tbxface.c revision 1.3.2.2
1 1.3.2.2 bouyer /****************************************************************************** 2 1.3.2.2 bouyer * 3 1.3.2.2 bouyer * Module Name: tbxface - Public interfaces to the ACPI subsystem 4 1.3.2.2 bouyer * ACPI table oriented interfaces 5 1.3.2.2 bouyer * 6 1.3.2.2 bouyer *****************************************************************************/ 7 1.3.2.2 bouyer 8 1.3.2.2 bouyer /* 9 1.3.2.2 bouyer * Copyright (C) 2000 - 2011, Intel Corp. 10 1.3.2.2 bouyer * All rights reserved. 11 1.3.2.2 bouyer * 12 1.3.2.2 bouyer * Redistribution and use in source and binary forms, with or without 13 1.3.2.2 bouyer * modification, are permitted provided that the following conditions 14 1.3.2.2 bouyer * are met: 15 1.3.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 16 1.3.2.2 bouyer * notice, this list of conditions, and the following disclaimer, 17 1.3.2.2 bouyer * without modification. 18 1.3.2.2 bouyer * 2. Redistributions in binary form must reproduce at minimum a disclaimer 19 1.3.2.2 bouyer * substantially similar to the "NO WARRANTY" disclaimer below 20 1.3.2.2 bouyer * ("Disclaimer") and any redistribution must be conditioned upon 21 1.3.2.2 bouyer * including a substantially similar Disclaimer requirement for further 22 1.3.2.2 bouyer * binary redistribution. 23 1.3.2.2 bouyer * 3. Neither the names of the above-listed copyright holders nor the names 24 1.3.2.2 bouyer * of any contributors may be used to endorse or promote products derived 25 1.3.2.2 bouyer * from this software without specific prior written permission. 26 1.3.2.2 bouyer * 27 1.3.2.2 bouyer * Alternatively, this software may be distributed under the terms of the 28 1.3.2.2 bouyer * GNU General Public License ("GPL") version 2 as published by the Free 29 1.3.2.2 bouyer * Software Foundation. 30 1.3.2.2 bouyer * 31 1.3.2.2 bouyer * NO WARRANTY 32 1.3.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 33 1.3.2.2 bouyer * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 34 1.3.2.2 bouyer * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 35 1.3.2.2 bouyer * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 36 1.3.2.2 bouyer * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 1.3.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 1.3.2.2 bouyer * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 1.3.2.2 bouyer * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40 1.3.2.2 bouyer * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 41 1.3.2.2 bouyer * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 1.3.2.2 bouyer * POSSIBILITY OF SUCH DAMAGES. 43 1.3.2.2 bouyer */ 44 1.3.2.2 bouyer 45 1.3.2.2 bouyer #define __TBXFACE_C__ 46 1.3.2.2 bouyer 47 1.3.2.2 bouyer #include "acpi.h" 48 1.3.2.2 bouyer #include "accommon.h" 49 1.3.2.2 bouyer #include "acnamesp.h" 50 1.3.2.2 bouyer #include "actables.h" 51 1.3.2.2 bouyer 52 1.3.2.2 bouyer #define _COMPONENT ACPI_TABLES 53 1.3.2.2 bouyer ACPI_MODULE_NAME ("tbxface") 54 1.3.2.2 bouyer 55 1.3.2.2 bouyer /* Local prototypes */ 56 1.3.2.2 bouyer 57 1.3.2.2 bouyer static ACPI_STATUS 58 1.3.2.2 bouyer AcpiTbLoadNamespace ( 59 1.3.2.2 bouyer void); 60 1.3.2.2 bouyer 61 1.3.2.2 bouyer 62 1.3.2.2 bouyer /******************************************************************************* 63 1.3.2.2 bouyer * 64 1.3.2.2 bouyer * FUNCTION: AcpiAllocateRootTable 65 1.3.2.2 bouyer * 66 1.3.2.2 bouyer * PARAMETERS: InitialTableCount - Size of InitialTableArray, in number of 67 1.3.2.2 bouyer * ACPI_TABLE_DESC structures 68 1.3.2.2 bouyer * 69 1.3.2.2 bouyer * RETURN: Status 70 1.3.2.2 bouyer * 71 1.3.2.2 bouyer * DESCRIPTION: Allocate a root table array. Used by iASL compiler and 72 1.3.2.2 bouyer * AcpiInitializeTables. 73 1.3.2.2 bouyer * 74 1.3.2.2 bouyer ******************************************************************************/ 75 1.3.2.2 bouyer 76 1.3.2.2 bouyer ACPI_STATUS 77 1.3.2.2 bouyer AcpiAllocateRootTable ( 78 1.3.2.2 bouyer UINT32 InitialTableCount) 79 1.3.2.2 bouyer { 80 1.3.2.2 bouyer 81 1.3.2.2 bouyer AcpiGbl_RootTableList.MaxTableCount = InitialTableCount; 82 1.3.2.2 bouyer AcpiGbl_RootTableList.Flags = ACPI_ROOT_ALLOW_RESIZE; 83 1.3.2.2 bouyer 84 1.3.2.2 bouyer return (AcpiTbResizeRootTableList ()); 85 1.3.2.2 bouyer } 86 1.3.2.2 bouyer 87 1.3.2.2 bouyer 88 1.3.2.2 bouyer /******************************************************************************* 89 1.3.2.2 bouyer * 90 1.3.2.2 bouyer * FUNCTION: AcpiInitializeTables 91 1.3.2.2 bouyer * 92 1.3.2.2 bouyer * PARAMETERS: InitialTableArray - Pointer to an array of pre-allocated 93 1.3.2.2 bouyer * ACPI_TABLE_DESC structures. If NULL, the 94 1.3.2.2 bouyer * array is dynamically allocated. 95 1.3.2.2 bouyer * InitialTableCount - Size of InitialTableArray, in number of 96 1.3.2.2 bouyer * ACPI_TABLE_DESC structures 97 1.3.2.2 bouyer * AllowRealloc - Flag to tell Table Manager if resize of 98 1.3.2.2 bouyer * pre-allocated array is allowed. Ignored 99 1.3.2.2 bouyer * if InitialTableArray is NULL. 100 1.3.2.2 bouyer * 101 1.3.2.2 bouyer * RETURN: Status 102 1.3.2.2 bouyer * 103 1.3.2.2 bouyer * DESCRIPTION: Initialize the table manager, get the RSDP and RSDT/XSDT. 104 1.3.2.2 bouyer * 105 1.3.2.2 bouyer * NOTE: Allows static allocation of the initial table array in order 106 1.3.2.2 bouyer * to avoid the use of dynamic memory in confined environments 107 1.3.2.2 bouyer * such as the kernel boot sequence where it may not be available. 108 1.3.2.2 bouyer * 109 1.3.2.2 bouyer * If the host OS memory managers are initialized, use NULL for 110 1.3.2.2 bouyer * InitialTableArray, and the table will be dynamically allocated. 111 1.3.2.2 bouyer * 112 1.3.2.2 bouyer ******************************************************************************/ 113 1.3.2.2 bouyer 114 1.3.2.2 bouyer ACPI_STATUS 115 1.3.2.2 bouyer AcpiInitializeTables ( 116 1.3.2.2 bouyer ACPI_TABLE_DESC *InitialTableArray, 117 1.3.2.2 bouyer UINT32 InitialTableCount, 118 1.3.2.2 bouyer BOOLEAN AllowResize) 119 1.3.2.2 bouyer { 120 1.3.2.2 bouyer ACPI_PHYSICAL_ADDRESS RsdpAddress; 121 1.3.2.2 bouyer ACPI_STATUS Status; 122 1.3.2.2 bouyer 123 1.3.2.2 bouyer 124 1.3.2.2 bouyer ACPI_FUNCTION_TRACE (AcpiInitializeTables); 125 1.3.2.2 bouyer 126 1.3.2.2 bouyer 127 1.3.2.2 bouyer /* 128 1.3.2.2 bouyer * Set up the Root Table Array 129 1.3.2.2 bouyer * Allocate the table array if requested 130 1.3.2.2 bouyer */ 131 1.3.2.2 bouyer if (!InitialTableArray) 132 1.3.2.2 bouyer { 133 1.3.2.2 bouyer Status = AcpiAllocateRootTable (InitialTableCount); 134 1.3.2.2 bouyer if (ACPI_FAILURE (Status)) 135 1.3.2.2 bouyer { 136 1.3.2.2 bouyer return_ACPI_STATUS (Status); 137 1.3.2.2 bouyer } 138 1.3.2.2 bouyer } 139 1.3.2.2 bouyer else 140 1.3.2.2 bouyer { 141 1.3.2.2 bouyer /* Root Table Array has been statically allocated by the host */ 142 1.3.2.2 bouyer 143 1.3.2.2 bouyer ACPI_MEMSET (InitialTableArray, 0, 144 1.3.2.2 bouyer (ACPI_SIZE) InitialTableCount * sizeof (ACPI_TABLE_DESC)); 145 1.3.2.2 bouyer 146 1.3.2.2 bouyer AcpiGbl_RootTableList.Tables = InitialTableArray; 147 1.3.2.2 bouyer AcpiGbl_RootTableList.MaxTableCount = InitialTableCount; 148 1.3.2.2 bouyer AcpiGbl_RootTableList.Flags = ACPI_ROOT_ORIGIN_UNKNOWN; 149 1.3.2.2 bouyer if (AllowResize) 150 1.3.2.2 bouyer { 151 1.3.2.2 bouyer AcpiGbl_RootTableList.Flags |= ACPI_ROOT_ALLOW_RESIZE; 152 1.3.2.2 bouyer } 153 1.3.2.2 bouyer } 154 1.3.2.2 bouyer 155 1.3.2.2 bouyer /* Get the address of the RSDP */ 156 1.3.2.2 bouyer 157 1.3.2.2 bouyer RsdpAddress = AcpiOsGetRootPointer (); 158 1.3.2.2 bouyer if (!RsdpAddress) 159 1.3.2.2 bouyer { 160 1.3.2.2 bouyer return_ACPI_STATUS (AE_NOT_FOUND); 161 1.3.2.2 bouyer } 162 1.3.2.2 bouyer 163 1.3.2.2 bouyer /* 164 1.3.2.2 bouyer * Get the root table (RSDT or XSDT) and extract all entries to the local 165 1.3.2.2 bouyer * Root Table Array. This array contains the information of the RSDT/XSDT 166 1.3.2.2 bouyer * in a common, more useable format. 167 1.3.2.2 bouyer */ 168 1.3.2.2 bouyer Status = AcpiTbParseRootTable (RsdpAddress); 169 1.3.2.2 bouyer return_ACPI_STATUS (Status); 170 1.3.2.2 bouyer } 171 1.3.2.2 bouyer 172 1.3.2.2 bouyer ACPI_EXPORT_SYMBOL (AcpiInitializeTables) 173 1.3.2.2 bouyer 174 1.3.2.2 bouyer 175 1.3.2.2 bouyer /******************************************************************************* 176 1.3.2.2 bouyer * 177 1.3.2.2 bouyer * FUNCTION: AcpiReallocateRootTable 178 1.3.2.2 bouyer * 179 1.3.2.2 bouyer * PARAMETERS: None 180 1.3.2.2 bouyer * 181 1.3.2.2 bouyer * RETURN: Status 182 1.3.2.2 bouyer * 183 1.3.2.2 bouyer * DESCRIPTION: Reallocate Root Table List into dynamic memory. Copies the 184 1.3.2.2 bouyer * root list from the previously provided scratch area. Should 185 1.3.2.2 bouyer * be called once dynamic memory allocation is available in the 186 1.3.2.2 bouyer * kernel 187 1.3.2.2 bouyer * 188 1.3.2.2 bouyer ******************************************************************************/ 189 1.3.2.2 bouyer 190 1.3.2.2 bouyer ACPI_STATUS 191 1.3.2.2 bouyer AcpiReallocateRootTable ( 192 1.3.2.2 bouyer void) 193 1.3.2.2 bouyer { 194 1.3.2.2 bouyer ACPI_TABLE_DESC *Tables; 195 1.3.2.2 bouyer ACPI_SIZE NewSize; 196 1.3.2.2 bouyer ACPI_SIZE CurrentSize; 197 1.3.2.2 bouyer 198 1.3.2.2 bouyer 199 1.3.2.2 bouyer ACPI_FUNCTION_TRACE (AcpiReallocateRootTable); 200 1.3.2.2 bouyer 201 1.3.2.2 bouyer 202 1.3.2.2 bouyer /* 203 1.3.2.2 bouyer * Only reallocate the root table if the host provided a static buffer 204 1.3.2.2 bouyer * for the table array in the call to AcpiInitializeTables. 205 1.3.2.2 bouyer */ 206 1.3.2.2 bouyer if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED) 207 1.3.2.2 bouyer { 208 1.3.2.2 bouyer return_ACPI_STATUS (AE_SUPPORT); 209 1.3.2.2 bouyer } 210 1.3.2.2 bouyer 211 1.3.2.2 bouyer /* 212 1.3.2.2 bouyer * Get the current size of the root table and add the default 213 1.3.2.2 bouyer * increment to create the new table size. 214 1.3.2.2 bouyer */ 215 1.3.2.2 bouyer CurrentSize = (ACPI_SIZE) 216 1.3.2.2 bouyer AcpiGbl_RootTableList.CurrentTableCount * sizeof (ACPI_TABLE_DESC); 217 1.3.2.2 bouyer 218 1.3.2.2 bouyer NewSize = CurrentSize + 219 1.3.2.2 bouyer (ACPI_ROOT_TABLE_SIZE_INCREMENT * sizeof (ACPI_TABLE_DESC)); 220 1.3.2.2 bouyer 221 1.3.2.2 bouyer /* Create new array and copy the old array */ 222 1.3.2.2 bouyer 223 1.3.2.2 bouyer Tables = ACPI_ALLOCATE_ZEROED (NewSize); 224 1.3.2.2 bouyer if (!Tables) 225 1.3.2.2 bouyer { 226 1.3.2.2 bouyer return_ACPI_STATUS (AE_NO_MEMORY); 227 1.3.2.2 bouyer } 228 1.3.2.2 bouyer 229 1.3.2.2 bouyer ACPI_MEMCPY (Tables, AcpiGbl_RootTableList.Tables, CurrentSize); 230 1.3.2.2 bouyer 231 1.3.2.2 bouyer /* 232 1.3.2.2 bouyer * Update the root table descriptor. The new size will be the current 233 1.3.2.2 bouyer * number of tables plus the increment, independent of the reserved 234 1.3.2.2 bouyer * size of the original table list. 235 1.3.2.2 bouyer */ 236 1.3.2.2 bouyer AcpiGbl_RootTableList.Tables = Tables; 237 1.3.2.2 bouyer AcpiGbl_RootTableList.MaxTableCount = 238 1.3.2.2 bouyer AcpiGbl_RootTableList.CurrentTableCount + ACPI_ROOT_TABLE_SIZE_INCREMENT; 239 1.3.2.2 bouyer AcpiGbl_RootTableList.Flags = 240 1.3.2.2 bouyer ACPI_ROOT_ORIGIN_ALLOCATED | ACPI_ROOT_ALLOW_RESIZE; 241 1.3.2.2 bouyer 242 1.3.2.2 bouyer return_ACPI_STATUS (AE_OK); 243 1.3.2.2 bouyer } 244 1.3.2.2 bouyer 245 1.3.2.2 bouyer ACPI_EXPORT_SYMBOL (AcpiReallocateRootTable) 246 1.3.2.2 bouyer 247 1.3.2.2 bouyer 248 1.3.2.2 bouyer /******************************************************************************* 249 1.3.2.2 bouyer * 250 1.3.2.2 bouyer * FUNCTION: AcpiGetTableHeader 251 1.3.2.2 bouyer * 252 1.3.2.2 bouyer * PARAMETERS: Signature - ACPI signature of needed table 253 1.3.2.2 bouyer * Instance - Which instance (for SSDTs) 254 1.3.2.2 bouyer * OutTableHeader - The pointer to the table header to fill 255 1.3.2.2 bouyer * 256 1.3.2.2 bouyer * RETURN: Status and pointer to mapped table header 257 1.3.2.2 bouyer * 258 1.3.2.2 bouyer * DESCRIPTION: Finds an ACPI table header. 259 1.3.2.2 bouyer * 260 1.3.2.2 bouyer * NOTE: Caller is responsible in unmapping the header with 261 1.3.2.2 bouyer * AcpiOsUnmapMemory 262 1.3.2.2 bouyer * 263 1.3.2.2 bouyer ******************************************************************************/ 264 1.3.2.2 bouyer 265 1.3.2.2 bouyer ACPI_STATUS 266 1.3.2.2 bouyer AcpiGetTableHeader ( 267 1.3.2.2 bouyer ACPI_CONST_STRING Signature, 268 1.3.2.2 bouyer UINT32 Instance, 269 1.3.2.2 bouyer ACPI_TABLE_HEADER *OutTableHeader) 270 1.3.2.2 bouyer { 271 1.3.2.2 bouyer UINT32 i; 272 1.3.2.2 bouyer UINT32 j; 273 1.3.2.2 bouyer ACPI_TABLE_HEADER *Header; 274 1.3.2.2 bouyer ACPI_STRING USignature = __UNCONST(Signature); 275 1.3.2.2 bouyer 276 1.3.2.2 bouyer /* Parameter validation */ 277 1.3.2.2 bouyer 278 1.3.2.2 bouyer if (!Signature || !OutTableHeader) 279 1.3.2.2 bouyer { 280 1.3.2.2 bouyer return (AE_BAD_PARAMETER); 281 1.3.2.2 bouyer } 282 1.3.2.2 bouyer 283 1.3.2.2 bouyer /* Walk the root table list */ 284 1.3.2.2 bouyer 285 1.3.2.2 bouyer for (i = 0, j = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) 286 1.3.2.2 bouyer { 287 1.3.2.2 bouyer if (!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), 288 1.3.2.2 bouyer USignature)) 289 1.3.2.2 bouyer { 290 1.3.2.2 bouyer continue; 291 1.3.2.2 bouyer } 292 1.3.2.2 bouyer 293 1.3.2.2 bouyer if (++j < Instance) 294 1.3.2.2 bouyer { 295 1.3.2.2 bouyer continue; 296 1.3.2.2 bouyer } 297 1.3.2.2 bouyer 298 1.3.2.2 bouyer if (!AcpiGbl_RootTableList.Tables[i].Pointer) 299 1.3.2.2 bouyer { 300 1.3.2.2 bouyer if ((AcpiGbl_RootTableList.Tables[i].Flags & 301 1.3.2.2 bouyer ACPI_TABLE_ORIGIN_MASK) == 302 1.3.2.2 bouyer ACPI_TABLE_ORIGIN_MAPPED) 303 1.3.2.2 bouyer { 304 1.3.2.2 bouyer Header = AcpiOsMapMemory ( 305 1.3.2.2 bouyer AcpiGbl_RootTableList.Tables[i].Address, 306 1.3.2.2 bouyer sizeof (ACPI_TABLE_HEADER)); 307 1.3.2.2 bouyer if (!Header) 308 1.3.2.2 bouyer { 309 1.3.2.2 bouyer return AE_NO_MEMORY; 310 1.3.2.2 bouyer } 311 1.3.2.2 bouyer 312 1.3.2.2 bouyer ACPI_MEMCPY (OutTableHeader, Header, sizeof(ACPI_TABLE_HEADER)); 313 1.3.2.2 bouyer AcpiOsUnmapMemory (Header, sizeof(ACPI_TABLE_HEADER)); 314 1.3.2.2 bouyer } 315 1.3.2.2 bouyer else 316 1.3.2.2 bouyer { 317 1.3.2.2 bouyer return AE_NOT_FOUND; 318 1.3.2.2 bouyer } 319 1.3.2.2 bouyer } 320 1.3.2.2 bouyer else 321 1.3.2.2 bouyer { 322 1.3.2.2 bouyer ACPI_MEMCPY (OutTableHeader, 323 1.3.2.2 bouyer AcpiGbl_RootTableList.Tables[i].Pointer, 324 1.3.2.2 bouyer sizeof(ACPI_TABLE_HEADER)); 325 1.3.2.2 bouyer } 326 1.3.2.2 bouyer 327 1.3.2.2 bouyer return (AE_OK); 328 1.3.2.2 bouyer } 329 1.3.2.2 bouyer 330 1.3.2.2 bouyer return (AE_NOT_FOUND); 331 1.3.2.2 bouyer } 332 1.3.2.2 bouyer 333 1.3.2.2 bouyer ACPI_EXPORT_SYMBOL (AcpiGetTableHeader) 334 1.3.2.2 bouyer 335 1.3.2.2 bouyer 336 1.3.2.2 bouyer /******************************************************************************* 337 1.3.2.2 bouyer * 338 1.3.2.2 bouyer * FUNCTION: AcpiGetTable 339 1.3.2.2 bouyer * 340 1.3.2.2 bouyer * PARAMETERS: Signature - ACPI signature of needed table 341 1.3.2.2 bouyer * Instance - Which instance (for SSDTs) 342 1.3.2.2 bouyer * OutTable - Where the pointer to the table is returned 343 1.3.2.2 bouyer * 344 1.3.2.2 bouyer * RETURN: Status and pointer to table 345 1.3.2.2 bouyer * 346 1.3.2.2 bouyer * DESCRIPTION: Finds and verifies an ACPI table. 347 1.3.2.2 bouyer * 348 1.3.2.2 bouyer ******************************************************************************/ 349 1.3.2.2 bouyer 350 1.3.2.2 bouyer ACPI_STATUS 351 1.3.2.2 bouyer AcpiGetTable ( 352 1.3.2.2 bouyer ACPI_CONST_STRING Signature, 353 1.3.2.2 bouyer UINT32 Instance, 354 1.3.2.2 bouyer ACPI_TABLE_HEADER **OutTable) 355 1.3.2.2 bouyer { 356 1.3.2.2 bouyer UINT32 i; 357 1.3.2.2 bouyer UINT32 j; 358 1.3.2.2 bouyer ACPI_STATUS Status; 359 1.3.2.2 bouyer ACPI_STRING USignature = __UNCONST(Signature); 360 1.3.2.2 bouyer 361 1.3.2.2 bouyer /* Parameter validation */ 362 1.3.2.2 bouyer 363 1.3.2.2 bouyer if (!Signature || !OutTable) 364 1.3.2.2 bouyer { 365 1.3.2.2 bouyer return (AE_BAD_PARAMETER); 366 1.3.2.2 bouyer } 367 1.3.2.2 bouyer 368 1.3.2.2 bouyer /* Walk the root table list */ 369 1.3.2.2 bouyer 370 1.3.2.2 bouyer for (i = 0, j = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++) 371 1.3.2.2 bouyer { 372 1.3.2.2 bouyer if (!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), 373 1.3.2.2 bouyer USignature)) 374 1.3.2.2 bouyer { 375 1.3.2.2 bouyer continue; 376 1.3.2.2 bouyer } 377 1.3.2.2 bouyer 378 1.3.2.2 bouyer if (++j < Instance) 379 1.3.2.2 bouyer { 380 1.3.2.2 bouyer continue; 381 1.3.2.2 bouyer } 382 1.3.2.2 bouyer 383 1.3.2.2 bouyer Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]); 384 1.3.2.2 bouyer if (ACPI_SUCCESS (Status)) 385 1.3.2.2 bouyer { 386 1.3.2.2 bouyer *OutTable = AcpiGbl_RootTableList.Tables[i].Pointer; 387 1.3.2.2 bouyer } 388 1.3.2.2 bouyer 389 1.3.2.2 bouyer return (Status); 390 1.3.2.2 bouyer } 391 1.3.2.2 bouyer 392 1.3.2.2 bouyer return (AE_NOT_FOUND); 393 1.3.2.2 bouyer } 394 1.3.2.2 bouyer 395 1.3.2.2 bouyer ACPI_EXPORT_SYMBOL (AcpiGetTable) 396 1.3.2.2 bouyer 397 1.3.2.2 bouyer 398 1.3.2.2 bouyer /******************************************************************************* 399 1.3.2.2 bouyer * 400 1.3.2.2 bouyer * FUNCTION: AcpiGetTableByIndex 401 1.3.2.2 bouyer * 402 1.3.2.2 bouyer * PARAMETERS: TableIndex - Table index 403 1.3.2.2 bouyer * Table - Where the pointer to the table is returned 404 1.3.2.2 bouyer * 405 1.3.2.2 bouyer * RETURN: Status and pointer to the table 406 1.3.2.2 bouyer * 407 1.3.2.2 bouyer * DESCRIPTION: Obtain a table by an index into the global table list. 408 1.3.2.2 bouyer * 409 1.3.2.2 bouyer ******************************************************************************/ 410 1.3.2.2 bouyer 411 1.3.2.2 bouyer ACPI_STATUS 412 1.3.2.2 bouyer AcpiGetTableByIndex ( 413 1.3.2.2 bouyer UINT32 TableIndex, 414 1.3.2.2 bouyer ACPI_TABLE_HEADER **Table) 415 1.3.2.2 bouyer { 416 1.3.2.2 bouyer ACPI_STATUS Status; 417 1.3.2.2 bouyer 418 1.3.2.2 bouyer 419 1.3.2.2 bouyer ACPI_FUNCTION_TRACE (AcpiGetTableByIndex); 420 1.3.2.2 bouyer 421 1.3.2.2 bouyer 422 1.3.2.2 bouyer /* Parameter validation */ 423 1.3.2.2 bouyer 424 1.3.2.2 bouyer if (!Table) 425 1.3.2.2 bouyer { 426 1.3.2.2 bouyer return_ACPI_STATUS (AE_BAD_PARAMETER); 427 1.3.2.2 bouyer } 428 1.3.2.2 bouyer 429 1.3.2.2 bouyer (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 430 1.3.2.2 bouyer 431 1.3.2.2 bouyer /* Validate index */ 432 1.3.2.2 bouyer 433 1.3.2.2 bouyer if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount) 434 1.3.2.2 bouyer { 435 1.3.2.2 bouyer (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 436 1.3.2.2 bouyer return_ACPI_STATUS (AE_BAD_PARAMETER); 437 1.3.2.2 bouyer } 438 1.3.2.2 bouyer 439 1.3.2.2 bouyer if (!AcpiGbl_RootTableList.Tables[TableIndex].Pointer) 440 1.3.2.2 bouyer { 441 1.3.2.2 bouyer /* Table is not mapped, map it */ 442 1.3.2.2 bouyer 443 1.3.2.2 bouyer Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[TableIndex]); 444 1.3.2.2 bouyer if (ACPI_FAILURE (Status)) 445 1.3.2.2 bouyer { 446 1.3.2.2 bouyer (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 447 1.3.2.2 bouyer return_ACPI_STATUS (Status); 448 1.3.2.2 bouyer } 449 1.3.2.2 bouyer } 450 1.3.2.2 bouyer 451 1.3.2.2 bouyer *Table = AcpiGbl_RootTableList.Tables[TableIndex].Pointer; 452 1.3.2.2 bouyer (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 453 1.3.2.2 bouyer return_ACPI_STATUS (AE_OK); 454 1.3.2.2 bouyer } 455 1.3.2.2 bouyer 456 1.3.2.2 bouyer ACPI_EXPORT_SYMBOL (AcpiGetTableByIndex) 457 1.3.2.2 bouyer 458 1.3.2.2 bouyer 459 1.3.2.2 bouyer /******************************************************************************* 460 1.3.2.2 bouyer * 461 1.3.2.2 bouyer * FUNCTION: AcpiTbLoadNamespace 462 1.3.2.2 bouyer * 463 1.3.2.2 bouyer * PARAMETERS: None 464 1.3.2.2 bouyer * 465 1.3.2.2 bouyer * RETURN: Status 466 1.3.2.2 bouyer * 467 1.3.2.2 bouyer * DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in 468 1.3.2.2 bouyer * the RSDT/XSDT. 469 1.3.2.2 bouyer * 470 1.3.2.2 bouyer ******************************************************************************/ 471 1.3.2.2 bouyer 472 1.3.2.2 bouyer static ACPI_STATUS 473 1.3.2.2 bouyer AcpiTbLoadNamespace ( 474 1.3.2.2 bouyer void) 475 1.3.2.2 bouyer { 476 1.3.2.2 bouyer ACPI_STATUS Status; 477 1.3.2.2 bouyer UINT32 i; 478 1.3.2.2 bouyer ACPI_TABLE_HEADER *NewDsdt; 479 1.3.2.2 bouyer 480 1.3.2.2 bouyer 481 1.3.2.2 bouyer ACPI_FUNCTION_TRACE (TbLoadNamespace); 482 1.3.2.2 bouyer 483 1.3.2.2 bouyer 484 1.3.2.2 bouyer (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 485 1.3.2.2 bouyer 486 1.3.2.2 bouyer /* 487 1.3.2.2 bouyer * Load the namespace. The DSDT is required, but any SSDT and 488 1.3.2.2 bouyer * PSDT tables are optional. Verify the DSDT. 489 1.3.2.2 bouyer */ 490 1.3.2.2 bouyer if (!AcpiGbl_RootTableList.CurrentTableCount || 491 1.3.2.2 bouyer !ACPI_COMPARE_NAME ( 492 1.3.2.2 bouyer &(AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT].Signature), 493 1.3.2.2 bouyer ACPI_SIG_DSDT) || 494 1.3.2.2 bouyer ACPI_FAILURE (AcpiTbVerifyTable ( 495 1.3.2.2 bouyer &AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT]))) 496 1.3.2.2 bouyer { 497 1.3.2.2 bouyer Status = AE_NO_ACPI_TABLES; 498 1.3.2.2 bouyer goto UnlockAndExit; 499 1.3.2.2 bouyer } 500 1.3.2.2 bouyer 501 1.3.2.2 bouyer /* 502 1.3.2.2 bouyer * Save the DSDT pointer for simple access. This is the mapped memory 503 1.3.2.2 bouyer * address. We must take care here because the address of the .Tables 504 1.3.2.2 bouyer * array can change dynamically as tables are loaded at run-time. Note: 505 1.3.2.2 bouyer * .Pointer field is not validated until after call to AcpiTbVerifyTable. 506 1.3.2.2 bouyer */ 507 1.3.2.2 bouyer AcpiGbl_DSDT = AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT].Pointer; 508 1.3.2.2 bouyer 509 1.3.2.2 bouyer /* 510 1.3.2.2 bouyer * Optionally copy the entire DSDT to local memory (instead of simply 511 1.3.2.2 bouyer * mapping it.) There are some BIOSs that corrupt or replace the original 512 1.3.2.2 bouyer * DSDT, creating the need for this option. Default is FALSE, do not copy 513 1.3.2.2 bouyer * the DSDT. 514 1.3.2.2 bouyer */ 515 1.3.2.2 bouyer if (AcpiGbl_CopyDsdtLocally) 516 1.3.2.2 bouyer { 517 1.3.2.2 bouyer NewDsdt = AcpiTbCopyDsdt (ACPI_TABLE_INDEX_DSDT); 518 1.3.2.2 bouyer if (NewDsdt) 519 1.3.2.2 bouyer { 520 1.3.2.2 bouyer AcpiGbl_DSDT = NewDsdt; 521 1.3.2.2 bouyer } 522 1.3.2.2 bouyer } 523 1.3.2.2 bouyer 524 1.3.2.2 bouyer /* 525 1.3.2.2 bouyer * Save the original DSDT header for detection of table corruption 526 1.3.2.2 bouyer * and/or replacement of the DSDT from outside the OS. 527 1.3.2.2 bouyer */ 528 1.3.2.2 bouyer ACPI_MEMCPY (&AcpiGbl_OriginalDsdtHeader, AcpiGbl_DSDT, 529 1.3.2.2 bouyer sizeof (ACPI_TABLE_HEADER)); 530 1.3.2.2 bouyer 531 1.3.2.2 bouyer (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 532 1.3.2.2 bouyer 533 1.3.2.2 bouyer /* Load and parse tables */ 534 1.3.2.2 bouyer 535 1.3.2.2 bouyer Status = AcpiNsLoadTable (ACPI_TABLE_INDEX_DSDT, AcpiGbl_RootNode); 536 1.3.2.2 bouyer if (ACPI_FAILURE (Status)) 537 1.3.2.2 bouyer { 538 1.3.2.2 bouyer return_ACPI_STATUS (Status); 539 1.3.2.2 bouyer } 540 1.3.2.2 bouyer 541 1.3.2.2 bouyer /* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */ 542 1.3.2.2 bouyer 543 1.3.2.2 bouyer (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 544 1.3.2.2 bouyer for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) 545 1.3.2.2 bouyer { 546 1.3.2.2 bouyer if ((!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), 547 1.3.2.2 bouyer ACPI_SIG_SSDT) && 548 1.3.2.2 bouyer !ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature), 549 1.3.2.2 bouyer ACPI_SIG_PSDT)) || 550 1.3.2.2 bouyer ACPI_FAILURE (AcpiTbVerifyTable ( 551 1.3.2.2 bouyer &AcpiGbl_RootTableList.Tables[i]))) 552 1.3.2.2 bouyer { 553 1.3.2.2 bouyer continue; 554 1.3.2.2 bouyer } 555 1.3.2.2 bouyer 556 1.3.2.2 bouyer /* Ignore errors while loading tables, get as many as possible */ 557 1.3.2.2 bouyer 558 1.3.2.2 bouyer (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 559 1.3.2.2 bouyer (void) AcpiNsLoadTable (i, AcpiGbl_RootNode); 560 1.3.2.2 bouyer (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES); 561 1.3.2.2 bouyer } 562 1.3.2.2 bouyer 563 1.3.2.2 bouyer ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n")); 564 1.3.2.2 bouyer 565 1.3.2.2 bouyer UnlockAndExit: 566 1.3.2.2 bouyer (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES); 567 1.3.2.2 bouyer return_ACPI_STATUS (Status); 568 1.3.2.2 bouyer } 569 1.3.2.2 bouyer 570 1.3.2.2 bouyer 571 1.3.2.2 bouyer /******************************************************************************* 572 1.3.2.2 bouyer * 573 1.3.2.2 bouyer * FUNCTION: AcpiLoadTables 574 1.3.2.2 bouyer * 575 1.3.2.2 bouyer * PARAMETERS: None 576 1.3.2.2 bouyer * 577 1.3.2.2 bouyer * RETURN: Status 578 1.3.2.2 bouyer * 579 1.3.2.2 bouyer * DESCRIPTION: Load the ACPI tables from the RSDT/XSDT 580 1.3.2.2 bouyer * 581 1.3.2.2 bouyer ******************************************************************************/ 582 1.3.2.2 bouyer 583 1.3.2.2 bouyer ACPI_STATUS 584 1.3.2.2 bouyer AcpiLoadTables ( 585 1.3.2.2 bouyer void) 586 1.3.2.2 bouyer { 587 1.3.2.2 bouyer ACPI_STATUS Status; 588 1.3.2.2 bouyer 589 1.3.2.2 bouyer 590 1.3.2.2 bouyer ACPI_FUNCTION_TRACE (AcpiLoadTables); 591 1.3.2.2 bouyer 592 1.3.2.2 bouyer 593 1.3.2.2 bouyer /* Load the namespace from the tables */ 594 1.3.2.2 bouyer 595 1.3.2.2 bouyer Status = AcpiTbLoadNamespace (); 596 1.3.2.2 bouyer if (ACPI_FAILURE (Status)) 597 1.3.2.2 bouyer { 598 1.3.2.2 bouyer ACPI_EXCEPTION ((AE_INFO, Status, 599 1.3.2.2 bouyer "While loading namespace from ACPI tables")); 600 1.3.2.2 bouyer } 601 1.3.2.2 bouyer 602 1.3.2.2 bouyer return_ACPI_STATUS (Status); 603 1.3.2.2 bouyer } 604 1.3.2.2 bouyer 605 1.3.2.2 bouyer ACPI_EXPORT_SYMBOL (AcpiLoadTables) 606 1.3.2.2 bouyer 607 1.3.2.2 bouyer 608 1.3.2.2 bouyer /******************************************************************************* 609 1.3.2.2 bouyer * 610 1.3.2.2 bouyer * FUNCTION: AcpiInstallTableHandler 611 1.3.2.2 bouyer * 612 1.3.2.2 bouyer * PARAMETERS: Handler - Table event handler 613 1.3.2.2 bouyer * Context - Value passed to the handler on each event 614 1.3.2.2 bouyer * 615 1.3.2.2 bouyer * RETURN: Status 616 1.3.2.2 bouyer * 617 1.3.2.2 bouyer * DESCRIPTION: Install table event handler 618 1.3.2.2 bouyer * 619 1.3.2.2 bouyer ******************************************************************************/ 620 1.3.2.2 bouyer 621 1.3.2.2 bouyer ACPI_STATUS 622 1.3.2.2 bouyer AcpiInstallTableHandler ( 623 1.3.2.2 bouyer ACPI_TABLE_HANDLER Handler, 624 1.3.2.2 bouyer void *Context) 625 1.3.2.2 bouyer { 626 1.3.2.2 bouyer ACPI_STATUS Status; 627 1.3.2.2 bouyer 628 1.3.2.2 bouyer 629 1.3.2.2 bouyer ACPI_FUNCTION_TRACE (AcpiInstallTableHandler); 630 1.3.2.2 bouyer 631 1.3.2.2 bouyer 632 1.3.2.2 bouyer if (!Handler) 633 1.3.2.2 bouyer { 634 1.3.2.2 bouyer return_ACPI_STATUS (AE_BAD_PARAMETER); 635 1.3.2.2 bouyer } 636 1.3.2.2 bouyer 637 1.3.2.2 bouyer Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); 638 1.3.2.2 bouyer if (ACPI_FAILURE (Status)) 639 1.3.2.2 bouyer { 640 1.3.2.2 bouyer return_ACPI_STATUS (Status); 641 1.3.2.2 bouyer } 642 1.3.2.2 bouyer 643 1.3.2.2 bouyer /* Don't allow more than one handler */ 644 1.3.2.2 bouyer 645 1.3.2.2 bouyer if (AcpiGbl_TableHandler) 646 1.3.2.2 bouyer { 647 1.3.2.2 bouyer Status = AE_ALREADY_EXISTS; 648 1.3.2.2 bouyer goto Cleanup; 649 1.3.2.2 bouyer } 650 1.3.2.2 bouyer 651 1.3.2.2 bouyer /* Install the handler */ 652 1.3.2.2 bouyer 653 1.3.2.2 bouyer AcpiGbl_TableHandler = Handler; 654 1.3.2.2 bouyer AcpiGbl_TableHandlerContext = Context; 655 1.3.2.2 bouyer 656 1.3.2.2 bouyer Cleanup: 657 1.3.2.2 bouyer (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); 658 1.3.2.2 bouyer return_ACPI_STATUS (Status); 659 1.3.2.2 bouyer } 660 1.3.2.2 bouyer 661 1.3.2.2 bouyer ACPI_EXPORT_SYMBOL (AcpiInstallTableHandler) 662 1.3.2.2 bouyer 663 1.3.2.2 bouyer 664 1.3.2.2 bouyer /******************************************************************************* 665 1.3.2.2 bouyer * 666 1.3.2.2 bouyer * FUNCTION: AcpiRemoveTableHandler 667 1.3.2.2 bouyer * 668 1.3.2.2 bouyer * PARAMETERS: Handler - Table event handler that was installed 669 1.3.2.2 bouyer * previously. 670 1.3.2.2 bouyer * 671 1.3.2.2 bouyer * RETURN: Status 672 1.3.2.2 bouyer * 673 1.3.2.2 bouyer * DESCRIPTION: Remove table event handler 674 1.3.2.2 bouyer * 675 1.3.2.2 bouyer ******************************************************************************/ 676 1.3.2.2 bouyer 677 1.3.2.2 bouyer ACPI_STATUS 678 1.3.2.2 bouyer AcpiRemoveTableHandler ( 679 1.3.2.2 bouyer ACPI_TABLE_HANDLER Handler) 680 1.3.2.2 bouyer { 681 1.3.2.2 bouyer ACPI_STATUS Status; 682 1.3.2.2 bouyer 683 1.3.2.2 bouyer 684 1.3.2.2 bouyer ACPI_FUNCTION_TRACE (AcpiRemoveTableHandler); 685 1.3.2.2 bouyer 686 1.3.2.2 bouyer 687 1.3.2.2 bouyer Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); 688 1.3.2.2 bouyer if (ACPI_FAILURE (Status)) 689 1.3.2.2 bouyer { 690 1.3.2.2 bouyer return_ACPI_STATUS (Status); 691 1.3.2.2 bouyer } 692 1.3.2.2 bouyer 693 1.3.2.2 bouyer /* Make sure that the installed handler is the same */ 694 1.3.2.2 bouyer 695 1.3.2.2 bouyer if (!Handler || 696 1.3.2.2 bouyer Handler != AcpiGbl_TableHandler) 697 1.3.2.2 bouyer { 698 1.3.2.2 bouyer Status = AE_BAD_PARAMETER; 699 1.3.2.2 bouyer goto Cleanup; 700 1.3.2.2 bouyer } 701 1.3.2.2 bouyer 702 1.3.2.2 bouyer /* Remove the handler */ 703 1.3.2.2 bouyer 704 1.3.2.2 bouyer AcpiGbl_TableHandler = NULL; 705 1.3.2.2 bouyer 706 1.3.2.2 bouyer Cleanup: 707 1.3.2.2 bouyer (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); 708 1.3.2.2 bouyer return_ACPI_STATUS (Status); 709 1.3.2.2 bouyer } 710 1.3.2.2 bouyer 711 1.3.2.2 bouyer ACPI_EXPORT_SYMBOL (AcpiRemoveTableHandler) 712 1.3.2.2 bouyer 713
Indexes created Sat Oct 25 16:10:12 GMT 2025