Commit | Line | Data |
---|---|---|
1da177e4 | 1 | #include <linux/types.h> |
1da177e4 LT |
2 | #include <linux/string.h> |
3 | #include <linux/init.h> | |
4 | #include <linux/module.h> | |
1da177e4 | 5 | #include <linux/dmi.h> |
3ed3bce8 | 6 | #include <linux/efi.h> |
1da177e4 | 7 | #include <linux/bootmem.h> |
e9928674 | 8 | #include <linux/slab.h> |
f2d3efed | 9 | #include <asm/dmi.h> |
1da177e4 | 10 | |
cb5dd7c1 PJ |
11 | /* |
12 | * DMI stands for "Desktop Management Interface". It is part | |
13 | * of and an antecedent to, SMBIOS, which stands for System | |
14 | * Management BIOS. See further: http://www.dmtf.org/standards | |
15 | */ | |
79da4721 PW |
16 | static char dmi_empty_string[] = " "; |
17 | ||
9a22b6e7 IM |
18 | /* |
19 | * Catch too early calls to dmi_check_system(): | |
20 | */ | |
21 | static int dmi_initialized; | |
22 | ||
f3069ae9 | 23 | static const char * __init dmi_string_nosave(const struct dmi_header *dm, u8 s) |
1da177e4 | 24 | { |
1855256c | 25 | const u8 *bp = ((u8 *) dm) + dm->length; |
1249c513 | 26 | |
c3c7120d | 27 | if (s) { |
1da177e4 | 28 | s--; |
c3c7120d AP |
29 | while (s > 0 && *bp) { |
30 | bp += strlen(bp) + 1; | |
31 | s--; | |
32 | } | |
33 | ||
34 | if (*bp != 0) { | |
79da4721 PW |
35 | size_t len = strlen(bp)+1; |
36 | size_t cmp_len = len > 8 ? 8 : len; | |
37 | ||
38 | if (!memcmp(bp, dmi_empty_string, cmp_len)) | |
39 | return dmi_empty_string; | |
f3069ae9 | 40 | return bp; |
c3c7120d | 41 | } |
4f705ae3 | 42 | } |
c3c7120d | 43 | |
f3069ae9 JD |
44 | return ""; |
45 | } | |
46 | ||
47 | static char * __init dmi_string(const struct dmi_header *dm, u8 s) | |
48 | { | |
49 | const char *bp = dmi_string_nosave(dm, s); | |
50 | char *str; | |
51 | size_t len; | |
52 | ||
53 | if (bp == dmi_empty_string) | |
54 | return dmi_empty_string; | |
55 | ||
56 | len = strlen(bp) + 1; | |
57 | str = dmi_alloc(len); | |
58 | if (str != NULL) | |
59 | strcpy(str, bp); | |
60 | else | |
61 | printk(KERN_ERR "dmi_string: cannot allocate %Zu bytes.\n", len); | |
62 | ||
c3c7120d | 63 | return str; |
1da177e4 LT |
64 | } |
65 | ||
66 | /* | |
67 | * We have to be cautious here. We have seen BIOSes with DMI pointers | |
68 | * pointing to completely the wrong place for example | |
69 | */ | |
7fce084a | 70 | static void dmi_table(u8 *buf, int len, int num, |
e7a19c56 JD |
71 | void (*decode)(const struct dmi_header *, void *), |
72 | void *private_data) | |
1da177e4 | 73 | { |
7fce084a | 74 | u8 *data = buf; |
1249c513 | 75 | int i = 0; |
4f705ae3 | 76 | |
1da177e4 | 77 | /* |
4f705ae3 BH |
78 | * Stop when we see all the items the table claimed to have |
79 | * OR we run off the end of the table (also happens) | |
80 | */ | |
1249c513 | 81 | while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) { |
1855256c JG |
82 | const struct dmi_header *dm = (const struct dmi_header *)data; |
83 | ||
1da177e4 | 84 | /* |
8638545c AC |
85 | * We want to know the total length (formatted area and |
86 | * strings) before decoding to make sure we won't run off the | |
87 | * table in dmi_decode or dmi_string | |
1da177e4 | 88 | */ |
1249c513 AP |
89 | data += dm->length; |
90 | while ((data - buf < len - 1) && (data[0] || data[1])) | |
1da177e4 | 91 | data++; |
1249c513 | 92 | if (data - buf < len - 1) |
e7a19c56 | 93 | decode(dm, private_data); |
1249c513 | 94 | data += 2; |
1da177e4 LT |
95 | i++; |
96 | } | |
7fce084a JD |
97 | } |
98 | ||
99 | static u32 dmi_base; | |
100 | static u16 dmi_len; | |
101 | static u16 dmi_num; | |
102 | ||
e7a19c56 JD |
103 | static int __init dmi_walk_early(void (*decode)(const struct dmi_header *, |
104 | void *)) | |
7fce084a JD |
105 | { |
106 | u8 *buf; | |
107 | ||
108 | buf = dmi_ioremap(dmi_base, dmi_len); | |
109 | if (buf == NULL) | |
110 | return -1; | |
111 | ||
e7a19c56 | 112 | dmi_table(buf, dmi_len, dmi_num, decode, NULL); |
7fce084a JD |
113 | |
114 | dmi_iounmap(buf, dmi_len); | |
1da177e4 LT |
115 | return 0; |
116 | } | |
117 | ||
1855256c | 118 | static int __init dmi_checksum(const u8 *buf) |
1da177e4 | 119 | { |
1249c513 | 120 | u8 sum = 0; |
1da177e4 | 121 | int a; |
4f705ae3 | 122 | |
1249c513 AP |
123 | for (a = 0; a < 15; a++) |
124 | sum += buf[a]; | |
125 | ||
126 | return sum == 0; | |
1da177e4 LT |
127 | } |
128 | ||
1da177e4 | 129 | static char *dmi_ident[DMI_STRING_MAX]; |
ebad6a42 | 130 | static LIST_HEAD(dmi_devices); |
4f5c791a | 131 | int dmi_available; |
1da177e4 LT |
132 | |
133 | /* | |
134 | * Save a DMI string | |
135 | */ | |
1855256c | 136 | static void __init dmi_save_ident(const struct dmi_header *dm, int slot, int string) |
1da177e4 | 137 | { |
1855256c JG |
138 | const char *d = (const char*) dm; |
139 | char *p; | |
1249c513 | 140 | |
1da177e4 LT |
141 | if (dmi_ident[slot]) |
142 | return; | |
1249c513 | 143 | |
c3c7120d AP |
144 | p = dmi_string(dm, d[string]); |
145 | if (p == NULL) | |
146 | return; | |
147 | ||
148 | dmi_ident[slot] = p; | |
1da177e4 LT |
149 | } |
150 | ||
1855256c | 151 | static void __init dmi_save_uuid(const struct dmi_header *dm, int slot, int index) |
4f5c791a | 152 | { |
1855256c | 153 | const u8 *d = (u8*) dm + index; |
4f5c791a LP |
154 | char *s; |
155 | int is_ff = 1, is_00 = 1, i; | |
156 | ||
157 | if (dmi_ident[slot]) | |
158 | return; | |
159 | ||
160 | for (i = 0; i < 16 && (is_ff || is_00); i++) { | |
161 | if(d[i] != 0x00) is_ff = 0; | |
162 | if(d[i] != 0xFF) is_00 = 0; | |
163 | } | |
164 | ||
165 | if (is_ff || is_00) | |
166 | return; | |
167 | ||
168 | s = dmi_alloc(16*2+4+1); | |
169 | if (!s) | |
170 | return; | |
171 | ||
bc058f65 | 172 | sprintf(s, "%pUB", d); |
4f5c791a LP |
173 | |
174 | dmi_ident[slot] = s; | |
175 | } | |
176 | ||
1855256c | 177 | static void __init dmi_save_type(const struct dmi_header *dm, int slot, int index) |
4f5c791a | 178 | { |
1855256c | 179 | const u8 *d = (u8*) dm + index; |
4f5c791a LP |
180 | char *s; |
181 | ||
182 | if (dmi_ident[slot]) | |
183 | return; | |
184 | ||
185 | s = dmi_alloc(4); | |
186 | if (!s) | |
187 | return; | |
188 | ||
189 | sprintf(s, "%u", *d & 0x7F); | |
190 | dmi_ident[slot] = s; | |
191 | } | |
192 | ||
f3069ae9 JD |
193 | static void __init dmi_save_one_device(int type, const char *name) |
194 | { | |
195 | struct dmi_device *dev; | |
196 | ||
197 | /* No duplicate device */ | |
198 | if (dmi_find_device(type, name, NULL)) | |
199 | return; | |
200 | ||
201 | dev = dmi_alloc(sizeof(*dev) + strlen(name) + 1); | |
202 | if (!dev) { | |
203 | printk(KERN_ERR "dmi_save_one_device: out of memory.\n"); | |
204 | return; | |
205 | } | |
206 | ||
207 | dev->type = type; | |
208 | strcpy((char *)(dev + 1), name); | |
209 | dev->name = (char *)(dev + 1); | |
210 | dev->device_data = NULL; | |
211 | list_add(&dev->list, &dmi_devices); | |
212 | } | |
213 | ||
1855256c | 214 | static void __init dmi_save_devices(const struct dmi_header *dm) |
ebad6a42 AP |
215 | { |
216 | int i, count = (dm->length - sizeof(struct dmi_header)) / 2; | |
ebad6a42 AP |
217 | |
218 | for (i = 0; i < count; i++) { | |
1855256c | 219 | const char *d = (char *)(dm + 1) + (i * 2); |
ebad6a42 AP |
220 | |
221 | /* Skip disabled device */ | |
222 | if ((*d & 0x80) == 0) | |
223 | continue; | |
224 | ||
f3069ae9 | 225 | dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d + 1))); |
2e0c1f6c SM |
226 | } |
227 | } | |
228 | ||
1855256c | 229 | static void __init dmi_save_oem_strings_devices(const struct dmi_header *dm) |
2e0c1f6c SM |
230 | { |
231 | int i, count = *(u8 *)(dm + 1); | |
232 | struct dmi_device *dev; | |
233 | ||
234 | for (i = 1; i <= count; i++) { | |
79da4721 PW |
235 | char *devname = dmi_string(dm, i); |
236 | ||
43fe105a | 237 | if (devname == dmi_empty_string) |
79da4721 | 238 | continue; |
79da4721 | 239 | |
2e0c1f6c SM |
240 | dev = dmi_alloc(sizeof(*dev)); |
241 | if (!dev) { | |
242 | printk(KERN_ERR | |
243 | "dmi_save_oem_strings_devices: out of memory.\n"); | |
244 | break; | |
245 | } | |
246 | ||
247 | dev->type = DMI_DEV_TYPE_OEM_STRING; | |
79da4721 | 248 | dev->name = devname; |
2e0c1f6c | 249 | dev->device_data = NULL; |
ebad6a42 AP |
250 | |
251 | list_add(&dev->list, &dmi_devices); | |
252 | } | |
253 | } | |
254 | ||
1855256c | 255 | static void __init dmi_save_ipmi_device(const struct dmi_header *dm) |
ebad6a42 AP |
256 | { |
257 | struct dmi_device *dev; | |
258 | void * data; | |
259 | ||
e9928674 | 260 | data = dmi_alloc(dm->length); |
ebad6a42 AP |
261 | if (data == NULL) { |
262 | printk(KERN_ERR "dmi_save_ipmi_device: out of memory.\n"); | |
263 | return; | |
264 | } | |
265 | ||
266 | memcpy(data, dm, dm->length); | |
267 | ||
e9928674 | 268 | dev = dmi_alloc(sizeof(*dev)); |
ebad6a42 AP |
269 | if (!dev) { |
270 | printk(KERN_ERR "dmi_save_ipmi_device: out of memory.\n"); | |
271 | return; | |
272 | } | |
273 | ||
274 | dev->type = DMI_DEV_TYPE_IPMI; | |
275 | dev->name = "IPMI controller"; | |
276 | dev->device_data = data; | |
277 | ||
abd24df8 | 278 | list_add_tail(&dev->list, &dmi_devices); |
ebad6a42 AP |
279 | } |
280 | ||
b4bd7d59 WVS |
281 | static void __init dmi_save_extended_devices(const struct dmi_header *dm) |
282 | { | |
283 | const u8 *d = (u8*) dm + 5; | |
b4bd7d59 WVS |
284 | |
285 | /* Skip disabled device */ | |
286 | if ((*d & 0x80) == 0) | |
287 | return; | |
288 | ||
f3069ae9 | 289 | dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d - 1))); |
b4bd7d59 WVS |
290 | } |
291 | ||
1da177e4 LT |
292 | /* |
293 | * Process a DMI table entry. Right now all we care about are the BIOS | |
294 | * and machine entries. For 2.5 we should pull the smbus controller info | |
295 | * out of here. | |
296 | */ | |
e7a19c56 | 297 | static void __init dmi_decode(const struct dmi_header *dm, void *dummy) |
1da177e4 | 298 | { |
1249c513 | 299 | switch(dm->type) { |
ebad6a42 | 300 | case 0: /* BIOS Information */ |
1249c513 | 301 | dmi_save_ident(dm, DMI_BIOS_VENDOR, 4); |
1249c513 | 302 | dmi_save_ident(dm, DMI_BIOS_VERSION, 5); |
1249c513 AP |
303 | dmi_save_ident(dm, DMI_BIOS_DATE, 8); |
304 | break; | |
ebad6a42 | 305 | case 1: /* System Information */ |
1249c513 | 306 | dmi_save_ident(dm, DMI_SYS_VENDOR, 4); |
1249c513 | 307 | dmi_save_ident(dm, DMI_PRODUCT_NAME, 5); |
1249c513 | 308 | dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6); |
1249c513 | 309 | dmi_save_ident(dm, DMI_PRODUCT_SERIAL, 7); |
4f5c791a | 310 | dmi_save_uuid(dm, DMI_PRODUCT_UUID, 8); |
1249c513 | 311 | break; |
ebad6a42 | 312 | case 2: /* Base Board Information */ |
1249c513 | 313 | dmi_save_ident(dm, DMI_BOARD_VENDOR, 4); |
1249c513 | 314 | dmi_save_ident(dm, DMI_BOARD_NAME, 5); |
1249c513 | 315 | dmi_save_ident(dm, DMI_BOARD_VERSION, 6); |
4f5c791a LP |
316 | dmi_save_ident(dm, DMI_BOARD_SERIAL, 7); |
317 | dmi_save_ident(dm, DMI_BOARD_ASSET_TAG, 8); | |
318 | break; | |
319 | case 3: /* Chassis Information */ | |
320 | dmi_save_ident(dm, DMI_CHASSIS_VENDOR, 4); | |
321 | dmi_save_type(dm, DMI_CHASSIS_TYPE, 5); | |
322 | dmi_save_ident(dm, DMI_CHASSIS_VERSION, 6); | |
323 | dmi_save_ident(dm, DMI_CHASSIS_SERIAL, 7); | |
324 | dmi_save_ident(dm, DMI_CHASSIS_ASSET_TAG, 8); | |
1249c513 | 325 | break; |
ebad6a42 AP |
326 | case 10: /* Onboard Devices Information */ |
327 | dmi_save_devices(dm); | |
328 | break; | |
2e0c1f6c SM |
329 | case 11: /* OEM Strings */ |
330 | dmi_save_oem_strings_devices(dm); | |
331 | break; | |
ebad6a42 AP |
332 | case 38: /* IPMI Device Information */ |
333 | dmi_save_ipmi_device(dm); | |
b4bd7d59 WVS |
334 | break; |
335 | case 41: /* Onboard Devices Extended Information */ | |
336 | dmi_save_extended_devices(dm); | |
1da177e4 LT |
337 | } |
338 | } | |
339 | ||
1855256c | 340 | static int __init dmi_present(const char __iomem *p) |
1da177e4 | 341 | { |
61e032fa | 342 | u8 buf[15]; |
1855256c | 343 | |
3ed3bce8 MD |
344 | memcpy_fromio(buf, p, 15); |
345 | if ((memcmp(buf, "_DMI_", 5) == 0) && dmi_checksum(buf)) { | |
7fce084a JD |
346 | dmi_num = (buf[13] << 8) | buf[12]; |
347 | dmi_len = (buf[7] << 8) | buf[6]; | |
348 | dmi_base = (buf[11] << 24) | (buf[10] << 16) | | |
3ed3bce8 | 349 | (buf[9] << 8) | buf[8]; |
61e032fa | 350 | |
3ed3bce8 MD |
351 | /* |
352 | * DMI version 0.0 means that the real version is taken from | |
353 | * the SMBIOS version, which we don't know at this point. | |
354 | */ | |
355 | if (buf[14] != 0) | |
356 | printk(KERN_INFO "DMI %d.%d present.\n", | |
357 | buf[14] >> 4, buf[14] & 0xF); | |
358 | else | |
359 | printk(KERN_INFO "DMI present.\n"); | |
7fce084a | 360 | if (dmi_walk_early(dmi_decode) == 0) |
3ed3bce8 MD |
361 | return 0; |
362 | } | |
363 | return 1; | |
364 | } | |
61e032fa | 365 | |
3ed3bce8 MD |
366 | void __init dmi_scan_machine(void) |
367 | { | |
368 | char __iomem *p, *q; | |
369 | int rc; | |
370 | ||
371 | if (efi_enabled) { | |
b2c99e3c | 372 | if (efi.smbios == EFI_INVALID_TABLE_ADDR) |
9a22b6e7 | 373 | goto error; |
3ed3bce8 | 374 | |
4f5c791a LP |
375 | /* This is called as a core_initcall() because it isn't |
376 | * needed during early boot. This also means we can | |
377 | * iounmap the space when we're done with it. | |
378 | */ | |
b2c99e3c | 379 | p = dmi_ioremap(efi.smbios, 32); |
3ed3bce8 | 380 | if (p == NULL) |
9a22b6e7 | 381 | goto error; |
3ed3bce8 MD |
382 | |
383 | rc = dmi_present(p + 0x10); /* offset of _DMI_ string */ | |
23dd842c | 384 | dmi_iounmap(p, 32); |
4f5c791a LP |
385 | if (!rc) { |
386 | dmi_available = 1; | |
9a22b6e7 | 387 | goto out; |
4f5c791a | 388 | } |
3ed3bce8 MD |
389 | } |
390 | else { | |
391 | /* | |
392 | * no iounmap() for that ioremap(); it would be a no-op, but | |
393 | * it's so early in setup that sucker gets confused into doing | |
394 | * what it shouldn't if we actually call it. | |
395 | */ | |
396 | p = dmi_ioremap(0xF0000, 0x10000); | |
397 | if (p == NULL) | |
9a22b6e7 | 398 | goto error; |
3ed3bce8 MD |
399 | |
400 | for (q = p; q < p + 0x10000; q += 16) { | |
401 | rc = dmi_present(q); | |
4f5c791a LP |
402 | if (!rc) { |
403 | dmi_available = 1; | |
0d64484f | 404 | dmi_iounmap(p, 0x10000); |
9a22b6e7 | 405 | goto out; |
4f5c791a | 406 | } |
61e032fa | 407 | } |
3212bff3 | 408 | dmi_iounmap(p, 0x10000); |
61e032fa | 409 | } |
9a22b6e7 IM |
410 | error: |
411 | printk(KERN_INFO "DMI not present or invalid.\n"); | |
412 | out: | |
413 | dmi_initialized = 1; | |
1da177e4 LT |
414 | } |
415 | ||
d7b1956f RW |
416 | /** |
417 | * dmi_matches - check if dmi_system_id structure matches system DMI data | |
418 | * @dmi: pointer to the dmi_system_id structure to check | |
419 | */ | |
420 | static bool dmi_matches(const struct dmi_system_id *dmi) | |
421 | { | |
422 | int i; | |
423 | ||
424 | WARN(!dmi_initialized, KERN_ERR "dmi check: not initialized yet.\n"); | |
425 | ||
426 | for (i = 0; i < ARRAY_SIZE(dmi->matches); i++) { | |
427 | int s = dmi->matches[i].slot; | |
428 | if (s == DMI_NONE) | |
75757507 | 429 | break; |
d7b1956f RW |
430 | if (dmi_ident[s] |
431 | && strstr(dmi_ident[s], dmi->matches[i].substr)) | |
432 | continue; | |
433 | /* No match */ | |
434 | return false; | |
435 | } | |
436 | return true; | |
437 | } | |
438 | ||
75757507 DT |
439 | /** |
440 | * dmi_is_end_of_table - check for end-of-table marker | |
441 | * @dmi: pointer to the dmi_system_id structure to check | |
442 | */ | |
443 | static bool dmi_is_end_of_table(const struct dmi_system_id *dmi) | |
444 | { | |
445 | return dmi->matches[0].slot == DMI_NONE; | |
446 | } | |
447 | ||
1da177e4 LT |
448 | /** |
449 | * dmi_check_system - check system DMI data | |
450 | * @list: array of dmi_system_id structures to match against | |
b0ef371e RD |
451 | * All non-null elements of the list must match |
452 | * their slot's (field index's) data (i.e., each | |
453 | * list string must be a substring of the specified | |
454 | * DMI slot's string data) to be considered a | |
455 | * successful match. | |
1da177e4 LT |
456 | * |
457 | * Walk the blacklist table running matching functions until someone | |
458 | * returns non zero or we hit the end. Callback function is called for | |
b0ef371e | 459 | * each successful match. Returns the number of matches. |
1da177e4 | 460 | */ |
1855256c | 461 | int dmi_check_system(const struct dmi_system_id *list) |
1da177e4 | 462 | { |
d7b1956f RW |
463 | int count = 0; |
464 | const struct dmi_system_id *d; | |
465 | ||
75757507 | 466 | for (d = list; !dmi_is_end_of_table(d); d++) |
d7b1956f RW |
467 | if (dmi_matches(d)) { |
468 | count++; | |
469 | if (d->callback && d->callback(d)) | |
470 | break; | |
1da177e4 | 471 | } |
1da177e4 LT |
472 | |
473 | return count; | |
474 | } | |
1da177e4 LT |
475 | EXPORT_SYMBOL(dmi_check_system); |
476 | ||
d7b1956f RW |
477 | /** |
478 | * dmi_first_match - find dmi_system_id structure matching system DMI data | |
479 | * @list: array of dmi_system_id structures to match against | |
480 | * All non-null elements of the list must match | |
481 | * their slot's (field index's) data (i.e., each | |
482 | * list string must be a substring of the specified | |
483 | * DMI slot's string data) to be considered a | |
484 | * successful match. | |
485 | * | |
486 | * Walk the blacklist table until the first match is found. Return the | |
487 | * pointer to the matching entry or NULL if there's no match. | |
488 | */ | |
489 | const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list) | |
490 | { | |
491 | const struct dmi_system_id *d; | |
492 | ||
75757507 | 493 | for (d = list; !dmi_is_end_of_table(d); d++) |
d7b1956f RW |
494 | if (dmi_matches(d)) |
495 | return d; | |
496 | ||
497 | return NULL; | |
498 | } | |
499 | EXPORT_SYMBOL(dmi_first_match); | |
500 | ||
1da177e4 LT |
501 | /** |
502 | * dmi_get_system_info - return DMI data value | |
b0ef371e | 503 | * @field: data index (see enum dmi_field) |
1da177e4 LT |
504 | * |
505 | * Returns one DMI data value, can be used to perform | |
506 | * complex DMI data checks. | |
507 | */ | |
1855256c | 508 | const char *dmi_get_system_info(int field) |
1da177e4 LT |
509 | { |
510 | return dmi_ident[field]; | |
511 | } | |
e70c9d5e | 512 | EXPORT_SYMBOL(dmi_get_system_info); |
ebad6a42 | 513 | |
fd8cd7e1 | 514 | /** |
c2bacfc4 RD |
515 | * dmi_name_in_serial - Check if string is in the DMI product serial information |
516 | * @str: string to check for | |
fd8cd7e1 AK |
517 | */ |
518 | int dmi_name_in_serial(const char *str) | |
519 | { | |
520 | int f = DMI_PRODUCT_SERIAL; | |
521 | if (dmi_ident[f] && strstr(dmi_ident[f], str)) | |
522 | return 1; | |
523 | return 0; | |
524 | } | |
a1bae672 AK |
525 | |
526 | /** | |
527 | * dmi_name_in_vendors - Check if string is anywhere in the DMI vendor information. | |
528 | * @str: Case sensitive Name | |
529 | */ | |
1855256c | 530 | int dmi_name_in_vendors(const char *str) |
a1bae672 AK |
531 | { |
532 | static int fields[] = { DMI_BIOS_VENDOR, DMI_BIOS_VERSION, DMI_SYS_VENDOR, | |
533 | DMI_PRODUCT_NAME, DMI_PRODUCT_VERSION, DMI_BOARD_VENDOR, | |
534 | DMI_BOARD_NAME, DMI_BOARD_VERSION, DMI_NONE }; | |
535 | int i; | |
536 | for (i = 0; fields[i] != DMI_NONE; i++) { | |
537 | int f = fields[i]; | |
538 | if (dmi_ident[f] && strstr(dmi_ident[f], str)) | |
539 | return 1; | |
540 | } | |
541 | return 0; | |
542 | } | |
543 | EXPORT_SYMBOL(dmi_name_in_vendors); | |
544 | ||
ebad6a42 AP |
545 | /** |
546 | * dmi_find_device - find onboard device by type/name | |
547 | * @type: device type or %DMI_DEV_TYPE_ANY to match all device types | |
b0ef371e | 548 | * @name: device name string or %NULL to match all |
ebad6a42 AP |
549 | * @from: previous device found in search, or %NULL for new search. |
550 | * | |
551 | * Iterates through the list of known onboard devices. If a device is | |
552 | * found with a matching @vendor and @device, a pointer to its device | |
553 | * structure is returned. Otherwise, %NULL is returned. | |
b0ef371e | 554 | * A new search is initiated by passing %NULL as the @from argument. |
ebad6a42 AP |
555 | * If @from is not %NULL, searches continue from next device. |
556 | */ | |
1855256c JG |
557 | const struct dmi_device * dmi_find_device(int type, const char *name, |
558 | const struct dmi_device *from) | |
ebad6a42 | 559 | { |
1855256c JG |
560 | const struct list_head *head = from ? &from->list : &dmi_devices; |
561 | struct list_head *d; | |
ebad6a42 AP |
562 | |
563 | for(d = head->next; d != &dmi_devices; d = d->next) { | |
1855256c JG |
564 | const struct dmi_device *dev = |
565 | list_entry(d, struct dmi_device, list); | |
ebad6a42 AP |
566 | |
567 | if (((type == DMI_DEV_TYPE_ANY) || (dev->type == type)) && | |
568 | ((name == NULL) || (strcmp(dev->name, name) == 0))) | |
569 | return dev; | |
570 | } | |
571 | ||
572 | return NULL; | |
573 | } | |
574 | EXPORT_SYMBOL(dmi_find_device); | |
f083a329 AK |
575 | |
576 | /** | |
3e5cd1f2 TH |
577 | * dmi_get_date - parse a DMI date |
578 | * @field: data index (see enum dmi_field) | |
579 | * @yearp: optional out parameter for the year | |
580 | * @monthp: optional out parameter for the month | |
581 | * @dayp: optional out parameter for the day | |
f083a329 | 582 | * |
3e5cd1f2 TH |
583 | * The date field is assumed to be in the form resembling |
584 | * [mm[/dd]]/yy[yy] and the result is stored in the out | |
585 | * parameters any or all of which can be omitted. | |
586 | * | |
587 | * If the field doesn't exist, all out parameters are set to zero | |
588 | * and false is returned. Otherwise, true is returned with any | |
589 | * invalid part of date set to zero. | |
590 | * | |
591 | * On return, year, month and day are guaranteed to be in the | |
592 | * range of [0,9999], [0,12] and [0,31] respectively. | |
f083a329 | 593 | */ |
3e5cd1f2 | 594 | bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp) |
f083a329 | 595 | { |
3e5cd1f2 TH |
596 | int year = 0, month = 0, day = 0; |
597 | bool exists; | |
598 | const char *s, *y; | |
02c24fa8 | 599 | char *e; |
f083a329 | 600 | |
3e5cd1f2 TH |
601 | s = dmi_get_system_info(field); |
602 | exists = s; | |
603 | if (!exists) | |
604 | goto out; | |
f083a329 | 605 | |
3e5cd1f2 TH |
606 | /* |
607 | * Determine year first. We assume the date string resembles | |
608 | * mm/dd/yy[yy] but the original code extracted only the year | |
609 | * from the end. Keep the behavior in the spirit of no | |
610 | * surprises. | |
611 | */ | |
612 | y = strrchr(s, '/'); | |
613 | if (!y) | |
614 | goto out; | |
615 | ||
616 | y++; | |
617 | year = simple_strtoul(y, &e, 10); | |
618 | if (y != e && year < 100) { /* 2-digit year */ | |
f083a329 AK |
619 | year += 1900; |
620 | if (year < 1996) /* no dates < spec 1.0 */ | |
621 | year += 100; | |
622 | } | |
3e5cd1f2 TH |
623 | if (year > 9999) /* year should fit in %04d */ |
624 | year = 0; | |
625 | ||
626 | /* parse the mm and dd */ | |
627 | month = simple_strtoul(s, &e, 10); | |
628 | if (s == e || *e != '/' || !month || month > 12) { | |
629 | month = 0; | |
630 | goto out; | |
631 | } | |
f083a329 | 632 | |
3e5cd1f2 TH |
633 | s = e + 1; |
634 | day = simple_strtoul(s, &e, 10); | |
635 | if (s == y || s == e || *e != '/' || day > 31) | |
636 | day = 0; | |
637 | out: | |
638 | if (yearp) | |
639 | *yearp = year; | |
640 | if (monthp) | |
641 | *monthp = month; | |
642 | if (dayp) | |
643 | *dayp = day; | |
644 | return exists; | |
f083a329 | 645 | } |
3e5cd1f2 | 646 | EXPORT_SYMBOL(dmi_get_date); |
7fce084a JD |
647 | |
648 | /** | |
649 | * dmi_walk - Walk the DMI table and get called back for every record | |
650 | * @decode: Callback function | |
e7a19c56 | 651 | * @private_data: Private data to be passed to the callback function |
7fce084a JD |
652 | * |
653 | * Returns -1 when the DMI table can't be reached, 0 on success. | |
654 | */ | |
e7a19c56 JD |
655 | int dmi_walk(void (*decode)(const struct dmi_header *, void *), |
656 | void *private_data) | |
7fce084a JD |
657 | { |
658 | u8 *buf; | |
659 | ||
660 | if (!dmi_available) | |
661 | return -1; | |
662 | ||
663 | buf = ioremap(dmi_base, dmi_len); | |
664 | if (buf == NULL) | |
665 | return -1; | |
666 | ||
e7a19c56 | 667 | dmi_table(buf, dmi_len, dmi_num, decode, private_data); |
7fce084a JD |
668 | |
669 | iounmap(buf); | |
670 | return 0; | |
671 | } | |
672 | EXPORT_SYMBOL_GPL(dmi_walk); | |
d61c72e5 JS |
673 | |
674 | /** | |
675 | * dmi_match - compare a string to the dmi field (if exists) | |
c2bacfc4 RD |
676 | * @f: DMI field identifier |
677 | * @str: string to compare the DMI field to | |
d61c72e5 JS |
678 | * |
679 | * Returns true if the requested field equals to the str (including NULL). | |
680 | */ | |
681 | bool dmi_match(enum dmi_field f, const char *str) | |
682 | { | |
683 | const char *info = dmi_get_system_info(f); | |
684 | ||
685 | if (info == NULL || str == NULL) | |
686 | return info == str; | |
687 | ||
688 | return !strcmp(info, str); | |
689 | } | |
690 | EXPORT_SYMBOL_GPL(dmi_match); |