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 and
251 * @net_dev->perm_addr.
254 static int sis900_get_mac_addr(struct pci_dev *pci_dev,
255 struct net_device *net_dev)
257 struct sis900_private *sis_priv = netdev_priv(net_dev);
258 void __iomem *ioaddr = sis_priv->ioaddr;
262 /* check to see if we have sane EEPROM */
263 signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
264 if (signature == 0xffff || signature == 0x0000) {
265 printk (KERN_WARNING "%s: Error EERPOM read %x\n",
266 pci_name(pci_dev), signature);
270 /* get MAC address from EEPROM */
271 for (i = 0; i < 3; i++)
272 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
274 /* Store MAC Address in perm_addr */
275 memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
281 * sis630e_get_mac_addr - Get MAC address for SiS630E model
282 * @pci_dev: the sis900 pci device
283 * @net_dev: the net device to get address for
285 * SiS630E model, use APC CMOS RAM to store MAC address.
286 * APC CMOS RAM is accessed through ISA bridge.
287 * MAC address is read into @net_dev->dev_addr and
288 * @net_dev->perm_addr.
291 static int sis630e_get_mac_addr(struct pci_dev *pci_dev,
292 struct net_device *net_dev)
294 struct pci_dev *isa_bridge = NULL;
298 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
300 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
302 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
306 pci_read_config_byte(isa_bridge, 0x48, ®);
307 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
309 for (i = 0; i < 6; i++) {
310 outb(0x09 + i, 0x70);
311 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
314 /* Store MAC Address in perm_addr */
315 memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
317 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
318 pci_dev_put(isa_bridge);
325 * sis635_get_mac_addr - Get MAC address for SIS635 model
326 * @pci_dev: the sis900 pci device
327 * @net_dev: the net device to get address for
329 * SiS635 model, set MAC Reload Bit to load Mac address from APC
330 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
331 * @net_dev->dev_addr and @net_dev->perm_addr.
334 static int sis635_get_mac_addr(struct pci_dev *pci_dev,
335 struct net_device *net_dev)
337 struct sis900_private *sis_priv = netdev_priv(net_dev);
338 void __iomem *ioaddr = sis_priv->ioaddr;
342 rfcrSave = sr32(rfcr);
344 sw32(cr, rfcrSave | RELOAD);
347 /* disable packet filtering before setting filter */
348 sw32(rfcr, rfcrSave & ~RFEN);
350 /* load MAC addr to filter data register */
351 for (i = 0 ; i < 3 ; i++) {
352 sw32(rfcr, (i << RFADDR_shift));
353 *( ((u16 *)net_dev->dev_addr) + i) = sr16(rfdr);
356 /* Store MAC Address in perm_addr */
357 memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
359 /* enable packet filtering */
360 sw32(rfcr, rfcrSave | RFEN);
366 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
367 * @pci_dev: the sis900 pci device
368 * @net_dev: the net device to get address for
370 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
372 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
373 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
374 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
375 * EEDONE signal to refuse EEPROM access by LAN.
376 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
377 * The signature field in SiS962 or SiS963 spec is meaningless.
378 * MAC address is read into @net_dev->dev_addr and @net_dev->perm_addr.
381 static int sis96x_get_mac_addr(struct pci_dev *pci_dev,
382 struct net_device *net_dev)
384 struct sis900_private *sis_priv = netdev_priv(net_dev);
385 void __iomem *ioaddr = sis_priv->ioaddr;
389 for (wait = 0; wait < 2000; wait++) {
390 if (sr32(mear) & EEGNT) {
391 u16 *mac = (u16 *)net_dev->dev_addr;
394 /* get MAC address from EEPROM */
395 for (i = 0; i < 3; i++)
396 mac[i] = read_eeprom(ioaddr, i + EEPROMMACAddr);
398 /* Store MAC Address in perm_addr */
399 memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
410 static const struct net_device_ops sis900_netdev_ops = {
411 .ndo_open = sis900_open,
412 .ndo_stop = sis900_close,
413 .ndo_start_xmit = sis900_start_xmit,
414 .ndo_set_config = sis900_set_config,
415 .ndo_set_rx_mode = set_rx_mode,
416 .ndo_change_mtu = eth_change_mtu,
417 .ndo_validate_addr = eth_validate_addr,
418 .ndo_set_mac_address = eth_mac_addr,
419 .ndo_do_ioctl = mii_ioctl,
420 .ndo_tx_timeout = sis900_tx_timeout,
421 #ifdef CONFIG_NET_POLL_CONTROLLER
422 .ndo_poll_controller = sis900_poll,
427 * sis900_probe - Probe for sis900 device
428 * @pci_dev: the sis900 pci device
429 * @pci_id: the pci device ID
431 * Check and probe sis900 net device for @pci_dev.
432 * Get mac address according to the chip revision,
433 * and assign SiS900-specific entries in the device structure.
434 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
437 static int sis900_probe(struct pci_dev *pci_dev,
438 const struct pci_device_id *pci_id)
440 struct sis900_private *sis_priv;
441 struct net_device *net_dev;
445 void __iomem *ioaddr;
447 const char *card_name = card_names[pci_id->driver_data];
448 const char *dev_name = pci_name(pci_dev);
450 /* when built into the kernel, we only print version if device is found */
452 static int printed_version;
453 if (!printed_version++)
457 /* setup various bits in PCI command register */
458 ret = pci_enable_device(pci_dev);
461 i = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
463 printk(KERN_ERR "sis900.c: architecture does not support "
464 "32bit PCI busmaster DMA\n");
468 pci_set_master(pci_dev);
470 net_dev = alloc_etherdev(sizeof(struct sis900_private));
473 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
475 /* We do a request_region() to register /proc/ioports info. */
476 ret = pci_request_regions(pci_dev, "sis900");
481 ioaddr = pci_iomap(pci_dev, 0, 0);
484 goto err_out_cleardev;
487 sis_priv = netdev_priv(net_dev);
488 sis_priv->ioaddr = ioaddr;
489 sis_priv->pci_dev = pci_dev;
490 spin_lock_init(&sis_priv->lock);
492 pci_set_drvdata(pci_dev, net_dev);
494 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
499 sis_priv->tx_ring = ring_space;
500 sis_priv->tx_ring_dma = ring_dma;
502 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
507 sis_priv->rx_ring = ring_space;
508 sis_priv->rx_ring_dma = ring_dma;
510 /* The SiS900-specific entries in the device structure. */
511 net_dev->netdev_ops = &sis900_netdev_ops;
512 net_dev->watchdog_timeo = TX_TIMEOUT;
513 net_dev->ethtool_ops = &sis900_ethtool_ops;
515 if (sis900_debug > 0)
516 sis_priv->msg_enable = sis900_debug;
518 sis_priv->msg_enable = SIS900_DEF_MSG;
520 sis_priv->mii_info.dev = net_dev;
521 sis_priv->mii_info.mdio_read = mdio_read;
522 sis_priv->mii_info.mdio_write = mdio_write;
523 sis_priv->mii_info.phy_id_mask = 0x1f;
524 sis_priv->mii_info.reg_num_mask = 0x1f;
526 /* Get Mac address according to the chip revision */
527 sis_priv->chipset_rev = pci_dev->revision;
528 if(netif_msg_probe(sis_priv))
529 printk(KERN_DEBUG "%s: detected revision %2.2x, "
530 "trying to get MAC address...\n",
531 dev_name, sis_priv->chipset_rev);
534 if (sis_priv->chipset_rev == SIS630E_900_REV)
535 ret = sis630e_get_mac_addr(pci_dev, net_dev);
536 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
537 ret = sis635_get_mac_addr(pci_dev, net_dev);
538 else if (sis_priv->chipset_rev == SIS96x_900_REV)
539 ret = sis96x_get_mac_addr(pci_dev, net_dev);
541 ret = sis900_get_mac_addr(pci_dev, net_dev);
543 if (!ret || !is_valid_ether_addr(net_dev->dev_addr)) {
544 eth_hw_addr_random(net_dev);
545 printk(KERN_WARNING "%s: Unreadable or invalid MAC address,"
546 "using random generated one\n", dev_name);
549 /* 630ET : set the mii access mode as software-mode */
550 if (sis_priv->chipset_rev == SIS630ET_900_REV)
551 sw32(cr, ACCESSMODE | sr32(cr));
553 /* probe for mii transceiver */
554 if (sis900_mii_probe(net_dev) == 0) {
555 printk(KERN_WARNING "%s: Error probing MII device.\n",
561 /* save our host bridge revision */
562 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
564 sis_priv->host_bridge_rev = dev->revision;
568 ret = register_netdev(net_dev);
572 /* print some information about our NIC */
573 printk(KERN_INFO "%s: %s at 0x%p, IRQ %d, %pM\n",
574 net_dev->name, card_name, ioaddr, pci_dev->irq,
577 /* Detect Wake on Lan support */
578 ret = (sr32(CFGPMC) & PMESP) >> 27;
579 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
580 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
585 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
586 sis_priv->rx_ring_dma);
588 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
589 sis_priv->tx_ring_dma);
591 pci_iounmap(pci_dev, ioaddr);
593 pci_set_drvdata(pci_dev, NULL);
594 pci_release_regions(pci_dev);
596 free_netdev(net_dev);
601 * sis900_mii_probe - Probe MII PHY for sis900
602 * @net_dev: the net device to probe for
604 * Search for total of 32 possible mii phy addresses.
605 * Identify and set current phy if found one,
606 * return error if it failed to found.
609 static int sis900_mii_probe(struct net_device *net_dev)
611 struct sis900_private *sis_priv = netdev_priv(net_dev);
612 const char *dev_name = pci_name(sis_priv->pci_dev);
613 u16 poll_bit = MII_STAT_LINK, status = 0;
614 unsigned long timeout = jiffies + 5 * HZ;
617 sis_priv->mii = NULL;
619 /* search for total of 32 possible mii phy addresses */
620 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
621 struct mii_phy * mii_phy = NULL;
626 for(i = 0; i < 2; i++)
627 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
629 if (mii_status == 0xffff || mii_status == 0x0000) {
630 if (netif_msg_probe(sis_priv))
631 printk(KERN_DEBUG "%s: MII at address %d"
637 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
638 mii_phy = sis_priv->first_mii;
642 mii_phy = mii_phy->next;
648 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
649 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
650 mii_phy->phy_addr = phy_addr;
651 mii_phy->status = mii_status;
652 mii_phy->next = sis_priv->mii;
653 sis_priv->mii = mii_phy;
654 sis_priv->first_mii = mii_phy;
656 for (i = 0; mii_chip_table[i].phy_id1; i++)
657 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
658 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
659 mii_phy->phy_types = mii_chip_table[i].phy_types;
660 if (mii_chip_table[i].phy_types == MIX)
662 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
663 printk(KERN_INFO "%s: %s transceiver found "
666 mii_chip_table[i].name,
671 if( !mii_chip_table[i].phy_id1 ) {
672 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
674 mii_phy->phy_types = UNKNOWN;
678 if (sis_priv->mii == NULL) {
679 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
683 /* select default PHY for mac */
684 sis_priv->mii = NULL;
685 sis900_default_phy( net_dev );
687 /* Reset phy if default phy is internal sis900 */
688 if ((sis_priv->mii->phy_id0 == 0x001D) &&
689 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
690 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
692 /* workaround for ICS1893 PHY */
693 if ((sis_priv->mii->phy_id0 == 0x0015) &&
694 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
695 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
697 if(status & MII_STAT_LINK){
701 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
702 if (time_after_eq(jiffies, timeout)) {
703 printk(KERN_WARNING "%s: reset phy and link down now\n",
710 if (sis_priv->chipset_rev == SIS630E_900_REV) {
711 /* SiS 630E has some bugs on default value of PHY registers */
712 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
713 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
714 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
715 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
716 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
719 if (sis_priv->mii->status & MII_STAT_LINK)
720 netif_carrier_on(net_dev);
722 netif_carrier_off(net_dev);
728 * sis900_default_phy - Select default PHY for sis900 mac.
729 * @net_dev: the net device to probe for
731 * Select first detected PHY with link as default.
732 * If no one is link on, select PHY whose types is HOME as default.
733 * If HOME doesn't exist, select LAN.
736 static u16 sis900_default_phy(struct net_device * net_dev)
738 struct sis900_private *sis_priv = netdev_priv(net_dev);
739 struct mii_phy *phy = NULL, *phy_home = NULL,
740 *default_phy = NULL, *phy_lan = NULL;
743 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
744 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
745 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
747 /* Link ON & Not select default PHY & not ghost PHY */
748 if ((status & MII_STAT_LINK) && !default_phy &&
749 (phy->phy_types != UNKNOWN))
752 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
753 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
754 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
755 if (phy->phy_types == HOME)
757 else if(phy->phy_types == LAN)
762 if (!default_phy && phy_home)
763 default_phy = phy_home;
764 else if (!default_phy && phy_lan)
765 default_phy = phy_lan;
766 else if (!default_phy)
767 default_phy = sis_priv->first_mii;
769 if (sis_priv->mii != default_phy) {
770 sis_priv->mii = default_phy;
771 sis_priv->cur_phy = default_phy->phy_addr;
772 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
773 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
776 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
778 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
779 status &= (~MII_CNTL_ISOLATE);
781 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
782 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
783 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
790 * sis900_set_capability - set the media capability of network adapter.
791 * @net_dev : the net device to probe for
794 * Set the media capability of network adapter according to
795 * mii status register. It's necessary before auto-negotiate.
798 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
803 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
804 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
806 cap = MII_NWAY_CSMA_CD |
807 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
808 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
809 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
810 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
812 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
816 /* Delay between EEPROM clock transitions. */
817 #define eeprom_delay() sr32(mear)
820 * read_eeprom - Read Serial EEPROM
821 * @ioaddr: base i/o address
822 * @location: the EEPROM location to read
824 * Read Serial EEPROM through EEPROM Access Register.
825 * Note that location is in word (16 bits) unit
828 static u16 read_eeprom(void __iomem *ioaddr, int location)
830 u32 read_cmd = location | EEread;
839 /* Shift the read command (9) bits out. */
840 for (i = 8; i >= 0; i--) {
841 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
845 sw32(mear, dataval | EECLK);
851 /* read the 16-bits data in */
852 for (i = 16; i > 0; i--) {
855 sw32(mear, EECS | EECLK);
857 retval = (retval << 1) | ((sr32(mear) & EEDO) ? 1 : 0);
861 /* Terminate the EEPROM access. */
868 /* Read and write the MII management registers using software-generated
869 serial MDIO protocol. Note that the command bits and data bits are
870 send out separately */
871 #define mdio_delay() sr32(mear)
873 static void mdio_idle(struct sis900_private *sp)
875 void __iomem *ioaddr = sp->ioaddr;
877 sw32(mear, MDIO | MDDIR);
879 sw32(mear, MDIO | MDDIR | MDC);
882 /* Synchronize the MII management interface by shifting 32 one bits out. */
883 static void mdio_reset(struct sis900_private *sp)
885 void __iomem *ioaddr = sp->ioaddr;
888 for (i = 31; i >= 0; i--) {
889 sw32(mear, MDDIR | MDIO);
891 sw32(mear, MDDIR | MDIO | MDC);
897 * mdio_read - read MII PHY register
898 * @net_dev: the net device to read
899 * @phy_id: the phy address to read
900 * @location: the phy regiester id to read
902 * Read MII registers through MDIO and MDC
903 * using MDIO management frame structure and protocol(defined by ISO/IEC).
904 * Please see SiS7014 or ICS spec
907 static int mdio_read(struct net_device *net_dev, int phy_id, int location)
909 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
910 struct sis900_private *sp = netdev_priv(net_dev);
911 void __iomem *ioaddr = sp->ioaddr;
918 for (i = 15; i >= 0; i--) {
919 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
923 sw32(mear, dataval | MDC);
927 /* Read the 16 data bits. */
928 for (i = 16; i > 0; i--) {
931 retval = (retval << 1) | ((sr32(mear) & MDIO) ? 1 : 0);
941 * mdio_write - write MII PHY register
942 * @net_dev: the net device to write
943 * @phy_id: the phy address to write
944 * @location: the phy regiester id to write
945 * @value: the register value to write with
947 * Write MII registers with @value through MDIO and MDC
948 * using MDIO management frame structure and protocol(defined by ISO/IEC)
949 * please see SiS7014 or ICS spec
952 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
955 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
956 struct sis900_private *sp = netdev_priv(net_dev);
957 void __iomem *ioaddr = sp->ioaddr;
963 /* Shift the command bits out. */
964 for (i = 15; i >= 0; i--) {
965 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
969 sw8(mear, dataval | MDC);
974 /* Shift the value bits out. */
975 for (i = 15; i >= 0; i--) {
976 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
980 sw32(mear, dataval | MDC);
985 /* Clear out extra bits. */
986 for (i = 2; i > 0; i--) {
997 * sis900_reset_phy - reset sis900 mii phy.
998 * @net_dev: the net device to write
999 * @phy_addr: default phy address
1001 * Some specific phy can't work properly without reset.
1002 * This function will be called during initialization and
1003 * link status change from ON to DOWN.
1006 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
1011 for (i = 0; i < 2; i++)
1012 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1014 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
1019 #ifdef CONFIG_NET_POLL_CONTROLLER
1021 * Polling 'interrupt' - used by things like netconsole to send skbs
1022 * without having to re-enable interrupts. It's not called while
1023 * the interrupt routine is executing.
1025 static void sis900_poll(struct net_device *dev)
1027 struct sis900_private *sp = netdev_priv(dev);
1028 const int irq = sp->pci_dev->irq;
1031 sis900_interrupt(irq, dev);
1037 * sis900_open - open sis900 device
1038 * @net_dev: the net device to open
1040 * Do some initialization and start net interface.
1041 * enable interrupts and set sis900 timer.
1045 sis900_open(struct net_device *net_dev)
1047 struct sis900_private *sis_priv = netdev_priv(net_dev);
1048 void __iomem *ioaddr = sis_priv->ioaddr;
1051 /* Soft reset the chip. */
1052 sis900_reset(net_dev);
1054 /* Equalizer workaround Rule */
1055 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1057 ret = request_irq(sis_priv->pci_dev->irq, sis900_interrupt, IRQF_SHARED,
1058 net_dev->name, net_dev);
1062 sis900_init_rxfilter(net_dev);
1064 sis900_init_tx_ring(net_dev);
1065 sis900_init_rx_ring(net_dev);
1067 set_rx_mode(net_dev);
1069 netif_start_queue(net_dev);
1071 /* Workaround for EDB */
1072 sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1074 /* Enable all known interrupts by setting the interrupt mask. */
1075 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE);
1076 sw32(cr, RxENA | sr32(cr));
1079 sis900_check_mode(net_dev, sis_priv->mii);
1081 /* Set the timer to switch to check for link beat and perhaps switch
1082 to an alternate media type. */
1083 init_timer(&sis_priv->timer);
1084 sis_priv->timer.expires = jiffies + HZ;
1085 sis_priv->timer.data = (unsigned long)net_dev;
1086 sis_priv->timer.function = sis900_timer;
1087 add_timer(&sis_priv->timer);
1093 * sis900_init_rxfilter - Initialize the Rx filter
1094 * @net_dev: the net device to initialize for
1096 * Set receive filter address to our MAC address
1097 * and enable packet filtering.
1101 sis900_init_rxfilter (struct net_device * net_dev)
1103 struct sis900_private *sis_priv = netdev_priv(net_dev);
1104 void __iomem *ioaddr = sis_priv->ioaddr;
1108 rfcrSave = sr32(rfcr);
1110 /* disable packet filtering before setting filter */
1111 sw32(rfcr, rfcrSave & ~RFEN);
1113 /* load MAC addr to filter data register */
1114 for (i = 0 ; i < 3 ; i++) {
1115 u32 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1117 sw32(rfcr, i << RFADDR_shift);
1120 if (netif_msg_hw(sis_priv)) {
1121 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1122 net_dev->name, i, sr32(rfdr));
1126 /* enable packet filtering */
1127 sw32(rfcr, rfcrSave | RFEN);
1131 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1132 * @net_dev: the net device to initialize for
1134 * Initialize the Tx descriptor ring,
1138 sis900_init_tx_ring(struct net_device *net_dev)
1140 struct sis900_private *sis_priv = netdev_priv(net_dev);
1141 void __iomem *ioaddr = sis_priv->ioaddr;
1144 sis_priv->tx_full = 0;
1145 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1147 for (i = 0; i < NUM_TX_DESC; i++) {
1148 sis_priv->tx_skbuff[i] = NULL;
1150 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1151 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1152 sis_priv->tx_ring[i].cmdsts = 0;
1153 sis_priv->tx_ring[i].bufptr = 0;
1156 /* load Transmit Descriptor Register */
1157 sw32(txdp, sis_priv->tx_ring_dma);
1158 if (netif_msg_hw(sis_priv))
1159 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1160 net_dev->name, sr32(txdp));
1164 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1165 * @net_dev: the net device to initialize for
1167 * Initialize the Rx descriptor ring,
1168 * and pre-allocate recevie buffers (socket buffer)
1172 sis900_init_rx_ring(struct net_device *net_dev)
1174 struct sis900_private *sis_priv = netdev_priv(net_dev);
1175 void __iomem *ioaddr = sis_priv->ioaddr;
1178 sis_priv->cur_rx = 0;
1179 sis_priv->dirty_rx = 0;
1181 /* init RX descriptor */
1182 for (i = 0; i < NUM_RX_DESC; i++) {
1183 sis_priv->rx_skbuff[i] = NULL;
1185 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1186 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1187 sis_priv->rx_ring[i].cmdsts = 0;
1188 sis_priv->rx_ring[i].bufptr = 0;
1191 /* allocate sock buffers */
1192 for (i = 0; i < NUM_RX_DESC; i++) {
1193 struct sk_buff *skb;
1195 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1196 /* not enough memory for skbuff, this makes a "hole"
1197 on the buffer ring, it is not clear how the
1198 hardware will react to this kind of degenerated
1202 sis_priv->rx_skbuff[i] = skb;
1203 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1204 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
1205 skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1207 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1209 /* load Receive Descriptor Register */
1210 sw32(rxdp, sis_priv->rx_ring_dma);
1211 if (netif_msg_hw(sis_priv))
1212 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1213 net_dev->name, sr32(rxdp));
1217 * sis630_set_eq - set phy equalizer value for 630 LAN
1218 * @net_dev: the net device to set equalizer value
1219 * @revision: 630 LAN revision number
1221 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1222 * PHY register 14h(Test)
1223 * Bit 14: 0 -- Automatically detect (default)
1224 * 1 -- Manually set Equalizer filter
1225 * Bit 13: 0 -- (Default)
1226 * 1 -- Speed up convergence of equalizer setting
1227 * Bit 9 : 0 -- (Default)
1228 * 1 -- Disable Baseline Wander
1229 * Bit 3~7 -- Equalizer filter setting
1230 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1231 * Then calculate equalizer value
1232 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1233 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1234 * Calculate Equalizer value:
1235 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-detect proper equalizer value.
1236 * When the equalizer is stable, this value is not a fixed value. It will be within
1237 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1238 * 0 <= max <= 4 --> set equalizer to max
1239 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1240 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1243 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1245 struct sis900_private *sis_priv = netdev_priv(net_dev);
1246 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1249 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1250 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1253 if (netif_carrier_ok(net_dev)) {
1254 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1255 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1256 (0x2200 | reg14h) & 0xBFFF);
1257 for (i=0; i < maxcount; i++) {
1258 eq_value = (0x00F8 & mdio_read(net_dev,
1259 sis_priv->cur_phy, MII_RESV)) >> 3;
1261 max_value=min_value=eq_value;
1262 max_value = (eq_value > max_value) ?
1263 eq_value : max_value;
1264 min_value = (eq_value < min_value) ?
1265 eq_value : min_value;
1267 /* 630E rule to determine the equalizer value */
1268 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1269 revision == SIS630ET_900_REV) {
1271 eq_value = max_value;
1272 else if (max_value >= 5 && max_value < 15)
1273 eq_value = (max_value == min_value) ?
1274 max_value+2 : max_value+1;
1275 else if (max_value >= 15)
1276 eq_value=(max_value == min_value) ?
1277 max_value+6 : max_value+5;
1279 /* 630B0&B1 rule to determine the equalizer value */
1280 if (revision == SIS630A_900_REV &&
1281 (sis_priv->host_bridge_rev == SIS630B0 ||
1282 sis_priv->host_bridge_rev == SIS630B1)) {
1286 eq_value = (max_value + min_value + 1)/2;
1288 /* write equalizer value and setting */
1289 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1290 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1291 reg14h = (reg14h | 0x6000) & 0xFDFF;
1292 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1294 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1295 if (revision == SIS630A_900_REV &&
1296 (sis_priv->host_bridge_rev == SIS630B0 ||
1297 sis_priv->host_bridge_rev == SIS630B1))
1298 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1299 (reg14h | 0x2200) & 0xBFFF);
1301 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1302 (reg14h | 0x2000) & 0xBFFF);
1307 * sis900_timer - sis900 timer routine
1308 * @data: pointer to sis900 net device
1310 * On each timer ticks we check two things,
1311 * link status (ON/OFF) and link mode (10/100/Full/Half)
1314 static void sis900_timer(unsigned long data)
1316 struct net_device *net_dev = (struct net_device *)data;
1317 struct sis900_private *sis_priv = netdev_priv(net_dev);
1318 struct mii_phy *mii_phy = sis_priv->mii;
1319 static const int next_tick = 5*HZ;
1322 if (!sis_priv->autong_complete){
1323 int uninitialized_var(speed), duplex = 0;
1325 sis900_read_mode(net_dev, &speed, &duplex);
1327 sis900_set_mode(sis_priv, speed, duplex);
1328 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1329 netif_start_queue(net_dev);
1332 sis_priv->timer.expires = jiffies + HZ;
1333 add_timer(&sis_priv->timer);
1337 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1338 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1340 /* Link OFF -> ON */
1341 if (!netif_carrier_ok(net_dev)) {
1343 /* Search for new PHY */
1344 status = sis900_default_phy(net_dev);
1345 mii_phy = sis_priv->mii;
1347 if (status & MII_STAT_LINK){
1348 sis900_check_mode(net_dev, mii_phy);
1349 netif_carrier_on(net_dev);
1352 /* Link ON -> OFF */
1353 if (!(status & MII_STAT_LINK)){
1354 netif_carrier_off(net_dev);
1355 if(netif_msg_link(sis_priv))
1356 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1358 /* Change mode issue */
1359 if ((mii_phy->phy_id0 == 0x001D) &&
1360 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1361 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1363 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1369 sis_priv->timer.expires = jiffies + next_tick;
1370 add_timer(&sis_priv->timer);
1374 * sis900_check_mode - check the media mode for sis900
1375 * @net_dev: the net device to be checked
1376 * @mii_phy: the mii phy
1378 * Older driver gets the media mode from mii status output
1379 * register. Now we set our media capability and auto-negotiate
1380 * to get the upper bound of speed and duplex between two ends.
1381 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1382 * and autong_complete should be set to 1.
1385 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1387 struct sis900_private *sis_priv = netdev_priv(net_dev);
1388 void __iomem *ioaddr = sis_priv->ioaddr;
1391 if (mii_phy->phy_types == LAN) {
1392 sw32(cfg, ~EXD & sr32(cfg));
1393 sis900_set_capability(net_dev , mii_phy);
1394 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1396 sw32(cfg, EXD | sr32(cfg));
1397 speed = HW_SPEED_HOME;
1398 duplex = FDX_CAPABLE_HALF_SELECTED;
1399 sis900_set_mode(sis_priv, speed, duplex);
1400 sis_priv->autong_complete = 1;
1405 * sis900_set_mode - Set the media mode of mac register.
1406 * @sp: the device private data
1407 * @speed : the transmit speed to be determined
1408 * @duplex: the duplex mode to be determined
1410 * Set the media mode of mac register txcfg/rxcfg according to
1411 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1412 * bus is used instead of PCI bus. When this bit is set 1, the
1413 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1417 static void sis900_set_mode(struct sis900_private *sp, int speed, int duplex)
1419 void __iomem *ioaddr = sp->ioaddr;
1420 u32 tx_flags = 0, rx_flags = 0;
1422 if (sr32( cfg) & EDB_MASTER_EN) {
1423 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1424 (TX_FILL_THRESH << TxFILLT_shift);
1425 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1427 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1428 (TX_FILL_THRESH << TxFILLT_shift);
1429 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1432 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1433 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1434 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1436 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1437 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1440 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1441 tx_flags |= (TxCSI | TxHBI);
1445 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1446 /* Can accept Jumbo packet */
1450 sw32(txcfg, tx_flags);
1451 sw32(rxcfg, rx_flags);
1455 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1456 * @net_dev: the net device to read mode for
1457 * @phy_addr: mii phy address
1459 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1460 * autong_complete should be set to 0 when starting auto-negotiation.
1461 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1462 * sis900_timer will wait for link on again if autong_complete = 0.
1465 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1467 struct sis900_private *sis_priv = netdev_priv(net_dev);
1471 for (i = 0; i < 2; i++)
1472 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1474 if (!(status & MII_STAT_LINK)){
1475 if(netif_msg_link(sis_priv))
1476 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1477 sis_priv->autong_complete = 1;
1478 netif_carrier_off(net_dev);
1482 /* (Re)start AutoNegotiate */
1483 mdio_write(net_dev, phy_addr, MII_CONTROL,
1484 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1485 sis_priv->autong_complete = 0;
1490 * sis900_read_mode - read media mode for sis900 internal phy
1491 * @net_dev: the net device to read mode for
1492 * @speed : the transmit speed to be determined
1493 * @duplex : the duplex mode to be determined
1495 * The capability of remote end will be put in mii register autorec
1496 * after auto-negotiation. Use AND operation to get the upper bound
1497 * of speed and duplex between two ends.
1500 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1502 struct sis900_private *sis_priv = netdev_priv(net_dev);
1503 struct mii_phy *phy = sis_priv->mii;
1504 int phy_addr = sis_priv->cur_phy;
1506 u16 autoadv, autorec;
1509 for (i = 0; i < 2; i++)
1510 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1512 if (!(status & MII_STAT_LINK))
1515 /* AutoNegotiate completed */
1516 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1517 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1518 status = autoadv & autorec;
1520 *speed = HW_SPEED_10_MBPS;
1521 *duplex = FDX_CAPABLE_HALF_SELECTED;
1523 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1524 *speed = HW_SPEED_100_MBPS;
1525 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1526 *duplex = FDX_CAPABLE_FULL_SELECTED;
1528 sis_priv->autong_complete = 1;
1530 /* Workaround for Realtek RTL8201 PHY issue */
1531 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1532 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1533 *duplex = FDX_CAPABLE_FULL_SELECTED;
1534 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1535 *speed = HW_SPEED_100_MBPS;
1538 if(netif_msg_link(sis_priv))
1539 printk(KERN_INFO "%s: Media Link On %s %s-duplex\n",
1541 *speed == HW_SPEED_100_MBPS ?
1542 "100mbps" : "10mbps",
1543 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1548 * sis900_tx_timeout - sis900 transmit timeout routine
1549 * @net_dev: the net device to transmit
1551 * print transmit timeout status
1552 * disable interrupts and do some tasks
1555 static void sis900_tx_timeout(struct net_device *net_dev)
1557 struct sis900_private *sis_priv = netdev_priv(net_dev);
1558 void __iomem *ioaddr = sis_priv->ioaddr;
1559 unsigned long flags;
1562 if (netif_msg_tx_err(sis_priv)) {
1563 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x\n",
1564 net_dev->name, sr32(cr), sr32(isr));
1567 /* Disable interrupts by clearing the interrupt mask. */
1570 /* use spinlock to prevent interrupt handler accessing buffer ring */
1571 spin_lock_irqsave(&sis_priv->lock, flags);
1573 /* discard unsent packets */
1574 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1575 for (i = 0; i < NUM_TX_DESC; i++) {
1576 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1579 pci_unmap_single(sis_priv->pci_dev,
1580 sis_priv->tx_ring[i].bufptr, skb->len,
1582 dev_kfree_skb_irq(skb);
1583 sis_priv->tx_skbuff[i] = NULL;
1584 sis_priv->tx_ring[i].cmdsts = 0;
1585 sis_priv->tx_ring[i].bufptr = 0;
1586 net_dev->stats.tx_dropped++;
1589 sis_priv->tx_full = 0;
1590 netif_wake_queue(net_dev);
1592 spin_unlock_irqrestore(&sis_priv->lock, flags);
1594 net_dev->trans_start = jiffies; /* prevent tx timeout */
1596 /* load Transmit Descriptor Register */
1597 sw32(txdp, sis_priv->tx_ring_dma);
1599 /* Enable all known interrupts by setting the interrupt mask. */
1600 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE);
1604 * sis900_start_xmit - sis900 start transmit routine
1605 * @skb: socket buffer pointer to put the data being transmitted
1606 * @net_dev: the net device to transmit with
1608 * Set the transmit buffer descriptor,
1609 * and write TxENA to enable transmit state machine.
1610 * tell upper layer if the buffer is full
1614 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1616 struct sis900_private *sis_priv = netdev_priv(net_dev);
1617 void __iomem *ioaddr = sis_priv->ioaddr;
1619 unsigned long flags;
1620 unsigned int index_cur_tx, index_dirty_tx;
1621 unsigned int count_dirty_tx;
1623 /* Don't transmit data before the complete of auto-negotiation */
1624 if(!sis_priv->autong_complete){
1625 netif_stop_queue(net_dev);
1626 return NETDEV_TX_BUSY;
1629 spin_lock_irqsave(&sis_priv->lock, flags);
1631 /* Calculate the next Tx descriptor entry. */
1632 entry = sis_priv->cur_tx % NUM_TX_DESC;
1633 sis_priv->tx_skbuff[entry] = skb;
1635 /* set the transmit buffer descriptor and enable Transmit State Machine */
1636 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1637 skb->data, skb->len, PCI_DMA_TODEVICE);
1638 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1639 sw32(cr, TxENA | sr32(cr));
1641 sis_priv->cur_tx ++;
1642 index_cur_tx = sis_priv->cur_tx;
1643 index_dirty_tx = sis_priv->dirty_tx;
1645 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1648 if (index_cur_tx == index_dirty_tx) {
1649 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1650 sis_priv->tx_full = 1;
1651 netif_stop_queue(net_dev);
1652 } else if (count_dirty_tx < NUM_TX_DESC) {
1653 /* Typical path, tell upper layer that more transmission is possible */
1654 netif_start_queue(net_dev);
1656 /* buffer full, tell upper layer no more transmission */
1657 sis_priv->tx_full = 1;
1658 netif_stop_queue(net_dev);
1661 spin_unlock_irqrestore(&sis_priv->lock, flags);
1663 if (netif_msg_tx_queued(sis_priv))
1664 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1666 net_dev->name, skb->data, (int)skb->len, entry);
1668 return NETDEV_TX_OK;
1672 * sis900_interrupt - sis900 interrupt handler
1673 * @irq: the irq number
1674 * @dev_instance: the client data object
1676 * The interrupt handler does all of the Rx thread work,
1677 * and cleans up after the Tx thread
1680 static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
1682 struct net_device *net_dev = dev_instance;
1683 struct sis900_private *sis_priv = netdev_priv(net_dev);
1684 int boguscnt = max_interrupt_work;
1685 void __iomem *ioaddr = sis_priv->ioaddr;
1687 unsigned int handled = 0;
1689 spin_lock (&sis_priv->lock);
1694 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1695 /* nothing intresting happened */
1699 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1700 if (status & (RxORN | RxERR | RxOK))
1704 if (status & (TxURN | TxERR | TxIDLE))
1706 sis900_finish_xmit(net_dev);
1708 /* something strange happened !!! */
1709 if (status & HIBERR) {
1710 if(netif_msg_intr(sis_priv))
1711 printk(KERN_INFO "%s: Abnormal interrupt, "
1712 "status %#8.8x.\n", net_dev->name, status);
1715 if (--boguscnt < 0) {
1716 if(netif_msg_intr(sis_priv))
1717 printk(KERN_INFO "%s: Too much work at interrupt, "
1718 "interrupt status = %#8.8x.\n",
1719 net_dev->name, status);
1724 if(netif_msg_intr(sis_priv))
1725 printk(KERN_DEBUG "%s: exiting interrupt, "
1726 "interrupt status = 0x%#8.8x.\n",
1727 net_dev->name, sr32(isr));
1729 spin_unlock (&sis_priv->lock);
1730 return IRQ_RETVAL(handled);
1734 * sis900_rx - sis900 receive routine
1735 * @net_dev: the net device which receives data
1737 * Process receive interrupt events,
1738 * put buffer to higher layer and refill buffer pool
1739 * Note: This function is called by interrupt handler,
1740 * don't do "too much" work here
1743 static int sis900_rx(struct net_device *net_dev)
1745 struct sis900_private *sis_priv = netdev_priv(net_dev);
1746 void __iomem *ioaddr = sis_priv->ioaddr;
1747 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1748 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1751 if (netif_msg_rx_status(sis_priv))
1752 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1754 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1755 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
1757 while (rx_status & OWN) {
1758 unsigned int rx_size;
1759 unsigned int data_size;
1761 if (--rx_work_limit < 0)
1764 data_size = rx_status & DSIZE;
1765 rx_size = data_size - CRC_SIZE;
1767 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1768 /* ``TOOLONG'' flag means jumbo packet received. */
1769 if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
1770 rx_status &= (~ ((unsigned int)TOOLONG));
1773 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1774 /* corrupted packet received */
1775 if (netif_msg_rx_err(sis_priv))
1776 printk(KERN_DEBUG "%s: Corrupted packet "
1777 "received, buffer status = 0x%8.8x/%d.\n",
1778 net_dev->name, rx_status, data_size);
1779 net_dev->stats.rx_errors++;
1780 if (rx_status & OVERRUN)
1781 net_dev->stats.rx_over_errors++;
1782 if (rx_status & (TOOLONG|RUNT))
1783 net_dev->stats.rx_length_errors++;
1784 if (rx_status & (RXISERR | FAERR))
1785 net_dev->stats.rx_frame_errors++;
1786 if (rx_status & CRCERR)
1787 net_dev->stats.rx_crc_errors++;
1788 /* reset buffer descriptor state */
1789 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1791 struct sk_buff * skb;
1792 struct sk_buff * rx_skb;
1794 pci_unmap_single(sis_priv->pci_dev,
1795 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1796 PCI_DMA_FROMDEVICE);
1798 /* refill the Rx buffer, what if there is not enough
1799 * memory for new socket buffer ?? */
1800 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1802 * Not enough memory to refill the buffer
1803 * so we need to recycle the old one so
1804 * as to avoid creating a memory hole
1807 skb = sis_priv->rx_skbuff[entry];
1808 net_dev->stats.rx_dropped++;
1809 goto refill_rx_ring;
1812 /* This situation should never happen, but due to
1813 some unknown bugs, it is possible that
1814 we are working on NULL sk_buff :-( */
1815 if (sis_priv->rx_skbuff[entry] == NULL) {
1816 if (netif_msg_rx_err(sis_priv))
1817 printk(KERN_WARNING "%s: NULL pointer "
1818 "encountered in Rx ring\n"
1819 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1820 net_dev->name, sis_priv->cur_rx,
1821 sis_priv->dirty_rx);
1826 /* give the socket buffer to upper layers */
1827 rx_skb = sis_priv->rx_skbuff[entry];
1828 skb_put(rx_skb, rx_size);
1829 rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
1832 /* some network statistics */
1833 if ((rx_status & BCAST) == MCAST)
1834 net_dev->stats.multicast++;
1835 net_dev->stats.rx_bytes += rx_size;
1836 net_dev->stats.rx_packets++;
1837 sis_priv->dirty_rx++;
1839 sis_priv->rx_skbuff[entry] = skb;
1840 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1841 sis_priv->rx_ring[entry].bufptr =
1842 pci_map_single(sis_priv->pci_dev, skb->data,
1843 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1846 entry = sis_priv->cur_rx % NUM_RX_DESC;
1847 rx_status = sis_priv->rx_ring[entry].cmdsts;
1850 /* refill the Rx buffer, what if the rate of refilling is slower
1851 * than consuming ?? */
1852 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
1853 struct sk_buff *skb;
1855 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1857 if (sis_priv->rx_skbuff[entry] == NULL) {
1858 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1859 /* not enough memory for skbuff, this makes a
1860 * "hole" on the buffer ring, it is not clear
1861 * how the hardware will react to this kind
1862 * of degenerated buffer */
1863 if (netif_msg_rx_err(sis_priv))
1864 printk(KERN_INFO "%s: Memory squeeze, "
1865 "deferring packet.\n",
1867 net_dev->stats.rx_dropped++;
1870 sis_priv->rx_skbuff[entry] = skb;
1871 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1872 sis_priv->rx_ring[entry].bufptr =
1873 pci_map_single(sis_priv->pci_dev, skb->data,
1874 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1877 /* re-enable the potentially idle receive state matchine */
1878 sw32(cr , RxENA | sr32(cr));
1884 * sis900_finish_xmit - finish up transmission of packets
1885 * @net_dev: the net device to be transmitted on
1887 * Check for error condition and free socket buffer etc
1888 * schedule for more transmission as needed
1889 * Note: This function is called by interrupt handler,
1890 * don't do "too much" work here
1893 static void sis900_finish_xmit (struct net_device *net_dev)
1895 struct sis900_private *sis_priv = netdev_priv(net_dev);
1897 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1898 struct sk_buff *skb;
1902 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1903 tx_status = sis_priv->tx_ring[entry].cmdsts;
1905 if (tx_status & OWN) {
1906 /* The packet is not transmitted yet (owned by hardware) !
1907 * Note: the interrupt is generated only when Tx Machine
1908 * is idle, so this is an almost impossible case */
1912 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1913 /* packet unsuccessfully transmitted */
1914 if (netif_msg_tx_err(sis_priv))
1915 printk(KERN_DEBUG "%s: Transmit "
1916 "error, Tx status %8.8x.\n",
1917 net_dev->name, tx_status);
1918 net_dev->stats.tx_errors++;
1919 if (tx_status & UNDERRUN)
1920 net_dev->stats.tx_fifo_errors++;
1921 if (tx_status & ABORT)
1922 net_dev->stats.tx_aborted_errors++;
1923 if (tx_status & NOCARRIER)
1924 net_dev->stats.tx_carrier_errors++;
1925 if (tx_status & OWCOLL)
1926 net_dev->stats.tx_window_errors++;
1928 /* packet successfully transmitted */
1929 net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
1930 net_dev->stats.tx_bytes += tx_status & DSIZE;
1931 net_dev->stats.tx_packets++;
1933 /* Free the original skb. */
1934 skb = sis_priv->tx_skbuff[entry];
1935 pci_unmap_single(sis_priv->pci_dev,
1936 sis_priv->tx_ring[entry].bufptr, skb->len,
1938 dev_kfree_skb_irq(skb);
1939 sis_priv->tx_skbuff[entry] = NULL;
1940 sis_priv->tx_ring[entry].bufptr = 0;
1941 sis_priv->tx_ring[entry].cmdsts = 0;
1944 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1945 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1946 /* The ring is no longer full, clear tx_full and schedule
1947 * more transmission by netif_wake_queue(net_dev) */
1948 sis_priv->tx_full = 0;
1949 netif_wake_queue (net_dev);
1954 * sis900_close - close sis900 device
1955 * @net_dev: the net device to be closed
1957 * Disable interrupts, stop the Tx and Rx Status Machine
1958 * free Tx and RX socket buffer
1961 static int sis900_close(struct net_device *net_dev)
1963 struct sis900_private *sis_priv = netdev_priv(net_dev);
1964 struct pci_dev *pdev = sis_priv->pci_dev;
1965 void __iomem *ioaddr = sis_priv->ioaddr;
1966 struct sk_buff *skb;
1969 netif_stop_queue(net_dev);
1971 /* Disable interrupts by clearing the interrupt mask. */
1975 /* Stop the chip's Tx and Rx Status Machine */
1976 sw32(cr, RxDIS | TxDIS | sr32(cr));
1978 del_timer(&sis_priv->timer);
1980 free_irq(pdev->irq, net_dev);
1982 /* Free Tx and RX skbuff */
1983 for (i = 0; i < NUM_RX_DESC; i++) {
1984 skb = sis_priv->rx_skbuff[i];
1986 pci_unmap_single(pdev, sis_priv->rx_ring[i].bufptr,
1987 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1989 sis_priv->rx_skbuff[i] = NULL;
1992 for (i = 0; i < NUM_TX_DESC; i++) {
1993 skb = sis_priv->tx_skbuff[i];
1995 pci_unmap_single(pdev, sis_priv->tx_ring[i].bufptr,
1996 skb->len, PCI_DMA_TODEVICE);
1998 sis_priv->tx_skbuff[i] = NULL;
2002 /* Green! Put the chip in low-power mode. */
2008 * sis900_get_drvinfo - Return information about driver
2009 * @net_dev: the net device to probe
2010 * @info: container for info returned
2012 * Process ethtool command such as "ehtool -i" to show information
2015 static void sis900_get_drvinfo(struct net_device *net_dev,
2016 struct ethtool_drvinfo *info)
2018 struct sis900_private *sis_priv = netdev_priv(net_dev);
2020 strlcpy(info->driver, SIS900_MODULE_NAME, sizeof(info->driver));
2021 strlcpy(info->version, SIS900_DRV_VERSION, sizeof(info->version));
2022 strlcpy(info->bus_info, pci_name(sis_priv->pci_dev),
2023 sizeof(info->bus_info));
2026 static u32 sis900_get_msglevel(struct net_device *net_dev)
2028 struct sis900_private *sis_priv = netdev_priv(net_dev);
2029 return sis_priv->msg_enable;
2032 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
2034 struct sis900_private *sis_priv = netdev_priv(net_dev);
2035 sis_priv->msg_enable = value;
2038 static u32 sis900_get_link(struct net_device *net_dev)
2040 struct sis900_private *sis_priv = netdev_priv(net_dev);
2041 return mii_link_ok(&sis_priv->mii_info);
2044 static int sis900_get_settings(struct net_device *net_dev,
2045 struct ethtool_cmd *cmd)
2047 struct sis900_private *sis_priv = netdev_priv(net_dev);
2048 spin_lock_irq(&sis_priv->lock);
2049 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2050 spin_unlock_irq(&sis_priv->lock);
2054 static int sis900_set_settings(struct net_device *net_dev,
2055 struct ethtool_cmd *cmd)
2057 struct sis900_private *sis_priv = netdev_priv(net_dev);
2059 spin_lock_irq(&sis_priv->lock);
2060 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2061 spin_unlock_irq(&sis_priv->lock);
2065 static int sis900_nway_reset(struct net_device *net_dev)
2067 struct sis900_private *sis_priv = netdev_priv(net_dev);
2068 return mii_nway_restart(&sis_priv->mii_info);
2072 * sis900_set_wol - Set up Wake on Lan registers
2073 * @net_dev: the net device to probe
2074 * @wol: container for info passed to the driver
2076 * Process ethtool command "wol" to setup wake on lan features.
2077 * SiS900 supports sending WoL events if a correct packet is received,
2078 * but there is no simple way to filter them to only a subset (broadcast,
2079 * multicast, unicast or arp).
2082 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2084 struct sis900_private *sis_priv = netdev_priv(net_dev);
2085 void __iomem *ioaddr = sis_priv->ioaddr;
2086 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2088 if (wol->wolopts == 0) {
2089 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2090 cfgpmcsr &= ~PME_EN;
2091 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2092 sw32(pmctrl, pmctrl_bits);
2093 if (netif_msg_wol(sis_priv))
2094 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2098 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2099 | WAKE_BCAST | WAKE_ARP))
2102 if (wol->wolopts & WAKE_MAGIC)
2103 pmctrl_bits |= MAGICPKT;
2104 if (wol->wolopts & WAKE_PHY)
2105 pmctrl_bits |= LINKON;
2107 sw32(pmctrl, pmctrl_bits);
2109 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2111 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2112 if (netif_msg_wol(sis_priv))
2113 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2118 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2120 struct sis900_private *sp = netdev_priv(net_dev);
2121 void __iomem *ioaddr = sp->ioaddr;
2124 pmctrl_bits = sr32(pmctrl);
2125 if (pmctrl_bits & MAGICPKT)
2126 wol->wolopts |= WAKE_MAGIC;
2127 if (pmctrl_bits & LINKON)
2128 wol->wolopts |= WAKE_PHY;
2130 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2133 static const struct ethtool_ops sis900_ethtool_ops = {
2134 .get_drvinfo = sis900_get_drvinfo,
2135 .get_msglevel = sis900_get_msglevel,
2136 .set_msglevel = sis900_set_msglevel,
2137 .get_link = sis900_get_link,
2138 .get_settings = sis900_get_settings,
2139 .set_settings = sis900_set_settings,
2140 .nway_reset = sis900_nway_reset,
2141 .get_wol = sis900_get_wol,
2142 .set_wol = sis900_set_wol
2146 * mii_ioctl - process MII i/o control command
2147 * @net_dev: the net device to command for
2148 * @rq: parameter for command
2149 * @cmd: the i/o command
2151 * Process MII command like read/write MII register
2154 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2156 struct sis900_private *sis_priv = netdev_priv(net_dev);
2157 struct mii_ioctl_data *data = if_mii(rq);
2160 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2161 data->phy_id = sis_priv->mii->phy_addr;
2164 case SIOCGMIIREG: /* Read MII PHY register. */
2165 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2168 case SIOCSMIIREG: /* Write MII PHY register. */
2169 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2177 * sis900_set_config - Set media type by net_device.set_config
2178 * @dev: the net device for media type change
2179 * @map: ifmap passed by ifconfig
2181 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2182 * we support only port changes. All other runtime configuration
2183 * changes will be ignored
2186 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2188 struct sis900_private *sis_priv = netdev_priv(dev);
2189 struct mii_phy *mii_phy = sis_priv->mii;
2193 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2194 /* we switch on the ifmap->port field. I couldn't find anything
2195 * like a definition or standard for the values of that field.
2196 * I think the meaning of those values is device specific. But
2197 * since I would like to change the media type via the ifconfig
2198 * command I use the definition from linux/netdevice.h
2199 * (which seems to be different from the ifport(pcmcia) definition) */
2201 case IF_PORT_UNKNOWN: /* use auto here */
2202 dev->if_port = map->port;
2203 /* we are going to change the media type, so the Link
2204 * will be temporary down and we need to reflect that
2205 * here. When the Link comes up again, it will be
2206 * sensed by the sis_timer procedure, which also does
2207 * all the rest for us */
2208 netif_carrier_off(dev);
2210 /* read current state */
2211 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2213 /* enable auto negotiation and reset the negotioation
2214 * (I don't really know what the auto negatiotiation
2215 * reset really means, but it sounds for me right to
2217 mdio_write(dev, mii_phy->phy_addr,
2218 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2222 case IF_PORT_10BASET: /* 10BaseT */
2223 dev->if_port = map->port;
2225 /* we are going to change the media type, so the Link
2226 * will be temporary down and we need to reflect that
2227 * here. When the Link comes up again, it will be
2228 * sensed by the sis_timer procedure, which also does
2229 * all the rest for us */
2230 netif_carrier_off(dev);
2232 /* set Speed to 10Mbps */
2233 /* read current state */
2234 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2236 /* disable auto negotiation and force 10MBit mode*/
2237 mdio_write(dev, mii_phy->phy_addr,
2238 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2242 case IF_PORT_100BASET: /* 100BaseT */
2243 case IF_PORT_100BASETX: /* 100BaseTx */
2244 dev->if_port = map->port;
2246 /* we are going to change the media type, so the Link
2247 * will be temporary down and we need to reflect that
2248 * here. When the Link comes up again, it will be
2249 * sensed by the sis_timer procedure, which also does
2250 * all the rest for us */
2251 netif_carrier_off(dev);
2253 /* set Speed to 100Mbps */
2254 /* disable auto negotiation and enable 100MBit Mode */
2255 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2256 mdio_write(dev, mii_phy->phy_addr,
2257 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2262 case IF_PORT_10BASE2: /* 10Base2 */
2263 case IF_PORT_AUI: /* AUI */
2264 case IF_PORT_100BASEFX: /* 100BaseFx */
2265 /* These Modes are not supported (are they?)*/
2277 * sis900_mcast_bitnr - compute hashtable index
2278 * @addr: multicast address
2279 * @revision: revision id of chip
2281 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2282 * hash table, which makes this function a little bit different from other drivers
2283 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2284 * multicast hash table.
2287 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2290 u32 crc = ether_crc(6, addr);
2292 /* leave 8 or 7 most siginifant bits */
2293 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2294 return (int)(crc >> 24);
2296 return (int)(crc >> 25);
2300 * set_rx_mode - Set SiS900 receive mode
2301 * @net_dev: the net device to be set
2303 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2304 * And set the appropriate multicast filter.
2305 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2308 static void set_rx_mode(struct net_device *net_dev)
2310 struct sis900_private *sis_priv = netdev_priv(net_dev);
2311 void __iomem *ioaddr = sis_priv->ioaddr;
2312 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2313 int i, table_entries;
2316 /* 635 Hash Table entries = 256(2^16) */
2317 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2318 (sis_priv->chipset_rev == SIS900B_900_REV))
2323 if (net_dev->flags & IFF_PROMISC) {
2324 /* Accept any kinds of packets */
2325 rx_mode = RFPromiscuous;
2326 for (i = 0; i < table_entries; i++)
2327 mc_filter[i] = 0xffff;
2328 } else if ((netdev_mc_count(net_dev) > multicast_filter_limit) ||
2329 (net_dev->flags & IFF_ALLMULTI)) {
2330 /* too many multicast addresses or accept all multicast packet */
2331 rx_mode = RFAAB | RFAAM;
2332 for (i = 0; i < table_entries; i++)
2333 mc_filter[i] = 0xffff;
2335 /* Accept Broadcast packet, destination address matchs our
2336 * MAC address, use Receive Filter to reject unwanted MCAST
2338 struct netdev_hw_addr *ha;
2341 netdev_for_each_mc_addr(ha, net_dev) {
2342 unsigned int bit_nr;
2344 bit_nr = sis900_mcast_bitnr(ha->addr,
2345 sis_priv->chipset_rev);
2346 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2350 /* update Multicast Hash Table in Receive Filter */
2351 for (i = 0; i < table_entries; i++) {
2352 /* why plus 0x04 ??, That makes the correct value for hash table. */
2353 sw32(rfcr, (u32)(0x00000004 + i) << RFADDR_shift);
2354 sw32(rfdr, mc_filter[i]);
2357 sw32(rfcr, RFEN | rx_mode);
2359 /* sis900 is capable of looping back packets at MAC level for
2360 * debugging purpose */
2361 if (net_dev->flags & IFF_LOOPBACK) {
2363 /* We must disable Tx/Rx before setting loopback mode */
2364 cr_saved = sr32(cr);
2365 sw32(cr, cr_saved | TxDIS | RxDIS);
2366 /* enable loopback */
2367 sw32(txcfg, sr32(txcfg) | TxMLB);
2368 sw32(rxcfg, sr32(rxcfg) | RxATX);
2375 * sis900_reset - Reset sis900 MAC
2376 * @net_dev: the net device to reset
2378 * reset sis900 MAC and wait until finished
2379 * reset through command register
2380 * change backoff algorithm for 900B0 & 635 M/B
2383 static void sis900_reset(struct net_device *net_dev)
2385 struct sis900_private *sis_priv = netdev_priv(net_dev);
2386 void __iomem *ioaddr = sis_priv->ioaddr;
2387 u32 status = TxRCMP | RxRCMP;
2394 sw32(cr, RxRESET | TxRESET | RESET | sr32(cr));
2396 /* Check that the chip has finished the reset. */
2397 for (i = 0; status && (i < 1000); i++)
2398 status ^= sr32(isr) & status;
2400 if (sis_priv->chipset_rev >= SIS635A_900_REV ||
2401 sis_priv->chipset_rev == SIS900B_900_REV)
2402 sw32(cfg, PESEL | RND_CNT);
2408 * sis900_remove - Remove sis900 device
2409 * @pci_dev: the pci device to be removed
2411 * remove and release SiS900 net device
2414 static void sis900_remove(struct pci_dev *pci_dev)
2416 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2417 struct sis900_private *sis_priv = netdev_priv(net_dev);
2419 unregister_netdev(net_dev);
2421 while (sis_priv->first_mii) {
2422 struct mii_phy *phy = sis_priv->first_mii;
2424 sis_priv->first_mii = phy->next;
2428 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2429 sis_priv->rx_ring_dma);
2430 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2431 sis_priv->tx_ring_dma);
2432 pci_iounmap(pci_dev, sis_priv->ioaddr);
2433 free_netdev(net_dev);
2434 pci_release_regions(pci_dev);
2435 pci_set_drvdata(pci_dev, NULL);
2440 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2442 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2443 struct sis900_private *sis_priv = netdev_priv(net_dev);
2444 void __iomem *ioaddr = sis_priv->ioaddr;
2446 if(!netif_running(net_dev))
2449 netif_stop_queue(net_dev);
2450 netif_device_detach(net_dev);
2452 /* Stop the chip's Tx and Rx Status Machine */
2453 sw32(cr, RxDIS | TxDIS | sr32(cr));
2455 pci_set_power_state(pci_dev, PCI_D3hot);
2456 pci_save_state(pci_dev);
2461 static int sis900_resume(struct pci_dev *pci_dev)
2463 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2464 struct sis900_private *sis_priv = netdev_priv(net_dev);
2465 void __iomem *ioaddr = sis_priv->ioaddr;
2467 if(!netif_running(net_dev))
2469 pci_restore_state(pci_dev);
2470 pci_set_power_state(pci_dev, PCI_D0);
2472 sis900_init_rxfilter(net_dev);
2474 sis900_init_tx_ring(net_dev);
2475 sis900_init_rx_ring(net_dev);
2477 set_rx_mode(net_dev);
2479 netif_device_attach(net_dev);
2480 netif_start_queue(net_dev);
2482 /* Workaround for EDB */
2483 sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2485 /* Enable all known interrupts by setting the interrupt mask. */
2486 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE);
2487 sw32(cr, RxENA | sr32(cr));
2490 sis900_check_mode(net_dev, sis_priv->mii);
2494 #endif /* CONFIG_PM */
2496 static struct pci_driver sis900_pci_driver = {
2497 .name = SIS900_MODULE_NAME,
2498 .id_table = sis900_pci_tbl,
2499 .probe = sis900_probe,
2500 .remove = sis900_remove,
2502 .suspend = sis900_suspend,
2503 .resume = sis900_resume,
2504 #endif /* CONFIG_PM */
2507 static int __init sis900_init_module(void)
2509 /* when a module, this is printed whether or not devices are found in probe */
2514 return pci_register_driver(&sis900_pci_driver);
2517 static void __exit sis900_cleanup_module(void)
2519 pci_unregister_driver(&sis900_pci_driver);
2522 module_init(sis900_init_module);
2523 module_exit(sis900_cleanup_module);