Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux. |
| 2 | Copyright 1999 Silicon Integrated System Corporation |
Daniele Venzano | ea37cce | 2005-10-11 09:44:30 +0200 | [diff] [blame] | 3 | Revision: 1.08.09 Sep. 19 2005 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | |
| 5 | Modified from the driver which is originally written by Donald Becker. |
| 6 | |
| 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. |
| 11 | |
| 12 | References: |
| 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 |
| 19 | |
Daniele Venzano | ea37cce | 2005-10-11 09:44:30 +0200 | [diff] [blame] | 20 | Rev 1.08.09 Sep. 19 2005 Daniele Venzano add Wake on LAN support |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages |
| 22 | Rev 1.08.07 Nov. 2 2003 Daniele Venzano <webvenza@libero.it> add suspend/resume support |
| 23 | Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support |
| 24 | Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary |
| 25 | Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support |
| 26 | Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function |
| 27 | Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem |
| 28 | Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY |
| 29 | Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix |
| 30 | 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 |
| 31 | Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support |
| 32 | Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup |
| 33 | Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support |
| 34 | Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix |
| 35 | Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning |
| 36 | Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig |
| 37 | Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support |
| 38 | Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E eqaulizer workaround rule |
| 39 | Rev 1.07.01 Aug. 08 2000 Ollie Lho minor update for SiS 630E and SiS 630E A1 |
| 40 | Rev 1.07 Mar. 07 2000 Ollie Lho bug fix in Rx buffer ring |
| 41 | Rev 1.06.04 Feb. 11 2000 Jeff Garzik <jgarzik@pobox.com> softnet and init for kernel 2.4 |
| 42 | Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release |
| 43 | Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed |
| 44 | Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com) |
| 45 | Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release |
| 46 | Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx |
| 47 | Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support |
| 48 | Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release |
| 49 | */ |
| 50 | |
| 51 | #include <linux/module.h> |
| 52 | #include <linux/moduleparam.h> |
| 53 | #include <linux/kernel.h> |
| 54 | #include <linux/string.h> |
| 55 | #include <linux/timer.h> |
| 56 | #include <linux/errno.h> |
| 57 | #include <linux/ioport.h> |
| 58 | #include <linux/slab.h> |
| 59 | #include <linux/interrupt.h> |
| 60 | #include <linux/pci.h> |
| 61 | #include <linux/netdevice.h> |
| 62 | #include <linux/init.h> |
| 63 | #include <linux/mii.h> |
| 64 | #include <linux/etherdevice.h> |
| 65 | #include <linux/skbuff.h> |
| 66 | #include <linux/delay.h> |
| 67 | #include <linux/ethtool.h> |
| 68 | #include <linux/crc32.h> |
| 69 | #include <linux/bitops.h> |
Tobias Klauser | 12b279f | 2005-04-04 18:10:18 +0200 | [diff] [blame] | 70 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
| 72 | #include <asm/processor.h> /* Processor type for cache alignment. */ |
| 73 | #include <asm/io.h> |
| 74 | #include <asm/irq.h> |
| 75 | #include <asm/uaccess.h> /* User space memory access functions */ |
| 76 | |
| 77 | #include "sis900.h" |
| 78 | |
| 79 | #define SIS900_MODULE_NAME "sis900" |
Daniele Venzano | ea37cce | 2005-10-11 09:44:30 +0200 | [diff] [blame] | 80 | #define SIS900_DRV_VERSION "v1.08.09 Sep. 19 2005" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | static char version[] __devinitdata = |
| 83 | KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n"; |
| 84 | |
| 85 | static int max_interrupt_work = 40; |
| 86 | static int multicast_filter_limit = 128; |
| 87 | |
| 88 | static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */ |
| 89 | |
| 90 | #define SIS900_DEF_MSG \ |
| 91 | (NETIF_MSG_DRV | \ |
| 92 | NETIF_MSG_LINK | \ |
| 93 | NETIF_MSG_RX_ERR | \ |
| 94 | NETIF_MSG_TX_ERR) |
| 95 | |
| 96 | /* Time in jiffies before concluding the transmitter is hung. */ |
| 97 | #define TX_TIMEOUT (4*HZ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | |
| 99 | enum { |
| 100 | SIS_900 = 0, |
| 101 | SIS_7016 |
| 102 | }; |
| 103 | static char * card_names[] = { |
| 104 | "SiS 900 PCI Fast Ethernet", |
| 105 | "SiS 7016 PCI Fast Ethernet" |
| 106 | }; |
| 107 | static struct pci_device_id sis900_pci_tbl [] = { |
| 108 | {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900, |
| 109 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900}, |
| 110 | {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016, |
| 111 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016}, |
| 112 | {0,} |
| 113 | }; |
| 114 | MODULE_DEVICE_TABLE (pci, sis900_pci_tbl); |
| 115 | |
| 116 | static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex); |
| 117 | |
| 118 | static struct mii_chip_info { |
| 119 | const char * name; |
| 120 | u16 phy_id0; |
| 121 | u16 phy_id1; |
| 122 | u8 phy_types; |
| 123 | #define HOME 0x0001 |
| 124 | #define LAN 0x0002 |
| 125 | #define MIX 0x0003 |
| 126 | #define UNKNOWN 0x0 |
| 127 | } mii_chip_table[] = { |
| 128 | { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN }, |
| 129 | { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN }, |
| 130 | { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN }, |
| 131 | { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN }, |
| 132 | { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME}, |
| 133 | { "ICS LAN PHY", 0x0015, 0xF440, LAN }, |
| 134 | { "NS 83851 PHY", 0x2000, 0x5C20, MIX }, |
| 135 | { "NS 83847 PHY", 0x2000, 0x5C30, MIX }, |
| 136 | { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN }, |
| 137 | { "VIA 6103 PHY", 0x0101, 0x8f20, LAN }, |
| 138 | {NULL,}, |
| 139 | }; |
| 140 | |
| 141 | struct mii_phy { |
| 142 | struct mii_phy * next; |
| 143 | int phy_addr; |
| 144 | u16 phy_id0; |
| 145 | u16 phy_id1; |
| 146 | u16 status; |
| 147 | u8 phy_types; |
| 148 | }; |
| 149 | |
| 150 | typedef struct _BufferDesc { |
| 151 | u32 link; |
| 152 | u32 cmdsts; |
| 153 | u32 bufptr; |
| 154 | } BufferDesc; |
| 155 | |
| 156 | struct sis900_private { |
| 157 | struct net_device_stats stats; |
| 158 | struct pci_dev * pci_dev; |
| 159 | |
| 160 | spinlock_t lock; |
| 161 | |
| 162 | struct mii_phy * mii; |
| 163 | struct mii_phy * first_mii; /* record the first mii structure */ |
| 164 | unsigned int cur_phy; |
Daniele Venzano | da369b0 | 2005-05-12 20:13:14 -0400 | [diff] [blame] | 165 | struct mii_if_info mii_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
| 167 | struct timer_list timer; /* Link status detection timer. */ |
| 168 | u8 autong_complete; /* 1: auto-negotiate complete */ |
| 169 | |
| 170 | u32 msg_enable; |
| 171 | |
| 172 | unsigned int cur_rx, dirty_rx; /* producer/comsumer pointers for Tx/Rx ring */ |
| 173 | unsigned int cur_tx, dirty_tx; |
| 174 | |
| 175 | /* The saved address of a sent/receive-in-place packet buffer */ |
| 176 | struct sk_buff *tx_skbuff[NUM_TX_DESC]; |
| 177 | struct sk_buff *rx_skbuff[NUM_RX_DESC]; |
| 178 | BufferDesc *tx_ring; |
| 179 | BufferDesc *rx_ring; |
| 180 | |
| 181 | dma_addr_t tx_ring_dma; |
| 182 | dma_addr_t rx_ring_dma; |
| 183 | |
| 184 | unsigned int tx_full; /* The Tx queue is full. */ |
| 185 | u8 host_bridge_rev; |
| 186 | u8 chipset_rev; |
| 187 | }; |
| 188 | |
| 189 | MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>"); |
| 190 | MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver"); |
| 191 | MODULE_LICENSE("GPL"); |
| 192 | |
| 193 | module_param(multicast_filter_limit, int, 0444); |
| 194 | module_param(max_interrupt_work, int, 0444); |
| 195 | module_param(sis900_debug, int, 0444); |
| 196 | MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses"); |
| 197 | MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt"); |
| 198 | MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level"); |
| 199 | |
| 200 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 201 | static void sis900_poll(struct net_device *dev); |
| 202 | #endif |
| 203 | static int sis900_open(struct net_device *net_dev); |
| 204 | static int sis900_mii_probe (struct net_device * net_dev); |
| 205 | static void sis900_init_rxfilter (struct net_device * net_dev); |
| 206 | static u16 read_eeprom(long ioaddr, int location); |
Daniele Venzano | da369b0 | 2005-05-12 20:13:14 -0400 | [diff] [blame] | 207 | static int mdio_read(struct net_device *net_dev, int phy_id, int location); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val); |
| 209 | static void sis900_timer(unsigned long data); |
| 210 | static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy); |
| 211 | static void sis900_tx_timeout(struct net_device *net_dev); |
| 212 | static void sis900_init_tx_ring(struct net_device *net_dev); |
| 213 | static void sis900_init_rx_ring(struct net_device *net_dev); |
| 214 | static int sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev); |
| 215 | static int sis900_rx(struct net_device *net_dev); |
| 216 | static void sis900_finish_xmit (struct net_device *net_dev); |
| 217 | static irqreturn_t sis900_interrupt(int irq, void *dev_instance, struct pt_regs *regs); |
| 218 | static int sis900_close(struct net_device *net_dev); |
| 219 | static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd); |
| 220 | static struct net_device_stats *sis900_get_stats(struct net_device *net_dev); |
| 221 | static u16 sis900_mcast_bitnr(u8 *addr, u8 revision); |
| 222 | static void set_rx_mode(struct net_device *net_dev); |
| 223 | static void sis900_reset(struct net_device *net_dev); |
| 224 | static void sis630_set_eq(struct net_device *net_dev, u8 revision); |
| 225 | static int sis900_set_config(struct net_device *dev, struct ifmap *map); |
| 226 | static u16 sis900_default_phy(struct net_device * net_dev); |
| 227 | static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy); |
| 228 | static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr); |
| 229 | static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr); |
| 230 | static void sis900_set_mode (long ioaddr, int speed, int duplex); |
| 231 | static struct ethtool_ops sis900_ethtool_ops; |
| 232 | |
| 233 | /** |
| 234 | * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model |
| 235 | * @pci_dev: the sis900 pci device |
| 236 | * @net_dev: the net device to get address for |
| 237 | * |
| 238 | * Older SiS900 and friends, use EEPROM to store MAC address. |
| 239 | * MAC address is read from read_eeprom() into @net_dev->dev_addr. |
| 240 | */ |
| 241 | |
| 242 | static int __devinit sis900_get_mac_addr(struct pci_dev * pci_dev, struct net_device *net_dev) |
| 243 | { |
| 244 | long ioaddr = pci_resource_start(pci_dev, 0); |
| 245 | u16 signature; |
| 246 | int i; |
| 247 | |
| 248 | /* check to see if we have sane EEPROM */ |
| 249 | signature = (u16) read_eeprom(ioaddr, EEPROMSignature); |
| 250 | if (signature == 0xffff || signature == 0x0000) { |
| 251 | printk (KERN_WARNING "%s: Error EERPOM read %x\n", |
| 252 | pci_name(pci_dev), signature); |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | /* get MAC address from EEPROM */ |
| 257 | for (i = 0; i < 3; i++) |
| 258 | ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr); |
| 259 | |
| 260 | return 1; |
| 261 | } |
| 262 | |
| 263 | /** |
| 264 | * sis630e_get_mac_addr - Get MAC address for SiS630E model |
| 265 | * @pci_dev: the sis900 pci device |
| 266 | * @net_dev: the net device to get address for |
| 267 | * |
| 268 | * SiS630E model, use APC CMOS RAM to store MAC address. |
| 269 | * APC CMOS RAM is accessed through ISA bridge. |
| 270 | * MAC address is read into @net_dev->dev_addr. |
| 271 | */ |
| 272 | |
| 273 | static int __devinit sis630e_get_mac_addr(struct pci_dev * pci_dev, |
| 274 | struct net_device *net_dev) |
| 275 | { |
| 276 | struct pci_dev *isa_bridge = NULL; |
| 277 | u8 reg; |
| 278 | int i; |
| 279 | |
| 280 | isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge); |
| 281 | if (!isa_bridge) |
| 282 | isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge); |
| 283 | if (!isa_bridge) { |
| 284 | printk(KERN_WARNING "%s: Can not find ISA bridge\n", |
| 285 | pci_name(pci_dev)); |
| 286 | return 0; |
| 287 | } |
| 288 | pci_read_config_byte(isa_bridge, 0x48, ®); |
| 289 | pci_write_config_byte(isa_bridge, 0x48, reg | 0x40); |
| 290 | |
| 291 | for (i = 0; i < 6; i++) { |
| 292 | outb(0x09 + i, 0x70); |
| 293 | ((u8 *)(net_dev->dev_addr))[i] = inb(0x71); |
| 294 | } |
| 295 | pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40); |
| 296 | pci_dev_put(isa_bridge); |
| 297 | |
| 298 | return 1; |
| 299 | } |
| 300 | |
| 301 | |
| 302 | /** |
| 303 | * sis635_get_mac_addr - Get MAC address for SIS635 model |
| 304 | * @pci_dev: the sis900 pci device |
| 305 | * @net_dev: the net device to get address for |
| 306 | * |
| 307 | * SiS635 model, set MAC Reload Bit to load Mac address from APC |
| 308 | * to rfdr. rfdr is accessed through rfcr. MAC address is read into |
| 309 | * @net_dev->dev_addr. |
| 310 | */ |
| 311 | |
| 312 | static int __devinit sis635_get_mac_addr(struct pci_dev * pci_dev, |
| 313 | struct net_device *net_dev) |
| 314 | { |
| 315 | long ioaddr = net_dev->base_addr; |
| 316 | u32 rfcrSave; |
| 317 | u32 i; |
| 318 | |
| 319 | rfcrSave = inl(rfcr + ioaddr); |
| 320 | |
| 321 | outl(rfcrSave | RELOAD, ioaddr + cr); |
| 322 | outl(0, ioaddr + cr); |
| 323 | |
| 324 | /* disable packet filtering before setting filter */ |
| 325 | outl(rfcrSave & ~RFEN, rfcr + ioaddr); |
| 326 | |
| 327 | /* load MAC addr to filter data register */ |
| 328 | for (i = 0 ; i < 3 ; i++) { |
| 329 | outl((i << RFADDR_shift), ioaddr + rfcr); |
| 330 | *( ((u16 *)net_dev->dev_addr) + i) = inw(ioaddr + rfdr); |
| 331 | } |
| 332 | |
| 333 | /* enable packet filtering */ |
| 334 | outl(rfcrSave | RFEN, rfcr + ioaddr); |
| 335 | |
| 336 | return 1; |
| 337 | } |
| 338 | |
| 339 | /** |
| 340 | * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model |
| 341 | * @pci_dev: the sis900 pci device |
| 342 | * @net_dev: the net device to get address for |
| 343 | * |
| 344 | * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM |
| 345 | * is shared by |
| 346 | * LAN and 1394. When access EEPROM, send EEREQ signal to hardware first |
| 347 | * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be access |
| 348 | * by LAN, otherwise is not. After MAC address is read from EEPROM, send |
| 349 | * EEDONE signal to refuse EEPROM access by LAN. |
| 350 | * The EEPROM map of SiS962 or SiS963 is different to SiS900. |
| 351 | * The signature field in SiS962 or SiS963 spec is meaningless. |
| 352 | * MAC address is read into @net_dev->dev_addr. |
| 353 | */ |
| 354 | |
| 355 | static int __devinit sis96x_get_mac_addr(struct pci_dev * pci_dev, |
| 356 | struct net_device *net_dev) |
| 357 | { |
| 358 | long ioaddr = net_dev->base_addr; |
| 359 | long ee_addr = ioaddr + mear; |
| 360 | u32 waittime = 0; |
| 361 | int i; |
| 362 | |
| 363 | outl(EEREQ, ee_addr); |
| 364 | while(waittime < 2000) { |
| 365 | if(inl(ee_addr) & EEGNT) { |
| 366 | |
| 367 | /* get MAC address from EEPROM */ |
| 368 | for (i = 0; i < 3; i++) |
| 369 | ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr); |
| 370 | |
| 371 | outl(EEDONE, ee_addr); |
| 372 | return 1; |
| 373 | } else { |
| 374 | udelay(1); |
| 375 | waittime ++; |
| 376 | } |
| 377 | } |
| 378 | outl(EEDONE, ee_addr); |
| 379 | return 0; |
| 380 | } |
| 381 | |
| 382 | /** |
| 383 | * sis900_probe - Probe for sis900 device |
| 384 | * @pci_dev: the sis900 pci device |
| 385 | * @pci_id: the pci device ID |
| 386 | * |
| 387 | * Check and probe sis900 net device for @pci_dev. |
| 388 | * Get mac address according to the chip revision, |
| 389 | * and assign SiS900-specific entries in the device structure. |
| 390 | * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc. |
| 391 | */ |
| 392 | |
| 393 | static int __devinit sis900_probe(struct pci_dev *pci_dev, |
| 394 | const struct pci_device_id *pci_id) |
| 395 | { |
| 396 | struct sis900_private *sis_priv; |
| 397 | struct net_device *net_dev; |
| 398 | struct pci_dev *dev; |
| 399 | dma_addr_t ring_dma; |
| 400 | void *ring_space; |
| 401 | long ioaddr; |
| 402 | int i, ret; |
| 403 | char *card_name = card_names[pci_id->driver_data]; |
| 404 | const char *dev_name = pci_name(pci_dev); |
| 405 | |
| 406 | /* when built into the kernel, we only print version if device is found */ |
| 407 | #ifndef MODULE |
| 408 | static int printed_version; |
| 409 | if (!printed_version++) |
| 410 | printk(version); |
| 411 | #endif |
| 412 | |
| 413 | /* setup various bits in PCI command register */ |
| 414 | ret = pci_enable_device(pci_dev); |
| 415 | if(ret) return ret; |
| 416 | |
Tobias Klauser | 12b279f | 2005-04-04 18:10:18 +0200 | [diff] [blame] | 417 | i = pci_set_dma_mask(pci_dev, DMA_32BIT_MASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | if(i){ |
| 419 | printk(KERN_ERR "sis900.c: architecture does not support" |
| 420 | "32bit PCI busmaster DMA\n"); |
| 421 | return i; |
| 422 | } |
| 423 | |
| 424 | pci_set_master(pci_dev); |
| 425 | |
| 426 | net_dev = alloc_etherdev(sizeof(struct sis900_private)); |
| 427 | if (!net_dev) |
| 428 | return -ENOMEM; |
| 429 | SET_MODULE_OWNER(net_dev); |
| 430 | SET_NETDEV_DEV(net_dev, &pci_dev->dev); |
| 431 | |
| 432 | /* We do a request_region() to register /proc/ioports info. */ |
| 433 | ioaddr = pci_resource_start(pci_dev, 0); |
| 434 | ret = pci_request_regions(pci_dev, "sis900"); |
| 435 | if (ret) |
| 436 | goto err_out; |
| 437 | |
| 438 | sis_priv = net_dev->priv; |
| 439 | net_dev->base_addr = ioaddr; |
| 440 | net_dev->irq = pci_dev->irq; |
| 441 | sis_priv->pci_dev = pci_dev; |
| 442 | spin_lock_init(&sis_priv->lock); |
| 443 | |
| 444 | pci_set_drvdata(pci_dev, net_dev); |
| 445 | |
| 446 | ring_space = pci_alloc_consistent(pci_dev, TX_TOTAL_SIZE, &ring_dma); |
| 447 | if (!ring_space) { |
| 448 | ret = -ENOMEM; |
| 449 | goto err_out_cleardev; |
| 450 | } |
| 451 | sis_priv->tx_ring = (BufferDesc *)ring_space; |
| 452 | sis_priv->tx_ring_dma = ring_dma; |
| 453 | |
| 454 | ring_space = pci_alloc_consistent(pci_dev, RX_TOTAL_SIZE, &ring_dma); |
| 455 | if (!ring_space) { |
| 456 | ret = -ENOMEM; |
| 457 | goto err_unmap_tx; |
| 458 | } |
| 459 | sis_priv->rx_ring = (BufferDesc *)ring_space; |
| 460 | sis_priv->rx_ring_dma = ring_dma; |
| 461 | |
| 462 | /* The SiS900-specific entries in the device structure. */ |
| 463 | net_dev->open = &sis900_open; |
| 464 | net_dev->hard_start_xmit = &sis900_start_xmit; |
| 465 | net_dev->stop = &sis900_close; |
| 466 | net_dev->get_stats = &sis900_get_stats; |
| 467 | net_dev->set_config = &sis900_set_config; |
| 468 | net_dev->set_multicast_list = &set_rx_mode; |
| 469 | net_dev->do_ioctl = &mii_ioctl; |
| 470 | net_dev->tx_timeout = sis900_tx_timeout; |
| 471 | net_dev->watchdog_timeo = TX_TIMEOUT; |
| 472 | net_dev->ethtool_ops = &sis900_ethtool_ops; |
| 473 | |
| 474 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 475 | net_dev->poll_controller = &sis900_poll; |
| 476 | #endif |
| 477 | |
| 478 | if (sis900_debug > 0) |
| 479 | sis_priv->msg_enable = sis900_debug; |
| 480 | else |
| 481 | sis_priv->msg_enable = SIS900_DEF_MSG; |
Daniele Venzano | da369b0 | 2005-05-12 20:13:14 -0400 | [diff] [blame] | 482 | |
| 483 | sis_priv->mii_info.dev = net_dev; |
| 484 | sis_priv->mii_info.mdio_read = mdio_read; |
| 485 | sis_priv->mii_info.mdio_write = mdio_write; |
| 486 | sis_priv->mii_info.phy_id_mask = 0x1f; |
| 487 | sis_priv->mii_info.reg_num_mask = 0x1f; |
| 488 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | /* Get Mac address according to the chip revision */ |
| 490 | pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &(sis_priv->chipset_rev)); |
| 491 | if(netif_msg_probe(sis_priv)) |
| 492 | printk(KERN_DEBUG "%s: detected revision %2.2x, " |
| 493 | "trying to get MAC address...\n", |
| 494 | dev_name, sis_priv->chipset_rev); |
| 495 | |
| 496 | ret = 0; |
| 497 | if (sis_priv->chipset_rev == SIS630E_900_REV) |
| 498 | ret = sis630e_get_mac_addr(pci_dev, net_dev); |
| 499 | else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) ) |
| 500 | ret = sis635_get_mac_addr(pci_dev, net_dev); |
| 501 | else if (sis_priv->chipset_rev == SIS96x_900_REV) |
| 502 | ret = sis96x_get_mac_addr(pci_dev, net_dev); |
| 503 | else |
| 504 | ret = sis900_get_mac_addr(pci_dev, net_dev); |
| 505 | |
| 506 | if (ret == 0) { |
| 507 | printk(KERN_WARNING "%s: Cannot read MAC address.\n", dev_name); |
| 508 | ret = -ENODEV; |
| 509 | goto err_unmap_rx; |
| 510 | } |
| 511 | |
| 512 | /* 630ET : set the mii access mode as software-mode */ |
| 513 | if (sis_priv->chipset_rev == SIS630ET_900_REV) |
| 514 | outl(ACCESSMODE | inl(ioaddr + cr), ioaddr + cr); |
| 515 | |
| 516 | /* probe for mii transceiver */ |
| 517 | if (sis900_mii_probe(net_dev) == 0) { |
| 518 | printk(KERN_WARNING "%s: Error probing MII device.\n", |
| 519 | dev_name); |
| 520 | ret = -ENODEV; |
| 521 | goto err_unmap_rx; |
| 522 | } |
| 523 | |
| 524 | /* save our host bridge revision */ |
| 525 | dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL); |
| 526 | if (dev) { |
| 527 | pci_read_config_byte(dev, PCI_CLASS_REVISION, &sis_priv->host_bridge_rev); |
| 528 | pci_dev_put(dev); |
| 529 | } |
| 530 | |
| 531 | ret = register_netdev(net_dev); |
| 532 | if (ret) |
| 533 | goto err_unmap_rx; |
| 534 | |
| 535 | /* print some information about our NIC */ |
| 536 | printk(KERN_INFO "%s: %s at %#lx, IRQ %d, ", net_dev->name, |
| 537 | card_name, ioaddr, net_dev->irq); |
| 538 | for (i = 0; i < 5; i++) |
| 539 | printk("%2.2x:", (u8)net_dev->dev_addr[i]); |
| 540 | printk("%2.2x.\n", net_dev->dev_addr[i]); |
| 541 | |
Daniele Venzano | ea37cce | 2005-10-11 09:44:30 +0200 | [diff] [blame] | 542 | /* Detect Wake on Lan support */ |
| 543 | ret = inl(CFGPMC & PMESP); |
| 544 | if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0) |
| 545 | printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name); |
| 546 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | return 0; |
| 548 | |
| 549 | err_unmap_rx: |
| 550 | pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring, |
| 551 | sis_priv->rx_ring_dma); |
| 552 | err_unmap_tx: |
| 553 | pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring, |
| 554 | sis_priv->tx_ring_dma); |
| 555 | err_out_cleardev: |
| 556 | pci_set_drvdata(pci_dev, NULL); |
| 557 | pci_release_regions(pci_dev); |
| 558 | err_out: |
| 559 | free_netdev(net_dev); |
| 560 | return ret; |
| 561 | } |
| 562 | |
| 563 | /** |
| 564 | * sis900_mii_probe - Probe MII PHY for sis900 |
| 565 | * @net_dev: the net device to probe for |
| 566 | * |
| 567 | * Search for total of 32 possible mii phy addresses. |
| 568 | * Identify and set current phy if found one, |
| 569 | * return error if it failed to found. |
| 570 | */ |
| 571 | |
| 572 | static int __init sis900_mii_probe(struct net_device * net_dev) |
| 573 | { |
| 574 | struct sis900_private * sis_priv = net_dev->priv; |
| 575 | const char *dev_name = pci_name(sis_priv->pci_dev); |
| 576 | u16 poll_bit = MII_STAT_LINK, status = 0; |
| 577 | unsigned long timeout = jiffies + 5 * HZ; |
| 578 | int phy_addr; |
| 579 | |
| 580 | sis_priv->mii = NULL; |
| 581 | |
| 582 | /* search for total of 32 possible mii phy addresses */ |
| 583 | for (phy_addr = 0; phy_addr < 32; phy_addr++) { |
| 584 | struct mii_phy * mii_phy = NULL; |
| 585 | u16 mii_status; |
| 586 | int i; |
| 587 | |
| 588 | mii_phy = NULL; |
| 589 | for(i = 0; i < 2; i++) |
| 590 | mii_status = mdio_read(net_dev, phy_addr, MII_STATUS); |
| 591 | |
| 592 | if (mii_status == 0xffff || mii_status == 0x0000) { |
| 593 | if (netif_msg_probe(sis_priv)) |
| 594 | printk(KERN_DEBUG "%s: MII at address %d" |
| 595 | " not accessible\n", |
| 596 | dev_name, phy_addr); |
| 597 | continue; |
| 598 | } |
| 599 | |
| 600 | if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) { |
| 601 | printk(KERN_WARNING "Cannot allocate mem for struct mii_phy\n"); |
| 602 | mii_phy = sis_priv->first_mii; |
| 603 | while (mii_phy) { |
| 604 | struct mii_phy *phy; |
| 605 | phy = mii_phy; |
| 606 | mii_phy = mii_phy->next; |
| 607 | kfree(phy); |
| 608 | } |
| 609 | return 0; |
| 610 | } |
| 611 | |
| 612 | mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0); |
| 613 | mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1); |
| 614 | mii_phy->phy_addr = phy_addr; |
| 615 | mii_phy->status = mii_status; |
| 616 | mii_phy->next = sis_priv->mii; |
| 617 | sis_priv->mii = mii_phy; |
| 618 | sis_priv->first_mii = mii_phy; |
| 619 | |
| 620 | for (i = 0; mii_chip_table[i].phy_id1; i++) |
| 621 | if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) && |
| 622 | ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){ |
| 623 | mii_phy->phy_types = mii_chip_table[i].phy_types; |
| 624 | if (mii_chip_table[i].phy_types == MIX) |
| 625 | mii_phy->phy_types = |
| 626 | (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME; |
| 627 | printk(KERN_INFO "%s: %s transceiver found " |
| 628 | "at address %d.\n", |
| 629 | dev_name, |
| 630 | mii_chip_table[i].name, |
| 631 | phy_addr); |
| 632 | break; |
| 633 | } |
| 634 | |
| 635 | if( !mii_chip_table[i].phy_id1 ) { |
| 636 | printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n", |
| 637 | dev_name, phy_addr); |
| 638 | mii_phy->phy_types = UNKNOWN; |
| 639 | } |
| 640 | } |
| 641 | |
| 642 | if (sis_priv->mii == NULL) { |
| 643 | printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name); |
| 644 | return 0; |
| 645 | } |
| 646 | |
| 647 | /* select default PHY for mac */ |
| 648 | sis_priv->mii = NULL; |
| 649 | sis900_default_phy( net_dev ); |
| 650 | |
| 651 | /* Reset phy if default phy is internal sis900 */ |
| 652 | if ((sis_priv->mii->phy_id0 == 0x001D) && |
| 653 | ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000)) |
| 654 | status = sis900_reset_phy(net_dev, sis_priv->cur_phy); |
| 655 | |
| 656 | /* workaround for ICS1893 PHY */ |
| 657 | if ((sis_priv->mii->phy_id0 == 0x0015) && |
| 658 | ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440)) |
| 659 | mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200); |
| 660 | |
| 661 | if(status & MII_STAT_LINK){ |
| 662 | while (poll_bit) { |
| 663 | yield(); |
| 664 | |
| 665 | poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit); |
| 666 | if (time_after_eq(jiffies, timeout)) { |
| 667 | printk(KERN_WARNING "%s: reset phy and link down now\n", |
| 668 | dev_name); |
| 669 | return -ETIME; |
| 670 | } |
| 671 | } |
| 672 | } |
| 673 | |
| 674 | if (sis_priv->chipset_rev == SIS630E_900_REV) { |
| 675 | /* SiS 630E has some bugs on default value of PHY registers */ |
| 676 | mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1); |
| 677 | mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22); |
| 678 | mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00); |
| 679 | mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0); |
| 680 | //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000); |
| 681 | } |
| 682 | |
| 683 | if (sis_priv->mii->status & MII_STAT_LINK) |
| 684 | netif_carrier_on(net_dev); |
| 685 | else |
| 686 | netif_carrier_off(net_dev); |
| 687 | |
| 688 | return 1; |
| 689 | } |
| 690 | |
| 691 | /** |
| 692 | * sis900_default_phy - Select default PHY for sis900 mac. |
| 693 | * @net_dev: the net device to probe for |
| 694 | * |
| 695 | * Select first detected PHY with link as default. |
| 696 | * If no one is link on, select PHY whose types is HOME as default. |
| 697 | * If HOME doesn't exist, select LAN. |
| 698 | */ |
| 699 | |
| 700 | static u16 sis900_default_phy(struct net_device * net_dev) |
| 701 | { |
| 702 | struct sis900_private * sis_priv = net_dev->priv; |
| 703 | struct mii_phy *phy = NULL, *phy_home = NULL, |
| 704 | *default_phy = NULL, *phy_lan = NULL; |
| 705 | u16 status; |
| 706 | |
| 707 | for (phy=sis_priv->first_mii; phy; phy=phy->next) { |
| 708 | status = mdio_read(net_dev, phy->phy_addr, MII_STATUS); |
| 709 | status = mdio_read(net_dev, phy->phy_addr, MII_STATUS); |
| 710 | |
| 711 | /* Link ON & Not select default PHY & not ghost PHY */ |
| 712 | if ((status & MII_STAT_LINK) && !default_phy && |
| 713 | (phy->phy_types != UNKNOWN)) |
| 714 | default_phy = phy; |
| 715 | else { |
| 716 | status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL); |
| 717 | mdio_write(net_dev, phy->phy_addr, MII_CONTROL, |
| 718 | status | MII_CNTL_AUTO | MII_CNTL_ISOLATE); |
| 719 | if (phy->phy_types == HOME) |
| 720 | phy_home = phy; |
| 721 | else if(phy->phy_types == LAN) |
| 722 | phy_lan = phy; |
| 723 | } |
| 724 | } |
| 725 | |
| 726 | if (!default_phy && phy_home) |
| 727 | default_phy = phy_home; |
| 728 | else if (!default_phy && phy_lan) |
| 729 | default_phy = phy_lan; |
| 730 | else if (!default_phy) |
| 731 | default_phy = sis_priv->first_mii; |
| 732 | |
| 733 | if (sis_priv->mii != default_phy) { |
| 734 | sis_priv->mii = default_phy; |
| 735 | sis_priv->cur_phy = default_phy->phy_addr; |
| 736 | printk(KERN_INFO "%s: Using transceiver found at address %d as default\n", |
| 737 | pci_name(sis_priv->pci_dev), sis_priv->cur_phy); |
| 738 | } |
| 739 | |
Daniele Venzano | da369b0 | 2005-05-12 20:13:14 -0400 | [diff] [blame] | 740 | sis_priv->mii_info.phy_id = sis_priv->cur_phy; |
| 741 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL); |
| 743 | status &= (~MII_CNTL_ISOLATE); |
| 744 | |
| 745 | mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status); |
| 746 | status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS); |
| 747 | status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS); |
| 748 | |
| 749 | return status; |
| 750 | } |
| 751 | |
| 752 | |
| 753 | /** |
| 754 | * sis900_set_capability - set the media capability of network adapter. |
| 755 | * @net_dev : the net device to probe for |
| 756 | * @phy : default PHY |
| 757 | * |
| 758 | * Set the media capability of network adapter according to |
| 759 | * mii status register. It's necessary before auto-negotiate. |
| 760 | */ |
| 761 | |
| 762 | static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy) |
| 763 | { |
| 764 | u16 cap; |
| 765 | u16 status; |
| 766 | |
| 767 | status = mdio_read(net_dev, phy->phy_addr, MII_STATUS); |
| 768 | status = mdio_read(net_dev, phy->phy_addr, MII_STATUS); |
| 769 | |
| 770 | cap = MII_NWAY_CSMA_CD | |
| 771 | ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) | |
| 772 | ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) | |
| 773 | ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)| |
| 774 | ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0); |
| 775 | |
| 776 | mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap); |
| 777 | } |
| 778 | |
| 779 | |
| 780 | /* Delay between EEPROM clock transitions. */ |
| 781 | #define eeprom_delay() inl(ee_addr) |
| 782 | |
| 783 | /** |
| 784 | * read_eeprom - Read Serial EEPROM |
| 785 | * @ioaddr: base i/o address |
| 786 | * @location: the EEPROM location to read |
| 787 | * |
| 788 | * Read Serial EEPROM through EEPROM Access Register. |
| 789 | * Note that location is in word (16 bits) unit |
| 790 | */ |
| 791 | |
| 792 | static u16 __devinit read_eeprom(long ioaddr, int location) |
| 793 | { |
| 794 | int i; |
| 795 | u16 retval = 0; |
| 796 | long ee_addr = ioaddr + mear; |
| 797 | u32 read_cmd = location | EEread; |
| 798 | |
| 799 | outl(0, ee_addr); |
| 800 | eeprom_delay(); |
| 801 | outl(EECS, ee_addr); |
| 802 | eeprom_delay(); |
| 803 | |
| 804 | /* Shift the read command (9) bits out. */ |
| 805 | for (i = 8; i >= 0; i--) { |
| 806 | u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS; |
| 807 | outl(dataval, ee_addr); |
| 808 | eeprom_delay(); |
| 809 | outl(dataval | EECLK, ee_addr); |
| 810 | eeprom_delay(); |
| 811 | } |
| 812 | outl(EECS, ee_addr); |
| 813 | eeprom_delay(); |
| 814 | |
| 815 | /* read the 16-bits data in */ |
| 816 | for (i = 16; i > 0; i--) { |
| 817 | outl(EECS, ee_addr); |
| 818 | eeprom_delay(); |
| 819 | outl(EECS | EECLK, ee_addr); |
| 820 | eeprom_delay(); |
| 821 | retval = (retval << 1) | ((inl(ee_addr) & EEDO) ? 1 : 0); |
| 822 | eeprom_delay(); |
| 823 | } |
| 824 | |
| 825 | /* Terminate the EEPROM access. */ |
| 826 | outl(0, ee_addr); |
| 827 | eeprom_delay(); |
| 828 | |
| 829 | return (retval); |
| 830 | } |
| 831 | |
| 832 | /* Read and write the MII management registers using software-generated |
| 833 | serial MDIO protocol. Note that the command bits and data bits are |
| 834 | send out separately */ |
| 835 | #define mdio_delay() inl(mdio_addr) |
| 836 | |
| 837 | static void mdio_idle(long mdio_addr) |
| 838 | { |
| 839 | outl(MDIO | MDDIR, mdio_addr); |
| 840 | mdio_delay(); |
| 841 | outl(MDIO | MDDIR | MDC, mdio_addr); |
| 842 | } |
| 843 | |
| 844 | /* Syncronize the MII management interface by shifting 32 one bits out. */ |
| 845 | static void mdio_reset(long mdio_addr) |
| 846 | { |
| 847 | int i; |
| 848 | |
| 849 | for (i = 31; i >= 0; i--) { |
| 850 | outl(MDDIR | MDIO, mdio_addr); |
| 851 | mdio_delay(); |
| 852 | outl(MDDIR | MDIO | MDC, mdio_addr); |
| 853 | mdio_delay(); |
| 854 | } |
| 855 | return; |
| 856 | } |
| 857 | |
| 858 | /** |
| 859 | * mdio_read - read MII PHY register |
| 860 | * @net_dev: the net device to read |
| 861 | * @phy_id: the phy address to read |
| 862 | * @location: the phy regiester id to read |
| 863 | * |
| 864 | * Read MII registers through MDIO and MDC |
| 865 | * using MDIO management frame structure and protocol(defined by ISO/IEC). |
| 866 | * Please see SiS7014 or ICS spec |
| 867 | */ |
| 868 | |
Daniele Venzano | da369b0 | 2005-05-12 20:13:14 -0400 | [diff] [blame] | 869 | static int mdio_read(struct net_device *net_dev, int phy_id, int location) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | { |
| 871 | long mdio_addr = net_dev->base_addr + mear; |
| 872 | int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift); |
| 873 | u16 retval = 0; |
| 874 | int i; |
| 875 | |
| 876 | mdio_reset(mdio_addr); |
| 877 | mdio_idle(mdio_addr); |
| 878 | |
| 879 | for (i = 15; i >= 0; i--) { |
| 880 | int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR; |
| 881 | outl(dataval, mdio_addr); |
| 882 | mdio_delay(); |
| 883 | outl(dataval | MDC, mdio_addr); |
| 884 | mdio_delay(); |
| 885 | } |
| 886 | |
| 887 | /* Read the 16 data bits. */ |
| 888 | for (i = 16; i > 0; i--) { |
| 889 | outl(0, mdio_addr); |
| 890 | mdio_delay(); |
| 891 | retval = (retval << 1) | ((inl(mdio_addr) & MDIO) ? 1 : 0); |
| 892 | outl(MDC, mdio_addr); |
| 893 | mdio_delay(); |
| 894 | } |
| 895 | outl(0x00, mdio_addr); |
| 896 | |
| 897 | return retval; |
| 898 | } |
| 899 | |
| 900 | /** |
| 901 | * mdio_write - write MII PHY register |
| 902 | * @net_dev: the net device to write |
| 903 | * @phy_id: the phy address to write |
| 904 | * @location: the phy regiester id to write |
| 905 | * @value: the register value to write with |
| 906 | * |
| 907 | * Write MII registers with @value through MDIO and MDC |
| 908 | * using MDIO management frame structure and protocol(defined by ISO/IEC) |
| 909 | * please see SiS7014 or ICS spec |
| 910 | */ |
| 911 | |
| 912 | static void mdio_write(struct net_device *net_dev, int phy_id, int location, |
| 913 | int value) |
| 914 | { |
| 915 | long mdio_addr = net_dev->base_addr + mear; |
| 916 | int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift); |
| 917 | int i; |
| 918 | |
| 919 | mdio_reset(mdio_addr); |
| 920 | mdio_idle(mdio_addr); |
| 921 | |
| 922 | /* Shift the command bits out. */ |
| 923 | for (i = 15; i >= 0; i--) { |
| 924 | int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR; |
| 925 | outb(dataval, mdio_addr); |
| 926 | mdio_delay(); |
| 927 | outb(dataval | MDC, mdio_addr); |
| 928 | mdio_delay(); |
| 929 | } |
| 930 | mdio_delay(); |
| 931 | |
| 932 | /* Shift the value bits out. */ |
| 933 | for (i = 15; i >= 0; i--) { |
| 934 | int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR; |
| 935 | outl(dataval, mdio_addr); |
| 936 | mdio_delay(); |
| 937 | outl(dataval | MDC, mdio_addr); |
| 938 | mdio_delay(); |
| 939 | } |
| 940 | mdio_delay(); |
| 941 | |
| 942 | /* Clear out extra bits. */ |
| 943 | for (i = 2; i > 0; i--) { |
| 944 | outb(0, mdio_addr); |
| 945 | mdio_delay(); |
| 946 | outb(MDC, mdio_addr); |
| 947 | mdio_delay(); |
| 948 | } |
| 949 | outl(0x00, mdio_addr); |
| 950 | |
| 951 | return; |
| 952 | } |
| 953 | |
| 954 | |
| 955 | /** |
| 956 | * sis900_reset_phy - reset sis900 mii phy. |
| 957 | * @net_dev: the net device to write |
| 958 | * @phy_addr: default phy address |
| 959 | * |
| 960 | * Some specific phy can't work properly without reset. |
| 961 | * This function will be called during initialization and |
| 962 | * link status change from ON to DOWN. |
| 963 | */ |
| 964 | |
| 965 | static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr) |
| 966 | { |
| 967 | int i = 0; |
| 968 | u16 status; |
| 969 | |
| 970 | while (i++ < 2) |
| 971 | status = mdio_read(net_dev, phy_addr, MII_STATUS); |
| 972 | |
| 973 | mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET ); |
| 974 | |
| 975 | return status; |
| 976 | } |
| 977 | |
| 978 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 979 | /* |
| 980 | * Polling 'interrupt' - used by things like netconsole to send skbs |
| 981 | * without having to re-enable interrupts. It's not called while |
| 982 | * the interrupt routine is executing. |
| 983 | */ |
| 984 | static void sis900_poll(struct net_device *dev) |
| 985 | { |
| 986 | disable_irq(dev->irq); |
| 987 | sis900_interrupt(dev->irq, dev, NULL); |
| 988 | enable_irq(dev->irq); |
| 989 | } |
| 990 | #endif |
| 991 | |
| 992 | /** |
| 993 | * sis900_open - open sis900 device |
| 994 | * @net_dev: the net device to open |
| 995 | * |
| 996 | * Do some initialization and start net interface. |
| 997 | * enable interrupts and set sis900 timer. |
| 998 | */ |
| 999 | |
| 1000 | static int |
| 1001 | sis900_open(struct net_device *net_dev) |
| 1002 | { |
| 1003 | struct sis900_private *sis_priv = net_dev->priv; |
| 1004 | long ioaddr = net_dev->base_addr; |
| 1005 | int ret; |
| 1006 | |
| 1007 | /* Soft reset the chip. */ |
| 1008 | sis900_reset(net_dev); |
| 1009 | |
| 1010 | /* Equalizer workaround Rule */ |
| 1011 | sis630_set_eq(net_dev, sis_priv->chipset_rev); |
| 1012 | |
| 1013 | ret = request_irq(net_dev->irq, &sis900_interrupt, SA_SHIRQ, |
| 1014 | net_dev->name, net_dev); |
| 1015 | if (ret) |
| 1016 | return ret; |
| 1017 | |
| 1018 | sis900_init_rxfilter(net_dev); |
| 1019 | |
| 1020 | sis900_init_tx_ring(net_dev); |
| 1021 | sis900_init_rx_ring(net_dev); |
| 1022 | |
| 1023 | set_rx_mode(net_dev); |
| 1024 | |
| 1025 | netif_start_queue(net_dev); |
| 1026 | |
| 1027 | /* Workaround for EDB */ |
| 1028 | sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED); |
| 1029 | |
| 1030 | /* Enable all known interrupts by setting the interrupt mask. */ |
| 1031 | outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr); |
| 1032 | outl(RxENA | inl(ioaddr + cr), ioaddr + cr); |
| 1033 | outl(IE, ioaddr + ier); |
| 1034 | |
| 1035 | sis900_check_mode(net_dev, sis_priv->mii); |
| 1036 | |
| 1037 | /* Set the timer to switch to check for link beat and perhaps switch |
| 1038 | to an alternate media type. */ |
| 1039 | init_timer(&sis_priv->timer); |
| 1040 | sis_priv->timer.expires = jiffies + HZ; |
| 1041 | sis_priv->timer.data = (unsigned long)net_dev; |
| 1042 | sis_priv->timer.function = &sis900_timer; |
| 1043 | add_timer(&sis_priv->timer); |
| 1044 | |
| 1045 | return 0; |
| 1046 | } |
| 1047 | |
| 1048 | /** |
| 1049 | * sis900_init_rxfilter - Initialize the Rx filter |
| 1050 | * @net_dev: the net device to initialize for |
| 1051 | * |
| 1052 | * Set receive filter address to our MAC address |
| 1053 | * and enable packet filtering. |
| 1054 | */ |
| 1055 | |
| 1056 | static void |
| 1057 | sis900_init_rxfilter (struct net_device * net_dev) |
| 1058 | { |
| 1059 | struct sis900_private *sis_priv = net_dev->priv; |
| 1060 | long ioaddr = net_dev->base_addr; |
| 1061 | u32 rfcrSave; |
| 1062 | u32 i; |
| 1063 | |
| 1064 | rfcrSave = inl(rfcr + ioaddr); |
| 1065 | |
| 1066 | /* disable packet filtering before setting filter */ |
| 1067 | outl(rfcrSave & ~RFEN, rfcr + ioaddr); |
| 1068 | |
| 1069 | /* load MAC addr to filter data register */ |
| 1070 | for (i = 0 ; i < 3 ; i++) { |
| 1071 | u32 w; |
| 1072 | |
| 1073 | w = (u32) *((u16 *)(net_dev->dev_addr)+i); |
| 1074 | outl((i << RFADDR_shift), ioaddr + rfcr); |
| 1075 | outl(w, ioaddr + rfdr); |
| 1076 | |
| 1077 | if (netif_msg_hw(sis_priv)) { |
| 1078 | printk(KERN_DEBUG "%s: Receive Filter Addrss[%d]=%x\n", |
| 1079 | net_dev->name, i, inl(ioaddr + rfdr)); |
| 1080 | } |
| 1081 | } |
| 1082 | |
| 1083 | /* enable packet filtering */ |
| 1084 | outl(rfcrSave | RFEN, rfcr + ioaddr); |
| 1085 | } |
| 1086 | |
| 1087 | /** |
| 1088 | * sis900_init_tx_ring - Initialize the Tx descriptor ring |
| 1089 | * @net_dev: the net device to initialize for |
| 1090 | * |
| 1091 | * Initialize the Tx descriptor ring, |
| 1092 | */ |
| 1093 | |
| 1094 | static void |
| 1095 | sis900_init_tx_ring(struct net_device *net_dev) |
| 1096 | { |
| 1097 | struct sis900_private *sis_priv = net_dev->priv; |
| 1098 | long ioaddr = net_dev->base_addr; |
| 1099 | int i; |
| 1100 | |
| 1101 | sis_priv->tx_full = 0; |
| 1102 | sis_priv->dirty_tx = sis_priv->cur_tx = 0; |
| 1103 | |
| 1104 | for (i = 0; i < NUM_TX_DESC; i++) { |
| 1105 | sis_priv->tx_skbuff[i] = NULL; |
| 1106 | |
| 1107 | sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma + |
| 1108 | ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc); |
| 1109 | sis_priv->tx_ring[i].cmdsts = 0; |
| 1110 | sis_priv->tx_ring[i].bufptr = 0; |
| 1111 | } |
| 1112 | |
| 1113 | /* load Transmit Descriptor Register */ |
| 1114 | outl(sis_priv->tx_ring_dma, ioaddr + txdp); |
| 1115 | if (netif_msg_hw(sis_priv)) |
| 1116 | printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n", |
| 1117 | net_dev->name, inl(ioaddr + txdp)); |
| 1118 | } |
| 1119 | |
| 1120 | /** |
| 1121 | * sis900_init_rx_ring - Initialize the Rx descriptor ring |
| 1122 | * @net_dev: the net device to initialize for |
| 1123 | * |
| 1124 | * Initialize the Rx descriptor ring, |
| 1125 | * and pre-allocate recevie buffers (socket buffer) |
| 1126 | */ |
| 1127 | |
| 1128 | static void |
| 1129 | sis900_init_rx_ring(struct net_device *net_dev) |
| 1130 | { |
| 1131 | struct sis900_private *sis_priv = net_dev->priv; |
| 1132 | long ioaddr = net_dev->base_addr; |
| 1133 | int i; |
| 1134 | |
| 1135 | sis_priv->cur_rx = 0; |
| 1136 | sis_priv->dirty_rx = 0; |
| 1137 | |
| 1138 | /* init RX descriptor */ |
| 1139 | for (i = 0; i < NUM_RX_DESC; i++) { |
| 1140 | sis_priv->rx_skbuff[i] = NULL; |
| 1141 | |
| 1142 | sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma + |
| 1143 | ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc); |
| 1144 | sis_priv->rx_ring[i].cmdsts = 0; |
| 1145 | sis_priv->rx_ring[i].bufptr = 0; |
| 1146 | } |
| 1147 | |
| 1148 | /* allocate sock buffers */ |
| 1149 | for (i = 0; i < NUM_RX_DESC; i++) { |
| 1150 | struct sk_buff *skb; |
| 1151 | |
| 1152 | if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) { |
| 1153 | /* not enough memory for skbuff, this makes a "hole" |
| 1154 | on the buffer ring, it is not clear how the |
| 1155 | hardware will react to this kind of degenerated |
| 1156 | buffer */ |
| 1157 | break; |
| 1158 | } |
| 1159 | skb->dev = net_dev; |
| 1160 | sis_priv->rx_skbuff[i] = skb; |
| 1161 | sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE; |
| 1162 | sis_priv->rx_ring[i].bufptr = pci_map_single(sis_priv->pci_dev, |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1163 | skb->data, RX_BUF_SIZE, PCI_DMA_FROMDEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | } |
| 1165 | sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC); |
| 1166 | |
| 1167 | /* load Receive Descriptor Register */ |
| 1168 | outl(sis_priv->rx_ring_dma, ioaddr + rxdp); |
| 1169 | if (netif_msg_hw(sis_priv)) |
| 1170 | printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n", |
| 1171 | net_dev->name, inl(ioaddr + rxdp)); |
| 1172 | } |
| 1173 | |
| 1174 | /** |
| 1175 | * sis630_set_eq - set phy equalizer value for 630 LAN |
| 1176 | * @net_dev: the net device to set equalizer value |
| 1177 | * @revision: 630 LAN revision number |
| 1178 | * |
| 1179 | * 630E equalizer workaround rule(Cyrus Huang 08/15) |
| 1180 | * PHY register 14h(Test) |
| 1181 | * Bit 14: 0 -- Automatically dectect (default) |
| 1182 | * 1 -- Manually set Equalizer filter |
| 1183 | * Bit 13: 0 -- (Default) |
| 1184 | * 1 -- Speed up convergence of equalizer setting |
| 1185 | * Bit 9 : 0 -- (Default) |
| 1186 | * 1 -- Disable Baseline Wander |
| 1187 | * Bit 3~7 -- Equalizer filter setting |
| 1188 | * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0 |
| 1189 | * Then calculate equalizer value |
| 1190 | * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0 |
| 1191 | * Link Off:Set Bit 13 to 1, Bit 14 to 0 |
| 1192 | * Calculate Equalizer value: |
| 1193 | * When Link is ON and Bit 14 is 0, SIS900PHY will auto-dectect proper equalizer value. |
| 1194 | * When the equalizer is stable, this value is not a fixed value. It will be within |
| 1195 | * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9) |
| 1196 | * 0 <= max <= 4 --> set equalizer to max |
| 1197 | * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min |
| 1198 | * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min |
| 1199 | */ |
| 1200 | |
| 1201 | static void sis630_set_eq(struct net_device *net_dev, u8 revision) |
| 1202 | { |
| 1203 | struct sis900_private *sis_priv = net_dev->priv; |
| 1204 | u16 reg14h, eq_value=0, max_value=0, min_value=0; |
| 1205 | int i, maxcount=10; |
| 1206 | |
| 1207 | if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV || |
| 1208 | revision == SIS630A_900_REV || revision == SIS630ET_900_REV) ) |
| 1209 | return; |
| 1210 | |
| 1211 | if (netif_carrier_ok(net_dev)) { |
| 1212 | reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV); |
| 1213 | mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, |
| 1214 | (0x2200 | reg14h) & 0xBFFF); |
| 1215 | for (i=0; i < maxcount; i++) { |
| 1216 | eq_value = (0x00F8 & mdio_read(net_dev, |
| 1217 | sis_priv->cur_phy, MII_RESV)) >> 3; |
| 1218 | if (i == 0) |
| 1219 | max_value=min_value=eq_value; |
| 1220 | max_value = (eq_value > max_value) ? |
| 1221 | eq_value : max_value; |
| 1222 | min_value = (eq_value < min_value) ? |
| 1223 | eq_value : min_value; |
| 1224 | } |
| 1225 | /* 630E rule to determine the equalizer value */ |
| 1226 | if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV || |
| 1227 | revision == SIS630ET_900_REV) { |
| 1228 | if (max_value < 5) |
| 1229 | eq_value = max_value; |
| 1230 | else if (max_value >= 5 && max_value < 15) |
| 1231 | eq_value = (max_value == min_value) ? |
| 1232 | max_value+2 : max_value+1; |
| 1233 | else if (max_value >= 15) |
| 1234 | eq_value=(max_value == min_value) ? |
| 1235 | max_value+6 : max_value+5; |
| 1236 | } |
| 1237 | /* 630B0&B1 rule to determine the equalizer value */ |
| 1238 | if (revision == SIS630A_900_REV && |
| 1239 | (sis_priv->host_bridge_rev == SIS630B0 || |
| 1240 | sis_priv->host_bridge_rev == SIS630B1)) { |
| 1241 | if (max_value == 0) |
| 1242 | eq_value = 3; |
| 1243 | else |
| 1244 | eq_value = (max_value + min_value + 1)/2; |
| 1245 | } |
| 1246 | /* write equalizer value and setting */ |
| 1247 | reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV); |
| 1248 | reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8); |
| 1249 | reg14h = (reg14h | 0x6000) & 0xFDFF; |
| 1250 | mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h); |
| 1251 | } else { |
| 1252 | reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV); |
| 1253 | if (revision == SIS630A_900_REV && |
| 1254 | (sis_priv->host_bridge_rev == SIS630B0 || |
| 1255 | sis_priv->host_bridge_rev == SIS630B1)) |
| 1256 | mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, |
| 1257 | (reg14h | 0x2200) & 0xBFFF); |
| 1258 | else |
| 1259 | mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, |
| 1260 | (reg14h | 0x2000) & 0xBFFF); |
| 1261 | } |
| 1262 | return; |
| 1263 | } |
| 1264 | |
| 1265 | /** |
| 1266 | * sis900_timer - sis900 timer routine |
| 1267 | * @data: pointer to sis900 net device |
| 1268 | * |
| 1269 | * On each timer ticks we check two things, |
| 1270 | * link status (ON/OFF) and link mode (10/100/Full/Half) |
| 1271 | */ |
| 1272 | |
| 1273 | static void sis900_timer(unsigned long data) |
| 1274 | { |
| 1275 | struct net_device *net_dev = (struct net_device *)data; |
| 1276 | struct sis900_private *sis_priv = net_dev->priv; |
| 1277 | struct mii_phy *mii_phy = sis_priv->mii; |
| 1278 | static int next_tick = 5*HZ; |
| 1279 | u16 status; |
| 1280 | |
| 1281 | if (!sis_priv->autong_complete){ |
| 1282 | int speed, duplex = 0; |
| 1283 | |
| 1284 | sis900_read_mode(net_dev, &speed, &duplex); |
| 1285 | if (duplex){ |
| 1286 | sis900_set_mode(net_dev->base_addr, speed, duplex); |
| 1287 | sis630_set_eq(net_dev, sis_priv->chipset_rev); |
| 1288 | netif_start_queue(net_dev); |
| 1289 | } |
| 1290 | |
| 1291 | sis_priv->timer.expires = jiffies + HZ; |
| 1292 | add_timer(&sis_priv->timer); |
| 1293 | return; |
| 1294 | } |
| 1295 | |
| 1296 | status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS); |
| 1297 | status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS); |
| 1298 | |
| 1299 | /* Link OFF -> ON */ |
| 1300 | if (!netif_carrier_ok(net_dev)) { |
| 1301 | LookForLink: |
| 1302 | /* Search for new PHY */ |
| 1303 | status = sis900_default_phy(net_dev); |
| 1304 | mii_phy = sis_priv->mii; |
| 1305 | |
| 1306 | if (status & MII_STAT_LINK){ |
| 1307 | sis900_check_mode(net_dev, mii_phy); |
| 1308 | netif_carrier_on(net_dev); |
| 1309 | } |
| 1310 | } else { |
| 1311 | /* Link ON -> OFF */ |
| 1312 | if (!(status & MII_STAT_LINK)){ |
| 1313 | netif_carrier_off(net_dev); |
| 1314 | if(netif_msg_link(sis_priv)) |
| 1315 | printk(KERN_INFO "%s: Media Link Off\n", net_dev->name); |
| 1316 | |
| 1317 | /* Change mode issue */ |
| 1318 | if ((mii_phy->phy_id0 == 0x001D) && |
| 1319 | ((mii_phy->phy_id1 & 0xFFF0) == 0x8000)) |
| 1320 | sis900_reset_phy(net_dev, sis_priv->cur_phy); |
| 1321 | |
| 1322 | sis630_set_eq(net_dev, sis_priv->chipset_rev); |
| 1323 | |
| 1324 | goto LookForLink; |
| 1325 | } |
| 1326 | } |
| 1327 | |
| 1328 | sis_priv->timer.expires = jiffies + next_tick; |
| 1329 | add_timer(&sis_priv->timer); |
| 1330 | } |
| 1331 | |
| 1332 | /** |
| 1333 | * sis900_check_mode - check the media mode for sis900 |
| 1334 | * @net_dev: the net device to be checked |
| 1335 | * @mii_phy: the mii phy |
| 1336 | * |
| 1337 | * Older driver gets the media mode from mii status output |
| 1338 | * register. Now we set our media capability and auto-negotiate |
| 1339 | * to get the upper bound of speed and duplex between two ends. |
| 1340 | * If the types of mii phy is HOME, it doesn't need to auto-negotiate |
| 1341 | * and autong_complete should be set to 1. |
| 1342 | */ |
| 1343 | |
| 1344 | static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy) |
| 1345 | { |
| 1346 | struct sis900_private *sis_priv = net_dev->priv; |
| 1347 | long ioaddr = net_dev->base_addr; |
| 1348 | int speed, duplex; |
| 1349 | |
| 1350 | if (mii_phy->phy_types == LAN) { |
| 1351 | outl(~EXD & inl(ioaddr + cfg), ioaddr + cfg); |
| 1352 | sis900_set_capability(net_dev , mii_phy); |
| 1353 | sis900_auto_negotiate(net_dev, sis_priv->cur_phy); |
| 1354 | } else { |
| 1355 | outl(EXD | inl(ioaddr + cfg), ioaddr + cfg); |
| 1356 | speed = HW_SPEED_HOME; |
| 1357 | duplex = FDX_CAPABLE_HALF_SELECTED; |
| 1358 | sis900_set_mode(ioaddr, speed, duplex); |
| 1359 | sis_priv->autong_complete = 1; |
| 1360 | } |
| 1361 | } |
| 1362 | |
| 1363 | /** |
| 1364 | * sis900_set_mode - Set the media mode of mac register. |
| 1365 | * @ioaddr: the address of the device |
| 1366 | * @speed : the transmit speed to be determined |
| 1367 | * @duplex: the duplex mode to be determined |
| 1368 | * |
| 1369 | * Set the media mode of mac register txcfg/rxcfg according to |
| 1370 | * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB |
| 1371 | * bus is used instead of PCI bus. When this bit is set 1, the |
| 1372 | * Max DMA Burst Size for TX/RX DMA should be no larger than 16 |
| 1373 | * double words. |
| 1374 | */ |
| 1375 | |
| 1376 | static void sis900_set_mode (long ioaddr, int speed, int duplex) |
| 1377 | { |
| 1378 | u32 tx_flags = 0, rx_flags = 0; |
| 1379 | |
| 1380 | if (inl(ioaddr + cfg) & EDB_MASTER_EN) { |
| 1381 | tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) | |
| 1382 | (TX_FILL_THRESH << TxFILLT_shift); |
| 1383 | rx_flags = DMA_BURST_64 << RxMXDMA_shift; |
| 1384 | } else { |
| 1385 | tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) | |
| 1386 | (TX_FILL_THRESH << TxFILLT_shift); |
| 1387 | rx_flags = DMA_BURST_512 << RxMXDMA_shift; |
| 1388 | } |
| 1389 | |
| 1390 | if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) { |
| 1391 | rx_flags |= (RxDRNT_10 << RxDRNT_shift); |
| 1392 | tx_flags |= (TxDRNT_10 << TxDRNT_shift); |
| 1393 | } else { |
| 1394 | rx_flags |= (RxDRNT_100 << RxDRNT_shift); |
| 1395 | tx_flags |= (TxDRNT_100 << TxDRNT_shift); |
| 1396 | } |
| 1397 | |
| 1398 | if (duplex == FDX_CAPABLE_FULL_SELECTED) { |
| 1399 | tx_flags |= (TxCSI | TxHBI); |
| 1400 | rx_flags |= RxATX; |
| 1401 | } |
| 1402 | |
| 1403 | outl (tx_flags, ioaddr + txcfg); |
| 1404 | outl (rx_flags, ioaddr + rxcfg); |
| 1405 | } |
| 1406 | |
| 1407 | /** |
| 1408 | * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit. |
| 1409 | * @net_dev: the net device to read mode for |
| 1410 | * @phy_addr: mii phy address |
| 1411 | * |
| 1412 | * If the adapter is link-on, set the auto-negotiate enable/reset bit. |
| 1413 | * autong_complete should be set to 0 when starting auto-negotiation. |
| 1414 | * autong_complete should be set to 1 if we didn't start auto-negotiation. |
| 1415 | * sis900_timer will wait for link on again if autong_complete = 0. |
| 1416 | */ |
| 1417 | |
| 1418 | static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr) |
| 1419 | { |
| 1420 | struct sis900_private *sis_priv = net_dev->priv; |
| 1421 | int i = 0; |
| 1422 | u32 status; |
| 1423 | |
| 1424 | while (i++ < 2) |
| 1425 | status = mdio_read(net_dev, phy_addr, MII_STATUS); |
| 1426 | |
| 1427 | if (!(status & MII_STAT_LINK)){ |
| 1428 | if(netif_msg_link(sis_priv)) |
| 1429 | printk(KERN_INFO "%s: Media Link Off\n", net_dev->name); |
| 1430 | sis_priv->autong_complete = 1; |
| 1431 | netif_carrier_off(net_dev); |
| 1432 | return; |
| 1433 | } |
| 1434 | |
| 1435 | /* (Re)start AutoNegotiate */ |
| 1436 | mdio_write(net_dev, phy_addr, MII_CONTROL, |
| 1437 | MII_CNTL_AUTO | MII_CNTL_RST_AUTO); |
| 1438 | sis_priv->autong_complete = 0; |
| 1439 | } |
| 1440 | |
| 1441 | |
| 1442 | /** |
| 1443 | * sis900_read_mode - read media mode for sis900 internal phy |
| 1444 | * @net_dev: the net device to read mode for |
| 1445 | * @speed : the transmit speed to be determined |
| 1446 | * @duplex : the duplex mode to be determined |
| 1447 | * |
| 1448 | * The capability of remote end will be put in mii register autorec |
| 1449 | * after auto-negotiation. Use AND operation to get the upper bound |
| 1450 | * of speed and duplex between two ends. |
| 1451 | */ |
| 1452 | |
| 1453 | static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex) |
| 1454 | { |
| 1455 | struct sis900_private *sis_priv = net_dev->priv; |
| 1456 | struct mii_phy *phy = sis_priv->mii; |
| 1457 | int phy_addr = sis_priv->cur_phy; |
| 1458 | u32 status; |
| 1459 | u16 autoadv, autorec; |
| 1460 | int i = 0; |
| 1461 | |
| 1462 | while (i++ < 2) |
| 1463 | status = mdio_read(net_dev, phy_addr, MII_STATUS); |
| 1464 | |
| 1465 | if (!(status & MII_STAT_LINK)) |
| 1466 | return; |
| 1467 | |
| 1468 | /* AutoNegotiate completed */ |
| 1469 | autoadv = mdio_read(net_dev, phy_addr, MII_ANADV); |
| 1470 | autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR); |
| 1471 | status = autoadv & autorec; |
| 1472 | |
| 1473 | *speed = HW_SPEED_10_MBPS; |
| 1474 | *duplex = FDX_CAPABLE_HALF_SELECTED; |
| 1475 | |
| 1476 | if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX)) |
| 1477 | *speed = HW_SPEED_100_MBPS; |
| 1478 | if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX)) |
| 1479 | *duplex = FDX_CAPABLE_FULL_SELECTED; |
| 1480 | |
| 1481 | sis_priv->autong_complete = 1; |
| 1482 | |
| 1483 | /* Workaround for Realtek RTL8201 PHY issue */ |
| 1484 | if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) { |
| 1485 | if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX) |
| 1486 | *duplex = FDX_CAPABLE_FULL_SELECTED; |
| 1487 | if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01) |
| 1488 | *speed = HW_SPEED_100_MBPS; |
| 1489 | } |
| 1490 | |
| 1491 | if(netif_msg_link(sis_priv)) |
| 1492 | printk(KERN_INFO "%s: Media Link On %s %s-duplex \n", |
| 1493 | net_dev->name, |
| 1494 | *speed == HW_SPEED_100_MBPS ? |
| 1495 | "100mbps" : "10mbps", |
| 1496 | *duplex == FDX_CAPABLE_FULL_SELECTED ? |
| 1497 | "full" : "half"); |
| 1498 | } |
| 1499 | |
| 1500 | /** |
| 1501 | * sis900_tx_timeout - sis900 transmit timeout routine |
| 1502 | * @net_dev: the net device to transmit |
| 1503 | * |
| 1504 | * print transmit timeout status |
| 1505 | * disable interrupts and do some tasks |
| 1506 | */ |
| 1507 | |
| 1508 | static void sis900_tx_timeout(struct net_device *net_dev) |
| 1509 | { |
| 1510 | struct sis900_private *sis_priv = net_dev->priv; |
| 1511 | long ioaddr = net_dev->base_addr; |
| 1512 | unsigned long flags; |
| 1513 | int i; |
| 1514 | |
| 1515 | if(netif_msg_tx_err(sis_priv)) |
| 1516 | printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x \n", |
| 1517 | net_dev->name, inl(ioaddr + cr), inl(ioaddr + isr)); |
| 1518 | |
| 1519 | /* Disable interrupts by clearing the interrupt mask. */ |
| 1520 | outl(0x0000, ioaddr + imr); |
| 1521 | |
| 1522 | /* use spinlock to prevent interrupt handler accessing buffer ring */ |
| 1523 | spin_lock_irqsave(&sis_priv->lock, flags); |
| 1524 | |
| 1525 | /* discard unsent packets */ |
| 1526 | sis_priv->dirty_tx = sis_priv->cur_tx = 0; |
| 1527 | for (i = 0; i < NUM_TX_DESC; i++) { |
| 1528 | struct sk_buff *skb = sis_priv->tx_skbuff[i]; |
| 1529 | |
| 1530 | if (skb) { |
| 1531 | pci_unmap_single(sis_priv->pci_dev, |
| 1532 | sis_priv->tx_ring[i].bufptr, skb->len, |
| 1533 | PCI_DMA_TODEVICE); |
| 1534 | dev_kfree_skb_irq(skb); |
| 1535 | sis_priv->tx_skbuff[i] = NULL; |
| 1536 | sis_priv->tx_ring[i].cmdsts = 0; |
| 1537 | sis_priv->tx_ring[i].bufptr = 0; |
| 1538 | sis_priv->stats.tx_dropped++; |
| 1539 | } |
| 1540 | } |
| 1541 | sis_priv->tx_full = 0; |
| 1542 | netif_wake_queue(net_dev); |
| 1543 | |
| 1544 | spin_unlock_irqrestore(&sis_priv->lock, flags); |
| 1545 | |
| 1546 | net_dev->trans_start = jiffies; |
| 1547 | |
| 1548 | /* load Transmit Descriptor Register */ |
| 1549 | outl(sis_priv->tx_ring_dma, ioaddr + txdp); |
| 1550 | |
| 1551 | /* Enable all known interrupts by setting the interrupt mask. */ |
| 1552 | outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr); |
| 1553 | return; |
| 1554 | } |
| 1555 | |
| 1556 | /** |
| 1557 | * sis900_start_xmit - sis900 start transmit routine |
| 1558 | * @skb: socket buffer pointer to put the data being transmitted |
| 1559 | * @net_dev: the net device to transmit with |
| 1560 | * |
| 1561 | * Set the transmit buffer descriptor, |
| 1562 | * and write TxENA to enable transmit state machine. |
| 1563 | * tell upper layer if the buffer is full |
| 1564 | */ |
| 1565 | |
| 1566 | static int |
| 1567 | sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev) |
| 1568 | { |
| 1569 | struct sis900_private *sis_priv = net_dev->priv; |
| 1570 | long ioaddr = net_dev->base_addr; |
| 1571 | unsigned int entry; |
| 1572 | unsigned long flags; |
| 1573 | unsigned int index_cur_tx, index_dirty_tx; |
| 1574 | unsigned int count_dirty_tx; |
| 1575 | |
| 1576 | /* Don't transmit data before the complete of auto-negotiation */ |
| 1577 | if(!sis_priv->autong_complete){ |
| 1578 | netif_stop_queue(net_dev); |
| 1579 | return 1; |
| 1580 | } |
| 1581 | |
| 1582 | spin_lock_irqsave(&sis_priv->lock, flags); |
| 1583 | |
| 1584 | /* Calculate the next Tx descriptor entry. */ |
| 1585 | entry = sis_priv->cur_tx % NUM_TX_DESC; |
| 1586 | sis_priv->tx_skbuff[entry] = skb; |
| 1587 | |
| 1588 | /* set the transmit buffer descriptor and enable Transmit State Machine */ |
| 1589 | sis_priv->tx_ring[entry].bufptr = pci_map_single(sis_priv->pci_dev, |
| 1590 | skb->data, skb->len, PCI_DMA_TODEVICE); |
| 1591 | sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len); |
| 1592 | outl(TxENA | inl(ioaddr + cr), ioaddr + cr); |
| 1593 | |
| 1594 | sis_priv->cur_tx ++; |
| 1595 | index_cur_tx = sis_priv->cur_tx; |
| 1596 | index_dirty_tx = sis_priv->dirty_tx; |
| 1597 | |
| 1598 | for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++) |
| 1599 | count_dirty_tx ++; |
| 1600 | |
| 1601 | if (index_cur_tx == index_dirty_tx) { |
| 1602 | /* dirty_tx is met in the cycle of cur_tx, buffer full */ |
| 1603 | sis_priv->tx_full = 1; |
| 1604 | netif_stop_queue(net_dev); |
| 1605 | } else if (count_dirty_tx < NUM_TX_DESC) { |
| 1606 | /* Typical path, tell upper layer that more transmission is possible */ |
| 1607 | netif_start_queue(net_dev); |
| 1608 | } else { |
| 1609 | /* buffer full, tell upper layer no more transmission */ |
| 1610 | sis_priv->tx_full = 1; |
| 1611 | netif_stop_queue(net_dev); |
| 1612 | } |
| 1613 | |
| 1614 | spin_unlock_irqrestore(&sis_priv->lock, flags); |
| 1615 | |
| 1616 | net_dev->trans_start = jiffies; |
| 1617 | |
| 1618 | if (netif_msg_tx_queued(sis_priv)) |
| 1619 | printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d " |
| 1620 | "to slot %d.\n", |
| 1621 | net_dev->name, skb->data, (int)skb->len, entry); |
| 1622 | |
| 1623 | return 0; |
| 1624 | } |
| 1625 | |
| 1626 | /** |
| 1627 | * sis900_interrupt - sis900 interrupt handler |
| 1628 | * @irq: the irq number |
| 1629 | * @dev_instance: the client data object |
| 1630 | * @regs: snapshot of processor context |
| 1631 | * |
| 1632 | * The interrupt handler does all of the Rx thread work, |
| 1633 | * and cleans up after the Tx thread |
| 1634 | */ |
| 1635 | |
| 1636 | static irqreturn_t sis900_interrupt(int irq, void *dev_instance, struct pt_regs *regs) |
| 1637 | { |
| 1638 | struct net_device *net_dev = dev_instance; |
| 1639 | struct sis900_private *sis_priv = net_dev->priv; |
| 1640 | int boguscnt = max_interrupt_work; |
| 1641 | long ioaddr = net_dev->base_addr; |
| 1642 | u32 status; |
| 1643 | unsigned int handled = 0; |
| 1644 | |
| 1645 | spin_lock (&sis_priv->lock); |
| 1646 | |
| 1647 | do { |
| 1648 | status = inl(ioaddr + isr); |
| 1649 | |
| 1650 | if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0) |
| 1651 | /* nothing intresting happened */ |
| 1652 | break; |
| 1653 | handled = 1; |
| 1654 | |
| 1655 | /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */ |
| 1656 | if (status & (RxORN | RxERR | RxOK)) |
| 1657 | /* Rx interrupt */ |
| 1658 | sis900_rx(net_dev); |
| 1659 | |
| 1660 | if (status & (TxURN | TxERR | TxIDLE)) |
| 1661 | /* Tx interrupt */ |
| 1662 | sis900_finish_xmit(net_dev); |
| 1663 | |
| 1664 | /* something strange happened !!! */ |
| 1665 | if (status & HIBERR) { |
| 1666 | if(netif_msg_intr(sis_priv)) |
| 1667 | printk(KERN_INFO "%s: Abnormal interrupt," |
| 1668 | "status %#8.8x.\n", net_dev->name, status); |
| 1669 | break; |
| 1670 | } |
| 1671 | if (--boguscnt < 0) { |
| 1672 | if(netif_msg_intr(sis_priv)) |
| 1673 | printk(KERN_INFO "%s: Too much work at interrupt, " |
| 1674 | "interrupt status = %#8.8x.\n", |
| 1675 | net_dev->name, status); |
| 1676 | break; |
| 1677 | } |
| 1678 | } while (1); |
| 1679 | |
| 1680 | if(netif_msg_intr(sis_priv)) |
| 1681 | printk(KERN_DEBUG "%s: exiting interrupt, " |
| 1682 | "interrupt status = 0x%#8.8x.\n", |
| 1683 | net_dev->name, inl(ioaddr + isr)); |
| 1684 | |
| 1685 | spin_unlock (&sis_priv->lock); |
| 1686 | return IRQ_RETVAL(handled); |
| 1687 | } |
| 1688 | |
| 1689 | /** |
| 1690 | * sis900_rx - sis900 receive routine |
| 1691 | * @net_dev: the net device which receives data |
| 1692 | * |
| 1693 | * Process receive interrupt events, |
| 1694 | * put buffer to higher layer and refill buffer pool |
| 1695 | * Note: This fucntion is called by interrupt handler, |
| 1696 | * don't do "too much" work here |
| 1697 | */ |
| 1698 | |
| 1699 | static int sis900_rx(struct net_device *net_dev) |
| 1700 | { |
| 1701 | struct sis900_private *sis_priv = net_dev->priv; |
| 1702 | long ioaddr = net_dev->base_addr; |
| 1703 | unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC; |
| 1704 | u32 rx_status = sis_priv->rx_ring[entry].cmdsts; |
Vasily Averin | 7380a78a | 2005-10-28 16:46:35 -0400 | [diff] [blame] | 1705 | int rx_work_limit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | |
| 1707 | if (netif_msg_rx_status(sis_priv)) |
| 1708 | printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d " |
| 1709 | "status:0x%8.8x\n", |
| 1710 | sis_priv->cur_rx, sis_priv->dirty_rx, rx_status); |
Vasily Averin | 7380a78a | 2005-10-28 16:46:35 -0400 | [diff] [blame] | 1711 | rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | |
| 1713 | while (rx_status & OWN) { |
| 1714 | unsigned int rx_size; |
| 1715 | |
Vasily Averin | 7380a78a | 2005-10-28 16:46:35 -0400 | [diff] [blame] | 1716 | if (--rx_work_limit < 0) |
| 1717 | break; |
| 1718 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1719 | rx_size = (rx_status & DSIZE) - CRC_SIZE; |
| 1720 | |
| 1721 | if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) { |
| 1722 | /* corrupted packet received */ |
| 1723 | if (netif_msg_rx_err(sis_priv)) |
| 1724 | printk(KERN_DEBUG "%s: Corrupted packet " |
| 1725 | "received, buffer status = 0x%8.8x.\n", |
| 1726 | net_dev->name, rx_status); |
| 1727 | sis_priv->stats.rx_errors++; |
| 1728 | if (rx_status & OVERRUN) |
| 1729 | sis_priv->stats.rx_over_errors++; |
| 1730 | if (rx_status & (TOOLONG|RUNT)) |
| 1731 | sis_priv->stats.rx_length_errors++; |
| 1732 | if (rx_status & (RXISERR | FAERR)) |
| 1733 | sis_priv->stats.rx_frame_errors++; |
| 1734 | if (rx_status & CRCERR) |
| 1735 | sis_priv->stats.rx_crc_errors++; |
| 1736 | /* reset buffer descriptor state */ |
| 1737 | sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE; |
| 1738 | } else { |
| 1739 | struct sk_buff * skb; |
| 1740 | |
| 1741 | /* This situation should never happen, but due to |
| 1742 | some unknow bugs, it is possible that |
| 1743 | we are working on NULL sk_buff :-( */ |
| 1744 | if (sis_priv->rx_skbuff[entry] == NULL) { |
| 1745 | if (netif_msg_rx_err(sis_priv)) |
Vasily Averin | 7380a78a | 2005-10-28 16:46:35 -0400 | [diff] [blame] | 1746 | printk(KERN_WARNING "%s: NULL pointer " |
| 1747 | "encountered in Rx ring\n" |
| 1748 | "cur_rx:%4.4d, dirty_rx:%4.4d\n", |
| 1749 | net_dev->name, sis_priv->cur_rx, |
| 1750 | sis_priv->dirty_rx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | break; |
| 1752 | } |
| 1753 | |
| 1754 | pci_unmap_single(sis_priv->pci_dev, |
| 1755 | sis_priv->rx_ring[entry].bufptr, RX_BUF_SIZE, |
| 1756 | PCI_DMA_FROMDEVICE); |
| 1757 | /* give the socket buffer to upper layers */ |
| 1758 | skb = sis_priv->rx_skbuff[entry]; |
| 1759 | skb_put(skb, rx_size); |
| 1760 | skb->protocol = eth_type_trans(skb, net_dev); |
| 1761 | netif_rx(skb); |
| 1762 | |
| 1763 | /* some network statistics */ |
| 1764 | if ((rx_status & BCAST) == MCAST) |
| 1765 | sis_priv->stats.multicast++; |
| 1766 | net_dev->last_rx = jiffies; |
| 1767 | sis_priv->stats.rx_bytes += rx_size; |
| 1768 | sis_priv->stats.rx_packets++; |
| 1769 | |
| 1770 | /* refill the Rx buffer, what if there is not enought |
| 1771 | * memory for new socket buffer ?? */ |
| 1772 | if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) { |
| 1773 | /* not enough memory for skbuff, this makes a |
| 1774 | * "hole" on the buffer ring, it is not clear |
| 1775 | * how the hardware will react to this kind |
| 1776 | * of degenerated buffer */ |
| 1777 | if (netif_msg_rx_status(sis_priv)) |
| 1778 | printk(KERN_INFO "%s: Memory squeeze," |
| 1779 | "deferring packet.\n", |
| 1780 | net_dev->name); |
| 1781 | sis_priv->rx_skbuff[entry] = NULL; |
| 1782 | /* reset buffer descriptor state */ |
| 1783 | sis_priv->rx_ring[entry].cmdsts = 0; |
| 1784 | sis_priv->rx_ring[entry].bufptr = 0; |
| 1785 | sis_priv->stats.rx_dropped++; |
Vasily Averin | 7380a78a | 2005-10-28 16:46:35 -0400 | [diff] [blame] | 1786 | sis_priv->cur_rx++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | break; |
| 1788 | } |
| 1789 | skb->dev = net_dev; |
| 1790 | sis_priv->rx_skbuff[entry] = skb; |
| 1791 | sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE; |
| 1792 | sis_priv->rx_ring[entry].bufptr = |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1793 | pci_map_single(sis_priv->pci_dev, skb->data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1794 | RX_BUF_SIZE, PCI_DMA_FROMDEVICE); |
| 1795 | sis_priv->dirty_rx++; |
| 1796 | } |
| 1797 | sis_priv->cur_rx++; |
| 1798 | entry = sis_priv->cur_rx % NUM_RX_DESC; |
| 1799 | rx_status = sis_priv->rx_ring[entry].cmdsts; |
| 1800 | } // while |
| 1801 | |
| 1802 | /* refill the Rx buffer, what if the rate of refilling is slower |
| 1803 | * than consuming ?? */ |
Vasily Averin | 7380a78a | 2005-10-28 16:46:35 -0400 | [diff] [blame] | 1804 | for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | struct sk_buff *skb; |
| 1806 | |
| 1807 | entry = sis_priv->dirty_rx % NUM_RX_DESC; |
| 1808 | |
| 1809 | if (sis_priv->rx_skbuff[entry] == NULL) { |
| 1810 | if ((skb = dev_alloc_skb(RX_BUF_SIZE)) == NULL) { |
| 1811 | /* not enough memory for skbuff, this makes a |
| 1812 | * "hole" on the buffer ring, it is not clear |
| 1813 | * how the hardware will react to this kind |
| 1814 | * of degenerated buffer */ |
| 1815 | if (netif_msg_rx_err(sis_priv)) |
| 1816 | printk(KERN_INFO "%s: Memory squeeze," |
| 1817 | "deferring packet.\n", |
| 1818 | net_dev->name); |
| 1819 | sis_priv->stats.rx_dropped++; |
| 1820 | break; |
| 1821 | } |
| 1822 | skb->dev = net_dev; |
| 1823 | sis_priv->rx_skbuff[entry] = skb; |
| 1824 | sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE; |
| 1825 | sis_priv->rx_ring[entry].bufptr = |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 1826 | pci_map_single(sis_priv->pci_dev, skb->data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | RX_BUF_SIZE, PCI_DMA_FROMDEVICE); |
| 1828 | } |
| 1829 | } |
| 1830 | /* re-enable the potentially idle receive state matchine */ |
| 1831 | outl(RxENA | inl(ioaddr + cr), ioaddr + cr ); |
| 1832 | |
| 1833 | return 0; |
| 1834 | } |
| 1835 | |
| 1836 | /** |
| 1837 | * sis900_finish_xmit - finish up transmission of packets |
| 1838 | * @net_dev: the net device to be transmitted on |
| 1839 | * |
| 1840 | * Check for error condition and free socket buffer etc |
| 1841 | * schedule for more transmission as needed |
| 1842 | * Note: This fucntion is called by interrupt handler, |
| 1843 | * don't do "too much" work here |
| 1844 | */ |
| 1845 | |
| 1846 | static void sis900_finish_xmit (struct net_device *net_dev) |
| 1847 | { |
| 1848 | struct sis900_private *sis_priv = net_dev->priv; |
| 1849 | |
| 1850 | for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) { |
| 1851 | struct sk_buff *skb; |
| 1852 | unsigned int entry; |
| 1853 | u32 tx_status; |
| 1854 | |
| 1855 | entry = sis_priv->dirty_tx % NUM_TX_DESC; |
| 1856 | tx_status = sis_priv->tx_ring[entry].cmdsts; |
| 1857 | |
| 1858 | if (tx_status & OWN) { |
| 1859 | /* The packet is not transmitted yet (owned by hardware) ! |
| 1860 | * Note: the interrupt is generated only when Tx Machine |
| 1861 | * is idle, so this is an almost impossible case */ |
| 1862 | break; |
| 1863 | } |
| 1864 | |
| 1865 | if (tx_status & (ABORT | UNDERRUN | OWCOLL)) { |
| 1866 | /* packet unsuccessfully transmitted */ |
| 1867 | if (netif_msg_tx_err(sis_priv)) |
| 1868 | printk(KERN_DEBUG "%s: Transmit " |
| 1869 | "error, Tx status %8.8x.\n", |
| 1870 | net_dev->name, tx_status); |
| 1871 | sis_priv->stats.tx_errors++; |
| 1872 | if (tx_status & UNDERRUN) |
| 1873 | sis_priv->stats.tx_fifo_errors++; |
| 1874 | if (tx_status & ABORT) |
| 1875 | sis_priv->stats.tx_aborted_errors++; |
| 1876 | if (tx_status & NOCARRIER) |
| 1877 | sis_priv->stats.tx_carrier_errors++; |
| 1878 | if (tx_status & OWCOLL) |
| 1879 | sis_priv->stats.tx_window_errors++; |
| 1880 | } else { |
| 1881 | /* packet successfully transmitted */ |
| 1882 | sis_priv->stats.collisions += (tx_status & COLCNT) >> 16; |
| 1883 | sis_priv->stats.tx_bytes += tx_status & DSIZE; |
| 1884 | sis_priv->stats.tx_packets++; |
| 1885 | } |
| 1886 | /* Free the original skb. */ |
| 1887 | skb = sis_priv->tx_skbuff[entry]; |
| 1888 | pci_unmap_single(sis_priv->pci_dev, |
| 1889 | sis_priv->tx_ring[entry].bufptr, skb->len, |
| 1890 | PCI_DMA_TODEVICE); |
| 1891 | dev_kfree_skb_irq(skb); |
| 1892 | sis_priv->tx_skbuff[entry] = NULL; |
| 1893 | sis_priv->tx_ring[entry].bufptr = 0; |
| 1894 | sis_priv->tx_ring[entry].cmdsts = 0; |
| 1895 | } |
| 1896 | |
| 1897 | if (sis_priv->tx_full && netif_queue_stopped(net_dev) && |
| 1898 | sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) { |
| 1899 | /* The ring is no longer full, clear tx_full and schedule |
| 1900 | * more transmission by netif_wake_queue(net_dev) */ |
| 1901 | sis_priv->tx_full = 0; |
| 1902 | netif_wake_queue (net_dev); |
| 1903 | } |
| 1904 | } |
| 1905 | |
| 1906 | /** |
| 1907 | * sis900_close - close sis900 device |
| 1908 | * @net_dev: the net device to be closed |
| 1909 | * |
| 1910 | * Disable interrupts, stop the Tx and Rx Status Machine |
| 1911 | * free Tx and RX socket buffer |
| 1912 | */ |
| 1913 | |
| 1914 | static int sis900_close(struct net_device *net_dev) |
| 1915 | { |
| 1916 | long ioaddr = net_dev->base_addr; |
| 1917 | struct sis900_private *sis_priv = net_dev->priv; |
| 1918 | struct sk_buff *skb; |
| 1919 | int i; |
| 1920 | |
| 1921 | netif_stop_queue(net_dev); |
| 1922 | |
| 1923 | /* Disable interrupts by clearing the interrupt mask. */ |
| 1924 | outl(0x0000, ioaddr + imr); |
| 1925 | outl(0x0000, ioaddr + ier); |
| 1926 | |
| 1927 | /* Stop the chip's Tx and Rx Status Machine */ |
| 1928 | outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr); |
| 1929 | |
| 1930 | del_timer(&sis_priv->timer); |
| 1931 | |
| 1932 | free_irq(net_dev->irq, net_dev); |
| 1933 | |
| 1934 | /* Free Tx and RX skbuff */ |
| 1935 | for (i = 0; i < NUM_RX_DESC; i++) { |
| 1936 | skb = sis_priv->rx_skbuff[i]; |
| 1937 | if (skb) { |
| 1938 | pci_unmap_single(sis_priv->pci_dev, |
| 1939 | sis_priv->rx_ring[i].bufptr, |
| 1940 | RX_BUF_SIZE, PCI_DMA_FROMDEVICE); |
| 1941 | dev_kfree_skb(skb); |
| 1942 | sis_priv->rx_skbuff[i] = NULL; |
| 1943 | } |
| 1944 | } |
| 1945 | for (i = 0; i < NUM_TX_DESC; i++) { |
| 1946 | skb = sis_priv->tx_skbuff[i]; |
| 1947 | if (skb) { |
| 1948 | pci_unmap_single(sis_priv->pci_dev, |
| 1949 | sis_priv->tx_ring[i].bufptr, skb->len, |
| 1950 | PCI_DMA_TODEVICE); |
| 1951 | dev_kfree_skb(skb); |
| 1952 | sis_priv->tx_skbuff[i] = NULL; |
| 1953 | } |
| 1954 | } |
| 1955 | |
| 1956 | /* Green! Put the chip in low-power mode. */ |
| 1957 | |
| 1958 | return 0; |
| 1959 | } |
| 1960 | |
| 1961 | /** |
| 1962 | * sis900_get_drvinfo - Return information about driver |
| 1963 | * @net_dev: the net device to probe |
| 1964 | * @info: container for info returned |
| 1965 | * |
| 1966 | * Process ethtool command such as "ehtool -i" to show information |
| 1967 | */ |
| 1968 | |
| 1969 | static void sis900_get_drvinfo(struct net_device *net_dev, |
| 1970 | struct ethtool_drvinfo *info) |
| 1971 | { |
| 1972 | struct sis900_private *sis_priv = net_dev->priv; |
| 1973 | |
| 1974 | strcpy (info->driver, SIS900_MODULE_NAME); |
| 1975 | strcpy (info->version, SIS900_DRV_VERSION); |
| 1976 | strcpy (info->bus_info, pci_name(sis_priv->pci_dev)); |
| 1977 | } |
| 1978 | |
| 1979 | static u32 sis900_get_msglevel(struct net_device *net_dev) |
| 1980 | { |
| 1981 | struct sis900_private *sis_priv = net_dev->priv; |
| 1982 | return sis_priv->msg_enable; |
| 1983 | } |
| 1984 | |
| 1985 | static void sis900_set_msglevel(struct net_device *net_dev, u32 value) |
| 1986 | { |
| 1987 | struct sis900_private *sis_priv = net_dev->priv; |
| 1988 | sis_priv->msg_enable = value; |
| 1989 | } |
| 1990 | |
Daniele Venzano | da369b0 | 2005-05-12 20:13:14 -0400 | [diff] [blame] | 1991 | static u32 sis900_get_link(struct net_device *net_dev) |
| 1992 | { |
| 1993 | struct sis900_private *sis_priv = net_dev->priv; |
| 1994 | return mii_link_ok(&sis_priv->mii_info); |
| 1995 | } |
| 1996 | |
| 1997 | static int sis900_get_settings(struct net_device *net_dev, |
| 1998 | struct ethtool_cmd *cmd) |
| 1999 | { |
| 2000 | struct sis900_private *sis_priv = net_dev->priv; |
| 2001 | spin_lock_irq(&sis_priv->lock); |
| 2002 | mii_ethtool_gset(&sis_priv->mii_info, cmd); |
| 2003 | spin_unlock_irq(&sis_priv->lock); |
| 2004 | return 0; |
| 2005 | } |
| 2006 | |
| 2007 | static int sis900_set_settings(struct net_device *net_dev, |
| 2008 | struct ethtool_cmd *cmd) |
| 2009 | { |
| 2010 | struct sis900_private *sis_priv = net_dev->priv; |
| 2011 | int rt; |
| 2012 | spin_lock_irq(&sis_priv->lock); |
| 2013 | rt = mii_ethtool_sset(&sis_priv->mii_info, cmd); |
| 2014 | spin_unlock_irq(&sis_priv->lock); |
| 2015 | return rt; |
| 2016 | } |
| 2017 | |
| 2018 | static int sis900_nway_reset(struct net_device *net_dev) |
| 2019 | { |
| 2020 | struct sis900_private *sis_priv = net_dev->priv; |
| 2021 | return mii_nway_restart(&sis_priv->mii_info); |
| 2022 | } |
| 2023 | |
Daniele Venzano | ea37cce | 2005-10-11 09:44:30 +0200 | [diff] [blame] | 2024 | /** |
| 2025 | * sis900_set_wol - Set up Wake on Lan registers |
| 2026 | * @net_dev: the net device to probe |
| 2027 | * @wol: container for info passed to the driver |
| 2028 | * |
| 2029 | * Process ethtool command "wol" to setup wake on lan features. |
| 2030 | * SiS900 supports sending WoL events if a correct packet is received, |
| 2031 | * but there is no simple way to filter them to only a subset (broadcast, |
| 2032 | * multicast, unicast or arp). |
| 2033 | */ |
| 2034 | |
| 2035 | static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol) |
| 2036 | { |
| 2037 | struct sis900_private *sis_priv = net_dev->priv; |
| 2038 | long pmctrl_addr = net_dev->base_addr + pmctrl; |
| 2039 | u32 cfgpmcsr = 0, pmctrl_bits = 0; |
| 2040 | |
| 2041 | if (wol->wolopts == 0) { |
| 2042 | pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr); |
| 2043 | cfgpmcsr |= ~PME_EN; |
| 2044 | pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr); |
| 2045 | outl(pmctrl_bits, pmctrl_addr); |
| 2046 | if (netif_msg_wol(sis_priv)) |
| 2047 | printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name); |
| 2048 | return 0; |
| 2049 | } |
| 2050 | |
| 2051 | if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST |
| 2052 | | WAKE_BCAST | WAKE_ARP)) |
| 2053 | return -EINVAL; |
| 2054 | |
| 2055 | if (wol->wolopts & WAKE_MAGIC) |
| 2056 | pmctrl_bits |= MAGICPKT; |
| 2057 | if (wol->wolopts & WAKE_PHY) |
| 2058 | pmctrl_bits |= LINKON; |
| 2059 | |
| 2060 | outl(pmctrl_bits, pmctrl_addr); |
| 2061 | |
| 2062 | pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr); |
| 2063 | cfgpmcsr |= PME_EN; |
| 2064 | pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr); |
| 2065 | if (netif_msg_wol(sis_priv)) |
| 2066 | printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name); |
| 2067 | |
| 2068 | return 0; |
| 2069 | } |
| 2070 | |
| 2071 | static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol) |
| 2072 | { |
| 2073 | long pmctrl_addr = net_dev->base_addr + pmctrl; |
| 2074 | u32 pmctrl_bits; |
| 2075 | |
| 2076 | pmctrl_bits = inl(pmctrl_addr); |
| 2077 | if (pmctrl_bits & MAGICPKT) |
| 2078 | wol->wolopts |= WAKE_MAGIC; |
| 2079 | if (pmctrl_bits & LINKON) |
| 2080 | wol->wolopts |= WAKE_PHY; |
| 2081 | |
| 2082 | wol->supported = (WAKE_PHY | WAKE_MAGIC); |
| 2083 | } |
| 2084 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2085 | static struct ethtool_ops sis900_ethtool_ops = { |
| 2086 | .get_drvinfo = sis900_get_drvinfo, |
| 2087 | .get_msglevel = sis900_get_msglevel, |
| 2088 | .set_msglevel = sis900_set_msglevel, |
Daniele Venzano | da369b0 | 2005-05-12 20:13:14 -0400 | [diff] [blame] | 2089 | .get_link = sis900_get_link, |
| 2090 | .get_settings = sis900_get_settings, |
| 2091 | .set_settings = sis900_set_settings, |
| 2092 | .nway_reset = sis900_nway_reset, |
Daniele Venzano | ea37cce | 2005-10-11 09:44:30 +0200 | [diff] [blame] | 2093 | .get_wol = sis900_get_wol, |
| 2094 | .set_wol = sis900_set_wol |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2095 | }; |
| 2096 | |
| 2097 | /** |
| 2098 | * mii_ioctl - process MII i/o control command |
| 2099 | * @net_dev: the net device to command for |
| 2100 | * @rq: parameter for command |
| 2101 | * @cmd: the i/o command |
| 2102 | * |
| 2103 | * Process MII command like read/write MII register |
| 2104 | */ |
| 2105 | |
| 2106 | static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd) |
| 2107 | { |
| 2108 | struct sis900_private *sis_priv = net_dev->priv; |
| 2109 | struct mii_ioctl_data *data = if_mii(rq); |
| 2110 | |
| 2111 | switch(cmd) { |
| 2112 | case SIOCGMIIPHY: /* Get address of MII PHY in use. */ |
| 2113 | data->phy_id = sis_priv->mii->phy_addr; |
| 2114 | /* Fall Through */ |
| 2115 | |
| 2116 | case SIOCGMIIREG: /* Read MII PHY register. */ |
| 2117 | data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f); |
| 2118 | return 0; |
| 2119 | |
| 2120 | case SIOCSMIIREG: /* Write MII PHY register. */ |
| 2121 | if (!capable(CAP_NET_ADMIN)) |
| 2122 | return -EPERM; |
| 2123 | mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in); |
| 2124 | return 0; |
| 2125 | default: |
| 2126 | return -EOPNOTSUPP; |
| 2127 | } |
| 2128 | } |
| 2129 | |
| 2130 | /** |
| 2131 | * sis900_get_stats - Get sis900 read/write statistics |
| 2132 | * @net_dev: the net device to get statistics for |
| 2133 | * |
| 2134 | * get tx/rx statistics for sis900 |
| 2135 | */ |
| 2136 | |
| 2137 | static struct net_device_stats * |
| 2138 | sis900_get_stats(struct net_device *net_dev) |
| 2139 | { |
| 2140 | struct sis900_private *sis_priv = net_dev->priv; |
| 2141 | |
| 2142 | return &sis_priv->stats; |
| 2143 | } |
| 2144 | |
| 2145 | /** |
| 2146 | * sis900_set_config - Set media type by net_device.set_config |
| 2147 | * @dev: the net device for media type change |
| 2148 | * @map: ifmap passed by ifconfig |
| 2149 | * |
| 2150 | * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig |
| 2151 | * we support only port changes. All other runtime configuration |
| 2152 | * changes will be ignored |
| 2153 | */ |
| 2154 | |
| 2155 | static int sis900_set_config(struct net_device *dev, struct ifmap *map) |
| 2156 | { |
| 2157 | struct sis900_private *sis_priv = dev->priv; |
| 2158 | struct mii_phy *mii_phy = sis_priv->mii; |
| 2159 | |
| 2160 | u16 status; |
| 2161 | |
| 2162 | if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) { |
| 2163 | /* we switch on the ifmap->port field. I couldn't find anything |
| 2164 | * like a definition or standard for the values of that field. |
| 2165 | * I think the meaning of those values is device specific. But |
| 2166 | * since I would like to change the media type via the ifconfig |
| 2167 | * command I use the definition from linux/netdevice.h |
| 2168 | * (which seems to be different from the ifport(pcmcia) definition) */ |
| 2169 | switch(map->port){ |
| 2170 | case IF_PORT_UNKNOWN: /* use auto here */ |
| 2171 | dev->if_port = map->port; |
| 2172 | /* we are going to change the media type, so the Link |
| 2173 | * will be temporary down and we need to reflect that |
| 2174 | * here. When the Link comes up again, it will be |
| 2175 | * sensed by the sis_timer procedure, which also does |
| 2176 | * all the rest for us */ |
| 2177 | netif_carrier_off(dev); |
| 2178 | |
| 2179 | /* read current state */ |
| 2180 | status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL); |
| 2181 | |
| 2182 | /* enable auto negotiation and reset the negotioation |
| 2183 | * (I don't really know what the auto negatiotiation |
| 2184 | * reset really means, but it sounds for me right to |
| 2185 | * do one here) */ |
| 2186 | mdio_write(dev, mii_phy->phy_addr, |
| 2187 | MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO); |
| 2188 | |
| 2189 | break; |
| 2190 | |
| 2191 | case IF_PORT_10BASET: /* 10BaseT */ |
| 2192 | dev->if_port = map->port; |
| 2193 | |
| 2194 | /* we are going to change the media type, so the Link |
| 2195 | * will be temporary down and we need to reflect that |
| 2196 | * here. When the Link comes up again, it will be |
| 2197 | * sensed by the sis_timer procedure, which also does |
| 2198 | * all the rest for us */ |
| 2199 | netif_carrier_off(dev); |
| 2200 | |
| 2201 | /* set Speed to 10Mbps */ |
| 2202 | /* read current state */ |
| 2203 | status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL); |
| 2204 | |
| 2205 | /* disable auto negotiation and force 10MBit mode*/ |
| 2206 | mdio_write(dev, mii_phy->phy_addr, |
| 2207 | MII_CONTROL, status & ~(MII_CNTL_SPEED | |
| 2208 | MII_CNTL_AUTO)); |
| 2209 | break; |
| 2210 | |
| 2211 | case IF_PORT_100BASET: /* 100BaseT */ |
| 2212 | case IF_PORT_100BASETX: /* 100BaseTx */ |
| 2213 | dev->if_port = map->port; |
| 2214 | |
| 2215 | /* we are going to change the media type, so the Link |
| 2216 | * will be temporary down and we need to reflect that |
| 2217 | * here. When the Link comes up again, it will be |
| 2218 | * sensed by the sis_timer procedure, which also does |
| 2219 | * all the rest for us */ |
| 2220 | netif_carrier_off(dev); |
| 2221 | |
| 2222 | /* set Speed to 100Mbps */ |
| 2223 | /* disable auto negotiation and enable 100MBit Mode */ |
| 2224 | status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL); |
| 2225 | mdio_write(dev, mii_phy->phy_addr, |
| 2226 | MII_CONTROL, (status & ~MII_CNTL_SPEED) | |
| 2227 | MII_CNTL_SPEED); |
| 2228 | |
| 2229 | break; |
| 2230 | |
| 2231 | case IF_PORT_10BASE2: /* 10Base2 */ |
| 2232 | case IF_PORT_AUI: /* AUI */ |
| 2233 | case IF_PORT_100BASEFX: /* 100BaseFx */ |
| 2234 | /* These Modes are not supported (are they?)*/ |
| 2235 | return -EOPNOTSUPP; |
| 2236 | break; |
| 2237 | |
| 2238 | default: |
| 2239 | return -EINVAL; |
| 2240 | } |
| 2241 | } |
| 2242 | return 0; |
| 2243 | } |
| 2244 | |
| 2245 | /** |
| 2246 | * sis900_mcast_bitnr - compute hashtable index |
| 2247 | * @addr: multicast address |
| 2248 | * @revision: revision id of chip |
| 2249 | * |
| 2250 | * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast |
| 2251 | * hash table, which makes this function a little bit different from other drivers |
| 2252 | * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits |
| 2253 | * multicast hash table. |
| 2254 | */ |
| 2255 | |
| 2256 | static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision) |
| 2257 | { |
| 2258 | |
| 2259 | u32 crc = ether_crc(6, addr); |
| 2260 | |
| 2261 | /* leave 8 or 7 most siginifant bits */ |
| 2262 | if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV)) |
| 2263 | return ((int)(crc >> 24)); |
| 2264 | else |
| 2265 | return ((int)(crc >> 25)); |
| 2266 | } |
| 2267 | |
| 2268 | /** |
| 2269 | * set_rx_mode - Set SiS900 receive mode |
| 2270 | * @net_dev: the net device to be set |
| 2271 | * |
| 2272 | * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode. |
| 2273 | * And set the appropriate multicast filter. |
| 2274 | * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0. |
| 2275 | */ |
| 2276 | |
| 2277 | static void set_rx_mode(struct net_device *net_dev) |
| 2278 | { |
| 2279 | long ioaddr = net_dev->base_addr; |
| 2280 | struct sis900_private * sis_priv = net_dev->priv; |
| 2281 | u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */ |
| 2282 | int i, table_entries; |
| 2283 | u32 rx_mode; |
| 2284 | |
| 2285 | /* 635 Hash Table entires = 256(2^16) */ |
| 2286 | if((sis_priv->chipset_rev >= SIS635A_900_REV) || |
| 2287 | (sis_priv->chipset_rev == SIS900B_900_REV)) |
| 2288 | table_entries = 16; |
| 2289 | else |
| 2290 | table_entries = 8; |
| 2291 | |
| 2292 | if (net_dev->flags & IFF_PROMISC) { |
| 2293 | /* Accept any kinds of packets */ |
| 2294 | rx_mode = RFPromiscuous; |
| 2295 | for (i = 0; i < table_entries; i++) |
| 2296 | mc_filter[i] = 0xffff; |
| 2297 | } else if ((net_dev->mc_count > multicast_filter_limit) || |
| 2298 | (net_dev->flags & IFF_ALLMULTI)) { |
| 2299 | /* too many multicast addresses or accept all multicast packet */ |
| 2300 | rx_mode = RFAAB | RFAAM; |
| 2301 | for (i = 0; i < table_entries; i++) |
| 2302 | mc_filter[i] = 0xffff; |
| 2303 | } else { |
| 2304 | /* Accept Broadcast packet, destination address matchs our |
| 2305 | * MAC address, use Receive Filter to reject unwanted MCAST |
| 2306 | * packets */ |
| 2307 | struct dev_mc_list *mclist; |
| 2308 | rx_mode = RFAAB; |
| 2309 | for (i = 0, mclist = net_dev->mc_list; |
| 2310 | mclist && i < net_dev->mc_count; |
| 2311 | i++, mclist = mclist->next) { |
| 2312 | unsigned int bit_nr = |
| 2313 | sis900_mcast_bitnr(mclist->dmi_addr, sis_priv->chipset_rev); |
| 2314 | mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf)); |
| 2315 | } |
| 2316 | } |
| 2317 | |
| 2318 | /* update Multicast Hash Table in Receive Filter */ |
| 2319 | for (i = 0; i < table_entries; i++) { |
| 2320 | /* why plus 0x04 ??, That makes the correct value for hash table. */ |
| 2321 | outl((u32)(0x00000004+i) << RFADDR_shift, ioaddr + rfcr); |
| 2322 | outl(mc_filter[i], ioaddr + rfdr); |
| 2323 | } |
| 2324 | |
| 2325 | outl(RFEN | rx_mode, ioaddr + rfcr); |
| 2326 | |
| 2327 | /* sis900 is capable of looping back packets at MAC level for |
| 2328 | * debugging purpose */ |
| 2329 | if (net_dev->flags & IFF_LOOPBACK) { |
| 2330 | u32 cr_saved; |
| 2331 | /* We must disable Tx/Rx before setting loopback mode */ |
| 2332 | cr_saved = inl(ioaddr + cr); |
| 2333 | outl(cr_saved | TxDIS | RxDIS, ioaddr + cr); |
| 2334 | /* enable loopback */ |
| 2335 | outl(inl(ioaddr + txcfg) | TxMLB, ioaddr + txcfg); |
| 2336 | outl(inl(ioaddr + rxcfg) | RxATX, ioaddr + rxcfg); |
| 2337 | /* restore cr */ |
| 2338 | outl(cr_saved, ioaddr + cr); |
| 2339 | } |
| 2340 | |
| 2341 | return; |
| 2342 | } |
| 2343 | |
| 2344 | /** |
| 2345 | * sis900_reset - Reset sis900 MAC |
| 2346 | * @net_dev: the net device to reset |
| 2347 | * |
| 2348 | * reset sis900 MAC and wait until finished |
| 2349 | * reset through command register |
| 2350 | * change backoff algorithm for 900B0 & 635 M/B |
| 2351 | */ |
| 2352 | |
| 2353 | static void sis900_reset(struct net_device *net_dev) |
| 2354 | { |
| 2355 | struct sis900_private * sis_priv = net_dev->priv; |
| 2356 | long ioaddr = net_dev->base_addr; |
| 2357 | int i = 0; |
| 2358 | u32 status = TxRCMP | RxRCMP; |
| 2359 | |
| 2360 | outl(0, ioaddr + ier); |
| 2361 | outl(0, ioaddr + imr); |
| 2362 | outl(0, ioaddr + rfcr); |
| 2363 | |
| 2364 | outl(RxRESET | TxRESET | RESET | inl(ioaddr + cr), ioaddr + cr); |
| 2365 | |
| 2366 | /* Check that the chip has finished the reset. */ |
| 2367 | while (status && (i++ < 1000)) { |
| 2368 | status ^= (inl(isr + ioaddr) & status); |
| 2369 | } |
| 2370 | |
| 2371 | if( (sis_priv->chipset_rev >= SIS635A_900_REV) || |
| 2372 | (sis_priv->chipset_rev == SIS900B_900_REV) ) |
| 2373 | outl(PESEL | RND_CNT, ioaddr + cfg); |
| 2374 | else |
| 2375 | outl(PESEL, ioaddr + cfg); |
| 2376 | } |
| 2377 | |
| 2378 | /** |
| 2379 | * sis900_remove - Remove sis900 device |
| 2380 | * @pci_dev: the pci device to be removed |
| 2381 | * |
| 2382 | * remove and release SiS900 net device |
| 2383 | */ |
| 2384 | |
| 2385 | static void __devexit sis900_remove(struct pci_dev *pci_dev) |
| 2386 | { |
| 2387 | struct net_device *net_dev = pci_get_drvdata(pci_dev); |
| 2388 | struct sis900_private * sis_priv = net_dev->priv; |
| 2389 | struct mii_phy *phy = NULL; |
| 2390 | |
| 2391 | while (sis_priv->first_mii) { |
| 2392 | phy = sis_priv->first_mii; |
| 2393 | sis_priv->first_mii = phy->next; |
| 2394 | kfree(phy); |
| 2395 | } |
| 2396 | |
| 2397 | pci_free_consistent(pci_dev, RX_TOTAL_SIZE, sis_priv->rx_ring, |
| 2398 | sis_priv->rx_ring_dma); |
| 2399 | pci_free_consistent(pci_dev, TX_TOTAL_SIZE, sis_priv->tx_ring, |
| 2400 | sis_priv->tx_ring_dma); |
| 2401 | unregister_netdev(net_dev); |
| 2402 | free_netdev(net_dev); |
| 2403 | pci_release_regions(pci_dev); |
| 2404 | pci_set_drvdata(pci_dev, NULL); |
| 2405 | } |
| 2406 | |
| 2407 | #ifdef CONFIG_PM |
| 2408 | |
| 2409 | static int sis900_suspend(struct pci_dev *pci_dev, pm_message_t state) |
| 2410 | { |
| 2411 | struct net_device *net_dev = pci_get_drvdata(pci_dev); |
| 2412 | long ioaddr = net_dev->base_addr; |
| 2413 | |
| 2414 | if(!netif_running(net_dev)) |
| 2415 | return 0; |
| 2416 | |
| 2417 | netif_stop_queue(net_dev); |
| 2418 | netif_device_detach(net_dev); |
| 2419 | |
| 2420 | /* Stop the chip's Tx and Rx Status Machine */ |
| 2421 | outl(RxDIS | TxDIS | inl(ioaddr + cr), ioaddr + cr); |
| 2422 | |
| 2423 | pci_set_power_state(pci_dev, PCI_D3hot); |
| 2424 | pci_save_state(pci_dev); |
| 2425 | |
| 2426 | return 0; |
| 2427 | } |
| 2428 | |
| 2429 | static int sis900_resume(struct pci_dev *pci_dev) |
| 2430 | { |
| 2431 | struct net_device *net_dev = pci_get_drvdata(pci_dev); |
| 2432 | struct sis900_private *sis_priv = net_dev->priv; |
| 2433 | long ioaddr = net_dev->base_addr; |
| 2434 | |
| 2435 | if(!netif_running(net_dev)) |
| 2436 | return 0; |
| 2437 | pci_restore_state(pci_dev); |
| 2438 | pci_set_power_state(pci_dev, PCI_D0); |
| 2439 | |
| 2440 | sis900_init_rxfilter(net_dev); |
| 2441 | |
| 2442 | sis900_init_tx_ring(net_dev); |
| 2443 | sis900_init_rx_ring(net_dev); |
| 2444 | |
| 2445 | set_rx_mode(net_dev); |
| 2446 | |
| 2447 | netif_device_attach(net_dev); |
| 2448 | netif_start_queue(net_dev); |
| 2449 | |
| 2450 | /* Workaround for EDB */ |
| 2451 | sis900_set_mode(ioaddr, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED); |
| 2452 | |
| 2453 | /* Enable all known interrupts by setting the interrupt mask. */ |
| 2454 | outl((RxSOVR|RxORN|RxERR|RxOK|TxURN|TxERR|TxIDLE), ioaddr + imr); |
| 2455 | outl(RxENA | inl(ioaddr + cr), ioaddr + cr); |
| 2456 | outl(IE, ioaddr + ier); |
| 2457 | |
| 2458 | sis900_check_mode(net_dev, sis_priv->mii); |
| 2459 | |
| 2460 | return 0; |
| 2461 | } |
| 2462 | #endif /* CONFIG_PM */ |
| 2463 | |
| 2464 | static struct pci_driver sis900_pci_driver = { |
| 2465 | .name = SIS900_MODULE_NAME, |
| 2466 | .id_table = sis900_pci_tbl, |
| 2467 | .probe = sis900_probe, |
| 2468 | .remove = __devexit_p(sis900_remove), |
| 2469 | #ifdef CONFIG_PM |
| 2470 | .suspend = sis900_suspend, |
| 2471 | .resume = sis900_resume, |
| 2472 | #endif /* CONFIG_PM */ |
| 2473 | }; |
| 2474 | |
| 2475 | static int __init sis900_init_module(void) |
| 2476 | { |
| 2477 | /* when a module, this is printed whether or not devices are found in probe */ |
| 2478 | #ifdef MODULE |
| 2479 | printk(version); |
| 2480 | #endif |
| 2481 | |
| 2482 | return pci_module_init(&sis900_pci_driver); |
| 2483 | } |
| 2484 | |
| 2485 | static void __exit sis900_cleanup_module(void) |
| 2486 | { |
| 2487 | pci_unregister_driver(&sis900_pci_driver); |
| 2488 | } |
| 2489 | |
| 2490 | module_init(sis900_init_module); |
| 2491 | module_exit(sis900_cleanup_module); |
| 2492 | |