1/******************************************************************************
2 *
3 * Module Name: utinit - Common ACPI subsystem initialization
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2015, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions, and the following disclaimer,
16 *    without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 *    substantially similar to the "NO WARRANTY" disclaimer below
19 *    ("Disclaimer") and any redistribution must be conditioned upon
20 *    including a substantially similar Disclaimer requirement for further
21 *    binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 *    of any contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44#include <acpi/acpi.h>
45#include "accommon.h"
46#include "acnamesp.h"
47#include "acevents.h"
48#include "actables.h"
49
50#define _COMPONENT          ACPI_UTILITIES
51ACPI_MODULE_NAME("utinit")
52
53/* Local prototypes */
54static void acpi_ut_terminate(void);
55
56#if (!ACPI_REDUCED_HARDWARE)
57
58static void acpi_ut_free_gpe_lists(void);
59
60#else
61
62#define acpi_ut_free_gpe_lists()
63#endif				/* !ACPI_REDUCED_HARDWARE */
64
65#if (!ACPI_REDUCED_HARDWARE)
66/******************************************************************************
67 *
68 * FUNCTION:    acpi_ut_free_gpe_lists
69 *
70 * PARAMETERS:  none
71 *
72 * RETURN:      none
73 *
74 * DESCRIPTION: Free global GPE lists
75 *
76 ******************************************************************************/
77
78static void acpi_ut_free_gpe_lists(void)
79{
80	struct acpi_gpe_block_info *gpe_block;
81	struct acpi_gpe_block_info *next_gpe_block;
82	struct acpi_gpe_xrupt_info *gpe_xrupt_info;
83	struct acpi_gpe_xrupt_info *next_gpe_xrupt_info;
84
85	/* Free global GPE blocks and related info structures */
86
87	gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
88	while (gpe_xrupt_info) {
89		gpe_block = gpe_xrupt_info->gpe_block_list_head;
90		while (gpe_block) {
91			next_gpe_block = gpe_block->next;
92			ACPI_FREE(gpe_block->event_info);
93			ACPI_FREE(gpe_block->register_info);
94			ACPI_FREE(gpe_block);
95
96			gpe_block = next_gpe_block;
97		}
98		next_gpe_xrupt_info = gpe_xrupt_info->next;
99		ACPI_FREE(gpe_xrupt_info);
100		gpe_xrupt_info = next_gpe_xrupt_info;
101	}
102}
103#endif				/* !ACPI_REDUCED_HARDWARE */
104
105/*******************************************************************************
106 *
107 * FUNCTION:    acpi_ut_init_globals
108 *
109 * PARAMETERS:  None
110 *
111 * RETURN:      Status
112 *
113 * DESCRIPTION: Initialize ACPICA globals. All globals that require specific
114 *              initialization should be initialized here. This allows for
115 *              a warm restart.
116 *
117 ******************************************************************************/
118
119acpi_status acpi_ut_init_globals(void)
120{
121	acpi_status status;
122	u32 i;
123
124	ACPI_FUNCTION_TRACE(ut_init_globals);
125
126	/* Create all memory caches */
127
128	status = acpi_ut_create_caches();
129	if (ACPI_FAILURE(status)) {
130		return_ACPI_STATUS(status);
131	}
132
133	/* Address Range lists */
134
135	for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) {
136		acpi_gbl_address_range_list[i] = NULL;
137	}
138
139	/* Mutex locked flags */
140
141	for (i = 0; i < ACPI_NUM_MUTEX; i++) {
142		acpi_gbl_mutex_info[i].mutex = NULL;
143		acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
144		acpi_gbl_mutex_info[i].use_count = 0;
145	}
146
147	for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
148		acpi_gbl_owner_id_mask[i] = 0;
149	}
150
151	/* Last owner_ID is never valid */
152
153	acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
154
155	/* Event counters */
156
157	acpi_method_count = 0;
158	acpi_sci_count = 0;
159	acpi_gpe_count = 0;
160
161	for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
162		acpi_fixed_event_count[i] = 0;
163	}
164
165#if (!ACPI_REDUCED_HARDWARE)
166
167	/* GPE/SCI support */
168
169	acpi_gbl_all_gpes_initialized = FALSE;
170	acpi_gbl_gpe_xrupt_list_head = NULL;
171	acpi_gbl_gpe_fadt_blocks[0] = NULL;
172	acpi_gbl_gpe_fadt_blocks[1] = NULL;
173	acpi_current_gpe_count = 0;
174
175	acpi_gbl_global_event_handler = NULL;
176	acpi_gbl_sci_handler_list = NULL;
177
178#endif				/* !ACPI_REDUCED_HARDWARE */
179
180	/* Global handlers */
181
182	acpi_gbl_global_notify[0].handler = NULL;
183	acpi_gbl_global_notify[1].handler = NULL;
184	acpi_gbl_exception_handler = NULL;
185	acpi_gbl_init_handler = NULL;
186	acpi_gbl_table_handler = NULL;
187	acpi_gbl_interface_handler = NULL;
188
189	/* Global Lock support */
190
191	acpi_gbl_global_lock_semaphore = NULL;
192	acpi_gbl_global_lock_mutex = NULL;
193	acpi_gbl_global_lock_acquired = FALSE;
194	acpi_gbl_global_lock_handle = 0;
195	acpi_gbl_global_lock_present = FALSE;
196
197	/* Miscellaneous variables */
198
199	acpi_gbl_DSDT = NULL;
200	acpi_gbl_cm_single_step = FALSE;
201	acpi_gbl_shutdown = FALSE;
202	acpi_gbl_ns_lookup_count = 0;
203	acpi_gbl_ps_find_count = 0;
204	acpi_gbl_acpi_hardware_present = TRUE;
205	acpi_gbl_last_owner_id_index = 0;
206	acpi_gbl_next_owner_id_offset = 0;
207	acpi_gbl_trace_dbg_level = 0;
208	acpi_gbl_trace_dbg_layer = 0;
209	acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
210	acpi_gbl_osi_mutex = NULL;
211	acpi_gbl_reg_methods_executed = FALSE;
212
213	/* Hardware oriented */
214
215	acpi_gbl_events_initialized = FALSE;
216	acpi_gbl_system_awake_and_running = TRUE;
217
218	/* Namespace */
219
220	acpi_gbl_module_code_list = NULL;
221	acpi_gbl_root_node = NULL;
222	acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
223	acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
224	acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
225	acpi_gbl_root_node_struct.parent = NULL;
226	acpi_gbl_root_node_struct.child = NULL;
227	acpi_gbl_root_node_struct.peer = NULL;
228	acpi_gbl_root_node_struct.object = NULL;
229
230#ifdef ACPI_DISASSEMBLER
231	acpi_gbl_external_list = NULL;
232	acpi_gbl_num_external_methods = 0;
233	acpi_gbl_resolved_external_methods = 0;
234#endif
235
236#ifdef ACPI_DEBUG_OUTPUT
237	acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
238#endif
239
240#ifdef ACPI_DBG_TRACK_ALLOCATIONS
241	acpi_gbl_display_final_mem_stats = FALSE;
242	acpi_gbl_disable_mem_tracking = FALSE;
243#endif
244
245	ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = FALSE);
246
247	return_ACPI_STATUS(AE_OK);
248}
249
250/******************************************************************************
251 *
252 * FUNCTION:    acpi_ut_terminate
253 *
254 * PARAMETERS:  none
255 *
256 * RETURN:      none
257 *
258 * DESCRIPTION: Free global memory
259 *
260 ******************************************************************************/
261
262static void acpi_ut_terminate(void)
263{
264	ACPI_FUNCTION_TRACE(ut_terminate);
265
266	acpi_ut_free_gpe_lists();
267	acpi_ut_delete_address_lists();
268	return_VOID;
269}
270
271/*******************************************************************************
272 *
273 * FUNCTION:    acpi_ut_subsystem_shutdown
274 *
275 * PARAMETERS:  None
276 *
277 * RETURN:      None
278 *
279 * DESCRIPTION: Shutdown the various components. Do not delete the mutex
280 *              objects here, because the AML debugger may be still running.
281 *
282 ******************************************************************************/
283
284void acpi_ut_subsystem_shutdown(void)
285{
286	ACPI_FUNCTION_TRACE(ut_subsystem_shutdown);
287
288#ifndef ACPI_ASL_COMPILER
289
290	/* Close the acpi_event Handling */
291
292	acpi_ev_terminate();
293
294	/* Delete any dynamic _OSI interfaces */
295
296	acpi_ut_interface_terminate();
297#endif
298
299	/* Close the Namespace */
300
301	acpi_ns_terminate();
302
303	/* Delete the ACPI tables */
304
305	acpi_tb_terminate();
306
307	/* Close the globals */
308
309	acpi_ut_terminate();
310
311	/* Purge the local caches */
312
313	(void)acpi_ut_delete_caches();
314	return_VOID;
315}
316