utxface.c revision 69450
1106184Smarcel/****************************************************************************** 2139601Smarcel * 3106184Smarcel * Module Name: cmxface - External interfaces for "global" ACPI functions 4106184Smarcel * $Revision: 54 $ 5106184Smarcel * 6106184Smarcel *****************************************************************************/ 7106184Smarcel 8106184Smarcel/****************************************************************************** 9106184Smarcel * 10106184Smarcel * 1. Copyright Notice 11106184Smarcel * 12106184Smarcel * Some or all of this work - Copyright (c) 1999, Intel Corp. All rights 13106184Smarcel * reserved. 14106184Smarcel * 15106184Smarcel * 2. License 16106184Smarcel * 17106184Smarcel * 2.1. This is your license from Intel Corp. under its intellectual property 18106184Smarcel * rights. You may have additional license terms from the party that provided 19106184Smarcel * you this software, covering your right to use that party's intellectual 20106184Smarcel * property rights. 21106184Smarcel * 22106184Smarcel * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23106184Smarcel * copy of the source code appearing in this file ("Covered Code") an 24106184Smarcel * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25106184Smarcel * base code distributed originally by Intel ("Original Intel Code") to copy, 26106184Smarcel * make derivatives, distribute, use and display any portion of the Covered 27106184Smarcel * Code in any form, with the right to sublicense such rights; and 28106184Smarcel * 29106184Smarcel * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30106184Smarcel * license (with the right to sublicense), under only those claims of Intel 31106184Smarcel * patents that are infringed by the Original Intel Code, to make, use, sell, 32106184Smarcel * offer to sell, and import the Covered Code and derivative works thereof 33106184Smarcel * solely to the minimum extent necessary to exercise the above copyright 34106184Smarcel * license, and in no event shall the patent license extend to any additions 35106184Smarcel * to or modifications of the Original Intel Code. No other license or right 36106184Smarcel * is granted directly or by implication, estoppel or otherwise; 37106184Smarcel * 38106184Smarcel * The above copyright and patent license is granted only if the following 39139601Smarcel * conditions are met: 40106184Smarcel * 41106184Smarcel * 3. Conditions 42106184Smarcel * 43106184Smarcel * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44106184Smarcel * Redistribution of source code of any substantial portion of the Covered 45106184Smarcel * Code or modification with rights to further distribute source must include 46106184Smarcel * the above Copyright Notice, the above License, this list of Conditions, 47106184Smarcel * and the following Disclaimer and Export Compliance provision. In addition, 48106184Smarcel * Licensee must cause all Covered Code to which Licensee contributes to 49106184Smarcel * contain a file documenting the changes Licensee made to create that Covered 50106184Smarcel * Code and the date of any change. Licensee must include in that file the 51106184Smarcel * documentation of any changes made by any predecessor Licensee. Licensee 52106184Smarcel * must include a prominent statement that the modification is derived, 53106184Smarcel * directly or indirectly, from Original Intel Code. 54106184Smarcel * 55106184Smarcel * 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 __CMXFACE_C__ 119 120#include "acpi.h" 121#include "acevents.h" 122#include "achware.h" 123#include "acnamesp.h" 124#include "acinterp.h" 125#include "amlcode.h" 126#include "acdebug.h" 127 128 129#define _COMPONENT MISCELLANEOUS 130 MODULE_NAME ("cmxface") 131 132 133/******************************************************************************* 134 * 135 * FUNCTION: AcpiInitializeSubsystem 136 * 137 * PARAMETERS: None 138 * 139 * RETURN: Status 140 * 141 * DESCRIPTION: Initializes all global variables. This is the first function 142 * called, so any early initialization belongs here. 143 * 144 ******************************************************************************/ 145 146ACPI_STATUS 147AcpiInitializeSubsystem ( 148 void) 149{ 150 ACPI_STATUS Status; 151 152 153 FUNCTION_TRACE ("AcpiInitializeSubsystem"); 154 155 DEBUG_PRINT_RAW (ACPI_OK, 156 ("ACPI Subsystem version [%s]\n", ACPI_CA_VERSION)); 157 DEBUG_PRINT (ACPI_INFO, ("Initializing ACPI Subsystem...\n")); 158 159 160 /* Initialize all globals used by the subsystem */ 161 162 AcpiCmInitGlobals (); 163 164 /* Initialize the OS-Dependent layer */ 165 166 Status = AcpiOsInitialize (); 167 if (ACPI_FAILURE (Status)) 168 { 169 REPORT_ERROR (("OSD failed to initialize, %s\n", 170 AcpiCmFormatException (Status))); 171 return_ACPI_STATUS (Status); 172 } 173 174 /* Create the default mutex objects */ 175 176 Status = AcpiCmMutexInitialize (); 177 if (ACPI_FAILURE (Status)) 178 { 179 REPORT_ERROR (("Global mutex creation failure, %s\n", 180 AcpiCmFormatException (Status))); 181 return_ACPI_STATUS (Status); 182 } 183 184 /* 185 * Initialize the namespace manager and 186 * the root of the namespace tree 187 */ 188 189 Status = AcpiNsRootInitialize (); 190 if (ACPI_FAILURE (Status)) 191 { 192 REPORT_ERROR (("Namespace initialization failure, %s\n", 193 AcpiCmFormatException (Status))); 194 return_ACPI_STATUS (Status); 195 } 196 197 198 /* If configured, initialize the AML debugger */ 199 200 DEBUGGER_EXEC (AcpiDbInitialize ()); 201 202 return_ACPI_STATUS (Status); 203} 204 205 206/******************************************************************************* 207 * 208 * FUNCTION: AcpiEnableSubsystem 209 * 210 * PARAMETERS: Flags - Init/enable Options 211 * 212 * RETURN: Status 213 * 214 * DESCRIPTION: Completes the subsystem initialization including hardware. 215 * Puts system into ACPI mode if it isn't already. 216 * 217 ******************************************************************************/ 218 219ACPI_STATUS 220AcpiEnableSubsystem ( 221 UINT32 Flags) 222{ 223 ACPI_STATUS Status = AE_OK; 224 225 226 FUNCTION_TRACE ("AcpiEnableSubsystem"); 227 228 229 /* Sanity check the FADT for valid values */ 230 231 Status = AcpiCmValidateFadt (); 232 if (ACPI_FAILURE (Status)) 233 { 234 return_ACPI_STATUS (Status); 235 } 236 237 /* 238 * Install the default OpRegion handlers. These are 239 * installed unless other handlers have already been 240 * installed via the InstallAddressSpaceHandler interface 241 */ 242 243 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT)) 244 { 245 DEBUG_PRINT (TRACE_EXEC, ("[Init] Installing default address space handlers\n")); 246 247 Status = AcpiEvInstallDefaultAddressSpaceHandlers (); 248 if (ACPI_FAILURE (Status)) 249 { 250 return_ACPI_STATUS (Status); 251 } 252 } 253 254 /* 255 * We must initialize the hardware before we can enable ACPI. 256 */ 257 258 if (!(Flags & ACPI_NO_HARDWARE_INIT)) 259 { 260 DEBUG_PRINT (TRACE_EXEC, ("[Init] Initializing ACPI hardware\n")); 261 262 Status = AcpiHwInitialize (); 263 if (ACPI_FAILURE (Status)) 264 { 265 return_ACPI_STATUS (Status); 266 } 267 } 268 269 /* 270 * Enable ACPI on this platform 271 */ 272 273 if (!(Flags & ACPI_NO_ACPI_ENABLE)) 274 { 275 DEBUG_PRINT (TRACE_EXEC, ("[Init] Going into ACPI mode\n")); 276 277 Status = AcpiEnable (); 278 if (ACPI_FAILURE (Status)) 279 { 280 return_ACPI_STATUS (Status); 281 } 282 } 283 284 /* 285 * Note: 286 * We must have the hardware AND events initialized before we can execute 287 * ANY control methods SAFELY. Any control method can require ACPI hardware 288 * support, so the hardware MUST be initialized before execution! 289 */ 290 291 if (!(Flags & ACPI_NO_EVENT_INIT)) 292 { 293 DEBUG_PRINT (TRACE_EXEC, ("[Init] Initializing ACPI events\n")); 294 295 Status = AcpiEvInitialize (); 296 if (ACPI_FAILURE (Status)) 297 { 298 return_ACPI_STATUS (Status); 299 } 300 } 301 302 303 /* 304 * Initialize all device objects in the namespace 305 * This runs the _STA, _INI, and _HID methods, and detects 306 * the PCI root bus(es) 307 */ 308 309 if (!(Flags & ACPI_NO_DEVICE_INIT)) 310 { 311 DEBUG_PRINT (TRACE_EXEC, ("[Init] Initializing ACPI Devices\n")); 312 313 Status = AcpiNsInitializeDevices (Flags & ACPI_NO_PCI_INIT); 314 if (ACPI_FAILURE (Status)) 315 { 316 return_ACPI_STATUS (Status); 317 } 318 } 319 320 321 /* 322 * Initialize the objects that remain unitialized. This 323 * runs the executable AML that is part of the declaration of OpRegions 324 * and Fields. 325 */ 326 327 if (!(Flags & ACPI_NO_OBJECT_INIT)) 328 { 329 DEBUG_PRINT (TRACE_EXEC, ("[Init] Initializing ACPI Objects\n")); 330 331 Status = AcpiNsInitializeObjects (); 332 if (ACPI_FAILURE (Status)) 333 { 334 return_ACPI_STATUS (Status); 335 } 336 } 337 338 339 return_ACPI_STATUS (Status); 340} 341 342 343/******************************************************************************* 344 * 345 * FUNCTION: AcpiTerminate 346 * 347 * PARAMETERS: None 348 * 349 * RETURN: Status 350 * 351 * DESCRIPTION: Shutdown the ACPI subsystem. Release all resources. 352 * 353 ******************************************************************************/ 354 355ACPI_STATUS 356AcpiTerminate (void) 357{ 358 359 FUNCTION_TRACE ("AcpiTerminate"); 360 361 /* Terminate the AML Debuger if present */ 362 363 DEBUGGER_EXEC(AcpiGbl_DbTerminateThreads = TRUE); 364 365 /* TBD: [Investigate] This is no longer needed?*/ 366/* AcpiCmReleaseMutex (ACPI_MTX_DEBUG_CMD_READY); */ 367 368 369 /* Shutdown and free all resources */ 370 371 AcpiCmSubsystemShutdown (); 372 373 374 /* Free the mutex objects */ 375 376 AcpiCmMutexTerminate (); 377 378 379 /* Now we can shutdown the OS-dependent layer */ 380 381 AcpiOsTerminate (); 382 383 return_ACPI_STATUS (AE_OK); 384} 385 386 387/****************************************************************************** 388 * 389 * FUNCTION: AcpiGetSystemInfo 390 * 391 * PARAMETERS: OutBuffer - a pointer to a buffer to receive the 392 * resources for the device 393 * BufferLength - the number of bytes available in the buffer 394 * 395 * RETURN: Status - the status of the call 396 * 397 * DESCRIPTION: This function is called to get information about the current 398 * state of the ACPI subsystem. It will return system information 399 * in the OutBuffer. 400 * 401 * If the function fails an appropriate status will be returned 402 * and the value of OutBuffer is undefined. 403 * 404 ******************************************************************************/ 405 406ACPI_STATUS 407AcpiGetSystemInfo ( 408 ACPI_BUFFER *OutBuffer) 409{ 410 ACPI_SYSTEM_INFO *InfoPtr; 411 UINT32 i; 412 413 414 FUNCTION_TRACE ("AcpiGetSystemInfo"); 415 416 417 /* 418 * Must have a valid buffer 419 */ 420 if ((!OutBuffer) || 421 (!OutBuffer->Pointer)) 422 { 423 return_ACPI_STATUS (AE_BAD_PARAMETER); 424 } 425 426 if (OutBuffer->Length < sizeof (ACPI_SYSTEM_INFO)) 427 { 428 /* 429 * Caller's buffer is too small 430 */ 431 OutBuffer->Length = sizeof (ACPI_SYSTEM_INFO); 432 433 return_ACPI_STATUS (AE_BUFFER_OVERFLOW); 434 } 435 436 437 /* 438 * Set return length and get data 439 */ 440 OutBuffer->Length = sizeof (ACPI_SYSTEM_INFO); 441 InfoPtr = (ACPI_SYSTEM_INFO *) OutBuffer->Pointer; 442 443 /* TBD [Future]: need a version number, or use the version string */ 444 InfoPtr->AcpiCaVersion = 0x1234; 445 446 /* System flags (ACPI capabilities) */ 447 448 InfoPtr->Flags = AcpiGbl_SystemFlags; 449 450 /* Timer resolution - 24 or 32 bits */ 451 452 InfoPtr->TimerResolution = AcpiHwPmtResolution (); 453 454 /* Clear the reserved fields */ 455 456 InfoPtr->Reserved1 = 0; 457 InfoPtr->Reserved2 = 0; 458 459 /* Current debug levels */ 460 461 InfoPtr->DebugLayer = AcpiDbgLayer; 462 InfoPtr->DebugLevel = AcpiDbgLevel; 463 464 /* Current status of the ACPI tables, per table type */ 465 466 InfoPtr->NumTableTypes = NUM_ACPI_TABLES; 467 for (i = 0; i < NUM_ACPI_TABLES; i++) 468 { 469 InfoPtr->TableInfo[i].Count = AcpiGbl_AcpiTables[i].Count; 470 } 471 472 return_ACPI_STATUS (AE_OK); 473} 474 475 476/****************************************************************************** 477 * 478 * FUNCTION: AcpiFormatException 479 * 480 * PARAMETERS: OutBuffer - a pointer to a buffer to receive the 481 * exception name 482 * 483 * RETURN: Status - the status of the call 484 * 485 * DESCRIPTION: This function translates an ACPI exception into an ASCII string. 486 * 487 ******************************************************************************/ 488 489ACPI_STATUS 490AcpiFormatException ( 491 ACPI_STATUS Exception, 492 ACPI_BUFFER *OutBuffer) 493{ 494 UINT32 Length; 495 NATIVE_CHAR *FormattedException; 496 497 498 FUNCTION_TRACE ("AcpiFormatException"); 499 500 501 /* 502 * Must have a valid buffer 503 */ 504 if ((!OutBuffer) || 505 (!OutBuffer->Pointer)) 506 { 507 return_ACPI_STATUS (AE_BAD_PARAMETER); 508 } 509 510 511 /* Convert the exception code (Handles bad exception codes) */ 512 513 FormattedException = AcpiCmFormatException (Exception); 514 515 /* 516 * Get length of string and check if it will fit in caller's buffer 517 */ 518 519 Length = STRLEN (FormattedException); 520 if (OutBuffer->Length < Length) 521 { 522 OutBuffer->Length = Length; 523 return_ACPI_STATUS (AE_BUFFER_OVERFLOW); 524 } 525 526 527 /* Copy the string, all done */ 528 529 STRCPY (OutBuffer->Pointer, FormattedException); 530 531 return_ACPI_STATUS (AE_OK); 532} 533 534