[ACPICA]
[reactos.git] / reactos / drivers / bus / acpi / acpica / utilities / utxfinit.c
1 /******************************************************************************
2 *
3 * Module Name: utxfinit - External interfaces for ACPICA initialization
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2016, 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 EXPORT_ACPI_INTERFACES
45
46 #include "acpi.h"
47 #include "accommon.h"
48 #include "acevents.h"
49 #include "acnamesp.h"
50 #include "acdebug.h"
51 #include "actables.h"
52
53 #define _COMPONENT ACPI_UTILITIES
54 ACPI_MODULE_NAME ("utxfinit")
55
56 /* For AcpiExec only */
57 void
58 AeDoObjectOverrides (
59 void);
60
61
62 /*******************************************************************************
63 *
64 * FUNCTION: AcpiInitializeSubsystem
65 *
66 * PARAMETERS: None
67 *
68 * RETURN: Status
69 *
70 * DESCRIPTION: Initializes all global variables. This is the first function
71 * called, so any early initialization belongs here.
72 *
73 ******************************************************************************/
74
75 ACPI_STATUS
76 AcpiInitializeSubsystem (
77 void)
78 {
79 ACPI_STATUS Status;
80
81
82 ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem);
83
84
85 AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE;
86 ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ());
87
88 /* Initialize the OS-Dependent layer */
89
90 Status = AcpiOsInitialize ();
91 if (ACPI_FAILURE (Status))
92 {
93 ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization"));
94 return_ACPI_STATUS (Status);
95 }
96
97 /* Initialize all globals used by the subsystem */
98
99 Status = AcpiUtInitGlobals ();
100 if (ACPI_FAILURE (Status))
101 {
102 ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals"));
103 return_ACPI_STATUS (Status);
104 }
105
106 /* Create the default mutex objects */
107
108 Status = AcpiUtMutexInitialize ();
109 if (ACPI_FAILURE (Status))
110 {
111 ACPI_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation"));
112 return_ACPI_STATUS (Status);
113 }
114
115 /*
116 * Initialize the namespace manager and
117 * the root of the namespace tree
118 */
119 Status = AcpiNsRootInitialize ();
120 if (ACPI_FAILURE (Status))
121 {
122 ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization"));
123 return_ACPI_STATUS (Status);
124 }
125
126 /* Initialize the global OSI interfaces list with the static names */
127
128 Status = AcpiUtInitializeInterfaces ();
129 if (ACPI_FAILURE (Status))
130 {
131 ACPI_EXCEPTION ((AE_INFO, Status, "During OSI interfaces initialization"));
132 return_ACPI_STATUS (Status);
133 }
134
135 return_ACPI_STATUS (AE_OK);
136 }
137
138 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeSubsystem)
139
140
141 /*******************************************************************************
142 *
143 * FUNCTION: AcpiEnableSubsystem
144 *
145 * PARAMETERS: Flags - Init/enable Options
146 *
147 * RETURN: Status
148 *
149 * DESCRIPTION: Completes the subsystem initialization including hardware.
150 * Puts system into ACPI mode if it isn't already.
151 *
152 ******************************************************************************/
153
154 ACPI_STATUS
155 AcpiEnableSubsystem (
156 UINT32 Flags)
157 {
158 ACPI_STATUS Status = AE_OK;
159
160
161 ACPI_FUNCTION_TRACE (AcpiEnableSubsystem);
162
163
164 /*
165 * The early initialization phase is complete. The namespace is loaded,
166 * and we can now support address spaces other than Memory, I/O, and
167 * PCI_Config.
168 */
169 AcpiGbl_EarlyInitialization = FALSE;
170
171 #if (!ACPI_REDUCED_HARDWARE)
172
173 /* Enable ACPI mode */
174
175 if (!(Flags & ACPI_NO_ACPI_ENABLE))
176 {
177 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));
178
179 AcpiGbl_OriginalMode = AcpiHwGetMode();
180
181 Status = AcpiEnable ();
182 if (ACPI_FAILURE (Status))
183 {
184 ACPI_WARNING ((AE_INFO, "AcpiEnable failed"));
185 return_ACPI_STATUS (Status);
186 }
187 }
188
189 /*
190 * Obtain a permanent mapping for the FACS. This is required for the
191 * Global Lock and the Firmware Waking Vector
192 */
193 if (!(Flags & ACPI_NO_FACS_INIT))
194 {
195 Status = AcpiTbInitializeFacs ();
196 if (ACPI_FAILURE (Status))
197 {
198 ACPI_WARNING ((AE_INFO, "Could not map the FACS table"));
199 return_ACPI_STATUS (Status);
200 }
201 }
202
203 /*
204 * Initialize ACPI Event handling (Fixed and General Purpose)
205 *
206 * Note1: We must have the hardware and events initialized before we can
207 * execute any control methods safely. Any control method can require
208 * ACPI hardware support, so the hardware must be fully initialized before
209 * any method execution!
210 *
211 * Note2: Fixed events are initialized and enabled here. GPEs are
212 * initialized, but cannot be enabled until after the hardware is
213 * completely initialized (SCI and GlobalLock activated) and the various
214 * initialization control methods are run (_REG, _STA, _INI) on the
215 * entire namespace.
216 */
217 if (!(Flags & ACPI_NO_EVENT_INIT))
218 {
219 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
220 "[Init] Initializing ACPI events\n"));
221
222 Status = AcpiEvInitializeEvents ();
223 if (ACPI_FAILURE (Status))
224 {
225 return_ACPI_STATUS (Status);
226 }
227 }
228
229 /*
230 * Install the SCI handler and Global Lock handler. This completes the
231 * hardware initialization.
232 */
233 if (!(Flags & ACPI_NO_HANDLER_INIT))
234 {
235 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
236 "[Init] Installing SCI/GL handlers\n"));
237
238 Status = AcpiEvInstallXruptHandlers ();
239 if (ACPI_FAILURE (Status))
240 {
241 return_ACPI_STATUS (Status);
242 }
243 }
244
245 #endif /* !ACPI_REDUCED_HARDWARE */
246
247 return_ACPI_STATUS (Status);
248 }
249
250 ACPI_EXPORT_SYMBOL_INIT (AcpiEnableSubsystem)
251
252
253 /*******************************************************************************
254 *
255 * FUNCTION: AcpiInitializeObjects
256 *
257 * PARAMETERS: Flags - Init/enable Options
258 *
259 * RETURN: Status
260 *
261 * DESCRIPTION: Completes namespace initialization by initializing device
262 * objects and executing AML code for Regions, buffers, etc.
263 *
264 ******************************************************************************/
265
266 ACPI_STATUS
267 AcpiInitializeObjects (
268 UINT32 Flags)
269 {
270 ACPI_STATUS Status = AE_OK;
271
272
273 ACPI_FUNCTION_TRACE (AcpiInitializeObjects);
274
275
276 #ifdef ACPI_EXEC_APP
277 /*
278 * This call implements the "initialization file" option for AcpiExec.
279 * This is the precise point that we want to perform the overrides.
280 */
281 AeDoObjectOverrides ();
282 #endif
283
284 /*
285 * Execute any module-level code that was detected during the table load
286 * phase. Although illegal since ACPI 2.0, there are many machines that
287 * contain this type of code. Each block of detected executable AML code
288 * outside of any control method is wrapped with a temporary control
289 * method object and placed on a global list. The methods on this list
290 * are executed below.
291 *
292 * This case executes the module-level code for all tables only after
293 * all of the tables have been loaded. It is a legacy option and is
294 * not compatible with other ACPI implementations. See AcpiNsLoadTable.
295 */
296 if (AcpiGbl_GroupModuleLevelCode)
297 {
298 AcpiNsExecModuleCodeList ();
299
300 /*
301 * Initialize the objects that remain uninitialized. This
302 * runs the executable AML that may be part of the
303 * declaration of these objects:
304 * OperationRegions, BufferFields, Buffers, and Packages.
305 */
306 if (!(Flags & ACPI_NO_OBJECT_INIT))
307 {
308 Status = AcpiNsInitializeObjects ();
309 if (ACPI_FAILURE (Status))
310 {
311 return_ACPI_STATUS (Status);
312 }
313 }
314 }
315
316 /*
317 * Initialize all device/region objects in the namespace. This runs
318 * the device _STA and _INI methods and region _REG methods.
319 */
320 if (!(Flags & (ACPI_NO_DEVICE_INIT | ACPI_NO_ADDRESS_SPACE_INIT)))
321 {
322 Status = AcpiNsInitializeDevices (Flags);
323 if (ACPI_FAILURE (Status))
324 {
325 return_ACPI_STATUS (Status);
326 }
327 }
328
329 /*
330 * Empty the caches (delete the cached objects) on the assumption that
331 * the table load filled them up more than they will be at runtime --
332 * thus wasting non-paged memory.
333 */
334 Status = AcpiPurgeCachedObjects ();
335
336 AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK;
337 return_ACPI_STATUS (Status);
338 }
339
340 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeObjects)