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/module.h> 32#include <linux/init.h> 33#include <linux/acpi.h> 34#include <acpi/acpi_bus.h> 35#include <linux/dmi.h> 36 37#include "internal.h" 38 39enum acpi_blacklist_predicates { 40 all_versions, 41 less_than_or_equal, 42 equal, 43 greater_than_or_equal, 44}; 45 46struct acpi_blacklist_item { 47 char oem_id[7]; 48 char oem_table_id[9]; 49 u32 oem_revision; 50 char *table; 51 enum acpi_blacklist_predicates oem_revision_predicate; 52 char *reason; 53 u32 is_critical_error; 54}; 55 56static struct dmi_system_id acpi_osi_dmi_table[] __initdata; 57 58/* 59 * POLICY: If *anything* doesn't work, put it on the blacklist. 60 * If they are critical errors, mark it critical, and abort driver load. 61 */ 62static struct acpi_blacklist_item acpi_blacklist[] __initdata = { 63 /* Compaq Presario 1700 */ 64 {"PTLTD ", " DSDT ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal, 65 "Multiple problems", 1}, 66 /* Sony FX120, FX140, FX150? */ 67 {"SONY ", "U0 ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal, 68 "ACPI driver problem", 1}, 69 /* Compaq Presario 800, Insyde BIOS */ 70 {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal, 71 "Does not use _REG to protect EC OpRegions", 1}, 72 /* IBM 600E - _ADR should return 7, but it returns 1 */ 73 {"IBM ", "TP600E ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal, 74 "Incorrect _ADR", 1}, 75 76 {""} 77}; 78 79#if CONFIG_ACPI_BLACKLIST_YEAR 80 81static int __init blacklist_by_year(void) 82{ 83 int year; 84 85 /* Doesn't exist? Likely an old system */ 86 if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) { 87 printk(KERN_ERR PREFIX "no DMI BIOS year, " 88 "acpi=force is required to enable ACPI\n" ); 89 return 1; 90 } 91 /* 0? Likely a buggy new BIOS */ 92 if (year == 0) { 93 printk(KERN_ERR PREFIX "DMI BIOS year==0, " 94 "assuming ACPI-capable machine\n" ); 95 return 0; 96 } 97 if (year < CONFIG_ACPI_BLACKLIST_YEAR) { 98 printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), " 99 "acpi=force is required to enable ACPI\n", 100 year, CONFIG_ACPI_BLACKLIST_YEAR); 101 return 1; 102 } 103 return 0; 104} 105#else 106static inline int blacklist_by_year(void) 107{ 108 return 0; 109} 110#endif 111 112int __init acpi_blacklisted(void) 113{ 114 int i = 0; 115 int blacklisted = 0; 116 struct acpi_table_header table_header; 117 118 while (acpi_blacklist[i].oem_id[0] != '\0') { 119 if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) { 120 i++; 121 continue; 122 } 123 124 if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) { 125 i++; 126 continue; 127 } 128 129 if (strncmp 130 (acpi_blacklist[i].oem_table_id, table_header.oem_table_id, 131 8)) { 132 i++; 133 continue; 134 } 135 136 if ((acpi_blacklist[i].oem_revision_predicate == all_versions) 137 || (acpi_blacklist[i].oem_revision_predicate == 138 less_than_or_equal 139 && table_header.oem_revision <= 140 acpi_blacklist[i].oem_revision) 141 || (acpi_blacklist[i].oem_revision_predicate == 142 greater_than_or_equal 143 && table_header.oem_revision >= 144 acpi_blacklist[i].oem_revision) 145 || (acpi_blacklist[i].oem_revision_predicate == equal 146 && table_header.oem_revision == 147 acpi_blacklist[i].oem_revision)) { 148 149 printk(KERN_ERR PREFIX 150 "Vendor \"%6.6s\" System \"%8.8s\" " 151 "Revision 0x%x has a known ACPI BIOS problem.\n", 152 acpi_blacklist[i].oem_id, 153 acpi_blacklist[i].oem_table_id, 154 acpi_blacklist[i].oem_revision); 155 156 printk(KERN_ERR PREFIX 157 "Reason: %s. This is a %s error\n", 158 acpi_blacklist[i].reason, 159 (acpi_blacklist[i]. 160 is_critical_error ? "non-recoverable" : 161 "recoverable")); 162 163 blacklisted = acpi_blacklist[i].is_critical_error; 164 break; 165 } else { 166 i++; 167 } 168 } 169 170 blacklisted += blacklist_by_year(); 171 172 dmi_check_system(acpi_osi_dmi_table); 173 174 return blacklisted; 175} 176#ifdef CONFIG_DMI 177static int __init dmi_enable_osi_linux(const struct dmi_system_id *d) 178{ 179 acpi_dmi_osi_linux(1, d); /* enable */ 180 return 0; 181} 182static int __init dmi_disable_osi_vista(const struct dmi_system_id *d) 183{ 184 printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); 185 acpi_osi_setup("!Windows 2006"); 186 acpi_osi_setup("!Windows 2006 SP1"); 187 acpi_osi_setup("!Windows 2006 SP2"); 188 return 0; 189} 190static int __init dmi_disable_osi_win7(const struct dmi_system_id *d) 191{ 192 printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); 193 acpi_osi_setup("!Windows 2009"); 194 return 0; 195} 196 197static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { 198 { 199 .callback = dmi_disable_osi_vista, 200 .ident = "Fujitsu Siemens", 201 .matches = { 202 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 203 DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"), 204 }, 205 }, 206 { 207 .callback = dmi_disable_osi_vista, 208 .ident = "MSI GX723", 209 .matches = { 210 DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"), 211 DMI_MATCH(DMI_PRODUCT_NAME, "GX723"), 212 }, 213 }, 214 { 215 .callback = dmi_disable_osi_vista, 216 .ident = "Sony VGN-NS10J_S", 217 .matches = { 218 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), 219 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"), 220 }, 221 }, 222 { 223 .callback = dmi_disable_osi_vista, 224 .ident = "Sony VGN-SR290J", 225 .matches = { 226 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), 227 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"), 228 }, 229 }, 230 { 231 .callback = dmi_disable_osi_vista, 232 .ident = "VGN-NS50B_L", 233 .matches = { 234 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), 235 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"), 236 }, 237 }, 238 { 239 .callback = dmi_disable_osi_vista, 240 .ident = "Toshiba Satellite L355", 241 .matches = { 242 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 243 DMI_MATCH(DMI_PRODUCT_VERSION, "Satellite L355"), 244 }, 245 }, 246 { 247 .callback = dmi_disable_osi_win7, 248 .ident = "ASUS K50IJ", 249 .matches = { 250 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), 251 DMI_MATCH(DMI_PRODUCT_NAME, "K50IJ"), 252 }, 253 }, 254 { 255 .callback = dmi_disable_osi_vista, 256 .ident = "Toshiba P305D", 257 .matches = { 258 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 259 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P305D"), 260 }, 261 }, 262 263 /* 264 * BIOS invocation of _OSI(Linux) is almost always a BIOS bug. 265 * Linux ignores it, except for the machines enumerated below. 266 */ 267 268 /* 269 * Lenovo has a mix of systems OSI(Linux) situations 270 * and thus we can not wildcard the vendor. 271 * 272 * _OSI(Linux) helps sound 273 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"), 274 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"), 275 * T400, T500 276 * _OSI(Linux) has Linux specific hooks 277 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"), 278 * _OSI(Linux) is a NOP: 279 * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"), 280 * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"), 281 */ 282 { 283 .callback = dmi_enable_osi_linux, 284 .ident = "Lenovo ThinkPad R61", 285 .matches = { 286 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 287 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"), 288 }, 289 }, 290 { 291 .callback = dmi_enable_osi_linux, 292 .ident = "Lenovo ThinkPad T61", 293 .matches = { 294 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 295 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"), 296 }, 297 }, 298 { 299 .callback = dmi_enable_osi_linux, 300 .ident = "Lenovo ThinkPad X61", 301 .matches = { 302 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 303 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"), 304 }, 305 }, 306 { 307 .callback = dmi_enable_osi_linux, 308 .ident = "Lenovo ThinkPad T400", 309 .matches = { 310 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 311 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"), 312 }, 313 }, 314 { 315 .callback = dmi_enable_osi_linux, 316 .ident = "Lenovo ThinkPad T500", 317 .matches = { 318 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 319 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"), 320 }, 321 }, 322 {} 323}; 324 325#endif /* CONFIG_DMI */ 326