dmi_scan.c revision 84e383b322e5348db03be54ff64cc6da87003717
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/string.h> 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 58881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas#include <linux/ctype.h> 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/dmi.h> 73ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch#include <linux/efi.h> 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/bootmem.h> 9f2d3efedbecc04dc348d723e4c90b46731b3bb48Andi Kleen#include <asm/dmi.h> 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11cb5dd7c104c64d7ba8ff4dd3eec3d9b92c378937Paul Jackson/* 12cb5dd7c104c64d7ba8ff4dd3eec3d9b92c378937Paul Jackson * DMI stands for "Desktop Management Interface". It is part 13cb5dd7c104c64d7ba8ff4dd3eec3d9b92c378937Paul Jackson * of and an antecedent to, SMBIOS, which stands for System 14cb5dd7c104c64d7ba8ff4dd3eec3d9b92c378937Paul Jackson * Management BIOS. See further: http://www.dmtf.org/standards 15cb5dd7c104c64d7ba8ff4dd3eec3d9b92c378937Paul Jackson */ 1679da4721117fcf188b4b007b775738a530f574daParag Warudkarstatic char dmi_empty_string[] = " "; 1779da4721117fcf188b4b007b775738a530f574daParag Warudkar 189a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar/* 199a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar * Catch too early calls to dmi_check_system(): 209a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar */ 219a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnarstatic int dmi_initialized; 229a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar 23f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvarestatic const char * __init dmi_string_nosave(const struct dmi_header *dm, u8 s) 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 251855256c497ecfefc730df6032243f26855ce52cJeff Garzik const u8 *bp = ((u8 *) dm) + dm->length; 261249c5138f573890eae0c01f13d627094edcd55cAndrey Panin 27c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin if (s) { 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s--; 29c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin while (s > 0 && *bp) { 30c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin bp += strlen(bp) + 1; 31c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin s--; 32c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin } 33c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin 34c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin if (*bp != 0) { 3579da4721117fcf188b4b007b775738a530f574daParag Warudkar size_t len = strlen(bp)+1; 3679da4721117fcf188b4b007b775738a530f574daParag Warudkar size_t cmp_len = len > 8 ? 8 : len; 3779da4721117fcf188b4b007b775738a530f574daParag Warudkar 3879da4721117fcf188b4b007b775738a530f574daParag Warudkar if (!memcmp(bp, dmi_empty_string, cmp_len)) 3979da4721117fcf188b4b007b775738a530f574daParag Warudkar return dmi_empty_string; 40f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare return bp; 41c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin } 424f705ae3e94ffaafe8d35f71ff4d5c499bb06814Bjorn Helgaas } 43c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin 44f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare return ""; 45f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare} 46f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare 47f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvarestatic char * __init dmi_string(const struct dmi_header *dm, u8 s) 48f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare{ 49f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare const char *bp = dmi_string_nosave(dm, s); 50f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare char *str; 51f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare size_t len; 52f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare 53f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare if (bp == dmi_empty_string) 54f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare return dmi_empty_string; 55f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare 56f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare len = strlen(bp) + 1; 57f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare str = dmi_alloc(len); 58f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare if (str != NULL) 59f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare strcpy(str, bp); 60f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare else 61f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare printk(KERN_ERR "dmi_string: cannot allocate %Zu bytes.\n", len); 62f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare 63c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin return str; 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We have to be cautious here. We have seen BIOSes with DMI pointers 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * pointing to completely the wrong place for example 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 707fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvarestatic void dmi_table(u8 *buf, int len, int num, 71e7a19c5624c66afa8118b10cd59f87ee407646bcJean Delvare void (*decode)(const struct dmi_header *, void *), 72e7a19c5624c66afa8118b10cd59f87ee407646bcJean Delvare void *private_data) 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 747fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare u8 *data = buf; 751249c5138f573890eae0c01f13d627094edcd55cAndrey Panin int i = 0; 764f705ae3e94ffaafe8d35f71ff4d5c499bb06814Bjorn Helgaas 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 784f705ae3e94ffaafe8d35f71ff4d5c499bb06814Bjorn Helgaas * Stop when we see all the items the table claimed to have 794f705ae3e94ffaafe8d35f71ff4d5c499bb06814Bjorn Helgaas * OR we run off the end of the table (also happens) 804f705ae3e94ffaafe8d35f71ff4d5c499bb06814Bjorn Helgaas */ 811249c5138f573890eae0c01f13d627094edcd55cAndrey Panin while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) { 821855256c497ecfefc730df6032243f26855ce52cJeff Garzik const struct dmi_header *dm = (const struct dmi_header *)data; 831855256c497ecfefc730df6032243f26855ce52cJeff Garzik 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 858638545c3668231675dcf8f46afa7ed5930a6b02Alan Cox * We want to know the total length (formatted area and 868638545c3668231675dcf8f46afa7ed5930a6b02Alan Cox * strings) before decoding to make sure we won't run off the 878638545c3668231675dcf8f46afa7ed5930a6b02Alan Cox * table in dmi_decode or dmi_string 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 891249c5138f573890eae0c01f13d627094edcd55cAndrey Panin data += dm->length; 901249c5138f573890eae0c01f13d627094edcd55cAndrey Panin while ((data - buf < len - 1) && (data[0] || data[1])) 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data++; 921249c5138f573890eae0c01f13d627094edcd55cAndrey Panin if (data - buf < len - 1) 93e7a19c5624c66afa8118b10cd59f87ee407646bcJean Delvare decode(dm, private_data); 941249c5138f573890eae0c01f13d627094edcd55cAndrey Panin data += 2; 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i++; 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 977fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare} 987fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare 997fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvarestatic u32 dmi_base; 1007fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvarestatic u16 dmi_len; 1017fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvarestatic u16 dmi_num; 1027fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare 103e7a19c5624c66afa8118b10cd59f87ee407646bcJean Delvarestatic int __init dmi_walk_early(void (*decode)(const struct dmi_header *, 104e7a19c5624c66afa8118b10cd59f87ee407646bcJean Delvare void *)) 1057fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare{ 1067fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare u8 *buf; 1077fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare 1087fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare buf = dmi_ioremap(dmi_base, dmi_len); 1097fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare if (buf == NULL) 1107fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare return -1; 1117fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare 112e7a19c5624c66afa8118b10cd59f87ee407646bcJean Delvare dmi_table(buf, dmi_len, dmi_num, decode, NULL); 1137fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare 1147fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare dmi_iounmap(buf, dmi_len); 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1181855256c497ecfefc730df6032243f26855ce52cJeff Garzikstatic int __init dmi_checksum(const u8 *buf) 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1201249c5138f573890eae0c01f13d627094edcd55cAndrey Panin u8 sum = 0; 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int a; 1224f705ae3e94ffaafe8d35f71ff4d5c499bb06814Bjorn Helgaas 1231249c5138f573890eae0c01f13d627094edcd55cAndrey Panin for (a = 0; a < 15; a++) 1241249c5138f573890eae0c01f13d627094edcd55cAndrey Panin sum += buf[a]; 1251249c5138f573890eae0c01f13d627094edcd55cAndrey Panin 1261249c5138f573890eae0c01f13d627094edcd55cAndrey Panin return sum == 0; 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *dmi_ident[DMI_STRING_MAX]; 130ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Paninstatic LIST_HEAD(dmi_devices); 1314f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poetteringint dmi_available; 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Save a DMI string 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1361855256c497ecfefc730df6032243f26855ce52cJeff Garzikstatic void __init dmi_save_ident(const struct dmi_header *dm, int slot, int string) 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1381855256c497ecfefc730df6032243f26855ce52cJeff Garzik const char *d = (const char*) dm; 1391855256c497ecfefc730df6032243f26855ce52cJeff Garzik char *p; 1401249c5138f573890eae0c01f13d627094edcd55cAndrey Panin 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dmi_ident[slot]) 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1431249c5138f573890eae0c01f13d627094edcd55cAndrey Panin 144c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin p = dmi_string(dm, d[string]); 145c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin if (p == NULL) 146c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin return; 147c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin 148c3c7120d552989be94c9137989be5abb6da8954fAndrey Panin dmi_ident[slot] = p; 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1511855256c497ecfefc730df6032243f26855ce52cJeff Garzikstatic void __init dmi_save_uuid(const struct dmi_header *dm, int slot, int index) 1524f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering{ 1531855256c497ecfefc730df6032243f26855ce52cJeff Garzik const u8 *d = (u8*) dm + index; 1544f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering char *s; 1554f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering int is_ff = 1, is_00 = 1, i; 1564f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering 1574f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering if (dmi_ident[slot]) 1584f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering return; 1594f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering 1604f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering for (i = 0; i < 16 && (is_ff || is_00); i++) { 1614f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering if(d[i] != 0x00) is_ff = 0; 1624f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering if(d[i] != 0xFF) is_00 = 0; 1634f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering } 1644f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering 1654f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering if (is_ff || is_00) 1664f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering return; 1674f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering 1684f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering s = dmi_alloc(16*2+4+1); 1694f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering if (!s) 1704f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering return; 1714f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering 172bc058f65e8c7d83c139692e1c26513d3187dd744Joe Perches sprintf(s, "%pUB", d); 1734f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering 1744f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_ident[slot] = s; 1754f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering} 1764f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering 1771855256c497ecfefc730df6032243f26855ce52cJeff Garzikstatic void __init dmi_save_type(const struct dmi_header *dm, int slot, int index) 1784f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering{ 1791855256c497ecfefc730df6032243f26855ce52cJeff Garzik const u8 *d = (u8*) dm + index; 1804f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering char *s; 1814f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering 1824f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering if (dmi_ident[slot]) 1834f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering return; 1844f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering 1854f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering s = dmi_alloc(4); 1864f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering if (!s) 1874f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering return; 1884f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering 1894f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering sprintf(s, "%u", *d & 0x7F); 1904f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_ident[slot] = s; 1914f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering} 1924f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering 193f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvarestatic void __init dmi_save_one_device(int type, const char *name) 194f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare{ 195f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare struct dmi_device *dev; 196f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare 197f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare /* No duplicate device */ 198f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare if (dmi_find_device(type, name, NULL)) 199f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare return; 200f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare 201f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare dev = dmi_alloc(sizeof(*dev) + strlen(name) + 1); 202f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare if (!dev) { 203f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare printk(KERN_ERR "dmi_save_one_device: out of memory.\n"); 204f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare return; 205f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare } 206f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare 207f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare dev->type = type; 208f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare strcpy((char *)(dev + 1), name); 209f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare dev->name = (char *)(dev + 1); 210f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare dev->device_data = NULL; 211f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare list_add(&dev->list, &dmi_devices); 212f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare} 213f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare 2141855256c497ecfefc730df6032243f26855ce52cJeff Garzikstatic void __init dmi_save_devices(const struct dmi_header *dm) 215ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin{ 216ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin int i, count = (dm->length - sizeof(struct dmi_header)) / 2; 217ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 218ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin for (i = 0; i < count; i++) { 2191855256c497ecfefc730df6032243f26855ce52cJeff Garzik const char *d = (char *)(dm + 1) + (i * 2); 220ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 221ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin /* Skip disabled device */ 222ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin if ((*d & 0x80) == 0) 223ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin continue; 224ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 225f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d + 1))); 2262e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous } 2272e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous} 2282e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous 2291855256c497ecfefc730df6032243f26855ce52cJeff Garzikstatic void __init dmi_save_oem_strings_devices(const struct dmi_header *dm) 2302e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous{ 2312e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous int i, count = *(u8 *)(dm + 1); 2322e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous struct dmi_device *dev; 2332e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous 2342e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous for (i = 1; i <= count; i++) { 23579da4721117fcf188b4b007b775738a530f574daParag Warudkar char *devname = dmi_string(dm, i); 23679da4721117fcf188b4b007b775738a530f574daParag Warudkar 23743fe105a5c91b2f00ea7f900ed307fe980410612Jean Delvare if (devname == dmi_empty_string) 23879da4721117fcf188b4b007b775738a530f574daParag Warudkar continue; 23979da4721117fcf188b4b007b775738a530f574daParag Warudkar 2402e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous dev = dmi_alloc(sizeof(*dev)); 2412e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous if (!dev) { 2422e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous printk(KERN_ERR 2432e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous "dmi_save_oem_strings_devices: out of memory.\n"); 2442e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous break; 2452e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous } 2462e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous 2472e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous dev->type = DMI_DEV_TYPE_OEM_STRING; 24879da4721117fcf188b4b007b775738a530f574daParag Warudkar dev->name = devname; 2492e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous dev->device_data = NULL; 250ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 251ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin list_add(&dev->list, &dmi_devices); 252ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin } 253ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin} 254ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 2551855256c497ecfefc730df6032243f26855ce52cJeff Garzikstatic void __init dmi_save_ipmi_device(const struct dmi_header *dm) 256ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin{ 257ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin struct dmi_device *dev; 258ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin void * data; 259ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 260e99286744599a66195de4cd975d7ef4d643c2789Andi Kleen data = dmi_alloc(dm->length); 261ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin if (data == NULL) { 262ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin printk(KERN_ERR "dmi_save_ipmi_device: out of memory.\n"); 263ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin return; 264ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin } 265ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 266ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin memcpy(data, dm, dm->length); 267ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 268e99286744599a66195de4cd975d7ef4d643c2789Andi Kleen dev = dmi_alloc(sizeof(*dev)); 269ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin if (!dev) { 270ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin printk(KERN_ERR "dmi_save_ipmi_device: out of memory.\n"); 271ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin return; 272ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin } 273ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 274ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin dev->type = DMI_DEV_TYPE_IPMI; 275ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin dev->name = "IPMI controller"; 276ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin dev->device_data = data; 277ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 278abd24df828f1a72971db29d1b74fefae104ea9e2Carol Hebert list_add_tail(&dev->list, &dmi_devices); 279ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin} 280ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 281911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra Kstatic void __init dmi_save_dev_onboard(int instance, int segment, int bus, 282911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K int devfn, const char *name) 283911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K{ 284911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K struct dmi_dev_onboard *onboard_dev; 285911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K 286911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K onboard_dev = dmi_alloc(sizeof(*onboard_dev) + strlen(name) + 1); 287911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K if (!onboard_dev) { 288911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K printk(KERN_ERR "dmi_save_dev_onboard: out of memory.\n"); 289911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K return; 290911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K } 291911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K onboard_dev->instance = instance; 292911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K onboard_dev->segment = segment; 293911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K onboard_dev->bus = bus; 294911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K onboard_dev->devfn = devfn; 295911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K 296911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K strcpy((char *)&onboard_dev[1], name); 297911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K onboard_dev->dev.type = DMI_DEV_TYPE_DEV_ONBOARD; 298911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K onboard_dev->dev.name = (char *)&onboard_dev[1]; 299911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K onboard_dev->dev.device_data = onboard_dev; 300911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K 301911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K list_add(&onboard_dev->dev.list, &dmi_devices); 302911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K} 303911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K 304b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeckstatic void __init dmi_save_extended_devices(const struct dmi_header *dm) 305b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck{ 306b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck const u8 *d = (u8*) dm + 5; 307b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck 308b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck /* Skip disabled device */ 309b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck if ((*d & 0x80) == 0) 310b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck return; 311b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck 312911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K dmi_save_dev_onboard(*(d+1), *(u16 *)(d+2), *(d+4), *(d+5), 313911e1c9b05a8e3559a7aa89083930700a0b9e7eeNarendra K dmi_string_nosave(dm, *(d-1))); 314f3069ae9d76901d021362bb63d9ad6c5900dfc76Jean Delvare dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d - 1))); 315b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck} 316b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Process a DMI table entry. Right now all we care about are the BIOS 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and machine entries. For 2.5 we should pull the smbus controller info 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * out of here. 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 322e7a19c5624c66afa8118b10cd59f87ee407646bcJean Delvarestatic void __init dmi_decode(const struct dmi_header *dm, void *dummy) 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3241249c5138f573890eae0c01f13d627094edcd55cAndrey Panin switch(dm->type) { 325ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin case 0: /* BIOS Information */ 3261249c5138f573890eae0c01f13d627094edcd55cAndrey Panin dmi_save_ident(dm, DMI_BIOS_VENDOR, 4); 3271249c5138f573890eae0c01f13d627094edcd55cAndrey Panin dmi_save_ident(dm, DMI_BIOS_VERSION, 5); 3281249c5138f573890eae0c01f13d627094edcd55cAndrey Panin dmi_save_ident(dm, DMI_BIOS_DATE, 8); 3291249c5138f573890eae0c01f13d627094edcd55cAndrey Panin break; 330ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin case 1: /* System Information */ 3311249c5138f573890eae0c01f13d627094edcd55cAndrey Panin dmi_save_ident(dm, DMI_SYS_VENDOR, 4); 3321249c5138f573890eae0c01f13d627094edcd55cAndrey Panin dmi_save_ident(dm, DMI_PRODUCT_NAME, 5); 3331249c5138f573890eae0c01f13d627094edcd55cAndrey Panin dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6); 3341249c5138f573890eae0c01f13d627094edcd55cAndrey Panin dmi_save_ident(dm, DMI_PRODUCT_SERIAL, 7); 3354f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_save_uuid(dm, DMI_PRODUCT_UUID, 8); 3361249c5138f573890eae0c01f13d627094edcd55cAndrey Panin break; 337ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin case 2: /* Base Board Information */ 3381249c5138f573890eae0c01f13d627094edcd55cAndrey Panin dmi_save_ident(dm, DMI_BOARD_VENDOR, 4); 3391249c5138f573890eae0c01f13d627094edcd55cAndrey Panin dmi_save_ident(dm, DMI_BOARD_NAME, 5); 3401249c5138f573890eae0c01f13d627094edcd55cAndrey Panin dmi_save_ident(dm, DMI_BOARD_VERSION, 6); 3414f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_save_ident(dm, DMI_BOARD_SERIAL, 7); 3424f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_save_ident(dm, DMI_BOARD_ASSET_TAG, 8); 3434f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering break; 3444f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering case 3: /* Chassis Information */ 3454f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_save_ident(dm, DMI_CHASSIS_VENDOR, 4); 3464f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_save_type(dm, DMI_CHASSIS_TYPE, 5); 3474f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_save_ident(dm, DMI_CHASSIS_VERSION, 6); 3484f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_save_ident(dm, DMI_CHASSIS_SERIAL, 7); 3494f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_save_ident(dm, DMI_CHASSIS_ASSET_TAG, 8); 3501249c5138f573890eae0c01f13d627094edcd55cAndrey Panin break; 351ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin case 10: /* Onboard Devices Information */ 352ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin dmi_save_devices(dm); 353ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin break; 3542e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous case 11: /* OEM Strings */ 3552e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous dmi_save_oem_strings_devices(dm); 3562e0c1f6ce7b816f63fea2af3e5e2cb20c66430e9Shem Multinymous break; 357ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin case 38: /* IPMI Device Information */ 358ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin dmi_save_ipmi_device(dm); 359b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck break; 360b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck case 41: /* Onboard Devices Extended Information */ 361b4bd7d59451960d4e1d994c01581b31b08fe3720Wim Van Sebroeck dmi_save_extended_devices(dm); 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3658881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaasstatic void __init print_filtered(const char *info) 3668881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas{ 3678881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas const char *p; 3688881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas 3698881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas if (!info) 3708881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas return; 3718881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas 3728881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas for (p = info; *p; p++) 3738881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas if (isprint(*p)) 3748881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas printk(KERN_CONT "%c", *p); 3758881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas else 3768881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas printk(KERN_CONT "\\x%02x", *p & 0xff); 3778881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas} 3788881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas 3798881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaasstatic void __init dmi_dump_ids(void) 3808881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas{ 38184e383b322e5348db03be54ff64cc6da87003717Naga Chumbalkar const char *board; /* Board Name is optional */ 38284e383b322e5348db03be54ff64cc6da87003717Naga Chumbalkar 3838881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas printk(KERN_DEBUG "DMI: "); 38484e383b322e5348db03be54ff64cc6da87003717Naga Chumbalkar print_filtered(dmi_get_system_info(DMI_SYS_VENDOR)); 38584e383b322e5348db03be54ff64cc6da87003717Naga Chumbalkar printk(KERN_CONT " "); 3868881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas print_filtered(dmi_get_system_info(DMI_PRODUCT_NAME)); 38784e383b322e5348db03be54ff64cc6da87003717Naga Chumbalkar board = dmi_get_system_info(DMI_BOARD_NAME); 38884e383b322e5348db03be54ff64cc6da87003717Naga Chumbalkar if (board) { 38984e383b322e5348db03be54ff64cc6da87003717Naga Chumbalkar printk(KERN_CONT "/"); 39084e383b322e5348db03be54ff64cc6da87003717Naga Chumbalkar print_filtered(board); 39184e383b322e5348db03be54ff64cc6da87003717Naga Chumbalkar } 3928881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas printk(KERN_CONT ", BIOS "); 3938881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas print_filtered(dmi_get_system_info(DMI_BIOS_VERSION)); 3948881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas printk(KERN_CONT " "); 3958881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas print_filtered(dmi_get_system_info(DMI_BIOS_DATE)); 3968881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas printk(KERN_CONT "\n"); 3978881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas} 3988881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas 3991855256c497ecfefc730df6032243f26855ce52cJeff Garzikstatic int __init dmi_present(const char __iomem *p) 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 40161e032fa2f659fada02ede5087b46963a1c7de34Andrey Panin u8 buf[15]; 4021855256c497ecfefc730df6032243f26855ce52cJeff Garzik 4033ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch memcpy_fromio(buf, p, 15); 4043ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch if ((memcmp(buf, "_DMI_", 5) == 0) && dmi_checksum(buf)) { 4057fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare dmi_num = (buf[13] << 8) | buf[12]; 4067fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare dmi_len = (buf[7] << 8) | buf[6]; 4077fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare dmi_base = (buf[11] << 24) | (buf[10] << 16) | 4083ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch (buf[9] << 8) | buf[8]; 40961e032fa2f659fada02ede5087b46963a1c7de34Andrey Panin 4103ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch /* 4113ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch * DMI version 0.0 means that the real version is taken from 4123ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch * the SMBIOS version, which we don't know at this point. 4133ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch */ 4143ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch if (buf[14] != 0) 4153ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch printk(KERN_INFO "DMI %d.%d present.\n", 4163ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch buf[14] >> 4, buf[14] & 0xF); 4173ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch else 4183ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch printk(KERN_INFO "DMI present.\n"); 4198881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas if (dmi_walk_early(dmi_decode) == 0) { 4208881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas dmi_dump_ids(); 4213ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch return 0; 4228881cdceb25b4fcebfb17a9548ed80c22cf8b066Bjorn Helgaas } 4233ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch } 4243ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch return 1; 4253ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch} 42661e032fa2f659fada02ede5087b46963a1c7de34Andrey Panin 4273ed3bce846abc7ef460104b461cac793e41afe5eMatt Domschvoid __init dmi_scan_machine(void) 4283ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch{ 4293ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch char __iomem *p, *q; 4303ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch int rc; 4313ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch 4323ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch if (efi_enabled) { 433b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas if (efi.smbios == EFI_INVALID_TABLE_ADDR) 4349a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar goto error; 4353ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch 4364f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering /* This is called as a core_initcall() because it isn't 4374f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering * needed during early boot. This also means we can 4384f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering * iounmap the space when we're done with it. 4394f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering */ 440b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas p = dmi_ioremap(efi.smbios, 32); 4413ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch if (p == NULL) 4429a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar goto error; 4433ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch 4443ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch rc = dmi_present(p + 0x10); /* offset of _DMI_ string */ 44523dd842c0033dbb05248c42929c3c526c55386deTolentino, Matthew E dmi_iounmap(p, 32); 4464f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering if (!rc) { 4474f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_available = 1; 4489a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar goto out; 4494f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering } 4503ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch } 4513ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch else { 4523ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch /* 4533ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch * no iounmap() for that ioremap(); it would be a no-op, but 4543ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch * it's so early in setup that sucker gets confused into doing 4553ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch * what it shouldn't if we actually call it. 4563ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch */ 4573ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch p = dmi_ioremap(0xF0000, 0x10000); 4583ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch if (p == NULL) 4599a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar goto error; 4603ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch 4613ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch for (q = p; q < p + 0x10000; q += 16) { 4623ed3bce846abc7ef460104b461cac793e41afe5eMatt Domsch rc = dmi_present(q); 4634f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering if (!rc) { 4644f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering dmi_available = 1; 4650d64484f7ea12ca04211b497e94634c3d27cf3fbIngo Molnar dmi_iounmap(p, 0x10000); 4669a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar goto out; 4674f5c791a850e5305a5b1b48d0e4b4de248dc96f9Lennart Poettering } 46861e032fa2f659fada02ede5087b46963a1c7de34Andrey Panin } 4693212bff370c2f22e4987c6679ba485654cefb178Yinghai Lu dmi_iounmap(p, 0x10000); 47061e032fa2f659fada02ede5087b46963a1c7de34Andrey Panin } 4719a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar error: 4729a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar printk(KERN_INFO "DMI not present or invalid.\n"); 4739a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar out: 4749a22b6e76ba75fa0f3963cdec7829156d00a7173Ingo Molnar dmi_initialized = 1; 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 478d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * dmi_matches - check if dmi_system_id structure matches system DMI data 479d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * @dmi: pointer to the dmi_system_id structure to check 480d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki */ 481d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysockistatic bool dmi_matches(const struct dmi_system_id *dmi) 482d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki{ 483d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki int i; 484d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki 485d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki WARN(!dmi_initialized, KERN_ERR "dmi check: not initialized yet.\n"); 486d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki 487d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki for (i = 0; i < ARRAY_SIZE(dmi->matches); i++) { 488d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki int s = dmi->matches[i].slot; 489d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki if (s == DMI_NONE) 49075757507e014fa074d25d2883c4ab604999584bdDmitry Torokhov break; 491d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki if (dmi_ident[s] 492d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki && strstr(dmi_ident[s], dmi->matches[i].substr)) 493d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki continue; 494d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki /* No match */ 495d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki return false; 496d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki } 497d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki return true; 498d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki} 499d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki 500d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki/** 50175757507e014fa074d25d2883c4ab604999584bdDmitry Torokhov * dmi_is_end_of_table - check for end-of-table marker 50275757507e014fa074d25d2883c4ab604999584bdDmitry Torokhov * @dmi: pointer to the dmi_system_id structure to check 50375757507e014fa074d25d2883c4ab604999584bdDmitry Torokhov */ 50475757507e014fa074d25d2883c4ab604999584bdDmitry Torokhovstatic bool dmi_is_end_of_table(const struct dmi_system_id *dmi) 50575757507e014fa074d25d2883c4ab604999584bdDmitry Torokhov{ 50675757507e014fa074d25d2883c4ab604999584bdDmitry Torokhov return dmi->matches[0].slot == DMI_NONE; 50775757507e014fa074d25d2883c4ab604999584bdDmitry Torokhov} 50875757507e014fa074d25d2883c4ab604999584bdDmitry Torokhov 50975757507e014fa074d25d2883c4ab604999584bdDmitry Torokhov/** 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dmi_check_system - check system DMI data 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @list: array of dmi_system_id structures to match against 512b0ef371e3f9fa3b2571058be366a6780827ec0bfRandy Dunlap * All non-null elements of the list must match 513b0ef371e3f9fa3b2571058be366a6780827ec0bfRandy Dunlap * their slot's (field index's) data (i.e., each 514b0ef371e3f9fa3b2571058be366a6780827ec0bfRandy Dunlap * list string must be a substring of the specified 515b0ef371e3f9fa3b2571058be366a6780827ec0bfRandy Dunlap * DMI slot's string data) to be considered a 516b0ef371e3f9fa3b2571058be366a6780827ec0bfRandy Dunlap * successful match. 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Walk the blacklist table running matching functions until someone 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * returns non zero or we hit the end. Callback function is called for 520b0ef371e3f9fa3b2571058be366a6780827ec0bfRandy Dunlap * each successful match. Returns the number of matches. 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5221855256c497ecfefc730df6032243f26855ce52cJeff Garzikint dmi_check_system(const struct dmi_system_id *list) 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 524d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki int count = 0; 525d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki const struct dmi_system_id *d; 526d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki 52775757507e014fa074d25d2883c4ab604999584bdDmitry Torokhov for (d = list; !dmi_is_end_of_table(d); d++) 528d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki if (dmi_matches(d)) { 529d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki count++; 530d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki if (d->callback && d->callback(d)) 531d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki break; 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return count; 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(dmi_check_system); 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 539d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * dmi_first_match - find dmi_system_id structure matching system DMI data 540d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * @list: array of dmi_system_id structures to match against 541d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * All non-null elements of the list must match 542d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * their slot's (field index's) data (i.e., each 543d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * list string must be a substring of the specified 544d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * DMI slot's string data) to be considered a 545d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * successful match. 546d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * 547d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * Walk the blacklist table until the first match is found. Return the 548d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki * pointer to the matching entry or NULL if there's no match. 549d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki */ 550d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysockiconst struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list) 551d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki{ 552d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki const struct dmi_system_id *d; 553d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki 55475757507e014fa074d25d2883c4ab604999584bdDmitry Torokhov for (d = list; !dmi_is_end_of_table(d); d++) 555d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki if (dmi_matches(d)) 556d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki return d; 557d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki 558d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki return NULL; 559d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki} 560d7b1956fed33d30c4815e848fd7a143722916868Rafael J. WysockiEXPORT_SYMBOL(dmi_first_match); 561d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki 562d7b1956fed33d30c4815e848fd7a143722916868Rafael J. Wysocki/** 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dmi_get_system_info - return DMI data value 564b0ef371e3f9fa3b2571058be366a6780827ec0bfRandy Dunlap * @field: data index (see enum dmi_field) 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns one DMI data value, can be used to perform 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complex DMI data checks. 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5691855256c497ecfefc730df6032243f26855ce52cJeff Garzikconst char *dmi_get_system_info(int field) 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return dmi_ident[field]; 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 573e70c9d5e61c6cb2272c866fc1303e62975006752Dmitry TorokhovEXPORT_SYMBOL(dmi_get_system_info); 574ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 575fd8cd7e1919fc1c27fe2fdccd2a1cd32f791ef0fAlok Kataria/** 576c2bacfc44f4b8d03dbaad5d2dca2fb4161e81975Randy Dunlap * dmi_name_in_serial - Check if string is in the DMI product serial information 577c2bacfc44f4b8d03dbaad5d2dca2fb4161e81975Randy Dunlap * @str: string to check for 578fd8cd7e1919fc1c27fe2fdccd2a1cd32f791ef0fAlok Kataria */ 579fd8cd7e1919fc1c27fe2fdccd2a1cd32f791ef0fAlok Katariaint dmi_name_in_serial(const char *str) 580fd8cd7e1919fc1c27fe2fdccd2a1cd32f791ef0fAlok Kataria{ 581fd8cd7e1919fc1c27fe2fdccd2a1cd32f791ef0fAlok Kataria int f = DMI_PRODUCT_SERIAL; 582fd8cd7e1919fc1c27fe2fdccd2a1cd32f791ef0fAlok Kataria if (dmi_ident[f] && strstr(dmi_ident[f], str)) 583fd8cd7e1919fc1c27fe2fdccd2a1cd32f791ef0fAlok Kataria return 1; 584fd8cd7e1919fc1c27fe2fdccd2a1cd32f791ef0fAlok Kataria return 0; 585fd8cd7e1919fc1c27fe2fdccd2a1cd32f791ef0fAlok Kataria} 586a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen 587a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen/** 588a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen * dmi_name_in_vendors - Check if string is anywhere in the DMI vendor information. 589a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen * @str: Case sensitive Name 590a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen */ 5911855256c497ecfefc730df6032243f26855ce52cJeff Garzikint dmi_name_in_vendors(const char *str) 592a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen{ 593a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen static int fields[] = { DMI_BIOS_VENDOR, DMI_BIOS_VERSION, DMI_SYS_VENDOR, 594a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen DMI_PRODUCT_NAME, DMI_PRODUCT_VERSION, DMI_BOARD_VENDOR, 595a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen DMI_BOARD_NAME, DMI_BOARD_VERSION, DMI_NONE }; 596a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen int i; 597a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen for (i = 0; fields[i] != DMI_NONE; i++) { 598a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen int f = fields[i]; 599a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen if (dmi_ident[f] && strstr(dmi_ident[f], str)) 600a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen return 1; 601a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen } 602a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen return 0; 603a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen} 604a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi KleenEXPORT_SYMBOL(dmi_name_in_vendors); 605a1bae67243512ca30ceda48e3e24e25b543f8ab7Andi Kleen 606ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin/** 607ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin * dmi_find_device - find onboard device by type/name 608ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin * @type: device type or %DMI_DEV_TYPE_ANY to match all device types 609b0ef371e3f9fa3b2571058be366a6780827ec0bfRandy Dunlap * @name: device name string or %NULL to match all 610ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin * @from: previous device found in search, or %NULL for new search. 611ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin * 612ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin * Iterates through the list of known onboard devices. If a device is 613ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin * found with a matching @vendor and @device, a pointer to its device 614ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin * structure is returned. Otherwise, %NULL is returned. 615b0ef371e3f9fa3b2571058be366a6780827ec0bfRandy Dunlap * A new search is initiated by passing %NULL as the @from argument. 616ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin * If @from is not %NULL, searches continue from next device. 617ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin */ 6181855256c497ecfefc730df6032243f26855ce52cJeff Garzikconst struct dmi_device * dmi_find_device(int type, const char *name, 6191855256c497ecfefc730df6032243f26855ce52cJeff Garzik const struct dmi_device *from) 620ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin{ 6211855256c497ecfefc730df6032243f26855ce52cJeff Garzik const struct list_head *head = from ? &from->list : &dmi_devices; 6221855256c497ecfefc730df6032243f26855ce52cJeff Garzik struct list_head *d; 623ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 624ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin for(d = head->next; d != &dmi_devices; d = d->next) { 6251855256c497ecfefc730df6032243f26855ce52cJeff Garzik const struct dmi_device *dev = 6261855256c497ecfefc730df6032243f26855ce52cJeff Garzik list_entry(d, struct dmi_device, list); 627ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 628ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin if (((type == DMI_DEV_TYPE_ANY) || (dev->type == type)) && 629ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin ((name == NULL) || (strcmp(dev->name, name) == 0))) 630ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin return dev; 631ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin } 632ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin 633ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin return NULL; 634ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey Panin} 635ebad6a4230bdb5927495e28bc7837f515bf667a7Andrey PaninEXPORT_SYMBOL(dmi_find_device); 636f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen 637f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen/** 6383e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * dmi_get_date - parse a DMI date 6393e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * @field: data index (see enum dmi_field) 6403e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * @yearp: optional out parameter for the year 6413e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * @monthp: optional out parameter for the month 6423e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * @dayp: optional out parameter for the day 643f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen * 6443e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * The date field is assumed to be in the form resembling 6453e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * [mm[/dd]]/yy[yy] and the result is stored in the out 6463e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * parameters any or all of which can be omitted. 6473e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * 6483e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * If the field doesn't exist, all out parameters are set to zero 6493e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * and false is returned. Otherwise, true is returned with any 6503e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * invalid part of date set to zero. 6513e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * 6523e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * On return, year, month and day are guaranteed to be in the 6533e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * range of [0,9999], [0,12] and [0,31] respectively. 654f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen */ 6553e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heobool dmi_get_date(int field, int *yearp, int *monthp, int *dayp) 656f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen{ 6573e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo int year = 0, month = 0, day = 0; 6583e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo bool exists; 6593e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo const char *s, *y; 66002c24fa87724bb3af969463cd74dc3b3feb24740Tejun Heo char *e; 661f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen 6623e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo s = dmi_get_system_info(field); 6633e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo exists = s; 6643e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo if (!exists) 6653e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo goto out; 666f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen 6673e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo /* 6683e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * Determine year first. We assume the date string resembles 6693e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * mm/dd/yy[yy] but the original code extracted only the year 6703e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * from the end. Keep the behavior in the spirit of no 6713e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo * surprises. 6723e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo */ 6733e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo y = strrchr(s, '/'); 6743e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo if (!y) 6753e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo goto out; 6763e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo 6773e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo y++; 6783e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo year = simple_strtoul(y, &e, 10); 6793e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo if (y != e && year < 100) { /* 2-digit year */ 680f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen year += 1900; 681f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen if (year < 1996) /* no dates < spec 1.0 */ 682f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen year += 100; 683f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen } 6843e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo if (year > 9999) /* year should fit in %04d */ 6853e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo year = 0; 6863e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo 6873e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo /* parse the mm and dd */ 6883e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo month = simple_strtoul(s, &e, 10); 6893e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo if (s == e || *e != '/' || !month || month > 12) { 6903e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo month = 0; 6913e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo goto out; 6923e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo } 693f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen 6943e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo s = e + 1; 6953e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo day = simple_strtoul(s, &e, 10); 6963e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo if (s == y || s == e || *e != '/' || day > 31) 6973e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo day = 0; 6983e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heoout: 6993e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo if (yearp) 7003e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo *yearp = year; 7013e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo if (monthp) 7023e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo *monthp = month; 7033e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo if (dayp) 7043e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo *dayp = day; 7053e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun Heo return exists; 706f083a329e63d471a5e9238e837772b1b76c218dbAndi Kleen} 7073e5cd1f2576c720f1d0705fdd7ba64f27e8836b7Tejun HeoEXPORT_SYMBOL(dmi_get_date); 7087fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare 7097fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare/** 7107fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare * dmi_walk - Walk the DMI table and get called back for every record 7117fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare * @decode: Callback function 712e7a19c5624c66afa8118b10cd59f87ee407646bcJean Delvare * @private_data: Private data to be passed to the callback function 7137fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare * 7147fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare * Returns -1 when the DMI table can't be reached, 0 on success. 7157fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare */ 716e7a19c5624c66afa8118b10cd59f87ee407646bcJean Delvareint dmi_walk(void (*decode)(const struct dmi_header *, void *), 717e7a19c5624c66afa8118b10cd59f87ee407646bcJean Delvare void *private_data) 7187fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare{ 7197fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare u8 *buf; 7207fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare 7217fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare if (!dmi_available) 7227fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare return -1; 7237fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare 7247fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare buf = ioremap(dmi_base, dmi_len); 7257fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare if (buf == NULL) 7267fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare return -1; 7277fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare 728e7a19c5624c66afa8118b10cd59f87ee407646bcJean Delvare dmi_table(buf, dmi_len, dmi_num, decode, private_data); 7297fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare 7307fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare iounmap(buf); 7317fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare return 0; 7327fce084a0b3e2bb8caef919f8f36065953655bb5Jean Delvare} 7337fce084a0b3e2bb8caef919f8f36065953655bb5Jean DelvareEXPORT_SYMBOL_GPL(dmi_walk); 734d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby 735d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby/** 736d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby * dmi_match - compare a string to the dmi field (if exists) 737c2bacfc44f4b8d03dbaad5d2dca2fb4161e81975Randy Dunlap * @f: DMI field identifier 738c2bacfc44f4b8d03dbaad5d2dca2fb4161e81975Randy Dunlap * @str: string to compare the DMI field to 739d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby * 740d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby * Returns true if the requested field equals to the str (including NULL). 741d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby */ 742d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slabybool dmi_match(enum dmi_field f, const char *str) 743d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby{ 744d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby const char *info = dmi_get_system_info(f); 745d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby 746d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby if (info == NULL || str == NULL) 747d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby return info == str; 748d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby 749d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby return !strcmp(info, str); 750d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri Slaby} 751d61c72e52b98411d1cfef1fdb3f5a8bb070f8966Jiri SlabyEXPORT_SYMBOL_GPL(dmi_match); 752