1 /* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux.
2 Copyright 1999 Silicon Integrated System Corporation
3 Revision: 1.08.10 Apr. 2 2006
5 Modified from the driver which is originally written by Donald Becker.
7 This software may be used and distributed according to the terms
8 of the GNU General Public License (GPL), incorporated herein by reference.
9 Drivers based on this skeleton fall under the GPL and must retain
10 the authorship (implicit copyright) notice.
13 SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support,
14 preliminary Rev. 1.0 Jan. 14, 1998
15 SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support,
16 preliminary Rev. 1.0 Nov. 10, 1998
17 SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution,
18 preliminary Rev. 1.0 Jan. 18, 1998
20 Rev 1.08.10 Apr. 2 2006 Daniele Venzano add vlan (jumbo packets) support
21 Rev 1.08.09 Sep. 19 2005 Daniele Venzano add Wake on LAN support
22 Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages
23 Rev 1.08.07 Nov. 2 2003 Daniele Venzano <venza@brownhat.org> add suspend/resume support
24 Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support
25 Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary
26 Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support
27 Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function
28 Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem
29 Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY
30 Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix
31 Rev 1.07.11 Apr. 2 2001 Hui-Fen Hsu updates PCI drivers to use the new pci_set_dma_mask for kernel 2.4.3
32 Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support
33 Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup
34 Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support
35 Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix
36 Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning
37 Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig
38 Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support
39 Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E equalizer workaround rule
40 Rev 1.07.01 Aug. 08 2000 Ollie Lho minor update for SiS 630E and SiS 630E A1
41 Rev 1.07 Mar. 07 2000 Ollie Lho bug fix in Rx buffer ring
42 Rev 1.06.04 Feb. 11 2000 Jeff Garzik <jgarzik@pobox.com> softnet and init for kernel 2.4
43 Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release
44 Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed
45 Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com)
46 Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release
47 Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx
48 Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support
49 Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release
52 #include <linux/module.h>
53 #include <linux/moduleparam.h>
54 #include <linux/kernel.h>
55 #include <linux/sched.h>
56 #include <linux/string.h>
57 #include <linux/timer.h>
58 #include <linux/errno.h>
59 #include <linux/ioport.h>
60 #include <linux/slab.h>
61 #include <linux/interrupt.h>
62 #include <linux/pci.h>
63 #include <linux/netdevice.h>
64 #include <linux/init.h>
65 #include <linux/mii.h>
66 #include <linux/etherdevice.h>
67 #include <linux/skbuff.h>
68 #include <linux/delay.h>
69 #include <linux/ethtool.h>
70 #include <linux/crc32.h>
71 #include <linux/bitops.h>
72 #include <linux/dma-mapping.h>
74 #include <asm/processor.h> /* Processor type for cache alignment. */
77 #include <asm/uaccess.h> /* User space memory access functions */
81 #define SIS900_MODULE_NAME "sis900"
82 #define SIS900_DRV_VERSION "v1.08.10 Apr. 2 2006"
84 static const char version[] __devinitconst =
85 KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
87 static int max_interrupt_work = 40;
88 static int multicast_filter_limit = 128;
90 static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
92 #define SIS900_DEF_MSG \
98 /* Time in jiffies before concluding the transmitter is hung. */
99 #define TX_TIMEOUT (4*HZ)
105 static const char * card_names[] = {
106 "SiS 900 PCI Fast Ethernet",
107 "SiS 7016 PCI Fast Ethernet"
109 static DEFINE_PCI_DEVICE_TABLE(sis900_pci_tbl) = {
110 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900,
111 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900},
112 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016,
113 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016},
116 MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
118 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
120 static const struct mii_chip_info {
129 } mii_chip_table[] = {
130 { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
131 { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
132 { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
133 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
134 { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
135 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
136 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
137 { "ICS LAN PHY", 0x0015, 0xF440, LAN },
138 { "ICS LAN PHY", 0x0143, 0xBC70, LAN },
139 { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
140 { "NS 83847 PHY", 0x2000, 0x5C30, MIX },
141 { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
142 { "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
147 struct mii_phy * next;
155 typedef struct _BufferDesc {
161 struct sis900_private {
162 struct pci_dev * pci_dev;
166 struct mii_phy * mii;
167 struct mii_phy * first_mii; /* record the first mii structure */
168 unsigned int cur_phy;
169 struct mii_if_info mii_info;
171 void __iomem *ioaddr;
173 struct timer_list timer; /* Link status detection timer. */
174 u8 autong_complete; /* 1: auto-negotiate complete */
178 unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */
179 unsigned int cur_tx, dirty_tx;
181 /* The saved address of a sent/receive-in-place packet buffer */
182 struct sk_buff *tx_skbuff[NUM_TX_DESC];
183 struct sk_buff *rx_skbuff[NUM_RX_DESC];
187 dma_addr_t tx_ring_dma;
188 dma_addr_t rx_ring_dma;
190 unsigned int tx_full; /* The Tx queue is full. */
195 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
196 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
197 MODULE_LICENSE("GPL");
199 module_param(multicast_filter_limit, int, 0444);
200 module_param(max_interrupt_work, int, 0444);
201 module_param(sis900_debug, int, 0444);
202 MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
203 MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
204 MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
206 #define sw32(reg, val) iowrite32(val, ioaddr + (reg))
207 #define sw8(reg, val) iowrite8(val, ioaddr + (reg))
208 #define sr32(reg) ioread32(ioaddr + (reg))
209 #define sr16(reg) ioread16(ioaddr + (reg))
211 #ifdef CONFIG_NET_POLL_CONTROLLER
212 static void sis900_poll(struct net_device *dev);
214 static int sis900_open(struct net_device *net_dev);
215 static int sis900_mii_probe (struct net_device * net_dev);
216 static void sis900_init_rxfilter (struct net_device * net_dev);
217 static u16 read_eeprom(void __iomem *ioaddr, int location);
218 static int mdio_read(struct net_device *net_dev, int phy_id, int location);
219 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
220 static void sis900_timer(unsigned long data);
221 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
222 static void sis900_tx_timeout(struct net_device *net_dev);
223 static void sis900_init_tx_ring(struct net_device *net_dev);
224 static void sis900_init_rx_ring(struct net_device *net_dev);
225 static netdev_tx_t sis900_start_xmit(struct sk_buff *skb,
226 struct net_device *net_dev);
227 static int sis900_rx(struct net_device *net_dev);
228 static void sis900_finish_xmit (struct net_device *net_dev);
229 static irqreturn_t sis900_interrupt(int irq, void *dev_instance);
230 static int sis900_close(struct net_device *net_dev);
231 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
232 static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
233 static void set_rx_mode(struct net_device *net_dev);
234 static void sis900_reset(struct net_device *net_dev);
235 static void sis630_set_eq(struct net_device *net_dev, u8 revision);
236 static int sis900_set_config(struct net_device *dev, struct ifmap *map);
237 static u16 sis900_default_phy(struct net_device * net_dev);
238 static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
239 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
240 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
241 static void sis900_set_mode(struct sis900_private *, int speed, int duplex);
242 static const struct ethtool_ops sis900_ethtool_ops;
245 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
246 * @pci_dev: the sis900 pci device
247 * @net_dev: the net device to get address for
249 * Older SiS900 and friends, use EEPROM to store MAC address.
250 * MAC address is read from read_eeprom() into @net_dev->dev_addr and
251 * @net_dev->perm_addr.
254 static int __devinit sis900_get_mac_addr(struct pci_dev * pci_dev, struct net_device *net_dev)
256 struct sis900_private *sis_priv = netdev_priv(net_dev);
257 void __iomem *ioaddr = sis_priv->ioaddr;
261 /* check to see if we have sane EEPROM */
262 signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
263 if (signature == 0xffff || signature == 0x0000) {
264 printk (KERN_WARNING "%s: Error EERPOM read %x\n",
265 pci_name(pci_dev), signature);
269 /* get MAC address from EEPROM */
270 for (i = 0; i < 3; i++)
271 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
273 /* Store MAC Address in perm_addr */
274 memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
280 * sis630e_get_mac_addr - Get MAC address for SiS630E model
281 * @pci_dev: the sis900 pci device
282 * @net_dev: the net device to get address for
284 * SiS630E model, use APC CMOS RAM to store MAC address.
285 * APC CMOS RAM is accessed through ISA bridge.
286 * MAC address is read into @net_dev->dev_addr and
287 * @net_dev->perm_addr.
290 static int __devinit sis630e_get_mac_addr(struct pci_dev * pci_dev,
291 struct net_device *net_dev)
293 struct pci_dev *isa_bridge = NULL;
297 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
299 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
301 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
305 pci_read_config_byte(isa_bridge, 0x48, ®);
306 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
308 for (i = 0; i < 6; i++) {
309 outb(0x09 + i, 0x70);
310 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
313 /* Store MAC Address in perm_addr */
314 memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
316 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
317 pci_dev_put(isa_bridge);
324 * sis635_get_mac_addr - Get MAC address for SIS635 model
325 * @pci_dev: the sis900 pci device
326 * @net_dev: the net device to get address for
328 * SiS635 model, set MAC Reload Bit to load Mac address from APC
329 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
330 * @net_dev->dev_addr and @net_dev->perm_addr.
333 static int __devinit sis635_get_mac_addr(struct pci_dev * pci_dev,
334 struct net_device *net_dev)
336 struct sis900_private *sis_priv = netdev_priv(net_dev);
337 void __iomem *ioaddr = sis_priv->ioaddr;
341 rfcrSave = sr32(rfcr);
343 sw32(cr, rfcrSave | RELOAD);
346 /* disable packet filtering before setting filter */
347 sw32(rfcr, rfcrSave & ~RFEN);
349 /* load MAC addr to filter data register */
350 for (i = 0 ; i < 3 ; i++) {
351 sw32(rfcr, (i << RFADDR_shift));
352 *( ((u16 *)net_dev->dev_addr) + i) = sr16(rfdr);
355 /* Store MAC Address in perm_addr */
356 memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
358 /* enable packet filtering */
359 sw32(rfcr, rfcrSave | RFEN);
365 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
366 * @pci_dev: the sis900 pci device
367 * @net_dev: the net device to get address for
369 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
371 * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first
372 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access
373 * by LAN, otherwise is not. After MAC address is read from EEPROM, send
374 * EEDONE signal to refuse EEPROM access by LAN.
375 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
376 * The signature field in SiS962 or SiS963 spec is meaningless.
377 * MAC address is read into @net_dev->dev_addr and @net_dev->perm_addr.
380 static int __devinit sis96x_get_mac_addr(struct pci_dev * pci_dev,
381 struct net_device *net_dev)
383 struct sis900_private *sis_priv = netdev_priv(net_dev);
384 void __iomem *ioaddr = sis_priv->ioaddr;
388 for (wait = 0; wait < 2000; wait++) {
389 if (sr32(mear) & EEGNT) {
390 u16 *mac = (u16 *)net_dev->dev_addr;
393 /* get MAC address from EEPROM */
394 for (i = 0; i < 3; i++)
395 mac[i] = read_eeprom(ioaddr, i + EEPROMMACAddr);
397 /* Store MAC Address in perm_addr */
398 memcpy(net_dev->perm_addr, net_dev->dev_addr, ETH_ALEN);
409 static const struct net_device_ops sis900_netdev_ops = {
410 .ndo_open = sis900_open,
411 .ndo_stop = sis900_close,
412 .ndo_start_xmit = sis900_start_xmit,
413 .ndo_set_config = sis900_set_config,
414 .ndo_set_rx_mode = set_rx_mode,
415 .ndo_change_mtu = eth_change_mtu,
416 .ndo_validate_addr = eth_validate_addr,
417 .ndo_set_mac_address = eth_mac_addr,
418 .ndo_do_ioctl = mii_ioctl,
419 .ndo_tx_timeout = sis900_tx_timeout,
420 #ifdef CONFIG_NET_POLL_CONTROLLER
421 .ndo_poll_controller = sis900_poll,
426 * sis900_probe - Probe for sis900 device
427 * @pci_dev: the sis900 pci device
428 * @pci_id: the pci device ID
430 * Check and probe sis900 net device for @pci_dev.
431 * Get mac address according to the chip revision,
432 * and assign SiS900-specific entries in the device structure.
433 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
436 static int __devinit sis900_probe(struct pci_dev *pci_dev,
437 const struct pci_device_id *pci_id)
439 struct sis900_private *sis_priv;
440 struct net_device *net_dev;
444 void __iomem *ioaddr;
446 const char *card_name = card_names[pci_id->driver_data];
447 const char *dev_name = pci_name(pci_dev);
449 /* when built into the kernel, we only print version if device is found */
451 static int printed_version;
452 if (!printed_version++)
456 /* setup various bits in PCI command register */
457 ret = pci_enable_device(pci_dev);
460 i = pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32));
462 printk(KERN_ERR "sis900.c: architecture does not support "
463 "32bit PCI busmaster DMA\n");
467 pci_set_master(pci_dev);
469 net_dev = alloc_etherdev(sizeof(struct sis900_private));
472 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
474 /* We do a request_region() to register /proc/ioports info. */
475 ret = pci_request_regions(pci_dev, "sis900");
480 ioaddr = pci_iomap(pci_dev, 0, 0);
482 goto err_out_cleardev;
484 sis_priv = netdev_priv(net_dev);
485 sis_priv->ioaddr = ioaddr;
486 sis_priv->pci_dev = pci_dev;
487 spin_lock_init(&sis_priv->lock);
489 pci_set_drvdata(pci_dev, net_dev);
491 ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma);
496 sis_priv->tx_ring = ring_space;
497 sis_priv->tx_ring_dma = ring_dma;
499 ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma);
504 sis_priv->rx_ring = ring_space;
505 sis_priv->rx_ring_dma = ring_dma;
507 /* The SiS900-specific entries in the device structure. */
508 net_dev->netdev_ops = &sis900_netdev_ops;
509 net_dev->watchdog_timeo = TX_TIMEOUT;
510 net_dev->ethtool_ops = &sis900_ethtool_ops;
512 if (sis900_debug > 0)
513 sis_priv->msg_enable = sis900_debug;
515 sis_priv->msg_enable = SIS900_DEF_MSG;
517 sis_priv->mii_info.dev = net_dev;
518 sis_priv->mii_info.mdio_read = mdio_read;
519 sis_priv->mii_info.mdio_write = mdio_write;
520 sis_priv->mii_info.phy_id_mask = 0x1f;
521 sis_priv->mii_info.reg_num_mask = 0x1f;
523 /* Get Mac address according to the chip revision */
524 sis_priv->chipset_rev = pci_dev->revision;
525 if(netif_msg_probe(sis_priv))
526 printk(KERN_DEBUG "%s: detected revision %2.2x, "
527 "trying to get MAC address...\n",
528 dev_name, sis_priv->chipset_rev);
531 if (sis_priv->chipset_rev == SIS630E_900_REV)
532 ret = sis630e_get_mac_addr(pci_dev, net_dev);
533 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
534 ret = sis635_get_mac_addr(pci_dev, net_dev);
535 else if (sis_priv->chipset_rev == SIS96x_900_REV)
536 ret = sis96x_get_mac_addr(pci_dev, net_dev);
538 ret = sis900_get_mac_addr(pci_dev, net_dev);
540 if (!ret || !is_valid_ether_addr(net_dev->dev_addr)) {
541 eth_hw_addr_random(net_dev);
542 printk(KERN_WARNING "%s: Unreadable or invalid MAC address,"
543 "using random generated one\n", dev_name);
546 /* 630ET : set the mii access mode as software-mode */
547 if (sis_priv->chipset_rev == SIS630ET_900_REV)
548 sw32(cr, ACCESSMODE | sr32(cr));
550 /* probe for mii transceiver */
551 if (sis900_mii_probe(net_dev) == 0) {
552 printk(KERN_WARNING "%s: Error probing MII device.\n",
558 /* save our host bridge revision */
559 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
561 sis_priv->host_bridge_rev = dev->revision;
565 ret = register_netdev(net_dev);
569 /* print some information about our NIC */
570 printk(KERN_INFO "%s: %s at 0x%p, IRQ %d, %pM\n",
571 net_dev->name, card_name, ioaddr, pci_dev->irq,
574 /* Detect Wake on Lan support */
575 ret = (sr32(CFGPMC) & PMESP) >> 27;
576 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
577 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
582 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
583 sis_priv->rx_ring_dma);
585 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
586 sis_priv->tx_ring_dma);
588 pci_iounmap(pci_dev, ioaddr);
590 pci_set_drvdata(pci_dev, NULL);
591 pci_release_regions(pci_dev);
593 free_netdev(net_dev);
598 * sis900_mii_probe - Probe MII PHY for sis900
599 * @net_dev: the net device to probe for
601 * Search for total of 32 possible mii phy addresses.
602 * Identify and set current phy if found one,
603 * return error if it failed to found.
606 static int __devinit sis900_mii_probe(struct net_device * net_dev)
608 struct sis900_private *sis_priv = netdev_priv(net_dev);
609 const char *dev_name = pci_name(sis_priv->pci_dev);
610 u16 poll_bit = MII_STAT_LINK, status = 0;
611 unsigned long timeout = jiffies + 5 * HZ;
614 sis_priv->mii = NULL;
616 /* search for total of 32 possible mii phy addresses */
617 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
618 struct mii_phy * mii_phy = NULL;
623 for(i = 0; i < 2; i++)
624 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
626 if (mii_status == 0xffff || mii_status == 0x0000) {
627 if (netif_msg_probe(sis_priv))
628 printk(KERN_DEBUG "%s: MII at address %d"
634 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
635 mii_phy = sis_priv->first_mii;
639 mii_phy = mii_phy->next;
645 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
646 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
647 mii_phy->phy_addr = phy_addr;
648 mii_phy->status = mii_status;
649 mii_phy->next = sis_priv->mii;
650 sis_priv->mii = mii_phy;
651 sis_priv->first_mii = mii_phy;
653 for (i = 0; mii_chip_table[i].phy_id1; i++)
654 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
655 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
656 mii_phy->phy_types = mii_chip_table[i].phy_types;
657 if (mii_chip_table[i].phy_types == MIX)
659 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
660 printk(KERN_INFO "%s: %s transceiver found "
663 mii_chip_table[i].name,
668 if( !mii_chip_table[i].phy_id1 ) {
669 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
671 mii_phy->phy_types = UNKNOWN;
675 if (sis_priv->mii == NULL) {
676 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
680 /* select default PHY for mac */
681 sis_priv->mii = NULL;
682 sis900_default_phy( net_dev );
684 /* Reset phy if default phy is internal sis900 */
685 if ((sis_priv->mii->phy_id0 == 0x001D) &&
686 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
687 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
689 /* workaround for ICS1893 PHY */
690 if ((sis_priv->mii->phy_id0 == 0x0015) &&
691 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
692 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
694 if(status & MII_STAT_LINK){
698 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
699 if (time_after_eq(jiffies, timeout)) {
700 printk(KERN_WARNING "%s: reset phy and link down now\n",
707 if (sis_priv->chipset_rev == SIS630E_900_REV) {
708 /* SiS 630E has some bugs on default value of PHY registers */
709 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
710 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
711 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
712 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
713 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
716 if (sis_priv->mii->status & MII_STAT_LINK)
717 netif_carrier_on(net_dev);
719 netif_carrier_off(net_dev);
725 * sis900_default_phy - Select default PHY for sis900 mac.
726 * @net_dev: the net device to probe for
728 * Select first detected PHY with link as default.
729 * If no one is link on, select PHY whose types is HOME as default.
730 * If HOME doesn't exist, select LAN.
733 static u16 sis900_default_phy(struct net_device * net_dev)
735 struct sis900_private *sis_priv = netdev_priv(net_dev);
736 struct mii_phy *phy = NULL, *phy_home = NULL,
737 *default_phy = NULL, *phy_lan = NULL;
740 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
741 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
742 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
744 /* Link ON & Not select default PHY & not ghost PHY */
745 if ((status & MII_STAT_LINK) && !default_phy &&
746 (phy->phy_types != UNKNOWN))
749 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
750 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
751 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
752 if (phy->phy_types == HOME)
754 else if(phy->phy_types == LAN)
759 if (!default_phy && phy_home)
760 default_phy = phy_home;
761 else if (!default_phy && phy_lan)
762 default_phy = phy_lan;
763 else if (!default_phy)
764 default_phy = sis_priv->first_mii;
766 if (sis_priv->mii != default_phy) {
767 sis_priv->mii = default_phy;
768 sis_priv->cur_phy = default_phy->phy_addr;
769 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
770 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
773 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
775 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
776 status &= (~MII_CNTL_ISOLATE);
778 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
779 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
780 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
787 * sis900_set_capability - set the media capability of network adapter.
788 * @net_dev : the net device to probe for
791 * Set the media capability of network adapter according to
792 * mii status register. It's necessary before auto-negotiate.
795 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
800 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
801 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
803 cap = MII_NWAY_CSMA_CD |
804 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
805 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
806 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
807 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
809 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
813 /* Delay between EEPROM clock transitions. */
814 #define eeprom_delay() sr32(mear)
817 * read_eeprom - Read Serial EEPROM
818 * @ioaddr: base i/o address
819 * @location: the EEPROM location to read
821 * Read Serial EEPROM through EEPROM Access Register.
822 * Note that location is in word (16 bits) unit
825 static u16 __devinit read_eeprom(void __iomem *ioaddr, int location)
827 u32 read_cmd = location | EEread;
836 /* Shift the read command (9) bits out. */
837 for (i = 8; i >= 0; i--) {
838 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
842 sw32(mear, dataval | EECLK);
848 /* read the 16-bits data in */
849 for (i = 16; i > 0; i--) {
852 sw32(mear, EECS | EECLK);
854 retval = (retval << 1) | ((sr32(mear) & EEDO) ? 1 : 0);
858 /* Terminate the EEPROM access. */
865 /* Read and write the MII management registers using software-generated
866 serial MDIO protocol. Note that the command bits and data bits are
867 send out separately */
868 #define mdio_delay() sr32(mear)
870 static void mdio_idle(struct sis900_private *sp)
872 void __iomem *ioaddr = sp->ioaddr;
874 sw32(mear, MDIO | MDDIR);
876 sw32(mear, MDIO | MDDIR | MDC);
879 /* Synchronize the MII management interface by shifting 32 one bits out. */
880 static void mdio_reset(struct sis900_private *sp)
882 void __iomem *ioaddr = sp->ioaddr;
885 for (i = 31; i >= 0; i--) {
886 sw32(mear, MDDIR | MDIO);
888 sw32(mear, MDDIR | MDIO | MDC);
894 * mdio_read - read MII PHY register
895 * @net_dev: the net device to read
896 * @phy_id: the phy address to read
897 * @location: the phy regiester id to read
899 * Read MII registers through MDIO and MDC
900 * using MDIO management frame structure and protocol(defined by ISO/IEC).
901 * Please see SiS7014 or ICS spec
904 static int mdio_read(struct net_device *net_dev, int phy_id, int location)
906 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
907 struct sis900_private *sp = netdev_priv(net_dev);
908 void __iomem *ioaddr = sp->ioaddr;
915 for (i = 15; i >= 0; i--) {
916 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
920 sw32(mear, dataval | MDC);
924 /* Read the 16 data bits. */
925 for (i = 16; i > 0; i--) {
928 retval = (retval << 1) | ((sr32(mear) & MDIO) ? 1 : 0);
938 * mdio_write - write MII PHY register
939 * @net_dev: the net device to write
940 * @phy_id: the phy address to write
941 * @location: the phy regiester id to write
942 * @value: the register value to write with
944 * Write MII registers with @value through MDIO and MDC
945 * using MDIO management frame structure and protocol(defined by ISO/IEC)
946 * please see SiS7014 or ICS spec
949 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
952 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
953 struct sis900_private *sp = netdev_priv(net_dev);
954 void __iomem *ioaddr = sp->ioaddr;
960 /* Shift the command bits out. */
961 for (i = 15; i >= 0; i--) {
962 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
966 sw8(mear, dataval | MDC);
971 /* Shift the value bits out. */
972 for (i = 15; i >= 0; i--) {
973 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
977 sw32(mear, dataval | MDC);
982 /* Clear out extra bits. */
983 for (i = 2; i > 0; i--) {
994 * sis900_reset_phy - reset sis900 mii phy.
995 * @net_dev: the net device to write
996 * @phy_addr: default phy address
998 * Some specific phy can't work properly without reset.
999 * This function will be called during initialization and
1000 * link status change from ON to DOWN.
1003 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
1008 for (i = 0; i < 2; i++)
1009 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1011 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
1016 #ifdef CONFIG_NET_POLL_CONTROLLER
1018 * Polling 'interrupt' - used by things like netconsole to send skbs
1019 * without having to re-enable interrupts. It's not called while
1020 * the interrupt routine is executing.
1022 static void sis900_poll(struct net_device *dev)
1024 struct sis900_private *sp = netdev_priv(dev);
1025 const int irq = sp->pci_dev->irq;
1028 sis900_interrupt(irq, dev);
1034 * sis900_open - open sis900 device
1035 * @net_dev: the net device to open
1037 * Do some initialization and start net interface.
1038 * enable interrupts and set sis900 timer.
1042 sis900_open(struct net_device *net_dev)
1044 struct sis900_private *sis_priv = netdev_priv(net_dev);
1045 void __iomem *ioaddr = sis_priv->ioaddr;
1048 /* Soft reset the chip. */
1049 sis900_reset(net_dev);
1051 /* Equalizer workaround Rule */
1052 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1054 ret = request_irq(sis_priv->pci_dev->irq, sis900_interrupt, IRQF_SHARED,
1055 net_dev->name, net_dev);
1059 sis900_init_rxfilter(net_dev);
1061 sis900_init_tx_ring(net_dev);
1062 sis900_init_rx_ring(net_dev);
1064 set_rx_mode(net_dev);
1066 netif_start_queue(net_dev);
1068 /* Workaround for EDB */
1069 sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1071 /* Enable all known interrupts by setting the interrupt mask. */
1072 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE);
1073 sw32(cr, RxENA | sr32(cr));
1076 sis900_check_mode(net_dev, sis_priv->mii);
1078 /* Set the timer to switch to check for link beat and perhaps switch
1079 to an alternate media type. */
1080 init_timer(&sis_priv->timer);
1081 sis_priv->timer.expires = jiffies + HZ;
1082 sis_priv->timer.data = (unsigned long)net_dev;
1083 sis_priv->timer.function = sis900_timer;
1084 add_timer(&sis_priv->timer);
1090 * sis900_init_rxfilter - Initialize the Rx filter
1091 * @net_dev: the net device to initialize for
1093 * Set receive filter address to our MAC address
1094 * and enable packet filtering.
1098 sis900_init_rxfilter (struct net_device * net_dev)
1100 struct sis900_private *sis_priv = netdev_priv(net_dev);
1101 void __iomem *ioaddr = sis_priv->ioaddr;
1105 rfcrSave = sr32(rfcr);
1107 /* disable packet filtering before setting filter */
1108 sw32(rfcr, rfcrSave & ~RFEN);
1110 /* load MAC addr to filter data register */
1111 for (i = 0 ; i < 3 ; i++) {
1112 u32 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1114 sw32(rfcr, i << RFADDR_shift);
1117 if (netif_msg_hw(sis_priv)) {
1118 printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n",
1119 net_dev->name, i, sr32(rfdr));
1123 /* enable packet filtering */
1124 sw32(rfcr, rfcrSave | RFEN);
1128 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1129 * @net_dev: the net device to initialize for
1131 * Initialize the Tx descriptor ring,
1135 sis900_init_tx_ring(struct net_device *net_dev)
1137 struct sis900_private *sis_priv = netdev_priv(net_dev);
1138 void __iomem *ioaddr = sis_priv->ioaddr;
1141 sis_priv->tx_full = 0;
1142 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1144 for (i = 0; i < NUM_TX_DESC; i++) {
1145 sis_priv->tx_skbuff[i] = NULL;
1147 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1148 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1149 sis_priv->tx_ring[i].cmdsts = 0;
1150 sis_priv->tx_ring[i].bufptr = 0;
1153 /* load Transmit Descriptor Register */
1154 sw32(txdp, sis_priv->tx_ring_dma);
1155 if (netif_msg_hw(sis_priv))
1156 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1157 net_dev->name, sr32(txdp));
1161 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1162 * @net_dev: the net device to initialize for
1164 * Initialize the Rx descriptor ring,
1165 * and pre-allocate recevie buffers (socket buffer)
1169 sis900_init_rx_ring(struct net_device *net_dev)
1171 struct sis900_private *sis_priv = netdev_priv(net_dev);
1172 void __iomem *ioaddr = sis_priv->ioaddr;
1175 sis_priv->cur_rx = 0;
1176 sis_priv->dirty_rx = 0;
1178 /* init RX descriptor */
1179 for (i = 0; i < NUM_RX_DESC; i++) {
1180 sis_priv->rx_skbuff[i] = NULL;
1182 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1183 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1184 sis_priv->rx_ring[i].cmdsts = 0;
1185 sis_priv->rx_ring[i].bufptr = 0;
1188 /* allocate sock buffers */
1189 for (i = 0; i < NUM_RX_DESC; i++) {
1190 struct sk_buff *skb;
1192 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1193 /* not enough memory for skbuff, this makes a "hole"
1194 on the buffer ring, it is not clear how the
1195 hardware will react to this kind of degenerated
1199 sis_priv->rx_skbuff[i] = skb;
1200 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1201 sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev,
1202 skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1204 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1206 /* load Receive Descriptor Register */
1207 sw32(rxdp, sis_priv->rx_ring_dma);
1208 if (netif_msg_hw(sis_priv))
1209 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1210 net_dev->name, sr32(rxdp));
1214 * sis630_set_eq - set phy equalizer value for 630 LAN
1215 * @net_dev: the net device to set equalizer value
1216 * @revision: 630 LAN revision number
1218 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1219 * PHY register 14h(Test)
1220 * Bit 14: 0 -- Automatically detect (default)
1221 * 1 -- Manually set Equalizer filter
1222 * Bit 13: 0 -- (Default)
1223 * 1 -- Speed up convergence of equalizer setting
1224 * Bit 9 : 0 -- (Default)
1225 * 1 -- Disable Baseline Wander
1226 * Bit 3~7 -- Equalizer filter setting
1227 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1228 * Then calculate equalizer value
1229 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1230 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1231 * Calculate Equalizer value:
1232 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-detect proper equalizer value.
1233 * When the equalizer is stable, this value is not a fixed value. It will be within
1234 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1235 * 0 <= max <= 4 --> set equalizer to max
1236 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1237 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1240 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1242 struct sis900_private *sis_priv = netdev_priv(net_dev);
1243 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1246 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1247 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1250 if (netif_carrier_ok(net_dev)) {
1251 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1252 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1253 (0x2200 | reg14h) & 0xBFFF);
1254 for (i=0; i < maxcount; i++) {
1255 eq_value = (0x00F8 & mdio_read(net_dev,
1256 sis_priv->cur_phy, MII_RESV)) >> 3;
1258 max_value=min_value=eq_value;
1259 max_value = (eq_value > max_value) ?
1260 eq_value : max_value;
1261 min_value = (eq_value < min_value) ?
1262 eq_value : min_value;
1264 /* 630E rule to determine the equalizer value */
1265 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1266 revision == SIS630ET_900_REV) {
1268 eq_value = max_value;
1269 else if (max_value >= 5 && max_value < 15)
1270 eq_value = (max_value == min_value) ?
1271 max_value+2 : max_value+1;
1272 else if (max_value >= 15)
1273 eq_value=(max_value == min_value) ?
1274 max_value+6 : max_value+5;
1276 /* 630B0&B1 rule to determine the equalizer value */
1277 if (revision == SIS630A_900_REV &&
1278 (sis_priv->host_bridge_rev == SIS630B0 ||
1279 sis_priv->host_bridge_rev == SIS630B1)) {
1283 eq_value = (max_value + min_value + 1)/2;
1285 /* write equalizer value and setting */
1286 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1287 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1288 reg14h = (reg14h | 0x6000) & 0xFDFF;
1289 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1291 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1292 if (revision == SIS630A_900_REV &&
1293 (sis_priv->host_bridge_rev == SIS630B0 ||
1294 sis_priv->host_bridge_rev == SIS630B1))
1295 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1296 (reg14h | 0x2200) & 0xBFFF);
1298 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1299 (reg14h | 0x2000) & 0xBFFF);
1304 * sis900_timer - sis900 timer routine
1305 * @data: pointer to sis900 net device
1307 * On each timer ticks we check two things,
1308 * link status (ON/OFF) and link mode (10/100/Full/Half)
1311 static void sis900_timer(unsigned long data)
1313 struct net_device *net_dev = (struct net_device *)data;
1314 struct sis900_private *sis_priv = netdev_priv(net_dev);
1315 struct mii_phy *mii_phy = sis_priv->mii;
1316 static const int next_tick = 5*HZ;
1319 if (!sis_priv->autong_complete){
1320 int uninitialized_var(speed), duplex = 0;
1322 sis900_read_mode(net_dev, &speed, &duplex);
1324 sis900_set_mode(sis_priv, speed, duplex);
1325 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1326 netif_start_queue(net_dev);
1329 sis_priv->timer.expires = jiffies + HZ;
1330 add_timer(&sis_priv->timer);
1334 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1335 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1337 /* Link OFF -> ON */
1338 if (!netif_carrier_ok(net_dev)) {
1340 /* Search for new PHY */
1341 status = sis900_default_phy(net_dev);
1342 mii_phy = sis_priv->mii;
1344 if (status & MII_STAT_LINK){
1345 sis900_check_mode(net_dev, mii_phy);
1346 netif_carrier_on(net_dev);
1349 /* Link ON -> OFF */
1350 if (!(status & MII_STAT_LINK)){
1351 netif_carrier_off(net_dev);
1352 if(netif_msg_link(sis_priv))
1353 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1355 /* Change mode issue */
1356 if ((mii_phy->phy_id0 == 0x001D) &&
1357 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1358 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1360 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1366 sis_priv->timer.expires = jiffies + next_tick;
1367 add_timer(&sis_priv->timer);
1371 * sis900_check_mode - check the media mode for sis900
1372 * @net_dev: the net device to be checked
1373 * @mii_phy: the mii phy
1375 * Older driver gets the media mode from mii status output
1376 * register. Now we set our media capability and auto-negotiate
1377 * to get the upper bound of speed and duplex between two ends.
1378 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1379 * and autong_complete should be set to 1.
1382 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1384 struct sis900_private *sis_priv = netdev_priv(net_dev);
1385 void __iomem *ioaddr = sis_priv->ioaddr;
1388 if (mii_phy->phy_types == LAN) {
1389 sw32(cfg, ~EXD & sr32(cfg));
1390 sis900_set_capability(net_dev , mii_phy);
1391 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1393 sw32(cfg, EXD | sr32(cfg));
1394 speed = HW_SPEED_HOME;
1395 duplex = FDX_CAPABLE_HALF_SELECTED;
1396 sis900_set_mode(sis_priv, speed, duplex);
1397 sis_priv->autong_complete = 1;
1402 * sis900_set_mode - Set the media mode of mac register.
1403 * @sp: the device private data
1404 * @speed : the transmit speed to be determined
1405 * @duplex: the duplex mode to be determined
1407 * Set the media mode of mac register txcfg/rxcfg according to
1408 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1409 * bus is used instead of PCI bus. When this bit is set 1, the
1410 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1414 static void sis900_set_mode(struct sis900_private *sp, int speed, int duplex)
1416 void __iomem *ioaddr = sp->ioaddr;
1417 u32 tx_flags = 0, rx_flags = 0;
1419 if (sr32( cfg) & EDB_MASTER_EN) {
1420 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1421 (TX_FILL_THRESH << TxFILLT_shift);
1422 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1424 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1425 (TX_FILL_THRESH << TxFILLT_shift);
1426 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1429 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1430 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1431 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1433 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1434 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1437 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1438 tx_flags |= (TxCSI | TxHBI);
1442 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1443 /* Can accept Jumbo packet */
1447 sw32(txcfg, tx_flags);
1448 sw32(rxcfg, rx_flags);
1452 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1453 * @net_dev: the net device to read mode for
1454 * @phy_addr: mii phy address
1456 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1457 * autong_complete should be set to 0 when starting auto-negotiation.
1458 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1459 * sis900_timer will wait for link on again if autong_complete = 0.
1462 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1464 struct sis900_private *sis_priv = netdev_priv(net_dev);
1468 for (i = 0; i < 2; i++)
1469 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1471 if (!(status & MII_STAT_LINK)){
1472 if(netif_msg_link(sis_priv))
1473 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1474 sis_priv->autong_complete = 1;
1475 netif_carrier_off(net_dev);
1479 /* (Re)start AutoNegotiate */
1480 mdio_write(net_dev, phy_addr, MII_CONTROL,
1481 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1482 sis_priv->autong_complete = 0;
1487 * sis900_read_mode - read media mode for sis900 internal phy
1488 * @net_dev: the net device to read mode for
1489 * @speed : the transmit speed to be determined
1490 * @duplex : the duplex mode to be determined
1492 * The capability of remote end will be put in mii register autorec
1493 * after auto-negotiation. Use AND operation to get the upper bound
1494 * of speed and duplex between two ends.
1497 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1499 struct sis900_private *sis_priv = netdev_priv(net_dev);
1500 struct mii_phy *phy = sis_priv->mii;
1501 int phy_addr = sis_priv->cur_phy;
1503 u16 autoadv, autorec;
1506 for (i = 0; i < 2; i++)
1507 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1509 if (!(status & MII_STAT_LINK))
1512 /* AutoNegotiate completed */
1513 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1514 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1515 status = autoadv & autorec;
1517 *speed = HW_SPEED_10_MBPS;
1518 *duplex = FDX_CAPABLE_HALF_SELECTED;
1520 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1521 *speed = HW_SPEED_100_MBPS;
1522 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1523 *duplex = FDX_CAPABLE_FULL_SELECTED;
1525 sis_priv->autong_complete = 1;
1527 /* Workaround for Realtek RTL8201 PHY issue */
1528 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1529 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1530 *duplex = FDX_CAPABLE_FULL_SELECTED;
1531 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1532 *speed = HW_SPEED_100_MBPS;
1535 if(netif_msg_link(sis_priv))
1536 printk(KERN_INFO "%s: Media Link On %s %s-duplex\n",
1538 *speed == HW_SPEED_100_MBPS ?
1539 "100mbps" : "10mbps",
1540 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1545 * sis900_tx_timeout - sis900 transmit timeout routine
1546 * @net_dev: the net device to transmit
1548 * print transmit timeout status
1549 * disable interrupts and do some tasks
1552 static void sis900_tx_timeout(struct net_device *net_dev)
1554 struct sis900_private *sis_priv = netdev_priv(net_dev);
1555 void __iomem *ioaddr = sis_priv->ioaddr;
1556 unsigned long flags;
1559 if (netif_msg_tx_err(sis_priv)) {
1560 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x\n",
1561 net_dev->name, sr32(cr), sr32(isr));
1564 /* Disable interrupts by clearing the interrupt mask. */
1567 /* use spinlock to prevent interrupt handler accessing buffer ring */
1568 spin_lock_irqsave(&sis_priv->lock, flags);
1570 /* discard unsent packets */
1571 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1572 for (i = 0; i < NUM_TX_DESC; i++) {
1573 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1576 pci_unmap_single(sis_priv->pci_dev,
1577 sis_priv->tx_ring[i].bufptr, skb->len,
1579 dev_kfree_skb_irq(skb);
1580 sis_priv->tx_skbuff[i] = NULL;
1581 sis_priv->tx_ring[i].cmdsts = 0;
1582 sis_priv->tx_ring[i].bufptr = 0;
1583 net_dev->stats.tx_dropped++;
1586 sis_priv->tx_full = 0;
1587 netif_wake_queue(net_dev);
1589 spin_unlock_irqrestore(&sis_priv->lock, flags);
1591 net_dev->trans_start = jiffies; /* prevent tx timeout */
1593 /* load Transmit Descriptor Register */
1594 sw32(txdp, sis_priv->tx_ring_dma);
1596 /* Enable all known interrupts by setting the interrupt mask. */
1597 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE);
1601 * sis900_start_xmit - sis900 start transmit routine
1602 * @skb: socket buffer pointer to put the data being transmitted
1603 * @net_dev: the net device to transmit with
1605 * Set the transmit buffer descriptor,
1606 * and write TxENA to enable transmit state machine.
1607 * tell upper layer if the buffer is full
1611 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1613 struct sis900_private *sis_priv = netdev_priv(net_dev);
1614 void __iomem *ioaddr = sis_priv->ioaddr;
1616 unsigned long flags;
1617 unsigned int index_cur_tx, index_dirty_tx;
1618 unsigned int count_dirty_tx;
1620 /* Don't transmit data before the complete of auto-negotiation */
1621 if(!sis_priv->autong_complete){
1622 netif_stop_queue(net_dev);
1623 return NETDEV_TX_BUSY;
1626 spin_lock_irqsave(&sis_priv->lock, flags);
1628 /* Calculate the next Tx descriptor entry. */
1629 entry = sis_priv->cur_tx % NUM_TX_DESC;
1630 sis_priv->tx_skbuff[entry] = skb;
1632 /* set the transmit buffer descriptor and enable Transmit State Machine */
1633 sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev,
1634 skb->data, skb->len, PCI_DMA_TODEVICE);
1635 sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len);
1636 sw32(cr, TxENA | sr32(cr));
1638 sis_priv->cur_tx ++;
1639 index_cur_tx = sis_priv->cur_tx;
1640 index_dirty_tx = sis_priv->dirty_tx;
1642 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1645 if (index_cur_tx == index_dirty_tx) {
1646 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1647 sis_priv->tx_full = 1;
1648 netif_stop_queue(net_dev);
1649 } else if (count_dirty_tx < NUM_TX_DESC) {
1650 /* Typical path, tell upper layer that more transmission is possible */
1651 netif_start_queue(net_dev);
1653 /* buffer full, tell upper layer no more transmission */
1654 sis_priv->tx_full = 1;
1655 netif_stop_queue(net_dev);
1658 spin_unlock_irqrestore(&sis_priv->lock, flags);
1660 if (netif_msg_tx_queued(sis_priv))
1661 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1663 net_dev->name, skb->data, (int)skb->len, entry);
1665 return NETDEV_TX_OK;
1669 * sis900_interrupt - sis900 interrupt handler
1670 * @irq: the irq number
1671 * @dev_instance: the client data object
1673 * The interrupt handler does all of the Rx thread work,
1674 * and cleans up after the Tx thread
1677 static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
1679 struct net_device *net_dev = dev_instance;
1680 struct sis900_private *sis_priv = netdev_priv(net_dev);
1681 int boguscnt = max_interrupt_work;
1682 void __iomem *ioaddr = sis_priv->ioaddr;
1684 unsigned int handled = 0;
1686 spin_lock (&sis_priv->lock);
1691 if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0)
1692 /* nothing intresting happened */
1696 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1697 if (status & (RxORN | RxERR | RxOK))
1701 if (status & (TxURN | TxERR | TxIDLE))
1703 sis900_finish_xmit(net_dev);
1705 /* something strange happened !!! */
1706 if (status & HIBERR) {
1707 if(netif_msg_intr(sis_priv))
1708 printk(KERN_INFO "%s: Abnormal interrupt, "
1709 "status %#8.8x.\n", net_dev->name, status);
1712 if (--boguscnt < 0) {
1713 if(netif_msg_intr(sis_priv))
1714 printk(KERN_INFO "%s: Too much work at interrupt, "
1715 "interrupt status = %#8.8x.\n",
1716 net_dev->name, status);
1721 if(netif_msg_intr(sis_priv))
1722 printk(KERN_DEBUG "%s: exiting interrupt, "
1723 "interrupt status = 0x%#8.8x.\n",
1724 net_dev->name, sr32(isr));
1726 spin_unlock (&sis_priv->lock);
1727 return IRQ_RETVAL(handled);
1731 * sis900_rx - sis900 receive routine
1732 * @net_dev: the net device which receives data
1734 * Process receive interrupt events,
1735 * put buffer to higher layer and refill buffer pool
1736 * Note: This function is called by interrupt handler,
1737 * don't do "too much" work here
1740 static int sis900_rx(struct net_device *net_dev)
1742 struct sis900_private *sis_priv = netdev_priv(net_dev);
1743 void __iomem *ioaddr = sis_priv->ioaddr;
1744 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1745 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1748 if (netif_msg_rx_status(sis_priv))
1749 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1751 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1752 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
1754 while (rx_status & OWN) {
1755 unsigned int rx_size;
1756 unsigned int data_size;
1758 if (--rx_work_limit < 0)
1761 data_size = rx_status & DSIZE;
1762 rx_size = data_size - CRC_SIZE;
1764 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1765 /* ``TOOLONG'' flag means jumbo packet received. */
1766 if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
1767 rx_status &= (~ ((unsigned int)TOOLONG));
1770 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1771 /* corrupted packet received */
1772 if (netif_msg_rx_err(sis_priv))
1773 printk(KERN_DEBUG "%s: Corrupted packet "
1774 "received, buffer status = 0x%8.8x/%d.\n",
1775 net_dev->name, rx_status, data_size);
1776 net_dev->stats.rx_errors++;
1777 if (rx_status & OVERRUN)
1778 net_dev->stats.rx_over_errors++;
1779 if (rx_status & (TOOLONG|RUNT))
1780 net_dev->stats.rx_length_errors++;
1781 if (rx_status & (RXISERR | FAERR))
1782 net_dev->stats.rx_frame_errors++;
1783 if (rx_status & CRCERR)
1784 net_dev->stats.rx_crc_errors++;
1785 /* reset buffer descriptor state */
1786 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1788 struct sk_buff * skb;
1789 struct sk_buff * rx_skb;
1791 pci_unmap_single(sis_priv->pci_dev,
1792 sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE,
1793 PCI_DMA_FROMDEVICE);
1795 /* refill the Rx buffer, what if there is not enough
1796 * memory for new socket buffer ?? */
1797 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1799 * Not enough memory to refill the buffer
1800 * so we need to recycle the old one so
1801 * as to avoid creating a memory hole
1804 skb = sis_priv->rx_skbuff[entry];
1805 net_dev->stats.rx_dropped++;
1806 goto refill_rx_ring;
1809 /* This situation should never happen, but due to
1810 some unknown bugs, it is possible that
1811 we are working on NULL sk_buff :-( */
1812 if (sis_priv->rx_skbuff[entry] == NULL) {
1813 if (netif_msg_rx_err(sis_priv))
1814 printk(KERN_WARNING "%s: NULL pointer "
1815 "encountered in Rx ring\n"
1816 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1817 net_dev->name, sis_priv->cur_rx,
1818 sis_priv->dirty_rx);
1823 /* give the socket buffer to upper layers */
1824 rx_skb = sis_priv->rx_skbuff[entry];
1825 skb_put(rx_skb, rx_size);
1826 rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
1829 /* some network statistics */
1830 if ((rx_status & BCAST) == MCAST)
1831 net_dev->stats.multicast++;
1832 net_dev->stats.rx_bytes += rx_size;
1833 net_dev->stats.rx_packets++;
1834 sis_priv->dirty_rx++;
1836 sis_priv->rx_skbuff[entry] = skb;
1837 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1838 sis_priv->rx_ring[entry].bufptr =
1839 pci_map_single(sis_priv->pci_dev, skb->data,
1840 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1843 entry = sis_priv->cur_rx % NUM_RX_DESC;
1844 rx_status = sis_priv->rx_ring[entry].cmdsts;
1847 /* refill the Rx buffer, what if the rate of refilling is slower
1848 * than consuming ?? */
1849 for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) {
1850 struct sk_buff *skb;
1852 entry = sis_priv->dirty_rx % NUM_RX_DESC;
1854 if (sis_priv->rx_skbuff[entry] == NULL) {
1855 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1856 /* not enough memory for skbuff, this makes a
1857 * "hole" on the buffer ring, it is not clear
1858 * how the hardware will react to this kind
1859 * of degenerated buffer */
1860 if (netif_msg_rx_err(sis_priv))
1861 printk(KERN_INFO "%s: Memory squeeze, "
1862 "deferring packet.\n",
1864 net_dev->stats.rx_dropped++;
1867 sis_priv->rx_skbuff[entry] = skb;
1868 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1869 sis_priv->rx_ring[entry].bufptr =
1870 pci_map_single(sis_priv->pci_dev, skb->data,
1871 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1874 /* re-enable the potentially idle receive state matchine */
1875 sw32(cr , RxENA | sr32(cr));
1881 * sis900_finish_xmit - finish up transmission of packets
1882 * @net_dev: the net device to be transmitted on
1884 * Check for error condition and free socket buffer etc
1885 * schedule for more transmission as needed
1886 * Note: This function is called by interrupt handler,
1887 * don't do "too much" work here
1890 static void sis900_finish_xmit (struct net_device *net_dev)
1892 struct sis900_private *sis_priv = netdev_priv(net_dev);
1894 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1895 struct sk_buff *skb;
1899 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1900 tx_status = sis_priv->tx_ring[entry].cmdsts;
1902 if (tx_status & OWN) {
1903 /* The packet is not transmitted yet (owned by hardware) !
1904 * Note: the interrupt is generated only when Tx Machine
1905 * is idle, so this is an almost impossible case */
1909 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1910 /* packet unsuccessfully transmitted */
1911 if (netif_msg_tx_err(sis_priv))
1912 printk(KERN_DEBUG "%s: Transmit "
1913 "error, Tx status %8.8x.\n",
1914 net_dev->name, tx_status);
1915 net_dev->stats.tx_errors++;
1916 if (tx_status & UNDERRUN)
1917 net_dev->stats.tx_fifo_errors++;
1918 if (tx_status & ABORT)
1919 net_dev->stats.tx_aborted_errors++;
1920 if (tx_status & NOCARRIER)
1921 net_dev->stats.tx_carrier_errors++;
1922 if (tx_status & OWCOLL)
1923 net_dev->stats.tx_window_errors++;
1925 /* packet successfully transmitted */
1926 net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
1927 net_dev->stats.tx_bytes += tx_status & DSIZE;
1928 net_dev->stats.tx_packets++;
1930 /* Free the original skb. */
1931 skb = sis_priv->tx_skbuff[entry];
1932 pci_unmap_single(sis_priv->pci_dev,
1933 sis_priv->tx_ring[entry].bufptr, skb->len,
1935 dev_kfree_skb_irq(skb);
1936 sis_priv->tx_skbuff[entry] = NULL;
1937 sis_priv->tx_ring[entry].bufptr = 0;
1938 sis_priv->tx_ring[entry].cmdsts = 0;
1941 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1942 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1943 /* The ring is no longer full, clear tx_full and schedule
1944 * more transmission by netif_wake_queue(net_dev) */
1945 sis_priv->tx_full = 0;
1946 netif_wake_queue (net_dev);
1951 * sis900_close - close sis900 device
1952 * @net_dev: the net device to be closed
1954 * Disable interrupts, stop the Tx and Rx Status Machine
1955 * free Tx and RX socket buffer
1958 static int sis900_close(struct net_device *net_dev)
1960 struct sis900_private *sis_priv = netdev_priv(net_dev);
1961 struct pci_dev *pdev = sis_priv->pci_dev;
1962 void __iomem *ioaddr = sis_priv->ioaddr;
1963 struct sk_buff *skb;
1966 netif_stop_queue(net_dev);
1968 /* Disable interrupts by clearing the interrupt mask. */
1972 /* Stop the chip's Tx and Rx Status Machine */
1973 sw32(cr, RxDIS | TxDIS | sr32(cr));
1975 del_timer(&sis_priv->timer);
1977 free_irq(pdev->irq, net_dev);
1979 /* Free Tx and RX skbuff */
1980 for (i = 0; i < NUM_RX_DESC; i++) {
1981 skb = sis_priv->rx_skbuff[i];
1983 pci_unmap_single(pdev, sis_priv->rx_ring[i].bufptr,
1984 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
1986 sis_priv->rx_skbuff[i] = NULL;
1989 for (i = 0; i < NUM_TX_DESC; i++) {
1990 skb = sis_priv->tx_skbuff[i];
1992 pci_unmap_single(pdev, sis_priv->tx_ring[i].bufptr,
1993 skb->len, PCI_DMA_TODEVICE);
1995 sis_priv->tx_skbuff[i] = NULL;
1999 /* Green! Put the chip in low-power mode. */
2005 * sis900_get_drvinfo - Return information about driver
2006 * @net_dev: the net device to probe
2007 * @info: container for info returned
2009 * Process ethtool command such as "ehtool -i" to show information
2012 static void sis900_get_drvinfo(struct net_device *net_dev,
2013 struct ethtool_drvinfo *info)
2015 struct sis900_private *sis_priv = netdev_priv(net_dev);
2017 strlcpy(info->driver, SIS900_MODULE_NAME, sizeof(info->driver));
2018 strlcpy(info->version, SIS900_DRV_VERSION, sizeof(info->version));
2019 strlcpy(info->bus_info, pci_name(sis_priv->pci_dev),
2020 sizeof(info->bus_info));
2023 static u32 sis900_get_msglevel(struct net_device *net_dev)
2025 struct sis900_private *sis_priv = netdev_priv(net_dev);
2026 return sis_priv->msg_enable;
2029 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
2031 struct sis900_private *sis_priv = netdev_priv(net_dev);
2032 sis_priv->msg_enable = value;
2035 static u32 sis900_get_link(struct net_device *net_dev)
2037 struct sis900_private *sis_priv = netdev_priv(net_dev);
2038 return mii_link_ok(&sis_priv->mii_info);
2041 static int sis900_get_settings(struct net_device *net_dev,
2042 struct ethtool_cmd *cmd)
2044 struct sis900_private *sis_priv = netdev_priv(net_dev);
2045 spin_lock_irq(&sis_priv->lock);
2046 mii_ethtool_gset(&sis_priv->mii_info, cmd);
2047 spin_unlock_irq(&sis_priv->lock);
2051 static int sis900_set_settings(struct net_device *net_dev,
2052 struct ethtool_cmd *cmd)
2054 struct sis900_private *sis_priv = netdev_priv(net_dev);
2056 spin_lock_irq(&sis_priv->lock);
2057 rt = mii_ethtool_sset(&sis_priv->mii_info, cmd);
2058 spin_unlock_irq(&sis_priv->lock);
2062 static int sis900_nway_reset(struct net_device *net_dev)
2064 struct sis900_private *sis_priv = netdev_priv(net_dev);
2065 return mii_nway_restart(&sis_priv->mii_info);
2069 * sis900_set_wol - Set up Wake on Lan registers
2070 * @net_dev: the net device to probe
2071 * @wol: container for info passed to the driver
2073 * Process ethtool command "wol" to setup wake on lan features.
2074 * SiS900 supports sending WoL events if a correct packet is received,
2075 * but there is no simple way to filter them to only a subset (broadcast,
2076 * multicast, unicast or arp).
2079 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2081 struct sis900_private *sis_priv = netdev_priv(net_dev);
2082 void __iomem *ioaddr = sis_priv->ioaddr;
2083 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2085 if (wol->wolopts == 0) {
2086 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2087 cfgpmcsr &= ~PME_EN;
2088 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2089 sw32(pmctrl, pmctrl_bits);
2090 if (netif_msg_wol(sis_priv))
2091 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2095 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2096 | WAKE_BCAST | WAKE_ARP))
2099 if (wol->wolopts & WAKE_MAGIC)
2100 pmctrl_bits |= MAGICPKT;
2101 if (wol->wolopts & WAKE_PHY)
2102 pmctrl_bits |= LINKON;
2104 sw32(pmctrl, pmctrl_bits);
2106 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2108 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2109 if (netif_msg_wol(sis_priv))
2110 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2115 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2117 struct sis900_private *sp = netdev_priv(net_dev);
2118 void __iomem *ioaddr = sp->ioaddr;
2121 pmctrl_bits = sr32(pmctrl);
2122 if (pmctrl_bits & MAGICPKT)
2123 wol->wolopts |= WAKE_MAGIC;
2124 if (pmctrl_bits & LINKON)
2125 wol->wolopts |= WAKE_PHY;
2127 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2130 static const struct ethtool_ops sis900_ethtool_ops = {
2131 .get_drvinfo = sis900_get_drvinfo,
2132 .get_msglevel = sis900_get_msglevel,
2133 .set_msglevel = sis900_set_msglevel,
2134 .get_link = sis900_get_link,
2135 .get_settings = sis900_get_settings,
2136 .set_settings = sis900_set_settings,
2137 .nway_reset = sis900_nway_reset,
2138 .get_wol = sis900_get_wol,
2139 .set_wol = sis900_set_wol
2143 * mii_ioctl - process MII i/o control command
2144 * @net_dev: the net device to command for
2145 * @rq: parameter for command
2146 * @cmd: the i/o command
2148 * Process MII command like read/write MII register
2151 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2153 struct sis900_private *sis_priv = netdev_priv(net_dev);
2154 struct mii_ioctl_data *data = if_mii(rq);
2157 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2158 data->phy_id = sis_priv->mii->phy_addr;
2161 case SIOCGMIIREG: /* Read MII PHY register. */
2162 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2165 case SIOCSMIIREG: /* Write MII PHY register. */
2166 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2174 * sis900_set_config - Set media type by net_device.set_config
2175 * @dev: the net device for media type change
2176 * @map: ifmap passed by ifconfig
2178 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2179 * we support only port changes. All other runtime configuration
2180 * changes will be ignored
2183 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2185 struct sis900_private *sis_priv = netdev_priv(dev);
2186 struct mii_phy *mii_phy = sis_priv->mii;
2190 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2191 /* we switch on the ifmap->port field. I couldn't find anything
2192 * like a definition or standard for the values of that field.
2193 * I think the meaning of those values is device specific. But
2194 * since I would like to change the media type via the ifconfig
2195 * command I use the definition from linux/netdevice.h
2196 * (which seems to be different from the ifport(pcmcia) definition) */
2198 case IF_PORT_UNKNOWN: /* use auto here */
2199 dev->if_port = map->port;
2200 /* we are going to change the media type, so the Link
2201 * will be temporary down and we need to reflect that
2202 * here. When the Link comes up again, it will be
2203 * sensed by the sis_timer procedure, which also does
2204 * all the rest for us */
2205 netif_carrier_off(dev);
2207 /* read current state */
2208 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2210 /* enable auto negotiation and reset the negotioation
2211 * (I don't really know what the auto negatiotiation
2212 * reset really means, but it sounds for me right to
2214 mdio_write(dev, mii_phy->phy_addr,
2215 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2219 case IF_PORT_10BASET: /* 10BaseT */
2220 dev->if_port = map->port;
2222 /* we are going to change the media type, so the Link
2223 * will be temporary down and we need to reflect that
2224 * here. When the Link comes up again, it will be
2225 * sensed by the sis_timer procedure, which also does
2226 * all the rest for us */
2227 netif_carrier_off(dev);
2229 /* set Speed to 10Mbps */
2230 /* read current state */
2231 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2233 /* disable auto negotiation and force 10MBit mode*/
2234 mdio_write(dev, mii_phy->phy_addr,
2235 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2239 case IF_PORT_100BASET: /* 100BaseT */
2240 case IF_PORT_100BASETX: /* 100BaseTx */
2241 dev->if_port = map->port;
2243 /* we are going to change the media type, so the Link
2244 * will be temporary down and we need to reflect that
2245 * here. When the Link comes up again, it will be
2246 * sensed by the sis_timer procedure, which also does
2247 * all the rest for us */
2248 netif_carrier_off(dev);
2250 /* set Speed to 100Mbps */
2251 /* disable auto negotiation and enable 100MBit Mode */
2252 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2253 mdio_write(dev, mii_phy->phy_addr,
2254 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2259 case IF_PORT_10BASE2: /* 10Base2 */
2260 case IF_PORT_AUI: /* AUI */
2261 case IF_PORT_100BASEFX: /* 100BaseFx */
2262 /* These Modes are not supported (are they?)*/
2274 * sis900_mcast_bitnr - compute hashtable index
2275 * @addr: multicast address
2276 * @revision: revision id of chip
2278 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2279 * hash table, which makes this function a little bit different from other drivers
2280 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2281 * multicast hash table.
2284 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2287 u32 crc = ether_crc(6, addr);
2289 /* leave 8 or 7 most siginifant bits */
2290 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2291 return (int)(crc >> 24);
2293 return (int)(crc >> 25);
2297 * set_rx_mode - Set SiS900 receive mode
2298 * @net_dev: the net device to be set
2300 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2301 * And set the appropriate multicast filter.
2302 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2305 static void set_rx_mode(struct net_device *net_dev)
2307 struct sis900_private *sis_priv = netdev_priv(net_dev);
2308 void __iomem *ioaddr = sis_priv->ioaddr;
2309 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2310 int i, table_entries;
2313 /* 635 Hash Table entries = 256(2^16) */
2314 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2315 (sis_priv->chipset_rev == SIS900B_900_REV))
2320 if (net_dev->flags & IFF_PROMISC) {
2321 /* Accept any kinds of packets */
2322 rx_mode = RFPromiscuous;
2323 for (i = 0; i < table_entries; i++)
2324 mc_filter[i] = 0xffff;
2325 } else if ((netdev_mc_count(net_dev) > multicast_filter_limit) ||
2326 (net_dev->flags & IFF_ALLMULTI)) {
2327 /* too many multicast addresses or accept all multicast packet */
2328 rx_mode = RFAAB | RFAAM;
2329 for (i = 0; i < table_entries; i++)
2330 mc_filter[i] = 0xffff;
2332 /* Accept Broadcast packet, destination address matchs our
2333 * MAC address, use Receive Filter to reject unwanted MCAST
2335 struct netdev_hw_addr *ha;
2338 netdev_for_each_mc_addr(ha, net_dev) {
2339 unsigned int bit_nr;
2341 bit_nr = sis900_mcast_bitnr(ha->addr,
2342 sis_priv->chipset_rev);
2343 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2347 /* update Multicast Hash Table in Receive Filter */
2348 for (i = 0; i < table_entries; i++) {
2349 /* why plus 0x04 ??, That makes the correct value for hash table. */
2350 sw32(rfcr, (u32)(0x00000004 + i) << RFADDR_shift);
2351 sw32(rfdr, mc_filter[i]);
2354 sw32(rfcr, RFEN | rx_mode);
2356 /* sis900 is capable of looping back packets at MAC level for
2357 * debugging purpose */
2358 if (net_dev->flags & IFF_LOOPBACK) {
2360 /* We must disable Tx/Rx before setting loopback mode */
2361 cr_saved = sr32(cr);
2362 sw32(cr, cr_saved | TxDIS | RxDIS);
2363 /* enable loopback */
2364 sw32(txcfg, sr32(txcfg) | TxMLB);
2365 sw32(rxcfg, sr32(rxcfg) | RxATX);
2372 * sis900_reset - Reset sis900 MAC
2373 * @net_dev: the net device to reset
2375 * reset sis900 MAC and wait until finished
2376 * reset through command register
2377 * change backoff algorithm for 900B0 & 635 M/B
2380 static void sis900_reset(struct net_device *net_dev)
2382 struct sis900_private *sis_priv = netdev_priv(net_dev);
2383 void __iomem *ioaddr = sis_priv->ioaddr;
2384 u32 status = TxRCMP | RxRCMP;
2391 sw32(cr, RxRESET | TxRESET | RESET | sr32(cr));
2393 /* Check that the chip has finished the reset. */
2394 for (i = 0; status && (i < 1000); i++)
2395 status ^= sr32(isr) & status;
2397 if (sis_priv->chipset_rev >= SIS635A_900_REV ||
2398 sis_priv->chipset_rev == SIS900B_900_REV)
2399 sw32(cfg, PESEL | RND_CNT);
2405 * sis900_remove - Remove sis900 device
2406 * @pci_dev: the pci device to be removed
2408 * remove and release SiS900 net device
2411 static void __devexit sis900_remove(struct pci_dev *pci_dev)
2413 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2414 struct sis900_private *sis_priv = netdev_priv(net_dev);
2416 unregister_netdev(net_dev);
2418 while (sis_priv->first_mii) {
2419 struct mii_phy *phy = sis_priv->first_mii;
2421 sis_priv->first_mii = phy->next;
2425 pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2426 sis_priv->rx_ring_dma);
2427 pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2428 sis_priv->tx_ring_dma);
2429 pci_iounmap(pci_dev, sis_priv->ioaddr);
2430 free_netdev(net_dev);
2431 pci_release_regions(pci_dev);
2432 pci_set_drvdata(pci_dev, NULL);
2437 static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state)
2439 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2440 struct sis900_private *sis_priv = netdev_priv(net_dev);
2441 void __iomem *ioaddr = sis_priv->ioaddr;
2443 if(!netif_running(net_dev))
2446 netif_stop_queue(net_dev);
2447 netif_device_detach(net_dev);
2449 /* Stop the chip's Tx and Rx Status Machine */
2450 sw32(cr, RxDIS | TxDIS | sr32(cr));
2452 pci_set_power_state(pci_dev, PCI_D3hot);
2453 pci_save_state(pci_dev);
2458 static int sis900_resume(struct pci_dev *pci_dev)
2460 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2461 struct sis900_private *sis_priv = netdev_priv(net_dev);
2462 void __iomem *ioaddr = sis_priv->ioaddr;
2464 if(!netif_running(net_dev))
2466 pci_restore_state(pci_dev);
2467 pci_set_power_state(pci_dev, PCI_D0);
2469 sis900_init_rxfilter(net_dev);
2471 sis900_init_tx_ring(net_dev);
2472 sis900_init_rx_ring(net_dev);
2474 set_rx_mode(net_dev);
2476 netif_device_attach(net_dev);
2477 netif_start_queue(net_dev);
2479 /* Workaround for EDB */
2480 sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2482 /* Enable all known interrupts by setting the interrupt mask. */
2483 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE);
2484 sw32(cr, RxENA | sr32(cr));
2487 sis900_check_mode(net_dev, sis_priv->mii);
2491 #endif /* CONFIG_PM */
2493 static struct pci_driver sis900_pci_driver = {
2494 .name = SIS900_MODULE_NAME,
2495 .id_table = sis900_pci_tbl,
2496 .probe = sis900_probe,
2497 .remove = __devexit_p(sis900_remove),
2499 .suspend = sis900_suspend,
2500 .resume = sis900_resume,
2501 #endif /* CONFIG_PM */
2504 static int __init sis900_init_module(void)
2506 /* when a module, this is printed whether or not devices are found in probe */
2511 return pci_register_driver(&sis900_pci_driver);
2514 static void __exit sis900_cleanup_module(void)
2516 pci_unregister_driver(&sis900_pci_driver);
2519 module_init(sis900_init_module);
2520 module_exit(sis900_cleanup_module);