1 /* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
2 Copyright 1999 Silicon Integrated System Corporation
3 Revision: 1.08.08 Jan. 22 2005
5 Modified from the driver which is originally written by Donald Becker.
7 This software may be used and distributed according to the terms
8 of the GNU General Public License (GPL), incorporated herein by reference.
9 Drivers based on this skeleton fall under the GPL and must retain
10 the authorship (implicit copyright) notice.
13 SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
14 preliminary Rev. 1.0 Jan. 14, 1998
15 SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
16 preliminary Rev. 1.0 Nov. 10, 1998
17 SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
18 preliminary Rev. 1.0 Jan. 18, 1998
20 Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages
21 Rev 1.08.07 Nov. 2 2003 Daniele Venzano <webvenza@libero.it> add suspend/resume support
22 Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support
23 Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary
24 Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support
25 Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function
26 Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem
27 Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY
28 Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix
29 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
30 Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support
31 Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup
32 Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support
33 Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix
34 Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning
35 Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig
36 Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support
37 Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E eqaulizer workaround rule
38 Rev 1.07.01 Aug. 08 2000 Ollie Lho minor update for SiS 630E and SiS 630E A1
39 Rev 1.07 Mar. 07 2000 Ollie Lho bug fix in Rx buffer ring
40 Rev 1.06.04 Feb. 11 2000 Jeff Garzik <jgarzik@pobox.com> softnet and init for kernel 2.4
41 Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release
42 Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed
43 Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com)
44 Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release
45 Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx
46 Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support
47 Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release
50 #include <linux/module.h>
51 #include <linux/moduleparam.h>
52 #include <linux/kernel.h>
53 #include <linux/string.h>
54 #include <linux/timer.h>
55 #include <linux/errno.h>
56 #include <linux/ioport.h>
57 #include <linux/slab.h>
58 #include <linux/interrupt.h>
59 #include <linux/pci.h>
60 #include <linux/netdevice.h>
61 #include <linux/init.h>
62 #include <linux/mii.h>
63 #include <linux/etherdevice.h>
64 #include <linux/skbuff.h>
65 #include <linux/delay.h>
66 #include <linux/ethtool.h>
67 #include <linux/crc32.h>
68 #include <linux/bitops.h>
70 #include <asm/processor.h> /* Processor type for cache alignment. */
73 #include <asm/uaccess.h> /* User space memory access functions */
77 #define SIS900_MODULE_NAME "sis900"
78 #define SIS900_DRV_VERSION "v1.08.08 Jan. 22 2005"
80 static char version[] __devinitdata =
81 KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
83 static int max_interrupt_work = 40;
84 static int multicast_filter_limit = 128;
86 static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
88 #define SIS900_DEF_MSG \
94 /* Time in jiffies before concluding the transmitter is hung. */
95 #define TX_TIMEOUT (4*HZ)
96 /* SiS 900 is capable of 32 bits BM DMA */
97 #define SIS900_DMA_MASK 0xffffffff
103 static char * card_names[] = {
104 "SiS 900 PCI Fast Ethernet",
105 "SiS 7016 PCI Fast Ethernet"
107 static struct pci_device_id sis900_pci_tbl [] = {
108 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900,
109 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900},
110 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016,
111 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016},
114 MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
116 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
118 static struct mii_chip_info {
127 } mii_chip_table[] = {
128 { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
129 { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
130 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
131 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
132 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
133 { "ICS LAN PHY", 0x0015, 0xF440, LAN },
134 { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
135 { "NS 83847 PHY", 0x2000, 0x5C30, MIX },
136 { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
137 { "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
142 struct mii_phy * next;
150 typedef struct _BufferDesc {
156 struct sis900_private {
157 struct net_device_stats stats;
158 struct pci_dev * pci_dev;
162 struct mii_phy * mii;
163 struct mii_phy * first_mii; /* record the first mii structure */
164 unsigned int cur_phy;
166 struct timer_list timer; /* Link status detection timer. */
167 u8 autong_complete; /* 1: auto-negotiate complete */
171 unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
172 unsigned int cur_tx, dirty_tx;
174 /* The saved address of a sent/receive-in-place packet buffer */
175 struct sk_buff *tx_skbuff[NUM_TX_DESC];
176 struct sk_buff *rx_skbuff[NUM_RX_DESC];
180 dma_addr_t tx_ring_dma;
181 dma_addr_t rx_ring_dma;
183 unsigned int tx_full; /* The Tx queue is full. */
188 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
189 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
190 MODULE_LICENSE("GPL");
192 module_param(multicast_filter_limit, int, 0444);
193 module_param(max_interrupt_work, int, 0444);
194 module_param(sis900_debug, int, 0444);
195 MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
196 MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
197 MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
199 #ifdef CONFIG_NET_POLL_CONTROLLER
200 static void sis900_poll(struct net_device *dev);
202 static int sis900_open(struct net_device *net_dev);
203 static int sis900_mii_probe (struct net_device * net_dev);
204 static void sis900_init_rxfilter (struct net_device * net_dev);
205 static u16 read_eeprom(long ioaddr, int location);
206 static u16 mdio_read(struct net_device *net_dev, int phy_id, int location);
207 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
208 static void sis900_timer(unsigned long data);
209 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
210 static void sis900_tx_timeout(struct net_device *net_dev);
211 static void sis900_init_tx_ring(struct net_device *net_dev);
212 static void sis900_init_rx_ring(struct net_device *net_dev);
213 static int sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
214 static int sis900_rx(struct net_device *net_dev);
215 static void sis900_finish_xmit (struct net_device *net_dev);
216 static irqreturn_t sis900_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
217 static int sis900_close(struct net_device *net_dev);
218 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
219 static struct net_device_stats *sis900_get_stats(struct net_device *net_dev);
220 static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
221 static void set_rx_mode(struct net_device *net_dev);
222 static void sis900_reset(struct net_device *net_dev);
223 static void sis630_set_eq(struct net_device *net_dev, u8 revision);
224 static int sis900_set_config(struct net_device *dev, struct ifmap *map);
225 static u16 sis900_default_phy(struct net_device * net_dev);
226 static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
227 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
228 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
229 static void sis900_set_mode (long ioaddr, int speed, int duplex);
230 static struct ethtool_ops sis900_ethtool_ops;
233 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
234 * @pci_dev: the sis900 pci device
235 * @net_dev: the net device to get address for
237 * Older SiS900 and friends, use EEPROM to store MAC address.
238 * MAC address is read from read_eeprom() into @net_dev->dev_addr.
241 static int __devinit sis900_get_mac_addr(struct pci_dev * pci_dev, struct net_device *net_dev)
243 long ioaddr = pci_resource_start(pci_dev, 0);
247 /* check to see if we have sane EEPROM */
248 signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
249 if (signature == 0xffff || signature == 0x0000) {
250 printk (KERN_WARNING "%s: Error EERPOM read %x\n",
251 pci_name(pci_dev), signature);
255 /* get MAC address from EEPROM */
256 for (i = 0; i < 3; i++)
257 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
263 * sis630e_get_mac_addr - Get MAC address for SiS630E model
264 * @pci_dev: the sis900 pci device
265 * @net_dev: the net device to get address for
267 * SiS630E model, use APC CMOS RAM to store MAC address.
268 * APC CMOS RAM is accessed through ISA bridge.
269 * MAC address is read into @net_dev->dev_addr.
272 static int __devinit sis630e_get_mac_addr(struct pci_dev * pci_dev,
273 struct net_device *net_dev)
275 struct pci_dev *isa_bridge = NULL;
279 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
281 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
283 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
287 pci_read_config_byte(isa_bridge, 0x48, ®);
288 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
290 for (i = 0; i < 6; i++) {
291 outb(0x09 + i, 0x70);
292 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
294 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
295 pci_dev_put(isa_bridge);
302 * sis635_get_mac_addr - Get MAC address for SIS635 model
303 * @pci_dev: the sis900 pci device
304 * @net_dev: the net device to get address for
306 * SiS635 model, set MAC Reload Bit to load Mac address from APC
307 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
308 * @net_dev->dev_addr.
311 static int __devinit sis635_get_mac_addr(struct pci_dev * pci_dev,
312 struct net_device *net_dev)
314 long ioaddr = net_dev->base_addr;
318 rfcrSave = inl(rfcr + ioaddr);
320 outl(rfcrSave | RELOAD, ioaddr + cr);
321 outl(0, ioaddr + cr);
323 /* disable packet filtering before setting filter */
324 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
326 /* load MAC addr to filter data register */
327 for (i = 0 ; i < 3 ; i++) {
328 outl((i << RFADDR_shift), ioaddr + rfcr);
329 *( ((u16 *)net_dev->dev_addr) + i) = inw(ioaddr + rfdr);
332 /* enable packet filtering */
333 outl(rfcrSave | RFEN, rfcr + ioaddr);
339 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
340 * @pci_dev: the sis900 pci device
341 * @net_dev: the net device to get address for
343 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
345 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
346 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
347 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
348 * EEDONE signal to refuse EEPROM access by LAN.
349 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
350 * The signature field in SiS962 or SiS963 spec is meaningless.
351 * MAC address is read into @net_dev->dev_addr.
354 static int __devinit sis96x_get_mac_addr(struct pci_dev * pci_dev,
355 struct net_device *net_dev)
357 long ioaddr = net_dev->base_addr;
358 long ee_addr = ioaddr + mear;
362 outl(EEREQ, ee_addr);
363 while(waittime < 2000) {
364 if(inl(ee_addr) & EEGNT) {
366 /* get MAC address from EEPROM */
367 for (i = 0; i < 3; i++)
368 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
370 outl(EEDONE, ee_addr);
377 outl(EEDONE, ee_addr);
382 * sis900_probe - Probe for sis900 device
383 * @pci_dev: the sis900 pci device
384 * @pci_id: the pci device ID
386 * Check and probe sis900 net device for @pci_dev.
387 * Get mac address according to the chip revision,
388 * and assign SiS900-specific entries in the device structure.
389 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
392 static int __devinit sis900_probe(struct pci_dev *pci_dev,
393 const struct pci_device_id *pci_id)
395 struct sis900_private *sis_priv;
396 struct net_device *net_dev;
402 char *card_name = card_names[pci_id->driver_data];
403 const char *dev_name = pci_name(pci_dev);
405 /* when built into the kernel, we only print version if device is found */
407 static int printed_version;
408 if (!printed_version++)
412 /* setup various bits in PCI command register */
413 ret = pci_enable_device(pci_dev);
416 i = pci_set_dma_mask(pci_dev, SIS900_DMA_MASK);
418 printk(KERN_ERR "sis900.c: architecture does not support"
419 "32bit PCI busmaster DMA\n");
423 pci_set_master(pci_dev);
425 net_dev = alloc_etherdev(sizeof(struct sis900_private));
428 SET_MODULE_OWNER(net_dev);
429 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
431 /* We do a request_region() to register /proc/ioports info. */
432 ioaddr = pci_resource_start(pci_dev, 0);
433 ret = pci_request_regions(pci_dev, "sis900");
437 sis_priv = net_dev->priv;
438 net_dev->base_addr = ioaddr;
439 net_dev->irq = pci_dev->irq;
440 sis_priv->pci_dev = pci_dev;
441 spin_lock_init(&sis_priv->lock);
443 pci_set_drvdata(pci_dev, net_dev);
445 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
448 goto err_out_cleardev;
450 sis_priv->tx_ring = (BufferDesc *)ring_space;
451 sis_priv->tx_ring_dma = ring_dma;
453 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
458 sis_priv->rx_ring = (BufferDesc *)ring_space;
459 sis_priv->rx_ring_dma = ring_dma;
461 /* The SiS900-specific entries in the device structure. */
462 net_dev->open = &sis900_open;
463 net_dev->hard_start_xmit = &sis900_start_xmit;
464 net_dev->stop = &sis900_close;
465 net_dev->get_stats = &sis900_get_stats;
466 net_dev->set_config = &sis900_set_config;
467 net_dev->set_multicast_list = &set_rx_mode;
468 net_dev->do_ioctl = &mii_ioctl;
469 net_dev->tx_timeout = sis900_tx_timeout;
470 net_dev->watchdog_timeo = TX_TIMEOUT;
471 net_dev->ethtool_ops = &sis900_ethtool_ops;
473 #ifdef CONFIG_NET_POLL_CONTROLLER
474 net_dev->poll_controller = &sis900_poll;
477 if (sis900_debug > 0)
478 sis_priv->msg_enable = sis900_debug;
480 sis_priv->msg_enable = SIS900_DEF_MSG;
482 /* Get Mac address according to the chip revision */
483 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &(sis_priv->chipset_rev));
484 if(netif_msg_probe(sis_priv))
485 printk(KERN_DEBUG "%s: detected revision %2.2x, "
486 "trying to get MAC address...\n",
487 dev_name, sis_priv->chipset_rev);
490 if (sis_priv->chipset_rev == SIS630E_900_REV)
491 ret = sis630e_get_mac_addr(pci_dev, net_dev);
492 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
493 ret = sis635_get_mac_addr(pci_dev, net_dev);
494 else if (sis_priv->chipset_rev == SIS96x_900_REV)
495 ret = sis96x_get_mac_addr(pci_dev, net_dev);
497 ret = sis900_get_mac_addr(pci_dev, net_dev);
500 printk(KERN_WARNING "%s: Cannot read MAC address.\n", dev_name);
505 /* 630ET : set the mii access mode as software-mode */
506 if (sis_priv->chipset_rev == SIS630ET_900_REV)
507 outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
509 /* probe for mii transceiver */
510 if (sis900_mii_probe(net_dev) == 0) {
511 printk(KERN_WARNING "%s: Error probing MII device.\n",
517 /* save our host bridge revision */
518 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
520 pci_read_config_byte(dev, PCI_CLASS_REVISION, &sis_priv->host_bridge_rev);
524 ret = register_netdev(net_dev);
528 /* print some information about our NIC */
529 printk(KERN_INFO "%s: %s at %#lx, IRQ %d, ", net_dev->name,
530 card_name, ioaddr, net_dev->irq);
531 for (i = 0; i < 5; i++)
532 printk("%2.2x:", (u8)net_dev->dev_addr[i]);
533 printk("%2.2x.\n", net_dev->dev_addr[i]);
538 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
539 sis_priv->rx_ring_dma);
541 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
542 sis_priv->tx_ring_dma);
544 pci_set_drvdata(pci_dev, NULL);
545 pci_release_regions(pci_dev);
547 free_netdev(net_dev);
552 * sis900_mii_probe - Probe MII PHY for sis900
553 * @net_dev: the net device to probe for
555 * Search for total of 32 possible mii phy addresses.
556 * Identify and set current phy if found one,
557 * return error if it failed to found.
560 static int __init sis900_mii_probe(struct net_device * net_dev)
562 struct sis900_private * sis_priv = net_dev->priv;
563 const char *dev_name = pci_name(sis_priv->pci_dev);
564 u16 poll_bit = MII_STAT_LINK, status = 0;
565 unsigned long timeout = jiffies + 5 * HZ;
568 sis_priv->mii = NULL;
570 /* search for total of 32 possible mii phy addresses */
571 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
572 struct mii_phy * mii_phy = NULL;
577 for(i = 0; i < 2; i++)
578 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
580 if (mii_status == 0xffff || mii_status == 0x0000) {
581 if (netif_msg_probe(sis_priv))
582 printk(KERN_DEBUG "%s: MII at address %d"
588 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
589 printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n");
590 mii_phy = sis_priv->first_mii;
594 mii_phy = mii_phy->next;
600 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
601 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
602 mii_phy->phy_addr = phy_addr;
603 mii_phy->status = mii_status;
604 mii_phy->next = sis_priv->mii;
605 sis_priv->mii = mii_phy;
606 sis_priv->first_mii = mii_phy;
608 for (i = 0; mii_chip_table[i].phy_id1; i++)
609 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
610 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
611 mii_phy->phy_types = mii_chip_table[i].phy_types;
612 if (mii_chip_table[i].phy_types == MIX)
614 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
615 printk(KERN_INFO "%s: %s transceiver found "
618 mii_chip_table[i].name,
623 if( !mii_chip_table[i].phy_id1 ) {
624 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
626 mii_phy->phy_types = UNKNOWN;
630 if (sis_priv->mii == NULL) {
631 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
635 /* select default PHY for mac */
636 sis_priv->mii = NULL;
637 sis900_default_phy( net_dev );
639 /* Reset phy if default phy is internal sis900 */
640 if ((sis_priv->mii->phy_id0 == 0x001D) &&
641 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
642 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
644 /* workaround for ICS1893 PHY */
645 if ((sis_priv->mii->phy_id0 == 0x0015) &&
646 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
647 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
649 if(status & MII_STAT_LINK){
653 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
654 if (time_after_eq(jiffies, timeout)) {
655 printk(KERN_WARNING "%s: reset phy and link down now\n",
662 if (sis_priv->chipset_rev == SIS630E_900_REV) {
663 /* SiS 630E has some bugs on default value of PHY registers */
664 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
665 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
666 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
667 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
668 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
671 if (sis_priv->mii->status & MII_STAT_LINK)
672 netif_carrier_on(net_dev);
674 netif_carrier_off(net_dev);
680 * sis900_default_phy - Select default PHY for sis900 mac.
681 * @net_dev: the net device to probe for
683 * Select first detected PHY with link as default.
684 * If no one is link on, select PHY whose types is HOME as default.
685 * If HOME doesn't exist, select LAN.
688 static u16 sis900_default_phy(struct net_device * net_dev)
690 struct sis900_private * sis_priv = net_dev->priv;
691 struct mii_phy *phy = NULL, *phy_home = NULL,
692 *default_phy = NULL, *phy_lan = NULL;
695 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
696 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
697 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
699 /* Link ON & Not select default PHY & not ghost PHY */
700 if ((status & MII_STAT_LINK) && !default_phy &&
701 (phy->phy_types != UNKNOWN))
704 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
705 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
706 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
707 if (phy->phy_types == HOME)
709 else if(phy->phy_types == LAN)
714 if (!default_phy && phy_home)
715 default_phy = phy_home;
716 else if (!default_phy && phy_lan)
717 default_phy = phy_lan;
718 else if (!default_phy)
719 default_phy = sis_priv->first_mii;
721 if (sis_priv->mii != default_phy) {
722 sis_priv->mii = default_phy;
723 sis_priv->cur_phy = default_phy->phy_addr;
724 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
725 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
728 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
729 status &= (~MII_CNTL_ISOLATE);
731 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
732 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
733 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
740 * sis900_set_capability - set the media capability of network adapter.
741 * @net_dev : the net device to probe for
744 * Set the media capability of network adapter according to
745 * mii status register. It's necessary before auto-negotiate.
748 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
753 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
754 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
756 cap = MII_NWAY_CSMA_CD |
757 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
758 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
759 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
760 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
762 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
766 /* Delay between EEPROM clock transitions. */
767 #define eeprom_delay() inl(ee_addr)
770 * read_eeprom - Read Serial EEPROM
771 * @ioaddr: base i/o address
772 * @location: the EEPROM location to read
774 * Read Serial EEPROM through EEPROM Access Register.
775 * Note that location is in word (16 bits) unit
778 static u16 __devinit read_eeprom(long ioaddr, int location)
782 long ee_addr = ioaddr + mear;
783 u32 read_cmd = location | EEread;
790 /* Shift the read command (9) bits out. */
791 for (i = 8; i >= 0; i--) {
792 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
793 outl(dataval, ee_addr);
795 outl(dataval | EECLK, ee_addr);
801 /* read the 16-bits data in */
802 for (i = 16; i > 0; i--) {
805 outl(EECS | EECLK, ee_addr);
807 retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
811 /* Terminate the EEPROM access. */
818 /* Read and write the MII management registers using software-generated
819 serial MDIO protocol. Note that the command bits and data bits are
820 send out separately */
821 #define mdio_delay() inl(mdio_addr)
823 static void mdio_idle(long mdio_addr)
825 outl(MDIO | MDDIR, mdio_addr);
827 outl(MDIO | MDDIR | MDC, mdio_addr);
830 /* Syncronize the MII management interface by shifting 32 one bits out. */
831 static void mdio_reset(long mdio_addr)
835 for (i = 31; i >= 0; i--) {
836 outl(MDDIR | MDIO, mdio_addr);
838 outl(MDDIR | MDIO | MDC, mdio_addr);
845 * mdio_read - read MII PHY register
846 * @net_dev: the net device to read
847 * @phy_id: the phy address to read
848 * @location: the phy regiester id to read
850 * Read MII registers through MDIO and MDC
851 * using MDIO management frame structure and protocol(defined by ISO/IEC).
852 * Please see SiS7014 or ICS spec
855 static u16 mdio_read(struct net_device *net_dev, int phy_id, int location)
857 long mdio_addr = net_dev->base_addr + mear;
858 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
862 mdio_reset(mdio_addr);
863 mdio_idle(mdio_addr);
865 for (i = 15; i >= 0; i--) {
866 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
867 outl(dataval, mdio_addr);
869 outl(dataval | MDC, mdio_addr);
873 /* Read the 16 data bits. */
874 for (i = 16; i > 0; i--) {
877 retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
878 outl(MDC, mdio_addr);
881 outl(0x00, mdio_addr);
887 * mdio_write - write MII PHY register
888 * @net_dev: the net device to write
889 * @phy_id: the phy address to write
890 * @location: the phy regiester id to write
891 * @value: the register value to write with
893 * Write MII registers with @value through MDIO and MDC
894 * using MDIO management frame structure and protocol(defined by ISO/IEC)
895 * please see SiS7014 or ICS spec
898 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
901 long mdio_addr = net_dev->base_addr + mear;
902 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
905 mdio_reset(mdio_addr);
906 mdio_idle(mdio_addr);
908 /* Shift the command bits out. */
909 for (i = 15; i >= 0; i--) {
910 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
911 outb(dataval, mdio_addr);
913 outb(dataval | MDC, mdio_addr);
918 /* Shift the value bits out. */
919 for (i = 15; i >= 0; i--) {
920 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
921 outl(dataval, mdio_addr);
923 outl(dataval | MDC, mdio_addr);
928 /* Clear out extra bits. */
929 for (i = 2; i > 0; i--) {
932 outb(MDC, mdio_addr);
935 outl(0x00, mdio_addr);
942 * sis900_reset_phy - reset sis900 mii phy.
943 * @net_dev: the net device to write
944 * @phy_addr: default phy address
946 * Some specific phy can't work properly without reset.
947 * This function will be called during initialization and
948 * link status change from ON to DOWN.
951 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
957 status = mdio_read(net_dev, phy_addr, MII_STATUS);
959 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
964 #ifdef CONFIG_NET_POLL_CONTROLLER
966 * Polling 'interrupt' - used by things like netconsole to send skbs
967 * without having to re-enable interrupts. It's not called while
968 * the interrupt routine is executing.
970 static void sis900_poll(struct net_device *dev)
972 disable_irq(dev->irq);
973 sis900_interrupt(dev->irq, dev, NULL);
974 enable_irq(dev->irq);
979 * sis900_open - open sis900 device
980 * @net_dev: the net device to open
982 * Do some initialization and start net interface.
983 * enable interrupts and set sis900 timer.
987 sis900_open(struct net_device *net_dev)
989 struct sis900_private *sis_priv = net_dev->priv;
990 long ioaddr = net_dev->base_addr;
993 /* Soft reset the chip. */
994 sis900_reset(net_dev);
996 /* Equalizer workaround Rule */
997 sis630_set_eq(net_dev, sis_priv->chipset_rev);
999 ret = request_irq(net_dev->irq, &sis900_interrupt, SA_SHIRQ,
1000 net_dev->name, net_dev);
1004 sis900_init_rxfilter(net_dev);
1006 sis900_init_tx_ring(net_dev);
1007 sis900_init_rx_ring(net_dev);
1009 set_rx_mode(net_dev);
1011 netif_start_queue(net_dev);
1013 /* Workaround for EDB */
1014 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1016 /* Enable all known interrupts by setting the interrupt mask. */
1017 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1018 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
1019 outl(IE, ioaddr + ier);
1021 sis900_check_mode(net_dev, sis_priv->mii);
1023 /* Set the timer to switch to check for link beat and perhaps switch
1024 to an alternate media type. */
1025 init_timer(&sis_priv->timer);
1026 sis_priv->timer.expires = jiffies + HZ;
1027 sis_priv->timer.data = (unsigned long)net_dev;
1028 sis_priv->timer.function = &sis900_timer;
1029 add_timer(&sis_priv->timer);
1035 * sis900_init_rxfilter - Initialize the Rx filter
1036 * @net_dev: the net device to initialize for
1038 * Set receive filter address to our MAC address
1039 * and enable packet filtering.
1043 sis900_init_rxfilter (struct net_device * net_dev)
1045 struct sis900_private *sis_priv = net_dev->priv;
1046 long ioaddr = net_dev->base_addr;
1050 rfcrSave = inl(rfcr + ioaddr);
1052 /* disable packet filtering before setting filter */
1053 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
1055 /* load MAC addr to filter data register */
1056 for (i = 0 ; i < 3 ; i++) {
1059 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1060 outl((i << RFADDR_shift), ioaddr + rfcr);
1061 outl(w, ioaddr + rfdr);
1063 if (netif_msg_hw(sis_priv)) {
1064 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1065 net_dev->name, i, inl(ioaddr + rfdr));
1069 /* enable packet filtering */
1070 outl(rfcrSave | RFEN, rfcr + ioaddr);
1074 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1075 * @net_dev: the net device to initialize for
1077 * Initialize the Tx descriptor ring,
1081 sis900_init_tx_ring(struct net_device *net_dev)
1083 struct sis900_private *sis_priv = net_dev->priv;
1084 long ioaddr = net_dev->base_addr;
1087 sis_priv->tx_full = 0;
1088 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1090 for (i = 0; i < NUM_TX_DESC; i++) {
1091 sis_priv->tx_skbuff[i] = NULL;
1093 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1094 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1095 sis_priv->tx_ring[i].cmdsts = 0;
1096 sis_priv->tx_ring[i].bufptr = 0;
1099 /* load Transmit Descriptor Register */
1100 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1101 if (netif_msg_hw(sis_priv))
1102 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1103 net_dev->name, inl(ioaddr + txdp));
1107 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1108 * @net_dev: the net device to initialize for
1110 * Initialize the Rx descriptor ring,
1111 * and pre-allocate recevie buffers (socket buffer)
1115 sis900_init_rx_ring(struct net_device *net_dev)
1117 struct sis900_private *sis_priv = net_dev->priv;
1118 long ioaddr = net_dev->base_addr;
1121 sis_priv->cur_rx = 0;
1122 sis_priv->dirty_rx = 0;
1124 /* init RX descriptor */
1125 for (i = 0; i < NUM_RX_DESC; i++) {
1126 sis_priv->rx_skbuff[i] = NULL;
1128 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1129 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1130 sis_priv->rx_ring[i].cmdsts = 0;
1131 sis_priv->rx_ring[i].bufptr = 0;
1134 /* allocate sock buffers */
1135 for (i = 0; i < NUM_RX_DESC; i++) {
1136 struct sk_buff *skb;
1138 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1139 /* not enough memory for skbuff, this makes a "hole"
1140 on the buffer ring, it is not clear how the
1141 hardware will react to this kind of degenerated
1146 sis_priv->rx_skbuff[i] = skb;
1147 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1148 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
1149 skb->tail, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1151 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1153 /* load Receive Descriptor Register */
1154 outl(sis_priv->rx_ring_dma, ioaddr + rxdp);
1155 if (netif_msg_hw(sis_priv))
1156 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1157 net_dev->name, inl(ioaddr + rxdp));
1161 * sis630_set_eq - set phy equalizer value for 630 LAN
1162 * @net_dev: the net device to set equalizer value
1163 * @revision: 630 LAN revision number
1165 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1166 * PHY register 14h(Test)
1167 * Bit 14: 0 -- Automatically dectect (default)
1168 * 1 -- Manually set Equalizer filter
1169 * Bit 13: 0 -- (Default)
1170 * 1 -- Speed up convergence of equalizer setting
1171 * Bit 9 : 0 -- (Default)
1172 * 1 -- Disable Baseline Wander
1173 * Bit 3~7 -- Equalizer filter setting
1174 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1175 * Then calculate equalizer value
1176 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1177 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1178 * Calculate Equalizer value:
1179 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-dectect proper equalizer value.
1180 * When the equalizer is stable, this value is not a fixed value. It will be within
1181 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1182 * 0 <= max <= 4 --> set equalizer to max
1183 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1184 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1187 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1189 struct sis900_private *sis_priv = net_dev->priv;
1190 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1193 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1194 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1197 if (netif_carrier_ok(net_dev)) {
1198 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1199 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1200 (0x2200 | reg14h) & 0xBFFF);
1201 for (i=0; i < maxcount; i++) {
1202 eq_value = (0x00F8 & mdio_read(net_dev,
1203 sis_priv->cur_phy, MII_RESV)) >> 3;
1205 max_value=min_value=eq_value;
1206 max_value = (eq_value > max_value) ?
1207 eq_value : max_value;
1208 min_value = (eq_value < min_value) ?
1209 eq_value : min_value;
1211 /* 630E rule to determine the equalizer value */
1212 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1213 revision == SIS630ET_900_REV) {
1215 eq_value = max_value;
1216 else if (max_value >= 5 && max_value < 15)
1217 eq_value = (max_value == min_value) ?
1218 max_value+2 : max_value+1;
1219 else if (max_value >= 15)
1220 eq_value=(max_value == min_value) ?
1221 max_value+6 : max_value+5;
1223 /* 630B0&B1 rule to determine the equalizer value */
1224 if (revision == SIS630A_900_REV &&
1225 (sis_priv->host_bridge_rev == SIS630B0 ||
1226 sis_priv->host_bridge_rev == SIS630B1)) {
1230 eq_value = (max_value + min_value + 1)/2;
1232 /* write equalizer value and setting */
1233 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1234 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1235 reg14h = (reg14h | 0x6000) & 0xFDFF;
1236 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1238 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1239 if (revision == SIS630A_900_REV &&
1240 (sis_priv->host_bridge_rev == SIS630B0 ||
1241 sis_priv->host_bridge_rev == SIS630B1))
1242 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1243 (reg14h | 0x2200) & 0xBFFF);
1245 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1246 (reg14h | 0x2000) & 0xBFFF);
1252 * sis900_timer - sis900 timer routine
1253 * @data: pointer to sis900 net device
1255 * On each timer ticks we check two things,
1256 * link status (ON/OFF) and link mode (10/100/Full/Half)
1259 static void sis900_timer(unsigned long data)
1261 struct net_device *net_dev = (struct net_device *)data;
1262 struct sis900_private *sis_priv = net_dev->priv;
1263 struct mii_phy *mii_phy = sis_priv->mii;
1264 static int next_tick = 5*HZ;
1267 if (!sis_priv->autong_complete){
1268 int speed, duplex = 0;
1270 sis900_read_mode(net_dev, &speed, &duplex);
1272 sis900_set_mode(net_dev->base_addr, speed, duplex);
1273 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1274 netif_start_queue(net_dev);
1277 sis_priv->timer.expires = jiffies + HZ;
1278 add_timer(&sis_priv->timer);
1282 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1283 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1285 /* Link OFF -> ON */
1286 if (!netif_carrier_ok(net_dev)) {
1288 /* Search for new PHY */
1289 status = sis900_default_phy(net_dev);
1290 mii_phy = sis_priv->mii;
1292 if (status & MII_STAT_LINK){
1293 sis900_check_mode(net_dev, mii_phy);
1294 netif_carrier_on(net_dev);
1297 /* Link ON -> OFF */
1298 if (!(status & MII_STAT_LINK)){
1299 netif_carrier_off(net_dev);
1300 if(netif_msg_link(sis_priv))
1301 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1303 /* Change mode issue */
1304 if ((mii_phy->phy_id0 == 0x001D) &&
1305 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1306 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1308 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1314 sis_priv->timer.expires = jiffies + next_tick;
1315 add_timer(&sis_priv->timer);
1319 * sis900_check_mode - check the media mode for sis900
1320 * @net_dev: the net device to be checked
1321 * @mii_phy: the mii phy
1323 * Older driver gets the media mode from mii status output
1324 * register. Now we set our media capability and auto-negotiate
1325 * to get the upper bound of speed and duplex between two ends.
1326 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1327 * and autong_complete should be set to 1.
1330 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1332 struct sis900_private *sis_priv = net_dev->priv;
1333 long ioaddr = net_dev->base_addr;
1336 if (mii_phy->phy_types == LAN) {
1337 outl(~EXD & inl(ioaddr + cfg), ioaddr + cfg);
1338 sis900_set_capability(net_dev , mii_phy);
1339 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1341 outl(EXD | inl(ioaddr + cfg), ioaddr + cfg);
1342 speed = HW_SPEED_HOME;
1343 duplex = FDX_CAPABLE_HALF_SELECTED;
1344 sis900_set_mode(ioaddr, speed, duplex);
1345 sis_priv->autong_complete = 1;
1350 * sis900_set_mode - Set the media mode of mac register.
1351 * @ioaddr: the address of the device
1352 * @speed : the transmit speed to be determined
1353 * @duplex: the duplex mode to be determined
1355 * Set the media mode of mac register txcfg/rxcfg according to
1356 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1357 * bus is used instead of PCI bus. When this bit is set 1, the
1358 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1362 static void sis900_set_mode (long ioaddr, int speed, int duplex)
1364 u32 tx_flags = 0, rx_flags = 0;
1366 if (inl(ioaddr + cfg) & EDB_MASTER_EN) {
1367 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1368 (TX_FILL_THRESH << TxFILLT_shift);
1369 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1371 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1372 (TX_FILL_THRESH << TxFILLT_shift);
1373 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1376 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1377 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1378 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1380 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1381 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1384 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1385 tx_flags |= (TxCSI | TxHBI);
1389 outl (tx_flags, ioaddr + txcfg);
1390 outl (rx_flags, ioaddr + rxcfg);
1394 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1395 * @net_dev: the net device to read mode for
1396 * @phy_addr: mii phy address
1398 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1399 * autong_complete should be set to 0 when starting auto-negotiation.
1400 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1401 * sis900_timer will wait for link on again if autong_complete = 0.
1404 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1406 struct sis900_private *sis_priv = net_dev->priv;
1411 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1413 if (!(status & MII_STAT_LINK)){
1414 if(netif_msg_link(sis_priv))
1415 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1416 sis_priv->autong_complete = 1;
1417 netif_carrier_off(net_dev);
1421 /* (Re)start AutoNegotiate */
1422 mdio_write(net_dev, phy_addr, MII_CONTROL,
1423 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1424 sis_priv->autong_complete = 0;
1429 * sis900_read_mode - read media mode for sis900 internal phy
1430 * @net_dev: the net device to read mode for
1431 * @speed : the transmit speed to be determined
1432 * @duplex : the duplex mode to be determined
1434 * The capability of remote end will be put in mii register autorec
1435 * after auto-negotiation. Use AND operation to get the upper bound
1436 * of speed and duplex between two ends.
1439 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1441 struct sis900_private *sis_priv = net_dev->priv;
1442 struct mii_phy *phy = sis_priv->mii;
1443 int phy_addr = sis_priv->cur_phy;
1445 u16 autoadv, autorec;
1449 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1451 if (!(status & MII_STAT_LINK))
1454 /* AutoNegotiate completed */
1455 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1456 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1457 status = autoadv & autorec;
1459 *speed = HW_SPEED_10_MBPS;
1460 *duplex = FDX_CAPABLE_HALF_SELECTED;
1462 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1463 *speed = HW_SPEED_100_MBPS;
1464 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1465 *duplex = FDX_CAPABLE_FULL_SELECTED;
1467 sis_priv->autong_complete = 1;
1469 /* Workaround for Realtek RTL8201 PHY issue */
1470 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1471 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1472 *duplex = FDX_CAPABLE_FULL_SELECTED;
1473 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1474 *speed = HW_SPEED_100_MBPS;
1477 if(netif_msg_link(sis_priv))
1478 printk(KERN_INFO "%s: Media Link On %s %s-duplex \n",
1480 *speed == HW_SPEED_100_MBPS ?
1481 "100mbps" : "10mbps",
1482 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1487 * sis900_tx_timeout - sis900 transmit timeout routine
1488 * @net_dev: the net device to transmit
1490 * print transmit timeout status
1491 * disable interrupts and do some tasks
1494 static void sis900_tx_timeout(struct net_device *net_dev)
1496 struct sis900_private *sis_priv = net_dev->priv;
1497 long ioaddr = net_dev->base_addr;
1498 unsigned long flags;
1501 if(netif_msg_tx_err(sis_priv))
1502 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x \n",
1503 net_dev->name, inl(ioaddr + cr), inl(ioaddr + isr));
1505 /* Disable interrupts by clearing the interrupt mask. */
1506 outl(0x0000, ioaddr + imr);
1508 /* use spinlock to prevent interrupt handler accessing buffer ring */
1509 spin_lock_irqsave(&sis_priv->lock, flags);
1511 /* discard unsent packets */
1512 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1513 for (i = 0; i < NUM_TX_DESC; i++) {
1514 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1517 pci_unmap_single(sis_priv->pci_dev,
1518 sis_priv->tx_ring[i].bufptr, skb->len,
1520 dev_kfree_skb_irq(skb);
1521 sis_priv->tx_skbuff[i] = NULL;
1522 sis_priv->tx_ring[i].cmdsts = 0;
1523 sis_priv->tx_ring[i].bufptr = 0;
1524 sis_priv->stats.tx_dropped++;
1527 sis_priv->tx_full = 0;
1528 netif_wake_queue(net_dev);
1530 spin_unlock_irqrestore(&sis_priv->lock, flags);
1532 net_dev->trans_start = jiffies;
1534 /* load Transmit Descriptor Register */
1535 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1537 /* Enable all known interrupts by setting the interrupt mask. */
1538 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1543 * sis900_start_xmit - sis900 start transmit routine
1544 * @skb: socket buffer pointer to put the data being transmitted
1545 * @net_dev: the net device to transmit with
1547 * Set the transmit buffer descriptor,
1548 * and write TxENA to enable transmit state machine.
1549 * tell upper layer if the buffer is full
1553 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1555 struct sis900_private *sis_priv = net_dev->priv;
1556 long ioaddr = net_dev->base_addr;
1558 unsigned long flags;
1559 unsigned int index_cur_tx, index_dirty_tx;
1560 unsigned int count_dirty_tx;
1562 /* Don't transmit data before the complete of auto-negotiation */
1563 if(!sis_priv->autong_complete){
1564 netif_stop_queue(net_dev);
1568 spin_lock_irqsave(&sis_priv->lock, flags);
1570 /* Calculate the next Tx descriptor entry. */
1571 entry = sis_priv->cur_tx % NUM_TX_DESC;
1572 sis_priv->tx_skbuff[entry] = skb;
1574 /* set the transmit buffer descriptor and enable Transmit State Machine */
1575 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1576 skb->data, skb->len, PCI_DMA_TODEVICE);
1577 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1578 outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
1580 sis_priv->cur_tx ++;
1581 index_cur_tx = sis_priv->cur_tx;
1582 index_dirty_tx = sis_priv->dirty_tx;
1584 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1587 if (index_cur_tx == index_dirty_tx) {
1588 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1589 sis_priv->tx_full = 1;
1590 netif_stop_queue(net_dev);
1591 } else if (count_dirty_tx < NUM_TX_DESC) {
1592 /* Typical path, tell upper layer that more transmission is possible */
1593 netif_start_queue(net_dev);
1595 /* buffer full, tell upper layer no more transmission */
1596 sis_priv->tx_full = 1;
1597 netif_stop_queue(net_dev);
1600 spin_unlock_irqrestore(&sis_priv->lock, flags);
1602 net_dev->trans_start = jiffies;
1604 if (netif_msg_tx_queued(sis_priv))
1605 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1607 net_dev->name, skb->data, (int)skb->len, entry);
1613 * sis900_interrupt - sis900 interrupt handler
1614 * @irq: the irq number
1615 * @dev_instance: the client data object
1616 * @regs: snapshot of processor context
1618 * The interrupt handler does all of the Rx thread work,
1619 * and cleans up after the Tx thread
1622 static irqreturn_t sis900_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
1624 struct net_device *net_dev = dev_instance;
1625 struct sis900_private *sis_priv = net_dev->priv;
1626 int boguscnt = max_interrupt_work;
1627 long ioaddr = net_dev->base_addr;
1629 unsigned int handled = 0;
1631 spin_lock (&sis_priv->lock);
1634 status = inl(ioaddr + isr);
1636 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1637 /* nothing intresting happened */
1641 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1642 if (status & (RxORN | RxERR | RxOK))
1646 if (status & (TxURN | TxERR | TxIDLE))
1648 sis900_finish_xmit(net_dev);
1650 /* something strange happened !!! */
1651 if (status & HIBERR) {
1652 if(netif_msg_intr(sis_priv))
1653 printk(KERN_INFO "%s: Abnormal interrupt,"
1654 "status %#8.8x.\n", net_dev->name, status);
1657 if (--boguscnt < 0) {
1658 if(netif_msg_intr(sis_priv))
1659 printk(KERN_INFO "%s: Too much work at interrupt, "
1660 "interrupt status = %#8.8x.\n",
1661 net_dev->name, status);
1666 if(netif_msg_intr(sis_priv))
1667 printk(KERN_DEBUG "%s: exiting interrupt, "
1668 "interrupt status = 0x%#8.8x.\n",
1669 net_dev->name, inl(ioaddr + isr));
1671 spin_unlock (&sis_priv->lock);
1672 return IRQ_RETVAL(handled);
1676 * sis900_rx - sis900 receive routine
1677 * @net_dev: the net device which receives data
1679 * Process receive interrupt events,
1680 * put buffer to higher layer and refill buffer pool
1681 * Note: This fucntion is called by interrupt handler,
1682 * don't do "too much" work here
1685 static int sis900_rx(struct net_device *net_dev)
1687 struct sis900_private *sis_priv = net_dev->priv;
1688 long ioaddr = net_dev->base_addr;
1689 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1690 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1692 if (netif_msg_rx_status(sis_priv))
1693 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1695 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1697 while (rx_status & OWN) {
1698 unsigned int rx_size;
1700 rx_size = (rx_status & DSIZE) - CRC_SIZE;
1702 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1703 /* corrupted packet received */
1704 if (netif_msg_rx_err(sis_priv))
1705 printk(KERN_DEBUG "%s: Corrupted packet "
1706 "received, buffer status = 0x%8.8x.\n",
1707 net_dev->name, rx_status);
1708 sis_priv->stats.rx_errors++;
1709 if (rx_status & OVERRUN)
1710 sis_priv->stats.rx_over_errors++;
1711 if (rx_status & (TOOLONG|RUNT))
1712 sis_priv->stats.rx_length_errors++;
1713 if (rx_status & (RXISERR | FAERR))
1714 sis_priv->stats.rx_frame_errors++;
1715 if (rx_status & CRCERR)
1716 sis_priv->stats.rx_crc_errors++;
1717 /* reset buffer descriptor state */
1718 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1720 struct sk_buff * skb;
1722 /* This situation should never happen, but due to
1723 some unknow bugs, it is possible that
1724 we are working on NULL sk_buff :-( */
1725 if (sis_priv->rx_skbuff[entry] == NULL) {
1726 if (netif_msg_rx_err(sis_priv))
1727 printk(KERN_INFO "%s: NULL pointer "
1728 "encountered in Rx ring, skipping\n",
1733 pci_unmap_single(sis_priv->pci_dev,
1734 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1735 PCI_DMA_FROMDEVICE);
1736 /* give the socket buffer to upper layers */
1737 skb = sis_priv->rx_skbuff[entry];
1738 skb_put(skb, rx_size);
1739 skb->protocol = eth_type_trans(skb, net_dev);
1742 /* some network statistics */
1743 if ((rx_status & BCAST) == MCAST)
1744 sis_priv->stats.multicast++;
1745 net_dev->last_rx = jiffies;
1746 sis_priv->stats.rx_bytes += rx_size;
1747 sis_priv->stats.rx_packets++;
1749 /* refill the Rx buffer, what if there is not enought
1750 * memory for new socket buffer ?? */
1751 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1752 /* not enough memory for skbuff, this makes a
1753 * "hole" on the buffer ring, it is not clear
1754 * how the hardware will react to this kind
1755 * of degenerated buffer */
1756 if (netif_msg_rx_status(sis_priv))
1757 printk(KERN_INFO "%s: Memory squeeze,"
1758 "deferring packet.\n",
1760 sis_priv->rx_skbuff[entry] = NULL;
1761 /* reset buffer descriptor state */
1762 sis_priv->rx_ring[entry].cmdsts = 0;
1763 sis_priv->rx_ring[entry].bufptr = 0;
1764 sis_priv->stats.rx_dropped++;
1768 sis_priv->rx_skbuff[entry] = skb;
1769 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1770 sis_priv->rx_ring[entry].bufptr =
1771 pci_map_single(sis_priv->pci_dev, skb->tail,
1772 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1773 sis_priv->dirty_rx++;
1776 entry = sis_priv->cur_rx % NUM_RX_DESC;
1777 rx_status = sis_priv->rx_ring[entry].cmdsts;
1780 /* refill the Rx buffer, what if the rate of refilling is slower
1781 * than consuming ?? */
1782 for (;sis_priv->cur_rx - sis_priv->dirty_rx > 0; sis_priv->dirty_rx++) {
1783 struct sk_buff *skb;
1785 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1787 if (sis_priv->rx_skbuff[entry] == NULL) {
1788 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1789 /* not enough memory for skbuff, this makes a
1790 * "hole" on the buffer ring, it is not clear
1791 * how the hardware will react to this kind
1792 * of degenerated buffer */
1793 if (netif_msg_rx_err(sis_priv))
1794 printk(KERN_INFO "%s: Memory squeeze,"
1795 "deferring packet.\n",
1797 sis_priv->stats.rx_dropped++;
1801 sis_priv->rx_skbuff[entry] = skb;
1802 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1803 sis_priv->rx_ring[entry].bufptr =
1804 pci_map_single(sis_priv->pci_dev, skb->tail,
1805 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1808 /* re-enable the potentially idle receive state matchine */
1809 outl(RxENA | inl(ioaddr + cr), ioaddr + cr );
1815 * sis900_finish_xmit - finish up transmission of packets
1816 * @net_dev: the net device to be transmitted on
1818 * Check for error condition and free socket buffer etc
1819 * schedule for more transmission as needed
1820 * Note: This fucntion is called by interrupt handler,
1821 * don't do "too much" work here
1824 static void sis900_finish_xmit (struct net_device *net_dev)
1826 struct sis900_private *sis_priv = net_dev->priv;
1828 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1829 struct sk_buff *skb;
1833 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1834 tx_status = sis_priv->tx_ring[entry].cmdsts;
1836 if (tx_status & OWN) {
1837 /* The packet is not transmitted yet (owned by hardware) !
1838 * Note: the interrupt is generated only when Tx Machine
1839 * is idle, so this is an almost impossible case */
1843 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1844 /* packet unsuccessfully transmitted */
1845 if (netif_msg_tx_err(sis_priv))
1846 printk(KERN_DEBUG "%s: Transmit "
1847 "error, Tx status %8.8x.\n",
1848 net_dev->name, tx_status);
1849 sis_priv->stats.tx_errors++;
1850 if (tx_status & UNDERRUN)
1851 sis_priv->stats.tx_fifo_errors++;
1852 if (tx_status & ABORT)
1853 sis_priv->stats.tx_aborted_errors++;
1854 if (tx_status & NOCARRIER)
1855 sis_priv->stats.tx_carrier_errors++;
1856 if (tx_status & OWCOLL)
1857 sis_priv->stats.tx_window_errors++;
1859 /* packet successfully transmitted */
1860 sis_priv->stats.collisions += (tx_status & COLCNT) >> 16;
1861 sis_priv->stats.tx_bytes += tx_status & DSIZE;
1862 sis_priv->stats.tx_packets++;
1864 /* Free the original skb. */
1865 skb = sis_priv->tx_skbuff[entry];
1866 pci_unmap_single(sis_priv->pci_dev,
1867 sis_priv->tx_ring[entry].bufptr, skb->len,
1869 dev_kfree_skb_irq(skb);
1870 sis_priv->tx_skbuff[entry] = NULL;
1871 sis_priv->tx_ring[entry].bufptr = 0;
1872 sis_priv->tx_ring[entry].cmdsts = 0;
1875 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1876 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1877 /* The ring is no longer full, clear tx_full and schedule
1878 * more transmission by netif_wake_queue(net_dev) */
1879 sis_priv->tx_full = 0;
1880 netif_wake_queue (net_dev);
1885 * sis900_close - close sis900 device
1886 * @net_dev: the net device to be closed
1888 * Disable interrupts, stop the Tx and Rx Status Machine
1889 * free Tx and RX socket buffer
1892 static int sis900_close(struct net_device *net_dev)
1894 long ioaddr = net_dev->base_addr;
1895 struct sis900_private *sis_priv = net_dev->priv;
1896 struct sk_buff *skb;
1899 netif_stop_queue(net_dev);
1901 /* Disable interrupts by clearing the interrupt mask. */
1902 outl(0x0000, ioaddr + imr);
1903 outl(0x0000, ioaddr + ier);
1905 /* Stop the chip's Tx and Rx Status Machine */
1906 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
1908 del_timer(&sis_priv->timer);
1910 free_irq(net_dev->irq, net_dev);
1912 /* Free Tx and RX skbuff */
1913 for (i = 0; i < NUM_RX_DESC; i++) {
1914 skb = sis_priv->rx_skbuff[i];
1916 pci_unmap_single(sis_priv->pci_dev,
1917 sis_priv->rx_ring[i].bufptr,
1918 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1920 sis_priv->rx_skbuff[i] = NULL;
1923 for (i = 0; i < NUM_TX_DESC; i++) {
1924 skb = sis_priv->tx_skbuff[i];
1926 pci_unmap_single(sis_priv->pci_dev,
1927 sis_priv->tx_ring[i].bufptr, skb->len,
1930 sis_priv->tx_skbuff[i] = NULL;
1934 /* Green! Put the chip in low-power mode. */
1940 * sis900_get_drvinfo - Return information about driver
1941 * @net_dev: the net device to probe
1942 * @info: container for info returned
1944 * Process ethtool command such as "ehtool -i" to show information
1947 static void sis900_get_drvinfo(struct net_device *net_dev,
1948 struct ethtool_drvinfo *info)
1950 struct sis900_private *sis_priv = net_dev->priv;
1952 strcpy (info->driver, SIS900_MODULE_NAME);
1953 strcpy (info->version, SIS900_DRV_VERSION);
1954 strcpy (info->bus_info, pci_name(sis_priv->pci_dev));
1957 static u32 sis900_get_msglevel(struct net_device *net_dev)
1959 struct sis900_private *sis_priv = net_dev->priv;
1960 return sis_priv->msg_enable;
1963 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
1965 struct sis900_private *sis_priv = net_dev->priv;
1966 sis_priv->msg_enable = value;
1969 static struct ethtool_ops sis900_ethtool_ops = {
1970 .get_drvinfo = sis900_get_drvinfo,
1971 .get_msglevel = sis900_get_msglevel,
1972 .set_msglevel = sis900_set_msglevel,
1976 * mii_ioctl - process MII i/o control command
1977 * @net_dev: the net device to command for
1978 * @rq: parameter for command
1979 * @cmd: the i/o command
1981 * Process MII command like read/write MII register
1984 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
1986 struct sis900_private *sis_priv = net_dev->priv;
1987 struct mii_ioctl_data *data = if_mii(rq);
1990 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
1991 data->phy_id = sis_priv->mii->phy_addr;
1994 case SIOCGMIIREG: /* Read MII PHY register. */
1995 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
1998 case SIOCSMIIREG: /* Write MII PHY register. */
1999 if (!capable(CAP_NET_ADMIN))
2001 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2009 * sis900_get_stats - Get sis900 read/write statistics
2010 * @net_dev: the net device to get statistics for
2012 * get tx/rx statistics for sis900
2015 static struct net_device_stats *
2016 sis900_get_stats(struct net_device *net_dev)
2018 struct sis900_private *sis_priv = net_dev->priv;
2020 return &sis_priv->stats;
2024 * sis900_set_config - Set media type by net_device.set_config
2025 * @dev: the net device for media type change
2026 * @map: ifmap passed by ifconfig
2028 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2029 * we support only port changes. All other runtime configuration
2030 * changes will be ignored
2033 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2035 struct sis900_private *sis_priv = dev->priv;
2036 struct mii_phy *mii_phy = sis_priv->mii;
2040 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2041 /* we switch on the ifmap->port field. I couldn't find anything
2042 * like a definition or standard for the values of that field.
2043 * I think the meaning of those values is device specific. But
2044 * since I would like to change the media type via the ifconfig
2045 * command I use the definition from linux/netdevice.h
2046 * (which seems to be different from the ifport(pcmcia) definition) */
2048 case IF_PORT_UNKNOWN: /* use auto here */
2049 dev->if_port = map->port;
2050 /* we are going to change the media type, so the Link
2051 * will be temporary down and we need to reflect that
2052 * here. When the Link comes up again, it will be
2053 * sensed by the sis_timer procedure, which also does
2054 * all the rest for us */
2055 netif_carrier_off(dev);
2057 /* read current state */
2058 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2060 /* enable auto negotiation and reset the negotioation
2061 * (I don't really know what the auto negatiotiation
2062 * reset really means, but it sounds for me right to
2064 mdio_write(dev, mii_phy->phy_addr,
2065 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2069 case IF_PORT_10BASET: /* 10BaseT */
2070 dev->if_port = map->port;
2072 /* we are going to change the media type, so the Link
2073 * will be temporary down and we need to reflect that
2074 * here. When the Link comes up again, it will be
2075 * sensed by the sis_timer procedure, which also does
2076 * all the rest for us */
2077 netif_carrier_off(dev);
2079 /* set Speed to 10Mbps */
2080 /* read current state */
2081 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2083 /* disable auto negotiation and force 10MBit mode*/
2084 mdio_write(dev, mii_phy->phy_addr,
2085 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2089 case IF_PORT_100BASET: /* 100BaseT */
2090 case IF_PORT_100BASETX: /* 100BaseTx */
2091 dev->if_port = map->port;
2093 /* we are going to change the media type, so the Link
2094 * will be temporary down and we need to reflect that
2095 * here. When the Link comes up again, it will be
2096 * sensed by the sis_timer procedure, which also does
2097 * all the rest for us */
2098 netif_carrier_off(dev);
2100 /* set Speed to 100Mbps */
2101 /* disable auto negotiation and enable 100MBit Mode */
2102 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2103 mdio_write(dev, mii_phy->phy_addr,
2104 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2109 case IF_PORT_10BASE2: /* 10Base2 */
2110 case IF_PORT_AUI: /* AUI */
2111 case IF_PORT_100BASEFX: /* 100BaseFx */
2112 /* These Modes are not supported (are they?)*/
2124 * sis900_mcast_bitnr - compute hashtable index
2125 * @addr: multicast address
2126 * @revision: revision id of chip
2128 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2129 * hash table, which makes this function a little bit different from other drivers
2130 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2131 * multicast hash table.
2134 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2137 u32 crc = ether_crc(6, addr);
2139 /* leave 8 or 7 most siginifant bits */
2140 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2141 return ((int)(crc >> 24));
2143 return ((int)(crc >> 25));
2147 * set_rx_mode - Set SiS900 receive mode
2148 * @net_dev: the net device to be set
2150 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2151 * And set the appropriate multicast filter.
2152 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2155 static void set_rx_mode(struct net_device *net_dev)
2157 long ioaddr = net_dev->base_addr;
2158 struct sis900_private * sis_priv = net_dev->priv;
2159 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2160 int i, table_entries;
2163 /* 635 Hash Table entires = 256(2^16) */
2164 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2165 (sis_priv->chipset_rev == SIS900B_900_REV))
2170 if (net_dev->flags & IFF_PROMISC) {
2171 /* Accept any kinds of packets */
2172 rx_mode = RFPromiscuous;
2173 for (i = 0; i < table_entries; i++)
2174 mc_filter[i] = 0xffff;
2175 } else if ((net_dev->mc_count > multicast_filter_limit) ||
2176 (net_dev->flags & IFF_ALLMULTI)) {
2177 /* too many multicast addresses or accept all multicast packet */
2178 rx_mode = RFAAB | RFAAM;
2179 for (i = 0; i < table_entries; i++)
2180 mc_filter[i] = 0xffff;
2182 /* Accept Broadcast packet, destination address matchs our
2183 * MAC address, use Receive Filter to reject unwanted MCAST
2185 struct dev_mc_list *mclist;
2187 for (i = 0, mclist = net_dev->mc_list;
2188 mclist && i < net_dev->mc_count;
2189 i++, mclist = mclist->next) {
2190 unsigned int bit_nr =
2191 sis900_mcast_bitnr(mclist->dmi_addr, sis_priv->chipset_rev);
2192 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2196 /* update Multicast Hash Table in Receive Filter */
2197 for (i = 0; i < table_entries; i++) {
2198 /* why plus 0x04 ??, That makes the correct value for hash table. */
2199 outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr);
2200 outl(mc_filter[i], ioaddr + rfdr);
2203 outl(RFEN | rx_mode, ioaddr + rfcr);
2205 /* sis900 is capable of looping back packets at MAC level for
2206 * debugging purpose */
2207 if (net_dev->flags & IFF_LOOPBACK) {
2209 /* We must disable Tx/Rx before setting loopback mode */
2210 cr_saved = inl(ioaddr + cr);
2211 outl(cr_saved | TxDIS | RxDIS, ioaddr + cr);
2212 /* enable loopback */
2213 outl(inl(ioaddr + txcfg) | TxMLB, ioaddr + txcfg);
2214 outl(inl(ioaddr + rxcfg) | RxATX, ioaddr + rxcfg);
2216 outl(cr_saved, ioaddr + cr);
2223 * sis900_reset - Reset sis900 MAC
2224 * @net_dev: the net device to reset
2226 * reset sis900 MAC and wait until finished
2227 * reset through command register
2228 * change backoff algorithm for 900B0 & 635 M/B
2231 static void sis900_reset(struct net_device *net_dev)
2233 struct sis900_private * sis_priv = net_dev->priv;
2234 long ioaddr = net_dev->base_addr;
2236 u32 status = TxRCMP | RxRCMP;
2238 outl(0, ioaddr + ier);
2239 outl(0, ioaddr + imr);
2240 outl(0, ioaddr + rfcr);
2242 outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr);
2244 /* Check that the chip has finished the reset. */
2245 while (status && (i++ < 1000)) {
2246 status ^= (inl(isr + ioaddr) & status);
2249 if( (sis_priv->chipset_rev >= SIS635A_900_REV) ||
2250 (sis_priv->chipset_rev == SIS900B_900_REV) )
2251 outl(PESEL | RND_CNT, ioaddr + cfg);
2253 outl(PESEL, ioaddr + cfg);
2257 * sis900_remove - Remove sis900 device
2258 * @pci_dev: the pci device to be removed
2260 * remove and release SiS900 net device
2263 static void __devexit sis900_remove(struct pci_dev *pci_dev)
2265 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2266 struct sis900_private * sis_priv = net_dev->priv;
2267 struct mii_phy *phy = NULL;
2269 while (sis_priv->first_mii) {
2270 phy = sis_priv->first_mii;
2271 sis_priv->first_mii = phy->next;
2275 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2276 sis_priv->rx_ring_dma);
2277 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2278 sis_priv->tx_ring_dma);
2279 unregister_netdev(net_dev);
2280 free_netdev(net_dev);
2281 pci_release_regions(pci_dev);
2282 pci_set_drvdata(pci_dev, NULL);
2287 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2289 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2290 long ioaddr = net_dev->base_addr;
2292 if(!netif_running(net_dev))
2295 netif_stop_queue(net_dev);
2296 netif_device_detach(net_dev);
2298 /* Stop the chip's Tx and Rx Status Machine */
2299 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
2301 pci_set_power_state(pci_dev, PCI_D3hot);
2302 pci_save_state(pci_dev);
2307 static int sis900_resume(struct pci_dev *pci_dev)
2309 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2310 struct sis900_private *sis_priv = net_dev->priv;
2311 long ioaddr = net_dev->base_addr;
2313 if(!netif_running(net_dev))
2315 pci_restore_state(pci_dev);
2316 pci_set_power_state(pci_dev, PCI_D0);
2318 sis900_init_rxfilter(net_dev);
2320 sis900_init_tx_ring(net_dev);
2321 sis900_init_rx_ring(net_dev);
2323 set_rx_mode(net_dev);
2325 netif_device_attach(net_dev);
2326 netif_start_queue(net_dev);
2328 /* Workaround for EDB */
2329 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2331 /* Enable all known interrupts by setting the interrupt mask. */
2332 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
2333 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
2334 outl(IE, ioaddr + ier);
2336 sis900_check_mode(net_dev, sis_priv->mii);
2340 #endif /* CONFIG_PM */
2342 static struct pci_driver sis900_pci_driver = {
2343 .name = SIS900_MODULE_NAME,
2344 .id_table = sis900_pci_tbl,
2345 .probe = sis900_probe,
2346 .remove = __devexit_p(sis900_remove),
2348 .suspend = sis900_suspend,
2349 .resume = sis900_resume,
2350 #endif /* CONFIG_PM */
2353 static int __init sis900_init_module(void)
2355 /* when a module, this is printed whether or not devices are found in probe */
2360 return pci_module_init(&sis900_pci_driver);
2363 static void __exit sis900_cleanup_module(void)
2365 pci_unregister_driver(&sis900_pci_driver);
2368 module_init(sis900_init_module);
2369 module_exit(sis900_cleanup_module);