uteval.c revision 77424
1/****************************************************************************** 2 * 3 * Module Name: uteval - Object evaluation 4 * $Revision: 27 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 __UTEVAL_C__ 118 119#include "acpi.h" 120#include "acnamesp.h" 121#include "acinterp.h" 122 123 124#define _COMPONENT ACPI_UTILITIES 125 MODULE_NAME ("uteval") 126 127 128/******************************************************************************* 129 * 130 * FUNCTION: AcpiUtEvaluateNumericObject 131 * 132 * PARAMETERS: *ObjectName - Object name to be evaluated 133 * DeviceNode - Node for the device 134 * *Address - Where the value is returned 135 * 136 * RETURN: Status 137 * 138 * DESCRIPTION: evaluates a numeric namespace object for a selected device 139 * and stores results in *Address. 140 * 141 * NOTE: Internal function, no parameter validation 142 * 143 ******************************************************************************/ 144 145ACPI_STATUS 146AcpiUtEvaluateNumericObject ( 147 NATIVE_CHAR *ObjectName, 148 ACPI_NAMESPACE_NODE *DeviceNode, 149 ACPI_INTEGER *Address) 150{ 151 ACPI_OPERAND_OBJECT *ObjDesc; 152 ACPI_STATUS Status; 153 154 155 FUNCTION_TRACE ("UtEvaluateNumericObject"); 156 157 158 /* Execute the method */ 159 160 Status = AcpiNsEvaluateRelative (DeviceNode, ObjectName, NULL, &ObjDesc); 161 if (ACPI_FAILURE (Status)) 162 { 163 if (Status == AE_NOT_FOUND) 164 { 165 DEBUG_PRINTP (ACPI_INFO, ("%s on %4.4s was not found\n", 166 ObjectName, &DeviceNode->Name)); 167 } 168 else 169 { 170 DEBUG_PRINTP (ACPI_ERROR, ("%s on %4.4s failed with status %s\n", 171 ObjectName, &DeviceNode->Name, 172 AcpiUtFormatException (Status))); 173 } 174 175 return_ACPI_STATUS (Status); 176 } 177 178 179 /* Did we get a return object? */ 180 181 if (!ObjDesc) 182 { 183 DEBUG_PRINTP (ACPI_ERROR, ("No object was returned from %s\n", 184 ObjectName)); 185 return_ACPI_STATUS (AE_TYPE); 186 } 187 188 /* Is the return object of the correct type? */ 189 190 if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER) 191 { 192 Status = AE_TYPE; 193 DEBUG_PRINTP (ACPI_ERROR, 194 ("Type returned from %s was not a number: %X \n", 195 ObjectName, ObjDesc->Common.Type)); 196 } 197 else 198 { 199 /* 200 * Since the structure is a union, setting any field will set all 201 * of the variables in the union 202 */ 203 *Address = ObjDesc->Integer.Value; 204 } 205 206 /* On exit, we must delete the return object */ 207 208 AcpiUtRemoveReference (ObjDesc); 209 210 return_ACPI_STATUS (Status); 211} 212 213 214/******************************************************************************* 215 * 216 * FUNCTION: AcpiUtExecute_HID 217 * 218 * PARAMETERS: DeviceNode - Node for the device 219 * *Hid - Where the HID is returned 220 * 221 * RETURN: Status 222 * 223 * DESCRIPTION: Executes the _HID control method that returns the hardware 224 * ID of the device. 225 * 226 * NOTE: Internal function, no parameter validation 227 * 228 ******************************************************************************/ 229 230ACPI_STATUS 231AcpiUtExecute_HID ( 232 ACPI_NAMESPACE_NODE *DeviceNode, 233 ACPI_DEVICE_ID *Hid) 234{ 235 ACPI_OPERAND_OBJECT *ObjDesc; 236 ACPI_STATUS Status; 237 238 239 FUNCTION_TRACE ("UtExecute_HID"); 240 241 242 /* Execute the method */ 243 244 Status = AcpiNsEvaluateRelative (DeviceNode, 245 METHOD_NAME__HID, NULL, &ObjDesc); 246 if (ACPI_FAILURE (Status)) 247 { 248 if (Status == AE_NOT_FOUND) 249 { 250 DEBUG_PRINTP (ACPI_INFO, ("_HID on %4.4s was not found\n", 251 &DeviceNode->Name)); 252 } 253 254 else 255 { 256 DEBUG_PRINTP (ACPI_ERROR, ("_HID on %4.4s failed %s\n", 257 &DeviceNode->Name, AcpiUtFormatException (Status))); 258 } 259 260 return_ACPI_STATUS (Status); 261 } 262 263 /* Did we get a return object? */ 264 265 if (!ObjDesc) 266 { 267 DEBUG_PRINTP (ACPI_ERROR, ("No object was returned from _HID\n")); 268 return_ACPI_STATUS (AE_TYPE); 269 } 270 271 /* 272 * A _HID can return either a Number (32 bit compressed EISA ID) or 273 * a string 274 */ 275 if ((ObjDesc->Common.Type != ACPI_TYPE_INTEGER) && 276 (ObjDesc->Common.Type != ACPI_TYPE_STRING)) 277 { 278 Status = AE_TYPE; 279 DEBUG_PRINTP (ACPI_ERROR, 280 ("Type returned from _HID not a number or string: %s(%X) \n", 281 AcpiUtGetTypeName (ObjDesc->Common.Type), ObjDesc->Common.Type)); 282 } 283 284 else 285 { 286 if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER) 287 { 288 /* Convert the Numeric HID to string */ 289 290 AcpiExEisaIdToString ((UINT32) ObjDesc->Integer.Value, Hid->Buffer); 291 } 292 293 else 294 { 295 /* Copy the String HID from the returned object */ 296 297 STRNCPY(Hid->Buffer, ObjDesc->String.Pointer, sizeof(Hid->Buffer)); 298 } 299 } 300 301 302 /* On exit, we must delete the return object */ 303 304 AcpiUtRemoveReference (ObjDesc); 305 306 return_ACPI_STATUS (Status); 307} 308 309 310/******************************************************************************* 311 * 312 * FUNCTION: AcpiUtExecute_UID 313 * 314 * PARAMETERS: DeviceNode - Node for the device 315 * *Uid - Where the UID is returned 316 * 317 * RETURN: Status 318 * 319 * DESCRIPTION: Executes the _UID control method that returns the hardware 320 * ID of the device. 321 * 322 * NOTE: Internal function, no parameter validation 323 * 324 ******************************************************************************/ 325 326ACPI_STATUS 327AcpiUtExecute_UID ( 328 ACPI_NAMESPACE_NODE *DeviceNode, 329 ACPI_DEVICE_ID *Uid) 330{ 331 ACPI_OPERAND_OBJECT *ObjDesc; 332 ACPI_STATUS Status; 333 334 335 PROC_NAME ("UtExecute_UID"); 336 337 338 /* Execute the method */ 339 340 Status = AcpiNsEvaluateRelative (DeviceNode, 341 METHOD_NAME__UID, NULL, &ObjDesc); 342 if (ACPI_FAILURE (Status)) 343 { 344 if (Status == AE_NOT_FOUND) 345 { 346 DEBUG_PRINTP (ACPI_INFO, ("_UID on %4.4s was not found\n", 347 &DeviceNode->Name)); 348 } 349 350 else 351 { 352 DEBUG_PRINTP (ACPI_ERROR, 353 ("_UID on %4.4s failed %s\n", 354 &DeviceNode->Name, AcpiUtFormatException (Status))); 355 } 356 357 return (Status); 358 } 359 360 /* Did we get a return object? */ 361 362 if (!ObjDesc) 363 { 364 DEBUG_PRINTP (ACPI_ERROR, ("No object was returned from _UID\n")); 365 return (AE_TYPE); 366 } 367 368 /* 369 * A _UID can return either a Number (32 bit compressed EISA ID) or 370 * a string 371 */ 372 if ((ObjDesc->Common.Type != ACPI_TYPE_INTEGER) && 373 (ObjDesc->Common.Type != ACPI_TYPE_STRING)) 374 { 375 Status = AE_TYPE; 376 DEBUG_PRINTP (ACPI_ERROR, 377 ("Type returned from _UID was not a number or string: %X \n", 378 ObjDesc->Common.Type)); 379 } 380 381 else 382 { 383 if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER) 384 { 385 /* Convert the Numeric UID to string */ 386 387 AcpiExUnsignedIntegerToString (ObjDesc->Integer.Value, Uid->Buffer); 388 } 389 390 else 391 { 392 /* Copy the String UID from the returned object */ 393 394 STRNCPY(Uid->Buffer, ObjDesc->String.Pointer, sizeof(Uid->Buffer)); 395 } 396 } 397 398 399 /* On exit, we must delete the return object */ 400 401 AcpiUtRemoveReference (ObjDesc); 402 403 return (Status); 404} 405 406 407/******************************************************************************* 408 * 409 * FUNCTION: AcpiUtExecute_STA 410 * 411 * PARAMETERS: DeviceNode - Node for the device 412 * *Flags - Where the status flags are returned 413 * 414 * RETURN: Status 415 * 416 * DESCRIPTION: Executes _STA for selected device and stores results in 417 * *Flags. 418 * 419 * NOTE: Internal function, no parameter validation 420 * 421 ******************************************************************************/ 422 423ACPI_STATUS 424AcpiUtExecute_STA ( 425 ACPI_NAMESPACE_NODE *DeviceNode, 426 UINT32 *Flags) 427{ 428 ACPI_OPERAND_OBJECT *ObjDesc; 429 ACPI_STATUS Status; 430 431 432 FUNCTION_TRACE ("UtExecute_STA"); 433 434 435 /* Execute the method */ 436 437 Status = AcpiNsEvaluateRelative (DeviceNode, 438 METHOD_NAME__STA, NULL, &ObjDesc); 439 if (AE_NOT_FOUND == Status) 440 { 441 DEBUG_PRINTP (ACPI_INFO, 442 ("_STA on %4.4s was not found, assuming present.\n", 443 &DeviceNode->Name)); 444 445 *Flags = 0x0F; 446 Status = AE_OK; 447 } 448 449 else if (ACPI_FAILURE (Status)) 450 { 451 DEBUG_PRINTP (ACPI_ERROR, ("_STA on %4.4s failed %s\n", 452 &DeviceNode->Name, 453 AcpiUtFormatException (Status))); 454 } 455 456 else /* success */ 457 { 458 /* Did we get a return object? */ 459 460 if (!ObjDesc) 461 { 462 DEBUG_PRINTP (ACPI_ERROR, ("No object was returned from _STA\n")); 463 return_ACPI_STATUS (AE_TYPE); 464 } 465 466 /* Is the return object of the correct type? */ 467 468 if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER) 469 { 470 Status = AE_TYPE; 471 DEBUG_PRINTP (ACPI_ERROR, 472 ("Type returned from _STA was not a number: %X \n", 473 ObjDesc->Common.Type)); 474 } 475 476 else 477 { 478 /* Extract the status flags */ 479 480 *Flags = (UINT32) ObjDesc->Integer.Value; 481 } 482 483 /* On exit, we must delete the return object */ 484 485 AcpiUtRemoveReference (ObjDesc); 486 } 487 488 return_ACPI_STATUS (Status); 489} 490