+++ /dev/null
-/* 3c501.c: A 3Com 3c501 Ethernet driver for Linux. */
-/*
- Written 1992,1993,1994 Donald Becker
-
- Copyright 1993 United States Government as represented by the
- Director, National Security Agency. This software may be used and
- distributed according to the terms of the GNU General Public License,
- incorporated herein by reference.
-
- This is a device driver for the 3Com Etherlink 3c501.
- Do not purchase this card, even as a joke. It's performance is horrible,
- and it breaks in many ways.
-
- The original author may be reached as becker@scyld.com, or C/O
- Scyld Computing Corporation
- 410 Severn Ave., Suite 210
- Annapolis MD 21403
-
- Fixed (again!) the missing interrupt locking on TX/RX shifting.
- Alan Cox <alan@lxorguk.ukuu.org.uk>
-
- Removed calls to init_etherdev since they are no longer needed, and
- cleaned up modularization just a bit. The driver still allows only
- the default address for cards when loaded as a module, but that's
- really less braindead than anyone using a 3c501 board. :)
- 19950208 (invid@msen.com)
-
- Added traps for interrupts hitting the window as we clear and TX load
- the board. Now getting 150K/second FTP with a 3c501 card. Still playing
- with a TX-TX optimisation to see if we can touch 180-200K/second as seems
- theoretically maximum.
- 19950402 Alan Cox <alan@lxorguk.ukuu.org.uk>
-
- Cleaned up for 2.3.x because we broke SMP now.
- 20000208 Alan Cox <alan@lxorguk.ukuu.org.uk>
-
- Check up pass for 2.5. Nothing significant changed
- 20021009 Alan Cox <alan@lxorguk.ukuu.org.uk>
-
- Fixed zero fill corner case
- 20030104 Alan Cox <alan@lxorguk.ukuu.org.uk>
-
-
- For the avoidance of doubt the "preferred form" of this code is one which
- is in an open non patent encumbered format. Where cryptographic key signing
- forms part of the process of creating an executable the information
- including keys needed to generate an equivalently functional executable
- are deemed to be part of the source code.
-
-*/
-
-
-/**
- * DOC: 3c501 Card Notes
- *
- * Some notes on this thing if you have to hack it. [Alan]
- *
- * Some documentation is available from 3Com. Due to the boards age
- * standard responses when you ask for this will range from 'be serious'
- * to 'give it to a museum'. The documentation is incomplete and mostly
- * of historical interest anyway.
- *
- * The basic system is a single buffer which can be used to receive or
- * transmit a packet. A third command mode exists when you are setting
- * things up.
- *
- * If it's transmitting it's not receiving and vice versa. In fact the
- * time to get the board back into useful state after an operation is
- * quite large.
- *
- * The driver works by keeping the board in receive mode waiting for a
- * packet to arrive. When one arrives it is copied out of the buffer
- * and delivered to the kernel. The card is reloaded and off we go.
- *
- * When transmitting lp->txing is set and the card is reset (from
- * receive mode) [possibly losing a packet just received] to command
- * mode. A packet is loaded and transmit mode triggered. The interrupt
- * handler runs different code for transmit interrupts and can handle
- * returning to receive mode or retransmissions (yes you have to help
- * out with those too).
- *
- * DOC: Problems
- *
- * There are a wide variety of undocumented error returns from the card
- * and you basically have to kick the board and pray if they turn up. Most
- * only occur under extreme load or if you do something the board doesn't
- * like (eg touching a register at the wrong time).
- *
- * The driver is less efficient than it could be. It switches through
- * receive mode even if more transmits are queued. If this worries you buy
- * a real Ethernet card.
- *
- * The combination of slow receive restart and no real multicast
- * filter makes the board unusable with a kernel compiled for IP
- * multicasting in a real multicast environment. That's down to the board,
- * but even with no multicast programs running a multicast IP kernel is
- * in group 224.0.0.1 and you will therefore be listening to all multicasts.
- * One nv conference running over that Ethernet and you can give up.
- *
- */
-
-#define DRV_NAME "3c501"
-#define DRV_VERSION "2002/10/09"
-
-
-static const char version[] =
- DRV_NAME ".c: " DRV_VERSION " Alan Cox (alan@lxorguk.ukuu.org.uk).\n";
-
-/*
- * Braindamage remaining:
- * The 3c501 board.
- */
-
-#include <linux/module.h>
-
-#include <linux/kernel.h>
-#include <linux/fcntl.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/spinlock.h>
-#include <linux/ethtool.h>
-#include <linux/delay.h>
-#include <linux/bitops.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/init.h>
-
-#include "3c501.h"
-
-/*
- * The boilerplate probe code.
- */
-
-static int io = 0x280;
-static int irq = 5;
-static int mem_start;
-
-/**
- * el1_probe - probe for a 3c501
- * @dev: The device structure passed in to probe.
- *
- * This can be called from two places. The network layer will probe using
- * a device structure passed in with the probe information completed. For a
- * modular driver we use #init_module to fill in our own structure and probe
- * for it.
- *
- * Returns 0 on success. ENXIO if asked not to probe and ENODEV if asked to
- * probe and failing to find anything.
- */
-
-struct net_device * __init el1_probe(int unit)
-{
- struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
- static const unsigned ports[] = { 0x280, 0x300, 0};
- const unsigned *port;
- int err = 0;
-
- if (!dev)
- return ERR_PTR(-ENOMEM);
-
- if (unit >= 0) {
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
- io = dev->base_addr;
- irq = dev->irq;
- mem_start = dev->mem_start & 7;
- }
-
- if (io > 0x1ff) { /* Check a single specified location. */
- err = el1_probe1(dev, io);
- } else if (io != 0) {
- err = -ENXIO; /* Don't probe at all. */
- } else {
- for (port = ports; *port && el1_probe1(dev, *port); port++)
- ;
- if (!*port)
- err = -ENODEV;
- }
- if (err)
- goto out;
- err = register_netdev(dev);
- if (err)
- goto out1;
- return dev;
-out1:
- release_region(dev->base_addr, EL1_IO_EXTENT);
-out:
- free_netdev(dev);
- return ERR_PTR(err);
-}
-
-static const struct net_device_ops el_netdev_ops = {
- .ndo_open = el_open,
- .ndo_stop = el1_close,
- .ndo_start_xmit = el_start_xmit,
- .ndo_tx_timeout = el_timeout,
- .ndo_set_rx_mode = set_multicast_list,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-/**
- * el1_probe1:
- * @dev: The device structure to use
- * @ioaddr: An I/O address to probe at.
- *
- * The actual probe. This is iterated over by #el1_probe in order to
- * check all the applicable device locations.
- *
- * Returns 0 for a success, in which case the device is activated,
- * EAGAIN if the IRQ is in use by another driver, and ENODEV if the
- * board cannot be found.
- */
-
-static int __init el1_probe1(struct net_device *dev, int ioaddr)
-{
- struct net_local *lp;
- const char *mname; /* Vendor name */
- unsigned char station_addr[6];
- int autoirq = 0;
- int i;
-
- /*
- * Reserve I/O resource for exclusive use by this driver
- */
-
- if (!request_region(ioaddr, EL1_IO_EXTENT, DRV_NAME))
- return -ENODEV;
-
- /*
- * Read the station address PROM data from the special port.
- */
-
- for (i = 0; i < 6; i++) {
- outw(i, ioaddr + EL1_DATAPTR);
- station_addr[i] = inb(ioaddr + EL1_SAPROM);
- }
- /*
- * Check the first three octets of the S.A. for 3Com's prefix, or
- * for the Sager NP943 prefix.
- */
-
- if (station_addr[0] == 0x02 && station_addr[1] == 0x60 &&
- station_addr[2] == 0x8c)
- mname = "3c501";
- else if (station_addr[0] == 0x00 && station_addr[1] == 0x80 &&
- station_addr[2] == 0xC8)
- mname = "NP943";
- else {
- release_region(ioaddr, EL1_IO_EXTENT);
- return -ENODEV;
- }
-
- /*
- * We auto-IRQ by shutting off the interrupt line and letting it
- * float high.
- */
-
- dev->irq = irq;
-
- if (dev->irq < 2) {
- unsigned long irq_mask;
-
- irq_mask = probe_irq_on();
- inb(RX_STATUS); /* Clear pending interrupts. */
- inb(TX_STATUS);
- outb(AX_LOOP + 1, AX_CMD);
-
- outb(0x00, AX_CMD);
-
- mdelay(20);
- autoirq = probe_irq_off(irq_mask);
-
- if (autoirq == 0) {
- pr_warning("%s probe at %#x failed to detect IRQ line.\n",
- mname, ioaddr);
- release_region(ioaddr, EL1_IO_EXTENT);
- return -EAGAIN;
- }
- }
-
- outb(AX_RESET+AX_LOOP, AX_CMD); /* Loopback mode. */
- dev->base_addr = ioaddr;
- memcpy(dev->dev_addr, station_addr, ETH_ALEN);
-
- if (mem_start & 0xf)
- el_debug = mem_start & 0x7;
- if (autoirq)
- dev->irq = autoirq;
-
- pr_info("%s: %s EtherLink at %#lx, using %sIRQ %d.\n",
- dev->name, mname, dev->base_addr,
- autoirq ? "auto":"assigned ", dev->irq);
-
-#ifdef CONFIG_IP_MULTICAST
- pr_warning("WARNING: Use of the 3c501 in a multicast kernel is NOT recommended.\n");
-#endif
-
- if (el_debug)
- pr_debug("%s", version);
-
- lp = netdev_priv(dev);
- memset(lp, 0, sizeof(struct net_local));
- spin_lock_init(&lp->lock);
-
- /*
- * The EL1-specific entries in the device structure.
- */
-
- dev->netdev_ops = &el_netdev_ops;
- dev->watchdog_timeo = HZ;
- dev->ethtool_ops = &netdev_ethtool_ops;
- return 0;
-}
-
-/**
- * el1_open:
- * @dev: device that is being opened
- *
- * When an ifconfig is issued which changes the device flags to include
- * IFF_UP this function is called. It is only called when the change
- * occurs, not when the interface remains up. #el1_close will be called
- * when it goes down.
- *
- * Returns 0 for a successful open, or -EAGAIN if someone has run off
- * with our interrupt line.
- */
-
-static int el_open(struct net_device *dev)
-{
- int retval;
- int ioaddr = dev->base_addr;
- struct net_local *lp = netdev_priv(dev);
- unsigned long flags;
-
- if (el_debug > 2)
- pr_debug("%s: Doing el_open()...\n", dev->name);
-
- retval = request_irq(dev->irq, el_interrupt, 0, dev->name, dev);
- if (retval)
- return retval;
-
- spin_lock_irqsave(&lp->lock, flags);
- el_reset(dev);
- spin_unlock_irqrestore(&lp->lock, flags);
-
- lp->txing = 0; /* Board in RX mode */
- outb(AX_RX, AX_CMD); /* Aux control, irq and receive enabled */
- netif_start_queue(dev);
- return 0;
-}
-
-/**
- * el_timeout:
- * @dev: The 3c501 card that has timed out
- *
- * Attempt to restart the board. This is basically a mixture of extreme
- * violence and prayer
- *
- */
-
-static void el_timeout(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- int ioaddr = dev->base_addr;
-
- if (el_debug)
- pr_debug("%s: transmit timed out, txsr %#2x axsr=%02x rxsr=%02x.\n",
- dev->name, inb(TX_STATUS),
- inb(AX_STATUS), inb(RX_STATUS));
- dev->stats.tx_errors++;
- outb(TX_NORM, TX_CMD);
- outb(RX_NORM, RX_CMD);
- outb(AX_OFF, AX_CMD); /* Just trigger a false interrupt. */
- outb(AX_RX, AX_CMD); /* Aux control, irq and receive enabled */
- lp->txing = 0; /* Ripped back in to RX */
- netif_wake_queue(dev);
-}
-
-
-/**
- * el_start_xmit:
- * @skb: The packet that is queued to be sent
- * @dev: The 3c501 card we want to throw it down
- *
- * Attempt to send a packet to a 3c501 card. There are some interesting
- * catches here because the 3c501 is an extremely old and therefore
- * stupid piece of technology.
- *
- * If we are handling an interrupt on the other CPU we cannot load a packet
- * as we may still be attempting to retrieve the last RX packet buffer.
- *
- * When a transmit times out we dump the card into control mode and just
- * start again. It happens enough that it isn't worth logging.
- *
- * We avoid holding the spin locks when doing the packet load to the board.
- * The device is very slow, and its DMA mode is even slower. If we held the
- * lock while loading 1500 bytes onto the controller we would drop a lot of
- * serial port characters. This requires we do extra locking, but we have
- * no real choice.
- */
-
-static netdev_tx_t el_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- int ioaddr = dev->base_addr;
- unsigned long flags;
-
- /*
- * Avoid incoming interrupts between us flipping txing and flipping
- * mode as the driver assumes txing is a faithful indicator of card
- * state
- */
-
- spin_lock_irqsave(&lp->lock, flags);
-
- /*
- * Avoid timer-based retransmission conflicts.
- */
-
- netif_stop_queue(dev);
-
- do {
- int len = skb->len;
- int pad = 0;
- int gp_start;
- unsigned char *buf = skb->data;
-
- if (len < ETH_ZLEN)
- pad = ETH_ZLEN - len;
-
- gp_start = 0x800 - (len + pad);
-
- lp->tx_pkt_start = gp_start;
- lp->collisions = 0;
-
- dev->stats.tx_bytes += skb->len;
-
- /*
- * Command mode with status cleared should [in theory]
- * mean no more interrupts can be pending on the card.
- */
-
- outb_p(AX_SYS, AX_CMD);
- inb_p(RX_STATUS);
- inb_p(TX_STATUS);
-
- lp->loading = 1;
- lp->txing = 1;
-
- /*
- * Turn interrupts back on while we spend a pleasant
- * afternoon loading bytes into the board
- */
-
- spin_unlock_irqrestore(&lp->lock, flags);
-
- /* Set rx packet area to 0. */
- outw(0x00, RX_BUF_CLR);
- /* aim - packet will be loaded into buffer start */
- outw(gp_start, GP_LOW);
- /* load buffer (usual thing each byte increments the pointer) */
- outsb(DATAPORT, buf, len);
- if (pad) {
- while (pad--) /* Zero fill buffer tail */
- outb(0, DATAPORT);
- }
- /* the board reuses the same register */
- outw(gp_start, GP_LOW);
-
- if (lp->loading != 2) {
- /* fire ... Trigger xmit. */
- outb(AX_XMIT, AX_CMD);
- lp->loading = 0;
- if (el_debug > 2)
- pr_debug(" queued xmit.\n");
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
- /* A receive upset our load, despite our best efforts */
- if (el_debug > 2)
- pr_debug("%s: burped during tx load.\n", dev->name);
- spin_lock_irqsave(&lp->lock, flags);
- } while (1);
-}
-
-/**
- * el_interrupt:
- * @irq: Interrupt number
- * @dev_id: The 3c501 that burped
- *
- * Handle the ether interface interrupts. The 3c501 needs a lot more
- * hand holding than most cards. In particular we get a transmit interrupt
- * with a collision error because the board firmware isn't capable of rewinding
- * its own transmit buffer pointers. It can however count to 16 for us.
- *
- * On the receive side the card is also very dumb. It has no buffering to
- * speak of. We simply pull the packet out of its PIO buffer (which is slow)
- * and queue it for the kernel. Then we reset the card for the next packet.
- *
- * We sometimes get surprise interrupts late both because the SMP IRQ delivery
- * is message passing and because the card sometimes seems to deliver late. I
- * think if it is part way through a receive and the mode is changed it carries
- * on receiving and sends us an interrupt. We have to band aid all these cases
- * to get a sensible 150kBytes/second performance. Even then you want a small
- * TCP window.
- */
-
-static irqreturn_t el_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct net_local *lp;
- int ioaddr;
- int axsr; /* Aux. status reg. */
-
- ioaddr = dev->base_addr;
- lp = netdev_priv(dev);
-
- spin_lock(&lp->lock);
-
- /*
- * What happened ?
- */
-
- axsr = inb(AX_STATUS);
-
- /*
- * Log it
- */
-
- if (el_debug > 3)
- pr_debug("%s: el_interrupt() aux=%#02x\n", dev->name, axsr);
-
- if (lp->loading == 1 && !lp->txing)
- pr_warning("%s: Inconsistent state loading while not in tx\n",
- dev->name);
-
- if (lp->txing) {
- /*
- * Board in transmit mode. May be loading. If we are
- * loading we shouldn't have got this.
- */
- int txsr = inb(TX_STATUS);
-
- if (lp->loading == 1) {
- if (el_debug > 2)
- pr_debug("%s: Interrupt while loading [txsr=%02x gp=%04x rp=%04x]\n",
- dev->name, txsr, inw(GP_LOW), inw(RX_LOW));
-
- /* Force a reload */
- lp->loading = 2;
- spin_unlock(&lp->lock);
- goto out;
- }
- if (el_debug > 6)
- pr_debug("%s: txsr=%02x gp=%04x rp=%04x\n", dev->name,
- txsr, inw(GP_LOW), inw(RX_LOW));
-
- if ((axsr & 0x80) && (txsr & TX_READY) == 0) {
- /*
- * FIXME: is there a logic to whether to keep
- * on trying or reset immediately ?
- */
- if (el_debug > 1)
- pr_debug("%s: Unusual interrupt during Tx, txsr=%02x axsr=%02x gp=%03x rp=%03x.\n",
- dev->name, txsr, axsr,
- inw(ioaddr + EL1_DATAPTR),
- inw(ioaddr + EL1_RXPTR));
- lp->txing = 0;
- netif_wake_queue(dev);
- } else if (txsr & TX_16COLLISIONS) {
- /*
- * Timed out
- */
- if (el_debug)
- pr_debug("%s: Transmit failed 16 times, Ethernet jammed?\n", dev->name);
- outb(AX_SYS, AX_CMD);
- lp->txing = 0;
- dev->stats.tx_aborted_errors++;
- netif_wake_queue(dev);
- } else if (txsr & TX_COLLISION) {
- /*
- * Retrigger xmit.
- */
-
- if (el_debug > 6)
- pr_debug("%s: retransmitting after a collision.\n", dev->name);
- /*
- * Poor little chip can't reset its own start
- * pointer
- */
-
- outb(AX_SYS, AX_CMD);
- outw(lp->tx_pkt_start, GP_LOW);
- outb(AX_XMIT, AX_CMD);
- dev->stats.collisions++;
- spin_unlock(&lp->lock);
- goto out;
- } else {
- /*
- * It worked.. we will now fall through and receive
- */
- dev->stats.tx_packets++;
- if (el_debug > 6)
- pr_debug("%s: Tx succeeded %s\n", dev->name,
- (txsr & TX_RDY) ? "." : "but tx is busy!");
- /*
- * This is safe the interrupt is atomic WRT itself.
- */
- lp->txing = 0;
- /* In case more to transmit */
- netif_wake_queue(dev);
- }
- } else {
- /*
- * In receive mode.
- */
-
- int rxsr = inb(RX_STATUS);
- if (el_debug > 5)
- pr_debug("%s: rxsr=%02x txsr=%02x rp=%04x\n",
- dev->name, rxsr, inb(TX_STATUS), inw(RX_LOW));
- /*
- * Just reading rx_status fixes most errors.
- */
- if (rxsr & RX_MISSED)
- dev->stats.rx_missed_errors++;
- else if (rxsr & RX_RUNT) {
- /* Handled to avoid board lock-up. */
- dev->stats.rx_length_errors++;
- if (el_debug > 5)
- pr_debug("%s: runt.\n", dev->name);
- } else if (rxsr & RX_GOOD) {
- /*
- * Receive worked.
- */
- el_receive(dev);
- } else {
- /*
- * Nothing? Something is broken!
- */
- if (el_debug > 2)
- pr_debug("%s: No packet seen, rxsr=%02x **resetting 3c501***\n",
- dev->name, rxsr);
- el_reset(dev);
- }
- }
-
- /*
- * Move into receive mode
- */
-
- outb(AX_RX, AX_CMD);
- outw(0x00, RX_BUF_CLR);
- inb(RX_STATUS); /* Be certain that interrupts are cleared. */
- inb(TX_STATUS);
- spin_unlock(&lp->lock);
-out:
- return IRQ_HANDLED;
-}
-
-
-/**
- * el_receive:
- * @dev: Device to pull the packets from
- *
- * We have a good packet. Well, not really "good", just mostly not broken.
- * We must check everything to see if it is good. In particular we occasionally
- * get wild packet sizes from the card. If the packet seems sane we PIO it
- * off the card and queue it for the protocol layers.
- */
-
-static void el_receive(struct net_device *dev)
-{
- int ioaddr = dev->base_addr;
- int pkt_len;
- struct sk_buff *skb;
-
- pkt_len = inw(RX_LOW);
-
- if (el_debug > 4)
- pr_debug(" el_receive %d.\n", pkt_len);
-
- if (pkt_len < 60 || pkt_len > 1536) {
- if (el_debug)
- pr_debug("%s: bogus packet, length=%d\n",
- dev->name, pkt_len);
- dev->stats.rx_over_errors++;
- return;
- }
-
- /*
- * Command mode so we can empty the buffer
- */
-
- outb(AX_SYS, AX_CMD);
- skb = netdev_alloc_skb(dev, pkt_len + 2);
-
- /*
- * Start of frame
- */
-
- outw(0x00, GP_LOW);
- if (skb == NULL) {
- pr_info("%s: Memory squeeze, dropping packet.\n", dev->name);
- dev->stats.rx_dropped++;
- return;
- } else {
- skb_reserve(skb, 2); /* Force 16 byte alignment */
- /*
- * The read increments through the bytes. The interrupt
- * handler will fix the pointer when it returns to
- * receive mode.
- */
- insb(DATAPORT, skb_put(skb, pkt_len), pkt_len);
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += pkt_len;
- }
-}
-
-/**
- * el_reset: Reset a 3c501 card
- * @dev: The 3c501 card about to get zapped
- *
- * Even resetting a 3c501 isn't simple. When you activate reset it loses all
- * its configuration. You must hold the lock when doing this. The function
- * cannot take the lock itself as it is callable from the irq handler.
- */
-
-static void el_reset(struct net_device *dev)
-{
- struct net_local *lp = netdev_priv(dev);
- int ioaddr = dev->base_addr;
-
- if (el_debug > 2)
- pr_info("3c501 reset...\n");
- outb(AX_RESET, AX_CMD); /* Reset the chip */
- /* Aux control, irq and loopback enabled */
- outb(AX_LOOP, AX_CMD);
- {
- int i;
- for (i = 0; i < 6; i++) /* Set the station address. */
- outb(dev->dev_addr[i], ioaddr + i);
- }
-
- outw(0, RX_BUF_CLR); /* Set rx packet area to 0. */
- outb(TX_NORM, TX_CMD); /* tx irq on done, collision */
- outb(RX_NORM, RX_CMD); /* Set Rx commands. */
- inb(RX_STATUS); /* Clear status. */
- inb(TX_STATUS);
- lp->txing = 0;
-}
-
-/**
- * el1_close:
- * @dev: 3c501 card to shut down
- *
- * Close a 3c501 card. The IFF_UP flag has been cleared by the user via
- * the SIOCSIFFLAGS ioctl. We stop any further transmissions being queued,
- * and then disable the interrupts. Finally we reset the chip. The effects
- * of the rest will be cleaned up by #el1_open. Always returns 0 indicating
- * a success.
- */
-
-static int el1_close(struct net_device *dev)
-{
- int ioaddr = dev->base_addr;
-
- if (el_debug > 2)
- pr_info("%s: Shutting down Ethernet card at %#x.\n",
- dev->name, ioaddr);
-
- netif_stop_queue(dev);
-
- /*
- * Free and disable the IRQ.
- */
-
- free_irq(dev->irq, dev);
- outb(AX_RESET, AX_CMD); /* Reset the chip */
-
- return 0;
-}
-
-/**
- * set_multicast_list:
- * @dev: The device to adjust
- *
- * Set or clear the multicast filter for this adaptor to use the best-effort
- * filtering supported. The 3c501 supports only three modes of filtering.
- * It always receives broadcasts and packets for itself. You can choose to
- * optionally receive all packets, or all multicast packets on top of this.
- */
-
-static void set_multicast_list(struct net_device *dev)
-{
- int ioaddr = dev->base_addr;
-
- if (dev->flags & IFF_PROMISC) {
- outb(RX_PROM, RX_CMD);
- inb(RX_STATUS);
- } else if (!netdev_mc_empty(dev) || dev->flags & IFF_ALLMULTI) {
- /* Multicast or all multicast is the same */
- outb(RX_MULT, RX_CMD);
- inb(RX_STATUS); /* Clear status. */
- } else {
- outb(RX_NORM, RX_CMD);
- inb(RX_STATUS);
- }
-}
-
-
-static void netdev_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info)
-{
- strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
- strlcpy(info->version, DRV_VERSION, sizeof(info->version));
- snprintf(info->bus_info, sizeof(info->bus_info), "ISA 0x%lx",
- dev->base_addr);
-}
-
-static u32 netdev_get_msglevel(struct net_device *dev)
-{
- return debug;
-}
-
-static void netdev_set_msglevel(struct net_device *dev, u32 level)
-{
- debug = level;
-}
-
-static const struct ethtool_ops netdev_ethtool_ops = {
- .get_drvinfo = netdev_get_drvinfo,
- .get_msglevel = netdev_get_msglevel,
- .set_msglevel = netdev_set_msglevel,
-};
-
-#ifdef MODULE
-
-static struct net_device *dev_3c501;
-
-module_param(io, int, 0);
-module_param(irq, int, 0);
-MODULE_PARM_DESC(io, "EtherLink I/O base address");
-MODULE_PARM_DESC(irq, "EtherLink IRQ number");
-
-/**
- * init_module:
- *
- * When the driver is loaded as a module this function is called. We fake up
- * a device structure with the base I/O and interrupt set as if it were being
- * called from Space.c. This minimises the extra code that would otherwise
- * be required.
- *
- * Returns 0 for success or -EIO if a card is not found. Returning an error
- * here also causes the module to be unloaded
- */
-
-int __init init_module(void)
-{
- dev_3c501 = el1_probe(-1);
- if (IS_ERR(dev_3c501))
- return PTR_ERR(dev_3c501);
- return 0;
-}
-
-/**
- * cleanup_module:
- *
- * The module is being unloaded. We unhook our network device from the system
- * and then free up the resources we took when the card was found.
- */
-
-void __exit cleanup_module(void)
-{
- struct net_device *dev = dev_3c501;
- unregister_netdev(dev);
- release_region(dev->base_addr, EL1_IO_EXTENT);
- free_netdev(dev);
-}
-
-#endif /* MODULE */
-
-MODULE_AUTHOR("Donald Becker, Alan Cox");
-MODULE_DESCRIPTION("Support for the ancient 3Com 3c501 ethernet card");
-MODULE_LICENSE("GPL");
-
projects / mirror_ubuntu-disco-kernel.git / commitdiff