rsxface.c revision 117521
1/******************************************************************************* 2 * 3 * Module Name: rsxface - Public interfaces to the resource manager 4 * $Revision: 27 $ 5 * 6 ******************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2003, 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 *****************************************************************************/ 116 117 118#define __RSXFACE_C__ 119 120#include "acpi.h" 121#include "acresrc.h" 122 123#define _COMPONENT ACPI_RESOURCES 124 ACPI_MODULE_NAME ("rsxface") 125 126 127/******************************************************************************* 128 * 129 * FUNCTION: AcpiGetIrqRoutingTable 130 * 131 * PARAMETERS: DeviceHandle - a handle to the Bus device we are querying 132 * RetBuffer - a pointer to a buffer to receive the 133 * current resources for the device 134 * 135 * RETURN: Status 136 * 137 * DESCRIPTION: This function is called to get the IRQ routing table for a 138 * specific bus. The caller must first acquire a handle for the 139 * desired bus. The routine table is placed in the buffer pointed 140 * to by the RetBuffer variable parameter. 141 * 142 * If the function fails an appropriate status will be returned 143 * and the value of RetBuffer is undefined. 144 * 145 * This function attempts to execute the _PRT method contained in 146 * the object indicated by the passed DeviceHandle. 147 * 148 ******************************************************************************/ 149 150ACPI_STATUS 151AcpiGetIrqRoutingTable ( 152 ACPI_HANDLE DeviceHandle, 153 ACPI_BUFFER *RetBuffer) 154{ 155 ACPI_STATUS Status; 156 157 158 ACPI_FUNCTION_TRACE ("AcpiGetIrqRoutingTable "); 159 160 161 /* 162 * Must have a valid handle and buffer, So we have to have a handle 163 * and a return buffer structure, and if there is a non-zero buffer length 164 * we also need a valid pointer in the buffer. If it's a zero buffer length, 165 * we'll be returning the needed buffer size, so keep going. 166 */ 167 if (!DeviceHandle) 168 { 169 return_ACPI_STATUS (AE_BAD_PARAMETER); 170 } 171 172 Status = AcpiUtValidateBuffer (RetBuffer); 173 if (ACPI_FAILURE (Status)) 174 { 175 return_ACPI_STATUS (Status); 176 } 177 178 Status = AcpiRsGetPrtMethodData (DeviceHandle, RetBuffer); 179 return_ACPI_STATUS (Status); 180} 181 182 183/******************************************************************************* 184 * 185 * FUNCTION: AcpiGetCurrentResources 186 * 187 * PARAMETERS: DeviceHandle - a handle to the device object for the 188 * device we are querying 189 * RetBuffer - a pointer to a buffer to receive the 190 * current resources for the device 191 * 192 * RETURN: Status 193 * 194 * DESCRIPTION: This function is called to get the current resources for a 195 * specific device. The caller must first acquire a handle for 196 * the desired device. The resource data is placed in the buffer 197 * pointed to by the RetBuffer variable parameter. 198 * 199 * If the function fails an appropriate status will be returned 200 * and the value of RetBuffer is undefined. 201 * 202 * This function attempts to execute the _CRS method contained in 203 * the object indicated by the passed DeviceHandle. 204 * 205 ******************************************************************************/ 206 207ACPI_STATUS 208AcpiGetCurrentResources ( 209 ACPI_HANDLE DeviceHandle, 210 ACPI_BUFFER *RetBuffer) 211{ 212 ACPI_STATUS Status; 213 214 215 ACPI_FUNCTION_TRACE ("AcpiGetCurrentResources"); 216 217 218 /* 219 * Must have a valid handle and buffer, So we have to have a handle 220 * and a return buffer structure, and if there is a non-zero buffer length 221 * we also need a valid pointer in the buffer. If it's a zero buffer length, 222 * we'll be returning the needed buffer size, so keep going. 223 */ 224 if (!DeviceHandle) 225 { 226 return_ACPI_STATUS (AE_BAD_PARAMETER); 227 } 228 229 Status = AcpiUtValidateBuffer (RetBuffer); 230 if (ACPI_FAILURE (Status)) 231 { 232 return_ACPI_STATUS (Status); 233 } 234 235 Status = AcpiRsGetCrsMethodData (DeviceHandle, RetBuffer); 236 return_ACPI_STATUS (Status); 237} 238 239 240/******************************************************************************* 241 * 242 * FUNCTION: AcpiGetPossibleResources 243 * 244 * PARAMETERS: DeviceHandle - a handle to the device object for the 245 * device we are querying 246 * RetBuffer - a pointer to a buffer to receive the 247 * resources for the device 248 * 249 * RETURN: Status 250 * 251 * DESCRIPTION: This function is called to get a list of the possible resources 252 * for a specific device. The caller must first acquire a handle 253 * for the desired device. The resource data is placed in the 254 * buffer pointed to by the RetBuffer variable. 255 * 256 * If the function fails an appropriate status will be returned 257 * and the value of RetBuffer is undefined. 258 * 259 ******************************************************************************/ 260 261ACPI_STATUS 262AcpiGetPossibleResources ( 263 ACPI_HANDLE DeviceHandle, 264 ACPI_BUFFER *RetBuffer) 265{ 266 ACPI_STATUS Status; 267 268 269 ACPI_FUNCTION_TRACE ("AcpiGetPossibleResources"); 270 271 272 /* 273 * Must have a valid handle and buffer, So we have to have a handle 274 * and a return buffer structure, and if there is a non-zero buffer length 275 * we also need a valid pointer in the buffer. If it's a zero buffer length, 276 * we'll be returning the needed buffer size, so keep going. 277 */ 278 if (!DeviceHandle) 279 { 280 return_ACPI_STATUS (AE_BAD_PARAMETER); 281 } 282 283 Status = AcpiUtValidateBuffer (RetBuffer); 284 if (ACPI_FAILURE (Status)) 285 { 286 return_ACPI_STATUS (Status); 287 } 288 289 Status = AcpiRsGetPrsMethodData (DeviceHandle, RetBuffer); 290 return_ACPI_STATUS (Status); 291} 292 293 294/******************************************************************************* 295 * 296 * FUNCTION: AcpiWalkResources 297 * 298 * PARAMETERS: DeviceHandle - a handle to the device object for the 299 * device we are querying 300 * Path - method name of the resources we want 301 * (METHOD_NAME__CRS or METHOD_NAME__PRS) 302 * UserFunction - called for each resource 303 * Context - passed to UserFunction 304 * 305 * RETURN: Status 306 * 307 * DESCRIPTION: Retrieves the current or possible resource list for the 308 * specified device. The UserFunction is called once for 309 * each resource in the list. 310 * 311 ******************************************************************************/ 312 313ACPI_STATUS 314AcpiWalkResources ( 315 ACPI_HANDLE DeviceHandle, 316 char *Path, 317 ACPI_WALK_RESOURCE_CALLBACK UserFunction, 318 void *Context) 319{ 320 ACPI_STATUS Status; 321 ACPI_BUFFER Buffer = {ACPI_ALLOCATE_BUFFER, NULL}; 322 ACPI_RESOURCE *Resource; 323 324 325 ACPI_FUNCTION_TRACE ("AcpiWalkResources"); 326 327 328 if (!DeviceHandle || 329 (ACPI_STRNCMP (Path, METHOD_NAME__CRS, sizeof (METHOD_NAME__CRS)) && 330 ACPI_STRNCMP (Path, METHOD_NAME__PRS, sizeof (METHOD_NAME__PRS)))) 331 { 332 return_ACPI_STATUS (AE_BAD_PARAMETER); 333 } 334 335 Status = AcpiRsGetMethodData (DeviceHandle, Path, &Buffer); 336 if (ACPI_FAILURE (Status)) 337 { 338 return_ACPI_STATUS (Status); 339 } 340 341 Resource = (ACPI_RESOURCE *) Buffer.Pointer; 342 for (;;) 343 { 344 if (!Resource || Resource->Id == ACPI_RSTYPE_END_TAG) 345 { 346 break; 347 } 348 349 Status = UserFunction (Resource, Context); 350 351 switch (Status) 352 { 353 case AE_OK: 354 case AE_CTRL_DEPTH: 355 356 /* Just keep going */ 357 Status = AE_OK; 358 break; 359 360 case AE_CTRL_TERMINATE: 361 362 /* Exit now, with OK stats */ 363 364 Status = AE_OK; 365 goto Cleanup; 366 367 default: 368 369 /* All others are valid exceptions */ 370 371 goto Cleanup; 372 } 373 374 Resource = ACPI_NEXT_RESOURCE (Resource); 375 } 376 377Cleanup: 378 379 AcpiOsFree (Buffer.Pointer); 380 return_ACPI_STATUS (Status); 381} 382 383 384/******************************************************************************* 385 * 386 * FUNCTION: AcpiSetCurrentResources 387 * 388 * PARAMETERS: DeviceHandle - a handle to the device object for the 389 * device we are changing the resources of 390 * InBuffer - a pointer to a buffer containing the 391 * resources to be set for the device 392 * 393 * RETURN: Status 394 * 395 * DESCRIPTION: This function is called to set the current resources for a 396 * specific device. The caller must first acquire a handle for 397 * the desired device. The resource data is passed to the routine 398 * the buffer pointed to by the InBuffer variable. 399 * 400 ******************************************************************************/ 401 402ACPI_STATUS 403AcpiSetCurrentResources ( 404 ACPI_HANDLE DeviceHandle, 405 ACPI_BUFFER *InBuffer) 406{ 407 ACPI_STATUS Status; 408 409 410 ACPI_FUNCTION_TRACE ("AcpiSetCurrentResources"); 411 412 413 /* 414 * Must have a valid handle and buffer 415 */ 416 if ((!DeviceHandle) || 417 (!InBuffer) || 418 (!InBuffer->Pointer) || 419 (!InBuffer->Length)) 420 { 421 return_ACPI_STATUS (AE_BAD_PARAMETER); 422 } 423 424 Status = AcpiRsSetSrsMethodData (DeviceHandle, InBuffer); 425 return_ACPI_STATUS (Status); 426} 427 428 429#define ACPI_COPY_FIELD(Out, In, Field) ((Out)->Field = (In)->Field) 430#define ACPI_COPY_ADDRESS(Out, In) \ 431 ACPI_COPY_FIELD(Out, In, ResourceType); \ 432 ACPI_COPY_FIELD(Out, In, ProducerConsumer); \ 433 ACPI_COPY_FIELD(Out, In, Decode); \ 434 ACPI_COPY_FIELD(Out, In, MinAddressFixed); \ 435 ACPI_COPY_FIELD(Out, In, MaxAddressFixed); \ 436 ACPI_COPY_FIELD(Out, In, Attribute); \ 437 ACPI_COPY_FIELD(Out, In, Granularity); \ 438 ACPI_COPY_FIELD(Out, In, MinAddressRange); \ 439 ACPI_COPY_FIELD(Out, In, MaxAddressRange); \ 440 ACPI_COPY_FIELD(Out, In, AddressTranslationOffset); \ 441 ACPI_COPY_FIELD(Out, In, AddressLength); \ 442 ACPI_COPY_FIELD(Out, In, ResourceSource); 443 444/****************************************************************************** 445 * 446 * FUNCTION: AcpiResourceToAddress64 447 * 448 * PARAMETERS: resource - Pointer to a resource 449 * out - Pointer to the users's return 450 * buffer (a struct 451 * acpi_resource_address64) 452 * 453 * RETURN: Status 454 * 455 * DESCRIPTION: If the resource is an address16, address32, or address64, 456 * copy it to the address64 return buffer. This saves the 457 * caller from having to duplicate code for different-sized 458 * addresses. 459 * 460 ******************************************************************************/ 461 462ACPI_STATUS 463AcpiResourceToAddress64 ( 464 ACPI_RESOURCE *Resource, 465 ACPI_RESOURCE_ADDRESS64 *Out) 466{ 467 ACPI_RESOURCE_ADDRESS16 *Address16; 468 ACPI_RESOURCE_ADDRESS32 *Address32; 469 470 471 switch (Resource->Id) { 472 case ACPI_RSTYPE_ADDRESS16: 473 474 Address16 = (ACPI_RESOURCE_ADDRESS16 *) &Resource->Data; 475 ACPI_COPY_ADDRESS(Out, Address16); 476 break; 477 478 479 case ACPI_RSTYPE_ADDRESS32: 480 481 Address32 = (ACPI_RESOURCE_ADDRESS32 *) &Resource->Data; 482 ACPI_COPY_ADDRESS(Out, Address32); 483 break; 484 485 486 case ACPI_RSTYPE_ADDRESS64: 487 488 /* Simple copy for 64 bit source */ 489 490 ACPI_MEMCPY (Out, &Resource->Data, sizeof (ACPI_RESOURCE_ADDRESS64)); 491 break; 492 493 494 default: 495 return (AE_BAD_PARAMETER); 496 } 497 498 return (AE_OK); 499} 500