blob: 2dc3e611a9a3473fbbb2a715db4de58d270a3f63 [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
15#include <linux/config.h>
16#include <linux/module.h>
17#include <linux/moduleparam.h>
18#include <linux/kernel.h>
19#include <linux/string.h>
20#include <linux/major.h>
21#include <linux/errno.h>
22#include <linux/timer.h>
23#include <linux/slab.h>
24#include <linux/mm.h>
25#include <linux/sched.h>
26#include <linux/pci.h>
27#include <linux/ioport.h>
28#include <asm/io.h>
29#include <asm/byteorder.h>
30
31#include <pcmcia/cs_types.h>
32#include <pcmcia/ss.h>
33#include <pcmcia/cs.h>
34#include <pcmcia/bulkmem.h>
35#include <pcmcia/cisreg.h>
36#include <pcmcia/cistpl.h>
37#include "cs_internal.h"
38
39static const u_char mantissa[] = {
40 10, 12, 13, 15, 20, 25, 30, 35,
41 40, 45, 50, 55, 60, 70, 80, 90
42};
43
44static const u_int exponent[] = {
45 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
46};
47
48/* Convert an extended speed byte to a time in nanoseconds */
49#define SPEED_CVT(v) \
50 (mantissa[(((v)>>3)&15)-1] * exponent[(v)&7] / 10)
51/* Convert a power byte to a current in 0.1 microamps */
52#define POWER_CVT(v) \
53 (mantissa[((v)>>3)&15] * exponent[(v)&7] / 10)
54#define POWER_SCALE(v) (exponent[(v)&7])
55
56/* Upper limit on reasonable # of tuples */
57#define MAX_TUPLES 200
58
59/*====================================================================*/
60
61/* Parameters that can be set with 'insmod' */
62
63#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
64
65INT_MODULE_PARM(cis_width, 0); /* 16-bit CIS? */
66
67void release_cis_mem(struct pcmcia_socket *s)
68{
69 if (s->cis_mem.flags & MAP_ACTIVE) {
70 s->cis_mem.flags &= ~MAP_ACTIVE;
71 s->ops->set_mem_map(s, &s->cis_mem);
72 if (s->cis_mem.res) {
73 release_resource(s->cis_mem.res);
74 kfree(s->cis_mem.res);
75 s->cis_mem.res = NULL;
76 }
77 iounmap(s->cis_virt);
78 s->cis_virt = NULL;
79 }
80}
81EXPORT_SYMBOL(release_cis_mem);
82
83/*
84 * Map the card memory at "card_offset" into virtual space.
85 * If flags & MAP_ATTRIB, map the attribute space, otherwise
86 * map the memory space.
87 */
88static void __iomem *
89set_cis_map(struct pcmcia_socket *s, unsigned int card_offset, unsigned int flags)
90{
Dominik Brodowski2e5a3e72005-07-28 01:07:23 -070091 pccard_mem_map *mem = &s->cis_mem;
92 int ret;
Dominik Brodowski2ad0a0a2005-06-27 16:28:58 -070093
Dominik Brodowski2e5a3e72005-07-28 01:07:23 -070094 if (!(s->features & SS_CAP_STATIC_MAP) && (mem->res == NULL)) {
95 mem->res = pcmcia_find_mem_region(0, s->map_size, s->map_size, 0, s);
96 if (mem->res == NULL) {
97 printk(KERN_NOTICE "cs: unable to map card memory!\n");
98 return NULL;
99 }
100 s->cis_virt = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 }
Dominik Brodowski2ad0a0a2005-06-27 16:28:58 -0700102
Dominik Brodowski2e5a3e72005-07-28 01:07:23 -0700103 if (!(s->features & SS_CAP_STATIC_MAP) && (!s->cis_virt))
104 s->cis_virt = ioremap(mem->res->start, s->map_size);
105
106 mem->card_start = card_offset;
107 mem->flags = flags;
108
109 ret = s->ops->set_mem_map(s, mem);
110 if (ret) {
111 iounmap(s->cis_virt);
112 s->cis_virt = NULL;
113 return NULL;
114 }
115
116 if (s->features & SS_CAP_STATIC_MAP) {
117 if (s->cis_virt)
118 iounmap(s->cis_virt);
119 s->cis_virt = ioremap(mem->static_start, s->map_size);
120 }
121
122 return s->cis_virt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123}
124
125/*======================================================================
126
127 Low-level functions to read and write CIS memory. I think the
128 write routine is only useful for writing one-byte registers.
129
130======================================================================*/
131
132/* Bits in attr field */
133#define IS_ATTR 1
134#define IS_INDIRECT 8
135
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700136int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 u_int len, void *ptr)
138{
139 void __iomem *sys, *end;
140 unsigned char *buf = ptr;
141
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700142 cs_dbg(s, 3, "pcmcia_read_cis_mem(%d, %#x, %u)\n", attr, addr, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143
144 if (attr & IS_INDIRECT) {
145 /* Indirect accesses use a bunch of special registers at fixed
146 locations in common memory */
147 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
148 if (attr & IS_ATTR) {
149 addr *= 2;
150 flags = ICTRL0_AUTOINC;
151 }
152
153 sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
154 if (!sys) {
155 memset(ptr, 0xff, len);
156 return -1;
157 }
158
159 writeb(flags, sys+CISREG_ICTRL0);
160 writeb(addr & 0xff, sys+CISREG_IADDR0);
161 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
162 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
163 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
164 for ( ; len > 0; len--, buf++)
165 *buf = readb(sys+CISREG_IDATA0);
166 } else {
167 u_int inc = 1, card_offset, flags;
168
169 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
170 if (attr) {
171 flags |= MAP_ATTRIB;
172 inc++;
173 addr *= 2;
174 }
175
176 card_offset = addr & ~(s->map_size-1);
177 while (len) {
178 sys = set_cis_map(s, card_offset, flags);
179 if (!sys) {
180 memset(ptr, 0xff, len);
181 return -1;
182 }
183 end = sys + s->map_size;
184 sys = sys + (addr & (s->map_size-1));
185 for ( ; len > 0; len--, buf++, sys += inc) {
186 if (sys == end)
187 break;
188 *buf = readb(sys);
189 }
190 card_offset += s->map_size;
191 addr = 0;
192 }
193 }
194 cs_dbg(s, 3, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n",
195 *(u_char *)(ptr+0), *(u_char *)(ptr+1),
196 *(u_char *)(ptr+2), *(u_char *)(ptr+3));
197 return 0;
198}
Dominik Brodowski1a8d4662005-06-27 16:28:53 -0700199EXPORT_SYMBOL(pcmcia_read_cis_mem);
200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700202void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 u_int len, void *ptr)
204{
205 void __iomem *sys, *end;
206 unsigned char *buf = ptr;
207
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700208 cs_dbg(s, 3, "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr, addr, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209
210 if (attr & IS_INDIRECT) {
211 /* Indirect accesses use a bunch of special registers at fixed
212 locations in common memory */
213 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
214 if (attr & IS_ATTR) {
215 addr *= 2;
216 flags = ICTRL0_AUTOINC;
217 }
218
219 sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
220 if (!sys)
221 return; /* FIXME: Error */
222
223 writeb(flags, sys+CISREG_ICTRL0);
224 writeb(addr & 0xff, sys+CISREG_IADDR0);
225 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
226 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
227 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
228 for ( ; len > 0; len--, buf++)
229 writeb(*buf, sys+CISREG_IDATA0);
230 } else {
231 u_int inc = 1, card_offset, flags;
232
233 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
234 if (attr & IS_ATTR) {
235 flags |= MAP_ATTRIB;
236 inc++;
237 addr *= 2;
238 }
239
240 card_offset = addr & ~(s->map_size-1);
241 while (len) {
242 sys = set_cis_map(s, card_offset, flags);
243 if (!sys)
244 return; /* FIXME: error */
245
246 end = sys + s->map_size;
247 sys = sys + (addr & (s->map_size-1));
248 for ( ; len > 0; len--, buf++, sys += inc) {
249 if (sys == end)
250 break;
251 writeb(*buf, sys);
252 }
253 card_offset += s->map_size;
254 addr = 0;
255 }
256 }
257}
Dominik Brodowski1a8d4662005-06-27 16:28:53 -0700258EXPORT_SYMBOL(pcmcia_write_cis_mem);
259
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260
261/*======================================================================
262
263 This is a wrapper around read_cis_mem, with the same interface,
264 but which caches information, for cards whose CIS may not be
265 readable all the time.
266
267======================================================================*/
268
269static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr,
270 u_int len, void *ptr)
271{
272 struct cis_cache_entry *cis;
273 int ret;
274
275 if (s->fake_cis) {
276 if (s->fake_cis_len > addr+len)
277 memcpy(ptr, s->fake_cis+addr, len);
278 else
279 memset(ptr, 0xff, len);
280 return;
281 }
282
283 list_for_each_entry(cis, &s->cis_cache, node) {
284 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
285 memcpy(ptr, cis->cache, len);
286 return;
287 }
288 }
289
290#ifdef CONFIG_CARDBUS
291 if (s->state & SOCKET_CARDBUS)
292 ret = read_cb_mem(s, attr, addr, len, ptr);
293 else
294#endif
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700295 ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
297 if (ret == 0) {
298 /* Copy data into the cache */
299 cis = kmalloc(sizeof(struct cis_cache_entry) + len, GFP_KERNEL);
300 if (cis) {
301 cis->addr = addr;
302 cis->len = len;
303 cis->attr = attr;
304 memcpy(cis->cache, ptr, len);
305 list_add(&cis->node, &s->cis_cache);
306 }
307 }
308}
309
310static void
311remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len)
312{
313 struct cis_cache_entry *cis;
314
315 list_for_each_entry(cis, &s->cis_cache, node)
316 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
317 list_del(&cis->node);
318 kfree(cis);
319 break;
320 }
321}
322
323void destroy_cis_cache(struct pcmcia_socket *s)
324{
325 struct list_head *l, *n;
326
327 list_for_each_safe(l, n, &s->cis_cache) {
328 struct cis_cache_entry *cis = list_entry(l, struct cis_cache_entry, node);
329
330 list_del(&cis->node);
331 kfree(cis);
332 }
333
334 /*
335 * If there was a fake CIS, destroy that as well.
336 */
Jesper Juhl6044ec82005-11-07 01:01:32 -0800337 kfree(s->fake_cis);
338 s->fake_cis = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339}
340EXPORT_SYMBOL(destroy_cis_cache);
341
342/*======================================================================
343
344 This verifies if the CIS of a card matches what is in the CIS
345 cache.
346
347======================================================================*/
348
349int verify_cis_cache(struct pcmcia_socket *s)
350{
351 struct cis_cache_entry *cis;
352 char *buf;
353
354 buf = kmalloc(256, GFP_KERNEL);
355 if (buf == NULL)
356 return -1;
357 list_for_each_entry(cis, &s->cis_cache, node) {
358 int len = cis->len;
359
360 if (len > 256)
361 len = 256;
362#ifdef CONFIG_CARDBUS
363 if (s->state & SOCKET_CARDBUS)
364 read_cb_mem(s, cis->attr, cis->addr, len, buf);
365 else
366#endif
Dominik Brodowskie6ea0b9e2005-06-27 16:28:52 -0700367 pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368
369 if (memcmp(buf, cis->cache, len) != 0) {
370 kfree(buf);
371 return -1;
372 }
373 }
374 kfree(buf);
375 return 0;
376}
377
378/*======================================================================
379
380 For really bad cards, we provide a facility for uploading a
381 replacement CIS.
382
383======================================================================*/
384
385int pcmcia_replace_cis(struct pcmcia_socket *s, cisdump_t *cis)
386{
Jesper Juhl6044ec82005-11-07 01:01:32 -0800387 kfree(s->fake_cis);
388 s->fake_cis = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 if (cis->Length > CISTPL_MAX_CIS_SIZE)
390 return CS_BAD_SIZE;
391 s->fake_cis = kmalloc(cis->Length, GFP_KERNEL);
392 if (s->fake_cis == NULL)
393 return CS_OUT_OF_RESOURCE;
394 s->fake_cis_len = cis->Length;
395 memcpy(s->fake_cis, cis->Data, cis->Length);
396 return CS_SUCCESS;
397}
Dominik Brodowski33519dd2005-06-27 16:28:53 -0700398EXPORT_SYMBOL(pcmcia_replace_cis);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399
400/*======================================================================
401
402 The high-level CIS tuple services
403
404======================================================================*/
405
406typedef struct tuple_flags {
407 u_int link_space:4;
408 u_int has_link:1;
409 u_int mfc_fn:3;
410 u_int space:4;
411} tuple_flags;
412
413#define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
414#define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
415#define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
416#define SPACE(f) (((tuple_flags *)(&(f)))->space)
417
418int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int func, tuple_t *tuple);
419
420int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
421{
422 if (!s)
423 return CS_BAD_HANDLE;
424 if (!(s->state & SOCKET_PRESENT))
425 return CS_NO_CARD;
426 tuple->TupleLink = tuple->Flags = 0;
427#ifdef CONFIG_CARDBUS
428 if (s->state & SOCKET_CARDBUS) {
429 struct pci_dev *dev = s->cb_dev;
430 u_int ptr;
431 pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr);
432 tuple->CISOffset = ptr & ~7;
433 SPACE(tuple->Flags) = (ptr & 7);
434 } else
435#endif
436 {
437 /* Assume presence of a LONGLINK_C to address 0 */
438 tuple->CISOffset = tuple->LinkOffset = 0;
439 SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
440 }
441 if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) &&
442 !(tuple->Attributes & TUPLE_RETURN_COMMON)) {
443 cisdata_t req = tuple->DesiredTuple;
444 tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
445 if (pccard_get_next_tuple(s, function, tuple) == CS_SUCCESS) {
446 tuple->DesiredTuple = CISTPL_LINKTARGET;
447 if (pccard_get_next_tuple(s, function, tuple) != CS_SUCCESS)
448 return CS_NO_MORE_ITEMS;
449 } else
450 tuple->CISOffset = tuple->TupleLink = 0;
451 tuple->DesiredTuple = req;
452 }
453 return pccard_get_next_tuple(s, function, tuple);
454}
455EXPORT_SYMBOL(pccard_get_first_tuple);
456
457static int follow_link(struct pcmcia_socket *s, tuple_t *tuple)
458{
459 u_char link[5];
460 u_int ofs;
461
462 if (MFC_FN(tuple->Flags)) {
463 /* Get indirect link from the MFC tuple */
464 read_cis_cache(s, LINK_SPACE(tuple->Flags),
465 tuple->LinkOffset, 5, link);
466 ofs = le32_to_cpu(*(u_int *)(link+1));
467 SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR);
468 /* Move to the next indirect link */
469 tuple->LinkOffset += 5;
470 MFC_FN(tuple->Flags)--;
471 } else if (HAS_LINK(tuple->Flags)) {
472 ofs = tuple->LinkOffset;
473 SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags);
474 HAS_LINK(tuple->Flags) = 0;
475 } else {
476 return -1;
477 }
478 if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) {
479 /* This is ugly, but a common CIS error is to code the long
480 link offset incorrectly, so we check the right spot... */
481 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
482 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
483 (strncmp(link+2, "CIS", 3) == 0))
484 return ofs;
485 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
486 /* Then, we try the wrong spot... */
487 ofs = ofs >> 1;
488 }
489 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
490 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
491 (strncmp(link+2, "CIS", 3) == 0))
492 return ofs;
493 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
494 return -1;
495}
496
497int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
498{
499 u_char link[2], tmp;
500 int ofs, i, attr;
501
502 if (!s)
503 return CS_BAD_HANDLE;
504 if (!(s->state & SOCKET_PRESENT))
505 return CS_NO_CARD;
506
507 link[1] = tuple->TupleLink;
508 ofs = tuple->CISOffset + tuple->TupleLink;
509 attr = SPACE(tuple->Flags);
510
511 for (i = 0; i < MAX_TUPLES; i++) {
512 if (link[1] == 0xff) {
513 link[0] = CISTPL_END;
514 } else {
515 read_cis_cache(s, attr, ofs, 2, link);
516 if (link[0] == CISTPL_NULL) {
517 ofs++; continue;
518 }
519 }
520
521 /* End of chain? Follow long link if possible */
522 if (link[0] == CISTPL_END) {
523 if ((ofs = follow_link(s, tuple)) < 0)
524 return CS_NO_MORE_ITEMS;
525 attr = SPACE(tuple->Flags);
526 read_cis_cache(s, attr, ofs, 2, link);
527 }
528
529 /* Is this a link tuple? Make a note of it */
530 if ((link[0] == CISTPL_LONGLINK_A) ||
531 (link[0] == CISTPL_LONGLINK_C) ||
532 (link[0] == CISTPL_LONGLINK_MFC) ||
533 (link[0] == CISTPL_LINKTARGET) ||
534 (link[0] == CISTPL_INDIRECT) ||
535 (link[0] == CISTPL_NO_LINK)) {
536 switch (link[0]) {
537 case CISTPL_LONGLINK_A:
538 HAS_LINK(tuple->Flags) = 1;
539 LINK_SPACE(tuple->Flags) = attr | IS_ATTR;
540 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
541 break;
542 case CISTPL_LONGLINK_C:
543 HAS_LINK(tuple->Flags) = 1;
544 LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR;
545 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
546 break;
547 case CISTPL_INDIRECT:
548 HAS_LINK(tuple->Flags) = 1;
549 LINK_SPACE(tuple->Flags) = IS_ATTR | IS_INDIRECT;
550 tuple->LinkOffset = 0;
551 break;
552 case CISTPL_LONGLINK_MFC:
553 tuple->LinkOffset = ofs + 3;
554 LINK_SPACE(tuple->Flags) = attr;
555 if (function == BIND_FN_ALL) {
556 /* Follow all the MFC links */
557 read_cis_cache(s, attr, ofs+2, 1, &tmp);
558 MFC_FN(tuple->Flags) = tmp;
559 } else {
560 /* Follow exactly one of the links */
561 MFC_FN(tuple->Flags) = 1;
562 tuple->LinkOffset += function * 5;
563 }
564 break;
565 case CISTPL_NO_LINK:
566 HAS_LINK(tuple->Flags) = 0;
567 break;
568 }
569 if ((tuple->Attributes & TUPLE_RETURN_LINK) &&
570 (tuple->DesiredTuple == RETURN_FIRST_TUPLE))
571 break;
572 } else
573 if (tuple->DesiredTuple == RETURN_FIRST_TUPLE)
574 break;
575
576 if (link[0] == tuple->DesiredTuple)
577 break;
578 ofs += link[1] + 2;
579 }
580 if (i == MAX_TUPLES) {
581 cs_dbg(s, 1, "cs: overrun in pcmcia_get_next_tuple\n");
582 return CS_NO_MORE_ITEMS;
583 }
584
585 tuple->TupleCode = link[0];
586 tuple->TupleLink = link[1];
587 tuple->CISOffset = ofs + 2;
588 return CS_SUCCESS;
589}
590EXPORT_SYMBOL(pccard_get_next_tuple);
591
592/*====================================================================*/
593
594#define _MIN(a, b) (((a) < (b)) ? (a) : (b))
595
596int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple)
597{
598 u_int len;
599
600 if (!s)
601 return CS_BAD_HANDLE;
602
603 if (tuple->TupleLink < tuple->TupleOffset)
604 return CS_NO_MORE_ITEMS;
605 len = tuple->TupleLink - tuple->TupleOffset;
606 tuple->TupleDataLen = tuple->TupleLink;
607 if (len == 0)
608 return CS_SUCCESS;
609 read_cis_cache(s, SPACE(tuple->Flags),
610 tuple->CISOffset + tuple->TupleOffset,
611 _MIN(len, tuple->TupleDataMax), tuple->TupleData);
612 return CS_SUCCESS;
613}
614EXPORT_SYMBOL(pccard_get_tuple_data);
615
616
617/*======================================================================
618
619 Parsing routines for individual tuples
620
621======================================================================*/
622
623static int parse_device(tuple_t *tuple, cistpl_device_t *device)
624{
625 int i;
626 u_char scale;
627 u_char *p, *q;
628
629 p = (u_char *)tuple->TupleData;
630 q = p + tuple->TupleDataLen;
631
632 device->ndev = 0;
633 for (i = 0; i < CISTPL_MAX_DEVICES; i++) {
634
635 if (*p == 0xff) break;
636 device->dev[i].type = (*p >> 4);
637 device->dev[i].wp = (*p & 0x08) ? 1 : 0;
638 switch (*p & 0x07) {
639 case 0: device->dev[i].speed = 0; break;
640 case 1: device->dev[i].speed = 250; break;
641 case 2: device->dev[i].speed = 200; break;
642 case 3: device->dev[i].speed = 150; break;
643 case 4: device->dev[i].speed = 100; break;
644 case 7:
645 if (++p == q) return CS_BAD_TUPLE;
646 device->dev[i].speed = SPEED_CVT(*p);
647 while (*p & 0x80)
648 if (++p == q) return CS_BAD_TUPLE;
649 break;
650 default:
651 return CS_BAD_TUPLE;
652 }
653
654 if (++p == q) return CS_BAD_TUPLE;
655 if (*p == 0xff) break;
656 scale = *p & 7;
657 if (scale == 7) return CS_BAD_TUPLE;
658 device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2));
659 device->ndev++;
660 if (++p == q) break;
661 }
662
663 return CS_SUCCESS;
664}
665
666/*====================================================================*/
667
668static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum)
669{
670 u_char *p;
671 if (tuple->TupleDataLen < 5)
672 return CS_BAD_TUPLE;
673 p = (u_char *)tuple->TupleData;
674 csum->addr = tuple->CISOffset+(short)le16_to_cpu(*(u_short *)p)-2;
675 csum->len = le16_to_cpu(*(u_short *)(p + 2));
676 csum->sum = *(p+4);
677 return CS_SUCCESS;
678}
679
680/*====================================================================*/
681
682static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link)
683{
684 if (tuple->TupleDataLen < 4)
685 return CS_BAD_TUPLE;
686 link->addr = le32_to_cpu(*(u_int *)tuple->TupleData);
687 return CS_SUCCESS;
688}
689
690/*====================================================================*/
691
692static int parse_longlink_mfc(tuple_t *tuple,
693 cistpl_longlink_mfc_t *link)
694{
695 u_char *p;
696 int i;
697
698 p = (u_char *)tuple->TupleData;
699
700 link->nfn = *p; p++;
701 if (tuple->TupleDataLen <= link->nfn*5)
702 return CS_BAD_TUPLE;
703 for (i = 0; i < link->nfn; i++) {
704 link->fn[i].space = *p; p++;
705 link->fn[i].addr = le32_to_cpu(*(u_int *)p); p += 4;
706 }
707 return CS_SUCCESS;
708}
709
710/*====================================================================*/
711
712static int parse_strings(u_char *p, u_char *q, int max,
713 char *s, u_char *ofs, u_char *found)
714{
715 int i, j, ns;
716
717 if (p == q) return CS_BAD_TUPLE;
718 ns = 0; j = 0;
719 for (i = 0; i < max; i++) {
720 if (*p == 0xff) break;
721 ofs[i] = j;
722 ns++;
723 for (;;) {
724 s[j++] = (*p == 0xff) ? '\0' : *p;
725 if ((*p == '\0') || (*p == 0xff)) break;
726 if (++p == q) return CS_BAD_TUPLE;
727 }
728 if ((*p == 0xff) || (++p == q)) break;
729 }
730 if (found) {
731 *found = ns;
732 return CS_SUCCESS;
733 } else {
734 return (ns == max) ? CS_SUCCESS : CS_BAD_TUPLE;
735 }
736}
737
738/*====================================================================*/
739
740static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1)
741{
742 u_char *p, *q;
743
744 p = (u_char *)tuple->TupleData;
745 q = p + tuple->TupleDataLen;
746
747 vers_1->major = *p; p++;
748 vers_1->minor = *p; p++;
749 if (p >= q) return CS_BAD_TUPLE;
750
751 return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS,
752 vers_1->str, vers_1->ofs, &vers_1->ns);
753}
754
755/*====================================================================*/
756
757static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr)
758{
759 u_char *p, *q;
760
761 p = (u_char *)tuple->TupleData;
762 q = p + tuple->TupleDataLen;
763
764 return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS,
765 altstr->str, altstr->ofs, &altstr->ns);
766}
767
768/*====================================================================*/
769
770static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec)
771{
772 u_char *p, *q;
773 int nid;
774
775 p = (u_char *)tuple->TupleData;
776 q = p + tuple->TupleDataLen;
777
778 for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) {
779 if (p > q-2) break;
780 jedec->id[nid].mfr = p[0];
781 jedec->id[nid].info = p[1];
782 p += 2;
783 }
784 jedec->nid = nid;
785 return CS_SUCCESS;
786}
787
788/*====================================================================*/
789
790static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m)
791{
792 u_short *p;
793 if (tuple->TupleDataLen < 4)
794 return CS_BAD_TUPLE;
795 p = (u_short *)tuple->TupleData;
796 m->manf = le16_to_cpu(p[0]);
797 m->card = le16_to_cpu(p[1]);
798 return CS_SUCCESS;
799}
800
801/*====================================================================*/
802
803static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f)
804{
805 u_char *p;
806 if (tuple->TupleDataLen < 2)
807 return CS_BAD_TUPLE;
808 p = (u_char *)tuple->TupleData;
809 f->func = p[0];
810 f->sysinit = p[1];
811 return CS_SUCCESS;
812}
813
814/*====================================================================*/
815
816static int parse_funce(tuple_t *tuple, cistpl_funce_t *f)
817{
818 u_char *p;
819 int i;
820 if (tuple->TupleDataLen < 1)
821 return CS_BAD_TUPLE;
822 p = (u_char *)tuple->TupleData;
823 f->type = p[0];
824 for (i = 1; i < tuple->TupleDataLen; i++)
825 f->data[i-1] = p[i];
826 return CS_SUCCESS;
827}
828
829/*====================================================================*/
830
831static int parse_config(tuple_t *tuple, cistpl_config_t *config)
832{
833 int rasz, rmsz, i;
834 u_char *p;
835
836 p = (u_char *)tuple->TupleData;
837 rasz = *p & 0x03;
838 rmsz = (*p & 0x3c) >> 2;
839 if (tuple->TupleDataLen < rasz+rmsz+4)
840 return CS_BAD_TUPLE;
841 config->last_idx = *(++p);
842 p++;
843 config->base = 0;
844 for (i = 0; i <= rasz; i++)
845 config->base += p[i] << (8*i);
846 p += rasz+1;
847 for (i = 0; i < 4; i++)
848 config->rmask[i] = 0;
849 for (i = 0; i <= rmsz; i++)
850 config->rmask[i>>2] += p[i] << (8*(i%4));
851 config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4);
852 return CS_SUCCESS;
853}
854
855/*======================================================================
856
857 The following routines are all used to parse the nightmarish
858 config table entries.
859
860======================================================================*/
861
862static u_char *parse_power(u_char *p, u_char *q,
863 cistpl_power_t *pwr)
864{
865 int i;
866 u_int scale;
867
868 if (p == q) return NULL;
869 pwr->present = *p;
870 pwr->flags = 0;
871 p++;
872 for (i = 0; i < 7; i++)
873 if (pwr->present & (1<<i)) {
874 if (p == q) return NULL;
875 pwr->param[i] = POWER_CVT(*p);
876 scale = POWER_SCALE(*p);
877 while (*p & 0x80) {
878 if (++p == q) return NULL;
879 if ((*p & 0x7f) < 100)
880 pwr->param[i] += (*p & 0x7f) * scale / 100;
881 else if (*p == 0x7d)
882 pwr->flags |= CISTPL_POWER_HIGHZ_OK;
883 else if (*p == 0x7e)
884 pwr->param[i] = 0;
885 else if (*p == 0x7f)
886 pwr->flags |= CISTPL_POWER_HIGHZ_REQ;
887 else
888 return NULL;
889 }
890 p++;
891 }
892 return p;
893}
894
895/*====================================================================*/
896
897static u_char *parse_timing(u_char *p, u_char *q,
898 cistpl_timing_t *timing)
899{
900 u_char scale;
901
902 if (p == q) return NULL;
903 scale = *p;
904 if ((scale & 3) != 3) {
905 if (++p == q) return NULL;
906 timing->wait = SPEED_CVT(*p);
907 timing->waitscale = exponent[scale & 3];
908 } else
909 timing->wait = 0;
910 scale >>= 2;
911 if ((scale & 7) != 7) {
912 if (++p == q) return NULL;
913 timing->ready = SPEED_CVT(*p);
914 timing->rdyscale = exponent[scale & 7];
915 } else
916 timing->ready = 0;
917 scale >>= 3;
918 if (scale != 7) {
919 if (++p == q) return NULL;
920 timing->reserved = SPEED_CVT(*p);
921 timing->rsvscale = exponent[scale];
922 } else
923 timing->reserved = 0;
924 p++;
925 return p;
926}
927
928/*====================================================================*/
929
930static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io)
931{
932 int i, j, bsz, lsz;
933
934 if (p == q) return NULL;
935 io->flags = *p;
936
937 if (!(*p & 0x80)) {
938 io->nwin = 1;
939 io->win[0].base = 0;
940 io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK));
941 return p+1;
942 }
943
944 if (++p == q) return NULL;
945 io->nwin = (*p & 0x0f) + 1;
946 bsz = (*p & 0x30) >> 4;
947 if (bsz == 3) bsz++;
948 lsz = (*p & 0xc0) >> 6;
949 if (lsz == 3) lsz++;
950 p++;
951
952 for (i = 0; i < io->nwin; i++) {
953 io->win[i].base = 0;
954 io->win[i].len = 1;
955 for (j = 0; j < bsz; j++, p++) {
956 if (p == q) return NULL;
957 io->win[i].base += *p << (j*8);
958 }
959 for (j = 0; j < lsz; j++, p++) {
960 if (p == q) return NULL;
961 io->win[i].len += *p << (j*8);
962 }
963 }
964 return p;
965}
966
967/*====================================================================*/
968
969static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem)
970{
971 int i, j, asz, lsz, has_ha;
972 u_int len, ca, ha;
973
974 if (p == q) return NULL;
975
976 mem->nwin = (*p & 0x07) + 1;
977 lsz = (*p & 0x18) >> 3;
978 asz = (*p & 0x60) >> 5;
979 has_ha = (*p & 0x80);
980 if (++p == q) return NULL;
981
982 for (i = 0; i < mem->nwin; i++) {
983 len = ca = ha = 0;
984 for (j = 0; j < lsz; j++, p++) {
985 if (p == q) return NULL;
986 len += *p << (j*8);
987 }
988 for (j = 0; j < asz; j++, p++) {
989 if (p == q) return NULL;
990 ca += *p << (j*8);
991 }
992 if (has_ha)
993 for (j = 0; j < asz; j++, p++) {
994 if (p == q) return NULL;
995 ha += *p << (j*8);
996 }
997 mem->win[i].len = len << 8;
998 mem->win[i].card_addr = ca << 8;
999 mem->win[i].host_addr = ha << 8;
1000 }
1001 return p;
1002}
1003
1004/*====================================================================*/
1005
1006static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq)
1007{
1008 if (p == q) return NULL;
1009 irq->IRQInfo1 = *p; p++;
1010 if (irq->IRQInfo1 & IRQ_INFO2_VALID) {
1011 if (p+2 > q) return NULL;
1012 irq->IRQInfo2 = (p[1]<<8) + p[0];
1013 p += 2;
1014 }
1015 return p;
1016}
1017
1018/*====================================================================*/
1019
1020static int parse_cftable_entry(tuple_t *tuple,
1021 cistpl_cftable_entry_t *entry)
1022{
1023 u_char *p, *q, features;
1024
1025 p = tuple->TupleData;
1026 q = p + tuple->TupleDataLen;
1027 entry->index = *p & 0x3f;
1028 entry->flags = 0;
1029 if (*p & 0x40)
1030 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1031 if (*p & 0x80) {
1032 if (++p == q) return CS_BAD_TUPLE;
1033 if (*p & 0x10)
1034 entry->flags |= CISTPL_CFTABLE_BVDS;
1035 if (*p & 0x20)
1036 entry->flags |= CISTPL_CFTABLE_WP;
1037 if (*p & 0x40)
1038 entry->flags |= CISTPL_CFTABLE_RDYBSY;
1039 if (*p & 0x80)
1040 entry->flags |= CISTPL_CFTABLE_MWAIT;
1041 entry->interface = *p & 0x0f;
1042 } else
1043 entry->interface = 0;
1044
1045 /* Process optional features */
1046 if (++p == q) return CS_BAD_TUPLE;
1047 features = *p; p++;
1048
1049 /* Power options */
1050 if ((features & 3) > 0) {
1051 p = parse_power(p, q, &entry->vcc);
1052 if (p == NULL) return CS_BAD_TUPLE;
1053 } else
1054 entry->vcc.present = 0;
1055 if ((features & 3) > 1) {
1056 p = parse_power(p, q, &entry->vpp1);
1057 if (p == NULL) return CS_BAD_TUPLE;
1058 } else
1059 entry->vpp1.present = 0;
1060 if ((features & 3) > 2) {
1061 p = parse_power(p, q, &entry->vpp2);
1062 if (p == NULL) return CS_BAD_TUPLE;
1063 } else
1064 entry->vpp2.present = 0;
1065
1066 /* Timing options */
1067 if (features & 0x04) {
1068 p = parse_timing(p, q, &entry->timing);
1069 if (p == NULL) return CS_BAD_TUPLE;
1070 } else {
1071 entry->timing.wait = 0;
1072 entry->timing.ready = 0;
1073 entry->timing.reserved = 0;
1074 }
1075
1076 /* I/O window options */
1077 if (features & 0x08) {
1078 p = parse_io(p, q, &entry->io);
1079 if (p == NULL) return CS_BAD_TUPLE;
1080 } else
1081 entry->io.nwin = 0;
1082
1083 /* Interrupt options */
1084 if (features & 0x10) {
1085 p = parse_irq(p, q, &entry->irq);
1086 if (p == NULL) return CS_BAD_TUPLE;
1087 } else
1088 entry->irq.IRQInfo1 = 0;
1089
1090 switch (features & 0x60) {
1091 case 0x00:
1092 entry->mem.nwin = 0;
1093 break;
1094 case 0x20:
1095 entry->mem.nwin = 1;
1096 entry->mem.win[0].len = le16_to_cpu(*(u_short *)p) << 8;
1097 entry->mem.win[0].card_addr = 0;
1098 entry->mem.win[0].host_addr = 0;
1099 p += 2;
1100 if (p > q) return CS_BAD_TUPLE;
1101 break;
1102 case 0x40:
1103 entry->mem.nwin = 1;
1104 entry->mem.win[0].len = le16_to_cpu(*(u_short *)p) << 8;
1105 entry->mem.win[0].card_addr =
1106 le16_to_cpu(*(u_short *)(p+2)) << 8;
1107 entry->mem.win[0].host_addr = 0;
1108 p += 4;
1109 if (p > q) return CS_BAD_TUPLE;
1110 break;
1111 case 0x60:
1112 p = parse_mem(p, q, &entry->mem);
1113 if (p == NULL) return CS_BAD_TUPLE;
1114 break;
1115 }
1116
1117 /* Misc features */
1118 if (features & 0x80) {
1119 if (p == q) return CS_BAD_TUPLE;
1120 entry->flags |= (*p << 8);
1121 while (*p & 0x80)
1122 if (++p == q) return CS_BAD_TUPLE;
1123 p++;
1124 }
1125
1126 entry->subtuples = q-p;
1127
1128 return CS_SUCCESS;
1129}
1130
1131/*====================================================================*/
1132
1133#ifdef CONFIG_CARDBUS
1134
1135static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar)
1136{
1137 u_char *p;
1138 if (tuple->TupleDataLen < 6)
1139 return CS_BAD_TUPLE;
1140 p = (u_char *)tuple->TupleData;
1141 bar->attr = *p;
1142 p += 2;
1143 bar->size = le32_to_cpu(*(u_int *)p);
1144 return CS_SUCCESS;
1145}
1146
1147static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config)
1148{
1149 u_char *p;
1150
1151 p = (u_char *)tuple->TupleData;
1152 if ((*p != 3) || (tuple->TupleDataLen < 6))
1153 return CS_BAD_TUPLE;
1154 config->last_idx = *(++p);
1155 p++;
1156 config->base = le32_to_cpu(*(u_int *)p);
1157 config->subtuples = tuple->TupleDataLen - 6;
1158 return CS_SUCCESS;
1159}
1160
1161static int parse_cftable_entry_cb(tuple_t *tuple,
1162 cistpl_cftable_entry_cb_t *entry)
1163{
1164 u_char *p, *q, features;
1165
1166 p = tuple->TupleData;
1167 q = p + tuple->TupleDataLen;
1168 entry->index = *p & 0x3f;
1169 entry->flags = 0;
1170 if (*p & 0x40)
1171 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1172
1173 /* Process optional features */
1174 if (++p == q) return CS_BAD_TUPLE;
1175 features = *p; p++;
1176
1177 /* Power options */
1178 if ((features & 3) > 0) {
1179 p = parse_power(p, q, &entry->vcc);
1180 if (p == NULL) return CS_BAD_TUPLE;
1181 } else
1182 entry->vcc.present = 0;
1183 if ((features & 3) > 1) {
1184 p = parse_power(p, q, &entry->vpp1);
1185 if (p == NULL) return CS_BAD_TUPLE;
1186 } else
1187 entry->vpp1.present = 0;
1188 if ((features & 3) > 2) {
1189 p = parse_power(p, q, &entry->vpp2);
1190 if (p == NULL) return CS_BAD_TUPLE;
1191 } else
1192 entry->vpp2.present = 0;
1193
1194 /* I/O window options */
1195 if (features & 0x08) {
1196 if (p == q) return CS_BAD_TUPLE;
1197 entry->io = *p; p++;
1198 } else
1199 entry->io = 0;
1200
1201 /* Interrupt options */
1202 if (features & 0x10) {
1203 p = parse_irq(p, q, &entry->irq);
1204 if (p == NULL) return CS_BAD_TUPLE;
1205 } else
1206 entry->irq.IRQInfo1 = 0;
1207
1208 if (features & 0x20) {
1209 if (p == q) return CS_BAD_TUPLE;
1210 entry->mem = *p; p++;
1211 } else
1212 entry->mem = 0;
1213
1214 /* Misc features */
1215 if (features & 0x80) {
1216 if (p == q) return CS_BAD_TUPLE;
1217 entry->flags |= (*p << 8);
1218 if (*p & 0x80) {
1219 if (++p == q) return CS_BAD_TUPLE;
1220 entry->flags |= (*p << 16);
1221 }
1222 while (*p & 0x80)
1223 if (++p == q) return CS_BAD_TUPLE;
1224 p++;
1225 }
1226
1227 entry->subtuples = q-p;
1228
1229 return CS_SUCCESS;
1230}
1231
1232#endif
1233
1234/*====================================================================*/
1235
1236static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
1237{
1238 u_char *p, *q;
1239 int n;
1240
1241 p = (u_char *)tuple->TupleData;
1242 q = p + tuple->TupleDataLen;
1243
1244 for (n = 0; n < CISTPL_MAX_DEVICES; n++) {
1245 if (p > q-6) break;
1246 geo->geo[n].buswidth = p[0];
1247 geo->geo[n].erase_block = 1 << (p[1]-1);
1248 geo->geo[n].read_block = 1 << (p[2]-1);
1249 geo->geo[n].write_block = 1 << (p[3]-1);
1250 geo->geo[n].partition = 1 << (p[4]-1);
1251 geo->geo[n].interleave = 1 << (p[5]-1);
1252 p += 6;
1253 }
1254 geo->ngeo = n;
1255 return CS_SUCCESS;
1256}
1257
1258/*====================================================================*/
1259
1260static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2)
1261{
1262 u_char *p, *q;
1263
1264 if (tuple->TupleDataLen < 10)
1265 return CS_BAD_TUPLE;
1266
1267 p = tuple->TupleData;
1268 q = p + tuple->TupleDataLen;
1269
1270 v2->vers = p[0];
1271 v2->comply = p[1];
1272 v2->dindex = le16_to_cpu(*(u_short *)(p+2));
1273 v2->vspec8 = p[6];
1274 v2->vspec9 = p[7];
1275 v2->nhdr = p[8];
1276 p += 9;
1277 return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL);
1278}
1279
1280/*====================================================================*/
1281
1282static int parse_org(tuple_t *tuple, cistpl_org_t *org)
1283{
1284 u_char *p, *q;
1285 int i;
1286
1287 p = tuple->TupleData;
1288 q = p + tuple->TupleDataLen;
1289 if (p == q) return CS_BAD_TUPLE;
1290 org->data_org = *p;
1291 if (++p == q) return CS_BAD_TUPLE;
1292 for (i = 0; i < 30; i++) {
1293 org->desc[i] = *p;
1294 if (*p == '\0') break;
1295 if (++p == q) return CS_BAD_TUPLE;
1296 }
1297 return CS_SUCCESS;
1298}
1299
1300/*====================================================================*/
1301
1302static int parse_format(tuple_t *tuple, cistpl_format_t *fmt)
1303{
1304 u_char *p;
1305
1306 if (tuple->TupleDataLen < 10)
1307 return CS_BAD_TUPLE;
1308
1309 p = tuple->TupleData;
1310
1311 fmt->type = p[0];
1312 fmt->edc = p[1];
1313 fmt->offset = le32_to_cpu(*(u_int *)(p+2));
1314 fmt->length = le32_to_cpu(*(u_int *)(p+6));
1315
1316 return CS_SUCCESS;
1317}
1318
1319/*====================================================================*/
1320
1321int pccard_parse_tuple(tuple_t *tuple, cisparse_t *parse)
1322{
1323 int ret = CS_SUCCESS;
1324
1325 if (tuple->TupleDataLen > tuple->TupleDataMax)
1326 return CS_BAD_TUPLE;
1327 switch (tuple->TupleCode) {
1328 case CISTPL_DEVICE:
1329 case CISTPL_DEVICE_A:
1330 ret = parse_device(tuple, &parse->device);
1331 break;
1332#ifdef CONFIG_CARDBUS
1333 case CISTPL_BAR:
1334 ret = parse_bar(tuple, &parse->bar);
1335 break;
1336 case CISTPL_CONFIG_CB:
1337 ret = parse_config_cb(tuple, &parse->config);
1338 break;
1339 case CISTPL_CFTABLE_ENTRY_CB:
1340 ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb);
1341 break;
1342#endif
1343 case CISTPL_CHECKSUM:
1344 ret = parse_checksum(tuple, &parse->checksum);
1345 break;
1346 case CISTPL_LONGLINK_A:
1347 case CISTPL_LONGLINK_C:
1348 ret = parse_longlink(tuple, &parse->longlink);
1349 break;
1350 case CISTPL_LONGLINK_MFC:
1351 ret = parse_longlink_mfc(tuple, &parse->longlink_mfc);
1352 break;
1353 case CISTPL_VERS_1:
1354 ret = parse_vers_1(tuple, &parse->version_1);
1355 break;
1356 case CISTPL_ALTSTR:
1357 ret = parse_altstr(tuple, &parse->altstr);
1358 break;
1359 case CISTPL_JEDEC_A:
1360 case CISTPL_JEDEC_C:
1361 ret = parse_jedec(tuple, &parse->jedec);
1362 break;
1363 case CISTPL_MANFID:
1364 ret = parse_manfid(tuple, &parse->manfid);
1365 break;
1366 case CISTPL_FUNCID:
1367 ret = parse_funcid(tuple, &parse->funcid);
1368 break;
1369 case CISTPL_FUNCE:
1370 ret = parse_funce(tuple, &parse->funce);
1371 break;
1372 case CISTPL_CONFIG:
1373 ret = parse_config(tuple, &parse->config);
1374 break;
1375 case CISTPL_CFTABLE_ENTRY:
1376 ret = parse_cftable_entry(tuple, &parse->cftable_entry);
1377 break;
1378 case CISTPL_DEVICE_GEO:
1379 case CISTPL_DEVICE_GEO_A:
1380 ret = parse_device_geo(tuple, &parse->device_geo);
1381 break;
1382 case CISTPL_VERS_2:
1383 ret = parse_vers_2(tuple, &parse->vers_2);
1384 break;
1385 case CISTPL_ORG:
1386 ret = parse_org(tuple, &parse->org);
1387 break;
1388 case CISTPL_FORMAT:
1389 case CISTPL_FORMAT_A:
1390 ret = parse_format(tuple, &parse->format);
1391 break;
1392 case CISTPL_NO_LINK:
1393 case CISTPL_LINKTARGET:
1394 ret = CS_SUCCESS;
1395 break;
1396 default:
1397 ret = CS_UNSUPPORTED_FUNCTION;
1398 break;
1399 }
1400 return ret;
1401}
1402EXPORT_SYMBOL(pccard_parse_tuple);
1403
1404/*======================================================================
1405
1406 This is used internally by Card Services to look up CIS stuff.
1407
1408======================================================================*/
1409
1410int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse)
1411{
1412 tuple_t tuple;
1413 cisdata_t *buf;
1414 int ret;
1415
1416 buf = kmalloc(256, GFP_KERNEL);
1417 if (buf == NULL)
1418 return CS_OUT_OF_RESOURCE;
1419 tuple.DesiredTuple = code;
1420 tuple.Attributes = TUPLE_RETURN_COMMON;
1421 ret = pccard_get_first_tuple(s, function, &tuple);
1422 if (ret != CS_SUCCESS) goto done;
1423 tuple.TupleData = buf;
1424 tuple.TupleOffset = 0;
1425 tuple.TupleDataMax = 255;
1426 ret = pccard_get_tuple_data(s, &tuple);
1427 if (ret != CS_SUCCESS) goto done;
1428 ret = pccard_parse_tuple(&tuple, parse);
1429done:
1430 kfree(buf);
1431 return ret;
1432}
1433EXPORT_SYMBOL(pccard_read_tuple);
1434
1435/*======================================================================
1436
1437 This tries to determine if a card has a sensible CIS. It returns
1438 the number of tuples in the CIS, or 0 if the CIS looks bad. The
1439 checks include making sure several critical tuples are present and
1440 valid; seeing if the total number of tuples is reasonable; and
1441 looking for tuples that use reserved codes.
1442
1443======================================================================*/
1444
1445int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, cisinfo_t *info)
1446{
1447 tuple_t *tuple;
1448 cisparse_t *p;
1449 int ret, reserved, dev_ok = 0, ident_ok = 0;
1450
1451 if (!s)
1452 return CS_BAD_HANDLE;
1453
1454 tuple = kmalloc(sizeof(*tuple), GFP_KERNEL);
1455 if (tuple == NULL)
1456 return CS_OUT_OF_RESOURCE;
1457 p = kmalloc(sizeof(*p), GFP_KERNEL);
1458 if (p == NULL) {
1459 kfree(tuple);
1460 return CS_OUT_OF_RESOURCE;
1461 }
1462
1463 info->Chains = reserved = 0;
1464 tuple->DesiredTuple = RETURN_FIRST_TUPLE;
1465 tuple->Attributes = TUPLE_RETURN_COMMON;
1466 ret = pccard_get_first_tuple(s, function, tuple);
1467 if (ret != CS_SUCCESS)
1468 goto done;
1469
1470 /* First tuple should be DEVICE; we should really have either that
1471 or a CFTABLE_ENTRY of some sort */
1472 if ((tuple->TupleCode == CISTPL_DEVICE) ||
1473 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY, p) == CS_SUCCESS) ||
1474 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY_CB, p) == CS_SUCCESS))
1475 dev_ok++;
1476
1477 /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
1478 tuple, for card identification. Certain old D-Link and Linksys
1479 cards have only a broken VERS_2 tuple; hence the bogus test. */
1480 if ((pccard_read_tuple(s, function, CISTPL_MANFID, p) == CS_SUCCESS) ||
1481 (pccard_read_tuple(s, function, CISTPL_VERS_1, p) == CS_SUCCESS) ||
1482 (pccard_read_tuple(s, function, CISTPL_VERS_2, p) != CS_NO_MORE_ITEMS))
1483 ident_ok++;
1484
1485 if (!dev_ok && !ident_ok)
1486 goto done;
1487
1488 for (info->Chains = 1; info->Chains < MAX_TUPLES; info->Chains++) {
1489 ret = pccard_get_next_tuple(s, function, tuple);
1490 if (ret != CS_SUCCESS) break;
1491 if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) ||
1492 ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) ||
1493 ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff)))
1494 reserved++;
1495 }
1496 if ((info->Chains == MAX_TUPLES) || (reserved > 5) ||
1497 ((!dev_ok || !ident_ok) && (info->Chains > 10)))
1498 info->Chains = 0;
1499
1500done:
1501 kfree(tuple);
1502 kfree(p);
1503 return CS_SUCCESS;
1504}
1505EXPORT_SYMBOL(pccard_validate_cis);