Rev 5096 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
5096 | serge | 1 | |
2 | #include |
||
3 | #include |
||
4 | #include |
||
5 | #include |
||
6 | #include |
||
7 | #include |
||
8 | |||
9 | |||
10 | { |
||
11 | return __builtin_malloc(len); |
||
5270 | serge | 12 | }; |
5096 | serge | 13 | |
14 | |||
15 | * DMI stands for "Desktop Management Interface". It is part |
||
16 | * of and an antecedent to, SMBIOS, which stands for System |
||
17 | * Management BIOS. See further: http://www.dmtf.org/standards |
||
18 | */ |
||
19 | static const char dmi_empty_string[] = " "; |
||
20 | |||
21 | |||
22 | /* |
||
23 | * Catch too early calls to dmi_check_system(): |
||
24 | */ |
||
25 | static int dmi_initialized; |
||
26 | |||
27 | |||
28 | static char dmi_ids_string[128]; |
||
29 | |||
30 | |||
31 | const char *device; |
||
32 | const char *bank; |
||
33 | u16 handle; |
||
34 | } *dmi_memdev; |
||
35 | static int dmi_memdev_nr; |
||
36 | |||
37 | |||
38 | { |
||
39 | const u8 *bp = ((u8 *) dm) + dm->length; |
||
40 | |||
41 | |||
42 | s--; |
||
43 | while (s > 0 && *bp) { |
||
44 | bp += strlen(bp) + 1; |
||
45 | s--; |
||
46 | } |
||
47 | |||
48 | |||
49 | size_t len = strlen(bp)+1; |
||
50 | size_t cmp_len = len > 8 ? 8 : len; |
||
51 | |||
52 | |||
53 | return dmi_empty_string; |
||
54 | return bp; |
||
55 | } |
||
56 | } |
||
57 | |||
58 | |||
59 | } |
||
60 | |||
61 | |||
62 | { |
||
63 | const char *bp = dmi_string_nosave(dm, s); |
||
64 | char *str; |
||
65 | size_t len; |
||
66 | |||
67 | |||
68 | return dmi_empty_string; |
||
69 | |||
70 | |||
71 | str = dmi_alloc(len); |
||
72 | if (str != NULL) |
||
73 | strcpy(str, bp); |
||
74 | |||
75 | |||
76 | } |
||
77 | |||
78 | |||
79 | * We have to be cautious here. We have seen BIOSes with DMI pointers |
||
80 | * pointing to completely the wrong place for example |
||
81 | */ |
||
82 | static void dmi_table(u8 *buf, int len, int num, |
||
83 | void (*decode)(const struct dmi_header *, void *), |
||
84 | void *private_data) |
||
85 | { |
||
86 | u8 *data = buf; |
||
87 | int i = 0; |
||
88 | |||
89 | |||
90 | * Stop when we see all the items the table claimed to have |
||
91 | * OR we run off the end of the table (also happens) |
||
92 | */ |
||
93 | while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) { |
||
94 | const struct dmi_header *dm = (const struct dmi_header *)data; |
||
95 | |||
96 | |||
97 | * We want to know the total length (formatted area and |
||
98 | * strings) before decoding to make sure we won't run off the |
||
99 | * table in dmi_decode or dmi_string |
||
100 | */ |
||
101 | data += dm->length; |
||
102 | while ((data - buf < len - 1) && (data[0] || data[1])) |
||
103 | data++; |
||
104 | if (data - buf < len - 1) |
||
105 | decode(dm, private_data); |
||
106 | data += 2; |
||
107 | i++; |
||
108 | } |
||
109 | } |
||
110 | |||
111 | |||
112 | static u16 dmi_len; |
||
113 | static u16 dmi_num; |
||
114 | |||
115 | |||
116 | void *)) |
||
117 | { |
||
118 | u8 *buf; |
||
119 | |||
120 | |||
121 | if (buf == NULL) |
||
122 | return -1; |
||
123 | |||
124 | |||
125 | |||
126 | |||
127 | |||
128 | |||
129 | } |
||
130 | |||
131 | |||
132 | { |
||
133 | u8 sum = 0; |
||
134 | int a; |
||
135 | |||
136 | |||
137 | sum += buf[a]; |
||
138 | |||
139 | |||
140 | } |
||
141 | |||
142 | |||
143 | static LIST_HEAD(dmi_devices); |
||
144 | int dmi_available; |
||
145 | |||
146 | |||
147 | * Save a DMI string |
||
148 | */ |
||
149 | static void __init dmi_save_ident(const struct dmi_header *dm, int slot, |
||
150 | int string) |
||
151 | { |
||
152 | const char *d = (const char *) dm; |
||
153 | const char *p; |
||
154 | |||
155 | |||
156 | return; |
||
157 | |||
158 | |||
159 | if (p == NULL) |
||
160 | return; |
||
161 | |||
162 | |||
163 | } |
||
164 | |||
165 | |||
166 | int index) |
||
167 | { |
||
168 | const u8 *d = (u8 *) dm + index; |
||
169 | char *s; |
||
170 | int is_ff = 1, is_00 = 1, i; |
||
171 | |||
172 | |||
173 | return; |
||
174 | |||
175 | |||
176 | if (d[i] != 0x00) |
||
177 | is_00 = 0; |
||
178 | if (d[i] != 0xFF) |
||
179 | is_ff = 0; |
||
180 | } |
||
181 | |||
182 | |||
183 | return; |
||
184 | |||
185 | |||
186 | if (!s) |
||
187 | return; |
||
188 | |||
189 | |||
190 | * As of version 2.6 of the SMBIOS specification, the first 3 fields of |
||
191 | * the UUID are supposed to be little-endian encoded. The specification |
||
192 | * says that this is the defacto standard. |
||
193 | */ |
||
194 | if (dmi_ver >= 0x0206) |
||
195 | sprintf(s, "%pUL", d); |
||
196 | else |
||
197 | sprintf(s, "%pUB", d); |
||
198 | |||
199 | |||
200 | } |
||
201 | |||
202 | |||
203 | int index) |
||
204 | { |
||
205 | const u8 *d = (u8 *) dm + index; |
||
206 | char *s; |
||
207 | |||
208 | |||
209 | return; |
||
210 | |||
211 | |||
212 | if (!s) |
||
213 | return; |
||
214 | |||
215 | |||
216 | dmi_ident[slot] = s; |
||
217 | } |
||
218 | |||
219 | |||
220 | { |
||
221 | struct dmi_device *dev; |
||
222 | |||
223 | |||
224 | if (dmi_find_device(type, name, NULL)) |
||
225 | return; |
||
226 | |||
227 | |||
228 | if (!dev) |
||
229 | return; |
||
230 | |||
231 | |||
232 | strcpy((char *)(dev + 1), name); |
||
233 | dev->name = (char *)(dev + 1); |
||
234 | dev->device_data = NULL; |
||
235 | list_add(&dev->list, &dmi_devices); |
||
236 | } |
||
237 | |||
238 | |||
239 | { |
||
240 | int i, count = (dm->length - sizeof(struct dmi_header)) / 2; |
||
241 | |||
242 | |||
243 | const char *d = (char *)(dm + 1) + (i * 2); |
||
244 | |||
245 | |||
246 | if ((*d & 0x80) == 0) |
||
247 | continue; |
||
248 | |||
249 | |||
250 | } |
||
251 | } |
||
252 | |||
253 | |||
254 | { |
||
255 | int i, count = *(u8 *)(dm + 1); |
||
256 | struct dmi_device *dev; |
||
257 | |||
258 | |||
259 | const char *devname = dmi_string(dm, i); |
||
260 | |||
261 | |||
262 | continue; |
||
263 | |||
264 | |||
265 | if (!dev) |
||
266 | break; |
||
267 | |||
268 | |||
269 | dev->name = devname; |
||
270 | dev->device_data = NULL; |
||
271 | |||
272 | |||
273 | } |
||
274 | } |
||
275 | |||
276 | |||
277 | { |
||
278 | struct dmi_device *dev; |
||
279 | void *data; |
||
280 | |||
281 | |||
282 | if (data == NULL) |
||
283 | return; |
||
284 | |||
285 | |||
286 | |||
287 | |||
288 | if (!dev) |
||
289 | return; |
||
290 | |||
291 | |||
292 | dev->name = "IPMI controller"; |
||
293 | dev->device_data = data; |
||
294 | |||
295 | |||
296 | } |
||
297 | |||
298 | |||
299 | int devfn, const char *name) |
||
300 | { |
||
301 | struct dmi_dev_onboard *onboard_dev; |
||
302 | |||
303 | |||
304 | if (!onboard_dev) |
||
305 | return; |
||
306 | |||
307 | |||
308 | onboard_dev->segment = segment; |
||
309 | onboard_dev->bus = bus; |
||
310 | onboard_dev->devfn = devfn; |
||
311 | |||
312 | |||
313 | onboard_dev->dev.type = DMI_DEV_TYPE_DEV_ONBOARD; |
||
314 | onboard_dev->dev.name = (char *)&onboard_dev[1]; |
||
315 | onboard_dev->dev.device_data = onboard_dev; |
||
316 | |||
317 | |||
318 | } |
||
319 | |||
320 | |||
321 | { |
||
322 | const u8 *d = (u8 *) dm + 5; |
||
323 | |||
324 | |||
325 | if ((*d & 0x80) == 0) |
||
326 | return; |
||
327 | |||
328 | |||
329 | dmi_string_nosave(dm, *(d-1))); |
||
330 | dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d - 1))); |
||
331 | |||
332 | |||
333 | |||
334 | |||
335 | * Process a DMI table entry. Right now all we care about are the BIOS |
||
336 | * and machine entries. For 2.5 we should pull the smbus controller info |
||
337 | * out of here. |
||
338 | */ |
||
339 | static void __init dmi_decode(const struct dmi_header *dm, void *dummy) |
||
340 | { |
||
341 | switch (dm->type) { |
||
342 | case 0: /* BIOS Information */ |
||
343 | dmi_save_ident(dm, DMI_BIOS_VENDOR, 4); |
||
344 | dmi_save_ident(dm, DMI_BIOS_VERSION, 5); |
||
345 | dmi_save_ident(dm, DMI_BIOS_DATE, 8); |
||
346 | break; |
||
347 | case 1: /* System Information */ |
||
348 | dmi_save_ident(dm, DMI_SYS_VENDOR, 4); |
||
349 | dmi_save_ident(dm, DMI_PRODUCT_NAME, 5); |
||
350 | dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6); |
||
351 | dmi_save_ident(dm, DMI_PRODUCT_SERIAL, 7); |
||
352 | dmi_save_uuid(dm, DMI_PRODUCT_UUID, 8); |
||
353 | break; |
||
354 | case 2: /* Base Board Information */ |
||
355 | dmi_save_ident(dm, DMI_BOARD_VENDOR, 4); |
||
356 | dmi_save_ident(dm, DMI_BOARD_NAME, 5); |
||
357 | dmi_save_ident(dm, DMI_BOARD_VERSION, 6); |
||
358 | dmi_save_ident(dm, DMI_BOARD_SERIAL, 7); |
||
359 | dmi_save_ident(dm, DMI_BOARD_ASSET_TAG, 8); |
||
360 | break; |
||
361 | case 3: /* Chassis Information */ |
||
362 | dmi_save_ident(dm, DMI_CHASSIS_VENDOR, 4); |
||
363 | dmi_save_type(dm, DMI_CHASSIS_TYPE, 5); |
||
364 | dmi_save_ident(dm, DMI_CHASSIS_VERSION, 6); |
||
365 | dmi_save_ident(dm, DMI_CHASSIS_SERIAL, 7); |
||
366 | dmi_save_ident(dm, DMI_CHASSIS_ASSET_TAG, 8); |
||
367 | break; |
||
368 | case 10: /* Onboard Devices Information */ |
||
369 | dmi_save_devices(dm); |
||
370 | break; |
||
371 | case 11: /* OEM Strings */ |
||
372 | dmi_save_oem_strings_devices(dm); |
||
373 | break; |
||
374 | case 38: /* IPMI Device Information */ |
||
375 | dmi_save_ipmi_device(dm); |
||
376 | break; |
||
377 | case 41: /* Onboard Devices Extended Information */ |
||
378 | dmi_save_extended_devices(dm); |
||
379 | } |
||
380 | } |
||
381 | |||
382 | |||
383 | { |
||
384 | int c = 0; |
||
385 | const char *p; |
||
386 | |||
387 | |||
388 | return c; |
||
389 | |||
390 | |||
391 | if (isprint(*p)) |
||
392 | c += scnprintf(buf + c, len - c, "%c", *p); |
||
393 | else |
||
394 | c += scnprintf(buf + c, len - c, "\\x%02x", *p & 0xff); |
||
395 | return c; |
||
396 | } |
||
397 | |||
398 | |||
399 | { |
||
400 | int c = 0; |
||
401 | const char *board; /* Board Name is optional */ |
||
402 | |||
403 | |||
404 | dmi_get_system_info(DMI_SYS_VENDOR)); |
||
405 | c += scnprintf(buf + c, len - c, " "); |
||
406 | c += print_filtered(buf + c, len - c, |
||
407 | dmi_get_system_info(DMI_PRODUCT_NAME)); |
||
408 | |||
409 | |||
410 | if (board) { |
||
411 | c += scnprintf(buf + c, len - c, "/"); |
||
412 | c += print_filtered(buf + c, len - c, board); |
||
413 | } |
||
414 | c += scnprintf(buf + c, len - c, ", BIOS "); |
||
415 | c += print_filtered(buf + c, len - c, |
||
416 | dmi_get_system_info(DMI_BIOS_VERSION)); |
||
417 | c += scnprintf(buf + c, len - c, " "); |
||
418 | c += print_filtered(buf + c, len - c, |
||
419 | dmi_get_system_info(DMI_BIOS_DATE)); |
||
420 | } |
||
421 | |||
422 | |||
423 | * Check for DMI/SMBIOS headers in the system firmware image. Any |
||
424 | * SMBIOS header must start 16 bytes before the DMI header, so take a |
||
425 | * 32 byte buffer and check for DMI at offset 16 and SMBIOS at offset |
||
426 | * 0. If the DMI header is present, set dmi_ver accordingly (SMBIOS |
||
427 | * takes precedence) and return 0. Otherwise return 1. |
||
428 | */ |
||
429 | static int __init dmi_present(const u8 *buf) |
||
430 | { |
||
431 | int smbios_ver; |
||
432 | |||
433 | |||
434 | buf[5] < 32 && dmi_checksum(buf, buf[5])) { |
||
435 | smbios_ver = (buf[6] << 8) + buf[7]; |
||
436 | |||
437 | |||
438 | switch (smbios_ver) { |
||
439 | case 0x021F: |
||
440 | case 0x0221: |
||
441 | pr_debug("SMBIOS version fixup(2.%d->2.%d)\n", |
||
442 | smbios_ver & 0xFF, 3); |
||
443 | smbios_ver = 0x0203; |
||
444 | break; |
||
445 | case 0x0233: |
||
446 | pr_debug("SMBIOS version fixup(2.%d->2.%d)\n", 51, 6); |
||
447 | smbios_ver = 0x0206; |
||
448 | break; |
||
449 | } |
||
450 | } else { |
||
451 | smbios_ver = 0; |
||
452 | } |
||
453 | |||
454 | |||
455 | |||
456 | |||
457 | dmi_num = (buf[13] << 8) | buf[12]; |
||
458 | dmi_len = (buf[7] << 8) | buf[6]; |
||
459 | dmi_base = (buf[11] << 24) | (buf[10] << 16) | |
||
460 | (buf[9] << 8) | buf[8]; |
||
461 | |||
462 | |||
463 | if (smbios_ver) { |
||
464 | dmi_ver = smbios_ver; |
||
465 | pr_info("SMBIOS %d.%d present.\n", |
||
466 | dmi_ver >> 8, dmi_ver & 0xFF); |
||
467 | } else { |
||
468 | dmi_ver = (buf[14] & 0xF0) << 4 | |
||
469 | (buf[14] & 0x0F); |
||
470 | pr_info("Legacy DMI %d.%d present.\n", |
||
471 | dmi_ver >> 8, dmi_ver & 0xFF); |
||
472 | } |
||
473 | dmi_format_ids(dmi_ids_string, sizeof(dmi_ids_string)); |
||
474 | printk(KERN_DEBUG "DMI: %s\n", dmi_ids_string); |
||
475 | return 0; |
||
476 | } |
||
477 | } |
||
478 | |||
479 | |||
480 | } |
||
481 | |||
482 | |||
483 | { |
||
484 | char __iomem *p, *q; |
||
485 | char buf[32]; |
||
486 | |||
487 | |||
488 | |||
489 | |||
490 | |||
491 | |||
492 | * Iterate over all possible DMI header addresses q. |
||
493 | * Maintain the 32 bytes around q in buf. On the |
||
494 | * first iteration, substitute zero for the |
||
495 | * out-of-range bytes so there is no chance of falsely |
||
496 | * detecting an SMBIOS header. |
||
497 | */ |
||
498 | memset(buf, 0, 16); |
||
499 | for (q = p; q < p + 0x10000; q += 16) { |
||
500 | memcpy(buf + 16, q, 16); |
||
501 | if (!dmi_present(buf)) { |
||
502 | dmi_available = 1; |
||
503 | goto out; |
||
504 | } |
||
505 | memcpy(buf, buf + 16, 16); |
||
506 | } |
||
507 | error: |
||
508 | pr_info("DMI not present or invalid.\n"); |
||
509 | out: |
||
510 | dmi_initialized = 1; |
||
511 | } |
||
512 | |||
513 | |||
514 | /** |
||
515 | * dmi_matches - check if dmi_system_id structure matches system DMI data |
||
516 | * @dmi: pointer to the dmi_system_id structure to check |
||
517 | */ |
||
518 | static bool dmi_matches(const struct dmi_system_id *dmi) |
||
519 | { |
||
520 | int i; |
||
521 | |||
522 | |||
523 | |||
524 | |||
525 | int s = dmi->matches[i].slot; |
||
526 | if (s == DMI_NONE) |
||
527 | break; |
||
528 | if (dmi_ident[s]) { |
||
529 | if (!dmi->matches[i].exact_match && |
||
530 | strstr(dmi_ident[s], dmi->matches[i].substr)) |
||
531 | continue; |
||
532 | else if (dmi->matches[i].exact_match && |
||
533 | !strcmp(dmi_ident[s], dmi->matches[i].substr)) |
||
534 | continue; |
||
535 | } |
||
536 | |||
537 | |||
538 | return false; |
||
539 | } |
||
540 | return true; |
||
541 | } |
||
542 | |||
543 | |||
544 | * dmi_is_end_of_table - check for end-of-table marker |
||
545 | * @dmi: pointer to the dmi_system_id structure to check |
||
546 | */ |
||
547 | static bool dmi_is_end_of_table(const struct dmi_system_id *dmi) |
||
548 | { |
||
549 | return dmi->matches[0].slot == DMI_NONE; |
||
550 | } |
||
551 | |||
552 | |||
553 | * dmi_check_system - check system DMI data |
||
554 | * @list: array of dmi_system_id structures to match against |
||
555 | * All non-null elements of the list must match |
||
556 | * their slot's (field index's) data (i.e., each |
||
557 | * list string must be a substring of the specified |
||
558 | * DMI slot's string data) to be considered a |
||
559 | * successful match. |
||
560 | * |
||
561 | * Walk the blacklist table running matching functions until someone |
||
562 | * returns non zero or we hit the end. Callback function is called for |
||
563 | * each successful match. Returns the number of matches. |
||
564 | */ |
||
565 | int dmi_check_system(const struct dmi_system_id *list) |
||
566 | { |
||
567 | int count = 0; |
||
568 | const struct dmi_system_id *d; |
||
569 | |||
570 | |||
571 | if (dmi_matches(d)) { |
||
572 | count++; |
||
573 | if (d->callback && d->callback(d)) |
||
574 | break; |
||
575 | } |
||
576 | |||
577 | |||
578 | } |
||
579 | EXPORT_SYMBOL(dmi_check_system); |
||
580 | |||
581 | |||
582 | * dmi_get_system_info - return DMI data value |
||
583 | * @field: data index (see enum dmi_field) |
||
584 | * |
||
585 | * Returns one DMI data value, can be used to perform |
||
586 | * complex DMI data checks. |
||
587 | */ |
||
588 | const char *dmi_get_system_info(int field) |
||
589 | { |
||
590 | return dmi_ident[field]; |
||
591 | } |
||
592 | EXPORT_SYMBOL(dmi_get_system_info); |
||
593 | /** |
||
594 | * dmi_find_device - find onboard device by type/name |
||
595 | * @type: device type or %DMI_DEV_TYPE_ANY to match all device types |
||
596 | * @name: device name string or %NULL to match all |
||
597 | * @from: previous device found in search, or %NULL for new search. |
||
598 | * |
||
599 | * Iterates through the list of known onboard devices. If a device is |
||
600 | * found with a matching @vendor and @device, a pointer to its device |
||
601 | * structure is returned. Otherwise, %NULL is returned. |
||
602 | * A new search is initiated by passing %NULL as the @from argument. |
||
603 | * If @from is not %NULL, searches continue from next device. |
||
604 | */ |
||
605 | const struct dmi_device *dmi_find_device(int type, const char *name, |
||
606 | const struct dmi_device *from) |
||
607 | { |
||
608 | const struct list_head *head = from ? &from->list : &dmi_devices; |
||
609 | struct list_head *d; |
||
610 | |||
611 | |||
612 | const struct dmi_device *dev = |
||
613 | list_entry(d, struct dmi_device, list); |
||
614 | |||
615 | |||
616 | ((name == NULL) || (strcmp(dev->name, name) == 0))) |
||
617 | return dev; |
||
618 | } |
||
619 | |||
620 | |||
621 | } |
||
622 | EXPORT_SYMBOL(dmi_find_device);>>><>><>><>><>><>><>><>>=>>>>>>=>> |
||
623 |