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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 | /* * blacklist.c * * Check to see if the given machine has a known bad ACPI BIOS * or if the BIOS is too old. * * Copyright (C) 2004 Len Brown <len.brown@intel.com> * Copyright (C) 2002 Andy Grover <andrew.grover@intel.com> * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or (at * your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/acpi.h> #include <acpi/acpi_bus.h> #include <linux/dmi.h> enum acpi_blacklist_predicates { all_versions, less_than_or_equal, equal, greater_than_or_equal, }; struct acpi_blacklist_item { char oem_id[7]; char oem_table_id[9]; u32 oem_revision; acpi_table_type table; enum acpi_blacklist_predicates oem_revision_predicate; char *reason; u32 is_critical_error; }; /* * POLICY: If *anything* doesn't work, put it on the blacklist. * If they are critical errors, mark it critical, and abort driver load. */ static struct acpi_blacklist_item acpi_blacklist[] __initdata = { /* Compaq Presario 1700 */ {"PTLTD ", " DSDT ", 0x06040000, ACPI_DSDT, less_than_or_equal, "Multiple problems", 1}, /* Sony FX120, FX140, FX150? */ {"SONY ", "U0 ", 0x20010313, ACPI_DSDT, less_than_or_equal, "ACPI driver problem", 1}, /* Compaq Presario 800, Insyde BIOS */ {"INT440", "SYSFexxx", 0x00001001, ACPI_DSDT, less_than_or_equal, "Does not use _REG to protect EC OpRegions", 1}, /* IBM 600E - _ADR should return 7, but it returns 1 */ {"IBM ", "TP600E ", 0x00000105, ACPI_DSDT, less_than_or_equal, "Incorrect _ADR", 1}, {"ASUS\0\0", "P2B-S ", 0, ACPI_DSDT, all_versions, "Bogus PCI routing", 1}, {""} }; #if CONFIG_ACPI_BLACKLIST_YEAR static int __init blacklist_by_year(void) { int year; char *s = dmi_get_system_info(DMI_BIOS_DATE); if (!s) return 0; if (!*s) return 0; s = strrchr(s, '/'); if (!s) return 0; s += 1; year = simple_strtoul(s,NULL,0); if (year < 100) { /* 2-digit year */ year += 1900; if (year < 1996) /* no dates < spec 1.0 */ year += 100; } if (year < CONFIG_ACPI_BLACKLIST_YEAR) { printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), " "acpi=force is required to enable ACPI\n", year, CONFIG_ACPI_BLACKLIST_YEAR); return 1; } return 0; } #else static inline int blacklist_by_year(void) { return 0; } #endif int __init acpi_blacklisted(void) { int i = 0; int blacklisted = 0; struct acpi_table_header *table_header; while (acpi_blacklist[i].oem_id[0] != '\0') { if (acpi_get_table_header_early(acpi_blacklist[i].table, &table_header)) { i++; continue; } if (strncmp(acpi_blacklist[i].oem_id, table_header->oem_id, 6)) { i++; continue; } if (strncmp(acpi_blacklist[i].oem_table_id, table_header->oem_table_id, 8)) { i++; continue; } if ((acpi_blacklist[i].oem_revision_predicate == all_versions) || (acpi_blacklist[i].oem_revision_predicate == less_than_or_equal && table_header->oem_revision <= acpi_blacklist[i].oem_revision) || (acpi_blacklist[i].oem_revision_predicate == greater_than_or_equal && table_header->oem_revision >= acpi_blacklist[i].oem_revision) || (acpi_blacklist[i].oem_revision_predicate == equal && table_header->oem_revision == acpi_blacklist[i].oem_revision)) { printk(KERN_ERR PREFIX "Vendor \"%6.6s\" System \"%8.8s\" " "Revision 0x%x has a known ACPI BIOS problem.\n", acpi_blacklist[i].oem_id, acpi_blacklist[i].oem_table_id, acpi_blacklist[i].oem_revision); printk(KERN_ERR PREFIX "Reason: %s. This is a %s error\n", acpi_blacklist[i].reason, (acpi_blacklist[i].is_critical_error ? "non-recoverable" : "recoverable")); blacklisted = acpi_blacklist[i].is_critical_error; break; } else { i++; } } blacklisted += blacklist_by_year(); return blacklisted; } |