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 <linux/uaccess.h> /* User space memory access functions */
81 #define SIS900_MODULE_NAME "sis900"
82 #define SIS900_DRV_VERSION "v1.08.10 Apr. 2 2006"
84 static const char version[] =
85 KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n";
87 static int max_interrupt_work = 40;
88 static int multicast_filter_limit = 128;
90 static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */
92 #define SIS900_DEF_MSG \
98 /* Time in jiffies before concluding the transmitter is hung. */
99 #define TX_TIMEOUT (4*HZ)
105 static const char * card_names[] = {
106 "SiS 900 PCI Fast Ethernet",
107 "SiS 7016 PCI Fast Ethernet"
110 static const struct pci_device_id sis900_pci_tbl[] = {
111 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900,
112 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900},
113 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016,
114 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016},
117 MODULE_DEVICE_TABLE (pci, sis900_pci_tbl);
119 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex);
121 static const struct mii_chip_info {
130 } mii_chip_table[] = {
131 { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN },
132 { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN },
133 { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN },
134 { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN },
135 { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN },
136 { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN },
137 { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME},
138 { "ICS LAN PHY", 0x0015, 0xF440, LAN },
139 { "ICS LAN PHY", 0x0143, 0xBC70, LAN },
140 { "NS 83851 PHY", 0x2000, 0x5C20, MIX },
141 { "NS 83847 PHY", 0x2000, 0x5C30, MIX },
142 { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN },
143 { "VIA 6103 PHY", 0x0101, 0x8f20, LAN },
148 struct mii_phy * next;
156 typedef struct _BufferDesc {
162 struct sis900_private {
163 struct pci_dev * pci_dev;
167 struct mii_phy * mii;
168 struct mii_phy * first_mii; /* record the first mii structure */
169 unsigned int cur_phy;
170 struct mii_if_info mii_info;
172 void __iomem *ioaddr;
174 struct timer_list timer; /* Link status detection timer. */
175 u8 autong_complete; /* 1: auto-negotiate complete */
179 unsigned int cur_rx, dirty_rx; /* producer/consumer pointers for Tx/Rx ring */
180 unsigned int cur_tx, dirty_tx;
182 /* The saved address of a sent/receive-in-place packet buffer */
183 struct sk_buff *tx_skbuff[NUM_TX_DESC];
184 struct sk_buff *rx_skbuff[NUM_RX_DESC];
188 dma_addr_t tx_ring_dma;
189 dma_addr_t rx_ring_dma;
191 unsigned int tx_full; /* The Tx queue is full. */
198 MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>");
199 MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver");
200 MODULE_LICENSE("GPL");
202 module_param(multicast_filter_limit, int, 0444);
203 module_param(max_interrupt_work, int, 0444);
204 module_param(sis900_debug, int, 0444);
205 MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses");
206 MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt");
207 MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level");
209 #define sw32(reg, val) iowrite32(val, ioaddr + (reg))
210 #define sw8(reg, val) iowrite8(val, ioaddr + (reg))
211 #define sr32(reg) ioread32(ioaddr + (reg))
212 #define sr16(reg) ioread16(ioaddr + (reg))
214 #ifdef CONFIG_NET_POLL_CONTROLLER
215 static void sis900_poll(struct net_device *dev);
217 static int sis900_open(struct net_device *net_dev);
218 static int sis900_mii_probe (struct net_device * net_dev);
219 static void sis900_init_rxfilter (struct net_device * net_dev);
220 static u16 read_eeprom(void __iomem *ioaddr, int location);
221 static int mdio_read(struct net_device *net_dev, int phy_id, int location);
222 static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val);
223 static void sis900_timer(struct timer_list *t);
224 static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy);
225 static void sis900_tx_timeout(struct net_device *net_dev, unsigned int txqueue);
226 static void sis900_init_tx_ring(struct net_device *net_dev);
227 static void sis900_init_rx_ring(struct net_device *net_dev);
228 static netdev_tx_t sis900_start_xmit(struct sk_buff *skb,
229 struct net_device *net_dev);
230 static int sis900_rx(struct net_device *net_dev);
231 static void sis900_finish_xmit (struct net_device *net_dev);
232 static irqreturn_t sis900_interrupt(int irq, void *dev_instance);
233 static int sis900_close(struct net_device *net_dev);
234 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd);
235 static u16 sis900_mcast_bitnr(u8 *addr, u8 revision);
236 static void set_rx_mode(struct net_device *net_dev);
237 static void sis900_reset(struct net_device *net_dev);
238 static void sis630_set_eq(struct net_device *net_dev, u8 revision);
239 static int sis900_set_config(struct net_device *dev, struct ifmap *map);
240 static u16 sis900_default_phy(struct net_device * net_dev);
241 static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy);
242 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr);
243 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr);
244 static void sis900_set_mode(struct sis900_private *, int speed, int duplex);
245 static const struct ethtool_ops sis900_ethtool_ops;
248 * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model
249 * @pci_dev: the sis900 pci device
250 * @net_dev: the net device to get address for
252 * Older SiS900 and friends, use EEPROM to store MAC address.
253 * MAC address is read from read_eeprom() into @net_dev->dev_addr.
256 static int sis900_get_mac_addr(struct pci_dev *pci_dev,
257 struct net_device *net_dev)
259 struct sis900_private *sis_priv = netdev_priv(net_dev);
260 void __iomem *ioaddr = sis_priv->ioaddr;
264 /* check to see if we have sane EEPROM */
265 signature = (u16) read_eeprom(ioaddr, EEPROMSignature);
266 if (signature == 0xffff || signature == 0x0000) {
267 printk (KERN_WARNING "%s: Error EEPROM read %x\n",
268 pci_name(pci_dev), signature);
272 /* get MAC address from EEPROM */
273 for (i = 0; i < 3; i++)
274 ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr);
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.
289 static int sis630e_get_mac_addr(struct pci_dev *pci_dev,
290 struct net_device *net_dev)
292 struct pci_dev *isa_bridge = NULL;
296 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge);
298 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge);
300 printk(KERN_WARNING "%s: Can not find ISA bridge\n",
304 pci_read_config_byte(isa_bridge, 0x48, ®);
305 pci_write_config_byte(isa_bridge, 0x48, reg | 0x40);
307 for (i = 0; i < 6; i++) {
308 outb(0x09 + i, 0x70);
309 ((u8 *)(net_dev->dev_addr))[i] = inb(0x71);
312 pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40);
313 pci_dev_put(isa_bridge);
320 * sis635_get_mac_addr - Get MAC address for SIS635 model
321 * @pci_dev: the sis900 pci device
322 * @net_dev: the net device to get address for
324 * SiS635 model, set MAC Reload Bit to load Mac address from APC
325 * to rfdr. rfdr is accessed through rfcr. MAC address is read into
326 * @net_dev->dev_addr.
329 static int sis635_get_mac_addr(struct pci_dev *pci_dev,
330 struct net_device *net_dev)
332 struct sis900_private *sis_priv = netdev_priv(net_dev);
333 void __iomem *ioaddr = sis_priv->ioaddr;
337 rfcrSave = sr32(rfcr);
339 sw32(cr, rfcrSave | RELOAD);
342 /* disable packet filtering before setting filter */
343 sw32(rfcr, rfcrSave & ~RFEN);
345 /* load MAC addr to filter data register */
346 for (i = 0 ; i < 3 ; i++) {
347 sw32(rfcr, (i << RFADDR_shift));
348 *( ((u16 *)net_dev->dev_addr) + i) = sr16(rfdr);
351 /* enable packet filtering */
352 sw32(rfcr, rfcrSave | RFEN);
358 * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model
359 * @pci_dev: the sis900 pci device
360 * @net_dev: the net device to get address for
362 * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM
364 * LAN and 1394. When accessing EEPROM, send EEREQ signal to hardware first
365 * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be accessed
366 * by LAN, otherwise it is not. After MAC address is read from EEPROM, send
367 * EEDONE signal to refuse EEPROM access by LAN.
368 * The EEPROM map of SiS962 or SiS963 is different to SiS900.
369 * The signature field in SiS962 or SiS963 spec is meaningless.
370 * MAC address is read into @net_dev->dev_addr.
373 static int sis96x_get_mac_addr(struct pci_dev *pci_dev,
374 struct net_device *net_dev)
376 struct sis900_private *sis_priv = netdev_priv(net_dev);
377 void __iomem *ioaddr = sis_priv->ioaddr;
381 for (wait = 0; wait < 2000; wait++) {
382 if (sr32(mear) & EEGNT) {
383 u16 *mac = (u16 *)net_dev->dev_addr;
386 /* get MAC address from EEPROM */
387 for (i = 0; i < 3; i++)
388 mac[i] = read_eeprom(ioaddr, i + EEPROMMACAddr);
399 static const struct net_device_ops sis900_netdev_ops = {
400 .ndo_open = sis900_open,
401 .ndo_stop = sis900_close,
402 .ndo_start_xmit = sis900_start_xmit,
403 .ndo_set_config = sis900_set_config,
404 .ndo_set_rx_mode = set_rx_mode,
405 .ndo_validate_addr = eth_validate_addr,
406 .ndo_set_mac_address = eth_mac_addr,
407 .ndo_do_ioctl = mii_ioctl,
408 .ndo_tx_timeout = sis900_tx_timeout,
409 #ifdef CONFIG_NET_POLL_CONTROLLER
410 .ndo_poll_controller = sis900_poll,
415 * sis900_probe - Probe for sis900 device
416 * @pci_dev: the sis900 pci device
417 * @pci_id: the pci device ID
419 * Check and probe sis900 net device for @pci_dev.
420 * Get mac address according to the chip revision,
421 * and assign SiS900-specific entries in the device structure.
422 * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc.
425 static int sis900_probe(struct pci_dev *pci_dev,
426 const struct pci_device_id *pci_id)
428 struct sis900_private *sis_priv;
429 struct net_device *net_dev;
433 void __iomem *ioaddr;
435 const char *card_name = card_names[pci_id->driver_data];
436 const char *dev_name = pci_name(pci_dev);
438 /* when built into the kernel, we only print version if device is found */
440 static int printed_version;
441 if (!printed_version++)
445 /* setup various bits in PCI command register */
446 ret = pcim_enable_device(pci_dev);
449 i = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32));
451 printk(KERN_ERR "sis900.c: architecture does not support "
452 "32bit PCI busmaster DMA\n");
456 pci_set_master(pci_dev);
458 net_dev = alloc_etherdev(sizeof(struct sis900_private));
461 SET_NETDEV_DEV(net_dev, &pci_dev->dev);
463 /* We do a request_region() to register /proc/ioports info. */
464 ret = pci_request_regions(pci_dev, "sis900");
469 ioaddr = pci_iomap(pci_dev, 0, 0);
475 sis_priv = netdev_priv(net_dev);
476 sis_priv->ioaddr = ioaddr;
477 sis_priv->pci_dev = pci_dev;
478 spin_lock_init(&sis_priv->lock);
480 sis_priv->eeprom_size = 24;
482 pci_set_drvdata(pci_dev, net_dev);
484 ring_space = dma_alloc_coherent(&pci_dev->dev, TX_TOTAL_SIZE,
485 &ring_dma, GFP_KERNEL);
490 sis_priv->tx_ring = ring_space;
491 sis_priv->tx_ring_dma = ring_dma;
493 ring_space = dma_alloc_coherent(&pci_dev->dev, RX_TOTAL_SIZE,
494 &ring_dma, GFP_KERNEL);
499 sis_priv->rx_ring = ring_space;
500 sis_priv->rx_ring_dma = ring_dma;
502 /* The SiS900-specific entries in the device structure. */
503 net_dev->netdev_ops = &sis900_netdev_ops;
504 net_dev->watchdog_timeo = TX_TIMEOUT;
505 net_dev->ethtool_ops = &sis900_ethtool_ops;
507 if (sis900_debug > 0)
508 sis_priv->msg_enable = sis900_debug;
510 sis_priv->msg_enable = SIS900_DEF_MSG;
512 sis_priv->mii_info.dev = net_dev;
513 sis_priv->mii_info.mdio_read = mdio_read;
514 sis_priv->mii_info.mdio_write = mdio_write;
515 sis_priv->mii_info.phy_id_mask = 0x1f;
516 sis_priv->mii_info.reg_num_mask = 0x1f;
518 /* Get Mac address according to the chip revision */
519 sis_priv->chipset_rev = pci_dev->revision;
520 if(netif_msg_probe(sis_priv))
521 printk(KERN_DEBUG "%s: detected revision %2.2x, "
522 "trying to get MAC address...\n",
523 dev_name, sis_priv->chipset_rev);
526 if (sis_priv->chipset_rev == SIS630E_900_REV)
527 ret = sis630e_get_mac_addr(pci_dev, net_dev);
528 else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) )
529 ret = sis635_get_mac_addr(pci_dev, net_dev);
530 else if (sis_priv->chipset_rev == SIS96x_900_REV)
531 ret = sis96x_get_mac_addr(pci_dev, net_dev);
533 ret = sis900_get_mac_addr(pci_dev, net_dev);
535 if (!ret || !is_valid_ether_addr(net_dev->dev_addr)) {
536 eth_hw_addr_random(net_dev);
537 printk(KERN_WARNING "%s: Unreadable or invalid MAC address,"
538 "using random generated one\n", dev_name);
541 /* 630ET : set the mii access mode as software-mode */
542 if (sis_priv->chipset_rev == SIS630ET_900_REV)
543 sw32(cr, ACCESSMODE | sr32(cr));
545 /* probe for mii transceiver */
546 if (sis900_mii_probe(net_dev) == 0) {
547 printk(KERN_WARNING "%s: Error probing MII device.\n",
553 /* save our host bridge revision */
554 dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL);
556 sis_priv->host_bridge_rev = dev->revision;
560 ret = register_netdev(net_dev);
564 /* print some information about our NIC */
565 printk(KERN_INFO "%s: %s at 0x%p, IRQ %d, %pM\n",
566 net_dev->name, card_name, ioaddr, pci_dev->irq,
569 /* Detect Wake on Lan support */
570 ret = (sr32(CFGPMC) & PMESP) >> 27;
571 if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0)
572 printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name);
577 dma_free_coherent(&pci_dev->dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
578 sis_priv->rx_ring_dma);
580 dma_free_coherent(&pci_dev->dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
581 sis_priv->tx_ring_dma);
583 pci_iounmap(pci_dev, ioaddr);
585 free_netdev(net_dev);
590 * sis900_mii_probe - Probe MII PHY for sis900
591 * @net_dev: the net device to probe for
593 * Search for total of 32 possible mii phy addresses.
594 * Identify and set current phy if found one,
595 * return error if it failed to found.
598 static int sis900_mii_probe(struct net_device *net_dev)
600 struct sis900_private *sis_priv = netdev_priv(net_dev);
601 const char *dev_name = pci_name(sis_priv->pci_dev);
602 u16 poll_bit = MII_STAT_LINK, status = 0;
603 unsigned long timeout = jiffies + 5 * HZ;
606 sis_priv->mii = NULL;
608 /* search for total of 32 possible mii phy addresses */
609 for (phy_addr = 0; phy_addr < 32; phy_addr++) {
610 struct mii_phy * mii_phy = NULL;
615 for(i = 0; i < 2; i++)
616 mii_status = mdio_read(net_dev, phy_addr, MII_STATUS);
618 if (mii_status == 0xffff || mii_status == 0x0000) {
619 if (netif_msg_probe(sis_priv))
620 printk(KERN_DEBUG "%s: MII at address %d"
626 if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) {
627 mii_phy = sis_priv->first_mii;
631 mii_phy = mii_phy->next;
637 mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0);
638 mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1);
639 mii_phy->phy_addr = phy_addr;
640 mii_phy->status = mii_status;
641 mii_phy->next = sis_priv->mii;
642 sis_priv->mii = mii_phy;
643 sis_priv->first_mii = mii_phy;
645 for (i = 0; mii_chip_table[i].phy_id1; i++)
646 if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) &&
647 ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){
648 mii_phy->phy_types = mii_chip_table[i].phy_types;
649 if (mii_chip_table[i].phy_types == MIX)
651 (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME;
652 printk(KERN_INFO "%s: %s transceiver found "
655 mii_chip_table[i].name,
660 if( !mii_chip_table[i].phy_id1 ) {
661 printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n",
663 mii_phy->phy_types = UNKNOWN;
667 if (sis_priv->mii == NULL) {
668 printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name);
672 /* select default PHY for mac */
673 sis_priv->mii = NULL;
674 sis900_default_phy( net_dev );
676 /* Reset phy if default phy is internal sis900 */
677 if ((sis_priv->mii->phy_id0 == 0x001D) &&
678 ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000))
679 status = sis900_reset_phy(net_dev, sis_priv->cur_phy);
681 /* workaround for ICS1893 PHY */
682 if ((sis_priv->mii->phy_id0 == 0x0015) &&
683 ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440))
684 mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200);
686 if(status & MII_STAT_LINK){
690 poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit);
691 if (time_after_eq(jiffies, timeout)) {
692 printk(KERN_WARNING "%s: reset phy and link down now\n",
699 if (sis_priv->chipset_rev == SIS630E_900_REV) {
700 /* SiS 630E has some bugs on default value of PHY registers */
701 mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1);
702 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22);
703 mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00);
704 mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0);
705 //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000);
708 if (sis_priv->mii->status & MII_STAT_LINK)
709 netif_carrier_on(net_dev);
711 netif_carrier_off(net_dev);
717 * sis900_default_phy - Select default PHY for sis900 mac.
718 * @net_dev: the net device to probe for
720 * Select first detected PHY with link as default.
721 * If no one is link on, select PHY whose types is HOME as default.
722 * If HOME doesn't exist, select LAN.
725 static u16 sis900_default_phy(struct net_device * net_dev)
727 struct sis900_private *sis_priv = netdev_priv(net_dev);
728 struct mii_phy *phy = NULL, *phy_home = NULL,
729 *default_phy = NULL, *phy_lan = NULL;
732 for (phy=sis_priv->first_mii; phy; phy=phy->next) {
733 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
734 status = mdio_read(net_dev, phy->phy_addr, MII_STATUS);
736 /* Link ON & Not select default PHY & not ghost PHY */
737 if ((status & MII_STAT_LINK) && !default_phy &&
738 (phy->phy_types != UNKNOWN)) {
741 status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL);
742 mdio_write(net_dev, phy->phy_addr, MII_CONTROL,
743 status | MII_CNTL_AUTO | MII_CNTL_ISOLATE);
744 if (phy->phy_types == HOME)
746 else if(phy->phy_types == LAN)
751 if (!default_phy && phy_home)
752 default_phy = phy_home;
753 else if (!default_phy && phy_lan)
754 default_phy = phy_lan;
755 else if (!default_phy)
756 default_phy = sis_priv->first_mii;
758 if (sis_priv->mii != default_phy) {
759 sis_priv->mii = default_phy;
760 sis_priv->cur_phy = default_phy->phy_addr;
761 printk(KERN_INFO "%s: Using transceiver found at address %d as default\n",
762 pci_name(sis_priv->pci_dev), sis_priv->cur_phy);
765 sis_priv->mii_info.phy_id = sis_priv->cur_phy;
767 status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL);
768 status &= (~MII_CNTL_ISOLATE);
770 mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status);
771 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
772 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
779 * sis900_set_capability - set the media capability of network adapter.
780 * @net_dev : the net device to probe for
783 * Set the media capability of network adapter according to
784 * mii status register. It's necessary before auto-negotiate.
787 static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy)
791 mdio_read(net_dev, phy->phy_addr, MII_STATUS);
792 mdio_read(net_dev, phy->phy_addr, MII_STATUS);
794 cap = MII_NWAY_CSMA_CD |
795 ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) |
796 ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) |
797 ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)|
798 ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0);
800 mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap);
804 /* Delay between EEPROM clock transitions. */
805 #define eeprom_delay() sr32(mear)
808 * read_eeprom - Read Serial EEPROM
809 * @ioaddr: base i/o address
810 * @location: the EEPROM location to read
812 * Read Serial EEPROM through EEPROM Access Register.
813 * Note that location is in word (16 bits) unit
816 static u16 read_eeprom(void __iomem *ioaddr, int location)
818 u32 read_cmd = location | EEread;
827 /* Shift the read command (9) bits out. */
828 for (i = 8; i >= 0; i--) {
829 u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS;
833 sw32(mear, dataval | EECLK);
839 /* read the 16-bits data in */
840 for (i = 16; i > 0; i--) {
843 sw32(mear, EECS | EECLK);
845 retval = (retval << 1) | ((sr32(mear) & EEDO) ? 1 : 0);
849 /* Terminate the EEPROM access. */
856 /* Read and write the MII management registers using software-generated
857 serial MDIO protocol. Note that the command bits and data bits are
858 send out separately */
859 #define mdio_delay() sr32(mear)
861 static void mdio_idle(struct sis900_private *sp)
863 void __iomem *ioaddr = sp->ioaddr;
865 sw32(mear, MDIO | MDDIR);
867 sw32(mear, MDIO | MDDIR | MDC);
870 /* Synchronize the MII management interface by shifting 32 one bits out. */
871 static void mdio_reset(struct sis900_private *sp)
873 void __iomem *ioaddr = sp->ioaddr;
876 for (i = 31; i >= 0; i--) {
877 sw32(mear, MDDIR | MDIO);
879 sw32(mear, MDDIR | MDIO | MDC);
885 * mdio_read - read MII PHY register
886 * @net_dev: the net device to read
887 * @phy_id: the phy address to read
888 * @location: the phy register id to read
890 * Read MII registers through MDIO and MDC
891 * using MDIO management frame structure and protocol(defined by ISO/IEC).
892 * Please see SiS7014 or ICS spec
895 static int mdio_read(struct net_device *net_dev, int phy_id, int location)
897 int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
898 struct sis900_private *sp = netdev_priv(net_dev);
899 void __iomem *ioaddr = sp->ioaddr;
906 for (i = 15; i >= 0; i--) {
907 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
911 sw32(mear, dataval | MDC);
915 /* Read the 16 data bits. */
916 for (i = 16; i > 0; i--) {
919 retval = (retval << 1) | ((sr32(mear) & MDIO) ? 1 : 0);
929 * mdio_write - write MII PHY register
930 * @net_dev: the net device to write
931 * @phy_id: the phy address to write
932 * @location: the phy register id to write
933 * @value: the register value to write with
935 * Write MII registers with @value through MDIO and MDC
936 * using MDIO management frame structure and protocol(defined by ISO/IEC)
937 * please see SiS7014 or ICS spec
940 static void mdio_write(struct net_device *net_dev, int phy_id, int location,
943 int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift);
944 struct sis900_private *sp = netdev_priv(net_dev);
945 void __iomem *ioaddr = sp->ioaddr;
951 /* Shift the command bits out. */
952 for (i = 15; i >= 0; i--) {
953 int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR;
957 sw8(mear, dataval | MDC);
962 /* Shift the value bits out. */
963 for (i = 15; i >= 0; i--) {
964 int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR;
968 sw32(mear, dataval | MDC);
973 /* Clear out extra bits. */
974 for (i = 2; i > 0; i--) {
985 * sis900_reset_phy - reset sis900 mii phy.
986 * @net_dev: the net device to write
987 * @phy_addr: default phy address
989 * Some specific phy can't work properly without reset.
990 * This function will be called during initialization and
991 * link status change from ON to DOWN.
994 static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr)
999 for (i = 0; i < 2; i++)
1000 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1002 mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET );
1007 #ifdef CONFIG_NET_POLL_CONTROLLER
1009 * Polling 'interrupt' - used by things like netconsole to send skbs
1010 * without having to re-enable interrupts. It's not called while
1011 * the interrupt routine is executing.
1013 static void sis900_poll(struct net_device *dev)
1015 struct sis900_private *sp = netdev_priv(dev);
1016 const int irq = sp->pci_dev->irq;
1019 sis900_interrupt(irq, dev);
1025 * sis900_open - open sis900 device
1026 * @net_dev: the net device to open
1028 * Do some initialization and start net interface.
1029 * enable interrupts and set sis900 timer.
1033 sis900_open(struct net_device *net_dev)
1035 struct sis900_private *sis_priv = netdev_priv(net_dev);
1036 void __iomem *ioaddr = sis_priv->ioaddr;
1039 /* Soft reset the chip. */
1040 sis900_reset(net_dev);
1042 /* Equalizer workaround Rule */
1043 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1045 ret = request_irq(sis_priv->pci_dev->irq, sis900_interrupt, IRQF_SHARED,
1046 net_dev->name, net_dev);
1050 sis900_init_rxfilter(net_dev);
1052 sis900_init_tx_ring(net_dev);
1053 sis900_init_rx_ring(net_dev);
1055 set_rx_mode(net_dev);
1057 netif_start_queue(net_dev);
1059 /* Workaround for EDB */
1060 sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
1062 /* Enable all known interrupts by setting the interrupt mask. */
1063 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxDESC);
1064 sw32(cr, RxENA | sr32(cr));
1067 sis900_check_mode(net_dev, sis_priv->mii);
1069 /* Set the timer to switch to check for link beat and perhaps switch
1070 to an alternate media type. */
1071 timer_setup(&sis_priv->timer, sis900_timer, 0);
1072 sis_priv->timer.expires = jiffies + HZ;
1073 add_timer(&sis_priv->timer);
1079 * sis900_init_rxfilter - Initialize the Rx filter
1080 * @net_dev: the net device to initialize for
1082 * Set receive filter address to our MAC address
1083 * and enable packet filtering.
1087 sis900_init_rxfilter (struct net_device * net_dev)
1089 struct sis900_private *sis_priv = netdev_priv(net_dev);
1090 void __iomem *ioaddr = sis_priv->ioaddr;
1094 rfcrSave = sr32(rfcr);
1096 /* disable packet filtering before setting filter */
1097 sw32(rfcr, rfcrSave & ~RFEN);
1099 /* load MAC addr to filter data register */
1100 for (i = 0 ; i < 3 ; i++) {
1101 u32 w = (u32) *((u16 *)(net_dev->dev_addr)+i);
1103 sw32(rfcr, i << RFADDR_shift);
1106 if (netif_msg_hw(sis_priv)) {
1107 printk(KERN_DEBUG "%s: Receive Filter Address[%d]=%x\n",
1108 net_dev->name, i, sr32(rfdr));
1112 /* enable packet filtering */
1113 sw32(rfcr, rfcrSave | RFEN);
1117 * sis900_init_tx_ring - Initialize the Tx descriptor ring
1118 * @net_dev: the net device to initialize for
1120 * Initialize the Tx descriptor ring,
1124 sis900_init_tx_ring(struct net_device *net_dev)
1126 struct sis900_private *sis_priv = netdev_priv(net_dev);
1127 void __iomem *ioaddr = sis_priv->ioaddr;
1130 sis_priv->tx_full = 0;
1131 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1133 for (i = 0; i < NUM_TX_DESC; i++) {
1134 sis_priv->tx_skbuff[i] = NULL;
1136 sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma +
1137 ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc);
1138 sis_priv->tx_ring[i].cmdsts = 0;
1139 sis_priv->tx_ring[i].bufptr = 0;
1142 /* load Transmit Descriptor Register */
1143 sw32(txdp, sis_priv->tx_ring_dma);
1144 if (netif_msg_hw(sis_priv))
1145 printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n",
1146 net_dev->name, sr32(txdp));
1150 * sis900_init_rx_ring - Initialize the Rx descriptor ring
1151 * @net_dev: the net device to initialize for
1153 * Initialize the Rx descriptor ring,
1154 * and pre-allocate receive buffers (socket buffer)
1158 sis900_init_rx_ring(struct net_device *net_dev)
1160 struct sis900_private *sis_priv = netdev_priv(net_dev);
1161 void __iomem *ioaddr = sis_priv->ioaddr;
1164 sis_priv->cur_rx = 0;
1165 sis_priv->dirty_rx = 0;
1167 /* init RX descriptor */
1168 for (i = 0; i < NUM_RX_DESC; i++) {
1169 sis_priv->rx_skbuff[i] = NULL;
1171 sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma +
1172 ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc);
1173 sis_priv->rx_ring[i].cmdsts = 0;
1174 sis_priv->rx_ring[i].bufptr = 0;
1177 /* allocate sock buffers */
1178 for (i = 0; i < NUM_RX_DESC; i++) {
1179 struct sk_buff *skb;
1181 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1182 /* not enough memory for skbuff, this makes a "hole"
1183 on the buffer ring, it is not clear how the
1184 hardware will react to this kind of degenerated
1188 sis_priv->rx_skbuff[i] = skb;
1189 sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE;
1190 sis_priv->rx_ring[i].bufptr = dma_map_single(&sis_priv->pci_dev->dev,
1194 if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,
1195 sis_priv->rx_ring[i].bufptr))) {
1197 sis_priv->rx_skbuff[i] = NULL;
1201 sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC);
1203 /* load Receive Descriptor Register */
1204 sw32(rxdp, sis_priv->rx_ring_dma);
1205 if (netif_msg_hw(sis_priv))
1206 printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n",
1207 net_dev->name, sr32(rxdp));
1211 * sis630_set_eq - set phy equalizer value for 630 LAN
1212 * @net_dev: the net device to set equalizer value
1213 * @revision: 630 LAN revision number
1215 * 630E equalizer workaround rule(Cyrus Huang 08/15)
1216 * PHY register 14h(Test)
1217 * Bit 14: 0 -- Automatically detect (default)
1218 * 1 -- Manually set Equalizer filter
1219 * Bit 13: 0 -- (Default)
1220 * 1 -- Speed up convergence of equalizer setting
1221 * Bit 9 : 0 -- (Default)
1222 * 1 -- Disable Baseline Wander
1223 * Bit 3~7 -- Equalizer filter setting
1224 * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0
1225 * Then calculate equalizer value
1226 * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0
1227 * Link Off:Set Bit 13 to 1, Bit 14 to 0
1228 * Calculate Equalizer value:
1229 * When Link is ON and Bit 14 is 0, SIS900PHY will auto-detect proper equalizer value.
1230 * When the equalizer is stable, this value is not a fixed value. It will be within
1231 * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9)
1232 * 0 <= max <= 4 --> set equalizer to max
1233 * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min
1234 * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min
1237 static void sis630_set_eq(struct net_device *net_dev, u8 revision)
1239 struct sis900_private *sis_priv = netdev_priv(net_dev);
1240 u16 reg14h, eq_value=0, max_value=0, min_value=0;
1243 if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1244 revision == SIS630A_900_REV || revision == SIS630ET_900_REV) )
1247 if (netif_carrier_ok(net_dev)) {
1248 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1249 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1250 (0x2200 | reg14h) & 0xBFFF);
1251 for (i=0; i < maxcount; i++) {
1252 eq_value = (0x00F8 & mdio_read(net_dev,
1253 sis_priv->cur_phy, MII_RESV)) >> 3;
1255 max_value=min_value=eq_value;
1256 max_value = (eq_value > max_value) ?
1257 eq_value : max_value;
1258 min_value = (eq_value < min_value) ?
1259 eq_value : min_value;
1261 /* 630E rule to determine the equalizer value */
1262 if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV ||
1263 revision == SIS630ET_900_REV) {
1265 eq_value = max_value;
1266 else if (max_value >= 5 && max_value < 15)
1267 eq_value = (max_value == min_value) ?
1268 max_value+2 : max_value+1;
1269 else if (max_value >= 15)
1270 eq_value=(max_value == min_value) ?
1271 max_value+6 : max_value+5;
1273 /* 630B0&B1 rule to determine the equalizer value */
1274 if (revision == SIS630A_900_REV &&
1275 (sis_priv->host_bridge_rev == SIS630B0 ||
1276 sis_priv->host_bridge_rev == SIS630B1)) {
1280 eq_value = (max_value + min_value + 1)/2;
1282 /* write equalizer value and setting */
1283 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1284 reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8);
1285 reg14h = (reg14h | 0x6000) & 0xFDFF;
1286 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h);
1288 reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV);
1289 if (revision == SIS630A_900_REV &&
1290 (sis_priv->host_bridge_rev == SIS630B0 ||
1291 sis_priv->host_bridge_rev == SIS630B1))
1292 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1293 (reg14h | 0x2200) & 0xBFFF);
1295 mdio_write(net_dev, sis_priv->cur_phy, MII_RESV,
1296 (reg14h | 0x2000) & 0xBFFF);
1301 * sis900_timer - sis900 timer routine
1302 * @t: timer list containing a pointer to sis900 net device
1304 * On each timer ticks we check two things,
1305 * link status (ON/OFF) and link mode (10/100/Full/Half)
1308 static void sis900_timer(struct timer_list *t)
1310 struct sis900_private *sis_priv = from_timer(sis_priv, t, timer);
1311 struct net_device *net_dev = sis_priv->mii_info.dev;
1312 struct mii_phy *mii_phy = sis_priv->mii;
1313 static const int next_tick = 5*HZ;
1314 int speed = 0, duplex = 0;
1317 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1318 status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS);
1320 /* Link OFF -> ON */
1321 if (!netif_carrier_ok(net_dev)) {
1323 /* Search for new PHY */
1324 status = sis900_default_phy(net_dev);
1325 mii_phy = sis_priv->mii;
1327 if (status & MII_STAT_LINK) {
1328 WARN_ON(!(status & MII_STAT_AUTO_DONE));
1330 sis900_read_mode(net_dev, &speed, &duplex);
1332 sis900_set_mode(sis_priv, speed, duplex);
1333 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1334 netif_carrier_on(net_dev);
1338 /* Link ON -> OFF */
1339 if (!(status & MII_STAT_LINK)){
1340 netif_carrier_off(net_dev);
1341 if(netif_msg_link(sis_priv))
1342 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1344 /* Change mode issue */
1345 if ((mii_phy->phy_id0 == 0x001D) &&
1346 ((mii_phy->phy_id1 & 0xFFF0) == 0x8000))
1347 sis900_reset_phy(net_dev, sis_priv->cur_phy);
1349 sis630_set_eq(net_dev, sis_priv->chipset_rev);
1355 sis_priv->timer.expires = jiffies + next_tick;
1356 add_timer(&sis_priv->timer);
1360 * sis900_check_mode - check the media mode for sis900
1361 * @net_dev: the net device to be checked
1362 * @mii_phy: the mii phy
1364 * Older driver gets the media mode from mii status output
1365 * register. Now we set our media capability and auto-negotiate
1366 * to get the upper bound of speed and duplex between two ends.
1367 * If the types of mii phy is HOME, it doesn't need to auto-negotiate
1368 * and autong_complete should be set to 1.
1371 static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy)
1373 struct sis900_private *sis_priv = netdev_priv(net_dev);
1374 void __iomem *ioaddr = sis_priv->ioaddr;
1377 if (mii_phy->phy_types == LAN) {
1378 sw32(cfg, ~EXD & sr32(cfg));
1379 sis900_set_capability(net_dev , mii_phy);
1380 sis900_auto_negotiate(net_dev, sis_priv->cur_phy);
1382 sw32(cfg, EXD | sr32(cfg));
1383 speed = HW_SPEED_HOME;
1384 duplex = FDX_CAPABLE_HALF_SELECTED;
1385 sis900_set_mode(sis_priv, speed, duplex);
1386 sis_priv->autong_complete = 1;
1391 * sis900_set_mode - Set the media mode of mac register.
1392 * @sp: the device private data
1393 * @speed : the transmit speed to be determined
1394 * @duplex: the duplex mode to be determined
1396 * Set the media mode of mac register txcfg/rxcfg according to
1397 * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB
1398 * bus is used instead of PCI bus. When this bit is set 1, the
1399 * Max DMA Burst Size for TX/RX DMA should be no larger than 16
1403 static void sis900_set_mode(struct sis900_private *sp, int speed, int duplex)
1405 void __iomem *ioaddr = sp->ioaddr;
1406 u32 tx_flags = 0, rx_flags = 0;
1408 if (sr32( cfg) & EDB_MASTER_EN) {
1409 tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) |
1410 (TX_FILL_THRESH << TxFILLT_shift);
1411 rx_flags = DMA_BURST_64 << RxMXDMA_shift;
1413 tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) |
1414 (TX_FILL_THRESH << TxFILLT_shift);
1415 rx_flags = DMA_BURST_512 << RxMXDMA_shift;
1418 if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) {
1419 rx_flags |= (RxDRNT_10 << RxDRNT_shift);
1420 tx_flags |= (TxDRNT_10 << TxDRNT_shift);
1422 rx_flags |= (RxDRNT_100 << RxDRNT_shift);
1423 tx_flags |= (TxDRNT_100 << TxDRNT_shift);
1426 if (duplex == FDX_CAPABLE_FULL_SELECTED) {
1427 tx_flags |= (TxCSI | TxHBI);
1431 #if IS_ENABLED(CONFIG_VLAN_8021Q)
1432 /* Can accept Jumbo packet */
1436 sw32(txcfg, tx_flags);
1437 sw32(rxcfg, rx_flags);
1441 * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit.
1442 * @net_dev: the net device to read mode for
1443 * @phy_addr: mii phy address
1445 * If the adapter is link-on, set the auto-negotiate enable/reset bit.
1446 * autong_complete should be set to 0 when starting auto-negotiation.
1447 * autong_complete should be set to 1 if we didn't start auto-negotiation.
1448 * sis900_timer will wait for link on again if autong_complete = 0.
1451 static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr)
1453 struct sis900_private *sis_priv = netdev_priv(net_dev);
1457 for (i = 0; i < 2; i++)
1458 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1460 if (!(status & MII_STAT_LINK)){
1461 if(netif_msg_link(sis_priv))
1462 printk(KERN_INFO "%s: Media Link Off\n", net_dev->name);
1463 sis_priv->autong_complete = 1;
1464 netif_carrier_off(net_dev);
1468 /* (Re)start AutoNegotiate */
1469 mdio_write(net_dev, phy_addr, MII_CONTROL,
1470 MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
1471 sis_priv->autong_complete = 0;
1476 * sis900_read_mode - read media mode for sis900 internal phy
1477 * @net_dev: the net device to read mode for
1478 * @speed : the transmit speed to be determined
1479 * @duplex : the duplex mode to be determined
1481 * The capability of remote end will be put in mii register autorec
1482 * after auto-negotiation. Use AND operation to get the upper bound
1483 * of speed and duplex between two ends.
1486 static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex)
1488 struct sis900_private *sis_priv = netdev_priv(net_dev);
1489 struct mii_phy *phy = sis_priv->mii;
1490 int phy_addr = sis_priv->cur_phy;
1492 u16 autoadv, autorec;
1495 for (i = 0; i < 2; i++)
1496 status = mdio_read(net_dev, phy_addr, MII_STATUS);
1498 if (!(status & MII_STAT_LINK))
1501 /* AutoNegotiate completed */
1502 autoadv = mdio_read(net_dev, phy_addr, MII_ANADV);
1503 autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR);
1504 status = autoadv & autorec;
1506 *speed = HW_SPEED_10_MBPS;
1507 *duplex = FDX_CAPABLE_HALF_SELECTED;
1509 if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX))
1510 *speed = HW_SPEED_100_MBPS;
1511 if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX))
1512 *duplex = FDX_CAPABLE_FULL_SELECTED;
1514 sis_priv->autong_complete = 1;
1516 /* Workaround for Realtek RTL8201 PHY issue */
1517 if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) {
1518 if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX)
1519 *duplex = FDX_CAPABLE_FULL_SELECTED;
1520 if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01)
1521 *speed = HW_SPEED_100_MBPS;
1524 if(netif_msg_link(sis_priv))
1525 printk(KERN_INFO "%s: Media Link On %s %s-duplex\n",
1527 *speed == HW_SPEED_100_MBPS ?
1528 "100mbps" : "10mbps",
1529 *duplex == FDX_CAPABLE_FULL_SELECTED ?
1534 * sis900_tx_timeout - sis900 transmit timeout routine
1535 * @net_dev: the net device to transmit
1536 * @txqueue: index of hanging queue
1538 * print transmit timeout status
1539 * disable interrupts and do some tasks
1542 static void sis900_tx_timeout(struct net_device *net_dev, unsigned int txqueue)
1544 struct sis900_private *sis_priv = netdev_priv(net_dev);
1545 void __iomem *ioaddr = sis_priv->ioaddr;
1546 unsigned long flags;
1549 if (netif_msg_tx_err(sis_priv)) {
1550 printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x\n",
1551 net_dev->name, sr32(cr), sr32(isr));
1554 /* Disable interrupts by clearing the interrupt mask. */
1557 /* use spinlock to prevent interrupt handler accessing buffer ring */
1558 spin_lock_irqsave(&sis_priv->lock, flags);
1560 /* discard unsent packets */
1561 sis_priv->dirty_tx = sis_priv->cur_tx = 0;
1562 for (i = 0; i < NUM_TX_DESC; i++) {
1563 struct sk_buff *skb = sis_priv->tx_skbuff[i];
1566 dma_unmap_single(&sis_priv->pci_dev->dev,
1567 sis_priv->tx_ring[i].bufptr,
1568 skb->len, DMA_TO_DEVICE);
1569 dev_kfree_skb_irq(skb);
1570 sis_priv->tx_skbuff[i] = NULL;
1571 sis_priv->tx_ring[i].cmdsts = 0;
1572 sis_priv->tx_ring[i].bufptr = 0;
1573 net_dev->stats.tx_dropped++;
1576 sis_priv->tx_full = 0;
1577 netif_wake_queue(net_dev);
1579 spin_unlock_irqrestore(&sis_priv->lock, flags);
1581 netif_trans_update(net_dev); /* prevent tx timeout */
1583 /* load Transmit Descriptor Register */
1584 sw32(txdp, sis_priv->tx_ring_dma);
1586 /* Enable all known interrupts by setting the interrupt mask. */
1587 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxDESC);
1591 * sis900_start_xmit - sis900 start transmit routine
1592 * @skb: socket buffer pointer to put the data being transmitted
1593 * @net_dev: the net device to transmit with
1595 * Set the transmit buffer descriptor,
1596 * and write TxENA to enable transmit state machine.
1597 * tell upper layer if the buffer is full
1601 sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
1603 struct sis900_private *sis_priv = netdev_priv(net_dev);
1604 void __iomem *ioaddr = sis_priv->ioaddr;
1606 unsigned long flags;
1607 unsigned int index_cur_tx, index_dirty_tx;
1608 unsigned int count_dirty_tx;
1610 spin_lock_irqsave(&sis_priv->lock, flags);
1612 /* Calculate the next Tx descriptor entry. */
1613 entry = sis_priv->cur_tx % NUM_TX_DESC;
1614 sis_priv->tx_skbuff[entry] = skb;
1616 /* set the transmit buffer descriptor and enable Transmit State Machine */
1617 sis_priv->tx_ring[entry].bufptr = dma_map_single(&sis_priv->pci_dev->dev,
1618 skb->data, skb->len,
1620 if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,
1621 sis_priv->tx_ring[entry].bufptr))) {
1622 dev_kfree_skb_any(skb);
1623 sis_priv->tx_skbuff[entry] = NULL;
1624 net_dev->stats.tx_dropped++;
1625 spin_unlock_irqrestore(&sis_priv->lock, flags);
1626 return NETDEV_TX_OK;
1628 sis_priv->tx_ring[entry].cmdsts = (OWN | INTR | skb->len);
1629 sw32(cr, TxENA | sr32(cr));
1631 sis_priv->cur_tx ++;
1632 index_cur_tx = sis_priv->cur_tx;
1633 index_dirty_tx = sis_priv->dirty_tx;
1635 for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++)
1638 if (index_cur_tx == index_dirty_tx) {
1639 /* dirty_tx is met in the cycle of cur_tx, buffer full */
1640 sis_priv->tx_full = 1;
1641 netif_stop_queue(net_dev);
1642 } else if (count_dirty_tx < NUM_TX_DESC) {
1643 /* Typical path, tell upper layer that more transmission is possible */
1644 netif_start_queue(net_dev);
1646 /* buffer full, tell upper layer no more transmission */
1647 sis_priv->tx_full = 1;
1648 netif_stop_queue(net_dev);
1651 spin_unlock_irqrestore(&sis_priv->lock, flags);
1653 if (netif_msg_tx_queued(sis_priv))
1654 printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d "
1656 net_dev->name, skb->data, (int)skb->len, entry);
1658 return NETDEV_TX_OK;
1662 * sis900_interrupt - sis900 interrupt handler
1663 * @irq: the irq number
1664 * @dev_instance: the client data object
1666 * The interrupt handler does all of the Rx thread work,
1667 * and cleans up after the Tx thread
1670 static irqreturn_t sis900_interrupt(int irq, void *dev_instance)
1672 struct net_device *net_dev = dev_instance;
1673 struct sis900_private *sis_priv = netdev_priv(net_dev);
1674 int boguscnt = max_interrupt_work;
1675 void __iomem *ioaddr = sis_priv->ioaddr;
1677 unsigned int handled = 0;
1679 spin_lock (&sis_priv->lock);
1684 if ((status & (HIBERR|TxURN|TxERR|TxDESC|RxORN|RxERR|RxOK)) == 0)
1685 /* nothing interesting happened */
1689 /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */
1690 if (status & (RxORN | RxERR | RxOK))
1694 if (status & (TxURN | TxERR | TxDESC))
1696 sis900_finish_xmit(net_dev);
1698 /* something strange happened !!! */
1699 if (status & HIBERR) {
1700 if(netif_msg_intr(sis_priv))
1701 printk(KERN_INFO "%s: Abnormal interrupt, "
1702 "status %#8.8x.\n", net_dev->name, status);
1705 if (--boguscnt < 0) {
1706 if(netif_msg_intr(sis_priv))
1707 printk(KERN_INFO "%s: Too much work at interrupt, "
1708 "interrupt status = %#8.8x.\n",
1709 net_dev->name, status);
1714 if(netif_msg_intr(sis_priv))
1715 printk(KERN_DEBUG "%s: exiting interrupt, "
1716 "interrupt status = %#8.8x\n",
1717 net_dev->name, sr32(isr));
1719 spin_unlock (&sis_priv->lock);
1720 return IRQ_RETVAL(handled);
1724 * sis900_rx - sis900 receive routine
1725 * @net_dev: the net device which receives data
1727 * Process receive interrupt events,
1728 * put buffer to higher layer and refill buffer pool
1729 * Note: This function is called by interrupt handler,
1730 * don't do "too much" work here
1733 static int sis900_rx(struct net_device *net_dev)
1735 struct sis900_private *sis_priv = netdev_priv(net_dev);
1736 void __iomem *ioaddr = sis_priv->ioaddr;
1737 unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC;
1738 u32 rx_status = sis_priv->rx_ring[entry].cmdsts;
1741 if (netif_msg_rx_status(sis_priv))
1742 printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d "
1744 sis_priv->cur_rx, sis_priv->dirty_rx, rx_status);
1745 rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx;
1747 while (rx_status & OWN) {
1748 unsigned int rx_size;
1749 unsigned int data_size;
1751 if (--rx_work_limit < 0)
1754 data_size = rx_status & DSIZE;
1755 rx_size = data_size - CRC_SIZE;
1757 #if IS_ENABLED(CONFIG_VLAN_8021Q)
1758 /* ``TOOLONG'' flag means jumbo packet received. */
1759 if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE)
1760 rx_status &= (~ ((unsigned int)TOOLONG));
1763 if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) {
1764 /* corrupted packet received */
1765 if (netif_msg_rx_err(sis_priv))
1766 printk(KERN_DEBUG "%s: Corrupted packet "
1767 "received, buffer status = 0x%8.8x/%d.\n",
1768 net_dev->name, rx_status, data_size);
1769 net_dev->stats.rx_errors++;
1770 if (rx_status & OVERRUN)
1771 net_dev->stats.rx_over_errors++;
1772 if (rx_status & (TOOLONG|RUNT))
1773 net_dev->stats.rx_length_errors++;
1774 if (rx_status & (RXISERR | FAERR))
1775 net_dev->stats.rx_frame_errors++;
1776 if (rx_status & CRCERR)
1777 net_dev->stats.rx_crc_errors++;
1778 /* reset buffer descriptor state */
1779 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1781 struct sk_buff * skb;
1782 struct sk_buff * rx_skb;
1784 dma_unmap_single(&sis_priv->pci_dev->dev,
1785 sis_priv->rx_ring[entry].bufptr,
1786 RX_BUF_SIZE, DMA_FROM_DEVICE);
1788 /* refill the Rx buffer, what if there is not enough
1789 * memory for new socket buffer ?? */
1790 if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) {
1792 * Not enough memory to refill the buffer
1793 * so we need to recycle the old one so
1794 * as to avoid creating a memory hole
1797 skb = sis_priv->rx_skbuff[entry];
1798 net_dev->stats.rx_dropped++;
1799 goto refill_rx_ring;
1802 /* This situation should never happen, but due to
1803 some unknown bugs, it is possible that
1804 we are working on NULL sk_buff :-( */
1805 if (sis_priv->rx_skbuff[entry] == NULL) {
1806 if (netif_msg_rx_err(sis_priv))
1807 printk(KERN_WARNING "%s: NULL pointer "
1808 "encountered in Rx ring\n"
1809 "cur_rx:%4.4d, dirty_rx:%4.4d\n",
1810 net_dev->name, sis_priv->cur_rx,
1811 sis_priv->dirty_rx);
1816 /* give the socket buffer to upper layers */
1817 rx_skb = sis_priv->rx_skbuff[entry];
1818 skb_put(rx_skb, rx_size);
1819 rx_skb->protocol = eth_type_trans(rx_skb, net_dev);
1822 /* some network statistics */
1823 if ((rx_status & BCAST) == MCAST)
1824 net_dev->stats.multicast++;
1825 net_dev->stats.rx_bytes += rx_size;
1826 net_dev->stats.rx_packets++;
1827 sis_priv->dirty_rx++;
1829 sis_priv->rx_skbuff[entry] = skb;
1830 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1831 sis_priv->rx_ring[entry].bufptr =
1832 dma_map_single(&sis_priv->pci_dev->dev,
1833 skb->data, RX_BUF_SIZE,
1835 if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,
1836 sis_priv->rx_ring[entry].bufptr))) {
1837 dev_kfree_skb_irq(skb);
1838 sis_priv->rx_skbuff[entry] = NULL;
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 skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE);
1857 /* not enough memory for skbuff, this makes a
1858 * "hole" on the buffer ring, it is not clear
1859 * how the hardware will react to this kind
1860 * of degenerated buffer */
1861 net_dev->stats.rx_dropped++;
1864 sis_priv->rx_skbuff[entry] = skb;
1865 sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE;
1866 sis_priv->rx_ring[entry].bufptr =
1867 dma_map_single(&sis_priv->pci_dev->dev,
1868 skb->data, RX_BUF_SIZE,
1870 if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev,
1871 sis_priv->rx_ring[entry].bufptr))) {
1872 dev_kfree_skb_irq(skb);
1873 sis_priv->rx_skbuff[entry] = NULL;
1878 /* re-enable the potentially idle receive state matchine */
1879 sw32(cr , RxENA | sr32(cr));
1885 * sis900_finish_xmit - finish up transmission of packets
1886 * @net_dev: the net device to be transmitted on
1888 * Check for error condition and free socket buffer etc
1889 * schedule for more transmission as needed
1890 * Note: This function is called by interrupt handler,
1891 * don't do "too much" work here
1894 static void sis900_finish_xmit (struct net_device *net_dev)
1896 struct sis900_private *sis_priv = netdev_priv(net_dev);
1898 for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) {
1899 struct sk_buff *skb;
1903 entry = sis_priv->dirty_tx % NUM_TX_DESC;
1904 tx_status = sis_priv->tx_ring[entry].cmdsts;
1906 if (tx_status & OWN) {
1907 /* The packet is not transmitted yet (owned by hardware) !
1908 * Note: this is an almost impossible condition
1909 * on TxDESC interrupt ('descriptor interrupt') */
1913 if (tx_status & (ABORT | UNDERRUN | OWCOLL)) {
1914 /* packet unsuccessfully transmitted */
1915 if (netif_msg_tx_err(sis_priv))
1916 printk(KERN_DEBUG "%s: Transmit "
1917 "error, Tx status %8.8x.\n",
1918 net_dev->name, tx_status);
1919 net_dev->stats.tx_errors++;
1920 if (tx_status & UNDERRUN)
1921 net_dev->stats.tx_fifo_errors++;
1922 if (tx_status & ABORT)
1923 net_dev->stats.tx_aborted_errors++;
1924 if (tx_status & NOCARRIER)
1925 net_dev->stats.tx_carrier_errors++;
1926 if (tx_status & OWCOLL)
1927 net_dev->stats.tx_window_errors++;
1929 /* packet successfully transmitted */
1930 net_dev->stats.collisions += (tx_status & COLCNT) >> 16;
1931 net_dev->stats.tx_bytes += tx_status & DSIZE;
1932 net_dev->stats.tx_packets++;
1934 /* Free the original skb. */
1935 skb = sis_priv->tx_skbuff[entry];
1936 dma_unmap_single(&sis_priv->pci_dev->dev,
1937 sis_priv->tx_ring[entry].bufptr, skb->len,
1939 dev_consume_skb_irq(skb);
1940 sis_priv->tx_skbuff[entry] = NULL;
1941 sis_priv->tx_ring[entry].bufptr = 0;
1942 sis_priv->tx_ring[entry].cmdsts = 0;
1945 if (sis_priv->tx_full && netif_queue_stopped(net_dev) &&
1946 sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) {
1947 /* The ring is no longer full, clear tx_full and schedule
1948 * more transmission by netif_wake_queue(net_dev) */
1949 sis_priv->tx_full = 0;
1950 netif_wake_queue (net_dev);
1955 * sis900_close - close sis900 device
1956 * @net_dev: the net device to be closed
1958 * Disable interrupts, stop the Tx and Rx Status Machine
1959 * free Tx and RX socket buffer
1962 static int sis900_close(struct net_device *net_dev)
1964 struct sis900_private *sis_priv = netdev_priv(net_dev);
1965 struct pci_dev *pdev = sis_priv->pci_dev;
1966 void __iomem *ioaddr = sis_priv->ioaddr;
1967 struct sk_buff *skb;
1970 netif_stop_queue(net_dev);
1972 /* Disable interrupts by clearing the interrupt mask. */
1976 /* Stop the chip's Tx and Rx Status Machine */
1977 sw32(cr, RxDIS | TxDIS | sr32(cr));
1979 del_timer(&sis_priv->timer);
1981 free_irq(pdev->irq, net_dev);
1983 /* Free Tx and RX skbuff */
1984 for (i = 0; i < NUM_RX_DESC; i++) {
1985 skb = sis_priv->rx_skbuff[i];
1987 dma_unmap_single(&pdev->dev,
1988 sis_priv->rx_ring[i].bufptr,
1989 RX_BUF_SIZE, DMA_FROM_DEVICE);
1991 sis_priv->rx_skbuff[i] = NULL;
1994 for (i = 0; i < NUM_TX_DESC; i++) {
1995 skb = sis_priv->tx_skbuff[i];
1997 dma_unmap_single(&pdev->dev,
1998 sis_priv->tx_ring[i].bufptr,
1999 skb->len, DMA_TO_DEVICE);
2001 sis_priv->tx_skbuff[i] = NULL;
2005 /* Green! Put the chip in low-power mode. */
2011 * sis900_get_drvinfo - Return information about driver
2012 * @net_dev: the net device to probe
2013 * @info: container for info returned
2015 * Process ethtool command such as "ehtool -i" to show information
2018 static void sis900_get_drvinfo(struct net_device *net_dev,
2019 struct ethtool_drvinfo *info)
2021 struct sis900_private *sis_priv = netdev_priv(net_dev);
2023 strlcpy(info->driver, SIS900_MODULE_NAME, sizeof(info->driver));
2024 strlcpy(info->version, SIS900_DRV_VERSION, sizeof(info->version));
2025 strlcpy(info->bus_info, pci_name(sis_priv->pci_dev),
2026 sizeof(info->bus_info));
2029 static u32 sis900_get_msglevel(struct net_device *net_dev)
2031 struct sis900_private *sis_priv = netdev_priv(net_dev);
2032 return sis_priv->msg_enable;
2035 static void sis900_set_msglevel(struct net_device *net_dev, u32 value)
2037 struct sis900_private *sis_priv = netdev_priv(net_dev);
2038 sis_priv->msg_enable = value;
2041 static u32 sis900_get_link(struct net_device *net_dev)
2043 struct sis900_private *sis_priv = netdev_priv(net_dev);
2044 return mii_link_ok(&sis_priv->mii_info);
2047 static int sis900_get_link_ksettings(struct net_device *net_dev,
2048 struct ethtool_link_ksettings *cmd)
2050 struct sis900_private *sis_priv = netdev_priv(net_dev);
2051 spin_lock_irq(&sis_priv->lock);
2052 mii_ethtool_get_link_ksettings(&sis_priv->mii_info, cmd);
2053 spin_unlock_irq(&sis_priv->lock);
2057 static int sis900_set_link_ksettings(struct net_device *net_dev,
2058 const struct ethtool_link_ksettings *cmd)
2060 struct sis900_private *sis_priv = netdev_priv(net_dev);
2062 spin_lock_irq(&sis_priv->lock);
2063 rt = mii_ethtool_set_link_ksettings(&sis_priv->mii_info, cmd);
2064 spin_unlock_irq(&sis_priv->lock);
2068 static int sis900_nway_reset(struct net_device *net_dev)
2070 struct sis900_private *sis_priv = netdev_priv(net_dev);
2071 return mii_nway_restart(&sis_priv->mii_info);
2075 * sis900_set_wol - Set up Wake on Lan registers
2076 * @net_dev: the net device to probe
2077 * @wol: container for info passed to the driver
2079 * Process ethtool command "wol" to setup wake on lan features.
2080 * SiS900 supports sending WoL events if a correct packet is received,
2081 * but there is no simple way to filter them to only a subset (broadcast,
2082 * multicast, unicast or arp).
2085 static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2087 struct sis900_private *sis_priv = netdev_priv(net_dev);
2088 void __iomem *ioaddr = sis_priv->ioaddr;
2089 u32 cfgpmcsr = 0, pmctrl_bits = 0;
2091 if (wol->wolopts == 0) {
2092 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2093 cfgpmcsr &= ~PME_EN;
2094 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2095 sw32(pmctrl, pmctrl_bits);
2096 if (netif_msg_wol(sis_priv))
2097 printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name);
2101 if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST
2102 | WAKE_BCAST | WAKE_ARP))
2105 if (wol->wolopts & WAKE_MAGIC)
2106 pmctrl_bits |= MAGICPKT;
2107 if (wol->wolopts & WAKE_PHY)
2108 pmctrl_bits |= LINKON;
2110 sw32(pmctrl, pmctrl_bits);
2112 pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr);
2114 pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr);
2115 if (netif_msg_wol(sis_priv))
2116 printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name);
2121 static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol)
2123 struct sis900_private *sp = netdev_priv(net_dev);
2124 void __iomem *ioaddr = sp->ioaddr;
2127 pmctrl_bits = sr32(pmctrl);
2128 if (pmctrl_bits & MAGICPKT)
2129 wol->wolopts |= WAKE_MAGIC;
2130 if (pmctrl_bits & LINKON)
2131 wol->wolopts |= WAKE_PHY;
2133 wol->supported = (WAKE_PHY | WAKE_MAGIC);
2136 static int sis900_get_eeprom_len(struct net_device *dev)
2138 struct sis900_private *sis_priv = netdev_priv(dev);
2140 return sis_priv->eeprom_size;
2143 static int sis900_read_eeprom(struct net_device *net_dev, u8 *buf)
2145 struct sis900_private *sis_priv = netdev_priv(net_dev);
2146 void __iomem *ioaddr = sis_priv->ioaddr;
2147 int wait, ret = -EAGAIN;
2149 u16 *ebuf = (u16 *)buf;
2152 if (sis_priv->chipset_rev == SIS96x_900_REV) {
2154 for (wait = 0; wait < 2000; wait++) {
2155 if (sr32(mear) & EEGNT) {
2156 /* read 16 bits, and index by 16 bits */
2157 for (i = 0; i < sis_priv->eeprom_size / 2; i++)
2158 ebuf[i] = (u16)read_eeprom(ioaddr, i);
2166 signature = (u16)read_eeprom(ioaddr, EEPROMSignature);
2167 if (signature != 0xffff && signature != 0x0000) {
2168 /* read 16 bits, and index by 16 bits */
2169 for (i = 0; i < sis_priv->eeprom_size / 2; i++)
2170 ebuf[i] = (u16)read_eeprom(ioaddr, i);
2177 #define SIS900_EEPROM_MAGIC 0xBABE
2178 static int sis900_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data)
2180 struct sis900_private *sis_priv = netdev_priv(dev);
2184 eebuf = kmalloc(sis_priv->eeprom_size, GFP_KERNEL);
2188 eeprom->magic = SIS900_EEPROM_MAGIC;
2189 spin_lock_irq(&sis_priv->lock);
2190 res = sis900_read_eeprom(dev, eebuf);
2191 spin_unlock_irq(&sis_priv->lock);
2193 memcpy(data, eebuf + eeprom->offset, eeprom->len);
2198 static const struct ethtool_ops sis900_ethtool_ops = {
2199 .get_drvinfo = sis900_get_drvinfo,
2200 .get_msglevel = sis900_get_msglevel,
2201 .set_msglevel = sis900_set_msglevel,
2202 .get_link = sis900_get_link,
2203 .nway_reset = sis900_nway_reset,
2204 .get_wol = sis900_get_wol,
2205 .set_wol = sis900_set_wol,
2206 .get_link_ksettings = sis900_get_link_ksettings,
2207 .set_link_ksettings = sis900_set_link_ksettings,
2208 .get_eeprom_len = sis900_get_eeprom_len,
2209 .get_eeprom = sis900_get_eeprom,
2213 * mii_ioctl - process MII i/o control command
2214 * @net_dev: the net device to command for
2215 * @rq: parameter for command
2216 * @cmd: the i/o command
2218 * Process MII command like read/write MII register
2221 static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
2223 struct sis900_private *sis_priv = netdev_priv(net_dev);
2224 struct mii_ioctl_data *data = if_mii(rq);
2227 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2228 data->phy_id = sis_priv->mii->phy_addr;
2231 case SIOCGMIIREG: /* Read MII PHY register. */
2232 data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
2235 case SIOCSMIIREG: /* Write MII PHY register. */
2236 mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
2244 * sis900_set_config - Set media type by net_device.set_config
2245 * @dev: the net device for media type change
2246 * @map: ifmap passed by ifconfig
2248 * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig
2249 * we support only port changes. All other runtime configuration
2250 * changes will be ignored
2253 static int sis900_set_config(struct net_device *dev, struct ifmap *map)
2255 struct sis900_private *sis_priv = netdev_priv(dev);
2256 struct mii_phy *mii_phy = sis_priv->mii;
2260 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
2261 /* we switch on the ifmap->port field. I couldn't find anything
2262 * like a definition or standard for the values of that field.
2263 * I think the meaning of those values is device specific. But
2264 * since I would like to change the media type via the ifconfig
2265 * command I use the definition from linux/netdevice.h
2266 * (which seems to be different from the ifport(pcmcia) definition) */
2268 case IF_PORT_UNKNOWN: /* use auto here */
2269 dev->if_port = map->port;
2270 /* we are going to change the media type, so the Link
2271 * will be temporary down and we need to reflect that
2272 * here. When the Link comes up again, it will be
2273 * sensed by the sis_timer procedure, which also does
2274 * all the rest for us */
2275 netif_carrier_off(dev);
2277 /* read current state */
2278 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2280 /* enable auto negotiation and reset the negotioation
2281 * (I don't really know what the auto negatiotiation
2282 * reset really means, but it sounds for me right to
2284 mdio_write(dev, mii_phy->phy_addr,
2285 MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO);
2289 case IF_PORT_10BASET: /* 10BaseT */
2290 dev->if_port = map->port;
2292 /* we are going to change the media type, so the Link
2293 * will be temporary down and we need to reflect that
2294 * here. When the Link comes up again, it will be
2295 * sensed by the sis_timer procedure, which also does
2296 * all the rest for us */
2297 netif_carrier_off(dev);
2299 /* set Speed to 10Mbps */
2300 /* read current state */
2301 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2303 /* disable auto negotiation and force 10MBit mode*/
2304 mdio_write(dev, mii_phy->phy_addr,
2305 MII_CONTROL, status & ~(MII_CNTL_SPEED |
2309 case IF_PORT_100BASET: /* 100BaseT */
2310 case IF_PORT_100BASETX: /* 100BaseTx */
2311 dev->if_port = map->port;
2313 /* we are going to change the media type, so the Link
2314 * will be temporary down and we need to reflect that
2315 * here. When the Link comes up again, it will be
2316 * sensed by the sis_timer procedure, which also does
2317 * all the rest for us */
2318 netif_carrier_off(dev);
2320 /* set Speed to 100Mbps */
2321 /* disable auto negotiation and enable 100MBit Mode */
2322 status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL);
2323 mdio_write(dev, mii_phy->phy_addr,
2324 MII_CONTROL, (status & ~MII_CNTL_SPEED) |
2329 case IF_PORT_10BASE2: /* 10Base2 */
2330 case IF_PORT_AUI: /* AUI */
2331 case IF_PORT_100BASEFX: /* 100BaseFx */
2332 /* These Modes are not supported (are they?)*/
2343 * sis900_mcast_bitnr - compute hashtable index
2344 * @addr: multicast address
2345 * @revision: revision id of chip
2347 * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast
2348 * hash table, which makes this function a little bit different from other drivers
2349 * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits
2350 * multicast hash table.
2353 static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision)
2356 u32 crc = ether_crc(6, addr);
2358 /* leave 8 or 7 most siginifant bits */
2359 if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV))
2360 return (int)(crc >> 24);
2362 return (int)(crc >> 25);
2366 * set_rx_mode - Set SiS900 receive mode
2367 * @net_dev: the net device to be set
2369 * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode.
2370 * And set the appropriate multicast filter.
2371 * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0.
2374 static void set_rx_mode(struct net_device *net_dev)
2376 struct sis900_private *sis_priv = netdev_priv(net_dev);
2377 void __iomem *ioaddr = sis_priv->ioaddr;
2378 u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */
2379 int i, table_entries;
2382 /* 635 Hash Table entries = 256(2^16) */
2383 if((sis_priv->chipset_rev >= SIS635A_900_REV) ||
2384 (sis_priv->chipset_rev == SIS900B_900_REV))
2389 if (net_dev->flags & IFF_PROMISC) {
2390 /* Accept any kinds of packets */
2391 rx_mode = RFPromiscuous;
2392 for (i = 0; i < table_entries; i++)
2393 mc_filter[i] = 0xffff;
2394 } else if ((netdev_mc_count(net_dev) > multicast_filter_limit) ||
2395 (net_dev->flags & IFF_ALLMULTI)) {
2396 /* too many multicast addresses or accept all multicast packet */
2397 rx_mode = RFAAB | RFAAM;
2398 for (i = 0; i < table_entries; i++)
2399 mc_filter[i] = 0xffff;
2401 /* Accept Broadcast packet, destination address matchs our
2402 * MAC address, use Receive Filter to reject unwanted MCAST
2404 struct netdev_hw_addr *ha;
2407 netdev_for_each_mc_addr(ha, net_dev) {
2408 unsigned int bit_nr;
2410 bit_nr = sis900_mcast_bitnr(ha->addr,
2411 sis_priv->chipset_rev);
2412 mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf));
2416 /* update Multicast Hash Table in Receive Filter */
2417 for (i = 0; i < table_entries; i++) {
2418 /* why plus 0x04 ??, That makes the correct value for hash table. */
2419 sw32(rfcr, (u32)(0x00000004 + i) << RFADDR_shift);
2420 sw32(rfdr, mc_filter[i]);
2423 sw32(rfcr, RFEN | rx_mode);
2425 /* sis900 is capable of looping back packets at MAC level for
2426 * debugging purpose */
2427 if (net_dev->flags & IFF_LOOPBACK) {
2429 /* We must disable Tx/Rx before setting loopback mode */
2430 cr_saved = sr32(cr);
2431 sw32(cr, cr_saved | TxDIS | RxDIS);
2432 /* enable loopback */
2433 sw32(txcfg, sr32(txcfg) | TxMLB);
2434 sw32(rxcfg, sr32(rxcfg) | RxATX);
2441 * sis900_reset - Reset sis900 MAC
2442 * @net_dev: the net device to reset
2444 * reset sis900 MAC and wait until finished
2445 * reset through command register
2446 * change backoff algorithm for 900B0 & 635 M/B
2449 static void sis900_reset(struct net_device *net_dev)
2451 struct sis900_private *sis_priv = netdev_priv(net_dev);
2452 void __iomem *ioaddr = sis_priv->ioaddr;
2453 u32 status = TxRCMP | RxRCMP;
2460 sw32(cr, RxRESET | TxRESET | RESET | sr32(cr));
2462 /* Check that the chip has finished the reset. */
2463 for (i = 0; status && (i < 1000); i++)
2464 status ^= sr32(isr) & status;
2466 if (sis_priv->chipset_rev >= SIS635A_900_REV ||
2467 sis_priv->chipset_rev == SIS900B_900_REV)
2468 sw32(cfg, PESEL | RND_CNT);
2474 * sis900_remove - Remove sis900 device
2475 * @pci_dev: the pci device to be removed
2477 * remove and release SiS900 net device
2480 static void sis900_remove(struct pci_dev *pci_dev)
2482 struct net_device *net_dev = pci_get_drvdata(pci_dev);
2483 struct sis900_private *sis_priv = netdev_priv(net_dev);
2485 unregister_netdev(net_dev);
2487 while (sis_priv->first_mii) {
2488 struct mii_phy *phy = sis_priv->first_mii;
2490 sis_priv->first_mii = phy->next;
2494 dma_free_coherent(&pci_dev->dev, RX_TOTAL_SIZE, sis_priv->rx_ring,
2495 sis_priv->rx_ring_dma);
2496 dma_free_coherent(&pci_dev->dev, TX_TOTAL_SIZE, sis_priv->tx_ring,
2497 sis_priv->tx_ring_dma);
2498 pci_iounmap(pci_dev, sis_priv->ioaddr);
2499 free_netdev(net_dev);
2502 static int __maybe_unused sis900_suspend(struct device *dev)
2504 struct net_device *net_dev = dev_get_drvdata(dev);
2505 struct sis900_private *sis_priv = netdev_priv(net_dev);
2506 void __iomem *ioaddr = sis_priv->ioaddr;
2508 if(!netif_running(net_dev))
2511 netif_stop_queue(net_dev);
2512 netif_device_detach(net_dev);
2514 /* Stop the chip's Tx and Rx Status Machine */
2515 sw32(cr, RxDIS | TxDIS | sr32(cr));
2520 static int __maybe_unused sis900_resume(struct device *dev)
2522 struct net_device *net_dev = dev_get_drvdata(dev);
2523 struct sis900_private *sis_priv = netdev_priv(net_dev);
2524 void __iomem *ioaddr = sis_priv->ioaddr;
2526 if(!netif_running(net_dev))
2529 sis900_init_rxfilter(net_dev);
2531 sis900_init_tx_ring(net_dev);
2532 sis900_init_rx_ring(net_dev);
2534 set_rx_mode(net_dev);
2536 netif_device_attach(net_dev);
2537 netif_start_queue(net_dev);
2539 /* Workaround for EDB */
2540 sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
2542 /* Enable all known interrupts by setting the interrupt mask. */
2543 sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxDESC);
2544 sw32(cr, RxENA | sr32(cr));
2547 sis900_check_mode(net_dev, sis_priv->mii);
2552 static SIMPLE_DEV_PM_OPS(sis900_pm_ops, sis900_suspend, sis900_resume);
2554 static struct pci_driver sis900_pci_driver = {
2555 .name = SIS900_MODULE_NAME,
2556 .id_table = sis900_pci_tbl,
2557 .probe = sis900_probe,
2558 .remove = sis900_remove,
2559 .driver.pm = &sis900_pm_ops,
2562 static int __init sis900_init_module(void)
2564 /* when a module, this is printed whether or not devices are found in probe */
2569 return pci_register_driver(&sis900_pci_driver);
2572 static void __exit sis900_cleanup_module(void)
2574 pci_unregister_driver(&sis900_pci_driver);
2577 module_init(sis900_init_module);
2578 module_exit(sis900_cleanup_module);