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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | #include <linux/dmi.h> |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 6 | #include <linux/efi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | #include <linux/bootmem.h> |
Andi Kleen | e992867 | 2006-01-11 22:43:33 +0100 | [diff] [blame] | 8 | #include <linux/slab.h> |
Andi Kleen | f2d3efe | 2006-03-25 16:30:22 +0100 | [diff] [blame] | 9 | #include <asm/dmi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 11 | static char dmi_empty_string[] = " "; |
| 12 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 13 | 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] | 14 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 15 | const u8 *bp = ((u8 *) dm) + dm->length; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 16 | |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 17 | if (s) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | s--; |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 19 | while (s > 0 && *bp) { |
| 20 | bp += strlen(bp) + 1; |
| 21 | s--; |
| 22 | } |
| 23 | |
| 24 | if (*bp != 0) { |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 25 | size_t len = strlen(bp)+1; |
| 26 | size_t cmp_len = len > 8 ? 8 : len; |
| 27 | |
| 28 | if (!memcmp(bp, dmi_empty_string, cmp_len)) |
| 29 | return dmi_empty_string; |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 30 | return bp; |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 31 | } |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 32 | } |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 33 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 34 | return ""; |
| 35 | } |
| 36 | |
| 37 | static char * __init dmi_string(const struct dmi_header *dm, u8 s) |
| 38 | { |
| 39 | const char *bp = dmi_string_nosave(dm, s); |
| 40 | char *str; |
| 41 | size_t len; |
| 42 | |
| 43 | if (bp == dmi_empty_string) |
| 44 | return dmi_empty_string; |
| 45 | |
| 46 | len = strlen(bp) + 1; |
| 47 | str = dmi_alloc(len); |
| 48 | if (str != NULL) |
| 49 | strcpy(str, bp); |
| 50 | else |
| 51 | printk(KERN_ERR "dmi_string: cannot allocate %Zu bytes.\n", len); |
| 52 | |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 53 | return str; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | } |
| 55 | |
| 56 | /* |
| 57 | * We have to be cautious here. We have seen BIOSes with DMI pointers |
| 58 | * pointing to completely the wrong place for example |
| 59 | */ |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 60 | static void dmi_table(u8 *buf, int len, int num, |
| 61 | void (*decode)(const struct dmi_header *)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | { |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 63 | u8 *data = buf; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 64 | int i = 0; |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 65 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | /* |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 67 | * Stop when we see all the items the table claimed to have |
| 68 | * OR we run off the end of the table (also happens) |
| 69 | */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 70 | while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 71 | const struct dmi_header *dm = (const struct dmi_header *)data; |
| 72 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | /* |
| 74 | * We want to know the total length (formated area and strings) |
| 75 | * before decoding to make sure we won't run off the table in |
| 76 | * dmi_decode or dmi_string |
| 77 | */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 78 | data += dm->length; |
| 79 | while ((data - buf < len - 1) && (data[0] || data[1])) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | data++; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 81 | if (data - buf < len - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | decode(dm); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 83 | data += 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | i++; |
| 85 | } |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 86 | } |
| 87 | |
| 88 | static u32 dmi_base; |
| 89 | static u16 dmi_len; |
| 90 | static u16 dmi_num; |
| 91 | |
| 92 | static int __init dmi_walk_early(void (*decode)(const struct dmi_header *)) |
| 93 | { |
| 94 | u8 *buf; |
| 95 | |
| 96 | buf = dmi_ioremap(dmi_base, dmi_len); |
| 97 | if (buf == NULL) |
| 98 | return -1; |
| 99 | |
| 100 | dmi_table(buf, dmi_len, dmi_num, decode); |
| 101 | |
| 102 | dmi_iounmap(buf, dmi_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | return 0; |
| 104 | } |
| 105 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 106 | static int __init dmi_checksum(const u8 *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | { |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 108 | u8 sum = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | int a; |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 110 | |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 111 | for (a = 0; a < 15; a++) |
| 112 | sum += buf[a]; |
| 113 | |
| 114 | return sum == 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | } |
| 116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | static char *dmi_ident[DMI_STRING_MAX]; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 118 | static LIST_HEAD(dmi_devices); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 119 | int dmi_available; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | |
| 121 | /* |
| 122 | * Save a DMI string |
| 123 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 124 | static void __init dmi_save_ident(const struct dmi_header *dm, int slot, int string) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 126 | const char *d = (const char*) dm; |
| 127 | char *p; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | if (dmi_ident[slot]) |
| 130 | return; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 131 | |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 132 | p = dmi_string(dm, d[string]); |
| 133 | if (p == NULL) |
| 134 | return; |
| 135 | |
| 136 | dmi_ident[slot] = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | } |
| 138 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 139 | static void __init dmi_save_uuid(const struct dmi_header *dm, int slot, int index) |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 140 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 141 | const u8 *d = (u8*) dm + index; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 142 | char *s; |
| 143 | int is_ff = 1, is_00 = 1, i; |
| 144 | |
| 145 | if (dmi_ident[slot]) |
| 146 | return; |
| 147 | |
| 148 | for (i = 0; i < 16 && (is_ff || is_00); i++) { |
| 149 | if(d[i] != 0x00) is_ff = 0; |
| 150 | if(d[i] != 0xFF) is_00 = 0; |
| 151 | } |
| 152 | |
| 153 | if (is_ff || is_00) |
| 154 | return; |
| 155 | |
| 156 | s = dmi_alloc(16*2+4+1); |
| 157 | if (!s) |
| 158 | return; |
| 159 | |
| 160 | sprintf(s, |
| 161 | "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X", |
| 162 | d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], |
| 163 | d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15]); |
| 164 | |
| 165 | dmi_ident[slot] = s; |
| 166 | } |
| 167 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 168 | static void __init dmi_save_type(const struct dmi_header *dm, int slot, int index) |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 169 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 170 | const u8 *d = (u8*) dm + index; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 171 | char *s; |
| 172 | |
| 173 | if (dmi_ident[slot]) |
| 174 | return; |
| 175 | |
| 176 | s = dmi_alloc(4); |
| 177 | if (!s) |
| 178 | return; |
| 179 | |
| 180 | sprintf(s, "%u", *d & 0x7F); |
| 181 | dmi_ident[slot] = s; |
| 182 | } |
| 183 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 184 | static void __init dmi_save_one_device(int type, const char *name) |
| 185 | { |
| 186 | struct dmi_device *dev; |
| 187 | |
| 188 | /* No duplicate device */ |
| 189 | if (dmi_find_device(type, name, NULL)) |
| 190 | return; |
| 191 | |
| 192 | dev = dmi_alloc(sizeof(*dev) + strlen(name) + 1); |
| 193 | if (!dev) { |
| 194 | printk(KERN_ERR "dmi_save_one_device: out of memory.\n"); |
| 195 | return; |
| 196 | } |
| 197 | |
| 198 | dev->type = type; |
| 199 | strcpy((char *)(dev + 1), name); |
| 200 | dev->name = (char *)(dev + 1); |
| 201 | dev->device_data = NULL; |
| 202 | list_add(&dev->list, &dmi_devices); |
| 203 | } |
| 204 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 205 | static void __init dmi_save_devices(const struct dmi_header *dm) |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 206 | { |
| 207 | int i, count = (dm->length - sizeof(struct dmi_header)) / 2; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 208 | |
| 209 | for (i = 0; i < count; i++) { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 210 | const char *d = (char *)(dm + 1) + (i * 2); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 211 | |
| 212 | /* Skip disabled device */ |
| 213 | if ((*d & 0x80) == 0) |
| 214 | continue; |
| 215 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 216 | dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d + 1))); |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 217 | } |
| 218 | } |
| 219 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 220 | 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] | 221 | { |
| 222 | int i, count = *(u8 *)(dm + 1); |
| 223 | struct dmi_device *dev; |
| 224 | |
| 225 | for (i = 1; i <= count; i++) { |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 226 | char *devname = dmi_string(dm, i); |
| 227 | |
Jean Delvare | 43fe105 | 2008-02-23 15:23:55 -0800 | [diff] [blame] | 228 | if (devname == dmi_empty_string) |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 229 | continue; |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 230 | |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 231 | dev = dmi_alloc(sizeof(*dev)); |
| 232 | if (!dev) { |
| 233 | printk(KERN_ERR |
| 234 | "dmi_save_oem_strings_devices: out of memory.\n"); |
| 235 | break; |
| 236 | } |
| 237 | |
| 238 | dev->type = DMI_DEV_TYPE_OEM_STRING; |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 239 | dev->name = devname; |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 240 | dev->device_data = NULL; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 241 | |
| 242 | list_add(&dev->list, &dmi_devices); |
| 243 | } |
| 244 | } |
| 245 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 246 | static void __init dmi_save_ipmi_device(const struct dmi_header *dm) |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 247 | { |
| 248 | struct dmi_device *dev; |
| 249 | void * data; |
| 250 | |
Andi Kleen | e992867 | 2006-01-11 22:43:33 +0100 | [diff] [blame] | 251 | data = dmi_alloc(dm->length); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 252 | if (data == NULL) { |
| 253 | printk(KERN_ERR "dmi_save_ipmi_device: out of memory.\n"); |
| 254 | return; |
| 255 | } |
| 256 | |
| 257 | memcpy(data, dm, dm->length); |
| 258 | |
Andi Kleen | e992867 | 2006-01-11 22:43:33 +0100 | [diff] [blame] | 259 | dev = dmi_alloc(sizeof(*dev)); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 260 | if (!dev) { |
| 261 | printk(KERN_ERR "dmi_save_ipmi_device: out of memory.\n"); |
| 262 | return; |
| 263 | } |
| 264 | |
| 265 | dev->type = DMI_DEV_TYPE_IPMI; |
| 266 | dev->name = "IPMI controller"; |
| 267 | dev->device_data = data; |
| 268 | |
Carol Hebert | abd24df | 2008-04-04 14:30:03 -0700 | [diff] [blame] | 269 | list_add_tail(&dev->list, &dmi_devices); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 270 | } |
| 271 | |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 272 | static void __init dmi_save_extended_devices(const struct dmi_header *dm) |
| 273 | { |
| 274 | const u8 *d = (u8*) dm + 5; |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 275 | |
| 276 | /* Skip disabled device */ |
| 277 | if ((*d & 0x80) == 0) |
| 278 | return; |
| 279 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 280 | dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d - 1))); |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 281 | } |
| 282 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | * Process a DMI table entry. Right now all we care about are the BIOS |
| 285 | * and machine entries. For 2.5 we should pull the smbus controller info |
| 286 | * out of here. |
| 287 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 288 | static void __init dmi_decode(const struct dmi_header *dm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | { |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 290 | switch(dm->type) { |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 291 | case 0: /* BIOS Information */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 292 | dmi_save_ident(dm, DMI_BIOS_VENDOR, 4); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 293 | dmi_save_ident(dm, DMI_BIOS_VERSION, 5); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 294 | dmi_save_ident(dm, DMI_BIOS_DATE, 8); |
| 295 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 296 | case 1: /* System Information */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 297 | dmi_save_ident(dm, DMI_SYS_VENDOR, 4); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 298 | dmi_save_ident(dm, DMI_PRODUCT_NAME, 5); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 299 | dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 300 | dmi_save_ident(dm, DMI_PRODUCT_SERIAL, 7); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 301 | dmi_save_uuid(dm, DMI_PRODUCT_UUID, 8); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 302 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 303 | case 2: /* Base Board Information */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 304 | dmi_save_ident(dm, DMI_BOARD_VENDOR, 4); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 305 | dmi_save_ident(dm, DMI_BOARD_NAME, 5); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 306 | dmi_save_ident(dm, DMI_BOARD_VERSION, 6); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 307 | dmi_save_ident(dm, DMI_BOARD_SERIAL, 7); |
| 308 | dmi_save_ident(dm, DMI_BOARD_ASSET_TAG, 8); |
| 309 | break; |
| 310 | case 3: /* Chassis Information */ |
| 311 | dmi_save_ident(dm, DMI_CHASSIS_VENDOR, 4); |
| 312 | dmi_save_type(dm, DMI_CHASSIS_TYPE, 5); |
| 313 | dmi_save_ident(dm, DMI_CHASSIS_VERSION, 6); |
| 314 | dmi_save_ident(dm, DMI_CHASSIS_SERIAL, 7); |
| 315 | dmi_save_ident(dm, DMI_CHASSIS_ASSET_TAG, 8); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 316 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 317 | case 10: /* Onboard Devices Information */ |
| 318 | dmi_save_devices(dm); |
| 319 | break; |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 320 | case 11: /* OEM Strings */ |
| 321 | dmi_save_oem_strings_devices(dm); |
| 322 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 323 | case 38: /* IPMI Device Information */ |
| 324 | dmi_save_ipmi_device(dm); |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 325 | break; |
| 326 | case 41: /* Onboard Devices Extended Information */ |
| 327 | dmi_save_extended_devices(dm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | } |
| 329 | } |
| 330 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 331 | static int __init dmi_present(const char __iomem *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | { |
Andrey Panin | 61e032fa | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 333 | u8 buf[15]; |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 334 | |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 335 | memcpy_fromio(buf, p, 15); |
| 336 | if ((memcmp(buf, "_DMI_", 5) == 0) && dmi_checksum(buf)) { |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 337 | dmi_num = (buf[13] << 8) | buf[12]; |
| 338 | dmi_len = (buf[7] << 8) | buf[6]; |
| 339 | dmi_base = (buf[11] << 24) | (buf[10] << 16) | |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 340 | (buf[9] << 8) | buf[8]; |
| 341 | |
| 342 | /* |
| 343 | * DMI version 0.0 means that the real version is taken from |
| 344 | * the SMBIOS version, which we don't know at this point. |
| 345 | */ |
| 346 | if (buf[14] != 0) |
| 347 | printk(KERN_INFO "DMI %d.%d present.\n", |
| 348 | buf[14] >> 4, buf[14] & 0xF); |
| 349 | else |
| 350 | printk(KERN_INFO "DMI present.\n"); |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 351 | if (dmi_walk_early(dmi_decode) == 0) |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 352 | return 0; |
| 353 | } |
| 354 | return 1; |
| 355 | } |
| 356 | |
| 357 | void __init dmi_scan_machine(void) |
| 358 | { |
Andrey Panin | 61e032fa | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 359 | char __iomem *p, *q; |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 360 | int rc; |
Andrey Panin | 61e032fa | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 361 | |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 362 | if (efi_enabled) { |
Bjorn Helgaas | b2c99e3 | 2006-03-26 01:37:08 -0800 | [diff] [blame] | 363 | if (efi.smbios == EFI_INVALID_TABLE_ADDR) |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 364 | goto out; |
Andrey Panin | 61e032fa | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 365 | |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 366 | /* This is called as a core_initcall() because it isn't |
| 367 | * needed during early boot. This also means we can |
| 368 | * iounmap the space when we're done with it. |
| 369 | */ |
Bjorn Helgaas | b2c99e3 | 2006-03-26 01:37:08 -0800 | [diff] [blame] | 370 | p = dmi_ioremap(efi.smbios, 32); |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 371 | if (p == NULL) |
| 372 | goto out; |
Andrey Panin | 61e032fa | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 373 | |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 374 | rc = dmi_present(p + 0x10); /* offset of _DMI_ string */ |
Tolentino, Matthew E | 23dd842 | 2006-03-26 01:37:09 -0800 | [diff] [blame] | 375 | dmi_iounmap(p, 32); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 376 | if (!rc) { |
| 377 | dmi_available = 1; |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 378 | return; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 379 | } |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 380 | } |
| 381 | else { |
| 382 | /* |
| 383 | * no iounmap() for that ioremap(); it would be a no-op, but |
| 384 | * it's so early in setup that sucker gets confused into doing |
| 385 | * what it shouldn't if we actually call it. |
| 386 | */ |
| 387 | p = dmi_ioremap(0xF0000, 0x10000); |
| 388 | if (p == NULL) |
| 389 | goto out; |
Andrey Panin | 61e032fa | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 390 | |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 391 | for (q = p; q < p + 0x10000; q += 16) { |
| 392 | rc = dmi_present(q); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 393 | if (!rc) { |
| 394 | dmi_available = 1; |
Ingo Molnar | 0d64484 | 2008-01-30 13:33:09 +0100 | [diff] [blame] | 395 | dmi_iounmap(p, 0x10000); |
Andrey Panin | 61e032fa | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 396 | return; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 397 | } |
Andrey Panin | 61e032fa | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 398 | } |
Yinghai Lu | 3212bff | 2008-01-30 13:33:32 +0100 | [diff] [blame] | 399 | dmi_iounmap(p, 0x10000); |
Andrey Panin | 61e032fa | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 400 | } |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 401 | out: printk(KERN_INFO "DMI not present or invalid.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | } |
| 403 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | /** |
| 405 | * dmi_check_system - check system DMI data |
| 406 | * @list: array of dmi_system_id structures to match against |
Randy Dunlap | b0ef371 | 2006-06-25 05:49:18 -0700 | [diff] [blame] | 407 | * All non-null elements of the list must match |
| 408 | * their slot's (field index's) data (i.e., each |
| 409 | * list string must be a substring of the specified |
| 410 | * DMI slot's string data) to be considered a |
| 411 | * successful match. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | * |
| 413 | * Walk the blacklist table running matching functions until someone |
| 414 | * 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] | 415 | * each successful match. Returns the number of matches. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 417 | int dmi_check_system(const struct dmi_system_id *list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | { |
| 419 | int i, count = 0; |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 420 | const struct dmi_system_id *d = list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | |
| 422 | while (d->ident) { |
| 423 | for (i = 0; i < ARRAY_SIZE(d->matches); i++) { |
| 424 | int s = d->matches[i].slot; |
| 425 | if (s == DMI_NONE) |
| 426 | continue; |
| 427 | if (dmi_ident[s] && strstr(dmi_ident[s], d->matches[i].substr)) |
| 428 | continue; |
| 429 | /* No match */ |
| 430 | goto fail; |
| 431 | } |
Robert Love | 640e803 | 2005-09-06 15:18:30 -0700 | [diff] [blame] | 432 | count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | if (d->callback && d->callback(d)) |
| 434 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | fail: d++; |
| 436 | } |
| 437 | |
| 438 | return count; |
| 439 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | EXPORT_SYMBOL(dmi_check_system); |
| 441 | |
| 442 | /** |
| 443 | * dmi_get_system_info - return DMI data value |
Randy Dunlap | b0ef371 | 2006-06-25 05:49:18 -0700 | [diff] [blame] | 444 | * @field: data index (see enum dmi_field) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | * |
| 446 | * Returns one DMI data value, can be used to perform |
| 447 | * complex DMI data checks. |
| 448 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 449 | const char *dmi_get_system_info(int field) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | { |
| 451 | return dmi_ident[field]; |
| 452 | } |
Dmitry Torokhov | e70c9d5 | 2005-06-25 14:54:25 -0700 | [diff] [blame] | 453 | EXPORT_SYMBOL(dmi_get_system_info); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 454 | |
Andi Kleen | a1bae67 | 2006-10-21 18:37:02 +0200 | [diff] [blame] | 455 | |
| 456 | /** |
| 457 | * dmi_name_in_vendors - Check if string is anywhere in the DMI vendor information. |
| 458 | * @str: Case sensitive Name |
| 459 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 460 | int dmi_name_in_vendors(const char *str) |
Andi Kleen | a1bae67 | 2006-10-21 18:37:02 +0200 | [diff] [blame] | 461 | { |
| 462 | static int fields[] = { DMI_BIOS_VENDOR, DMI_BIOS_VERSION, DMI_SYS_VENDOR, |
| 463 | DMI_PRODUCT_NAME, DMI_PRODUCT_VERSION, DMI_BOARD_VENDOR, |
| 464 | DMI_BOARD_NAME, DMI_BOARD_VERSION, DMI_NONE }; |
| 465 | int i; |
| 466 | for (i = 0; fields[i] != DMI_NONE; i++) { |
| 467 | int f = fields[i]; |
| 468 | if (dmi_ident[f] && strstr(dmi_ident[f], str)) |
| 469 | return 1; |
| 470 | } |
| 471 | return 0; |
| 472 | } |
| 473 | EXPORT_SYMBOL(dmi_name_in_vendors); |
| 474 | |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 475 | /** |
| 476 | * dmi_find_device - find onboard device by type/name |
| 477 | * @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] | 478 | * @name: device name string or %NULL to match all |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 479 | * @from: previous device found in search, or %NULL for new search. |
| 480 | * |
| 481 | * Iterates through the list of known onboard devices. If a device is |
| 482 | * found with a matching @vendor and @device, a pointer to its device |
| 483 | * structure is returned. Otherwise, %NULL is returned. |
Randy Dunlap | b0ef371 | 2006-06-25 05:49:18 -0700 | [diff] [blame] | 484 | * A new search is initiated by passing %NULL as the @from argument. |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 485 | * If @from is not %NULL, searches continue from next device. |
| 486 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 487 | const struct dmi_device * dmi_find_device(int type, const char *name, |
| 488 | const struct dmi_device *from) |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 489 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 490 | const struct list_head *head = from ? &from->list : &dmi_devices; |
| 491 | struct list_head *d; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 492 | |
| 493 | for(d = head->next; d != &dmi_devices; d = d->next) { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 494 | const struct dmi_device *dev = |
| 495 | list_entry(d, struct dmi_device, list); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 496 | |
| 497 | if (((type == DMI_DEV_TYPE_ANY) || (dev->type == type)) && |
| 498 | ((name == NULL) || (strcmp(dev->name, name) == 0))) |
| 499 | return dev; |
| 500 | } |
| 501 | |
| 502 | return NULL; |
| 503 | } |
| 504 | EXPORT_SYMBOL(dmi_find_device); |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 505 | |
| 506 | /** |
| 507 | * dmi_get_year - Return year of a DMI date |
| 508 | * @field: data index (like dmi_get_system_info) |
| 509 | * |
| 510 | * Returns -1 when the field doesn't exist. 0 when it is broken. |
| 511 | */ |
| 512 | int dmi_get_year(int field) |
| 513 | { |
| 514 | int year; |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 515 | const char *s = dmi_get_system_info(field); |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 516 | |
| 517 | if (!s) |
| 518 | return -1; |
| 519 | if (*s == '\0') |
| 520 | return 0; |
| 521 | s = strrchr(s, '/'); |
| 522 | if (!s) |
| 523 | return 0; |
| 524 | |
| 525 | s += 1; |
| 526 | year = simple_strtoul(s, NULL, 0); |
| 527 | if (year && year < 100) { /* 2-digit year */ |
| 528 | year += 1900; |
| 529 | if (year < 1996) /* no dates < spec 1.0 */ |
| 530 | year += 100; |
| 531 | } |
| 532 | |
| 533 | return year; |
| 534 | } |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 535 | |
| 536 | /** |
| 537 | * dmi_walk - Walk the DMI table and get called back for every record |
| 538 | * @decode: Callback function |
| 539 | * |
| 540 | * Returns -1 when the DMI table can't be reached, 0 on success. |
| 541 | */ |
| 542 | int dmi_walk(void (*decode)(const struct dmi_header *)) |
| 543 | { |
| 544 | u8 *buf; |
| 545 | |
| 546 | if (!dmi_available) |
| 547 | return -1; |
| 548 | |
| 549 | buf = ioremap(dmi_base, dmi_len); |
| 550 | if (buf == NULL) |
| 551 | return -1; |
| 552 | |
| 553 | dmi_table(buf, dmi_len, dmi_num, decode); |
| 554 | |
| 555 | iounmap(buf); |
| 556 | return 0; |
| 557 | } |
| 558 | EXPORT_SYMBOL_GPL(dmi_walk); |