1 /* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
2 Copyright 1999 Silicon Integrated System Corporation
3 Revision: 1.08.10 Apr. 2 2006
5 Modified from the driver which is originally written by Donald Becker.
7 This software may be used and distributed according to the terms
8 of the GNU General Public License (GPL), incorporated herein by reference.
9 Drivers based on this skeleton fall under the GPL and must retain
10 the authorship (implicit copyright) notice.
13 SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
14 preliminary Rev. 1.0 Jan. 14, 1998
15 SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
16 preliminary Rev. 1.0 Nov. 10, 1998
17 SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
18 preliminary Rev. 1.0 Jan. 18, 1998
20 Rev 1.08.10 Apr. 2 2006 Daniele Venzano add vlan (jumbo packets) support
21 Rev 1.08.09 Sep. 19 2005 Daniele Venzano add Wake on LAN support
22 Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages
23 Rev 1.08.07 Nov. 2 2003 Daniele Venzano <venza@brownhat.org> add suspend/resume support
24 Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support
25 Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary
26 Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support
27 Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function
28 Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem
29 Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY
30 Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix
31 Rev 1.07.11 Apr. 2 2001 Hui-Fen Hsu updates PCI drivers to use the new pci_set_dma_mask for kernel 2.4.3
32 Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support
33 Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup
34 Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support
35 Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix
36 Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning
37 Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig
38 Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support
39 Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E eqaulizer workaround rule
40 Rev 1.07.01 Aug. 08 2000 Ollie Lho minor update for SiS 630E and SiS 630E A1
41 Rev 1.07 Mar. 07 2000 Ollie Lho bug fix in Rx buffer ring
42 Rev 1.06.04 Feb. 11 2000 Jeff Garzik <jgarzik@pobox.com> softnet and init for kernel 2.4
43 Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release
44 Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed
45 Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com)
46 Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release
47 Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx
48 Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support
49 Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release
52 #include <linux/module.h>
53 #include <linux/moduleparam.h>
54 #include <linux/kernel.h>
55 #include <linux/string.h>
56 #include <linux/timer.h>
57 #include <linux/errno.h>
58 #include <linux/ioport.h>
59 #include <linux/slab.h>
60 #include <linux/interrupt.h>
61 #include <linux/pci.h>
62 #include <linux/netdevice.h>
63 #include <linux/init.h>
64 #include <linux/mii.h>
65 #include <linux/etherdevice.h>
66 #include <linux/skbuff.h>
67 #include <linux/delay.h>
68 #include <linux/ethtool.h>
69 #include <linux/crc32.h>
70 #include <linux/bitops.h>
71 #include <linux/dma-mapping.h>
73 #include <asm/processor.h> /* Processor type for cache alignment. */
76 #include <asm/uaccess.h> /* User space memory access functions */
80 #define SIS900_MODULE_NAME "sis900"
81 #define SIS900_DRV_VERSION "v1.08.10 Apr. 2 2006"
83 static char version[] __devinitdata =
84 KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
86 static int max_interrupt_work = 40;
87 static int multicast_filter_limit = 128;
89 static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
91 #define SIS900_DEF_MSG \
97 /* Time in jiffies before concluding the transmitter is hung. */
98 #define TX_TIMEOUT (4*HZ)
104 static const char * card_names[] = {
105 "SiS 900 PCI Fast Ethernet",
106 "SiS 7016 PCI Fast Ethernet"
108 static struct pci_device_id sis900_pci_tbl [] = {
109 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900,
110 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900},
111 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016,
112 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016},
115 MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
117 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
119 static const struct mii_chip_info {
128 } mii_chip_table[] = {
129 { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
130 { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
131 { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
132 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
133 { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
134 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
135 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
136 { "ICS LAN PHY", 0x0015, 0xF440, LAN },
137 { "ICS LAN PHY", 0x0143, 0xBC70, LAN },
138 { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
139 { "NS 83847 PHY", 0x2000, 0x5C30, MIX },
140 { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
141 { "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
146 struct mii_phy * next;
154 typedef struct _BufferDesc {
160 struct sis900_private {
161 struct pci_dev * pci_dev;
165 struct mii_phy * mii;
166 struct mii_phy * first_mii; /* record the first mii structure */
167 unsigned int cur_phy;
168 struct mii_if_info mii_info;
170 struct timer_list timer; /* Link status detection timer. */
171 u8 autong_complete; /* 1: auto-negotiate complete */
175 unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
176 unsigned int cur_tx, dirty_tx;
178 /* The saved address of a sent/receive-in-place packet buffer */
179 struct sk_buff *tx_skbuff[NUM_TX_DESC];
180 struct sk_buff *rx_skbuff[NUM_RX_DESC];
184 dma_addr_t tx_ring_dma;
185 dma_addr_t rx_ring_dma;
187 unsigned int tx_full; /* The Tx queue is full. */
192 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
193 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
194 MODULE_LICENSE("GPL");
196 module_param(multicast_filter_limit, int, 0444);
197 module_param(max_interrupt_work, int, 0444);
198 module_param(sis900_debug, int, 0444);
199 MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
200 MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
201 MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
203 #ifdef CONFIG_NET_POLL_CONTROLLER
204 static void sis900_poll(struct net_device *dev);
206 static int sis900_open(struct net_device *net_dev);
207 static int sis900_mii_probe (struct net_device * net_dev);
208 static void sis900_init_rxfilter (struct net_device * net_dev);
209 static u16 read_eeprom(long ioaddr, int location);
210 static int mdio_read(struct net_device *net_dev, int phy_id, int location);
211 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
212 static void sis900_timer(unsigned long data);
213 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
214 static void sis900_tx_timeout(struct net_device *net_dev);
215 static void sis900_init_tx_ring(struct net_device *net_dev);
216 static void sis900_init_rx_ring(struct net_device *net_dev);
217 static int sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
218 static int sis900_rx(struct net_device *net_dev);
219 static void sis900_finish_xmit (struct net_device *net_dev);
220 static irqreturn_t sis900_interrupt(int irq, void *dev_instance);
221 static int sis900_close(struct net_device *net_dev);
222 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
223 static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
224 static void set_rx_mode(struct net_device *net_dev);
225 static void sis900_reset(struct net_device *net_dev);
226 static void sis630_set_eq(struct net_device *net_dev, u8 revision);
227 static int sis900_set_config(struct net_device *dev, struct ifmap *map);
228 static u16 sis900_default_phy(struct net_device * net_dev);
229 static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
230 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
231 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
232 static void sis900_set_mode (long ioaddr, int speed, int duplex);
233 static const struct ethtool_ops sis900_ethtool_ops;
236 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
237 * @pci_dev: the sis900 pci device
238 * @net_dev: the net device to get address for
240 * Older SiS900 and friends, use EEPROM to store MAC address.
241 * MAC address is read from read_eeprom() into @net_dev->dev_addr.
244 static int __devinit sis900_get_mac_addr(struct pci_dev * pci_dev, struct net_device *net_dev)
246 long ioaddr = pci_resource_start(pci_dev, 0);
250 /* check to see if we have sane EEPROM */
251 signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
252 if (signature == 0xffff || signature == 0x0000) {
253 printk (KERN_WARNING "%s: Error EERPOM read %x\n",
254 pci_name(pci_dev), signature);
258 /* get MAC address from EEPROM */
259 for (i = 0; i < 3; i++)
260 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
266 * sis630e_get_mac_addr - Get MAC address for SiS630E model
267 * @pci_dev: the sis900 pci device
268 * @net_dev: the net device to get address for
270 * SiS630E model, use APC CMOS RAM to store MAC address.
271 * APC CMOS RAM is accessed through ISA bridge.
272 * MAC address is read into @net_dev->dev_addr.
275 static int __devinit sis630e_get_mac_addr(struct pci_dev * pci_dev,
276 struct net_device *net_dev)
278 struct pci_dev *isa_bridge = NULL;
282 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
284 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
286 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
290 pci_read_config_byte(isa_bridge, 0x48, ®);
291 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
293 for (i = 0; i < 6; i++) {
294 outb(0x09 + i, 0x70);
295 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
297 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
298 pci_dev_put(isa_bridge);
305 * sis635_get_mac_addr - Get MAC address for SIS635 model
306 * @pci_dev: the sis900 pci device
307 * @net_dev: the net device to get address for
309 * SiS635 model, set MAC Reload Bit to load Mac address from APC
310 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
311 * @net_dev->dev_addr.
314 static int __devinit sis635_get_mac_addr(struct pci_dev * pci_dev,
315 struct net_device *net_dev)
317 long ioaddr = net_dev->base_addr;
321 rfcrSave = inl(rfcr + ioaddr);
323 outl(rfcrSave | RELOAD, ioaddr + cr);
324 outl(0, ioaddr + cr);
326 /* disable packet filtering before setting filter */
327 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
329 /* load MAC addr to filter data register */
330 for (i = 0 ; i < 3 ; i++) {
331 outl((i << RFADDR_shift), ioaddr + rfcr);
332 *( ((u16 *)net_dev->dev_addr) + i) = inw(ioaddr + rfdr);
335 /* enable packet filtering */
336 outl(rfcrSave | RFEN, rfcr + ioaddr);
342 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
343 * @pci_dev: the sis900 pci device
344 * @net_dev: the net device to get address for
346 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
348 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
349 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
350 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
351 * EEDONE signal to refuse EEPROM access by LAN.
352 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
353 * The signature field in SiS962 or SiS963 spec is meaningless.
354 * MAC address is read into @net_dev->dev_addr.
357 static int __devinit sis96x_get_mac_addr(struct pci_dev * pci_dev,
358 struct net_device *net_dev)
360 long ioaddr = net_dev->base_addr;
361 long ee_addr = ioaddr + mear;
365 outl(EEREQ, ee_addr);
366 while(waittime < 2000) {
367 if(inl(ee_addr) & EEGNT) {
369 /* get MAC address from EEPROM */
370 for (i = 0; i < 3; i++)
371 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
373 outl(EEDONE, ee_addr);
380 outl(EEDONE, ee_addr);
385 * sis900_probe - Probe for sis900 device
386 * @pci_dev: the sis900 pci device
387 * @pci_id: the pci device ID
389 * Check and probe sis900 net device for @pci_dev.
390 * Get mac address according to the chip revision,
391 * and assign SiS900-specific entries in the device structure.
392 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
395 static int __devinit sis900_probe(struct pci_dev *pci_dev,
396 const struct pci_device_id *pci_id)
398 struct sis900_private *sis_priv;
399 struct net_device *net_dev;
405 const char *card_name = card_names[pci_id->driver_data];
406 const char *dev_name = pci_name(pci_dev);
408 /* when built into the kernel, we only print version if device is found */
410 static int printed_version;
411 if (!printed_version++)
415 /* setup various bits in PCI command register */
416 ret = pci_enable_device(pci_dev);
419 i = pci_set_dma_mask(pci_dev, DMA_32BIT_MASK);
421 printk(KERN_ERR "sis900.c: architecture does not support"
422 "32bit PCI busmaster DMA\n");
426 pci_set_master(pci_dev);
428 net_dev = alloc_etherdev(sizeof(struct sis900_private));
431 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
433 /* We do a request_region() to register /proc/ioports info. */
434 ioaddr = pci_resource_start(pci_dev, 0);
435 ret = pci_request_regions(pci_dev, "sis900");
439 sis_priv = net_dev->priv;
440 net_dev->base_addr = ioaddr;
441 net_dev->irq = pci_dev->irq;
442 sis_priv->pci_dev = pci_dev;
443 spin_lock_init(&sis_priv->lock);
445 pci_set_drvdata(pci_dev, net_dev);
447 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
450 goto err_out_cleardev;
452 sis_priv->tx_ring = (BufferDesc *)ring_space;
453 sis_priv->tx_ring_dma = ring_dma;
455 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
460 sis_priv->rx_ring = (BufferDesc *)ring_space;
461 sis_priv->rx_ring_dma = ring_dma;
463 /* The SiS900-specific entries in the device structure. */
464 net_dev->open = &sis900_open;
465 net_dev->hard_start_xmit = &sis900_start_xmit;
466 net_dev->stop = &sis900_close;
467 net_dev->set_config = &sis900_set_config;
468 net_dev->set_multicast_list = &set_rx_mode;
469 net_dev->do_ioctl = &mii_ioctl;
470 net_dev->tx_timeout = sis900_tx_timeout;
471 net_dev->watchdog_timeo = TX_TIMEOUT;
472 net_dev->ethtool_ops = &sis900_ethtool_ops;
474 #ifdef CONFIG_NET_POLL_CONTROLLER
475 net_dev->poll_controller = &sis900_poll;
478 if (sis900_debug > 0)
479 sis_priv->msg_enable = sis900_debug;
481 sis_priv->msg_enable = SIS900_DEF_MSG;
483 sis_priv->mii_info.dev = net_dev;
484 sis_priv->mii_info.mdio_read = mdio_read;
485 sis_priv->mii_info.mdio_write = mdio_write;
486 sis_priv->mii_info.phy_id_mask = 0x1f;
487 sis_priv->mii_info.reg_num_mask = 0x1f;
489 /* Get Mac address according to the chip revision */
490 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &(sis_priv->chipset_rev));
491 if(netif_msg_probe(sis_priv))
492 printk(KERN_DEBUG "%s: detected revision %2.2x, "
493 "trying to get MAC address...\n",
494 dev_name, sis_priv->chipset_rev);
497 if (sis_priv->chipset_rev == SIS630E_900_REV)
498 ret = sis630e_get_mac_addr(pci_dev, net_dev);
499 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
500 ret = sis635_get_mac_addr(pci_dev, net_dev);
501 else if (sis_priv->chipset_rev == SIS96x_900_REV)
502 ret = sis96x_get_mac_addr(pci_dev, net_dev);
504 ret = sis900_get_mac_addr(pci_dev, net_dev);
507 printk(KERN_WARNING "%s: Cannot read MAC address.\n", dev_name);
512 /* 630ET : set the mii access mode as software-mode */
513 if (sis_priv->chipset_rev == SIS630ET_900_REV)
514 outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr);
516 /* probe for mii transceiver */
517 if (sis900_mii_probe(net_dev) == 0) {
518 printk(KERN_WARNING "%s: Error probing MII device.\n",
524 /* save our host bridge revision */
525 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
527 pci_read_config_byte(dev, PCI_CLASS_REVISION, &sis_priv->host_bridge_rev);
531 ret = register_netdev(net_dev);
535 /* print some information about our NIC */
536 printk(KERN_INFO "%s: %s at %#lx, IRQ %d, ", net_dev->name,
537 card_name, ioaddr, net_dev->irq);
538 for (i = 0; i < 5; i++)
539 printk("%2.2x:", (u8)net_dev->dev_addr[i]);
540 printk("%2.2x.\n", net_dev->dev_addr[i]);
542 /* Detect Wake on Lan support */
543 ret = (inl(net_dev->base_addr + CFGPMC) & PMESP) >> 27;
544 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
545 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
550 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
551 sis_priv->rx_ring_dma);
553 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
554 sis_priv->tx_ring_dma);
556 pci_set_drvdata(pci_dev, NULL);
557 pci_release_regions(pci_dev);
559 free_netdev(net_dev);
564 * sis900_mii_probe - Probe MII PHY for sis900
565 * @net_dev: the net device to probe for
567 * Search for total of 32 possible mii phy addresses.
568 * Identify and set current phy if found one,
569 * return error if it failed to found.
572 static int __devinit sis900_mii_probe(struct net_device * net_dev)
574 struct sis900_private * sis_priv = net_dev->priv;
575 const char *dev_name = pci_name(sis_priv->pci_dev);
576 u16 poll_bit = MII_STAT_LINK, status = 0;
577 unsigned long timeout = jiffies + 5 * HZ;
580 sis_priv->mii = NULL;
582 /* search for total of 32 possible mii phy addresses */
583 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
584 struct mii_phy * mii_phy = NULL;
589 for(i = 0; i < 2; i++)
590 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
592 if (mii_status == 0xffff || mii_status == 0x0000) {
593 if (netif_msg_probe(sis_priv))
594 printk(KERN_DEBUG "%s: MII at address %d"
600 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
601 printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n");
602 mii_phy = sis_priv->first_mii;
606 mii_phy = mii_phy->next;
612 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
613 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
614 mii_phy->phy_addr = phy_addr;
615 mii_phy->status = mii_status;
616 mii_phy->next = sis_priv->mii;
617 sis_priv->mii = mii_phy;
618 sis_priv->first_mii = mii_phy;
620 for (i = 0; mii_chip_table[i].phy_id1; i++)
621 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
622 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
623 mii_phy->phy_types = mii_chip_table[i].phy_types;
624 if (mii_chip_table[i].phy_types == MIX)
626 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
627 printk(KERN_INFO "%s: %s transceiver found "
630 mii_chip_table[i].name,
635 if( !mii_chip_table[i].phy_id1 ) {
636 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
638 mii_phy->phy_types = UNKNOWN;
642 if (sis_priv->mii == NULL) {
643 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
647 /* select default PHY for mac */
648 sis_priv->mii = NULL;
649 sis900_default_phy( net_dev );
651 /* Reset phy if default phy is internal sis900 */
652 if ((sis_priv->mii->phy_id0 == 0x001D) &&
653 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
654 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
656 /* workaround for ICS1893 PHY */
657 if ((sis_priv->mii->phy_id0 == 0x0015) &&
658 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
659 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
661 if(status & MII_STAT_LINK){
665 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
666 if (time_after_eq(jiffies, timeout)) {
667 printk(KERN_WARNING "%s: reset phy and link down now\n",
674 if (sis_priv->chipset_rev == SIS630E_900_REV) {
675 /* SiS 630E has some bugs on default value of PHY registers */
676 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
677 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
678 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
679 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
680 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
683 if (sis_priv->mii->status & MII_STAT_LINK)
684 netif_carrier_on(net_dev);
686 netif_carrier_off(net_dev);
692 * sis900_default_phy - Select default PHY for sis900 mac.
693 * @net_dev: the net device to probe for
695 * Select first detected PHY with link as default.
696 * If no one is link on, select PHY whose types is HOME as default.
697 * If HOME doesn't exist, select LAN.
700 static u16 sis900_default_phy(struct net_device * net_dev)
702 struct sis900_private * sis_priv = net_dev->priv;
703 struct mii_phy *phy = NULL, *phy_home = NULL,
704 *default_phy = NULL, *phy_lan = NULL;
707 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
708 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
709 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
711 /* Link ON & Not select default PHY & not ghost PHY */
712 if ((status & MII_STAT_LINK) && !default_phy &&
713 (phy->phy_types != UNKNOWN))
716 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
717 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
718 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
719 if (phy->phy_types == HOME)
721 else if(phy->phy_types == LAN)
726 if (!default_phy && phy_home)
727 default_phy = phy_home;
728 else if (!default_phy && phy_lan)
729 default_phy = phy_lan;
730 else if (!default_phy)
731 default_phy = sis_priv->first_mii;
733 if (sis_priv->mii != default_phy) {
734 sis_priv->mii = default_phy;
735 sis_priv->cur_phy = default_phy->phy_addr;
736 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
737 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
740 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
742 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
743 status &= (~MII_CNTL_ISOLATE);
745 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
746 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
747 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
754 * sis900_set_capability - set the media capability of network adapter.
755 * @net_dev : the net device to probe for
758 * Set the media capability of network adapter according to
759 * mii status register. It's necessary before auto-negotiate.
762 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
767 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
768 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
770 cap = MII_NWAY_CSMA_CD |
771 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
772 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
773 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
774 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
776 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
780 /* Delay between EEPROM clock transitions. */
781 #define eeprom_delay() inl(ee_addr)
784 * read_eeprom - Read Serial EEPROM
785 * @ioaddr: base i/o address
786 * @location: the EEPROM location to read
788 * Read Serial EEPROM through EEPROM Access Register.
789 * Note that location is in word (16 bits) unit
792 static u16 __devinit read_eeprom(long ioaddr, int location)
796 long ee_addr = ioaddr + mear;
797 u32 read_cmd = location | EEread;
804 /* Shift the read command (9) bits out. */
805 for (i = 8; i >= 0; i--) {
806 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
807 outl(dataval, ee_addr);
809 outl(dataval | EECLK, ee_addr);
815 /* read the 16-bits data in */
816 for (i = 16; i > 0; i--) {
819 outl(EECS | EECLK, ee_addr);
821 retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
825 /* Terminate the EEPROM access. */
832 /* Read and write the MII management registers using software-generated
833 serial MDIO protocol. Note that the command bits and data bits are
834 send out separately */
835 #define mdio_delay() inl(mdio_addr)
837 static void mdio_idle(long mdio_addr)
839 outl(MDIO | MDDIR, mdio_addr);
841 outl(MDIO | MDDIR | MDC, mdio_addr);
844 /* Syncronize the MII management interface by shifting 32 one bits out. */
845 static void mdio_reset(long mdio_addr)
849 for (i = 31; i >= 0; i--) {
850 outl(MDDIR | MDIO, mdio_addr);
852 outl(MDDIR | MDIO | MDC, mdio_addr);
859 * mdio_read - read MII PHY register
860 * @net_dev: the net device to read
861 * @phy_id: the phy address to read
862 * @location: the phy regiester id to read
864 * Read MII registers through MDIO and MDC
865 * using MDIO management frame structure and protocol(defined by ISO/IEC).
866 * Please see SiS7014 or ICS spec
869 static int mdio_read(struct net_device *net_dev, int phy_id, int location)
871 long mdio_addr = net_dev->base_addr + mear;
872 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
876 mdio_reset(mdio_addr);
877 mdio_idle(mdio_addr);
879 for (i = 15; i >= 0; i--) {
880 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
881 outl(dataval, mdio_addr);
883 outl(dataval | MDC, mdio_addr);
887 /* Read the 16 data bits. */
888 for (i = 16; i > 0; i--) {
891 retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
892 outl(MDC, mdio_addr);
895 outl(0x00, mdio_addr);
901 * mdio_write - write MII PHY register
902 * @net_dev: the net device to write
903 * @phy_id: the phy address to write
904 * @location: the phy regiester id to write
905 * @value: the register value to write with
907 * Write MII registers with @value through MDIO and MDC
908 * using MDIO management frame structure and protocol(defined by ISO/IEC)
909 * please see SiS7014 or ICS spec
912 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
915 long mdio_addr = net_dev->base_addr + mear;
916 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
919 mdio_reset(mdio_addr);
920 mdio_idle(mdio_addr);
922 /* Shift the command bits out. */
923 for (i = 15; i >= 0; i--) {
924 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
925 outb(dataval, mdio_addr);
927 outb(dataval | MDC, mdio_addr);
932 /* Shift the value bits out. */
933 for (i = 15; i >= 0; i--) {
934 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
935 outl(dataval, mdio_addr);
937 outl(dataval | MDC, mdio_addr);
942 /* Clear out extra bits. */
943 for (i = 2; i > 0; i--) {
946 outb(MDC, mdio_addr);
949 outl(0x00, mdio_addr);
956 * sis900_reset_phy - reset sis900 mii phy.
957 * @net_dev: the net device to write
958 * @phy_addr: default phy address
960 * Some specific phy can't work properly without reset.
961 * This function will be called during initialization and
962 * link status change from ON to DOWN.
965 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
970 for (i = 0; i < 2; i++)
971 status = mdio_read(net_dev, phy_addr, MII_STATUS);
973 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
978 #ifdef CONFIG_NET_POLL_CONTROLLER
980 * Polling 'interrupt' - used by things like netconsole to send skbs
981 * without having to re-enable interrupts. It's not called while
982 * the interrupt routine is executing.
984 static void sis900_poll(struct net_device *dev)
986 disable_irq(dev->irq);
987 sis900_interrupt(dev->irq, dev);
988 enable_irq(dev->irq);
993 * sis900_open - open sis900 device
994 * @net_dev: the net device to open
996 * Do some initialization and start net interface.
997 * enable interrupts and set sis900 timer.
1001 sis900_open(struct net_device *net_dev)
1003 struct sis900_private *sis_priv = net_dev->priv;
1004 long ioaddr = net_dev->base_addr;
1007 /* Soft reset the chip. */
1008 sis900_reset(net_dev);
1010 /* Equalizer workaround Rule */
1011 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1013 ret = request_irq(net_dev->irq, &sis900_interrupt, IRQF_SHARED,
1014 net_dev->name, net_dev);
1018 sis900_init_rxfilter(net_dev);
1020 sis900_init_tx_ring(net_dev);
1021 sis900_init_rx_ring(net_dev);
1023 set_rx_mode(net_dev);
1025 netif_start_queue(net_dev);
1027 /* Workaround for EDB */
1028 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1030 /* Enable all known interrupts by setting the interrupt mask. */
1031 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1032 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
1033 outl(IE, ioaddr + ier);
1035 sis900_check_mode(net_dev, sis_priv->mii);
1037 /* Set the timer to switch to check for link beat and perhaps switch
1038 to an alternate media type. */
1039 init_timer(&sis_priv->timer);
1040 sis_priv->timer.expires = jiffies + HZ;
1041 sis_priv->timer.data = (unsigned long)net_dev;
1042 sis_priv->timer.function = &sis900_timer;
1043 add_timer(&sis_priv->timer);
1049 * sis900_init_rxfilter - Initialize the Rx filter
1050 * @net_dev: the net device to initialize for
1052 * Set receive filter address to our MAC address
1053 * and enable packet filtering.
1057 sis900_init_rxfilter (struct net_device * net_dev)
1059 struct sis900_private *sis_priv = net_dev->priv;
1060 long ioaddr = net_dev->base_addr;
1064 rfcrSave = inl(rfcr + ioaddr);
1066 /* disable packet filtering before setting filter */
1067 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
1069 /* load MAC addr to filter data register */
1070 for (i = 0 ; i < 3 ; i++) {
1073 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1074 outl((i << RFADDR_shift), ioaddr + rfcr);
1075 outl(w, ioaddr + rfdr);
1077 if (netif_msg_hw(sis_priv)) {
1078 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1079 net_dev->name, i, inl(ioaddr + rfdr));
1083 /* enable packet filtering */
1084 outl(rfcrSave | RFEN, rfcr + ioaddr);
1088 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1089 * @net_dev: the net device to initialize for
1091 * Initialize the Tx descriptor ring,
1095 sis900_init_tx_ring(struct net_device *net_dev)
1097 struct sis900_private *sis_priv = net_dev->priv;
1098 long ioaddr = net_dev->base_addr;
1101 sis_priv->tx_full = 0;
1102 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1104 for (i = 0; i < NUM_TX_DESC; i++) {
1105 sis_priv->tx_skbuff[i] = NULL;
1107 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1108 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1109 sis_priv->tx_ring[i].cmdsts = 0;
1110 sis_priv->tx_ring[i].bufptr = 0;
1113 /* load Transmit Descriptor Register */
1114 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1115 if (netif_msg_hw(sis_priv))
1116 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1117 net_dev->name, inl(ioaddr + txdp));
1121 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1122 * @net_dev: the net device to initialize for
1124 * Initialize the Rx descriptor ring,
1125 * and pre-allocate recevie buffers (socket buffer)
1129 sis900_init_rx_ring(struct net_device *net_dev)
1131 struct sis900_private *sis_priv = net_dev->priv;
1132 long ioaddr = net_dev->base_addr;
1135 sis_priv->cur_rx = 0;
1136 sis_priv->dirty_rx = 0;
1138 /* init RX descriptor */
1139 for (i = 0; i < NUM_RX_DESC; i++) {
1140 sis_priv->rx_skbuff[i] = NULL;
1142 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1143 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1144 sis_priv->rx_ring[i].cmdsts = 0;
1145 sis_priv->rx_ring[i].bufptr = 0;
1148 /* allocate sock buffers */
1149 for (i = 0; i < NUM_RX_DESC; i++) {
1150 struct sk_buff *skb;
1152 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1153 /* not enough memory for skbuff, this makes a "hole"
1154 on the buffer ring, it is not clear how the
1155 hardware will react to this kind of degenerated
1159 sis_priv->rx_skbuff[i] = skb;
1160 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1161 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
1162 skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1164 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1166 /* load Receive Descriptor Register */
1167 outl(sis_priv->rx_ring_dma, ioaddr + rxdp);
1168 if (netif_msg_hw(sis_priv))
1169 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1170 net_dev->name, inl(ioaddr + rxdp));
1174 * sis630_set_eq - set phy equalizer value for 630 LAN
1175 * @net_dev: the net device to set equalizer value
1176 * @revision: 630 LAN revision number
1178 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1179 * PHY register 14h(Test)
1180 * Bit 14: 0 -- Automatically dectect (default)
1181 * 1 -- Manually set Equalizer filter
1182 * Bit 13: 0 -- (Default)
1183 * 1 -- Speed up convergence of equalizer setting
1184 * Bit 9 : 0 -- (Default)
1185 * 1 -- Disable Baseline Wander
1186 * Bit 3~7 -- Equalizer filter setting
1187 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1188 * Then calculate equalizer value
1189 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1190 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1191 * Calculate Equalizer value:
1192 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-dectect proper equalizer value.
1193 * When the equalizer is stable, this value is not a fixed value. It will be within
1194 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1195 * 0 <= max <= 4 --> set equalizer to max
1196 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1197 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1200 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1202 struct sis900_private *sis_priv = net_dev->priv;
1203 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1206 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1207 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1210 if (netif_carrier_ok(net_dev)) {
1211 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1212 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1213 (0x2200 | reg14h) & 0xBFFF);
1214 for (i=0; i < maxcount; i++) {
1215 eq_value = (0x00F8 & mdio_read(net_dev,
1216 sis_priv->cur_phy, MII_RESV)) >> 3;
1218 max_value=min_value=eq_value;
1219 max_value = (eq_value > max_value) ?
1220 eq_value : max_value;
1221 min_value = (eq_value < min_value) ?
1222 eq_value : min_value;
1224 /* 630E rule to determine the equalizer value */
1225 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1226 revision == SIS630ET_900_REV) {
1228 eq_value = max_value;
1229 else if (max_value >= 5 && max_value < 15)
1230 eq_value = (max_value == min_value) ?
1231 max_value+2 : max_value+1;
1232 else if (max_value >= 15)
1233 eq_value=(max_value == min_value) ?
1234 max_value+6 : max_value+5;
1236 /* 630B0&B1 rule to determine the equalizer value */
1237 if (revision == SIS630A_900_REV &&
1238 (sis_priv->host_bridge_rev == SIS630B0 ||
1239 sis_priv->host_bridge_rev == SIS630B1)) {
1243 eq_value = (max_value + min_value + 1)/2;
1245 /* write equalizer value and setting */
1246 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1247 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1248 reg14h = (reg14h | 0x6000) & 0xFDFF;
1249 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1251 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1252 if (revision == SIS630A_900_REV &&
1253 (sis_priv->host_bridge_rev == SIS630B0 ||
1254 sis_priv->host_bridge_rev == SIS630B1))
1255 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1256 (reg14h | 0x2200) & 0xBFFF);
1258 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1259 (reg14h | 0x2000) & 0xBFFF);
1265 * sis900_timer - sis900 timer routine
1266 * @data: pointer to sis900 net device
1268 * On each timer ticks we check two things,
1269 * link status (ON/OFF) and link mode (10/100/Full/Half)
1272 static void sis900_timer(unsigned long data)
1274 struct net_device *net_dev = (struct net_device *)data;
1275 struct sis900_private *sis_priv = net_dev->priv;
1276 struct mii_phy *mii_phy = sis_priv->mii;
1277 static const int next_tick = 5*HZ;
1280 if (!sis_priv->autong_complete){
1281 int speed, duplex = 0;
1283 sis900_read_mode(net_dev, &speed, &duplex);
1285 sis900_set_mode(net_dev->base_addr, speed, duplex);
1286 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1287 netif_start_queue(net_dev);
1290 sis_priv->timer.expires = jiffies + HZ;
1291 add_timer(&sis_priv->timer);
1295 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1296 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1298 /* Link OFF -> ON */
1299 if (!netif_carrier_ok(net_dev)) {
1301 /* Search for new PHY */
1302 status = sis900_default_phy(net_dev);
1303 mii_phy = sis_priv->mii;
1305 if (status & MII_STAT_LINK){
1306 sis900_check_mode(net_dev, mii_phy);
1307 netif_carrier_on(net_dev);
1310 /* Link ON -> OFF */
1311 if (!(status & MII_STAT_LINK)){
1312 netif_carrier_off(net_dev);
1313 if(netif_msg_link(sis_priv))
1314 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1316 /* Change mode issue */
1317 if ((mii_phy->phy_id0 == 0x001D) &&
1318 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1319 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1321 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1327 sis_priv->timer.expires = jiffies + next_tick;
1328 add_timer(&sis_priv->timer);
1332 * sis900_check_mode - check the media mode for sis900
1333 * @net_dev: the net device to be checked
1334 * @mii_phy: the mii phy
1336 * Older driver gets the media mode from mii status output
1337 * register. Now we set our media capability and auto-negotiate
1338 * to get the upper bound of speed and duplex between two ends.
1339 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1340 * and autong_complete should be set to 1.
1343 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1345 struct sis900_private *sis_priv = net_dev->priv;
1346 long ioaddr = net_dev->base_addr;
1349 if (mii_phy->phy_types == LAN) {
1350 outl(~EXD & inl(ioaddr + cfg), ioaddr + cfg);
1351 sis900_set_capability(net_dev , mii_phy);
1352 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1354 outl(EXD | inl(ioaddr + cfg), ioaddr + cfg);
1355 speed = HW_SPEED_HOME;
1356 duplex = FDX_CAPABLE_HALF_SELECTED;
1357 sis900_set_mode(ioaddr, speed, duplex);
1358 sis_priv->autong_complete = 1;
1363 * sis900_set_mode - Set the media mode of mac register.
1364 * @ioaddr: the address of the device
1365 * @speed : the transmit speed to be determined
1366 * @duplex: the duplex mode to be determined
1368 * Set the media mode of mac register txcfg/rxcfg according to
1369 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1370 * bus is used instead of PCI bus. When this bit is set 1, the
1371 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1375 static void sis900_set_mode (long ioaddr, int speed, int duplex)
1377 u32 tx_flags = 0, rx_flags = 0;
1379 if (inl(ioaddr + cfg) & EDB_MASTER_EN) {
1380 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1381 (TX_FILL_THRESH << TxFILLT_shift);
1382 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1384 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1385 (TX_FILL_THRESH << TxFILLT_shift);
1386 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1389 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1390 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1391 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1393 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1394 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1397 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1398 tx_flags |= (TxCSI | TxHBI);
1402 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1403 /* Can accept Jumbo packet */
1407 outl (tx_flags, ioaddr + txcfg);
1408 outl (rx_flags, ioaddr + rxcfg);
1412 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1413 * @net_dev: the net device to read mode for
1414 * @phy_addr: mii phy address
1416 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1417 * autong_complete should be set to 0 when starting auto-negotiation.
1418 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1419 * sis900_timer will wait for link on again if autong_complete = 0.
1422 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1424 struct sis900_private *sis_priv = net_dev->priv;
1428 for (i = 0; i < 2; i++)
1429 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1431 if (!(status & MII_STAT_LINK)){
1432 if(netif_msg_link(sis_priv))
1433 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1434 sis_priv->autong_complete = 1;
1435 netif_carrier_off(net_dev);
1439 /* (Re)start AutoNegotiate */
1440 mdio_write(net_dev, phy_addr, MII_CONTROL,
1441 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1442 sis_priv->autong_complete = 0;
1447 * sis900_read_mode - read media mode for sis900 internal phy
1448 * @net_dev: the net device to read mode for
1449 * @speed : the transmit speed to be determined
1450 * @duplex : the duplex mode to be determined
1452 * The capability of remote end will be put in mii register autorec
1453 * after auto-negotiation. Use AND operation to get the upper bound
1454 * of speed and duplex between two ends.
1457 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1459 struct sis900_private *sis_priv = net_dev->priv;
1460 struct mii_phy *phy = sis_priv->mii;
1461 int phy_addr = sis_priv->cur_phy;
1463 u16 autoadv, autorec;
1466 for (i = 0; i < 2; i++)
1467 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1469 if (!(status & MII_STAT_LINK))
1472 /* AutoNegotiate completed */
1473 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1474 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1475 status = autoadv & autorec;
1477 *speed = HW_SPEED_10_MBPS;
1478 *duplex = FDX_CAPABLE_HALF_SELECTED;
1480 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1481 *speed = HW_SPEED_100_MBPS;
1482 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1483 *duplex = FDX_CAPABLE_FULL_SELECTED;
1485 sis_priv->autong_complete = 1;
1487 /* Workaround for Realtek RTL8201 PHY issue */
1488 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1489 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1490 *duplex = FDX_CAPABLE_FULL_SELECTED;
1491 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1492 *speed = HW_SPEED_100_MBPS;
1495 if(netif_msg_link(sis_priv))
1496 printk(KERN_INFO "%s: Media Link On %s %s-duplex \n",
1498 *speed == HW_SPEED_100_MBPS ?
1499 "100mbps" : "10mbps",
1500 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1505 * sis900_tx_timeout - sis900 transmit timeout routine
1506 * @net_dev: the net device to transmit
1508 * print transmit timeout status
1509 * disable interrupts and do some tasks
1512 static void sis900_tx_timeout(struct net_device *net_dev)
1514 struct sis900_private *sis_priv = net_dev->priv;
1515 long ioaddr = net_dev->base_addr;
1516 unsigned long flags;
1519 if(netif_msg_tx_err(sis_priv))
1520 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x \n",
1521 net_dev->name, inl(ioaddr + cr), inl(ioaddr + isr));
1523 /* Disable interrupts by clearing the interrupt mask. */
1524 outl(0x0000, ioaddr + imr);
1526 /* use spinlock to prevent interrupt handler accessing buffer ring */
1527 spin_lock_irqsave(&sis_priv->lock, flags);
1529 /* discard unsent packets */
1530 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1531 for (i = 0; i < NUM_TX_DESC; i++) {
1532 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1535 pci_unmap_single(sis_priv->pci_dev,
1536 sis_priv->tx_ring[i].bufptr, skb->len,
1538 dev_kfree_skb_irq(skb);
1539 sis_priv->tx_skbuff[i] = NULL;
1540 sis_priv->tx_ring[i].cmdsts = 0;
1541 sis_priv->tx_ring[i].bufptr = 0;
1542 net_dev->stats.tx_dropped++;
1545 sis_priv->tx_full = 0;
1546 netif_wake_queue(net_dev);
1548 spin_unlock_irqrestore(&sis_priv->lock, flags);
1550 net_dev->trans_start = jiffies;
1552 /* load Transmit Descriptor Register */
1553 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1555 /* Enable all known interrupts by setting the interrupt mask. */
1556 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1561 * sis900_start_xmit - sis900 start transmit routine
1562 * @skb: socket buffer pointer to put the data being transmitted
1563 * @net_dev: the net device to transmit with
1565 * Set the transmit buffer descriptor,
1566 * and write TxENA to enable transmit state machine.
1567 * tell upper layer if the buffer is full
1571 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1573 struct sis900_private *sis_priv = net_dev->priv;
1574 long ioaddr = net_dev->base_addr;
1576 unsigned long flags;
1577 unsigned int index_cur_tx, index_dirty_tx;
1578 unsigned int count_dirty_tx;
1580 /* Don't transmit data before the complete of auto-negotiation */
1581 if(!sis_priv->autong_complete){
1582 netif_stop_queue(net_dev);
1586 spin_lock_irqsave(&sis_priv->lock, flags);
1588 /* Calculate the next Tx descriptor entry. */
1589 entry = sis_priv->cur_tx % NUM_TX_DESC;
1590 sis_priv->tx_skbuff[entry] = skb;
1592 /* set the transmit buffer descriptor and enable Transmit State Machine */
1593 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1594 skb->data, skb->len, PCI_DMA_TODEVICE);
1595 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1596 outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
1598 sis_priv->cur_tx ++;
1599 index_cur_tx = sis_priv->cur_tx;
1600 index_dirty_tx = sis_priv->dirty_tx;
1602 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1605 if (index_cur_tx == index_dirty_tx) {
1606 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1607 sis_priv->tx_full = 1;
1608 netif_stop_queue(net_dev);
1609 } else if (count_dirty_tx < NUM_TX_DESC) {
1610 /* Typical path, tell upper layer that more transmission is possible */
1611 netif_start_queue(net_dev);
1613 /* buffer full, tell upper layer no more transmission */
1614 sis_priv->tx_full = 1;
1615 netif_stop_queue(net_dev);
1618 spin_unlock_irqrestore(&sis_priv->lock, flags);
1620 net_dev->trans_start = jiffies;
1622 if (netif_msg_tx_queued(sis_priv))
1623 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1625 net_dev->name, skb->data, (int)skb->len, entry);
1631 * sis900_interrupt - sis900 interrupt handler
1632 * @irq: the irq number
1633 * @dev_instance: the client data object
1634 * @regs: snapshot of processor context
1636 * The interrupt handler does all of the Rx thread work,
1637 * and cleans up after the Tx thread
1640 static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
1642 struct net_device *net_dev = dev_instance;
1643 struct sis900_private *sis_priv = net_dev->priv;
1644 int boguscnt = max_interrupt_work;
1645 long ioaddr = net_dev->base_addr;
1647 unsigned int handled = 0;
1649 spin_lock (&sis_priv->lock);
1652 status = inl(ioaddr + isr);
1654 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1655 /* nothing intresting happened */
1659 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1660 if (status & (RxORN | RxERR | RxOK))
1664 if (status & (TxURN | TxERR | TxIDLE))
1666 sis900_finish_xmit(net_dev);
1668 /* something strange happened !!! */
1669 if (status & HIBERR) {
1670 if(netif_msg_intr(sis_priv))
1671 printk(KERN_INFO "%s: Abnormal interrupt,"
1672 "status %#8.8x.\n", net_dev->name, status);
1675 if (--boguscnt < 0) {
1676 if(netif_msg_intr(sis_priv))
1677 printk(KERN_INFO "%s: Too much work at interrupt, "
1678 "interrupt status = %#8.8x.\n",
1679 net_dev->name, status);
1684 if(netif_msg_intr(sis_priv))
1685 printk(KERN_DEBUG "%s: exiting interrupt, "
1686 "interrupt status = 0x%#8.8x.\n",
1687 net_dev->name, inl(ioaddr + isr));
1689 spin_unlock (&sis_priv->lock);
1690 return IRQ_RETVAL(handled);
1694 * sis900_rx - sis900 receive routine
1695 * @net_dev: the net device which receives data
1697 * Process receive interrupt events,
1698 * put buffer to higher layer and refill buffer pool
1699 * Note: This function is called by interrupt handler,
1700 * don't do "too much" work here
1703 static int sis900_rx(struct net_device *net_dev)
1705 struct sis900_private *sis_priv = net_dev->priv;
1706 long ioaddr = net_dev->base_addr;
1707 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1708 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1711 if (netif_msg_rx_status(sis_priv))
1712 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1714 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1715 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
1717 while (rx_status & OWN) {
1718 unsigned int rx_size;
1719 unsigned int data_size;
1721 if (--rx_work_limit < 0)
1724 data_size = rx_status & DSIZE;
1725 rx_size = data_size - CRC_SIZE;
1727 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1728 /* ``TOOLONG'' flag means jumbo packet recived. */
1729 if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
1730 rx_status &= (~ ((unsigned int)TOOLONG));
1733 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1734 /* corrupted packet received */
1735 if (netif_msg_rx_err(sis_priv))
1736 printk(KERN_DEBUG "%s: Corrupted packet "
1737 "received, buffer status = 0x%8.8x/%d.\n",
1738 net_dev->name, rx_status, data_size);
1739 net_dev->stats.rx_errors++;
1740 if (rx_status & OVERRUN)
1741 net_dev->stats.rx_over_errors++;
1742 if (rx_status & (TOOLONG|RUNT))
1743 net_dev->stats.rx_length_errors++;
1744 if (rx_status & (RXISERR | FAERR))
1745 net_dev->stats.rx_frame_errors++;
1746 if (rx_status & CRCERR)
1747 net_dev->stats.rx_crc_errors++;
1748 /* reset buffer descriptor state */
1749 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1751 struct sk_buff * skb;
1752 struct sk_buff * rx_skb;
1754 pci_unmap_single(sis_priv->pci_dev,
1755 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1756 PCI_DMA_FROMDEVICE);
1758 /* refill the Rx buffer, what if there is not enought
1759 * memory for new socket buffer ?? */
1760 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1762 * Not enough memory to refill the buffer
1763 * so we need to recycle the old one so
1764 * as to avoid creating a memory hole
1767 skb = sis_priv->rx_skbuff[entry];
1768 net_dev->stats.rx_dropped++;
1769 goto refill_rx_ring;
1772 /* This situation should never happen, but due to
1773 some unknow bugs, it is possible that
1774 we are working on NULL sk_buff :-( */
1775 if (sis_priv->rx_skbuff[entry] == NULL) {
1776 if (netif_msg_rx_err(sis_priv))
1777 printk(KERN_WARNING "%s: NULL pointer "
1778 "encountered in Rx ring\n"
1779 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1780 net_dev->name, sis_priv->cur_rx,
1781 sis_priv->dirty_rx);
1785 /* give the socket buffer to upper layers */
1786 rx_skb = sis_priv->rx_skbuff[entry];
1787 skb_put(rx_skb, rx_size);
1788 rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
1791 /* some network statistics */
1792 if ((rx_status & BCAST) == MCAST)
1793 net_dev->stats.multicast++;
1794 net_dev->last_rx = jiffies;
1795 net_dev->stats.rx_bytes += rx_size;
1796 net_dev->stats.rx_packets++;
1797 sis_priv->dirty_rx++;
1799 sis_priv->rx_skbuff[entry] = skb;
1800 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1801 sis_priv->rx_ring[entry].bufptr =
1802 pci_map_single(sis_priv->pci_dev, skb->data,
1803 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1806 entry = sis_priv->cur_rx % NUM_RX_DESC;
1807 rx_status = sis_priv->rx_ring[entry].cmdsts;
1810 /* refill the Rx buffer, what if the rate of refilling is slower
1811 * than consuming ?? */
1812 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
1813 struct sk_buff *skb;
1815 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1817 if (sis_priv->rx_skbuff[entry] == NULL) {
1818 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1819 /* not enough memory for skbuff, this makes a
1820 * "hole" on the buffer ring, it is not clear
1821 * how the hardware will react to this kind
1822 * of degenerated buffer */
1823 if (netif_msg_rx_err(sis_priv))
1824 printk(KERN_INFO "%s: Memory squeeze,"
1825 "deferring packet.\n",
1827 net_dev->stats.rx_dropped++;
1830 sis_priv->rx_skbuff[entry] = skb;
1831 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1832 sis_priv->rx_ring[entry].bufptr =
1833 pci_map_single(sis_priv->pci_dev, skb->data,
1834 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1837 /* re-enable the potentially idle receive state matchine */
1838 outl(RxENA | inl(ioaddr + cr), ioaddr + cr );
1844 * sis900_finish_xmit - finish up transmission of packets
1845 * @net_dev: the net device to be transmitted on
1847 * Check for error condition and free socket buffer etc
1848 * schedule for more transmission as needed
1849 * Note: This function is called by interrupt handler,
1850 * don't do "too much" work here
1853 static void sis900_finish_xmit (struct net_device *net_dev)
1855 struct sis900_private *sis_priv = net_dev->priv;
1857 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1858 struct sk_buff *skb;
1862 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1863 tx_status = sis_priv->tx_ring[entry].cmdsts;
1865 if (tx_status & OWN) {
1866 /* The packet is not transmitted yet (owned by hardware) !
1867 * Note: the interrupt is generated only when Tx Machine
1868 * is idle, so this is an almost impossible case */
1872 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1873 /* packet unsuccessfully transmitted */
1874 if (netif_msg_tx_err(sis_priv))
1875 printk(KERN_DEBUG "%s: Transmit "
1876 "error, Tx status %8.8x.\n",
1877 net_dev->name, tx_status);
1878 net_dev->stats.tx_errors++;
1879 if (tx_status & UNDERRUN)
1880 net_dev->stats.tx_fifo_errors++;
1881 if (tx_status & ABORT)
1882 net_dev->stats.tx_aborted_errors++;
1883 if (tx_status & NOCARRIER)
1884 net_dev->stats.tx_carrier_errors++;
1885 if (tx_status & OWCOLL)
1886 net_dev->stats.tx_window_errors++;
1888 /* packet successfully transmitted */
1889 net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
1890 net_dev->stats.tx_bytes += tx_status & DSIZE;
1891 net_dev->stats.tx_packets++;
1893 /* Free the original skb. */
1894 skb = sis_priv->tx_skbuff[entry];
1895 pci_unmap_single(sis_priv->pci_dev,
1896 sis_priv->tx_ring[entry].bufptr, skb->len,
1898 dev_kfree_skb_irq(skb);
1899 sis_priv->tx_skbuff[entry] = NULL;
1900 sis_priv->tx_ring[entry].bufptr = 0;
1901 sis_priv->tx_ring[entry].cmdsts = 0;
1904 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1905 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1906 /* The ring is no longer full, clear tx_full and schedule
1907 * more transmission by netif_wake_queue(net_dev) */
1908 sis_priv->tx_full = 0;
1909 netif_wake_queue (net_dev);
1914 * sis900_close - close sis900 device
1915 * @net_dev: the net device to be closed
1917 * Disable interrupts, stop the Tx and Rx Status Machine
1918 * free Tx and RX socket buffer
1921 static int sis900_close(struct net_device *net_dev)
1923 long ioaddr = net_dev->base_addr;
1924 struct sis900_private *sis_priv = net_dev->priv;
1925 struct sk_buff *skb;
1928 netif_stop_queue(net_dev);
1930 /* Disable interrupts by clearing the interrupt mask. */
1931 outl(0x0000, ioaddr + imr);
1932 outl(0x0000, ioaddr + ier);
1934 /* Stop the chip's Tx and Rx Status Machine */
1935 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
1937 del_timer(&sis_priv->timer);
1939 free_irq(net_dev->irq, net_dev);
1941 /* Free Tx and RX skbuff */
1942 for (i = 0; i < NUM_RX_DESC; i++) {
1943 skb = sis_priv->rx_skbuff[i];
1945 pci_unmap_single(sis_priv->pci_dev,
1946 sis_priv->rx_ring[i].bufptr,
1947 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1949 sis_priv->rx_skbuff[i] = NULL;
1952 for (i = 0; i < NUM_TX_DESC; i++) {
1953 skb = sis_priv->tx_skbuff[i];
1955 pci_unmap_single(sis_priv->pci_dev,
1956 sis_priv->tx_ring[i].bufptr, skb->len,
1959 sis_priv->tx_skbuff[i] = NULL;
1963 /* Green! Put the chip in low-power mode. */
1969 * sis900_get_drvinfo - Return information about driver
1970 * @net_dev: the net device to probe
1971 * @info: container for info returned
1973 * Process ethtool command such as "ehtool -i" to show information
1976 static void sis900_get_drvinfo(struct net_device *net_dev,
1977 struct ethtool_drvinfo *info)
1979 struct sis900_private *sis_priv = net_dev->priv;
1981 strcpy (info->driver, SIS900_MODULE_NAME);
1982 strcpy (info->version, SIS900_DRV_VERSION);
1983 strcpy (info->bus_info, pci_name(sis_priv->pci_dev));
1986 static u32 sis900_get_msglevel(struct net_device *net_dev)
1988 struct sis900_private *sis_priv = net_dev->priv;
1989 return sis_priv->msg_enable;
1992 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
1994 struct sis900_private *sis_priv = net_dev->priv;
1995 sis_priv->msg_enable = value;
1998 static u32 sis900_get_link(struct net_device *net_dev)
2000 struct sis900_private *sis_priv = net_dev->priv;
2001 return mii_link_ok(&sis_priv->mii_info);
2004 static int sis900_get_settings(struct net_device *net_dev,
2005 struct ethtool_cmd *cmd)
2007 struct sis900_private *sis_priv = net_dev->priv;
2008 spin_lock_irq(&sis_priv->lock);
2009 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2010 spin_unlock_irq(&sis_priv->lock);
2014 static int sis900_set_settings(struct net_device *net_dev,
2015 struct ethtool_cmd *cmd)
2017 struct sis900_private *sis_priv = net_dev->priv;
2019 spin_lock_irq(&sis_priv->lock);
2020 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2021 spin_unlock_irq(&sis_priv->lock);
2025 static int sis900_nway_reset(struct net_device *net_dev)
2027 struct sis900_private *sis_priv = net_dev->priv;
2028 return mii_nway_restart(&sis_priv->mii_info);
2032 * sis900_set_wol - Set up Wake on Lan registers
2033 * @net_dev: the net device to probe
2034 * @wol: container for info passed to the driver
2036 * Process ethtool command "wol" to setup wake on lan features.
2037 * SiS900 supports sending WoL events if a correct packet is received,
2038 * but there is no simple way to filter them to only a subset (broadcast,
2039 * multicast, unicast or arp).
2042 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2044 struct sis900_private *sis_priv = net_dev->priv;
2045 long pmctrl_addr = net_dev->base_addr + pmctrl;
2046 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2048 if (wol->wolopts == 0) {
2049 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2050 cfgpmcsr &= ~PME_EN;
2051 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2052 outl(pmctrl_bits, pmctrl_addr);
2053 if (netif_msg_wol(sis_priv))
2054 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2058 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2059 | WAKE_BCAST | WAKE_ARP))
2062 if (wol->wolopts & WAKE_MAGIC)
2063 pmctrl_bits |= MAGICPKT;
2064 if (wol->wolopts & WAKE_PHY)
2065 pmctrl_bits |= LINKON;
2067 outl(pmctrl_bits, pmctrl_addr);
2069 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2071 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2072 if (netif_msg_wol(sis_priv))
2073 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2078 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2080 long pmctrl_addr = net_dev->base_addr + pmctrl;
2083 pmctrl_bits = inl(pmctrl_addr);
2084 if (pmctrl_bits & MAGICPKT)
2085 wol->wolopts |= WAKE_MAGIC;
2086 if (pmctrl_bits & LINKON)
2087 wol->wolopts |= WAKE_PHY;
2089 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2092 static const struct ethtool_ops sis900_ethtool_ops = {
2093 .get_drvinfo = sis900_get_drvinfo,
2094 .get_msglevel = sis900_get_msglevel,
2095 .set_msglevel = sis900_set_msglevel,
2096 .get_link = sis900_get_link,
2097 .get_settings = sis900_get_settings,
2098 .set_settings = sis900_set_settings,
2099 .nway_reset = sis900_nway_reset,
2100 .get_wol = sis900_get_wol,
2101 .set_wol = sis900_set_wol
2105 * mii_ioctl - process MII i/o control command
2106 * @net_dev: the net device to command for
2107 * @rq: parameter for command
2108 * @cmd: the i/o command
2110 * Process MII command like read/write MII register
2113 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2115 struct sis900_private *sis_priv = net_dev->priv;
2116 struct mii_ioctl_data *data = if_mii(rq);
2119 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2120 data->phy_id = sis_priv->mii->phy_addr;
2123 case SIOCGMIIREG: /* Read MII PHY register. */
2124 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2127 case SIOCSMIIREG: /* Write MII PHY register. */
2128 if (!capable(CAP_NET_ADMIN))
2130 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2138 * sis900_set_config - Set media type by net_device.set_config
2139 * @dev: the net device for media type change
2140 * @map: ifmap passed by ifconfig
2142 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2143 * we support only port changes. All other runtime configuration
2144 * changes will be ignored
2147 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2149 struct sis900_private *sis_priv = dev->priv;
2150 struct mii_phy *mii_phy = sis_priv->mii;
2154 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2155 /* we switch on the ifmap->port field. I couldn't find anything
2156 * like a definition or standard for the values of that field.
2157 * I think the meaning of those values is device specific. But
2158 * since I would like to change the media type via the ifconfig
2159 * command I use the definition from linux/netdevice.h
2160 * (which seems to be different from the ifport(pcmcia) definition) */
2162 case IF_PORT_UNKNOWN: /* use auto here */
2163 dev->if_port = map->port;
2164 /* we are going to change the media type, so the Link
2165 * will be temporary down and we need to reflect that
2166 * here. When the Link comes up again, it will be
2167 * sensed by the sis_timer procedure, which also does
2168 * all the rest for us */
2169 netif_carrier_off(dev);
2171 /* read current state */
2172 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2174 /* enable auto negotiation and reset the negotioation
2175 * (I don't really know what the auto negatiotiation
2176 * reset really means, but it sounds for me right to
2178 mdio_write(dev, mii_phy->phy_addr,
2179 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2183 case IF_PORT_10BASET: /* 10BaseT */
2184 dev->if_port = map->port;
2186 /* we are going to change the media type, so the Link
2187 * will be temporary down and we need to reflect that
2188 * here. When the Link comes up again, it will be
2189 * sensed by the sis_timer procedure, which also does
2190 * all the rest for us */
2191 netif_carrier_off(dev);
2193 /* set Speed to 10Mbps */
2194 /* read current state */
2195 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2197 /* disable auto negotiation and force 10MBit mode*/
2198 mdio_write(dev, mii_phy->phy_addr,
2199 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2203 case IF_PORT_100BASET: /* 100BaseT */
2204 case IF_PORT_100BASETX: /* 100BaseTx */
2205 dev->if_port = map->port;
2207 /* we are going to change the media type, so the Link
2208 * will be temporary down and we need to reflect that
2209 * here. When the Link comes up again, it will be
2210 * sensed by the sis_timer procedure, which also does
2211 * all the rest for us */
2212 netif_carrier_off(dev);
2214 /* set Speed to 100Mbps */
2215 /* disable auto negotiation and enable 100MBit Mode */
2216 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2217 mdio_write(dev, mii_phy->phy_addr,
2218 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2223 case IF_PORT_10BASE2: /* 10Base2 */
2224 case IF_PORT_AUI: /* AUI */
2225 case IF_PORT_100BASEFX: /* 100BaseFx */
2226 /* These Modes are not supported (are they?)*/
2238 * sis900_mcast_bitnr - compute hashtable index
2239 * @addr: multicast address
2240 * @revision: revision id of chip
2242 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2243 * hash table, which makes this function a little bit different from other drivers
2244 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2245 * multicast hash table.
2248 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2251 u32 crc = ether_crc(6, addr);
2253 /* leave 8 or 7 most siginifant bits */
2254 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2255 return ((int)(crc >> 24));
2257 return ((int)(crc >> 25));
2261 * set_rx_mode - Set SiS900 receive mode
2262 * @net_dev: the net device to be set
2264 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2265 * And set the appropriate multicast filter.
2266 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2269 static void set_rx_mode(struct net_device *net_dev)
2271 long ioaddr = net_dev->base_addr;
2272 struct sis900_private * sis_priv = net_dev->priv;
2273 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2274 int i, table_entries;
2277 /* 635 Hash Table entries = 256(2^16) */
2278 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2279 (sis_priv->chipset_rev == SIS900B_900_REV))
2284 if (net_dev->flags & IFF_PROMISC) {
2285 /* Accept any kinds of packets */
2286 rx_mode = RFPromiscuous;
2287 for (i = 0; i < table_entries; i++)
2288 mc_filter[i] = 0xffff;
2289 } else if ((net_dev->mc_count > multicast_filter_limit) ||
2290 (net_dev->flags & IFF_ALLMULTI)) {
2291 /* too many multicast addresses or accept all multicast packet */
2292 rx_mode = RFAAB | RFAAM;
2293 for (i = 0; i < table_entries; i++)
2294 mc_filter[i] = 0xffff;
2296 /* Accept Broadcast packet, destination address matchs our
2297 * MAC address, use Receive Filter to reject unwanted MCAST
2299 struct dev_mc_list *mclist;
2301 for (i = 0, mclist = net_dev->mc_list;
2302 mclist && i < net_dev->mc_count;
2303 i++, mclist = mclist->next) {
2304 unsigned int bit_nr =
2305 sis900_mcast_bitnr(mclist->dmi_addr, sis_priv->chipset_rev);
2306 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2310 /* update Multicast Hash Table in Receive Filter */
2311 for (i = 0; i < table_entries; i++) {
2312 /* why plus 0x04 ??, That makes the correct value for hash table. */
2313 outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr);
2314 outl(mc_filter[i], ioaddr + rfdr);
2317 outl(RFEN | rx_mode, ioaddr + rfcr);
2319 /* sis900 is capable of looping back packets at MAC level for
2320 * debugging purpose */
2321 if (net_dev->flags & IFF_LOOPBACK) {
2323 /* We must disable Tx/Rx before setting loopback mode */
2324 cr_saved = inl(ioaddr + cr);
2325 outl(cr_saved | TxDIS | RxDIS, ioaddr + cr);
2326 /* enable loopback */
2327 outl(inl(ioaddr + txcfg) | TxMLB, ioaddr + txcfg);
2328 outl(inl(ioaddr + rxcfg) | RxATX, ioaddr + rxcfg);
2330 outl(cr_saved, ioaddr + cr);
2337 * sis900_reset - Reset sis900 MAC
2338 * @net_dev: the net device to reset
2340 * reset sis900 MAC and wait until finished
2341 * reset through command register
2342 * change backoff algorithm for 900B0 & 635 M/B
2345 static void sis900_reset(struct net_device *net_dev)
2347 struct sis900_private * sis_priv = net_dev->priv;
2348 long ioaddr = net_dev->base_addr;
2350 u32 status = TxRCMP | RxRCMP;
2352 outl(0, ioaddr + ier);
2353 outl(0, ioaddr + imr);
2354 outl(0, ioaddr + rfcr);
2356 outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr);
2358 /* Check that the chip has finished the reset. */
2359 while (status && (i++ < 1000)) {
2360 status ^= (inl(isr + ioaddr) & status);
2363 if( (sis_priv->chipset_rev >= SIS635A_900_REV) ||
2364 (sis_priv->chipset_rev == SIS900B_900_REV) )
2365 outl(PESEL | RND_CNT, ioaddr + cfg);
2367 outl(PESEL, ioaddr + cfg);
2371 * sis900_remove - Remove sis900 device
2372 * @pci_dev: the pci device to be removed
2374 * remove and release SiS900 net device
2377 static void __devexit sis900_remove(struct pci_dev *pci_dev)
2379 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2380 struct sis900_private * sis_priv = net_dev->priv;
2381 struct mii_phy *phy = NULL;
2383 while (sis_priv->first_mii) {
2384 phy = sis_priv->first_mii;
2385 sis_priv->first_mii = phy->next;
2389 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2390 sis_priv->rx_ring_dma);
2391 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2392 sis_priv->tx_ring_dma);
2393 unregister_netdev(net_dev);
2394 free_netdev(net_dev);
2395 pci_release_regions(pci_dev);
2396 pci_set_drvdata(pci_dev, NULL);
2401 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2403 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2404 long ioaddr = net_dev->base_addr;
2406 if(!netif_running(net_dev))
2409 netif_stop_queue(net_dev);
2410 netif_device_detach(net_dev);
2412 /* Stop the chip's Tx and Rx Status Machine */
2413 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
2415 pci_set_power_state(pci_dev, PCI_D3hot);
2416 pci_save_state(pci_dev);
2421 static int sis900_resume(struct pci_dev *pci_dev)
2423 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2424 struct sis900_private *sis_priv = net_dev->priv;
2425 long ioaddr = net_dev->base_addr;
2427 if(!netif_running(net_dev))
2429 pci_restore_state(pci_dev);
2430 pci_set_power_state(pci_dev, PCI_D0);
2432 sis900_init_rxfilter(net_dev);
2434 sis900_init_tx_ring(net_dev);
2435 sis900_init_rx_ring(net_dev);
2437 set_rx_mode(net_dev);
2439 netif_device_attach(net_dev);
2440 netif_start_queue(net_dev);
2442 /* Workaround for EDB */
2443 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2445 /* Enable all known interrupts by setting the interrupt mask. */
2446 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
2447 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
2448 outl(IE, ioaddr + ier);
2450 sis900_check_mode(net_dev, sis_priv->mii);
2454 #endif /* CONFIG_PM */
2456 static struct pci_driver sis900_pci_driver = {
2457 .name = SIS900_MODULE_NAME,
2458 .id_table = sis900_pci_tbl,
2459 .probe = sis900_probe,
2460 .remove = __devexit_p(sis900_remove),
2462 .suspend = sis900_suspend,
2463 .resume = sis900_resume,
2464 #endif /* CONFIG_PM */
2467 static int __init sis900_init_module(void)
2469 /* when a module, this is printed whether or not devices are found in probe */
2474 return pci_register_driver(&sis900_pci_driver);
2477 static void __exit sis900_cleanup_module(void)
2479 pci_unregister_driver(&sis900_pci_driver);
2482 module_init(sis900_init_module);
2483 module_exit(sis900_cleanup_module);