Commit | Line | Data |
---|---|---|
d978348b BM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: utxfinit - External interfaces for ACPICA initialization | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
25f044e6 | 8 | * Copyright (C) 2000 - 2013, Intel Corp. |
d978348b BM |
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 <linux/export.h> | |
45 | #include <acpi/acpi.h> | |
46 | #include "accommon.h" | |
47 | #include "acevents.h" | |
48 | #include "acnamesp.h" | |
49 | #include "acdebug.h" | |
50 | #include "actables.h" | |
51 | ||
52 | #define _COMPONENT ACPI_UTILITIES | |
53 | ACPI_MODULE_NAME("utxfinit") | |
54 | ||
55 | /******************************************************************************* | |
56 | * | |
57 | * FUNCTION: acpi_initialize_subsystem | |
58 | * | |
59 | * PARAMETERS: None | |
60 | * | |
61 | * RETURN: Status | |
62 | * | |
63 | * DESCRIPTION: Initializes all global variables. This is the first function | |
64 | * called, so any early initialization belongs here. | |
65 | * | |
66 | ******************************************************************************/ | |
67 | acpi_status acpi_initialize_subsystem(void) | |
68 | { | |
69 | acpi_status status; | |
70 | ||
71 | ACPI_FUNCTION_TRACE(acpi_initialize_subsystem); | |
72 | ||
73 | acpi_gbl_startup_flags = ACPI_SUBSYSTEM_INITIALIZE; | |
74 | ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace()); | |
75 | ||
76 | /* Initialize the OS-Dependent layer */ | |
77 | ||
78 | status = acpi_os_initialize(); | |
79 | if (ACPI_FAILURE(status)) { | |
80 | ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization")); | |
81 | return_ACPI_STATUS(status); | |
82 | } | |
83 | ||
84 | /* Initialize all globals used by the subsystem */ | |
85 | ||
86 | status = acpi_ut_init_globals(); | |
87 | if (ACPI_FAILURE(status)) { | |
88 | ACPI_EXCEPTION((AE_INFO, status, | |
89 | "During initialization of globals")); | |
90 | return_ACPI_STATUS(status); | |
91 | } | |
92 | ||
93 | /* Create the default mutex objects */ | |
94 | ||
95 | status = acpi_ut_mutex_initialize(); | |
96 | if (ACPI_FAILURE(status)) { | |
97 | ACPI_EXCEPTION((AE_INFO, status, | |
98 | "During Global Mutex creation")); | |
99 | return_ACPI_STATUS(status); | |
100 | } | |
101 | ||
102 | /* | |
103 | * Initialize the namespace manager and | |
104 | * the root of the namespace tree | |
105 | */ | |
106 | status = acpi_ns_root_initialize(); | |
107 | if (ACPI_FAILURE(status)) { | |
108 | ACPI_EXCEPTION((AE_INFO, status, | |
109 | "During Namespace initialization")); | |
110 | return_ACPI_STATUS(status); | |
111 | } | |
112 | ||
113 | /* Initialize the global OSI interfaces list with the static names */ | |
114 | ||
115 | status = acpi_ut_initialize_interfaces(); | |
116 | if (ACPI_FAILURE(status)) { | |
117 | ACPI_EXCEPTION((AE_INFO, status, | |
118 | "During OSI interfaces initialization")); | |
119 | return_ACPI_STATUS(status); | |
120 | } | |
121 | ||
122 | /* If configured, initialize the AML debugger */ | |
123 | ||
124 | ACPI_DEBUGGER_EXEC(status = acpi_db_initialize()); | |
125 | return_ACPI_STATUS(status); | |
126 | } | |
127 | ACPI_EXPORT_SYMBOL(acpi_initialize_subsystem) | |
128 | ||
129 | /******************************************************************************* | |
130 | * | |
131 | * FUNCTION: acpi_enable_subsystem | |
132 | * | |
133 | * PARAMETERS: flags - Init/enable Options | |
134 | * | |
135 | * RETURN: Status | |
136 | * | |
137 | * DESCRIPTION: Completes the subsystem initialization including hardware. | |
138 | * Puts system into ACPI mode if it isn't already. | |
139 | * | |
140 | ******************************************************************************/ | |
141 | acpi_status acpi_enable_subsystem(u32 flags) | |
142 | { | |
143 | acpi_status status = AE_OK; | |
144 | ||
145 | ACPI_FUNCTION_TRACE(acpi_enable_subsystem); | |
146 | ||
147 | #if (!ACPI_REDUCED_HARDWARE) | |
148 | ||
149 | /* Enable ACPI mode */ | |
150 | ||
151 | if (!(flags & ACPI_NO_ACPI_ENABLE)) { | |
152 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
153 | "[Init] Going into ACPI mode\n")); | |
154 | ||
155 | acpi_gbl_original_mode = acpi_hw_get_mode(); | |
156 | ||
157 | status = acpi_enable(); | |
158 | if (ACPI_FAILURE(status)) { | |
159 | ACPI_WARNING((AE_INFO, "AcpiEnable failed")); | |
160 | return_ACPI_STATUS(status); | |
161 | } | |
162 | } | |
163 | ||
164 | /* | |
165 | * Obtain a permanent mapping for the FACS. This is required for the | |
166 | * Global Lock and the Firmware Waking Vector | |
167 | */ | |
168 | status = acpi_tb_initialize_facs(); | |
169 | if (ACPI_FAILURE(status)) { | |
170 | ACPI_WARNING((AE_INFO, "Could not map the FACS table")); | |
171 | return_ACPI_STATUS(status); | |
172 | } | |
173 | #endif /* !ACPI_REDUCED_HARDWARE */ | |
174 | ||
175 | /* | |
176 | * Install the default op_region handlers. These are installed unless | |
177 | * other handlers have already been installed via the | |
178 | * install_address_space_handler interface. | |
179 | */ | |
180 | if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { | |
181 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
182 | "[Init] Installing default address space handlers\n")); | |
183 | ||
184 | status = acpi_ev_install_region_handlers(); | |
185 | if (ACPI_FAILURE(status)) { | |
186 | return_ACPI_STATUS(status); | |
187 | } | |
188 | } | |
189 | #if (!ACPI_REDUCED_HARDWARE) | |
190 | /* | |
191 | * Initialize ACPI Event handling (Fixed and General Purpose) | |
192 | * | |
193 | * Note1: We must have the hardware and events initialized before we can | |
194 | * execute any control methods safely. Any control method can require | |
195 | * ACPI hardware support, so the hardware must be fully initialized before | |
196 | * any method execution! | |
197 | * | |
198 | * Note2: Fixed events are initialized and enabled here. GPEs are | |
199 | * initialized, but cannot be enabled until after the hardware is | |
200 | * completely initialized (SCI and global_lock activated) and the various | |
201 | * initialization control methods are run (_REG, _STA, _INI) on the | |
202 | * entire namespace. | |
203 | */ | |
204 | if (!(flags & ACPI_NO_EVENT_INIT)) { | |
205 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
206 | "[Init] Initializing ACPI events\n")); | |
207 | ||
208 | status = acpi_ev_initialize_events(); | |
209 | if (ACPI_FAILURE(status)) { | |
210 | return_ACPI_STATUS(status); | |
211 | } | |
212 | } | |
213 | ||
214 | /* | |
215 | * Install the SCI handler and Global Lock handler. This completes the | |
216 | * hardware initialization. | |
217 | */ | |
218 | if (!(flags & ACPI_NO_HANDLER_INIT)) { | |
219 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
220 | "[Init] Installing SCI/GL handlers\n")); | |
221 | ||
222 | status = acpi_ev_install_xrupt_handlers(); | |
223 | if (ACPI_FAILURE(status)) { | |
224 | return_ACPI_STATUS(status); | |
225 | } | |
226 | } | |
227 | #endif /* !ACPI_REDUCED_HARDWARE */ | |
228 | ||
229 | return_ACPI_STATUS(status); | |
230 | } | |
231 | ACPI_EXPORT_SYMBOL(acpi_enable_subsystem) | |
232 | ||
233 | /******************************************************************************* | |
234 | * | |
235 | * FUNCTION: acpi_initialize_objects | |
236 | * | |
237 | * PARAMETERS: flags - Init/enable Options | |
238 | * | |
239 | * RETURN: Status | |
240 | * | |
241 | * DESCRIPTION: Completes namespace initialization by initializing device | |
242 | * objects and executing AML code for Regions, buffers, etc. | |
243 | * | |
244 | ******************************************************************************/ | |
245 | acpi_status acpi_initialize_objects(u32 flags) | |
246 | { | |
247 | acpi_status status = AE_OK; | |
248 | ||
249 | ACPI_FUNCTION_TRACE(acpi_initialize_objects); | |
250 | ||
251 | /* | |
252 | * Run all _REG methods | |
253 | * | |
254 | * Note: Any objects accessed by the _REG methods will be automatically | |
255 | * initialized, even if they contain executable AML (see the call to | |
256 | * acpi_ns_initialize_objects below). | |
257 | */ | |
258 | if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { | |
259 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
260 | "[Init] Executing _REG OpRegion methods\n")); | |
261 | ||
262 | status = acpi_ev_initialize_op_regions(); | |
263 | if (ACPI_FAILURE(status)) { | |
264 | return_ACPI_STATUS(status); | |
265 | } | |
266 | } | |
267 | ||
268 | /* | |
269 | * Execute any module-level code that was detected during the table load | |
270 | * phase. Although illegal since ACPI 2.0, there are many machines that | |
271 | * contain this type of code. Each block of detected executable AML code | |
272 | * outside of any control method is wrapped with a temporary control | |
273 | * method object and placed on a global list. The methods on this list | |
274 | * are executed below. | |
275 | */ | |
276 | acpi_ns_exec_module_code_list(); | |
277 | ||
278 | /* | |
279 | * Initialize the objects that remain uninitialized. This runs the | |
280 | * executable AML that may be part of the declaration of these objects: | |
281 | * operation_regions, buffer_fields, Buffers, and Packages. | |
282 | */ | |
283 | if (!(flags & ACPI_NO_OBJECT_INIT)) { | |
284 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
285 | "[Init] Completing Initialization of ACPI Objects\n")); | |
286 | ||
287 | status = acpi_ns_initialize_objects(); | |
288 | if (ACPI_FAILURE(status)) { | |
289 | return_ACPI_STATUS(status); | |
290 | } | |
291 | } | |
292 | ||
293 | /* | |
294 | * Initialize all device objects in the namespace. This runs the device | |
295 | * _STA and _INI methods. | |
296 | */ | |
297 | if (!(flags & ACPI_NO_DEVICE_INIT)) { | |
298 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
299 | "[Init] Initializing ACPI Devices\n")); | |
300 | ||
301 | status = acpi_ns_initialize_devices(); | |
302 | if (ACPI_FAILURE(status)) { | |
303 | return_ACPI_STATUS(status); | |
304 | } | |
305 | } | |
306 | ||
307 | /* | |
308 | * Empty the caches (delete the cached objects) on the assumption that | |
309 | * the table load filled them up more than they will be at runtime -- | |
310 | * thus wasting non-paged memory. | |
311 | */ | |
312 | status = acpi_purge_cached_objects(); | |
313 | ||
314 | acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK; | |
315 | return_ACPI_STATUS(status); | |
316 | } | |
317 | ACPI_EXPORT_SYMBOL(acpi_initialize_objects) |