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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002 Copyright 1999 Silicon Integrated System Corporation
Daniele Venzanod269a692006-04-17 10:28:06 +02003 Revision: 1.08.10 Apr. 2 2006
Jeff Garzik6aa20a22006-09-13 13:24:59 -04004
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 Modified from the driver which is originally written by Donald Becker.
Jeff Garzik6aa20a22006-09-13 13:24:59 -04006
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 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.
Jeff Garzik6aa20a22006-09-13 13:24:59 -040011
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 References:
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
19
Daniele Venzanod269a692006-04-17 10:28:06 +020020 Rev 1.08.10 Apr. 2 2006 Daniele Venzano add vlan (jumbo packets) support
Daniele Venzanoea37cce2005-10-11 09:44:30 +020021 Rev 1.08.09 Sep. 19 2005 Daniele Venzano add Wake on LAN support
Linus Torvalds1da177e2005-04-16 15:20:36 -070022 Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages
Daniele Venzanod269a692006-04-17 10:28:06 +020023 Rev 1.08.07 Nov. 2 2003 Daniele Venzano <venza@brownhat.org> add suspend/resume support
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 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
Jeff Garzik6aa20a22006-09-13 13:24:59 -040032 Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support
Linus Torvalds1da177e2005-04-16 15:20:36 -070033 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 eqaulizer 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
50*/
51
52#include <linux/module.h>
53#include <linux/moduleparam.h>
54#include <linux/kernel.h>
55#include <linux/string.h>
56#include <linux/timer.h>
57#include <linux/errno.h>
58#include <linux/ioport.h>
59#include <linux/slab.h>
60#include <linux/interrupt.h>
61#include <linux/pci.h>
62#include <linux/netdevice.h>
63#include <linux/init.h>
64#include <linux/mii.h>
65#include <linux/etherdevice.h>
66#include <linux/skbuff.h>
67#include <linux/delay.h>
68#include <linux/ethtool.h>
69#include <linux/crc32.h>
70#include <linux/bitops.h>
Tobias Klauser12b279f2005-04-04 18:10:18 +020071#include <linux/dma-mapping.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
73#include <asm/processor.h> /* Processor type for cache alignment. */
74#include <asm/io.h>
75#include <asm/irq.h>
76#include <asm/uaccess.h> /* User space memory access functions */
77
78#include "sis900.h"
79
80#define SIS900_MODULE_NAME "sis900"
Daniele Venzanod269a692006-04-17 10:28:06 +020081#define SIS900_DRV_VERSION "v1.08.10 Apr. 2 2006"
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
83static char version[] __devinitdata =
84KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
85
86static int max_interrupt_work = 40;
87static int multicast_filter_limit = 128;
88
89static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
90
91#define SIS900_DEF_MSG \
92 (NETIF_MSG_DRV | \
93 NETIF_MSG_LINK | \
94 NETIF_MSG_RX_ERR | \
95 NETIF_MSG_TX_ERR)
96
97/* Time in jiffies before concluding the transmitter is hung. */
98#define TX_TIMEOUT (4*HZ)
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
100enum {
101 SIS_900 = 0,
102 SIS_7016
103};
Arjan van de Venf71e1302006-03-03 21:33:57 -0500104static const char * card_names[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 "SiS 900 PCI Fast Ethernet",
106 "SiS 7016 PCI Fast Ethernet"
107};
108static struct pci_device_id sis900_pci_tbl [] = {
109 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900,
110 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900},
111 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016,
112 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016},
113 {0,}
114};
115MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
116
117static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
118
Arjan van de Venf71e1302006-03-03 21:33:57 -0500119static const struct mii_chip_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 const char * name;
121 u16 phy_id0;
122 u16 phy_id1;
123 u8 phy_types;
124#define HOME 0x0001
125#define LAN 0x0002
126#define MIX 0x0003
127#define UNKNOWN 0x0
128} mii_chip_table[] = {
129 { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
130 { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
James Camerond8e95e52006-05-10 13:33:29 -0700131 { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
Artur Skawina494aced2006-03-21 22:04:36 +0100133 { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
135 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
136 { "ICS LAN PHY", 0x0015, 0xF440, LAN },
Daniele Venzano80a80032006-08-12 11:17:03 +0200137 { "ICS LAN PHY", 0x0143, 0xBC70, LAN },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
139 { "NS 83847 PHY", 0x2000, 0x5C30, MIX },
140 { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
141 { "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
142 {NULL,},
143};
144
145struct mii_phy {
146 struct mii_phy * next;
147 int phy_addr;
148 u16 phy_id0;
149 u16 phy_id1;
150 u16 status;
151 u8 phy_types;
152};
153
154typedef struct _BufferDesc {
155 u32 link;
156 u32 cmdsts;
157 u32 bufptr;
158} BufferDesc;
159
160struct sis900_private {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 struct pci_dev * pci_dev;
162
163 spinlock_t lock;
164
165 struct mii_phy * mii;
166 struct mii_phy * first_mii; /* record the first mii structure */
167 unsigned int cur_phy;
Daniele Venzanoda369b02005-05-12 20:13:14 -0400168 struct mii_if_info mii_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
170 struct timer_list timer; /* Link status detection timer. */
171 u8 autong_complete; /* 1: auto-negotiate complete */
172
173 u32 msg_enable;
174
175 unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
176 unsigned int cur_tx, dirty_tx;
177
178 /* The saved address of a sent/receive-in-place packet buffer */
179 struct sk_buff *tx_skbuff[NUM_TX_DESC];
180 struct sk_buff *rx_skbuff[NUM_RX_DESC];
181 BufferDesc *tx_ring;
182 BufferDesc *rx_ring;
183
184 dma_addr_t tx_ring_dma;
185 dma_addr_t rx_ring_dma;
186
187 unsigned int tx_full; /* The Tx queue is full. */
188 u8 host_bridge_rev;
189 u8 chipset_rev;
190};
191
192MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
193MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
194MODULE_LICENSE("GPL");
195
196module_param(multicast_filter_limit, int, 0444);
197module_param(max_interrupt_work, int, 0444);
198module_param(sis900_debug, int, 0444);
199MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
200MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
201MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
202
203#ifdef CONFIG_NET_POLL_CONTROLLER
204static void sis900_poll(struct net_device *dev);
205#endif
206static int sis900_open(struct net_device *net_dev);
207static int sis900_mii_probe (struct net_device * net_dev);
208static void sis900_init_rxfilter (struct net_device * net_dev);
209static u16 read_eeprom(long ioaddr, int location);
Daniele Venzanoda369b02005-05-12 20:13:14 -0400210static int mdio_read(struct net_device *net_dev, int phy_id, int location);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
212static void sis900_timer(unsigned long data);
213static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
214static void sis900_tx_timeout(struct net_device *net_dev);
215static void sis900_init_tx_ring(struct net_device *net_dev);
216static void sis900_init_rx_ring(struct net_device *net_dev);
217static int sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
218static int sis900_rx(struct net_device *net_dev);
219static void sis900_finish_xmit (struct net_device *net_dev);
David Howells7d12e782006-10-05 14:55:46 +0100220static irqreturn_t sis900_interrupt(int irq, void *dev_instance);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221static int sis900_close(struct net_device *net_dev);
222static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
224static void set_rx_mode(struct net_device *net_dev);
225static void sis900_reset(struct net_device *net_dev);
226static void sis630_set_eq(struct net_device *net_dev, u8 revision);
227static int sis900_set_config(struct net_device *dev, struct ifmap *map);
228static u16 sis900_default_phy(struct net_device * net_dev);
229static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
230static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
231static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
232static void sis900_set_mode (long ioaddr, int speed, int duplex);
Jeff Garzik7282d492006-09-13 14:30:00 -0400233static const struct ethtool_ops sis900_ethtool_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234
235/**
236 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
237 * @pci_dev: the sis900 pci device
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400238 * @net_dev: the net device to get address for
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 *
240 * Older SiS900 and friends, use EEPROM to store MAC address.
241 * MAC address is read from read_eeprom() into @net_dev->dev_addr.
242 */
243
244static int __devinit sis900_get_mac_addr(struct pci_dev * pci_dev, struct net_device *net_dev)
245{
246 long ioaddr = pci_resource_start(pci_dev, 0);
247 u16 signature;
248 int i;
249
250 /* check to see if we have sane EEPROM */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400251 signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 if (signature == 0xffff || signature == 0x0000) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400253 printk (KERN_WARNING "%s: Error EERPOM read %x\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 pci_name(pci_dev), signature);
255 return 0;
256 }
257
258 /* get MAC address from EEPROM */
259 for (i = 0; i < 3; i++)
260 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
261
262 return 1;
263}
264
265/**
266 * sis630e_get_mac_addr - Get MAC address for SiS630E model
267 * @pci_dev: the sis900 pci device
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400268 * @net_dev: the net device to get address for
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 *
270 * SiS630E model, use APC CMOS RAM to store MAC address.
271 * APC CMOS RAM is accessed through ISA bridge.
272 * MAC address is read into @net_dev->dev_addr.
273 */
274
275static int __devinit sis630e_get_mac_addr(struct pci_dev * pci_dev,
276 struct net_device *net_dev)
277{
278 struct pci_dev *isa_bridge = NULL;
279 u8 reg;
280 int i;
281
282 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
283 if (!isa_bridge)
284 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
285 if (!isa_bridge) {
286 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
287 pci_name(pci_dev));
288 return 0;
289 }
290 pci_read_config_byte(isa_bridge, 0x48, &reg);
291 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
292
293 for (i = 0; i < 6; i++) {
294 outb(0x09 + i, 0x70);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400295 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 }
297 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
298 pci_dev_put(isa_bridge);
299
300 return 1;
301}
302
303
304/**
305 * sis635_get_mac_addr - Get MAC address for SIS635 model
306 * @pci_dev: the sis900 pci device
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400307 * @net_dev: the net device to get address for
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 *
309 * SiS635 model, set MAC Reload Bit to load Mac address from APC
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400310 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 * @net_dev->dev_addr.
312 */
313
314static int __devinit sis635_get_mac_addr(struct pci_dev * pci_dev,
315 struct net_device *net_dev)
316{
317 long ioaddr = net_dev->base_addr;
318 u32 rfcrSave;
319 u32 i;
320
321 rfcrSave = inl(rfcr + ioaddr);
322
323 outl(rfcrSave | RELOAD, ioaddr + cr);
324 outl(0, ioaddr + cr);
325
326 /* disable packet filtering before setting filter */
327 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
328
329 /* load MAC addr to filter data register */
330 for (i = 0 ; i < 3 ; i++) {
331 outl((i << RFADDR_shift), ioaddr + rfcr);
332 *( ((u16 *)net_dev->dev_addr) + i) = inw(ioaddr + rfdr);
333 }
334
335 /* enable packet filtering */
336 outl(rfcrSave | RFEN, rfcr + ioaddr);
337
338 return 1;
339}
340
341/**
342 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
343 * @pci_dev: the sis900 pci device
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400344 * @net_dev: the net device to get address for
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400346 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 * is shared by
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400348 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
349 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400351 * EEDONE signal to refuse EEPROM access by LAN.
352 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
353 * The signature field in SiS962 or SiS963 spec is meaningless.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 * MAC address is read into @net_dev->dev_addr.
355 */
356
357static int __devinit sis96x_get_mac_addr(struct pci_dev * pci_dev,
358 struct net_device *net_dev)
359{
360 long ioaddr = net_dev->base_addr;
361 long ee_addr = ioaddr + mear;
362 u32 waittime = 0;
363 int i;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400364
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 outl(EEREQ, ee_addr);
366 while(waittime < 2000) {
367 if(inl(ee_addr) & EEGNT) {
368
369 /* get MAC address from EEPROM */
370 for (i = 0; i < 3; i++)
371 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
372
373 outl(EEDONE, ee_addr);
374 return 1;
375 } else {
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400376 udelay(1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 waittime ++;
378 }
379 }
380 outl(EEDONE, ee_addr);
381 return 0;
382}
383
384/**
385 * sis900_probe - Probe for sis900 device
386 * @pci_dev: the sis900 pci device
387 * @pci_id: the pci device ID
388 *
389 * Check and probe sis900 net device for @pci_dev.
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400390 * Get mac address according to the chip revision,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 * and assign SiS900-specific entries in the device structure.
392 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
393 */
394
395static int __devinit sis900_probe(struct pci_dev *pci_dev,
396 const struct pci_device_id *pci_id)
397{
398 struct sis900_private *sis_priv;
399 struct net_device *net_dev;
400 struct pci_dev *dev;
401 dma_addr_t ring_dma;
402 void *ring_space;
403 long ioaddr;
404 int i, ret;
Arjan van de Venf71e1302006-03-03 21:33:57 -0500405 const char *card_name = card_names[pci_id->driver_data];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 const char *dev_name = pci_name(pci_dev);
Joe Perches0795af52007-10-03 17:59:30 -0700407 DECLARE_MAC_BUF(mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408
409/* when built into the kernel, we only print version if device is found */
410#ifndef MODULE
411 static int printed_version;
412 if (!printed_version++)
413 printk(version);
414#endif
415
416 /* setup various bits in PCI command register */
417 ret = pci_enable_device(pci_dev);
418 if(ret) return ret;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400419
Tobias Klauser12b279f2005-04-04 18:10:18 +0200420 i = pci_set_dma_mask(pci_dev, DMA_32BIT_MASK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 if(i){
Joe Perches24500222007-11-19 17:48:28 -0800422 printk(KERN_ERR "sis900.c: architecture does not support "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 "32bit PCI busmaster DMA\n");
424 return i;
425 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400426
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 pci_set_master(pci_dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400428
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 net_dev = alloc_etherdev(sizeof(struct sis900_private));
430 if (!net_dev)
431 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
433
434 /* We do a request_region() to register /proc/ioports info. */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400435 ioaddr = pci_resource_start(pci_dev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 ret = pci_request_regions(pci_dev, "sis900");
437 if (ret)
438 goto err_out;
439
440 sis_priv = net_dev->priv;
441 net_dev->base_addr = ioaddr;
442 net_dev->irq = pci_dev->irq;
443 sis_priv->pci_dev = pci_dev;
444 spin_lock_init(&sis_priv->lock);
445
446 pci_set_drvdata(pci_dev, net_dev);
447
448 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
449 if (!ring_space) {
450 ret = -ENOMEM;
451 goto err_out_cleardev;
452 }
453 sis_priv->tx_ring = (BufferDesc *)ring_space;
454 sis_priv->tx_ring_dma = ring_dma;
455
456 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
457 if (!ring_space) {
458 ret = -ENOMEM;
459 goto err_unmap_tx;
460 }
461 sis_priv->rx_ring = (BufferDesc *)ring_space;
462 sis_priv->rx_ring_dma = ring_dma;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400463
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 /* The SiS900-specific entries in the device structure. */
465 net_dev->open = &sis900_open;
466 net_dev->hard_start_xmit = &sis900_start_xmit;
467 net_dev->stop = &sis900_close;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 net_dev->set_config = &sis900_set_config;
469 net_dev->set_multicast_list = &set_rx_mode;
470 net_dev->do_ioctl = &mii_ioctl;
471 net_dev->tx_timeout = sis900_tx_timeout;
472 net_dev->watchdog_timeo = TX_TIMEOUT;
473 net_dev->ethtool_ops = &sis900_ethtool_ops;
474
475#ifdef CONFIG_NET_POLL_CONTROLLER
476 net_dev->poll_controller = &sis900_poll;
477#endif
478
479 if (sis900_debug > 0)
480 sis_priv->msg_enable = sis900_debug;
481 else
482 sis_priv->msg_enable = SIS900_DEF_MSG;
Daniele Venzanoda369b02005-05-12 20:13:14 -0400483
484 sis_priv->mii_info.dev = net_dev;
485 sis_priv->mii_info.mdio_read = mdio_read;
486 sis_priv->mii_info.mdio_write = mdio_write;
487 sis_priv->mii_info.phy_id_mask = 0x1f;
488 sis_priv->mii_info.reg_num_mask = 0x1f;
489
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 /* Get Mac address according to the chip revision */
491 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &(sis_priv->chipset_rev));
492 if(netif_msg_probe(sis_priv))
493 printk(KERN_DEBUG "%s: detected revision %2.2x, "
494 "trying to get MAC address...\n",
495 dev_name, sis_priv->chipset_rev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400496
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 ret = 0;
498 if (sis_priv->chipset_rev == SIS630E_900_REV)
499 ret = sis630e_get_mac_addr(pci_dev, net_dev);
500 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
501 ret = sis635_get_mac_addr(pci_dev, net_dev);
502 else if (sis_priv->chipset_rev == SIS96x_900_REV)
503 ret = sis96x_get_mac_addr(pci_dev, net_dev);
504 else
505 ret = sis900_get_mac_addr(pci_dev, net_dev);
506
507 if (ret == 0) {
508 printk(KERN_WARNING "%s: Cannot read MAC address.\n", dev_name);
509 ret = -ENODEV;
510 goto err_unmap_rx;
511 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400512
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 /* 630ET : set the mii access mode as software-mode */
514 if (sis_priv->chipset_rev == SIS630ET_900_REV)
515 outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
516
517 /* probe for mii transceiver */
518 if (sis900_mii_probe(net_dev) == 0) {
519 printk(KERN_WARNING "%s: Error probing MII device.\n",
520 dev_name);
521 ret = -ENODEV;
522 goto err_unmap_rx;
523 }
524
525 /* save our host bridge revision */
526 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
527 if (dev) {
528 pci_read_config_byte(dev, PCI_CLASS_REVISION, &sis_priv->host_bridge_rev);
529 pci_dev_put(dev);
530 }
531
532 ret = register_netdev(net_dev);
533 if (ret)
534 goto err_unmap_rx;
535
536 /* print some information about our NIC */
Joe Perches0795af52007-10-03 17:59:30 -0700537 printk(KERN_INFO "%s: %s at %#lx, IRQ %d, %s\n",
538 net_dev->name, card_name, ioaddr, net_dev->irq,
539 print_mac(mac, net_dev->dev_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540
Daniele Venzanoea37cce2005-10-11 09:44:30 +0200541 /* Detect Wake on Lan support */
Daniele Venzano7bef4b32006-02-25 17:01:09 -0500542 ret = (inl(net_dev->base_addr + CFGPMC) & PMESP) >> 27;
Daniele Venzanoea37cce2005-10-11 09:44:30 +0200543 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
544 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
545
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 return 0;
547
548 err_unmap_rx:
549 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
550 sis_priv->rx_ring_dma);
551 err_unmap_tx:
552 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
553 sis_priv->tx_ring_dma);
554 err_out_cleardev:
555 pci_set_drvdata(pci_dev, NULL);
556 pci_release_regions(pci_dev);
557 err_out:
558 free_netdev(net_dev);
559 return ret;
560}
561
562/**
563 * sis900_mii_probe - Probe MII PHY for sis900
564 * @net_dev: the net device to probe for
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400565 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 * Search for total of 32 possible mii phy addresses.
567 * Identify and set current phy if found one,
568 * return error if it failed to found.
569 */
570
Adrian Bunk4e50a8e2007-07-10 14:44:35 +0200571static int __devinit sis900_mii_probe(struct net_device * net_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572{
573 struct sis900_private * sis_priv = net_dev->priv;
574 const char *dev_name = pci_name(sis_priv->pci_dev);
575 u16 poll_bit = MII_STAT_LINK, status = 0;
576 unsigned long timeout = jiffies + 5 * HZ;
577 int phy_addr;
578
579 sis_priv->mii = NULL;
580
581 /* search for total of 32 possible mii phy addresses */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400582 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 struct mii_phy * mii_phy = NULL;
584 u16 mii_status;
585 int i;
586
587 mii_phy = NULL;
588 for(i = 0; i < 2; i++)
589 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
590
591 if (mii_status == 0xffff || mii_status == 0x0000) {
592 if (netif_msg_probe(sis_priv))
593 printk(KERN_DEBUG "%s: MII at address %d"
594 " not accessible\n",
595 dev_name, phy_addr);
596 continue;
597 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400598
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
600 printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n");
601 mii_phy = sis_priv->first_mii;
602 while (mii_phy) {
603 struct mii_phy *phy;
604 phy = mii_phy;
605 mii_phy = mii_phy->next;
606 kfree(phy);
607 }
608 return 0;
609 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400610
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400612 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 mii_phy->phy_addr = phy_addr;
614 mii_phy->status = mii_status;
615 mii_phy->next = sis_priv->mii;
616 sis_priv->mii = mii_phy;
617 sis_priv->first_mii = mii_phy;
618
619 for (i = 0; mii_chip_table[i].phy_id1; i++)
620 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
621 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
622 mii_phy->phy_types = mii_chip_table[i].phy_types;
623 if (mii_chip_table[i].phy_types == MIX)
624 mii_phy->phy_types =
625 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
626 printk(KERN_INFO "%s: %s transceiver found "
627 "at address %d.\n",
628 dev_name,
629 mii_chip_table[i].name,
630 phy_addr);
631 break;
632 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400633
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 if( !mii_chip_table[i].phy_id1 ) {
635 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
636 dev_name, phy_addr);
637 mii_phy->phy_types = UNKNOWN;
638 }
639 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400640
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641 if (sis_priv->mii == NULL) {
642 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
643 return 0;
644 }
645
646 /* select default PHY for mac */
647 sis_priv->mii = NULL;
648 sis900_default_phy( net_dev );
649
650 /* Reset phy if default phy is internal sis900 */
651 if ((sis_priv->mii->phy_id0 == 0x001D) &&
652 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
653 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400654
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 /* workaround for ICS1893 PHY */
656 if ((sis_priv->mii->phy_id0 == 0x0015) &&
657 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
658 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
659
660 if(status & MII_STAT_LINK){
661 while (poll_bit) {
662 yield();
663
664 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
665 if (time_after_eq(jiffies, timeout)) {
666 printk(KERN_WARNING "%s: reset phy and link down now\n",
667 dev_name);
668 return -ETIME;
669 }
670 }
671 }
672
673 if (sis_priv->chipset_rev == SIS630E_900_REV) {
674 /* SiS 630E has some bugs on default value of PHY registers */
675 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
676 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
677 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
678 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400679 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 }
681
682 if (sis_priv->mii->status & MII_STAT_LINK)
683 netif_carrier_on(net_dev);
684 else
685 netif_carrier_off(net_dev);
686
687 return 1;
688}
689
690/**
691 * sis900_default_phy - Select default PHY for sis900 mac.
692 * @net_dev: the net device to probe for
693 *
694 * Select first detected PHY with link as default.
695 * If no one is link on, select PHY whose types is HOME as default.
696 * If HOME doesn't exist, select LAN.
697 */
698
699static u16 sis900_default_phy(struct net_device * net_dev)
700{
701 struct sis900_private * sis_priv = net_dev->priv;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400702 struct mii_phy *phy = NULL, *phy_home = NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 *default_phy = NULL, *phy_lan = NULL;
704 u16 status;
705
706 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
707 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
708 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
709
710 /* Link ON & Not select default PHY & not ghost PHY */
711 if ((status & MII_STAT_LINK) && !default_phy &&
712 (phy->phy_types != UNKNOWN))
713 default_phy = phy;
714 else {
715 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
716 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
717 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
718 if (phy->phy_types == HOME)
719 phy_home = phy;
720 else if(phy->phy_types == LAN)
721 phy_lan = phy;
722 }
723 }
724
725 if (!default_phy && phy_home)
726 default_phy = phy_home;
727 else if (!default_phy && phy_lan)
728 default_phy = phy_lan;
729 else if (!default_phy)
730 default_phy = sis_priv->first_mii;
731
732 if (sis_priv->mii != default_phy) {
733 sis_priv->mii = default_phy;
734 sis_priv->cur_phy = default_phy->phy_addr;
735 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
736 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
737 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400738
Daniele Venzanoda369b02005-05-12 20:13:14 -0400739 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
740
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
742 status &= (~MII_CNTL_ISOLATE);
743
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400744 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
746 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
747
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400748 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749}
750
751
752/**
753 * sis900_set_capability - set the media capability of network adapter.
754 * @net_dev : the net device to probe for
755 * @phy : default PHY
756 *
757 * Set the media capability of network adapter according to
758 * mii status register. It's necessary before auto-negotiate.
759 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400760
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
762{
763 u16 cap;
764 u16 status;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400765
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
767 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400768
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 cap = MII_NWAY_CSMA_CD |
770 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
771 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
772 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
773 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
774
775 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
776}
777
778
779/* Delay between EEPROM clock transitions. */
780#define eeprom_delay() inl(ee_addr)
781
782/**
783 * read_eeprom - Read Serial EEPROM
784 * @ioaddr: base i/o address
785 * @location: the EEPROM location to read
786 *
787 * Read Serial EEPROM through EEPROM Access Register.
788 * Note that location is in word (16 bits) unit
789 */
790
791static u16 __devinit read_eeprom(long ioaddr, int location)
792{
793 int i;
794 u16 retval = 0;
795 long ee_addr = ioaddr + mear;
796 u32 read_cmd = location | EEread;
797
798 outl(0, ee_addr);
799 eeprom_delay();
800 outl(EECS, ee_addr);
801 eeprom_delay();
802
803 /* Shift the read command (9) bits out. */
804 for (i = 8; i >= 0; i--) {
805 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
806 outl(dataval, ee_addr);
807 eeprom_delay();
808 outl(dataval | EECLK, ee_addr);
809 eeprom_delay();
810 }
811 outl(EECS, ee_addr);
812 eeprom_delay();
813
814 /* read the 16-bits data in */
815 for (i = 16; i > 0; i--) {
816 outl(EECS, ee_addr);
817 eeprom_delay();
818 outl(EECS | EECLK, ee_addr);
819 eeprom_delay();
820 retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
821 eeprom_delay();
822 }
823
824 /* Terminate the EEPROM access. */
825 outl(0, ee_addr);
826 eeprom_delay();
827
828 return (retval);
829}
830
831/* Read and write the MII management registers using software-generated
832 serial MDIO protocol. Note that the command bits and data bits are
833 send out separately */
834#define mdio_delay() inl(mdio_addr)
835
836static void mdio_idle(long mdio_addr)
837{
838 outl(MDIO | MDDIR, mdio_addr);
839 mdio_delay();
840 outl(MDIO | MDDIR | MDC, mdio_addr);
841}
842
843/* Syncronize the MII management interface by shifting 32 one bits out. */
844static void mdio_reset(long mdio_addr)
845{
846 int i;
847
848 for (i = 31; i >= 0; i--) {
849 outl(MDDIR | MDIO, mdio_addr);
850 mdio_delay();
851 outl(MDDIR | MDIO | MDC, mdio_addr);
852 mdio_delay();
853 }
854 return;
855}
856
857/**
858 * mdio_read - read MII PHY register
859 * @net_dev: the net device to read
860 * @phy_id: the phy address to read
861 * @location: the phy regiester id to read
862 *
863 * Read MII registers through MDIO and MDC
864 * using MDIO management frame structure and protocol(defined by ISO/IEC).
865 * Please see SiS7014 or ICS spec
866 */
867
Daniele Venzanoda369b02005-05-12 20:13:14 -0400868static int mdio_read(struct net_device *net_dev, int phy_id, int location)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869{
870 long mdio_addr = net_dev->base_addr + mear;
871 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
872 u16 retval = 0;
873 int i;
874
875 mdio_reset(mdio_addr);
876 mdio_idle(mdio_addr);
877
878 for (i = 15; i >= 0; i--) {
879 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
880 outl(dataval, mdio_addr);
881 mdio_delay();
882 outl(dataval | MDC, mdio_addr);
883 mdio_delay();
884 }
885
886 /* Read the 16 data bits. */
887 for (i = 16; i > 0; i--) {
888 outl(0, mdio_addr);
889 mdio_delay();
890 retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
891 outl(MDC, mdio_addr);
892 mdio_delay();
893 }
894 outl(0x00, mdio_addr);
895
896 return retval;
897}
898
899/**
900 * mdio_write - write MII PHY register
901 * @net_dev: the net device to write
902 * @phy_id: the phy address to write
903 * @location: the phy regiester id to write
904 * @value: the register value to write with
905 *
906 * Write MII registers with @value through MDIO and MDC
907 * using MDIO management frame structure and protocol(defined by ISO/IEC)
908 * please see SiS7014 or ICS spec
909 */
910
911static void mdio_write(struct net_device *net_dev, int phy_id, int location,
912 int value)
913{
914 long mdio_addr = net_dev->base_addr + mear;
915 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
916 int i;
917
918 mdio_reset(mdio_addr);
919 mdio_idle(mdio_addr);
920
921 /* Shift the command bits out. */
922 for (i = 15; i >= 0; i--) {
923 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
924 outb(dataval, mdio_addr);
925 mdio_delay();
926 outb(dataval | MDC, mdio_addr);
927 mdio_delay();
928 }
929 mdio_delay();
930
931 /* Shift the value bits out. */
932 for (i = 15; i >= 0; i--) {
933 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
934 outl(dataval, mdio_addr);
935 mdio_delay();
936 outl(dataval | MDC, mdio_addr);
937 mdio_delay();
938 }
939 mdio_delay();
940
941 /* Clear out extra bits. */
942 for (i = 2; i > 0; i--) {
943 outb(0, mdio_addr);
944 mdio_delay();
945 outb(MDC, mdio_addr);
946 mdio_delay();
947 }
948 outl(0x00, mdio_addr);
949
950 return;
951}
952
953
954/**
955 * sis900_reset_phy - reset sis900 mii phy.
956 * @net_dev: the net device to write
957 * @phy_addr: default phy address
958 *
959 * Some specific phy can't work properly without reset.
960 * This function will be called during initialization and
961 * link status change from ON to DOWN.
962 */
963
964static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
965{
Andrew Mortonf3be9742007-03-06 02:41:55 -0800966 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 u16 status;
968
Andrew Mortonf3be9742007-03-06 02:41:55 -0800969 for (i = 0; i < 2; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970 status = mdio_read(net_dev, phy_addr, MII_STATUS);
971
972 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400973
Linus Torvalds1da177e2005-04-16 15:20:36 -0700974 return status;
975}
976
977#ifdef CONFIG_NET_POLL_CONTROLLER
978/*
979 * Polling 'interrupt' - used by things like netconsole to send skbs
980 * without having to re-enable interrupts. It's not called while
981 * the interrupt routine is executing.
982*/
983static void sis900_poll(struct net_device *dev)
984{
985 disable_irq(dev->irq);
David Howells7d12e782006-10-05 14:55:46 +0100986 sis900_interrupt(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987 enable_irq(dev->irq);
988}
989#endif
990
991/**
992 * sis900_open - open sis900 device
993 * @net_dev: the net device to open
994 *
995 * Do some initialization and start net interface.
996 * enable interrupts and set sis900 timer.
997 */
998
999static int
1000sis900_open(struct net_device *net_dev)
1001{
1002 struct sis900_private *sis_priv = net_dev->priv;
1003 long ioaddr = net_dev->base_addr;
1004 int ret;
1005
1006 /* Soft reset the chip. */
1007 sis900_reset(net_dev);
1008
1009 /* Equalizer workaround Rule */
1010 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1011
Thomas Gleixner1fb9df52006-07-01 19:29:39 -07001012 ret = request_irq(net_dev->irq, &sis900_interrupt, IRQF_SHARED,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013 net_dev->name, net_dev);
1014 if (ret)
1015 return ret;
1016
1017 sis900_init_rxfilter(net_dev);
1018
1019 sis900_init_tx_ring(net_dev);
1020 sis900_init_rx_ring(net_dev);
1021
1022 set_rx_mode(net_dev);
1023
1024 netif_start_queue(net_dev);
1025
1026 /* Workaround for EDB */
1027 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1028
1029 /* Enable all known interrupts by setting the interrupt mask. */
1030 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1031 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
1032 outl(IE, ioaddr + ier);
1033
1034 sis900_check_mode(net_dev, sis_priv->mii);
1035
1036 /* Set the timer to switch to check for link beat and perhaps switch
1037 to an alternate media type. */
1038 init_timer(&sis_priv->timer);
1039 sis_priv->timer.expires = jiffies + HZ;
1040 sis_priv->timer.data = (unsigned long)net_dev;
1041 sis_priv->timer.function = &sis900_timer;
1042 add_timer(&sis_priv->timer);
1043
1044 return 0;
1045}
1046
1047/**
1048 * sis900_init_rxfilter - Initialize the Rx filter
1049 * @net_dev: the net device to initialize for
1050 *
1051 * Set receive filter address to our MAC address
1052 * and enable packet filtering.
1053 */
1054
1055static void
1056sis900_init_rxfilter (struct net_device * net_dev)
1057{
1058 struct sis900_private *sis_priv = net_dev->priv;
1059 long ioaddr = net_dev->base_addr;
1060 u32 rfcrSave;
1061 u32 i;
1062
1063 rfcrSave = inl(rfcr + ioaddr);
1064
1065 /* disable packet filtering before setting filter */
1066 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
1067
1068 /* load MAC addr to filter data register */
1069 for (i = 0 ; i < 3 ; i++) {
1070 u32 w;
1071
1072 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1073 outl((i << RFADDR_shift), ioaddr + rfcr);
1074 outl(w, ioaddr + rfdr);
1075
1076 if (netif_msg_hw(sis_priv)) {
1077 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1078 net_dev->name, i, inl(ioaddr + rfdr));
1079 }
1080 }
1081
1082 /* enable packet filtering */
1083 outl(rfcrSave | RFEN, rfcr + ioaddr);
1084}
1085
1086/**
1087 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1088 * @net_dev: the net device to initialize for
1089 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001090 * Initialize the Tx descriptor ring,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091 */
1092
1093static void
1094sis900_init_tx_ring(struct net_device *net_dev)
1095{
1096 struct sis900_private *sis_priv = net_dev->priv;
1097 long ioaddr = net_dev->base_addr;
1098 int i;
1099
1100 sis_priv->tx_full = 0;
1101 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1102
1103 for (i = 0; i < NUM_TX_DESC; i++) {
1104 sis_priv->tx_skbuff[i] = NULL;
1105
1106 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1107 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1108 sis_priv->tx_ring[i].cmdsts = 0;
1109 sis_priv->tx_ring[i].bufptr = 0;
1110 }
1111
1112 /* load Transmit Descriptor Register */
1113 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1114 if (netif_msg_hw(sis_priv))
1115 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1116 net_dev->name, inl(ioaddr + txdp));
1117}
1118
1119/**
1120 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1121 * @net_dev: the net device to initialize for
1122 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001123 * Initialize the Rx descriptor ring,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001124 * and pre-allocate recevie buffers (socket buffer)
1125 */
1126
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001127static void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128sis900_init_rx_ring(struct net_device *net_dev)
1129{
1130 struct sis900_private *sis_priv = net_dev->priv;
1131 long ioaddr = net_dev->base_addr;
1132 int i;
1133
1134 sis_priv->cur_rx = 0;
1135 sis_priv->dirty_rx = 0;
1136
1137 /* init RX descriptor */
1138 for (i = 0; i < NUM_RX_DESC; i++) {
1139 sis_priv->rx_skbuff[i] = NULL;
1140
1141 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1142 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1143 sis_priv->rx_ring[i].cmdsts = 0;
1144 sis_priv->rx_ring[i].bufptr = 0;
1145 }
1146
1147 /* allocate sock buffers */
1148 for (i = 0; i < NUM_RX_DESC; i++) {
1149 struct sk_buff *skb;
1150
1151 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1152 /* not enough memory for skbuff, this makes a "hole"
1153 on the buffer ring, it is not clear how the
1154 hardware will react to this kind of degenerated
1155 buffer */
1156 break;
1157 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158 sis_priv->rx_skbuff[i] = skb;
1159 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1160 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
David S. Miller689be432005-06-28 15:25:31 -07001161 skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162 }
1163 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1164
1165 /* load Receive Descriptor Register */
1166 outl(sis_priv->rx_ring_dma, ioaddr + rxdp);
1167 if (netif_msg_hw(sis_priv))
1168 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1169 net_dev->name, inl(ioaddr + rxdp));
1170}
1171
1172/**
1173 * sis630_set_eq - set phy equalizer value for 630 LAN
1174 * @net_dev: the net device to set equalizer value
1175 * @revision: 630 LAN revision number
1176 *
1177 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1178 * PHY register 14h(Test)
1179 * Bit 14: 0 -- Automatically dectect (default)
1180 * 1 -- Manually set Equalizer filter
1181 * Bit 13: 0 -- (Default)
1182 * 1 -- Speed up convergence of equalizer setting
1183 * Bit 9 : 0 -- (Default)
1184 * 1 -- Disable Baseline Wander
1185 * Bit 3~7 -- Equalizer filter setting
1186 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1187 * Then calculate equalizer value
1188 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1189 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1190 * Calculate Equalizer value:
1191 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-dectect proper equalizer value.
1192 * When the equalizer is stable, this value is not a fixed value. It will be within
1193 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1194 * 0 <= max <= 4 --> set equalizer to max
1195 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1196 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1197 */
1198
1199static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1200{
1201 struct sis900_private *sis_priv = net_dev->priv;
1202 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1203 int i, maxcount=10;
1204
1205 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1206 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1207 return;
1208
1209 if (netif_carrier_ok(net_dev)) {
1210 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1211 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1212 (0x2200 | reg14h) & 0xBFFF);
1213 for (i=0; i < maxcount; i++) {
1214 eq_value = (0x00F8 & mdio_read(net_dev,
1215 sis_priv->cur_phy, MII_RESV)) >> 3;
1216 if (i == 0)
1217 max_value=min_value=eq_value;
1218 max_value = (eq_value > max_value) ?
1219 eq_value : max_value;
1220 min_value = (eq_value < min_value) ?
1221 eq_value : min_value;
1222 }
1223 /* 630E rule to determine the equalizer value */
1224 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1225 revision == SIS630ET_900_REV) {
1226 if (max_value < 5)
1227 eq_value = max_value;
1228 else if (max_value >= 5 && max_value < 15)
1229 eq_value = (max_value == min_value) ?
1230 max_value+2 : max_value+1;
1231 else if (max_value >= 15)
1232 eq_value=(max_value == min_value) ?
1233 max_value+6 : max_value+5;
1234 }
1235 /* 630B0&B1 rule to determine the equalizer value */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001236 if (revision == SIS630A_900_REV &&
1237 (sis_priv->host_bridge_rev == SIS630B0 ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238 sis_priv->host_bridge_rev == SIS630B1)) {
1239 if (max_value == 0)
1240 eq_value = 3;
1241 else
1242 eq_value = (max_value + min_value + 1)/2;
1243 }
1244 /* write equalizer value and setting */
1245 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1246 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1247 reg14h = (reg14h | 0x6000) & 0xFDFF;
1248 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1249 } else {
1250 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001251 if (revision == SIS630A_900_REV &&
1252 (sis_priv->host_bridge_rev == SIS630B0 ||
1253 sis_priv->host_bridge_rev == SIS630B1))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1255 (reg14h | 0x2200) & 0xBFFF);
1256 else
1257 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1258 (reg14h | 0x2000) & 0xBFFF);
1259 }
1260 return;
1261}
1262
1263/**
1264 * sis900_timer - sis900 timer routine
1265 * @data: pointer to sis900 net device
1266 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001267 * On each timer ticks we check two things,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268 * link status (ON/OFF) and link mode (10/100/Full/Half)
1269 */
1270
1271static void sis900_timer(unsigned long data)
1272{
1273 struct net_device *net_dev = (struct net_device *)data;
1274 struct sis900_private *sis_priv = net_dev->priv;
1275 struct mii_phy *mii_phy = sis_priv->mii;
Arjan van de Venf71e1302006-03-03 21:33:57 -05001276 static const int next_tick = 5*HZ;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277 u16 status;
1278
1279 if (!sis_priv->autong_complete){
1280 int speed, duplex = 0;
1281
1282 sis900_read_mode(net_dev, &speed, &duplex);
1283 if (duplex){
1284 sis900_set_mode(net_dev->base_addr, speed, duplex);
1285 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1286 netif_start_queue(net_dev);
1287 }
1288
1289 sis_priv->timer.expires = jiffies + HZ;
1290 add_timer(&sis_priv->timer);
1291 return;
1292 }
1293
1294 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1295 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1296
1297 /* Link OFF -> ON */
1298 if (!netif_carrier_ok(net_dev)) {
1299 LookForLink:
1300 /* Search for new PHY */
1301 status = sis900_default_phy(net_dev);
1302 mii_phy = sis_priv->mii;
1303
1304 if (status & MII_STAT_LINK){
1305 sis900_check_mode(net_dev, mii_phy);
1306 netif_carrier_on(net_dev);
1307 }
1308 } else {
1309 /* Link ON -> OFF */
1310 if (!(status & MII_STAT_LINK)){
1311 netif_carrier_off(net_dev);
1312 if(netif_msg_link(sis_priv))
1313 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1314
1315 /* Change mode issue */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001316 if ((mii_phy->phy_id0 == 0x001D) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001317 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1318 sis900_reset_phy(net_dev, sis_priv->cur_phy);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001319
Linus Torvalds1da177e2005-04-16 15:20:36 -07001320 sis630_set_eq(net_dev, sis_priv->chipset_rev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001321
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322 goto LookForLink;
1323 }
1324 }
1325
1326 sis_priv->timer.expires = jiffies + next_tick;
1327 add_timer(&sis_priv->timer);
1328}
1329
1330/**
1331 * sis900_check_mode - check the media mode for sis900
1332 * @net_dev: the net device to be checked
1333 * @mii_phy: the mii phy
1334 *
1335 * Older driver gets the media mode from mii status output
1336 * register. Now we set our media capability and auto-negotiate
1337 * to get the upper bound of speed and duplex between two ends.
1338 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1339 * and autong_complete should be set to 1.
1340 */
1341
1342static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1343{
1344 struct sis900_private *sis_priv = net_dev->priv;
1345 long ioaddr = net_dev->base_addr;
1346 int speed, duplex;
1347
1348 if (mii_phy->phy_types == LAN) {
1349 outl(~EXD & inl(ioaddr + cfg), ioaddr + cfg);
1350 sis900_set_capability(net_dev , mii_phy);
1351 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1352 } else {
1353 outl(EXD | inl(ioaddr + cfg), ioaddr + cfg);
1354 speed = HW_SPEED_HOME;
1355 duplex = FDX_CAPABLE_HALF_SELECTED;
1356 sis900_set_mode(ioaddr, speed, duplex);
1357 sis_priv->autong_complete = 1;
1358 }
1359}
1360
1361/**
1362 * sis900_set_mode - Set the media mode of mac register.
1363 * @ioaddr: the address of the device
1364 * @speed : the transmit speed to be determined
1365 * @duplex: the duplex mode to be determined
1366 *
1367 * Set the media mode of mac register txcfg/rxcfg according to
1368 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1369 * bus is used instead of PCI bus. When this bit is set 1, the
1370 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1371 * double words.
1372 */
1373
1374static void sis900_set_mode (long ioaddr, int speed, int duplex)
1375{
1376 u32 tx_flags = 0, rx_flags = 0;
1377
1378 if (inl(ioaddr + cfg) & EDB_MASTER_EN) {
1379 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1380 (TX_FILL_THRESH << TxFILLT_shift);
1381 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1382 } else {
1383 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1384 (TX_FILL_THRESH << TxFILLT_shift);
1385 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1386 }
1387
1388 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1389 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1390 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1391 } else {
1392 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1393 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1394 }
1395
1396 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1397 tx_flags |= (TxCSI | TxHBI);
1398 rx_flags |= RxATX;
1399 }
1400
Daniele Venzanod269a692006-04-17 10:28:06 +02001401#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1402 /* Can accept Jumbo packet */
1403 rx_flags |= RxAJAB;
1404#endif
1405
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406 outl (tx_flags, ioaddr + txcfg);
1407 outl (rx_flags, ioaddr + rxcfg);
1408}
1409
1410/**
1411 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1412 * @net_dev: the net device to read mode for
1413 * @phy_addr: mii phy address
1414 *
1415 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1416 * autong_complete should be set to 0 when starting auto-negotiation.
1417 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1418 * sis900_timer will wait for link on again if autong_complete = 0.
1419 */
1420
1421static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1422{
1423 struct sis900_private *sis_priv = net_dev->priv;
1424 int i = 0;
1425 u32 status;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001426
Andrew Mortonf3be9742007-03-06 02:41:55 -08001427 for (i = 0; i < 2; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1429
1430 if (!(status & MII_STAT_LINK)){
1431 if(netif_msg_link(sis_priv))
1432 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1433 sis_priv->autong_complete = 1;
1434 netif_carrier_off(net_dev);
1435 return;
1436 }
1437
1438 /* (Re)start AutoNegotiate */
1439 mdio_write(net_dev, phy_addr, MII_CONTROL,
1440 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1441 sis_priv->autong_complete = 0;
1442}
1443
1444
1445/**
1446 * sis900_read_mode - read media mode for sis900 internal phy
1447 * @net_dev: the net device to read mode for
1448 * @speed : the transmit speed to be determined
1449 * @duplex : the duplex mode to be determined
1450 *
1451 * The capability of remote end will be put in mii register autorec
1452 * after auto-negotiation. Use AND operation to get the upper bound
1453 * of speed and duplex between two ends.
1454 */
1455
1456static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1457{
1458 struct sis900_private *sis_priv = net_dev->priv;
1459 struct mii_phy *phy = sis_priv->mii;
1460 int phy_addr = sis_priv->cur_phy;
1461 u32 status;
1462 u16 autoadv, autorec;
Andrew Mortonf3be9742007-03-06 02:41:55 -08001463 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464
Andrew Mortonf3be9742007-03-06 02:41:55 -08001465 for (i = 0; i < 2; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1467
1468 if (!(status & MII_STAT_LINK))
1469 return;
1470
1471 /* AutoNegotiate completed */
1472 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1473 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1474 status = autoadv & autorec;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001475
Linus Torvalds1da177e2005-04-16 15:20:36 -07001476 *speed = HW_SPEED_10_MBPS;
1477 *duplex = FDX_CAPABLE_HALF_SELECTED;
1478
1479 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1480 *speed = HW_SPEED_100_MBPS;
1481 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1482 *duplex = FDX_CAPABLE_FULL_SELECTED;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001483
Linus Torvalds1da177e2005-04-16 15:20:36 -07001484 sis_priv->autong_complete = 1;
1485
1486 /* Workaround for Realtek RTL8201 PHY issue */
1487 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1488 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1489 *duplex = FDX_CAPABLE_FULL_SELECTED;
1490 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1491 *speed = HW_SPEED_100_MBPS;
1492 }
1493
1494 if(netif_msg_link(sis_priv))
1495 printk(KERN_INFO "%s: Media Link On %s %s-duplex \n",
1496 net_dev->name,
1497 *speed == HW_SPEED_100_MBPS ?
1498 "100mbps" : "10mbps",
1499 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1500 "full" : "half");
1501}
1502
1503/**
1504 * sis900_tx_timeout - sis900 transmit timeout routine
1505 * @net_dev: the net device to transmit
1506 *
1507 * print transmit timeout status
1508 * disable interrupts and do some tasks
1509 */
1510
1511static void sis900_tx_timeout(struct net_device *net_dev)
1512{
1513 struct sis900_private *sis_priv = net_dev->priv;
1514 long ioaddr = net_dev->base_addr;
1515 unsigned long flags;
1516 int i;
1517
1518 if(netif_msg_tx_err(sis_priv))
1519 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x \n",
1520 net_dev->name, inl(ioaddr + cr), inl(ioaddr + isr));
1521
1522 /* Disable interrupts by clearing the interrupt mask. */
1523 outl(0x0000, ioaddr + imr);
1524
1525 /* use spinlock to prevent interrupt handler accessing buffer ring */
1526 spin_lock_irqsave(&sis_priv->lock, flags);
1527
1528 /* discard unsent packets */
1529 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1530 for (i = 0; i < NUM_TX_DESC; i++) {
1531 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1532
1533 if (skb) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001534 pci_unmap_single(sis_priv->pci_dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001535 sis_priv->tx_ring[i].bufptr, skb->len,
1536 PCI_DMA_TODEVICE);
1537 dev_kfree_skb_irq(skb);
1538 sis_priv->tx_skbuff[i] = NULL;
1539 sis_priv->tx_ring[i].cmdsts = 0;
1540 sis_priv->tx_ring[i].bufptr = 0;
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001541 net_dev->stats.tx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001542 }
1543 }
1544 sis_priv->tx_full = 0;
1545 netif_wake_queue(net_dev);
1546
1547 spin_unlock_irqrestore(&sis_priv->lock, flags);
1548
1549 net_dev->trans_start = jiffies;
1550
1551 /* load Transmit Descriptor Register */
1552 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1553
1554 /* Enable all known interrupts by setting the interrupt mask. */
1555 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1556 return;
1557}
1558
1559/**
1560 * sis900_start_xmit - sis900 start transmit routine
1561 * @skb: socket buffer pointer to put the data being transmitted
1562 * @net_dev: the net device to transmit with
1563 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001564 * Set the transmit buffer descriptor,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565 * and write TxENA to enable transmit state machine.
1566 * tell upper layer if the buffer is full
1567 */
1568
1569static int
1570sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1571{
1572 struct sis900_private *sis_priv = net_dev->priv;
1573 long ioaddr = net_dev->base_addr;
1574 unsigned int entry;
1575 unsigned long flags;
1576 unsigned int index_cur_tx, index_dirty_tx;
1577 unsigned int count_dirty_tx;
1578
1579 /* Don't transmit data before the complete of auto-negotiation */
1580 if(!sis_priv->autong_complete){
1581 netif_stop_queue(net_dev);
1582 return 1;
1583 }
1584
1585 spin_lock_irqsave(&sis_priv->lock, flags);
1586
1587 /* Calculate the next Tx descriptor entry. */
1588 entry = sis_priv->cur_tx % NUM_TX_DESC;
1589 sis_priv->tx_skbuff[entry] = skb;
1590
1591 /* set the transmit buffer descriptor and enable Transmit State Machine */
1592 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1593 skb->data, skb->len, PCI_DMA_TODEVICE);
1594 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1595 outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
1596
1597 sis_priv->cur_tx ++;
1598 index_cur_tx = sis_priv->cur_tx;
1599 index_dirty_tx = sis_priv->dirty_tx;
1600
1601 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1602 count_dirty_tx ++;
1603
1604 if (index_cur_tx == index_dirty_tx) {
1605 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1606 sis_priv->tx_full = 1;
1607 netif_stop_queue(net_dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001608 } else if (count_dirty_tx < NUM_TX_DESC) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001609 /* Typical path, tell upper layer that more transmission is possible */
1610 netif_start_queue(net_dev);
1611 } else {
1612 /* buffer full, tell upper layer no more transmission */
1613 sis_priv->tx_full = 1;
1614 netif_stop_queue(net_dev);
1615 }
1616
1617 spin_unlock_irqrestore(&sis_priv->lock, flags);
1618
1619 net_dev->trans_start = jiffies;
1620
1621 if (netif_msg_tx_queued(sis_priv))
1622 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1623 "to slot %d.\n",
1624 net_dev->name, skb->data, (int)skb->len, entry);
1625
1626 return 0;
1627}
1628
1629/**
1630 * sis900_interrupt - sis900 interrupt handler
1631 * @irq: the irq number
1632 * @dev_instance: the client data object
1633 * @regs: snapshot of processor context
1634 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001635 * The interrupt handler does all of the Rx thread work,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001636 * and cleans up after the Tx thread
1637 */
1638
David Howells7d12e782006-10-05 14:55:46 +01001639static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001640{
1641 struct net_device *net_dev = dev_instance;
1642 struct sis900_private *sis_priv = net_dev->priv;
1643 int boguscnt = max_interrupt_work;
1644 long ioaddr = net_dev->base_addr;
1645 u32 status;
1646 unsigned int handled = 0;
1647
1648 spin_lock (&sis_priv->lock);
1649
1650 do {
1651 status = inl(ioaddr + isr);
1652
1653 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1654 /* nothing intresting happened */
1655 break;
1656 handled = 1;
1657
1658 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1659 if (status & (RxORN | RxERR | RxOK))
1660 /* Rx interrupt */
1661 sis900_rx(net_dev);
1662
1663 if (status & (TxURN | TxERR | TxIDLE))
1664 /* Tx interrupt */
1665 sis900_finish_xmit(net_dev);
1666
1667 /* something strange happened !!! */
1668 if (status & HIBERR) {
1669 if(netif_msg_intr(sis_priv))
Joe Perches24500222007-11-19 17:48:28 -08001670 printk(KERN_INFO "%s: Abnormal interrupt, "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001671 "status %#8.8x.\n", net_dev->name, status);
1672 break;
1673 }
1674 if (--boguscnt < 0) {
1675 if(netif_msg_intr(sis_priv))
1676 printk(KERN_INFO "%s: Too much work at interrupt, "
1677 "interrupt status = %#8.8x.\n",
1678 net_dev->name, status);
1679 break;
1680 }
1681 } while (1);
1682
1683 if(netif_msg_intr(sis_priv))
1684 printk(KERN_DEBUG "%s: exiting interrupt, "
1685 "interrupt status = 0x%#8.8x.\n",
1686 net_dev->name, inl(ioaddr + isr));
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001687
Linus Torvalds1da177e2005-04-16 15:20:36 -07001688 spin_unlock (&sis_priv->lock);
1689 return IRQ_RETVAL(handled);
1690}
1691
1692/**
1693 * sis900_rx - sis900 receive routine
1694 * @net_dev: the net device which receives data
1695 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001696 * Process receive interrupt events,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001697 * put buffer to higher layer and refill buffer pool
Akinobu Mita0b280022006-03-26 01:38:58 -08001698 * Note: This function is called by interrupt handler,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001699 * don't do "too much" work here
1700 */
1701
1702static int sis900_rx(struct net_device *net_dev)
1703{
1704 struct sis900_private *sis_priv = net_dev->priv;
1705 long ioaddr = net_dev->base_addr;
1706 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1707 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
Vasily Averin7380a78a2005-10-28 16:46:35 -04001708 int rx_work_limit;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001709
1710 if (netif_msg_rx_status(sis_priv))
1711 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1712 "status:0x%8.8x\n",
1713 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
Vasily Averin7380a78a2005-10-28 16:46:35 -04001714 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715
1716 while (rx_status & OWN) {
1717 unsigned int rx_size;
Daniele Venzanod269a692006-04-17 10:28:06 +02001718 unsigned int data_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001719
Vasily Averin7380a78a2005-10-28 16:46:35 -04001720 if (--rx_work_limit < 0)
1721 break;
1722
Daniele Venzanod269a692006-04-17 10:28:06 +02001723 data_size = rx_status & DSIZE;
1724 rx_size = data_size - CRC_SIZE;
1725
1726#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1727 /* ``TOOLONG'' flag means jumbo packet recived. */
1728 if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
1729 rx_status &= (~ ((unsigned int)TOOLONG));
1730#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001731
1732 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1733 /* corrupted packet received */
1734 if (netif_msg_rx_err(sis_priv))
1735 printk(KERN_DEBUG "%s: Corrupted packet "
Daniele Venzanod269a692006-04-17 10:28:06 +02001736 "received, buffer status = 0x%8.8x/%d.\n",
1737 net_dev->name, rx_status, data_size);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001738 net_dev->stats.rx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001739 if (rx_status & OVERRUN)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001740 net_dev->stats.rx_over_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001741 if (rx_status & (TOOLONG|RUNT))
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001742 net_dev->stats.rx_length_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001743 if (rx_status & (RXISERR | FAERR))
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001744 net_dev->stats.rx_frame_errors++;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001745 if (rx_status & CRCERR)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001746 net_dev->stats.rx_crc_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001747 /* reset buffer descriptor state */
1748 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1749 } else {
1750 struct sk_buff * skb;
Neil Hormandc5a1442007-04-26 13:47:36 -04001751 struct sk_buff * rx_skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001752
Neil Hormanb748d9e2007-04-20 09:54:58 -04001753 pci_unmap_single(sis_priv->pci_dev,
1754 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1755 PCI_DMA_FROMDEVICE);
1756
1757 /* refill the Rx buffer, what if there is not enought
1758 * memory for new socket buffer ?? */
1759 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1760 /*
1761 * Not enough memory to refill the buffer
1762 * so we need to recycle the old one so
1763 * as to avoid creating a memory hole
1764 * in the rx ring
1765 */
1766 skb = sis_priv->rx_skbuff[entry];
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001767 net_dev->stats.rx_dropped++;
Neil Hormanb748d9e2007-04-20 09:54:58 -04001768 goto refill_rx_ring;
Jeff Garzik7d2e3cb2008-05-13 01:41:58 -04001769 }
Neil Hormanb748d9e2007-04-20 09:54:58 -04001770
Linus Torvalds1da177e2005-04-16 15:20:36 -07001771 /* This situation should never happen, but due to
1772 some unknow bugs, it is possible that
1773 we are working on NULL sk_buff :-( */
1774 if (sis_priv->rx_skbuff[entry] == NULL) {
1775 if (netif_msg_rx_err(sis_priv))
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001776 printk(KERN_WARNING "%s: NULL pointer "
Vasily Averin7380a78a2005-10-28 16:46:35 -04001777 "encountered in Rx ring\n"
1778 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1779 net_dev->name, sis_priv->cur_rx,
1780 sis_priv->dirty_rx);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001781 break;
1782 }
1783
Linus Torvalds1da177e2005-04-16 15:20:36 -07001784 /* give the socket buffer to upper layers */
Neil Hormandc5a1442007-04-26 13:47:36 -04001785 rx_skb = sis_priv->rx_skbuff[entry];
1786 skb_put(rx_skb, rx_size);
1787 rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
1788 netif_rx(rx_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001789
1790 /* some network statistics */
1791 if ((rx_status & BCAST) == MCAST)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001792 net_dev->stats.multicast++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001793 net_dev->last_rx = jiffies;
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001794 net_dev->stats.rx_bytes += rx_size;
1795 net_dev->stats.rx_packets++;
Neil Hormanb748d9e2007-04-20 09:54:58 -04001796 sis_priv->dirty_rx++;
1797refill_rx_ring:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001798 sis_priv->rx_skbuff[entry] = skb;
1799 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001800 sis_priv->rx_ring[entry].bufptr =
1801 pci_map_single(sis_priv->pci_dev, skb->data,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001802 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001803 }
1804 sis_priv->cur_rx++;
1805 entry = sis_priv->cur_rx % NUM_RX_DESC;
1806 rx_status = sis_priv->rx_ring[entry].cmdsts;
1807 } // while
1808
1809 /* refill the Rx buffer, what if the rate of refilling is slower
1810 * than consuming ?? */
Vasily Averin7380a78a2005-10-28 16:46:35 -04001811 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001812 struct sk_buff *skb;
1813
1814 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1815
1816 if (sis_priv->rx_skbuff[entry] == NULL) {
1817 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1818 /* not enough memory for skbuff, this makes a
1819 * "hole" on the buffer ring, it is not clear
1820 * how the hardware will react to this kind
1821 * of degenerated buffer */
1822 if (netif_msg_rx_err(sis_priv))
Joe Perches24500222007-11-19 17:48:28 -08001823 printk(KERN_INFO "%s: Memory squeeze, "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001824 "deferring packet.\n",
1825 net_dev->name);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001826 net_dev->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001827 break;
1828 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001829 sis_priv->rx_skbuff[entry] = skb;
1830 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1831 sis_priv->rx_ring[entry].bufptr =
David S. Miller689be432005-06-28 15:25:31 -07001832 pci_map_single(sis_priv->pci_dev, skb->data,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001833 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1834 }
1835 }
1836 /* re-enable the potentially idle receive state matchine */
1837 outl(RxENA | inl(ioaddr + cr), ioaddr + cr );
1838
1839 return 0;
1840}
1841
1842/**
1843 * sis900_finish_xmit - finish up transmission of packets
1844 * @net_dev: the net device to be transmitted on
1845 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001846 * Check for error condition and free socket buffer etc
Linus Torvalds1da177e2005-04-16 15:20:36 -07001847 * schedule for more transmission as needed
Akinobu Mita0b280022006-03-26 01:38:58 -08001848 * Note: This function is called by interrupt handler,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001849 * don't do "too much" work here
1850 */
1851
1852static void sis900_finish_xmit (struct net_device *net_dev)
1853{
1854 struct sis900_private *sis_priv = net_dev->priv;
1855
1856 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1857 struct sk_buff *skb;
1858 unsigned int entry;
1859 u32 tx_status;
1860
1861 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1862 tx_status = sis_priv->tx_ring[entry].cmdsts;
1863
1864 if (tx_status & OWN) {
1865 /* The packet is not transmitted yet (owned by hardware) !
1866 * Note: the interrupt is generated only when Tx Machine
1867 * is idle, so this is an almost impossible case */
1868 break;
1869 }
1870
1871 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1872 /* packet unsuccessfully transmitted */
1873 if (netif_msg_tx_err(sis_priv))
1874 printk(KERN_DEBUG "%s: Transmit "
1875 "error, Tx status %8.8x.\n",
1876 net_dev->name, tx_status);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001877 net_dev->stats.tx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001878 if (tx_status & UNDERRUN)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001879 net_dev->stats.tx_fifo_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001880 if (tx_status & ABORT)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001881 net_dev->stats.tx_aborted_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001882 if (tx_status & NOCARRIER)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001883 net_dev->stats.tx_carrier_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001884 if (tx_status & OWCOLL)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001885 net_dev->stats.tx_window_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001886 } else {
1887 /* packet successfully transmitted */
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001888 net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
1889 net_dev->stats.tx_bytes += tx_status & DSIZE;
1890 net_dev->stats.tx_packets++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001891 }
1892 /* Free the original skb. */
1893 skb = sis_priv->tx_skbuff[entry];
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001894 pci_unmap_single(sis_priv->pci_dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001895 sis_priv->tx_ring[entry].bufptr, skb->len,
1896 PCI_DMA_TODEVICE);
1897 dev_kfree_skb_irq(skb);
1898 sis_priv->tx_skbuff[entry] = NULL;
1899 sis_priv->tx_ring[entry].bufptr = 0;
1900 sis_priv->tx_ring[entry].cmdsts = 0;
1901 }
1902
1903 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1904 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1905 /* The ring is no longer full, clear tx_full and schedule
1906 * more transmission by netif_wake_queue(net_dev) */
1907 sis_priv->tx_full = 0;
1908 netif_wake_queue (net_dev);
1909 }
1910}
1911
1912/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001913 * sis900_close - close sis900 device
Linus Torvalds1da177e2005-04-16 15:20:36 -07001914 * @net_dev: the net device to be closed
1915 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001916 * Disable interrupts, stop the Tx and Rx Status Machine
Linus Torvalds1da177e2005-04-16 15:20:36 -07001917 * free Tx and RX socket buffer
1918 */
1919
1920static int sis900_close(struct net_device *net_dev)
1921{
1922 long ioaddr = net_dev->base_addr;
1923 struct sis900_private *sis_priv = net_dev->priv;
1924 struct sk_buff *skb;
1925 int i;
1926
1927 netif_stop_queue(net_dev);
1928
1929 /* Disable interrupts by clearing the interrupt mask. */
1930 outl(0x0000, ioaddr + imr);
1931 outl(0x0000, ioaddr + ier);
1932
1933 /* Stop the chip's Tx and Rx Status Machine */
1934 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
1935
1936 del_timer(&sis_priv->timer);
1937
1938 free_irq(net_dev->irq, net_dev);
1939
1940 /* Free Tx and RX skbuff */
1941 for (i = 0; i < NUM_RX_DESC; i++) {
1942 skb = sis_priv->rx_skbuff[i];
1943 if (skb) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001944 pci_unmap_single(sis_priv->pci_dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001945 sis_priv->rx_ring[i].bufptr,
1946 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1947 dev_kfree_skb(skb);
1948 sis_priv->rx_skbuff[i] = NULL;
1949 }
1950 }
1951 for (i = 0; i < NUM_TX_DESC; i++) {
1952 skb = sis_priv->tx_skbuff[i];
1953 if (skb) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001954 pci_unmap_single(sis_priv->pci_dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001955 sis_priv->tx_ring[i].bufptr, skb->len,
1956 PCI_DMA_TODEVICE);
1957 dev_kfree_skb(skb);
1958 sis_priv->tx_skbuff[i] = NULL;
1959 }
1960 }
1961
1962 /* Green! Put the chip in low-power mode. */
1963
1964 return 0;
1965}
1966
1967/**
1968 * sis900_get_drvinfo - Return information about driver
1969 * @net_dev: the net device to probe
1970 * @info: container for info returned
1971 *
1972 * Process ethtool command such as "ehtool -i" to show information
1973 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001974
Linus Torvalds1da177e2005-04-16 15:20:36 -07001975static void sis900_get_drvinfo(struct net_device *net_dev,
1976 struct ethtool_drvinfo *info)
1977{
1978 struct sis900_private *sis_priv = net_dev->priv;
1979
1980 strcpy (info->driver, SIS900_MODULE_NAME);
1981 strcpy (info->version, SIS900_DRV_VERSION);
1982 strcpy (info->bus_info, pci_name(sis_priv->pci_dev));
1983}
1984
1985static u32 sis900_get_msglevel(struct net_device *net_dev)
1986{
1987 struct sis900_private *sis_priv = net_dev->priv;
1988 return sis_priv->msg_enable;
1989}
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001990
Linus Torvalds1da177e2005-04-16 15:20:36 -07001991static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
1992{
1993 struct sis900_private *sis_priv = net_dev->priv;
1994 sis_priv->msg_enable = value;
1995}
1996
Daniele Venzanoda369b02005-05-12 20:13:14 -04001997static u32 sis900_get_link(struct net_device *net_dev)
1998{
1999 struct sis900_private *sis_priv = net_dev->priv;
2000 return mii_link_ok(&sis_priv->mii_info);
2001}
2002
2003static int sis900_get_settings(struct net_device *net_dev,
2004 struct ethtool_cmd *cmd)
2005{
2006 struct sis900_private *sis_priv = net_dev->priv;
2007 spin_lock_irq(&sis_priv->lock);
2008 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2009 spin_unlock_irq(&sis_priv->lock);
2010 return 0;
2011}
2012
2013static int sis900_set_settings(struct net_device *net_dev,
2014 struct ethtool_cmd *cmd)
2015{
2016 struct sis900_private *sis_priv = net_dev->priv;
2017 int rt;
2018 spin_lock_irq(&sis_priv->lock);
2019 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2020 spin_unlock_irq(&sis_priv->lock);
2021 return rt;
2022}
2023
2024static int sis900_nway_reset(struct net_device *net_dev)
2025{
2026 struct sis900_private *sis_priv = net_dev->priv;
2027 return mii_nway_restart(&sis_priv->mii_info);
2028}
2029
Daniele Venzanoea37cce2005-10-11 09:44:30 +02002030/**
2031 * sis900_set_wol - Set up Wake on Lan registers
2032 * @net_dev: the net device to probe
2033 * @wol: container for info passed to the driver
2034 *
2035 * Process ethtool command "wol" to setup wake on lan features.
2036 * SiS900 supports sending WoL events if a correct packet is received,
2037 * but there is no simple way to filter them to only a subset (broadcast,
2038 * multicast, unicast or arp).
2039 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002040
Daniele Venzanoea37cce2005-10-11 09:44:30 +02002041static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2042{
2043 struct sis900_private *sis_priv = net_dev->priv;
2044 long pmctrl_addr = net_dev->base_addr + pmctrl;
2045 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2046
2047 if (wol->wolopts == 0) {
2048 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
Daniele Venzano7bef4b32006-02-25 17:01:09 -05002049 cfgpmcsr &= ~PME_EN;
Daniele Venzanoea37cce2005-10-11 09:44:30 +02002050 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2051 outl(pmctrl_bits, pmctrl_addr);
2052 if (netif_msg_wol(sis_priv))
2053 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2054 return 0;
2055 }
2056
2057 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2058 | WAKE_BCAST | WAKE_ARP))
2059 return -EINVAL;
2060
2061 if (wol->wolopts & WAKE_MAGIC)
2062 pmctrl_bits |= MAGICPKT;
2063 if (wol->wolopts & WAKE_PHY)
2064 pmctrl_bits |= LINKON;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002065
Daniele Venzanoea37cce2005-10-11 09:44:30 +02002066 outl(pmctrl_bits, pmctrl_addr);
2067
2068 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2069 cfgpmcsr |= PME_EN;
2070 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2071 if (netif_msg_wol(sis_priv))
2072 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2073
2074 return 0;
2075}
2076
2077static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2078{
2079 long pmctrl_addr = net_dev->base_addr + pmctrl;
2080 u32 pmctrl_bits;
2081
2082 pmctrl_bits = inl(pmctrl_addr);
2083 if (pmctrl_bits & MAGICPKT)
2084 wol->wolopts |= WAKE_MAGIC;
2085 if (pmctrl_bits & LINKON)
2086 wol->wolopts |= WAKE_PHY;
2087
2088 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2089}
2090
Jeff Garzik7282d492006-09-13 14:30:00 -04002091static const struct ethtool_ops sis900_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002092 .get_drvinfo = sis900_get_drvinfo,
2093 .get_msglevel = sis900_get_msglevel,
2094 .set_msglevel = sis900_set_msglevel,
Daniele Venzanoda369b02005-05-12 20:13:14 -04002095 .get_link = sis900_get_link,
2096 .get_settings = sis900_get_settings,
2097 .set_settings = sis900_set_settings,
2098 .nway_reset = sis900_nway_reset,
Daniele Venzanoea37cce2005-10-11 09:44:30 +02002099 .get_wol = sis900_get_wol,
2100 .set_wol = sis900_set_wol
Linus Torvalds1da177e2005-04-16 15:20:36 -07002101};
2102
2103/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002104 * mii_ioctl - process MII i/o control command
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105 * @net_dev: the net device to command for
2106 * @rq: parameter for command
2107 * @cmd: the i/o command
2108 *
2109 * Process MII command like read/write MII register
2110 */
2111
2112static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2113{
2114 struct sis900_private *sis_priv = net_dev->priv;
2115 struct mii_ioctl_data *data = if_mii(rq);
2116
2117 switch(cmd) {
2118 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2119 data->phy_id = sis_priv->mii->phy_addr;
2120 /* Fall Through */
2121
2122 case SIOCGMIIREG: /* Read MII PHY register. */
2123 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2124 return 0;
2125
2126 case SIOCSMIIREG: /* Write MII PHY register. */
2127 if (!capable(CAP_NET_ADMIN))
2128 return -EPERM;
2129 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2130 return 0;
2131 default:
2132 return -EOPNOTSUPP;
2133 }
2134}
2135
2136/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002137 * sis900_set_config - Set media type by net_device.set_config
Linus Torvalds1da177e2005-04-16 15:20:36 -07002138 * @dev: the net device for media type change
2139 * @map: ifmap passed by ifconfig
2140 *
2141 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2142 * we support only port changes. All other runtime configuration
2143 * changes will be ignored
2144 */
2145
2146static int sis900_set_config(struct net_device *dev, struct ifmap *map)
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002147{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002148 struct sis900_private *sis_priv = dev->priv;
2149 struct mii_phy *mii_phy = sis_priv->mii;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002150
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151 u16 status;
2152
2153 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2154 /* we switch on the ifmap->port field. I couldn't find anything
2155 * like a definition or standard for the values of that field.
2156 * I think the meaning of those values is device specific. But
2157 * since I would like to change the media type via the ifconfig
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002158 * command I use the definition from linux/netdevice.h
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159 * (which seems to be different from the ifport(pcmcia) definition) */
2160 switch(map->port){
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002161 case IF_PORT_UNKNOWN: /* use auto here */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002162 dev->if_port = map->port;
2163 /* we are going to change the media type, so the Link
2164 * will be temporary down and we need to reflect that
2165 * here. When the Link comes up again, it will be
2166 * sensed by the sis_timer procedure, which also does
2167 * all the rest for us */
2168 netif_carrier_off(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002169
Linus Torvalds1da177e2005-04-16 15:20:36 -07002170 /* read current state */
2171 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002172
Linus Torvalds1da177e2005-04-16 15:20:36 -07002173 /* enable auto negotiation and reset the negotioation
2174 * (I don't really know what the auto negatiotiation
2175 * reset really means, but it sounds for me right to
2176 * do one here) */
2177 mdio_write(dev, mii_phy->phy_addr,
2178 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2179
2180 break;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002181
2182 case IF_PORT_10BASET: /* 10BaseT */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002183 dev->if_port = map->port;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002184
Linus Torvalds1da177e2005-04-16 15:20:36 -07002185 /* we are going to change the media type, so the Link
2186 * will be temporary down and we need to reflect that
2187 * here. When the Link comes up again, it will be
2188 * sensed by the sis_timer procedure, which also does
2189 * all the rest for us */
2190 netif_carrier_off(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002191
Linus Torvalds1da177e2005-04-16 15:20:36 -07002192 /* set Speed to 10Mbps */
2193 /* read current state */
2194 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002195
Linus Torvalds1da177e2005-04-16 15:20:36 -07002196 /* disable auto negotiation and force 10MBit mode*/
2197 mdio_write(dev, mii_phy->phy_addr,
2198 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2199 MII_CNTL_AUTO));
2200 break;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002201
Linus Torvalds1da177e2005-04-16 15:20:36 -07002202 case IF_PORT_100BASET: /* 100BaseT */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002203 case IF_PORT_100BASETX: /* 100BaseTx */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002204 dev->if_port = map->port;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002205
Linus Torvalds1da177e2005-04-16 15:20:36 -07002206 /* we are going to change the media type, so the Link
2207 * will be temporary down and we need to reflect that
2208 * here. When the Link comes up again, it will be
2209 * sensed by the sis_timer procedure, which also does
2210 * all the rest for us */
2211 netif_carrier_off(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002212
Linus Torvalds1da177e2005-04-16 15:20:36 -07002213 /* set Speed to 100Mbps */
2214 /* disable auto negotiation and enable 100MBit Mode */
2215 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2216 mdio_write(dev, mii_phy->phy_addr,
2217 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2218 MII_CNTL_SPEED);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002219
Linus Torvalds1da177e2005-04-16 15:20:36 -07002220 break;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002221
Linus Torvalds1da177e2005-04-16 15:20:36 -07002222 case IF_PORT_10BASE2: /* 10Base2 */
2223 case IF_PORT_AUI: /* AUI */
2224 case IF_PORT_100BASEFX: /* 100BaseFx */
2225 /* These Modes are not supported (are they?)*/
2226 return -EOPNOTSUPP;
2227 break;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002228
Linus Torvalds1da177e2005-04-16 15:20:36 -07002229 default:
2230 return -EINVAL;
2231 }
2232 }
2233 return 0;
2234}
2235
2236/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002237 * sis900_mcast_bitnr - compute hashtable index
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238 * @addr: multicast address
2239 * @revision: revision id of chip
2240 *
2241 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2242 * hash table, which makes this function a little bit different from other drivers
2243 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002244 * multicast hash table.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002245 */
2246
2247static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2248{
2249
2250 u32 crc = ether_crc(6, addr);
2251
2252 /* leave 8 or 7 most siginifant bits */
2253 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2254 return ((int)(crc >> 24));
2255 else
2256 return ((int)(crc >> 25));
2257}
2258
2259/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002260 * set_rx_mode - Set SiS900 receive mode
Linus Torvalds1da177e2005-04-16 15:20:36 -07002261 * @net_dev: the net device to be set
2262 *
2263 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2264 * And set the appropriate multicast filter.
2265 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2266 */
2267
2268static void set_rx_mode(struct net_device *net_dev)
2269{
2270 long ioaddr = net_dev->base_addr;
2271 struct sis900_private * sis_priv = net_dev->priv;
2272 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2273 int i, table_entries;
2274 u32 rx_mode;
2275
Alexey Dobriyan7f927fc2006-03-28 01:56:53 -08002276 /* 635 Hash Table entries = 256(2^16) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002277 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2278 (sis_priv->chipset_rev == SIS900B_900_REV))
2279 table_entries = 16;
2280 else
2281 table_entries = 8;
2282
2283 if (net_dev->flags & IFF_PROMISC) {
2284 /* Accept any kinds of packets */
2285 rx_mode = RFPromiscuous;
2286 for (i = 0; i < table_entries; i++)
2287 mc_filter[i] = 0xffff;
2288 } else if ((net_dev->mc_count > multicast_filter_limit) ||
2289 (net_dev->flags & IFF_ALLMULTI)) {
2290 /* too many multicast addresses or accept all multicast packet */
2291 rx_mode = RFAAB | RFAAM;
2292 for (i = 0; i < table_entries; i++)
2293 mc_filter[i] = 0xffff;
2294 } else {
2295 /* Accept Broadcast packet, destination address matchs our
2296 * MAC address, use Receive Filter to reject unwanted MCAST
2297 * packets */
2298 struct dev_mc_list *mclist;
2299 rx_mode = RFAAB;
2300 for (i = 0, mclist = net_dev->mc_list;
2301 mclist && i < net_dev->mc_count;
2302 i++, mclist = mclist->next) {
2303 unsigned int bit_nr =
2304 sis900_mcast_bitnr(mclist->dmi_addr, sis_priv->chipset_rev);
2305 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2306 }
2307 }
2308
2309 /* update Multicast Hash Table in Receive Filter */
2310 for (i = 0; i < table_entries; i++) {
2311 /* why plus 0x04 ??, That makes the correct value for hash table. */
2312 outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr);
2313 outl(mc_filter[i], ioaddr + rfdr);
2314 }
2315
2316 outl(RFEN | rx_mode, ioaddr + rfcr);
2317
2318 /* sis900 is capable of looping back packets at MAC level for
2319 * debugging purpose */
2320 if (net_dev->flags & IFF_LOOPBACK) {
2321 u32 cr_saved;
2322 /* We must disable Tx/Rx before setting loopback mode */
2323 cr_saved = inl(ioaddr + cr);
2324 outl(cr_saved | TxDIS | RxDIS, ioaddr + cr);
2325 /* enable loopback */
2326 outl(inl(ioaddr + txcfg) | TxMLB, ioaddr + txcfg);
2327 outl(inl(ioaddr + rxcfg) | RxATX, ioaddr + rxcfg);
2328 /* restore cr */
2329 outl(cr_saved, ioaddr + cr);
2330 }
2331
2332 return;
2333}
2334
2335/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002336 * sis900_reset - Reset sis900 MAC
Linus Torvalds1da177e2005-04-16 15:20:36 -07002337 * @net_dev: the net device to reset
2338 *
2339 * reset sis900 MAC and wait until finished
2340 * reset through command register
2341 * change backoff algorithm for 900B0 & 635 M/B
2342 */
2343
2344static void sis900_reset(struct net_device *net_dev)
2345{
2346 struct sis900_private * sis_priv = net_dev->priv;
2347 long ioaddr = net_dev->base_addr;
2348 int i = 0;
2349 u32 status = TxRCMP | RxRCMP;
2350
2351 outl(0, ioaddr + ier);
2352 outl(0, ioaddr + imr);
2353 outl(0, ioaddr + rfcr);
2354
2355 outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002356
Linus Torvalds1da177e2005-04-16 15:20:36 -07002357 /* Check that the chip has finished the reset. */
2358 while (status && (i++ < 1000)) {
2359 status ^= (inl(isr + ioaddr) & status);
2360 }
2361
2362 if( (sis_priv->chipset_rev >= SIS635A_900_REV) ||
2363 (sis_priv->chipset_rev == SIS900B_900_REV) )
2364 outl(PESEL | RND_CNT, ioaddr + cfg);
2365 else
2366 outl(PESEL, ioaddr + cfg);
2367}
2368
2369/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002370 * sis900_remove - Remove sis900 device
Linus Torvalds1da177e2005-04-16 15:20:36 -07002371 * @pci_dev: the pci device to be removed
2372 *
2373 * remove and release SiS900 net device
2374 */
2375
2376static void __devexit sis900_remove(struct pci_dev *pci_dev)
2377{
2378 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2379 struct sis900_private * sis_priv = net_dev->priv;
2380 struct mii_phy *phy = NULL;
2381
2382 while (sis_priv->first_mii) {
2383 phy = sis_priv->first_mii;
2384 sis_priv->first_mii = phy->next;
2385 kfree(phy);
2386 }
2387
2388 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2389 sis_priv->rx_ring_dma);
2390 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2391 sis_priv->tx_ring_dma);
2392 unregister_netdev(net_dev);
2393 free_netdev(net_dev);
2394 pci_release_regions(pci_dev);
2395 pci_set_drvdata(pci_dev, NULL);
2396}
2397
2398#ifdef CONFIG_PM
2399
2400static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2401{
2402 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2403 long ioaddr = net_dev->base_addr;
2404
2405 if(!netif_running(net_dev))
2406 return 0;
2407
2408 netif_stop_queue(net_dev);
2409 netif_device_detach(net_dev);
2410
2411 /* Stop the chip's Tx and Rx Status Machine */
2412 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
2413
2414 pci_set_power_state(pci_dev, PCI_D3hot);
2415 pci_save_state(pci_dev);
2416
2417 return 0;
2418}
2419
2420static int sis900_resume(struct pci_dev *pci_dev)
2421{
2422 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2423 struct sis900_private *sis_priv = net_dev->priv;
2424 long ioaddr = net_dev->base_addr;
2425
2426 if(!netif_running(net_dev))
2427 return 0;
2428 pci_restore_state(pci_dev);
2429 pci_set_power_state(pci_dev, PCI_D0);
2430
2431 sis900_init_rxfilter(net_dev);
2432
2433 sis900_init_tx_ring(net_dev);
2434 sis900_init_rx_ring(net_dev);
2435
2436 set_rx_mode(net_dev);
2437
2438 netif_device_attach(net_dev);
2439 netif_start_queue(net_dev);
2440
2441 /* Workaround for EDB */
2442 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2443
2444 /* Enable all known interrupts by setting the interrupt mask. */
2445 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
2446 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
2447 outl(IE, ioaddr + ier);
2448
2449 sis900_check_mode(net_dev, sis_priv->mii);
2450
2451 return 0;
2452}
2453#endif /* CONFIG_PM */
2454
2455static struct pci_driver sis900_pci_driver = {
2456 .name = SIS900_MODULE_NAME,
2457 .id_table = sis900_pci_tbl,
2458 .probe = sis900_probe,
2459 .remove = __devexit_p(sis900_remove),
2460#ifdef CONFIG_PM
2461 .suspend = sis900_suspend,
2462 .resume = sis900_resume,
2463#endif /* CONFIG_PM */
2464};
2465
2466static int __init sis900_init_module(void)
2467{
2468/* when a module, this is printed whether or not devices are found in probe */
2469#ifdef MODULE
2470 printk(version);
2471#endif
2472
Jeff Garzik29917622006-08-19 17:48:59 -04002473 return pci_register_driver(&sis900_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002474}
2475
2476static void __exit sis900_cleanup_module(void)
2477{
2478 pci_unregister_driver(&sis900_pci_driver);
2479}
2480
2481module_init(sis900_init_module);
2482module_exit(sis900_cleanup_module);
2483