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> |
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 | |
Paul Jackson | cb5dd7c | 2008-05-14 08:15:16 -0700 | [diff] [blame] | 11 | /* |
| 12 | * DMI stands for "Desktop Management Interface". It is part |
| 13 | * of and an antecedent to, SMBIOS, which stands for System |
| 14 | * Management BIOS. See further: http://www.dmtf.org/standards |
| 15 | */ |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 16 | static char dmi_empty_string[] = " "; |
| 17 | |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 18 | /* |
| 19 | * Catch too early calls to dmi_check_system(): |
| 20 | */ |
| 21 | static int dmi_initialized; |
| 22 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 23 | 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] | 24 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 25 | const u8 *bp = ((u8 *) dm) + dm->length; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 26 | |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 27 | if (s) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | s--; |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 29 | while (s > 0 && *bp) { |
| 30 | bp += strlen(bp) + 1; |
| 31 | s--; |
| 32 | } |
| 33 | |
| 34 | if (*bp != 0) { |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 35 | size_t len = strlen(bp)+1; |
| 36 | size_t cmp_len = len > 8 ? 8 : len; |
| 37 | |
| 38 | if (!memcmp(bp, dmi_empty_string, cmp_len)) |
| 39 | return dmi_empty_string; |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 40 | return bp; |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 41 | } |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 42 | } |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 43 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 44 | return ""; |
| 45 | } |
| 46 | |
| 47 | static char * __init dmi_string(const struct dmi_header *dm, u8 s) |
| 48 | { |
| 49 | const char *bp = dmi_string_nosave(dm, s); |
| 50 | char *str; |
| 51 | size_t len; |
| 52 | |
| 53 | if (bp == dmi_empty_string) |
| 54 | return dmi_empty_string; |
| 55 | |
| 56 | len = strlen(bp) + 1; |
| 57 | str = dmi_alloc(len); |
| 58 | if (str != NULL) |
| 59 | strcpy(str, bp); |
| 60 | else |
| 61 | printk(KERN_ERR "dmi_string: cannot allocate %Zu bytes.\n", len); |
| 62 | |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 63 | return str; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | } |
| 65 | |
| 66 | /* |
| 67 | * We have to be cautious here. We have seen BIOSes with DMI pointers |
| 68 | * pointing to completely the wrong place for example |
| 69 | */ |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 70 | static void dmi_table(u8 *buf, int len, int num, |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 71 | void (*decode)(const struct dmi_header *, void *), |
| 72 | void *private_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | { |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 74 | u8 *data = buf; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 75 | int i = 0; |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 76 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | /* |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 78 | * Stop when we see all the items the table claimed to have |
| 79 | * OR we run off the end of the table (also happens) |
| 80 | */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 81 | while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 82 | const struct dmi_header *dm = (const struct dmi_header *)data; |
| 83 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | /* |
Alan Cox | 8638545 | 2008-11-07 16:03:46 +0000 | [diff] [blame] | 85 | * We want to know the total length (formatted area and |
| 86 | * strings) before decoding to make sure we won't run off the |
| 87 | * table in dmi_decode or dmi_string |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 89 | data += dm->length; |
| 90 | while ((data - buf < len - 1) && (data[0] || data[1])) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | data++; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 92 | if (data - buf < len - 1) |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 93 | decode(dm, private_data); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 94 | data += 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | i++; |
| 96 | } |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | static u32 dmi_base; |
| 100 | static u16 dmi_len; |
| 101 | static u16 dmi_num; |
| 102 | |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 103 | static int __init dmi_walk_early(void (*decode)(const struct dmi_header *, |
| 104 | void *)) |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 105 | { |
| 106 | u8 *buf; |
| 107 | |
| 108 | buf = dmi_ioremap(dmi_base, dmi_len); |
| 109 | if (buf == NULL) |
| 110 | return -1; |
| 111 | |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 112 | dmi_table(buf, dmi_len, dmi_num, decode, NULL); |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 113 | |
| 114 | dmi_iounmap(buf, dmi_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | return 0; |
| 116 | } |
| 117 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 118 | static int __init dmi_checksum(const u8 *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | { |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 120 | u8 sum = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | int a; |
Bjorn Helgaas | 4f705ae | 2006-04-03 17:09:22 -0700 | [diff] [blame] | 122 | |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 123 | for (a = 0; a < 15; a++) |
| 124 | sum += buf[a]; |
| 125 | |
| 126 | return sum == 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | } |
| 128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | static char *dmi_ident[DMI_STRING_MAX]; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 130 | static LIST_HEAD(dmi_devices); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 131 | int dmi_available; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | |
| 133 | /* |
| 134 | * Save a DMI string |
| 135 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 136 | 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] | 137 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 138 | const char *d = (const char*) dm; |
| 139 | char *p; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | if (dmi_ident[slot]) |
| 142 | return; |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 143 | |
Andrey Panin | c3c7120 | 2005-09-06 15:18:28 -0700 | [diff] [blame] | 144 | p = dmi_string(dm, d[string]); |
| 145 | if (p == NULL) |
| 146 | return; |
| 147 | |
| 148 | dmi_ident[slot] = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | } |
| 150 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 151 | 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] | 152 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 153 | const u8 *d = (u8*) dm + index; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 154 | char *s; |
| 155 | int is_ff = 1, is_00 = 1, i; |
| 156 | |
| 157 | if (dmi_ident[slot]) |
| 158 | return; |
| 159 | |
| 160 | for (i = 0; i < 16 && (is_ff || is_00); i++) { |
| 161 | if(d[i] != 0x00) is_ff = 0; |
| 162 | if(d[i] != 0xFF) is_00 = 0; |
| 163 | } |
| 164 | |
| 165 | if (is_ff || is_00) |
| 166 | return; |
| 167 | |
| 168 | s = dmi_alloc(16*2+4+1); |
| 169 | if (!s) |
| 170 | return; |
| 171 | |
Joe Perches | bc058f65 | 2009-12-14 18:01:11 -0800 | [diff] [blame] | 172 | sprintf(s, "%pUB", d); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 173 | |
| 174 | dmi_ident[slot] = s; |
| 175 | } |
| 176 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 177 | 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] | 178 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 179 | const u8 *d = (u8*) dm + index; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 180 | char *s; |
| 181 | |
| 182 | if (dmi_ident[slot]) |
| 183 | return; |
| 184 | |
| 185 | s = dmi_alloc(4); |
| 186 | if (!s) |
| 187 | return; |
| 188 | |
| 189 | sprintf(s, "%u", *d & 0x7F); |
| 190 | dmi_ident[slot] = s; |
| 191 | } |
| 192 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 193 | static void __init dmi_save_one_device(int type, const char *name) |
| 194 | { |
| 195 | struct dmi_device *dev; |
| 196 | |
| 197 | /* No duplicate device */ |
| 198 | if (dmi_find_device(type, name, NULL)) |
| 199 | return; |
| 200 | |
| 201 | dev = dmi_alloc(sizeof(*dev) + strlen(name) + 1); |
| 202 | if (!dev) { |
| 203 | printk(KERN_ERR "dmi_save_one_device: out of memory.\n"); |
| 204 | return; |
| 205 | } |
| 206 | |
| 207 | dev->type = type; |
| 208 | strcpy((char *)(dev + 1), name); |
| 209 | dev->name = (char *)(dev + 1); |
| 210 | dev->device_data = NULL; |
| 211 | list_add(&dev->list, &dmi_devices); |
| 212 | } |
| 213 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 214 | static void __init dmi_save_devices(const struct dmi_header *dm) |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 215 | { |
| 216 | int i, count = (dm->length - sizeof(struct dmi_header)) / 2; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 217 | |
| 218 | for (i = 0; i < count; i++) { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 219 | const char *d = (char *)(dm + 1) + (i * 2); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 220 | |
| 221 | /* Skip disabled device */ |
| 222 | if ((*d & 0x80) == 0) |
| 223 | continue; |
| 224 | |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 225 | dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d + 1))); |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 226 | } |
| 227 | } |
| 228 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 229 | 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] | 230 | { |
| 231 | int i, count = *(u8 *)(dm + 1); |
| 232 | struct dmi_device *dev; |
| 233 | |
| 234 | for (i = 1; i <= count; i++) { |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 235 | char *devname = dmi_string(dm, i); |
| 236 | |
Jean Delvare | 43fe105 | 2008-02-23 15:23:55 -0800 | [diff] [blame] | 237 | if (devname == dmi_empty_string) |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 238 | continue; |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 239 | |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 240 | dev = dmi_alloc(sizeof(*dev)); |
| 241 | if (!dev) { |
| 242 | printk(KERN_ERR |
| 243 | "dmi_save_oem_strings_devices: out of memory.\n"); |
| 244 | break; |
| 245 | } |
| 246 | |
| 247 | dev->type = DMI_DEV_TYPE_OEM_STRING; |
Parag Warudkar | 79da472 | 2008-01-30 13:31:59 +0100 | [diff] [blame] | 248 | dev->name = devname; |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 249 | dev->device_data = NULL; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 250 | |
| 251 | list_add(&dev->list, &dmi_devices); |
| 252 | } |
| 253 | } |
| 254 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 255 | static void __init dmi_save_ipmi_device(const struct dmi_header *dm) |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 256 | { |
| 257 | struct dmi_device *dev; |
| 258 | void * data; |
| 259 | |
Andi Kleen | e992867 | 2006-01-11 22:43:33 +0100 | [diff] [blame] | 260 | data = dmi_alloc(dm->length); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 261 | if (data == NULL) { |
| 262 | printk(KERN_ERR "dmi_save_ipmi_device: out of memory.\n"); |
| 263 | return; |
| 264 | } |
| 265 | |
| 266 | memcpy(data, dm, dm->length); |
| 267 | |
Andi Kleen | e992867 | 2006-01-11 22:43:33 +0100 | [diff] [blame] | 268 | dev = dmi_alloc(sizeof(*dev)); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 269 | if (!dev) { |
| 270 | printk(KERN_ERR "dmi_save_ipmi_device: out of memory.\n"); |
| 271 | return; |
| 272 | } |
| 273 | |
| 274 | dev->type = DMI_DEV_TYPE_IPMI; |
| 275 | dev->name = "IPMI controller"; |
| 276 | dev->device_data = data; |
| 277 | |
Carol Hebert | abd24df | 2008-04-04 14:30:03 -0700 | [diff] [blame] | 278 | list_add_tail(&dev->list, &dmi_devices); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 279 | } |
| 280 | |
Narendra K | 911e1c9 | 2010-07-26 05:56:50 -0500 | [diff] [blame] | 281 | static void __init dmi_save_dev_onboard(int instance, int segment, int bus, |
| 282 | int devfn, const char *name) |
| 283 | { |
| 284 | struct dmi_dev_onboard *onboard_dev; |
| 285 | |
| 286 | onboard_dev = dmi_alloc(sizeof(*onboard_dev) + strlen(name) + 1); |
| 287 | if (!onboard_dev) { |
| 288 | printk(KERN_ERR "dmi_save_dev_onboard: out of memory.\n"); |
| 289 | return; |
| 290 | } |
| 291 | onboard_dev->instance = instance; |
| 292 | onboard_dev->segment = segment; |
| 293 | onboard_dev->bus = bus; |
| 294 | onboard_dev->devfn = devfn; |
| 295 | |
| 296 | strcpy((char *)&onboard_dev[1], name); |
| 297 | onboard_dev->dev.type = DMI_DEV_TYPE_DEV_ONBOARD; |
| 298 | onboard_dev->dev.name = (char *)&onboard_dev[1]; |
| 299 | onboard_dev->dev.device_data = onboard_dev; |
| 300 | |
| 301 | list_add(&onboard_dev->dev.list, &dmi_devices); |
| 302 | } |
| 303 | |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 304 | static void __init dmi_save_extended_devices(const struct dmi_header *dm) |
| 305 | { |
| 306 | const u8 *d = (u8*) dm + 5; |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 307 | |
| 308 | /* Skip disabled device */ |
| 309 | if ((*d & 0x80) == 0) |
| 310 | return; |
| 311 | |
Narendra K | 911e1c9 | 2010-07-26 05:56:50 -0500 | [diff] [blame] | 312 | dmi_save_dev_onboard(*(d+1), *(u16 *)(d+2), *(d+4), *(d+5), |
| 313 | dmi_string_nosave(dm, *(d-1))); |
Jean Delvare | f3069ae | 2008-02-23 15:23:46 -0800 | [diff] [blame] | 314 | 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] | 315 | } |
| 316 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | * Process a DMI table entry. Right now all we care about are the BIOS |
| 319 | * and machine entries. For 2.5 we should pull the smbus controller info |
| 320 | * out of here. |
| 321 | */ |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 322 | static void __init dmi_decode(const struct dmi_header *dm, void *dummy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | { |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 324 | switch(dm->type) { |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 325 | case 0: /* BIOS Information */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 326 | dmi_save_ident(dm, DMI_BIOS_VENDOR, 4); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 327 | dmi_save_ident(dm, DMI_BIOS_VERSION, 5); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 328 | dmi_save_ident(dm, DMI_BIOS_DATE, 8); |
| 329 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 330 | case 1: /* System Information */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 331 | dmi_save_ident(dm, DMI_SYS_VENDOR, 4); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 332 | dmi_save_ident(dm, DMI_PRODUCT_NAME, 5); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 333 | dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 334 | dmi_save_ident(dm, DMI_PRODUCT_SERIAL, 7); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 335 | dmi_save_uuid(dm, DMI_PRODUCT_UUID, 8); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 336 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 337 | case 2: /* Base Board Information */ |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 338 | dmi_save_ident(dm, DMI_BOARD_VENDOR, 4); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 339 | dmi_save_ident(dm, DMI_BOARD_NAME, 5); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 340 | dmi_save_ident(dm, DMI_BOARD_VERSION, 6); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 341 | dmi_save_ident(dm, DMI_BOARD_SERIAL, 7); |
| 342 | dmi_save_ident(dm, DMI_BOARD_ASSET_TAG, 8); |
| 343 | break; |
| 344 | case 3: /* Chassis Information */ |
| 345 | dmi_save_ident(dm, DMI_CHASSIS_VENDOR, 4); |
| 346 | dmi_save_type(dm, DMI_CHASSIS_TYPE, 5); |
| 347 | dmi_save_ident(dm, DMI_CHASSIS_VERSION, 6); |
| 348 | dmi_save_ident(dm, DMI_CHASSIS_SERIAL, 7); |
| 349 | dmi_save_ident(dm, DMI_CHASSIS_ASSET_TAG, 8); |
Andrey Panin | 1249c51 | 2005-06-25 14:54:47 -0700 | [diff] [blame] | 350 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 351 | case 10: /* Onboard Devices Information */ |
| 352 | dmi_save_devices(dm); |
| 353 | break; |
Shem Multinymous | 2e0c1f6 | 2006-09-29 01:59:37 -0700 | [diff] [blame] | 354 | case 11: /* OEM Strings */ |
| 355 | dmi_save_oem_strings_devices(dm); |
| 356 | break; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 357 | case 38: /* IPMI Device Information */ |
| 358 | dmi_save_ipmi_device(dm); |
Wim Van Sebroeck | b4bd7d5 | 2008-02-08 04:20:58 -0800 | [diff] [blame] | 359 | break; |
| 360 | case 41: /* Onboard Devices Extended Information */ |
| 361 | dmi_save_extended_devices(dm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | } |
| 363 | } |
| 364 | |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 365 | static void __init print_filtered(const char *info) |
| 366 | { |
| 367 | const char *p; |
| 368 | |
| 369 | if (!info) |
| 370 | return; |
| 371 | |
| 372 | for (p = info; *p; p++) |
| 373 | if (isprint(*p)) |
| 374 | printk(KERN_CONT "%c", *p); |
| 375 | else |
| 376 | printk(KERN_CONT "\\x%02x", *p & 0xff); |
| 377 | } |
| 378 | |
| 379 | static void __init dmi_dump_ids(void) |
| 380 | { |
Naga Chumbalkar | 84e383b | 2011-02-14 22:47:17 +0000 | [diff] [blame] | 381 | const char *board; /* Board Name is optional */ |
| 382 | |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 383 | printk(KERN_DEBUG "DMI: "); |
Naga Chumbalkar | 84e383b | 2011-02-14 22:47:17 +0000 | [diff] [blame] | 384 | print_filtered(dmi_get_system_info(DMI_SYS_VENDOR)); |
| 385 | printk(KERN_CONT " "); |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 386 | print_filtered(dmi_get_system_info(DMI_PRODUCT_NAME)); |
Naga Chumbalkar | 84e383b | 2011-02-14 22:47:17 +0000 | [diff] [blame] | 387 | board = dmi_get_system_info(DMI_BOARD_NAME); |
| 388 | if (board) { |
| 389 | printk(KERN_CONT "/"); |
| 390 | print_filtered(board); |
| 391 | } |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 392 | printk(KERN_CONT ", BIOS "); |
| 393 | print_filtered(dmi_get_system_info(DMI_BIOS_VERSION)); |
| 394 | printk(KERN_CONT " "); |
| 395 | print_filtered(dmi_get_system_info(DMI_BIOS_DATE)); |
| 396 | printk(KERN_CONT "\n"); |
| 397 | } |
| 398 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 399 | static int __init dmi_present(const char __iomem *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | { |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 401 | u8 buf[15]; |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 402 | |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 403 | memcpy_fromio(buf, p, 15); |
| 404 | if ((memcmp(buf, "_DMI_", 5) == 0) && dmi_checksum(buf)) { |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 405 | dmi_num = (buf[13] << 8) | buf[12]; |
| 406 | dmi_len = (buf[7] << 8) | buf[6]; |
| 407 | dmi_base = (buf[11] << 24) | (buf[10] << 16) | |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 408 | (buf[9] << 8) | buf[8]; |
| 409 | |
| 410 | /* |
| 411 | * DMI version 0.0 means that the real version is taken from |
| 412 | * the SMBIOS version, which we don't know at this point. |
| 413 | */ |
| 414 | if (buf[14] != 0) |
| 415 | printk(KERN_INFO "DMI %d.%d present.\n", |
| 416 | buf[14] >> 4, buf[14] & 0xF); |
| 417 | else |
| 418 | printk(KERN_INFO "DMI present.\n"); |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 419 | if (dmi_walk_early(dmi_decode) == 0) { |
| 420 | dmi_dump_ids(); |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 421 | return 0; |
Bjorn Helgaas | 8881cdc | 2010-10-27 15:32:59 -0700 | [diff] [blame] | 422 | } |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 423 | } |
| 424 | return 1; |
| 425 | } |
| 426 | |
| 427 | void __init dmi_scan_machine(void) |
| 428 | { |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 429 | char __iomem *p, *q; |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 430 | int rc; |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 431 | |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 432 | if (efi_enabled) { |
Bjorn Helgaas | b2c99e3 | 2006-03-26 01:37:08 -0800 | [diff] [blame] | 433 | if (efi.smbios == EFI_INVALID_TABLE_ADDR) |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 434 | goto error; |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 435 | |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 436 | /* This is called as a core_initcall() because it isn't |
| 437 | * needed during early boot. This also means we can |
| 438 | * iounmap the space when we're done with it. |
| 439 | */ |
Bjorn Helgaas | b2c99e3 | 2006-03-26 01:37:08 -0800 | [diff] [blame] | 440 | p = dmi_ioremap(efi.smbios, 32); |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 441 | if (p == NULL) |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 442 | goto error; |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 443 | |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 444 | rc = dmi_present(p + 0x10); /* offset of _DMI_ string */ |
Tolentino, Matthew E | 23dd842 | 2006-03-26 01:37:09 -0800 | [diff] [blame] | 445 | dmi_iounmap(p, 32); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 446 | if (!rc) { |
| 447 | dmi_available = 1; |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 448 | goto out; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 449 | } |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 450 | } |
| 451 | else { |
| 452 | /* |
| 453 | * no iounmap() for that ioremap(); it would be a no-op, but |
| 454 | * it's so early in setup that sucker gets confused into doing |
| 455 | * what it shouldn't if we actually call it. |
| 456 | */ |
| 457 | p = dmi_ioremap(0xF0000, 0x10000); |
| 458 | if (p == NULL) |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 459 | goto error; |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 460 | |
Matt Domsch | 3ed3bce | 2006-03-26 01:37:03 -0800 | [diff] [blame] | 461 | for (q = p; q < p + 0x10000; q += 16) { |
| 462 | rc = dmi_present(q); |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 463 | if (!rc) { |
| 464 | dmi_available = 1; |
Ingo Molnar | 0d64484 | 2008-01-30 13:33:09 +0100 | [diff] [blame] | 465 | dmi_iounmap(p, 0x10000); |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 466 | goto out; |
Lennart Poettering | 4f5c791 | 2007-05-08 22:07:02 +0200 | [diff] [blame] | 467 | } |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 468 | } |
Yinghai Lu | 3212bff | 2008-01-30 13:33:32 +0100 | [diff] [blame] | 469 | dmi_iounmap(p, 0x10000); |
Andrey Panin | 61e032f | 2005-09-06 15:18:26 -0700 | [diff] [blame] | 470 | } |
Ingo Molnar | 9a22b6e | 2008-09-18 12:50:18 +0200 | [diff] [blame] | 471 | error: |
| 472 | printk(KERN_INFO "DMI not present or invalid.\n"); |
| 473 | out: |
| 474 | dmi_initialized = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | } |
| 476 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | /** |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 478 | * dmi_matches - check if dmi_system_id structure matches system DMI data |
| 479 | * @dmi: pointer to the dmi_system_id structure to check |
| 480 | */ |
| 481 | static bool dmi_matches(const struct dmi_system_id *dmi) |
| 482 | { |
| 483 | int i; |
| 484 | |
| 485 | WARN(!dmi_initialized, KERN_ERR "dmi check: not initialized yet.\n"); |
| 486 | |
| 487 | for (i = 0; i < ARRAY_SIZE(dmi->matches); i++) { |
| 488 | int s = dmi->matches[i].slot; |
| 489 | if (s == DMI_NONE) |
Dmitry Torokhov | 7575750 | 2009-12-04 10:24:19 -0800 | [diff] [blame] | 490 | break; |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 491 | if (dmi_ident[s] |
| 492 | && strstr(dmi_ident[s], dmi->matches[i].substr)) |
| 493 | continue; |
| 494 | /* No match */ |
| 495 | return false; |
| 496 | } |
| 497 | return true; |
| 498 | } |
| 499 | |
| 500 | /** |
Dmitry Torokhov | 7575750 | 2009-12-04 10:24:19 -0800 | [diff] [blame] | 501 | * dmi_is_end_of_table - check for end-of-table marker |
| 502 | * @dmi: pointer to the dmi_system_id structure to check |
| 503 | */ |
| 504 | static bool dmi_is_end_of_table(const struct dmi_system_id *dmi) |
| 505 | { |
| 506 | return dmi->matches[0].slot == DMI_NONE; |
| 507 | } |
| 508 | |
| 509 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | * dmi_check_system - check system DMI data |
| 511 | * @list: array of dmi_system_id structures to match against |
Randy Dunlap | b0ef371 | 2006-06-25 05:49:18 -0700 | [diff] [blame] | 512 | * All non-null elements of the list must match |
| 513 | * their slot's (field index's) data (i.e., each |
| 514 | * list string must be a substring of the specified |
| 515 | * DMI slot's string data) to be considered a |
| 516 | * successful match. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | * |
| 518 | * Walk the blacklist table running matching functions until someone |
| 519 | * 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] | 520 | * each successful match. Returns the number of matches. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 522 | int dmi_check_system(const struct dmi_system_id *list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | { |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 524 | int count = 0; |
| 525 | const struct dmi_system_id *d; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | |
Dmitry Torokhov | 7575750 | 2009-12-04 10:24:19 -0800 | [diff] [blame] | 527 | for (d = list; !dmi_is_end_of_table(d); d++) |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 528 | if (dmi_matches(d)) { |
| 529 | count++; |
| 530 | if (d->callback && d->callback(d)) |
| 531 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
| 534 | return count; |
| 535 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | EXPORT_SYMBOL(dmi_check_system); |
| 537 | |
| 538 | /** |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 539 | * dmi_first_match - find dmi_system_id structure matching system DMI data |
| 540 | * @list: array of dmi_system_id structures to match against |
| 541 | * All non-null elements of the list must match |
| 542 | * their slot's (field index's) data (i.e., each |
| 543 | * list string must be a substring of the specified |
| 544 | * DMI slot's string data) to be considered a |
| 545 | * successful match. |
| 546 | * |
| 547 | * Walk the blacklist table until the first match is found. Return the |
| 548 | * pointer to the matching entry or NULL if there's no match. |
| 549 | */ |
| 550 | const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list) |
| 551 | { |
| 552 | const struct dmi_system_id *d; |
| 553 | |
Dmitry Torokhov | 7575750 | 2009-12-04 10:24:19 -0800 | [diff] [blame] | 554 | for (d = list; !dmi_is_end_of_table(d); d++) |
Rafael J. Wysocki | d7b1956 | 2009-01-19 20:55:50 +0100 | [diff] [blame] | 555 | if (dmi_matches(d)) |
| 556 | return d; |
| 557 | |
| 558 | return NULL; |
| 559 | } |
| 560 | EXPORT_SYMBOL(dmi_first_match); |
| 561 | |
| 562 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | * dmi_get_system_info - return DMI data value |
Randy Dunlap | b0ef371 | 2006-06-25 05:49:18 -0700 | [diff] [blame] | 564 | * @field: data index (see enum dmi_field) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | * |
| 566 | * Returns one DMI data value, can be used to perform |
| 567 | * complex DMI data checks. |
| 568 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 569 | const char *dmi_get_system_info(int field) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | { |
| 571 | return dmi_ident[field]; |
| 572 | } |
Dmitry Torokhov | e70c9d5 | 2005-06-25 14:54:25 -0700 | [diff] [blame] | 573 | EXPORT_SYMBOL(dmi_get_system_info); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 574 | |
Alok Kataria | fd8cd7e | 2008-11-03 15:50:38 -0800 | [diff] [blame] | 575 | /** |
Randy Dunlap | c2bacfc | 2009-01-06 14:41:40 -0800 | [diff] [blame] | 576 | * dmi_name_in_serial - Check if string is in the DMI product serial information |
| 577 | * @str: string to check for |
Alok Kataria | fd8cd7e | 2008-11-03 15:50:38 -0800 | [diff] [blame] | 578 | */ |
| 579 | int dmi_name_in_serial(const char *str) |
| 580 | { |
| 581 | int f = DMI_PRODUCT_SERIAL; |
| 582 | if (dmi_ident[f] && strstr(dmi_ident[f], str)) |
| 583 | return 1; |
| 584 | return 0; |
| 585 | } |
Andi Kleen | a1bae67 | 2006-10-21 18:37:02 +0200 | [diff] [blame] | 586 | |
| 587 | /** |
Jean Delvare | 66e13e6 | 2011-11-15 14:36:09 -0800 | [diff] [blame] | 588 | * dmi_name_in_vendors - Check if string is in the DMI system or board vendor name |
Andi Kleen | a1bae67 | 2006-10-21 18:37:02 +0200 | [diff] [blame] | 589 | * @str: Case sensitive Name |
| 590 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 591 | int dmi_name_in_vendors(const char *str) |
Andi Kleen | a1bae67 | 2006-10-21 18:37:02 +0200 | [diff] [blame] | 592 | { |
Jean Delvare | 66e13e6 | 2011-11-15 14:36:09 -0800 | [diff] [blame] | 593 | static int fields[] = { DMI_SYS_VENDOR, DMI_BOARD_VENDOR, DMI_NONE }; |
Andi Kleen | a1bae67 | 2006-10-21 18:37:02 +0200 | [diff] [blame] | 594 | int i; |
| 595 | for (i = 0; fields[i] != DMI_NONE; i++) { |
| 596 | int f = fields[i]; |
| 597 | if (dmi_ident[f] && strstr(dmi_ident[f], str)) |
| 598 | return 1; |
| 599 | } |
| 600 | return 0; |
| 601 | } |
| 602 | EXPORT_SYMBOL(dmi_name_in_vendors); |
| 603 | |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 604 | /** |
| 605 | * dmi_find_device - find onboard device by type/name |
| 606 | * @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] | 607 | * @name: device name string or %NULL to match all |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 608 | * @from: previous device found in search, or %NULL for new search. |
| 609 | * |
| 610 | * Iterates through the list of known onboard devices. If a device is |
| 611 | * found with a matching @vendor and @device, a pointer to its device |
| 612 | * structure is returned. Otherwise, %NULL is returned. |
Randy Dunlap | b0ef371 | 2006-06-25 05:49:18 -0700 | [diff] [blame] | 613 | * A new search is initiated by passing %NULL as the @from argument. |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 614 | * If @from is not %NULL, searches continue from next device. |
| 615 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 616 | const struct dmi_device * dmi_find_device(int type, const char *name, |
| 617 | const struct dmi_device *from) |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 618 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 619 | const struct list_head *head = from ? &from->list : &dmi_devices; |
| 620 | struct list_head *d; |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 621 | |
| 622 | for(d = head->next; d != &dmi_devices; d = d->next) { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 623 | const struct dmi_device *dev = |
| 624 | list_entry(d, struct dmi_device, list); |
Andrey Panin | ebad6a4 | 2005-09-06 15:18:29 -0700 | [diff] [blame] | 625 | |
| 626 | if (((type == DMI_DEV_TYPE_ANY) || (dev->type == type)) && |
| 627 | ((name == NULL) || (strcmp(dev->name, name) == 0))) |
| 628 | return dev; |
| 629 | } |
| 630 | |
| 631 | return NULL; |
| 632 | } |
| 633 | EXPORT_SYMBOL(dmi_find_device); |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 634 | |
| 635 | /** |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 636 | * dmi_get_date - parse a DMI date |
| 637 | * @field: data index (see enum dmi_field) |
| 638 | * @yearp: optional out parameter for the year |
| 639 | * @monthp: optional out parameter for the month |
| 640 | * @dayp: optional out parameter for the day |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 641 | * |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 642 | * The date field is assumed to be in the form resembling |
| 643 | * [mm[/dd]]/yy[yy] and the result is stored in the out |
| 644 | * parameters any or all of which can be omitted. |
| 645 | * |
| 646 | * If the field doesn't exist, all out parameters are set to zero |
| 647 | * and false is returned. Otherwise, true is returned with any |
| 648 | * invalid part of date set to zero. |
| 649 | * |
| 650 | * On return, year, month and day are guaranteed to be in the |
| 651 | * range of [0,9999], [0,12] and [0,31] respectively. |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 652 | */ |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 653 | bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp) |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 654 | { |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 655 | int year = 0, month = 0, day = 0; |
| 656 | bool exists; |
| 657 | const char *s, *y; |
Tejun Heo | 02c24fa | 2009-08-16 21:01:22 +0900 | [diff] [blame] | 658 | char *e; |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 659 | |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 660 | s = dmi_get_system_info(field); |
| 661 | exists = s; |
| 662 | if (!exists) |
| 663 | goto out; |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 664 | |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 665 | /* |
| 666 | * Determine year first. We assume the date string resembles |
| 667 | * mm/dd/yy[yy] but the original code extracted only the year |
| 668 | * from the end. Keep the behavior in the spirit of no |
| 669 | * surprises. |
| 670 | */ |
| 671 | y = strrchr(s, '/'); |
| 672 | if (!y) |
| 673 | goto out; |
| 674 | |
| 675 | y++; |
| 676 | year = simple_strtoul(y, &e, 10); |
| 677 | if (y != e && year < 100) { /* 2-digit year */ |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 678 | year += 1900; |
| 679 | if (year < 1996) /* no dates < spec 1.0 */ |
| 680 | year += 100; |
| 681 | } |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 682 | if (year > 9999) /* year should fit in %04d */ |
| 683 | year = 0; |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 684 | |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 685 | /* parse the mm and dd */ |
| 686 | month = simple_strtoul(s, &e, 10); |
| 687 | if (s == e || *e != '/' || !month || month > 12) { |
| 688 | month = 0; |
| 689 | goto out; |
| 690 | } |
| 691 | |
| 692 | s = e + 1; |
| 693 | day = simple_strtoul(s, &e, 10); |
| 694 | if (s == y || s == e || *e != '/' || day > 31) |
| 695 | day = 0; |
| 696 | out: |
| 697 | if (yearp) |
| 698 | *yearp = year; |
| 699 | if (monthp) |
| 700 | *monthp = month; |
| 701 | if (dayp) |
| 702 | *dayp = day; |
| 703 | return exists; |
Andi Kleen | f083a32 | 2006-03-25 16:30:19 +0100 | [diff] [blame] | 704 | } |
Tejun Heo | 3e5cd1f | 2009-08-16 21:02:36 +0900 | [diff] [blame] | 705 | EXPORT_SYMBOL(dmi_get_date); |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 706 | |
| 707 | /** |
| 708 | * dmi_walk - Walk the DMI table and get called back for every record |
| 709 | * @decode: Callback function |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 710 | * @private_data: Private data to be passed to the callback function |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 711 | * |
| 712 | * Returns -1 when the DMI table can't be reached, 0 on success. |
| 713 | */ |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 714 | int dmi_walk(void (*decode)(const struct dmi_header *, void *), |
| 715 | void *private_data) |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 716 | { |
| 717 | u8 *buf; |
| 718 | |
| 719 | if (!dmi_available) |
| 720 | return -1; |
| 721 | |
| 722 | buf = ioremap(dmi_base, dmi_len); |
| 723 | if (buf == NULL) |
| 724 | return -1; |
| 725 | |
Jean Delvare | e7a19c56 | 2009-03-30 21:46:44 +0200 | [diff] [blame] | 726 | dmi_table(buf, dmi_len, dmi_num, decode, private_data); |
Jean Delvare | 7fce084 | 2007-11-03 17:29:20 +0100 | [diff] [blame] | 727 | |
| 728 | iounmap(buf); |
| 729 | return 0; |
| 730 | } |
| 731 | EXPORT_SYMBOL_GPL(dmi_walk); |
Jiri Slaby | d61c72e | 2008-12-10 14:07:21 +0100 | [diff] [blame] | 732 | |
| 733 | /** |
| 734 | * dmi_match - compare a string to the dmi field (if exists) |
Randy Dunlap | c2bacfc | 2009-01-06 14:41:40 -0800 | [diff] [blame] | 735 | * @f: DMI field identifier |
| 736 | * @str: string to compare the DMI field to |
Jiri Slaby | d61c72e | 2008-12-10 14:07:21 +0100 | [diff] [blame] | 737 | * |
| 738 | * Returns true if the requested field equals to the str (including NULL). |
| 739 | */ |
| 740 | bool dmi_match(enum dmi_field f, const char *str) |
| 741 | { |
| 742 | const char *info = dmi_get_system_info(f); |
| 743 | |
| 744 | if (info == NULL || str == NULL) |
| 745 | return info == str; |
| 746 | |
| 747 | return !strcmp(info, str); |
| 748 | } |
| 749 | EXPORT_SYMBOL_GPL(dmi_match); |