1 /* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
2 Copyright 1999 Silicon Integrated System Corporation
3 Revision: 1.08.09 Sep. 19 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 1.08.09 Sep. 19 2005 Daniele Venzano add Wake on LAN support
21 Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages
22 Rev 1.08.07 Nov. 2 2003 Daniele Venzano <webvenza@libero.it> add suspend/resume support
23 Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support
24 Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary
25 Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support
26 Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function
27 Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem
28 Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY
29 Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix
30 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
31 Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support
32 Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup
33 Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support
34 Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix
35 Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning
36 Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig
37 Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support
38 Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E eqaulizer workaround rule
39 Rev 1.07.01 Aug. 08 2000 Ollie Lho minor update for SiS 630E and SiS 630E A1
40 Rev 1.07 Mar. 07 2000 Ollie Lho bug fix in Rx buffer ring
41 Rev 1.06.04 Feb. 11 2000 Jeff Garzik <jgarzik@pobox.com> softnet and init for kernel 2.4
42 Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release
43 Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed
44 Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com)
45 Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release
46 Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx
47 Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support
48 Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release
51 #include <linux/module.h>
52 #include <linux/moduleparam.h>
53 #include <linux/kernel.h>
54 #include <linux/string.h>
55 #include <linux/timer.h>
56 #include <linux/errno.h>
57 #include <linux/ioport.h>
58 #include <linux/slab.h>
59 #include <linux/interrupt.h>
60 #include <linux/pci.h>
61 #include <linux/netdevice.h>
62 #include <linux/init.h>
63 #include <linux/mii.h>
64 #include <linux/etherdevice.h>
65 #include <linux/skbuff.h>
66 #include <linux/delay.h>
67 #include <linux/ethtool.h>
68 #include <linux/crc32.h>
69 #include <linux/bitops.h>
70 #include <linux/dma-mapping.h>
72 #include <asm/processor.h> /* Processor type for cache alignment. */
75 #include <asm/uaccess.h> /* User space memory access functions */
79 #define SIS900_MODULE_NAME "sis900"
80 #define SIS900_DRV_VERSION "v1.08.09 Sep. 19 2005"
82 static char version[] __devinitdata =
83 KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
85 static int max_interrupt_work = 40;
86 static int multicast_filter_limit = 128;
88 static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
90 #define SIS900_DEF_MSG \
96 /* Time in jiffies before concluding the transmitter is hung. */
97 #define TX_TIMEOUT (4*HZ)
103 static const 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 const 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 { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
131 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
132 { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
133 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
134 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
135 { "ICS LAN PHY", 0x0015, 0xF440, LAN },
136 { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
137 { "NS 83847 PHY", 0x2000, 0x5C30, MIX },
138 { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
139 { "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
144 struct mii_phy * next;
152 typedef struct _BufferDesc {
158 struct sis900_private {
159 struct net_device_stats stats;
160 struct pci_dev * pci_dev;
164 struct mii_phy * mii;
165 struct mii_phy * first_mii; /* record the first mii structure */
166 unsigned int cur_phy;
167 struct mii_if_info mii_info;
169 struct timer_list timer; /* Link status detection timer. */
170 u8 autong_complete; /* 1: auto-negotiate complete */
174 unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
175 unsigned int cur_tx, dirty_tx;
177 /* The saved address of a sent/receive-in-place packet buffer */
178 struct sk_buff *tx_skbuff[NUM_TX_DESC];
179 struct sk_buff *rx_skbuff[NUM_RX_DESC];
183 dma_addr_t tx_ring_dma;
184 dma_addr_t rx_ring_dma;
186 unsigned int tx_full; /* The Tx queue is full. */
191 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
192 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
193 MODULE_LICENSE("GPL");
195 module_param(multicast_filter_limit, int, 0444);
196 module_param(max_interrupt_work, int, 0444);
197 module_param(sis900_debug, int, 0444);
198 MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
199 MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
200 MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
202 #ifdef CONFIG_NET_POLL_CONTROLLER
203 static void sis900_poll(struct net_device *dev);
205 static int sis900_open(struct net_device *net_dev);
206 static int sis900_mii_probe (struct net_device * net_dev);
207 static void sis900_init_rxfilter (struct net_device * net_dev);
208 static u16 read_eeprom(long ioaddr, int location);
209 static int mdio_read(struct net_device *net_dev, int phy_id, int location);
210 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
211 static void sis900_timer(unsigned long data);
212 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
213 static void sis900_tx_timeout(struct net_device *net_dev);
214 static void sis900_init_tx_ring(struct net_device *net_dev);
215 static void sis900_init_rx_ring(struct net_device *net_dev);
216 static int sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
217 static int sis900_rx(struct net_device *net_dev);
218 static void sis900_finish_xmit (struct net_device *net_dev);
219 static irqreturn_t sis900_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
220 static int sis900_close(struct net_device *net_dev);
221 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
222 static struct net_device_stats *sis900_get_stats(struct net_device *net_dev);
223 static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
224 static void set_rx_mode(struct net_device *net_dev);
225 static void sis900_reset(struct net_device *net_dev);
226 static void sis630_set_eq(struct net_device *net_dev, u8 revision);
227 static int sis900_set_config(struct net_device *dev, struct ifmap *map);
228 static u16 sis900_default_phy(struct net_device * net_dev);
229 static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
230 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
231 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
232 static void sis900_set_mode (long ioaddr, int speed, int duplex);
233 static struct ethtool_ops sis900_ethtool_ops;
236 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
237 * @pci_dev: the sis900 pci device
238 * @net_dev: the net device to get address for
240 * Older SiS900 and friends, use EEPROM to store MAC address.
241 * MAC address is read from read_eeprom() into @net_dev->dev_addr.
244 static int __devinit sis900_get_mac_addr(struct pci_dev * pci_dev, struct net_device *net_dev)
246 long ioaddr = pci_resource_start(pci_dev, 0);
250 /* check to see if we have sane EEPROM */
251 signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
252 if (signature == 0xffff || signature == 0x0000) {
253 printk (KERN_WARNING "%s: Error EERPOM read %x\n",
254 pci_name(pci_dev), signature);
258 /* get MAC address from EEPROM */
259 for (i = 0; i < 3; i++)
260 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
266 * sis630e_get_mac_addr - Get MAC address for SiS630E model
267 * @pci_dev: the sis900 pci device
268 * @net_dev: the net device to get address for
270 * SiS630E model, use APC CMOS RAM to store MAC address.
271 * APC CMOS RAM is accessed through ISA bridge.
272 * MAC address is read into @net_dev->dev_addr.
275 static int __devinit sis630e_get_mac_addr(struct pci_dev * pci_dev,
276 struct net_device *net_dev)
278 struct pci_dev *isa_bridge = NULL;
282 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
284 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
286 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
290 pci_read_config_byte(isa_bridge, 0x48, ®);
291 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
293 for (i = 0; i < 6; i++) {
294 outb(0x09 + i, 0x70);
295 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
297 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
298 pci_dev_put(isa_bridge);
305 * sis635_get_mac_addr - Get MAC address for SIS635 model
306 * @pci_dev: the sis900 pci device
307 * @net_dev: the net device to get address for
309 * SiS635 model, set MAC Reload Bit to load Mac address from APC
310 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
311 * @net_dev->dev_addr.
314 static int __devinit sis635_get_mac_addr(struct pci_dev * pci_dev,
315 struct net_device *net_dev)
317 long ioaddr = net_dev->base_addr;
321 rfcrSave = inl(rfcr + ioaddr);
323 outl(rfcrSave | RELOAD, ioaddr + cr);
324 outl(0, ioaddr + cr);
326 /* disable packet filtering before setting filter */
327 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
329 /* load MAC addr to filter data register */
330 for (i = 0 ; i < 3 ; i++) {
331 outl((i << RFADDR_shift), ioaddr + rfcr);
332 *( ((u16 *)net_dev->dev_addr) + i) = inw(ioaddr + rfdr);
335 /* enable packet filtering */
336 outl(rfcrSave | RFEN, rfcr + ioaddr);
342 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
343 * @pci_dev: the sis900 pci device
344 * @net_dev: the net device to get address for
346 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
348 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
349 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
350 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
351 * EEDONE signal to refuse EEPROM access by LAN.
352 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
353 * The signature field in SiS962 or SiS963 spec is meaningless.
354 * MAC address is read into @net_dev->dev_addr.
357 static int __devinit sis96x_get_mac_addr(struct pci_dev * pci_dev,
358 struct net_device *net_dev)
360 long ioaddr = net_dev->base_addr;
361 long ee_addr = ioaddr + mear;
365 outl(EEREQ, ee_addr);
366 while(waittime < 2000) {
367 if(inl(ee_addr) & EEGNT) {
369 /* get MAC address from EEPROM */
370 for (i = 0; i < 3; i++)
371 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
373 outl(EEDONE, ee_addr);
380 outl(EEDONE, ee_addr);
385 * sis900_probe - Probe for sis900 device
386 * @pci_dev: the sis900 pci device
387 * @pci_id: the pci device ID
389 * Check and probe sis900 net device for @pci_dev.
390 * Get mac address according to the chip revision,
391 * and assign SiS900-specific entries in the device structure.
392 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
395 static int __devinit sis900_probe(struct pci_dev *pci_dev,
396 const struct pci_device_id *pci_id)
398 struct sis900_private *sis_priv;
399 struct net_device *net_dev;
405 const char *card_name = card_names[pci_id->driver_data];
406 const char *dev_name = pci_name(pci_dev);
408 /* when built into the kernel, we only print version if device is found */
410 static int printed_version;
411 if (!printed_version++)
415 /* setup various bits in PCI command register */
416 ret = pci_enable_device(pci_dev);
419 i = pci_set_dma_mask(pci_dev, DMA_32BIT_MASK);
421 printk(KERN_ERR "sis900.c: architecture does not support"
422 "32bit PCI busmaster DMA\n");
426 pci_set_master(pci_dev);
428 net_dev = alloc_etherdev(sizeof(struct sis900_private));
431 SET_MODULE_OWNER(net_dev);
432 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
434 /* We do a request_region() to register /proc/ioports info. */
435 ioaddr = pci_resource_start(pci_dev, 0);
436 ret = pci_request_regions(pci_dev, "sis900");
440 sis_priv = net_dev->priv;
441 net_dev->base_addr = ioaddr;
442 net_dev->irq = pci_dev->irq;
443 sis_priv->pci_dev = pci_dev;
444 spin_lock_init(&sis_priv->lock);
446 pci_set_drvdata(pci_dev, net_dev);
448 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
451 goto err_out_cleardev;
453 sis_priv->tx_ring = (BufferDesc *)ring_space;
454 sis_priv->tx_ring_dma = ring_dma;
456 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
461 sis_priv->rx_ring = (BufferDesc *)ring_space;
462 sis_priv->rx_ring_dma = ring_dma;
464 /* The SiS900-specific entries in the device structure. */
465 net_dev->open = &sis900_open;
466 net_dev->hard_start_xmit = &sis900_start_xmit;
467 net_dev->stop = &sis900_close;
468 net_dev->get_stats = &sis900_get_stats;
469 net_dev->set_config = &sis900_set_config;
470 net_dev->set_multicast_list = &set_rx_mode;
471 net_dev->do_ioctl = &mii_ioctl;
472 net_dev->tx_timeout = sis900_tx_timeout;
473 net_dev->watchdog_timeo = TX_TIMEOUT;
474 net_dev->ethtool_ops = &sis900_ethtool_ops;
476 #ifdef CONFIG_NET_POLL_CONTROLLER
477 net_dev->poll_controller = &sis900_poll;
480 if (sis900_debug > 0)
481 sis_priv->msg_enable = sis900_debug;
483 sis_priv->msg_enable = SIS900_DEF_MSG;
485 sis_priv->mii_info.dev = net_dev;
486 sis_priv->mii_info.mdio_read = mdio_read;
487 sis_priv->mii_info.mdio_write = mdio_write;
488 sis_priv->mii_info.phy_id_mask = 0x1f;
489 sis_priv->mii_info.reg_num_mask = 0x1f;
491 /* Get Mac address according to the chip revision */
492 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &(sis_priv->chipset_rev));
493 if(netif_msg_probe(sis_priv))
494 printk(KERN_DEBUG "%s: detected revision %2.2x, "
495 "trying to get MAC address...\n",
496 dev_name, sis_priv->chipset_rev);
499 if (sis_priv->chipset_rev == SIS630E_900_REV)
500 ret = sis630e_get_mac_addr(pci_dev, net_dev);
501 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
502 ret = sis635_get_mac_addr(pci_dev, net_dev);
503 else if (sis_priv->chipset_rev == SIS96x_900_REV)
504 ret = sis96x_get_mac_addr(pci_dev, net_dev);
506 ret = sis900_get_mac_addr(pci_dev, net_dev);
509 printk(KERN_WARNING "%s: Cannot read MAC address.\n", dev_name);
514 /* 630ET : set the mii access mode as software-mode */
515 if (sis_priv->chipset_rev == SIS630ET_900_REV)
516 outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
518 /* probe for mii transceiver */
519 if (sis900_mii_probe(net_dev) == 0) {
520 printk(KERN_WARNING "%s: Error probing MII device.\n",
526 /* save our host bridge revision */
527 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
529 pci_read_config_byte(dev, PCI_CLASS_REVISION, &sis_priv->host_bridge_rev);
533 ret = register_netdev(net_dev);
537 /* print some information about our NIC */
538 printk(KERN_INFO "%s: %s at %#lx, IRQ %d, ", net_dev->name,
539 card_name, ioaddr, net_dev->irq);
540 for (i = 0; i < 5; i++)
541 printk("%2.2x:", (u8)net_dev->dev_addr[i]);
542 printk("%2.2x.\n", net_dev->dev_addr[i]);
544 /* Detect Wake on Lan support */
545 ret = (inl(net_dev->base_addr + CFGPMC) & PMESP) >> 27;
546 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
547 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
552 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
553 sis_priv->rx_ring_dma);
555 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
556 sis_priv->tx_ring_dma);
558 pci_set_drvdata(pci_dev, NULL);
559 pci_release_regions(pci_dev);
561 free_netdev(net_dev);
566 * sis900_mii_probe - Probe MII PHY for sis900
567 * @net_dev: the net device to probe for
569 * Search for total of 32 possible mii phy addresses.
570 * Identify and set current phy if found one,
571 * return error if it failed to found.
574 static int __init sis900_mii_probe(struct net_device * net_dev)
576 struct sis900_private * sis_priv = net_dev->priv;
577 const char *dev_name = pci_name(sis_priv->pci_dev);
578 u16 poll_bit = MII_STAT_LINK, status = 0;
579 unsigned long timeout = jiffies + 5 * HZ;
582 sis_priv->mii = NULL;
584 /* search for total of 32 possible mii phy addresses */
585 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
586 struct mii_phy * mii_phy = NULL;
591 for(i = 0; i < 2; i++)
592 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
594 if (mii_status == 0xffff || mii_status == 0x0000) {
595 if (netif_msg_probe(sis_priv))
596 printk(KERN_DEBUG "%s: MII at address %d"
602 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
603 printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n");
604 mii_phy = sis_priv->first_mii;
608 mii_phy = mii_phy->next;
614 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
615 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
616 mii_phy->phy_addr = phy_addr;
617 mii_phy->status = mii_status;
618 mii_phy->next = sis_priv->mii;
619 sis_priv->mii = mii_phy;
620 sis_priv->first_mii = mii_phy;
622 for (i = 0; mii_chip_table[i].phy_id1; i++)
623 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
624 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
625 mii_phy->phy_types = mii_chip_table[i].phy_types;
626 if (mii_chip_table[i].phy_types == MIX)
628 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
629 printk(KERN_INFO "%s: %s transceiver found "
632 mii_chip_table[i].name,
637 if( !mii_chip_table[i].phy_id1 ) {
638 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
640 mii_phy->phy_types = UNKNOWN;
644 if (sis_priv->mii == NULL) {
645 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
649 /* select default PHY for mac */
650 sis_priv->mii = NULL;
651 sis900_default_phy( net_dev );
653 /* Reset phy if default phy is internal sis900 */
654 if ((sis_priv->mii->phy_id0 == 0x001D) &&
655 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
656 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
658 /* workaround for ICS1893 PHY */
659 if ((sis_priv->mii->phy_id0 == 0x0015) &&
660 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
661 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
663 if(status & MII_STAT_LINK){
667 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
668 if (time_after_eq(jiffies, timeout)) {
669 printk(KERN_WARNING "%s: reset phy and link down now\n",
676 if (sis_priv->chipset_rev == SIS630E_900_REV) {
677 /* SiS 630E has some bugs on default value of PHY registers */
678 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
679 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
680 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
681 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
682 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
685 if (sis_priv->mii->status & MII_STAT_LINK)
686 netif_carrier_on(net_dev);
688 netif_carrier_off(net_dev);
694 * sis900_default_phy - Select default PHY for sis900 mac.
695 * @net_dev: the net device to probe for
697 * Select first detected PHY with link as default.
698 * If no one is link on, select PHY whose types is HOME as default.
699 * If HOME doesn't exist, select LAN.
702 static u16 sis900_default_phy(struct net_device * net_dev)
704 struct sis900_private * sis_priv = net_dev->priv;
705 struct mii_phy *phy = NULL, *phy_home = NULL,
706 *default_phy = NULL, *phy_lan = NULL;
709 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
710 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
711 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
713 /* Link ON & Not select default PHY & not ghost PHY */
714 if ((status & MII_STAT_LINK) && !default_phy &&
715 (phy->phy_types != UNKNOWN))
718 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
719 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
720 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
721 if (phy->phy_types == HOME)
723 else if(phy->phy_types == LAN)
728 if (!default_phy && phy_home)
729 default_phy = phy_home;
730 else if (!default_phy && phy_lan)
731 default_phy = phy_lan;
732 else if (!default_phy)
733 default_phy = sis_priv->first_mii;
735 if (sis_priv->mii != default_phy) {
736 sis_priv->mii = default_phy;
737 sis_priv->cur_phy = default_phy->phy_addr;
738 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
739 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
742 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
744 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
745 status &= (~MII_CNTL_ISOLATE);
747 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
748 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
749 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
756 * sis900_set_capability - set the media capability of network adapter.
757 * @net_dev : the net device to probe for
760 * Set the media capability of network adapter according to
761 * mii status register. It's necessary before auto-negotiate.
764 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
769 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
770 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
772 cap = MII_NWAY_CSMA_CD |
773 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
774 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
775 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
776 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
778 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
782 /* Delay between EEPROM clock transitions. */
783 #define eeprom_delay() inl(ee_addr)
786 * read_eeprom - Read Serial EEPROM
787 * @ioaddr: base i/o address
788 * @location: the EEPROM location to read
790 * Read Serial EEPROM through EEPROM Access Register.
791 * Note that location is in word (16 bits) unit
794 static u16 __devinit read_eeprom(long ioaddr, int location)
798 long ee_addr = ioaddr + mear;
799 u32 read_cmd = location | EEread;
806 /* Shift the read command (9) bits out. */
807 for (i = 8; i >= 0; i--) {
808 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
809 outl(dataval, ee_addr);
811 outl(dataval | EECLK, ee_addr);
817 /* read the 16-bits data in */
818 for (i = 16; i > 0; i--) {
821 outl(EECS | EECLK, ee_addr);
823 retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
827 /* Terminate the EEPROM access. */
834 /* Read and write the MII management registers using software-generated
835 serial MDIO protocol. Note that the command bits and data bits are
836 send out separately */
837 #define mdio_delay() inl(mdio_addr)
839 static void mdio_idle(long mdio_addr)
841 outl(MDIO | MDDIR, mdio_addr);
843 outl(MDIO | MDDIR | MDC, mdio_addr);
846 /* Syncronize the MII management interface by shifting 32 one bits out. */
847 static void mdio_reset(long mdio_addr)
851 for (i = 31; i >= 0; i--) {
852 outl(MDDIR | MDIO, mdio_addr);
854 outl(MDDIR | MDIO | MDC, mdio_addr);
861 * mdio_read - read MII PHY register
862 * @net_dev: the net device to read
863 * @phy_id: the phy address to read
864 * @location: the phy regiester id to read
866 * Read MII registers through MDIO and MDC
867 * using MDIO management frame structure and protocol(defined by ISO/IEC).
868 * Please see SiS7014 or ICS spec
871 static int mdio_read(struct net_device *net_dev, int phy_id, int location)
873 long mdio_addr = net_dev->base_addr + mear;
874 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
878 mdio_reset(mdio_addr);
879 mdio_idle(mdio_addr);
881 for (i = 15; i >= 0; i--) {
882 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
883 outl(dataval, mdio_addr);
885 outl(dataval | MDC, mdio_addr);
889 /* Read the 16 data bits. */
890 for (i = 16; i > 0; i--) {
893 retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
894 outl(MDC, mdio_addr);
897 outl(0x00, mdio_addr);
903 * mdio_write - write MII PHY register
904 * @net_dev: the net device to write
905 * @phy_id: the phy address to write
906 * @location: the phy regiester id to write
907 * @value: the register value to write with
909 * Write MII registers with @value through MDIO and MDC
910 * using MDIO management frame structure and protocol(defined by ISO/IEC)
911 * please see SiS7014 or ICS spec
914 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
917 long mdio_addr = net_dev->base_addr + mear;
918 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
921 mdio_reset(mdio_addr);
922 mdio_idle(mdio_addr);
924 /* Shift the command bits out. */
925 for (i = 15; i >= 0; i--) {
926 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
927 outb(dataval, mdio_addr);
929 outb(dataval | MDC, mdio_addr);
934 /* Shift the value bits out. */
935 for (i = 15; i >= 0; i--) {
936 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
937 outl(dataval, mdio_addr);
939 outl(dataval | MDC, mdio_addr);
944 /* Clear out extra bits. */
945 for (i = 2; i > 0; i--) {
948 outb(MDC, mdio_addr);
951 outl(0x00, mdio_addr);
958 * sis900_reset_phy - reset sis900 mii phy.
959 * @net_dev: the net device to write
960 * @phy_addr: default phy address
962 * Some specific phy can't work properly without reset.
963 * This function will be called during initialization and
964 * link status change from ON to DOWN.
967 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
973 status = mdio_read(net_dev, phy_addr, MII_STATUS);
975 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
980 #ifdef CONFIG_NET_POLL_CONTROLLER
982 * Polling 'interrupt' - used by things like netconsole to send skbs
983 * without having to re-enable interrupts. It's not called while
984 * the interrupt routine is executing.
986 static void sis900_poll(struct net_device *dev)
988 disable_irq(dev->irq);
989 sis900_interrupt(dev->irq, dev, NULL);
990 enable_irq(dev->irq);
995 * sis900_open - open sis900 device
996 * @net_dev: the net device to open
998 * Do some initialization and start net interface.
999 * enable interrupts and set sis900 timer.
1003 sis900_open(struct net_device *net_dev)
1005 struct sis900_private *sis_priv = net_dev->priv;
1006 long ioaddr = net_dev->base_addr;
1009 /* Soft reset the chip. */
1010 sis900_reset(net_dev);
1012 /* Equalizer workaround Rule */
1013 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1015 ret = request_irq(net_dev->irq, &sis900_interrupt, SA_SHIRQ,
1016 net_dev->name, net_dev);
1020 sis900_init_rxfilter(net_dev);
1022 sis900_init_tx_ring(net_dev);
1023 sis900_init_rx_ring(net_dev);
1025 set_rx_mode(net_dev);
1027 netif_start_queue(net_dev);
1029 /* Workaround for EDB */
1030 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1032 /* Enable all known interrupts by setting the interrupt mask. */
1033 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1034 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
1035 outl(IE, ioaddr + ier);
1037 sis900_check_mode(net_dev, sis_priv->mii);
1039 /* Set the timer to switch to check for link beat and perhaps switch
1040 to an alternate media type. */
1041 init_timer(&sis_priv->timer);
1042 sis_priv->timer.expires = jiffies + HZ;
1043 sis_priv->timer.data = (unsigned long)net_dev;
1044 sis_priv->timer.function = &sis900_timer;
1045 add_timer(&sis_priv->timer);
1051 * sis900_init_rxfilter - Initialize the Rx filter
1052 * @net_dev: the net device to initialize for
1054 * Set receive filter address to our MAC address
1055 * and enable packet filtering.
1059 sis900_init_rxfilter (struct net_device * net_dev)
1061 struct sis900_private *sis_priv = net_dev->priv;
1062 long ioaddr = net_dev->base_addr;
1066 rfcrSave = inl(rfcr + ioaddr);
1068 /* disable packet filtering before setting filter */
1069 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
1071 /* load MAC addr to filter data register */
1072 for (i = 0 ; i < 3 ; i++) {
1075 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1076 outl((i << RFADDR_shift), ioaddr + rfcr);
1077 outl(w, ioaddr + rfdr);
1079 if (netif_msg_hw(sis_priv)) {
1080 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1081 net_dev->name, i, inl(ioaddr + rfdr));
1085 /* enable packet filtering */
1086 outl(rfcrSave | RFEN, rfcr + ioaddr);
1090 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1091 * @net_dev: the net device to initialize for
1093 * Initialize the Tx descriptor ring,
1097 sis900_init_tx_ring(struct net_device *net_dev)
1099 struct sis900_private *sis_priv = net_dev->priv;
1100 long ioaddr = net_dev->base_addr;
1103 sis_priv->tx_full = 0;
1104 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1106 for (i = 0; i < NUM_TX_DESC; i++) {
1107 sis_priv->tx_skbuff[i] = NULL;
1109 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1110 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1111 sis_priv->tx_ring[i].cmdsts = 0;
1112 sis_priv->tx_ring[i].bufptr = 0;
1115 /* load Transmit Descriptor Register */
1116 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1117 if (netif_msg_hw(sis_priv))
1118 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1119 net_dev->name, inl(ioaddr + txdp));
1123 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1124 * @net_dev: the net device to initialize for
1126 * Initialize the Rx descriptor ring,
1127 * and pre-allocate recevie buffers (socket buffer)
1131 sis900_init_rx_ring(struct net_device *net_dev)
1133 struct sis900_private *sis_priv = net_dev->priv;
1134 long ioaddr = net_dev->base_addr;
1137 sis_priv->cur_rx = 0;
1138 sis_priv->dirty_rx = 0;
1140 /* init RX descriptor */
1141 for (i = 0; i < NUM_RX_DESC; i++) {
1142 sis_priv->rx_skbuff[i] = NULL;
1144 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1145 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1146 sis_priv->rx_ring[i].cmdsts = 0;
1147 sis_priv->rx_ring[i].bufptr = 0;
1150 /* allocate sock buffers */
1151 for (i = 0; i < NUM_RX_DESC; i++) {
1152 struct sk_buff *skb;
1154 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1155 /* not enough memory for skbuff, this makes a "hole"
1156 on the buffer ring, it is not clear how the
1157 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 outl (tx_flags, ioaddr + txcfg);
1406 outl (rx_flags, ioaddr + rxcfg);
1410 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1411 * @net_dev: the net device to read mode for
1412 * @phy_addr: mii phy address
1414 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1415 * autong_complete should be set to 0 when starting auto-negotiation.
1416 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1417 * sis900_timer will wait for link on again if autong_complete = 0.
1420 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1422 struct sis900_private *sis_priv = net_dev->priv;
1427 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1429 if (!(status & MII_STAT_LINK)){
1430 if(netif_msg_link(sis_priv))
1431 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1432 sis_priv->autong_complete = 1;
1433 netif_carrier_off(net_dev);
1437 /* (Re)start AutoNegotiate */
1438 mdio_write(net_dev, phy_addr, MII_CONTROL,
1439 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1440 sis_priv->autong_complete = 0;
1445 * sis900_read_mode - read media mode for sis900 internal phy
1446 * @net_dev: the net device to read mode for
1447 * @speed : the transmit speed to be determined
1448 * @duplex : the duplex mode to be determined
1450 * The capability of remote end will be put in mii register autorec
1451 * after auto-negotiation. Use AND operation to get the upper bound
1452 * of speed and duplex between two ends.
1455 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1457 struct sis900_private *sis_priv = net_dev->priv;
1458 struct mii_phy *phy = sis_priv->mii;
1459 int phy_addr = sis_priv->cur_phy;
1461 u16 autoadv, autorec;
1465 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1467 if (!(status & MII_STAT_LINK))
1470 /* AutoNegotiate completed */
1471 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1472 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1473 status = autoadv & autorec;
1475 *speed = HW_SPEED_10_MBPS;
1476 *duplex = FDX_CAPABLE_HALF_SELECTED;
1478 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1479 *speed = HW_SPEED_100_MBPS;
1480 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1481 *duplex = FDX_CAPABLE_FULL_SELECTED;
1483 sis_priv->autong_complete = 1;
1485 /* Workaround for Realtek RTL8201 PHY issue */
1486 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1487 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1488 *duplex = FDX_CAPABLE_FULL_SELECTED;
1489 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1490 *speed = HW_SPEED_100_MBPS;
1493 if(netif_msg_link(sis_priv))
1494 printk(KERN_INFO "%s: Media Link On %s %s-duplex \n",
1496 *speed == HW_SPEED_100_MBPS ?
1497 "100mbps" : "10mbps",
1498 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1503 * sis900_tx_timeout - sis900 transmit timeout routine
1504 * @net_dev: the net device to transmit
1506 * print transmit timeout status
1507 * disable interrupts and do some tasks
1510 static void sis900_tx_timeout(struct net_device *net_dev)
1512 struct sis900_private *sis_priv = net_dev->priv;
1513 long ioaddr = net_dev->base_addr;
1514 unsigned long flags;
1517 if(netif_msg_tx_err(sis_priv))
1518 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x \n",
1519 net_dev->name, inl(ioaddr + cr), inl(ioaddr + isr));
1521 /* Disable interrupts by clearing the interrupt mask. */
1522 outl(0x0000, ioaddr + imr);
1524 /* use spinlock to prevent interrupt handler accessing buffer ring */
1525 spin_lock_irqsave(&sis_priv->lock, flags);
1527 /* discard unsent packets */
1528 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1529 for (i = 0; i < NUM_TX_DESC; i++) {
1530 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1533 pci_unmap_single(sis_priv->pci_dev,
1534 sis_priv->tx_ring[i].bufptr, skb->len,
1536 dev_kfree_skb_irq(skb);
1537 sis_priv->tx_skbuff[i] = NULL;
1538 sis_priv->tx_ring[i].cmdsts = 0;
1539 sis_priv->tx_ring[i].bufptr = 0;
1540 sis_priv->stats.tx_dropped++;
1543 sis_priv->tx_full = 0;
1544 netif_wake_queue(net_dev);
1546 spin_unlock_irqrestore(&sis_priv->lock, flags);
1548 net_dev->trans_start = jiffies;
1550 /* load Transmit Descriptor Register */
1551 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1553 /* Enable all known interrupts by setting the interrupt mask. */
1554 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1559 * sis900_start_xmit - sis900 start transmit routine
1560 * @skb: socket buffer pointer to put the data being transmitted
1561 * @net_dev: the net device to transmit with
1563 * Set the transmit buffer descriptor,
1564 * and write TxENA to enable transmit state machine.
1565 * tell upper layer if the buffer is full
1569 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1571 struct sis900_private *sis_priv = net_dev->priv;
1572 long ioaddr = net_dev->base_addr;
1574 unsigned long flags;
1575 unsigned int index_cur_tx, index_dirty_tx;
1576 unsigned int count_dirty_tx;
1578 /* Don't transmit data before the complete of auto-negotiation */
1579 if(!sis_priv->autong_complete){
1580 netif_stop_queue(net_dev);
1584 spin_lock_irqsave(&sis_priv->lock, flags);
1586 /* Calculate the next Tx descriptor entry. */
1587 entry = sis_priv->cur_tx % NUM_TX_DESC;
1588 sis_priv->tx_skbuff[entry] = skb;
1590 /* set the transmit buffer descriptor and enable Transmit State Machine */
1591 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1592 skb->data, skb->len, PCI_DMA_TODEVICE);
1593 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1594 outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
1596 sis_priv->cur_tx ++;
1597 index_cur_tx = sis_priv->cur_tx;
1598 index_dirty_tx = sis_priv->dirty_tx;
1600 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1603 if (index_cur_tx == index_dirty_tx) {
1604 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1605 sis_priv->tx_full = 1;
1606 netif_stop_queue(net_dev);
1607 } else if (count_dirty_tx < NUM_TX_DESC) {
1608 /* Typical path, tell upper layer that more transmission is possible */
1609 netif_start_queue(net_dev);
1611 /* buffer full, tell upper layer no more transmission */
1612 sis_priv->tx_full = 1;
1613 netif_stop_queue(net_dev);
1616 spin_unlock_irqrestore(&sis_priv->lock, flags);
1618 net_dev->trans_start = jiffies;
1620 if (netif_msg_tx_queued(sis_priv))
1621 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1623 net_dev->name, skb->data, (int)skb->len, entry);
1629 * sis900_interrupt - sis900 interrupt handler
1630 * @irq: the irq number
1631 * @dev_instance: the client data object
1632 * @regs: snapshot of processor context
1634 * The interrupt handler does all of the Rx thread work,
1635 * and cleans up after the Tx thread
1638 static irqreturn_t sis900_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
1640 struct net_device *net_dev = dev_instance;
1641 struct sis900_private *sis_priv = net_dev->priv;
1642 int boguscnt = max_interrupt_work;
1643 long ioaddr = net_dev->base_addr;
1645 unsigned int handled = 0;
1647 spin_lock (&sis_priv->lock);
1650 status = inl(ioaddr + isr);
1652 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1653 /* nothing intresting happened */
1657 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1658 if (status & (RxORN | RxERR | RxOK))
1662 if (status & (TxURN | TxERR | TxIDLE))
1664 sis900_finish_xmit(net_dev);
1666 /* something strange happened !!! */
1667 if (status & HIBERR) {
1668 if(netif_msg_intr(sis_priv))
1669 printk(KERN_INFO "%s: Abnormal interrupt,"
1670 "status %#8.8x.\n", net_dev->name, status);
1673 if (--boguscnt < 0) {
1674 if(netif_msg_intr(sis_priv))
1675 printk(KERN_INFO "%s: Too much work at interrupt, "
1676 "interrupt status = %#8.8x.\n",
1677 net_dev->name, status);
1682 if(netif_msg_intr(sis_priv))
1683 printk(KERN_DEBUG "%s: exiting interrupt, "
1684 "interrupt status = 0x%#8.8x.\n",
1685 net_dev->name, inl(ioaddr + isr));
1687 spin_unlock (&sis_priv->lock);
1688 return IRQ_RETVAL(handled);
1692 * sis900_rx - sis900 receive routine
1693 * @net_dev: the net device which receives data
1695 * Process receive interrupt events,
1696 * put buffer to higher layer and refill buffer pool
1697 * Note: This function is called by interrupt handler,
1698 * don't do "too much" work here
1701 static int sis900_rx(struct net_device *net_dev)
1703 struct sis900_private *sis_priv = net_dev->priv;
1704 long ioaddr = net_dev->base_addr;
1705 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1706 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1709 if (netif_msg_rx_status(sis_priv))
1710 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1712 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1713 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
1715 while (rx_status & OWN) {
1716 unsigned int rx_size;
1718 if (--rx_work_limit < 0)
1721 rx_size = (rx_status & DSIZE) - CRC_SIZE;
1723 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1724 /* corrupted packet received */
1725 if (netif_msg_rx_err(sis_priv))
1726 printk(KERN_DEBUG "%s: Corrupted packet "
1727 "received, buffer status = 0x%8.8x.\n",
1728 net_dev->name, rx_status);
1729 sis_priv->stats.rx_errors++;
1730 if (rx_status & OVERRUN)
1731 sis_priv->stats.rx_over_errors++;
1732 if (rx_status & (TOOLONG|RUNT))
1733 sis_priv->stats.rx_length_errors++;
1734 if (rx_status & (RXISERR | FAERR))
1735 sis_priv->stats.rx_frame_errors++;
1736 if (rx_status & CRCERR)
1737 sis_priv->stats.rx_crc_errors++;
1738 /* reset buffer descriptor state */
1739 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1741 struct sk_buff * skb;
1743 /* This situation should never happen, but due to
1744 some unknow bugs, it is possible that
1745 we are working on NULL sk_buff :-( */
1746 if (sis_priv->rx_skbuff[entry] == NULL) {
1747 if (netif_msg_rx_err(sis_priv))
1748 printk(KERN_WARNING "%s: NULL pointer "
1749 "encountered in Rx ring\n"
1750 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1751 net_dev->name, sis_priv->cur_rx,
1752 sis_priv->dirty_rx);
1756 pci_unmap_single(sis_priv->pci_dev,
1757 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1758 PCI_DMA_FROMDEVICE);
1759 /* give the socket buffer to upper layers */
1760 skb = sis_priv->rx_skbuff[entry];
1761 skb_put(skb, rx_size);
1762 skb->protocol = eth_type_trans(skb, net_dev);
1765 /* some network statistics */
1766 if ((rx_status & BCAST) == MCAST)
1767 sis_priv->stats.multicast++;
1768 net_dev->last_rx = jiffies;
1769 sis_priv->stats.rx_bytes += rx_size;
1770 sis_priv->stats.rx_packets++;
1772 /* refill the Rx buffer, what if there is not enought
1773 * memory for new socket buffer ?? */
1774 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1775 /* not enough memory for skbuff, this makes a
1776 * "hole" on the buffer ring, it is not clear
1777 * how the hardware will react to this kind
1778 * of degenerated buffer */
1779 if (netif_msg_rx_status(sis_priv))
1780 printk(KERN_INFO "%s: Memory squeeze,"
1781 "deferring packet.\n",
1783 sis_priv->rx_skbuff[entry] = NULL;
1784 /* reset buffer descriptor state */
1785 sis_priv->rx_ring[entry].cmdsts = 0;
1786 sis_priv->rx_ring[entry].bufptr = 0;
1787 sis_priv->stats.rx_dropped++;
1792 sis_priv->rx_skbuff[entry] = skb;
1793 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1794 sis_priv->rx_ring[entry].bufptr =
1795 pci_map_single(sis_priv->pci_dev, skb->data,
1796 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1797 sis_priv->dirty_rx++;
1800 entry = sis_priv->cur_rx % NUM_RX_DESC;
1801 rx_status = sis_priv->rx_ring[entry].cmdsts;
1804 /* refill the Rx buffer, what if the rate of refilling is slower
1805 * than consuming ?? */
1806 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
1807 struct sk_buff *skb;
1809 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1811 if (sis_priv->rx_skbuff[entry] == NULL) {
1812 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1813 /* not enough memory for skbuff, this makes a
1814 * "hole" on the buffer ring, it is not clear
1815 * how the hardware will react to this kind
1816 * of degenerated buffer */
1817 if (netif_msg_rx_err(sis_priv))
1818 printk(KERN_INFO "%s: Memory squeeze,"
1819 "deferring packet.\n",
1821 sis_priv->stats.rx_dropped++;
1825 sis_priv->rx_skbuff[entry] = skb;
1826 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1827 sis_priv->rx_ring[entry].bufptr =
1828 pci_map_single(sis_priv->pci_dev, skb->data,
1829 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1832 /* re-enable the potentially idle receive state matchine */
1833 outl(RxENA | inl(ioaddr + cr), ioaddr + cr );
1839 * sis900_finish_xmit - finish up transmission of packets
1840 * @net_dev: the net device to be transmitted on
1842 * Check for error condition and free socket buffer etc
1843 * schedule for more transmission as needed
1844 * Note: This function is called by interrupt handler,
1845 * don't do "too much" work here
1848 static void sis900_finish_xmit (struct net_device *net_dev)
1850 struct sis900_private *sis_priv = net_dev->priv;
1852 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1853 struct sk_buff *skb;
1857 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1858 tx_status = sis_priv->tx_ring[entry].cmdsts;
1860 if (tx_status & OWN) {
1861 /* The packet is not transmitted yet (owned by hardware) !
1862 * Note: the interrupt is generated only when Tx Machine
1863 * is idle, so this is an almost impossible case */
1867 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1868 /* packet unsuccessfully transmitted */
1869 if (netif_msg_tx_err(sis_priv))
1870 printk(KERN_DEBUG "%s: Transmit "
1871 "error, Tx status %8.8x.\n",
1872 net_dev->name, tx_status);
1873 sis_priv->stats.tx_errors++;
1874 if (tx_status & UNDERRUN)
1875 sis_priv->stats.tx_fifo_errors++;
1876 if (tx_status & ABORT)
1877 sis_priv->stats.tx_aborted_errors++;
1878 if (tx_status & NOCARRIER)
1879 sis_priv->stats.tx_carrier_errors++;
1880 if (tx_status & OWCOLL)
1881 sis_priv->stats.tx_window_errors++;
1883 /* packet successfully transmitted */
1884 sis_priv->stats.collisions += (tx_status & COLCNT) >> 16;
1885 sis_priv->stats.tx_bytes += tx_status & DSIZE;
1886 sis_priv->stats.tx_packets++;
1888 /* Free the original skb. */
1889 skb = sis_priv->tx_skbuff[entry];
1890 pci_unmap_single(sis_priv->pci_dev,
1891 sis_priv->tx_ring[entry].bufptr, skb->len,
1893 dev_kfree_skb_irq(skb);
1894 sis_priv->tx_skbuff[entry] = NULL;
1895 sis_priv->tx_ring[entry].bufptr = 0;
1896 sis_priv->tx_ring[entry].cmdsts = 0;
1899 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1900 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1901 /* The ring is no longer full, clear tx_full and schedule
1902 * more transmission by netif_wake_queue(net_dev) */
1903 sis_priv->tx_full = 0;
1904 netif_wake_queue (net_dev);
1909 * sis900_close - close sis900 device
1910 * @net_dev: the net device to be closed
1912 * Disable interrupts, stop the Tx and Rx Status Machine
1913 * free Tx and RX socket buffer
1916 static int sis900_close(struct net_device *net_dev)
1918 long ioaddr = net_dev->base_addr;
1919 struct sis900_private *sis_priv = net_dev->priv;
1920 struct sk_buff *skb;
1923 netif_stop_queue(net_dev);
1925 /* Disable interrupts by clearing the interrupt mask. */
1926 outl(0x0000, ioaddr + imr);
1927 outl(0x0000, ioaddr + ier);
1929 /* Stop the chip's Tx and Rx Status Machine */
1930 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
1932 del_timer(&sis_priv->timer);
1934 free_irq(net_dev->irq, net_dev);
1936 /* Free Tx and RX skbuff */
1937 for (i = 0; i < NUM_RX_DESC; i++) {
1938 skb = sis_priv->rx_skbuff[i];
1940 pci_unmap_single(sis_priv->pci_dev,
1941 sis_priv->rx_ring[i].bufptr,
1942 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1944 sis_priv->rx_skbuff[i] = NULL;
1947 for (i = 0; i < NUM_TX_DESC; i++) {
1948 skb = sis_priv->tx_skbuff[i];
1950 pci_unmap_single(sis_priv->pci_dev,
1951 sis_priv->tx_ring[i].bufptr, skb->len,
1954 sis_priv->tx_skbuff[i] = NULL;
1958 /* Green! Put the chip in low-power mode. */
1964 * sis900_get_drvinfo - Return information about driver
1965 * @net_dev: the net device to probe
1966 * @info: container for info returned
1968 * Process ethtool command such as "ehtool -i" to show information
1971 static void sis900_get_drvinfo(struct net_device *net_dev,
1972 struct ethtool_drvinfo *info)
1974 struct sis900_private *sis_priv = net_dev->priv;
1976 strcpy (info->driver, SIS900_MODULE_NAME);
1977 strcpy (info->version, SIS900_DRV_VERSION);
1978 strcpy (info->bus_info, pci_name(sis_priv->pci_dev));
1981 static u32 sis900_get_msglevel(struct net_device *net_dev)
1983 struct sis900_private *sis_priv = net_dev->priv;
1984 return sis_priv->msg_enable;
1987 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
1989 struct sis900_private *sis_priv = net_dev->priv;
1990 sis_priv->msg_enable = value;
1993 static u32 sis900_get_link(struct net_device *net_dev)
1995 struct sis900_private *sis_priv = net_dev->priv;
1996 return mii_link_ok(&sis_priv->mii_info);
1999 static int sis900_get_settings(struct net_device *net_dev,
2000 struct ethtool_cmd *cmd)
2002 struct sis900_private *sis_priv = net_dev->priv;
2003 spin_lock_irq(&sis_priv->lock);
2004 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2005 spin_unlock_irq(&sis_priv->lock);
2009 static int sis900_set_settings(struct net_device *net_dev,
2010 struct ethtool_cmd *cmd)
2012 struct sis900_private *sis_priv = net_dev->priv;
2014 spin_lock_irq(&sis_priv->lock);
2015 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2016 spin_unlock_irq(&sis_priv->lock);
2020 static int sis900_nway_reset(struct net_device *net_dev)
2022 struct sis900_private *sis_priv = net_dev->priv;
2023 return mii_nway_restart(&sis_priv->mii_info);
2027 * sis900_set_wol - Set up Wake on Lan registers
2028 * @net_dev: the net device to probe
2029 * @wol: container for info passed to the driver
2031 * Process ethtool command "wol" to setup wake on lan features.
2032 * SiS900 supports sending WoL events if a correct packet is received,
2033 * but there is no simple way to filter them to only a subset (broadcast,
2034 * multicast, unicast or arp).
2037 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2039 struct sis900_private *sis_priv = net_dev->priv;
2040 long pmctrl_addr = net_dev->base_addr + pmctrl;
2041 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2043 if (wol->wolopts == 0) {
2044 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2045 cfgpmcsr &= ~PME_EN;
2046 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2047 outl(pmctrl_bits, pmctrl_addr);
2048 if (netif_msg_wol(sis_priv))
2049 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2053 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2054 | WAKE_BCAST | WAKE_ARP))
2057 if (wol->wolopts & WAKE_MAGIC)
2058 pmctrl_bits |= MAGICPKT;
2059 if (wol->wolopts & WAKE_PHY)
2060 pmctrl_bits |= LINKON;
2062 outl(pmctrl_bits, pmctrl_addr);
2064 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2066 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2067 if (netif_msg_wol(sis_priv))
2068 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2073 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2075 long pmctrl_addr = net_dev->base_addr + pmctrl;
2078 pmctrl_bits = inl(pmctrl_addr);
2079 if (pmctrl_bits & MAGICPKT)
2080 wol->wolopts |= WAKE_MAGIC;
2081 if (pmctrl_bits & LINKON)
2082 wol->wolopts |= WAKE_PHY;
2084 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2087 static struct ethtool_ops sis900_ethtool_ops = {
2088 .get_drvinfo = sis900_get_drvinfo,
2089 .get_msglevel = sis900_get_msglevel,
2090 .set_msglevel = sis900_set_msglevel,
2091 .get_link = sis900_get_link,
2092 .get_settings = sis900_get_settings,
2093 .set_settings = sis900_set_settings,
2094 .nway_reset = sis900_nway_reset,
2095 .get_wol = sis900_get_wol,
2096 .set_wol = sis900_set_wol
2100 * mii_ioctl - process MII i/o control command
2101 * @net_dev: the net device to command for
2102 * @rq: parameter for command
2103 * @cmd: the i/o command
2105 * Process MII command like read/write MII register
2108 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2110 struct sis900_private *sis_priv = net_dev->priv;
2111 struct mii_ioctl_data *data = if_mii(rq);
2114 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2115 data->phy_id = sis_priv->mii->phy_addr;
2118 case SIOCGMIIREG: /* Read MII PHY register. */
2119 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2122 case SIOCSMIIREG: /* Write MII PHY register. */
2123 if (!capable(CAP_NET_ADMIN))
2125 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2133 * sis900_get_stats - Get sis900 read/write statistics
2134 * @net_dev: the net device to get statistics for
2136 * get tx/rx statistics for sis900
2139 static struct net_device_stats *
2140 sis900_get_stats(struct net_device *net_dev)
2142 struct sis900_private *sis_priv = net_dev->priv;
2144 return &sis_priv->stats;
2148 * sis900_set_config - Set media type by net_device.set_config
2149 * @dev: the net device for media type change
2150 * @map: ifmap passed by ifconfig
2152 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2153 * we support only port changes. All other runtime configuration
2154 * changes will be ignored
2157 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2159 struct sis900_private *sis_priv = dev->priv;
2160 struct mii_phy *mii_phy = sis_priv->mii;
2164 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2165 /* we switch on the ifmap->port field. I couldn't find anything
2166 * like a definition or standard for the values of that field.
2167 * I think the meaning of those values is device specific. But
2168 * since I would like to change the media type via the ifconfig
2169 * command I use the definition from linux/netdevice.h
2170 * (which seems to be different from the ifport(pcmcia) definition) */
2172 case IF_PORT_UNKNOWN: /* use auto here */
2173 dev->if_port = map->port;
2174 /* we are going to change the media type, so the Link
2175 * will be temporary down and we need to reflect that
2176 * here. When the Link comes up again, it will be
2177 * sensed by the sis_timer procedure, which also does
2178 * all the rest for us */
2179 netif_carrier_off(dev);
2181 /* read current state */
2182 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2184 /* enable auto negotiation and reset the negotioation
2185 * (I don't really know what the auto negatiotiation
2186 * reset really means, but it sounds for me right to
2188 mdio_write(dev, mii_phy->phy_addr,
2189 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2193 case IF_PORT_10BASET: /* 10BaseT */
2194 dev->if_port = map->port;
2196 /* we are going to change the media type, so the Link
2197 * will be temporary down and we need to reflect that
2198 * here. When the Link comes up again, it will be
2199 * sensed by the sis_timer procedure, which also does
2200 * all the rest for us */
2201 netif_carrier_off(dev);
2203 /* set Speed to 10Mbps */
2204 /* read current state */
2205 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2207 /* disable auto negotiation and force 10MBit mode*/
2208 mdio_write(dev, mii_phy->phy_addr,
2209 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2213 case IF_PORT_100BASET: /* 100BaseT */
2214 case IF_PORT_100BASETX: /* 100BaseTx */
2215 dev->if_port = map->port;
2217 /* we are going to change the media type, so the Link
2218 * will be temporary down and we need to reflect that
2219 * here. When the Link comes up again, it will be
2220 * sensed by the sis_timer procedure, which also does
2221 * all the rest for us */
2222 netif_carrier_off(dev);
2224 /* set Speed to 100Mbps */
2225 /* disable auto negotiation and enable 100MBit Mode */
2226 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2227 mdio_write(dev, mii_phy->phy_addr,
2228 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2233 case IF_PORT_10BASE2: /* 10Base2 */
2234 case IF_PORT_AUI: /* AUI */
2235 case IF_PORT_100BASEFX: /* 100BaseFx */
2236 /* These Modes are not supported (are they?)*/
2248 * sis900_mcast_bitnr - compute hashtable index
2249 * @addr: multicast address
2250 * @revision: revision id of chip
2252 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2253 * hash table, which makes this function a little bit different from other drivers
2254 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2255 * multicast hash table.
2258 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2261 u32 crc = ether_crc(6, addr);
2263 /* leave 8 or 7 most siginifant bits */
2264 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2265 return ((int)(crc >> 24));
2267 return ((int)(crc >> 25));
2271 * set_rx_mode - Set SiS900 receive mode
2272 * @net_dev: the net device to be set
2274 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2275 * And set the appropriate multicast filter.
2276 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2279 static void set_rx_mode(struct net_device *net_dev)
2281 long ioaddr = net_dev->base_addr;
2282 struct sis900_private * sis_priv = net_dev->priv;
2283 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2284 int i, table_entries;
2287 /* 635 Hash Table entries = 256(2^16) */
2288 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2289 (sis_priv->chipset_rev == SIS900B_900_REV))
2294 if (net_dev->flags & IFF_PROMISC) {
2295 /* Accept any kinds of packets */
2296 rx_mode = RFPromiscuous;
2297 for (i = 0; i < table_entries; i++)
2298 mc_filter[i] = 0xffff;
2299 } else if ((net_dev->mc_count > multicast_filter_limit) ||
2300 (net_dev->flags & IFF_ALLMULTI)) {
2301 /* too many multicast addresses or accept all multicast packet */
2302 rx_mode = RFAAB | RFAAM;
2303 for (i = 0; i < table_entries; i++)
2304 mc_filter[i] = 0xffff;
2306 /* Accept Broadcast packet, destination address matchs our
2307 * MAC address, use Receive Filter to reject unwanted MCAST
2309 struct dev_mc_list *mclist;
2311 for (i = 0, mclist = net_dev->mc_list;
2312 mclist && i < net_dev->mc_count;
2313 i++, mclist = mclist->next) {
2314 unsigned int bit_nr =
2315 sis900_mcast_bitnr(mclist->dmi_addr, sis_priv->chipset_rev);
2316 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2320 /* update Multicast Hash Table in Receive Filter */
2321 for (i = 0; i < table_entries; i++) {
2322 /* why plus 0x04 ??, That makes the correct value for hash table. */
2323 outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr);
2324 outl(mc_filter[i], ioaddr + rfdr);
2327 outl(RFEN | rx_mode, ioaddr + rfcr);
2329 /* sis900 is capable of looping back packets at MAC level for
2330 * debugging purpose */
2331 if (net_dev->flags & IFF_LOOPBACK) {
2333 /* We must disable Tx/Rx before setting loopback mode */
2334 cr_saved = inl(ioaddr + cr);
2335 outl(cr_saved | TxDIS | RxDIS, ioaddr + cr);
2336 /* enable loopback */
2337 outl(inl(ioaddr + txcfg) | TxMLB, ioaddr + txcfg);
2338 outl(inl(ioaddr + rxcfg) | RxATX, ioaddr + rxcfg);
2340 outl(cr_saved, ioaddr + cr);
2347 * sis900_reset - Reset sis900 MAC
2348 * @net_dev: the net device to reset
2350 * reset sis900 MAC and wait until finished
2351 * reset through command register
2352 * change backoff algorithm for 900B0 & 635 M/B
2355 static void sis900_reset(struct net_device *net_dev)
2357 struct sis900_private * sis_priv = net_dev->priv;
2358 long ioaddr = net_dev->base_addr;
2360 u32 status = TxRCMP | RxRCMP;
2362 outl(0, ioaddr + ier);
2363 outl(0, ioaddr + imr);
2364 outl(0, ioaddr + rfcr);
2366 outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr);
2368 /* Check that the chip has finished the reset. */
2369 while (status && (i++ < 1000)) {
2370 status ^= (inl(isr + ioaddr) & status);
2373 if( (sis_priv->chipset_rev >= SIS635A_900_REV) ||
2374 (sis_priv->chipset_rev == SIS900B_900_REV) )
2375 outl(PESEL | RND_CNT, ioaddr + cfg);
2377 outl(PESEL, ioaddr + cfg);
2381 * sis900_remove - Remove sis900 device
2382 * @pci_dev: the pci device to be removed
2384 * remove and release SiS900 net device
2387 static void __devexit sis900_remove(struct pci_dev *pci_dev)
2389 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2390 struct sis900_private * sis_priv = net_dev->priv;
2391 struct mii_phy *phy = NULL;
2393 while (sis_priv->first_mii) {
2394 phy = sis_priv->first_mii;
2395 sis_priv->first_mii = phy->next;
2399 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2400 sis_priv->rx_ring_dma);
2401 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2402 sis_priv->tx_ring_dma);
2403 unregister_netdev(net_dev);
2404 free_netdev(net_dev);
2405 pci_release_regions(pci_dev);
2406 pci_set_drvdata(pci_dev, NULL);
2411 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2413 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2414 long ioaddr = net_dev->base_addr;
2416 if(!netif_running(net_dev))
2419 netif_stop_queue(net_dev);
2420 netif_device_detach(net_dev);
2422 /* Stop the chip's Tx and Rx Status Machine */
2423 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
2425 pci_set_power_state(pci_dev, PCI_D3hot);
2426 pci_save_state(pci_dev);
2431 static int sis900_resume(struct pci_dev *pci_dev)
2433 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2434 struct sis900_private *sis_priv = net_dev->priv;
2435 long ioaddr = net_dev->base_addr;
2437 if(!netif_running(net_dev))
2439 pci_restore_state(pci_dev);
2440 pci_set_power_state(pci_dev, PCI_D0);
2442 sis900_init_rxfilter(net_dev);
2444 sis900_init_tx_ring(net_dev);
2445 sis900_init_rx_ring(net_dev);
2447 set_rx_mode(net_dev);
2449 netif_device_attach(net_dev);
2450 netif_start_queue(net_dev);
2452 /* Workaround for EDB */
2453 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2455 /* Enable all known interrupts by setting the interrupt mask. */
2456 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
2457 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
2458 outl(IE, ioaddr + ier);
2460 sis900_check_mode(net_dev, sis_priv->mii);
2464 #endif /* CONFIG_PM */
2466 static struct pci_driver sis900_pci_driver = {
2467 .name = SIS900_MODULE_NAME,
2468 .id_table = sis900_pci_tbl,
2469 .probe = sis900_probe,
2470 .remove = __devexit_p(sis900_remove),
2472 .suspend = sis900_suspend,
2473 .resume = sis900_resume,
2474 #endif /* CONFIG_PM */
2477 static int __init sis900_init_module(void)
2479 /* when a module, this is printed whether or not devices are found in probe */
2484 return pci_module_init(&sis900_pci_driver);
2487 static void __exit sis900_cleanup_module(void)
2489 pci_unregister_driver(&sis900_pci_driver);
2492 module_init(sis900_init_module);
2493 module_exit(sis900_cleanup_module);