summaryrefslogtreecommitdiff
path: root/drivers/acpi/acpica/utinit.c
blob: 18177e4f26f742769f15bd898844bdfc532a5d0e (plain)
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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
 *
 * Module Name: utinit - Common ACPI subsystem initialization
 *
 * Copyright (C) 2000 - 2022, Intel Corp.
 *
 *****************************************************************************/

#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "acevents.h"
#include "actables.h"

#define _COMPONENT          ACPI_UTILITIES
ACPI_MODULE_NAME("utinit")

/* Local prototypes */
static void acpi_ut_terminate(void);

#if (!ACPI_REDUCED_HARDWARE)

static void acpi_ut_free_gpe_lists(void);

#else

#define acpi_ut_free_gpe_lists()
#endif				/* !ACPI_REDUCED_HARDWARE */

#if (!ACPI_REDUCED_HARDWARE)
/******************************************************************************
 *
 * FUNCTION:    acpi_ut_free_gpe_lists
 *
 * PARAMETERS:  none
 *
 * RETURN:      none
 *
 * DESCRIPTION: Free global GPE lists
 *
 ******************************************************************************/

static void acpi_ut_free_gpe_lists(void)
{
	struct acpi_gpe_block_info *gpe_block;
	struct acpi_gpe_block_info *next_gpe_block;
	struct acpi_gpe_xrupt_info *gpe_xrupt_info;
	struct acpi_gpe_xrupt_info *next_gpe_xrupt_info;

	/* Free global GPE blocks and related info structures */

	gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
	while (gpe_xrupt_info) {
		gpe_block = gpe_xrupt_info->gpe_block_list_head;
		while (gpe_block) {
			next_gpe_block = gpe_block->next;
			ACPI_FREE(gpe_block->event_info);
			ACPI_FREE(gpe_block->register_info);
			ACPI_FREE(gpe_block);

			gpe_block = next_gpe_block;
		}
		next_gpe_xrupt_info = gpe_xrupt_info->next;
		ACPI_FREE(gpe_xrupt_info);
		gpe_xrupt_info = next_gpe_xrupt_info;
	}
}
#endif				/* !ACPI_REDUCED_HARDWARE */

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_init_globals
 *
 * PARAMETERS:  None
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Initialize ACPICA globals. All globals that require specific
 *              initialization should be initialized here. This allows for
 *              a warm restart.
 *
 ******************************************************************************/

acpi_status acpi_ut_init_globals(void)
{
	acpi_status status;
	u32 i;

	ACPI_FUNCTION_TRACE(ut_init_globals);

	/* Create all memory caches */

	status = acpi_ut_create_caches();
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Address Range lists */

	for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) {
		acpi_gbl_address_range_list[i] = NULL;
	}

	/* Mutex locked flags */

	for (i = 0; i < ACPI_NUM_MUTEX; i++) {
		acpi_gbl_mutex_info[i].mutex = NULL;
		acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
		acpi_gbl_mutex_info[i].use_count = 0;
	}

	for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
		acpi_gbl_owner_id_mask[i] = 0;
	}

	/* Last owner_ID is never valid */

	acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;

	/* Event counters */

	acpi_method_count = 0;
	acpi_sci_count = 0;
	acpi_gpe_count = 0;

	for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
		acpi_fixed_event_count[i] = 0;
	}

#if (!ACPI_REDUCED_HARDWARE)

	/* GPE/SCI support */

	acpi_gbl_all_gpes_initialized = FALSE;
	acpi_gbl_gpe_xrupt_list_head = NULL;
	acpi_gbl_gpe_fadt_blocks[0] = NULL;
	acpi_gbl_gpe_fadt_blocks[1] = NULL;
	acpi_current_gpe_count = 0;

	acpi_gbl_global_event_handler = NULL;
	acpi_gbl_sci_handler_list = NULL;

#endif				/* !ACPI_REDUCED_HARDWARE */

	/* Global handlers */

	acpi_gbl_global_notify[0].handler = NULL;
	acpi_gbl_global_notify[1].handler = NULL;
	acpi_gbl_exception_handler = NULL;
	acpi_gbl_init_handler = NULL;
	acpi_gbl_table_handler = NULL;
	acpi_gbl_interface_handler = NULL;

	/* Global Lock support */

	acpi_gbl_global_lock_semaphore = NULL;
	acpi_gbl_global_lock_mutex = NULL;
	acpi_gbl_global_lock_acquired = FALSE;
	acpi_gbl_global_lock_handle = 0;
	acpi_gbl_global_lock_present = FALSE;

	/* Miscellaneous variables */

	acpi_gbl_DSDT = NULL;
	acpi_gbl_cm_single_step = FALSE;
	acpi_gbl_shutdown = FALSE;
	acpi_gbl_ns_lookup_count = 0;
	acpi_gbl_ps_find_count = 0;
	acpi_gbl_acpi_hardware_present = TRUE;
	acpi_gbl_last_owner_id_index = 0;
	acpi_gbl_next_owner_id_offset = 0;
	acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
	acpi_gbl_osi_mutex = NULL;

	/* Hardware oriented */

	acpi_gbl_events_initialized = FALSE;
	acpi_gbl_system_awake_and_running = TRUE;

	/* Namespace */

	acpi_gbl_root_node = NULL;
	acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
	acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
	acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
	acpi_gbl_root_node_struct.parent = NULL;
	acpi_gbl_root_node_struct.child = NULL;
	acpi_gbl_root_node_struct.peer = NULL;
	acpi_gbl_root_node_struct.object = NULL;

#ifdef ACPI_DISASSEMBLER
	acpi_gbl_external_list = NULL;
	acpi_gbl_num_external_methods = 0;
	acpi_gbl_resolved_external_methods = 0;
#endif

#ifdef ACPI_DEBUG_OUTPUT
	acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
#endif

#ifdef ACPI_DBG_TRACK_ALLOCATIONS
	acpi_gbl_display_final_mem_stats = FALSE;
	acpi_gbl_disable_mem_tracking = FALSE;
#endif

	return_ACPI_STATUS(AE_OK);
}

/******************************************************************************
 *
 * FUNCTION:    acpi_ut_terminate
 *
 * PARAMETERS:  none
 *
 * RETURN:      none
 *
 * DESCRIPTION: Free global memory
 *
 ******************************************************************************/

static void acpi_ut_terminate(void)
{
	ACPI_FUNCTION_TRACE(ut_terminate);

	acpi_ut_free_gpe_lists();
	acpi_ut_delete_address_lists();
	return_VOID;
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_subsystem_shutdown
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Shutdown the various components. Do not delete the mutex
 *              objects here, because the AML debugger may be still running.
 *
 ******************************************************************************/

void acpi_ut_subsystem_shutdown(void)
{
	ACPI_FUNCTION_TRACE(ut_subsystem_shutdown);

	/* Just exit if subsystem is already shutdown */

	if (acpi_gbl_shutdown) {
		ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
		return_VOID;
	}

	/* Subsystem appears active, go ahead and shut it down */

	acpi_gbl_shutdown = TRUE;
	acpi_gbl_startup_flags = 0;
	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));

#ifndef ACPI_ASL_COMPILER

	/* Close the acpi_event Handling */

	acpi_ev_terminate();

	/* Delete any dynamic _OSI interfaces */

	acpi_ut_interface_terminate();
#endif

	/* Close the Namespace */

	acpi_ns_terminate();

	/* Delete the ACPI tables */

	acpi_tb_terminate();

	/* Close the globals */

	acpi_ut_terminate();

	/* Purge the local caches */

	(void)acpi_ut_delete_caches();
	return_VOID;
}