Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* 82596.c: A generic 82596 ethernet driver for linux. */ |
| 2 | /* |
| 3 | Based on Apricot.c |
| 4 | Written 1994 by Mark Evans. |
| 5 | This driver is for the Apricot 82596 bus-master interface |
| 6 | |
| 7 | Modularised 12/94 Mark Evans |
| 8 | |
| 9 | |
| 10 | Modified to support the 82596 ethernet chips on 680x0 VME boards. |
| 11 | by Richard Hirst <richard@sleepie.demon.co.uk> |
| 12 | Renamed to be 82596.c |
| 13 | |
| 14 | 980825: Changed to receive directly in to sk_buffs which are |
| 15 | allocated at open() time. Eliminates copy on incoming frames |
| 16 | (small ones are still copied). Shared data now held in a |
| 17 | non-cached page, so we can run on 68060 in copyback mode. |
| 18 | |
| 19 | TBD: |
| 20 | * look at deferring rx frames rather than discarding (as per tulip) |
| 21 | * handle tx ring full as per tulip |
André Goddard Rosa | af901ca | 2009-11-14 13:09:05 -0200 | [diff] [blame] | 22 | * performance test to tune rx_copybreak |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | |
| 24 | Most of my modifications relate to the braindead big-endian |
| 25 | implementation by Intel. When the i596 is operating in |
| 26 | 'big-endian' mode, it thinks a 32 bit value of 0x12345678 |
| 27 | should be stored as 0x56781234. This is a real pain, when |
| 28 | you have linked lists which are shared by the 680x0 and the |
| 29 | i596. |
| 30 | |
| 31 | Driver skeleton |
| 32 | Written 1993 by Donald Becker. |
| 33 | Copyright 1993 United States Government as represented by the Director, |
| 34 | National Security Agency. This software may only be used and distributed |
| 35 | according to the terms of the GNU General Public License as modified by SRC, |
| 36 | incorporated herein by reference. |
| 37 | |
| 38 | The author may be reached as becker@scyld.com, or C/O |
| 39 | Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403 |
| 40 | |
| 41 | */ |
| 42 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <linux/module.h> |
| 44 | #include <linux/kernel.h> |
| 45 | #include <linux/string.h> |
| 46 | #include <linux/errno.h> |
| 47 | #include <linux/ioport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <linux/interrupt.h> |
| 49 | #include <linux/delay.h> |
| 50 | #include <linux/netdevice.h> |
| 51 | #include <linux/etherdevice.h> |
| 52 | #include <linux/skbuff.h> |
| 53 | #include <linux/init.h> |
| 54 | #include <linux/bitops.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 55 | #include <linux/gfp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
| 57 | #include <asm/io.h> |
| 58 | #include <asm/dma.h> |
| 59 | #include <asm/pgtable.h> |
Geert Uytterhoeven | 88accb4 | 2007-07-20 18:40:45 +0200 | [diff] [blame] | 60 | #include <asm/cacheflush.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
| 62 | static char version[] __initdata = |
| 63 | "82596.c $Revision: 1.5 $\n"; |
| 64 | |
| 65 | #define DRV_NAME "82596" |
| 66 | |
| 67 | /* DEBUG flags |
| 68 | */ |
| 69 | |
| 70 | #define DEB_INIT 0x0001 |
| 71 | #define DEB_PROBE 0x0002 |
| 72 | #define DEB_SERIOUS 0x0004 |
| 73 | #define DEB_ERRORS 0x0008 |
| 74 | #define DEB_MULTI 0x0010 |
| 75 | #define DEB_TDR 0x0020 |
| 76 | #define DEB_OPEN 0x0040 |
| 77 | #define DEB_RESET 0x0080 |
| 78 | #define DEB_ADDCMD 0x0100 |
| 79 | #define DEB_STATUS 0x0200 |
| 80 | #define DEB_STARTTX 0x0400 |
| 81 | #define DEB_RXADDR 0x0800 |
| 82 | #define DEB_TXADDR 0x1000 |
| 83 | #define DEB_RXFRAME 0x2000 |
| 84 | #define DEB_INTS 0x4000 |
| 85 | #define DEB_STRUCT 0x8000 |
| 86 | #define DEB_ANY 0xffff |
| 87 | |
| 88 | |
| 89 | #define DEB(x,y) if (i596_debug & (x)) y |
| 90 | |
| 91 | |
| 92 | #if defined(CONFIG_MVME16x_NET) || defined(CONFIG_MVME16x_NET_MODULE) |
| 93 | #define ENABLE_MVME16x_NET |
| 94 | #endif |
| 95 | #if defined(CONFIG_BVME6000_NET) || defined(CONFIG_BVME6000_NET_MODULE) |
| 96 | #define ENABLE_BVME6000_NET |
| 97 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | |
| 99 | #ifdef ENABLE_MVME16x_NET |
| 100 | #include <asm/mvme16xhw.h> |
| 101 | #endif |
| 102 | #ifdef ENABLE_BVME6000_NET |
| 103 | #include <asm/bvme6000hw.h> |
| 104 | #endif |
| 105 | |
| 106 | /* |
| 107 | * Define various macros for Channel Attention, word swapping etc., dependent |
| 108 | * on architecture. MVME and BVME are 680x0 based, otherwise it is Intel. |
| 109 | */ |
| 110 | |
| 111 | #ifdef __mc68000__ |
| 112 | #define WSWAPrfd(x) ((struct i596_rfd *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) |
| 113 | #define WSWAPrbd(x) ((struct i596_rbd *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) |
| 114 | #define WSWAPiscp(x) ((struct i596_iscp *)(((u32)(x)<<16) | ((((u32)(x)))>>16))) |
| 115 | #define WSWAPscb(x) ((struct i596_scb *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) |
| 116 | #define WSWAPcmd(x) ((struct i596_cmd *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) |
| 117 | #define WSWAPtbd(x) ((struct i596_tbd *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) |
| 118 | #define WSWAPchar(x) ((char *) (((u32)(x)<<16) | ((((u32)(x)))>>16))) |
| 119 | #define ISCP_BUSY 0x00010000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | #else |
Paul Gortmaker | 6e07ba3 | 2013-01-08 22:00:39 -0500 | [diff] [blame] | 121 | #error 82596.c: unknown architecture |
| 122 | #endif |
| 123 | |
| 124 | /* |
| 125 | * These were the intel versions, left here for reference. There |
| 126 | * are currently no x86 users of this legacy i82596 chip. |
| 127 | */ |
| 128 | #if 0 |
Andrew Morton | 3699a1c | 2009-05-12 10:48:37 +0000 | [diff] [blame] | 129 | #define WSWAPrfd(x) ((struct i596_rfd *)((long)x)) |
| 130 | #define WSWAPrbd(x) ((struct i596_rbd *)((long)x)) |
| 131 | #define WSWAPiscp(x) ((struct i596_iscp *)((long)x)) |
| 132 | #define WSWAPscb(x) ((struct i596_scb *)((long)x)) |
| 133 | #define WSWAPcmd(x) ((struct i596_cmd *)((long)x)) |
| 134 | #define WSWAPtbd(x) ((struct i596_tbd *)((long)x)) |
| 135 | #define WSWAPchar(x) ((char *)((long)x)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | #define ISCP_BUSY 0x0001 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | #endif |
| 138 | |
| 139 | /* |
| 140 | * The MPU_PORT command allows direct access to the 82596. With PORT access |
| 141 | * the following commands are available (p5-18). The 32-bit port command |
| 142 | * must be word-swapped with the most significant word written first. |
| 143 | * This only applies to VME boards. |
| 144 | */ |
| 145 | #define PORT_RESET 0x00 /* reset 82596 */ |
| 146 | #define PORT_SELFTEST 0x01 /* selftest */ |
| 147 | #define PORT_ALTSCP 0x02 /* alternate SCB address */ |
| 148 | #define PORT_ALTDUMP 0x03 /* Alternate DUMP address */ |
| 149 | |
| 150 | static int i596_debug = (DEB_SERIOUS|DEB_PROBE); |
| 151 | |
| 152 | MODULE_AUTHOR("Richard Hirst"); |
| 153 | MODULE_DESCRIPTION("i82596 driver"); |
| 154 | MODULE_LICENSE("GPL"); |
| 155 | |
| 156 | module_param(i596_debug, int, 0); |
| 157 | MODULE_PARM_DESC(i596_debug, "i82596 debug mask"); |
| 158 | |
| 159 | |
| 160 | /* Copy frames shorter than rx_copybreak, otherwise pass on up in |
| 161 | * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha). |
| 162 | */ |
| 163 | static int rx_copybreak = 100; |
| 164 | |
| 165 | #define PKT_BUF_SZ 1536 |
| 166 | #define MAX_MC_CNT 64 |
| 167 | |
| 168 | #define I596_TOTAL_SIZE 17 |
| 169 | |
| 170 | #define I596_NULL ((void *)0xffffffff) |
| 171 | |
| 172 | #define CMD_EOL 0x8000 /* The last command of the list, stop. */ |
| 173 | #define CMD_SUSP 0x4000 /* Suspend after doing cmd. */ |
| 174 | #define CMD_INTR 0x2000 /* Interrupt after doing cmd. */ |
| 175 | |
| 176 | #define CMD_FLEX 0x0008 /* Enable flexible memory model */ |
| 177 | |
| 178 | enum commands { |
| 179 | CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3, |
| 180 | CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7 |
| 181 | }; |
| 182 | |
| 183 | #define STAT_C 0x8000 /* Set to 0 after execution */ |
| 184 | #define STAT_B 0x4000 /* Command being executed */ |
| 185 | #define STAT_OK 0x2000 /* Command executed ok */ |
| 186 | #define STAT_A 0x1000 /* Command aborted */ |
| 187 | |
| 188 | #define CUC_START 0x0100 |
| 189 | #define CUC_RESUME 0x0200 |
| 190 | #define CUC_SUSPEND 0x0300 |
| 191 | #define CUC_ABORT 0x0400 |
| 192 | #define RX_START 0x0010 |
| 193 | #define RX_RESUME 0x0020 |
| 194 | #define RX_SUSPEND 0x0030 |
| 195 | #define RX_ABORT 0x0040 |
| 196 | |
Eric Dumazet | c63fdf4 | 2010-11-03 22:49:35 +0000 | [diff] [blame] | 197 | #define TX_TIMEOUT (HZ/20) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
| 199 | |
| 200 | struct i596_reg { |
| 201 | unsigned short porthi; |
| 202 | unsigned short portlo; |
| 203 | unsigned long ca; |
| 204 | }; |
| 205 | |
| 206 | #define EOF 0x8000 |
| 207 | #define SIZE_MASK 0x3fff |
| 208 | |
| 209 | struct i596_tbd { |
| 210 | unsigned short size; |
| 211 | unsigned short pad; |
| 212 | struct i596_tbd *next; |
| 213 | char *data; |
| 214 | }; |
| 215 | |
| 216 | /* The command structure has two 'next' pointers; v_next is the address of |
| 217 | * the next command as seen by the CPU, b_next is the address of the next |
| 218 | * command as seen by the 82596. The b_next pointer, as used by the 82596 |
| 219 | * always references the status field of the next command, rather than the |
| 220 | * v_next field, because the 82596 is unaware of v_next. It may seem more |
| 221 | * logical to put v_next at the end of the structure, but we cannot do that |
| 222 | * because the 82596 expects other fields to be there, depending on command |
| 223 | * type. |
| 224 | */ |
| 225 | |
| 226 | struct i596_cmd { |
| 227 | struct i596_cmd *v_next; /* Address from CPUs viewpoint */ |
| 228 | unsigned short status; |
| 229 | unsigned short command; |
| 230 | struct i596_cmd *b_next; /* Address from i596 viewpoint */ |
| 231 | }; |
| 232 | |
| 233 | struct tx_cmd { |
| 234 | struct i596_cmd cmd; |
| 235 | struct i596_tbd *tbd; |
| 236 | unsigned short size; |
| 237 | unsigned short pad; |
| 238 | struct sk_buff *skb; /* So we can free it after tx */ |
| 239 | }; |
| 240 | |
| 241 | struct tdr_cmd { |
| 242 | struct i596_cmd cmd; |
| 243 | unsigned short status; |
| 244 | unsigned short pad; |
| 245 | }; |
| 246 | |
| 247 | struct mc_cmd { |
| 248 | struct i596_cmd cmd; |
| 249 | short mc_cnt; |
| 250 | char mc_addrs[MAX_MC_CNT*6]; |
| 251 | }; |
| 252 | |
| 253 | struct sa_cmd { |
| 254 | struct i596_cmd cmd; |
| 255 | char eth_addr[8]; |
| 256 | }; |
| 257 | |
| 258 | struct cf_cmd { |
| 259 | struct i596_cmd cmd; |
| 260 | char i596_config[16]; |
| 261 | }; |
| 262 | |
| 263 | struct i596_rfd { |
| 264 | unsigned short stat; |
| 265 | unsigned short cmd; |
| 266 | struct i596_rfd *b_next; /* Address from i596 viewpoint */ |
| 267 | struct i596_rbd *rbd; |
| 268 | unsigned short count; |
| 269 | unsigned short size; |
| 270 | struct i596_rfd *v_next; /* Address from CPUs viewpoint */ |
| 271 | struct i596_rfd *v_prev; |
| 272 | }; |
| 273 | |
| 274 | struct i596_rbd { |
| 275 | unsigned short count; |
| 276 | unsigned short zero1; |
| 277 | struct i596_rbd *b_next; |
| 278 | unsigned char *b_data; /* Address from i596 viewpoint */ |
| 279 | unsigned short size; |
| 280 | unsigned short zero2; |
| 281 | struct sk_buff *skb; |
| 282 | struct i596_rbd *v_next; |
| 283 | struct i596_rbd *b_addr; /* This rbd addr from i596 view */ |
| 284 | unsigned char *v_data; /* Address from CPUs viewpoint */ |
| 285 | }; |
| 286 | |
| 287 | #define TX_RING_SIZE 64 |
| 288 | #define RX_RING_SIZE 16 |
| 289 | |
| 290 | struct i596_scb { |
| 291 | unsigned short status; |
| 292 | unsigned short command; |
| 293 | struct i596_cmd *cmd; |
| 294 | struct i596_rfd *rfd; |
| 295 | unsigned long crc_err; |
| 296 | unsigned long align_err; |
| 297 | unsigned long resource_err; |
| 298 | unsigned long over_err; |
| 299 | unsigned long rcvdt_err; |
| 300 | unsigned long short_err; |
| 301 | unsigned short t_on; |
| 302 | unsigned short t_off; |
| 303 | }; |
| 304 | |
| 305 | struct i596_iscp { |
| 306 | unsigned long stat; |
| 307 | struct i596_scb *scb; |
| 308 | }; |
| 309 | |
| 310 | struct i596_scp { |
| 311 | unsigned long sysbus; |
| 312 | unsigned long pad; |
| 313 | struct i596_iscp *iscp; |
| 314 | }; |
| 315 | |
| 316 | struct i596_private { |
| 317 | volatile struct i596_scp scp; |
| 318 | volatile struct i596_iscp iscp; |
| 319 | volatile struct i596_scb scb; |
| 320 | struct sa_cmd sa_cmd; |
| 321 | struct cf_cmd cf_cmd; |
| 322 | struct tdr_cmd tdr_cmd; |
| 323 | struct mc_cmd mc_cmd; |
| 324 | unsigned long stat; |
| 325 | int last_restart __attribute__((aligned(4))); |
| 326 | struct i596_rfd *rfd_head; |
| 327 | struct i596_rbd *rbd_head; |
| 328 | struct i596_cmd *cmd_tail; |
| 329 | struct i596_cmd *cmd_head; |
| 330 | int cmd_backlog; |
| 331 | unsigned long last_cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | struct i596_rfd rfds[RX_RING_SIZE]; |
| 333 | struct i596_rbd rbds[RX_RING_SIZE]; |
| 334 | struct tx_cmd tx_cmds[TX_RING_SIZE]; |
| 335 | struct i596_tbd tbds[TX_RING_SIZE]; |
| 336 | int next_tx_cmd; |
| 337 | spinlock_t lock; |
| 338 | }; |
| 339 | |
| 340 | static char init_setup[] = |
| 341 | { |
| 342 | 0x8E, /* length, prefetch on */ |
| 343 | 0xC8, /* fifo to 8, monitor off */ |
| 344 | #ifdef CONFIG_VME |
| 345 | 0xc0, /* don't save bad frames */ |
| 346 | #else |
| 347 | 0x80, /* don't save bad frames */ |
| 348 | #endif |
| 349 | 0x2E, /* No source address insertion, 8 byte preamble */ |
| 350 | 0x00, /* priority and backoff defaults */ |
| 351 | 0x60, /* interframe spacing */ |
| 352 | 0x00, /* slot time LSB */ |
| 353 | 0xf2, /* slot time and retries */ |
| 354 | 0x00, /* promiscuous mode */ |
| 355 | 0x00, /* collision detect */ |
| 356 | 0x40, /* minimum frame length */ |
| 357 | 0xff, |
| 358 | 0x00, |
| 359 | 0x7f /* *multi IA */ }; |
| 360 | |
| 361 | static int i596_open(struct net_device *dev); |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 362 | 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] | 363 | static irqreturn_t i596_interrupt(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | static int i596_close(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd); |
| 366 | static void i596_tx_timeout (struct net_device *dev); |
| 367 | static void print_eth(unsigned char *buf, char *str); |
| 368 | static void set_multicast_list(struct net_device *dev); |
| 369 | |
| 370 | static int rx_ring_size = RX_RING_SIZE; |
| 371 | static int ticks_limit = 25; |
| 372 | static int max_cmd_backlog = TX_RING_SIZE-1; |
| 373 | |
| 374 | |
| 375 | static inline void CA(struct net_device *dev) |
| 376 | { |
| 377 | #ifdef ENABLE_MVME16x_NET |
| 378 | if (MACH_IS_MVME16x) { |
| 379 | ((struct i596_reg *) dev->base_addr)->ca = 1; |
| 380 | } |
| 381 | #endif |
| 382 | #ifdef ENABLE_BVME6000_NET |
| 383 | if (MACH_IS_BVME6000) { |
| 384 | volatile u32 i; |
| 385 | |
| 386 | i = *(volatile u32 *) (dev->base_addr); |
| 387 | } |
| 388 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | } |
| 390 | |
| 391 | |
| 392 | static inline void MPU_PORT(struct net_device *dev, int c, volatile void *x) |
| 393 | { |
| 394 | #ifdef ENABLE_MVME16x_NET |
| 395 | if (MACH_IS_MVME16x) { |
| 396 | struct i596_reg *p = (struct i596_reg *) (dev->base_addr); |
| 397 | p->porthi = ((c) | (u32) (x)) & 0xffff; |
| 398 | p->portlo = ((c) | (u32) (x)) >> 16; |
| 399 | } |
| 400 | #endif |
| 401 | #ifdef ENABLE_BVME6000_NET |
| 402 | if (MACH_IS_BVME6000) { |
| 403 | u32 v = (u32) (c) | (u32) (x); |
| 404 | v = ((u32) (v) << 16) | ((u32) (v) >> 16); |
| 405 | *(volatile u32 *) dev->base_addr = v; |
| 406 | udelay(1); |
| 407 | *(volatile u32 *) dev->base_addr = v; |
| 408 | } |
| 409 | #endif |
| 410 | } |
| 411 | |
| 412 | |
| 413 | static inline int wait_istat(struct net_device *dev, struct i596_private *lp, int delcnt, char *str) |
| 414 | { |
| 415 | while (--delcnt && lp->iscp.stat) |
| 416 | udelay(10); |
| 417 | if (!delcnt) { |
| 418 | printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n", |
| 419 | dev->name, str, lp->scb.status, lp->scb.command); |
| 420 | return -1; |
| 421 | } |
| 422 | else |
| 423 | return 0; |
| 424 | } |
| 425 | |
| 426 | |
| 427 | static inline int wait_cmd(struct net_device *dev, struct i596_private *lp, int delcnt, char *str) |
| 428 | { |
| 429 | while (--delcnt && lp->scb.command) |
| 430 | udelay(10); |
| 431 | if (!delcnt) { |
| 432 | printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n", |
| 433 | dev->name, str, lp->scb.status, lp->scb.command); |
| 434 | return -1; |
| 435 | } |
| 436 | else |
| 437 | return 0; |
| 438 | } |
| 439 | |
| 440 | |
| 441 | static inline int wait_cfg(struct net_device *dev, struct i596_cmd *cmd, int delcnt, char *str) |
| 442 | { |
| 443 | volatile struct i596_cmd *c = cmd; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 444 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | while (--delcnt && c->command) |
| 446 | udelay(10); |
| 447 | if (!delcnt) { |
| 448 | printk(KERN_ERR "%s: %s.\n", dev->name, str); |
| 449 | return -1; |
| 450 | } |
| 451 | else |
| 452 | return 0; |
| 453 | } |
| 454 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 455 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | static void i596_display_data(struct net_device *dev) |
| 457 | { |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 458 | struct i596_private *lp = dev->ml_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | struct i596_cmd *cmd; |
| 460 | struct i596_rfd *rfd; |
| 461 | struct i596_rbd *rbd; |
| 462 | |
| 463 | printk(KERN_ERR "lp and scp at %p, .sysbus = %08lx, .iscp = %p\n", |
| 464 | &lp->scp, lp->scp.sysbus, lp->scp.iscp); |
| 465 | printk(KERN_ERR "iscp at %p, iscp.stat = %08lx, .scb = %p\n", |
| 466 | &lp->iscp, lp->iscp.stat, lp->iscp.scb); |
| 467 | printk(KERN_ERR "scb at %p, scb.status = %04x, .command = %04x," |
| 468 | " .cmd = %p, .rfd = %p\n", |
| 469 | &lp->scb, lp->scb.status, lp->scb.command, |
| 470 | lp->scb.cmd, lp->scb.rfd); |
| 471 | printk(KERN_ERR " errors: crc %lx, align %lx, resource %lx," |
| 472 | " over %lx, rcvdt %lx, short %lx\n", |
| 473 | lp->scb.crc_err, lp->scb.align_err, lp->scb.resource_err, |
| 474 | lp->scb.over_err, lp->scb.rcvdt_err, lp->scb.short_err); |
| 475 | cmd = lp->cmd_head; |
| 476 | while (cmd != I596_NULL) { |
| 477 | printk(KERN_ERR "cmd at %p, .status = %04x, .command = %04x, .b_next = %p\n", |
| 478 | cmd, cmd->status, cmd->command, cmd->b_next); |
| 479 | cmd = cmd->v_next; |
| 480 | } |
| 481 | rfd = lp->rfd_head; |
| 482 | printk(KERN_ERR "rfd_head = %p\n", rfd); |
| 483 | do { |
| 484 | printk(KERN_ERR " %p .stat %04x, .cmd %04x, b_next %p, rbd %p," |
| 485 | " count %04x\n", |
| 486 | rfd, rfd->stat, rfd->cmd, rfd->b_next, rfd->rbd, |
| 487 | rfd->count); |
| 488 | rfd = rfd->v_next; |
| 489 | } while (rfd != lp->rfd_head); |
| 490 | rbd = lp->rbd_head; |
| 491 | printk(KERN_ERR "rbd_head = %p\n", rbd); |
| 492 | do { |
| 493 | printk(KERN_ERR " %p .count %04x, b_next %p, b_data %p, size %04x\n", |
| 494 | rbd, rbd->count, rbd->b_next, rbd->b_data, rbd->size); |
| 495 | rbd = rbd->v_next; |
| 496 | } while (rbd != lp->rbd_head); |
| 497 | } |
| 498 | |
| 499 | |
| 500 | #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET) |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 501 | static irqreturn_t i596_error(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | { |
| 503 | struct net_device *dev = dev_id; |
| 504 | #ifdef ENABLE_MVME16x_NET |
| 505 | if (MACH_IS_MVME16x) { |
| 506 | volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; |
| 507 | |
| 508 | pcc2[0x28] = 1; |
| 509 | pcc2[0x2b] = 0x1d; |
| 510 | } |
| 511 | #endif |
| 512 | #ifdef ENABLE_BVME6000_NET |
| 513 | if (MACH_IS_BVME6000) { |
| 514 | volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG; |
| 515 | |
| 516 | *ethirq = 1; |
| 517 | *ethirq = 3; |
| 518 | } |
| 519 | #endif |
| 520 | printk(KERN_ERR "%s: Error interrupt\n", dev->name); |
| 521 | i596_display_data(dev); |
| 522 | return IRQ_HANDLED; |
| 523 | } |
| 524 | #endif |
| 525 | |
Kulikov Vasiliy | f163530 | 2010-07-09 02:25:22 +0000 | [diff] [blame] | 526 | static inline void remove_rx_bufs(struct net_device *dev) |
| 527 | { |
| 528 | struct i596_private *lp = dev->ml_priv; |
| 529 | struct i596_rbd *rbd; |
| 530 | int i; |
| 531 | |
| 532 | for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) { |
| 533 | if (rbd->skb == NULL) |
| 534 | break; |
| 535 | dev_kfree_skb(rbd->skb); |
| 536 | rbd->skb = NULL; |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | static inline int init_rx_bufs(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | { |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 542 | struct i596_private *lp = dev->ml_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | int i; |
| 544 | struct i596_rfd *rfd; |
| 545 | struct i596_rbd *rbd; |
| 546 | |
| 547 | /* First build the Receive Buffer Descriptor List */ |
| 548 | |
| 549 | for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) { |
Pradeep A Dalvi | c056b73 | 2012-02-05 02:50:38 +0000 | [diff] [blame] | 550 | struct sk_buff *skb = netdev_alloc_skb(dev, PKT_BUF_SZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | |
Kulikov Vasiliy | f163530 | 2010-07-09 02:25:22 +0000 | [diff] [blame] | 552 | if (skb == NULL) { |
| 553 | remove_rx_bufs(dev); |
| 554 | return -ENOMEM; |
| 555 | } |
| 556 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | rbd->v_next = rbd+1; |
| 558 | rbd->b_next = WSWAPrbd(virt_to_bus(rbd+1)); |
| 559 | rbd->b_addr = WSWAPrbd(virt_to_bus(rbd)); |
| 560 | rbd->skb = skb; |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 561 | rbd->v_data = skb->data; |
| 562 | rbd->b_data = WSWAPchar(virt_to_bus(skb->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | rbd->size = PKT_BUF_SZ; |
| 564 | #ifdef __mc68000__ |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 565 | cache_clear(virt_to_phys(skb->data), PKT_BUF_SZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | #endif |
| 567 | } |
| 568 | lp->rbd_head = lp->rbds; |
| 569 | rbd = lp->rbds + rx_ring_size - 1; |
| 570 | rbd->v_next = lp->rbds; |
| 571 | rbd->b_next = WSWAPrbd(virt_to_bus(lp->rbds)); |
| 572 | |
| 573 | /* Now build the Receive Frame Descriptor List */ |
| 574 | |
| 575 | for (i = 0, rfd = lp->rfds; i < rx_ring_size; i++, rfd++) { |
| 576 | rfd->rbd = I596_NULL; |
| 577 | rfd->v_next = rfd+1; |
| 578 | rfd->v_prev = rfd-1; |
| 579 | rfd->b_next = WSWAPrfd(virt_to_bus(rfd+1)); |
| 580 | rfd->cmd = CMD_FLEX; |
| 581 | } |
| 582 | lp->rfd_head = lp->rfds; |
| 583 | lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds)); |
| 584 | rfd = lp->rfds; |
| 585 | rfd->rbd = lp->rbd_head; |
| 586 | rfd->v_prev = lp->rfds + rx_ring_size - 1; |
| 587 | rfd = lp->rfds + rx_ring_size - 1; |
| 588 | rfd->v_next = lp->rfds; |
| 589 | rfd->b_next = WSWAPrfd(virt_to_bus(lp->rfds)); |
| 590 | rfd->cmd = CMD_EOL|CMD_FLEX; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | |
Kulikov Vasiliy | f163530 | 2010-07-09 02:25:22 +0000 | [diff] [blame] | 592 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | |
| 596 | static void rebuild_rx_bufs(struct net_device *dev) |
| 597 | { |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 598 | struct i596_private *lp = dev->ml_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | int i; |
| 600 | |
| 601 | /* Ensure rx frame/buffer descriptors are tidy */ |
| 602 | |
| 603 | for (i = 0; i < rx_ring_size; i++) { |
| 604 | lp->rfds[i].rbd = I596_NULL; |
| 605 | lp->rfds[i].cmd = CMD_FLEX; |
| 606 | } |
| 607 | lp->rfds[rx_ring_size-1].cmd = CMD_EOL|CMD_FLEX; |
| 608 | lp->rfd_head = lp->rfds; |
| 609 | lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds)); |
| 610 | lp->rbd_head = lp->rbds; |
| 611 | lp->rfds[0].rbd = WSWAPrbd(virt_to_bus(lp->rbds)); |
| 612 | } |
| 613 | |
| 614 | |
| 615 | static int init_i596_mem(struct net_device *dev) |
| 616 | { |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 617 | struct i596_private *lp = dev->ml_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | unsigned long flags; |
| 619 | |
| 620 | MPU_PORT(dev, PORT_RESET, NULL); |
| 621 | |
| 622 | udelay(100); /* Wait 100us - seems to help */ |
| 623 | |
| 624 | #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET) |
| 625 | #ifdef ENABLE_MVME16x_NET |
| 626 | if (MACH_IS_MVME16x) { |
| 627 | volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; |
| 628 | |
| 629 | /* Disable all ints for now */ |
| 630 | pcc2[0x28] = 1; |
| 631 | pcc2[0x2a] = 0x48; |
| 632 | /* Following disables snooping. Snooping is not required |
| 633 | * as we make appropriate use of non-cached pages for |
| 634 | * shared data, and cache_push/cache_clear. |
| 635 | */ |
| 636 | pcc2[0x2b] = 0x08; |
| 637 | } |
| 638 | #endif |
| 639 | #ifdef ENABLE_BVME6000_NET |
| 640 | if (MACH_IS_BVME6000) { |
| 641 | volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG; |
| 642 | |
| 643 | *ethirq = 1; |
| 644 | } |
| 645 | #endif |
| 646 | |
| 647 | /* change the scp address */ |
| 648 | |
| 649 | MPU_PORT(dev, PORT_ALTSCP, (void *)virt_to_bus((void *)&lp->scp)); |
| 650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | #endif |
| 652 | |
| 653 | lp->last_cmd = jiffies; |
| 654 | |
| 655 | #ifdef ENABLE_MVME16x_NET |
| 656 | if (MACH_IS_MVME16x) |
| 657 | lp->scp.sysbus = 0x00000054; |
| 658 | #endif |
| 659 | #ifdef ENABLE_BVME6000_NET |
| 660 | if (MACH_IS_BVME6000) |
| 661 | lp->scp.sysbus = 0x0000004c; |
| 662 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | |
| 664 | lp->scp.iscp = WSWAPiscp(virt_to_bus((void *)&lp->iscp)); |
| 665 | lp->iscp.scb = WSWAPscb(virt_to_bus((void *)&lp->scb)); |
| 666 | lp->iscp.stat = ISCP_BUSY; |
| 667 | lp->cmd_backlog = 0; |
| 668 | |
| 669 | lp->cmd_head = lp->scb.cmd = I596_NULL; |
| 670 | |
| 671 | #ifdef ENABLE_BVME6000_NET |
| 672 | if (MACH_IS_BVME6000) { |
| 673 | lp->scb.t_on = 7 * 25; |
| 674 | lp->scb.t_off = 1 * 25; |
| 675 | } |
| 676 | #endif |
| 677 | |
| 678 | DEB(DEB_INIT,printk(KERN_DEBUG "%s: starting i82596.\n", dev->name)); |
| 679 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | CA(dev); |
| 681 | |
| 682 | if (wait_istat(dev,lp,1000,"initialization timed out")) |
| 683 | goto failed; |
| 684 | DEB(DEB_INIT,printk(KERN_DEBUG "%s: i82596 initialization successful\n", dev->name)); |
| 685 | |
| 686 | /* Ensure rx frame/buffer descriptors are tidy */ |
| 687 | rebuild_rx_bufs(dev); |
| 688 | lp->scb.command = 0; |
| 689 | |
| 690 | #ifdef ENABLE_MVME16x_NET |
| 691 | if (MACH_IS_MVME16x) { |
| 692 | volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; |
| 693 | |
| 694 | /* Enable ints, etc. now */ |
| 695 | pcc2[0x2a] = 0x55; /* Edge sensitive */ |
| 696 | pcc2[0x2b] = 0x15; |
| 697 | } |
| 698 | #endif |
| 699 | #ifdef ENABLE_BVME6000_NET |
| 700 | if (MACH_IS_BVME6000) { |
| 701 | volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG; |
| 702 | |
| 703 | *ethirq = 3; |
| 704 | } |
| 705 | #endif |
| 706 | |
| 707 | |
| 708 | DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdConfigure\n", dev->name)); |
| 709 | memcpy(lp->cf_cmd.i596_config, init_setup, 14); |
| 710 | lp->cf_cmd.cmd.command = CmdConfigure; |
| 711 | i596_add_cmd(dev, &lp->cf_cmd.cmd); |
| 712 | |
| 713 | DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdSASetup\n", dev->name)); |
| 714 | memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, 6); |
| 715 | lp->sa_cmd.cmd.command = CmdSASetup; |
| 716 | i596_add_cmd(dev, &lp->sa_cmd.cmd); |
| 717 | |
| 718 | DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdTDR\n", dev->name)); |
| 719 | lp->tdr_cmd.cmd.command = CmdTDR; |
| 720 | i596_add_cmd(dev, &lp->tdr_cmd.cmd); |
| 721 | |
| 722 | spin_lock_irqsave (&lp->lock, flags); |
| 723 | |
| 724 | if (wait_cmd(dev,lp,1000,"timed out waiting to issue RX_START")) { |
| 725 | spin_unlock_irqrestore (&lp->lock, flags); |
| 726 | goto failed; |
| 727 | } |
| 728 | DEB(DEB_INIT,printk(KERN_DEBUG "%s: Issuing RX_START\n", dev->name)); |
| 729 | lp->scb.command = RX_START; |
| 730 | CA(dev); |
| 731 | |
| 732 | spin_unlock_irqrestore (&lp->lock, flags); |
| 733 | |
| 734 | if (wait_cmd(dev,lp,1000,"RX_START not processed")) |
| 735 | goto failed; |
| 736 | DEB(DEB_INIT,printk(KERN_DEBUG "%s: Receive unit started OK\n", dev->name)); |
| 737 | return 0; |
| 738 | |
| 739 | failed: |
| 740 | printk(KERN_CRIT "%s: Failed to initialise 82596\n", dev->name); |
| 741 | MPU_PORT(dev, PORT_RESET, NULL); |
| 742 | return -1; |
| 743 | } |
| 744 | |
| 745 | static inline int i596_rx(struct net_device *dev) |
| 746 | { |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 747 | struct i596_private *lp = dev->ml_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | struct i596_rfd *rfd; |
| 749 | struct i596_rbd *rbd; |
| 750 | int frames = 0; |
| 751 | |
| 752 | DEB(DEB_RXFRAME,printk(KERN_DEBUG "i596_rx(), rfd_head %p, rbd_head %p\n", |
| 753 | lp->rfd_head, lp->rbd_head)); |
| 754 | |
| 755 | rfd = lp->rfd_head; /* Ref next frame to check */ |
| 756 | |
| 757 | while ((rfd->stat) & STAT_C) { /* Loop while complete frames */ |
| 758 | if (rfd->rbd == I596_NULL) |
| 759 | rbd = I596_NULL; |
| 760 | else if (rfd->rbd == lp->rbd_head->b_addr) |
| 761 | rbd = lp->rbd_head; |
| 762 | else { |
| 763 | printk(KERN_CRIT "%s: rbd chain broken!\n", dev->name); |
| 764 | /* XXX Now what? */ |
| 765 | rbd = I596_NULL; |
| 766 | } |
| 767 | DEB(DEB_RXFRAME, printk(KERN_DEBUG " rfd %p, rfd.rbd %p, rfd.stat %04x\n", |
| 768 | rfd, rfd->rbd, rfd->stat)); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 769 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | if (rbd != I596_NULL && ((rfd->stat) & STAT_OK)) { |
| 771 | /* a good frame */ |
| 772 | int pkt_len = rbd->count & 0x3fff; |
| 773 | struct sk_buff *skb = rbd->skb; |
| 774 | int rx_in_place = 0; |
| 775 | |
| 776 | DEB(DEB_RXADDR,print_eth(rbd->v_data, "received")); |
| 777 | frames++; |
| 778 | |
| 779 | /* Check if the packet is long enough to just accept |
| 780 | * without copying to a properly sized skbuff. |
| 781 | */ |
| 782 | |
| 783 | if (pkt_len > rx_copybreak) { |
| 784 | struct sk_buff *newskb; |
| 785 | |
| 786 | /* Get fresh skbuff to replace filled one. */ |
Pradeep A Dalvi | c056b73 | 2012-02-05 02:50:38 +0000 | [diff] [blame] | 787 | newskb = netdev_alloc_skb(dev, PKT_BUF_SZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | if (newskb == NULL) { |
| 789 | skb = NULL; /* drop pkt */ |
| 790 | goto memory_squeeze; |
| 791 | } |
| 792 | /* Pass up the skb already on the Rx ring. */ |
| 793 | skb_put(skb, pkt_len); |
| 794 | rx_in_place = 1; |
| 795 | rbd->skb = newskb; |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 796 | rbd->v_data = newskb->data; |
| 797 | rbd->b_data = WSWAPchar(virt_to_bus(newskb->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | #ifdef __mc68000__ |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 799 | cache_clear(virt_to_phys(newskb->data), PKT_BUF_SZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | #endif |
| 801 | } |
| 802 | else |
Pradeep A Dalvi | c056b73 | 2012-02-05 02:50:38 +0000 | [diff] [blame] | 803 | skb = netdev_alloc_skb(dev, pkt_len + 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | memory_squeeze: |
| 805 | if (skb == NULL) { |
| 806 | /* XXX tulip.c can defer packets here!! */ |
| 807 | printk(KERN_WARNING "%s: i596_rx Memory squeeze, dropping packet.\n", dev->name); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 808 | dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | } |
| 810 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | if (!rx_in_place) { |
| 812 | /* 16 byte align the data fields */ |
| 813 | skb_reserve(skb, 2); |
| 814 | memcpy(skb_put(skb,pkt_len), rbd->v_data, pkt_len); |
| 815 | } |
| 816 | skb->protocol=eth_type_trans(skb,dev); |
| 817 | skb->len = pkt_len; |
| 818 | #ifdef __mc68000__ |
David S. Miller | 689be43 | 2005-06-28 15:25:31 -0700 | [diff] [blame] | 819 | cache_clear(virt_to_phys(rbd->skb->data), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | pkt_len); |
| 821 | #endif |
| 822 | netif_rx(skb); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 823 | dev->stats.rx_packets++; |
| 824 | dev->stats.rx_bytes+=pkt_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | } |
| 826 | } |
| 827 | else { |
| 828 | DEB(DEB_ERRORS, printk(KERN_DEBUG "%s: Error, rfd.stat = 0x%04x\n", |
| 829 | dev->name, rfd->stat)); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 830 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | if ((rfd->stat) & 0x0001) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 832 | dev->stats.collisions++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | if ((rfd->stat) & 0x0080) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 834 | dev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | if ((rfd->stat) & 0x0100) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 836 | dev->stats.rx_over_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | if ((rfd->stat) & 0x0200) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 838 | dev->stats.rx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | if ((rfd->stat) & 0x0400) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 840 | dev->stats.rx_frame_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | if ((rfd->stat) & 0x0800) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 842 | dev->stats.rx_crc_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | if ((rfd->stat) & 0x1000) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 844 | dev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | } |
| 846 | |
| 847 | /* Clear the buffer descriptor count and EOF + F flags */ |
| 848 | |
| 849 | if (rbd != I596_NULL && (rbd->count & 0x4000)) { |
| 850 | rbd->count = 0; |
| 851 | lp->rbd_head = rbd->v_next; |
| 852 | } |
| 853 | |
| 854 | /* Tidy the frame descriptor, marking it as end of list */ |
| 855 | |
| 856 | rfd->rbd = I596_NULL; |
| 857 | rfd->stat = 0; |
| 858 | rfd->cmd = CMD_EOL|CMD_FLEX; |
| 859 | rfd->count = 0; |
| 860 | |
| 861 | /* Remove end-of-list from old end descriptor */ |
| 862 | |
| 863 | rfd->v_prev->cmd = CMD_FLEX; |
| 864 | |
| 865 | /* Update record of next frame descriptor to process */ |
| 866 | |
| 867 | lp->scb.rfd = rfd->b_next; |
| 868 | lp->rfd_head = rfd->v_next; |
| 869 | rfd = lp->rfd_head; |
| 870 | } |
| 871 | |
| 872 | DEB(DEB_RXFRAME,printk(KERN_DEBUG "frames %d\n", frames)); |
| 873 | |
| 874 | return 0; |
| 875 | } |
| 876 | |
| 877 | |
Andrew Morton | 864fe05 | 2006-08-14 22:59:57 -0700 | [diff] [blame] | 878 | static void i596_cleanup_cmd(struct net_device *dev, struct i596_private *lp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | { |
| 880 | struct i596_cmd *ptr; |
| 881 | |
| 882 | while (lp->cmd_head != I596_NULL) { |
| 883 | ptr = lp->cmd_head; |
| 884 | lp->cmd_head = ptr->v_next; |
| 885 | lp->cmd_backlog--; |
| 886 | |
| 887 | switch ((ptr->command) & 0x7) { |
| 888 | case CmdTx: |
| 889 | { |
| 890 | struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr; |
| 891 | struct sk_buff *skb = tx_cmd->skb; |
| 892 | |
| 893 | dev_kfree_skb(skb); |
| 894 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 895 | dev->stats.tx_errors++; |
| 896 | dev->stats.tx_aborted_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | |
| 898 | ptr->v_next = ptr->b_next = I596_NULL; |
| 899 | tx_cmd->cmd.command = 0; /* Mark as free */ |
| 900 | break; |
| 901 | } |
| 902 | default: |
| 903 | ptr->v_next = ptr->b_next = I596_NULL; |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | wait_cmd(dev,lp,100,"i596_cleanup_cmd timed out"); |
| 908 | lp->scb.cmd = I596_NULL; |
| 909 | } |
| 910 | |
Andrew Morton | 864fe05 | 2006-08-14 22:59:57 -0700 | [diff] [blame] | 911 | static void i596_reset(struct net_device *dev, struct i596_private *lp, |
| 912 | int ioaddr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | { |
| 914 | unsigned long flags; |
| 915 | |
| 916 | DEB(DEB_RESET,printk(KERN_DEBUG "i596_reset\n")); |
| 917 | |
| 918 | spin_lock_irqsave (&lp->lock, flags); |
| 919 | |
| 920 | wait_cmd(dev,lp,100,"i596_reset timed out"); |
| 921 | |
| 922 | netif_stop_queue(dev); |
| 923 | |
| 924 | lp->scb.command = CUC_ABORT | RX_ABORT; |
| 925 | CA(dev); |
| 926 | |
| 927 | /* wait for shutdown */ |
| 928 | wait_cmd(dev,lp,1000,"i596_reset 2 timed out"); |
| 929 | spin_unlock_irqrestore (&lp->lock, flags); |
| 930 | |
| 931 | i596_cleanup_cmd(dev,lp); |
| 932 | i596_rx(dev); |
| 933 | |
| 934 | netif_start_queue(dev); |
| 935 | init_i596_mem(dev); |
| 936 | } |
| 937 | |
| 938 | static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd) |
| 939 | { |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 940 | struct i596_private *lp = dev->ml_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | int ioaddr = dev->base_addr; |
| 942 | unsigned long flags; |
| 943 | |
| 944 | DEB(DEB_ADDCMD,printk(KERN_DEBUG "i596_add_cmd\n")); |
| 945 | |
| 946 | cmd->status = 0; |
| 947 | cmd->command |= (CMD_EOL | CMD_INTR); |
| 948 | cmd->v_next = cmd->b_next = I596_NULL; |
| 949 | |
| 950 | spin_lock_irqsave (&lp->lock, flags); |
| 951 | |
| 952 | if (lp->cmd_head != I596_NULL) { |
| 953 | lp->cmd_tail->v_next = cmd; |
| 954 | lp->cmd_tail->b_next = WSWAPcmd(virt_to_bus(&cmd->status)); |
| 955 | } else { |
| 956 | lp->cmd_head = cmd; |
| 957 | wait_cmd(dev,lp,100,"i596_add_cmd timed out"); |
| 958 | lp->scb.cmd = WSWAPcmd(virt_to_bus(&cmd->status)); |
| 959 | lp->scb.command = CUC_START; |
| 960 | CA(dev); |
| 961 | } |
| 962 | lp->cmd_tail = cmd; |
| 963 | lp->cmd_backlog++; |
| 964 | |
| 965 | spin_unlock_irqrestore (&lp->lock, flags); |
| 966 | |
| 967 | if (lp->cmd_backlog > max_cmd_backlog) { |
| 968 | unsigned long tickssofar = jiffies - lp->last_cmd; |
| 969 | |
| 970 | if (tickssofar < ticks_limit) |
| 971 | return; |
| 972 | |
| 973 | printk(KERN_NOTICE "%s: command unit timed out, status resetting.\n", dev->name); |
| 974 | |
| 975 | i596_reset(dev, lp, ioaddr); |
| 976 | } |
| 977 | } |
| 978 | |
| 979 | static int i596_open(struct net_device *dev) |
| 980 | { |
| 981 | int res = 0; |
| 982 | |
| 983 | DEB(DEB_OPEN,printk(KERN_DEBUG "%s: i596_open() irq %d.\n", dev->name, dev->irq)); |
| 984 | |
| 985 | if (request_irq(dev->irq, i596_interrupt, 0, "i82596", dev)) { |
| 986 | printk(KERN_ERR "%s: IRQ %d not free\n", dev->name, dev->irq); |
| 987 | return -EAGAIN; |
| 988 | } |
| 989 | #ifdef ENABLE_MVME16x_NET |
| 990 | if (MACH_IS_MVME16x) { |
Kulikov Vasiliy | a607072 | 2010-07-09 02:25:40 +0000 | [diff] [blame] | 991 | if (request_irq(0x56, i596_error, 0, "i82596_error", dev)) { |
| 992 | res = -EAGAIN; |
| 993 | goto err_irq_dev; |
| 994 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | } |
| 996 | #endif |
Kulikov Vasiliy | f163530 | 2010-07-09 02:25:22 +0000 | [diff] [blame] | 997 | res = init_rx_bufs(dev); |
Kulikov Vasiliy | a607072 | 2010-07-09 02:25:40 +0000 | [diff] [blame] | 998 | if (res) |
| 999 | goto err_irq_56; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | |
| 1001 | netif_start_queue(dev); |
| 1002 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | if (init_i596_mem(dev)) { |
| 1004 | res = -EAGAIN; |
Kulikov Vasiliy | a607072 | 2010-07-09 02:25:40 +0000 | [diff] [blame] | 1005 | goto err_queue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | } |
| 1007 | |
Kulikov Vasiliy | a607072 | 2010-07-09 02:25:40 +0000 | [diff] [blame] | 1008 | return 0; |
| 1009 | |
| 1010 | err_queue: |
| 1011 | netif_stop_queue(dev); |
| 1012 | remove_rx_bufs(dev); |
| 1013 | err_irq_56: |
| 1014 | #ifdef ENABLE_MVME16x_NET |
| 1015 | free_irq(0x56, dev); |
Kulikov Vasiliy | a607072 | 2010-07-09 02:25:40 +0000 | [diff] [blame] | 1016 | err_irq_dev: |
Andrew Morton | 6539548 | 2010-07-19 15:27:13 -0700 | [diff] [blame] | 1017 | #endif |
Kulikov Vasiliy | a607072 | 2010-07-09 02:25:40 +0000 | [diff] [blame] | 1018 | free_irq(dev->irq, dev); |
| 1019 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | return res; |
| 1021 | } |
| 1022 | |
| 1023 | static void i596_tx_timeout (struct net_device *dev) |
| 1024 | { |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 1025 | struct i596_private *lp = dev->ml_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | int ioaddr = dev->base_addr; |
| 1027 | |
| 1028 | /* Transmitter timeout, serious problems. */ |
| 1029 | DEB(DEB_ERRORS,printk(KERN_ERR "%s: transmit timed out, status resetting.\n", |
| 1030 | dev->name)); |
| 1031 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1032 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | |
| 1034 | /* Try to restart the adaptor */ |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1035 | if (lp->last_restart == dev->stats.tx_packets) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | DEB(DEB_ERRORS,printk(KERN_ERR "Resetting board.\n")); |
| 1037 | /* Shutdown and restart */ |
| 1038 | i596_reset (dev, lp, ioaddr); |
| 1039 | } else { |
| 1040 | /* Issue a channel attention signal */ |
| 1041 | DEB(DEB_ERRORS,printk(KERN_ERR "Kicking board.\n")); |
| 1042 | lp->scb.command = CUC_START | RX_START; |
| 1043 | CA (dev); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1044 | lp->last_restart = dev->stats.tx_packets; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | } |
| 1046 | |
Eric Dumazet | 1ae5dc3 | 2010-05-10 05:01:31 -0700 | [diff] [blame] | 1047 | dev->trans_start = jiffies; /* prevent tx timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | netif_wake_queue (dev); |
| 1049 | } |
| 1050 | |
Stephen Hemminger | 61357325 | 2009-08-31 19:50:58 +0000 | [diff] [blame] | 1051 | 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] | 1052 | { |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 1053 | struct i596_private *lp = dev->ml_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | struct tx_cmd *tx_cmd; |
| 1055 | struct i596_tbd *tbd; |
| 1056 | short length = skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | |
Andrew Morton | 9e8e83d | 2007-01-27 00:00:04 -0800 | [diff] [blame] | 1058 | DEB(DEB_STARTTX,printk(KERN_DEBUG "%s: i596_start_xmit(%x,%p) called\n", |
| 1059 | dev->name, skb->len, skb->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | |
| 1061 | if (skb->len < ETH_ZLEN) { |
Herbert Xu | 5b057c6 | 2006-06-23 02:06:41 -0700 | [diff] [blame] | 1062 | if (skb_padto(skb, ETH_ZLEN)) |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1063 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | length = ETH_ZLEN; |
| 1065 | } |
| 1066 | netif_stop_queue(dev); |
| 1067 | |
| 1068 | tx_cmd = lp->tx_cmds + lp->next_tx_cmd; |
| 1069 | tbd = lp->tbds + lp->next_tx_cmd; |
| 1070 | |
| 1071 | if (tx_cmd->cmd.command) { |
| 1072 | printk(KERN_NOTICE "%s: xmit ring full, dropping packet.\n", |
| 1073 | dev->name); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1074 | dev->stats.tx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | |
| 1076 | dev_kfree_skb(skb); |
| 1077 | } else { |
| 1078 | if (++lp->next_tx_cmd == TX_RING_SIZE) |
| 1079 | lp->next_tx_cmd = 0; |
| 1080 | tx_cmd->tbd = WSWAPtbd(virt_to_bus(tbd)); |
| 1081 | tbd->next = I596_NULL; |
| 1082 | |
| 1083 | tx_cmd->cmd.command = CMD_FLEX | CmdTx; |
| 1084 | tx_cmd->skb = skb; |
| 1085 | |
| 1086 | tx_cmd->pad = 0; |
| 1087 | tx_cmd->size = 0; |
| 1088 | tbd->pad = 0; |
| 1089 | tbd->size = EOF | length; |
| 1090 | |
| 1091 | tbd->data = WSWAPchar(virt_to_bus(skb->data)); |
| 1092 | |
| 1093 | #ifdef __mc68000__ |
| 1094 | cache_push(virt_to_phys(skb->data), length); |
| 1095 | #endif |
| 1096 | DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued")); |
| 1097 | i596_add_cmd(dev, &tx_cmd->cmd); |
| 1098 | |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1099 | dev->stats.tx_packets++; |
| 1100 | dev->stats.tx_bytes += length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | } |
| 1102 | |
| 1103 | netif_start_queue(dev); |
| 1104 | |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1105 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | } |
| 1107 | |
| 1108 | static void print_eth(unsigned char *add, char *str) |
| 1109 | { |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1110 | printk(KERN_DEBUG "i596 0x%p, %pM --> %pM %02X%02X, %s\n", |
| 1111 | add, add + 6, add, add[12], add[13], str); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | } |
| 1113 | |
| 1114 | static int io = 0x300; |
| 1115 | static int irq = 10; |
| 1116 | |
Stephen Hemminger | ba270ed | 2009-01-09 13:01:42 +0000 | [diff] [blame] | 1117 | static const struct net_device_ops i596_netdev_ops = { |
| 1118 | .ndo_open = i596_open, |
| 1119 | .ndo_stop = i596_close, |
| 1120 | .ndo_start_xmit = i596_start_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 1121 | .ndo_set_rx_mode = set_multicast_list, |
Stephen Hemminger | ba270ed | 2009-01-09 13:01:42 +0000 | [diff] [blame] | 1122 | .ndo_tx_timeout = i596_tx_timeout, |
| 1123 | .ndo_change_mtu = eth_change_mtu, |
| 1124 | .ndo_set_mac_address = eth_mac_addr, |
| 1125 | .ndo_validate_addr = eth_validate_addr, |
| 1126 | }; |
| 1127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | struct net_device * __init i82596_probe(int unit) |
| 1129 | { |
| 1130 | struct net_device *dev; |
| 1131 | int i; |
| 1132 | struct i596_private *lp; |
| 1133 | char eth_addr[8]; |
| 1134 | static int probed; |
| 1135 | int err; |
| 1136 | |
| 1137 | if (probed) |
| 1138 | return ERR_PTR(-ENODEV); |
| 1139 | probed++; |
| 1140 | |
| 1141 | dev = alloc_etherdev(0); |
| 1142 | if (!dev) |
| 1143 | return ERR_PTR(-ENOMEM); |
| 1144 | |
| 1145 | if (unit >= 0) { |
| 1146 | sprintf(dev->name, "eth%d", unit); |
| 1147 | netdev_boot_setup_check(dev); |
| 1148 | } else { |
| 1149 | dev->base_addr = io; |
| 1150 | dev->irq = irq; |
| 1151 | } |
| 1152 | |
| 1153 | #ifdef ENABLE_MVME16x_NET |
| 1154 | if (MACH_IS_MVME16x) { |
| 1155 | if (mvme16x_config & MVME16x_CONFIG_NO_ETHERNET) { |
| 1156 | printk(KERN_NOTICE "Ethernet probe disabled - chip not present\n"); |
| 1157 | err = -ENODEV; |
| 1158 | goto out; |
| 1159 | } |
| 1160 | memcpy(eth_addr, (void *) 0xfffc1f2c, 6); /* YUCK! Get addr from NOVRAM */ |
| 1161 | dev->base_addr = MVME_I596_BASE; |
| 1162 | dev->irq = (unsigned) MVME16x_IRQ_I596; |
Geert Uytterhoeven | 0f73448 | 2008-05-18 20:47:16 +0200 | [diff] [blame] | 1163 | goto found; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | } |
| 1165 | #endif |
| 1166 | #ifdef ENABLE_BVME6000_NET |
| 1167 | if (MACH_IS_BVME6000) { |
| 1168 | volatile unsigned char *rtc = (unsigned char *) BVME_RTC_BASE; |
| 1169 | unsigned char msr = rtc[3]; |
| 1170 | int i; |
| 1171 | |
| 1172 | rtc[3] |= 0x80; |
| 1173 | for (i = 0; i < 6; i++) |
| 1174 | eth_addr[i] = rtc[i * 4 + 7]; /* Stored in RTC RAM at offset 1 */ |
| 1175 | rtc[3] = msr; |
| 1176 | dev->base_addr = BVME_I596_BASE; |
| 1177 | dev->irq = (unsigned) BVME_IRQ_I596; |
Geert Uytterhoeven | 0f73448 | 2008-05-18 20:47:16 +0200 | [diff] [blame] | 1178 | goto found; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | } |
| 1180 | #endif |
Geert Uytterhoeven | 0f73448 | 2008-05-18 20:47:16 +0200 | [diff] [blame] | 1181 | err = -ENODEV; |
| 1182 | goto out; |
| 1183 | |
| 1184 | found: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | dev->mem_start = (int)__get_free_pages(GFP_ATOMIC, 0); |
| 1186 | if (!dev->mem_start) { |
| 1187 | err = -ENOMEM; |
| 1188 | goto out1; |
| 1189 | } |
| 1190 | |
| 1191 | DEB(DEB_PROBE,printk(KERN_INFO "%s: 82596 at %#3lx,", dev->name, dev->base_addr)); |
| 1192 | |
| 1193 | for (i = 0; i < 6; i++) |
| 1194 | DEB(DEB_PROBE,printk(" %2.2X", dev->dev_addr[i] = eth_addr[i])); |
| 1195 | |
| 1196 | DEB(DEB_PROBE,printk(" IRQ %d.\n", dev->irq)); |
| 1197 | |
| 1198 | DEB(DEB_PROBE,printk(KERN_INFO "%s", version)); |
| 1199 | |
| 1200 | /* The 82596-specific entries in the device structure. */ |
Stephen Hemminger | ba270ed | 2009-01-09 13:01:42 +0000 | [diff] [blame] | 1201 | dev->netdev_ops = &i596_netdev_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | dev->watchdog_timeo = TX_TIMEOUT; |
| 1203 | |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 1204 | dev->ml_priv = (void *)(dev->mem_start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 1206 | lp = dev->ml_priv; |
Andrew Morton | 9e8e83d | 2007-01-27 00:00:04 -0800 | [diff] [blame] | 1207 | DEB(DEB_INIT,printk(KERN_DEBUG "%s: lp at 0x%08lx (%zd bytes), " |
| 1208 | "lp->scb at 0x%08lx\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | dev->name, (unsigned long)lp, |
| 1210 | sizeof(struct i596_private), (unsigned long)&lp->scb)); |
| 1211 | memset((void *) lp, 0, sizeof(struct i596_private)); |
| 1212 | |
| 1213 | #ifdef __mc68000__ |
| 1214 | cache_push(virt_to_phys((void *)(dev->mem_start)), 4096); |
| 1215 | cache_clear(virt_to_phys((void *)(dev->mem_start)), 4096); |
| 1216 | kernel_set_cachemode((void *)(dev->mem_start), 4096, IOMAP_NOCACHE_SER); |
| 1217 | #endif |
| 1218 | lp->scb.command = 0; |
| 1219 | lp->scb.cmd = I596_NULL; |
| 1220 | lp->scb.rfd = I596_NULL; |
| 1221 | spin_lock_init(&lp->lock); |
| 1222 | |
| 1223 | err = register_netdev(dev); |
| 1224 | if (err) |
| 1225 | goto out2; |
| 1226 | return dev; |
| 1227 | out2: |
| 1228 | #ifdef __mc68000__ |
| 1229 | /* XXX This assumes default cache mode to be IOMAP_FULL_CACHING, |
| 1230 | * XXX which may be invalid (CONFIG_060_WRITETHROUGH) |
| 1231 | */ |
| 1232 | kernel_set_cachemode((void *)(dev->mem_start), 4096, |
| 1233 | IOMAP_FULL_CACHING); |
| 1234 | #endif |
| 1235 | free_page ((u32)(dev->mem_start)); |
| 1236 | out1: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | out: |
| 1238 | free_netdev(dev); |
| 1239 | return ERR_PTR(err); |
| 1240 | } |
| 1241 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1242 | static irqreturn_t i596_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | { |
| 1244 | struct net_device *dev = dev_id; |
| 1245 | struct i596_private *lp; |
| 1246 | short ioaddr; |
| 1247 | unsigned short status, ack_cmd = 0; |
| 1248 | int handled = 0; |
| 1249 | |
| 1250 | #ifdef ENABLE_BVME6000_NET |
| 1251 | if (MACH_IS_BVME6000) { |
| 1252 | if (*(char *) BVME_LOCAL_IRQ_STAT & BVME_ETHERR) { |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1253 | i596_error(irq, dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | return IRQ_HANDLED; |
| 1255 | } |
| 1256 | } |
| 1257 | #endif |
| 1258 | if (dev == NULL) { |
| 1259 | printk(KERN_ERR "i596_interrupt(): irq %d for unknown device.\n", irq); |
| 1260 | return IRQ_NONE; |
| 1261 | } |
| 1262 | |
| 1263 | ioaddr = dev->base_addr; |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 1264 | lp = dev->ml_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | |
| 1266 | spin_lock (&lp->lock); |
| 1267 | |
| 1268 | wait_cmd(dev,lp,100,"i596 interrupt, timeout"); |
| 1269 | status = lp->scb.status; |
| 1270 | |
| 1271 | DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt, IRQ %d, status %4.4x.\n", |
| 1272 | dev->name, irq, status)); |
| 1273 | |
| 1274 | ack_cmd = status & 0xf000; |
| 1275 | |
| 1276 | if ((status & 0x8000) || (status & 0x2000)) { |
| 1277 | struct i596_cmd *ptr; |
| 1278 | |
| 1279 | handled = 1; |
| 1280 | if ((status & 0x8000)) |
| 1281 | DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt completed command.\n", dev->name)); |
| 1282 | if ((status & 0x2000)) |
| 1283 | DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt command unit inactive %x.\n", dev->name, status & 0x0700)); |
| 1284 | |
| 1285 | while ((lp->cmd_head != I596_NULL) && (lp->cmd_head->status & STAT_C)) { |
| 1286 | ptr = lp->cmd_head; |
| 1287 | |
| 1288 | DEB(DEB_STATUS,printk(KERN_DEBUG "cmd_head->status = %04x, ->command = %04x\n", |
| 1289 | lp->cmd_head->status, lp->cmd_head->command)); |
| 1290 | lp->cmd_head = ptr->v_next; |
| 1291 | lp->cmd_backlog--; |
| 1292 | |
| 1293 | switch ((ptr->command) & 0x7) { |
| 1294 | case CmdTx: |
| 1295 | { |
| 1296 | struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr; |
| 1297 | struct sk_buff *skb = tx_cmd->skb; |
| 1298 | |
| 1299 | if ((ptr->status) & STAT_OK) { |
| 1300 | DEB(DEB_TXADDR,print_eth(skb->data, "tx-done")); |
| 1301 | } else { |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1302 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | if ((ptr->status) & 0x0020) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1304 | dev->stats.collisions++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | if (!((ptr->status) & 0x0040)) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1306 | dev->stats.tx_heartbeat_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | if ((ptr->status) & 0x0400) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1308 | dev->stats.tx_carrier_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1309 | if ((ptr->status) & 0x0800) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1310 | dev->stats.collisions++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | if ((ptr->status) & 0x1000) |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1312 | dev->stats.tx_aborted_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | } |
| 1314 | |
| 1315 | dev_kfree_skb_irq(skb); |
| 1316 | |
| 1317 | tx_cmd->cmd.command = 0; /* Mark free */ |
| 1318 | break; |
| 1319 | } |
| 1320 | case CmdTDR: |
| 1321 | { |
| 1322 | unsigned short status = ((struct tdr_cmd *)ptr)->status; |
| 1323 | |
| 1324 | if (status & 0x8000) { |
| 1325 | DEB(DEB_TDR,printk(KERN_INFO "%s: link ok.\n", dev->name)); |
| 1326 | } else { |
| 1327 | if (status & 0x4000) |
| 1328 | printk(KERN_ERR "%s: Transceiver problem.\n", dev->name); |
| 1329 | if (status & 0x2000) |
| 1330 | printk(KERN_ERR "%s: Termination problem.\n", dev->name); |
| 1331 | if (status & 0x1000) |
| 1332 | printk(KERN_ERR "%s: Short circuit.\n", dev->name); |
| 1333 | |
| 1334 | DEB(DEB_TDR,printk(KERN_INFO "%s: Time %d.\n", dev->name, status & 0x07ff)); |
| 1335 | } |
| 1336 | break; |
| 1337 | } |
| 1338 | case CmdConfigure: |
| 1339 | case CmdMulticastList: |
| 1340 | /* Zap command so set_multicast_list() knows it is free */ |
| 1341 | ptr->command = 0; |
| 1342 | break; |
| 1343 | } |
| 1344 | ptr->v_next = ptr->b_next = I596_NULL; |
| 1345 | lp->last_cmd = jiffies; |
| 1346 | } |
| 1347 | |
| 1348 | ptr = lp->cmd_head; |
| 1349 | while ((ptr != I596_NULL) && (ptr != lp->cmd_tail)) { |
| 1350 | ptr->command &= 0x1fff; |
| 1351 | ptr = ptr->v_next; |
| 1352 | } |
| 1353 | |
| 1354 | if ((lp->cmd_head != I596_NULL)) |
| 1355 | ack_cmd |= CUC_START; |
| 1356 | lp->scb.cmd = WSWAPcmd(virt_to_bus(&lp->cmd_head->status)); |
| 1357 | } |
| 1358 | if ((status & 0x1000) || (status & 0x4000)) { |
| 1359 | if ((status & 0x4000)) |
| 1360 | DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt received a frame.\n", dev->name)); |
| 1361 | i596_rx(dev); |
| 1362 | /* Only RX_START if stopped - RGH 07-07-96 */ |
| 1363 | if (status & 0x1000) { |
| 1364 | if (netif_running(dev)) { |
| 1365 | DEB(DEB_ERRORS,printk(KERN_ERR "%s: i596 interrupt receive unit inactive, status 0x%x\n", dev->name, status)); |
| 1366 | ack_cmd |= RX_START; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 1367 | dev->stats.rx_errors++; |
| 1368 | dev->stats.rx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | rebuild_rx_bufs(dev); |
| 1370 | } |
| 1371 | } |
| 1372 | } |
| 1373 | wait_cmd(dev,lp,100,"i596 interrupt, timeout"); |
| 1374 | lp->scb.command = ack_cmd; |
| 1375 | |
| 1376 | #ifdef ENABLE_MVME16x_NET |
| 1377 | if (MACH_IS_MVME16x) { |
| 1378 | /* Ack the interrupt */ |
| 1379 | |
| 1380 | volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; |
| 1381 | |
| 1382 | pcc2[0x2a] |= 0x08; |
| 1383 | } |
| 1384 | #endif |
| 1385 | #ifdef ENABLE_BVME6000_NET |
| 1386 | if (MACH_IS_BVME6000) { |
| 1387 | volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG; |
| 1388 | |
| 1389 | *ethirq = 1; |
| 1390 | *ethirq = 3; |
| 1391 | } |
| 1392 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | CA(dev); |
| 1394 | |
| 1395 | DEB(DEB_INTS,printk(KERN_DEBUG "%s: exiting interrupt.\n", dev->name)); |
| 1396 | |
| 1397 | spin_unlock (&lp->lock); |
| 1398 | return IRQ_RETVAL(handled); |
| 1399 | } |
| 1400 | |
| 1401 | static int i596_close(struct net_device *dev) |
| 1402 | { |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 1403 | struct i596_private *lp = dev->ml_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1404 | unsigned long flags; |
| 1405 | |
| 1406 | netif_stop_queue(dev); |
| 1407 | |
| 1408 | DEB(DEB_INIT,printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.\n", |
| 1409 | dev->name, lp->scb.status)); |
| 1410 | |
| 1411 | spin_lock_irqsave(&lp->lock, flags); |
| 1412 | |
| 1413 | wait_cmd(dev,lp,100,"close1 timed out"); |
| 1414 | lp->scb.command = CUC_ABORT | RX_ABORT; |
| 1415 | CA(dev); |
| 1416 | |
| 1417 | wait_cmd(dev,lp,100,"close2 timed out"); |
| 1418 | |
| 1419 | spin_unlock_irqrestore(&lp->lock, flags); |
| 1420 | DEB(DEB_STRUCT,i596_display_data(dev)); |
| 1421 | i596_cleanup_cmd(dev,lp); |
| 1422 | |
| 1423 | #ifdef ENABLE_MVME16x_NET |
| 1424 | if (MACH_IS_MVME16x) { |
| 1425 | volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; |
| 1426 | |
| 1427 | /* Disable all ints */ |
| 1428 | pcc2[0x28] = 1; |
| 1429 | pcc2[0x2a] = 0x40; |
| 1430 | pcc2[0x2b] = 0x40; /* Set snooping bits now! */ |
| 1431 | } |
| 1432 | #endif |
| 1433 | #ifdef ENABLE_BVME6000_NET |
| 1434 | if (MACH_IS_BVME6000) { |
| 1435 | volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG; |
| 1436 | |
| 1437 | *ethirq = 1; |
| 1438 | } |
| 1439 | #endif |
| 1440 | |
Kulikov Vasiliy | a607072 | 2010-07-09 02:25:40 +0000 | [diff] [blame] | 1441 | #ifdef ENABLE_MVME16x_NET |
| 1442 | free_irq(0x56, dev); |
| 1443 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1444 | free_irq(dev->irq, dev); |
| 1445 | remove_rx_bufs(dev); |
| 1446 | |
| 1447 | return 0; |
| 1448 | } |
| 1449 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | /* |
| 1451 | * Set or clear the multicast filter for this adaptor. |
| 1452 | */ |
| 1453 | |
| 1454 | static void set_multicast_list(struct net_device *dev) |
| 1455 | { |
Wang Chen | f3a216d | 2008-11-20 01:01:00 -0800 | [diff] [blame] | 1456 | struct i596_private *lp = dev->ml_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | int config = 0, cnt; |
| 1458 | |
| 1459 | DEB(DEB_MULTI,printk(KERN_DEBUG "%s: set multicast list, %d entries, promisc %s, allmulti %s\n", |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1460 | dev->name, netdev_mc_count(dev), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | dev->flags & IFF_PROMISC ? "ON" : "OFF", |
| 1462 | dev->flags & IFF_ALLMULTI ? "ON" : "OFF")); |
| 1463 | |
| 1464 | if (wait_cfg(dev, &lp->cf_cmd.cmd, 1000, "config change request timed out")) |
| 1465 | return; |
| 1466 | |
| 1467 | if ((dev->flags & IFF_PROMISC) && !(lp->cf_cmd.i596_config[8] & 0x01)) { |
| 1468 | lp->cf_cmd.i596_config[8] |= 0x01; |
| 1469 | config = 1; |
| 1470 | } |
| 1471 | if (!(dev->flags & IFF_PROMISC) && (lp->cf_cmd.i596_config[8] & 0x01)) { |
| 1472 | lp->cf_cmd.i596_config[8] &= ~0x01; |
| 1473 | config = 1; |
| 1474 | } |
| 1475 | if ((dev->flags & IFF_ALLMULTI) && (lp->cf_cmd.i596_config[11] & 0x20)) { |
| 1476 | lp->cf_cmd.i596_config[11] &= ~0x20; |
| 1477 | config = 1; |
| 1478 | } |
| 1479 | if (!(dev->flags & IFF_ALLMULTI) && !(lp->cf_cmd.i596_config[11] & 0x20)) { |
| 1480 | lp->cf_cmd.i596_config[11] |= 0x20; |
| 1481 | config = 1; |
| 1482 | } |
| 1483 | if (config) { |
| 1484 | lp->cf_cmd.cmd.command = CmdConfigure; |
| 1485 | i596_add_cmd(dev, &lp->cf_cmd.cmd); |
| 1486 | } |
| 1487 | |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1488 | cnt = netdev_mc_count(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1489 | if (cnt > MAX_MC_CNT) |
| 1490 | { |
| 1491 | cnt = MAX_MC_CNT; |
| 1492 | printk(KERN_ERR "%s: Only %d multicast addresses supported", |
| 1493 | dev->name, cnt); |
| 1494 | } |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 1495 | |
Jiri Pirko | 4cd24ea | 2010-02-08 04:30:35 +0000 | [diff] [blame] | 1496 | if (!netdev_mc_empty(dev)) { |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1497 | struct netdev_hw_addr *ha; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | unsigned char *cp; |
| 1499 | struct mc_cmd *cmd; |
| 1500 | |
| 1501 | if (wait_cfg(dev, &lp->mc_cmd.cmd, 1000, "multicast list change request timed out")) |
| 1502 | return; |
| 1503 | cmd = &lp->mc_cmd; |
| 1504 | cmd->cmd.command = CmdMulticastList; |
Jiri Pirko | 0ddf477 | 2010-02-20 00:13:58 +0000 | [diff] [blame] | 1505 | cmd->mc_cnt = cnt * ETH_ALEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1506 | cp = cmd->mc_addrs; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1507 | netdev_for_each_mc_addr(ha, dev) { |
Jiri Pirko | 0ddf477 | 2010-02-20 00:13:58 +0000 | [diff] [blame] | 1508 | if (!cnt--) |
| 1509 | break; |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1510 | memcpy(cp, ha->addr, ETH_ALEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | if (i596_debug > 1) |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 1512 | DEB(DEB_MULTI,printk(KERN_INFO "%s: Adding address %pM\n", |
| 1513 | dev->name, cp)); |
Jiri Pirko | 0ddf477 | 2010-02-20 00:13:58 +0000 | [diff] [blame] | 1514 | cp += ETH_ALEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | } |
| 1516 | i596_add_cmd(dev, &cmd->cmd); |
| 1517 | } |
| 1518 | } |
| 1519 | |
| 1520 | #ifdef MODULE |
| 1521 | static struct net_device *dev_82596; |
| 1522 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1523 | static int debug = -1; |
| 1524 | module_param(debug, int, 0); |
| 1525 | MODULE_PARM_DESC(debug, "i82596 debug mask"); |
| 1526 | |
Andrew Morton | 864fe05 | 2006-08-14 22:59:57 -0700 | [diff] [blame] | 1527 | int __init init_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | { |
| 1529 | if (debug >= 0) |
| 1530 | i596_debug = debug; |
| 1531 | dev_82596 = i82596_probe(-1); |
| 1532 | if (IS_ERR(dev_82596)) |
| 1533 | return PTR_ERR(dev_82596); |
| 1534 | return 0; |
| 1535 | } |
| 1536 | |
Andrew Morton | 864fe05 | 2006-08-14 22:59:57 -0700 | [diff] [blame] | 1537 | void __exit cleanup_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | { |
| 1539 | unregister_netdev(dev_82596); |
| 1540 | #ifdef __mc68000__ |
| 1541 | /* XXX This assumes default cache mode to be IOMAP_FULL_CACHING, |
| 1542 | * XXX which may be invalid (CONFIG_060_WRITETHROUGH) |
| 1543 | */ |
| 1544 | |
| 1545 | kernel_set_cachemode((void *)(dev_82596->mem_start), 4096, |
| 1546 | IOMAP_FULL_CACHING); |
| 1547 | #endif |
| 1548 | free_page ((u32)(dev_82596->mem_start)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | free_netdev(dev_82596); |
| 1550 | } |
| 1551 | |
| 1552 | #endif /* MODULE */ |