/drivers/acpi/acpica/utinit.c

  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
 17ACPI_MODULE_NAME("utinit")
 18
 19/* Local prototypes */
 20static void acpi_ut_terminate(void);
 21
 22#if (!ACPI_REDUCED_HARDWARE)
 23
 24static 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
 44static 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
 85acpi_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
222static 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
244void 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}