1 /* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
2 Copyright 1999 Silicon Integrated System Corporation
3 Revision: 1.08.08 Jan. 22 2005
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 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages
21 Rev 1.08.07 Nov. 2 2003 Daniele Venzano <webvenza@libero.it> add suspend/resume support
22 Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support
23 Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary
24 Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support
25 Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function
26 Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem
27 Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY
28 Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix
29 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
30 Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support
31 Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup
32 Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support
33 Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix
34 Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning
35 Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig
36 Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support
37 Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E eqaulizer workaround rule
38 Rev 1.07.01 Aug. 08 2000 Ollie Lho minor update for SiS 630E and SiS 630E A1
39 Rev 1.07 Mar. 07 2000 Ollie Lho bug fix in Rx buffer ring
40 Rev 1.06.04 Feb. 11 2000 Jeff Garzik <jgarzik@pobox.com> softnet and init for kernel 2.4
41 Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release
42 Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed
43 Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com)
44 Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release
45 Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx
46 Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support
47 Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release
50 #include <linux/module.h>
51 #include <linux/moduleparam.h>
52 #include <linux/kernel.h>
53 #include <linux/string.h>
54 #include <linux/timer.h>
55 #include <linux/errno.h>
56 #include <linux/ioport.h>
57 #include <linux/slab.h>
58 #include <linux/interrupt.h>
59 #include <linux/pci.h>
60 #include <linux/netdevice.h>
61 #include <linux/init.h>
62 #include <linux/mii.h>
63 #include <linux/etherdevice.h>
64 #include <linux/skbuff.h>
65 #include <linux/delay.h>
66 #include <linux/ethtool.h>
67 #include <linux/crc32.h>
68 #include <linux/bitops.h>
70 #include <asm/processor.h> /* Processor type for cache alignment. */
73 #include <asm/uaccess.h> /* User space memory access functions */
77 #define SIS900_MODULE_NAME "sis900"
78 #define SIS900_DRV_VERSION "v1.08.08 Jan. 22 2005"
80 static char version[] __devinitdata =
81 KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
83 static int max_interrupt_work = 40;
84 static int multicast_filter_limit = 128;
86 static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
88 #define SIS900_DEF_MSG \
94 /* Time in jiffies before concluding the transmitter is hung. */
95 #define TX_TIMEOUT (4*HZ)
96 /* SiS 900 is capable of 32 bits BM DMA */
97 #define SIS900_DMA_MASK 0xffffffff
103 static char * card_names[] = {
104 "SiS 900 PCI Fast Ethernet",
105 "SiS 7016 PCI Fast Ethernet"
107 static struct pci_device_id sis900_pci_tbl [] = {
108 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900,
109 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900},
110 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016,
111 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016},
114 MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
116 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
118 static struct mii_chip_info {
127 } mii_chip_table[] = {
128 { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
129 { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
130 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
131 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
132 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
133 { "ICS LAN PHY", 0x0015, 0xF440, LAN },
134 { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
135 { "NS 83847 PHY", 0x2000, 0x5C30, MIX },
136 { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
137 { "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
142 struct mii_phy * next;
150 typedef struct _BufferDesc {
156 struct sis900_private {
157 struct net_device_stats stats;
158 struct pci_dev * pci_dev;
162 struct mii_phy * mii;
163 struct mii_phy * first_mii; /* record the first mii structure */
164 unsigned int cur_phy;
165 struct mii_if_info mii_info;
167 struct timer_list timer; /* Link status detection timer. */
168 u8 autong_complete; /* 1: auto-negotiate complete */
172 unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
173 unsigned int cur_tx, dirty_tx;
175 /* The saved address of a sent/receive-in-place packet buffer */
176 struct sk_buff *tx_skbuff[NUM_TX_DESC];
177 struct sk_buff *rx_skbuff[NUM_RX_DESC];
181 dma_addr_t tx_ring_dma;
182 dma_addr_t rx_ring_dma;
184 unsigned int tx_full; /* The Tx queue is full. */
189 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
190 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
191 MODULE_LICENSE("GPL");
193 module_param(multicast_filter_limit, int, 0444);
194 module_param(max_interrupt_work, int, 0444);
195 module_param(sis900_debug, int, 0444);
196 MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
197 MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
198 MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
200 #ifdef CONFIG_NET_POLL_CONTROLLER
201 static void sis900_poll(struct net_device *dev);
203 static int sis900_open(struct net_device *net_dev);
204 static int sis900_mii_probe (struct net_device * net_dev);
205 static void sis900_init_rxfilter (struct net_device * net_dev);
206 static u16 read_eeprom(long ioaddr, int location);
207 static int mdio_read(struct net_device *net_dev, int phy_id, int location);
208 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
209 static void sis900_timer(unsigned long data);
210 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
211 static void sis900_tx_timeout(struct net_device *net_dev);
212 static void sis900_init_tx_ring(struct net_device *net_dev);
213 static void sis900_init_rx_ring(struct net_device *net_dev);
214 static int sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
215 static int sis900_rx(struct net_device *net_dev);
216 static void sis900_finish_xmit (struct net_device *net_dev);
217 static irqreturn_t sis900_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
218 static int sis900_close(struct net_device *net_dev);
219 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
220 static struct net_device_stats *sis900_get_stats(struct net_device *net_dev);
221 static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
222 static void set_rx_mode(struct net_device *net_dev);
223 static void sis900_reset(struct net_device *net_dev);
224 static void sis630_set_eq(struct net_device *net_dev, u8 revision);
225 static int sis900_set_config(struct net_device *dev, struct ifmap *map);
226 static u16 sis900_default_phy(struct net_device * net_dev);
227 static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
228 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
229 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
230 static void sis900_set_mode (long ioaddr, int speed, int duplex);
231 static struct ethtool_ops sis900_ethtool_ops;
234 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
235 * @pci_dev: the sis900 pci device
236 * @net_dev: the net device to get address for
238 * Older SiS900 and friends, use EEPROM to store MAC address.
239 * MAC address is read from read_eeprom() into @net_dev->dev_addr.
242 static int __devinit sis900_get_mac_addr(struct pci_dev * pci_dev, struct net_device *net_dev)
244 long ioaddr = pci_resource_start(pci_dev, 0);
248 /* check to see if we have sane EEPROM */
249 signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
250 if (signature == 0xffff || signature == 0x0000) {
251 printk (KERN_WARNING "%s: Error EERPOM read %x\n",
252 pci_name(pci_dev), signature);
256 /* get MAC address from EEPROM */
257 for (i = 0; i < 3; i++)
258 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
264 * sis630e_get_mac_addr - Get MAC address for SiS630E model
265 * @pci_dev: the sis900 pci device
266 * @net_dev: the net device to get address for
268 * SiS630E model, use APC CMOS RAM to store MAC address.
269 * APC CMOS RAM is accessed through ISA bridge.
270 * MAC address is read into @net_dev->dev_addr.
273 static int __devinit sis630e_get_mac_addr(struct pci_dev * pci_dev,
274 struct net_device *net_dev)
276 struct pci_dev *isa_bridge = NULL;
280 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
282 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
284 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
288 pci_read_config_byte(isa_bridge, 0x48, ®);
289 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
291 for (i = 0; i < 6; i++) {
292 outb(0x09 + i, 0x70);
293 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
295 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
296 pci_dev_put(isa_bridge);
303 * sis635_get_mac_addr - Get MAC address for SIS635 model
304 * @pci_dev: the sis900 pci device
305 * @net_dev: the net device to get address for
307 * SiS635 model, set MAC Reload Bit to load Mac address from APC
308 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
309 * @net_dev->dev_addr.
312 static int __devinit sis635_get_mac_addr(struct pci_dev * pci_dev,
313 struct net_device *net_dev)
315 long ioaddr = net_dev->base_addr;
319 rfcrSave = inl(rfcr + ioaddr);
321 outl(rfcrSave | RELOAD, ioaddr + cr);
322 outl(0, ioaddr + cr);
324 /* disable packet filtering before setting filter */
325 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
327 /* load MAC addr to filter data register */
328 for (i = 0 ; i < 3 ; i++) {
329 outl((i << RFADDR_shift), ioaddr + rfcr);
330 *( ((u16 *)net_dev->dev_addr) + i) = inw(ioaddr + rfdr);
333 /* enable packet filtering */
334 outl(rfcrSave | RFEN, rfcr + ioaddr);
340 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
341 * @pci_dev: the sis900 pci device
342 * @net_dev: the net device to get address for
344 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
346 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
347 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
348 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
349 * EEDONE signal to refuse EEPROM access by LAN.
350 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
351 * The signature field in SiS962 or SiS963 spec is meaningless.
352 * MAC address is read into @net_dev->dev_addr.
355 static int __devinit sis96x_get_mac_addr(struct pci_dev * pci_dev,
356 struct net_device *net_dev)
358 long ioaddr = net_dev->base_addr;
359 long ee_addr = ioaddr + mear;
363 outl(EEREQ, ee_addr);
364 while(waittime < 2000) {
365 if(inl(ee_addr) & EEGNT) {
367 /* get MAC address from EEPROM */
368 for (i = 0; i < 3; i++)
369 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
371 outl(EEDONE, ee_addr);
378 outl(EEDONE, ee_addr);
383 * sis900_probe - Probe for sis900 device
384 * @pci_dev: the sis900 pci device
385 * @pci_id: the pci device ID
387 * Check and probe sis900 net device for @pci_dev.
388 * Get mac address according to the chip revision,
389 * and assign SiS900-specific entries in the device structure.
390 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
393 static int __devinit sis900_probe(struct pci_dev *pci_dev,
394 const struct pci_device_id *pci_id)
396 struct sis900_private *sis_priv;
397 struct net_device *net_dev;
403 char *card_name = card_names[pci_id->driver_data];
404 const char *dev_name = pci_name(pci_dev);
406 /* when built into the kernel, we only print version if device is found */
408 static int printed_version;
409 if (!printed_version++)
413 /* setup various bits in PCI command register */
414 ret = pci_enable_device(pci_dev);
417 i = pci_set_dma_mask(pci_dev, SIS900_DMA_MASK);
419 printk(KERN_ERR "sis900.c: architecture does not support"
420 "32bit PCI busmaster DMA\n");
424 pci_set_master(pci_dev);
426 net_dev = alloc_etherdev(sizeof(struct sis900_private));
429 SET_MODULE_OWNER(net_dev);
430 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
432 /* We do a request_region() to register /proc/ioports info. */
433 ioaddr = pci_resource_start(pci_dev, 0);
434 ret = pci_request_regions(pci_dev, "sis900");
438 sis_priv = net_dev->priv;
439 net_dev->base_addr = ioaddr;
440 net_dev->irq = pci_dev->irq;
441 sis_priv->pci_dev = pci_dev;
442 spin_lock_init(&sis_priv->lock);
444 pci_set_drvdata(pci_dev, net_dev);
446 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
449 goto err_out_cleardev;
451 sis_priv->tx_ring = (BufferDesc *)ring_space;
452 sis_priv->tx_ring_dma = ring_dma;
454 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
459 sis_priv->rx_ring = (BufferDesc *)ring_space;
460 sis_priv->rx_ring_dma = ring_dma;
462 /* The SiS900-specific entries in the device structure. */
463 net_dev->open = &sis900_open;
464 net_dev->hard_start_xmit = &sis900_start_xmit;
465 net_dev->stop = &sis900_close;
466 net_dev->get_stats = &sis900_get_stats;
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]);
545 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
546 sis_priv->rx_ring_dma);
548 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
549 sis_priv->tx_ring_dma);
551 pci_set_drvdata(pci_dev, NULL);
552 pci_release_regions(pci_dev);
554 free_netdev(net_dev);
559 * sis900_mii_probe - Probe MII PHY for sis900
560 * @net_dev: the net device to probe for
562 * Search for total of 32 possible mii phy addresses.
563 * Identify and set current phy if found one,
564 * return error if it failed to found.
567 static int __init sis900_mii_probe(struct net_device * net_dev)
569 struct sis900_private * sis_priv = net_dev->priv;
570 const char *dev_name = pci_name(sis_priv->pci_dev);
571 u16 poll_bit = MII_STAT_LINK, status = 0;
572 unsigned long timeout = jiffies + 5 * HZ;
575 sis_priv->mii = NULL;
577 /* search for total of 32 possible mii phy addresses */
578 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
579 struct mii_phy * mii_phy = NULL;
584 for(i = 0; i < 2; i++)
585 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
587 if (mii_status == 0xffff || mii_status == 0x0000) {
588 if (netif_msg_probe(sis_priv))
589 printk(KERN_DEBUG "%s: MII at address %d"
595 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
596 printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n");
597 mii_phy = sis_priv->first_mii;
601 mii_phy = mii_phy->next;
607 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
608 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
609 mii_phy->phy_addr = phy_addr;
610 mii_phy->status = mii_status;
611 mii_phy->next = sis_priv->mii;
612 sis_priv->mii = mii_phy;
613 sis_priv->first_mii = mii_phy;
615 for (i = 0; mii_chip_table[i].phy_id1; i++)
616 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
617 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
618 mii_phy->phy_types = mii_chip_table[i].phy_types;
619 if (mii_chip_table[i].phy_types == MIX)
621 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
622 printk(KERN_INFO "%s: %s transceiver found "
625 mii_chip_table[i].name,
630 if( !mii_chip_table[i].phy_id1 ) {
631 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
633 mii_phy->phy_types = UNKNOWN;
637 if (sis_priv->mii == NULL) {
638 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
642 /* select default PHY for mac */
643 sis_priv->mii = NULL;
644 sis900_default_phy( net_dev );
646 /* Reset phy if default phy is internal sis900 */
647 if ((sis_priv->mii->phy_id0 == 0x001D) &&
648 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
649 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
651 /* workaround for ICS1893 PHY */
652 if ((sis_priv->mii->phy_id0 == 0x0015) &&
653 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
654 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
656 if(status & MII_STAT_LINK){
660 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
661 if (time_after_eq(jiffies, timeout)) {
662 printk(KERN_WARNING "%s: reset phy and link down now\n",
669 if (sis_priv->chipset_rev == SIS630E_900_REV) {
670 /* SiS 630E has some bugs on default value of PHY registers */
671 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
672 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
673 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
674 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
675 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
678 if (sis_priv->mii->status & MII_STAT_LINK)
679 netif_carrier_on(net_dev);
681 netif_carrier_off(net_dev);
687 * sis900_default_phy - Select default PHY for sis900 mac.
688 * @net_dev: the net device to probe for
690 * Select first detected PHY with link as default.
691 * If no one is link on, select PHY whose types is HOME as default.
692 * If HOME doesn't exist, select LAN.
695 static u16 sis900_default_phy(struct net_device * net_dev)
697 struct sis900_private * sis_priv = net_dev->priv;
698 struct mii_phy *phy = NULL, *phy_home = NULL,
699 *default_phy = NULL, *phy_lan = NULL;
702 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
703 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
704 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
706 /* Link ON & Not select default PHY & not ghost PHY */
707 if ((status & MII_STAT_LINK) && !default_phy &&
708 (phy->phy_types != UNKNOWN))
711 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
712 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
713 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
714 if (phy->phy_types == HOME)
716 else if(phy->phy_types == LAN)
721 if (!default_phy && phy_home)
722 default_phy = phy_home;
723 else if (!default_phy && phy_lan)
724 default_phy = phy_lan;
725 else if (!default_phy)
726 default_phy = sis_priv->first_mii;
728 if (sis_priv->mii != default_phy) {
729 sis_priv->mii = default_phy;
730 sis_priv->cur_phy = default_phy->phy_addr;
731 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
732 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
735 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
737 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
738 status &= (~MII_CNTL_ISOLATE);
740 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
741 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
742 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
749 * sis900_set_capability - set the media capability of network adapter.
750 * @net_dev : the net device to probe for
753 * Set the media capability of network adapter according to
754 * mii status register. It's necessary before auto-negotiate.
757 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
762 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
763 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
765 cap = MII_NWAY_CSMA_CD |
766 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
767 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
768 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
769 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
771 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
775 /* Delay between EEPROM clock transitions. */
776 #define eeprom_delay() inl(ee_addr)
779 * read_eeprom - Read Serial EEPROM
780 * @ioaddr: base i/o address
781 * @location: the EEPROM location to read
783 * Read Serial EEPROM through EEPROM Access Register.
784 * Note that location is in word (16 bits) unit
787 static u16 __devinit read_eeprom(long ioaddr, int location)
791 long ee_addr = ioaddr + mear;
792 u32 read_cmd = location | EEread;
799 /* Shift the read command (9) bits out. */
800 for (i = 8; i >= 0; i--) {
801 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
802 outl(dataval, ee_addr);
804 outl(dataval | EECLK, ee_addr);
810 /* read the 16-bits data in */
811 for (i = 16; i > 0; i--) {
814 outl(EECS | EECLK, ee_addr);
816 retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0);
820 /* Terminate the EEPROM access. */
827 /* Read and write the MII management registers using software-generated
828 serial MDIO protocol. Note that the command bits and data bits are
829 send out separately */
830 #define mdio_delay() inl(mdio_addr)
832 static void mdio_idle(long mdio_addr)
834 outl(MDIO | MDDIR, mdio_addr);
836 outl(MDIO | MDDIR | MDC, mdio_addr);
839 /* Syncronize the MII management interface by shifting 32 one bits out. */
840 static void mdio_reset(long mdio_addr)
844 for (i = 31; i >= 0; i--) {
845 outl(MDDIR | MDIO, mdio_addr);
847 outl(MDDIR | MDIO | MDC, mdio_addr);
854 * mdio_read - read MII PHY register
855 * @net_dev: the net device to read
856 * @phy_id: the phy address to read
857 * @location: the phy regiester id to read
859 * Read MII registers through MDIO and MDC
860 * using MDIO management frame structure and protocol(defined by ISO/IEC).
861 * Please see SiS7014 or ICS spec
864 static int mdio_read(struct net_device *net_dev, int phy_id, int location)
866 long mdio_addr = net_dev->base_addr + mear;
867 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
871 mdio_reset(mdio_addr);
872 mdio_idle(mdio_addr);
874 for (i = 15; i >= 0; i--) {
875 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
876 outl(dataval, mdio_addr);
878 outl(dataval | MDC, mdio_addr);
882 /* Read the 16 data bits. */
883 for (i = 16; i > 0; i--) {
886 retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0);
887 outl(MDC, mdio_addr);
890 outl(0x00, mdio_addr);
896 * mdio_write - write MII PHY register
897 * @net_dev: the net device to write
898 * @phy_id: the phy address to write
899 * @location: the phy regiester id to write
900 * @value: the register value to write with
902 * Write MII registers with @value through MDIO and MDC
903 * using MDIO management frame structure and protocol(defined by ISO/IEC)
904 * please see SiS7014 or ICS spec
907 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
910 long mdio_addr = net_dev->base_addr + mear;
911 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
914 mdio_reset(mdio_addr);
915 mdio_idle(mdio_addr);
917 /* Shift the command bits out. */
918 for (i = 15; i >= 0; i--) {
919 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
920 outb(dataval, mdio_addr);
922 outb(dataval | MDC, mdio_addr);
927 /* Shift the value bits out. */
928 for (i = 15; i >= 0; i--) {
929 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
930 outl(dataval, mdio_addr);
932 outl(dataval | MDC, mdio_addr);
937 /* Clear out extra bits. */
938 for (i = 2; i > 0; i--) {
941 outb(MDC, mdio_addr);
944 outl(0x00, mdio_addr);
951 * sis900_reset_phy - reset sis900 mii phy.
952 * @net_dev: the net device to write
953 * @phy_addr: default phy address
955 * Some specific phy can't work properly without reset.
956 * This function will be called during initialization and
957 * link status change from ON to DOWN.
960 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
966 status = mdio_read(net_dev, phy_addr, MII_STATUS);
968 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
973 #ifdef CONFIG_NET_POLL_CONTROLLER
975 * Polling 'interrupt' - used by things like netconsole to send skbs
976 * without having to re-enable interrupts. It's not called while
977 * the interrupt routine is executing.
979 static void sis900_poll(struct net_device *dev)
981 disable_irq(dev->irq);
982 sis900_interrupt(dev->irq, dev, NULL);
983 enable_irq(dev->irq);
988 * sis900_open - open sis900 device
989 * @net_dev: the net device to open
991 * Do some initialization and start net interface.
992 * enable interrupts and set sis900 timer.
996 sis900_open(struct net_device *net_dev)
998 struct sis900_private *sis_priv = net_dev->priv;
999 long ioaddr = net_dev->base_addr;
1002 /* Soft reset the chip. */
1003 sis900_reset(net_dev);
1005 /* Equalizer workaround Rule */
1006 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1008 ret = request_irq(net_dev->irq, &sis900_interrupt, SA_SHIRQ,
1009 net_dev->name, net_dev);
1013 sis900_init_rxfilter(net_dev);
1015 sis900_init_tx_ring(net_dev);
1016 sis900_init_rx_ring(net_dev);
1018 set_rx_mode(net_dev);
1020 netif_start_queue(net_dev);
1022 /* Workaround for EDB */
1023 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1025 /* Enable all known interrupts by setting the interrupt mask. */
1026 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1027 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
1028 outl(IE, ioaddr + ier);
1030 sis900_check_mode(net_dev, sis_priv->mii);
1032 /* Set the timer to switch to check for link beat and perhaps switch
1033 to an alternate media type. */
1034 init_timer(&sis_priv->timer);
1035 sis_priv->timer.expires = jiffies + HZ;
1036 sis_priv->timer.data = (unsigned long)net_dev;
1037 sis_priv->timer.function = &sis900_timer;
1038 add_timer(&sis_priv->timer);
1044 * sis900_init_rxfilter - Initialize the Rx filter
1045 * @net_dev: the net device to initialize for
1047 * Set receive filter address to our MAC address
1048 * and enable packet filtering.
1052 sis900_init_rxfilter (struct net_device * net_dev)
1054 struct sis900_private *sis_priv = net_dev->priv;
1055 long ioaddr = net_dev->base_addr;
1059 rfcrSave = inl(rfcr + ioaddr);
1061 /* disable packet filtering before setting filter */
1062 outl(rfcrSave & ~RFEN, rfcr + ioaddr);
1064 /* load MAC addr to filter data register */
1065 for (i = 0 ; i < 3 ; i++) {
1068 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1069 outl((i << RFADDR_shift), ioaddr + rfcr);
1070 outl(w, ioaddr + rfdr);
1072 if (netif_msg_hw(sis_priv)) {
1073 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1074 net_dev->name, i, inl(ioaddr + rfdr));
1078 /* enable packet filtering */
1079 outl(rfcrSave | RFEN, rfcr + ioaddr);
1083 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1084 * @net_dev: the net device to initialize for
1086 * Initialize the Tx descriptor ring,
1090 sis900_init_tx_ring(struct net_device *net_dev)
1092 struct sis900_private *sis_priv = net_dev->priv;
1093 long ioaddr = net_dev->base_addr;
1096 sis_priv->tx_full = 0;
1097 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1099 for (i = 0; i < NUM_TX_DESC; i++) {
1100 sis_priv->tx_skbuff[i] = NULL;
1102 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1103 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1104 sis_priv->tx_ring[i].cmdsts = 0;
1105 sis_priv->tx_ring[i].bufptr = 0;
1108 /* load Transmit Descriptor Register */
1109 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1110 if (netif_msg_hw(sis_priv))
1111 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1112 net_dev->name, inl(ioaddr + txdp));
1116 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1117 * @net_dev: the net device to initialize for
1119 * Initialize the Rx descriptor ring,
1120 * and pre-allocate recevie buffers (socket buffer)
1124 sis900_init_rx_ring(struct net_device *net_dev)
1126 struct sis900_private *sis_priv = net_dev->priv;
1127 long ioaddr = net_dev->base_addr;
1130 sis_priv->cur_rx = 0;
1131 sis_priv->dirty_rx = 0;
1133 /* init RX descriptor */
1134 for (i = 0; i < NUM_RX_DESC; i++) {
1135 sis_priv->rx_skbuff[i] = NULL;
1137 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1138 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1139 sis_priv->rx_ring[i].cmdsts = 0;
1140 sis_priv->rx_ring[i].bufptr = 0;
1143 /* allocate sock buffers */
1144 for (i = 0; i < NUM_RX_DESC; i++) {
1145 struct sk_buff *skb;
1147 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1148 /* not enough memory for skbuff, this makes a "hole"
1149 on the buffer ring, it is not clear how the
1150 hardware will react to this kind of degenerated
1155 sis_priv->rx_skbuff[i] = skb;
1156 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1157 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
1158 skb->tail, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1160 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1162 /* load Receive Descriptor Register */
1163 outl(sis_priv->rx_ring_dma, ioaddr + rxdp);
1164 if (netif_msg_hw(sis_priv))
1165 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1166 net_dev->name, inl(ioaddr + rxdp));
1170 * sis630_set_eq - set phy equalizer value for 630 LAN
1171 * @net_dev: the net device to set equalizer value
1172 * @revision: 630 LAN revision number
1174 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1175 * PHY register 14h(Test)
1176 * Bit 14: 0 -- Automatically dectect (default)
1177 * 1 -- Manually set Equalizer filter
1178 * Bit 13: 0 -- (Default)
1179 * 1 -- Speed up convergence of equalizer setting
1180 * Bit 9 : 0 -- (Default)
1181 * 1 -- Disable Baseline Wander
1182 * Bit 3~7 -- Equalizer filter setting
1183 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1184 * Then calculate equalizer value
1185 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1186 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1187 * Calculate Equalizer value:
1188 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-dectect proper equalizer value.
1189 * When the equalizer is stable, this value is not a fixed value. It will be within
1190 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1191 * 0 <= max <= 4 --> set equalizer to max
1192 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1193 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1196 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1198 struct sis900_private *sis_priv = net_dev->priv;
1199 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1202 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1203 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1206 if (netif_carrier_ok(net_dev)) {
1207 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1208 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1209 (0x2200 | reg14h) & 0xBFFF);
1210 for (i=0; i < maxcount; i++) {
1211 eq_value = (0x00F8 & mdio_read(net_dev,
1212 sis_priv->cur_phy, MII_RESV)) >> 3;
1214 max_value=min_value=eq_value;
1215 max_value = (eq_value > max_value) ?
1216 eq_value : max_value;
1217 min_value = (eq_value < min_value) ?
1218 eq_value : min_value;
1220 /* 630E rule to determine the equalizer value */
1221 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1222 revision == SIS630ET_900_REV) {
1224 eq_value = max_value;
1225 else if (max_value >= 5 && max_value < 15)
1226 eq_value = (max_value == min_value) ?
1227 max_value+2 : max_value+1;
1228 else if (max_value >= 15)
1229 eq_value=(max_value == min_value) ?
1230 max_value+6 : max_value+5;
1232 /* 630B0&B1 rule to determine the equalizer value */
1233 if (revision == SIS630A_900_REV &&
1234 (sis_priv->host_bridge_rev == SIS630B0 ||
1235 sis_priv->host_bridge_rev == SIS630B1)) {
1239 eq_value = (max_value + min_value + 1)/2;
1241 /* write equalizer value and setting */
1242 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1243 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1244 reg14h = (reg14h | 0x6000) & 0xFDFF;
1245 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1247 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1248 if (revision == SIS630A_900_REV &&
1249 (sis_priv->host_bridge_rev == SIS630B0 ||
1250 sis_priv->host_bridge_rev == SIS630B1))
1251 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1252 (reg14h | 0x2200) & 0xBFFF);
1254 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1255 (reg14h | 0x2000) & 0xBFFF);
1261 * sis900_timer - sis900 timer routine
1262 * @data: pointer to sis900 net device
1264 * On each timer ticks we check two things,
1265 * link status (ON/OFF) and link mode (10/100/Full/Half)
1268 static void sis900_timer(unsigned long data)
1270 struct net_device *net_dev = (struct net_device *)data;
1271 struct sis900_private *sis_priv = net_dev->priv;
1272 struct mii_phy *mii_phy = sis_priv->mii;
1273 static int next_tick = 5*HZ;
1276 if (!sis_priv->autong_complete){
1277 int speed, duplex = 0;
1279 sis900_read_mode(net_dev, &speed, &duplex);
1281 sis900_set_mode(net_dev->base_addr, speed, duplex);
1282 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1283 netif_start_queue(net_dev);
1286 sis_priv->timer.expires = jiffies + HZ;
1287 add_timer(&sis_priv->timer);
1291 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1292 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1294 /* Link OFF -> ON */
1295 if (!netif_carrier_ok(net_dev)) {
1297 /* Search for new PHY */
1298 status = sis900_default_phy(net_dev);
1299 mii_phy = sis_priv->mii;
1301 if (status & MII_STAT_LINK){
1302 sis900_check_mode(net_dev, mii_phy);
1303 netif_carrier_on(net_dev);
1306 /* Link ON -> OFF */
1307 if (!(status & MII_STAT_LINK)){
1308 netif_carrier_off(net_dev);
1309 if(netif_msg_link(sis_priv))
1310 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1312 /* Change mode issue */
1313 if ((mii_phy->phy_id0 == 0x001D) &&
1314 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1315 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1317 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1323 sis_priv->timer.expires = jiffies + next_tick;
1324 add_timer(&sis_priv->timer);
1328 * sis900_check_mode - check the media mode for sis900
1329 * @net_dev: the net device to be checked
1330 * @mii_phy: the mii phy
1332 * Older driver gets the media mode from mii status output
1333 * register. Now we set our media capability and auto-negotiate
1334 * to get the upper bound of speed and duplex between two ends.
1335 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1336 * and autong_complete should be set to 1.
1339 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1341 struct sis900_private *sis_priv = net_dev->priv;
1342 long ioaddr = net_dev->base_addr;
1345 if (mii_phy->phy_types == LAN) {
1346 outl(~EXD & inl(ioaddr + cfg), ioaddr + cfg);
1347 sis900_set_capability(net_dev , mii_phy);
1348 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1350 outl(EXD | inl(ioaddr + cfg), ioaddr + cfg);
1351 speed = HW_SPEED_HOME;
1352 duplex = FDX_CAPABLE_HALF_SELECTED;
1353 sis900_set_mode(ioaddr, speed, duplex);
1354 sis_priv->autong_complete = 1;
1359 * sis900_set_mode - Set the media mode of mac register.
1360 * @ioaddr: the address of the device
1361 * @speed : the transmit speed to be determined
1362 * @duplex: the duplex mode to be determined
1364 * Set the media mode of mac register txcfg/rxcfg according to
1365 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1366 * bus is used instead of PCI bus. When this bit is set 1, the
1367 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1371 static void sis900_set_mode (long ioaddr, int speed, int duplex)
1373 u32 tx_flags = 0, rx_flags = 0;
1375 if (inl(ioaddr + cfg) & EDB_MASTER_EN) {
1376 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1377 (TX_FILL_THRESH << TxFILLT_shift);
1378 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1380 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1381 (TX_FILL_THRESH << TxFILLT_shift);
1382 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1385 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1386 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1387 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1389 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1390 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1393 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1394 tx_flags |= (TxCSI | TxHBI);
1398 outl (tx_flags, ioaddr + txcfg);
1399 outl (rx_flags, ioaddr + rxcfg);
1403 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1404 * @net_dev: the net device to read mode for
1405 * @phy_addr: mii phy address
1407 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1408 * autong_complete should be set to 0 when starting auto-negotiation.
1409 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1410 * sis900_timer will wait for link on again if autong_complete = 0.
1413 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1415 struct sis900_private *sis_priv = net_dev->priv;
1420 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1422 if (!(status & MII_STAT_LINK)){
1423 if(netif_msg_link(sis_priv))
1424 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1425 sis_priv->autong_complete = 1;
1426 netif_carrier_off(net_dev);
1430 /* (Re)start AutoNegotiate */
1431 mdio_write(net_dev, phy_addr, MII_CONTROL,
1432 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1433 sis_priv->autong_complete = 0;
1438 * sis900_read_mode - read media mode for sis900 internal phy
1439 * @net_dev: the net device to read mode for
1440 * @speed : the transmit speed to be determined
1441 * @duplex : the duplex mode to be determined
1443 * The capability of remote end will be put in mii register autorec
1444 * after auto-negotiation. Use AND operation to get the upper bound
1445 * of speed and duplex between two ends.
1448 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1450 struct sis900_private *sis_priv = net_dev->priv;
1451 struct mii_phy *phy = sis_priv->mii;
1452 int phy_addr = sis_priv->cur_phy;
1454 u16 autoadv, autorec;
1458 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1460 if (!(status & MII_STAT_LINK))
1463 /* AutoNegotiate completed */
1464 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1465 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1466 status = autoadv & autorec;
1468 *speed = HW_SPEED_10_MBPS;
1469 *duplex = FDX_CAPABLE_HALF_SELECTED;
1471 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1472 *speed = HW_SPEED_100_MBPS;
1473 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1474 *duplex = FDX_CAPABLE_FULL_SELECTED;
1476 sis_priv->autong_complete = 1;
1478 /* Workaround for Realtek RTL8201 PHY issue */
1479 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1480 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1481 *duplex = FDX_CAPABLE_FULL_SELECTED;
1482 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1483 *speed = HW_SPEED_100_MBPS;
1486 if(netif_msg_link(sis_priv))
1487 printk(KERN_INFO "%s: Media Link On %s %s-duplex \n",
1489 *speed == HW_SPEED_100_MBPS ?
1490 "100mbps" : "10mbps",
1491 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1496 * sis900_tx_timeout - sis900 transmit timeout routine
1497 * @net_dev: the net device to transmit
1499 * print transmit timeout status
1500 * disable interrupts and do some tasks
1503 static void sis900_tx_timeout(struct net_device *net_dev)
1505 struct sis900_private *sis_priv = net_dev->priv;
1506 long ioaddr = net_dev->base_addr;
1507 unsigned long flags;
1510 if(netif_msg_tx_err(sis_priv))
1511 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x \n",
1512 net_dev->name, inl(ioaddr + cr), inl(ioaddr + isr));
1514 /* Disable interrupts by clearing the interrupt mask. */
1515 outl(0x0000, ioaddr + imr);
1517 /* use spinlock to prevent interrupt handler accessing buffer ring */
1518 spin_lock_irqsave(&sis_priv->lock, flags);
1520 /* discard unsent packets */
1521 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1522 for (i = 0; i < NUM_TX_DESC; i++) {
1523 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1526 pci_unmap_single(sis_priv->pci_dev,
1527 sis_priv->tx_ring[i].bufptr, skb->len,
1529 dev_kfree_skb_irq(skb);
1530 sis_priv->tx_skbuff[i] = NULL;
1531 sis_priv->tx_ring[i].cmdsts = 0;
1532 sis_priv->tx_ring[i].bufptr = 0;
1533 sis_priv->stats.tx_dropped++;
1536 sis_priv->tx_full = 0;
1537 netif_wake_queue(net_dev);
1539 spin_unlock_irqrestore(&sis_priv->lock, flags);
1541 net_dev->trans_start = jiffies;
1543 /* load Transmit Descriptor Register */
1544 outl(sis_priv->tx_ring_dma, ioaddr + txdp);
1546 /* Enable all known interrupts by setting the interrupt mask. */
1547 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
1552 * sis900_start_xmit - sis900 start transmit routine
1553 * @skb: socket buffer pointer to put the data being transmitted
1554 * @net_dev: the net device to transmit with
1556 * Set the transmit buffer descriptor,
1557 * and write TxENA to enable transmit state machine.
1558 * tell upper layer if the buffer is full
1562 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1564 struct sis900_private *sis_priv = net_dev->priv;
1565 long ioaddr = net_dev->base_addr;
1567 unsigned long flags;
1568 unsigned int index_cur_tx, index_dirty_tx;
1569 unsigned int count_dirty_tx;
1571 /* Don't transmit data before the complete of auto-negotiation */
1572 if(!sis_priv->autong_complete){
1573 netif_stop_queue(net_dev);
1577 spin_lock_irqsave(&sis_priv->lock, flags);
1579 /* Calculate the next Tx descriptor entry. */
1580 entry = sis_priv->cur_tx % NUM_TX_DESC;
1581 sis_priv->tx_skbuff[entry] = skb;
1583 /* set the transmit buffer descriptor and enable Transmit State Machine */
1584 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1585 skb->data, skb->len, PCI_DMA_TODEVICE);
1586 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1587 outl(TxENA | inl(ioaddr + cr), ioaddr + cr);
1589 sis_priv->cur_tx ++;
1590 index_cur_tx = sis_priv->cur_tx;
1591 index_dirty_tx = sis_priv->dirty_tx;
1593 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1596 if (index_cur_tx == index_dirty_tx) {
1597 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1598 sis_priv->tx_full = 1;
1599 netif_stop_queue(net_dev);
1600 } else if (count_dirty_tx < NUM_TX_DESC) {
1601 /* Typical path, tell upper layer that more transmission is possible */
1602 netif_start_queue(net_dev);
1604 /* buffer full, tell upper layer no more transmission */
1605 sis_priv->tx_full = 1;
1606 netif_stop_queue(net_dev);
1609 spin_unlock_irqrestore(&sis_priv->lock, flags);
1611 net_dev->trans_start = jiffies;
1613 if (netif_msg_tx_queued(sis_priv))
1614 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1616 net_dev->name, skb->data, (int)skb->len, entry);
1622 * sis900_interrupt - sis900 interrupt handler
1623 * @irq: the irq number
1624 * @dev_instance: the client data object
1625 * @regs: snapshot of processor context
1627 * The interrupt handler does all of the Rx thread work,
1628 * and cleans up after the Tx thread
1631 static irqreturn_t sis900_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
1633 struct net_device *net_dev = dev_instance;
1634 struct sis900_private *sis_priv = net_dev->priv;
1635 int boguscnt = max_interrupt_work;
1636 long ioaddr = net_dev->base_addr;
1638 unsigned int handled = 0;
1640 spin_lock (&sis_priv->lock);
1643 status = inl(ioaddr + isr);
1645 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1646 /* nothing intresting happened */
1650 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1651 if (status & (RxORN | RxERR | RxOK))
1655 if (status & (TxURN | TxERR | TxIDLE))
1657 sis900_finish_xmit(net_dev);
1659 /* something strange happened !!! */
1660 if (status & HIBERR) {
1661 if(netif_msg_intr(sis_priv))
1662 printk(KERN_INFO "%s: Abnormal interrupt,"
1663 "status %#8.8x.\n", net_dev->name, status);
1666 if (--boguscnt < 0) {
1667 if(netif_msg_intr(sis_priv))
1668 printk(KERN_INFO "%s: Too much work at interrupt, "
1669 "interrupt status = %#8.8x.\n",
1670 net_dev->name, status);
1675 if(netif_msg_intr(sis_priv))
1676 printk(KERN_DEBUG "%s: exiting interrupt, "
1677 "interrupt status = 0x%#8.8x.\n",
1678 net_dev->name, inl(ioaddr + isr));
1680 spin_unlock (&sis_priv->lock);
1681 return IRQ_RETVAL(handled);
1685 * sis900_rx - sis900 receive routine
1686 * @net_dev: the net device which receives data
1688 * Process receive interrupt events,
1689 * put buffer to higher layer and refill buffer pool
1690 * Note: This fucntion is called by interrupt handler,
1691 * don't do "too much" work here
1694 static int sis900_rx(struct net_device *net_dev)
1696 struct sis900_private *sis_priv = net_dev->priv;
1697 long ioaddr = net_dev->base_addr;
1698 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1699 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1701 if (netif_msg_rx_status(sis_priv))
1702 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1704 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1706 while (rx_status & OWN) {
1707 unsigned int rx_size;
1709 rx_size = (rx_status & DSIZE) - CRC_SIZE;
1711 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1712 /* corrupted packet received */
1713 if (netif_msg_rx_err(sis_priv))
1714 printk(KERN_DEBUG "%s: Corrupted packet "
1715 "received, buffer status = 0x%8.8x.\n",
1716 net_dev->name, rx_status);
1717 sis_priv->stats.rx_errors++;
1718 if (rx_status & OVERRUN)
1719 sis_priv->stats.rx_over_errors++;
1720 if (rx_status & (TOOLONG|RUNT))
1721 sis_priv->stats.rx_length_errors++;
1722 if (rx_status & (RXISERR | FAERR))
1723 sis_priv->stats.rx_frame_errors++;
1724 if (rx_status & CRCERR)
1725 sis_priv->stats.rx_crc_errors++;
1726 /* reset buffer descriptor state */
1727 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1729 struct sk_buff * skb;
1731 /* This situation should never happen, but due to
1732 some unknow bugs, it is possible that
1733 we are working on NULL sk_buff :-( */
1734 if (sis_priv->rx_skbuff[entry] == NULL) {
1735 if (netif_msg_rx_err(sis_priv))
1736 printk(KERN_INFO "%s: NULL pointer "
1737 "encountered in Rx ring, skipping\n",
1742 pci_unmap_single(sis_priv->pci_dev,
1743 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1744 PCI_DMA_FROMDEVICE);
1745 /* give the socket buffer to upper layers */
1746 skb = sis_priv->rx_skbuff[entry];
1747 skb_put(skb, rx_size);
1748 skb->protocol = eth_type_trans(skb, net_dev);
1751 /* some network statistics */
1752 if ((rx_status & BCAST) == MCAST)
1753 sis_priv->stats.multicast++;
1754 net_dev->last_rx = jiffies;
1755 sis_priv->stats.rx_bytes += rx_size;
1756 sis_priv->stats.rx_packets++;
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) {
1761 /* not enough memory for skbuff, this makes a
1762 * "hole" on the buffer ring, it is not clear
1763 * how the hardware will react to this kind
1764 * of degenerated buffer */
1765 if (netif_msg_rx_status(sis_priv))
1766 printk(KERN_INFO "%s: Memory squeeze,"
1767 "deferring packet.\n",
1769 sis_priv->rx_skbuff[entry] = NULL;
1770 /* reset buffer descriptor state */
1771 sis_priv->rx_ring[entry].cmdsts = 0;
1772 sis_priv->rx_ring[entry].bufptr = 0;
1773 sis_priv->stats.rx_dropped++;
1777 sis_priv->rx_skbuff[entry] = skb;
1778 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1779 sis_priv->rx_ring[entry].bufptr =
1780 pci_map_single(sis_priv->pci_dev, skb->tail,
1781 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1782 sis_priv->dirty_rx++;
1785 entry = sis_priv->cur_rx % NUM_RX_DESC;
1786 rx_status = sis_priv->rx_ring[entry].cmdsts;
1789 /* refill the Rx buffer, what if the rate of refilling is slower
1790 * than consuming ?? */
1791 for (;sis_priv->cur_rx - sis_priv->dirty_rx > 0; sis_priv->dirty_rx++) {
1792 struct sk_buff *skb;
1794 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1796 if (sis_priv->rx_skbuff[entry] == NULL) {
1797 if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) {
1798 /* not enough memory for skbuff, this makes a
1799 * "hole" on the buffer ring, it is not clear
1800 * how the hardware will react to this kind
1801 * of degenerated buffer */
1802 if (netif_msg_rx_err(sis_priv))
1803 printk(KERN_INFO "%s: Memory squeeze,"
1804 "deferring packet.\n",
1806 sis_priv->stats.rx_dropped++;
1810 sis_priv->rx_skbuff[entry] = skb;
1811 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1812 sis_priv->rx_ring[entry].bufptr =
1813 pci_map_single(sis_priv->pci_dev, skb->tail,
1814 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1817 /* re-enable the potentially idle receive state matchine */
1818 outl(RxENA | inl(ioaddr + cr), ioaddr + cr );
1824 * sis900_finish_xmit - finish up transmission of packets
1825 * @net_dev: the net device to be transmitted on
1827 * Check for error condition and free socket buffer etc
1828 * schedule for more transmission as needed
1829 * Note: This fucntion is called by interrupt handler,
1830 * don't do "too much" work here
1833 static void sis900_finish_xmit (struct net_device *net_dev)
1835 struct sis900_private *sis_priv = net_dev->priv;
1837 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1838 struct sk_buff *skb;
1842 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1843 tx_status = sis_priv->tx_ring[entry].cmdsts;
1845 if (tx_status & OWN) {
1846 /* The packet is not transmitted yet (owned by hardware) !
1847 * Note: the interrupt is generated only when Tx Machine
1848 * is idle, so this is an almost impossible case */
1852 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1853 /* packet unsuccessfully transmitted */
1854 if (netif_msg_tx_err(sis_priv))
1855 printk(KERN_DEBUG "%s: Transmit "
1856 "error, Tx status %8.8x.\n",
1857 net_dev->name, tx_status);
1858 sis_priv->stats.tx_errors++;
1859 if (tx_status & UNDERRUN)
1860 sis_priv->stats.tx_fifo_errors++;
1861 if (tx_status & ABORT)
1862 sis_priv->stats.tx_aborted_errors++;
1863 if (tx_status & NOCARRIER)
1864 sis_priv->stats.tx_carrier_errors++;
1865 if (tx_status & OWCOLL)
1866 sis_priv->stats.tx_window_errors++;
1868 /* packet successfully transmitted */
1869 sis_priv->stats.collisions += (tx_status & COLCNT) >> 16;
1870 sis_priv->stats.tx_bytes += tx_status & DSIZE;
1871 sis_priv->stats.tx_packets++;
1873 /* Free the original skb. */
1874 skb = sis_priv->tx_skbuff[entry];
1875 pci_unmap_single(sis_priv->pci_dev,
1876 sis_priv->tx_ring[entry].bufptr, skb->len,
1878 dev_kfree_skb_irq(skb);
1879 sis_priv->tx_skbuff[entry] = NULL;
1880 sis_priv->tx_ring[entry].bufptr = 0;
1881 sis_priv->tx_ring[entry].cmdsts = 0;
1884 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1885 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1886 /* The ring is no longer full, clear tx_full and schedule
1887 * more transmission by netif_wake_queue(net_dev) */
1888 sis_priv->tx_full = 0;
1889 netif_wake_queue (net_dev);
1894 * sis900_close - close sis900 device
1895 * @net_dev: the net device to be closed
1897 * Disable interrupts, stop the Tx and Rx Status Machine
1898 * free Tx and RX socket buffer
1901 static int sis900_close(struct net_device *net_dev)
1903 long ioaddr = net_dev->base_addr;
1904 struct sis900_private *sis_priv = net_dev->priv;
1905 struct sk_buff *skb;
1908 netif_stop_queue(net_dev);
1910 /* Disable interrupts by clearing the interrupt mask. */
1911 outl(0x0000, ioaddr + imr);
1912 outl(0x0000, ioaddr + ier);
1914 /* Stop the chip's Tx and Rx Status Machine */
1915 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
1917 del_timer(&sis_priv->timer);
1919 free_irq(net_dev->irq, net_dev);
1921 /* Free Tx and RX skbuff */
1922 for (i = 0; i < NUM_RX_DESC; i++) {
1923 skb = sis_priv->rx_skbuff[i];
1925 pci_unmap_single(sis_priv->pci_dev,
1926 sis_priv->rx_ring[i].bufptr,
1927 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1929 sis_priv->rx_skbuff[i] = NULL;
1932 for (i = 0; i < NUM_TX_DESC; i++) {
1933 skb = sis_priv->tx_skbuff[i];
1935 pci_unmap_single(sis_priv->pci_dev,
1936 sis_priv->tx_ring[i].bufptr, skb->len,
1939 sis_priv->tx_skbuff[i] = NULL;
1943 /* Green! Put the chip in low-power mode. */
1949 * sis900_get_drvinfo - Return information about driver
1950 * @net_dev: the net device to probe
1951 * @info: container for info returned
1953 * Process ethtool command such as "ehtool -i" to show information
1956 static void sis900_get_drvinfo(struct net_device *net_dev,
1957 struct ethtool_drvinfo *info)
1959 struct sis900_private *sis_priv = net_dev->priv;
1961 strcpy (info->driver, SIS900_MODULE_NAME);
1962 strcpy (info->version, SIS900_DRV_VERSION);
1963 strcpy (info->bus_info, pci_name(sis_priv->pci_dev));
1966 static u32 sis900_get_msglevel(struct net_device *net_dev)
1968 struct sis900_private *sis_priv = net_dev->priv;
1969 return sis_priv->msg_enable;
1972 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
1974 struct sis900_private *sis_priv = net_dev->priv;
1975 sis_priv->msg_enable = value;
1978 static u32 sis900_get_link(struct net_device *net_dev)
1980 struct sis900_private *sis_priv = net_dev->priv;
1981 return mii_link_ok(&sis_priv->mii_info);
1984 static int sis900_get_settings(struct net_device *net_dev,
1985 struct ethtool_cmd *cmd)
1987 struct sis900_private *sis_priv = net_dev->priv;
1988 spin_lock_irq(&sis_priv->lock);
1989 mii_ethtool_gset(&sis_priv->mii_info, cmd);
1990 spin_unlock_irq(&sis_priv->lock);
1994 static int sis900_set_settings(struct net_device *net_dev,
1995 struct ethtool_cmd *cmd)
1997 struct sis900_private *sis_priv = net_dev->priv;
1999 spin_lock_irq(&sis_priv->lock);
2000 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2001 spin_unlock_irq(&sis_priv->lock);
2005 static int sis900_nway_reset(struct net_device *net_dev)
2007 struct sis900_private *sis_priv = net_dev->priv;
2008 return mii_nway_restart(&sis_priv->mii_info);
2011 static struct ethtool_ops sis900_ethtool_ops = {
2012 .get_drvinfo = sis900_get_drvinfo,
2013 .get_msglevel = sis900_get_msglevel,
2014 .set_msglevel = sis900_set_msglevel,
2015 .get_link = sis900_get_link,
2016 .get_settings = sis900_get_settings,
2017 .set_settings = sis900_set_settings,
2018 .nway_reset = sis900_nway_reset,
2022 * mii_ioctl - process MII i/o control command
2023 * @net_dev: the net device to command for
2024 * @rq: parameter for command
2025 * @cmd: the i/o command
2027 * Process MII command like read/write MII register
2030 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2032 struct sis900_private *sis_priv = net_dev->priv;
2033 struct mii_ioctl_data *data = if_mii(rq);
2036 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2037 data->phy_id = sis_priv->mii->phy_addr;
2040 case SIOCGMIIREG: /* Read MII PHY register. */
2041 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2044 case SIOCSMIIREG: /* Write MII PHY register. */
2045 if (!capable(CAP_NET_ADMIN))
2047 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2055 * sis900_get_stats - Get sis900 read/write statistics
2056 * @net_dev: the net device to get statistics for
2058 * get tx/rx statistics for sis900
2061 static struct net_device_stats *
2062 sis900_get_stats(struct net_device *net_dev)
2064 struct sis900_private *sis_priv = net_dev->priv;
2066 return &sis_priv->stats;
2070 * sis900_set_config - Set media type by net_device.set_config
2071 * @dev: the net device for media type change
2072 * @map: ifmap passed by ifconfig
2074 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2075 * we support only port changes. All other runtime configuration
2076 * changes will be ignored
2079 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2081 struct sis900_private *sis_priv = dev->priv;
2082 struct mii_phy *mii_phy = sis_priv->mii;
2086 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2087 /* we switch on the ifmap->port field. I couldn't find anything
2088 * like a definition or standard for the values of that field.
2089 * I think the meaning of those values is device specific. But
2090 * since I would like to change the media type via the ifconfig
2091 * command I use the definition from linux/netdevice.h
2092 * (which seems to be different from the ifport(pcmcia) definition) */
2094 case IF_PORT_UNKNOWN: /* use auto here */
2095 dev->if_port = map->port;
2096 /* we are going to change the media type, so the Link
2097 * will be temporary down and we need to reflect that
2098 * here. When the Link comes up again, it will be
2099 * sensed by the sis_timer procedure, which also does
2100 * all the rest for us */
2101 netif_carrier_off(dev);
2103 /* read current state */
2104 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2106 /* enable auto negotiation and reset the negotioation
2107 * (I don't really know what the auto negatiotiation
2108 * reset really means, but it sounds for me right to
2110 mdio_write(dev, mii_phy->phy_addr,
2111 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2115 case IF_PORT_10BASET: /* 10BaseT */
2116 dev->if_port = map->port;
2118 /* we are going to change the media type, so the Link
2119 * will be temporary down and we need to reflect that
2120 * here. When the Link comes up again, it will be
2121 * sensed by the sis_timer procedure, which also does
2122 * all the rest for us */
2123 netif_carrier_off(dev);
2125 /* set Speed to 10Mbps */
2126 /* read current state */
2127 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2129 /* disable auto negotiation and force 10MBit mode*/
2130 mdio_write(dev, mii_phy->phy_addr,
2131 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2135 case IF_PORT_100BASET: /* 100BaseT */
2136 case IF_PORT_100BASETX: /* 100BaseTx */
2137 dev->if_port = map->port;
2139 /* we are going to change the media type, so the Link
2140 * will be temporary down and we need to reflect that
2141 * here. When the Link comes up again, it will be
2142 * sensed by the sis_timer procedure, which also does
2143 * all the rest for us */
2144 netif_carrier_off(dev);
2146 /* set Speed to 100Mbps */
2147 /* disable auto negotiation and enable 100MBit Mode */
2148 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2149 mdio_write(dev, mii_phy->phy_addr,
2150 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2155 case IF_PORT_10BASE2: /* 10Base2 */
2156 case IF_PORT_AUI: /* AUI */
2157 case IF_PORT_100BASEFX: /* 100BaseFx */
2158 /* These Modes are not supported (are they?)*/
2170 * sis900_mcast_bitnr - compute hashtable index
2171 * @addr: multicast address
2172 * @revision: revision id of chip
2174 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2175 * hash table, which makes this function a little bit different from other drivers
2176 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2177 * multicast hash table.
2180 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2183 u32 crc = ether_crc(6, addr);
2185 /* leave 8 or 7 most siginifant bits */
2186 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2187 return ((int)(crc >> 24));
2189 return ((int)(crc >> 25));
2193 * set_rx_mode - Set SiS900 receive mode
2194 * @net_dev: the net device to be set
2196 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2197 * And set the appropriate multicast filter.
2198 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2201 static void set_rx_mode(struct net_device *net_dev)
2203 long ioaddr = net_dev->base_addr;
2204 struct sis900_private * sis_priv = net_dev->priv;
2205 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2206 int i, table_entries;
2209 /* 635 Hash Table entires = 256(2^16) */
2210 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2211 (sis_priv->chipset_rev == SIS900B_900_REV))
2216 if (net_dev->flags & IFF_PROMISC) {
2217 /* Accept any kinds of packets */
2218 rx_mode = RFPromiscuous;
2219 for (i = 0; i < table_entries; i++)
2220 mc_filter[i] = 0xffff;
2221 } else if ((net_dev->mc_count > multicast_filter_limit) ||
2222 (net_dev->flags & IFF_ALLMULTI)) {
2223 /* too many multicast addresses or accept all multicast packet */
2224 rx_mode = RFAAB | RFAAM;
2225 for (i = 0; i < table_entries; i++)
2226 mc_filter[i] = 0xffff;
2228 /* Accept Broadcast packet, destination address matchs our
2229 * MAC address, use Receive Filter to reject unwanted MCAST
2231 struct dev_mc_list *mclist;
2233 for (i = 0, mclist = net_dev->mc_list;
2234 mclist && i < net_dev->mc_count;
2235 i++, mclist = mclist->next) {
2236 unsigned int bit_nr =
2237 sis900_mcast_bitnr(mclist->dmi_addr, sis_priv->chipset_rev);
2238 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2242 /* update Multicast Hash Table in Receive Filter */
2243 for (i = 0; i < table_entries; i++) {
2244 /* why plus 0x04 ??, That makes the correct value for hash table. */
2245 outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr);
2246 outl(mc_filter[i], ioaddr + rfdr);
2249 outl(RFEN | rx_mode, ioaddr + rfcr);
2251 /* sis900 is capable of looping back packets at MAC level for
2252 * debugging purpose */
2253 if (net_dev->flags & IFF_LOOPBACK) {
2255 /* We must disable Tx/Rx before setting loopback mode */
2256 cr_saved = inl(ioaddr + cr);
2257 outl(cr_saved | TxDIS | RxDIS, ioaddr + cr);
2258 /* enable loopback */
2259 outl(inl(ioaddr + txcfg) | TxMLB, ioaddr + txcfg);
2260 outl(inl(ioaddr + rxcfg) | RxATX, ioaddr + rxcfg);
2262 outl(cr_saved, ioaddr + cr);
2269 * sis900_reset - Reset sis900 MAC
2270 * @net_dev: the net device to reset
2272 * reset sis900 MAC and wait until finished
2273 * reset through command register
2274 * change backoff algorithm for 900B0 & 635 M/B
2277 static void sis900_reset(struct net_device *net_dev)
2279 struct sis900_private * sis_priv = net_dev->priv;
2280 long ioaddr = net_dev->base_addr;
2282 u32 status = TxRCMP | RxRCMP;
2284 outl(0, ioaddr + ier);
2285 outl(0, ioaddr + imr);
2286 outl(0, ioaddr + rfcr);
2288 outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr);
2290 /* Check that the chip has finished the reset. */
2291 while (status && (i++ < 1000)) {
2292 status ^= (inl(isr + ioaddr) & status);
2295 if( (sis_priv->chipset_rev >= SIS635A_900_REV) ||
2296 (sis_priv->chipset_rev == SIS900B_900_REV) )
2297 outl(PESEL | RND_CNT, ioaddr + cfg);
2299 outl(PESEL, ioaddr + cfg);
2303 * sis900_remove - Remove sis900 device
2304 * @pci_dev: the pci device to be removed
2306 * remove and release SiS900 net device
2309 static void __devexit sis900_remove(struct pci_dev *pci_dev)
2311 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2312 struct sis900_private * sis_priv = net_dev->priv;
2313 struct mii_phy *phy = NULL;
2315 while (sis_priv->first_mii) {
2316 phy = sis_priv->first_mii;
2317 sis_priv->first_mii = phy->next;
2321 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2322 sis_priv->rx_ring_dma);
2323 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2324 sis_priv->tx_ring_dma);
2325 unregister_netdev(net_dev);
2326 free_netdev(net_dev);
2327 pci_release_regions(pci_dev);
2328 pci_set_drvdata(pci_dev, NULL);
2333 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2335 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2336 long ioaddr = net_dev->base_addr;
2338 if(!netif_running(net_dev))
2341 netif_stop_queue(net_dev);
2342 netif_device_detach(net_dev);
2344 /* Stop the chip's Tx and Rx Status Machine */
2345 outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr);
2347 pci_set_power_state(pci_dev, PCI_D3hot);
2348 pci_save_state(pci_dev);
2353 static int sis900_resume(struct pci_dev *pci_dev)
2355 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2356 struct sis900_private *sis_priv = net_dev->priv;
2357 long ioaddr = net_dev->base_addr;
2359 if(!netif_running(net_dev))
2361 pci_restore_state(pci_dev);
2362 pci_set_power_state(pci_dev, PCI_D0);
2364 sis900_init_rxfilter(net_dev);
2366 sis900_init_tx_ring(net_dev);
2367 sis900_init_rx_ring(net_dev);
2369 set_rx_mode(net_dev);
2371 netif_device_attach(net_dev);
2372 netif_start_queue(net_dev);
2374 /* Workaround for EDB */
2375 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2377 /* Enable all known interrupts by setting the interrupt mask. */
2378 outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr);
2379 outl(RxENA | inl(ioaddr + cr), ioaddr + cr);
2380 outl(IE, ioaddr + ier);
2382 sis900_check_mode(net_dev, sis_priv->mii);
2386 #endif /* CONFIG_PM */
2388 static struct pci_driver sis900_pci_driver = {
2389 .name = SIS900_MODULE_NAME,
2390 .id_table = sis900_pci_tbl,
2391 .probe = sis900_probe,
2392 .remove = __devexit_p(sis900_remove),
2394 .suspend = sis900_suspend,
2395 .resume = sis900_resume,
2396 #endif /* CONFIG_PM */
2399 static int __init sis900_init_module(void)
2401 /* when a module, this is printed whether or not devices are found in probe */
2406 return pci_module_init(&sis900_pci_driver);
2409 static void __exit sis900_cleanup_module(void)
2411 pci_unregister_driver(&sis900_pci_driver);
2414 module_init(sis900_init_module);
2415 module_exit(sis900_cleanup_module);