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"
110 static const struct pci_device_id sis900_pci_tbl[] = {
111 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900,
112 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900},
113 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016,
114 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016},
117 MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
119 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
121 static const struct mii_chip_info {
130 } mii_chip_table[] = {
131 { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
132 { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
133 { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
134 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
135 { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
136 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
137 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
138 { "ICS LAN PHY", 0x0015, 0xF440, LAN },
139 { "ICS LAN PHY", 0x0143, 0xBC70, LAN },
140 { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
141 { "NS 83847 PHY", 0x2000, 0x5C30, MIX },
142 { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
143 { "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
148 struct mii_phy * next;
156 typedef struct _BufferDesc {
162 struct sis900_private {
163 struct pci_dev * pci_dev;
167 struct mii_phy * mii;
168 struct mii_phy * first_mii; /* record the first mii structure */
169 unsigned int cur_phy;
170 struct mii_if_info mii_info;
172 void __iomem *ioaddr;
174 struct timer_list timer; /* Link status detection timer. */
175 u8 autong_complete; /* 1: auto-negotiate complete */
179 unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
180 unsigned int cur_tx, dirty_tx;
182 /* The saved address of a sent/receive-in-place packet buffer */
183 struct sk_buff *tx_skbuff[NUM_TX_DESC];
184 struct sk_buff *rx_skbuff[NUM_RX_DESC];
188 dma_addr_t tx_ring_dma;
189 dma_addr_t rx_ring_dma;
191 unsigned int tx_full; /* The Tx queue is full. */
196 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
197 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
198 MODULE_LICENSE("GPL");
200 module_param(multicast_filter_limit, int, 0444);
201 module_param(max_interrupt_work, int, 0444);
202 module_param(sis900_debug, int, 0444);
203 MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
204 MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
205 MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
207 #define sw32(reg, val) iowrite32(val, ioaddr + (reg))
208 #define sw8(reg, val) iowrite8(val, ioaddr + (reg))
209 #define sr32(reg) ioread32(ioaddr + (reg))
210 #define sr16(reg) ioread16(ioaddr + (reg))
212 #ifdef CONFIG_NET_POLL_CONTROLLER
213 static void sis900_poll(struct net_device *dev);
215 static int sis900_open(struct net_device *net_dev);
216 static int sis900_mii_probe (struct net_device * net_dev);
217 static void sis900_init_rxfilter (struct net_device * net_dev);
218 static u16 read_eeprom(void __iomem *ioaddr, int location);
219 static int mdio_read(struct net_device *net_dev, int phy_id, int location);
220 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
221 static void sis900_timer(unsigned long data);
222 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
223 static void sis900_tx_timeout(struct net_device *net_dev);
224 static void sis900_init_tx_ring(struct net_device *net_dev);
225 static void sis900_init_rx_ring(struct net_device *net_dev);
226 static netdev_tx_t sis900_start_xmit(struct sk_buff *skb,
227 struct net_device *net_dev);
228 static int sis900_rx(struct net_device *net_dev);
229 static void sis900_finish_xmit (struct net_device *net_dev);
230 static irqreturn_t sis900_interrupt(int irq, void *dev_instance);
231 static int sis900_close(struct net_device *net_dev);
232 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
233 static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
234 static void set_rx_mode(struct net_device *net_dev);
235 static void sis900_reset(struct net_device *net_dev);
236 static void sis630_set_eq(struct net_device *net_dev, u8 revision);
237 static int sis900_set_config(struct net_device *dev, struct ifmap *map);
238 static u16 sis900_default_phy(struct net_device * net_dev);
239 static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
240 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
241 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
242 static void sis900_set_mode(struct sis900_private *, int speed, int duplex);
243 static const struct ethtool_ops sis900_ethtool_ops;
246 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
247 * @pci_dev: the sis900 pci device
248 * @net_dev: the net device to get address for
250 * Older SiS900 and friends, use EEPROM to store MAC address.
251 * MAC address is read from read_eeprom() into @net_dev->dev_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);
278 * sis630e_get_mac_addr - Get MAC address for SiS630E model
279 * @pci_dev: the sis900 pci device
280 * @net_dev: the net device to get address for
282 * SiS630E model, use APC CMOS RAM to store MAC address.
283 * APC CMOS RAM is accessed through ISA bridge.
284 * MAC address is read into @net_dev->dev_addr.
287 static int sis630e_get_mac_addr(struct pci_dev *pci_dev,
288 struct net_device *net_dev)
290 struct pci_dev *isa_bridge = NULL;
294 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
296 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
298 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
302 pci_read_config_byte(isa_bridge, 0x48, ®);
303 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
305 for (i = 0; i < 6; i++) {
306 outb(0x09 + i, 0x70);
307 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
310 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
311 pci_dev_put(isa_bridge);
318 * sis635_get_mac_addr - Get MAC address for SIS635 model
319 * @pci_dev: the sis900 pci device
320 * @net_dev: the net device to get address for
322 * SiS635 model, set MAC Reload Bit to load Mac address from APC
323 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
324 * @net_dev->dev_addr.
327 static int sis635_get_mac_addr(struct pci_dev *pci_dev,
328 struct net_device *net_dev)
330 struct sis900_private *sis_priv = netdev_priv(net_dev);
331 void __iomem *ioaddr = sis_priv->ioaddr;
335 rfcrSave = sr32(rfcr);
337 sw32(cr, rfcrSave | RELOAD);
340 /* disable packet filtering before setting filter */
341 sw32(rfcr, rfcrSave & ~RFEN);
343 /* load MAC addr to filter data register */
344 for (i = 0 ; i < 3 ; i++) {
345 sw32(rfcr, (i << RFADDR_shift));
346 *( ((u16 *)net_dev->dev_addr) + i) = sr16(rfdr);
349 /* enable packet filtering */
350 sw32(rfcr, rfcrSave | RFEN);
356 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
357 * @pci_dev: the sis900 pci device
358 * @net_dev: the net device to get address for
360 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
362 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
363 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
364 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
365 * EEDONE signal to refuse EEPROM access by LAN.
366 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
367 * The signature field in SiS962 or SiS963 spec is meaningless.
368 * MAC address is read into @net_dev->dev_addr.
371 static int sis96x_get_mac_addr(struct pci_dev *pci_dev,
372 struct net_device *net_dev)
374 struct sis900_private *sis_priv = netdev_priv(net_dev);
375 void __iomem *ioaddr = sis_priv->ioaddr;
379 for (wait = 0; wait < 2000; wait++) {
380 if (sr32(mear) & EEGNT) {
381 u16 *mac = (u16 *)net_dev->dev_addr;
384 /* get MAC address from EEPROM */
385 for (i = 0; i < 3; i++)
386 mac[i] = read_eeprom(ioaddr, i + EEPROMMACAddr);
397 static const struct net_device_ops sis900_netdev_ops = {
398 .ndo_open = sis900_open,
399 .ndo_stop = sis900_close,
400 .ndo_start_xmit = sis900_start_xmit,
401 .ndo_set_config = sis900_set_config,
402 .ndo_set_rx_mode = set_rx_mode,
403 .ndo_change_mtu = eth_change_mtu,
404 .ndo_validate_addr = eth_validate_addr,
405 .ndo_set_mac_address = eth_mac_addr,
406 .ndo_do_ioctl = mii_ioctl,
407 .ndo_tx_timeout = sis900_tx_timeout,
408 #ifdef CONFIG_NET_POLL_CONTROLLER
409 .ndo_poll_controller = sis900_poll,
414 * sis900_probe - Probe for sis900 device
415 * @pci_dev: the sis900 pci device
416 * @pci_id: the pci device ID
418 * Check and probe sis900 net device for @pci_dev.
419 * Get mac address according to the chip revision,
420 * and assign SiS900-specific entries in the device structure.
421 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
424 static int sis900_probe(struct pci_dev *pci_dev,
425 const struct pci_device_id *pci_id)
427 struct sis900_private *sis_priv;
428 struct net_device *net_dev;
432 void __iomem *ioaddr;
434 const char *card_name = card_names[pci_id->driver_data];
435 const char *dev_name = pci_name(pci_dev);
437 /* when built into the kernel, we only print version if device is found */
439 static int printed_version;
440 if (!printed_version++)
444 /* setup various bits in PCI command register */
445 ret = pcim_enable_device(pci_dev);
448 i = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
450 printk(KERN_ERR "sis900.c: architecture does not support "
451 "32bit PCI busmaster DMA\n");
455 pci_set_master(pci_dev);
457 net_dev = alloc_etherdev(sizeof(struct sis900_private));
460 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
462 /* We do a request_region() to register /proc/ioports info. */
463 ret = pci_request_regions(pci_dev, "sis900");
468 ioaddr = pci_iomap(pci_dev, 0, 0);
474 sis_priv = netdev_priv(net_dev);
475 sis_priv->ioaddr = ioaddr;
476 sis_priv->pci_dev = pci_dev;
477 spin_lock_init(&sis_priv->lock);
479 pci_set_drvdata(pci_dev, net_dev);
481 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
486 sis_priv->tx_ring = ring_space;
487 sis_priv->tx_ring_dma = ring_dma;
489 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
494 sis_priv->rx_ring = ring_space;
495 sis_priv->rx_ring_dma = ring_dma;
497 /* The SiS900-specific entries in the device structure. */
498 net_dev->netdev_ops = &sis900_netdev_ops;
499 net_dev->watchdog_timeo = TX_TIMEOUT;
500 net_dev->ethtool_ops = &sis900_ethtool_ops;
502 if (sis900_debug > 0)
503 sis_priv->msg_enable = sis900_debug;
505 sis_priv->msg_enable = SIS900_DEF_MSG;
507 sis_priv->mii_info.dev = net_dev;
508 sis_priv->mii_info.mdio_read = mdio_read;
509 sis_priv->mii_info.mdio_write = mdio_write;
510 sis_priv->mii_info.phy_id_mask = 0x1f;
511 sis_priv->mii_info.reg_num_mask = 0x1f;
513 /* Get Mac address according to the chip revision */
514 sis_priv->chipset_rev = pci_dev->revision;
515 if(netif_msg_probe(sis_priv))
516 printk(KERN_DEBUG "%s: detected revision %2.2x, "
517 "trying to get MAC address...\n",
518 dev_name, sis_priv->chipset_rev);
521 if (sis_priv->chipset_rev == SIS630E_900_REV)
522 ret = sis630e_get_mac_addr(pci_dev, net_dev);
523 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
524 ret = sis635_get_mac_addr(pci_dev, net_dev);
525 else if (sis_priv->chipset_rev == SIS96x_900_REV)
526 ret = sis96x_get_mac_addr(pci_dev, net_dev);
528 ret = sis900_get_mac_addr(pci_dev, net_dev);
530 if (!ret || !is_valid_ether_addr(net_dev->dev_addr)) {
531 eth_hw_addr_random(net_dev);
532 printk(KERN_WARNING "%s: Unreadable or invalid MAC address,"
533 "using random generated one\n", dev_name);
536 /* 630ET : set the mii access mode as software-mode */
537 if (sis_priv->chipset_rev == SIS630ET_900_REV)
538 sw32(cr, ACCESSMODE | sr32(cr));
540 /* probe for mii transceiver */
541 if (sis900_mii_probe(net_dev) == 0) {
542 printk(KERN_WARNING "%s: Error probing MII device.\n",
548 /* save our host bridge revision */
549 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
551 sis_priv->host_bridge_rev = dev->revision;
555 ret = register_netdev(net_dev);
559 /* print some information about our NIC */
560 printk(KERN_INFO "%s: %s at 0x%p, IRQ %d, %pM\n",
561 net_dev->name, card_name, ioaddr, pci_dev->irq,
564 /* Detect Wake on Lan support */
565 ret = (sr32(CFGPMC) & PMESP) >> 27;
566 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
567 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
572 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
573 sis_priv->rx_ring_dma);
575 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
576 sis_priv->tx_ring_dma);
578 pci_iounmap(pci_dev, ioaddr);
580 free_netdev(net_dev);
585 * sis900_mii_probe - Probe MII PHY for sis900
586 * @net_dev: the net device to probe for
588 * Search for total of 32 possible mii phy addresses.
589 * Identify and set current phy if found one,
590 * return error if it failed to found.
593 static int sis900_mii_probe(struct net_device *net_dev)
595 struct sis900_private *sis_priv = netdev_priv(net_dev);
596 const char *dev_name = pci_name(sis_priv->pci_dev);
597 u16 poll_bit = MII_STAT_LINK, status = 0;
598 unsigned long timeout = jiffies + 5 * HZ;
601 sis_priv->mii = NULL;
603 /* search for total of 32 possible mii phy addresses */
604 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
605 struct mii_phy * mii_phy = NULL;
610 for(i = 0; i < 2; i++)
611 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
613 if (mii_status == 0xffff || mii_status == 0x0000) {
614 if (netif_msg_probe(sis_priv))
615 printk(KERN_DEBUG "%s: MII at address %d"
621 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
622 mii_phy = sis_priv->first_mii;
626 mii_phy = mii_phy->next;
632 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
633 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
634 mii_phy->phy_addr = phy_addr;
635 mii_phy->status = mii_status;
636 mii_phy->next = sis_priv->mii;
637 sis_priv->mii = mii_phy;
638 sis_priv->first_mii = mii_phy;
640 for (i = 0; mii_chip_table[i].phy_id1; i++)
641 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
642 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
643 mii_phy->phy_types = mii_chip_table[i].phy_types;
644 if (mii_chip_table[i].phy_types == MIX)
646 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
647 printk(KERN_INFO "%s: %s transceiver found "
650 mii_chip_table[i].name,
655 if( !mii_chip_table[i].phy_id1 ) {
656 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
658 mii_phy->phy_types = UNKNOWN;
662 if (sis_priv->mii == NULL) {
663 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
667 /* select default PHY for mac */
668 sis_priv->mii = NULL;
669 sis900_default_phy( net_dev );
671 /* Reset phy if default phy is internal sis900 */
672 if ((sis_priv->mii->phy_id0 == 0x001D) &&
673 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
674 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
676 /* workaround for ICS1893 PHY */
677 if ((sis_priv->mii->phy_id0 == 0x0015) &&
678 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
679 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
681 if(status & MII_STAT_LINK){
685 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
686 if (time_after_eq(jiffies, timeout)) {
687 printk(KERN_WARNING "%s: reset phy and link down now\n",
694 if (sis_priv->chipset_rev == SIS630E_900_REV) {
695 /* SiS 630E has some bugs on default value of PHY registers */
696 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
697 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
698 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
699 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
700 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
703 if (sis_priv->mii->status & MII_STAT_LINK)
704 netif_carrier_on(net_dev);
706 netif_carrier_off(net_dev);
712 * sis900_default_phy - Select default PHY for sis900 mac.
713 * @net_dev: the net device to probe for
715 * Select first detected PHY with link as default.
716 * If no one is link on, select PHY whose types is HOME as default.
717 * If HOME doesn't exist, select LAN.
720 static u16 sis900_default_phy(struct net_device * net_dev)
722 struct sis900_private *sis_priv = netdev_priv(net_dev);
723 struct mii_phy *phy = NULL, *phy_home = NULL,
724 *default_phy = NULL, *phy_lan = NULL;
727 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
728 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
729 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
731 /* Link ON & Not select default PHY & not ghost PHY */
732 if ((status & MII_STAT_LINK) && !default_phy &&
733 (phy->phy_types != UNKNOWN))
736 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
737 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
738 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
739 if (phy->phy_types == HOME)
741 else if(phy->phy_types == LAN)
746 if (!default_phy && phy_home)
747 default_phy = phy_home;
748 else if (!default_phy && phy_lan)
749 default_phy = phy_lan;
750 else if (!default_phy)
751 default_phy = sis_priv->first_mii;
753 if (sis_priv->mii != default_phy) {
754 sis_priv->mii = default_phy;
755 sis_priv->cur_phy = default_phy->phy_addr;
756 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
757 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
760 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
762 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
763 status &= (~MII_CNTL_ISOLATE);
765 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
766 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
767 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
774 * sis900_set_capability - set the media capability of network adapter.
775 * @net_dev : the net device to probe for
778 * Set the media capability of network adapter according to
779 * mii status register. It's necessary before auto-negotiate.
782 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
787 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
788 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
790 cap = MII_NWAY_CSMA_CD |
791 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
792 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
793 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
794 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
796 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
800 /* Delay between EEPROM clock transitions. */
801 #define eeprom_delay() sr32(mear)
804 * read_eeprom - Read Serial EEPROM
805 * @ioaddr: base i/o address
806 * @location: the EEPROM location to read
808 * Read Serial EEPROM through EEPROM Access Register.
809 * Note that location is in word (16 bits) unit
812 static u16 read_eeprom(void __iomem *ioaddr, int location)
814 u32 read_cmd = location | EEread;
823 /* Shift the read command (9) bits out. */
824 for (i = 8; i >= 0; i--) {
825 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
829 sw32(mear, dataval | EECLK);
835 /* read the 16-bits data in */
836 for (i = 16; i > 0; i--) {
839 sw32(mear, EECS | EECLK);
841 retval = (retval << 1) | ((sr32(mear) & EEDO) ? 1 : 0);
845 /* Terminate the EEPROM access. */
852 /* Read and write the MII management registers using software-generated
853 serial MDIO protocol. Note that the command bits and data bits are
854 send out separately */
855 #define mdio_delay() sr32(mear)
857 static void mdio_idle(struct sis900_private *sp)
859 void __iomem *ioaddr = sp->ioaddr;
861 sw32(mear, MDIO | MDDIR);
863 sw32(mear, MDIO | MDDIR | MDC);
866 /* Synchronize the MII management interface by shifting 32 one bits out. */
867 static void mdio_reset(struct sis900_private *sp)
869 void __iomem *ioaddr = sp->ioaddr;
872 for (i = 31; i >= 0; i--) {
873 sw32(mear, MDDIR | MDIO);
875 sw32(mear, MDDIR | MDIO | MDC);
881 * mdio_read - read MII PHY register
882 * @net_dev: the net device to read
883 * @phy_id: the phy address to read
884 * @location: the phy regiester id to read
886 * Read MII registers through MDIO and MDC
887 * using MDIO management frame structure and protocol(defined by ISO/IEC).
888 * Please see SiS7014 or ICS spec
891 static int mdio_read(struct net_device *net_dev, int phy_id, int location)
893 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
894 struct sis900_private *sp = netdev_priv(net_dev);
895 void __iomem *ioaddr = sp->ioaddr;
902 for (i = 15; i >= 0; i--) {
903 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
907 sw32(mear, dataval | MDC);
911 /* Read the 16 data bits. */
912 for (i = 16; i > 0; i--) {
915 retval = (retval << 1) | ((sr32(mear) & MDIO) ? 1 : 0);
925 * mdio_write - write MII PHY register
926 * @net_dev: the net device to write
927 * @phy_id: the phy address to write
928 * @location: the phy regiester id to write
929 * @value: the register value to write with
931 * Write MII registers with @value through MDIO and MDC
932 * using MDIO management frame structure and protocol(defined by ISO/IEC)
933 * please see SiS7014 or ICS spec
936 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
939 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
940 struct sis900_private *sp = netdev_priv(net_dev);
941 void __iomem *ioaddr = sp->ioaddr;
947 /* Shift the command bits out. */
948 for (i = 15; i >= 0; i--) {
949 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
953 sw8(mear, dataval | MDC);
958 /* Shift the value bits out. */
959 for (i = 15; i >= 0; i--) {
960 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
964 sw32(mear, dataval | MDC);
969 /* Clear out extra bits. */
970 for (i = 2; i > 0; i--) {
981 * sis900_reset_phy - reset sis900 mii phy.
982 * @net_dev: the net device to write
983 * @phy_addr: default phy address
985 * Some specific phy can't work properly without reset.
986 * This function will be called during initialization and
987 * link status change from ON to DOWN.
990 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
995 for (i = 0; i < 2; i++)
996 status = mdio_read(net_dev, phy_addr, MII_STATUS);
998 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
1003 #ifdef CONFIG_NET_POLL_CONTROLLER
1005 * Polling 'interrupt' - used by things like netconsole to send skbs
1006 * without having to re-enable interrupts. It's not called while
1007 * the interrupt routine is executing.
1009 static void sis900_poll(struct net_device *dev)
1011 struct sis900_private *sp = netdev_priv(dev);
1012 const int irq = sp->pci_dev->irq;
1015 sis900_interrupt(irq, dev);
1021 * sis900_open - open sis900 device
1022 * @net_dev: the net device to open
1024 * Do some initialization and start net interface.
1025 * enable interrupts and set sis900 timer.
1029 sis900_open(struct net_device *net_dev)
1031 struct sis900_private *sis_priv = netdev_priv(net_dev);
1032 void __iomem *ioaddr = sis_priv->ioaddr;
1035 /* Soft reset the chip. */
1036 sis900_reset(net_dev);
1038 /* Equalizer workaround Rule */
1039 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1041 ret = request_irq(sis_priv->pci_dev->irq, sis900_interrupt, IRQF_SHARED,
1042 net_dev->name, net_dev);
1046 sis900_init_rxfilter(net_dev);
1048 sis900_init_tx_ring(net_dev);
1049 sis900_init_rx_ring(net_dev);
1051 set_rx_mode(net_dev);
1053 netif_start_queue(net_dev);
1055 /* Workaround for EDB */
1056 sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1058 /* Enable all known interrupts by setting the interrupt mask. */
1059 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE | TxDESC);
1060 sw32(cr, RxENA | sr32(cr));
1063 sis900_check_mode(net_dev, sis_priv->mii);
1065 /* Set the timer to switch to check for link beat and perhaps switch
1066 to an alternate media type. */
1067 init_timer(&sis_priv->timer);
1068 sis_priv->timer.expires = jiffies + HZ;
1069 sis_priv->timer.data = (unsigned long)net_dev;
1070 sis_priv->timer.function = sis900_timer;
1071 add_timer(&sis_priv->timer);
1077 * sis900_init_rxfilter - Initialize the Rx filter
1078 * @net_dev: the net device to initialize for
1080 * Set receive filter address to our MAC address
1081 * and enable packet filtering.
1085 sis900_init_rxfilter (struct net_device * net_dev)
1087 struct sis900_private *sis_priv = netdev_priv(net_dev);
1088 void __iomem *ioaddr = sis_priv->ioaddr;
1092 rfcrSave = sr32(rfcr);
1094 /* disable packet filtering before setting filter */
1095 sw32(rfcr, rfcrSave & ~RFEN);
1097 /* load MAC addr to filter data register */
1098 for (i = 0 ; i < 3 ; i++) {
1099 u32 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1101 sw32(rfcr, i << RFADDR_shift);
1104 if (netif_msg_hw(sis_priv)) {
1105 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1106 net_dev->name, i, sr32(rfdr));
1110 /* enable packet filtering */
1111 sw32(rfcr, rfcrSave | RFEN);
1115 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1116 * @net_dev: the net device to initialize for
1118 * Initialize the Tx descriptor ring,
1122 sis900_init_tx_ring(struct net_device *net_dev)
1124 struct sis900_private *sis_priv = netdev_priv(net_dev);
1125 void __iomem *ioaddr = sis_priv->ioaddr;
1128 sis_priv->tx_full = 0;
1129 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1131 for (i = 0; i < NUM_TX_DESC; i++) {
1132 sis_priv->tx_skbuff[i] = NULL;
1134 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1135 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1136 sis_priv->tx_ring[i].cmdsts = 0;
1137 sis_priv->tx_ring[i].bufptr = 0;
1140 /* load Transmit Descriptor Register */
1141 sw32(txdp, sis_priv->tx_ring_dma);
1142 if (netif_msg_hw(sis_priv))
1143 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1144 net_dev->name, sr32(txdp));
1148 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1149 * @net_dev: the net device to initialize for
1151 * Initialize the Rx descriptor ring,
1152 * and pre-allocate recevie buffers (socket buffer)
1156 sis900_init_rx_ring(struct net_device *net_dev)
1158 struct sis900_private *sis_priv = netdev_priv(net_dev);
1159 void __iomem *ioaddr = sis_priv->ioaddr;
1162 sis_priv->cur_rx = 0;
1163 sis_priv->dirty_rx = 0;
1165 /* init RX descriptor */
1166 for (i = 0; i < NUM_RX_DESC; i++) {
1167 sis_priv->rx_skbuff[i] = NULL;
1169 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1170 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1171 sis_priv->rx_ring[i].cmdsts = 0;
1172 sis_priv->rx_ring[i].bufptr = 0;
1175 /* allocate sock buffers */
1176 for (i = 0; i < NUM_RX_DESC; i++) {
1177 struct sk_buff *skb;
1179 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1180 /* not enough memory for skbuff, this makes a "hole"
1181 on the buffer ring, it is not clear how the
1182 hardware will react to this kind of degenerated
1186 sis_priv->rx_skbuff[i] = skb;
1187 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1188 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
1189 skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1190 if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev,
1191 sis_priv->rx_ring[i].bufptr))) {
1193 sis_priv->rx_skbuff[i] = NULL;
1197 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1199 /* load Receive Descriptor Register */
1200 sw32(rxdp, sis_priv->rx_ring_dma);
1201 if (netif_msg_hw(sis_priv))
1202 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1203 net_dev->name, sr32(rxdp));
1207 * sis630_set_eq - set phy equalizer value for 630 LAN
1208 * @net_dev: the net device to set equalizer value
1209 * @revision: 630 LAN revision number
1211 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1212 * PHY register 14h(Test)
1213 * Bit 14: 0 -- Automatically detect (default)
1214 * 1 -- Manually set Equalizer filter
1215 * Bit 13: 0 -- (Default)
1216 * 1 -- Speed up convergence of equalizer setting
1217 * Bit 9 : 0 -- (Default)
1218 * 1 -- Disable Baseline Wander
1219 * Bit 3~7 -- Equalizer filter setting
1220 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1221 * Then calculate equalizer value
1222 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1223 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1224 * Calculate Equalizer value:
1225 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-detect proper equalizer value.
1226 * When the equalizer is stable, this value is not a fixed value. It will be within
1227 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1228 * 0 <= max <= 4 --> set equalizer to max
1229 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1230 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1233 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1235 struct sis900_private *sis_priv = netdev_priv(net_dev);
1236 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1239 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1240 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1243 if (netif_carrier_ok(net_dev)) {
1244 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1245 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1246 (0x2200 | reg14h) & 0xBFFF);
1247 for (i=0; i < maxcount; i++) {
1248 eq_value = (0x00F8 & mdio_read(net_dev,
1249 sis_priv->cur_phy, MII_RESV)) >> 3;
1251 max_value=min_value=eq_value;
1252 max_value = (eq_value > max_value) ?
1253 eq_value : max_value;
1254 min_value = (eq_value < min_value) ?
1255 eq_value : min_value;
1257 /* 630E rule to determine the equalizer value */
1258 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1259 revision == SIS630ET_900_REV) {
1261 eq_value = max_value;
1262 else if (max_value >= 5 && max_value < 15)
1263 eq_value = (max_value == min_value) ?
1264 max_value+2 : max_value+1;
1265 else if (max_value >= 15)
1266 eq_value=(max_value == min_value) ?
1267 max_value+6 : max_value+5;
1269 /* 630B0&B1 rule to determine the equalizer value */
1270 if (revision == SIS630A_900_REV &&
1271 (sis_priv->host_bridge_rev == SIS630B0 ||
1272 sis_priv->host_bridge_rev == SIS630B1)) {
1276 eq_value = (max_value + min_value + 1)/2;
1278 /* write equalizer value and setting */
1279 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1280 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1281 reg14h = (reg14h | 0x6000) & 0xFDFF;
1282 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1284 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1285 if (revision == SIS630A_900_REV &&
1286 (sis_priv->host_bridge_rev == SIS630B0 ||
1287 sis_priv->host_bridge_rev == SIS630B1))
1288 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1289 (reg14h | 0x2200) & 0xBFFF);
1291 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1292 (reg14h | 0x2000) & 0xBFFF);
1297 * sis900_timer - sis900 timer routine
1298 * @data: pointer to sis900 net device
1300 * On each timer ticks we check two things,
1301 * link status (ON/OFF) and link mode (10/100/Full/Half)
1304 static void sis900_timer(unsigned long data)
1306 struct net_device *net_dev = (struct net_device *)data;
1307 struct sis900_private *sis_priv = netdev_priv(net_dev);
1308 struct mii_phy *mii_phy = sis_priv->mii;
1309 static const int next_tick = 5*HZ;
1310 int speed = 0, duplex = 0;
1313 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1314 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1316 /* Link OFF -> ON */
1317 if (!netif_carrier_ok(net_dev)) {
1319 /* Search for new PHY */
1320 status = sis900_default_phy(net_dev);
1321 mii_phy = sis_priv->mii;
1323 if (status & MII_STAT_LINK) {
1324 WARN_ON(!(status & MII_STAT_AUTO_DONE));
1326 sis900_read_mode(net_dev, &speed, &duplex);
1328 sis900_set_mode(sis_priv, speed, duplex);
1329 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1330 netif_carrier_on(net_dev);
1334 /* Link ON -> OFF */
1335 if (!(status & MII_STAT_LINK)){
1336 netif_carrier_off(net_dev);
1337 if(netif_msg_link(sis_priv))
1338 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1340 /* Change mode issue */
1341 if ((mii_phy->phy_id0 == 0x001D) &&
1342 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1343 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1345 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1351 sis_priv->timer.expires = jiffies + next_tick;
1352 add_timer(&sis_priv->timer);
1356 * sis900_check_mode - check the media mode for sis900
1357 * @net_dev: the net device to be checked
1358 * @mii_phy: the mii phy
1360 * Older driver gets the media mode from mii status output
1361 * register. Now we set our media capability and auto-negotiate
1362 * to get the upper bound of speed and duplex between two ends.
1363 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1364 * and autong_complete should be set to 1.
1367 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1369 struct sis900_private *sis_priv = netdev_priv(net_dev);
1370 void __iomem *ioaddr = sis_priv->ioaddr;
1373 if (mii_phy->phy_types == LAN) {
1374 sw32(cfg, ~EXD & sr32(cfg));
1375 sis900_set_capability(net_dev , mii_phy);
1376 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1378 sw32(cfg, EXD | sr32(cfg));
1379 speed = HW_SPEED_HOME;
1380 duplex = FDX_CAPABLE_HALF_SELECTED;
1381 sis900_set_mode(sis_priv, speed, duplex);
1382 sis_priv->autong_complete = 1;
1387 * sis900_set_mode - Set the media mode of mac register.
1388 * @sp: the device private data
1389 * @speed : the transmit speed to be determined
1390 * @duplex: the duplex mode to be determined
1392 * Set the media mode of mac register txcfg/rxcfg according to
1393 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1394 * bus is used instead of PCI bus. When this bit is set 1, the
1395 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1399 static void sis900_set_mode(struct sis900_private *sp, int speed, int duplex)
1401 void __iomem *ioaddr = sp->ioaddr;
1402 u32 tx_flags = 0, rx_flags = 0;
1404 if (sr32( cfg) & EDB_MASTER_EN) {
1405 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1406 (TX_FILL_THRESH << TxFILLT_shift);
1407 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1409 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1410 (TX_FILL_THRESH << TxFILLT_shift);
1411 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1414 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1415 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1416 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1418 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1419 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1422 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1423 tx_flags |= (TxCSI | TxHBI);
1427 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1428 /* Can accept Jumbo packet */
1432 sw32(txcfg, tx_flags);
1433 sw32(rxcfg, rx_flags);
1437 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1438 * @net_dev: the net device to read mode for
1439 * @phy_addr: mii phy address
1441 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1442 * autong_complete should be set to 0 when starting auto-negotiation.
1443 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1444 * sis900_timer will wait for link on again if autong_complete = 0.
1447 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1449 struct sis900_private *sis_priv = netdev_priv(net_dev);
1453 for (i = 0; i < 2; i++)
1454 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1456 if (!(status & MII_STAT_LINK)){
1457 if(netif_msg_link(sis_priv))
1458 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1459 sis_priv->autong_complete = 1;
1460 netif_carrier_off(net_dev);
1464 /* (Re)start AutoNegotiate */
1465 mdio_write(net_dev, phy_addr, MII_CONTROL,
1466 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1467 sis_priv->autong_complete = 0;
1472 * sis900_read_mode - read media mode for sis900 internal phy
1473 * @net_dev: the net device to read mode for
1474 * @speed : the transmit speed to be determined
1475 * @duplex : the duplex mode to be determined
1477 * The capability of remote end will be put in mii register autorec
1478 * after auto-negotiation. Use AND operation to get the upper bound
1479 * of speed and duplex between two ends.
1482 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1484 struct sis900_private *sis_priv = netdev_priv(net_dev);
1485 struct mii_phy *phy = sis_priv->mii;
1486 int phy_addr = sis_priv->cur_phy;
1488 u16 autoadv, autorec;
1491 for (i = 0; i < 2; i++)
1492 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1494 if (!(status & MII_STAT_LINK))
1497 /* AutoNegotiate completed */
1498 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1499 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1500 status = autoadv & autorec;
1502 *speed = HW_SPEED_10_MBPS;
1503 *duplex = FDX_CAPABLE_HALF_SELECTED;
1505 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1506 *speed = HW_SPEED_100_MBPS;
1507 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1508 *duplex = FDX_CAPABLE_FULL_SELECTED;
1510 sis_priv->autong_complete = 1;
1512 /* Workaround for Realtek RTL8201 PHY issue */
1513 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1514 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1515 *duplex = FDX_CAPABLE_FULL_SELECTED;
1516 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1517 *speed = HW_SPEED_100_MBPS;
1520 if(netif_msg_link(sis_priv))
1521 printk(KERN_INFO "%s: Media Link On %s %s-duplex\n",
1523 *speed == HW_SPEED_100_MBPS ?
1524 "100mbps" : "10mbps",
1525 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1530 * sis900_tx_timeout - sis900 transmit timeout routine
1531 * @net_dev: the net device to transmit
1533 * print transmit timeout status
1534 * disable interrupts and do some tasks
1537 static void sis900_tx_timeout(struct net_device *net_dev)
1539 struct sis900_private *sis_priv = netdev_priv(net_dev);
1540 void __iomem *ioaddr = sis_priv->ioaddr;
1541 unsigned long flags;
1544 if (netif_msg_tx_err(sis_priv)) {
1545 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x\n",
1546 net_dev->name, sr32(cr), sr32(isr));
1549 /* Disable interrupts by clearing the interrupt mask. */
1552 /* use spinlock to prevent interrupt handler accessing buffer ring */
1553 spin_lock_irqsave(&sis_priv->lock, flags);
1555 /* discard unsent packets */
1556 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1557 for (i = 0; i < NUM_TX_DESC; i++) {
1558 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1561 pci_unmap_single(sis_priv->pci_dev,
1562 sis_priv->tx_ring[i].bufptr, skb->len,
1564 dev_kfree_skb_irq(skb);
1565 sis_priv->tx_skbuff[i] = NULL;
1566 sis_priv->tx_ring[i].cmdsts = 0;
1567 sis_priv->tx_ring[i].bufptr = 0;
1568 net_dev->stats.tx_dropped++;
1571 sis_priv->tx_full = 0;
1572 netif_wake_queue(net_dev);
1574 spin_unlock_irqrestore(&sis_priv->lock, flags);
1576 net_dev->trans_start = jiffies; /* prevent tx timeout */
1578 /* load Transmit Descriptor Register */
1579 sw32(txdp, sis_priv->tx_ring_dma);
1581 /* Enable all known interrupts by setting the interrupt mask. */
1582 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE | TxDESC);
1586 * sis900_start_xmit - sis900 start transmit routine
1587 * @skb: socket buffer pointer to put the data being transmitted
1588 * @net_dev: the net device to transmit with
1590 * Set the transmit buffer descriptor,
1591 * and write TxENA to enable transmit state machine.
1592 * tell upper layer if the buffer is full
1596 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1598 struct sis900_private *sis_priv = netdev_priv(net_dev);
1599 void __iomem *ioaddr = sis_priv->ioaddr;
1601 unsigned long flags;
1602 unsigned int index_cur_tx, index_dirty_tx;
1603 unsigned int count_dirty_tx;
1605 spin_lock_irqsave(&sis_priv->lock, flags);
1607 /* Calculate the next Tx descriptor entry. */
1608 entry = sis_priv->cur_tx % NUM_TX_DESC;
1609 sis_priv->tx_skbuff[entry] = skb;
1611 /* set the transmit buffer descriptor and enable Transmit State Machine */
1612 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1613 skb->data, skb->len, PCI_DMA_TODEVICE);
1614 if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev,
1615 sis_priv->tx_ring[entry].bufptr))) {
1616 dev_kfree_skb_any(skb);
1617 sis_priv->tx_skbuff[entry] = NULL;
1618 net_dev->stats.tx_dropped++;
1619 spin_unlock_irqrestore(&sis_priv->lock, flags);
1620 return NETDEV_TX_OK;
1622 sis_priv->tx_ring[entry].cmdsts = (OWN | INTR | skb->len);
1623 sw32(cr, TxENA | sr32(cr));
1625 sis_priv->cur_tx ++;
1626 index_cur_tx = sis_priv->cur_tx;
1627 index_dirty_tx = sis_priv->dirty_tx;
1629 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1632 if (index_cur_tx == index_dirty_tx) {
1633 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1634 sis_priv->tx_full = 1;
1635 netif_stop_queue(net_dev);
1636 } else if (count_dirty_tx < NUM_TX_DESC) {
1637 /* Typical path, tell upper layer that more transmission is possible */
1638 netif_start_queue(net_dev);
1640 /* buffer full, tell upper layer no more transmission */
1641 sis_priv->tx_full = 1;
1642 netif_stop_queue(net_dev);
1645 spin_unlock_irqrestore(&sis_priv->lock, flags);
1647 if (netif_msg_tx_queued(sis_priv))
1648 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1650 net_dev->name, skb->data, (int)skb->len, entry);
1652 return NETDEV_TX_OK;
1656 * sis900_interrupt - sis900 interrupt handler
1657 * @irq: the irq number
1658 * @dev_instance: the client data object
1660 * The interrupt handler does all of the Rx thread work,
1661 * and cleans up after the Tx thread
1664 static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
1666 struct net_device *net_dev = dev_instance;
1667 struct sis900_private *sis_priv = netdev_priv(net_dev);
1668 int boguscnt = max_interrupt_work;
1669 void __iomem *ioaddr = sis_priv->ioaddr;
1671 unsigned int handled = 0;
1673 spin_lock (&sis_priv->lock);
1678 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|TxDESC|RxORN|RxERR|RxOK)) == 0)
1679 /* nothing intresting happened */
1683 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1684 if (status & (RxORN | RxERR | RxOK))
1688 if (status & (TxURN | TxERR | TxIDLE | TxDESC))
1690 sis900_finish_xmit(net_dev);
1692 /* something strange happened !!! */
1693 if (status & HIBERR) {
1694 if(netif_msg_intr(sis_priv))
1695 printk(KERN_INFO "%s: Abnormal interrupt, "
1696 "status %#8.8x.\n", net_dev->name, status);
1699 if (--boguscnt < 0) {
1700 if(netif_msg_intr(sis_priv))
1701 printk(KERN_INFO "%s: Too much work at interrupt, "
1702 "interrupt status = %#8.8x.\n",
1703 net_dev->name, status);
1708 if(netif_msg_intr(sis_priv))
1709 printk(KERN_DEBUG "%s: exiting interrupt, "
1710 "interrupt status = %#8.8x\n",
1711 net_dev->name, sr32(isr));
1713 spin_unlock (&sis_priv->lock);
1714 return IRQ_RETVAL(handled);
1718 * sis900_rx - sis900 receive routine
1719 * @net_dev: the net device which receives data
1721 * Process receive interrupt events,
1722 * put buffer to higher layer and refill buffer pool
1723 * Note: This function is called by interrupt handler,
1724 * don't do "too much" work here
1727 static int sis900_rx(struct net_device *net_dev)
1729 struct sis900_private *sis_priv = netdev_priv(net_dev);
1730 void __iomem *ioaddr = sis_priv->ioaddr;
1731 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1732 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1735 if (netif_msg_rx_status(sis_priv))
1736 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1738 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1739 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
1741 while (rx_status & OWN) {
1742 unsigned int rx_size;
1743 unsigned int data_size;
1745 if (--rx_work_limit < 0)
1748 data_size = rx_status & DSIZE;
1749 rx_size = data_size - CRC_SIZE;
1751 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1752 /* ``TOOLONG'' flag means jumbo packet received. */
1753 if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
1754 rx_status &= (~ ((unsigned int)TOOLONG));
1757 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1758 /* corrupted packet received */
1759 if (netif_msg_rx_err(sis_priv))
1760 printk(KERN_DEBUG "%s: Corrupted packet "
1761 "received, buffer status = 0x%8.8x/%d.\n",
1762 net_dev->name, rx_status, data_size);
1763 net_dev->stats.rx_errors++;
1764 if (rx_status & OVERRUN)
1765 net_dev->stats.rx_over_errors++;
1766 if (rx_status & (TOOLONG|RUNT))
1767 net_dev->stats.rx_length_errors++;
1768 if (rx_status & (RXISERR | FAERR))
1769 net_dev->stats.rx_frame_errors++;
1770 if (rx_status & CRCERR)
1771 net_dev->stats.rx_crc_errors++;
1772 /* reset buffer descriptor state */
1773 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1775 struct sk_buff * skb;
1776 struct sk_buff * rx_skb;
1778 pci_unmap_single(sis_priv->pci_dev,
1779 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1780 PCI_DMA_FROMDEVICE);
1782 /* refill the Rx buffer, what if there is not enough
1783 * memory for new socket buffer ?? */
1784 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1786 * Not enough memory to refill the buffer
1787 * so we need to recycle the old one so
1788 * as to avoid creating a memory hole
1791 skb = sis_priv->rx_skbuff[entry];
1792 net_dev->stats.rx_dropped++;
1793 goto refill_rx_ring;
1796 /* This situation should never happen, but due to
1797 some unknown bugs, it is possible that
1798 we are working on NULL sk_buff :-( */
1799 if (sis_priv->rx_skbuff[entry] == NULL) {
1800 if (netif_msg_rx_err(sis_priv))
1801 printk(KERN_WARNING "%s: NULL pointer "
1802 "encountered in Rx ring\n"
1803 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1804 net_dev->name, sis_priv->cur_rx,
1805 sis_priv->dirty_rx);
1810 /* give the socket buffer to upper layers */
1811 rx_skb = sis_priv->rx_skbuff[entry];
1812 skb_put(rx_skb, rx_size);
1813 rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
1816 /* some network statistics */
1817 if ((rx_status & BCAST) == MCAST)
1818 net_dev->stats.multicast++;
1819 net_dev->stats.rx_bytes += rx_size;
1820 net_dev->stats.rx_packets++;
1821 sis_priv->dirty_rx++;
1823 sis_priv->rx_skbuff[entry] = skb;
1824 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1825 sis_priv->rx_ring[entry].bufptr =
1826 pci_map_single(sis_priv->pci_dev, skb->data,
1827 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1828 if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev,
1829 sis_priv->rx_ring[entry].bufptr))) {
1830 dev_kfree_skb_irq(skb);
1831 sis_priv->rx_skbuff[entry] = NULL;
1836 entry = sis_priv->cur_rx % NUM_RX_DESC;
1837 rx_status = sis_priv->rx_ring[entry].cmdsts;
1840 /* refill the Rx buffer, what if the rate of refilling is slower
1841 * than consuming ?? */
1842 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
1843 struct sk_buff *skb;
1845 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1847 if (sis_priv->rx_skbuff[entry] == NULL) {
1848 skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE);
1850 /* not enough memory for skbuff, this makes a
1851 * "hole" on the buffer ring, it is not clear
1852 * how the hardware will react to this kind
1853 * of degenerated buffer */
1854 net_dev->stats.rx_dropped++;
1857 sis_priv->rx_skbuff[entry] = skb;
1858 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1859 sis_priv->rx_ring[entry].bufptr =
1860 pci_map_single(sis_priv->pci_dev, skb->data,
1861 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1862 if (unlikely(pci_dma_mapping_error(sis_priv->pci_dev,
1863 sis_priv->rx_ring[entry].bufptr))) {
1864 dev_kfree_skb_irq(skb);
1865 sis_priv->rx_skbuff[entry] = NULL;
1870 /* re-enable the potentially idle receive state matchine */
1871 sw32(cr , RxENA | sr32(cr));
1877 * sis900_finish_xmit - finish up transmission of packets
1878 * @net_dev: the net device to be transmitted on
1880 * Check for error condition and free socket buffer etc
1881 * schedule for more transmission as needed
1882 * Note: This function is called by interrupt handler,
1883 * don't do "too much" work here
1886 static void sis900_finish_xmit (struct net_device *net_dev)
1888 struct sis900_private *sis_priv = netdev_priv(net_dev);
1890 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1891 struct sk_buff *skb;
1895 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1896 tx_status = sis_priv->tx_ring[entry].cmdsts;
1898 if (tx_status & OWN) {
1899 /* The packet is not transmitted yet (owned by hardware) !
1900 * Note: this is an almost impossible condition
1901 * in case of TxDESC ('descriptor interrupt') */
1905 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1906 /* packet unsuccessfully transmitted */
1907 if (netif_msg_tx_err(sis_priv))
1908 printk(KERN_DEBUG "%s: Transmit "
1909 "error, Tx status %8.8x.\n",
1910 net_dev->name, tx_status);
1911 net_dev->stats.tx_errors++;
1912 if (tx_status & UNDERRUN)
1913 net_dev->stats.tx_fifo_errors++;
1914 if (tx_status & ABORT)
1915 net_dev->stats.tx_aborted_errors++;
1916 if (tx_status & NOCARRIER)
1917 net_dev->stats.tx_carrier_errors++;
1918 if (tx_status & OWCOLL)
1919 net_dev->stats.tx_window_errors++;
1921 /* packet successfully transmitted */
1922 net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
1923 net_dev->stats.tx_bytes += tx_status & DSIZE;
1924 net_dev->stats.tx_packets++;
1926 /* Free the original skb. */
1927 skb = sis_priv->tx_skbuff[entry];
1928 pci_unmap_single(sis_priv->pci_dev,
1929 sis_priv->tx_ring[entry].bufptr, skb->len,
1931 dev_kfree_skb_irq(skb);
1932 sis_priv->tx_skbuff[entry] = NULL;
1933 sis_priv->tx_ring[entry].bufptr = 0;
1934 sis_priv->tx_ring[entry].cmdsts = 0;
1937 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1938 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1939 /* The ring is no longer full, clear tx_full and schedule
1940 * more transmission by netif_wake_queue(net_dev) */
1941 sis_priv->tx_full = 0;
1942 netif_wake_queue (net_dev);
1947 * sis900_close - close sis900 device
1948 * @net_dev: the net device to be closed
1950 * Disable interrupts, stop the Tx and Rx Status Machine
1951 * free Tx and RX socket buffer
1954 static int sis900_close(struct net_device *net_dev)
1956 struct sis900_private *sis_priv = netdev_priv(net_dev);
1957 struct pci_dev *pdev = sis_priv->pci_dev;
1958 void __iomem *ioaddr = sis_priv->ioaddr;
1959 struct sk_buff *skb;
1962 netif_stop_queue(net_dev);
1964 /* Disable interrupts by clearing the interrupt mask. */
1968 /* Stop the chip's Tx and Rx Status Machine */
1969 sw32(cr, RxDIS | TxDIS | sr32(cr));
1971 del_timer(&sis_priv->timer);
1973 free_irq(pdev->irq, net_dev);
1975 /* Free Tx and RX skbuff */
1976 for (i = 0; i < NUM_RX_DESC; i++) {
1977 skb = sis_priv->rx_skbuff[i];
1979 pci_unmap_single(pdev, sis_priv->rx_ring[i].bufptr,
1980 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1982 sis_priv->rx_skbuff[i] = NULL;
1985 for (i = 0; i < NUM_TX_DESC; i++) {
1986 skb = sis_priv->tx_skbuff[i];
1988 pci_unmap_single(pdev, sis_priv->tx_ring[i].bufptr,
1989 skb->len, PCI_DMA_TODEVICE);
1991 sis_priv->tx_skbuff[i] = NULL;
1995 /* Green! Put the chip in low-power mode. */
2001 * sis900_get_drvinfo - Return information about driver
2002 * @net_dev: the net device to probe
2003 * @info: container for info returned
2005 * Process ethtool command such as "ehtool -i" to show information
2008 static void sis900_get_drvinfo(struct net_device *net_dev,
2009 struct ethtool_drvinfo *info)
2011 struct sis900_private *sis_priv = netdev_priv(net_dev);
2013 strlcpy(info->driver, SIS900_MODULE_NAME, sizeof(info->driver));
2014 strlcpy(info->version, SIS900_DRV_VERSION, sizeof(info->version));
2015 strlcpy(info->bus_info, pci_name(sis_priv->pci_dev),
2016 sizeof(info->bus_info));
2019 static u32 sis900_get_msglevel(struct net_device *net_dev)
2021 struct sis900_private *sis_priv = netdev_priv(net_dev);
2022 return sis_priv->msg_enable;
2025 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
2027 struct sis900_private *sis_priv = netdev_priv(net_dev);
2028 sis_priv->msg_enable = value;
2031 static u32 sis900_get_link(struct net_device *net_dev)
2033 struct sis900_private *sis_priv = netdev_priv(net_dev);
2034 return mii_link_ok(&sis_priv->mii_info);
2037 static int sis900_get_settings(struct net_device *net_dev,
2038 struct ethtool_cmd *cmd)
2040 struct sis900_private *sis_priv = netdev_priv(net_dev);
2041 spin_lock_irq(&sis_priv->lock);
2042 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2043 spin_unlock_irq(&sis_priv->lock);
2047 static int sis900_set_settings(struct net_device *net_dev,
2048 struct ethtool_cmd *cmd)
2050 struct sis900_private *sis_priv = netdev_priv(net_dev);
2052 spin_lock_irq(&sis_priv->lock);
2053 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2054 spin_unlock_irq(&sis_priv->lock);
2058 static int sis900_nway_reset(struct net_device *net_dev)
2060 struct sis900_private *sis_priv = netdev_priv(net_dev);
2061 return mii_nway_restart(&sis_priv->mii_info);
2065 * sis900_set_wol - Set up Wake on Lan registers
2066 * @net_dev: the net device to probe
2067 * @wol: container for info passed to the driver
2069 * Process ethtool command "wol" to setup wake on lan features.
2070 * SiS900 supports sending WoL events if a correct packet is received,
2071 * but there is no simple way to filter them to only a subset (broadcast,
2072 * multicast, unicast or arp).
2075 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2077 struct sis900_private *sis_priv = netdev_priv(net_dev);
2078 void __iomem *ioaddr = sis_priv->ioaddr;
2079 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2081 if (wol->wolopts == 0) {
2082 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2083 cfgpmcsr &= ~PME_EN;
2084 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2085 sw32(pmctrl, pmctrl_bits);
2086 if (netif_msg_wol(sis_priv))
2087 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2091 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2092 | WAKE_BCAST | WAKE_ARP))
2095 if (wol->wolopts & WAKE_MAGIC)
2096 pmctrl_bits |= MAGICPKT;
2097 if (wol->wolopts & WAKE_PHY)
2098 pmctrl_bits |= LINKON;
2100 sw32(pmctrl, pmctrl_bits);
2102 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2104 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2105 if (netif_msg_wol(sis_priv))
2106 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2111 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2113 struct sis900_private *sp = netdev_priv(net_dev);
2114 void __iomem *ioaddr = sp->ioaddr;
2117 pmctrl_bits = sr32(pmctrl);
2118 if (pmctrl_bits & MAGICPKT)
2119 wol->wolopts |= WAKE_MAGIC;
2120 if (pmctrl_bits & LINKON)
2121 wol->wolopts |= WAKE_PHY;
2123 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2126 static const struct ethtool_ops sis900_ethtool_ops = {
2127 .get_drvinfo = sis900_get_drvinfo,
2128 .get_msglevel = sis900_get_msglevel,
2129 .set_msglevel = sis900_set_msglevel,
2130 .get_link = sis900_get_link,
2131 .get_settings = sis900_get_settings,
2132 .set_settings = sis900_set_settings,
2133 .nway_reset = sis900_nway_reset,
2134 .get_wol = sis900_get_wol,
2135 .set_wol = sis900_set_wol
2139 * mii_ioctl - process MII i/o control command
2140 * @net_dev: the net device to command for
2141 * @rq: parameter for command
2142 * @cmd: the i/o command
2144 * Process MII command like read/write MII register
2147 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2149 struct sis900_private *sis_priv = netdev_priv(net_dev);
2150 struct mii_ioctl_data *data = if_mii(rq);
2153 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2154 data->phy_id = sis_priv->mii->phy_addr;
2157 case SIOCGMIIREG: /* Read MII PHY register. */
2158 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2161 case SIOCSMIIREG: /* Write MII PHY register. */
2162 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2170 * sis900_set_config - Set media type by net_device.set_config
2171 * @dev: the net device for media type change
2172 * @map: ifmap passed by ifconfig
2174 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2175 * we support only port changes. All other runtime configuration
2176 * changes will be ignored
2179 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2181 struct sis900_private *sis_priv = netdev_priv(dev);
2182 struct mii_phy *mii_phy = sis_priv->mii;
2186 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2187 /* we switch on the ifmap->port field. I couldn't find anything
2188 * like a definition or standard for the values of that field.
2189 * I think the meaning of those values is device specific. But
2190 * since I would like to change the media type via the ifconfig
2191 * command I use the definition from linux/netdevice.h
2192 * (which seems to be different from the ifport(pcmcia) definition) */
2194 case IF_PORT_UNKNOWN: /* use auto here */
2195 dev->if_port = map->port;
2196 /* we are going to change the media type, so the Link
2197 * will be temporary down and we need to reflect that
2198 * here. When the Link comes up again, it will be
2199 * sensed by the sis_timer procedure, which also does
2200 * all the rest for us */
2201 netif_carrier_off(dev);
2203 /* read current state */
2204 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2206 /* enable auto negotiation and reset the negotioation
2207 * (I don't really know what the auto negatiotiation
2208 * reset really means, but it sounds for me right to
2210 mdio_write(dev, mii_phy->phy_addr,
2211 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2215 case IF_PORT_10BASET: /* 10BaseT */
2216 dev->if_port = map->port;
2218 /* we are going to change the media type, so the Link
2219 * will be temporary down and we need to reflect that
2220 * here. When the Link comes up again, it will be
2221 * sensed by the sis_timer procedure, which also does
2222 * all the rest for us */
2223 netif_carrier_off(dev);
2225 /* set Speed to 10Mbps */
2226 /* read current state */
2227 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2229 /* disable auto negotiation and force 10MBit mode*/
2230 mdio_write(dev, mii_phy->phy_addr,
2231 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2235 case IF_PORT_100BASET: /* 100BaseT */
2236 case IF_PORT_100BASETX: /* 100BaseTx */
2237 dev->if_port = map->port;
2239 /* we are going to change the media type, so the Link
2240 * will be temporary down and we need to reflect that
2241 * here. When the Link comes up again, it will be
2242 * sensed by the sis_timer procedure, which also does
2243 * all the rest for us */
2244 netif_carrier_off(dev);
2246 /* set Speed to 100Mbps */
2247 /* disable auto negotiation and enable 100MBit Mode */
2248 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2249 mdio_write(dev, mii_phy->phy_addr,
2250 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2255 case IF_PORT_10BASE2: /* 10Base2 */
2256 case IF_PORT_AUI: /* AUI */
2257 case IF_PORT_100BASEFX: /* 100BaseFx */
2258 /* These Modes are not supported (are they?)*/
2269 * sis900_mcast_bitnr - compute hashtable index
2270 * @addr: multicast address
2271 * @revision: revision id of chip
2273 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2274 * hash table, which makes this function a little bit different from other drivers
2275 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2276 * multicast hash table.
2279 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2282 u32 crc = ether_crc(6, addr);
2284 /* leave 8 or 7 most siginifant bits */
2285 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2286 return (int)(crc >> 24);
2288 return (int)(crc >> 25);
2292 * set_rx_mode - Set SiS900 receive mode
2293 * @net_dev: the net device to be set
2295 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2296 * And set the appropriate multicast filter.
2297 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2300 static void set_rx_mode(struct net_device *net_dev)
2302 struct sis900_private *sis_priv = netdev_priv(net_dev);
2303 void __iomem *ioaddr = sis_priv->ioaddr;
2304 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2305 int i, table_entries;
2308 /* 635 Hash Table entries = 256(2^16) */
2309 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2310 (sis_priv->chipset_rev == SIS900B_900_REV))
2315 if (net_dev->flags & IFF_PROMISC) {
2316 /* Accept any kinds of packets */
2317 rx_mode = RFPromiscuous;
2318 for (i = 0; i < table_entries; i++)
2319 mc_filter[i] = 0xffff;
2320 } else if ((netdev_mc_count(net_dev) > multicast_filter_limit) ||
2321 (net_dev->flags & IFF_ALLMULTI)) {
2322 /* too many multicast addresses or accept all multicast packet */
2323 rx_mode = RFAAB | RFAAM;
2324 for (i = 0; i < table_entries; i++)
2325 mc_filter[i] = 0xffff;
2327 /* Accept Broadcast packet, destination address matchs our
2328 * MAC address, use Receive Filter to reject unwanted MCAST
2330 struct netdev_hw_addr *ha;
2333 netdev_for_each_mc_addr(ha, net_dev) {
2334 unsigned int bit_nr;
2336 bit_nr = sis900_mcast_bitnr(ha->addr,
2337 sis_priv->chipset_rev);
2338 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2342 /* update Multicast Hash Table in Receive Filter */
2343 for (i = 0; i < table_entries; i++) {
2344 /* why plus 0x04 ??, That makes the correct value for hash table. */
2345 sw32(rfcr, (u32)(0x00000004 + i) << RFADDR_shift);
2346 sw32(rfdr, mc_filter[i]);
2349 sw32(rfcr, RFEN | rx_mode);
2351 /* sis900 is capable of looping back packets at MAC level for
2352 * debugging purpose */
2353 if (net_dev->flags & IFF_LOOPBACK) {
2355 /* We must disable Tx/Rx before setting loopback mode */
2356 cr_saved = sr32(cr);
2357 sw32(cr, cr_saved | TxDIS | RxDIS);
2358 /* enable loopback */
2359 sw32(txcfg, sr32(txcfg) | TxMLB);
2360 sw32(rxcfg, sr32(rxcfg) | RxATX);
2367 * sis900_reset - Reset sis900 MAC
2368 * @net_dev: the net device to reset
2370 * reset sis900 MAC and wait until finished
2371 * reset through command register
2372 * change backoff algorithm for 900B0 & 635 M/B
2375 static void sis900_reset(struct net_device *net_dev)
2377 struct sis900_private *sis_priv = netdev_priv(net_dev);
2378 void __iomem *ioaddr = sis_priv->ioaddr;
2379 u32 status = TxRCMP | RxRCMP;
2386 sw32(cr, RxRESET | TxRESET | RESET | sr32(cr));
2388 /* Check that the chip has finished the reset. */
2389 for (i = 0; status && (i < 1000); i++)
2390 status ^= sr32(isr) & status;
2392 if (sis_priv->chipset_rev >= SIS635A_900_REV ||
2393 sis_priv->chipset_rev == SIS900B_900_REV)
2394 sw32(cfg, PESEL | RND_CNT);
2400 * sis900_remove - Remove sis900 device
2401 * @pci_dev: the pci device to be removed
2403 * remove and release SiS900 net device
2406 static void sis900_remove(struct pci_dev *pci_dev)
2408 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2409 struct sis900_private *sis_priv = netdev_priv(net_dev);
2411 unregister_netdev(net_dev);
2413 while (sis_priv->first_mii) {
2414 struct mii_phy *phy = sis_priv->first_mii;
2416 sis_priv->first_mii = phy->next;
2420 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2421 sis_priv->rx_ring_dma);
2422 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2423 sis_priv->tx_ring_dma);
2424 pci_iounmap(pci_dev, sis_priv->ioaddr);
2425 free_netdev(net_dev);
2430 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2432 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2433 struct sis900_private *sis_priv = netdev_priv(net_dev);
2434 void __iomem *ioaddr = sis_priv->ioaddr;
2436 if(!netif_running(net_dev))
2439 netif_stop_queue(net_dev);
2440 netif_device_detach(net_dev);
2442 /* Stop the chip's Tx and Rx Status Machine */
2443 sw32(cr, RxDIS | TxDIS | sr32(cr));
2445 pci_set_power_state(pci_dev, PCI_D3hot);
2446 pci_save_state(pci_dev);
2451 static int sis900_resume(struct pci_dev *pci_dev)
2453 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2454 struct sis900_private *sis_priv = netdev_priv(net_dev);
2455 void __iomem *ioaddr = sis_priv->ioaddr;
2457 if(!netif_running(net_dev))
2459 pci_restore_state(pci_dev);
2460 pci_set_power_state(pci_dev, PCI_D0);
2462 sis900_init_rxfilter(net_dev);
2464 sis900_init_tx_ring(net_dev);
2465 sis900_init_rx_ring(net_dev);
2467 set_rx_mode(net_dev);
2469 netif_device_attach(net_dev);
2470 netif_start_queue(net_dev);
2472 /* Workaround for EDB */
2473 sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2475 /* Enable all known interrupts by setting the interrupt mask. */
2476 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE | TxDESC);
2477 sw32(cr, RxENA | sr32(cr));
2480 sis900_check_mode(net_dev, sis_priv->mii);
2484 #endif /* CONFIG_PM */
2486 static struct pci_driver sis900_pci_driver = {
2487 .name = SIS900_MODULE_NAME,
2488 .id_table = sis900_pci_tbl,
2489 .probe = sis900_probe,
2490 .remove = sis900_remove,
2492 .suspend = sis900_suspend,
2493 .resume = sis900_resume,
2494 #endif /* CONFIG_PM */
2497 static int __init sis900_init_module(void)
2499 /* when a module, this is printed whether or not devices are found in probe */
2504 return pci_register_driver(&sis900_pci_driver);
2507 static void __exit sis900_cleanup_module(void)
2509 pci_unregister_driver(&sis900_pci_driver);
2512 module_init(sis900_init_module);
2513 module_exit(sis900_cleanup_module);