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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
Stephen Hemminger9a3c3de2009-02-26 10:19:26 +000083static const char version[] __devinitconst =
84 KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -070085
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,
Stephen Hemmingerfe96aaa2009-01-09 11:13:14 +0000392 .ndo_set_mac_address = eth_mac_addr,
Stephen Hemminger09ab9e72008-11-21 17:34:32 -0800393 .ndo_do_ioctl = mii_ioctl,
394 .ndo_tx_timeout = sis900_tx_timeout,
395#ifdef CONFIG_NET_POLL_CONTROLLER
396 .ndo_poll_controller = sis900_poll,
397#endif
398};
399
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400/**
401 * sis900_probe - Probe for sis900 device
402 * @pci_dev: the sis900 pci device
403 * @pci_id: the pci device ID
404 *
405 * Check and probe sis900 net device for @pci_dev.
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400406 * Get mac address according to the chip revision,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 * and assign SiS900-specific entries in the device structure.
408 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
409 */
410
411static int __devinit sis900_probe(struct pci_dev *pci_dev,
412 const struct pci_device_id *pci_id)
413{
414 struct sis900_private *sis_priv;
415 struct net_device *net_dev;
416 struct pci_dev *dev;
417 dma_addr_t ring_dma;
418 void *ring_space;
419 long ioaddr;
420 int i, ret;
Arjan van de Venf71e1302006-03-03 21:33:57 -0500421 const char *card_name = card_names[pci_id->driver_data];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 const char *dev_name = pci_name(pci_dev);
423
424/* when built into the kernel, we only print version if device is found */
425#ifndef MODULE
426 static int printed_version;
427 if (!printed_version++)
428 printk(version);
429#endif
430
431 /* setup various bits in PCI command register */
432 ret = pci_enable_device(pci_dev);
433 if(ret) return ret;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400434
Yang Hongyang284901a2009-04-06 19:01:15 -0700435 i = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 if(i){
Joe Perches24500222007-11-19 17:48:28 -0800437 printk(KERN_ERR "sis900.c: architecture does not support "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 "32bit PCI busmaster DMA\n");
439 return i;
440 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400441
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 pci_set_master(pci_dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400443
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 net_dev = alloc_etherdev(sizeof(struct sis900_private));
445 if (!net_dev)
446 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
448
449 /* We do a request_region() to register /proc/ioports info. */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400450 ioaddr = pci_resource_start(pci_dev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 ret = pci_request_regions(pci_dev, "sis900");
452 if (ret)
453 goto err_out;
454
Wang Chen8f15ea42008-11-12 23:38:36 -0800455 sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 net_dev->base_addr = ioaddr;
457 net_dev->irq = pci_dev->irq;
458 sis_priv->pci_dev = pci_dev;
459 spin_lock_init(&sis_priv->lock);
460
461 pci_set_drvdata(pci_dev, net_dev);
462
463 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
464 if (!ring_space) {
465 ret = -ENOMEM;
466 goto err_out_cleardev;
467 }
468 sis_priv->tx_ring = (BufferDesc *)ring_space;
469 sis_priv->tx_ring_dma = ring_dma;
470
471 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
472 if (!ring_space) {
473 ret = -ENOMEM;
474 goto err_unmap_tx;
475 }
476 sis_priv->rx_ring = (BufferDesc *)ring_space;
477 sis_priv->rx_ring_dma = ring_dma;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400478
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 /* The SiS900-specific entries in the device structure. */
Stephen Hemminger09ab9e72008-11-21 17:34:32 -0800480 net_dev->netdev_ops = &sis900_netdev_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 net_dev->watchdog_timeo = TX_TIMEOUT;
482 net_dev->ethtool_ops = &sis900_ethtool_ops;
483
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 if (sis900_debug > 0)
485 sis_priv->msg_enable = sis900_debug;
486 else
487 sis_priv->msg_enable = SIS900_DEF_MSG;
Daniele Venzanoda369b02005-05-12 20:13:14 -0400488
489 sis_priv->mii_info.dev = net_dev;
490 sis_priv->mii_info.mdio_read = mdio_read;
491 sis_priv->mii_info.mdio_write = mdio_write;
492 sis_priv->mii_info.phy_id_mask = 0x1f;
493 sis_priv->mii_info.reg_num_mask = 0x1f;
494
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 /* Get Mac address according to the chip revision */
496 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &(sis_priv->chipset_rev));
497 if(netif_msg_probe(sis_priv))
498 printk(KERN_DEBUG "%s: detected revision %2.2x, "
499 "trying to get MAC address...\n",
500 dev_name, sis_priv->chipset_rev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400501
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 ret = 0;
503 if (sis_priv->chipset_rev == SIS630E_900_REV)
504 ret = sis630e_get_mac_addr(pci_dev, net_dev);
505 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
506 ret = sis635_get_mac_addr(pci_dev, net_dev);
507 else if (sis_priv->chipset_rev == SIS96x_900_REV)
508 ret = sis96x_get_mac_addr(pci_dev, net_dev);
509 else
510 ret = sis900_get_mac_addr(pci_dev, net_dev);
511
Daniele Venzanod1d5e6b2009-01-14 20:46:24 -0800512 if (!ret || !is_valid_ether_addr(net_dev->dev_addr)) {
513 random_ether_addr(net_dev->dev_addr);
514 printk(KERN_WARNING "%s: Unreadable or invalid MAC address,"
515 "using random generated one\n", dev_name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400517
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 /* 630ET : set the mii access mode as software-mode */
519 if (sis_priv->chipset_rev == SIS630ET_900_REV)
520 outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
521
522 /* probe for mii transceiver */
523 if (sis900_mii_probe(net_dev) == 0) {
524 printk(KERN_WARNING "%s: Error probing MII device.\n",
525 dev_name);
526 ret = -ENODEV;
527 goto err_unmap_rx;
528 }
529
530 /* save our host bridge revision */
531 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
532 if (dev) {
533 pci_read_config_byte(dev, PCI_CLASS_REVISION, &sis_priv->host_bridge_rev);
534 pci_dev_put(dev);
535 }
536
537 ret = register_netdev(net_dev);
538 if (ret)
539 goto err_unmap_rx;
540
541 /* print some information about our NIC */
Johannes Berge1749612008-10-27 15:59:26 -0700542 printk(KERN_INFO "%s: %s at %#lx, IRQ %d, %pM\n",
Joe Perches0795af52007-10-03 17:59:30 -0700543 net_dev->name, card_name, ioaddr, net_dev->irq,
Johannes Berge1749612008-10-27 15:59:26 -0700544 net_dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545
Daniele Venzanoea37cce2005-10-11 09:44:30 +0200546 /* Detect Wake on Lan support */
Daniele Venzano7bef4b32006-02-25 17:01:09 -0500547 ret = (inl(net_dev->base_addr + CFGPMC) & PMESP) >> 27;
Daniele Venzanoea37cce2005-10-11 09:44:30 +0200548 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
549 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
550
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 return 0;
552
553 err_unmap_rx:
554 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
555 sis_priv->rx_ring_dma);
556 err_unmap_tx:
557 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
558 sis_priv->tx_ring_dma);
559 err_out_cleardev:
560 pci_set_drvdata(pci_dev, NULL);
561 pci_release_regions(pci_dev);
562 err_out:
563 free_netdev(net_dev);
564 return ret;
565}
566
567/**
568 * sis900_mii_probe - Probe MII PHY for sis900
569 * @net_dev: the net device to probe for
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400570 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 * Search for total of 32 possible mii phy addresses.
572 * Identify and set current phy if found one,
573 * return error if it failed to found.
574 */
575
Adrian Bunk4e50a8e2007-07-10 14:44:35 +0200576static int __devinit sis900_mii_probe(struct net_device * net_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577{
Wang Chen8f15ea42008-11-12 23:38:36 -0800578 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 const char *dev_name = pci_name(sis_priv->pci_dev);
580 u16 poll_bit = MII_STAT_LINK, status = 0;
581 unsigned long timeout = jiffies + 5 * HZ;
582 int phy_addr;
583
584 sis_priv->mii = NULL;
585
586 /* search for total of 32 possible mii phy addresses */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400587 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 struct mii_phy * mii_phy = NULL;
589 u16 mii_status;
590 int i;
591
592 mii_phy = NULL;
593 for(i = 0; i < 2; i++)
594 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
595
596 if (mii_status == 0xffff || mii_status == 0x0000) {
597 if (netif_msg_probe(sis_priv))
598 printk(KERN_DEBUG "%s: MII at address %d"
599 " not accessible\n",
600 dev_name, phy_addr);
601 continue;
602 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400603
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
605 printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n");
606 mii_phy = sis_priv->first_mii;
607 while (mii_phy) {
608 struct mii_phy *phy;
609 phy = mii_phy;
610 mii_phy = mii_phy->next;
611 kfree(phy);
612 }
613 return 0;
614 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400615
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400617 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618 mii_phy->phy_addr = phy_addr;
619 mii_phy->status = mii_status;
620 mii_phy->next = sis_priv->mii;
621 sis_priv->mii = mii_phy;
622 sis_priv->first_mii = mii_phy;
623
624 for (i = 0; mii_chip_table[i].phy_id1; i++)
625 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
626 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
627 mii_phy->phy_types = mii_chip_table[i].phy_types;
628 if (mii_chip_table[i].phy_types == MIX)
629 mii_phy->phy_types =
630 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
631 printk(KERN_INFO "%s: %s transceiver found "
632 "at address %d.\n",
633 dev_name,
634 mii_chip_table[i].name,
635 phy_addr);
636 break;
637 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400638
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639 if( !mii_chip_table[i].phy_id1 ) {
640 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
641 dev_name, phy_addr);
642 mii_phy->phy_types = UNKNOWN;
643 }
644 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400645
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646 if (sis_priv->mii == NULL) {
647 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
648 return 0;
649 }
650
651 /* select default PHY for mac */
652 sis_priv->mii = NULL;
653 sis900_default_phy( net_dev );
654
655 /* Reset phy if default phy is internal sis900 */
656 if ((sis_priv->mii->phy_id0 == 0x001D) &&
657 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
658 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400659
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 /* workaround for ICS1893 PHY */
661 if ((sis_priv->mii->phy_id0 == 0x0015) &&
662 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
663 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
664
665 if(status & MII_STAT_LINK){
666 while (poll_bit) {
667 yield();
668
669 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
670 if (time_after_eq(jiffies, timeout)) {
671 printk(KERN_WARNING "%s: reset phy and link down now\n",
672 dev_name);
673 return -ETIME;
674 }
675 }
676 }
677
678 if (sis_priv->chipset_rev == SIS630E_900_REV) {
679 /* SiS 630E has some bugs on default value of PHY registers */
680 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
681 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
682 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
683 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400684 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 }
686
687 if (sis_priv->mii->status & MII_STAT_LINK)
688 netif_carrier_on(net_dev);
689 else
690 netif_carrier_off(net_dev);
691
692 return 1;
693}
694
695/**
696 * sis900_default_phy - Select default PHY for sis900 mac.
697 * @net_dev: the net device to probe for
698 *
699 * Select first detected PHY with link as default.
700 * If no one is link on, select PHY whose types is HOME as default.
701 * If HOME doesn't exist, select LAN.
702 */
703
704static u16 sis900_default_phy(struct net_device * net_dev)
705{
Wang Chen8f15ea42008-11-12 23:38:36 -0800706 struct sis900_private *sis_priv = netdev_priv(net_dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400707 struct mii_phy *phy = NULL, *phy_home = NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708 *default_phy = NULL, *phy_lan = NULL;
709 u16 status;
710
711 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
712 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
713 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
714
715 /* Link ON & Not select default PHY & not ghost PHY */
716 if ((status & MII_STAT_LINK) && !default_phy &&
717 (phy->phy_types != UNKNOWN))
718 default_phy = phy;
719 else {
720 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
721 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
722 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
723 if (phy->phy_types == HOME)
724 phy_home = phy;
725 else if(phy->phy_types == LAN)
726 phy_lan = phy;
727 }
728 }
729
730 if (!default_phy && phy_home)
731 default_phy = phy_home;
732 else if (!default_phy && phy_lan)
733 default_phy = phy_lan;
734 else if (!default_phy)
735 default_phy = sis_priv->first_mii;
736
737 if (sis_priv->mii != default_phy) {
738 sis_priv->mii = default_phy;
739 sis_priv->cur_phy = default_phy->phy_addr;
740 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
741 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
742 }
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400743
Daniele Venzanoda369b02005-05-12 20:13:14 -0400744 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
745
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
747 status &= (~MII_CNTL_ISOLATE);
748
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400749 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
751 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
752
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400753 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754}
755
756
757/**
758 * sis900_set_capability - set the media capability of network adapter.
759 * @net_dev : the net device to probe for
760 * @phy : default PHY
761 *
762 * Set the media capability of network adapter according to
763 * mii status register. It's necessary before auto-negotiate.
764 */
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400765
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
767{
768 u16 cap;
769 u16 status;
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400770
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
772 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400773
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774 cap = MII_NWAY_CSMA_CD |
775 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
776 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
777 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
778 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
779
780 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
781}
782
783
784/* Delay between EEPROM clock transitions. */
785#define eeprom_delay() inl(ee_addr)
786
787/**
788 * read_eeprom - Read Serial EEPROM
789 * @ioaddr: base i/o address
790 * @location: the EEPROM location to read
791 *
792 * Read Serial EEPROM through EEPROM Access Register.
793 * Note that location is in word (16 bits) unit
794 */
795
796static u16 __devinit read_eeprom(long ioaddr, int location)
797{
798 int i;
799 u16 retval = 0;
800 long ee_addr = ioaddr + mear;
801 u32 read_cmd = location | EEread;
802
803 outl(0, ee_addr);
804 eeprom_delay();
805 outl(EECS, ee_addr);
806 eeprom_delay();
807
808 /* Shift the read command (9) bits out. */
809 for (i = 8; i >= 0; i--) {
810 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
811 outl(dataval, ee_addr);
812 eeprom_delay();
813 outl(dataval | EECLK, ee_addr);
814 eeprom_delay();
815 }
816 outl(EECS, ee_addr);
817 eeprom_delay();
818
819 /* read the 16-bits data in */
820 for (i = 16; i > 0; i--) {
821 outl(EECS, ee_addr);
822 eeprom_delay();
823 outl(EECS | EECLK, ee_addr);
824 eeprom_delay();
825 retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
826 eeprom_delay();
827 }
828
829 /* Terminate the EEPROM access. */
830 outl(0, ee_addr);
831 eeprom_delay();
832
833 return (retval);
834}
835
836/* Read and write the MII management registers using software-generated
837 serial MDIO protocol. Note that the command bits and data bits are
838 send out separately */
839#define mdio_delay() inl(mdio_addr)
840
841static void mdio_idle(long mdio_addr)
842{
843 outl(MDIO | MDDIR, mdio_addr);
844 mdio_delay();
845 outl(MDIO | MDDIR | MDC, mdio_addr);
846}
847
848/* Syncronize the MII management interface by shifting 32 one bits out. */
849static void mdio_reset(long mdio_addr)
850{
851 int i;
852
853 for (i = 31; i >= 0; i--) {
854 outl(MDDIR | MDIO, mdio_addr);
855 mdio_delay();
856 outl(MDDIR | MDIO | MDC, mdio_addr);
857 mdio_delay();
858 }
859 return;
860}
861
862/**
863 * mdio_read - read MII PHY register
864 * @net_dev: the net device to read
865 * @phy_id: the phy address to read
866 * @location: the phy regiester id to read
867 *
868 * Read MII registers through MDIO and MDC
869 * using MDIO management frame structure and protocol(defined by ISO/IEC).
870 * Please see SiS7014 or ICS spec
871 */
872
Daniele Venzanoda369b02005-05-12 20:13:14 -0400873static int mdio_read(struct net_device *net_dev, int phy_id, int location)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874{
875 long mdio_addr = net_dev->base_addr + mear;
876 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
877 u16 retval = 0;
878 int i;
879
880 mdio_reset(mdio_addr);
881 mdio_idle(mdio_addr);
882
883 for (i = 15; i >= 0; i--) {
884 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
885 outl(dataval, mdio_addr);
886 mdio_delay();
887 outl(dataval | MDC, mdio_addr);
888 mdio_delay();
889 }
890
891 /* Read the 16 data bits. */
892 for (i = 16; i > 0; i--) {
893 outl(0, mdio_addr);
894 mdio_delay();
895 retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
896 outl(MDC, mdio_addr);
897 mdio_delay();
898 }
899 outl(0x00, mdio_addr);
900
901 return retval;
902}
903
904/**
905 * mdio_write - write MII PHY register
906 * @net_dev: the net device to write
907 * @phy_id: the phy address to write
908 * @location: the phy regiester id to write
909 * @value: the register value to write with
910 *
911 * Write MII registers with @value through MDIO and MDC
912 * using MDIO management frame structure and protocol(defined by ISO/IEC)
913 * please see SiS7014 or ICS spec
914 */
915
916static void mdio_write(struct net_device *net_dev, int phy_id, int location,
917 int value)
918{
919 long mdio_addr = net_dev->base_addr + mear;
920 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
921 int i;
922
923 mdio_reset(mdio_addr);
924 mdio_idle(mdio_addr);
925
926 /* Shift the command bits out. */
927 for (i = 15; i >= 0; i--) {
928 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
929 outb(dataval, mdio_addr);
930 mdio_delay();
931 outb(dataval | MDC, mdio_addr);
932 mdio_delay();
933 }
934 mdio_delay();
935
936 /* Shift the value bits out. */
937 for (i = 15; i >= 0; i--) {
938 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
939 outl(dataval, mdio_addr);
940 mdio_delay();
941 outl(dataval | MDC, mdio_addr);
942 mdio_delay();
943 }
944 mdio_delay();
945
946 /* Clear out extra bits. */
947 for (i = 2; i > 0; i--) {
948 outb(0, mdio_addr);
949 mdio_delay();
950 outb(MDC, mdio_addr);
951 mdio_delay();
952 }
953 outl(0x00, mdio_addr);
954
955 return;
956}
957
958
959/**
960 * sis900_reset_phy - reset sis900 mii phy.
961 * @net_dev: the net device to write
962 * @phy_addr: default phy address
963 *
964 * Some specific phy can't work properly without reset.
965 * This function will be called during initialization and
966 * link status change from ON to DOWN.
967 */
968
969static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
970{
Andrew Mortonf3be9742007-03-06 02:41:55 -0800971 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972 u16 status;
973
Andrew Mortonf3be9742007-03-06 02:41:55 -0800974 for (i = 0; i < 2; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975 status = mdio_read(net_dev, phy_addr, MII_STATUS);
976
977 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400978
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979 return status;
980}
981
982#ifdef CONFIG_NET_POLL_CONTROLLER
983/*
984 * Polling 'interrupt' - used by things like netconsole to send skbs
985 * without having to re-enable interrupts. It's not called while
986 * the interrupt routine is executing.
987*/
988static void sis900_poll(struct net_device *dev)
989{
990 disable_irq(dev->irq);
David Howells7d12e782006-10-05 14:55:46 +0100991 sis900_interrupt(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700992 enable_irq(dev->irq);
993}
994#endif
995
996/**
997 * sis900_open - open sis900 device
998 * @net_dev: the net device to open
999 *
1000 * Do some initialization and start net interface.
1001 * enable interrupts and set sis900 timer.
1002 */
1003
1004static int
1005sis900_open(struct net_device *net_dev)
1006{
Wang Chen8f15ea42008-11-12 23:38:36 -08001007 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008 long ioaddr = net_dev->base_addr;
1009 int ret;
1010
1011 /* Soft reset the chip. */
1012 sis900_reset(net_dev);
1013
1014 /* Equalizer workaround Rule */
1015 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1016
Thomas Gleixner1fb9df52006-07-01 19:29:39 -07001017 ret = request_irq(net_dev->irq, &sis900_interrupt, IRQF_SHARED,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018 net_dev->name, net_dev);
1019 if (ret)
1020 return ret;
1021
1022 sis900_init_rxfilter(net_dev);
1023
1024 sis900_init_tx_ring(net_dev);
1025 sis900_init_rx_ring(net_dev);
1026
1027 set_rx_mode(net_dev);
1028
1029 netif_start_queue(net_dev);
1030
1031 /* Workaround for EDB */
1032 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1033
1034 /* Enable all known interrupts by setting the interrupt mask. */
1035 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1036 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
1037 outl(IE, ioaddr + ier);
1038
1039 sis900_check_mode(net_dev, sis_priv->mii);
1040
1041 /* Set the timer to switch to check for link beat and perhaps switch
1042 to an alternate media type. */
1043 init_timer(&sis_priv->timer);
1044 sis_priv->timer.expires = jiffies + HZ;
1045 sis_priv->timer.data = (unsigned long)net_dev;
1046 sis_priv->timer.function = &sis900_timer;
1047 add_timer(&sis_priv->timer);
1048
1049 return 0;
1050}
1051
1052/**
1053 * sis900_init_rxfilter - Initialize the Rx filter
1054 * @net_dev: the net device to initialize for
1055 *
1056 * Set receive filter address to our MAC address
1057 * and enable packet filtering.
1058 */
1059
1060static void
1061sis900_init_rxfilter (struct net_device * net_dev)
1062{
Wang Chen8f15ea42008-11-12 23:38:36 -08001063 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064 long ioaddr = net_dev->base_addr;
1065 u32 rfcrSave;
1066 u32 i;
1067
1068 rfcrSave = inl(rfcr + ioaddr);
1069
1070 /* disable packet filtering before setting filter */
1071 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
1072
1073 /* load MAC addr to filter data register */
1074 for (i = 0 ; i < 3 ; i++) {
1075 u32 w;
1076
1077 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1078 outl((i << RFADDR_shift), ioaddr + rfcr);
1079 outl(w, ioaddr + rfdr);
1080
1081 if (netif_msg_hw(sis_priv)) {
1082 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1083 net_dev->name, i, inl(ioaddr + rfdr));
1084 }
1085 }
1086
1087 /* enable packet filtering */
1088 outl(rfcrSave | RFEN, rfcr + ioaddr);
1089}
1090
1091/**
1092 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1093 * @net_dev: the net device to initialize for
1094 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001095 * Initialize the Tx descriptor ring,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001096 */
1097
1098static void
1099sis900_init_tx_ring(struct net_device *net_dev)
1100{
Wang Chen8f15ea42008-11-12 23:38:36 -08001101 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102 long ioaddr = net_dev->base_addr;
1103 int i;
1104
1105 sis_priv->tx_full = 0;
1106 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1107
1108 for (i = 0; i < NUM_TX_DESC; i++) {
1109 sis_priv->tx_skbuff[i] = NULL;
1110
1111 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1112 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1113 sis_priv->tx_ring[i].cmdsts = 0;
1114 sis_priv->tx_ring[i].bufptr = 0;
1115 }
1116
1117 /* load Transmit Descriptor Register */
1118 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1119 if (netif_msg_hw(sis_priv))
1120 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1121 net_dev->name, inl(ioaddr + txdp));
1122}
1123
1124/**
1125 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1126 * @net_dev: the net device to initialize for
1127 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001128 * Initialize the Rx descriptor ring,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129 * and pre-allocate recevie buffers (socket buffer)
1130 */
1131
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001132static void
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133sis900_init_rx_ring(struct net_device *net_dev)
1134{
Wang Chen8f15ea42008-11-12 23:38:36 -08001135 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136 long ioaddr = net_dev->base_addr;
1137 int i;
1138
1139 sis_priv->cur_rx = 0;
1140 sis_priv->dirty_rx = 0;
1141
1142 /* init RX descriptor */
1143 for (i = 0; i < NUM_RX_DESC; i++) {
1144 sis_priv->rx_skbuff[i] = NULL;
1145
1146 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1147 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1148 sis_priv->rx_ring[i].cmdsts = 0;
1149 sis_priv->rx_ring[i].bufptr = 0;
1150 }
1151
1152 /* allocate sock buffers */
1153 for (i = 0; i < NUM_RX_DESC; i++) {
1154 struct sk_buff *skb;
1155
1156 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1157 /* not enough memory for skbuff, this makes a "hole"
1158 on the buffer ring, it is not clear how the
1159 hardware will react to this kind of degenerated
1160 buffer */
1161 break;
1162 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001163 sis_priv->rx_skbuff[i] = skb;
1164 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1165 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
David S. Miller689be432005-06-28 15:25:31 -07001166 skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001167 }
1168 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1169
1170 /* load Receive Descriptor Register */
1171 outl(sis_priv->rx_ring_dma, ioaddr + rxdp);
1172 if (netif_msg_hw(sis_priv))
1173 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1174 net_dev->name, inl(ioaddr + rxdp));
1175}
1176
1177/**
1178 * sis630_set_eq - set phy equalizer value for 630 LAN
1179 * @net_dev: the net device to set equalizer value
1180 * @revision: 630 LAN revision number
1181 *
1182 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1183 * PHY register 14h(Test)
1184 * Bit 14: 0 -- Automatically dectect (default)
1185 * 1 -- Manually set Equalizer filter
1186 * Bit 13: 0 -- (Default)
1187 * 1 -- Speed up convergence of equalizer setting
1188 * Bit 9 : 0 -- (Default)
1189 * 1 -- Disable Baseline Wander
1190 * Bit 3~7 -- Equalizer filter setting
1191 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1192 * Then calculate equalizer value
1193 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1194 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1195 * Calculate Equalizer value:
1196 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-dectect proper equalizer value.
1197 * When the equalizer is stable, this value is not a fixed value. It will be within
1198 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1199 * 0 <= max <= 4 --> set equalizer to max
1200 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1201 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1202 */
1203
1204static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1205{
Wang Chen8f15ea42008-11-12 23:38:36 -08001206 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1208 int i, maxcount=10;
1209
1210 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1211 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1212 return;
1213
1214 if (netif_carrier_ok(net_dev)) {
1215 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1216 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1217 (0x2200 | reg14h) & 0xBFFF);
1218 for (i=0; i < maxcount; i++) {
1219 eq_value = (0x00F8 & mdio_read(net_dev,
1220 sis_priv->cur_phy, MII_RESV)) >> 3;
1221 if (i == 0)
1222 max_value=min_value=eq_value;
1223 max_value = (eq_value > max_value) ?
1224 eq_value : max_value;
1225 min_value = (eq_value < min_value) ?
1226 eq_value : min_value;
1227 }
1228 /* 630E rule to determine the equalizer value */
1229 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1230 revision == SIS630ET_900_REV) {
1231 if (max_value < 5)
1232 eq_value = max_value;
1233 else if (max_value >= 5 && max_value < 15)
1234 eq_value = (max_value == min_value) ?
1235 max_value+2 : max_value+1;
1236 else if (max_value >= 15)
1237 eq_value=(max_value == min_value) ?
1238 max_value+6 : max_value+5;
1239 }
1240 /* 630B0&B1 rule to determine the equalizer value */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001241 if (revision == SIS630A_900_REV &&
1242 (sis_priv->host_bridge_rev == SIS630B0 ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243 sis_priv->host_bridge_rev == SIS630B1)) {
1244 if (max_value == 0)
1245 eq_value = 3;
1246 else
1247 eq_value = (max_value + min_value + 1)/2;
1248 }
1249 /* write equalizer value and setting */
1250 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1251 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1252 reg14h = (reg14h | 0x6000) & 0xFDFF;
1253 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1254 } else {
1255 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001256 if (revision == SIS630A_900_REV &&
1257 (sis_priv->host_bridge_rev == SIS630B0 ||
1258 sis_priv->host_bridge_rev == SIS630B1))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1260 (reg14h | 0x2200) & 0xBFFF);
1261 else
1262 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1263 (reg14h | 0x2000) & 0xBFFF);
1264 }
1265 return;
1266}
1267
1268/**
1269 * sis900_timer - sis900 timer routine
1270 * @data: pointer to sis900 net device
1271 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001272 * On each timer ticks we check two things,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273 * link status (ON/OFF) and link mode (10/100/Full/Half)
1274 */
1275
1276static void sis900_timer(unsigned long data)
1277{
1278 struct net_device *net_dev = (struct net_device *)data;
Wang Chen8f15ea42008-11-12 23:38:36 -08001279 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280 struct mii_phy *mii_phy = sis_priv->mii;
Arjan van de Venf71e1302006-03-03 21:33:57 -05001281 static const int next_tick = 5*HZ;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001282 u16 status;
1283
1284 if (!sis_priv->autong_complete){
Ingo Molnaref0cd872008-11-25 16:52:13 -08001285 int uninitialized_var(speed), duplex = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286
1287 sis900_read_mode(net_dev, &speed, &duplex);
1288 if (duplex){
1289 sis900_set_mode(net_dev->base_addr, speed, duplex);
1290 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1291 netif_start_queue(net_dev);
1292 }
1293
1294 sis_priv->timer.expires = jiffies + HZ;
1295 add_timer(&sis_priv->timer);
1296 return;
1297 }
1298
1299 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1300 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1301
1302 /* Link OFF -> ON */
1303 if (!netif_carrier_ok(net_dev)) {
1304 LookForLink:
1305 /* Search for new PHY */
1306 status = sis900_default_phy(net_dev);
1307 mii_phy = sis_priv->mii;
1308
1309 if (status & MII_STAT_LINK){
1310 sis900_check_mode(net_dev, mii_phy);
1311 netif_carrier_on(net_dev);
1312 }
1313 } else {
1314 /* Link ON -> OFF */
1315 if (!(status & MII_STAT_LINK)){
1316 netif_carrier_off(net_dev);
1317 if(netif_msg_link(sis_priv))
1318 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1319
1320 /* Change mode issue */
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001321 if ((mii_phy->phy_id0 == 0x001D) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1323 sis900_reset_phy(net_dev, sis_priv->cur_phy);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001324
Linus Torvalds1da177e2005-04-16 15:20:36 -07001325 sis630_set_eq(net_dev, sis_priv->chipset_rev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001326
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327 goto LookForLink;
1328 }
1329 }
1330
1331 sis_priv->timer.expires = jiffies + next_tick;
1332 add_timer(&sis_priv->timer);
1333}
1334
1335/**
1336 * sis900_check_mode - check the media mode for sis900
1337 * @net_dev: the net device to be checked
1338 * @mii_phy: the mii phy
1339 *
1340 * Older driver gets the media mode from mii status output
1341 * register. Now we set our media capability and auto-negotiate
1342 * to get the upper bound of speed and duplex between two ends.
1343 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1344 * and autong_complete should be set to 1.
1345 */
1346
1347static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1348{
Wang Chen8f15ea42008-11-12 23:38:36 -08001349 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350 long ioaddr = net_dev->base_addr;
1351 int speed, duplex;
1352
1353 if (mii_phy->phy_types == LAN) {
1354 outl(~EXD & inl(ioaddr + cfg), ioaddr + cfg);
1355 sis900_set_capability(net_dev , mii_phy);
1356 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1357 } else {
1358 outl(EXD | inl(ioaddr + cfg), ioaddr + cfg);
1359 speed = HW_SPEED_HOME;
1360 duplex = FDX_CAPABLE_HALF_SELECTED;
1361 sis900_set_mode(ioaddr, speed, duplex);
1362 sis_priv->autong_complete = 1;
1363 }
1364}
1365
1366/**
1367 * sis900_set_mode - Set the media mode of mac register.
1368 * @ioaddr: the address of the device
1369 * @speed : the transmit speed to be determined
1370 * @duplex: the duplex mode to be determined
1371 *
1372 * Set the media mode of mac register txcfg/rxcfg according to
1373 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1374 * bus is used instead of PCI bus. When this bit is set 1, the
1375 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1376 * double words.
1377 */
1378
1379static void sis900_set_mode (long ioaddr, int speed, int duplex)
1380{
1381 u32 tx_flags = 0, rx_flags = 0;
1382
1383 if (inl(ioaddr + cfg) & EDB_MASTER_EN) {
1384 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1385 (TX_FILL_THRESH << TxFILLT_shift);
1386 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1387 } else {
1388 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1389 (TX_FILL_THRESH << TxFILLT_shift);
1390 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1391 }
1392
1393 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1394 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1395 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1396 } else {
1397 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1398 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1399 }
1400
1401 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1402 tx_flags |= (TxCSI | TxHBI);
1403 rx_flags |= RxATX;
1404 }
1405
Daniele Venzanod269a692006-04-17 10:28:06 +02001406#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1407 /* Can accept Jumbo packet */
1408 rx_flags |= RxAJAB;
1409#endif
1410
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411 outl (tx_flags, ioaddr + txcfg);
1412 outl (rx_flags, ioaddr + rxcfg);
1413}
1414
1415/**
1416 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1417 * @net_dev: the net device to read mode for
1418 * @phy_addr: mii phy address
1419 *
1420 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1421 * autong_complete should be set to 0 when starting auto-negotiation.
1422 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1423 * sis900_timer will wait for link on again if autong_complete = 0.
1424 */
1425
1426static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1427{
Wang Chen8f15ea42008-11-12 23:38:36 -08001428 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429 int i = 0;
1430 u32 status;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001431
Andrew Mortonf3be9742007-03-06 02:41:55 -08001432 for (i = 0; i < 2; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1434
1435 if (!(status & MII_STAT_LINK)){
1436 if(netif_msg_link(sis_priv))
1437 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1438 sis_priv->autong_complete = 1;
1439 netif_carrier_off(net_dev);
1440 return;
1441 }
1442
1443 /* (Re)start AutoNegotiate */
1444 mdio_write(net_dev, phy_addr, MII_CONTROL,
1445 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1446 sis_priv->autong_complete = 0;
1447}
1448
1449
1450/**
1451 * sis900_read_mode - read media mode for sis900 internal phy
1452 * @net_dev: the net device to read mode for
1453 * @speed : the transmit speed to be determined
1454 * @duplex : the duplex mode to be determined
1455 *
1456 * The capability of remote end will be put in mii register autorec
1457 * after auto-negotiation. Use AND operation to get the upper bound
1458 * of speed and duplex between two ends.
1459 */
1460
1461static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1462{
Wang Chen8f15ea42008-11-12 23:38:36 -08001463 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 struct mii_phy *phy = sis_priv->mii;
1465 int phy_addr = sis_priv->cur_phy;
1466 u32 status;
1467 u16 autoadv, autorec;
Andrew Mortonf3be9742007-03-06 02:41:55 -08001468 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001469
Andrew Mortonf3be9742007-03-06 02:41:55 -08001470 for (i = 0; i < 2; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001471 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1472
1473 if (!(status & MII_STAT_LINK))
1474 return;
1475
1476 /* AutoNegotiate completed */
1477 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1478 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1479 status = autoadv & autorec;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001480
Linus Torvalds1da177e2005-04-16 15:20:36 -07001481 *speed = HW_SPEED_10_MBPS;
1482 *duplex = FDX_CAPABLE_HALF_SELECTED;
1483
1484 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1485 *speed = HW_SPEED_100_MBPS;
1486 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1487 *duplex = FDX_CAPABLE_FULL_SELECTED;
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001488
Linus Torvalds1da177e2005-04-16 15:20:36 -07001489 sis_priv->autong_complete = 1;
1490
1491 /* Workaround for Realtek RTL8201 PHY issue */
1492 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1493 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1494 *duplex = FDX_CAPABLE_FULL_SELECTED;
1495 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1496 *speed = HW_SPEED_100_MBPS;
1497 }
1498
1499 if(netif_msg_link(sis_priv))
1500 printk(KERN_INFO "%s: Media Link On %s %s-duplex \n",
1501 net_dev->name,
1502 *speed == HW_SPEED_100_MBPS ?
1503 "100mbps" : "10mbps",
1504 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1505 "full" : "half");
1506}
1507
1508/**
1509 * sis900_tx_timeout - sis900 transmit timeout routine
1510 * @net_dev: the net device to transmit
1511 *
1512 * print transmit timeout status
1513 * disable interrupts and do some tasks
1514 */
1515
1516static void sis900_tx_timeout(struct net_device *net_dev)
1517{
Wang Chen8f15ea42008-11-12 23:38:36 -08001518 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001519 long ioaddr = net_dev->base_addr;
1520 unsigned long flags;
1521 int i;
1522
1523 if(netif_msg_tx_err(sis_priv))
1524 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x \n",
1525 net_dev->name, inl(ioaddr + cr), inl(ioaddr + isr));
1526
1527 /* Disable interrupts by clearing the interrupt mask. */
1528 outl(0x0000, ioaddr + imr);
1529
1530 /* use spinlock to prevent interrupt handler accessing buffer ring */
1531 spin_lock_irqsave(&sis_priv->lock, flags);
1532
1533 /* discard unsent packets */
1534 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1535 for (i = 0; i < NUM_TX_DESC; i++) {
1536 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1537
1538 if (skb) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001539 pci_unmap_single(sis_priv->pci_dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001540 sis_priv->tx_ring[i].bufptr, skb->len,
1541 PCI_DMA_TODEVICE);
1542 dev_kfree_skb_irq(skb);
1543 sis_priv->tx_skbuff[i] = NULL;
1544 sis_priv->tx_ring[i].cmdsts = 0;
1545 sis_priv->tx_ring[i].bufptr = 0;
Jeff Garzik09f75cd2007-10-03 17:41:50 -07001546 net_dev->stats.tx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001547 }
1548 }
1549 sis_priv->tx_full = 0;
1550 netif_wake_queue(net_dev);
1551
1552 spin_unlock_irqrestore(&sis_priv->lock, flags);
1553
1554 net_dev->trans_start = jiffies;
1555
1556 /* load Transmit Descriptor Register */
1557 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1558
1559 /* Enable all known interrupts by setting the interrupt mask. */
1560 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1561 return;
1562}
1563
1564/**
1565 * sis900_start_xmit - sis900 start transmit routine
1566 * @skb: socket buffer pointer to put the data being transmitted
1567 * @net_dev: the net device to transmit with
1568 *
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001569 * Set the transmit buffer descriptor,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001570 * and write TxENA to enable transmit state machine.
1571 * tell upper layer if the buffer is full
1572 */
1573
1574static int
1575sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1576{
Wang Chen8f15ea42008-11-12 23:38:36 -08001577 struct sis900_private *sis_priv = netdev_priv(net_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001578 long ioaddr = net_dev->base_addr;
1579 unsigned int entry;
1580 unsigned long flags;
1581 unsigned int index_cur_tx, index_dirty_tx;
1582 unsigned int count_dirty_tx;
1583
1584 /* Don't transmit data before the complete of auto-negotiation */
1585 if(!sis_priv->autong_complete){
1586 netif_stop_queue(net_dev);
Patrick McHardy5b548142009-06-12 06:22:29 +00001587 return NETDEV_TX_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001588 }
1589
1590 spin_lock_irqsave(&sis_priv->lock, flags);
1591
1592 /* Calculate the next Tx descriptor entry. */
1593 entry = sis_priv->cur_tx % NUM_TX_DESC;
1594 sis_priv->tx_skbuff[entry] = skb;
1595
1596 /* set the transmit buffer descriptor and enable Transmit State Machine */
1597 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1598 skb->data, skb->len, PCI_DMA_TODEVICE);
1599 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1600 outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
1601
1602 sis_priv->cur_tx ++;
1603 index_cur_tx = sis_priv->cur_tx;
1604 index_dirty_tx = sis_priv->dirty_tx;
1605
1606 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1607 count_dirty_tx ++;
1608
1609 if (index_cur_tx == index_dirty_tx) {
1610 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1611 sis_priv->tx_full = 1;
1612 netif_stop_queue(net_dev);
Jeff Garzik6aa20a22006-09-13 13:24:59 -04001613 } else if (count_dirty_tx < NUM_TX_DESC) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001614 /* Typical path, tell upper layer that more transmission is possible */
1615 netif_start_queue(net_dev);
1616 } else {
1617 /* buffer full, tell upper layer no more transmission */
1618 sis_priv->tx_full = 1;
1619 netif_stop_queue(net_dev);
1620 }
1621
1622 spin_unlock_irqrestore(&sis_priv->lock, flags);
1623
1624 net_dev->trans_start = jiffies;
1625
1626 if (netif_msg_tx_queued(sis_priv))
1627 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1628 "to slot %d.\n",
1629 net_dev->name, skb->data, (int)skb->len, entry);
1630
1631 return 0;
1632}
1633
1634/**
1635 * sis900_interrupt - sis900 interrupt handler
1636 * @irq: the irq number
1637 * @dev_instance: the client data object
Linus Torvalds1da177e2005-04-16 15:20:36 -07001638 *
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