blob: d154dee76e7f5af7689cd9e644c3b111c859dd5b [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * cistpl.c -- 16-bit PCMCIA Card Information Structure parser
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * The initial developer of the original code is David A. Hinds
9 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
10 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
11 *
12 * (C) 1999 David A. Hinds
13 */
14
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/module.h>
16#include <linux/moduleparam.h>
17#include <linux/kernel.h>
18#include <linux/string.h>
19#include <linux/major.h>
20#include <linux/errno.h>
21#include <linux/timer.h>
22#include <linux/slab.h>
23#include <linux/mm.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <linux/pci.h>
25#include <linux/ioport.h>
26#include <asm/io.h>
27#include <asm/byteorder.h>
28
29#include <pcmcia/cs_types.h>
30#include <pcmcia/ss.h>
31#include <pcmcia/cs.h>
32#include <pcmcia/bulkmem.h>
33#include <pcmcia/cisreg.h>
34#include <pcmcia/cistpl.h>
35#include "cs_internal.h"
36
37static const u_char mantissa[] = {
38 10, 12, 13, 15, 20, 25, 30, 35,
39 40, 45, 50, 55, 60, 70, 80, 90
40};
41
42static const u_int exponent[] = {
43 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
44};
45
46/* Convert an extended speed byte to a time in nanoseconds */
47#define SPEED_CVT(v) \
48 (mantissa[(((v)>>3)&15)-1] * exponent[(v)&7] / 10)
49/* Convert a power byte to a current in 0.1 microamps */
50#define POWER_CVT(v) \
51 (mantissa[((v)>>3)&15] * exponent[(v)&7] / 10)
52#define POWER_SCALE(v) (exponent[(v)&7])
53
54/* Upper limit on reasonable # of tuples */
55#define MAX_TUPLES 200
56
57/*====================================================================*/
58
59/* Parameters that can be set with 'insmod' */
60
Pavel Machek37f77952005-09-07 16:00:26 -070061/* 16-bit CIS? */
62static int cis_width;
63module_param(cis_width, int, 0444);
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
65void release_cis_mem(struct pcmcia_socket *s)
66{
67 if (s->cis_mem.flags & MAP_ACTIVE) {
68 s->cis_mem.flags &= ~MAP_ACTIVE;
69 s->ops->set_mem_map(s, &s->cis_mem);
70 if (s->cis_mem.res) {
71 release_resource(s->cis_mem.res);
72 kfree(s->cis_mem.res);
73 s->cis_mem.res = NULL;
74 }
75 iounmap(s->cis_virt);
76 s->cis_virt = NULL;
77 }
78}
79EXPORT_SYMBOL(release_cis_mem);
80
81/*
82 * Map the card memory at "card_offset" into virtual space.
83 * If flags & MAP_ATTRIB, map the attribute space, otherwise
84 * map the memory space.
85 */
86static void __iomem *
87set_cis_map(struct pcmcia_socket *s, unsigned int card_offset, unsigned int flags)
88{
Dominik Brodowski2e5a3e72005-07-28 01:07:23 -070089 pccard_mem_map *mem = &s->cis_mem;
90 int ret;
Dominik Brodowski2ad0a0a2005-06-27 16:28:58 -070091
Dominik Brodowski2e5a3e72005-07-28 01:07:23 -070092 if (!(s->features & SS_CAP_STATIC_MAP) && (mem->res == NULL)) {
93 mem->res = pcmcia_find_mem_region(0, s->map_size, s->map_size, 0, s);
94 if (mem->res == NULL) {
95 printk(KERN_NOTICE "cs: unable to map card memory!\n");
96 return NULL;
97 }
98 s->cis_virt = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 }
Dominik Brodowski2ad0a0a2005-06-27 16:28:58 -0700100
Dominik Brodowski2e5a3e72005-07-28 01:07:23 -0700101 if (!(s->features & SS_CAP_STATIC_MAP) && (!s->cis_virt))
102 s->cis_virt = ioremap(mem->res->start, s->map_size);
103
104 mem->card_start = card_offset;
105 mem->flags = flags;
106
107 ret = s->ops->set_mem_map(s, mem);
108 if (ret) {
109 iounmap(s->cis_virt);
110 s->cis_virt = NULL;
111 return NULL;
112 }
113
114 if (s->features & SS_CAP_STATIC_MAP) {
115 if (s->cis_virt)
116 iounmap(s->cis_virt);
117 s->cis_virt = ioremap(mem->static_start, s->map_size);
118 }
119
120 return s->cis_virt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121}
122
123/*======================================================================
124
125 Low-level functions to read and write CIS memory. I think the
126 write routine is only useful for writing one-byte registers.
127
128======================================================================*/
129
130/* Bits in attr field */
131#define IS_ATTR 1
132#define IS_INDIRECT 8
133
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700134int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 u_int len, void *ptr)
136{
137 void __iomem *sys, *end;
138 unsigned char *buf = ptr;
139
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700140 cs_dbg(s, 3, "pcmcia_read_cis_mem(%d, %#x, %u)\n", attr, addr, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141
142 if (attr & IS_INDIRECT) {
143 /* Indirect accesses use a bunch of special registers at fixed
144 locations in common memory */
145 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
146 if (attr & IS_ATTR) {
147 addr *= 2;
148 flags = ICTRL0_AUTOINC;
149 }
150
151 sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
152 if (!sys) {
153 memset(ptr, 0xff, len);
154 return -1;
155 }
156
157 writeb(flags, sys+CISREG_ICTRL0);
158 writeb(addr & 0xff, sys+CISREG_IADDR0);
159 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
160 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
161 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
162 for ( ; len > 0; len--, buf++)
163 *buf = readb(sys+CISREG_IDATA0);
164 } else {
165 u_int inc = 1, card_offset, flags;
166
167 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
168 if (attr) {
169 flags |= MAP_ATTRIB;
170 inc++;
171 addr *= 2;
172 }
173
174 card_offset = addr & ~(s->map_size-1);
175 while (len) {
176 sys = set_cis_map(s, card_offset, flags);
177 if (!sys) {
178 memset(ptr, 0xff, len);
179 return -1;
180 }
181 end = sys + s->map_size;
182 sys = sys + (addr & (s->map_size-1));
183 for ( ; len > 0; len--, buf++, sys += inc) {
184 if (sys == end)
185 break;
186 *buf = readb(sys);
187 }
188 card_offset += s->map_size;
189 addr = 0;
190 }
191 }
192 cs_dbg(s, 3, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n",
193 *(u_char *)(ptr+0), *(u_char *)(ptr+1),
194 *(u_char *)(ptr+2), *(u_char *)(ptr+3));
195 return 0;
196}
Dominik Brodowski1a8d4662005-06-27 16:28:53 -0700197EXPORT_SYMBOL(pcmcia_read_cis_mem);
198
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700200void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 u_int len, void *ptr)
202{
203 void __iomem *sys, *end;
204 unsigned char *buf = ptr;
205
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700206 cs_dbg(s, 3, "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr, addr, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207
208 if (attr & IS_INDIRECT) {
209 /* Indirect accesses use a bunch of special registers at fixed
210 locations in common memory */
211 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
212 if (attr & IS_ATTR) {
213 addr *= 2;
214 flags = ICTRL0_AUTOINC;
215 }
216
217 sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
218 if (!sys)
219 return; /* FIXME: Error */
220
221 writeb(flags, sys+CISREG_ICTRL0);
222 writeb(addr & 0xff, sys+CISREG_IADDR0);
223 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
224 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
225 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
226 for ( ; len > 0; len--, buf++)
227 writeb(*buf, sys+CISREG_IDATA0);
228 } else {
229 u_int inc = 1, card_offset, flags;
230
231 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
232 if (attr & IS_ATTR) {
233 flags |= MAP_ATTRIB;
234 inc++;
235 addr *= 2;
236 }
237
238 card_offset = addr & ~(s->map_size-1);
239 while (len) {
240 sys = set_cis_map(s, card_offset, flags);
241 if (!sys)
242 return; /* FIXME: error */
243
244 end = sys + s->map_size;
245 sys = sys + (addr & (s->map_size-1));
246 for ( ; len > 0; len--, buf++, sys += inc) {
247 if (sys == end)
248 break;
249 writeb(*buf, sys);
250 }
251 card_offset += s->map_size;
252 addr = 0;
253 }
254 }
255}
Dominik Brodowski1a8d4662005-06-27 16:28:53 -0700256EXPORT_SYMBOL(pcmcia_write_cis_mem);
257
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258
259/*======================================================================
260
261 This is a wrapper around read_cis_mem, with the same interface,
262 but which caches information, for cards whose CIS may not be
263 readable all the time.
264
265======================================================================*/
266
267static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr,
268 u_int len, void *ptr)
269{
270 struct cis_cache_entry *cis;
271 int ret;
272
273 if (s->fake_cis) {
274 if (s->fake_cis_len > addr+len)
275 memcpy(ptr, s->fake_cis+addr, len);
276 else
277 memset(ptr, 0xff, len);
278 return;
279 }
280
281 list_for_each_entry(cis, &s->cis_cache, node) {
282 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
283 memcpy(ptr, cis->cache, len);
284 return;
285 }
286 }
287
288#ifdef CONFIG_CARDBUS
289 if (s->state & SOCKET_CARDBUS)
290 ret = read_cb_mem(s, attr, addr, len, ptr);
291 else
292#endif
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700293 ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294
295 if (ret == 0) {
296 /* Copy data into the cache */
297 cis = kmalloc(sizeof(struct cis_cache_entry) + len, GFP_KERNEL);
298 if (cis) {
299 cis->addr = addr;
300 cis->len = len;
301 cis->attr = attr;
302 memcpy(cis->cache, ptr, len);
303 list_add(&cis->node, &s->cis_cache);
304 }
305 }
306}
307
308static void
309remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len)
310{
311 struct cis_cache_entry *cis;
312
313 list_for_each_entry(cis, &s->cis_cache, node)
314 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
315 list_del(&cis->node);
316 kfree(cis);
317 break;
318 }
319}
320
321void destroy_cis_cache(struct pcmcia_socket *s)
322{
323 struct list_head *l, *n;
324
325 list_for_each_safe(l, n, &s->cis_cache) {
326 struct cis_cache_entry *cis = list_entry(l, struct cis_cache_entry, node);
327
328 list_del(&cis->node);
329 kfree(cis);
330 }
331
332 /*
333 * If there was a fake CIS, destroy that as well.
334 */
Jesper Juhl6044ec82005-11-07 01:01:32 -0800335 kfree(s->fake_cis);
336 s->fake_cis = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337}
338EXPORT_SYMBOL(destroy_cis_cache);
339
340/*======================================================================
341
342 This verifies if the CIS of a card matches what is in the CIS
343 cache.
344
345======================================================================*/
346
347int verify_cis_cache(struct pcmcia_socket *s)
348{
349 struct cis_cache_entry *cis;
350 char *buf;
351
352 buf = kmalloc(256, GFP_KERNEL);
353 if (buf == NULL)
354 return -1;
355 list_for_each_entry(cis, &s->cis_cache, node) {
356 int len = cis->len;
357
358 if (len > 256)
359 len = 256;
360#ifdef CONFIG_CARDBUS
361 if (s->state & SOCKET_CARDBUS)
362 read_cb_mem(s, cis->attr, cis->addr, len, buf);
363 else
364#endif
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700365 pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366
367 if (memcmp(buf, cis->cache, len) != 0) {
368 kfree(buf);
369 return -1;
370 }
371 }
372 kfree(buf);
373 return 0;
374}
375
376/*======================================================================
377
378 For really bad cards, we provide a facility for uploading a
379 replacement CIS.
380
381======================================================================*/
382
383int pcmcia_replace_cis(struct pcmcia_socket *s, cisdump_t *cis)
384{
Jesper Juhl6044ec82005-11-07 01:01:32 -0800385 kfree(s->fake_cis);
386 s->fake_cis = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 if (cis->Length > CISTPL_MAX_CIS_SIZE)
388 return CS_BAD_SIZE;
389 s->fake_cis = kmalloc(cis->Length, GFP_KERNEL);
390 if (s->fake_cis == NULL)
391 return CS_OUT_OF_RESOURCE;
392 s->fake_cis_len = cis->Length;
393 memcpy(s->fake_cis, cis->Data, cis->Length);
394 return CS_SUCCESS;
395}
Dominik Brodowski33519dd2005-06-27 16:28:53 -0700396EXPORT_SYMBOL(pcmcia_replace_cis);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397
398/*======================================================================
399
400 The high-level CIS tuple services
401
402======================================================================*/
403
404typedef struct tuple_flags {
405 u_int link_space:4;
406 u_int has_link:1;
407 u_int mfc_fn:3;
408 u_int space:4;
409} tuple_flags;
410
411#define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
412#define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
413#define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
414#define SPACE(f) (((tuple_flags *)(&(f)))->space)
415
416int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int func, tuple_t *tuple);
417
418int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
419{
420 if (!s)
421 return CS_BAD_HANDLE;
422 if (!(s->state & SOCKET_PRESENT))
423 return CS_NO_CARD;
424 tuple->TupleLink = tuple->Flags = 0;
425#ifdef CONFIG_CARDBUS
426 if (s->state & SOCKET_CARDBUS) {
427 struct pci_dev *dev = s->cb_dev;
428 u_int ptr;
429 pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr);
430 tuple->CISOffset = ptr & ~7;
431 SPACE(tuple->Flags) = (ptr & 7);
432 } else
433#endif
434 {
435 /* Assume presence of a LONGLINK_C to address 0 */
436 tuple->CISOffset = tuple->LinkOffset = 0;
437 SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
438 }
439 if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) &&
440 !(tuple->Attributes & TUPLE_RETURN_COMMON)) {
441 cisdata_t req = tuple->DesiredTuple;
442 tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
443 if (pccard_get_next_tuple(s, function, tuple) == CS_SUCCESS) {
444 tuple->DesiredTuple = CISTPL_LINKTARGET;
445 if (pccard_get_next_tuple(s, function, tuple) != CS_SUCCESS)
446 return CS_NO_MORE_ITEMS;
447 } else
448 tuple->CISOffset = tuple->TupleLink = 0;
449 tuple->DesiredTuple = req;
450 }
451 return pccard_get_next_tuple(s, function, tuple);
452}
453EXPORT_SYMBOL(pccard_get_first_tuple);
454
455static int follow_link(struct pcmcia_socket *s, tuple_t *tuple)
456{
457 u_char link[5];
458 u_int ofs;
459
460 if (MFC_FN(tuple->Flags)) {
461 /* Get indirect link from the MFC tuple */
462 read_cis_cache(s, LINK_SPACE(tuple->Flags),
463 tuple->LinkOffset, 5, link);
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +0300464 ofs = le32_to_cpu(*(__le32 *)(link+1));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR);
466 /* Move to the next indirect link */
467 tuple->LinkOffset += 5;
468 MFC_FN(tuple->Flags)--;
469 } else if (HAS_LINK(tuple->Flags)) {
470 ofs = tuple->LinkOffset;
471 SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags);
472 HAS_LINK(tuple->Flags) = 0;
473 } else {
474 return -1;
475 }
476 if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) {
477 /* This is ugly, but a common CIS error is to code the long
478 link offset incorrectly, so we check the right spot... */
479 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
480 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
481 (strncmp(link+2, "CIS", 3) == 0))
482 return ofs;
483 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
484 /* Then, we try the wrong spot... */
485 ofs = ofs >> 1;
486 }
487 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
488 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
489 (strncmp(link+2, "CIS", 3) == 0))
490 return ofs;
491 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
492 return -1;
493}
494
495int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
496{
497 u_char link[2], tmp;
498 int ofs, i, attr;
499
500 if (!s)
501 return CS_BAD_HANDLE;
502 if (!(s->state & SOCKET_PRESENT))
503 return CS_NO_CARD;
504
505 link[1] = tuple->TupleLink;
506 ofs = tuple->CISOffset + tuple->TupleLink;
507 attr = SPACE(tuple->Flags);
508
509 for (i = 0; i < MAX_TUPLES; i++) {
510 if (link[1] == 0xff) {
511 link[0] = CISTPL_END;
512 } else {
513 read_cis_cache(s, attr, ofs, 2, link);
514 if (link[0] == CISTPL_NULL) {
515 ofs++; continue;
516 }
517 }
518
519 /* End of chain? Follow long link if possible */
520 if (link[0] == CISTPL_END) {
521 if ((ofs = follow_link(s, tuple)) < 0)
522 return CS_NO_MORE_ITEMS;
523 attr = SPACE(tuple->Flags);
524 read_cis_cache(s, attr, ofs, 2, link);
525 }
526
527 /* Is this a link tuple? Make a note of it */
528 if ((link[0] == CISTPL_LONGLINK_A) ||
529 (link[0] == CISTPL_LONGLINK_C) ||
530 (link[0] == CISTPL_LONGLINK_MFC) ||
531 (link[0] == CISTPL_LINKTARGET) ||
532 (link[0] == CISTPL_INDIRECT) ||
533 (link[0] == CISTPL_NO_LINK)) {
534 switch (link[0]) {
535 case CISTPL_LONGLINK_A:
536 HAS_LINK(tuple->Flags) = 1;
537 LINK_SPACE(tuple->Flags) = attr | IS_ATTR;
538 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
539 break;
540 case CISTPL_LONGLINK_C:
541 HAS_LINK(tuple->Flags) = 1;
542 LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR;
543 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
544 break;
545 case CISTPL_INDIRECT:
546 HAS_LINK(tuple->Flags) = 1;
547 LINK_SPACE(tuple->Flags) = IS_ATTR | IS_INDIRECT;
548 tuple->LinkOffset = 0;
549 break;
550 case CISTPL_LONGLINK_MFC:
551 tuple->LinkOffset = ofs + 3;
552 LINK_SPACE(tuple->Flags) = attr;
553 if (function == BIND_FN_ALL) {
554 /* Follow all the MFC links */
555 read_cis_cache(s, attr, ofs+2, 1, &tmp);
556 MFC_FN(tuple->Flags) = tmp;
557 } else {
558 /* Follow exactly one of the links */
559 MFC_FN(tuple->Flags) = 1;
560 tuple->LinkOffset += function * 5;
561 }
562 break;
563 case CISTPL_NO_LINK:
564 HAS_LINK(tuple->Flags) = 0;
565 break;
566 }
567 if ((tuple->Attributes & TUPLE_RETURN_LINK) &&
568 (tuple->DesiredTuple == RETURN_FIRST_TUPLE))
569 break;
570 } else
571 if (tuple->DesiredTuple == RETURN_FIRST_TUPLE)
572 break;
573
574 if (link[0] == tuple->DesiredTuple)
575 break;
576 ofs += link[1] + 2;
577 }
578 if (i == MAX_TUPLES) {
579 cs_dbg(s, 1, "cs: overrun in pcmcia_get_next_tuple\n");
580 return CS_NO_MORE_ITEMS;
581 }
582
583 tuple->TupleCode = link[0];
584 tuple->TupleLink = link[1];
585 tuple->CISOffset = ofs + 2;
586 return CS_SUCCESS;
587}
588EXPORT_SYMBOL(pccard_get_next_tuple);
589
590/*====================================================================*/
591
592#define _MIN(a, b) (((a) < (b)) ? (a) : (b))
593
594int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple)
595{
596 u_int len;
597
598 if (!s)
599 return CS_BAD_HANDLE;
600
601 if (tuple->TupleLink < tuple->TupleOffset)
602 return CS_NO_MORE_ITEMS;
603 len = tuple->TupleLink - tuple->TupleOffset;
604 tuple->TupleDataLen = tuple->TupleLink;
605 if (len == 0)
606 return CS_SUCCESS;
607 read_cis_cache(s, SPACE(tuple->Flags),
608 tuple->CISOffset + tuple->TupleOffset,
609 _MIN(len, tuple->TupleDataMax), tuple->TupleData);
610 return CS_SUCCESS;
611}
612EXPORT_SYMBOL(pccard_get_tuple_data);
613
614
615/*======================================================================
616
617 Parsing routines for individual tuples
618
619======================================================================*/
620
621static int parse_device(tuple_t *tuple, cistpl_device_t *device)
622{
623 int i;
624 u_char scale;
625 u_char *p, *q;
626
627 p = (u_char *)tuple->TupleData;
628 q = p + tuple->TupleDataLen;
629
630 device->ndev = 0;
631 for (i = 0; i < CISTPL_MAX_DEVICES; i++) {
632
633 if (*p == 0xff) break;
634 device->dev[i].type = (*p >> 4);
635 device->dev[i].wp = (*p & 0x08) ? 1 : 0;
636 switch (*p & 0x07) {
637 case 0: device->dev[i].speed = 0; break;
638 case 1: device->dev[i].speed = 250; break;
639 case 2: device->dev[i].speed = 200; break;
640 case 3: device->dev[i].speed = 150; break;
641 case 4: device->dev[i].speed = 100; break;
642 case 7:
643 if (++p == q) return CS_BAD_TUPLE;
644 device->dev[i].speed = SPEED_CVT(*p);
645 while (*p & 0x80)
646 if (++p == q) return CS_BAD_TUPLE;
647 break;
648 default:
649 return CS_BAD_TUPLE;
650 }
651
652 if (++p == q) return CS_BAD_TUPLE;
653 if (*p == 0xff) break;
654 scale = *p & 7;
655 if (scale == 7) return CS_BAD_TUPLE;
656 device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2));
657 device->ndev++;
658 if (++p == q) break;
659 }
660
661 return CS_SUCCESS;
662}
663
664/*====================================================================*/
665
666static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum)
667{
668 u_char *p;
669 if (tuple->TupleDataLen < 5)
670 return CS_BAD_TUPLE;
671 p = (u_char *)tuple->TupleData;
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +0300672 csum->addr = tuple->CISOffset+(short)le16_to_cpu(*(__le16 *)p)-2;
673 csum->len = le16_to_cpu(*(__le16 *)(p + 2));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 csum->sum = *(p+4);
675 return CS_SUCCESS;
676}
677
678/*====================================================================*/
679
680static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link)
681{
682 if (tuple->TupleDataLen < 4)
683 return CS_BAD_TUPLE;
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +0300684 link->addr = le32_to_cpu(*(__le32 *)tuple->TupleData);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 return CS_SUCCESS;
686}
687
688/*====================================================================*/
689
690static int parse_longlink_mfc(tuple_t *tuple,
691 cistpl_longlink_mfc_t *link)
692{
693 u_char *p;
694 int i;
695
696 p = (u_char *)tuple->TupleData;
697
698 link->nfn = *p; p++;
699 if (tuple->TupleDataLen <= link->nfn*5)
700 return CS_BAD_TUPLE;
701 for (i = 0; i < link->nfn; i++) {
702 link->fn[i].space = *p; p++;
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +0300703 link->fn[i].addr = le32_to_cpu(*(__le32 *)p); p += 4;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704 }
705 return CS_SUCCESS;
706}
707
708/*====================================================================*/
709
710static int parse_strings(u_char *p, u_char *q, int max,
711 char *s, u_char *ofs, u_char *found)
712{
713 int i, j, ns;
714
715 if (p == q) return CS_BAD_TUPLE;
716 ns = 0; j = 0;
717 for (i = 0; i < max; i++) {
718 if (*p == 0xff) break;
719 ofs[i] = j;
720 ns++;
721 for (;;) {
722 s[j++] = (*p == 0xff) ? '\0' : *p;
723 if ((*p == '\0') || (*p == 0xff)) break;
724 if (++p == q) return CS_BAD_TUPLE;
725 }
726 if ((*p == 0xff) || (++p == q)) break;
727 }
728 if (found) {
729 *found = ns;
730 return CS_SUCCESS;
731 } else {
732 return (ns == max) ? CS_SUCCESS : CS_BAD_TUPLE;
733 }
734}
735
736/*====================================================================*/
737
738static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1)
739{
740 u_char *p, *q;
741
742 p = (u_char *)tuple->TupleData;
743 q = p + tuple->TupleDataLen;
744
745 vers_1->major = *p; p++;
746 vers_1->minor = *p; p++;
747 if (p >= q) return CS_BAD_TUPLE;
748
749 return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS,
750 vers_1->str, vers_1->ofs, &vers_1->ns);
751}
752
753/*====================================================================*/
754
755static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr)
756{
757 u_char *p, *q;
758
759 p = (u_char *)tuple->TupleData;
760 q = p + tuple->TupleDataLen;
761
762 return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS,
763 altstr->str, altstr->ofs, &altstr->ns);
764}
765
766/*====================================================================*/
767
768static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec)
769{
770 u_char *p, *q;
771 int nid;
772
773 p = (u_char *)tuple->TupleData;
774 q = p + tuple->TupleDataLen;
775
776 for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) {
777 if (p > q-2) break;
778 jedec->id[nid].mfr = p[0];
779 jedec->id[nid].info = p[1];
780 p += 2;
781 }
782 jedec->nid = nid;
783 return CS_SUCCESS;
784}
785
786/*====================================================================*/
787
788static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m)
789{
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +0300790 __le16 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791 if (tuple->TupleDataLen < 4)
792 return CS_BAD_TUPLE;
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +0300793 p = (__le16 *)tuple->TupleData;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794 m->manf = le16_to_cpu(p[0]);
795 m->card = le16_to_cpu(p[1]);
796 return CS_SUCCESS;
797}
798
799/*====================================================================*/
800
801static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f)
802{
803 u_char *p;
804 if (tuple->TupleDataLen < 2)
805 return CS_BAD_TUPLE;
806 p = (u_char *)tuple->TupleData;
807 f->func = p[0];
808 f->sysinit = p[1];
809 return CS_SUCCESS;
810}
811
812/*====================================================================*/
813
814static int parse_funce(tuple_t *tuple, cistpl_funce_t *f)
815{
816 u_char *p;
817 int i;
818 if (tuple->TupleDataLen < 1)
819 return CS_BAD_TUPLE;
820 p = (u_char *)tuple->TupleData;
821 f->type = p[0];
822 for (i = 1; i < tuple->TupleDataLen; i++)
823 f->data[i-1] = p[i];
824 return CS_SUCCESS;
825}
826
827/*====================================================================*/
828
829static int parse_config(tuple_t *tuple, cistpl_config_t *config)
830{
831 int rasz, rmsz, i;
832 u_char *p;
833
834 p = (u_char *)tuple->TupleData;
835 rasz = *p & 0x03;
836 rmsz = (*p & 0x3c) >> 2;
837 if (tuple->TupleDataLen < rasz+rmsz+4)
838 return CS_BAD_TUPLE;
839 config->last_idx = *(++p);
840 p++;
841 config->base = 0;
842 for (i = 0; i <= rasz; i++)
843 config->base += p[i] << (8*i);
844 p += rasz+1;
845 for (i = 0; i < 4; i++)
846 config->rmask[i] = 0;
847 for (i = 0; i <= rmsz; i++)
848 config->rmask[i>>2] += p[i] << (8*(i%4));
849 config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4);
850 return CS_SUCCESS;
851}
852
853/*======================================================================
854
855 The following routines are all used to parse the nightmarish
856 config table entries.
857
858======================================================================*/
859
860static u_char *parse_power(u_char *p, u_char *q,
861 cistpl_power_t *pwr)
862{
863 int i;
864 u_int scale;
865
866 if (p == q) return NULL;
867 pwr->present = *p;
868 pwr->flags = 0;
869 p++;
870 for (i = 0; i < 7; i++)
871 if (pwr->present & (1<<i)) {
872 if (p == q) return NULL;
873 pwr->param[i] = POWER_CVT(*p);
874 scale = POWER_SCALE(*p);
875 while (*p & 0x80) {
876 if (++p == q) return NULL;
877 if ((*p & 0x7f) < 100)
878 pwr->param[i] += (*p & 0x7f) * scale / 100;
879 else if (*p == 0x7d)
880 pwr->flags |= CISTPL_POWER_HIGHZ_OK;
881 else if (*p == 0x7e)
882 pwr->param[i] = 0;
883 else if (*p == 0x7f)
884 pwr->flags |= CISTPL_POWER_HIGHZ_REQ;
885 else
886 return NULL;
887 }
888 p++;
889 }
890 return p;
891}
892
893/*====================================================================*/
894
895static u_char *parse_timing(u_char *p, u_char *q,
896 cistpl_timing_t *timing)
897{
898 u_char scale;
899
900 if (p == q) return NULL;
901 scale = *p;
902 if ((scale & 3) != 3) {
903 if (++p == q) return NULL;
904 timing->wait = SPEED_CVT(*p);
905 timing->waitscale = exponent[scale & 3];
906 } else
907 timing->wait = 0;
908 scale >>= 2;
909 if ((scale & 7) != 7) {
910 if (++p == q) return NULL;
911 timing->ready = SPEED_CVT(*p);
912 timing->rdyscale = exponent[scale & 7];
913 } else
914 timing->ready = 0;
915 scale >>= 3;
916 if (scale != 7) {
917 if (++p == q) return NULL;
918 timing->reserved = SPEED_CVT(*p);
919 timing->rsvscale = exponent[scale];
920 } else
921 timing->reserved = 0;
922 p++;
923 return p;
924}
925
926/*====================================================================*/
927
928static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io)
929{
930 int i, j, bsz, lsz;
931
932 if (p == q) return NULL;
933 io->flags = *p;
934
935 if (!(*p & 0x80)) {
936 io->nwin = 1;
937 io->win[0].base = 0;
938 io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK));
939 return p+1;
940 }
941
942 if (++p == q) return NULL;
943 io->nwin = (*p & 0x0f) + 1;
944 bsz = (*p & 0x30) >> 4;
945 if (bsz == 3) bsz++;
946 lsz = (*p & 0xc0) >> 6;
947 if (lsz == 3) lsz++;
948 p++;
949
950 for (i = 0; i < io->nwin; i++) {
951 io->win[i].base = 0;
952 io->win[i].len = 1;
953 for (j = 0; j < bsz; j++, p++) {
954 if (p == q) return NULL;
955 io->win[i].base += *p << (j*8);
956 }
957 for (j = 0; j < lsz; j++, p++) {
958 if (p == q) return NULL;
959 io->win[i].len += *p << (j*8);
960 }
961 }
962 return p;
963}
964
965/*====================================================================*/
966
967static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem)
968{
969 int i, j, asz, lsz, has_ha;
970 u_int len, ca, ha;
971
972 if (p == q) return NULL;
973
974 mem->nwin = (*p & 0x07) + 1;
975 lsz = (*p & 0x18) >> 3;
976 asz = (*p & 0x60) >> 5;
977 has_ha = (*p & 0x80);
978 if (++p == q) return NULL;
979
980 for (i = 0; i < mem->nwin; i++) {
981 len = ca = ha = 0;
982 for (j = 0; j < lsz; j++, p++) {
983 if (p == q) return NULL;
984 len += *p << (j*8);
985 }
986 for (j = 0; j < asz; j++, p++) {
987 if (p == q) return NULL;
988 ca += *p << (j*8);
989 }
990 if (has_ha)
991 for (j = 0; j < asz; j++, p++) {
992 if (p == q) return NULL;
993 ha += *p << (j*8);
994 }
995 mem->win[i].len = len << 8;
996 mem->win[i].card_addr = ca << 8;
997 mem->win[i].host_addr = ha << 8;
998 }
999 return p;
1000}
1001
1002/*====================================================================*/
1003
1004static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq)
1005{
1006 if (p == q) return NULL;
1007 irq->IRQInfo1 = *p; p++;
1008 if (irq->IRQInfo1 & IRQ_INFO2_VALID) {
1009 if (p+2 > q) return NULL;
1010 irq->IRQInfo2 = (p[1]<<8) + p[0];
1011 p += 2;
1012 }
1013 return p;
1014}
1015
1016/*====================================================================*/
1017
1018static int parse_cftable_entry(tuple_t *tuple,
1019 cistpl_cftable_entry_t *entry)
1020{
1021 u_char *p, *q, features;
1022
1023 p = tuple->TupleData;
1024 q = p + tuple->TupleDataLen;
1025 entry->index = *p & 0x3f;
1026 entry->flags = 0;
1027 if (*p & 0x40)
1028 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1029 if (*p & 0x80) {
1030 if (++p == q) return CS_BAD_TUPLE;
1031 if (*p & 0x10)
1032 entry->flags |= CISTPL_CFTABLE_BVDS;
1033 if (*p & 0x20)
1034 entry->flags |= CISTPL_CFTABLE_WP;
1035 if (*p & 0x40)
1036 entry->flags |= CISTPL_CFTABLE_RDYBSY;
1037 if (*p & 0x80)
1038 entry->flags |= CISTPL_CFTABLE_MWAIT;
1039 entry->interface = *p & 0x0f;
1040 } else
1041 entry->interface = 0;
1042
1043 /* Process optional features */
1044 if (++p == q) return CS_BAD_TUPLE;
1045 features = *p; p++;
1046
1047 /* Power options */
1048 if ((features & 3) > 0) {
1049 p = parse_power(p, q, &entry->vcc);
1050 if (p == NULL) return CS_BAD_TUPLE;
1051 } else
1052 entry->vcc.present = 0;
1053 if ((features & 3) > 1) {
1054 p = parse_power(p, q, &entry->vpp1);
1055 if (p == NULL) return CS_BAD_TUPLE;
1056 } else
1057 entry->vpp1.present = 0;
1058 if ((features & 3) > 2) {
1059 p = parse_power(p, q, &entry->vpp2);
1060 if (p == NULL) return CS_BAD_TUPLE;
1061 } else
1062 entry->vpp2.present = 0;
1063
1064 /* Timing options */
1065 if (features & 0x04) {
1066 p = parse_timing(p, q, &entry->timing);
1067 if (p == NULL) return CS_BAD_TUPLE;
1068 } else {
1069 entry->timing.wait = 0;
1070 entry->timing.ready = 0;
1071 entry->timing.reserved = 0;
1072 }
1073
1074 /* I/O window options */
1075 if (features & 0x08) {
1076 p = parse_io(p, q, &entry->io);
1077 if (p == NULL) return CS_BAD_TUPLE;
1078 } else
1079 entry->io.nwin = 0;
1080
1081 /* Interrupt options */
1082 if (features & 0x10) {
1083 p = parse_irq(p, q, &entry->irq);
1084 if (p == NULL) return CS_BAD_TUPLE;
1085 } else
1086 entry->irq.IRQInfo1 = 0;
1087
1088 switch (features & 0x60) {
1089 case 0x00:
1090 entry->mem.nwin = 0;
1091 break;
1092 case 0x20:
1093 entry->mem.nwin = 1;
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +03001094 entry->mem.win[0].len = le16_to_cpu(*(__le16 *)p) << 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095 entry->mem.win[0].card_addr = 0;
1096 entry->mem.win[0].host_addr = 0;
1097 p += 2;
1098 if (p > q) return CS_BAD_TUPLE;
1099 break;
1100 case 0x40:
1101 entry->mem.nwin = 1;
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +03001102 entry->mem.win[0].len = le16_to_cpu(*(__le16 *)p) << 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103 entry->mem.win[0].card_addr =
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +03001104 le16_to_cpu(*(__le16 *)(p+2)) << 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105 entry->mem.win[0].host_addr = 0;
1106 p += 4;
1107 if (p > q) return CS_BAD_TUPLE;
1108 break;
1109 case 0x60:
1110 p = parse_mem(p, q, &entry->mem);
1111 if (p == NULL) return CS_BAD_TUPLE;
1112 break;
1113 }
1114
1115 /* Misc features */
1116 if (features & 0x80) {
1117 if (p == q) return CS_BAD_TUPLE;
1118 entry->flags |= (*p << 8);
1119 while (*p & 0x80)
1120 if (++p == q) return CS_BAD_TUPLE;
1121 p++;
1122 }
1123
1124 entry->subtuples = q-p;
1125
1126 return CS_SUCCESS;
1127}
1128
1129/*====================================================================*/
1130
1131#ifdef CONFIG_CARDBUS
1132
1133static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar)
1134{
1135 u_char *p;
1136 if (tuple->TupleDataLen < 6)
1137 return CS_BAD_TUPLE;
1138 p = (u_char *)tuple->TupleData;
1139 bar->attr = *p;
1140 p += 2;
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +03001141 bar->size = le32_to_cpu(*(__le32 *)p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142 return CS_SUCCESS;
1143}
1144
1145static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config)
1146{
1147 u_char *p;
1148
1149 p = (u_char *)tuple->TupleData;
1150 if ((*p != 3) || (tuple->TupleDataLen < 6))
1151 return CS_BAD_TUPLE;
1152 config->last_idx = *(++p);
1153 p++;
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +03001154 config->base = le32_to_cpu(*(__le32 *)p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001155 config->subtuples = tuple->TupleDataLen - 6;
1156 return CS_SUCCESS;
1157}
1158
1159static int parse_cftable_entry_cb(tuple_t *tuple,
1160 cistpl_cftable_entry_cb_t *entry)
1161{
1162 u_char *p, *q, features;
1163
1164 p = tuple->TupleData;
1165 q = p + tuple->TupleDataLen;
1166 entry->index = *p & 0x3f;
1167 entry->flags = 0;
1168 if (*p & 0x40)
1169 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1170
1171 /* Process optional features */
1172 if (++p == q) return CS_BAD_TUPLE;
1173 features = *p; p++;
1174
1175 /* Power options */
1176 if ((features & 3) > 0) {
1177 p = parse_power(p, q, &entry->vcc);
1178 if (p == NULL) return CS_BAD_TUPLE;
1179 } else
1180 entry->vcc.present = 0;
1181 if ((features & 3) > 1) {
1182 p = parse_power(p, q, &entry->vpp1);
1183 if (p == NULL) return CS_BAD_TUPLE;
1184 } else
1185 entry->vpp1.present = 0;
1186 if ((features & 3) > 2) {
1187 p = parse_power(p, q, &entry->vpp2);
1188 if (p == NULL) return CS_BAD_TUPLE;
1189 } else
1190 entry->vpp2.present = 0;
1191
1192 /* I/O window options */
1193 if (features & 0x08) {
1194 if (p == q) return CS_BAD_TUPLE;
1195 entry->io = *p; p++;
1196 } else
1197 entry->io = 0;
1198
1199 /* Interrupt options */
1200 if (features & 0x10) {
1201 p = parse_irq(p, q, &entry->irq);
1202 if (p == NULL) return CS_BAD_TUPLE;
1203 } else
1204 entry->irq.IRQInfo1 = 0;
1205
1206 if (features & 0x20) {
1207 if (p == q) return CS_BAD_TUPLE;
1208 entry->mem = *p; p++;
1209 } else
1210 entry->mem = 0;
1211
1212 /* Misc features */
1213 if (features & 0x80) {
1214 if (p == q) return CS_BAD_TUPLE;
1215 entry->flags |= (*p << 8);
1216 if (*p & 0x80) {
1217 if (++p == q) return CS_BAD_TUPLE;
1218 entry->flags |= (*p << 16);
1219 }
1220 while (*p & 0x80)
1221 if (++p == q) return CS_BAD_TUPLE;
1222 p++;
1223 }
1224
1225 entry->subtuples = q-p;
1226
1227 return CS_SUCCESS;
1228}
1229
1230#endif
1231
1232/*====================================================================*/
1233
1234static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
1235{
1236 u_char *p, *q;
1237 int n;
1238
1239 p = (u_char *)tuple->TupleData;
1240 q = p + tuple->TupleDataLen;
1241
1242 for (n = 0; n < CISTPL_MAX_DEVICES; n++) {
1243 if (p > q-6) break;
1244 geo->geo[n].buswidth = p[0];
1245 geo->geo[n].erase_block = 1 << (p[1]-1);
1246 geo->geo[n].read_block = 1 << (p[2]-1);
1247 geo->geo[n].write_block = 1 << (p[3]-1);
1248 geo->geo[n].partition = 1 << (p[4]-1);
1249 geo->geo[n].interleave = 1 << (p[5]-1);
1250 p += 6;
1251 }
1252 geo->ngeo = n;
1253 return CS_SUCCESS;
1254}
1255
1256/*====================================================================*/
1257
1258static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2)
1259{
1260 u_char *p, *q;
1261
1262 if (tuple->TupleDataLen < 10)
1263 return CS_BAD_TUPLE;
1264
1265 p = tuple->TupleData;
1266 q = p + tuple->TupleDataLen;
1267
1268 v2->vers = p[0];
1269 v2->comply = p[1];
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +03001270 v2->dindex = le16_to_cpu(*(__le16 *)(p+2));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271 v2->vspec8 = p[6];
1272 v2->vspec9 = p[7];
1273 v2->nhdr = p[8];
1274 p += 9;
1275 return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL);
1276}
1277
1278/*====================================================================*/
1279
1280static int parse_org(tuple_t *tuple, cistpl_org_t *org)
1281{
1282 u_char *p, *q;
1283 int i;
1284
1285 p = tuple->TupleData;
1286 q = p + tuple->TupleDataLen;
1287 if (p == q) return CS_BAD_TUPLE;
1288 org->data_org = *p;
1289 if (++p == q) return CS_BAD_TUPLE;
1290 for (i = 0; i < 30; i++) {
1291 org->desc[i] = *p;
1292 if (*p == '\0') break;
1293 if (++p == q) return CS_BAD_TUPLE;
1294 }
1295 return CS_SUCCESS;
1296}
1297
1298/*====================================================================*/
1299
1300static int parse_format(tuple_t *tuple, cistpl_format_t *fmt)
1301{
1302 u_char *p;
1303
1304 if (tuple->TupleDataLen < 10)
1305 return CS_BAD_TUPLE;
1306
1307 p = tuple->TupleData;
1308
1309 fmt->type = p[0];
1310 fmt->edc = p[1];
Alexey Dobriyan3cf89b12005-12-23 23:51:08 +03001311 fmt->offset = le32_to_cpu(*(__le32 *)(p+2));
1312 fmt->length = le32_to_cpu(*(__le32 *)(p+6));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313
1314 return CS_SUCCESS;
1315}
1316
1317/*====================================================================*/
1318
1319int pccard_parse_tuple(tuple_t *tuple, cisparse_t *parse)
1320{
1321 int ret = CS_SUCCESS;
1322
1323 if (tuple->TupleDataLen > tuple->TupleDataMax)
1324 return CS_BAD_TUPLE;
1325 switch (tuple->TupleCode) {
1326 case CISTPL_DEVICE:
1327 case CISTPL_DEVICE_A:
1328 ret = parse_device(tuple, &parse->device);
1329 break;
1330#ifdef CONFIG_CARDBUS
1331 case CISTPL_BAR:
1332 ret = parse_bar(tuple, &parse->bar);
1333 break;
1334 case CISTPL_CONFIG_CB:
1335 ret = parse_config_cb(tuple, &parse->config);
1336 break;
1337 case CISTPL_CFTABLE_ENTRY_CB:
1338 ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb);
1339 break;
1340#endif
1341 case CISTPL_CHECKSUM:
1342 ret = parse_checksum(tuple, &parse->checksum);
1343 break;
1344 case CISTPL_LONGLINK_A:
1345 case CISTPL_LONGLINK_C:
1346 ret = parse_longlink(tuple, &parse->longlink);
1347 break;
1348 case CISTPL_LONGLINK_MFC:
1349 ret = parse_longlink_mfc(tuple, &parse->longlink_mfc);
1350 break;
1351 case CISTPL_VERS_1:
1352 ret = parse_vers_1(tuple, &parse->version_1);
1353 break;
1354 case CISTPL_ALTSTR:
1355 ret = parse_altstr(tuple, &parse->altstr);
1356 break;
1357 case CISTPL_JEDEC_A:
1358 case CISTPL_JEDEC_C:
1359 ret = parse_jedec(tuple, &parse->jedec);
1360 break;
1361 case CISTPL_MANFID:
1362 ret = parse_manfid(tuple, &parse->manfid);
1363 break;
1364 case CISTPL_FUNCID:
1365 ret = parse_funcid(tuple, &parse->funcid);
1366 break;
1367 case CISTPL_FUNCE:
1368 ret = parse_funce(tuple, &parse->funce);
1369 break;
1370 case CISTPL_CONFIG:
1371 ret = parse_config(tuple, &parse->config);
1372 break;
1373 case CISTPL_CFTABLE_ENTRY:
1374 ret = parse_cftable_entry(tuple, &parse->cftable_entry);
1375 break;
1376 case CISTPL_DEVICE_GEO:
1377 case CISTPL_DEVICE_GEO_A:
1378 ret = parse_device_geo(tuple, &parse->device_geo);
1379 break;
1380 case CISTPL_VERS_2:
1381 ret = parse_vers_2(tuple, &parse->vers_2);
1382 break;
1383 case CISTPL_ORG:
1384 ret = parse_org(tuple, &parse->org);
1385 break;
1386 case CISTPL_FORMAT:
1387 case CISTPL_FORMAT_A:
1388 ret = parse_format(tuple, &parse->format);
1389 break;
1390 case CISTPL_NO_LINK:
1391 case CISTPL_LINKTARGET:
1392 ret = CS_SUCCESS;
1393 break;
1394 default:
1395 ret = CS_UNSUPPORTED_FUNCTION;
1396 break;
1397 }
1398 return ret;
1399}
1400EXPORT_SYMBOL(pccard_parse_tuple);
1401
1402/*======================================================================
1403
1404 This is used internally by Card Services to look up CIS stuff.
1405
1406======================================================================*/
1407
1408int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse)
1409{
1410 tuple_t tuple;
1411 cisdata_t *buf;
1412 int ret;
1413
1414 buf = kmalloc(256, GFP_KERNEL);
1415 if (buf == NULL)
1416 return CS_OUT_OF_RESOURCE;
1417 tuple.DesiredTuple = code;
1418 tuple.Attributes = TUPLE_RETURN_COMMON;
1419 ret = pccard_get_first_tuple(s, function, &tuple);
1420 if (ret != CS_SUCCESS) goto done;
1421 tuple.TupleData = buf;
1422 tuple.TupleOffset = 0;
1423 tuple.TupleDataMax = 255;
1424 ret = pccard_get_tuple_data(s, &tuple);
1425 if (ret != CS_SUCCESS) goto done;
1426 ret = pccard_parse_tuple(&tuple, parse);
1427done:
1428 kfree(buf);
1429 return ret;
1430}
1431EXPORT_SYMBOL(pccard_read_tuple);
1432
1433/*======================================================================
1434
1435 This tries to determine if a card has a sensible CIS. It returns
1436 the number of tuples in the CIS, or 0 if the CIS looks bad. The
1437 checks include making sure several critical tuples are present and
1438 valid; seeing if the total number of tuples is reasonable; and
1439 looking for tuples that use reserved codes.
1440
1441======================================================================*/
1442
1443int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, cisinfo_t *info)
1444{
1445 tuple_t *tuple;
1446 cisparse_t *p;
1447 int ret, reserved, dev_ok = 0, ident_ok = 0;
1448
1449 if (!s)
1450 return CS_BAD_HANDLE;
1451
1452 tuple = kmalloc(sizeof(*tuple), GFP_KERNEL);
1453 if (tuple == NULL)
1454 return CS_OUT_OF_RESOURCE;
1455 p = kmalloc(sizeof(*p), GFP_KERNEL);
1456 if (p == NULL) {
1457 kfree(tuple);
1458 return CS_OUT_OF_RESOURCE;
1459 }
1460
1461 info->Chains = reserved = 0;
1462 tuple->DesiredTuple = RETURN_FIRST_TUPLE;
1463 tuple->Attributes = TUPLE_RETURN_COMMON;
1464 ret = pccard_get_first_tuple(s, function, tuple);
1465 if (ret != CS_SUCCESS)
1466 goto done;
1467
1468 /* First tuple should be DEVICE; we should really have either that
1469 or a CFTABLE_ENTRY of some sort */
1470 if ((tuple->TupleCode == CISTPL_DEVICE) ||
1471 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY, p) == CS_SUCCESS) ||
1472 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY_CB, p) == CS_SUCCESS))
1473 dev_ok++;
1474
1475 /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
1476 tuple, for card identification. Certain old D-Link and Linksys
1477 cards have only a broken VERS_2 tuple; hence the bogus test. */
1478 if ((pccard_read_tuple(s, function, CISTPL_MANFID, p) == CS_SUCCESS) ||
1479 (pccard_read_tuple(s, function, CISTPL_VERS_1, p) == CS_SUCCESS) ||
1480 (pccard_read_tuple(s, function, CISTPL_VERS_2, p) != CS_NO_MORE_ITEMS))
1481 ident_ok++;
1482
1483 if (!dev_ok && !ident_ok)
1484 goto done;
1485
1486 for (info->Chains = 1; info->Chains < MAX_TUPLES; info->Chains++) {
1487 ret = pccard_get_next_tuple(s, function, tuple);
1488 if (ret != CS_SUCCESS) break;
1489 if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) ||
1490 ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) ||
1491 ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff)))
1492 reserved++;
1493 }
1494 if ((info->Chains == MAX_TUPLES) || (reserved > 5) ||
1495 ((!dev_ok || !ident_ok) && (info->Chains > 10)))
1496 info->Chains = 0;
1497
1498done:
1499 kfree(tuple);
1500 kfree(p);
1501 return CS_SUCCESS;
1502}
1503EXPORT_SYMBOL(pccard_validate_cis);