1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 2 /****************************************************************************** 3 * 4 * Module Name: utinit - Common ACPI subsystem initialization 5 * 6 * Copyright (C) 2000 - 2020, Intel Corp. 7 * 8 *****************************************************************************/ 9 10 #include <acpi/acpi.h> 11 #include "accommon.h" 12 #include "acnamesp.h" 13 #include "acevents.h" 14 #include "actables.h" 15 16 #define _COMPONENT ACPI_UTILITIES 17 ACPI_MODULE_NAME("utinit") 18 19 /* Local prototypes */ 20 static void acpi_ut_terminate(void); 21 22 #if (!ACPI_REDUCED_HARDWARE) 23 24 static void acpi_ut_free_gpe_lists(void); 25 26 #else 27 28 #define acpi_ut_free_gpe_lists() 29 #endif /* !ACPI_REDUCED_HARDWARE */ 30 31 #if (!ACPI_REDUCED_HARDWARE) 32 /****************************************************************************** 33 * 34 * FUNCTION: acpi_ut_free_gpe_lists 35 * 36 * PARAMETERS: none 37 * 38 * RETURN: none 39 * 40 * DESCRIPTION: Free global GPE lists 41 * 42 ******************************************************************************/ 43 44 static void acpi_ut_free_gpe_lists(void) 45 { 46 struct acpi_gpe_block_info *gpe_block; 47 struct acpi_gpe_block_info *next_gpe_block; 48 struct acpi_gpe_xrupt_info *gpe_xrupt_info; 49 struct acpi_gpe_xrupt_info *next_gpe_xrupt_info; 50 51 /* Free global GPE blocks and related info structures */ 52 53 gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head; 54 while (gpe_xrupt_info) { 55 gpe_block = gpe_xrupt_info->gpe_block_list_head; 56 while (gpe_block) { 57 next_gpe_block = gpe_block->next; 58 ACPI_FREE(gpe_block->event_info); 59 ACPI_FREE(gpe_block->register_info); 60 ACPI_FREE(gpe_block); 61 62 gpe_block = next_gpe_block; 63 } 64 next_gpe_xrupt_info = gpe_xrupt_info->next; 65 ACPI_FREE(gpe_xrupt_info); 66 gpe_xrupt_info = next_gpe_xrupt_info; 67 } 68 } 69 #endif /* !ACPI_REDUCED_HARDWARE */ 70 71 /******************************************************************************* 72 * 73 * FUNCTION: acpi_ut_init_globals 74 * 75 * PARAMETERS: None 76 * 77 * RETURN: Status 78 * 79 * DESCRIPTION: Initialize ACPICA globals. All globals that require specific 80 * initialization should be initialized here. This allows for 81 * a warm restart. 82 * 83 ******************************************************************************/ 84 85 acpi_status acpi_ut_init_globals(void) 86 { 87 acpi_status status; 88 u32 i; 89 90 ACPI_FUNCTION_TRACE(ut_init_globals); 91 92 /* Create all memory caches */ 93 94 status = acpi_ut_create_caches(); 95 if (ACPI_FAILURE(status)) { 96 return_ACPI_STATUS(status); 97 } 98 99 /* Address Range lists */ 100 101 for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) { 102 acpi_gbl_address_range_list[i] = NULL; 103 } 104 105 /* Mutex locked flags */ 106 107 for (i = 0; i < ACPI_NUM_MUTEX; i++) { 108 acpi_gbl_mutex_info[i].mutex = NULL; 109 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED; 110 acpi_gbl_mutex_info[i].use_count = 0; 111 } 112 113 for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) { 114 acpi_gbl_owner_id_mask[i] = 0; 115 } 116 117 /* Last owner_ID is never valid */ 118 119 acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000; 120 121 /* Event counters */ 122 123 acpi_method_count = 0; 124 acpi_sci_count = 0; 125 acpi_gpe_count = 0; 126 127 for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) { 128 acpi_fixed_event_count[i] = 0; 129 } 130 131 #if (!ACPI_REDUCED_HARDWARE) 132 133 /* GPE/SCI support */ 134 135 acpi_gbl_all_gpes_initialized = FALSE; 136 acpi_gbl_gpe_xrupt_list_head = NULL; 137 acpi_gbl_gpe_fadt_blocks[0] = NULL; 138 acpi_gbl_gpe_fadt_blocks[1] = NULL; 139 acpi_current_gpe_count = 0; 140 141 acpi_gbl_global_event_handler = NULL; 142 acpi_gbl_sci_handler_list = NULL; 143 144 #endif /* !ACPI_REDUCED_HARDWARE */ 145 146 /* Global handlers */ 147 148 acpi_gbl_global_notify[0].handler = NULL; 149 acpi_gbl_global_notify[1].handler = NULL; 150 acpi_gbl_exception_handler = NULL; 151 acpi_gbl_init_handler = NULL; 152 acpi_gbl_table_handler = NULL; 153 acpi_gbl_interface_handler = NULL; 154 155 /* Global Lock support */ 156 157 acpi_gbl_global_lock_semaphore = NULL; 158 acpi_gbl_global_lock_mutex = NULL; 159 acpi_gbl_global_lock_acquired = FALSE; 160 acpi_gbl_global_lock_handle = 0; 161 acpi_gbl_global_lock_present = FALSE; 162 163 /* Miscellaneous variables */ 164 165 acpi_gbl_DSDT = NULL; 166 acpi_gbl_cm_single_step = FALSE; 167 acpi_gbl_shutdown = FALSE; 168 acpi_gbl_ns_lookup_count = 0; 169 acpi_gbl_ps_find_count = 0; 170 acpi_gbl_acpi_hardware_present = TRUE; 171 acpi_gbl_last_owner_id_index = 0; 172 acpi_gbl_next_owner_id_offset = 0; 173 acpi_gbl_debugger_configuration = DEBUGGER_THREADING; 174 acpi_gbl_osi_mutex = NULL; 175 176 /* Hardware oriented */ 177 178 acpi_gbl_events_initialized = FALSE; 179 acpi_gbl_system_awake_and_running = TRUE; 180 181 /* Namespace */ 182 183 acpi_gbl_root_node = NULL; 184 acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME; 185 acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED; 186 acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE; 187 acpi_gbl_root_node_struct.parent = NULL; 188 acpi_gbl_root_node_struct.child = NULL; 189 acpi_gbl_root_node_struct.peer = NULL; 190 acpi_gbl_root_node_struct.object = NULL; 191 192 #ifdef ACPI_DISASSEMBLER 193 acpi_gbl_external_list = NULL; 194 acpi_gbl_num_external_methods = 0; 195 acpi_gbl_resolved_external_methods = 0; 196 #endif 197 198 #ifdef ACPI_DEBUG_OUTPUT 199 acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX); 200 #endif 201 202 #ifdef ACPI_DBG_TRACK_ALLOCATIONS 203 acpi_gbl_display_final_mem_stats = FALSE; 204 acpi_gbl_disable_mem_tracking = FALSE; 205 #endif 206 207 return_ACPI_STATUS(AE_OK); 208 } 209 210 /****************************************************************************** 211 * 212 * FUNCTION: acpi_ut_terminate 213 * 214 * PARAMETERS: none 215 * 216 * RETURN: none 217 * 218 * DESCRIPTION: Free global memory 219 * 220 ******************************************************************************/ 221 222 static void acpi_ut_terminate(void) 223 { 224 ACPI_FUNCTION_TRACE(ut_terminate); 225 226 acpi_ut_free_gpe_lists(); 227 acpi_ut_delete_address_lists(); 228 return_VOID; 229 } 230 231 /******************************************************************************* 232 * 233 * FUNCTION: acpi_ut_subsystem_shutdown 234 * 235 * PARAMETERS: None 236 * 237 * RETURN: None 238 * 239 * DESCRIPTION: Shutdown the various components. Do not delete the mutex 240 * objects here, because the AML debugger may be still running. 241 * 242 ******************************************************************************/ 243 244 void acpi_ut_subsystem_shutdown(void) 245 { 246 ACPI_FUNCTION_TRACE(ut_subsystem_shutdown); 247 248 /* Just exit if subsystem is already shutdown */ 249 250 if (acpi_gbl_shutdown) { 251 ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated")); 252 return_VOID; 253 } 254 255 /* Subsystem appears active, go ahead and shut it down */ 256 257 acpi_gbl_shutdown = TRUE; 258 acpi_gbl_startup_flags = 0; 259 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n")); 260 261 #ifndef ACPI_ASL_COMPILER 262 263 /* Close the acpi_event Handling */ 264 265 acpi_ev_terminate(); 266 267 /* Delete any dynamic _OSI interfaces */ 268 269 acpi_ut_interface_terminate(); 270 #endif 271 272 /* Close the Namespace */ 273 274 acpi_ns_terminate(); 275 276 /* Delete the ACPI tables */ 277 278 acpi_tb_terminate(); 279 280 /* Close the globals */ 281 282 acpi_ut_terminate(); 283 284 /* Purge the local caches */ 285 286 (void)acpi_ut_delete_caches(); 287 return_VOID; 288 } 289