1 /* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
2 Copyright 1999 Silicon Integrated System Corporation
3 Revision: 1.08.10 Apr. 2 2006
5 Modified from the driver which is originally written by Donald Becker.
7 This software may be used and distributed according to the terms
8 of the GNU General Public License (GPL), incorporated herein by reference.
9 Drivers based on this skeleton fall under the GPL and must retain
10 the authorship (implicit copyright) notice.
13 SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
14 preliminary Rev. 1.0 Jan. 14, 1998
15 SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
16 preliminary Rev. 1.0 Nov. 10, 1998
17 SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
18 preliminary Rev. 1.0 Jan. 18, 1998
20 Rev 1.08.10 Apr. 2 2006 Daniele Venzano add vlan (jumbo packets) support
21 Rev 1.08.09 Sep. 19 2005 Daniele Venzano add Wake on LAN support
22 Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages
23 Rev 1.08.07 Nov. 2 2003 Daniele Venzano <venza@brownhat.org> add suspend/resume support
24 Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support
25 Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary
26 Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support
27 Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function
28 Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem
29 Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY
30 Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix
31 Rev 1.07.11 Apr. 2 2001 Hui-Fen Hsu updates PCI drivers to use the new pci_set_dma_mask for kernel 2.4.3
32 Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support
33 Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup
34 Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support
35 Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix
36 Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning
37 Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig
38 Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support
39 Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E eqaulizer workaround rule
40 Rev 1.07.01 Aug. 08 2000 Ollie Lho minor update for SiS 630E and SiS 630E A1
41 Rev 1.07 Mar. 07 2000 Ollie Lho bug fix in Rx buffer ring
42 Rev 1.06.04 Feb. 11 2000 Jeff Garzik <jgarzik@pobox.com> softnet and init for kernel 2.4
43 Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release
44 Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed
45 Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com)
46 Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release
47 Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx
48 Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support
49 Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release
52 #include <linux/module.h>
53 #include <linux/moduleparam.h>
54 #include <linux/kernel.h>
55 #include <linux/string.h>
56 #include <linux/timer.h>
57 #include <linux/errno.h>
58 #include <linux/ioport.h>
59 #include <linux/slab.h>
60 #include <linux/interrupt.h>
61 #include <linux/pci.h>
62 #include <linux/netdevice.h>
63 #include <linux/init.h>
64 #include <linux/mii.h>
65 #include <linux/etherdevice.h>
66 #include <linux/skbuff.h>
67 #include <linux/delay.h>
68 #include <linux/ethtool.h>
69 #include <linux/crc32.h>
70 #include <linux/bitops.h>
71 #include <linux/dma-mapping.h>
73 #include <asm/processor.h> /* Processor type for cache alignment. */
76 #include <asm/uaccess.h> /* User space memory access functions */
80 #define SIS900_MODULE_NAME "sis900"
81 #define SIS900_DRV_VERSION "v1.08.10 Apr. 2 2006"
83 static char version[] __devinitdata =
84 KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
86 static int max_interrupt_work = 40;
87 static int multicast_filter_limit = 128;
89 static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
91 #define SIS900_DEF_MSG \
97 /* Time in jiffies before concluding the transmitter is hung. */
98 #define TX_TIMEOUT (4*HZ)
104 static const char * card_names[] = {
105 "SiS 900 PCI Fast Ethernet",
106 "SiS 7016 PCI Fast Ethernet"
108 static struct pci_device_id sis900_pci_tbl [] = {
109 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900,
110 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900},
111 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016,
112 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016},
115 MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
117 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
119 static const struct mii_chip_info {
128 } mii_chip_table[] = {
129 { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
130 { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
131 { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
132 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
133 { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
134 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
135 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
136 { "ICS LAN PHY", 0x0015, 0xF440, LAN },
137 { "ICS LAN PHY", 0x0143, 0xBC70, LAN },
138 { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
139 { "NS 83847 PHY", 0x2000, 0x5C30, MIX },
140 { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
141 { "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
146 struct mii_phy * next;
154 typedef struct _BufferDesc {
160 struct sis900_private {
161 struct net_device_stats stats;
162 struct pci_dev * pci_dev;
166 struct mii_phy * mii;
167 struct mii_phy * first_mii; /* record the first mii structure */
168 unsigned int cur_phy;
169 struct mii_if_info mii_info;
171 struct timer_list timer; /* Link status detection timer. */
172 u8 autong_complete; /* 1: auto-negotiate complete */
176 unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
177 unsigned int cur_tx, dirty_tx;
179 /* The saved address of a sent/receive-in-place packet buffer */
180 struct sk_buff *tx_skbuff[NUM_TX_DESC];
181 struct sk_buff *rx_skbuff[NUM_RX_DESC];
185 dma_addr_t tx_ring_dma;
186 dma_addr_t rx_ring_dma;
188 unsigned int tx_full; /* The Tx queue is full. */
193 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
194 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
195 MODULE_LICENSE("GPL");
197 module_param(multicast_filter_limit, int, 0444);
198 module_param(max_interrupt_work, int, 0444);
199 module_param(sis900_debug, int, 0444);
200 MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
201 MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
202 MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
204 #ifdef CONFIG_NET_POLL_CONTROLLER
205 static void sis900_poll(struct net_device *dev);
207 static int sis900_open(struct net_device *net_dev);
208 static int sis900_mii_probe (struct net_device * net_dev);
209 static void sis900_init_rxfilter (struct net_device * net_dev);
210 static u16 read_eeprom(long ioaddr, int location);
211 static int mdio_read(struct net_device *net_dev, int phy_id, int location);
212 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
213 static void sis900_timer(unsigned long data);
214 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
215 static void sis900_tx_timeout(struct net_device *net_dev);
216 static void sis900_init_tx_ring(struct net_device *net_dev);
217 static void sis900_init_rx_ring(struct net_device *net_dev);
218 static int sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
219 static int sis900_rx(struct net_device *net_dev);
220 static void sis900_finish_xmit (struct net_device *net_dev);
221 static irqreturn_t sis900_interrupt(int irq, void *dev_instance);
222 static int sis900_close(struct net_device *net_dev);
223 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
224 static struct net_device_stats *sis900_get_stats(struct net_device *net_dev);
225 static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
226 static void set_rx_mode(struct net_device *net_dev);
227 static void sis900_reset(struct net_device *net_dev);
228 static void sis630_set_eq(struct net_device *net_dev, u8 revision);
229 static int sis900_set_config(struct net_device *dev, struct ifmap *map);
230 static u16 sis900_default_phy(struct net_device * net_dev);
231 static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
232 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
233 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
234 static void sis900_set_mode (long ioaddr, int speed, int duplex);
235 static const struct ethtool_ops sis900_ethtool_ops;
238 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
239 * @pci_dev: the sis900 pci device
240 * @net_dev: the net device to get address for
242 * Older SiS900 and friends, use EEPROM to store MAC address.
243 * MAC address is read from read_eeprom() into @net_dev->dev_addr.
246 static int __devinit sis900_get_mac_addr(struct pci_dev * pci_dev, struct net_device *net_dev)
248 long ioaddr = pci_resource_start(pci_dev, 0);
252 /* check to see if we have sane EEPROM */
253 signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
254 if (signature == 0xffff || signature == 0x0000) {
255 printk (KERN_WARNING "%s: Error EERPOM read %x\n",
256 pci_name(pci_dev), signature);
260 /* get MAC address from EEPROM */
261 for (i = 0; i < 3; i++)
262 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
268 * sis630e_get_mac_addr - Get MAC address for SiS630E model
269 * @pci_dev: the sis900 pci device
270 * @net_dev: the net device to get address for
272 * SiS630E model, use APC CMOS RAM to store MAC address.
273 * APC CMOS RAM is accessed through ISA bridge.
274 * MAC address is read into @net_dev->dev_addr.
277 static int __devinit sis630e_get_mac_addr(struct pci_dev * pci_dev,
278 struct net_device *net_dev)
280 struct pci_dev *isa_bridge = NULL;
284 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
286 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
288 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
292 pci_read_config_byte(isa_bridge, 0x48, ®);
293 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
295 for (i = 0; i < 6; i++) {
296 outb(0x09 + i, 0x70);
297 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
299 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
300 pci_dev_put(isa_bridge);
307 * sis635_get_mac_addr - Get MAC address for SIS635 model
308 * @pci_dev: the sis900 pci device
309 * @net_dev: the net device to get address for
311 * SiS635 model, set MAC Reload Bit to load Mac address from APC
312 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
313 * @net_dev->dev_addr.
316 static int __devinit sis635_get_mac_addr(struct pci_dev * pci_dev,
317 struct net_device *net_dev)
319 long ioaddr = net_dev->base_addr;
323 rfcrSave = inl(rfcr + ioaddr);
325 outl(rfcrSave | RELOAD, ioaddr + cr);
326 outl(0, ioaddr + cr);
328 /* disable packet filtering before setting filter */
329 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
331 /* load MAC addr to filter data register */
332 for (i = 0 ; i < 3 ; i++) {
333 outl((i << RFADDR_shift), ioaddr + rfcr);
334 *( ((u16 *)net_dev->dev_addr) + i) = inw(ioaddr + rfdr);
337 /* enable packet filtering */
338 outl(rfcrSave | RFEN, rfcr + ioaddr);
344 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
345 * @pci_dev: the sis900 pci device
346 * @net_dev: the net device to get address for
348 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
350 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
351 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
352 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
353 * EEDONE signal to refuse EEPROM access by LAN.
354 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
355 * The signature field in SiS962 or SiS963 spec is meaningless.
356 * MAC address is read into @net_dev->dev_addr.
359 static int __devinit sis96x_get_mac_addr(struct pci_dev * pci_dev,
360 struct net_device *net_dev)
362 long ioaddr = net_dev->base_addr;
363 long ee_addr = ioaddr + mear;
367 outl(EEREQ, ee_addr);
368 while(waittime < 2000) {
369 if(inl(ee_addr) & EEGNT) {
371 /* get MAC address from EEPROM */
372 for (i = 0; i < 3; i++)
373 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
375 outl(EEDONE, ee_addr);
382 outl(EEDONE, ee_addr);
387 * sis900_probe - Probe for sis900 device
388 * @pci_dev: the sis900 pci device
389 * @pci_id: the pci device ID
391 * Check and probe sis900 net device for @pci_dev.
392 * Get mac address according to the chip revision,
393 * and assign SiS900-specific entries in the device structure.
394 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
397 static int __devinit sis900_probe(struct pci_dev *pci_dev,
398 const struct pci_device_id *pci_id)
400 struct sis900_private *sis_priv;
401 struct net_device *net_dev;
407 const char *card_name = card_names[pci_id->driver_data];
408 const char *dev_name = pci_name(pci_dev);
410 /* when built into the kernel, we only print version if device is found */
412 static int printed_version;
413 if (!printed_version++)
417 /* setup various bits in PCI command register */
418 ret = pci_enable_device(pci_dev);
421 i = pci_set_dma_mask(pci_dev, DMA_32BIT_MASK);
423 printk(KERN_ERR "sis900.c: architecture does not support"
424 "32bit PCI busmaster DMA\n");
428 pci_set_master(pci_dev);
430 net_dev = alloc_etherdev(sizeof(struct sis900_private));
433 SET_MODULE_OWNER(net_dev);
434 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
436 /* We do a request_region() to register /proc/ioports info. */
437 ioaddr = pci_resource_start(pci_dev, 0);
438 ret = pci_request_regions(pci_dev, "sis900");
442 sis_priv = net_dev->priv;
443 net_dev->base_addr = ioaddr;
444 net_dev->irq = pci_dev->irq;
445 sis_priv->pci_dev = pci_dev;
446 spin_lock_init(&sis_priv->lock);
448 pci_set_drvdata(pci_dev, net_dev);
450 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
453 goto err_out_cleardev;
455 sis_priv->tx_ring = (BufferDesc *)ring_space;
456 sis_priv->tx_ring_dma = ring_dma;
458 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
463 sis_priv->rx_ring = (BufferDesc *)ring_space;
464 sis_priv->rx_ring_dma = ring_dma;
466 /* The SiS900-specific entries in the device structure. */
467 net_dev->open = &sis900_open;
468 net_dev->hard_start_xmit = &sis900_start_xmit;
469 net_dev->stop = &sis900_close;
470 net_dev->get_stats = &sis900_get_stats;
471 net_dev->set_config = &sis900_set_config;
472 net_dev->set_multicast_list = &set_rx_mode;
473 net_dev->do_ioctl = &mii_ioctl;
474 net_dev->tx_timeout = sis900_tx_timeout;
475 net_dev->watchdog_timeo = TX_TIMEOUT;
476 net_dev->ethtool_ops = &sis900_ethtool_ops;
478 #ifdef CONFIG_NET_POLL_CONTROLLER
479 net_dev->poll_controller = &sis900_poll;
482 if (sis900_debug > 0)
483 sis_priv->msg_enable = sis900_debug;
485 sis_priv->msg_enable = SIS900_DEF_MSG;
487 sis_priv->mii_info.dev = net_dev;
488 sis_priv->mii_info.mdio_read = mdio_read;
489 sis_priv->mii_info.mdio_write = mdio_write;
490 sis_priv->mii_info.phy_id_mask = 0x1f;
491 sis_priv->mii_info.reg_num_mask = 0x1f;
493 /* Get Mac address according to the chip revision */
494 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &(sis_priv->chipset_rev));
495 if(netif_msg_probe(sis_priv))
496 printk(KERN_DEBUG "%s: detected revision %2.2x, "
497 "trying to get MAC address...\n",
498 dev_name, sis_priv->chipset_rev);
501 if (sis_priv->chipset_rev == SIS630E_900_REV)
502 ret = sis630e_get_mac_addr(pci_dev, net_dev);
503 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
504 ret = sis635_get_mac_addr(pci_dev, net_dev);
505 else if (sis_priv->chipset_rev == SIS96x_900_REV)
506 ret = sis96x_get_mac_addr(pci_dev, net_dev);
508 ret = sis900_get_mac_addr(pci_dev, net_dev);
511 printk(KERN_WARNING "%s: Cannot read MAC address.\n", dev_name);
516 /* 630ET : set the mii access mode as software-mode */
517 if (sis_priv->chipset_rev == SIS630ET_900_REV)
518 outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
520 /* probe for mii transceiver */
521 if (sis900_mii_probe(net_dev) == 0) {
522 printk(KERN_WARNING "%s: Error probing MII device.\n",
528 /* save our host bridge revision */
529 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
531 pci_read_config_byte(dev, PCI_CLASS_REVISION, &sis_priv->host_bridge_rev);
535 ret = register_netdev(net_dev);
539 /* print some information about our NIC */
540 printk(KERN_INFO "%s: %s at %#lx, IRQ %d, ", net_dev->name,
541 card_name, ioaddr, net_dev->irq);
542 for (i = 0; i < 5; i++)
543 printk("%2.2x:", (u8)net_dev->dev_addr[i]);
544 printk("%2.2x.\n", net_dev->dev_addr[i]);
546 /* Detect Wake on Lan support */
547 ret = (inl(net_dev->base_addr + CFGPMC) & PMESP) >> 27;
548 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
549 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
554 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
555 sis_priv->rx_ring_dma);
557 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
558 sis_priv->tx_ring_dma);
560 pci_set_drvdata(pci_dev, NULL);
561 pci_release_regions(pci_dev);
563 free_netdev(net_dev);
568 * sis900_mii_probe - Probe MII PHY for sis900
569 * @net_dev: the net device to probe for
571 * Search for total of 32 possible mii phy addresses.
572 * Identify and set current phy if found one,
573 * return error if it failed to found.
576 static int __init sis900_mii_probe(struct net_device * net_dev)
578 struct sis900_private * sis_priv = net_dev->priv;
579 const char *dev_name = pci_name(sis_priv->pci_dev);
580 u16 poll_bit = MII_STAT_LINK, status = 0;
581 unsigned long timeout = jiffies + 5 * HZ;
584 sis_priv->mii = NULL;
586 /* search for total of 32 possible mii phy addresses */
587 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
588 struct mii_phy * mii_phy = NULL;
593 for(i = 0; i < 2; i++)
594 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
596 if (mii_status == 0xffff || mii_status == 0x0000) {
597 if (netif_msg_probe(sis_priv))
598 printk(KERN_DEBUG "%s: MII at address %d"
604 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
605 printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n");
606 mii_phy = sis_priv->first_mii;
610 mii_phy = mii_phy->next;
616 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
617 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
618 mii_phy->phy_addr = phy_addr;
619 mii_phy->status = mii_status;
620 mii_phy->next = sis_priv->mii;
621 sis_priv->mii = mii_phy;
622 sis_priv->first_mii = mii_phy;
624 for (i = 0; mii_chip_table[i].phy_id1; i++)
625 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
626 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
627 mii_phy->phy_types = mii_chip_table[i].phy_types;
628 if (mii_chip_table[i].phy_types == MIX)
630 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
631 printk(KERN_INFO "%s: %s transceiver found "
634 mii_chip_table[i].name,
639 if( !mii_chip_table[i].phy_id1 ) {
640 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
642 mii_phy->phy_types = UNKNOWN;
646 if (sis_priv->mii == NULL) {
647 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
651 /* select default PHY for mac */
652 sis_priv->mii = NULL;
653 sis900_default_phy( net_dev );
655 /* Reset phy if default phy is internal sis900 */
656 if ((sis_priv->mii->phy_id0 == 0x001D) &&
657 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
658 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
660 /* workaround for ICS1893 PHY */
661 if ((sis_priv->mii->phy_id0 == 0x0015) &&
662 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
663 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
665 if(status & MII_STAT_LINK){
669 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
670 if (time_after_eq(jiffies, timeout)) {
671 printk(KERN_WARNING "%s: reset phy and link down now\n",
678 if (sis_priv->chipset_rev == SIS630E_900_REV) {
679 /* SiS 630E has some bugs on default value of PHY registers */
680 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
681 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
682 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
683 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
684 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
687 if (sis_priv->mii->status & MII_STAT_LINK)
688 netif_carrier_on(net_dev);
690 netif_carrier_off(net_dev);
696 * sis900_default_phy - Select default PHY for sis900 mac.
697 * @net_dev: the net device to probe for
699 * Select first detected PHY with link as default.
700 * If no one is link on, select PHY whose types is HOME as default.
701 * If HOME doesn't exist, select LAN.
704 static u16 sis900_default_phy(struct net_device * net_dev)
706 struct sis900_private * sis_priv = net_dev->priv;
707 struct mii_phy *phy = NULL, *phy_home = NULL,
708 *default_phy = NULL, *phy_lan = NULL;
711 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
712 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
713 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
715 /* Link ON & Not select default PHY & not ghost PHY */
716 if ((status & MII_STAT_LINK) && !default_phy &&
717 (phy->phy_types != UNKNOWN))
720 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
721 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
722 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
723 if (phy->phy_types == HOME)
725 else if(phy->phy_types == LAN)
730 if (!default_phy && phy_home)
731 default_phy = phy_home;
732 else if (!default_phy && phy_lan)
733 default_phy = phy_lan;
734 else if (!default_phy)
735 default_phy = sis_priv->first_mii;
737 if (sis_priv->mii != default_phy) {
738 sis_priv->mii = default_phy;
739 sis_priv->cur_phy = default_phy->phy_addr;
740 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
741 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
744 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
746 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
747 status &= (~MII_CNTL_ISOLATE);
749 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
750 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
751 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
758 * sis900_set_capability - set the media capability of network adapter.
759 * @net_dev : the net device to probe for
762 * Set the media capability of network adapter according to
763 * mii status register. It's necessary before auto-negotiate.
766 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
771 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
772 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
774 cap = MII_NWAY_CSMA_CD |
775 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
776 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
777 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
778 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
780 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
784 /* Delay between EEPROM clock transitions. */
785 #define eeprom_delay() inl(ee_addr)
788 * read_eeprom - Read Serial EEPROM
789 * @ioaddr: base i/o address
790 * @location: the EEPROM location to read
792 * Read Serial EEPROM through EEPROM Access Register.
793 * Note that location is in word (16 bits) unit
796 static u16 __devinit read_eeprom(long ioaddr, int location)
800 long ee_addr = ioaddr + mear;
801 u32 read_cmd = location | EEread;
808 /* Shift the read command (9) bits out. */
809 for (i = 8; i >= 0; i--) {
810 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
811 outl(dataval, ee_addr);
813 outl(dataval | EECLK, ee_addr);
819 /* read the 16-bits data in */
820 for (i = 16; i > 0; i--) {
823 outl(EECS | EECLK, ee_addr);
825 retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
829 /* Terminate the EEPROM access. */
836 /* Read and write the MII management registers using software-generated
837 serial MDIO protocol. Note that the command bits and data bits are
838 send out separately */
839 #define mdio_delay() inl(mdio_addr)
841 static void mdio_idle(long mdio_addr)
843 outl(MDIO | MDDIR, mdio_addr);
845 outl(MDIO | MDDIR | MDC, mdio_addr);
848 /* Syncronize the MII management interface by shifting 32 one bits out. */
849 static void mdio_reset(long mdio_addr)
853 for (i = 31; i >= 0; i--) {
854 outl(MDDIR | MDIO, mdio_addr);
856 outl(MDDIR | MDIO | MDC, mdio_addr);
863 * mdio_read - read MII PHY register
864 * @net_dev: the net device to read
865 * @phy_id: the phy address to read
866 * @location: the phy regiester id to read
868 * Read MII registers through MDIO and MDC
869 * using MDIO management frame structure and protocol(defined by ISO/IEC).
870 * Please see SiS7014 or ICS spec
873 static int mdio_read(struct net_device *net_dev, int phy_id, int location)
875 long mdio_addr = net_dev->base_addr + mear;
876 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
880 mdio_reset(mdio_addr);
881 mdio_idle(mdio_addr);
883 for (i = 15; i >= 0; i--) {
884 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
885 outl(dataval, mdio_addr);
887 outl(dataval | MDC, mdio_addr);
891 /* Read the 16 data bits. */
892 for (i = 16; i > 0; i--) {
895 retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
896 outl(MDC, mdio_addr);
899 outl(0x00, mdio_addr);
905 * mdio_write - write MII PHY register
906 * @net_dev: the net device to write
907 * @phy_id: the phy address to write
908 * @location: the phy regiester id to write
909 * @value: the register value to write with
911 * Write MII registers with @value through MDIO and MDC
912 * using MDIO management frame structure and protocol(defined by ISO/IEC)
913 * please see SiS7014 or ICS spec
916 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
919 long mdio_addr = net_dev->base_addr + mear;
920 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
923 mdio_reset(mdio_addr);
924 mdio_idle(mdio_addr);
926 /* Shift the command bits out. */
927 for (i = 15; i >= 0; i--) {
928 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
929 outb(dataval, mdio_addr);
931 outb(dataval | MDC, mdio_addr);
936 /* Shift the value bits out. */
937 for (i = 15; i >= 0; i--) {
938 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
939 outl(dataval, mdio_addr);
941 outl(dataval | MDC, mdio_addr);
946 /* Clear out extra bits. */
947 for (i = 2; i > 0; i--) {
950 outb(MDC, mdio_addr);
953 outl(0x00, mdio_addr);
960 * sis900_reset_phy - reset sis900 mii phy.
961 * @net_dev: the net device to write
962 * @phy_addr: default phy address
964 * Some specific phy can't work properly without reset.
965 * This function will be called during initialization and
966 * link status change from ON to DOWN.
969 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
974 for (i = 0; i < 2; i++)
975 status = mdio_read(net_dev, phy_addr, MII_STATUS);
977 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
982 #ifdef CONFIG_NET_POLL_CONTROLLER
984 * Polling 'interrupt' - used by things like netconsole to send skbs
985 * without having to re-enable interrupts. It's not called while
986 * the interrupt routine is executing.
988 static void sis900_poll(struct net_device *dev)
990 disable_irq(dev->irq);
991 sis900_interrupt(dev->irq, dev);
992 enable_irq(dev->irq);
997 * sis900_open - open sis900 device
998 * @net_dev: the net device to open
1000 * Do some initialization and start net interface.
1001 * enable interrupts and set sis900 timer.
1005 sis900_open(struct net_device *net_dev)
1007 struct sis900_private *sis_priv = net_dev->priv;
1008 long ioaddr = net_dev->base_addr;
1011 /* Soft reset the chip. */
1012 sis900_reset(net_dev);
1014 /* Equalizer workaround Rule */
1015 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1017 ret = request_irq(net_dev->irq, &sis900_interrupt, IRQF_SHARED,
1018 net_dev->name, net_dev);
1022 sis900_init_rxfilter(net_dev);
1024 sis900_init_tx_ring(net_dev);
1025 sis900_init_rx_ring(net_dev);
1027 set_rx_mode(net_dev);
1029 netif_start_queue(net_dev);
1031 /* Workaround for EDB */
1032 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1034 /* Enable all known interrupts by setting the interrupt mask. */
1035 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1036 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
1037 outl(IE, ioaddr + ier);
1039 sis900_check_mode(net_dev, sis_priv->mii);
1041 /* Set the timer to switch to check for link beat and perhaps switch
1042 to an alternate media type. */
1043 init_timer(&sis_priv->timer);
1044 sis_priv->timer.expires = jiffies + HZ;
1045 sis_priv->timer.data = (unsigned long)net_dev;
1046 sis_priv->timer.function = &sis900_timer;
1047 add_timer(&sis_priv->timer);
1053 * sis900_init_rxfilter - Initialize the Rx filter
1054 * @net_dev: the net device to initialize for
1056 * Set receive filter address to our MAC address
1057 * and enable packet filtering.
1061 sis900_init_rxfilter (struct net_device * net_dev)
1063 struct sis900_private *sis_priv = net_dev->priv;
1064 long ioaddr = net_dev->base_addr;
1068 rfcrSave = inl(rfcr + ioaddr);
1070 /* disable packet filtering before setting filter */
1071 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
1073 /* load MAC addr to filter data register */
1074 for (i = 0 ; i < 3 ; i++) {
1077 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1078 outl((i << RFADDR_shift), ioaddr + rfcr);
1079 outl(w, ioaddr + rfdr);
1081 if (netif_msg_hw(sis_priv)) {
1082 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1083 net_dev->name, i, inl(ioaddr + rfdr));
1087 /* enable packet filtering */
1088 outl(rfcrSave | RFEN, rfcr + ioaddr);
1092 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1093 * @net_dev: the net device to initialize for
1095 * Initialize the Tx descriptor ring,
1099 sis900_init_tx_ring(struct net_device *net_dev)
1101 struct sis900_private *sis_priv = net_dev->priv;
1102 long ioaddr = net_dev->base_addr;
1105 sis_priv->tx_full = 0;
1106 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1108 for (i = 0; i < NUM_TX_DESC; i++) {
1109 sis_priv->tx_skbuff[i] = NULL;
1111 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1112 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1113 sis_priv->tx_ring[i].cmdsts = 0;
1114 sis_priv->tx_ring[i].bufptr = 0;
1117 /* load Transmit Descriptor Register */
1118 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1119 if (netif_msg_hw(sis_priv))
1120 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1121 net_dev->name, inl(ioaddr + txdp));
1125 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1126 * @net_dev: the net device to initialize for
1128 * Initialize the Rx descriptor ring,
1129 * and pre-allocate recevie buffers (socket buffer)
1133 sis900_init_rx_ring(struct net_device *net_dev)
1135 struct sis900_private *sis_priv = net_dev->priv;
1136 long ioaddr = net_dev->base_addr;
1139 sis_priv->cur_rx = 0;
1140 sis_priv->dirty_rx = 0;
1142 /* init RX descriptor */
1143 for (i = 0; i < NUM_RX_DESC; i++) {
1144 sis_priv->rx_skbuff[i] = NULL;
1146 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1147 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1148 sis_priv->rx_ring[i].cmdsts = 0;
1149 sis_priv->rx_ring[i].bufptr = 0;
1152 /* allocate sock buffers */
1153 for (i = 0; i < NUM_RX_DESC; i++) {
1154 struct sk_buff *skb;
1156 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1157 /* not enough memory for skbuff, this makes a "hole"
1158 on the buffer ring, it is not clear how the
1159 hardware will react to this kind of degenerated
1164 sis_priv->rx_skbuff[i] = skb;
1165 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1166 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
1167 skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1169 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1171 /* load Receive Descriptor Register */
1172 outl(sis_priv->rx_ring_dma, ioaddr + rxdp);
1173 if (netif_msg_hw(sis_priv))
1174 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1175 net_dev->name, inl(ioaddr + rxdp));
1179 * sis630_set_eq - set phy equalizer value for 630 LAN
1180 * @net_dev: the net device to set equalizer value
1181 * @revision: 630 LAN revision number
1183 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1184 * PHY register 14h(Test)
1185 * Bit 14: 0 -- Automatically dectect (default)
1186 * 1 -- Manually set Equalizer filter
1187 * Bit 13: 0 -- (Default)
1188 * 1 -- Speed up convergence of equalizer setting
1189 * Bit 9 : 0 -- (Default)
1190 * 1 -- Disable Baseline Wander
1191 * Bit 3~7 -- Equalizer filter setting
1192 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1193 * Then calculate equalizer value
1194 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1195 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1196 * Calculate Equalizer value:
1197 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-dectect proper equalizer value.
1198 * When the equalizer is stable, this value is not a fixed value. It will be within
1199 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1200 * 0 <= max <= 4 --> set equalizer to max
1201 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1202 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1205 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1207 struct sis900_private *sis_priv = net_dev->priv;
1208 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1211 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1212 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1215 if (netif_carrier_ok(net_dev)) {
1216 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1217 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1218 (0x2200 | reg14h) & 0xBFFF);
1219 for (i=0; i < maxcount; i++) {
1220 eq_value = (0x00F8 & mdio_read(net_dev,
1221 sis_priv->cur_phy, MII_RESV)) >> 3;
1223 max_value=min_value=eq_value;
1224 max_value = (eq_value > max_value) ?
1225 eq_value : max_value;
1226 min_value = (eq_value < min_value) ?
1227 eq_value : min_value;
1229 /* 630E rule to determine the equalizer value */
1230 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1231 revision == SIS630ET_900_REV) {
1233 eq_value = max_value;
1234 else if (max_value >= 5 && max_value < 15)
1235 eq_value = (max_value == min_value) ?
1236 max_value+2 : max_value+1;
1237 else if (max_value >= 15)
1238 eq_value=(max_value == min_value) ?
1239 max_value+6 : max_value+5;
1241 /* 630B0&B1 rule to determine the equalizer value */
1242 if (revision == SIS630A_900_REV &&
1243 (sis_priv->host_bridge_rev == SIS630B0 ||
1244 sis_priv->host_bridge_rev == SIS630B1)) {
1248 eq_value = (max_value + min_value + 1)/2;
1250 /* write equalizer value and setting */
1251 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1252 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1253 reg14h = (reg14h | 0x6000) & 0xFDFF;
1254 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1256 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1257 if (revision == SIS630A_900_REV &&
1258 (sis_priv->host_bridge_rev == SIS630B0 ||
1259 sis_priv->host_bridge_rev == SIS630B1))
1260 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1261 (reg14h | 0x2200) & 0xBFFF);
1263 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1264 (reg14h | 0x2000) & 0xBFFF);
1270 * sis900_timer - sis900 timer routine
1271 * @data: pointer to sis900 net device
1273 * On each timer ticks we check two things,
1274 * link status (ON/OFF) and link mode (10/100/Full/Half)
1277 static void sis900_timer(unsigned long data)
1279 struct net_device *net_dev = (struct net_device *)data;
1280 struct sis900_private *sis_priv = net_dev->priv;
1281 struct mii_phy *mii_phy = sis_priv->mii;
1282 static const int next_tick = 5*HZ;
1285 if (!sis_priv->autong_complete){
1286 int speed, duplex = 0;
1288 sis900_read_mode(net_dev, &speed, &duplex);
1290 sis900_set_mode(net_dev->base_addr, speed, duplex);
1291 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1292 netif_start_queue(net_dev);
1295 sis_priv->timer.expires = jiffies + HZ;
1296 add_timer(&sis_priv->timer);
1300 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1301 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1303 /* Link OFF -> ON */
1304 if (!netif_carrier_ok(net_dev)) {
1306 /* Search for new PHY */
1307 status = sis900_default_phy(net_dev);
1308 mii_phy = sis_priv->mii;
1310 if (status & MII_STAT_LINK){
1311 sis900_check_mode(net_dev, mii_phy);
1312 netif_carrier_on(net_dev);
1315 /* Link ON -> OFF */
1316 if (!(status & MII_STAT_LINK)){
1317 netif_carrier_off(net_dev);
1318 if(netif_msg_link(sis_priv))
1319 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1321 /* Change mode issue */
1322 if ((mii_phy->phy_id0 == 0x001D) &&
1323 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1324 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1326 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1332 sis_priv->timer.expires = jiffies + next_tick;
1333 add_timer(&sis_priv->timer);
1337 * sis900_check_mode - check the media mode for sis900
1338 * @net_dev: the net device to be checked
1339 * @mii_phy: the mii phy
1341 * Older driver gets the media mode from mii status output
1342 * register. Now we set our media capability and auto-negotiate
1343 * to get the upper bound of speed and duplex between two ends.
1344 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1345 * and autong_complete should be set to 1.
1348 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1350 struct sis900_private *sis_priv = net_dev->priv;
1351 long ioaddr = net_dev->base_addr;
1354 if (mii_phy->phy_types == LAN) {
1355 outl(~EXD & inl(ioaddr + cfg), ioaddr + cfg);
1356 sis900_set_capability(net_dev , mii_phy);
1357 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1359 outl(EXD | inl(ioaddr + cfg), ioaddr + cfg);
1360 speed = HW_SPEED_HOME;
1361 duplex = FDX_CAPABLE_HALF_SELECTED;
1362 sis900_set_mode(ioaddr, speed, duplex);
1363 sis_priv->autong_complete = 1;
1368 * sis900_set_mode - Set the media mode of mac register.
1369 * @ioaddr: the address of the device
1370 * @speed : the transmit speed to be determined
1371 * @duplex: the duplex mode to be determined
1373 * Set the media mode of mac register txcfg/rxcfg according to
1374 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1375 * bus is used instead of PCI bus. When this bit is set 1, the
1376 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1380 static void sis900_set_mode (long ioaddr, int speed, int duplex)
1382 u32 tx_flags = 0, rx_flags = 0;
1384 if (inl(ioaddr + cfg) & EDB_MASTER_EN) {
1385 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1386 (TX_FILL_THRESH << TxFILLT_shift);
1387 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1389 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1390 (TX_FILL_THRESH << TxFILLT_shift);
1391 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1394 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1395 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1396 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1398 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1399 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1402 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1403 tx_flags |= (TxCSI | TxHBI);
1407 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1408 /* Can accept Jumbo packet */
1412 outl (tx_flags, ioaddr + txcfg);
1413 outl (rx_flags, ioaddr + rxcfg);
1417 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1418 * @net_dev: the net device to read mode for
1419 * @phy_addr: mii phy address
1421 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1422 * autong_complete should be set to 0 when starting auto-negotiation.
1423 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1424 * sis900_timer will wait for link on again if autong_complete = 0.
1427 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1429 struct sis900_private *sis_priv = net_dev->priv;
1433 for (i = 0; i < 2; i++)
1434 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1436 if (!(status & MII_STAT_LINK)){
1437 if(netif_msg_link(sis_priv))
1438 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1439 sis_priv->autong_complete = 1;
1440 netif_carrier_off(net_dev);
1444 /* (Re)start AutoNegotiate */
1445 mdio_write(net_dev, phy_addr, MII_CONTROL,
1446 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1447 sis_priv->autong_complete = 0;
1452 * sis900_read_mode - read media mode for sis900 internal phy
1453 * @net_dev: the net device to read mode for
1454 * @speed : the transmit speed to be determined
1455 * @duplex : the duplex mode to be determined
1457 * The capability of remote end will be put in mii register autorec
1458 * after auto-negotiation. Use AND operation to get the upper bound
1459 * of speed and duplex between two ends.
1462 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1464 struct sis900_private *sis_priv = net_dev->priv;
1465 struct mii_phy *phy = sis_priv->mii;
1466 int phy_addr = sis_priv->cur_phy;
1468 u16 autoadv, autorec;
1471 for (i = 0; i < 2; i++)
1472 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1474 if (!(status & MII_STAT_LINK))
1477 /* AutoNegotiate completed */
1478 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1479 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1480 status = autoadv & autorec;
1482 *speed = HW_SPEED_10_MBPS;
1483 *duplex = FDX_CAPABLE_HALF_SELECTED;
1485 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1486 *speed = HW_SPEED_100_MBPS;
1487 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1488 *duplex = FDX_CAPABLE_FULL_SELECTED;
1490 sis_priv->autong_complete = 1;
1492 /* Workaround for Realtek RTL8201 PHY issue */
1493 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1494 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1495 *duplex = FDX_CAPABLE_FULL_SELECTED;
1496 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1497 *speed = HW_SPEED_100_MBPS;
1500 if(netif_msg_link(sis_priv))
1501 printk(KERN_INFO "%s: Media Link On %s %s-duplex \n",
1503 *speed == HW_SPEED_100_MBPS ?
1504 "100mbps" : "10mbps",
1505 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1510 * sis900_tx_timeout - sis900 transmit timeout routine
1511 * @net_dev: the net device to transmit
1513 * print transmit timeout status
1514 * disable interrupts and do some tasks
1517 static void sis900_tx_timeout(struct net_device *net_dev)
1519 struct sis900_private *sis_priv = net_dev->priv;
1520 long ioaddr = net_dev->base_addr;
1521 unsigned long flags;
1524 if(netif_msg_tx_err(sis_priv))
1525 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x \n",
1526 net_dev->name, inl(ioaddr + cr), inl(ioaddr + isr));
1528 /* Disable interrupts by clearing the interrupt mask. */
1529 outl(0x0000, ioaddr + imr);
1531 /* use spinlock to prevent interrupt handler accessing buffer ring */
1532 spin_lock_irqsave(&sis_priv->lock, flags);
1534 /* discard unsent packets */
1535 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1536 for (i = 0; i < NUM_TX_DESC; i++) {
1537 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1540 pci_unmap_single(sis_priv->pci_dev,
1541 sis_priv->tx_ring[i].bufptr, skb->len,
1543 dev_kfree_skb_irq(skb);
1544 sis_priv->tx_skbuff[i] = NULL;
1545 sis_priv->tx_ring[i].cmdsts = 0;
1546 sis_priv->tx_ring[i].bufptr = 0;
1547 sis_priv->stats.tx_dropped++;
1550 sis_priv->tx_full = 0;
1551 netif_wake_queue(net_dev);
1553 spin_unlock_irqrestore(&sis_priv->lock, flags);
1555 net_dev->trans_start = jiffies;
1557 /* load Transmit Descriptor Register */
1558 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1560 /* Enable all known interrupts by setting the interrupt mask. */
1561 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1566 * sis900_start_xmit - sis900 start transmit routine
1567 * @skb: socket buffer pointer to put the data being transmitted
1568 * @net_dev: the net device to transmit with
1570 * Set the transmit buffer descriptor,
1571 * and write TxENA to enable transmit state machine.
1572 * tell upper layer if the buffer is full
1576 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1578 struct sis900_private *sis_priv = net_dev->priv;
1579 long ioaddr = net_dev->base_addr;
1581 unsigned long flags;
1582 unsigned int index_cur_tx, index_dirty_tx;
1583 unsigned int count_dirty_tx;
1585 /* Don't transmit data before the complete of auto-negotiation */
1586 if(!sis_priv->autong_complete){
1587 netif_stop_queue(net_dev);
1591 spin_lock_irqsave(&sis_priv->lock, flags);
1593 /* Calculate the next Tx descriptor entry. */
1594 entry = sis_priv->cur_tx % NUM_TX_DESC;
1595 sis_priv->tx_skbuff[entry] = skb;
1597 /* set the transmit buffer descriptor and enable Transmit State Machine */
1598 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1599 skb->data, skb->len, PCI_DMA_TODEVICE);
1600 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1601 outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
1603 sis_priv->cur_tx ++;
1604 index_cur_tx = sis_priv->cur_tx;
1605 index_dirty_tx = sis_priv->dirty_tx;
1607 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1610 if (index_cur_tx == index_dirty_tx) {
1611 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1612 sis_priv->tx_full = 1;
1613 netif_stop_queue(net_dev);
1614 } else if (count_dirty_tx < NUM_TX_DESC) {
1615 /* Typical path, tell upper layer that more transmission is possible */
1616 netif_start_queue(net_dev);
1618 /* buffer full, tell upper layer no more transmission */
1619 sis_priv->tx_full = 1;
1620 netif_stop_queue(net_dev);
1623 spin_unlock_irqrestore(&sis_priv->lock, flags);
1625 net_dev->trans_start = jiffies;
1627 if (netif_msg_tx_queued(sis_priv))
1628 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1630 net_dev->name, skb->data, (int)skb->len, entry);
1636 * sis900_interrupt - sis900 interrupt handler
1637 * @irq: the irq number
1638 * @dev_instance: the client data object
1639 * @regs: snapshot of processor context
1641 * The interrupt handler does all of the Rx thread work,
1642 * and cleans up after the Tx thread
1645 static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
1647 struct net_device *net_dev = dev_instance;
1648 struct sis900_private *sis_priv = net_dev->priv;
1649 int boguscnt = max_interrupt_work;
1650 long ioaddr = net_dev->base_addr;
1652 unsigned int handled = 0;
1654 spin_lock (&sis_priv->lock);
1657 status = inl(ioaddr + isr);
1659 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1660 /* nothing intresting happened */
1664 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1665 if (status & (RxORN | RxERR | RxOK))
1669 if (status & (TxURN | TxERR | TxIDLE))
1671 sis900_finish_xmit(net_dev);
1673 /* something strange happened !!! */
1674 if (status & HIBERR) {
1675 if(netif_msg_intr(sis_priv))
1676 printk(KERN_INFO "%s: Abnormal interrupt,"
1677 "status %#8.8x.\n", net_dev->name, status);
1680 if (--boguscnt < 0) {
1681 if(netif_msg_intr(sis_priv))
1682 printk(KERN_INFO "%s: Too much work at interrupt, "
1683 "interrupt status = %#8.8x.\n",
1684 net_dev->name, status);
1689 if(netif_msg_intr(sis_priv))
1690 printk(KERN_DEBUG "%s: exiting interrupt, "
1691 "interrupt status = 0x%#8.8x.\n",
1692 net_dev->name, inl(ioaddr + isr));
1694 spin_unlock (&sis_priv->lock);
1695 return IRQ_RETVAL(handled);
1699 * sis900_rx - sis900 receive routine
1700 * @net_dev: the net device which receives data
1702 * Process receive interrupt events,
1703 * put buffer to higher layer and refill buffer pool
1704 * Note: This function is called by interrupt handler,
1705 * don't do "too much" work here
1708 static int sis900_rx(struct net_device *net_dev)
1710 struct sis900_private *sis_priv = net_dev->priv;
1711 long ioaddr = net_dev->base_addr;
1712 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1713 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1716 if (netif_msg_rx_status(sis_priv))
1717 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1719 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1720 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
1722 while (rx_status & OWN) {
1723 unsigned int rx_size;
1724 unsigned int data_size;
1726 if (--rx_work_limit < 0)
1729 data_size = rx_status & DSIZE;
1730 rx_size = data_size - CRC_SIZE;
1732 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1733 /* ``TOOLONG'' flag means jumbo packet recived. */
1734 if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
1735 rx_status &= (~ ((unsigned int)TOOLONG));
1738 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1739 /* corrupted packet received */
1740 if (netif_msg_rx_err(sis_priv))
1741 printk(KERN_DEBUG "%s: Corrupted packet "
1742 "received, buffer status = 0x%8.8x/%d.\n",
1743 net_dev->name, rx_status, data_size);
1744 sis_priv->stats.rx_errors++;
1745 if (rx_status & OVERRUN)
1746 sis_priv->stats.rx_over_errors++;
1747 if (rx_status & (TOOLONG|RUNT))
1748 sis_priv->stats.rx_length_errors++;
1749 if (rx_status & (RXISERR | FAERR))
1750 sis_priv->stats.rx_frame_errors++;
1751 if (rx_status & CRCERR)
1752 sis_priv->stats.rx_crc_errors++;
1753 /* reset buffer descriptor state */
1754 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1756 struct sk_buff * skb;
1758 /* This situation should never happen, but due to
1759 some unknow bugs, it is possible that
1760 we are working on NULL sk_buff :-( */
1761 if (sis_priv->rx_skbuff[entry] == NULL) {
1762 if (netif_msg_rx_err(sis_priv))
1763 printk(KERN_WARNING "%s: NULL pointer "
1764 "encountered in Rx ring\n"
1765 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1766 net_dev->name, sis_priv->cur_rx,
1767 sis_priv->dirty_rx);
1771 pci_unmap_single(sis_priv->pci_dev,
1772 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1773 PCI_DMA_FROMDEVICE);
1774 /* give the socket buffer to upper layers */
1775 skb = sis_priv->rx_skbuff[entry];
1776 skb_put(skb, rx_size);
1777 skb->protocol = eth_type_trans(skb, net_dev);
1780 /* some network statistics */
1781 if ((rx_status & BCAST) == MCAST)
1782 sis_priv->stats.multicast++;
1783 net_dev->last_rx = jiffies;
1784 sis_priv->stats.rx_bytes += rx_size;
1785 sis_priv->stats.rx_packets++;
1787 /* refill the Rx buffer, what if there is not enought
1788 * memory for new socket buffer ?? */
1789 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1790 /* not enough memory for skbuff, this makes a
1791 * "hole" on the buffer ring, it is not clear
1792 * how the hardware will react to this kind
1793 * of degenerated buffer */
1794 if (netif_msg_rx_status(sis_priv))
1795 printk(KERN_INFO "%s: Memory squeeze,"
1796 "deferring packet.\n",
1798 sis_priv->rx_skbuff[entry] = NULL;
1799 /* reset buffer descriptor state */
1800 sis_priv->rx_ring[entry].cmdsts = 0;
1801 sis_priv->rx_ring[entry].bufptr = 0;
1802 sis_priv->stats.rx_dropped++;
1807 sis_priv->rx_skbuff[entry] = skb;
1808 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1809 sis_priv->rx_ring[entry].bufptr =
1810 pci_map_single(sis_priv->pci_dev, skb->data,
1811 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1812 sis_priv->dirty_rx++;
1815 entry = sis_priv->cur_rx % NUM_RX_DESC;
1816 rx_status = sis_priv->rx_ring[entry].cmdsts;
1819 /* refill the Rx buffer, what if the rate of refilling is slower
1820 * than consuming ?? */
1821 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
1822 struct sk_buff *skb;
1824 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1826 if (sis_priv->rx_skbuff[entry] == NULL) {
1827 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1828 /* not enough memory for skbuff, this makes a
1829 * "hole" on the buffer ring, it is not clear
1830 * how the hardware will react to this kind
1831 * of degenerated buffer */
1832 if (netif_msg_rx_err(sis_priv))
1833 printk(KERN_INFO "%s: Memory squeeze,"
1834 "deferring packet.\n",
1836 sis_priv->stats.rx_dropped++;
1840 sis_priv->rx_skbuff[entry] = skb;
1841 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1842 sis_priv->rx_ring[entry].bufptr =
1843 pci_map_single(sis_priv->pci_dev, skb->data,
1844 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1847 /* re-enable the potentially idle receive state matchine */
1848 outl(RxENA | inl(ioaddr + cr), ioaddr + cr );
1854 * sis900_finish_xmit - finish up transmission of packets
1855 * @net_dev: the net device to be transmitted on
1857 * Check for error condition and free socket buffer etc
1858 * schedule for more transmission as needed
1859 * Note: This function is called by interrupt handler,
1860 * don't do "too much" work here
1863 static void sis900_finish_xmit (struct net_device *net_dev)
1865 struct sis900_private *sis_priv = net_dev->priv;
1867 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1868 struct sk_buff *skb;
1872 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1873 tx_status = sis_priv->tx_ring[entry].cmdsts;
1875 if (tx_status & OWN) {
1876 /* The packet is not transmitted yet (owned by hardware) !
1877 * Note: the interrupt is generated only when Tx Machine
1878 * is idle, so this is an almost impossible case */
1882 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1883 /* packet unsuccessfully transmitted */
1884 if (netif_msg_tx_err(sis_priv))
1885 printk(KERN_DEBUG "%s: Transmit "
1886 "error, Tx status %8.8x.\n",
1887 net_dev->name, tx_status);
1888 sis_priv->stats.tx_errors++;
1889 if (tx_status & UNDERRUN)
1890 sis_priv->stats.tx_fifo_errors++;
1891 if (tx_status & ABORT)
1892 sis_priv->stats.tx_aborted_errors++;
1893 if (tx_status & NOCARRIER)
1894 sis_priv->stats.tx_carrier_errors++;
1895 if (tx_status & OWCOLL)
1896 sis_priv->stats.tx_window_errors++;
1898 /* packet successfully transmitted */
1899 sis_priv->stats.collisions += (tx_status & COLCNT) >> 16;
1900 sis_priv->stats.tx_bytes += tx_status & DSIZE;
1901 sis_priv->stats.tx_packets++;
1903 /* Free the original skb. */
1904 skb = sis_priv->tx_skbuff[entry];
1905 pci_unmap_single(sis_priv->pci_dev,
1906 sis_priv->tx_ring[entry].bufptr, skb->len,
1908 dev_kfree_skb_irq(skb);
1909 sis_priv->tx_skbuff[entry] = NULL;
1910 sis_priv->tx_ring[entry].bufptr = 0;
1911 sis_priv->tx_ring[entry].cmdsts = 0;
1914 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1915 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1916 /* The ring is no longer full, clear tx_full and schedule
1917 * more transmission by netif_wake_queue(net_dev) */
1918 sis_priv->tx_full = 0;
1919 netif_wake_queue (net_dev);
1924 * sis900_close - close sis900 device
1925 * @net_dev: the net device to be closed
1927 * Disable interrupts, stop the Tx and Rx Status Machine
1928 * free Tx and RX socket buffer
1931 static int sis900_close(struct net_device *net_dev)
1933 long ioaddr = net_dev->base_addr;
1934 struct sis900_private *sis_priv = net_dev->priv;
1935 struct sk_buff *skb;
1938 netif_stop_queue(net_dev);
1940 /* Disable interrupts by clearing the interrupt mask. */
1941 outl(0x0000, ioaddr + imr);
1942 outl(0x0000, ioaddr + ier);
1944 /* Stop the chip's Tx and Rx Status Machine */
1945 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
1947 del_timer(&sis_priv->timer);
1949 free_irq(net_dev->irq, net_dev);
1951 /* Free Tx and RX skbuff */
1952 for (i = 0; i < NUM_RX_DESC; i++) {
1953 skb = sis_priv->rx_skbuff[i];
1955 pci_unmap_single(sis_priv->pci_dev,
1956 sis_priv->rx_ring[i].bufptr,
1957 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1959 sis_priv->rx_skbuff[i] = NULL;
1962 for (i = 0; i < NUM_TX_DESC; i++) {
1963 skb = sis_priv->tx_skbuff[i];
1965 pci_unmap_single(sis_priv->pci_dev,
1966 sis_priv->tx_ring[i].bufptr, skb->len,
1969 sis_priv->tx_skbuff[i] = NULL;
1973 /* Green! Put the chip in low-power mode. */
1979 * sis900_get_drvinfo - Return information about driver
1980 * @net_dev: the net device to probe
1981 * @info: container for info returned
1983 * Process ethtool command such as "ehtool -i" to show information
1986 static void sis900_get_drvinfo(struct net_device *net_dev,
1987 struct ethtool_drvinfo *info)
1989 struct sis900_private *sis_priv = net_dev->priv;
1991 strcpy (info->driver, SIS900_MODULE_NAME);
1992 strcpy (info->version, SIS900_DRV_VERSION);
1993 strcpy (info->bus_info, pci_name(sis_priv->pci_dev));
1996 static u32 sis900_get_msglevel(struct net_device *net_dev)
1998 struct sis900_private *sis_priv = net_dev->priv;
1999 return sis_priv->msg_enable;
2002 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
2004 struct sis900_private *sis_priv = net_dev->priv;
2005 sis_priv->msg_enable = value;
2008 static u32 sis900_get_link(struct net_device *net_dev)
2010 struct sis900_private *sis_priv = net_dev->priv;
2011 return mii_link_ok(&sis_priv->mii_info);
2014 static int sis900_get_settings(struct net_device *net_dev,
2015 struct ethtool_cmd *cmd)
2017 struct sis900_private *sis_priv = net_dev->priv;
2018 spin_lock_irq(&sis_priv->lock);
2019 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2020 spin_unlock_irq(&sis_priv->lock);
2024 static int sis900_set_settings(struct net_device *net_dev,
2025 struct ethtool_cmd *cmd)
2027 struct sis900_private *sis_priv = net_dev->priv;
2029 spin_lock_irq(&sis_priv->lock);
2030 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2031 spin_unlock_irq(&sis_priv->lock);
2035 static int sis900_nway_reset(struct net_device *net_dev)
2037 struct sis900_private *sis_priv = net_dev->priv;
2038 return mii_nway_restart(&sis_priv->mii_info);
2042 * sis900_set_wol - Set up Wake on Lan registers
2043 * @net_dev: the net device to probe
2044 * @wol: container for info passed to the driver
2046 * Process ethtool command "wol" to setup wake on lan features.
2047 * SiS900 supports sending WoL events if a correct packet is received,
2048 * but there is no simple way to filter them to only a subset (broadcast,
2049 * multicast, unicast or arp).
2052 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2054 struct sis900_private *sis_priv = net_dev->priv;
2055 long pmctrl_addr = net_dev->base_addr + pmctrl;
2056 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2058 if (wol->wolopts == 0) {
2059 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2060 cfgpmcsr &= ~PME_EN;
2061 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2062 outl(pmctrl_bits, pmctrl_addr);
2063 if (netif_msg_wol(sis_priv))
2064 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2068 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2069 | WAKE_BCAST | WAKE_ARP))
2072 if (wol->wolopts & WAKE_MAGIC)
2073 pmctrl_bits |= MAGICPKT;
2074 if (wol->wolopts & WAKE_PHY)
2075 pmctrl_bits |= LINKON;
2077 outl(pmctrl_bits, pmctrl_addr);
2079 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2081 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2082 if (netif_msg_wol(sis_priv))
2083 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2088 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2090 long pmctrl_addr = net_dev->base_addr + pmctrl;
2093 pmctrl_bits = inl(pmctrl_addr);
2094 if (pmctrl_bits & MAGICPKT)
2095 wol->wolopts |= WAKE_MAGIC;
2096 if (pmctrl_bits & LINKON)
2097 wol->wolopts |= WAKE_PHY;
2099 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2102 static const struct ethtool_ops sis900_ethtool_ops = {
2103 .get_drvinfo = sis900_get_drvinfo,
2104 .get_msglevel = sis900_get_msglevel,
2105 .set_msglevel = sis900_set_msglevel,
2106 .get_link = sis900_get_link,
2107 .get_settings = sis900_get_settings,
2108 .set_settings = sis900_set_settings,
2109 .nway_reset = sis900_nway_reset,
2110 .get_wol = sis900_get_wol,
2111 .set_wol = sis900_set_wol
2115 * mii_ioctl - process MII i/o control command
2116 * @net_dev: the net device to command for
2117 * @rq: parameter for command
2118 * @cmd: the i/o command
2120 * Process MII command like read/write MII register
2123 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2125 struct sis900_private *sis_priv = net_dev->priv;
2126 struct mii_ioctl_data *data = if_mii(rq);
2129 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2130 data->phy_id = sis_priv->mii->phy_addr;
2133 case SIOCGMIIREG: /* Read MII PHY register. */
2134 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2137 case SIOCSMIIREG: /* Write MII PHY register. */
2138 if (!capable(CAP_NET_ADMIN))
2140 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2148 * sis900_get_stats - Get sis900 read/write statistics
2149 * @net_dev: the net device to get statistics for
2151 * get tx/rx statistics for sis900
2154 static struct net_device_stats *
2155 sis900_get_stats(struct net_device *net_dev)
2157 struct sis900_private *sis_priv = net_dev->priv;
2159 return &sis_priv->stats;
2163 * sis900_set_config - Set media type by net_device.set_config
2164 * @dev: the net device for media type change
2165 * @map: ifmap passed by ifconfig
2167 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2168 * we support only port changes. All other runtime configuration
2169 * changes will be ignored
2172 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2174 struct sis900_private *sis_priv = dev->priv;
2175 struct mii_phy *mii_phy = sis_priv->mii;
2179 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2180 /* we switch on the ifmap->port field. I couldn't find anything
2181 * like a definition or standard for the values of that field.
2182 * I think the meaning of those values is device specific. But
2183 * since I would like to change the media type via the ifconfig
2184 * command I use the definition from linux/netdevice.h
2185 * (which seems to be different from the ifport(pcmcia) definition) */
2187 case IF_PORT_UNKNOWN: /* use auto here */
2188 dev->if_port = map->port;
2189 /* we are going to change the media type, so the Link
2190 * will be temporary down and we need to reflect that
2191 * here. When the Link comes up again, it will be
2192 * sensed by the sis_timer procedure, which also does
2193 * all the rest for us */
2194 netif_carrier_off(dev);
2196 /* read current state */
2197 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2199 /* enable auto negotiation and reset the negotioation
2200 * (I don't really know what the auto negatiotiation
2201 * reset really means, but it sounds for me right to
2203 mdio_write(dev, mii_phy->phy_addr,
2204 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2208 case IF_PORT_10BASET: /* 10BaseT */
2209 dev->if_port = map->port;
2211 /* we are going to change the media type, so the Link
2212 * will be temporary down and we need to reflect that
2213 * here. When the Link comes up again, it will be
2214 * sensed by the sis_timer procedure, which also does
2215 * all the rest for us */
2216 netif_carrier_off(dev);
2218 /* set Speed to 10Mbps */
2219 /* read current state */
2220 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2222 /* disable auto negotiation and force 10MBit mode*/
2223 mdio_write(dev, mii_phy->phy_addr,
2224 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2228 case IF_PORT_100BASET: /* 100BaseT */
2229 case IF_PORT_100BASETX: /* 100BaseTx */
2230 dev->if_port = map->port;
2232 /* we are going to change the media type, so the Link
2233 * will be temporary down and we need to reflect that
2234 * here. When the Link comes up again, it will be
2235 * sensed by the sis_timer procedure, which also does
2236 * all the rest for us */
2237 netif_carrier_off(dev);
2239 /* set Speed to 100Mbps */
2240 /* disable auto negotiation and enable 100MBit Mode */
2241 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2242 mdio_write(dev, mii_phy->phy_addr,
2243 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2248 case IF_PORT_10BASE2: /* 10Base2 */
2249 case IF_PORT_AUI: /* AUI */
2250 case IF_PORT_100BASEFX: /* 100BaseFx */
2251 /* These Modes are not supported (are they?)*/
2263 * sis900_mcast_bitnr - compute hashtable index
2264 * @addr: multicast address
2265 * @revision: revision id of chip
2267 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2268 * hash table, which makes this function a little bit different from other drivers
2269 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2270 * multicast hash table.
2273 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2276 u32 crc = ether_crc(6, addr);
2278 /* leave 8 or 7 most siginifant bits */
2279 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2280 return ((int)(crc >> 24));
2282 return ((int)(crc >> 25));
2286 * set_rx_mode - Set SiS900 receive mode
2287 * @net_dev: the net device to be set
2289 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2290 * And set the appropriate multicast filter.
2291 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2294 static void set_rx_mode(struct net_device *net_dev)
2296 long ioaddr = net_dev->base_addr;
2297 struct sis900_private * sis_priv = net_dev->priv;
2298 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2299 int i, table_entries;
2302 /* 635 Hash Table entries = 256(2^16) */
2303 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2304 (sis_priv->chipset_rev == SIS900B_900_REV))
2309 if (net_dev->flags & IFF_PROMISC) {
2310 /* Accept any kinds of packets */
2311 rx_mode = RFPromiscuous;
2312 for (i = 0; i < table_entries; i++)
2313 mc_filter[i] = 0xffff;
2314 } else if ((net_dev->mc_count > multicast_filter_limit) ||
2315 (net_dev->flags & IFF_ALLMULTI)) {
2316 /* too many multicast addresses or accept all multicast packet */
2317 rx_mode = RFAAB | RFAAM;
2318 for (i = 0; i < table_entries; i++)
2319 mc_filter[i] = 0xffff;
2321 /* Accept Broadcast packet, destination address matchs our
2322 * MAC address, use Receive Filter to reject unwanted MCAST
2324 struct dev_mc_list *mclist;
2326 for (i = 0, mclist = net_dev->mc_list;
2327 mclist && i < net_dev->mc_count;
2328 i++, mclist = mclist->next) {
2329 unsigned int bit_nr =
2330 sis900_mcast_bitnr(mclist->dmi_addr, sis_priv->chipset_rev);
2331 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2335 /* update Multicast Hash Table in Receive Filter */
2336 for (i = 0; i < table_entries; i++) {
2337 /* why plus 0x04 ??, That makes the correct value for hash table. */
2338 outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr);
2339 outl(mc_filter[i], ioaddr + rfdr);
2342 outl(RFEN | rx_mode, ioaddr + rfcr);
2344 /* sis900 is capable of looping back packets at MAC level for
2345 * debugging purpose */
2346 if (net_dev->flags & IFF_LOOPBACK) {
2348 /* We must disable Tx/Rx before setting loopback mode */
2349 cr_saved = inl(ioaddr + cr);
2350 outl(cr_saved | TxDIS | RxDIS, ioaddr + cr);
2351 /* enable loopback */
2352 outl(inl(ioaddr + txcfg) | TxMLB, ioaddr + txcfg);
2353 outl(inl(ioaddr + rxcfg) | RxATX, ioaddr + rxcfg);
2355 outl(cr_saved, ioaddr + cr);
2362 * sis900_reset - Reset sis900 MAC
2363 * @net_dev: the net device to reset
2365 * reset sis900 MAC and wait until finished
2366 * reset through command register
2367 * change backoff algorithm for 900B0 & 635 M/B
2370 static void sis900_reset(struct net_device *net_dev)
2372 struct sis900_private * sis_priv = net_dev->priv;
2373 long ioaddr = net_dev->base_addr;
2375 u32 status = TxRCMP | RxRCMP;
2377 outl(0, ioaddr + ier);
2378 outl(0, ioaddr + imr);
2379 outl(0, ioaddr + rfcr);
2381 outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr);
2383 /* Check that the chip has finished the reset. */
2384 while (status && (i++ < 1000)) {
2385 status ^= (inl(isr + ioaddr) & status);
2388 if( (sis_priv->chipset_rev >= SIS635A_900_REV) ||
2389 (sis_priv->chipset_rev == SIS900B_900_REV) )
2390 outl(PESEL | RND_CNT, ioaddr + cfg);
2392 outl(PESEL, ioaddr + cfg);
2396 * sis900_remove - Remove sis900 device
2397 * @pci_dev: the pci device to be removed
2399 * remove and release SiS900 net device
2402 static void __devexit sis900_remove(struct pci_dev *pci_dev)
2404 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2405 struct sis900_private * sis_priv = net_dev->priv;
2406 struct mii_phy *phy = NULL;
2408 while (sis_priv->first_mii) {
2409 phy = sis_priv->first_mii;
2410 sis_priv->first_mii = phy->next;
2414 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2415 sis_priv->rx_ring_dma);
2416 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2417 sis_priv->tx_ring_dma);
2418 unregister_netdev(net_dev);
2419 free_netdev(net_dev);
2420 pci_release_regions(pci_dev);
2421 pci_set_drvdata(pci_dev, NULL);
2426 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2428 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2429 long ioaddr = net_dev->base_addr;
2431 if(!netif_running(net_dev))
2434 netif_stop_queue(net_dev);
2435 netif_device_detach(net_dev);
2437 /* Stop the chip's Tx and Rx Status Machine */
2438 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
2440 pci_set_power_state(pci_dev, PCI_D3hot);
2441 pci_save_state(pci_dev);
2446 static int sis900_resume(struct pci_dev *pci_dev)
2448 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2449 struct sis900_private *sis_priv = net_dev->priv;
2450 long ioaddr = net_dev->base_addr;
2452 if(!netif_running(net_dev))
2454 pci_restore_state(pci_dev);
2455 pci_set_power_state(pci_dev, PCI_D0);
2457 sis900_init_rxfilter(net_dev);
2459 sis900_init_tx_ring(net_dev);
2460 sis900_init_rx_ring(net_dev);
2462 set_rx_mode(net_dev);
2464 netif_device_attach(net_dev);
2465 netif_start_queue(net_dev);
2467 /* Workaround for EDB */
2468 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2470 /* Enable all known interrupts by setting the interrupt mask. */
2471 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
2472 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
2473 outl(IE, ioaddr + ier);
2475 sis900_check_mode(net_dev, sis_priv->mii);
2479 #endif /* CONFIG_PM */
2481 static struct pci_driver sis900_pci_driver = {
2482 .name = SIS900_MODULE_NAME,
2483 .id_table = sis900_pci_tbl,
2484 .probe = sis900_probe,
2485 .remove = __devexit_p(sis900_remove),
2487 .suspend = sis900_suspend,
2488 .resume = sis900_resume,
2489 #endif /* CONFIG_PM */
2492 static int __init sis900_init_module(void)
2494 /* when a module, this is printed whether or not devices are found in probe */
2499 return pci_register_driver(&sis900_pci_driver);
2502 static void __exit sis900_cleanup_module(void)
2504 pci_unregister_driver(&sis900_pci_driver);
2507 module_init(sis900_init_module);
2508 module_exit(sis900_cleanup_module);