utxfinit.c revision 281075 
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 */
57void
58AeDoObjectOverrides (
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
75ACPI_STATUS
76AcpiInitializeSubsystem (
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    /* If configured, initialize the AML debugger */
136
137#ifdef ACPI_DEBUGGER
138    Status = AcpiDbInitialize ();
139    if (ACPI_FAILURE (Status))
140    {
141        ACPI_EXCEPTION ((AE_INFO, Status, "During Debugger initialization"));
142        return_ACPI_STATUS (Status);
143    }
144#endif
145
146    return_ACPI_STATUS (AE_OK);
147}
148
149ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeSubsystem)
150
151
152/*******************************************************************************
153 *
154 * FUNCTION:    AcpiEnableSubsystem
155 *
156 * PARAMETERS:  Flags               - Init/enable Options
157 *
158 * RETURN:      Status
159 *
160 * DESCRIPTION: Completes the subsystem initialization including hardware.
161 *              Puts system into ACPI mode if it isn't already.
162 *
163 ******************************************************************************/
164
165ACPI_STATUS
166AcpiEnableSubsystem (
167    UINT32                  Flags)
168{
169    ACPI_STATUS             Status = AE_OK;
170
171
172    ACPI_FUNCTION_TRACE (AcpiEnableSubsystem);
173
174
175#if (!ACPI_REDUCED_HARDWARE)
176
177    /* Enable ACPI mode */
178
179    if (!(Flags & ACPI_NO_ACPI_ENABLE))
180    {
181        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));
182
183        AcpiGbl_OriginalMode = AcpiHwGetMode();
184
185        Status = AcpiEnable ();
186        if (ACPI_FAILURE (Status))
187        {
188            ACPI_WARNING ((AE_INFO, "AcpiEnable failed"));
189            return_ACPI_STATUS (Status);
190        }
191    }
192
193    /*
194     * Obtain a permanent mapping for the FACS. This is required for the
195     * Global Lock and the Firmware Waking Vector
196     */
197    Status = AcpiTbInitializeFacs ();
198    if (ACPI_FAILURE (Status))
199    {
200        ACPI_WARNING ((AE_INFO, "Could not map the FACS table"));
201        return_ACPI_STATUS (Status);
202    }
203
204#endif /* !ACPI_REDUCED_HARDWARE */
205
206    /*
207     * Install the default OpRegion handlers. These are installed unless
208     * other handlers have already been installed via the
209     * InstallAddressSpaceHandler interface.
210     */
211    if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
212    {
213        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
214            "[Init] Installing default address space handlers\n"));
215
216        Status = AcpiEvInstallRegionHandlers ();
217        if (ACPI_FAILURE (Status))
218        {
219            return_ACPI_STATUS (Status);
220        }
221    }
222
223#if (!ACPI_REDUCED_HARDWARE)
224    /*
225     * Initialize ACPI Event handling (Fixed and General Purpose)
226     *
227     * Note1: We must have the hardware and events initialized before we can
228     * execute any control methods safely. Any control method can require
229     * ACPI hardware support, so the hardware must be fully initialized before
230     * any method execution!
231     *
232     * Note2: Fixed events are initialized and enabled here. GPEs are
233     * initialized, but cannot be enabled until after the hardware is
234     * completely initialized (SCI and GlobalLock activated) and the various
235     * initialization control methods are run (_REG, _STA, _INI) on the
236     * entire namespace.
237     */
238    if (!(Flags & ACPI_NO_EVENT_INIT))
239    {
240        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
241            "[Init] Initializing ACPI events\n"));
242
243        Status = AcpiEvInitializeEvents ();
244        if (ACPI_FAILURE (Status))
245        {
246            return_ACPI_STATUS (Status);
247        }
248    }
249
250    /*
251     * Install the SCI handler and Global Lock handler. This completes the
252     * hardware initialization.
253     */
254    if (!(Flags & ACPI_NO_HANDLER_INIT))
255    {
256        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
257            "[Init] Installing SCI/GL handlers\n"));
258
259        Status = AcpiEvInstallXruptHandlers ();
260        if (ACPI_FAILURE (Status))
261        {
262            return_ACPI_STATUS (Status);
263        }
264    }
265
266#endif /* !ACPI_REDUCED_HARDWARE */
267
268    return_ACPI_STATUS (Status);
269}
270
271ACPI_EXPORT_SYMBOL_INIT (AcpiEnableSubsystem)
272
273
274/*******************************************************************************
275 *
276 * FUNCTION:    AcpiInitializeObjects
277 *
278 * PARAMETERS:  Flags               - Init/enable Options
279 *
280 * RETURN:      Status
281 *
282 * DESCRIPTION: Completes namespace initialization by initializing device
283 *              objects and executing AML code for Regions, buffers, etc.
284 *
285 ******************************************************************************/
286
287ACPI_STATUS
288AcpiInitializeObjects (
289    UINT32                  Flags)
290{
291    ACPI_STATUS             Status = AE_OK;
292
293
294    ACPI_FUNCTION_TRACE (AcpiInitializeObjects);
295
296
297    /*
298     * Run all _REG methods
299     *
300     * Note: Any objects accessed by the _REG methods will be automatically
301     * initialized, even if they contain executable AML (see the call to
302     * AcpiNsInitializeObjects below).
303     */
304    if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
305    {
306        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
307            "[Init] Executing _REG OpRegion methods\n"));
308
309        Status = AcpiEvInitializeOpRegions ();
310        if (ACPI_FAILURE (Status))
311        {
312            return_ACPI_STATUS (Status);
313        }
314    }
315
316#ifdef ACPI_EXEC_APP
317    /*
318     * This call implements the "initialization file" option for AcpiExec.
319     * This is the precise point that we want to perform the overrides.
320     */
321    AeDoObjectOverrides ();
322#endif
323
324    /*
325     * Execute any module-level code that was detected during the table load
326     * phase. Although illegal since ACPI 2.0, there are many machines that
327     * contain this type of code. Each block of detected executable AML code
328     * outside of any control method is wrapped with a temporary control
329     * method object and placed on a global list. The methods on this list
330     * are executed below.
331     */
332    AcpiNsExecModuleCodeList ();
333
334    /*
335     * Initialize the objects that remain uninitialized. This runs the
336     * executable AML that may be part of the declaration of these objects:
337     * OperationRegions, BufferFields, Buffers, and Packages.
338     */
339    if (!(Flags & ACPI_NO_OBJECT_INIT))
340    {
341        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
342            "[Init] Completing Initialization of ACPI Objects\n"));
343
344        Status = AcpiNsInitializeObjects ();
345        if (ACPI_FAILURE (Status))
346        {
347            return_ACPI_STATUS (Status);
348        }
349    }
350
351    /*
352     * Initialize all device objects in the namespace. This runs the device
353     * _STA and _INI methods.
354     */
355    if (!(Flags & ACPI_NO_DEVICE_INIT))
356    {
357        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
358            "[Init] Initializing ACPI Devices\n"));
359
360        Status = AcpiNsInitializeDevices ();
361        if (ACPI_FAILURE (Status))
362        {
363            return_ACPI_STATUS (Status);
364        }
365    }
366
367    /*
368     * Empty the caches (delete the cached objects) on the assumption that
369     * the table load filled them up more than they will be at runtime --
370     * thus wasting non-paged memory.
371     */
372    Status = AcpiPurgeCachedObjects ();
373
374    AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK;
375    return_ACPI_STATUS (Status);
376}
377
378ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeObjects)
379