Commit | Line | Data |
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1da177e4 LT |
1 | /* |
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 | ||
1da177e4 LT |
15 | #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> | |
1da177e4 LT |
24 | #include <linux/pci.h> |
25 | #include <linux/ioport.h> | |
9fea84f4 | 26 | #include <linux/io.h> |
1da177e4 | 27 | #include <asm/byteorder.h> |
dc0cf6a2 | 28 | #include <asm/unaligned.h> |
1da177e4 LT |
29 | |
30 | #include <pcmcia/cs_types.h> | |
31 | #include <pcmcia/ss.h> | |
32 | #include <pcmcia/cs.h> | |
1da177e4 LT |
33 | #include <pcmcia/cisreg.h> |
34 | #include <pcmcia/cistpl.h> | |
35 | #include "cs_internal.h" | |
36 | ||
37 | static const u_char mantissa[] = { | |
38 | 10, 12, 13, 15, 20, 25, 30, 35, | |
39 | 40, 45, 50, 55, 60, 70, 80, 90 | |
40 | }; | |
41 | ||
42 | static 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 | ||
37f77955 PM |
61 | /* 16-bit CIS? */ |
62 | static int cis_width; | |
63 | module_param(cis_width, int, 0444); | |
1da177e4 LT |
64 | |
65 | void 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 | } | |
1da177e4 LT |
79 | |
80 | /* | |
81 | * Map the card memory at "card_offset" into virtual space. | |
82 | * If flags & MAP_ATTRIB, map the attribute space, otherwise | |
83 | * map the memory space. | |
84 | */ | |
85 | static void __iomem * | |
86 | set_cis_map(struct pcmcia_socket *s, unsigned int card_offset, unsigned int flags) | |
87 | { | |
2e5a3e79 DB |
88 | pccard_mem_map *mem = &s->cis_mem; |
89 | int ret; | |
90 | ||
91 | if (!(s->features & SS_CAP_STATIC_MAP) && (mem->res == NULL)) { | |
92 | mem->res = pcmcia_find_mem_region(0, s->map_size, s->map_size, 0, s); | |
93 | if (mem->res == NULL) { | |
2e55bf6b DB |
94 | dev_printk(KERN_NOTICE, &s->dev, |
95 | "cs: unable to map card memory!\n"); | |
2e5a3e79 DB |
96 | return NULL; |
97 | } | |
98 | s->cis_virt = NULL; | |
1da177e4 | 99 | } |
2ad0a0a7 | 100 | |
2e5a3e79 DB |
101 | 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; | |
1da177e4 LT |
121 | } |
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. | |
9fea84f4 | 127 | |
1da177e4 LT |
128 | ======================================================================*/ |
129 | ||
130 | /* Bits in attr field */ | |
131 | #define IS_ATTR 1 | |
132 | #define IS_INDIRECT 8 | |
133 | ||
e6ea0b9e | 134 | int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, |
1da177e4 LT |
135 | u_int len, void *ptr) |
136 | { | |
137 | void __iomem *sys, *end; | |
138 | unsigned char *buf = ptr; | |
9fea84f4 | 139 | |
d50dbec3 | 140 | dev_dbg(&s->dev, "pcmcia_read_cis_mem(%d, %#x, %u)\n", attr, addr, len); |
1da177e4 LT |
141 | |
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 | } | |
d50dbec3 | 192 | dev_dbg(&s->dev, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n", |
1da177e4 LT |
193 | *(u_char *)(ptr+0), *(u_char *)(ptr+1), |
194 | *(u_char *)(ptr+2), *(u_char *)(ptr+3)); | |
195 | return 0; | |
196 | } | |
1a8d4663 | 197 | |
1da177e4 | 198 | |
e6ea0b9e | 199 | void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, |
1da177e4 LT |
200 | u_int len, void *ptr) |
201 | { | |
202 | void __iomem *sys, *end; | |
203 | unsigned char *buf = ptr; | |
9fea84f4 | 204 | |
d50dbec3 | 205 | dev_dbg(&s->dev, "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr, addr, len); |
1da177e4 LT |
206 | |
207 | if (attr & IS_INDIRECT) { | |
208 | /* Indirect accesses use a bunch of special registers at fixed | |
209 | locations in common memory */ | |
210 | u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN; | |
211 | if (attr & IS_ATTR) { | |
212 | addr *= 2; | |
213 | flags = ICTRL0_AUTOINC; | |
214 | } | |
215 | ||
216 | sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0)); | |
217 | if (!sys) | |
218 | return; /* FIXME: Error */ | |
219 | ||
220 | writeb(flags, sys+CISREG_ICTRL0); | |
221 | writeb(addr & 0xff, sys+CISREG_IADDR0); | |
222 | writeb((addr>>8) & 0xff, sys+CISREG_IADDR1); | |
223 | writeb((addr>>16) & 0xff, sys+CISREG_IADDR2); | |
224 | writeb((addr>>24) & 0xff, sys+CISREG_IADDR3); | |
225 | for ( ; len > 0; len--, buf++) | |
226 | writeb(*buf, sys+CISREG_IDATA0); | |
227 | } else { | |
228 | u_int inc = 1, card_offset, flags; | |
229 | ||
230 | flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0); | |
231 | if (attr & IS_ATTR) { | |
232 | flags |= MAP_ATTRIB; | |
233 | inc++; | |
234 | addr *= 2; | |
235 | } | |
236 | ||
237 | card_offset = addr & ~(s->map_size-1); | |
238 | while (len) { | |
239 | sys = set_cis_map(s, card_offset, flags); | |
240 | if (!sys) | |
241 | return; /* FIXME: error */ | |
242 | ||
243 | end = sys + s->map_size; | |
244 | sys = sys + (addr & (s->map_size-1)); | |
245 | for ( ; len > 0; len--, buf++, sys += inc) { | |
246 | if (sys == end) | |
247 | break; | |
248 | writeb(*buf, sys); | |
249 | } | |
250 | card_offset += s->map_size; | |
251 | addr = 0; | |
252 | } | |
253 | } | |
254 | } | |
1a8d4663 | 255 | |
1da177e4 LT |
256 | |
257 | /*====================================================================== | |
258 | ||
259 | This is a wrapper around read_cis_mem, with the same interface, | |
260 | but which caches information, for cards whose CIS may not be | |
261 | readable all the time. | |
9fea84f4 | 262 | |
1da177e4 LT |
263 | ======================================================================*/ |
264 | ||
265 | static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, | |
53efec95 | 266 | size_t len, void *ptr) |
1da177e4 | 267 | { |
57197b9b DB |
268 | struct cis_cache_entry *cis; |
269 | int ret; | |
1da177e4 | 270 | |
57197b9b DB |
271 | if (s->state & SOCKET_CARDBUS) |
272 | return; | |
1da177e4 | 273 | |
57197b9b DB |
274 | if (s->fake_cis) { |
275 | if (s->fake_cis_len >= addr+len) | |
276 | memcpy(ptr, s->fake_cis+addr, len); | |
277 | else | |
278 | memset(ptr, 0xff, len); | |
279 | return; | |
280 | } | |
281 | ||
282 | list_for_each_entry(cis, &s->cis_cache, node) { | |
283 | if (cis->addr == addr && cis->len == len && cis->attr == attr) { | |
284 | memcpy(ptr, cis->cache, len); | |
285 | return; | |
286 | } | |
1da177e4 | 287 | } |
1da177e4 | 288 | |
e6ea0b9e | 289 | ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr); |
1da177e4 LT |
290 | |
291 | if (ret == 0) { | |
292 | /* Copy data into the cache */ | |
293 | cis = kmalloc(sizeof(struct cis_cache_entry) + len, GFP_KERNEL); | |
294 | if (cis) { | |
295 | cis->addr = addr; | |
296 | cis->len = len; | |
297 | cis->attr = attr; | |
298 | memcpy(cis->cache, ptr, len); | |
299 | list_add(&cis->node, &s->cis_cache); | |
300 | } | |
301 | } | |
302 | } | |
303 | ||
304 | static void | |
305 | remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len) | |
306 | { | |
307 | struct cis_cache_entry *cis; | |
308 | ||
309 | list_for_each_entry(cis, &s->cis_cache, node) | |
310 | if (cis->addr == addr && cis->len == len && cis->attr == attr) { | |
311 | list_del(&cis->node); | |
312 | kfree(cis); | |
313 | break; | |
314 | } | |
315 | } | |
316 | ||
904e3777 DB |
317 | /** |
318 | * destroy_cis_cache() - destroy the CIS cache | |
319 | * @s: pcmcia_socket for which CIS cache shall be destroyed | |
320 | * | |
321 | * This destroys the CIS cache but keeps any fake CIS alive. | |
322 | */ | |
323 | ||
1da177e4 LT |
324 | void destroy_cis_cache(struct pcmcia_socket *s) |
325 | { | |
326 | struct list_head *l, *n; | |
904e3777 | 327 | struct cis_cache_entry *cis; |
1da177e4 LT |
328 | |
329 | list_for_each_safe(l, n, &s->cis_cache) { | |
904e3777 | 330 | cis = list_entry(l, struct cis_cache_entry, node); |
1da177e4 LT |
331 | list_del(&cis->node); |
332 | kfree(cis); | |
333 | } | |
1da177e4 | 334 | } |
1da177e4 LT |
335 | |
336 | /*====================================================================== | |
337 | ||
338 | This verifies if the CIS of a card matches what is in the CIS | |
339 | cache. | |
9fea84f4 | 340 | |
1da177e4 LT |
341 | ======================================================================*/ |
342 | ||
343 | int verify_cis_cache(struct pcmcia_socket *s) | |
344 | { | |
345 | struct cis_cache_entry *cis; | |
346 | char *buf; | |
347 | ||
57197b9b DB |
348 | if (s->state & SOCKET_CARDBUS) |
349 | return -EINVAL; | |
350 | ||
1da177e4 | 351 | buf = kmalloc(256, GFP_KERNEL); |
e689597f | 352 | if (buf == NULL) { |
1168386a DB |
353 | dev_printk(KERN_WARNING, &s->dev, |
354 | "no memory for verifying CIS\n"); | |
355 | return -ENOMEM; | |
e689597f | 356 | } |
1da177e4 LT |
357 | list_for_each_entry(cis, &s->cis_cache, node) { |
358 | int len = cis->len; | |
359 | ||
360 | if (len > 256) | |
361 | len = 256; | |
57197b9b DB |
362 | |
363 | pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf); | |
1da177e4 LT |
364 | |
365 | if (memcmp(buf, cis->cache, len) != 0) { | |
366 | kfree(buf); | |
367 | return -1; | |
368 | } | |
369 | } | |
370 | kfree(buf); | |
371 | return 0; | |
372 | } | |
373 | ||
374 | /*====================================================================== | |
375 | ||
376 | For really bad cards, we provide a facility for uploading a | |
377 | replacement CIS. | |
9fea84f4 | 378 | |
1da177e4 LT |
379 | ======================================================================*/ |
380 | ||
53efec95 DB |
381 | int pcmcia_replace_cis(struct pcmcia_socket *s, |
382 | const u8 *data, const size_t len) | |
1da177e4 | 383 | { |
1168386a DB |
384 | if (len > CISTPL_MAX_CIS_SIZE) { |
385 | dev_printk(KERN_WARNING, &s->dev, "replacement CIS too big\n"); | |
386 | return -EINVAL; | |
387 | } | |
388 | kfree(s->fake_cis); | |
389 | s->fake_cis = kmalloc(len, GFP_KERNEL); | |
390 | if (s->fake_cis == NULL) { | |
391 | dev_printk(KERN_WARNING, &s->dev, "no memory to replace CIS\n"); | |
392 | return -ENOMEM; | |
393 | } | |
394 | s->fake_cis_len = len; | |
395 | memcpy(s->fake_cis, data, len); | |
396 | return 0; | |
1da177e4 LT |
397 | } |
398 | ||
399 | /*====================================================================== | |
400 | ||
401 | The high-level CIS tuple services | |
9fea84f4 | 402 | |
1da177e4 LT |
403 | ======================================================================*/ |
404 | ||
405 | typedef struct tuple_flags { | |
406 | u_int link_space:4; | |
407 | u_int has_link:1; | |
408 | u_int mfc_fn:3; | |
409 | u_int space:4; | |
410 | } tuple_flags; | |
411 | ||
412 | #define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space) | |
413 | #define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link) | |
414 | #define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn) | |
415 | #define SPACE(f) (((tuple_flags *)(&(f)))->space) | |
416 | ||
1da177e4 LT |
417 | int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple) |
418 | { | |
419 | if (!s) | |
ffb8da20 | 420 | return -EINVAL; |
57197b9b DB |
421 | |
422 | if (!(s->state & SOCKET_PRESENT) || (s->state & SOCKET_CARDBUS)) | |
3939c1ef | 423 | return -ENODEV; |
1da177e4 | 424 | tuple->TupleLink = tuple->Flags = 0; |
57197b9b DB |
425 | |
426 | /* Assume presence of a LONGLINK_C to address 0 */ | |
427 | tuple->CISOffset = tuple->LinkOffset = 0; | |
428 | SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1; | |
429 | ||
430 | if ((s->functions > 1) && !(tuple->Attributes & TUPLE_RETURN_COMMON)) { | |
1da177e4 LT |
431 | cisdata_t req = tuple->DesiredTuple; |
432 | tuple->DesiredTuple = CISTPL_LONGLINK_MFC; | |
4c89e88b | 433 | if (pccard_get_next_tuple(s, function, tuple) == 0) { |
1da177e4 | 434 | tuple->DesiredTuple = CISTPL_LINKTARGET; |
4c89e88b | 435 | if (pccard_get_next_tuple(s, function, tuple) != 0) |
635d19be | 436 | return -ENOSPC; |
1da177e4 LT |
437 | } else |
438 | tuple->CISOffset = tuple->TupleLink = 0; | |
439 | tuple->DesiredTuple = req; | |
440 | } | |
441 | return pccard_get_next_tuple(s, function, tuple); | |
442 | } | |
1da177e4 LT |
443 | |
444 | static int follow_link(struct pcmcia_socket *s, tuple_t *tuple) | |
445 | { | |
446 | u_char link[5]; | |
447 | u_int ofs; | |
448 | ||
449 | if (MFC_FN(tuple->Flags)) { | |
450 | /* Get indirect link from the MFC tuple */ | |
451 | read_cis_cache(s, LINK_SPACE(tuple->Flags), | |
452 | tuple->LinkOffset, 5, link); | |
6b1e6f63 | 453 | ofs = get_unaligned_le32(link + 1); |
1da177e4 LT |
454 | SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR); |
455 | /* Move to the next indirect link */ | |
456 | tuple->LinkOffset += 5; | |
457 | MFC_FN(tuple->Flags)--; | |
458 | } else if (HAS_LINK(tuple->Flags)) { | |
459 | ofs = tuple->LinkOffset; | |
460 | SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags); | |
461 | HAS_LINK(tuple->Flags) = 0; | |
462 | } else { | |
463 | return -1; | |
464 | } | |
57197b9b | 465 | if (SPACE(tuple->Flags)) { |
1da177e4 LT |
466 | /* This is ugly, but a common CIS error is to code the long |
467 | link offset incorrectly, so we check the right spot... */ | |
468 | read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link); | |
469 | if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) && | |
470 | (strncmp(link+2, "CIS", 3) == 0)) | |
471 | return ofs; | |
472 | remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5); | |
473 | /* Then, we try the wrong spot... */ | |
474 | ofs = ofs >> 1; | |
475 | } | |
476 | read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link); | |
477 | if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) && | |
478 | (strncmp(link+2, "CIS", 3) == 0)) | |
479 | return ofs; | |
480 | remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5); | |
481 | return -1; | |
482 | } | |
483 | ||
484 | int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple) | |
485 | { | |
486 | u_char link[2], tmp; | |
487 | int ofs, i, attr; | |
488 | ||
489 | if (!s) | |
ffb8da20 | 490 | return -EINVAL; |
57197b9b | 491 | if (!(s->state & SOCKET_PRESENT) || (s->state & SOCKET_CARDBUS)) |
3939c1ef | 492 | return -ENODEV; |
1da177e4 LT |
493 | |
494 | link[1] = tuple->TupleLink; | |
495 | ofs = tuple->CISOffset + tuple->TupleLink; | |
496 | attr = SPACE(tuple->Flags); | |
497 | ||
498 | for (i = 0; i < MAX_TUPLES; i++) { | |
499 | if (link[1] == 0xff) { | |
500 | link[0] = CISTPL_END; | |
501 | } else { | |
502 | read_cis_cache(s, attr, ofs, 2, link); | |
503 | if (link[0] == CISTPL_NULL) { | |
504 | ofs++; continue; | |
505 | } | |
506 | } | |
9fea84f4 | 507 | |
1da177e4 LT |
508 | /* End of chain? Follow long link if possible */ |
509 | if (link[0] == CISTPL_END) { | |
9fea84f4 DB |
510 | ofs = follow_link(s, tuple); |
511 | if (ofs < 0) | |
635d19be | 512 | return -ENOSPC; |
1da177e4 LT |
513 | attr = SPACE(tuple->Flags); |
514 | read_cis_cache(s, attr, ofs, 2, link); | |
515 | } | |
516 | ||
517 | /* Is this a link tuple? Make a note of it */ | |
518 | if ((link[0] == CISTPL_LONGLINK_A) || | |
519 | (link[0] == CISTPL_LONGLINK_C) || | |
520 | (link[0] == CISTPL_LONGLINK_MFC) || | |
521 | (link[0] == CISTPL_LINKTARGET) || | |
522 | (link[0] == CISTPL_INDIRECT) || | |
523 | (link[0] == CISTPL_NO_LINK)) { | |
524 | switch (link[0]) { | |
525 | case CISTPL_LONGLINK_A: | |
526 | HAS_LINK(tuple->Flags) = 1; | |
527 | LINK_SPACE(tuple->Flags) = attr | IS_ATTR; | |
528 | read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset); | |
529 | break; | |
530 | case CISTPL_LONGLINK_C: | |
531 | HAS_LINK(tuple->Flags) = 1; | |
532 | LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR; | |
533 | read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset); | |
534 | break; | |
535 | case CISTPL_INDIRECT: | |
536 | HAS_LINK(tuple->Flags) = 1; | |
537 | LINK_SPACE(tuple->Flags) = IS_ATTR | IS_INDIRECT; | |
538 | tuple->LinkOffset = 0; | |
539 | break; | |
540 | case CISTPL_LONGLINK_MFC: | |
541 | tuple->LinkOffset = ofs + 3; | |
542 | LINK_SPACE(tuple->Flags) = attr; | |
543 | if (function == BIND_FN_ALL) { | |
544 | /* Follow all the MFC links */ | |
545 | read_cis_cache(s, attr, ofs+2, 1, &tmp); | |
546 | MFC_FN(tuple->Flags) = tmp; | |
547 | } else { | |
548 | /* Follow exactly one of the links */ | |
549 | MFC_FN(tuple->Flags) = 1; | |
550 | tuple->LinkOffset += function * 5; | |
551 | } | |
552 | break; | |
553 | case CISTPL_NO_LINK: | |
554 | HAS_LINK(tuple->Flags) = 0; | |
555 | break; | |
556 | } | |
557 | if ((tuple->Attributes & TUPLE_RETURN_LINK) && | |
558 | (tuple->DesiredTuple == RETURN_FIRST_TUPLE)) | |
559 | break; | |
560 | } else | |
561 | if (tuple->DesiredTuple == RETURN_FIRST_TUPLE) | |
562 | break; | |
9fea84f4 | 563 | |
1da177e4 LT |
564 | if (link[0] == tuple->DesiredTuple) |
565 | break; | |
566 | ofs += link[1] + 2; | |
567 | } | |
568 | if (i == MAX_TUPLES) { | |
d50dbec3 | 569 | dev_dbg(&s->dev, "cs: overrun in pcmcia_get_next_tuple\n"); |
635d19be | 570 | return -ENOSPC; |
1da177e4 | 571 | } |
9fea84f4 | 572 | |
1da177e4 LT |
573 | tuple->TupleCode = link[0]; |
574 | tuple->TupleLink = link[1]; | |
575 | tuple->CISOffset = ofs + 2; | |
4c89e88b | 576 | return 0; |
1da177e4 | 577 | } |
1da177e4 LT |
578 | |
579 | /*====================================================================*/ | |
580 | ||
581 | #define _MIN(a, b) (((a) < (b)) ? (a) : (b)) | |
582 | ||
583 | int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple) | |
584 | { | |
585 | u_int len; | |
586 | ||
587 | if (!s) | |
ffb8da20 | 588 | return -EINVAL; |
1da177e4 LT |
589 | |
590 | if (tuple->TupleLink < tuple->TupleOffset) | |
635d19be | 591 | return -ENOSPC; |
1da177e4 LT |
592 | len = tuple->TupleLink - tuple->TupleOffset; |
593 | tuple->TupleDataLen = tuple->TupleLink; | |
594 | if (len == 0) | |
4c89e88b | 595 | return 0; |
1da177e4 LT |
596 | read_cis_cache(s, SPACE(tuple->Flags), |
597 | tuple->CISOffset + tuple->TupleOffset, | |
598 | _MIN(len, tuple->TupleDataMax), tuple->TupleData); | |
4c89e88b | 599 | return 0; |
1da177e4 | 600 | } |
1da177e4 LT |
601 | |
602 | ||
603 | /*====================================================================== | |
604 | ||
605 | Parsing routines for individual tuples | |
9fea84f4 | 606 | |
1da177e4 LT |
607 | ======================================================================*/ |
608 | ||
609 | static int parse_device(tuple_t *tuple, cistpl_device_t *device) | |
610 | { | |
611 | int i; | |
612 | u_char scale; | |
613 | u_char *p, *q; | |
614 | ||
615 | p = (u_char *)tuple->TupleData; | |
616 | q = p + tuple->TupleDataLen; | |
617 | ||
618 | device->ndev = 0; | |
619 | for (i = 0; i < CISTPL_MAX_DEVICES; i++) { | |
9fea84f4 DB |
620 | |
621 | if (*p == 0xff) | |
622 | break; | |
1da177e4 LT |
623 | device->dev[i].type = (*p >> 4); |
624 | device->dev[i].wp = (*p & 0x08) ? 1 : 0; | |
625 | switch (*p & 0x07) { | |
9fea84f4 DB |
626 | case 0: |
627 | device->dev[i].speed = 0; | |
628 | break; | |
629 | case 1: | |
630 | device->dev[i].speed = 250; | |
631 | break; | |
632 | case 2: | |
633 | device->dev[i].speed = 200; | |
634 | break; | |
635 | case 3: | |
636 | device->dev[i].speed = 150; | |
637 | break; | |
638 | case 4: | |
639 | device->dev[i].speed = 100; | |
640 | break; | |
1da177e4 | 641 | case 7: |
3f9c5f4c DB |
642 | if (++p == q) |
643 | return -EINVAL; | |
9fea84f4 DB |
644 | device->dev[i].speed = SPEED_CVT(*p); |
645 | while (*p & 0x80) | |
646 | if (++p == q) | |
647 | return -EINVAL; | |
648 | break; | |
1da177e4 | 649 | default: |
9fea84f4 | 650 | return -EINVAL; |
1da177e4 LT |
651 | } |
652 | ||
3f9c5f4c DB |
653 | if (++p == q) |
654 | return -EINVAL; | |
655 | if (*p == 0xff) | |
656 | break; | |
1da177e4 | 657 | scale = *p & 7; |
3f9c5f4c DB |
658 | if (scale == 7) |
659 | return -EINVAL; | |
1da177e4 LT |
660 | device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2)); |
661 | device->ndev++; | |
3f9c5f4c DB |
662 | if (++p == q) |
663 | break; | |
1da177e4 | 664 | } |
9fea84f4 | 665 | |
4c89e88b | 666 | return 0; |
1da177e4 LT |
667 | } |
668 | ||
669 | /*====================================================================*/ | |
670 | ||
671 | static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum) | |
672 | { | |
673 | u_char *p; | |
674 | if (tuple->TupleDataLen < 5) | |
3f9c5f4c | 675 | return -EINVAL; |
dc0cf6a2 | 676 | p = (u_char *) tuple->TupleData; |
6b1e6f63 HH |
677 | csum->addr = tuple->CISOffset + get_unaligned_le16(p) - 2; |
678 | csum->len = get_unaligned_le16(p + 2); | |
dc0cf6a2 | 679 | csum->sum = *(p + 4); |
4c89e88b | 680 | return 0; |
1da177e4 LT |
681 | } |
682 | ||
683 | /*====================================================================*/ | |
684 | ||
685 | static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link) | |
686 | { | |
687 | if (tuple->TupleDataLen < 4) | |
3f9c5f4c | 688 | return -EINVAL; |
6b1e6f63 | 689 | link->addr = get_unaligned_le32(tuple->TupleData); |
4c89e88b | 690 | return 0; |
1da177e4 LT |
691 | } |
692 | ||
693 | /*====================================================================*/ | |
694 | ||
695 | static int parse_longlink_mfc(tuple_t *tuple, | |
696 | cistpl_longlink_mfc_t *link) | |
697 | { | |
698 | u_char *p; | |
699 | int i; | |
9fea84f4 | 700 | |
1da177e4 | 701 | p = (u_char *)tuple->TupleData; |
9fea84f4 | 702 | |
1da177e4 LT |
703 | link->nfn = *p; p++; |
704 | if (tuple->TupleDataLen <= link->nfn*5) | |
3f9c5f4c | 705 | return -EINVAL; |
1da177e4 LT |
706 | for (i = 0; i < link->nfn; i++) { |
707 | link->fn[i].space = *p; p++; | |
6b1e6f63 | 708 | link->fn[i].addr = get_unaligned_le32(p); |
dc0cf6a2 | 709 | p += 4; |
1da177e4 | 710 | } |
4c89e88b | 711 | return 0; |
1da177e4 LT |
712 | } |
713 | ||
714 | /*====================================================================*/ | |
715 | ||
716 | static int parse_strings(u_char *p, u_char *q, int max, | |
717 | char *s, u_char *ofs, u_char *found) | |
718 | { | |
719 | int i, j, ns; | |
720 | ||
3f9c5f4c DB |
721 | if (p == q) |
722 | return -EINVAL; | |
1da177e4 LT |
723 | ns = 0; j = 0; |
724 | for (i = 0; i < max; i++) { | |
3f9c5f4c DB |
725 | if (*p == 0xff) |
726 | break; | |
1da177e4 LT |
727 | ofs[i] = j; |
728 | ns++; | |
729 | for (;;) { | |
730 | s[j++] = (*p == 0xff) ? '\0' : *p; | |
9fea84f4 DB |
731 | if ((*p == '\0') || (*p == 0xff)) |
732 | break; | |
3f9c5f4c DB |
733 | if (++p == q) |
734 | return -EINVAL; | |
1da177e4 | 735 | } |
9fea84f4 DB |
736 | if ((*p == 0xff) || (++p == q)) |
737 | break; | |
1da177e4 LT |
738 | } |
739 | if (found) { | |
740 | *found = ns; | |
4c89e88b | 741 | return 0; |
1da177e4 | 742 | } else { |
3f9c5f4c | 743 | return (ns == max) ? 0 : -EINVAL; |
1da177e4 LT |
744 | } |
745 | } | |
746 | ||
747 | /*====================================================================*/ | |
748 | ||
749 | static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1) | |
750 | { | |
751 | u_char *p, *q; | |
9fea84f4 | 752 | |
1da177e4 LT |
753 | p = (u_char *)tuple->TupleData; |
754 | q = p + tuple->TupleDataLen; | |
9fea84f4 | 755 | |
1da177e4 LT |
756 | vers_1->major = *p; p++; |
757 | vers_1->minor = *p; p++; | |
3f9c5f4c DB |
758 | if (p >= q) |
759 | return -EINVAL; | |
1da177e4 LT |
760 | |
761 | return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS, | |
762 | vers_1->str, vers_1->ofs, &vers_1->ns); | |
763 | } | |
764 | ||
765 | /*====================================================================*/ | |
766 | ||
767 | static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr) | |
768 | { | |
769 | u_char *p, *q; | |
9fea84f4 | 770 | |
1da177e4 LT |
771 | p = (u_char *)tuple->TupleData; |
772 | q = p + tuple->TupleDataLen; | |
9fea84f4 | 773 | |
1da177e4 LT |
774 | return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS, |
775 | altstr->str, altstr->ofs, &altstr->ns); | |
776 | } | |
777 | ||
778 | /*====================================================================*/ | |
779 | ||
780 | static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec) | |
781 | { | |
782 | u_char *p, *q; | |
783 | int nid; | |
784 | ||
785 | p = (u_char *)tuple->TupleData; | |
786 | q = p + tuple->TupleDataLen; | |
787 | ||
788 | for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) { | |
9fea84f4 DB |
789 | if (p > q-2) |
790 | break; | |
1da177e4 LT |
791 | jedec->id[nid].mfr = p[0]; |
792 | jedec->id[nid].info = p[1]; | |
793 | p += 2; | |
794 | } | |
795 | jedec->nid = nid; | |
4c89e88b | 796 | return 0; |
1da177e4 LT |
797 | } |
798 | ||
799 | /*====================================================================*/ | |
800 | ||
801 | static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m) | |
802 | { | |
1da177e4 | 803 | if (tuple->TupleDataLen < 4) |
3f9c5f4c | 804 | return -EINVAL; |
6b1e6f63 HH |
805 | m->manf = get_unaligned_le16(tuple->TupleData); |
806 | m->card = get_unaligned_le16(tuple->TupleData + 2); | |
4c89e88b | 807 | return 0; |
1da177e4 LT |
808 | } |
809 | ||
810 | /*====================================================================*/ | |
811 | ||
812 | static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f) | |
813 | { | |
814 | u_char *p; | |
815 | if (tuple->TupleDataLen < 2) | |
3f9c5f4c | 816 | return -EINVAL; |
1da177e4 LT |
817 | p = (u_char *)tuple->TupleData; |
818 | f->func = p[0]; | |
819 | f->sysinit = p[1]; | |
4c89e88b | 820 | return 0; |
1da177e4 LT |
821 | } |
822 | ||
823 | /*====================================================================*/ | |
824 | ||
825 | static int parse_funce(tuple_t *tuple, cistpl_funce_t *f) | |
826 | { | |
827 | u_char *p; | |
828 | int i; | |
829 | if (tuple->TupleDataLen < 1) | |
3f9c5f4c | 830 | return -EINVAL; |
1da177e4 LT |
831 | p = (u_char *)tuple->TupleData; |
832 | f->type = p[0]; | |
833 | for (i = 1; i < tuple->TupleDataLen; i++) | |
834 | f->data[i-1] = p[i]; | |
4c89e88b | 835 | return 0; |
1da177e4 LT |
836 | } |
837 | ||
838 | /*====================================================================*/ | |
839 | ||
840 | static int parse_config(tuple_t *tuple, cistpl_config_t *config) | |
841 | { | |
842 | int rasz, rmsz, i; | |
843 | u_char *p; | |
844 | ||
845 | p = (u_char *)tuple->TupleData; | |
846 | rasz = *p & 0x03; | |
847 | rmsz = (*p & 0x3c) >> 2; | |
848 | if (tuple->TupleDataLen < rasz+rmsz+4) | |
3f9c5f4c | 849 | return -EINVAL; |
1da177e4 LT |
850 | config->last_idx = *(++p); |
851 | p++; | |
852 | config->base = 0; | |
853 | for (i = 0; i <= rasz; i++) | |
854 | config->base += p[i] << (8*i); | |
855 | p += rasz+1; | |
856 | for (i = 0; i < 4; i++) | |
857 | config->rmask[i] = 0; | |
858 | for (i = 0; i <= rmsz; i++) | |
859 | config->rmask[i>>2] += p[i] << (8*(i%4)); | |
860 | config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4); | |
4c89e88b | 861 | return 0; |
1da177e4 LT |
862 | } |
863 | ||
864 | /*====================================================================== | |
865 | ||
866 | The following routines are all used to parse the nightmarish | |
867 | config table entries. | |
9fea84f4 | 868 | |
1da177e4 LT |
869 | ======================================================================*/ |
870 | ||
871 | static u_char *parse_power(u_char *p, u_char *q, | |
872 | cistpl_power_t *pwr) | |
873 | { | |
874 | int i; | |
875 | u_int scale; | |
876 | ||
9fea84f4 DB |
877 | if (p == q) |
878 | return NULL; | |
1da177e4 LT |
879 | pwr->present = *p; |
880 | pwr->flags = 0; | |
881 | p++; | |
882 | for (i = 0; i < 7; i++) | |
883 | if (pwr->present & (1<<i)) { | |
9fea84f4 DB |
884 | if (p == q) |
885 | return NULL; | |
1da177e4 LT |
886 | pwr->param[i] = POWER_CVT(*p); |
887 | scale = POWER_SCALE(*p); | |
888 | while (*p & 0x80) { | |
9fea84f4 DB |
889 | if (++p == q) |
890 | return NULL; | |
1da177e4 LT |
891 | if ((*p & 0x7f) < 100) |
892 | pwr->param[i] += (*p & 0x7f) * scale / 100; | |
893 | else if (*p == 0x7d) | |
894 | pwr->flags |= CISTPL_POWER_HIGHZ_OK; | |
895 | else if (*p == 0x7e) | |
896 | pwr->param[i] = 0; | |
897 | else if (*p == 0x7f) | |
898 | pwr->flags |= CISTPL_POWER_HIGHZ_REQ; | |
899 | else | |
900 | return NULL; | |
901 | } | |
902 | p++; | |
903 | } | |
904 | return p; | |
905 | } | |
906 | ||
907 | /*====================================================================*/ | |
908 | ||
909 | static u_char *parse_timing(u_char *p, u_char *q, | |
910 | cistpl_timing_t *timing) | |
911 | { | |
912 | u_char scale; | |
913 | ||
9fea84f4 DB |
914 | if (p == q) |
915 | return NULL; | |
1da177e4 LT |
916 | scale = *p; |
917 | if ((scale & 3) != 3) { | |
9fea84f4 DB |
918 | if (++p == q) |
919 | return NULL; | |
1da177e4 LT |
920 | timing->wait = SPEED_CVT(*p); |
921 | timing->waitscale = exponent[scale & 3]; | |
922 | } else | |
923 | timing->wait = 0; | |
924 | scale >>= 2; | |
925 | if ((scale & 7) != 7) { | |
9fea84f4 DB |
926 | if (++p == q) |
927 | return NULL; | |
1da177e4 LT |
928 | timing->ready = SPEED_CVT(*p); |
929 | timing->rdyscale = exponent[scale & 7]; | |
930 | } else | |
931 | timing->ready = 0; | |
932 | scale >>= 3; | |
933 | if (scale != 7) { | |
9fea84f4 DB |
934 | if (++p == q) |
935 | return NULL; | |
1da177e4 LT |
936 | timing->reserved = SPEED_CVT(*p); |
937 | timing->rsvscale = exponent[scale]; | |
938 | } else | |
939 | timing->reserved = 0; | |
940 | p++; | |
941 | return p; | |
942 | } | |
943 | ||
944 | /*====================================================================*/ | |
945 | ||
946 | static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io) | |
947 | { | |
948 | int i, j, bsz, lsz; | |
949 | ||
9fea84f4 DB |
950 | if (p == q) |
951 | return NULL; | |
1da177e4 LT |
952 | io->flags = *p; |
953 | ||
954 | if (!(*p & 0x80)) { | |
955 | io->nwin = 1; | |
956 | io->win[0].base = 0; | |
957 | io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK)); | |
958 | return p+1; | |
959 | } | |
9fea84f4 DB |
960 | |
961 | if (++p == q) | |
962 | return NULL; | |
1da177e4 LT |
963 | io->nwin = (*p & 0x0f) + 1; |
964 | bsz = (*p & 0x30) >> 4; | |
9fea84f4 DB |
965 | if (bsz == 3) |
966 | bsz++; | |
1da177e4 | 967 | lsz = (*p & 0xc0) >> 6; |
9fea84f4 DB |
968 | if (lsz == 3) |
969 | lsz++; | |
1da177e4 | 970 | p++; |
9fea84f4 | 971 | |
1da177e4 LT |
972 | for (i = 0; i < io->nwin; i++) { |
973 | io->win[i].base = 0; | |
974 | io->win[i].len = 1; | |
975 | for (j = 0; j < bsz; j++, p++) { | |
9fea84f4 DB |
976 | if (p == q) |
977 | return NULL; | |
1da177e4 LT |
978 | io->win[i].base += *p << (j*8); |
979 | } | |
980 | for (j = 0; j < lsz; j++, p++) { | |
9fea84f4 DB |
981 | if (p == q) |
982 | return NULL; | |
1da177e4 LT |
983 | io->win[i].len += *p << (j*8); |
984 | } | |
985 | } | |
986 | return p; | |
987 | } | |
988 | ||
989 | /*====================================================================*/ | |
990 | ||
991 | static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem) | |
992 | { | |
993 | int i, j, asz, lsz, has_ha; | |
994 | u_int len, ca, ha; | |
995 | ||
9fea84f4 DB |
996 | if (p == q) |
997 | return NULL; | |
1da177e4 LT |
998 | |
999 | mem->nwin = (*p & 0x07) + 1; | |
1000 | lsz = (*p & 0x18) >> 3; | |
1001 | asz = (*p & 0x60) >> 5; | |
1002 | has_ha = (*p & 0x80); | |
9fea84f4 DB |
1003 | if (++p == q) |
1004 | return NULL; | |
1005 | ||
1da177e4 LT |
1006 | for (i = 0; i < mem->nwin; i++) { |
1007 | len = ca = ha = 0; | |
1008 | for (j = 0; j < lsz; j++, p++) { | |
9fea84f4 DB |
1009 | if (p == q) |
1010 | return NULL; | |
1da177e4 LT |
1011 | len += *p << (j*8); |
1012 | } | |
1013 | for (j = 0; j < asz; j++, p++) { | |
9fea84f4 DB |
1014 | if (p == q) |
1015 | return NULL; | |
1da177e4 LT |
1016 | ca += *p << (j*8); |
1017 | } | |
1018 | if (has_ha) | |
1019 | for (j = 0; j < asz; j++, p++) { | |
9fea84f4 DB |
1020 | if (p == q) |
1021 | return NULL; | |
1da177e4 LT |
1022 | ha += *p << (j*8); |
1023 | } | |
1024 | mem->win[i].len = len << 8; | |
1025 | mem->win[i].card_addr = ca << 8; | |
1026 | mem->win[i].host_addr = ha << 8; | |
1027 | } | |
1028 | return p; | |
1029 | } | |
1030 | ||
1031 | /*====================================================================*/ | |
1032 | ||
1033 | static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq) | |
1034 | { | |
3f9c5f4c DB |
1035 | if (p == q) |
1036 | return NULL; | |
1da177e4 LT |
1037 | irq->IRQInfo1 = *p; p++; |
1038 | if (irq->IRQInfo1 & IRQ_INFO2_VALID) { | |
3f9c5f4c DB |
1039 | if (p+2 > q) |
1040 | return NULL; | |
1da177e4 LT |
1041 | irq->IRQInfo2 = (p[1]<<8) + p[0]; |
1042 | p += 2; | |
1043 | } | |
1044 | return p; | |
1045 | } | |
1046 | ||
1047 | /*====================================================================*/ | |
1048 | ||
1049 | static int parse_cftable_entry(tuple_t *tuple, | |
1050 | cistpl_cftable_entry_t *entry) | |
1051 | { | |
1052 | u_char *p, *q, features; | |
1053 | ||
1054 | p = tuple->TupleData; | |
1055 | q = p + tuple->TupleDataLen; | |
1056 | entry->index = *p & 0x3f; | |
1057 | entry->flags = 0; | |
1058 | if (*p & 0x40) | |
1059 | entry->flags |= CISTPL_CFTABLE_DEFAULT; | |
1060 | if (*p & 0x80) { | |
3f9c5f4c DB |
1061 | if (++p == q) |
1062 | return -EINVAL; | |
1da177e4 LT |
1063 | if (*p & 0x10) |
1064 | entry->flags |= CISTPL_CFTABLE_BVDS; | |
1065 | if (*p & 0x20) | |
1066 | entry->flags |= CISTPL_CFTABLE_WP; | |
1067 | if (*p & 0x40) | |
1068 | entry->flags |= CISTPL_CFTABLE_RDYBSY; | |
1069 | if (*p & 0x80) | |
1070 | entry->flags |= CISTPL_CFTABLE_MWAIT; | |
1071 | entry->interface = *p & 0x0f; | |
1072 | } else | |
1073 | entry->interface = 0; | |
1074 | ||
1075 | /* Process optional features */ | |
3f9c5f4c DB |
1076 | if (++p == q) |
1077 | return -EINVAL; | |
1da177e4 LT |
1078 | features = *p; p++; |
1079 | ||
1080 | /* Power options */ | |
1081 | if ((features & 3) > 0) { | |
1082 | p = parse_power(p, q, &entry->vcc); | |
3f9c5f4c DB |
1083 | if (p == NULL) |
1084 | return -EINVAL; | |
1da177e4 LT |
1085 | } else |
1086 | entry->vcc.present = 0; | |
1087 | if ((features & 3) > 1) { | |
1088 | p = parse_power(p, q, &entry->vpp1); | |
3f9c5f4c DB |
1089 | if (p == NULL) |
1090 | return -EINVAL; | |
1da177e4 LT |
1091 | } else |
1092 | entry->vpp1.present = 0; | |
1093 | if ((features & 3) > 2) { | |
1094 | p = parse_power(p, q, &entry->vpp2); | |
3f9c5f4c DB |
1095 | if (p == NULL) |
1096 | return -EINVAL; | |
1da177e4 LT |
1097 | } else |
1098 | entry->vpp2.present = 0; | |
1099 | ||
1100 | /* Timing options */ | |
1101 | if (features & 0x04) { | |
1102 | p = parse_timing(p, q, &entry->timing); | |
3f9c5f4c DB |
1103 | if (p == NULL) |
1104 | return -EINVAL; | |
1da177e4 LT |
1105 | } else { |
1106 | entry->timing.wait = 0; | |
1107 | entry->timing.ready = 0; | |
1108 | entry->timing.reserved = 0; | |
1109 | } | |
9fea84f4 | 1110 | |
1da177e4 LT |
1111 | /* I/O window options */ |
1112 | if (features & 0x08) { | |
1113 | p = parse_io(p, q, &entry->io); | |
3f9c5f4c DB |
1114 | if (p == NULL) |
1115 | return -EINVAL; | |
1da177e4 LT |
1116 | } else |
1117 | entry->io.nwin = 0; | |
9fea84f4 | 1118 | |
1da177e4 LT |
1119 | /* Interrupt options */ |
1120 | if (features & 0x10) { | |
1121 | p = parse_irq(p, q, &entry->irq); | |
3f9c5f4c DB |
1122 | if (p == NULL) |
1123 | return -EINVAL; | |
1da177e4 LT |
1124 | } else |
1125 | entry->irq.IRQInfo1 = 0; | |
1126 | ||
1127 | switch (features & 0x60) { | |
1128 | case 0x00: | |
1129 | entry->mem.nwin = 0; | |
1130 | break; | |
1131 | case 0x20: | |
1132 | entry->mem.nwin = 1; | |
6b1e6f63 | 1133 | entry->mem.win[0].len = get_unaligned_le16(p) << 8; |
1da177e4 LT |
1134 | entry->mem.win[0].card_addr = 0; |
1135 | entry->mem.win[0].host_addr = 0; | |
1136 | p += 2; | |
3f9c5f4c DB |
1137 | if (p > q) |
1138 | return -EINVAL; | |
1da177e4 LT |
1139 | break; |
1140 | case 0x40: | |
1141 | entry->mem.nwin = 1; | |
6b1e6f63 HH |
1142 | entry->mem.win[0].len = get_unaligned_le16(p) << 8; |
1143 | entry->mem.win[0].card_addr = get_unaligned_le16(p + 2) << 8; | |
1da177e4 LT |
1144 | entry->mem.win[0].host_addr = 0; |
1145 | p += 4; | |
3f9c5f4c DB |
1146 | if (p > q) |
1147 | return -EINVAL; | |
1da177e4 LT |
1148 | break; |
1149 | case 0x60: | |
1150 | p = parse_mem(p, q, &entry->mem); | |
3f9c5f4c DB |
1151 | if (p == NULL) |
1152 | return -EINVAL; | |
1da177e4 LT |
1153 | break; |
1154 | } | |
1155 | ||
1156 | /* Misc features */ | |
1157 | if (features & 0x80) { | |
3f9c5f4c DB |
1158 | if (p == q) |
1159 | return -EINVAL; | |
1da177e4 LT |
1160 | entry->flags |= (*p << 8); |
1161 | while (*p & 0x80) | |
3f9c5f4c DB |
1162 | if (++p == q) |
1163 | return -EINVAL; | |
1da177e4 LT |
1164 | p++; |
1165 | } | |
1166 | ||
1167 | entry->subtuples = q-p; | |
9fea84f4 | 1168 | |
4c89e88b | 1169 | return 0; |
1da177e4 LT |
1170 | } |
1171 | ||
1172 | /*====================================================================*/ | |
1173 | ||
1da177e4 LT |
1174 | static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo) |
1175 | { | |
1176 | u_char *p, *q; | |
1177 | int n; | |
1178 | ||
1179 | p = (u_char *)tuple->TupleData; | |
1180 | q = p + tuple->TupleDataLen; | |
1181 | ||
1182 | for (n = 0; n < CISTPL_MAX_DEVICES; n++) { | |
9fea84f4 DB |
1183 | if (p > q-6) |
1184 | break; | |
1da177e4 LT |
1185 | geo->geo[n].buswidth = p[0]; |
1186 | geo->geo[n].erase_block = 1 << (p[1]-1); | |
1187 | geo->geo[n].read_block = 1 << (p[2]-1); | |
1188 | geo->geo[n].write_block = 1 << (p[3]-1); | |
1189 | geo->geo[n].partition = 1 << (p[4]-1); | |
1190 | geo->geo[n].interleave = 1 << (p[5]-1); | |
1191 | p += 6; | |
1192 | } | |
1193 | geo->ngeo = n; | |
4c89e88b | 1194 | return 0; |
1da177e4 LT |
1195 | } |
1196 | ||
1197 | /*====================================================================*/ | |
1198 | ||
1199 | static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2) | |
1200 | { | |
1201 | u_char *p, *q; | |
1202 | ||
1203 | if (tuple->TupleDataLen < 10) | |
3f9c5f4c | 1204 | return -EINVAL; |
9fea84f4 | 1205 | |
1da177e4 LT |
1206 | p = tuple->TupleData; |
1207 | q = p + tuple->TupleDataLen; | |
1208 | ||
1209 | v2->vers = p[0]; | |
1210 | v2->comply = p[1]; | |
9fea84f4 | 1211 | v2->dindex = get_unaligned_le16(p + 2); |
1da177e4 LT |
1212 | v2->vspec8 = p[6]; |
1213 | v2->vspec9 = p[7]; | |
1214 | v2->nhdr = p[8]; | |
1215 | p += 9; | |
1216 | return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL); | |
1217 | } | |
1218 | ||
1219 | /*====================================================================*/ | |
1220 | ||
1221 | static int parse_org(tuple_t *tuple, cistpl_org_t *org) | |
1222 | { | |
1223 | u_char *p, *q; | |
1224 | int i; | |
9fea84f4 | 1225 | |
1da177e4 LT |
1226 | p = tuple->TupleData; |
1227 | q = p + tuple->TupleDataLen; | |
3f9c5f4c DB |
1228 | if (p == q) |
1229 | return -EINVAL; | |
1da177e4 | 1230 | org->data_org = *p; |
3f9c5f4c DB |
1231 | if (++p == q) |
1232 | return -EINVAL; | |
1da177e4 LT |
1233 | for (i = 0; i < 30; i++) { |
1234 | org->desc[i] = *p; | |
9fea84f4 DB |
1235 | if (*p == '\0') |
1236 | break; | |
3f9c5f4c DB |
1237 | if (++p == q) |
1238 | return -EINVAL; | |
1da177e4 | 1239 | } |
4c89e88b | 1240 | return 0; |
1da177e4 LT |
1241 | } |
1242 | ||
1243 | /*====================================================================*/ | |
1244 | ||
1245 | static int parse_format(tuple_t *tuple, cistpl_format_t *fmt) | |
1246 | { | |
1247 | u_char *p; | |
1248 | ||
1249 | if (tuple->TupleDataLen < 10) | |
3f9c5f4c | 1250 | return -EINVAL; |
1da177e4 LT |
1251 | |
1252 | p = tuple->TupleData; | |
1253 | ||
1254 | fmt->type = p[0]; | |
1255 | fmt->edc = p[1]; | |
6b1e6f63 HH |
1256 | fmt->offset = get_unaligned_le32(p + 2); |
1257 | fmt->length = get_unaligned_le32(p + 6); | |
1da177e4 | 1258 | |
4c89e88b | 1259 | return 0; |
1da177e4 LT |
1260 | } |
1261 | ||
1262 | /*====================================================================*/ | |
1263 | ||
2f3061eb | 1264 | int pcmcia_parse_tuple(tuple_t *tuple, cisparse_t *parse) |
1da177e4 | 1265 | { |
4c89e88b | 1266 | int ret = 0; |
9fea84f4 | 1267 | |
1da177e4 | 1268 | if (tuple->TupleDataLen > tuple->TupleDataMax) |
3f9c5f4c | 1269 | return -EINVAL; |
1da177e4 LT |
1270 | switch (tuple->TupleCode) { |
1271 | case CISTPL_DEVICE: | |
1272 | case CISTPL_DEVICE_A: | |
1273 | ret = parse_device(tuple, &parse->device); | |
1274 | break; | |
1da177e4 LT |
1275 | case CISTPL_CHECKSUM: |
1276 | ret = parse_checksum(tuple, &parse->checksum); | |
1277 | break; | |
1278 | case CISTPL_LONGLINK_A: | |
1279 | case CISTPL_LONGLINK_C: | |
1280 | ret = parse_longlink(tuple, &parse->longlink); | |
1281 | break; | |
1282 | case CISTPL_LONGLINK_MFC: | |
1283 | ret = parse_longlink_mfc(tuple, &parse->longlink_mfc); | |
1284 | break; | |
1285 | case CISTPL_VERS_1: | |
1286 | ret = parse_vers_1(tuple, &parse->version_1); | |
1287 | break; | |
1288 | case CISTPL_ALTSTR: | |
1289 | ret = parse_altstr(tuple, &parse->altstr); | |
1290 | break; | |
1291 | case CISTPL_JEDEC_A: | |
1292 | case CISTPL_JEDEC_C: | |
1293 | ret = parse_jedec(tuple, &parse->jedec); | |
1294 | break; | |
1295 | case CISTPL_MANFID: | |
1296 | ret = parse_manfid(tuple, &parse->manfid); | |
1297 | break; | |
1298 | case CISTPL_FUNCID: | |
1299 | ret = parse_funcid(tuple, &parse->funcid); | |
1300 | break; | |
1301 | case CISTPL_FUNCE: | |
1302 | ret = parse_funce(tuple, &parse->funce); | |
1303 | break; | |
1304 | case CISTPL_CONFIG: | |
1305 | ret = parse_config(tuple, &parse->config); | |
1306 | break; | |
1307 | case CISTPL_CFTABLE_ENTRY: | |
1308 | ret = parse_cftable_entry(tuple, &parse->cftable_entry); | |
1309 | break; | |
1310 | case CISTPL_DEVICE_GEO: | |
1311 | case CISTPL_DEVICE_GEO_A: | |
1312 | ret = parse_device_geo(tuple, &parse->device_geo); | |
1313 | break; | |
1314 | case CISTPL_VERS_2: | |
1315 | ret = parse_vers_2(tuple, &parse->vers_2); | |
1316 | break; | |
1317 | case CISTPL_ORG: | |
1318 | ret = parse_org(tuple, &parse->org); | |
1319 | break; | |
1320 | case CISTPL_FORMAT: | |
1321 | case CISTPL_FORMAT_A: | |
1322 | ret = parse_format(tuple, &parse->format); | |
1323 | break; | |
1324 | case CISTPL_NO_LINK: | |
1325 | case CISTPL_LINKTARGET: | |
4c89e88b | 1326 | ret = 0; |
1da177e4 LT |
1327 | break; |
1328 | default: | |
de6405e9 | 1329 | ret = -EINVAL; |
1da177e4 LT |
1330 | break; |
1331 | } | |
3f9c5f4c | 1332 | if (ret) |
d50dbec3 | 1333 | pr_debug("parse_tuple failed %d\n", ret); |
1da177e4 LT |
1334 | return ret; |
1335 | } | |
2f3061eb | 1336 | EXPORT_SYMBOL(pcmcia_parse_tuple); |
1da177e4 LT |
1337 | |
1338 | /*====================================================================== | |
1339 | ||
1340 | This is used internally by Card Services to look up CIS stuff. | |
9fea84f4 | 1341 | |
1da177e4 LT |
1342 | ======================================================================*/ |
1343 | ||
1344 | int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse) | |
1345 | { | |
1346 | tuple_t tuple; | |
1347 | cisdata_t *buf; | |
1348 | int ret; | |
1349 | ||
1350 | buf = kmalloc(256, GFP_KERNEL); | |
1168386a DB |
1351 | if (buf == NULL) { |
1352 | dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n"); | |
1353 | return -ENOMEM; | |
1354 | } | |
1da177e4 | 1355 | tuple.DesiredTuple = code; |
84897fc0 DB |
1356 | tuple.Attributes = 0; |
1357 | if (function == BIND_FN_ALL) | |
1358 | tuple.Attributes = TUPLE_RETURN_COMMON; | |
1da177e4 | 1359 | ret = pccard_get_first_tuple(s, function, &tuple); |
4c89e88b DB |
1360 | if (ret != 0) |
1361 | goto done; | |
1da177e4 LT |
1362 | tuple.TupleData = buf; |
1363 | tuple.TupleOffset = 0; | |
1364 | tuple.TupleDataMax = 255; | |
1365 | ret = pccard_get_tuple_data(s, &tuple); | |
4c89e88b DB |
1366 | if (ret != 0) |
1367 | goto done; | |
2f3061eb | 1368 | ret = pcmcia_parse_tuple(&tuple, parse); |
1da177e4 LT |
1369 | done: |
1370 | kfree(buf); | |
1371 | return ret; | |
1372 | } | |
1da177e4 | 1373 | |
91284224 DB |
1374 | |
1375 | /** | |
1376 | * pccard_loop_tuple() - loop over tuples in the CIS | |
1377 | * @s: the struct pcmcia_socket where the card is inserted | |
1378 | * @function: the device function we loop for | |
1379 | * @code: which CIS code shall we look for? | |
1380 | * @parse: buffer where the tuple shall be parsed (or NULL, if no parse) | |
1381 | * @priv_data: private data to be passed to the loop_tuple function. | |
1382 | * @loop_tuple: function to call for each CIS entry of type @function. IT | |
1383 | * gets passed the raw tuple, the paresed tuple (if @parse is | |
1384 | * set) and @priv_data. | |
1385 | * | |
1386 | * pccard_loop_tuple() loops over all CIS entries of type @function, and | |
1387 | * calls the @loop_tuple function for each entry. If the call to @loop_tuple | |
1388 | * returns 0, the loop exits. Returns 0 on success or errorcode otherwise. | |
1389 | */ | |
1390 | int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function, | |
1391 | cisdata_t code, cisparse_t *parse, void *priv_data, | |
1392 | int (*loop_tuple) (tuple_t *tuple, | |
1393 | cisparse_t *parse, | |
1394 | void *priv_data)) | |
1395 | { | |
1396 | tuple_t tuple; | |
1397 | cisdata_t *buf; | |
1398 | int ret; | |
1399 | ||
1400 | buf = kzalloc(256, GFP_KERNEL); | |
1401 | if (buf == NULL) { | |
1402 | dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n"); | |
1403 | return -ENOMEM; | |
1404 | } | |
1405 | ||
1406 | tuple.TupleData = buf; | |
1407 | tuple.TupleDataMax = 255; | |
1408 | tuple.TupleOffset = 0; | |
1409 | tuple.DesiredTuple = code; | |
1410 | tuple.Attributes = 0; | |
1411 | ||
1412 | ret = pccard_get_first_tuple(s, function, &tuple); | |
1413 | while (!ret) { | |
1414 | if (pccard_get_tuple_data(s, &tuple)) | |
1415 | goto next_entry; | |
1416 | ||
1417 | if (parse) | |
1418 | if (pcmcia_parse_tuple(&tuple, parse)) | |
1419 | goto next_entry; | |
1420 | ||
1421 | ret = loop_tuple(&tuple, parse, priv_data); | |
1422 | if (!ret) | |
1423 | break; | |
1424 | ||
1425 | next_entry: | |
1426 | ret = pccard_get_next_tuple(s, function, &tuple); | |
1427 | } | |
1428 | ||
1429 | kfree(buf); | |
1430 | return ret; | |
1431 | } | |
91284224 DB |
1432 | |
1433 | ||
f131ddc4 DB |
1434 | /** |
1435 | * pccard_validate_cis() - check whether card has a sensible CIS | |
1436 | * @s: the struct pcmcia_socket we are to check | |
1437 | * @info: returns the number of tuples in the (valid) CIS, or 0 | |
1438 | * | |
1439 | * This tries to determine if a card has a sensible CIS. In @info, it | |
1440 | * returns the number of tuples in the CIS, or 0 if the CIS looks bad. The | |
1441 | * checks include making sure several critical tuples are present and | |
1442 | * valid; seeing if the total number of tuples is reasonable; and | |
1443 | * looking for tuples that use reserved codes. | |
1444 | * | |
1445 | * The function returns 0 on success. | |
1446 | */ | |
84897fc0 | 1447 | int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *info) |
1da177e4 | 1448 | { |
f131ddc4 DB |
1449 | tuple_t *tuple; |
1450 | cisparse_t *p; | |
1451 | unsigned int count = 0; | |
1452 | int ret, reserved, dev_ok = 0, ident_ok = 0; | |
1da177e4 | 1453 | |
f131ddc4 DB |
1454 | if (!s) |
1455 | return -EINVAL; | |
1da177e4 | 1456 | |
f131ddc4 DB |
1457 | /* We do not want to validate the CIS cache... */ |
1458 | destroy_cis_cache(s); | |
904e3777 | 1459 | |
f131ddc4 DB |
1460 | tuple = kmalloc(sizeof(*tuple), GFP_KERNEL); |
1461 | if (tuple == NULL) { | |
1462 | dev_warn(&s->dev, "no memory to validate CIS\n"); | |
1463 | return -ENOMEM; | |
1464 | } | |
1465 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
1466 | if (p == NULL) { | |
1467 | kfree(tuple); | |
1468 | dev_warn(&s->dev, "no memory to validate CIS\n"); | |
1469 | return -ENOMEM; | |
1470 | } | |
1da177e4 | 1471 | |
f131ddc4 DB |
1472 | count = reserved = 0; |
1473 | tuple->DesiredTuple = RETURN_FIRST_TUPLE; | |
1474 | tuple->Attributes = TUPLE_RETURN_COMMON; | |
1475 | ret = pccard_get_first_tuple(s, BIND_FN_ALL, tuple); | |
4c89e88b | 1476 | if (ret != 0) |
f131ddc4 DB |
1477 | goto done; |
1478 | ||
1479 | /* First tuple should be DEVICE; we should really have either that | |
1480 | or a CFTABLE_ENTRY of some sort */ | |
1481 | if ((tuple->TupleCode == CISTPL_DEVICE) || | |
1482 | (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_CFTABLE_ENTRY, p)) || | |
1483 | (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_CFTABLE_ENTRY_CB, p))) | |
1484 | dev_ok++; | |
1485 | ||
1486 | /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2 | |
1487 | tuple, for card identification. Certain old D-Link and Linksys | |
1488 | cards have only a broken VERS_2 tuple; hence the bogus test. */ | |
1489 | if ((pccard_read_tuple(s, BIND_FN_ALL, CISTPL_MANFID, p) == 0) || | |
1490 | (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_VERS_1, p) == 0) || | |
1491 | (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_VERS_2, p) != -ENOSPC)) | |
1492 | ident_ok++; | |
1493 | ||
1494 | if (!dev_ok && !ident_ok) | |
1495 | goto done; | |
1496 | ||
1497 | for (count = 1; count < MAX_TUPLES; count++) { | |
1498 | ret = pccard_get_next_tuple(s, BIND_FN_ALL, tuple); | |
1499 | if (ret != 0) | |
1500 | break; | |
1501 | if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) || | |
1502 | ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) || | |
1503 | ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff))) | |
1504 | reserved++; | |
1505 | } | |
1506 | if ((count == MAX_TUPLES) || (reserved > 5) || | |
1507 | ((!dev_ok || !ident_ok) && (count > 10))) | |
1508 | count = 0; | |
1509 | ||
1510 | ret = 0; | |
1da177e4 LT |
1511 | |
1512 | done: | |
f131ddc4 DB |
1513 | /* invalidate CIS cache on failure */ |
1514 | if (!dev_ok || !ident_ok || !count) { | |
1515 | destroy_cis_cache(s); | |
1516 | ret = -EIO; | |
1517 | } | |
1518 | ||
1519 | if (info) | |
1520 | *info = count; | |
1521 | kfree(tuple); | |
1522 | kfree(p); | |
1523 | return ret; | |
1da177e4 | 1524 | } |
6e7b51a7 DB |
1525 | |
1526 | ||
1527 | #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev) | |
1528 | ||
1529 | static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf, | |
1530 | loff_t off, size_t count) | |
1531 | { | |
1532 | tuple_t tuple; | |
1533 | int status, i; | |
1534 | loff_t pointer = 0; | |
1535 | ssize_t ret = 0; | |
1536 | u_char *tuplebuffer; | |
1537 | u_char *tempbuffer; | |
1538 | ||
1539 | tuplebuffer = kmalloc(sizeof(u_char) * 256, GFP_KERNEL); | |
1540 | if (!tuplebuffer) | |
1541 | return -ENOMEM; | |
1542 | ||
1543 | tempbuffer = kmalloc(sizeof(u_char) * 258, GFP_KERNEL); | |
1544 | if (!tempbuffer) { | |
1545 | ret = -ENOMEM; | |
1546 | goto free_tuple; | |
1547 | } | |
1548 | ||
1549 | memset(&tuple, 0, sizeof(tuple_t)); | |
1550 | ||
1551 | tuple.Attributes = TUPLE_RETURN_LINK | TUPLE_RETURN_COMMON; | |
1552 | tuple.DesiredTuple = RETURN_FIRST_TUPLE; | |
1553 | tuple.TupleOffset = 0; | |
1554 | ||
1555 | status = pccard_get_first_tuple(s, BIND_FN_ALL, &tuple); | |
1556 | while (!status) { | |
1557 | tuple.TupleData = tuplebuffer; | |
1558 | tuple.TupleDataMax = 255; | |
1559 | memset(tuplebuffer, 0, sizeof(u_char) * 255); | |
1560 | ||
1561 | status = pccard_get_tuple_data(s, &tuple); | |
1562 | if (status) | |
1563 | break; | |
1564 | ||
1565 | if (off < (pointer + 2 + tuple.TupleDataLen)) { | |
1566 | tempbuffer[0] = tuple.TupleCode & 0xff; | |
1567 | tempbuffer[1] = tuple.TupleLink & 0xff; | |
1568 | for (i = 0; i < tuple.TupleDataLen; i++) | |
1569 | tempbuffer[i + 2] = tuplebuffer[i] & 0xff; | |
1570 | ||
1571 | for (i = 0; i < (2 + tuple.TupleDataLen); i++) { | |
1572 | if (((i + pointer) >= off) && | |
1573 | (i + pointer) < (off + count)) { | |
1574 | buf[ret] = tempbuffer[i]; | |
1575 | ret++; | |
1576 | } | |
1577 | } | |
1578 | } | |
1579 | ||
1580 | pointer += 2 + tuple.TupleDataLen; | |
1581 | ||
1582 | if (pointer >= (off + count)) | |
1583 | break; | |
1584 | ||
1585 | if (tuple.TupleCode == CISTPL_END) | |
1586 | break; | |
1587 | status = pccard_get_next_tuple(s, BIND_FN_ALL, &tuple); | |
1588 | } | |
1589 | ||
1590 | kfree(tempbuffer); | |
1591 | free_tuple: | |
1592 | kfree(tuplebuffer); | |
1593 | ||
1594 | return ret; | |
1595 | } | |
1596 | ||
1597 | ||
1598 | static ssize_t pccard_show_cis(struct kobject *kobj, | |
1599 | struct bin_attribute *bin_attr, | |
1600 | char *buf, loff_t off, size_t count) | |
1601 | { | |
1602 | unsigned int size = 0x200; | |
1603 | ||
1604 | if (off >= size) | |
1605 | count = 0; | |
1606 | else { | |
1607 | struct pcmcia_socket *s; | |
1608 | unsigned int chains; | |
1609 | ||
1610 | if (off + count > size) | |
1611 | count = size - off; | |
1612 | ||
1613 | s = to_socket(container_of(kobj, struct device, kobj)); | |
1614 | ||
1615 | if (!(s->state & SOCKET_PRESENT)) | |
1616 | return -ENODEV; | |
1617 | if (pccard_validate_cis(s, &chains)) | |
1618 | return -EIO; | |
1619 | if (!chains) | |
1620 | return -ENODATA; | |
1621 | ||
1622 | count = pccard_extract_cis(s, buf, off, count); | |
1623 | } | |
1624 | ||
1625 | return count; | |
1626 | } | |
1627 | ||
1628 | ||
1629 | static ssize_t pccard_store_cis(struct kobject *kobj, | |
1630 | struct bin_attribute *bin_attr, | |
1631 | char *buf, loff_t off, size_t count) | |
1632 | { | |
1633 | struct pcmcia_socket *s; | |
1634 | int error; | |
1635 | ||
1636 | s = to_socket(container_of(kobj, struct device, kobj)); | |
1637 | ||
1638 | if (off) | |
1639 | return -EINVAL; | |
1640 | ||
1641 | if (count >= CISTPL_MAX_CIS_SIZE) | |
1642 | return -EINVAL; | |
1643 | ||
1644 | if (!(s->state & SOCKET_PRESENT)) | |
1645 | return -ENODEV; | |
1646 | ||
1647 | error = pcmcia_replace_cis(s, buf, count); | |
1648 | if (error) | |
1649 | return -EIO; | |
1650 | ||
1651 | mutex_lock(&s->skt_mutex); | |
1652 | if ((s->callback) && (s->state & SOCKET_PRESENT) && | |
1653 | !(s->state & SOCKET_CARDBUS)) { | |
1654 | if (try_module_get(s->callback->owner)) { | |
1655 | s->callback->requery(s, 1); | |
1656 | module_put(s->callback->owner); | |
1657 | } | |
1658 | } | |
1659 | mutex_unlock(&s->skt_mutex); | |
1660 | ||
1661 | return count; | |
1662 | } | |
1663 | ||
1664 | ||
1665 | struct bin_attribute pccard_cis_attr = { | |
1666 | .attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR }, | |
1667 | .size = 0x200, | |
1668 | .read = pccard_show_cis, | |
1669 | .write = pccard_store_cis, | |
1670 | }; |