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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
Stephen Hemminger09ab9e72008-11-21 17:34:32 -0800384static const struct net_device_ops sis900_netdev_ops = {
385 .ndo_open = sis900_open,
386 .ndo_stop = sis900_close,
387 .ndo_start_xmit = sis900_start_xmit,
388 .ndo_set_config = sis900_set_config,
389 .ndo_set_multicast_list = set_rx_mode,
390 .ndo_change_mtu = eth_change_mtu,
391 .ndo_validate_addr = eth_validate_addr,
392 .ndo_do_ioctl = mii_ioctl,
393 .ndo_tx_timeout = sis900_tx_timeout,
394#ifdef CONFIG_NET_POLL_CONTROLLER
395 .ndo_poll_controller = sis900_poll,
396#endif
397};
398
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399/**
400 * sis900_probe - Probe for sis900 device
401 * @pci_dev: the sis900 pci device
402 * @pci_id: the pci device ID
403 *
404 * Check and probe sis900 net device for @pci_dev.
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400405 * Get mac address according to the chip revision,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 * and assign SiS900-specific entries in the device structure.
407 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
408 */
409
410static int __devinit sis900_probe(struct pci_dev *pci_dev,
411 const struct pci_device_id *pci_id)
412{
413 struct sis900_private *sis_priv;
414 struct net_device *net_dev;
415 struct pci_dev *dev;
416 dma_addr_t ring_dma;
417 void *ring_space;
418 long ioaddr;
419 int i, ret;
Arjan van de Venf71e1302006-03-03 21:33:57 -0500420 const char *card_name = card_names[pci_id->driver_data];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 const char *dev_name = pci_name(pci_dev);
422
423/* when built into the kernel, we only print version if device is found */
424#ifndef MODULE
425 static int printed_version;
426 if (!printed_version++)
427 printk(version);
428#endif
429
430 /* setup various bits in PCI command register */
431 ret = pci_enable_device(pci_dev);
432 if(ret) return ret;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400433
Tobias Klauser12b279f2005-04-04 18:10:18 +0200434 i = pci_set_dma_mask(pci_dev, DMA_32BIT_MASK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 if(i){
Joe Perches24500222007-11-19 17:48:28 -0800436 printk(KERN_ERR "sis900.c: architecture does not support "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 "32bit PCI busmaster DMA\n");
438 return i;
439 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400440
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 pci_set_master(pci_dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400442
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 net_dev = alloc_etherdev(sizeof(struct sis900_private));
444 if (!net_dev)
445 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
447
448 /* We do a request_region() to register /proc/ioports info. */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400449 ioaddr = pci_resource_start(pci_dev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 ret = pci_request_regions(pci_dev, "sis900");
451 if (ret)
452 goto err_out;
453
Wang Chen8f15ea42008-11-12 23:38:36 -0800454 sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 net_dev->base_addr = ioaddr;
456 net_dev->irq = pci_dev->irq;
457 sis_priv->pci_dev = pci_dev;
458 spin_lock_init(&sis_priv->lock);
459
460 pci_set_drvdata(pci_dev, net_dev);
461
462 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
463 if (!ring_space) {
464 ret = -ENOMEM;
465 goto err_out_cleardev;
466 }
467 sis_priv->tx_ring = (BufferDesc *)ring_space;
468 sis_priv->tx_ring_dma = ring_dma;
469
470 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
471 if (!ring_space) {
472 ret = -ENOMEM;
473 goto err_unmap_tx;
474 }
475 sis_priv->rx_ring = (BufferDesc *)ring_space;
476 sis_priv->rx_ring_dma = ring_dma;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400477
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 /* The SiS900-specific entries in the device structure. */
Stephen Hemminger09ab9e72008-11-21 17:34:32 -0800479 net_dev->netdev_ops = &sis900_netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480 net_dev->watchdog_timeo = TX_TIMEOUT;
481 net_dev->ethtool_ops = &sis900_ethtool_ops;
482
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 if (sis900_debug > 0)
484 sis_priv->msg_enable = sis900_debug;
485 else
486 sis_priv->msg_enable = SIS900_DEF_MSG;
Daniele Venzanoda369b02005-05-12 20:13:14 -0400487
488 sis_priv->mii_info.dev = net_dev;
489 sis_priv->mii_info.mdio_read = mdio_read;
490 sis_priv->mii_info.mdio_write = mdio_write;
491 sis_priv->mii_info.phy_id_mask = 0x1f;
492 sis_priv->mii_info.reg_num_mask = 0x1f;
493
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494 /* Get Mac address according to the chip revision */
495 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &(sis_priv->chipset_rev));
496 if(netif_msg_probe(sis_priv))
497 printk(KERN_DEBUG "%s: detected revision %2.2x, "
498 "trying to get MAC address...\n",
499 dev_name, sis_priv->chipset_rev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400500
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 ret = 0;
502 if (sis_priv->chipset_rev == SIS630E_900_REV)
503 ret = sis630e_get_mac_addr(pci_dev, net_dev);
504 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
505 ret = sis635_get_mac_addr(pci_dev, net_dev);
506 else if (sis_priv->chipset_rev == SIS96x_900_REV)
507 ret = sis96x_get_mac_addr(pci_dev, net_dev);
508 else
509 ret = sis900_get_mac_addr(pci_dev, net_dev);
510
511 if (ret == 0) {
512 printk(KERN_WARNING "%s: Cannot read MAC address.\n", dev_name);
513 ret = -ENODEV;
514 goto err_unmap_rx;
515 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400516
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517 /* 630ET : set the mii access mode as software-mode */
518 if (sis_priv->chipset_rev == SIS630ET_900_REV)
519 outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
520
521 /* probe for mii transceiver */
522 if (sis900_mii_probe(net_dev) == 0) {
523 printk(KERN_WARNING "%s: Error probing MII device.\n",
524 dev_name);
525 ret = -ENODEV;
526 goto err_unmap_rx;
527 }
528
529 /* save our host bridge revision */
530 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
531 if (dev) {
532 pci_read_config_byte(dev, PCI_CLASS_REVISION, &sis_priv->host_bridge_rev);
533 pci_dev_put(dev);
534 }
535
536 ret = register_netdev(net_dev);
537 if (ret)
538 goto err_unmap_rx;
539
540 /* print some information about our NIC */
Johannes Berge1749612008-10-27 15:59:26 -0700541 printk(KERN_INFO "%s: %s at %#lx, IRQ %d, %pM\n",
Joe Perches0795af52007-10-03 17:59:30 -0700542 net_dev->name, card_name, ioaddr, net_dev->irq,
Johannes Berge1749612008-10-27 15:59:26 -0700543 net_dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544
Daniele Venzanoea37cce2005-10-11 09:44:30 +0200545 /* Detect Wake on Lan support */
Daniele Venzano7bef4b32006-02-25 17:01:09 -0500546 ret = (inl(net_dev->base_addr + CFGPMC) & PMESP) >> 27;
Daniele Venzanoea37cce2005-10-11 09:44:30 +0200547 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
548 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
549
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 return 0;
551
552 err_unmap_rx:
553 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
554 sis_priv->rx_ring_dma);
555 err_unmap_tx:
556 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
557 sis_priv->tx_ring_dma);
558 err_out_cleardev:
559 pci_set_drvdata(pci_dev, NULL);
560 pci_release_regions(pci_dev);
561 err_out:
562 free_netdev(net_dev);
563 return ret;
564}
565
566/**
567 * sis900_mii_probe - Probe MII PHY for sis900
568 * @net_dev: the net device to probe for
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400569 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570 * Search for total of 32 possible mii phy addresses.
571 * Identify and set current phy if found one,
572 * return error if it failed to found.
573 */
574
Adrian Bunk4e50a8e2007-07-10 14:44:35 +0200575static int __devinit sis900_mii_probe(struct net_device * net_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576{
Wang Chen8f15ea42008-11-12 23:38:36 -0800577 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 const char *dev_name = pci_name(sis_priv->pci_dev);
579 u16 poll_bit = MII_STAT_LINK, status = 0;
580 unsigned long timeout = jiffies + 5 * HZ;
581 int phy_addr;
582
583 sis_priv->mii = NULL;
584
585 /* search for total of 32 possible mii phy addresses */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400586 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 struct mii_phy * mii_phy = NULL;
588 u16 mii_status;
589 int i;
590
591 mii_phy = NULL;
592 for(i = 0; i < 2; i++)
593 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
594
595 if (mii_status == 0xffff || mii_status == 0x0000) {
596 if (netif_msg_probe(sis_priv))
597 printk(KERN_DEBUG "%s: MII at address %d"
598 " not accessible\n",
599 dev_name, phy_addr);
600 continue;
601 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400602
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
604 printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n");
605 mii_phy = sis_priv->first_mii;
606 while (mii_phy) {
607 struct mii_phy *phy;
608 phy = mii_phy;
609 mii_phy = mii_phy->next;
610 kfree(phy);
611 }
612 return 0;
613 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400614
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400616 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 mii_phy->phy_addr = phy_addr;
618 mii_phy->status = mii_status;
619 mii_phy->next = sis_priv->mii;
620 sis_priv->mii = mii_phy;
621 sis_priv->first_mii = mii_phy;
622
623 for (i = 0; mii_chip_table[i].phy_id1; i++)
624 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
625 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
626 mii_phy->phy_types = mii_chip_table[i].phy_types;
627 if (mii_chip_table[i].phy_types == MIX)
628 mii_phy->phy_types =
629 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
630 printk(KERN_INFO "%s: %s transceiver found "
631 "at address %d.\n",
632 dev_name,
633 mii_chip_table[i].name,
634 phy_addr);
635 break;
636 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400637
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 if( !mii_chip_table[i].phy_id1 ) {
639 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
640 dev_name, phy_addr);
641 mii_phy->phy_types = UNKNOWN;
642 }
643 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400644
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645 if (sis_priv->mii == NULL) {
646 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
647 return 0;
648 }
649
650 /* select default PHY for mac */
651 sis_priv->mii = NULL;
652 sis900_default_phy( net_dev );
653
654 /* Reset phy if default phy is internal sis900 */
655 if ((sis_priv->mii->phy_id0 == 0x001D) &&
656 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
657 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400658
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 /* workaround for ICS1893 PHY */
660 if ((sis_priv->mii->phy_id0 == 0x0015) &&
661 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
662 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
663
664 if(status & MII_STAT_LINK){
665 while (poll_bit) {
666 yield();
667
668 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
669 if (time_after_eq(jiffies, timeout)) {
670 printk(KERN_WARNING "%s: reset phy and link down now\n",
671 dev_name);
672 return -ETIME;
673 }
674 }
675 }
676
677 if (sis_priv->chipset_rev == SIS630E_900_REV) {
678 /* SiS 630E has some bugs on default value of PHY registers */
679 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
680 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
681 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
682 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400683 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684 }
685
686 if (sis_priv->mii->status & MII_STAT_LINK)
687 netif_carrier_on(net_dev);
688 else
689 netif_carrier_off(net_dev);
690
691 return 1;
692}
693
694/**
695 * sis900_default_phy - Select default PHY for sis900 mac.
696 * @net_dev: the net device to probe for
697 *
698 * Select first detected PHY with link as default.
699 * If no one is link on, select PHY whose types is HOME as default.
700 * If HOME doesn't exist, select LAN.
701 */
702
703static u16 sis900_default_phy(struct net_device * net_dev)
704{
Wang Chen8f15ea42008-11-12 23:38:36 -0800705 struct sis900_private *sis_priv = netdev_priv(net_dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400706 struct mii_phy *phy = NULL, *phy_home = NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707 *default_phy = NULL, *phy_lan = NULL;
708 u16 status;
709
710 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
711 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
712 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
713
714 /* Link ON & Not select default PHY & not ghost PHY */
715 if ((status & MII_STAT_LINK) && !default_phy &&
716 (phy->phy_types != UNKNOWN))
717 default_phy = phy;
718 else {
719 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
720 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
721 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
722 if (phy->phy_types == HOME)
723 phy_home = phy;
724 else if(phy->phy_types == LAN)
725 phy_lan = phy;
726 }
727 }
728
729 if (!default_phy && phy_home)
730 default_phy = phy_home;
731 else if (!default_phy && phy_lan)
732 default_phy = phy_lan;
733 else if (!default_phy)
734 default_phy = sis_priv->first_mii;
735
736 if (sis_priv->mii != default_phy) {
737 sis_priv->mii = default_phy;
738 sis_priv->cur_phy = default_phy->phy_addr;
739 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
740 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
741 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400742
Daniele Venzanoda369b02005-05-12 20:13:14 -0400743 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
744
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
746 status &= (~MII_CNTL_ISOLATE);
747
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400748 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
750 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
751
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400752 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753}
754
755
756/**
757 * sis900_set_capability - set the media capability of network adapter.
758 * @net_dev : the net device to probe for
759 * @phy : default PHY
760 *
761 * Set the media capability of network adapter according to
762 * mii status register. It's necessary before auto-negotiate.
763 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400764
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
766{
767 u16 cap;
768 u16 status;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400769
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
771 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400772
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 cap = MII_NWAY_CSMA_CD |
774 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
775 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
776 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
777 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
778
779 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
780}
781
782
783/* Delay between EEPROM clock transitions. */
784#define eeprom_delay() inl(ee_addr)
785
786/**
787 * read_eeprom - Read Serial EEPROM
788 * @ioaddr: base i/o address
789 * @location: the EEPROM location to read
790 *
791 * Read Serial EEPROM through EEPROM Access Register.
792 * Note that location is in word (16 bits) unit
793 */
794
795static u16 __devinit read_eeprom(long ioaddr, int location)
796{
797 int i;
798 u16 retval = 0;
799 long ee_addr = ioaddr + mear;
800 u32 read_cmd = location | EEread;
801
802 outl(0, ee_addr);
803 eeprom_delay();
804 outl(EECS, ee_addr);
805 eeprom_delay();
806
807 /* Shift the read command (9) bits out. */
808 for (i = 8; i >= 0; i--) {
809 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
810 outl(dataval, ee_addr);
811 eeprom_delay();
812 outl(dataval | EECLK, ee_addr);
813 eeprom_delay();
814 }
815 outl(EECS, ee_addr);
816 eeprom_delay();
817
818 /* read the 16-bits data in */
819 for (i = 16; i > 0; i--) {
820 outl(EECS, ee_addr);
821 eeprom_delay();
822 outl(EECS | EECLK, ee_addr);
823 eeprom_delay();
824 retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
825 eeprom_delay();
826 }
827
828 /* Terminate the EEPROM access. */
829 outl(0, ee_addr);
830 eeprom_delay();
831
832 return (retval);
833}
834
835/* Read and write the MII management registers using software-generated
836 serial MDIO protocol. Note that the command bits and data bits are
837 send out separately */
838#define mdio_delay() inl(mdio_addr)
839
840static void mdio_idle(long mdio_addr)
841{
842 outl(MDIO | MDDIR, mdio_addr);
843 mdio_delay();
844 outl(MDIO | MDDIR | MDC, mdio_addr);
845}
846
847/* Syncronize the MII management interface by shifting 32 one bits out. */
848static void mdio_reset(long mdio_addr)
849{
850 int i;
851
852 for (i = 31; i >= 0; i--) {
853 outl(MDDIR | MDIO, mdio_addr);
854 mdio_delay();
855 outl(MDDIR | MDIO | MDC, mdio_addr);
856 mdio_delay();
857 }
858 return;
859}
860
861/**
862 * mdio_read - read MII PHY register
863 * @net_dev: the net device to read
864 * @phy_id: the phy address to read
865 * @location: the phy regiester id to read
866 *
867 * Read MII registers through MDIO and MDC
868 * using MDIO management frame structure and protocol(defined by ISO/IEC).
869 * Please see SiS7014 or ICS spec
870 */
871
Daniele Venzanoda369b02005-05-12 20:13:14 -0400872static int mdio_read(struct net_device *net_dev, int phy_id, int location)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873{
874 long mdio_addr = net_dev->base_addr + mear;
875 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
876 u16 retval = 0;
877 int i;
878
879 mdio_reset(mdio_addr);
880 mdio_idle(mdio_addr);
881
882 for (i = 15; i >= 0; i--) {
883 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
884 outl(dataval, mdio_addr);
885 mdio_delay();
886 outl(dataval | MDC, mdio_addr);
887 mdio_delay();
888 }
889
890 /* Read the 16 data bits. */
891 for (i = 16; i > 0; i--) {
892 outl(0, mdio_addr);
893 mdio_delay();
894 retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
895 outl(MDC, mdio_addr);
896 mdio_delay();
897 }
898 outl(0x00, mdio_addr);
899
900 return retval;
901}
902
903/**
904 * mdio_write - write MII PHY register
905 * @net_dev: the net device to write
906 * @phy_id: the phy address to write
907 * @location: the phy regiester id to write
908 * @value: the register value to write with
909 *
910 * Write MII registers with @value through MDIO and MDC
911 * using MDIO management frame structure and protocol(defined by ISO/IEC)
912 * please see SiS7014 or ICS spec
913 */
914
915static void mdio_write(struct net_device *net_dev, int phy_id, int location,
916 int value)
917{
918 long mdio_addr = net_dev->base_addr + mear;
919 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
920 int i;
921
922 mdio_reset(mdio_addr);
923 mdio_idle(mdio_addr);
924
925 /* Shift the command bits out. */
926 for (i = 15; i >= 0; i--) {
927 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
928 outb(dataval, mdio_addr);
929 mdio_delay();
930 outb(dataval | MDC, mdio_addr);
931 mdio_delay();
932 }
933 mdio_delay();
934
935 /* Shift the value bits out. */
936 for (i = 15; i >= 0; i--) {
937 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
938 outl(dataval, mdio_addr);
939 mdio_delay();
940 outl(dataval | MDC, mdio_addr);
941 mdio_delay();
942 }
943 mdio_delay();
944
945 /* Clear out extra bits. */
946 for (i = 2; i > 0; i--) {
947 outb(0, mdio_addr);
948 mdio_delay();
949 outb(MDC, mdio_addr);
950 mdio_delay();
951 }
952 outl(0x00, mdio_addr);
953
954 return;
955}
956
957
958/**
959 * sis900_reset_phy - reset sis900 mii phy.
960 * @net_dev: the net device to write
961 * @phy_addr: default phy address
962 *
963 * Some specific phy can't work properly without reset.
964 * This function will be called during initialization and
965 * link status change from ON to DOWN.
966 */
967
968static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
969{
Andrew Mortonf3be9742007-03-06 02:41:55 -0800970 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971 u16 status;
972
Andrew Mortonf3be9742007-03-06 02:41:55 -0800973 for (i = 0; i < 2; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700974 status = mdio_read(net_dev, phy_addr, MII_STATUS);
975
976 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400977
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978 return status;
979}
980
981#ifdef CONFIG_NET_POLL_CONTROLLER
982/*
983 * Polling 'interrupt' - used by things like netconsole to send skbs
984 * without having to re-enable interrupts. It's not called while
985 * the interrupt routine is executing.
986*/
987static void sis900_poll(struct net_device *dev)
988{
989 disable_irq(dev->irq);
David Howells7d12e782006-10-05 14:55:46 +0100990 sis900_interrupt(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991 enable_irq(dev->irq);
992}
993#endif
994
995/**
996 * sis900_open - open sis900 device
997 * @net_dev: the net device to open
998 *
999 * Do some initialization and start net interface.
1000 * enable interrupts and set sis900 timer.
1001 */
1002
1003static int
1004sis900_open(struct net_device *net_dev)
1005{
Wang Chen8f15ea42008-11-12 23:38:36 -08001006 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007 long ioaddr = net_dev->base_addr;
1008 int ret;
1009
1010 /* Soft reset the chip. */
1011 sis900_reset(net_dev);
1012
1013 /* Equalizer workaround Rule */
1014 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1015
Thomas Gleixner1fb9df52006-07-01 19:29:39 -07001016 ret = request_irq(net_dev->irq, &sis900_interrupt, IRQF_SHARED,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017 net_dev->name, net_dev);
1018 if (ret)
1019 return ret;
1020
1021 sis900_init_rxfilter(net_dev);
1022
1023 sis900_init_tx_ring(net_dev);
1024 sis900_init_rx_ring(net_dev);
1025
1026 set_rx_mode(net_dev);
1027
1028 netif_start_queue(net_dev);
1029
1030 /* Workaround for EDB */
1031 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1032
1033 /* Enable all known interrupts by setting the interrupt mask. */
1034 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1035 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
1036 outl(IE, ioaddr + ier);
1037
1038 sis900_check_mode(net_dev, sis_priv->mii);
1039
1040 /* Set the timer to switch to check for link beat and perhaps switch
1041 to an alternate media type. */
1042 init_timer(&sis_priv->timer);
1043 sis_priv->timer.expires = jiffies + HZ;
1044 sis_priv->timer.data = (unsigned long)net_dev;
1045 sis_priv->timer.function = &sis900_timer;
1046 add_timer(&sis_priv->timer);
1047
1048 return 0;
1049}
1050
1051/**
1052 * sis900_init_rxfilter - Initialize the Rx filter
1053 * @net_dev: the net device to initialize for
1054 *
1055 * Set receive filter address to our MAC address
1056 * and enable packet filtering.
1057 */
1058
1059static void
1060sis900_init_rxfilter (struct net_device * net_dev)
1061{
Wang Chen8f15ea42008-11-12 23:38:36 -08001062 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063 long ioaddr = net_dev->base_addr;
1064 u32 rfcrSave;
1065 u32 i;
1066
1067 rfcrSave = inl(rfcr + ioaddr);
1068
1069 /* disable packet filtering before setting filter */
1070 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
1071
1072 /* load MAC addr to filter data register */
1073 for (i = 0 ; i < 3 ; i++) {
1074 u32 w;
1075
1076 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1077 outl((i << RFADDR_shift), ioaddr + rfcr);
1078 outl(w, ioaddr + rfdr);
1079
1080 if (netif_msg_hw(sis_priv)) {
1081 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1082 net_dev->name, i, inl(ioaddr + rfdr));
1083 }
1084 }
1085
1086 /* enable packet filtering */
1087 outl(rfcrSave | RFEN, rfcr + ioaddr);
1088}
1089
1090/**
1091 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1092 * @net_dev: the net device to initialize for
1093 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001094 * Initialize the Tx descriptor ring,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095 */
1096
1097static void
1098sis900_init_tx_ring(struct net_device *net_dev)
1099{
Wang Chen8f15ea42008-11-12 23:38:36 -08001100 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101 long ioaddr = net_dev->base_addr;
1102 int i;
1103
1104 sis_priv->tx_full = 0;
1105 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1106
1107 for (i = 0; i < NUM_TX_DESC; i++) {
1108 sis_priv->tx_skbuff[i] = NULL;
1109
1110 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1111 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1112 sis_priv->tx_ring[i].cmdsts = 0;
1113 sis_priv->tx_ring[i].bufptr = 0;
1114 }
1115
1116 /* load Transmit Descriptor Register */
1117 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1118 if (netif_msg_hw(sis_priv))
1119 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1120 net_dev->name, inl(ioaddr + txdp));
1121}
1122
1123/**
1124 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1125 * @net_dev: the net device to initialize for
1126 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001127 * Initialize the Rx descriptor ring,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128 * and pre-allocate recevie buffers (socket buffer)
1129 */
1130
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001131static void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001132sis900_init_rx_ring(struct net_device *net_dev)
1133{
Wang Chen8f15ea42008-11-12 23:38:36 -08001134 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135 long ioaddr = net_dev->base_addr;
1136 int i;
1137
1138 sis_priv->cur_rx = 0;
1139 sis_priv->dirty_rx = 0;
1140
1141 /* init RX descriptor */
1142 for (i = 0; i < NUM_RX_DESC; i++) {
1143 sis_priv->rx_skbuff[i] = NULL;
1144
1145 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1146 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1147 sis_priv->rx_ring[i].cmdsts = 0;
1148 sis_priv->rx_ring[i].bufptr = 0;
1149 }
1150
1151 /* allocate sock buffers */
1152 for (i = 0; i < NUM_RX_DESC; i++) {
1153 struct sk_buff *skb;
1154
1155 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1156 /* not enough memory for skbuff, this makes a "hole"
1157 on the buffer ring, it is not clear how the
1158 hardware will react to this kind of degenerated
1159 buffer */
1160 break;
1161 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162 sis_priv->rx_skbuff[i] = skb;
1163 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1164 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
David S. Miller689be432005-06-28 15:25:31 -07001165 skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166 }
1167 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1168
1169 /* load Receive Descriptor Register */
1170 outl(sis_priv->rx_ring_dma, ioaddr + rxdp);
1171 if (netif_msg_hw(sis_priv))
1172 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1173 net_dev->name, inl(ioaddr + rxdp));
1174}
1175
1176/**
1177 * sis630_set_eq - set phy equalizer value for 630 LAN
1178 * @net_dev: the net device to set equalizer value
1179 * @revision: 630 LAN revision number
1180 *
1181 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1182 * PHY register 14h(Test)
1183 * Bit 14: 0 -- Automatically dectect (default)
1184 * 1 -- Manually set Equalizer filter
1185 * Bit 13: 0 -- (Default)
1186 * 1 -- Speed up convergence of equalizer setting
1187 * Bit 9 : 0 -- (Default)
1188 * 1 -- Disable Baseline Wander
1189 * Bit 3~7 -- Equalizer filter setting
1190 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1191 * Then calculate equalizer value
1192 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1193 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1194 * Calculate Equalizer value:
1195 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-dectect proper equalizer value.
1196 * When the equalizer is stable, this value is not a fixed value. It will be within
1197 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1198 * 0 <= max <= 4 --> set equalizer to max
1199 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1200 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1201 */
1202
1203static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1204{
Wang Chen8f15ea42008-11-12 23:38:36 -08001205 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001206 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1207 int i, maxcount=10;
1208
1209 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1210 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1211 return;
1212
1213 if (netif_carrier_ok(net_dev)) {
1214 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1215 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1216 (0x2200 | reg14h) & 0xBFFF);
1217 for (i=0; i < maxcount; i++) {
1218 eq_value = (0x00F8 & mdio_read(net_dev,
1219 sis_priv->cur_phy, MII_RESV)) >> 3;
1220 if (i == 0)
1221 max_value=min_value=eq_value;
1222 max_value = (eq_value > max_value) ?
1223 eq_value : max_value;
1224 min_value = (eq_value < min_value) ?
1225 eq_value : min_value;
1226 }
1227 /* 630E rule to determine the equalizer value */
1228 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1229 revision == SIS630ET_900_REV) {
1230 if (max_value < 5)
1231 eq_value = max_value;
1232 else if (max_value >= 5 && max_value < 15)
1233 eq_value = (max_value == min_value) ?
1234 max_value+2 : max_value+1;
1235 else if (max_value >= 15)
1236 eq_value=(max_value == min_value) ?
1237 max_value+6 : max_value+5;
1238 }
1239 /* 630B0&B1 rule to determine the equalizer value */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001240 if (revision == SIS630A_900_REV &&
1241 (sis_priv->host_bridge_rev == SIS630B0 ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242 sis_priv->host_bridge_rev == SIS630B1)) {
1243 if (max_value == 0)
1244 eq_value = 3;
1245 else
1246 eq_value = (max_value + min_value + 1)/2;
1247 }
1248 /* write equalizer value and setting */
1249 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1250 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1251 reg14h = (reg14h | 0x6000) & 0xFDFF;
1252 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1253 } else {
1254 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001255 if (revision == SIS630A_900_REV &&
1256 (sis_priv->host_bridge_rev == SIS630B0 ||
1257 sis_priv->host_bridge_rev == SIS630B1))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1259 (reg14h | 0x2200) & 0xBFFF);
1260 else
1261 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1262 (reg14h | 0x2000) & 0xBFFF);
1263 }
1264 return;
1265}
1266
1267/**
1268 * sis900_timer - sis900 timer routine
1269 * @data: pointer to sis900 net device
1270 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001271 * On each timer ticks we check two things,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 * link status (ON/OFF) and link mode (10/100/Full/Half)
1273 */
1274
1275static void sis900_timer(unsigned long data)
1276{
1277 struct net_device *net_dev = (struct net_device *)data;
Wang Chen8f15ea42008-11-12 23:38:36 -08001278 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279 struct mii_phy *mii_phy = sis_priv->mii;
Arjan van de Venf71e1302006-03-03 21:33:57 -05001280 static const int next_tick = 5*HZ;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281 u16 status;
1282
1283 if (!sis_priv->autong_complete){
1284 int speed, duplex = 0;
1285
1286 sis900_read_mode(net_dev, &speed, &duplex);
1287 if (duplex){
1288 sis900_set_mode(net_dev->base_addr, speed, duplex);
1289 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1290 netif_start_queue(net_dev);
1291 }
1292
1293 sis_priv->timer.expires = jiffies + HZ;
1294 add_timer(&sis_priv->timer);
1295 return;
1296 }
1297
1298 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1299 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1300
1301 /* Link OFF -> ON */
1302 if (!netif_carrier_ok(net_dev)) {
1303 LookForLink:
1304 /* Search for new PHY */
1305 status = sis900_default_phy(net_dev);
1306 mii_phy = sis_priv->mii;
1307
1308 if (status & MII_STAT_LINK){
1309 sis900_check_mode(net_dev, mii_phy);
1310 netif_carrier_on(net_dev);
1311 }
1312 } else {
1313 /* Link ON -> OFF */
1314 if (!(status & MII_STAT_LINK)){
1315 netif_carrier_off(net_dev);
1316 if(netif_msg_link(sis_priv))
1317 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1318
1319 /* Change mode issue */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001320 if ((mii_phy->phy_id0 == 0x001D) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001321 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1322 sis900_reset_phy(net_dev, sis_priv->cur_phy);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001323
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324 sis630_set_eq(net_dev, sis_priv->chipset_rev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001325
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326 goto LookForLink;
1327 }
1328 }
1329
1330 sis_priv->timer.expires = jiffies + next_tick;
1331 add_timer(&sis_priv->timer);
1332}
1333
1334/**
1335 * sis900_check_mode - check the media mode for sis900
1336 * @net_dev: the net device to be checked
1337 * @mii_phy: the mii phy
1338 *
1339 * Older driver gets the media mode from mii status output
1340 * register. Now we set our media capability and auto-negotiate
1341 * to get the upper bound of speed and duplex between two ends.
1342 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1343 * and autong_complete should be set to 1.
1344 */
1345
1346static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1347{
Wang Chen8f15ea42008-11-12 23:38:36 -08001348 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349 long ioaddr = net_dev->base_addr;
1350 int speed, duplex;
1351
1352 if (mii_phy->phy_types == LAN) {
1353 outl(~EXD & inl(ioaddr + cfg), ioaddr + cfg);
1354 sis900_set_capability(net_dev , mii_phy);
1355 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1356 } else {
1357 outl(EXD | inl(ioaddr + cfg), ioaddr + cfg);
1358 speed = HW_SPEED_HOME;
1359 duplex = FDX_CAPABLE_HALF_SELECTED;
1360 sis900_set_mode(ioaddr, speed, duplex);
1361 sis_priv->autong_complete = 1;
1362 }
1363}
1364
1365/**
1366 * sis900_set_mode - Set the media mode of mac register.
1367 * @ioaddr: the address of the device
1368 * @speed : the transmit speed to be determined
1369 * @duplex: the duplex mode to be determined
1370 *
1371 * Set the media mode of mac register txcfg/rxcfg according to
1372 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1373 * bus is used instead of PCI bus. When this bit is set 1, the
1374 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1375 * double words.
1376 */
1377
1378static void sis900_set_mode (long ioaddr, int speed, int duplex)
1379{
1380 u32 tx_flags = 0, rx_flags = 0;
1381
1382 if (inl(ioaddr + cfg) & EDB_MASTER_EN) {
1383 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1384 (TX_FILL_THRESH << TxFILLT_shift);
1385 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1386 } else {
1387 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1388 (TX_FILL_THRESH << TxFILLT_shift);
1389 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1390 }
1391
1392 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1393 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1394 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1395 } else {
1396 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1397 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1398 }
1399
1400 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1401 tx_flags |= (TxCSI | TxHBI);
1402 rx_flags |= RxATX;
1403 }
1404
Daniele Venzanod269a692006-04-17 10:28:06 +02001405#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1406 /* Can accept Jumbo packet */
1407 rx_flags |= RxAJAB;
1408#endif
1409
Linus Torvalds1da177e2005-04-16 15:20:36 -07001410 outl (tx_flags, ioaddr + txcfg);
1411 outl (rx_flags, ioaddr + rxcfg);
1412}
1413
1414/**
1415 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1416 * @net_dev: the net device to read mode for
1417 * @phy_addr: mii phy address
1418 *
1419 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1420 * autong_complete should be set to 0 when starting auto-negotiation.
1421 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1422 * sis900_timer will wait for link on again if autong_complete = 0.
1423 */
1424
1425static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1426{
Wang Chen8f15ea42008-11-12 23:38:36 -08001427 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428 int i = 0;
1429 u32 status;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001430
Andrew Mortonf3be9742007-03-06 02:41:55 -08001431 for (i = 0; i < 2; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1433
1434 if (!(status & MII_STAT_LINK)){
1435 if(netif_msg_link(sis_priv))
1436 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1437 sis_priv->autong_complete = 1;
1438 netif_carrier_off(net_dev);
1439 return;
1440 }
1441
1442 /* (Re)start AutoNegotiate */
1443 mdio_write(net_dev, phy_addr, MII_CONTROL,
1444 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1445 sis_priv->autong_complete = 0;
1446}
1447
1448
1449/**
1450 * sis900_read_mode - read media mode for sis900 internal phy
1451 * @net_dev: the net device to read mode for
1452 * @speed : the transmit speed to be determined
1453 * @duplex : the duplex mode to be determined
1454 *
1455 * The capability of remote end will be put in mii register autorec
1456 * after auto-negotiation. Use AND operation to get the upper bound
1457 * of speed and duplex between two ends.
1458 */
1459
1460static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1461{
Wang Chen8f15ea42008-11-12 23:38:36 -08001462 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001463 struct mii_phy *phy = sis_priv->mii;
1464 int phy_addr = sis_priv->cur_phy;
1465 u32 status;
1466 u16 autoadv, autorec;
Andrew Mortonf3be9742007-03-06 02:41:55 -08001467 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468
Andrew Mortonf3be9742007-03-06 02:41:55 -08001469 for (i = 0; i < 2; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1471
1472 if (!(status & MII_STAT_LINK))
1473 return;
1474
1475 /* AutoNegotiate completed */
1476 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1477 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1478 status = autoadv & autorec;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001479
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480 *speed = HW_SPEED_10_MBPS;
1481 *duplex = FDX_CAPABLE_HALF_SELECTED;
1482
1483 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1484 *speed = HW_SPEED_100_MBPS;
1485 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1486 *duplex = FDX_CAPABLE_FULL_SELECTED;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001487
Linus Torvalds1da177e2005-04-16 15:20:36 -07001488 sis_priv->autong_complete = 1;
1489
1490 /* Workaround for Realtek RTL8201 PHY issue */
1491 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1492 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1493 *duplex = FDX_CAPABLE_FULL_SELECTED;
1494 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1495 *speed = HW_SPEED_100_MBPS;
1496 }
1497
1498 if(netif_msg_link(sis_priv))
1499 printk(KERN_INFO "%s: Media Link On %s %s-duplex \n",
1500 net_dev->name,
1501 *speed == HW_SPEED_100_MBPS ?
1502 "100mbps" : "10mbps",
1503 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1504 "full" : "half");
1505}
1506
1507/**
1508 * sis900_tx_timeout - sis900 transmit timeout routine
1509 * @net_dev: the net device to transmit
1510 *
1511 * print transmit timeout status
1512 * disable interrupts and do some tasks
1513 */
1514
1515static void sis900_tx_timeout(struct net_device *net_dev)
1516{
Wang Chen8f15ea42008-11-12 23:38:36 -08001517 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001518 long ioaddr = net_dev->base_addr;
1519 unsigned long flags;
1520 int i;
1521
1522 if(netif_msg_tx_err(sis_priv))
1523 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x \n",
1524 net_dev->name, inl(ioaddr + cr), inl(ioaddr + isr));
1525
1526 /* Disable interrupts by clearing the interrupt mask. */
1527 outl(0x0000, ioaddr + imr);
1528
1529 /* use spinlock to prevent interrupt handler accessing buffer ring */
1530 spin_lock_irqsave(&sis_priv->lock, flags);
1531
1532 /* discard unsent packets */
1533 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1534 for (i = 0; i < NUM_TX_DESC; i++) {
1535 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1536
1537 if (skb) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001538 pci_unmap_single(sis_priv->pci_dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001539 sis_priv->tx_ring[i].bufptr, skb->len,
1540 PCI_DMA_TODEVICE);
1541 dev_kfree_skb_irq(skb);
1542 sis_priv->tx_skbuff[i] = NULL;
1543 sis_priv->tx_ring[i].cmdsts = 0;
1544 sis_priv->tx_ring[i].bufptr = 0;
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001545 net_dev->stats.tx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001546 }
1547 }
1548 sis_priv->tx_full = 0;
1549 netif_wake_queue(net_dev);
1550
1551 spin_unlock_irqrestore(&sis_priv->lock, flags);
1552
1553 net_dev->trans_start = jiffies;
1554
1555 /* load Transmit Descriptor Register */
1556 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1557
1558 /* Enable all known interrupts by setting the interrupt mask. */
1559 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1560 return;
1561}
1562
1563/**
1564 * sis900_start_xmit - sis900 start transmit routine
1565 * @skb: socket buffer pointer to put the data being transmitted
1566 * @net_dev: the net device to transmit with
1567 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001568 * Set the transmit buffer descriptor,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001569 * and write TxENA to enable transmit state machine.
1570 * tell upper layer if the buffer is full
1571 */
1572
1573static int
1574sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1575{
Wang Chen8f15ea42008-11-12 23:38:36 -08001576 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001577 long ioaddr = net_dev->base_addr;
1578 unsigned int entry;
1579 unsigned long flags;
1580 unsigned int index_cur_tx, index_dirty_tx;
1581 unsigned int count_dirty_tx;
1582
1583 /* Don't transmit data before the complete of auto-negotiation */
1584 if(!sis_priv->autong_complete){
1585 netif_stop_queue(net_dev);
1586 return 1;
1587 }
1588
1589 spin_lock_irqsave(&sis_priv->lock, flags);
1590
1591 /* Calculate the next Tx descriptor entry. */
1592 entry = sis_priv->cur_tx % NUM_TX_DESC;
1593 sis_priv->tx_skbuff[entry] = skb;
1594
1595 /* set the transmit buffer descriptor and enable Transmit State Machine */
1596 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1597 skb->data, skb->len, PCI_DMA_TODEVICE);
1598 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1599 outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
1600
1601 sis_priv->cur_tx ++;
1602 index_cur_tx = sis_priv->cur_tx;
1603 index_dirty_tx = sis_priv->dirty_tx;
1604
1605 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1606 count_dirty_tx ++;
1607
1608 if (index_cur_tx == index_dirty_tx) {
1609 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1610 sis_priv->tx_full = 1;
1611 netif_stop_queue(net_dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001612 } else if (count_dirty_tx < NUM_TX_DESC) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001613 /* Typical path, tell upper layer that more transmission is possible */
1614 netif_start_queue(net_dev);
1615 } else {
1616 /* buffer full, tell upper layer no more transmission */
1617 sis_priv->tx_full = 1;
1618 netif_stop_queue(net_dev);
1619 }
1620
1621 spin_unlock_irqrestore(&sis_priv->lock, flags);
1622
1623 net_dev->trans_start = jiffies;
1624
1625 if (netif_msg_tx_queued(sis_priv))
1626 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1627 "to slot %d.\n",
1628 net_dev->name, skb->data, (int)skb->len, entry);
1629
1630 return 0;
1631}
1632
1633/**
1634 * sis900_interrupt - sis900 interrupt handler
1635 * @irq: the irq number
1636 * @dev_instance: the client data object
1637 * @regs: snapshot of processor context
1638 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001639 * The interrupt handler does all of the Rx thread work,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001640 * and cleans up after the Tx thread
1641 */
1642
David Howells7d12e782006-10-05 14:55:46 +01001643static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001644{
1645 struct net_device *net_dev = dev_instance;
Wang Chen8f15ea42008-11-12 23:38:36 -08001646 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001647 int boguscnt = max_interrupt_work;
1648 long ioaddr = net_dev->base_addr;
1649 u32 status;
1650 unsigned int handled = 0;
1651
1652 spin_lock (&sis_priv->lock);
1653
1654 do {
1655 status = inl(ioaddr + isr);
1656
1657 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1658 /* nothing intresting happened */
1659 break;
1660 handled = 1;
1661
1662 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1663 if (status & (RxORN | RxERR | RxOK))
1664 /* Rx interrupt */
1665 sis900_rx(net_dev);
1666
1667 if (status & (TxURN | TxERR | TxIDLE))
1668 /* Tx interrupt */
1669 sis900_finish_xmit(net_dev);
1670
1671 /* something strange happened !!! */
1672 if (status & HIBERR) {
1673 if(netif_msg_intr(sis_priv))
Joe Perches24500222007-11-19 17:48:28 -08001674 printk(KERN_INFO "%s: Abnormal interrupt, "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001675 "status %#8.8x.\n", net_dev->name, status);
1676 break;
1677 }
1678 if (--boguscnt < 0) {
1679 if(netif_msg_intr(sis_priv))
1680 printk(KERN_INFO "%s: Too much work at interrupt, "
1681 "interrupt status = %#8.8x.\n",
1682 net_dev->name, status);
1683 break;
1684 }
1685 } while (1);
1686
1687 if(netif_msg_intr(sis_priv))
1688 printk(KERN_DEBUG "%s: exiting interrupt, "
1689 "interrupt status = 0x%#8.8x.\n",
1690 net_dev->name, inl(ioaddr + isr));
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001691
Linus Torvalds1da177e2005-04-16 15:20:36 -07001692 spin_unlock (&sis_priv->lock);
1693 return IRQ_RETVAL(handled);
1694}
1695
1696/**
1697 * sis900_rx - sis900 receive routine
1698 * @net_dev: the net device which receives data
1699 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001700 * Process receive interrupt events,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001701 * put buffer to higher layer and refill buffer pool
Akinobu Mita0b280022006-03-26 01:38:58 -08001702 * Note: This function is called by interrupt handler,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001703 * don't do "too much" work here
1704 */
1705
1706static int sis900_rx(struct net_device *net_dev)
1707{
Wang Chen8f15ea42008-11-12 23:38:36 -08001708 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001709 long ioaddr = net_dev->base_addr;
1710 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1711 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
Vasily Averin7380a78a2005-10-28 16:46:35 -04001712 int rx_work_limit;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001713
1714 if (netif_msg_rx_status(sis_priv))
1715 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1716 "status:0x%8.8x\n",
1717 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
Vasily Averin7380a78a2005-10-28 16:46:35 -04001718 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001719
1720 while (rx_status & OWN) {
1721 unsigned int rx_size;
Daniele Venzanod269a692006-04-17 10:28:06 +02001722 unsigned int data_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001723
Vasily Averin7380a78a2005-10-28 16:46:35 -04001724 if (--rx_work_limit < 0)
1725 break;
1726
Daniele Venzanod269a692006-04-17 10:28:06 +02001727 data_size = rx_status & DSIZE;
1728 rx_size = data_size - CRC_SIZE;
1729
1730#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1731 /* ``TOOLONG'' flag means jumbo packet recived. */
1732 if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
1733 rx_status &= (~ ((unsigned int)TOOLONG));
1734#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735
1736 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1737 /* corrupted packet received */
1738 if (netif_msg_rx_err(sis_priv))
1739 printk(KERN_DEBUG "%s: Corrupted packet "
Daniele Venzanod269a692006-04-17 10:28:06 +02001740 "received, buffer status = 0x%8.8x/%d.\n",
1741 net_dev->name, rx_status, data_size);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001742 net_dev->stats.rx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001743 if (rx_status & OVERRUN)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001744 net_dev->stats.rx_over_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001745 if (rx_status & (TOOLONG|RUNT))
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001746 net_dev->stats.rx_length_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001747 if (rx_status & (RXISERR | FAERR))
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001748 net_dev->stats.rx_frame_errors++;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001749 if (rx_status & CRCERR)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001750 net_dev->stats.rx_crc_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001751 /* reset buffer descriptor state */
1752 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1753 } else {
1754 struct sk_buff * skb;
Neil Hormandc5a1442007-04-26 13:47:36 -04001755 struct sk_buff * rx_skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001756
Neil Hormanb748d9e2007-04-20 09:54:58 -04001757 pci_unmap_single(sis_priv->pci_dev,
1758 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1759 PCI_DMA_FROMDEVICE);
1760
1761 /* refill the Rx buffer, what if there is not enought
1762 * memory for new socket buffer ?? */
1763 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1764 /*
1765 * Not enough memory to refill the buffer
1766 * so we need to recycle the old one so
1767 * as to avoid creating a memory hole
1768 * in the rx ring
1769 */
1770 skb = sis_priv->rx_skbuff[entry];
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001771 net_dev->stats.rx_dropped++;
Neil Hormanb748d9e2007-04-20 09:54:58 -04001772 goto refill_rx_ring;
Jeff Garzik7d2e3cb2008-05-13 01:41:58 -04001773 }
Neil Hormanb748d9e2007-04-20 09:54:58 -04001774
Linus Torvalds1da177e2005-04-16 15:20:36 -07001775 /* This situation should never happen, but due to
1776 some unknow bugs, it is possible that
1777 we are working on NULL sk_buff :-( */
1778 if (sis_priv->rx_skbuff[entry] == NULL) {
1779 if (netif_msg_rx_err(sis_priv))
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001780 printk(KERN_WARNING "%s: NULL pointer "
Vasily Averin7380a78a2005-10-28 16:46:35 -04001781 "encountered in Rx ring\n"
1782 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1783 net_dev->name, sis_priv->cur_rx,
1784 sis_priv->dirty_rx);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785 break;
1786 }
1787
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788 /* give the socket buffer to upper layers */
Neil Hormandc5a1442007-04-26 13:47:36 -04001789 rx_skb = sis_priv->rx_skbuff[entry];
1790 skb_put(rx_skb, rx_size);
1791 rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
1792 netif_rx(rx_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001793
1794 /* some network statistics */
1795 if ((rx_status & BCAST) == MCAST)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001796 net_dev->stats.multicast++;
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001797 net_dev->stats.rx_bytes += rx_size;
1798 net_dev->stats.rx_packets++;
Neil Hormanb748d9e2007-04-20 09:54:58 -04001799 sis_priv->dirty_rx++;
1800refill_rx_ring:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001801 sis_priv->rx_skbuff[entry] = skb;
1802 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001803 sis_priv->rx_ring[entry].bufptr =
1804 pci_map_single(sis_priv->pci_dev, skb->data,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001805 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806 }
1807 sis_priv->cur_rx++;
1808 entry = sis_priv->cur_rx % NUM_RX_DESC;
1809 rx_status = sis_priv->rx_ring[entry].cmdsts;
1810 } // while
1811
1812 /* refill the Rx buffer, what if the rate of refilling is slower
1813 * than consuming ?? */
Vasily Averin7380a78a2005-10-28 16:46:35 -04001814 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001815 struct sk_buff *skb;
1816
1817 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1818
1819 if (sis_priv->rx_skbuff[entry] == NULL) {
1820 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1821 /* not enough memory for skbuff, this makes a
1822 * "hole" on the buffer ring, it is not clear
1823 * how the hardware will react to this kind
1824 * of degenerated buffer */
1825 if (netif_msg_rx_err(sis_priv))
Joe Perches24500222007-11-19 17:48:28 -08001826 printk(KERN_INFO "%s: Memory squeeze, "
Linus Torvalds1da177e2005-04-16 15:20:36 -07001827 "deferring packet.\n",
1828 net_dev->name);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001829 net_dev->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830 break;
1831 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001832 sis_priv->rx_skbuff[entry] = skb;
1833 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1834 sis_priv->rx_ring[entry].bufptr =
David S. Miller689be432005-06-28 15:25:31 -07001835 pci_map_single(sis_priv->pci_dev, skb->data,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001836 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1837 }
1838 }
1839 /* re-enable the potentially idle receive state matchine */
1840 outl(RxENA | inl(ioaddr + cr), ioaddr + cr );
1841
1842 return 0;
1843}
1844
1845/**
1846 * sis900_finish_xmit - finish up transmission of packets
1847 * @net_dev: the net device to be transmitted on
1848 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001849 * Check for error condition and free socket buffer etc
Linus Torvalds1da177e2005-04-16 15:20:36 -07001850 * schedule for more transmission as needed
Akinobu Mita0b280022006-03-26 01:38:58 -08001851 * Note: This function is called by interrupt handler,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001852 * don't do "too much" work here
1853 */
1854
1855static void sis900_finish_xmit (struct net_device *net_dev)
1856{
Wang Chen8f15ea42008-11-12 23:38:36 -08001857 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001858
1859 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1860 struct sk_buff *skb;
1861 unsigned int entry;
1862 u32 tx_status;
1863
1864 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1865 tx_status = sis_priv->tx_ring[entry].cmdsts;
1866
1867 if (tx_status & OWN) {
1868 /* The packet is not transmitted yet (owned by hardware) !
1869 * Note: the interrupt is generated only when Tx Machine
1870 * is idle, so this is an almost impossible case */
1871 break;
1872 }
1873
1874 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1875 /* packet unsuccessfully transmitted */
1876 if (netif_msg_tx_err(sis_priv))
1877 printk(KERN_DEBUG "%s: Transmit "
1878 "error, Tx status %8.8x.\n",
1879 net_dev->name, tx_status);
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001880 net_dev->stats.tx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001881 if (tx_status & UNDERRUN)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001882 net_dev->stats.tx_fifo_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001883 if (tx_status & ABORT)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001884 net_dev->stats.tx_aborted_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001885 if (tx_status & NOCARRIER)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001886 net_dev->stats.tx_carrier_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001887 if (tx_status & OWCOLL)
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001888 net_dev->stats.tx_window_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001889 } else {
1890 /* packet successfully transmitted */
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001891 net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
1892 net_dev->stats.tx_bytes += tx_status & DSIZE;
1893 net_dev->stats.tx_packets++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001894 }
1895 /* Free the original skb. */
1896 skb = sis_priv->tx_skbuff[entry];
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001897 pci_unmap_single(sis_priv->pci_dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001898 sis_priv->tx_ring[entry].bufptr, skb->len,
1899 PCI_DMA_TODEVICE);
1900 dev_kfree_skb_irq(skb);
1901 sis_priv->tx_skbuff[entry] = NULL;
1902 sis_priv->tx_ring[entry].bufptr = 0;
1903 sis_priv->tx_ring[entry].cmdsts = 0;
1904 }
1905
1906 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1907 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1908 /* The ring is no longer full, clear tx_full and schedule
1909 * more transmission by netif_wake_queue(net_dev) */
1910 sis_priv->tx_full = 0;
1911 netif_wake_queue (net_dev);
1912 }
1913}
1914
1915/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001916 * sis900_close - close sis900 device
Linus Torvalds1da177e2005-04-16 15:20:36 -07001917 * @net_dev: the net device to be closed
1918 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001919 * Disable interrupts, stop the Tx and Rx Status Machine
Linus Torvalds1da177e2005-04-16 15:20:36 -07001920 * free Tx and RX socket buffer
1921 */
1922
1923static int sis900_close(struct net_device *net_dev)
1924{
1925 long ioaddr = net_dev->base_addr;
Wang Chen8f15ea42008-11-12 23:38:36 -08001926 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001927 struct sk_buff *skb;
1928 int i;
1929
1930 netif_stop_queue(net_dev);
1931
1932 /* Disable interrupts by clearing the interrupt mask. */
1933 outl(0x0000, ioaddr + imr);
1934 outl(0x0000, ioaddr + ier);
1935
1936 /* Stop the chip's Tx and Rx Status Machine */
1937 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
1938
1939 del_timer(&sis_priv->timer);
1940
1941 free_irq(net_dev->irq, net_dev);
1942
1943 /* Free Tx and RX skbuff */
1944 for (i = 0; i < NUM_RX_DESC; i++) {
1945 skb = sis_priv->rx_skbuff[i];
1946 if (skb) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001947 pci_unmap_single(sis_priv->pci_dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001948 sis_priv->rx_ring[i].bufptr,
1949 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1950 dev_kfree_skb(skb);
1951 sis_priv->rx_skbuff[i] = NULL;
1952 }
1953 }
1954 for (i = 0; i < NUM_TX_DESC; i++) {
1955 skb = sis_priv->tx_skbuff[i];
1956 if (skb) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001957 pci_unmap_single(sis_priv->pci_dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001958 sis_priv->tx_ring[i].bufptr, skb->len,
1959 PCI_DMA_TODEVICE);
1960 dev_kfree_skb(skb);
1961 sis_priv->tx_skbuff[i] = NULL;
1962 }
1963 }
1964
1965 /* Green! Put the chip in low-power mode. */
1966
1967 return 0;
1968}
1969
1970/**
1971 * sis900_get_drvinfo - Return information about driver
1972 * @net_dev: the net device to probe
1973 * @info: container for info returned
1974 *
1975 * Process ethtool command such as "ehtool -i" to show information
1976 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001977
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978static void sis900_get_drvinfo(struct net_device *net_dev,
1979 struct ethtool_drvinfo *info)
1980{
Wang Chen8f15ea42008-11-12 23:38:36 -08001981 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001982
1983 strcpy (info->driver, SIS900_MODULE_NAME);
1984 strcpy (info->version, SIS900_DRV_VERSION);
1985 strcpy (info->bus_info, pci_name(sis_priv->pci_dev));
1986}
1987
1988static u32 sis900_get_msglevel(struct net_device *net_dev)
1989{
Wang Chen8f15ea42008-11-12 23:38:36 -08001990 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001991 return sis_priv->msg_enable;
1992}
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001993
Linus Torvalds1da177e2005-04-16 15:20:36 -07001994static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
1995{
Wang Chen8f15ea42008-11-12 23:38:36 -08001996 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997 sis_priv->msg_enable = value;
1998}
1999
Daniele Venzanoda369b02005-05-12 20:13:14 -04002000static u32 sis900_get_link(struct net_device *net_dev)
2001{
Wang Chen8f15ea42008-11-12 23:38:36 -08002002 struct sis900_private *sis_priv = netdev_priv(net_dev);
Daniele Venzanoda369b02005-05-12 20:13:14 -04002003 return mii_link_ok(&sis_priv->mii_info);
2004}
2005
2006static int sis900_get_settings(struct net_device *net_dev,
2007 struct ethtool_cmd *cmd)
2008{
Wang Chen8f15ea42008-11-12 23:38:36 -08002009 struct sis900_private *sis_priv = netdev_priv(net_dev);
Daniele Venzanoda369b02005-05-12 20:13:14 -04002010 spin_lock_irq(&sis_priv->lock);
2011 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2012 spin_unlock_irq(&sis_priv->lock);
2013 return 0;
2014}
2015
2016static int sis900_set_settings(struct net_device *net_dev,
2017 struct ethtool_cmd *cmd)
2018{
Wang Chen8f15ea42008-11-12 23:38:36 -08002019 struct sis900_private *sis_priv = netdev_priv(net_dev);
Daniele Venzanoda369b02005-05-12 20:13:14 -04002020 int rt;
2021 spin_lock_irq(&sis_priv->lock);
2022 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2023 spin_unlock_irq(&sis_priv->lock);
2024 return rt;
2025}
2026
2027static int sis900_nway_reset(struct net_device *net_dev)
2028{
Wang Chen8f15ea42008-11-12 23:38:36 -08002029 struct sis900_private *sis_priv = netdev_priv(net_dev);
Daniele Venzanoda369b02005-05-12 20:13:14 -04002030 return mii_nway_restart(&sis_priv->mii_info);
2031}
2032
Daniele Venzanoea37cce2005-10-11 09:44:30 +02002033/**
2034 * sis900_set_wol - Set up Wake on Lan registers
2035 * @net_dev: the net device to probe
2036 * @wol: container for info passed to the driver
2037 *
2038 * Process ethtool command "wol" to setup wake on lan features.
2039 * SiS900 supports sending WoL events if a correct packet is received,
2040 * but there is no simple way to filter them to only a subset (broadcast,
2041 * multicast, unicast or arp).
2042 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002043
Daniele Venzanoea37cce2005-10-11 09:44:30 +02002044static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2045{
Wang Chen8f15ea42008-11-12 23:38:36 -08002046 struct sis900_private *sis_priv = netdev_priv(net_dev);
Daniele Venzanoea37cce2005-10-11 09:44:30 +02002047 long pmctrl_addr = net_dev->base_addr + pmctrl;
2048 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2049
2050 if (wol->wolopts == 0) {
2051 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
Daniele Venzano7bef4b32006-02-25 17:01:09 -05002052 cfgpmcsr &= ~PME_EN;
Daniele Venzanoea37cce2005-10-11 09:44:30 +02002053 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2054 outl(pmctrl_bits, pmctrl_addr);
2055 if (netif_msg_wol(sis_priv))
2056 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2057 return 0;
2058 }
2059
2060 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2061 | WAKE_BCAST | WAKE_ARP))
2062 return -EINVAL;
2063
2064 if (wol->wolopts & WAKE_MAGIC)
2065 pmctrl_bits |= MAGICPKT;
2066 if (wol->wolopts & WAKE_PHY)
2067 pmctrl_bits |= LINKON;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002068
Daniele Venzanoea37cce2005-10-11 09:44:30 +02002069 outl(pmctrl_bits, pmctrl_addr);
2070
2071 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2072 cfgpmcsr |= PME_EN;
2073 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2074 if (netif_msg_wol(sis_priv))
2075 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2076
2077 return 0;
2078}
2079
2080static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2081{
2082 long pmctrl_addr = net_dev->base_addr + pmctrl;
2083 u32 pmctrl_bits;
2084
2085 pmctrl_bits = inl(pmctrl_addr);
2086 if (pmctrl_bits & MAGICPKT)
2087 wol->wolopts |= WAKE_MAGIC;
2088 if (pmctrl_bits & LINKON)
2089 wol->wolopts |= WAKE_PHY;
2090
2091 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2092}
2093
Jeff Garzik7282d492006-09-13 14:30:00 -04002094static const struct ethtool_ops sis900_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002095 .get_drvinfo = sis900_get_drvinfo,
2096 .get_msglevel = sis900_get_msglevel,
2097 .set_msglevel = sis900_set_msglevel,
Daniele Venzanoda369b02005-05-12 20:13:14 -04002098 .get_link = sis900_get_link,
2099 .get_settings = sis900_get_settings,
2100 .set_settings = sis900_set_settings,
2101 .nway_reset = sis900_nway_reset,
Daniele Venzanoea37cce2005-10-11 09:44:30 +02002102 .get_wol = sis900_get_wol,
2103 .set_wol = sis900_set_wol
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104};
2105
2106/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002107 * mii_ioctl - process MII i/o control command
Linus Torvalds1da177e2005-04-16 15:20:36 -07002108 * @net_dev: the net device to command for
2109 * @rq: parameter for command
2110 * @cmd: the i/o command
2111 *
2112 * Process MII command like read/write MII register
2113 */
2114
2115static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2116{
Wang Chen8f15ea42008-11-12 23:38:36 -08002117 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002118 struct mii_ioctl_data *data = if_mii(rq);
2119
2120 switch(cmd) {
2121 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2122 data->phy_id = sis_priv->mii->phy_addr;
2123 /* Fall Through */
2124
2125 case SIOCGMIIREG: /* Read MII PHY register. */
2126 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2127 return 0;
2128
2129 case SIOCSMIIREG: /* Write MII PHY register. */
2130 if (!capable(CAP_NET_ADMIN))
2131 return -EPERM;
2132 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2133 return 0;
2134 default:
2135 return -EOPNOTSUPP;
2136 }
2137}
2138
2139/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002140 * sis900_set_config - Set media type by net_device.set_config
Linus Torvalds1da177e2005-04-16 15:20:36 -07002141 * @dev: the net device for media type change
2142 * @map: ifmap passed by ifconfig
2143 *
2144 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2145 * we support only port changes. All other runtime configuration
2146 * changes will be ignored
2147 */
2148
2149static int sis900_set_config(struct net_device *dev, struct ifmap *map)
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002150{
Wang Chen8f15ea42008-11-12 23:38:36 -08002151 struct sis900_private *sis_priv = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002152 struct mii_phy *mii_phy = sis_priv->mii;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002153
Linus Torvalds1da177e2005-04-16 15:20:36 -07002154 u16 status;
2155
2156 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2157 /* we switch on the ifmap->port field. I couldn't find anything
2158 * like a definition or standard for the values of that field.
2159 * I think the meaning of those values is device specific. But
2160 * since I would like to change the media type via the ifconfig
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002161 * command I use the definition from linux/netdevice.h
Linus Torvalds1da177e2005-04-16 15:20:36 -07002162 * (which seems to be different from the ifport(pcmcia) definition) */
2163 switch(map->port){
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002164 case IF_PORT_UNKNOWN: /* use auto here */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002165 dev->if_port = map->port;
2166 /* we are going to change the media type, so the Link
2167 * will be temporary down and we need to reflect that
2168 * here. When the Link comes up again, it will be
2169 * sensed by the sis_timer procedure, which also does
2170 * all the rest for us */
2171 netif_carrier_off(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002172
Linus Torvalds1da177e2005-04-16 15:20:36 -07002173 /* read current state */
2174 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002175
Linus Torvalds1da177e2005-04-16 15:20:36 -07002176 /* enable auto negotiation and reset the negotioation
2177 * (I don't really know what the auto negatiotiation
2178 * reset really means, but it sounds for me right to
2179 * do one here) */
2180 mdio_write(dev, mii_phy->phy_addr,
2181 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2182
2183 break;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002184
2185 case IF_PORT_10BASET: /* 10BaseT */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002186 dev->if_port = map->port;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002187
Linus Torvalds1da177e2005-04-16 15:20:36 -07002188 /* we are going to change the media type, so the Link
2189 * will be temporary down and we need to reflect that
2190 * here. When the Link comes up again, it will be
2191 * sensed by the sis_timer procedure, which also does
2192 * all the rest for us */
2193 netif_carrier_off(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002194
Linus Torvalds1da177e2005-04-16 15:20:36 -07002195 /* set Speed to 10Mbps */
2196 /* read current state */
2197 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002198
Linus Torvalds1da177e2005-04-16 15:20:36 -07002199 /* disable auto negotiation and force 10MBit mode*/
2200 mdio_write(dev, mii_phy->phy_addr,
2201 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2202 MII_CNTL_AUTO));
2203 break;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002204
Linus Torvalds1da177e2005-04-16 15:20:36 -07002205 case IF_PORT_100BASET: /* 100BaseT */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002206 case IF_PORT_100BASETX: /* 100BaseTx */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002207 dev->if_port = map->port;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002208
Linus Torvalds1da177e2005-04-16 15:20:36 -07002209 /* we are going to change the media type, so the Link
2210 * will be temporary down and we need to reflect that
2211 * here. When the Link comes up again, it will be
2212 * sensed by the sis_timer procedure, which also does
2213 * all the rest for us */
2214 netif_carrier_off(dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002215
Linus Torvalds1da177e2005-04-16 15:20:36 -07002216 /* set Speed to 100Mbps */
2217 /* disable auto negotiation and enable 100MBit Mode */
2218 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2219 mdio_write(dev, mii_phy->phy_addr,
2220 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2221 MII_CNTL_SPEED);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002222
Linus Torvalds1da177e2005-04-16 15:20:36 -07002223 break;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002224
Linus Torvalds1da177e2005-04-16 15:20:36 -07002225 case IF_PORT_10BASE2: /* 10Base2 */
2226 case IF_PORT_AUI: /* AUI */
2227 case IF_PORT_100BASEFX: /* 100BaseFx */
2228 /* These Modes are not supported (are they?)*/
2229 return -EOPNOTSUPP;
2230 break;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002231
Linus Torvalds1da177e2005-04-16 15:20:36 -07002232 default:
2233 return -EINVAL;
2234 }
2235 }
2236 return 0;
2237}
2238
2239/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002240 * sis900_mcast_bitnr - compute hashtable index
Linus Torvalds1da177e2005-04-16 15:20:36 -07002241 * @addr: multicast address
2242 * @revision: revision id of chip
2243 *
2244 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2245 * hash table, which makes this function a little bit different from other drivers
2246 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002247 * multicast hash table.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002248 */
2249
2250static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2251{
2252
2253 u32 crc = ether_crc(6, addr);
2254
2255 /* leave 8 or 7 most siginifant bits */
2256 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2257 return ((int)(crc >> 24));
2258 else
2259 return ((int)(crc >> 25));
2260}
2261
2262/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002263 * set_rx_mode - Set SiS900 receive mode
Linus Torvalds1da177e2005-04-16 15:20:36 -07002264 * @net_dev: the net device to be set
2265 *
2266 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2267 * And set the appropriate multicast filter.
2268 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2269 */
2270
2271static void set_rx_mode(struct net_device *net_dev)
2272{
2273 long ioaddr = net_dev->base_addr;
Wang Chen8f15ea42008-11-12 23:38:36 -08002274 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002275 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2276 int i, table_entries;
2277 u32 rx_mode;
2278
Alexey Dobriyan7f927fc2006-03-28 01:56:53 -08002279 /* 635 Hash Table entries = 256(2^16) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002280 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2281 (sis_priv->chipset_rev == SIS900B_900_REV))
2282 table_entries = 16;
2283 else
2284 table_entries = 8;
2285
2286 if (net_dev->flags & IFF_PROMISC) {
2287 /* Accept any kinds of packets */
2288 rx_mode = RFPromiscuous;
2289 for (i = 0; i < table_entries; i++)
2290 mc_filter[i] = 0xffff;
2291 } else if ((net_dev->mc_count > multicast_filter_limit) ||
2292 (net_dev->flags & IFF_ALLMULTI)) {
2293 /* too many multicast addresses or accept all multicast packet */
2294 rx_mode = RFAAB | RFAAM;
2295 for (i = 0; i < table_entries; i++)
2296 mc_filter[i] = 0xffff;
2297 } else {
2298 /* Accept Broadcast packet, destination address matchs our
2299 * MAC address, use Receive Filter to reject unwanted MCAST
2300 * packets */
2301 struct dev_mc_list *mclist;
2302 rx_mode = RFAAB;
2303 for (i = 0, mclist = net_dev->mc_list;
2304 mclist && i < net_dev->mc_count;
2305 i++, mclist = mclist->next) {
2306 unsigned int bit_nr =
2307 sis900_mcast_bitnr(mclist->dmi_addr, sis_priv->chipset_rev);
2308 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2309 }
2310 }
2311
2312 /* update Multicast Hash Table in Receive Filter */
2313 for (i = 0; i < table_entries; i++) {
2314 /* why plus 0x04 ??, That makes the correct value for hash table. */
2315 outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr);
2316 outl(mc_filter[i], ioaddr + rfdr);
2317 }
2318
2319 outl(RFEN | rx_mode, ioaddr + rfcr);
2320
2321 /* sis900 is capable of looping back packets at MAC level for
2322 * debugging purpose */
2323 if (net_dev->flags & IFF_LOOPBACK) {
2324 u32 cr_saved;
2325 /* We must disable Tx/Rx before setting loopback mode */
2326 cr_saved = inl(ioaddr + cr);
2327 outl(cr_saved | TxDIS | RxDIS, ioaddr + cr);
2328 /* enable loopback */
2329 outl(inl(ioaddr + txcfg) | TxMLB, ioaddr + txcfg);
2330 outl(inl(ioaddr + rxcfg) | RxATX, ioaddr + rxcfg);
2331 /* restore cr */
2332 outl(cr_saved, ioaddr + cr);
2333 }
2334
2335 return;
2336}
2337
2338/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002339 * sis900_reset - Reset sis900 MAC
Linus Torvalds1da177e2005-04-16 15:20:36 -07002340 * @net_dev: the net device to reset
2341 *
2342 * reset sis900 MAC and wait until finished
2343 * reset through command register
2344 * change backoff algorithm for 900B0 & 635 M/B
2345 */
2346
2347static void sis900_reset(struct net_device *net_dev)
2348{
Wang Chen8f15ea42008-11-12 23:38:36 -08002349 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002350 long ioaddr = net_dev->base_addr;
2351 int i = 0;
2352 u32 status = TxRCMP | RxRCMP;
2353
2354 outl(0, ioaddr + ier);
2355 outl(0, ioaddr + imr);
2356 outl(0, ioaddr + rfcr);
2357
2358 outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002359
Linus Torvalds1da177e2005-04-16 15:20:36 -07002360 /* Check that the chip has finished the reset. */
2361 while (status && (i++ < 1000)) {
2362 status ^= (inl(isr + ioaddr) & status);
2363 }
2364
2365 if( (sis_priv->chipset_rev >= SIS635A_900_REV) ||
2366 (sis_priv->chipset_rev == SIS900B_900_REV) )
2367 outl(PESEL | RND_CNT, ioaddr + cfg);
2368 else
2369 outl(PESEL, ioaddr + cfg);
2370}
2371
2372/**
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002373 * sis900_remove - Remove sis900 device
Linus Torvalds1da177e2005-04-16 15:20:36 -07002374 * @pci_dev: the pci device to be removed
2375 *
2376 * remove and release SiS900 net device
2377 */
2378
2379static void __devexit sis900_remove(struct pci_dev *pci_dev)
2380{
2381 struct net_device *net_dev = pci_get_drvdata(pci_dev);
Wang Chen8f15ea42008-11-12 23:38:36 -08002382 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002383 struct mii_phy *phy = NULL;
2384
2385 while (sis_priv->first_mii) {
2386 phy = sis_priv->first_mii;
2387 sis_priv->first_mii = phy->next;
2388 kfree(phy);
2389 }
2390
2391 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2392 sis_priv->rx_ring_dma);
2393 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2394 sis_priv->tx_ring_dma);
2395 unregister_netdev(net_dev);
2396 free_netdev(net_dev);
2397 pci_release_regions(pci_dev);
2398 pci_set_drvdata(pci_dev, NULL);
2399}
2400
2401#ifdef CONFIG_PM
2402
2403static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2404{
2405 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2406 long ioaddr = net_dev->base_addr;
2407
2408 if(!netif_running(net_dev))
2409 return 0;
2410
2411 netif_stop_queue(net_dev);
2412 netif_device_detach(net_dev);
2413
2414 /* Stop the chip's Tx and Rx Status Machine */
2415 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
2416
2417 pci_set_power_state(pci_dev, PCI_D3hot);
2418 pci_save_state(pci_dev);
2419
2420 return 0;
2421}
2422
2423static int sis900_resume(struct pci_dev *pci_dev)
2424{
2425 struct net_device *net_dev = pci_get_drvdata(pci_dev);
Wang Chen8f15ea42008-11-12 23:38:36 -08002426 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002427 long ioaddr = net_dev->base_addr;
2428
2429 if(!netif_running(net_dev))
2430 return 0;
2431 pci_restore_state(pci_dev);
2432 pci_set_power_state(pci_dev, PCI_D0);
2433
2434 sis900_init_rxfilter(net_dev);
2435
2436 sis900_init_tx_ring(net_dev);
2437 sis900_init_rx_ring(net_dev);
2438
2439 set_rx_mode(net_dev);
2440
2441 netif_device_attach(net_dev);
2442 netif_start_queue(net_dev);
2443
2444 /* Workaround for EDB */
2445 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2446
2447 /* Enable all known interrupts by setting the interrupt mask. */
2448 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
2449 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
2450 outl(IE, ioaddr + ier);
2451
2452 sis900_check_mode(net_dev, sis_priv->mii);
2453
2454 return 0;
2455}
2456#endif /* CONFIG_PM */
2457
2458static struct pci_driver sis900_pci_driver = {
2459 .name = SIS900_MODULE_NAME,
2460 .id_table = sis900_pci_tbl,
2461 .probe = sis900_probe,
2462 .remove = __devexit_p(sis900_remove),
2463#ifdef CONFIG_PM
2464 .suspend = sis900_suspend,
2465 .resume = sis900_resume,
2466#endif /* CONFIG_PM */
2467};
2468
2469static int __init sis900_init_module(void)
2470{
2471/* when a module, this is printed whether or not devices are found in probe */
2472#ifdef MODULE
2473 printk(version);
2474#endif
2475
Jeff Garzik29917622006-08-19 17:48:59 -04002476 return pci_register_driver(&sis900_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002477}
2478
2479static void __exit sis900_cleanup_module(void)
2480{
2481 pci_unregister_driver(&sis900_pci_driver);
2482}
2483
2484module_init(sis900_init_module);
2485module_exit(sis900_cleanup_module);
2486