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| 6595 | serge | 1 | /****************************************************************************** |
| 2 | * |
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| 3 | * Module Name: utxfinit - External interfaces for ACPICA initialization |
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| 4 | * |
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| 5 | *****************************************************************************/ |
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| 6 | |||
| 7 | /* |
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| 8 | * Copyright (C) 2000 - 2015, Intel Corp. |
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| 9 | * All rights reserved. |
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| 10 | * |
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| 11 | * Redistribution and use in source and binary forms, with or without |
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| 12 | * modification, are permitted provided that the following conditions |
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| 13 | * are met: |
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| 14 | * 1. Redistributions of source code must retain the above copyright |
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| 15 | * notice, this list of conditions, and the following disclaimer, |
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| 16 | * without modification. |
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| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
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| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
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| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
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| 20 | * including a substantially similar Disclaimer requirement for further |
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| 21 | * binary redistribution. |
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| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
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| 23 | * of any contributors may be used to endorse or promote products derived |
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| 24 | * from this software without specific prior written permission. |
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| 25 | * |
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| 26 | * Alternatively, this software may be distributed under the terms of the |
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| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
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| 28 | * Software Foundation. |
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| 29 | * |
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| 30 | * NO WARRANTY |
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| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
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| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 41 | * POSSIBILITY OF SUCH DAMAGES. |
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| 42 | */ |
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| 43 | |||
| 44 | #define EXPORT_ACPI_INTERFACES |
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| 45 | |||
| 46 | #include |
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| 47 | #include "accommon.h" |
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| 48 | #include "acevents.h" |
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| 49 | #include "acnamesp.h" |
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| 50 | #include "acdebug.h" |
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| 51 | #include "actables.h" |
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| 52 | |||
| 53 | #define _COMPONENT ACPI_UTILITIES |
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| 54 | ACPI_MODULE_NAME("utxfinit") |
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| 55 | |||
| 56 | /* For acpi_exec only */ |
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| 57 | void ae_do_object_overrides(void); |
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| 58 | |||
| 59 | /******************************************************************************* |
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| 60 | * |
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| 61 | * FUNCTION: acpi_initialize_subsystem |
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| 62 | * |
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| 63 | * PARAMETERS: None |
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| 64 | * |
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| 65 | * RETURN: Status |
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| 66 | * |
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| 67 | * DESCRIPTION: Initializes all global variables. This is the first function |
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| 68 | * called, so any early initialization belongs here. |
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| 69 | * |
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| 70 | ******************************************************************************/ |
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| 71 | |||
| 72 | acpi_status __init acpi_initialize_subsystem(void) |
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| 73 | { |
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| 74 | acpi_status status; |
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| 75 | |||
| 76 | ACPI_FUNCTION_TRACE(acpi_initialize_subsystem); |
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| 77 | |||
| 78 | acpi_gbl_startup_flags = ACPI_SUBSYSTEM_INITIALIZE; |
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| 79 | ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace()); |
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| 80 | |||
| 81 | /* Initialize the OS-Dependent layer */ |
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| 82 | |||
| 83 | status = acpi_os_initialize(); |
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| 84 | if (ACPI_FAILURE(status)) { |
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| 85 | ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization")); |
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| 86 | return_ACPI_STATUS(status); |
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| 87 | } |
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| 88 | |||
| 89 | /* Initialize all globals used by the subsystem */ |
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| 90 | |||
| 91 | status = acpi_ut_init_globals(); |
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| 92 | if (ACPI_FAILURE(status)) { |
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| 93 | ACPI_EXCEPTION((AE_INFO, status, |
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| 94 | "During initialization of globals")); |
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| 95 | return_ACPI_STATUS(status); |
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| 96 | } |
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| 97 | |||
| 98 | /* Create the default mutex objects */ |
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| 99 | |||
| 100 | status = acpi_ut_mutex_initialize(); |
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| 101 | if (ACPI_FAILURE(status)) { |
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| 102 | ACPI_EXCEPTION((AE_INFO, status, |
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| 103 | "During Global Mutex creation")); |
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| 104 | return_ACPI_STATUS(status); |
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| 105 | } |
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| 106 | |||
| 107 | /* |
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| 108 | * Initialize the namespace manager and |
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| 109 | * the root of the namespace tree |
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| 110 | */ |
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| 111 | status = acpi_ns_root_initialize(); |
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| 112 | if (ACPI_FAILURE(status)) { |
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| 113 | ACPI_EXCEPTION((AE_INFO, status, |
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| 114 | "During Namespace initialization")); |
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| 115 | return_ACPI_STATUS(status); |
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| 116 | } |
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| 117 | |||
| 118 | /* Initialize the global OSI interfaces list with the static names */ |
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| 119 | |||
| 120 | status = acpi_ut_initialize_interfaces(); |
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| 121 | if (ACPI_FAILURE(status)) { |
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| 122 | ACPI_EXCEPTION((AE_INFO, status, |
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| 123 | "During OSI interfaces initialization")); |
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| 124 | return_ACPI_STATUS(status); |
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| 125 | } |
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| 126 | |||
| 127 | return_ACPI_STATUS(AE_OK); |
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| 128 | } |
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| 129 | |||
| 130 | ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_subsystem) |
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| 131 | |||
| 132 | /******************************************************************************* |
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| 133 | * |
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| 134 | * FUNCTION: acpi_enable_subsystem |
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| 135 | * |
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| 136 | * PARAMETERS: flags - Init/enable Options |
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| 137 | * |
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| 138 | * RETURN: Status |
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| 139 | * |
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| 140 | * DESCRIPTION: Completes the subsystem initialization including hardware. |
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| 141 | * Puts system into ACPI mode if it isn't already. |
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| 142 | * |
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| 143 | ******************************************************************************/ |
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| 144 | acpi_status __init acpi_enable_subsystem(u32 flags) |
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| 145 | { |
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| 146 | acpi_status status = AE_OK; |
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| 147 | |||
| 148 | ACPI_FUNCTION_TRACE(acpi_enable_subsystem); |
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| 149 | |||
| 150 | #if (!ACPI_REDUCED_HARDWARE) |
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| 151 | |||
| 152 | /* Enable ACPI mode */ |
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| 153 | |||
| 154 | if (!(flags & ACPI_NO_ACPI_ENABLE)) { |
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| 155 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
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| 156 | "[Init] Going into ACPI mode\n")); |
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| 157 | |||
| 158 | acpi_gbl_original_mode = acpi_hw_get_mode(); |
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| 159 | |||
| 160 | status = acpi_enable(); |
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| 161 | if (ACPI_FAILURE(status)) { |
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| 162 | ACPI_WARNING((AE_INFO, "AcpiEnable failed")); |
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| 163 | return_ACPI_STATUS(status); |
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| 164 | } |
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| 165 | } |
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| 166 | |||
| 167 | /* |
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| 168 | * Obtain a permanent mapping for the FACS. This is required for the |
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| 169 | * Global Lock and the Firmware Waking Vector |
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| 170 | */ |
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| 171 | if (!(flags & ACPI_NO_FACS_INIT)) { |
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| 172 | status = acpi_tb_initialize_facs(); |
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| 173 | if (ACPI_FAILURE(status)) { |
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| 174 | ACPI_WARNING((AE_INFO, "Could not map the FACS table")); |
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| 175 | return_ACPI_STATUS(status); |
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| 176 | } |
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| 177 | } |
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| 178 | #endif /* !ACPI_REDUCED_HARDWARE */ |
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| 179 | |||
| 180 | /* |
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| 181 | * Install the default op_region handlers. These are installed unless |
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| 182 | * other handlers have already been installed via the |
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| 183 | * install_address_space_handler interface. |
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| 184 | */ |
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| 185 | if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { |
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| 186 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
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| 187 | "[Init] Installing default address space handlers\n")); |
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| 188 | |||
| 189 | status = acpi_ev_install_region_handlers(); |
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| 190 | if (ACPI_FAILURE(status)) { |
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| 191 | return_ACPI_STATUS(status); |
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| 192 | } |
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| 193 | } |
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| 194 | #if (!ACPI_REDUCED_HARDWARE) |
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| 195 | /* |
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| 196 | * Initialize ACPI Event handling (Fixed and General Purpose) |
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| 197 | * |
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| 198 | * Note1: We must have the hardware and events initialized before we can |
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| 199 | * execute any control methods safely. Any control method can require |
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| 200 | * ACPI hardware support, so the hardware must be fully initialized before |
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| 201 | * any method execution! |
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| 202 | * |
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| 203 | * Note2: Fixed events are initialized and enabled here. GPEs are |
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| 204 | * initialized, but cannot be enabled until after the hardware is |
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| 205 | * completely initialized (SCI and global_lock activated) and the various |
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| 206 | * initialization control methods are run (_REG, _STA, _INI) on the |
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| 207 | * entire namespace. |
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| 208 | */ |
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| 209 | if (!(flags & ACPI_NO_EVENT_INIT)) { |
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| 210 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
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| 211 | "[Init] Initializing ACPI events\n")); |
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| 212 | |||
| 213 | status = acpi_ev_initialize_events(); |
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| 214 | if (ACPI_FAILURE(status)) { |
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| 215 | return_ACPI_STATUS(status); |
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| 216 | } |
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| 217 | } |
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| 218 | |||
| 219 | /* |
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| 220 | * Install the SCI handler and Global Lock handler. This completes the |
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| 221 | * hardware initialization. |
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| 222 | */ |
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| 223 | if (!(flags & ACPI_NO_HANDLER_INIT)) { |
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| 224 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
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| 225 | "[Init] Installing SCI/GL handlers\n")); |
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| 226 | |||
| 227 | status = acpi_ev_install_xrupt_handlers(); |
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| 228 | if (ACPI_FAILURE(status)) { |
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| 229 | return_ACPI_STATUS(status); |
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| 230 | } |
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| 231 | } |
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| 232 | #endif /* !ACPI_REDUCED_HARDWARE */ |
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| 233 | |||
| 234 | return_ACPI_STATUS(status); |
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| 235 | } |
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| 236 | |||
| 237 | ACPI_EXPORT_SYMBOL_INIT(acpi_enable_subsystem) |
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| 238 | |||
| 239 | /******************************************************************************* |
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| 240 | * |
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| 241 | * FUNCTION: acpi_initialize_objects |
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| 242 | * |
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| 243 | * PARAMETERS: flags - Init/enable Options |
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| 244 | * |
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| 245 | * RETURN: Status |
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| 246 | * |
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| 247 | * DESCRIPTION: Completes namespace initialization by initializing device |
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| 248 | * objects and executing AML code for Regions, buffers, etc. |
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| 249 | * |
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| 250 | ******************************************************************************/ |
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| 251 | acpi_status __init acpi_initialize_objects(u32 flags) |
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| 252 | { |
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| 253 | acpi_status status = AE_OK; |
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| 254 | |||
| 255 | ACPI_FUNCTION_TRACE(acpi_initialize_objects); |
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| 256 | |||
| 257 | /* |
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| 258 | * Run all _REG methods |
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| 259 | * |
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| 260 | * Note: Any objects accessed by the _REG methods will be automatically |
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| 261 | * initialized, even if they contain executable AML (see the call to |
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| 262 | * acpi_ns_initialize_objects below). |
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| 263 | */ |
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| 264 | if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { |
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| 265 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
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| 266 | "[Init] Executing _REG OpRegion methods\n")); |
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| 267 | |||
| 268 | status = acpi_ev_initialize_op_regions(); |
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| 269 | if (ACPI_FAILURE(status)) { |
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| 270 | return_ACPI_STATUS(status); |
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| 271 | } |
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| 272 | } |
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| 273 | #ifdef ACPI_EXEC_APP |
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| 274 | /* |
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| 275 | * This call implements the "initialization file" option for acpi_exec. |
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| 276 | * This is the precise point that we want to perform the overrides. |
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| 277 | */ |
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| 278 | ae_do_object_overrides(); |
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| 279 | #endif |
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| 280 | |||
| 281 | /* |
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| 282 | * Execute any module-level code that was detected during the table load |
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| 283 | * phase. Although illegal since ACPI 2.0, there are many machines that |
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| 284 | * contain this type of code. Each block of detected executable AML code |
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| 285 | * outside of any control method is wrapped with a temporary control |
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| 286 | * method object and placed on a global list. The methods on this list |
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| 287 | * are executed below. |
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| 288 | */ |
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| 289 | acpi_ns_exec_module_code_list(); |
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| 290 | |||
| 291 | /* |
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| 292 | * Initialize the objects that remain uninitialized. This runs the |
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| 293 | * executable AML that may be part of the declaration of these objects: |
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| 294 | * operation_regions, buffer_fields, Buffers, and Packages. |
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| 295 | */ |
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| 296 | if (!(flags & ACPI_NO_OBJECT_INIT)) { |
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| 297 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
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| 298 | "[Init] Completing Initialization of ACPI Objects\n")); |
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| 299 | |||
| 300 | status = acpi_ns_initialize_objects(); |
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| 301 | if (ACPI_FAILURE(status)) { |
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| 302 | return_ACPI_STATUS(status); |
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| 303 | } |
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| 304 | } |
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| 305 | |||
| 306 | /* |
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| 307 | * Initialize all device objects in the namespace. This runs the device |
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| 308 | * _STA and _INI methods. |
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| 309 | */ |
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| 310 | if (!(flags & ACPI_NO_DEVICE_INIT)) { |
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| 311 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
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| 312 | "[Init] Initializing ACPI Devices\n")); |
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| 313 | |||
| 314 | status = acpi_ns_initialize_devices(); |
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| 315 | if (ACPI_FAILURE(status)) { |
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| 316 | return_ACPI_STATUS(status); |
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| 317 | } |
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| 318 | } |
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| 319 | |||
| 320 | /* |
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| 321 | * Empty the caches (delete the cached objects) on the assumption that |
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| 322 | * the table load filled them up more than they will be at runtime -- |
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| 323 | * thus wasting non-paged memory. |
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| 324 | */ |
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| 325 | status = acpi_purge_cached_objects(); |
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| 326 | |||
| 327 | acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK; |
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| 328 | return_ACPI_STATUS(status); |
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| 329 | } |
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| 330 | |||
| 331 | ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_objects) |