Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <linux/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | #include <linux/string.h> |
| 3 | #include <linux/init.h> |
| 4 | #include <linux/module.h> |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 5 | #include <linux/ctype.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | #include <linux/dmi.h> |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 7 | #include <linux/efi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #include <linux/bootmem.h> |
Tony Luck | d114a33 | 2012-07-20 13:15:20 -0700 | [diff] [blame] | 9 | #include <linux/random.h> |
Andi Kleen | f2d3efe | 2006-03-25 16:30:22 +0100 | [diff] [blame] | 10 | #include <asm/dmi.h> |
Luck, Tony | 0841c04 | 2013-11-01 13:59:52 -0700 | [diff] [blame] | 11 | #include <asm/unaligned.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | |
Ivan Khoronzhuk | d7f96f97 | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 13 | struct kobject *dmi_kobj; |
| 14 | EXPORT_SYMBOL_GPL(dmi_kobj); |
| 15 | |
Paul Jackson | cb5dd7c | 2008-05-14 08:15:16 -0700 | [diff] [blame] | 16 | /* |
| 17 | * DMI stands for "Desktop Management Interface". It is part |
| 18 | * of and an antecedent to, SMBIOS, which stands for System |
| 19 | * Management BIOS. See further: http://www.dmtf.org/standards |
| 20 | */ |
Jean Delvare | ffbbb96 | 2013-09-11 14:24:09 -0700 | [diff] [blame] | 21 | static const char dmi_empty_string[] = " "; |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 22 | |
Ivan Khoronzhuk | 95be58d | 2015-02-18 13:33:20 +0200 | [diff] [blame] | 23 | static u32 dmi_ver __initdata; |
Ivan Khoronzhuk | 552e19d8 | 2015-02-18 13:33:21 +0200 | [diff] [blame] | 24 | static u32 dmi_len; |
| 25 | static u16 dmi_num; |
Ivan Khoronzhuk | d7f96f97 | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 26 | static u8 smbios_entry_point[32]; |
| 27 | static int smbios_entry_point_size; |
| 28 | |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 29 | /* |
| 30 | * Catch too early calls to dmi_check_system(): |
| 31 | */ |
| 32 | static int dmi_initialized; |
| 33 | |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 34 | /* DMI system identification string used during boot */ |
| 35 | static char dmi_ids_string[128] __initdata; |
| 36 | |
Chen, Gong | dd6dad4 | 2013-10-18 14:29:25 -0700 | [diff] [blame] | 37 | static struct dmi_memdev_info { |
| 38 | const char *device; |
| 39 | const char *bank; |
| 40 | u16 handle; |
| 41 | } *dmi_memdev; |
| 42 | static int dmi_memdev_nr; |
| 43 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 44 | static const char * __init dmi_string_nosave(const struct dmi_header *dm, u8 s) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 46 | const u8 *bp = ((u8 *) dm) + dm->length; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 47 | |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 48 | if (s) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | s--; |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 50 | while (s > 0 && *bp) { |
| 51 | bp += strlen(bp) + 1; |
| 52 | s--; |
| 53 | } |
| 54 | |
| 55 | if (*bp != 0) { |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 56 | size_t len = strlen(bp)+1; |
| 57 | size_t cmp_len = len > 8 ? 8 : len; |
| 58 | |
| 59 | if (!memcmp(bp, dmi_empty_string, cmp_len)) |
| 60 | return dmi_empty_string; |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 61 | return bp; |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 62 | } |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 63 | } |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 64 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 65 | return ""; |
| 66 | } |
| 67 | |
Jean Delvare | ffbbb96 | 2013-09-11 14:24:09 -0700 | [diff] [blame] | 68 | static const char * __init dmi_string(const struct dmi_header *dm, u8 s) |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 69 | { |
| 70 | const char *bp = dmi_string_nosave(dm, s); |
| 71 | char *str; |
| 72 | size_t len; |
| 73 | |
| 74 | if (bp == dmi_empty_string) |
| 75 | return dmi_empty_string; |
| 76 | |
| 77 | len = strlen(bp) + 1; |
| 78 | str = dmi_alloc(len); |
| 79 | if (str != NULL) |
| 80 | strcpy(str, bp); |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 81 | |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 82 | return str; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | /* |
| 86 | * We have to be cautious here. We have seen BIOSes with DMI pointers |
| 87 | * pointing to completely the wrong place for example |
| 88 | */ |
Ivan Khoronzhuk | eb4c5ea | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 89 | static void dmi_decode_table(u8 *buf, |
| 90 | void (*decode)(const struct dmi_header *, void *), |
| 91 | void *private_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | { |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 93 | u8 *data = buf; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 94 | int i = 0; |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 95 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | /* |
Jean Delvare | bfbaafa | 2015-03-20 09:59:47 +0100 | [diff] [blame] | 97 | * Stop when we have seen all the items the table claimed to have |
Jean Delvare | 17cd5bd | 2015-06-25 09:06:55 +0200 | [diff] [blame] | 98 | * (SMBIOS < 3.0 only) OR we reach an end-of-table marker (SMBIOS |
| 99 | * >= 3.0 only) OR we run off the end of the table (should never |
| 100 | * happen but sometimes does on bogus implementations.) |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 101 | */ |
Linus Torvalds | 9c65e12 | 2015-04-13 10:22:30 -0700 | [diff] [blame] | 102 | while ((!dmi_num || i < dmi_num) && |
| 103 | (data - buf + sizeof(struct dmi_header)) <= dmi_len) { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 104 | const struct dmi_header *dm = (const struct dmi_header *)data; |
| 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | /* |
Alan Cox | 8638545 | 2008-11-07 16:03:46 +0000 | [diff] [blame] | 107 | * We want to know the total length (formatted area and |
| 108 | * strings) before decoding to make sure we won't run off the |
| 109 | * table in dmi_decode or dmi_string |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 111 | data += dm->length; |
Ivan Khoronzhuk | 552e19d8 | 2015-02-18 13:33:21 +0200 | [diff] [blame] | 112 | while ((data - buf < dmi_len - 1) && (data[0] || data[1])) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | data++; |
Ivan Khoronzhuk | 552e19d8 | 2015-02-18 13:33:21 +0200 | [diff] [blame] | 114 | if (data - buf < dmi_len - 1) |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 115 | decode(dm, private_data); |
Ivan Khoronzhuk | ce204e9 | 2015-02-18 15:51:41 +0200 | [diff] [blame] | 116 | |
Jean Delvare | 6e0ad59 | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 117 | data += 2; |
| 118 | i++; |
| 119 | |
Ivan Khoronzhuk | ce204e9 | 2015-02-18 15:51:41 +0200 | [diff] [blame] | 120 | /* |
| 121 | * 7.45 End-of-Table (Type 127) [SMBIOS reference spec v3.0.0] |
Jean Delvare | 17cd5bd | 2015-06-25 09:06:55 +0200 | [diff] [blame] | 122 | * For tables behind a 64-bit entry point, we have no item |
| 123 | * count and no exact table length, so stop on end-of-table |
| 124 | * marker. For tables behind a 32-bit entry point, we have |
| 125 | * seen OEM structures behind the end-of-table marker on |
| 126 | * some systems, so don't trust it. |
Ivan Khoronzhuk | ce204e9 | 2015-02-18 15:51:41 +0200 | [diff] [blame] | 127 | */ |
Jean Delvare | 17cd5bd | 2015-06-25 09:06:55 +0200 | [diff] [blame] | 128 | if (!dmi_num && dm->type == DMI_ENTRY_END_OF_TABLE) |
Ivan Khoronzhuk | ce204e9 | 2015-02-18 15:51:41 +0200 | [diff] [blame] | 129 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | } |
Jean Delvare | 6e0ad59 | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 131 | |
| 132 | /* Trim DMI table length if needed */ |
| 133 | if (dmi_len > data - buf) |
| 134 | dmi_len = data - buf; |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 135 | } |
| 136 | |
Ard Biesheuvel | fc43026 | 2014-10-14 16:41:27 +0200 | [diff] [blame] | 137 | static phys_addr_t dmi_base; |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 138 | |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 139 | static int __init dmi_walk_early(void (*decode)(const struct dmi_header *, |
| 140 | void *)) |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 141 | { |
| 142 | u8 *buf; |
Jean Delvare | 6e0ad59 | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 143 | u32 orig_dmi_len = dmi_len; |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 144 | |
Jean Delvare | 6e0ad59 | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 145 | buf = dmi_early_remap(dmi_base, orig_dmi_len); |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 146 | if (buf == NULL) |
| 147 | return -1; |
| 148 | |
Ivan Khoronzhuk | eb4c5ea | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 149 | dmi_decode_table(buf, decode, NULL); |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 150 | |
Tony Luck | d114a33 | 2012-07-20 13:15:20 -0700 | [diff] [blame] | 151 | add_device_randomness(buf, dmi_len); |
| 152 | |
Jean Delvare | 6e0ad59 | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 153 | dmi_early_unmap(buf, orig_dmi_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | return 0; |
| 155 | } |
| 156 | |
Zhenzhong Duan | 9f9c9cbb | 2012-12-20 15:05:14 -0800 | [diff] [blame] | 157 | static int __init dmi_checksum(const u8 *buf, u8 len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | { |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 159 | u8 sum = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | int a; |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 161 | |
Zhenzhong Duan | 9f9c9cbb | 2012-12-20 15:05:14 -0800 | [diff] [blame] | 162 | for (a = 0; a < len; a++) |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 163 | sum += buf[a]; |
| 164 | |
| 165 | return sum == 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | } |
| 167 | |
Jean Delvare | ffbbb96 | 2013-09-11 14:24:09 -0700 | [diff] [blame] | 168 | static const char *dmi_ident[DMI_STRING_MAX]; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 169 | static LIST_HEAD(dmi_devices); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 170 | int dmi_available; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | |
| 172 | /* |
| 173 | * Save a DMI string |
| 174 | */ |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 175 | static void __init dmi_save_ident(const struct dmi_header *dm, int slot, |
| 176 | int string) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | { |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 178 | const char *d = (const char *) dm; |
Jean Delvare | ffbbb96 | 2013-09-11 14:24:09 -0700 | [diff] [blame] | 179 | const char *p; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | if (dmi_ident[slot]) |
| 182 | return; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 183 | |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 184 | p = dmi_string(dm, d[string]); |
| 185 | if (p == NULL) |
| 186 | return; |
| 187 | |
| 188 | dmi_ident[slot] = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | } |
| 190 | |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 191 | static void __init dmi_save_uuid(const struct dmi_header *dm, int slot, |
| 192 | int index) |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 193 | { |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 194 | const u8 *d = (u8 *) dm + index; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 195 | char *s; |
| 196 | int is_ff = 1, is_00 = 1, i; |
| 197 | |
| 198 | if (dmi_ident[slot]) |
| 199 | return; |
| 200 | |
| 201 | for (i = 0; i < 16 && (is_ff || is_00); i++) { |
Zhenzhong Duan | f1d8e61 | 2012-12-20 15:05:13 -0800 | [diff] [blame] | 202 | if (d[i] != 0x00) |
| 203 | is_00 = 0; |
| 204 | if (d[i] != 0xFF) |
| 205 | is_ff = 0; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | if (is_ff || is_00) |
| 209 | return; |
| 210 | |
| 211 | s = dmi_alloc(16*2+4+1); |
| 212 | if (!s) |
| 213 | return; |
| 214 | |
Zhenzhong Duan | f1d8e61 | 2012-12-20 15:05:13 -0800 | [diff] [blame] | 215 | /* |
| 216 | * As of version 2.6 of the SMBIOS specification, the first 3 fields of |
| 217 | * the UUID are supposed to be little-endian encoded. The specification |
| 218 | * says that this is the defacto standard. |
| 219 | */ |
Ivan Khoronzhuk | 95be58d | 2015-02-18 13:33:20 +0200 | [diff] [blame] | 220 | if (dmi_ver >= 0x020600) |
Zhenzhong Duan | f1d8e61 | 2012-12-20 15:05:13 -0800 | [diff] [blame] | 221 | sprintf(s, "%pUL", d); |
| 222 | else |
| 223 | sprintf(s, "%pUB", d); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 224 | |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 225 | dmi_ident[slot] = s; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 226 | } |
| 227 | |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 228 | static void __init dmi_save_type(const struct dmi_header *dm, int slot, |
| 229 | int index) |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 230 | { |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 231 | const u8 *d = (u8 *) dm + index; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 232 | char *s; |
| 233 | |
| 234 | if (dmi_ident[slot]) |
| 235 | return; |
| 236 | |
| 237 | s = dmi_alloc(4); |
| 238 | if (!s) |
| 239 | return; |
| 240 | |
| 241 | sprintf(s, "%u", *d & 0x7F); |
| 242 | dmi_ident[slot] = s; |
| 243 | } |
| 244 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 245 | static void __init dmi_save_one_device(int type, const char *name) |
| 246 | { |
| 247 | struct dmi_device *dev; |
| 248 | |
| 249 | /* No duplicate device */ |
| 250 | if (dmi_find_device(type, name, NULL)) |
| 251 | return; |
| 252 | |
| 253 | dev = dmi_alloc(sizeof(*dev) + strlen(name) + 1); |
Jean Delvare | ae79744 | 2013-09-11 14:24:10 -0700 | [diff] [blame] | 254 | if (!dev) |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 255 | return; |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 256 | |
| 257 | dev->type = type; |
| 258 | strcpy((char *)(dev + 1), name); |
| 259 | dev->name = (char *)(dev + 1); |
| 260 | dev->device_data = NULL; |
| 261 | list_add(&dev->list, &dmi_devices); |
| 262 | } |
| 263 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 264 | static void __init dmi_save_devices(const struct dmi_header *dm) |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 265 | { |
| 266 | int i, count = (dm->length - sizeof(struct dmi_header)) / 2; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 267 | |
| 268 | for (i = 0; i < count; i++) { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 269 | const char *d = (char *)(dm + 1) + (i * 2); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 270 | |
| 271 | /* Skip disabled device */ |
| 272 | if ((*d & 0x80) == 0) |
| 273 | continue; |
| 274 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 275 | dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d + 1))); |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 276 | } |
| 277 | } |
| 278 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 279 | static void __init dmi_save_oem_strings_devices(const struct dmi_header *dm) |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 280 | { |
| 281 | int i, count = *(u8 *)(dm + 1); |
| 282 | struct dmi_device *dev; |
| 283 | |
| 284 | for (i = 1; i <= count; i++) { |
Jean Delvare | ffbbb96 | 2013-09-11 14:24:09 -0700 | [diff] [blame] | 285 | const char *devname = dmi_string(dm, i); |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 286 | |
Jean Delvare | 43fe105 | 2008-02-23 15:23:55 -0800 | [diff] [blame] | 287 | if (devname == dmi_empty_string) |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 288 | continue; |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 289 | |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 290 | dev = dmi_alloc(sizeof(*dev)); |
Jean Delvare | ae79744 | 2013-09-11 14:24:10 -0700 | [diff] [blame] | 291 | if (!dev) |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 292 | break; |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 293 | |
| 294 | dev->type = DMI_DEV_TYPE_OEM_STRING; |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 295 | dev->name = devname; |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 296 | dev->device_data = NULL; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 297 | |
| 298 | list_add(&dev->list, &dmi_devices); |
| 299 | } |
| 300 | } |
| 301 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 302 | static void __init dmi_save_ipmi_device(const struct dmi_header *dm) |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 303 | { |
| 304 | struct dmi_device *dev; |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 305 | void *data; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 306 | |
Andi Kleen | e992867 | 2006-01-11 22:43:33 +0100 | [diff] [blame] | 307 | data = dmi_alloc(dm->length); |
Jean Delvare | ae79744 | 2013-09-11 14:24:10 -0700 | [diff] [blame] | 308 | if (data == NULL) |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 309 | return; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 310 | |
| 311 | memcpy(data, dm, dm->length); |
| 312 | |
Andi Kleen | e992867 | 2006-01-11 22:43:33 +0100 | [diff] [blame] | 313 | dev = dmi_alloc(sizeof(*dev)); |
Jean Delvare | ae79744 | 2013-09-11 14:24:10 -0700 | [diff] [blame] | 314 | if (!dev) |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 315 | return; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 316 | |
| 317 | dev->type = DMI_DEV_TYPE_IPMI; |
| 318 | dev->name = "IPMI controller"; |
| 319 | dev->device_data = data; |
| 320 | |
Carol Hebert | abd24df | 2008-04-04 14:30:03 -0700 | [diff] [blame] | 321 | list_add_tail(&dev->list, &dmi_devices); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 322 | } |
| 323 | |
Jordan Hargrave | e5b6c15 | 2016-01-15 22:08:45 +0100 | [diff] [blame] | 324 | static void __init dmi_save_dev_pciaddr(int instance, int segment, int bus, |
| 325 | int devfn, const char *name, int type) |
Narendra K | 911e1c9 | 2010-07-26 05:56:50 -0500 | [diff] [blame] | 326 | { |
Jordan Hargrave | e5b6c15 | 2016-01-15 22:08:45 +0100 | [diff] [blame] | 327 | struct dmi_dev_onboard *dev; |
Narendra K | 911e1c9 | 2010-07-26 05:56:50 -0500 | [diff] [blame] | 328 | |
Jordan Hargrave | e5b6c15 | 2016-01-15 22:08:45 +0100 | [diff] [blame] | 329 | /* Ignore invalid values */ |
| 330 | if (type == DMI_DEV_TYPE_DEV_SLOT && |
| 331 | segment == 0xFFFF && bus == 0xFF && devfn == 0xFF) |
Narendra K | 911e1c9 | 2010-07-26 05:56:50 -0500 | [diff] [blame] | 332 | return; |
Jean Delvare | ae79744 | 2013-09-11 14:24:10 -0700 | [diff] [blame] | 333 | |
Jordan Hargrave | e5b6c15 | 2016-01-15 22:08:45 +0100 | [diff] [blame] | 334 | dev = dmi_alloc(sizeof(*dev) + strlen(name) + 1); |
| 335 | if (!dev) |
| 336 | return; |
Narendra K | 911e1c9 | 2010-07-26 05:56:50 -0500 | [diff] [blame] | 337 | |
Jordan Hargrave | e5b6c15 | 2016-01-15 22:08:45 +0100 | [diff] [blame] | 338 | dev->instance = instance; |
| 339 | dev->segment = segment; |
| 340 | dev->bus = bus; |
| 341 | dev->devfn = devfn; |
Narendra K | 911e1c9 | 2010-07-26 05:56:50 -0500 | [diff] [blame] | 342 | |
Jordan Hargrave | e5b6c15 | 2016-01-15 22:08:45 +0100 | [diff] [blame] | 343 | strcpy((char *)&dev[1], name); |
| 344 | dev->dev.type = type; |
| 345 | dev->dev.name = (char *)&dev[1]; |
| 346 | dev->dev.device_data = dev; |
| 347 | |
| 348 | list_add(&dev->dev.list, &dmi_devices); |
Narendra K | 911e1c9 | 2010-07-26 05:56:50 -0500 | [diff] [blame] | 349 | } |
| 350 | |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 351 | static void __init dmi_save_extended_devices(const struct dmi_header *dm) |
| 352 | { |
Jean Delvare | 96e2394 | 2016-01-15 22:08:44 +0100 | [diff] [blame] | 353 | const char *name; |
Jean Delvare | 45b9825 | 2016-01-15 22:08:44 +0100 | [diff] [blame] | 354 | const u8 *d = (u8 *)dm; |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 355 | |
| 356 | /* Skip disabled device */ |
Jean Delvare | 45b9825 | 2016-01-15 22:08:44 +0100 | [diff] [blame] | 357 | if ((d[0x5] & 0x80) == 0) |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 358 | return; |
| 359 | |
Jean Delvare | 45b9825 | 2016-01-15 22:08:44 +0100 | [diff] [blame] | 360 | name = dmi_string_nosave(dm, d[0x4]); |
Jordan Hargrave | e5b6c15 | 2016-01-15 22:08:45 +0100 | [diff] [blame] | 361 | dmi_save_dev_pciaddr(d[0x6], *(u16 *)(d + 0x7), d[0x9], d[0xA], name, |
| 362 | DMI_DEV_TYPE_DEV_ONBOARD); |
Jean Delvare | 45b9825 | 2016-01-15 22:08:44 +0100 | [diff] [blame] | 363 | dmi_save_one_device(d[0x5] & 0x7f, name); |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 364 | } |
| 365 | |
Jordan Hargrave | e5b6c15 | 2016-01-15 22:08:45 +0100 | [diff] [blame] | 366 | static void __init dmi_save_system_slot(const struct dmi_header *dm) |
| 367 | { |
| 368 | const u8 *d = (u8 *)dm; |
| 369 | |
| 370 | /* Need SMBIOS 2.6+ structure */ |
| 371 | if (dm->length < 0x11) |
| 372 | return; |
| 373 | dmi_save_dev_pciaddr(*(u16 *)(d + 0x9), *(u16 *)(d + 0xD), d[0xF], |
| 374 | d[0x10], dmi_string_nosave(dm, d[0x4]), |
| 375 | DMI_DEV_TYPE_DEV_SLOT); |
| 376 | } |
| 377 | |
Chen, Gong | dd6dad4 | 2013-10-18 14:29:25 -0700 | [diff] [blame] | 378 | static void __init count_mem_devices(const struct dmi_header *dm, void *v) |
| 379 | { |
| 380 | if (dm->type != DMI_ENTRY_MEM_DEVICE) |
| 381 | return; |
| 382 | dmi_memdev_nr++; |
| 383 | } |
| 384 | |
| 385 | static void __init save_mem_devices(const struct dmi_header *dm, void *v) |
| 386 | { |
| 387 | const char *d = (const char *)dm; |
| 388 | static int nr; |
| 389 | |
| 390 | if (dm->type != DMI_ENTRY_MEM_DEVICE) |
| 391 | return; |
| 392 | if (nr >= dmi_memdev_nr) { |
| 393 | pr_warn(FW_BUG "Too many DIMM entries in SMBIOS table\n"); |
| 394 | return; |
| 395 | } |
Luck, Tony | 0841c04 | 2013-11-01 13:59:52 -0700 | [diff] [blame] | 396 | dmi_memdev[nr].handle = get_unaligned(&dm->handle); |
Chen, Gong | dd6dad4 | 2013-10-18 14:29:25 -0700 | [diff] [blame] | 397 | dmi_memdev[nr].device = dmi_string(dm, d[0x10]); |
| 398 | dmi_memdev[nr].bank = dmi_string(dm, d[0x11]); |
| 399 | nr++; |
| 400 | } |
| 401 | |
| 402 | void __init dmi_memdev_walk(void) |
| 403 | { |
| 404 | if (!dmi_available) |
| 405 | return; |
| 406 | |
| 407 | if (dmi_walk_early(count_mem_devices) == 0 && dmi_memdev_nr) { |
| 408 | dmi_memdev = dmi_alloc(sizeof(*dmi_memdev) * dmi_memdev_nr); |
| 409 | if (dmi_memdev) |
| 410 | dmi_walk_early(save_mem_devices); |
| 411 | } |
| 412 | } |
| 413 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | * Process a DMI table entry. Right now all we care about are the BIOS |
| 416 | * and machine entries. For 2.5 we should pull the smbus controller info |
| 417 | * out of here. |
| 418 | */ |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 419 | static void __init dmi_decode(const struct dmi_header *dm, void *dummy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | { |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 421 | switch (dm->type) { |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 422 | case 0: /* BIOS Information */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 423 | dmi_save_ident(dm, DMI_BIOS_VENDOR, 4); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 424 | dmi_save_ident(dm, DMI_BIOS_VERSION, 5); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 425 | dmi_save_ident(dm, DMI_BIOS_DATE, 8); |
| 426 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 427 | case 1: /* System Information */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 428 | dmi_save_ident(dm, DMI_SYS_VENDOR, 4); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 429 | dmi_save_ident(dm, DMI_PRODUCT_NAME, 5); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 430 | dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 431 | dmi_save_ident(dm, DMI_PRODUCT_SERIAL, 7); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 432 | dmi_save_uuid(dm, DMI_PRODUCT_UUID, 8); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 433 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 434 | case 2: /* Base Board Information */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 435 | dmi_save_ident(dm, DMI_BOARD_VENDOR, 4); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 436 | dmi_save_ident(dm, DMI_BOARD_NAME, 5); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 437 | dmi_save_ident(dm, DMI_BOARD_VERSION, 6); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 438 | dmi_save_ident(dm, DMI_BOARD_SERIAL, 7); |
| 439 | dmi_save_ident(dm, DMI_BOARD_ASSET_TAG, 8); |
| 440 | break; |
| 441 | case 3: /* Chassis Information */ |
| 442 | dmi_save_ident(dm, DMI_CHASSIS_VENDOR, 4); |
| 443 | dmi_save_type(dm, DMI_CHASSIS_TYPE, 5); |
| 444 | dmi_save_ident(dm, DMI_CHASSIS_VERSION, 6); |
| 445 | dmi_save_ident(dm, DMI_CHASSIS_SERIAL, 7); |
| 446 | dmi_save_ident(dm, DMI_CHASSIS_ASSET_TAG, 8); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 447 | break; |
Jordan Hargrave | e5b6c15 | 2016-01-15 22:08:45 +0100 | [diff] [blame] | 448 | case 9: /* System Slots */ |
| 449 | dmi_save_system_slot(dm); |
| 450 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 451 | case 10: /* Onboard Devices Information */ |
| 452 | dmi_save_devices(dm); |
| 453 | break; |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 454 | case 11: /* OEM Strings */ |
| 455 | dmi_save_oem_strings_devices(dm); |
| 456 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 457 | case 38: /* IPMI Device Information */ |
| 458 | dmi_save_ipmi_device(dm); |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 459 | break; |
| 460 | case 41: /* Onboard Devices Extended Information */ |
| 461 | dmi_save_extended_devices(dm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | } |
| 463 | } |
| 464 | |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 465 | static int __init print_filtered(char *buf, size_t len, const char *info) |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 466 | { |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 467 | int c = 0; |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 468 | const char *p; |
| 469 | |
| 470 | if (!info) |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 471 | return c; |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 472 | |
| 473 | for (p = info; *p; p++) |
| 474 | if (isprint(*p)) |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 475 | c += scnprintf(buf + c, len - c, "%c", *p); |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 476 | else |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 477 | c += scnprintf(buf + c, len - c, "\\x%02x", *p & 0xff); |
| 478 | return c; |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 479 | } |
| 480 | |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 481 | static void __init dmi_format_ids(char *buf, size_t len) |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 482 | { |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 483 | int c = 0; |
Naga Chumbalkar | 84e383b | 2011-02-14 22:47:17 +0000 | [diff] [blame] | 484 | const char *board; /* Board Name is optional */ |
| 485 | |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 486 | c += print_filtered(buf + c, len - c, |
| 487 | dmi_get_system_info(DMI_SYS_VENDOR)); |
| 488 | c += scnprintf(buf + c, len - c, " "); |
| 489 | c += print_filtered(buf + c, len - c, |
| 490 | dmi_get_system_info(DMI_PRODUCT_NAME)); |
| 491 | |
Naga Chumbalkar | 84e383b | 2011-02-14 22:47:17 +0000 | [diff] [blame] | 492 | board = dmi_get_system_info(DMI_BOARD_NAME); |
| 493 | if (board) { |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 494 | c += scnprintf(buf + c, len - c, "/"); |
| 495 | c += print_filtered(buf + c, len - c, board); |
Naga Chumbalkar | 84e383b | 2011-02-14 22:47:17 +0000 | [diff] [blame] | 496 | } |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 497 | c += scnprintf(buf + c, len - c, ", BIOS "); |
| 498 | c += print_filtered(buf + c, len - c, |
| 499 | dmi_get_system_info(DMI_BIOS_VERSION)); |
| 500 | c += scnprintf(buf + c, len - c, " "); |
| 501 | c += print_filtered(buf + c, len - c, |
| 502 | dmi_get_system_info(DMI_BIOS_DATE)); |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 503 | } |
| 504 | |
Ben Hutchings | d39de28 | 2013-07-31 13:53:30 -0700 | [diff] [blame] | 505 | /* |
| 506 | * Check for DMI/SMBIOS headers in the system firmware image. Any |
| 507 | * SMBIOS header must start 16 bytes before the DMI header, so take a |
| 508 | * 32 byte buffer and check for DMI at offset 16 and SMBIOS at offset |
| 509 | * 0. If the DMI header is present, set dmi_ver accordingly (SMBIOS |
| 510 | * takes precedence) and return 0. Otherwise return 1. |
| 511 | */ |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 512 | static int __init dmi_present(const u8 *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | { |
Ivan Khoronzhuk | 95be58d | 2015-02-18 13:33:20 +0200 | [diff] [blame] | 514 | u32 smbios_ver; |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 515 | |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 516 | if (memcmp(buf, "_SM_", 4) == 0 && |
| 517 | buf[5] < 32 && dmi_checksum(buf, buf[5])) { |
Ard Biesheuvel | fc43026 | 2014-10-14 16:41:27 +0200 | [diff] [blame] | 518 | smbios_ver = get_unaligned_be16(buf + 6); |
Ivan Khoronzhuk | d7f96f97 | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 519 | smbios_entry_point_size = buf[5]; |
| 520 | memcpy(smbios_entry_point, buf, smbios_entry_point_size); |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 521 | |
| 522 | /* Some BIOS report weird SMBIOS version, fix that up */ |
| 523 | switch (smbios_ver) { |
| 524 | case 0x021F: |
| 525 | case 0x0221: |
Jean Delvare | d1d8704 | 2015-06-25 09:06:57 +0200 | [diff] [blame] | 526 | pr_debug("SMBIOS version fixup (2.%d->2.%d)\n", |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 527 | smbios_ver & 0xFF, 3); |
| 528 | smbios_ver = 0x0203; |
| 529 | break; |
| 530 | case 0x0233: |
Jean Delvare | d1d8704 | 2015-06-25 09:06:57 +0200 | [diff] [blame] | 531 | pr_debug("SMBIOS version fixup (2.%d->2.%d)\n", 51, 6); |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 532 | smbios_ver = 0x0206; |
| 533 | break; |
| 534 | } |
| 535 | } else { |
| 536 | smbios_ver = 0; |
| 537 | } |
| 538 | |
| 539 | buf += 16; |
| 540 | |
| 541 | if (memcmp(buf, "_DMI_", 5) == 0 && dmi_checksum(buf, 15)) { |
Jean Delvare | 5c1ac56 | 2015-05-14 14:40:50 +0200 | [diff] [blame] | 542 | if (smbios_ver) |
| 543 | dmi_ver = smbios_ver; |
| 544 | else |
| 545 | dmi_ver = (buf[14] & 0xF0) << 4 | (buf[14] & 0x0F); |
Andrea Arcangeli | ff4319d | 2016-01-08 09:00:54 +0100 | [diff] [blame] | 546 | dmi_ver <<= 8; |
Ard Biesheuvel | fc43026 | 2014-10-14 16:41:27 +0200 | [diff] [blame] | 547 | dmi_num = get_unaligned_le16(buf + 12); |
| 548 | dmi_len = get_unaligned_le16(buf + 6); |
| 549 | dmi_base = get_unaligned_le32(buf + 8); |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 550 | |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 551 | if (dmi_walk_early(dmi_decode) == 0) { |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 552 | if (smbios_ver) { |
Jean Delvare | c249304 | 2015-05-14 14:40:50 +0200 | [diff] [blame] | 553 | pr_info("SMBIOS %d.%d present.\n", |
Andrea Arcangeli | ff4319d | 2016-01-08 09:00:54 +0100 | [diff] [blame] | 554 | dmi_ver >> 16, (dmi_ver >> 8) & 0xFF); |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 555 | } else { |
Ivan Khoronzhuk | d7f96f97 | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 556 | smbios_entry_point_size = 15; |
| 557 | memcpy(smbios_entry_point, buf, |
| 558 | smbios_entry_point_size); |
Zhenzhong Duan | 9f9c9cbb | 2012-12-20 15:05:14 -0800 | [diff] [blame] | 559 | pr_info("Legacy DMI %d.%d present.\n", |
Andrea Arcangeli | ff4319d | 2016-01-08 09:00:54 +0100 | [diff] [blame] | 560 | dmi_ver >> 16, (dmi_ver >> 8) & 0xFF); |
Zhenzhong Duan | 9f9c9cbb | 2012-12-20 15:05:14 -0800 | [diff] [blame] | 561 | } |
Tejun Heo | c90fe6b | 2013-04-30 15:27:14 -0700 | [diff] [blame] | 562 | dmi_format_ids(dmi_ids_string, sizeof(dmi_ids_string)); |
| 563 | printk(KERN_DEBUG "DMI: %s\n", dmi_ids_string); |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 564 | return 0; |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 565 | } |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 566 | } |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 567 | |
Ben Hutchings | a40e7cf | 2013-03-08 12:43:32 -0800 | [diff] [blame] | 568 | return 1; |
Zhenzhong Duan | 9f9c9cbb | 2012-12-20 15:05:14 -0800 | [diff] [blame] | 569 | } |
| 570 | |
Ard Biesheuvel | fc43026 | 2014-10-14 16:41:27 +0200 | [diff] [blame] | 571 | /* |
| 572 | * Check for the SMBIOS 3.0 64-bit entry point signature. Unlike the legacy |
| 573 | * 32-bit entry point, there is no embedded DMI header (_DMI_) in here. |
| 574 | */ |
| 575 | static int __init dmi_smbios3_present(const u8 *buf) |
| 576 | { |
| 577 | if (memcmp(buf, "_SM3_", 5) == 0 && |
| 578 | buf[6] < 32 && dmi_checksum(buf, buf[6])) { |
Jean Delvare | d1d8704 | 2015-06-25 09:06:57 +0200 | [diff] [blame] | 579 | dmi_ver = get_unaligned_be32(buf + 6) & 0xFFFFFF; |
Jean Delvare | bfbaafa | 2015-03-20 09:59:47 +0100 | [diff] [blame] | 580 | dmi_num = 0; /* No longer specified */ |
Ard Biesheuvel | fc43026 | 2014-10-14 16:41:27 +0200 | [diff] [blame] | 581 | dmi_len = get_unaligned_le32(buf + 12); |
| 582 | dmi_base = get_unaligned_le64(buf + 16); |
Ivan Khoronzhuk | d7f96f97 | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 583 | smbios_entry_point_size = buf[6]; |
| 584 | memcpy(smbios_entry_point, buf, smbios_entry_point_size); |
Ard Biesheuvel | fc43026 | 2014-10-14 16:41:27 +0200 | [diff] [blame] | 585 | |
Ard Biesheuvel | fc43026 | 2014-10-14 16:41:27 +0200 | [diff] [blame] | 586 | if (dmi_walk_early(dmi_decode) == 0) { |
Ivan Khoronzhuk | 95be58d | 2015-02-18 13:33:20 +0200 | [diff] [blame] | 587 | pr_info("SMBIOS %d.%d.%d present.\n", |
| 588 | dmi_ver >> 16, (dmi_ver >> 8) & 0xFF, |
| 589 | dmi_ver & 0xFF); |
Ard Biesheuvel | fc43026 | 2014-10-14 16:41:27 +0200 | [diff] [blame] | 590 | dmi_format_ids(dmi_ids_string, sizeof(dmi_ids_string)); |
| 591 | pr_debug("DMI: %s\n", dmi_ids_string); |
| 592 | return 0; |
| 593 | } |
| 594 | } |
| 595 | return 1; |
| 596 | } |
| 597 | |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 598 | void __init dmi_scan_machine(void) |
| 599 | { |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 600 | char __iomem *p, *q; |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 601 | char buf[32]; |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 602 | |
Matt Fleming | 83e6818 | 2012-11-14 09:42:35 +0000 | [diff] [blame] | 603 | if (efi_enabled(EFI_CONFIG_TABLES)) { |
Ard Biesheuvel | fc43026 | 2014-10-14 16:41:27 +0200 | [diff] [blame] | 604 | /* |
| 605 | * According to the DMTF SMBIOS reference spec v3.0.0, it is |
| 606 | * allowed to define both the 64-bit entry point (smbios3) and |
| 607 | * the 32-bit entry point (smbios), in which case they should |
| 608 | * either both point to the same SMBIOS structure table, or the |
| 609 | * table pointed to by the 64-bit entry point should contain a |
| 610 | * superset of the table contents pointed to by the 32-bit entry |
| 611 | * point (section 5.2) |
| 612 | * This implies that the 64-bit entry point should have |
| 613 | * precedence if it is defined and supported by the OS. If we |
| 614 | * have the 64-bit entry point, but fail to decode it, fall |
| 615 | * back to the legacy one (if available) |
| 616 | */ |
| 617 | if (efi.smbios3 != EFI_INVALID_TABLE_ADDR) { |
| 618 | p = dmi_early_remap(efi.smbios3, 32); |
| 619 | if (p == NULL) |
| 620 | goto error; |
| 621 | memcpy_fromio(buf, p, 32); |
| 622 | dmi_early_unmap(p, 32); |
| 623 | |
| 624 | if (!dmi_smbios3_present(buf)) { |
| 625 | dmi_available = 1; |
| 626 | goto out; |
| 627 | } |
| 628 | } |
Bjorn Helgaas | b2c99e3 | 2006-03-26 01:37:08 -0800 | [diff] [blame] | 629 | if (efi.smbios == EFI_INVALID_TABLE_ADDR) |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 630 | goto error; |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 631 | |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 632 | /* This is called as a core_initcall() because it isn't |
| 633 | * needed during early boot. This also means we can |
| 634 | * iounmap the space when we're done with it. |
| 635 | */ |
Ard Biesheuvel | cf07440 | 2014-01-23 15:54:39 -0800 | [diff] [blame] | 636 | p = dmi_early_remap(efi.smbios, 32); |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 637 | if (p == NULL) |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 638 | goto error; |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 639 | memcpy_fromio(buf, p, 32); |
Ard Biesheuvel | cf07440 | 2014-01-23 15:54:39 -0800 | [diff] [blame] | 640 | dmi_early_unmap(p, 32); |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 641 | |
| 642 | if (!dmi_present(buf)) { |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 643 | dmi_available = 1; |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 644 | goto out; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 645 | } |
Ard Biesheuvel | cf07440 | 2014-01-23 15:54:39 -0800 | [diff] [blame] | 646 | } else if (IS_ENABLED(CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK)) { |
| 647 | p = dmi_early_remap(0xF0000, 0x10000); |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 648 | if (p == NULL) |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 649 | goto error; |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 650 | |
Ben Hutchings | d39de28 | 2013-07-31 13:53:30 -0700 | [diff] [blame] | 651 | /* |
| 652 | * Iterate over all possible DMI header addresses q. |
| 653 | * Maintain the 32 bytes around q in buf. On the |
| 654 | * first iteration, substitute zero for the |
| 655 | * out-of-range bytes so there is no chance of falsely |
| 656 | * detecting an SMBIOS header. |
| 657 | */ |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 658 | memset(buf, 0, 16); |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 659 | for (q = p; q < p + 0x10000; q += 16) { |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 660 | memcpy_fromio(buf + 16, q, 16); |
Ard Biesheuvel | fc43026 | 2014-10-14 16:41:27 +0200 | [diff] [blame] | 661 | if (!dmi_smbios3_present(buf) || !dmi_present(buf)) { |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 662 | dmi_available = 1; |
Ard Biesheuvel | cf07440 | 2014-01-23 15:54:39 -0800 | [diff] [blame] | 663 | dmi_early_unmap(p, 0x10000); |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 664 | goto out; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 665 | } |
Ben Hutchings | 79bae42 | 2013-04-30 15:27:46 -0700 | [diff] [blame] | 666 | memcpy(buf, buf + 16, 16); |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 667 | } |
Ard Biesheuvel | cf07440 | 2014-01-23 15:54:39 -0800 | [diff] [blame] | 668 | dmi_early_unmap(p, 0x10000); |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 669 | } |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 670 | error: |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 671 | pr_info("DMI not present or invalid.\n"); |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 672 | out: |
| 673 | dmi_initialized = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | } |
| 675 | |
Ivan Khoronzhuk | d7f96f97 | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 676 | static ssize_t raw_table_read(struct file *file, struct kobject *kobj, |
| 677 | struct bin_attribute *attr, char *buf, |
| 678 | loff_t pos, size_t count) |
| 679 | { |
| 680 | memcpy(buf, attr->private + pos, count); |
| 681 | return count; |
| 682 | } |
| 683 | |
| 684 | static BIN_ATTR(smbios_entry_point, S_IRUSR, raw_table_read, NULL, 0); |
| 685 | static BIN_ATTR(DMI, S_IRUSR, raw_table_read, NULL, 0); |
| 686 | |
| 687 | static int __init dmi_init(void) |
| 688 | { |
| 689 | struct kobject *tables_kobj; |
| 690 | u8 *dmi_table; |
| 691 | int ret = -ENOMEM; |
| 692 | |
| 693 | if (!dmi_available) { |
| 694 | ret = -ENODATA; |
| 695 | goto err; |
| 696 | } |
| 697 | |
| 698 | /* |
| 699 | * Set up dmi directory at /sys/firmware/dmi. This entry should stay |
| 700 | * even after farther error, as it can be used by other modules like |
| 701 | * dmi-sysfs. |
| 702 | */ |
| 703 | dmi_kobj = kobject_create_and_add("dmi", firmware_kobj); |
| 704 | if (!dmi_kobj) |
| 705 | goto err; |
| 706 | |
| 707 | tables_kobj = kobject_create_and_add("tables", dmi_kobj); |
| 708 | if (!tables_kobj) |
| 709 | goto err; |
| 710 | |
| 711 | dmi_table = dmi_remap(dmi_base, dmi_len); |
| 712 | if (!dmi_table) |
| 713 | goto err_tables; |
| 714 | |
| 715 | bin_attr_smbios_entry_point.size = smbios_entry_point_size; |
| 716 | bin_attr_smbios_entry_point.private = smbios_entry_point; |
| 717 | ret = sysfs_create_bin_file(tables_kobj, &bin_attr_smbios_entry_point); |
| 718 | if (ret) |
| 719 | goto err_unmap; |
| 720 | |
| 721 | bin_attr_DMI.size = dmi_len; |
| 722 | bin_attr_DMI.private = dmi_table; |
| 723 | ret = sysfs_create_bin_file(tables_kobj, &bin_attr_DMI); |
| 724 | if (!ret) |
| 725 | return 0; |
| 726 | |
| 727 | sysfs_remove_bin_file(tables_kobj, |
| 728 | &bin_attr_smbios_entry_point); |
| 729 | err_unmap: |
| 730 | dmi_unmap(dmi_table); |
| 731 | err_tables: |
| 732 | kobject_del(tables_kobj); |
| 733 | kobject_put(tables_kobj); |
| 734 | err: |
| 735 | pr_err("dmi: Firmware registration failed.\n"); |
| 736 | |
| 737 | return ret; |
| 738 | } |
| 739 | subsys_initcall(dmi_init); |
| 740 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | /** |
Tejun Heo | 98e5e1b | 2013-04-30 15:27:15 -0700 | [diff] [blame] | 742 | * dmi_set_dump_stack_arch_desc - set arch description for dump_stack() |
| 743 | * |
| 744 | * Invoke dump_stack_set_arch_desc() with DMI system information so that |
| 745 | * DMI identifiers are printed out on task dumps. Arch boot code should |
| 746 | * call this function after dmi_scan_machine() if it wants to print out DMI |
| 747 | * identifiers on task dumps. |
| 748 | */ |
| 749 | void __init dmi_set_dump_stack_arch_desc(void) |
| 750 | { |
| 751 | dump_stack_set_arch_desc("%s", dmi_ids_string); |
| 752 | } |
| 753 | |
| 754 | /** |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 755 | * dmi_matches - check if dmi_system_id structure matches system DMI data |
| 756 | * @dmi: pointer to the dmi_system_id structure to check |
| 757 | */ |
| 758 | static bool dmi_matches(const struct dmi_system_id *dmi) |
| 759 | { |
| 760 | int i; |
| 761 | |
| 762 | WARN(!dmi_initialized, KERN_ERR "dmi check: not initialized yet.\n"); |
| 763 | |
| 764 | for (i = 0; i < ARRAY_SIZE(dmi->matches); i++) { |
| 765 | int s = dmi->matches[i].slot; |
| 766 | if (s == DMI_NONE) |
Dmitry Torokhov | 7575750 | 2009-12-04 10:24:19 -0800 | [diff] [blame] | 767 | break; |
Jani Nikula | 5017b28 | 2013-07-03 15:05:02 -0700 | [diff] [blame] | 768 | if (dmi_ident[s]) { |
| 769 | if (!dmi->matches[i].exact_match && |
| 770 | strstr(dmi_ident[s], dmi->matches[i].substr)) |
| 771 | continue; |
| 772 | else if (dmi->matches[i].exact_match && |
| 773 | !strcmp(dmi_ident[s], dmi->matches[i].substr)) |
| 774 | continue; |
| 775 | } |
| 776 | |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 777 | /* No match */ |
| 778 | return false; |
| 779 | } |
| 780 | return true; |
| 781 | } |
| 782 | |
| 783 | /** |
Dmitry Torokhov | 7575750 | 2009-12-04 10:24:19 -0800 | [diff] [blame] | 784 | * dmi_is_end_of_table - check for end-of-table marker |
| 785 | * @dmi: pointer to the dmi_system_id structure to check |
| 786 | */ |
| 787 | static bool dmi_is_end_of_table(const struct dmi_system_id *dmi) |
| 788 | { |
| 789 | return dmi->matches[0].slot == DMI_NONE; |
| 790 | } |
| 791 | |
| 792 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | * dmi_check_system - check system DMI data |
| 794 | * @list: array of dmi_system_id structures to match against |
Randy Dunlap | b0ef371 | 2006-06-25 05:49:18 -0700 | [diff] [blame] | 795 | * All non-null elements of the list must match |
| 796 | * their slot's (field index's) data (i.e., each |
| 797 | * list string must be a substring of the specified |
| 798 | * DMI slot's string data) to be considered a |
| 799 | * successful match. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | * |
| 801 | * Walk the blacklist table running matching functions until someone |
| 802 | * returns non zero or we hit the end. Callback function is called for |
Randy Dunlap | b0ef371 | 2006-06-25 05:49:18 -0700 | [diff] [blame] | 803 | * each successful match. Returns the number of matches. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 805 | int dmi_check_system(const struct dmi_system_id *list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | { |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 807 | int count = 0; |
| 808 | const struct dmi_system_id *d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | |
Dmitry Torokhov | 7575750 | 2009-12-04 10:24:19 -0800 | [diff] [blame] | 810 | for (d = list; !dmi_is_end_of_table(d); d++) |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 811 | if (dmi_matches(d)) { |
| 812 | count++; |
| 813 | if (d->callback && d->callback(d)) |
| 814 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | |
| 817 | return count; |
| 818 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | EXPORT_SYMBOL(dmi_check_system); |
| 820 | |
| 821 | /** |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 822 | * dmi_first_match - find dmi_system_id structure matching system DMI data |
| 823 | * @list: array of dmi_system_id structures to match against |
| 824 | * All non-null elements of the list must match |
| 825 | * their slot's (field index's) data (i.e., each |
| 826 | * list string must be a substring of the specified |
| 827 | * DMI slot's string data) to be considered a |
| 828 | * successful match. |
| 829 | * |
| 830 | * Walk the blacklist table until the first match is found. Return the |
| 831 | * pointer to the matching entry or NULL if there's no match. |
| 832 | */ |
| 833 | const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list) |
| 834 | { |
| 835 | const struct dmi_system_id *d; |
| 836 | |
Dmitry Torokhov | 7575750 | 2009-12-04 10:24:19 -0800 | [diff] [blame] | 837 | for (d = list; !dmi_is_end_of_table(d); d++) |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 838 | if (dmi_matches(d)) |
| 839 | return d; |
| 840 | |
| 841 | return NULL; |
| 842 | } |
| 843 | EXPORT_SYMBOL(dmi_first_match); |
| 844 | |
| 845 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | * dmi_get_system_info - return DMI data value |
Randy Dunlap | b0ef371 | 2006-06-25 05:49:18 -0700 | [diff] [blame] | 847 | * @field: data index (see enum dmi_field) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | * |
| 849 | * Returns one DMI data value, can be used to perform |
| 850 | * complex DMI data checks. |
| 851 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 852 | const char *dmi_get_system_info(int field) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | { |
| 854 | return dmi_ident[field]; |
| 855 | } |
Dmitry Torokhov | e70c9d5 | 2005-06-25 14:54:25 -0700 | [diff] [blame] | 856 | EXPORT_SYMBOL(dmi_get_system_info); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 857 | |
Alok Kataria | fd8cd7e | 2008-11-03 15:50:38 -0800 | [diff] [blame] | 858 | /** |
Randy Dunlap | c2bacfc | 2009-01-06 14:41:40 -0800 | [diff] [blame] | 859 | * dmi_name_in_serial - Check if string is in the DMI product serial information |
| 860 | * @str: string to check for |
Alok Kataria | fd8cd7e | 2008-11-03 15:50:38 -0800 | [diff] [blame] | 861 | */ |
| 862 | int dmi_name_in_serial(const char *str) |
| 863 | { |
| 864 | int f = DMI_PRODUCT_SERIAL; |
| 865 | if (dmi_ident[f] && strstr(dmi_ident[f], str)) |
| 866 | return 1; |
| 867 | return 0; |
| 868 | } |
Andi Kleen | a1bae67 | 2006-10-21 18:37:02 +0200 | [diff] [blame] | 869 | |
| 870 | /** |
Jean Delvare | 66e13e6 | 2011-11-15 14:36:09 -0800 | [diff] [blame] | 871 | * dmi_name_in_vendors - Check if string is in the DMI system or board vendor name |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 872 | * @str: Case sensitive Name |
Andi Kleen | a1bae67 | 2006-10-21 18:37:02 +0200 | [diff] [blame] | 873 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 874 | int dmi_name_in_vendors(const char *str) |
Andi Kleen | a1bae67 | 2006-10-21 18:37:02 +0200 | [diff] [blame] | 875 | { |
Jean Delvare | 66e13e6 | 2011-11-15 14:36:09 -0800 | [diff] [blame] | 876 | static int fields[] = { DMI_SYS_VENDOR, DMI_BOARD_VENDOR, DMI_NONE }; |
Andi Kleen | a1bae67 | 2006-10-21 18:37:02 +0200 | [diff] [blame] | 877 | int i; |
| 878 | for (i = 0; fields[i] != DMI_NONE; i++) { |
| 879 | int f = fields[i]; |
| 880 | if (dmi_ident[f] && strstr(dmi_ident[f], str)) |
| 881 | return 1; |
| 882 | } |
| 883 | return 0; |
| 884 | } |
| 885 | EXPORT_SYMBOL(dmi_name_in_vendors); |
| 886 | |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 887 | /** |
| 888 | * dmi_find_device - find onboard device by type/name |
| 889 | * @type: device type or %DMI_DEV_TYPE_ANY to match all device types |
Randy Dunlap | b0ef371 | 2006-06-25 05:49:18 -0700 | [diff] [blame] | 890 | * @name: device name string or %NULL to match all |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 891 | * @from: previous device found in search, or %NULL for new search. |
| 892 | * |
| 893 | * Iterates through the list of known onboard devices. If a device is |
Jean Delvare | bfab8b48 | 2016-01-15 22:08:44 +0100 | [diff] [blame] | 894 | * found with a matching @type and @name, a pointer to its device |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 895 | * structure is returned. Otherwise, %NULL is returned. |
Randy Dunlap | b0ef371 | 2006-06-25 05:49:18 -0700 | [diff] [blame] | 896 | * A new search is initiated by passing %NULL as the @from argument. |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 897 | * If @from is not %NULL, searches continue from next device. |
| 898 | */ |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 899 | const struct dmi_device *dmi_find_device(int type, const char *name, |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 900 | const struct dmi_device *from) |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 901 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 902 | const struct list_head *head = from ? &from->list : &dmi_devices; |
| 903 | struct list_head *d; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 904 | |
Jean Delvare | 02d9c47 | 2013-09-11 14:24:08 -0700 | [diff] [blame] | 905 | for (d = head->next; d != &dmi_devices; d = d->next) { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 906 | const struct dmi_device *dev = |
| 907 | list_entry(d, struct dmi_device, list); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 908 | |
| 909 | if (((type == DMI_DEV_TYPE_ANY) || (dev->type == type)) && |
| 910 | ((name == NULL) || (strcmp(dev->name, name) == 0))) |
| 911 | return dev; |
| 912 | } |
| 913 | |
| 914 | return NULL; |
| 915 | } |
| 916 | EXPORT_SYMBOL(dmi_find_device); |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 917 | |
| 918 | /** |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 919 | * dmi_get_date - parse a DMI date |
| 920 | * @field: data index (see enum dmi_field) |
| 921 | * @yearp: optional out parameter for the year |
| 922 | * @monthp: optional out parameter for the month |
| 923 | * @dayp: optional out parameter for the day |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 924 | * |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 925 | * The date field is assumed to be in the form resembling |
| 926 | * [mm[/dd]]/yy[yy] and the result is stored in the out |
| 927 | * parameters any or all of which can be omitted. |
| 928 | * |
| 929 | * If the field doesn't exist, all out parameters are set to zero |
| 930 | * and false is returned. Otherwise, true is returned with any |
| 931 | * invalid part of date set to zero. |
| 932 | * |
| 933 | * On return, year, month and day are guaranteed to be in the |
| 934 | * range of [0,9999], [0,12] and [0,31] respectively. |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 935 | */ |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 936 | bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp) |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 937 | { |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 938 | int year = 0, month = 0, day = 0; |
| 939 | bool exists; |
| 940 | const char *s, *y; |
Tejun Heo | 02c24fa | 2009-08-16 21:01:22 +0900 | [diff] [blame] | 941 | char *e; |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 942 | |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 943 | s = dmi_get_system_info(field); |
| 944 | exists = s; |
| 945 | if (!exists) |
| 946 | goto out; |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 947 | |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 948 | /* |
| 949 | * Determine year first. We assume the date string resembles |
| 950 | * mm/dd/yy[yy] but the original code extracted only the year |
| 951 | * from the end. Keep the behavior in the spirit of no |
| 952 | * surprises. |
| 953 | */ |
| 954 | y = strrchr(s, '/'); |
| 955 | if (!y) |
| 956 | goto out; |
| 957 | |
| 958 | y++; |
| 959 | year = simple_strtoul(y, &e, 10); |
| 960 | if (y != e && year < 100) { /* 2-digit year */ |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 961 | year += 1900; |
| 962 | if (year < 1996) /* no dates < spec 1.0 */ |
| 963 | year += 100; |
| 964 | } |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 965 | if (year > 9999) /* year should fit in %04d */ |
| 966 | year = 0; |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 967 | |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 968 | /* parse the mm and dd */ |
| 969 | month = simple_strtoul(s, &e, 10); |
| 970 | if (s == e || *e != '/' || !month || month > 12) { |
| 971 | month = 0; |
| 972 | goto out; |
| 973 | } |
| 974 | |
| 975 | s = e + 1; |
| 976 | day = simple_strtoul(s, &e, 10); |
| 977 | if (s == y || s == e || *e != '/' || day > 31) |
| 978 | day = 0; |
| 979 | out: |
| 980 | if (yearp) |
| 981 | *yearp = year; |
| 982 | if (monthp) |
| 983 | *monthp = month; |
| 984 | if (dayp) |
| 985 | *dayp = day; |
| 986 | return exists; |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 987 | } |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 988 | EXPORT_SYMBOL(dmi_get_date); |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 989 | |
| 990 | /** |
| 991 | * dmi_walk - Walk the DMI table and get called back for every record |
| 992 | * @decode: Callback function |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 993 | * @private_data: Private data to be passed to the callback function |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 994 | * |
| 995 | * Returns -1 when the DMI table can't be reached, 0 on success. |
| 996 | */ |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 997 | int dmi_walk(void (*decode)(const struct dmi_header *, void *), |
| 998 | void *private_data) |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 999 | { |
| 1000 | u8 *buf; |
| 1001 | |
| 1002 | if (!dmi_available) |
| 1003 | return -1; |
| 1004 | |
Ard Biesheuvel | cf07440 | 2014-01-23 15:54:39 -0800 | [diff] [blame] | 1005 | buf = dmi_remap(dmi_base, dmi_len); |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 1006 | if (buf == NULL) |
| 1007 | return -1; |
| 1008 | |
Ivan Khoronzhuk | eb4c5ea | 2015-06-25 09:06:56 +0200 | [diff] [blame] | 1009 | dmi_decode_table(buf, decode, private_data); |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 1010 | |
Ard Biesheuvel | cf07440 | 2014-01-23 15:54:39 -0800 | [diff] [blame] | 1011 | dmi_unmap(buf); |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 1012 | return 0; |
| 1013 | } |
| 1014 | EXPORT_SYMBOL_GPL(dmi_walk); |
Jiri Slaby | d61c72e | 2008-12-10 14:07:21 +0100 | [diff] [blame] | 1015 | |
| 1016 | /** |
| 1017 | * dmi_match - compare a string to the dmi field (if exists) |
Randy Dunlap | c2bacfc | 2009-01-06 14:41:40 -0800 | [diff] [blame] | 1018 | * @f: DMI field identifier |
| 1019 | * @str: string to compare the DMI field to |
Jiri Slaby | d61c72e | 2008-12-10 14:07:21 +0100 | [diff] [blame] | 1020 | * |
| 1021 | * Returns true if the requested field equals to the str (including NULL). |
| 1022 | */ |
| 1023 | bool dmi_match(enum dmi_field f, const char *str) |
| 1024 | { |
| 1025 | const char *info = dmi_get_system_info(f); |
| 1026 | |
| 1027 | if (info == NULL || str == NULL) |
| 1028 | return info == str; |
| 1029 | |
| 1030 | return !strcmp(info, str); |
| 1031 | } |
| 1032 | EXPORT_SYMBOL_GPL(dmi_match); |
Chen, Gong | dd6dad4 | 2013-10-18 14:29:25 -0700 | [diff] [blame] | 1033 | |
| 1034 | void dmi_memdev_name(u16 handle, const char **bank, const char **device) |
| 1035 | { |
| 1036 | int n; |
| 1037 | |
| 1038 | if (dmi_memdev == NULL) |
| 1039 | return; |
| 1040 | |
| 1041 | for (n = 0; n < dmi_memdev_nr; n++) { |
| 1042 | if (handle == dmi_memdev[n].handle) { |
| 1043 | *bank = dmi_memdev[n].bank; |
| 1044 | *device = dmi_memdev[n].device; |
| 1045 | break; |
| 1046 | } |
| 1047 | } |
| 1048 | } |
| 1049 | EXPORT_SYMBOL_GPL(dmi_memdev_name); |