1 /* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
2 Copyright 1999 Silicon Integrated System Corporation
3 Revision: 1.08.10 Apr. 2 2006
5 Modified from the driver which is originally written by Donald Becker.
7 This software may be used and distributed according to the terms
8 of the GNU General Public License (GPL), incorporated herein by reference.
9 Drivers based on this skeleton fall under the GPL and must retain
10 the authorship (implicit copyright) notice.
13 SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
14 preliminary Rev. 1.0 Jan. 14, 1998
15 SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
16 preliminary Rev. 1.0 Nov. 10, 1998
17 SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
18 preliminary Rev. 1.0 Jan. 18, 1998
20 Rev 1.08.10 Apr. 2 2006 Daniele Venzano add vlan (jumbo packets) support
21 Rev 1.08.09 Sep. 19 2005 Daniele Venzano add Wake on LAN support
22 Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages
23 Rev 1.08.07 Nov. 2 2003 Daniele Venzano <venza@brownhat.org> add suspend/resume support
24 Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support
25 Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary
26 Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support
27 Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function
28 Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem
29 Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY
30 Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix
31 Rev 1.07.11 Apr. 2 2001 Hui-Fen Hsu updates PCI drivers to use the new pci_set_dma_mask for kernel 2.4.3
32 Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support
33 Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup
34 Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support
35 Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix
36 Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning
37 Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig
38 Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support
39 Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E 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
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>
71 #include <linux/dma-mapping.h>
73 #include <asm/processor.h> /* Processor type for cache alignment. */
76 #include <asm/uaccess.h> /* User space memory access functions */
80 #define SIS900_MODULE_NAME "sis900"
81 #define SIS900_DRV_VERSION "v1.08.10 Apr. 2 2006"
83 static char version[] __devinitdata =
84 KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
86 static int max_interrupt_work = 40;
87 static int multicast_filter_limit = 128;
89 static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
91 #define SIS900_DEF_MSG \
97 /* Time in jiffies before concluding the transmitter is hung. */
98 #define TX_TIMEOUT (4*HZ)
104 static const char * card_names[] = {
105 "SiS 900 PCI Fast Ethernet",
106 "SiS 7016 PCI Fast Ethernet"
108 static 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},
115 MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
117 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
119 static const struct mii_chip_info {
128 } mii_chip_table[] = {
129 { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
130 { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
131 { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
132 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
133 { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
134 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
135 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
136 { "ICS LAN PHY", 0x0015, 0xF440, LAN },
137 { "ICS LAN PHY", 0x0143, 0xBC70, LAN },
138 { "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 },
146 struct mii_phy * next;
154 typedef struct _BufferDesc {
160 struct sis900_private {
161 struct net_device_stats stats;
162 struct pci_dev * pci_dev;
166 struct mii_phy * mii;
167 struct mii_phy * first_mii; /* record the first mii structure */
168 unsigned int cur_phy;
169 struct mii_if_info mii_info;
171 struct timer_list timer; /* Link status detection timer. */
172 u8 autong_complete; /* 1: auto-negotiate complete */
176 unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
177 unsigned int cur_tx, dirty_tx;
179 /* The saved address of a sent/receive-in-place packet buffer */
180 struct sk_buff *tx_skbuff[NUM_TX_DESC];
181 struct sk_buff *rx_skbuff[NUM_RX_DESC];
185 dma_addr_t tx_ring_dma;
186 dma_addr_t rx_ring_dma;
188 unsigned int tx_full; /* The Tx queue is full. */
193 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
194 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
195 MODULE_LICENSE("GPL");
197 module_param(multicast_filter_limit, int, 0444);
198 module_param(max_interrupt_work, int, 0444);
199 module_param(sis900_debug, int, 0444);
200 MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
201 MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
202 MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
204 #ifdef CONFIG_NET_POLL_CONTROLLER
205 static void sis900_poll(struct net_device *dev);
207 static int sis900_open(struct net_device *net_dev);
208 static int sis900_mii_probe (struct net_device * net_dev);
209 static void sis900_init_rxfilter (struct net_device * net_dev);
210 static u16 read_eeprom(long ioaddr, int location);
211 static int mdio_read(struct net_device *net_dev, int phy_id, int location);
212 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
213 static void sis900_timer(unsigned long data);
214 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
215 static void sis900_tx_timeout(struct net_device *net_dev);
216 static void sis900_init_tx_ring(struct net_device *net_dev);
217 static void sis900_init_rx_ring(struct net_device *net_dev);
218 static int sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
219 static int sis900_rx(struct net_device *net_dev);
220 static void sis900_finish_xmit (struct net_device *net_dev);
221 static irqreturn_t sis900_interrupt(int irq, void *dev_instance);
222 static int sis900_close(struct net_device *net_dev);
223 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
224 static struct net_device_stats *sis900_get_stats(struct net_device *net_dev);
225 static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
226 static void set_rx_mode(struct net_device *net_dev);
227 static void sis900_reset(struct net_device *net_dev);
228 static void sis630_set_eq(struct net_device *net_dev, u8 revision);
229 static int sis900_set_config(struct net_device *dev, struct ifmap *map);
230 static u16 sis900_default_phy(struct net_device * net_dev);
231 static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
232 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
233 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
234 static void sis900_set_mode (long ioaddr, int speed, int duplex);
235 static const struct ethtool_ops sis900_ethtool_ops;
238 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
239 * @pci_dev: the sis900 pci device
240 * @net_dev: the net device to get address for
242 * Older SiS900 and friends, use EEPROM to store MAC address.
243 * MAC address is read from read_eeprom() into @net_dev->dev_addr.
246 static int __devinit sis900_get_mac_addr(struct pci_dev * pci_dev, struct net_device *net_dev)
248 long ioaddr = pci_resource_start(pci_dev, 0);
252 /* check to see if we have sane EEPROM */
253 signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
254 if (signature == 0xffff || signature == 0x0000) {
255 printk (KERN_WARNING "%s: Error EERPOM read %x\n",
256 pci_name(pci_dev), signature);
260 /* get MAC address from EEPROM */
261 for (i = 0; i < 3; i++)
262 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
268 * sis630e_get_mac_addr - Get MAC address for SiS630E model
269 * @pci_dev: the sis900 pci device
270 * @net_dev: the net device to get address for
272 * SiS630E model, use APC CMOS RAM to store MAC address.
273 * APC CMOS RAM is accessed through ISA bridge.
274 * MAC address is read into @net_dev->dev_addr.
277 static int __devinit sis630e_get_mac_addr(struct pci_dev * pci_dev,
278 struct net_device *net_dev)
280 struct pci_dev *isa_bridge = NULL;
284 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
286 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
288 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
292 pci_read_config_byte(isa_bridge, 0x48, ®);
293 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
295 for (i = 0; i < 6; i++) {
296 outb(0x09 + i, 0x70);
297 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
299 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
300 pci_dev_put(isa_bridge);
307 * sis635_get_mac_addr - Get MAC address for SIS635 model
308 * @pci_dev: the sis900 pci device
309 * @net_dev: the net device to get address for
311 * SiS635 model, set MAC Reload Bit to load Mac address from APC
312 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
313 * @net_dev->dev_addr.
316 static int __devinit sis635_get_mac_addr(struct pci_dev * pci_dev,
317 struct net_device *net_dev)
319 long ioaddr = net_dev->base_addr;
323 rfcrSave = inl(rfcr + ioaddr);
325 outl(rfcrSave | RELOAD, ioaddr + cr);
326 outl(0, ioaddr + cr);
328 /* disable packet filtering before setting filter */
329 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
331 /* load MAC addr to filter data register */
332 for (i = 0 ; i < 3 ; i++) {
333 outl((i << RFADDR_shift), ioaddr + rfcr);
334 *( ((u16 *)net_dev->dev_addr) + i) = inw(ioaddr + rfdr);
337 /* enable packet filtering */
338 outl(rfcrSave | RFEN, rfcr + ioaddr);
344 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
345 * @pci_dev: the sis900 pci device
346 * @net_dev: the net device to get address for
348 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
350 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
351 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
352 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
353 * EEDONE signal to refuse EEPROM access by LAN.
354 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
355 * The signature field in SiS962 or SiS963 spec is meaningless.
356 * MAC address is read into @net_dev->dev_addr.
359 static int __devinit sis96x_get_mac_addr(struct pci_dev * pci_dev,
360 struct net_device *net_dev)
362 long ioaddr = net_dev->base_addr;
363 long ee_addr = ioaddr + mear;
367 outl(EEREQ, ee_addr);
368 while(waittime < 2000) {
369 if(inl(ee_addr) & EEGNT) {
371 /* get MAC address from EEPROM */
372 for (i = 0; i < 3; i++)
373 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
375 outl(EEDONE, ee_addr);
382 outl(EEDONE, ee_addr);
387 * sis900_probe - Probe for sis900 device
388 * @pci_dev: the sis900 pci device
389 * @pci_id: the pci device ID
391 * Check and probe sis900 net device for @pci_dev.
392 * Get mac address according to the chip revision,
393 * and assign SiS900-specific entries in the device structure.
394 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
397 static int __devinit sis900_probe(struct pci_dev *pci_dev,
398 const struct pci_device_id *pci_id)
400 struct sis900_private *sis_priv;
401 struct net_device *net_dev;
407 const char *card_name = card_names[pci_id->driver_data];
408 const char *dev_name = pci_name(pci_dev);
410 /* when built into the kernel, we only print version if device is found */
412 static int printed_version;
413 if (!printed_version++)
417 /* setup various bits in PCI command register */
418 ret = pci_enable_device(pci_dev);
421 i = pci_set_dma_mask(pci_dev, DMA_32BIT_MASK);
423 printk(KERN_ERR "sis900.c: architecture does not support"
424 "32bit PCI busmaster DMA\n");
428 pci_set_master(pci_dev);
430 net_dev = alloc_etherdev(sizeof(struct sis900_private));
433 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
435 /* We do a request_region() to register /proc/ioports info. */
436 ioaddr = pci_resource_start(pci_dev, 0);
437 ret = pci_request_regions(pci_dev, "sis900");
441 sis_priv = net_dev->priv;
442 net_dev->base_addr = ioaddr;
443 net_dev->irq = pci_dev->irq;
444 sis_priv->pci_dev = pci_dev;
445 spin_lock_init(&sis_priv->lock);
447 pci_set_drvdata(pci_dev, net_dev);
449 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
452 goto err_out_cleardev;
454 sis_priv->tx_ring = (BufferDesc *)ring_space;
455 sis_priv->tx_ring_dma = ring_dma;
457 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
462 sis_priv->rx_ring = (BufferDesc *)ring_space;
463 sis_priv->rx_ring_dma = ring_dma;
465 /* The SiS900-specific entries in the device structure. */
466 net_dev->open = &sis900_open;
467 net_dev->hard_start_xmit = &sis900_start_xmit;
468 net_dev->stop = &sis900_close;
469 net_dev->get_stats = &sis900_get_stats;
470 net_dev->set_config = &sis900_set_config;
471 net_dev->set_multicast_list = &set_rx_mode;
472 net_dev->do_ioctl = &mii_ioctl;
473 net_dev->tx_timeout = sis900_tx_timeout;
474 net_dev->watchdog_timeo = TX_TIMEOUT;
475 net_dev->ethtool_ops = &sis900_ethtool_ops;
477 #ifdef CONFIG_NET_POLL_CONTROLLER
478 net_dev->poll_controller = &sis900_poll;
481 if (sis900_debug > 0)
482 sis_priv->msg_enable = sis900_debug;
484 sis_priv->msg_enable = SIS900_DEF_MSG;
486 sis_priv->mii_info.dev = net_dev;
487 sis_priv->mii_info.mdio_read = mdio_read;
488 sis_priv->mii_info.mdio_write = mdio_write;
489 sis_priv->mii_info.phy_id_mask = 0x1f;
490 sis_priv->mii_info.reg_num_mask = 0x1f;
492 /* Get Mac address according to the chip revision */
493 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &(sis_priv->chipset_rev));
494 if(netif_msg_probe(sis_priv))
495 printk(KERN_DEBUG "%s: detected revision %2.2x, "
496 "trying to get MAC address...\n",
497 dev_name, sis_priv->chipset_rev);
500 if (sis_priv->chipset_rev == SIS630E_900_REV)
501 ret = sis630e_get_mac_addr(pci_dev, net_dev);
502 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
503 ret = sis635_get_mac_addr(pci_dev, net_dev);
504 else if (sis_priv->chipset_rev == SIS96x_900_REV)
505 ret = sis96x_get_mac_addr(pci_dev, net_dev);
507 ret = sis900_get_mac_addr(pci_dev, net_dev);
510 printk(KERN_WARNING "%s: Cannot read MAC address.\n", dev_name);
515 /* 630ET : set the mii access mode as software-mode */
516 if (sis_priv->chipset_rev == SIS630ET_900_REV)
517 outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
519 /* probe for mii transceiver */
520 if (sis900_mii_probe(net_dev) == 0) {
521 printk(KERN_WARNING "%s: Error probing MII device.\n",
527 /* save our host bridge revision */
528 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
530 pci_read_config_byte(dev, PCI_CLASS_REVISION, &sis_priv->host_bridge_rev);
534 ret = register_netdev(net_dev);
538 /* print some information about our NIC */
539 printk(KERN_INFO "%s: %s at %#lx, IRQ %d, ", net_dev->name,
540 card_name, ioaddr, net_dev->irq);
541 for (i = 0; i < 5; i++)
542 printk("%2.2x:", (u8)net_dev->dev_addr[i]);
543 printk("%2.2x.\n", net_dev->dev_addr[i]);
545 /* Detect Wake on Lan support */
546 ret = (inl(net_dev->base_addr + CFGPMC) & PMESP) >> 27;
547 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
548 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
553 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
554 sis_priv->rx_ring_dma);
556 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
557 sis_priv->tx_ring_dma);
559 pci_set_drvdata(pci_dev, NULL);
560 pci_release_regions(pci_dev);
562 free_netdev(net_dev);
567 * sis900_mii_probe - Probe MII PHY for sis900
568 * @net_dev: the net device to probe for
570 * Search for total of 32 possible mii phy addresses.
571 * Identify and set current phy if found one,
572 * return error if it failed to found.
575 static int __devinit sis900_mii_probe(struct net_device * net_dev)
577 struct sis900_private * sis_priv = net_dev->priv;
578 const char *dev_name = pci_name(sis_priv->pci_dev);
579 u16 poll_bit = MII_STAT_LINK, status = 0;
580 unsigned long timeout = jiffies + 5 * HZ;
583 sis_priv->mii = NULL;
585 /* search for total of 32 possible mii phy addresses */
586 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
587 struct mii_phy * mii_phy = NULL;
592 for(i = 0; i < 2; i++)
593 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
595 if (mii_status == 0xffff || mii_status == 0x0000) {
596 if (netif_msg_probe(sis_priv))
597 printk(KERN_DEBUG "%s: MII at address %d"
603 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
604 printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n");
605 mii_phy = sis_priv->first_mii;
609 mii_phy = mii_phy->next;
615 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
616 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
617 mii_phy->phy_addr = phy_addr;
618 mii_phy->status = mii_status;
619 mii_phy->next = sis_priv->mii;
620 sis_priv->mii = mii_phy;
621 sis_priv->first_mii = mii_phy;
623 for (i = 0; mii_chip_table[i].phy_id1; i++)
624 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
625 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
626 mii_phy->phy_types = mii_chip_table[i].phy_types;
627 if (mii_chip_table[i].phy_types == MIX)
629 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
630 printk(KERN_INFO "%s: %s transceiver found "
633 mii_chip_table[i].name,
638 if( !mii_chip_table[i].phy_id1 ) {
639 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
641 mii_phy->phy_types = UNKNOWN;
645 if (sis_priv->mii == NULL) {
646 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
650 /* select default PHY for mac */
651 sis_priv->mii = NULL;
652 sis900_default_phy( net_dev );
654 /* Reset phy if default phy is internal sis900 */
655 if ((sis_priv->mii->phy_id0 == 0x001D) &&
656 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
657 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
659 /* workaround for ICS1893 PHY */
660 if ((sis_priv->mii->phy_id0 == 0x0015) &&
661 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
662 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
664 if(status & MII_STAT_LINK){
668 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
669 if (time_after_eq(jiffies, timeout)) {
670 printk(KERN_WARNING "%s: reset phy and link down now\n",
677 if (sis_priv->chipset_rev == SIS630E_900_REV) {
678 /* SiS 630E has some bugs on default value of PHY registers */
679 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
680 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
681 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
682 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
683 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
686 if (sis_priv->mii->status & MII_STAT_LINK)
687 netif_carrier_on(net_dev);
689 netif_carrier_off(net_dev);
695 * sis900_default_phy - Select default PHY for sis900 mac.
696 * @net_dev: the net device to probe for
698 * Select first detected PHY with link as default.
699 * If no one is link on, select PHY whose types is HOME as default.
700 * If HOME doesn't exist, select LAN.
703 static u16 sis900_default_phy(struct net_device * net_dev)
705 struct sis900_private * sis_priv = net_dev->priv;
706 struct mii_phy *phy = NULL, *phy_home = NULL,
707 *default_phy = NULL, *phy_lan = NULL;
710 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
711 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
712 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
714 /* Link ON & Not select default PHY & not ghost PHY */
715 if ((status & MII_STAT_LINK) && !default_phy &&
716 (phy->phy_types != UNKNOWN))
719 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
720 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
721 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
722 if (phy->phy_types == HOME)
724 else if(phy->phy_types == LAN)
729 if (!default_phy && phy_home)
730 default_phy = phy_home;
731 else if (!default_phy && phy_lan)
732 default_phy = phy_lan;
733 else if (!default_phy)
734 default_phy = sis_priv->first_mii;
736 if (sis_priv->mii != default_phy) {
737 sis_priv->mii = default_phy;
738 sis_priv->cur_phy = default_phy->phy_addr;
739 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
740 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
743 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
745 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
746 status &= (~MII_CNTL_ISOLATE);
748 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
749 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
750 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
757 * sis900_set_capability - set the media capability of network adapter.
758 * @net_dev : the net device to probe for
761 * Set the media capability of network adapter according to
762 * mii status register. It's necessary before auto-negotiate.
765 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
770 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
771 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
773 cap = MII_NWAY_CSMA_CD |
774 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
775 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
776 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
777 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
779 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
783 /* Delay between EEPROM clock transitions. */
784 #define eeprom_delay() inl(ee_addr)
787 * read_eeprom - Read Serial EEPROM
788 * @ioaddr: base i/o address
789 * @location: the EEPROM location to read
791 * Read Serial EEPROM through EEPROM Access Register.
792 * Note that location is in word (16 bits) unit
795 static u16 __devinit read_eeprom(long ioaddr, int location)
799 long ee_addr = ioaddr + mear;
800 u32 read_cmd = location | EEread;
807 /* Shift the read command (9) bits out. */
808 for (i = 8; i >= 0; i--) {
809 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
810 outl(dataval, ee_addr);
812 outl(dataval | EECLK, ee_addr);
818 /* read the 16-bits data in */
819 for (i = 16; i > 0; i--) {
822 outl(EECS | EECLK, ee_addr);
824 retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
828 /* Terminate the EEPROM access. */
835 /* Read and write the MII management registers using software-generated
836 serial MDIO protocol. Note that the command bits and data bits are
837 send out separately */
838 #define mdio_delay() inl(mdio_addr)
840 static void mdio_idle(long mdio_addr)
842 outl(MDIO | MDDIR, mdio_addr);
844 outl(MDIO | MDDIR | MDC, mdio_addr);
847 /* Syncronize the MII management interface by shifting 32 one bits out. */
848 static void mdio_reset(long mdio_addr)
852 for (i = 31; i >= 0; i--) {
853 outl(MDDIR | MDIO, mdio_addr);
855 outl(MDDIR | MDIO | MDC, mdio_addr);
862 * mdio_read - read MII PHY register
863 * @net_dev: the net device to read
864 * @phy_id: the phy address to read
865 * @location: the phy regiester id to read
867 * Read MII registers through MDIO and MDC
868 * using MDIO management frame structure and protocol(defined by ISO/IEC).
869 * Please see SiS7014 or ICS spec
872 static int mdio_read(struct net_device *net_dev, int phy_id, int location)
874 long mdio_addr = net_dev->base_addr + mear;
875 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
879 mdio_reset(mdio_addr);
880 mdio_idle(mdio_addr);
882 for (i = 15; i >= 0; i--) {
883 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
884 outl(dataval, mdio_addr);
886 outl(dataval | MDC, mdio_addr);
890 /* Read the 16 data bits. */
891 for (i = 16; i > 0; i--) {
894 retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
895 outl(MDC, mdio_addr);
898 outl(0x00, mdio_addr);
904 * mdio_write - write MII PHY register
905 * @net_dev: the net device to write
906 * @phy_id: the phy address to write
907 * @location: the phy regiester id to write
908 * @value: the register value to write with
910 * Write MII registers with @value through MDIO and MDC
911 * using MDIO management frame structure and protocol(defined by ISO/IEC)
912 * please see SiS7014 or ICS spec
915 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
918 long mdio_addr = net_dev->base_addr + mear;
919 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
922 mdio_reset(mdio_addr);
923 mdio_idle(mdio_addr);
925 /* Shift the command bits out. */
926 for (i = 15; i >= 0; i--) {
927 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
928 outb(dataval, mdio_addr);
930 outb(dataval | MDC, mdio_addr);
935 /* Shift the value bits out. */
936 for (i = 15; i >= 0; i--) {
937 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
938 outl(dataval, mdio_addr);
940 outl(dataval | MDC, mdio_addr);
945 /* Clear out extra bits. */
946 for (i = 2; i > 0; i--) {
949 outb(MDC, mdio_addr);
952 outl(0x00, mdio_addr);
959 * sis900_reset_phy - reset sis900 mii phy.
960 * @net_dev: the net device to write
961 * @phy_addr: default phy address
963 * Some specific phy can't work properly without reset.
964 * This function will be called during initialization and
965 * link status change from ON to DOWN.
968 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
973 for (i = 0; i < 2; i++)
974 status = mdio_read(net_dev, phy_addr, MII_STATUS);
976 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
981 #ifdef CONFIG_NET_POLL_CONTROLLER
983 * Polling 'interrupt' - used by things like netconsole to send skbs
984 * without having to re-enable interrupts. It's not called while
985 * the interrupt routine is executing.
987 static void sis900_poll(struct net_device *dev)
989 disable_irq(dev->irq);
990 sis900_interrupt(dev->irq, dev);
991 enable_irq(dev->irq);
996 * sis900_open - open sis900 device
997 * @net_dev: the net device to open
999 * Do some initialization and start net interface.
1000 * enable interrupts and set sis900 timer.
1004 sis900_open(struct net_device *net_dev)
1006 struct sis900_private *sis_priv = net_dev->priv;
1007 long ioaddr = net_dev->base_addr;
1010 /* Soft reset the chip. */
1011 sis900_reset(net_dev);
1013 /* Equalizer workaround Rule */
1014 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1016 ret = request_irq(net_dev->irq, &sis900_interrupt, IRQF_SHARED,
1017 net_dev->name, net_dev);
1021 sis900_init_rxfilter(net_dev);
1023 sis900_init_tx_ring(net_dev);
1024 sis900_init_rx_ring(net_dev);
1026 set_rx_mode(net_dev);
1028 netif_start_queue(net_dev);
1030 /* Workaround for EDB */
1031 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1033 /* Enable all known interrupts by setting the interrupt mask. */
1034 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1035 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
1036 outl(IE, ioaddr + ier);
1038 sis900_check_mode(net_dev, sis_priv->mii);
1040 /* Set the timer to switch to check for link beat and perhaps switch
1041 to an alternate media type. */
1042 init_timer(&sis_priv->timer);
1043 sis_priv->timer.expires = jiffies + HZ;
1044 sis_priv->timer.data = (unsigned long)net_dev;
1045 sis_priv->timer.function = &sis900_timer;
1046 add_timer(&sis_priv->timer);
1052 * sis900_init_rxfilter - Initialize the Rx filter
1053 * @net_dev: the net device to initialize for
1055 * Set receive filter address to our MAC address
1056 * and enable packet filtering.
1060 sis900_init_rxfilter (struct net_device * net_dev)
1062 struct sis900_private *sis_priv = net_dev->priv;
1063 long ioaddr = net_dev->base_addr;
1067 rfcrSave = inl(rfcr + ioaddr);
1069 /* disable packet filtering before setting filter */
1070 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
1072 /* load MAC addr to filter data register */
1073 for (i = 0 ; i < 3 ; i++) {
1076 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1077 outl((i << RFADDR_shift), ioaddr + rfcr);
1078 outl(w, ioaddr + rfdr);
1080 if (netif_msg_hw(sis_priv)) {
1081 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1082 net_dev->name, i, inl(ioaddr + rfdr));
1086 /* enable packet filtering */
1087 outl(rfcrSave | RFEN, rfcr + ioaddr);
1091 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1092 * @net_dev: the net device to initialize for
1094 * Initialize the Tx descriptor ring,
1098 sis900_init_tx_ring(struct net_device *net_dev)
1100 struct sis900_private *sis_priv = net_dev->priv;
1101 long ioaddr = net_dev->base_addr;
1104 sis_priv->tx_full = 0;
1105 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1107 for (i = 0; i < NUM_TX_DESC; i++) {
1108 sis_priv->tx_skbuff[i] = NULL;
1110 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1111 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1112 sis_priv->tx_ring[i].cmdsts = 0;
1113 sis_priv->tx_ring[i].bufptr = 0;
1116 /* load Transmit Descriptor Register */
1117 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1118 if (netif_msg_hw(sis_priv))
1119 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1120 net_dev->name, inl(ioaddr + txdp));
1124 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1125 * @net_dev: the net device to initialize for
1127 * Initialize the Rx descriptor ring,
1128 * and pre-allocate recevie buffers (socket buffer)
1132 sis900_init_rx_ring(struct net_device *net_dev)
1134 struct sis900_private *sis_priv = net_dev->priv;
1135 long ioaddr = net_dev->base_addr;
1138 sis_priv->cur_rx = 0;
1139 sis_priv->dirty_rx = 0;
1141 /* init RX descriptor */
1142 for (i = 0; i < NUM_RX_DESC; i++) {
1143 sis_priv->rx_skbuff[i] = NULL;
1145 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1146 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1147 sis_priv->rx_ring[i].cmdsts = 0;
1148 sis_priv->rx_ring[i].bufptr = 0;
1151 /* allocate sock buffers */
1152 for (i = 0; i < NUM_RX_DESC; i++) {
1153 struct sk_buff *skb;
1155 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1156 /* not enough memory for skbuff, this makes a "hole"
1157 on the buffer ring, it is not clear how the
1158 hardware will react to this kind of degenerated
1162 sis_priv->rx_skbuff[i] = skb;
1163 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1164 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
1165 skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1167 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1169 /* load Receive Descriptor Register */
1170 outl(sis_priv->rx_ring_dma, ioaddr + rxdp);
1171 if (netif_msg_hw(sis_priv))
1172 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1173 net_dev->name, inl(ioaddr + rxdp));
1177 * sis630_set_eq - set phy equalizer value for 630 LAN
1178 * @net_dev: the net device to set equalizer value
1179 * @revision: 630 LAN revision number
1181 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1182 * PHY register 14h(Test)
1183 * Bit 14: 0 -- Automatically dectect (default)
1184 * 1 -- Manually set Equalizer filter
1185 * Bit 13: 0 -- (Default)
1186 * 1 -- Speed up convergence of equalizer setting
1187 * Bit 9 : 0 -- (Default)
1188 * 1 -- Disable Baseline Wander
1189 * Bit 3~7 -- Equalizer filter setting
1190 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1191 * Then calculate equalizer value
1192 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1193 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1194 * Calculate Equalizer value:
1195 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-dectect proper equalizer value.
1196 * When the equalizer is stable, this value is not a fixed value. It will be within
1197 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1198 * 0 <= max <= 4 --> set equalizer to max
1199 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1200 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1203 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1205 struct sis900_private *sis_priv = net_dev->priv;
1206 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1209 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1210 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1213 if (netif_carrier_ok(net_dev)) {
1214 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1215 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1216 (0x2200 | reg14h) & 0xBFFF);
1217 for (i=0; i < maxcount; i++) {
1218 eq_value = (0x00F8 & mdio_read(net_dev,
1219 sis_priv->cur_phy, MII_RESV)) >> 3;
1221 max_value=min_value=eq_value;
1222 max_value = (eq_value > max_value) ?
1223 eq_value : max_value;
1224 min_value = (eq_value < min_value) ?
1225 eq_value : min_value;
1227 /* 630E rule to determine the equalizer value */
1228 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1229 revision == SIS630ET_900_REV) {
1231 eq_value = max_value;
1232 else if (max_value >= 5 && max_value < 15)
1233 eq_value = (max_value == min_value) ?
1234 max_value+2 : max_value+1;
1235 else if (max_value >= 15)
1236 eq_value=(max_value == min_value) ?
1237 max_value+6 : max_value+5;
1239 /* 630B0&B1 rule to determine the equalizer value */
1240 if (revision == SIS630A_900_REV &&
1241 (sis_priv->host_bridge_rev == SIS630B0 ||
1242 sis_priv->host_bridge_rev == SIS630B1)) {
1246 eq_value = (max_value + min_value + 1)/2;
1248 /* write equalizer value and setting */
1249 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1250 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1251 reg14h = (reg14h | 0x6000) & 0xFDFF;
1252 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1254 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1255 if (revision == SIS630A_900_REV &&
1256 (sis_priv->host_bridge_rev == SIS630B0 ||
1257 sis_priv->host_bridge_rev == SIS630B1))
1258 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1259 (reg14h | 0x2200) & 0xBFFF);
1261 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1262 (reg14h | 0x2000) & 0xBFFF);
1268 * sis900_timer - sis900 timer routine
1269 * @data: pointer to sis900 net device
1271 * On each timer ticks we check two things,
1272 * link status (ON/OFF) and link mode (10/100/Full/Half)
1275 static void sis900_timer(unsigned long data)
1277 struct net_device *net_dev = (struct net_device *)data;
1278 struct sis900_private *sis_priv = net_dev->priv;
1279 struct mii_phy *mii_phy = sis_priv->mii;
1280 static const int next_tick = 5*HZ;
1283 if (!sis_priv->autong_complete){
1284 int speed, duplex = 0;
1286 sis900_read_mode(net_dev, &speed, &duplex);
1288 sis900_set_mode(net_dev->base_addr, speed, duplex);
1289 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1290 netif_start_queue(net_dev);
1293 sis_priv->timer.expires = jiffies + HZ;
1294 add_timer(&sis_priv->timer);
1298 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1299 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1301 /* Link OFF -> ON */
1302 if (!netif_carrier_ok(net_dev)) {
1304 /* Search for new PHY */
1305 status = sis900_default_phy(net_dev);
1306 mii_phy = sis_priv->mii;
1308 if (status & MII_STAT_LINK){
1309 sis900_check_mode(net_dev, mii_phy);
1310 netif_carrier_on(net_dev);
1313 /* Link ON -> OFF */
1314 if (!(status & MII_STAT_LINK)){
1315 netif_carrier_off(net_dev);
1316 if(netif_msg_link(sis_priv))
1317 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1319 /* Change mode issue */
1320 if ((mii_phy->phy_id0 == 0x001D) &&
1321 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1322 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1324 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1330 sis_priv->timer.expires = jiffies + next_tick;
1331 add_timer(&sis_priv->timer);
1335 * sis900_check_mode - check the media mode for sis900
1336 * @net_dev: the net device to be checked
1337 * @mii_phy: the mii phy
1339 * Older driver gets the media mode from mii status output
1340 * register. Now we set our media capability and auto-negotiate
1341 * to get the upper bound of speed and duplex between two ends.
1342 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1343 * and autong_complete should be set to 1.
1346 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1348 struct sis900_private *sis_priv = net_dev->priv;
1349 long ioaddr = net_dev->base_addr;
1352 if (mii_phy->phy_types == LAN) {
1353 outl(~EXD & inl(ioaddr + cfg), ioaddr + cfg);
1354 sis900_set_capability(net_dev , mii_phy);
1355 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1357 outl(EXD | inl(ioaddr + cfg), ioaddr + cfg);
1358 speed = HW_SPEED_HOME;
1359 duplex = FDX_CAPABLE_HALF_SELECTED;
1360 sis900_set_mode(ioaddr, speed, duplex);
1361 sis_priv->autong_complete = 1;
1366 * sis900_set_mode - Set the media mode of mac register.
1367 * @ioaddr: the address of the device
1368 * @speed : the transmit speed to be determined
1369 * @duplex: the duplex mode to be determined
1371 * Set the media mode of mac register txcfg/rxcfg according to
1372 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1373 * bus is used instead of PCI bus. When this bit is set 1, the
1374 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1378 static void sis900_set_mode (long ioaddr, int speed, int duplex)
1380 u32 tx_flags = 0, rx_flags = 0;
1382 if (inl(ioaddr + cfg) & EDB_MASTER_EN) {
1383 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1384 (TX_FILL_THRESH << TxFILLT_shift);
1385 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1387 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1388 (TX_FILL_THRESH << TxFILLT_shift);
1389 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1392 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1393 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1394 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1396 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1397 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1400 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1401 tx_flags |= (TxCSI | TxHBI);
1405 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1406 /* Can accept Jumbo packet */
1410 outl (tx_flags, ioaddr + txcfg);
1411 outl (rx_flags, ioaddr + rxcfg);
1415 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1416 * @net_dev: the net device to read mode for
1417 * @phy_addr: mii phy address
1419 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1420 * autong_complete should be set to 0 when starting auto-negotiation.
1421 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1422 * sis900_timer will wait for link on again if autong_complete = 0.
1425 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1427 struct sis900_private *sis_priv = net_dev->priv;
1431 for (i = 0; i < 2; i++)
1432 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1434 if (!(status & MII_STAT_LINK)){
1435 if(netif_msg_link(sis_priv))
1436 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1437 sis_priv->autong_complete = 1;
1438 netif_carrier_off(net_dev);
1442 /* (Re)start AutoNegotiate */
1443 mdio_write(net_dev, phy_addr, MII_CONTROL,
1444 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1445 sis_priv->autong_complete = 0;
1450 * sis900_read_mode - read media mode for sis900 internal phy
1451 * @net_dev: the net device to read mode for
1452 * @speed : the transmit speed to be determined
1453 * @duplex : the duplex mode to be determined
1455 * The capability of remote end will be put in mii register autorec
1456 * after auto-negotiation. Use AND operation to get the upper bound
1457 * of speed and duplex between two ends.
1460 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1462 struct sis900_private *sis_priv = net_dev->priv;
1463 struct mii_phy *phy = sis_priv->mii;
1464 int phy_addr = sis_priv->cur_phy;
1466 u16 autoadv, autorec;
1469 for (i = 0; i < 2; i++)
1470 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1472 if (!(status & MII_STAT_LINK))
1475 /* AutoNegotiate completed */
1476 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1477 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1478 status = autoadv & autorec;
1480 *speed = HW_SPEED_10_MBPS;
1481 *duplex = FDX_CAPABLE_HALF_SELECTED;
1483 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1484 *speed = HW_SPEED_100_MBPS;
1485 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1486 *duplex = FDX_CAPABLE_FULL_SELECTED;
1488 sis_priv->autong_complete = 1;
1490 /* Workaround for Realtek RTL8201 PHY issue */
1491 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1492 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1493 *duplex = FDX_CAPABLE_FULL_SELECTED;
1494 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1495 *speed = HW_SPEED_100_MBPS;
1498 if(netif_msg_link(sis_priv))
1499 printk(KERN_INFO "%s: Media Link On %s %s-duplex \n",
1501 *speed == HW_SPEED_100_MBPS ?
1502 "100mbps" : "10mbps",
1503 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1508 * sis900_tx_timeout - sis900 transmit timeout routine
1509 * @net_dev: the net device to transmit
1511 * print transmit timeout status
1512 * disable interrupts and do some tasks
1515 static void sis900_tx_timeout(struct net_device *net_dev)
1517 struct sis900_private *sis_priv = net_dev->priv;
1518 long ioaddr = net_dev->base_addr;
1519 unsigned long flags;
1522 if(netif_msg_tx_err(sis_priv))
1523 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x \n",
1524 net_dev->name, inl(ioaddr + cr), inl(ioaddr + isr));
1526 /* Disable interrupts by clearing the interrupt mask. */
1527 outl(0x0000, ioaddr + imr);
1529 /* use spinlock to prevent interrupt handler accessing buffer ring */
1530 spin_lock_irqsave(&sis_priv->lock, flags);
1532 /* discard unsent packets */
1533 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1534 for (i = 0; i < NUM_TX_DESC; i++) {
1535 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1538 pci_unmap_single(sis_priv->pci_dev,
1539 sis_priv->tx_ring[i].bufptr, skb->len,
1541 dev_kfree_skb_irq(skb);
1542 sis_priv->tx_skbuff[i] = NULL;
1543 sis_priv->tx_ring[i].cmdsts = 0;
1544 sis_priv->tx_ring[i].bufptr = 0;
1545 sis_priv->stats.tx_dropped++;
1548 sis_priv->tx_full = 0;
1549 netif_wake_queue(net_dev);
1551 spin_unlock_irqrestore(&sis_priv->lock, flags);
1553 net_dev->trans_start = jiffies;
1555 /* load Transmit Descriptor Register */
1556 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1558 /* Enable all known interrupts by setting the interrupt mask. */
1559 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1564 * sis900_start_xmit - sis900 start transmit routine
1565 * @skb: socket buffer pointer to put the data being transmitted
1566 * @net_dev: the net device to transmit with
1568 * Set the transmit buffer descriptor,
1569 * and write TxENA to enable transmit state machine.
1570 * tell upper layer if the buffer is full
1574 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1576 struct sis900_private *sis_priv = net_dev->priv;
1577 long ioaddr = net_dev->base_addr;
1579 unsigned long flags;
1580 unsigned int index_cur_tx, index_dirty_tx;
1581 unsigned int count_dirty_tx;
1583 /* Don't transmit data before the complete of auto-negotiation */
1584 if(!sis_priv->autong_complete){
1585 netif_stop_queue(net_dev);
1589 spin_lock_irqsave(&sis_priv->lock, flags);
1591 /* Calculate the next Tx descriptor entry. */
1592 entry = sis_priv->cur_tx % NUM_TX_DESC;
1593 sis_priv->tx_skbuff[entry] = skb;
1595 /* set the transmit buffer descriptor and enable Transmit State Machine */
1596 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1597 skb->data, skb->len, PCI_DMA_TODEVICE);
1598 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1599 outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
1601 sis_priv->cur_tx ++;
1602 index_cur_tx = sis_priv->cur_tx;
1603 index_dirty_tx = sis_priv->dirty_tx;
1605 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1608 if (index_cur_tx == index_dirty_tx) {
1609 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1610 sis_priv->tx_full = 1;
1611 netif_stop_queue(net_dev);
1612 } else if (count_dirty_tx < NUM_TX_DESC) {
1613 /* Typical path, tell upper layer that more transmission is possible */
1614 netif_start_queue(net_dev);
1616 /* buffer full, tell upper layer no more transmission */
1617 sis_priv->tx_full = 1;
1618 netif_stop_queue(net_dev);
1621 spin_unlock_irqrestore(&sis_priv->lock, flags);
1623 net_dev->trans_start = jiffies;
1625 if (netif_msg_tx_queued(sis_priv))
1626 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1628 net_dev->name, skb->data, (int)skb->len, entry);
1634 * sis900_interrupt - sis900 interrupt handler
1635 * @irq: the irq number
1636 * @dev_instance: the client data object
1637 * @regs: snapshot of processor context
1639 * The interrupt handler does all of the Rx thread work,
1640 * and cleans up after the Tx thread
1643 static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
1645 struct net_device *net_dev = dev_instance;
1646 struct sis900_private *sis_priv = net_dev->priv;
1647 int boguscnt = max_interrupt_work;
1648 long ioaddr = net_dev->base_addr;
1650 unsigned int handled = 0;
1652 spin_lock (&sis_priv->lock);
1655 status = inl(ioaddr + isr);
1657 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1658 /* nothing intresting happened */
1662 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1663 if (status & (RxORN | RxERR | RxOK))
1667 if (status & (TxURN | TxERR | TxIDLE))
1669 sis900_finish_xmit(net_dev);
1671 /* something strange happened !!! */
1672 if (status & HIBERR) {
1673 if(netif_msg_intr(sis_priv))
1674 printk(KERN_INFO "%s: Abnormal interrupt,"
1675 "status %#8.8x.\n", net_dev->name, status);
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);
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));
1692 spin_unlock (&sis_priv->lock);
1693 return IRQ_RETVAL(handled);
1697 * sis900_rx - sis900 receive routine
1698 * @net_dev: the net device which receives data
1700 * Process receive interrupt events,
1701 * put buffer to higher layer and refill buffer pool
1702 * Note: This function is called by interrupt handler,
1703 * don't do "too much" work here
1706 static int sis900_rx(struct net_device *net_dev)
1708 struct sis900_private *sis_priv = net_dev->priv;
1709 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;
1714 if (netif_msg_rx_status(sis_priv))
1715 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1717 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1718 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
1720 while (rx_status & OWN) {
1721 unsigned int rx_size;
1722 unsigned int data_size;
1724 if (--rx_work_limit < 0)
1727 data_size = rx_status & DSIZE;
1728 rx_size = data_size - CRC_SIZE;
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));
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 "
1740 "received, buffer status = 0x%8.8x/%d.\n",
1741 net_dev->name, rx_status, data_size);
1742 sis_priv->stats.rx_errors++;
1743 if (rx_status & OVERRUN)
1744 sis_priv->stats.rx_over_errors++;
1745 if (rx_status & (TOOLONG|RUNT))
1746 sis_priv->stats.rx_length_errors++;
1747 if (rx_status & (RXISERR | FAERR))
1748 sis_priv->stats.rx_frame_errors++;
1749 if (rx_status & CRCERR)
1750 sis_priv->stats.rx_crc_errors++;
1751 /* reset buffer descriptor state */
1752 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1754 struct sk_buff * skb;
1755 struct sk_buff * rx_skb;
1757 pci_unmap_single(sis_priv->pci_dev,
1758 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1759 PCI_DMA_FROMDEVICE);
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) {
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
1770 skb = sis_priv->rx_skbuff[entry];
1771 sis_priv->stats.rx_dropped++;
1772 goto refill_rx_ring;
1775 /* 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))
1780 printk(KERN_WARNING "%s: NULL pointer "
1781 "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);
1788 /* give the socket buffer to upper layers */
1789 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);
1794 /* some network statistics */
1795 if ((rx_status & BCAST) == MCAST)
1796 sis_priv->stats.multicast++;
1797 net_dev->last_rx = jiffies;
1798 sis_priv->stats.rx_bytes += rx_size;
1799 sis_priv->stats.rx_packets++;
1800 sis_priv->dirty_rx++;
1802 sis_priv->rx_skbuff[entry] = skb;
1803 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1804 sis_priv->rx_ring[entry].bufptr =
1805 pci_map_single(sis_priv->pci_dev, skb->data,
1806 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1809 entry = sis_priv->cur_rx % NUM_RX_DESC;
1810 rx_status = sis_priv->rx_ring[entry].cmdsts;
1813 /* refill the Rx buffer, what if the rate of refilling is slower
1814 * than consuming ?? */
1815 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
1816 struct sk_buff *skb;
1818 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1820 if (sis_priv->rx_skbuff[entry] == NULL) {
1821 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1822 /* not enough memory for skbuff, this makes a
1823 * "hole" on the buffer ring, it is not clear
1824 * how the hardware will react to this kind
1825 * of degenerated buffer */
1826 if (netif_msg_rx_err(sis_priv))
1827 printk(KERN_INFO "%s: Memory squeeze,"
1828 "deferring packet.\n",
1830 sis_priv->stats.rx_dropped++;
1833 sis_priv->rx_skbuff[entry] = skb;
1834 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1835 sis_priv->rx_ring[entry].bufptr =
1836 pci_map_single(sis_priv->pci_dev, skb->data,
1837 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1840 /* re-enable the potentially idle receive state matchine */
1841 outl(RxENA | inl(ioaddr + cr), ioaddr + cr );
1847 * sis900_finish_xmit - finish up transmission of packets
1848 * @net_dev: the net device to be transmitted on
1850 * Check for error condition and free socket buffer etc
1851 * schedule for more transmission as needed
1852 * Note: This function is called by interrupt handler,
1853 * don't do "too much" work here
1856 static void sis900_finish_xmit (struct net_device *net_dev)
1858 struct sis900_private *sis_priv = net_dev->priv;
1860 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1861 struct sk_buff *skb;
1865 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1866 tx_status = sis_priv->tx_ring[entry].cmdsts;
1868 if (tx_status & OWN) {
1869 /* The packet is not transmitted yet (owned by hardware) !
1870 * Note: the interrupt is generated only when Tx Machine
1871 * is idle, so this is an almost impossible case */
1875 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1876 /* packet unsuccessfully transmitted */
1877 if (netif_msg_tx_err(sis_priv))
1878 printk(KERN_DEBUG "%s: Transmit "
1879 "error, Tx status %8.8x.\n",
1880 net_dev->name, tx_status);
1881 sis_priv->stats.tx_errors++;
1882 if (tx_status & UNDERRUN)
1883 sis_priv->stats.tx_fifo_errors++;
1884 if (tx_status & ABORT)
1885 sis_priv->stats.tx_aborted_errors++;
1886 if (tx_status & NOCARRIER)
1887 sis_priv->stats.tx_carrier_errors++;
1888 if (tx_status & OWCOLL)
1889 sis_priv->stats.tx_window_errors++;
1891 /* packet successfully transmitted */
1892 sis_priv->stats.collisions += (tx_status & COLCNT) >> 16;
1893 sis_priv->stats.tx_bytes += tx_status & DSIZE;
1894 sis_priv->stats.tx_packets++;
1896 /* Free the original skb. */
1897 skb = sis_priv->tx_skbuff[entry];
1898 pci_unmap_single(sis_priv->pci_dev,
1899 sis_priv->tx_ring[entry].bufptr, skb->len,
1901 dev_kfree_skb_irq(skb);
1902 sis_priv->tx_skbuff[entry] = NULL;
1903 sis_priv->tx_ring[entry].bufptr = 0;
1904 sis_priv->tx_ring[entry].cmdsts = 0;
1907 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1908 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1909 /* The ring is no longer full, clear tx_full and schedule
1910 * more transmission by netif_wake_queue(net_dev) */
1911 sis_priv->tx_full = 0;
1912 netif_wake_queue (net_dev);
1917 * sis900_close - close sis900 device
1918 * @net_dev: the net device to be closed
1920 * Disable interrupts, stop the Tx and Rx Status Machine
1921 * free Tx and RX socket buffer
1924 static int sis900_close(struct net_device *net_dev)
1926 long ioaddr = net_dev->base_addr;
1927 struct sis900_private *sis_priv = net_dev->priv;
1928 struct sk_buff *skb;
1931 netif_stop_queue(net_dev);
1933 /* Disable interrupts by clearing the interrupt mask. */
1934 outl(0x0000, ioaddr + imr);
1935 outl(0x0000, ioaddr + ier);
1937 /* Stop the chip's Tx and Rx Status Machine */
1938 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
1940 del_timer(&sis_priv->timer);
1942 free_irq(net_dev->irq, net_dev);
1944 /* Free Tx and RX skbuff */
1945 for (i = 0; i < NUM_RX_DESC; i++) {
1946 skb = sis_priv->rx_skbuff[i];
1948 pci_unmap_single(sis_priv->pci_dev,
1949 sis_priv->rx_ring[i].bufptr,
1950 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1952 sis_priv->rx_skbuff[i] = NULL;
1955 for (i = 0; i < NUM_TX_DESC; i++) {
1956 skb = sis_priv->tx_skbuff[i];
1958 pci_unmap_single(sis_priv->pci_dev,
1959 sis_priv->tx_ring[i].bufptr, skb->len,
1962 sis_priv->tx_skbuff[i] = NULL;
1966 /* Green! Put the chip in low-power mode. */
1972 * sis900_get_drvinfo - Return information about driver
1973 * @net_dev: the net device to probe
1974 * @info: container for info returned
1976 * Process ethtool command such as "ehtool -i" to show information
1979 static void sis900_get_drvinfo(struct net_device *net_dev,
1980 struct ethtool_drvinfo *info)
1982 struct sis900_private *sis_priv = net_dev->priv;
1984 strcpy (info->driver, SIS900_MODULE_NAME);
1985 strcpy (info->version, SIS900_DRV_VERSION);
1986 strcpy (info->bus_info, pci_name(sis_priv->pci_dev));
1989 static u32 sis900_get_msglevel(struct net_device *net_dev)
1991 struct sis900_private *sis_priv = net_dev->priv;
1992 return sis_priv->msg_enable;
1995 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
1997 struct sis900_private *sis_priv = net_dev->priv;
1998 sis_priv->msg_enable = value;
2001 static u32 sis900_get_link(struct net_device *net_dev)
2003 struct sis900_private *sis_priv = net_dev->priv;
2004 return mii_link_ok(&sis_priv->mii_info);
2007 static int sis900_get_settings(struct net_device *net_dev,
2008 struct ethtool_cmd *cmd)
2010 struct sis900_private *sis_priv = net_dev->priv;
2011 spin_lock_irq(&sis_priv->lock);
2012 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2013 spin_unlock_irq(&sis_priv->lock);
2017 static int sis900_set_settings(struct net_device *net_dev,
2018 struct ethtool_cmd *cmd)
2020 struct sis900_private *sis_priv = net_dev->priv;
2022 spin_lock_irq(&sis_priv->lock);
2023 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2024 spin_unlock_irq(&sis_priv->lock);
2028 static int sis900_nway_reset(struct net_device *net_dev)
2030 struct sis900_private *sis_priv = net_dev->priv;
2031 return mii_nway_restart(&sis_priv->mii_info);
2035 * sis900_set_wol - Set up Wake on Lan registers
2036 * @net_dev: the net device to probe
2037 * @wol: container for info passed to the driver
2039 * Process ethtool command "wol" to setup wake on lan features.
2040 * SiS900 supports sending WoL events if a correct packet is received,
2041 * but there is no simple way to filter them to only a subset (broadcast,
2042 * multicast, unicast or arp).
2045 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2047 struct sis900_private *sis_priv = net_dev->priv;
2048 long pmctrl_addr = net_dev->base_addr + pmctrl;
2049 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2051 if (wol->wolopts == 0) {
2052 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2053 cfgpmcsr &= ~PME_EN;
2054 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2055 outl(pmctrl_bits, pmctrl_addr);
2056 if (netif_msg_wol(sis_priv))
2057 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2061 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2062 | WAKE_BCAST | WAKE_ARP))
2065 if (wol->wolopts & WAKE_MAGIC)
2066 pmctrl_bits |= MAGICPKT;
2067 if (wol->wolopts & WAKE_PHY)
2068 pmctrl_bits |= LINKON;
2070 outl(pmctrl_bits, pmctrl_addr);
2072 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2074 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2075 if (netif_msg_wol(sis_priv))
2076 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2081 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2083 long pmctrl_addr = net_dev->base_addr + pmctrl;
2086 pmctrl_bits = inl(pmctrl_addr);
2087 if (pmctrl_bits & MAGICPKT)
2088 wol->wolopts |= WAKE_MAGIC;
2089 if (pmctrl_bits & LINKON)
2090 wol->wolopts |= WAKE_PHY;
2092 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2095 static const struct ethtool_ops sis900_ethtool_ops = {
2096 .get_drvinfo = sis900_get_drvinfo,
2097 .get_msglevel = sis900_get_msglevel,
2098 .set_msglevel = sis900_set_msglevel,
2099 .get_link = sis900_get_link,
2100 .get_settings = sis900_get_settings,
2101 .set_settings = sis900_set_settings,
2102 .nway_reset = sis900_nway_reset,
2103 .get_wol = sis900_get_wol,
2104 .set_wol = sis900_set_wol
2108 * mii_ioctl - process MII i/o control command
2109 * @net_dev: the net device to command for
2110 * @rq: parameter for command
2111 * @cmd: the i/o command
2113 * Process MII command like read/write MII register
2116 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2118 struct sis900_private *sis_priv = net_dev->priv;
2119 struct mii_ioctl_data *data = if_mii(rq);
2122 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2123 data->phy_id = sis_priv->mii->phy_addr;
2126 case SIOCGMIIREG: /* Read MII PHY register. */
2127 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2130 case SIOCSMIIREG: /* Write MII PHY register. */
2131 if (!capable(CAP_NET_ADMIN))
2133 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2141 * sis900_get_stats - Get sis900 read/write statistics
2142 * @net_dev: the net device to get statistics for
2144 * get tx/rx statistics for sis900
2147 static struct net_device_stats *
2148 sis900_get_stats(struct net_device *net_dev)
2150 struct sis900_private *sis_priv = net_dev->priv;
2152 return &sis_priv->stats;
2156 * sis900_set_config - Set media type by net_device.set_config
2157 * @dev: the net device for media type change
2158 * @map: ifmap passed by ifconfig
2160 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2161 * we support only port changes. All other runtime configuration
2162 * changes will be ignored
2165 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2167 struct sis900_private *sis_priv = dev->priv;
2168 struct mii_phy *mii_phy = sis_priv->mii;
2172 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2173 /* we switch on the ifmap->port field. I couldn't find anything
2174 * like a definition or standard for the values of that field.
2175 * I think the meaning of those values is device specific. But
2176 * since I would like to change the media type via the ifconfig
2177 * command I use the definition from linux/netdevice.h
2178 * (which seems to be different from the ifport(pcmcia) definition) */
2180 case IF_PORT_UNKNOWN: /* use auto here */
2181 dev->if_port = map->port;
2182 /* we are going to change the media type, so the Link
2183 * will be temporary down and we need to reflect that
2184 * here. When the Link comes up again, it will be
2185 * sensed by the sis_timer procedure, which also does
2186 * all the rest for us */
2187 netif_carrier_off(dev);
2189 /* read current state */
2190 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2192 /* enable auto negotiation and reset the negotioation
2193 * (I don't really know what the auto negatiotiation
2194 * reset really means, but it sounds for me right to
2196 mdio_write(dev, mii_phy->phy_addr,
2197 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2201 case IF_PORT_10BASET: /* 10BaseT */
2202 dev->if_port = map->port;
2204 /* we are going to change the media type, so the Link
2205 * will be temporary down and we need to reflect that
2206 * here. When the Link comes up again, it will be
2207 * sensed by the sis_timer procedure, which also does
2208 * all the rest for us */
2209 netif_carrier_off(dev);
2211 /* set Speed to 10Mbps */
2212 /* read current state */
2213 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2215 /* disable auto negotiation and force 10MBit mode*/
2216 mdio_write(dev, mii_phy->phy_addr,
2217 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2221 case IF_PORT_100BASET: /* 100BaseT */
2222 case IF_PORT_100BASETX: /* 100BaseTx */
2223 dev->if_port = map->port;
2225 /* we are going to change the media type, so the Link
2226 * will be temporary down and we need to reflect that
2227 * here. When the Link comes up again, it will be
2228 * sensed by the sis_timer procedure, which also does
2229 * all the rest for us */
2230 netif_carrier_off(dev);
2232 /* set Speed to 100Mbps */
2233 /* disable auto negotiation and enable 100MBit Mode */
2234 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2235 mdio_write(dev, mii_phy->phy_addr,
2236 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2241 case IF_PORT_10BASE2: /* 10Base2 */
2242 case IF_PORT_AUI: /* AUI */
2243 case IF_PORT_100BASEFX: /* 100BaseFx */
2244 /* These Modes are not supported (are they?)*/
2256 * sis900_mcast_bitnr - compute hashtable index
2257 * @addr: multicast address
2258 * @revision: revision id of chip
2260 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2261 * hash table, which makes this function a little bit different from other drivers
2262 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2263 * multicast hash table.
2266 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2269 u32 crc = ether_crc(6, addr);
2271 /* leave 8 or 7 most siginifant bits */
2272 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2273 return ((int)(crc >> 24));
2275 return ((int)(crc >> 25));
2279 * set_rx_mode - Set SiS900 receive mode
2280 * @net_dev: the net device to be set
2282 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2283 * And set the appropriate multicast filter.
2284 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2287 static void set_rx_mode(struct net_device *net_dev)
2289 long ioaddr = net_dev->base_addr;
2290 struct sis900_private * sis_priv = net_dev->priv;
2291 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2292 int i, table_entries;
2295 /* 635 Hash Table entries = 256(2^16) */
2296 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2297 (sis_priv->chipset_rev == SIS900B_900_REV))
2302 if (net_dev->flags & IFF_PROMISC) {
2303 /* Accept any kinds of packets */
2304 rx_mode = RFPromiscuous;
2305 for (i = 0; i < table_entries; i++)
2306 mc_filter[i] = 0xffff;
2307 } else if ((net_dev->mc_count > multicast_filter_limit) ||
2308 (net_dev->flags & IFF_ALLMULTI)) {
2309 /* too many multicast addresses or accept all multicast packet */
2310 rx_mode = RFAAB | RFAAM;
2311 for (i = 0; i < table_entries; i++)
2312 mc_filter[i] = 0xffff;
2314 /* Accept Broadcast packet, destination address matchs our
2315 * MAC address, use Receive Filter to reject unwanted MCAST
2317 struct dev_mc_list *mclist;
2319 for (i = 0, mclist = net_dev->mc_list;
2320 mclist && i < net_dev->mc_count;
2321 i++, mclist = mclist->next) {
2322 unsigned int bit_nr =
2323 sis900_mcast_bitnr(mclist->dmi_addr, sis_priv->chipset_rev);
2324 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2328 /* update Multicast Hash Table in Receive Filter */
2329 for (i = 0; i < table_entries; i++) {
2330 /* why plus 0x04 ??, That makes the correct value for hash table. */
2331 outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr);
2332 outl(mc_filter[i], ioaddr + rfdr);
2335 outl(RFEN | rx_mode, ioaddr + rfcr);
2337 /* sis900 is capable of looping back packets at MAC level for
2338 * debugging purpose */
2339 if (net_dev->flags & IFF_LOOPBACK) {
2341 /* We must disable Tx/Rx before setting loopback mode */
2342 cr_saved = inl(ioaddr + cr);
2343 outl(cr_saved | TxDIS | RxDIS, ioaddr + cr);
2344 /* enable loopback */
2345 outl(inl(ioaddr + txcfg) | TxMLB, ioaddr + txcfg);
2346 outl(inl(ioaddr + rxcfg) | RxATX, ioaddr + rxcfg);
2348 outl(cr_saved, ioaddr + cr);
2355 * sis900_reset - Reset sis900 MAC
2356 * @net_dev: the net device to reset
2358 * reset sis900 MAC and wait until finished
2359 * reset through command register
2360 * change backoff algorithm for 900B0 & 635 M/B
2363 static void sis900_reset(struct net_device *net_dev)
2365 struct sis900_private * sis_priv = net_dev->priv;
2366 long ioaddr = net_dev->base_addr;
2368 u32 status = TxRCMP | RxRCMP;
2370 outl(0, ioaddr + ier);
2371 outl(0, ioaddr + imr);
2372 outl(0, ioaddr + rfcr);
2374 outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr);
2376 /* Check that the chip has finished the reset. */
2377 while (status && (i++ < 1000)) {
2378 status ^= (inl(isr + ioaddr) & status);
2381 if( (sis_priv->chipset_rev >= SIS635A_900_REV) ||
2382 (sis_priv->chipset_rev == SIS900B_900_REV) )
2383 outl(PESEL | RND_CNT, ioaddr + cfg);
2385 outl(PESEL, ioaddr + cfg);
2389 * sis900_remove - Remove sis900 device
2390 * @pci_dev: the pci device to be removed
2392 * remove and release SiS900 net device
2395 static void __devexit sis900_remove(struct pci_dev *pci_dev)
2397 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2398 struct sis900_private * sis_priv = net_dev->priv;
2399 struct mii_phy *phy = NULL;
2401 while (sis_priv->first_mii) {
2402 phy = sis_priv->first_mii;
2403 sis_priv->first_mii = phy->next;
2407 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2408 sis_priv->rx_ring_dma);
2409 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2410 sis_priv->tx_ring_dma);
2411 unregister_netdev(net_dev);
2412 free_netdev(net_dev);
2413 pci_release_regions(pci_dev);
2414 pci_set_drvdata(pci_dev, NULL);
2419 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2421 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2422 long ioaddr = net_dev->base_addr;
2424 if(!netif_running(net_dev))
2427 netif_stop_queue(net_dev);
2428 netif_device_detach(net_dev);
2430 /* Stop the chip's Tx and Rx Status Machine */
2431 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
2433 pci_set_power_state(pci_dev, PCI_D3hot);
2434 pci_save_state(pci_dev);
2439 static int sis900_resume(struct pci_dev *pci_dev)
2441 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2442 struct sis900_private *sis_priv = net_dev->priv;
2443 long ioaddr = net_dev->base_addr;
2445 if(!netif_running(net_dev))
2447 pci_restore_state(pci_dev);
2448 pci_set_power_state(pci_dev, PCI_D0);
2450 sis900_init_rxfilter(net_dev);
2452 sis900_init_tx_ring(net_dev);
2453 sis900_init_rx_ring(net_dev);
2455 set_rx_mode(net_dev);
2457 netif_device_attach(net_dev);
2458 netif_start_queue(net_dev);
2460 /* Workaround for EDB */
2461 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2463 /* Enable all known interrupts by setting the interrupt mask. */
2464 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
2465 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
2466 outl(IE, ioaddr + ier);
2468 sis900_check_mode(net_dev, sis_priv->mii);
2472 #endif /* CONFIG_PM */
2474 static struct pci_driver sis900_pci_driver = {
2475 .name = SIS900_MODULE_NAME,
2476 .id_table = sis900_pci_tbl,
2477 .probe = sis900_probe,
2478 .remove = __devexit_p(sis900_remove),
2480 .suspend = sis900_suspend,
2481 .resume = sis900_resume,
2482 #endif /* CONFIG_PM */
2485 static int __init sis900_init_module(void)
2487 /* when a module, this is printed whether or not devices are found in probe */
2492 return pci_register_driver(&sis900_pci_driver);
2495 static void __exit sis900_cleanup_module(void)
2497 pci_unregister_driver(&sis900_pci_driver);
2500 module_init(sis900_init_module);
2501 module_exit(sis900_cleanup_module);