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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 | ||
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 | ||
39 | static const u_char mantissa[] = { | |
40 | 10, 12, 13, 15, 20, 25, 30, 35, | |
41 | 40, 45, 50, 55, 60, 70, 80, 90 | |
42 | }; | |
43 | ||
44 | static 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 | ||
65 | INT_MODULE_PARM(cis_width, 0); /* 16-bit CIS? */ | |
66 | ||
67 | void 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 | } | |
81 | EXPORT_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 | */ | |
88 | static void __iomem * | |
89 | set_cis_map(struct pcmcia_socket *s, unsigned int card_offset, unsigned int flags) | |
90 | { | |
91 | pccard_mem_map *mem = &s->cis_mem; | |
92 | if (!(s->features & SS_CAP_STATIC_MAP) && mem->res == NULL) { | |
e6ea0b9e | 93 | mem->res = pcmcia_find_mem_region(0, s->map_size, s->map_size, 0, s); |
1da177e4 LT |
94 | if (mem->res == NULL) { |
95 | printk(KERN_NOTICE "cs: unable to map card memory!\n"); | |
96 | return NULL; | |
97 | } | |
98 | s->cis_virt = ioremap(mem->res->start, s->map_size); | |
99 | } | |
100 | mem->card_start = card_offset; | |
101 | mem->flags = flags; | |
102 | s->ops->set_mem_map(s, mem); | |
103 | if (s->features & SS_CAP_STATIC_MAP) { | |
104 | if (s->cis_virt) | |
105 | iounmap(s->cis_virt); | |
106 | s->cis_virt = ioremap(mem->static_start, s->map_size); | |
107 | } | |
108 | return s->cis_virt; | |
109 | } | |
110 | ||
111 | /*====================================================================== | |
112 | ||
113 | Low-level functions to read and write CIS memory. I think the | |
114 | write routine is only useful for writing one-byte registers. | |
115 | ||
116 | ======================================================================*/ | |
117 | ||
118 | /* Bits in attr field */ | |
119 | #define IS_ATTR 1 | |
120 | #define IS_INDIRECT 8 | |
121 | ||
e6ea0b9e | 122 | int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, |
1da177e4 LT |
123 | u_int len, void *ptr) |
124 | { | |
125 | void __iomem *sys, *end; | |
126 | unsigned char *buf = ptr; | |
127 | ||
e6ea0b9e | 128 | cs_dbg(s, 3, "pcmcia_read_cis_mem(%d, %#x, %u)\n", attr, addr, len); |
1da177e4 LT |
129 | |
130 | if (attr & IS_INDIRECT) { | |
131 | /* Indirect accesses use a bunch of special registers at fixed | |
132 | locations in common memory */ | |
133 | u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN; | |
134 | if (attr & IS_ATTR) { | |
135 | addr *= 2; | |
136 | flags = ICTRL0_AUTOINC; | |
137 | } | |
138 | ||
139 | sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0)); | |
140 | if (!sys) { | |
141 | memset(ptr, 0xff, len); | |
142 | return -1; | |
143 | } | |
144 | ||
145 | writeb(flags, sys+CISREG_ICTRL0); | |
146 | writeb(addr & 0xff, sys+CISREG_IADDR0); | |
147 | writeb((addr>>8) & 0xff, sys+CISREG_IADDR1); | |
148 | writeb((addr>>16) & 0xff, sys+CISREG_IADDR2); | |
149 | writeb((addr>>24) & 0xff, sys+CISREG_IADDR3); | |
150 | for ( ; len > 0; len--, buf++) | |
151 | *buf = readb(sys+CISREG_IDATA0); | |
152 | } else { | |
153 | u_int inc = 1, card_offset, flags; | |
154 | ||
155 | flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0); | |
156 | if (attr) { | |
157 | flags |= MAP_ATTRIB; | |
158 | inc++; | |
159 | addr *= 2; | |
160 | } | |
161 | ||
162 | card_offset = addr & ~(s->map_size-1); | |
163 | while (len) { | |
164 | sys = set_cis_map(s, card_offset, flags); | |
165 | if (!sys) { | |
166 | memset(ptr, 0xff, len); | |
167 | return -1; | |
168 | } | |
169 | end = sys + s->map_size; | |
170 | sys = sys + (addr & (s->map_size-1)); | |
171 | for ( ; len > 0; len--, buf++, sys += inc) { | |
172 | if (sys == end) | |
173 | break; | |
174 | *buf = readb(sys); | |
175 | } | |
176 | card_offset += s->map_size; | |
177 | addr = 0; | |
178 | } | |
179 | } | |
180 | cs_dbg(s, 3, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n", | |
181 | *(u_char *)(ptr+0), *(u_char *)(ptr+1), | |
182 | *(u_char *)(ptr+2), *(u_char *)(ptr+3)); | |
183 | return 0; | |
184 | } | |
1a8d4663 DB |
185 | EXPORT_SYMBOL(pcmcia_read_cis_mem); |
186 | ||
1da177e4 | 187 | |
e6ea0b9e | 188 | void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr, |
1da177e4 LT |
189 | u_int len, void *ptr) |
190 | { | |
191 | void __iomem *sys, *end; | |
192 | unsigned char *buf = ptr; | |
193 | ||
e6ea0b9e | 194 | cs_dbg(s, 3, "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr, addr, len); |
1da177e4 LT |
195 | |
196 | if (attr & IS_INDIRECT) { | |
197 | /* Indirect accesses use a bunch of special registers at fixed | |
198 | locations in common memory */ | |
199 | u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN; | |
200 | if (attr & IS_ATTR) { | |
201 | addr *= 2; | |
202 | flags = ICTRL0_AUTOINC; | |
203 | } | |
204 | ||
205 | sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0)); | |
206 | if (!sys) | |
207 | return; /* FIXME: Error */ | |
208 | ||
209 | writeb(flags, sys+CISREG_ICTRL0); | |
210 | writeb(addr & 0xff, sys+CISREG_IADDR0); | |
211 | writeb((addr>>8) & 0xff, sys+CISREG_IADDR1); | |
212 | writeb((addr>>16) & 0xff, sys+CISREG_IADDR2); | |
213 | writeb((addr>>24) & 0xff, sys+CISREG_IADDR3); | |
214 | for ( ; len > 0; len--, buf++) | |
215 | writeb(*buf, sys+CISREG_IDATA0); | |
216 | } else { | |
217 | u_int inc = 1, card_offset, flags; | |
218 | ||
219 | flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0); | |
220 | if (attr & IS_ATTR) { | |
221 | flags |= MAP_ATTRIB; | |
222 | inc++; | |
223 | addr *= 2; | |
224 | } | |
225 | ||
226 | card_offset = addr & ~(s->map_size-1); | |
227 | while (len) { | |
228 | sys = set_cis_map(s, card_offset, flags); | |
229 | if (!sys) | |
230 | return; /* FIXME: error */ | |
231 | ||
232 | end = sys + s->map_size; | |
233 | sys = sys + (addr & (s->map_size-1)); | |
234 | for ( ; len > 0; len--, buf++, sys += inc) { | |
235 | if (sys == end) | |
236 | break; | |
237 | writeb(*buf, sys); | |
238 | } | |
239 | card_offset += s->map_size; | |
240 | addr = 0; | |
241 | } | |
242 | } | |
243 | } | |
1a8d4663 DB |
244 | EXPORT_SYMBOL(pcmcia_write_cis_mem); |
245 | ||
1da177e4 LT |
246 | |
247 | /*====================================================================== | |
248 | ||
249 | This is a wrapper around read_cis_mem, with the same interface, | |
250 | but which caches information, for cards whose CIS may not be | |
251 | readable all the time. | |
252 | ||
253 | ======================================================================*/ | |
254 | ||
255 | static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, | |
256 | u_int len, void *ptr) | |
257 | { | |
258 | struct cis_cache_entry *cis; | |
259 | int ret; | |
260 | ||
261 | if (s->fake_cis) { | |
262 | if (s->fake_cis_len > addr+len) | |
263 | memcpy(ptr, s->fake_cis+addr, len); | |
264 | else | |
265 | memset(ptr, 0xff, len); | |
266 | return; | |
267 | } | |
268 | ||
269 | list_for_each_entry(cis, &s->cis_cache, node) { | |
270 | if (cis->addr == addr && cis->len == len && cis->attr == attr) { | |
271 | memcpy(ptr, cis->cache, len); | |
272 | return; | |
273 | } | |
274 | } | |
275 | ||
276 | #ifdef CONFIG_CARDBUS | |
277 | if (s->state & SOCKET_CARDBUS) | |
278 | ret = read_cb_mem(s, attr, addr, len, ptr); | |
279 | else | |
280 | #endif | |
e6ea0b9e | 281 | ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr); |
1da177e4 LT |
282 | |
283 | if (ret == 0) { | |
284 | /* Copy data into the cache */ | |
285 | cis = kmalloc(sizeof(struct cis_cache_entry) + len, GFP_KERNEL); | |
286 | if (cis) { | |
287 | cis->addr = addr; | |
288 | cis->len = len; | |
289 | cis->attr = attr; | |
290 | memcpy(cis->cache, ptr, len); | |
291 | list_add(&cis->node, &s->cis_cache); | |
292 | } | |
293 | } | |
294 | } | |
295 | ||
296 | static void | |
297 | remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len) | |
298 | { | |
299 | struct cis_cache_entry *cis; | |
300 | ||
301 | list_for_each_entry(cis, &s->cis_cache, node) | |
302 | if (cis->addr == addr && cis->len == len && cis->attr == attr) { | |
303 | list_del(&cis->node); | |
304 | kfree(cis); | |
305 | break; | |
306 | } | |
307 | } | |
308 | ||
309 | void destroy_cis_cache(struct pcmcia_socket *s) | |
310 | { | |
311 | struct list_head *l, *n; | |
312 | ||
313 | list_for_each_safe(l, n, &s->cis_cache) { | |
314 | struct cis_cache_entry *cis = list_entry(l, struct cis_cache_entry, node); | |
315 | ||
316 | list_del(&cis->node); | |
317 | kfree(cis); | |
318 | } | |
319 | ||
320 | /* | |
321 | * If there was a fake CIS, destroy that as well. | |
322 | */ | |
323 | if (s->fake_cis) { | |
324 | kfree(s->fake_cis); | |
325 | s->fake_cis = NULL; | |
326 | } | |
327 | } | |
328 | EXPORT_SYMBOL(destroy_cis_cache); | |
329 | ||
330 | /*====================================================================== | |
331 | ||
332 | This verifies if the CIS of a card matches what is in the CIS | |
333 | cache. | |
334 | ||
335 | ======================================================================*/ | |
336 | ||
337 | int verify_cis_cache(struct pcmcia_socket *s) | |
338 | { | |
339 | struct cis_cache_entry *cis; | |
340 | char *buf; | |
341 | ||
342 | buf = kmalloc(256, GFP_KERNEL); | |
343 | if (buf == NULL) | |
344 | return -1; | |
345 | list_for_each_entry(cis, &s->cis_cache, node) { | |
346 | int len = cis->len; | |
347 | ||
348 | if (len > 256) | |
349 | len = 256; | |
350 | #ifdef CONFIG_CARDBUS | |
351 | if (s->state & SOCKET_CARDBUS) | |
352 | read_cb_mem(s, cis->attr, cis->addr, len, buf); | |
353 | else | |
354 | #endif | |
e6ea0b9e | 355 | pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf); |
1da177e4 LT |
356 | |
357 | if (memcmp(buf, cis->cache, len) != 0) { | |
358 | kfree(buf); | |
359 | return -1; | |
360 | } | |
361 | } | |
362 | kfree(buf); | |
363 | return 0; | |
364 | } | |
365 | ||
366 | /*====================================================================== | |
367 | ||
368 | For really bad cards, we provide a facility for uploading a | |
369 | replacement CIS. | |
370 | ||
371 | ======================================================================*/ | |
372 | ||
373 | int pcmcia_replace_cis(struct pcmcia_socket *s, cisdump_t *cis) | |
374 | { | |
375 | if (s->fake_cis != NULL) { | |
376 | kfree(s->fake_cis); | |
377 | s->fake_cis = NULL; | |
378 | } | |
379 | if (cis->Length > CISTPL_MAX_CIS_SIZE) | |
380 | return CS_BAD_SIZE; | |
381 | s->fake_cis = kmalloc(cis->Length, GFP_KERNEL); | |
382 | if (s->fake_cis == NULL) | |
383 | return CS_OUT_OF_RESOURCE; | |
384 | s->fake_cis_len = cis->Length; | |
385 | memcpy(s->fake_cis, cis->Data, cis->Length); | |
386 | return CS_SUCCESS; | |
387 | } | |
33519ddd | 388 | EXPORT_SYMBOL(pcmcia_replace_cis); |
1da177e4 LT |
389 | |
390 | /*====================================================================== | |
391 | ||
392 | The high-level CIS tuple services | |
393 | ||
394 | ======================================================================*/ | |
395 | ||
396 | typedef struct tuple_flags { | |
397 | u_int link_space:4; | |
398 | u_int has_link:1; | |
399 | u_int mfc_fn:3; | |
400 | u_int space:4; | |
401 | } tuple_flags; | |
402 | ||
403 | #define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space) | |
404 | #define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link) | |
405 | #define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn) | |
406 | #define SPACE(f) (((tuple_flags *)(&(f)))->space) | |
407 | ||
408 | int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int func, tuple_t *tuple); | |
409 | ||
410 | int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple) | |
411 | { | |
412 | if (!s) | |
413 | return CS_BAD_HANDLE; | |
414 | if (!(s->state & SOCKET_PRESENT)) | |
415 | return CS_NO_CARD; | |
416 | tuple->TupleLink = tuple->Flags = 0; | |
417 | #ifdef CONFIG_CARDBUS | |
418 | if (s->state & SOCKET_CARDBUS) { | |
419 | struct pci_dev *dev = s->cb_dev; | |
420 | u_int ptr; | |
421 | pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr); | |
422 | tuple->CISOffset = ptr & ~7; | |
423 | SPACE(tuple->Flags) = (ptr & 7); | |
424 | } else | |
425 | #endif | |
426 | { | |
427 | /* Assume presence of a LONGLINK_C to address 0 */ | |
428 | tuple->CISOffset = tuple->LinkOffset = 0; | |
429 | SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1; | |
430 | } | |
431 | if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) && | |
432 | !(tuple->Attributes & TUPLE_RETURN_COMMON)) { | |
433 | cisdata_t req = tuple->DesiredTuple; | |
434 | tuple->DesiredTuple = CISTPL_LONGLINK_MFC; | |
435 | if (pccard_get_next_tuple(s, function, tuple) == CS_SUCCESS) { | |
436 | tuple->DesiredTuple = CISTPL_LINKTARGET; | |
437 | if (pccard_get_next_tuple(s, function, tuple) != CS_SUCCESS) | |
438 | return CS_NO_MORE_ITEMS; | |
439 | } else | |
440 | tuple->CISOffset = tuple->TupleLink = 0; | |
441 | tuple->DesiredTuple = req; | |
442 | } | |
443 | return pccard_get_next_tuple(s, function, tuple); | |
444 | } | |
445 | EXPORT_SYMBOL(pccard_get_first_tuple); | |
446 | ||
447 | static int follow_link(struct pcmcia_socket *s, tuple_t *tuple) | |
448 | { | |
449 | u_char link[5]; | |
450 | u_int ofs; | |
451 | ||
452 | if (MFC_FN(tuple->Flags)) { | |
453 | /* Get indirect link from the MFC tuple */ | |
454 | read_cis_cache(s, LINK_SPACE(tuple->Flags), | |
455 | tuple->LinkOffset, 5, link); | |
456 | ofs = le32_to_cpu(*(u_int *)(link+1)); | |
457 | SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR); | |
458 | /* Move to the next indirect link */ | |
459 | tuple->LinkOffset += 5; | |
460 | MFC_FN(tuple->Flags)--; | |
461 | } else if (HAS_LINK(tuple->Flags)) { | |
462 | ofs = tuple->LinkOffset; | |
463 | SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags); | |
464 | HAS_LINK(tuple->Flags) = 0; | |
465 | } else { | |
466 | return -1; | |
467 | } | |
468 | if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) { | |
469 | /* This is ugly, but a common CIS error is to code the long | |
470 | link offset incorrectly, so we check the right spot... */ | |
471 | read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link); | |
472 | if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) && | |
473 | (strncmp(link+2, "CIS", 3) == 0)) | |
474 | return ofs; | |
475 | remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5); | |
476 | /* Then, we try the wrong spot... */ | |
477 | ofs = ofs >> 1; | |
478 | } | |
479 | read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link); | |
480 | if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) && | |
481 | (strncmp(link+2, "CIS", 3) == 0)) | |
482 | return ofs; | |
483 | remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5); | |
484 | return -1; | |
485 | } | |
486 | ||
487 | int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple) | |
488 | { | |
489 | u_char link[2], tmp; | |
490 | int ofs, i, attr; | |
491 | ||
492 | if (!s) | |
493 | return CS_BAD_HANDLE; | |
494 | if (!(s->state & SOCKET_PRESENT)) | |
495 | return CS_NO_CARD; | |
496 | ||
497 | link[1] = tuple->TupleLink; | |
498 | ofs = tuple->CISOffset + tuple->TupleLink; | |
499 | attr = SPACE(tuple->Flags); | |
500 | ||
501 | for (i = 0; i < MAX_TUPLES; i++) { | |
502 | if (link[1] == 0xff) { | |
503 | link[0] = CISTPL_END; | |
504 | } else { | |
505 | read_cis_cache(s, attr, ofs, 2, link); | |
506 | if (link[0] == CISTPL_NULL) { | |
507 | ofs++; continue; | |
508 | } | |
509 | } | |
510 | ||
511 | /* End of chain? Follow long link if possible */ | |
512 | if (link[0] == CISTPL_END) { | |
513 | if ((ofs = follow_link(s, tuple)) < 0) | |
514 | return CS_NO_MORE_ITEMS; | |
515 | attr = SPACE(tuple->Flags); | |
516 | read_cis_cache(s, attr, ofs, 2, link); | |
517 | } | |
518 | ||
519 | /* Is this a link tuple? Make a note of it */ | |
520 | if ((link[0] == CISTPL_LONGLINK_A) || | |
521 | (link[0] == CISTPL_LONGLINK_C) || | |
522 | (link[0] == CISTPL_LONGLINK_MFC) || | |
523 | (link[0] == CISTPL_LINKTARGET) || | |
524 | (link[0] == CISTPL_INDIRECT) || | |
525 | (link[0] == CISTPL_NO_LINK)) { | |
526 | switch (link[0]) { | |
527 | case CISTPL_LONGLINK_A: | |
528 | HAS_LINK(tuple->Flags) = 1; | |
529 | LINK_SPACE(tuple->Flags) = attr | IS_ATTR; | |
530 | read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset); | |
531 | break; | |
532 | case CISTPL_LONGLINK_C: | |
533 | HAS_LINK(tuple->Flags) = 1; | |
534 | LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR; | |
535 | read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset); | |
536 | break; | |
537 | case CISTPL_INDIRECT: | |
538 | HAS_LINK(tuple->Flags) = 1; | |
539 | LINK_SPACE(tuple->Flags) = IS_ATTR | IS_INDIRECT; | |
540 | tuple->LinkOffset = 0; | |
541 | break; | |
542 | case CISTPL_LONGLINK_MFC: | |
543 | tuple->LinkOffset = ofs + 3; | |
544 | LINK_SPACE(tuple->Flags) = attr; | |
545 | if (function == BIND_FN_ALL) { | |
546 | /* Follow all the MFC links */ | |
547 | read_cis_cache(s, attr, ofs+2, 1, &tmp); | |
548 | MFC_FN(tuple->Flags) = tmp; | |
549 | } else { | |
550 | /* Follow exactly one of the links */ | |
551 | MFC_FN(tuple->Flags) = 1; | |
552 | tuple->LinkOffset += function * 5; | |
553 | } | |
554 | break; | |
555 | case CISTPL_NO_LINK: | |
556 | HAS_LINK(tuple->Flags) = 0; | |
557 | break; | |
558 | } | |
559 | if ((tuple->Attributes & TUPLE_RETURN_LINK) && | |
560 | (tuple->DesiredTuple == RETURN_FIRST_TUPLE)) | |
561 | break; | |
562 | } else | |
563 | if (tuple->DesiredTuple == RETURN_FIRST_TUPLE) | |
564 | break; | |
565 | ||
566 | if (link[0] == tuple->DesiredTuple) | |
567 | break; | |
568 | ofs += link[1] + 2; | |
569 | } | |
570 | if (i == MAX_TUPLES) { | |
571 | cs_dbg(s, 1, "cs: overrun in pcmcia_get_next_tuple\n"); | |
572 | return CS_NO_MORE_ITEMS; | |
573 | } | |
574 | ||
575 | tuple->TupleCode = link[0]; | |
576 | tuple->TupleLink = link[1]; | |
577 | tuple->CISOffset = ofs + 2; | |
578 | return CS_SUCCESS; | |
579 | } | |
580 | EXPORT_SYMBOL(pccard_get_next_tuple); | |
581 | ||
582 | /*====================================================================*/ | |
583 | ||
584 | #define _MIN(a, b) (((a) < (b)) ? (a) : (b)) | |
585 | ||
586 | int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple) | |
587 | { | |
588 | u_int len; | |
589 | ||
590 | if (!s) | |
591 | return CS_BAD_HANDLE; | |
592 | ||
593 | if (tuple->TupleLink < tuple->TupleOffset) | |
594 | return CS_NO_MORE_ITEMS; | |
595 | len = tuple->TupleLink - tuple->TupleOffset; | |
596 | tuple->TupleDataLen = tuple->TupleLink; | |
597 | if (len == 0) | |
598 | return CS_SUCCESS; | |
599 | read_cis_cache(s, SPACE(tuple->Flags), | |
600 | tuple->CISOffset + tuple->TupleOffset, | |
601 | _MIN(len, tuple->TupleDataMax), tuple->TupleData); | |
602 | return CS_SUCCESS; | |
603 | } | |
604 | EXPORT_SYMBOL(pccard_get_tuple_data); | |
605 | ||
606 | ||
607 | /*====================================================================== | |
608 | ||
609 | Parsing routines for individual tuples | |
610 | ||
611 | ======================================================================*/ | |
612 | ||
613 | static int parse_device(tuple_t *tuple, cistpl_device_t *device) | |
614 | { | |
615 | int i; | |
616 | u_char scale; | |
617 | u_char *p, *q; | |
618 | ||
619 | p = (u_char *)tuple->TupleData; | |
620 | q = p + tuple->TupleDataLen; | |
621 | ||
622 | device->ndev = 0; | |
623 | for (i = 0; i < CISTPL_MAX_DEVICES; i++) { | |
624 | ||
625 | if (*p == 0xff) break; | |
626 | device->dev[i].type = (*p >> 4); | |
627 | device->dev[i].wp = (*p & 0x08) ? 1 : 0; | |
628 | switch (*p & 0x07) { | |
629 | case 0: device->dev[i].speed = 0; break; | |
630 | case 1: device->dev[i].speed = 250; break; | |
631 | case 2: device->dev[i].speed = 200; break; | |
632 | case 3: device->dev[i].speed = 150; break; | |
633 | case 4: device->dev[i].speed = 100; break; | |
634 | case 7: | |
635 | if (++p == q) return CS_BAD_TUPLE; | |
636 | device->dev[i].speed = SPEED_CVT(*p); | |
637 | while (*p & 0x80) | |
638 | if (++p == q) return CS_BAD_TUPLE; | |
639 | break; | |
640 | default: | |
641 | return CS_BAD_TUPLE; | |
642 | } | |
643 | ||
644 | if (++p == q) return CS_BAD_TUPLE; | |
645 | if (*p == 0xff) break; | |
646 | scale = *p & 7; | |
647 | if (scale == 7) return CS_BAD_TUPLE; | |
648 | device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2)); | |
649 | device->ndev++; | |
650 | if (++p == q) break; | |
651 | } | |
652 | ||
653 | return CS_SUCCESS; | |
654 | } | |
655 | ||
656 | /*====================================================================*/ | |
657 | ||
658 | static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum) | |
659 | { | |
660 | u_char *p; | |
661 | if (tuple->TupleDataLen < 5) | |
662 | return CS_BAD_TUPLE; | |
663 | p = (u_char *)tuple->TupleData; | |
664 | csum->addr = tuple->CISOffset+(short)le16_to_cpu(*(u_short *)p)-2; | |
665 | csum->len = le16_to_cpu(*(u_short *)(p + 2)); | |
666 | csum->sum = *(p+4); | |
667 | return CS_SUCCESS; | |
668 | } | |
669 | ||
670 | /*====================================================================*/ | |
671 | ||
672 | static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link) | |
673 | { | |
674 | if (tuple->TupleDataLen < 4) | |
675 | return CS_BAD_TUPLE; | |
676 | link->addr = le32_to_cpu(*(u_int *)tuple->TupleData); | |
677 | return CS_SUCCESS; | |
678 | } | |
679 | ||
680 | /*====================================================================*/ | |
681 | ||
682 | static int parse_longlink_mfc(tuple_t *tuple, | |
683 | cistpl_longlink_mfc_t *link) | |
684 | { | |
685 | u_char *p; | |
686 | int i; | |
687 | ||
688 | p = (u_char *)tuple->TupleData; | |
689 | ||
690 | link->nfn = *p; p++; | |
691 | if (tuple->TupleDataLen <= link->nfn*5) | |
692 | return CS_BAD_TUPLE; | |
693 | for (i = 0; i < link->nfn; i++) { | |
694 | link->fn[i].space = *p; p++; | |
695 | link->fn[i].addr = le32_to_cpu(*(u_int *)p); p += 4; | |
696 | } | |
697 | return CS_SUCCESS; | |
698 | } | |
699 | ||
700 | /*====================================================================*/ | |
701 | ||
702 | static int parse_strings(u_char *p, u_char *q, int max, | |
703 | char *s, u_char *ofs, u_char *found) | |
704 | { | |
705 | int i, j, ns; | |
706 | ||
707 | if (p == q) return CS_BAD_TUPLE; | |
708 | ns = 0; j = 0; | |
709 | for (i = 0; i < max; i++) { | |
710 | if (*p == 0xff) break; | |
711 | ofs[i] = j; | |
712 | ns++; | |
713 | for (;;) { | |
714 | s[j++] = (*p == 0xff) ? '\0' : *p; | |
715 | if ((*p == '\0') || (*p == 0xff)) break; | |
716 | if (++p == q) return CS_BAD_TUPLE; | |
717 | } | |
718 | if ((*p == 0xff) || (++p == q)) break; | |
719 | } | |
720 | if (found) { | |
721 | *found = ns; | |
722 | return CS_SUCCESS; | |
723 | } else { | |
724 | return (ns == max) ? CS_SUCCESS : CS_BAD_TUPLE; | |
725 | } | |
726 | } | |
727 | ||
728 | /*====================================================================*/ | |
729 | ||
730 | static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1) | |
731 | { | |
732 | u_char *p, *q; | |
733 | ||
734 | p = (u_char *)tuple->TupleData; | |
735 | q = p + tuple->TupleDataLen; | |
736 | ||
737 | vers_1->major = *p; p++; | |
738 | vers_1->minor = *p; p++; | |
739 | if (p >= q) return CS_BAD_TUPLE; | |
740 | ||
741 | return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS, | |
742 | vers_1->str, vers_1->ofs, &vers_1->ns); | |
743 | } | |
744 | ||
745 | /*====================================================================*/ | |
746 | ||
747 | static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr) | |
748 | { | |
749 | u_char *p, *q; | |
750 | ||
751 | p = (u_char *)tuple->TupleData; | |
752 | q = p + tuple->TupleDataLen; | |
753 | ||
754 | return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS, | |
755 | altstr->str, altstr->ofs, &altstr->ns); | |
756 | } | |
757 | ||
758 | /*====================================================================*/ | |
759 | ||
760 | static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec) | |
761 | { | |
762 | u_char *p, *q; | |
763 | int nid; | |
764 | ||
765 | p = (u_char *)tuple->TupleData; | |
766 | q = p + tuple->TupleDataLen; | |
767 | ||
768 | for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) { | |
769 | if (p > q-2) break; | |
770 | jedec->id[nid].mfr = p[0]; | |
771 | jedec->id[nid].info = p[1]; | |
772 | p += 2; | |
773 | } | |
774 | jedec->nid = nid; | |
775 | return CS_SUCCESS; | |
776 | } | |
777 | ||
778 | /*====================================================================*/ | |
779 | ||
780 | static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m) | |
781 | { | |
782 | u_short *p; | |
783 | if (tuple->TupleDataLen < 4) | |
784 | return CS_BAD_TUPLE; | |
785 | p = (u_short *)tuple->TupleData; | |
786 | m->manf = le16_to_cpu(p[0]); | |
787 | m->card = le16_to_cpu(p[1]); | |
788 | return CS_SUCCESS; | |
789 | } | |
790 | ||
791 | /*====================================================================*/ | |
792 | ||
793 | static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f) | |
794 | { | |
795 | u_char *p; | |
796 | if (tuple->TupleDataLen < 2) | |
797 | return CS_BAD_TUPLE; | |
798 | p = (u_char *)tuple->TupleData; | |
799 | f->func = p[0]; | |
800 | f->sysinit = p[1]; | |
801 | return CS_SUCCESS; | |
802 | } | |
803 | ||
804 | /*====================================================================*/ | |
805 | ||
806 | static int parse_funce(tuple_t *tuple, cistpl_funce_t *f) | |
807 | { | |
808 | u_char *p; | |
809 | int i; | |
810 | if (tuple->TupleDataLen < 1) | |
811 | return CS_BAD_TUPLE; | |
812 | p = (u_char *)tuple->TupleData; | |
813 | f->type = p[0]; | |
814 | for (i = 1; i < tuple->TupleDataLen; i++) | |
815 | f->data[i-1] = p[i]; | |
816 | return CS_SUCCESS; | |
817 | } | |
818 | ||
819 | /*====================================================================*/ | |
820 | ||
821 | static int parse_config(tuple_t *tuple, cistpl_config_t *config) | |
822 | { | |
823 | int rasz, rmsz, i; | |
824 | u_char *p; | |
825 | ||
826 | p = (u_char *)tuple->TupleData; | |
827 | rasz = *p & 0x03; | |
828 | rmsz = (*p & 0x3c) >> 2; | |
829 | if (tuple->TupleDataLen < rasz+rmsz+4) | |
830 | return CS_BAD_TUPLE; | |
831 | config->last_idx = *(++p); | |
832 | p++; | |
833 | config->base = 0; | |
834 | for (i = 0; i <= rasz; i++) | |
835 | config->base += p[i] << (8*i); | |
836 | p += rasz+1; | |
837 | for (i = 0; i < 4; i++) | |
838 | config->rmask[i] = 0; | |
839 | for (i = 0; i <= rmsz; i++) | |
840 | config->rmask[i>>2] += p[i] << (8*(i%4)); | |
841 | config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4); | |
842 | return CS_SUCCESS; | |
843 | } | |
844 | ||
845 | /*====================================================================== | |
846 | ||
847 | The following routines are all used to parse the nightmarish | |
848 | config table entries. | |
849 | ||
850 | ======================================================================*/ | |
851 | ||
852 | static u_char *parse_power(u_char *p, u_char *q, | |
853 | cistpl_power_t *pwr) | |
854 | { | |
855 | int i; | |
856 | u_int scale; | |
857 | ||
858 | if (p == q) return NULL; | |
859 | pwr->present = *p; | |
860 | pwr->flags = 0; | |
861 | p++; | |
862 | for (i = 0; i < 7; i++) | |
863 | if (pwr->present & (1<<i)) { | |
864 | if (p == q) return NULL; | |
865 | pwr->param[i] = POWER_CVT(*p); | |
866 | scale = POWER_SCALE(*p); | |
867 | while (*p & 0x80) { | |
868 | if (++p == q) return NULL; | |
869 | if ((*p & 0x7f) < 100) | |
870 | pwr->param[i] += (*p & 0x7f) * scale / 100; | |
871 | else if (*p == 0x7d) | |
872 | pwr->flags |= CISTPL_POWER_HIGHZ_OK; | |
873 | else if (*p == 0x7e) | |
874 | pwr->param[i] = 0; | |
875 | else if (*p == 0x7f) | |
876 | pwr->flags |= CISTPL_POWER_HIGHZ_REQ; | |
877 | else | |
878 | return NULL; | |
879 | } | |
880 | p++; | |
881 | } | |
882 | return p; | |
883 | } | |
884 | ||
885 | /*====================================================================*/ | |
886 | ||
887 | static u_char *parse_timing(u_char *p, u_char *q, | |
888 | cistpl_timing_t *timing) | |
889 | { | |
890 | u_char scale; | |
891 | ||
892 | if (p == q) return NULL; | |
893 | scale = *p; | |
894 | if ((scale & 3) != 3) { | |
895 | if (++p == q) return NULL; | |
896 | timing->wait = SPEED_CVT(*p); | |
897 | timing->waitscale = exponent[scale & 3]; | |
898 | } else | |
899 | timing->wait = 0; | |
900 | scale >>= 2; | |
901 | if ((scale & 7) != 7) { | |
902 | if (++p == q) return NULL; | |
903 | timing->ready = SPEED_CVT(*p); | |
904 | timing->rdyscale = exponent[scale & 7]; | |
905 | } else | |
906 | timing->ready = 0; | |
907 | scale >>= 3; | |
908 | if (scale != 7) { | |
909 | if (++p == q) return NULL; | |
910 | timing->reserved = SPEED_CVT(*p); | |
911 | timing->rsvscale = exponent[scale]; | |
912 | } else | |
913 | timing->reserved = 0; | |
914 | p++; | |
915 | return p; | |
916 | } | |
917 | ||
918 | /*====================================================================*/ | |
919 | ||
920 | static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io) | |
921 | { | |
922 | int i, j, bsz, lsz; | |
923 | ||
924 | if (p == q) return NULL; | |
925 | io->flags = *p; | |
926 | ||
927 | if (!(*p & 0x80)) { | |
928 | io->nwin = 1; | |
929 | io->win[0].base = 0; | |
930 | io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK)); | |
931 | return p+1; | |
932 | } | |
933 | ||
934 | if (++p == q) return NULL; | |
935 | io->nwin = (*p & 0x0f) + 1; | |
936 | bsz = (*p & 0x30) >> 4; | |
937 | if (bsz == 3) bsz++; | |
938 | lsz = (*p & 0xc0) >> 6; | |
939 | if (lsz == 3) lsz++; | |
940 | p++; | |
941 | ||
942 | for (i = 0; i < io->nwin; i++) { | |
943 | io->win[i].base = 0; | |
944 | io->win[i].len = 1; | |
945 | for (j = 0; j < bsz; j++, p++) { | |
946 | if (p == q) return NULL; | |
947 | io->win[i].base += *p << (j*8); | |
948 | } | |
949 | for (j = 0; j < lsz; j++, p++) { | |
950 | if (p == q) return NULL; | |
951 | io->win[i].len += *p << (j*8); | |
952 | } | |
953 | } | |
954 | return p; | |
955 | } | |
956 | ||
957 | /*====================================================================*/ | |
958 | ||
959 | static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem) | |
960 | { | |
961 | int i, j, asz, lsz, has_ha; | |
962 | u_int len, ca, ha; | |
963 | ||
964 | if (p == q) return NULL; | |
965 | ||
966 | mem->nwin = (*p & 0x07) + 1; | |
967 | lsz = (*p & 0x18) >> 3; | |
968 | asz = (*p & 0x60) >> 5; | |
969 | has_ha = (*p & 0x80); | |
970 | if (++p == q) return NULL; | |
971 | ||
972 | for (i = 0; i < mem->nwin; i++) { | |
973 | len = ca = ha = 0; | |
974 | for (j = 0; j < lsz; j++, p++) { | |
975 | if (p == q) return NULL; | |
976 | len += *p << (j*8); | |
977 | } | |
978 | for (j = 0; j < asz; j++, p++) { | |
979 | if (p == q) return NULL; | |
980 | ca += *p << (j*8); | |
981 | } | |
982 | if (has_ha) | |
983 | for (j = 0; j < asz; j++, p++) { | |
984 | if (p == q) return NULL; | |
985 | ha += *p << (j*8); | |
986 | } | |
987 | mem->win[i].len = len << 8; | |
988 | mem->win[i].card_addr = ca << 8; | |
989 | mem->win[i].host_addr = ha << 8; | |
990 | } | |
991 | return p; | |
992 | } | |
993 | ||
994 | /*====================================================================*/ | |
995 | ||
996 | static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq) | |
997 | { | |
998 | if (p == q) return NULL; | |
999 | irq->IRQInfo1 = *p; p++; | |
1000 | if (irq->IRQInfo1 & IRQ_INFO2_VALID) { | |
1001 | if (p+2 > q) return NULL; | |
1002 | irq->IRQInfo2 = (p[1]<<8) + p[0]; | |
1003 | p += 2; | |
1004 | } | |
1005 | return p; | |
1006 | } | |
1007 | ||
1008 | /*====================================================================*/ | |
1009 | ||
1010 | static int parse_cftable_entry(tuple_t *tuple, | |
1011 | cistpl_cftable_entry_t *entry) | |
1012 | { | |
1013 | u_char *p, *q, features; | |
1014 | ||
1015 | p = tuple->TupleData; | |
1016 | q = p + tuple->TupleDataLen; | |
1017 | entry->index = *p & 0x3f; | |
1018 | entry->flags = 0; | |
1019 | if (*p & 0x40) | |
1020 | entry->flags |= CISTPL_CFTABLE_DEFAULT; | |
1021 | if (*p & 0x80) { | |
1022 | if (++p == q) return CS_BAD_TUPLE; | |
1023 | if (*p & 0x10) | |
1024 | entry->flags |= CISTPL_CFTABLE_BVDS; | |
1025 | if (*p & 0x20) | |
1026 | entry->flags |= CISTPL_CFTABLE_WP; | |
1027 | if (*p & 0x40) | |
1028 | entry->flags |= CISTPL_CFTABLE_RDYBSY; | |
1029 | if (*p & 0x80) | |
1030 | entry->flags |= CISTPL_CFTABLE_MWAIT; | |
1031 | entry->interface = *p & 0x0f; | |
1032 | } else | |
1033 | entry->interface = 0; | |
1034 | ||
1035 | /* Process optional features */ | |
1036 | if (++p == q) return CS_BAD_TUPLE; | |
1037 | features = *p; p++; | |
1038 | ||
1039 | /* Power options */ | |
1040 | if ((features & 3) > 0) { | |
1041 | p = parse_power(p, q, &entry->vcc); | |
1042 | if (p == NULL) return CS_BAD_TUPLE; | |
1043 | } else | |
1044 | entry->vcc.present = 0; | |
1045 | if ((features & 3) > 1) { | |
1046 | p = parse_power(p, q, &entry->vpp1); | |
1047 | if (p == NULL) return CS_BAD_TUPLE; | |
1048 | } else | |
1049 | entry->vpp1.present = 0; | |
1050 | if ((features & 3) > 2) { | |
1051 | p = parse_power(p, q, &entry->vpp2); | |
1052 | if (p == NULL) return CS_BAD_TUPLE; | |
1053 | } else | |
1054 | entry->vpp2.present = 0; | |
1055 | ||
1056 | /* Timing options */ | |
1057 | if (features & 0x04) { | |
1058 | p = parse_timing(p, q, &entry->timing); | |
1059 | if (p == NULL) return CS_BAD_TUPLE; | |
1060 | } else { | |
1061 | entry->timing.wait = 0; | |
1062 | entry->timing.ready = 0; | |
1063 | entry->timing.reserved = 0; | |
1064 | } | |
1065 | ||
1066 | /* I/O window options */ | |
1067 | if (features & 0x08) { | |
1068 | p = parse_io(p, q, &entry->io); | |
1069 | if (p == NULL) return CS_BAD_TUPLE; | |
1070 | } else | |
1071 | entry->io.nwin = 0; | |
1072 | ||
1073 | /* Interrupt options */ | |
1074 | if (features & 0x10) { | |
1075 | p = parse_irq(p, q, &entry->irq); | |
1076 | if (p == NULL) return CS_BAD_TUPLE; | |
1077 | } else | |
1078 | entry->irq.IRQInfo1 = 0; | |
1079 | ||
1080 | switch (features & 0x60) { | |
1081 | case 0x00: | |
1082 | entry->mem.nwin = 0; | |
1083 | break; | |
1084 | case 0x20: | |
1085 | entry->mem.nwin = 1; | |
1086 | entry->mem.win[0].len = le16_to_cpu(*(u_short *)p) << 8; | |
1087 | entry->mem.win[0].card_addr = 0; | |
1088 | entry->mem.win[0].host_addr = 0; | |
1089 | p += 2; | |
1090 | if (p > q) return CS_BAD_TUPLE; | |
1091 | break; | |
1092 | case 0x40: | |
1093 | entry->mem.nwin = 1; | |
1094 | entry->mem.win[0].len = le16_to_cpu(*(u_short *)p) << 8; | |
1095 | entry->mem.win[0].card_addr = | |
1096 | le16_to_cpu(*(u_short *)(p+2)) << 8; | |
1097 | entry->mem.win[0].host_addr = 0; | |
1098 | p += 4; | |
1099 | if (p > q) return CS_BAD_TUPLE; | |
1100 | break; | |
1101 | case 0x60: | |
1102 | p = parse_mem(p, q, &entry->mem); | |
1103 | if (p == NULL) return CS_BAD_TUPLE; | |
1104 | break; | |
1105 | } | |
1106 | ||
1107 | /* Misc features */ | |
1108 | if (features & 0x80) { | |
1109 | if (p == q) return CS_BAD_TUPLE; | |
1110 | entry->flags |= (*p << 8); | |
1111 | while (*p & 0x80) | |
1112 | if (++p == q) return CS_BAD_TUPLE; | |
1113 | p++; | |
1114 | } | |
1115 | ||
1116 | entry->subtuples = q-p; | |
1117 | ||
1118 | return CS_SUCCESS; | |
1119 | } | |
1120 | ||
1121 | /*====================================================================*/ | |
1122 | ||
1123 | #ifdef CONFIG_CARDBUS | |
1124 | ||
1125 | static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar) | |
1126 | { | |
1127 | u_char *p; | |
1128 | if (tuple->TupleDataLen < 6) | |
1129 | return CS_BAD_TUPLE; | |
1130 | p = (u_char *)tuple->TupleData; | |
1131 | bar->attr = *p; | |
1132 | p += 2; | |
1133 | bar->size = le32_to_cpu(*(u_int *)p); | |
1134 | return CS_SUCCESS; | |
1135 | } | |
1136 | ||
1137 | static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config) | |
1138 | { | |
1139 | u_char *p; | |
1140 | ||
1141 | p = (u_char *)tuple->TupleData; | |
1142 | if ((*p != 3) || (tuple->TupleDataLen < 6)) | |
1143 | return CS_BAD_TUPLE; | |
1144 | config->last_idx = *(++p); | |
1145 | p++; | |
1146 | config->base = le32_to_cpu(*(u_int *)p); | |
1147 | config->subtuples = tuple->TupleDataLen - 6; | |
1148 | return CS_SUCCESS; | |
1149 | } | |
1150 | ||
1151 | static int parse_cftable_entry_cb(tuple_t *tuple, | |
1152 | cistpl_cftable_entry_cb_t *entry) | |
1153 | { | |
1154 | u_char *p, *q, features; | |
1155 | ||
1156 | p = tuple->TupleData; | |
1157 | q = p + tuple->TupleDataLen; | |
1158 | entry->index = *p & 0x3f; | |
1159 | entry->flags = 0; | |
1160 | if (*p & 0x40) | |
1161 | entry->flags |= CISTPL_CFTABLE_DEFAULT; | |
1162 | ||
1163 | /* Process optional features */ | |
1164 | if (++p == q) return CS_BAD_TUPLE; | |
1165 | features = *p; p++; | |
1166 | ||
1167 | /* Power options */ | |
1168 | if ((features & 3) > 0) { | |
1169 | p = parse_power(p, q, &entry->vcc); | |
1170 | if (p == NULL) return CS_BAD_TUPLE; | |
1171 | } else | |
1172 | entry->vcc.present = 0; | |
1173 | if ((features & 3) > 1) { | |
1174 | p = parse_power(p, q, &entry->vpp1); | |
1175 | if (p == NULL) return CS_BAD_TUPLE; | |
1176 | } else | |
1177 | entry->vpp1.present = 0; | |
1178 | if ((features & 3) > 2) { | |
1179 | p = parse_power(p, q, &entry->vpp2); | |
1180 | if (p == NULL) return CS_BAD_TUPLE; | |
1181 | } else | |
1182 | entry->vpp2.present = 0; | |
1183 | ||
1184 | /* I/O window options */ | |
1185 | if (features & 0x08) { | |
1186 | if (p == q) return CS_BAD_TUPLE; | |
1187 | entry->io = *p; p++; | |
1188 | } else | |
1189 | entry->io = 0; | |
1190 | ||
1191 | /* Interrupt options */ | |
1192 | if (features & 0x10) { | |
1193 | p = parse_irq(p, q, &entry->irq); | |
1194 | if (p == NULL) return CS_BAD_TUPLE; | |
1195 | } else | |
1196 | entry->irq.IRQInfo1 = 0; | |
1197 | ||
1198 | if (features & 0x20) { | |
1199 | if (p == q) return CS_BAD_TUPLE; | |
1200 | entry->mem = *p; p++; | |
1201 | } else | |
1202 | entry->mem = 0; | |
1203 | ||
1204 | /* Misc features */ | |
1205 | if (features & 0x80) { | |
1206 | if (p == q) return CS_BAD_TUPLE; | |
1207 | entry->flags |= (*p << 8); | |
1208 | if (*p & 0x80) { | |
1209 | if (++p == q) return CS_BAD_TUPLE; | |
1210 | entry->flags |= (*p << 16); | |
1211 | } | |
1212 | while (*p & 0x80) | |
1213 | if (++p == q) return CS_BAD_TUPLE; | |
1214 | p++; | |
1215 | } | |
1216 | ||
1217 | entry->subtuples = q-p; | |
1218 | ||
1219 | return CS_SUCCESS; | |
1220 | } | |
1221 | ||
1222 | #endif | |
1223 | ||
1224 | /*====================================================================*/ | |
1225 | ||
1226 | static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo) | |
1227 | { | |
1228 | u_char *p, *q; | |
1229 | int n; | |
1230 | ||
1231 | p = (u_char *)tuple->TupleData; | |
1232 | q = p + tuple->TupleDataLen; | |
1233 | ||
1234 | for (n = 0; n < CISTPL_MAX_DEVICES; n++) { | |
1235 | if (p > q-6) break; | |
1236 | geo->geo[n].buswidth = p[0]; | |
1237 | geo->geo[n].erase_block = 1 << (p[1]-1); | |
1238 | geo->geo[n].read_block = 1 << (p[2]-1); | |
1239 | geo->geo[n].write_block = 1 << (p[3]-1); | |
1240 | geo->geo[n].partition = 1 << (p[4]-1); | |
1241 | geo->geo[n].interleave = 1 << (p[5]-1); | |
1242 | p += 6; | |
1243 | } | |
1244 | geo->ngeo = n; | |
1245 | return CS_SUCCESS; | |
1246 | } | |
1247 | ||
1248 | /*====================================================================*/ | |
1249 | ||
1250 | static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2) | |
1251 | { | |
1252 | u_char *p, *q; | |
1253 | ||
1254 | if (tuple->TupleDataLen < 10) | |
1255 | return CS_BAD_TUPLE; | |
1256 | ||
1257 | p = tuple->TupleData; | |
1258 | q = p + tuple->TupleDataLen; | |
1259 | ||
1260 | v2->vers = p[0]; | |
1261 | v2->comply = p[1]; | |
1262 | v2->dindex = le16_to_cpu(*(u_short *)(p+2)); | |
1263 | v2->vspec8 = p[6]; | |
1264 | v2->vspec9 = p[7]; | |
1265 | v2->nhdr = p[8]; | |
1266 | p += 9; | |
1267 | return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL); | |
1268 | } | |
1269 | ||
1270 | /*====================================================================*/ | |
1271 | ||
1272 | static int parse_org(tuple_t *tuple, cistpl_org_t *org) | |
1273 | { | |
1274 | u_char *p, *q; | |
1275 | int i; | |
1276 | ||
1277 | p = tuple->TupleData; | |
1278 | q = p + tuple->TupleDataLen; | |
1279 | if (p == q) return CS_BAD_TUPLE; | |
1280 | org->data_org = *p; | |
1281 | if (++p == q) return CS_BAD_TUPLE; | |
1282 | for (i = 0; i < 30; i++) { | |
1283 | org->desc[i] = *p; | |
1284 | if (*p == '\0') break; | |
1285 | if (++p == q) return CS_BAD_TUPLE; | |
1286 | } | |
1287 | return CS_SUCCESS; | |
1288 | } | |
1289 | ||
1290 | /*====================================================================*/ | |
1291 | ||
1292 | static int parse_format(tuple_t *tuple, cistpl_format_t *fmt) | |
1293 | { | |
1294 | u_char *p; | |
1295 | ||
1296 | if (tuple->TupleDataLen < 10) | |
1297 | return CS_BAD_TUPLE; | |
1298 | ||
1299 | p = tuple->TupleData; | |
1300 | ||
1301 | fmt->type = p[0]; | |
1302 | fmt->edc = p[1]; | |
1303 | fmt->offset = le32_to_cpu(*(u_int *)(p+2)); | |
1304 | fmt->length = le32_to_cpu(*(u_int *)(p+6)); | |
1305 | ||
1306 | return CS_SUCCESS; | |
1307 | } | |
1308 | ||
1309 | /*====================================================================*/ | |
1310 | ||
1311 | int pccard_parse_tuple(tuple_t *tuple, cisparse_t *parse) | |
1312 | { | |
1313 | int ret = CS_SUCCESS; | |
1314 | ||
1315 | if (tuple->TupleDataLen > tuple->TupleDataMax) | |
1316 | return CS_BAD_TUPLE; | |
1317 | switch (tuple->TupleCode) { | |
1318 | case CISTPL_DEVICE: | |
1319 | case CISTPL_DEVICE_A: | |
1320 | ret = parse_device(tuple, &parse->device); | |
1321 | break; | |
1322 | #ifdef CONFIG_CARDBUS | |
1323 | case CISTPL_BAR: | |
1324 | ret = parse_bar(tuple, &parse->bar); | |
1325 | break; | |
1326 | case CISTPL_CONFIG_CB: | |
1327 | ret = parse_config_cb(tuple, &parse->config); | |
1328 | break; | |
1329 | case CISTPL_CFTABLE_ENTRY_CB: | |
1330 | ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb); | |
1331 | break; | |
1332 | #endif | |
1333 | case CISTPL_CHECKSUM: | |
1334 | ret = parse_checksum(tuple, &parse->checksum); | |
1335 | break; | |
1336 | case CISTPL_LONGLINK_A: | |
1337 | case CISTPL_LONGLINK_C: | |
1338 | ret = parse_longlink(tuple, &parse->longlink); | |
1339 | break; | |
1340 | case CISTPL_LONGLINK_MFC: | |
1341 | ret = parse_longlink_mfc(tuple, &parse->longlink_mfc); | |
1342 | break; | |
1343 | case CISTPL_VERS_1: | |
1344 | ret = parse_vers_1(tuple, &parse->version_1); | |
1345 | break; | |
1346 | case CISTPL_ALTSTR: | |
1347 | ret = parse_altstr(tuple, &parse->altstr); | |
1348 | break; | |
1349 | case CISTPL_JEDEC_A: | |
1350 | case CISTPL_JEDEC_C: | |
1351 | ret = parse_jedec(tuple, &parse->jedec); | |
1352 | break; | |
1353 | case CISTPL_MANFID: | |
1354 | ret = parse_manfid(tuple, &parse->manfid); | |
1355 | break; | |
1356 | case CISTPL_FUNCID: | |
1357 | ret = parse_funcid(tuple, &parse->funcid); | |
1358 | break; | |
1359 | case CISTPL_FUNCE: | |
1360 | ret = parse_funce(tuple, &parse->funce); | |
1361 | break; | |
1362 | case CISTPL_CONFIG: | |
1363 | ret = parse_config(tuple, &parse->config); | |
1364 | break; | |
1365 | case CISTPL_CFTABLE_ENTRY: | |
1366 | ret = parse_cftable_entry(tuple, &parse->cftable_entry); | |
1367 | break; | |
1368 | case CISTPL_DEVICE_GEO: | |
1369 | case CISTPL_DEVICE_GEO_A: | |
1370 | ret = parse_device_geo(tuple, &parse->device_geo); | |
1371 | break; | |
1372 | case CISTPL_VERS_2: | |
1373 | ret = parse_vers_2(tuple, &parse->vers_2); | |
1374 | break; | |
1375 | case CISTPL_ORG: | |
1376 | ret = parse_org(tuple, &parse->org); | |
1377 | break; | |
1378 | case CISTPL_FORMAT: | |
1379 | case CISTPL_FORMAT_A: | |
1380 | ret = parse_format(tuple, &parse->format); | |
1381 | break; | |
1382 | case CISTPL_NO_LINK: | |
1383 | case CISTPL_LINKTARGET: | |
1384 | ret = CS_SUCCESS; | |
1385 | break; | |
1386 | default: | |
1387 | ret = CS_UNSUPPORTED_FUNCTION; | |
1388 | break; | |
1389 | } | |
1390 | return ret; | |
1391 | } | |
1392 | EXPORT_SYMBOL(pccard_parse_tuple); | |
1393 | ||
1394 | /*====================================================================== | |
1395 | ||
1396 | This is used internally by Card Services to look up CIS stuff. | |
1397 | ||
1398 | ======================================================================*/ | |
1399 | ||
1400 | int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse) | |
1401 | { | |
1402 | tuple_t tuple; | |
1403 | cisdata_t *buf; | |
1404 | int ret; | |
1405 | ||
1406 | buf = kmalloc(256, GFP_KERNEL); | |
1407 | if (buf == NULL) | |
1408 | return CS_OUT_OF_RESOURCE; | |
1409 | tuple.DesiredTuple = code; | |
1410 | tuple.Attributes = TUPLE_RETURN_COMMON; | |
1411 | ret = pccard_get_first_tuple(s, function, &tuple); | |
1412 | if (ret != CS_SUCCESS) goto done; | |
1413 | tuple.TupleData = buf; | |
1414 | tuple.TupleOffset = 0; | |
1415 | tuple.TupleDataMax = 255; | |
1416 | ret = pccard_get_tuple_data(s, &tuple); | |
1417 | if (ret != CS_SUCCESS) goto done; | |
1418 | ret = pccard_parse_tuple(&tuple, parse); | |
1419 | done: | |
1420 | kfree(buf); | |
1421 | return ret; | |
1422 | } | |
1423 | EXPORT_SYMBOL(pccard_read_tuple); | |
1424 | ||
1425 | /*====================================================================== | |
1426 | ||
1427 | This tries to determine if a card has a sensible CIS. It returns | |
1428 | the number of tuples in the CIS, or 0 if the CIS looks bad. The | |
1429 | checks include making sure several critical tuples are present and | |
1430 | valid; seeing if the total number of tuples is reasonable; and | |
1431 | looking for tuples that use reserved codes. | |
1432 | ||
1433 | ======================================================================*/ | |
1434 | ||
1435 | int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, cisinfo_t *info) | |
1436 | { | |
1437 | tuple_t *tuple; | |
1438 | cisparse_t *p; | |
1439 | int ret, reserved, dev_ok = 0, ident_ok = 0; | |
1440 | ||
1441 | if (!s) | |
1442 | return CS_BAD_HANDLE; | |
1443 | ||
1444 | tuple = kmalloc(sizeof(*tuple), GFP_KERNEL); | |
1445 | if (tuple == NULL) | |
1446 | return CS_OUT_OF_RESOURCE; | |
1447 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
1448 | if (p == NULL) { | |
1449 | kfree(tuple); | |
1450 | return CS_OUT_OF_RESOURCE; | |
1451 | } | |
1452 | ||
1453 | info->Chains = reserved = 0; | |
1454 | tuple->DesiredTuple = RETURN_FIRST_TUPLE; | |
1455 | tuple->Attributes = TUPLE_RETURN_COMMON; | |
1456 | ret = pccard_get_first_tuple(s, function, tuple); | |
1457 | if (ret != CS_SUCCESS) | |
1458 | goto done; | |
1459 | ||
1460 | /* First tuple should be DEVICE; we should really have either that | |
1461 | or a CFTABLE_ENTRY of some sort */ | |
1462 | if ((tuple->TupleCode == CISTPL_DEVICE) || | |
1463 | (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY, p) == CS_SUCCESS) || | |
1464 | (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY_CB, p) == CS_SUCCESS)) | |
1465 | dev_ok++; | |
1466 | ||
1467 | /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2 | |
1468 | tuple, for card identification. Certain old D-Link and Linksys | |
1469 | cards have only a broken VERS_2 tuple; hence the bogus test. */ | |
1470 | if ((pccard_read_tuple(s, function, CISTPL_MANFID, p) == CS_SUCCESS) || | |
1471 | (pccard_read_tuple(s, function, CISTPL_VERS_1, p) == CS_SUCCESS) || | |
1472 | (pccard_read_tuple(s, function, CISTPL_VERS_2, p) != CS_NO_MORE_ITEMS)) | |
1473 | ident_ok++; | |
1474 | ||
1475 | if (!dev_ok && !ident_ok) | |
1476 | goto done; | |
1477 | ||
1478 | for (info->Chains = 1; info->Chains < MAX_TUPLES; info->Chains++) { | |
1479 | ret = pccard_get_next_tuple(s, function, tuple); | |
1480 | if (ret != CS_SUCCESS) break; | |
1481 | if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) || | |
1482 | ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) || | |
1483 | ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff))) | |
1484 | reserved++; | |
1485 | } | |
1486 | if ((info->Chains == MAX_TUPLES) || (reserved > 5) || | |
1487 | ((!dev_ok || !ident_ok) && (info->Chains > 10))) | |
1488 | info->Chains = 0; | |
1489 | ||
1490 | done: | |
1491 | kfree(tuple); | |
1492 | kfree(p); | |
1493 | return CS_SUCCESS; | |
1494 | } | |
1495 | EXPORT_SYMBOL(pccard_validate_cis); |