1 /******************************************************************************
2 *
3 * Module Name: utxfinit - External interfaces for ACPICA 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 #define EXPORT_ACPI_INTERFACES
45
46 #include <contrib/dev/acpica/include/acpi.h>
47 #include <contrib/dev/acpica/include/accommon.h>
48 #include <contrib/dev/acpica/include/acevents.h>
49 #include <contrib/dev/acpica/include/acnamesp.h>
50 #include <contrib/dev/acpica/include/acdebug.h>
51 #include <contrib/dev/acpica/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
AcpiInitializeSubsystem(void)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
ACPI_EXPORT_SYMBOL_INIT(AcpiInitializeSubsystem)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 #if (!ACPI_REDUCED_HARDWARE)
165
166 /* Enable ACPI mode */
167
168 if (!(Flags & ACPI_NO_ACPI_ENABLE))
169 {
170 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));
171
172 AcpiGbl_OriginalMode = AcpiHwGetMode();
173
174 Status = AcpiEnable ();
175 if (ACPI_FAILURE (Status))
176 {
177 ACPI_WARNING ((AE_INFO, "AcpiEnable failed"));
178 return_ACPI_STATUS (Status);
179 }
180 }
181
182 /*
183 * Obtain a permanent mapping for the FACS. This is required for the
184 * Global Lock and the Firmware Waking Vector
185 */
186 if (!(Flags & ACPI_NO_FACS_INIT))
187 {
188 Status = AcpiTbInitializeFacs ();
189 if (ACPI_FAILURE (Status))
190 {
191 ACPI_WARNING ((AE_INFO, "Could not map the FACS table"));
192 return_ACPI_STATUS (Status);
193 }
194 }
195
196 #endif /* !ACPI_REDUCED_HARDWARE */
197
198 /*
199 * Install the default OpRegion handlers. These are installed unless
200 * other handlers have already been installed via the
201 * InstallAddressSpaceHandler interface.
202 */
203 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
204 {
205 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
206 "[Init] Installing default address space handlers\n"));
207
208 Status = AcpiEvInstallRegionHandlers ();
209 if (ACPI_FAILURE (Status))
210 {
211 return_ACPI_STATUS (Status);
212 }
213 }
214
215 #if (!ACPI_REDUCED_HARDWARE)
216 /*
217 * Initialize ACPI Event handling (Fixed and General Purpose)
218 *
219 * Note1: We must have the hardware and events initialized before we can
220 * execute any control methods safely. Any control method can require
221 * ACPI hardware support, so the hardware must be fully initialized before
222 * any method execution!
223 *
224 * Note2: Fixed events are initialized and enabled here. GPEs are
225 * initialized, but cannot be enabled until after the hardware is
226 * completely initialized (SCI and GlobalLock activated) and the various
227 * initialization control methods are run (_REG, _STA, _INI) on the
228 * entire namespace.
229 */
230 if (!(Flags & ACPI_NO_EVENT_INIT))
231 {
232 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
233 "[Init] Initializing ACPI events\n"));
234
235 Status = AcpiEvInitializeEvents ();
236 if (ACPI_FAILURE (Status))
237 {
238 return_ACPI_STATUS (Status);
239 }
240 }
241
242 /*
243 * Install the SCI handler and Global Lock handler. This completes the
244 * hardware initialization.
245 */
246 if (!(Flags & ACPI_NO_HANDLER_INIT))
247 {
248 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
249 "[Init] Installing SCI/GL handlers\n"));
250
251 Status = AcpiEvInstallXruptHandlers ();
252 if (ACPI_FAILURE (Status))
253 {
254 return_ACPI_STATUS (Status);
255 }
256 }
257
258 #endif /* !ACPI_REDUCED_HARDWARE */
259
260 return_ACPI_STATUS (Status);
261 }
262
ACPI_EXPORT_SYMBOL_INIT(AcpiEnableSubsystem)263 ACPI_EXPORT_SYMBOL_INIT (AcpiEnableSubsystem)
264
265
266 /*******************************************************************************
267 *
268 * FUNCTION: AcpiInitializeObjects
269 *
270 * PARAMETERS: Flags - Init/enable Options
271 *
272 * RETURN: Status
273 *
274 * DESCRIPTION: Completes namespace initialization by initializing device
275 * objects and executing AML code for Regions, buffers, etc.
276 *
277 ******************************************************************************/
278
279 ACPI_STATUS
280 AcpiInitializeObjects (
281 UINT32 Flags)
282 {
283 ACPI_STATUS Status = AE_OK;
284
285
286 ACPI_FUNCTION_TRACE (AcpiInitializeObjects);
287
288
289 /*
290 * Run all _REG methods
291 *
292 * Note: Any objects accessed by the _REG methods will be automatically
293 * initialized, even if they contain executable AML (see the call to
294 * AcpiNsInitializeObjects below).
295 */
296 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
297 {
298 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
299 "[Init] Executing _REG OpRegion methods\n"));
300
301 Status = AcpiEvInitializeOpRegions ();
302 if (ACPI_FAILURE (Status))
303 {
304 return_ACPI_STATUS (Status);
305 }
306 }
307
308 #ifdef ACPI_EXEC_APP
309 /*
310 * This call implements the "initialization file" option for AcpiExec.
311 * This is the precise point that we want to perform the overrides.
312 */
313 AeDoObjectOverrides ();
314 #endif
315
316 /*
317 * Execute any module-level code that was detected during the table load
318 * phase. Although illegal since ACPI 2.0, there are many machines that
319 * contain this type of code. Each block of detected executable AML code
320 * outside of any control method is wrapped with a temporary control
321 * method object and placed on a global list. The methods on this list
322 * are executed below.
323 */
324 AcpiNsExecModuleCodeList ();
325
326 /*
327 * Initialize the objects that remain uninitialized. This runs the
328 * executable AML that may be part of the declaration of these objects:
329 * OperationRegions, BufferFields, Buffers, and Packages.
330 */
331 if (!(Flags & ACPI_NO_OBJECT_INIT))
332 {
333 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
334 "[Init] Completing Initialization of ACPI Objects\n"));
335
336 Status = AcpiNsInitializeObjects ();
337 if (ACPI_FAILURE (Status))
338 {
339 return_ACPI_STATUS (Status);
340 }
341 }
342
343 /*
344 * Initialize all device objects in the namespace. This runs the device
345 * _STA and _INI methods.
346 */
347 if (!(Flags & ACPI_NO_DEVICE_INIT))
348 {
349 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
350 "[Init] Initializing ACPI Devices\n"));
351
352 Status = AcpiNsInitializeDevices ();
353 if (ACPI_FAILURE (Status))
354 {
355 return_ACPI_STATUS (Status);
356 }
357 }
358
359 /*
360 * Empty the caches (delete the cached objects) on the assumption that
361 * the table load filled them up more than they will be at runtime --
362 * thus wasting non-paged memory.
363 */
364 Status = AcpiPurgeCachedObjects ();
365
366 AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK;
367 return_ACPI_STATUS (Status);
368 }
369
370 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeObjects)
371