rsutils.c revision 151600
1/******************************************************************************* 2 * 3 * Module Name: rsutils - Utilities for the resource manager 4 * $Revision: 39 $ 5 * 6 ******************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2004, 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 __RSUTILS_C__ 119 120#include <contrib/dev/acpica/acpi.h> 121#include <contrib/dev/acpica/acnamesp.h> 122#include <contrib/dev/acpica/acresrc.h> 123 124 125#define _COMPONENT ACPI_RESOURCES 126 ACPI_MODULE_NAME ("rsutils") 127 128 129/******************************************************************************* 130 * 131 * FUNCTION: AcpiRsGetPrtMethodData 132 * 133 * PARAMETERS: Handle - a handle to the containing object 134 * RetBuffer - a pointer to a buffer structure for the 135 * results 136 * 137 * RETURN: Status 138 * 139 * DESCRIPTION: This function is called to get the _PRT value of an object 140 * contained in an object specified by the handle passed in 141 * 142 * If the function fails an appropriate status will be returned 143 * and the contents of the callers buffer is undefined. 144 * 145 ******************************************************************************/ 146 147ACPI_STATUS 148AcpiRsGetPrtMethodData ( 149 ACPI_HANDLE Handle, 150 ACPI_BUFFER *RetBuffer) 151{ 152 ACPI_OPERAND_OBJECT *ObjDesc; 153 ACPI_STATUS Status; 154 155 156 ACPI_FUNCTION_TRACE ("RsGetPrtMethodData"); 157 158 159 /* Parameters guaranteed valid by caller */ 160 161 /* 162 * Execute the method, no parameters 163 */ 164 Status = AcpiUtEvaluateObject (Handle, "_PRT", ACPI_BTYPE_PACKAGE, &ObjDesc); 165 if (ACPI_FAILURE (Status)) 166 { 167 return_ACPI_STATUS (Status); 168 } 169 170 /* 171 * Create a resource linked list from the byte stream buffer that comes 172 * back from the _CRS method execution. 173 */ 174 Status = AcpiRsCreatePciRoutingTable (ObjDesc, RetBuffer); 175 176 /* On exit, we must delete the object returned by EvaluateObject */ 177 178 AcpiUtRemoveReference (ObjDesc); 179 return_ACPI_STATUS (Status); 180} 181 182 183/******************************************************************************* 184 * 185 * FUNCTION: AcpiRsGetCrsMethodData 186 * 187 * PARAMETERS: Handle - a handle to the containing object 188 * RetBuffer - a pointer to a buffer structure for the 189 * results 190 * 191 * RETURN: Status 192 * 193 * DESCRIPTION: This function is called to get the _CRS value of an object 194 * contained in an object specified by the handle passed in 195 * 196 * If the function fails an appropriate status will be returned 197 * and the contents of the callers buffer is undefined. 198 * 199 ******************************************************************************/ 200 201ACPI_STATUS 202AcpiRsGetCrsMethodData ( 203 ACPI_HANDLE Handle, 204 ACPI_BUFFER *RetBuffer) 205{ 206 ACPI_OPERAND_OBJECT *ObjDesc; 207 ACPI_STATUS Status; 208 209 210 ACPI_FUNCTION_TRACE ("RsGetCrsMethodData"); 211 212 213 /* Parameters guaranteed valid by caller */ 214 215 /* 216 * Execute the method, no parameters 217 */ 218 Status = AcpiUtEvaluateObject (Handle, "_CRS", ACPI_BTYPE_BUFFER, &ObjDesc); 219 if (ACPI_FAILURE (Status)) 220 { 221 return_ACPI_STATUS (Status); 222 } 223 224 /* 225 * Make the call to create a resource linked list from the 226 * byte stream buffer that comes back from the _CRS method 227 * execution. 228 */ 229 Status = AcpiRsCreateResourceList (ObjDesc, RetBuffer); 230 231 /* On exit, we must delete the object returned by evaluateObject */ 232 233 AcpiUtRemoveReference (ObjDesc); 234 return_ACPI_STATUS (Status); 235} 236 237 238/******************************************************************************* 239 * 240 * FUNCTION: AcpiRsGetPrsMethodData 241 * 242 * PARAMETERS: Handle - a handle to the containing object 243 * RetBuffer - a pointer to a buffer structure for the 244 * results 245 * 246 * RETURN: Status 247 * 248 * DESCRIPTION: This function is called to get the _PRS value of an object 249 * contained in an object specified by the handle passed in 250 * 251 * If the function fails an appropriate status will be returned 252 * and the contents of the callers buffer is undefined. 253 * 254 ******************************************************************************/ 255 256ACPI_STATUS 257AcpiRsGetPrsMethodData ( 258 ACPI_HANDLE Handle, 259 ACPI_BUFFER *RetBuffer) 260{ 261 ACPI_OPERAND_OBJECT *ObjDesc; 262 ACPI_STATUS Status; 263 264 265 ACPI_FUNCTION_TRACE ("RsGetPrsMethodData"); 266 267 268 /* Parameters guaranteed valid by caller */ 269 270 /* 271 * Execute the method, no parameters 272 */ 273 Status = AcpiUtEvaluateObject (Handle, "_PRS", ACPI_BTYPE_BUFFER, &ObjDesc); 274 if (ACPI_FAILURE (Status)) 275 { 276 return_ACPI_STATUS (Status); 277 } 278 279 /* 280 * Make the call to create a resource linked list from the 281 * byte stream buffer that comes back from the _CRS method 282 * execution. 283 */ 284 Status = AcpiRsCreateResourceList (ObjDesc, RetBuffer); 285 286 /* On exit, we must delete the object returned by evaluateObject */ 287 288 AcpiUtRemoveReference (ObjDesc); 289 return_ACPI_STATUS (Status); 290} 291 292 293/******************************************************************************* 294 * 295 * FUNCTION: AcpiRsGetMethodData 296 * 297 * PARAMETERS: Handle - a handle to the containing object 298 * RetBuffer - a pointer to a buffer structure for the 299 * results 300 * 301 * RETURN: Status 302 * 303 * DESCRIPTION: This function is called to get the _CRS or _PRS value of an 304 * object contained in an object specified by the handle passed in 305 * 306 * If the function fails an appropriate status will be returned 307 * and the contents of the callers buffer is undefined. 308 * 309 ******************************************************************************/ 310 311ACPI_STATUS 312AcpiRsGetMethodData ( 313 ACPI_HANDLE Handle, 314 char *Path, 315 ACPI_BUFFER *RetBuffer) 316{ 317 ACPI_OPERAND_OBJECT *ObjDesc; 318 ACPI_STATUS Status; 319 320 321 ACPI_FUNCTION_TRACE ("RsGetMethodData"); 322 323 324 /* Parameters guaranteed valid by caller */ 325 326 /* 327 * Execute the method, no parameters 328 */ 329 Status = AcpiUtEvaluateObject (Handle, Path, ACPI_BTYPE_BUFFER, &ObjDesc); 330 if (ACPI_FAILURE (Status)) { 331 return_ACPI_STATUS (Status); 332 } 333 334 /* 335 * Make the call to create a resource linked list from the 336 * byte stream buffer that comes back from the method 337 * execution. 338 */ 339 Status = AcpiRsCreateResourceList (ObjDesc, RetBuffer); 340 341 /* On exit, we must delete the object returned by EvaluateObject */ 342 343 AcpiUtRemoveReference (ObjDesc); 344 return_ACPI_STATUS (Status); 345} 346 347/******************************************************************************* 348 * 349 * FUNCTION: AcpiRsSetSrsMethodData 350 * 351 * PARAMETERS: Handle - a handle to the containing object 352 * InBuffer - a pointer to a buffer structure of the 353 * parameter 354 * 355 * RETURN: Status 356 * 357 * DESCRIPTION: This function is called to set the _SRS of an object contained 358 * in an object specified by the handle passed in 359 * 360 * If the function fails an appropriate status will be returned 361 * and the contents of the callers buffer is undefined. 362 * 363 ******************************************************************************/ 364 365ACPI_STATUS 366AcpiRsSetSrsMethodData ( 367 ACPI_HANDLE Handle, 368 ACPI_BUFFER *InBuffer) 369{ 370 ACPI_PARAMETER_INFO Info; 371 ACPI_OPERAND_OBJECT *Params[2]; 372 ACPI_STATUS Status; 373 ACPI_BUFFER Buffer; 374 375 376 ACPI_FUNCTION_TRACE ("RsSetSrsMethodData"); 377 378 379 /* Parameters guaranteed valid by caller */ 380 381 /* 382 * The InBuffer parameter will point to a linked list of 383 * resource parameters. It needs to be formatted into a 384 * byte stream to be sent in as an input parameter to _SRS 385 * 386 * Convert the linked list into a byte stream 387 */ 388 Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 389 Status = AcpiRsCreateByteStream (InBuffer->Pointer, &Buffer); 390 if (ACPI_FAILURE (Status)) 391 { 392 return_ACPI_STATUS (Status); 393 } 394 395 /* 396 * Init the param object 397 */ 398 Params[0] = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER); 399 if (!Params[0]) 400 { 401 AcpiOsFree (Buffer.Pointer); 402 return_ACPI_STATUS (AE_NO_MEMORY); 403 } 404 405 /* 406 * Set up the parameter object 407 */ 408 Params[0]->Buffer.Length = (UINT32) Buffer.Length; 409 Params[0]->Buffer.Pointer = Buffer.Pointer; 410 Params[0]->Common.Flags = AOPOBJ_DATA_VALID; 411 Params[1] = NULL; 412 413 Info.Node = Handle; 414 Info.Parameters = Params; 415 Info.ParameterType = ACPI_PARAM_ARGS; 416 417 /* 418 * Execute the method, no return value 419 */ 420 Status = AcpiNsEvaluateRelative ("_SRS", &Info); 421 422 /* 423 * Clean up and return the status from AcpiNsEvaluateRelative 424 */ 425 AcpiUtRemoveReference (Params[0]); 426 return_ACPI_STATUS (Status); 427} 428 429