Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* Intel Professional Workstation/panther ethernet driver */ |
| 2 | /* lp486e.c: A panther 82596 ethernet driver for linux. */ |
| 3 | /* |
| 4 | History and copyrights: |
| 5 | |
| 6 | Driver skeleton |
| 7 | Written 1993 by Donald Becker. |
| 8 | Copyright 1993 United States Government as represented by the Director, |
| 9 | National Security Agency. This software may only be used and |
| 10 | distributed according to the terms of the GNU General Public License |
| 11 | as modified by SRC, incorporated herein by reference. |
| 12 | |
| 13 | The author may be reached as becker@scyld.com, or C/O |
| 14 | Scyld Computing Corporation |
| 15 | 410 Severn Ave., Suite 210 |
| 16 | Annapolis MD 21403 |
| 17 | |
| 18 | Apricot |
| 19 | Written 1994 by Mark Evans. |
| 20 | This driver is for the Apricot 82596 bus-master interface |
| 21 | |
| 22 | Modularised 12/94 Mark Evans |
| 23 | |
| 24 | Professional Workstation |
| 25 | Derived from apricot.c by Ard van Breemen |
| 26 | <ard@murphy.nl>|<ard@cstmel.hobby.nl>|<ard@cstmel.nl.eu.org> |
| 27 | |
| 28 | Credits: |
| 29 | Thanks to Murphy Software BV for letting me write this in their time. |
| 30 | Well, actually, I get payed doing this... |
| 31 | (Also: see http://www.murphy.nl for murphy, and my homepage ~ard for |
| 32 | more information on the Professional Workstation) |
| 33 | |
| 34 | Present version |
| 35 | aeb@cwi.nl |
| 36 | */ |
| 37 | /* |
| 38 | There are currently two motherboards that I know of in the |
| 39 | professional workstation. The only one that I know is the |
| 40 | intel panther motherboard. -- ard |
| 41 | */ |
| 42 | /* |
| 43 | The pws is equipped with an intel 82596. This is a very intelligent controller |
| 44 | which runs its own micro-code. Communication with the hostprocessor is done |
| 45 | through linked lists of commands and buffers in the hostprocessors memory. |
| 46 | A complete description of the 82596 is available from intel. Search for |
| 47 | a file called "29021806.pdf". It is a complete description of the chip itself. |
| 48 | To use it for the pws some additions are needed regarding generation of |
| 49 | the PORT and CA signal, and the interrupt glue needed for a pc. |
| 50 | I/O map: |
| 51 | PORT SIZE ACTION MEANING |
| 52 | 0xCB0 2 WRITE Lower 16 bits for PORT command |
| 53 | 0xCB2 2 WRITE Upper 16 bits for PORT command, and issue of PORT command |
| 54 | 0xCB4 1 WRITE Generation of CA signal |
| 55 | 0xCB8 1 WRITE Clear interrupt glue |
| 56 | All other communication is through memory! |
| 57 | */ |
| 58 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #include <linux/module.h> |
| 60 | #include <linux/init.h> |
| 61 | #include <linux/delay.h> |
| 62 | #include <linux/kernel.h> |
| 63 | #include <linux/string.h> |
| 64 | #include <linux/errno.h> |
| 65 | #include <linux/ioport.h> |
| 66 | #include <linux/slab.h> |
| 67 | #include <linux/interrupt.h> |
| 68 | #include <linux/netdevice.h> |
| 69 | #include <linux/etherdevice.h> |
| 70 | #include <linux/skbuff.h> |
| 71 | #include <linux/bitops.h> |
| 72 | |
| 73 | #include <asm/io.h> |
| 74 | #include <asm/dma.h> |
| 75 | |
| 76 | #define DRV_NAME "lp486e" |
| 77 | |
| 78 | /* debug print flags */ |
| 79 | #define LOG_SRCDST 0x80000000 |
| 80 | #define LOG_STATINT 0x40000000 |
| 81 | #define LOG_STARTINT 0x20000000 |
| 82 | |
| 83 | #define i596_debug debug |
| 84 | |
| 85 | static int i596_debug = 0; |
| 86 | |
| 87 | static const char * const medianame[] = { |
| 88 | "10baseT", "AUI", |
| 89 | "10baseT-FD", "AUI-FD", |
| 90 | }; |
| 91 | |
| 92 | #define LP486E_TOTAL_SIZE 16 |
| 93 | |
| 94 | #define I596_NULL (0xffffffff) |
| 95 | |
| 96 | #define CMD_EOL 0x8000 /* The last command of the list, stop. */ |
| 97 | #define CMD_SUSP 0x4000 /* Suspend after doing cmd. */ |
| 98 | #define CMD_INTR 0x2000 /* Interrupt after doing cmd. */ |
| 99 | |
| 100 | #define CMD_FLEX 0x0008 /* Enable flexible memory model */ |
| 101 | |
| 102 | enum commands { |
| 103 | CmdNOP = 0, |
| 104 | CmdIASetup = 1, |
| 105 | CmdConfigure = 2, |
| 106 | CmdMulticastList = 3, |
| 107 | CmdTx = 4, |
| 108 | CmdTDR = 5, |
| 109 | CmdDump = 6, |
| 110 | CmdDiagnose = 7 |
| 111 | }; |
| 112 | |
| 113 | #if 0 |
| 114 | static const char *CUcmdnames[8] = { "NOP", "IASetup", "Configure", "MulticastList", |
| 115 | "Tx", "TDR", "Dump", "Diagnose" }; |
| 116 | #endif |
| 117 | |
| 118 | /* Status word bits */ |
| 119 | #define STAT_CX 0x8000 /* The CU finished executing a command |
| 120 | with the Interrupt bit set */ |
| 121 | #define STAT_FR 0x4000 /* The RU finished receiving a frame */ |
| 122 | #define STAT_CNA 0x2000 /* The CU left the active state */ |
| 123 | #define STAT_RNR 0x1000 /* The RU left the active state */ |
| 124 | #define STAT_ACK (STAT_CX | STAT_FR | STAT_CNA | STAT_RNR) |
| 125 | #define STAT_CUS 0x0700 /* Status of CU: 0: idle, 1: suspended, |
| 126 | 2: active, 3-7: unused */ |
| 127 | #define STAT_RUS 0x00f0 /* Status of RU: 0: idle, 1: suspended, |
| 128 | 2: no resources, 4: ready, |
| 129 | 10: no resources due to no more RBDs, |
| 130 | 12: no more RBDs, other: unused */ |
| 131 | #define STAT_T 0x0008 /* Bus throttle timers loaded */ |
| 132 | #define STAT_ZERO 0x0807 /* Always zero */ |
| 133 | |
| 134 | #if 0 |
| 135 | static char *CUstates[8] = { |
| 136 | "idle", "suspended", "active", 0, 0, 0, 0, 0 |
| 137 | }; |
| 138 | static char *RUstates[16] = { |
| 139 | "idle", "suspended", "no resources", 0, "ready", 0, 0, 0, |
| 140 | 0, 0, "no RBDs", 0, "out of RBDs", 0, 0, 0 |
| 141 | }; |
| 142 | |
| 143 | static void |
| 144 | i596_out_status(int status) { |
| 145 | int bad = 0; |
| 146 | char *s; |
| 147 | |
| 148 | printk("status %4.4x:", status); |
| 149 | if (status == 0xffff) |
| 150 | printk(" strange..\n"); |
| 151 | else { |
| 152 | if (status & STAT_CX) |
| 153 | printk(" CU done"); |
| 154 | if (status & STAT_CNA) |
| 155 | printk(" CU stopped"); |
| 156 | if (status & STAT_FR) |
| 157 | printk(" got a frame"); |
| 158 | if (status & STAT_RNR) |
| 159 | printk(" RU stopped"); |
| 160 | if (status & STAT_T) |
| 161 | printk(" throttled"); |
| 162 | if (status & STAT_ZERO) |
| 163 | bad = 1; |
| 164 | s = CUstates[(status & STAT_CUS) >> 8]; |
| 165 | if (!s) |
| 166 | bad = 1; |
| 167 | else |
| 168 | printk(" CU(%s)", s); |
| 169 | s = RUstates[(status & STAT_RUS) >> 4]; |
| 170 | if (!s) |
| 171 | bad = 1; |
| 172 | else |
| 173 | printk(" RU(%s)", s); |
| 174 | if (bad) |
| 175 | printk(" bad status"); |
| 176 | printk("\n"); |
| 177 | } |
| 178 | } |
| 179 | #endif |
| 180 | |
| 181 | /* Command word bits */ |
| 182 | #define ACK_CX 0x8000 |
| 183 | #define ACK_FR 0x4000 |
| 184 | #define ACK_CNA 0x2000 |
| 185 | #define ACK_RNR 0x1000 |
| 186 | |
| 187 | #define CUC_START 0x0100 |
| 188 | #define CUC_RESUME 0x0200 |
| 189 | #define CUC_SUSPEND 0x0300 |
| 190 | #define CUC_ABORT 0x0400 |
| 191 | |
| 192 | #define RX_START 0x0010 |
| 193 | #define RX_RESUME 0x0020 |
| 194 | #define RX_SUSPEND 0x0030 |
| 195 | #define RX_ABORT 0x0040 |
| 196 | |
| 197 | typedef u32 phys_addr; |
| 198 | |
| 199 | static inline phys_addr |
| 200 | va_to_pa(void *x) { |
| 201 | return x ? virt_to_bus(x) : I596_NULL; |
| 202 | } |
| 203 | |
| 204 | static inline void * |
| 205 | pa_to_va(phys_addr x) { |
| 206 | return (x == I596_NULL) ? NULL : bus_to_virt(x); |
| 207 | } |
| 208 | |
| 209 | /* status bits for cmd */ |
| 210 | #define CMD_STAT_C 0x8000 /* CU command complete */ |
| 211 | #define CMD_STAT_B 0x4000 /* CU command in progress */ |
| 212 | #define CMD_STAT_OK 0x2000 /* CU command completed without errors */ |
| 213 | #define CMD_STAT_A 0x1000 /* CU command abnormally terminated */ |
| 214 | |
| 215 | struct i596_cmd { /* 8 bytes */ |
| 216 | unsigned short status; |
| 217 | unsigned short command; |
| 218 | phys_addr pa_next; /* va_to_pa(struct i596_cmd *next) */ |
| 219 | }; |
| 220 | |
| 221 | #define EOF 0x8000 |
| 222 | #define SIZE_MASK 0x3fff |
| 223 | |
| 224 | struct i596_tbd { |
| 225 | unsigned short size; |
| 226 | unsigned short pad; |
| 227 | phys_addr pa_next; /* va_to_pa(struct i596_tbd *next) */ |
| 228 | phys_addr pa_data; /* va_to_pa(char *data) */ |
| 229 | struct sk_buff *skb; |
| 230 | }; |
| 231 | |
| 232 | struct tx_cmd { |
| 233 | struct i596_cmd cmd; |
| 234 | phys_addr pa_tbd; /* va_to_pa(struct i596_tbd *tbd) */ |
| 235 | unsigned short size; |
| 236 | unsigned short pad; |
| 237 | }; |
| 238 | |
| 239 | /* status bits for rfd */ |
| 240 | #define RFD_STAT_C 0x8000 /* Frame reception complete */ |
| 241 | #define RFD_STAT_B 0x4000 /* Frame reception in progress */ |
| 242 | #define RFD_STAT_OK 0x2000 /* Frame received without errors */ |
| 243 | #define RFD_STATUS 0x1fff |
| 244 | #define RFD_LENGTH_ERR 0x1000 |
| 245 | #define RFD_CRC_ERR 0x0800 |
| 246 | #define RFD_ALIGN_ERR 0x0400 |
| 247 | #define RFD_NOBUFS_ERR 0x0200 |
| 248 | #define RFD_DMA_ERR 0x0100 /* DMA overrun failure to acquire system bus */ |
| 249 | #define RFD_SHORT_FRAME_ERR 0x0080 |
| 250 | #define RFD_NOEOP_ERR 0x0040 |
| 251 | #define RFD_TRUNC_ERR 0x0020 |
| 252 | #define RFD_MULTICAST 0x0002 /* 0: destination had our address |
| 253 | 1: destination was broadcast/multicast */ |
| 254 | #define RFD_COLLISION 0x0001 |
| 255 | |
| 256 | /* receive frame descriptor */ |
| 257 | struct i596_rfd { |
| 258 | unsigned short stat; |
| 259 | unsigned short cmd; |
| 260 | phys_addr pa_next; /* va_to_pa(struct i596_rfd *next) */ |
| 261 | phys_addr pa_rbd; /* va_to_pa(struct i596_rbd *rbd) */ |
| 262 | unsigned short count; |
| 263 | unsigned short size; |
| 264 | char data[1532]; |
| 265 | }; |
| 266 | |
| 267 | #define RBD_EL 0x8000 |
| 268 | #define RBD_P 0x4000 |
| 269 | #define RBD_SIZEMASK 0x3fff |
| 270 | #define RBD_EOF 0x8000 |
| 271 | #define RBD_F 0x4000 |
| 272 | |
| 273 | /* receive buffer descriptor */ |
| 274 | struct i596_rbd { |
| 275 | unsigned short size; |
| 276 | unsigned short pad; |
| 277 | phys_addr pa_next; /* va_to_pa(struct i596_tbd *next) */ |
| 278 | phys_addr pa_data; /* va_to_pa(char *data) */ |
| 279 | phys_addr pa_prev; /* va_to_pa(struct i596_tbd *prev) */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 280 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | /* Driver private part */ |
| 282 | struct sk_buff *skb; |
| 283 | }; |
| 284 | |
| 285 | #define RX_RING_SIZE 64 |
| 286 | #define RX_SKBSIZE (ETH_FRAME_LEN+10) |
| 287 | #define RX_RBD_SIZE 32 |
| 288 | |
| 289 | /* System Control Block - 40 bytes */ |
| 290 | struct i596_scb { |
| 291 | u16 status; /* 0 */ |
| 292 | u16 command; /* 2 */ |
| 293 | phys_addr pa_cmd; /* 4 - va_to_pa(struct i596_cmd *cmd) */ |
| 294 | phys_addr pa_rfd; /* 8 - va_to_pa(struct i596_rfd *rfd) */ |
| 295 | u32 crc_err; /* 12 */ |
| 296 | u32 align_err; /* 16 */ |
| 297 | u32 resource_err; /* 20 */ |
| 298 | u32 over_err; /* 24 */ |
| 299 | u32 rcvdt_err; /* 28 */ |
| 300 | u32 short_err; /* 32 */ |
| 301 | u16 t_on; /* 36 */ |
| 302 | u16 t_off; /* 38 */ |
| 303 | }; |
| 304 | |
| 305 | /* Intermediate System Configuration Pointer - 8 bytes */ |
| 306 | struct i596_iscp { |
| 307 | u32 busy; /* 0 */ |
| 308 | phys_addr pa_scb; /* 4 - va_to_pa(struct i596_scb *scb) */ |
| 309 | }; |
| 310 | |
| 311 | /* System Configuration Pointer - 12 bytes */ |
| 312 | struct i596_scp { |
| 313 | u32 sysbus; /* 0 */ |
| 314 | u32 pad; /* 4 */ |
| 315 | phys_addr pa_iscp; /* 8 - va_to_pa(struct i596_iscp *iscp) */ |
| 316 | }; |
| 317 | |
| 318 | /* Selftest and dump results - needs 16-byte alignment */ |
| 319 | /* |
| 320 | * The size of the dump area is 304 bytes. When the dump is executed |
| 321 | * by the Port command an extra word will be appended to the dump area. |
| 322 | * The extra word is a copy of the Dump status word (containing the |
| 323 | * C, B, OK bits). [I find 0xa006, with a0 for C+OK and 6 for dump] |
| 324 | */ |
| 325 | struct i596_dump { |
| 326 | u16 dump[153]; /* (304 = 130h) + 2 bytes */ |
| 327 | }; |
| 328 | |
| 329 | struct i596_private { /* aligned to a 16-byte boundary */ |
| 330 | struct i596_scp scp; /* 0 - needs 16-byte alignment */ |
| 331 | struct i596_iscp iscp; /* 12 */ |
| 332 | struct i596_scb scb; /* 20 */ |
| 333 | u32 dummy; /* 60 */ |
| 334 | struct i596_dump dump; /* 64 - needs 16-byte alignment */ |
| 335 | |
| 336 | struct i596_cmd set_add; |
| 337 | char eth_addr[8]; /* directly follows set_add */ |
| 338 | |
| 339 | struct i596_cmd set_conf; |
| 340 | char i596_config[16]; /* directly follows set_conf */ |
| 341 | |
| 342 | struct i596_cmd tdr; |
| 343 | unsigned long tdr_stat; /* directly follows tdr */ |
| 344 | |
| 345 | int last_restart; |
| 346 | struct i596_rbd *rbd_list; |
| 347 | struct i596_rbd *rbd_tail; |
| 348 | struct i596_rfd *rx_tail; |
| 349 | struct i596_cmd *cmd_tail; |
| 350 | struct i596_cmd *cmd_head; |
| 351 | int cmd_backlog; |
| 352 | unsigned long last_cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | spinlock_t cmd_lock; |
| 354 | }; |
| 355 | |
| 356 | static char init_setup[14] = { |
| 357 | 0x8E, /* length 14 bytes, prefetch on */ |
| 358 | 0xC8, /* default: fifo to 8, monitor off */ |
| 359 | 0x40, /* default: don't save bad frames (apricot.c had 0x80) */ |
| 360 | 0x2E, /* (default is 0x26) |
| 361 | No source address insertion, 8 byte preamble */ |
| 362 | 0x00, /* default priority and backoff */ |
| 363 | 0x60, /* default interframe spacing */ |
| 364 | 0x00, /* default slot time LSB */ |
| 365 | 0xf2, /* default slot time and nr of retries */ |
| 366 | 0x00, /* default various bits |
| 367 | (0: promiscuous mode, 1: broadcast disable, |
| 368 | 2: encoding mode, 3: transmit on no CRS, |
| 369 | 4: no CRC insertion, 5: CRC type, |
| 370 | 6: bit stuffing, 7: padding) */ |
| 371 | 0x00, /* default carrier sense and collision detect */ |
| 372 | 0x40, /* default minimum frame length */ |
| 373 | 0xff, /* (default is 0xff, and that is what apricot.c has; |
| 374 | elp486.c has 0xfb: Enable crc append in memory.) */ |
| 375 | 0x00, /* default: not full duplex */ |
| 376 | 0x7f /* (default is 0x3f) multi IA */ |
| 377 | }; |
| 378 | |
| 379 | static int i596_open(struct net_device *dev); |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 380 | static netdev_tx_t i596_start_xmit(struct sk_buff *skb, struct net_device *dev); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 381 | static irqreturn_t i596_interrupt(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | static int i596_close(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd); |
| 384 | static void print_eth(char *); |
| 385 | static void set_multicast_list(struct net_device *dev); |
| 386 | static void i596_tx_timeout(struct net_device *dev); |
| 387 | |
| 388 | static int |
| 389 | i596_timeout(struct net_device *dev, char *msg, int ct) { |
| 390 | struct i596_private *lp; |
| 391 | int boguscnt = ct; |
| 392 | |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 393 | lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | while (lp->scb.command) { |
| 395 | if (--boguscnt == 0) { |
| 396 | printk("%s: %s timed out - stat %4.4x, cmd %4.4x\n", |
| 397 | dev->name, msg, |
| 398 | lp->scb.status, lp->scb.command); |
| 399 | return 1; |
| 400 | } |
| 401 | udelay(5); |
| 402 | barrier(); |
| 403 | } |
| 404 | return 0; |
| 405 | } |
| 406 | |
| 407 | static inline int |
| 408 | init_rx_bufs(struct net_device *dev, int num) { |
| 409 | struct i596_private *lp; |
| 410 | struct i596_rfd *rfd; |
| 411 | int i; |
| 412 | // struct i596_rbd *rbd; |
| 413 | |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 414 | lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | lp->scb.pa_rfd = I596_NULL; |
| 416 | |
| 417 | for (i = 0; i < num; i++) { |
| 418 | rfd = kmalloc(sizeof(struct i596_rfd), GFP_KERNEL); |
| 419 | if (rfd == NULL) |
| 420 | break; |
| 421 | |
| 422 | rfd->stat = 0; |
| 423 | rfd->pa_rbd = I596_NULL; |
| 424 | rfd->count = 0; |
| 425 | rfd->size = 1532; |
| 426 | if (i == 0) { |
| 427 | rfd->cmd = CMD_EOL; |
| 428 | lp->rx_tail = rfd; |
| 429 | } else { |
| 430 | rfd->cmd = 0; |
| 431 | } |
| 432 | rfd->pa_next = lp->scb.pa_rfd; |
| 433 | lp->scb.pa_rfd = va_to_pa(rfd); |
| 434 | lp->rx_tail->pa_next = lp->scb.pa_rfd; |
| 435 | } |
| 436 | |
| 437 | #if 0 |
| 438 | for (i = 0; i<RX_RBD_SIZE; i++) { |
| 439 | rbd = kmalloc(sizeof(struct i596_rbd), GFP_KERNEL); |
| 440 | if (rbd) { |
| 441 | rbd->pad = 0; |
| 442 | rbd->count = 0; |
Jeff Garzik | 8ce9090 | 2006-09-21 00:06:21 -0400 | [diff] [blame] | 443 | rbd->skb = dev_alloc_skb(RX_SKBSIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | if (!rbd->skb) { |
| 445 | printk("dev_alloc_skb failed"); |
| 446 | } |
| 447 | rbd->next = rfd->rbd; |
| 448 | if (i) { |
| 449 | rfd->rbd->prev = rbd; |
Jeff Garzik | 8ce9090 | 2006-09-21 00:06:21 -0400 | [diff] [blame] | 450 | rbd->size = RX_SKBSIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | } else { |
Jeff Garzik | 8ce9090 | 2006-09-21 00:06:21 -0400 | [diff] [blame] | 452 | rbd->size = (RX_SKBSIZE | RBD_EL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | lp->rbd_tail = rbd; |
| 454 | } |
| 455 | |
| 456 | rfd->rbd = rbd; |
| 457 | } else { |
| 458 | printk("Could not kmalloc rbd\n"); |
| 459 | } |
| 460 | } |
| 461 | lp->rbd_tail->next = rfd->rbd; |
| 462 | #endif |
Eric Dumazet | 807540b | 2010-09-23 05:40:09 +0000 | [diff] [blame^] | 463 | return i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | } |
| 465 | |
| 466 | static inline void |
| 467 | remove_rx_bufs(struct net_device *dev) { |
| 468 | struct i596_private *lp; |
| 469 | struct i596_rfd *rfd; |
| 470 | |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 471 | lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | lp->rx_tail->pa_next = I596_NULL; |
| 473 | |
| 474 | do { |
| 475 | rfd = pa_to_va(lp->scb.pa_rfd); |
| 476 | lp->scb.pa_rfd = rfd->pa_next; |
| 477 | kfree(rfd); |
| 478 | } while (rfd != lp->rx_tail); |
| 479 | |
| 480 | lp->rx_tail = NULL; |
| 481 | |
| 482 | #if 0 |
| 483 | for (lp->rbd_list) { |
| 484 | } |
| 485 | #endif |
| 486 | } |
| 487 | |
| 488 | #define PORT_RESET 0x00 /* reset 82596 */ |
| 489 | #define PORT_SELFTEST 0x01 /* selftest */ |
| 490 | #define PORT_ALTSCP 0x02 /* alternate SCB address */ |
| 491 | #define PORT_DUMP 0x03 /* dump */ |
| 492 | |
| 493 | #define IOADDR 0xcb0 /* real constant */ |
| 494 | #define IRQ 10 /* default IRQ - can be changed by ECU */ |
| 495 | |
| 496 | /* The 82596 requires two 16-bit write cycles for a port command */ |
| 497 | static inline void |
| 498 | PORT(phys_addr a, unsigned int cmd) { |
| 499 | if (a & 0xf) |
| 500 | printk("lp486e.c: PORT: address not aligned\n"); |
| 501 | outw(((a & 0xffff) | cmd), IOADDR); |
| 502 | outw(((a>>16) & 0xffff), IOADDR+2); |
| 503 | } |
| 504 | |
| 505 | static inline void |
| 506 | CA(void) { |
| 507 | outb(0, IOADDR+4); |
| 508 | udelay(8); |
| 509 | } |
| 510 | |
| 511 | static inline void |
| 512 | CLEAR_INT(void) { |
| 513 | outb(0, IOADDR+8); |
| 514 | } |
| 515 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | #if 0 |
| 517 | /* selftest or dump */ |
| 518 | static void |
| 519 | i596_port_do(struct net_device *dev, int portcmd, char *cmdname) { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 520 | struct i596_private *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | u16 *outp; |
| 522 | int i, m; |
| 523 | |
| 524 | memset((void *)&(lp->dump), 0, sizeof(struct i596_dump)); |
| 525 | outp = &(lp->dump.dump[0]); |
| 526 | |
| 527 | PORT(va_to_pa(outp), portcmd); |
| 528 | mdelay(30); /* random, unmotivated */ |
| 529 | |
| 530 | printk("lp486e i82596 %s result:\n", cmdname); |
Denis Cheng | ff8ac60 | 2007-09-02 18:30:18 +0800 | [diff] [blame] | 531 | for (m = ARRAY_SIZE(lp->dump.dump); m && lp->dump.dump[m-1] == 0; m--) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | ; |
| 533 | for (i = 0; i < m; i++) { |
| 534 | printk(" %04x", lp->dump.dump[i]); |
| 535 | if (i%8 == 7) |
| 536 | printk("\n"); |
| 537 | } |
| 538 | printk("\n"); |
| 539 | } |
| 540 | #endif |
| 541 | |
| 542 | static int |
| 543 | i596_scp_setup(struct net_device *dev) { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 544 | struct i596_private *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | int boguscnt; |
| 546 | |
| 547 | /* Setup SCP, ISCP, SCB */ |
| 548 | /* |
| 549 | * sysbus bits: |
| 550 | * only a single byte is significant - here 0x44 |
| 551 | * 0x80: big endian mode (details depend on stepping) |
| 552 | * 0x40: 1 |
| 553 | * 0x20: interrupt pin is active low |
| 554 | * 0x10: lock function disabled |
| 555 | * 0x08: external triggering of bus throttle timers |
| 556 | * 0x06: 00: 82586 compat mode, 01: segmented mode, 10: linear mode |
| 557 | * 0x01: unused |
| 558 | */ |
| 559 | lp->scp.sysbus = 0x00440000; /* linear mode */ |
| 560 | lp->scp.pad = 0; /* must be zero */ |
| 561 | lp->scp.pa_iscp = va_to_pa(&(lp->iscp)); |
| 562 | |
| 563 | /* |
| 564 | * The CPU sets the ISCP to 1 before it gives the first CA() |
| 565 | */ |
| 566 | lp->iscp.busy = 0x0001; |
| 567 | lp->iscp.pa_scb = va_to_pa(&(lp->scb)); |
| 568 | |
| 569 | lp->scb.command = 0; |
| 570 | lp->scb.status = 0; |
| 571 | lp->scb.pa_cmd = I596_NULL; |
| 572 | /* lp->scb.pa_rfd has been initialised already */ |
| 573 | |
| 574 | lp->last_cmd = jiffies; |
| 575 | lp->cmd_backlog = 0; |
| 576 | lp->cmd_head = NULL; |
| 577 | |
| 578 | /* |
| 579 | * Reset the 82596. |
| 580 | * We need to wait 10 systemclock cycles, and |
| 581 | * 5 serial clock cycles. |
| 582 | */ |
| 583 | PORT(0, PORT_RESET); /* address part ignored */ |
| 584 | udelay(100); |
| 585 | |
| 586 | /* |
| 587 | * Before the CA signal is asserted, the default SCP address |
| 588 | * (0x00fffff4) can be changed to a 16-byte aligned value |
| 589 | */ |
| 590 | PORT(va_to_pa(&lp->scp), PORT_ALTSCP); /* change the scp address */ |
| 591 | |
| 592 | /* |
| 593 | * The initialization procedure begins when a |
| 594 | * Channel Attention signal is asserted after a reset. |
| 595 | */ |
| 596 | |
| 597 | CA(); |
| 598 | |
| 599 | /* |
| 600 | * The ISCP busy is cleared by the 82596 after the SCB address is read. |
| 601 | */ |
| 602 | boguscnt = 100; |
| 603 | while (lp->iscp.busy) { |
| 604 | if (--boguscnt == 0) { |
| 605 | /* No i82596 present? */ |
| 606 | printk("%s: i82596 initialization timed out\n", |
| 607 | dev->name); |
| 608 | return 1; |
| 609 | } |
| 610 | udelay(5); |
| 611 | barrier(); |
| 612 | } |
| 613 | /* I find here boguscnt==100, so no delay was required. */ |
| 614 | |
| 615 | return 0; |
| 616 | } |
| 617 | |
| 618 | static int |
| 619 | init_i596(struct net_device *dev) { |
| 620 | struct i596_private *lp; |
| 621 | |
| 622 | if (i596_scp_setup(dev)) |
| 623 | return 1; |
| 624 | |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 625 | lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | lp->scb.command = 0; |
| 627 | |
| 628 | memcpy ((void *)lp->i596_config, init_setup, 14); |
| 629 | lp->set_conf.command = CmdConfigure; |
| 630 | i596_add_cmd(dev, (void *)&lp->set_conf); |
| 631 | |
| 632 | memcpy ((void *)lp->eth_addr, dev->dev_addr, 6); |
| 633 | lp->set_add.command = CmdIASetup; |
| 634 | i596_add_cmd(dev, (struct i596_cmd *)&lp->set_add); |
| 635 | |
| 636 | lp->tdr.command = CmdTDR; |
| 637 | i596_add_cmd(dev, (struct i596_cmd *)&lp->tdr); |
| 638 | |
| 639 | if (lp->scb.command && i596_timeout(dev, "i82596 init", 200)) |
| 640 | return 1; |
| 641 | |
| 642 | lp->scb.command = RX_START; |
| 643 | CA(); |
| 644 | |
| 645 | barrier(); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 646 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | if (lp->scb.command && i596_timeout(dev, "Receive Unit start", 100)) |
| 648 | return 1; |
| 649 | |
| 650 | return 0; |
| 651 | } |
| 652 | |
| 653 | /* Receive a single frame */ |
| 654 | static inline int |
| 655 | i596_rx_one(struct net_device *dev, struct i596_private *lp, |
| 656 | struct i596_rfd *rfd, int *frames) { |
| 657 | |
| 658 | if (rfd->stat & RFD_STAT_OK) { |
| 659 | /* a good frame */ |
| 660 | int pkt_len = (rfd->count & 0x3fff); |
| 661 | struct sk_buff *skb = dev_alloc_skb(pkt_len); |
| 662 | |
| 663 | (*frames)++; |
| 664 | |
| 665 | if (rfd->cmd & CMD_EOL) |
| 666 | printk("Received on EOL\n"); |
| 667 | |
| 668 | if (skb == NULL) { |
| 669 | printk ("%s: i596_rx Memory squeeze, " |
| 670 | "dropping packet.\n", dev->name); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 671 | dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | return 1; |
| 673 | } |
| 674 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | memcpy(skb_put(skb,pkt_len), rfd->data, pkt_len); |
| 676 | |
| 677 | skb->protocol = eth_type_trans(skb,dev); |
| 678 | netif_rx(skb); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 679 | dev->stats.rx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | } else { |
| 681 | #if 0 |
| 682 | printk("Frame reception error status %04x\n", |
| 683 | rfd->stat); |
| 684 | #endif |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 685 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | if (rfd->stat & RFD_COLLISION) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 687 | dev->stats.collisions++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | if (rfd->stat & RFD_SHORT_FRAME_ERR) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 689 | dev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | if (rfd->stat & RFD_DMA_ERR) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 691 | dev->stats.rx_over_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | if (rfd->stat & RFD_NOBUFS_ERR) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 693 | dev->stats.rx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | if (rfd->stat & RFD_ALIGN_ERR) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 695 | dev->stats.rx_frame_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | if (rfd->stat & RFD_CRC_ERR) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 697 | dev->stats.rx_crc_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | if (rfd->stat & RFD_LENGTH_ERR) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 699 | dev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | } |
| 701 | rfd->stat = rfd->count = 0; |
| 702 | return 0; |
| 703 | } |
| 704 | |
| 705 | static int |
| 706 | i596_rx(struct net_device *dev) { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 707 | struct i596_private *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | struct i596_rfd *rfd; |
| 709 | int frames = 0; |
| 710 | |
| 711 | while (1) { |
| 712 | rfd = pa_to_va(lp->scb.pa_rfd); |
| 713 | if (!rfd) { |
| 714 | printk(KERN_ERR "i596_rx: NULL rfd?\n"); |
| 715 | return 0; |
| 716 | } |
| 717 | #if 1 |
| 718 | if (rfd->stat && !(rfd->stat & (RFD_STAT_C | RFD_STAT_B))) |
| 719 | printk("SF:%p-%04x\n", rfd, rfd->stat); |
| 720 | #endif |
| 721 | if (!(rfd->stat & RFD_STAT_C)) |
| 722 | break; /* next one not ready */ |
| 723 | if (i596_rx_one(dev, lp, rfd, &frames)) |
| 724 | break; /* out of memory */ |
| 725 | rfd->cmd = CMD_EOL; |
| 726 | lp->rx_tail->cmd = 0; |
| 727 | lp->rx_tail = rfd; |
| 728 | lp->scb.pa_rfd = rfd->pa_next; |
| 729 | barrier(); |
| 730 | } |
| 731 | |
| 732 | return frames; |
| 733 | } |
| 734 | |
| 735 | static void |
| 736 | i596_cleanup_cmd(struct net_device *dev) { |
| 737 | struct i596_private *lp; |
| 738 | struct i596_cmd *cmd; |
| 739 | |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 740 | lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | while (lp->cmd_head) { |
| 742 | cmd = (struct i596_cmd *)lp->cmd_head; |
| 743 | |
| 744 | lp->cmd_head = pa_to_va(lp->cmd_head->pa_next); |
| 745 | lp->cmd_backlog--; |
| 746 | |
| 747 | switch ((cmd->command) & 0x7) { |
| 748 | case CmdTx: { |
| 749 | struct tx_cmd *tx_cmd = (struct tx_cmd *) cmd; |
| 750 | struct i596_tbd * tx_cmd_tbd; |
| 751 | tx_cmd_tbd = pa_to_va(tx_cmd->pa_tbd); |
| 752 | |
| 753 | dev_kfree_skb_any(tx_cmd_tbd->skb); |
| 754 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 755 | dev->stats.tx_errors++; |
| 756 | dev->stats.tx_aborted_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | |
| 758 | cmd->pa_next = I596_NULL; |
| 759 | kfree((unsigned char *)tx_cmd); |
| 760 | netif_wake_queue(dev); |
| 761 | break; |
| 762 | } |
| 763 | case CmdMulticastList: { |
| 764 | // unsigned short count = *((unsigned short *) (ptr + 1)); |
| 765 | |
| 766 | cmd->pa_next = I596_NULL; |
| 767 | kfree((unsigned char *)cmd); |
| 768 | break; |
| 769 | } |
| 770 | default: { |
| 771 | cmd->pa_next = I596_NULL; |
| 772 | break; |
| 773 | } |
| 774 | } |
| 775 | barrier(); |
| 776 | } |
| 777 | |
| 778 | if (lp->scb.command && i596_timeout(dev, "i596_cleanup_cmd", 100)) |
| 779 | ; |
| 780 | |
| 781 | lp->scb.pa_cmd = va_to_pa(lp->cmd_head); |
| 782 | } |
| 783 | |
| 784 | static void i596_reset(struct net_device *dev, struct i596_private *lp, int ioaddr) { |
| 785 | |
| 786 | if (lp->scb.command && i596_timeout(dev, "i596_reset", 100)) |
| 787 | ; |
| 788 | |
| 789 | netif_stop_queue(dev); |
| 790 | |
| 791 | lp->scb.command = CUC_ABORT | RX_ABORT; |
| 792 | CA(); |
| 793 | barrier(); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 794 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | /* wait for shutdown */ |
| 796 | if (lp->scb.command && i596_timeout(dev, "i596_reset(2)", 400)) |
| 797 | ; |
| 798 | |
| 799 | i596_cleanup_cmd(dev); |
| 800 | i596_rx(dev); |
| 801 | |
| 802 | netif_start_queue(dev); |
| 803 | /*dev_kfree_skb(skb, FREE_WRITE);*/ |
| 804 | init_i596(dev); |
| 805 | } |
| 806 | |
| 807 | static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd) { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 808 | struct i596_private *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | int ioaddr = dev->base_addr; |
| 810 | unsigned long flags; |
| 811 | |
| 812 | cmd->status = 0; |
| 813 | cmd->command |= (CMD_EOL | CMD_INTR); |
| 814 | cmd->pa_next = I596_NULL; |
| 815 | |
| 816 | spin_lock_irqsave(&lp->cmd_lock, flags); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 817 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | if (lp->cmd_head) { |
| 819 | lp->cmd_tail->pa_next = va_to_pa(cmd); |
| 820 | } else { |
| 821 | lp->cmd_head = cmd; |
| 822 | if (lp->scb.command && i596_timeout(dev, "i596_add_cmd", 100)) |
| 823 | ; |
| 824 | lp->scb.pa_cmd = va_to_pa(cmd); |
| 825 | lp->scb.command = CUC_START; |
| 826 | CA(); |
| 827 | } |
| 828 | lp->cmd_tail = cmd; |
| 829 | lp->cmd_backlog++; |
| 830 | |
| 831 | lp->cmd_head = pa_to_va(lp->scb.pa_cmd); |
| 832 | spin_unlock_irqrestore(&lp->cmd_lock, flags); |
| 833 | |
| 834 | if (lp->cmd_backlog > 16) { |
| 835 | int tickssofar = jiffies - lp->last_cmd; |
| 836 | if (tickssofar < HZ/4) |
| 837 | return; |
| 838 | |
| 839 | printk(KERN_WARNING "%s: command unit timed out, status resetting.\n", dev->name); |
| 840 | i596_reset(dev, lp, ioaddr); |
| 841 | } |
| 842 | } |
| 843 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 844 | static int i596_open(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | { |
| 846 | int i; |
| 847 | |
Joe Perches | a0607fd | 2009-11-18 23:29:17 -0800 | [diff] [blame] | 848 | i = request_irq(dev->irq, i596_interrupt, IRQF_SHARED, dev->name, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | if (i) { |
| 850 | printk(KERN_ERR "%s: IRQ %d not free\n", dev->name, dev->irq); |
| 851 | return i; |
| 852 | } |
| 853 | |
| 854 | if ((i = init_rx_bufs(dev, RX_RING_SIZE)) < RX_RING_SIZE) |
| 855 | printk(KERN_ERR "%s: only able to allocate %d receive buffers\n", dev->name, i); |
| 856 | |
| 857 | if (i < 4) { |
| 858 | free_irq(dev->irq, dev); |
| 859 | return -EAGAIN; |
| 860 | } |
| 861 | netif_start_queue(dev); |
| 862 | init_i596(dev); |
| 863 | return 0; /* Always succeed */ |
| 864 | } |
| 865 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 866 | static netdev_tx_t i596_start_xmit (struct sk_buff *skb, struct net_device *dev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | struct tx_cmd *tx_cmd; |
| 868 | short length; |
| 869 | |
| 870 | length = skb->len; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 871 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | if (length < ETH_ZLEN) { |
Herbert Xu | 5b057c6 | 2006-06-23 02:06:41 -0700 | [diff] [blame] | 873 | if (skb_padto(skb, ETH_ZLEN)) |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 874 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | length = ETH_ZLEN; |
| 876 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 877 | |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 878 | tx_cmd = kmalloc((sizeof (struct tx_cmd) + sizeof (struct i596_tbd)), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | if (tx_cmd == NULL) { |
| 880 | printk(KERN_WARNING "%s: i596_xmit Memory squeeze, dropping packet.\n", dev->name); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 881 | dev->stats.tx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | dev_kfree_skb (skb); |
| 883 | } else { |
| 884 | struct i596_tbd *tx_cmd_tbd; |
| 885 | tx_cmd_tbd = (struct i596_tbd *) (tx_cmd + 1); |
| 886 | tx_cmd->pa_tbd = va_to_pa (tx_cmd_tbd); |
| 887 | tx_cmd_tbd->pa_next = I596_NULL; |
| 888 | |
| 889 | tx_cmd->cmd.command = (CMD_FLEX | CmdTx); |
| 890 | |
| 891 | tx_cmd->pad = 0; |
| 892 | tx_cmd->size = 0; |
| 893 | tx_cmd_tbd->pad = 0; |
| 894 | tx_cmd_tbd->size = (EOF | length); |
| 895 | |
| 896 | tx_cmd_tbd->pa_data = va_to_pa (skb->data); |
| 897 | tx_cmd_tbd->skb = skb; |
| 898 | |
| 899 | if (i596_debug & LOG_SRCDST) |
| 900 | print_eth (skb->data); |
| 901 | |
| 902 | i596_add_cmd (dev, (struct i596_cmd *) tx_cmd); |
| 903 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 904 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | } |
| 906 | |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 907 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | } |
| 909 | |
| 910 | static void |
| 911 | i596_tx_timeout (struct net_device *dev) { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 912 | struct i596_private *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | int ioaddr = dev->base_addr; |
| 914 | |
| 915 | /* Transmitter timeout, serious problems. */ |
| 916 | printk(KERN_WARNING "%s: transmit timed out, status resetting.\n", dev->name); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 917 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | |
| 919 | /* Try to restart the adaptor */ |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 920 | if (lp->last_restart == dev->stats.tx_packets) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | printk ("Resetting board.\n"); |
| 922 | |
| 923 | /* Shutdown and restart */ |
| 924 | i596_reset (dev, lp, ioaddr); |
| 925 | } else { |
| 926 | /* Issue a channel attention signal */ |
| 927 | printk ("Kicking board.\n"); |
| 928 | lp->scb.command = (CUC_START | RX_START); |
| 929 | CA(); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 930 | lp->last_restart = dev->stats.tx_packets; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | } |
| 932 | netif_wake_queue(dev); |
| 933 | } |
| 934 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 935 | static void print_eth(char *add) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | { |
| 937 | int i; |
| 938 | |
| 939 | printk ("Dest "); |
| 940 | for (i = 0; i < 6; i++) |
| 941 | printk(" %2.2X", (unsigned char) add[i]); |
| 942 | printk ("\n"); |
| 943 | |
| 944 | printk ("Source"); |
| 945 | for (i = 0; i < 6; i++) |
| 946 | printk(" %2.2X", (unsigned char) add[i+6]); |
| 947 | printk ("\n"); |
| 948 | |
| 949 | printk ("type %2.2X%2.2X\n", |
| 950 | (unsigned char) add[12], (unsigned char) add[13]); |
| 951 | } |
| 952 | |
Stephen Hemminger | 635d8ba | 2009-03-26 15:11:42 +0000 | [diff] [blame] | 953 | static const struct net_device_ops i596_netdev_ops = { |
| 954 | .ndo_open = i596_open, |
| 955 | .ndo_stop = i596_close, |
| 956 | .ndo_start_xmit = i596_start_xmit, |
| 957 | .ndo_set_multicast_list = set_multicast_list, |
| 958 | .ndo_tx_timeout = i596_tx_timeout, |
| 959 | .ndo_change_mtu = eth_change_mtu, |
| 960 | .ndo_set_mac_address = eth_mac_addr, |
| 961 | .ndo_validate_addr = eth_validate_addr, |
| 962 | }; |
| 963 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | static int __init lp486e_probe(struct net_device *dev) { |
| 965 | struct i596_private *lp; |
| 966 | unsigned char eth_addr[6] = { 0, 0xaa, 0, 0, 0, 0 }; |
| 967 | unsigned char *bios; |
| 968 | int i, j; |
| 969 | int ret = -ENOMEM; |
| 970 | static int probed; |
| 971 | |
| 972 | if (probed) |
| 973 | return -ENODEV; |
| 974 | probed++; |
| 975 | |
| 976 | if (!request_region(IOADDR, LP486E_TOTAL_SIZE, DRV_NAME)) { |
| 977 | printk(KERN_ERR "lp486e: IO address 0x%x in use\n", IOADDR); |
| 978 | return -EBUSY; |
| 979 | } |
| 980 | |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 981 | lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | spin_lock_init(&lp->cmd_lock); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 983 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | /* |
| 985 | * Do we really have this thing? |
| 986 | */ |
| 987 | if (i596_scp_setup(dev)) { |
| 988 | ret = -ENODEV; |
| 989 | goto err_out_kfree; |
| 990 | } |
| 991 | |
| 992 | dev->base_addr = IOADDR; |
| 993 | dev->irq = IRQ; |
| 994 | |
| 995 | |
| 996 | /* |
| 997 | * How do we find the ethernet address? I don't know. |
| 998 | * One possibility is to look at the EISA configuration area |
| 999 | * [0xe8000-0xe9fff]. This contains the ethernet address |
| 1000 | * but not at a fixed address - things depend on setup options. |
| 1001 | * |
| 1002 | * If we find no address, or the wrong address, use |
| 1003 | * ifconfig eth0 hw ether a1:a2:a3:a4:a5:a6 |
| 1004 | * with the value found in the BIOS setup. |
| 1005 | */ |
| 1006 | bios = bus_to_virt(0xe8000); |
| 1007 | for (j = 0; j < 0x2000; j++) { |
| 1008 | if (bios[j] == 0 && bios[j+1] == 0xaa && bios[j+2] == 0) { |
| 1009 | printk("%s: maybe address at BIOS 0x%x:", |
| 1010 | dev->name, 0xe8000+j); |
| 1011 | for (i = 0; i < 6; i++) { |
| 1012 | eth_addr[i] = bios[i+j]; |
| 1013 | printk(" %2.2X", eth_addr[i]); |
| 1014 | } |
| 1015 | printk("\n"); |
| 1016 | } |
| 1017 | } |
| 1018 | |
| 1019 | printk("%s: lp486e 82596 at %#3lx, IRQ %d,", |
| 1020 | dev->name, dev->base_addr, dev->irq); |
| 1021 | for (i = 0; i < 6; i++) |
| 1022 | printk(" %2.2X", dev->dev_addr[i] = eth_addr[i]); |
| 1023 | printk("\n"); |
| 1024 | |
| 1025 | /* The LP486E-specific entries in the device structure. */ |
Stephen Hemminger | 635d8ba | 2009-03-26 15:11:42 +0000 | [diff] [blame] | 1026 | dev->netdev_ops = &i596_netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | dev->watchdog_timeo = 5*HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | |
| 1029 | #if 0 |
| 1030 | /* selftest reports 0x320925ae - don't know what that means */ |
| 1031 | i596_port_do(dev, PORT_SELFTEST, "selftest"); |
| 1032 | i596_port_do(dev, PORT_DUMP, "dump"); |
| 1033 | #endif |
| 1034 | return 0; |
| 1035 | |
| 1036 | err_out_kfree: |
| 1037 | release_region(IOADDR, LP486E_TOTAL_SIZE); |
| 1038 | return ret; |
| 1039 | } |
| 1040 | |
| 1041 | static inline void |
| 1042 | i596_handle_CU_completion(struct net_device *dev, |
| 1043 | struct i596_private *lp, |
| 1044 | unsigned short status, |
| 1045 | unsigned short *ack_cmdp) { |
| 1046 | struct i596_cmd *cmd; |
| 1047 | int frames_out = 0; |
| 1048 | int commands_done = 0; |
| 1049 | int cmd_val; |
| 1050 | unsigned long flags; |
| 1051 | |
| 1052 | spin_lock_irqsave(&lp->cmd_lock, flags); |
| 1053 | cmd = lp->cmd_head; |
| 1054 | |
| 1055 | while (lp->cmd_head && (lp->cmd_head->status & CMD_STAT_C)) { |
| 1056 | cmd = lp->cmd_head; |
| 1057 | |
| 1058 | lp->cmd_head = pa_to_va(lp->cmd_head->pa_next); |
| 1059 | lp->cmd_backlog--; |
| 1060 | |
| 1061 | commands_done++; |
| 1062 | cmd_val = cmd->command & 0x7; |
| 1063 | #if 0 |
| 1064 | printk("finished CU %s command (%d)\n", |
| 1065 | CUcmdnames[cmd_val], cmd_val); |
| 1066 | #endif |
| 1067 | switch (cmd_val) { |
| 1068 | case CmdTx: |
| 1069 | { |
| 1070 | struct tx_cmd *tx_cmd; |
| 1071 | struct i596_tbd *tx_cmd_tbd; |
| 1072 | |
| 1073 | tx_cmd = (struct tx_cmd *) cmd; |
| 1074 | tx_cmd_tbd = pa_to_va(tx_cmd->pa_tbd); |
| 1075 | |
| 1076 | frames_out++; |
| 1077 | if (cmd->status & CMD_STAT_OK) { |
| 1078 | if (i596_debug) |
| 1079 | print_eth(pa_to_va(tx_cmd_tbd->pa_data)); |
| 1080 | } else { |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1081 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | if (i596_debug) |
| 1083 | printk("transmission failure:%04x\n", |
| 1084 | cmd->status); |
| 1085 | if (cmd->status & 0x0020) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1086 | dev->stats.collisions++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | if (!(cmd->status & 0x0040)) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1088 | dev->stats.tx_heartbeat_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | if (cmd->status & 0x0400) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1090 | dev->stats.tx_carrier_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | if (cmd->status & 0x0800) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1092 | dev->stats.collisions++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | if (cmd->status & 0x1000) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1094 | dev->stats.tx_aborted_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | } |
| 1096 | dev_kfree_skb_irq(tx_cmd_tbd->skb); |
| 1097 | |
| 1098 | cmd->pa_next = I596_NULL; |
| 1099 | kfree((unsigned char *)tx_cmd); |
| 1100 | netif_wake_queue(dev); |
| 1101 | break; |
| 1102 | } |
| 1103 | |
| 1104 | case CmdMulticastList: |
| 1105 | cmd->pa_next = I596_NULL; |
| 1106 | kfree((unsigned char *)cmd); |
| 1107 | break; |
| 1108 | |
| 1109 | case CmdTDR: |
| 1110 | { |
| 1111 | unsigned long status = *((unsigned long *) (cmd + 1)); |
| 1112 | if (status & 0x8000) { |
| 1113 | if (i596_debug) |
| 1114 | printk("%s: link ok.\n", dev->name); |
| 1115 | } else { |
| 1116 | if (status & 0x4000) |
| 1117 | printk("%s: Transceiver problem.\n", |
| 1118 | dev->name); |
| 1119 | if (status & 0x2000) |
| 1120 | printk("%s: Termination problem.\n", |
| 1121 | dev->name); |
| 1122 | if (status & 0x1000) |
| 1123 | printk("%s: Short circuit.\n", |
| 1124 | dev->name); |
| 1125 | printk("%s: Time %ld.\n", |
| 1126 | dev->name, status & 0x07ff); |
| 1127 | } |
| 1128 | } |
| 1129 | default: |
| 1130 | cmd->pa_next = I596_NULL; |
| 1131 | lp->last_cmd = jiffies; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1132 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | } |
| 1134 | barrier(); |
| 1135 | } |
| 1136 | |
| 1137 | cmd = lp->cmd_head; |
| 1138 | while (cmd && (cmd != lp->cmd_tail)) { |
| 1139 | cmd->command &= 0x1fff; |
| 1140 | cmd = pa_to_va(cmd->pa_next); |
| 1141 | barrier(); |
| 1142 | } |
| 1143 | |
| 1144 | if (lp->cmd_head) |
| 1145 | *ack_cmdp |= CUC_START; |
| 1146 | lp->scb.pa_cmd = va_to_pa(lp->cmd_head); |
| 1147 | spin_unlock_irqrestore(&lp->cmd_lock, flags); |
| 1148 | } |
| 1149 | |
| 1150 | static irqreturn_t |
Jeff Garzik | cba0516 | 2007-11-23 21:50:34 -0500 | [diff] [blame] | 1151 | i596_interrupt(int irq, void *dev_instance) |
Jeff Garzik | 28fc1f5 | 2007-10-29 05:46:16 -0400 | [diff] [blame] | 1152 | { |
| 1153 | struct net_device *dev = dev_instance; |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1154 | struct i596_private *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | unsigned short status, ack_cmd = 0; |
| 1156 | int frames_in = 0; |
| 1157 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | /* |
| 1159 | * The 82596 examines the command, performs the required action, |
| 1160 | * and then clears the SCB command word. |
| 1161 | */ |
| 1162 | if (lp->scb.command && i596_timeout(dev, "interrupt", 40)) |
| 1163 | ; |
| 1164 | |
| 1165 | /* |
| 1166 | * The status word indicates the status of the 82596. |
| 1167 | * It is modified only by the 82596. |
| 1168 | * |
| 1169 | * [So, we must not clear it. I find often status 0xffff, |
| 1170 | * which is not one of the values allowed by the docs.] |
| 1171 | */ |
| 1172 | status = lp->scb.status; |
| 1173 | #if 0 |
| 1174 | if (i596_debug) { |
| 1175 | printk("%s: i596 interrupt, ", dev->name); |
| 1176 | i596_out_status(status); |
| 1177 | } |
| 1178 | #endif |
| 1179 | /* Impossible, but it happens - perhaps when we get |
| 1180 | a receive interrupt but scb.pa_rfd is I596_NULL. */ |
| 1181 | if (status == 0xffff) { |
| 1182 | printk("%s: i596_interrupt: got status 0xffff\n", dev->name); |
| 1183 | goto out; |
| 1184 | } |
| 1185 | |
| 1186 | ack_cmd = (status & STAT_ACK); |
| 1187 | |
| 1188 | if (status & (STAT_CX | STAT_CNA)) |
| 1189 | i596_handle_CU_completion(dev, lp, status, &ack_cmd); |
| 1190 | |
| 1191 | if (status & (STAT_FR | STAT_RNR)) { |
| 1192 | /* Restart the receive unit when it got inactive somehow */ |
| 1193 | if ((status & STAT_RNR) && netif_running(dev)) |
| 1194 | ack_cmd |= RX_START; |
| 1195 | |
| 1196 | if (status & STAT_FR) { |
| 1197 | frames_in = i596_rx(dev); |
| 1198 | if (!frames_in) |
| 1199 | printk("receive frame reported, but no frames\n"); |
| 1200 | } |
| 1201 | } |
| 1202 | |
| 1203 | /* acknowledge the interrupt */ |
| 1204 | /* |
| 1205 | if ((lp->scb.pa_cmd != I596_NULL) && netif_running(dev)) |
| 1206 | ack_cmd |= CUC_START; |
| 1207 | */ |
| 1208 | |
| 1209 | if (lp->scb.command && i596_timeout(dev, "i596 interrupt", 100)) |
| 1210 | ; |
| 1211 | |
| 1212 | lp->scb.command = ack_cmd; |
| 1213 | |
| 1214 | CLEAR_INT(); |
| 1215 | CA(); |
| 1216 | |
| 1217 | out: |
| 1218 | return IRQ_HANDLED; |
| 1219 | } |
| 1220 | |
| 1221 | static int i596_close(struct net_device *dev) { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1222 | struct i596_private *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | |
| 1224 | netif_stop_queue(dev); |
| 1225 | |
| 1226 | if (i596_debug) |
| 1227 | printk("%s: Shutting down ethercard, status was %4.4x.\n", |
| 1228 | dev->name, lp->scb.status); |
| 1229 | |
| 1230 | lp->scb.command = (CUC_ABORT | RX_ABORT); |
| 1231 | CA(); |
| 1232 | |
| 1233 | i596_cleanup_cmd(dev); |
| 1234 | |
| 1235 | if (lp->scb.command && i596_timeout(dev, "i596_close", 200)) |
| 1236 | ; |
| 1237 | |
| 1238 | free_irq(dev->irq, dev); |
| 1239 | remove_rx_bufs(dev); |
| 1240 | |
| 1241 | return 0; |
| 1242 | } |
| 1243 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | /* |
| 1245 | * Set or clear the multicast filter for this adaptor. |
| 1246 | */ |
| 1247 | |
| 1248 | static void set_multicast_list(struct net_device *dev) { |
Wang Chen | 454d7c9 | 2008-11-12 23:37:49 -0800 | [diff] [blame] | 1249 | struct i596_private *lp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | struct i596_cmd *cmd; |
| 1251 | |
| 1252 | if (i596_debug > 1) |
| 1253 | printk ("%s: set multicast list %d\n", |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1254 | dev->name, netdev_mc_count(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1256 | if (!netdev_mc_empty(dev)) { |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1257 | struct netdev_hw_addr *ha; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | char *cp; |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1259 | cmd = kmalloc(sizeof(struct i596_cmd) + 2 + |
| 1260 | netdev_mc_count(dev) * 6, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | if (cmd == NULL) { |
| 1262 | printk (KERN_ERR "%s: set_multicast Memory squeeze.\n", dev->name); |
| 1263 | return; |
| 1264 | } |
| 1265 | cmd->command = CmdMulticastList; |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1266 | *((unsigned short *) (cmd + 1)) = netdev_mc_count(dev) * 6; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | cp = ((char *)(cmd + 1))+2; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1268 | netdev_for_each_mc_addr(ha, dev) { |
| 1269 | memcpy(cp, ha->addr, 6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | cp += 6; |
| 1271 | } |
| 1272 | if (i596_debug & LOG_SRCDST) |
| 1273 | print_eth (((char *)(cmd + 1)) + 2); |
| 1274 | i596_add_cmd(dev, cmd); |
| 1275 | } else { |
| 1276 | if (lp->set_conf.pa_next != I596_NULL) { |
| 1277 | return; |
| 1278 | } |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1279 | if (netdev_mc_empty(dev) && |
| 1280 | !(dev->flags & (IFF_PROMISC | IFF_ALLMULTI))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | lp->i596_config[8] &= ~0x01; |
| 1282 | } else { |
| 1283 | lp->i596_config[8] |= 0x01; |
| 1284 | } |
| 1285 | |
| 1286 | i596_add_cmd(dev, (struct i596_cmd *) &lp->set_conf); |
| 1287 | } |
| 1288 | } |
| 1289 | |
| 1290 | MODULE_AUTHOR("Ard van Breemen <ard@cstmel.nl.eu.org>"); |
| 1291 | MODULE_DESCRIPTION("Intel Panther onboard i82596 driver"); |
| 1292 | MODULE_LICENSE("GPL"); |
| 1293 | |
| 1294 | static struct net_device *dev_lp486e; |
| 1295 | static int full_duplex; |
| 1296 | static int options; |
| 1297 | static int io = IOADDR; |
| 1298 | static int irq = IRQ; |
| 1299 | |
| 1300 | module_param(debug, int, 0); |
| 1301 | //module_param(max_interrupt_work, int, 0); |
| 1302 | //module_param(reverse_probe, int, 0); |
| 1303 | //module_param(rx_copybreak, int, 0); |
| 1304 | module_param(options, int, 0); |
| 1305 | module_param(full_duplex, int, 0); |
| 1306 | |
| 1307 | static int __init lp486e_init_module(void) { |
| 1308 | int err; |
| 1309 | struct net_device *dev = alloc_etherdev(sizeof(struct i596_private)); |
| 1310 | if (!dev) |
| 1311 | return -ENOMEM; |
| 1312 | |
| 1313 | dev->irq = irq; |
| 1314 | dev->base_addr = io; |
| 1315 | err = lp486e_probe(dev); |
| 1316 | if (err) { |
| 1317 | free_netdev(dev); |
| 1318 | return err; |
| 1319 | } |
| 1320 | err = register_netdev(dev); |
| 1321 | if (err) { |
| 1322 | release_region(dev->base_addr, LP486E_TOTAL_SIZE); |
| 1323 | free_netdev(dev); |
| 1324 | return err; |
| 1325 | } |
| 1326 | dev_lp486e = dev; |
| 1327 | full_duplex = 0; |
| 1328 | options = 0; |
| 1329 | return 0; |
| 1330 | } |
| 1331 | |
| 1332 | static void __exit lp486e_cleanup_module(void) { |
| 1333 | unregister_netdev(dev_lp486e); |
| 1334 | release_region(dev_lp486e->base_addr, LP486E_TOTAL_SIZE); |
| 1335 | free_netdev(dev_lp486e); |
| 1336 | } |
| 1337 | |
| 1338 | module_init(lp486e_init_module); |
| 1339 | module_exit(lp486e_cleanup_module); |