rsxface.c revision 151937
1209878Snwhitehorn/******************************************************************************* 2209878Snwhitehorn * 3209878Snwhitehorn * Module Name: rsxface - Public interfaces to the resource manager 4209878Snwhitehorn * $Revision: 1.37 $ 5209878Snwhitehorn * 6209878Snwhitehorn ******************************************************************************/ 7209878Snwhitehorn 8209878Snwhitehorn/****************************************************************************** 9209878Snwhitehorn * 10209878Snwhitehorn * 1. Copyright Notice 11209878Snwhitehorn * 12209878Snwhitehorn * Some or all of this work - Copyright (c) 1999 - 2005, Intel Corp. 13209878Snwhitehorn * All rights reserved. 14209878Snwhitehorn * 15209878Snwhitehorn * 2. License 16209878Snwhitehorn * 17209878Snwhitehorn * 2.1. This is your license from Intel Corp. under its intellectual property 18209878Snwhitehorn * rights. You may have additional license terms from the party that provided 19209878Snwhitehorn * you this software, covering your right to use that party's intellectual 20209878Snwhitehorn * property rights. 21209878Snwhitehorn * 22209878Snwhitehorn * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23209878Snwhitehorn * copy of the source code appearing in this file ("Covered Code") an 24209878Snwhitehorn * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25209878Snwhitehorn * base code distributed originally by Intel ("Original Intel Code") to copy, 26209878Snwhitehorn * make derivatives, distribute, use and display any portion of the Covered 27209878Snwhitehorn * Code in any form, with the right to sublicense such rights; and 28209878Snwhitehorn * 29209878Snwhitehorn * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30209878Snwhitehorn * license (with the right to sublicense), under only those claims of Intel 31209878Snwhitehorn * patents that are infringed by the Original Intel Code, to make, use, sell, 32209878Snwhitehorn * offer to sell, and import the Covered Code and derivative works thereof 33209878Snwhitehorn * solely to the minimum extent necessary to exercise the above copyright 34209878Snwhitehorn * license, and in no event shall the patent license extend to any additions 35209878Snwhitehorn * to or modifications of the Original Intel Code. No other license or right 36231044Sandreast * is granted directly or by implication, estoppel or otherwise; 37209878Snwhitehorn * 38209878Snwhitehorn * The above copyright and patent license is granted only if the following 39258502Sandreast * conditions are met: 40209878Snwhitehorn * 41209878Snwhitehorn * 3. Conditions 42231044Sandreast * 43209878Snwhitehorn * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44209878Snwhitehorn * Redistribution of source code of any substantial portion of the Covered 45209878Snwhitehorn * Code or modification with rights to further distribute source must include 46209878Snwhitehorn * the above Copyright Notice, the above License, this list of Conditions, 47209878Snwhitehorn * and the following Disclaimer and Export Compliance provision. In addition, 48218824Snwhitehorn * Licensee must cause all Covered Code to which Licensee contributes to 49209878Snwhitehorn * contain a file documenting the changes Licensee made to create that Covered 50209878Snwhitehorn * Code and the date of any change. Licensee must include in that file the 51209878Snwhitehorn * documentation of any changes made by any predecessor Licensee. Licensee 52209878Snwhitehorn * must include a prominent statement that the modification is derived, 53209878Snwhitehorn * directly or indirectly, from Original Intel Code. 54258502Sandreast * 55258502Sandreast * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56258502Sandreast * Redistribution of source code of any substantial portion of the Covered 57258502Sandreast * Code or modification without rights to further distribute source must 58209878Snwhitehorn * include the following Disclaimer and Export Compliance provision in the 59209878Snwhitehorn * documentation and/or other materials provided with distribution. In 60231044Sandreast * addition, Licensee may not authorize further sublicense of source of any 61209878Snwhitehorn * portion of the Covered Code, and must include terms to the effect that the 62209878Snwhitehorn * license from Licensee to its licensee is limited to the intellectual 63258502Sandreast * property embodied in the software Licensee provides to its licensee, and 64258502Sandreast * not to intellectual property embodied in modifications its licensee may 65231044Sandreast * make. 66209878Snwhitehorn * 67209878Snwhitehorn * 3.3. Redistribution of Executable. Redistribution in executable form of any 68209878Snwhitehorn * substantial portion of the Covered Code or modification must reproduce the 69209878Snwhitehorn * above Copyright Notice, and the following Disclaimer and Export Compliance 70218824Snwhitehorn * provision in the documentation and/or other materials provided with the 71209878Snwhitehorn * distribution. 72209878Snwhitehorn * 73209878Snwhitehorn * 3.4. Intel retains all right, title, and interest in and to the Original 74209878Snwhitehorn * Intel Code. 75209878Snwhitehorn * 76209878Snwhitehorn * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77231044Sandreast * Intel shall be used in advertising or otherwise to promote the sale, use or 78209878Snwhitehorn * other dealings in products derived from or relating to the Covered Code 79209878Snwhitehorn * without prior written authorization from Intel. 80258502Sandreast * 81258502Sandreast * 4. Disclaimer and Export Compliance 82258502Sandreast * 83231044Sandreast * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84209878Snwhitehorn * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85209878Snwhitehorn * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86209878Snwhitehorn * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87209878Snwhitehorn * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88209878Snwhitehorn * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89218824Snwhitehorn * PARTICULAR PURPOSE. 90209878Snwhitehorn * 91209878Snwhitehorn * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92209878Snwhitehorn * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93209878Snwhitehorn * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94209878Snwhitehorn * 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 <contrib/dev/acpica/acpi.h> 121#include <contrib/dev/acpica/acresrc.h> 122 123#define _COMPONENT ACPI_RESOURCES 124 ACPI_MODULE_NAME ("rsxface") 125 126/* Local macros for 16,32-bit to 64-bit conversion */ 127 128#define ACPI_COPY_FIELD(Out, In, Field) ((Out)->Field = (In)->Field) 129#define ACPI_COPY_ADDRESS(Out, In) \ 130 ACPI_COPY_FIELD(Out, In, ResourceType); \ 131 ACPI_COPY_FIELD(Out, In, ProducerConsumer); \ 132 ACPI_COPY_FIELD(Out, In, Decode); \ 133 ACPI_COPY_FIELD(Out, In, MinAddressFixed); \ 134 ACPI_COPY_FIELD(Out, In, MaxAddressFixed); \ 135 ACPI_COPY_FIELD(Out, In, Info); \ 136 ACPI_COPY_FIELD(Out, In, Granularity); \ 137 ACPI_COPY_FIELD(Out, In, Minimum); \ 138 ACPI_COPY_FIELD(Out, In, Maximum); \ 139 ACPI_COPY_FIELD(Out, In, TranslationOffset); \ 140 ACPI_COPY_FIELD(Out, In, AddressLength); \ 141 ACPI_COPY_FIELD(Out, In, ResourceSource); 142 143 144/******************************************************************************* 145 * 146 * FUNCTION: AcpiGetIrqRoutingTable 147 * 148 * PARAMETERS: DeviceHandle - a handle to the Bus device we are querying 149 * RetBuffer - a pointer to a buffer to receive the 150 * current resources for the device 151 * 152 * RETURN: Status 153 * 154 * DESCRIPTION: This function is called to get the IRQ routing table for a 155 * specific bus. The caller must first acquire a handle for the 156 * desired bus. The routine table is placed in the buffer pointed 157 * to by the RetBuffer variable parameter. 158 * 159 * If the function fails an appropriate status will be returned 160 * and the value of RetBuffer is undefined. 161 * 162 * This function attempts to execute the _PRT method contained in 163 * the object indicated by the passed DeviceHandle. 164 * 165 ******************************************************************************/ 166 167ACPI_STATUS 168AcpiGetIrqRoutingTable ( 169 ACPI_HANDLE DeviceHandle, 170 ACPI_BUFFER *RetBuffer) 171{ 172 ACPI_STATUS Status; 173 174 175 ACPI_FUNCTION_TRACE ("AcpiGetIrqRoutingTable "); 176 177 178 /* 179 * Must have a valid handle and buffer, So we have to have a handle 180 * and a return buffer structure, and if there is a non-zero buffer length 181 * we also need a valid pointer in the buffer. If it's a zero buffer length, 182 * we'll be returning the needed buffer size, so keep going. 183 */ 184 if (!DeviceHandle) 185 { 186 return_ACPI_STATUS (AE_BAD_PARAMETER); 187 } 188 189 Status = AcpiUtValidateBuffer (RetBuffer); 190 if (ACPI_FAILURE (Status)) 191 { 192 return_ACPI_STATUS (Status); 193 } 194 195 Status = AcpiRsGetPrtMethodData (DeviceHandle, RetBuffer); 196 return_ACPI_STATUS (Status); 197} 198 199 200/******************************************************************************* 201 * 202 * FUNCTION: AcpiGetCurrentResources 203 * 204 * PARAMETERS: DeviceHandle - a handle to the device object for the 205 * device we are querying 206 * RetBuffer - a pointer to a buffer to receive the 207 * current resources for the device 208 * 209 * RETURN: Status 210 * 211 * DESCRIPTION: This function is called to get the current resources for a 212 * specific device. The caller must first acquire a handle for 213 * the desired device. The resource data is placed in the buffer 214 * pointed to by the RetBuffer variable parameter. 215 * 216 * If the function fails an appropriate status will be returned 217 * and the value of RetBuffer is undefined. 218 * 219 * This function attempts to execute the _CRS method contained in 220 * the object indicated by the passed DeviceHandle. 221 * 222 ******************************************************************************/ 223 224ACPI_STATUS 225AcpiGetCurrentResources ( 226 ACPI_HANDLE DeviceHandle, 227 ACPI_BUFFER *RetBuffer) 228{ 229 ACPI_STATUS Status; 230 231 232 ACPI_FUNCTION_TRACE ("AcpiGetCurrentResources"); 233 234 235 /* 236 * Must have a valid handle and buffer, So we have to have a handle 237 * and a return buffer structure, and if there is a non-zero buffer length 238 * we also need a valid pointer in the buffer. If it's a zero buffer length, 239 * we'll be returning the needed buffer size, so keep going. 240 */ 241 if (!DeviceHandle) 242 { 243 return_ACPI_STATUS (AE_BAD_PARAMETER); 244 } 245 246 Status = AcpiUtValidateBuffer (RetBuffer); 247 if (ACPI_FAILURE (Status)) 248 { 249 return_ACPI_STATUS (Status); 250 } 251 252 Status = AcpiRsGetCrsMethodData (DeviceHandle, RetBuffer); 253 return_ACPI_STATUS (Status); 254} 255 256 257/******************************************************************************* 258 * 259 * FUNCTION: AcpiGetPossibleResources 260 * 261 * PARAMETERS: DeviceHandle - a handle to the device object for the 262 * device we are querying 263 * RetBuffer - a pointer to a buffer to receive the 264 * resources for the device 265 * 266 * RETURN: Status 267 * 268 * DESCRIPTION: This function is called to get a list of the possible resources 269 * for a specific device. The caller must first acquire a handle 270 * for the desired device. The resource data is placed in the 271 * buffer pointed to by the RetBuffer variable. 272 * 273 * If the function fails an appropriate status will be returned 274 * and the value of RetBuffer is undefined. 275 * 276 ******************************************************************************/ 277 278ACPI_STATUS 279AcpiGetPossibleResources ( 280 ACPI_HANDLE DeviceHandle, 281 ACPI_BUFFER *RetBuffer) 282{ 283 ACPI_STATUS Status; 284 285 286 ACPI_FUNCTION_TRACE ("AcpiGetPossibleResources"); 287 288 289 /* 290 * Must have a valid handle and buffer, So we have to have a handle 291 * and a return buffer structure, and if there is a non-zero buffer length 292 * we also need a valid pointer in the buffer. If it's a zero buffer length, 293 * we'll be returning the needed buffer size, so keep going. 294 */ 295 if (!DeviceHandle) 296 { 297 return_ACPI_STATUS (AE_BAD_PARAMETER); 298 } 299 300 Status = AcpiUtValidateBuffer (RetBuffer); 301 if (ACPI_FAILURE (Status)) 302 { 303 return_ACPI_STATUS (Status); 304 } 305 306 Status = AcpiRsGetPrsMethodData (DeviceHandle, RetBuffer); 307 return_ACPI_STATUS (Status); 308} 309 310 311/******************************************************************************* 312 * 313 * FUNCTION: AcpiWalkResources 314 * 315 * PARAMETERS: DeviceHandle - a handle to the device object for the 316 * device we are querying 317 * Path - method name of the resources we want 318 * (METHOD_NAME__CRS or METHOD_NAME__PRS) 319 * UserFunction - called for each resource 320 * Context - passed to UserFunction 321 * 322 * RETURN: Status 323 * 324 * DESCRIPTION: Retrieves the current or possible resource list for the 325 * specified device. The UserFunction is called once for 326 * each resource in the list. 327 * 328 ******************************************************************************/ 329 330ACPI_STATUS 331AcpiWalkResources ( 332 ACPI_HANDLE DeviceHandle, 333 char *Path, 334 ACPI_WALK_RESOURCE_CALLBACK UserFunction, 335 void *Context) 336{ 337 ACPI_STATUS Status; 338 ACPI_BUFFER Buffer = {ACPI_ALLOCATE_BUFFER, NULL}; 339 ACPI_RESOURCE *Resource; 340 ACPI_RESOURCE *BufferEnd; 341 342 343 ACPI_FUNCTION_TRACE ("AcpiWalkResources"); 344 345 346 if (!DeviceHandle || 347 (ACPI_STRNCMP (Path, METHOD_NAME__CRS, sizeof (METHOD_NAME__CRS)) && 348 ACPI_STRNCMP (Path, METHOD_NAME__PRS, sizeof (METHOD_NAME__PRS)))) 349 { 350 return_ACPI_STATUS (AE_BAD_PARAMETER); 351 } 352 353 Status = AcpiRsGetMethodData (DeviceHandle, Path, &Buffer); 354 if (ACPI_FAILURE (Status)) 355 { 356 return_ACPI_STATUS (Status); 357 } 358 359 /* Setup pointers */ 360 361 Resource = (ACPI_RESOURCE *) Buffer.Pointer; 362 BufferEnd = ACPI_CAST_PTR (ACPI_RESOURCE, 363 ((UINT8 *) Buffer.Pointer + Buffer.Length)); 364 365 /* Walk the resource list */ 366 367 for (;;) 368 { 369 if (!Resource || Resource->Type == ACPI_RESOURCE_TYPE_END_TAG) 370 { 371 break; 372 } 373 374 Status = UserFunction (Resource, Context); 375 376 switch (Status) 377 { 378 case AE_OK: 379 case AE_CTRL_DEPTH: 380 381 /* Just keep going */ 382 383 Status = AE_OK; 384 break; 385 386 case AE_CTRL_TERMINATE: 387 388 /* Exit now, with OK stats */ 389 390 Status = AE_OK; 391 goto Cleanup; 392 393 default: 394 395 /* All others are valid exceptions */ 396 397 goto Cleanup; 398 } 399 400 /* Get the next resource descriptor */ 401 402 Resource = ACPI_NEXT_RESOURCE (Resource); 403 404 /* Check for end-of-buffer */ 405 406 if (Resource >= BufferEnd) 407 { 408 goto Cleanup; 409 } 410 } 411 412Cleanup: 413 414 AcpiOsFree (Buffer.Pointer); 415 return_ACPI_STATUS (Status); 416} 417 418 419/******************************************************************************* 420 * 421 * FUNCTION: AcpiSetCurrentResources 422 * 423 * PARAMETERS: DeviceHandle - a handle to the device object for the 424 * device we are changing the resources of 425 * InBuffer - a pointer to a buffer containing the 426 * resources to be set for the device 427 * 428 * RETURN: Status 429 * 430 * DESCRIPTION: This function is called to set the current resources for a 431 * specific device. The caller must first acquire a handle for 432 * the desired device. The resource data is passed to the routine 433 * the buffer pointed to by the InBuffer variable. 434 * 435 ******************************************************************************/ 436 437ACPI_STATUS 438AcpiSetCurrentResources ( 439 ACPI_HANDLE DeviceHandle, 440 ACPI_BUFFER *InBuffer) 441{ 442 ACPI_STATUS Status; 443 444 445 ACPI_FUNCTION_TRACE ("AcpiSetCurrentResources"); 446 447 448 /* Must have a valid handle and buffer */ 449 450 if ((!DeviceHandle) || 451 (!InBuffer) || 452 (!InBuffer->Pointer) || 453 (!InBuffer->Length)) 454 { 455 return_ACPI_STATUS (AE_BAD_PARAMETER); 456 } 457 458 Status = AcpiRsSetSrsMethodData (DeviceHandle, InBuffer); 459 return_ACPI_STATUS (Status); 460} 461 462 463/****************************************************************************** 464 * 465 * FUNCTION: AcpiResourceToAddress64 466 * 467 * PARAMETERS: Resource - Pointer to a resource 468 * Out - Pointer to the users's return 469 * buffer (a struct 470 * acpi_resource_address64) 471 * 472 * RETURN: Status 473 * 474 * DESCRIPTION: If the resource is an address16, address32, or address64, 475 * copy it to the address64 return buffer. This saves the 476 * caller from having to duplicate code for different-sized 477 * addresses. 478 * 479 ******************************************************************************/ 480 481ACPI_STATUS 482AcpiResourceToAddress64 ( 483 ACPI_RESOURCE *Resource, 484 ACPI_RESOURCE_ADDRESS64 *Out) 485{ 486 ACPI_RESOURCE_ADDRESS16 *Address16; 487 ACPI_RESOURCE_ADDRESS32 *Address32; 488 489 490 switch (Resource->Type) 491 { 492 case ACPI_RESOURCE_TYPE_ADDRESS16: 493 494 Address16 = (ACPI_RESOURCE_ADDRESS16 *) &Resource->Data; 495 ACPI_COPY_ADDRESS (Out, Address16); 496 break; 497 498 case ACPI_RESOURCE_TYPE_ADDRESS32: 499 500 Address32 = (ACPI_RESOURCE_ADDRESS32 *) &Resource->Data; 501 ACPI_COPY_ADDRESS (Out, Address32); 502 break; 503 504 case ACPI_RESOURCE_TYPE_ADDRESS64: 505 506 /* Simple copy for 64 bit source */ 507 508 ACPI_MEMCPY (Out, &Resource->Data, sizeof (ACPI_RESOURCE_ADDRESS64)); 509 break; 510 511 default: 512 return (AE_BAD_PARAMETER); 513 } 514 515 return (AE_OK); 516} 517