Revert "ARM: tegra: tegratab: dummy change"
[linux-2.6.git] / drivers / acpi / acpica / utglobal.c
1 /******************************************************************************
2  *
3  * Module Name: utglobal - Global variables for the ACPI subsystem
4  *
5  *****************************************************************************/
6
7 /*
8  * Copyright (C) 2000 - 2012, 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 #define DEFINE_ACPI_GLOBALS
45
46 #include <linux/export.h>
47 #include <acpi/acpi.h>
48 #include "accommon.h"
49
50 #define _COMPONENT          ACPI_UTILITIES
51 ACPI_MODULE_NAME("utglobal")
52
53 /*******************************************************************************
54  *
55  * Static global variable initialization.
56  *
57  ******************************************************************************/
58 /*
59  * We want the debug switches statically initialized so they
60  * are already set when the debugger is entered.
61  */
62 /* Debug switch - level and trace mask */
63 u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
64
65 /* Debug switch - layer (component) mask */
66
67 u32 acpi_dbg_layer = 0;
68 u32 acpi_gbl_nesting_level = 0;
69
70 /* Debugger globals */
71
72 u8 acpi_gbl_db_terminate_threads = FALSE;
73 u8 acpi_gbl_abort_method = FALSE;
74 u8 acpi_gbl_method_executing = FALSE;
75
76 /* System flags */
77
78 u32 acpi_gbl_startup_flags = 0;
79
80 /* System starts uninitialized */
81
82 u8 acpi_gbl_shutdown = TRUE;
83
84 const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
85         "\\_S0_",
86         "\\_S1_",
87         "\\_S2_",
88         "\\_S3_",
89         "\\_S4_",
90         "\\_S5_"
91 };
92
93 const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS] = {
94         "_S0W",
95         "_S1W",
96         "_S2W",
97         "_S3W",
98         "_S4W"
99 };
100
101 const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS] = {
102         "_S1D",
103         "_S2D",
104         "_S3D",
105         "_S4D"
106 };
107
108 /*******************************************************************************
109  *
110  * Namespace globals
111  *
112  ******************************************************************************/
113 /*
114  * Predefined ACPI Names (Built-in to the Interpreter)
115  *
116  * NOTES:
117  * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
118  *    during the initialization sequence.
119  * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
120  *    perform a Notify() operation on it. 09/2010: Changed to type Device.
121  *    This still allows notifies, but does not confuse host code that
122  *    searches for valid thermal_zone objects.
123  */
124 const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
125         {"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
126         {"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
127         {"_SB_", ACPI_TYPE_DEVICE, NULL},
128         {"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
129         {"_TZ_", ACPI_TYPE_DEVICE, NULL},
130         {"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
131         {"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
132         {"_GL_", ACPI_TYPE_MUTEX, (char *)1},
133
134 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
135         {"_OSI", ACPI_TYPE_METHOD, (char *)1},
136 #endif
137
138         /* Table terminator */
139
140         {NULL, ACPI_TYPE_ANY, NULL}
141 };
142
143 #if (!ACPI_REDUCED_HARDWARE)
144 /******************************************************************************
145  *
146  * Event and Hardware globals
147  *
148  ******************************************************************************/
149
150 struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
151         /* Name                                     Parent Register             Register Bit Position                   Register Bit Mask       */
152
153         /* ACPI_BITREG_TIMER_STATUS         */ {ACPI_REGISTER_PM1_STATUS,
154                                                 ACPI_BITPOSITION_TIMER_STATUS,
155                                                 ACPI_BITMASK_TIMER_STATUS},
156         /* ACPI_BITREG_BUS_MASTER_STATUS    */ {ACPI_REGISTER_PM1_STATUS,
157                                                 ACPI_BITPOSITION_BUS_MASTER_STATUS,
158                                                 ACPI_BITMASK_BUS_MASTER_STATUS},
159         /* ACPI_BITREG_GLOBAL_LOCK_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
160                                                 ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,
161                                                 ACPI_BITMASK_GLOBAL_LOCK_STATUS},
162         /* ACPI_BITREG_POWER_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
163                                                 ACPI_BITPOSITION_POWER_BUTTON_STATUS,
164                                                 ACPI_BITMASK_POWER_BUTTON_STATUS},
165         /* ACPI_BITREG_SLEEP_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
166                                                 ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,
167                                                 ACPI_BITMASK_SLEEP_BUTTON_STATUS},
168         /* ACPI_BITREG_RT_CLOCK_STATUS      */ {ACPI_REGISTER_PM1_STATUS,
169                                                 ACPI_BITPOSITION_RT_CLOCK_STATUS,
170                                                 ACPI_BITMASK_RT_CLOCK_STATUS},
171         /* ACPI_BITREG_WAKE_STATUS          */ {ACPI_REGISTER_PM1_STATUS,
172                                                 ACPI_BITPOSITION_WAKE_STATUS,
173                                                 ACPI_BITMASK_WAKE_STATUS},
174         /* ACPI_BITREG_PCIEXP_WAKE_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
175                                                 ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
176                                                 ACPI_BITMASK_PCIEXP_WAKE_STATUS},
177
178         /* ACPI_BITREG_TIMER_ENABLE         */ {ACPI_REGISTER_PM1_ENABLE,
179                                                 ACPI_BITPOSITION_TIMER_ENABLE,
180                                                 ACPI_BITMASK_TIMER_ENABLE},
181         /* ACPI_BITREG_GLOBAL_LOCK_ENABLE   */ {ACPI_REGISTER_PM1_ENABLE,
182                                                 ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,
183                                                 ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
184         /* ACPI_BITREG_POWER_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
185                                                 ACPI_BITPOSITION_POWER_BUTTON_ENABLE,
186                                                 ACPI_BITMASK_POWER_BUTTON_ENABLE},
187         /* ACPI_BITREG_SLEEP_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
188                                                 ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,
189                                                 ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
190         /* ACPI_BITREG_RT_CLOCK_ENABLE      */ {ACPI_REGISTER_PM1_ENABLE,
191                                                 ACPI_BITPOSITION_RT_CLOCK_ENABLE,
192                                                 ACPI_BITMASK_RT_CLOCK_ENABLE},
193         /* ACPI_BITREG_PCIEXP_WAKE_DISABLE  */ {ACPI_REGISTER_PM1_ENABLE,
194                                                 ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
195                                                 ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
196
197         /* ACPI_BITREG_SCI_ENABLE           */ {ACPI_REGISTER_PM1_CONTROL,
198                                                 ACPI_BITPOSITION_SCI_ENABLE,
199                                                 ACPI_BITMASK_SCI_ENABLE},
200         /* ACPI_BITREG_BUS_MASTER_RLD       */ {ACPI_REGISTER_PM1_CONTROL,
201                                                 ACPI_BITPOSITION_BUS_MASTER_RLD,
202                                                 ACPI_BITMASK_BUS_MASTER_RLD},
203         /* ACPI_BITREG_GLOBAL_LOCK_RELEASE  */ {ACPI_REGISTER_PM1_CONTROL,
204                                                 ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,
205                                                 ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
206         /* ACPI_BITREG_SLEEP_TYPE           */ {ACPI_REGISTER_PM1_CONTROL,
207                                                 ACPI_BITPOSITION_SLEEP_TYPE,
208                                                 ACPI_BITMASK_SLEEP_TYPE},
209         /* ACPI_BITREG_SLEEP_ENABLE         */ {ACPI_REGISTER_PM1_CONTROL,
210                                                 ACPI_BITPOSITION_SLEEP_ENABLE,
211                                                 ACPI_BITMASK_SLEEP_ENABLE},
212
213         /* ACPI_BITREG_ARB_DIS              */ {ACPI_REGISTER_PM2_CONTROL,
214                                                 ACPI_BITPOSITION_ARB_DISABLE,
215                                                 ACPI_BITMASK_ARB_DISABLE}
216 };
217
218 struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = {
219         /* ACPI_EVENT_PMTIMER       */ {ACPI_BITREG_TIMER_STATUS,
220                                         ACPI_BITREG_TIMER_ENABLE,
221                                         ACPI_BITMASK_TIMER_STATUS,
222                                         ACPI_BITMASK_TIMER_ENABLE},
223         /* ACPI_EVENT_GLOBAL        */ {ACPI_BITREG_GLOBAL_LOCK_STATUS,
224                                         ACPI_BITREG_GLOBAL_LOCK_ENABLE,
225                                         ACPI_BITMASK_GLOBAL_LOCK_STATUS,
226                                         ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
227         /* ACPI_EVENT_POWER_BUTTON  */ {ACPI_BITREG_POWER_BUTTON_STATUS,
228                                         ACPI_BITREG_POWER_BUTTON_ENABLE,
229                                         ACPI_BITMASK_POWER_BUTTON_STATUS,
230                                         ACPI_BITMASK_POWER_BUTTON_ENABLE},
231         /* ACPI_EVENT_SLEEP_BUTTON  */ {ACPI_BITREG_SLEEP_BUTTON_STATUS,
232                                         ACPI_BITREG_SLEEP_BUTTON_ENABLE,
233                                         ACPI_BITMASK_SLEEP_BUTTON_STATUS,
234                                         ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
235         /* ACPI_EVENT_RTC           */ {ACPI_BITREG_RT_CLOCK_STATUS,
236                                         ACPI_BITREG_RT_CLOCK_ENABLE,
237                                         ACPI_BITMASK_RT_CLOCK_STATUS,
238                                         ACPI_BITMASK_RT_CLOCK_ENABLE},
239 };
240 #endif                          /* !ACPI_REDUCED_HARDWARE */
241
242 /*******************************************************************************
243  *
244  * FUNCTION:    acpi_ut_init_globals
245  *
246  * PARAMETERS:  None
247  *
248  * RETURN:      Status
249  *
250  * DESCRIPTION: Init library globals.  All globals that require specific
251  *              initialization should be initialized here!
252  *
253  ******************************************************************************/
254
255 acpi_status acpi_ut_init_globals(void)
256 {
257         acpi_status status;
258         u32 i;
259
260         ACPI_FUNCTION_TRACE(ut_init_globals);
261
262         /* Create all memory caches */
263
264         status = acpi_ut_create_caches();
265         if (ACPI_FAILURE(status)) {
266                 return_ACPI_STATUS(status);
267         }
268
269         /* Address Range lists */
270
271         for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++) {
272                 acpi_gbl_address_range_list[i] = NULL;
273         }
274
275         /* Mutex locked flags */
276
277         for (i = 0; i < ACPI_NUM_MUTEX; i++) {
278                 acpi_gbl_mutex_info[i].mutex = NULL;
279                 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
280                 acpi_gbl_mutex_info[i].use_count = 0;
281         }
282
283         for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
284                 acpi_gbl_owner_id_mask[i] = 0;
285         }
286
287         /* Last owner_iD is never valid */
288
289         acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
290
291 #if (!ACPI_REDUCED_HARDWARE)
292
293         /* GPE support */
294
295         acpi_gbl_gpe_xrupt_list_head = NULL;
296         acpi_gbl_gpe_fadt_blocks[0] = NULL;
297         acpi_gbl_gpe_fadt_blocks[1] = NULL;
298         acpi_current_gpe_count = 0;
299         acpi_gbl_all_gpes_initialized = FALSE;
300
301         acpi_gbl_global_event_handler = NULL;
302
303 #endif                          /* !ACPI_REDUCED_HARDWARE */
304
305         /* Global handlers */
306
307         acpi_gbl_system_notify.handler = NULL;
308         acpi_gbl_device_notify.handler = NULL;
309         acpi_gbl_exception_handler = NULL;
310         acpi_gbl_init_handler = NULL;
311         acpi_gbl_table_handler = NULL;
312         acpi_gbl_interface_handler = NULL;
313
314         /* Global Lock support */
315
316         acpi_gbl_global_lock_semaphore = NULL;
317         acpi_gbl_global_lock_mutex = NULL;
318         acpi_gbl_global_lock_acquired = FALSE;
319         acpi_gbl_global_lock_handle = 0;
320         acpi_gbl_global_lock_present = FALSE;
321
322         /* Miscellaneous variables */
323
324         acpi_gbl_DSDT = NULL;
325         acpi_gbl_cm_single_step = FALSE;
326         acpi_gbl_db_terminate_threads = FALSE;
327         acpi_gbl_shutdown = FALSE;
328         acpi_gbl_ns_lookup_count = 0;
329         acpi_gbl_ps_find_count = 0;
330         acpi_gbl_acpi_hardware_present = TRUE;
331         acpi_gbl_last_owner_id_index = 0;
332         acpi_gbl_next_owner_id_offset = 0;
333         acpi_gbl_trace_method_name = 0;
334         acpi_gbl_trace_dbg_level = 0;
335         acpi_gbl_trace_dbg_layer = 0;
336         acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
337         acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
338         acpi_gbl_osi_data = 0;
339         acpi_gbl_osi_mutex = NULL;
340         acpi_gbl_reg_methods_executed = FALSE;
341
342         /* Hardware oriented */
343
344         acpi_gbl_events_initialized = FALSE;
345         acpi_gbl_system_awake_and_running = TRUE;
346
347         /* Namespace */
348
349         acpi_gbl_module_code_list = NULL;
350         acpi_gbl_root_node = NULL;
351         acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
352         acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
353         acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
354         acpi_gbl_root_node_struct.parent = NULL;
355         acpi_gbl_root_node_struct.child = NULL;
356         acpi_gbl_root_node_struct.peer = NULL;
357         acpi_gbl_root_node_struct.object = NULL;
358
359 #ifdef ACPI_DEBUG_OUTPUT
360         acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
361 #endif
362
363 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
364         acpi_gbl_display_final_mem_stats = FALSE;
365 #endif
366
367         return_ACPI_STATUS(AE_OK);
368 }
369
370 ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
371 ACPI_EXPORT_SYMBOL(acpi_dbg_level)
372 ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
373 ACPI_EXPORT_SYMBOL(acpi_current_gpe_count)