1 /******************************************************************************* 2 * 3 * Module Name: rscreate - Create resource lists/tables 4 * 5 ******************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2022, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 ***************************************************************************** 115 * 116 * Alternatively, you may choose to be licensed under the terms of the 117 * following license: 118 * 119 * Redistribution and use in source and binary forms, with or without 120 * modification, are permitted provided that the following conditions 121 * are met: 122 * 1. Redistributions of source code must retain the above copyright 123 * notice, this list of conditions, and the following disclaimer, 124 * without modification. 125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 126 * substantially similar to the "NO WARRANTY" disclaimer below 127 * ("Disclaimer") and any redistribution must be conditioned upon 128 * including a substantially similar Disclaimer requirement for further 129 * binary redistribution. 130 * 3. Neither the names of the above-listed copyright holders nor the names 131 * of any contributors may be used to endorse or promote products derived 132 * from this software without specific prior written permission. 133 * 134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 145 * 146 * Alternatively, you may choose to be licensed under the terms of the 147 * GNU General Public License ("GPL") version 2 as published by the Free 148 * Software Foundation. 149 * 150 *****************************************************************************/ 151 152 #include <contrib/dev/acpica/include/acpi.h> 153 #include <contrib/dev/acpica/include/accommon.h> 154 #include <contrib/dev/acpica/include/acresrc.h> 155 #include <contrib/dev/acpica/include/acnamesp.h> 156 157 #define _COMPONENT ACPI_RESOURCES 158 ACPI_MODULE_NAME ("rscreate") 159 160 161 /******************************************************************************* 162 * 163 * FUNCTION: AcpiBufferToResource 164 * 165 * PARAMETERS: AmlBuffer - Pointer to the resource byte stream 166 * AmlBufferLength - Length of the AmlBuffer 167 * ResourcePtr - Where the converted resource is returned 168 * 169 * RETURN: Status 170 * 171 * DESCRIPTION: Convert a raw AML buffer to a resource list 172 * 173 ******************************************************************************/ 174 175 ACPI_STATUS 176 AcpiBufferToResource ( 177 UINT8 *AmlBuffer, 178 UINT16 AmlBufferLength, 179 ACPI_RESOURCE **ResourcePtr) 180 { 181 ACPI_STATUS Status; 182 ACPI_SIZE ListSizeNeeded; 183 void *Resource; 184 void *CurrentResourcePtr; 185 186 187 ACPI_FUNCTION_TRACE (AcpiBufferToResource); 188 189 190 /* 191 * Note: we allow AE_AML_NO_RESOURCE_END_TAG, since an end tag 192 * is not required here. 193 */ 194 195 /* Get the required length for the converted resource */ 196 197 Status = AcpiRsGetListLength ( 198 AmlBuffer, AmlBufferLength, &ListSizeNeeded); 199 if (Status == AE_AML_NO_RESOURCE_END_TAG) 200 { 201 Status = AE_OK; 202 } 203 if (ACPI_FAILURE (Status)) 204 { 205 return_ACPI_STATUS (Status); 206 } 207 208 /* Allocate a buffer for the converted resource */ 209 210 Resource = ACPI_ALLOCATE_ZEROED (ListSizeNeeded); 211 CurrentResourcePtr = Resource; 212 if (!Resource) 213 { 214 return_ACPI_STATUS (AE_NO_MEMORY); 215 } 216 217 /* Perform the AML-to-Resource conversion */ 218 219 Status = AcpiUtWalkAmlResources (NULL, AmlBuffer, AmlBufferLength, 220 AcpiRsConvertAmlToResources, &CurrentResourcePtr); 221 if (Status == AE_AML_NO_RESOURCE_END_TAG) 222 { 223 Status = AE_OK; 224 } 225 if (ACPI_FAILURE (Status)) 226 { 227 ACPI_FREE (Resource); 228 } 229 else 230 { 231 *ResourcePtr = Resource; 232 } 233 234 return_ACPI_STATUS (Status); 235 } 236 237 ACPI_EXPORT_SYMBOL (AcpiBufferToResource) 238 239 240 /******************************************************************************* 241 * 242 * FUNCTION: AcpiRsCreateResourceList 243 * 244 * PARAMETERS: AmlBuffer - Pointer to the resource byte stream 245 * OutputBuffer - Pointer to the user's buffer 246 * 247 * RETURN: Status: AE_OK if okay, else a valid ACPI_STATUS code 248 * If OutputBuffer is not large enough, OutputBufferLength 249 * indicates how large OutputBuffer should be, else it 250 * indicates how may UINT8 elements of OutputBuffer are valid. 251 * 252 * DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method 253 * execution and parses the stream to create a linked list 254 * of device resources. 255 * 256 ******************************************************************************/ 257 258 ACPI_STATUS 259 AcpiRsCreateResourceList ( 260 ACPI_OPERAND_OBJECT *AmlBuffer, 261 ACPI_BUFFER *OutputBuffer) 262 { 263 264 ACPI_STATUS Status; 265 UINT8 *AmlStart; 266 ACPI_SIZE ListSizeNeeded = 0; 267 UINT32 AmlBufferLength; 268 void *Resource; 269 270 271 ACPI_FUNCTION_TRACE (RsCreateResourceList); 272 273 274 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "AmlBuffer = %p\n", 275 AmlBuffer)); 276 277 /* Params already validated, so we don't re-validate here */ 278 279 AmlBufferLength = AmlBuffer->Buffer.Length; 280 AmlStart = AmlBuffer->Buffer.Pointer; 281 282 /* 283 * Pass the AmlBuffer into a module that can calculate 284 * the buffer size needed for the linked list 285 */ 286 Status = AcpiRsGetListLength (AmlStart, AmlBufferLength, 287 &ListSizeNeeded); 288 289 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n", 290 Status, (UINT32) ListSizeNeeded)); 291 if (ACPI_FAILURE (Status)) 292 { 293 return_ACPI_STATUS (Status); 294 } 295 296 /* Validate/Allocate/Clear caller buffer */ 297 298 Status = AcpiUtInitializeBuffer (OutputBuffer, ListSizeNeeded); 299 if (ACPI_FAILURE (Status)) 300 { 301 return_ACPI_STATUS (Status); 302 } 303 304 /* Do the conversion */ 305 306 Resource = OutputBuffer->Pointer; 307 Status = AcpiUtWalkAmlResources (NULL, AmlStart, AmlBufferLength, 308 AcpiRsConvertAmlToResources, &Resource); 309 if (ACPI_FAILURE (Status)) 310 { 311 return_ACPI_STATUS (Status); 312 } 313 314 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", 315 OutputBuffer->Pointer, (UINT32) OutputBuffer->Length)); 316 return_ACPI_STATUS (AE_OK); 317 } 318 319 320 /******************************************************************************* 321 * 322 * FUNCTION: AcpiRsCreatePciRoutingTable 323 * 324 * PARAMETERS: PackageObject - Pointer to a package containing one 325 * of more ACPI_OPERAND_OBJECTs 326 * OutputBuffer - Pointer to the user's buffer 327 * 328 * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code. 329 * If the OutputBuffer is too small, the error will be 330 * AE_BUFFER_OVERFLOW and OutputBuffer->Length will point 331 * to the size buffer needed. 332 * 333 * DESCRIPTION: Takes the ACPI_OPERAND_OBJECT package and creates a 334 * linked list of PCI interrupt descriptions 335 * 336 * NOTE: It is the caller's responsibility to ensure that the start of the 337 * output buffer is aligned properly (if necessary). 338 * 339 ******************************************************************************/ 340 341 ACPI_STATUS 342 AcpiRsCreatePciRoutingTable ( 343 ACPI_OPERAND_OBJECT *PackageObject, 344 ACPI_BUFFER *OutputBuffer) 345 { 346 UINT8 *Buffer; 347 ACPI_OPERAND_OBJECT **TopObjectList; 348 ACPI_OPERAND_OBJECT **SubObjectList; 349 ACPI_OPERAND_OBJECT *ObjDesc; 350 ACPI_SIZE BufferSizeNeeded = 0; 351 UINT32 NumberOfElements; 352 UINT32 Index; 353 ACPI_PCI_ROUTING_TABLE *UserPrt; 354 ACPI_NAMESPACE_NODE *Node; 355 ACPI_STATUS Status; 356 ACPI_BUFFER PathBuffer; 357 358 359 ACPI_FUNCTION_TRACE (RsCreatePciRoutingTable); 360 361 362 /* Params already validated, so we don't re-validate here */ 363 364 /* Get the required buffer length */ 365 366 Status = AcpiRsGetPciRoutingTableLength ( 367 PackageObject,&BufferSizeNeeded); 368 if (ACPI_FAILURE (Status)) 369 { 370 return_ACPI_STATUS (Status); 371 } 372 373 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "BufferSizeNeeded = %X\n", 374 (UINT32) BufferSizeNeeded)); 375 376 /* Validate/Allocate/Clear caller buffer */ 377 378 Status = AcpiUtInitializeBuffer (OutputBuffer, BufferSizeNeeded); 379 if (ACPI_FAILURE (Status)) 380 { 381 return_ACPI_STATUS (Status); 382 } 383 384 /* 385 * Loop through the ACPI_INTERNAL_OBJECTS - Each object should be a 386 * package that in turn contains an UINT64 Address, a UINT8 Pin, 387 * a Name, and a UINT8 SourceIndex. 388 */ 389 TopObjectList = PackageObject->Package.Elements; 390 NumberOfElements = PackageObject->Package.Count; 391 Buffer = OutputBuffer->Pointer; 392 UserPrt = ACPI_CAST_PTR (ACPI_PCI_ROUTING_TABLE, Buffer); 393 394 for (Index = 0; Index < NumberOfElements; Index++) 395 { 396 /* 397 * Point UserPrt past this current structure 398 * 399 * NOTE: On the first iteration, UserPrt->Length will 400 * be zero because we cleared the return buffer earlier 401 */ 402 Buffer += UserPrt->Length; 403 UserPrt = ACPI_CAST_PTR (ACPI_PCI_ROUTING_TABLE, Buffer); 404 405 /* 406 * Fill in the Length field with the information we have at this 407 * point. The minus four is to subtract the size of the UINT8 408 * Source[4] member because it is added below. 409 */ 410 UserPrt->Length = (sizeof (ACPI_PCI_ROUTING_TABLE) - 4); 411 412 /* Each subpackage must be of length 4 */ 413 414 if ((*TopObjectList)->Package.Count != 4) 415 { 416 ACPI_ERROR ((AE_INFO, 417 "(PRT[%u]) Need package of length 4, found length %u", 418 Index, (*TopObjectList)->Package.Count)); 419 return_ACPI_STATUS (AE_AML_PACKAGE_LIMIT); 420 } 421 422 /* 423 * Dereference the subpackage. 424 * The SubObjectList will now point to an array of the four IRQ 425 * elements: [Address, Pin, Source, SourceIndex] 426 */ 427 SubObjectList = (*TopObjectList)->Package.Elements; 428 429 /* 1) First subobject: Dereference the PRT.Address */ 430 431 ObjDesc = SubObjectList[0]; 432 if (!ObjDesc || ObjDesc->Common.Type != ACPI_TYPE_INTEGER) 433 { 434 ACPI_ERROR ((AE_INFO, 435 "(PRT[%u].Address) Need Integer, found %s", 436 Index, AcpiUtGetObjectTypeName (ObjDesc))); 437 return_ACPI_STATUS (AE_BAD_DATA); 438 } 439 440 UserPrt->Address = ObjDesc->Integer.Value; 441 442 /* 2) Second subobject: Dereference the PRT.Pin */ 443 444 ObjDesc = SubObjectList[1]; 445 if (!ObjDesc || ObjDesc->Common.Type != ACPI_TYPE_INTEGER) 446 { 447 ACPI_ERROR ((AE_INFO, "(PRT[%u].Pin) Need Integer, found %s", 448 Index, AcpiUtGetObjectTypeName (ObjDesc))); 449 return_ACPI_STATUS (AE_BAD_DATA); 450 } 451 452 UserPrt->Pin = (UINT32) ObjDesc->Integer.Value; 453 454 /* 455 * 3) Third subobject: Dereference the PRT.SourceName 456 * The name may be unresolved (slack mode), so allow a null object 457 */ 458 ObjDesc = SubObjectList[2]; 459 if (ObjDesc) 460 { 461 switch (ObjDesc->Common.Type) 462 { 463 case ACPI_TYPE_LOCAL_REFERENCE: 464 465 if (ObjDesc->Reference.Class != ACPI_REFCLASS_NAME) 466 { 467 ACPI_ERROR ((AE_INFO, 468 "(PRT[%u].Source) Need name, found Reference Class 0x%X", 469 Index, ObjDesc->Reference.Class)); 470 return_ACPI_STATUS (AE_BAD_DATA); 471 } 472 473 Node = ObjDesc->Reference.Node; 474 475 /* Use *remaining* length of the buffer as max for pathname */ 476 477 PathBuffer.Length = OutputBuffer->Length - 478 (UINT32) ((UINT8 *) UserPrt->Source - 479 (UINT8 *) OutputBuffer->Pointer); 480 PathBuffer.Pointer = UserPrt->Source; 481 482 Status = AcpiNsHandleToPathname ( 483 (ACPI_HANDLE) Node, &PathBuffer, FALSE); 484 if (ACPI_FAILURE (Status)) 485 { 486 return_ACPI_STATUS (Status); 487 } 488 489 /* +1 to include null terminator */ 490 491 UserPrt->Length += (UINT32) strlen (UserPrt->Source) + 1; 492 break; 493 494 case ACPI_TYPE_STRING: 495 496 strcpy (UserPrt->Source, ObjDesc->String.Pointer); 497 498 /* 499 * Add to the Length field the length of the string 500 * (add 1 for terminator) 501 */ 502 UserPrt->Length += ObjDesc->String.Length + 1; 503 break; 504 505 case ACPI_TYPE_INTEGER: 506 /* 507 * If this is a number, then the Source Name is NULL, since 508 * the entire buffer was zeroed out, we can leave this alone. 509 * 510 * Add to the Length field the length of the UINT32 NULL 511 */ 512 UserPrt->Length += sizeof (UINT32); 513 break; 514 515 default: 516 517 ACPI_ERROR ((AE_INFO, 518 "(PRT[%u].Source) Need Ref/String/Integer, found %s", 519 Index, AcpiUtGetObjectTypeName (ObjDesc))); 520 return_ACPI_STATUS (AE_BAD_DATA); 521 } 522 } 523 524 /* Now align the current length */ 525 526 UserPrt->Length = (UINT32) ACPI_ROUND_UP_TO_64BIT (UserPrt->Length); 527 528 /* 4) Fourth subobject: Dereference the PRT.SourceIndex */ 529 530 ObjDesc = SubObjectList[3]; 531 if (!ObjDesc || ObjDesc->Common.Type != ACPI_TYPE_INTEGER) 532 { 533 ACPI_ERROR ((AE_INFO, 534 "(PRT[%u].SourceIndex) Need Integer, found %s", 535 Index, AcpiUtGetObjectTypeName (ObjDesc))); 536 return_ACPI_STATUS (AE_BAD_DATA); 537 } 538 539 UserPrt->SourceIndex = (UINT32) ObjDesc->Integer.Value; 540 541 /* Point to the next ACPI_OPERAND_OBJECT in the top level package */ 542 543 TopObjectList++; 544 } 545 546 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", 547 OutputBuffer->Pointer, (UINT32) OutputBuffer->Length)); 548 return_ACPI_STATUS (AE_OK); 549 } 550 551 552 /******************************************************************************* 553 * 554 * FUNCTION: AcpiRsCreateAmlResources 555 * 556 * PARAMETERS: ResourceList - Pointer to the resource list buffer 557 * OutputBuffer - Where the AML buffer is returned 558 * 559 * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code. 560 * If the OutputBuffer is too small, the error will be 561 * AE_BUFFER_OVERFLOW and OutputBuffer->Length will point 562 * to the size buffer needed. 563 * 564 * DESCRIPTION: Converts a list of device resources to an AML bytestream 565 * to be used as input for the _SRS control method. 566 * 567 ******************************************************************************/ 568 569 ACPI_STATUS 570 AcpiRsCreateAmlResources ( 571 ACPI_BUFFER *ResourceList, 572 ACPI_BUFFER *OutputBuffer) 573 { 574 ACPI_STATUS Status; 575 ACPI_SIZE AmlSizeNeeded = 0; 576 577 578 ACPI_FUNCTION_TRACE (RsCreateAmlResources); 579 580 581 /* Params already validated, no need to re-validate here */ 582 583 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ResourceList Buffer = %p\n", 584 ResourceList->Pointer)); 585 586 /* Get the buffer size needed for the AML byte stream */ 587 588 Status = AcpiRsGetAmlLength ( 589 ResourceList->Pointer, ResourceList->Length, &AmlSizeNeeded); 590 591 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n", 592 (UINT32) AmlSizeNeeded, AcpiFormatException (Status))); 593 if (ACPI_FAILURE (Status)) 594 { 595 return_ACPI_STATUS (Status); 596 } 597 598 /* Validate/Allocate/Clear caller buffer */ 599 600 Status = AcpiUtInitializeBuffer (OutputBuffer, AmlSizeNeeded); 601 if (ACPI_FAILURE (Status)) 602 { 603 return_ACPI_STATUS (Status); 604 } 605 606 /* Do the conversion */ 607 608 Status = AcpiRsConvertResourcesToAml (ResourceList->Pointer, 609 AmlSizeNeeded, OutputBuffer->Pointer); 610 if (ACPI_FAILURE (Status)) 611 { 612 return_ACPI_STATUS (Status); 613 } 614 615 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", 616 OutputBuffer->Pointer, (UINT32) OutputBuffer->Length)); 617 return_ACPI_STATUS (AE_OK); 618 } 619