1 /* 2 * blacklist.c 3 * 4 * Check to see if the given machine has a known bad ACPI BIOS 5 * or if the BIOS is too old. 6 * Check given machine against acpi_osi_dmi_table[]. 7 * 8 * Copyright (C) 2004 Len Brown <len.brown@intel.com> 9 * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com> 10 * 11 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License as published by 15 * the Free Software Foundation; either version 2 of the License, or (at 16 * your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, but 19 * WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21 * General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License along 24 * with this program; if not, write to the Free Software Foundation, Inc., 25 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. 26 * 27 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 28 */ 29 30 #include <linux/kernel.h> 31 #include <linux/init.h> 32 #include <linux/acpi.h> 33 #include <acpi/acpi_bus.h> 34 #include <linux/dmi.h> 35 36 #include "internal.h" 37 38 enum acpi_blacklist_predicates { 39 all_versions, 40 less_than_or_equal, 41 equal, 42 greater_than_or_equal, 43 }; 44 45 struct acpi_blacklist_item { 46 char oem_id[7]; 47 char oem_table_id[9]; 48 u32 oem_revision; 49 char *table; 50 enum acpi_blacklist_predicates oem_revision_predicate; 51 char *reason; 52 u32 is_critical_error; 53 }; 54 55 static struct dmi_system_id acpi_osi_dmi_table[] __initdata; 56 57 /* 58 * POLICY: If *anything* doesn't work, put it on the blacklist. 59 * If they are critical errors, mark it critical, and abort driver load. 60 */ 61 static struct acpi_blacklist_item acpi_blacklist[] __initdata = { 62 /* Compaq Presario 1700 */ 63 {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal, 64 "Multiple problems", 1}, 65 /* Sony FX120, FX140, FX150? */ 66 {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal, 67 "ACPI driver problem", 1}, 68 /* Compaq Presario 800, Insyde BIOS */ 69 {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal, 70 "Does not use _REG to protect EC OpRegions", 1}, 71 /* IBM 600E - _ADR should return 7, but it returns 1 */ 72 {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal, 73 "Incorrect _ADR", 1}, 74 75 {""} 76 }; 77 78 #if CONFIG_ACPI_BLACKLIST_YEAR 79 80 static int __init blacklist_by_year(void) 81 { 82 int year; 83 84 /* Doesn't exist? Likely an old system */ 85 if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) { 86 printk(KERN_ERR PREFIX "no DMI BIOS year, " 87 "acpi=force is required to enable ACPI\n" ); 88 return 1; 89 } 90 /* 0? Likely a buggy new BIOS */ 91 if (year == 0) { 92 printk(KERN_ERR PREFIX "DMI BIOS year==0, " 93 "assuming ACPI-capable machine\n" ); 94 return 0; 95 } 96 if (year < CONFIG_ACPI_BLACKLIST_YEAR) { 97 printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), " 98 "acpi=force is required to enable ACPI\n", 99 year, CONFIG_ACPI_BLACKLIST_YEAR); 100 return 1; 101 } 102 return 0; 103 } 104 #else 105 static inline int blacklist_by_year(void) 106 { 107 return 0; 108 } 109 #endif 110 111 int __init acpi_blacklisted(void) 112 { 113 int i = 0; 114 int blacklisted = 0; 115 struct acpi_table_header table_header; 116 117 while (acpi_blacklist[i].oem_id[0] != '\0') { 118 if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) { 119 i++; 120 continue; 121 } 122 123 if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) { 124 i++; 125 continue; 126 } 127 128 if (strncmp 129 (acpi_blacklist[i].oem_table_id, table_header.oem_table_id, 130 8)) { 131 i++; 132 continue; 133 } 134 135 if ((acpi_blacklist[i].oem_revision_predicate == all_versions) 136 || (acpi_blacklist[i].oem_revision_predicate == 137 less_than_or_equal 138 && table_header.oem_revision <= 139 acpi_blacklist[i].oem_revision) 140 || (acpi_blacklist[i].oem_revision_predicate == 141 greater_than_or_equal 142 && table_header.oem_revision >= 143 acpi_blacklist[i].oem_revision) 144 || (acpi_blacklist[i].oem_revision_predicate == equal 145 && table_header.oem_revision == 146 acpi_blacklist[i].oem_revision)) { 147 148 printk(KERN_ERR PREFIX 149 "Vendor \"%6.6s\" System \"%8.8s\" " 150 "Revision 0x%x has a known ACPI BIOS problem.\n", 151 acpi_blacklist[i].oem_id, 152 acpi_blacklist[i].oem_table_id, 153 acpi_blacklist[i].oem_revision); 154 155 printk(KERN_ERR PREFIX 156 "Reason: %s. This is a %s error\n", 157 acpi_blacklist[i].reason, 158 (acpi_blacklist[i]. 159 is_critical_error ? "non-recoverable" : 160 "recoverable")); 161 162 blacklisted = acpi_blacklist[i].is_critical_error; 163 break; 164 } else { 165 i++; 166 } 167 } 168 169 blacklisted += blacklist_by_year(); 170 171 dmi_check_system(acpi_osi_dmi_table); 172 173 return blacklisted; 174 } 175 #ifdef CONFIG_DMI 176 static int __init dmi_enable_osi_linux(const struct dmi_system_id *d) 177 { 178 acpi_dmi_osi_linux(1, d); /* enable */ 179 return 0; 180 } 181 static int __init dmi_disable_osi_vista(const struct dmi_system_id *d) 182 { 183 printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); 184 acpi_osi_setup("!Windows 2006"); 185 acpi_osi_setup("!Windows 2006 SP1"); 186 acpi_osi_setup("!Windows 2006 SP2"); 187 return 0; 188 } 189 static int __init dmi_disable_osi_win7(const struct dmi_system_id *d) 190 { 191 printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); 192 acpi_osi_setup("!Windows 2009"); 193 return 0; 194 } 195 196 static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { 197 { 198 .callback = dmi_disable_osi_vista, 199 .ident = "Fujitsu Siemens", 200 .matches = { 201 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 202 DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"), 203 }, 204 }, 205 { 206 /* 207 * There have a NVIF method in MSI GX723 DSDT need call by Nvidia 208 * driver (e.g. nouveau) when user press brightness hotkey. 209 * Currently, nouveau driver didn't do the job and it causes there 210 * have a infinite while loop in DSDT when user press hotkey. 211 * We add MSI GX723's dmi information to this table for workaround 212 * this issue. 213 * Will remove MSI GX723 from the table after nouveau grows support. 214 */ 215 .callback = dmi_disable_osi_vista, 216 .ident = "MSI GX723", 217 .matches = { 218 DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"), 219 DMI_MATCH(DMI_PRODUCT_NAME, "GX723"), 220 }, 221 }, 222 { 223 .callback = dmi_disable_osi_vista, 224 .ident = "Sony VGN-NS10J_S", 225 .matches = { 226 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), 227 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"), 228 }, 229 }, 230 { 231 .callback = dmi_disable_osi_vista, 232 .ident = "Sony VGN-SR290J", 233 .matches = { 234 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), 235 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"), 236 }, 237 }, 238 { 239 .callback = dmi_disable_osi_vista, 240 .ident = "VGN-NS50B_L", 241 .matches = { 242 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), 243 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"), 244 }, 245 }, 246 { 247 .callback = dmi_disable_osi_vista, 248 .ident = "Toshiba Satellite L355", 249 .matches = { 250 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 251 DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"), 252 }, 253 }, 254 { 255 .callback = dmi_disable_osi_win7, 256 .ident = "ASUS K50IJ", 257 .matches = { 258 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), 259 DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"), 260 }, 261 }, 262 { 263 .callback = dmi_disable_osi_vista, 264 .ident = "Toshiba P305D", 265 .matches = { 266 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 267 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"), 268 }, 269 }, 270 271 /* 272 * BIOS invocation of _OSI(Linux) is almost always a BIOS bug. 273 * Linux ignores it, except for the machines enumerated below. 274 */ 275 276 /* 277 * Lenovo has a mix of systems OSI(Linux) situations 278 * and thus we can not wildcard the vendor. 279 * 280 * _OSI(Linux) helps sound 281 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"), 282 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"), 283 * T400, T500 284 * _OSI(Linux) has Linux specific hooks 285 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"), 286 * _OSI(Linux) is a NOP: 287 * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"), 288 * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"), 289 */ 290 { 291 .callback = dmi_enable_osi_linux, 292 .ident = "Lenovo ThinkPad R61", 293 .matches = { 294 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 295 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"), 296 }, 297 }, 298 { 299 .callback = dmi_enable_osi_linux, 300 .ident = "Lenovo ThinkPad T61", 301 .matches = { 302 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 303 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"), 304 }, 305 }, 306 { 307 .callback = dmi_enable_osi_linux, 308 .ident = "Lenovo ThinkPad X61", 309 .matches = { 310 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 311 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"), 312 }, 313 }, 314 { 315 .callback = dmi_enable_osi_linux, 316 .ident = "Lenovo ThinkPad T400", 317 .matches = { 318 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 319 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"), 320 }, 321 }, 322 { 323 .callback = dmi_enable_osi_linux, 324 .ident = "Lenovo ThinkPad T500", 325 .matches = { 326 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 327 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"), 328 }, 329 }, 330 {} 331 }; 332 333 #endif /* CONFIG_DMI */ 334