| 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 | |