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