1/******************************************************************************
2 *
3 * Module Name: dsargs - Support for execution of dynamic arguments for static
4 * objects (regions, fields, buffer fields, etc.)
5 *
6 *****************************************************************************/
7
8/*
9 * Copyright (C) 2000 - 2016, Intel Corp.
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer,
17 * without modification.
18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 * substantially similar to the "NO WARRANTY" disclaimer below
20 * ("Disclaimer") and any redistribution must be conditioned upon
21 * including a substantially similar Disclaimer requirement for further
22 * binary redistribution.
23 * 3. Neither the names of the above-listed copyright holders nor the names
24 * of any contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * Alternatively, this software may be distributed under the terms of the
28 * GNU General Public License ("GPL") version 2 as published by the Free
29 * Software Foundation.
30 *
31 * NO WARRANTY
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 * POSSIBILITY OF SUCH DAMAGES.
43 */
44
45#include "acpi.h"
46#include "accommon.h"
47#include "acparser.h"
48#include "amlcode.h"
49#include "acdispat.h"
50#include "acnamesp.h"
51
52#define _COMPONENT ACPI_DISPATCHER
53 ACPI_MODULE_NAME ("dsargs")
54
55/* Local prototypes */
56
57static ACPI_STATUS
58AcpiDsExecuteArguments (
59 ACPI_NAMESPACE_NODE *Node,
60 ACPI_NAMESPACE_NODE *ScopeNode,
61 UINT32 AmlLength,
62 UINT8 *AmlStart);
63
64
65/*******************************************************************************
66 *
67 * FUNCTION: AcpiDsExecuteArguments
68 *
69 * PARAMETERS: Node - Object NS node
70 * ScopeNode - Parent NS node
71 * AmlLength - Length of executable AML
72 * AmlStart - Pointer to the AML
73 *
74 * RETURN: Status.
75 *
76 * DESCRIPTION: Late (deferred) execution of region or field arguments
77 *
78 ******************************************************************************/
79
80static ACPI_STATUS
81AcpiDsExecuteArguments (
82 ACPI_NAMESPACE_NODE *Node,
83 ACPI_NAMESPACE_NODE *ScopeNode,
84 UINT32 AmlLength,
85 UINT8 *AmlStart)
86{
87 ACPI_STATUS Status;
88 ACPI_PARSE_OBJECT *Op;
89 ACPI_WALK_STATE *WalkState;
90
91
92 ACPI_FUNCTION_TRACE (DsExecuteArguments);
93
94
95 /* Allocate a new parser op to be the root of the parsed tree */
96
97 Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP, AmlStart);
98 if (!Op)
99 {
100 return_ACPI_STATUS (AE_NO_MEMORY);
101 }
102
103 /* Save the Node for use in AcpiPsParseAml */
104
105 Op->Common.Node = ScopeNode;
106
107 /* Create and initialize a new parser state */
108
109 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
110 if (!WalkState)
111 {
112 Status = AE_NO_MEMORY;
113 goto Cleanup;
114 }
115
116 Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart,
117 AmlLength, NULL, ACPI_IMODE_LOAD_PASS1);
118 if (ACPI_FAILURE (Status))
119 {
120 AcpiDsDeleteWalkState (WalkState);
121 goto Cleanup;
122 }
123
124 /* Mark this parse as a deferred opcode */
125
126 WalkState->ParseFlags = ACPI_PARSE_DEFERRED_OP;
127 WalkState->DeferredNode = Node;
128
129 /* Pass1: Parse the entire declaration */
130
131 Status = AcpiPsParseAml (WalkState);
132 if (ACPI_FAILURE (Status))
133 {
134 goto Cleanup;
135 }
136
137 /* Get and init the Op created above */
138
139 Op->Common.Node = Node;
140 AcpiPsDeleteParseTree (Op);
141
142 /* Evaluate the deferred arguments */
143
144 Op = AcpiPsAllocOp (AML_INT_EVAL_SUBTREE_OP, AmlStart);
145 if (!Op)
146 {
147 return_ACPI_STATUS (AE_NO_MEMORY);
148 }
149
150 Op->Common.Node = ScopeNode;
151
152 /* Create and initialize a new parser state */
153
154 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
155 if (!WalkState)
156 {
157 Status = AE_NO_MEMORY;
158 goto Cleanup;
159 }
160
161 /* Execute the opcode and arguments */
162
163 Status = AcpiDsInitAmlWalk (WalkState, Op, NULL, AmlStart,
164 AmlLength, NULL, ACPI_IMODE_EXECUTE);
165 if (ACPI_FAILURE (Status))
166 {
167 AcpiDsDeleteWalkState (WalkState);
168 goto Cleanup;
169 }
170
171 /* Mark this execution as a deferred opcode */
172
173 WalkState->DeferredNode = Node;
174 Status = AcpiPsParseAml (WalkState);
175
176Cleanup:
177 AcpiPsDeleteParseTree (Op);
178 return_ACPI_STATUS (Status);
179}
180
181
182/*******************************************************************************
183 *
184 * FUNCTION: AcpiDsGetBufferFieldArguments
185 *
186 * PARAMETERS: ObjDesc - A valid BufferField object
187 *
188 * RETURN: Status.
189 *
190 * DESCRIPTION: Get BufferField Buffer and Index. This implements the late
191 * evaluation of these field attributes.
192 *
193 ******************************************************************************/
194
195ACPI_STATUS
196AcpiDsGetBufferFieldArguments (
197 ACPI_OPERAND_OBJECT *ObjDesc)
198{
199 ACPI_OPERAND_OBJECT *ExtraDesc;
200 ACPI_NAMESPACE_NODE *Node;
201 ACPI_STATUS Status;
202
203
204 ACPI_FUNCTION_TRACE_PTR (DsGetBufferFieldArguments, ObjDesc);
205
206
207 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
208 {
209 return_ACPI_STATUS (AE_OK);
210 }
211
212 /* Get the AML pointer (method object) and BufferField node */
213
214 ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
215 Node = ObjDesc->BufferField.Node;
216
217 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
218 ACPI_TYPE_BUFFER_FIELD, Node, NULL));
219
220 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n",
221 AcpiUtGetNodeName (Node)));
222
223 /* Execute the AML code for the TermArg arguments */
224
225 Status = AcpiDsExecuteArguments (Node, Node->Parent,
226 ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
227 return_ACPI_STATUS (Status);
228}
229
230
231/*******************************************************************************
232 *
233 * FUNCTION: AcpiDsGetBankFieldArguments
234 *
235 * PARAMETERS: ObjDesc - A valid BankField object
236 *
237 * RETURN: Status.
238 *
239 * DESCRIPTION: Get BankField BankValue. This implements the late
240 * evaluation of these field attributes.
241 *
242 ******************************************************************************/
243
244ACPI_STATUS
245AcpiDsGetBankFieldArguments (
246 ACPI_OPERAND_OBJECT *ObjDesc)
247{
248 ACPI_OPERAND_OBJECT *ExtraDesc;
249 ACPI_NAMESPACE_NODE *Node;
250 ACPI_STATUS Status;
251
252
253 ACPI_FUNCTION_TRACE_PTR (DsGetBankFieldArguments, ObjDesc);
254
255
256 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
257 {
258 return_ACPI_STATUS (AE_OK);
259 }
260
261 /* Get the AML pointer (method object) and BankField node */
262
263 ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
264 Node = ObjDesc->BankField.Node;
265
266 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
267 ACPI_TYPE_LOCAL_BANK_FIELD, Node, NULL));
268
269 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n",
270 AcpiUtGetNodeName (Node)));
271
272 /* Execute the AML code for the TermArg arguments */
273
274 Status = AcpiDsExecuteArguments (Node, Node->Parent,
275 ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
276 return_ACPI_STATUS (Status);
277}
278
279
280/*******************************************************************************
281 *
282 * FUNCTION: AcpiDsGetBufferArguments
283 *
284 * PARAMETERS: ObjDesc - A valid Buffer object
285 *
286 * RETURN: Status.
287 *
288 * DESCRIPTION: Get Buffer length and initializer byte list. This implements
289 * the late evaluation of these attributes.
290 *
291 ******************************************************************************/
292
293ACPI_STATUS
294AcpiDsGetBufferArguments (
295 ACPI_OPERAND_OBJECT *ObjDesc)
296{
297 ACPI_NAMESPACE_NODE *Node;
298 ACPI_STATUS Status;
299
300
301 ACPI_FUNCTION_TRACE_PTR (DsGetBufferArguments, ObjDesc);
302
303
304 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
305 {
306 return_ACPI_STATUS (AE_OK);
307 }
308
309 /* Get the Buffer node */
310
311 Node = ObjDesc->Buffer.Node;
312 if (!Node)
313 {
314 ACPI_ERROR ((AE_INFO,
315 "No pointer back to namespace node in buffer object %p",
316 ObjDesc));
317 return_ACPI_STATUS (AE_AML_INTERNAL);
318 }
319
320 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Buffer Arg Init\n"));
321
322 /* Execute the AML code for the TermArg arguments */
323
324 Status = AcpiDsExecuteArguments (Node, Node,
325 ObjDesc->Buffer.AmlLength, ObjDesc->Buffer.AmlStart);
326 return_ACPI_STATUS (Status);
327}
328
329
330/*******************************************************************************
331 *
332 * FUNCTION: AcpiDsGetPackageArguments
333 *
334 * PARAMETERS: ObjDesc - A valid Package object
335 *
336 * RETURN: Status.
337 *
338 * DESCRIPTION: Get Package length and initializer byte list. This implements
339 * the late evaluation of these attributes.
340 *
341 ******************************************************************************/
342
343ACPI_STATUS
344AcpiDsGetPackageArguments (
345 ACPI_OPERAND_OBJECT *ObjDesc)
346{
347 ACPI_NAMESPACE_NODE *Node;
348 ACPI_STATUS Status;
349
350
351 ACPI_FUNCTION_TRACE_PTR (DsGetPackageArguments, ObjDesc);
352
353
354 if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
355 {
356 return_ACPI_STATUS (AE_OK);
357 }
358
359 /* Get the Package node */
360
361 Node = ObjDesc->Package.Node;
362 if (!Node)
363 {
364 ACPI_ERROR ((AE_INFO,
365 "No pointer back to namespace node in package %p", ObjDesc));
366 return_ACPI_STATUS (AE_AML_INTERNAL);
367 }
368
369 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Package Arg Init\n"));
370
371 /* Execute the AML code for the TermArg arguments */
372
373 Status = AcpiDsExecuteArguments (Node, Node,
374 ObjDesc->Package.AmlLength, ObjDesc->Package.AmlStart);
375 return_ACPI_STATUS (Status);
376}
377
378
379/*******************************************************************************
380 *
381 * FUNCTION: AcpiDsGetRegionArguments
382 *
383 * PARAMETERS: ObjDesc - A valid region object
384 *
385 * RETURN: Status.
386 *
387 * DESCRIPTION: Get region address and length. This implements the late
388 * evaluation of these region attributes.
389 *
390 ******************************************************************************/
391
392ACPI_STATUS
393AcpiDsGetRegionArguments (
394 ACPI_OPERAND_OBJECT *ObjDesc)
395{
396 ACPI_NAMESPACE_NODE *Node;
397 ACPI_STATUS Status;
398 ACPI_OPERAND_OBJECT *ExtraDesc;
399
400
401 ACPI_FUNCTION_TRACE_PTR (DsGetRegionArguments, ObjDesc);
402
403
404 if (ObjDesc->Region.Flags & AOPOBJ_DATA_VALID)
405 {
406 return_ACPI_STATUS (AE_OK);
407 }
408
409 ExtraDesc = AcpiNsGetSecondaryObject (ObjDesc);
410 if (!ExtraDesc)
411 {
412 return_ACPI_STATUS (AE_NOT_EXIST);
413 }
414
415 /* Get the Region node */
416
417 Node = ObjDesc->Region.Node;
418
419 ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
420 ACPI_TYPE_REGION, Node, NULL));
421
422 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
423 "[%4.4s] OpRegion Arg Init at AML %p\n",
424 AcpiUtGetNodeName (Node), ExtraDesc->Extra.AmlStart));
425
426 /* Execute the argument AML */
427
428 Status = AcpiDsExecuteArguments (Node, ExtraDesc->Extra.ScopeNode,
429 ExtraDesc->Extra.AmlLength, ExtraDesc->Extra.AmlStart);
430 if (ACPI_FAILURE (Status))
431 {
432 return_ACPI_STATUS (Status);
433 }
434
435 Status = AcpiUtAddAddressRange (ObjDesc->Region.SpaceId,
436 ObjDesc->Region.Address, ObjDesc->Region.Length, Node);
437 return_ACPI_STATUS (Status);
438}
439