NATSEMI ETHERNET DRIVER (DP8381x)
M: Tim Hockin <thockin@hockin.org>
S: Maintained
-F: drivers/net/natsemi.c
+F: drivers/net/ethernet/natsemi/natsemi.c
NATIVE INSTRUMENTS USB SOUND INTERFACE DRIVER
M: Daniel Mack <zonque@gmail.com>
M: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
L: netdev@vger.kernel.org
S: Maintained
-F: drivers/net/sonic.*
+F: drivers/net/ethernet/natsemi/sonic.*
SONICS SILICON BACKPLANE DRIVER (SSB)
M: Michael Buesch <m@bues.ch>
source "drivers/net/arm/Kconfig"
-config MACSONIC
- tristate "Macintosh SONIC based ethernet (onboard, NuBus, LC, CS)"
- depends on MAC
- ---help---
- Support for NatSemi SONIC based Ethernet devices. This includes
- the onboard Ethernet in many Quadras as well as some LC-PDS,
- a few Nubus and all known Comm Slot Ethernet cards. If you have
- one of these say Y and read the Ethernet-HOWTO, available from
- <http://www.tldp.org/docs.html#howto>.
-
- To compile this driver as a module, choose M here. This module will
- be called macsonic.
-
config KORINA
tristate "Korina (IDT RC32434) Ethernet support"
depends on NET_ETHERNET && MIKROTIK_RB532
If you have a Mikrotik RouterBoard 500 or IDT RC32434
based system say Y. Otherwise say N.
-config MIPS_JAZZ_SONIC
- tristate "MIPS JAZZ onboard SONIC Ethernet support"
- depends on MACH_JAZZ
- help
- This is the driver for the onboard card of MIPS Magnum 4000,
- Acer PICA, Olivetti M700-10 and a few other identical OEM systems.
-
-config XTENSA_XT2000_SONIC
- tristate "Xtensa XT2000 onboard SONIC Ethernet support"
- depends on XTENSA_PLATFORM_XT2000
- help
- This is the driver for the onboard card of the Xtensa XT2000 board.
-
config SGI_IOC3_ETH
bool "SGI IOC3 Ethernet"
depends on PCI && SGI_IP27
To compile this driver as a module, choose M here. The module
will be called seeq8005.
-config IBMLANA
- tristate "IBM LAN Adapter/A support"
- depends on MCA
- ---help---
- This is a Micro Channel Ethernet adapter. You need to set
- CONFIG_MCA to use this driver. It is both available as an in-kernel
- driver and as a module.
-
- To compile this driver as a module, choose M here. The only
- currently supported card is the IBM LAN Adapter/A for Ethernet. It
- will both support 16K and 32K memory windows, however a 32K window
- gives a better security against packet losses. Usage of multiple
- boards with this driver should be possible, but has not been tested
- up to now due to lack of hardware.
-
config NET_PCI
bool "EISA, VLB, PCI and on board controllers"
depends on ISA || EISA || PCI
Say Y here to support the Myson MTD-800 family of PCI-based Ethernet
cards. <http://www.myson.com.tw/>
-config NATSEMI
- tristate "National Semiconductor DP8381x series PCI Ethernet support"
- depends on NET_PCI && PCI
- select CRC32
- help
- This driver is for the National Semiconductor DP83810 series,
- which is used in cards from PureData, NetGear, Linksys
- and others, including the 83815 chip.
- More specific information and updates are available from
- <http://www.scyld.com/network/natsemi.html>.
-
config 8139CP
tristate "RealTek RTL-8139 C+ PCI Fast Ethernet Adapter support (EXPERIMENTAL)"
depends on NET_PCI && PCI && EXPERIMENTAL
source "drivers/net/ixp2000/Kconfig"
-config NS83820
- tristate "National Semiconductor DP83820 support"
- depends on PCI
- help
- This is a driver for the National Semiconductor DP83820 series
- of gigabit ethernet MACs. Cards using this chipset include
- the D-Link DGE-500T, PureData's PDP8023Z-TG, SMC's SMC9462TX,
- SOHO-GA2000T, SOHO-GA2500T. The driver supports the use of
- zero copy.
-
config HAMACHI
tristate "Packet Engines Hamachi GNIC-II support"
depends on PCI
obj-$(CONFIG_SIS900) += sis900.o
obj-$(CONFIG_R6040) += r6040.o
obj-$(CONFIG_YELLOWFIN) += yellowfin.o
-obj-$(CONFIG_NATSEMI) += natsemi.o
-obj-$(CONFIG_NS83820) += ns83820.o
obj-$(CONFIG_FEALNX) += fealnx.o
spidernet-y += spider_net.o spider_net_ethtool.o
obj-$(CONFIG_SPIDER_NET) += spidernet.o ethernet/sun/sungem_phy.o
obj-$(CONFIG_SGISEEQ) += sgiseeq.o
obj-$(CONFIG_SGI_O2MACE_ETH) += meth.o
obj-$(CONFIG_AT1700) += at1700.o
-obj-$(CONFIG_IBMLANA) += ibmlana.o
obj-$(CONFIG_8139CP) += 8139cp.o
obj-$(CONFIG_8139TOO) += 8139too.o
obj-$(CONFIG_CPMAC) += cpmac.o
obj-$(CONFIG_ETH16I) += eth16i.o
obj-$(CONFIG_EQUALIZER) += eql.o
obj-$(CONFIG_KORINA) += korina.o
-obj-$(CONFIG_MIPS_JAZZ_SONIC) += jazzsonic.o
obj-$(CONFIG_MIPS_SIM_NET) += mipsnet.o
obj-$(CONFIG_SGI_IOC3_ETH) += ioc3-eth.o
-obj-$(CONFIG_MACSONIC) += macsonic.o
obj-$(CONFIG_TUN) += tun.o
obj-$(CONFIG_VETH) += veth.o
obj-$(CONFIG_NET_NETX) += netx-eth.o
obj-$(CONFIG_GRETH) += greth.o
obj-$(CONFIG_LANTIQ_ETOP) += lantiq_etop.o
-obj-$(CONFIG_XTENSA_XT2000_SONIC) += xtsonic.o
-
obj-$(CONFIG_DNET) += dnet.o
obj-$(CONFIG_MACB) += macb.o
obj-$(CONFIG_S6GMAC) += s6gmac.o
config NET_VENDOR_8390
bool "National Semi-conductor 8390 devices"
- depends on AMIGA_PCMCIA || PCI || SUPERH || ISA || MCA || EISA || \
- MAC || M32R || MACH_TX49XX || MCA_LEGACY || H8300 || \
- ARM || MIPS || ZORRO || PCMCIA || EXPERIMENTAL
+ depends on NET_VENDOR_NATSEMI && (AMIGA_PCMCIA || PCI || SUPERH || \
+ ISA || MCA || EISA || MAC || M32R || MACH_TX49XX || \
+ MCA_LEGACY || H8300 || ARM || MIPS || ZORRO || PCMCIA || \
+ EXPERIMENTAL)
---help---
If you have a network (Ethernet) card belonging to this class, say Y
and read the Ethernet-HOWTO, available from
if ETHERNET
source "drivers/net/ethernet/3com/Kconfig"
-source "drivers/net/ethernet/8390/Kconfig"
source "drivers/net/ethernet/amd/Kconfig"
source "drivers/net/ethernet/apple/Kconfig"
source "drivers/net/ethernet/broadcom/Kconfig"
source "drivers/net/ethernet/i825xx/Kconfig"
source "drivers/net/ethernet/mellanox/Kconfig"
source "drivers/net/ethernet/myricom/Kconfig"
+source "drivers/net/ethernet/natsemi/Kconfig"
+source "drivers/net/ethernet/8390/Kconfig"
source "drivers/net/ethernet/pasemi/Kconfig"
source "drivers/net/ethernet/qlogic/Kconfig"
source "drivers/net/ethernet/racal/Kconfig"
obj-$(CONFIG_NET_VENDOR_I825XX) += i825xx/
obj-$(CONFIG_NET_VENDOR_MELLANOX) += mellanox/
obj-$(CONFIG_NET_VENDOR_MYRI) += myricom/
+obj-$(CONFIG_NET_VENDOR_NATSEMI) += natsemi/
obj-$(CONFIG_NET_VENDOR_PASEMI) += pasemi/
obj-$(CONFIG_NET_VENDOR_QLOGIC) += qlogic/
obj-$(CONFIG_NET_VENDOR_RACAL) += racal/
--- /dev/null
+#
+# National Semi-conductor device configuration
+#
+
+config NET_VENDOR_NATSEMI
+ bool "National Semi-conductor devices"
+ depends on MCA || MAC || MACH_JAZZ || PCI || XTENSA_PLATFORM_XT2000
+ ---help---
+ If you have a network (Ethernet) card belonging to this class, say Y
+ and read the Ethernet-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto>.
+
+ Note that the answer to this question doesn't directly affect the
+ kernel: saying N will just cause the configurator to skip all
+ the questions about National Semi-conductor devices. If you say Y,
+ you will be asked for your specific card in the following questions.
+
+if NET_VENDOR_NATSEMI
+
+config IBMLANA
+ tristate "IBM LAN Adapter/A support"
+ depends on MCA
+ ---help---
+ This is a Micro Channel Ethernet adapter. You need to set
+ CONFIG_MCA to use this driver. It is both available as an in-kernel
+ driver and as a module.
+
+ To compile this driver as a module, choose M here. The only
+ currently supported card is the IBM LAN Adapter/A for Ethernet. It
+ will both support 16K and 32K memory windows, however a 32K window
+ gives a better security against packet losses. Usage of multiple
+ boards with this driver should be possible, but has not been tested
+ up to now due to lack of hardware.
+
+config MACSONIC
+ tristate "Macintosh SONIC based ethernet (onboard, NuBus, LC, CS)"
+ depends on MAC
+ ---help---
+ Support for NatSemi SONIC based Ethernet devices. This includes
+ the onboard Ethernet in many Quadras as well as some LC-PDS,
+ a few Nubus and all known Comm Slot Ethernet cards. If you have
+ one of these say Y and read the Ethernet-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto>.
+
+ To compile this driver as a module, choose M here. This module will
+ be called macsonic.
+
+config MIPS_JAZZ_SONIC
+ tristate "MIPS JAZZ onboard SONIC Ethernet support"
+ depends on MACH_JAZZ
+ ---help---
+ This is the driver for the onboard card of MIPS Magnum 4000,
+ Acer PICA, Olivetti M700-10 and a few other identical OEM systems.
+
+config NATSEMI
+ tristate "National Semiconductor DP8381x series PCI Ethernet support"
+ depends on PCI
+ select CRC32
+ ---help---
+ This driver is for the National Semiconductor DP83810 series,
+ which is used in cards from PureData, NetGear, Linksys
+ and others, including the 83815 chip.
+ More specific information and updates are available from
+ <http://www.scyld.com/network/natsemi.html>.
+
+config NS83820
+ tristate "National Semiconductor DP83820 support"
+ depends on PCI
+ ---help---
+ This is a driver for the National Semiconductor DP83820 series
+ of gigabit ethernet MACs. Cards using this chipset include
+ the D-Link DGE-500T, PureData's PDP8023Z-TG, SMC's SMC9462TX,
+ SOHO-GA2000T, SOHO-GA2500T. The driver supports the use of
+ zero copy.
+
+config XTENSA_XT2000_SONIC
+ tristate "Xtensa XT2000 onboard SONIC Ethernet support"
+ depends on XTENSA_PLATFORM_XT2000
+ ---help---
+ This is the driver for the onboard card of the Xtensa XT2000 board.
+
+endif # NET_VENDOR_NATSEMI
--- /dev/null
+#
+# Makefile for the National Semi-conductor Sonic devices.
+#
+
+obj-$(CONFIG_IBMLANA) += ibmlana.o
+obj-$(CONFIG_MACSONIC) += macsonic.o
+obj-$(CONFIG_MIPS_JAZZ_SONIC) += jazzsonic.o
+obj-$(CONFIG_NATSEMI) += natsemi.o
+obj-$(CONFIG_NS83820) += ns83820.o
+obj-$(CONFIG_XTENSA_XT2000_SONIC) += xtsonic.o
--- /dev/null
+/*
+net-3-driver for the IBM LAN Adapter/A
+
+This is an extension to the Linux operating system, and is covered by the
+same GNU General Public License that covers that work.
+
+Copyright 1999 by Alfred Arnold (alfred@ccac.rwth-aachen.de,
+ alfred.arnold@lancom.de)
+
+This driver is based both on the SK_MCA driver, which is itself based on the
+SK_G16 and 3C523 driver.
+
+paper sources:
+ 'PC Hardware: Aufbau, Funktionsweise, Programmierung' by
+ Hans-Peter Messmer for the basic Microchannel stuff
+
+ 'Linux Geraetetreiber' by Allesandro Rubini, Kalle Dalheimer
+ for help on Ethernet driver programming
+
+ 'DP83934CVUL-20/25 MHz SONIC-T Ethernet Controller Datasheet' by National
+ Semiconductor for info on the MAC chip
+
+ 'LAN Technical Reference Ethernet Adapter Interface Version 1 Release 1.0
+ Document Number SC30-3661-00' by IBM for info on the adapter itself
+
+ Also see http://www.national.com/analog
+
+special acknowledgements to:
+ - Bob Eager for helping me out with documentation from IBM
+ - Jim Shorney for his endless patience with me while I was using
+ him as a beta tester to trace down the address filter bug ;-)
+
+ Missing things:
+
+ -> set debug level via ioctl instead of compile-time switches
+ -> I didn't follow the development of the 2.1.x kernels, so my
+ assumptions about which things changed with which kernel version
+ are probably nonsense
+
+History:
+ Nov 6th, 1999
+ startup from SK_MCA driver
+ Dec 6th, 1999
+ finally got docs about the card. A big thank you to Bob Eager!
+ Dec 12th, 1999
+ first packet received
+ Dec 13th, 1999
+ recv queue done, tcpdump works
+ Dec 15th, 1999
+ transmission part works
+ Dec 28th, 1999
+ added usage of the isa_functions for Linux 2.3 . Things should
+ still work with 2.0.x....
+ Jan 28th, 2000
+ in Linux 2.2.13, the version.h file mysteriously didn't get
+ included. Added a workaround for this. Furthermore, it now
+ not only compiles as a modules ;-)
+ Jan 30th, 2000
+ newer kernels automatically probe more than one board, so the
+ 'startslot' as a variable is also needed here
+ Apr 12th, 2000
+ the interrupt mask register is not set 'hard' instead of individually
+ setting registers, since this seems to set bits that shouldn't be
+ set
+ May 21st, 2000
+ reset interrupt status immediately after CAM load
+ add a recovery delay after releasing the chip's reset line
+ May 24th, 2000
+ finally found the bug in the address filter setup - damned signed
+ chars!
+ June 1st, 2000
+ corrected version codes, added support for the latest 2.3 changes
+ Oct 28th, 2002
+ cleaned up for the 2.5 tree <alan@lxorguk.ukuu.org.uk>
+
+ *************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/time.h>
+#include <linux/mca.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/bitops.h>
+
+#include <asm/processor.h>
+#include <asm/io.h>
+
+#define _IBM_LANA_DRIVER_
+#include "ibmlana.h"
+
+#undef DEBUG
+
+#define DRV_NAME "ibmlana"
+
+/* ------------------------------------------------------------------------
+ * global static data - not more since we can handle multiple boards and
+ * have to pack all state info into the device struct!
+ * ------------------------------------------------------------------------ */
+
+static char *MediaNames[Media_Count] = {
+ "10BaseT", "10Base5", "Unknown", "10Base2"
+};
+
+/* ------------------------------------------------------------------------
+ * private subfunctions
+ * ------------------------------------------------------------------------ */
+
+#ifdef DEBUG
+ /* dump all registers */
+
+static void dumpregs(struct net_device *dev)
+{
+ int z;
+
+ for (z = 0; z < 160; z += 2) {
+ if (!(z & 15))
+ printk("REGS: %04x:", z);
+ printk(" %04x", inw(dev->base_addr + z));
+ if ((z & 15) == 14)
+ printk("\n");
+ }
+}
+
+/* dump parts of shared memory - only needed during debugging */
+
+static void dumpmem(struct net_device *dev, u32 start, u32 len)
+{
+ ibmlana_priv *priv = netdev_priv(dev);
+ int z;
+
+ printk("Address %04x:\n", start);
+ for (z = 0; z < len; z++) {
+ if ((z & 15) == 0)
+ printk("%04x:", z);
+ printk(" %02x", readb(priv->base + start + z));
+ if ((z & 15) == 15)
+ printk("\n");
+ }
+ if ((z & 15) != 0)
+ printk("\n");
+}
+
+/* print exact time - ditto */
+
+static void PrTime(void)
+{
+ struct timeval tv;
+
+ do_gettimeofday(&tv);
+ printk("%9d:%06d: ", (int) tv.tv_sec, (int) tv.tv_usec);
+}
+#endif /* DEBUG */
+
+/* deduce resources out of POS registers */
+
+static void getaddrs(struct mca_device *mdev, int *base, int *memlen,
+ int *iobase, int *irq, ibmlana_medium *medium)
+{
+ u_char pos0, pos1;
+
+ pos0 = mca_device_read_stored_pos(mdev, 2);
+ pos1 = mca_device_read_stored_pos(mdev, 3);
+
+ *base = 0xc0000 + ((pos1 & 0xf0) << 9);
+ *memlen = (pos1 & 0x01) ? 0x8000 : 0x4000;
+ *iobase = (pos0 & 0xe0) << 7;
+ switch (pos0 & 0x06) {
+ case 0:
+ *irq = 5;
+ break;
+ case 2:
+ *irq = 15;
+ break;
+ case 4:
+ *irq = 10;
+ break;
+ case 6:
+ *irq = 11;
+ break;
+ }
+ *medium = (pos0 & 0x18) >> 3;
+}
+
+/* wait on register value with mask and timeout */
+
+static int wait_timeout(struct net_device *dev, int regoffs, u16 mask,
+ u16 value, int timeout)
+{
+ unsigned long fin = jiffies + timeout;
+
+ while (time_before(jiffies,fin))
+ if ((inw(dev->base_addr + regoffs) & mask) == value)
+ return 1;
+
+ return 0;
+}
+
+
+/* reset the whole board */
+
+static void ResetBoard(struct net_device *dev)
+{
+ unsigned char bcmval;
+
+ /* read original board control value */
+
+ bcmval = inb(dev->base_addr + BCMREG);
+
+ /* set reset bit for a while */
+
+ bcmval |= BCMREG_RESET;
+ outb(bcmval, dev->base_addr + BCMREG);
+ udelay(10);
+ bcmval &= ~BCMREG_RESET;
+ outb(bcmval, dev->base_addr + BCMREG);
+
+ /* switch over to RAM again */
+
+ bcmval |= BCMREG_RAMEN | BCMREG_RAMWIN;
+ outb(bcmval, dev->base_addr + BCMREG);
+}
+
+/* calculate RAM layout & set up descriptors in RAM */
+
+static void InitDscrs(struct net_device *dev)
+{
+ ibmlana_priv *priv = netdev_priv(dev);
+ u32 addr, baddr, raddr;
+ int z;
+ tda_t tda;
+ rda_t rda;
+ rra_t rra;
+
+ /* initialize RAM */
+
+ memset_io(priv->base, 0xaa,
+ dev->mem_start - dev->mem_start); /* XXX: typo? */
+
+ /* setup n TX descriptors - independent of RAM size */
+
+ priv->tdastart = addr = 0;
+ priv->txbufstart = baddr = sizeof(tda_t) * TXBUFCNT;
+ for (z = 0; z < TXBUFCNT; z++) {
+ tda.status = 0;
+ tda.config = 0;
+ tda.length = 0;
+ tda.fragcount = 1;
+ tda.startlo = baddr;
+ tda.starthi = 0;
+ tda.fraglength = 0;
+ if (z == TXBUFCNT - 1)
+ tda.link = priv->tdastart;
+ else
+ tda.link = addr + sizeof(tda_t);
+ tda.link |= 1;
+ memcpy_toio(priv->base + addr, &tda, sizeof(tda_t));
+ addr += sizeof(tda_t);
+ baddr += PKTSIZE;
+ }
+
+ /* calculate how many receive buffers fit into remaining memory */
+
+ priv->rxbufcnt = (dev->mem_end - dev->mem_start - baddr) / (sizeof(rra_t) + sizeof(rda_t) + PKTSIZE);
+
+ /* calculate receive addresses */
+
+ priv->rrastart = raddr = priv->txbufstart + (TXBUFCNT * PKTSIZE);
+ priv->rdastart = addr = priv->rrastart + (priv->rxbufcnt * sizeof(rra_t));
+ priv->rxbufstart = baddr = priv->rdastart + (priv->rxbufcnt * sizeof(rda_t));
+
+ for (z = 0; z < priv->rxbufcnt; z++) {
+ rra.startlo = baddr;
+ rra.starthi = 0;
+ rra.cntlo = PKTSIZE >> 1;
+ rra.cnthi = 0;
+ memcpy_toio(priv->base + raddr, &rra, sizeof(rra_t));
+
+ rda.status = 0;
+ rda.length = 0;
+ rda.startlo = 0;
+ rda.starthi = 0;
+ rda.seqno = 0;
+ if (z < priv->rxbufcnt - 1)
+ rda.link = addr + sizeof(rda_t);
+ else
+ rda.link = 1;
+ rda.inuse = 1;
+ memcpy_toio(priv->base + addr, &rda, sizeof(rda_t));
+
+ baddr += PKTSIZE;
+ raddr += sizeof(rra_t);
+ addr += sizeof(rda_t);
+ }
+
+ /* initialize current pointers */
+
+ priv->nextrxdescr = 0;
+ priv->lastrxdescr = priv->rxbufcnt - 1;
+ priv->nexttxdescr = 0;
+ priv->currtxdescr = 0;
+ priv->txusedcnt = 0;
+ memset(priv->txused, 0, sizeof(priv->txused));
+}
+
+/* set up Rx + Tx descriptors in SONIC */
+
+static int InitSONIC(struct net_device *dev)
+{
+ ibmlana_priv *priv = netdev_priv(dev);
+
+ /* set up start & end of resource area */
+
+ outw(0, SONIC_URRA);
+ outw(priv->rrastart, dev->base_addr + SONIC_RSA);
+ outw(priv->rrastart + (priv->rxbufcnt * sizeof(rra_t)), dev->base_addr + SONIC_REA);
+ outw(priv->rrastart, dev->base_addr + SONIC_RRP);
+ outw(priv->rrastart, dev->base_addr + SONIC_RWP);
+
+ /* set EOBC so that only one packet goes into one buffer */
+
+ outw((PKTSIZE - 4) >> 1, dev->base_addr + SONIC_EOBC);
+
+ /* let SONIC read the first RRA descriptor */
+
+ outw(CMDREG_RRRA, dev->base_addr + SONIC_CMDREG);
+ if (!wait_timeout(dev, SONIC_CMDREG, CMDREG_RRRA, 0, 2)) {
+ printk(KERN_ERR "%s: SONIC did not respond on RRRA command - giving up.", dev->name);
+ return 0;
+ }
+
+ /* point SONIC to the first RDA */
+
+ outw(0, dev->base_addr + SONIC_URDA);
+ outw(priv->rdastart, dev->base_addr + SONIC_CRDA);
+
+ /* set upper half of TDA address */
+
+ outw(0, dev->base_addr + SONIC_UTDA);
+
+ return 1;
+}
+
+/* stop SONIC so we can reinitialize it */
+
+static void StopSONIC(struct net_device *dev)
+{
+ /* disable interrupts */
+
+ outb(inb(dev->base_addr + BCMREG) & (~BCMREG_IEN), dev->base_addr + BCMREG);
+ outb(0, dev->base_addr + SONIC_IMREG);
+
+ /* reset the SONIC */
+
+ outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
+ udelay(10);
+ outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
+}
+
+/* initialize card and SONIC for proper operation */
+
+static void putcam(camentry_t * cams, int *camcnt, char *addr)
+{
+ camentry_t *pcam = cams + (*camcnt);
+ u8 *uaddr = (u8 *) addr;
+
+ pcam->index = *camcnt;
+ pcam->addr0 = (((u16) uaddr[1]) << 8) | uaddr[0];
+ pcam->addr1 = (((u16) uaddr[3]) << 8) | uaddr[2];
+ pcam->addr2 = (((u16) uaddr[5]) << 8) | uaddr[4];
+ (*camcnt)++;
+}
+
+static void InitBoard(struct net_device *dev)
+{
+ ibmlana_priv *priv = netdev_priv(dev);
+ int camcnt;
+ camentry_t cams[16];
+ u32 cammask;
+ struct netdev_hw_addr *ha;
+ u16 rcrval;
+
+ /* reset the SONIC */
+
+ outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
+ udelay(10);
+
+ /* clear all spurious interrupts */
+
+ outw(inw(dev->base_addr + SONIC_ISREG), dev->base_addr + SONIC_ISREG);
+
+ /* set up the SONIC's bus interface - constant for this adapter -
+ must be done while the SONIC is in reset */
+
+ outw(DCREG_USR1 | DCREG_USR0 | DCREG_WC1 | DCREG_DW32, dev->base_addr + SONIC_DCREG);
+ outw(0, dev->base_addr + SONIC_DCREG2);
+
+ /* remove reset form the SONIC */
+
+ outw(0, dev->base_addr + SONIC_CMDREG);
+ udelay(10);
+
+ /* data sheet requires URRA to be programmed before setting up the CAM contents */
+
+ outw(0, dev->base_addr + SONIC_URRA);
+
+ /* program the CAM entry 0 to the device address */
+
+ camcnt = 0;
+ putcam(cams, &camcnt, dev->dev_addr);
+
+ /* start putting the multicast addresses into the CAM list. Stop if
+ it is full. */
+
+ netdev_for_each_mc_addr(ha, dev) {
+ putcam(cams, &camcnt, ha->addr);
+ if (camcnt == 16)
+ break;
+ }
+
+ /* calculate CAM mask */
+
+ cammask = (1 << camcnt) - 1;
+
+ /* feed CDA into SONIC, initialize RCR value (always get broadcasts) */
+
+ memcpy_toio(priv->base, cams, sizeof(camentry_t) * camcnt);
+ memcpy_toio(priv->base + (sizeof(camentry_t) * camcnt), &cammask, sizeof(cammask));
+
+#ifdef DEBUG
+ printk("CAM setup:\n");
+ dumpmem(dev, 0, sizeof(camentry_t) * camcnt + sizeof(cammask));
+#endif
+
+ outw(0, dev->base_addr + SONIC_CAMPTR);
+ outw(camcnt, dev->base_addr + SONIC_CAMCNT);
+ outw(CMDREG_LCAM, dev->base_addr + SONIC_CMDREG);
+ if (!wait_timeout(dev, SONIC_CMDREG, CMDREG_LCAM, 0, 2)) {
+ printk(KERN_ERR "%s:SONIC did not respond on LCAM command - giving up.", dev->name);
+ return;
+ } else {
+ /* clear interrupt condition */
+
+ outw(ISREG_LCD, dev->base_addr + SONIC_ISREG);
+
+#ifdef DEBUG
+ printk("Loading CAM done, address pointers %04x:%04x\n",
+ inw(dev->base_addr + SONIC_URRA),
+ inw(dev->base_addr + SONIC_CAMPTR));
+ {
+ int z;
+
+ printk("\n-->CAM: PTR %04x CNT %04x\n",
+ inw(dev->base_addr + SONIC_CAMPTR),
+ inw(dev->base_addr + SONIC_CAMCNT));
+ outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
+ for (z = 0; z < camcnt; z++) {
+ outw(z, dev->base_addr + SONIC_CAMEPTR);
+ printk("Entry %d: %04x %04x %04x\n", z,
+ inw(dev->base_addr + SONIC_CAMADDR0),
+ inw(dev->base_addr + SONIC_CAMADDR1),
+ inw(dev->base_addr + SONIC_CAMADDR2));
+ }
+ outw(0, dev->base_addr + SONIC_CMDREG);
+ }
+#endif
+ }
+
+ rcrval = RCREG_BRD | RCREG_LB_NONE;
+
+ /* if still multicast addresses left or ALLMULTI is set, set the multicast
+ enable bit */
+
+ if ((dev->flags & IFF_ALLMULTI) || netdev_mc_count(dev) > camcnt)
+ rcrval |= RCREG_AMC;
+
+ /* promiscuous mode ? */
+
+ if (dev->flags & IFF_PROMISC)
+ rcrval |= RCREG_PRO;
+
+ /* program receive mode */
+
+ outw(rcrval, dev->base_addr + SONIC_RCREG);
+#ifdef DEBUG
+ printk("\nRCRVAL: %04x\n", rcrval);
+#endif
+
+ /* set up descriptors in shared memory + feed them into SONIC registers */
+
+ InitDscrs(dev);
+ if (!InitSONIC(dev))
+ return;
+
+ /* reset all pending interrupts */
+
+ outw(0xffff, dev->base_addr + SONIC_ISREG);
+
+ /* enable transmitter + receiver interrupts */
+
+ outw(CMDREG_RXEN, dev->base_addr + SONIC_CMDREG);
+ outw(IMREG_PRXEN | IMREG_RBEEN | IMREG_PTXEN | IMREG_TXEREN, dev->base_addr + SONIC_IMREG);
+
+ /* turn on card interrupts */
+
+ outb(inb(dev->base_addr + BCMREG) | BCMREG_IEN, dev->base_addr + BCMREG);
+
+#ifdef DEBUG
+ printk("Register dump after initialization:\n");
+ dumpregs(dev);
+#endif
+}
+
+/* start transmission of a descriptor */
+
+static void StartTx(struct net_device *dev, int descr)
+{
+ ibmlana_priv *priv = netdev_priv(dev);
+ int addr;
+
+ addr = priv->tdastart + (descr * sizeof(tda_t));
+
+ /* put descriptor address into SONIC */
+
+ outw(addr, dev->base_addr + SONIC_CTDA);
+
+ /* trigger transmitter */
+
+ priv->currtxdescr = descr;
+ outw(CMDREG_TXP, dev->base_addr + SONIC_CMDREG);
+}
+
+/* ------------------------------------------------------------------------
+ * interrupt handler(s)
+ * ------------------------------------------------------------------------ */
+
+/* receive buffer area exhausted */
+
+static void irqrbe_handler(struct net_device *dev)
+{
+ ibmlana_priv *priv = netdev_priv(dev);
+
+ /* point the SONIC back to the RRA start */
+
+ outw(priv->rrastart, dev->base_addr + SONIC_RRP);
+ outw(priv->rrastart, dev->base_addr + SONIC_RWP);
+}
+
+/* receive interrupt */
+
+static void irqrx_handler(struct net_device *dev)
+{
+ ibmlana_priv *priv = netdev_priv(dev);
+ rda_t rda;
+ u32 rdaaddr, lrdaaddr;
+
+ /* loop until ... */
+
+ while (1) {
+ /* read descriptor that was next to be filled by SONIC */
+
+ rdaaddr = priv->rdastart + (priv->nextrxdescr * sizeof(rda_t));
+ lrdaaddr = priv->rdastart + (priv->lastrxdescr * sizeof(rda_t));
+ memcpy_fromio(&rda, priv->base + rdaaddr, sizeof(rda_t));
+
+ /* iron out upper word halves of fields we use - SONIC will duplicate
+ bits 0..15 to 16..31 */
+
+ rda.status &= 0xffff;
+ rda.length &= 0xffff;
+ rda.startlo &= 0xffff;
+
+ /* stop if the SONIC still owns it, i.e. there is no data for us */
+
+ if (rda.inuse)
+ break;
+
+ /* good packet? */
+
+ else if (rda.status & RCREG_PRX) {
+ struct sk_buff *skb;
+
+ /* fetch buffer */
+
+ skb = dev_alloc_skb(rda.length + 2);
+ if (skb == NULL)
+ dev->stats.rx_dropped++;
+ else {
+ /* copy out data */
+
+ memcpy_fromio(skb_put(skb, rda.length),
+ priv->base +
+ rda.startlo, rda.length);
+
+ /* set up skb fields */
+
+ skb->protocol = eth_type_trans(skb, dev);
+ skb_checksum_none_assert(skb);
+
+ /* bookkeeping */
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += rda.length;
+
+ /* pass to the upper layers */
+ netif_rx(skb);
+ }
+ }
+
+ /* otherwise check error status bits and increase statistics */
+
+ else {
+ dev->stats.rx_errors++;
+ if (rda.status & RCREG_FAER)
+ dev->stats.rx_frame_errors++;
+ if (rda.status & RCREG_CRCR)
+ dev->stats.rx_crc_errors++;
+ }
+
+ /* descriptor processed, will become new last descriptor in queue */
+
+ rda.link = 1;
+ rda.inuse = 1;
+ memcpy_toio(priv->base + rdaaddr, &rda,
+ sizeof(rda_t));
+
+ /* set up link and EOL = 0 in currently last descriptor. Only write
+ the link field since the SONIC may currently already access the
+ other fields. */
+
+ memcpy_toio(priv->base + lrdaaddr + 20, &rdaaddr, 4);
+
+ /* advance indices */
+
+ priv->lastrxdescr = priv->nextrxdescr;
+ if ((++priv->nextrxdescr) >= priv->rxbufcnt)
+ priv->nextrxdescr = 0;
+ }
+}
+
+/* transmit interrupt */
+
+static void irqtx_handler(struct net_device *dev)
+{
+ ibmlana_priv *priv = netdev_priv(dev);
+ tda_t tda;
+
+ /* fetch descriptor (we forgot the size ;-) */
+ memcpy_fromio(&tda, priv->base + priv->tdastart + (priv->currtxdescr * sizeof(tda_t)), sizeof(tda_t));
+
+ /* update statistics */
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += tda.length;
+
+ /* update our pointers */
+ priv->txused[priv->currtxdescr] = 0;
+ priv->txusedcnt--;
+
+ /* if there are more descriptors present in RAM, start them */
+ if (priv->txusedcnt > 0)
+ StartTx(dev, (priv->currtxdescr + 1) % TXBUFCNT);
+
+ /* tell the upper layer we can go on transmitting */
+ netif_wake_queue(dev);
+}
+
+static void irqtxerr_handler(struct net_device *dev)
+{
+ ibmlana_priv *priv = netdev_priv(dev);
+ tda_t tda;
+
+ /* fetch descriptor to check status */
+ memcpy_fromio(&tda, priv->base + priv->tdastart + (priv->currtxdescr * sizeof(tda_t)), sizeof(tda_t));
+
+ /* update statistics */
+ dev->stats.tx_errors++;
+ if (tda.status & (TCREG_NCRS | TCREG_CRSL))
+ dev->stats.tx_carrier_errors++;
+ if (tda.status & TCREG_EXC)
+ dev->stats.tx_aborted_errors++;
+ if (tda.status & TCREG_OWC)
+ dev->stats.tx_window_errors++;
+ if (tda.status & TCREG_FU)
+ dev->stats.tx_fifo_errors++;
+
+ /* update our pointers */
+ priv->txused[priv->currtxdescr] = 0;
+ priv->txusedcnt--;
+
+ /* if there are more descriptors present in RAM, start them */
+ if (priv->txusedcnt > 0)
+ StartTx(dev, (priv->currtxdescr + 1) % TXBUFCNT);
+
+ /* tell the upper layer we can go on transmitting */
+ netif_wake_queue(dev);
+}
+
+/* general interrupt entry */
+
+static irqreturn_t irq_handler(int dummy, void *device)
+{
+ struct net_device *dev = device;
+ u16 ival;
+
+ /* in case we're not meant... */
+ if (!(inb(dev->base_addr + BCMREG) & BCMREG_IPEND))
+ return IRQ_NONE;
+
+ /* loop through the interrupt bits until everything is clear */
+ while (1) {
+ ival = inw(dev->base_addr + SONIC_ISREG);
+
+ if (ival & ISREG_RBE) {
+ irqrbe_handler(dev);
+ outw(ISREG_RBE, dev->base_addr + SONIC_ISREG);
+ }
+ if (ival & ISREG_PKTRX) {
+ irqrx_handler(dev);
+ outw(ISREG_PKTRX, dev->base_addr + SONIC_ISREG);
+ }
+ if (ival & ISREG_TXDN) {
+ irqtx_handler(dev);
+ outw(ISREG_TXDN, dev->base_addr + SONIC_ISREG);
+ }
+ if (ival & ISREG_TXER) {
+ irqtxerr_handler(dev);
+ outw(ISREG_TXER, dev->base_addr + SONIC_ISREG);
+ }
+ break;
+ }
+ return IRQ_HANDLED;
+}
+
+/* ------------------------------------------------------------------------
+ * driver methods
+ * ------------------------------------------------------------------------ */
+
+/* MCA info */
+
+#if 0 /* info available elsewhere, but this is kept for reference */
+static int ibmlana_getinfo(char *buf, int slot, void *d)
+{
+ int len = 0, i;
+ struct net_device *dev = (struct net_device *) d;
+ ibmlana_priv *priv;
+
+ /* can't say anything about an uninitialized device... */
+
+ if (dev == NULL)
+ return len;
+ priv = netdev_priv(dev);
+
+ /* print info */
+
+ len += sprintf(buf + len, "IRQ: %d\n", priv->realirq);
+ len += sprintf(buf + len, "I/O: %#lx\n", dev->base_addr);
+ len += sprintf(buf + len, "Memory: %#lx-%#lx\n", dev->mem_start, dev->mem_end - 1);
+ len += sprintf(buf + len, "Transceiver: %s\n", MediaNames[priv->medium]);
+ len += sprintf(buf + len, "Device: %s\n", dev->name);
+ len += sprintf(buf + len, "MAC address:");
+ for (i = 0; i < 6; i++)
+ len += sprintf(buf + len, " %02x", dev->dev_addr[i]);
+ buf[len++] = '\n';
+ buf[len] = 0;
+
+ return len;
+}
+#endif
+
+/* open driver. Means also initialization and start of LANCE */
+
+static int ibmlana_open(struct net_device *dev)
+{
+ int result;
+ ibmlana_priv *priv = netdev_priv(dev);
+
+ /* register resources - only necessary for IRQ */
+
+ result = request_irq(priv->realirq, irq_handler, IRQF_SHARED,
+ dev->name, dev);
+ if (result != 0) {
+ printk(KERN_ERR "%s: failed to register irq %d\n", dev->name, dev->irq);
+ return result;
+ }
+ dev->irq = priv->realirq;
+
+ /* set up the card and SONIC */
+ InitBoard(dev);
+
+ /* initialize operational flags */
+ netif_start_queue(dev);
+ return 0;
+}
+
+/* close driver. Shut down board and free allocated resources */
+
+static int ibmlana_close(struct net_device *dev)
+{
+ /* turn off board */
+
+ /* release resources */
+ if (dev->irq != 0)
+ free_irq(dev->irq, dev);
+ dev->irq = 0;
+ return 0;
+}
+
+/* transmit a block. */
+
+static netdev_tx_t ibmlana_tx(struct sk_buff *skb, struct net_device *dev)
+{
+ ibmlana_priv *priv = netdev_priv(dev);
+ int tmplen, addr;
+ unsigned long flags;
+ tda_t tda;
+ int baddr;
+
+ /* find out if there are free slots for a frame to transmit. If not,
+ the upper layer is in deep desperation and we simply ignore the frame. */
+
+ if (priv->txusedcnt >= TXBUFCNT) {
+ dev->stats.tx_dropped++;
+ goto tx_done;
+ }
+
+ /* copy the frame data into the next free transmit buffer - fillup missing */
+ tmplen = skb->len;
+ if (tmplen < 60)
+ tmplen = 60;
+ baddr = priv->txbufstart + (priv->nexttxdescr * PKTSIZE);
+ memcpy_toio(priv->base + baddr, skb->data, skb->len);
+
+ /* copy filler into RAM - in case we're filling up...
+ we're filling a bit more than necessary, but that doesn't harm
+ since the buffer is far larger...
+ Sorry Linus for the filler string but I couldn't resist ;-) */
+
+ if (tmplen > skb->len) {
+ char *fill = "NetBSD is a nice OS too! ";
+ unsigned int destoffs = skb->len, l = strlen(fill);
+
+ while (destoffs < tmplen) {
+ memcpy_toio(priv->base + baddr + destoffs, fill, l);
+ destoffs += l;
+ }
+ }
+
+ /* set up the new frame descriptor */
+ addr = priv->tdastart + (priv->nexttxdescr * sizeof(tda_t));
+ memcpy_fromio(&tda, priv->base + addr, sizeof(tda_t));
+ tda.length = tda.fraglength = tmplen;
+ memcpy_toio(priv->base + addr, &tda, sizeof(tda_t));
+
+ /* if there were no active descriptors, trigger the SONIC */
+ spin_lock_irqsave(&priv->lock, flags);
+
+ priv->txusedcnt++;
+ priv->txused[priv->nexttxdescr] = 1;
+
+ /* are all transmission slots used up ? */
+ if (priv->txusedcnt >= TXBUFCNT)
+ netif_stop_queue(dev);
+
+ if (priv->txusedcnt == 1)
+ StartTx(dev, priv->nexttxdescr);
+ priv->nexttxdescr = (priv->nexttxdescr + 1) % TXBUFCNT;
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+tx_done:
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+}
+
+/* switch receiver mode. */
+
+static void ibmlana_set_multicast_list(struct net_device *dev)
+{
+ /* first stop the SONIC... */
+ StopSONIC(dev);
+ /* ...then reinit it with the new flags */
+ InitBoard(dev);
+}
+
+/* ------------------------------------------------------------------------
+ * hardware check
+ * ------------------------------------------------------------------------ */
+
+static int ibmlana_irq;
+static int ibmlana_io;
+static int startslot; /* counts through slots when probing multiple devices */
+
+static short ibmlana_adapter_ids[] __initdata = {
+ IBM_LANA_ID,
+ 0x0000
+};
+
+static char *ibmlana_adapter_names[] __devinitdata = {
+ "IBM LAN Adapter/A",
+ NULL
+};
+
+
+static const struct net_device_ops ibmlana_netdev_ops = {
+ .ndo_open = ibmlana_open,
+ .ndo_stop = ibmlana_close,
+ .ndo_start_xmit = ibmlana_tx,
+ .ndo_set_multicast_list = ibmlana_set_multicast_list,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+static int __devinit ibmlana_init_one(struct device *kdev)
+{
+ struct mca_device *mdev = to_mca_device(kdev);
+ struct net_device *dev;
+ int slot = mdev->slot, z, rc;
+ int base = 0, irq = 0, iobase = 0, memlen = 0;
+ ibmlana_priv *priv;
+ ibmlana_medium medium;
+
+ dev = alloc_etherdev(sizeof(ibmlana_priv));
+ if (!dev)
+ return -ENOMEM;
+
+ dev->irq = ibmlana_irq;
+ dev->base_addr = ibmlana_io;
+
+ base = dev->mem_start;
+ irq = dev->irq;
+
+ /* deduce card addresses */
+ getaddrs(mdev, &base, &memlen, &iobase, &irq, &medium);
+
+ /* were we looking for something different ? */
+ if (dev->irq && dev->irq != irq) {
+ rc = -ENODEV;
+ goto err_out;
+ }
+ if (dev->mem_start && dev->mem_start != base) {
+ rc = -ENODEV;
+ goto err_out;
+ }
+
+ /* announce success */
+ printk(KERN_INFO "%s: IBM LAN Adapter/A found in slot %d\n", dev->name, slot + 1);
+
+ /* try to obtain I/O range */
+ if (!request_region(iobase, IBM_LANA_IORANGE, DRV_NAME)) {
+ printk(KERN_ERR "%s: cannot allocate I/O range at %#x!\n", DRV_NAME, iobase);
+ startslot = slot + 1;
+ rc = -EBUSY;
+ goto err_out;
+ }
+
+ priv = netdev_priv(dev);
+ priv->slot = slot;
+ priv->realirq = mca_device_transform_irq(mdev, irq);
+ priv->medium = medium;
+ spin_lock_init(&priv->lock);
+
+ /* set base + irq for this device (irq not allocated so far) */
+
+ dev->irq = 0;
+ dev->mem_start = base;
+ dev->mem_end = base + memlen;
+ dev->base_addr = iobase;
+
+ priv->base = ioremap(base, memlen);
+ if (!priv->base) {
+ printk(KERN_ERR "%s: cannot remap memory!\n", DRV_NAME);
+ startslot = slot + 1;
+ rc = -EBUSY;
+ goto err_out_reg;
+ }
+
+ mca_device_set_name(mdev, ibmlana_adapter_names[mdev->index]);
+ mca_device_set_claim(mdev, 1);
+
+ /* set methods */
+ dev->netdev_ops = &ibmlana_netdev_ops;
+ dev->flags |= IFF_MULTICAST;
+
+ /* copy out MAC address */
+
+ for (z = 0; z < ETH_ALEN; z++)
+ dev->dev_addr[z] = inb(dev->base_addr + MACADDRPROM + z);
+
+ /* print config */
+
+ printk(KERN_INFO "%s: IRQ %d, I/O %#lx, memory %#lx-%#lx, "
+ "MAC address %pM.\n",
+ dev->name, priv->realirq, dev->base_addr,
+ dev->mem_start, dev->mem_end - 1,
+ dev->dev_addr);
+ printk(KERN_INFO "%s: %s medium\n", dev->name, MediaNames[priv->medium]);
+
+ /* reset board */
+
+ ResetBoard(dev);
+
+ /* next probe will start at next slot */
+
+ startslot = slot + 1;
+
+ rc = register_netdev(dev);
+ if (rc)
+ goto err_out_claimed;
+
+ dev_set_drvdata(kdev, dev);
+ return 0;
+
+err_out_claimed:
+ mca_device_set_claim(mdev, 0);
+ iounmap(priv->base);
+err_out_reg:
+ release_region(iobase, IBM_LANA_IORANGE);
+err_out:
+ free_netdev(dev);
+ return rc;
+}
+
+static int ibmlana_remove_one(struct device *kdev)
+{
+ struct mca_device *mdev = to_mca_device(kdev);
+ struct net_device *dev = dev_get_drvdata(kdev);
+ ibmlana_priv *priv = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ /*DeinitBoard(dev); */
+ release_region(dev->base_addr, IBM_LANA_IORANGE);
+ mca_device_set_claim(mdev, 0);
+ iounmap(priv->base);
+ free_netdev(dev);
+ return 0;
+}
+
+/* ------------------------------------------------------------------------
+ * modularization support
+ * ------------------------------------------------------------------------ */
+
+module_param_named(irq, ibmlana_irq, int, 0);
+module_param_named(io, ibmlana_io, int, 0);
+MODULE_PARM_DESC(irq, "IBM LAN/A IRQ number");
+MODULE_PARM_DESC(io, "IBM LAN/A I/O base address");
+MODULE_LICENSE("GPL");
+
+static struct mca_driver ibmlana_driver = {
+ .id_table = ibmlana_adapter_ids,
+ .driver = {
+ .name = "ibmlana",
+ .bus = &mca_bus_type,
+ .probe = ibmlana_init_one,
+ .remove = ibmlana_remove_one,
+ },
+};
+
+static int __init ibmlana_init_module(void)
+{
+ return mca_register_driver(&ibmlana_driver);
+}
+
+static void __exit ibmlana_cleanup_module(void)
+{
+ mca_unregister_driver(&ibmlana_driver);
+}
+
+module_init(ibmlana_init_module);
+module_exit(ibmlana_cleanup_module);
--- /dev/null
+#ifndef _IBM_LANA_INCLUDE_
+#define _IBM_LANA_INCLUDE_
+
+#ifdef _IBM_LANA_DRIVER_
+
+/* maximum packet size */
+
+#define PKTSIZE 1524
+
+/* number of transmit buffers */
+
+#define TXBUFCNT 4
+
+/* Adapter ID's */
+#define IBM_LANA_ID 0xffe0
+
+/* media enumeration - defined in a way that it fits onto the LAN/A's
+ POS registers... */
+
+typedef enum {
+ Media_10BaseT, Media_10Base5,
+ Media_Unknown, Media_10Base2, Media_Count
+} ibmlana_medium;
+
+/* private structure */
+
+typedef struct {
+ unsigned int slot; /* MCA-Slot-# */
+ int realirq; /* memorizes actual IRQ, even when
+ currently not allocated */
+ ibmlana_medium medium; /* physical cannector */
+ u32 tdastart, txbufstart, /* addresses */
+ rrastart, rxbufstart, rdastart, rxbufcnt, txusedcnt;
+ int nextrxdescr, /* next rx descriptor to be used */
+ lastrxdescr, /* last free rx descriptor */
+ nexttxdescr, /* last tx descriptor to be used */
+ currtxdescr, /* tx descriptor currently tx'ed */
+ txused[TXBUFCNT]; /* busy flags */
+ void __iomem *base;
+ spinlock_t lock;
+} ibmlana_priv;
+
+/* this card uses quite a lot of I/O ports...luckily the MCA bus decodes
+ a full 64K I/O range... */
+
+#define IBM_LANA_IORANGE 0xa0
+
+/* Command Register: */
+
+#define SONIC_CMDREG 0x00
+#define CMDREG_HTX 0x0001 /* halt transmission */
+#define CMDREG_TXP 0x0002 /* start transmission */
+#define CMDREG_RXDIS 0x0004 /* disable receiver */
+#define CMDREG_RXEN 0x0008 /* enable receiver */
+#define CMDREG_STP 0x0010 /* stop timer */
+#define CMDREG_ST 0x0020 /* start timer */
+#define CMDREG_RST 0x0080 /* software reset */
+#define CMDREG_RRRA 0x0100 /* force SONIC to read first RRA */
+#define CMDREG_LCAM 0x0200 /* force SONIC to read CAM descrs */
+
+/* Data Configuration Register */
+
+#define SONIC_DCREG 0x02
+#define DCREG_EXBUS 0x8000 /* Extended Bus Mode */
+#define DCREG_LBR 0x2000 /* Latched Bus Retry */
+#define DCREG_PO1 0x1000 /* Programmable Outputs */
+#define DCREG_PO0 0x0800
+#define DCREG_SBUS 0x0400 /* Synchronous Bus Mode */
+#define DCREG_USR1 0x0200 /* User Definable Pins */
+#define DCREG_USR0 0x0100
+#define DCREG_WC0 0x0000 /* 0..3 Wait States */
+#define DCREG_WC1 0x0040
+#define DCREG_WC2 0x0080
+#define DCREG_WC3 0x00c0
+#define DCREG_DW16 0x0000 /* 16 bit Bus Mode */
+#define DCREG_DW32 0x0020 /* 32 bit Bus Mode */
+#define DCREG_BMS 0x0010 /* Block Mode Select */
+#define DCREG_RFT4 0x0000 /* 4/8/16/24 bytes RX Threshold */
+#define DCREG_RFT8 0x0004
+#define DCREG_RFT16 0x0008
+#define DCREG_RFT24 0x000c
+#define DCREG_TFT8 0x0000 /* 8/16/24/28 bytes TX Threshold */
+#define DCREG_TFT16 0x0001
+#define DCREG_TFT24 0x0002
+#define DCREG_TFT28 0x0003
+
+/* Receive Control Register */
+
+#define SONIC_RCREG 0x04
+#define RCREG_ERR 0x8000 /* accept damaged and collided pkts */
+#define RCREG_RNT 0x4000 /* accept packets that are < 64 */
+#define RCREG_BRD 0x2000 /* accept broadcasts */
+#define RCREG_PRO 0x1000 /* promiscuous mode */
+#define RCREG_AMC 0x0800 /* accept all multicasts */
+#define RCREG_LB_NONE 0x0000 /* no loopback */
+#define RCREG_LB_MAC 0x0200 /* MAC loopback */
+#define RCREG_LB_ENDEC 0x0400 /* ENDEC loopback */
+#define RCREG_LB_XVR 0x0600 /* Transceiver loopback */
+#define RCREG_MC 0x0100 /* Multicast received */
+#define RCREG_BC 0x0080 /* Broadcast received */
+#define RCREG_LPKT 0x0040 /* last packet in RBA */
+#define RCREG_CRS 0x0020 /* carrier sense present */
+#define RCREG_COL 0x0010 /* recv'd packet with collision */
+#define RCREG_CRCR 0x0008 /* recv'd packet with CRC error */
+#define RCREG_FAER 0x0004 /* recv'd packet with inv. framing */
+#define RCREG_LBK 0x0002 /* recv'd loopback packet */
+#define RCREG_PRX 0x0001 /* recv'd packet is OK */
+
+/* Transmit Control Register */
+
+#define SONIC_TCREG 0x06
+#define TCREG_PINT 0x8000 /* generate interrupt after TDA read */
+#define TCREG_POWC 0x4000 /* timer start out of window detect */
+#define TCREG_CRCI 0x2000 /* inhibit CRC generation */
+#define TCREG_EXDIS 0x1000 /* disable excessive deferral timer */
+#define TCREG_EXD 0x0400 /* excessive deferral occurred */
+#define TCREG_DEF 0x0200 /* single deferral occurred */
+#define TCREG_NCRS 0x0100 /* no carrier detected */
+#define TCREG_CRSL 0x0080 /* carrier lost */
+#define TCREG_EXC 0x0040 /* excessive collisions occurred */
+#define TCREG_OWC 0x0020 /* out of window collision occurred */
+#define TCREG_PMB 0x0008 /* packet monitored bad */
+#define TCREG_FU 0x0004 /* FIFO underrun */
+#define TCREG_BCM 0x0002 /* byte count mismatch of fragments */
+#define TCREG_PTX 0x0001 /* packet transmitted OK */
+
+/* Interrupt Mask Register */
+
+#define SONIC_IMREG 0x08
+#define IMREG_BREN 0x4000 /* interrupt when bus retry occurred */
+#define IMREG_HBLEN 0x2000 /* interrupt when heartbeat lost */
+#define IMREG_LCDEN 0x1000 /* interrupt when CAM loaded */
+#define IMREG_PINTEN 0x0800 /* interrupt when PINT in TDA set */
+#define IMREG_PRXEN 0x0400 /* interrupt when packet received */
+#define IMREG_PTXEN 0x0200 /* interrupt when packet was sent */
+#define IMREG_TXEREN 0x0100 /* interrupt when send failed */
+#define IMREG_TCEN 0x0080 /* interrupt when timer completed */
+#define IMREG_RDEEN 0x0040 /* interrupt when RDA exhausted */
+#define IMREG_RBEEN 0x0020 /* interrupt when RBA exhausted */
+#define IMREG_RBAEEN 0x0010 /* interrupt when RBA too short */
+#define IMREG_CRCEN 0x0008 /* interrupt when CRC counter rolls */
+#define IMREG_FAEEN 0x0004 /* interrupt when FAE counter rolls */
+#define IMREG_MPEN 0x0002 /* interrupt when MP counter rolls */
+#define IMREG_RFOEN 0x0001 /* interrupt when Rx FIFO overflows */
+
+/* Interrupt Status Register */
+
+#define SONIC_ISREG 0x0a
+#define ISREG_BR 0x4000 /* bus retry occurred */
+#define ISREG_HBL 0x2000 /* heartbeat lost */
+#define ISREG_LCD 0x1000 /* CAM loaded */
+#define ISREG_PINT 0x0800 /* PINT in TDA set */
+#define ISREG_PKTRX 0x0400 /* packet received */
+#define ISREG_TXDN 0x0200 /* packet was sent */
+#define ISREG_TXER 0x0100 /* send failed */
+#define ISREG_TC 0x0080 /* timer completed */
+#define ISREG_RDE 0x0040 /* RDA exhausted */
+#define ISREG_RBE 0x0020 /* RBA exhausted */
+#define ISREG_RBAE 0x0010 /* RBA too short for received frame */
+#define ISREG_CRC 0x0008 /* CRC counter rolls over */
+#define ISREG_FAE 0x0004 /* FAE counter rolls over */
+#define ISREG_MP 0x0002 /* MP counter rolls over */
+#define ISREG_RFO 0x0001 /* Rx FIFO overflows */
+
+#define SONIC_UTDA 0x0c /* current transmit descr address */
+#define SONIC_CTDA 0x0e
+
+#define SONIC_URDA 0x1a /* current receive descr address */
+#define SONIC_CRDA 0x1c
+
+#define SONIC_CRBA0 0x1e /* current receive buffer address */
+#define SONIC_CRBA1 0x20
+
+#define SONIC_RBWC0 0x22 /* word count in receive buffer */
+#define SONIC_RBWC1 0x24
+
+#define SONIC_EOBC 0x26 /* minimum space to be free in RBA */
+
+#define SONIC_URRA 0x28 /* upper address of CDA & Recv Area */
+
+#define SONIC_RSA 0x2a /* start of receive resource area */
+
+#define SONIC_REA 0x2c /* end of receive resource area */
+
+#define SONIC_RRP 0x2e /* resource read pointer */
+
+#define SONIC_RWP 0x30 /* resource write pointer */
+
+#define SONIC_CAMEPTR 0x42 /* CAM entry pointer */
+
+#define SONIC_CAMADDR2 0x44 /* CAM address ports */
+#define SONIC_CAMADDR1 0x46
+#define SONIC_CAMADDR0 0x48
+
+#define SONIC_CAMPTR 0x4c /* lower address of CDA */
+
+#define SONIC_CAMCNT 0x4e /* # of CAM descriptors to load */
+
+/* Data Configuration Register 2 */
+
+#define SONIC_DCREG2 0x7e
+#define DCREG2_EXPO3 0x8000 /* extended programmable outputs */
+#define DCREG2_EXPO2 0x4000
+#define DCREG2_EXPO1 0x2000
+#define DCREG2_EXPO0 0x1000
+#define DCREG2_HD 0x0800 /* heartbeat disable */
+#define DCREG2_JD 0x0200 /* jabber timer disable */
+#define DCREG2_AUTO 0x0100 /* enable AUI/TP auto selection */
+#define DCREG2_XWRAP 0x0040 /* TP transceiver loopback */
+#define DCREG2_PH 0x0010 /* HOLD request timing */
+#define DCREG2_PCM 0x0004 /* packet compress when matched */
+#define DCREG2_PCNM 0x0002 /* packet compress when not matched */
+#define DCREG2_RJCM 0x0001 /* inverse packet match via CAM */
+
+/* Board Control Register: Enable RAM, Interrupts... */
+
+#define BCMREG 0x80
+#define BCMREG_RAMEN 0x80 /* switch over to RAM */
+#define BCMREG_IPEND 0x40 /* interrupt pending ? */
+#define BCMREG_RESET 0x08 /* reset board */
+#define BCMREG_16BIT 0x04 /* adapter in 16-bit slot */
+#define BCMREG_RAMWIN 0x02 /* enable RAM window */
+#define BCMREG_IEN 0x01 /* interrupt enable */
+
+/* MAC Address PROM */
+
+#define MACADDRPROM 0x92
+
+/* structure of a CAM entry */
+
+typedef struct {
+ u32 index; /* pointer into CAM area */
+ u32 addr0; /* address part (bits 0..15 used) */
+ u32 addr1;
+ u32 addr2;
+} camentry_t;
+
+/* structure of a receive resource */
+
+typedef struct {
+ u32 startlo; /* start address (bits 0..15 used) */
+ u32 starthi;
+ u32 cntlo; /* size in 16-bit quantities */
+ u32 cnthi;
+} rra_t;
+
+/* structure of a receive descriptor */
+
+typedef struct {
+ u32 status; /* packet status */
+ u32 length; /* length in bytes */
+ u32 startlo; /* start address */
+ u32 starthi;
+ u32 seqno; /* frame sequence */
+ u32 link; /* pointer to next descriptor */
+ /* bit 0 = EOL */
+ u32 inuse; /* !=0 --> free for SONIC to write */
+} rda_t;
+
+/* structure of a transmit descriptor */
+
+typedef struct {
+ u32 status; /* transmit status */
+ u32 config; /* value for TCR */
+ u32 length; /* total length */
+ u32 fragcount; /* number of fragments */
+ u32 startlo; /* start address of fragment */
+ u32 starthi;
+ u32 fraglength; /* length of this fragment */
+ /* more address/length triplets may */
+ /* follow here */
+ u32 link; /* pointer to next descriptor */
+ /* bit 0 = EOL */
+} tda_t;
+
+#endif /* _IBM_LANA_DRIVER_ */
+
+#endif /* _IBM_LANA_INCLUDE_ */
--- /dev/null
+/*
+ * jazzsonic.c
+ *
+ * (C) 2005 Finn Thain
+ *
+ * Converted to DMA API, and (from the mac68k project) introduced
+ * dhd's support for 16-bit cards.
+ *
+ * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
+ *
+ * This driver is based on work from Andreas Busse, but most of
+ * the code is rewritten.
+ *
+ * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
+ *
+ * A driver for the onboard Sonic ethernet controller on Mips Jazz
+ * systems (Acer Pica-61, Mips Magnum 4000, Olivetti M700 and
+ * perhaps others, too)
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/gfp.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+
+#include <asm/bootinfo.h>
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/jazz.h>
+#include <asm/jazzdma.h>
+
+static char jazz_sonic_string[] = "jazzsonic";
+
+#define SONIC_MEM_SIZE 0x100
+
+#include "sonic.h"
+
+/*
+ * Macros to access SONIC registers
+ */
+#define SONIC_READ(reg) (*((volatile unsigned int *)dev->base_addr+reg))
+
+#define SONIC_WRITE(reg,val) \
+do { \
+ *((volatile unsigned int *)dev->base_addr+(reg)) = (val); \
+} while (0)
+
+
+/* use 0 for production, 1 for verification, >1 for debug */
+#ifdef SONIC_DEBUG
+static unsigned int sonic_debug = SONIC_DEBUG;
+#else
+static unsigned int sonic_debug = 1;
+#endif
+
+/*
+ * We cannot use station (ethernet) address prefixes to detect the
+ * sonic controller since these are board manufacturer depended.
+ * So we check for known Silicon Revision IDs instead.
+ */
+static unsigned short known_revisions[] =
+{
+ 0x04, /* Mips Magnum 4000 */
+ 0xffff /* end of list */
+};
+
+static int jazzsonic_open(struct net_device* dev)
+{
+ int retval;
+
+ retval = request_irq(dev->irq, sonic_interrupt, IRQF_DISABLED,
+ "sonic", dev);
+ if (retval) {
+ printk(KERN_ERR "%s: unable to get IRQ %d.\n",
+ dev->name, dev->irq);
+ return retval;
+ }
+
+ retval = sonic_open(dev);
+ if (retval)
+ free_irq(dev->irq, dev);
+ return retval;
+}
+
+static int jazzsonic_close(struct net_device* dev)
+{
+ int err;
+ err = sonic_close(dev);
+ free_irq(dev->irq, dev);
+ return err;
+}
+
+static const struct net_device_ops sonic_netdev_ops = {
+ .ndo_open = jazzsonic_open,
+ .ndo_stop = jazzsonic_close,
+ .ndo_start_xmit = sonic_send_packet,
+ .ndo_get_stats = sonic_get_stats,
+ .ndo_set_multicast_list = sonic_multicast_list,
+ .ndo_tx_timeout = sonic_tx_timeout,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+};
+
+static int __devinit sonic_probe1(struct net_device *dev)
+{
+ static unsigned version_printed;
+ unsigned int silicon_revision;
+ unsigned int val;
+ struct sonic_local *lp = netdev_priv(dev);
+ int err = -ENODEV;
+ int i;
+
+ if (!request_mem_region(dev->base_addr, SONIC_MEM_SIZE, jazz_sonic_string))
+ return -EBUSY;
+
+ /*
+ * get the Silicon Revision ID. If this is one of the known
+ * one assume that we found a SONIC ethernet controller at
+ * the expected location.
+ */
+ silicon_revision = SONIC_READ(SONIC_SR);
+ if (sonic_debug > 1)
+ printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);
+
+ i = 0;
+ while (known_revisions[i] != 0xffff &&
+ known_revisions[i] != silicon_revision)
+ i++;
+
+ if (known_revisions[i] == 0xffff) {
+ printk("SONIC ethernet controller not found (0x%4x)\n",
+ silicon_revision);
+ goto out;
+ }
+
+ if (sonic_debug && version_printed++ == 0)
+ printk(version);
+
+ printk(KERN_INFO "%s: Sonic ethernet found at 0x%08lx, ",
+ dev_name(lp->device), dev->base_addr);
+
+ /*
+ * Put the sonic into software reset, then
+ * retrieve and print the ethernet address.
+ */
+ SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
+ SONIC_WRITE(SONIC_CEP,0);
+ for (i=0; i<3; i++) {
+ val = SONIC_READ(SONIC_CAP0-i);
+ dev->dev_addr[i*2] = val;
+ dev->dev_addr[i*2+1] = val >> 8;
+ }
+
+ err = -ENOMEM;
+
+ /* Initialize the device structure. */
+
+ lp->dma_bitmode = SONIC_BITMODE32;
+
+ /* Allocate the entire chunk of memory for the descriptors.
+ Note that this cannot cross a 64K boundary. */
+ if ((lp->descriptors = dma_alloc_coherent(lp->device,
+ SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+ &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
+ printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n",
+ dev_name(lp->device));
+ goto out;
+ }
+
+ /* Now set up the pointers to point to the appropriate places */
+ lp->cda = lp->descriptors;
+ lp->tda = lp->cda + (SIZEOF_SONIC_CDA
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+ lp->cda_laddr = lp->descriptors_laddr;
+ lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+ dev->netdev_ops = &sonic_netdev_ops;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ /*
+ * clear tally counter
+ */
+ SONIC_WRITE(SONIC_CRCT,0xffff);
+ SONIC_WRITE(SONIC_FAET,0xffff);
+ SONIC_WRITE(SONIC_MPT,0xffff);
+
+ return 0;
+out:
+ release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
+ return err;
+}
+
+/*
+ * Probe for a SONIC ethernet controller on a Mips Jazz board.
+ * Actually probing is superfluous but we're paranoid.
+ */
+static int __devinit jazz_sonic_probe(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct sonic_local *lp;
+ struct resource *res;
+ int err = 0;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
+ dev = alloc_etherdev(sizeof(struct sonic_local));
+ if (!dev)
+ return -ENOMEM;
+
+ lp = netdev_priv(dev);
+ lp->device = &pdev->dev;
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ platform_set_drvdata(pdev, dev);
+
+ netdev_boot_setup_check(dev);
+
+ dev->base_addr = res->start;
+ dev->irq = platform_get_irq(pdev, 0);
+ err = sonic_probe1(dev);
+ if (err)
+ goto out;
+ err = register_netdev(dev);
+ if (err)
+ goto out1;
+
+ printk("%s: MAC %pM IRQ %d\n", dev->name, dev->dev_addr, dev->irq);
+
+ return 0;
+
+out1:
+ release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
+out:
+ free_netdev(dev);
+
+ return err;
+}
+
+MODULE_DESCRIPTION("Jazz SONIC ethernet driver");
+module_param(sonic_debug, int, 0);
+MODULE_PARM_DESC(sonic_debug, "jazzsonic debug level (1-4)");
+MODULE_ALIAS("platform:jazzsonic");
+
+#include "sonic.c"
+
+static int __devexit jazz_sonic_device_remove (struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct sonic_local* lp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+ lp->descriptors, lp->descriptors_laddr);
+ release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
+ free_netdev(dev);
+
+ return 0;
+}
+
+static struct platform_driver jazz_sonic_driver = {
+ .probe = jazz_sonic_probe,
+ .remove = __devexit_p(jazz_sonic_device_remove),
+ .driver = {
+ .name = jazz_sonic_string,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init jazz_sonic_init_module(void)
+{
+ return platform_driver_register(&jazz_sonic_driver);
+}
+
+static void __exit jazz_sonic_cleanup_module(void)
+{
+ platform_driver_unregister(&jazz_sonic_driver);
+}
+
+module_init(jazz_sonic_init_module);
+module_exit(jazz_sonic_cleanup_module);
--- /dev/null
+/*
+ * macsonic.c
+ *
+ * (C) 2005 Finn Thain
+ *
+ * Converted to DMA API, converted to unified driver model, made it work as
+ * a module again, and from the mac68k project, introduced more 32-bit cards
+ * and dhd's support for 16-bit cards.
+ *
+ * (C) 1998 Alan Cox
+ *
+ * Debugging Andreas Ehliar, Michael Schmitz
+ *
+ * Based on code
+ * (C) 1996 by Thomas Bogendoerfer (tsbogend@bigbug.franken.de)
+ *
+ * This driver is based on work from Andreas Busse, but most of
+ * the code is rewritten.
+ *
+ * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
+ *
+ * A driver for the Mac onboard Sonic ethernet chip.
+ *
+ * 98/12/21 MSch: judged from tests on Q800, it's basically working,
+ * but eating up both receive and transmit resources
+ * and duplicating packets. Needs more testing.
+ *
+ * 99/01/03 MSch: upgraded to version 0.92 of the core driver, fixed.
+ *
+ * 00/10/31 sammy@oh.verio.com: Updated driver for 2.4 kernels, fixed problems
+ * on centris.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/gfp.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/nubus.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/bitrev.h>
+#include <linux/slab.h>
+
+#include <asm/bootinfo.h>
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+#include <asm/hwtest.h>
+#include <asm/dma.h>
+#include <asm/macintosh.h>
+#include <asm/macints.h>
+#include <asm/mac_via.h>
+
+static char mac_sonic_string[] = "macsonic";
+
+#include "sonic.h"
+
+/* These should basically be bus-size and endian independent (since
+ the SONIC is at least smart enough that it uses the same endianness
+ as the host, unlike certain less enlightened Macintosh NICs) */
+#define SONIC_READ(reg) (nubus_readw(dev->base_addr + (reg * 4) \
+ + lp->reg_offset))
+#define SONIC_WRITE(reg,val) (nubus_writew(val, dev->base_addr + (reg * 4) \
+ + lp->reg_offset))
+
+/* use 0 for production, 1 for verification, >1 for debug */
+#ifdef SONIC_DEBUG
+static unsigned int sonic_debug = SONIC_DEBUG;
+#else
+static unsigned int sonic_debug = 1;
+#endif
+
+static int sonic_version_printed;
+
+/* For onboard SONIC */
+#define ONBOARD_SONIC_REGISTERS 0x50F0A000
+#define ONBOARD_SONIC_PROM_BASE 0x50f08000
+
+enum macsonic_type {
+ MACSONIC_DUODOCK,
+ MACSONIC_APPLE,
+ MACSONIC_APPLE16,
+ MACSONIC_DAYNA,
+ MACSONIC_DAYNALINK
+};
+
+/* For the built-in SONIC in the Duo Dock */
+#define DUODOCK_SONIC_REGISTERS 0xe10000
+#define DUODOCK_SONIC_PROM_BASE 0xe12000
+
+/* For Apple-style NuBus SONIC */
+#define APPLE_SONIC_REGISTERS 0
+#define APPLE_SONIC_PROM_BASE 0x40000
+
+/* Daynalink LC SONIC */
+#define DAYNALINK_PROM_BASE 0x400000
+
+/* For Dayna-style NuBus SONIC (haven't seen one yet) */
+#define DAYNA_SONIC_REGISTERS 0x180000
+/* This is what OpenBSD says. However, this is definitely in NuBus
+ ROM space so we should be able to get it by walking the NuBus
+ resource directories */
+#define DAYNA_SONIC_MAC_ADDR 0xffe004
+
+#define SONIC_READ_PROM(addr) nubus_readb(prom_addr+addr)
+
+/*
+ * For reversing the PROM address
+ */
+
+static inline void bit_reverse_addr(unsigned char addr[6])
+{
+ int i;
+
+ for(i = 0; i < 6; i++)
+ addr[i] = bitrev8(addr[i]);
+}
+
+static irqreturn_t macsonic_interrupt(int irq, void *dev_id)
+{
+ irqreturn_t result;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ result = sonic_interrupt(irq, dev_id);
+ local_irq_restore(flags);
+ return result;
+}
+
+static int macsonic_open(struct net_device* dev)
+{
+ int retval;
+
+ retval = request_irq(dev->irq, sonic_interrupt, IRQ_FLG_FAST,
+ "sonic", dev);
+ if (retval) {
+ printk(KERN_ERR "%s: unable to get IRQ %d.\n",
+ dev->name, dev->irq);
+ goto err;
+ }
+ /* Under the A/UX interrupt scheme, the onboard SONIC interrupt comes
+ * in at priority level 3. However, we sometimes get the level 2 inter-
+ * rupt as well, which must prevent re-entrance of the sonic handler.
+ */
+ if (dev->irq == IRQ_AUTO_3) {
+ retval = request_irq(IRQ_NUBUS_9, macsonic_interrupt,
+ IRQ_FLG_FAST, "sonic", dev);
+ if (retval) {
+ printk(KERN_ERR "%s: unable to get IRQ %d.\n",
+ dev->name, IRQ_NUBUS_9);
+ goto err_irq;
+ }
+ }
+ retval = sonic_open(dev);
+ if (retval)
+ goto err_irq_nubus;
+ return 0;
+
+err_irq_nubus:
+ if (dev->irq == IRQ_AUTO_3)
+ free_irq(IRQ_NUBUS_9, dev);
+err_irq:
+ free_irq(dev->irq, dev);
+err:
+ return retval;
+}
+
+static int macsonic_close(struct net_device* dev)
+{
+ int err;
+ err = sonic_close(dev);
+ free_irq(dev->irq, dev);
+ if (dev->irq == IRQ_AUTO_3)
+ free_irq(IRQ_NUBUS_9, dev);
+ return err;
+}
+
+static const struct net_device_ops macsonic_netdev_ops = {
+ .ndo_open = macsonic_open,
+ .ndo_stop = macsonic_close,
+ .ndo_start_xmit = sonic_send_packet,
+ .ndo_set_multicast_list = sonic_multicast_list,
+ .ndo_tx_timeout = sonic_tx_timeout,
+ .ndo_get_stats = sonic_get_stats,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+};
+
+static int __devinit macsonic_init(struct net_device *dev)
+{
+ struct sonic_local* lp = netdev_priv(dev);
+
+ /* Allocate the entire chunk of memory for the descriptors.
+ Note that this cannot cross a 64K boundary. */
+ if ((lp->descriptors = dma_alloc_coherent(lp->device,
+ SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+ &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
+ printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n",
+ dev_name(lp->device));
+ return -ENOMEM;
+ }
+
+ /* Now set up the pointers to point to the appropriate places */
+ lp->cda = lp->descriptors;
+ lp->tda = lp->cda + (SIZEOF_SONIC_CDA
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+ lp->cda_laddr = lp->descriptors_laddr;
+ lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+ dev->netdev_ops = &macsonic_netdev_ops;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ /*
+ * clear tally counter
+ */
+ SONIC_WRITE(SONIC_CRCT, 0xffff);
+ SONIC_WRITE(SONIC_FAET, 0xffff);
+ SONIC_WRITE(SONIC_MPT, 0xffff);
+
+ return 0;
+}
+
+#define INVALID_MAC(mac) (memcmp(mac, "\x08\x00\x07", 3) && \
+ memcmp(mac, "\x00\xA0\x40", 3) && \
+ memcmp(mac, "\x00\x80\x19", 3) && \
+ memcmp(mac, "\x00\x05\x02", 3))
+
+static void __devinit mac_onboard_sonic_ethernet_addr(struct net_device *dev)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ const int prom_addr = ONBOARD_SONIC_PROM_BASE;
+ unsigned short val;
+
+ /*
+ * On NuBus boards we can sometimes look in the ROM resources.
+ * No such luck for comm-slot/onboard.
+ * On the PowerBook 520, the PROM base address is a mystery.
+ */
+ if (hwreg_present((void *)prom_addr)) {
+ int i;
+
+ for (i = 0; i < 6; i++)
+ dev->dev_addr[i] = SONIC_READ_PROM(i);
+ if (!INVALID_MAC(dev->dev_addr))
+ return;
+
+ /*
+ * Most of the time, the address is bit-reversed. The NetBSD
+ * source has a rather long and detailed historical account of
+ * why this is so.
+ */
+ bit_reverse_addr(dev->dev_addr);
+ if (!INVALID_MAC(dev->dev_addr))
+ return;
+
+ /*
+ * If we still have what seems to be a bogus address, we'll
+ * look in the CAM. The top entry should be ours.
+ */
+ printk(KERN_WARNING "macsonic: MAC address in PROM seems "
+ "to be invalid, trying CAM\n");
+ } else {
+ printk(KERN_WARNING "macsonic: cannot read MAC address from "
+ "PROM, trying CAM\n");
+ }
+
+ /* This only works if MacOS has already initialized the card. */
+
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
+ SONIC_WRITE(SONIC_CEP, 15);
+
+ val = SONIC_READ(SONIC_CAP2);
+ dev->dev_addr[5] = val >> 8;
+ dev->dev_addr[4] = val & 0xff;
+ val = SONIC_READ(SONIC_CAP1);
+ dev->dev_addr[3] = val >> 8;
+ dev->dev_addr[2] = val & 0xff;
+ val = SONIC_READ(SONIC_CAP0);
+ dev->dev_addr[1] = val >> 8;
+ dev->dev_addr[0] = val & 0xff;
+
+ if (!INVALID_MAC(dev->dev_addr))
+ return;
+
+ /* Still nonsense ... messed up someplace! */
+
+ printk(KERN_WARNING "macsonic: MAC address in CAM entry 15 "
+ "seems invalid, will use a random MAC\n");
+ random_ether_addr(dev->dev_addr);
+}
+
+static int __devinit mac_onboard_sonic_probe(struct net_device *dev)
+{
+ /* Bwahahaha */
+ static int once_is_more_than_enough;
+ struct sonic_local* lp = netdev_priv(dev);
+ int sr;
+ int commslot = 0;
+
+ if (once_is_more_than_enough)
+ return -ENODEV;
+ once_is_more_than_enough = 1;
+
+ if (!MACH_IS_MAC)
+ return -ENODEV;
+
+ if (macintosh_config->ether_type != MAC_ETHER_SONIC)
+ return -ENODEV;
+
+ printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. ");
+
+ /* Bogus probing, on the models which may or may not have
+ Ethernet (BTW, the Ethernet *is* always at the same
+ address, and nothing else lives there, at least if Apple's
+ documentation is to be believed) */
+ if (macintosh_config->ident == MAC_MODEL_Q630 ||
+ macintosh_config->ident == MAC_MODEL_P588 ||
+ macintosh_config->ident == MAC_MODEL_P575 ||
+ macintosh_config->ident == MAC_MODEL_C610) {
+ unsigned long flags;
+ int card_present;
+
+ local_irq_save(flags);
+ card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
+ local_irq_restore(flags);
+
+ if (!card_present) {
+ printk("none.\n");
+ return -ENODEV;
+ }
+ commslot = 1;
+ }
+
+ printk("yes\n");
+
+ /* Danger! My arms are flailing wildly! You *must* set lp->reg_offset
+ * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
+ dev->base_addr = ONBOARD_SONIC_REGISTERS;
+ if (via_alt_mapping)
+ dev->irq = IRQ_AUTO_3;
+ else
+ dev->irq = IRQ_NUBUS_9;
+
+ if (!sonic_version_printed) {
+ printk(KERN_INFO "%s", version);
+ sonic_version_printed = 1;
+ }
+ printk(KERN_INFO "%s: onboard / comm-slot SONIC at 0x%08lx\n",
+ dev_name(lp->device), dev->base_addr);
+
+ /* The PowerBook's SONIC is 16 bit always. */
+ if (macintosh_config->ident == MAC_MODEL_PB520) {
+ lp->reg_offset = 0;
+ lp->dma_bitmode = SONIC_BITMODE16;
+ sr = SONIC_READ(SONIC_SR);
+ } else if (commslot) {
+ /* Some of the comm-slot cards are 16 bit. But some
+ of them are not. The 32-bit cards use offset 2 and
+ have known revisions, we try reading the revision
+ register at offset 2, if we don't get a known revision
+ we assume 16 bit at offset 0. */
+ lp->reg_offset = 2;
+ lp->dma_bitmode = SONIC_BITMODE16;
+
+ sr = SONIC_READ(SONIC_SR);
+ if (sr == 0x0004 || sr == 0x0006 || sr == 0x0100 || sr == 0x0101)
+ /* 83932 is 0x0004 or 0x0006, 83934 is 0x0100 or 0x0101 */
+ lp->dma_bitmode = SONIC_BITMODE32;
+ else {
+ lp->dma_bitmode = SONIC_BITMODE16;
+ lp->reg_offset = 0;
+ sr = SONIC_READ(SONIC_SR);
+ }
+ } else {
+ /* All onboard cards are at offset 2 with 32 bit DMA. */
+ lp->reg_offset = 2;
+ lp->dma_bitmode = SONIC_BITMODE32;
+ sr = SONIC_READ(SONIC_SR);
+ }
+ printk(KERN_INFO
+ "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
+ dev_name(lp->device), sr, lp->dma_bitmode?32:16, lp->reg_offset);
+
+#if 0 /* This is sometimes useful to find out how MacOS configured the card. */
+ printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
+ SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
+#endif
+
+ /* Software reset, then initialize control registers. */
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
+
+ SONIC_WRITE(SONIC_DCR, SONIC_DCR_EXBUS | SONIC_DCR_BMS |
+ SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
+ (lp->dma_bitmode ? SONIC_DCR_DW : 0));
+
+ /* This *must* be written back to in order to restore the
+ * extended programmable output bits, as it may not have been
+ * initialised since the hardware reset. */
+ SONIC_WRITE(SONIC_DCR2, 0);
+
+ /* Clear *and* disable interrupts to be on the safe side */
+ SONIC_WRITE(SONIC_IMR, 0);
+ SONIC_WRITE(SONIC_ISR, 0x7fff);
+
+ /* Now look for the MAC address. */
+ mac_onboard_sonic_ethernet_addr(dev);
+
+ /* Shared init code */
+ return macsonic_init(dev);
+}
+
+static int __devinit mac_nubus_sonic_ethernet_addr(struct net_device *dev,
+ unsigned long prom_addr,
+ int id)
+{
+ int i;
+ for(i = 0; i < 6; i++)
+ dev->dev_addr[i] = SONIC_READ_PROM(i);
+
+ /* Some of the addresses are bit-reversed */
+ if (id != MACSONIC_DAYNA)
+ bit_reverse_addr(dev->dev_addr);
+
+ return 0;
+}
+
+static int __devinit macsonic_ident(struct nubus_dev *ndev)
+{
+ if (ndev->dr_hw == NUBUS_DRHW_ASANTE_LC &&
+ ndev->dr_sw == NUBUS_DRSW_SONIC_LC)
+ return MACSONIC_DAYNALINK;
+ if (ndev->dr_hw == NUBUS_DRHW_SONIC &&
+ ndev->dr_sw == NUBUS_DRSW_APPLE) {
+ /* There has to be a better way to do this... */
+ if (strstr(ndev->board->name, "DuoDock"))
+ return MACSONIC_DUODOCK;
+ else
+ return MACSONIC_APPLE;
+ }
+
+ if (ndev->dr_hw == NUBUS_DRHW_SMC9194 &&
+ ndev->dr_sw == NUBUS_DRSW_DAYNA)
+ return MACSONIC_DAYNA;
+
+ if (ndev->dr_hw == NUBUS_DRHW_APPLE_SONIC_LC &&
+ ndev->dr_sw == 0) { /* huh? */
+ return MACSONIC_APPLE16;
+ }
+ return -1;
+}
+
+static int __devinit mac_nubus_sonic_probe(struct net_device *dev)
+{
+ static int slots;
+ struct nubus_dev* ndev = NULL;
+ struct sonic_local* lp = netdev_priv(dev);
+ unsigned long base_addr, prom_addr;
+ u16 sonic_dcr;
+ int id = -1;
+ int reg_offset, dma_bitmode;
+
+ /* Find the first SONIC that hasn't been initialized already */
+ while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK,
+ NUBUS_TYPE_ETHERNET, ndev)) != NULL)
+ {
+ /* Have we seen it already? */
+ if (slots & (1<<ndev->board->slot))
+ continue;
+ slots |= 1<<ndev->board->slot;
+
+ /* Is it one of ours? */
+ if ((id = macsonic_ident(ndev)) != -1)
+ break;
+ }
+
+ if (ndev == NULL)
+ return -ENODEV;
+
+ switch (id) {
+ case MACSONIC_DUODOCK:
+ base_addr = ndev->board->slot_addr + DUODOCK_SONIC_REGISTERS;
+ prom_addr = ndev->board->slot_addr + DUODOCK_SONIC_PROM_BASE;
+ sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 |
+ SONIC_DCR_TFT0;
+ reg_offset = 2;
+ dma_bitmode = SONIC_BITMODE32;
+ break;
+ case MACSONIC_APPLE:
+ base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
+ prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
+ sonic_dcr = SONIC_DCR_BMS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0;
+ reg_offset = 0;
+ dma_bitmode = SONIC_BITMODE32;
+ break;
+ case MACSONIC_APPLE16:
+ base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
+ prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
+ sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
+ SONIC_DCR_PO1 | SONIC_DCR_BMS;
+ reg_offset = 0;
+ dma_bitmode = SONIC_BITMODE16;
+ break;
+ case MACSONIC_DAYNALINK:
+ base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
+ prom_addr = ndev->board->slot_addr + DAYNALINK_PROM_BASE;
+ sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
+ SONIC_DCR_PO1 | SONIC_DCR_BMS;
+ reg_offset = 0;
+ dma_bitmode = SONIC_BITMODE16;
+ break;
+ case MACSONIC_DAYNA:
+ base_addr = ndev->board->slot_addr + DAYNA_SONIC_REGISTERS;
+ prom_addr = ndev->board->slot_addr + DAYNA_SONIC_MAC_ADDR;
+ sonic_dcr = SONIC_DCR_BMS |
+ SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1;
+ reg_offset = 0;
+ dma_bitmode = SONIC_BITMODE16;
+ break;
+ default:
+ printk(KERN_ERR "macsonic: WTF, id is %d\n", id);
+ return -ENODEV;
+ }
+
+ /* Danger! My arms are flailing wildly! You *must* set lp->reg_offset
+ * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
+ dev->base_addr = base_addr;
+ lp->reg_offset = reg_offset;
+ lp->dma_bitmode = dma_bitmode;
+ dev->irq = SLOT2IRQ(ndev->board->slot);
+
+ if (!sonic_version_printed) {
+ printk(KERN_INFO "%s", version);
+ sonic_version_printed = 1;
+ }
+ printk(KERN_INFO "%s: %s in slot %X\n",
+ dev_name(lp->device), ndev->board->name, ndev->board->slot);
+ printk(KERN_INFO "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
+ dev_name(lp->device), SONIC_READ(SONIC_SR), dma_bitmode?32:16, reg_offset);
+
+#if 0 /* This is sometimes useful to find out how MacOS configured the card. */
+ printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
+ SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
+#endif
+
+ /* Software reset, then initialize control registers. */
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
+ SONIC_WRITE(SONIC_DCR, sonic_dcr | (dma_bitmode ? SONIC_DCR_DW : 0));
+ /* This *must* be written back to in order to restore the
+ * extended programmable output bits, since it may not have been
+ * initialised since the hardware reset. */
+ SONIC_WRITE(SONIC_DCR2, 0);
+
+ /* Clear *and* disable interrupts to be on the safe side */
+ SONIC_WRITE(SONIC_IMR, 0);
+ SONIC_WRITE(SONIC_ISR, 0x7fff);
+
+ /* Now look for the MAC address. */
+ if (mac_nubus_sonic_ethernet_addr(dev, prom_addr, id) != 0)
+ return -ENODEV;
+
+ /* Shared init code */
+ return macsonic_init(dev);
+}
+
+static int __devinit mac_sonic_probe(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct sonic_local *lp;
+ int err;
+
+ dev = alloc_etherdev(sizeof(struct sonic_local));
+ if (!dev)
+ return -ENOMEM;
+
+ lp = netdev_priv(dev);
+ lp->device = &pdev->dev;
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ platform_set_drvdata(pdev, dev);
+
+ /* This will catch fatal stuff like -ENOMEM as well as success */
+ err = mac_onboard_sonic_probe(dev);
+ if (err == 0)
+ goto found;
+ if (err != -ENODEV)
+ goto out;
+ err = mac_nubus_sonic_probe(dev);
+ if (err)
+ goto out;
+found:
+ err = register_netdev(dev);
+ if (err)
+ goto out;
+
+ printk("%s: MAC %pM IRQ %d\n", dev->name, dev->dev_addr, dev->irq);
+
+ return 0;
+
+out:
+ free_netdev(dev);
+
+ return err;
+}
+
+MODULE_DESCRIPTION("Macintosh SONIC ethernet driver");
+module_param(sonic_debug, int, 0);
+MODULE_PARM_DESC(sonic_debug, "macsonic debug level (1-4)");
+MODULE_ALIAS("platform:macsonic");
+
+#include "sonic.c"
+
+static int __devexit mac_sonic_device_remove (struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct sonic_local* lp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+ lp->descriptors, lp->descriptors_laddr);
+ free_netdev(dev);
+
+ return 0;
+}
+
+static struct platform_driver mac_sonic_driver = {
+ .probe = mac_sonic_probe,
+ .remove = __devexit_p(mac_sonic_device_remove),
+ .driver = {
+ .name = mac_sonic_string,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init mac_sonic_init_module(void)
+{
+ return platform_driver_register(&mac_sonic_driver);
+}
+
+static void __exit mac_sonic_cleanup_module(void)
+{
+ platform_driver_unregister(&mac_sonic_driver);
+}
+
+module_init(mac_sonic_init_module);
+module_exit(mac_sonic_cleanup_module);
--- /dev/null
+/* natsemi.c: A Linux PCI Ethernet driver for the NatSemi DP8381x series. */
+/*
+ Written/copyright 1999-2001 by Donald Becker.
+ Portions copyright (c) 2001,2002 Sun Microsystems (thockin@sun.com)
+ Portions copyright 2001,2002 Manfred Spraul (manfred@colorfullife.com)
+ Portions copyright 2004 Harald Welte <laforge@gnumonks.org>
+
+ This software may be used and distributed according to the terms of
+ the GNU General Public License (GPL), incorporated herein by reference.
+ Drivers based on or derived from this code fall under the GPL and must
+ retain the authorship, copyright and license notice. This file is not
+ a complete program and may only be used when the entire operating
+ system is licensed under the GPL. License for under other terms may be
+ available. Contact the original author for details.
+
+ The original author may be reached as becker@scyld.com, or at
+ Scyld Computing Corporation
+ 410 Severn Ave., Suite 210
+ Annapolis MD 21403
+
+ Support information and updates available at
+ http://www.scyld.com/network/netsemi.html
+ [link no longer provides useful info -jgarzik]
+
+
+ TODO:
+ * big endian support with CFG:BEM instead of cpu_to_le32
+*/
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/ethtool.h>
+#include <linux/delay.h>
+#include <linux/rtnetlink.h>
+#include <linux/mii.h>
+#include <linux/crc32.h>
+#include <linux/bitops.h>
+#include <linux/prefetch.h>
+#include <asm/processor.h> /* Processor type for cache alignment. */
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+
+#define DRV_NAME "natsemi"
+#define DRV_VERSION "2.1"
+#define DRV_RELDATE "Sept 11, 2006"
+
+#define RX_OFFSET 2
+
+/* Updated to recommendations in pci-skeleton v2.03. */
+
+/* The user-configurable values.
+ These may be modified when a driver module is loaded.*/
+
+#define NATSEMI_DEF_MSG (NETIF_MSG_DRV | \
+ NETIF_MSG_LINK | \
+ NETIF_MSG_WOL | \
+ NETIF_MSG_RX_ERR | \
+ NETIF_MSG_TX_ERR)
+static int debug = -1;
+
+static int mtu;
+
+/* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
+ This chip uses a 512 element hash table based on the Ethernet CRC. */
+static const int multicast_filter_limit = 100;
+
+/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
+ Setting to > 1518 effectively disables this feature. */
+static int rx_copybreak;
+
+static int dspcfg_workaround = 1;
+
+/* Used to pass the media type, etc.
+ Both 'options[]' and 'full_duplex[]' should exist for driver
+ interoperability.
+ The media type is usually passed in 'options[]'.
+*/
+#define MAX_UNITS 8 /* More are supported, limit only on options */
+static int options[MAX_UNITS];
+static int full_duplex[MAX_UNITS];
+
+/* Operational parameters that are set at compile time. */
+
+/* Keep the ring sizes a power of two for compile efficiency.
+ The compiler will convert <unsigned>'%'<2^N> into a bit mask.
+ Making the Tx ring too large decreases the effectiveness of channel
+ bonding and packet priority.
+ There are no ill effects from too-large receive rings. */
+#define TX_RING_SIZE 16
+#define TX_QUEUE_LEN 10 /* Limit ring entries actually used, min 4. */
+#define RX_RING_SIZE 32
+
+/* Operational parameters that usually are not changed. */
+/* Time in jiffies before concluding the transmitter is hung. */
+#define TX_TIMEOUT (2*HZ)
+
+#define NATSEMI_HW_TIMEOUT 400
+#define NATSEMI_TIMER_FREQ 5*HZ
+#define NATSEMI_PG0_NREGS 64
+#define NATSEMI_RFDR_NREGS 8
+#define NATSEMI_PG1_NREGS 4
+#define NATSEMI_NREGS (NATSEMI_PG0_NREGS + NATSEMI_RFDR_NREGS + \
+ NATSEMI_PG1_NREGS)
+#define NATSEMI_REGS_VER 1 /* v1 added RFDR registers */
+#define NATSEMI_REGS_SIZE (NATSEMI_NREGS * sizeof(u32))
+
+/* Buffer sizes:
+ * The nic writes 32-bit values, even if the upper bytes of
+ * a 32-bit value are beyond the end of the buffer.
+ */
+#define NATSEMI_HEADERS 22 /* 2*mac,type,vlan,crc */
+#define NATSEMI_PADDING 16 /* 2 bytes should be sufficient */
+#define NATSEMI_LONGPKT 1518 /* limit for normal packets */
+#define NATSEMI_RX_LIMIT 2046 /* maximum supported by hardware */
+
+/* These identify the driver base version and may not be removed. */
+static const char version[] __devinitconst =
+ KERN_INFO DRV_NAME " dp8381x driver, version "
+ DRV_VERSION ", " DRV_RELDATE "\n"
+ " originally by Donald Becker <becker@scyld.com>\n"
+ " 2.4.x kernel port by Jeff Garzik, Tjeerd Mulder\n";
+
+MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
+MODULE_DESCRIPTION("National Semiconductor DP8381x series PCI Ethernet driver");
+MODULE_LICENSE("GPL");
+
+module_param(mtu, int, 0);
+module_param(debug, int, 0);
+module_param(rx_copybreak, int, 0);
+module_param(dspcfg_workaround, int, 0);
+module_param_array(options, int, NULL, 0);
+module_param_array(full_duplex, int, NULL, 0);
+MODULE_PARM_DESC(mtu, "DP8381x MTU (all boards)");
+MODULE_PARM_DESC(debug, "DP8381x default debug level");
+MODULE_PARM_DESC(rx_copybreak,
+ "DP8381x copy breakpoint for copy-only-tiny-frames");
+MODULE_PARM_DESC(dspcfg_workaround, "DP8381x: control DspCfg workaround");
+MODULE_PARM_DESC(options,
+ "DP8381x: Bits 0-3: media type, bit 17: full duplex");
+MODULE_PARM_DESC(full_duplex, "DP8381x full duplex setting(s) (1)");
+
+/*
+ Theory of Operation
+
+I. Board Compatibility
+
+This driver is designed for National Semiconductor DP83815 PCI Ethernet NIC.
+It also works with other chips in in the DP83810 series.
+
+II. Board-specific settings
+
+This driver requires the PCI interrupt line to be valid.
+It honors the EEPROM-set values.
+
+III. Driver operation
+
+IIIa. Ring buffers
+
+This driver uses two statically allocated fixed-size descriptor lists
+formed into rings by a branch from the final descriptor to the beginning of
+the list. The ring sizes are set at compile time by RX/TX_RING_SIZE.
+The NatSemi design uses a 'next descriptor' pointer that the driver forms
+into a list.
+
+IIIb/c. Transmit/Receive Structure
+
+This driver uses a zero-copy receive and transmit scheme.
+The driver allocates full frame size skbuffs for the Rx ring buffers at
+open() time and passes the skb->data field to the chip as receive data
+buffers. When an incoming frame is less than RX_COPYBREAK bytes long,
+a fresh skbuff is allocated and the frame is copied to the new skbuff.
+When the incoming frame is larger, the skbuff is passed directly up the
+protocol stack. Buffers consumed this way are replaced by newly allocated
+skbuffs in a later phase of receives.
+
+The RX_COPYBREAK value is chosen to trade-off the memory wasted by
+using a full-sized skbuff for small frames vs. the copying costs of larger
+frames. New boards are typically used in generously configured machines
+and the underfilled buffers have negligible impact compared to the benefit of
+a single allocation size, so the default value of zero results in never
+copying packets. When copying is done, the cost is usually mitigated by using
+a combined copy/checksum routine. Copying also preloads the cache, which is
+most useful with small frames.
+
+A subtle aspect of the operation is that unaligned buffers are not permitted
+by the hardware. Thus the IP header at offset 14 in an ethernet frame isn't
+longword aligned for further processing. On copies frames are put into the
+skbuff at an offset of "+2", 16-byte aligning the IP header.
+
+IIId. Synchronization
+
+Most operations are synchronized on the np->lock irq spinlock, except the
+receive and transmit paths which are synchronised using a combination of
+hardware descriptor ownership, disabling interrupts and NAPI poll scheduling.
+
+IVb. References
+
+http://www.scyld.com/expert/100mbps.html
+http://www.scyld.com/expert/NWay.html
+Datasheet is available from:
+http://www.national.com/pf/DP/DP83815.html
+
+IVc. Errata
+
+None characterised.
+*/
+
+
+
+/*
+ * Support for fibre connections on Am79C874:
+ * This phy needs a special setup when connected to a fibre cable.
+ * http://www.amd.com/files/connectivitysolutions/networking/archivednetworking/22235.pdf
+ */
+#define PHYID_AM79C874 0x0022561b
+
+enum {
+ MII_MCTRL = 0x15, /* mode control register */
+ MII_FX_SEL = 0x0001, /* 100BASE-FX (fiber) */
+ MII_EN_SCRM = 0x0004, /* enable scrambler (tp) */
+};
+
+enum {
+ NATSEMI_FLAG_IGNORE_PHY = 0x1,
+};
+
+/* array of board data directly indexed by pci_tbl[x].driver_data */
+static struct {
+ const char *name;
+ unsigned long flags;
+ unsigned int eeprom_size;
+} natsemi_pci_info[] __devinitdata = {
+ { "Aculab E1/T1 PMXc cPCI carrier card", NATSEMI_FLAG_IGNORE_PHY, 128 },
+ { "NatSemi DP8381[56]", 0, 24 },
+};
+
+static DEFINE_PCI_DEVICE_TABLE(natsemi_pci_tbl) = {
+ { PCI_VENDOR_ID_NS, 0x0020, 0x12d9, 0x000c, 0, 0, 0 },
+ { PCI_VENDOR_ID_NS, 0x0020, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
+ { } /* terminate list */
+};
+MODULE_DEVICE_TABLE(pci, natsemi_pci_tbl);
+
+/* Offsets to the device registers.
+ Unlike software-only systems, device drivers interact with complex hardware.
+ It's not useful to define symbolic names for every register bit in the
+ device.
+*/
+enum register_offsets {
+ ChipCmd = 0x00,
+ ChipConfig = 0x04,
+ EECtrl = 0x08,
+ PCIBusCfg = 0x0C,
+ IntrStatus = 0x10,
+ IntrMask = 0x14,
+ IntrEnable = 0x18,
+ IntrHoldoff = 0x1C, /* DP83816 only */
+ TxRingPtr = 0x20,
+ TxConfig = 0x24,
+ RxRingPtr = 0x30,
+ RxConfig = 0x34,
+ ClkRun = 0x3C,
+ WOLCmd = 0x40,
+ PauseCmd = 0x44,
+ RxFilterAddr = 0x48,
+ RxFilterData = 0x4C,
+ BootRomAddr = 0x50,
+ BootRomData = 0x54,
+ SiliconRev = 0x58,
+ StatsCtrl = 0x5C,
+ StatsData = 0x60,
+ RxPktErrs = 0x60,
+ RxMissed = 0x68,
+ RxCRCErrs = 0x64,
+ BasicControl = 0x80,
+ BasicStatus = 0x84,
+ AnegAdv = 0x90,
+ AnegPeer = 0x94,
+ PhyStatus = 0xC0,
+ MIntrCtrl = 0xC4,
+ MIntrStatus = 0xC8,
+ PhyCtrl = 0xE4,
+
+ /* These are from the spec, around page 78... on a separate table.
+ * The meaning of these registers depend on the value of PGSEL. */
+ PGSEL = 0xCC,
+ PMDCSR = 0xE4,
+ TSTDAT = 0xFC,
+ DSPCFG = 0xF4,
+ SDCFG = 0xF8
+};
+/* the values for the 'magic' registers above (PGSEL=1) */
+#define PMDCSR_VAL 0x189c /* enable preferred adaptation circuitry */
+#define TSTDAT_VAL 0x0
+#define DSPCFG_VAL 0x5040
+#define SDCFG_VAL 0x008c /* set voltage thresholds for Signal Detect */
+#define DSPCFG_LOCK 0x20 /* coefficient lock bit in DSPCFG */
+#define DSPCFG_COEF 0x1000 /* see coefficient (in TSTDAT) bit in DSPCFG */
+#define TSTDAT_FIXED 0xe8 /* magic number for bad coefficients */
+
+/* misc PCI space registers */
+enum pci_register_offsets {
+ PCIPM = 0x44,
+};
+
+enum ChipCmd_bits {
+ ChipReset = 0x100,
+ RxReset = 0x20,
+ TxReset = 0x10,
+ RxOff = 0x08,
+ RxOn = 0x04,
+ TxOff = 0x02,
+ TxOn = 0x01,
+};
+
+enum ChipConfig_bits {
+ CfgPhyDis = 0x200,
+ CfgPhyRst = 0x400,
+ CfgExtPhy = 0x1000,
+ CfgAnegEnable = 0x2000,
+ CfgAneg100 = 0x4000,
+ CfgAnegFull = 0x8000,
+ CfgAnegDone = 0x8000000,
+ CfgFullDuplex = 0x20000000,
+ CfgSpeed100 = 0x40000000,
+ CfgLink = 0x80000000,
+};
+
+enum EECtrl_bits {
+ EE_ShiftClk = 0x04,
+ EE_DataIn = 0x01,
+ EE_ChipSelect = 0x08,
+ EE_DataOut = 0x02,
+ MII_Data = 0x10,
+ MII_Write = 0x20,
+ MII_ShiftClk = 0x40,
+};
+
+enum PCIBusCfg_bits {
+ EepromReload = 0x4,
+};
+
+/* Bits in the interrupt status/mask registers. */
+enum IntrStatus_bits {
+ IntrRxDone = 0x0001,
+ IntrRxIntr = 0x0002,
+ IntrRxErr = 0x0004,
+ IntrRxEarly = 0x0008,
+ IntrRxIdle = 0x0010,
+ IntrRxOverrun = 0x0020,
+ IntrTxDone = 0x0040,
+ IntrTxIntr = 0x0080,
+ IntrTxErr = 0x0100,
+ IntrTxIdle = 0x0200,
+ IntrTxUnderrun = 0x0400,
+ StatsMax = 0x0800,
+ SWInt = 0x1000,
+ WOLPkt = 0x2000,
+ LinkChange = 0x4000,
+ IntrHighBits = 0x8000,
+ RxStatusFIFOOver = 0x10000,
+ IntrPCIErr = 0xf00000,
+ RxResetDone = 0x1000000,
+ TxResetDone = 0x2000000,
+ IntrAbnormalSummary = 0xCD20,
+};
+
+/*
+ * Default Interrupts:
+ * Rx OK, Rx Packet Error, Rx Overrun,
+ * Tx OK, Tx Packet Error, Tx Underrun,
+ * MIB Service, Phy Interrupt, High Bits,
+ * Rx Status FIFO overrun,
+ * Received Target Abort, Received Master Abort,
+ * Signalled System Error, Received Parity Error
+ */
+#define DEFAULT_INTR 0x00f1cd65
+
+enum TxConfig_bits {
+ TxDrthMask = 0x3f,
+ TxFlthMask = 0x3f00,
+ TxMxdmaMask = 0x700000,
+ TxMxdma_512 = 0x0,
+ TxMxdma_4 = 0x100000,
+ TxMxdma_8 = 0x200000,
+ TxMxdma_16 = 0x300000,
+ TxMxdma_32 = 0x400000,
+ TxMxdma_64 = 0x500000,
+ TxMxdma_128 = 0x600000,
+ TxMxdma_256 = 0x700000,
+ TxCollRetry = 0x800000,
+ TxAutoPad = 0x10000000,
+ TxMacLoop = 0x20000000,
+ TxHeartIgn = 0x40000000,
+ TxCarrierIgn = 0x80000000
+};
+
+/*
+ * Tx Configuration:
+ * - 256 byte DMA burst length
+ * - fill threshold 512 bytes (i.e. restart DMA when 512 bytes are free)
+ * - 64 bytes initial drain threshold (i.e. begin actual transmission
+ * when 64 byte are in the fifo)
+ * - on tx underruns, increase drain threshold by 64.
+ * - at most use a drain threshold of 1472 bytes: The sum of the fill
+ * threshold and the drain threshold must be less than 2016 bytes.
+ *
+ */
+#define TX_FLTH_VAL ((512/32) << 8)
+#define TX_DRTH_VAL_START (64/32)
+#define TX_DRTH_VAL_INC 2
+#define TX_DRTH_VAL_LIMIT (1472/32)
+
+enum RxConfig_bits {
+ RxDrthMask = 0x3e,
+ RxMxdmaMask = 0x700000,
+ RxMxdma_512 = 0x0,
+ RxMxdma_4 = 0x100000,
+ RxMxdma_8 = 0x200000,
+ RxMxdma_16 = 0x300000,
+ RxMxdma_32 = 0x400000,
+ RxMxdma_64 = 0x500000,
+ RxMxdma_128 = 0x600000,
+ RxMxdma_256 = 0x700000,
+ RxAcceptLong = 0x8000000,
+ RxAcceptTx = 0x10000000,
+ RxAcceptRunt = 0x40000000,
+ RxAcceptErr = 0x80000000
+};
+#define RX_DRTH_VAL (128/8)
+
+enum ClkRun_bits {
+ PMEEnable = 0x100,
+ PMEStatus = 0x8000,
+};
+
+enum WolCmd_bits {
+ WakePhy = 0x1,
+ WakeUnicast = 0x2,
+ WakeMulticast = 0x4,
+ WakeBroadcast = 0x8,
+ WakeArp = 0x10,
+ WakePMatch0 = 0x20,
+ WakePMatch1 = 0x40,
+ WakePMatch2 = 0x80,
+ WakePMatch3 = 0x100,
+ WakeMagic = 0x200,
+ WakeMagicSecure = 0x400,
+ SecureHack = 0x100000,
+ WokePhy = 0x400000,
+ WokeUnicast = 0x800000,
+ WokeMulticast = 0x1000000,
+ WokeBroadcast = 0x2000000,
+ WokeArp = 0x4000000,
+ WokePMatch0 = 0x8000000,
+ WokePMatch1 = 0x10000000,
+ WokePMatch2 = 0x20000000,
+ WokePMatch3 = 0x40000000,
+ WokeMagic = 0x80000000,
+ WakeOptsSummary = 0x7ff
+};
+
+enum RxFilterAddr_bits {
+ RFCRAddressMask = 0x3ff,
+ AcceptMulticast = 0x00200000,
+ AcceptMyPhys = 0x08000000,
+ AcceptAllPhys = 0x10000000,
+ AcceptAllMulticast = 0x20000000,
+ AcceptBroadcast = 0x40000000,
+ RxFilterEnable = 0x80000000
+};
+
+enum StatsCtrl_bits {
+ StatsWarn = 0x1,
+ StatsFreeze = 0x2,
+ StatsClear = 0x4,
+ StatsStrobe = 0x8,
+};
+
+enum MIntrCtrl_bits {
+ MICRIntEn = 0x2,
+};
+
+enum PhyCtrl_bits {
+ PhyAddrMask = 0x1f,
+};
+
+#define PHY_ADDR_NONE 32
+#define PHY_ADDR_INTERNAL 1
+
+/* values we might find in the silicon revision register */
+#define SRR_DP83815_C 0x0302
+#define SRR_DP83815_D 0x0403
+#define SRR_DP83816_A4 0x0504
+#define SRR_DP83816_A5 0x0505
+
+/* The Rx and Tx buffer descriptors. */
+/* Note that using only 32 bit fields simplifies conversion to big-endian
+ architectures. */
+struct netdev_desc {
+ __le32 next_desc;
+ __le32 cmd_status;
+ __le32 addr;
+ __le32 software_use;
+};
+
+/* Bits in network_desc.status */
+enum desc_status_bits {
+ DescOwn=0x80000000, DescMore=0x40000000, DescIntr=0x20000000,
+ DescNoCRC=0x10000000, DescPktOK=0x08000000,
+ DescSizeMask=0xfff,
+
+ DescTxAbort=0x04000000, DescTxFIFO=0x02000000,
+ DescTxCarrier=0x01000000, DescTxDefer=0x00800000,
+ DescTxExcDefer=0x00400000, DescTxOOWCol=0x00200000,
+ DescTxExcColl=0x00100000, DescTxCollCount=0x000f0000,
+
+ DescRxAbort=0x04000000, DescRxOver=0x02000000,
+ DescRxDest=0x01800000, DescRxLong=0x00400000,
+ DescRxRunt=0x00200000, DescRxInvalid=0x00100000,
+ DescRxCRC=0x00080000, DescRxAlign=0x00040000,
+ DescRxLoop=0x00020000, DesRxColl=0x00010000,
+};
+
+struct netdev_private {
+ /* Descriptor rings first for alignment */
+ dma_addr_t ring_dma;
+ struct netdev_desc *rx_ring;
+ struct netdev_desc *tx_ring;
+ /* The addresses of receive-in-place skbuffs */
+ struct sk_buff *rx_skbuff[RX_RING_SIZE];
+ dma_addr_t rx_dma[RX_RING_SIZE];
+ /* address of a sent-in-place packet/buffer, for later free() */
+ struct sk_buff *tx_skbuff[TX_RING_SIZE];
+ dma_addr_t tx_dma[TX_RING_SIZE];
+ struct net_device *dev;
+ struct napi_struct napi;
+ /* Media monitoring timer */
+ struct timer_list timer;
+ /* Frequently used values: keep some adjacent for cache effect */
+ struct pci_dev *pci_dev;
+ struct netdev_desc *rx_head_desc;
+ /* Producer/consumer ring indices */
+ unsigned int cur_rx, dirty_rx;
+ unsigned int cur_tx, dirty_tx;
+ /* Based on MTU+slack. */
+ unsigned int rx_buf_sz;
+ int oom;
+ /* Interrupt status */
+ u32 intr_status;
+ /* Do not touch the nic registers */
+ int hands_off;
+ /* Don't pay attention to the reported link state. */
+ int ignore_phy;
+ /* external phy that is used: only valid if dev->if_port != PORT_TP */
+ int mii;
+ int phy_addr_external;
+ unsigned int full_duplex;
+ /* Rx filter */
+ u32 cur_rx_mode;
+ u32 rx_filter[16];
+ /* FIFO and PCI burst thresholds */
+ u32 tx_config, rx_config;
+ /* original contents of ClkRun register */
+ u32 SavedClkRun;
+ /* silicon revision */
+ u32 srr;
+ /* expected DSPCFG value */
+ u16 dspcfg;
+ int dspcfg_workaround;
+ /* parms saved in ethtool format */
+ u16 speed; /* The forced speed, 10Mb, 100Mb, gigabit */
+ u8 duplex; /* Duplex, half or full */
+ u8 autoneg; /* Autonegotiation enabled */
+ /* MII transceiver section */
+ u16 advertising;
+ unsigned int iosize;
+ spinlock_t lock;
+ u32 msg_enable;
+ /* EEPROM data */
+ int eeprom_size;
+};
+
+static void move_int_phy(struct net_device *dev, int addr);
+static int eeprom_read(void __iomem *ioaddr, int location);
+static int mdio_read(struct net_device *dev, int reg);
+static void mdio_write(struct net_device *dev, int reg, u16 data);
+static void init_phy_fixup(struct net_device *dev);
+static int miiport_read(struct net_device *dev, int phy_id, int reg);
+static void miiport_write(struct net_device *dev, int phy_id, int reg, u16 data);
+static int find_mii(struct net_device *dev);
+static void natsemi_reset(struct net_device *dev);
+static void natsemi_reload_eeprom(struct net_device *dev);
+static void natsemi_stop_rxtx(struct net_device *dev);
+static int netdev_open(struct net_device *dev);
+static void do_cable_magic(struct net_device *dev);
+static void undo_cable_magic(struct net_device *dev);
+static void check_link(struct net_device *dev);
+static void netdev_timer(unsigned long data);
+static void dump_ring(struct net_device *dev);
+static void ns_tx_timeout(struct net_device *dev);
+static int alloc_ring(struct net_device *dev);
+static void refill_rx(struct net_device *dev);
+static void init_ring(struct net_device *dev);
+static void drain_tx(struct net_device *dev);
+static void drain_ring(struct net_device *dev);
+static void free_ring(struct net_device *dev);
+static void reinit_ring(struct net_device *dev);
+static void init_registers(struct net_device *dev);
+static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t intr_handler(int irq, void *dev_instance);
+static void netdev_error(struct net_device *dev, int intr_status);
+static int natsemi_poll(struct napi_struct *napi, int budget);
+static void netdev_rx(struct net_device *dev, int *work_done, int work_to_do);
+static void netdev_tx_done(struct net_device *dev);
+static int natsemi_change_mtu(struct net_device *dev, int new_mtu);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void natsemi_poll_controller(struct net_device *dev);
+#endif
+static void __set_rx_mode(struct net_device *dev);
+static void set_rx_mode(struct net_device *dev);
+static void __get_stats(struct net_device *dev);
+static struct net_device_stats *get_stats(struct net_device *dev);
+static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static int netdev_set_wol(struct net_device *dev, u32 newval);
+static int netdev_get_wol(struct net_device *dev, u32 *supported, u32 *cur);
+static int netdev_set_sopass(struct net_device *dev, u8 *newval);
+static int netdev_get_sopass(struct net_device *dev, u8 *data);
+static int netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd);
+static int netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd);
+static void enable_wol_mode(struct net_device *dev, int enable_intr);
+static int netdev_close(struct net_device *dev);
+static int netdev_get_regs(struct net_device *dev, u8 *buf);
+static int netdev_get_eeprom(struct net_device *dev, u8 *buf);
+static const struct ethtool_ops ethtool_ops;
+
+#define NATSEMI_ATTR(_name) \
+static ssize_t natsemi_show_##_name(struct device *dev, \
+ struct device_attribute *attr, char *buf); \
+ static ssize_t natsemi_set_##_name(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count); \
+ static DEVICE_ATTR(_name, 0644, natsemi_show_##_name, natsemi_set_##_name)
+
+#define NATSEMI_CREATE_FILE(_dev, _name) \
+ device_create_file(&_dev->dev, &dev_attr_##_name)
+#define NATSEMI_REMOVE_FILE(_dev, _name) \
+ device_remove_file(&_dev->dev, &dev_attr_##_name)
+
+NATSEMI_ATTR(dspcfg_workaround);
+
+static ssize_t natsemi_show_dspcfg_workaround(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct netdev_private *np = netdev_priv(to_net_dev(dev));
+
+ return sprintf(buf, "%s\n", np->dspcfg_workaround ? "on" : "off");
+}
+
+static ssize_t natsemi_set_dspcfg_workaround(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct netdev_private *np = netdev_priv(to_net_dev(dev));
+ int new_setting;
+ unsigned long flags;
+
+ /* Find out the new setting */
+ if (!strncmp("on", buf, count - 1) || !strncmp("1", buf, count - 1))
+ new_setting = 1;
+ else if (!strncmp("off", buf, count - 1) ||
+ !strncmp("0", buf, count - 1))
+ new_setting = 0;
+ else
+ return count;
+
+ spin_lock_irqsave(&np->lock, flags);
+
+ np->dspcfg_workaround = new_setting;
+
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ return count;
+}
+
+static inline void __iomem *ns_ioaddr(struct net_device *dev)
+{
+ return (void __iomem *) dev->base_addr;
+}
+
+static inline void natsemi_irq_enable(struct net_device *dev)
+{
+ writel(1, ns_ioaddr(dev) + IntrEnable);
+ readl(ns_ioaddr(dev) + IntrEnable);
+}
+
+static inline void natsemi_irq_disable(struct net_device *dev)
+{
+ writel(0, ns_ioaddr(dev) + IntrEnable);
+ readl(ns_ioaddr(dev) + IntrEnable);
+}
+
+static void move_int_phy(struct net_device *dev, int addr)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem *ioaddr = ns_ioaddr(dev);
+ int target = 31;
+
+ /*
+ * The internal phy is visible on the external mii bus. Therefore we must
+ * move it away before we can send commands to an external phy.
+ * There are two addresses we must avoid:
+ * - the address on the external phy that is used for transmission.
+ * - the address that we want to access. User space can access phys
+ * on the mii bus with SIOCGMIIREG/SIOCSMIIREG, independent from the
+ * phy that is used for transmission.
+ */
+
+ if (target == addr)
+ target--;
+ if (target == np->phy_addr_external)
+ target--;
+ writew(target, ioaddr + PhyCtrl);
+ readw(ioaddr + PhyCtrl);
+ udelay(1);
+}
+
+static void __devinit natsemi_init_media (struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ u32 tmp;
+
+ if (np->ignore_phy)
+ netif_carrier_on(dev);
+ else
+ netif_carrier_off(dev);
+
+ /* get the initial settings from hardware */
+ tmp = mdio_read(dev, MII_BMCR);
+ np->speed = (tmp & BMCR_SPEED100)? SPEED_100 : SPEED_10;
+ np->duplex = (tmp & BMCR_FULLDPLX)? DUPLEX_FULL : DUPLEX_HALF;
+ np->autoneg = (tmp & BMCR_ANENABLE)? AUTONEG_ENABLE: AUTONEG_DISABLE;
+ np->advertising= mdio_read(dev, MII_ADVERTISE);
+
+ if ((np->advertising & ADVERTISE_ALL) != ADVERTISE_ALL &&
+ netif_msg_probe(np)) {
+ printk(KERN_INFO "natsemi %s: Transceiver default autonegotiation %s "
+ "10%s %s duplex.\n",
+ pci_name(np->pci_dev),
+ (mdio_read(dev, MII_BMCR) & BMCR_ANENABLE)?
+ "enabled, advertise" : "disabled, force",
+ (np->advertising &
+ (ADVERTISE_100FULL|ADVERTISE_100HALF))?
+ "0" : "",
+ (np->advertising &
+ (ADVERTISE_100FULL|ADVERTISE_10FULL))?
+ "full" : "half");
+ }
+ if (netif_msg_probe(np))
+ printk(KERN_INFO
+ "natsemi %s: Transceiver status %#04x advertising %#04x.\n",
+ pci_name(np->pci_dev), mdio_read(dev, MII_BMSR),
+ np->advertising);
+
+}
+
+static const struct net_device_ops natsemi_netdev_ops = {
+ .ndo_open = netdev_open,
+ .ndo_stop = netdev_close,
+ .ndo_start_xmit = start_tx,
+ .ndo_get_stats = get_stats,
+ .ndo_set_multicast_list = set_rx_mode,
+ .ndo_change_mtu = natsemi_change_mtu,
+ .ndo_do_ioctl = netdev_ioctl,
+ .ndo_tx_timeout = ns_tx_timeout,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = natsemi_poll_controller,
+#endif
+};
+
+static int __devinit natsemi_probe1 (struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct net_device *dev;
+ struct netdev_private *np;
+ int i, option, irq, chip_idx = ent->driver_data;
+ static int find_cnt = -1;
+ resource_size_t iostart;
+ unsigned long iosize;
+ void __iomem *ioaddr;
+ const int pcibar = 1; /* PCI base address register */
+ int prev_eedata;
+ u32 tmp;
+
+/* when built into the kernel, we only print version if device is found */
+#ifndef MODULE
+ static int printed_version;
+ if (!printed_version++)
+ printk(version);
+#endif
+
+ i = pci_enable_device(pdev);
+ if (i) return i;
+
+ /* natsemi has a non-standard PM control register
+ * in PCI config space. Some boards apparently need
+ * to be brought to D0 in this manner.
+ */
+ pci_read_config_dword(pdev, PCIPM, &tmp);
+ if (tmp & PCI_PM_CTRL_STATE_MASK) {
+ /* D0 state, disable PME assertion */
+ u32 newtmp = tmp & ~PCI_PM_CTRL_STATE_MASK;
+ pci_write_config_dword(pdev, PCIPM, newtmp);
+ }
+
+ find_cnt++;
+ iostart = pci_resource_start(pdev, pcibar);
+ iosize = pci_resource_len(pdev, pcibar);
+ irq = pdev->irq;
+
+ pci_set_master(pdev);
+
+ dev = alloc_etherdev(sizeof (struct netdev_private));
+ if (!dev)
+ return -ENOMEM;
+ SET_NETDEV_DEV(dev, &pdev->dev);
+
+ i = pci_request_regions(pdev, DRV_NAME);
+ if (i)
+ goto err_pci_request_regions;
+
+ ioaddr = ioremap(iostart, iosize);
+ if (!ioaddr) {
+ i = -ENOMEM;
+ goto err_ioremap;
+ }
+
+ /* Work around the dropped serial bit. */
+ prev_eedata = eeprom_read(ioaddr, 6);
+ for (i = 0; i < 3; i++) {
+ int eedata = eeprom_read(ioaddr, i + 7);
+ dev->dev_addr[i*2] = (eedata << 1) + (prev_eedata >> 15);
+ dev->dev_addr[i*2+1] = eedata >> 7;
+ prev_eedata = eedata;
+ }
+
+ /* Store MAC Address in perm_addr */
+ memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN);
+
+ dev->base_addr = (unsigned long __force) ioaddr;
+ dev->irq = irq;
+
+ np = netdev_priv(dev);
+ netif_napi_add(dev, &np->napi, natsemi_poll, 64);
+ np->dev = dev;
+
+ np->pci_dev = pdev;
+ pci_set_drvdata(pdev, dev);
+ np->iosize = iosize;
+ spin_lock_init(&np->lock);
+ np->msg_enable = (debug >= 0) ? (1<<debug)-1 : NATSEMI_DEF_MSG;
+ np->hands_off = 0;
+ np->intr_status = 0;
+ np->eeprom_size = natsemi_pci_info[chip_idx].eeprom_size;
+ if (natsemi_pci_info[chip_idx].flags & NATSEMI_FLAG_IGNORE_PHY)
+ np->ignore_phy = 1;
+ else
+ np->ignore_phy = 0;
+ np->dspcfg_workaround = dspcfg_workaround;
+
+ /* Initial port:
+ * - If configured to ignore the PHY set up for external.
+ * - If the nic was configured to use an external phy and if find_mii
+ * finds a phy: use external port, first phy that replies.
+ * - Otherwise: internal port.
+ * Note that the phy address for the internal phy doesn't matter:
+ * The address would be used to access a phy over the mii bus, but
+ * the internal phy is accessed through mapped registers.
+ */
+ if (np->ignore_phy || readl(ioaddr + ChipConfig) & CfgExtPhy)
+ dev->if_port = PORT_MII;
+ else
+ dev->if_port = PORT_TP;
+ /* Reset the chip to erase previous misconfiguration. */
+ natsemi_reload_eeprom(dev);
+ natsemi_reset(dev);
+
+ if (dev->if_port != PORT_TP) {
+ np->phy_addr_external = find_mii(dev);
+ /* If we're ignoring the PHY it doesn't matter if we can't
+ * find one. */
+ if (!np->ignore_phy && np->phy_addr_external == PHY_ADDR_NONE) {
+ dev->if_port = PORT_TP;
+ np->phy_addr_external = PHY_ADDR_INTERNAL;
+ }
+ } else {
+ np->phy_addr_external = PHY_ADDR_INTERNAL;
+ }
+
+ option = find_cnt < MAX_UNITS ? options[find_cnt] : 0;
+ if (dev->mem_start)
+ option = dev->mem_start;
+
+ /* The lower four bits are the media type. */
+ if (option) {
+ if (option & 0x200)
+ np->full_duplex = 1;
+ if (option & 15)
+ printk(KERN_INFO
+ "natsemi %s: ignoring user supplied media type %d",
+ pci_name(np->pci_dev), option & 15);
+ }
+ if (find_cnt < MAX_UNITS && full_duplex[find_cnt])
+ np->full_duplex = 1;
+
+ dev->netdev_ops = &natsemi_netdev_ops;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ SET_ETHTOOL_OPS(dev, ðtool_ops);
+
+ if (mtu)
+ dev->mtu = mtu;
+
+ natsemi_init_media(dev);
+
+ /* save the silicon revision for later querying */
+ np->srr = readl(ioaddr + SiliconRev);
+ if (netif_msg_hw(np))
+ printk(KERN_INFO "natsemi %s: silicon revision %#04x.\n",
+ pci_name(np->pci_dev), np->srr);
+
+ i = register_netdev(dev);
+ if (i)
+ goto err_register_netdev;
+
+ if (NATSEMI_CREATE_FILE(pdev, dspcfg_workaround))
+ goto err_create_file;
+
+ if (netif_msg_drv(np)) {
+ printk(KERN_INFO "natsemi %s: %s at %#08llx "
+ "(%s), %pM, IRQ %d",
+ dev->name, natsemi_pci_info[chip_idx].name,
+ (unsigned long long)iostart, pci_name(np->pci_dev),
+ dev->dev_addr, irq);
+ if (dev->if_port == PORT_TP)
+ printk(", port TP.\n");
+ else if (np->ignore_phy)
+ printk(", port MII, ignoring PHY\n");
+ else
+ printk(", port MII, phy ad %d.\n", np->phy_addr_external);
+ }
+ return 0;
+
+ err_create_file:
+ unregister_netdev(dev);
+
+ err_register_netdev:
+ iounmap(ioaddr);
+
+ err_ioremap:
+ pci_release_regions(pdev);
+ pci_set_drvdata(pdev, NULL);
+
+ err_pci_request_regions:
+ free_netdev(dev);
+ return i;
+}
+
+
+/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces.
+ The EEPROM code is for the common 93c06/46 EEPROMs with 6 bit addresses. */
+
+/* Delay between EEPROM clock transitions.
+ No extra delay is needed with 33Mhz PCI, but future 66Mhz access may need
+ a delay. Note that pre-2.0.34 kernels had a cache-alignment bug that
+ made udelay() unreliable.
+ The old method of using an ISA access as a delay, __SLOW_DOWN_IO__, is
+ deprecated.
+*/
+#define eeprom_delay(ee_addr) readl(ee_addr)
+
+#define EE_Write0 (EE_ChipSelect)
+#define EE_Write1 (EE_ChipSelect | EE_DataIn)
+
+/* The EEPROM commands include the alway-set leading bit. */
+enum EEPROM_Cmds {
+ EE_WriteCmd=(5 << 6), EE_ReadCmd=(6 << 6), EE_EraseCmd=(7 << 6),
+};
+
+static int eeprom_read(void __iomem *addr, int location)
+{
+ int i;
+ int retval = 0;
+ void __iomem *ee_addr = addr + EECtrl;
+ int read_cmd = location | EE_ReadCmd;
+
+ writel(EE_Write0, ee_addr);
+
+ /* Shift the read command bits out. */
+ for (i = 10; i >= 0; i--) {
+ short dataval = (read_cmd & (1 << i)) ? EE_Write1 : EE_Write0;
+ writel(dataval, ee_addr);
+ eeprom_delay(ee_addr);
+ writel(dataval | EE_ShiftClk, ee_addr);
+ eeprom_delay(ee_addr);
+ }
+ writel(EE_ChipSelect, ee_addr);
+ eeprom_delay(ee_addr);
+
+ for (i = 0; i < 16; i++) {
+ writel(EE_ChipSelect | EE_ShiftClk, ee_addr);
+ eeprom_delay(ee_addr);
+ retval |= (readl(ee_addr) & EE_DataOut) ? 1 << i : 0;
+ writel(EE_ChipSelect, ee_addr);
+ eeprom_delay(ee_addr);
+ }
+
+ /* Terminate the EEPROM access. */
+ writel(EE_Write0, ee_addr);
+ writel(0, ee_addr);
+ return retval;
+}
+
+/* MII transceiver control section.
+ * The 83815 series has an internal transceiver, and we present the
+ * internal management registers as if they were MII connected.
+ * External Phy registers are referenced through the MII interface.
+ */
+
+/* clock transitions >= 20ns (25MHz)
+ * One readl should be good to PCI @ 100MHz
+ */
+#define mii_delay(ioaddr) readl(ioaddr + EECtrl)
+
+static int mii_getbit (struct net_device *dev)
+{
+ int data;
+ void __iomem *ioaddr = ns_ioaddr(dev);
+
+ writel(MII_ShiftClk, ioaddr + EECtrl);
+ data = readl(ioaddr + EECtrl);
+ writel(0, ioaddr + EECtrl);
+ mii_delay(ioaddr);
+ return (data & MII_Data)? 1 : 0;
+}
+
+static void mii_send_bits (struct net_device *dev, u32 data, int len)
+{
+ u32 i;
+ void __iomem *ioaddr = ns_ioaddr(dev);
+
+ for (i = (1 << (len-1)); i; i >>= 1)
+ {
+ u32 mdio_val = MII_Write | ((data & i)? MII_Data : 0);
+ writel(mdio_val, ioaddr + EECtrl);
+ mii_delay(ioaddr);
+ writel(mdio_val | MII_ShiftClk, ioaddr + EECtrl);
+ mii_delay(ioaddr);
+ }
+ writel(0, ioaddr + EECtrl);
+ mii_delay(ioaddr);
+}
+
+static int miiport_read(struct net_device *dev, int phy_id, int reg)
+{
+ u32 cmd;
+ int i;
+ u32 retval = 0;
+
+ /* Ensure sync */
+ mii_send_bits (dev, 0xffffffff, 32);
+ /* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */
+ /* ST,OP = 0110'b for read operation */
+ cmd = (0x06 << 10) | (phy_id << 5) | reg;
+ mii_send_bits (dev, cmd, 14);
+ /* Turnaround */
+ if (mii_getbit (dev))
+ return 0;
+ /* Read data */
+ for (i = 0; i < 16; i++) {
+ retval <<= 1;
+ retval |= mii_getbit (dev);
+ }
+ /* End cycle */
+ mii_getbit (dev);
+ return retval;
+}
+
+static void miiport_write(struct net_device *dev, int phy_id, int reg, u16 data)
+{
+ u32 cmd;
+
+ /* Ensure sync */
+ mii_send_bits (dev, 0xffffffff, 32);
+ /* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */
+ /* ST,OP,AAAAA,RRRRR,TA = 0101xxxxxxxxxx10'b = 0x5002 for write */
+ cmd = (0x5002 << 16) | (phy_id << 23) | (reg << 18) | data;
+ mii_send_bits (dev, cmd, 32);
+ /* End cycle */
+ mii_getbit (dev);
+}
+
+static int mdio_read(struct net_device *dev, int reg)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem *ioaddr = ns_ioaddr(dev);
+
+ /* The 83815 series has two ports:
+ * - an internal transceiver
+ * - an external mii bus
+ */
+ if (dev->if_port == PORT_TP)
+ return readw(ioaddr+BasicControl+(reg<<2));
+ else
+ return miiport_read(dev, np->phy_addr_external, reg);
+}
+
+static void mdio_write(struct net_device *dev, int reg, u16 data)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem *ioaddr = ns_ioaddr(dev);
+
+ /* The 83815 series has an internal transceiver; handle separately */
+ if (dev->if_port == PORT_TP)
+ writew(data, ioaddr+BasicControl+(reg<<2));
+ else
+ miiport_write(dev, np->phy_addr_external, reg, data);
+}
+
+static void init_phy_fixup(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem *ioaddr = ns_ioaddr(dev);
+ int i;
+ u32 cfg;
+ u16 tmp;
+
+ /* restore stuff lost when power was out */
+ tmp = mdio_read(dev, MII_BMCR);
+ if (np->autoneg == AUTONEG_ENABLE) {
+ /* renegotiate if something changed */
+ if ((tmp & BMCR_ANENABLE) == 0 ||
+ np->advertising != mdio_read(dev, MII_ADVERTISE))
+ {
+ /* turn on autonegotiation and force negotiation */
+ tmp |= (BMCR_ANENABLE | BMCR_ANRESTART);
+ mdio_write(dev, MII_ADVERTISE, np->advertising);
+ }
+ } else {
+ /* turn off auto negotiation, set speed and duplexity */
+ tmp &= ~(BMCR_ANENABLE | BMCR_SPEED100 | BMCR_FULLDPLX);
+ if (np->speed == SPEED_100)
+ tmp |= BMCR_SPEED100;
+ if (np->duplex == DUPLEX_FULL)
+ tmp |= BMCR_FULLDPLX;
+ /*
+ * Note: there is no good way to inform the link partner
+ * that our capabilities changed. The user has to unplug
+ * and replug the network cable after some changes, e.g.
+ * after switching from 10HD, autoneg off to 100 HD,
+ * autoneg off.
+ */
+ }
+ mdio_write(dev, MII_BMCR, tmp);
+ readl(ioaddr + ChipConfig);
+ udelay(1);
+
+ /* find out what phy this is */
+ np->mii = (mdio_read(dev, MII_PHYSID1) << 16)
+ + mdio_read(dev, MII_PHYSID2);
+
+ /* handle external phys here */
+ switch (np->mii) {
+ case PHYID_AM79C874:
+ /* phy specific configuration for fibre/tp operation */
+ tmp = mdio_read(dev, MII_MCTRL);
+ tmp &= ~(MII_FX_SEL | MII_EN_SCRM);
+ if (dev->if_port == PORT_FIBRE)
+ tmp |= MII_FX_SEL;
+ else
+ tmp |= MII_EN_SCRM;
+ mdio_write(dev, MII_MCTRL, tmp);
+ break;
+ default:
+ break;
+ }
+ cfg = readl(ioaddr + ChipConfig);
+ if (cfg & CfgExtPhy)
+ return;
+
+ /* On page 78 of the spec, they recommend some settings for "optimum
+ performance" to be done in sequence. These settings optimize some
+ of the 100Mbit autodetection circuitry. They say we only want to
+ do this for rev C of the chip, but engineers at NSC (Bradley
+ Kennedy) recommends always setting them. If you don't, you get
+ errors on some autonegotiations that make the device unusable.
+
+ It seems that the DSP needs a few usec to reinitialize after
+ the start of the phy. Just retry writing these values until they
+ stick.
+ */
+ for (i=0;i<NATSEMI_HW_TIMEOUT;i++) {
+
+ int dspcfg;
+ writew(1, ioaddr + PGSEL);
+ writew(PMDCSR_VAL, ioaddr + PMDCSR);
+ writew(TSTDAT_VAL, ioaddr + TSTDAT);
+ np->dspcfg = (np->srr <= SRR_DP83815_C)?
+ DSPCFG_VAL : (DSPCFG_COEF | readw(ioaddr + DSPCFG));
+ writew(np->dspcfg, ioaddr + DSPCFG);
+ writew(SDCFG_VAL, ioaddr + SDCFG);
+ writew(0, ioaddr + PGSEL);
+ readl(ioaddr + ChipConfig);
+ udelay(10);
+
+ writew(1, ioaddr + PGSEL);
+ dspcfg = readw(ioaddr + DSPCFG);
+ writew(0, ioaddr + PGSEL);
+ if (np->dspcfg == dspcfg)
+ break;
+ }
+
+ if (netif_msg_link(np)) {
+ if (i==NATSEMI_HW_TIMEOUT) {
+ printk(KERN_INFO
+ "%s: DSPCFG mismatch after retrying for %d usec.\n",
+ dev->name, i*10);
+ } else {
+ printk(KERN_INFO
+ "%s: DSPCFG accepted after %d usec.\n",
+ dev->name, i*10);
+ }
+ }
+ /*
+ * Enable PHY Specific event based interrupts. Link state change
+ * and Auto-Negotiation Completion are among the affected.
+ * Read the intr status to clear it (needed for wake events).
+ */
+ readw(ioaddr + MIntrStatus);
+ writew(MICRIntEn, ioaddr + MIntrCtrl);
+}
+
+static int switch_port_external(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem *ioaddr = ns_ioaddr(dev);
+ u32 cfg;
+
+ cfg = readl(ioaddr + ChipConfig);
+ if (cfg & CfgExtPhy)
+ return 0;
+
+ if (netif_msg_link(np)) {
+ printk(KERN_INFO "%s: switching to external transceiver.\n",
+ dev->name);
+ }
+
+ /* 1) switch back to external phy */
+ writel(cfg | (CfgExtPhy | CfgPhyDis), ioaddr + ChipConfig);
+ readl(ioaddr + ChipConfig);
+ udelay(1);
+
+ /* 2) reset the external phy: */
+ /* resetting the external PHY has been known to cause a hub supplying
+ * power over Ethernet to kill the power. We don't want to kill
+ * power to this computer, so we avoid resetting the phy.
+ */
+
+ /* 3) reinit the phy fixup, it got lost during power down. */
+ move_int_phy(dev, np->phy_addr_external);
+ init_phy_fixup(dev);
+
+ return 1;
+}
+
+static int switch_port_internal(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem *ioaddr = ns_ioaddr(dev);
+ int i;
+ u32 cfg;
+ u16 bmcr;
+
+ cfg = readl(ioaddr + ChipConfig);
+ if (!(cfg &CfgExtPhy))
+ return 0;
+
+ if (netif_msg_link(np)) {
+ printk(KERN_INFO "%s: switching to internal transceiver.\n",
+ dev->name);
+ }
+ /* 1) switch back to internal phy: */
+ cfg = cfg & ~(CfgExtPhy | CfgPhyDis);
+ writel(cfg, ioaddr + ChipConfig);
+ readl(ioaddr + ChipConfig);
+ udelay(1);
+
+ /* 2) reset the internal phy: */
+ bmcr = readw(ioaddr+BasicControl+(MII_BMCR<<2));
+ writel(bmcr | BMCR_RESET, ioaddr+BasicControl+(MII_BMCR<<2));
+ readl(ioaddr + ChipConfig);
+ udelay(10);
+ for (i=0;i<NATSEMI_HW_TIMEOUT;i++) {
+ bmcr = readw(ioaddr+BasicControl+(MII_BMCR<<2));
+ if (!(bmcr & BMCR_RESET))
+ break;
+ udelay(10);
+ }
+ if (i==NATSEMI_HW_TIMEOUT && netif_msg_link(np)) {
+ printk(KERN_INFO
+ "%s: phy reset did not complete in %d usec.\n",
+ dev->name, i*10);
+ }
+ /* 3) reinit the phy fixup, it got lost during power down. */
+ init_phy_fixup(dev);
+
+ return 1;
+}
+
+/* Scan for a PHY on the external mii bus.
+ * There are two tricky points:
+ * - Do not scan while the internal phy is enabled. The internal phy will
+ * crash: e.g. reads from the DSPCFG register will return odd values and
+ * the nasty random phy reset code will reset the nic every few seconds.
+ * - The internal phy must be moved around, an external phy could
+ * have the same address as the internal phy.
+ */
+static int find_mii(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ int tmp;
+ int i;
+ int did_switch;
+
+ /* Switch to external phy */
+ did_switch = switch_port_external(dev);
+
+ /* Scan the possible phy addresses:
+ *
+ * PHY address 0 means that the phy is in isolate mode. Not yet
+ * supported due to lack of test hardware. User space should
+ * handle it through ethtool.
+ */
+ for (i = 1; i <= 31; i++) {
+ move_int_phy(dev, i);
+ tmp = miiport_read(dev, i, MII_BMSR);
+ if (tmp != 0xffff && tmp != 0x0000) {
+ /* found something! */
+ np->mii = (mdio_read(dev, MII_PHYSID1) << 16)
+ + mdio_read(dev, MII_PHYSID2);
+ if (netif_msg_probe(np)) {
+ printk(KERN_INFO "natsemi %s: found external phy %08x at address %d.\n",
+ pci_name(np->pci_dev), np->mii, i);
+ }
+ break;
+ }
+ }
+ /* And switch back to internal phy: */
+ if (did_switch)
+ switch_port_internal(dev);
+ return i;
+}
+
+/* CFG bits [13:16] [18:23] */
+#define CFG_RESET_SAVE 0xfde000
+/* WCSR bits [0:4] [9:10] */
+#define WCSR_RESET_SAVE 0x61f
+/* RFCR bits [20] [22] [27:31] */
+#define RFCR_RESET_SAVE 0xf8500000
+
+static void natsemi_reset(struct net_device *dev)
+{
+ int i;
+ u32 cfg;
+ u32 wcsr;
+ u32 rfcr;
+ u16 pmatch[3];
+ u16 sopass[3];
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem *ioaddr = ns_ioaddr(dev);
+
+ /*
+ * Resetting the chip causes some registers to be lost.
+ * Natsemi suggests NOT reloading the EEPROM while live, so instead
+ * we save the state that would have been loaded from EEPROM
+ * on a normal power-up (see the spec EEPROM map). This assumes
+ * whoever calls this will follow up with init_registers() eventually.
+ */
+
+ /* CFG */
+ cfg = readl(ioaddr + ChipConfig) & CFG_RESET_SAVE;
+ /* WCSR */
+ wcsr = readl(ioaddr + WOLCmd) & WCSR_RESET_SAVE;
+ /* RFCR */
+ rfcr = readl(ioaddr + RxFilterAddr) & RFCR_RESET_SAVE;
+ /* PMATCH */
+ for (i = 0; i < 3; i++) {
+ writel(i*2, ioaddr + RxFilterAddr);
+ pmatch[i] = readw(ioaddr + RxFilterData);
+ }
+ /* SOPAS */
+ for (i = 0; i < 3; i++) {
+ writel(0xa+(i*2), ioaddr + RxFilterAddr);
+ sopass[i] = readw(ioaddr + RxFilterData);
+ }
+
+ /* now whack the chip */
+ writel(ChipReset, ioaddr + ChipCmd);
+ for (i=0;i<NATSEMI_HW_TIMEOUT;i++) {
+ if (!(readl(ioaddr + ChipCmd) & ChipReset))
+ break;
+ udelay(5);
+ }
+ if (i==NATSEMI_HW_TIMEOUT) {
+ printk(KERN_WARNING "%s: reset did not complete in %d usec.\n",
+ dev->name, i*5);
+ } else if (netif_msg_hw(np)) {
+ printk(KERN_DEBUG "%s: reset completed in %d usec.\n",
+ dev->name, i*5);
+ }
+
+ /* restore CFG */
+ cfg |= readl(ioaddr + ChipConfig) & ~CFG_RESET_SAVE;
+ /* turn on external phy if it was selected */
+ if (dev->if_port == PORT_TP)
+ cfg &= ~(CfgExtPhy | CfgPhyDis);
+ else
+ cfg |= (CfgExtPhy | CfgPhyDis);
+ writel(cfg, ioaddr + ChipConfig);
+ /* restore WCSR */
+ wcsr |= readl(ioaddr + WOLCmd) & ~WCSR_RESET_SAVE;
+ writel(wcsr, ioaddr + WOLCmd);
+ /* read RFCR */
+ rfcr |= readl(ioaddr + RxFilterAddr) & ~RFCR_RESET_SAVE;
+ /* restore PMATCH */
+ for (i = 0; i < 3; i++) {
+ writel(i*2, ioaddr + RxFilterAddr);
+ writew(pmatch[i], ioaddr + RxFilterData);
+ }
+ for (i = 0; i < 3; i++) {
+ writel(0xa+(i*2), ioaddr + RxFilterAddr);
+ writew(sopass[i], ioaddr + RxFilterData);
+ }
+ /* restore RFCR */
+ writel(rfcr, ioaddr + RxFilterAddr);
+}
+
+static void reset_rx(struct net_device *dev)
+{
+ int i;
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem *ioaddr = ns_ioaddr(dev);
+
+ np->intr_status &= ~RxResetDone;
+
+ writel(RxReset, ioaddr + ChipCmd);
+
+ for (i=0;i<NATSEMI_HW_TIMEOUT;i++) {
+ np->intr_status |= readl(ioaddr + IntrStatus);
+ if (np->intr_status & RxResetDone)
+ break;
+ udelay(15);
+ }
+ if (i==NATSEMI_HW_TIMEOUT) {
+ printk(KERN_WARNING "%s: RX reset did not complete in %d usec.\n",
+ dev->name, i*15);
+ } else if (netif_msg_hw(np)) {
+ printk(KERN_WARNING "%s: RX reset took %d usec.\n",
+ dev->name, i*15);
+ }
+}
+
+static void natsemi_reload_eeprom(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem *ioaddr = ns_ioaddr(dev);
+ int i;
+
+ writel(EepromReload, ioaddr + PCIBusCfg);
+ for (i=0;i<NATSEMI_HW_TIMEOUT;i++) {
+ udelay(50);
+ if (!(readl(ioaddr + PCIBusCfg) & EepromReload))
+ break;
+ }
+ if (i==NATSEMI_HW_TIMEOUT) {
+ printk(KERN_WARNING "natsemi %s: EEPROM did not reload in %d usec.\n",
+ pci_name(np->pci_dev), i*50);
+ } else if (netif_msg_hw(np)) {
+ printk(KERN_DEBUG "natsemi %s: EEPROM reloaded in %d usec.\n",
+ pci_name(np->pci_dev), i*50);
+ }
+}
+
+static void natsemi_stop_rxtx(struct net_device *dev)
+{
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ struct netdev_private *np = netdev_priv(dev);
+ int i;
+
+ writel(RxOff | TxOff, ioaddr + ChipCmd);
+ for(i=0;i< NATSEMI_HW_TIMEOUT;i++) {
+ if ((readl(ioaddr + ChipCmd) & (TxOn|RxOn)) == 0)
+ break;
+ udelay(5);
+ }
+ if (i==NATSEMI_HW_TIMEOUT) {
+ printk(KERN_WARNING "%s: Tx/Rx process did not stop in %d usec.\n",
+ dev->name, i*5);
+ } else if (netif_msg_hw(np)) {
+ printk(KERN_DEBUG "%s: Tx/Rx process stopped in %d usec.\n",
+ dev->name, i*5);
+ }
+}
+
+static int netdev_open(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ int i;
+
+ /* Reset the chip, just in case. */
+ natsemi_reset(dev);
+
+ i = request_irq(dev->irq, intr_handler, IRQF_SHARED, dev->name, dev);
+ if (i) return i;
+
+ if (netif_msg_ifup(np))
+ printk(KERN_DEBUG "%s: netdev_open() irq %d.\n",
+ dev->name, dev->irq);
+ i = alloc_ring(dev);
+ if (i < 0) {
+ free_irq(dev->irq, dev);
+ return i;
+ }
+ napi_enable(&np->napi);
+
+ init_ring(dev);
+ spin_lock_irq(&np->lock);
+ init_registers(dev);
+ /* now set the MAC address according to dev->dev_addr */
+ for (i = 0; i < 3; i++) {
+ u16 mac = (dev->dev_addr[2*i+1]<<8) + dev->dev_addr[2*i];
+
+ writel(i*2, ioaddr + RxFilterAddr);
+ writew(mac, ioaddr + RxFilterData);
+ }
+ writel(np->cur_rx_mode, ioaddr + RxFilterAddr);
+ spin_unlock_irq(&np->lock);
+
+ netif_start_queue(dev);
+
+ if (netif_msg_ifup(np))
+ printk(KERN_DEBUG "%s: Done netdev_open(), status: %#08x.\n",
+ dev->name, (int)readl(ioaddr + ChipCmd));
+
+ /* Set the timer to check for link beat. */
+ init_timer(&np->timer);
+ np->timer.expires = round_jiffies(jiffies + NATSEMI_TIMER_FREQ);
+ np->timer.data = (unsigned long)dev;
+ np->timer.function = netdev_timer; /* timer handler */
+ add_timer(&np->timer);
+
+ return 0;
+}
+
+static void do_cable_magic(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem *ioaddr = ns_ioaddr(dev);
+
+ if (dev->if_port != PORT_TP)
+ return;
+
+ if (np->srr >= SRR_DP83816_A5)
+ return;
+
+ /*
+ * 100 MBit links with short cables can trip an issue with the chip.
+ * The problem manifests as lots of CRC errors and/or flickering
+ * activity LED while idle. This process is based on instructions
+ * from engineers at National.
+ */
+ if (readl(ioaddr + ChipConfig) & CfgSpeed100) {
+ u16 data;
+
+ writew(1, ioaddr + PGSEL);
+ /*
+ * coefficient visibility should already be enabled via
+ * DSPCFG | 0x1000
+ */
+ data = readw(ioaddr + TSTDAT) & 0xff;
+ /*
+ * the value must be negative, and within certain values
+ * (these values all come from National)
+ */
+ if (!(data & 0x80) || ((data >= 0xd8) && (data <= 0xff))) {
+ np = netdev_priv(dev);
+
+ /* the bug has been triggered - fix the coefficient */
+ writew(TSTDAT_FIXED, ioaddr + TSTDAT);
+ /* lock the value */
+ data = readw(ioaddr + DSPCFG);
+ np->dspcfg = data | DSPCFG_LOCK;
+ writew(np->dspcfg, ioaddr + DSPCFG);
+ }
+ writew(0, ioaddr + PGSEL);
+ }
+}
+
+static void undo_cable_magic(struct net_device *dev)
+{
+ u16 data;
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+
+ if (dev->if_port != PORT_TP)
+ return;
+
+ if (np->srr >= SRR_DP83816_A5)
+ return;
+
+ writew(1, ioaddr + PGSEL);
+ /* make sure the lock bit is clear */
+ data = readw(ioaddr + DSPCFG);
+ np->dspcfg = data & ~DSPCFG_LOCK;
+ writew(np->dspcfg, ioaddr + DSPCFG);
+ writew(0, ioaddr + PGSEL);
+}
+
+static void check_link(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ int duplex = np->duplex;
+ u16 bmsr;
+
+ /* If we are ignoring the PHY then don't try reading it. */
+ if (np->ignore_phy)
+ goto propagate_state;
+
+ /* The link status field is latched: it remains low after a temporary
+ * link failure until it's read. We need the current link status,
+ * thus read twice.
+ */
+ mdio_read(dev, MII_BMSR);
+ bmsr = mdio_read(dev, MII_BMSR);
+
+ if (!(bmsr & BMSR_LSTATUS)) {
+ if (netif_carrier_ok(dev)) {
+ if (netif_msg_link(np))
+ printk(KERN_NOTICE "%s: link down.\n",
+ dev->name);
+ netif_carrier_off(dev);
+ undo_cable_magic(dev);
+ }
+ return;
+ }
+ if (!netif_carrier_ok(dev)) {
+ if (netif_msg_link(np))
+ printk(KERN_NOTICE "%s: link up.\n", dev->name);
+ netif_carrier_on(dev);
+ do_cable_magic(dev);
+ }
+
+ duplex = np->full_duplex;
+ if (!duplex) {
+ if (bmsr & BMSR_ANEGCOMPLETE) {
+ int tmp = mii_nway_result(
+ np->advertising & mdio_read(dev, MII_LPA));
+ if (tmp == LPA_100FULL || tmp == LPA_10FULL)
+ duplex = 1;
+ } else if (mdio_read(dev, MII_BMCR) & BMCR_FULLDPLX)
+ duplex = 1;
+ }
+
+propagate_state:
+ /* if duplex is set then bit 28 must be set, too */
+ if (duplex ^ !!(np->rx_config & RxAcceptTx)) {
+ if (netif_msg_link(np))
+ printk(KERN_INFO
+ "%s: Setting %s-duplex based on negotiated "
+ "link capability.\n", dev->name,
+ duplex ? "full" : "half");
+ if (duplex) {
+ np->rx_config |= RxAcceptTx;
+ np->tx_config |= TxCarrierIgn | TxHeartIgn;
+ } else {
+ np->rx_config &= ~RxAcceptTx;
+ np->tx_config &= ~(TxCarrierIgn | TxHeartIgn);
+ }
+ writel(np->tx_config, ioaddr + TxConfig);
+ writel(np->rx_config, ioaddr + RxConfig);
+ }
+}
+
+static void init_registers(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+
+ init_phy_fixup(dev);
+
+ /* clear any interrupts that are pending, such as wake events */
+ readl(ioaddr + IntrStatus);
+
+ writel(np->ring_dma, ioaddr + RxRingPtr);
+ writel(np->ring_dma + RX_RING_SIZE * sizeof(struct netdev_desc),
+ ioaddr + TxRingPtr);
+
+ /* Initialize other registers.
+ * Configure the PCI bus bursts and FIFO thresholds.
+ * Configure for standard, in-spec Ethernet.
+ * Start with half-duplex. check_link will update
+ * to the correct settings.
+ */
+
+ /* DRTH: 2: start tx if 64 bytes are in the fifo
+ * FLTH: 0x10: refill with next packet if 512 bytes are free
+ * MXDMA: 0: up to 256 byte bursts.
+ * MXDMA must be <= FLTH
+ * ECRETRY=1
+ * ATP=1
+ */
+ np->tx_config = TxAutoPad | TxCollRetry | TxMxdma_256 |
+ TX_FLTH_VAL | TX_DRTH_VAL_START;
+ writel(np->tx_config, ioaddr + TxConfig);
+
+ /* DRTH 0x10: start copying to memory if 128 bytes are in the fifo
+ * MXDMA 0: up to 256 byte bursts
+ */
+ np->rx_config = RxMxdma_256 | RX_DRTH_VAL;
+ /* if receive ring now has bigger buffers than normal, enable jumbo */
+ if (np->rx_buf_sz > NATSEMI_LONGPKT)
+ np->rx_config |= RxAcceptLong;
+
+ writel(np->rx_config, ioaddr + RxConfig);
+
+ /* Disable PME:
+ * The PME bit is initialized from the EEPROM contents.
+ * PCI cards probably have PME disabled, but motherboard
+ * implementations may have PME set to enable WakeOnLan.
+ * With PME set the chip will scan incoming packets but
+ * nothing will be written to memory. */
+ np->SavedClkRun = readl(ioaddr + ClkRun);
+ writel(np->SavedClkRun & ~PMEEnable, ioaddr + ClkRun);
+ if (np->SavedClkRun & PMEStatus && netif_msg_wol(np)) {
+ printk(KERN_NOTICE "%s: Wake-up event %#08x\n",
+ dev->name, readl(ioaddr + WOLCmd));
+ }
+
+ check_link(dev);
+ __set_rx_mode(dev);
+
+ /* Enable interrupts by setting the interrupt mask. */
+ writel(DEFAULT_INTR, ioaddr + IntrMask);
+ natsemi_irq_enable(dev);
+
+ writel(RxOn | TxOn, ioaddr + ChipCmd);
+ writel(StatsClear, ioaddr + StatsCtrl); /* Clear Stats */
+}
+
+/*
+ * netdev_timer:
+ * Purpose:
+ * 1) check for link changes. Usually they are handled by the MII interrupt
+ * but it doesn't hurt to check twice.
+ * 2) check for sudden death of the NIC:
+ * It seems that a reference set for this chip went out with incorrect info,
+ * and there exist boards that aren't quite right. An unexpected voltage
+ * drop can cause the PHY to get itself in a weird state (basically reset).
+ * NOTE: this only seems to affect revC chips. The user can disable
+ * this check via dspcfg_workaround sysfs option.
+ * 3) check of death of the RX path due to OOM
+ */
+static void netdev_timer(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *)data;
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ int next_tick = NATSEMI_TIMER_FREQ;
+
+ if (netif_msg_timer(np)) {
+ /* DO NOT read the IntrStatus register,
+ * a read clears any pending interrupts.
+ */
+ printk(KERN_DEBUG "%s: Media selection timer tick.\n",
+ dev->name);
+ }
+
+ if (dev->if_port == PORT_TP) {
+ u16 dspcfg;
+
+ spin_lock_irq(&np->lock);
+ /* check for a nasty random phy-reset - use dspcfg as a flag */
+ writew(1, ioaddr+PGSEL);
+ dspcfg = readw(ioaddr+DSPCFG);
+ writew(0, ioaddr+PGSEL);
+ if (np->dspcfg_workaround && dspcfg != np->dspcfg) {
+ if (!netif_queue_stopped(dev)) {
+ spin_unlock_irq(&np->lock);
+ if (netif_msg_drv(np))
+ printk(KERN_NOTICE "%s: possible phy reset: "
+ "re-initializing\n", dev->name);
+ disable_irq(dev->irq);
+ spin_lock_irq(&np->lock);
+ natsemi_stop_rxtx(dev);
+ dump_ring(dev);
+ reinit_ring(dev);
+ init_registers(dev);
+ spin_unlock_irq(&np->lock);
+ enable_irq(dev->irq);
+ } else {
+ /* hurry back */
+ next_tick = HZ;
+ spin_unlock_irq(&np->lock);
+ }
+ } else {
+ /* init_registers() calls check_link() for the above case */
+ check_link(dev);
+ spin_unlock_irq(&np->lock);
+ }
+ } else {
+ spin_lock_irq(&np->lock);
+ check_link(dev);
+ spin_unlock_irq(&np->lock);
+ }
+ if (np->oom) {
+ disable_irq(dev->irq);
+ np->oom = 0;
+ refill_rx(dev);
+ enable_irq(dev->irq);
+ if (!np->oom) {
+ writel(RxOn, ioaddr + ChipCmd);
+ } else {
+ next_tick = 1;
+ }
+ }
+
+ if (next_tick > 1)
+ mod_timer(&np->timer, round_jiffies(jiffies + next_tick));
+ else
+ mod_timer(&np->timer, jiffies + next_tick);
+}
+
+static void dump_ring(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+
+ if (netif_msg_pktdata(np)) {
+ int i;
+ printk(KERN_DEBUG " Tx ring at %p:\n", np->tx_ring);
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ printk(KERN_DEBUG " #%d desc. %#08x %#08x %#08x.\n",
+ i, np->tx_ring[i].next_desc,
+ np->tx_ring[i].cmd_status,
+ np->tx_ring[i].addr);
+ }
+ printk(KERN_DEBUG " Rx ring %p:\n", np->rx_ring);
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ printk(KERN_DEBUG " #%d desc. %#08x %#08x %#08x.\n",
+ i, np->rx_ring[i].next_desc,
+ np->rx_ring[i].cmd_status,
+ np->rx_ring[i].addr);
+ }
+ }
+}
+
+static void ns_tx_timeout(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+
+ disable_irq(dev->irq);
+ spin_lock_irq(&np->lock);
+ if (!np->hands_off) {
+ if (netif_msg_tx_err(np))
+ printk(KERN_WARNING
+ "%s: Transmit timed out, status %#08x,"
+ " resetting...\n",
+ dev->name, readl(ioaddr + IntrStatus));
+ dump_ring(dev);
+
+ natsemi_reset(dev);
+ reinit_ring(dev);
+ init_registers(dev);
+ } else {
+ printk(KERN_WARNING
+ "%s: tx_timeout while in hands_off state?\n",
+ dev->name);
+ }
+ spin_unlock_irq(&np->lock);
+ enable_irq(dev->irq);
+
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ dev->stats.tx_errors++;
+ netif_wake_queue(dev);
+}
+
+static int alloc_ring(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ np->rx_ring = pci_alloc_consistent(np->pci_dev,
+ sizeof(struct netdev_desc) * (RX_RING_SIZE+TX_RING_SIZE),
+ &np->ring_dma);
+ if (!np->rx_ring)
+ return -ENOMEM;
+ np->tx_ring = &np->rx_ring[RX_RING_SIZE];
+ return 0;
+}
+
+static void refill_rx(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+
+ /* Refill the Rx ring buffers. */
+ for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) {
+ struct sk_buff *skb;
+ int entry = np->dirty_rx % RX_RING_SIZE;
+ if (np->rx_skbuff[entry] == NULL) {
+ unsigned int buflen = np->rx_buf_sz+NATSEMI_PADDING;
+ skb = dev_alloc_skb(buflen);
+ np->rx_skbuff[entry] = skb;
+ if (skb == NULL)
+ break; /* Better luck next round. */
+ skb->dev = dev; /* Mark as being used by this device. */
+ np->rx_dma[entry] = pci_map_single(np->pci_dev,
+ skb->data, buflen, PCI_DMA_FROMDEVICE);
+ np->rx_ring[entry].addr = cpu_to_le32(np->rx_dma[entry]);
+ }
+ np->rx_ring[entry].cmd_status = cpu_to_le32(np->rx_buf_sz);
+ }
+ if (np->cur_rx - np->dirty_rx == RX_RING_SIZE) {
+ if (netif_msg_rx_err(np))
+ printk(KERN_WARNING "%s: going OOM.\n", dev->name);
+ np->oom = 1;
+ }
+}
+
+static void set_bufsize(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ if (dev->mtu <= ETH_DATA_LEN)
+ np->rx_buf_sz = ETH_DATA_LEN + NATSEMI_HEADERS;
+ else
+ np->rx_buf_sz = dev->mtu + NATSEMI_HEADERS;
+}
+
+/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
+static void init_ring(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ int i;
+
+ /* 1) TX ring */
+ np->dirty_tx = np->cur_tx = 0;
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ np->tx_skbuff[i] = NULL;
+ np->tx_ring[i].next_desc = cpu_to_le32(np->ring_dma
+ +sizeof(struct netdev_desc)
+ *((i+1)%TX_RING_SIZE+RX_RING_SIZE));
+ np->tx_ring[i].cmd_status = 0;
+ }
+
+ /* 2) RX ring */
+ np->dirty_rx = 0;
+ np->cur_rx = RX_RING_SIZE;
+ np->oom = 0;
+ set_bufsize(dev);
+
+ np->rx_head_desc = &np->rx_ring[0];
+
+ /* Please be careful before changing this loop - at least gcc-2.95.1
+ * miscompiles it otherwise.
+ */
+ /* Initialize all Rx descriptors. */
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ np->rx_ring[i].next_desc = cpu_to_le32(np->ring_dma
+ +sizeof(struct netdev_desc)
+ *((i+1)%RX_RING_SIZE));
+ np->rx_ring[i].cmd_status = cpu_to_le32(DescOwn);
+ np->rx_skbuff[i] = NULL;
+ }
+ refill_rx(dev);
+ dump_ring(dev);
+}
+
+static void drain_tx(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ int i;
+
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ if (np->tx_skbuff[i]) {
+ pci_unmap_single(np->pci_dev,
+ np->tx_dma[i], np->tx_skbuff[i]->len,
+ PCI_DMA_TODEVICE);
+ dev_kfree_skb(np->tx_skbuff[i]);
+ dev->stats.tx_dropped++;
+ }
+ np->tx_skbuff[i] = NULL;
+ }
+}
+
+static void drain_rx(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ unsigned int buflen = np->rx_buf_sz;
+ int i;
+
+ /* Free all the skbuffs in the Rx queue. */
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ np->rx_ring[i].cmd_status = 0;
+ np->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */
+ if (np->rx_skbuff[i]) {
+ pci_unmap_single(np->pci_dev, np->rx_dma[i],
+ buflen + NATSEMI_PADDING,
+ PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(np->rx_skbuff[i]);
+ }
+ np->rx_skbuff[i] = NULL;
+ }
+}
+
+static void drain_ring(struct net_device *dev)
+{
+ drain_rx(dev);
+ drain_tx(dev);
+}
+
+static void free_ring(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ pci_free_consistent(np->pci_dev,
+ sizeof(struct netdev_desc) * (RX_RING_SIZE+TX_RING_SIZE),
+ np->rx_ring, np->ring_dma);
+}
+
+static void reinit_rx(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ int i;
+
+ /* RX Ring */
+ np->dirty_rx = 0;
+ np->cur_rx = RX_RING_SIZE;
+ np->rx_head_desc = &np->rx_ring[0];
+ /* Initialize all Rx descriptors. */
+ for (i = 0; i < RX_RING_SIZE; i++)
+ np->rx_ring[i].cmd_status = cpu_to_le32(DescOwn);
+
+ refill_rx(dev);
+}
+
+static void reinit_ring(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ int i;
+
+ /* drain TX ring */
+ drain_tx(dev);
+ np->dirty_tx = np->cur_tx = 0;
+ for (i=0;i<TX_RING_SIZE;i++)
+ np->tx_ring[i].cmd_status = 0;
+
+ reinit_rx(dev);
+}
+
+static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ unsigned entry;
+ unsigned long flags;
+
+ /* Note: Ordering is important here, set the field with the
+ "ownership" bit last, and only then increment cur_tx. */
+
+ /* Calculate the next Tx descriptor entry. */
+ entry = np->cur_tx % TX_RING_SIZE;
+
+ np->tx_skbuff[entry] = skb;
+ np->tx_dma[entry] = pci_map_single(np->pci_dev,
+ skb->data,skb->len, PCI_DMA_TODEVICE);
+
+ np->tx_ring[entry].addr = cpu_to_le32(np->tx_dma[entry]);
+
+ spin_lock_irqsave(&np->lock, flags);
+
+ if (!np->hands_off) {
+ np->tx_ring[entry].cmd_status = cpu_to_le32(DescOwn | skb->len);
+ /* StrongARM: Explicitly cache flush np->tx_ring and
+ * skb->data,skb->len. */
+ wmb();
+ np->cur_tx++;
+ if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1) {
+ netdev_tx_done(dev);
+ if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1)
+ netif_stop_queue(dev);
+ }
+ /* Wake the potentially-idle transmit channel. */
+ writel(TxOn, ioaddr + ChipCmd);
+ } else {
+ dev_kfree_skb_irq(skb);
+ dev->stats.tx_dropped++;
+ }
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ if (netif_msg_tx_queued(np)) {
+ printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n",
+ dev->name, np->cur_tx, entry);
+ }
+ return NETDEV_TX_OK;
+}
+
+static void netdev_tx_done(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+
+ for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
+ int entry = np->dirty_tx % TX_RING_SIZE;
+ if (np->tx_ring[entry].cmd_status & cpu_to_le32(DescOwn))
+ break;
+ if (netif_msg_tx_done(np))
+ printk(KERN_DEBUG
+ "%s: tx frame #%d finished, status %#08x.\n",
+ dev->name, np->dirty_tx,
+ le32_to_cpu(np->tx_ring[entry].cmd_status));
+ if (np->tx_ring[entry].cmd_status & cpu_to_le32(DescPktOK)) {
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += np->tx_skbuff[entry]->len;
+ } else { /* Various Tx errors */
+ int tx_status =
+ le32_to_cpu(np->tx_ring[entry].cmd_status);
+ if (tx_status & (DescTxAbort|DescTxExcColl))
+ dev->stats.tx_aborted_errors++;
+ if (tx_status & DescTxFIFO)
+ dev->stats.tx_fifo_errors++;
+ if (tx_status & DescTxCarrier)
+ dev->stats.tx_carrier_errors++;
+ if (tx_status & DescTxOOWCol)
+ dev->stats.tx_window_errors++;
+ dev->stats.tx_errors++;
+ }
+ pci_unmap_single(np->pci_dev,np->tx_dma[entry],
+ np->tx_skbuff[entry]->len,
+ PCI_DMA_TODEVICE);
+ /* Free the original skb. */
+ dev_kfree_skb_irq(np->tx_skbuff[entry]);
+ np->tx_skbuff[entry] = NULL;
+ }
+ if (netif_queue_stopped(dev) &&
+ np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) {
+ /* The ring is no longer full, wake queue. */
+ netif_wake_queue(dev);
+ }
+}
+
+/* The interrupt handler doesn't actually handle interrupts itself, it
+ * schedules a NAPI poll if there is anything to do. */
+static irqreturn_t intr_handler(int irq, void *dev_instance)
+{
+ struct net_device *dev = dev_instance;
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+
+ /* Reading IntrStatus automatically acknowledges so don't do
+ * that while interrupts are disabled, (for example, while a
+ * poll is scheduled). */
+ if (np->hands_off || !readl(ioaddr + IntrEnable))
+ return IRQ_NONE;
+
+ np->intr_status = readl(ioaddr + IntrStatus);
+
+ if (!np->intr_status)
+ return IRQ_NONE;
+
+ if (netif_msg_intr(np))
+ printk(KERN_DEBUG
+ "%s: Interrupt, status %#08x, mask %#08x.\n",
+ dev->name, np->intr_status,
+ readl(ioaddr + IntrMask));
+
+ prefetch(&np->rx_skbuff[np->cur_rx % RX_RING_SIZE]);
+
+ if (napi_schedule_prep(&np->napi)) {
+ /* Disable interrupts and register for poll */
+ natsemi_irq_disable(dev);
+ __napi_schedule(&np->napi);
+ } else
+ printk(KERN_WARNING
+ "%s: Ignoring interrupt, status %#08x, mask %#08x.\n",
+ dev->name, np->intr_status,
+ readl(ioaddr + IntrMask));
+
+ return IRQ_HANDLED;
+}
+
+/* This is the NAPI poll routine. As well as the standard RX handling
+ * it also handles all other interrupts that the chip might raise.
+ */
+static int natsemi_poll(struct napi_struct *napi, int budget)
+{
+ struct netdev_private *np = container_of(napi, struct netdev_private, napi);
+ struct net_device *dev = np->dev;
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ int work_done = 0;
+
+ do {
+ if (netif_msg_intr(np))
+ printk(KERN_DEBUG
+ "%s: Poll, status %#08x, mask %#08x.\n",
+ dev->name, np->intr_status,
+ readl(ioaddr + IntrMask));
+
+ /* netdev_rx() may read IntrStatus again if the RX state
+ * machine falls over so do it first. */
+ if (np->intr_status &
+ (IntrRxDone | IntrRxIntr | RxStatusFIFOOver |
+ IntrRxErr | IntrRxOverrun)) {
+ netdev_rx(dev, &work_done, budget);
+ }
+
+ if (np->intr_status &
+ (IntrTxDone | IntrTxIntr | IntrTxIdle | IntrTxErr)) {
+ spin_lock(&np->lock);
+ netdev_tx_done(dev);
+ spin_unlock(&np->lock);
+ }
+
+ /* Abnormal error summary/uncommon events handlers. */
+ if (np->intr_status & IntrAbnormalSummary)
+ netdev_error(dev, np->intr_status);
+
+ if (work_done >= budget)
+ return work_done;
+
+ np->intr_status = readl(ioaddr + IntrStatus);
+ } while (np->intr_status);
+
+ napi_complete(napi);
+
+ /* Reenable interrupts providing nothing is trying to shut
+ * the chip down. */
+ spin_lock(&np->lock);
+ if (!np->hands_off)
+ natsemi_irq_enable(dev);
+ spin_unlock(&np->lock);
+
+ return work_done;
+}
+
+/* This routine is logically part of the interrupt handler, but separated
+ for clarity and better register allocation. */
+static void netdev_rx(struct net_device *dev, int *work_done, int work_to_do)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ int entry = np->cur_rx % RX_RING_SIZE;
+ int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx;
+ s32 desc_status = le32_to_cpu(np->rx_head_desc->cmd_status);
+ unsigned int buflen = np->rx_buf_sz;
+ void __iomem * ioaddr = ns_ioaddr(dev);
+
+ /* If the driver owns the next entry it's a new packet. Send it up. */
+ while (desc_status < 0) { /* e.g. & DescOwn */
+ int pkt_len;
+ if (netif_msg_rx_status(np))
+ printk(KERN_DEBUG
+ " netdev_rx() entry %d status was %#08x.\n",
+ entry, desc_status);
+ if (--boguscnt < 0)
+ break;
+
+ if (*work_done >= work_to_do)
+ break;
+
+ (*work_done)++;
+
+ pkt_len = (desc_status & DescSizeMask) - 4;
+ if ((desc_status&(DescMore|DescPktOK|DescRxLong)) != DescPktOK){
+ if (desc_status & DescMore) {
+ unsigned long flags;
+
+ if (netif_msg_rx_err(np))
+ printk(KERN_WARNING
+ "%s: Oversized(?) Ethernet "
+ "frame spanned multiple "
+ "buffers, entry %#08x "
+ "status %#08x.\n", dev->name,
+ np->cur_rx, desc_status);
+ dev->stats.rx_length_errors++;
+
+ /* The RX state machine has probably
+ * locked up beneath us. Follow the
+ * reset procedure documented in
+ * AN-1287. */
+
+ spin_lock_irqsave(&np->lock, flags);
+ reset_rx(dev);
+ reinit_rx(dev);
+ writel(np->ring_dma, ioaddr + RxRingPtr);
+ check_link(dev);
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ /* We'll enable RX on exit from this
+ * function. */
+ break;
+
+ } else {
+ /* There was an error. */
+ dev->stats.rx_errors++;
+ if (desc_status & (DescRxAbort|DescRxOver))
+ dev->stats.rx_over_errors++;
+ if (desc_status & (DescRxLong|DescRxRunt))
+ dev->stats.rx_length_errors++;
+ if (desc_status & (DescRxInvalid|DescRxAlign))
+ dev->stats.rx_frame_errors++;
+ if (desc_status & DescRxCRC)
+ dev->stats.rx_crc_errors++;
+ }
+ } else if (pkt_len > np->rx_buf_sz) {
+ /* if this is the tail of a double buffer
+ * packet, we've already counted the error
+ * on the first part. Ignore the second half.
+ */
+ } else {
+ struct sk_buff *skb;
+ /* Omit CRC size. */
+ /* Check if the packet is long enough to accept
+ * without copying to a minimally-sized skbuff. */
+ if (pkt_len < rx_copybreak &&
+ (skb = dev_alloc_skb(pkt_len + RX_OFFSET)) != NULL) {
+ /* 16 byte align the IP header */
+ skb_reserve(skb, RX_OFFSET);
+ pci_dma_sync_single_for_cpu(np->pci_dev,
+ np->rx_dma[entry],
+ buflen,
+ PCI_DMA_FROMDEVICE);
+ skb_copy_to_linear_data(skb,
+ np->rx_skbuff[entry]->data, pkt_len);
+ skb_put(skb, pkt_len);
+ pci_dma_sync_single_for_device(np->pci_dev,
+ np->rx_dma[entry],
+ buflen,
+ PCI_DMA_FROMDEVICE);
+ } else {
+ pci_unmap_single(np->pci_dev, np->rx_dma[entry],
+ buflen + NATSEMI_PADDING,
+ PCI_DMA_FROMDEVICE);
+ skb_put(skb = np->rx_skbuff[entry], pkt_len);
+ np->rx_skbuff[entry] = NULL;
+ }
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_receive_skb(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += pkt_len;
+ }
+ entry = (++np->cur_rx) % RX_RING_SIZE;
+ np->rx_head_desc = &np->rx_ring[entry];
+ desc_status = le32_to_cpu(np->rx_head_desc->cmd_status);
+ }
+ refill_rx(dev);
+
+ /* Restart Rx engine if stopped. */
+ if (np->oom)
+ mod_timer(&np->timer, jiffies + 1);
+ else
+ writel(RxOn, ioaddr + ChipCmd);
+}
+
+static void netdev_error(struct net_device *dev, int intr_status)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+
+ spin_lock(&np->lock);
+ if (intr_status & LinkChange) {
+ u16 lpa = mdio_read(dev, MII_LPA);
+ if (mdio_read(dev, MII_BMCR) & BMCR_ANENABLE &&
+ netif_msg_link(np)) {
+ printk(KERN_INFO
+ "%s: Autonegotiation advertising"
+ " %#04x partner %#04x.\n", dev->name,
+ np->advertising, lpa);
+ }
+
+ /* read MII int status to clear the flag */
+ readw(ioaddr + MIntrStatus);
+ check_link(dev);
+ }
+ if (intr_status & StatsMax) {
+ __get_stats(dev);
+ }
+ if (intr_status & IntrTxUnderrun) {
+ if ((np->tx_config & TxDrthMask) < TX_DRTH_VAL_LIMIT) {
+ np->tx_config += TX_DRTH_VAL_INC;
+ if (netif_msg_tx_err(np))
+ printk(KERN_NOTICE
+ "%s: increased tx threshold, txcfg %#08x.\n",
+ dev->name, np->tx_config);
+ } else {
+ if (netif_msg_tx_err(np))
+ printk(KERN_NOTICE
+ "%s: tx underrun with maximum tx threshold, txcfg %#08x.\n",
+ dev->name, np->tx_config);
+ }
+ writel(np->tx_config, ioaddr + TxConfig);
+ }
+ if (intr_status & WOLPkt && netif_msg_wol(np)) {
+ int wol_status = readl(ioaddr + WOLCmd);
+ printk(KERN_NOTICE "%s: Link wake-up event %#08x\n",
+ dev->name, wol_status);
+ }
+ if (intr_status & RxStatusFIFOOver) {
+ if (netif_msg_rx_err(np) && netif_msg_intr(np)) {
+ printk(KERN_NOTICE "%s: Rx status FIFO overrun\n",
+ dev->name);
+ }
+ dev->stats.rx_fifo_errors++;
+ dev->stats.rx_errors++;
+ }
+ /* Hmmmmm, it's not clear how to recover from PCI faults. */
+ if (intr_status & IntrPCIErr) {
+ printk(KERN_NOTICE "%s: PCI error %#08x\n", dev->name,
+ intr_status & IntrPCIErr);
+ dev->stats.tx_fifo_errors++;
+ dev->stats.tx_errors++;
+ dev->stats.rx_fifo_errors++;
+ dev->stats.rx_errors++;
+ }
+ spin_unlock(&np->lock);
+}
+
+static void __get_stats(struct net_device *dev)
+{
+ void __iomem * ioaddr = ns_ioaddr(dev);
+
+ /* The chip only need report frame silently dropped. */
+ dev->stats.rx_crc_errors += readl(ioaddr + RxCRCErrs);
+ dev->stats.rx_missed_errors += readl(ioaddr + RxMissed);
+}
+
+static struct net_device_stats *get_stats(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+
+ /* The chip only need report frame silently dropped. */
+ spin_lock_irq(&np->lock);
+ if (netif_running(dev) && !np->hands_off)
+ __get_stats(dev);
+ spin_unlock_irq(&np->lock);
+
+ return &dev->stats;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void natsemi_poll_controller(struct net_device *dev)
+{
+ disable_irq(dev->irq);
+ intr_handler(dev->irq, dev);
+ enable_irq(dev->irq);
+}
+#endif
+
+#define HASH_TABLE 0x200
+static void __set_rx_mode(struct net_device *dev)
+{
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ struct netdev_private *np = netdev_priv(dev);
+ u8 mc_filter[64]; /* Multicast hash filter */
+ u32 rx_mode;
+
+ if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
+ rx_mode = RxFilterEnable | AcceptBroadcast
+ | AcceptAllMulticast | AcceptAllPhys | AcceptMyPhys;
+ } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
+ (dev->flags & IFF_ALLMULTI)) {
+ rx_mode = RxFilterEnable | AcceptBroadcast
+ | AcceptAllMulticast | AcceptMyPhys;
+ } else {
+ struct netdev_hw_addr *ha;
+ int i;
+
+ memset(mc_filter, 0, sizeof(mc_filter));
+ netdev_for_each_mc_addr(ha, dev) {
+ int b = (ether_crc(ETH_ALEN, ha->addr) >> 23) & 0x1ff;
+ mc_filter[b/8] |= (1 << (b & 0x07));
+ }
+ rx_mode = RxFilterEnable | AcceptBroadcast
+ | AcceptMulticast | AcceptMyPhys;
+ for (i = 0; i < 64; i += 2) {
+ writel(HASH_TABLE + i, ioaddr + RxFilterAddr);
+ writel((mc_filter[i + 1] << 8) + mc_filter[i],
+ ioaddr + RxFilterData);
+ }
+ }
+ writel(rx_mode, ioaddr + RxFilterAddr);
+ np->cur_rx_mode = rx_mode;
+}
+
+static int natsemi_change_mtu(struct net_device *dev, int new_mtu)
+{
+ if (new_mtu < 64 || new_mtu > NATSEMI_RX_LIMIT-NATSEMI_HEADERS)
+ return -EINVAL;
+
+ dev->mtu = new_mtu;
+
+ /* synchronized against open : rtnl_lock() held by caller */
+ if (netif_running(dev)) {
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+
+ disable_irq(dev->irq);
+ spin_lock(&np->lock);
+ /* stop engines */
+ natsemi_stop_rxtx(dev);
+ /* drain rx queue */
+ drain_rx(dev);
+ /* change buffers */
+ set_bufsize(dev);
+ reinit_rx(dev);
+ writel(np->ring_dma, ioaddr + RxRingPtr);
+ /* restart engines */
+ writel(RxOn | TxOn, ioaddr + ChipCmd);
+ spin_unlock(&np->lock);
+ enable_irq(dev->irq);
+ }
+ return 0;
+}
+
+static void set_rx_mode(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ spin_lock_irq(&np->lock);
+ if (!np->hands_off)
+ __set_rx_mode(dev);
+ spin_unlock_irq(&np->lock);
+}
+
+static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ strncpy(info->driver, DRV_NAME, ETHTOOL_BUSINFO_LEN);
+ strncpy(info->version, DRV_VERSION, ETHTOOL_BUSINFO_LEN);
+ strncpy(info->bus_info, pci_name(np->pci_dev), ETHTOOL_BUSINFO_LEN);
+}
+
+static int get_regs_len(struct net_device *dev)
+{
+ return NATSEMI_REGS_SIZE;
+}
+
+static int get_eeprom_len(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ return np->eeprom_size;
+}
+
+static int get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ spin_lock_irq(&np->lock);
+ netdev_get_ecmd(dev, ecmd);
+ spin_unlock_irq(&np->lock);
+ return 0;
+}
+
+static int set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ int res;
+ spin_lock_irq(&np->lock);
+ res = netdev_set_ecmd(dev, ecmd);
+ spin_unlock_irq(&np->lock);
+ return res;
+}
+
+static void get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ spin_lock_irq(&np->lock);
+ netdev_get_wol(dev, &wol->supported, &wol->wolopts);
+ netdev_get_sopass(dev, wol->sopass);
+ spin_unlock_irq(&np->lock);
+}
+
+static int set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ int res;
+ spin_lock_irq(&np->lock);
+ netdev_set_wol(dev, wol->wolopts);
+ res = netdev_set_sopass(dev, wol->sopass);
+ spin_unlock_irq(&np->lock);
+ return res;
+}
+
+static void get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ regs->version = NATSEMI_REGS_VER;
+ spin_lock_irq(&np->lock);
+ netdev_get_regs(dev, buf);
+ spin_unlock_irq(&np->lock);
+}
+
+static u32 get_msglevel(struct net_device *dev)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ return np->msg_enable;
+}
+
+static void set_msglevel(struct net_device *dev, u32 val)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ np->msg_enable = val;
+}
+
+static int nway_reset(struct net_device *dev)
+{
+ int tmp;
+ int r = -EINVAL;
+ /* if autoneg is off, it's an error */
+ tmp = mdio_read(dev, MII_BMCR);
+ if (tmp & BMCR_ANENABLE) {
+ tmp |= (BMCR_ANRESTART);
+ mdio_write(dev, MII_BMCR, tmp);
+ r = 0;
+ }
+ return r;
+}
+
+static u32 get_link(struct net_device *dev)
+{
+ /* LSTATUS is latched low until a read - so read twice */
+ mdio_read(dev, MII_BMSR);
+ return (mdio_read(dev, MII_BMSR)&BMSR_LSTATUS) ? 1:0;
+}
+
+static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ u8 *eebuf;
+ int res;
+
+ eebuf = kmalloc(np->eeprom_size, GFP_KERNEL);
+ if (!eebuf)
+ return -ENOMEM;
+
+ eeprom->magic = PCI_VENDOR_ID_NS | (PCI_DEVICE_ID_NS_83815<<16);
+ spin_lock_irq(&np->lock);
+ res = netdev_get_eeprom(dev, eebuf);
+ spin_unlock_irq(&np->lock);
+ if (!res)
+ memcpy(data, eebuf+eeprom->offset, eeprom->len);
+ kfree(eebuf);
+ return res;
+}
+
+static const struct ethtool_ops ethtool_ops = {
+ .get_drvinfo = get_drvinfo,
+ .get_regs_len = get_regs_len,
+ .get_eeprom_len = get_eeprom_len,
+ .get_settings = get_settings,
+ .set_settings = set_settings,
+ .get_wol = get_wol,
+ .set_wol = set_wol,
+ .get_regs = get_regs,
+ .get_msglevel = get_msglevel,
+ .set_msglevel = set_msglevel,
+ .nway_reset = nway_reset,
+ .get_link = get_link,
+ .get_eeprom = get_eeprom,
+};
+
+static int netdev_set_wol(struct net_device *dev, u32 newval)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ u32 data = readl(ioaddr + WOLCmd) & ~WakeOptsSummary;
+
+ /* translate to bitmasks this chip understands */
+ if (newval & WAKE_PHY)
+ data |= WakePhy;
+ if (newval & WAKE_UCAST)
+ data |= WakeUnicast;
+ if (newval & WAKE_MCAST)
+ data |= WakeMulticast;
+ if (newval & WAKE_BCAST)
+ data |= WakeBroadcast;
+ if (newval & WAKE_ARP)
+ data |= WakeArp;
+ if (newval & WAKE_MAGIC)
+ data |= WakeMagic;
+ if (np->srr >= SRR_DP83815_D) {
+ if (newval & WAKE_MAGICSECURE) {
+ data |= WakeMagicSecure;
+ }
+ }
+
+ writel(data, ioaddr + WOLCmd);
+
+ return 0;
+}
+
+static int netdev_get_wol(struct net_device *dev, u32 *supported, u32 *cur)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ u32 regval = readl(ioaddr + WOLCmd);
+
+ *supported = (WAKE_PHY | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST
+ | WAKE_ARP | WAKE_MAGIC);
+
+ if (np->srr >= SRR_DP83815_D) {
+ /* SOPASS works on revD and higher */
+ *supported |= WAKE_MAGICSECURE;
+ }
+ *cur = 0;
+
+ /* translate from chip bitmasks */
+ if (regval & WakePhy)
+ *cur |= WAKE_PHY;
+ if (regval & WakeUnicast)
+ *cur |= WAKE_UCAST;
+ if (regval & WakeMulticast)
+ *cur |= WAKE_MCAST;
+ if (regval & WakeBroadcast)
+ *cur |= WAKE_BCAST;
+ if (regval & WakeArp)
+ *cur |= WAKE_ARP;
+ if (regval & WakeMagic)
+ *cur |= WAKE_MAGIC;
+ if (regval & WakeMagicSecure) {
+ /* this can be on in revC, but it's broken */
+ *cur |= WAKE_MAGICSECURE;
+ }
+
+ return 0;
+}
+
+static int netdev_set_sopass(struct net_device *dev, u8 *newval)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ u16 *sval = (u16 *)newval;
+ u32 addr;
+
+ if (np->srr < SRR_DP83815_D) {
+ return 0;
+ }
+
+ /* enable writing to these registers by disabling the RX filter */
+ addr = readl(ioaddr + RxFilterAddr) & ~RFCRAddressMask;
+ addr &= ~RxFilterEnable;
+ writel(addr, ioaddr + RxFilterAddr);
+
+ /* write the three words to (undocumented) RFCR vals 0xa, 0xc, 0xe */
+ writel(addr | 0xa, ioaddr + RxFilterAddr);
+ writew(sval[0], ioaddr + RxFilterData);
+
+ writel(addr | 0xc, ioaddr + RxFilterAddr);
+ writew(sval[1], ioaddr + RxFilterData);
+
+ writel(addr | 0xe, ioaddr + RxFilterAddr);
+ writew(sval[2], ioaddr + RxFilterData);
+
+ /* re-enable the RX filter */
+ writel(addr | RxFilterEnable, ioaddr + RxFilterAddr);
+
+ return 0;
+}
+
+static int netdev_get_sopass(struct net_device *dev, u8 *data)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ u16 *sval = (u16 *)data;
+ u32 addr;
+
+ if (np->srr < SRR_DP83815_D) {
+ sval[0] = sval[1] = sval[2] = 0;
+ return 0;
+ }
+
+ /* read the three words from (undocumented) RFCR vals 0xa, 0xc, 0xe */
+ addr = readl(ioaddr + RxFilterAddr) & ~RFCRAddressMask;
+
+ writel(addr | 0xa, ioaddr + RxFilterAddr);
+ sval[0] = readw(ioaddr + RxFilterData);
+
+ writel(addr | 0xc, ioaddr + RxFilterAddr);
+ sval[1] = readw(ioaddr + RxFilterData);
+
+ writel(addr | 0xe, ioaddr + RxFilterAddr);
+ sval[2] = readw(ioaddr + RxFilterData);
+
+ writel(addr, ioaddr + RxFilterAddr);
+
+ return 0;
+}
+
+static int netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+ struct netdev_private *np = netdev_priv(dev);
+ u32 tmp;
+
+ ecmd->port = dev->if_port;
+ ethtool_cmd_speed_set(ecmd, np->speed);
+ ecmd->duplex = np->duplex;
+ ecmd->autoneg = np->autoneg;
+ ecmd->advertising = 0;
+ if (np->advertising & ADVERTISE_10HALF)
+ ecmd->advertising |= ADVERTISED_10baseT_Half;
+ if (np->advertising & ADVERTISE_10FULL)
+ ecmd->advertising |= ADVERTISED_10baseT_Full;
+ if (np->advertising & ADVERTISE_100HALF)
+ ecmd->advertising |= ADVERTISED_100baseT_Half;
+ if (np->advertising & ADVERTISE_100FULL)
+ ecmd->advertising |= ADVERTISED_100baseT_Full;
+ ecmd->supported = (SUPPORTED_Autoneg |
+ SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
+ SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
+ SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_FIBRE);
+ ecmd->phy_address = np->phy_addr_external;
+ /*
+ * We intentionally report the phy address of the external
+ * phy, even if the internal phy is used. This is necessary
+ * to work around a deficiency of the ethtool interface:
+ * It's only possible to query the settings of the active
+ * port. Therefore
+ * # ethtool -s ethX port mii
+ * actually sends an ioctl to switch to port mii with the
+ * settings that are used for the current active port.
+ * If we would report a different phy address in this
+ * command, then
+ * # ethtool -s ethX port tp;ethtool -s ethX port mii
+ * would unintentionally change the phy address.
+ *
+ * Fortunately the phy address doesn't matter with the
+ * internal phy...
+ */
+
+ /* set information based on active port type */
+ switch (ecmd->port) {
+ default:
+ case PORT_TP:
+ ecmd->advertising |= ADVERTISED_TP;
+ ecmd->transceiver = XCVR_INTERNAL;
+ break;
+ case PORT_MII:
+ ecmd->advertising |= ADVERTISED_MII;
+ ecmd->transceiver = XCVR_EXTERNAL;
+ break;
+ case PORT_FIBRE:
+ ecmd->advertising |= ADVERTISED_FIBRE;
+ ecmd->transceiver = XCVR_EXTERNAL;
+ break;
+ }
+
+ /* if autonegotiation is on, try to return the active speed/duplex */
+ if (ecmd->autoneg == AUTONEG_ENABLE) {
+ ecmd->advertising |= ADVERTISED_Autoneg;
+ tmp = mii_nway_result(
+ np->advertising & mdio_read(dev, MII_LPA));
+ if (tmp == LPA_100FULL || tmp == LPA_100HALF)
+ ethtool_cmd_speed_set(ecmd, SPEED_100);
+ else
+ ethtool_cmd_speed_set(ecmd, SPEED_10);
+ if (tmp == LPA_100FULL || tmp == LPA_10FULL)
+ ecmd->duplex = DUPLEX_FULL;
+ else
+ ecmd->duplex = DUPLEX_HALF;
+ }
+
+ /* ignore maxtxpkt, maxrxpkt for now */
+
+ return 0;
+}
+
+static int netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+ struct netdev_private *np = netdev_priv(dev);
+
+ if (ecmd->port != PORT_TP && ecmd->port != PORT_MII && ecmd->port != PORT_FIBRE)
+ return -EINVAL;
+ if (ecmd->transceiver != XCVR_INTERNAL && ecmd->transceiver != XCVR_EXTERNAL)
+ return -EINVAL;
+ if (ecmd->autoneg == AUTONEG_ENABLE) {
+ if ((ecmd->advertising & (ADVERTISED_10baseT_Half |
+ ADVERTISED_10baseT_Full |
+ ADVERTISED_100baseT_Half |
+ ADVERTISED_100baseT_Full)) == 0) {
+ return -EINVAL;
+ }
+ } else if (ecmd->autoneg == AUTONEG_DISABLE) {
+ u32 speed = ethtool_cmd_speed(ecmd);
+ if (speed != SPEED_10 && speed != SPEED_100)
+ return -EINVAL;
+ if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
+ return -EINVAL;
+ } else {
+ return -EINVAL;
+ }
+
+ /*
+ * If we're ignoring the PHY then autoneg and the internal
+ * transceiver are really not going to work so don't let the
+ * user select them.
+ */
+ if (np->ignore_phy && (ecmd->autoneg == AUTONEG_ENABLE ||
+ ecmd->port == PORT_TP))
+ return -EINVAL;
+
+ /*
+ * maxtxpkt, maxrxpkt: ignored for now.
+ *
+ * transceiver:
+ * PORT_TP is always XCVR_INTERNAL, PORT_MII and PORT_FIBRE are always
+ * XCVR_EXTERNAL. The implementation thus ignores ecmd->transceiver and
+ * selects based on ecmd->port.
+ *
+ * Actually PORT_FIBRE is nearly identical to PORT_MII: it's for fibre
+ * phys that are connected to the mii bus. It's used to apply fibre
+ * specific updates.
+ */
+
+ /* WHEW! now lets bang some bits */
+
+ /* save the parms */
+ dev->if_port = ecmd->port;
+ np->autoneg = ecmd->autoneg;
+ np->phy_addr_external = ecmd->phy_address & PhyAddrMask;
+ if (np->autoneg == AUTONEG_ENABLE) {
+ /* advertise only what has been requested */
+ np->advertising &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
+ if (ecmd->advertising & ADVERTISED_10baseT_Half)
+ np->advertising |= ADVERTISE_10HALF;
+ if (ecmd->advertising & ADVERTISED_10baseT_Full)
+ np->advertising |= ADVERTISE_10FULL;
+ if (ecmd->advertising & ADVERTISED_100baseT_Half)
+ np->advertising |= ADVERTISE_100HALF;
+ if (ecmd->advertising & ADVERTISED_100baseT_Full)
+ np->advertising |= ADVERTISE_100FULL;
+ } else {
+ np->speed = ethtool_cmd_speed(ecmd);
+ np->duplex = ecmd->duplex;
+ /* user overriding the initial full duplex parm? */
+ if (np->duplex == DUPLEX_HALF)
+ np->full_duplex = 0;
+ }
+
+ /* get the right phy enabled */
+ if (ecmd->port == PORT_TP)
+ switch_port_internal(dev);
+ else
+ switch_port_external(dev);
+
+ /* set parms and see how this affected our link status */
+ init_phy_fixup(dev);
+ check_link(dev);
+ return 0;
+}
+
+static int netdev_get_regs(struct net_device *dev, u8 *buf)
+{
+ int i;
+ int j;
+ u32 rfcr;
+ u32 *rbuf = (u32 *)buf;
+ void __iomem * ioaddr = ns_ioaddr(dev);
+
+ /* read non-mii page 0 of registers */
+ for (i = 0; i < NATSEMI_PG0_NREGS/2; i++) {
+ rbuf[i] = readl(ioaddr + i*4);
+ }
+
+ /* read current mii registers */
+ for (i = NATSEMI_PG0_NREGS/2; i < NATSEMI_PG0_NREGS; i++)
+ rbuf[i] = mdio_read(dev, i & 0x1f);
+
+ /* read only the 'magic' registers from page 1 */
+ writew(1, ioaddr + PGSEL);
+ rbuf[i++] = readw(ioaddr + PMDCSR);
+ rbuf[i++] = readw(ioaddr + TSTDAT);
+ rbuf[i++] = readw(ioaddr + DSPCFG);
+ rbuf[i++] = readw(ioaddr + SDCFG);
+ writew(0, ioaddr + PGSEL);
+
+ /* read RFCR indexed registers */
+ rfcr = readl(ioaddr + RxFilterAddr);
+ for (j = 0; j < NATSEMI_RFDR_NREGS; j++) {
+ writel(j*2, ioaddr + RxFilterAddr);
+ rbuf[i++] = readw(ioaddr + RxFilterData);
+ }
+ writel(rfcr, ioaddr + RxFilterAddr);
+
+ /* the interrupt status is clear-on-read - see if we missed any */
+ if (rbuf[4] & rbuf[5]) {
+ printk(KERN_WARNING
+ "%s: shoot, we dropped an interrupt (%#08x)\n",
+ dev->name, rbuf[4] & rbuf[5]);
+ }
+
+ return 0;
+}
+
+#define SWAP_BITS(x) ( (((x) & 0x0001) << 15) | (((x) & 0x0002) << 13) \
+ | (((x) & 0x0004) << 11) | (((x) & 0x0008) << 9) \
+ | (((x) & 0x0010) << 7) | (((x) & 0x0020) << 5) \
+ | (((x) & 0x0040) << 3) | (((x) & 0x0080) << 1) \
+ | (((x) & 0x0100) >> 1) | (((x) & 0x0200) >> 3) \
+ | (((x) & 0x0400) >> 5) | (((x) & 0x0800) >> 7) \
+ | (((x) & 0x1000) >> 9) | (((x) & 0x2000) >> 11) \
+ | (((x) & 0x4000) >> 13) | (((x) & 0x8000) >> 15) )
+
+static int netdev_get_eeprom(struct net_device *dev, u8 *buf)
+{
+ int i;
+ u16 *ebuf = (u16 *)buf;
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ struct netdev_private *np = netdev_priv(dev);
+
+ /* eeprom_read reads 16 bits, and indexes by 16 bits */
+ for (i = 0; i < np->eeprom_size/2; i++) {
+ ebuf[i] = eeprom_read(ioaddr, i);
+ /* The EEPROM itself stores data bit-swapped, but eeprom_read
+ * reads it back "sanely". So we swap it back here in order to
+ * present it to userland as it is stored. */
+ ebuf[i] = SWAP_BITS(ebuf[i]);
+ }
+ return 0;
+}
+
+static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct mii_ioctl_data *data = if_mii(rq);
+ struct netdev_private *np = netdev_priv(dev);
+
+ switch(cmd) {
+ case SIOCGMIIPHY: /* Get address of MII PHY in use. */
+ data->phy_id = np->phy_addr_external;
+ /* Fall Through */
+
+ case SIOCGMIIREG: /* Read MII PHY register. */
+ /* The phy_id is not enough to uniquely identify
+ * the intended target. Therefore the command is sent to
+ * the given mii on the current port.
+ */
+ if (dev->if_port == PORT_TP) {
+ if ((data->phy_id & 0x1f) == np->phy_addr_external)
+ data->val_out = mdio_read(dev,
+ data->reg_num & 0x1f);
+ else
+ data->val_out = 0;
+ } else {
+ move_int_phy(dev, data->phy_id & 0x1f);
+ data->val_out = miiport_read(dev, data->phy_id & 0x1f,
+ data->reg_num & 0x1f);
+ }
+ return 0;
+
+ case SIOCSMIIREG: /* Write MII PHY register. */
+ if (dev->if_port == PORT_TP) {
+ if ((data->phy_id & 0x1f) == np->phy_addr_external) {
+ if ((data->reg_num & 0x1f) == MII_ADVERTISE)
+ np->advertising = data->val_in;
+ mdio_write(dev, data->reg_num & 0x1f,
+ data->val_in);
+ }
+ } else {
+ if ((data->phy_id & 0x1f) == np->phy_addr_external) {
+ if ((data->reg_num & 0x1f) == MII_ADVERTISE)
+ np->advertising = data->val_in;
+ }
+ move_int_phy(dev, data->phy_id & 0x1f);
+ miiport_write(dev, data->phy_id & 0x1f,
+ data->reg_num & 0x1f,
+ data->val_in);
+ }
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void enable_wol_mode(struct net_device *dev, int enable_intr)
+{
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ struct netdev_private *np = netdev_priv(dev);
+
+ if (netif_msg_wol(np))
+ printk(KERN_INFO "%s: remaining active for wake-on-lan\n",
+ dev->name);
+
+ /* For WOL we must restart the rx process in silent mode.
+ * Write NULL to the RxRingPtr. Only possible if
+ * rx process is stopped
+ */
+ writel(0, ioaddr + RxRingPtr);
+
+ /* read WoL status to clear */
+ readl(ioaddr + WOLCmd);
+
+ /* PME on, clear status */
+ writel(np->SavedClkRun | PMEEnable | PMEStatus, ioaddr + ClkRun);
+
+ /* and restart the rx process */
+ writel(RxOn, ioaddr + ChipCmd);
+
+ if (enable_intr) {
+ /* enable the WOL interrupt.
+ * Could be used to send a netlink message.
+ */
+ writel(WOLPkt | LinkChange, ioaddr + IntrMask);
+ natsemi_irq_enable(dev);
+ }
+}
+
+static int netdev_close(struct net_device *dev)
+{
+ void __iomem * ioaddr = ns_ioaddr(dev);
+ struct netdev_private *np = netdev_priv(dev);
+
+ if (netif_msg_ifdown(np))
+ printk(KERN_DEBUG
+ "%s: Shutting down ethercard, status was %#04x.\n",
+ dev->name, (int)readl(ioaddr + ChipCmd));
+ if (netif_msg_pktdata(np))
+ printk(KERN_DEBUG
+ "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n",
+ dev->name, np->cur_tx, np->dirty_tx,
+ np->cur_rx, np->dirty_rx);
+
+ napi_disable(&np->napi);
+
+ /*
+ * FIXME: what if someone tries to close a device
+ * that is suspended?
+ * Should we reenable the nic to switch to
+ * the final WOL settings?
+ */
+
+ del_timer_sync(&np->timer);
+ disable_irq(dev->irq);
+ spin_lock_irq(&np->lock);
+ natsemi_irq_disable(dev);
+ np->hands_off = 1;
+ spin_unlock_irq(&np->lock);
+ enable_irq(dev->irq);
+
+ free_irq(dev->irq, dev);
+
+ /* Interrupt disabled, interrupt handler released,
+ * queue stopped, timer deleted, rtnl_lock held
+ * All async codepaths that access the driver are disabled.
+ */
+ spin_lock_irq(&np->lock);
+ np->hands_off = 0;
+ readl(ioaddr + IntrMask);
+ readw(ioaddr + MIntrStatus);
+
+ /* Freeze Stats */
+ writel(StatsFreeze, ioaddr + StatsCtrl);
+
+ /* Stop the chip's Tx and Rx processes. */
+ natsemi_stop_rxtx(dev);
+
+ __get_stats(dev);
+ spin_unlock_irq(&np->lock);
+
+ /* clear the carrier last - an interrupt could reenable it otherwise */
+ netif_carrier_off(dev);
+ netif_stop_queue(dev);
+
+ dump_ring(dev);
+ drain_ring(dev);
+ free_ring(dev);
+
+ {
+ u32 wol = readl(ioaddr + WOLCmd) & WakeOptsSummary;
+ if (wol) {
+ /* restart the NIC in WOL mode.
+ * The nic must be stopped for this.
+ */
+ enable_wol_mode(dev, 0);
+ } else {
+ /* Restore PME enable bit unmolested */
+ writel(np->SavedClkRun, ioaddr + ClkRun);
+ }
+ }
+ return 0;
+}
+
+
+static void __devexit natsemi_remove1 (struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+
+ NATSEMI_REMOVE_FILE(pdev, dspcfg_workaround);
+ unregister_netdev (dev);
+ pci_release_regions (pdev);
+ iounmap(ioaddr);
+ free_netdev (dev);
+ pci_set_drvdata(pdev, NULL);
+}
+
+#ifdef CONFIG_PM
+
+/*
+ * The ns83815 chip doesn't have explicit RxStop bits.
+ * Kicking the Rx or Tx process for a new packet reenables the Rx process
+ * of the nic, thus this function must be very careful:
+ *
+ * suspend/resume synchronization:
+ * entry points:
+ * netdev_open, netdev_close, netdev_ioctl, set_rx_mode, intr_handler,
+ * start_tx, ns_tx_timeout
+ *
+ * No function accesses the hardware without checking np->hands_off.
+ * the check occurs under spin_lock_irq(&np->lock);
+ * exceptions:
+ * * netdev_ioctl: noncritical access.
+ * * netdev_open: cannot happen due to the device_detach
+ * * netdev_close: doesn't hurt.
+ * * netdev_timer: timer stopped by natsemi_suspend.
+ * * intr_handler: doesn't acquire the spinlock. suspend calls
+ * disable_irq() to enforce synchronization.
+ * * natsemi_poll: checks before reenabling interrupts. suspend
+ * sets hands_off, disables interrupts and then waits with
+ * napi_disable().
+ *
+ * Interrupts must be disabled, otherwise hands_off can cause irq storms.
+ */
+
+static int natsemi_suspend (struct pci_dev *pdev, pm_message_t state)
+{
+ struct net_device *dev = pci_get_drvdata (pdev);
+ struct netdev_private *np = netdev_priv(dev);
+ void __iomem * ioaddr = ns_ioaddr(dev);
+
+ rtnl_lock();
+ if (netif_running (dev)) {
+ del_timer_sync(&np->timer);
+
+ disable_irq(dev->irq);
+ spin_lock_irq(&np->lock);
+
+ natsemi_irq_disable(dev);
+ np->hands_off = 1;
+ natsemi_stop_rxtx(dev);
+ netif_stop_queue(dev);
+
+ spin_unlock_irq(&np->lock);
+ enable_irq(dev->irq);
+
+ napi_disable(&np->napi);
+
+ /* Update the error counts. */
+ __get_stats(dev);
+
+ /* pci_power_off(pdev, -1); */
+ drain_ring(dev);
+ {
+ u32 wol = readl(ioaddr + WOLCmd) & WakeOptsSummary;
+ /* Restore PME enable bit */
+ if (wol) {
+ /* restart the NIC in WOL mode.
+ * The nic must be stopped for this.
+ * FIXME: use the WOL interrupt
+ */
+ enable_wol_mode(dev, 0);
+ } else {
+ /* Restore PME enable bit unmolested */
+ writel(np->SavedClkRun, ioaddr + ClkRun);
+ }
+ }
+ }
+ netif_device_detach(dev);
+ rtnl_unlock();
+ return 0;
+}
+
+
+static int natsemi_resume (struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata (pdev);
+ struct netdev_private *np = netdev_priv(dev);
+ int ret = 0;
+
+ rtnl_lock();
+ if (netif_device_present(dev))
+ goto out;
+ if (netif_running(dev)) {
+ BUG_ON(!np->hands_off);
+ ret = pci_enable_device(pdev);
+ if (ret < 0) {
+ dev_err(&pdev->dev,
+ "pci_enable_device() failed: %d\n", ret);
+ goto out;
+ }
+ /* pci_power_on(pdev); */
+
+ napi_enable(&np->napi);
+
+ natsemi_reset(dev);
+ init_ring(dev);
+ disable_irq(dev->irq);
+ spin_lock_irq(&np->lock);
+ np->hands_off = 0;
+ init_registers(dev);
+ netif_device_attach(dev);
+ spin_unlock_irq(&np->lock);
+ enable_irq(dev->irq);
+
+ mod_timer(&np->timer, round_jiffies(jiffies + 1*HZ));
+ }
+ netif_device_attach(dev);
+out:
+ rtnl_unlock();
+ return ret;
+}
+
+#endif /* CONFIG_PM */
+
+static struct pci_driver natsemi_driver = {
+ .name = DRV_NAME,
+ .id_table = natsemi_pci_tbl,
+ .probe = natsemi_probe1,
+ .remove = __devexit_p(natsemi_remove1),
+#ifdef CONFIG_PM
+ .suspend = natsemi_suspend,
+ .resume = natsemi_resume,
+#endif
+};
+
+static int __init natsemi_init_mod (void)
+{
+/* when a module, this is printed whether or not devices are found in probe */
+#ifdef MODULE
+ printk(version);
+#endif
+
+ return pci_register_driver(&natsemi_driver);
+}
+
+static void __exit natsemi_exit_mod (void)
+{
+ pci_unregister_driver (&natsemi_driver);
+}
+
+module_init(natsemi_init_mod);
+module_exit(natsemi_exit_mod);
+
--- /dev/null
+#define VERSION "0.23"
+/* ns83820.c by Benjamin LaHaise with contributions.
+ *
+ * Questions/comments/discussion to linux-ns83820@kvack.org.
+ *
+ * $Revision: 1.34.2.23 $
+ *
+ * Copyright 2001 Benjamin LaHaise.
+ * Copyright 2001, 2002 Red Hat.
+ *
+ * Mmmm, chocolate vanilla mocha...
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *
+ * ChangeLog
+ * =========
+ * 20010414 0.1 - created
+ * 20010622 0.2 - basic rx and tx.
+ * 20010711 0.3 - added duplex and link state detection support.
+ * 20010713 0.4 - zero copy, no hangs.
+ * 0.5 - 64 bit dma support (davem will hate me for this)
+ * - disable jumbo frames to avoid tx hangs
+ * - work around tx deadlocks on my 1.02 card via
+ * fiddling with TXCFG
+ * 20010810 0.6 - use pci dma api for ringbuffers, work on ia64
+ * 20010816 0.7 - misc cleanups
+ * 20010826 0.8 - fix critical zero copy bugs
+ * 0.9 - internal experiment
+ * 20010827 0.10 - fix ia64 unaligned access.
+ * 20010906 0.11 - accept all packets with checksum errors as
+ * otherwise fragments get lost
+ * - fix >> 32 bugs
+ * 0.12 - add statistics counters
+ * - add allmulti/promisc support
+ * 20011009 0.13 - hotplug support, other smaller pci api cleanups
+ * 20011204 0.13a - optical transceiver support added
+ * by Michael Clark <michael@metaparadigm.com>
+ * 20011205 0.13b - call register_netdev earlier in initialization
+ * suppress duplicate link status messages
+ * 20011117 0.14 - ethtool GDRVINFO, GLINK support from jgarzik
+ * 20011204 0.15 get ppc (big endian) working
+ * 20011218 0.16 various cleanups
+ * 20020310 0.17 speedups
+ * 20020610 0.18 - actually use the pci dma api for highmem
+ * - remove pci latency register fiddling
+ * 0.19 - better bist support
+ * - add ihr and reset_phy parameters
+ * - gmii bus probing
+ * - fix missed txok introduced during performance
+ * tuning
+ * 0.20 - fix stupid RFEN thinko. i am such a smurf.
+ * 20040828 0.21 - add hardware vlan accleration
+ * by Neil Horman <nhorman@redhat.com>
+ * 20050406 0.22 - improved DAC ifdefs from Andi Kleen
+ * - removal of dead code from Adrian Bunk
+ * - fix half duplex collision behaviour
+ * Driver Overview
+ * ===============
+ *
+ * This driver was originally written for the National Semiconductor
+ * 83820 chip, a 10/100/1000 Mbps 64 bit PCI ethernet NIC. Hopefully
+ * this code will turn out to be a) clean, b) correct, and c) fast.
+ * With that in mind, I'm aiming to split the code up as much as
+ * reasonably possible. At present there are X major sections that
+ * break down into a) packet receive, b) packet transmit, c) link
+ * management, d) initialization and configuration. Where possible,
+ * these code paths are designed to run in parallel.
+ *
+ * This driver has been tested and found to work with the following
+ * cards (in no particular order):
+ *
+ * Cameo SOHO-GA2000T SOHO-GA2500T
+ * D-Link DGE-500T
+ * PureData PDP8023Z-TG
+ * SMC SMC9452TX SMC9462TX
+ * Netgear GA621
+ *
+ * Special thanks to SMC for providing hardware to test this driver on.
+ *
+ * Reports of success or failure would be greatly appreciated.
+ */
+//#define dprintk printk
+#define dprintk(x...) do { } while (0)
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/workqueue.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ip.h> /* for iph */
+#include <linux/in.h> /* for IPPROTO_... */
+#include <linux/compiler.h>
+#include <linux/prefetch.h>
+#include <linux/ethtool.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/if_vlan.h>
+#include <linux/rtnetlink.h>
+#include <linux/jiffies.h>
+#include <linux/slab.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#define DRV_NAME "ns83820"
+
+/* Global parameters. See module_param near the bottom. */
+static int ihr = 2;
+static int reset_phy = 0;
+static int lnksts = 0; /* CFG_LNKSTS bit polarity */
+
+/* Dprintk is used for more interesting debug events */
+#undef Dprintk
+#define Dprintk dprintk
+
+/* tunables */
+#define RX_BUF_SIZE 1500 /* 8192 */
+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
+#define NS83820_VLAN_ACCEL_SUPPORT
+#endif
+
+/* Must not exceed ~65000. */
+#define NR_RX_DESC 64
+#define NR_TX_DESC 128
+
+/* not tunable */
+#define REAL_RX_BUF_SIZE (RX_BUF_SIZE + 14) /* rx/tx mac addr + type */
+
+#define MIN_TX_DESC_FREE 8
+
+/* register defines */
+#define CFGCS 0x04
+
+#define CR_TXE 0x00000001
+#define CR_TXD 0x00000002
+/* Ramit : Here's a tip, don't do a RXD immediately followed by an RXE
+ * The Receive engine skips one descriptor and moves
+ * onto the next one!! */
+#define CR_RXE 0x00000004
+#define CR_RXD 0x00000008
+#define CR_TXR 0x00000010
+#define CR_RXR 0x00000020
+#define CR_SWI 0x00000080
+#define CR_RST 0x00000100
+
+#define PTSCR_EEBIST_FAIL 0x00000001
+#define PTSCR_EEBIST_EN 0x00000002
+#define PTSCR_EELOAD_EN 0x00000004
+#define PTSCR_RBIST_FAIL 0x000001b8
+#define PTSCR_RBIST_DONE 0x00000200
+#define PTSCR_RBIST_EN 0x00000400
+#define PTSCR_RBIST_RST 0x00002000
+
+#define MEAR_EEDI 0x00000001
+#define MEAR_EEDO 0x00000002
+#define MEAR_EECLK 0x00000004
+#define MEAR_EESEL 0x00000008
+#define MEAR_MDIO 0x00000010
+#define MEAR_MDDIR 0x00000020
+#define MEAR_MDC 0x00000040
+
+#define ISR_TXDESC3 0x40000000
+#define ISR_TXDESC2 0x20000000
+#define ISR_TXDESC1 0x10000000
+#define ISR_TXDESC0 0x08000000
+#define ISR_RXDESC3 0x04000000
+#define ISR_RXDESC2 0x02000000
+#define ISR_RXDESC1 0x01000000
+#define ISR_RXDESC0 0x00800000
+#define ISR_TXRCMP 0x00400000
+#define ISR_RXRCMP 0x00200000
+#define ISR_DPERR 0x00100000
+#define ISR_SSERR 0x00080000
+#define ISR_RMABT 0x00040000
+#define ISR_RTABT 0x00020000
+#define ISR_RXSOVR 0x00010000
+#define ISR_HIBINT 0x00008000
+#define ISR_PHY 0x00004000
+#define ISR_PME 0x00002000
+#define ISR_SWI 0x00001000
+#define ISR_MIB 0x00000800
+#define ISR_TXURN 0x00000400
+#define ISR_TXIDLE 0x00000200
+#define ISR_TXERR 0x00000100
+#define ISR_TXDESC 0x00000080
+#define ISR_TXOK 0x00000040
+#define ISR_RXORN 0x00000020
+#define ISR_RXIDLE 0x00000010
+#define ISR_RXEARLY 0x00000008
+#define ISR_RXERR 0x00000004
+#define ISR_RXDESC 0x00000002
+#define ISR_RXOK 0x00000001
+
+#define TXCFG_CSI 0x80000000
+#define TXCFG_HBI 0x40000000
+#define TXCFG_MLB 0x20000000
+#define TXCFG_ATP 0x10000000
+#define TXCFG_ECRETRY 0x00800000
+#define TXCFG_BRST_DIS 0x00080000
+#define TXCFG_MXDMA1024 0x00000000
+#define TXCFG_MXDMA512 0x00700000
+#define TXCFG_MXDMA256 0x00600000
+#define TXCFG_MXDMA128 0x00500000
+#define TXCFG_MXDMA64 0x00400000
+#define TXCFG_MXDMA32 0x00300000
+#define TXCFG_MXDMA16 0x00200000
+#define TXCFG_MXDMA8 0x00100000
+
+#define CFG_LNKSTS 0x80000000
+#define CFG_SPDSTS 0x60000000
+#define CFG_SPDSTS1 0x40000000
+#define CFG_SPDSTS0 0x20000000
+#define CFG_DUPSTS 0x10000000
+#define CFG_TBI_EN 0x01000000
+#define CFG_MODE_1000 0x00400000
+/* Ramit : Dont' ever use AUTO_1000, it never works and is buggy.
+ * Read the Phy response and then configure the MAC accordingly */
+#define CFG_AUTO_1000 0x00200000
+#define CFG_PINT_CTL 0x001c0000
+#define CFG_PINT_DUPSTS 0x00100000
+#define CFG_PINT_LNKSTS 0x00080000
+#define CFG_PINT_SPDSTS 0x00040000
+#define CFG_TMRTEST 0x00020000
+#define CFG_MRM_DIS 0x00010000
+#define CFG_MWI_DIS 0x00008000
+#define CFG_T64ADDR 0x00004000
+#define CFG_PCI64_DET 0x00002000
+#define CFG_DATA64_EN 0x00001000
+#define CFG_M64ADDR 0x00000800
+#define CFG_PHY_RST 0x00000400
+#define CFG_PHY_DIS 0x00000200
+#define CFG_EXTSTS_EN 0x00000100
+#define CFG_REQALG 0x00000080
+#define CFG_SB 0x00000040
+#define CFG_POW 0x00000020
+#define CFG_EXD 0x00000010
+#define CFG_PESEL 0x00000008
+#define CFG_BROM_DIS 0x00000004
+#define CFG_EXT_125 0x00000002
+#define CFG_BEM 0x00000001
+
+#define EXTSTS_UDPPKT 0x00200000
+#define EXTSTS_TCPPKT 0x00080000
+#define EXTSTS_IPPKT 0x00020000
+#define EXTSTS_VPKT 0x00010000
+#define EXTSTS_VTG_MASK 0x0000ffff
+
+#define SPDSTS_POLARITY (CFG_SPDSTS1 | CFG_SPDSTS0 | CFG_DUPSTS | (lnksts ? CFG_LNKSTS : 0))
+
+#define MIBC_MIBS 0x00000008
+#define MIBC_ACLR 0x00000004
+#define MIBC_FRZ 0x00000002
+#define MIBC_WRN 0x00000001
+
+#define PCR_PSEN (1 << 31)
+#define PCR_PS_MCAST (1 << 30)
+#define PCR_PS_DA (1 << 29)
+#define PCR_STHI_8 (3 << 23)
+#define PCR_STLO_4 (1 << 23)
+#define PCR_FFHI_8K (3 << 21)
+#define PCR_FFLO_4K (1 << 21)
+#define PCR_PAUSE_CNT 0xFFFE
+
+#define RXCFG_AEP 0x80000000
+#define RXCFG_ARP 0x40000000
+#define RXCFG_STRIPCRC 0x20000000
+#define RXCFG_RX_FD 0x10000000
+#define RXCFG_ALP 0x08000000
+#define RXCFG_AIRL 0x04000000
+#define RXCFG_MXDMA512 0x00700000
+#define RXCFG_DRTH 0x0000003e
+#define RXCFG_DRTH0 0x00000002
+
+#define RFCR_RFEN 0x80000000
+#define RFCR_AAB 0x40000000
+#define RFCR_AAM 0x20000000
+#define RFCR_AAU 0x10000000
+#define RFCR_APM 0x08000000
+#define RFCR_APAT 0x07800000
+#define RFCR_APAT3 0x04000000
+#define RFCR_APAT2 0x02000000
+#define RFCR_APAT1 0x01000000
+#define RFCR_APAT0 0x00800000
+#define RFCR_AARP 0x00400000
+#define RFCR_MHEN 0x00200000
+#define RFCR_UHEN 0x00100000
+#define RFCR_ULM 0x00080000
+
+#define VRCR_RUDPE 0x00000080
+#define VRCR_RTCPE 0x00000040
+#define VRCR_RIPE 0x00000020
+#define VRCR_IPEN 0x00000010
+#define VRCR_DUTF 0x00000008
+#define VRCR_DVTF 0x00000004
+#define VRCR_VTREN 0x00000002
+#define VRCR_VTDEN 0x00000001
+
+#define VTCR_PPCHK 0x00000008
+#define VTCR_GCHK 0x00000004
+#define VTCR_VPPTI 0x00000002
+#define VTCR_VGTI 0x00000001
+
+#define CR 0x00
+#define CFG 0x04
+#define MEAR 0x08
+#define PTSCR 0x0c
+#define ISR 0x10
+#define IMR 0x14
+#define IER 0x18
+#define IHR 0x1c
+#define TXDP 0x20
+#define TXDP_HI 0x24
+#define TXCFG 0x28
+#define GPIOR 0x2c
+#define RXDP 0x30
+#define RXDP_HI 0x34
+#define RXCFG 0x38
+#define PQCR 0x3c
+#define WCSR 0x40
+#define PCR 0x44
+#define RFCR 0x48
+#define RFDR 0x4c
+
+#define SRR 0x58
+
+#define VRCR 0xbc
+#define VTCR 0xc0
+#define VDR 0xc4
+#define CCSR 0xcc
+
+#define TBICR 0xe0
+#define TBISR 0xe4
+#define TANAR 0xe8
+#define TANLPAR 0xec
+#define TANER 0xf0
+#define TESR 0xf4
+
+#define TBICR_MR_AN_ENABLE 0x00001000
+#define TBICR_MR_RESTART_AN 0x00000200
+
+#define TBISR_MR_LINK_STATUS 0x00000020
+#define TBISR_MR_AN_COMPLETE 0x00000004
+
+#define TANAR_PS2 0x00000100
+#define TANAR_PS1 0x00000080
+#define TANAR_HALF_DUP 0x00000040
+#define TANAR_FULL_DUP 0x00000020
+
+#define GPIOR_GP5_OE 0x00000200
+#define GPIOR_GP4_OE 0x00000100
+#define GPIOR_GP3_OE 0x00000080
+#define GPIOR_GP2_OE 0x00000040
+#define GPIOR_GP1_OE 0x00000020
+#define GPIOR_GP3_OUT 0x00000004
+#define GPIOR_GP1_OUT 0x00000001
+
+#define LINK_AUTONEGOTIATE 0x01
+#define LINK_DOWN 0x02
+#define LINK_UP 0x04
+
+#define HW_ADDR_LEN sizeof(dma_addr_t)
+#define desc_addr_set(desc, addr) \
+ do { \
+ ((desc)[0] = cpu_to_le32(addr)); \
+ if (HW_ADDR_LEN == 8) \
+ (desc)[1] = cpu_to_le32(((u64)addr) >> 32); \
+ } while(0)
+#define desc_addr_get(desc) \
+ (le32_to_cpu((desc)[0]) | \
+ (HW_ADDR_LEN == 8 ? ((dma_addr_t)le32_to_cpu((desc)[1]))<<32 : 0))
+
+#define DESC_LINK 0
+#define DESC_BUFPTR (DESC_LINK + HW_ADDR_LEN/4)
+#define DESC_CMDSTS (DESC_BUFPTR + HW_ADDR_LEN/4)
+#define DESC_EXTSTS (DESC_CMDSTS + 4/4)
+
+#define CMDSTS_OWN 0x80000000
+#define CMDSTS_MORE 0x40000000
+#define CMDSTS_INTR 0x20000000
+#define CMDSTS_ERR 0x10000000
+#define CMDSTS_OK 0x08000000
+#define CMDSTS_RUNT 0x00200000
+#define CMDSTS_LEN_MASK 0x0000ffff
+
+#define CMDSTS_DEST_MASK 0x01800000
+#define CMDSTS_DEST_SELF 0x00800000
+#define CMDSTS_DEST_MULTI 0x01000000
+
+#define DESC_SIZE 8 /* Should be cache line sized */
+
+struct rx_info {
+ spinlock_t lock;
+ int up;
+ unsigned long idle;
+
+ struct sk_buff *skbs[NR_RX_DESC];
+
+ __le32 *next_rx_desc;
+ u16 next_rx, next_empty;
+
+ __le32 *descs;
+ dma_addr_t phy_descs;
+};
+
+
+struct ns83820 {
+ u8 __iomem *base;
+
+ struct pci_dev *pci_dev;
+ struct net_device *ndev;
+
+ struct rx_info rx_info;
+ struct tasklet_struct rx_tasklet;
+
+ unsigned ihr;
+ struct work_struct tq_refill;
+
+ /* protects everything below. irqsave when using. */
+ spinlock_t misc_lock;
+
+ u32 CFG_cache;
+
+ u32 MEAR_cache;
+ u32 IMR_cache;
+
+ unsigned linkstate;
+
+ spinlock_t tx_lock;
+
+ u16 tx_done_idx;
+ u16 tx_idx;
+ volatile u16 tx_free_idx; /* idx of free desc chain */
+ u16 tx_intr_idx;
+
+ atomic_t nr_tx_skbs;
+ struct sk_buff *tx_skbs[NR_TX_DESC];
+
+ char pad[16] __attribute__((aligned(16)));
+ __le32 *tx_descs;
+ dma_addr_t tx_phy_descs;
+
+ struct timer_list tx_watchdog;
+};
+
+static inline struct ns83820 *PRIV(struct net_device *dev)
+{
+ return netdev_priv(dev);
+}
+
+#define __kick_rx(dev) writel(CR_RXE, dev->base + CR)
+
+static inline void kick_rx(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ dprintk("kick_rx: maybe kicking\n");
+ if (test_and_clear_bit(0, &dev->rx_info.idle)) {
+ dprintk("actually kicking\n");
+ writel(dev->rx_info.phy_descs +
+ (4 * DESC_SIZE * dev->rx_info.next_rx),
+ dev->base + RXDP);
+ if (dev->rx_info.next_rx == dev->rx_info.next_empty)
+ printk(KERN_DEBUG "%s: uh-oh: next_rx == next_empty???\n",
+ ndev->name);
+ __kick_rx(dev);
+ }
+}
+
+//free = (tx_done_idx + NR_TX_DESC-2 - free_idx) % NR_TX_DESC
+#define start_tx_okay(dev) \
+ (((NR_TX_DESC-2 + dev->tx_done_idx - dev->tx_free_idx) % NR_TX_DESC) > MIN_TX_DESC_FREE)
+
+/* Packet Receiver
+ *
+ * The hardware supports linked lists of receive descriptors for
+ * which ownership is transferred back and forth by means of an
+ * ownership bit. While the hardware does support the use of a
+ * ring for receive descriptors, we only make use of a chain in
+ * an attempt to reduce bus traffic under heavy load scenarios.
+ * This will also make bugs a bit more obvious. The current code
+ * only makes use of a single rx chain; I hope to implement
+ * priority based rx for version 1.0. Goal: even under overload
+ * conditions, still route realtime traffic with as low jitter as
+ * possible.
+ */
+static inline void build_rx_desc(struct ns83820 *dev, __le32 *desc, dma_addr_t link, dma_addr_t buf, u32 cmdsts, u32 extsts)
+{
+ desc_addr_set(desc + DESC_LINK, link);
+ desc_addr_set(desc + DESC_BUFPTR, buf);
+ desc[DESC_EXTSTS] = cpu_to_le32(extsts);
+ mb();
+ desc[DESC_CMDSTS] = cpu_to_le32(cmdsts);
+}
+
+#define nr_rx_empty(dev) ((NR_RX_DESC-2 + dev->rx_info.next_rx - dev->rx_info.next_empty) % NR_RX_DESC)
+static inline int ns83820_add_rx_skb(struct ns83820 *dev, struct sk_buff *skb)
+{
+ unsigned next_empty;
+ u32 cmdsts;
+ __le32 *sg;
+ dma_addr_t buf;
+
+ next_empty = dev->rx_info.next_empty;
+
+ /* don't overrun last rx marker */
+ if (unlikely(nr_rx_empty(dev) <= 2)) {
+ kfree_skb(skb);
+ return 1;
+ }
+
+#if 0
+ dprintk("next_empty[%d] nr_used[%d] next_rx[%d]\n",
+ dev->rx_info.next_empty,
+ dev->rx_info.nr_used,
+ dev->rx_info.next_rx
+ );
+#endif
+
+ sg = dev->rx_info.descs + (next_empty * DESC_SIZE);
+ BUG_ON(NULL != dev->rx_info.skbs[next_empty]);
+ dev->rx_info.skbs[next_empty] = skb;
+
+ dev->rx_info.next_empty = (next_empty + 1) % NR_RX_DESC;
+ cmdsts = REAL_RX_BUF_SIZE | CMDSTS_INTR;
+ buf = pci_map_single(dev->pci_dev, skb->data,
+ REAL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ build_rx_desc(dev, sg, 0, buf, cmdsts, 0);
+ /* update link of previous rx */
+ if (likely(next_empty != dev->rx_info.next_rx))
+ dev->rx_info.descs[((NR_RX_DESC + next_empty - 1) % NR_RX_DESC) * DESC_SIZE] = cpu_to_le32(dev->rx_info.phy_descs + (next_empty * DESC_SIZE * 4));
+
+ return 0;
+}
+
+static inline int rx_refill(struct net_device *ndev, gfp_t gfp)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ unsigned i;
+ unsigned long flags = 0;
+
+ if (unlikely(nr_rx_empty(dev) <= 2))
+ return 0;
+
+ dprintk("rx_refill(%p)\n", ndev);
+ if (gfp == GFP_ATOMIC)
+ spin_lock_irqsave(&dev->rx_info.lock, flags);
+ for (i=0; i<NR_RX_DESC; i++) {
+ struct sk_buff *skb;
+ long res;
+
+ /* extra 16 bytes for alignment */
+ skb = __netdev_alloc_skb(ndev, REAL_RX_BUF_SIZE+16, gfp);
+ if (unlikely(!skb))
+ break;
+
+ skb_reserve(skb, skb->data - PTR_ALIGN(skb->data, 16));
+ if (gfp != GFP_ATOMIC)
+ spin_lock_irqsave(&dev->rx_info.lock, flags);
+ res = ns83820_add_rx_skb(dev, skb);
+ if (gfp != GFP_ATOMIC)
+ spin_unlock_irqrestore(&dev->rx_info.lock, flags);
+ if (res) {
+ i = 1;
+ break;
+ }
+ }
+ if (gfp == GFP_ATOMIC)
+ spin_unlock_irqrestore(&dev->rx_info.lock, flags);
+
+ return i ? 0 : -ENOMEM;
+}
+
+static void rx_refill_atomic(struct net_device *ndev)
+{
+ rx_refill(ndev, GFP_ATOMIC);
+}
+
+/* REFILL */
+static inline void queue_refill(struct work_struct *work)
+{
+ struct ns83820 *dev = container_of(work, struct ns83820, tq_refill);
+ struct net_device *ndev = dev->ndev;
+
+ rx_refill(ndev, GFP_KERNEL);
+ if (dev->rx_info.up)
+ kick_rx(ndev);
+}
+
+static inline void clear_rx_desc(struct ns83820 *dev, unsigned i)
+{
+ build_rx_desc(dev, dev->rx_info.descs + (DESC_SIZE * i), 0, 0, CMDSTS_OWN, 0);
+}
+
+static void phy_intr(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ static const char *speeds[] = { "10", "100", "1000", "1000(?)", "1000F" };
+ u32 cfg, new_cfg;
+ u32 tbisr, tanar, tanlpar;
+ int speed, fullduplex, newlinkstate;
+
+ cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
+
+ if (dev->CFG_cache & CFG_TBI_EN) {
+ /* we have an optical transceiver */
+ tbisr = readl(dev->base + TBISR);
+ tanar = readl(dev->base + TANAR);
+ tanlpar = readl(dev->base + TANLPAR);
+ dprintk("phy_intr: tbisr=%08x, tanar=%08x, tanlpar=%08x\n",
+ tbisr, tanar, tanlpar);
+
+ if ( (fullduplex = (tanlpar & TANAR_FULL_DUP) &&
+ (tanar & TANAR_FULL_DUP)) ) {
+
+ /* both of us are full duplex */
+ writel(readl(dev->base + TXCFG)
+ | TXCFG_CSI | TXCFG_HBI | TXCFG_ATP,
+ dev->base + TXCFG);
+ writel(readl(dev->base + RXCFG) | RXCFG_RX_FD,
+ dev->base + RXCFG);
+ /* Light up full duplex LED */
+ writel(readl(dev->base + GPIOR) | GPIOR_GP1_OUT,
+ dev->base + GPIOR);
+
+ } else if (((tanlpar & TANAR_HALF_DUP) &&
+ (tanar & TANAR_HALF_DUP)) ||
+ ((tanlpar & TANAR_FULL_DUP) &&
+ (tanar & TANAR_HALF_DUP)) ||
+ ((tanlpar & TANAR_HALF_DUP) &&
+ (tanar & TANAR_FULL_DUP))) {
+
+ /* one or both of us are half duplex */
+ writel((readl(dev->base + TXCFG)
+ & ~(TXCFG_CSI | TXCFG_HBI)) | TXCFG_ATP,
+ dev->base + TXCFG);
+ writel(readl(dev->base + RXCFG) & ~RXCFG_RX_FD,
+ dev->base + RXCFG);
+ /* Turn off full duplex LED */
+ writel(readl(dev->base + GPIOR) & ~GPIOR_GP1_OUT,
+ dev->base + GPIOR);
+ }
+
+ speed = 4; /* 1000F */
+
+ } else {
+ /* we have a copper transceiver */
+ new_cfg = dev->CFG_cache & ~(CFG_SB | CFG_MODE_1000 | CFG_SPDSTS);
+
+ if (cfg & CFG_SPDSTS1)
+ new_cfg |= CFG_MODE_1000;
+ else
+ new_cfg &= ~CFG_MODE_1000;
+
+ speed = ((cfg / CFG_SPDSTS0) & 3);
+ fullduplex = (cfg & CFG_DUPSTS);
+
+ if (fullduplex) {
+ new_cfg |= CFG_SB;
+ writel(readl(dev->base + TXCFG)
+ | TXCFG_CSI | TXCFG_HBI,
+ dev->base + TXCFG);
+ writel(readl(dev->base + RXCFG) | RXCFG_RX_FD,
+ dev->base + RXCFG);
+ } else {
+ writel(readl(dev->base + TXCFG)
+ & ~(TXCFG_CSI | TXCFG_HBI),
+ dev->base + TXCFG);
+ writel(readl(dev->base + RXCFG) & ~(RXCFG_RX_FD),
+ dev->base + RXCFG);
+ }
+
+ if ((cfg & CFG_LNKSTS) &&
+ ((new_cfg ^ dev->CFG_cache) != 0)) {
+ writel(new_cfg, dev->base + CFG);
+ dev->CFG_cache = new_cfg;
+ }
+
+ dev->CFG_cache &= ~CFG_SPDSTS;
+ dev->CFG_cache |= cfg & CFG_SPDSTS;
+ }
+
+ newlinkstate = (cfg & CFG_LNKSTS) ? LINK_UP : LINK_DOWN;
+
+ if (newlinkstate & LINK_UP &&
+ dev->linkstate != newlinkstate) {
+ netif_start_queue(ndev);
+ netif_wake_queue(ndev);
+ printk(KERN_INFO "%s: link now %s mbps, %s duplex and up.\n",
+ ndev->name,
+ speeds[speed],
+ fullduplex ? "full" : "half");
+ } else if (newlinkstate & LINK_DOWN &&
+ dev->linkstate != newlinkstate) {
+ netif_stop_queue(ndev);
+ printk(KERN_INFO "%s: link now down.\n", ndev->name);
+ }
+
+ dev->linkstate = newlinkstate;
+}
+
+static int ns83820_setup_rx(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ unsigned i;
+ int ret;
+
+ dprintk("ns83820_setup_rx(%p)\n", ndev);
+
+ dev->rx_info.idle = 1;
+ dev->rx_info.next_rx = 0;
+ dev->rx_info.next_rx_desc = dev->rx_info.descs;
+ dev->rx_info.next_empty = 0;
+
+ for (i=0; i<NR_RX_DESC; i++)
+ clear_rx_desc(dev, i);
+
+ writel(0, dev->base + RXDP_HI);
+ writel(dev->rx_info.phy_descs, dev->base + RXDP);
+
+ ret = rx_refill(ndev, GFP_KERNEL);
+ if (!ret) {
+ dprintk("starting receiver\n");
+ /* prevent the interrupt handler from stomping on us */
+ spin_lock_irq(&dev->rx_info.lock);
+
+ writel(0x0001, dev->base + CCSR);
+ writel(0, dev->base + RFCR);
+ writel(0x7fc00000, dev->base + RFCR);
+ writel(0xffc00000, dev->base + RFCR);
+
+ dev->rx_info.up = 1;
+
+ phy_intr(ndev);
+
+ /* Okay, let it rip */
+ spin_lock(&dev->misc_lock);
+ dev->IMR_cache |= ISR_PHY;
+ dev->IMR_cache |= ISR_RXRCMP;
+ //dev->IMR_cache |= ISR_RXERR;
+ //dev->IMR_cache |= ISR_RXOK;
+ dev->IMR_cache |= ISR_RXORN;
+ dev->IMR_cache |= ISR_RXSOVR;
+ dev->IMR_cache |= ISR_RXDESC;
+ dev->IMR_cache |= ISR_RXIDLE;
+ dev->IMR_cache |= ISR_TXDESC;
+ dev->IMR_cache |= ISR_TXIDLE;
+
+ writel(dev->IMR_cache, dev->base + IMR);
+ writel(1, dev->base + IER);
+ spin_unlock(&dev->misc_lock);
+
+ kick_rx(ndev);
+
+ spin_unlock_irq(&dev->rx_info.lock);
+ }
+ return ret;
+}
+
+static void ns83820_cleanup_rx(struct ns83820 *dev)
+{
+ unsigned i;
+ unsigned long flags;
+
+ dprintk("ns83820_cleanup_rx(%p)\n", dev);
+
+ /* disable receive interrupts */
+ spin_lock_irqsave(&dev->misc_lock, flags);
+ dev->IMR_cache &= ~(ISR_RXOK | ISR_RXDESC | ISR_RXERR | ISR_RXEARLY | ISR_RXIDLE);
+ writel(dev->IMR_cache, dev->base + IMR);
+ spin_unlock_irqrestore(&dev->misc_lock, flags);
+
+ /* synchronize with the interrupt handler and kill it */
+ dev->rx_info.up = 0;
+ synchronize_irq(dev->pci_dev->irq);
+
+ /* touch the pci bus... */
+ readl(dev->base + IMR);
+
+ /* assumes the transmitter is already disabled and reset */
+ writel(0, dev->base + RXDP_HI);
+ writel(0, dev->base + RXDP);
+
+ for (i=0; i<NR_RX_DESC; i++) {
+ struct sk_buff *skb = dev->rx_info.skbs[i];
+ dev->rx_info.skbs[i] = NULL;
+ clear_rx_desc(dev, i);
+ kfree_skb(skb);
+ }
+}
+
+static void ns83820_rx_kick(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ /*if (nr_rx_empty(dev) >= NR_RX_DESC/4)*/ {
+ if (dev->rx_info.up) {
+ rx_refill_atomic(ndev);
+ kick_rx(ndev);
+ }
+ }
+
+ if (dev->rx_info.up && nr_rx_empty(dev) > NR_RX_DESC*3/4)
+ schedule_work(&dev->tq_refill);
+ else
+ kick_rx(ndev);
+ if (dev->rx_info.idle)
+ printk(KERN_DEBUG "%s: BAD\n", ndev->name);
+}
+
+/* rx_irq
+ *
+ */
+static void rx_irq(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ struct rx_info *info = &dev->rx_info;
+ unsigned next_rx;
+ int rx_rc, len;
+ u32 cmdsts;
+ __le32 *desc;
+ unsigned long flags;
+ int nr = 0;
+
+ dprintk("rx_irq(%p)\n", ndev);
+ dprintk("rxdp: %08x, descs: %08lx next_rx[%d]: %p next_empty[%d]: %p\n",
+ readl(dev->base + RXDP),
+ (long)(dev->rx_info.phy_descs),
+ (int)dev->rx_info.next_rx,
+ (dev->rx_info.descs + (DESC_SIZE * dev->rx_info.next_rx)),
+ (int)dev->rx_info.next_empty,
+ (dev->rx_info.descs + (DESC_SIZE * dev->rx_info.next_empty))
+ );
+
+ spin_lock_irqsave(&info->lock, flags);
+ if (!info->up)
+ goto out;
+
+ dprintk("walking descs\n");
+ next_rx = info->next_rx;
+ desc = info->next_rx_desc;
+ while ((CMDSTS_OWN & (cmdsts = le32_to_cpu(desc[DESC_CMDSTS]))) &&
+ (cmdsts != CMDSTS_OWN)) {
+ struct sk_buff *skb;
+ u32 extsts = le32_to_cpu(desc[DESC_EXTSTS]);
+ dma_addr_t bufptr = desc_addr_get(desc + DESC_BUFPTR);
+
+ dprintk("cmdsts: %08x\n", cmdsts);
+ dprintk("link: %08x\n", cpu_to_le32(desc[DESC_LINK]));
+ dprintk("extsts: %08x\n", extsts);
+
+ skb = info->skbs[next_rx];
+ info->skbs[next_rx] = NULL;
+ info->next_rx = (next_rx + 1) % NR_RX_DESC;
+
+ mb();
+ clear_rx_desc(dev, next_rx);
+
+ pci_unmap_single(dev->pci_dev, bufptr,
+ RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ len = cmdsts & CMDSTS_LEN_MASK;
+#ifdef NS83820_VLAN_ACCEL_SUPPORT
+ /* NH: As was mentioned below, this chip is kinda
+ * brain dead about vlan tag stripping. Frames
+ * that are 64 bytes with a vlan header appended
+ * like arp frames, or pings, are flagged as Runts
+ * when the tag is stripped and hardware. This
+ * also means that the OK bit in the descriptor
+ * is cleared when the frame comes in so we have
+ * to do a specific length check here to make sure
+ * the frame would have been ok, had we not stripped
+ * the tag.
+ */
+ if (likely((CMDSTS_OK & cmdsts) ||
+ ((cmdsts & CMDSTS_RUNT) && len >= 56))) {
+#else
+ if (likely(CMDSTS_OK & cmdsts)) {
+#endif
+ skb_put(skb, len);
+ if (unlikely(!skb))
+ goto netdev_mangle_me_harder_failed;
+ if (cmdsts & CMDSTS_DEST_MULTI)
+ ndev->stats.multicast++;
+ ndev->stats.rx_packets++;
+ ndev->stats.rx_bytes += len;
+ if ((extsts & 0x002a0000) && !(extsts & 0x00540000)) {
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ } else {
+ skb_checksum_none_assert(skb);
+ }
+ skb->protocol = eth_type_trans(skb, ndev);
+#ifdef NS83820_VLAN_ACCEL_SUPPORT
+ if(extsts & EXTSTS_VPKT) {
+ unsigned short tag;
+
+ tag = ntohs(extsts & EXTSTS_VTG_MASK);
+ __vlan_hwaccel_put_tag(skb, tag);
+ }
+#endif
+ rx_rc = netif_rx(skb);
+ if (NET_RX_DROP == rx_rc) {
+netdev_mangle_me_harder_failed:
+ ndev->stats.rx_dropped++;
+ }
+ } else {
+ kfree_skb(skb);
+ }
+
+ nr++;
+ next_rx = info->next_rx;
+ desc = info->descs + (DESC_SIZE * next_rx);
+ }
+ info->next_rx = next_rx;
+ info->next_rx_desc = info->descs + (DESC_SIZE * next_rx);
+
+out:
+ if (0 && !nr) {
+ Dprintk("dazed: cmdsts_f: %08x\n", cmdsts);
+ }
+
+ spin_unlock_irqrestore(&info->lock, flags);
+}
+
+static void rx_action(unsigned long _dev)
+{
+ struct net_device *ndev = (void *)_dev;
+ struct ns83820 *dev = PRIV(ndev);
+ rx_irq(ndev);
+ writel(ihr, dev->base + IHR);
+
+ spin_lock_irq(&dev->misc_lock);
+ dev->IMR_cache |= ISR_RXDESC;
+ writel(dev->IMR_cache, dev->base + IMR);
+ spin_unlock_irq(&dev->misc_lock);
+
+ rx_irq(ndev);
+ ns83820_rx_kick(ndev);
+}
+
+/* Packet Transmit code
+ */
+static inline void kick_tx(struct ns83820 *dev)
+{
+ dprintk("kick_tx(%p): tx_idx=%d free_idx=%d\n",
+ dev, dev->tx_idx, dev->tx_free_idx);
+ writel(CR_TXE, dev->base + CR);
+}
+
+/* No spinlock needed on the transmit irq path as the interrupt handler is
+ * serialized.
+ */
+static void do_tx_done(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ u32 cmdsts, tx_done_idx;
+ __le32 *desc;
+
+ dprintk("do_tx_done(%p)\n", ndev);
+ tx_done_idx = dev->tx_done_idx;
+ desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
+
+ dprintk("tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
+ tx_done_idx, dev->tx_free_idx, le32_to_cpu(desc[DESC_CMDSTS]));
+ while ((tx_done_idx != dev->tx_free_idx) &&
+ !(CMDSTS_OWN & (cmdsts = le32_to_cpu(desc[DESC_CMDSTS]))) ) {
+ struct sk_buff *skb;
+ unsigned len;
+ dma_addr_t addr;
+
+ if (cmdsts & CMDSTS_ERR)
+ ndev->stats.tx_errors++;
+ if (cmdsts & CMDSTS_OK)
+ ndev->stats.tx_packets++;
+ if (cmdsts & CMDSTS_OK)
+ ndev->stats.tx_bytes += cmdsts & 0xffff;
+
+ dprintk("tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
+ tx_done_idx, dev->tx_free_idx, cmdsts);
+ skb = dev->tx_skbs[tx_done_idx];
+ dev->tx_skbs[tx_done_idx] = NULL;
+ dprintk("done(%p)\n", skb);
+
+ len = cmdsts & CMDSTS_LEN_MASK;
+ addr = desc_addr_get(desc + DESC_BUFPTR);
+ if (skb) {
+ pci_unmap_single(dev->pci_dev,
+ addr,
+ len,
+ PCI_DMA_TODEVICE);
+ dev_kfree_skb_irq(skb);
+ atomic_dec(&dev->nr_tx_skbs);
+ } else
+ pci_unmap_page(dev->pci_dev,
+ addr,
+ len,
+ PCI_DMA_TODEVICE);
+
+ tx_done_idx = (tx_done_idx + 1) % NR_TX_DESC;
+ dev->tx_done_idx = tx_done_idx;
+ desc[DESC_CMDSTS] = cpu_to_le32(0);
+ mb();
+ desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
+ }
+
+ /* Allow network stack to resume queueing packets after we've
+ * finished transmitting at least 1/4 of the packets in the queue.
+ */
+ if (netif_queue_stopped(ndev) && start_tx_okay(dev)) {
+ dprintk("start_queue(%p)\n", ndev);
+ netif_start_queue(ndev);
+ netif_wake_queue(ndev);
+ }
+}
+
+static void ns83820_cleanup_tx(struct ns83820 *dev)
+{
+ unsigned i;
+
+ for (i=0; i<NR_TX_DESC; i++) {
+ struct sk_buff *skb = dev->tx_skbs[i];
+ dev->tx_skbs[i] = NULL;
+ if (skb) {
+ __le32 *desc = dev->tx_descs + (i * DESC_SIZE);
+ pci_unmap_single(dev->pci_dev,
+ desc_addr_get(desc + DESC_BUFPTR),
+ le32_to_cpu(desc[DESC_CMDSTS]) & CMDSTS_LEN_MASK,
+ PCI_DMA_TODEVICE);
+ dev_kfree_skb_irq(skb);
+ atomic_dec(&dev->nr_tx_skbs);
+ }
+ }
+
+ memset(dev->tx_descs, 0, NR_TX_DESC * DESC_SIZE * 4);
+}
+
+/* transmit routine. This code relies on the network layer serializing
+ * its calls in, but will run happily in parallel with the interrupt
+ * handler. This code currently has provisions for fragmenting tx buffers
+ * while trying to track down a bug in either the zero copy code or
+ * the tx fifo (hence the MAX_FRAG_LEN).
+ */
+static netdev_tx_t ns83820_hard_start_xmit(struct sk_buff *skb,
+ struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ u32 free_idx, cmdsts, extsts;
+ int nr_free, nr_frags;
+ unsigned tx_done_idx, last_idx;
+ dma_addr_t buf;
+ unsigned len;
+ skb_frag_t *frag;
+ int stopped = 0;
+ int do_intr = 0;
+ volatile __le32 *first_desc;
+
+ dprintk("ns83820_hard_start_xmit\n");
+
+ nr_frags = skb_shinfo(skb)->nr_frags;
+again:
+ if (unlikely(dev->CFG_cache & CFG_LNKSTS)) {
+ netif_stop_queue(ndev);
+ if (unlikely(dev->CFG_cache & CFG_LNKSTS))
+ return NETDEV_TX_BUSY;
+ netif_start_queue(ndev);
+ }
+
+ last_idx = free_idx = dev->tx_free_idx;
+ tx_done_idx = dev->tx_done_idx;
+ nr_free = (tx_done_idx + NR_TX_DESC-2 - free_idx) % NR_TX_DESC;
+ nr_free -= 1;
+ if (nr_free <= nr_frags) {
+ dprintk("stop_queue - not enough(%p)\n", ndev);
+ netif_stop_queue(ndev);
+
+ /* Check again: we may have raced with a tx done irq */
+ if (dev->tx_done_idx != tx_done_idx) {
+ dprintk("restart queue(%p)\n", ndev);
+ netif_start_queue(ndev);
+ goto again;
+ }
+ return NETDEV_TX_BUSY;
+ }
+
+ if (free_idx == dev->tx_intr_idx) {
+ do_intr = 1;
+ dev->tx_intr_idx = (dev->tx_intr_idx + NR_TX_DESC/4) % NR_TX_DESC;
+ }
+
+ nr_free -= nr_frags;
+ if (nr_free < MIN_TX_DESC_FREE) {
+ dprintk("stop_queue - last entry(%p)\n", ndev);
+ netif_stop_queue(ndev);
+ stopped = 1;
+ }
+
+ frag = skb_shinfo(skb)->frags;
+ if (!nr_frags)
+ frag = NULL;
+ extsts = 0;
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ extsts |= EXTSTS_IPPKT;
+ if (IPPROTO_TCP == ip_hdr(skb)->protocol)
+ extsts |= EXTSTS_TCPPKT;
+ else if (IPPROTO_UDP == ip_hdr(skb)->protocol)
+ extsts |= EXTSTS_UDPPKT;
+ }
+
+#ifdef NS83820_VLAN_ACCEL_SUPPORT
+ if(vlan_tx_tag_present(skb)) {
+ /* fetch the vlan tag info out of the
+ * ancillary data if the vlan code
+ * is using hw vlan acceleration
+ */
+ short tag = vlan_tx_tag_get(skb);
+ extsts |= (EXTSTS_VPKT | htons(tag));
+ }
+#endif
+
+ len = skb->len;
+ if (nr_frags)
+ len -= skb->data_len;
+ buf = pci_map_single(dev->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
+
+ first_desc = dev->tx_descs + (free_idx * DESC_SIZE);
+
+ for (;;) {
+ volatile __le32 *desc = dev->tx_descs + (free_idx * DESC_SIZE);
+
+ dprintk("frag[%3u]: %4u @ 0x%08Lx\n", free_idx, len,
+ (unsigned long long)buf);
+ last_idx = free_idx;
+ free_idx = (free_idx + 1) % NR_TX_DESC;
+ desc[DESC_LINK] = cpu_to_le32(dev->tx_phy_descs + (free_idx * DESC_SIZE * 4));
+ desc_addr_set(desc + DESC_BUFPTR, buf);
+ desc[DESC_EXTSTS] = cpu_to_le32(extsts);
+
+ cmdsts = ((nr_frags) ? CMDSTS_MORE : do_intr ? CMDSTS_INTR : 0);
+ cmdsts |= (desc == first_desc) ? 0 : CMDSTS_OWN;
+ cmdsts |= len;
+ desc[DESC_CMDSTS] = cpu_to_le32(cmdsts);
+
+ if (!nr_frags)
+ break;
+
+ buf = pci_map_page(dev->pci_dev, frag->page,
+ frag->page_offset,
+ frag->size, PCI_DMA_TODEVICE);
+ dprintk("frag: buf=%08Lx page=%08lx offset=%08lx\n",
+ (long long)buf, (long) page_to_pfn(frag->page),
+ frag->page_offset);
+ len = frag->size;
+ frag++;
+ nr_frags--;
+ }
+ dprintk("done pkt\n");
+
+ spin_lock_irq(&dev->tx_lock);
+ dev->tx_skbs[last_idx] = skb;
+ first_desc[DESC_CMDSTS] |= cpu_to_le32(CMDSTS_OWN);
+ dev->tx_free_idx = free_idx;
+ atomic_inc(&dev->nr_tx_skbs);
+ spin_unlock_irq(&dev->tx_lock);
+
+ kick_tx(dev);
+
+ /* Check again: we may have raced with a tx done irq */
+ if (stopped && (dev->tx_done_idx != tx_done_idx) && start_tx_okay(dev))
+ netif_start_queue(ndev);
+
+ return NETDEV_TX_OK;
+}
+
+static void ns83820_update_stats(struct ns83820 *dev)
+{
+ struct net_device *ndev = dev->ndev;
+ u8 __iomem *base = dev->base;
+
+ /* the DP83820 will freeze counters, so we need to read all of them */
+ ndev->stats.rx_errors += readl(base + 0x60) & 0xffff;
+ ndev->stats.rx_crc_errors += readl(base + 0x64) & 0xffff;
+ ndev->stats.rx_missed_errors += readl(base + 0x68) & 0xffff;
+ ndev->stats.rx_frame_errors += readl(base + 0x6c) & 0xffff;
+ /*ndev->stats.rx_symbol_errors +=*/ readl(base + 0x70);
+ ndev->stats.rx_length_errors += readl(base + 0x74) & 0xffff;
+ ndev->stats.rx_length_errors += readl(base + 0x78) & 0xffff;
+ /*ndev->stats.rx_badopcode_errors += */ readl(base + 0x7c);
+ /*ndev->stats.rx_pause_count += */ readl(base + 0x80);
+ /*ndev->stats.tx_pause_count += */ readl(base + 0x84);
+ ndev->stats.tx_carrier_errors += readl(base + 0x88) & 0xff;
+}
+
+static struct net_device_stats *ns83820_get_stats(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+
+ /* somewhat overkill */
+ spin_lock_irq(&dev->misc_lock);
+ ns83820_update_stats(dev);
+ spin_unlock_irq(&dev->misc_lock);
+
+ return &ndev->stats;
+}
+
+/* Let ethtool retrieve info */
+static int ns83820_get_settings(struct net_device *ndev,
+ struct ethtool_cmd *cmd)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ u32 cfg, tanar, tbicr;
+ int fullduplex = 0;
+
+ /*
+ * Here's the list of available ethtool commands from other drivers:
+ * cmd->advertising =
+ * ethtool_cmd_speed_set(cmd, ...)
+ * cmd->duplex =
+ * cmd->port = 0;
+ * cmd->phy_address =
+ * cmd->transceiver = 0;
+ * cmd->autoneg =
+ * cmd->maxtxpkt = 0;
+ * cmd->maxrxpkt = 0;
+ */
+
+ /* read current configuration */
+ cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
+ tanar = readl(dev->base + TANAR);
+ tbicr = readl(dev->base + TBICR);
+
+ fullduplex = (cfg & CFG_DUPSTS) ? 1 : 0;
+
+ cmd->supported = SUPPORTED_Autoneg;
+
+ if (dev->CFG_cache & CFG_TBI_EN) {
+ /* we have optical interface */
+ cmd->supported |= SUPPORTED_1000baseT_Half |
+ SUPPORTED_1000baseT_Full |
+ SUPPORTED_FIBRE;
+ cmd->port = PORT_FIBRE;
+ } else {
+ /* we have copper */
+ cmd->supported |= SUPPORTED_10baseT_Half |
+ SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half |
+ SUPPORTED_100baseT_Full | SUPPORTED_1000baseT_Half |
+ SUPPORTED_1000baseT_Full |
+ SUPPORTED_MII;
+ cmd->port = PORT_MII;
+ }
+
+ cmd->duplex = fullduplex ? DUPLEX_FULL : DUPLEX_HALF;
+ switch (cfg / CFG_SPDSTS0 & 3) {
+ case 2:
+ ethtool_cmd_speed_set(cmd, SPEED_1000);
+ break;
+ case 1:
+ ethtool_cmd_speed_set(cmd, SPEED_100);
+ break;
+ default:
+ ethtool_cmd_speed_set(cmd, SPEED_10);
+ break;
+ }
+ cmd->autoneg = (tbicr & TBICR_MR_AN_ENABLE)
+ ? AUTONEG_ENABLE : AUTONEG_DISABLE;
+ return 0;
+}
+
+/* Let ethool change settings*/
+static int ns83820_set_settings(struct net_device *ndev,
+ struct ethtool_cmd *cmd)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ u32 cfg, tanar;
+ int have_optical = 0;
+ int fullduplex = 0;
+
+ /* read current configuration */
+ cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
+ tanar = readl(dev->base + TANAR);
+
+ if (dev->CFG_cache & CFG_TBI_EN) {
+ /* we have optical */
+ have_optical = 1;
+ fullduplex = (tanar & TANAR_FULL_DUP);
+
+ } else {
+ /* we have copper */
+ fullduplex = cfg & CFG_DUPSTS;
+ }
+
+ spin_lock_irq(&dev->misc_lock);
+ spin_lock(&dev->tx_lock);
+
+ /* Set duplex */
+ if (cmd->duplex != fullduplex) {
+ if (have_optical) {
+ /*set full duplex*/
+ if (cmd->duplex == DUPLEX_FULL) {
+ /* force full duplex */
+ writel(readl(dev->base + TXCFG)
+ | TXCFG_CSI | TXCFG_HBI | TXCFG_ATP,
+ dev->base + TXCFG);
+ writel(readl(dev->base + RXCFG) | RXCFG_RX_FD,
+ dev->base + RXCFG);
+ /* Light up full duplex LED */
+ writel(readl(dev->base + GPIOR) | GPIOR_GP1_OUT,
+ dev->base + GPIOR);
+ } else {
+ /*TODO: set half duplex */
+ }
+
+ } else {
+ /*we have copper*/
+ /* TODO: Set duplex for copper cards */
+ }
+ printk(KERN_INFO "%s: Duplex set via ethtool\n",
+ ndev->name);
+ }
+
+ /* Set autonegotiation */
+ if (1) {
+ if (cmd->autoneg == AUTONEG_ENABLE) {
+ /* restart auto negotiation */
+ writel(TBICR_MR_AN_ENABLE | TBICR_MR_RESTART_AN,
+ dev->base + TBICR);
+ writel(TBICR_MR_AN_ENABLE, dev->base + TBICR);
+ dev->linkstate = LINK_AUTONEGOTIATE;
+
+ printk(KERN_INFO "%s: autoneg enabled via ethtool\n",
+ ndev->name);
+ } else {
+ /* disable auto negotiation */
+ writel(0x00000000, dev->base + TBICR);
+ }
+
+ printk(KERN_INFO "%s: autoneg %s via ethtool\n", ndev->name,
+ cmd->autoneg ? "ENABLED" : "DISABLED");
+ }
+
+ phy_intr(ndev);
+ spin_unlock(&dev->tx_lock);
+ spin_unlock_irq(&dev->misc_lock);
+
+ return 0;
+}
+/* end ethtool get/set support -df */
+
+static void ns83820_get_drvinfo(struct net_device *ndev, struct ethtool_drvinfo *info)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ strcpy(info->driver, "ns83820");
+ strcpy(info->version, VERSION);
+ strcpy(info->bus_info, pci_name(dev->pci_dev));
+}
+
+static u32 ns83820_get_link(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ u32 cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
+ return cfg & CFG_LNKSTS ? 1 : 0;
+}
+
+static const struct ethtool_ops ops = {
+ .get_settings = ns83820_get_settings,
+ .set_settings = ns83820_set_settings,
+ .get_drvinfo = ns83820_get_drvinfo,
+ .get_link = ns83820_get_link
+};
+
+static inline void ns83820_disable_interrupts(struct ns83820 *dev)
+{
+ writel(0, dev->base + IMR);
+ writel(0, dev->base + IER);
+ readl(dev->base + IER);
+}
+
+/* this function is called in irq context from the ISR */
+static void ns83820_mib_isr(struct ns83820 *dev)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&dev->misc_lock, flags);
+ ns83820_update_stats(dev);
+ spin_unlock_irqrestore(&dev->misc_lock, flags);
+}
+
+static void ns83820_do_isr(struct net_device *ndev, u32 isr);
+static irqreturn_t ns83820_irq(int foo, void *data)
+{
+ struct net_device *ndev = data;
+ struct ns83820 *dev = PRIV(ndev);
+ u32 isr;
+ dprintk("ns83820_irq(%p)\n", ndev);
+
+ dev->ihr = 0;
+
+ isr = readl(dev->base + ISR);
+ dprintk("irq: %08x\n", isr);
+ ns83820_do_isr(ndev, isr);
+ return IRQ_HANDLED;
+}
+
+static void ns83820_do_isr(struct net_device *ndev, u32 isr)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ unsigned long flags;
+
+#ifdef DEBUG
+ if (isr & ~(ISR_PHY | ISR_RXDESC | ISR_RXEARLY | ISR_RXOK | ISR_RXERR | ISR_TXIDLE | ISR_TXOK | ISR_TXDESC))
+ Dprintk("odd isr? 0x%08x\n", isr);
+#endif
+
+ if (ISR_RXIDLE & isr) {
+ dev->rx_info.idle = 1;
+ Dprintk("oh dear, we are idle\n");
+ ns83820_rx_kick(ndev);
+ }
+
+ if ((ISR_RXDESC | ISR_RXOK) & isr) {
+ prefetch(dev->rx_info.next_rx_desc);
+
+ spin_lock_irqsave(&dev->misc_lock, flags);
+ dev->IMR_cache &= ~(ISR_RXDESC | ISR_RXOK);
+ writel(dev->IMR_cache, dev->base + IMR);
+ spin_unlock_irqrestore(&dev->misc_lock, flags);
+
+ tasklet_schedule(&dev->rx_tasklet);
+ //rx_irq(ndev);
+ //writel(4, dev->base + IHR);
+ }
+
+ if ((ISR_RXIDLE | ISR_RXORN | ISR_RXDESC | ISR_RXOK | ISR_RXERR) & isr)
+ ns83820_rx_kick(ndev);
+
+ if (unlikely(ISR_RXSOVR & isr)) {
+ //printk("overrun: rxsovr\n");
+ ndev->stats.rx_fifo_errors++;
+ }
+
+ if (unlikely(ISR_RXORN & isr)) {
+ //printk("overrun: rxorn\n");
+ ndev->stats.rx_fifo_errors++;
+ }
+
+ if ((ISR_RXRCMP & isr) && dev->rx_info.up)
+ writel(CR_RXE, dev->base + CR);
+
+ if (ISR_TXIDLE & isr) {
+ u32 txdp;
+ txdp = readl(dev->base + TXDP);
+ dprintk("txdp: %08x\n", txdp);
+ txdp -= dev->tx_phy_descs;
+ dev->tx_idx = txdp / (DESC_SIZE * 4);
+ if (dev->tx_idx >= NR_TX_DESC) {
+ printk(KERN_ALERT "%s: BUG -- txdp out of range\n", ndev->name);
+ dev->tx_idx = 0;
+ }
+ /* The may have been a race between a pci originated read
+ * and the descriptor update from the cpu. Just in case,
+ * kick the transmitter if the hardware thinks it is on a
+ * different descriptor than we are.
+ */
+ if (dev->tx_idx != dev->tx_free_idx)
+ kick_tx(dev);
+ }
+
+ /* Defer tx ring processing until more than a minimum amount of
+ * work has accumulated
+ */
+ if ((ISR_TXDESC | ISR_TXIDLE | ISR_TXOK | ISR_TXERR) & isr) {
+ spin_lock_irqsave(&dev->tx_lock, flags);
+ do_tx_done(ndev);
+ spin_unlock_irqrestore(&dev->tx_lock, flags);
+
+ /* Disable TxOk if there are no outstanding tx packets.
+ */
+ if ((dev->tx_done_idx == dev->tx_free_idx) &&
+ (dev->IMR_cache & ISR_TXOK)) {
+ spin_lock_irqsave(&dev->misc_lock, flags);
+ dev->IMR_cache &= ~ISR_TXOK;
+ writel(dev->IMR_cache, dev->base + IMR);
+ spin_unlock_irqrestore(&dev->misc_lock, flags);
+ }
+ }
+
+ /* The TxIdle interrupt can come in before the transmit has
+ * completed. Normally we reap packets off of the combination
+ * of TxDesc and TxIdle and leave TxOk disabled (since it
+ * occurs on every packet), but when no further irqs of this
+ * nature are expected, we must enable TxOk.
+ */
+ if ((ISR_TXIDLE & isr) && (dev->tx_done_idx != dev->tx_free_idx)) {
+ spin_lock_irqsave(&dev->misc_lock, flags);
+ dev->IMR_cache |= ISR_TXOK;
+ writel(dev->IMR_cache, dev->base + IMR);
+ spin_unlock_irqrestore(&dev->misc_lock, flags);
+ }
+
+ /* MIB interrupt: one of the statistics counters is about to overflow */
+ if (unlikely(ISR_MIB & isr))
+ ns83820_mib_isr(dev);
+
+ /* PHY: Link up/down/negotiation state change */
+ if (unlikely(ISR_PHY & isr))
+ phy_intr(ndev);
+
+#if 0 /* Still working on the interrupt mitigation strategy */
+ if (dev->ihr)
+ writel(dev->ihr, dev->base + IHR);
+#endif
+}
+
+static void ns83820_do_reset(struct ns83820 *dev, u32 which)
+{
+ Dprintk("resetting chip...\n");
+ writel(which, dev->base + CR);
+ do {
+ schedule();
+ } while (readl(dev->base + CR) & which);
+ Dprintk("okay!\n");
+}
+
+static int ns83820_stop(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+
+ /* FIXME: protect against interrupt handler? */
+ del_timer_sync(&dev->tx_watchdog);
+
+ ns83820_disable_interrupts(dev);
+
+ dev->rx_info.up = 0;
+ synchronize_irq(dev->pci_dev->irq);
+
+ ns83820_do_reset(dev, CR_RST);
+
+ synchronize_irq(dev->pci_dev->irq);
+
+ spin_lock_irq(&dev->misc_lock);
+ dev->IMR_cache &= ~(ISR_TXURN | ISR_TXIDLE | ISR_TXERR | ISR_TXDESC | ISR_TXOK);
+ spin_unlock_irq(&dev->misc_lock);
+
+ ns83820_cleanup_rx(dev);
+ ns83820_cleanup_tx(dev);
+
+ return 0;
+}
+
+static void ns83820_tx_timeout(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ u32 tx_done_idx;
+ __le32 *desc;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->tx_lock, flags);
+
+ tx_done_idx = dev->tx_done_idx;
+ desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
+
+ printk(KERN_INFO "%s: tx_timeout: tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
+ ndev->name,
+ tx_done_idx, dev->tx_free_idx, le32_to_cpu(desc[DESC_CMDSTS]));
+
+#if defined(DEBUG)
+ {
+ u32 isr;
+ isr = readl(dev->base + ISR);
+ printk("irq: %08x imr: %08x\n", isr, dev->IMR_cache);
+ ns83820_do_isr(ndev, isr);
+ }
+#endif
+
+ do_tx_done(ndev);
+
+ tx_done_idx = dev->tx_done_idx;
+ desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
+
+ printk(KERN_INFO "%s: after: tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
+ ndev->name,
+ tx_done_idx, dev->tx_free_idx, le32_to_cpu(desc[DESC_CMDSTS]));
+
+ spin_unlock_irqrestore(&dev->tx_lock, flags);
+}
+
+static void ns83820_tx_watch(unsigned long data)
+{
+ struct net_device *ndev = (void *)data;
+ struct ns83820 *dev = PRIV(ndev);
+
+#if defined(DEBUG)
+ printk("ns83820_tx_watch: %u %u %d\n",
+ dev->tx_done_idx, dev->tx_free_idx, atomic_read(&dev->nr_tx_skbs)
+ );
+#endif
+
+ if (time_after(jiffies, dev_trans_start(ndev) + 1*HZ) &&
+ dev->tx_done_idx != dev->tx_free_idx) {
+ printk(KERN_DEBUG "%s: ns83820_tx_watch: %u %u %d\n",
+ ndev->name,
+ dev->tx_done_idx, dev->tx_free_idx,
+ atomic_read(&dev->nr_tx_skbs));
+ ns83820_tx_timeout(ndev);
+ }
+
+ mod_timer(&dev->tx_watchdog, jiffies + 2*HZ);
+}
+
+static int ns83820_open(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ unsigned i;
+ u32 desc;
+ int ret;
+
+ dprintk("ns83820_open\n");
+
+ writel(0, dev->base + PQCR);
+
+ ret = ns83820_setup_rx(ndev);
+ if (ret)
+ goto failed;
+
+ memset(dev->tx_descs, 0, 4 * NR_TX_DESC * DESC_SIZE);
+ for (i=0; i<NR_TX_DESC; i++) {
+ dev->tx_descs[(i * DESC_SIZE) + DESC_LINK]
+ = cpu_to_le32(
+ dev->tx_phy_descs
+ + ((i+1) % NR_TX_DESC) * DESC_SIZE * 4);
+ }
+
+ dev->tx_idx = 0;
+ dev->tx_done_idx = 0;
+ desc = dev->tx_phy_descs;
+ writel(0, dev->base + TXDP_HI);
+ writel(desc, dev->base + TXDP);
+
+ init_timer(&dev->tx_watchdog);
+ dev->tx_watchdog.data = (unsigned long)ndev;
+ dev->tx_watchdog.function = ns83820_tx_watch;
+ mod_timer(&dev->tx_watchdog, jiffies + 2*HZ);
+
+ netif_start_queue(ndev); /* FIXME: wait for phy to come up */
+
+ return 0;
+
+failed:
+ ns83820_stop(ndev);
+ return ret;
+}
+
+static void ns83820_getmac(struct ns83820 *dev, u8 *mac)
+{
+ unsigned i;
+ for (i=0; i<3; i++) {
+ u32 data;
+
+ /* Read from the perfect match memory: this is loaded by
+ * the chip from the EEPROM via the EELOAD self test.
+ */
+ writel(i*2, dev->base + RFCR);
+ data = readl(dev->base + RFDR);
+
+ *mac++ = data;
+ *mac++ = data >> 8;
+ }
+}
+
+static int ns83820_change_mtu(struct net_device *ndev, int new_mtu)
+{
+ if (new_mtu > RX_BUF_SIZE)
+ return -EINVAL;
+ ndev->mtu = new_mtu;
+ return 0;
+}
+
+static void ns83820_set_multicast(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ u8 __iomem *rfcr = dev->base + RFCR;
+ u32 and_mask = 0xffffffff;
+ u32 or_mask = 0;
+ u32 val;
+
+ if (ndev->flags & IFF_PROMISC)
+ or_mask |= RFCR_AAU | RFCR_AAM;
+ else
+ and_mask &= ~(RFCR_AAU | RFCR_AAM);
+
+ if (ndev->flags & IFF_ALLMULTI || netdev_mc_count(ndev))
+ or_mask |= RFCR_AAM;
+ else
+ and_mask &= ~RFCR_AAM;
+
+ spin_lock_irq(&dev->misc_lock);
+ val = (readl(rfcr) & and_mask) | or_mask;
+ /* Ramit : RFCR Write Fix doc says RFEN must be 0 modify other bits */
+ writel(val & ~RFCR_RFEN, rfcr);
+ writel(val, rfcr);
+ spin_unlock_irq(&dev->misc_lock);
+}
+
+static void ns83820_run_bist(struct net_device *ndev, const char *name, u32 enable, u32 done, u32 fail)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ int timed_out = 0;
+ unsigned long start;
+ u32 status;
+ int loops = 0;
+
+ dprintk("%s: start %s\n", ndev->name, name);
+
+ start = jiffies;
+
+ writel(enable, dev->base + PTSCR);
+ for (;;) {
+ loops++;
+ status = readl(dev->base + PTSCR);
+ if (!(status & enable))
+ break;
+ if (status & done)
+ break;
+ if (status & fail)
+ break;
+ if (time_after_eq(jiffies, start + HZ)) {
+ timed_out = 1;
+ break;
+ }
+ schedule_timeout_uninterruptible(1);
+ }
+
+ if (status & fail)
+ printk(KERN_INFO "%s: %s failed! (0x%08x & 0x%08x)\n",
+ ndev->name, name, status, fail);
+ else if (timed_out)
+ printk(KERN_INFO "%s: run_bist %s timed out! (%08x)\n",
+ ndev->name, name, status);
+
+ dprintk("%s: done %s in %d loops\n", ndev->name, name, loops);
+}
+
+#ifdef PHY_CODE_IS_FINISHED
+static void ns83820_mii_write_bit(struct ns83820 *dev, int bit)
+{
+ /* drive MDC low */
+ dev->MEAR_cache &= ~MEAR_MDC;
+ writel(dev->MEAR_cache, dev->base + MEAR);
+ readl(dev->base + MEAR);
+
+ /* enable output, set bit */
+ dev->MEAR_cache |= MEAR_MDDIR;
+ if (bit)
+ dev->MEAR_cache |= MEAR_MDIO;
+ else
+ dev->MEAR_cache &= ~MEAR_MDIO;
+
+ /* set the output bit */
+ writel(dev->MEAR_cache, dev->base + MEAR);
+ readl(dev->base + MEAR);
+
+ /* Wait. Max clock rate is 2.5MHz, this way we come in under 1MHz */
+ udelay(1);
+
+ /* drive MDC high causing the data bit to be latched */
+ dev->MEAR_cache |= MEAR_MDC;
+ writel(dev->MEAR_cache, dev->base + MEAR);
+ readl(dev->base + MEAR);
+
+ /* Wait again... */
+ udelay(1);
+}
+
+static int ns83820_mii_read_bit(struct ns83820 *dev)
+{
+ int bit;
+
+ /* drive MDC low, disable output */
+ dev->MEAR_cache &= ~MEAR_MDC;
+ dev->MEAR_cache &= ~MEAR_MDDIR;
+ writel(dev->MEAR_cache, dev->base + MEAR);
+ readl(dev->base + MEAR);
+
+ /* Wait. Max clock rate is 2.5MHz, this way we come in under 1MHz */
+ udelay(1);
+
+ /* drive MDC high causing the data bit to be latched */
+ bit = (readl(dev->base + MEAR) & MEAR_MDIO) ? 1 : 0;
+ dev->MEAR_cache |= MEAR_MDC;
+ writel(dev->MEAR_cache, dev->base + MEAR);
+
+ /* Wait again... */
+ udelay(1);
+
+ return bit;
+}
+
+static unsigned ns83820_mii_read_reg(struct ns83820 *dev, unsigned phy, unsigned reg)
+{
+ unsigned data = 0;
+ int i;
+
+ /* read some garbage so that we eventually sync up */
+ for (i=0; i<64; i++)
+ ns83820_mii_read_bit(dev);
+
+ ns83820_mii_write_bit(dev, 0); /* start */
+ ns83820_mii_write_bit(dev, 1);
+ ns83820_mii_write_bit(dev, 1); /* opcode read */
+ ns83820_mii_write_bit(dev, 0);
+
+ /* write out the phy address: 5 bits, msb first */
+ for (i=0; i<5; i++)
+ ns83820_mii_write_bit(dev, phy & (0x10 >> i));
+
+ /* write out the register address, 5 bits, msb first */
+ for (i=0; i<5; i++)
+ ns83820_mii_write_bit(dev, reg & (0x10 >> i));
+
+ ns83820_mii_read_bit(dev); /* turn around cycles */
+ ns83820_mii_read_bit(dev);
+
+ /* read in the register data, 16 bits msb first */
+ for (i=0; i<16; i++) {
+ data <<= 1;
+ data |= ns83820_mii_read_bit(dev);
+ }
+
+ return data;
+}
+
+static unsigned ns83820_mii_write_reg(struct ns83820 *dev, unsigned phy, unsigned reg, unsigned data)
+{
+ int i;
+
+ /* read some garbage so that we eventually sync up */
+ for (i=0; i<64; i++)
+ ns83820_mii_read_bit(dev);
+
+ ns83820_mii_write_bit(dev, 0); /* start */
+ ns83820_mii_write_bit(dev, 1);
+ ns83820_mii_write_bit(dev, 0); /* opcode read */
+ ns83820_mii_write_bit(dev, 1);
+
+ /* write out the phy address: 5 bits, msb first */
+ for (i=0; i<5; i++)
+ ns83820_mii_write_bit(dev, phy & (0x10 >> i));
+
+ /* write out the register address, 5 bits, msb first */
+ for (i=0; i<5; i++)
+ ns83820_mii_write_bit(dev, reg & (0x10 >> i));
+
+ ns83820_mii_read_bit(dev); /* turn around cycles */
+ ns83820_mii_read_bit(dev);
+
+ /* read in the register data, 16 bits msb first */
+ for (i=0; i<16; i++)
+ ns83820_mii_write_bit(dev, (data >> (15 - i)) & 1);
+
+ return data;
+}
+
+static void ns83820_probe_phy(struct net_device *ndev)
+{
+ struct ns83820 *dev = PRIV(ndev);
+ static int first;
+ int i;
+#define MII_PHYIDR1 0x02
+#define MII_PHYIDR2 0x03
+
+#if 0
+ if (!first) {
+ unsigned tmp;
+ ns83820_mii_read_reg(dev, 1, 0x09);
+ ns83820_mii_write_reg(dev, 1, 0x10, 0x0d3e);
+
+ tmp = ns83820_mii_read_reg(dev, 1, 0x00);
+ ns83820_mii_write_reg(dev, 1, 0x00, tmp | 0x8000);
+ udelay(1300);
+ ns83820_mii_read_reg(dev, 1, 0x09);
+ }
+#endif
+ first = 1;
+
+ for (i=1; i<2; i++) {
+ int j;
+ unsigned a, b;
+ a = ns83820_mii_read_reg(dev, i, MII_PHYIDR1);
+ b = ns83820_mii_read_reg(dev, i, MII_PHYIDR2);
+
+ //printk("%s: phy %d: 0x%04x 0x%04x\n",
+ // ndev->name, i, a, b);
+
+ for (j=0; j<0x16; j+=4) {
+ dprintk("%s: [0x%02x] %04x %04x %04x %04x\n",
+ ndev->name, j,
+ ns83820_mii_read_reg(dev, i, 0 + j),
+ ns83820_mii_read_reg(dev, i, 1 + j),
+ ns83820_mii_read_reg(dev, i, 2 + j),
+ ns83820_mii_read_reg(dev, i, 3 + j)
+ );
+ }
+ }
+ {
+ unsigned a, b;
+ /* read firmware version: memory addr is 0x8402 and 0x8403 */
+ ns83820_mii_write_reg(dev, 1, 0x16, 0x000d);
+ ns83820_mii_write_reg(dev, 1, 0x1e, 0x810e);
+ a = ns83820_mii_read_reg(dev, 1, 0x1d);
+
+ ns83820_mii_write_reg(dev, 1, 0x16, 0x000d);
+ ns83820_mii_write_reg(dev, 1, 0x1e, 0x810e);
+ b = ns83820_mii_read_reg(dev, 1, 0x1d);
+ dprintk("version: 0x%04x 0x%04x\n", a, b);
+ }
+}
+#endif
+
+static const struct net_device_ops netdev_ops = {
+ .ndo_open = ns83820_open,
+ .ndo_stop = ns83820_stop,
+ .ndo_start_xmit = ns83820_hard_start_xmit,
+ .ndo_get_stats = ns83820_get_stats,
+ .ndo_change_mtu = ns83820_change_mtu,
+ .ndo_set_multicast_list = ns83820_set_multicast,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_tx_timeout = ns83820_tx_timeout,
+};
+
+static int __devinit ns83820_init_one(struct pci_dev *pci_dev,
+ const struct pci_device_id *id)
+{
+ struct net_device *ndev;
+ struct ns83820 *dev;
+ long addr;
+ int err;
+ int using_dac = 0;
+
+ /* See if we can set the dma mask early on; failure is fatal. */
+ if (sizeof(dma_addr_t) == 8 &&
+ !pci_set_dma_mask(pci_dev, DMA_BIT_MASK(64))) {
+ using_dac = 1;
+ } else if (!pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32))) {
+ using_dac = 0;
+ } else {
+ dev_warn(&pci_dev->dev, "pci_set_dma_mask failed!\n");
+ return -ENODEV;
+ }
+
+ ndev = alloc_etherdev(sizeof(struct ns83820));
+ err = -ENOMEM;
+ if (!ndev)
+ goto out;
+
+ dev = PRIV(ndev);
+ dev->ndev = ndev;
+
+ spin_lock_init(&dev->rx_info.lock);
+ spin_lock_init(&dev->tx_lock);
+ spin_lock_init(&dev->misc_lock);
+ dev->pci_dev = pci_dev;
+
+ SET_NETDEV_DEV(ndev, &pci_dev->dev);
+
+ INIT_WORK(&dev->tq_refill, queue_refill);
+ tasklet_init(&dev->rx_tasklet, rx_action, (unsigned long)ndev);
+
+ err = pci_enable_device(pci_dev);
+ if (err) {
+ dev_info(&pci_dev->dev, "pci_enable_dev failed: %d\n", err);
+ goto out_free;
+ }
+
+ pci_set_master(pci_dev);
+ addr = pci_resource_start(pci_dev, 1);
+ dev->base = ioremap_nocache(addr, PAGE_SIZE);
+ dev->tx_descs = pci_alloc_consistent(pci_dev,
+ 4 * DESC_SIZE * NR_TX_DESC, &dev->tx_phy_descs);
+ dev->rx_info.descs = pci_alloc_consistent(pci_dev,
+ 4 * DESC_SIZE * NR_RX_DESC, &dev->rx_info.phy_descs);
+ err = -ENOMEM;
+ if (!dev->base || !dev->tx_descs || !dev->rx_info.descs)
+ goto out_disable;
+
+ dprintk("%p: %08lx %p: %08lx\n",
+ dev->tx_descs, (long)dev->tx_phy_descs,
+ dev->rx_info.descs, (long)dev->rx_info.phy_descs);
+
+ ns83820_disable_interrupts(dev);
+
+ dev->IMR_cache = 0;
+
+ err = request_irq(pci_dev->irq, ns83820_irq, IRQF_SHARED,
+ DRV_NAME, ndev);
+ if (err) {
+ dev_info(&pci_dev->dev, "unable to register irq %d, err %d\n",
+ pci_dev->irq, err);
+ goto out_disable;
+ }
+
+ /*
+ * FIXME: we are holding rtnl_lock() over obscenely long area only
+ * because some of the setup code uses dev->name. It's Wrong(tm) -
+ * we should be using driver-specific names for all that stuff.
+ * For now that will do, but we really need to come back and kill
+ * most of the dev_alloc_name() users later.
+ */
+ rtnl_lock();
+ err = dev_alloc_name(ndev, ndev->name);
+ if (err < 0) {
+ dev_info(&pci_dev->dev, "unable to get netdev name: %d\n", err);
+ goto out_free_irq;
+ }
+
+ printk("%s: ns83820.c: 0x22c: %08x, subsystem: %04x:%04x\n",
+ ndev->name, le32_to_cpu(readl(dev->base + 0x22c)),
+ pci_dev->subsystem_vendor, pci_dev->subsystem_device);
+
+ ndev->netdev_ops = &netdev_ops;
+ SET_ETHTOOL_OPS(ndev, &ops);
+ ndev->watchdog_timeo = 5 * HZ;
+ pci_set_drvdata(pci_dev, ndev);
+
+ ns83820_do_reset(dev, CR_RST);
+
+ /* Must reset the ram bist before running it */
+ writel(PTSCR_RBIST_RST, dev->base + PTSCR);
+ ns83820_run_bist(ndev, "sram bist", PTSCR_RBIST_EN,
+ PTSCR_RBIST_DONE, PTSCR_RBIST_FAIL);
+ ns83820_run_bist(ndev, "eeprom bist", PTSCR_EEBIST_EN, 0,
+ PTSCR_EEBIST_FAIL);
+ ns83820_run_bist(ndev, "eeprom load", PTSCR_EELOAD_EN, 0, 0);
+
+ /* I love config registers */
+ dev->CFG_cache = readl(dev->base + CFG);
+
+ if ((dev->CFG_cache & CFG_PCI64_DET)) {
+ printk(KERN_INFO "%s: detected 64 bit PCI data bus.\n",
+ ndev->name);
+ /*dev->CFG_cache |= CFG_DATA64_EN;*/
+ if (!(dev->CFG_cache & CFG_DATA64_EN))
+ printk(KERN_INFO "%s: EEPROM did not enable 64 bit bus. Disabled.\n",
+ ndev->name);
+ } else
+ dev->CFG_cache &= ~(CFG_DATA64_EN);
+
+ dev->CFG_cache &= (CFG_TBI_EN | CFG_MRM_DIS | CFG_MWI_DIS |
+ CFG_T64ADDR | CFG_DATA64_EN | CFG_EXT_125 |
+ CFG_M64ADDR);
+ dev->CFG_cache |= CFG_PINT_DUPSTS | CFG_PINT_LNKSTS | CFG_PINT_SPDSTS |
+ CFG_EXTSTS_EN | CFG_EXD | CFG_PESEL;
+ dev->CFG_cache |= CFG_REQALG;
+ dev->CFG_cache |= CFG_POW;
+ dev->CFG_cache |= CFG_TMRTEST;
+
+ /* When compiled with 64 bit addressing, we must always enable
+ * the 64 bit descriptor format.
+ */
+ if (sizeof(dma_addr_t) == 8)
+ dev->CFG_cache |= CFG_M64ADDR;
+ if (using_dac)
+ dev->CFG_cache |= CFG_T64ADDR;
+
+ /* Big endian mode does not seem to do what the docs suggest */
+ dev->CFG_cache &= ~CFG_BEM;
+
+ /* setup optical transceiver if we have one */
+ if (dev->CFG_cache & CFG_TBI_EN) {
+ printk(KERN_INFO "%s: enabling optical transceiver\n",
+ ndev->name);
+ writel(readl(dev->base + GPIOR) | 0x3e8, dev->base + GPIOR);
+
+ /* setup auto negotiation feature advertisement */
+ writel(readl(dev->base + TANAR)
+ | TANAR_HALF_DUP | TANAR_FULL_DUP,
+ dev->base + TANAR);
+
+ /* start auto negotiation */
+ writel(TBICR_MR_AN_ENABLE | TBICR_MR_RESTART_AN,
+ dev->base + TBICR);
+ writel(TBICR_MR_AN_ENABLE, dev->base + TBICR);
+ dev->linkstate = LINK_AUTONEGOTIATE;
+
+ dev->CFG_cache |= CFG_MODE_1000;
+ }
+
+ writel(dev->CFG_cache, dev->base + CFG);
+ dprintk("CFG: %08x\n", dev->CFG_cache);
+
+ if (reset_phy) {
+ printk(KERN_INFO "%s: resetting phy\n", ndev->name);
+ writel(dev->CFG_cache | CFG_PHY_RST, dev->base + CFG);
+ msleep(10);
+ writel(dev->CFG_cache, dev->base + CFG);
+ }
+
+#if 0 /* Huh? This sets the PCI latency register. Should be done via
+ * the PCI layer. FIXME.
+ */
+ if (readl(dev->base + SRR))
+ writel(readl(dev->base+0x20c) | 0xfe00, dev->base + 0x20c);
+#endif
+
+ /* Note! The DMA burst size interacts with packet
+ * transmission, such that the largest packet that
+ * can be transmitted is 8192 - FLTH - burst size.
+ * If only the transmit fifo was larger...
+ */
+ /* Ramit : 1024 DMA is not a good idea, it ends up banging
+ * some DELL and COMPAQ SMP systems */
+ writel(TXCFG_CSI | TXCFG_HBI | TXCFG_ATP | TXCFG_MXDMA512
+ | ((1600 / 32) * 0x100),
+ dev->base + TXCFG);
+
+ /* Flush the interrupt holdoff timer */
+ writel(0x000, dev->base + IHR);
+ writel(0x100, dev->base + IHR);
+ writel(0x000, dev->base + IHR);
+
+ /* Set Rx to full duplex, don't accept runt, errored, long or length
+ * range errored packets. Use 512 byte DMA.
+ */
+ /* Ramit : 1024 DMA is not a good idea, it ends up banging
+ * some DELL and COMPAQ SMP systems
+ * Turn on ALP, only we are accpeting Jumbo Packets */
+ writel(RXCFG_AEP | RXCFG_ARP | RXCFG_AIRL | RXCFG_RX_FD
+ | RXCFG_STRIPCRC
+ //| RXCFG_ALP
+ | (RXCFG_MXDMA512) | 0, dev->base + RXCFG);
+
+ /* Disable priority queueing */
+ writel(0, dev->base + PQCR);
+
+ /* Enable IP checksum validation and detetion of VLAN headers.
+ * Note: do not set the reject options as at least the 0x102
+ * revision of the chip does not properly accept IP fragments
+ * at least for UDP.
+ */
+ /* Ramit : Be sure to turn on RXCFG_ARP if VLAN's are enabled, since
+ * the MAC it calculates the packetsize AFTER stripping the VLAN
+ * header, and if a VLAN Tagged packet of 64 bytes is received (like
+ * a ping with a VLAN header) then the card, strips the 4 byte VLAN
+ * tag and then checks the packet size, so if RXCFG_ARP is not enabled,
+ * it discrards it!. These guys......
+ * also turn on tag stripping if hardware acceleration is enabled
+ */
+#ifdef NS83820_VLAN_ACCEL_SUPPORT
+#define VRCR_INIT_VALUE (VRCR_IPEN|VRCR_VTDEN|VRCR_VTREN)
+#else
+#define VRCR_INIT_VALUE (VRCR_IPEN|VRCR_VTDEN)
+#endif
+ writel(VRCR_INIT_VALUE, dev->base + VRCR);
+
+ /* Enable per-packet TCP/UDP/IP checksumming
+ * and per packet vlan tag insertion if
+ * vlan hardware acceleration is enabled
+ */
+#ifdef NS83820_VLAN_ACCEL_SUPPORT
+#define VTCR_INIT_VALUE (VTCR_PPCHK|VTCR_VPPTI)
+#else
+#define VTCR_INIT_VALUE VTCR_PPCHK
+#endif
+ writel(VTCR_INIT_VALUE, dev->base + VTCR);
+
+ /* Ramit : Enable async and sync pause frames */
+ /* writel(0, dev->base + PCR); */
+ writel((PCR_PS_MCAST | PCR_PS_DA | PCR_PSEN | PCR_FFLO_4K |
+ PCR_FFHI_8K | PCR_STLO_4 | PCR_STHI_8 | PCR_PAUSE_CNT),
+ dev->base + PCR);
+
+ /* Disable Wake On Lan */
+ writel(0, dev->base + WCSR);
+
+ ns83820_getmac(dev, ndev->dev_addr);
+
+ /* Yes, we support dumb IP checksum on transmit */
+ ndev->features |= NETIF_F_SG;
+ ndev->features |= NETIF_F_IP_CSUM;
+
+#ifdef NS83820_VLAN_ACCEL_SUPPORT
+ /* We also support hardware vlan acceleration */
+ ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+#endif
+
+ if (using_dac) {
+ printk(KERN_INFO "%s: using 64 bit addressing.\n",
+ ndev->name);
+ ndev->features |= NETIF_F_HIGHDMA;
+ }
+
+ printk(KERN_INFO "%s: ns83820 v" VERSION ": DP83820 v%u.%u: %pM io=0x%08lx irq=%d f=%s\n",
+ ndev->name,
+ (unsigned)readl(dev->base + SRR) >> 8,
+ (unsigned)readl(dev->base + SRR) & 0xff,
+ ndev->dev_addr, addr, pci_dev->irq,
+ (ndev->features & NETIF_F_HIGHDMA) ? "h,sg" : "sg"
+ );
+
+#ifdef PHY_CODE_IS_FINISHED
+ ns83820_probe_phy(ndev);
+#endif
+
+ err = register_netdevice(ndev);
+ if (err) {
+ printk(KERN_INFO "ns83820: unable to register netdev: %d\n", err);
+ goto out_cleanup;
+ }
+ rtnl_unlock();
+
+ return 0;
+
+out_cleanup:
+ ns83820_disable_interrupts(dev); /* paranoia */
+out_free_irq:
+ rtnl_unlock();
+ free_irq(pci_dev->irq, ndev);
+out_disable:
+ if (dev->base)
+ iounmap(dev->base);
+ pci_free_consistent(pci_dev, 4 * DESC_SIZE * NR_TX_DESC, dev->tx_descs, dev->tx_phy_descs);
+ pci_free_consistent(pci_dev, 4 * DESC_SIZE * NR_RX_DESC, dev->rx_info.descs, dev->rx_info.phy_descs);
+ pci_disable_device(pci_dev);
+out_free:
+ free_netdev(ndev);
+ pci_set_drvdata(pci_dev, NULL);
+out:
+ return err;
+}
+
+static void __devexit ns83820_remove_one(struct pci_dev *pci_dev)
+{
+ struct net_device *ndev = pci_get_drvdata(pci_dev);
+ struct ns83820 *dev = PRIV(ndev); /* ok even if NULL */
+
+ if (!ndev) /* paranoia */
+ return;
+
+ ns83820_disable_interrupts(dev); /* paranoia */
+
+ unregister_netdev(ndev);
+ free_irq(dev->pci_dev->irq, ndev);
+ iounmap(dev->base);
+ pci_free_consistent(dev->pci_dev, 4 * DESC_SIZE * NR_TX_DESC,
+ dev->tx_descs, dev->tx_phy_descs);
+ pci_free_consistent(dev->pci_dev, 4 * DESC_SIZE * NR_RX_DESC,
+ dev->rx_info.descs, dev->rx_info.phy_descs);
+ pci_disable_device(dev->pci_dev);
+ free_netdev(ndev);
+ pci_set_drvdata(pci_dev, NULL);
+}
+
+static DEFINE_PCI_DEVICE_TABLE(ns83820_pci_tbl) = {
+ { 0x100b, 0x0022, PCI_ANY_ID, PCI_ANY_ID, 0, .driver_data = 0, },
+ { 0, },
+};
+
+static struct pci_driver driver = {
+ .name = "ns83820",
+ .id_table = ns83820_pci_tbl,
+ .probe = ns83820_init_one,
+ .remove = __devexit_p(ns83820_remove_one),
+#if 0 /* FIXME: implement */
+ .suspend = ,
+ .resume = ,
+#endif
+};
+
+
+static int __init ns83820_init(void)
+{
+ printk(KERN_INFO "ns83820.c: National Semiconductor DP83820 10/100/1000 driver.\n");
+ return pci_register_driver(&driver);
+}
+
+static void __exit ns83820_exit(void)
+{
+ pci_unregister_driver(&driver);
+}
+
+MODULE_AUTHOR("Benjamin LaHaise <bcrl@kvack.org>");
+MODULE_DESCRIPTION("National Semiconductor DP83820 10/100/1000 driver");
+MODULE_LICENSE("GPL");
+
+MODULE_DEVICE_TABLE(pci, ns83820_pci_tbl);
+
+module_param(lnksts, int, 0);
+MODULE_PARM_DESC(lnksts, "Polarity of LNKSTS bit");
+
+module_param(ihr, int, 0);
+MODULE_PARM_DESC(ihr, "Time in 100 us increments to delay interrupts (range 0-127)");
+
+module_param(reset_phy, int, 0);
+MODULE_PARM_DESC(reset_phy, "Set to 1 to reset the PHY on startup");
+
+module_init(ns83820_init);
+module_exit(ns83820_exit);
--- /dev/null
+/*
+ * sonic.c
+ *
+ * (C) 2005 Finn Thain
+ *
+ * Converted to DMA API, added zero-copy buffer handling, and
+ * (from the mac68k project) introduced dhd's support for 16-bit cards.
+ *
+ * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
+ *
+ * This driver is based on work from Andreas Busse, but most of
+ * the code is rewritten.
+ *
+ * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
+ *
+ * Core code included by system sonic drivers
+ *
+ * And... partially rewritten again by David Huggins-Daines in order
+ * to cope with screwed up Macintosh NICs that may or may not use
+ * 16-bit DMA.
+ *
+ * (C) 1999 David Huggins-Daines <dhd@debian.org>
+ *
+ */
+
+/*
+ * Sources: Olivetti M700-10 Risc Personal Computer hardware handbook,
+ * National Semiconductors data sheet for the DP83932B Sonic Ethernet
+ * controller, and the files "8390.c" and "skeleton.c" in this directory.
+ *
+ * Additional sources: Nat Semi data sheet for the DP83932C and Nat Semi
+ * Application Note AN-746, the files "lance.c" and "ibmlana.c". See also
+ * the NetBSD file "sys/arch/mac68k/dev/if_sn.c".
+ */
+
+
+
+/*
+ * Open/initialize the SONIC controller.
+ *
+ * This routine should set everything up anew at each open, even
+ * registers that "should" only need to be set once at boot, so that
+ * there is non-reboot way to recover if something goes wrong.
+ */
+static int sonic_open(struct net_device *dev)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ int i;
+
+ if (sonic_debug > 2)
+ printk("sonic_open: initializing sonic driver.\n");
+
+ for (i = 0; i < SONIC_NUM_RRS; i++) {
+ struct sk_buff *skb = dev_alloc_skb(SONIC_RBSIZE + 2);
+ if (skb == NULL) {
+ while(i > 0) { /* free any that were allocated successfully */
+ i--;
+ dev_kfree_skb(lp->rx_skb[i]);
+ lp->rx_skb[i] = NULL;
+ }
+ printk(KERN_ERR "%s: couldn't allocate receive buffers\n",
+ dev->name);
+ return -ENOMEM;
+ }
+ /* align IP header unless DMA requires otherwise */
+ if (SONIC_BUS_SCALE(lp->dma_bitmode) == 2)
+ skb_reserve(skb, 2);
+ lp->rx_skb[i] = skb;
+ }
+
+ for (i = 0; i < SONIC_NUM_RRS; i++) {
+ dma_addr_t laddr = dma_map_single(lp->device, skb_put(lp->rx_skb[i], SONIC_RBSIZE),
+ SONIC_RBSIZE, DMA_FROM_DEVICE);
+ if (!laddr) {
+ while(i > 0) { /* free any that were mapped successfully */
+ i--;
+ dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE);
+ lp->rx_laddr[i] = (dma_addr_t)0;
+ }
+ for (i = 0; i < SONIC_NUM_RRS; i++) {
+ dev_kfree_skb(lp->rx_skb[i]);
+ lp->rx_skb[i] = NULL;
+ }
+ printk(KERN_ERR "%s: couldn't map rx DMA buffers\n",
+ dev->name);
+ return -ENOMEM;
+ }
+ lp->rx_laddr[i] = laddr;
+ }
+
+ /*
+ * Initialize the SONIC
+ */
+ sonic_init(dev);
+
+ netif_start_queue(dev);
+
+ if (sonic_debug > 2)
+ printk("sonic_open: Initialization done.\n");
+
+ return 0;
+}
+
+
+/*
+ * Close the SONIC device
+ */
+static int sonic_close(struct net_device *dev)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ int i;
+
+ if (sonic_debug > 2)
+ printk("sonic_close\n");
+
+ netif_stop_queue(dev);
+
+ /*
+ * stop the SONIC, disable interrupts
+ */
+ SONIC_WRITE(SONIC_IMR, 0);
+ SONIC_WRITE(SONIC_ISR, 0x7fff);
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
+
+ /* unmap and free skbs that haven't been transmitted */
+ for (i = 0; i < SONIC_NUM_TDS; i++) {
+ if(lp->tx_laddr[i]) {
+ dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE);
+ lp->tx_laddr[i] = (dma_addr_t)0;
+ }
+ if(lp->tx_skb[i]) {
+ dev_kfree_skb(lp->tx_skb[i]);
+ lp->tx_skb[i] = NULL;
+ }
+ }
+
+ /* unmap and free the receive buffers */
+ for (i = 0; i < SONIC_NUM_RRS; i++) {
+ if(lp->rx_laddr[i]) {
+ dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE);
+ lp->rx_laddr[i] = (dma_addr_t)0;
+ }
+ if(lp->rx_skb[i]) {
+ dev_kfree_skb(lp->rx_skb[i]);
+ lp->rx_skb[i] = NULL;
+ }
+ }
+
+ return 0;
+}
+
+static void sonic_tx_timeout(struct net_device *dev)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ int i;
+ /*
+ * put the Sonic into software-reset mode and
+ * disable all interrupts before releasing DMA buffers
+ */
+ SONIC_WRITE(SONIC_IMR, 0);
+ SONIC_WRITE(SONIC_ISR, 0x7fff);
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
+ /* We could resend the original skbs. Easier to re-initialise. */
+ for (i = 0; i < SONIC_NUM_TDS; i++) {
+ if(lp->tx_laddr[i]) {
+ dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE);
+ lp->tx_laddr[i] = (dma_addr_t)0;
+ }
+ if(lp->tx_skb[i]) {
+ dev_kfree_skb(lp->tx_skb[i]);
+ lp->tx_skb[i] = NULL;
+ }
+ }
+ /* Try to restart the adaptor. */
+ sonic_init(dev);
+ lp->stats.tx_errors++;
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ netif_wake_queue(dev);
+}
+
+/*
+ * transmit packet
+ *
+ * Appends new TD during transmission thus avoiding any TX interrupts
+ * until we run out of TDs.
+ * This routine interacts closely with the ISR in that it may,
+ * set tx_skb[i]
+ * reset the status flags of the new TD
+ * set and reset EOL flags
+ * stop the tx queue
+ * The ISR interacts with this routine in various ways. It may,
+ * reset tx_skb[i]
+ * test the EOL and status flags of the TDs
+ * wake the tx queue
+ * Concurrently with all of this, the SONIC is potentially writing to
+ * the status flags of the TDs.
+ * Until some mutual exclusion is added, this code will not work with SMP. However,
+ * MIPS Jazz machines and m68k Macs were all uni-processor machines.
+ */
+
+static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ dma_addr_t laddr;
+ int length;
+ int entry = lp->next_tx;
+
+ if (sonic_debug > 2)
+ printk("sonic_send_packet: skb=%p, dev=%p\n", skb, dev);
+
+ length = skb->len;
+ if (length < ETH_ZLEN) {
+ if (skb_padto(skb, ETH_ZLEN))
+ return NETDEV_TX_OK;
+ length = ETH_ZLEN;
+ }
+
+ /*
+ * Map the packet data into the logical DMA address space
+ */
+
+ laddr = dma_map_single(lp->device, skb->data, length, DMA_TO_DEVICE);
+ if (!laddr) {
+ printk(KERN_ERR "%s: failed to map tx DMA buffer.\n", dev->name);
+ dev_kfree_skb(skb);
+ return NETDEV_TX_BUSY;
+ }
+
+ sonic_tda_put(dev, entry, SONIC_TD_STATUS, 0); /* clear status */
+ sonic_tda_put(dev, entry, SONIC_TD_FRAG_COUNT, 1); /* single fragment */
+ sonic_tda_put(dev, entry, SONIC_TD_PKTSIZE, length); /* length of packet */
+ sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_L, laddr & 0xffff);
+ sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_H, laddr >> 16);
+ sonic_tda_put(dev, entry, SONIC_TD_FRAG_SIZE, length);
+ sonic_tda_put(dev, entry, SONIC_TD_LINK,
+ sonic_tda_get(dev, entry, SONIC_TD_LINK) | SONIC_EOL);
+
+ /*
+ * Must set tx_skb[entry] only after clearing status, and
+ * before clearing EOL and before stopping queue
+ */
+ wmb();
+ lp->tx_len[entry] = length;
+ lp->tx_laddr[entry] = laddr;
+ lp->tx_skb[entry] = skb;
+
+ wmb();
+ sonic_tda_put(dev, lp->eol_tx, SONIC_TD_LINK,
+ sonic_tda_get(dev, lp->eol_tx, SONIC_TD_LINK) & ~SONIC_EOL);
+ lp->eol_tx = entry;
+
+ lp->next_tx = (entry + 1) & SONIC_TDS_MASK;
+ if (lp->tx_skb[lp->next_tx] != NULL) {
+ /* The ring is full, the ISR has yet to process the next TD. */
+ if (sonic_debug > 3)
+ printk("%s: stopping queue\n", dev->name);
+ netif_stop_queue(dev);
+ /* after this packet, wait for ISR to free up some TDAs */
+ } else netif_start_queue(dev);
+
+ if (sonic_debug > 2)
+ printk("sonic_send_packet: issuing Tx command\n");
+
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP);
+
+ return NETDEV_TX_OK;
+}
+
+/*
+ * The typical workload of the driver:
+ * Handle the network interface interrupts.
+ */
+static irqreturn_t sonic_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct sonic_local *lp = netdev_priv(dev);
+ int status;
+
+ if (!(status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT))
+ return IRQ_NONE;
+
+ do {
+ if (status & SONIC_INT_PKTRX) {
+ if (sonic_debug > 2)
+ printk("%s: packet rx\n", dev->name);
+ sonic_rx(dev); /* got packet(s) */
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_PKTRX); /* clear the interrupt */
+ }
+
+ if (status & SONIC_INT_TXDN) {
+ int entry = lp->cur_tx;
+ int td_status;
+ int freed_some = 0;
+
+ /* At this point, cur_tx is the index of a TD that is one of:
+ * unallocated/freed (status set & tx_skb[entry] clear)
+ * allocated and sent (status set & tx_skb[entry] set )
+ * allocated and not yet sent (status clear & tx_skb[entry] set )
+ * still being allocated by sonic_send_packet (status clear & tx_skb[entry] clear)
+ */
+
+ if (sonic_debug > 2)
+ printk("%s: tx done\n", dev->name);
+
+ while (lp->tx_skb[entry] != NULL) {
+ if ((td_status = sonic_tda_get(dev, entry, SONIC_TD_STATUS)) == 0)
+ break;
+
+ if (td_status & 0x0001) {
+ lp->stats.tx_packets++;
+ lp->stats.tx_bytes += sonic_tda_get(dev, entry, SONIC_TD_PKTSIZE);
+ } else {
+ lp->stats.tx_errors++;
+ if (td_status & 0x0642)
+ lp->stats.tx_aborted_errors++;
+ if (td_status & 0x0180)
+ lp->stats.tx_carrier_errors++;
+ if (td_status & 0x0020)
+ lp->stats.tx_window_errors++;
+ if (td_status & 0x0004)
+ lp->stats.tx_fifo_errors++;
+ }
+
+ /* We must free the original skb */
+ dev_kfree_skb_irq(lp->tx_skb[entry]);
+ lp->tx_skb[entry] = NULL;
+ /* and unmap DMA buffer */
+ dma_unmap_single(lp->device, lp->tx_laddr[entry], lp->tx_len[entry], DMA_TO_DEVICE);
+ lp->tx_laddr[entry] = (dma_addr_t)0;
+ freed_some = 1;
+
+ if (sonic_tda_get(dev, entry, SONIC_TD_LINK) & SONIC_EOL) {
+ entry = (entry + 1) & SONIC_TDS_MASK;
+ break;
+ }
+ entry = (entry + 1) & SONIC_TDS_MASK;
+ }
+
+ if (freed_some || lp->tx_skb[entry] == NULL)
+ netif_wake_queue(dev); /* The ring is no longer full */
+ lp->cur_tx = entry;
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_TXDN); /* clear the interrupt */
+ }
+
+ /*
+ * check error conditions
+ */
+ if (status & SONIC_INT_RFO) {
+ if (sonic_debug > 1)
+ printk("%s: rx fifo overrun\n", dev->name);
+ lp->stats.rx_fifo_errors++;
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_RFO); /* clear the interrupt */
+ }
+ if (status & SONIC_INT_RDE) {
+ if (sonic_debug > 1)
+ printk("%s: rx descriptors exhausted\n", dev->name);
+ lp->stats.rx_dropped++;
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_RDE); /* clear the interrupt */
+ }
+ if (status & SONIC_INT_RBAE) {
+ if (sonic_debug > 1)
+ printk("%s: rx buffer area exceeded\n", dev->name);
+ lp->stats.rx_dropped++;
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_RBAE); /* clear the interrupt */
+ }
+
+ /* counter overruns; all counters are 16bit wide */
+ if (status & SONIC_INT_FAE) {
+ lp->stats.rx_frame_errors += 65536;
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_FAE); /* clear the interrupt */
+ }
+ if (status & SONIC_INT_CRC) {
+ lp->stats.rx_crc_errors += 65536;
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_CRC); /* clear the interrupt */
+ }
+ if (status & SONIC_INT_MP) {
+ lp->stats.rx_missed_errors += 65536;
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_MP); /* clear the interrupt */
+ }
+
+ /* transmit error */
+ if (status & SONIC_INT_TXER) {
+ if ((SONIC_READ(SONIC_TCR) & SONIC_TCR_FU) && (sonic_debug > 2))
+ printk(KERN_ERR "%s: tx fifo underrun\n", dev->name);
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_TXER); /* clear the interrupt */
+ }
+
+ /* bus retry */
+ if (status & SONIC_INT_BR) {
+ printk(KERN_ERR "%s: Bus retry occurred! Device interrupt disabled.\n",
+ dev->name);
+ /* ... to help debug DMA problems causing endless interrupts. */
+ /* Bounce the eth interface to turn on the interrupt again. */
+ SONIC_WRITE(SONIC_IMR, 0);
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_BR); /* clear the interrupt */
+ }
+
+ /* load CAM done */
+ if (status & SONIC_INT_LCD)
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_LCD); /* clear the interrupt */
+ } while((status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT));
+ return IRQ_HANDLED;
+}
+
+/*
+ * We have a good packet(s), pass it/them up the network stack.
+ */
+static void sonic_rx(struct net_device *dev)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ int status;
+ int entry = lp->cur_rx;
+
+ while (sonic_rda_get(dev, entry, SONIC_RD_IN_USE) == 0) {
+ struct sk_buff *used_skb;
+ struct sk_buff *new_skb;
+ dma_addr_t new_laddr;
+ u16 bufadr_l;
+ u16 bufadr_h;
+ int pkt_len;
+
+ status = sonic_rda_get(dev, entry, SONIC_RD_STATUS);
+ if (status & SONIC_RCR_PRX) {
+ /* Malloc up new buffer. */
+ new_skb = dev_alloc_skb(SONIC_RBSIZE + 2);
+ if (new_skb == NULL) {
+ printk(KERN_ERR "%s: Memory squeeze, dropping packet.\n", dev->name);
+ lp->stats.rx_dropped++;
+ break;
+ }
+ /* provide 16 byte IP header alignment unless DMA requires otherwise */
+ if(SONIC_BUS_SCALE(lp->dma_bitmode) == 2)
+ skb_reserve(new_skb, 2);
+
+ new_laddr = dma_map_single(lp->device, skb_put(new_skb, SONIC_RBSIZE),
+ SONIC_RBSIZE, DMA_FROM_DEVICE);
+ if (!new_laddr) {
+ dev_kfree_skb(new_skb);
+ printk(KERN_ERR "%s: Failed to map rx buffer, dropping packet.\n", dev->name);
+ lp->stats.rx_dropped++;
+ break;
+ }
+
+ /* now we have a new skb to replace it, pass the used one up the stack */
+ dma_unmap_single(lp->device, lp->rx_laddr[entry], SONIC_RBSIZE, DMA_FROM_DEVICE);
+ used_skb = lp->rx_skb[entry];
+ pkt_len = sonic_rda_get(dev, entry, SONIC_RD_PKTLEN);
+ skb_trim(used_skb, pkt_len);
+ used_skb->protocol = eth_type_trans(used_skb, dev);
+ netif_rx(used_skb);
+ lp->stats.rx_packets++;
+ lp->stats.rx_bytes += pkt_len;
+
+ /* and insert the new skb */
+ lp->rx_laddr[entry] = new_laddr;
+ lp->rx_skb[entry] = new_skb;
+
+ bufadr_l = (unsigned long)new_laddr & 0xffff;
+ bufadr_h = (unsigned long)new_laddr >> 16;
+ sonic_rra_put(dev, entry, SONIC_RR_BUFADR_L, bufadr_l);
+ sonic_rra_put(dev, entry, SONIC_RR_BUFADR_H, bufadr_h);
+ } else {
+ /* This should only happen, if we enable accepting broken packets. */
+ lp->stats.rx_errors++;
+ if (status & SONIC_RCR_FAER)
+ lp->stats.rx_frame_errors++;
+ if (status & SONIC_RCR_CRCR)
+ lp->stats.rx_crc_errors++;
+ }
+ if (status & SONIC_RCR_LPKT) {
+ /*
+ * this was the last packet out of the current receive buffer
+ * give the buffer back to the SONIC
+ */
+ lp->cur_rwp += SIZEOF_SONIC_RR * SONIC_BUS_SCALE(lp->dma_bitmode);
+ if (lp->cur_rwp >= lp->rra_end) lp->cur_rwp = lp->rra_laddr & 0xffff;
+ SONIC_WRITE(SONIC_RWP, lp->cur_rwp);
+ if (SONIC_READ(SONIC_ISR) & SONIC_INT_RBE) {
+ if (sonic_debug > 2)
+ printk("%s: rx buffer exhausted\n", dev->name);
+ SONIC_WRITE(SONIC_ISR, SONIC_INT_RBE); /* clear the flag */
+ }
+ } else
+ printk(KERN_ERR "%s: rx desc without RCR_LPKT. Shouldn't happen !?\n",
+ dev->name);
+ /*
+ * give back the descriptor
+ */
+ sonic_rda_put(dev, entry, SONIC_RD_LINK,
+ sonic_rda_get(dev, entry, SONIC_RD_LINK) | SONIC_EOL);
+ sonic_rda_put(dev, entry, SONIC_RD_IN_USE, 1);
+ sonic_rda_put(dev, lp->eol_rx, SONIC_RD_LINK,
+ sonic_rda_get(dev, lp->eol_rx, SONIC_RD_LINK) & ~SONIC_EOL);
+ lp->eol_rx = entry;
+ lp->cur_rx = entry = (entry + 1) & SONIC_RDS_MASK;
+ }
+ /*
+ * If any worth-while packets have been received, netif_rx()
+ * has done a mark_bh(NET_BH) for us and will work on them
+ * when we get to the bottom-half routine.
+ */
+}
+
+
+/*
+ * Get the current statistics.
+ * This may be called with the device open or closed.
+ */
+static struct net_device_stats *sonic_get_stats(struct net_device *dev)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+
+ /* read the tally counter from the SONIC and reset them */
+ lp->stats.rx_crc_errors += SONIC_READ(SONIC_CRCT);
+ SONIC_WRITE(SONIC_CRCT, 0xffff);
+ lp->stats.rx_frame_errors += SONIC_READ(SONIC_FAET);
+ SONIC_WRITE(SONIC_FAET, 0xffff);
+ lp->stats.rx_missed_errors += SONIC_READ(SONIC_MPT);
+ SONIC_WRITE(SONIC_MPT, 0xffff);
+
+ return &lp->stats;
+}
+
+
+/*
+ * Set or clear the multicast filter for this adaptor.
+ */
+static void sonic_multicast_list(struct net_device *dev)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ unsigned int rcr;
+ struct netdev_hw_addr *ha;
+ unsigned char *addr;
+ int i;
+
+ rcr = SONIC_READ(SONIC_RCR) & ~(SONIC_RCR_PRO | SONIC_RCR_AMC);
+ rcr |= SONIC_RCR_BRD; /* accept broadcast packets */
+
+ if (dev->flags & IFF_PROMISC) { /* set promiscuous mode */
+ rcr |= SONIC_RCR_PRO;
+ } else {
+ if ((dev->flags & IFF_ALLMULTI) ||
+ (netdev_mc_count(dev) > 15)) {
+ rcr |= SONIC_RCR_AMC;
+ } else {
+ if (sonic_debug > 2)
+ printk("sonic_multicast_list: mc_count %d\n",
+ netdev_mc_count(dev));
+ sonic_set_cam_enable(dev, 1); /* always enable our own address */
+ i = 1;
+ netdev_for_each_mc_addr(ha, dev) {
+ addr = ha->addr;
+ sonic_cda_put(dev, i, SONIC_CD_CAP0, addr[1] << 8 | addr[0]);
+ sonic_cda_put(dev, i, SONIC_CD_CAP1, addr[3] << 8 | addr[2]);
+ sonic_cda_put(dev, i, SONIC_CD_CAP2, addr[5] << 8 | addr[4]);
+ sonic_set_cam_enable(dev, sonic_get_cam_enable(dev) | (1 << i));
+ i++;
+ }
+ SONIC_WRITE(SONIC_CDC, 16);
+ /* issue Load CAM command */
+ SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff);
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM);
+ }
+ }
+
+ if (sonic_debug > 2)
+ printk("sonic_multicast_list: setting RCR=%x\n", rcr);
+
+ SONIC_WRITE(SONIC_RCR, rcr);
+}
+
+
+/*
+ * Initialize the SONIC ethernet controller.
+ */
+static int sonic_init(struct net_device *dev)
+{
+ unsigned int cmd;
+ struct sonic_local *lp = netdev_priv(dev);
+ int i;
+
+ /*
+ * put the Sonic into software-reset mode and
+ * disable all interrupts
+ */
+ SONIC_WRITE(SONIC_IMR, 0);
+ SONIC_WRITE(SONIC_ISR, 0x7fff);
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
+
+ /*
+ * clear software reset flag, disable receiver, clear and
+ * enable interrupts, then completely initialize the SONIC
+ */
+ SONIC_WRITE(SONIC_CMD, 0);
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_RXDIS);
+
+ /*
+ * initialize the receive resource area
+ */
+ if (sonic_debug > 2)
+ printk("sonic_init: initialize receive resource area\n");
+
+ for (i = 0; i < SONIC_NUM_RRS; i++) {
+ u16 bufadr_l = (unsigned long)lp->rx_laddr[i] & 0xffff;
+ u16 bufadr_h = (unsigned long)lp->rx_laddr[i] >> 16;
+ sonic_rra_put(dev, i, SONIC_RR_BUFADR_L, bufadr_l);
+ sonic_rra_put(dev, i, SONIC_RR_BUFADR_H, bufadr_h);
+ sonic_rra_put(dev, i, SONIC_RR_BUFSIZE_L, SONIC_RBSIZE >> 1);
+ sonic_rra_put(dev, i, SONIC_RR_BUFSIZE_H, 0);
+ }
+
+ /* initialize all RRA registers */
+ lp->rra_end = (lp->rra_laddr + SONIC_NUM_RRS * SIZEOF_SONIC_RR *
+ SONIC_BUS_SCALE(lp->dma_bitmode)) & 0xffff;
+ lp->cur_rwp = (lp->rra_laddr + (SONIC_NUM_RRS - 1) * SIZEOF_SONIC_RR *
+ SONIC_BUS_SCALE(lp->dma_bitmode)) & 0xffff;
+
+ SONIC_WRITE(SONIC_RSA, lp->rra_laddr & 0xffff);
+ SONIC_WRITE(SONIC_REA, lp->rra_end);
+ SONIC_WRITE(SONIC_RRP, lp->rra_laddr & 0xffff);
+ SONIC_WRITE(SONIC_RWP, lp->cur_rwp);
+ SONIC_WRITE(SONIC_URRA, lp->rra_laddr >> 16);
+ SONIC_WRITE(SONIC_EOBC, (SONIC_RBSIZE >> 1) - (lp->dma_bitmode ? 2 : 1));
+
+ /* load the resource pointers */
+ if (sonic_debug > 3)
+ printk("sonic_init: issuing RRRA command\n");
+
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_RRRA);
+ i = 0;
+ while (i++ < 100) {
+ if (SONIC_READ(SONIC_CMD) & SONIC_CR_RRRA)
+ break;
+ }
+
+ if (sonic_debug > 2)
+ printk("sonic_init: status=%x i=%d\n", SONIC_READ(SONIC_CMD), i);
+
+ /*
+ * Initialize the receive descriptors so that they
+ * become a circular linked list, ie. let the last
+ * descriptor point to the first again.
+ */
+ if (sonic_debug > 2)
+ printk("sonic_init: initialize receive descriptors\n");
+ for (i=0; i<SONIC_NUM_RDS; i++) {
+ sonic_rda_put(dev, i, SONIC_RD_STATUS, 0);
+ sonic_rda_put(dev, i, SONIC_RD_PKTLEN, 0);
+ sonic_rda_put(dev, i, SONIC_RD_PKTPTR_L, 0);
+ sonic_rda_put(dev, i, SONIC_RD_PKTPTR_H, 0);
+ sonic_rda_put(dev, i, SONIC_RD_SEQNO, 0);
+ sonic_rda_put(dev, i, SONIC_RD_IN_USE, 1);
+ sonic_rda_put(dev, i, SONIC_RD_LINK,
+ lp->rda_laddr +
+ ((i+1) * SIZEOF_SONIC_RD * SONIC_BUS_SCALE(lp->dma_bitmode)));
+ }
+ /* fix last descriptor */
+ sonic_rda_put(dev, SONIC_NUM_RDS - 1, SONIC_RD_LINK,
+ (lp->rda_laddr & 0xffff) | SONIC_EOL);
+ lp->eol_rx = SONIC_NUM_RDS - 1;
+ lp->cur_rx = 0;
+ SONIC_WRITE(SONIC_URDA, lp->rda_laddr >> 16);
+ SONIC_WRITE(SONIC_CRDA, lp->rda_laddr & 0xffff);
+
+ /*
+ * initialize transmit descriptors
+ */
+ if (sonic_debug > 2)
+ printk("sonic_init: initialize transmit descriptors\n");
+ for (i = 0; i < SONIC_NUM_TDS; i++) {
+ sonic_tda_put(dev, i, SONIC_TD_STATUS, 0);
+ sonic_tda_put(dev, i, SONIC_TD_CONFIG, 0);
+ sonic_tda_put(dev, i, SONIC_TD_PKTSIZE, 0);
+ sonic_tda_put(dev, i, SONIC_TD_FRAG_COUNT, 0);
+ sonic_tda_put(dev, i, SONIC_TD_LINK,
+ (lp->tda_laddr & 0xffff) +
+ (i + 1) * SIZEOF_SONIC_TD * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->tx_skb[i] = NULL;
+ }
+ /* fix last descriptor */
+ sonic_tda_put(dev, SONIC_NUM_TDS - 1, SONIC_TD_LINK,
+ (lp->tda_laddr & 0xffff));
+
+ SONIC_WRITE(SONIC_UTDA, lp->tda_laddr >> 16);
+ SONIC_WRITE(SONIC_CTDA, lp->tda_laddr & 0xffff);
+ lp->cur_tx = lp->next_tx = 0;
+ lp->eol_tx = SONIC_NUM_TDS - 1;
+
+ /*
+ * put our own address to CAM desc[0]
+ */
+ sonic_cda_put(dev, 0, SONIC_CD_CAP0, dev->dev_addr[1] << 8 | dev->dev_addr[0]);
+ sonic_cda_put(dev, 0, SONIC_CD_CAP1, dev->dev_addr[3] << 8 | dev->dev_addr[2]);
+ sonic_cda_put(dev, 0, SONIC_CD_CAP2, dev->dev_addr[5] << 8 | dev->dev_addr[4]);
+ sonic_set_cam_enable(dev, 1);
+
+ for (i = 0; i < 16; i++)
+ sonic_cda_put(dev, i, SONIC_CD_ENTRY_POINTER, i);
+
+ /*
+ * initialize CAM registers
+ */
+ SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff);
+ SONIC_WRITE(SONIC_CDC, 16);
+
+ /*
+ * load the CAM
+ */
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM);
+
+ i = 0;
+ while (i++ < 100) {
+ if (SONIC_READ(SONIC_ISR) & SONIC_INT_LCD)
+ break;
+ }
+ if (sonic_debug > 2) {
+ printk("sonic_init: CMD=%x, ISR=%x\n, i=%d",
+ SONIC_READ(SONIC_CMD), SONIC_READ(SONIC_ISR), i);
+ }
+
+ /*
+ * enable receiver, disable loopback
+ * and enable all interrupts
+ */
+ SONIC_WRITE(SONIC_CMD, SONIC_CR_RXEN | SONIC_CR_STP);
+ SONIC_WRITE(SONIC_RCR, SONIC_RCR_DEFAULT);
+ SONIC_WRITE(SONIC_TCR, SONIC_TCR_DEFAULT);
+ SONIC_WRITE(SONIC_ISR, 0x7fff);
+ SONIC_WRITE(SONIC_IMR, SONIC_IMR_DEFAULT);
+
+ cmd = SONIC_READ(SONIC_CMD);
+ if ((cmd & SONIC_CR_RXEN) == 0 || (cmd & SONIC_CR_STP) == 0)
+ printk(KERN_ERR "sonic_init: failed, status=%x\n", cmd);
+
+ if (sonic_debug > 2)
+ printk("sonic_init: new status=%x\n",
+ SONIC_READ(SONIC_CMD));
+
+ return 0;
+}
+
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Header file for sonic.c
+ *
+ * (C) Waldorf Electronics, Germany
+ * Written by Andreas Busse
+ *
+ * NOTE: most of the structure definitions here are endian dependent.
+ * If you want to use this driver on big endian machines, the data
+ * and pad structure members must be exchanged. Also, the structures
+ * need to be changed accordingly to the bus size.
+ *
+ * 981229 MSch: did just that for the 68k Mac port (32 bit, big endian)
+ *
+ * 990611 David Huggins-Daines <dhd@debian.org>: This machine abstraction
+ * does not cope with 16-bit bus sizes very well. Therefore I have
+ * rewritten it with ugly macros and evil inlines.
+ *
+ * 050625 Finn Thain: introduced more 32-bit cards and dhd's support
+ * for 16-bit cards (from the mac68k project).
+ */
+
+#ifndef SONIC_H
+#define SONIC_H
+
+
+/*
+ * SONIC register offsets
+ */
+
+#define SONIC_CMD 0x00
+#define SONIC_DCR 0x01
+#define SONIC_RCR 0x02
+#define SONIC_TCR 0x03
+#define SONIC_IMR 0x04
+#define SONIC_ISR 0x05
+
+#define SONIC_UTDA 0x06
+#define SONIC_CTDA 0x07
+
+#define SONIC_URDA 0x0d
+#define SONIC_CRDA 0x0e
+#define SONIC_EOBC 0x13
+#define SONIC_URRA 0x14
+#define SONIC_RSA 0x15
+#define SONIC_REA 0x16
+#define SONIC_RRP 0x17
+#define SONIC_RWP 0x18
+#define SONIC_RSC 0x2b
+
+#define SONIC_CEP 0x21
+#define SONIC_CAP2 0x22
+#define SONIC_CAP1 0x23
+#define SONIC_CAP0 0x24
+#define SONIC_CE 0x25
+#define SONIC_CDP 0x26
+#define SONIC_CDC 0x27
+
+#define SONIC_WT0 0x29
+#define SONIC_WT1 0x2a
+
+#define SONIC_SR 0x28
+
+
+/* test-only registers */
+
+#define SONIC_TPS 0x08
+#define SONIC_TFC 0x09
+#define SONIC_TSA0 0x0a
+#define SONIC_TSA1 0x0b
+#define SONIC_TFS 0x0c
+
+#define SONIC_CRBA0 0x0f
+#define SONIC_CRBA1 0x10
+#define SONIC_RBWC0 0x11
+#define SONIC_RBWC1 0x12
+#define SONIC_TTDA 0x20
+#define SONIC_MDT 0x2f
+
+#define SONIC_TRBA0 0x19
+#define SONIC_TRBA1 0x1a
+#define SONIC_TBWC0 0x1b
+#define SONIC_TBWC1 0x1c
+#define SONIC_LLFA 0x1f
+
+#define SONIC_ADDR0 0x1d
+#define SONIC_ADDR1 0x1e
+
+/*
+ * Error counters
+ */
+
+#define SONIC_CRCT 0x2c
+#define SONIC_FAET 0x2d
+#define SONIC_MPT 0x2e
+
+#define SONIC_DCR2 0x3f
+
+/*
+ * SONIC command bits
+ */
+
+#define SONIC_CR_LCAM 0x0200
+#define SONIC_CR_RRRA 0x0100
+#define SONIC_CR_RST 0x0080
+#define SONIC_CR_ST 0x0020
+#define SONIC_CR_STP 0x0010
+#define SONIC_CR_RXEN 0x0008
+#define SONIC_CR_RXDIS 0x0004
+#define SONIC_CR_TXP 0x0002
+#define SONIC_CR_HTX 0x0001
+
+/*
+ * SONIC data configuration bits
+ */
+
+#define SONIC_DCR_EXBUS 0x8000
+#define SONIC_DCR_LBR 0x2000
+#define SONIC_DCR_PO1 0x1000
+#define SONIC_DCR_PO0 0x0800
+#define SONIC_DCR_SBUS 0x0400
+#define SONIC_DCR_USR1 0x0200
+#define SONIC_DCR_USR0 0x0100
+#define SONIC_DCR_WC1 0x0080
+#define SONIC_DCR_WC0 0x0040
+#define SONIC_DCR_DW 0x0020
+#define SONIC_DCR_BMS 0x0010
+#define SONIC_DCR_RFT1 0x0008
+#define SONIC_DCR_RFT0 0x0004
+#define SONIC_DCR_TFT1 0x0002
+#define SONIC_DCR_TFT0 0x0001
+
+/*
+ * Constants for the SONIC receive control register.
+ */
+
+#define SONIC_RCR_ERR 0x8000
+#define SONIC_RCR_RNT 0x4000
+#define SONIC_RCR_BRD 0x2000
+#define SONIC_RCR_PRO 0x1000
+#define SONIC_RCR_AMC 0x0800
+#define SONIC_RCR_LB1 0x0400
+#define SONIC_RCR_LB0 0x0200
+
+#define SONIC_RCR_MC 0x0100
+#define SONIC_RCR_BC 0x0080
+#define SONIC_RCR_LPKT 0x0040
+#define SONIC_RCR_CRS 0x0020
+#define SONIC_RCR_COL 0x0010
+#define SONIC_RCR_CRCR 0x0008
+#define SONIC_RCR_FAER 0x0004
+#define SONIC_RCR_LBK 0x0002
+#define SONIC_RCR_PRX 0x0001
+
+#define SONIC_RCR_LB_OFF 0
+#define SONIC_RCR_LB_MAC SONIC_RCR_LB0
+#define SONIC_RCR_LB_ENDEC SONIC_RCR_LB1
+#define SONIC_RCR_LB_TRANS (SONIC_RCR_LB0 | SONIC_RCR_LB1)
+
+/* default RCR setup */
+
+#define SONIC_RCR_DEFAULT (SONIC_RCR_BRD)
+
+
+/*
+ * SONIC Transmit Control register bits
+ */
+
+#define SONIC_TCR_PINTR 0x8000
+#define SONIC_TCR_POWC 0x4000
+#define SONIC_TCR_CRCI 0x2000
+#define SONIC_TCR_EXDIS 0x1000
+#define SONIC_TCR_EXD 0x0400
+#define SONIC_TCR_DEF 0x0200
+#define SONIC_TCR_NCRS 0x0100
+#define SONIC_TCR_CRLS 0x0080
+#define SONIC_TCR_EXC 0x0040
+#define SONIC_TCR_PMB 0x0008
+#define SONIC_TCR_FU 0x0004
+#define SONIC_TCR_BCM 0x0002
+#define SONIC_TCR_PTX 0x0001
+
+#define SONIC_TCR_DEFAULT 0x0000
+
+/*
+ * Constants for the SONIC_INTERRUPT_MASK and
+ * SONIC_INTERRUPT_STATUS registers.
+ */
+
+#define SONIC_INT_BR 0x4000
+#define SONIC_INT_HBL 0x2000
+#define SONIC_INT_LCD 0x1000
+#define SONIC_INT_PINT 0x0800
+#define SONIC_INT_PKTRX 0x0400
+#define SONIC_INT_TXDN 0x0200
+#define SONIC_INT_TXER 0x0100
+#define SONIC_INT_TC 0x0080
+#define SONIC_INT_RDE 0x0040
+#define SONIC_INT_RBE 0x0020
+#define SONIC_INT_RBAE 0x0010
+#define SONIC_INT_CRC 0x0008
+#define SONIC_INT_FAE 0x0004
+#define SONIC_INT_MP 0x0002
+#define SONIC_INT_RFO 0x0001
+
+
+/*
+ * The interrupts we allow.
+ */
+
+#define SONIC_IMR_DEFAULT ( SONIC_INT_BR | \
+ SONIC_INT_LCD | \
+ SONIC_INT_RFO | \
+ SONIC_INT_PKTRX | \
+ SONIC_INT_TXDN | \
+ SONIC_INT_TXER | \
+ SONIC_INT_RDE | \
+ SONIC_INT_RBAE | \
+ SONIC_INT_CRC | \
+ SONIC_INT_FAE | \
+ SONIC_INT_MP)
+
+
+#define SONIC_EOL 0x0001
+#define CAM_DESCRIPTORS 16
+
+/* Offsets in the various DMA buffers accessed by the SONIC */
+
+#define SONIC_BITMODE16 0
+#define SONIC_BITMODE32 1
+#define SONIC_BUS_SCALE(bitmode) ((bitmode) ? 4 : 2)
+/* Note! These are all measured in bus-size units, so use SONIC_BUS_SCALE */
+#define SIZEOF_SONIC_RR 4
+#define SONIC_RR_BUFADR_L 0
+#define SONIC_RR_BUFADR_H 1
+#define SONIC_RR_BUFSIZE_L 2
+#define SONIC_RR_BUFSIZE_H 3
+
+#define SIZEOF_SONIC_RD 7
+#define SONIC_RD_STATUS 0
+#define SONIC_RD_PKTLEN 1
+#define SONIC_RD_PKTPTR_L 2
+#define SONIC_RD_PKTPTR_H 3
+#define SONIC_RD_SEQNO 4
+#define SONIC_RD_LINK 5
+#define SONIC_RD_IN_USE 6
+
+#define SIZEOF_SONIC_TD 8
+#define SONIC_TD_STATUS 0
+#define SONIC_TD_CONFIG 1
+#define SONIC_TD_PKTSIZE 2
+#define SONIC_TD_FRAG_COUNT 3
+#define SONIC_TD_FRAG_PTR_L 4
+#define SONIC_TD_FRAG_PTR_H 5
+#define SONIC_TD_FRAG_SIZE 6
+#define SONIC_TD_LINK 7
+
+#define SIZEOF_SONIC_CD 4
+#define SONIC_CD_ENTRY_POINTER 0
+#define SONIC_CD_CAP0 1
+#define SONIC_CD_CAP1 2
+#define SONIC_CD_CAP2 3
+
+#define SIZEOF_SONIC_CDA ((CAM_DESCRIPTORS * SIZEOF_SONIC_CD) + 1)
+#define SONIC_CDA_CAM_ENABLE (CAM_DESCRIPTORS * SIZEOF_SONIC_CD)
+
+/*
+ * Some tunables for the buffer areas. Power of 2 is required
+ * the current driver uses one receive buffer for each descriptor.
+ *
+ * MSch: use more buffer space for the slow m68k Macs!
+ */
+#define SONIC_NUM_RRS 16 /* number of receive resources */
+#define SONIC_NUM_RDS SONIC_NUM_RRS /* number of receive descriptors */
+#define SONIC_NUM_TDS 16 /* number of transmit descriptors */
+
+#define SONIC_RDS_MASK (SONIC_NUM_RDS-1)
+#define SONIC_TDS_MASK (SONIC_NUM_TDS-1)
+
+#define SONIC_RBSIZE 1520 /* size of one resource buffer */
+
+/* Again, measured in bus size units! */
+#define SIZEOF_SONIC_DESC (SIZEOF_SONIC_CDA \
+ + (SIZEOF_SONIC_TD * SONIC_NUM_TDS) \
+ + (SIZEOF_SONIC_RD * SONIC_NUM_RDS) \
+ + (SIZEOF_SONIC_RR * SONIC_NUM_RRS))
+
+/* Information that need to be kept for each board. */
+struct sonic_local {
+ /* Bus size. 0 == 16 bits, 1 == 32 bits. */
+ int dma_bitmode;
+ /* Register offset within the longword (independent of endianness,
+ and varies from one type of Macintosh SONIC to another
+ (Aarrgh)) */
+ int reg_offset;
+ void *descriptors;
+ /* Crud. These areas have to be within the same 64K. Therefore
+ we allocate a desriptors page, and point these to places within it. */
+ void *cda; /* CAM descriptor area */
+ void *tda; /* Transmit descriptor area */
+ void *rra; /* Receive resource area */
+ void *rda; /* Receive descriptor area */
+ struct sk_buff* volatile rx_skb[SONIC_NUM_RRS]; /* packets to be received */
+ struct sk_buff* volatile tx_skb[SONIC_NUM_TDS]; /* packets to be transmitted */
+ unsigned int tx_len[SONIC_NUM_TDS]; /* lengths of tx DMA mappings */
+ /* Logical DMA addresses on MIPS, bus addresses on m68k
+ * (so "laddr" is a bit misleading) */
+ dma_addr_t descriptors_laddr;
+ u32 cda_laddr; /* logical DMA address of CDA */
+ u32 tda_laddr; /* logical DMA address of TDA */
+ u32 rra_laddr; /* logical DMA address of RRA */
+ u32 rda_laddr; /* logical DMA address of RDA */
+ dma_addr_t rx_laddr[SONIC_NUM_RRS]; /* logical DMA addresses of rx skbuffs */
+ dma_addr_t tx_laddr[SONIC_NUM_TDS]; /* logical DMA addresses of tx skbuffs */
+ unsigned int rra_end;
+ unsigned int cur_rwp;
+ unsigned int cur_rx;
+ unsigned int cur_tx; /* first unacked transmit packet */
+ unsigned int eol_rx;
+ unsigned int eol_tx; /* last unacked transmit packet */
+ unsigned int next_tx; /* next free TD */
+ struct device *device; /* generic device */
+ struct net_device_stats stats;
+};
+
+#define TX_TIMEOUT (3 * HZ)
+
+/* Index to functions, as function prototypes. */
+
+static int sonic_open(struct net_device *dev);
+static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t sonic_interrupt(int irq, void *dev_id);
+static void sonic_rx(struct net_device *dev);
+static int sonic_close(struct net_device *dev);
+static struct net_device_stats *sonic_get_stats(struct net_device *dev);
+static void sonic_multicast_list(struct net_device *dev);
+static int sonic_init(struct net_device *dev);
+static void sonic_tx_timeout(struct net_device *dev);
+
+/* Internal inlines for reading/writing DMA buffers. Note that bus
+ size and endianness matter here, whereas they don't for registers,
+ as far as we can tell. */
+/* OpenBSD calls this "SWO". I'd like to think that sonic_buf_put()
+ is a much better name. */
+static inline void sonic_buf_put(void* base, int bitmode,
+ int offset, __u16 val)
+{
+ if (bitmode)
+#ifdef __BIG_ENDIAN
+ ((__u16 *) base + (offset*2))[1] = val;
+#else
+ ((__u16 *) base + (offset*2))[0] = val;
+#endif
+ else
+ ((__u16 *) base)[offset] = val;
+}
+
+static inline __u16 sonic_buf_get(void* base, int bitmode,
+ int offset)
+{
+ if (bitmode)
+#ifdef __BIG_ENDIAN
+ return ((volatile __u16 *) base + (offset*2))[1];
+#else
+ return ((volatile __u16 *) base + (offset*2))[0];
+#endif
+ else
+ return ((volatile __u16 *) base)[offset];
+}
+
+/* Inlines that you should actually use for reading/writing DMA buffers */
+static inline void sonic_cda_put(struct net_device* dev, int entry,
+ int offset, __u16 val)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ sonic_buf_put(lp->cda, lp->dma_bitmode,
+ (entry * SIZEOF_SONIC_CD) + offset, val);
+}
+
+static inline __u16 sonic_cda_get(struct net_device* dev, int entry,
+ int offset)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ return sonic_buf_get(lp->cda, lp->dma_bitmode,
+ (entry * SIZEOF_SONIC_CD) + offset);
+}
+
+static inline void sonic_set_cam_enable(struct net_device* dev, __u16 val)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ sonic_buf_put(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE, val);
+}
+
+static inline __u16 sonic_get_cam_enable(struct net_device* dev)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ return sonic_buf_get(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE);
+}
+
+static inline void sonic_tda_put(struct net_device* dev, int entry,
+ int offset, __u16 val)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ sonic_buf_put(lp->tda, lp->dma_bitmode,
+ (entry * SIZEOF_SONIC_TD) + offset, val);
+}
+
+static inline __u16 sonic_tda_get(struct net_device* dev, int entry,
+ int offset)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ return sonic_buf_get(lp->tda, lp->dma_bitmode,
+ (entry * SIZEOF_SONIC_TD) + offset);
+}
+
+static inline void sonic_rda_put(struct net_device* dev, int entry,
+ int offset, __u16 val)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ sonic_buf_put(lp->rda, lp->dma_bitmode,
+ (entry * SIZEOF_SONIC_RD) + offset, val);
+}
+
+static inline __u16 sonic_rda_get(struct net_device* dev, int entry,
+ int offset)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ return sonic_buf_get(lp->rda, lp->dma_bitmode,
+ (entry * SIZEOF_SONIC_RD) + offset);
+}
+
+static inline void sonic_rra_put(struct net_device* dev, int entry,
+ int offset, __u16 val)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ sonic_buf_put(lp->rra, lp->dma_bitmode,
+ (entry * SIZEOF_SONIC_RR) + offset, val);
+}
+
+static inline __u16 sonic_rra_get(struct net_device* dev, int entry,
+ int offset)
+{
+ struct sonic_local *lp = netdev_priv(dev);
+ return sonic_buf_get(lp->rra, lp->dma_bitmode,
+ (entry * SIZEOF_SONIC_RR) + offset);
+}
+
+static const char *version =
+ "sonic.c:v0.92 20.9.98 tsbogend@alpha.franken.de\n";
+
+#endif /* SONIC_H */
--- /dev/null
+/*
+ * xtsonic.c
+ *
+ * (C) 2001 - 2007 Tensilica Inc.
+ * Kevin Chea <kchea@yahoo.com>
+ * Marc Gauthier <marc@linux-xtensa.org>
+ * Chris Zankel <chris@zankel.net>
+ *
+ * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
+ *
+ * This driver is based on work from Andreas Busse, but most of
+ * the code is rewritten.
+ *
+ * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
+ *
+ * A driver for the onboard Sonic ethernet controller on the XT2000.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/gfp.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/dma.h>
+
+static char xtsonic_string[] = "xtsonic";
+
+extern unsigned xtboard_nvram_valid(void);
+extern void xtboard_get_ether_addr(unsigned char *buf);
+
+#include "sonic.h"
+
+/*
+ * According to the documentation for the Sonic ethernet controller,
+ * EOBC should be 760 words (1520 bytes) for 32-bit applications, and,
+ * as such, 2 words less than the buffer size. The value for RBSIZE
+ * defined in sonic.h, however is only 1520.
+ *
+ * (Note that in 16-bit configurations, EOBC is 759 words (1518 bytes) and
+ * RBSIZE 1520 bytes)
+ */
+#undef SONIC_RBSIZE
+#define SONIC_RBSIZE 1524
+
+/*
+ * The chip provides 256 byte register space.
+ */
+#define SONIC_MEM_SIZE 0x100
+
+/*
+ * Macros to access SONIC registers
+ */
+#define SONIC_READ(reg) \
+ (0xffff & *((volatile unsigned int *)dev->base_addr+reg))
+
+#define SONIC_WRITE(reg,val) \
+ *((volatile unsigned int *)dev->base_addr+reg) = val
+
+
+/* Use 0 for production, 1 for verification, and >2 for debug */
+#ifdef SONIC_DEBUG
+static unsigned int sonic_debug = SONIC_DEBUG;
+#else
+static unsigned int sonic_debug = 1;
+#endif
+
+/*
+ * We cannot use station (ethernet) address prefixes to detect the
+ * sonic controller since these are board manufacturer depended.
+ * So we check for known Silicon Revision IDs instead.
+ */
+static unsigned short known_revisions[] =
+{
+ 0x101, /* SONIC 83934 */
+ 0xffff /* end of list */
+};
+
+static int xtsonic_open(struct net_device *dev)
+{
+ int retval;
+
+ retval = request_irq(dev->irq, sonic_interrupt, IRQF_DISABLED,
+ "sonic", dev);
+ if (retval) {
+ printk(KERN_ERR "%s: unable to get IRQ %d.\n",
+ dev->name, dev->irq);
+ return -EAGAIN;
+ }
+
+ retval = sonic_open(dev);
+ if (retval)
+ free_irq(dev->irq, dev);
+ return retval;
+}
+
+static int xtsonic_close(struct net_device *dev)
+{
+ int err;
+ err = sonic_close(dev);
+ free_irq(dev->irq, dev);
+ return err;
+}
+
+static const struct net_device_ops xtsonic_netdev_ops = {
+ .ndo_open = xtsonic_open,
+ .ndo_stop = xtsonic_close,
+ .ndo_start_xmit = sonic_send_packet,
+ .ndo_get_stats = sonic_get_stats,
+ .ndo_set_multicast_list = sonic_multicast_list,
+ .ndo_tx_timeout = sonic_tx_timeout,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+};
+
+static int __init sonic_probe1(struct net_device *dev)
+{
+ static unsigned version_printed = 0;
+ unsigned int silicon_revision;
+ struct sonic_local *lp = netdev_priv(dev);
+ unsigned int base_addr = dev->base_addr;
+ int i;
+ int err = 0;
+
+ if (!request_mem_region(base_addr, 0x100, xtsonic_string))
+ return -EBUSY;
+
+ /*
+ * get the Silicon Revision ID. If this is one of the known
+ * one assume that we found a SONIC ethernet controller at
+ * the expected location.
+ */
+ silicon_revision = SONIC_READ(SONIC_SR);
+ if (sonic_debug > 1)
+ printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);
+
+ i = 0;
+ while ((known_revisions[i] != 0xffff) &&
+ (known_revisions[i] != silicon_revision))
+ i++;
+
+ if (known_revisions[i] == 0xffff) {
+ printk("SONIC ethernet controller not found (0x%4x)\n",
+ silicon_revision);
+ return -ENODEV;
+ }
+
+ if (sonic_debug && version_printed++ == 0)
+ printk(version);
+
+ /*
+ * Put the sonic into software reset, then retrieve ethernet address.
+ * Note: we are assuming that the boot-loader has initialized the cam.
+ */
+ SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
+ SONIC_WRITE(SONIC_DCR,
+ SONIC_DCR_WC0|SONIC_DCR_DW|SONIC_DCR_LBR|SONIC_DCR_SBUS);
+ SONIC_WRITE(SONIC_CEP,0);
+ SONIC_WRITE(SONIC_IMR,0);
+
+ SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
+ SONIC_WRITE(SONIC_CEP,0);
+
+ for (i=0; i<3; i++) {
+ unsigned int val = SONIC_READ(SONIC_CAP0-i);
+ dev->dev_addr[i*2] = val;
+ dev->dev_addr[i*2+1] = val >> 8;
+ }
+
+ /* Initialize the device structure. */
+
+ lp->dma_bitmode = SONIC_BITMODE32;
+
+ /*
+ * Allocate local private descriptor areas in uncached space.
+ * The entire structure must be located within the same 64kb segment.
+ * A simple way to ensure this is to allocate twice the
+ * size of the structure -- given that the structure is
+ * much less than 64 kB, at least one of the halves of
+ * the allocated area will be contained entirely in 64 kB.
+ * We also allocate extra space for a pointer to allow freeing
+ * this structure later on (in xtsonic_cleanup_module()).
+ */
+ lp->descriptors =
+ dma_alloc_coherent(lp->device,
+ SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+ &lp->descriptors_laddr, GFP_KERNEL);
+
+ if (lp->descriptors == NULL) {
+ printk(KERN_ERR "%s: couldn't alloc DMA memory for "
+ " descriptors.\n", dev_name(lp->device));
+ goto out;
+ }
+
+ lp->cda = lp->descriptors;
+ lp->tda = lp->cda + (SIZEOF_SONIC_CDA
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+ /* get the virtual dma address */
+
+ lp->cda_laddr = lp->descriptors_laddr;
+ lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+ dev->netdev_ops = &xtsonic_netdev_ops;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ /*
+ * clear tally counter
+ */
+ SONIC_WRITE(SONIC_CRCT,0xffff);
+ SONIC_WRITE(SONIC_FAET,0xffff);
+ SONIC_WRITE(SONIC_MPT,0xffff);
+
+ return 0;
+out:
+ release_region(dev->base_addr, SONIC_MEM_SIZE);
+ return err;
+}
+
+
+/*
+ * Probe for a SONIC ethernet controller on an XT2000 board.
+ * Actually probing is superfluous but we're paranoid.
+ */
+
+int __devinit xtsonic_probe(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct sonic_local *lp;
+ struct resource *resmem, *resirq;
+ int err = 0;
+
+ if ((resmem = platform_get_resource(pdev, IORESOURCE_MEM, 0)) == NULL)
+ return -ENODEV;
+
+ if ((resirq = platform_get_resource(pdev, IORESOURCE_IRQ, 0)) == NULL)
+ return -ENODEV;
+
+ if ((dev = alloc_etherdev(sizeof(struct sonic_local))) == NULL)
+ return -ENOMEM;
+
+ lp = netdev_priv(dev);
+ lp->device = &pdev->dev;
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ netdev_boot_setup_check(dev);
+
+ dev->base_addr = resmem->start;
+ dev->irq = resirq->start;
+
+ if ((err = sonic_probe1(dev)))
+ goto out;
+ if ((err = register_netdev(dev)))
+ goto out1;
+
+ printk("%s: SONIC ethernet @%08lx, MAC %pM, IRQ %d\n", dev->name,
+ dev->base_addr, dev->dev_addr, dev->irq);
+
+ return 0;
+
+out1:
+ release_region(dev->base_addr, SONIC_MEM_SIZE);
+out:
+ free_netdev(dev);
+
+ return err;
+}
+
+MODULE_DESCRIPTION("Xtensa XT2000 SONIC ethernet driver");
+module_param(sonic_debug, int, 0);
+MODULE_PARM_DESC(sonic_debug, "xtsonic debug level (1-4)");
+
+#include "sonic.c"
+
+static int __devexit xtsonic_device_remove (struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct sonic_local *lp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ dma_free_coherent(lp->device,
+ SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+ lp->descriptors, lp->descriptors_laddr);
+ release_region (dev->base_addr, SONIC_MEM_SIZE);
+ free_netdev(dev);
+
+ return 0;
+}
+
+static struct platform_driver xtsonic_driver = {
+ .probe = xtsonic_probe,
+ .remove = __devexit_p(xtsonic_device_remove),
+ .driver = {
+ .name = xtsonic_string,
+ },
+};
+
+static int __init xtsonic_init(void)
+{
+ return platform_driver_register(&xtsonic_driver);
+}
+
+static void __exit xtsonic_cleanup(void)
+{
+ platform_driver_unregister(&xtsonic_driver);
+}
+
+module_init(xtsonic_init);
+module_exit(xtsonic_cleanup);
+++ /dev/null
-/*
-net-3-driver for the IBM LAN Adapter/A
-
-This is an extension to the Linux operating system, and is covered by the
-same GNU General Public License that covers that work.
-
-Copyright 1999 by Alfred Arnold (alfred@ccac.rwth-aachen.de,
- alfred.arnold@lancom.de)
-
-This driver is based both on the SK_MCA driver, which is itself based on the
-SK_G16 and 3C523 driver.
-
-paper sources:
- 'PC Hardware: Aufbau, Funktionsweise, Programmierung' by
- Hans-Peter Messmer for the basic Microchannel stuff
-
- 'Linux Geraetetreiber' by Allesandro Rubini, Kalle Dalheimer
- for help on Ethernet driver programming
-
- 'DP83934CVUL-20/25 MHz SONIC-T Ethernet Controller Datasheet' by National
- Semiconductor for info on the MAC chip
-
- 'LAN Technical Reference Ethernet Adapter Interface Version 1 Release 1.0
- Document Number SC30-3661-00' by IBM for info on the adapter itself
-
- Also see http://www.national.com/analog
-
-special acknowledgements to:
- - Bob Eager for helping me out with documentation from IBM
- - Jim Shorney for his endless patience with me while I was using
- him as a beta tester to trace down the address filter bug ;-)
-
- Missing things:
-
- -> set debug level via ioctl instead of compile-time switches
- -> I didn't follow the development of the 2.1.x kernels, so my
- assumptions about which things changed with which kernel version
- are probably nonsense
-
-History:
- Nov 6th, 1999
- startup from SK_MCA driver
- Dec 6th, 1999
- finally got docs about the card. A big thank you to Bob Eager!
- Dec 12th, 1999
- first packet received
- Dec 13th, 1999
- recv queue done, tcpdump works
- Dec 15th, 1999
- transmission part works
- Dec 28th, 1999
- added usage of the isa_functions for Linux 2.3 . Things should
- still work with 2.0.x....
- Jan 28th, 2000
- in Linux 2.2.13, the version.h file mysteriously didn't get
- included. Added a workaround for this. Furthermore, it now
- not only compiles as a modules ;-)
- Jan 30th, 2000
- newer kernels automatically probe more than one board, so the
- 'startslot' as a variable is also needed here
- Apr 12th, 2000
- the interrupt mask register is not set 'hard' instead of individually
- setting registers, since this seems to set bits that shouldn't be
- set
- May 21st, 2000
- reset interrupt status immediately after CAM load
- add a recovery delay after releasing the chip's reset line
- May 24th, 2000
- finally found the bug in the address filter setup - damned signed
- chars!
- June 1st, 2000
- corrected version codes, added support for the latest 2.3 changes
- Oct 28th, 2002
- cleaned up for the 2.5 tree <alan@lxorguk.ukuu.org.uk>
-
- *************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/time.h>
-#include <linux/mca.h>
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/if_ether.h>
-#include <linux/skbuff.h>
-#include <linux/bitops.h>
-
-#include <asm/processor.h>
-#include <asm/io.h>
-
-#define _IBM_LANA_DRIVER_
-#include "ibmlana.h"
-
-#undef DEBUG
-
-#define DRV_NAME "ibmlana"
-
-/* ------------------------------------------------------------------------
- * global static data - not more since we can handle multiple boards and
- * have to pack all state info into the device struct!
- * ------------------------------------------------------------------------ */
-
-static char *MediaNames[Media_Count] = {
- "10BaseT", "10Base5", "Unknown", "10Base2"
-};
-
-/* ------------------------------------------------------------------------
- * private subfunctions
- * ------------------------------------------------------------------------ */
-
-#ifdef DEBUG
- /* dump all registers */
-
-static void dumpregs(struct net_device *dev)
-{
- int z;
-
- for (z = 0; z < 160; z += 2) {
- if (!(z & 15))
- printk("REGS: %04x:", z);
- printk(" %04x", inw(dev->base_addr + z));
- if ((z & 15) == 14)
- printk("\n");
- }
-}
-
-/* dump parts of shared memory - only needed during debugging */
-
-static void dumpmem(struct net_device *dev, u32 start, u32 len)
-{
- ibmlana_priv *priv = netdev_priv(dev);
- int z;
-
- printk("Address %04x:\n", start);
- for (z = 0; z < len; z++) {
- if ((z & 15) == 0)
- printk("%04x:", z);
- printk(" %02x", readb(priv->base + start + z));
- if ((z & 15) == 15)
- printk("\n");
- }
- if ((z & 15) != 0)
- printk("\n");
-}
-
-/* print exact time - ditto */
-
-static void PrTime(void)
-{
- struct timeval tv;
-
- do_gettimeofday(&tv);
- printk("%9d:%06d: ", (int) tv.tv_sec, (int) tv.tv_usec);
-}
-#endif /* DEBUG */
-
-/* deduce resources out of POS registers */
-
-static void getaddrs(struct mca_device *mdev, int *base, int *memlen,
- int *iobase, int *irq, ibmlana_medium *medium)
-{
- u_char pos0, pos1;
-
- pos0 = mca_device_read_stored_pos(mdev, 2);
- pos1 = mca_device_read_stored_pos(mdev, 3);
-
- *base = 0xc0000 + ((pos1 & 0xf0) << 9);
- *memlen = (pos1 & 0x01) ? 0x8000 : 0x4000;
- *iobase = (pos0 & 0xe0) << 7;
- switch (pos0 & 0x06) {
- case 0:
- *irq = 5;
- break;
- case 2:
- *irq = 15;
- break;
- case 4:
- *irq = 10;
- break;
- case 6:
- *irq = 11;
- break;
- }
- *medium = (pos0 & 0x18) >> 3;
-}
-
-/* wait on register value with mask and timeout */
-
-static int wait_timeout(struct net_device *dev, int regoffs, u16 mask,
- u16 value, int timeout)
-{
- unsigned long fin = jiffies + timeout;
-
- while (time_before(jiffies,fin))
- if ((inw(dev->base_addr + regoffs) & mask) == value)
- return 1;
-
- return 0;
-}
-
-
-/* reset the whole board */
-
-static void ResetBoard(struct net_device *dev)
-{
- unsigned char bcmval;
-
- /* read original board control value */
-
- bcmval = inb(dev->base_addr + BCMREG);
-
- /* set reset bit for a while */
-
- bcmval |= BCMREG_RESET;
- outb(bcmval, dev->base_addr + BCMREG);
- udelay(10);
- bcmval &= ~BCMREG_RESET;
- outb(bcmval, dev->base_addr + BCMREG);
-
- /* switch over to RAM again */
-
- bcmval |= BCMREG_RAMEN | BCMREG_RAMWIN;
- outb(bcmval, dev->base_addr + BCMREG);
-}
-
-/* calculate RAM layout & set up descriptors in RAM */
-
-static void InitDscrs(struct net_device *dev)
-{
- ibmlana_priv *priv = netdev_priv(dev);
- u32 addr, baddr, raddr;
- int z;
- tda_t tda;
- rda_t rda;
- rra_t rra;
-
- /* initialize RAM */
-
- memset_io(priv->base, 0xaa,
- dev->mem_start - dev->mem_start); /* XXX: typo? */
-
- /* setup n TX descriptors - independent of RAM size */
-
- priv->tdastart = addr = 0;
- priv->txbufstart = baddr = sizeof(tda_t) * TXBUFCNT;
- for (z = 0; z < TXBUFCNT; z++) {
- tda.status = 0;
- tda.config = 0;
- tda.length = 0;
- tda.fragcount = 1;
- tda.startlo = baddr;
- tda.starthi = 0;
- tda.fraglength = 0;
- if (z == TXBUFCNT - 1)
- tda.link = priv->tdastart;
- else
- tda.link = addr + sizeof(tda_t);
- tda.link |= 1;
- memcpy_toio(priv->base + addr, &tda, sizeof(tda_t));
- addr += sizeof(tda_t);
- baddr += PKTSIZE;
- }
-
- /* calculate how many receive buffers fit into remaining memory */
-
- priv->rxbufcnt = (dev->mem_end - dev->mem_start - baddr) / (sizeof(rra_t) + sizeof(rda_t) + PKTSIZE);
-
- /* calculate receive addresses */
-
- priv->rrastart = raddr = priv->txbufstart + (TXBUFCNT * PKTSIZE);
- priv->rdastart = addr = priv->rrastart + (priv->rxbufcnt * sizeof(rra_t));
- priv->rxbufstart = baddr = priv->rdastart + (priv->rxbufcnt * sizeof(rda_t));
-
- for (z = 0; z < priv->rxbufcnt; z++) {
- rra.startlo = baddr;
- rra.starthi = 0;
- rra.cntlo = PKTSIZE >> 1;
- rra.cnthi = 0;
- memcpy_toio(priv->base + raddr, &rra, sizeof(rra_t));
-
- rda.status = 0;
- rda.length = 0;
- rda.startlo = 0;
- rda.starthi = 0;
- rda.seqno = 0;
- if (z < priv->rxbufcnt - 1)
- rda.link = addr + sizeof(rda_t);
- else
- rda.link = 1;
- rda.inuse = 1;
- memcpy_toio(priv->base + addr, &rda, sizeof(rda_t));
-
- baddr += PKTSIZE;
- raddr += sizeof(rra_t);
- addr += sizeof(rda_t);
- }
-
- /* initialize current pointers */
-
- priv->nextrxdescr = 0;
- priv->lastrxdescr = priv->rxbufcnt - 1;
- priv->nexttxdescr = 0;
- priv->currtxdescr = 0;
- priv->txusedcnt = 0;
- memset(priv->txused, 0, sizeof(priv->txused));
-}
-
-/* set up Rx + Tx descriptors in SONIC */
-
-static int InitSONIC(struct net_device *dev)
-{
- ibmlana_priv *priv = netdev_priv(dev);
-
- /* set up start & end of resource area */
-
- outw(0, SONIC_URRA);
- outw(priv->rrastart, dev->base_addr + SONIC_RSA);
- outw(priv->rrastart + (priv->rxbufcnt * sizeof(rra_t)), dev->base_addr + SONIC_REA);
- outw(priv->rrastart, dev->base_addr + SONIC_RRP);
- outw(priv->rrastart, dev->base_addr + SONIC_RWP);
-
- /* set EOBC so that only one packet goes into one buffer */
-
- outw((PKTSIZE - 4) >> 1, dev->base_addr + SONIC_EOBC);
-
- /* let SONIC read the first RRA descriptor */
-
- outw(CMDREG_RRRA, dev->base_addr + SONIC_CMDREG);
- if (!wait_timeout(dev, SONIC_CMDREG, CMDREG_RRRA, 0, 2)) {
- printk(KERN_ERR "%s: SONIC did not respond on RRRA command - giving up.", dev->name);
- return 0;
- }
-
- /* point SONIC to the first RDA */
-
- outw(0, dev->base_addr + SONIC_URDA);
- outw(priv->rdastart, dev->base_addr + SONIC_CRDA);
-
- /* set upper half of TDA address */
-
- outw(0, dev->base_addr + SONIC_UTDA);
-
- return 1;
-}
-
-/* stop SONIC so we can reinitialize it */
-
-static void StopSONIC(struct net_device *dev)
-{
- /* disable interrupts */
-
- outb(inb(dev->base_addr + BCMREG) & (~BCMREG_IEN), dev->base_addr + BCMREG);
- outb(0, dev->base_addr + SONIC_IMREG);
-
- /* reset the SONIC */
-
- outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
- udelay(10);
- outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
-}
-
-/* initialize card and SONIC for proper operation */
-
-static void putcam(camentry_t * cams, int *camcnt, char *addr)
-{
- camentry_t *pcam = cams + (*camcnt);
- u8 *uaddr = (u8 *) addr;
-
- pcam->index = *camcnt;
- pcam->addr0 = (((u16) uaddr[1]) << 8) | uaddr[0];
- pcam->addr1 = (((u16) uaddr[3]) << 8) | uaddr[2];
- pcam->addr2 = (((u16) uaddr[5]) << 8) | uaddr[4];
- (*camcnt)++;
-}
-
-static void InitBoard(struct net_device *dev)
-{
- ibmlana_priv *priv = netdev_priv(dev);
- int camcnt;
- camentry_t cams[16];
- u32 cammask;
- struct netdev_hw_addr *ha;
- u16 rcrval;
-
- /* reset the SONIC */
-
- outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
- udelay(10);
-
- /* clear all spurious interrupts */
-
- outw(inw(dev->base_addr + SONIC_ISREG), dev->base_addr + SONIC_ISREG);
-
- /* set up the SONIC's bus interface - constant for this adapter -
- must be done while the SONIC is in reset */
-
- outw(DCREG_USR1 | DCREG_USR0 | DCREG_WC1 | DCREG_DW32, dev->base_addr + SONIC_DCREG);
- outw(0, dev->base_addr + SONIC_DCREG2);
-
- /* remove reset form the SONIC */
-
- outw(0, dev->base_addr + SONIC_CMDREG);
- udelay(10);
-
- /* data sheet requires URRA to be programmed before setting up the CAM contents */
-
- outw(0, dev->base_addr + SONIC_URRA);
-
- /* program the CAM entry 0 to the device address */
-
- camcnt = 0;
- putcam(cams, &camcnt, dev->dev_addr);
-
- /* start putting the multicast addresses into the CAM list. Stop if
- it is full. */
-
- netdev_for_each_mc_addr(ha, dev) {
- putcam(cams, &camcnt, ha->addr);
- if (camcnt == 16)
- break;
- }
-
- /* calculate CAM mask */
-
- cammask = (1 << camcnt) - 1;
-
- /* feed CDA into SONIC, initialize RCR value (always get broadcasts) */
-
- memcpy_toio(priv->base, cams, sizeof(camentry_t) * camcnt);
- memcpy_toio(priv->base + (sizeof(camentry_t) * camcnt), &cammask, sizeof(cammask));
-
-#ifdef DEBUG
- printk("CAM setup:\n");
- dumpmem(dev, 0, sizeof(camentry_t) * camcnt + sizeof(cammask));
-#endif
-
- outw(0, dev->base_addr + SONIC_CAMPTR);
- outw(camcnt, dev->base_addr + SONIC_CAMCNT);
- outw(CMDREG_LCAM, dev->base_addr + SONIC_CMDREG);
- if (!wait_timeout(dev, SONIC_CMDREG, CMDREG_LCAM, 0, 2)) {
- printk(KERN_ERR "%s:SONIC did not respond on LCAM command - giving up.", dev->name);
- return;
- } else {
- /* clear interrupt condition */
-
- outw(ISREG_LCD, dev->base_addr + SONIC_ISREG);
-
-#ifdef DEBUG
- printk("Loading CAM done, address pointers %04x:%04x\n",
- inw(dev->base_addr + SONIC_URRA),
- inw(dev->base_addr + SONIC_CAMPTR));
- {
- int z;
-
- printk("\n-->CAM: PTR %04x CNT %04x\n",
- inw(dev->base_addr + SONIC_CAMPTR),
- inw(dev->base_addr + SONIC_CAMCNT));
- outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
- for (z = 0; z < camcnt; z++) {
- outw(z, dev->base_addr + SONIC_CAMEPTR);
- printk("Entry %d: %04x %04x %04x\n", z,
- inw(dev->base_addr + SONIC_CAMADDR0),
- inw(dev->base_addr + SONIC_CAMADDR1),
- inw(dev->base_addr + SONIC_CAMADDR2));
- }
- outw(0, dev->base_addr + SONIC_CMDREG);
- }
-#endif
- }
-
- rcrval = RCREG_BRD | RCREG_LB_NONE;
-
- /* if still multicast addresses left or ALLMULTI is set, set the multicast
- enable bit */
-
- if ((dev->flags & IFF_ALLMULTI) || netdev_mc_count(dev) > camcnt)
- rcrval |= RCREG_AMC;
-
- /* promiscuous mode ? */
-
- if (dev->flags & IFF_PROMISC)
- rcrval |= RCREG_PRO;
-
- /* program receive mode */
-
- outw(rcrval, dev->base_addr + SONIC_RCREG);
-#ifdef DEBUG
- printk("\nRCRVAL: %04x\n", rcrval);
-#endif
-
- /* set up descriptors in shared memory + feed them into SONIC registers */
-
- InitDscrs(dev);
- if (!InitSONIC(dev))
- return;
-
- /* reset all pending interrupts */
-
- outw(0xffff, dev->base_addr + SONIC_ISREG);
-
- /* enable transmitter + receiver interrupts */
-
- outw(CMDREG_RXEN, dev->base_addr + SONIC_CMDREG);
- outw(IMREG_PRXEN | IMREG_RBEEN | IMREG_PTXEN | IMREG_TXEREN, dev->base_addr + SONIC_IMREG);
-
- /* turn on card interrupts */
-
- outb(inb(dev->base_addr + BCMREG) | BCMREG_IEN, dev->base_addr + BCMREG);
-
-#ifdef DEBUG
- printk("Register dump after initialization:\n");
- dumpregs(dev);
-#endif
-}
-
-/* start transmission of a descriptor */
-
-static void StartTx(struct net_device *dev, int descr)
-{
- ibmlana_priv *priv = netdev_priv(dev);
- int addr;
-
- addr = priv->tdastart + (descr * sizeof(tda_t));
-
- /* put descriptor address into SONIC */
-
- outw(addr, dev->base_addr + SONIC_CTDA);
-
- /* trigger transmitter */
-
- priv->currtxdescr = descr;
- outw(CMDREG_TXP, dev->base_addr + SONIC_CMDREG);
-}
-
-/* ------------------------------------------------------------------------
- * interrupt handler(s)
- * ------------------------------------------------------------------------ */
-
-/* receive buffer area exhausted */
-
-static void irqrbe_handler(struct net_device *dev)
-{
- ibmlana_priv *priv = netdev_priv(dev);
-
- /* point the SONIC back to the RRA start */
-
- outw(priv->rrastart, dev->base_addr + SONIC_RRP);
- outw(priv->rrastart, dev->base_addr + SONIC_RWP);
-}
-
-/* receive interrupt */
-
-static void irqrx_handler(struct net_device *dev)
-{
- ibmlana_priv *priv = netdev_priv(dev);
- rda_t rda;
- u32 rdaaddr, lrdaaddr;
-
- /* loop until ... */
-
- while (1) {
- /* read descriptor that was next to be filled by SONIC */
-
- rdaaddr = priv->rdastart + (priv->nextrxdescr * sizeof(rda_t));
- lrdaaddr = priv->rdastart + (priv->lastrxdescr * sizeof(rda_t));
- memcpy_fromio(&rda, priv->base + rdaaddr, sizeof(rda_t));
-
- /* iron out upper word halves of fields we use - SONIC will duplicate
- bits 0..15 to 16..31 */
-
- rda.status &= 0xffff;
- rda.length &= 0xffff;
- rda.startlo &= 0xffff;
-
- /* stop if the SONIC still owns it, i.e. there is no data for us */
-
- if (rda.inuse)
- break;
-
- /* good packet? */
-
- else if (rda.status & RCREG_PRX) {
- struct sk_buff *skb;
-
- /* fetch buffer */
-
- skb = dev_alloc_skb(rda.length + 2);
- if (skb == NULL)
- dev->stats.rx_dropped++;
- else {
- /* copy out data */
-
- memcpy_fromio(skb_put(skb, rda.length),
- priv->base +
- rda.startlo, rda.length);
-
- /* set up skb fields */
-
- skb->protocol = eth_type_trans(skb, dev);
- skb_checksum_none_assert(skb);
-
- /* bookkeeping */
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += rda.length;
-
- /* pass to the upper layers */
- netif_rx(skb);
- }
- }
-
- /* otherwise check error status bits and increase statistics */
-
- else {
- dev->stats.rx_errors++;
- if (rda.status & RCREG_FAER)
- dev->stats.rx_frame_errors++;
- if (rda.status & RCREG_CRCR)
- dev->stats.rx_crc_errors++;
- }
-
- /* descriptor processed, will become new last descriptor in queue */
-
- rda.link = 1;
- rda.inuse = 1;
- memcpy_toio(priv->base + rdaaddr, &rda,
- sizeof(rda_t));
-
- /* set up link and EOL = 0 in currently last descriptor. Only write
- the link field since the SONIC may currently already access the
- other fields. */
-
- memcpy_toio(priv->base + lrdaaddr + 20, &rdaaddr, 4);
-
- /* advance indices */
-
- priv->lastrxdescr = priv->nextrxdescr;
- if ((++priv->nextrxdescr) >= priv->rxbufcnt)
- priv->nextrxdescr = 0;
- }
-}
-
-/* transmit interrupt */
-
-static void irqtx_handler(struct net_device *dev)
-{
- ibmlana_priv *priv = netdev_priv(dev);
- tda_t tda;
-
- /* fetch descriptor (we forgot the size ;-) */
- memcpy_fromio(&tda, priv->base + priv->tdastart + (priv->currtxdescr * sizeof(tda_t)), sizeof(tda_t));
-
- /* update statistics */
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += tda.length;
-
- /* update our pointers */
- priv->txused[priv->currtxdescr] = 0;
- priv->txusedcnt--;
-
- /* if there are more descriptors present in RAM, start them */
- if (priv->txusedcnt > 0)
- StartTx(dev, (priv->currtxdescr + 1) % TXBUFCNT);
-
- /* tell the upper layer we can go on transmitting */
- netif_wake_queue(dev);
-}
-
-static void irqtxerr_handler(struct net_device *dev)
-{
- ibmlana_priv *priv = netdev_priv(dev);
- tda_t tda;
-
- /* fetch descriptor to check status */
- memcpy_fromio(&tda, priv->base + priv->tdastart + (priv->currtxdescr * sizeof(tda_t)), sizeof(tda_t));
-
- /* update statistics */
- dev->stats.tx_errors++;
- if (tda.status & (TCREG_NCRS | TCREG_CRSL))
- dev->stats.tx_carrier_errors++;
- if (tda.status & TCREG_EXC)
- dev->stats.tx_aborted_errors++;
- if (tda.status & TCREG_OWC)
- dev->stats.tx_window_errors++;
- if (tda.status & TCREG_FU)
- dev->stats.tx_fifo_errors++;
-
- /* update our pointers */
- priv->txused[priv->currtxdescr] = 0;
- priv->txusedcnt--;
-
- /* if there are more descriptors present in RAM, start them */
- if (priv->txusedcnt > 0)
- StartTx(dev, (priv->currtxdescr + 1) % TXBUFCNT);
-
- /* tell the upper layer we can go on transmitting */
- netif_wake_queue(dev);
-}
-
-/* general interrupt entry */
-
-static irqreturn_t irq_handler(int dummy, void *device)
-{
- struct net_device *dev = device;
- u16 ival;
-
- /* in case we're not meant... */
- if (!(inb(dev->base_addr + BCMREG) & BCMREG_IPEND))
- return IRQ_NONE;
-
- /* loop through the interrupt bits until everything is clear */
- while (1) {
- ival = inw(dev->base_addr + SONIC_ISREG);
-
- if (ival & ISREG_RBE) {
- irqrbe_handler(dev);
- outw(ISREG_RBE, dev->base_addr + SONIC_ISREG);
- }
- if (ival & ISREG_PKTRX) {
- irqrx_handler(dev);
- outw(ISREG_PKTRX, dev->base_addr + SONIC_ISREG);
- }
- if (ival & ISREG_TXDN) {
- irqtx_handler(dev);
- outw(ISREG_TXDN, dev->base_addr + SONIC_ISREG);
- }
- if (ival & ISREG_TXER) {
- irqtxerr_handler(dev);
- outw(ISREG_TXER, dev->base_addr + SONIC_ISREG);
- }
- break;
- }
- return IRQ_HANDLED;
-}
-
-/* ------------------------------------------------------------------------
- * driver methods
- * ------------------------------------------------------------------------ */
-
-/* MCA info */
-
-#if 0 /* info available elsewhere, but this is kept for reference */
-static int ibmlana_getinfo(char *buf, int slot, void *d)
-{
- int len = 0, i;
- struct net_device *dev = (struct net_device *) d;
- ibmlana_priv *priv;
-
- /* can't say anything about an uninitialized device... */
-
- if (dev == NULL)
- return len;
- priv = netdev_priv(dev);
-
- /* print info */
-
- len += sprintf(buf + len, "IRQ: %d\n", priv->realirq);
- len += sprintf(buf + len, "I/O: %#lx\n", dev->base_addr);
- len += sprintf(buf + len, "Memory: %#lx-%#lx\n", dev->mem_start, dev->mem_end - 1);
- len += sprintf(buf + len, "Transceiver: %s\n", MediaNames[priv->medium]);
- len += sprintf(buf + len, "Device: %s\n", dev->name);
- len += sprintf(buf + len, "MAC address:");
- for (i = 0; i < 6; i++)
- len += sprintf(buf + len, " %02x", dev->dev_addr[i]);
- buf[len++] = '\n';
- buf[len] = 0;
-
- return len;
-}
-#endif
-
-/* open driver. Means also initialization and start of LANCE */
-
-static int ibmlana_open(struct net_device *dev)
-{
- int result;
- ibmlana_priv *priv = netdev_priv(dev);
-
- /* register resources - only necessary for IRQ */
-
- result = request_irq(priv->realirq, irq_handler, IRQF_SHARED,
- dev->name, dev);
- if (result != 0) {
- printk(KERN_ERR "%s: failed to register irq %d\n", dev->name, dev->irq);
- return result;
- }
- dev->irq = priv->realirq;
-
- /* set up the card and SONIC */
- InitBoard(dev);
-
- /* initialize operational flags */
- netif_start_queue(dev);
- return 0;
-}
-
-/* close driver. Shut down board and free allocated resources */
-
-static int ibmlana_close(struct net_device *dev)
-{
- /* turn off board */
-
- /* release resources */
- if (dev->irq != 0)
- free_irq(dev->irq, dev);
- dev->irq = 0;
- return 0;
-}
-
-/* transmit a block. */
-
-static netdev_tx_t ibmlana_tx(struct sk_buff *skb, struct net_device *dev)
-{
- ibmlana_priv *priv = netdev_priv(dev);
- int tmplen, addr;
- unsigned long flags;
- tda_t tda;
- int baddr;
-
- /* find out if there are free slots for a frame to transmit. If not,
- the upper layer is in deep desperation and we simply ignore the frame. */
-
- if (priv->txusedcnt >= TXBUFCNT) {
- dev->stats.tx_dropped++;
- goto tx_done;
- }
-
- /* copy the frame data into the next free transmit buffer - fillup missing */
- tmplen = skb->len;
- if (tmplen < 60)
- tmplen = 60;
- baddr = priv->txbufstart + (priv->nexttxdescr * PKTSIZE);
- memcpy_toio(priv->base + baddr, skb->data, skb->len);
-
- /* copy filler into RAM - in case we're filling up...
- we're filling a bit more than necessary, but that doesn't harm
- since the buffer is far larger...
- Sorry Linus for the filler string but I couldn't resist ;-) */
-
- if (tmplen > skb->len) {
- char *fill = "NetBSD is a nice OS too! ";
- unsigned int destoffs = skb->len, l = strlen(fill);
-
- while (destoffs < tmplen) {
- memcpy_toio(priv->base + baddr + destoffs, fill, l);
- destoffs += l;
- }
- }
-
- /* set up the new frame descriptor */
- addr = priv->tdastart + (priv->nexttxdescr * sizeof(tda_t));
- memcpy_fromio(&tda, priv->base + addr, sizeof(tda_t));
- tda.length = tda.fraglength = tmplen;
- memcpy_toio(priv->base + addr, &tda, sizeof(tda_t));
-
- /* if there were no active descriptors, trigger the SONIC */
- spin_lock_irqsave(&priv->lock, flags);
-
- priv->txusedcnt++;
- priv->txused[priv->nexttxdescr] = 1;
-
- /* are all transmission slots used up ? */
- if (priv->txusedcnt >= TXBUFCNT)
- netif_stop_queue(dev);
-
- if (priv->txusedcnt == 1)
- StartTx(dev, priv->nexttxdescr);
- priv->nexttxdescr = (priv->nexttxdescr + 1) % TXBUFCNT;
-
- spin_unlock_irqrestore(&priv->lock, flags);
-tx_done:
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
-}
-
-/* switch receiver mode. */
-
-static void ibmlana_set_multicast_list(struct net_device *dev)
-{
- /* first stop the SONIC... */
- StopSONIC(dev);
- /* ...then reinit it with the new flags */
- InitBoard(dev);
-}
-
-/* ------------------------------------------------------------------------
- * hardware check
- * ------------------------------------------------------------------------ */
-
-static int ibmlana_irq;
-static int ibmlana_io;
-static int startslot; /* counts through slots when probing multiple devices */
-
-static short ibmlana_adapter_ids[] __initdata = {
- IBM_LANA_ID,
- 0x0000
-};
-
-static char *ibmlana_adapter_names[] __devinitdata = {
- "IBM LAN Adapter/A",
- NULL
-};
-
-
-static const struct net_device_ops ibmlana_netdev_ops = {
- .ndo_open = ibmlana_open,
- .ndo_stop = ibmlana_close,
- .ndo_start_xmit = ibmlana_tx,
- .ndo_set_multicast_list = ibmlana_set_multicast_list,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static int __devinit ibmlana_init_one(struct device *kdev)
-{
- struct mca_device *mdev = to_mca_device(kdev);
- struct net_device *dev;
- int slot = mdev->slot, z, rc;
- int base = 0, irq = 0, iobase = 0, memlen = 0;
- ibmlana_priv *priv;
- ibmlana_medium medium;
-
- dev = alloc_etherdev(sizeof(ibmlana_priv));
- if (!dev)
- return -ENOMEM;
-
- dev->irq = ibmlana_irq;
- dev->base_addr = ibmlana_io;
-
- base = dev->mem_start;
- irq = dev->irq;
-
- /* deduce card addresses */
- getaddrs(mdev, &base, &memlen, &iobase, &irq, &medium);
-
- /* were we looking for something different ? */
- if (dev->irq && dev->irq != irq) {
- rc = -ENODEV;
- goto err_out;
- }
- if (dev->mem_start && dev->mem_start != base) {
- rc = -ENODEV;
- goto err_out;
- }
-
- /* announce success */
- printk(KERN_INFO "%s: IBM LAN Adapter/A found in slot %d\n", dev->name, slot + 1);
-
- /* try to obtain I/O range */
- if (!request_region(iobase, IBM_LANA_IORANGE, DRV_NAME)) {
- printk(KERN_ERR "%s: cannot allocate I/O range at %#x!\n", DRV_NAME, iobase);
- startslot = slot + 1;
- rc = -EBUSY;
- goto err_out;
- }
-
- priv = netdev_priv(dev);
- priv->slot = slot;
- priv->realirq = mca_device_transform_irq(mdev, irq);
- priv->medium = medium;
- spin_lock_init(&priv->lock);
-
- /* set base + irq for this device (irq not allocated so far) */
-
- dev->irq = 0;
- dev->mem_start = base;
- dev->mem_end = base + memlen;
- dev->base_addr = iobase;
-
- priv->base = ioremap(base, memlen);
- if (!priv->base) {
- printk(KERN_ERR "%s: cannot remap memory!\n", DRV_NAME);
- startslot = slot + 1;
- rc = -EBUSY;
- goto err_out_reg;
- }
-
- mca_device_set_name(mdev, ibmlana_adapter_names[mdev->index]);
- mca_device_set_claim(mdev, 1);
-
- /* set methods */
- dev->netdev_ops = &ibmlana_netdev_ops;
- dev->flags |= IFF_MULTICAST;
-
- /* copy out MAC address */
-
- for (z = 0; z < ETH_ALEN; z++)
- dev->dev_addr[z] = inb(dev->base_addr + MACADDRPROM + z);
-
- /* print config */
-
- printk(KERN_INFO "%s: IRQ %d, I/O %#lx, memory %#lx-%#lx, "
- "MAC address %pM.\n",
- dev->name, priv->realirq, dev->base_addr,
- dev->mem_start, dev->mem_end - 1,
- dev->dev_addr);
- printk(KERN_INFO "%s: %s medium\n", dev->name, MediaNames[priv->medium]);
-
- /* reset board */
-
- ResetBoard(dev);
-
- /* next probe will start at next slot */
-
- startslot = slot + 1;
-
- rc = register_netdev(dev);
- if (rc)
- goto err_out_claimed;
-
- dev_set_drvdata(kdev, dev);
- return 0;
-
-err_out_claimed:
- mca_device_set_claim(mdev, 0);
- iounmap(priv->base);
-err_out_reg:
- release_region(iobase, IBM_LANA_IORANGE);
-err_out:
- free_netdev(dev);
- return rc;
-}
-
-static int ibmlana_remove_one(struct device *kdev)
-{
- struct mca_device *mdev = to_mca_device(kdev);
- struct net_device *dev = dev_get_drvdata(kdev);
- ibmlana_priv *priv = netdev_priv(dev);
-
- unregister_netdev(dev);
- /*DeinitBoard(dev); */
- release_region(dev->base_addr, IBM_LANA_IORANGE);
- mca_device_set_claim(mdev, 0);
- iounmap(priv->base);
- free_netdev(dev);
- return 0;
-}
-
-/* ------------------------------------------------------------------------
- * modularization support
- * ------------------------------------------------------------------------ */
-
-module_param_named(irq, ibmlana_irq, int, 0);
-module_param_named(io, ibmlana_io, int, 0);
-MODULE_PARM_DESC(irq, "IBM LAN/A IRQ number");
-MODULE_PARM_DESC(io, "IBM LAN/A I/O base address");
-MODULE_LICENSE("GPL");
-
-static struct mca_driver ibmlana_driver = {
- .id_table = ibmlana_adapter_ids,
- .driver = {
- .name = "ibmlana",
- .bus = &mca_bus_type,
- .probe = ibmlana_init_one,
- .remove = ibmlana_remove_one,
- },
-};
-
-static int __init ibmlana_init_module(void)
-{
- return mca_register_driver(&ibmlana_driver);
-}
-
-static void __exit ibmlana_cleanup_module(void)
-{
- mca_unregister_driver(&ibmlana_driver);
-}
-
-module_init(ibmlana_init_module);
-module_exit(ibmlana_cleanup_module);
+++ /dev/null
-#ifndef _IBM_LANA_INCLUDE_
-#define _IBM_LANA_INCLUDE_
-
-#ifdef _IBM_LANA_DRIVER_
-
-/* maximum packet size */
-
-#define PKTSIZE 1524
-
-/* number of transmit buffers */
-
-#define TXBUFCNT 4
-
-/* Adapter ID's */
-#define IBM_LANA_ID 0xffe0
-
-/* media enumeration - defined in a way that it fits onto the LAN/A's
- POS registers... */
-
-typedef enum {
- Media_10BaseT, Media_10Base5,
- Media_Unknown, Media_10Base2, Media_Count
-} ibmlana_medium;
-
-/* private structure */
-
-typedef struct {
- unsigned int slot; /* MCA-Slot-# */
- int realirq; /* memorizes actual IRQ, even when
- currently not allocated */
- ibmlana_medium medium; /* physical cannector */
- u32 tdastart, txbufstart, /* addresses */
- rrastart, rxbufstart, rdastart, rxbufcnt, txusedcnt;
- int nextrxdescr, /* next rx descriptor to be used */
- lastrxdescr, /* last free rx descriptor */
- nexttxdescr, /* last tx descriptor to be used */
- currtxdescr, /* tx descriptor currently tx'ed */
- txused[TXBUFCNT]; /* busy flags */
- void __iomem *base;
- spinlock_t lock;
-} ibmlana_priv;
-
-/* this card uses quite a lot of I/O ports...luckily the MCA bus decodes
- a full 64K I/O range... */
-
-#define IBM_LANA_IORANGE 0xa0
-
-/* Command Register: */
-
-#define SONIC_CMDREG 0x00
-#define CMDREG_HTX 0x0001 /* halt transmission */
-#define CMDREG_TXP 0x0002 /* start transmission */
-#define CMDREG_RXDIS 0x0004 /* disable receiver */
-#define CMDREG_RXEN 0x0008 /* enable receiver */
-#define CMDREG_STP 0x0010 /* stop timer */
-#define CMDREG_ST 0x0020 /* start timer */
-#define CMDREG_RST 0x0080 /* software reset */
-#define CMDREG_RRRA 0x0100 /* force SONIC to read first RRA */
-#define CMDREG_LCAM 0x0200 /* force SONIC to read CAM descrs */
-
-/* Data Configuration Register */
-
-#define SONIC_DCREG 0x02
-#define DCREG_EXBUS 0x8000 /* Extended Bus Mode */
-#define DCREG_LBR 0x2000 /* Latched Bus Retry */
-#define DCREG_PO1 0x1000 /* Programmable Outputs */
-#define DCREG_PO0 0x0800
-#define DCREG_SBUS 0x0400 /* Synchronous Bus Mode */
-#define DCREG_USR1 0x0200 /* User Definable Pins */
-#define DCREG_USR0 0x0100
-#define DCREG_WC0 0x0000 /* 0..3 Wait States */
-#define DCREG_WC1 0x0040
-#define DCREG_WC2 0x0080
-#define DCREG_WC3 0x00c0
-#define DCREG_DW16 0x0000 /* 16 bit Bus Mode */
-#define DCREG_DW32 0x0020 /* 32 bit Bus Mode */
-#define DCREG_BMS 0x0010 /* Block Mode Select */
-#define DCREG_RFT4 0x0000 /* 4/8/16/24 bytes RX Threshold */
-#define DCREG_RFT8 0x0004
-#define DCREG_RFT16 0x0008
-#define DCREG_RFT24 0x000c
-#define DCREG_TFT8 0x0000 /* 8/16/24/28 bytes TX Threshold */
-#define DCREG_TFT16 0x0001
-#define DCREG_TFT24 0x0002
-#define DCREG_TFT28 0x0003
-
-/* Receive Control Register */
-
-#define SONIC_RCREG 0x04
-#define RCREG_ERR 0x8000 /* accept damaged and collided pkts */
-#define RCREG_RNT 0x4000 /* accept packets that are < 64 */
-#define RCREG_BRD 0x2000 /* accept broadcasts */
-#define RCREG_PRO 0x1000 /* promiscuous mode */
-#define RCREG_AMC 0x0800 /* accept all multicasts */
-#define RCREG_LB_NONE 0x0000 /* no loopback */
-#define RCREG_LB_MAC 0x0200 /* MAC loopback */
-#define RCREG_LB_ENDEC 0x0400 /* ENDEC loopback */
-#define RCREG_LB_XVR 0x0600 /* Transceiver loopback */
-#define RCREG_MC 0x0100 /* Multicast received */
-#define RCREG_BC 0x0080 /* Broadcast received */
-#define RCREG_LPKT 0x0040 /* last packet in RBA */
-#define RCREG_CRS 0x0020 /* carrier sense present */
-#define RCREG_COL 0x0010 /* recv'd packet with collision */
-#define RCREG_CRCR 0x0008 /* recv'd packet with CRC error */
-#define RCREG_FAER 0x0004 /* recv'd packet with inv. framing */
-#define RCREG_LBK 0x0002 /* recv'd loopback packet */
-#define RCREG_PRX 0x0001 /* recv'd packet is OK */
-
-/* Transmit Control Register */
-
-#define SONIC_TCREG 0x06
-#define TCREG_PINT 0x8000 /* generate interrupt after TDA read */
-#define TCREG_POWC 0x4000 /* timer start out of window detect */
-#define TCREG_CRCI 0x2000 /* inhibit CRC generation */
-#define TCREG_EXDIS 0x1000 /* disable excessive deferral timer */
-#define TCREG_EXD 0x0400 /* excessive deferral occurred */
-#define TCREG_DEF 0x0200 /* single deferral occurred */
-#define TCREG_NCRS 0x0100 /* no carrier detected */
-#define TCREG_CRSL 0x0080 /* carrier lost */
-#define TCREG_EXC 0x0040 /* excessive collisions occurred */
-#define TCREG_OWC 0x0020 /* out of window collision occurred */
-#define TCREG_PMB 0x0008 /* packet monitored bad */
-#define TCREG_FU 0x0004 /* FIFO underrun */
-#define TCREG_BCM 0x0002 /* byte count mismatch of fragments */
-#define TCREG_PTX 0x0001 /* packet transmitted OK */
-
-/* Interrupt Mask Register */
-
-#define SONIC_IMREG 0x08
-#define IMREG_BREN 0x4000 /* interrupt when bus retry occurred */
-#define IMREG_HBLEN 0x2000 /* interrupt when heartbeat lost */
-#define IMREG_LCDEN 0x1000 /* interrupt when CAM loaded */
-#define IMREG_PINTEN 0x0800 /* interrupt when PINT in TDA set */
-#define IMREG_PRXEN 0x0400 /* interrupt when packet received */
-#define IMREG_PTXEN 0x0200 /* interrupt when packet was sent */
-#define IMREG_TXEREN 0x0100 /* interrupt when send failed */
-#define IMREG_TCEN 0x0080 /* interrupt when timer completed */
-#define IMREG_RDEEN 0x0040 /* interrupt when RDA exhausted */
-#define IMREG_RBEEN 0x0020 /* interrupt when RBA exhausted */
-#define IMREG_RBAEEN 0x0010 /* interrupt when RBA too short */
-#define IMREG_CRCEN 0x0008 /* interrupt when CRC counter rolls */
-#define IMREG_FAEEN 0x0004 /* interrupt when FAE counter rolls */
-#define IMREG_MPEN 0x0002 /* interrupt when MP counter rolls */
-#define IMREG_RFOEN 0x0001 /* interrupt when Rx FIFO overflows */
-
-/* Interrupt Status Register */
-
-#define SONIC_ISREG 0x0a
-#define ISREG_BR 0x4000 /* bus retry occurred */
-#define ISREG_HBL 0x2000 /* heartbeat lost */
-#define ISREG_LCD 0x1000 /* CAM loaded */
-#define ISREG_PINT 0x0800 /* PINT in TDA set */
-#define ISREG_PKTRX 0x0400 /* packet received */
-#define ISREG_TXDN 0x0200 /* packet was sent */
-#define ISREG_TXER 0x0100 /* send failed */
-#define ISREG_TC 0x0080 /* timer completed */
-#define ISREG_RDE 0x0040 /* RDA exhausted */
-#define ISREG_RBE 0x0020 /* RBA exhausted */
-#define ISREG_RBAE 0x0010 /* RBA too short for received frame */
-#define ISREG_CRC 0x0008 /* CRC counter rolls over */
-#define ISREG_FAE 0x0004 /* FAE counter rolls over */
-#define ISREG_MP 0x0002 /* MP counter rolls over */
-#define ISREG_RFO 0x0001 /* Rx FIFO overflows */
-
-#define SONIC_UTDA 0x0c /* current transmit descr address */
-#define SONIC_CTDA 0x0e
-
-#define SONIC_URDA 0x1a /* current receive descr address */
-#define SONIC_CRDA 0x1c
-
-#define SONIC_CRBA0 0x1e /* current receive buffer address */
-#define SONIC_CRBA1 0x20
-
-#define SONIC_RBWC0 0x22 /* word count in receive buffer */
-#define SONIC_RBWC1 0x24
-
-#define SONIC_EOBC 0x26 /* minimum space to be free in RBA */
-
-#define SONIC_URRA 0x28 /* upper address of CDA & Recv Area */
-
-#define SONIC_RSA 0x2a /* start of receive resource area */
-
-#define SONIC_REA 0x2c /* end of receive resource area */
-
-#define SONIC_RRP 0x2e /* resource read pointer */
-
-#define SONIC_RWP 0x30 /* resource write pointer */
-
-#define SONIC_CAMEPTR 0x42 /* CAM entry pointer */
-
-#define SONIC_CAMADDR2 0x44 /* CAM address ports */
-#define SONIC_CAMADDR1 0x46
-#define SONIC_CAMADDR0 0x48
-
-#define SONIC_CAMPTR 0x4c /* lower address of CDA */
-
-#define SONIC_CAMCNT 0x4e /* # of CAM descriptors to load */
-
-/* Data Configuration Register 2 */
-
-#define SONIC_DCREG2 0x7e
-#define DCREG2_EXPO3 0x8000 /* extended programmable outputs */
-#define DCREG2_EXPO2 0x4000
-#define DCREG2_EXPO1 0x2000
-#define DCREG2_EXPO0 0x1000
-#define DCREG2_HD 0x0800 /* heartbeat disable */
-#define DCREG2_JD 0x0200 /* jabber timer disable */
-#define DCREG2_AUTO 0x0100 /* enable AUI/TP auto selection */
-#define DCREG2_XWRAP 0x0040 /* TP transceiver loopback */
-#define DCREG2_PH 0x0010 /* HOLD request timing */
-#define DCREG2_PCM 0x0004 /* packet compress when matched */
-#define DCREG2_PCNM 0x0002 /* packet compress when not matched */
-#define DCREG2_RJCM 0x0001 /* inverse packet match via CAM */
-
-/* Board Control Register: Enable RAM, Interrupts... */
-
-#define BCMREG 0x80
-#define BCMREG_RAMEN 0x80 /* switch over to RAM */
-#define BCMREG_IPEND 0x40 /* interrupt pending ? */
-#define BCMREG_RESET 0x08 /* reset board */
-#define BCMREG_16BIT 0x04 /* adapter in 16-bit slot */
-#define BCMREG_RAMWIN 0x02 /* enable RAM window */
-#define BCMREG_IEN 0x01 /* interrupt enable */
-
-/* MAC Address PROM */
-
-#define MACADDRPROM 0x92
-
-/* structure of a CAM entry */
-
-typedef struct {
- u32 index; /* pointer into CAM area */
- u32 addr0; /* address part (bits 0..15 used) */
- u32 addr1;
- u32 addr2;
-} camentry_t;
-
-/* structure of a receive resource */
-
-typedef struct {
- u32 startlo; /* start address (bits 0..15 used) */
- u32 starthi;
- u32 cntlo; /* size in 16-bit quantities */
- u32 cnthi;
-} rra_t;
-
-/* structure of a receive descriptor */
-
-typedef struct {
- u32 status; /* packet status */
- u32 length; /* length in bytes */
- u32 startlo; /* start address */
- u32 starthi;
- u32 seqno; /* frame sequence */
- u32 link; /* pointer to next descriptor */
- /* bit 0 = EOL */
- u32 inuse; /* !=0 --> free for SONIC to write */
-} rda_t;
-
-/* structure of a transmit descriptor */
-
-typedef struct {
- u32 status; /* transmit status */
- u32 config; /* value for TCR */
- u32 length; /* total length */
- u32 fragcount; /* number of fragments */
- u32 startlo; /* start address of fragment */
- u32 starthi;
- u32 fraglength; /* length of this fragment */
- /* more address/length triplets may */
- /* follow here */
- u32 link; /* pointer to next descriptor */
- /* bit 0 = EOL */
-} tda_t;
-
-#endif /* _IBM_LANA_DRIVER_ */
-
-#endif /* _IBM_LANA_INCLUDE_ */
+++ /dev/null
-/*
- * jazzsonic.c
- *
- * (C) 2005 Finn Thain
- *
- * Converted to DMA API, and (from the mac68k project) introduced
- * dhd's support for 16-bit cards.
- *
- * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
- *
- * This driver is based on work from Andreas Busse, but most of
- * the code is rewritten.
- *
- * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
- *
- * A driver for the onboard Sonic ethernet controller on Mips Jazz
- * systems (Acer Pica-61, Mips Magnum 4000, Olivetti M700 and
- * perhaps others, too)
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/gfp.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/slab.h>
-
-#include <asm/bootinfo.h>
-#include <asm/system.h>
-#include <asm/pgtable.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/jazz.h>
-#include <asm/jazzdma.h>
-
-static char jazz_sonic_string[] = "jazzsonic";
-
-#define SONIC_MEM_SIZE 0x100
-
-#include "sonic.h"
-
-/*
- * Macros to access SONIC registers
- */
-#define SONIC_READ(reg) (*((volatile unsigned int *)dev->base_addr+reg))
-
-#define SONIC_WRITE(reg,val) \
-do { \
- *((volatile unsigned int *)dev->base_addr+(reg)) = (val); \
-} while (0)
-
-
-/* use 0 for production, 1 for verification, >1 for debug */
-#ifdef SONIC_DEBUG
-static unsigned int sonic_debug = SONIC_DEBUG;
-#else
-static unsigned int sonic_debug = 1;
-#endif
-
-/*
- * We cannot use station (ethernet) address prefixes to detect the
- * sonic controller since these are board manufacturer depended.
- * So we check for known Silicon Revision IDs instead.
- */
-static unsigned short known_revisions[] =
-{
- 0x04, /* Mips Magnum 4000 */
- 0xffff /* end of list */
-};
-
-static int jazzsonic_open(struct net_device* dev)
-{
- int retval;
-
- retval = request_irq(dev->irq, sonic_interrupt, IRQF_DISABLED,
- "sonic", dev);
- if (retval) {
- printk(KERN_ERR "%s: unable to get IRQ %d.\n",
- dev->name, dev->irq);
- return retval;
- }
-
- retval = sonic_open(dev);
- if (retval)
- free_irq(dev->irq, dev);
- return retval;
-}
-
-static int jazzsonic_close(struct net_device* dev)
-{
- int err;
- err = sonic_close(dev);
- free_irq(dev->irq, dev);
- return err;
-}
-
-static const struct net_device_ops sonic_netdev_ops = {
- .ndo_open = jazzsonic_open,
- .ndo_stop = jazzsonic_close,
- .ndo_start_xmit = sonic_send_packet,
- .ndo_get_stats = sonic_get_stats,
- .ndo_set_multicast_list = sonic_multicast_list,
- .ndo_tx_timeout = sonic_tx_timeout,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
-};
-
-static int __devinit sonic_probe1(struct net_device *dev)
-{
- static unsigned version_printed;
- unsigned int silicon_revision;
- unsigned int val;
- struct sonic_local *lp = netdev_priv(dev);
- int err = -ENODEV;
- int i;
-
- if (!request_mem_region(dev->base_addr, SONIC_MEM_SIZE, jazz_sonic_string))
- return -EBUSY;
-
- /*
- * get the Silicon Revision ID. If this is one of the known
- * one assume that we found a SONIC ethernet controller at
- * the expected location.
- */
- silicon_revision = SONIC_READ(SONIC_SR);
- if (sonic_debug > 1)
- printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);
-
- i = 0;
- while (known_revisions[i] != 0xffff &&
- known_revisions[i] != silicon_revision)
- i++;
-
- if (known_revisions[i] == 0xffff) {
- printk("SONIC ethernet controller not found (0x%4x)\n",
- silicon_revision);
- goto out;
- }
-
- if (sonic_debug && version_printed++ == 0)
- printk(version);
-
- printk(KERN_INFO "%s: Sonic ethernet found at 0x%08lx, ",
- dev_name(lp->device), dev->base_addr);
-
- /*
- * Put the sonic into software reset, then
- * retrieve and print the ethernet address.
- */
- SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
- SONIC_WRITE(SONIC_CEP,0);
- for (i=0; i<3; i++) {
- val = SONIC_READ(SONIC_CAP0-i);
- dev->dev_addr[i*2] = val;
- dev->dev_addr[i*2+1] = val >> 8;
- }
-
- err = -ENOMEM;
-
- /* Initialize the device structure. */
-
- lp->dma_bitmode = SONIC_BITMODE32;
-
- /* Allocate the entire chunk of memory for the descriptors.
- Note that this cannot cross a 64K boundary. */
- if ((lp->descriptors = dma_alloc_coherent(lp->device,
- SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
- &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
- printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n",
- dev_name(lp->device));
- goto out;
- }
-
- /* Now set up the pointers to point to the appropriate places */
- lp->cda = lp->descriptors;
- lp->tda = lp->cda + (SIZEOF_SONIC_CDA
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
-
- lp->cda_laddr = lp->descriptors_laddr;
- lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
-
- dev->netdev_ops = &sonic_netdev_ops;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- /*
- * clear tally counter
- */
- SONIC_WRITE(SONIC_CRCT,0xffff);
- SONIC_WRITE(SONIC_FAET,0xffff);
- SONIC_WRITE(SONIC_MPT,0xffff);
-
- return 0;
-out:
- release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
- return err;
-}
-
-/*
- * Probe for a SONIC ethernet controller on a Mips Jazz board.
- * Actually probing is superfluous but we're paranoid.
- */
-static int __devinit jazz_sonic_probe(struct platform_device *pdev)
-{
- struct net_device *dev;
- struct sonic_local *lp;
- struct resource *res;
- int err = 0;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
-
- dev = alloc_etherdev(sizeof(struct sonic_local));
- if (!dev)
- return -ENOMEM;
-
- lp = netdev_priv(dev);
- lp->device = &pdev->dev;
- SET_NETDEV_DEV(dev, &pdev->dev);
- platform_set_drvdata(pdev, dev);
-
- netdev_boot_setup_check(dev);
-
- dev->base_addr = res->start;
- dev->irq = platform_get_irq(pdev, 0);
- err = sonic_probe1(dev);
- if (err)
- goto out;
- err = register_netdev(dev);
- if (err)
- goto out1;
-
- printk("%s: MAC %pM IRQ %d\n", dev->name, dev->dev_addr, dev->irq);
-
- return 0;
-
-out1:
- release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
-out:
- free_netdev(dev);
-
- return err;
-}
-
-MODULE_DESCRIPTION("Jazz SONIC ethernet driver");
-module_param(sonic_debug, int, 0);
-MODULE_PARM_DESC(sonic_debug, "jazzsonic debug level (1-4)");
-MODULE_ALIAS("platform:jazzsonic");
-
-#include "sonic.c"
-
-static int __devexit jazz_sonic_device_remove (struct platform_device *pdev)
-{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct sonic_local* lp = netdev_priv(dev);
-
- unregister_netdev(dev);
- dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
- lp->descriptors, lp->descriptors_laddr);
- release_mem_region(dev->base_addr, SONIC_MEM_SIZE);
- free_netdev(dev);
-
- return 0;
-}
-
-static struct platform_driver jazz_sonic_driver = {
- .probe = jazz_sonic_probe,
- .remove = __devexit_p(jazz_sonic_device_remove),
- .driver = {
- .name = jazz_sonic_string,
- .owner = THIS_MODULE,
- },
-};
-
-static int __init jazz_sonic_init_module(void)
-{
- return platform_driver_register(&jazz_sonic_driver);
-}
-
-static void __exit jazz_sonic_cleanup_module(void)
-{
- platform_driver_unregister(&jazz_sonic_driver);
-}
-
-module_init(jazz_sonic_init_module);
-module_exit(jazz_sonic_cleanup_module);
+++ /dev/null
-/*
- * macsonic.c
- *
- * (C) 2005 Finn Thain
- *
- * Converted to DMA API, converted to unified driver model, made it work as
- * a module again, and from the mac68k project, introduced more 32-bit cards
- * and dhd's support for 16-bit cards.
- *
- * (C) 1998 Alan Cox
- *
- * Debugging Andreas Ehliar, Michael Schmitz
- *
- * Based on code
- * (C) 1996 by Thomas Bogendoerfer (tsbogend@bigbug.franken.de)
- *
- * This driver is based on work from Andreas Busse, but most of
- * the code is rewritten.
- *
- * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
- *
- * A driver for the Mac onboard Sonic ethernet chip.
- *
- * 98/12/21 MSch: judged from tests on Q800, it's basically working,
- * but eating up both receive and transmit resources
- * and duplicating packets. Needs more testing.
- *
- * 99/01/03 MSch: upgraded to version 0.92 of the core driver, fixed.
- *
- * 00/10/31 sammy@oh.verio.com: Updated driver for 2.4 kernels, fixed problems
- * on centris.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/gfp.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/nubus.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/bitrev.h>
-#include <linux/slab.h>
-
-#include <asm/bootinfo.h>
-#include <asm/system.h>
-#include <asm/pgtable.h>
-#include <asm/io.h>
-#include <asm/hwtest.h>
-#include <asm/dma.h>
-#include <asm/macintosh.h>
-#include <asm/macints.h>
-#include <asm/mac_via.h>
-
-static char mac_sonic_string[] = "macsonic";
-
-#include "sonic.h"
-
-/* These should basically be bus-size and endian independent (since
- the SONIC is at least smart enough that it uses the same endianness
- as the host, unlike certain less enlightened Macintosh NICs) */
-#define SONIC_READ(reg) (nubus_readw(dev->base_addr + (reg * 4) \
- + lp->reg_offset))
-#define SONIC_WRITE(reg,val) (nubus_writew(val, dev->base_addr + (reg * 4) \
- + lp->reg_offset))
-
-/* use 0 for production, 1 for verification, >1 for debug */
-#ifdef SONIC_DEBUG
-static unsigned int sonic_debug = SONIC_DEBUG;
-#else
-static unsigned int sonic_debug = 1;
-#endif
-
-static int sonic_version_printed;
-
-/* For onboard SONIC */
-#define ONBOARD_SONIC_REGISTERS 0x50F0A000
-#define ONBOARD_SONIC_PROM_BASE 0x50f08000
-
-enum macsonic_type {
- MACSONIC_DUODOCK,
- MACSONIC_APPLE,
- MACSONIC_APPLE16,
- MACSONIC_DAYNA,
- MACSONIC_DAYNALINK
-};
-
-/* For the built-in SONIC in the Duo Dock */
-#define DUODOCK_SONIC_REGISTERS 0xe10000
-#define DUODOCK_SONIC_PROM_BASE 0xe12000
-
-/* For Apple-style NuBus SONIC */
-#define APPLE_SONIC_REGISTERS 0
-#define APPLE_SONIC_PROM_BASE 0x40000
-
-/* Daynalink LC SONIC */
-#define DAYNALINK_PROM_BASE 0x400000
-
-/* For Dayna-style NuBus SONIC (haven't seen one yet) */
-#define DAYNA_SONIC_REGISTERS 0x180000
-/* This is what OpenBSD says. However, this is definitely in NuBus
- ROM space so we should be able to get it by walking the NuBus
- resource directories */
-#define DAYNA_SONIC_MAC_ADDR 0xffe004
-
-#define SONIC_READ_PROM(addr) nubus_readb(prom_addr+addr)
-
-/*
- * For reversing the PROM address
- */
-
-static inline void bit_reverse_addr(unsigned char addr[6])
-{
- int i;
-
- for(i = 0; i < 6; i++)
- addr[i] = bitrev8(addr[i]);
-}
-
-static irqreturn_t macsonic_interrupt(int irq, void *dev_id)
-{
- irqreturn_t result;
- unsigned long flags;
-
- local_irq_save(flags);
- result = sonic_interrupt(irq, dev_id);
- local_irq_restore(flags);
- return result;
-}
-
-static int macsonic_open(struct net_device* dev)
-{
- int retval;
-
- retval = request_irq(dev->irq, sonic_interrupt, IRQ_FLG_FAST,
- "sonic", dev);
- if (retval) {
- printk(KERN_ERR "%s: unable to get IRQ %d.\n",
- dev->name, dev->irq);
- goto err;
- }
- /* Under the A/UX interrupt scheme, the onboard SONIC interrupt comes
- * in at priority level 3. However, we sometimes get the level 2 inter-
- * rupt as well, which must prevent re-entrance of the sonic handler.
- */
- if (dev->irq == IRQ_AUTO_3) {
- retval = request_irq(IRQ_NUBUS_9, macsonic_interrupt,
- IRQ_FLG_FAST, "sonic", dev);
- if (retval) {
- printk(KERN_ERR "%s: unable to get IRQ %d.\n",
- dev->name, IRQ_NUBUS_9);
- goto err_irq;
- }
- }
- retval = sonic_open(dev);
- if (retval)
- goto err_irq_nubus;
- return 0;
-
-err_irq_nubus:
- if (dev->irq == IRQ_AUTO_3)
- free_irq(IRQ_NUBUS_9, dev);
-err_irq:
- free_irq(dev->irq, dev);
-err:
- return retval;
-}
-
-static int macsonic_close(struct net_device* dev)
-{
- int err;
- err = sonic_close(dev);
- free_irq(dev->irq, dev);
- if (dev->irq == IRQ_AUTO_3)
- free_irq(IRQ_NUBUS_9, dev);
- return err;
-}
-
-static const struct net_device_ops macsonic_netdev_ops = {
- .ndo_open = macsonic_open,
- .ndo_stop = macsonic_close,
- .ndo_start_xmit = sonic_send_packet,
- .ndo_set_multicast_list = sonic_multicast_list,
- .ndo_tx_timeout = sonic_tx_timeout,
- .ndo_get_stats = sonic_get_stats,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_set_mac_address = eth_mac_addr,
-};
-
-static int __devinit macsonic_init(struct net_device *dev)
-{
- struct sonic_local* lp = netdev_priv(dev);
-
- /* Allocate the entire chunk of memory for the descriptors.
- Note that this cannot cross a 64K boundary. */
- if ((lp->descriptors = dma_alloc_coherent(lp->device,
- SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
- &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
- printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n",
- dev_name(lp->device));
- return -ENOMEM;
- }
-
- /* Now set up the pointers to point to the appropriate places */
- lp->cda = lp->descriptors;
- lp->tda = lp->cda + (SIZEOF_SONIC_CDA
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
-
- lp->cda_laddr = lp->descriptors_laddr;
- lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
-
- dev->netdev_ops = &macsonic_netdev_ops;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- /*
- * clear tally counter
- */
- SONIC_WRITE(SONIC_CRCT, 0xffff);
- SONIC_WRITE(SONIC_FAET, 0xffff);
- SONIC_WRITE(SONIC_MPT, 0xffff);
-
- return 0;
-}
-
-#define INVALID_MAC(mac) (memcmp(mac, "\x08\x00\x07", 3) && \
- memcmp(mac, "\x00\xA0\x40", 3) && \
- memcmp(mac, "\x00\x80\x19", 3) && \
- memcmp(mac, "\x00\x05\x02", 3))
-
-static void __devinit mac_onboard_sonic_ethernet_addr(struct net_device *dev)
-{
- struct sonic_local *lp = netdev_priv(dev);
- const int prom_addr = ONBOARD_SONIC_PROM_BASE;
- unsigned short val;
-
- /*
- * On NuBus boards we can sometimes look in the ROM resources.
- * No such luck for comm-slot/onboard.
- * On the PowerBook 520, the PROM base address is a mystery.
- */
- if (hwreg_present((void *)prom_addr)) {
- int i;
-
- for (i = 0; i < 6; i++)
- dev->dev_addr[i] = SONIC_READ_PROM(i);
- if (!INVALID_MAC(dev->dev_addr))
- return;
-
- /*
- * Most of the time, the address is bit-reversed. The NetBSD
- * source has a rather long and detailed historical account of
- * why this is so.
- */
- bit_reverse_addr(dev->dev_addr);
- if (!INVALID_MAC(dev->dev_addr))
- return;
-
- /*
- * If we still have what seems to be a bogus address, we'll
- * look in the CAM. The top entry should be ours.
- */
- printk(KERN_WARNING "macsonic: MAC address in PROM seems "
- "to be invalid, trying CAM\n");
- } else {
- printk(KERN_WARNING "macsonic: cannot read MAC address from "
- "PROM, trying CAM\n");
- }
-
- /* This only works if MacOS has already initialized the card. */
-
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
- SONIC_WRITE(SONIC_CEP, 15);
-
- val = SONIC_READ(SONIC_CAP2);
- dev->dev_addr[5] = val >> 8;
- dev->dev_addr[4] = val & 0xff;
- val = SONIC_READ(SONIC_CAP1);
- dev->dev_addr[3] = val >> 8;
- dev->dev_addr[2] = val & 0xff;
- val = SONIC_READ(SONIC_CAP0);
- dev->dev_addr[1] = val >> 8;
- dev->dev_addr[0] = val & 0xff;
-
- if (!INVALID_MAC(dev->dev_addr))
- return;
-
- /* Still nonsense ... messed up someplace! */
-
- printk(KERN_WARNING "macsonic: MAC address in CAM entry 15 "
- "seems invalid, will use a random MAC\n");
- random_ether_addr(dev->dev_addr);
-}
-
-static int __devinit mac_onboard_sonic_probe(struct net_device *dev)
-{
- /* Bwahahaha */
- static int once_is_more_than_enough;
- struct sonic_local* lp = netdev_priv(dev);
- int sr;
- int commslot = 0;
-
- if (once_is_more_than_enough)
- return -ENODEV;
- once_is_more_than_enough = 1;
-
- if (!MACH_IS_MAC)
- return -ENODEV;
-
- if (macintosh_config->ether_type != MAC_ETHER_SONIC)
- return -ENODEV;
-
- printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. ");
-
- /* Bogus probing, on the models which may or may not have
- Ethernet (BTW, the Ethernet *is* always at the same
- address, and nothing else lives there, at least if Apple's
- documentation is to be believed) */
- if (macintosh_config->ident == MAC_MODEL_Q630 ||
- macintosh_config->ident == MAC_MODEL_P588 ||
- macintosh_config->ident == MAC_MODEL_P575 ||
- macintosh_config->ident == MAC_MODEL_C610) {
- unsigned long flags;
- int card_present;
-
- local_irq_save(flags);
- card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
- local_irq_restore(flags);
-
- if (!card_present) {
- printk("none.\n");
- return -ENODEV;
- }
- commslot = 1;
- }
-
- printk("yes\n");
-
- /* Danger! My arms are flailing wildly! You *must* set lp->reg_offset
- * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
- dev->base_addr = ONBOARD_SONIC_REGISTERS;
- if (via_alt_mapping)
- dev->irq = IRQ_AUTO_3;
- else
- dev->irq = IRQ_NUBUS_9;
-
- if (!sonic_version_printed) {
- printk(KERN_INFO "%s", version);
- sonic_version_printed = 1;
- }
- printk(KERN_INFO "%s: onboard / comm-slot SONIC at 0x%08lx\n",
- dev_name(lp->device), dev->base_addr);
-
- /* The PowerBook's SONIC is 16 bit always. */
- if (macintosh_config->ident == MAC_MODEL_PB520) {
- lp->reg_offset = 0;
- lp->dma_bitmode = SONIC_BITMODE16;
- sr = SONIC_READ(SONIC_SR);
- } else if (commslot) {
- /* Some of the comm-slot cards are 16 bit. But some
- of them are not. The 32-bit cards use offset 2 and
- have known revisions, we try reading the revision
- register at offset 2, if we don't get a known revision
- we assume 16 bit at offset 0. */
- lp->reg_offset = 2;
- lp->dma_bitmode = SONIC_BITMODE16;
-
- sr = SONIC_READ(SONIC_SR);
- if (sr == 0x0004 || sr == 0x0006 || sr == 0x0100 || sr == 0x0101)
- /* 83932 is 0x0004 or 0x0006, 83934 is 0x0100 or 0x0101 */
- lp->dma_bitmode = SONIC_BITMODE32;
- else {
- lp->dma_bitmode = SONIC_BITMODE16;
- lp->reg_offset = 0;
- sr = SONIC_READ(SONIC_SR);
- }
- } else {
- /* All onboard cards are at offset 2 with 32 bit DMA. */
- lp->reg_offset = 2;
- lp->dma_bitmode = SONIC_BITMODE32;
- sr = SONIC_READ(SONIC_SR);
- }
- printk(KERN_INFO
- "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
- dev_name(lp->device), sr, lp->dma_bitmode?32:16, lp->reg_offset);
-
-#if 0 /* This is sometimes useful to find out how MacOS configured the card. */
- printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
- SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
-#endif
-
- /* Software reset, then initialize control registers. */
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
-
- SONIC_WRITE(SONIC_DCR, SONIC_DCR_EXBUS | SONIC_DCR_BMS |
- SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
- (lp->dma_bitmode ? SONIC_DCR_DW : 0));
-
- /* This *must* be written back to in order to restore the
- * extended programmable output bits, as it may not have been
- * initialised since the hardware reset. */
- SONIC_WRITE(SONIC_DCR2, 0);
-
- /* Clear *and* disable interrupts to be on the safe side */
- SONIC_WRITE(SONIC_IMR, 0);
- SONIC_WRITE(SONIC_ISR, 0x7fff);
-
- /* Now look for the MAC address. */
- mac_onboard_sonic_ethernet_addr(dev);
-
- /* Shared init code */
- return macsonic_init(dev);
-}
-
-static int __devinit mac_nubus_sonic_ethernet_addr(struct net_device *dev,
- unsigned long prom_addr,
- int id)
-{
- int i;
- for(i = 0; i < 6; i++)
- dev->dev_addr[i] = SONIC_READ_PROM(i);
-
- /* Some of the addresses are bit-reversed */
- if (id != MACSONIC_DAYNA)
- bit_reverse_addr(dev->dev_addr);
-
- return 0;
-}
-
-static int __devinit macsonic_ident(struct nubus_dev *ndev)
-{
- if (ndev->dr_hw == NUBUS_DRHW_ASANTE_LC &&
- ndev->dr_sw == NUBUS_DRSW_SONIC_LC)
- return MACSONIC_DAYNALINK;
- if (ndev->dr_hw == NUBUS_DRHW_SONIC &&
- ndev->dr_sw == NUBUS_DRSW_APPLE) {
- /* There has to be a better way to do this... */
- if (strstr(ndev->board->name, "DuoDock"))
- return MACSONIC_DUODOCK;
- else
- return MACSONIC_APPLE;
- }
-
- if (ndev->dr_hw == NUBUS_DRHW_SMC9194 &&
- ndev->dr_sw == NUBUS_DRSW_DAYNA)
- return MACSONIC_DAYNA;
-
- if (ndev->dr_hw == NUBUS_DRHW_APPLE_SONIC_LC &&
- ndev->dr_sw == 0) { /* huh? */
- return MACSONIC_APPLE16;
- }
- return -1;
-}
-
-static int __devinit mac_nubus_sonic_probe(struct net_device *dev)
-{
- static int slots;
- struct nubus_dev* ndev = NULL;
- struct sonic_local* lp = netdev_priv(dev);
- unsigned long base_addr, prom_addr;
- u16 sonic_dcr;
- int id = -1;
- int reg_offset, dma_bitmode;
-
- /* Find the first SONIC that hasn't been initialized already */
- while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK,
- NUBUS_TYPE_ETHERNET, ndev)) != NULL)
- {
- /* Have we seen it already? */
- if (slots & (1<<ndev->board->slot))
- continue;
- slots |= 1<<ndev->board->slot;
-
- /* Is it one of ours? */
- if ((id = macsonic_ident(ndev)) != -1)
- break;
- }
-
- if (ndev == NULL)
- return -ENODEV;
-
- switch (id) {
- case MACSONIC_DUODOCK:
- base_addr = ndev->board->slot_addr + DUODOCK_SONIC_REGISTERS;
- prom_addr = ndev->board->slot_addr + DUODOCK_SONIC_PROM_BASE;
- sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 |
- SONIC_DCR_TFT0;
- reg_offset = 2;
- dma_bitmode = SONIC_BITMODE32;
- break;
- case MACSONIC_APPLE:
- base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
- prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
- sonic_dcr = SONIC_DCR_BMS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0;
- reg_offset = 0;
- dma_bitmode = SONIC_BITMODE32;
- break;
- case MACSONIC_APPLE16:
- base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
- prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
- sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
- SONIC_DCR_PO1 | SONIC_DCR_BMS;
- reg_offset = 0;
- dma_bitmode = SONIC_BITMODE16;
- break;
- case MACSONIC_DAYNALINK:
- base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
- prom_addr = ndev->board->slot_addr + DAYNALINK_PROM_BASE;
- sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
- SONIC_DCR_PO1 | SONIC_DCR_BMS;
- reg_offset = 0;
- dma_bitmode = SONIC_BITMODE16;
- break;
- case MACSONIC_DAYNA:
- base_addr = ndev->board->slot_addr + DAYNA_SONIC_REGISTERS;
- prom_addr = ndev->board->slot_addr + DAYNA_SONIC_MAC_ADDR;
- sonic_dcr = SONIC_DCR_BMS |
- SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1;
- reg_offset = 0;
- dma_bitmode = SONIC_BITMODE16;
- break;
- default:
- printk(KERN_ERR "macsonic: WTF, id is %d\n", id);
- return -ENODEV;
- }
-
- /* Danger! My arms are flailing wildly! You *must* set lp->reg_offset
- * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
- dev->base_addr = base_addr;
- lp->reg_offset = reg_offset;
- lp->dma_bitmode = dma_bitmode;
- dev->irq = SLOT2IRQ(ndev->board->slot);
-
- if (!sonic_version_printed) {
- printk(KERN_INFO "%s", version);
- sonic_version_printed = 1;
- }
- printk(KERN_INFO "%s: %s in slot %X\n",
- dev_name(lp->device), ndev->board->name, ndev->board->slot);
- printk(KERN_INFO "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
- dev_name(lp->device), SONIC_READ(SONIC_SR), dma_bitmode?32:16, reg_offset);
-
-#if 0 /* This is sometimes useful to find out how MacOS configured the card. */
- printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
- SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
-#endif
-
- /* Software reset, then initialize control registers. */
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
- SONIC_WRITE(SONIC_DCR, sonic_dcr | (dma_bitmode ? SONIC_DCR_DW : 0));
- /* This *must* be written back to in order to restore the
- * extended programmable output bits, since it may not have been
- * initialised since the hardware reset. */
- SONIC_WRITE(SONIC_DCR2, 0);
-
- /* Clear *and* disable interrupts to be on the safe side */
- SONIC_WRITE(SONIC_IMR, 0);
- SONIC_WRITE(SONIC_ISR, 0x7fff);
-
- /* Now look for the MAC address. */
- if (mac_nubus_sonic_ethernet_addr(dev, prom_addr, id) != 0)
- return -ENODEV;
-
- /* Shared init code */
- return macsonic_init(dev);
-}
-
-static int __devinit mac_sonic_probe(struct platform_device *pdev)
-{
- struct net_device *dev;
- struct sonic_local *lp;
- int err;
-
- dev = alloc_etherdev(sizeof(struct sonic_local));
- if (!dev)
- return -ENOMEM;
-
- lp = netdev_priv(dev);
- lp->device = &pdev->dev;
- SET_NETDEV_DEV(dev, &pdev->dev);
- platform_set_drvdata(pdev, dev);
-
- /* This will catch fatal stuff like -ENOMEM as well as success */
- err = mac_onboard_sonic_probe(dev);
- if (err == 0)
- goto found;
- if (err != -ENODEV)
- goto out;
- err = mac_nubus_sonic_probe(dev);
- if (err)
- goto out;
-found:
- err = register_netdev(dev);
- if (err)
- goto out;
-
- printk("%s: MAC %pM IRQ %d\n", dev->name, dev->dev_addr, dev->irq);
-
- return 0;
-
-out:
- free_netdev(dev);
-
- return err;
-}
-
-MODULE_DESCRIPTION("Macintosh SONIC ethernet driver");
-module_param(sonic_debug, int, 0);
-MODULE_PARM_DESC(sonic_debug, "macsonic debug level (1-4)");
-MODULE_ALIAS("platform:macsonic");
-
-#include "sonic.c"
-
-static int __devexit mac_sonic_device_remove (struct platform_device *pdev)
-{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct sonic_local* lp = netdev_priv(dev);
-
- unregister_netdev(dev);
- dma_free_coherent(lp->device, SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
- lp->descriptors, lp->descriptors_laddr);
- free_netdev(dev);
-
- return 0;
-}
-
-static struct platform_driver mac_sonic_driver = {
- .probe = mac_sonic_probe,
- .remove = __devexit_p(mac_sonic_device_remove),
- .driver = {
- .name = mac_sonic_string,
- .owner = THIS_MODULE,
- },
-};
-
-static int __init mac_sonic_init_module(void)
-{
- return platform_driver_register(&mac_sonic_driver);
-}
-
-static void __exit mac_sonic_cleanup_module(void)
-{
- platform_driver_unregister(&mac_sonic_driver);
-}
-
-module_init(mac_sonic_init_module);
-module_exit(mac_sonic_cleanup_module);
+++ /dev/null
-/* natsemi.c: A Linux PCI Ethernet driver for the NatSemi DP8381x series. */
-/*
- Written/copyright 1999-2001 by Donald Becker.
- Portions copyright (c) 2001,2002 Sun Microsystems (thockin@sun.com)
- Portions copyright 2001,2002 Manfred Spraul (manfred@colorfullife.com)
- Portions copyright 2004 Harald Welte <laforge@gnumonks.org>
-
- This software may be used and distributed according to the terms of
- the GNU General Public License (GPL), incorporated herein by reference.
- Drivers based on or derived from this code fall under the GPL and must
- retain the authorship, copyright and license notice. This file is not
- a complete program and may only be used when the entire operating
- system is licensed under the GPL. License for under other terms may be
- available. Contact the original author for details.
-
- The original author may be reached as becker@scyld.com, or at
- Scyld Computing Corporation
- 410 Severn Ave., Suite 210
- Annapolis MD 21403
-
- Support information and updates available at
- http://www.scyld.com/network/netsemi.html
- [link no longer provides useful info -jgarzik]
-
-
- TODO:
- * big endian support with CFG:BEM instead of cpu_to_le32
-*/
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/ethtool.h>
-#include <linux/delay.h>
-#include <linux/rtnetlink.h>
-#include <linux/mii.h>
-#include <linux/crc32.h>
-#include <linux/bitops.h>
-#include <linux/prefetch.h>
-#include <asm/processor.h> /* Processor type for cache alignment. */
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-
-#define DRV_NAME "natsemi"
-#define DRV_VERSION "2.1"
-#define DRV_RELDATE "Sept 11, 2006"
-
-#define RX_OFFSET 2
-
-/* Updated to recommendations in pci-skeleton v2.03. */
-
-/* The user-configurable values.
- These may be modified when a driver module is loaded.*/
-
-#define NATSEMI_DEF_MSG (NETIF_MSG_DRV | \
- NETIF_MSG_LINK | \
- NETIF_MSG_WOL | \
- NETIF_MSG_RX_ERR | \
- NETIF_MSG_TX_ERR)
-static int debug = -1;
-
-static int mtu;
-
-/* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
- This chip uses a 512 element hash table based on the Ethernet CRC. */
-static const int multicast_filter_limit = 100;
-
-/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
- Setting to > 1518 effectively disables this feature. */
-static int rx_copybreak;
-
-static int dspcfg_workaround = 1;
-
-/* Used to pass the media type, etc.
- Both 'options[]' and 'full_duplex[]' should exist for driver
- interoperability.
- The media type is usually passed in 'options[]'.
-*/
-#define MAX_UNITS 8 /* More are supported, limit only on options */
-static int options[MAX_UNITS];
-static int full_duplex[MAX_UNITS];
-
-/* Operational parameters that are set at compile time. */
-
-/* Keep the ring sizes a power of two for compile efficiency.
- The compiler will convert <unsigned>'%'<2^N> into a bit mask.
- Making the Tx ring too large decreases the effectiveness of channel
- bonding and packet priority.
- There are no ill effects from too-large receive rings. */
-#define TX_RING_SIZE 16
-#define TX_QUEUE_LEN 10 /* Limit ring entries actually used, min 4. */
-#define RX_RING_SIZE 32
-
-/* Operational parameters that usually are not changed. */
-/* Time in jiffies before concluding the transmitter is hung. */
-#define TX_TIMEOUT (2*HZ)
-
-#define NATSEMI_HW_TIMEOUT 400
-#define NATSEMI_TIMER_FREQ 5*HZ
-#define NATSEMI_PG0_NREGS 64
-#define NATSEMI_RFDR_NREGS 8
-#define NATSEMI_PG1_NREGS 4
-#define NATSEMI_NREGS (NATSEMI_PG0_NREGS + NATSEMI_RFDR_NREGS + \
- NATSEMI_PG1_NREGS)
-#define NATSEMI_REGS_VER 1 /* v1 added RFDR registers */
-#define NATSEMI_REGS_SIZE (NATSEMI_NREGS * sizeof(u32))
-
-/* Buffer sizes:
- * The nic writes 32-bit values, even if the upper bytes of
- * a 32-bit value are beyond the end of the buffer.
- */
-#define NATSEMI_HEADERS 22 /* 2*mac,type,vlan,crc */
-#define NATSEMI_PADDING 16 /* 2 bytes should be sufficient */
-#define NATSEMI_LONGPKT 1518 /* limit for normal packets */
-#define NATSEMI_RX_LIMIT 2046 /* maximum supported by hardware */
-
-/* These identify the driver base version and may not be removed. */
-static const char version[] __devinitconst =
- KERN_INFO DRV_NAME " dp8381x driver, version "
- DRV_VERSION ", " DRV_RELDATE "\n"
- " originally by Donald Becker <becker@scyld.com>\n"
- " 2.4.x kernel port by Jeff Garzik, Tjeerd Mulder\n";
-
-MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
-MODULE_DESCRIPTION("National Semiconductor DP8381x series PCI Ethernet driver");
-MODULE_LICENSE("GPL");
-
-module_param(mtu, int, 0);
-module_param(debug, int, 0);
-module_param(rx_copybreak, int, 0);
-module_param(dspcfg_workaround, int, 0);
-module_param_array(options, int, NULL, 0);
-module_param_array(full_duplex, int, NULL, 0);
-MODULE_PARM_DESC(mtu, "DP8381x MTU (all boards)");
-MODULE_PARM_DESC(debug, "DP8381x default debug level");
-MODULE_PARM_DESC(rx_copybreak,
- "DP8381x copy breakpoint for copy-only-tiny-frames");
-MODULE_PARM_DESC(dspcfg_workaround, "DP8381x: control DspCfg workaround");
-MODULE_PARM_DESC(options,
- "DP8381x: Bits 0-3: media type, bit 17: full duplex");
-MODULE_PARM_DESC(full_duplex, "DP8381x full duplex setting(s) (1)");
-
-/*
- Theory of Operation
-
-I. Board Compatibility
-
-This driver is designed for National Semiconductor DP83815 PCI Ethernet NIC.
-It also works with other chips in in the DP83810 series.
-
-II. Board-specific settings
-
-This driver requires the PCI interrupt line to be valid.
-It honors the EEPROM-set values.
-
-III. Driver operation
-
-IIIa. Ring buffers
-
-This driver uses two statically allocated fixed-size descriptor lists
-formed into rings by a branch from the final descriptor to the beginning of
-the list. The ring sizes are set at compile time by RX/TX_RING_SIZE.
-The NatSemi design uses a 'next descriptor' pointer that the driver forms
-into a list.
-
-IIIb/c. Transmit/Receive Structure
-
-This driver uses a zero-copy receive and transmit scheme.
-The driver allocates full frame size skbuffs for the Rx ring buffers at
-open() time and passes the skb->data field to the chip as receive data
-buffers. When an incoming frame is less than RX_COPYBREAK bytes long,
-a fresh skbuff is allocated and the frame is copied to the new skbuff.
-When the incoming frame is larger, the skbuff is passed directly up the
-protocol stack. Buffers consumed this way are replaced by newly allocated
-skbuffs in a later phase of receives.
-
-The RX_COPYBREAK value is chosen to trade-off the memory wasted by
-using a full-sized skbuff for small frames vs. the copying costs of larger
-frames. New boards are typically used in generously configured machines
-and the underfilled buffers have negligible impact compared to the benefit of
-a single allocation size, so the default value of zero results in never
-copying packets. When copying is done, the cost is usually mitigated by using
-a combined copy/checksum routine. Copying also preloads the cache, which is
-most useful with small frames.
-
-A subtle aspect of the operation is that unaligned buffers are not permitted
-by the hardware. Thus the IP header at offset 14 in an ethernet frame isn't
-longword aligned for further processing. On copies frames are put into the
-skbuff at an offset of "+2", 16-byte aligning the IP header.
-
-IIId. Synchronization
-
-Most operations are synchronized on the np->lock irq spinlock, except the
-receive and transmit paths which are synchronised using a combination of
-hardware descriptor ownership, disabling interrupts and NAPI poll scheduling.
-
-IVb. References
-
-http://www.scyld.com/expert/100mbps.html
-http://www.scyld.com/expert/NWay.html
-Datasheet is available from:
-http://www.national.com/pf/DP/DP83815.html
-
-IVc. Errata
-
-None characterised.
-*/
-
-
-
-/*
- * Support for fibre connections on Am79C874:
- * This phy needs a special setup when connected to a fibre cable.
- * http://www.amd.com/files/connectivitysolutions/networking/archivednetworking/22235.pdf
- */
-#define PHYID_AM79C874 0x0022561b
-
-enum {
- MII_MCTRL = 0x15, /* mode control register */
- MII_FX_SEL = 0x0001, /* 100BASE-FX (fiber) */
- MII_EN_SCRM = 0x0004, /* enable scrambler (tp) */
-};
-
-enum {
- NATSEMI_FLAG_IGNORE_PHY = 0x1,
-};
-
-/* array of board data directly indexed by pci_tbl[x].driver_data */
-static struct {
- const char *name;
- unsigned long flags;
- unsigned int eeprom_size;
-} natsemi_pci_info[] __devinitdata = {
- { "Aculab E1/T1 PMXc cPCI carrier card", NATSEMI_FLAG_IGNORE_PHY, 128 },
- { "NatSemi DP8381[56]", 0, 24 },
-};
-
-static DEFINE_PCI_DEVICE_TABLE(natsemi_pci_tbl) = {
- { PCI_VENDOR_ID_NS, 0x0020, 0x12d9, 0x000c, 0, 0, 0 },
- { PCI_VENDOR_ID_NS, 0x0020, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
- { } /* terminate list */
-};
-MODULE_DEVICE_TABLE(pci, natsemi_pci_tbl);
-
-/* Offsets to the device registers.
- Unlike software-only systems, device drivers interact with complex hardware.
- It's not useful to define symbolic names for every register bit in the
- device.
-*/
-enum register_offsets {
- ChipCmd = 0x00,
- ChipConfig = 0x04,
- EECtrl = 0x08,
- PCIBusCfg = 0x0C,
- IntrStatus = 0x10,
- IntrMask = 0x14,
- IntrEnable = 0x18,
- IntrHoldoff = 0x1C, /* DP83816 only */
- TxRingPtr = 0x20,
- TxConfig = 0x24,
- RxRingPtr = 0x30,
- RxConfig = 0x34,
- ClkRun = 0x3C,
- WOLCmd = 0x40,
- PauseCmd = 0x44,
- RxFilterAddr = 0x48,
- RxFilterData = 0x4C,
- BootRomAddr = 0x50,
- BootRomData = 0x54,
- SiliconRev = 0x58,
- StatsCtrl = 0x5C,
- StatsData = 0x60,
- RxPktErrs = 0x60,
- RxMissed = 0x68,
- RxCRCErrs = 0x64,
- BasicControl = 0x80,
- BasicStatus = 0x84,
- AnegAdv = 0x90,
- AnegPeer = 0x94,
- PhyStatus = 0xC0,
- MIntrCtrl = 0xC4,
- MIntrStatus = 0xC8,
- PhyCtrl = 0xE4,
-
- /* These are from the spec, around page 78... on a separate table.
- * The meaning of these registers depend on the value of PGSEL. */
- PGSEL = 0xCC,
- PMDCSR = 0xE4,
- TSTDAT = 0xFC,
- DSPCFG = 0xF4,
- SDCFG = 0xF8
-};
-/* the values for the 'magic' registers above (PGSEL=1) */
-#define PMDCSR_VAL 0x189c /* enable preferred adaptation circuitry */
-#define TSTDAT_VAL 0x0
-#define DSPCFG_VAL 0x5040
-#define SDCFG_VAL 0x008c /* set voltage thresholds for Signal Detect */
-#define DSPCFG_LOCK 0x20 /* coefficient lock bit in DSPCFG */
-#define DSPCFG_COEF 0x1000 /* see coefficient (in TSTDAT) bit in DSPCFG */
-#define TSTDAT_FIXED 0xe8 /* magic number for bad coefficients */
-
-/* misc PCI space registers */
-enum pci_register_offsets {
- PCIPM = 0x44,
-};
-
-enum ChipCmd_bits {
- ChipReset = 0x100,
- RxReset = 0x20,
- TxReset = 0x10,
- RxOff = 0x08,
- RxOn = 0x04,
- TxOff = 0x02,
- TxOn = 0x01,
-};
-
-enum ChipConfig_bits {
- CfgPhyDis = 0x200,
- CfgPhyRst = 0x400,
- CfgExtPhy = 0x1000,
- CfgAnegEnable = 0x2000,
- CfgAneg100 = 0x4000,
- CfgAnegFull = 0x8000,
- CfgAnegDone = 0x8000000,
- CfgFullDuplex = 0x20000000,
- CfgSpeed100 = 0x40000000,
- CfgLink = 0x80000000,
-};
-
-enum EECtrl_bits {
- EE_ShiftClk = 0x04,
- EE_DataIn = 0x01,
- EE_ChipSelect = 0x08,
- EE_DataOut = 0x02,
- MII_Data = 0x10,
- MII_Write = 0x20,
- MII_ShiftClk = 0x40,
-};
-
-enum PCIBusCfg_bits {
- EepromReload = 0x4,
-};
-
-/* Bits in the interrupt status/mask registers. */
-enum IntrStatus_bits {
- IntrRxDone = 0x0001,
- IntrRxIntr = 0x0002,
- IntrRxErr = 0x0004,
- IntrRxEarly = 0x0008,
- IntrRxIdle = 0x0010,
- IntrRxOverrun = 0x0020,
- IntrTxDone = 0x0040,
- IntrTxIntr = 0x0080,
- IntrTxErr = 0x0100,
- IntrTxIdle = 0x0200,
- IntrTxUnderrun = 0x0400,
- StatsMax = 0x0800,
- SWInt = 0x1000,
- WOLPkt = 0x2000,
- LinkChange = 0x4000,
- IntrHighBits = 0x8000,
- RxStatusFIFOOver = 0x10000,
- IntrPCIErr = 0xf00000,
- RxResetDone = 0x1000000,
- TxResetDone = 0x2000000,
- IntrAbnormalSummary = 0xCD20,
-};
-
-/*
- * Default Interrupts:
- * Rx OK, Rx Packet Error, Rx Overrun,
- * Tx OK, Tx Packet Error, Tx Underrun,
- * MIB Service, Phy Interrupt, High Bits,
- * Rx Status FIFO overrun,
- * Received Target Abort, Received Master Abort,
- * Signalled System Error, Received Parity Error
- */
-#define DEFAULT_INTR 0x00f1cd65
-
-enum TxConfig_bits {
- TxDrthMask = 0x3f,
- TxFlthMask = 0x3f00,
- TxMxdmaMask = 0x700000,
- TxMxdma_512 = 0x0,
- TxMxdma_4 = 0x100000,
- TxMxdma_8 = 0x200000,
- TxMxdma_16 = 0x300000,
- TxMxdma_32 = 0x400000,
- TxMxdma_64 = 0x500000,
- TxMxdma_128 = 0x600000,
- TxMxdma_256 = 0x700000,
- TxCollRetry = 0x800000,
- TxAutoPad = 0x10000000,
- TxMacLoop = 0x20000000,
- TxHeartIgn = 0x40000000,
- TxCarrierIgn = 0x80000000
-};
-
-/*
- * Tx Configuration:
- * - 256 byte DMA burst length
- * - fill threshold 512 bytes (i.e. restart DMA when 512 bytes are free)
- * - 64 bytes initial drain threshold (i.e. begin actual transmission
- * when 64 byte are in the fifo)
- * - on tx underruns, increase drain threshold by 64.
- * - at most use a drain threshold of 1472 bytes: The sum of the fill
- * threshold and the drain threshold must be less than 2016 bytes.
- *
- */
-#define TX_FLTH_VAL ((512/32) << 8)
-#define TX_DRTH_VAL_START (64/32)
-#define TX_DRTH_VAL_INC 2
-#define TX_DRTH_VAL_LIMIT (1472/32)
-
-enum RxConfig_bits {
- RxDrthMask = 0x3e,
- RxMxdmaMask = 0x700000,
- RxMxdma_512 = 0x0,
- RxMxdma_4 = 0x100000,
- RxMxdma_8 = 0x200000,
- RxMxdma_16 = 0x300000,
- RxMxdma_32 = 0x400000,
- RxMxdma_64 = 0x500000,
- RxMxdma_128 = 0x600000,
- RxMxdma_256 = 0x700000,
- RxAcceptLong = 0x8000000,
- RxAcceptTx = 0x10000000,
- RxAcceptRunt = 0x40000000,
- RxAcceptErr = 0x80000000
-};
-#define RX_DRTH_VAL (128/8)
-
-enum ClkRun_bits {
- PMEEnable = 0x100,
- PMEStatus = 0x8000,
-};
-
-enum WolCmd_bits {
- WakePhy = 0x1,
- WakeUnicast = 0x2,
- WakeMulticast = 0x4,
- WakeBroadcast = 0x8,
- WakeArp = 0x10,
- WakePMatch0 = 0x20,
- WakePMatch1 = 0x40,
- WakePMatch2 = 0x80,
- WakePMatch3 = 0x100,
- WakeMagic = 0x200,
- WakeMagicSecure = 0x400,
- SecureHack = 0x100000,
- WokePhy = 0x400000,
- WokeUnicast = 0x800000,
- WokeMulticast = 0x1000000,
- WokeBroadcast = 0x2000000,
- WokeArp = 0x4000000,
- WokePMatch0 = 0x8000000,
- WokePMatch1 = 0x10000000,
- WokePMatch2 = 0x20000000,
- WokePMatch3 = 0x40000000,
- WokeMagic = 0x80000000,
- WakeOptsSummary = 0x7ff
-};
-
-enum RxFilterAddr_bits {
- RFCRAddressMask = 0x3ff,
- AcceptMulticast = 0x00200000,
- AcceptMyPhys = 0x08000000,
- AcceptAllPhys = 0x10000000,
- AcceptAllMulticast = 0x20000000,
- AcceptBroadcast = 0x40000000,
- RxFilterEnable = 0x80000000
-};
-
-enum StatsCtrl_bits {
- StatsWarn = 0x1,
- StatsFreeze = 0x2,
- StatsClear = 0x4,
- StatsStrobe = 0x8,
-};
-
-enum MIntrCtrl_bits {
- MICRIntEn = 0x2,
-};
-
-enum PhyCtrl_bits {
- PhyAddrMask = 0x1f,
-};
-
-#define PHY_ADDR_NONE 32
-#define PHY_ADDR_INTERNAL 1
-
-/* values we might find in the silicon revision register */
-#define SRR_DP83815_C 0x0302
-#define SRR_DP83815_D 0x0403
-#define SRR_DP83816_A4 0x0504
-#define SRR_DP83816_A5 0x0505
-
-/* The Rx and Tx buffer descriptors. */
-/* Note that using only 32 bit fields simplifies conversion to big-endian
- architectures. */
-struct netdev_desc {
- __le32 next_desc;
- __le32 cmd_status;
- __le32 addr;
- __le32 software_use;
-};
-
-/* Bits in network_desc.status */
-enum desc_status_bits {
- DescOwn=0x80000000, DescMore=0x40000000, DescIntr=0x20000000,
- DescNoCRC=0x10000000, DescPktOK=0x08000000,
- DescSizeMask=0xfff,
-
- DescTxAbort=0x04000000, DescTxFIFO=0x02000000,
- DescTxCarrier=0x01000000, DescTxDefer=0x00800000,
- DescTxExcDefer=0x00400000, DescTxOOWCol=0x00200000,
- DescTxExcColl=0x00100000, DescTxCollCount=0x000f0000,
-
- DescRxAbort=0x04000000, DescRxOver=0x02000000,
- DescRxDest=0x01800000, DescRxLong=0x00400000,
- DescRxRunt=0x00200000, DescRxInvalid=0x00100000,
- DescRxCRC=0x00080000, DescRxAlign=0x00040000,
- DescRxLoop=0x00020000, DesRxColl=0x00010000,
-};
-
-struct netdev_private {
- /* Descriptor rings first for alignment */
- dma_addr_t ring_dma;
- struct netdev_desc *rx_ring;
- struct netdev_desc *tx_ring;
- /* The addresses of receive-in-place skbuffs */
- struct sk_buff *rx_skbuff[RX_RING_SIZE];
- dma_addr_t rx_dma[RX_RING_SIZE];
- /* address of a sent-in-place packet/buffer, for later free() */
- struct sk_buff *tx_skbuff[TX_RING_SIZE];
- dma_addr_t tx_dma[TX_RING_SIZE];
- struct net_device *dev;
- struct napi_struct napi;
- /* Media monitoring timer */
- struct timer_list timer;
- /* Frequently used values: keep some adjacent for cache effect */
- struct pci_dev *pci_dev;
- struct netdev_desc *rx_head_desc;
- /* Producer/consumer ring indices */
- unsigned int cur_rx, dirty_rx;
- unsigned int cur_tx, dirty_tx;
- /* Based on MTU+slack. */
- unsigned int rx_buf_sz;
- int oom;
- /* Interrupt status */
- u32 intr_status;
- /* Do not touch the nic registers */
- int hands_off;
- /* Don't pay attention to the reported link state. */
- int ignore_phy;
- /* external phy that is used: only valid if dev->if_port != PORT_TP */
- int mii;
- int phy_addr_external;
- unsigned int full_duplex;
- /* Rx filter */
- u32 cur_rx_mode;
- u32 rx_filter[16];
- /* FIFO and PCI burst thresholds */
- u32 tx_config, rx_config;
- /* original contents of ClkRun register */
- u32 SavedClkRun;
- /* silicon revision */
- u32 srr;
- /* expected DSPCFG value */
- u16 dspcfg;
- int dspcfg_workaround;
- /* parms saved in ethtool format */
- u16 speed; /* The forced speed, 10Mb, 100Mb, gigabit */
- u8 duplex; /* Duplex, half or full */
- u8 autoneg; /* Autonegotiation enabled */
- /* MII transceiver section */
- u16 advertising;
- unsigned int iosize;
- spinlock_t lock;
- u32 msg_enable;
- /* EEPROM data */
- int eeprom_size;
-};
-
-static void move_int_phy(struct net_device *dev, int addr);
-static int eeprom_read(void __iomem *ioaddr, int location);
-static int mdio_read(struct net_device *dev, int reg);
-static void mdio_write(struct net_device *dev, int reg, u16 data);
-static void init_phy_fixup(struct net_device *dev);
-static int miiport_read(struct net_device *dev, int phy_id, int reg);
-static void miiport_write(struct net_device *dev, int phy_id, int reg, u16 data);
-static int find_mii(struct net_device *dev);
-static void natsemi_reset(struct net_device *dev);
-static void natsemi_reload_eeprom(struct net_device *dev);
-static void natsemi_stop_rxtx(struct net_device *dev);
-static int netdev_open(struct net_device *dev);
-static void do_cable_magic(struct net_device *dev);
-static void undo_cable_magic(struct net_device *dev);
-static void check_link(struct net_device *dev);
-static void netdev_timer(unsigned long data);
-static void dump_ring(struct net_device *dev);
-static void ns_tx_timeout(struct net_device *dev);
-static int alloc_ring(struct net_device *dev);
-static void refill_rx(struct net_device *dev);
-static void init_ring(struct net_device *dev);
-static void drain_tx(struct net_device *dev);
-static void drain_ring(struct net_device *dev);
-static void free_ring(struct net_device *dev);
-static void reinit_ring(struct net_device *dev);
-static void init_registers(struct net_device *dev);
-static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev);
-static irqreturn_t intr_handler(int irq, void *dev_instance);
-static void netdev_error(struct net_device *dev, int intr_status);
-static int natsemi_poll(struct napi_struct *napi, int budget);
-static void netdev_rx(struct net_device *dev, int *work_done, int work_to_do);
-static void netdev_tx_done(struct net_device *dev);
-static int natsemi_change_mtu(struct net_device *dev, int new_mtu);
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void natsemi_poll_controller(struct net_device *dev);
-#endif
-static void __set_rx_mode(struct net_device *dev);
-static void set_rx_mode(struct net_device *dev);
-static void __get_stats(struct net_device *dev);
-static struct net_device_stats *get_stats(struct net_device *dev);
-static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
-static int netdev_set_wol(struct net_device *dev, u32 newval);
-static int netdev_get_wol(struct net_device *dev, u32 *supported, u32 *cur);
-static int netdev_set_sopass(struct net_device *dev, u8 *newval);
-static int netdev_get_sopass(struct net_device *dev, u8 *data);
-static int netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd);
-static int netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd);
-static void enable_wol_mode(struct net_device *dev, int enable_intr);
-static int netdev_close(struct net_device *dev);
-static int netdev_get_regs(struct net_device *dev, u8 *buf);
-static int netdev_get_eeprom(struct net_device *dev, u8 *buf);
-static const struct ethtool_ops ethtool_ops;
-
-#define NATSEMI_ATTR(_name) \
-static ssize_t natsemi_show_##_name(struct device *dev, \
- struct device_attribute *attr, char *buf); \
- static ssize_t natsemi_set_##_name(struct device *dev, \
- struct device_attribute *attr, \
- const char *buf, size_t count); \
- static DEVICE_ATTR(_name, 0644, natsemi_show_##_name, natsemi_set_##_name)
-
-#define NATSEMI_CREATE_FILE(_dev, _name) \
- device_create_file(&_dev->dev, &dev_attr_##_name)
-#define NATSEMI_REMOVE_FILE(_dev, _name) \
- device_remove_file(&_dev->dev, &dev_attr_##_name)
-
-NATSEMI_ATTR(dspcfg_workaround);
-
-static ssize_t natsemi_show_dspcfg_workaround(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct netdev_private *np = netdev_priv(to_net_dev(dev));
-
- return sprintf(buf, "%s\n", np->dspcfg_workaround ? "on" : "off");
-}
-
-static ssize_t natsemi_set_dspcfg_workaround(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct netdev_private *np = netdev_priv(to_net_dev(dev));
- int new_setting;
- unsigned long flags;
-
- /* Find out the new setting */
- if (!strncmp("on", buf, count - 1) || !strncmp("1", buf, count - 1))
- new_setting = 1;
- else if (!strncmp("off", buf, count - 1) ||
- !strncmp("0", buf, count - 1))
- new_setting = 0;
- else
- return count;
-
- spin_lock_irqsave(&np->lock, flags);
-
- np->dspcfg_workaround = new_setting;
-
- spin_unlock_irqrestore(&np->lock, flags);
-
- return count;
-}
-
-static inline void __iomem *ns_ioaddr(struct net_device *dev)
-{
- return (void __iomem *) dev->base_addr;
-}
-
-static inline void natsemi_irq_enable(struct net_device *dev)
-{
- writel(1, ns_ioaddr(dev) + IntrEnable);
- readl(ns_ioaddr(dev) + IntrEnable);
-}
-
-static inline void natsemi_irq_disable(struct net_device *dev)
-{
- writel(0, ns_ioaddr(dev) + IntrEnable);
- readl(ns_ioaddr(dev) + IntrEnable);
-}
-
-static void move_int_phy(struct net_device *dev, int addr)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = ns_ioaddr(dev);
- int target = 31;
-
- /*
- * The internal phy is visible on the external mii bus. Therefore we must
- * move it away before we can send commands to an external phy.
- * There are two addresses we must avoid:
- * - the address on the external phy that is used for transmission.
- * - the address that we want to access. User space can access phys
- * on the mii bus with SIOCGMIIREG/SIOCSMIIREG, independent from the
- * phy that is used for transmission.
- */
-
- if (target == addr)
- target--;
- if (target == np->phy_addr_external)
- target--;
- writew(target, ioaddr + PhyCtrl);
- readw(ioaddr + PhyCtrl);
- udelay(1);
-}
-
-static void __devinit natsemi_init_media (struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- u32 tmp;
-
- if (np->ignore_phy)
- netif_carrier_on(dev);
- else
- netif_carrier_off(dev);
-
- /* get the initial settings from hardware */
- tmp = mdio_read(dev, MII_BMCR);
- np->speed = (tmp & BMCR_SPEED100)? SPEED_100 : SPEED_10;
- np->duplex = (tmp & BMCR_FULLDPLX)? DUPLEX_FULL : DUPLEX_HALF;
- np->autoneg = (tmp & BMCR_ANENABLE)? AUTONEG_ENABLE: AUTONEG_DISABLE;
- np->advertising= mdio_read(dev, MII_ADVERTISE);
-
- if ((np->advertising & ADVERTISE_ALL) != ADVERTISE_ALL &&
- netif_msg_probe(np)) {
- printk(KERN_INFO "natsemi %s: Transceiver default autonegotiation %s "
- "10%s %s duplex.\n",
- pci_name(np->pci_dev),
- (mdio_read(dev, MII_BMCR) & BMCR_ANENABLE)?
- "enabled, advertise" : "disabled, force",
- (np->advertising &
- (ADVERTISE_100FULL|ADVERTISE_100HALF))?
- "0" : "",
- (np->advertising &
- (ADVERTISE_100FULL|ADVERTISE_10FULL))?
- "full" : "half");
- }
- if (netif_msg_probe(np))
- printk(KERN_INFO
- "natsemi %s: Transceiver status %#04x advertising %#04x.\n",
- pci_name(np->pci_dev), mdio_read(dev, MII_BMSR),
- np->advertising);
-
-}
-
-static const struct net_device_ops natsemi_netdev_ops = {
- .ndo_open = netdev_open,
- .ndo_stop = netdev_close,
- .ndo_start_xmit = start_tx,
- .ndo_get_stats = get_stats,
- .ndo_set_multicast_list = set_rx_mode,
- .ndo_change_mtu = natsemi_change_mtu,
- .ndo_do_ioctl = netdev_ioctl,
- .ndo_tx_timeout = ns_tx_timeout,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = natsemi_poll_controller,
-#endif
-};
-
-static int __devinit natsemi_probe1 (struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- struct net_device *dev;
- struct netdev_private *np;
- int i, option, irq, chip_idx = ent->driver_data;
- static int find_cnt = -1;
- resource_size_t iostart;
- unsigned long iosize;
- void __iomem *ioaddr;
- const int pcibar = 1; /* PCI base address register */
- int prev_eedata;
- u32 tmp;
-
-/* when built into the kernel, we only print version if device is found */
-#ifndef MODULE
- static int printed_version;
- if (!printed_version++)
- printk(version);
-#endif
-
- i = pci_enable_device(pdev);
- if (i) return i;
-
- /* natsemi has a non-standard PM control register
- * in PCI config space. Some boards apparently need
- * to be brought to D0 in this manner.
- */
- pci_read_config_dword(pdev, PCIPM, &tmp);
- if (tmp & PCI_PM_CTRL_STATE_MASK) {
- /* D0 state, disable PME assertion */
- u32 newtmp = tmp & ~PCI_PM_CTRL_STATE_MASK;
- pci_write_config_dword(pdev, PCIPM, newtmp);
- }
-
- find_cnt++;
- iostart = pci_resource_start(pdev, pcibar);
- iosize = pci_resource_len(pdev, pcibar);
- irq = pdev->irq;
-
- pci_set_master(pdev);
-
- dev = alloc_etherdev(sizeof (struct netdev_private));
- if (!dev)
- return -ENOMEM;
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- i = pci_request_regions(pdev, DRV_NAME);
- if (i)
- goto err_pci_request_regions;
-
- ioaddr = ioremap(iostart, iosize);
- if (!ioaddr) {
- i = -ENOMEM;
- goto err_ioremap;
- }
-
- /* Work around the dropped serial bit. */
- prev_eedata = eeprom_read(ioaddr, 6);
- for (i = 0; i < 3; i++) {
- int eedata = eeprom_read(ioaddr, i + 7);
- dev->dev_addr[i*2] = (eedata << 1) + (prev_eedata >> 15);
- dev->dev_addr[i*2+1] = eedata >> 7;
- prev_eedata = eedata;
- }
-
- /* Store MAC Address in perm_addr */
- memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN);
-
- dev->base_addr = (unsigned long __force) ioaddr;
- dev->irq = irq;
-
- np = netdev_priv(dev);
- netif_napi_add(dev, &np->napi, natsemi_poll, 64);
- np->dev = dev;
-
- np->pci_dev = pdev;
- pci_set_drvdata(pdev, dev);
- np->iosize = iosize;
- spin_lock_init(&np->lock);
- np->msg_enable = (debug >= 0) ? (1<<debug)-1 : NATSEMI_DEF_MSG;
- np->hands_off = 0;
- np->intr_status = 0;
- np->eeprom_size = natsemi_pci_info[chip_idx].eeprom_size;
- if (natsemi_pci_info[chip_idx].flags & NATSEMI_FLAG_IGNORE_PHY)
- np->ignore_phy = 1;
- else
- np->ignore_phy = 0;
- np->dspcfg_workaround = dspcfg_workaround;
-
- /* Initial port:
- * - If configured to ignore the PHY set up for external.
- * - If the nic was configured to use an external phy and if find_mii
- * finds a phy: use external port, first phy that replies.
- * - Otherwise: internal port.
- * Note that the phy address for the internal phy doesn't matter:
- * The address would be used to access a phy over the mii bus, but
- * the internal phy is accessed through mapped registers.
- */
- if (np->ignore_phy || readl(ioaddr + ChipConfig) & CfgExtPhy)
- dev->if_port = PORT_MII;
- else
- dev->if_port = PORT_TP;
- /* Reset the chip to erase previous misconfiguration. */
- natsemi_reload_eeprom(dev);
- natsemi_reset(dev);
-
- if (dev->if_port != PORT_TP) {
- np->phy_addr_external = find_mii(dev);
- /* If we're ignoring the PHY it doesn't matter if we can't
- * find one. */
- if (!np->ignore_phy && np->phy_addr_external == PHY_ADDR_NONE) {
- dev->if_port = PORT_TP;
- np->phy_addr_external = PHY_ADDR_INTERNAL;
- }
- } else {
- np->phy_addr_external = PHY_ADDR_INTERNAL;
- }
-
- option = find_cnt < MAX_UNITS ? options[find_cnt] : 0;
- if (dev->mem_start)
- option = dev->mem_start;
-
- /* The lower four bits are the media type. */
- if (option) {
- if (option & 0x200)
- np->full_duplex = 1;
- if (option & 15)
- printk(KERN_INFO
- "natsemi %s: ignoring user supplied media type %d",
- pci_name(np->pci_dev), option & 15);
- }
- if (find_cnt < MAX_UNITS && full_duplex[find_cnt])
- np->full_duplex = 1;
-
- dev->netdev_ops = &natsemi_netdev_ops;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- SET_ETHTOOL_OPS(dev, ðtool_ops);
-
- if (mtu)
- dev->mtu = mtu;
-
- natsemi_init_media(dev);
-
- /* save the silicon revision for later querying */
- np->srr = readl(ioaddr + SiliconRev);
- if (netif_msg_hw(np))
- printk(KERN_INFO "natsemi %s: silicon revision %#04x.\n",
- pci_name(np->pci_dev), np->srr);
-
- i = register_netdev(dev);
- if (i)
- goto err_register_netdev;
-
- if (NATSEMI_CREATE_FILE(pdev, dspcfg_workaround))
- goto err_create_file;
-
- if (netif_msg_drv(np)) {
- printk(KERN_INFO "natsemi %s: %s at %#08llx "
- "(%s), %pM, IRQ %d",
- dev->name, natsemi_pci_info[chip_idx].name,
- (unsigned long long)iostart, pci_name(np->pci_dev),
- dev->dev_addr, irq);
- if (dev->if_port == PORT_TP)
- printk(", port TP.\n");
- else if (np->ignore_phy)
- printk(", port MII, ignoring PHY\n");
- else
- printk(", port MII, phy ad %d.\n", np->phy_addr_external);
- }
- return 0;
-
- err_create_file:
- unregister_netdev(dev);
-
- err_register_netdev:
- iounmap(ioaddr);
-
- err_ioremap:
- pci_release_regions(pdev);
- pci_set_drvdata(pdev, NULL);
-
- err_pci_request_regions:
- free_netdev(dev);
- return i;
-}
-
-
-/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces.
- The EEPROM code is for the common 93c06/46 EEPROMs with 6 bit addresses. */
-
-/* Delay between EEPROM clock transitions.
- No extra delay is needed with 33Mhz PCI, but future 66Mhz access may need
- a delay. Note that pre-2.0.34 kernels had a cache-alignment bug that
- made udelay() unreliable.
- The old method of using an ISA access as a delay, __SLOW_DOWN_IO__, is
- deprecated.
-*/
-#define eeprom_delay(ee_addr) readl(ee_addr)
-
-#define EE_Write0 (EE_ChipSelect)
-#define EE_Write1 (EE_ChipSelect | EE_DataIn)
-
-/* The EEPROM commands include the alway-set leading bit. */
-enum EEPROM_Cmds {
- EE_WriteCmd=(5 << 6), EE_ReadCmd=(6 << 6), EE_EraseCmd=(7 << 6),
-};
-
-static int eeprom_read(void __iomem *addr, int location)
-{
- int i;
- int retval = 0;
- void __iomem *ee_addr = addr + EECtrl;
- int read_cmd = location | EE_ReadCmd;
-
- writel(EE_Write0, ee_addr);
-
- /* Shift the read command bits out. */
- for (i = 10; i >= 0; i--) {
- short dataval = (read_cmd & (1 << i)) ? EE_Write1 : EE_Write0;
- writel(dataval, ee_addr);
- eeprom_delay(ee_addr);
- writel(dataval | EE_ShiftClk, ee_addr);
- eeprom_delay(ee_addr);
- }
- writel(EE_ChipSelect, ee_addr);
- eeprom_delay(ee_addr);
-
- for (i = 0; i < 16; i++) {
- writel(EE_ChipSelect | EE_ShiftClk, ee_addr);
- eeprom_delay(ee_addr);
- retval |= (readl(ee_addr) & EE_DataOut) ? 1 << i : 0;
- writel(EE_ChipSelect, ee_addr);
- eeprom_delay(ee_addr);
- }
-
- /* Terminate the EEPROM access. */
- writel(EE_Write0, ee_addr);
- writel(0, ee_addr);
- return retval;
-}
-
-/* MII transceiver control section.
- * The 83815 series has an internal transceiver, and we present the
- * internal management registers as if they were MII connected.
- * External Phy registers are referenced through the MII interface.
- */
-
-/* clock transitions >= 20ns (25MHz)
- * One readl should be good to PCI @ 100MHz
- */
-#define mii_delay(ioaddr) readl(ioaddr + EECtrl)
-
-static int mii_getbit (struct net_device *dev)
-{
- int data;
- void __iomem *ioaddr = ns_ioaddr(dev);
-
- writel(MII_ShiftClk, ioaddr + EECtrl);
- data = readl(ioaddr + EECtrl);
- writel(0, ioaddr + EECtrl);
- mii_delay(ioaddr);
- return (data & MII_Data)? 1 : 0;
-}
-
-static void mii_send_bits (struct net_device *dev, u32 data, int len)
-{
- u32 i;
- void __iomem *ioaddr = ns_ioaddr(dev);
-
- for (i = (1 << (len-1)); i; i >>= 1)
- {
- u32 mdio_val = MII_Write | ((data & i)? MII_Data : 0);
- writel(mdio_val, ioaddr + EECtrl);
- mii_delay(ioaddr);
- writel(mdio_val | MII_ShiftClk, ioaddr + EECtrl);
- mii_delay(ioaddr);
- }
- writel(0, ioaddr + EECtrl);
- mii_delay(ioaddr);
-}
-
-static int miiport_read(struct net_device *dev, int phy_id, int reg)
-{
- u32 cmd;
- int i;
- u32 retval = 0;
-
- /* Ensure sync */
- mii_send_bits (dev, 0xffffffff, 32);
- /* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */
- /* ST,OP = 0110'b for read operation */
- cmd = (0x06 << 10) | (phy_id << 5) | reg;
- mii_send_bits (dev, cmd, 14);
- /* Turnaround */
- if (mii_getbit (dev))
- return 0;
- /* Read data */
- for (i = 0; i < 16; i++) {
- retval <<= 1;
- retval |= mii_getbit (dev);
- }
- /* End cycle */
- mii_getbit (dev);
- return retval;
-}
-
-static void miiport_write(struct net_device *dev, int phy_id, int reg, u16 data)
-{
- u32 cmd;
-
- /* Ensure sync */
- mii_send_bits (dev, 0xffffffff, 32);
- /* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */
- /* ST,OP,AAAAA,RRRRR,TA = 0101xxxxxxxxxx10'b = 0x5002 for write */
- cmd = (0x5002 << 16) | (phy_id << 23) | (reg << 18) | data;
- mii_send_bits (dev, cmd, 32);
- /* End cycle */
- mii_getbit (dev);
-}
-
-static int mdio_read(struct net_device *dev, int reg)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = ns_ioaddr(dev);
-
- /* The 83815 series has two ports:
- * - an internal transceiver
- * - an external mii bus
- */
- if (dev->if_port == PORT_TP)
- return readw(ioaddr+BasicControl+(reg<<2));
- else
- return miiport_read(dev, np->phy_addr_external, reg);
-}
-
-static void mdio_write(struct net_device *dev, int reg, u16 data)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = ns_ioaddr(dev);
-
- /* The 83815 series has an internal transceiver; handle separately */
- if (dev->if_port == PORT_TP)
- writew(data, ioaddr+BasicControl+(reg<<2));
- else
- miiport_write(dev, np->phy_addr_external, reg, data);
-}
-
-static void init_phy_fixup(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = ns_ioaddr(dev);
- int i;
- u32 cfg;
- u16 tmp;
-
- /* restore stuff lost when power was out */
- tmp = mdio_read(dev, MII_BMCR);
- if (np->autoneg == AUTONEG_ENABLE) {
- /* renegotiate if something changed */
- if ((tmp & BMCR_ANENABLE) == 0 ||
- np->advertising != mdio_read(dev, MII_ADVERTISE))
- {
- /* turn on autonegotiation and force negotiation */
- tmp |= (BMCR_ANENABLE | BMCR_ANRESTART);
- mdio_write(dev, MII_ADVERTISE, np->advertising);
- }
- } else {
- /* turn off auto negotiation, set speed and duplexity */
- tmp &= ~(BMCR_ANENABLE | BMCR_SPEED100 | BMCR_FULLDPLX);
- if (np->speed == SPEED_100)
- tmp |= BMCR_SPEED100;
- if (np->duplex == DUPLEX_FULL)
- tmp |= BMCR_FULLDPLX;
- /*
- * Note: there is no good way to inform the link partner
- * that our capabilities changed. The user has to unplug
- * and replug the network cable after some changes, e.g.
- * after switching from 10HD, autoneg off to 100 HD,
- * autoneg off.
- */
- }
- mdio_write(dev, MII_BMCR, tmp);
- readl(ioaddr + ChipConfig);
- udelay(1);
-
- /* find out what phy this is */
- np->mii = (mdio_read(dev, MII_PHYSID1) << 16)
- + mdio_read(dev, MII_PHYSID2);
-
- /* handle external phys here */
- switch (np->mii) {
- case PHYID_AM79C874:
- /* phy specific configuration for fibre/tp operation */
- tmp = mdio_read(dev, MII_MCTRL);
- tmp &= ~(MII_FX_SEL | MII_EN_SCRM);
- if (dev->if_port == PORT_FIBRE)
- tmp |= MII_FX_SEL;
- else
- tmp |= MII_EN_SCRM;
- mdio_write(dev, MII_MCTRL, tmp);
- break;
- default:
- break;
- }
- cfg = readl(ioaddr + ChipConfig);
- if (cfg & CfgExtPhy)
- return;
-
- /* On page 78 of the spec, they recommend some settings for "optimum
- performance" to be done in sequence. These settings optimize some
- of the 100Mbit autodetection circuitry. They say we only want to
- do this for rev C of the chip, but engineers at NSC (Bradley
- Kennedy) recommends always setting them. If you don't, you get
- errors on some autonegotiations that make the device unusable.
-
- It seems that the DSP needs a few usec to reinitialize after
- the start of the phy. Just retry writing these values until they
- stick.
- */
- for (i=0;i<NATSEMI_HW_TIMEOUT;i++) {
-
- int dspcfg;
- writew(1, ioaddr + PGSEL);
- writew(PMDCSR_VAL, ioaddr + PMDCSR);
- writew(TSTDAT_VAL, ioaddr + TSTDAT);
- np->dspcfg = (np->srr <= SRR_DP83815_C)?
- DSPCFG_VAL : (DSPCFG_COEF | readw(ioaddr + DSPCFG));
- writew(np->dspcfg, ioaddr + DSPCFG);
- writew(SDCFG_VAL, ioaddr + SDCFG);
- writew(0, ioaddr + PGSEL);
- readl(ioaddr + ChipConfig);
- udelay(10);
-
- writew(1, ioaddr + PGSEL);
- dspcfg = readw(ioaddr + DSPCFG);
- writew(0, ioaddr + PGSEL);
- if (np->dspcfg == dspcfg)
- break;
- }
-
- if (netif_msg_link(np)) {
- if (i==NATSEMI_HW_TIMEOUT) {
- printk(KERN_INFO
- "%s: DSPCFG mismatch after retrying for %d usec.\n",
- dev->name, i*10);
- } else {
- printk(KERN_INFO
- "%s: DSPCFG accepted after %d usec.\n",
- dev->name, i*10);
- }
- }
- /*
- * Enable PHY Specific event based interrupts. Link state change
- * and Auto-Negotiation Completion are among the affected.
- * Read the intr status to clear it (needed for wake events).
- */
- readw(ioaddr + MIntrStatus);
- writew(MICRIntEn, ioaddr + MIntrCtrl);
-}
-
-static int switch_port_external(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = ns_ioaddr(dev);
- u32 cfg;
-
- cfg = readl(ioaddr + ChipConfig);
- if (cfg & CfgExtPhy)
- return 0;
-
- if (netif_msg_link(np)) {
- printk(KERN_INFO "%s: switching to external transceiver.\n",
- dev->name);
- }
-
- /* 1) switch back to external phy */
- writel(cfg | (CfgExtPhy | CfgPhyDis), ioaddr + ChipConfig);
- readl(ioaddr + ChipConfig);
- udelay(1);
-
- /* 2) reset the external phy: */
- /* resetting the external PHY has been known to cause a hub supplying
- * power over Ethernet to kill the power. We don't want to kill
- * power to this computer, so we avoid resetting the phy.
- */
-
- /* 3) reinit the phy fixup, it got lost during power down. */
- move_int_phy(dev, np->phy_addr_external);
- init_phy_fixup(dev);
-
- return 1;
-}
-
-static int switch_port_internal(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = ns_ioaddr(dev);
- int i;
- u32 cfg;
- u16 bmcr;
-
- cfg = readl(ioaddr + ChipConfig);
- if (!(cfg &CfgExtPhy))
- return 0;
-
- if (netif_msg_link(np)) {
- printk(KERN_INFO "%s: switching to internal transceiver.\n",
- dev->name);
- }
- /* 1) switch back to internal phy: */
- cfg = cfg & ~(CfgExtPhy | CfgPhyDis);
- writel(cfg, ioaddr + ChipConfig);
- readl(ioaddr + ChipConfig);
- udelay(1);
-
- /* 2) reset the internal phy: */
- bmcr = readw(ioaddr+BasicControl+(MII_BMCR<<2));
- writel(bmcr | BMCR_RESET, ioaddr+BasicControl+(MII_BMCR<<2));
- readl(ioaddr + ChipConfig);
- udelay(10);
- for (i=0;i<NATSEMI_HW_TIMEOUT;i++) {
- bmcr = readw(ioaddr+BasicControl+(MII_BMCR<<2));
- if (!(bmcr & BMCR_RESET))
- break;
- udelay(10);
- }
- if (i==NATSEMI_HW_TIMEOUT && netif_msg_link(np)) {
- printk(KERN_INFO
- "%s: phy reset did not complete in %d usec.\n",
- dev->name, i*10);
- }
- /* 3) reinit the phy fixup, it got lost during power down. */
- init_phy_fixup(dev);
-
- return 1;
-}
-
-/* Scan for a PHY on the external mii bus.
- * There are two tricky points:
- * - Do not scan while the internal phy is enabled. The internal phy will
- * crash: e.g. reads from the DSPCFG register will return odd values and
- * the nasty random phy reset code will reset the nic every few seconds.
- * - The internal phy must be moved around, an external phy could
- * have the same address as the internal phy.
- */
-static int find_mii(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- int tmp;
- int i;
- int did_switch;
-
- /* Switch to external phy */
- did_switch = switch_port_external(dev);
-
- /* Scan the possible phy addresses:
- *
- * PHY address 0 means that the phy is in isolate mode. Not yet
- * supported due to lack of test hardware. User space should
- * handle it through ethtool.
- */
- for (i = 1; i <= 31; i++) {
- move_int_phy(dev, i);
- tmp = miiport_read(dev, i, MII_BMSR);
- if (tmp != 0xffff && tmp != 0x0000) {
- /* found something! */
- np->mii = (mdio_read(dev, MII_PHYSID1) << 16)
- + mdio_read(dev, MII_PHYSID2);
- if (netif_msg_probe(np)) {
- printk(KERN_INFO "natsemi %s: found external phy %08x at address %d.\n",
- pci_name(np->pci_dev), np->mii, i);
- }
- break;
- }
- }
- /* And switch back to internal phy: */
- if (did_switch)
- switch_port_internal(dev);
- return i;
-}
-
-/* CFG bits [13:16] [18:23] */
-#define CFG_RESET_SAVE 0xfde000
-/* WCSR bits [0:4] [9:10] */
-#define WCSR_RESET_SAVE 0x61f
-/* RFCR bits [20] [22] [27:31] */
-#define RFCR_RESET_SAVE 0xf8500000
-
-static void natsemi_reset(struct net_device *dev)
-{
- int i;
- u32 cfg;
- u32 wcsr;
- u32 rfcr;
- u16 pmatch[3];
- u16 sopass[3];
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = ns_ioaddr(dev);
-
- /*
- * Resetting the chip causes some registers to be lost.
- * Natsemi suggests NOT reloading the EEPROM while live, so instead
- * we save the state that would have been loaded from EEPROM
- * on a normal power-up (see the spec EEPROM map). This assumes
- * whoever calls this will follow up with init_registers() eventually.
- */
-
- /* CFG */
- cfg = readl(ioaddr + ChipConfig) & CFG_RESET_SAVE;
- /* WCSR */
- wcsr = readl(ioaddr + WOLCmd) & WCSR_RESET_SAVE;
- /* RFCR */
- rfcr = readl(ioaddr + RxFilterAddr) & RFCR_RESET_SAVE;
- /* PMATCH */
- for (i = 0; i < 3; i++) {
- writel(i*2, ioaddr + RxFilterAddr);
- pmatch[i] = readw(ioaddr + RxFilterData);
- }
- /* SOPAS */
- for (i = 0; i < 3; i++) {
- writel(0xa+(i*2), ioaddr + RxFilterAddr);
- sopass[i] = readw(ioaddr + RxFilterData);
- }
-
- /* now whack the chip */
- writel(ChipReset, ioaddr + ChipCmd);
- for (i=0;i<NATSEMI_HW_TIMEOUT;i++) {
- if (!(readl(ioaddr + ChipCmd) & ChipReset))
- break;
- udelay(5);
- }
- if (i==NATSEMI_HW_TIMEOUT) {
- printk(KERN_WARNING "%s: reset did not complete in %d usec.\n",
- dev->name, i*5);
- } else if (netif_msg_hw(np)) {
- printk(KERN_DEBUG "%s: reset completed in %d usec.\n",
- dev->name, i*5);
- }
-
- /* restore CFG */
- cfg |= readl(ioaddr + ChipConfig) & ~CFG_RESET_SAVE;
- /* turn on external phy if it was selected */
- if (dev->if_port == PORT_TP)
- cfg &= ~(CfgExtPhy | CfgPhyDis);
- else
- cfg |= (CfgExtPhy | CfgPhyDis);
- writel(cfg, ioaddr + ChipConfig);
- /* restore WCSR */
- wcsr |= readl(ioaddr + WOLCmd) & ~WCSR_RESET_SAVE;
- writel(wcsr, ioaddr + WOLCmd);
- /* read RFCR */
- rfcr |= readl(ioaddr + RxFilterAddr) & ~RFCR_RESET_SAVE;
- /* restore PMATCH */
- for (i = 0; i < 3; i++) {
- writel(i*2, ioaddr + RxFilterAddr);
- writew(pmatch[i], ioaddr + RxFilterData);
- }
- for (i = 0; i < 3; i++) {
- writel(0xa+(i*2), ioaddr + RxFilterAddr);
- writew(sopass[i], ioaddr + RxFilterData);
- }
- /* restore RFCR */
- writel(rfcr, ioaddr + RxFilterAddr);
-}
-
-static void reset_rx(struct net_device *dev)
-{
- int i;
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = ns_ioaddr(dev);
-
- np->intr_status &= ~RxResetDone;
-
- writel(RxReset, ioaddr + ChipCmd);
-
- for (i=0;i<NATSEMI_HW_TIMEOUT;i++) {
- np->intr_status |= readl(ioaddr + IntrStatus);
- if (np->intr_status & RxResetDone)
- break;
- udelay(15);
- }
- if (i==NATSEMI_HW_TIMEOUT) {
- printk(KERN_WARNING "%s: RX reset did not complete in %d usec.\n",
- dev->name, i*15);
- } else if (netif_msg_hw(np)) {
- printk(KERN_WARNING "%s: RX reset took %d usec.\n",
- dev->name, i*15);
- }
-}
-
-static void natsemi_reload_eeprom(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = ns_ioaddr(dev);
- int i;
-
- writel(EepromReload, ioaddr + PCIBusCfg);
- for (i=0;i<NATSEMI_HW_TIMEOUT;i++) {
- udelay(50);
- if (!(readl(ioaddr + PCIBusCfg) & EepromReload))
- break;
- }
- if (i==NATSEMI_HW_TIMEOUT) {
- printk(KERN_WARNING "natsemi %s: EEPROM did not reload in %d usec.\n",
- pci_name(np->pci_dev), i*50);
- } else if (netif_msg_hw(np)) {
- printk(KERN_DEBUG "natsemi %s: EEPROM reloaded in %d usec.\n",
- pci_name(np->pci_dev), i*50);
- }
-}
-
-static void natsemi_stop_rxtx(struct net_device *dev)
-{
- void __iomem * ioaddr = ns_ioaddr(dev);
- struct netdev_private *np = netdev_priv(dev);
- int i;
-
- writel(RxOff | TxOff, ioaddr + ChipCmd);
- for(i=0;i< NATSEMI_HW_TIMEOUT;i++) {
- if ((readl(ioaddr + ChipCmd) & (TxOn|RxOn)) == 0)
- break;
- udelay(5);
- }
- if (i==NATSEMI_HW_TIMEOUT) {
- printk(KERN_WARNING "%s: Tx/Rx process did not stop in %d usec.\n",
- dev->name, i*5);
- } else if (netif_msg_hw(np)) {
- printk(KERN_DEBUG "%s: Tx/Rx process stopped in %d usec.\n",
- dev->name, i*5);
- }
-}
-
-static int netdev_open(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
- int i;
-
- /* Reset the chip, just in case. */
- natsemi_reset(dev);
-
- i = request_irq(dev->irq, intr_handler, IRQF_SHARED, dev->name, dev);
- if (i) return i;
-
- if (netif_msg_ifup(np))
- printk(KERN_DEBUG "%s: netdev_open() irq %d.\n",
- dev->name, dev->irq);
- i = alloc_ring(dev);
- if (i < 0) {
- free_irq(dev->irq, dev);
- return i;
- }
- napi_enable(&np->napi);
-
- init_ring(dev);
- spin_lock_irq(&np->lock);
- init_registers(dev);
- /* now set the MAC address according to dev->dev_addr */
- for (i = 0; i < 3; i++) {
- u16 mac = (dev->dev_addr[2*i+1]<<8) + dev->dev_addr[2*i];
-
- writel(i*2, ioaddr + RxFilterAddr);
- writew(mac, ioaddr + RxFilterData);
- }
- writel(np->cur_rx_mode, ioaddr + RxFilterAddr);
- spin_unlock_irq(&np->lock);
-
- netif_start_queue(dev);
-
- if (netif_msg_ifup(np))
- printk(KERN_DEBUG "%s: Done netdev_open(), status: %#08x.\n",
- dev->name, (int)readl(ioaddr + ChipCmd));
-
- /* Set the timer to check for link beat. */
- init_timer(&np->timer);
- np->timer.expires = round_jiffies(jiffies + NATSEMI_TIMER_FREQ);
- np->timer.data = (unsigned long)dev;
- np->timer.function = netdev_timer; /* timer handler */
- add_timer(&np->timer);
-
- return 0;
-}
-
-static void do_cable_magic(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = ns_ioaddr(dev);
-
- if (dev->if_port != PORT_TP)
- return;
-
- if (np->srr >= SRR_DP83816_A5)
- return;
-
- /*
- * 100 MBit links with short cables can trip an issue with the chip.
- * The problem manifests as lots of CRC errors and/or flickering
- * activity LED while idle. This process is based on instructions
- * from engineers at National.
- */
- if (readl(ioaddr + ChipConfig) & CfgSpeed100) {
- u16 data;
-
- writew(1, ioaddr + PGSEL);
- /*
- * coefficient visibility should already be enabled via
- * DSPCFG | 0x1000
- */
- data = readw(ioaddr + TSTDAT) & 0xff;
- /*
- * the value must be negative, and within certain values
- * (these values all come from National)
- */
- if (!(data & 0x80) || ((data >= 0xd8) && (data <= 0xff))) {
- np = netdev_priv(dev);
-
- /* the bug has been triggered - fix the coefficient */
- writew(TSTDAT_FIXED, ioaddr + TSTDAT);
- /* lock the value */
- data = readw(ioaddr + DSPCFG);
- np->dspcfg = data | DSPCFG_LOCK;
- writew(np->dspcfg, ioaddr + DSPCFG);
- }
- writew(0, ioaddr + PGSEL);
- }
-}
-
-static void undo_cable_magic(struct net_device *dev)
-{
- u16 data;
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
-
- if (dev->if_port != PORT_TP)
- return;
-
- if (np->srr >= SRR_DP83816_A5)
- return;
-
- writew(1, ioaddr + PGSEL);
- /* make sure the lock bit is clear */
- data = readw(ioaddr + DSPCFG);
- np->dspcfg = data & ~DSPCFG_LOCK;
- writew(np->dspcfg, ioaddr + DSPCFG);
- writew(0, ioaddr + PGSEL);
-}
-
-static void check_link(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
- int duplex = np->duplex;
- u16 bmsr;
-
- /* If we are ignoring the PHY then don't try reading it. */
- if (np->ignore_phy)
- goto propagate_state;
-
- /* The link status field is latched: it remains low after a temporary
- * link failure until it's read. We need the current link status,
- * thus read twice.
- */
- mdio_read(dev, MII_BMSR);
- bmsr = mdio_read(dev, MII_BMSR);
-
- if (!(bmsr & BMSR_LSTATUS)) {
- if (netif_carrier_ok(dev)) {
- if (netif_msg_link(np))
- printk(KERN_NOTICE "%s: link down.\n",
- dev->name);
- netif_carrier_off(dev);
- undo_cable_magic(dev);
- }
- return;
- }
- if (!netif_carrier_ok(dev)) {
- if (netif_msg_link(np))
- printk(KERN_NOTICE "%s: link up.\n", dev->name);
- netif_carrier_on(dev);
- do_cable_magic(dev);
- }
-
- duplex = np->full_duplex;
- if (!duplex) {
- if (bmsr & BMSR_ANEGCOMPLETE) {
- int tmp = mii_nway_result(
- np->advertising & mdio_read(dev, MII_LPA));
- if (tmp == LPA_100FULL || tmp == LPA_10FULL)
- duplex = 1;
- } else if (mdio_read(dev, MII_BMCR) & BMCR_FULLDPLX)
- duplex = 1;
- }
-
-propagate_state:
- /* if duplex is set then bit 28 must be set, too */
- if (duplex ^ !!(np->rx_config & RxAcceptTx)) {
- if (netif_msg_link(np))
- printk(KERN_INFO
- "%s: Setting %s-duplex based on negotiated "
- "link capability.\n", dev->name,
- duplex ? "full" : "half");
- if (duplex) {
- np->rx_config |= RxAcceptTx;
- np->tx_config |= TxCarrierIgn | TxHeartIgn;
- } else {
- np->rx_config &= ~RxAcceptTx;
- np->tx_config &= ~(TxCarrierIgn | TxHeartIgn);
- }
- writel(np->tx_config, ioaddr + TxConfig);
- writel(np->rx_config, ioaddr + RxConfig);
- }
-}
-
-static void init_registers(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
-
- init_phy_fixup(dev);
-
- /* clear any interrupts that are pending, such as wake events */
- readl(ioaddr + IntrStatus);
-
- writel(np->ring_dma, ioaddr + RxRingPtr);
- writel(np->ring_dma + RX_RING_SIZE * sizeof(struct netdev_desc),
- ioaddr + TxRingPtr);
-
- /* Initialize other registers.
- * Configure the PCI bus bursts and FIFO thresholds.
- * Configure for standard, in-spec Ethernet.
- * Start with half-duplex. check_link will update
- * to the correct settings.
- */
-
- /* DRTH: 2: start tx if 64 bytes are in the fifo
- * FLTH: 0x10: refill with next packet if 512 bytes are free
- * MXDMA: 0: up to 256 byte bursts.
- * MXDMA must be <= FLTH
- * ECRETRY=1
- * ATP=1
- */
- np->tx_config = TxAutoPad | TxCollRetry | TxMxdma_256 |
- TX_FLTH_VAL | TX_DRTH_VAL_START;
- writel(np->tx_config, ioaddr + TxConfig);
-
- /* DRTH 0x10: start copying to memory if 128 bytes are in the fifo
- * MXDMA 0: up to 256 byte bursts
- */
- np->rx_config = RxMxdma_256 | RX_DRTH_VAL;
- /* if receive ring now has bigger buffers than normal, enable jumbo */
- if (np->rx_buf_sz > NATSEMI_LONGPKT)
- np->rx_config |= RxAcceptLong;
-
- writel(np->rx_config, ioaddr + RxConfig);
-
- /* Disable PME:
- * The PME bit is initialized from the EEPROM contents.
- * PCI cards probably have PME disabled, but motherboard
- * implementations may have PME set to enable WakeOnLan.
- * With PME set the chip will scan incoming packets but
- * nothing will be written to memory. */
- np->SavedClkRun = readl(ioaddr + ClkRun);
- writel(np->SavedClkRun & ~PMEEnable, ioaddr + ClkRun);
- if (np->SavedClkRun & PMEStatus && netif_msg_wol(np)) {
- printk(KERN_NOTICE "%s: Wake-up event %#08x\n",
- dev->name, readl(ioaddr + WOLCmd));
- }
-
- check_link(dev);
- __set_rx_mode(dev);
-
- /* Enable interrupts by setting the interrupt mask. */
- writel(DEFAULT_INTR, ioaddr + IntrMask);
- natsemi_irq_enable(dev);
-
- writel(RxOn | TxOn, ioaddr + ChipCmd);
- writel(StatsClear, ioaddr + StatsCtrl); /* Clear Stats */
-}
-
-/*
- * netdev_timer:
- * Purpose:
- * 1) check for link changes. Usually they are handled by the MII interrupt
- * but it doesn't hurt to check twice.
- * 2) check for sudden death of the NIC:
- * It seems that a reference set for this chip went out with incorrect info,
- * and there exist boards that aren't quite right. An unexpected voltage
- * drop can cause the PHY to get itself in a weird state (basically reset).
- * NOTE: this only seems to affect revC chips. The user can disable
- * this check via dspcfg_workaround sysfs option.
- * 3) check of death of the RX path due to OOM
- */
-static void netdev_timer(unsigned long data)
-{
- struct net_device *dev = (struct net_device *)data;
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
- int next_tick = NATSEMI_TIMER_FREQ;
-
- if (netif_msg_timer(np)) {
- /* DO NOT read the IntrStatus register,
- * a read clears any pending interrupts.
- */
- printk(KERN_DEBUG "%s: Media selection timer tick.\n",
- dev->name);
- }
-
- if (dev->if_port == PORT_TP) {
- u16 dspcfg;
-
- spin_lock_irq(&np->lock);
- /* check for a nasty random phy-reset - use dspcfg as a flag */
- writew(1, ioaddr+PGSEL);
- dspcfg = readw(ioaddr+DSPCFG);
- writew(0, ioaddr+PGSEL);
- if (np->dspcfg_workaround && dspcfg != np->dspcfg) {
- if (!netif_queue_stopped(dev)) {
- spin_unlock_irq(&np->lock);
- if (netif_msg_drv(np))
- printk(KERN_NOTICE "%s: possible phy reset: "
- "re-initializing\n", dev->name);
- disable_irq(dev->irq);
- spin_lock_irq(&np->lock);
- natsemi_stop_rxtx(dev);
- dump_ring(dev);
- reinit_ring(dev);
- init_registers(dev);
- spin_unlock_irq(&np->lock);
- enable_irq(dev->irq);
- } else {
- /* hurry back */
- next_tick = HZ;
- spin_unlock_irq(&np->lock);
- }
- } else {
- /* init_registers() calls check_link() for the above case */
- check_link(dev);
- spin_unlock_irq(&np->lock);
- }
- } else {
- spin_lock_irq(&np->lock);
- check_link(dev);
- spin_unlock_irq(&np->lock);
- }
- if (np->oom) {
- disable_irq(dev->irq);
- np->oom = 0;
- refill_rx(dev);
- enable_irq(dev->irq);
- if (!np->oom) {
- writel(RxOn, ioaddr + ChipCmd);
- } else {
- next_tick = 1;
- }
- }
-
- if (next_tick > 1)
- mod_timer(&np->timer, round_jiffies(jiffies + next_tick));
- else
- mod_timer(&np->timer, jiffies + next_tick);
-}
-
-static void dump_ring(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
-
- if (netif_msg_pktdata(np)) {
- int i;
- printk(KERN_DEBUG " Tx ring at %p:\n", np->tx_ring);
- for (i = 0; i < TX_RING_SIZE; i++) {
- printk(KERN_DEBUG " #%d desc. %#08x %#08x %#08x.\n",
- i, np->tx_ring[i].next_desc,
- np->tx_ring[i].cmd_status,
- np->tx_ring[i].addr);
- }
- printk(KERN_DEBUG " Rx ring %p:\n", np->rx_ring);
- for (i = 0; i < RX_RING_SIZE; i++) {
- printk(KERN_DEBUG " #%d desc. %#08x %#08x %#08x.\n",
- i, np->rx_ring[i].next_desc,
- np->rx_ring[i].cmd_status,
- np->rx_ring[i].addr);
- }
- }
-}
-
-static void ns_tx_timeout(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
-
- disable_irq(dev->irq);
- spin_lock_irq(&np->lock);
- if (!np->hands_off) {
- if (netif_msg_tx_err(np))
- printk(KERN_WARNING
- "%s: Transmit timed out, status %#08x,"
- " resetting...\n",
- dev->name, readl(ioaddr + IntrStatus));
- dump_ring(dev);
-
- natsemi_reset(dev);
- reinit_ring(dev);
- init_registers(dev);
- } else {
- printk(KERN_WARNING
- "%s: tx_timeout while in hands_off state?\n",
- dev->name);
- }
- spin_unlock_irq(&np->lock);
- enable_irq(dev->irq);
-
- dev->trans_start = jiffies; /* prevent tx timeout */
- dev->stats.tx_errors++;
- netif_wake_queue(dev);
-}
-
-static int alloc_ring(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- np->rx_ring = pci_alloc_consistent(np->pci_dev,
- sizeof(struct netdev_desc) * (RX_RING_SIZE+TX_RING_SIZE),
- &np->ring_dma);
- if (!np->rx_ring)
- return -ENOMEM;
- np->tx_ring = &np->rx_ring[RX_RING_SIZE];
- return 0;
-}
-
-static void refill_rx(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
-
- /* Refill the Rx ring buffers. */
- for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) {
- struct sk_buff *skb;
- int entry = np->dirty_rx % RX_RING_SIZE;
- if (np->rx_skbuff[entry] == NULL) {
- unsigned int buflen = np->rx_buf_sz+NATSEMI_PADDING;
- skb = dev_alloc_skb(buflen);
- np->rx_skbuff[entry] = skb;
- if (skb == NULL)
- break; /* Better luck next round. */
- skb->dev = dev; /* Mark as being used by this device. */
- np->rx_dma[entry] = pci_map_single(np->pci_dev,
- skb->data, buflen, PCI_DMA_FROMDEVICE);
- np->rx_ring[entry].addr = cpu_to_le32(np->rx_dma[entry]);
- }
- np->rx_ring[entry].cmd_status = cpu_to_le32(np->rx_buf_sz);
- }
- if (np->cur_rx - np->dirty_rx == RX_RING_SIZE) {
- if (netif_msg_rx_err(np))
- printk(KERN_WARNING "%s: going OOM.\n", dev->name);
- np->oom = 1;
- }
-}
-
-static void set_bufsize(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- if (dev->mtu <= ETH_DATA_LEN)
- np->rx_buf_sz = ETH_DATA_LEN + NATSEMI_HEADERS;
- else
- np->rx_buf_sz = dev->mtu + NATSEMI_HEADERS;
-}
-
-/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
-static void init_ring(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- int i;
-
- /* 1) TX ring */
- np->dirty_tx = np->cur_tx = 0;
- for (i = 0; i < TX_RING_SIZE; i++) {
- np->tx_skbuff[i] = NULL;
- np->tx_ring[i].next_desc = cpu_to_le32(np->ring_dma
- +sizeof(struct netdev_desc)
- *((i+1)%TX_RING_SIZE+RX_RING_SIZE));
- np->tx_ring[i].cmd_status = 0;
- }
-
- /* 2) RX ring */
- np->dirty_rx = 0;
- np->cur_rx = RX_RING_SIZE;
- np->oom = 0;
- set_bufsize(dev);
-
- np->rx_head_desc = &np->rx_ring[0];
-
- /* Please be careful before changing this loop - at least gcc-2.95.1
- * miscompiles it otherwise.
- */
- /* Initialize all Rx descriptors. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- np->rx_ring[i].next_desc = cpu_to_le32(np->ring_dma
- +sizeof(struct netdev_desc)
- *((i+1)%RX_RING_SIZE));
- np->rx_ring[i].cmd_status = cpu_to_le32(DescOwn);
- np->rx_skbuff[i] = NULL;
- }
- refill_rx(dev);
- dump_ring(dev);
-}
-
-static void drain_tx(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- int i;
-
- for (i = 0; i < TX_RING_SIZE; i++) {
- if (np->tx_skbuff[i]) {
- pci_unmap_single(np->pci_dev,
- np->tx_dma[i], np->tx_skbuff[i]->len,
- PCI_DMA_TODEVICE);
- dev_kfree_skb(np->tx_skbuff[i]);
- dev->stats.tx_dropped++;
- }
- np->tx_skbuff[i] = NULL;
- }
-}
-
-static void drain_rx(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- unsigned int buflen = np->rx_buf_sz;
- int i;
-
- /* Free all the skbuffs in the Rx queue. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- np->rx_ring[i].cmd_status = 0;
- np->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */
- if (np->rx_skbuff[i]) {
- pci_unmap_single(np->pci_dev, np->rx_dma[i],
- buflen + NATSEMI_PADDING,
- PCI_DMA_FROMDEVICE);
- dev_kfree_skb(np->rx_skbuff[i]);
- }
- np->rx_skbuff[i] = NULL;
- }
-}
-
-static void drain_ring(struct net_device *dev)
-{
- drain_rx(dev);
- drain_tx(dev);
-}
-
-static void free_ring(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- pci_free_consistent(np->pci_dev,
- sizeof(struct netdev_desc) * (RX_RING_SIZE+TX_RING_SIZE),
- np->rx_ring, np->ring_dma);
-}
-
-static void reinit_rx(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- int i;
-
- /* RX Ring */
- np->dirty_rx = 0;
- np->cur_rx = RX_RING_SIZE;
- np->rx_head_desc = &np->rx_ring[0];
- /* Initialize all Rx descriptors. */
- for (i = 0; i < RX_RING_SIZE; i++)
- np->rx_ring[i].cmd_status = cpu_to_le32(DescOwn);
-
- refill_rx(dev);
-}
-
-static void reinit_ring(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- int i;
-
- /* drain TX ring */
- drain_tx(dev);
- np->dirty_tx = np->cur_tx = 0;
- for (i=0;i<TX_RING_SIZE;i++)
- np->tx_ring[i].cmd_status = 0;
-
- reinit_rx(dev);
-}
-
-static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
- unsigned entry;
- unsigned long flags;
-
- /* Note: Ordering is important here, set the field with the
- "ownership" bit last, and only then increment cur_tx. */
-
- /* Calculate the next Tx descriptor entry. */
- entry = np->cur_tx % TX_RING_SIZE;
-
- np->tx_skbuff[entry] = skb;
- np->tx_dma[entry] = pci_map_single(np->pci_dev,
- skb->data,skb->len, PCI_DMA_TODEVICE);
-
- np->tx_ring[entry].addr = cpu_to_le32(np->tx_dma[entry]);
-
- spin_lock_irqsave(&np->lock, flags);
-
- if (!np->hands_off) {
- np->tx_ring[entry].cmd_status = cpu_to_le32(DescOwn | skb->len);
- /* StrongARM: Explicitly cache flush np->tx_ring and
- * skb->data,skb->len. */
- wmb();
- np->cur_tx++;
- if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1) {
- netdev_tx_done(dev);
- if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1)
- netif_stop_queue(dev);
- }
- /* Wake the potentially-idle transmit channel. */
- writel(TxOn, ioaddr + ChipCmd);
- } else {
- dev_kfree_skb_irq(skb);
- dev->stats.tx_dropped++;
- }
- spin_unlock_irqrestore(&np->lock, flags);
-
- if (netif_msg_tx_queued(np)) {
- printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n",
- dev->name, np->cur_tx, entry);
- }
- return NETDEV_TX_OK;
-}
-
-static void netdev_tx_done(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
-
- for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
- int entry = np->dirty_tx % TX_RING_SIZE;
- if (np->tx_ring[entry].cmd_status & cpu_to_le32(DescOwn))
- break;
- if (netif_msg_tx_done(np))
- printk(KERN_DEBUG
- "%s: tx frame #%d finished, status %#08x.\n",
- dev->name, np->dirty_tx,
- le32_to_cpu(np->tx_ring[entry].cmd_status));
- if (np->tx_ring[entry].cmd_status & cpu_to_le32(DescPktOK)) {
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += np->tx_skbuff[entry]->len;
- } else { /* Various Tx errors */
- int tx_status =
- le32_to_cpu(np->tx_ring[entry].cmd_status);
- if (tx_status & (DescTxAbort|DescTxExcColl))
- dev->stats.tx_aborted_errors++;
- if (tx_status & DescTxFIFO)
- dev->stats.tx_fifo_errors++;
- if (tx_status & DescTxCarrier)
- dev->stats.tx_carrier_errors++;
- if (tx_status & DescTxOOWCol)
- dev->stats.tx_window_errors++;
- dev->stats.tx_errors++;
- }
- pci_unmap_single(np->pci_dev,np->tx_dma[entry],
- np->tx_skbuff[entry]->len,
- PCI_DMA_TODEVICE);
- /* Free the original skb. */
- dev_kfree_skb_irq(np->tx_skbuff[entry]);
- np->tx_skbuff[entry] = NULL;
- }
- if (netif_queue_stopped(dev) &&
- np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) {
- /* The ring is no longer full, wake queue. */
- netif_wake_queue(dev);
- }
-}
-
-/* The interrupt handler doesn't actually handle interrupts itself, it
- * schedules a NAPI poll if there is anything to do. */
-static irqreturn_t intr_handler(int irq, void *dev_instance)
-{
- struct net_device *dev = dev_instance;
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
-
- /* Reading IntrStatus automatically acknowledges so don't do
- * that while interrupts are disabled, (for example, while a
- * poll is scheduled). */
- if (np->hands_off || !readl(ioaddr + IntrEnable))
- return IRQ_NONE;
-
- np->intr_status = readl(ioaddr + IntrStatus);
-
- if (!np->intr_status)
- return IRQ_NONE;
-
- if (netif_msg_intr(np))
- printk(KERN_DEBUG
- "%s: Interrupt, status %#08x, mask %#08x.\n",
- dev->name, np->intr_status,
- readl(ioaddr + IntrMask));
-
- prefetch(&np->rx_skbuff[np->cur_rx % RX_RING_SIZE]);
-
- if (napi_schedule_prep(&np->napi)) {
- /* Disable interrupts and register for poll */
- natsemi_irq_disable(dev);
- __napi_schedule(&np->napi);
- } else
- printk(KERN_WARNING
- "%s: Ignoring interrupt, status %#08x, mask %#08x.\n",
- dev->name, np->intr_status,
- readl(ioaddr + IntrMask));
-
- return IRQ_HANDLED;
-}
-
-/* This is the NAPI poll routine. As well as the standard RX handling
- * it also handles all other interrupts that the chip might raise.
- */
-static int natsemi_poll(struct napi_struct *napi, int budget)
-{
- struct netdev_private *np = container_of(napi, struct netdev_private, napi);
- struct net_device *dev = np->dev;
- void __iomem * ioaddr = ns_ioaddr(dev);
- int work_done = 0;
-
- do {
- if (netif_msg_intr(np))
- printk(KERN_DEBUG
- "%s: Poll, status %#08x, mask %#08x.\n",
- dev->name, np->intr_status,
- readl(ioaddr + IntrMask));
-
- /* netdev_rx() may read IntrStatus again if the RX state
- * machine falls over so do it first. */
- if (np->intr_status &
- (IntrRxDone | IntrRxIntr | RxStatusFIFOOver |
- IntrRxErr | IntrRxOverrun)) {
- netdev_rx(dev, &work_done, budget);
- }
-
- if (np->intr_status &
- (IntrTxDone | IntrTxIntr | IntrTxIdle | IntrTxErr)) {
- spin_lock(&np->lock);
- netdev_tx_done(dev);
- spin_unlock(&np->lock);
- }
-
- /* Abnormal error summary/uncommon events handlers. */
- if (np->intr_status & IntrAbnormalSummary)
- netdev_error(dev, np->intr_status);
-
- if (work_done >= budget)
- return work_done;
-
- np->intr_status = readl(ioaddr + IntrStatus);
- } while (np->intr_status);
-
- napi_complete(napi);
-
- /* Reenable interrupts providing nothing is trying to shut
- * the chip down. */
- spin_lock(&np->lock);
- if (!np->hands_off)
- natsemi_irq_enable(dev);
- spin_unlock(&np->lock);
-
- return work_done;
-}
-
-/* This routine is logically part of the interrupt handler, but separated
- for clarity and better register allocation. */
-static void netdev_rx(struct net_device *dev, int *work_done, int work_to_do)
-{
- struct netdev_private *np = netdev_priv(dev);
- int entry = np->cur_rx % RX_RING_SIZE;
- int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx;
- s32 desc_status = le32_to_cpu(np->rx_head_desc->cmd_status);
- unsigned int buflen = np->rx_buf_sz;
- void __iomem * ioaddr = ns_ioaddr(dev);
-
- /* If the driver owns the next entry it's a new packet. Send it up. */
- while (desc_status < 0) { /* e.g. & DescOwn */
- int pkt_len;
- if (netif_msg_rx_status(np))
- printk(KERN_DEBUG
- " netdev_rx() entry %d status was %#08x.\n",
- entry, desc_status);
- if (--boguscnt < 0)
- break;
-
- if (*work_done >= work_to_do)
- break;
-
- (*work_done)++;
-
- pkt_len = (desc_status & DescSizeMask) - 4;
- if ((desc_status&(DescMore|DescPktOK|DescRxLong)) != DescPktOK){
- if (desc_status & DescMore) {
- unsigned long flags;
-
- if (netif_msg_rx_err(np))
- printk(KERN_WARNING
- "%s: Oversized(?) Ethernet "
- "frame spanned multiple "
- "buffers, entry %#08x "
- "status %#08x.\n", dev->name,
- np->cur_rx, desc_status);
- dev->stats.rx_length_errors++;
-
- /* The RX state machine has probably
- * locked up beneath us. Follow the
- * reset procedure documented in
- * AN-1287. */
-
- spin_lock_irqsave(&np->lock, flags);
- reset_rx(dev);
- reinit_rx(dev);
- writel(np->ring_dma, ioaddr + RxRingPtr);
- check_link(dev);
- spin_unlock_irqrestore(&np->lock, flags);
-
- /* We'll enable RX on exit from this
- * function. */
- break;
-
- } else {
- /* There was an error. */
- dev->stats.rx_errors++;
- if (desc_status & (DescRxAbort|DescRxOver))
- dev->stats.rx_over_errors++;
- if (desc_status & (DescRxLong|DescRxRunt))
- dev->stats.rx_length_errors++;
- if (desc_status & (DescRxInvalid|DescRxAlign))
- dev->stats.rx_frame_errors++;
- if (desc_status & DescRxCRC)
- dev->stats.rx_crc_errors++;
- }
- } else if (pkt_len > np->rx_buf_sz) {
- /* if this is the tail of a double buffer
- * packet, we've already counted the error
- * on the first part. Ignore the second half.
- */
- } else {
- struct sk_buff *skb;
- /* Omit CRC size. */
- /* Check if the packet is long enough to accept
- * without copying to a minimally-sized skbuff. */
- if (pkt_len < rx_copybreak &&
- (skb = dev_alloc_skb(pkt_len + RX_OFFSET)) != NULL) {
- /* 16 byte align the IP header */
- skb_reserve(skb, RX_OFFSET);
- pci_dma_sync_single_for_cpu(np->pci_dev,
- np->rx_dma[entry],
- buflen,
- PCI_DMA_FROMDEVICE);
- skb_copy_to_linear_data(skb,
- np->rx_skbuff[entry]->data, pkt_len);
- skb_put(skb, pkt_len);
- pci_dma_sync_single_for_device(np->pci_dev,
- np->rx_dma[entry],
- buflen,
- PCI_DMA_FROMDEVICE);
- } else {
- pci_unmap_single(np->pci_dev, np->rx_dma[entry],
- buflen + NATSEMI_PADDING,
- PCI_DMA_FROMDEVICE);
- skb_put(skb = np->rx_skbuff[entry], pkt_len);
- np->rx_skbuff[entry] = NULL;
- }
- skb->protocol = eth_type_trans(skb, dev);
- netif_receive_skb(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += pkt_len;
- }
- entry = (++np->cur_rx) % RX_RING_SIZE;
- np->rx_head_desc = &np->rx_ring[entry];
- desc_status = le32_to_cpu(np->rx_head_desc->cmd_status);
- }
- refill_rx(dev);
-
- /* Restart Rx engine if stopped. */
- if (np->oom)
- mod_timer(&np->timer, jiffies + 1);
- else
- writel(RxOn, ioaddr + ChipCmd);
-}
-
-static void netdev_error(struct net_device *dev, int intr_status)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
-
- spin_lock(&np->lock);
- if (intr_status & LinkChange) {
- u16 lpa = mdio_read(dev, MII_LPA);
- if (mdio_read(dev, MII_BMCR) & BMCR_ANENABLE &&
- netif_msg_link(np)) {
- printk(KERN_INFO
- "%s: Autonegotiation advertising"
- " %#04x partner %#04x.\n", dev->name,
- np->advertising, lpa);
- }
-
- /* read MII int status to clear the flag */
- readw(ioaddr + MIntrStatus);
- check_link(dev);
- }
- if (intr_status & StatsMax) {
- __get_stats(dev);
- }
- if (intr_status & IntrTxUnderrun) {
- if ((np->tx_config & TxDrthMask) < TX_DRTH_VAL_LIMIT) {
- np->tx_config += TX_DRTH_VAL_INC;
- if (netif_msg_tx_err(np))
- printk(KERN_NOTICE
- "%s: increased tx threshold, txcfg %#08x.\n",
- dev->name, np->tx_config);
- } else {
- if (netif_msg_tx_err(np))
- printk(KERN_NOTICE
- "%s: tx underrun with maximum tx threshold, txcfg %#08x.\n",
- dev->name, np->tx_config);
- }
- writel(np->tx_config, ioaddr + TxConfig);
- }
- if (intr_status & WOLPkt && netif_msg_wol(np)) {
- int wol_status = readl(ioaddr + WOLCmd);
- printk(KERN_NOTICE "%s: Link wake-up event %#08x\n",
- dev->name, wol_status);
- }
- if (intr_status & RxStatusFIFOOver) {
- if (netif_msg_rx_err(np) && netif_msg_intr(np)) {
- printk(KERN_NOTICE "%s: Rx status FIFO overrun\n",
- dev->name);
- }
- dev->stats.rx_fifo_errors++;
- dev->stats.rx_errors++;
- }
- /* Hmmmmm, it's not clear how to recover from PCI faults. */
- if (intr_status & IntrPCIErr) {
- printk(KERN_NOTICE "%s: PCI error %#08x\n", dev->name,
- intr_status & IntrPCIErr);
- dev->stats.tx_fifo_errors++;
- dev->stats.tx_errors++;
- dev->stats.rx_fifo_errors++;
- dev->stats.rx_errors++;
- }
- spin_unlock(&np->lock);
-}
-
-static void __get_stats(struct net_device *dev)
-{
- void __iomem * ioaddr = ns_ioaddr(dev);
-
- /* The chip only need report frame silently dropped. */
- dev->stats.rx_crc_errors += readl(ioaddr + RxCRCErrs);
- dev->stats.rx_missed_errors += readl(ioaddr + RxMissed);
-}
-
-static struct net_device_stats *get_stats(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
-
- /* The chip only need report frame silently dropped. */
- spin_lock_irq(&np->lock);
- if (netif_running(dev) && !np->hands_off)
- __get_stats(dev);
- spin_unlock_irq(&np->lock);
-
- return &dev->stats;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void natsemi_poll_controller(struct net_device *dev)
-{
- disable_irq(dev->irq);
- intr_handler(dev->irq, dev);
- enable_irq(dev->irq);
-}
-#endif
-
-#define HASH_TABLE 0x200
-static void __set_rx_mode(struct net_device *dev)
-{
- void __iomem * ioaddr = ns_ioaddr(dev);
- struct netdev_private *np = netdev_priv(dev);
- u8 mc_filter[64]; /* Multicast hash filter */
- u32 rx_mode;
-
- if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
- rx_mode = RxFilterEnable | AcceptBroadcast
- | AcceptAllMulticast | AcceptAllPhys | AcceptMyPhys;
- } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
- (dev->flags & IFF_ALLMULTI)) {
- rx_mode = RxFilterEnable | AcceptBroadcast
- | AcceptAllMulticast | AcceptMyPhys;
- } else {
- struct netdev_hw_addr *ha;
- int i;
-
- memset(mc_filter, 0, sizeof(mc_filter));
- netdev_for_each_mc_addr(ha, dev) {
- int b = (ether_crc(ETH_ALEN, ha->addr) >> 23) & 0x1ff;
- mc_filter[b/8] |= (1 << (b & 0x07));
- }
- rx_mode = RxFilterEnable | AcceptBroadcast
- | AcceptMulticast | AcceptMyPhys;
- for (i = 0; i < 64; i += 2) {
- writel(HASH_TABLE + i, ioaddr + RxFilterAddr);
- writel((mc_filter[i + 1] << 8) + mc_filter[i],
- ioaddr + RxFilterData);
- }
- }
- writel(rx_mode, ioaddr + RxFilterAddr);
- np->cur_rx_mode = rx_mode;
-}
-
-static int natsemi_change_mtu(struct net_device *dev, int new_mtu)
-{
- if (new_mtu < 64 || new_mtu > NATSEMI_RX_LIMIT-NATSEMI_HEADERS)
- return -EINVAL;
-
- dev->mtu = new_mtu;
-
- /* synchronized against open : rtnl_lock() held by caller */
- if (netif_running(dev)) {
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
-
- disable_irq(dev->irq);
- spin_lock(&np->lock);
- /* stop engines */
- natsemi_stop_rxtx(dev);
- /* drain rx queue */
- drain_rx(dev);
- /* change buffers */
- set_bufsize(dev);
- reinit_rx(dev);
- writel(np->ring_dma, ioaddr + RxRingPtr);
- /* restart engines */
- writel(RxOn | TxOn, ioaddr + ChipCmd);
- spin_unlock(&np->lock);
- enable_irq(dev->irq);
- }
- return 0;
-}
-
-static void set_rx_mode(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- spin_lock_irq(&np->lock);
- if (!np->hands_off)
- __set_rx_mode(dev);
- spin_unlock_irq(&np->lock);
-}
-
-static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
-{
- struct netdev_private *np = netdev_priv(dev);
- strncpy(info->driver, DRV_NAME, ETHTOOL_BUSINFO_LEN);
- strncpy(info->version, DRV_VERSION, ETHTOOL_BUSINFO_LEN);
- strncpy(info->bus_info, pci_name(np->pci_dev), ETHTOOL_BUSINFO_LEN);
-}
-
-static int get_regs_len(struct net_device *dev)
-{
- return NATSEMI_REGS_SIZE;
-}
-
-static int get_eeprom_len(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- return np->eeprom_size;
-}
-
-static int get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
-{
- struct netdev_private *np = netdev_priv(dev);
- spin_lock_irq(&np->lock);
- netdev_get_ecmd(dev, ecmd);
- spin_unlock_irq(&np->lock);
- return 0;
-}
-
-static int set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
-{
- struct netdev_private *np = netdev_priv(dev);
- int res;
- spin_lock_irq(&np->lock);
- res = netdev_set_ecmd(dev, ecmd);
- spin_unlock_irq(&np->lock);
- return res;
-}
-
-static void get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
-{
- struct netdev_private *np = netdev_priv(dev);
- spin_lock_irq(&np->lock);
- netdev_get_wol(dev, &wol->supported, &wol->wolopts);
- netdev_get_sopass(dev, wol->sopass);
- spin_unlock_irq(&np->lock);
-}
-
-static int set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
-{
- struct netdev_private *np = netdev_priv(dev);
- int res;
- spin_lock_irq(&np->lock);
- netdev_set_wol(dev, wol->wolopts);
- res = netdev_set_sopass(dev, wol->sopass);
- spin_unlock_irq(&np->lock);
- return res;
-}
-
-static void get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
-{
- struct netdev_private *np = netdev_priv(dev);
- regs->version = NATSEMI_REGS_VER;
- spin_lock_irq(&np->lock);
- netdev_get_regs(dev, buf);
- spin_unlock_irq(&np->lock);
-}
-
-static u32 get_msglevel(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- return np->msg_enable;
-}
-
-static void set_msglevel(struct net_device *dev, u32 val)
-{
- struct netdev_private *np = netdev_priv(dev);
- np->msg_enable = val;
-}
-
-static int nway_reset(struct net_device *dev)
-{
- int tmp;
- int r = -EINVAL;
- /* if autoneg is off, it's an error */
- tmp = mdio_read(dev, MII_BMCR);
- if (tmp & BMCR_ANENABLE) {
- tmp |= (BMCR_ANRESTART);
- mdio_write(dev, MII_BMCR, tmp);
- r = 0;
- }
- return r;
-}
-
-static u32 get_link(struct net_device *dev)
-{
- /* LSTATUS is latched low until a read - so read twice */
- mdio_read(dev, MII_BMSR);
- return (mdio_read(dev, MII_BMSR)&BMSR_LSTATUS) ? 1:0;
-}
-
-static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data)
-{
- struct netdev_private *np = netdev_priv(dev);
- u8 *eebuf;
- int res;
-
- eebuf = kmalloc(np->eeprom_size, GFP_KERNEL);
- if (!eebuf)
- return -ENOMEM;
-
- eeprom->magic = PCI_VENDOR_ID_NS | (PCI_DEVICE_ID_NS_83815<<16);
- spin_lock_irq(&np->lock);
- res = netdev_get_eeprom(dev, eebuf);
- spin_unlock_irq(&np->lock);
- if (!res)
- memcpy(data, eebuf+eeprom->offset, eeprom->len);
- kfree(eebuf);
- return res;
-}
-
-static const struct ethtool_ops ethtool_ops = {
- .get_drvinfo = get_drvinfo,
- .get_regs_len = get_regs_len,
- .get_eeprom_len = get_eeprom_len,
- .get_settings = get_settings,
- .set_settings = set_settings,
- .get_wol = get_wol,
- .set_wol = set_wol,
- .get_regs = get_regs,
- .get_msglevel = get_msglevel,
- .set_msglevel = set_msglevel,
- .nway_reset = nway_reset,
- .get_link = get_link,
- .get_eeprom = get_eeprom,
-};
-
-static int netdev_set_wol(struct net_device *dev, u32 newval)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
- u32 data = readl(ioaddr + WOLCmd) & ~WakeOptsSummary;
-
- /* translate to bitmasks this chip understands */
- if (newval & WAKE_PHY)
- data |= WakePhy;
- if (newval & WAKE_UCAST)
- data |= WakeUnicast;
- if (newval & WAKE_MCAST)
- data |= WakeMulticast;
- if (newval & WAKE_BCAST)
- data |= WakeBroadcast;
- if (newval & WAKE_ARP)
- data |= WakeArp;
- if (newval & WAKE_MAGIC)
- data |= WakeMagic;
- if (np->srr >= SRR_DP83815_D) {
- if (newval & WAKE_MAGICSECURE) {
- data |= WakeMagicSecure;
- }
- }
-
- writel(data, ioaddr + WOLCmd);
-
- return 0;
-}
-
-static int netdev_get_wol(struct net_device *dev, u32 *supported, u32 *cur)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
- u32 regval = readl(ioaddr + WOLCmd);
-
- *supported = (WAKE_PHY | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST
- | WAKE_ARP | WAKE_MAGIC);
-
- if (np->srr >= SRR_DP83815_D) {
- /* SOPASS works on revD and higher */
- *supported |= WAKE_MAGICSECURE;
- }
- *cur = 0;
-
- /* translate from chip bitmasks */
- if (regval & WakePhy)
- *cur |= WAKE_PHY;
- if (regval & WakeUnicast)
- *cur |= WAKE_UCAST;
- if (regval & WakeMulticast)
- *cur |= WAKE_MCAST;
- if (regval & WakeBroadcast)
- *cur |= WAKE_BCAST;
- if (regval & WakeArp)
- *cur |= WAKE_ARP;
- if (regval & WakeMagic)
- *cur |= WAKE_MAGIC;
- if (regval & WakeMagicSecure) {
- /* this can be on in revC, but it's broken */
- *cur |= WAKE_MAGICSECURE;
- }
-
- return 0;
-}
-
-static int netdev_set_sopass(struct net_device *dev, u8 *newval)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
- u16 *sval = (u16 *)newval;
- u32 addr;
-
- if (np->srr < SRR_DP83815_D) {
- return 0;
- }
-
- /* enable writing to these registers by disabling the RX filter */
- addr = readl(ioaddr + RxFilterAddr) & ~RFCRAddressMask;
- addr &= ~RxFilterEnable;
- writel(addr, ioaddr + RxFilterAddr);
-
- /* write the three words to (undocumented) RFCR vals 0xa, 0xc, 0xe */
- writel(addr | 0xa, ioaddr + RxFilterAddr);
- writew(sval[0], ioaddr + RxFilterData);
-
- writel(addr | 0xc, ioaddr + RxFilterAddr);
- writew(sval[1], ioaddr + RxFilterData);
-
- writel(addr | 0xe, ioaddr + RxFilterAddr);
- writew(sval[2], ioaddr + RxFilterData);
-
- /* re-enable the RX filter */
- writel(addr | RxFilterEnable, ioaddr + RxFilterAddr);
-
- return 0;
-}
-
-static int netdev_get_sopass(struct net_device *dev, u8 *data)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
- u16 *sval = (u16 *)data;
- u32 addr;
-
- if (np->srr < SRR_DP83815_D) {
- sval[0] = sval[1] = sval[2] = 0;
- return 0;
- }
-
- /* read the three words from (undocumented) RFCR vals 0xa, 0xc, 0xe */
- addr = readl(ioaddr + RxFilterAddr) & ~RFCRAddressMask;
-
- writel(addr | 0xa, ioaddr + RxFilterAddr);
- sval[0] = readw(ioaddr + RxFilterData);
-
- writel(addr | 0xc, ioaddr + RxFilterAddr);
- sval[1] = readw(ioaddr + RxFilterData);
-
- writel(addr | 0xe, ioaddr + RxFilterAddr);
- sval[2] = readw(ioaddr + RxFilterData);
-
- writel(addr, ioaddr + RxFilterAddr);
-
- return 0;
-}
-
-static int netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
-{
- struct netdev_private *np = netdev_priv(dev);
- u32 tmp;
-
- ecmd->port = dev->if_port;
- ethtool_cmd_speed_set(ecmd, np->speed);
- ecmd->duplex = np->duplex;
- ecmd->autoneg = np->autoneg;
- ecmd->advertising = 0;
- if (np->advertising & ADVERTISE_10HALF)
- ecmd->advertising |= ADVERTISED_10baseT_Half;
- if (np->advertising & ADVERTISE_10FULL)
- ecmd->advertising |= ADVERTISED_10baseT_Full;
- if (np->advertising & ADVERTISE_100HALF)
- ecmd->advertising |= ADVERTISED_100baseT_Half;
- if (np->advertising & ADVERTISE_100FULL)
- ecmd->advertising |= ADVERTISED_100baseT_Full;
- ecmd->supported = (SUPPORTED_Autoneg |
- SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
- SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
- SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_FIBRE);
- ecmd->phy_address = np->phy_addr_external;
- /*
- * We intentionally report the phy address of the external
- * phy, even if the internal phy is used. This is necessary
- * to work around a deficiency of the ethtool interface:
- * It's only possible to query the settings of the active
- * port. Therefore
- * # ethtool -s ethX port mii
- * actually sends an ioctl to switch to port mii with the
- * settings that are used for the current active port.
- * If we would report a different phy address in this
- * command, then
- * # ethtool -s ethX port tp;ethtool -s ethX port mii
- * would unintentionally change the phy address.
- *
- * Fortunately the phy address doesn't matter with the
- * internal phy...
- */
-
- /* set information based on active port type */
- switch (ecmd->port) {
- default:
- case PORT_TP:
- ecmd->advertising |= ADVERTISED_TP;
- ecmd->transceiver = XCVR_INTERNAL;
- break;
- case PORT_MII:
- ecmd->advertising |= ADVERTISED_MII;
- ecmd->transceiver = XCVR_EXTERNAL;
- break;
- case PORT_FIBRE:
- ecmd->advertising |= ADVERTISED_FIBRE;
- ecmd->transceiver = XCVR_EXTERNAL;
- break;
- }
-
- /* if autonegotiation is on, try to return the active speed/duplex */
- if (ecmd->autoneg == AUTONEG_ENABLE) {
- ecmd->advertising |= ADVERTISED_Autoneg;
- tmp = mii_nway_result(
- np->advertising & mdio_read(dev, MII_LPA));
- if (tmp == LPA_100FULL || tmp == LPA_100HALF)
- ethtool_cmd_speed_set(ecmd, SPEED_100);
- else
- ethtool_cmd_speed_set(ecmd, SPEED_10);
- if (tmp == LPA_100FULL || tmp == LPA_10FULL)
- ecmd->duplex = DUPLEX_FULL;
- else
- ecmd->duplex = DUPLEX_HALF;
- }
-
- /* ignore maxtxpkt, maxrxpkt for now */
-
- return 0;
-}
-
-static int netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
-{
- struct netdev_private *np = netdev_priv(dev);
-
- if (ecmd->port != PORT_TP && ecmd->port != PORT_MII && ecmd->port != PORT_FIBRE)
- return -EINVAL;
- if (ecmd->transceiver != XCVR_INTERNAL && ecmd->transceiver != XCVR_EXTERNAL)
- return -EINVAL;
- if (ecmd->autoneg == AUTONEG_ENABLE) {
- if ((ecmd->advertising & (ADVERTISED_10baseT_Half |
- ADVERTISED_10baseT_Full |
- ADVERTISED_100baseT_Half |
- ADVERTISED_100baseT_Full)) == 0) {
- return -EINVAL;
- }
- } else if (ecmd->autoneg == AUTONEG_DISABLE) {
- u32 speed = ethtool_cmd_speed(ecmd);
- if (speed != SPEED_10 && speed != SPEED_100)
- return -EINVAL;
- if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
- return -EINVAL;
- } else {
- return -EINVAL;
- }
-
- /*
- * If we're ignoring the PHY then autoneg and the internal
- * transceiver are really not going to work so don't let the
- * user select them.
- */
- if (np->ignore_phy && (ecmd->autoneg == AUTONEG_ENABLE ||
- ecmd->port == PORT_TP))
- return -EINVAL;
-
- /*
- * maxtxpkt, maxrxpkt: ignored for now.
- *
- * transceiver:
- * PORT_TP is always XCVR_INTERNAL, PORT_MII and PORT_FIBRE are always
- * XCVR_EXTERNAL. The implementation thus ignores ecmd->transceiver and
- * selects based on ecmd->port.
- *
- * Actually PORT_FIBRE is nearly identical to PORT_MII: it's for fibre
- * phys that are connected to the mii bus. It's used to apply fibre
- * specific updates.
- */
-
- /* WHEW! now lets bang some bits */
-
- /* save the parms */
- dev->if_port = ecmd->port;
- np->autoneg = ecmd->autoneg;
- np->phy_addr_external = ecmd->phy_address & PhyAddrMask;
- if (np->autoneg == AUTONEG_ENABLE) {
- /* advertise only what has been requested */
- np->advertising &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
- if (ecmd->advertising & ADVERTISED_10baseT_Half)
- np->advertising |= ADVERTISE_10HALF;
- if (ecmd->advertising & ADVERTISED_10baseT_Full)
- np->advertising |= ADVERTISE_10FULL;
- if (ecmd->advertising & ADVERTISED_100baseT_Half)
- np->advertising |= ADVERTISE_100HALF;
- if (ecmd->advertising & ADVERTISED_100baseT_Full)
- np->advertising |= ADVERTISE_100FULL;
- } else {
- np->speed = ethtool_cmd_speed(ecmd);
- np->duplex = ecmd->duplex;
- /* user overriding the initial full duplex parm? */
- if (np->duplex == DUPLEX_HALF)
- np->full_duplex = 0;
- }
-
- /* get the right phy enabled */
- if (ecmd->port == PORT_TP)
- switch_port_internal(dev);
- else
- switch_port_external(dev);
-
- /* set parms and see how this affected our link status */
- init_phy_fixup(dev);
- check_link(dev);
- return 0;
-}
-
-static int netdev_get_regs(struct net_device *dev, u8 *buf)
-{
- int i;
- int j;
- u32 rfcr;
- u32 *rbuf = (u32 *)buf;
- void __iomem * ioaddr = ns_ioaddr(dev);
-
- /* read non-mii page 0 of registers */
- for (i = 0; i < NATSEMI_PG0_NREGS/2; i++) {
- rbuf[i] = readl(ioaddr + i*4);
- }
-
- /* read current mii registers */
- for (i = NATSEMI_PG0_NREGS/2; i < NATSEMI_PG0_NREGS; i++)
- rbuf[i] = mdio_read(dev, i & 0x1f);
-
- /* read only the 'magic' registers from page 1 */
- writew(1, ioaddr + PGSEL);
- rbuf[i++] = readw(ioaddr + PMDCSR);
- rbuf[i++] = readw(ioaddr + TSTDAT);
- rbuf[i++] = readw(ioaddr + DSPCFG);
- rbuf[i++] = readw(ioaddr + SDCFG);
- writew(0, ioaddr + PGSEL);
-
- /* read RFCR indexed registers */
- rfcr = readl(ioaddr + RxFilterAddr);
- for (j = 0; j < NATSEMI_RFDR_NREGS; j++) {
- writel(j*2, ioaddr + RxFilterAddr);
- rbuf[i++] = readw(ioaddr + RxFilterData);
- }
- writel(rfcr, ioaddr + RxFilterAddr);
-
- /* the interrupt status is clear-on-read - see if we missed any */
- if (rbuf[4] & rbuf[5]) {
- printk(KERN_WARNING
- "%s: shoot, we dropped an interrupt (%#08x)\n",
- dev->name, rbuf[4] & rbuf[5]);
- }
-
- return 0;
-}
-
-#define SWAP_BITS(x) ( (((x) & 0x0001) << 15) | (((x) & 0x0002) << 13) \
- | (((x) & 0x0004) << 11) | (((x) & 0x0008) << 9) \
- | (((x) & 0x0010) << 7) | (((x) & 0x0020) << 5) \
- | (((x) & 0x0040) << 3) | (((x) & 0x0080) << 1) \
- | (((x) & 0x0100) >> 1) | (((x) & 0x0200) >> 3) \
- | (((x) & 0x0400) >> 5) | (((x) & 0x0800) >> 7) \
- | (((x) & 0x1000) >> 9) | (((x) & 0x2000) >> 11) \
- | (((x) & 0x4000) >> 13) | (((x) & 0x8000) >> 15) )
-
-static int netdev_get_eeprom(struct net_device *dev, u8 *buf)
-{
- int i;
- u16 *ebuf = (u16 *)buf;
- void __iomem * ioaddr = ns_ioaddr(dev);
- struct netdev_private *np = netdev_priv(dev);
-
- /* eeprom_read reads 16 bits, and indexes by 16 bits */
- for (i = 0; i < np->eeprom_size/2; i++) {
- ebuf[i] = eeprom_read(ioaddr, i);
- /* The EEPROM itself stores data bit-swapped, but eeprom_read
- * reads it back "sanely". So we swap it back here in order to
- * present it to userland as it is stored. */
- ebuf[i] = SWAP_BITS(ebuf[i]);
- }
- return 0;
-}
-
-static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
- struct mii_ioctl_data *data = if_mii(rq);
- struct netdev_private *np = netdev_priv(dev);
-
- switch(cmd) {
- case SIOCGMIIPHY: /* Get address of MII PHY in use. */
- data->phy_id = np->phy_addr_external;
- /* Fall Through */
-
- case SIOCGMIIREG: /* Read MII PHY register. */
- /* The phy_id is not enough to uniquely identify
- * the intended target. Therefore the command is sent to
- * the given mii on the current port.
- */
- if (dev->if_port == PORT_TP) {
- if ((data->phy_id & 0x1f) == np->phy_addr_external)
- data->val_out = mdio_read(dev,
- data->reg_num & 0x1f);
- else
- data->val_out = 0;
- } else {
- move_int_phy(dev, data->phy_id & 0x1f);
- data->val_out = miiport_read(dev, data->phy_id & 0x1f,
- data->reg_num & 0x1f);
- }
- return 0;
-
- case SIOCSMIIREG: /* Write MII PHY register. */
- if (dev->if_port == PORT_TP) {
- if ((data->phy_id & 0x1f) == np->phy_addr_external) {
- if ((data->reg_num & 0x1f) == MII_ADVERTISE)
- np->advertising = data->val_in;
- mdio_write(dev, data->reg_num & 0x1f,
- data->val_in);
- }
- } else {
- if ((data->phy_id & 0x1f) == np->phy_addr_external) {
- if ((data->reg_num & 0x1f) == MII_ADVERTISE)
- np->advertising = data->val_in;
- }
- move_int_phy(dev, data->phy_id & 0x1f);
- miiport_write(dev, data->phy_id & 0x1f,
- data->reg_num & 0x1f,
- data->val_in);
- }
- return 0;
- default:
- return -EOPNOTSUPP;
- }
-}
-
-static void enable_wol_mode(struct net_device *dev, int enable_intr)
-{
- void __iomem * ioaddr = ns_ioaddr(dev);
- struct netdev_private *np = netdev_priv(dev);
-
- if (netif_msg_wol(np))
- printk(KERN_INFO "%s: remaining active for wake-on-lan\n",
- dev->name);
-
- /* For WOL we must restart the rx process in silent mode.
- * Write NULL to the RxRingPtr. Only possible if
- * rx process is stopped
- */
- writel(0, ioaddr + RxRingPtr);
-
- /* read WoL status to clear */
- readl(ioaddr + WOLCmd);
-
- /* PME on, clear status */
- writel(np->SavedClkRun | PMEEnable | PMEStatus, ioaddr + ClkRun);
-
- /* and restart the rx process */
- writel(RxOn, ioaddr + ChipCmd);
-
- if (enable_intr) {
- /* enable the WOL interrupt.
- * Could be used to send a netlink message.
- */
- writel(WOLPkt | LinkChange, ioaddr + IntrMask);
- natsemi_irq_enable(dev);
- }
-}
-
-static int netdev_close(struct net_device *dev)
-{
- void __iomem * ioaddr = ns_ioaddr(dev);
- struct netdev_private *np = netdev_priv(dev);
-
- if (netif_msg_ifdown(np))
- printk(KERN_DEBUG
- "%s: Shutting down ethercard, status was %#04x.\n",
- dev->name, (int)readl(ioaddr + ChipCmd));
- if (netif_msg_pktdata(np))
- printk(KERN_DEBUG
- "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n",
- dev->name, np->cur_tx, np->dirty_tx,
- np->cur_rx, np->dirty_rx);
-
- napi_disable(&np->napi);
-
- /*
- * FIXME: what if someone tries to close a device
- * that is suspended?
- * Should we reenable the nic to switch to
- * the final WOL settings?
- */
-
- del_timer_sync(&np->timer);
- disable_irq(dev->irq);
- spin_lock_irq(&np->lock);
- natsemi_irq_disable(dev);
- np->hands_off = 1;
- spin_unlock_irq(&np->lock);
- enable_irq(dev->irq);
-
- free_irq(dev->irq, dev);
-
- /* Interrupt disabled, interrupt handler released,
- * queue stopped, timer deleted, rtnl_lock held
- * All async codepaths that access the driver are disabled.
- */
- spin_lock_irq(&np->lock);
- np->hands_off = 0;
- readl(ioaddr + IntrMask);
- readw(ioaddr + MIntrStatus);
-
- /* Freeze Stats */
- writel(StatsFreeze, ioaddr + StatsCtrl);
-
- /* Stop the chip's Tx and Rx processes. */
- natsemi_stop_rxtx(dev);
-
- __get_stats(dev);
- spin_unlock_irq(&np->lock);
-
- /* clear the carrier last - an interrupt could reenable it otherwise */
- netif_carrier_off(dev);
- netif_stop_queue(dev);
-
- dump_ring(dev);
- drain_ring(dev);
- free_ring(dev);
-
- {
- u32 wol = readl(ioaddr + WOLCmd) & WakeOptsSummary;
- if (wol) {
- /* restart the NIC in WOL mode.
- * The nic must be stopped for this.
- */
- enable_wol_mode(dev, 0);
- } else {
- /* Restore PME enable bit unmolested */
- writel(np->SavedClkRun, ioaddr + ClkRun);
- }
- }
- return 0;
-}
-
-
-static void __devexit natsemi_remove1 (struct pci_dev *pdev)
-{
- struct net_device *dev = pci_get_drvdata(pdev);
- void __iomem * ioaddr = ns_ioaddr(dev);
-
- NATSEMI_REMOVE_FILE(pdev, dspcfg_workaround);
- unregister_netdev (dev);
- pci_release_regions (pdev);
- iounmap(ioaddr);
- free_netdev (dev);
- pci_set_drvdata(pdev, NULL);
-}
-
-#ifdef CONFIG_PM
-
-/*
- * The ns83815 chip doesn't have explicit RxStop bits.
- * Kicking the Rx or Tx process for a new packet reenables the Rx process
- * of the nic, thus this function must be very careful:
- *
- * suspend/resume synchronization:
- * entry points:
- * netdev_open, netdev_close, netdev_ioctl, set_rx_mode, intr_handler,
- * start_tx, ns_tx_timeout
- *
- * No function accesses the hardware without checking np->hands_off.
- * the check occurs under spin_lock_irq(&np->lock);
- * exceptions:
- * * netdev_ioctl: noncritical access.
- * * netdev_open: cannot happen due to the device_detach
- * * netdev_close: doesn't hurt.
- * * netdev_timer: timer stopped by natsemi_suspend.
- * * intr_handler: doesn't acquire the spinlock. suspend calls
- * disable_irq() to enforce synchronization.
- * * natsemi_poll: checks before reenabling interrupts. suspend
- * sets hands_off, disables interrupts and then waits with
- * napi_disable().
- *
- * Interrupts must be disabled, otherwise hands_off can cause irq storms.
- */
-
-static int natsemi_suspend (struct pci_dev *pdev, pm_message_t state)
-{
- struct net_device *dev = pci_get_drvdata (pdev);
- struct netdev_private *np = netdev_priv(dev);
- void __iomem * ioaddr = ns_ioaddr(dev);
-
- rtnl_lock();
- if (netif_running (dev)) {
- del_timer_sync(&np->timer);
-
- disable_irq(dev->irq);
- spin_lock_irq(&np->lock);
-
- natsemi_irq_disable(dev);
- np->hands_off = 1;
- natsemi_stop_rxtx(dev);
- netif_stop_queue(dev);
-
- spin_unlock_irq(&np->lock);
- enable_irq(dev->irq);
-
- napi_disable(&np->napi);
-
- /* Update the error counts. */
- __get_stats(dev);
-
- /* pci_power_off(pdev, -1); */
- drain_ring(dev);
- {
- u32 wol = readl(ioaddr + WOLCmd) & WakeOptsSummary;
- /* Restore PME enable bit */
- if (wol) {
- /* restart the NIC in WOL mode.
- * The nic must be stopped for this.
- * FIXME: use the WOL interrupt
- */
- enable_wol_mode(dev, 0);
- } else {
- /* Restore PME enable bit unmolested */
- writel(np->SavedClkRun, ioaddr + ClkRun);
- }
- }
- }
- netif_device_detach(dev);
- rtnl_unlock();
- return 0;
-}
-
-
-static int natsemi_resume (struct pci_dev *pdev)
-{
- struct net_device *dev = pci_get_drvdata (pdev);
- struct netdev_private *np = netdev_priv(dev);
- int ret = 0;
-
- rtnl_lock();
- if (netif_device_present(dev))
- goto out;
- if (netif_running(dev)) {
- BUG_ON(!np->hands_off);
- ret = pci_enable_device(pdev);
- if (ret < 0) {
- dev_err(&pdev->dev,
- "pci_enable_device() failed: %d\n", ret);
- goto out;
- }
- /* pci_power_on(pdev); */
-
- napi_enable(&np->napi);
-
- natsemi_reset(dev);
- init_ring(dev);
- disable_irq(dev->irq);
- spin_lock_irq(&np->lock);
- np->hands_off = 0;
- init_registers(dev);
- netif_device_attach(dev);
- spin_unlock_irq(&np->lock);
- enable_irq(dev->irq);
-
- mod_timer(&np->timer, round_jiffies(jiffies + 1*HZ));
- }
- netif_device_attach(dev);
-out:
- rtnl_unlock();
- return ret;
-}
-
-#endif /* CONFIG_PM */
-
-static struct pci_driver natsemi_driver = {
- .name = DRV_NAME,
- .id_table = natsemi_pci_tbl,
- .probe = natsemi_probe1,
- .remove = __devexit_p(natsemi_remove1),
-#ifdef CONFIG_PM
- .suspend = natsemi_suspend,
- .resume = natsemi_resume,
-#endif
-};
-
-static int __init natsemi_init_mod (void)
-{
-/* when a module, this is printed whether or not devices are found in probe */
-#ifdef MODULE
- printk(version);
-#endif
-
- return pci_register_driver(&natsemi_driver);
-}
-
-static void __exit natsemi_exit_mod (void)
-{
- pci_unregister_driver (&natsemi_driver);
-}
-
-module_init(natsemi_init_mod);
-module_exit(natsemi_exit_mod);
-
+++ /dev/null
-#define VERSION "0.23"
-/* ns83820.c by Benjamin LaHaise with contributions.
- *
- * Questions/comments/discussion to linux-ns83820@kvack.org.
- *
- * $Revision: 1.34.2.23 $
- *
- * Copyright 2001 Benjamin LaHaise.
- * Copyright 2001, 2002 Red Hat.
- *
- * Mmmm, chocolate vanilla mocha...
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- *
- * ChangeLog
- * =========
- * 20010414 0.1 - created
- * 20010622 0.2 - basic rx and tx.
- * 20010711 0.3 - added duplex and link state detection support.
- * 20010713 0.4 - zero copy, no hangs.
- * 0.5 - 64 bit dma support (davem will hate me for this)
- * - disable jumbo frames to avoid tx hangs
- * - work around tx deadlocks on my 1.02 card via
- * fiddling with TXCFG
- * 20010810 0.6 - use pci dma api for ringbuffers, work on ia64
- * 20010816 0.7 - misc cleanups
- * 20010826 0.8 - fix critical zero copy bugs
- * 0.9 - internal experiment
- * 20010827 0.10 - fix ia64 unaligned access.
- * 20010906 0.11 - accept all packets with checksum errors as
- * otherwise fragments get lost
- * - fix >> 32 bugs
- * 0.12 - add statistics counters
- * - add allmulti/promisc support
- * 20011009 0.13 - hotplug support, other smaller pci api cleanups
- * 20011204 0.13a - optical transceiver support added
- * by Michael Clark <michael@metaparadigm.com>
- * 20011205 0.13b - call register_netdev earlier in initialization
- * suppress duplicate link status messages
- * 20011117 0.14 - ethtool GDRVINFO, GLINK support from jgarzik
- * 20011204 0.15 get ppc (big endian) working
- * 20011218 0.16 various cleanups
- * 20020310 0.17 speedups
- * 20020610 0.18 - actually use the pci dma api for highmem
- * - remove pci latency register fiddling
- * 0.19 - better bist support
- * - add ihr and reset_phy parameters
- * - gmii bus probing
- * - fix missed txok introduced during performance
- * tuning
- * 0.20 - fix stupid RFEN thinko. i am such a smurf.
- * 20040828 0.21 - add hardware vlan accleration
- * by Neil Horman <nhorman@redhat.com>
- * 20050406 0.22 - improved DAC ifdefs from Andi Kleen
- * - removal of dead code from Adrian Bunk
- * - fix half duplex collision behaviour
- * Driver Overview
- * ===============
- *
- * This driver was originally written for the National Semiconductor
- * 83820 chip, a 10/100/1000 Mbps 64 bit PCI ethernet NIC. Hopefully
- * this code will turn out to be a) clean, b) correct, and c) fast.
- * With that in mind, I'm aiming to split the code up as much as
- * reasonably possible. At present there are X major sections that
- * break down into a) packet receive, b) packet transmit, c) link
- * management, d) initialization and configuration. Where possible,
- * these code paths are designed to run in parallel.
- *
- * This driver has been tested and found to work with the following
- * cards (in no particular order):
- *
- * Cameo SOHO-GA2000T SOHO-GA2500T
- * D-Link DGE-500T
- * PureData PDP8023Z-TG
- * SMC SMC9452TX SMC9462TX
- * Netgear GA621
- *
- * Special thanks to SMC for providing hardware to test this driver on.
- *
- * Reports of success or failure would be greatly appreciated.
- */
-//#define dprintk printk
-#define dprintk(x...) do { } while (0)
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/dma-mapping.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/delay.h>
-#include <linux/workqueue.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/ip.h> /* for iph */
-#include <linux/in.h> /* for IPPROTO_... */
-#include <linux/compiler.h>
-#include <linux/prefetch.h>
-#include <linux/ethtool.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/if_vlan.h>
-#include <linux/rtnetlink.h>
-#include <linux/jiffies.h>
-#include <linux/slab.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-#define DRV_NAME "ns83820"
-
-/* Global parameters. See module_param near the bottom. */
-static int ihr = 2;
-static int reset_phy = 0;
-static int lnksts = 0; /* CFG_LNKSTS bit polarity */
-
-/* Dprintk is used for more interesting debug events */
-#undef Dprintk
-#define Dprintk dprintk
-
-/* tunables */
-#define RX_BUF_SIZE 1500 /* 8192 */
-#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-#define NS83820_VLAN_ACCEL_SUPPORT
-#endif
-
-/* Must not exceed ~65000. */
-#define NR_RX_DESC 64
-#define NR_TX_DESC 128
-
-/* not tunable */
-#define REAL_RX_BUF_SIZE (RX_BUF_SIZE + 14) /* rx/tx mac addr + type */
-
-#define MIN_TX_DESC_FREE 8
-
-/* register defines */
-#define CFGCS 0x04
-
-#define CR_TXE 0x00000001
-#define CR_TXD 0x00000002
-/* Ramit : Here's a tip, don't do a RXD immediately followed by an RXE
- * The Receive engine skips one descriptor and moves
- * onto the next one!! */
-#define CR_RXE 0x00000004
-#define CR_RXD 0x00000008
-#define CR_TXR 0x00000010
-#define CR_RXR 0x00000020
-#define CR_SWI 0x00000080
-#define CR_RST 0x00000100
-
-#define PTSCR_EEBIST_FAIL 0x00000001
-#define PTSCR_EEBIST_EN 0x00000002
-#define PTSCR_EELOAD_EN 0x00000004
-#define PTSCR_RBIST_FAIL 0x000001b8
-#define PTSCR_RBIST_DONE 0x00000200
-#define PTSCR_RBIST_EN 0x00000400
-#define PTSCR_RBIST_RST 0x00002000
-
-#define MEAR_EEDI 0x00000001
-#define MEAR_EEDO 0x00000002
-#define MEAR_EECLK 0x00000004
-#define MEAR_EESEL 0x00000008
-#define MEAR_MDIO 0x00000010
-#define MEAR_MDDIR 0x00000020
-#define MEAR_MDC 0x00000040
-
-#define ISR_TXDESC3 0x40000000
-#define ISR_TXDESC2 0x20000000
-#define ISR_TXDESC1 0x10000000
-#define ISR_TXDESC0 0x08000000
-#define ISR_RXDESC3 0x04000000
-#define ISR_RXDESC2 0x02000000
-#define ISR_RXDESC1 0x01000000
-#define ISR_RXDESC0 0x00800000
-#define ISR_TXRCMP 0x00400000
-#define ISR_RXRCMP 0x00200000
-#define ISR_DPERR 0x00100000
-#define ISR_SSERR 0x00080000
-#define ISR_RMABT 0x00040000
-#define ISR_RTABT 0x00020000
-#define ISR_RXSOVR 0x00010000
-#define ISR_HIBINT 0x00008000
-#define ISR_PHY 0x00004000
-#define ISR_PME 0x00002000
-#define ISR_SWI 0x00001000
-#define ISR_MIB 0x00000800
-#define ISR_TXURN 0x00000400
-#define ISR_TXIDLE 0x00000200
-#define ISR_TXERR 0x00000100
-#define ISR_TXDESC 0x00000080
-#define ISR_TXOK 0x00000040
-#define ISR_RXORN 0x00000020
-#define ISR_RXIDLE 0x00000010
-#define ISR_RXEARLY 0x00000008
-#define ISR_RXERR 0x00000004
-#define ISR_RXDESC 0x00000002
-#define ISR_RXOK 0x00000001
-
-#define TXCFG_CSI 0x80000000
-#define TXCFG_HBI 0x40000000
-#define TXCFG_MLB 0x20000000
-#define TXCFG_ATP 0x10000000
-#define TXCFG_ECRETRY 0x00800000
-#define TXCFG_BRST_DIS 0x00080000
-#define TXCFG_MXDMA1024 0x00000000
-#define TXCFG_MXDMA512 0x00700000
-#define TXCFG_MXDMA256 0x00600000
-#define TXCFG_MXDMA128 0x00500000
-#define TXCFG_MXDMA64 0x00400000
-#define TXCFG_MXDMA32 0x00300000
-#define TXCFG_MXDMA16 0x00200000
-#define TXCFG_MXDMA8 0x00100000
-
-#define CFG_LNKSTS 0x80000000
-#define CFG_SPDSTS 0x60000000
-#define CFG_SPDSTS1 0x40000000
-#define CFG_SPDSTS0 0x20000000
-#define CFG_DUPSTS 0x10000000
-#define CFG_TBI_EN 0x01000000
-#define CFG_MODE_1000 0x00400000
-/* Ramit : Dont' ever use AUTO_1000, it never works and is buggy.
- * Read the Phy response and then configure the MAC accordingly */
-#define CFG_AUTO_1000 0x00200000
-#define CFG_PINT_CTL 0x001c0000
-#define CFG_PINT_DUPSTS 0x00100000
-#define CFG_PINT_LNKSTS 0x00080000
-#define CFG_PINT_SPDSTS 0x00040000
-#define CFG_TMRTEST 0x00020000
-#define CFG_MRM_DIS 0x00010000
-#define CFG_MWI_DIS 0x00008000
-#define CFG_T64ADDR 0x00004000
-#define CFG_PCI64_DET 0x00002000
-#define CFG_DATA64_EN 0x00001000
-#define CFG_M64ADDR 0x00000800
-#define CFG_PHY_RST 0x00000400
-#define CFG_PHY_DIS 0x00000200
-#define CFG_EXTSTS_EN 0x00000100
-#define CFG_REQALG 0x00000080
-#define CFG_SB 0x00000040
-#define CFG_POW 0x00000020
-#define CFG_EXD 0x00000010
-#define CFG_PESEL 0x00000008
-#define CFG_BROM_DIS 0x00000004
-#define CFG_EXT_125 0x00000002
-#define CFG_BEM 0x00000001
-
-#define EXTSTS_UDPPKT 0x00200000
-#define EXTSTS_TCPPKT 0x00080000
-#define EXTSTS_IPPKT 0x00020000
-#define EXTSTS_VPKT 0x00010000
-#define EXTSTS_VTG_MASK 0x0000ffff
-
-#define SPDSTS_POLARITY (CFG_SPDSTS1 | CFG_SPDSTS0 | CFG_DUPSTS | (lnksts ? CFG_LNKSTS : 0))
-
-#define MIBC_MIBS 0x00000008
-#define MIBC_ACLR 0x00000004
-#define MIBC_FRZ 0x00000002
-#define MIBC_WRN 0x00000001
-
-#define PCR_PSEN (1 << 31)
-#define PCR_PS_MCAST (1 << 30)
-#define PCR_PS_DA (1 << 29)
-#define PCR_STHI_8 (3 << 23)
-#define PCR_STLO_4 (1 << 23)
-#define PCR_FFHI_8K (3 << 21)
-#define PCR_FFLO_4K (1 << 21)
-#define PCR_PAUSE_CNT 0xFFFE
-
-#define RXCFG_AEP 0x80000000
-#define RXCFG_ARP 0x40000000
-#define RXCFG_STRIPCRC 0x20000000
-#define RXCFG_RX_FD 0x10000000
-#define RXCFG_ALP 0x08000000
-#define RXCFG_AIRL 0x04000000
-#define RXCFG_MXDMA512 0x00700000
-#define RXCFG_DRTH 0x0000003e
-#define RXCFG_DRTH0 0x00000002
-
-#define RFCR_RFEN 0x80000000
-#define RFCR_AAB 0x40000000
-#define RFCR_AAM 0x20000000
-#define RFCR_AAU 0x10000000
-#define RFCR_APM 0x08000000
-#define RFCR_APAT 0x07800000
-#define RFCR_APAT3 0x04000000
-#define RFCR_APAT2 0x02000000
-#define RFCR_APAT1 0x01000000
-#define RFCR_APAT0 0x00800000
-#define RFCR_AARP 0x00400000
-#define RFCR_MHEN 0x00200000
-#define RFCR_UHEN 0x00100000
-#define RFCR_ULM 0x00080000
-
-#define VRCR_RUDPE 0x00000080
-#define VRCR_RTCPE 0x00000040
-#define VRCR_RIPE 0x00000020
-#define VRCR_IPEN 0x00000010
-#define VRCR_DUTF 0x00000008
-#define VRCR_DVTF 0x00000004
-#define VRCR_VTREN 0x00000002
-#define VRCR_VTDEN 0x00000001
-
-#define VTCR_PPCHK 0x00000008
-#define VTCR_GCHK 0x00000004
-#define VTCR_VPPTI 0x00000002
-#define VTCR_VGTI 0x00000001
-
-#define CR 0x00
-#define CFG 0x04
-#define MEAR 0x08
-#define PTSCR 0x0c
-#define ISR 0x10
-#define IMR 0x14
-#define IER 0x18
-#define IHR 0x1c
-#define TXDP 0x20
-#define TXDP_HI 0x24
-#define TXCFG 0x28
-#define GPIOR 0x2c
-#define RXDP 0x30
-#define RXDP_HI 0x34
-#define RXCFG 0x38
-#define PQCR 0x3c
-#define WCSR 0x40
-#define PCR 0x44
-#define RFCR 0x48
-#define RFDR 0x4c
-
-#define SRR 0x58
-
-#define VRCR 0xbc
-#define VTCR 0xc0
-#define VDR 0xc4
-#define CCSR 0xcc
-
-#define TBICR 0xe0
-#define TBISR 0xe4
-#define TANAR 0xe8
-#define TANLPAR 0xec
-#define TANER 0xf0
-#define TESR 0xf4
-
-#define TBICR_MR_AN_ENABLE 0x00001000
-#define TBICR_MR_RESTART_AN 0x00000200
-
-#define TBISR_MR_LINK_STATUS 0x00000020
-#define TBISR_MR_AN_COMPLETE 0x00000004
-
-#define TANAR_PS2 0x00000100
-#define TANAR_PS1 0x00000080
-#define TANAR_HALF_DUP 0x00000040
-#define TANAR_FULL_DUP 0x00000020
-
-#define GPIOR_GP5_OE 0x00000200
-#define GPIOR_GP4_OE 0x00000100
-#define GPIOR_GP3_OE 0x00000080
-#define GPIOR_GP2_OE 0x00000040
-#define GPIOR_GP1_OE 0x00000020
-#define GPIOR_GP3_OUT 0x00000004
-#define GPIOR_GP1_OUT 0x00000001
-
-#define LINK_AUTONEGOTIATE 0x01
-#define LINK_DOWN 0x02
-#define LINK_UP 0x04
-
-#define HW_ADDR_LEN sizeof(dma_addr_t)
-#define desc_addr_set(desc, addr) \
- do { \
- ((desc)[0] = cpu_to_le32(addr)); \
- if (HW_ADDR_LEN == 8) \
- (desc)[1] = cpu_to_le32(((u64)addr) >> 32); \
- } while(0)
-#define desc_addr_get(desc) \
- (le32_to_cpu((desc)[0]) | \
- (HW_ADDR_LEN == 8 ? ((dma_addr_t)le32_to_cpu((desc)[1]))<<32 : 0))
-
-#define DESC_LINK 0
-#define DESC_BUFPTR (DESC_LINK + HW_ADDR_LEN/4)
-#define DESC_CMDSTS (DESC_BUFPTR + HW_ADDR_LEN/4)
-#define DESC_EXTSTS (DESC_CMDSTS + 4/4)
-
-#define CMDSTS_OWN 0x80000000
-#define CMDSTS_MORE 0x40000000
-#define CMDSTS_INTR 0x20000000
-#define CMDSTS_ERR 0x10000000
-#define CMDSTS_OK 0x08000000
-#define CMDSTS_RUNT 0x00200000
-#define CMDSTS_LEN_MASK 0x0000ffff
-
-#define CMDSTS_DEST_MASK 0x01800000
-#define CMDSTS_DEST_SELF 0x00800000
-#define CMDSTS_DEST_MULTI 0x01000000
-
-#define DESC_SIZE 8 /* Should be cache line sized */
-
-struct rx_info {
- spinlock_t lock;
- int up;
- unsigned long idle;
-
- struct sk_buff *skbs[NR_RX_DESC];
-
- __le32 *next_rx_desc;
- u16 next_rx, next_empty;
-
- __le32 *descs;
- dma_addr_t phy_descs;
-};
-
-
-struct ns83820 {
- u8 __iomem *base;
-
- struct pci_dev *pci_dev;
- struct net_device *ndev;
-
- struct rx_info rx_info;
- struct tasklet_struct rx_tasklet;
-
- unsigned ihr;
- struct work_struct tq_refill;
-
- /* protects everything below. irqsave when using. */
- spinlock_t misc_lock;
-
- u32 CFG_cache;
-
- u32 MEAR_cache;
- u32 IMR_cache;
-
- unsigned linkstate;
-
- spinlock_t tx_lock;
-
- u16 tx_done_idx;
- u16 tx_idx;
- volatile u16 tx_free_idx; /* idx of free desc chain */
- u16 tx_intr_idx;
-
- atomic_t nr_tx_skbs;
- struct sk_buff *tx_skbs[NR_TX_DESC];
-
- char pad[16] __attribute__((aligned(16)));
- __le32 *tx_descs;
- dma_addr_t tx_phy_descs;
-
- struct timer_list tx_watchdog;
-};
-
-static inline struct ns83820 *PRIV(struct net_device *dev)
-{
- return netdev_priv(dev);
-}
-
-#define __kick_rx(dev) writel(CR_RXE, dev->base + CR)
-
-static inline void kick_rx(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- dprintk("kick_rx: maybe kicking\n");
- if (test_and_clear_bit(0, &dev->rx_info.idle)) {
- dprintk("actually kicking\n");
- writel(dev->rx_info.phy_descs +
- (4 * DESC_SIZE * dev->rx_info.next_rx),
- dev->base + RXDP);
- if (dev->rx_info.next_rx == dev->rx_info.next_empty)
- printk(KERN_DEBUG "%s: uh-oh: next_rx == next_empty???\n",
- ndev->name);
- __kick_rx(dev);
- }
-}
-
-//free = (tx_done_idx + NR_TX_DESC-2 - free_idx) % NR_TX_DESC
-#define start_tx_okay(dev) \
- (((NR_TX_DESC-2 + dev->tx_done_idx - dev->tx_free_idx) % NR_TX_DESC) > MIN_TX_DESC_FREE)
-
-/* Packet Receiver
- *
- * The hardware supports linked lists of receive descriptors for
- * which ownership is transferred back and forth by means of an
- * ownership bit. While the hardware does support the use of a
- * ring for receive descriptors, we only make use of a chain in
- * an attempt to reduce bus traffic under heavy load scenarios.
- * This will also make bugs a bit more obvious. The current code
- * only makes use of a single rx chain; I hope to implement
- * priority based rx for version 1.0. Goal: even under overload
- * conditions, still route realtime traffic with as low jitter as
- * possible.
- */
-static inline void build_rx_desc(struct ns83820 *dev, __le32 *desc, dma_addr_t link, dma_addr_t buf, u32 cmdsts, u32 extsts)
-{
- desc_addr_set(desc + DESC_LINK, link);
- desc_addr_set(desc + DESC_BUFPTR, buf);
- desc[DESC_EXTSTS] = cpu_to_le32(extsts);
- mb();
- desc[DESC_CMDSTS] = cpu_to_le32(cmdsts);
-}
-
-#define nr_rx_empty(dev) ((NR_RX_DESC-2 + dev->rx_info.next_rx - dev->rx_info.next_empty) % NR_RX_DESC)
-static inline int ns83820_add_rx_skb(struct ns83820 *dev, struct sk_buff *skb)
-{
- unsigned next_empty;
- u32 cmdsts;
- __le32 *sg;
- dma_addr_t buf;
-
- next_empty = dev->rx_info.next_empty;
-
- /* don't overrun last rx marker */
- if (unlikely(nr_rx_empty(dev) <= 2)) {
- kfree_skb(skb);
- return 1;
- }
-
-#if 0
- dprintk("next_empty[%d] nr_used[%d] next_rx[%d]\n",
- dev->rx_info.next_empty,
- dev->rx_info.nr_used,
- dev->rx_info.next_rx
- );
-#endif
-
- sg = dev->rx_info.descs + (next_empty * DESC_SIZE);
- BUG_ON(NULL != dev->rx_info.skbs[next_empty]);
- dev->rx_info.skbs[next_empty] = skb;
-
- dev->rx_info.next_empty = (next_empty + 1) % NR_RX_DESC;
- cmdsts = REAL_RX_BUF_SIZE | CMDSTS_INTR;
- buf = pci_map_single(dev->pci_dev, skb->data,
- REAL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
- build_rx_desc(dev, sg, 0, buf, cmdsts, 0);
- /* update link of previous rx */
- if (likely(next_empty != dev->rx_info.next_rx))
- dev->rx_info.descs[((NR_RX_DESC + next_empty - 1) % NR_RX_DESC) * DESC_SIZE] = cpu_to_le32(dev->rx_info.phy_descs + (next_empty * DESC_SIZE * 4));
-
- return 0;
-}
-
-static inline int rx_refill(struct net_device *ndev, gfp_t gfp)
-{
- struct ns83820 *dev = PRIV(ndev);
- unsigned i;
- unsigned long flags = 0;
-
- if (unlikely(nr_rx_empty(dev) <= 2))
- return 0;
-
- dprintk("rx_refill(%p)\n", ndev);
- if (gfp == GFP_ATOMIC)
- spin_lock_irqsave(&dev->rx_info.lock, flags);
- for (i=0; i<NR_RX_DESC; i++) {
- struct sk_buff *skb;
- long res;
-
- /* extra 16 bytes for alignment */
- skb = __netdev_alloc_skb(ndev, REAL_RX_BUF_SIZE+16, gfp);
- if (unlikely(!skb))
- break;
-
- skb_reserve(skb, skb->data - PTR_ALIGN(skb->data, 16));
- if (gfp != GFP_ATOMIC)
- spin_lock_irqsave(&dev->rx_info.lock, flags);
- res = ns83820_add_rx_skb(dev, skb);
- if (gfp != GFP_ATOMIC)
- spin_unlock_irqrestore(&dev->rx_info.lock, flags);
- if (res) {
- i = 1;
- break;
- }
- }
- if (gfp == GFP_ATOMIC)
- spin_unlock_irqrestore(&dev->rx_info.lock, flags);
-
- return i ? 0 : -ENOMEM;
-}
-
-static void rx_refill_atomic(struct net_device *ndev)
-{
- rx_refill(ndev, GFP_ATOMIC);
-}
-
-/* REFILL */
-static inline void queue_refill(struct work_struct *work)
-{
- struct ns83820 *dev = container_of(work, struct ns83820, tq_refill);
- struct net_device *ndev = dev->ndev;
-
- rx_refill(ndev, GFP_KERNEL);
- if (dev->rx_info.up)
- kick_rx(ndev);
-}
-
-static inline void clear_rx_desc(struct ns83820 *dev, unsigned i)
-{
- build_rx_desc(dev, dev->rx_info.descs + (DESC_SIZE * i), 0, 0, CMDSTS_OWN, 0);
-}
-
-static void phy_intr(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- static const char *speeds[] = { "10", "100", "1000", "1000(?)", "1000F" };
- u32 cfg, new_cfg;
- u32 tbisr, tanar, tanlpar;
- int speed, fullduplex, newlinkstate;
-
- cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
-
- if (dev->CFG_cache & CFG_TBI_EN) {
- /* we have an optical transceiver */
- tbisr = readl(dev->base + TBISR);
- tanar = readl(dev->base + TANAR);
- tanlpar = readl(dev->base + TANLPAR);
- dprintk("phy_intr: tbisr=%08x, tanar=%08x, tanlpar=%08x\n",
- tbisr, tanar, tanlpar);
-
- if ( (fullduplex = (tanlpar & TANAR_FULL_DUP) &&
- (tanar & TANAR_FULL_DUP)) ) {
-
- /* both of us are full duplex */
- writel(readl(dev->base + TXCFG)
- | TXCFG_CSI | TXCFG_HBI | TXCFG_ATP,
- dev->base + TXCFG);
- writel(readl(dev->base + RXCFG) | RXCFG_RX_FD,
- dev->base + RXCFG);
- /* Light up full duplex LED */
- writel(readl(dev->base + GPIOR) | GPIOR_GP1_OUT,
- dev->base + GPIOR);
-
- } else if (((tanlpar & TANAR_HALF_DUP) &&
- (tanar & TANAR_HALF_DUP)) ||
- ((tanlpar & TANAR_FULL_DUP) &&
- (tanar & TANAR_HALF_DUP)) ||
- ((tanlpar & TANAR_HALF_DUP) &&
- (tanar & TANAR_FULL_DUP))) {
-
- /* one or both of us are half duplex */
- writel((readl(dev->base + TXCFG)
- & ~(TXCFG_CSI | TXCFG_HBI)) | TXCFG_ATP,
- dev->base + TXCFG);
- writel(readl(dev->base + RXCFG) & ~RXCFG_RX_FD,
- dev->base + RXCFG);
- /* Turn off full duplex LED */
- writel(readl(dev->base + GPIOR) & ~GPIOR_GP1_OUT,
- dev->base + GPIOR);
- }
-
- speed = 4; /* 1000F */
-
- } else {
- /* we have a copper transceiver */
- new_cfg = dev->CFG_cache & ~(CFG_SB | CFG_MODE_1000 | CFG_SPDSTS);
-
- if (cfg & CFG_SPDSTS1)
- new_cfg |= CFG_MODE_1000;
- else
- new_cfg &= ~CFG_MODE_1000;
-
- speed = ((cfg / CFG_SPDSTS0) & 3);
- fullduplex = (cfg & CFG_DUPSTS);
-
- if (fullduplex) {
- new_cfg |= CFG_SB;
- writel(readl(dev->base + TXCFG)
- | TXCFG_CSI | TXCFG_HBI,
- dev->base + TXCFG);
- writel(readl(dev->base + RXCFG) | RXCFG_RX_FD,
- dev->base + RXCFG);
- } else {
- writel(readl(dev->base + TXCFG)
- & ~(TXCFG_CSI | TXCFG_HBI),
- dev->base + TXCFG);
- writel(readl(dev->base + RXCFG) & ~(RXCFG_RX_FD),
- dev->base + RXCFG);
- }
-
- if ((cfg & CFG_LNKSTS) &&
- ((new_cfg ^ dev->CFG_cache) != 0)) {
- writel(new_cfg, dev->base + CFG);
- dev->CFG_cache = new_cfg;
- }
-
- dev->CFG_cache &= ~CFG_SPDSTS;
- dev->CFG_cache |= cfg & CFG_SPDSTS;
- }
-
- newlinkstate = (cfg & CFG_LNKSTS) ? LINK_UP : LINK_DOWN;
-
- if (newlinkstate & LINK_UP &&
- dev->linkstate != newlinkstate) {
- netif_start_queue(ndev);
- netif_wake_queue(ndev);
- printk(KERN_INFO "%s: link now %s mbps, %s duplex and up.\n",
- ndev->name,
- speeds[speed],
- fullduplex ? "full" : "half");
- } else if (newlinkstate & LINK_DOWN &&
- dev->linkstate != newlinkstate) {
- netif_stop_queue(ndev);
- printk(KERN_INFO "%s: link now down.\n", ndev->name);
- }
-
- dev->linkstate = newlinkstate;
-}
-
-static int ns83820_setup_rx(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- unsigned i;
- int ret;
-
- dprintk("ns83820_setup_rx(%p)\n", ndev);
-
- dev->rx_info.idle = 1;
- dev->rx_info.next_rx = 0;
- dev->rx_info.next_rx_desc = dev->rx_info.descs;
- dev->rx_info.next_empty = 0;
-
- for (i=0; i<NR_RX_DESC; i++)
- clear_rx_desc(dev, i);
-
- writel(0, dev->base + RXDP_HI);
- writel(dev->rx_info.phy_descs, dev->base + RXDP);
-
- ret = rx_refill(ndev, GFP_KERNEL);
- if (!ret) {
- dprintk("starting receiver\n");
- /* prevent the interrupt handler from stomping on us */
- spin_lock_irq(&dev->rx_info.lock);
-
- writel(0x0001, dev->base + CCSR);
- writel(0, dev->base + RFCR);
- writel(0x7fc00000, dev->base + RFCR);
- writel(0xffc00000, dev->base + RFCR);
-
- dev->rx_info.up = 1;
-
- phy_intr(ndev);
-
- /* Okay, let it rip */
- spin_lock(&dev->misc_lock);
- dev->IMR_cache |= ISR_PHY;
- dev->IMR_cache |= ISR_RXRCMP;
- //dev->IMR_cache |= ISR_RXERR;
- //dev->IMR_cache |= ISR_RXOK;
- dev->IMR_cache |= ISR_RXORN;
- dev->IMR_cache |= ISR_RXSOVR;
- dev->IMR_cache |= ISR_RXDESC;
- dev->IMR_cache |= ISR_RXIDLE;
- dev->IMR_cache |= ISR_TXDESC;
- dev->IMR_cache |= ISR_TXIDLE;
-
- writel(dev->IMR_cache, dev->base + IMR);
- writel(1, dev->base + IER);
- spin_unlock(&dev->misc_lock);
-
- kick_rx(ndev);
-
- spin_unlock_irq(&dev->rx_info.lock);
- }
- return ret;
-}
-
-static void ns83820_cleanup_rx(struct ns83820 *dev)
-{
- unsigned i;
- unsigned long flags;
-
- dprintk("ns83820_cleanup_rx(%p)\n", dev);
-
- /* disable receive interrupts */
- spin_lock_irqsave(&dev->misc_lock, flags);
- dev->IMR_cache &= ~(ISR_RXOK | ISR_RXDESC | ISR_RXERR | ISR_RXEARLY | ISR_RXIDLE);
- writel(dev->IMR_cache, dev->base + IMR);
- spin_unlock_irqrestore(&dev->misc_lock, flags);
-
- /* synchronize with the interrupt handler and kill it */
- dev->rx_info.up = 0;
- synchronize_irq(dev->pci_dev->irq);
-
- /* touch the pci bus... */
- readl(dev->base + IMR);
-
- /* assumes the transmitter is already disabled and reset */
- writel(0, dev->base + RXDP_HI);
- writel(0, dev->base + RXDP);
-
- for (i=0; i<NR_RX_DESC; i++) {
- struct sk_buff *skb = dev->rx_info.skbs[i];
- dev->rx_info.skbs[i] = NULL;
- clear_rx_desc(dev, i);
- kfree_skb(skb);
- }
-}
-
-static void ns83820_rx_kick(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- /*if (nr_rx_empty(dev) >= NR_RX_DESC/4)*/ {
- if (dev->rx_info.up) {
- rx_refill_atomic(ndev);
- kick_rx(ndev);
- }
- }
-
- if (dev->rx_info.up && nr_rx_empty(dev) > NR_RX_DESC*3/4)
- schedule_work(&dev->tq_refill);
- else
- kick_rx(ndev);
- if (dev->rx_info.idle)
- printk(KERN_DEBUG "%s: BAD\n", ndev->name);
-}
-
-/* rx_irq
- *
- */
-static void rx_irq(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- struct rx_info *info = &dev->rx_info;
- unsigned next_rx;
- int rx_rc, len;
- u32 cmdsts;
- __le32 *desc;
- unsigned long flags;
- int nr = 0;
-
- dprintk("rx_irq(%p)\n", ndev);
- dprintk("rxdp: %08x, descs: %08lx next_rx[%d]: %p next_empty[%d]: %p\n",
- readl(dev->base + RXDP),
- (long)(dev->rx_info.phy_descs),
- (int)dev->rx_info.next_rx,
- (dev->rx_info.descs + (DESC_SIZE * dev->rx_info.next_rx)),
- (int)dev->rx_info.next_empty,
- (dev->rx_info.descs + (DESC_SIZE * dev->rx_info.next_empty))
- );
-
- spin_lock_irqsave(&info->lock, flags);
- if (!info->up)
- goto out;
-
- dprintk("walking descs\n");
- next_rx = info->next_rx;
- desc = info->next_rx_desc;
- while ((CMDSTS_OWN & (cmdsts = le32_to_cpu(desc[DESC_CMDSTS]))) &&
- (cmdsts != CMDSTS_OWN)) {
- struct sk_buff *skb;
- u32 extsts = le32_to_cpu(desc[DESC_EXTSTS]);
- dma_addr_t bufptr = desc_addr_get(desc + DESC_BUFPTR);
-
- dprintk("cmdsts: %08x\n", cmdsts);
- dprintk("link: %08x\n", cpu_to_le32(desc[DESC_LINK]));
- dprintk("extsts: %08x\n", extsts);
-
- skb = info->skbs[next_rx];
- info->skbs[next_rx] = NULL;
- info->next_rx = (next_rx + 1) % NR_RX_DESC;
-
- mb();
- clear_rx_desc(dev, next_rx);
-
- pci_unmap_single(dev->pci_dev, bufptr,
- RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
- len = cmdsts & CMDSTS_LEN_MASK;
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
- /* NH: As was mentioned below, this chip is kinda
- * brain dead about vlan tag stripping. Frames
- * that are 64 bytes with a vlan header appended
- * like arp frames, or pings, are flagged as Runts
- * when the tag is stripped and hardware. This
- * also means that the OK bit in the descriptor
- * is cleared when the frame comes in so we have
- * to do a specific length check here to make sure
- * the frame would have been ok, had we not stripped
- * the tag.
- */
- if (likely((CMDSTS_OK & cmdsts) ||
- ((cmdsts & CMDSTS_RUNT) && len >= 56))) {
-#else
- if (likely(CMDSTS_OK & cmdsts)) {
-#endif
- skb_put(skb, len);
- if (unlikely(!skb))
- goto netdev_mangle_me_harder_failed;
- if (cmdsts & CMDSTS_DEST_MULTI)
- ndev->stats.multicast++;
- ndev->stats.rx_packets++;
- ndev->stats.rx_bytes += len;
- if ((extsts & 0x002a0000) && !(extsts & 0x00540000)) {
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- } else {
- skb_checksum_none_assert(skb);
- }
- skb->protocol = eth_type_trans(skb, ndev);
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
- if(extsts & EXTSTS_VPKT) {
- unsigned short tag;
-
- tag = ntohs(extsts & EXTSTS_VTG_MASK);
- __vlan_hwaccel_put_tag(skb, tag);
- }
-#endif
- rx_rc = netif_rx(skb);
- if (NET_RX_DROP == rx_rc) {
-netdev_mangle_me_harder_failed:
- ndev->stats.rx_dropped++;
- }
- } else {
- kfree_skb(skb);
- }
-
- nr++;
- next_rx = info->next_rx;
- desc = info->descs + (DESC_SIZE * next_rx);
- }
- info->next_rx = next_rx;
- info->next_rx_desc = info->descs + (DESC_SIZE * next_rx);
-
-out:
- if (0 && !nr) {
- Dprintk("dazed: cmdsts_f: %08x\n", cmdsts);
- }
-
- spin_unlock_irqrestore(&info->lock, flags);
-}
-
-static void rx_action(unsigned long _dev)
-{
- struct net_device *ndev = (void *)_dev;
- struct ns83820 *dev = PRIV(ndev);
- rx_irq(ndev);
- writel(ihr, dev->base + IHR);
-
- spin_lock_irq(&dev->misc_lock);
- dev->IMR_cache |= ISR_RXDESC;
- writel(dev->IMR_cache, dev->base + IMR);
- spin_unlock_irq(&dev->misc_lock);
-
- rx_irq(ndev);
- ns83820_rx_kick(ndev);
-}
-
-/* Packet Transmit code
- */
-static inline void kick_tx(struct ns83820 *dev)
-{
- dprintk("kick_tx(%p): tx_idx=%d free_idx=%d\n",
- dev, dev->tx_idx, dev->tx_free_idx);
- writel(CR_TXE, dev->base + CR);
-}
-
-/* No spinlock needed on the transmit irq path as the interrupt handler is
- * serialized.
- */
-static void do_tx_done(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 cmdsts, tx_done_idx;
- __le32 *desc;
-
- dprintk("do_tx_done(%p)\n", ndev);
- tx_done_idx = dev->tx_done_idx;
- desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
-
- dprintk("tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
- tx_done_idx, dev->tx_free_idx, le32_to_cpu(desc[DESC_CMDSTS]));
- while ((tx_done_idx != dev->tx_free_idx) &&
- !(CMDSTS_OWN & (cmdsts = le32_to_cpu(desc[DESC_CMDSTS]))) ) {
- struct sk_buff *skb;
- unsigned len;
- dma_addr_t addr;
-
- if (cmdsts & CMDSTS_ERR)
- ndev->stats.tx_errors++;
- if (cmdsts & CMDSTS_OK)
- ndev->stats.tx_packets++;
- if (cmdsts & CMDSTS_OK)
- ndev->stats.tx_bytes += cmdsts & 0xffff;
-
- dprintk("tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
- tx_done_idx, dev->tx_free_idx, cmdsts);
- skb = dev->tx_skbs[tx_done_idx];
- dev->tx_skbs[tx_done_idx] = NULL;
- dprintk("done(%p)\n", skb);
-
- len = cmdsts & CMDSTS_LEN_MASK;
- addr = desc_addr_get(desc + DESC_BUFPTR);
- if (skb) {
- pci_unmap_single(dev->pci_dev,
- addr,
- len,
- PCI_DMA_TODEVICE);
- dev_kfree_skb_irq(skb);
- atomic_dec(&dev->nr_tx_skbs);
- } else
- pci_unmap_page(dev->pci_dev,
- addr,
- len,
- PCI_DMA_TODEVICE);
-
- tx_done_idx = (tx_done_idx + 1) % NR_TX_DESC;
- dev->tx_done_idx = tx_done_idx;
- desc[DESC_CMDSTS] = cpu_to_le32(0);
- mb();
- desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
- }
-
- /* Allow network stack to resume queueing packets after we've
- * finished transmitting at least 1/4 of the packets in the queue.
- */
- if (netif_queue_stopped(ndev) && start_tx_okay(dev)) {
- dprintk("start_queue(%p)\n", ndev);
- netif_start_queue(ndev);
- netif_wake_queue(ndev);
- }
-}
-
-static void ns83820_cleanup_tx(struct ns83820 *dev)
-{
- unsigned i;
-
- for (i=0; i<NR_TX_DESC; i++) {
- struct sk_buff *skb = dev->tx_skbs[i];
- dev->tx_skbs[i] = NULL;
- if (skb) {
- __le32 *desc = dev->tx_descs + (i * DESC_SIZE);
- pci_unmap_single(dev->pci_dev,
- desc_addr_get(desc + DESC_BUFPTR),
- le32_to_cpu(desc[DESC_CMDSTS]) & CMDSTS_LEN_MASK,
- PCI_DMA_TODEVICE);
- dev_kfree_skb_irq(skb);
- atomic_dec(&dev->nr_tx_skbs);
- }
- }
-
- memset(dev->tx_descs, 0, NR_TX_DESC * DESC_SIZE * 4);
-}
-
-/* transmit routine. This code relies on the network layer serializing
- * its calls in, but will run happily in parallel with the interrupt
- * handler. This code currently has provisions for fragmenting tx buffers
- * while trying to track down a bug in either the zero copy code or
- * the tx fifo (hence the MAX_FRAG_LEN).
- */
-static netdev_tx_t ns83820_hard_start_xmit(struct sk_buff *skb,
- struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 free_idx, cmdsts, extsts;
- int nr_free, nr_frags;
- unsigned tx_done_idx, last_idx;
- dma_addr_t buf;
- unsigned len;
- skb_frag_t *frag;
- int stopped = 0;
- int do_intr = 0;
- volatile __le32 *first_desc;
-
- dprintk("ns83820_hard_start_xmit\n");
-
- nr_frags = skb_shinfo(skb)->nr_frags;
-again:
- if (unlikely(dev->CFG_cache & CFG_LNKSTS)) {
- netif_stop_queue(ndev);
- if (unlikely(dev->CFG_cache & CFG_LNKSTS))
- return NETDEV_TX_BUSY;
- netif_start_queue(ndev);
- }
-
- last_idx = free_idx = dev->tx_free_idx;
- tx_done_idx = dev->tx_done_idx;
- nr_free = (tx_done_idx + NR_TX_DESC-2 - free_idx) % NR_TX_DESC;
- nr_free -= 1;
- if (nr_free <= nr_frags) {
- dprintk("stop_queue - not enough(%p)\n", ndev);
- netif_stop_queue(ndev);
-
- /* Check again: we may have raced with a tx done irq */
- if (dev->tx_done_idx != tx_done_idx) {
- dprintk("restart queue(%p)\n", ndev);
- netif_start_queue(ndev);
- goto again;
- }
- return NETDEV_TX_BUSY;
- }
-
- if (free_idx == dev->tx_intr_idx) {
- do_intr = 1;
- dev->tx_intr_idx = (dev->tx_intr_idx + NR_TX_DESC/4) % NR_TX_DESC;
- }
-
- nr_free -= nr_frags;
- if (nr_free < MIN_TX_DESC_FREE) {
- dprintk("stop_queue - last entry(%p)\n", ndev);
- netif_stop_queue(ndev);
- stopped = 1;
- }
-
- frag = skb_shinfo(skb)->frags;
- if (!nr_frags)
- frag = NULL;
- extsts = 0;
- if (skb->ip_summed == CHECKSUM_PARTIAL) {
- extsts |= EXTSTS_IPPKT;
- if (IPPROTO_TCP == ip_hdr(skb)->protocol)
- extsts |= EXTSTS_TCPPKT;
- else if (IPPROTO_UDP == ip_hdr(skb)->protocol)
- extsts |= EXTSTS_UDPPKT;
- }
-
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
- if(vlan_tx_tag_present(skb)) {
- /* fetch the vlan tag info out of the
- * ancillary data if the vlan code
- * is using hw vlan acceleration
- */
- short tag = vlan_tx_tag_get(skb);
- extsts |= (EXTSTS_VPKT | htons(tag));
- }
-#endif
-
- len = skb->len;
- if (nr_frags)
- len -= skb->data_len;
- buf = pci_map_single(dev->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
-
- first_desc = dev->tx_descs + (free_idx * DESC_SIZE);
-
- for (;;) {
- volatile __le32 *desc = dev->tx_descs + (free_idx * DESC_SIZE);
-
- dprintk("frag[%3u]: %4u @ 0x%08Lx\n", free_idx, len,
- (unsigned long long)buf);
- last_idx = free_idx;
- free_idx = (free_idx + 1) % NR_TX_DESC;
- desc[DESC_LINK] = cpu_to_le32(dev->tx_phy_descs + (free_idx * DESC_SIZE * 4));
- desc_addr_set(desc + DESC_BUFPTR, buf);
- desc[DESC_EXTSTS] = cpu_to_le32(extsts);
-
- cmdsts = ((nr_frags) ? CMDSTS_MORE : do_intr ? CMDSTS_INTR : 0);
- cmdsts |= (desc == first_desc) ? 0 : CMDSTS_OWN;
- cmdsts |= len;
- desc[DESC_CMDSTS] = cpu_to_le32(cmdsts);
-
- if (!nr_frags)
- break;
-
- buf = pci_map_page(dev->pci_dev, frag->page,
- frag->page_offset,
- frag->size, PCI_DMA_TODEVICE);
- dprintk("frag: buf=%08Lx page=%08lx offset=%08lx\n",
- (long long)buf, (long) page_to_pfn(frag->page),
- frag->page_offset);
- len = frag->size;
- frag++;
- nr_frags--;
- }
- dprintk("done pkt\n");
-
- spin_lock_irq(&dev->tx_lock);
- dev->tx_skbs[last_idx] = skb;
- first_desc[DESC_CMDSTS] |= cpu_to_le32(CMDSTS_OWN);
- dev->tx_free_idx = free_idx;
- atomic_inc(&dev->nr_tx_skbs);
- spin_unlock_irq(&dev->tx_lock);
-
- kick_tx(dev);
-
- /* Check again: we may have raced with a tx done irq */
- if (stopped && (dev->tx_done_idx != tx_done_idx) && start_tx_okay(dev))
- netif_start_queue(ndev);
-
- return NETDEV_TX_OK;
-}
-
-static void ns83820_update_stats(struct ns83820 *dev)
-{
- struct net_device *ndev = dev->ndev;
- u8 __iomem *base = dev->base;
-
- /* the DP83820 will freeze counters, so we need to read all of them */
- ndev->stats.rx_errors += readl(base + 0x60) & 0xffff;
- ndev->stats.rx_crc_errors += readl(base + 0x64) & 0xffff;
- ndev->stats.rx_missed_errors += readl(base + 0x68) & 0xffff;
- ndev->stats.rx_frame_errors += readl(base + 0x6c) & 0xffff;
- /*ndev->stats.rx_symbol_errors +=*/ readl(base + 0x70);
- ndev->stats.rx_length_errors += readl(base + 0x74) & 0xffff;
- ndev->stats.rx_length_errors += readl(base + 0x78) & 0xffff;
- /*ndev->stats.rx_badopcode_errors += */ readl(base + 0x7c);
- /*ndev->stats.rx_pause_count += */ readl(base + 0x80);
- /*ndev->stats.tx_pause_count += */ readl(base + 0x84);
- ndev->stats.tx_carrier_errors += readl(base + 0x88) & 0xff;
-}
-
-static struct net_device_stats *ns83820_get_stats(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
-
- /* somewhat overkill */
- spin_lock_irq(&dev->misc_lock);
- ns83820_update_stats(dev);
- spin_unlock_irq(&dev->misc_lock);
-
- return &ndev->stats;
-}
-
-/* Let ethtool retrieve info */
-static int ns83820_get_settings(struct net_device *ndev,
- struct ethtool_cmd *cmd)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 cfg, tanar, tbicr;
- int fullduplex = 0;
-
- /*
- * Here's the list of available ethtool commands from other drivers:
- * cmd->advertising =
- * ethtool_cmd_speed_set(cmd, ...)
- * cmd->duplex =
- * cmd->port = 0;
- * cmd->phy_address =
- * cmd->transceiver = 0;
- * cmd->autoneg =
- * cmd->maxtxpkt = 0;
- * cmd->maxrxpkt = 0;
- */
-
- /* read current configuration */
- cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
- tanar = readl(dev->base + TANAR);
- tbicr = readl(dev->base + TBICR);
-
- fullduplex = (cfg & CFG_DUPSTS) ? 1 : 0;
-
- cmd->supported = SUPPORTED_Autoneg;
-
- if (dev->CFG_cache & CFG_TBI_EN) {
- /* we have optical interface */
- cmd->supported |= SUPPORTED_1000baseT_Half |
- SUPPORTED_1000baseT_Full |
- SUPPORTED_FIBRE;
- cmd->port = PORT_FIBRE;
- } else {
- /* we have copper */
- cmd->supported |= SUPPORTED_10baseT_Half |
- SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half |
- SUPPORTED_100baseT_Full | SUPPORTED_1000baseT_Half |
- SUPPORTED_1000baseT_Full |
- SUPPORTED_MII;
- cmd->port = PORT_MII;
- }
-
- cmd->duplex = fullduplex ? DUPLEX_FULL : DUPLEX_HALF;
- switch (cfg / CFG_SPDSTS0 & 3) {
- case 2:
- ethtool_cmd_speed_set(cmd, SPEED_1000);
- break;
- case 1:
- ethtool_cmd_speed_set(cmd, SPEED_100);
- break;
- default:
- ethtool_cmd_speed_set(cmd, SPEED_10);
- break;
- }
- cmd->autoneg = (tbicr & TBICR_MR_AN_ENABLE)
- ? AUTONEG_ENABLE : AUTONEG_DISABLE;
- return 0;
-}
-
-/* Let ethool change settings*/
-static int ns83820_set_settings(struct net_device *ndev,
- struct ethtool_cmd *cmd)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 cfg, tanar;
- int have_optical = 0;
- int fullduplex = 0;
-
- /* read current configuration */
- cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
- tanar = readl(dev->base + TANAR);
-
- if (dev->CFG_cache & CFG_TBI_EN) {
- /* we have optical */
- have_optical = 1;
- fullduplex = (tanar & TANAR_FULL_DUP);
-
- } else {
- /* we have copper */
- fullduplex = cfg & CFG_DUPSTS;
- }
-
- spin_lock_irq(&dev->misc_lock);
- spin_lock(&dev->tx_lock);
-
- /* Set duplex */
- if (cmd->duplex != fullduplex) {
- if (have_optical) {
- /*set full duplex*/
- if (cmd->duplex == DUPLEX_FULL) {
- /* force full duplex */
- writel(readl(dev->base + TXCFG)
- | TXCFG_CSI | TXCFG_HBI | TXCFG_ATP,
- dev->base + TXCFG);
- writel(readl(dev->base + RXCFG) | RXCFG_RX_FD,
- dev->base + RXCFG);
- /* Light up full duplex LED */
- writel(readl(dev->base + GPIOR) | GPIOR_GP1_OUT,
- dev->base + GPIOR);
- } else {
- /*TODO: set half duplex */
- }
-
- } else {
- /*we have copper*/
- /* TODO: Set duplex for copper cards */
- }
- printk(KERN_INFO "%s: Duplex set via ethtool\n",
- ndev->name);
- }
-
- /* Set autonegotiation */
- if (1) {
- if (cmd->autoneg == AUTONEG_ENABLE) {
- /* restart auto negotiation */
- writel(TBICR_MR_AN_ENABLE | TBICR_MR_RESTART_AN,
- dev->base + TBICR);
- writel(TBICR_MR_AN_ENABLE, dev->base + TBICR);
- dev->linkstate = LINK_AUTONEGOTIATE;
-
- printk(KERN_INFO "%s: autoneg enabled via ethtool\n",
- ndev->name);
- } else {
- /* disable auto negotiation */
- writel(0x00000000, dev->base + TBICR);
- }
-
- printk(KERN_INFO "%s: autoneg %s via ethtool\n", ndev->name,
- cmd->autoneg ? "ENABLED" : "DISABLED");
- }
-
- phy_intr(ndev);
- spin_unlock(&dev->tx_lock);
- spin_unlock_irq(&dev->misc_lock);
-
- return 0;
-}
-/* end ethtool get/set support -df */
-
-static void ns83820_get_drvinfo(struct net_device *ndev, struct ethtool_drvinfo *info)
-{
- struct ns83820 *dev = PRIV(ndev);
- strcpy(info->driver, "ns83820");
- strcpy(info->version, VERSION);
- strcpy(info->bus_info, pci_name(dev->pci_dev));
-}
-
-static u32 ns83820_get_link(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
- return cfg & CFG_LNKSTS ? 1 : 0;
-}
-
-static const struct ethtool_ops ops = {
- .get_settings = ns83820_get_settings,
- .set_settings = ns83820_set_settings,
- .get_drvinfo = ns83820_get_drvinfo,
- .get_link = ns83820_get_link
-};
-
-static inline void ns83820_disable_interrupts(struct ns83820 *dev)
-{
- writel(0, dev->base + IMR);
- writel(0, dev->base + IER);
- readl(dev->base + IER);
-}
-
-/* this function is called in irq context from the ISR */
-static void ns83820_mib_isr(struct ns83820 *dev)
-{
- unsigned long flags;
- spin_lock_irqsave(&dev->misc_lock, flags);
- ns83820_update_stats(dev);
- spin_unlock_irqrestore(&dev->misc_lock, flags);
-}
-
-static void ns83820_do_isr(struct net_device *ndev, u32 isr);
-static irqreturn_t ns83820_irq(int foo, void *data)
-{
- struct net_device *ndev = data;
- struct ns83820 *dev = PRIV(ndev);
- u32 isr;
- dprintk("ns83820_irq(%p)\n", ndev);
-
- dev->ihr = 0;
-
- isr = readl(dev->base + ISR);
- dprintk("irq: %08x\n", isr);
- ns83820_do_isr(ndev, isr);
- return IRQ_HANDLED;
-}
-
-static void ns83820_do_isr(struct net_device *ndev, u32 isr)
-{
- struct ns83820 *dev = PRIV(ndev);
- unsigned long flags;
-
-#ifdef DEBUG
- if (isr & ~(ISR_PHY | ISR_RXDESC | ISR_RXEARLY | ISR_RXOK | ISR_RXERR | ISR_TXIDLE | ISR_TXOK | ISR_TXDESC))
- Dprintk("odd isr? 0x%08x\n", isr);
-#endif
-
- if (ISR_RXIDLE & isr) {
- dev->rx_info.idle = 1;
- Dprintk("oh dear, we are idle\n");
- ns83820_rx_kick(ndev);
- }
-
- if ((ISR_RXDESC | ISR_RXOK) & isr) {
- prefetch(dev->rx_info.next_rx_desc);
-
- spin_lock_irqsave(&dev->misc_lock, flags);
- dev->IMR_cache &= ~(ISR_RXDESC | ISR_RXOK);
- writel(dev->IMR_cache, dev->base + IMR);
- spin_unlock_irqrestore(&dev->misc_lock, flags);
-
- tasklet_schedule(&dev->rx_tasklet);
- //rx_irq(ndev);
- //writel(4, dev->base + IHR);
- }
-
- if ((ISR_RXIDLE | ISR_RXORN | ISR_RXDESC | ISR_RXOK | ISR_RXERR) & isr)
- ns83820_rx_kick(ndev);
-
- if (unlikely(ISR_RXSOVR & isr)) {
- //printk("overrun: rxsovr\n");
- ndev->stats.rx_fifo_errors++;
- }
-
- if (unlikely(ISR_RXORN & isr)) {
- //printk("overrun: rxorn\n");
- ndev->stats.rx_fifo_errors++;
- }
-
- if ((ISR_RXRCMP & isr) && dev->rx_info.up)
- writel(CR_RXE, dev->base + CR);
-
- if (ISR_TXIDLE & isr) {
- u32 txdp;
- txdp = readl(dev->base + TXDP);
- dprintk("txdp: %08x\n", txdp);
- txdp -= dev->tx_phy_descs;
- dev->tx_idx = txdp / (DESC_SIZE * 4);
- if (dev->tx_idx >= NR_TX_DESC) {
- printk(KERN_ALERT "%s: BUG -- txdp out of range\n", ndev->name);
- dev->tx_idx = 0;
- }
- /* The may have been a race between a pci originated read
- * and the descriptor update from the cpu. Just in case,
- * kick the transmitter if the hardware thinks it is on a
- * different descriptor than we are.
- */
- if (dev->tx_idx != dev->tx_free_idx)
- kick_tx(dev);
- }
-
- /* Defer tx ring processing until more than a minimum amount of
- * work has accumulated
- */
- if ((ISR_TXDESC | ISR_TXIDLE | ISR_TXOK | ISR_TXERR) & isr) {
- spin_lock_irqsave(&dev->tx_lock, flags);
- do_tx_done(ndev);
- spin_unlock_irqrestore(&dev->tx_lock, flags);
-
- /* Disable TxOk if there are no outstanding tx packets.
- */
- if ((dev->tx_done_idx == dev->tx_free_idx) &&
- (dev->IMR_cache & ISR_TXOK)) {
- spin_lock_irqsave(&dev->misc_lock, flags);
- dev->IMR_cache &= ~ISR_TXOK;
- writel(dev->IMR_cache, dev->base + IMR);
- spin_unlock_irqrestore(&dev->misc_lock, flags);
- }
- }
-
- /* The TxIdle interrupt can come in before the transmit has
- * completed. Normally we reap packets off of the combination
- * of TxDesc and TxIdle and leave TxOk disabled (since it
- * occurs on every packet), but when no further irqs of this
- * nature are expected, we must enable TxOk.
- */
- if ((ISR_TXIDLE & isr) && (dev->tx_done_idx != dev->tx_free_idx)) {
- spin_lock_irqsave(&dev->misc_lock, flags);
- dev->IMR_cache |= ISR_TXOK;
- writel(dev->IMR_cache, dev->base + IMR);
- spin_unlock_irqrestore(&dev->misc_lock, flags);
- }
-
- /* MIB interrupt: one of the statistics counters is about to overflow */
- if (unlikely(ISR_MIB & isr))
- ns83820_mib_isr(dev);
-
- /* PHY: Link up/down/negotiation state change */
- if (unlikely(ISR_PHY & isr))
- phy_intr(ndev);
-
-#if 0 /* Still working on the interrupt mitigation strategy */
- if (dev->ihr)
- writel(dev->ihr, dev->base + IHR);
-#endif
-}
-
-static void ns83820_do_reset(struct ns83820 *dev, u32 which)
-{
- Dprintk("resetting chip...\n");
- writel(which, dev->base + CR);
- do {
- schedule();
- } while (readl(dev->base + CR) & which);
- Dprintk("okay!\n");
-}
-
-static int ns83820_stop(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
-
- /* FIXME: protect against interrupt handler? */
- del_timer_sync(&dev->tx_watchdog);
-
- ns83820_disable_interrupts(dev);
-
- dev->rx_info.up = 0;
- synchronize_irq(dev->pci_dev->irq);
-
- ns83820_do_reset(dev, CR_RST);
-
- synchronize_irq(dev->pci_dev->irq);
-
- spin_lock_irq(&dev->misc_lock);
- dev->IMR_cache &= ~(ISR_TXURN | ISR_TXIDLE | ISR_TXERR | ISR_TXDESC | ISR_TXOK);
- spin_unlock_irq(&dev->misc_lock);
-
- ns83820_cleanup_rx(dev);
- ns83820_cleanup_tx(dev);
-
- return 0;
-}
-
-static void ns83820_tx_timeout(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- u32 tx_done_idx;
- __le32 *desc;
- unsigned long flags;
-
- spin_lock_irqsave(&dev->tx_lock, flags);
-
- tx_done_idx = dev->tx_done_idx;
- desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
-
- printk(KERN_INFO "%s: tx_timeout: tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
- ndev->name,
- tx_done_idx, dev->tx_free_idx, le32_to_cpu(desc[DESC_CMDSTS]));
-
-#if defined(DEBUG)
- {
- u32 isr;
- isr = readl(dev->base + ISR);
- printk("irq: %08x imr: %08x\n", isr, dev->IMR_cache);
- ns83820_do_isr(ndev, isr);
- }
-#endif
-
- do_tx_done(ndev);
-
- tx_done_idx = dev->tx_done_idx;
- desc = dev->tx_descs + (tx_done_idx * DESC_SIZE);
-
- printk(KERN_INFO "%s: after: tx_done_idx=%d free_idx=%d cmdsts=%08x\n",
- ndev->name,
- tx_done_idx, dev->tx_free_idx, le32_to_cpu(desc[DESC_CMDSTS]));
-
- spin_unlock_irqrestore(&dev->tx_lock, flags);
-}
-
-static void ns83820_tx_watch(unsigned long data)
-{
- struct net_device *ndev = (void *)data;
- struct ns83820 *dev = PRIV(ndev);
-
-#if defined(DEBUG)
- printk("ns83820_tx_watch: %u %u %d\n",
- dev->tx_done_idx, dev->tx_free_idx, atomic_read(&dev->nr_tx_skbs)
- );
-#endif
-
- if (time_after(jiffies, dev_trans_start(ndev) + 1*HZ) &&
- dev->tx_done_idx != dev->tx_free_idx) {
- printk(KERN_DEBUG "%s: ns83820_tx_watch: %u %u %d\n",
- ndev->name,
- dev->tx_done_idx, dev->tx_free_idx,
- atomic_read(&dev->nr_tx_skbs));
- ns83820_tx_timeout(ndev);
- }
-
- mod_timer(&dev->tx_watchdog, jiffies + 2*HZ);
-}
-
-static int ns83820_open(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- unsigned i;
- u32 desc;
- int ret;
-
- dprintk("ns83820_open\n");
-
- writel(0, dev->base + PQCR);
-
- ret = ns83820_setup_rx(ndev);
- if (ret)
- goto failed;
-
- memset(dev->tx_descs, 0, 4 * NR_TX_DESC * DESC_SIZE);
- for (i=0; i<NR_TX_DESC; i++) {
- dev->tx_descs[(i * DESC_SIZE) + DESC_LINK]
- = cpu_to_le32(
- dev->tx_phy_descs
- + ((i+1) % NR_TX_DESC) * DESC_SIZE * 4);
- }
-
- dev->tx_idx = 0;
- dev->tx_done_idx = 0;
- desc = dev->tx_phy_descs;
- writel(0, dev->base + TXDP_HI);
- writel(desc, dev->base + TXDP);
-
- init_timer(&dev->tx_watchdog);
- dev->tx_watchdog.data = (unsigned long)ndev;
- dev->tx_watchdog.function = ns83820_tx_watch;
- mod_timer(&dev->tx_watchdog, jiffies + 2*HZ);
-
- netif_start_queue(ndev); /* FIXME: wait for phy to come up */
-
- return 0;
-
-failed:
- ns83820_stop(ndev);
- return ret;
-}
-
-static void ns83820_getmac(struct ns83820 *dev, u8 *mac)
-{
- unsigned i;
- for (i=0; i<3; i++) {
- u32 data;
-
- /* Read from the perfect match memory: this is loaded by
- * the chip from the EEPROM via the EELOAD self test.
- */
- writel(i*2, dev->base + RFCR);
- data = readl(dev->base + RFDR);
-
- *mac++ = data;
- *mac++ = data >> 8;
- }
-}
-
-static int ns83820_change_mtu(struct net_device *ndev, int new_mtu)
-{
- if (new_mtu > RX_BUF_SIZE)
- return -EINVAL;
- ndev->mtu = new_mtu;
- return 0;
-}
-
-static void ns83820_set_multicast(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- u8 __iomem *rfcr = dev->base + RFCR;
- u32 and_mask = 0xffffffff;
- u32 or_mask = 0;
- u32 val;
-
- if (ndev->flags & IFF_PROMISC)
- or_mask |= RFCR_AAU | RFCR_AAM;
- else
- and_mask &= ~(RFCR_AAU | RFCR_AAM);
-
- if (ndev->flags & IFF_ALLMULTI || netdev_mc_count(ndev))
- or_mask |= RFCR_AAM;
- else
- and_mask &= ~RFCR_AAM;
-
- spin_lock_irq(&dev->misc_lock);
- val = (readl(rfcr) & and_mask) | or_mask;
- /* Ramit : RFCR Write Fix doc says RFEN must be 0 modify other bits */
- writel(val & ~RFCR_RFEN, rfcr);
- writel(val, rfcr);
- spin_unlock_irq(&dev->misc_lock);
-}
-
-static void ns83820_run_bist(struct net_device *ndev, const char *name, u32 enable, u32 done, u32 fail)
-{
- struct ns83820 *dev = PRIV(ndev);
- int timed_out = 0;
- unsigned long start;
- u32 status;
- int loops = 0;
-
- dprintk("%s: start %s\n", ndev->name, name);
-
- start = jiffies;
-
- writel(enable, dev->base + PTSCR);
- for (;;) {
- loops++;
- status = readl(dev->base + PTSCR);
- if (!(status & enable))
- break;
- if (status & done)
- break;
- if (status & fail)
- break;
- if (time_after_eq(jiffies, start + HZ)) {
- timed_out = 1;
- break;
- }
- schedule_timeout_uninterruptible(1);
- }
-
- if (status & fail)
- printk(KERN_INFO "%s: %s failed! (0x%08x & 0x%08x)\n",
- ndev->name, name, status, fail);
- else if (timed_out)
- printk(KERN_INFO "%s: run_bist %s timed out! (%08x)\n",
- ndev->name, name, status);
-
- dprintk("%s: done %s in %d loops\n", ndev->name, name, loops);
-}
-
-#ifdef PHY_CODE_IS_FINISHED
-static void ns83820_mii_write_bit(struct ns83820 *dev, int bit)
-{
- /* drive MDC low */
- dev->MEAR_cache &= ~MEAR_MDC;
- writel(dev->MEAR_cache, dev->base + MEAR);
- readl(dev->base + MEAR);
-
- /* enable output, set bit */
- dev->MEAR_cache |= MEAR_MDDIR;
- if (bit)
- dev->MEAR_cache |= MEAR_MDIO;
- else
- dev->MEAR_cache &= ~MEAR_MDIO;
-
- /* set the output bit */
- writel(dev->MEAR_cache, dev->base + MEAR);
- readl(dev->base + MEAR);
-
- /* Wait. Max clock rate is 2.5MHz, this way we come in under 1MHz */
- udelay(1);
-
- /* drive MDC high causing the data bit to be latched */
- dev->MEAR_cache |= MEAR_MDC;
- writel(dev->MEAR_cache, dev->base + MEAR);
- readl(dev->base + MEAR);
-
- /* Wait again... */
- udelay(1);
-}
-
-static int ns83820_mii_read_bit(struct ns83820 *dev)
-{
- int bit;
-
- /* drive MDC low, disable output */
- dev->MEAR_cache &= ~MEAR_MDC;
- dev->MEAR_cache &= ~MEAR_MDDIR;
- writel(dev->MEAR_cache, dev->base + MEAR);
- readl(dev->base + MEAR);
-
- /* Wait. Max clock rate is 2.5MHz, this way we come in under 1MHz */
- udelay(1);
-
- /* drive MDC high causing the data bit to be latched */
- bit = (readl(dev->base + MEAR) & MEAR_MDIO) ? 1 : 0;
- dev->MEAR_cache |= MEAR_MDC;
- writel(dev->MEAR_cache, dev->base + MEAR);
-
- /* Wait again... */
- udelay(1);
-
- return bit;
-}
-
-static unsigned ns83820_mii_read_reg(struct ns83820 *dev, unsigned phy, unsigned reg)
-{
- unsigned data = 0;
- int i;
-
- /* read some garbage so that we eventually sync up */
- for (i=0; i<64; i++)
- ns83820_mii_read_bit(dev);
-
- ns83820_mii_write_bit(dev, 0); /* start */
- ns83820_mii_write_bit(dev, 1);
- ns83820_mii_write_bit(dev, 1); /* opcode read */
- ns83820_mii_write_bit(dev, 0);
-
- /* write out the phy address: 5 bits, msb first */
- for (i=0; i<5; i++)
- ns83820_mii_write_bit(dev, phy & (0x10 >> i));
-
- /* write out the register address, 5 bits, msb first */
- for (i=0; i<5; i++)
- ns83820_mii_write_bit(dev, reg & (0x10 >> i));
-
- ns83820_mii_read_bit(dev); /* turn around cycles */
- ns83820_mii_read_bit(dev);
-
- /* read in the register data, 16 bits msb first */
- for (i=0; i<16; i++) {
- data <<= 1;
- data |= ns83820_mii_read_bit(dev);
- }
-
- return data;
-}
-
-static unsigned ns83820_mii_write_reg(struct ns83820 *dev, unsigned phy, unsigned reg, unsigned data)
-{
- int i;
-
- /* read some garbage so that we eventually sync up */
- for (i=0; i<64; i++)
- ns83820_mii_read_bit(dev);
-
- ns83820_mii_write_bit(dev, 0); /* start */
- ns83820_mii_write_bit(dev, 1);
- ns83820_mii_write_bit(dev, 0); /* opcode read */
- ns83820_mii_write_bit(dev, 1);
-
- /* write out the phy address: 5 bits, msb first */
- for (i=0; i<5; i++)
- ns83820_mii_write_bit(dev, phy & (0x10 >> i));
-
- /* write out the register address, 5 bits, msb first */
- for (i=0; i<5; i++)
- ns83820_mii_write_bit(dev, reg & (0x10 >> i));
-
- ns83820_mii_read_bit(dev); /* turn around cycles */
- ns83820_mii_read_bit(dev);
-
- /* read in the register data, 16 bits msb first */
- for (i=0; i<16; i++)
- ns83820_mii_write_bit(dev, (data >> (15 - i)) & 1);
-
- return data;
-}
-
-static void ns83820_probe_phy(struct net_device *ndev)
-{
- struct ns83820 *dev = PRIV(ndev);
- static int first;
- int i;
-#define MII_PHYIDR1 0x02
-#define MII_PHYIDR2 0x03
-
-#if 0
- if (!first) {
- unsigned tmp;
- ns83820_mii_read_reg(dev, 1, 0x09);
- ns83820_mii_write_reg(dev, 1, 0x10, 0x0d3e);
-
- tmp = ns83820_mii_read_reg(dev, 1, 0x00);
- ns83820_mii_write_reg(dev, 1, 0x00, tmp | 0x8000);
- udelay(1300);
- ns83820_mii_read_reg(dev, 1, 0x09);
- }
-#endif
- first = 1;
-
- for (i=1; i<2; i++) {
- int j;
- unsigned a, b;
- a = ns83820_mii_read_reg(dev, i, MII_PHYIDR1);
- b = ns83820_mii_read_reg(dev, i, MII_PHYIDR2);
-
- //printk("%s: phy %d: 0x%04x 0x%04x\n",
- // ndev->name, i, a, b);
-
- for (j=0; j<0x16; j+=4) {
- dprintk("%s: [0x%02x] %04x %04x %04x %04x\n",
- ndev->name, j,
- ns83820_mii_read_reg(dev, i, 0 + j),
- ns83820_mii_read_reg(dev, i, 1 + j),
- ns83820_mii_read_reg(dev, i, 2 + j),
- ns83820_mii_read_reg(dev, i, 3 + j)
- );
- }
- }
- {
- unsigned a, b;
- /* read firmware version: memory addr is 0x8402 and 0x8403 */
- ns83820_mii_write_reg(dev, 1, 0x16, 0x000d);
- ns83820_mii_write_reg(dev, 1, 0x1e, 0x810e);
- a = ns83820_mii_read_reg(dev, 1, 0x1d);
-
- ns83820_mii_write_reg(dev, 1, 0x16, 0x000d);
- ns83820_mii_write_reg(dev, 1, 0x1e, 0x810e);
- b = ns83820_mii_read_reg(dev, 1, 0x1d);
- dprintk("version: 0x%04x 0x%04x\n", a, b);
- }
-}
-#endif
-
-static const struct net_device_ops netdev_ops = {
- .ndo_open = ns83820_open,
- .ndo_stop = ns83820_stop,
- .ndo_start_xmit = ns83820_hard_start_xmit,
- .ndo_get_stats = ns83820_get_stats,
- .ndo_change_mtu = ns83820_change_mtu,
- .ndo_set_multicast_list = ns83820_set_multicast,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_tx_timeout = ns83820_tx_timeout,
-};
-
-static int __devinit ns83820_init_one(struct pci_dev *pci_dev,
- const struct pci_device_id *id)
-{
- struct net_device *ndev;
- struct ns83820 *dev;
- long addr;
- int err;
- int using_dac = 0;
-
- /* See if we can set the dma mask early on; failure is fatal. */
- if (sizeof(dma_addr_t) == 8 &&
- !pci_set_dma_mask(pci_dev, DMA_BIT_MASK(64))) {
- using_dac = 1;
- } else if (!pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32))) {
- using_dac = 0;
- } else {
- dev_warn(&pci_dev->dev, "pci_set_dma_mask failed!\n");
- return -ENODEV;
- }
-
- ndev = alloc_etherdev(sizeof(struct ns83820));
- err = -ENOMEM;
- if (!ndev)
- goto out;
-
- dev = PRIV(ndev);
- dev->ndev = ndev;
-
- spin_lock_init(&dev->rx_info.lock);
- spin_lock_init(&dev->tx_lock);
- spin_lock_init(&dev->misc_lock);
- dev->pci_dev = pci_dev;
-
- SET_NETDEV_DEV(ndev, &pci_dev->dev);
-
- INIT_WORK(&dev->tq_refill, queue_refill);
- tasklet_init(&dev->rx_tasklet, rx_action, (unsigned long)ndev);
-
- err = pci_enable_device(pci_dev);
- if (err) {
- dev_info(&pci_dev->dev, "pci_enable_dev failed: %d\n", err);
- goto out_free;
- }
-
- pci_set_master(pci_dev);
- addr = pci_resource_start(pci_dev, 1);
- dev->base = ioremap_nocache(addr, PAGE_SIZE);
- dev->tx_descs = pci_alloc_consistent(pci_dev,
- 4 * DESC_SIZE * NR_TX_DESC, &dev->tx_phy_descs);
- dev->rx_info.descs = pci_alloc_consistent(pci_dev,
- 4 * DESC_SIZE * NR_RX_DESC, &dev->rx_info.phy_descs);
- err = -ENOMEM;
- if (!dev->base || !dev->tx_descs || !dev->rx_info.descs)
- goto out_disable;
-
- dprintk("%p: %08lx %p: %08lx\n",
- dev->tx_descs, (long)dev->tx_phy_descs,
- dev->rx_info.descs, (long)dev->rx_info.phy_descs);
-
- ns83820_disable_interrupts(dev);
-
- dev->IMR_cache = 0;
-
- err = request_irq(pci_dev->irq, ns83820_irq, IRQF_SHARED,
- DRV_NAME, ndev);
- if (err) {
- dev_info(&pci_dev->dev, "unable to register irq %d, err %d\n",
- pci_dev->irq, err);
- goto out_disable;
- }
-
- /*
- * FIXME: we are holding rtnl_lock() over obscenely long area only
- * because some of the setup code uses dev->name. It's Wrong(tm) -
- * we should be using driver-specific names for all that stuff.
- * For now that will do, but we really need to come back and kill
- * most of the dev_alloc_name() users later.
- */
- rtnl_lock();
- err = dev_alloc_name(ndev, ndev->name);
- if (err < 0) {
- dev_info(&pci_dev->dev, "unable to get netdev name: %d\n", err);
- goto out_free_irq;
- }
-
- printk("%s: ns83820.c: 0x22c: %08x, subsystem: %04x:%04x\n",
- ndev->name, le32_to_cpu(readl(dev->base + 0x22c)),
- pci_dev->subsystem_vendor, pci_dev->subsystem_device);
-
- ndev->netdev_ops = &netdev_ops;
- SET_ETHTOOL_OPS(ndev, &ops);
- ndev->watchdog_timeo = 5 * HZ;
- pci_set_drvdata(pci_dev, ndev);
-
- ns83820_do_reset(dev, CR_RST);
-
- /* Must reset the ram bist before running it */
- writel(PTSCR_RBIST_RST, dev->base + PTSCR);
- ns83820_run_bist(ndev, "sram bist", PTSCR_RBIST_EN,
- PTSCR_RBIST_DONE, PTSCR_RBIST_FAIL);
- ns83820_run_bist(ndev, "eeprom bist", PTSCR_EEBIST_EN, 0,
- PTSCR_EEBIST_FAIL);
- ns83820_run_bist(ndev, "eeprom load", PTSCR_EELOAD_EN, 0, 0);
-
- /* I love config registers */
- dev->CFG_cache = readl(dev->base + CFG);
-
- if ((dev->CFG_cache & CFG_PCI64_DET)) {
- printk(KERN_INFO "%s: detected 64 bit PCI data bus.\n",
- ndev->name);
- /*dev->CFG_cache |= CFG_DATA64_EN;*/
- if (!(dev->CFG_cache & CFG_DATA64_EN))
- printk(KERN_INFO "%s: EEPROM did not enable 64 bit bus. Disabled.\n",
- ndev->name);
- } else
- dev->CFG_cache &= ~(CFG_DATA64_EN);
-
- dev->CFG_cache &= (CFG_TBI_EN | CFG_MRM_DIS | CFG_MWI_DIS |
- CFG_T64ADDR | CFG_DATA64_EN | CFG_EXT_125 |
- CFG_M64ADDR);
- dev->CFG_cache |= CFG_PINT_DUPSTS | CFG_PINT_LNKSTS | CFG_PINT_SPDSTS |
- CFG_EXTSTS_EN | CFG_EXD | CFG_PESEL;
- dev->CFG_cache |= CFG_REQALG;
- dev->CFG_cache |= CFG_POW;
- dev->CFG_cache |= CFG_TMRTEST;
-
- /* When compiled with 64 bit addressing, we must always enable
- * the 64 bit descriptor format.
- */
- if (sizeof(dma_addr_t) == 8)
- dev->CFG_cache |= CFG_M64ADDR;
- if (using_dac)
- dev->CFG_cache |= CFG_T64ADDR;
-
- /* Big endian mode does not seem to do what the docs suggest */
- dev->CFG_cache &= ~CFG_BEM;
-
- /* setup optical transceiver if we have one */
- if (dev->CFG_cache & CFG_TBI_EN) {
- printk(KERN_INFO "%s: enabling optical transceiver\n",
- ndev->name);
- writel(readl(dev->base + GPIOR) | 0x3e8, dev->base + GPIOR);
-
- /* setup auto negotiation feature advertisement */
- writel(readl(dev->base + TANAR)
- | TANAR_HALF_DUP | TANAR_FULL_DUP,
- dev->base + TANAR);
-
- /* start auto negotiation */
- writel(TBICR_MR_AN_ENABLE | TBICR_MR_RESTART_AN,
- dev->base + TBICR);
- writel(TBICR_MR_AN_ENABLE, dev->base + TBICR);
- dev->linkstate = LINK_AUTONEGOTIATE;
-
- dev->CFG_cache |= CFG_MODE_1000;
- }
-
- writel(dev->CFG_cache, dev->base + CFG);
- dprintk("CFG: %08x\n", dev->CFG_cache);
-
- if (reset_phy) {
- printk(KERN_INFO "%s: resetting phy\n", ndev->name);
- writel(dev->CFG_cache | CFG_PHY_RST, dev->base + CFG);
- msleep(10);
- writel(dev->CFG_cache, dev->base + CFG);
- }
-
-#if 0 /* Huh? This sets the PCI latency register. Should be done via
- * the PCI layer. FIXME.
- */
- if (readl(dev->base + SRR))
- writel(readl(dev->base+0x20c) | 0xfe00, dev->base + 0x20c);
-#endif
-
- /* Note! The DMA burst size interacts with packet
- * transmission, such that the largest packet that
- * can be transmitted is 8192 - FLTH - burst size.
- * If only the transmit fifo was larger...
- */
- /* Ramit : 1024 DMA is not a good idea, it ends up banging
- * some DELL and COMPAQ SMP systems */
- writel(TXCFG_CSI | TXCFG_HBI | TXCFG_ATP | TXCFG_MXDMA512
- | ((1600 / 32) * 0x100),
- dev->base + TXCFG);
-
- /* Flush the interrupt holdoff timer */
- writel(0x000, dev->base + IHR);
- writel(0x100, dev->base + IHR);
- writel(0x000, dev->base + IHR);
-
- /* Set Rx to full duplex, don't accept runt, errored, long or length
- * range errored packets. Use 512 byte DMA.
- */
- /* Ramit : 1024 DMA is not a good idea, it ends up banging
- * some DELL and COMPAQ SMP systems
- * Turn on ALP, only we are accpeting Jumbo Packets */
- writel(RXCFG_AEP | RXCFG_ARP | RXCFG_AIRL | RXCFG_RX_FD
- | RXCFG_STRIPCRC
- //| RXCFG_ALP
- | (RXCFG_MXDMA512) | 0, dev->base + RXCFG);
-
- /* Disable priority queueing */
- writel(0, dev->base + PQCR);
-
- /* Enable IP checksum validation and detetion of VLAN headers.
- * Note: do not set the reject options as at least the 0x102
- * revision of the chip does not properly accept IP fragments
- * at least for UDP.
- */
- /* Ramit : Be sure to turn on RXCFG_ARP if VLAN's are enabled, since
- * the MAC it calculates the packetsize AFTER stripping the VLAN
- * header, and if a VLAN Tagged packet of 64 bytes is received (like
- * a ping with a VLAN header) then the card, strips the 4 byte VLAN
- * tag and then checks the packet size, so if RXCFG_ARP is not enabled,
- * it discrards it!. These guys......
- * also turn on tag stripping if hardware acceleration is enabled
- */
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
-#define VRCR_INIT_VALUE (VRCR_IPEN|VRCR_VTDEN|VRCR_VTREN)
-#else
-#define VRCR_INIT_VALUE (VRCR_IPEN|VRCR_VTDEN)
-#endif
- writel(VRCR_INIT_VALUE, dev->base + VRCR);
-
- /* Enable per-packet TCP/UDP/IP checksumming
- * and per packet vlan tag insertion if
- * vlan hardware acceleration is enabled
- */
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
-#define VTCR_INIT_VALUE (VTCR_PPCHK|VTCR_VPPTI)
-#else
-#define VTCR_INIT_VALUE VTCR_PPCHK
-#endif
- writel(VTCR_INIT_VALUE, dev->base + VTCR);
-
- /* Ramit : Enable async and sync pause frames */
- /* writel(0, dev->base + PCR); */
- writel((PCR_PS_MCAST | PCR_PS_DA | PCR_PSEN | PCR_FFLO_4K |
- PCR_FFHI_8K | PCR_STLO_4 | PCR_STHI_8 | PCR_PAUSE_CNT),
- dev->base + PCR);
-
- /* Disable Wake On Lan */
- writel(0, dev->base + WCSR);
-
- ns83820_getmac(dev, ndev->dev_addr);
-
- /* Yes, we support dumb IP checksum on transmit */
- ndev->features |= NETIF_F_SG;
- ndev->features |= NETIF_F_IP_CSUM;
-
-#ifdef NS83820_VLAN_ACCEL_SUPPORT
- /* We also support hardware vlan acceleration */
- ndev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
-#endif
-
- if (using_dac) {
- printk(KERN_INFO "%s: using 64 bit addressing.\n",
- ndev->name);
- ndev->features |= NETIF_F_HIGHDMA;
- }
-
- printk(KERN_INFO "%s: ns83820 v" VERSION ": DP83820 v%u.%u: %pM io=0x%08lx irq=%d f=%s\n",
- ndev->name,
- (unsigned)readl(dev->base + SRR) >> 8,
- (unsigned)readl(dev->base + SRR) & 0xff,
- ndev->dev_addr, addr, pci_dev->irq,
- (ndev->features & NETIF_F_HIGHDMA) ? "h,sg" : "sg"
- );
-
-#ifdef PHY_CODE_IS_FINISHED
- ns83820_probe_phy(ndev);
-#endif
-
- err = register_netdevice(ndev);
- if (err) {
- printk(KERN_INFO "ns83820: unable to register netdev: %d\n", err);
- goto out_cleanup;
- }
- rtnl_unlock();
-
- return 0;
-
-out_cleanup:
- ns83820_disable_interrupts(dev); /* paranoia */
-out_free_irq:
- rtnl_unlock();
- free_irq(pci_dev->irq, ndev);
-out_disable:
- if (dev->base)
- iounmap(dev->base);
- pci_free_consistent(pci_dev, 4 * DESC_SIZE * NR_TX_DESC, dev->tx_descs, dev->tx_phy_descs);
- pci_free_consistent(pci_dev, 4 * DESC_SIZE * NR_RX_DESC, dev->rx_info.descs, dev->rx_info.phy_descs);
- pci_disable_device(pci_dev);
-out_free:
- free_netdev(ndev);
- pci_set_drvdata(pci_dev, NULL);
-out:
- return err;
-}
-
-static void __devexit ns83820_remove_one(struct pci_dev *pci_dev)
-{
- struct net_device *ndev = pci_get_drvdata(pci_dev);
- struct ns83820 *dev = PRIV(ndev); /* ok even if NULL */
-
- if (!ndev) /* paranoia */
- return;
-
- ns83820_disable_interrupts(dev); /* paranoia */
-
- unregister_netdev(ndev);
- free_irq(dev->pci_dev->irq, ndev);
- iounmap(dev->base);
- pci_free_consistent(dev->pci_dev, 4 * DESC_SIZE * NR_TX_DESC,
- dev->tx_descs, dev->tx_phy_descs);
- pci_free_consistent(dev->pci_dev, 4 * DESC_SIZE * NR_RX_DESC,
- dev->rx_info.descs, dev->rx_info.phy_descs);
- pci_disable_device(dev->pci_dev);
- free_netdev(ndev);
- pci_set_drvdata(pci_dev, NULL);
-}
-
-static DEFINE_PCI_DEVICE_TABLE(ns83820_pci_tbl) = {
- { 0x100b, 0x0022, PCI_ANY_ID, PCI_ANY_ID, 0, .driver_data = 0, },
- { 0, },
-};
-
-static struct pci_driver driver = {
- .name = "ns83820",
- .id_table = ns83820_pci_tbl,
- .probe = ns83820_init_one,
- .remove = __devexit_p(ns83820_remove_one),
-#if 0 /* FIXME: implement */
- .suspend = ,
- .resume = ,
-#endif
-};
-
-
-static int __init ns83820_init(void)
-{
- printk(KERN_INFO "ns83820.c: National Semiconductor DP83820 10/100/1000 driver.\n");
- return pci_register_driver(&driver);
-}
-
-static void __exit ns83820_exit(void)
-{
- pci_unregister_driver(&driver);
-}
-
-MODULE_AUTHOR("Benjamin LaHaise <bcrl@kvack.org>");
-MODULE_DESCRIPTION("National Semiconductor DP83820 10/100/1000 driver");
-MODULE_LICENSE("GPL");
-
-MODULE_DEVICE_TABLE(pci, ns83820_pci_tbl);
-
-module_param(lnksts, int, 0);
-MODULE_PARM_DESC(lnksts, "Polarity of LNKSTS bit");
-
-module_param(ihr, int, 0);
-MODULE_PARM_DESC(ihr, "Time in 100 us increments to delay interrupts (range 0-127)");
-
-module_param(reset_phy, int, 0);
-MODULE_PARM_DESC(reset_phy, "Set to 1 to reset the PHY on startup");
-
-module_init(ns83820_init);
-module_exit(ns83820_exit);
+++ /dev/null
-/*
- * sonic.c
- *
- * (C) 2005 Finn Thain
- *
- * Converted to DMA API, added zero-copy buffer handling, and
- * (from the mac68k project) introduced dhd's support for 16-bit cards.
- *
- * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
- *
- * This driver is based on work from Andreas Busse, but most of
- * the code is rewritten.
- *
- * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
- *
- * Core code included by system sonic drivers
- *
- * And... partially rewritten again by David Huggins-Daines in order
- * to cope with screwed up Macintosh NICs that may or may not use
- * 16-bit DMA.
- *
- * (C) 1999 David Huggins-Daines <dhd@debian.org>
- *
- */
-
-/*
- * Sources: Olivetti M700-10 Risc Personal Computer hardware handbook,
- * National Semiconductors data sheet for the DP83932B Sonic Ethernet
- * controller, and the files "8390.c" and "skeleton.c" in this directory.
- *
- * Additional sources: Nat Semi data sheet for the DP83932C and Nat Semi
- * Application Note AN-746, the files "lance.c" and "ibmlana.c". See also
- * the NetBSD file "sys/arch/mac68k/dev/if_sn.c".
- */
-
-
-
-/*
- * Open/initialize the SONIC controller.
- *
- * This routine should set everything up anew at each open, even
- * registers that "should" only need to be set once at boot, so that
- * there is non-reboot way to recover if something goes wrong.
- */
-static int sonic_open(struct net_device *dev)
-{
- struct sonic_local *lp = netdev_priv(dev);
- int i;
-
- if (sonic_debug > 2)
- printk("sonic_open: initializing sonic driver.\n");
-
- for (i = 0; i < SONIC_NUM_RRS; i++) {
- struct sk_buff *skb = dev_alloc_skb(SONIC_RBSIZE + 2);
- if (skb == NULL) {
- while(i > 0) { /* free any that were allocated successfully */
- i--;
- dev_kfree_skb(lp->rx_skb[i]);
- lp->rx_skb[i] = NULL;
- }
- printk(KERN_ERR "%s: couldn't allocate receive buffers\n",
- dev->name);
- return -ENOMEM;
- }
- /* align IP header unless DMA requires otherwise */
- if (SONIC_BUS_SCALE(lp->dma_bitmode) == 2)
- skb_reserve(skb, 2);
- lp->rx_skb[i] = skb;
- }
-
- for (i = 0; i < SONIC_NUM_RRS; i++) {
- dma_addr_t laddr = dma_map_single(lp->device, skb_put(lp->rx_skb[i], SONIC_RBSIZE),
- SONIC_RBSIZE, DMA_FROM_DEVICE);
- if (!laddr) {
- while(i > 0) { /* free any that were mapped successfully */
- i--;
- dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE);
- lp->rx_laddr[i] = (dma_addr_t)0;
- }
- for (i = 0; i < SONIC_NUM_RRS; i++) {
- dev_kfree_skb(lp->rx_skb[i]);
- lp->rx_skb[i] = NULL;
- }
- printk(KERN_ERR "%s: couldn't map rx DMA buffers\n",
- dev->name);
- return -ENOMEM;
- }
- lp->rx_laddr[i] = laddr;
- }
-
- /*
- * Initialize the SONIC
- */
- sonic_init(dev);
-
- netif_start_queue(dev);
-
- if (sonic_debug > 2)
- printk("sonic_open: Initialization done.\n");
-
- return 0;
-}
-
-
-/*
- * Close the SONIC device
- */
-static int sonic_close(struct net_device *dev)
-{
- struct sonic_local *lp = netdev_priv(dev);
- int i;
-
- if (sonic_debug > 2)
- printk("sonic_close\n");
-
- netif_stop_queue(dev);
-
- /*
- * stop the SONIC, disable interrupts
- */
- SONIC_WRITE(SONIC_IMR, 0);
- SONIC_WRITE(SONIC_ISR, 0x7fff);
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
-
- /* unmap and free skbs that haven't been transmitted */
- for (i = 0; i < SONIC_NUM_TDS; i++) {
- if(lp->tx_laddr[i]) {
- dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE);
- lp->tx_laddr[i] = (dma_addr_t)0;
- }
- if(lp->tx_skb[i]) {
- dev_kfree_skb(lp->tx_skb[i]);
- lp->tx_skb[i] = NULL;
- }
- }
-
- /* unmap and free the receive buffers */
- for (i = 0; i < SONIC_NUM_RRS; i++) {
- if(lp->rx_laddr[i]) {
- dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE);
- lp->rx_laddr[i] = (dma_addr_t)0;
- }
- if(lp->rx_skb[i]) {
- dev_kfree_skb(lp->rx_skb[i]);
- lp->rx_skb[i] = NULL;
- }
- }
-
- return 0;
-}
-
-static void sonic_tx_timeout(struct net_device *dev)
-{
- struct sonic_local *lp = netdev_priv(dev);
- int i;
- /*
- * put the Sonic into software-reset mode and
- * disable all interrupts before releasing DMA buffers
- */
- SONIC_WRITE(SONIC_IMR, 0);
- SONIC_WRITE(SONIC_ISR, 0x7fff);
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
- /* We could resend the original skbs. Easier to re-initialise. */
- for (i = 0; i < SONIC_NUM_TDS; i++) {
- if(lp->tx_laddr[i]) {
- dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE);
- lp->tx_laddr[i] = (dma_addr_t)0;
- }
- if(lp->tx_skb[i]) {
- dev_kfree_skb(lp->tx_skb[i]);
- lp->tx_skb[i] = NULL;
- }
- }
- /* Try to restart the adaptor. */
- sonic_init(dev);
- lp->stats.tx_errors++;
- dev->trans_start = jiffies; /* prevent tx timeout */
- netif_wake_queue(dev);
-}
-
-/*
- * transmit packet
- *
- * Appends new TD during transmission thus avoiding any TX interrupts
- * until we run out of TDs.
- * This routine interacts closely with the ISR in that it may,
- * set tx_skb[i]
- * reset the status flags of the new TD
- * set and reset EOL flags
- * stop the tx queue
- * The ISR interacts with this routine in various ways. It may,
- * reset tx_skb[i]
- * test the EOL and status flags of the TDs
- * wake the tx queue
- * Concurrently with all of this, the SONIC is potentially writing to
- * the status flags of the TDs.
- * Until some mutual exclusion is added, this code will not work with SMP. However,
- * MIPS Jazz machines and m68k Macs were all uni-processor machines.
- */
-
-static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
-{
- struct sonic_local *lp = netdev_priv(dev);
- dma_addr_t laddr;
- int length;
- int entry = lp->next_tx;
-
- if (sonic_debug > 2)
- printk("sonic_send_packet: skb=%p, dev=%p\n", skb, dev);
-
- length = skb->len;
- if (length < ETH_ZLEN) {
- if (skb_padto(skb, ETH_ZLEN))
- return NETDEV_TX_OK;
- length = ETH_ZLEN;
- }
-
- /*
- * Map the packet data into the logical DMA address space
- */
-
- laddr = dma_map_single(lp->device, skb->data, length, DMA_TO_DEVICE);
- if (!laddr) {
- printk(KERN_ERR "%s: failed to map tx DMA buffer.\n", dev->name);
- dev_kfree_skb(skb);
- return NETDEV_TX_BUSY;
- }
-
- sonic_tda_put(dev, entry, SONIC_TD_STATUS, 0); /* clear status */
- sonic_tda_put(dev, entry, SONIC_TD_FRAG_COUNT, 1); /* single fragment */
- sonic_tda_put(dev, entry, SONIC_TD_PKTSIZE, length); /* length of packet */
- sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_L, laddr & 0xffff);
- sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_H, laddr >> 16);
- sonic_tda_put(dev, entry, SONIC_TD_FRAG_SIZE, length);
- sonic_tda_put(dev, entry, SONIC_TD_LINK,
- sonic_tda_get(dev, entry, SONIC_TD_LINK) | SONIC_EOL);
-
- /*
- * Must set tx_skb[entry] only after clearing status, and
- * before clearing EOL and before stopping queue
- */
- wmb();
- lp->tx_len[entry] = length;
- lp->tx_laddr[entry] = laddr;
- lp->tx_skb[entry] = skb;
-
- wmb();
- sonic_tda_put(dev, lp->eol_tx, SONIC_TD_LINK,
- sonic_tda_get(dev, lp->eol_tx, SONIC_TD_LINK) & ~SONIC_EOL);
- lp->eol_tx = entry;
-
- lp->next_tx = (entry + 1) & SONIC_TDS_MASK;
- if (lp->tx_skb[lp->next_tx] != NULL) {
- /* The ring is full, the ISR has yet to process the next TD. */
- if (sonic_debug > 3)
- printk("%s: stopping queue\n", dev->name);
- netif_stop_queue(dev);
- /* after this packet, wait for ISR to free up some TDAs */
- } else netif_start_queue(dev);
-
- if (sonic_debug > 2)
- printk("sonic_send_packet: issuing Tx command\n");
-
- SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP);
-
- return NETDEV_TX_OK;
-}
-
-/*
- * The typical workload of the driver:
- * Handle the network interface interrupts.
- */
-static irqreturn_t sonic_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct sonic_local *lp = netdev_priv(dev);
- int status;
-
- if (!(status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT))
- return IRQ_NONE;
-
- do {
- if (status & SONIC_INT_PKTRX) {
- if (sonic_debug > 2)
- printk("%s: packet rx\n", dev->name);
- sonic_rx(dev); /* got packet(s) */
- SONIC_WRITE(SONIC_ISR, SONIC_INT_PKTRX); /* clear the interrupt */
- }
-
- if (status & SONIC_INT_TXDN) {
- int entry = lp->cur_tx;
- int td_status;
- int freed_some = 0;
-
- /* At this point, cur_tx is the index of a TD that is one of:
- * unallocated/freed (status set & tx_skb[entry] clear)
- * allocated and sent (status set & tx_skb[entry] set )
- * allocated and not yet sent (status clear & tx_skb[entry] set )
- * still being allocated by sonic_send_packet (status clear & tx_skb[entry] clear)
- */
-
- if (sonic_debug > 2)
- printk("%s: tx done\n", dev->name);
-
- while (lp->tx_skb[entry] != NULL) {
- if ((td_status = sonic_tda_get(dev, entry, SONIC_TD_STATUS)) == 0)
- break;
-
- if (td_status & 0x0001) {
- lp->stats.tx_packets++;
- lp->stats.tx_bytes += sonic_tda_get(dev, entry, SONIC_TD_PKTSIZE);
- } else {
- lp->stats.tx_errors++;
- if (td_status & 0x0642)
- lp->stats.tx_aborted_errors++;
- if (td_status & 0x0180)
- lp->stats.tx_carrier_errors++;
- if (td_status & 0x0020)
- lp->stats.tx_window_errors++;
- if (td_status & 0x0004)
- lp->stats.tx_fifo_errors++;
- }
-
- /* We must free the original skb */
- dev_kfree_skb_irq(lp->tx_skb[entry]);
- lp->tx_skb[entry] = NULL;
- /* and unmap DMA buffer */
- dma_unmap_single(lp->device, lp->tx_laddr[entry], lp->tx_len[entry], DMA_TO_DEVICE);
- lp->tx_laddr[entry] = (dma_addr_t)0;
- freed_some = 1;
-
- if (sonic_tda_get(dev, entry, SONIC_TD_LINK) & SONIC_EOL) {
- entry = (entry + 1) & SONIC_TDS_MASK;
- break;
- }
- entry = (entry + 1) & SONIC_TDS_MASK;
- }
-
- if (freed_some || lp->tx_skb[entry] == NULL)
- netif_wake_queue(dev); /* The ring is no longer full */
- lp->cur_tx = entry;
- SONIC_WRITE(SONIC_ISR, SONIC_INT_TXDN); /* clear the interrupt */
- }
-
- /*
- * check error conditions
- */
- if (status & SONIC_INT_RFO) {
- if (sonic_debug > 1)
- printk("%s: rx fifo overrun\n", dev->name);
- lp->stats.rx_fifo_errors++;
- SONIC_WRITE(SONIC_ISR, SONIC_INT_RFO); /* clear the interrupt */
- }
- if (status & SONIC_INT_RDE) {
- if (sonic_debug > 1)
- printk("%s: rx descriptors exhausted\n", dev->name);
- lp->stats.rx_dropped++;
- SONIC_WRITE(SONIC_ISR, SONIC_INT_RDE); /* clear the interrupt */
- }
- if (status & SONIC_INT_RBAE) {
- if (sonic_debug > 1)
- printk("%s: rx buffer area exceeded\n", dev->name);
- lp->stats.rx_dropped++;
- SONIC_WRITE(SONIC_ISR, SONIC_INT_RBAE); /* clear the interrupt */
- }
-
- /* counter overruns; all counters are 16bit wide */
- if (status & SONIC_INT_FAE) {
- lp->stats.rx_frame_errors += 65536;
- SONIC_WRITE(SONIC_ISR, SONIC_INT_FAE); /* clear the interrupt */
- }
- if (status & SONIC_INT_CRC) {
- lp->stats.rx_crc_errors += 65536;
- SONIC_WRITE(SONIC_ISR, SONIC_INT_CRC); /* clear the interrupt */
- }
- if (status & SONIC_INT_MP) {
- lp->stats.rx_missed_errors += 65536;
- SONIC_WRITE(SONIC_ISR, SONIC_INT_MP); /* clear the interrupt */
- }
-
- /* transmit error */
- if (status & SONIC_INT_TXER) {
- if ((SONIC_READ(SONIC_TCR) & SONIC_TCR_FU) && (sonic_debug > 2))
- printk(KERN_ERR "%s: tx fifo underrun\n", dev->name);
- SONIC_WRITE(SONIC_ISR, SONIC_INT_TXER); /* clear the interrupt */
- }
-
- /* bus retry */
- if (status & SONIC_INT_BR) {
- printk(KERN_ERR "%s: Bus retry occurred! Device interrupt disabled.\n",
- dev->name);
- /* ... to help debug DMA problems causing endless interrupts. */
- /* Bounce the eth interface to turn on the interrupt again. */
- SONIC_WRITE(SONIC_IMR, 0);
- SONIC_WRITE(SONIC_ISR, SONIC_INT_BR); /* clear the interrupt */
- }
-
- /* load CAM done */
- if (status & SONIC_INT_LCD)
- SONIC_WRITE(SONIC_ISR, SONIC_INT_LCD); /* clear the interrupt */
- } while((status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT));
- return IRQ_HANDLED;
-}
-
-/*
- * We have a good packet(s), pass it/them up the network stack.
- */
-static void sonic_rx(struct net_device *dev)
-{
- struct sonic_local *lp = netdev_priv(dev);
- int status;
- int entry = lp->cur_rx;
-
- while (sonic_rda_get(dev, entry, SONIC_RD_IN_USE) == 0) {
- struct sk_buff *used_skb;
- struct sk_buff *new_skb;
- dma_addr_t new_laddr;
- u16 bufadr_l;
- u16 bufadr_h;
- int pkt_len;
-
- status = sonic_rda_get(dev, entry, SONIC_RD_STATUS);
- if (status & SONIC_RCR_PRX) {
- /* Malloc up new buffer. */
- new_skb = dev_alloc_skb(SONIC_RBSIZE + 2);
- if (new_skb == NULL) {
- printk(KERN_ERR "%s: Memory squeeze, dropping packet.\n", dev->name);
- lp->stats.rx_dropped++;
- break;
- }
- /* provide 16 byte IP header alignment unless DMA requires otherwise */
- if(SONIC_BUS_SCALE(lp->dma_bitmode) == 2)
- skb_reserve(new_skb, 2);
-
- new_laddr = dma_map_single(lp->device, skb_put(new_skb, SONIC_RBSIZE),
- SONIC_RBSIZE, DMA_FROM_DEVICE);
- if (!new_laddr) {
- dev_kfree_skb(new_skb);
- printk(KERN_ERR "%s: Failed to map rx buffer, dropping packet.\n", dev->name);
- lp->stats.rx_dropped++;
- break;
- }
-
- /* now we have a new skb to replace it, pass the used one up the stack */
- dma_unmap_single(lp->device, lp->rx_laddr[entry], SONIC_RBSIZE, DMA_FROM_DEVICE);
- used_skb = lp->rx_skb[entry];
- pkt_len = sonic_rda_get(dev, entry, SONIC_RD_PKTLEN);
- skb_trim(used_skb, pkt_len);
- used_skb->protocol = eth_type_trans(used_skb, dev);
- netif_rx(used_skb);
- lp->stats.rx_packets++;
- lp->stats.rx_bytes += pkt_len;
-
- /* and insert the new skb */
- lp->rx_laddr[entry] = new_laddr;
- lp->rx_skb[entry] = new_skb;
-
- bufadr_l = (unsigned long)new_laddr & 0xffff;
- bufadr_h = (unsigned long)new_laddr >> 16;
- sonic_rra_put(dev, entry, SONIC_RR_BUFADR_L, bufadr_l);
- sonic_rra_put(dev, entry, SONIC_RR_BUFADR_H, bufadr_h);
- } else {
- /* This should only happen, if we enable accepting broken packets. */
- lp->stats.rx_errors++;
- if (status & SONIC_RCR_FAER)
- lp->stats.rx_frame_errors++;
- if (status & SONIC_RCR_CRCR)
- lp->stats.rx_crc_errors++;
- }
- if (status & SONIC_RCR_LPKT) {
- /*
- * this was the last packet out of the current receive buffer
- * give the buffer back to the SONIC
- */
- lp->cur_rwp += SIZEOF_SONIC_RR * SONIC_BUS_SCALE(lp->dma_bitmode);
- if (lp->cur_rwp >= lp->rra_end) lp->cur_rwp = lp->rra_laddr & 0xffff;
- SONIC_WRITE(SONIC_RWP, lp->cur_rwp);
- if (SONIC_READ(SONIC_ISR) & SONIC_INT_RBE) {
- if (sonic_debug > 2)
- printk("%s: rx buffer exhausted\n", dev->name);
- SONIC_WRITE(SONIC_ISR, SONIC_INT_RBE); /* clear the flag */
- }
- } else
- printk(KERN_ERR "%s: rx desc without RCR_LPKT. Shouldn't happen !?\n",
- dev->name);
- /*
- * give back the descriptor
- */
- sonic_rda_put(dev, entry, SONIC_RD_LINK,
- sonic_rda_get(dev, entry, SONIC_RD_LINK) | SONIC_EOL);
- sonic_rda_put(dev, entry, SONIC_RD_IN_USE, 1);
- sonic_rda_put(dev, lp->eol_rx, SONIC_RD_LINK,
- sonic_rda_get(dev, lp->eol_rx, SONIC_RD_LINK) & ~SONIC_EOL);
- lp->eol_rx = entry;
- lp->cur_rx = entry = (entry + 1) & SONIC_RDS_MASK;
- }
- /*
- * If any worth-while packets have been received, netif_rx()
- * has done a mark_bh(NET_BH) for us and will work on them
- * when we get to the bottom-half routine.
- */
-}
-
-
-/*
- * Get the current statistics.
- * This may be called with the device open or closed.
- */
-static struct net_device_stats *sonic_get_stats(struct net_device *dev)
-{
- struct sonic_local *lp = netdev_priv(dev);
-
- /* read the tally counter from the SONIC and reset them */
- lp->stats.rx_crc_errors += SONIC_READ(SONIC_CRCT);
- SONIC_WRITE(SONIC_CRCT, 0xffff);
- lp->stats.rx_frame_errors += SONIC_READ(SONIC_FAET);
- SONIC_WRITE(SONIC_FAET, 0xffff);
- lp->stats.rx_missed_errors += SONIC_READ(SONIC_MPT);
- SONIC_WRITE(SONIC_MPT, 0xffff);
-
- return &lp->stats;
-}
-
-
-/*
- * Set or clear the multicast filter for this adaptor.
- */
-static void sonic_multicast_list(struct net_device *dev)
-{
- struct sonic_local *lp = netdev_priv(dev);
- unsigned int rcr;
- struct netdev_hw_addr *ha;
- unsigned char *addr;
- int i;
-
- rcr = SONIC_READ(SONIC_RCR) & ~(SONIC_RCR_PRO | SONIC_RCR_AMC);
- rcr |= SONIC_RCR_BRD; /* accept broadcast packets */
-
- if (dev->flags & IFF_PROMISC) { /* set promiscuous mode */
- rcr |= SONIC_RCR_PRO;
- } else {
- if ((dev->flags & IFF_ALLMULTI) ||
- (netdev_mc_count(dev) > 15)) {
- rcr |= SONIC_RCR_AMC;
- } else {
- if (sonic_debug > 2)
- printk("sonic_multicast_list: mc_count %d\n",
- netdev_mc_count(dev));
- sonic_set_cam_enable(dev, 1); /* always enable our own address */
- i = 1;
- netdev_for_each_mc_addr(ha, dev) {
- addr = ha->addr;
- sonic_cda_put(dev, i, SONIC_CD_CAP0, addr[1] << 8 | addr[0]);
- sonic_cda_put(dev, i, SONIC_CD_CAP1, addr[3] << 8 | addr[2]);
- sonic_cda_put(dev, i, SONIC_CD_CAP2, addr[5] << 8 | addr[4]);
- sonic_set_cam_enable(dev, sonic_get_cam_enable(dev) | (1 << i));
- i++;
- }
- SONIC_WRITE(SONIC_CDC, 16);
- /* issue Load CAM command */
- SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff);
- SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM);
- }
- }
-
- if (sonic_debug > 2)
- printk("sonic_multicast_list: setting RCR=%x\n", rcr);
-
- SONIC_WRITE(SONIC_RCR, rcr);
-}
-
-
-/*
- * Initialize the SONIC ethernet controller.
- */
-static int sonic_init(struct net_device *dev)
-{
- unsigned int cmd;
- struct sonic_local *lp = netdev_priv(dev);
- int i;
-
- /*
- * put the Sonic into software-reset mode and
- * disable all interrupts
- */
- SONIC_WRITE(SONIC_IMR, 0);
- SONIC_WRITE(SONIC_ISR, 0x7fff);
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
-
- /*
- * clear software reset flag, disable receiver, clear and
- * enable interrupts, then completely initialize the SONIC
- */
- SONIC_WRITE(SONIC_CMD, 0);
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RXDIS);
-
- /*
- * initialize the receive resource area
- */
- if (sonic_debug > 2)
- printk("sonic_init: initialize receive resource area\n");
-
- for (i = 0; i < SONIC_NUM_RRS; i++) {
- u16 bufadr_l = (unsigned long)lp->rx_laddr[i] & 0xffff;
- u16 bufadr_h = (unsigned long)lp->rx_laddr[i] >> 16;
- sonic_rra_put(dev, i, SONIC_RR_BUFADR_L, bufadr_l);
- sonic_rra_put(dev, i, SONIC_RR_BUFADR_H, bufadr_h);
- sonic_rra_put(dev, i, SONIC_RR_BUFSIZE_L, SONIC_RBSIZE >> 1);
- sonic_rra_put(dev, i, SONIC_RR_BUFSIZE_H, 0);
- }
-
- /* initialize all RRA registers */
- lp->rra_end = (lp->rra_laddr + SONIC_NUM_RRS * SIZEOF_SONIC_RR *
- SONIC_BUS_SCALE(lp->dma_bitmode)) & 0xffff;
- lp->cur_rwp = (lp->rra_laddr + (SONIC_NUM_RRS - 1) * SIZEOF_SONIC_RR *
- SONIC_BUS_SCALE(lp->dma_bitmode)) & 0xffff;
-
- SONIC_WRITE(SONIC_RSA, lp->rra_laddr & 0xffff);
- SONIC_WRITE(SONIC_REA, lp->rra_end);
- SONIC_WRITE(SONIC_RRP, lp->rra_laddr & 0xffff);
- SONIC_WRITE(SONIC_RWP, lp->cur_rwp);
- SONIC_WRITE(SONIC_URRA, lp->rra_laddr >> 16);
- SONIC_WRITE(SONIC_EOBC, (SONIC_RBSIZE >> 1) - (lp->dma_bitmode ? 2 : 1));
-
- /* load the resource pointers */
- if (sonic_debug > 3)
- printk("sonic_init: issuing RRRA command\n");
-
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RRRA);
- i = 0;
- while (i++ < 100) {
- if (SONIC_READ(SONIC_CMD) & SONIC_CR_RRRA)
- break;
- }
-
- if (sonic_debug > 2)
- printk("sonic_init: status=%x i=%d\n", SONIC_READ(SONIC_CMD), i);
-
- /*
- * Initialize the receive descriptors so that they
- * become a circular linked list, ie. let the last
- * descriptor point to the first again.
- */
- if (sonic_debug > 2)
- printk("sonic_init: initialize receive descriptors\n");
- for (i=0; i<SONIC_NUM_RDS; i++) {
- sonic_rda_put(dev, i, SONIC_RD_STATUS, 0);
- sonic_rda_put(dev, i, SONIC_RD_PKTLEN, 0);
- sonic_rda_put(dev, i, SONIC_RD_PKTPTR_L, 0);
- sonic_rda_put(dev, i, SONIC_RD_PKTPTR_H, 0);
- sonic_rda_put(dev, i, SONIC_RD_SEQNO, 0);
- sonic_rda_put(dev, i, SONIC_RD_IN_USE, 1);
- sonic_rda_put(dev, i, SONIC_RD_LINK,
- lp->rda_laddr +
- ((i+1) * SIZEOF_SONIC_RD * SONIC_BUS_SCALE(lp->dma_bitmode)));
- }
- /* fix last descriptor */
- sonic_rda_put(dev, SONIC_NUM_RDS - 1, SONIC_RD_LINK,
- (lp->rda_laddr & 0xffff) | SONIC_EOL);
- lp->eol_rx = SONIC_NUM_RDS - 1;
- lp->cur_rx = 0;
- SONIC_WRITE(SONIC_URDA, lp->rda_laddr >> 16);
- SONIC_WRITE(SONIC_CRDA, lp->rda_laddr & 0xffff);
-
- /*
- * initialize transmit descriptors
- */
- if (sonic_debug > 2)
- printk("sonic_init: initialize transmit descriptors\n");
- for (i = 0; i < SONIC_NUM_TDS; i++) {
- sonic_tda_put(dev, i, SONIC_TD_STATUS, 0);
- sonic_tda_put(dev, i, SONIC_TD_CONFIG, 0);
- sonic_tda_put(dev, i, SONIC_TD_PKTSIZE, 0);
- sonic_tda_put(dev, i, SONIC_TD_FRAG_COUNT, 0);
- sonic_tda_put(dev, i, SONIC_TD_LINK,
- (lp->tda_laddr & 0xffff) +
- (i + 1) * SIZEOF_SONIC_TD * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->tx_skb[i] = NULL;
- }
- /* fix last descriptor */
- sonic_tda_put(dev, SONIC_NUM_TDS - 1, SONIC_TD_LINK,
- (lp->tda_laddr & 0xffff));
-
- SONIC_WRITE(SONIC_UTDA, lp->tda_laddr >> 16);
- SONIC_WRITE(SONIC_CTDA, lp->tda_laddr & 0xffff);
- lp->cur_tx = lp->next_tx = 0;
- lp->eol_tx = SONIC_NUM_TDS - 1;
-
- /*
- * put our own address to CAM desc[0]
- */
- sonic_cda_put(dev, 0, SONIC_CD_CAP0, dev->dev_addr[1] << 8 | dev->dev_addr[0]);
- sonic_cda_put(dev, 0, SONIC_CD_CAP1, dev->dev_addr[3] << 8 | dev->dev_addr[2]);
- sonic_cda_put(dev, 0, SONIC_CD_CAP2, dev->dev_addr[5] << 8 | dev->dev_addr[4]);
- sonic_set_cam_enable(dev, 1);
-
- for (i = 0; i < 16; i++)
- sonic_cda_put(dev, i, SONIC_CD_ENTRY_POINTER, i);
-
- /*
- * initialize CAM registers
- */
- SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff);
- SONIC_WRITE(SONIC_CDC, 16);
-
- /*
- * load the CAM
- */
- SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM);
-
- i = 0;
- while (i++ < 100) {
- if (SONIC_READ(SONIC_ISR) & SONIC_INT_LCD)
- break;
- }
- if (sonic_debug > 2) {
- printk("sonic_init: CMD=%x, ISR=%x\n, i=%d",
- SONIC_READ(SONIC_CMD), SONIC_READ(SONIC_ISR), i);
- }
-
- /*
- * enable receiver, disable loopback
- * and enable all interrupts
- */
- SONIC_WRITE(SONIC_CMD, SONIC_CR_RXEN | SONIC_CR_STP);
- SONIC_WRITE(SONIC_RCR, SONIC_RCR_DEFAULT);
- SONIC_WRITE(SONIC_TCR, SONIC_TCR_DEFAULT);
- SONIC_WRITE(SONIC_ISR, 0x7fff);
- SONIC_WRITE(SONIC_IMR, SONIC_IMR_DEFAULT);
-
- cmd = SONIC_READ(SONIC_CMD);
- if ((cmd & SONIC_CR_RXEN) == 0 || (cmd & SONIC_CR_STP) == 0)
- printk(KERN_ERR "sonic_init: failed, status=%x\n", cmd);
-
- if (sonic_debug > 2)
- printk("sonic_init: new status=%x\n",
- SONIC_READ(SONIC_CMD));
-
- return 0;
-}
-
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * Header file for sonic.c
- *
- * (C) Waldorf Electronics, Germany
- * Written by Andreas Busse
- *
- * NOTE: most of the structure definitions here are endian dependent.
- * If you want to use this driver on big endian machines, the data
- * and pad structure members must be exchanged. Also, the structures
- * need to be changed accordingly to the bus size.
- *
- * 981229 MSch: did just that for the 68k Mac port (32 bit, big endian)
- *
- * 990611 David Huggins-Daines <dhd@debian.org>: This machine abstraction
- * does not cope with 16-bit bus sizes very well. Therefore I have
- * rewritten it with ugly macros and evil inlines.
- *
- * 050625 Finn Thain: introduced more 32-bit cards and dhd's support
- * for 16-bit cards (from the mac68k project).
- */
-
-#ifndef SONIC_H
-#define SONIC_H
-
-
-/*
- * SONIC register offsets
- */
-
-#define SONIC_CMD 0x00
-#define SONIC_DCR 0x01
-#define SONIC_RCR 0x02
-#define SONIC_TCR 0x03
-#define SONIC_IMR 0x04
-#define SONIC_ISR 0x05
-
-#define SONIC_UTDA 0x06
-#define SONIC_CTDA 0x07
-
-#define SONIC_URDA 0x0d
-#define SONIC_CRDA 0x0e
-#define SONIC_EOBC 0x13
-#define SONIC_URRA 0x14
-#define SONIC_RSA 0x15
-#define SONIC_REA 0x16
-#define SONIC_RRP 0x17
-#define SONIC_RWP 0x18
-#define SONIC_RSC 0x2b
-
-#define SONIC_CEP 0x21
-#define SONIC_CAP2 0x22
-#define SONIC_CAP1 0x23
-#define SONIC_CAP0 0x24
-#define SONIC_CE 0x25
-#define SONIC_CDP 0x26
-#define SONIC_CDC 0x27
-
-#define SONIC_WT0 0x29
-#define SONIC_WT1 0x2a
-
-#define SONIC_SR 0x28
-
-
-/* test-only registers */
-
-#define SONIC_TPS 0x08
-#define SONIC_TFC 0x09
-#define SONIC_TSA0 0x0a
-#define SONIC_TSA1 0x0b
-#define SONIC_TFS 0x0c
-
-#define SONIC_CRBA0 0x0f
-#define SONIC_CRBA1 0x10
-#define SONIC_RBWC0 0x11
-#define SONIC_RBWC1 0x12
-#define SONIC_TTDA 0x20
-#define SONIC_MDT 0x2f
-
-#define SONIC_TRBA0 0x19
-#define SONIC_TRBA1 0x1a
-#define SONIC_TBWC0 0x1b
-#define SONIC_TBWC1 0x1c
-#define SONIC_LLFA 0x1f
-
-#define SONIC_ADDR0 0x1d
-#define SONIC_ADDR1 0x1e
-
-/*
- * Error counters
- */
-
-#define SONIC_CRCT 0x2c
-#define SONIC_FAET 0x2d
-#define SONIC_MPT 0x2e
-
-#define SONIC_DCR2 0x3f
-
-/*
- * SONIC command bits
- */
-
-#define SONIC_CR_LCAM 0x0200
-#define SONIC_CR_RRRA 0x0100
-#define SONIC_CR_RST 0x0080
-#define SONIC_CR_ST 0x0020
-#define SONIC_CR_STP 0x0010
-#define SONIC_CR_RXEN 0x0008
-#define SONIC_CR_RXDIS 0x0004
-#define SONIC_CR_TXP 0x0002
-#define SONIC_CR_HTX 0x0001
-
-/*
- * SONIC data configuration bits
- */
-
-#define SONIC_DCR_EXBUS 0x8000
-#define SONIC_DCR_LBR 0x2000
-#define SONIC_DCR_PO1 0x1000
-#define SONIC_DCR_PO0 0x0800
-#define SONIC_DCR_SBUS 0x0400
-#define SONIC_DCR_USR1 0x0200
-#define SONIC_DCR_USR0 0x0100
-#define SONIC_DCR_WC1 0x0080
-#define SONIC_DCR_WC0 0x0040
-#define SONIC_DCR_DW 0x0020
-#define SONIC_DCR_BMS 0x0010
-#define SONIC_DCR_RFT1 0x0008
-#define SONIC_DCR_RFT0 0x0004
-#define SONIC_DCR_TFT1 0x0002
-#define SONIC_DCR_TFT0 0x0001
-
-/*
- * Constants for the SONIC receive control register.
- */
-
-#define SONIC_RCR_ERR 0x8000
-#define SONIC_RCR_RNT 0x4000
-#define SONIC_RCR_BRD 0x2000
-#define SONIC_RCR_PRO 0x1000
-#define SONIC_RCR_AMC 0x0800
-#define SONIC_RCR_LB1 0x0400
-#define SONIC_RCR_LB0 0x0200
-
-#define SONIC_RCR_MC 0x0100
-#define SONIC_RCR_BC 0x0080
-#define SONIC_RCR_LPKT 0x0040
-#define SONIC_RCR_CRS 0x0020
-#define SONIC_RCR_COL 0x0010
-#define SONIC_RCR_CRCR 0x0008
-#define SONIC_RCR_FAER 0x0004
-#define SONIC_RCR_LBK 0x0002
-#define SONIC_RCR_PRX 0x0001
-
-#define SONIC_RCR_LB_OFF 0
-#define SONIC_RCR_LB_MAC SONIC_RCR_LB0
-#define SONIC_RCR_LB_ENDEC SONIC_RCR_LB1
-#define SONIC_RCR_LB_TRANS (SONIC_RCR_LB0 | SONIC_RCR_LB1)
-
-/* default RCR setup */
-
-#define SONIC_RCR_DEFAULT (SONIC_RCR_BRD)
-
-
-/*
- * SONIC Transmit Control register bits
- */
-
-#define SONIC_TCR_PINTR 0x8000
-#define SONIC_TCR_POWC 0x4000
-#define SONIC_TCR_CRCI 0x2000
-#define SONIC_TCR_EXDIS 0x1000
-#define SONIC_TCR_EXD 0x0400
-#define SONIC_TCR_DEF 0x0200
-#define SONIC_TCR_NCRS 0x0100
-#define SONIC_TCR_CRLS 0x0080
-#define SONIC_TCR_EXC 0x0040
-#define SONIC_TCR_PMB 0x0008
-#define SONIC_TCR_FU 0x0004
-#define SONIC_TCR_BCM 0x0002
-#define SONIC_TCR_PTX 0x0001
-
-#define SONIC_TCR_DEFAULT 0x0000
-
-/*
- * Constants for the SONIC_INTERRUPT_MASK and
- * SONIC_INTERRUPT_STATUS registers.
- */
-
-#define SONIC_INT_BR 0x4000
-#define SONIC_INT_HBL 0x2000
-#define SONIC_INT_LCD 0x1000
-#define SONIC_INT_PINT 0x0800
-#define SONIC_INT_PKTRX 0x0400
-#define SONIC_INT_TXDN 0x0200
-#define SONIC_INT_TXER 0x0100
-#define SONIC_INT_TC 0x0080
-#define SONIC_INT_RDE 0x0040
-#define SONIC_INT_RBE 0x0020
-#define SONIC_INT_RBAE 0x0010
-#define SONIC_INT_CRC 0x0008
-#define SONIC_INT_FAE 0x0004
-#define SONIC_INT_MP 0x0002
-#define SONIC_INT_RFO 0x0001
-
-
-/*
- * The interrupts we allow.
- */
-
-#define SONIC_IMR_DEFAULT ( SONIC_INT_BR | \
- SONIC_INT_LCD | \
- SONIC_INT_RFO | \
- SONIC_INT_PKTRX | \
- SONIC_INT_TXDN | \
- SONIC_INT_TXER | \
- SONIC_INT_RDE | \
- SONIC_INT_RBAE | \
- SONIC_INT_CRC | \
- SONIC_INT_FAE | \
- SONIC_INT_MP)
-
-
-#define SONIC_EOL 0x0001
-#define CAM_DESCRIPTORS 16
-
-/* Offsets in the various DMA buffers accessed by the SONIC */
-
-#define SONIC_BITMODE16 0
-#define SONIC_BITMODE32 1
-#define SONIC_BUS_SCALE(bitmode) ((bitmode) ? 4 : 2)
-/* Note! These are all measured in bus-size units, so use SONIC_BUS_SCALE */
-#define SIZEOF_SONIC_RR 4
-#define SONIC_RR_BUFADR_L 0
-#define SONIC_RR_BUFADR_H 1
-#define SONIC_RR_BUFSIZE_L 2
-#define SONIC_RR_BUFSIZE_H 3
-
-#define SIZEOF_SONIC_RD 7
-#define SONIC_RD_STATUS 0
-#define SONIC_RD_PKTLEN 1
-#define SONIC_RD_PKTPTR_L 2
-#define SONIC_RD_PKTPTR_H 3
-#define SONIC_RD_SEQNO 4
-#define SONIC_RD_LINK 5
-#define SONIC_RD_IN_USE 6
-
-#define SIZEOF_SONIC_TD 8
-#define SONIC_TD_STATUS 0
-#define SONIC_TD_CONFIG 1
-#define SONIC_TD_PKTSIZE 2
-#define SONIC_TD_FRAG_COUNT 3
-#define SONIC_TD_FRAG_PTR_L 4
-#define SONIC_TD_FRAG_PTR_H 5
-#define SONIC_TD_FRAG_SIZE 6
-#define SONIC_TD_LINK 7
-
-#define SIZEOF_SONIC_CD 4
-#define SONIC_CD_ENTRY_POINTER 0
-#define SONIC_CD_CAP0 1
-#define SONIC_CD_CAP1 2
-#define SONIC_CD_CAP2 3
-
-#define SIZEOF_SONIC_CDA ((CAM_DESCRIPTORS * SIZEOF_SONIC_CD) + 1)
-#define SONIC_CDA_CAM_ENABLE (CAM_DESCRIPTORS * SIZEOF_SONIC_CD)
-
-/*
- * Some tunables for the buffer areas. Power of 2 is required
- * the current driver uses one receive buffer for each descriptor.
- *
- * MSch: use more buffer space for the slow m68k Macs!
- */
-#define SONIC_NUM_RRS 16 /* number of receive resources */
-#define SONIC_NUM_RDS SONIC_NUM_RRS /* number of receive descriptors */
-#define SONIC_NUM_TDS 16 /* number of transmit descriptors */
-
-#define SONIC_RDS_MASK (SONIC_NUM_RDS-1)
-#define SONIC_TDS_MASK (SONIC_NUM_TDS-1)
-
-#define SONIC_RBSIZE 1520 /* size of one resource buffer */
-
-/* Again, measured in bus size units! */
-#define SIZEOF_SONIC_DESC (SIZEOF_SONIC_CDA \
- + (SIZEOF_SONIC_TD * SONIC_NUM_TDS) \
- + (SIZEOF_SONIC_RD * SONIC_NUM_RDS) \
- + (SIZEOF_SONIC_RR * SONIC_NUM_RRS))
-
-/* Information that need to be kept for each board. */
-struct sonic_local {
- /* Bus size. 0 == 16 bits, 1 == 32 bits. */
- int dma_bitmode;
- /* Register offset within the longword (independent of endianness,
- and varies from one type of Macintosh SONIC to another
- (Aarrgh)) */
- int reg_offset;
- void *descriptors;
- /* Crud. These areas have to be within the same 64K. Therefore
- we allocate a desriptors page, and point these to places within it. */
- void *cda; /* CAM descriptor area */
- void *tda; /* Transmit descriptor area */
- void *rra; /* Receive resource area */
- void *rda; /* Receive descriptor area */
- struct sk_buff* volatile rx_skb[SONIC_NUM_RRS]; /* packets to be received */
- struct sk_buff* volatile tx_skb[SONIC_NUM_TDS]; /* packets to be transmitted */
- unsigned int tx_len[SONIC_NUM_TDS]; /* lengths of tx DMA mappings */
- /* Logical DMA addresses on MIPS, bus addresses on m68k
- * (so "laddr" is a bit misleading) */
- dma_addr_t descriptors_laddr;
- u32 cda_laddr; /* logical DMA address of CDA */
- u32 tda_laddr; /* logical DMA address of TDA */
- u32 rra_laddr; /* logical DMA address of RRA */
- u32 rda_laddr; /* logical DMA address of RDA */
- dma_addr_t rx_laddr[SONIC_NUM_RRS]; /* logical DMA addresses of rx skbuffs */
- dma_addr_t tx_laddr[SONIC_NUM_TDS]; /* logical DMA addresses of tx skbuffs */
- unsigned int rra_end;
- unsigned int cur_rwp;
- unsigned int cur_rx;
- unsigned int cur_tx; /* first unacked transmit packet */
- unsigned int eol_rx;
- unsigned int eol_tx; /* last unacked transmit packet */
- unsigned int next_tx; /* next free TD */
- struct device *device; /* generic device */
- struct net_device_stats stats;
-};
-
-#define TX_TIMEOUT (3 * HZ)
-
-/* Index to functions, as function prototypes. */
-
-static int sonic_open(struct net_device *dev);
-static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev);
-static irqreturn_t sonic_interrupt(int irq, void *dev_id);
-static void sonic_rx(struct net_device *dev);
-static int sonic_close(struct net_device *dev);
-static struct net_device_stats *sonic_get_stats(struct net_device *dev);
-static void sonic_multicast_list(struct net_device *dev);
-static int sonic_init(struct net_device *dev);
-static void sonic_tx_timeout(struct net_device *dev);
-
-/* Internal inlines for reading/writing DMA buffers. Note that bus
- size and endianness matter here, whereas they don't for registers,
- as far as we can tell. */
-/* OpenBSD calls this "SWO". I'd like to think that sonic_buf_put()
- is a much better name. */
-static inline void sonic_buf_put(void* base, int bitmode,
- int offset, __u16 val)
-{
- if (bitmode)
-#ifdef __BIG_ENDIAN
- ((__u16 *) base + (offset*2))[1] = val;
-#else
- ((__u16 *) base + (offset*2))[0] = val;
-#endif
- else
- ((__u16 *) base)[offset] = val;
-}
-
-static inline __u16 sonic_buf_get(void* base, int bitmode,
- int offset)
-{
- if (bitmode)
-#ifdef __BIG_ENDIAN
- return ((volatile __u16 *) base + (offset*2))[1];
-#else
- return ((volatile __u16 *) base + (offset*2))[0];
-#endif
- else
- return ((volatile __u16 *) base)[offset];
-}
-
-/* Inlines that you should actually use for reading/writing DMA buffers */
-static inline void sonic_cda_put(struct net_device* dev, int entry,
- int offset, __u16 val)
-{
- struct sonic_local *lp = netdev_priv(dev);
- sonic_buf_put(lp->cda, lp->dma_bitmode,
- (entry * SIZEOF_SONIC_CD) + offset, val);
-}
-
-static inline __u16 sonic_cda_get(struct net_device* dev, int entry,
- int offset)
-{
- struct sonic_local *lp = netdev_priv(dev);
- return sonic_buf_get(lp->cda, lp->dma_bitmode,
- (entry * SIZEOF_SONIC_CD) + offset);
-}
-
-static inline void sonic_set_cam_enable(struct net_device* dev, __u16 val)
-{
- struct sonic_local *lp = netdev_priv(dev);
- sonic_buf_put(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE, val);
-}
-
-static inline __u16 sonic_get_cam_enable(struct net_device* dev)
-{
- struct sonic_local *lp = netdev_priv(dev);
- return sonic_buf_get(lp->cda, lp->dma_bitmode, SONIC_CDA_CAM_ENABLE);
-}
-
-static inline void sonic_tda_put(struct net_device* dev, int entry,
- int offset, __u16 val)
-{
- struct sonic_local *lp = netdev_priv(dev);
- sonic_buf_put(lp->tda, lp->dma_bitmode,
- (entry * SIZEOF_SONIC_TD) + offset, val);
-}
-
-static inline __u16 sonic_tda_get(struct net_device* dev, int entry,
- int offset)
-{
- struct sonic_local *lp = netdev_priv(dev);
- return sonic_buf_get(lp->tda, lp->dma_bitmode,
- (entry * SIZEOF_SONIC_TD) + offset);
-}
-
-static inline void sonic_rda_put(struct net_device* dev, int entry,
- int offset, __u16 val)
-{
- struct sonic_local *lp = netdev_priv(dev);
- sonic_buf_put(lp->rda, lp->dma_bitmode,
- (entry * SIZEOF_SONIC_RD) + offset, val);
-}
-
-static inline __u16 sonic_rda_get(struct net_device* dev, int entry,
- int offset)
-{
- struct sonic_local *lp = netdev_priv(dev);
- return sonic_buf_get(lp->rda, lp->dma_bitmode,
- (entry * SIZEOF_SONIC_RD) + offset);
-}
-
-static inline void sonic_rra_put(struct net_device* dev, int entry,
- int offset, __u16 val)
-{
- struct sonic_local *lp = netdev_priv(dev);
- sonic_buf_put(lp->rra, lp->dma_bitmode,
- (entry * SIZEOF_SONIC_RR) + offset, val);
-}
-
-static inline __u16 sonic_rra_get(struct net_device* dev, int entry,
- int offset)
-{
- struct sonic_local *lp = netdev_priv(dev);
- return sonic_buf_get(lp->rra, lp->dma_bitmode,
- (entry * SIZEOF_SONIC_RR) + offset);
-}
-
-static const char *version =
- "sonic.c:v0.92 20.9.98 tsbogend@alpha.franken.de\n";
-
-#endif /* SONIC_H */
+++ /dev/null
-/*
- * xtsonic.c
- *
- * (C) 2001 - 2007 Tensilica Inc.
- * Kevin Chea <kchea@yahoo.com>
- * Marc Gauthier <marc@linux-xtensa.org>
- * Chris Zankel <chris@zankel.net>
- *
- * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
- *
- * This driver is based on work from Andreas Busse, but most of
- * the code is rewritten.
- *
- * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
- *
- * A driver for the onboard Sonic ethernet controller on the XT2000.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/gfp.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/slab.h>
-
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/dma.h>
-
-static char xtsonic_string[] = "xtsonic";
-
-extern unsigned xtboard_nvram_valid(void);
-extern void xtboard_get_ether_addr(unsigned char *buf);
-
-#include "sonic.h"
-
-/*
- * According to the documentation for the Sonic ethernet controller,
- * EOBC should be 760 words (1520 bytes) for 32-bit applications, and,
- * as such, 2 words less than the buffer size. The value for RBSIZE
- * defined in sonic.h, however is only 1520.
- *
- * (Note that in 16-bit configurations, EOBC is 759 words (1518 bytes) and
- * RBSIZE 1520 bytes)
- */
-#undef SONIC_RBSIZE
-#define SONIC_RBSIZE 1524
-
-/*
- * The chip provides 256 byte register space.
- */
-#define SONIC_MEM_SIZE 0x100
-
-/*
- * Macros to access SONIC registers
- */
-#define SONIC_READ(reg) \
- (0xffff & *((volatile unsigned int *)dev->base_addr+reg))
-
-#define SONIC_WRITE(reg,val) \
- *((volatile unsigned int *)dev->base_addr+reg) = val
-
-
-/* Use 0 for production, 1 for verification, and >2 for debug */
-#ifdef SONIC_DEBUG
-static unsigned int sonic_debug = SONIC_DEBUG;
-#else
-static unsigned int sonic_debug = 1;
-#endif
-
-/*
- * We cannot use station (ethernet) address prefixes to detect the
- * sonic controller since these are board manufacturer depended.
- * So we check for known Silicon Revision IDs instead.
- */
-static unsigned short known_revisions[] =
-{
- 0x101, /* SONIC 83934 */
- 0xffff /* end of list */
-};
-
-static int xtsonic_open(struct net_device *dev)
-{
- int retval;
-
- retval = request_irq(dev->irq, sonic_interrupt, IRQF_DISABLED,
- "sonic", dev);
- if (retval) {
- printk(KERN_ERR "%s: unable to get IRQ %d.\n",
- dev->name, dev->irq);
- return -EAGAIN;
- }
-
- retval = sonic_open(dev);
- if (retval)
- free_irq(dev->irq, dev);
- return retval;
-}
-
-static int xtsonic_close(struct net_device *dev)
-{
- int err;
- err = sonic_close(dev);
- free_irq(dev->irq, dev);
- return err;
-}
-
-static const struct net_device_ops xtsonic_netdev_ops = {
- .ndo_open = xtsonic_open,
- .ndo_stop = xtsonic_close,
- .ndo_start_xmit = sonic_send_packet,
- .ndo_get_stats = sonic_get_stats,
- .ndo_set_multicast_list = sonic_multicast_list,
- .ndo_tx_timeout = sonic_tx_timeout,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_set_mac_address = eth_mac_addr,
-};
-
-static int __init sonic_probe1(struct net_device *dev)
-{
- static unsigned version_printed = 0;
- unsigned int silicon_revision;
- struct sonic_local *lp = netdev_priv(dev);
- unsigned int base_addr = dev->base_addr;
- int i;
- int err = 0;
-
- if (!request_mem_region(base_addr, 0x100, xtsonic_string))
- return -EBUSY;
-
- /*
- * get the Silicon Revision ID. If this is one of the known
- * one assume that we found a SONIC ethernet controller at
- * the expected location.
- */
- silicon_revision = SONIC_READ(SONIC_SR);
- if (sonic_debug > 1)
- printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);
-
- i = 0;
- while ((known_revisions[i] != 0xffff) &&
- (known_revisions[i] != silicon_revision))
- i++;
-
- if (known_revisions[i] == 0xffff) {
- printk("SONIC ethernet controller not found (0x%4x)\n",
- silicon_revision);
- return -ENODEV;
- }
-
- if (sonic_debug && version_printed++ == 0)
- printk(version);
-
- /*
- * Put the sonic into software reset, then retrieve ethernet address.
- * Note: we are assuming that the boot-loader has initialized the cam.
- */
- SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
- SONIC_WRITE(SONIC_DCR,
- SONIC_DCR_WC0|SONIC_DCR_DW|SONIC_DCR_LBR|SONIC_DCR_SBUS);
- SONIC_WRITE(SONIC_CEP,0);
- SONIC_WRITE(SONIC_IMR,0);
-
- SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
- SONIC_WRITE(SONIC_CEP,0);
-
- for (i=0; i<3; i++) {
- unsigned int val = SONIC_READ(SONIC_CAP0-i);
- dev->dev_addr[i*2] = val;
- dev->dev_addr[i*2+1] = val >> 8;
- }
-
- /* Initialize the device structure. */
-
- lp->dma_bitmode = SONIC_BITMODE32;
-
- /*
- * Allocate local private descriptor areas in uncached space.
- * The entire structure must be located within the same 64kb segment.
- * A simple way to ensure this is to allocate twice the
- * size of the structure -- given that the structure is
- * much less than 64 kB, at least one of the halves of
- * the allocated area will be contained entirely in 64 kB.
- * We also allocate extra space for a pointer to allow freeing
- * this structure later on (in xtsonic_cleanup_module()).
- */
- lp->descriptors =
- dma_alloc_coherent(lp->device,
- SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
- &lp->descriptors_laddr, GFP_KERNEL);
-
- if (lp->descriptors == NULL) {
- printk(KERN_ERR "%s: couldn't alloc DMA memory for "
- " descriptors.\n", dev_name(lp->device));
- goto out;
- }
-
- lp->cda = lp->descriptors;
- lp->tda = lp->cda + (SIZEOF_SONIC_CDA
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
-
- /* get the virtual dma address */
-
- lp->cda_laddr = lp->descriptors_laddr;
- lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
- lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
- * SONIC_BUS_SCALE(lp->dma_bitmode));
-
- dev->netdev_ops = &xtsonic_netdev_ops;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- /*
- * clear tally counter
- */
- SONIC_WRITE(SONIC_CRCT,0xffff);
- SONIC_WRITE(SONIC_FAET,0xffff);
- SONIC_WRITE(SONIC_MPT,0xffff);
-
- return 0;
-out:
- release_region(dev->base_addr, SONIC_MEM_SIZE);
- return err;
-}
-
-
-/*
- * Probe for a SONIC ethernet controller on an XT2000 board.
- * Actually probing is superfluous but we're paranoid.
- */
-
-int __devinit xtsonic_probe(struct platform_device *pdev)
-{
- struct net_device *dev;
- struct sonic_local *lp;
- struct resource *resmem, *resirq;
- int err = 0;
-
- if ((resmem = platform_get_resource(pdev, IORESOURCE_MEM, 0)) == NULL)
- return -ENODEV;
-
- if ((resirq = platform_get_resource(pdev, IORESOURCE_IRQ, 0)) == NULL)
- return -ENODEV;
-
- if ((dev = alloc_etherdev(sizeof(struct sonic_local))) == NULL)
- return -ENOMEM;
-
- lp = netdev_priv(dev);
- lp->device = &pdev->dev;
- SET_NETDEV_DEV(dev, &pdev->dev);
- netdev_boot_setup_check(dev);
-
- dev->base_addr = resmem->start;
- dev->irq = resirq->start;
-
- if ((err = sonic_probe1(dev)))
- goto out;
- if ((err = register_netdev(dev)))
- goto out1;
-
- printk("%s: SONIC ethernet @%08lx, MAC %pM, IRQ %d\n", dev->name,
- dev->base_addr, dev->dev_addr, dev->irq);
-
- return 0;
-
-out1:
- release_region(dev->base_addr, SONIC_MEM_SIZE);
-out:
- free_netdev(dev);
-
- return err;
-}
-
-MODULE_DESCRIPTION("Xtensa XT2000 SONIC ethernet driver");
-module_param(sonic_debug, int, 0);
-MODULE_PARM_DESC(sonic_debug, "xtsonic debug level (1-4)");
-
-#include "sonic.c"
-
-static int __devexit xtsonic_device_remove (struct platform_device *pdev)
-{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct sonic_local *lp = netdev_priv(dev);
-
- unregister_netdev(dev);
- dma_free_coherent(lp->device,
- SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
- lp->descriptors, lp->descriptors_laddr);
- release_region (dev->base_addr, SONIC_MEM_SIZE);
- free_netdev(dev);
-
- return 0;
-}
-
-static struct platform_driver xtsonic_driver = {
- .probe = xtsonic_probe,
- .remove = __devexit_p(xtsonic_device_remove),
- .driver = {
- .name = xtsonic_string,
- },
-};
-
-static int __init xtsonic_init(void)
-{
- return platform_driver_register(&xtsonic_driver);
-}
-
-static void __exit xtsonic_cleanup(void)
-{
- platform_driver_unregister(&xtsonic_driver);
-}
-
-module_init(xtsonic_init);
-module_exit(xtsonic_cleanup);
projects / mirror_ubuntu-zesty-kernel.git / commitdiff