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);
1192 if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev,
1193 sis_priv->rx_ring[i].bufptr))) {
1195 sis_priv->rx_skbuff[i] = NULL;
1199 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1201 /* load Receive Descriptor Register */
1202 sw32(rxdp, sis_priv->rx_ring_dma);
1203 if (netif_msg_hw(sis_priv))
1204 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1205 net_dev->name, sr32(rxdp));
1209 * sis630_set_eq - set phy equalizer value for 630 LAN
1210 * @net_dev: the net device to set equalizer value
1211 * @revision: 630 LAN revision number
1213 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1214 * PHY register 14h(Test)
1215 * Bit 14: 0 -- Automatically detect (default)
1216 * 1 -- Manually set Equalizer filter
1217 * Bit 13: 0 -- (Default)
1218 * 1 -- Speed up convergence of equalizer setting
1219 * Bit 9 : 0 -- (Default)
1220 * 1 -- Disable Baseline Wander
1221 * Bit 3~7 -- Equalizer filter setting
1222 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1223 * Then calculate equalizer value
1224 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1225 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1226 * Calculate Equalizer value:
1227 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-detect proper equalizer value.
1228 * When the equalizer is stable, this value is not a fixed value. It will be within
1229 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1230 * 0 <= max <= 4 --> set equalizer to max
1231 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1232 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1235 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1237 struct sis900_private *sis_priv = netdev_priv(net_dev);
1238 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1241 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1242 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1245 if (netif_carrier_ok(net_dev)) {
1246 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1247 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1248 (0x2200 | reg14h) & 0xBFFF);
1249 for (i=0; i < maxcount; i++) {
1250 eq_value = (0x00F8 & mdio_read(net_dev,
1251 sis_priv->cur_phy, MII_RESV)) >> 3;
1253 max_value=min_value=eq_value;
1254 max_value = (eq_value > max_value) ?
1255 eq_value : max_value;
1256 min_value = (eq_value < min_value) ?
1257 eq_value : min_value;
1259 /* 630E rule to determine the equalizer value */
1260 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1261 revision == SIS630ET_900_REV) {
1263 eq_value = max_value;
1264 else if (max_value >= 5 && max_value < 15)
1265 eq_value = (max_value == min_value) ?
1266 max_value+2 : max_value+1;
1267 else if (max_value >= 15)
1268 eq_value=(max_value == min_value) ?
1269 max_value+6 : max_value+5;
1271 /* 630B0&B1 rule to determine the equalizer value */
1272 if (revision == SIS630A_900_REV &&
1273 (sis_priv->host_bridge_rev == SIS630B0 ||
1274 sis_priv->host_bridge_rev == SIS630B1)) {
1278 eq_value = (max_value + min_value + 1)/2;
1280 /* write equalizer value and setting */
1281 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1282 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1283 reg14h = (reg14h | 0x6000) & 0xFDFF;
1284 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1286 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1287 if (revision == SIS630A_900_REV &&
1288 (sis_priv->host_bridge_rev == SIS630B0 ||
1289 sis_priv->host_bridge_rev == SIS630B1))
1290 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1291 (reg14h | 0x2200) & 0xBFFF);
1293 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1294 (reg14h | 0x2000) & 0xBFFF);
1299 * sis900_timer - sis900 timer routine
1300 * @data: pointer to sis900 net device
1302 * On each timer ticks we check two things,
1303 * link status (ON/OFF) and link mode (10/100/Full/Half)
1306 static void sis900_timer(unsigned long data)
1308 struct net_device *net_dev = (struct net_device *)data;
1309 struct sis900_private *sis_priv = netdev_priv(net_dev);
1310 struct mii_phy *mii_phy = sis_priv->mii;
1311 static const int next_tick = 5*HZ;
1314 if (!sis_priv->autong_complete){
1315 int uninitialized_var(speed), duplex = 0;
1317 sis900_read_mode(net_dev, &speed, &duplex);
1319 sis900_set_mode(sis_priv, speed, duplex);
1320 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1321 netif_carrier_on(net_dev);
1324 sis_priv->timer.expires = jiffies + HZ;
1325 add_timer(&sis_priv->timer);
1329 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1330 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1332 /* Link OFF -> ON */
1333 if (!netif_carrier_ok(net_dev)) {
1335 /* Search for new PHY */
1336 status = sis900_default_phy(net_dev);
1337 mii_phy = sis_priv->mii;
1339 if (status & MII_STAT_LINK)
1340 sis900_check_mode(net_dev, mii_phy);
1342 /* Link ON -> OFF */
1343 if (!(status & MII_STAT_LINK)){
1344 netif_carrier_off(net_dev);
1345 if(netif_msg_link(sis_priv))
1346 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1348 /* Change mode issue */
1349 if ((mii_phy->phy_id0 == 0x001D) &&
1350 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1351 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1353 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1359 sis_priv->timer.expires = jiffies + next_tick;
1360 add_timer(&sis_priv->timer);
1364 * sis900_check_mode - check the media mode for sis900
1365 * @net_dev: the net device to be checked
1366 * @mii_phy: the mii phy
1368 * Older driver gets the media mode from mii status output
1369 * register. Now we set our media capability and auto-negotiate
1370 * to get the upper bound of speed and duplex between two ends.
1371 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1372 * and autong_complete should be set to 1.
1375 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1377 struct sis900_private *sis_priv = netdev_priv(net_dev);
1378 void __iomem *ioaddr = sis_priv->ioaddr;
1381 if (mii_phy->phy_types == LAN) {
1382 sw32(cfg, ~EXD & sr32(cfg));
1383 sis900_set_capability(net_dev , mii_phy);
1384 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1386 sw32(cfg, EXD | sr32(cfg));
1387 speed = HW_SPEED_HOME;
1388 duplex = FDX_CAPABLE_HALF_SELECTED;
1389 sis900_set_mode(sis_priv, speed, duplex);
1390 sis_priv->autong_complete = 1;
1395 * sis900_set_mode - Set the media mode of mac register.
1396 * @sp: the device private data
1397 * @speed : the transmit speed to be determined
1398 * @duplex: the duplex mode to be determined
1400 * Set the media mode of mac register txcfg/rxcfg according to
1401 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1402 * bus is used instead of PCI bus. When this bit is set 1, the
1403 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1407 static void sis900_set_mode(struct sis900_private *sp, int speed, int duplex)
1409 void __iomem *ioaddr = sp->ioaddr;
1410 u32 tx_flags = 0, rx_flags = 0;
1412 if (sr32( cfg) & EDB_MASTER_EN) {
1413 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1414 (TX_FILL_THRESH << TxFILLT_shift);
1415 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1417 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1418 (TX_FILL_THRESH << TxFILLT_shift);
1419 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1422 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1423 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1424 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1426 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1427 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1430 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1431 tx_flags |= (TxCSI | TxHBI);
1435 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1436 /* Can accept Jumbo packet */
1440 sw32(txcfg, tx_flags);
1441 sw32(rxcfg, rx_flags);
1445 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1446 * @net_dev: the net device to read mode for
1447 * @phy_addr: mii phy address
1449 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1450 * autong_complete should be set to 0 when starting auto-negotiation.
1451 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1452 * sis900_timer will wait for link on again if autong_complete = 0.
1455 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1457 struct sis900_private *sis_priv = netdev_priv(net_dev);
1461 for (i = 0; i < 2; i++)
1462 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1464 if (!(status & MII_STAT_LINK)){
1465 if(netif_msg_link(sis_priv))
1466 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1467 sis_priv->autong_complete = 1;
1468 netif_carrier_off(net_dev);
1472 /* (Re)start AutoNegotiate */
1473 mdio_write(net_dev, phy_addr, MII_CONTROL,
1474 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1475 sis_priv->autong_complete = 0;
1480 * sis900_read_mode - read media mode for sis900 internal phy
1481 * @net_dev: the net device to read mode for
1482 * @speed : the transmit speed to be determined
1483 * @duplex : the duplex mode to be determined
1485 * The capability of remote end will be put in mii register autorec
1486 * after auto-negotiation. Use AND operation to get the upper bound
1487 * of speed and duplex between two ends.
1490 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1492 struct sis900_private *sis_priv = netdev_priv(net_dev);
1493 struct mii_phy *phy = sis_priv->mii;
1494 int phy_addr = sis_priv->cur_phy;
1496 u16 autoadv, autorec;
1499 for (i = 0; i < 2; i++)
1500 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1502 if (!(status & MII_STAT_LINK))
1505 /* AutoNegotiate completed */
1506 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1507 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1508 status = autoadv & autorec;
1510 *speed = HW_SPEED_10_MBPS;
1511 *duplex = FDX_CAPABLE_HALF_SELECTED;
1513 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1514 *speed = HW_SPEED_100_MBPS;
1515 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1516 *duplex = FDX_CAPABLE_FULL_SELECTED;
1518 sis_priv->autong_complete = 1;
1520 /* Workaround for Realtek RTL8201 PHY issue */
1521 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1522 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1523 *duplex = FDX_CAPABLE_FULL_SELECTED;
1524 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1525 *speed = HW_SPEED_100_MBPS;
1528 if(netif_msg_link(sis_priv))
1529 printk(KERN_INFO "%s: Media Link On %s %s-duplex\n",
1531 *speed == HW_SPEED_100_MBPS ?
1532 "100mbps" : "10mbps",
1533 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1538 * sis900_tx_timeout - sis900 transmit timeout routine
1539 * @net_dev: the net device to transmit
1541 * print transmit timeout status
1542 * disable interrupts and do some tasks
1545 static void sis900_tx_timeout(struct net_device *net_dev)
1547 struct sis900_private *sis_priv = netdev_priv(net_dev);
1548 void __iomem *ioaddr = sis_priv->ioaddr;
1549 unsigned long flags;
1552 if (netif_msg_tx_err(sis_priv)) {
1553 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x\n",
1554 net_dev->name, sr32(cr), sr32(isr));
1557 /* Disable interrupts by clearing the interrupt mask. */
1560 /* use spinlock to prevent interrupt handler accessing buffer ring */
1561 spin_lock_irqsave(&sis_priv->lock, flags);
1563 /* discard unsent packets */
1564 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1565 for (i = 0; i < NUM_TX_DESC; i++) {
1566 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1569 pci_unmap_single(sis_priv->pci_dev,
1570 sis_priv->tx_ring[i].bufptr, skb->len,
1572 dev_kfree_skb_irq(skb);
1573 sis_priv->tx_skbuff[i] = NULL;
1574 sis_priv->tx_ring[i].cmdsts = 0;
1575 sis_priv->tx_ring[i].bufptr = 0;
1576 net_dev->stats.tx_dropped++;
1579 sis_priv->tx_full = 0;
1580 netif_wake_queue(net_dev);
1582 spin_unlock_irqrestore(&sis_priv->lock, flags);
1584 net_dev->trans_start = jiffies; /* prevent tx timeout */
1586 /* load Transmit Descriptor Register */
1587 sw32(txdp, sis_priv->tx_ring_dma);
1589 /* Enable all known interrupts by setting the interrupt mask. */
1590 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE);
1594 * sis900_start_xmit - sis900 start transmit routine
1595 * @skb: socket buffer pointer to put the data being transmitted
1596 * @net_dev: the net device to transmit with
1598 * Set the transmit buffer descriptor,
1599 * and write TxENA to enable transmit state machine.
1600 * tell upper layer if the buffer is full
1604 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1606 struct sis900_private *sis_priv = netdev_priv(net_dev);
1607 void __iomem *ioaddr = sis_priv->ioaddr;
1609 unsigned long flags;
1610 unsigned int index_cur_tx, index_dirty_tx;
1611 unsigned int count_dirty_tx;
1613 spin_lock_irqsave(&sis_priv->lock, flags);
1615 /* Calculate the next Tx descriptor entry. */
1616 entry = sis_priv->cur_tx % NUM_TX_DESC;
1617 sis_priv->tx_skbuff[entry] = skb;
1619 /* set the transmit buffer descriptor and enable Transmit State Machine */
1620 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1621 skb->data, skb->len, PCI_DMA_TODEVICE);
1622 if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev,
1623 sis_priv->tx_ring[entry].bufptr))) {
1625 sis_priv->tx_skbuff[entry] = NULL;
1626 net_dev->stats.tx_dropped++;
1627 spin_unlock_irqrestore(&sis_priv->lock, flags);
1628 return NETDEV_TX_OK;
1630 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1631 sw32(cr, TxENA | sr32(cr));
1633 sis_priv->cur_tx ++;
1634 index_cur_tx = sis_priv->cur_tx;
1635 index_dirty_tx = sis_priv->dirty_tx;
1637 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1640 if (index_cur_tx == index_dirty_tx) {
1641 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1642 sis_priv->tx_full = 1;
1643 netif_stop_queue(net_dev);
1644 } else if (count_dirty_tx < NUM_TX_DESC) {
1645 /* Typical path, tell upper layer that more transmission is possible */
1646 netif_start_queue(net_dev);
1648 /* buffer full, tell upper layer no more transmission */
1649 sis_priv->tx_full = 1;
1650 netif_stop_queue(net_dev);
1653 spin_unlock_irqrestore(&sis_priv->lock, flags);
1655 if (netif_msg_tx_queued(sis_priv))
1656 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1658 net_dev->name, skb->data, (int)skb->len, entry);
1660 return NETDEV_TX_OK;
1664 * sis900_interrupt - sis900 interrupt handler
1665 * @irq: the irq number
1666 * @dev_instance: the client data object
1668 * The interrupt handler does all of the Rx thread work,
1669 * and cleans up after the Tx thread
1672 static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
1674 struct net_device *net_dev = dev_instance;
1675 struct sis900_private *sis_priv = netdev_priv(net_dev);
1676 int boguscnt = max_interrupt_work;
1677 void __iomem *ioaddr = sis_priv->ioaddr;
1679 unsigned int handled = 0;
1681 spin_lock (&sis_priv->lock);
1686 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1687 /* nothing intresting happened */
1691 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1692 if (status & (RxORN | RxERR | RxOK))
1696 if (status & (TxURN | TxERR | TxIDLE))
1698 sis900_finish_xmit(net_dev);
1700 /* something strange happened !!! */
1701 if (status & HIBERR) {
1702 if(netif_msg_intr(sis_priv))
1703 printk(KERN_INFO "%s: Abnormal interrupt, "
1704 "status %#8.8x.\n", net_dev->name, status);
1707 if (--boguscnt < 0) {
1708 if(netif_msg_intr(sis_priv))
1709 printk(KERN_INFO "%s: Too much work at interrupt, "
1710 "interrupt status = %#8.8x.\n",
1711 net_dev->name, status);
1716 if(netif_msg_intr(sis_priv))
1717 printk(KERN_DEBUG "%s: exiting interrupt, "
1718 "interrupt status = 0x%#8.8x.\n",
1719 net_dev->name, sr32(isr));
1721 spin_unlock (&sis_priv->lock);
1722 return IRQ_RETVAL(handled);
1726 * sis900_rx - sis900 receive routine
1727 * @net_dev: the net device which receives data
1729 * Process receive interrupt events,
1730 * put buffer to higher layer and refill buffer pool
1731 * Note: This function is called by interrupt handler,
1732 * don't do "too much" work here
1735 static int sis900_rx(struct net_device *net_dev)
1737 struct sis900_private *sis_priv = netdev_priv(net_dev);
1738 void __iomem *ioaddr = sis_priv->ioaddr;
1739 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1740 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1743 if (netif_msg_rx_status(sis_priv))
1744 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1746 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1747 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
1749 while (rx_status & OWN) {
1750 unsigned int rx_size;
1751 unsigned int data_size;
1753 if (--rx_work_limit < 0)
1756 data_size = rx_status & DSIZE;
1757 rx_size = data_size - CRC_SIZE;
1759 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1760 /* ``TOOLONG'' flag means jumbo packet received. */
1761 if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
1762 rx_status &= (~ ((unsigned int)TOOLONG));
1765 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1766 /* corrupted packet received */
1767 if (netif_msg_rx_err(sis_priv))
1768 printk(KERN_DEBUG "%s: Corrupted packet "
1769 "received, buffer status = 0x%8.8x/%d.\n",
1770 net_dev->name, rx_status, data_size);
1771 net_dev->stats.rx_errors++;
1772 if (rx_status & OVERRUN)
1773 net_dev->stats.rx_over_errors++;
1774 if (rx_status & (TOOLONG|RUNT))
1775 net_dev->stats.rx_length_errors++;
1776 if (rx_status & (RXISERR | FAERR))
1777 net_dev->stats.rx_frame_errors++;
1778 if (rx_status & CRCERR)
1779 net_dev->stats.rx_crc_errors++;
1780 /* reset buffer descriptor state */
1781 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1783 struct sk_buff * skb;
1784 struct sk_buff * rx_skb;
1786 pci_unmap_single(sis_priv->pci_dev,
1787 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1788 PCI_DMA_FROMDEVICE);
1790 /* refill the Rx buffer, what if there is not enough
1791 * memory for new socket buffer ?? */
1792 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1794 * Not enough memory to refill the buffer
1795 * so we need to recycle the old one so
1796 * as to avoid creating a memory hole
1799 skb = sis_priv->rx_skbuff[entry];
1800 net_dev->stats.rx_dropped++;
1801 goto refill_rx_ring;
1804 /* This situation should never happen, but due to
1805 some unknown bugs, it is possible that
1806 we are working on NULL sk_buff :-( */
1807 if (sis_priv->rx_skbuff[entry] == NULL) {
1808 if (netif_msg_rx_err(sis_priv))
1809 printk(KERN_WARNING "%s: NULL pointer "
1810 "encountered in Rx ring\n"
1811 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1812 net_dev->name, sis_priv->cur_rx,
1813 sis_priv->dirty_rx);
1818 /* give the socket buffer to upper layers */
1819 rx_skb = sis_priv->rx_skbuff[entry];
1820 skb_put(rx_skb, rx_size);
1821 rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
1824 /* some network statistics */
1825 if ((rx_status & BCAST) == MCAST)
1826 net_dev->stats.multicast++;
1827 net_dev->stats.rx_bytes += rx_size;
1828 net_dev->stats.rx_packets++;
1829 sis_priv->dirty_rx++;
1831 sis_priv->rx_skbuff[entry] = skb;
1832 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1833 sis_priv->rx_ring[entry].bufptr =
1834 pci_map_single(sis_priv->pci_dev, skb->data,
1835 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1836 if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev,
1837 sis_priv->rx_ring[entry].bufptr))) {
1838 dev_kfree_skb_irq(skb);
1839 sis_priv->rx_skbuff[entry] = NULL;
1844 entry = sis_priv->cur_rx % NUM_RX_DESC;
1845 rx_status = sis_priv->rx_ring[entry].cmdsts;
1848 /* refill the Rx buffer, what if the rate of refilling is slower
1849 * than consuming ?? */
1850 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
1851 struct sk_buff *skb;
1853 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1855 if (sis_priv->rx_skbuff[entry] == NULL) {
1856 skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE);
1858 /* not enough memory for skbuff, this makes a
1859 * "hole" on the buffer ring, it is not clear
1860 * how the hardware will react to this kind
1861 * of degenerated buffer */
1862 net_dev->stats.rx_dropped++;
1865 sis_priv->rx_skbuff[entry] = skb;
1866 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1867 sis_priv->rx_ring[entry].bufptr =
1868 pci_map_single(sis_priv->pci_dev, skb->data,
1869 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1870 if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev,
1871 sis_priv->rx_ring[entry].bufptr))) {
1872 dev_kfree_skb_irq(skb);
1873 sis_priv->rx_skbuff[entry] = NULL;
1878 /* re-enable the potentially idle receive state matchine */
1879 sw32(cr , RxENA | sr32(cr));
1885 * sis900_finish_xmit - finish up transmission of packets
1886 * @net_dev: the net device to be transmitted on
1888 * Check for error condition and free socket buffer etc
1889 * schedule for more transmission as needed
1890 * Note: This function is called by interrupt handler,
1891 * don't do "too much" work here
1894 static void sis900_finish_xmit (struct net_device *net_dev)
1896 struct sis900_private *sis_priv = netdev_priv(net_dev);
1898 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1899 struct sk_buff *skb;
1903 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1904 tx_status = sis_priv->tx_ring[entry].cmdsts;
1906 if (tx_status & OWN) {
1907 /* The packet is not transmitted yet (owned by hardware) !
1908 * Note: the interrupt is generated only when Tx Machine
1909 * is idle, so this is an almost impossible case */
1913 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1914 /* packet unsuccessfully transmitted */
1915 if (netif_msg_tx_err(sis_priv))
1916 printk(KERN_DEBUG "%s: Transmit "
1917 "error, Tx status %8.8x.\n",
1918 net_dev->name, tx_status);
1919 net_dev->stats.tx_errors++;
1920 if (tx_status & UNDERRUN)
1921 net_dev->stats.tx_fifo_errors++;
1922 if (tx_status & ABORT)
1923 net_dev->stats.tx_aborted_errors++;
1924 if (tx_status & NOCARRIER)
1925 net_dev->stats.tx_carrier_errors++;
1926 if (tx_status & OWCOLL)
1927 net_dev->stats.tx_window_errors++;
1929 /* packet successfully transmitted */
1930 net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
1931 net_dev->stats.tx_bytes += tx_status & DSIZE;
1932 net_dev->stats.tx_packets++;
1934 /* Free the original skb. */
1935 skb = sis_priv->tx_skbuff[entry];
1936 pci_unmap_single(sis_priv->pci_dev,
1937 sis_priv->tx_ring[entry].bufptr, skb->len,
1939 dev_kfree_skb_irq(skb);
1940 sis_priv->tx_skbuff[entry] = NULL;
1941 sis_priv->tx_ring[entry].bufptr = 0;
1942 sis_priv->tx_ring[entry].cmdsts = 0;
1945 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1946 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1947 /* The ring is no longer full, clear tx_full and schedule
1948 * more transmission by netif_wake_queue(net_dev) */
1949 sis_priv->tx_full = 0;
1950 netif_wake_queue (net_dev);
1955 * sis900_close - close sis900 device
1956 * @net_dev: the net device to be closed
1958 * Disable interrupts, stop the Tx and Rx Status Machine
1959 * free Tx and RX socket buffer
1962 static int sis900_close(struct net_device *net_dev)
1964 struct sis900_private *sis_priv = netdev_priv(net_dev);
1965 struct pci_dev *pdev = sis_priv->pci_dev;
1966 void __iomem *ioaddr = sis_priv->ioaddr;
1967 struct sk_buff *skb;
1970 netif_stop_queue(net_dev);
1972 /* Disable interrupts by clearing the interrupt mask. */
1976 /* Stop the chip's Tx and Rx Status Machine */
1977 sw32(cr, RxDIS | TxDIS | sr32(cr));
1979 del_timer(&sis_priv->timer);
1981 free_irq(pdev->irq, net_dev);
1983 /* Free Tx and RX skbuff */
1984 for (i = 0; i < NUM_RX_DESC; i++) {
1985 skb = sis_priv->rx_skbuff[i];
1987 pci_unmap_single(pdev, sis_priv->rx_ring[i].bufptr,
1988 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1990 sis_priv->rx_skbuff[i] = NULL;
1993 for (i = 0; i < NUM_TX_DESC; i++) {
1994 skb = sis_priv->tx_skbuff[i];
1996 pci_unmap_single(pdev, sis_priv->tx_ring[i].bufptr,
1997 skb->len, PCI_DMA_TODEVICE);
1999 sis_priv->tx_skbuff[i] = NULL;
2003 /* Green! Put the chip in low-power mode. */
2009 * sis900_get_drvinfo - Return information about driver
2010 * @net_dev: the net device to probe
2011 * @info: container for info returned
2013 * Process ethtool command such as "ehtool -i" to show information
2016 static void sis900_get_drvinfo(struct net_device *net_dev,
2017 struct ethtool_drvinfo *info)
2019 struct sis900_private *sis_priv = netdev_priv(net_dev);
2021 strlcpy(info->driver, SIS900_MODULE_NAME, sizeof(info->driver));
2022 strlcpy(info->version, SIS900_DRV_VERSION, sizeof(info->version));
2023 strlcpy(info->bus_info, pci_name(sis_priv->pci_dev),
2024 sizeof(info->bus_info));
2027 static u32 sis900_get_msglevel(struct net_device *net_dev)
2029 struct sis900_private *sis_priv = netdev_priv(net_dev);
2030 return sis_priv->msg_enable;
2033 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
2035 struct sis900_private *sis_priv = netdev_priv(net_dev);
2036 sis_priv->msg_enable = value;
2039 static u32 sis900_get_link(struct net_device *net_dev)
2041 struct sis900_private *sis_priv = netdev_priv(net_dev);
2042 return mii_link_ok(&sis_priv->mii_info);
2045 static int sis900_get_settings(struct net_device *net_dev,
2046 struct ethtool_cmd *cmd)
2048 struct sis900_private *sis_priv = netdev_priv(net_dev);
2049 spin_lock_irq(&sis_priv->lock);
2050 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2051 spin_unlock_irq(&sis_priv->lock);
2055 static int sis900_set_settings(struct net_device *net_dev,
2056 struct ethtool_cmd *cmd)
2058 struct sis900_private *sis_priv = netdev_priv(net_dev);
2060 spin_lock_irq(&sis_priv->lock);
2061 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2062 spin_unlock_irq(&sis_priv->lock);
2066 static int sis900_nway_reset(struct net_device *net_dev)
2068 struct sis900_private *sis_priv = netdev_priv(net_dev);
2069 return mii_nway_restart(&sis_priv->mii_info);
2073 * sis900_set_wol - Set up Wake on Lan registers
2074 * @net_dev: the net device to probe
2075 * @wol: container for info passed to the driver
2077 * Process ethtool command "wol" to setup wake on lan features.
2078 * SiS900 supports sending WoL events if a correct packet is received,
2079 * but there is no simple way to filter them to only a subset (broadcast,
2080 * multicast, unicast or arp).
2083 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2085 struct sis900_private *sis_priv = netdev_priv(net_dev);
2086 void __iomem *ioaddr = sis_priv->ioaddr;
2087 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2089 if (wol->wolopts == 0) {
2090 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2091 cfgpmcsr &= ~PME_EN;
2092 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2093 sw32(pmctrl, pmctrl_bits);
2094 if (netif_msg_wol(sis_priv))
2095 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2099 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2100 | WAKE_BCAST | WAKE_ARP))
2103 if (wol->wolopts & WAKE_MAGIC)
2104 pmctrl_bits |= MAGICPKT;
2105 if (wol->wolopts & WAKE_PHY)
2106 pmctrl_bits |= LINKON;
2108 sw32(pmctrl, pmctrl_bits);
2110 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2112 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2113 if (netif_msg_wol(sis_priv))
2114 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2119 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2121 struct sis900_private *sp = netdev_priv(net_dev);
2122 void __iomem *ioaddr = sp->ioaddr;
2125 pmctrl_bits = sr32(pmctrl);
2126 if (pmctrl_bits & MAGICPKT)
2127 wol->wolopts |= WAKE_MAGIC;
2128 if (pmctrl_bits & LINKON)
2129 wol->wolopts |= WAKE_PHY;
2131 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2134 static const struct ethtool_ops sis900_ethtool_ops = {
2135 .get_drvinfo = sis900_get_drvinfo,
2136 .get_msglevel = sis900_get_msglevel,
2137 .set_msglevel = sis900_set_msglevel,
2138 .get_link = sis900_get_link,
2139 .get_settings = sis900_get_settings,
2140 .set_settings = sis900_set_settings,
2141 .nway_reset = sis900_nway_reset,
2142 .get_wol = sis900_get_wol,
2143 .set_wol = sis900_set_wol
2147 * mii_ioctl - process MII i/o control command
2148 * @net_dev: the net device to command for
2149 * @rq: parameter for command
2150 * @cmd: the i/o command
2152 * Process MII command like read/write MII register
2155 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2157 struct sis900_private *sis_priv = netdev_priv(net_dev);
2158 struct mii_ioctl_data *data = if_mii(rq);
2161 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2162 data->phy_id = sis_priv->mii->phy_addr;
2165 case SIOCGMIIREG: /* Read MII PHY register. */
2166 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2169 case SIOCSMIIREG: /* Write MII PHY register. */
2170 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2178 * sis900_set_config - Set media type by net_device.set_config
2179 * @dev: the net device for media type change
2180 * @map: ifmap passed by ifconfig
2182 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2183 * we support only port changes. All other runtime configuration
2184 * changes will be ignored
2187 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2189 struct sis900_private *sis_priv = netdev_priv(dev);
2190 struct mii_phy *mii_phy = sis_priv->mii;
2194 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2195 /* we switch on the ifmap->port field. I couldn't find anything
2196 * like a definition or standard for the values of that field.
2197 * I think the meaning of those values is device specific. But
2198 * since I would like to change the media type via the ifconfig
2199 * command I use the definition from linux/netdevice.h
2200 * (which seems to be different from the ifport(pcmcia) definition) */
2202 case IF_PORT_UNKNOWN: /* use auto here */
2203 dev->if_port = map->port;
2204 /* we are going to change the media type, so the Link
2205 * will be temporary down and we need to reflect that
2206 * here. When the Link comes up again, it will be
2207 * sensed by the sis_timer procedure, which also does
2208 * all the rest for us */
2209 netif_carrier_off(dev);
2211 /* read current state */
2212 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2214 /* enable auto negotiation and reset the negotioation
2215 * (I don't really know what the auto negatiotiation
2216 * reset really means, but it sounds for me right to
2218 mdio_write(dev, mii_phy->phy_addr,
2219 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2223 case IF_PORT_10BASET: /* 10BaseT */
2224 dev->if_port = map->port;
2226 /* we are going to change the media type, so the Link
2227 * will be temporary down and we need to reflect that
2228 * here. When the Link comes up again, it will be
2229 * sensed by the sis_timer procedure, which also does
2230 * all the rest for us */
2231 netif_carrier_off(dev);
2233 /* set Speed to 10Mbps */
2234 /* read current state */
2235 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2237 /* disable auto negotiation and force 10MBit mode*/
2238 mdio_write(dev, mii_phy->phy_addr,
2239 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2243 case IF_PORT_100BASET: /* 100BaseT */
2244 case IF_PORT_100BASETX: /* 100BaseTx */
2245 dev->if_port = map->port;
2247 /* we are going to change the media type, so the Link
2248 * will be temporary down and we need to reflect that
2249 * here. When the Link comes up again, it will be
2250 * sensed by the sis_timer procedure, which also does
2251 * all the rest for us */
2252 netif_carrier_off(dev);
2254 /* set Speed to 100Mbps */
2255 /* disable auto negotiation and enable 100MBit Mode */
2256 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2257 mdio_write(dev, mii_phy->phy_addr,
2258 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2263 case IF_PORT_10BASE2: /* 10Base2 */
2264 case IF_PORT_AUI: /* AUI */
2265 case IF_PORT_100BASEFX: /* 100BaseFx */
2266 /* These Modes are not supported (are they?)*/
2278 * sis900_mcast_bitnr - compute hashtable index
2279 * @addr: multicast address
2280 * @revision: revision id of chip
2282 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2283 * hash table, which makes this function a little bit different from other drivers
2284 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2285 * multicast hash table.
2288 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2291 u32 crc = ether_crc(6, addr);
2293 /* leave 8 or 7 most siginifant bits */
2294 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2295 return (int)(crc >> 24);
2297 return (int)(crc >> 25);
2301 * set_rx_mode - Set SiS900 receive mode
2302 * @net_dev: the net device to be set
2304 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2305 * And set the appropriate multicast filter.
2306 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2309 static void set_rx_mode(struct net_device *net_dev)
2311 struct sis900_private *sis_priv = netdev_priv(net_dev);
2312 void __iomem *ioaddr = sis_priv->ioaddr;
2313 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2314 int i, table_entries;
2317 /* 635 Hash Table entries = 256(2^16) */
2318 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2319 (sis_priv->chipset_rev == SIS900B_900_REV))
2324 if (net_dev->flags & IFF_PROMISC) {
2325 /* Accept any kinds of packets */
2326 rx_mode = RFPromiscuous;
2327 for (i = 0; i < table_entries; i++)
2328 mc_filter[i] = 0xffff;
2329 } else if ((netdev_mc_count(net_dev) > multicast_filter_limit) ||
2330 (net_dev->flags & IFF_ALLMULTI)) {
2331 /* too many multicast addresses or accept all multicast packet */
2332 rx_mode = RFAAB | RFAAM;
2333 for (i = 0; i < table_entries; i++)
2334 mc_filter[i] = 0xffff;
2336 /* Accept Broadcast packet, destination address matchs our
2337 * MAC address, use Receive Filter to reject unwanted MCAST
2339 struct netdev_hw_addr *ha;
2342 netdev_for_each_mc_addr(ha, net_dev) {
2343 unsigned int bit_nr;
2345 bit_nr = sis900_mcast_bitnr(ha->addr,
2346 sis_priv->chipset_rev);
2347 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2351 /* update Multicast Hash Table in Receive Filter */
2352 for (i = 0; i < table_entries; i++) {
2353 /* why plus 0x04 ??, That makes the correct value for hash table. */
2354 sw32(rfcr, (u32)(0x00000004 + i) << RFADDR_shift);
2355 sw32(rfdr, mc_filter[i]);
2358 sw32(rfcr, RFEN | rx_mode);
2360 /* sis900 is capable of looping back packets at MAC level for
2361 * debugging purpose */
2362 if (net_dev->flags & IFF_LOOPBACK) {
2364 /* We must disable Tx/Rx before setting loopback mode */
2365 cr_saved = sr32(cr);
2366 sw32(cr, cr_saved | TxDIS | RxDIS);
2367 /* enable loopback */
2368 sw32(txcfg, sr32(txcfg) | TxMLB);
2369 sw32(rxcfg, sr32(rxcfg) | RxATX);
2376 * sis900_reset - Reset sis900 MAC
2377 * @net_dev: the net device to reset
2379 * reset sis900 MAC and wait until finished
2380 * reset through command register
2381 * change backoff algorithm for 900B0 & 635 M/B
2384 static void sis900_reset(struct net_device *net_dev)
2386 struct sis900_private *sis_priv = netdev_priv(net_dev);
2387 void __iomem *ioaddr = sis_priv->ioaddr;
2388 u32 status = TxRCMP | RxRCMP;
2395 sw32(cr, RxRESET | TxRESET | RESET | sr32(cr));
2397 /* Check that the chip has finished the reset. */
2398 for (i = 0; status && (i < 1000); i++)
2399 status ^= sr32(isr) & status;
2401 if (sis_priv->chipset_rev >= SIS635A_900_REV ||
2402 sis_priv->chipset_rev == SIS900B_900_REV)
2403 sw32(cfg, PESEL | RND_CNT);
2409 * sis900_remove - Remove sis900 device
2410 * @pci_dev: the pci device to be removed
2412 * remove and release SiS900 net device
2415 static void sis900_remove(struct pci_dev *pci_dev)
2417 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2418 struct sis900_private *sis_priv = netdev_priv(net_dev);
2420 unregister_netdev(net_dev);
2422 while (sis_priv->first_mii) {
2423 struct mii_phy *phy = sis_priv->first_mii;
2425 sis_priv->first_mii = phy->next;
2429 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2430 sis_priv->rx_ring_dma);
2431 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2432 sis_priv->tx_ring_dma);
2433 pci_iounmap(pci_dev, sis_priv->ioaddr);
2434 free_netdev(net_dev);
2435 pci_release_regions(pci_dev);
2436 pci_set_drvdata(pci_dev, NULL);
2441 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2443 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2444 struct sis900_private *sis_priv = netdev_priv(net_dev);
2445 void __iomem *ioaddr = sis_priv->ioaddr;
2447 if(!netif_running(net_dev))
2450 netif_stop_queue(net_dev);
2451 netif_device_detach(net_dev);
2453 /* Stop the chip's Tx and Rx Status Machine */
2454 sw32(cr, RxDIS | TxDIS | sr32(cr));
2456 pci_set_power_state(pci_dev, PCI_D3hot);
2457 pci_save_state(pci_dev);
2462 static int sis900_resume(struct pci_dev *pci_dev)
2464 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2465 struct sis900_private *sis_priv = netdev_priv(net_dev);
2466 void __iomem *ioaddr = sis_priv->ioaddr;
2468 if(!netif_running(net_dev))
2470 pci_restore_state(pci_dev);
2471 pci_set_power_state(pci_dev, PCI_D0);
2473 sis900_init_rxfilter(net_dev);
2475 sis900_init_tx_ring(net_dev);
2476 sis900_init_rx_ring(net_dev);
2478 set_rx_mode(net_dev);
2480 netif_device_attach(net_dev);
2481 netif_start_queue(net_dev);
2483 /* Workaround for EDB */
2484 sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2486 /* Enable all known interrupts by setting the interrupt mask. */
2487 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE);
2488 sw32(cr, RxENA | sr32(cr));
2491 sis900_check_mode(net_dev, sis_priv->mii);
2495 #endif /* CONFIG_PM */
2497 static struct pci_driver sis900_pci_driver = {
2498 .name = SIS900_MODULE_NAME,
2499 .id_table = sis900_pci_tbl,
2500 .probe = sis900_probe,
2501 .remove = sis900_remove,
2503 .suspend = sis900_suspend,
2504 .resume = sis900_resume,
2505 #endif /* CONFIG_PM */
2508 static int __init sis900_init_module(void)
2510 /* when a module, this is printed whether or not devices are found in probe */
2515 return pci_register_driver(&sis900_pci_driver);
2518 static void __exit sis900_cleanup_module(void)
2520 pci_unregister_driver(&sis900_pci_driver);
2523 module_init(sis900_init_module);
2524 module_exit(sis900_cleanup_module);