1 /******************************************************************************* 2 * 3 * Module Name: rscreate - Create resource lists/tables 4 * $Revision: 1.79 $ 5 * 6 ******************************************************************************/ 7 8 /****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2008, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117 #define __RSCREATE_C__ 118 119 #include "acpi.h" 120 #include "acresrc.h" 121 #include "acnamesp.h" 122 123 #define _COMPONENT ACPI_RESOURCES 124 ACPI_MODULE_NAME ("rscreate") 125 126 127 /******************************************************************************* 128 * 129 * FUNCTION: AcpiRsCreateResourceList 130 * 131 * PARAMETERS: AmlBuffer - Pointer to the resource byte stream 132 * OutputBuffer - Pointer to the user's buffer 133 * 134 * RETURN: Status: AE_OK if okay, else a valid ACPI_STATUS code 135 * If OutputBuffer is not large enough, OutputBufferLength 136 * indicates how large OutputBuffer should be, else it 137 * indicates how may UINT8 elements of OutputBuffer are valid. 138 * 139 * DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method 140 * execution and parses the stream to create a linked list 141 * of device resources. 142 * 143 ******************************************************************************/ 144 145 ACPI_STATUS 146 AcpiRsCreateResourceList ( 147 ACPI_OPERAND_OBJECT *AmlBuffer, 148 ACPI_BUFFER *OutputBuffer) 149 { 150 151 ACPI_STATUS Status; 152 UINT8 *AmlStart; 153 ACPI_SIZE ListSizeNeeded = 0; 154 UINT32 AmlBufferLength; 155 void *Resource; 156 157 158 ACPI_FUNCTION_TRACE (RsCreateResourceList); 159 160 161 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "AmlBuffer = %p\n", 162 AmlBuffer)); 163 164 /* Params already validated, so we don't re-validate here */ 165 166 AmlBufferLength = AmlBuffer->Buffer.Length; 167 AmlStart = AmlBuffer->Buffer.Pointer; 168 169 /* 170 * Pass the AmlBuffer into a module that can calculate 171 * the buffer size needed for the linked list 172 */ 173 Status = AcpiRsGetListLength (AmlStart, AmlBufferLength, 174 &ListSizeNeeded); 175 176 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n", 177 Status, (UINT32) ListSizeNeeded)); 178 if (ACPI_FAILURE (Status)) 179 { 180 return_ACPI_STATUS (Status); 181 } 182 183 /* Validate/Allocate/Clear caller buffer */ 184 185 Status = AcpiUtInitializeBuffer (OutputBuffer, ListSizeNeeded); 186 if (ACPI_FAILURE (Status)) 187 { 188 return_ACPI_STATUS (Status); 189 } 190 191 /* Do the conversion */ 192 193 Resource = OutputBuffer->Pointer; 194 Status = AcpiUtWalkAmlResources (AmlStart, AmlBufferLength, 195 AcpiRsConvertAmlToResources, &Resource); 196 if (ACPI_FAILURE (Status)) 197 { 198 return_ACPI_STATUS (Status); 199 } 200 201 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", 202 OutputBuffer->Pointer, (UINT32) OutputBuffer->Length)); 203 return_ACPI_STATUS (AE_OK); 204 } 205 206 207 /******************************************************************************* 208 * 209 * FUNCTION: AcpiRsCreatePciRoutingTable 210 * 211 * PARAMETERS: PackageObject - Pointer to an ACPI_OPERAND_OBJECT 212 * package 213 * OutputBuffer - Pointer to the user's buffer 214 * 215 * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code. 216 * If the OutputBuffer is too small, the error will be 217 * AE_BUFFER_OVERFLOW and OutputBuffer->Length will point 218 * to the size buffer needed. 219 * 220 * DESCRIPTION: Takes the ACPI_OPERAND_OBJECT package and creates a 221 * linked list of PCI interrupt descriptions 222 * 223 * NOTE: It is the caller's responsibility to ensure that the start of the 224 * output buffer is aligned properly (if necessary). 225 * 226 ******************************************************************************/ 227 228 ACPI_STATUS 229 AcpiRsCreatePciRoutingTable ( 230 ACPI_OPERAND_OBJECT *PackageObject, 231 ACPI_BUFFER *OutputBuffer) 232 { 233 UINT8 *Buffer; 234 ACPI_OPERAND_OBJECT **TopObjectList; 235 ACPI_OPERAND_OBJECT **SubObjectList; 236 ACPI_OPERAND_OBJECT *ObjDesc; 237 ACPI_SIZE BufferSizeNeeded = 0; 238 UINT32 NumberOfElements; 239 UINT32 Index; 240 ACPI_PCI_ROUTING_TABLE *UserPrt; 241 ACPI_NAMESPACE_NODE *Node; 242 ACPI_STATUS Status; 243 ACPI_BUFFER PathBuffer; 244 245 246 ACPI_FUNCTION_TRACE (RsCreatePciRoutingTable); 247 248 249 /* Params already validated, so we don't re-validate here */ 250 251 /* Get the required buffer length */ 252 253 Status = AcpiRsGetPciRoutingTableLength (PackageObject, 254 &BufferSizeNeeded); 255 if (ACPI_FAILURE (Status)) 256 { 257 return_ACPI_STATUS (Status); 258 } 259 260 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "BufferSizeNeeded = %X\n", 261 (UINT32) BufferSizeNeeded)); 262 263 /* Validate/Allocate/Clear caller buffer */ 264 265 Status = AcpiUtInitializeBuffer (OutputBuffer, BufferSizeNeeded); 266 if (ACPI_FAILURE (Status)) 267 { 268 return_ACPI_STATUS (Status); 269 } 270 271 /* 272 * Loop through the ACPI_INTERNAL_OBJECTS - Each object should be a 273 * package that in turn contains an ACPI_INTEGER Address, a UINT8 Pin, 274 * a Name, and a UINT8 SourceIndex. 275 */ 276 TopObjectList = PackageObject->Package.Elements; 277 NumberOfElements = PackageObject->Package.Count; 278 Buffer = OutputBuffer->Pointer; 279 UserPrt = ACPI_CAST_PTR (ACPI_PCI_ROUTING_TABLE, Buffer); 280 281 for (Index = 0; Index < NumberOfElements; Index++) 282 { 283 /* 284 * Point UserPrt past this current structure 285 * 286 * NOTE: On the first iteration, UserPrt->Length will 287 * be zero because we cleared the return buffer earlier 288 */ 289 Buffer += UserPrt->Length; 290 UserPrt = ACPI_CAST_PTR (ACPI_PCI_ROUTING_TABLE, Buffer); 291 292 /* 293 * Fill in the Length field with the information we have at this point. 294 * The minus four is to subtract the size of the UINT8 Source[4] member 295 * because it is added below. 296 */ 297 UserPrt->Length = (sizeof (ACPI_PCI_ROUTING_TABLE) - 4); 298 299 /* Each element of the top-level package must also be a package */ 300 301 if (ACPI_GET_OBJECT_TYPE (*TopObjectList) != ACPI_TYPE_PACKAGE) 302 { 303 ACPI_ERROR ((AE_INFO, 304 "(PRT[%X]) Need sub-package, found %s", 305 Index, AcpiUtGetObjectTypeName (*TopObjectList))); 306 return_ACPI_STATUS (AE_AML_OPERAND_TYPE); 307 } 308 309 /* Each sub-package must be of length 4 */ 310 311 if ((*TopObjectList)->Package.Count != 4) 312 { 313 ACPI_ERROR ((AE_INFO, 314 "(PRT[%X]) Need package of length 4, found length %d", 315 Index, (*TopObjectList)->Package.Count)); 316 return_ACPI_STATUS (AE_AML_PACKAGE_LIMIT); 317 } 318 319 /* 320 * Dereference the sub-package. 321 * The SubObjectList will now point to an array of the four IRQ 322 * elements: [Address, Pin, Source, SourceIndex] 323 */ 324 SubObjectList = (*TopObjectList)->Package.Elements; 325 326 /* 1) First subobject: Dereference the PRT.Address */ 327 328 ObjDesc = SubObjectList[0]; 329 if (ACPI_GET_OBJECT_TYPE (ObjDesc) != ACPI_TYPE_INTEGER) 330 { 331 ACPI_ERROR ((AE_INFO, "(PRT[%X].Address) Need Integer, found %s", 332 Index, AcpiUtGetObjectTypeName (ObjDesc))); 333 return_ACPI_STATUS (AE_BAD_DATA); 334 } 335 336 UserPrt->Address = ObjDesc->Integer.Value; 337 338 /* 2) Second subobject: Dereference the PRT.Pin */ 339 340 ObjDesc = SubObjectList[1]; 341 if (ACPI_GET_OBJECT_TYPE (ObjDesc) != ACPI_TYPE_INTEGER) 342 { 343 ACPI_ERROR ((AE_INFO, "(PRT[%X].Pin) Need Integer, found %s", 344 Index, AcpiUtGetObjectTypeName (ObjDesc))); 345 return_ACPI_STATUS (AE_BAD_DATA); 346 } 347 348 UserPrt->Pin = (UINT32) ObjDesc->Integer.Value; 349 350 /* 351 * If the BIOS has erroneously reversed the _PRT SourceName (index 2) 352 * and the SourceIndex (index 3), fix it. _PRT is important enough to 353 * workaround this BIOS error. This also provides compatibility with 354 * other ACPI implementations. 355 */ 356 ObjDesc = SubObjectList[3]; 357 if (!ObjDesc || (ACPI_GET_OBJECT_TYPE (ObjDesc) != ACPI_TYPE_INTEGER)) 358 { 359 SubObjectList[3] = SubObjectList[2]; 360 SubObjectList[2] = ObjDesc; 361 362 ACPI_WARNING ((AE_INFO, 363 "(PRT[%X].Source) SourceName and SourceIndex are reversed, fixed", 364 Index)); 365 } 366 367 /* 368 * 3) Third subobject: Dereference the PRT.SourceName 369 * The name may be unresolved (slack mode), so allow a null object 370 */ 371 ObjDesc = SubObjectList[2]; 372 if (ObjDesc) 373 { 374 switch (ACPI_GET_OBJECT_TYPE (ObjDesc)) 375 { 376 case ACPI_TYPE_LOCAL_REFERENCE: 377 378 if (ObjDesc->Reference.Class != ACPI_REFCLASS_NAME) 379 { 380 ACPI_ERROR ((AE_INFO, 381 "(PRT[%X].Source) Need name, found Reference Class %X", 382 Index, ObjDesc->Reference.Class)); 383 return_ACPI_STATUS (AE_BAD_DATA); 384 } 385 386 Node = ObjDesc->Reference.Node; 387 388 /* Use *remaining* length of the buffer as max for pathname */ 389 390 PathBuffer.Length = OutputBuffer->Length - 391 (UINT32) ((UINT8 *) UserPrt->Source - 392 (UINT8 *) OutputBuffer->Pointer); 393 PathBuffer.Pointer = UserPrt->Source; 394 395 Status = AcpiNsHandleToPathname ((ACPI_HANDLE) Node, &PathBuffer); 396 397 /* +1 to include null terminator */ 398 399 UserPrt->Length += (UINT32) ACPI_STRLEN (UserPrt->Source) + 1; 400 break; 401 402 403 case ACPI_TYPE_STRING: 404 405 ACPI_STRCPY (UserPrt->Source, ObjDesc->String.Pointer); 406 407 /* 408 * Add to the Length field the length of the string 409 * (add 1 for terminator) 410 */ 411 UserPrt->Length += ObjDesc->String.Length + 1; 412 break; 413 414 415 case ACPI_TYPE_INTEGER: 416 /* 417 * If this is a number, then the Source Name is NULL, since the 418 * entire buffer was zeroed out, we can leave this alone. 419 * 420 * Add to the Length field the length of the UINT32 NULL 421 */ 422 UserPrt->Length += sizeof (UINT32); 423 break; 424 425 426 default: 427 428 ACPI_ERROR ((AE_INFO, 429 "(PRT[%X].Source) Need Ref/String/Integer, found %s", 430 Index, AcpiUtGetObjectTypeName (ObjDesc))); 431 return_ACPI_STATUS (AE_BAD_DATA); 432 } 433 } 434 435 /* Now align the current length */ 436 437 UserPrt->Length = (UINT32) ACPI_ROUND_UP_TO_64BIT (UserPrt->Length); 438 439 /* 4) Fourth subobject: Dereference the PRT.SourceIndex */ 440 441 ObjDesc = SubObjectList[3]; 442 if (ACPI_GET_OBJECT_TYPE (ObjDesc) != ACPI_TYPE_INTEGER) 443 { 444 ACPI_ERROR ((AE_INFO, 445 "(PRT[%X].SourceIndex) Need Integer, found %s", 446 Index, AcpiUtGetObjectTypeName (ObjDesc))); 447 return_ACPI_STATUS (AE_BAD_DATA); 448 } 449 450 UserPrt->SourceIndex = (UINT32) ObjDesc->Integer.Value; 451 452 /* Point to the next ACPI_OPERAND_OBJECT in the top level package */ 453 454 TopObjectList++; 455 } 456 457 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", 458 OutputBuffer->Pointer, (UINT32) OutputBuffer->Length)); 459 return_ACPI_STATUS (AE_OK); 460 } 461 462 463 /******************************************************************************* 464 * 465 * FUNCTION: AcpiRsCreateAmlResources 466 * 467 * PARAMETERS: LinkedListBuffer - Pointer to the resource linked list 468 * OutputBuffer - Pointer to the user's buffer 469 * 470 * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code. 471 * If the OutputBuffer is too small, the error will be 472 * AE_BUFFER_OVERFLOW and OutputBuffer->Length will point 473 * to the size buffer needed. 474 * 475 * DESCRIPTION: Takes the linked list of device resources and 476 * creates a bytestream to be used as input for the 477 * _SRS control method. 478 * 479 ******************************************************************************/ 480 481 ACPI_STATUS 482 AcpiRsCreateAmlResources ( 483 ACPI_RESOURCE *LinkedListBuffer, 484 ACPI_BUFFER *OutputBuffer) 485 { 486 ACPI_STATUS Status; 487 ACPI_SIZE AmlSizeNeeded = 0; 488 489 490 ACPI_FUNCTION_TRACE (RsCreateAmlResources); 491 492 493 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "LinkedListBuffer = %p\n", 494 LinkedListBuffer)); 495 496 /* 497 * Params already validated, so we don't re-validate here 498 * 499 * Pass the LinkedListBuffer into a module that calculates 500 * the buffer size needed for the byte stream. 501 */ 502 Status = AcpiRsGetAmlLength (LinkedListBuffer, 503 &AmlSizeNeeded); 504 505 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n", 506 (UINT32) AmlSizeNeeded, AcpiFormatException (Status))); 507 if (ACPI_FAILURE (Status)) 508 { 509 return_ACPI_STATUS (Status); 510 } 511 512 /* Validate/Allocate/Clear caller buffer */ 513 514 Status = AcpiUtInitializeBuffer (OutputBuffer, AmlSizeNeeded); 515 if (ACPI_FAILURE (Status)) 516 { 517 return_ACPI_STATUS (Status); 518 } 519 520 /* Do the conversion */ 521 522 Status = AcpiRsConvertResourcesToAml (LinkedListBuffer, AmlSizeNeeded, 523 OutputBuffer->Pointer); 524 if (ACPI_FAILURE (Status)) 525 { 526 return_ACPI_STATUS (Status); 527 } 528 529 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", 530 OutputBuffer->Pointer, (UINT32) OutputBuffer->Length)); 531 return_ACPI_STATUS (AE_OK); 532 } 533 534