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1da177e4 LT |
1 | /* lasi_82596.c -- driver for the intel 82596 ethernet controller, as |
2 | munged into HPPA boxen . | |
3 | ||
4 | This driver is based upon 82596.c, original credits are below... | |
5 | but there were too many hoops which HP wants jumped through to | |
6 | keep this code in there in a sane manner. | |
7 | ||
6aa20a22 | 8 | 3 primary sources of the mess -- |
1da177e4 LT |
9 | 1) hppa needs *lots* of cacheline flushing to keep this kind of |
10 | MMIO running. | |
11 | ||
12 | 2) The 82596 needs to see all of its pointers as their physical | |
13 | address. Thus virt_to_bus/bus_to_virt are *everywhere*. | |
14 | ||
6aa20a22 | 15 | 3) The implementation HP is using seems to be significantly pickier |
1da177e4 LT |
16 | about when and how the command and RX units are started. some |
17 | command ordering was changed. | |
18 | ||
19 | Examination of the mach driver leads one to believe that there | |
20 | might be a saner way to pull this off... anyone who feels like a | |
21 | full rewrite can be my guest. | |
22 | ||
23 | Split 02/13/2000 Sam Creasey (sammy@oh.verio.com) | |
6aa20a22 | 24 | |
1da177e4 LT |
25 | 02/01/2000 Initial modifications for parisc by Helge Deller (deller@gmx.de) |
26 | 03/02/2000 changes for better/correct(?) cache-flushing (deller) | |
27 | */ | |
28 | ||
29 | /* 82596.c: A generic 82596 ethernet driver for linux. */ | |
30 | /* | |
31 | Based on Apricot.c | |
32 | Written 1994 by Mark Evans. | |
33 | This driver is for the Apricot 82596 bus-master interface | |
34 | ||
35 | Modularised 12/94 Mark Evans | |
36 | ||
37 | ||
38 | Modified to support the 82596 ethernet chips on 680x0 VME boards. | |
39 | by Richard Hirst <richard@sleepie.demon.co.uk> | |
40 | Renamed to be 82596.c | |
41 | ||
42 | 980825: Changed to receive directly in to sk_buffs which are | |
43 | allocated at open() time. Eliminates copy on incoming frames | |
44 | (small ones are still copied). Shared data now held in a | |
45 | non-cached page, so we can run on 68060 in copyback mode. | |
46 | ||
47 | TBD: | |
48 | * look at deferring rx frames rather than discarding (as per tulip) | |
49 | * handle tx ring full as per tulip | |
50 | * performace test to tune rx_copybreak | |
51 | ||
52 | Most of my modifications relate to the braindead big-endian | |
53 | implementation by Intel. When the i596 is operating in | |
54 | 'big-endian' mode, it thinks a 32 bit value of 0x12345678 | |
55 | should be stored as 0x56781234. This is a real pain, when | |
56 | you have linked lists which are shared by the 680x0 and the | |
57 | i596. | |
58 | ||
59 | Driver skeleton | |
60 | Written 1993 by Donald Becker. | |
61 | Copyright 1993 United States Government as represented by the Director, | |
62 | National Security Agency. This software may only be used and distributed | |
63 | according to the terms of the GNU General Public License as modified by SRC, | |
64 | incorporated herein by reference. | |
65 | ||
66 | The author may be reached as becker@scyld.com, or C/O | |
67 | Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403 | |
68 | ||
69 | */ | |
70 | ||
71 | #include <linux/module.h> | |
72 | #include <linux/kernel.h> | |
73 | #include <linux/string.h> | |
74 | #include <linux/ptrace.h> | |
75 | #include <linux/errno.h> | |
76 | #include <linux/ioport.h> | |
77 | #include <linux/slab.h> | |
78 | #include <linux/interrupt.h> | |
79 | #include <linux/delay.h> | |
80 | #include <linux/netdevice.h> | |
81 | #include <linux/etherdevice.h> | |
82 | #include <linux/skbuff.h> | |
83 | #include <linux/init.h> | |
84 | #include <linux/pci.h> | |
85 | #include <linux/types.h> | |
86 | #include <linux/bitops.h> | |
87 | ||
88 | #include <asm/io.h> | |
89 | #include <asm/pgtable.h> | |
90 | #include <asm/irq.h> | |
91 | #include <asm/pdc.h> | |
92 | #include <asm/cache.h> | |
93 | #include <asm/parisc-device.h> | |
94 | ||
95 | #define LASI_82596_DRIVER_VERSION "LASI 82596 driver - Revision: 1.30" | |
96 | ||
97 | /* DEBUG flags | |
98 | */ | |
99 | ||
100 | #define DEB_INIT 0x0001 | |
101 | #define DEB_PROBE 0x0002 | |
102 | #define DEB_SERIOUS 0x0004 | |
103 | #define DEB_ERRORS 0x0008 | |
104 | #define DEB_MULTI 0x0010 | |
105 | #define DEB_TDR 0x0020 | |
106 | #define DEB_OPEN 0x0040 | |
107 | #define DEB_RESET 0x0080 | |
108 | #define DEB_ADDCMD 0x0100 | |
109 | #define DEB_STATUS 0x0200 | |
110 | #define DEB_STARTTX 0x0400 | |
111 | #define DEB_RXADDR 0x0800 | |
112 | #define DEB_TXADDR 0x1000 | |
113 | #define DEB_RXFRAME 0x2000 | |
114 | #define DEB_INTS 0x4000 | |
115 | #define DEB_STRUCT 0x8000 | |
116 | #define DEB_ANY 0xffff | |
117 | ||
118 | ||
119 | #define DEB(x,y) if (i596_debug & (x)) { y; } | |
120 | ||
121 | ||
122 | #define CHECK_WBACK(addr,len) \ | |
123 | do { dma_cache_sync((void *)addr, len, DMA_TO_DEVICE); } while (0) | |
124 | ||
125 | #define CHECK_INV(addr,len) \ | |
126 | do { dma_cache_sync((void *)addr, len, DMA_FROM_DEVICE); } while(0) | |
127 | ||
128 | #define CHECK_WBACK_INV(addr,len) \ | |
129 | do { dma_cache_sync((void *)addr, len, DMA_BIDIRECTIONAL); } while (0) | |
130 | ||
131 | ||
132 | #define PA_I82596_RESET 0 /* Offsets relative to LASI-LAN-Addr.*/ | |
133 | #define PA_CPU_PORT_L_ACCESS 4 | |
134 | #define PA_CHANNEL_ATTENTION 8 | |
135 | ||
136 | ||
137 | /* | |
138 | * Define various macros for Channel Attention, word swapping etc., dependent | |
139 | * on architecture. MVME and BVME are 680x0 based, otherwise it is Intel. | |
140 | */ | |
141 | ||
142 | #ifdef __BIG_ENDIAN | |
143 | #define WSWAPrfd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) | |
144 | #define WSWAPrbd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) | |
145 | #define WSWAPiscp(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) | |
146 | #define WSWAPscb(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) | |
147 | #define WSWAPcmd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) | |
148 | #define WSWAPtbd(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) | |
149 | #define WSWAPchar(x) (((u32)(x)<<16) | ((((u32)(x)))>>16)) | |
150 | #define ISCP_BUSY 0x00010000 | |
151 | #define MACH_IS_APRICOT 0 | |
152 | #else | |
153 | #define WSWAPrfd(x) ((struct i596_rfd *)(x)) | |
154 | #define WSWAPrbd(x) ((struct i596_rbd *)(x)) | |
155 | #define WSWAPiscp(x) ((struct i596_iscp *)(x)) | |
156 | #define WSWAPscb(x) ((struct i596_scb *)(x)) | |
157 | #define WSWAPcmd(x) ((struct i596_cmd *)(x)) | |
158 | #define WSWAPtbd(x) ((struct i596_tbd *)(x)) | |
159 | #define WSWAPchar(x) ((char *)(x)) | |
160 | #define ISCP_BUSY 0x0001 | |
161 | #define MACH_IS_APRICOT 1 | |
162 | #endif | |
163 | ||
164 | /* | |
165 | * The MPU_PORT command allows direct access to the 82596. With PORT access | |
166 | * the following commands are available (p5-18). The 32-bit port command | |
167 | * must be word-swapped with the most significant word written first. | |
168 | * This only applies to VME boards. | |
169 | */ | |
170 | #define PORT_RESET 0x00 /* reset 82596 */ | |
171 | #define PORT_SELFTEST 0x01 /* selftest */ | |
172 | #define PORT_ALTSCP 0x02 /* alternate SCB address */ | |
173 | #define PORT_ALTDUMP 0x03 /* Alternate DUMP address */ | |
174 | ||
6aa20a22 | 175 | static int i596_debug = (DEB_SERIOUS|DEB_PROBE); |
1da177e4 LT |
176 | |
177 | MODULE_AUTHOR("Richard Hirst"); | |
178 | MODULE_DESCRIPTION("i82596 driver"); | |
179 | MODULE_LICENSE("GPL"); | |
8d3b33f6 | 180 | module_param(i596_debug, int, 0); |
1da177e4 LT |
181 | MODULE_PARM_DESC(i596_debug, "lasi_82596 debug mask"); |
182 | ||
183 | /* Copy frames shorter than rx_copybreak, otherwise pass on up in | |
184 | * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha). | |
185 | */ | |
186 | static int rx_copybreak = 100; | |
187 | ||
188 | #define MAX_DRIVERS 4 /* max count of drivers */ | |
189 | ||
190 | #define PKT_BUF_SZ 1536 | |
191 | #define MAX_MC_CNT 64 | |
192 | ||
193 | #define I596_NULL ((u32)0xffffffff) | |
194 | ||
195 | #define CMD_EOL 0x8000 /* The last command of the list, stop. */ | |
196 | #define CMD_SUSP 0x4000 /* Suspend after doing cmd. */ | |
197 | #define CMD_INTR 0x2000 /* Interrupt after doing cmd. */ | |
198 | ||
199 | #define CMD_FLEX 0x0008 /* Enable flexible memory model */ | |
200 | ||
201 | enum commands { | |
202 | CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3, | |
203 | CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7 | |
204 | }; | |
205 | ||
206 | #define STAT_C 0x8000 /* Set to 0 after execution */ | |
207 | #define STAT_B 0x4000 /* Command being executed */ | |
208 | #define STAT_OK 0x2000 /* Command executed ok */ | |
209 | #define STAT_A 0x1000 /* Command aborted */ | |
210 | ||
211 | #define CUC_START 0x0100 | |
212 | #define CUC_RESUME 0x0200 | |
213 | #define CUC_SUSPEND 0x0300 | |
214 | #define CUC_ABORT 0x0400 | |
215 | #define RX_START 0x0010 | |
216 | #define RX_RESUME 0x0020 | |
217 | #define RX_SUSPEND 0x0030 | |
218 | #define RX_ABORT 0x0040 | |
219 | ||
220 | #define TX_TIMEOUT 5 | |
221 | ||
222 | #define OPT_SWAP_PORT 0x0001 /* Need to wordswp on the MPU port */ | |
223 | ||
224 | ||
225 | struct i596_reg { | |
226 | unsigned short porthi; | |
227 | unsigned short portlo; | |
228 | u32 ca; | |
229 | }; | |
230 | ||
231 | #define EOF 0x8000 | |
232 | #define SIZE_MASK 0x3fff | |
233 | ||
234 | struct i596_tbd { | |
235 | unsigned short size; | |
236 | unsigned short pad; | |
237 | dma_addr_t next; | |
238 | dma_addr_t data; | |
239 | u32 cache_pad[5]; /* Total 32 bytes... */ | |
240 | }; | |
241 | ||
242 | /* The command structure has two 'next' pointers; v_next is the address of | |
243 | * the next command as seen by the CPU, b_next is the address of the next | |
244 | * command as seen by the 82596. The b_next pointer, as used by the 82596 | |
245 | * always references the status field of the next command, rather than the | |
246 | * v_next field, because the 82596 is unaware of v_next. It may seem more | |
247 | * logical to put v_next at the end of the structure, but we cannot do that | |
248 | * because the 82596 expects other fields to be there, depending on command | |
249 | * type. | |
250 | */ | |
251 | ||
252 | struct i596_cmd { | |
253 | struct i596_cmd *v_next; /* Address from CPUs viewpoint */ | |
254 | unsigned short status; | |
255 | unsigned short command; | |
256 | dma_addr_t b_next; /* Address from i596 viewpoint */ | |
257 | }; | |
258 | ||
259 | struct tx_cmd { | |
260 | struct i596_cmd cmd; | |
261 | dma_addr_t tbd; | |
262 | unsigned short size; | |
263 | unsigned short pad; | |
264 | struct sk_buff *skb; /* So we can free it after tx */ | |
265 | dma_addr_t dma_addr; | |
266 | #ifdef __LP64__ | |
267 | u32 cache_pad[6]; /* Total 64 bytes... */ | |
6aa20a22 | 268 | #else |
1da177e4 | 269 | u32 cache_pad[1]; /* Total 32 bytes... */ |
6aa20a22 | 270 | #endif |
1da177e4 LT |
271 | }; |
272 | ||
273 | struct tdr_cmd { | |
274 | struct i596_cmd cmd; | |
275 | unsigned short status; | |
276 | unsigned short pad; | |
277 | }; | |
278 | ||
279 | struct mc_cmd { | |
280 | struct i596_cmd cmd; | |
281 | short mc_cnt; | |
282 | char mc_addrs[MAX_MC_CNT*6]; | |
283 | }; | |
284 | ||
285 | struct sa_cmd { | |
286 | struct i596_cmd cmd; | |
287 | char eth_addr[8]; | |
288 | }; | |
289 | ||
290 | struct cf_cmd { | |
291 | struct i596_cmd cmd; | |
292 | char i596_config[16]; | |
293 | }; | |
294 | ||
295 | struct i596_rfd { | |
296 | unsigned short stat; | |
297 | unsigned short cmd; | |
298 | dma_addr_t b_next; /* Address from i596 viewpoint */ | |
299 | dma_addr_t rbd; | |
300 | unsigned short count; | |
301 | unsigned short size; | |
302 | struct i596_rfd *v_next; /* Address from CPUs viewpoint */ | |
303 | struct i596_rfd *v_prev; | |
6aa20a22 | 304 | #ifndef __LP64__ |
1da177e4 | 305 | u32 cache_pad[2]; /* Total 32 bytes... */ |
6aa20a22 | 306 | #endif |
1da177e4 LT |
307 | }; |
308 | ||
309 | struct i596_rbd { | |
310 | /* hardware data */ | |
311 | unsigned short count; | |
312 | unsigned short zero1; | |
313 | dma_addr_t b_next; | |
314 | dma_addr_t b_data; /* Address from i596 viewpoint */ | |
315 | unsigned short size; | |
316 | unsigned short zero2; | |
317 | /* driver data */ | |
318 | struct sk_buff *skb; | |
319 | struct i596_rbd *v_next; | |
320 | dma_addr_t b_addr; /* This rbd addr from i596 view */ | |
321 | unsigned char *v_data; /* Address from CPUs viewpoint */ | |
322 | /* Total 32 bytes... */ | |
323 | #ifdef __LP64__ | |
324 | u32 cache_pad[4]; | |
6aa20a22 | 325 | #endif |
1da177e4 LT |
326 | }; |
327 | ||
328 | /* These values as chosen so struct i596_private fits in one page... */ | |
329 | ||
330 | #define TX_RING_SIZE 32 | |
331 | #define RX_RING_SIZE 16 | |
332 | ||
333 | struct i596_scb { | |
334 | unsigned short status; | |
335 | unsigned short command; | |
336 | dma_addr_t cmd; | |
337 | dma_addr_t rfd; | |
338 | u32 crc_err; | |
339 | u32 align_err; | |
340 | u32 resource_err; | |
341 | u32 over_err; | |
342 | u32 rcvdt_err; | |
343 | u32 short_err; | |
344 | unsigned short t_on; | |
345 | unsigned short t_off; | |
346 | }; | |
347 | ||
348 | struct i596_iscp { | |
349 | u32 stat; | |
350 | dma_addr_t scb; | |
351 | }; | |
352 | ||
353 | struct i596_scp { | |
354 | u32 sysbus; | |
355 | u32 pad; | |
356 | dma_addr_t iscp; | |
357 | }; | |
358 | ||
359 | struct i596_private { | |
360 | volatile struct i596_scp scp __attribute__((aligned(32))); | |
361 | volatile struct i596_iscp iscp __attribute__((aligned(32))); | |
362 | volatile struct i596_scb scb __attribute__((aligned(32))); | |
363 | struct sa_cmd sa_cmd __attribute__((aligned(32))); | |
364 | struct cf_cmd cf_cmd __attribute__((aligned(32))); | |
365 | struct tdr_cmd tdr_cmd __attribute__((aligned(32))); | |
366 | struct mc_cmd mc_cmd __attribute__((aligned(32))); | |
367 | struct i596_rfd rfds[RX_RING_SIZE] __attribute__((aligned(32))); | |
368 | struct i596_rbd rbds[RX_RING_SIZE] __attribute__((aligned(32))); | |
369 | struct tx_cmd tx_cmds[TX_RING_SIZE] __attribute__((aligned(32))); | |
370 | struct i596_tbd tbds[TX_RING_SIZE] __attribute__((aligned(32))); | |
371 | u32 stat; | |
372 | int last_restart; | |
373 | struct i596_rfd *rfd_head; | |
374 | struct i596_rbd *rbd_head; | |
375 | struct i596_cmd *cmd_tail; | |
376 | struct i596_cmd *cmd_head; | |
377 | int cmd_backlog; | |
378 | u32 last_cmd; | |
379 | struct net_device_stats stats; | |
380 | int next_tx_cmd; | |
381 | int options; | |
382 | spinlock_t lock; | |
383 | dma_addr_t dma_addr; | |
384 | struct device *dev; | |
385 | }; | |
386 | ||
387 | static char init_setup[] = | |
388 | { | |
389 | 0x8E, /* length, prefetch on */ | |
390 | 0xC8, /* fifo to 8, monitor off */ | |
391 | 0x80, /* don't save bad frames */ | |
392 | 0x2E, /* No source address insertion, 8 byte preamble */ | |
393 | 0x00, /* priority and backoff defaults */ | |
394 | 0x60, /* interframe spacing */ | |
395 | 0x00, /* slot time LSB */ | |
396 | 0xf2, /* slot time and retries */ | |
397 | 0x00, /* promiscuous mode */ | |
398 | 0x00, /* collision detect */ | |
399 | 0x40, /* minimum frame length */ | |
400 | 0xff, | |
401 | 0x00, | |
402 | 0x7f /* *multi IA */ }; | |
403 | ||
404 | static int i596_open(struct net_device *dev); | |
405 | static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
406 | static irqreturn_t i596_interrupt(int irq, void *dev_id, struct pt_regs *regs); | |
407 | static int i596_close(struct net_device *dev); | |
408 | static struct net_device_stats *i596_get_stats(struct net_device *dev); | |
409 | static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd); | |
410 | static void i596_tx_timeout (struct net_device *dev); | |
411 | static void print_eth(unsigned char *buf, char *str); | |
412 | static void set_multicast_list(struct net_device *dev); | |
413 | ||
414 | static int rx_ring_size = RX_RING_SIZE; | |
415 | static int ticks_limit = 100; | |
416 | static int max_cmd_backlog = TX_RING_SIZE-1; | |
417 | ||
c2709020 SS |
418 | #ifdef CONFIG_NET_POLL_CONTROLLER |
419 | static void i596_poll_controller(struct net_device *dev); | |
420 | #endif | |
421 | ||
1da177e4 LT |
422 | |
423 | static inline void CA(struct net_device *dev) | |
424 | { | |
425 | gsc_writel(0, dev->base_addr + PA_CHANNEL_ATTENTION); | |
426 | } | |
427 | ||
428 | ||
429 | static inline void MPU_PORT(struct net_device *dev, int c, dma_addr_t x) | |
430 | { | |
431 | struct i596_private *lp = dev->priv; | |
432 | ||
433 | u32 v = (u32) (c) | (u32) (x); | |
434 | u16 a, b; | |
435 | ||
436 | if (lp->options & OPT_SWAP_PORT) { | |
437 | a = v >> 16; | |
438 | b = v & 0xffff; | |
439 | } else { | |
440 | a = v & 0xffff; | |
441 | b = v >> 16; | |
442 | } | |
443 | ||
444 | gsc_writel(a, dev->base_addr + PA_CPU_PORT_L_ACCESS); | |
445 | udelay(1); | |
446 | gsc_writel(b, dev->base_addr + PA_CPU_PORT_L_ACCESS); | |
447 | } | |
448 | ||
449 | ||
450 | static inline int wait_istat(struct net_device *dev, struct i596_private *lp, int delcnt, char *str) | |
451 | { | |
452 | CHECK_INV(&(lp->iscp), sizeof(struct i596_iscp)); | |
453 | while (--delcnt && lp->iscp.stat) { | |
454 | udelay(10); | |
455 | CHECK_INV(&(lp->iscp), sizeof(struct i596_iscp)); | |
456 | } | |
457 | if (!delcnt) { | |
458 | printk("%s: %s, iscp.stat %04x, didn't clear\n", | |
459 | dev->name, str, lp->iscp.stat); | |
460 | return -1; | |
461 | } | |
462 | else | |
463 | return 0; | |
464 | } | |
465 | ||
466 | ||
467 | static inline int wait_cmd(struct net_device *dev, struct i596_private *lp, int delcnt, char *str) | |
468 | { | |
469 | CHECK_INV(&(lp->scb), sizeof(struct i596_scb)); | |
470 | while (--delcnt && lp->scb.command) { | |
471 | udelay(10); | |
472 | CHECK_INV(&(lp->scb), sizeof(struct i596_scb)); | |
473 | } | |
474 | if (!delcnt) { | |
475 | printk("%s: %s, status %4.4x, cmd %4.4x.\n", | |
476 | dev->name, str, lp->scb.status, lp->scb.command); | |
477 | return -1; | |
478 | } | |
479 | else | |
480 | return 0; | |
481 | } | |
482 | ||
483 | ||
484 | static void i596_display_data(struct net_device *dev) | |
485 | { | |
486 | struct i596_private *lp = dev->priv; | |
487 | struct i596_cmd *cmd; | |
488 | struct i596_rfd *rfd; | |
489 | struct i596_rbd *rbd; | |
490 | ||
491 | printk("lp and scp at %p, .sysbus = %08x, .iscp = %08x\n", | |
492 | &lp->scp, lp->scp.sysbus, lp->scp.iscp); | |
493 | printk("iscp at %p, iscp.stat = %08x, .scb = %08x\n", | |
494 | &lp->iscp, lp->iscp.stat, lp->iscp.scb); | |
495 | printk("scb at %p, scb.status = %04x, .command = %04x," | |
496 | " .cmd = %08x, .rfd = %08x\n", | |
497 | &lp->scb, lp->scb.status, lp->scb.command, | |
498 | lp->scb.cmd, lp->scb.rfd); | |
499 | printk(" errors: crc %x, align %x, resource %x," | |
500 | " over %x, rcvdt %x, short %x\n", | |
501 | lp->scb.crc_err, lp->scb.align_err, lp->scb.resource_err, | |
502 | lp->scb.over_err, lp->scb.rcvdt_err, lp->scb.short_err); | |
503 | cmd = lp->cmd_head; | |
504 | while (cmd != NULL) { | |
505 | printk("cmd at %p, .status = %04x, .command = %04x, .b_next = %08x\n", | |
506 | cmd, cmd->status, cmd->command, cmd->b_next); | |
507 | cmd = cmd->v_next; | |
508 | } | |
509 | rfd = lp->rfd_head; | |
510 | printk("rfd_head = %p\n", rfd); | |
511 | do { | |
512 | printk(" %p .stat %04x, .cmd %04x, b_next %08x, rbd %08x," | |
513 | " count %04x\n", | |
514 | rfd, rfd->stat, rfd->cmd, rfd->b_next, rfd->rbd, | |
515 | rfd->count); | |
516 | rfd = rfd->v_next; | |
517 | } while (rfd != lp->rfd_head); | |
518 | rbd = lp->rbd_head; | |
519 | printk("rbd_head = %p\n", rbd); | |
520 | do { | |
521 | printk(" %p .count %04x, b_next %08x, b_data %08x, size %04x\n", | |
522 | rbd, rbd->count, rbd->b_next, rbd->b_data, rbd->size); | |
523 | rbd = rbd->v_next; | |
524 | } while (rbd != lp->rbd_head); | |
525 | CHECK_INV(lp, sizeof(struct i596_private)); | |
526 | } | |
527 | ||
528 | ||
529 | #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET) | |
530 | static void i596_error(int irq, void *dev_id, struct pt_regs *regs) | |
531 | { | |
532 | struct net_device *dev = dev_id; | |
533 | volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000; | |
534 | ||
535 | pcc2[0x28] = 1; | |
536 | pcc2[0x2b] = 0x1d; | |
537 | printk("%s: Error interrupt\n", dev->name); | |
538 | i596_display_data(dev); | |
539 | } | |
540 | #endif | |
541 | ||
542 | #define virt_to_dma(lp,v) ((lp)->dma_addr + (dma_addr_t)((unsigned long)(v)-(unsigned long)(lp))) | |
543 | ||
544 | static inline void init_rx_bufs(struct net_device *dev) | |
545 | { | |
546 | struct i596_private *lp = dev->priv; | |
547 | int i; | |
548 | struct i596_rfd *rfd; | |
549 | struct i596_rbd *rbd; | |
550 | ||
551 | /* First build the Receive Buffer Descriptor List */ | |
552 | ||
553 | for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) { | |
554 | dma_addr_t dma_addr; | |
555 | struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ + 4); | |
556 | ||
557 | if (skb == NULL) | |
558 | panic("%s: alloc_skb() failed", __FILE__); | |
559 | skb_reserve(skb, 2); | |
689be439 | 560 | dma_addr = dma_map_single(lp->dev, skb->data,PKT_BUF_SZ, |
1da177e4 LT |
561 | DMA_FROM_DEVICE); |
562 | skb->dev = dev; | |
563 | rbd->v_next = rbd+1; | |
564 | rbd->b_next = WSWAPrbd(virt_to_dma(lp,rbd+1)); | |
565 | rbd->b_addr = WSWAPrbd(virt_to_dma(lp,rbd)); | |
566 | rbd->skb = skb; | |
689be439 | 567 | rbd->v_data = skb->data; |
1da177e4 LT |
568 | rbd->b_data = WSWAPchar(dma_addr); |
569 | rbd->size = PKT_BUF_SZ; | |
570 | } | |
571 | lp->rbd_head = lp->rbds; | |
572 | rbd = lp->rbds + rx_ring_size - 1; | |
573 | rbd->v_next = lp->rbds; | |
574 | rbd->b_next = WSWAPrbd(virt_to_dma(lp,lp->rbds)); | |
575 | ||
576 | /* Now build the Receive Frame Descriptor List */ | |
577 | ||
578 | for (i = 0, rfd = lp->rfds; i < rx_ring_size; i++, rfd++) { | |
579 | rfd->rbd = I596_NULL; | |
580 | rfd->v_next = rfd+1; | |
581 | rfd->v_prev = rfd-1; | |
582 | rfd->b_next = WSWAPrfd(virt_to_dma(lp,rfd+1)); | |
583 | rfd->cmd = CMD_FLEX; | |
584 | } | |
585 | lp->rfd_head = lp->rfds; | |
586 | lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds)); | |
587 | rfd = lp->rfds; | |
588 | rfd->rbd = WSWAPrbd(virt_to_dma(lp,lp->rbd_head)); | |
589 | rfd->v_prev = lp->rfds + rx_ring_size - 1; | |
590 | rfd = lp->rfds + rx_ring_size - 1; | |
591 | rfd->v_next = lp->rfds; | |
592 | rfd->b_next = WSWAPrfd(virt_to_dma(lp,lp->rfds)); | |
593 | rfd->cmd = CMD_EOL|CMD_FLEX; | |
594 | ||
595 | CHECK_WBACK_INV(lp, sizeof(struct i596_private)); | |
596 | } | |
597 | ||
598 | static inline void remove_rx_bufs(struct net_device *dev) | |
599 | { | |
600 | struct i596_private *lp = dev->priv; | |
601 | struct i596_rbd *rbd; | |
602 | int i; | |
603 | ||
604 | for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) { | |
605 | if (rbd->skb == NULL) | |
606 | break; | |
607 | dma_unmap_single(lp->dev, | |
6aa20a22 | 608 | (dma_addr_t)WSWAPchar(rbd->b_data), |
1da177e4 LT |
609 | PKT_BUF_SZ, DMA_FROM_DEVICE); |
610 | dev_kfree_skb(rbd->skb); | |
611 | } | |
612 | } | |
613 | ||
614 | ||
615 | static void rebuild_rx_bufs(struct net_device *dev) | |
616 | { | |
617 | struct i596_private *lp = dev->priv; | |
618 | int i; | |
619 | ||
620 | /* Ensure rx frame/buffer descriptors are tidy */ | |
621 | ||
622 | for (i = 0; i < rx_ring_size; i++) { | |
623 | lp->rfds[i].rbd = I596_NULL; | |
624 | lp->rfds[i].cmd = CMD_FLEX; | |
625 | } | |
626 | lp->rfds[rx_ring_size-1].cmd = CMD_EOL|CMD_FLEX; | |
627 | lp->rfd_head = lp->rfds; | |
628 | lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds)); | |
629 | lp->rbd_head = lp->rbds; | |
630 | lp->rfds[0].rbd = WSWAPrbd(virt_to_dma(lp,lp->rbds)); | |
631 | ||
632 | CHECK_WBACK_INV(lp, sizeof(struct i596_private)); | |
633 | } | |
634 | ||
635 | ||
636 | static int init_i596_mem(struct net_device *dev) | |
637 | { | |
638 | struct i596_private *lp = dev->priv; | |
639 | unsigned long flags; | |
640 | ||
641 | disable_irq(dev->irq); /* disable IRQs from LAN */ | |
642 | DEB(DEB_INIT, | |
c2709020 SS |
643 | printk("RESET 82596 port: %lx (with IRQ %d disabled)\n", |
644 | (dev->base_addr + PA_I82596_RESET), | |
1da177e4 | 645 | dev->irq)); |
6aa20a22 | 646 | |
c2709020 | 647 | gsc_writel(0, (dev->base_addr + PA_I82596_RESET)); /* Hard Reset */ |
1da177e4 LT |
648 | udelay(100); /* Wait 100us - seems to help */ |
649 | ||
650 | /* change the scp address */ | |
651 | ||
652 | lp->last_cmd = jiffies; | |
653 | ||
654 | ||
655 | lp->scp.sysbus = 0x0000006c; | |
656 | lp->scp.iscp = WSWAPiscp(virt_to_dma(lp,&(lp->iscp))); | |
657 | lp->iscp.scb = WSWAPscb(virt_to_dma(lp,&(lp->scb))); | |
658 | lp->iscp.stat = ISCP_BUSY; | |
659 | lp->cmd_backlog = 0; | |
660 | ||
661 | lp->cmd_head = NULL; | |
662 | lp->scb.cmd = I596_NULL; | |
663 | ||
664 | DEB(DEB_INIT, printk("%s: starting i82596.\n", dev->name)); | |
665 | ||
666 | CHECK_WBACK(&(lp->scp), sizeof(struct i596_scp)); | |
667 | CHECK_WBACK(&(lp->iscp), sizeof(struct i596_iscp)); | |
668 | ||
6aa20a22 | 669 | MPU_PORT(dev, PORT_ALTSCP, virt_to_dma(lp,&lp->scp)); |
1da177e4 LT |
670 | |
671 | CA(dev); | |
672 | ||
673 | if (wait_istat(dev, lp, 1000, "initialization timed out")) | |
674 | goto failed; | |
675 | DEB(DEB_INIT, printk("%s: i82596 initialization successful\n", dev->name)); | |
676 | ||
677 | /* Ensure rx frame/buffer descriptors are tidy */ | |
678 | rebuild_rx_bufs(dev); | |
679 | ||
680 | lp->scb.command = 0; | |
681 | CHECK_WBACK(&(lp->scb), sizeof(struct i596_scb)); | |
682 | ||
683 | enable_irq(dev->irq); /* enable IRQs from LAN */ | |
684 | ||
685 | DEB(DEB_INIT, printk("%s: queuing CmdConfigure\n", dev->name)); | |
686 | memcpy(lp->cf_cmd.i596_config, init_setup, 14); | |
687 | lp->cf_cmd.cmd.command = CmdConfigure; | |
688 | CHECK_WBACK(&(lp->cf_cmd), sizeof(struct cf_cmd)); | |
689 | i596_add_cmd(dev, &lp->cf_cmd.cmd); | |
690 | ||
691 | DEB(DEB_INIT, printk("%s: queuing CmdSASetup\n", dev->name)); | |
692 | memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, 6); | |
693 | lp->sa_cmd.cmd.command = CmdSASetup; | |
694 | CHECK_WBACK(&(lp->sa_cmd), sizeof(struct sa_cmd)); | |
695 | i596_add_cmd(dev, &lp->sa_cmd.cmd); | |
696 | ||
697 | DEB(DEB_INIT, printk("%s: queuing CmdTDR\n", dev->name)); | |
698 | lp->tdr_cmd.cmd.command = CmdTDR; | |
699 | CHECK_WBACK(&(lp->tdr_cmd), sizeof(struct tdr_cmd)); | |
700 | i596_add_cmd(dev, &lp->tdr_cmd.cmd); | |
701 | ||
702 | spin_lock_irqsave (&lp->lock, flags); | |
703 | ||
704 | if (wait_cmd(dev, lp, 1000, "timed out waiting to issue RX_START")) { | |
705 | spin_unlock_irqrestore (&lp->lock, flags); | |
706 | goto failed; | |
707 | } | |
708 | DEB(DEB_INIT, printk("%s: Issuing RX_START\n", dev->name)); | |
709 | lp->scb.command = RX_START; | |
710 | lp->scb.rfd = WSWAPrfd(virt_to_dma(lp,lp->rfds)); | |
711 | CHECK_WBACK(&(lp->scb), sizeof(struct i596_scb)); | |
712 | ||
713 | CA(dev); | |
714 | ||
715 | spin_unlock_irqrestore (&lp->lock, flags); | |
716 | ||
717 | if (wait_cmd(dev, lp, 1000, "RX_START not processed")) | |
718 | goto failed; | |
719 | DEB(DEB_INIT, printk("%s: Receive unit started OK\n", dev->name)); | |
720 | ||
721 | return 0; | |
722 | ||
723 | failed: | |
724 | printk("%s: Failed to initialise 82596\n", dev->name); | |
725 | MPU_PORT(dev, PORT_RESET, 0); | |
726 | return -1; | |
727 | } | |
728 | ||
729 | ||
730 | static inline int i596_rx(struct net_device *dev) | |
731 | { | |
732 | struct i596_private *lp = dev->priv; | |
733 | struct i596_rfd *rfd; | |
734 | struct i596_rbd *rbd; | |
735 | int frames = 0; | |
736 | ||
737 | DEB(DEB_RXFRAME, printk("i596_rx(), rfd_head %p, rbd_head %p\n", | |
738 | lp->rfd_head, lp->rbd_head)); | |
739 | ||
740 | ||
741 | rfd = lp->rfd_head; /* Ref next frame to check */ | |
742 | ||
743 | CHECK_INV(rfd, sizeof(struct i596_rfd)); | |
744 | while ((rfd->stat) & STAT_C) { /* Loop while complete frames */ | |
745 | if (rfd->rbd == I596_NULL) | |
746 | rbd = NULL; | |
747 | else if (rfd->rbd == lp->rbd_head->b_addr) { | |
748 | rbd = lp->rbd_head; | |
749 | CHECK_INV(rbd, sizeof(struct i596_rbd)); | |
750 | } | |
751 | else { | |
752 | printk("%s: rbd chain broken!\n", dev->name); | |
753 | /* XXX Now what? */ | |
754 | rbd = NULL; | |
755 | } | |
756 | DEB(DEB_RXFRAME, printk(" rfd %p, rfd.rbd %08x, rfd.stat %04x\n", | |
757 | rfd, rfd->rbd, rfd->stat)); | |
6aa20a22 | 758 | |
1da177e4 LT |
759 | if (rbd != NULL && ((rfd->stat) & STAT_OK)) { |
760 | /* a good frame */ | |
761 | int pkt_len = rbd->count & 0x3fff; | |
762 | struct sk_buff *skb = rbd->skb; | |
763 | int rx_in_place = 0; | |
764 | ||
765 | DEB(DEB_RXADDR,print_eth(rbd->v_data, "received")); | |
766 | frames++; | |
767 | ||
768 | /* Check if the packet is long enough to just accept | |
769 | * without copying to a properly sized skbuff. | |
770 | */ | |
771 | ||
772 | if (pkt_len > rx_copybreak) { | |
773 | struct sk_buff *newskb; | |
774 | dma_addr_t dma_addr; | |
775 | ||
776 | dma_unmap_single(lp->dev,(dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE); | |
777 | /* Get fresh skbuff to replace filled one. */ | |
778 | newskb = dev_alloc_skb(PKT_BUF_SZ + 4); | |
779 | if (newskb == NULL) { | |
780 | skb = NULL; /* drop pkt */ | |
781 | goto memory_squeeze; | |
782 | } | |
783 | skb_reserve(newskb, 2); | |
784 | ||
785 | /* Pass up the skb already on the Rx ring. */ | |
786 | skb_put(skb, pkt_len); | |
787 | rx_in_place = 1; | |
788 | rbd->skb = newskb; | |
789 | newskb->dev = dev; | |
689be439 DM |
790 | dma_addr = dma_map_single(lp->dev, newskb->data, PKT_BUF_SZ, DMA_FROM_DEVICE); |
791 | rbd->v_data = newskb->data; | |
1da177e4 LT |
792 | rbd->b_data = WSWAPchar(dma_addr); |
793 | CHECK_WBACK_INV(rbd, sizeof(struct i596_rbd)); | |
794 | } | |
795 | else | |
796 | skb = dev_alloc_skb(pkt_len + 2); | |
797 | memory_squeeze: | |
798 | if (skb == NULL) { | |
799 | /* XXX tulip.c can defer packets here!! */ | |
800 | printk("%s: i596_rx Memory squeeze, dropping packet.\n", dev->name); | |
801 | lp->stats.rx_dropped++; | |
802 | } | |
803 | else { | |
804 | skb->dev = dev; | |
805 | if (!rx_in_place) { | |
806 | /* 16 byte align the data fields */ | |
807 | dma_sync_single_for_cpu(lp->dev, (dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE); | |
808 | skb_reserve(skb, 2); | |
809 | memcpy(skb_put(skb,pkt_len), rbd->v_data, pkt_len); | |
810 | dma_sync_single_for_device(lp->dev, (dma_addr_t)WSWAPchar(rbd->b_data), PKT_BUF_SZ, DMA_FROM_DEVICE); | |
811 | } | |
812 | skb->len = pkt_len; | |
813 | skb->protocol=eth_type_trans(skb,dev); | |
814 | netif_rx(skb); | |
815 | dev->last_rx = jiffies; | |
816 | lp->stats.rx_packets++; | |
817 | lp->stats.rx_bytes+=pkt_len; | |
818 | } | |
819 | } | |
820 | else { | |
821 | DEB(DEB_ERRORS, printk("%s: Error, rfd.stat = 0x%04x\n", | |
822 | dev->name, rfd->stat)); | |
823 | lp->stats.rx_errors++; | |
824 | if ((rfd->stat) & 0x0001) | |
825 | lp->stats.collisions++; | |
826 | if ((rfd->stat) & 0x0080) | |
827 | lp->stats.rx_length_errors++; | |
828 | if ((rfd->stat) & 0x0100) | |
829 | lp->stats.rx_over_errors++; | |
830 | if ((rfd->stat) & 0x0200) | |
831 | lp->stats.rx_fifo_errors++; | |
832 | if ((rfd->stat) & 0x0400) | |
833 | lp->stats.rx_frame_errors++; | |
834 | if ((rfd->stat) & 0x0800) | |
835 | lp->stats.rx_crc_errors++; | |
836 | if ((rfd->stat) & 0x1000) | |
837 | lp->stats.rx_length_errors++; | |
838 | } | |
839 | ||
840 | /* Clear the buffer descriptor count and EOF + F flags */ | |
841 | ||
842 | if (rbd != NULL && (rbd->count & 0x4000)) { | |
843 | rbd->count = 0; | |
844 | lp->rbd_head = rbd->v_next; | |
845 | CHECK_WBACK_INV(rbd, sizeof(struct i596_rbd)); | |
846 | } | |
847 | ||
848 | /* Tidy the frame descriptor, marking it as end of list */ | |
849 | ||
850 | rfd->rbd = I596_NULL; | |
851 | rfd->stat = 0; | |
852 | rfd->cmd = CMD_EOL|CMD_FLEX; | |
853 | rfd->count = 0; | |
854 | ||
855 | /* Remove end-of-list from old end descriptor */ | |
856 | ||
857 | rfd->v_prev->cmd = CMD_FLEX; | |
858 | ||
859 | /* Update record of next frame descriptor to process */ | |
860 | ||
861 | lp->scb.rfd = rfd->b_next; | |
862 | lp->rfd_head = rfd->v_next; | |
863 | CHECK_WBACK_INV(rfd->v_prev, sizeof(struct i596_rfd)); | |
864 | CHECK_WBACK_INV(rfd, sizeof(struct i596_rfd)); | |
865 | rfd = lp->rfd_head; | |
866 | CHECK_INV(rfd, sizeof(struct i596_rfd)); | |
867 | } | |
868 | ||
869 | DEB(DEB_RXFRAME, printk("frames %d\n", frames)); | |
870 | ||
871 | return 0; | |
872 | } | |
873 | ||
874 | ||
875 | static inline void i596_cleanup_cmd(struct net_device *dev, struct i596_private *lp) | |
876 | { | |
877 | struct i596_cmd *ptr; | |
878 | ||
879 | while (lp->cmd_head != NULL) { | |
880 | ptr = lp->cmd_head; | |
881 | lp->cmd_head = ptr->v_next; | |
882 | lp->cmd_backlog--; | |
883 | ||
884 | switch ((ptr->command) & 0x7) { | |
885 | case CmdTx: | |
886 | { | |
887 | struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr; | |
888 | struct sk_buff *skb = tx_cmd->skb; | |
889 | dma_unmap_single(lp->dev, tx_cmd->dma_addr, skb->len, DMA_TO_DEVICE); | |
890 | ||
891 | dev_kfree_skb(skb); | |
892 | ||
893 | lp->stats.tx_errors++; | |
894 | lp->stats.tx_aborted_errors++; | |
895 | ||
896 | ptr->v_next = NULL; | |
897 | ptr->b_next = I596_NULL; | |
898 | tx_cmd->cmd.command = 0; /* Mark as free */ | |
899 | break; | |
900 | } | |
901 | default: | |
902 | ptr->v_next = NULL; | |
903 | ptr->b_next = I596_NULL; | |
904 | } | |
905 | CHECK_WBACK_INV(ptr, sizeof(struct i596_cmd)); | |
906 | } | |
907 | ||
908 | wait_cmd(dev, lp, 100, "i596_cleanup_cmd timed out"); | |
909 | lp->scb.cmd = I596_NULL; | |
910 | CHECK_WBACK(&(lp->scb), sizeof(struct i596_scb)); | |
911 | } | |
912 | ||
913 | ||
914 | static inline void i596_reset(struct net_device *dev, struct i596_private *lp) | |
915 | { | |
916 | unsigned long flags; | |
917 | ||
918 | DEB(DEB_RESET, printk("i596_reset\n")); | |
919 | ||
920 | spin_lock_irqsave (&lp->lock, flags); | |
921 | ||
922 | wait_cmd(dev, lp, 100, "i596_reset timed out"); | |
923 | ||
924 | netif_stop_queue(dev); | |
925 | ||
926 | /* FIXME: this command might cause an lpmc */ | |
927 | lp->scb.command = CUC_ABORT | RX_ABORT; | |
928 | CHECK_WBACK(&(lp->scb), sizeof(struct i596_scb)); | |
929 | CA(dev); | |
930 | ||
931 | /* wait for shutdown */ | |
932 | wait_cmd(dev, lp, 1000, "i596_reset 2 timed out"); | |
933 | spin_unlock_irqrestore (&lp->lock, flags); | |
934 | ||
935 | i596_cleanup_cmd(dev,lp); | |
936 | i596_rx(dev); | |
937 | ||
938 | netif_start_queue(dev); | |
939 | init_i596_mem(dev); | |
940 | } | |
941 | ||
942 | ||
943 | static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd) | |
944 | { | |
945 | struct i596_private *lp = dev->priv; | |
946 | unsigned long flags; | |
947 | ||
948 | DEB(DEB_ADDCMD, printk("i596_add_cmd cmd_head %p\n", lp->cmd_head)); | |
949 | ||
950 | cmd->status = 0; | |
951 | cmd->command |= (CMD_EOL | CMD_INTR); | |
952 | cmd->v_next = NULL; | |
953 | cmd->b_next = I596_NULL; | |
954 | CHECK_WBACK(cmd, sizeof(struct i596_cmd)); | |
955 | ||
956 | spin_lock_irqsave (&lp->lock, flags); | |
957 | ||
958 | if (lp->cmd_head != NULL) { | |
959 | lp->cmd_tail->v_next = cmd; | |
960 | lp->cmd_tail->b_next = WSWAPcmd(virt_to_dma(lp,&cmd->status)); | |
961 | CHECK_WBACK(lp->cmd_tail, sizeof(struct i596_cmd)); | |
962 | } else { | |
963 | lp->cmd_head = cmd; | |
964 | wait_cmd(dev, lp, 100, "i596_add_cmd timed out"); | |
965 | lp->scb.cmd = WSWAPcmd(virt_to_dma(lp,&cmd->status)); | |
966 | lp->scb.command = CUC_START; | |
967 | CHECK_WBACK(&(lp->scb), sizeof(struct i596_scb)); | |
968 | CA(dev); | |
969 | } | |
970 | lp->cmd_tail = cmd; | |
971 | lp->cmd_backlog++; | |
972 | ||
973 | spin_unlock_irqrestore (&lp->lock, flags); | |
974 | ||
975 | if (lp->cmd_backlog > max_cmd_backlog) { | |
976 | unsigned long tickssofar = jiffies - lp->last_cmd; | |
977 | ||
978 | if (tickssofar < ticks_limit) | |
979 | return; | |
980 | ||
981 | printk("%s: command unit timed out, status resetting.\n", dev->name); | |
982 | #if 1 | |
983 | i596_reset(dev, lp); | |
984 | #endif | |
985 | } | |
986 | } | |
987 | ||
988 | #if 0 | |
989 | /* this function makes a perfectly adequate probe... but we have a | |
990 | device list */ | |
991 | static int i596_test(struct net_device *dev) | |
992 | { | |
993 | struct i596_private *lp = dev->priv; | |
994 | volatile int *tint; | |
995 | u32 data; | |
996 | ||
997 | tint = (volatile int *)(&(lp->scp)); | |
998 | data = virt_to_dma(lp,tint); | |
6aa20a22 | 999 | |
1da177e4 LT |
1000 | tint[1] = -1; |
1001 | CHECK_WBACK(tint,PAGE_SIZE); | |
1002 | ||
1003 | MPU_PORT(dev, 1, data); | |
1004 | ||
1005 | for(data = 1000000; data; data--) { | |
1006 | CHECK_INV(tint,PAGE_SIZE); | |
1007 | if(tint[1] != -1) | |
1008 | break; | |
1009 | ||
1010 | } | |
1011 | ||
1012 | printk("i596_test result %d\n", tint[1]); | |
1013 | ||
1014 | } | |
1015 | #endif | |
1016 | ||
1017 | ||
1018 | static int i596_open(struct net_device *dev) | |
1019 | { | |
1020 | DEB(DEB_OPEN, printk("%s: i596_open() irq %d.\n", dev->name, dev->irq)); | |
1021 | ||
1022 | if (request_irq(dev->irq, &i596_interrupt, 0, "i82596", dev)) { | |
1023 | printk("%s: IRQ %d not free\n", dev->name, dev->irq); | |
1024 | goto out; | |
1025 | } | |
1026 | ||
1027 | init_rx_bufs(dev); | |
1028 | ||
1029 | if (init_i596_mem(dev)) { | |
1030 | printk("%s: Failed to init memory\n", dev->name); | |
1031 | goto out_remove_rx_bufs; | |
1032 | } | |
1033 | ||
1034 | netif_start_queue(dev); | |
1035 | ||
1036 | return 0; | |
1037 | ||
1038 | out_remove_rx_bufs: | |
1039 | remove_rx_bufs(dev); | |
1040 | free_irq(dev->irq, dev); | |
1041 | out: | |
1042 | return -EAGAIN; | |
1043 | } | |
1044 | ||
1045 | static void i596_tx_timeout (struct net_device *dev) | |
1046 | { | |
1047 | struct i596_private *lp = dev->priv; | |
1048 | ||
1049 | /* Transmitter timeout, serious problems. */ | |
1050 | DEB(DEB_ERRORS, printk("%s: transmit timed out, status resetting.\n", | |
1051 | dev->name)); | |
1052 | ||
1053 | lp->stats.tx_errors++; | |
1054 | ||
1055 | /* Try to restart the adaptor */ | |
1056 | if (lp->last_restart == lp->stats.tx_packets) { | |
1057 | DEB(DEB_ERRORS, printk("Resetting board.\n")); | |
1058 | /* Shutdown and restart */ | |
1059 | i596_reset (dev, lp); | |
1060 | } else { | |
1061 | /* Issue a channel attention signal */ | |
1062 | DEB(DEB_ERRORS, printk("Kicking board.\n")); | |
1063 | lp->scb.command = CUC_START | RX_START; | |
1064 | CHECK_WBACK_INV(&(lp->scb), sizeof(struct i596_scb)); | |
1065 | CA (dev); | |
1066 | lp->last_restart = lp->stats.tx_packets; | |
1067 | } | |
1068 | ||
1069 | dev->trans_start = jiffies; | |
1070 | netif_wake_queue (dev); | |
1071 | } | |
1072 | ||
1073 | ||
1074 | static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1075 | { | |
1076 | struct i596_private *lp = dev->priv; | |
1077 | struct tx_cmd *tx_cmd; | |
1078 | struct i596_tbd *tbd; | |
1079 | short length = skb->len; | |
1080 | dev->trans_start = jiffies; | |
1081 | ||
1082 | DEB(DEB_STARTTX, printk("%s: i596_start_xmit(%x,%p) called\n", dev->name, | |
1083 | skb->len, skb->data)); | |
1084 | ||
1085 | if (length < ETH_ZLEN) { | |
5b057c6b | 1086 | if (skb_padto(skb, ETH_ZLEN)) |
1da177e4 LT |
1087 | return 0; |
1088 | length = ETH_ZLEN; | |
1089 | } | |
6aa20a22 | 1090 | |
1da177e4 LT |
1091 | netif_stop_queue(dev); |
1092 | ||
1093 | tx_cmd = lp->tx_cmds + lp->next_tx_cmd; | |
1094 | tbd = lp->tbds + lp->next_tx_cmd; | |
1095 | ||
1096 | if (tx_cmd->cmd.command) { | |
1097 | DEB(DEB_ERRORS, printk("%s: xmit ring full, dropping packet.\n", | |
1098 | dev->name)); | |
1099 | lp->stats.tx_dropped++; | |
1100 | ||
1101 | dev_kfree_skb(skb); | |
1102 | } else { | |
1103 | if (++lp->next_tx_cmd == TX_RING_SIZE) | |
1104 | lp->next_tx_cmd = 0; | |
1105 | tx_cmd->tbd = WSWAPtbd(virt_to_dma(lp,tbd)); | |
1106 | tbd->next = I596_NULL; | |
1107 | ||
1108 | tx_cmd->cmd.command = CMD_FLEX | CmdTx; | |
1109 | tx_cmd->skb = skb; | |
1110 | ||
1111 | tx_cmd->pad = 0; | |
1112 | tx_cmd->size = 0; | |
1113 | tbd->pad = 0; | |
1114 | tbd->size = EOF | length; | |
1115 | ||
1116 | tx_cmd->dma_addr = dma_map_single(lp->dev, skb->data, skb->len, | |
1117 | DMA_TO_DEVICE); | |
1118 | tbd->data = WSWAPchar(tx_cmd->dma_addr); | |
1119 | ||
1120 | DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued")); | |
1121 | CHECK_WBACK_INV(tx_cmd, sizeof(struct tx_cmd)); | |
1122 | CHECK_WBACK_INV(tbd, sizeof(struct i596_tbd)); | |
1123 | i596_add_cmd(dev, &tx_cmd->cmd); | |
1124 | ||
1125 | lp->stats.tx_packets++; | |
1126 | lp->stats.tx_bytes += length; | |
1127 | } | |
1128 | ||
1129 | netif_start_queue(dev); | |
1130 | ||
1131 | return 0; | |
1132 | } | |
1133 | ||
1134 | static void print_eth(unsigned char *add, char *str) | |
1135 | { | |
1136 | int i; | |
1137 | ||
1138 | printk("i596 0x%p, ", add); | |
1139 | for (i = 0; i < 6; i++) | |
1140 | printk(" %02X", add[i + 6]); | |
1141 | printk(" -->"); | |
1142 | for (i = 0; i < 6; i++) | |
1143 | printk(" %02X", add[i]); | |
1144 | printk(" %02X%02X, %s\n", add[12], add[13], str); | |
1145 | } | |
1146 | ||
1147 | ||
1148 | #define LAN_PROM_ADDR 0xF0810000 | |
1149 | ||
1150 | static int __devinit i82596_probe(struct net_device *dev, | |
1151 | struct device *gen_dev) | |
1152 | { | |
1153 | int i; | |
1154 | struct i596_private *lp; | |
1155 | char eth_addr[6]; | |
1156 | dma_addr_t dma_addr; | |
1157 | ||
1158 | /* This lot is ensure things have been cache line aligned. */ | |
1159 | if (sizeof(struct i596_rfd) != 32) { | |
1160 | printk("82596: sizeof(struct i596_rfd) = %d\n", | |
1161 | (int)sizeof(struct i596_rfd)); | |
1162 | return -ENODEV; | |
1163 | } | |
1164 | if ((sizeof(struct i596_rbd) % 32) != 0) { | |
1165 | printk("82596: sizeof(struct i596_rbd) = %d\n", | |
1166 | (int)sizeof(struct i596_rbd)); | |
1167 | return -ENODEV; | |
1168 | } | |
1169 | if ((sizeof(struct tx_cmd) % 32) != 0) { | |
1170 | printk("82596: sizeof(struct tx_cmd) = %d\n", | |
1171 | (int)sizeof(struct tx_cmd)); | |
1172 | return -ENODEV; | |
1173 | } | |
1174 | if (sizeof(struct i596_tbd) != 32) { | |
1175 | printk("82596: sizeof(struct i596_tbd) = %d\n", | |
1176 | (int)sizeof(struct i596_tbd)); | |
1177 | return -ENODEV; | |
1178 | } | |
1179 | #ifndef __LP64__ | |
1180 | if (sizeof(struct i596_private) > 4096) { | |
1181 | printk("82596: sizeof(struct i596_private) = %d\n", | |
1182 | (int)sizeof(struct i596_private)); | |
1183 | return -ENODEV; | |
1184 | } | |
1185 | #endif | |
1186 | ||
1187 | if (!dev->base_addr || !dev->irq) | |
1188 | return -ENODEV; | |
1189 | ||
1190 | if (pdc_lan_station_id(eth_addr, dev->base_addr)) { | |
1191 | for (i=0; i < 6; i++) { | |
1192 | eth_addr[i] = gsc_readb(LAN_PROM_ADDR + i); | |
1193 | } | |
1194 | printk(KERN_INFO "%s: MAC of HP700 LAN read from EEPROM\n", __FILE__); | |
1195 | } | |
1196 | ||
6aa20a22 | 1197 | dev->mem_start = (unsigned long) dma_alloc_noncoherent(gen_dev, |
1da177e4 LT |
1198 | sizeof(struct i596_private), &dma_addr, GFP_KERNEL); |
1199 | if (!dev->mem_start) { | |
1200 | printk(KERN_ERR "%s: Couldn't get shared memory\n", __FILE__); | |
1201 | return -ENOMEM; | |
1202 | } | |
1203 | ||
1204 | for (i = 0; i < 6; i++) | |
1205 | dev->dev_addr[i] = eth_addr[i]; | |
1206 | ||
1207 | /* The 82596-specific entries in the device structure. */ | |
1208 | dev->open = i596_open; | |
1209 | dev->stop = i596_close; | |
1210 | dev->hard_start_xmit = i596_start_xmit; | |
1211 | dev->get_stats = i596_get_stats; | |
1212 | dev->set_multicast_list = set_multicast_list; | |
1213 | dev->tx_timeout = i596_tx_timeout; | |
1214 | dev->watchdog_timeo = TX_TIMEOUT; | |
c2709020 SS |
1215 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1216 | dev->poll_controller = i596_poll_controller; | |
1217 | #endif | |
1da177e4 LT |
1218 | |
1219 | dev->priv = (void *)(dev->mem_start); | |
1220 | ||
1221 | lp = dev->priv; | |
1222 | memset(lp, 0, sizeof(struct i596_private)); | |
1223 | ||
1224 | lp->scb.command = 0; | |
1225 | lp->scb.cmd = I596_NULL; | |
1226 | lp->scb.rfd = I596_NULL; | |
1227 | spin_lock_init(&lp->lock); | |
1228 | lp->dma_addr = dma_addr; | |
1229 | lp->dev = gen_dev; | |
1230 | ||
1231 | CHECK_WBACK_INV(dev->mem_start, sizeof(struct i596_private)); | |
1232 | ||
1233 | i = register_netdev(dev); | |
1234 | if (i) { | |
1235 | lp = dev->priv; | |
6aa20a22 | 1236 | dma_free_noncoherent(lp->dev, sizeof(struct i596_private), |
1da177e4 LT |
1237 | (void *)dev->mem_start, lp->dma_addr); |
1238 | return i; | |
1239 | }; | |
1240 | ||
1241 | DEB(DEB_PROBE, printk(KERN_INFO "%s: 82596 at %#3lx,", dev->name, dev->base_addr)); | |
1242 | for (i = 0; i < 6; i++) | |
1243 | DEB(DEB_PROBE, printk(" %2.2X", dev->dev_addr[i])); | |
1244 | DEB(DEB_PROBE, printk(" IRQ %d.\n", dev->irq)); | |
1245 | DEB(DEB_INIT, printk(KERN_INFO "%s: lp at 0x%p (%d bytes), lp->scb at 0x%p\n", | |
1246 | dev->name, lp, (int)sizeof(struct i596_private), &lp->scb)); | |
1247 | ||
1248 | return 0; | |
1249 | } | |
1250 | ||
c2709020 SS |
1251 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1252 | static void i596_poll_controller(struct net_device *dev) | |
1253 | { | |
1254 | disable_irq(dev->irq); | |
1255 | i596_interrupt(dev->irq, dev, NULL); | |
1256 | enable_irq(dev->irq); | |
1257 | } | |
1258 | #endif | |
1da177e4 LT |
1259 | |
1260 | static irqreturn_t i596_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
1261 | { | |
1262 | struct net_device *dev = dev_id; | |
1263 | struct i596_private *lp; | |
1264 | unsigned short status, ack_cmd = 0; | |
1265 | ||
1266 | if (dev == NULL) { | |
1267 | printk("%s: irq %d for unknown device.\n", __FUNCTION__, irq); | |
1268 | return IRQ_NONE; | |
1269 | } | |
1270 | ||
1271 | lp = dev->priv; | |
1272 | ||
1273 | spin_lock (&lp->lock); | |
1274 | ||
1275 | wait_cmd(dev, lp, 100, "i596 interrupt, timeout"); | |
1276 | status = lp->scb.status; | |
1277 | ||
1278 | DEB(DEB_INTS, printk("%s: i596 interrupt, IRQ %d, status %4.4x.\n", | |
1279 | dev->name, irq, status)); | |
1280 | ||
1281 | ack_cmd = status & 0xf000; | |
1282 | ||
1283 | if (!ack_cmd) { | |
1284 | DEB(DEB_ERRORS, printk("%s: interrupt with no events\n", dev->name)); | |
1285 | spin_unlock (&lp->lock); | |
1286 | return IRQ_NONE; | |
1287 | } | |
1288 | ||
1289 | if ((status & 0x8000) || (status & 0x2000)) { | |
1290 | struct i596_cmd *ptr; | |
1291 | ||
1292 | if ((status & 0x8000)) | |
1293 | DEB(DEB_INTS, printk("%s: i596 interrupt completed command.\n", dev->name)); | |
1294 | if ((status & 0x2000)) | |
1295 | DEB(DEB_INTS, printk("%s: i596 interrupt command unit inactive %x.\n", dev->name, status & 0x0700)); | |
1296 | ||
1297 | while (lp->cmd_head != NULL) { | |
1298 | CHECK_INV(lp->cmd_head, sizeof(struct i596_cmd)); | |
1299 | if (!(lp->cmd_head->status & STAT_C)) | |
1300 | break; | |
1301 | ||
1302 | ptr = lp->cmd_head; | |
1303 | ||
1304 | DEB(DEB_STATUS, printk("cmd_head->status = %04x, ->command = %04x\n", | |
1305 | lp->cmd_head->status, lp->cmd_head->command)); | |
1306 | lp->cmd_head = ptr->v_next; | |
1307 | lp->cmd_backlog--; | |
1308 | ||
1309 | switch ((ptr->command) & 0x7) { | |
1310 | case CmdTx: | |
1311 | { | |
1312 | struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr; | |
1313 | struct sk_buff *skb = tx_cmd->skb; | |
1314 | ||
1315 | if ((ptr->status) & STAT_OK) { | |
1316 | DEB(DEB_TXADDR, print_eth(skb->data, "tx-done")); | |
1317 | } else { | |
1318 | lp->stats.tx_errors++; | |
1319 | if ((ptr->status) & 0x0020) | |
1320 | lp->stats.collisions++; | |
1321 | if (!((ptr->status) & 0x0040)) | |
1322 | lp->stats.tx_heartbeat_errors++; | |
1323 | if ((ptr->status) & 0x0400) | |
1324 | lp->stats.tx_carrier_errors++; | |
1325 | if ((ptr->status) & 0x0800) | |
1326 | lp->stats.collisions++; | |
1327 | if ((ptr->status) & 0x1000) | |
1328 | lp->stats.tx_aborted_errors++; | |
1329 | } | |
1330 | dma_unmap_single(lp->dev, tx_cmd->dma_addr, skb->len, DMA_TO_DEVICE); | |
1331 | dev_kfree_skb_irq(skb); | |
1332 | ||
1333 | tx_cmd->cmd.command = 0; /* Mark free */ | |
1334 | break; | |
1335 | } | |
1336 | case CmdTDR: | |
1337 | { | |
1338 | unsigned short status = ((struct tdr_cmd *)ptr)->status; | |
1339 | ||
1340 | if (status & 0x8000) { | |
1341 | DEB(DEB_ANY, printk("%s: link ok.\n", dev->name)); | |
1342 | } else { | |
1343 | if (status & 0x4000) | |
1344 | printk("%s: Transceiver problem.\n", dev->name); | |
1345 | if (status & 0x2000) | |
1346 | printk("%s: Termination problem.\n", dev->name); | |
1347 | if (status & 0x1000) | |
1348 | printk("%s: Short circuit.\n", dev->name); | |
1349 | ||
1350 | DEB(DEB_TDR, printk("%s: Time %d.\n", dev->name, status & 0x07ff)); | |
1351 | } | |
1352 | break; | |
1353 | } | |
1354 | case CmdConfigure: | |
1355 | /* Zap command so set_multicast_list() knows it is free */ | |
1356 | ptr->command = 0; | |
1357 | break; | |
1358 | } | |
1359 | ptr->v_next = NULL; | |
1360 | ptr->b_next = I596_NULL; | |
1361 | CHECK_WBACK(ptr, sizeof(struct i596_cmd)); | |
1362 | lp->last_cmd = jiffies; | |
1363 | } | |
1364 | ||
1365 | /* This mess is arranging that only the last of any outstanding | |
1366 | * commands has the interrupt bit set. Should probably really | |
1367 | * only add to the cmd queue when the CU is stopped. | |
1368 | */ | |
1369 | ptr = lp->cmd_head; | |
1370 | while ((ptr != NULL) && (ptr != lp->cmd_tail)) { | |
1371 | struct i596_cmd *prev = ptr; | |
1372 | ||
1373 | ptr->command &= 0x1fff; | |
1374 | ptr = ptr->v_next; | |
1375 | CHECK_WBACK_INV(prev, sizeof(struct i596_cmd)); | |
1376 | } | |
1377 | ||
1378 | if ((lp->cmd_head != NULL)) | |
1379 | ack_cmd |= CUC_START; | |
1380 | lp->scb.cmd = WSWAPcmd(virt_to_dma(lp,&lp->cmd_head->status)); | |
1381 | CHECK_WBACK_INV(&lp->scb, sizeof(struct i596_scb)); | |
1382 | } | |
1383 | if ((status & 0x1000) || (status & 0x4000)) { | |
1384 | if ((status & 0x4000)) | |
1385 | DEB(DEB_INTS, printk("%s: i596 interrupt received a frame.\n", dev->name)); | |
1386 | i596_rx(dev); | |
1387 | /* Only RX_START if stopped - RGH 07-07-96 */ | |
1388 | if (status & 0x1000) { | |
1389 | if (netif_running(dev)) { | |
1390 | DEB(DEB_ERRORS, printk("%s: i596 interrupt receive unit inactive, status 0x%x\n", dev->name, status)); | |
1391 | ack_cmd |= RX_START; | |
1392 | lp->stats.rx_errors++; | |
1393 | lp->stats.rx_fifo_errors++; | |
1394 | rebuild_rx_bufs(dev); | |
1395 | } | |
1396 | } | |
1397 | } | |
1398 | wait_cmd(dev, lp, 100, "i596 interrupt, timeout"); | |
1399 | lp->scb.command = ack_cmd; | |
1400 | CHECK_WBACK(&lp->scb, sizeof(struct i596_scb)); | |
1401 | ||
1402 | /* DANGER: I suspect that some kind of interrupt | |
6aa20a22 | 1403 | acknowledgement aside from acking the 82596 might be needed |
1da177e4 LT |
1404 | here... but it's running acceptably without */ |
1405 | ||
1406 | CA(dev); | |
1407 | ||
1408 | wait_cmd(dev, lp, 100, "i596 interrupt, exit timeout"); | |
1409 | DEB(DEB_INTS, printk("%s: exiting interrupt.\n", dev->name)); | |
1410 | ||
1411 | spin_unlock (&lp->lock); | |
1412 | return IRQ_HANDLED; | |
1413 | } | |
1414 | ||
1415 | static int i596_close(struct net_device *dev) | |
1416 | { | |
1417 | struct i596_private *lp = dev->priv; | |
1418 | unsigned long flags; | |
1419 | ||
1420 | netif_stop_queue(dev); | |
1421 | ||
1422 | DEB(DEB_INIT, printk("%s: Shutting down ethercard, status was %4.4x.\n", | |
1423 | dev->name, lp->scb.status)); | |
1424 | ||
1425 | spin_lock_irqsave(&lp->lock, flags); | |
1426 | ||
1427 | wait_cmd(dev, lp, 100, "close1 timed out"); | |
1428 | lp->scb.command = CUC_ABORT | RX_ABORT; | |
1429 | CHECK_WBACK(&lp->scb, sizeof(struct i596_scb)); | |
1430 | ||
1431 | CA(dev); | |
1432 | ||
1433 | wait_cmd(dev, lp, 100, "close2 timed out"); | |
1434 | spin_unlock_irqrestore(&lp->lock, flags); | |
1435 | DEB(DEB_STRUCT,i596_display_data(dev)); | |
1436 | i596_cleanup_cmd(dev,lp); | |
1437 | ||
1438 | disable_irq(dev->irq); | |
1439 | ||
1440 | free_irq(dev->irq, dev); | |
1441 | remove_rx_bufs(dev); | |
1442 | ||
1443 | return 0; | |
1444 | } | |
1445 | ||
1446 | static struct net_device_stats * | |
1447 | i596_get_stats(struct net_device *dev) | |
1448 | { | |
1449 | struct i596_private *lp = dev->priv; | |
1450 | ||
1451 | return &lp->stats; | |
1452 | } | |
1453 | ||
1454 | /* | |
1455 | * Set or clear the multicast filter for this adaptor. | |
1456 | */ | |
1457 | ||
1458 | static void set_multicast_list(struct net_device *dev) | |
1459 | { | |
1460 | struct i596_private *lp = dev->priv; | |
1461 | int config = 0, cnt; | |
1462 | ||
1463 | DEB(DEB_MULTI, printk("%s: set multicast list, %d entries, promisc %s, allmulti %s\n", | |
1464 | dev->name, dev->mc_count, dev->flags & IFF_PROMISC ? "ON" : "OFF", | |
1465 | dev->flags & IFF_ALLMULTI ? "ON" : "OFF")); | |
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 | if (lp->cf_cmd.cmd.command) | |
1485 | printk("%s: config change request already queued\n", | |
1486 | dev->name); | |
1487 | else { | |
1488 | lp->cf_cmd.cmd.command = CmdConfigure; | |
1489 | CHECK_WBACK_INV(&lp->cf_cmd, sizeof(struct cf_cmd)); | |
1490 | i596_add_cmd(dev, &lp->cf_cmd.cmd); | |
1491 | } | |
1492 | } | |
1493 | ||
1494 | cnt = dev->mc_count; | |
1495 | if (cnt > MAX_MC_CNT) | |
1496 | { | |
1497 | cnt = MAX_MC_CNT; | |
1498 | printk("%s: Only %d multicast addresses supported", | |
1499 | dev->name, cnt); | |
1500 | } | |
6aa20a22 | 1501 | |
1da177e4 LT |
1502 | if (dev->mc_count > 0) { |
1503 | struct dev_mc_list *dmi; | |
1504 | unsigned char *cp; | |
1505 | struct mc_cmd *cmd; | |
1506 | ||
1507 | cmd = &lp->mc_cmd; | |
1508 | cmd->cmd.command = CmdMulticastList; | |
1509 | cmd->mc_cnt = dev->mc_count * 6; | |
1510 | cp = cmd->mc_addrs; | |
1511 | for (dmi = dev->mc_list; cnt && dmi != NULL; dmi = dmi->next, cnt--, cp += 6) { | |
1512 | memcpy(cp, dmi->dmi_addr, 6); | |
1513 | if (i596_debug > 1) | |
1514 | DEB(DEB_MULTI, printk("%s: Adding address %02x:%02x:%02x:%02x:%02x:%02x\n", | |
1515 | dev->name, cp[0],cp[1],cp[2],cp[3],cp[4],cp[5])); | |
1516 | } | |
1517 | CHECK_WBACK_INV(&lp->mc_cmd, sizeof(struct mc_cmd)); | |
1518 | i596_add_cmd(dev, &cmd->cmd); | |
1519 | } | |
1520 | } | |
1521 | ||
1da177e4 | 1522 | static int debug = -1; |
8d3b33f6 RR |
1523 | module_param(debug, int, 0); |
1524 | MODULE_PARM_DESC(debug, "lasi_82596 debug mask"); | |
1da177e4 LT |
1525 | |
1526 | static int num_drivers; | |
1527 | static struct net_device *netdevs[MAX_DRIVERS]; | |
1528 | ||
1529 | static int __devinit | |
1530 | lan_init_chip(struct parisc_device *dev) | |
1531 | { | |
1532 | struct net_device *netdevice; | |
1533 | int retval; | |
1534 | ||
1535 | if (num_drivers >= MAX_DRIVERS) { | |
1536 | /* max count of possible i82596 drivers reached */ | |
1537 | return -ENOMEM; | |
1538 | } | |
1539 | ||
1540 | if (num_drivers == 0) | |
1541 | printk(KERN_INFO LASI_82596_DRIVER_VERSION "\n"); | |
6aa20a22 | 1542 | |
1da177e4 LT |
1543 | if (!dev->irq) { |
1544 | printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n", | |
53f01bba | 1545 | __FILE__, dev->hpa.start); |
1da177e4 LT |
1546 | return -ENODEV; |
1547 | } | |
1548 | ||
53f01bba MW |
1549 | printk(KERN_INFO "Found i82596 at 0x%lx, IRQ %d\n", dev->hpa.start, |
1550 | dev->irq); | |
1da177e4 LT |
1551 | |
1552 | netdevice = alloc_etherdev(0); | |
1553 | if (!netdevice) | |
1554 | return -ENOMEM; | |
1555 | ||
53f01bba | 1556 | netdevice->base_addr = dev->hpa.start; |
1da177e4 LT |
1557 | netdevice->irq = dev->irq; |
1558 | ||
1559 | retval = i82596_probe(netdevice, &dev->dev); | |
1560 | if (retval) { | |
1561 | free_netdev(netdevice); | |
1562 | return -ENODEV; | |
1563 | } | |
1564 | ||
1565 | if (dev->id.sversion == 0x72) { | |
1566 | ((struct i596_private *)netdevice->priv)->options = OPT_SWAP_PORT; | |
1567 | } | |
1568 | ||
1569 | netdevs[num_drivers++] = netdevice; | |
1570 | ||
1571 | return retval; | |
1572 | } | |
1573 | ||
1574 | ||
1575 | static struct parisc_device_id lan_tbl[] = { | |
1576 | { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008a }, | |
1577 | { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00072 }, | |
1578 | { 0, } | |
1579 | }; | |
1580 | ||
1581 | MODULE_DEVICE_TABLE(parisc, lan_tbl); | |
1582 | ||
1583 | static struct parisc_driver lan_driver = { | |
bdad1f83 | 1584 | .name = "lasi_82596", |
1da177e4 LT |
1585 | .id_table = lan_tbl, |
1586 | .probe = lan_init_chip, | |
1587 | }; | |
1588 | ||
1589 | static int __devinit lasi_82596_init(void) | |
1590 | { | |
1591 | if (debug >= 0) | |
1592 | i596_debug = debug; | |
1593 | return register_parisc_driver(&lan_driver); | |
1594 | } | |
1595 | ||
1596 | module_init(lasi_82596_init); | |
1597 | ||
1598 | static void __exit lasi_82596_exit(void) | |
1599 | { | |
1600 | int i; | |
1601 | ||
1602 | for (i=0; i<MAX_DRIVERS; i++) { | |
1603 | struct i596_private *lp; | |
1604 | struct net_device *netdevice; | |
6aa20a22 | 1605 | |
1da177e4 | 1606 | netdevice = netdevs[i]; |
6aa20a22 | 1607 | if (!netdevice) |
1da177e4 | 1608 | continue; |
6aa20a22 | 1609 | |
1da177e4 LT |
1610 | unregister_netdev(netdevice); |
1611 | ||
1612 | lp = netdevice->priv; | |
6aa20a22 | 1613 | dma_free_noncoherent(lp->dev, sizeof(struct i596_private), |
1da177e4 LT |
1614 | (void *)netdevice->mem_start, lp->dma_addr); |
1615 | free_netdev(netdevice); | |
1616 | } | |
1617 | num_drivers = 0; | |
1618 | ||
1619 | unregister_parisc_driver(&lan_driver); | |
1620 | } | |
1621 | ||
1622 | module_exit(lasi_82596_exit); |