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| Rev | Author | Line No. | Line |
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| 6595 | serge | 1 | /* |
| 2 | * acpi_bus.c - ACPI Bus Driver ($Revision: 80 $) |
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| 3 | * |
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| 4 | * Copyright (C) 2001, 2002 Paul Diefenbaugh |
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| 5 | * |
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| 6 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 7 | * |
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| 8 | * This program is free software; you can redistribute it and/or modify |
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| 9 | * it under the terms of the GNU General Public License as published by |
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| 10 | * the Free Software Foundation; either version 2 of the License, or (at |
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| 11 | * your option) any later version. |
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| 12 | * |
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| 13 | * This program is distributed in the hope that it will be useful, but |
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| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * General Public License for more details. |
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| 17 | * |
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| 18 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 19 | */ |
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| 20 | |||
| 21 | #include |
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| 22 | #include |
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| 23 | #include |
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| 24 | #include |
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| 25 | #include |
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| 26 | #include |
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| 27 | #include |
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| 28 | #include |
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| 29 | |||
| 30 | #include "internal.h" |
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| 31 | struct acpi_device *acpi_root; |
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| 32 | #ifdef CONFIG_X86 |
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| 33 | #ifdef CONFIG_ACPI_CUSTOM_DSDT |
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| 34 | static inline int set_copy_dsdt(const struct dmi_system_id *id) |
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| 35 | { |
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| 36 | return 0; |
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| 37 | } |
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| 38 | #else |
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| 39 | static int set_copy_dsdt(const struct dmi_system_id *id) |
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| 40 | { |
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| 41 | printk(KERN_NOTICE "%s detected - " |
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| 42 | "force copy of DSDT to local memory\n", id->ident); |
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| 43 | acpi_gbl_copy_dsdt_locally = 1; |
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| 44 | return 0; |
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| 45 | } |
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| 46 | #endif |
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| 47 | |||
| 48 | static struct dmi_system_id dsdt_dmi_table[] __initdata = { |
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| 49 | /* |
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| 50 | * Invoke DSDT corruption work-around on all Toshiba Satellite. |
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| 51 | * https://bugzilla.kernel.org/show_bug.cgi?id=14679 |
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| 52 | */ |
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| 53 | { |
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| 54 | .callback = set_copy_dsdt, |
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| 55 | .ident = "TOSHIBA Satellite", |
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| 56 | .matches = { |
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| 57 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), |
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| 58 | DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), |
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| 59 | }, |
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| 60 | }, |
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| 61 | {} |
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| 62 | }; |
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| 63 | #else |
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| 64 | static struct dmi_system_id dsdt_dmi_table[] __initdata = { |
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| 65 | {} |
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| 66 | }; |
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| 67 | #endif |
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| 68 | /** |
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| 69 | * acpi_early_init - Initialize ACPICA and populate the ACPI namespace. |
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| 70 | * |
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| 71 | * The ACPI tables are accessible after this, but the handling of events has not |
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| 72 | * been initialized and the global lock is not available yet, so AML should not |
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| 73 | * be executed at this point. |
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| 74 | * |
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| 75 | * Doing this before switching the EFI runtime services to virtual mode allows |
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| 76 | * the EfiBootServices memory to be freed slightly earlier on boot. |
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| 77 | */ |
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| 78 | void __init acpi_early_init(void) |
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| 79 | { |
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| 80 | acpi_status status; |
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| 81 | |||
| 82 | if (acpi_disabled) |
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| 83 | return; |
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| 84 | |||
| 85 | printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION); |
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| 86 | |||
| 87 | /* It's safe to verify table checksums during late stage */ |
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| 88 | acpi_gbl_verify_table_checksum = TRUE; |
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| 89 | |||
| 90 | /* enable workarounds, unless strict ACPI spec. compliance */ |
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| 91 | if (!acpi_strict) |
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| 92 | acpi_gbl_enable_interpreter_slack = TRUE; |
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| 93 | |||
| 94 | acpi_gbl_permanent_mmap = 1; |
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| 95 | |||
| 96 | /* |
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| 97 | * If the machine falls into the DMI check table, |
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| 98 | * DSDT will be copied to memory |
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| 99 | */ |
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| 100 | dmi_check_system(dsdt_dmi_table); |
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| 101 | |||
| 102 | status = acpi_reallocate_root_table(); |
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| 103 | if (ACPI_FAILURE(status)) { |
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| 104 | printk(KERN_ERR PREFIX |
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| 105 | "Unable to reallocate ACPI tables\n"); |
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| 106 | goto error0; |
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| 107 | } |
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| 108 | |||
| 109 | status = acpi_initialize_subsystem(); |
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| 110 | if (ACPI_FAILURE(status)) { |
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| 111 | printk(KERN_ERR PREFIX |
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| 112 | "Unable to initialize the ACPI Interpreter\n"); |
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| 113 | goto error0; |
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| 114 | } |
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| 115 | |||
| 116 | status = acpi_load_tables(); |
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| 117 | if (ACPI_FAILURE(status)) { |
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| 118 | printk(KERN_ERR PREFIX |
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| 119 | "Unable to load the System Description Tables\n"); |
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| 120 | goto error0; |
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| 121 | } |
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| 122 | |||
| 123 | #ifdef CONFIG_X86 |
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| 124 | if (!acpi_ioapic) { |
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| 125 | /* compatible (0) means level (3) */ |
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| 126 | if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) { |
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| 127 | acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK; |
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| 128 | acpi_sci_flags |= ACPI_MADT_TRIGGER_LEVEL; |
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| 129 | } |
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| 130 | /* Set PIC-mode SCI trigger type */ |
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| 131 | acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt, |
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| 132 | (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2); |
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| 133 | } else { |
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| 134 | /* |
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| 135 | * now that acpi_gbl_FADT is initialized, |
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| 136 | * update it with result from INT_SRC_OVR parsing |
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| 137 | */ |
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| 138 | acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi; |
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| 139 | } |
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| 140 | #endif |
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| 141 | return; |
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| 142 | |||
| 143 | error0: |
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| 144 | disable_acpi(); |
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| 145 | } |