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5096 | serge | 1 | |
2 | #include |
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3 | #include |
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4 | #include |
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5 | #include |
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6 | #include |
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7 | #include |
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8 | |||
9 | |||
10 | #define pr_info printf |
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11 | |||
12 | |||
13 | { |
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14 | return malloc(len); |
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15 | }; |
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16 | |||
17 | |||
18 | * DMI stands for "Desktop Management Interface". It is part |
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19 | * of and an antecedent to, SMBIOS, which stands for System |
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20 | * Management BIOS. See further: http://www.dmtf.org/standards |
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21 | */ |
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22 | static const char dmi_empty_string[] = " "; |
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23 | |||
24 | |||
25 | /* |
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26 | * Catch too early calls to dmi_check_system(): |
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27 | */ |
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28 | static int dmi_initialized; |
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29 | |||
30 | |||
31 | static char dmi_ids_string[128]; |
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32 | |||
33 | |||
34 | const char *device; |
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35 | const char *bank; |
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36 | u16 handle; |
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37 | } *dmi_memdev; |
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38 | static int dmi_memdev_nr; |
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39 | |||
40 | |||
41 | { |
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42 | const u8 *bp = ((u8 *) dm) + dm->length; |
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43 | |||
44 | |||
45 | s--; |
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46 | while (s > 0 && *bp) { |
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47 | bp += strlen(bp) + 1; |
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48 | s--; |
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49 | } |
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50 | |||
51 | |||
52 | size_t len = strlen(bp)+1; |
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53 | size_t cmp_len = len > 8 ? 8 : len; |
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54 | |||
55 | |||
56 | return dmi_empty_string; |
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57 | return bp; |
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58 | } |
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59 | } |
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60 | |||
61 | |||
62 | } |
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63 | |||
64 | |||
65 | { |
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66 | const char *bp = dmi_string_nosave(dm, s); |
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67 | char *str; |
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68 | size_t len; |
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69 | |||
70 | |||
71 | return dmi_empty_string; |
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72 | |||
73 | |||
74 | str = dmi_alloc(len); |
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75 | if (str != NULL) |
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76 | strcpy(str, bp); |
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77 | |||
78 | |||
79 | } |
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80 | |||
81 | |||
82 | * We have to be cautious here. We have seen BIOSes with DMI pointers |
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83 | * pointing to completely the wrong place for example |
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84 | */ |
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85 | static void dmi_table(u8 *buf, int len, int num, |
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86 | void (*decode)(const struct dmi_header *, void *), |
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87 | void *private_data) |
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88 | { |
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89 | u8 *data = buf; |
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90 | int i = 0; |
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91 | |||
92 | |||
93 | * Stop when we see all the items the table claimed to have |
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94 | * OR we run off the end of the table (also happens) |
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95 | */ |
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96 | while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) { |
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97 | const struct dmi_header *dm = (const struct dmi_header *)data; |
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98 | |||
99 | |||
100 | * We want to know the total length (formatted area and |
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101 | * strings) before decoding to make sure we won't run off the |
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102 | * table in dmi_decode or dmi_string |
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103 | */ |
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104 | data += dm->length; |
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105 | while ((data - buf < len - 1) && (data[0] || data[1])) |
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106 | data++; |
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107 | if (data - buf < len - 1) |
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108 | decode(dm, private_data); |
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109 | data += 2; |
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110 | i++; |
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111 | } |
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112 | } |
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113 | |||
114 | |||
115 | static u16 dmi_len; |
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116 | static u16 dmi_num; |
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117 | |||
118 | |||
119 | void *)) |
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120 | { |
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121 | u8 *buf; |
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122 | |||
123 | |||
124 | if (buf == NULL) |
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125 | return -1; |
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126 | |||
127 | |||
128 | |||
129 | |||
130 | |||
131 | |||
132 | } |
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133 | |||
134 | |||
135 | { |
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136 | u8 sum = 0; |
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137 | int a; |
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138 | |||
139 | |||
140 | sum += buf[a]; |
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141 | |||
142 | |||
143 | } |
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144 | |||
145 | |||
146 | static LIST_HEAD(dmi_devices); |
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147 | int dmi_available; |
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148 | |||
149 | |||
150 | * Save a DMI string |
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151 | */ |
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152 | static void __init dmi_save_ident(const struct dmi_header *dm, int slot, |
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153 | int string) |
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154 | { |
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155 | const char *d = (const char *) dm; |
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156 | const char *p; |
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157 | |||
158 | |||
159 | return; |
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160 | |||
161 | |||
162 | if (p == NULL) |
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163 | return; |
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164 | |||
165 | |||
166 | } |
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167 | |||
168 | |||
169 | int index) |
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170 | { |
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171 | const u8 *d = (u8 *) dm + index; |
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172 | char *s; |
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173 | int is_ff = 1, is_00 = 1, i; |
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174 | |||
175 | |||
176 | return; |
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177 | |||
178 | |||
179 | if (d[i] != 0x00) |
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180 | is_00 = 0; |
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181 | if (d[i] != 0xFF) |
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182 | is_ff = 0; |
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183 | } |
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184 | |||
185 | |||
186 | return; |
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187 | |||
188 | |||
189 | if (!s) |
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190 | return; |
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191 | |||
192 | |||
193 | * As of version 2.6 of the SMBIOS specification, the first 3 fields of |
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194 | * the UUID are supposed to be little-endian encoded. The specification |
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195 | * says that this is the defacto standard. |
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196 | */ |
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197 | if (dmi_ver >= 0x0206) |
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198 | sprintf(s, "%pUL", d); |
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199 | else |
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200 | sprintf(s, "%pUB", d); |
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201 | |||
202 | |||
203 | } |
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204 | |||
205 | |||
206 | int index) |
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207 | { |
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208 | const u8 *d = (u8 *) dm + index; |
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209 | char *s; |
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210 | |||
211 | |||
212 | return; |
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213 | |||
214 | |||
215 | if (!s) |
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216 | return; |
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217 | |||
218 | |||
219 | dmi_ident[slot] = s; |
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220 | } |
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221 | |||
222 | |||
223 | { |
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224 | struct dmi_device *dev; |
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225 | |||
226 | |||
227 | if (dmi_find_device(type, name, NULL)) |
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228 | return; |
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229 | |||
230 | |||
231 | if (!dev) |
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232 | return; |
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233 | |||
234 | |||
235 | strcpy((char *)(dev + 1), name); |
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236 | dev->name = (char *)(dev + 1); |
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237 | dev->device_data = NULL; |
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238 | list_add(&dev->list, &dmi_devices); |
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239 | } |
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240 | |||
241 | |||
242 | { |
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243 | int i, count = (dm->length - sizeof(struct dmi_header)) / 2; |
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244 | |||
245 | |||
246 | const char *d = (char *)(dm + 1) + (i * 2); |
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247 | |||
248 | |||
249 | if ((*d & 0x80) == 0) |
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250 | continue; |
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251 | |||
252 | |||
253 | } |
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254 | } |
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255 | |||
256 | |||
257 | { |
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258 | int i, count = *(u8 *)(dm + 1); |
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259 | struct dmi_device *dev; |
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260 | |||
261 | |||
262 | const char *devname = dmi_string(dm, i); |
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263 | |||
264 | |||
265 | continue; |
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266 | |||
267 | |||
268 | if (!dev) |
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269 | break; |
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270 | |||
271 | |||
272 | dev->name = devname; |
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273 | dev->device_data = NULL; |
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274 | |||
275 | |||
276 | } |
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277 | } |
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278 | |||
279 | |||
280 | { |
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281 | struct dmi_device *dev; |
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282 | void *data; |
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283 | |||
284 | |||
285 | if (data == NULL) |
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286 | return; |
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287 | |||
288 | |||
289 | |||
290 | |||
291 | if (!dev) |
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292 | return; |
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293 | |||
294 | |||
295 | dev->name = "IPMI controller"; |
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296 | dev->device_data = data; |
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297 | |||
298 | |||
299 | } |
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300 | |||
301 | |||
302 | int devfn, const char *name) |
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303 | { |
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304 | struct dmi_dev_onboard *onboard_dev; |
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305 | |||
306 | |||
307 | if (!onboard_dev) |
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308 | return; |
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309 | |||
310 | |||
311 | onboard_dev->segment = segment; |
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312 | onboard_dev->bus = bus; |
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313 | onboard_dev->devfn = devfn; |
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314 | |||
315 | |||
316 | onboard_dev->dev.type = DMI_DEV_TYPE_DEV_ONBOARD; |
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317 | onboard_dev->dev.name = (char *)&onboard_dev[1]; |
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318 | onboard_dev->dev.device_data = onboard_dev; |
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319 | |||
320 | |||
321 | } |
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322 | |||
323 | |||
324 | { |
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325 | const u8 *d = (u8 *) dm + 5; |
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326 | |||
327 | |||
328 | if ((*d & 0x80) == 0) |
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329 | return; |
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330 | |||
331 | |||
332 | dmi_string_nosave(dm, *(d-1))); |
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333 | dmi_save_one_device(*d & 0x7f, dmi_string_nosave(dm, *(d - 1))); |
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334 | |||
335 | |||
336 | |||
337 | |||
338 | * Process a DMI table entry. Right now all we care about are the BIOS |
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339 | * and machine entries. For 2.5 we should pull the smbus controller info |
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340 | * out of here. |
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341 | */ |
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342 | static void __init dmi_decode(const struct dmi_header *dm, void *dummy) |
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343 | { |
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344 | switch (dm->type) { |
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345 | case 0: /* BIOS Information */ |
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346 | dmi_save_ident(dm, DMI_BIOS_VENDOR, 4); |
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347 | dmi_save_ident(dm, DMI_BIOS_VERSION, 5); |
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348 | dmi_save_ident(dm, DMI_BIOS_DATE, 8); |
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349 | break; |
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350 | case 1: /* System Information */ |
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351 | dmi_save_ident(dm, DMI_SYS_VENDOR, 4); |
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352 | dmi_save_ident(dm, DMI_PRODUCT_NAME, 5); |
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353 | dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6); |
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354 | dmi_save_ident(dm, DMI_PRODUCT_SERIAL, 7); |
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355 | dmi_save_uuid(dm, DMI_PRODUCT_UUID, 8); |
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356 | break; |
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357 | case 2: /* Base Board Information */ |
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358 | dmi_save_ident(dm, DMI_BOARD_VENDOR, 4); |
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359 | dmi_save_ident(dm, DMI_BOARD_NAME, 5); |
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360 | dmi_save_ident(dm, DMI_BOARD_VERSION, 6); |
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361 | dmi_save_ident(dm, DMI_BOARD_SERIAL, 7); |
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362 | dmi_save_ident(dm, DMI_BOARD_ASSET_TAG, 8); |
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363 | break; |
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364 | case 3: /* Chassis Information */ |
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365 | dmi_save_ident(dm, DMI_CHASSIS_VENDOR, 4); |
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366 | dmi_save_type(dm, DMI_CHASSIS_TYPE, 5); |
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367 | dmi_save_ident(dm, DMI_CHASSIS_VERSION, 6); |
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368 | dmi_save_ident(dm, DMI_CHASSIS_SERIAL, 7); |
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369 | dmi_save_ident(dm, DMI_CHASSIS_ASSET_TAG, 8); |
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370 | break; |
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371 | case 10: /* Onboard Devices Information */ |
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372 | dmi_save_devices(dm); |
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373 | break; |
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374 | case 11: /* OEM Strings */ |
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375 | dmi_save_oem_strings_devices(dm); |
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376 | break; |
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377 | case 38: /* IPMI Device Information */ |
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378 | dmi_save_ipmi_device(dm); |
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379 | break; |
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380 | case 41: /* Onboard Devices Extended Information */ |
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381 | dmi_save_extended_devices(dm); |
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382 | } |
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383 | } |
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384 | |||
385 | |||
386 | { |
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387 | int c = 0; |
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388 | const char *p; |
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389 | |||
390 | |||
391 | return c; |
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392 | |||
393 | |||
394 | if (isprint(*p)) |
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395 | c += scnprintf(buf + c, len - c, "%c", *p); |
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396 | else |
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397 | c += scnprintf(buf + c, len - c, "\\x%02x", *p & 0xff); |
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398 | return c; |
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399 | } |
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400 | |||
401 | |||
402 | { |
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403 | int c = 0; |
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404 | const char *board; /* Board Name is optional */ |
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405 | |||
406 | |||
407 | dmi_get_system_info(DMI_SYS_VENDOR)); |
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408 | c += scnprintf(buf + c, len - c, " "); |
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409 | c += print_filtered(buf + c, len - c, |
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410 | dmi_get_system_info(DMI_PRODUCT_NAME)); |
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411 | |||
412 | |||
413 | if (board) { |
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414 | c += scnprintf(buf + c, len - c, "/"); |
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415 | c += print_filtered(buf + c, len - c, board); |
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416 | } |
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417 | c += scnprintf(buf + c, len - c, ", BIOS "); |
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418 | c += print_filtered(buf + c, len - c, |
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419 | dmi_get_system_info(DMI_BIOS_VERSION)); |
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420 | c += scnprintf(buf + c, len - c, " "); |
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421 | c += print_filtered(buf + c, len - c, |
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422 | dmi_get_system_info(DMI_BIOS_DATE)); |
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423 | } |
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424 | |||
425 | |||
426 | * Check for DMI/SMBIOS headers in the system firmware image. Any |
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427 | * SMBIOS header must start 16 bytes before the DMI header, so take a |
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428 | * 32 byte buffer and check for DMI at offset 16 and SMBIOS at offset |
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429 | * 0. If the DMI header is present, set dmi_ver accordingly (SMBIOS |
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430 | * takes precedence) and return 0. Otherwise return 1. |
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431 | */ |
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432 | static int __init dmi_present(const u8 *buf) |
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433 | { |
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434 | int smbios_ver; |
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435 | |||
436 | |||
437 | buf[5] < 32 && dmi_checksum(buf, buf[5])) { |
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438 | smbios_ver = (buf[6] << 8) + buf[7]; |
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439 | |||
440 | |||
441 | switch (smbios_ver) { |
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442 | case 0x021F: |
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443 | case 0x0221: |
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444 | pr_debug("SMBIOS version fixup(2.%d->2.%d)\n", |
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445 | smbios_ver & 0xFF, 3); |
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446 | smbios_ver = 0x0203; |
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447 | break; |
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448 | case 0x0233: |
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449 | pr_debug("SMBIOS version fixup(2.%d->2.%d)\n", 51, 6); |
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450 | smbios_ver = 0x0206; |
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451 | break; |
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452 | } |
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453 | } else { |
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454 | smbios_ver = 0; |
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455 | } |
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456 | |||
457 | |||
458 | |||
459 | |||
460 | dmi_num = (buf[13] << 8) | buf[12]; |
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461 | dmi_len = (buf[7] << 8) | buf[6]; |
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462 | dmi_base = (buf[11] << 24) | (buf[10] << 16) | |
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463 | (buf[9] << 8) | buf[8]; |
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464 | |||
465 | |||
466 | if (smbios_ver) { |
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467 | dmi_ver = smbios_ver; |
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468 | pr_info("SMBIOS %d.%d present.\n", |
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469 | dmi_ver >> 8, dmi_ver & 0xFF); |
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470 | } else { |
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471 | dmi_ver = (buf[14] & 0xF0) << 4 | |
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472 | (buf[14] & 0x0F); |
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473 | pr_info("Legacy DMI %d.%d present.\n", |
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474 | dmi_ver >> 8, dmi_ver & 0xFF); |
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475 | } |
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476 | dmi_format_ids(dmi_ids_string, sizeof(dmi_ids_string)); |
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477 | printk(KERN_DEBUG "DMI: %s\n", dmi_ids_string); |
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478 | return 0; |
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479 | } |
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480 | } |
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481 | |||
482 | |||
483 | } |
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484 | |||
485 | |||
486 | { |
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487 | char __iomem *p, *q; |
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488 | char buf[32]; |
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489 | |||
490 | |||
491 | |||
492 | |||
493 | |||
494 | |||
495 | * Iterate over all possible DMI header addresses q. |
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496 | * Maintain the 32 bytes around q in buf. On the |
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497 | * first iteration, substitute zero for the |
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498 | * out-of-range bytes so there is no chance of falsely |
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499 | * detecting an SMBIOS header. |
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500 | */ |
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501 | memset(buf, 0, 16); |
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502 | for (q = p; q < p + 0x10000; q += 16) { |
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503 | memcpy(buf + 16, q, 16); |
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504 | if (!dmi_present(buf)) { |
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505 | dmi_available = 1; |
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506 | goto out; |
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507 | } |
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508 | memcpy(buf, buf + 16, 16); |
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509 | } |
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510 | error: |
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511 | pr_info("DMI not present or invalid.\n"); |
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512 | out: |
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513 | dmi_initialized = 1; |
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514 | } |
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515 | |||
516 | |||
517 | /** |
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518 | * dmi_matches - check if dmi_system_id structure matches system DMI data |
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519 | * @dmi: pointer to the dmi_system_id structure to check |
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520 | */ |
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521 | static bool dmi_matches(const struct dmi_system_id *dmi) |
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522 | { |
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523 | int i; |
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524 | |||
525 | |||
526 | |||
527 | |||
528 | int s = dmi->matches[i].slot; |
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529 | if (s == DMI_NONE) |
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530 | break; |
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531 | if (dmi_ident[s]) { |
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532 | if (!dmi->matches[i].exact_match && |
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533 | strstr(dmi_ident[s], dmi->matches[i].substr)) |
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534 | continue; |
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535 | else if (dmi->matches[i].exact_match && |
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536 | !strcmp(dmi_ident[s], dmi->matches[i].substr)) |
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537 | continue; |
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538 | } |
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539 | |||
540 | |||
541 | return false; |
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542 | } |
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543 | return true; |
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544 | } |
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545 | |||
546 | |||
547 | * dmi_is_end_of_table - check for end-of-table marker |
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548 | * @dmi: pointer to the dmi_system_id structure to check |
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549 | */ |
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550 | static bool dmi_is_end_of_table(const struct dmi_system_id *dmi) |
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551 | { |
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552 | return dmi->matches[0].slot == DMI_NONE; |
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553 | } |
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554 | |||
555 | |||
556 | * dmi_check_system - check system DMI data |
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557 | * @list: array of dmi_system_id structures to match against |
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558 | * All non-null elements of the list must match |
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559 | * their slot's (field index's) data (i.e., each |
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560 | * list string must be a substring of the specified |
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561 | * DMI slot's string data) to be considered a |
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562 | * successful match. |
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563 | * |
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564 | * Walk the blacklist table running matching functions until someone |
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565 | * returns non zero or we hit the end. Callback function is called for |
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566 | * each successful match. Returns the number of matches. |
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567 | */ |
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568 | int dmi_check_system(const struct dmi_system_id *list) |
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569 | { |
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570 | int count = 0; |
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571 | const struct dmi_system_id *d; |
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572 | |||
573 | |||
574 | if (dmi_matches(d)) { |
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575 | count++; |
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576 | if (d->callback && d->callback(d)) |
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577 | break; |
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578 | } |
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579 | |||
580 | |||
581 | } |
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582 | EXPORT_SYMBOL(dmi_check_system); |
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583 | |||
584 | |||
585 | * dmi_get_system_info - return DMI data value |
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586 | * @field: data index (see enum dmi_field) |
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587 | * |
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588 | * Returns one DMI data value, can be used to perform |
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589 | * complex DMI data checks. |
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590 | */ |
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591 | const char *dmi_get_system_info(int field) |
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592 | { |
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593 | return dmi_ident[field]; |
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594 | } |
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595 | EXPORT_SYMBOL(dmi_get_system_info); |
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596 | /** |
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597 | * dmi_find_device - find onboard device by type/name |
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598 | * @type: device type or %DMI_DEV_TYPE_ANY to match all device types |
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599 | * @name: device name string or %NULL to match all |
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600 | * @from: previous device found in search, or %NULL for new search. |
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601 | * |
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602 | * Iterates through the list of known onboard devices. If a device is |
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603 | * found with a matching @vendor and @device, a pointer to its device |
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604 | * structure is returned. Otherwise, %NULL is returned. |
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605 | * A new search is initiated by passing %NULL as the @from argument. |
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606 | * If @from is not %NULL, searches continue from next device. |
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607 | */ |
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608 | const struct dmi_device *dmi_find_device(int type, const char *name, |
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609 | const struct dmi_device *from) |
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610 | { |
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611 | const struct list_head *head = from ? &from->list : &dmi_devices; |
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612 | struct list_head *d; |
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613 | |||
614 | |||
615 | const struct dmi_device *dev = |
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616 | list_entry(d, struct dmi_device, list); |
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617 | |||
618 | |||
619 | ((name == NULL) || (strcmp(dev->name, name) == 0))) |
||
620 | return dev; |
||
621 | } |
||
622 | |||
623 | |||
624 | } |
||
625 | EXPORT_SYMBOL(dmi_find_device);>>><>><>><>><>><>><>><>>=>>>>>>=>> |
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626 |