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 pci_dev * pci_dev;
165 struct mii_phy * mii;
166 struct mii_phy * first_mii; /* record the first mii structure */
167 unsigned int cur_phy;
168 struct mii_if_info mii_info;
170 struct timer_list timer; /* Link status detection timer. */
171 u8 autong_complete; /* 1: auto-negotiate complete */
175 unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
176 unsigned int cur_tx, dirty_tx;
178 /* The saved address of a sent/receive-in-place packet buffer */
179 struct sk_buff *tx_skbuff[NUM_TX_DESC];
180 struct sk_buff *rx_skbuff[NUM_RX_DESC];
184 dma_addr_t tx_ring_dma;
185 dma_addr_t rx_ring_dma;
187 unsigned int tx_full; /* The Tx queue is full. */
192 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
193 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
194 MODULE_LICENSE("GPL");
196 module_param(multicast_filter_limit, int, 0444);
197 module_param(max_interrupt_work, int, 0444);
198 module_param(sis900_debug, int, 0444);
199 MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
200 MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
201 MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
203 #ifdef CONFIG_NET_POLL_CONTROLLER
204 static void sis900_poll(struct net_device *dev);
206 static int sis900_open(struct net_device *net_dev);
207 static int sis900_mii_probe (struct net_device * net_dev);
208 static void sis900_init_rxfilter (struct net_device * net_dev);
209 static u16 read_eeprom(long ioaddr, int location);
210 static int mdio_read(struct net_device *net_dev, int phy_id, int location);
211 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
212 static void sis900_timer(unsigned long data);
213 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
214 static void sis900_tx_timeout(struct net_device *net_dev);
215 static void sis900_init_tx_ring(struct net_device *net_dev);
216 static void sis900_init_rx_ring(struct net_device *net_dev);
217 static int sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
218 static int sis900_rx(struct net_device *net_dev);
219 static void sis900_finish_xmit (struct net_device *net_dev);
220 static irqreturn_t sis900_interrupt(int irq, void *dev_instance);
221 static int sis900_close(struct net_device *net_dev);
222 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
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 const 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_NETDEV_DEV(net_dev, &pci_dev->dev);
433 /* We do a request_region() to register /proc/ioports info. */
434 ioaddr = pci_resource_start(pci_dev, 0);
435 ret = pci_request_regions(pci_dev, "sis900");
439 sis_priv = netdev_priv(net_dev);
440 net_dev->base_addr = ioaddr;
441 net_dev->irq = pci_dev->irq;
442 sis_priv->pci_dev = pci_dev;
443 spin_lock_init(&sis_priv->lock);
445 pci_set_drvdata(pci_dev, net_dev);
447 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
450 goto err_out_cleardev;
452 sis_priv->tx_ring = (BufferDesc *)ring_space;
453 sis_priv->tx_ring_dma = ring_dma;
455 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
460 sis_priv->rx_ring = (BufferDesc *)ring_space;
461 sis_priv->rx_ring_dma = ring_dma;
463 /* The SiS900-specific entries in the device structure. */
464 net_dev->open = &sis900_open;
465 net_dev->hard_start_xmit = &sis900_start_xmit;
466 net_dev->stop = &sis900_close;
467 net_dev->set_config = &sis900_set_config;
468 net_dev->set_multicast_list = &set_rx_mode;
469 net_dev->do_ioctl = &mii_ioctl;
470 net_dev->tx_timeout = sis900_tx_timeout;
471 net_dev->watchdog_timeo = TX_TIMEOUT;
472 net_dev->ethtool_ops = &sis900_ethtool_ops;
474 #ifdef CONFIG_NET_POLL_CONTROLLER
475 net_dev->poll_controller = &sis900_poll;
478 if (sis900_debug > 0)
479 sis_priv->msg_enable = sis900_debug;
481 sis_priv->msg_enable = SIS900_DEF_MSG;
483 sis_priv->mii_info.dev = net_dev;
484 sis_priv->mii_info.mdio_read = mdio_read;
485 sis_priv->mii_info.mdio_write = mdio_write;
486 sis_priv->mii_info.phy_id_mask = 0x1f;
487 sis_priv->mii_info.reg_num_mask = 0x1f;
489 /* Get Mac address according to the chip revision */
490 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &(sis_priv->chipset_rev));
491 if(netif_msg_probe(sis_priv))
492 printk(KERN_DEBUG "%s: detected revision %2.2x, "
493 "trying to get MAC address...\n",
494 dev_name, sis_priv->chipset_rev);
497 if (sis_priv->chipset_rev == SIS630E_900_REV)
498 ret = sis630e_get_mac_addr(pci_dev, net_dev);
499 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
500 ret = sis635_get_mac_addr(pci_dev, net_dev);
501 else if (sis_priv->chipset_rev == SIS96x_900_REV)
502 ret = sis96x_get_mac_addr(pci_dev, net_dev);
504 ret = sis900_get_mac_addr(pci_dev, net_dev);
507 printk(KERN_WARNING "%s: Cannot read MAC address.\n", dev_name);
512 /* 630ET : set the mii access mode as software-mode */
513 if (sis_priv->chipset_rev == SIS630ET_900_REV)
514 outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
516 /* probe for mii transceiver */
517 if (sis900_mii_probe(net_dev) == 0) {
518 printk(KERN_WARNING "%s: Error probing MII device.\n",
524 /* save our host bridge revision */
525 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
527 pci_read_config_byte(dev, PCI_CLASS_REVISION, &sis_priv->host_bridge_rev);
531 ret = register_netdev(net_dev);
535 /* print some information about our NIC */
536 printk(KERN_INFO "%s: %s at %#lx, IRQ %d, %pM\n",
537 net_dev->name, card_name, ioaddr, net_dev->irq,
540 /* Detect Wake on Lan support */
541 ret = (inl(net_dev->base_addr + CFGPMC) & PMESP) >> 27;
542 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
543 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
548 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
549 sis_priv->rx_ring_dma);
551 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
552 sis_priv->tx_ring_dma);
554 pci_set_drvdata(pci_dev, NULL);
555 pci_release_regions(pci_dev);
557 free_netdev(net_dev);
562 * sis900_mii_probe - Probe MII PHY for sis900
563 * @net_dev: the net device to probe for
565 * Search for total of 32 possible mii phy addresses.
566 * Identify and set current phy if found one,
567 * return error if it failed to found.
570 static int __devinit sis900_mii_probe(struct net_device * net_dev)
572 struct sis900_private *sis_priv = netdev_priv(net_dev);
573 const char *dev_name = pci_name(sis_priv->pci_dev);
574 u16 poll_bit = MII_STAT_LINK, status = 0;
575 unsigned long timeout = jiffies + 5 * HZ;
578 sis_priv->mii = NULL;
580 /* search for total of 32 possible mii phy addresses */
581 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
582 struct mii_phy * mii_phy = NULL;
587 for(i = 0; i < 2; i++)
588 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
590 if (mii_status == 0xffff || mii_status == 0x0000) {
591 if (netif_msg_probe(sis_priv))
592 printk(KERN_DEBUG "%s: MII at address %d"
598 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
599 printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n");
600 mii_phy = sis_priv->first_mii;
604 mii_phy = mii_phy->next;
610 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
611 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
612 mii_phy->phy_addr = phy_addr;
613 mii_phy->status = mii_status;
614 mii_phy->next = sis_priv->mii;
615 sis_priv->mii = mii_phy;
616 sis_priv->first_mii = mii_phy;
618 for (i = 0; mii_chip_table[i].phy_id1; i++)
619 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
620 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
621 mii_phy->phy_types = mii_chip_table[i].phy_types;
622 if (mii_chip_table[i].phy_types == MIX)
624 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
625 printk(KERN_INFO "%s: %s transceiver found "
628 mii_chip_table[i].name,
633 if( !mii_chip_table[i].phy_id1 ) {
634 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
636 mii_phy->phy_types = UNKNOWN;
640 if (sis_priv->mii == NULL) {
641 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
645 /* select default PHY for mac */
646 sis_priv->mii = NULL;
647 sis900_default_phy( net_dev );
649 /* Reset phy if default phy is internal sis900 */
650 if ((sis_priv->mii->phy_id0 == 0x001D) &&
651 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
652 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
654 /* workaround for ICS1893 PHY */
655 if ((sis_priv->mii->phy_id0 == 0x0015) &&
656 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
657 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
659 if(status & MII_STAT_LINK){
663 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
664 if (time_after_eq(jiffies, timeout)) {
665 printk(KERN_WARNING "%s: reset phy and link down now\n",
672 if (sis_priv->chipset_rev == SIS630E_900_REV) {
673 /* SiS 630E has some bugs on default value of PHY registers */
674 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
675 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
676 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
677 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
678 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
681 if (sis_priv->mii->status & MII_STAT_LINK)
682 netif_carrier_on(net_dev);
684 netif_carrier_off(net_dev);
690 * sis900_default_phy - Select default PHY for sis900 mac.
691 * @net_dev: the net device to probe for
693 * Select first detected PHY with link as default.
694 * If no one is link on, select PHY whose types is HOME as default.
695 * If HOME doesn't exist, select LAN.
698 static u16 sis900_default_phy(struct net_device * net_dev)
700 struct sis900_private *sis_priv = netdev_priv(net_dev);
701 struct mii_phy *phy = NULL, *phy_home = NULL,
702 *default_phy = NULL, *phy_lan = NULL;
705 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
706 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
707 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
709 /* Link ON & Not select default PHY & not ghost PHY */
710 if ((status & MII_STAT_LINK) && !default_phy &&
711 (phy->phy_types != UNKNOWN))
714 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
715 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
716 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
717 if (phy->phy_types == HOME)
719 else if(phy->phy_types == LAN)
724 if (!default_phy && phy_home)
725 default_phy = phy_home;
726 else if (!default_phy && phy_lan)
727 default_phy = phy_lan;
728 else if (!default_phy)
729 default_phy = sis_priv->first_mii;
731 if (sis_priv->mii != default_phy) {
732 sis_priv->mii = default_phy;
733 sis_priv->cur_phy = default_phy->phy_addr;
734 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
735 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
738 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
740 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
741 status &= (~MII_CNTL_ISOLATE);
743 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
744 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
745 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
752 * sis900_set_capability - set the media capability of network adapter.
753 * @net_dev : the net device to probe for
756 * Set the media capability of network adapter according to
757 * mii status register. It's necessary before auto-negotiate.
760 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
765 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
766 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
768 cap = MII_NWAY_CSMA_CD |
769 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
770 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
771 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
772 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
774 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
778 /* Delay between EEPROM clock transitions. */
779 #define eeprom_delay() inl(ee_addr)
782 * read_eeprom - Read Serial EEPROM
783 * @ioaddr: base i/o address
784 * @location: the EEPROM location to read
786 * Read Serial EEPROM through EEPROM Access Register.
787 * Note that location is in word (16 bits) unit
790 static u16 __devinit read_eeprom(long ioaddr, int location)
794 long ee_addr = ioaddr + mear;
795 u32 read_cmd = location | EEread;
802 /* Shift the read command (9) bits out. */
803 for (i = 8; i >= 0; i--) {
804 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
805 outl(dataval, ee_addr);
807 outl(dataval | EECLK, ee_addr);
813 /* read the 16-bits data in */
814 for (i = 16; i > 0; i--) {
817 outl(EECS | EECLK, ee_addr);
819 retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
823 /* Terminate the EEPROM access. */
830 /* Read and write the MII management registers using software-generated
831 serial MDIO protocol. Note that the command bits and data bits are
832 send out separately */
833 #define mdio_delay() inl(mdio_addr)
835 static void mdio_idle(long mdio_addr)
837 outl(MDIO | MDDIR, mdio_addr);
839 outl(MDIO | MDDIR | MDC, mdio_addr);
842 /* Syncronize the MII management interface by shifting 32 one bits out. */
843 static void mdio_reset(long mdio_addr)
847 for (i = 31; i >= 0; i--) {
848 outl(MDDIR | MDIO, mdio_addr);
850 outl(MDDIR | MDIO | MDC, mdio_addr);
857 * mdio_read - read MII PHY register
858 * @net_dev: the net device to read
859 * @phy_id: the phy address to read
860 * @location: the phy regiester id to read
862 * Read MII registers through MDIO and MDC
863 * using MDIO management frame structure and protocol(defined by ISO/IEC).
864 * Please see SiS7014 or ICS spec
867 static int mdio_read(struct net_device *net_dev, int phy_id, int location)
869 long mdio_addr = net_dev->base_addr + mear;
870 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
874 mdio_reset(mdio_addr);
875 mdio_idle(mdio_addr);
877 for (i = 15; i >= 0; i--) {
878 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
879 outl(dataval, mdio_addr);
881 outl(dataval | MDC, mdio_addr);
885 /* Read the 16 data bits. */
886 for (i = 16; i > 0; i--) {
889 retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
890 outl(MDC, mdio_addr);
893 outl(0x00, mdio_addr);
899 * mdio_write - write MII PHY register
900 * @net_dev: the net device to write
901 * @phy_id: the phy address to write
902 * @location: the phy regiester id to write
903 * @value: the register value to write with
905 * Write MII registers with @value through MDIO and MDC
906 * using MDIO management frame structure and protocol(defined by ISO/IEC)
907 * please see SiS7014 or ICS spec
910 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
913 long mdio_addr = net_dev->base_addr + mear;
914 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
917 mdio_reset(mdio_addr);
918 mdio_idle(mdio_addr);
920 /* Shift the command bits out. */
921 for (i = 15; i >= 0; i--) {
922 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
923 outb(dataval, mdio_addr);
925 outb(dataval | MDC, mdio_addr);
930 /* Shift the value bits out. */
931 for (i = 15; i >= 0; i--) {
932 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
933 outl(dataval, mdio_addr);
935 outl(dataval | MDC, mdio_addr);
940 /* Clear out extra bits. */
941 for (i = 2; i > 0; i--) {
944 outb(MDC, mdio_addr);
947 outl(0x00, mdio_addr);
954 * sis900_reset_phy - reset sis900 mii phy.
955 * @net_dev: the net device to write
956 * @phy_addr: default phy address
958 * Some specific phy can't work properly without reset.
959 * This function will be called during initialization and
960 * link status change from ON to DOWN.
963 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
968 for (i = 0; i < 2; i++)
969 status = mdio_read(net_dev, phy_addr, MII_STATUS);
971 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
976 #ifdef CONFIG_NET_POLL_CONTROLLER
978 * Polling 'interrupt' - used by things like netconsole to send skbs
979 * without having to re-enable interrupts. It's not called while
980 * the interrupt routine is executing.
982 static void sis900_poll(struct net_device *dev)
984 disable_irq(dev->irq);
985 sis900_interrupt(dev->irq, dev);
986 enable_irq(dev->irq);
991 * sis900_open - open sis900 device
992 * @net_dev: the net device to open
994 * Do some initialization and start net interface.
995 * enable interrupts and set sis900 timer.
999 sis900_open(struct net_device *net_dev)
1001 struct sis900_private *sis_priv = netdev_priv(net_dev);
1002 long ioaddr = net_dev->base_addr;
1005 /* Soft reset the chip. */
1006 sis900_reset(net_dev);
1008 /* Equalizer workaround Rule */
1009 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1011 ret = request_irq(net_dev->irq, &sis900_interrupt, IRQF_SHARED,
1012 net_dev->name, net_dev);
1016 sis900_init_rxfilter(net_dev);
1018 sis900_init_tx_ring(net_dev);
1019 sis900_init_rx_ring(net_dev);
1021 set_rx_mode(net_dev);
1023 netif_start_queue(net_dev);
1025 /* Workaround for EDB */
1026 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1028 /* Enable all known interrupts by setting the interrupt mask. */
1029 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1030 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
1031 outl(IE, ioaddr + ier);
1033 sis900_check_mode(net_dev, sis_priv->mii);
1035 /* Set the timer to switch to check for link beat and perhaps switch
1036 to an alternate media type. */
1037 init_timer(&sis_priv->timer);
1038 sis_priv->timer.expires = jiffies + HZ;
1039 sis_priv->timer.data = (unsigned long)net_dev;
1040 sis_priv->timer.function = &sis900_timer;
1041 add_timer(&sis_priv->timer);
1047 * sis900_init_rxfilter - Initialize the Rx filter
1048 * @net_dev: the net device to initialize for
1050 * Set receive filter address to our MAC address
1051 * and enable packet filtering.
1055 sis900_init_rxfilter (struct net_device * net_dev)
1057 struct sis900_private *sis_priv = netdev_priv(net_dev);
1058 long ioaddr = net_dev->base_addr;
1062 rfcrSave = inl(rfcr + ioaddr);
1064 /* disable packet filtering before setting filter */
1065 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
1067 /* load MAC addr to filter data register */
1068 for (i = 0 ; i < 3 ; i++) {
1071 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1072 outl((i << RFADDR_shift), ioaddr + rfcr);
1073 outl(w, ioaddr + rfdr);
1075 if (netif_msg_hw(sis_priv)) {
1076 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1077 net_dev->name, i, inl(ioaddr + rfdr));
1081 /* enable packet filtering */
1082 outl(rfcrSave | RFEN, rfcr + ioaddr);
1086 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1087 * @net_dev: the net device to initialize for
1089 * Initialize the Tx descriptor ring,
1093 sis900_init_tx_ring(struct net_device *net_dev)
1095 struct sis900_private *sis_priv = netdev_priv(net_dev);
1096 long ioaddr = net_dev->base_addr;
1099 sis_priv->tx_full = 0;
1100 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1102 for (i = 0; i < NUM_TX_DESC; i++) {
1103 sis_priv->tx_skbuff[i] = NULL;
1105 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1106 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1107 sis_priv->tx_ring[i].cmdsts = 0;
1108 sis_priv->tx_ring[i].bufptr = 0;
1111 /* load Transmit Descriptor Register */
1112 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1113 if (netif_msg_hw(sis_priv))
1114 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1115 net_dev->name, inl(ioaddr + txdp));
1119 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1120 * @net_dev: the net device to initialize for
1122 * Initialize the Rx descriptor ring,
1123 * and pre-allocate recevie buffers (socket buffer)
1127 sis900_init_rx_ring(struct net_device *net_dev)
1129 struct sis900_private *sis_priv = netdev_priv(net_dev);
1130 long ioaddr = net_dev->base_addr;
1133 sis_priv->cur_rx = 0;
1134 sis_priv->dirty_rx = 0;
1136 /* init RX descriptor */
1137 for (i = 0; i < NUM_RX_DESC; i++) {
1138 sis_priv->rx_skbuff[i] = NULL;
1140 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1141 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1142 sis_priv->rx_ring[i].cmdsts = 0;
1143 sis_priv->rx_ring[i].bufptr = 0;
1146 /* allocate sock buffers */
1147 for (i = 0; i < NUM_RX_DESC; i++) {
1148 struct sk_buff *skb;
1150 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1151 /* not enough memory for skbuff, this makes a "hole"
1152 on the buffer ring, it is not clear how the
1153 hardware will react to this kind of degenerated
1157 sis_priv->rx_skbuff[i] = skb;
1158 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1159 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
1160 skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1162 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1164 /* load Receive Descriptor Register */
1165 outl(sis_priv->rx_ring_dma, ioaddr + rxdp);
1166 if (netif_msg_hw(sis_priv))
1167 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1168 net_dev->name, inl(ioaddr + rxdp));
1172 * sis630_set_eq - set phy equalizer value for 630 LAN
1173 * @net_dev: the net device to set equalizer value
1174 * @revision: 630 LAN revision number
1176 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1177 * PHY register 14h(Test)
1178 * Bit 14: 0 -- Automatically dectect (default)
1179 * 1 -- Manually set Equalizer filter
1180 * Bit 13: 0 -- (Default)
1181 * 1 -- Speed up convergence of equalizer setting
1182 * Bit 9 : 0 -- (Default)
1183 * 1 -- Disable Baseline Wander
1184 * Bit 3~7 -- Equalizer filter setting
1185 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1186 * Then calculate equalizer value
1187 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1188 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1189 * Calculate Equalizer value:
1190 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-dectect proper equalizer value.
1191 * When the equalizer is stable, this value is not a fixed value. It will be within
1192 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1193 * 0 <= max <= 4 --> set equalizer to max
1194 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1195 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1198 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1200 struct sis900_private *sis_priv = netdev_priv(net_dev);
1201 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1204 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1205 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1208 if (netif_carrier_ok(net_dev)) {
1209 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1210 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1211 (0x2200 | reg14h) & 0xBFFF);
1212 for (i=0; i < maxcount; i++) {
1213 eq_value = (0x00F8 & mdio_read(net_dev,
1214 sis_priv->cur_phy, MII_RESV)) >> 3;
1216 max_value=min_value=eq_value;
1217 max_value = (eq_value > max_value) ?
1218 eq_value : max_value;
1219 min_value = (eq_value < min_value) ?
1220 eq_value : min_value;
1222 /* 630E rule to determine the equalizer value */
1223 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1224 revision == SIS630ET_900_REV) {
1226 eq_value = max_value;
1227 else if (max_value >= 5 && max_value < 15)
1228 eq_value = (max_value == min_value) ?
1229 max_value+2 : max_value+1;
1230 else if (max_value >= 15)
1231 eq_value=(max_value == min_value) ?
1232 max_value+6 : max_value+5;
1234 /* 630B0&B1 rule to determine the equalizer value */
1235 if (revision == SIS630A_900_REV &&
1236 (sis_priv->host_bridge_rev == SIS630B0 ||
1237 sis_priv->host_bridge_rev == SIS630B1)) {
1241 eq_value = (max_value + min_value + 1)/2;
1243 /* write equalizer value and setting */
1244 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1245 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1246 reg14h = (reg14h | 0x6000) & 0xFDFF;
1247 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1249 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1250 if (revision == SIS630A_900_REV &&
1251 (sis_priv->host_bridge_rev == SIS630B0 ||
1252 sis_priv->host_bridge_rev == SIS630B1))
1253 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1254 (reg14h | 0x2200) & 0xBFFF);
1256 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1257 (reg14h | 0x2000) & 0xBFFF);
1263 * sis900_timer - sis900 timer routine
1264 * @data: pointer to sis900 net device
1266 * On each timer ticks we check two things,
1267 * link status (ON/OFF) and link mode (10/100/Full/Half)
1270 static void sis900_timer(unsigned long data)
1272 struct net_device *net_dev = (struct net_device *)data;
1273 struct sis900_private *sis_priv = netdev_priv(net_dev);
1274 struct mii_phy *mii_phy = sis_priv->mii;
1275 static const int next_tick = 5*HZ;
1278 if (!sis_priv->autong_complete){
1279 int speed, duplex = 0;
1281 sis900_read_mode(net_dev, &speed, &duplex);
1283 sis900_set_mode(net_dev->base_addr, speed, duplex);
1284 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1285 netif_start_queue(net_dev);
1288 sis_priv->timer.expires = jiffies + HZ;
1289 add_timer(&sis_priv->timer);
1293 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1294 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1296 /* Link OFF -> ON */
1297 if (!netif_carrier_ok(net_dev)) {
1299 /* Search for new PHY */
1300 status = sis900_default_phy(net_dev);
1301 mii_phy = sis_priv->mii;
1303 if (status & MII_STAT_LINK){
1304 sis900_check_mode(net_dev, mii_phy);
1305 netif_carrier_on(net_dev);
1308 /* Link ON -> OFF */
1309 if (!(status & MII_STAT_LINK)){
1310 netif_carrier_off(net_dev);
1311 if(netif_msg_link(sis_priv))
1312 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1314 /* Change mode issue */
1315 if ((mii_phy->phy_id0 == 0x001D) &&
1316 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1317 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1319 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1325 sis_priv->timer.expires = jiffies + next_tick;
1326 add_timer(&sis_priv->timer);
1330 * sis900_check_mode - check the media mode for sis900
1331 * @net_dev: the net device to be checked
1332 * @mii_phy: the mii phy
1334 * Older driver gets the media mode from mii status output
1335 * register. Now we set our media capability and auto-negotiate
1336 * to get the upper bound of speed and duplex between two ends.
1337 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1338 * and autong_complete should be set to 1.
1341 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1343 struct sis900_private *sis_priv = netdev_priv(net_dev);
1344 long ioaddr = net_dev->base_addr;
1347 if (mii_phy->phy_types == LAN) {
1348 outl(~EXD & inl(ioaddr + cfg), ioaddr + cfg);
1349 sis900_set_capability(net_dev , mii_phy);
1350 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1352 outl(EXD | inl(ioaddr + cfg), ioaddr + cfg);
1353 speed = HW_SPEED_HOME;
1354 duplex = FDX_CAPABLE_HALF_SELECTED;
1355 sis900_set_mode(ioaddr, speed, duplex);
1356 sis_priv->autong_complete = 1;
1361 * sis900_set_mode - Set the media mode of mac register.
1362 * @ioaddr: the address of the device
1363 * @speed : the transmit speed to be determined
1364 * @duplex: the duplex mode to be determined
1366 * Set the media mode of mac register txcfg/rxcfg according to
1367 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1368 * bus is used instead of PCI bus. When this bit is set 1, the
1369 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1373 static void sis900_set_mode (long ioaddr, int speed, int duplex)
1375 u32 tx_flags = 0, rx_flags = 0;
1377 if (inl(ioaddr + cfg) & EDB_MASTER_EN) {
1378 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1379 (TX_FILL_THRESH << TxFILLT_shift);
1380 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1382 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1383 (TX_FILL_THRESH << TxFILLT_shift);
1384 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1387 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1388 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1389 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1391 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1392 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1395 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1396 tx_flags |= (TxCSI | TxHBI);
1400 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1401 /* Can accept Jumbo packet */
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 = netdev_priv(net_dev);
1426 for (i = 0; i < 2; i++)
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 = netdev_priv(net_dev);
1458 struct mii_phy *phy = sis_priv->mii;
1459 int phy_addr = sis_priv->cur_phy;
1461 u16 autoadv, autorec;
1464 for (i = 0; i < 2; i++)
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 = netdev_priv(net_dev);
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 net_dev->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 = netdev_priv(net_dev);
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)
1640 struct net_device *net_dev = dev_instance;
1641 struct sis900_private *sis_priv = netdev_priv(net_dev);
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 = netdev_priv(net_dev);
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;
1717 unsigned int data_size;
1719 if (--rx_work_limit < 0)
1722 data_size = rx_status & DSIZE;
1723 rx_size = data_size - CRC_SIZE;
1725 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1726 /* ``TOOLONG'' flag means jumbo packet recived. */
1727 if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
1728 rx_status &= (~ ((unsigned int)TOOLONG));
1731 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1732 /* corrupted packet received */
1733 if (netif_msg_rx_err(sis_priv))
1734 printk(KERN_DEBUG "%s: Corrupted packet "
1735 "received, buffer status = 0x%8.8x/%d.\n",
1736 net_dev->name, rx_status, data_size);
1737 net_dev->stats.rx_errors++;
1738 if (rx_status & OVERRUN)
1739 net_dev->stats.rx_over_errors++;
1740 if (rx_status & (TOOLONG|RUNT))
1741 net_dev->stats.rx_length_errors++;
1742 if (rx_status & (RXISERR | FAERR))
1743 net_dev->stats.rx_frame_errors++;
1744 if (rx_status & CRCERR)
1745 net_dev->stats.rx_crc_errors++;
1746 /* reset buffer descriptor state */
1747 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1749 struct sk_buff * skb;
1750 struct sk_buff * rx_skb;
1752 pci_unmap_single(sis_priv->pci_dev,
1753 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1754 PCI_DMA_FROMDEVICE);
1756 /* refill the Rx buffer, what if there is not enought
1757 * memory for new socket buffer ?? */
1758 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1760 * Not enough memory to refill the buffer
1761 * so we need to recycle the old one so
1762 * as to avoid creating a memory hole
1765 skb = sis_priv->rx_skbuff[entry];
1766 net_dev->stats.rx_dropped++;
1767 goto refill_rx_ring;
1770 /* This situation should never happen, but due to
1771 some unknow bugs, it is possible that
1772 we are working on NULL sk_buff :-( */
1773 if (sis_priv->rx_skbuff[entry] == NULL) {
1774 if (netif_msg_rx_err(sis_priv))
1775 printk(KERN_WARNING "%s: NULL pointer "
1776 "encountered in Rx ring\n"
1777 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1778 net_dev->name, sis_priv->cur_rx,
1779 sis_priv->dirty_rx);
1783 /* give the socket buffer to upper layers */
1784 rx_skb = sis_priv->rx_skbuff[entry];
1785 skb_put(rx_skb, rx_size);
1786 rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
1789 /* some network statistics */
1790 if ((rx_status & BCAST) == MCAST)
1791 net_dev->stats.multicast++;
1792 net_dev->stats.rx_bytes += rx_size;
1793 net_dev->stats.rx_packets++;
1794 sis_priv->dirty_rx++;
1796 sis_priv->rx_skbuff[entry] = skb;
1797 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1798 sis_priv->rx_ring[entry].bufptr =
1799 pci_map_single(sis_priv->pci_dev, skb->data,
1800 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1803 entry = sis_priv->cur_rx % NUM_RX_DESC;
1804 rx_status = sis_priv->rx_ring[entry].cmdsts;
1807 /* refill the Rx buffer, what if the rate of refilling is slower
1808 * than consuming ?? */
1809 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
1810 struct sk_buff *skb;
1812 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1814 if (sis_priv->rx_skbuff[entry] == NULL) {
1815 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1816 /* not enough memory for skbuff, this makes a
1817 * "hole" on the buffer ring, it is not clear
1818 * how the hardware will react to this kind
1819 * of degenerated buffer */
1820 if (netif_msg_rx_err(sis_priv))
1821 printk(KERN_INFO "%s: Memory squeeze, "
1822 "deferring packet.\n",
1824 net_dev->stats.rx_dropped++;
1827 sis_priv->rx_skbuff[entry] = skb;
1828 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1829 sis_priv->rx_ring[entry].bufptr =
1830 pci_map_single(sis_priv->pci_dev, skb->data,
1831 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1834 /* re-enable the potentially idle receive state matchine */
1835 outl(RxENA | inl(ioaddr + cr), ioaddr + cr );
1841 * sis900_finish_xmit - finish up transmission of packets
1842 * @net_dev: the net device to be transmitted on
1844 * Check for error condition and free socket buffer etc
1845 * schedule for more transmission as needed
1846 * Note: This function is called by interrupt handler,
1847 * don't do "too much" work here
1850 static void sis900_finish_xmit (struct net_device *net_dev)
1852 struct sis900_private *sis_priv = netdev_priv(net_dev);
1854 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1855 struct sk_buff *skb;
1859 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1860 tx_status = sis_priv->tx_ring[entry].cmdsts;
1862 if (tx_status & OWN) {
1863 /* The packet is not transmitted yet (owned by hardware) !
1864 * Note: the interrupt is generated only when Tx Machine
1865 * is idle, so this is an almost impossible case */
1869 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1870 /* packet unsuccessfully transmitted */
1871 if (netif_msg_tx_err(sis_priv))
1872 printk(KERN_DEBUG "%s: Transmit "
1873 "error, Tx status %8.8x.\n",
1874 net_dev->name, tx_status);
1875 net_dev->stats.tx_errors++;
1876 if (tx_status & UNDERRUN)
1877 net_dev->stats.tx_fifo_errors++;
1878 if (tx_status & ABORT)
1879 net_dev->stats.tx_aborted_errors++;
1880 if (tx_status & NOCARRIER)
1881 net_dev->stats.tx_carrier_errors++;
1882 if (tx_status & OWCOLL)
1883 net_dev->stats.tx_window_errors++;
1885 /* packet successfully transmitted */
1886 net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
1887 net_dev->stats.tx_bytes += tx_status & DSIZE;
1888 net_dev->stats.tx_packets++;
1890 /* Free the original skb. */
1891 skb = sis_priv->tx_skbuff[entry];
1892 pci_unmap_single(sis_priv->pci_dev,
1893 sis_priv->tx_ring[entry].bufptr, skb->len,
1895 dev_kfree_skb_irq(skb);
1896 sis_priv->tx_skbuff[entry] = NULL;
1897 sis_priv->tx_ring[entry].bufptr = 0;
1898 sis_priv->tx_ring[entry].cmdsts = 0;
1901 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1902 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1903 /* The ring is no longer full, clear tx_full and schedule
1904 * more transmission by netif_wake_queue(net_dev) */
1905 sis_priv->tx_full = 0;
1906 netif_wake_queue (net_dev);
1911 * sis900_close - close sis900 device
1912 * @net_dev: the net device to be closed
1914 * Disable interrupts, stop the Tx and Rx Status Machine
1915 * free Tx and RX socket buffer
1918 static int sis900_close(struct net_device *net_dev)
1920 long ioaddr = net_dev->base_addr;
1921 struct sis900_private *sis_priv = netdev_priv(net_dev);
1922 struct sk_buff *skb;
1925 netif_stop_queue(net_dev);
1927 /* Disable interrupts by clearing the interrupt mask. */
1928 outl(0x0000, ioaddr + imr);
1929 outl(0x0000, ioaddr + ier);
1931 /* Stop the chip's Tx and Rx Status Machine */
1932 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
1934 del_timer(&sis_priv->timer);
1936 free_irq(net_dev->irq, net_dev);
1938 /* Free Tx and RX skbuff */
1939 for (i = 0; i < NUM_RX_DESC; i++) {
1940 skb = sis_priv->rx_skbuff[i];
1942 pci_unmap_single(sis_priv->pci_dev,
1943 sis_priv->rx_ring[i].bufptr,
1944 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1946 sis_priv->rx_skbuff[i] = NULL;
1949 for (i = 0; i < NUM_TX_DESC; i++) {
1950 skb = sis_priv->tx_skbuff[i];
1952 pci_unmap_single(sis_priv->pci_dev,
1953 sis_priv->tx_ring[i].bufptr, skb->len,
1956 sis_priv->tx_skbuff[i] = NULL;
1960 /* Green! Put the chip in low-power mode. */
1966 * sis900_get_drvinfo - Return information about driver
1967 * @net_dev: the net device to probe
1968 * @info: container for info returned
1970 * Process ethtool command such as "ehtool -i" to show information
1973 static void sis900_get_drvinfo(struct net_device *net_dev,
1974 struct ethtool_drvinfo *info)
1976 struct sis900_private *sis_priv = netdev_priv(net_dev);
1978 strcpy (info->driver, SIS900_MODULE_NAME);
1979 strcpy (info->version, SIS900_DRV_VERSION);
1980 strcpy (info->bus_info, pci_name(sis_priv->pci_dev));
1983 static u32 sis900_get_msglevel(struct net_device *net_dev)
1985 struct sis900_private *sis_priv = netdev_priv(net_dev);
1986 return sis_priv->msg_enable;
1989 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
1991 struct sis900_private *sis_priv = netdev_priv(net_dev);
1992 sis_priv->msg_enable = value;
1995 static u32 sis900_get_link(struct net_device *net_dev)
1997 struct sis900_private *sis_priv = netdev_priv(net_dev);
1998 return mii_link_ok(&sis_priv->mii_info);
2001 static int sis900_get_settings(struct net_device *net_dev,
2002 struct ethtool_cmd *cmd)
2004 struct sis900_private *sis_priv = netdev_priv(net_dev);
2005 spin_lock_irq(&sis_priv->lock);
2006 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2007 spin_unlock_irq(&sis_priv->lock);
2011 static int sis900_set_settings(struct net_device *net_dev,
2012 struct ethtool_cmd *cmd)
2014 struct sis900_private *sis_priv = netdev_priv(net_dev);
2016 spin_lock_irq(&sis_priv->lock);
2017 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2018 spin_unlock_irq(&sis_priv->lock);
2022 static int sis900_nway_reset(struct net_device *net_dev)
2024 struct sis900_private *sis_priv = netdev_priv(net_dev);
2025 return mii_nway_restart(&sis_priv->mii_info);
2029 * sis900_set_wol - Set up Wake on Lan registers
2030 * @net_dev: the net device to probe
2031 * @wol: container for info passed to the driver
2033 * Process ethtool command "wol" to setup wake on lan features.
2034 * SiS900 supports sending WoL events if a correct packet is received,
2035 * but there is no simple way to filter them to only a subset (broadcast,
2036 * multicast, unicast or arp).
2039 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2041 struct sis900_private *sis_priv = netdev_priv(net_dev);
2042 long pmctrl_addr = net_dev->base_addr + pmctrl;
2043 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2045 if (wol->wolopts == 0) {
2046 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2047 cfgpmcsr &= ~PME_EN;
2048 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2049 outl(pmctrl_bits, pmctrl_addr);
2050 if (netif_msg_wol(sis_priv))
2051 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2055 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2056 | WAKE_BCAST | WAKE_ARP))
2059 if (wol->wolopts & WAKE_MAGIC)
2060 pmctrl_bits |= MAGICPKT;
2061 if (wol->wolopts & WAKE_PHY)
2062 pmctrl_bits |= LINKON;
2064 outl(pmctrl_bits, pmctrl_addr);
2066 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2068 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2069 if (netif_msg_wol(sis_priv))
2070 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2075 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2077 long pmctrl_addr = net_dev->base_addr + pmctrl;
2080 pmctrl_bits = inl(pmctrl_addr);
2081 if (pmctrl_bits & MAGICPKT)
2082 wol->wolopts |= WAKE_MAGIC;
2083 if (pmctrl_bits & LINKON)
2084 wol->wolopts |= WAKE_PHY;
2086 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2089 static const struct ethtool_ops sis900_ethtool_ops = {
2090 .get_drvinfo = sis900_get_drvinfo,
2091 .get_msglevel = sis900_get_msglevel,
2092 .set_msglevel = sis900_set_msglevel,
2093 .get_link = sis900_get_link,
2094 .get_settings = sis900_get_settings,
2095 .set_settings = sis900_set_settings,
2096 .nway_reset = sis900_nway_reset,
2097 .get_wol = sis900_get_wol,
2098 .set_wol = sis900_set_wol
2102 * mii_ioctl - process MII i/o control command
2103 * @net_dev: the net device to command for
2104 * @rq: parameter for command
2105 * @cmd: the i/o command
2107 * Process MII command like read/write MII register
2110 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2112 struct sis900_private *sis_priv = netdev_priv(net_dev);
2113 struct mii_ioctl_data *data = if_mii(rq);
2116 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2117 data->phy_id = sis_priv->mii->phy_addr;
2120 case SIOCGMIIREG: /* Read MII PHY register. */
2121 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2124 case SIOCSMIIREG: /* Write MII PHY register. */
2125 if (!capable(CAP_NET_ADMIN))
2127 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2135 * sis900_set_config - Set media type by net_device.set_config
2136 * @dev: the net device for media type change
2137 * @map: ifmap passed by ifconfig
2139 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2140 * we support only port changes. All other runtime configuration
2141 * changes will be ignored
2144 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2146 struct sis900_private *sis_priv = netdev_priv(dev);
2147 struct mii_phy *mii_phy = sis_priv->mii;
2151 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2152 /* we switch on the ifmap->port field. I couldn't find anything
2153 * like a definition or standard for the values of that field.
2154 * I think the meaning of those values is device specific. But
2155 * since I would like to change the media type via the ifconfig
2156 * command I use the definition from linux/netdevice.h
2157 * (which seems to be different from the ifport(pcmcia) definition) */
2159 case IF_PORT_UNKNOWN: /* use auto here */
2160 dev->if_port = map->port;
2161 /* we are going to change the media type, so the Link
2162 * will be temporary down and we need to reflect that
2163 * here. When the Link comes up again, it will be
2164 * sensed by the sis_timer procedure, which also does
2165 * all the rest for us */
2166 netif_carrier_off(dev);
2168 /* read current state */
2169 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2171 /* enable auto negotiation and reset the negotioation
2172 * (I don't really know what the auto negatiotiation
2173 * reset really means, but it sounds for me right to
2175 mdio_write(dev, mii_phy->phy_addr,
2176 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2180 case IF_PORT_10BASET: /* 10BaseT */
2181 dev->if_port = map->port;
2183 /* we are going to change the media type, so the Link
2184 * will be temporary down and we need to reflect that
2185 * here. When the Link comes up again, it will be
2186 * sensed by the sis_timer procedure, which also does
2187 * all the rest for us */
2188 netif_carrier_off(dev);
2190 /* set Speed to 10Mbps */
2191 /* read current state */
2192 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2194 /* disable auto negotiation and force 10MBit mode*/
2195 mdio_write(dev, mii_phy->phy_addr,
2196 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2200 case IF_PORT_100BASET: /* 100BaseT */
2201 case IF_PORT_100BASETX: /* 100BaseTx */
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 100Mbps */
2212 /* disable auto negotiation and enable 100MBit Mode */
2213 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2214 mdio_write(dev, mii_phy->phy_addr,
2215 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2220 case IF_PORT_10BASE2: /* 10Base2 */
2221 case IF_PORT_AUI: /* AUI */
2222 case IF_PORT_100BASEFX: /* 100BaseFx */
2223 /* These Modes are not supported (are they?)*/
2235 * sis900_mcast_bitnr - compute hashtable index
2236 * @addr: multicast address
2237 * @revision: revision id of chip
2239 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2240 * hash table, which makes this function a little bit different from other drivers
2241 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2242 * multicast hash table.
2245 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2248 u32 crc = ether_crc(6, addr);
2250 /* leave 8 or 7 most siginifant bits */
2251 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2252 return ((int)(crc >> 24));
2254 return ((int)(crc >> 25));
2258 * set_rx_mode - Set SiS900 receive mode
2259 * @net_dev: the net device to be set
2261 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2262 * And set the appropriate multicast filter.
2263 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2266 static void set_rx_mode(struct net_device *net_dev)
2268 long ioaddr = net_dev->base_addr;
2269 struct sis900_private *sis_priv = netdev_priv(net_dev);
2270 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2271 int i, table_entries;
2274 /* 635 Hash Table entries = 256(2^16) */
2275 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2276 (sis_priv->chipset_rev == SIS900B_900_REV))
2281 if (net_dev->flags & IFF_PROMISC) {
2282 /* Accept any kinds of packets */
2283 rx_mode = RFPromiscuous;
2284 for (i = 0; i < table_entries; i++)
2285 mc_filter[i] = 0xffff;
2286 } else if ((net_dev->mc_count > multicast_filter_limit) ||
2287 (net_dev->flags & IFF_ALLMULTI)) {
2288 /* too many multicast addresses or accept all multicast packet */
2289 rx_mode = RFAAB | RFAAM;
2290 for (i = 0; i < table_entries; i++)
2291 mc_filter[i] = 0xffff;
2293 /* Accept Broadcast packet, destination address matchs our
2294 * MAC address, use Receive Filter to reject unwanted MCAST
2296 struct dev_mc_list *mclist;
2298 for (i = 0, mclist = net_dev->mc_list;
2299 mclist && i < net_dev->mc_count;
2300 i++, mclist = mclist->next) {
2301 unsigned int bit_nr =
2302 sis900_mcast_bitnr(mclist->dmi_addr, sis_priv->chipset_rev);
2303 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2307 /* update Multicast Hash Table in Receive Filter */
2308 for (i = 0; i < table_entries; i++) {
2309 /* why plus 0x04 ??, That makes the correct value for hash table. */
2310 outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr);
2311 outl(mc_filter[i], ioaddr + rfdr);
2314 outl(RFEN | rx_mode, ioaddr + rfcr);
2316 /* sis900 is capable of looping back packets at MAC level for
2317 * debugging purpose */
2318 if (net_dev->flags & IFF_LOOPBACK) {
2320 /* We must disable Tx/Rx before setting loopback mode */
2321 cr_saved = inl(ioaddr + cr);
2322 outl(cr_saved | TxDIS | RxDIS, ioaddr + cr);
2323 /* enable loopback */
2324 outl(inl(ioaddr + txcfg) | TxMLB, ioaddr + txcfg);
2325 outl(inl(ioaddr + rxcfg) | RxATX, ioaddr + rxcfg);
2327 outl(cr_saved, ioaddr + cr);
2334 * sis900_reset - Reset sis900 MAC
2335 * @net_dev: the net device to reset
2337 * reset sis900 MAC and wait until finished
2338 * reset through command register
2339 * change backoff algorithm for 900B0 & 635 M/B
2342 static void sis900_reset(struct net_device *net_dev)
2344 struct sis900_private *sis_priv = netdev_priv(net_dev);
2345 long ioaddr = net_dev->base_addr;
2347 u32 status = TxRCMP | RxRCMP;
2349 outl(0, ioaddr + ier);
2350 outl(0, ioaddr + imr);
2351 outl(0, ioaddr + rfcr);
2353 outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr);
2355 /* Check that the chip has finished the reset. */
2356 while (status && (i++ < 1000)) {
2357 status ^= (inl(isr + ioaddr) & status);
2360 if( (sis_priv->chipset_rev >= SIS635A_900_REV) ||
2361 (sis_priv->chipset_rev == SIS900B_900_REV) )
2362 outl(PESEL | RND_CNT, ioaddr + cfg);
2364 outl(PESEL, ioaddr + cfg);
2368 * sis900_remove - Remove sis900 device
2369 * @pci_dev: the pci device to be removed
2371 * remove and release SiS900 net device
2374 static void __devexit sis900_remove(struct pci_dev *pci_dev)
2376 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2377 struct sis900_private *sis_priv = netdev_priv(net_dev);
2378 struct mii_phy *phy = NULL;
2380 while (sis_priv->first_mii) {
2381 phy = sis_priv->first_mii;
2382 sis_priv->first_mii = phy->next;
2386 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2387 sis_priv->rx_ring_dma);
2388 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2389 sis_priv->tx_ring_dma);
2390 unregister_netdev(net_dev);
2391 free_netdev(net_dev);
2392 pci_release_regions(pci_dev);
2393 pci_set_drvdata(pci_dev, NULL);
2398 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2400 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2401 long ioaddr = net_dev->base_addr;
2403 if(!netif_running(net_dev))
2406 netif_stop_queue(net_dev);
2407 netif_device_detach(net_dev);
2409 /* Stop the chip's Tx and Rx Status Machine */
2410 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
2412 pci_set_power_state(pci_dev, PCI_D3hot);
2413 pci_save_state(pci_dev);
2418 static int sis900_resume(struct pci_dev *pci_dev)
2420 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2421 struct sis900_private *sis_priv = netdev_priv(net_dev);
2422 long ioaddr = net_dev->base_addr;
2424 if(!netif_running(net_dev))
2426 pci_restore_state(pci_dev);
2427 pci_set_power_state(pci_dev, PCI_D0);
2429 sis900_init_rxfilter(net_dev);
2431 sis900_init_tx_ring(net_dev);
2432 sis900_init_rx_ring(net_dev);
2434 set_rx_mode(net_dev);
2436 netif_device_attach(net_dev);
2437 netif_start_queue(net_dev);
2439 /* Workaround for EDB */
2440 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2442 /* Enable all known interrupts by setting the interrupt mask. */
2443 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
2444 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
2445 outl(IE, ioaddr + ier);
2447 sis900_check_mode(net_dev, sis_priv->mii);
2451 #endif /* CONFIG_PM */
2453 static struct pci_driver sis900_pci_driver = {
2454 .name = SIS900_MODULE_NAME,
2455 .id_table = sis900_pci_tbl,
2456 .probe = sis900_probe,
2457 .remove = __devexit_p(sis900_remove),
2459 .suspend = sis900_suspend,
2460 .resume = sis900_resume,
2461 #endif /* CONFIG_PM */
2464 static int __init sis900_init_module(void)
2466 /* when a module, this is printed whether or not devices are found in probe */
2471 return pci_register_driver(&sis900_pci_driver);
2474 static void __exit sis900_cleanup_module(void)
2476 pci_unregister_driver(&sis900_pci_driver);
2479 module_init(sis900_init_module);
2480 module_exit(sis900_cleanup_module);