xref: /minix3/minix/drivers/power/acpi/namespace/nsinit.c (revision 29492bb71c7148a089a5afafa0c99409161218df)
1433d6423SLionel Sambuc /******************************************************************************
2433d6423SLionel Sambuc  *
3433d6423SLionel Sambuc  * Module Name: nsinit - namespace initialization
4433d6423SLionel Sambuc  *
5433d6423SLionel Sambuc  *****************************************************************************/
6433d6423SLionel Sambuc 
7*29492bb7SDavid van Moolenbroek /*
8*29492bb7SDavid van Moolenbroek  * Copyright (C) 2000 - 2014, Intel Corp.
9433d6423SLionel Sambuc  * All rights reserved.
10433d6423SLionel Sambuc  *
11*29492bb7SDavid van Moolenbroek  * Redistribution and use in source and binary forms, with or without
12*29492bb7SDavid van Moolenbroek  * modification, are permitted provided that the following conditions
13*29492bb7SDavid van Moolenbroek  * are met:
14*29492bb7SDavid van Moolenbroek  * 1. Redistributions of source code must retain the above copyright
15*29492bb7SDavid van Moolenbroek  *    notice, this list of conditions, and the following disclaimer,
16*29492bb7SDavid van Moolenbroek  *    without modification.
17*29492bb7SDavid van Moolenbroek  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18*29492bb7SDavid van Moolenbroek  *    substantially similar to the "NO WARRANTY" disclaimer below
19*29492bb7SDavid van Moolenbroek  *    ("Disclaimer") and any redistribution must be conditioned upon
20*29492bb7SDavid van Moolenbroek  *    including a substantially similar Disclaimer requirement for further
21*29492bb7SDavid van Moolenbroek  *    binary redistribution.
22*29492bb7SDavid van Moolenbroek  * 3. Neither the names of the above-listed copyright holders nor the names
23*29492bb7SDavid van Moolenbroek  *    of any contributors may be used to endorse or promote products derived
24*29492bb7SDavid van Moolenbroek  *    from this software without specific prior written permission.
25433d6423SLionel Sambuc  *
26*29492bb7SDavid van Moolenbroek  * Alternatively, this software may be distributed under the terms of the
27*29492bb7SDavid van Moolenbroek  * GNU General Public License ("GPL") version 2 as published by the Free
28*29492bb7SDavid van Moolenbroek  * Software Foundation.
29433d6423SLionel Sambuc  *
30*29492bb7SDavid van Moolenbroek  * NO WARRANTY
31*29492bb7SDavid van Moolenbroek  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32*29492bb7SDavid van Moolenbroek  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33*29492bb7SDavid van Moolenbroek  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34*29492bb7SDavid van Moolenbroek  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35*29492bb7SDavid van Moolenbroek  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36*29492bb7SDavid van Moolenbroek  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37*29492bb7SDavid van Moolenbroek  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38*29492bb7SDavid van Moolenbroek  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39*29492bb7SDavid van Moolenbroek  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40*29492bb7SDavid van Moolenbroek  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41*29492bb7SDavid van Moolenbroek  * POSSIBILITY OF SUCH DAMAGES.
42*29492bb7SDavid van Moolenbroek  */
43433d6423SLionel Sambuc 
44433d6423SLionel Sambuc #include "acpi.h"
45433d6423SLionel Sambuc #include "accommon.h"
46433d6423SLionel Sambuc #include "acnamesp.h"
47433d6423SLionel Sambuc #include "acdispat.h"
48433d6423SLionel Sambuc #include "acinterp.h"
49433d6423SLionel Sambuc 
50433d6423SLionel Sambuc #define _COMPONENT          ACPI_NAMESPACE
51433d6423SLionel Sambuc         ACPI_MODULE_NAME    ("nsinit")
52433d6423SLionel Sambuc 
53433d6423SLionel Sambuc /* Local prototypes */
54433d6423SLionel Sambuc 
55433d6423SLionel Sambuc static ACPI_STATUS
56433d6423SLionel Sambuc AcpiNsInitOneObject (
57433d6423SLionel Sambuc     ACPI_HANDLE             ObjHandle,
58433d6423SLionel Sambuc     UINT32                  Level,
59433d6423SLionel Sambuc     void                    *Context,
60433d6423SLionel Sambuc     void                    **ReturnValue);
61433d6423SLionel Sambuc 
62433d6423SLionel Sambuc static ACPI_STATUS
63433d6423SLionel Sambuc AcpiNsInitOneDevice (
64433d6423SLionel Sambuc     ACPI_HANDLE             ObjHandle,
65433d6423SLionel Sambuc     UINT32                  NestingLevel,
66433d6423SLionel Sambuc     void                    *Context,
67433d6423SLionel Sambuc     void                    **ReturnValue);
68433d6423SLionel Sambuc 
69433d6423SLionel Sambuc static ACPI_STATUS
70433d6423SLionel Sambuc AcpiNsFindIniMethods (
71433d6423SLionel Sambuc     ACPI_HANDLE             ObjHandle,
72433d6423SLionel Sambuc     UINT32                  NestingLevel,
73433d6423SLionel Sambuc     void                    *Context,
74433d6423SLionel Sambuc     void                    **ReturnValue);
75433d6423SLionel Sambuc 
76433d6423SLionel Sambuc 
77433d6423SLionel Sambuc /*******************************************************************************
78433d6423SLionel Sambuc  *
79433d6423SLionel Sambuc  * FUNCTION:    AcpiNsInitializeObjects
80433d6423SLionel Sambuc  *
81433d6423SLionel Sambuc  * PARAMETERS:  None
82433d6423SLionel Sambuc  *
83433d6423SLionel Sambuc  * RETURN:      Status
84433d6423SLionel Sambuc  *
85433d6423SLionel Sambuc  * DESCRIPTION: Walk the entire namespace and perform any necessary
86433d6423SLionel Sambuc  *              initialization on the objects found therein
87433d6423SLionel Sambuc  *
88433d6423SLionel Sambuc  ******************************************************************************/
89433d6423SLionel Sambuc 
90433d6423SLionel Sambuc ACPI_STATUS
AcpiNsInitializeObjects(void)91433d6423SLionel Sambuc AcpiNsInitializeObjects (
92433d6423SLionel Sambuc     void)
93433d6423SLionel Sambuc {
94433d6423SLionel Sambuc     ACPI_STATUS             Status;
95433d6423SLionel Sambuc     ACPI_INIT_WALK_INFO     Info;
96433d6423SLionel Sambuc 
97433d6423SLionel Sambuc 
98433d6423SLionel Sambuc     ACPI_FUNCTION_TRACE (NsInitializeObjects);
99433d6423SLionel Sambuc 
100433d6423SLionel Sambuc 
101433d6423SLionel Sambuc     ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
102433d6423SLionel Sambuc         "**** Starting initialization of namespace objects ****\n"));
103433d6423SLionel Sambuc     ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
104*29492bb7SDavid van Moolenbroek         "Completing Region/Field/Buffer/Package initialization:\n"));
105433d6423SLionel Sambuc 
106433d6423SLionel Sambuc     /* Set all init info to zero */
107433d6423SLionel Sambuc 
108433d6423SLionel Sambuc     ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
109433d6423SLionel Sambuc 
110433d6423SLionel Sambuc     /* Walk entire namespace from the supplied root */
111433d6423SLionel Sambuc 
112433d6423SLionel Sambuc     Status = AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
113433d6423SLionel Sambuc                 ACPI_UINT32_MAX, AcpiNsInitOneObject, NULL,
114433d6423SLionel Sambuc                 &Info, NULL);
115433d6423SLionel Sambuc     if (ACPI_FAILURE (Status))
116433d6423SLionel Sambuc     {
117433d6423SLionel Sambuc         ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
118433d6423SLionel Sambuc     }
119433d6423SLionel Sambuc 
120433d6423SLionel Sambuc     ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
121*29492bb7SDavid van Moolenbroek         "    Initialized %u/%u Regions %u/%u Fields %u/%u "
122433d6423SLionel Sambuc         "Buffers %u/%u Packages (%u nodes)\n",
123433d6423SLionel Sambuc         Info.OpRegionInit,  Info.OpRegionCount,
124433d6423SLionel Sambuc         Info.FieldInit,     Info.FieldCount,
125433d6423SLionel Sambuc         Info.BufferInit,    Info.BufferCount,
126433d6423SLionel Sambuc         Info.PackageInit,   Info.PackageCount, Info.ObjectCount));
127433d6423SLionel Sambuc 
128433d6423SLionel Sambuc     ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
129*29492bb7SDavid van Moolenbroek         "%u Control Methods found\n%u Op Regions found\n",
130*29492bb7SDavid van Moolenbroek         Info.MethodCount, Info.OpRegionCount));
131433d6423SLionel Sambuc 
132433d6423SLionel Sambuc     return_ACPI_STATUS (AE_OK);
133433d6423SLionel Sambuc }
134433d6423SLionel Sambuc 
135433d6423SLionel Sambuc 
136433d6423SLionel Sambuc /*******************************************************************************
137433d6423SLionel Sambuc  *
138433d6423SLionel Sambuc  * FUNCTION:    AcpiNsInitializeDevices
139433d6423SLionel Sambuc  *
140433d6423SLionel Sambuc  * PARAMETERS:  None
141433d6423SLionel Sambuc  *
142433d6423SLionel Sambuc  * RETURN:      ACPI_STATUS
143433d6423SLionel Sambuc  *
144433d6423SLionel Sambuc  * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices.
145433d6423SLionel Sambuc  *              This means running _INI on all present devices.
146433d6423SLionel Sambuc  *
147433d6423SLionel Sambuc  *              Note: We install PCI config space handler on region access,
148433d6423SLionel Sambuc  *              not here.
149433d6423SLionel Sambuc  *
150433d6423SLionel Sambuc  ******************************************************************************/
151433d6423SLionel Sambuc 
152433d6423SLionel Sambuc ACPI_STATUS
AcpiNsInitializeDevices(void)153433d6423SLionel Sambuc AcpiNsInitializeDevices (
154433d6423SLionel Sambuc     void)
155433d6423SLionel Sambuc {
156433d6423SLionel Sambuc     ACPI_STATUS             Status;
157433d6423SLionel Sambuc     ACPI_DEVICE_WALK_INFO   Info;
158433d6423SLionel Sambuc 
159433d6423SLionel Sambuc 
160433d6423SLionel Sambuc     ACPI_FUNCTION_TRACE (NsInitializeDevices);
161433d6423SLionel Sambuc 
162433d6423SLionel Sambuc 
163433d6423SLionel Sambuc     /* Init counters */
164433d6423SLionel Sambuc 
165433d6423SLionel Sambuc     Info.DeviceCount = 0;
166433d6423SLionel Sambuc     Info.Num_STA = 0;
167433d6423SLionel Sambuc     Info.Num_INI = 0;
168433d6423SLionel Sambuc 
169433d6423SLionel Sambuc     ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
170433d6423SLionel Sambuc         "Initializing Device/Processor/Thermal objects "
171*29492bb7SDavid van Moolenbroek         "and executing _INI/_STA methods:\n"));
172433d6423SLionel Sambuc 
173433d6423SLionel Sambuc     /* Tree analysis: find all subtrees that contain _INI methods */
174433d6423SLionel Sambuc 
175433d6423SLionel Sambuc     Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
176433d6423SLionel Sambuc                 ACPI_UINT32_MAX, FALSE, AcpiNsFindIniMethods, NULL, &Info, NULL);
177433d6423SLionel Sambuc     if (ACPI_FAILURE (Status))
178433d6423SLionel Sambuc     {
179433d6423SLionel Sambuc         goto ErrorExit;
180433d6423SLionel Sambuc     }
181433d6423SLionel Sambuc 
182433d6423SLionel Sambuc     /* Allocate the evaluation information block */
183433d6423SLionel Sambuc 
184433d6423SLionel Sambuc     Info.EvaluateInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
185433d6423SLionel Sambuc     if (!Info.EvaluateInfo)
186433d6423SLionel Sambuc     {
187433d6423SLionel Sambuc         Status = AE_NO_MEMORY;
188433d6423SLionel Sambuc         goto ErrorExit;
189433d6423SLionel Sambuc     }
190433d6423SLionel Sambuc 
191433d6423SLionel Sambuc     /*
192433d6423SLionel Sambuc      * Execute the "global" _INI method that may appear at the root. This
193433d6423SLionel Sambuc      * support is provided for Windows compatibility (Vista+) and is not
194433d6423SLionel Sambuc      * part of the ACPI specification.
195433d6423SLionel Sambuc      */
196433d6423SLionel Sambuc     Info.EvaluateInfo->PrefixNode = AcpiGbl_RootNode;
197*29492bb7SDavid van Moolenbroek     Info.EvaluateInfo->RelativePathname = METHOD_NAME__INI;
198433d6423SLionel Sambuc     Info.EvaluateInfo->Parameters = NULL;
199433d6423SLionel Sambuc     Info.EvaluateInfo->Flags = ACPI_IGNORE_RETURN_VALUE;
200433d6423SLionel Sambuc 
201433d6423SLionel Sambuc     Status = AcpiNsEvaluate (Info.EvaluateInfo);
202433d6423SLionel Sambuc     if (ACPI_SUCCESS (Status))
203433d6423SLionel Sambuc     {
204433d6423SLionel Sambuc         Info.Num_INI++;
205433d6423SLionel Sambuc     }
206433d6423SLionel Sambuc 
207433d6423SLionel Sambuc     /* Walk namespace to execute all _INIs on present devices */
208433d6423SLionel Sambuc 
209433d6423SLionel Sambuc     Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
210433d6423SLionel Sambuc                 ACPI_UINT32_MAX, FALSE, AcpiNsInitOneDevice, NULL, &Info, NULL);
211433d6423SLionel Sambuc 
212433d6423SLionel Sambuc     /*
213433d6423SLionel Sambuc      * Any _OSI requests should be completed by now. If the BIOS has
214433d6423SLionel Sambuc      * requested any Windows OSI strings, we will always truncate
215433d6423SLionel Sambuc      * I/O addresses to 16 bits -- for Windows compatibility.
216433d6423SLionel Sambuc      */
217433d6423SLionel Sambuc     if (AcpiGbl_OsiData >= ACPI_OSI_WIN_2000)
218433d6423SLionel Sambuc     {
219433d6423SLionel Sambuc         AcpiGbl_TruncateIoAddresses = TRUE;
220433d6423SLionel Sambuc     }
221433d6423SLionel Sambuc 
222433d6423SLionel Sambuc     ACPI_FREE (Info.EvaluateInfo);
223433d6423SLionel Sambuc     if (ACPI_FAILURE (Status))
224433d6423SLionel Sambuc     {
225433d6423SLionel Sambuc         goto ErrorExit;
226433d6423SLionel Sambuc     }
227433d6423SLionel Sambuc 
228433d6423SLionel Sambuc     ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
229*29492bb7SDavid van Moolenbroek         "    Executed %u _INI methods requiring %u _STA executions "
230433d6423SLionel Sambuc         "(examined %u objects)\n",
231433d6423SLionel Sambuc         Info.Num_INI, Info.Num_STA, Info.DeviceCount));
232433d6423SLionel Sambuc 
233433d6423SLionel Sambuc     return_ACPI_STATUS (Status);
234433d6423SLionel Sambuc 
235433d6423SLionel Sambuc 
236433d6423SLionel Sambuc ErrorExit:
237433d6423SLionel Sambuc     ACPI_EXCEPTION ((AE_INFO, Status, "During device initialization"));
238433d6423SLionel Sambuc     return_ACPI_STATUS (Status);
239433d6423SLionel Sambuc }
240433d6423SLionel Sambuc 
241433d6423SLionel Sambuc 
242433d6423SLionel Sambuc /*******************************************************************************
243433d6423SLionel Sambuc  *
244433d6423SLionel Sambuc  * FUNCTION:    AcpiNsInitOneObject
245433d6423SLionel Sambuc  *
246433d6423SLionel Sambuc  * PARAMETERS:  ObjHandle       - Node
247433d6423SLionel Sambuc  *              Level           - Current nesting level
248433d6423SLionel Sambuc  *              Context         - Points to a init info struct
249433d6423SLionel Sambuc  *              ReturnValue     - Not used
250433d6423SLionel Sambuc  *
251433d6423SLionel Sambuc  * RETURN:      Status
252433d6423SLionel Sambuc  *
253433d6423SLionel Sambuc  * DESCRIPTION: Callback from AcpiWalkNamespace. Invoked for every object
254433d6423SLionel Sambuc  *              within the  namespace.
255433d6423SLionel Sambuc  *
256433d6423SLionel Sambuc  *              Currently, the only objects that require initialization are:
257433d6423SLionel Sambuc  *              1) Methods
258433d6423SLionel Sambuc  *              2) Op Regions
259433d6423SLionel Sambuc  *
260433d6423SLionel Sambuc  ******************************************************************************/
261433d6423SLionel Sambuc 
262433d6423SLionel Sambuc static ACPI_STATUS
AcpiNsInitOneObject(ACPI_HANDLE ObjHandle,UINT32 Level,void * Context,void ** ReturnValue)263433d6423SLionel Sambuc AcpiNsInitOneObject (
264433d6423SLionel Sambuc     ACPI_HANDLE             ObjHandle,
265433d6423SLionel Sambuc     UINT32                  Level,
266433d6423SLionel Sambuc     void                    *Context,
267433d6423SLionel Sambuc     void                    **ReturnValue)
268433d6423SLionel Sambuc {
269433d6423SLionel Sambuc     ACPI_OBJECT_TYPE        Type;
270433d6423SLionel Sambuc     ACPI_STATUS             Status = AE_OK;
271433d6423SLionel Sambuc     ACPI_INIT_WALK_INFO     *Info = (ACPI_INIT_WALK_INFO *) Context;
272433d6423SLionel Sambuc     ACPI_NAMESPACE_NODE     *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
273433d6423SLionel Sambuc     ACPI_OPERAND_OBJECT     *ObjDesc;
274433d6423SLionel Sambuc 
275433d6423SLionel Sambuc 
276433d6423SLionel Sambuc     ACPI_FUNCTION_NAME (NsInitOneObject);
277433d6423SLionel Sambuc 
278433d6423SLionel Sambuc 
279433d6423SLionel Sambuc     Info->ObjectCount++;
280433d6423SLionel Sambuc 
281433d6423SLionel Sambuc     /* And even then, we are only interested in a few object types */
282433d6423SLionel Sambuc 
283433d6423SLionel Sambuc     Type = AcpiNsGetType (ObjHandle);
284433d6423SLionel Sambuc     ObjDesc = AcpiNsGetAttachedObject (Node);
285433d6423SLionel Sambuc     if (!ObjDesc)
286433d6423SLionel Sambuc     {
287433d6423SLionel Sambuc         return (AE_OK);
288433d6423SLionel Sambuc     }
289433d6423SLionel Sambuc 
290433d6423SLionel Sambuc     /* Increment counters for object types we are looking for */
291433d6423SLionel Sambuc 
292433d6423SLionel Sambuc     switch (Type)
293433d6423SLionel Sambuc     {
294433d6423SLionel Sambuc     case ACPI_TYPE_REGION:
295*29492bb7SDavid van Moolenbroek 
296433d6423SLionel Sambuc         Info->OpRegionCount++;
297433d6423SLionel Sambuc         break;
298433d6423SLionel Sambuc 
299433d6423SLionel Sambuc     case ACPI_TYPE_BUFFER_FIELD:
300*29492bb7SDavid van Moolenbroek 
301433d6423SLionel Sambuc         Info->FieldCount++;
302433d6423SLionel Sambuc         break;
303433d6423SLionel Sambuc 
304433d6423SLionel Sambuc     case ACPI_TYPE_LOCAL_BANK_FIELD:
305*29492bb7SDavid van Moolenbroek 
306433d6423SLionel Sambuc         Info->FieldCount++;
307433d6423SLionel Sambuc         break;
308433d6423SLionel Sambuc 
309433d6423SLionel Sambuc     case ACPI_TYPE_BUFFER:
310*29492bb7SDavid van Moolenbroek 
311433d6423SLionel Sambuc         Info->BufferCount++;
312433d6423SLionel Sambuc         break;
313433d6423SLionel Sambuc 
314433d6423SLionel Sambuc     case ACPI_TYPE_PACKAGE:
315*29492bb7SDavid van Moolenbroek 
316433d6423SLionel Sambuc         Info->PackageCount++;
317433d6423SLionel Sambuc         break;
318433d6423SLionel Sambuc 
319433d6423SLionel Sambuc     default:
320433d6423SLionel Sambuc 
321433d6423SLionel Sambuc         /* No init required, just exit now */
322*29492bb7SDavid van Moolenbroek 
323433d6423SLionel Sambuc         return (AE_OK);
324433d6423SLionel Sambuc     }
325433d6423SLionel Sambuc 
326433d6423SLionel Sambuc     /* If the object is already initialized, nothing else to do */
327433d6423SLionel Sambuc 
328433d6423SLionel Sambuc     if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
329433d6423SLionel Sambuc     {
330433d6423SLionel Sambuc         return (AE_OK);
331433d6423SLionel Sambuc     }
332433d6423SLionel Sambuc 
333433d6423SLionel Sambuc     /* Must lock the interpreter before executing AML code */
334433d6423SLionel Sambuc 
335433d6423SLionel Sambuc     AcpiExEnterInterpreter ();
336433d6423SLionel Sambuc 
337433d6423SLionel Sambuc     /*
338433d6423SLionel Sambuc      * Each of these types can contain executable AML code within the
339433d6423SLionel Sambuc      * declaration.
340433d6423SLionel Sambuc      */
341433d6423SLionel Sambuc     switch (Type)
342433d6423SLionel Sambuc     {
343433d6423SLionel Sambuc     case ACPI_TYPE_REGION:
344433d6423SLionel Sambuc 
345433d6423SLionel Sambuc         Info->OpRegionInit++;
346433d6423SLionel Sambuc         Status = AcpiDsGetRegionArguments (ObjDesc);
347433d6423SLionel Sambuc         break;
348433d6423SLionel Sambuc 
349433d6423SLionel Sambuc     case ACPI_TYPE_BUFFER_FIELD:
350433d6423SLionel Sambuc 
351433d6423SLionel Sambuc         Info->FieldInit++;
352433d6423SLionel Sambuc         Status = AcpiDsGetBufferFieldArguments (ObjDesc);
353433d6423SLionel Sambuc         break;
354433d6423SLionel Sambuc 
355433d6423SLionel Sambuc     case ACPI_TYPE_LOCAL_BANK_FIELD:
356433d6423SLionel Sambuc 
357433d6423SLionel Sambuc         Info->FieldInit++;
358433d6423SLionel Sambuc         Status = AcpiDsGetBankFieldArguments (ObjDesc);
359433d6423SLionel Sambuc         break;
360433d6423SLionel Sambuc 
361433d6423SLionel Sambuc     case ACPI_TYPE_BUFFER:
362433d6423SLionel Sambuc 
363433d6423SLionel Sambuc         Info->BufferInit++;
364433d6423SLionel Sambuc         Status = AcpiDsGetBufferArguments (ObjDesc);
365433d6423SLionel Sambuc         break;
366433d6423SLionel Sambuc 
367433d6423SLionel Sambuc     case ACPI_TYPE_PACKAGE:
368433d6423SLionel Sambuc 
369433d6423SLionel Sambuc         Info->PackageInit++;
370433d6423SLionel Sambuc         Status = AcpiDsGetPackageArguments (ObjDesc);
371433d6423SLionel Sambuc         break;
372433d6423SLionel Sambuc 
373433d6423SLionel Sambuc     default:
374*29492bb7SDavid van Moolenbroek 
375433d6423SLionel Sambuc         /* No other types can get here */
376*29492bb7SDavid van Moolenbroek 
377433d6423SLionel Sambuc         break;
378433d6423SLionel Sambuc     }
379433d6423SLionel Sambuc 
380433d6423SLionel Sambuc     if (ACPI_FAILURE (Status))
381433d6423SLionel Sambuc     {
382433d6423SLionel Sambuc         ACPI_EXCEPTION ((AE_INFO, Status,
383433d6423SLionel Sambuc             "Could not execute arguments for [%4.4s] (%s)",
384433d6423SLionel Sambuc             AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Type)));
385433d6423SLionel Sambuc     }
386433d6423SLionel Sambuc 
387433d6423SLionel Sambuc     /*
388433d6423SLionel Sambuc      * We ignore errors from above, and always return OK, since we don't want
389433d6423SLionel Sambuc      * to abort the walk on any single error.
390433d6423SLionel Sambuc      */
391433d6423SLionel Sambuc     AcpiExExitInterpreter ();
392433d6423SLionel Sambuc     return (AE_OK);
393433d6423SLionel Sambuc }
394433d6423SLionel Sambuc 
395433d6423SLionel Sambuc 
396433d6423SLionel Sambuc /*******************************************************************************
397433d6423SLionel Sambuc  *
398433d6423SLionel Sambuc  * FUNCTION:    AcpiNsFindIniMethods
399433d6423SLionel Sambuc  *
400433d6423SLionel Sambuc  * PARAMETERS:  ACPI_WALK_CALLBACK
401433d6423SLionel Sambuc  *
402433d6423SLionel Sambuc  * RETURN:      ACPI_STATUS
403433d6423SLionel Sambuc  *
404433d6423SLionel Sambuc  * DESCRIPTION: Called during namespace walk. Finds objects named _INI under
405433d6423SLionel Sambuc  *              device/processor/thermal objects, and marks the entire subtree
406433d6423SLionel Sambuc  *              with a SUBTREE_HAS_INI flag. This flag is used during the
407433d6423SLionel Sambuc  *              subsequent device initialization walk to avoid entire subtrees
408433d6423SLionel Sambuc  *              that do not contain an _INI.
409433d6423SLionel Sambuc  *
410433d6423SLionel Sambuc  ******************************************************************************/
411433d6423SLionel Sambuc 
412433d6423SLionel Sambuc static ACPI_STATUS
AcpiNsFindIniMethods(ACPI_HANDLE ObjHandle,UINT32 NestingLevel,void * Context,void ** ReturnValue)413433d6423SLionel Sambuc AcpiNsFindIniMethods (
414433d6423SLionel Sambuc     ACPI_HANDLE             ObjHandle,
415433d6423SLionel Sambuc     UINT32                  NestingLevel,
416433d6423SLionel Sambuc     void                    *Context,
417433d6423SLionel Sambuc     void                    **ReturnValue)
418433d6423SLionel Sambuc {
419433d6423SLionel Sambuc     ACPI_DEVICE_WALK_INFO   *Info = ACPI_CAST_PTR (ACPI_DEVICE_WALK_INFO, Context);
420433d6423SLionel Sambuc     ACPI_NAMESPACE_NODE     *Node;
421433d6423SLionel Sambuc     ACPI_NAMESPACE_NODE     *ParentNode;
422433d6423SLionel Sambuc 
423433d6423SLionel Sambuc 
424433d6423SLionel Sambuc     /* Keep count of device/processor/thermal objects */
425433d6423SLionel Sambuc 
426433d6423SLionel Sambuc     Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
427433d6423SLionel Sambuc     if ((Node->Type == ACPI_TYPE_DEVICE)    ||
428433d6423SLionel Sambuc         (Node->Type == ACPI_TYPE_PROCESSOR) ||
429433d6423SLionel Sambuc         (Node->Type == ACPI_TYPE_THERMAL))
430433d6423SLionel Sambuc     {
431433d6423SLionel Sambuc         Info->DeviceCount++;
432433d6423SLionel Sambuc         return (AE_OK);
433433d6423SLionel Sambuc     }
434433d6423SLionel Sambuc 
435433d6423SLionel Sambuc     /* We are only looking for methods named _INI */
436433d6423SLionel Sambuc 
437433d6423SLionel Sambuc     if (!ACPI_COMPARE_NAME (Node->Name.Ascii, METHOD_NAME__INI))
438433d6423SLionel Sambuc     {
439433d6423SLionel Sambuc         return (AE_OK);
440433d6423SLionel Sambuc     }
441433d6423SLionel Sambuc 
442433d6423SLionel Sambuc     /*
443433d6423SLionel Sambuc      * The only _INI methods that we care about are those that are
444433d6423SLionel Sambuc      * present under Device, Processor, and Thermal objects.
445433d6423SLionel Sambuc      */
446433d6423SLionel Sambuc     ParentNode = Node->Parent;
447433d6423SLionel Sambuc     switch (ParentNode->Type)
448433d6423SLionel Sambuc     {
449433d6423SLionel Sambuc     case ACPI_TYPE_DEVICE:
450433d6423SLionel Sambuc     case ACPI_TYPE_PROCESSOR:
451433d6423SLionel Sambuc     case ACPI_TYPE_THERMAL:
452433d6423SLionel Sambuc 
453433d6423SLionel Sambuc         /* Mark parent and bubble up the INI present flag to the root */
454433d6423SLionel Sambuc 
455433d6423SLionel Sambuc         while (ParentNode)
456433d6423SLionel Sambuc         {
457433d6423SLionel Sambuc             ParentNode->Flags |= ANOBJ_SUBTREE_HAS_INI;
458433d6423SLionel Sambuc             ParentNode = ParentNode->Parent;
459433d6423SLionel Sambuc         }
460433d6423SLionel Sambuc         break;
461433d6423SLionel Sambuc 
462433d6423SLionel Sambuc     default:
463*29492bb7SDavid van Moolenbroek 
464433d6423SLionel Sambuc         break;
465433d6423SLionel Sambuc     }
466433d6423SLionel Sambuc 
467433d6423SLionel Sambuc     return (AE_OK);
468433d6423SLionel Sambuc }
469433d6423SLionel Sambuc 
470433d6423SLionel Sambuc 
471433d6423SLionel Sambuc /*******************************************************************************
472433d6423SLionel Sambuc  *
473433d6423SLionel Sambuc  * FUNCTION:    AcpiNsInitOneDevice
474433d6423SLionel Sambuc  *
475433d6423SLionel Sambuc  * PARAMETERS:  ACPI_WALK_CALLBACK
476433d6423SLionel Sambuc  *
477433d6423SLionel Sambuc  * RETURN:      ACPI_STATUS
478433d6423SLionel Sambuc  *
479433d6423SLionel Sambuc  * DESCRIPTION: This is called once per device soon after ACPI is enabled
480433d6423SLionel Sambuc  *              to initialize each device. It determines if the device is
481433d6423SLionel Sambuc  *              present, and if so, calls _INI.
482433d6423SLionel Sambuc  *
483433d6423SLionel Sambuc  ******************************************************************************/
484433d6423SLionel Sambuc 
485433d6423SLionel Sambuc static ACPI_STATUS
AcpiNsInitOneDevice(ACPI_HANDLE ObjHandle,UINT32 NestingLevel,void * Context,void ** ReturnValue)486433d6423SLionel Sambuc AcpiNsInitOneDevice (
487433d6423SLionel Sambuc     ACPI_HANDLE             ObjHandle,
488433d6423SLionel Sambuc     UINT32                  NestingLevel,
489433d6423SLionel Sambuc     void                    *Context,
490433d6423SLionel Sambuc     void                    **ReturnValue)
491433d6423SLionel Sambuc {
492433d6423SLionel Sambuc     ACPI_DEVICE_WALK_INFO   *WalkInfo = ACPI_CAST_PTR (ACPI_DEVICE_WALK_INFO, Context);
493433d6423SLionel Sambuc     ACPI_EVALUATE_INFO      *Info = WalkInfo->EvaluateInfo;
494433d6423SLionel Sambuc     UINT32                  Flags;
495433d6423SLionel Sambuc     ACPI_STATUS             Status;
496433d6423SLionel Sambuc     ACPI_NAMESPACE_NODE     *DeviceNode;
497433d6423SLionel Sambuc 
498433d6423SLionel Sambuc 
499433d6423SLionel Sambuc     ACPI_FUNCTION_TRACE (NsInitOneDevice);
500433d6423SLionel Sambuc 
501433d6423SLionel Sambuc 
502433d6423SLionel Sambuc     /* We are interested in Devices, Processors and ThermalZones only */
503433d6423SLionel Sambuc 
504433d6423SLionel Sambuc     DeviceNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
505433d6423SLionel Sambuc     if ((DeviceNode->Type != ACPI_TYPE_DEVICE)    &&
506433d6423SLionel Sambuc         (DeviceNode->Type != ACPI_TYPE_PROCESSOR) &&
507433d6423SLionel Sambuc         (DeviceNode->Type != ACPI_TYPE_THERMAL))
508433d6423SLionel Sambuc     {
509433d6423SLionel Sambuc         return_ACPI_STATUS (AE_OK);
510433d6423SLionel Sambuc     }
511433d6423SLionel Sambuc 
512433d6423SLionel Sambuc     /*
513433d6423SLionel Sambuc      * Because of an earlier namespace analysis, all subtrees that contain an
514433d6423SLionel Sambuc      * _INI method are tagged.
515433d6423SLionel Sambuc      *
516433d6423SLionel Sambuc      * If this device subtree does not contain any _INI methods, we
517433d6423SLionel Sambuc      * can exit now and stop traversing this entire subtree.
518433d6423SLionel Sambuc      */
519433d6423SLionel Sambuc     if (!(DeviceNode->Flags & ANOBJ_SUBTREE_HAS_INI))
520433d6423SLionel Sambuc     {
521433d6423SLionel Sambuc         return_ACPI_STATUS (AE_CTRL_DEPTH);
522433d6423SLionel Sambuc     }
523433d6423SLionel Sambuc 
524433d6423SLionel Sambuc     /*
525433d6423SLionel Sambuc      * Run _STA to determine if this device is present and functioning. We
526433d6423SLionel Sambuc      * must know this information for two important reasons (from ACPI spec):
527433d6423SLionel Sambuc      *
528433d6423SLionel Sambuc      * 1) We can only run _INI if the device is present.
529433d6423SLionel Sambuc      * 2) We must abort the device tree walk on this subtree if the device is
530433d6423SLionel Sambuc      *    not present and is not functional (we will not examine the children)
531433d6423SLionel Sambuc      *
532433d6423SLionel Sambuc      * The _STA method is not required to be present under the device, we
533433d6423SLionel Sambuc      * assume the device is present if _STA does not exist.
534433d6423SLionel Sambuc      */
535433d6423SLionel Sambuc     ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
536433d6423SLionel Sambuc         ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__STA));
537433d6423SLionel Sambuc 
538433d6423SLionel Sambuc     Status = AcpiUtExecute_STA (DeviceNode, &Flags);
539433d6423SLionel Sambuc     if (ACPI_FAILURE (Status))
540433d6423SLionel Sambuc     {
541433d6423SLionel Sambuc         /* Ignore error and move on to next device */
542433d6423SLionel Sambuc 
543433d6423SLionel Sambuc         return_ACPI_STATUS (AE_OK);
544433d6423SLionel Sambuc     }
545433d6423SLionel Sambuc 
546433d6423SLionel Sambuc     /*
547433d6423SLionel Sambuc      * Flags == -1 means that _STA was not found. In this case, we assume that
548433d6423SLionel Sambuc      * the device is both present and functional.
549433d6423SLionel Sambuc      *
550433d6423SLionel Sambuc      * From the ACPI spec, description of _STA:
551433d6423SLionel Sambuc      *
552433d6423SLionel Sambuc      * "If a device object (including the processor object) does not have an
553433d6423SLionel Sambuc      * _STA object, then OSPM assumes that all of the above bits are set (in
554433d6423SLionel Sambuc      * other words, the device is present, ..., and functioning)"
555433d6423SLionel Sambuc      */
556433d6423SLionel Sambuc     if (Flags != ACPI_UINT32_MAX)
557433d6423SLionel Sambuc     {
558433d6423SLionel Sambuc         WalkInfo->Num_STA++;
559433d6423SLionel Sambuc     }
560433d6423SLionel Sambuc 
561433d6423SLionel Sambuc     /*
562433d6423SLionel Sambuc      * Examine the PRESENT and FUNCTIONING status bits
563433d6423SLionel Sambuc      *
564433d6423SLionel Sambuc      * Note: ACPI spec does not seem to specify behavior for the present but
565433d6423SLionel Sambuc      * not functioning case, so we assume functioning if present.
566433d6423SLionel Sambuc      */
567433d6423SLionel Sambuc     if (!(Flags & ACPI_STA_DEVICE_PRESENT))
568433d6423SLionel Sambuc     {
569433d6423SLionel Sambuc         /* Device is not present, we must examine the Functioning bit */
570433d6423SLionel Sambuc 
571433d6423SLionel Sambuc         if (Flags & ACPI_STA_DEVICE_FUNCTIONING)
572433d6423SLionel Sambuc         {
573433d6423SLionel Sambuc             /*
574433d6423SLionel Sambuc              * Device is not present but is "functioning". In this case,
575433d6423SLionel Sambuc              * we will not run _INI, but we continue to examine the children
576433d6423SLionel Sambuc              * of this device.
577433d6423SLionel Sambuc              *
578433d6423SLionel Sambuc              * From the ACPI spec, description of _STA: (Note - no mention
579433d6423SLionel Sambuc              * of whether to run _INI or not on the device in question)
580433d6423SLionel Sambuc              *
581433d6423SLionel Sambuc              * "_STA may return bit 0 clear (not present) with bit 3 set
582433d6423SLionel Sambuc              * (device is functional). This case is used to indicate a valid
583433d6423SLionel Sambuc              * device for which no device driver should be loaded (for example,
584433d6423SLionel Sambuc              * a bridge device.) Children of this device may be present and
585433d6423SLionel Sambuc              * valid. OSPM should continue enumeration below a device whose
586433d6423SLionel Sambuc              * _STA returns this bit combination"
587433d6423SLionel Sambuc              */
588433d6423SLionel Sambuc             return_ACPI_STATUS (AE_OK);
589433d6423SLionel Sambuc         }
590433d6423SLionel Sambuc         else
591433d6423SLionel Sambuc         {
592433d6423SLionel Sambuc             /*
593433d6423SLionel Sambuc              * Device is not present and is not functioning. We must abort the
594433d6423SLionel Sambuc              * walk of this subtree immediately -- don't look at the children
595433d6423SLionel Sambuc              * of such a device.
596433d6423SLionel Sambuc              *
597433d6423SLionel Sambuc              * From the ACPI spec, description of _INI:
598433d6423SLionel Sambuc              *
599433d6423SLionel Sambuc              * "If the _STA method indicates that the device is not present,
600433d6423SLionel Sambuc              * OSPM will not run the _INI and will not examine the children
601433d6423SLionel Sambuc              * of the device for _INI methods"
602433d6423SLionel Sambuc              */
603433d6423SLionel Sambuc             return_ACPI_STATUS (AE_CTRL_DEPTH);
604433d6423SLionel Sambuc         }
605433d6423SLionel Sambuc     }
606433d6423SLionel Sambuc 
607433d6423SLionel Sambuc     /*
608433d6423SLionel Sambuc      * The device is present or is assumed present if no _STA exists.
609433d6423SLionel Sambuc      * Run the _INI if it exists (not required to exist)
610433d6423SLionel Sambuc      *
611433d6423SLionel Sambuc      * Note: We know there is an _INI within this subtree, but it may not be
612433d6423SLionel Sambuc      * under this particular device, it may be lower in the branch.
613433d6423SLionel Sambuc      */
614433d6423SLionel Sambuc     ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
615433d6423SLionel Sambuc         ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__INI));
616433d6423SLionel Sambuc 
617*29492bb7SDavid van Moolenbroek     ACPI_MEMSET (Info, 0, sizeof (ACPI_EVALUATE_INFO));
618433d6423SLionel Sambuc     Info->PrefixNode = DeviceNode;
619*29492bb7SDavid van Moolenbroek     Info->RelativePathname = METHOD_NAME__INI;
620433d6423SLionel Sambuc     Info->Parameters = NULL;
621433d6423SLionel Sambuc     Info->Flags = ACPI_IGNORE_RETURN_VALUE;
622433d6423SLionel Sambuc 
623433d6423SLionel Sambuc     Status = AcpiNsEvaluate (Info);
624433d6423SLionel Sambuc     if (ACPI_SUCCESS (Status))
625433d6423SLionel Sambuc     {
626433d6423SLionel Sambuc         WalkInfo->Num_INI++;
627433d6423SLionel Sambuc     }
628433d6423SLionel Sambuc 
629433d6423SLionel Sambuc #ifdef ACPI_DEBUG_OUTPUT
630433d6423SLionel Sambuc     else if (Status != AE_NOT_FOUND)
631433d6423SLionel Sambuc     {
632433d6423SLionel Sambuc         /* Ignore error and move on to next device */
633433d6423SLionel Sambuc 
634*29492bb7SDavid van Moolenbroek         char *ScopeName = AcpiNsGetExternalPathname (Info->Node);
635433d6423SLionel Sambuc 
636433d6423SLionel Sambuc         ACPI_EXCEPTION ((AE_INFO, Status, "during %s._INI execution",
637433d6423SLionel Sambuc             ScopeName));
638433d6423SLionel Sambuc         ACPI_FREE (ScopeName);
639433d6423SLionel Sambuc     }
640433d6423SLionel Sambuc #endif
641433d6423SLionel Sambuc 
642433d6423SLionel Sambuc     /* Ignore errors from above */
643433d6423SLionel Sambuc 
644433d6423SLionel Sambuc     Status = AE_OK;
645433d6423SLionel Sambuc 
646433d6423SLionel Sambuc     /*
647433d6423SLionel Sambuc      * The _INI method has been run if present; call the Global Initialization
648433d6423SLionel Sambuc      * Handler for this device.
649433d6423SLionel Sambuc      */
650433d6423SLionel Sambuc     if (AcpiGbl_InitHandler)
651433d6423SLionel Sambuc     {
652433d6423SLionel Sambuc         Status = AcpiGbl_InitHandler (DeviceNode, ACPI_INIT_DEVICE_INI);
653433d6423SLionel Sambuc     }
654433d6423SLionel Sambuc 
655433d6423SLionel Sambuc     return_ACPI_STATUS (Status);
656433d6423SLionel Sambuc }
657