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 equalizer 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/sched.h>
56 #include <linux/string.h>
57 #include <linux/timer.h>
58 #include <linux/errno.h>
59 #include <linux/ioport.h>
60 #include <linux/slab.h>
61 #include <linux/interrupt.h>
62 #include <linux/pci.h>
63 #include <linux/netdevice.h>
64 #include <linux/init.h>
65 #include <linux/mii.h>
66 #include <linux/etherdevice.h>
67 #include <linux/skbuff.h>
68 #include <linux/delay.h>
69 #include <linux/ethtool.h>
70 #include <linux/crc32.h>
71 #include <linux/bitops.h>
72 #include <linux/dma-mapping.h>
74 #include <asm/processor.h> /* Processor type for cache alignment. */
77 #include <asm/uaccess.h> /* User space memory access functions */
81 #define SIS900_MODULE_NAME "sis900"
82 #define SIS900_DRV_VERSION "v1.08.10 Apr. 2 2006"
84 static const char version[] =
85 KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
87 static int max_interrupt_work = 40;
88 static int multicast_filter_limit = 128;
90 static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
92 #define SIS900_DEF_MSG \
98 /* Time in jiffies before concluding the transmitter is hung. */
99 #define TX_TIMEOUT (4*HZ)
105 static const char * card_names[] = {
106 "SiS 900 PCI Fast Ethernet",
107 "SiS 7016 PCI Fast Ethernet"
109 static DEFINE_PCI_DEVICE_TABLE(sis900_pci_tbl) = {
110 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900,
111 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900},
112 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016,
113 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016},
116 MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
118 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
120 static const struct mii_chip_info {
129 } mii_chip_table[] = {
130 { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
131 { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
132 { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
133 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
134 { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
135 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
136 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
137 { "ICS LAN PHY", 0x0015, 0xF440, LAN },
138 { "ICS LAN PHY", 0x0143, 0xBC70, LAN },
139 { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
140 { "NS 83847 PHY", 0x2000, 0x5C30, MIX },
141 { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
142 { "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
147 struct mii_phy * next;
155 typedef struct _BufferDesc {
161 struct sis900_private {
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 void __iomem *ioaddr;
173 struct timer_list timer; /* Link status detection timer. */
174 u8 autong_complete; /* 1: auto-negotiate complete */
178 unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
179 unsigned int cur_tx, dirty_tx;
181 /* The saved address of a sent/receive-in-place packet buffer */
182 struct sk_buff *tx_skbuff[NUM_TX_DESC];
183 struct sk_buff *rx_skbuff[NUM_RX_DESC];
187 dma_addr_t tx_ring_dma;
188 dma_addr_t rx_ring_dma;
190 unsigned int tx_full; /* The Tx queue is full. */
195 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
196 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
197 MODULE_LICENSE("GPL");
199 module_param(multicast_filter_limit, int, 0444);
200 module_param(max_interrupt_work, int, 0444);
201 module_param(sis900_debug, int, 0444);
202 MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
203 MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
204 MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
206 #define sw32(reg, val) iowrite32(val, ioaddr + (reg))
207 #define sw8(reg, val) iowrite8(val, ioaddr + (reg))
208 #define sr32(reg) ioread32(ioaddr + (reg))
209 #define sr16(reg) ioread16(ioaddr + (reg))
211 #ifdef CONFIG_NET_POLL_CONTROLLER
212 static void sis900_poll(struct net_device *dev);
214 static int sis900_open(struct net_device *net_dev);
215 static int sis900_mii_probe (struct net_device * net_dev);
216 static void sis900_init_rxfilter (struct net_device * net_dev);
217 static u16 read_eeprom(void __iomem *ioaddr, int location);
218 static int mdio_read(struct net_device *net_dev, int phy_id, int location);
219 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
220 static void sis900_timer(unsigned long data);
221 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
222 static void sis900_tx_timeout(struct net_device *net_dev);
223 static void sis900_init_tx_ring(struct net_device *net_dev);
224 static void sis900_init_rx_ring(struct net_device *net_dev);
225 static netdev_tx_t sis900_start_xmit(struct sk_buff *skb,
226 struct net_device *net_dev);
227 static int sis900_rx(struct net_device *net_dev);
228 static void sis900_finish_xmit (struct net_device *net_dev);
229 static irqreturn_t sis900_interrupt(int irq, void *dev_instance);
230 static int sis900_close(struct net_device *net_dev);
231 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
232 static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
233 static void set_rx_mode(struct net_device *net_dev);
234 static void sis900_reset(struct net_device *net_dev);
235 static void sis630_set_eq(struct net_device *net_dev, u8 revision);
236 static int sis900_set_config(struct net_device *dev, struct ifmap *map);
237 static u16 sis900_default_phy(struct net_device * net_dev);
238 static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
239 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
240 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
241 static void sis900_set_mode(struct sis900_private *, int speed, int duplex);
242 static const struct ethtool_ops sis900_ethtool_ops;
245 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
246 * @pci_dev: the sis900 pci device
247 * @net_dev: the net device to get address for
249 * Older SiS900 and friends, use EEPROM to store MAC address.
250 * MAC address is read from read_eeprom() into @net_dev->dev_addr.
253 static int sis900_get_mac_addr(struct pci_dev *pci_dev,
254 struct net_device *net_dev)
256 struct sis900_private *sis_priv = netdev_priv(net_dev);
257 void __iomem *ioaddr = sis_priv->ioaddr;
261 /* check to see if we have sane EEPROM */
262 signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
263 if (signature == 0xffff || signature == 0x0000) {
264 printk (KERN_WARNING "%s: Error EERPOM read %x\n",
265 pci_name(pci_dev), signature);
269 /* get MAC address from EEPROM */
270 for (i = 0; i < 3; i++)
271 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
277 * sis630e_get_mac_addr - Get MAC address for SiS630E model
278 * @pci_dev: the sis900 pci device
279 * @net_dev: the net device to get address for
281 * SiS630E model, use APC CMOS RAM to store MAC address.
282 * APC CMOS RAM is accessed through ISA bridge.
283 * MAC address is read into @net_dev->dev_addr.
286 static int sis630e_get_mac_addr(struct pci_dev *pci_dev,
287 struct net_device *net_dev)
289 struct pci_dev *isa_bridge = NULL;
293 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
295 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
297 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
301 pci_read_config_byte(isa_bridge, 0x48, ®);
302 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
304 for (i = 0; i < 6; i++) {
305 outb(0x09 + i, 0x70);
306 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
309 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
310 pci_dev_put(isa_bridge);
317 * sis635_get_mac_addr - Get MAC address for SIS635 model
318 * @pci_dev: the sis900 pci device
319 * @net_dev: the net device to get address for
321 * SiS635 model, set MAC Reload Bit to load Mac address from APC
322 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
323 * @net_dev->dev_addr.
326 static int sis635_get_mac_addr(struct pci_dev *pci_dev,
327 struct net_device *net_dev)
329 struct sis900_private *sis_priv = netdev_priv(net_dev);
330 void __iomem *ioaddr = sis_priv->ioaddr;
334 rfcrSave = sr32(rfcr);
336 sw32(cr, rfcrSave | RELOAD);
339 /* disable packet filtering before setting filter */
340 sw32(rfcr, rfcrSave & ~RFEN);
342 /* load MAC addr to filter data register */
343 for (i = 0 ; i < 3 ; i++) {
344 sw32(rfcr, (i << RFADDR_shift));
345 *( ((u16 *)net_dev->dev_addr) + i) = sr16(rfdr);
348 /* enable packet filtering */
349 sw32(rfcr, rfcrSave | RFEN);
355 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
356 * @pci_dev: the sis900 pci device
357 * @net_dev: the net device to get address for
359 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
361 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
362 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
363 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
364 * EEDONE signal to refuse EEPROM access by LAN.
365 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
366 * The signature field in SiS962 or SiS963 spec is meaningless.
367 * MAC address is read into @net_dev->dev_addr.
370 static int sis96x_get_mac_addr(struct pci_dev *pci_dev,
371 struct net_device *net_dev)
373 struct sis900_private *sis_priv = netdev_priv(net_dev);
374 void __iomem *ioaddr = sis_priv->ioaddr;
378 for (wait = 0; wait < 2000; wait++) {
379 if (sr32(mear) & EEGNT) {
380 u16 *mac = (u16 *)net_dev->dev_addr;
383 /* get MAC address from EEPROM */
384 for (i = 0; i < 3; i++)
385 mac[i] = read_eeprom(ioaddr, i + EEPROMMACAddr);
396 static const struct net_device_ops sis900_netdev_ops = {
397 .ndo_open = sis900_open,
398 .ndo_stop = sis900_close,
399 .ndo_start_xmit = sis900_start_xmit,
400 .ndo_set_config = sis900_set_config,
401 .ndo_set_rx_mode = set_rx_mode,
402 .ndo_change_mtu = eth_change_mtu,
403 .ndo_validate_addr = eth_validate_addr,
404 .ndo_set_mac_address = eth_mac_addr,
405 .ndo_do_ioctl = mii_ioctl,
406 .ndo_tx_timeout = sis900_tx_timeout,
407 #ifdef CONFIG_NET_POLL_CONTROLLER
408 .ndo_poll_controller = sis900_poll,
413 * sis900_probe - Probe for sis900 device
414 * @pci_dev: the sis900 pci device
415 * @pci_id: the pci device ID
417 * Check and probe sis900 net device for @pci_dev.
418 * Get mac address according to the chip revision,
419 * and assign SiS900-specific entries in the device structure.
420 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
423 static int sis900_probe(struct pci_dev *pci_dev,
424 const struct pci_device_id *pci_id)
426 struct sis900_private *sis_priv;
427 struct net_device *net_dev;
431 void __iomem *ioaddr;
433 const char *card_name = card_names[pci_id->driver_data];
434 const char *dev_name = pci_name(pci_dev);
436 /* when built into the kernel, we only print version if device is found */
438 static int printed_version;
439 if (!printed_version++)
443 /* setup various bits in PCI command register */
444 ret = pci_enable_device(pci_dev);
447 i = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
449 printk(KERN_ERR "sis900.c: architecture does not support "
450 "32bit PCI busmaster DMA\n");
454 pci_set_master(pci_dev);
456 net_dev = alloc_etherdev(sizeof(struct sis900_private));
459 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
461 /* We do a request_region() to register /proc/ioports info. */
462 ret = pci_request_regions(pci_dev, "sis900");
467 ioaddr = pci_iomap(pci_dev, 0, 0);
470 goto err_out_cleardev;
473 sis_priv = netdev_priv(net_dev);
474 sis_priv->ioaddr = ioaddr;
475 sis_priv->pci_dev = pci_dev;
476 spin_lock_init(&sis_priv->lock);
478 pci_set_drvdata(pci_dev, net_dev);
480 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
485 sis_priv->tx_ring = ring_space;
486 sis_priv->tx_ring_dma = ring_dma;
488 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
493 sis_priv->rx_ring = ring_space;
494 sis_priv->rx_ring_dma = ring_dma;
496 /* The SiS900-specific entries in the device structure. */
497 net_dev->netdev_ops = &sis900_netdev_ops;
498 net_dev->watchdog_timeo = TX_TIMEOUT;
499 net_dev->ethtool_ops = &sis900_ethtool_ops;
501 if (sis900_debug > 0)
502 sis_priv->msg_enable = sis900_debug;
504 sis_priv->msg_enable = SIS900_DEF_MSG;
506 sis_priv->mii_info.dev = net_dev;
507 sis_priv->mii_info.mdio_read = mdio_read;
508 sis_priv->mii_info.mdio_write = mdio_write;
509 sis_priv->mii_info.phy_id_mask = 0x1f;
510 sis_priv->mii_info.reg_num_mask = 0x1f;
512 /* Get Mac address according to the chip revision */
513 sis_priv->chipset_rev = pci_dev->revision;
514 if(netif_msg_probe(sis_priv))
515 printk(KERN_DEBUG "%s: detected revision %2.2x, "
516 "trying to get MAC address...\n",
517 dev_name, sis_priv->chipset_rev);
520 if (sis_priv->chipset_rev == SIS630E_900_REV)
521 ret = sis630e_get_mac_addr(pci_dev, net_dev);
522 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
523 ret = sis635_get_mac_addr(pci_dev, net_dev);
524 else if (sis_priv->chipset_rev == SIS96x_900_REV)
525 ret = sis96x_get_mac_addr(pci_dev, net_dev);
527 ret = sis900_get_mac_addr(pci_dev, net_dev);
529 if (!ret || !is_valid_ether_addr(net_dev->dev_addr)) {
530 eth_hw_addr_random(net_dev);
531 printk(KERN_WARNING "%s: Unreadable or invalid MAC address,"
532 "using random generated one\n", dev_name);
535 /* 630ET : set the mii access mode as software-mode */
536 if (sis_priv->chipset_rev == SIS630ET_900_REV)
537 sw32(cr, ACCESSMODE | sr32(cr));
539 /* probe for mii transceiver */
540 if (sis900_mii_probe(net_dev) == 0) {
541 printk(KERN_WARNING "%s: Error probing MII device.\n",
547 /* save our host bridge revision */
548 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
550 sis_priv->host_bridge_rev = dev->revision;
554 ret = register_netdev(net_dev);
558 /* print some information about our NIC */
559 printk(KERN_INFO "%s: %s at 0x%p, IRQ %d, %pM\n",
560 net_dev->name, card_name, ioaddr, pci_dev->irq,
563 /* Detect Wake on Lan support */
564 ret = (sr32(CFGPMC) & PMESP) >> 27;
565 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
566 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
571 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
572 sis_priv->rx_ring_dma);
574 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
575 sis_priv->tx_ring_dma);
577 pci_iounmap(pci_dev, ioaddr);
579 pci_set_drvdata(pci_dev, NULL);
580 pci_release_regions(pci_dev);
582 free_netdev(net_dev);
587 * sis900_mii_probe - Probe MII PHY for sis900
588 * @net_dev: the net device to probe for
590 * Search for total of 32 possible mii phy addresses.
591 * Identify and set current phy if found one,
592 * return error if it failed to found.
595 static int sis900_mii_probe(struct net_device *net_dev)
597 struct sis900_private *sis_priv = netdev_priv(net_dev);
598 const char *dev_name = pci_name(sis_priv->pci_dev);
599 u16 poll_bit = MII_STAT_LINK, status = 0;
600 unsigned long timeout = jiffies + 5 * HZ;
603 sis_priv->mii = NULL;
605 /* search for total of 32 possible mii phy addresses */
606 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
607 struct mii_phy * mii_phy = NULL;
612 for(i = 0; i < 2; i++)
613 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
615 if (mii_status == 0xffff || mii_status == 0x0000) {
616 if (netif_msg_probe(sis_priv))
617 printk(KERN_DEBUG "%s: MII at address %d"
623 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
624 mii_phy = sis_priv->first_mii;
628 mii_phy = mii_phy->next;
634 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
635 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
636 mii_phy->phy_addr = phy_addr;
637 mii_phy->status = mii_status;
638 mii_phy->next = sis_priv->mii;
639 sis_priv->mii = mii_phy;
640 sis_priv->first_mii = mii_phy;
642 for (i = 0; mii_chip_table[i].phy_id1; i++)
643 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
644 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
645 mii_phy->phy_types = mii_chip_table[i].phy_types;
646 if (mii_chip_table[i].phy_types == MIX)
648 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
649 printk(KERN_INFO "%s: %s transceiver found "
652 mii_chip_table[i].name,
657 if( !mii_chip_table[i].phy_id1 ) {
658 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
660 mii_phy->phy_types = UNKNOWN;
664 if (sis_priv->mii == NULL) {
665 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
669 /* select default PHY for mac */
670 sis_priv->mii = NULL;
671 sis900_default_phy( net_dev );
673 /* Reset phy if default phy is internal sis900 */
674 if ((sis_priv->mii->phy_id0 == 0x001D) &&
675 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
676 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
678 /* workaround for ICS1893 PHY */
679 if ((sis_priv->mii->phy_id0 == 0x0015) &&
680 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
681 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
683 if(status & MII_STAT_LINK){
687 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
688 if (time_after_eq(jiffies, timeout)) {
689 printk(KERN_WARNING "%s: reset phy and link down now\n",
696 if (sis_priv->chipset_rev == SIS630E_900_REV) {
697 /* SiS 630E has some bugs on default value of PHY registers */
698 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
699 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
700 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
701 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
702 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
705 if (sis_priv->mii->status & MII_STAT_LINK)
706 netif_carrier_on(net_dev);
708 netif_carrier_off(net_dev);
714 * sis900_default_phy - Select default PHY for sis900 mac.
715 * @net_dev: the net device to probe for
717 * Select first detected PHY with link as default.
718 * If no one is link on, select PHY whose types is HOME as default.
719 * If HOME doesn't exist, select LAN.
722 static u16 sis900_default_phy(struct net_device * net_dev)
724 struct sis900_private *sis_priv = netdev_priv(net_dev);
725 struct mii_phy *phy = NULL, *phy_home = NULL,
726 *default_phy = NULL, *phy_lan = NULL;
729 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
730 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
731 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
733 /* Link ON & Not select default PHY & not ghost PHY */
734 if ((status & MII_STAT_LINK) && !default_phy &&
735 (phy->phy_types != UNKNOWN))
738 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
739 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
740 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
741 if (phy->phy_types == HOME)
743 else if(phy->phy_types == LAN)
748 if (!default_phy && phy_home)
749 default_phy = phy_home;
750 else if (!default_phy && phy_lan)
751 default_phy = phy_lan;
752 else if (!default_phy)
753 default_phy = sis_priv->first_mii;
755 if (sis_priv->mii != default_phy) {
756 sis_priv->mii = default_phy;
757 sis_priv->cur_phy = default_phy->phy_addr;
758 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
759 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
762 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
764 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
765 status &= (~MII_CNTL_ISOLATE);
767 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
768 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
769 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
776 * sis900_set_capability - set the media capability of network adapter.
777 * @net_dev : the net device to probe for
780 * Set the media capability of network adapter according to
781 * mii status register. It's necessary before auto-negotiate.
784 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
789 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
790 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
792 cap = MII_NWAY_CSMA_CD |
793 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
794 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
795 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
796 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
798 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
802 /* Delay between EEPROM clock transitions. */
803 #define eeprom_delay() sr32(mear)
806 * read_eeprom - Read Serial EEPROM
807 * @ioaddr: base i/o address
808 * @location: the EEPROM location to read
810 * Read Serial EEPROM through EEPROM Access Register.
811 * Note that location is in word (16 bits) unit
814 static u16 read_eeprom(void __iomem *ioaddr, int location)
816 u32 read_cmd = location | EEread;
825 /* Shift the read command (9) bits out. */
826 for (i = 8; i >= 0; i--) {
827 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
831 sw32(mear, dataval | EECLK);
837 /* read the 16-bits data in */
838 for (i = 16; i > 0; i--) {
841 sw32(mear, EECS | EECLK);
843 retval = (retval << 1) | ((sr32(mear) & EEDO) ? 1 : 0);
847 /* Terminate the EEPROM access. */
854 /* Read and write the MII management registers using software-generated
855 serial MDIO protocol. Note that the command bits and data bits are
856 send out separately */
857 #define mdio_delay() sr32(mear)
859 static void mdio_idle(struct sis900_private *sp)
861 void __iomem *ioaddr = sp->ioaddr;
863 sw32(mear, MDIO | MDDIR);
865 sw32(mear, MDIO | MDDIR | MDC);
868 /* Synchronize the MII management interface by shifting 32 one bits out. */
869 static void mdio_reset(struct sis900_private *sp)
871 void __iomem *ioaddr = sp->ioaddr;
874 for (i = 31; i >= 0; i--) {
875 sw32(mear, MDDIR | MDIO);
877 sw32(mear, MDDIR | MDIO | MDC);
883 * mdio_read - read MII PHY register
884 * @net_dev: the net device to read
885 * @phy_id: the phy address to read
886 * @location: the phy regiester id to read
888 * Read MII registers through MDIO and MDC
889 * using MDIO management frame structure and protocol(defined by ISO/IEC).
890 * Please see SiS7014 or ICS spec
893 static int mdio_read(struct net_device *net_dev, int phy_id, int location)
895 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
896 struct sis900_private *sp = netdev_priv(net_dev);
897 void __iomem *ioaddr = sp->ioaddr;
904 for (i = 15; i >= 0; i--) {
905 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
909 sw32(mear, dataval | MDC);
913 /* Read the 16 data bits. */
914 for (i = 16; i > 0; i--) {
917 retval = (retval << 1) | ((sr32(mear) & MDIO) ? 1 : 0);
927 * mdio_write - write MII PHY register
928 * @net_dev: the net device to write
929 * @phy_id: the phy address to write
930 * @location: the phy regiester id to write
931 * @value: the register value to write with
933 * Write MII registers with @value through MDIO and MDC
934 * using MDIO management frame structure and protocol(defined by ISO/IEC)
935 * please see SiS7014 or ICS spec
938 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
941 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
942 struct sis900_private *sp = netdev_priv(net_dev);
943 void __iomem *ioaddr = sp->ioaddr;
949 /* Shift the command bits out. */
950 for (i = 15; i >= 0; i--) {
951 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
955 sw8(mear, dataval | MDC);
960 /* Shift the value bits out. */
961 for (i = 15; i >= 0; i--) {
962 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
966 sw32(mear, dataval | MDC);
971 /* Clear out extra bits. */
972 for (i = 2; i > 0; i--) {
983 * sis900_reset_phy - reset sis900 mii phy.
984 * @net_dev: the net device to write
985 * @phy_addr: default phy address
987 * Some specific phy can't work properly without reset.
988 * This function will be called during initialization and
989 * link status change from ON to DOWN.
992 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
997 for (i = 0; i < 2; i++)
998 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1000 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
1005 #ifdef CONFIG_NET_POLL_CONTROLLER
1007 * Polling 'interrupt' - used by things like netconsole to send skbs
1008 * without having to re-enable interrupts. It's not called while
1009 * the interrupt routine is executing.
1011 static void sis900_poll(struct net_device *dev)
1013 struct sis900_private *sp = netdev_priv(dev);
1014 const int irq = sp->pci_dev->irq;
1017 sis900_interrupt(irq, dev);
1023 * sis900_open - open sis900 device
1024 * @net_dev: the net device to open
1026 * Do some initialization and start net interface.
1027 * enable interrupts and set sis900 timer.
1031 sis900_open(struct net_device *net_dev)
1033 struct sis900_private *sis_priv = netdev_priv(net_dev);
1034 void __iomem *ioaddr = sis_priv->ioaddr;
1037 /* Soft reset the chip. */
1038 sis900_reset(net_dev);
1040 /* Equalizer workaround Rule */
1041 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1043 ret = request_irq(sis_priv->pci_dev->irq, sis900_interrupt, IRQF_SHARED,
1044 net_dev->name, net_dev);
1048 sis900_init_rxfilter(net_dev);
1050 sis900_init_tx_ring(net_dev);
1051 sis900_init_rx_ring(net_dev);
1053 set_rx_mode(net_dev);
1055 netif_start_queue(net_dev);
1057 /* Workaround for EDB */
1058 sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1060 /* Enable all known interrupts by setting the interrupt mask. */
1061 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE);
1062 sw32(cr, RxENA | sr32(cr));
1065 sis900_check_mode(net_dev, sis_priv->mii);
1067 /* Set the timer to switch to check for link beat and perhaps switch
1068 to an alternate media type. */
1069 init_timer(&sis_priv->timer);
1070 sis_priv->timer.expires = jiffies + HZ;
1071 sis_priv->timer.data = (unsigned long)net_dev;
1072 sis_priv->timer.function = sis900_timer;
1073 add_timer(&sis_priv->timer);
1079 * sis900_init_rxfilter - Initialize the Rx filter
1080 * @net_dev: the net device to initialize for
1082 * Set receive filter address to our MAC address
1083 * and enable packet filtering.
1087 sis900_init_rxfilter (struct net_device * net_dev)
1089 struct sis900_private *sis_priv = netdev_priv(net_dev);
1090 void __iomem *ioaddr = sis_priv->ioaddr;
1094 rfcrSave = sr32(rfcr);
1096 /* disable packet filtering before setting filter */
1097 sw32(rfcr, rfcrSave & ~RFEN);
1099 /* load MAC addr to filter data register */
1100 for (i = 0 ; i < 3 ; i++) {
1101 u32 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1103 sw32(rfcr, i << RFADDR_shift);
1106 if (netif_msg_hw(sis_priv)) {
1107 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1108 net_dev->name, i, sr32(rfdr));
1112 /* enable packet filtering */
1113 sw32(rfcr, rfcrSave | RFEN);
1117 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1118 * @net_dev: the net device to initialize for
1120 * Initialize the Tx descriptor ring,
1124 sis900_init_tx_ring(struct net_device *net_dev)
1126 struct sis900_private *sis_priv = netdev_priv(net_dev);
1127 void __iomem *ioaddr = sis_priv->ioaddr;
1130 sis_priv->tx_full = 0;
1131 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1133 for (i = 0; i < NUM_TX_DESC; i++) {
1134 sis_priv->tx_skbuff[i] = NULL;
1136 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1137 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1138 sis_priv->tx_ring[i].cmdsts = 0;
1139 sis_priv->tx_ring[i].bufptr = 0;
1142 /* load Transmit Descriptor Register */
1143 sw32(txdp, sis_priv->tx_ring_dma);
1144 if (netif_msg_hw(sis_priv))
1145 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1146 net_dev->name, sr32(txdp));
1150 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1151 * @net_dev: the net device to initialize for
1153 * Initialize the Rx descriptor ring,
1154 * and pre-allocate recevie buffers (socket buffer)
1158 sis900_init_rx_ring(struct net_device *net_dev)
1160 struct sis900_private *sis_priv = netdev_priv(net_dev);
1161 void __iomem *ioaddr = sis_priv->ioaddr;
1164 sis_priv->cur_rx = 0;
1165 sis_priv->dirty_rx = 0;
1167 /* init RX descriptor */
1168 for (i = 0; i < NUM_RX_DESC; i++) {
1169 sis_priv->rx_skbuff[i] = NULL;
1171 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1172 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1173 sis_priv->rx_ring[i].cmdsts = 0;
1174 sis_priv->rx_ring[i].bufptr = 0;
1177 /* allocate sock buffers */
1178 for (i = 0; i < NUM_RX_DESC; i++) {
1179 struct sk_buff *skb;
1181 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1182 /* not enough memory for skbuff, this makes a "hole"
1183 on the buffer ring, it is not clear how the
1184 hardware will react to this kind of degenerated
1188 sis_priv->rx_skbuff[i] = skb;
1189 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1190 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
1191 skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1193 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1195 /* load Receive Descriptor Register */
1196 sw32(rxdp, sis_priv->rx_ring_dma);
1197 if (netif_msg_hw(sis_priv))
1198 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1199 net_dev->name, sr32(rxdp));
1203 * sis630_set_eq - set phy equalizer value for 630 LAN
1204 * @net_dev: the net device to set equalizer value
1205 * @revision: 630 LAN revision number
1207 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1208 * PHY register 14h(Test)
1209 * Bit 14: 0 -- Automatically detect (default)
1210 * 1 -- Manually set Equalizer filter
1211 * Bit 13: 0 -- (Default)
1212 * 1 -- Speed up convergence of equalizer setting
1213 * Bit 9 : 0 -- (Default)
1214 * 1 -- Disable Baseline Wander
1215 * Bit 3~7 -- Equalizer filter setting
1216 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1217 * Then calculate equalizer value
1218 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1219 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1220 * Calculate Equalizer value:
1221 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-detect proper equalizer value.
1222 * When the equalizer is stable, this value is not a fixed value. It will be within
1223 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1224 * 0 <= max <= 4 --> set equalizer to max
1225 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1226 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1229 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1231 struct sis900_private *sis_priv = netdev_priv(net_dev);
1232 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1235 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1236 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1239 if (netif_carrier_ok(net_dev)) {
1240 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1241 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1242 (0x2200 | reg14h) & 0xBFFF);
1243 for (i=0; i < maxcount; i++) {
1244 eq_value = (0x00F8 & mdio_read(net_dev,
1245 sis_priv->cur_phy, MII_RESV)) >> 3;
1247 max_value=min_value=eq_value;
1248 max_value = (eq_value > max_value) ?
1249 eq_value : max_value;
1250 min_value = (eq_value < min_value) ?
1251 eq_value : min_value;
1253 /* 630E rule to determine the equalizer value */
1254 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1255 revision == SIS630ET_900_REV) {
1257 eq_value = max_value;
1258 else if (max_value >= 5 && max_value < 15)
1259 eq_value = (max_value == min_value) ?
1260 max_value+2 : max_value+1;
1261 else if (max_value >= 15)
1262 eq_value=(max_value == min_value) ?
1263 max_value+6 : max_value+5;
1265 /* 630B0&B1 rule to determine the equalizer value */
1266 if (revision == SIS630A_900_REV &&
1267 (sis_priv->host_bridge_rev == SIS630B0 ||
1268 sis_priv->host_bridge_rev == SIS630B1)) {
1272 eq_value = (max_value + min_value + 1)/2;
1274 /* write equalizer value and setting */
1275 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1276 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1277 reg14h = (reg14h | 0x6000) & 0xFDFF;
1278 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1280 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1281 if (revision == SIS630A_900_REV &&
1282 (sis_priv->host_bridge_rev == SIS630B0 ||
1283 sis_priv->host_bridge_rev == SIS630B1))
1284 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1285 (reg14h | 0x2200) & 0xBFFF);
1287 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1288 (reg14h | 0x2000) & 0xBFFF);
1293 * sis900_timer - sis900 timer routine
1294 * @data: pointer to sis900 net device
1296 * On each timer ticks we check two things,
1297 * link status (ON/OFF) and link mode (10/100/Full/Half)
1300 static void sis900_timer(unsigned long data)
1302 struct net_device *net_dev = (struct net_device *)data;
1303 struct sis900_private *sis_priv = netdev_priv(net_dev);
1304 struct mii_phy *mii_phy = sis_priv->mii;
1305 static const int next_tick = 5*HZ;
1308 if (!sis_priv->autong_complete){
1309 int uninitialized_var(speed), duplex = 0;
1311 sis900_read_mode(net_dev, &speed, &duplex);
1313 sis900_set_mode(sis_priv, speed, duplex);
1314 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1315 netif_start_queue(net_dev);
1318 sis_priv->timer.expires = jiffies + HZ;
1319 add_timer(&sis_priv->timer);
1323 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1324 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1326 /* Link OFF -> ON */
1327 if (!netif_carrier_ok(net_dev)) {
1329 /* Search for new PHY */
1330 status = sis900_default_phy(net_dev);
1331 mii_phy = sis_priv->mii;
1333 if (status & MII_STAT_LINK){
1334 sis900_check_mode(net_dev, mii_phy);
1335 netif_carrier_on(net_dev);
1338 /* Link ON -> OFF */
1339 if (!(status & MII_STAT_LINK)){
1340 netif_carrier_off(net_dev);
1341 if(netif_msg_link(sis_priv))
1342 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1344 /* Change mode issue */
1345 if ((mii_phy->phy_id0 == 0x001D) &&
1346 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1347 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1349 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1355 sis_priv->timer.expires = jiffies + next_tick;
1356 add_timer(&sis_priv->timer);
1360 * sis900_check_mode - check the media mode for sis900
1361 * @net_dev: the net device to be checked
1362 * @mii_phy: the mii phy
1364 * Older driver gets the media mode from mii status output
1365 * register. Now we set our media capability and auto-negotiate
1366 * to get the upper bound of speed and duplex between two ends.
1367 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1368 * and autong_complete should be set to 1.
1371 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1373 struct sis900_private *sis_priv = netdev_priv(net_dev);
1374 void __iomem *ioaddr = sis_priv->ioaddr;
1377 if (mii_phy->phy_types == LAN) {
1378 sw32(cfg, ~EXD & sr32(cfg));
1379 sis900_set_capability(net_dev , mii_phy);
1380 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1382 sw32(cfg, EXD | sr32(cfg));
1383 speed = HW_SPEED_HOME;
1384 duplex = FDX_CAPABLE_HALF_SELECTED;
1385 sis900_set_mode(sis_priv, speed, duplex);
1386 sis_priv->autong_complete = 1;
1391 * sis900_set_mode - Set the media mode of mac register.
1392 * @sp: the device private data
1393 * @speed : the transmit speed to be determined
1394 * @duplex: the duplex mode to be determined
1396 * Set the media mode of mac register txcfg/rxcfg according to
1397 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1398 * bus is used instead of PCI bus. When this bit is set 1, the
1399 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1403 static void sis900_set_mode(struct sis900_private *sp, int speed, int duplex)
1405 void __iomem *ioaddr = sp->ioaddr;
1406 u32 tx_flags = 0, rx_flags = 0;
1408 if (sr32( cfg) & EDB_MASTER_EN) {
1409 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1410 (TX_FILL_THRESH << TxFILLT_shift);
1411 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1413 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1414 (TX_FILL_THRESH << TxFILLT_shift);
1415 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1418 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1419 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1420 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1422 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1423 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1426 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1427 tx_flags |= (TxCSI | TxHBI);
1431 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1432 /* Can accept Jumbo packet */
1436 sw32(txcfg, tx_flags);
1437 sw32(rxcfg, rx_flags);
1441 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1442 * @net_dev: the net device to read mode for
1443 * @phy_addr: mii phy address
1445 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1446 * autong_complete should be set to 0 when starting auto-negotiation.
1447 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1448 * sis900_timer will wait for link on again if autong_complete = 0.
1451 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1453 struct sis900_private *sis_priv = netdev_priv(net_dev);
1457 for (i = 0; i < 2; i++)
1458 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1460 if (!(status & MII_STAT_LINK)){
1461 if(netif_msg_link(sis_priv))
1462 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1463 sis_priv->autong_complete = 1;
1464 netif_carrier_off(net_dev);
1468 /* (Re)start AutoNegotiate */
1469 mdio_write(net_dev, phy_addr, MII_CONTROL,
1470 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1471 sis_priv->autong_complete = 0;
1476 * sis900_read_mode - read media mode for sis900 internal phy
1477 * @net_dev: the net device to read mode for
1478 * @speed : the transmit speed to be determined
1479 * @duplex : the duplex mode to be determined
1481 * The capability of remote end will be put in mii register autorec
1482 * after auto-negotiation. Use AND operation to get the upper bound
1483 * of speed and duplex between two ends.
1486 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1488 struct sis900_private *sis_priv = netdev_priv(net_dev);
1489 struct mii_phy *phy = sis_priv->mii;
1490 int phy_addr = sis_priv->cur_phy;
1492 u16 autoadv, autorec;
1495 for (i = 0; i < 2; i++)
1496 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1498 if (!(status & MII_STAT_LINK))
1501 /* AutoNegotiate completed */
1502 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1503 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1504 status = autoadv & autorec;
1506 *speed = HW_SPEED_10_MBPS;
1507 *duplex = FDX_CAPABLE_HALF_SELECTED;
1509 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1510 *speed = HW_SPEED_100_MBPS;
1511 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1512 *duplex = FDX_CAPABLE_FULL_SELECTED;
1514 sis_priv->autong_complete = 1;
1516 /* Workaround for Realtek RTL8201 PHY issue */
1517 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1518 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1519 *duplex = FDX_CAPABLE_FULL_SELECTED;
1520 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1521 *speed = HW_SPEED_100_MBPS;
1524 if(netif_msg_link(sis_priv))
1525 printk(KERN_INFO "%s: Media Link On %s %s-duplex\n",
1527 *speed == HW_SPEED_100_MBPS ?
1528 "100mbps" : "10mbps",
1529 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1534 * sis900_tx_timeout - sis900 transmit timeout routine
1535 * @net_dev: the net device to transmit
1537 * print transmit timeout status
1538 * disable interrupts and do some tasks
1541 static void sis900_tx_timeout(struct net_device *net_dev)
1543 struct sis900_private *sis_priv = netdev_priv(net_dev);
1544 void __iomem *ioaddr = sis_priv->ioaddr;
1545 unsigned long flags;
1548 if (netif_msg_tx_err(sis_priv)) {
1549 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x\n",
1550 net_dev->name, sr32(cr), sr32(isr));
1553 /* Disable interrupts by clearing the interrupt mask. */
1556 /* use spinlock to prevent interrupt handler accessing buffer ring */
1557 spin_lock_irqsave(&sis_priv->lock, flags);
1559 /* discard unsent packets */
1560 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1561 for (i = 0; i < NUM_TX_DESC; i++) {
1562 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1565 pci_unmap_single(sis_priv->pci_dev,
1566 sis_priv->tx_ring[i].bufptr, skb->len,
1568 dev_kfree_skb_irq(skb);
1569 sis_priv->tx_skbuff[i] = NULL;
1570 sis_priv->tx_ring[i].cmdsts = 0;
1571 sis_priv->tx_ring[i].bufptr = 0;
1572 net_dev->stats.tx_dropped++;
1575 sis_priv->tx_full = 0;
1576 netif_wake_queue(net_dev);
1578 spin_unlock_irqrestore(&sis_priv->lock, flags);
1580 net_dev->trans_start = jiffies; /* prevent tx timeout */
1582 /* load Transmit Descriptor Register */
1583 sw32(txdp, sis_priv->tx_ring_dma);
1585 /* Enable all known interrupts by setting the interrupt mask. */
1586 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE);
1590 * sis900_start_xmit - sis900 start transmit routine
1591 * @skb: socket buffer pointer to put the data being transmitted
1592 * @net_dev: the net device to transmit with
1594 * Set the transmit buffer descriptor,
1595 * and write TxENA to enable transmit state machine.
1596 * tell upper layer if the buffer is full
1600 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1602 struct sis900_private *sis_priv = netdev_priv(net_dev);
1603 void __iomem *ioaddr = sis_priv->ioaddr;
1605 unsigned long flags;
1606 unsigned int index_cur_tx, index_dirty_tx;
1607 unsigned int count_dirty_tx;
1609 /* Don't transmit data before the complete of auto-negotiation */
1610 if(!sis_priv->autong_complete){
1611 netif_stop_queue(net_dev);
1612 return NETDEV_TX_BUSY;
1615 spin_lock_irqsave(&sis_priv->lock, flags);
1617 /* Calculate the next Tx descriptor entry. */
1618 entry = sis_priv->cur_tx % NUM_TX_DESC;
1619 sis_priv->tx_skbuff[entry] = skb;
1621 /* set the transmit buffer descriptor and enable Transmit State Machine */
1622 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1623 skb->data, skb->len, PCI_DMA_TODEVICE);
1624 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1625 sw32(cr, TxENA | sr32(cr));
1627 sis_priv->cur_tx ++;
1628 index_cur_tx = sis_priv->cur_tx;
1629 index_dirty_tx = sis_priv->dirty_tx;
1631 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1634 if (index_cur_tx == index_dirty_tx) {
1635 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1636 sis_priv->tx_full = 1;
1637 netif_stop_queue(net_dev);
1638 } else if (count_dirty_tx < NUM_TX_DESC) {
1639 /* Typical path, tell upper layer that more transmission is possible */
1640 netif_start_queue(net_dev);
1642 /* buffer full, tell upper layer no more transmission */
1643 sis_priv->tx_full = 1;
1644 netif_stop_queue(net_dev);
1647 spin_unlock_irqrestore(&sis_priv->lock, flags);
1649 if (netif_msg_tx_queued(sis_priv))
1650 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1652 net_dev->name, skb->data, (int)skb->len, entry);
1654 return NETDEV_TX_OK;
1658 * sis900_interrupt - sis900 interrupt handler
1659 * @irq: the irq number
1660 * @dev_instance: the client data object
1662 * The interrupt handler does all of the Rx thread work,
1663 * and cleans up after the Tx thread
1666 static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
1668 struct net_device *net_dev = dev_instance;
1669 struct sis900_private *sis_priv = netdev_priv(net_dev);
1670 int boguscnt = max_interrupt_work;
1671 void __iomem *ioaddr = sis_priv->ioaddr;
1673 unsigned int handled = 0;
1675 spin_lock (&sis_priv->lock);
1680 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1681 /* nothing intresting happened */
1685 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1686 if (status & (RxORN | RxERR | RxOK))
1690 if (status & (TxURN | TxERR | TxIDLE))
1692 sis900_finish_xmit(net_dev);
1694 /* something strange happened !!! */
1695 if (status & HIBERR) {
1696 if(netif_msg_intr(sis_priv))
1697 printk(KERN_INFO "%s: Abnormal interrupt, "
1698 "status %#8.8x.\n", net_dev->name, status);
1701 if (--boguscnt < 0) {
1702 if(netif_msg_intr(sis_priv))
1703 printk(KERN_INFO "%s: Too much work at interrupt, "
1704 "interrupt status = %#8.8x.\n",
1705 net_dev->name, status);
1710 if(netif_msg_intr(sis_priv))
1711 printk(KERN_DEBUG "%s: exiting interrupt, "
1712 "interrupt status = 0x%#8.8x.\n",
1713 net_dev->name, sr32(isr));
1715 spin_unlock (&sis_priv->lock);
1716 return IRQ_RETVAL(handled);
1720 * sis900_rx - sis900 receive routine
1721 * @net_dev: the net device which receives data
1723 * Process receive interrupt events,
1724 * put buffer to higher layer and refill buffer pool
1725 * Note: This function is called by interrupt handler,
1726 * don't do "too much" work here
1729 static int sis900_rx(struct net_device *net_dev)
1731 struct sis900_private *sis_priv = netdev_priv(net_dev);
1732 void __iomem *ioaddr = sis_priv->ioaddr;
1733 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1734 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1737 if (netif_msg_rx_status(sis_priv))
1738 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1740 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1741 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
1743 while (rx_status & OWN) {
1744 unsigned int rx_size;
1745 unsigned int data_size;
1747 if (--rx_work_limit < 0)
1750 data_size = rx_status & DSIZE;
1751 rx_size = data_size - CRC_SIZE;
1753 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1754 /* ``TOOLONG'' flag means jumbo packet received. */
1755 if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
1756 rx_status &= (~ ((unsigned int)TOOLONG));
1759 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1760 /* corrupted packet received */
1761 if (netif_msg_rx_err(sis_priv))
1762 printk(KERN_DEBUG "%s: Corrupted packet "
1763 "received, buffer status = 0x%8.8x/%d.\n",
1764 net_dev->name, rx_status, data_size);
1765 net_dev->stats.rx_errors++;
1766 if (rx_status & OVERRUN)
1767 net_dev->stats.rx_over_errors++;
1768 if (rx_status & (TOOLONG|RUNT))
1769 net_dev->stats.rx_length_errors++;
1770 if (rx_status & (RXISERR | FAERR))
1771 net_dev->stats.rx_frame_errors++;
1772 if (rx_status & CRCERR)
1773 net_dev->stats.rx_crc_errors++;
1774 /* reset buffer descriptor state */
1775 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1777 struct sk_buff * skb;
1778 struct sk_buff * rx_skb;
1780 pci_unmap_single(sis_priv->pci_dev,
1781 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1782 PCI_DMA_FROMDEVICE);
1784 /* refill the Rx buffer, what if there is not enough
1785 * memory for new socket buffer ?? */
1786 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1788 * Not enough memory to refill the buffer
1789 * so we need to recycle the old one so
1790 * as to avoid creating a memory hole
1793 skb = sis_priv->rx_skbuff[entry];
1794 net_dev->stats.rx_dropped++;
1795 goto refill_rx_ring;
1798 /* This situation should never happen, but due to
1799 some unknown bugs, it is possible that
1800 we are working on NULL sk_buff :-( */
1801 if (sis_priv->rx_skbuff[entry] == NULL) {
1802 if (netif_msg_rx_err(sis_priv))
1803 printk(KERN_WARNING "%s: NULL pointer "
1804 "encountered in Rx ring\n"
1805 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1806 net_dev->name, sis_priv->cur_rx,
1807 sis_priv->dirty_rx);
1812 /* give the socket buffer to upper layers */
1813 rx_skb = sis_priv->rx_skbuff[entry];
1814 skb_put(rx_skb, rx_size);
1815 rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
1818 /* some network statistics */
1819 if ((rx_status & BCAST) == MCAST)
1820 net_dev->stats.multicast++;
1821 net_dev->stats.rx_bytes += rx_size;
1822 net_dev->stats.rx_packets++;
1823 sis_priv->dirty_rx++;
1825 sis_priv->rx_skbuff[entry] = skb;
1826 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1827 sis_priv->rx_ring[entry].bufptr =
1828 pci_map_single(sis_priv->pci_dev, skb->data,
1829 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1832 entry = sis_priv->cur_rx % NUM_RX_DESC;
1833 rx_status = sis_priv->rx_ring[entry].cmdsts;
1836 /* refill the Rx buffer, what if the rate of refilling is slower
1837 * than consuming ?? */
1838 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
1839 struct sk_buff *skb;
1841 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1843 if (sis_priv->rx_skbuff[entry] == NULL) {
1844 skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE);
1846 /* not enough memory for skbuff, this makes a
1847 * "hole" on the buffer ring, it is not clear
1848 * how the hardware will react to this kind
1849 * of degenerated buffer */
1850 net_dev->stats.rx_dropped++;
1853 sis_priv->rx_skbuff[entry] = skb;
1854 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1855 sis_priv->rx_ring[entry].bufptr =
1856 pci_map_single(sis_priv->pci_dev, skb->data,
1857 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1860 /* re-enable the potentially idle receive state matchine */
1861 sw32(cr , RxENA | sr32(cr));
1867 * sis900_finish_xmit - finish up transmission of packets
1868 * @net_dev: the net device to be transmitted on
1870 * Check for error condition and free socket buffer etc
1871 * schedule for more transmission as needed
1872 * Note: This function is called by interrupt handler,
1873 * don't do "too much" work here
1876 static void sis900_finish_xmit (struct net_device *net_dev)
1878 struct sis900_private *sis_priv = netdev_priv(net_dev);
1880 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1881 struct sk_buff *skb;
1885 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1886 tx_status = sis_priv->tx_ring[entry].cmdsts;
1888 if (tx_status & OWN) {
1889 /* The packet is not transmitted yet (owned by hardware) !
1890 * Note: the interrupt is generated only when Tx Machine
1891 * is idle, so this is an almost impossible case */
1895 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1896 /* packet unsuccessfully transmitted */
1897 if (netif_msg_tx_err(sis_priv))
1898 printk(KERN_DEBUG "%s: Transmit "
1899 "error, Tx status %8.8x.\n",
1900 net_dev->name, tx_status);
1901 net_dev->stats.tx_errors++;
1902 if (tx_status & UNDERRUN)
1903 net_dev->stats.tx_fifo_errors++;
1904 if (tx_status & ABORT)
1905 net_dev->stats.tx_aborted_errors++;
1906 if (tx_status & NOCARRIER)
1907 net_dev->stats.tx_carrier_errors++;
1908 if (tx_status & OWCOLL)
1909 net_dev->stats.tx_window_errors++;
1911 /* packet successfully transmitted */
1912 net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
1913 net_dev->stats.tx_bytes += tx_status & DSIZE;
1914 net_dev->stats.tx_packets++;
1916 /* Free the original skb. */
1917 skb = sis_priv->tx_skbuff[entry];
1918 pci_unmap_single(sis_priv->pci_dev,
1919 sis_priv->tx_ring[entry].bufptr, skb->len,
1921 dev_kfree_skb_irq(skb);
1922 sis_priv->tx_skbuff[entry] = NULL;
1923 sis_priv->tx_ring[entry].bufptr = 0;
1924 sis_priv->tx_ring[entry].cmdsts = 0;
1927 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1928 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1929 /* The ring is no longer full, clear tx_full and schedule
1930 * more transmission by netif_wake_queue(net_dev) */
1931 sis_priv->tx_full = 0;
1932 netif_wake_queue (net_dev);
1937 * sis900_close - close sis900 device
1938 * @net_dev: the net device to be closed
1940 * Disable interrupts, stop the Tx and Rx Status Machine
1941 * free Tx and RX socket buffer
1944 static int sis900_close(struct net_device *net_dev)
1946 struct sis900_private *sis_priv = netdev_priv(net_dev);
1947 struct pci_dev *pdev = sis_priv->pci_dev;
1948 void __iomem *ioaddr = sis_priv->ioaddr;
1949 struct sk_buff *skb;
1952 netif_stop_queue(net_dev);
1954 /* Disable interrupts by clearing the interrupt mask. */
1958 /* Stop the chip's Tx and Rx Status Machine */
1959 sw32(cr, RxDIS | TxDIS | sr32(cr));
1961 del_timer(&sis_priv->timer);
1963 free_irq(pdev->irq, net_dev);
1965 /* Free Tx and RX skbuff */
1966 for (i = 0; i < NUM_RX_DESC; i++) {
1967 skb = sis_priv->rx_skbuff[i];
1969 pci_unmap_single(pdev, sis_priv->rx_ring[i].bufptr,
1970 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1972 sis_priv->rx_skbuff[i] = NULL;
1975 for (i = 0; i < NUM_TX_DESC; i++) {
1976 skb = sis_priv->tx_skbuff[i];
1978 pci_unmap_single(pdev, sis_priv->tx_ring[i].bufptr,
1979 skb->len, PCI_DMA_TODEVICE);
1981 sis_priv->tx_skbuff[i] = NULL;
1985 /* Green! Put the chip in low-power mode. */
1991 * sis900_get_drvinfo - Return information about driver
1992 * @net_dev: the net device to probe
1993 * @info: container for info returned
1995 * Process ethtool command such as "ehtool -i" to show information
1998 static void sis900_get_drvinfo(struct net_device *net_dev,
1999 struct ethtool_drvinfo *info)
2001 struct sis900_private *sis_priv = netdev_priv(net_dev);
2003 strlcpy(info->driver, SIS900_MODULE_NAME, sizeof(info->driver));
2004 strlcpy(info->version, SIS900_DRV_VERSION, sizeof(info->version));
2005 strlcpy(info->bus_info, pci_name(sis_priv->pci_dev),
2006 sizeof(info->bus_info));
2009 static u32 sis900_get_msglevel(struct net_device *net_dev)
2011 struct sis900_private *sis_priv = netdev_priv(net_dev);
2012 return sis_priv->msg_enable;
2015 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
2017 struct sis900_private *sis_priv = netdev_priv(net_dev);
2018 sis_priv->msg_enable = value;
2021 static u32 sis900_get_link(struct net_device *net_dev)
2023 struct sis900_private *sis_priv = netdev_priv(net_dev);
2024 return mii_link_ok(&sis_priv->mii_info);
2027 static int sis900_get_settings(struct net_device *net_dev,
2028 struct ethtool_cmd *cmd)
2030 struct sis900_private *sis_priv = netdev_priv(net_dev);
2031 spin_lock_irq(&sis_priv->lock);
2032 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2033 spin_unlock_irq(&sis_priv->lock);
2037 static int sis900_set_settings(struct net_device *net_dev,
2038 struct ethtool_cmd *cmd)
2040 struct sis900_private *sis_priv = netdev_priv(net_dev);
2042 spin_lock_irq(&sis_priv->lock);
2043 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2044 spin_unlock_irq(&sis_priv->lock);
2048 static int sis900_nway_reset(struct net_device *net_dev)
2050 struct sis900_private *sis_priv = netdev_priv(net_dev);
2051 return mii_nway_restart(&sis_priv->mii_info);
2055 * sis900_set_wol - Set up Wake on Lan registers
2056 * @net_dev: the net device to probe
2057 * @wol: container for info passed to the driver
2059 * Process ethtool command "wol" to setup wake on lan features.
2060 * SiS900 supports sending WoL events if a correct packet is received,
2061 * but there is no simple way to filter them to only a subset (broadcast,
2062 * multicast, unicast or arp).
2065 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2067 struct sis900_private *sis_priv = netdev_priv(net_dev);
2068 void __iomem *ioaddr = sis_priv->ioaddr;
2069 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2071 if (wol->wolopts == 0) {
2072 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2073 cfgpmcsr &= ~PME_EN;
2074 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2075 sw32(pmctrl, pmctrl_bits);
2076 if (netif_msg_wol(sis_priv))
2077 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2081 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2082 | WAKE_BCAST | WAKE_ARP))
2085 if (wol->wolopts & WAKE_MAGIC)
2086 pmctrl_bits |= MAGICPKT;
2087 if (wol->wolopts & WAKE_PHY)
2088 pmctrl_bits |= LINKON;
2090 sw32(pmctrl, pmctrl_bits);
2092 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2094 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2095 if (netif_msg_wol(sis_priv))
2096 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2101 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2103 struct sis900_private *sp = netdev_priv(net_dev);
2104 void __iomem *ioaddr = sp->ioaddr;
2107 pmctrl_bits = sr32(pmctrl);
2108 if (pmctrl_bits & MAGICPKT)
2109 wol->wolopts |= WAKE_MAGIC;
2110 if (pmctrl_bits & LINKON)
2111 wol->wolopts |= WAKE_PHY;
2113 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2116 static const struct ethtool_ops sis900_ethtool_ops = {
2117 .get_drvinfo = sis900_get_drvinfo,
2118 .get_msglevel = sis900_get_msglevel,
2119 .set_msglevel = sis900_set_msglevel,
2120 .get_link = sis900_get_link,
2121 .get_settings = sis900_get_settings,
2122 .set_settings = sis900_set_settings,
2123 .nway_reset = sis900_nway_reset,
2124 .get_wol = sis900_get_wol,
2125 .set_wol = sis900_set_wol
2129 * mii_ioctl - process MII i/o control command
2130 * @net_dev: the net device to command for
2131 * @rq: parameter for command
2132 * @cmd: the i/o command
2134 * Process MII command like read/write MII register
2137 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2139 struct sis900_private *sis_priv = netdev_priv(net_dev);
2140 struct mii_ioctl_data *data = if_mii(rq);
2143 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2144 data->phy_id = sis_priv->mii->phy_addr;
2147 case SIOCGMIIREG: /* Read MII PHY register. */
2148 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2151 case SIOCSMIIREG: /* Write MII PHY register. */
2152 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2160 * sis900_set_config - Set media type by net_device.set_config
2161 * @dev: the net device for media type change
2162 * @map: ifmap passed by ifconfig
2164 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2165 * we support only port changes. All other runtime configuration
2166 * changes will be ignored
2169 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2171 struct sis900_private *sis_priv = netdev_priv(dev);
2172 struct mii_phy *mii_phy = sis_priv->mii;
2176 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2177 /* we switch on the ifmap->port field. I couldn't find anything
2178 * like a definition or standard for the values of that field.
2179 * I think the meaning of those values is device specific. But
2180 * since I would like to change the media type via the ifconfig
2181 * command I use the definition from linux/netdevice.h
2182 * (which seems to be different from the ifport(pcmcia) definition) */
2184 case IF_PORT_UNKNOWN: /* use auto here */
2185 dev->if_port = map->port;
2186 /* we are going to change the media type, so the Link
2187 * will be temporary down and we need to reflect that
2188 * here. When the Link comes up again, it will be
2189 * sensed by the sis_timer procedure, which also does
2190 * all the rest for us */
2191 netif_carrier_off(dev);
2193 /* read current state */
2194 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2196 /* enable auto negotiation and reset the negotioation
2197 * (I don't really know what the auto negatiotiation
2198 * reset really means, but it sounds for me right to
2200 mdio_write(dev, mii_phy->phy_addr,
2201 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2205 case IF_PORT_10BASET: /* 10BaseT */
2206 dev->if_port = map->port;
2208 /* we are going to change the media type, so the Link
2209 * will be temporary down and we need to reflect that
2210 * here. When the Link comes up again, it will be
2211 * sensed by the sis_timer procedure, which also does
2212 * all the rest for us */
2213 netif_carrier_off(dev);
2215 /* set Speed to 10Mbps */
2216 /* read current state */
2217 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2219 /* disable auto negotiation and force 10MBit mode*/
2220 mdio_write(dev, mii_phy->phy_addr,
2221 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2225 case IF_PORT_100BASET: /* 100BaseT */
2226 case IF_PORT_100BASETX: /* 100BaseTx */
2227 dev->if_port = map->port;
2229 /* we are going to change the media type, so the Link
2230 * will be temporary down and we need to reflect that
2231 * here. When the Link comes up again, it will be
2232 * sensed by the sis_timer procedure, which also does
2233 * all the rest for us */
2234 netif_carrier_off(dev);
2236 /* set Speed to 100Mbps */
2237 /* disable auto negotiation and enable 100MBit Mode */
2238 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2239 mdio_write(dev, mii_phy->phy_addr,
2240 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2245 case IF_PORT_10BASE2: /* 10Base2 */
2246 case IF_PORT_AUI: /* AUI */
2247 case IF_PORT_100BASEFX: /* 100BaseFx */
2248 /* These Modes are not supported (are they?)*/
2260 * sis900_mcast_bitnr - compute hashtable index
2261 * @addr: multicast address
2262 * @revision: revision id of chip
2264 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2265 * hash table, which makes this function a little bit different from other drivers
2266 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2267 * multicast hash table.
2270 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2273 u32 crc = ether_crc(6, addr);
2275 /* leave 8 or 7 most siginifant bits */
2276 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2277 return (int)(crc >> 24);
2279 return (int)(crc >> 25);
2283 * set_rx_mode - Set SiS900 receive mode
2284 * @net_dev: the net device to be set
2286 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2287 * And set the appropriate multicast filter.
2288 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2291 static void set_rx_mode(struct net_device *net_dev)
2293 struct sis900_private *sis_priv = netdev_priv(net_dev);
2294 void __iomem *ioaddr = sis_priv->ioaddr;
2295 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2296 int i, table_entries;
2299 /* 635 Hash Table entries = 256(2^16) */
2300 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2301 (sis_priv->chipset_rev == SIS900B_900_REV))
2306 if (net_dev->flags & IFF_PROMISC) {
2307 /* Accept any kinds of packets */
2308 rx_mode = RFPromiscuous;
2309 for (i = 0; i < table_entries; i++)
2310 mc_filter[i] = 0xffff;
2311 } else if ((netdev_mc_count(net_dev) > multicast_filter_limit) ||
2312 (net_dev->flags & IFF_ALLMULTI)) {
2313 /* too many multicast addresses or accept all multicast packet */
2314 rx_mode = RFAAB | RFAAM;
2315 for (i = 0; i < table_entries; i++)
2316 mc_filter[i] = 0xffff;
2318 /* Accept Broadcast packet, destination address matchs our
2319 * MAC address, use Receive Filter to reject unwanted MCAST
2321 struct netdev_hw_addr *ha;
2324 netdev_for_each_mc_addr(ha, net_dev) {
2325 unsigned int bit_nr;
2327 bit_nr = sis900_mcast_bitnr(ha->addr,
2328 sis_priv->chipset_rev);
2329 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2333 /* update Multicast Hash Table in Receive Filter */
2334 for (i = 0; i < table_entries; i++) {
2335 /* why plus 0x04 ??, That makes the correct value for hash table. */
2336 sw32(rfcr, (u32)(0x00000004 + i) << RFADDR_shift);
2337 sw32(rfdr, mc_filter[i]);
2340 sw32(rfcr, RFEN | rx_mode);
2342 /* sis900 is capable of looping back packets at MAC level for
2343 * debugging purpose */
2344 if (net_dev->flags & IFF_LOOPBACK) {
2346 /* We must disable Tx/Rx before setting loopback mode */
2347 cr_saved = sr32(cr);
2348 sw32(cr, cr_saved | TxDIS | RxDIS);
2349 /* enable loopback */
2350 sw32(txcfg, sr32(txcfg) | TxMLB);
2351 sw32(rxcfg, sr32(rxcfg) | RxATX);
2358 * sis900_reset - Reset sis900 MAC
2359 * @net_dev: the net device to reset
2361 * reset sis900 MAC and wait until finished
2362 * reset through command register
2363 * change backoff algorithm for 900B0 & 635 M/B
2366 static void sis900_reset(struct net_device *net_dev)
2368 struct sis900_private *sis_priv = netdev_priv(net_dev);
2369 void __iomem *ioaddr = sis_priv->ioaddr;
2370 u32 status = TxRCMP | RxRCMP;
2377 sw32(cr, RxRESET | TxRESET | RESET | sr32(cr));
2379 /* Check that the chip has finished the reset. */
2380 for (i = 0; status && (i < 1000); i++)
2381 status ^= sr32(isr) & status;
2383 if (sis_priv->chipset_rev >= SIS635A_900_REV ||
2384 sis_priv->chipset_rev == SIS900B_900_REV)
2385 sw32(cfg, PESEL | RND_CNT);
2391 * sis900_remove - Remove sis900 device
2392 * @pci_dev: the pci device to be removed
2394 * remove and release SiS900 net device
2397 static void sis900_remove(struct pci_dev *pci_dev)
2399 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2400 struct sis900_private *sis_priv = netdev_priv(net_dev);
2402 unregister_netdev(net_dev);
2404 while (sis_priv->first_mii) {
2405 struct mii_phy *phy = sis_priv->first_mii;
2407 sis_priv->first_mii = phy->next;
2411 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2412 sis_priv->rx_ring_dma);
2413 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2414 sis_priv->tx_ring_dma);
2415 pci_iounmap(pci_dev, sis_priv->ioaddr);
2416 free_netdev(net_dev);
2417 pci_release_regions(pci_dev);
2418 pci_set_drvdata(pci_dev, NULL);
2423 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2425 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2426 struct sis900_private *sis_priv = netdev_priv(net_dev);
2427 void __iomem *ioaddr = sis_priv->ioaddr;
2429 if(!netif_running(net_dev))
2432 netif_stop_queue(net_dev);
2433 netif_device_detach(net_dev);
2435 /* Stop the chip's Tx and Rx Status Machine */
2436 sw32(cr, RxDIS | TxDIS | sr32(cr));
2438 pci_set_power_state(pci_dev, PCI_D3hot);
2439 pci_save_state(pci_dev);
2444 static int sis900_resume(struct pci_dev *pci_dev)
2446 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2447 struct sis900_private *sis_priv = netdev_priv(net_dev);
2448 void __iomem *ioaddr = sis_priv->ioaddr;
2450 if(!netif_running(net_dev))
2452 pci_restore_state(pci_dev);
2453 pci_set_power_state(pci_dev, PCI_D0);
2455 sis900_init_rxfilter(net_dev);
2457 sis900_init_tx_ring(net_dev);
2458 sis900_init_rx_ring(net_dev);
2460 set_rx_mode(net_dev);
2462 netif_device_attach(net_dev);
2463 netif_start_queue(net_dev);
2465 /* Workaround for EDB */
2466 sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2468 /* Enable all known interrupts by setting the interrupt mask. */
2469 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE);
2470 sw32(cr, RxENA | sr32(cr));
2473 sis900_check_mode(net_dev, sis_priv->mii);
2477 #endif /* CONFIG_PM */
2479 static struct pci_driver sis900_pci_driver = {
2480 .name = SIS900_MODULE_NAME,
2481 .id_table = sis900_pci_tbl,
2482 .probe = sis900_probe,
2483 .remove = sis900_remove,
2485 .suspend = sis900_suspend,
2486 .resume = sis900_resume,
2487 #endif /* CONFIG_PM */
2490 static int __init sis900_init_module(void)
2492 /* when a module, this is printed whether or not devices are found in probe */
2497 return pci_register_driver(&sis900_pci_driver);
2500 static void __exit sis900_cleanup_module(void)
2502 pci_unregister_driver(&sis900_pci_driver);
2505 module_init(sis900_init_module);
2506 module_exit(sis900_cleanup_module);