1 /* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
2 Copyright 1999 Silicon Integrated System Corporation
3 Revision: 1.08.10 Apr. 2 2006
5 Modified from the driver which is originally written by Donald Becker.
7 This software may be used and distributed according to the terms
8 of the GNU General Public License (GPL), incorporated herein by reference.
9 Drivers based on this skeleton fall under the GPL and must retain
10 the authorship (implicit copyright) notice.
13 SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
14 preliminary Rev. 1.0 Jan. 14, 1998
15 SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
16 preliminary Rev. 1.0 Nov. 10, 1998
17 SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
18 preliminary Rev. 1.0 Jan. 18, 1998
20 Rev 1.08.10 Apr. 2 2006 Daniele Venzano add vlan (jumbo packets) support
21 Rev 1.08.09 Sep. 19 2005 Daniele Venzano add Wake on LAN support
22 Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages
23 Rev 1.08.07 Nov. 2 2003 Daniele Venzano <venza@brownhat.org> add suspend/resume support
24 Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support
25 Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary
26 Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support
27 Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function
28 Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem
29 Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY
30 Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix
31 Rev 1.07.11 Apr. 2 2001 Hui-Fen Hsu updates PCI drivers to use the new pci_set_dma_mask for kernel 2.4.3
32 Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support
33 Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup
34 Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support
35 Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix
36 Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning
37 Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig
38 Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support
39 Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E equalizer workaround rule
40 Rev 1.07.01 Aug. 08 2000 Ollie Lho minor update for SiS 630E and SiS 630E A1
41 Rev 1.07 Mar. 07 2000 Ollie Lho bug fix in Rx buffer ring
42 Rev 1.06.04 Feb. 11 2000 Jeff Garzik <jgarzik@pobox.com> softnet and init for kernel 2.4
43 Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release
44 Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed
45 Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com)
46 Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release
47 Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx
48 Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support
49 Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release
52 #include <linux/module.h>
53 #include <linux/moduleparam.h>
54 #include <linux/kernel.h>
55 #include <linux/sched.h>
56 #include <linux/string.h>
57 #include <linux/timer.h>
58 #include <linux/errno.h>
59 #include <linux/ioport.h>
60 #include <linux/slab.h>
61 #include <linux/interrupt.h>
62 #include <linux/pci.h>
63 #include <linux/netdevice.h>
64 #include <linux/init.h>
65 #include <linux/mii.h>
66 #include <linux/etherdevice.h>
67 #include <linux/skbuff.h>
68 #include <linux/delay.h>
69 #include <linux/ethtool.h>
70 #include <linux/crc32.h>
71 #include <linux/bitops.h>
72 #include <linux/dma-mapping.h>
74 #include <asm/processor.h> /* Processor type for cache alignment. */
77 #include <asm/uaccess.h> /* User space memory access functions */
81 #define SIS900_MODULE_NAME "sis900"
82 #define SIS900_DRV_VERSION "v1.08.10 Apr. 2 2006"
84 static const char version
[] __devinitconst
=
85 KERN_INFO
"sis900.c: " SIS900_DRV_VERSION
"\n";
87 static int max_interrupt_work
= 40;
88 static int multicast_filter_limit
= 128;
90 static int sis900_debug
= -1; /* Use SIS900_DEF_MSG as value */
92 #define SIS900_DEF_MSG \
98 /* Time in jiffies before concluding the transmitter is hung. */
99 #define TX_TIMEOUT (4*HZ)
105 static const char * card_names
[] = {
106 "SiS 900 PCI Fast Ethernet",
107 "SiS 7016 PCI Fast Ethernet"
109 static DEFINE_PCI_DEVICE_TABLE(sis900_pci_tbl
) = {
110 {PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_900
,
111 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, SIS_900
},
112 {PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_7016
,
113 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, SIS_7016
},
116 MODULE_DEVICE_TABLE (pci
, sis900_pci_tbl
);
118 static void sis900_read_mode(struct net_device
*net_dev
, int *speed
, int *duplex
);
120 static const struct mii_chip_info
{
129 } mii_chip_table
[] = {
130 { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN
},
131 { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN
},
132 { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN
},
133 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN
},
134 { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN
},
135 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN
},
136 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME
},
137 { "ICS LAN PHY", 0x0015, 0xF440, LAN
},
138 { "ICS LAN PHY", 0x0143, 0xBC70, LAN
},
139 { "NS 83851 PHY", 0x2000, 0x5C20, MIX
},
140 { "NS 83847 PHY", 0x2000, 0x5C30, MIX
},
141 { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN
},
142 { "VIA 6103 PHY", 0x0101, 0x8f20, LAN
},
147 struct mii_phy
* next
;
155 typedef struct _BufferDesc
{
161 struct sis900_private
{
162 struct pci_dev
* pci_dev
;
166 struct mii_phy
* mii
;
167 struct mii_phy
* first_mii
; /* record the first mii structure */
168 unsigned int cur_phy
;
169 struct mii_if_info mii_info
;
171 void __iomem
*ioaddr
;
173 struct timer_list timer
; /* Link status detection timer. */
174 u8 autong_complete
; /* 1: auto-negotiate complete */
178 unsigned int cur_rx
, dirty_rx
; /* producer/comsumer pointers for Tx/Rx ring */
179 unsigned int cur_tx
, dirty_tx
;
181 /* The saved address of a sent/receive-in-place packet buffer */
182 struct sk_buff
*tx_skbuff
[NUM_TX_DESC
];
183 struct sk_buff
*rx_skbuff
[NUM_RX_DESC
];
187 dma_addr_t tx_ring_dma
;
188 dma_addr_t rx_ring_dma
;
190 unsigned int tx_full
; /* The Tx queue is full. */
195 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
196 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
197 MODULE_LICENSE("GPL");
199 module_param(multicast_filter_limit
, int, 0444);
200 module_param(max_interrupt_work
, int, 0444);
201 module_param(sis900_debug
, int, 0444);
202 MODULE_PARM_DESC(multicast_filter_limit
, "SiS 900/7016 maximum number of filtered multicast addresses");
203 MODULE_PARM_DESC(max_interrupt_work
, "SiS 900/7016 maximum events handled per interrupt");
204 MODULE_PARM_DESC(sis900_debug
, "SiS 900/7016 bitmapped debugging message level");
206 #define sw32(reg, val) iowrite32(val, ioaddr + (reg))
207 #define sw8(reg, val) iowrite8(val, ioaddr + (reg))
208 #define sr32(reg) ioread32(ioaddr + (reg))
209 #define sr16(reg) ioread16(ioaddr + (reg))
211 #ifdef CONFIG_NET_POLL_CONTROLLER
212 static void sis900_poll(struct net_device
*dev
);
214 static int sis900_open(struct net_device
*net_dev
);
215 static int sis900_mii_probe (struct net_device
* net_dev
);
216 static void sis900_init_rxfilter (struct net_device
* net_dev
);
217 static u16
read_eeprom(void __iomem
*ioaddr
, int location
);
218 static int mdio_read(struct net_device
*net_dev
, int phy_id
, int location
);
219 static void mdio_write(struct net_device
*net_dev
, int phy_id
, int location
, int val
);
220 static void sis900_timer(unsigned long data
);
221 static void sis900_check_mode (struct net_device
*net_dev
, struct mii_phy
*mii_phy
);
222 static void sis900_tx_timeout(struct net_device
*net_dev
);
223 static void sis900_init_tx_ring(struct net_device
*net_dev
);
224 static void sis900_init_rx_ring(struct net_device
*net_dev
);
225 static netdev_tx_t
sis900_start_xmit(struct sk_buff
*skb
,
226 struct net_device
*net_dev
);
227 static int sis900_rx(struct net_device
*net_dev
);
228 static void sis900_finish_xmit (struct net_device
*net_dev
);
229 static irqreturn_t
sis900_interrupt(int irq
, void *dev_instance
);
230 static int sis900_close(struct net_device
*net_dev
);
231 static int mii_ioctl(struct net_device
*net_dev
, struct ifreq
*rq
, int cmd
);
232 static u16
sis900_mcast_bitnr(u8
*addr
, u8 revision
);
233 static void set_rx_mode(struct net_device
*net_dev
);
234 static void sis900_reset(struct net_device
*net_dev
);
235 static void sis630_set_eq(struct net_device
*net_dev
, u8 revision
);
236 static int sis900_set_config(struct net_device
*dev
, struct ifmap
*map
);
237 static u16
sis900_default_phy(struct net_device
* net_dev
);
238 static void sis900_set_capability( struct net_device
*net_dev
,struct mii_phy
*phy
);
239 static u16
sis900_reset_phy(struct net_device
*net_dev
, int phy_addr
);
240 static void sis900_auto_negotiate(struct net_device
*net_dev
, int phy_addr
);
241 static void sis900_set_mode(struct sis900_private
*, int speed
, int duplex
);
242 static const struct ethtool_ops sis900_ethtool_ops
;
245 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
246 * @pci_dev: the sis900 pci device
247 * @net_dev: the net device to get address for
249 * Older SiS900 and friends, use EEPROM to store MAC address.
250 * MAC address is read from read_eeprom() into @net_dev->dev_addr and
251 * @net_dev->perm_addr.
254 static int __devinit
sis900_get_mac_addr(struct pci_dev
* pci_dev
, struct net_device
*net_dev
)
256 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
257 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
261 /* check to see if we have sane EEPROM */
262 signature
= (u16
) read_eeprom(ioaddr
, EEPROMSignature
);
263 if (signature
== 0xffff || signature
== 0x0000) {
264 printk (KERN_WARNING
"%s: Error EERPOM read %x\n",
265 pci_name(pci_dev
), signature
);
269 /* get MAC address from EEPROM */
270 for (i
= 0; i
< 3; i
++)
271 ((u16
*)(net_dev
->dev_addr
))[i
] = read_eeprom(ioaddr
, i
+EEPROMMACAddr
);
273 /* Store MAC Address in perm_addr */
274 memcpy(net_dev
->perm_addr
, net_dev
->dev_addr
, ETH_ALEN
);
280 * sis630e_get_mac_addr - Get MAC address for SiS630E model
281 * @pci_dev: the sis900 pci device
282 * @net_dev: the net device to get address for
284 * SiS630E model, use APC CMOS RAM to store MAC address.
285 * APC CMOS RAM is accessed through ISA bridge.
286 * MAC address is read into @net_dev->dev_addr and
287 * @net_dev->perm_addr.
290 static int __devinit
sis630e_get_mac_addr(struct pci_dev
* pci_dev
,
291 struct net_device
*net_dev
)
293 struct pci_dev
*isa_bridge
= NULL
;
297 isa_bridge
= pci_get_device(PCI_VENDOR_ID_SI
, 0x0008, isa_bridge
);
299 isa_bridge
= pci_get_device(PCI_VENDOR_ID_SI
, 0x0018, isa_bridge
);
301 printk(KERN_WARNING
"%s: Can not find ISA bridge\n",
305 pci_read_config_byte(isa_bridge
, 0x48, ®
);
306 pci_write_config_byte(isa_bridge
, 0x48, reg
| 0x40);
308 for (i
= 0; i
< 6; i
++) {
309 outb(0x09 + i
, 0x70);
310 ((u8
*)(net_dev
->dev_addr
))[i
] = inb(0x71);
313 /* Store MAC Address in perm_addr */
314 memcpy(net_dev
->perm_addr
, net_dev
->dev_addr
, ETH_ALEN
);
316 pci_write_config_byte(isa_bridge
, 0x48, reg
& ~0x40);
317 pci_dev_put(isa_bridge
);
324 * sis635_get_mac_addr - Get MAC address for SIS635 model
325 * @pci_dev: the sis900 pci device
326 * @net_dev: the net device to get address for
328 * SiS635 model, set MAC Reload Bit to load Mac address from APC
329 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
330 * @net_dev->dev_addr and @net_dev->perm_addr.
333 static int __devinit
sis635_get_mac_addr(struct pci_dev
* pci_dev
,
334 struct net_device
*net_dev
)
336 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
337 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
341 rfcrSave
= sr32(rfcr
);
343 sw32(cr
, rfcrSave
| RELOAD
);
346 /* disable packet filtering before setting filter */
347 sw32(rfcr
, rfcrSave
& ~RFEN
);
349 /* load MAC addr to filter data register */
350 for (i
= 0 ; i
< 3 ; i
++) {
351 sw32(rfcr
, (i
<< RFADDR_shift
));
352 *( ((u16
*)net_dev
->dev_addr
) + i
) = sr16(rfdr
);
355 /* Store MAC Address in perm_addr */
356 memcpy(net_dev
->perm_addr
, net_dev
->dev_addr
, ETH_ALEN
);
358 /* enable packet filtering */
359 sw32(rfcr
, rfcrSave
| RFEN
);
365 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
366 * @pci_dev: the sis900 pci device
367 * @net_dev: the net device to get address for
369 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
371 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
372 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
373 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
374 * EEDONE signal to refuse EEPROM access by LAN.
375 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
376 * The signature field in SiS962 or SiS963 spec is meaningless.
377 * MAC address is read into @net_dev->dev_addr and @net_dev->perm_addr.
380 static int __devinit
sis96x_get_mac_addr(struct pci_dev
* pci_dev
,
381 struct net_device
*net_dev
)
383 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
384 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
388 for (wait
= 0; wait
< 2000; wait
++) {
389 if (sr32(mear
) & EEGNT
) {
390 u16
*mac
= (u16
*)net_dev
->dev_addr
;
393 /* get MAC address from EEPROM */
394 for (i
= 0; i
< 3; i
++)
395 mac
[i
] = read_eeprom(ioaddr
, i
+ EEPROMMACAddr
);
397 /* Store MAC Address in perm_addr */
398 memcpy(net_dev
->perm_addr
, net_dev
->dev_addr
, ETH_ALEN
);
409 static const struct net_device_ops sis900_netdev_ops
= {
410 .ndo_open
= sis900_open
,
411 .ndo_stop
= sis900_close
,
412 .ndo_start_xmit
= sis900_start_xmit
,
413 .ndo_set_config
= sis900_set_config
,
414 .ndo_set_rx_mode
= set_rx_mode
,
415 .ndo_change_mtu
= eth_change_mtu
,
416 .ndo_validate_addr
= eth_validate_addr
,
417 .ndo_set_mac_address
= eth_mac_addr
,
418 .ndo_do_ioctl
= mii_ioctl
,
419 .ndo_tx_timeout
= sis900_tx_timeout
,
420 #ifdef CONFIG_NET_POLL_CONTROLLER
421 .ndo_poll_controller
= sis900_poll
,
426 * sis900_probe - Probe for sis900 device
427 * @pci_dev: the sis900 pci device
428 * @pci_id: the pci device ID
430 * Check and probe sis900 net device for @pci_dev.
431 * Get mac address according to the chip revision,
432 * and assign SiS900-specific entries in the device structure.
433 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
436 static int __devinit
sis900_probe(struct pci_dev
*pci_dev
,
437 const struct pci_device_id
*pci_id
)
439 struct sis900_private
*sis_priv
;
440 struct net_device
*net_dev
;
444 void __iomem
*ioaddr
;
446 const char *card_name
= card_names
[pci_id
->driver_data
];
447 const char *dev_name
= pci_name(pci_dev
);
449 /* when built into the kernel, we only print version if device is found */
451 static int printed_version
;
452 if (!printed_version
++)
456 /* setup various bits in PCI command register */
457 ret
= pci_enable_device(pci_dev
);
460 i
= pci_set_dma_mask(pci_dev
, DMA_BIT_MASK(32));
462 printk(KERN_ERR
"sis900.c: architecture does not support "
463 "32bit PCI busmaster DMA\n");
467 pci_set_master(pci_dev
);
469 net_dev
= alloc_etherdev(sizeof(struct sis900_private
));
472 SET_NETDEV_DEV(net_dev
, &pci_dev
->dev
);
474 /* We do a request_region() to register /proc/ioports info. */
475 ret
= pci_request_regions(pci_dev
, "sis900");
480 ioaddr
= pci_iomap(pci_dev
, 0, 0);
483 goto err_out_cleardev
;
486 sis_priv
= netdev_priv(net_dev
);
487 sis_priv
->ioaddr
= ioaddr
;
488 sis_priv
->pci_dev
= pci_dev
;
489 spin_lock_init(&sis_priv
->lock
);
491 pci_set_drvdata(pci_dev
, net_dev
);
493 ring_space
= pci_alloc_consistent(pci_dev
, TX_TOTAL_SIZE
, &ring_dma
);
498 sis_priv
->tx_ring
= ring_space
;
499 sis_priv
->tx_ring_dma
= ring_dma
;
501 ring_space
= pci_alloc_consistent(pci_dev
, RX_TOTAL_SIZE
, &ring_dma
);
506 sis_priv
->rx_ring
= ring_space
;
507 sis_priv
->rx_ring_dma
= ring_dma
;
509 /* The SiS900-specific entries in the device structure. */
510 net_dev
->netdev_ops
= &sis900_netdev_ops
;
511 net_dev
->watchdog_timeo
= TX_TIMEOUT
;
512 net_dev
->ethtool_ops
= &sis900_ethtool_ops
;
514 if (sis900_debug
> 0)
515 sis_priv
->msg_enable
= sis900_debug
;
517 sis_priv
->msg_enable
= SIS900_DEF_MSG
;
519 sis_priv
->mii_info
.dev
= net_dev
;
520 sis_priv
->mii_info
.mdio_read
= mdio_read
;
521 sis_priv
->mii_info
.mdio_write
= mdio_write
;
522 sis_priv
->mii_info
.phy_id_mask
= 0x1f;
523 sis_priv
->mii_info
.reg_num_mask
= 0x1f;
525 /* Get Mac address according to the chip revision */
526 sis_priv
->chipset_rev
= pci_dev
->revision
;
527 if(netif_msg_probe(sis_priv
))
528 printk(KERN_DEBUG
"%s: detected revision %2.2x, "
529 "trying to get MAC address...\n",
530 dev_name
, sis_priv
->chipset_rev
);
533 if (sis_priv
->chipset_rev
== SIS630E_900_REV
)
534 ret
= sis630e_get_mac_addr(pci_dev
, net_dev
);
535 else if ((sis_priv
->chipset_rev
> 0x81) && (sis_priv
->chipset_rev
<= 0x90) )
536 ret
= sis635_get_mac_addr(pci_dev
, net_dev
);
537 else if (sis_priv
->chipset_rev
== SIS96x_900_REV
)
538 ret
= sis96x_get_mac_addr(pci_dev
, net_dev
);
540 ret
= sis900_get_mac_addr(pci_dev
, net_dev
);
542 if (!ret
|| !is_valid_ether_addr(net_dev
->dev_addr
)) {
543 eth_hw_addr_random(net_dev
);
544 printk(KERN_WARNING
"%s: Unreadable or invalid MAC address,"
545 "using random generated one\n", dev_name
);
548 /* 630ET : set the mii access mode as software-mode */
549 if (sis_priv
->chipset_rev
== SIS630ET_900_REV
)
550 sw32(cr
, ACCESSMODE
| sr32(cr
));
552 /* probe for mii transceiver */
553 if (sis900_mii_probe(net_dev
) == 0) {
554 printk(KERN_WARNING
"%s: Error probing MII device.\n",
560 /* save our host bridge revision */
561 dev
= pci_get_device(PCI_VENDOR_ID_SI
, PCI_DEVICE_ID_SI_630
, NULL
);
563 sis_priv
->host_bridge_rev
= dev
->revision
;
567 ret
= register_netdev(net_dev
);
571 /* print some information about our NIC */
572 printk(KERN_INFO
"%s: %s at 0x%p, IRQ %d, %pM\n",
573 net_dev
->name
, card_name
, ioaddr
, pci_dev
->irq
,
576 /* Detect Wake on Lan support */
577 ret
= (sr32(CFGPMC
) & PMESP
) >> 27;
578 if (netif_msg_probe(sis_priv
) && (ret
& PME_D3C
) == 0)
579 printk(KERN_INFO
"%s: Wake on LAN only available from suspend to RAM.", net_dev
->name
);
584 pci_free_consistent(pci_dev
, RX_TOTAL_SIZE
, sis_priv
->rx_ring
,
585 sis_priv
->rx_ring_dma
);
587 pci_free_consistent(pci_dev
, TX_TOTAL_SIZE
, sis_priv
->tx_ring
,
588 sis_priv
->tx_ring_dma
);
590 pci_iounmap(pci_dev
, ioaddr
);
592 pci_set_drvdata(pci_dev
, NULL
);
593 pci_release_regions(pci_dev
);
595 free_netdev(net_dev
);
600 * sis900_mii_probe - Probe MII PHY for sis900
601 * @net_dev: the net device to probe for
603 * Search for total of 32 possible mii phy addresses.
604 * Identify and set current phy if found one,
605 * return error if it failed to found.
608 static int __devinit
sis900_mii_probe(struct net_device
* net_dev
)
610 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
611 const char *dev_name
= pci_name(sis_priv
->pci_dev
);
612 u16 poll_bit
= MII_STAT_LINK
, status
= 0;
613 unsigned long timeout
= jiffies
+ 5 * HZ
;
616 sis_priv
->mii
= NULL
;
618 /* search for total of 32 possible mii phy addresses */
619 for (phy_addr
= 0; phy_addr
< 32; phy_addr
++) {
620 struct mii_phy
* mii_phy
= NULL
;
625 for(i
= 0; i
< 2; i
++)
626 mii_status
= mdio_read(net_dev
, phy_addr
, MII_STATUS
);
628 if (mii_status
== 0xffff || mii_status
== 0x0000) {
629 if (netif_msg_probe(sis_priv
))
630 printk(KERN_DEBUG
"%s: MII at address %d"
636 if ((mii_phy
= kmalloc(sizeof(struct mii_phy
), GFP_KERNEL
)) == NULL
) {
637 mii_phy
= sis_priv
->first_mii
;
641 mii_phy
= mii_phy
->next
;
647 mii_phy
->phy_id0
= mdio_read(net_dev
, phy_addr
, MII_PHY_ID0
);
648 mii_phy
->phy_id1
= mdio_read(net_dev
, phy_addr
, MII_PHY_ID1
);
649 mii_phy
->phy_addr
= phy_addr
;
650 mii_phy
->status
= mii_status
;
651 mii_phy
->next
= sis_priv
->mii
;
652 sis_priv
->mii
= mii_phy
;
653 sis_priv
->first_mii
= mii_phy
;
655 for (i
= 0; mii_chip_table
[i
].phy_id1
; i
++)
656 if ((mii_phy
->phy_id0
== mii_chip_table
[i
].phy_id0
) &&
657 ((mii_phy
->phy_id1
& 0xFFF0) == mii_chip_table
[i
].phy_id1
)){
658 mii_phy
->phy_types
= mii_chip_table
[i
].phy_types
;
659 if (mii_chip_table
[i
].phy_types
== MIX
)
661 (mii_status
& (MII_STAT_CAN_TX_FDX
| MII_STAT_CAN_TX
)) ? LAN
: HOME
;
662 printk(KERN_INFO
"%s: %s transceiver found "
665 mii_chip_table
[i
].name
,
670 if( !mii_chip_table
[i
].phy_id1
) {
671 printk(KERN_INFO
"%s: Unknown PHY transceiver found at address %d.\n",
673 mii_phy
->phy_types
= UNKNOWN
;
677 if (sis_priv
->mii
== NULL
) {
678 printk(KERN_INFO
"%s: No MII transceivers found!\n", dev_name
);
682 /* select default PHY for mac */
683 sis_priv
->mii
= NULL
;
684 sis900_default_phy( net_dev
);
686 /* Reset phy if default phy is internal sis900 */
687 if ((sis_priv
->mii
->phy_id0
== 0x001D) &&
688 ((sis_priv
->mii
->phy_id1
&0xFFF0) == 0x8000))
689 status
= sis900_reset_phy(net_dev
, sis_priv
->cur_phy
);
691 /* workaround for ICS1893 PHY */
692 if ((sis_priv
->mii
->phy_id0
== 0x0015) &&
693 ((sis_priv
->mii
->phy_id1
&0xFFF0) == 0xF440))
694 mdio_write(net_dev
, sis_priv
->cur_phy
, 0x0018, 0xD200);
696 if(status
& MII_STAT_LINK
){
700 poll_bit
^= (mdio_read(net_dev
, sis_priv
->cur_phy
, MII_STATUS
) & poll_bit
);
701 if (time_after_eq(jiffies
, timeout
)) {
702 printk(KERN_WARNING
"%s: reset phy and link down now\n",
709 if (sis_priv
->chipset_rev
== SIS630E_900_REV
) {
710 /* SiS 630E has some bugs on default value of PHY registers */
711 mdio_write(net_dev
, sis_priv
->cur_phy
, MII_ANADV
, 0x05e1);
712 mdio_write(net_dev
, sis_priv
->cur_phy
, MII_CONFIG1
, 0x22);
713 mdio_write(net_dev
, sis_priv
->cur_phy
, MII_CONFIG2
, 0xff00);
714 mdio_write(net_dev
, sis_priv
->cur_phy
, MII_MASK
, 0xffc0);
715 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
718 if (sis_priv
->mii
->status
& MII_STAT_LINK
)
719 netif_carrier_on(net_dev
);
721 netif_carrier_off(net_dev
);
727 * sis900_default_phy - Select default PHY for sis900 mac.
728 * @net_dev: the net device to probe for
730 * Select first detected PHY with link as default.
731 * If no one is link on, select PHY whose types is HOME as default.
732 * If HOME doesn't exist, select LAN.
735 static u16
sis900_default_phy(struct net_device
* net_dev
)
737 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
738 struct mii_phy
*phy
= NULL
, *phy_home
= NULL
,
739 *default_phy
= NULL
, *phy_lan
= NULL
;
742 for (phy
=sis_priv
->first_mii
; phy
; phy
=phy
->next
) {
743 status
= mdio_read(net_dev
, phy
->phy_addr
, MII_STATUS
);
744 status
= mdio_read(net_dev
, phy
->phy_addr
, MII_STATUS
);
746 /* Link ON & Not select default PHY & not ghost PHY */
747 if ((status
& MII_STAT_LINK
) && !default_phy
&&
748 (phy
->phy_types
!= UNKNOWN
))
751 status
= mdio_read(net_dev
, phy
->phy_addr
, MII_CONTROL
);
752 mdio_write(net_dev
, phy
->phy_addr
, MII_CONTROL
,
753 status
| MII_CNTL_AUTO
| MII_CNTL_ISOLATE
);
754 if (phy
->phy_types
== HOME
)
756 else if(phy
->phy_types
== LAN
)
761 if (!default_phy
&& phy_home
)
762 default_phy
= phy_home
;
763 else if (!default_phy
&& phy_lan
)
764 default_phy
= phy_lan
;
765 else if (!default_phy
)
766 default_phy
= sis_priv
->first_mii
;
768 if (sis_priv
->mii
!= default_phy
) {
769 sis_priv
->mii
= default_phy
;
770 sis_priv
->cur_phy
= default_phy
->phy_addr
;
771 printk(KERN_INFO
"%s: Using transceiver found at address %d as default\n",
772 pci_name(sis_priv
->pci_dev
), sis_priv
->cur_phy
);
775 sis_priv
->mii_info
.phy_id
= sis_priv
->cur_phy
;
777 status
= mdio_read(net_dev
, sis_priv
->cur_phy
, MII_CONTROL
);
778 status
&= (~MII_CNTL_ISOLATE
);
780 mdio_write(net_dev
, sis_priv
->cur_phy
, MII_CONTROL
, status
);
781 status
= mdio_read(net_dev
, sis_priv
->cur_phy
, MII_STATUS
);
782 status
= mdio_read(net_dev
, sis_priv
->cur_phy
, MII_STATUS
);
789 * sis900_set_capability - set the media capability of network adapter.
790 * @net_dev : the net device to probe for
793 * Set the media capability of network adapter according to
794 * mii status register. It's necessary before auto-negotiate.
797 static void sis900_set_capability(struct net_device
*net_dev
, struct mii_phy
*phy
)
802 status
= mdio_read(net_dev
, phy
->phy_addr
, MII_STATUS
);
803 status
= mdio_read(net_dev
, phy
->phy_addr
, MII_STATUS
);
805 cap
= MII_NWAY_CSMA_CD
|
806 ((phy
->status
& MII_STAT_CAN_TX_FDX
)? MII_NWAY_TX_FDX
:0) |
807 ((phy
->status
& MII_STAT_CAN_TX
) ? MII_NWAY_TX
:0) |
808 ((phy
->status
& MII_STAT_CAN_T_FDX
) ? MII_NWAY_T_FDX
:0)|
809 ((phy
->status
& MII_STAT_CAN_T
) ? MII_NWAY_T
:0);
811 mdio_write(net_dev
, phy
->phy_addr
, MII_ANADV
, cap
);
815 /* Delay between EEPROM clock transitions. */
816 #define eeprom_delay() sr32(mear)
819 * read_eeprom - Read Serial EEPROM
820 * @ioaddr: base i/o address
821 * @location: the EEPROM location to read
823 * Read Serial EEPROM through EEPROM Access Register.
824 * Note that location is in word (16 bits) unit
827 static u16 __devinit
read_eeprom(void __iomem
*ioaddr
, int location
)
829 u32 read_cmd
= location
| EEread
;
838 /* Shift the read command (9) bits out. */
839 for (i
= 8; i
>= 0; i
--) {
840 u32 dataval
= (read_cmd
& (1 << i
)) ? EEDI
| EECS
: EECS
;
844 sw32(mear
, dataval
| EECLK
);
850 /* read the 16-bits data in */
851 for (i
= 16; i
> 0; i
--) {
854 sw32(mear
, EECS
| EECLK
);
856 retval
= (retval
<< 1) | ((sr32(mear
) & EEDO
) ? 1 : 0);
860 /* Terminate the EEPROM access. */
867 /* Read and write the MII management registers using software-generated
868 serial MDIO protocol. Note that the command bits and data bits are
869 send out separately */
870 #define mdio_delay() sr32(mear)
872 static void mdio_idle(struct sis900_private
*sp
)
874 void __iomem
*ioaddr
= sp
->ioaddr
;
876 sw32(mear
, MDIO
| MDDIR
);
878 sw32(mear
, MDIO
| MDDIR
| MDC
);
881 /* Synchronize the MII management interface by shifting 32 one bits out. */
882 static void mdio_reset(struct sis900_private
*sp
)
884 void __iomem
*ioaddr
= sp
->ioaddr
;
887 for (i
= 31; i
>= 0; i
--) {
888 sw32(mear
, MDDIR
| MDIO
);
890 sw32(mear
, MDDIR
| MDIO
| MDC
);
896 * mdio_read - read MII PHY register
897 * @net_dev: the net device to read
898 * @phy_id: the phy address to read
899 * @location: the phy regiester id to read
901 * Read MII registers through MDIO and MDC
902 * using MDIO management frame structure and protocol(defined by ISO/IEC).
903 * Please see SiS7014 or ICS spec
906 static int mdio_read(struct net_device
*net_dev
, int phy_id
, int location
)
908 int mii_cmd
= MIIread
|(phy_id
<<MIIpmdShift
)|(location
<<MIIregShift
);
909 struct sis900_private
*sp
= netdev_priv(net_dev
);
910 void __iomem
*ioaddr
= sp
->ioaddr
;
917 for (i
= 15; i
>= 0; i
--) {
918 int dataval
= (mii_cmd
& (1 << i
)) ? MDDIR
| MDIO
: MDDIR
;
922 sw32(mear
, dataval
| MDC
);
926 /* Read the 16 data bits. */
927 for (i
= 16; i
> 0; i
--) {
930 retval
= (retval
<< 1) | ((sr32(mear
) & MDIO
) ? 1 : 0);
940 * mdio_write - write MII PHY register
941 * @net_dev: the net device to write
942 * @phy_id: the phy address to write
943 * @location: the phy regiester id to write
944 * @value: the register value to write with
946 * Write MII registers with @value through MDIO and MDC
947 * using MDIO management frame structure and protocol(defined by ISO/IEC)
948 * please see SiS7014 or ICS spec
951 static void mdio_write(struct net_device
*net_dev
, int phy_id
, int location
,
954 int mii_cmd
= MIIwrite
|(phy_id
<<MIIpmdShift
)|(location
<<MIIregShift
);
955 struct sis900_private
*sp
= netdev_priv(net_dev
);
956 void __iomem
*ioaddr
= sp
->ioaddr
;
962 /* Shift the command bits out. */
963 for (i
= 15; i
>= 0; i
--) {
964 int dataval
= (mii_cmd
& (1 << i
)) ? MDDIR
| MDIO
: MDDIR
;
968 sw8(mear
, dataval
| MDC
);
973 /* Shift the value bits out. */
974 for (i
= 15; i
>= 0; i
--) {
975 int dataval
= (value
& (1 << i
)) ? MDDIR
| MDIO
: MDDIR
;
979 sw32(mear
, dataval
| MDC
);
984 /* Clear out extra bits. */
985 for (i
= 2; i
> 0; i
--) {
996 * sis900_reset_phy - reset sis900 mii phy.
997 * @net_dev: the net device to write
998 * @phy_addr: default phy address
1000 * Some specific phy can't work properly without reset.
1001 * This function will be called during initialization and
1002 * link status change from ON to DOWN.
1005 static u16
sis900_reset_phy(struct net_device
*net_dev
, int phy_addr
)
1010 for (i
= 0; i
< 2; i
++)
1011 status
= mdio_read(net_dev
, phy_addr
, MII_STATUS
);
1013 mdio_write( net_dev
, phy_addr
, MII_CONTROL
, MII_CNTL_RESET
);
1018 #ifdef CONFIG_NET_POLL_CONTROLLER
1020 * Polling 'interrupt' - used by things like netconsole to send skbs
1021 * without having to re-enable interrupts. It's not called while
1022 * the interrupt routine is executing.
1024 static void sis900_poll(struct net_device
*dev
)
1026 struct sis900_private
*sp
= netdev_priv(dev
);
1027 const int irq
= sp
->pci_dev
->irq
;
1030 sis900_interrupt(irq
, dev
);
1036 * sis900_open - open sis900 device
1037 * @net_dev: the net device to open
1039 * Do some initialization and start net interface.
1040 * enable interrupts and set sis900 timer.
1044 sis900_open(struct net_device
*net_dev
)
1046 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1047 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
1050 /* Soft reset the chip. */
1051 sis900_reset(net_dev
);
1053 /* Equalizer workaround Rule */
1054 sis630_set_eq(net_dev
, sis_priv
->chipset_rev
);
1056 ret
= request_irq(sis_priv
->pci_dev
->irq
, sis900_interrupt
, IRQF_SHARED
,
1057 net_dev
->name
, net_dev
);
1061 sis900_init_rxfilter(net_dev
);
1063 sis900_init_tx_ring(net_dev
);
1064 sis900_init_rx_ring(net_dev
);
1066 set_rx_mode(net_dev
);
1068 netif_start_queue(net_dev
);
1070 /* Workaround for EDB */
1071 sis900_set_mode(sis_priv
, HW_SPEED_10_MBPS
, FDX_CAPABLE_HALF_SELECTED
);
1073 /* Enable all known interrupts by setting the interrupt mask. */
1074 sw32(imr
, RxSOVR
| RxORN
| RxERR
| RxOK
| TxURN
| TxERR
| TxIDLE
);
1075 sw32(cr
, RxENA
| sr32(cr
));
1078 sis900_check_mode(net_dev
, sis_priv
->mii
);
1080 /* Set the timer to switch to check for link beat and perhaps switch
1081 to an alternate media type. */
1082 init_timer(&sis_priv
->timer
);
1083 sis_priv
->timer
.expires
= jiffies
+ HZ
;
1084 sis_priv
->timer
.data
= (unsigned long)net_dev
;
1085 sis_priv
->timer
.function
= sis900_timer
;
1086 add_timer(&sis_priv
->timer
);
1092 * sis900_init_rxfilter - Initialize the Rx filter
1093 * @net_dev: the net device to initialize for
1095 * Set receive filter address to our MAC address
1096 * and enable packet filtering.
1100 sis900_init_rxfilter (struct net_device
* net_dev
)
1102 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1103 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
1107 rfcrSave
= sr32(rfcr
);
1109 /* disable packet filtering before setting filter */
1110 sw32(rfcr
, rfcrSave
& ~RFEN
);
1112 /* load MAC addr to filter data register */
1113 for (i
= 0 ; i
< 3 ; i
++) {
1114 u32 w
= (u32
) *((u16
*)(net_dev
->dev_addr
)+i
);
1116 sw32(rfcr
, i
<< RFADDR_shift
);
1119 if (netif_msg_hw(sis_priv
)) {
1120 printk(KERN_DEBUG
"%s: Receive Filter Addrss[%d]=%x\n",
1121 net_dev
->name
, i
, sr32(rfdr
));
1125 /* enable packet filtering */
1126 sw32(rfcr
, rfcrSave
| RFEN
);
1130 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1131 * @net_dev: the net device to initialize for
1133 * Initialize the Tx descriptor ring,
1137 sis900_init_tx_ring(struct net_device
*net_dev
)
1139 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1140 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
1143 sis_priv
->tx_full
= 0;
1144 sis_priv
->dirty_tx
= sis_priv
->cur_tx
= 0;
1146 for (i
= 0; i
< NUM_TX_DESC
; i
++) {
1147 sis_priv
->tx_skbuff
[i
] = NULL
;
1149 sis_priv
->tx_ring
[i
].link
= sis_priv
->tx_ring_dma
+
1150 ((i
+1)%NUM_TX_DESC
)*sizeof(BufferDesc
);
1151 sis_priv
->tx_ring
[i
].cmdsts
= 0;
1152 sis_priv
->tx_ring
[i
].bufptr
= 0;
1155 /* load Transmit Descriptor Register */
1156 sw32(txdp
, sis_priv
->tx_ring_dma
);
1157 if (netif_msg_hw(sis_priv
))
1158 printk(KERN_DEBUG
"%s: TX descriptor register loaded with: %8.8x\n",
1159 net_dev
->name
, sr32(txdp
));
1163 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1164 * @net_dev: the net device to initialize for
1166 * Initialize the Rx descriptor ring,
1167 * and pre-allocate recevie buffers (socket buffer)
1171 sis900_init_rx_ring(struct net_device
*net_dev
)
1173 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1174 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
1177 sis_priv
->cur_rx
= 0;
1178 sis_priv
->dirty_rx
= 0;
1180 /* init RX descriptor */
1181 for (i
= 0; i
< NUM_RX_DESC
; i
++) {
1182 sis_priv
->rx_skbuff
[i
] = NULL
;
1184 sis_priv
->rx_ring
[i
].link
= sis_priv
->rx_ring_dma
+
1185 ((i
+1)%NUM_RX_DESC
)*sizeof(BufferDesc
);
1186 sis_priv
->rx_ring
[i
].cmdsts
= 0;
1187 sis_priv
->rx_ring
[i
].bufptr
= 0;
1190 /* allocate sock buffers */
1191 for (i
= 0; i
< NUM_RX_DESC
; i
++) {
1192 struct sk_buff
*skb
;
1194 if ((skb
= netdev_alloc_skb(net_dev
, RX_BUF_SIZE
)) == NULL
) {
1195 /* not enough memory for skbuff, this makes a "hole"
1196 on the buffer ring, it is not clear how the
1197 hardware will react to this kind of degenerated
1201 sis_priv
->rx_skbuff
[i
] = skb
;
1202 sis_priv
->rx_ring
[i
].cmdsts
= RX_BUF_SIZE
;
1203 sis_priv
->rx_ring
[i
].bufptr
= pci_map_single(sis_priv
->pci_dev
,
1204 skb
->data
, RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
1206 sis_priv
->dirty_rx
= (unsigned int) (i
- NUM_RX_DESC
);
1208 /* load Receive Descriptor Register */
1209 sw32(rxdp
, sis_priv
->rx_ring_dma
);
1210 if (netif_msg_hw(sis_priv
))
1211 printk(KERN_DEBUG
"%s: RX descriptor register loaded with: %8.8x\n",
1212 net_dev
->name
, sr32(rxdp
));
1216 * sis630_set_eq - set phy equalizer value for 630 LAN
1217 * @net_dev: the net device to set equalizer value
1218 * @revision: 630 LAN revision number
1220 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1221 * PHY register 14h(Test)
1222 * Bit 14: 0 -- Automatically detect (default)
1223 * 1 -- Manually set Equalizer filter
1224 * Bit 13: 0 -- (Default)
1225 * 1 -- Speed up convergence of equalizer setting
1226 * Bit 9 : 0 -- (Default)
1227 * 1 -- Disable Baseline Wander
1228 * Bit 3~7 -- Equalizer filter setting
1229 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1230 * Then calculate equalizer value
1231 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1232 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1233 * Calculate Equalizer value:
1234 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-detect proper equalizer value.
1235 * When the equalizer is stable, this value is not a fixed value. It will be within
1236 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1237 * 0 <= max <= 4 --> set equalizer to max
1238 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1239 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1242 static void sis630_set_eq(struct net_device
*net_dev
, u8 revision
)
1244 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1245 u16 reg14h
, eq_value
=0, max_value
=0, min_value
=0;
1248 if ( !(revision
== SIS630E_900_REV
|| revision
== SIS630EA1_900_REV
||
1249 revision
== SIS630A_900_REV
|| revision
== SIS630ET_900_REV
) )
1252 if (netif_carrier_ok(net_dev
)) {
1253 reg14h
= mdio_read(net_dev
, sis_priv
->cur_phy
, MII_RESV
);
1254 mdio_write(net_dev
, sis_priv
->cur_phy
, MII_RESV
,
1255 (0x2200 | reg14h
) & 0xBFFF);
1256 for (i
=0; i
< maxcount
; i
++) {
1257 eq_value
= (0x00F8 & mdio_read(net_dev
,
1258 sis_priv
->cur_phy
, MII_RESV
)) >> 3;
1260 max_value
=min_value
=eq_value
;
1261 max_value
= (eq_value
> max_value
) ?
1262 eq_value
: max_value
;
1263 min_value
= (eq_value
< min_value
) ?
1264 eq_value
: min_value
;
1266 /* 630E rule to determine the equalizer value */
1267 if (revision
== SIS630E_900_REV
|| revision
== SIS630EA1_900_REV
||
1268 revision
== SIS630ET_900_REV
) {
1270 eq_value
= max_value
;
1271 else if (max_value
>= 5 && max_value
< 15)
1272 eq_value
= (max_value
== min_value
) ?
1273 max_value
+2 : max_value
+1;
1274 else if (max_value
>= 15)
1275 eq_value
=(max_value
== min_value
) ?
1276 max_value
+6 : max_value
+5;
1278 /* 630B0&B1 rule to determine the equalizer value */
1279 if (revision
== SIS630A_900_REV
&&
1280 (sis_priv
->host_bridge_rev
== SIS630B0
||
1281 sis_priv
->host_bridge_rev
== SIS630B1
)) {
1285 eq_value
= (max_value
+ min_value
+ 1)/2;
1287 /* write equalizer value and setting */
1288 reg14h
= mdio_read(net_dev
, sis_priv
->cur_phy
, MII_RESV
);
1289 reg14h
= (reg14h
& 0xFF07) | ((eq_value
<< 3) & 0x00F8);
1290 reg14h
= (reg14h
| 0x6000) & 0xFDFF;
1291 mdio_write(net_dev
, sis_priv
->cur_phy
, MII_RESV
, reg14h
);
1293 reg14h
= mdio_read(net_dev
, sis_priv
->cur_phy
, MII_RESV
);
1294 if (revision
== SIS630A_900_REV
&&
1295 (sis_priv
->host_bridge_rev
== SIS630B0
||
1296 sis_priv
->host_bridge_rev
== SIS630B1
))
1297 mdio_write(net_dev
, sis_priv
->cur_phy
, MII_RESV
,
1298 (reg14h
| 0x2200) & 0xBFFF);
1300 mdio_write(net_dev
, sis_priv
->cur_phy
, MII_RESV
,
1301 (reg14h
| 0x2000) & 0xBFFF);
1306 * sis900_timer - sis900 timer routine
1307 * @data: pointer to sis900 net device
1309 * On each timer ticks we check two things,
1310 * link status (ON/OFF) and link mode (10/100/Full/Half)
1313 static void sis900_timer(unsigned long data
)
1315 struct net_device
*net_dev
= (struct net_device
*)data
;
1316 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1317 struct mii_phy
*mii_phy
= sis_priv
->mii
;
1318 static const int next_tick
= 5*HZ
;
1321 if (!sis_priv
->autong_complete
){
1322 int uninitialized_var(speed
), duplex
= 0;
1324 sis900_read_mode(net_dev
, &speed
, &duplex
);
1326 sis900_set_mode(sis_priv
, speed
, duplex
);
1327 sis630_set_eq(net_dev
, sis_priv
->chipset_rev
);
1328 netif_start_queue(net_dev
);
1331 sis_priv
->timer
.expires
= jiffies
+ HZ
;
1332 add_timer(&sis_priv
->timer
);
1336 status
= mdio_read(net_dev
, sis_priv
->cur_phy
, MII_STATUS
);
1337 status
= mdio_read(net_dev
, sis_priv
->cur_phy
, MII_STATUS
);
1339 /* Link OFF -> ON */
1340 if (!netif_carrier_ok(net_dev
)) {
1342 /* Search for new PHY */
1343 status
= sis900_default_phy(net_dev
);
1344 mii_phy
= sis_priv
->mii
;
1346 if (status
& MII_STAT_LINK
){
1347 sis900_check_mode(net_dev
, mii_phy
);
1348 netif_carrier_on(net_dev
);
1351 /* Link ON -> OFF */
1352 if (!(status
& MII_STAT_LINK
)){
1353 netif_carrier_off(net_dev
);
1354 if(netif_msg_link(sis_priv
))
1355 printk(KERN_INFO
"%s: Media Link Off\n", net_dev
->name
);
1357 /* Change mode issue */
1358 if ((mii_phy
->phy_id0
== 0x001D) &&
1359 ((mii_phy
->phy_id1
& 0xFFF0) == 0x8000))
1360 sis900_reset_phy(net_dev
, sis_priv
->cur_phy
);
1362 sis630_set_eq(net_dev
, sis_priv
->chipset_rev
);
1368 sis_priv
->timer
.expires
= jiffies
+ next_tick
;
1369 add_timer(&sis_priv
->timer
);
1373 * sis900_check_mode - check the media mode for sis900
1374 * @net_dev: the net device to be checked
1375 * @mii_phy: the mii phy
1377 * Older driver gets the media mode from mii status output
1378 * register. Now we set our media capability and auto-negotiate
1379 * to get the upper bound of speed and duplex between two ends.
1380 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1381 * and autong_complete should be set to 1.
1384 static void sis900_check_mode(struct net_device
*net_dev
, struct mii_phy
*mii_phy
)
1386 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1387 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
1390 if (mii_phy
->phy_types
== LAN
) {
1391 sw32(cfg
, ~EXD
& sr32(cfg
));
1392 sis900_set_capability(net_dev
, mii_phy
);
1393 sis900_auto_negotiate(net_dev
, sis_priv
->cur_phy
);
1395 sw32(cfg
, EXD
| sr32(cfg
));
1396 speed
= HW_SPEED_HOME
;
1397 duplex
= FDX_CAPABLE_HALF_SELECTED
;
1398 sis900_set_mode(sis_priv
, speed
, duplex
);
1399 sis_priv
->autong_complete
= 1;
1404 * sis900_set_mode - Set the media mode of mac register.
1405 * @sp: the device private data
1406 * @speed : the transmit speed to be determined
1407 * @duplex: the duplex mode to be determined
1409 * Set the media mode of mac register txcfg/rxcfg according to
1410 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1411 * bus is used instead of PCI bus. When this bit is set 1, the
1412 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1416 static void sis900_set_mode(struct sis900_private
*sp
, int speed
, int duplex
)
1418 void __iomem
*ioaddr
= sp
->ioaddr
;
1419 u32 tx_flags
= 0, rx_flags
= 0;
1421 if (sr32( cfg
) & EDB_MASTER_EN
) {
1422 tx_flags
= TxATP
| (DMA_BURST_64
<< TxMXDMA_shift
) |
1423 (TX_FILL_THRESH
<< TxFILLT_shift
);
1424 rx_flags
= DMA_BURST_64
<< RxMXDMA_shift
;
1426 tx_flags
= TxATP
| (DMA_BURST_512
<< TxMXDMA_shift
) |
1427 (TX_FILL_THRESH
<< TxFILLT_shift
);
1428 rx_flags
= DMA_BURST_512
<< RxMXDMA_shift
;
1431 if (speed
== HW_SPEED_HOME
|| speed
== HW_SPEED_10_MBPS
) {
1432 rx_flags
|= (RxDRNT_10
<< RxDRNT_shift
);
1433 tx_flags
|= (TxDRNT_10
<< TxDRNT_shift
);
1435 rx_flags
|= (RxDRNT_100
<< RxDRNT_shift
);
1436 tx_flags
|= (TxDRNT_100
<< TxDRNT_shift
);
1439 if (duplex
== FDX_CAPABLE_FULL_SELECTED
) {
1440 tx_flags
|= (TxCSI
| TxHBI
);
1444 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1445 /* Can accept Jumbo packet */
1449 sw32(txcfg
, tx_flags
);
1450 sw32(rxcfg
, rx_flags
);
1454 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1455 * @net_dev: the net device to read mode for
1456 * @phy_addr: mii phy address
1458 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1459 * autong_complete should be set to 0 when starting auto-negotiation.
1460 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1461 * sis900_timer will wait for link on again if autong_complete = 0.
1464 static void sis900_auto_negotiate(struct net_device
*net_dev
, int phy_addr
)
1466 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1470 for (i
= 0; i
< 2; i
++)
1471 status
= mdio_read(net_dev
, phy_addr
, MII_STATUS
);
1473 if (!(status
& MII_STAT_LINK
)){
1474 if(netif_msg_link(sis_priv
))
1475 printk(KERN_INFO
"%s: Media Link Off\n", net_dev
->name
);
1476 sis_priv
->autong_complete
= 1;
1477 netif_carrier_off(net_dev
);
1481 /* (Re)start AutoNegotiate */
1482 mdio_write(net_dev
, phy_addr
, MII_CONTROL
,
1483 MII_CNTL_AUTO
| MII_CNTL_RST_AUTO
);
1484 sis_priv
->autong_complete
= 0;
1489 * sis900_read_mode - read media mode for sis900 internal phy
1490 * @net_dev: the net device to read mode for
1491 * @speed : the transmit speed to be determined
1492 * @duplex : the duplex mode to be determined
1494 * The capability of remote end will be put in mii register autorec
1495 * after auto-negotiation. Use AND operation to get the upper bound
1496 * of speed and duplex between two ends.
1499 static void sis900_read_mode(struct net_device
*net_dev
, int *speed
, int *duplex
)
1501 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1502 struct mii_phy
*phy
= sis_priv
->mii
;
1503 int phy_addr
= sis_priv
->cur_phy
;
1505 u16 autoadv
, autorec
;
1508 for (i
= 0; i
< 2; i
++)
1509 status
= mdio_read(net_dev
, phy_addr
, MII_STATUS
);
1511 if (!(status
& MII_STAT_LINK
))
1514 /* AutoNegotiate completed */
1515 autoadv
= mdio_read(net_dev
, phy_addr
, MII_ANADV
);
1516 autorec
= mdio_read(net_dev
, phy_addr
, MII_ANLPAR
);
1517 status
= autoadv
& autorec
;
1519 *speed
= HW_SPEED_10_MBPS
;
1520 *duplex
= FDX_CAPABLE_HALF_SELECTED
;
1522 if (status
& (MII_NWAY_TX
| MII_NWAY_TX_FDX
))
1523 *speed
= HW_SPEED_100_MBPS
;
1524 if (status
& ( MII_NWAY_TX_FDX
| MII_NWAY_T_FDX
))
1525 *duplex
= FDX_CAPABLE_FULL_SELECTED
;
1527 sis_priv
->autong_complete
= 1;
1529 /* Workaround for Realtek RTL8201 PHY issue */
1530 if ((phy
->phy_id0
== 0x0000) && ((phy
->phy_id1
& 0xFFF0) == 0x8200)) {
1531 if (mdio_read(net_dev
, phy_addr
, MII_CONTROL
) & MII_CNTL_FDX
)
1532 *duplex
= FDX_CAPABLE_FULL_SELECTED
;
1533 if (mdio_read(net_dev
, phy_addr
, 0x0019) & 0x01)
1534 *speed
= HW_SPEED_100_MBPS
;
1537 if(netif_msg_link(sis_priv
))
1538 printk(KERN_INFO
"%s: Media Link On %s %s-duplex\n",
1540 *speed
== HW_SPEED_100_MBPS
?
1541 "100mbps" : "10mbps",
1542 *duplex
== FDX_CAPABLE_FULL_SELECTED
?
1547 * sis900_tx_timeout - sis900 transmit timeout routine
1548 * @net_dev: the net device to transmit
1550 * print transmit timeout status
1551 * disable interrupts and do some tasks
1554 static void sis900_tx_timeout(struct net_device
*net_dev
)
1556 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1557 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
1558 unsigned long flags
;
1561 if (netif_msg_tx_err(sis_priv
)) {
1562 printk(KERN_INFO
"%s: Transmit timeout, status %8.8x %8.8x\n",
1563 net_dev
->name
, sr32(cr
), sr32(isr
));
1566 /* Disable interrupts by clearing the interrupt mask. */
1569 /* use spinlock to prevent interrupt handler accessing buffer ring */
1570 spin_lock_irqsave(&sis_priv
->lock
, flags
);
1572 /* discard unsent packets */
1573 sis_priv
->dirty_tx
= sis_priv
->cur_tx
= 0;
1574 for (i
= 0; i
< NUM_TX_DESC
; i
++) {
1575 struct sk_buff
*skb
= sis_priv
->tx_skbuff
[i
];
1578 pci_unmap_single(sis_priv
->pci_dev
,
1579 sis_priv
->tx_ring
[i
].bufptr
, skb
->len
,
1581 dev_kfree_skb_irq(skb
);
1582 sis_priv
->tx_skbuff
[i
] = NULL
;
1583 sis_priv
->tx_ring
[i
].cmdsts
= 0;
1584 sis_priv
->tx_ring
[i
].bufptr
= 0;
1585 net_dev
->stats
.tx_dropped
++;
1588 sis_priv
->tx_full
= 0;
1589 netif_wake_queue(net_dev
);
1591 spin_unlock_irqrestore(&sis_priv
->lock
, flags
);
1593 net_dev
->trans_start
= jiffies
; /* prevent tx timeout */
1595 /* load Transmit Descriptor Register */
1596 sw32(txdp
, sis_priv
->tx_ring_dma
);
1598 /* Enable all known interrupts by setting the interrupt mask. */
1599 sw32(imr
, RxSOVR
| RxORN
| RxERR
| RxOK
| TxURN
| TxERR
| TxIDLE
);
1603 * sis900_start_xmit - sis900 start transmit routine
1604 * @skb: socket buffer pointer to put the data being transmitted
1605 * @net_dev: the net device to transmit with
1607 * Set the transmit buffer descriptor,
1608 * and write TxENA to enable transmit state machine.
1609 * tell upper layer if the buffer is full
1613 sis900_start_xmit(struct sk_buff
*skb
, struct net_device
*net_dev
)
1615 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1616 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
1618 unsigned long flags
;
1619 unsigned int index_cur_tx
, index_dirty_tx
;
1620 unsigned int count_dirty_tx
;
1622 /* Don't transmit data before the complete of auto-negotiation */
1623 if(!sis_priv
->autong_complete
){
1624 netif_stop_queue(net_dev
);
1625 return NETDEV_TX_BUSY
;
1628 spin_lock_irqsave(&sis_priv
->lock
, flags
);
1630 /* Calculate the next Tx descriptor entry. */
1631 entry
= sis_priv
->cur_tx
% NUM_TX_DESC
;
1632 sis_priv
->tx_skbuff
[entry
] = skb
;
1634 /* set the transmit buffer descriptor and enable Transmit State Machine */
1635 sis_priv
->tx_ring
[entry
].bufptr
= pci_map_single(sis_priv
->pci_dev
,
1636 skb
->data
, skb
->len
, PCI_DMA_TODEVICE
);
1637 sis_priv
->tx_ring
[entry
].cmdsts
= (OWN
| skb
->len
);
1638 sw32(cr
, TxENA
| sr32(cr
));
1640 sis_priv
->cur_tx
++;
1641 index_cur_tx
= sis_priv
->cur_tx
;
1642 index_dirty_tx
= sis_priv
->dirty_tx
;
1644 for (count_dirty_tx
= 0; index_cur_tx
!= index_dirty_tx
; index_dirty_tx
++)
1647 if (index_cur_tx
== index_dirty_tx
) {
1648 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1649 sis_priv
->tx_full
= 1;
1650 netif_stop_queue(net_dev
);
1651 } else if (count_dirty_tx
< NUM_TX_DESC
) {
1652 /* Typical path, tell upper layer that more transmission is possible */
1653 netif_start_queue(net_dev
);
1655 /* buffer full, tell upper layer no more transmission */
1656 sis_priv
->tx_full
= 1;
1657 netif_stop_queue(net_dev
);
1660 spin_unlock_irqrestore(&sis_priv
->lock
, flags
);
1662 if (netif_msg_tx_queued(sis_priv
))
1663 printk(KERN_DEBUG
"%s: Queued Tx packet at %p size %d "
1665 net_dev
->name
, skb
->data
, (int)skb
->len
, entry
);
1667 return NETDEV_TX_OK
;
1671 * sis900_interrupt - sis900 interrupt handler
1672 * @irq: the irq number
1673 * @dev_instance: the client data object
1675 * The interrupt handler does all of the Rx thread work,
1676 * and cleans up after the Tx thread
1679 static irqreturn_t
sis900_interrupt(int irq
, void *dev_instance
)
1681 struct net_device
*net_dev
= dev_instance
;
1682 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1683 int boguscnt
= max_interrupt_work
;
1684 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
1686 unsigned int handled
= 0;
1688 spin_lock (&sis_priv
->lock
);
1693 if ((status
& (HIBERR
|TxURN
|TxERR
|TxIDLE
|RxORN
|RxERR
|RxOK
)) == 0)
1694 /* nothing intresting happened */
1698 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1699 if (status
& (RxORN
| RxERR
| RxOK
))
1703 if (status
& (TxURN
| TxERR
| TxIDLE
))
1705 sis900_finish_xmit(net_dev
);
1707 /* something strange happened !!! */
1708 if (status
& HIBERR
) {
1709 if(netif_msg_intr(sis_priv
))
1710 printk(KERN_INFO
"%s: Abnormal interrupt, "
1711 "status %#8.8x.\n", net_dev
->name
, status
);
1714 if (--boguscnt
< 0) {
1715 if(netif_msg_intr(sis_priv
))
1716 printk(KERN_INFO
"%s: Too much work at interrupt, "
1717 "interrupt status = %#8.8x.\n",
1718 net_dev
->name
, status
);
1723 if(netif_msg_intr(sis_priv
))
1724 printk(KERN_DEBUG
"%s: exiting interrupt, "
1725 "interrupt status = 0x%#8.8x.\n",
1726 net_dev
->name
, sr32(isr
));
1728 spin_unlock (&sis_priv
->lock
);
1729 return IRQ_RETVAL(handled
);
1733 * sis900_rx - sis900 receive routine
1734 * @net_dev: the net device which receives data
1736 * Process receive interrupt events,
1737 * put buffer to higher layer and refill buffer pool
1738 * Note: This function is called by interrupt handler,
1739 * don't do "too much" work here
1742 static int sis900_rx(struct net_device
*net_dev
)
1744 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1745 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
1746 unsigned int entry
= sis_priv
->cur_rx
% NUM_RX_DESC
;
1747 u32 rx_status
= sis_priv
->rx_ring
[entry
].cmdsts
;
1750 if (netif_msg_rx_status(sis_priv
))
1751 printk(KERN_DEBUG
"sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1753 sis_priv
->cur_rx
, sis_priv
->dirty_rx
, rx_status
);
1754 rx_work_limit
= sis_priv
->dirty_rx
+ NUM_RX_DESC
- sis_priv
->cur_rx
;
1756 while (rx_status
& OWN
) {
1757 unsigned int rx_size
;
1758 unsigned int data_size
;
1760 if (--rx_work_limit
< 0)
1763 data_size
= rx_status
& DSIZE
;
1764 rx_size
= data_size
- CRC_SIZE
;
1766 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1767 /* ``TOOLONG'' flag means jumbo packet received. */
1768 if ((rx_status
& TOOLONG
) && data_size
<= MAX_FRAME_SIZE
)
1769 rx_status
&= (~ ((unsigned int)TOOLONG
));
1772 if (rx_status
& (ABORT
|OVERRUN
|TOOLONG
|RUNT
|RXISERR
|CRCERR
|FAERR
)) {
1773 /* corrupted packet received */
1774 if (netif_msg_rx_err(sis_priv
))
1775 printk(KERN_DEBUG
"%s: Corrupted packet "
1776 "received, buffer status = 0x%8.8x/%d.\n",
1777 net_dev
->name
, rx_status
, data_size
);
1778 net_dev
->stats
.rx_errors
++;
1779 if (rx_status
& OVERRUN
)
1780 net_dev
->stats
.rx_over_errors
++;
1781 if (rx_status
& (TOOLONG
|RUNT
))
1782 net_dev
->stats
.rx_length_errors
++;
1783 if (rx_status
& (RXISERR
| FAERR
))
1784 net_dev
->stats
.rx_frame_errors
++;
1785 if (rx_status
& CRCERR
)
1786 net_dev
->stats
.rx_crc_errors
++;
1787 /* reset buffer descriptor state */
1788 sis_priv
->rx_ring
[entry
].cmdsts
= RX_BUF_SIZE
;
1790 struct sk_buff
* skb
;
1791 struct sk_buff
* rx_skb
;
1793 pci_unmap_single(sis_priv
->pci_dev
,
1794 sis_priv
->rx_ring
[entry
].bufptr
, RX_BUF_SIZE
,
1795 PCI_DMA_FROMDEVICE
);
1797 /* refill the Rx buffer, what if there is not enough
1798 * memory for new socket buffer ?? */
1799 if ((skb
= netdev_alloc_skb(net_dev
, RX_BUF_SIZE
)) == NULL
) {
1801 * Not enough memory to refill the buffer
1802 * so we need to recycle the old one so
1803 * as to avoid creating a memory hole
1806 skb
= sis_priv
->rx_skbuff
[entry
];
1807 net_dev
->stats
.rx_dropped
++;
1808 goto refill_rx_ring
;
1811 /* This situation should never happen, but due to
1812 some unknown bugs, it is possible that
1813 we are working on NULL sk_buff :-( */
1814 if (sis_priv
->rx_skbuff
[entry
] == NULL
) {
1815 if (netif_msg_rx_err(sis_priv
))
1816 printk(KERN_WARNING
"%s: NULL pointer "
1817 "encountered in Rx ring\n"
1818 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1819 net_dev
->name
, sis_priv
->cur_rx
,
1820 sis_priv
->dirty_rx
);
1825 /* give the socket buffer to upper layers */
1826 rx_skb
= sis_priv
->rx_skbuff
[entry
];
1827 skb_put(rx_skb
, rx_size
);
1828 rx_skb
->protocol
= eth_type_trans(rx_skb
, net_dev
);
1831 /* some network statistics */
1832 if ((rx_status
& BCAST
) == MCAST
)
1833 net_dev
->stats
.multicast
++;
1834 net_dev
->stats
.rx_bytes
+= rx_size
;
1835 net_dev
->stats
.rx_packets
++;
1836 sis_priv
->dirty_rx
++;
1838 sis_priv
->rx_skbuff
[entry
] = skb
;
1839 sis_priv
->rx_ring
[entry
].cmdsts
= RX_BUF_SIZE
;
1840 sis_priv
->rx_ring
[entry
].bufptr
=
1841 pci_map_single(sis_priv
->pci_dev
, skb
->data
,
1842 RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
1845 entry
= sis_priv
->cur_rx
% NUM_RX_DESC
;
1846 rx_status
= sis_priv
->rx_ring
[entry
].cmdsts
;
1849 /* refill the Rx buffer, what if the rate of refilling is slower
1850 * than consuming ?? */
1851 for (; sis_priv
->cur_rx
!= sis_priv
->dirty_rx
; sis_priv
->dirty_rx
++) {
1852 struct sk_buff
*skb
;
1854 entry
= sis_priv
->dirty_rx
% NUM_RX_DESC
;
1856 if (sis_priv
->rx_skbuff
[entry
] == NULL
) {
1857 if ((skb
= netdev_alloc_skb(net_dev
, RX_BUF_SIZE
)) == NULL
) {
1858 /* not enough memory for skbuff, this makes a
1859 * "hole" on the buffer ring, it is not clear
1860 * how the hardware will react to this kind
1861 * of degenerated buffer */
1862 if (netif_msg_rx_err(sis_priv
))
1863 printk(KERN_INFO
"%s: Memory squeeze, "
1864 "deferring packet.\n",
1866 net_dev
->stats
.rx_dropped
++;
1869 sis_priv
->rx_skbuff
[entry
] = skb
;
1870 sis_priv
->rx_ring
[entry
].cmdsts
= RX_BUF_SIZE
;
1871 sis_priv
->rx_ring
[entry
].bufptr
=
1872 pci_map_single(sis_priv
->pci_dev
, skb
->data
,
1873 RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
1876 /* re-enable the potentially idle receive state matchine */
1877 sw32(cr
, RxENA
| sr32(cr
));
1883 * sis900_finish_xmit - finish up transmission of packets
1884 * @net_dev: the net device to be transmitted on
1886 * Check for error condition and free socket buffer etc
1887 * schedule for more transmission as needed
1888 * Note: This function is called by interrupt handler,
1889 * don't do "too much" work here
1892 static void sis900_finish_xmit (struct net_device
*net_dev
)
1894 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1896 for (; sis_priv
->dirty_tx
!= sis_priv
->cur_tx
; sis_priv
->dirty_tx
++) {
1897 struct sk_buff
*skb
;
1901 entry
= sis_priv
->dirty_tx
% NUM_TX_DESC
;
1902 tx_status
= sis_priv
->tx_ring
[entry
].cmdsts
;
1904 if (tx_status
& OWN
) {
1905 /* The packet is not transmitted yet (owned by hardware) !
1906 * Note: the interrupt is generated only when Tx Machine
1907 * is idle, so this is an almost impossible case */
1911 if (tx_status
& (ABORT
| UNDERRUN
| OWCOLL
)) {
1912 /* packet unsuccessfully transmitted */
1913 if (netif_msg_tx_err(sis_priv
))
1914 printk(KERN_DEBUG
"%s: Transmit "
1915 "error, Tx status %8.8x.\n",
1916 net_dev
->name
, tx_status
);
1917 net_dev
->stats
.tx_errors
++;
1918 if (tx_status
& UNDERRUN
)
1919 net_dev
->stats
.tx_fifo_errors
++;
1920 if (tx_status
& ABORT
)
1921 net_dev
->stats
.tx_aborted_errors
++;
1922 if (tx_status
& NOCARRIER
)
1923 net_dev
->stats
.tx_carrier_errors
++;
1924 if (tx_status
& OWCOLL
)
1925 net_dev
->stats
.tx_window_errors
++;
1927 /* packet successfully transmitted */
1928 net_dev
->stats
.collisions
+= (tx_status
& COLCNT
) >> 16;
1929 net_dev
->stats
.tx_bytes
+= tx_status
& DSIZE
;
1930 net_dev
->stats
.tx_packets
++;
1932 /* Free the original skb. */
1933 skb
= sis_priv
->tx_skbuff
[entry
];
1934 pci_unmap_single(sis_priv
->pci_dev
,
1935 sis_priv
->tx_ring
[entry
].bufptr
, skb
->len
,
1937 dev_kfree_skb_irq(skb
);
1938 sis_priv
->tx_skbuff
[entry
] = NULL
;
1939 sis_priv
->tx_ring
[entry
].bufptr
= 0;
1940 sis_priv
->tx_ring
[entry
].cmdsts
= 0;
1943 if (sis_priv
->tx_full
&& netif_queue_stopped(net_dev
) &&
1944 sis_priv
->cur_tx
- sis_priv
->dirty_tx
< NUM_TX_DESC
- 4) {
1945 /* The ring is no longer full, clear tx_full and schedule
1946 * more transmission by netif_wake_queue(net_dev) */
1947 sis_priv
->tx_full
= 0;
1948 netif_wake_queue (net_dev
);
1953 * sis900_close - close sis900 device
1954 * @net_dev: the net device to be closed
1956 * Disable interrupts, stop the Tx and Rx Status Machine
1957 * free Tx and RX socket buffer
1960 static int sis900_close(struct net_device
*net_dev
)
1962 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
1963 struct pci_dev
*pdev
= sis_priv
->pci_dev
;
1964 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
1965 struct sk_buff
*skb
;
1968 netif_stop_queue(net_dev
);
1970 /* Disable interrupts by clearing the interrupt mask. */
1974 /* Stop the chip's Tx and Rx Status Machine */
1975 sw32(cr
, RxDIS
| TxDIS
| sr32(cr
));
1977 del_timer(&sis_priv
->timer
);
1979 free_irq(pdev
->irq
, net_dev
);
1981 /* Free Tx and RX skbuff */
1982 for (i
= 0; i
< NUM_RX_DESC
; i
++) {
1983 skb
= sis_priv
->rx_skbuff
[i
];
1985 pci_unmap_single(pdev
, sis_priv
->rx_ring
[i
].bufptr
,
1986 RX_BUF_SIZE
, PCI_DMA_FROMDEVICE
);
1988 sis_priv
->rx_skbuff
[i
] = NULL
;
1991 for (i
= 0; i
< NUM_TX_DESC
; i
++) {
1992 skb
= sis_priv
->tx_skbuff
[i
];
1994 pci_unmap_single(pdev
, sis_priv
->tx_ring
[i
].bufptr
,
1995 skb
->len
, PCI_DMA_TODEVICE
);
1997 sis_priv
->tx_skbuff
[i
] = NULL
;
2001 /* Green! Put the chip in low-power mode. */
2007 * sis900_get_drvinfo - Return information about driver
2008 * @net_dev: the net device to probe
2009 * @info: container for info returned
2011 * Process ethtool command such as "ehtool -i" to show information
2014 static void sis900_get_drvinfo(struct net_device
*net_dev
,
2015 struct ethtool_drvinfo
*info
)
2017 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2019 strlcpy(info
->driver
, SIS900_MODULE_NAME
, sizeof(info
->driver
));
2020 strlcpy(info
->version
, SIS900_DRV_VERSION
, sizeof(info
->version
));
2021 strlcpy(info
->bus_info
, pci_name(sis_priv
->pci_dev
),
2022 sizeof(info
->bus_info
));
2025 static u32
sis900_get_msglevel(struct net_device
*net_dev
)
2027 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2028 return sis_priv
->msg_enable
;
2031 static void sis900_set_msglevel(struct net_device
*net_dev
, u32 value
)
2033 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2034 sis_priv
->msg_enable
= value
;
2037 static u32
sis900_get_link(struct net_device
*net_dev
)
2039 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2040 return mii_link_ok(&sis_priv
->mii_info
);
2043 static int sis900_get_settings(struct net_device
*net_dev
,
2044 struct ethtool_cmd
*cmd
)
2046 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2047 spin_lock_irq(&sis_priv
->lock
);
2048 mii_ethtool_gset(&sis_priv
->mii_info
, cmd
);
2049 spin_unlock_irq(&sis_priv
->lock
);
2053 static int sis900_set_settings(struct net_device
*net_dev
,
2054 struct ethtool_cmd
*cmd
)
2056 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2058 spin_lock_irq(&sis_priv
->lock
);
2059 rt
= mii_ethtool_sset(&sis_priv
->mii_info
, cmd
);
2060 spin_unlock_irq(&sis_priv
->lock
);
2064 static int sis900_nway_reset(struct net_device
*net_dev
)
2066 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2067 return mii_nway_restart(&sis_priv
->mii_info
);
2071 * sis900_set_wol - Set up Wake on Lan registers
2072 * @net_dev: the net device to probe
2073 * @wol: container for info passed to the driver
2075 * Process ethtool command "wol" to setup wake on lan features.
2076 * SiS900 supports sending WoL events if a correct packet is received,
2077 * but there is no simple way to filter them to only a subset (broadcast,
2078 * multicast, unicast or arp).
2081 static int sis900_set_wol(struct net_device
*net_dev
, struct ethtool_wolinfo
*wol
)
2083 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2084 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
2085 u32 cfgpmcsr
= 0, pmctrl_bits
= 0;
2087 if (wol
->wolopts
== 0) {
2088 pci_read_config_dword(sis_priv
->pci_dev
, CFGPMCSR
, &cfgpmcsr
);
2089 cfgpmcsr
&= ~PME_EN
;
2090 pci_write_config_dword(sis_priv
->pci_dev
, CFGPMCSR
, cfgpmcsr
);
2091 sw32(pmctrl
, pmctrl_bits
);
2092 if (netif_msg_wol(sis_priv
))
2093 printk(KERN_DEBUG
"%s: Wake on LAN disabled\n", net_dev
->name
);
2097 if (wol
->wolopts
& (WAKE_MAGICSECURE
| WAKE_UCAST
| WAKE_MCAST
2098 | WAKE_BCAST
| WAKE_ARP
))
2101 if (wol
->wolopts
& WAKE_MAGIC
)
2102 pmctrl_bits
|= MAGICPKT
;
2103 if (wol
->wolopts
& WAKE_PHY
)
2104 pmctrl_bits
|= LINKON
;
2106 sw32(pmctrl
, pmctrl_bits
);
2108 pci_read_config_dword(sis_priv
->pci_dev
, CFGPMCSR
, &cfgpmcsr
);
2110 pci_write_config_dword(sis_priv
->pci_dev
, CFGPMCSR
, cfgpmcsr
);
2111 if (netif_msg_wol(sis_priv
))
2112 printk(KERN_DEBUG
"%s: Wake on LAN enabled\n", net_dev
->name
);
2117 static void sis900_get_wol(struct net_device
*net_dev
, struct ethtool_wolinfo
*wol
)
2119 struct sis900_private
*sp
= netdev_priv(net_dev
);
2120 void __iomem
*ioaddr
= sp
->ioaddr
;
2123 pmctrl_bits
= sr32(pmctrl
);
2124 if (pmctrl_bits
& MAGICPKT
)
2125 wol
->wolopts
|= WAKE_MAGIC
;
2126 if (pmctrl_bits
& LINKON
)
2127 wol
->wolopts
|= WAKE_PHY
;
2129 wol
->supported
= (WAKE_PHY
| WAKE_MAGIC
);
2132 static const struct ethtool_ops sis900_ethtool_ops
= {
2133 .get_drvinfo
= sis900_get_drvinfo
,
2134 .get_msglevel
= sis900_get_msglevel
,
2135 .set_msglevel
= sis900_set_msglevel
,
2136 .get_link
= sis900_get_link
,
2137 .get_settings
= sis900_get_settings
,
2138 .set_settings
= sis900_set_settings
,
2139 .nway_reset
= sis900_nway_reset
,
2140 .get_wol
= sis900_get_wol
,
2141 .set_wol
= sis900_set_wol
2145 * mii_ioctl - process MII i/o control command
2146 * @net_dev: the net device to command for
2147 * @rq: parameter for command
2148 * @cmd: the i/o command
2150 * Process MII command like read/write MII register
2153 static int mii_ioctl(struct net_device
*net_dev
, struct ifreq
*rq
, int cmd
)
2155 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2156 struct mii_ioctl_data
*data
= if_mii(rq
);
2159 case SIOCGMIIPHY
: /* Get address of MII PHY in use. */
2160 data
->phy_id
= sis_priv
->mii
->phy_addr
;
2163 case SIOCGMIIREG
: /* Read MII PHY register. */
2164 data
->val_out
= mdio_read(net_dev
, data
->phy_id
& 0x1f, data
->reg_num
& 0x1f);
2167 case SIOCSMIIREG
: /* Write MII PHY register. */
2168 mdio_write(net_dev
, data
->phy_id
& 0x1f, data
->reg_num
& 0x1f, data
->val_in
);
2176 * sis900_set_config - Set media type by net_device.set_config
2177 * @dev: the net device for media type change
2178 * @map: ifmap passed by ifconfig
2180 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2181 * we support only port changes. All other runtime configuration
2182 * changes will be ignored
2185 static int sis900_set_config(struct net_device
*dev
, struct ifmap
*map
)
2187 struct sis900_private
*sis_priv
= netdev_priv(dev
);
2188 struct mii_phy
*mii_phy
= sis_priv
->mii
;
2192 if ((map
->port
!= (u_char
)(-1)) && (map
->port
!= dev
->if_port
)) {
2193 /* we switch on the ifmap->port field. I couldn't find anything
2194 * like a definition or standard for the values of that field.
2195 * I think the meaning of those values is device specific. But
2196 * since I would like to change the media type via the ifconfig
2197 * command I use the definition from linux/netdevice.h
2198 * (which seems to be different from the ifport(pcmcia) definition) */
2200 case IF_PORT_UNKNOWN
: /* use auto here */
2201 dev
->if_port
= map
->port
;
2202 /* we are going to change the media type, so the Link
2203 * will be temporary down and we need to reflect that
2204 * here. When the Link comes up again, it will be
2205 * sensed by the sis_timer procedure, which also does
2206 * all the rest for us */
2207 netif_carrier_off(dev
);
2209 /* read current state */
2210 status
= mdio_read(dev
, mii_phy
->phy_addr
, MII_CONTROL
);
2212 /* enable auto negotiation and reset the negotioation
2213 * (I don't really know what the auto negatiotiation
2214 * reset really means, but it sounds for me right to
2216 mdio_write(dev
, mii_phy
->phy_addr
,
2217 MII_CONTROL
, status
| MII_CNTL_AUTO
| MII_CNTL_RST_AUTO
);
2221 case IF_PORT_10BASET
: /* 10BaseT */
2222 dev
->if_port
= map
->port
;
2224 /* we are going to change the media type, so the Link
2225 * will be temporary down and we need to reflect that
2226 * here. When the Link comes up again, it will be
2227 * sensed by the sis_timer procedure, which also does
2228 * all the rest for us */
2229 netif_carrier_off(dev
);
2231 /* set Speed to 10Mbps */
2232 /* read current state */
2233 status
= mdio_read(dev
, mii_phy
->phy_addr
, MII_CONTROL
);
2235 /* disable auto negotiation and force 10MBit mode*/
2236 mdio_write(dev
, mii_phy
->phy_addr
,
2237 MII_CONTROL
, status
& ~(MII_CNTL_SPEED
|
2241 case IF_PORT_100BASET
: /* 100BaseT */
2242 case IF_PORT_100BASETX
: /* 100BaseTx */
2243 dev
->if_port
= map
->port
;
2245 /* we are going to change the media type, so the Link
2246 * will be temporary down and we need to reflect that
2247 * here. When the Link comes up again, it will be
2248 * sensed by the sis_timer procedure, which also does
2249 * all the rest for us */
2250 netif_carrier_off(dev
);
2252 /* set Speed to 100Mbps */
2253 /* disable auto negotiation and enable 100MBit Mode */
2254 status
= mdio_read(dev
, mii_phy
->phy_addr
, MII_CONTROL
);
2255 mdio_write(dev
, mii_phy
->phy_addr
,
2256 MII_CONTROL
, (status
& ~MII_CNTL_SPEED
) |
2261 case IF_PORT_10BASE2
: /* 10Base2 */
2262 case IF_PORT_AUI
: /* AUI */
2263 case IF_PORT_100BASEFX
: /* 100BaseFx */
2264 /* These Modes are not supported (are they?)*/
2276 * sis900_mcast_bitnr - compute hashtable index
2277 * @addr: multicast address
2278 * @revision: revision id of chip
2280 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2281 * hash table, which makes this function a little bit different from other drivers
2282 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2283 * multicast hash table.
2286 static inline u16
sis900_mcast_bitnr(u8
*addr
, u8 revision
)
2289 u32 crc
= ether_crc(6, addr
);
2291 /* leave 8 or 7 most siginifant bits */
2292 if ((revision
>= SIS635A_900_REV
) || (revision
== SIS900B_900_REV
))
2293 return (int)(crc
>> 24);
2295 return (int)(crc
>> 25);
2299 * set_rx_mode - Set SiS900 receive mode
2300 * @net_dev: the net device to be set
2302 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2303 * And set the appropriate multicast filter.
2304 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2307 static void set_rx_mode(struct net_device
*net_dev
)
2309 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2310 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
2311 u16 mc_filter
[16] = {0}; /* 256/128 bits multicast hash table */
2312 int i
, table_entries
;
2315 /* 635 Hash Table entries = 256(2^16) */
2316 if((sis_priv
->chipset_rev
>= SIS635A_900_REV
) ||
2317 (sis_priv
->chipset_rev
== SIS900B_900_REV
))
2322 if (net_dev
->flags
& IFF_PROMISC
) {
2323 /* Accept any kinds of packets */
2324 rx_mode
= RFPromiscuous
;
2325 for (i
= 0; i
< table_entries
; i
++)
2326 mc_filter
[i
] = 0xffff;
2327 } else if ((netdev_mc_count(net_dev
) > multicast_filter_limit
) ||
2328 (net_dev
->flags
& IFF_ALLMULTI
)) {
2329 /* too many multicast addresses or accept all multicast packet */
2330 rx_mode
= RFAAB
| RFAAM
;
2331 for (i
= 0; i
< table_entries
; i
++)
2332 mc_filter
[i
] = 0xffff;
2334 /* Accept Broadcast packet, destination address matchs our
2335 * MAC address, use Receive Filter to reject unwanted MCAST
2337 struct netdev_hw_addr
*ha
;
2340 netdev_for_each_mc_addr(ha
, net_dev
) {
2341 unsigned int bit_nr
;
2343 bit_nr
= sis900_mcast_bitnr(ha
->addr
,
2344 sis_priv
->chipset_rev
);
2345 mc_filter
[bit_nr
>> 4] |= (1 << (bit_nr
& 0xf));
2349 /* update Multicast Hash Table in Receive Filter */
2350 for (i
= 0; i
< table_entries
; i
++) {
2351 /* why plus 0x04 ??, That makes the correct value for hash table. */
2352 sw32(rfcr
, (u32
)(0x00000004 + i
) << RFADDR_shift
);
2353 sw32(rfdr
, mc_filter
[i
]);
2356 sw32(rfcr
, RFEN
| rx_mode
);
2358 /* sis900 is capable of looping back packets at MAC level for
2359 * debugging purpose */
2360 if (net_dev
->flags
& IFF_LOOPBACK
) {
2362 /* We must disable Tx/Rx before setting loopback mode */
2363 cr_saved
= sr32(cr
);
2364 sw32(cr
, cr_saved
| TxDIS
| RxDIS
);
2365 /* enable loopback */
2366 sw32(txcfg
, sr32(txcfg
) | TxMLB
);
2367 sw32(rxcfg
, sr32(rxcfg
) | RxATX
);
2374 * sis900_reset - Reset sis900 MAC
2375 * @net_dev: the net device to reset
2377 * reset sis900 MAC and wait until finished
2378 * reset through command register
2379 * change backoff algorithm for 900B0 & 635 M/B
2382 static void sis900_reset(struct net_device
*net_dev
)
2384 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2385 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
2386 u32 status
= TxRCMP
| RxRCMP
;
2393 sw32(cr
, RxRESET
| TxRESET
| RESET
| sr32(cr
));
2395 /* Check that the chip has finished the reset. */
2396 for (i
= 0; status
&& (i
< 1000); i
++)
2397 status
^= sr32(isr
) & status
;
2399 if (sis_priv
->chipset_rev
>= SIS635A_900_REV
||
2400 sis_priv
->chipset_rev
== SIS900B_900_REV
)
2401 sw32(cfg
, PESEL
| RND_CNT
);
2407 * sis900_remove - Remove sis900 device
2408 * @pci_dev: the pci device to be removed
2410 * remove and release SiS900 net device
2413 static void __devexit
sis900_remove(struct pci_dev
*pci_dev
)
2415 struct net_device
*net_dev
= pci_get_drvdata(pci_dev
);
2416 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2418 unregister_netdev(net_dev
);
2420 while (sis_priv
->first_mii
) {
2421 struct mii_phy
*phy
= sis_priv
->first_mii
;
2423 sis_priv
->first_mii
= phy
->next
;
2427 pci_free_consistent(pci_dev
, RX_TOTAL_SIZE
, sis_priv
->rx_ring
,
2428 sis_priv
->rx_ring_dma
);
2429 pci_free_consistent(pci_dev
, TX_TOTAL_SIZE
, sis_priv
->tx_ring
,
2430 sis_priv
->tx_ring_dma
);
2431 pci_iounmap(pci_dev
, sis_priv
->ioaddr
);
2432 free_netdev(net_dev
);
2433 pci_release_regions(pci_dev
);
2434 pci_set_drvdata(pci_dev
, NULL
);
2439 static int sis900_suspend(struct pci_dev
*pci_dev
, pm_message_t state
)
2441 struct net_device
*net_dev
= pci_get_drvdata(pci_dev
);
2442 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2443 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
2445 if(!netif_running(net_dev
))
2448 netif_stop_queue(net_dev
);
2449 netif_device_detach(net_dev
);
2451 /* Stop the chip's Tx and Rx Status Machine */
2452 sw32(cr
, RxDIS
| TxDIS
| sr32(cr
));
2454 pci_set_power_state(pci_dev
, PCI_D3hot
);
2455 pci_save_state(pci_dev
);
2460 static int sis900_resume(struct pci_dev
*pci_dev
)
2462 struct net_device
*net_dev
= pci_get_drvdata(pci_dev
);
2463 struct sis900_private
*sis_priv
= netdev_priv(net_dev
);
2464 void __iomem
*ioaddr
= sis_priv
->ioaddr
;
2466 if(!netif_running(net_dev
))
2468 pci_restore_state(pci_dev
);
2469 pci_set_power_state(pci_dev
, PCI_D0
);
2471 sis900_init_rxfilter(net_dev
);
2473 sis900_init_tx_ring(net_dev
);
2474 sis900_init_rx_ring(net_dev
);
2476 set_rx_mode(net_dev
);
2478 netif_device_attach(net_dev
);
2479 netif_start_queue(net_dev
);
2481 /* Workaround for EDB */
2482 sis900_set_mode(sis_priv
, HW_SPEED_10_MBPS
, FDX_CAPABLE_HALF_SELECTED
);
2484 /* Enable all known interrupts by setting the interrupt mask. */
2485 sw32(imr
, RxSOVR
| RxORN
| RxERR
| RxOK
| TxURN
| TxERR
| TxIDLE
);
2486 sw32(cr
, RxENA
| sr32(cr
));
2489 sis900_check_mode(net_dev
, sis_priv
->mii
);
2493 #endif /* CONFIG_PM */
2495 static struct pci_driver sis900_pci_driver
= {
2496 .name
= SIS900_MODULE_NAME
,
2497 .id_table
= sis900_pci_tbl
,
2498 .probe
= sis900_probe
,
2499 .remove
= __devexit_p(sis900_remove
),
2501 .suspend
= sis900_suspend
,
2502 .resume
= sis900_resume
,
2503 #endif /* CONFIG_PM */
2506 static int __init
sis900_init_module(void)
2508 /* when a module, this is printed whether or not devices are found in probe */
2513 return pci_register_driver(&sis900_pci_driver
);
2516 static void __exit
sis900_cleanup_module(void)
2518 pci_unregister_driver(&sis900_pci_driver
);
2521 module_init(sis900_init_module
);
2522 module_exit(sis900_cleanup_module
);