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 | |
57 | static ACPI_STATUS |
58 | AcpiDsExecuteArguments ( |
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 | |
80 | static ACPI_STATUS |
81 | AcpiDsExecuteArguments ( |
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 | |
176 | Cleanup: |
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 | |
195 | ACPI_STATUS |
196 | AcpiDsGetBufferFieldArguments ( |
197 | ACPI_OPERAND_OBJECT *ObjDesc) |
198 | { |
199 | ACPI_OPERAND_OBJECT *; |
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 | |
244 | ACPI_STATUS |
245 | AcpiDsGetBankFieldArguments ( |
246 | ACPI_OPERAND_OBJECT *ObjDesc) |
247 | { |
248 | ACPI_OPERAND_OBJECT *; |
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 | |
293 | ACPI_STATUS |
294 | AcpiDsGetBufferArguments ( |
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 | |
343 | ACPI_STATUS |
344 | AcpiDsGetPackageArguments ( |
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 | |
392 | ACPI_STATUS |
393 | AcpiDsGetRegionArguments ( |
394 | ACPI_OPERAND_OBJECT *ObjDesc) |
395 | { |
396 | ACPI_NAMESPACE_NODE *Node; |
397 | ACPI_STATUS Status; |
398 | ACPI_OPERAND_OBJECT *; |
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 | |