dmresrc.c revision 245636
1/******************************************************************************* 2 * 3 * Module Name: dmresrc.c - Resource Descriptor disassembly 4 * 5 ******************************************************************************/ 6 7/* 8 * Copyright (C) 2000 - 2013, Intel Corp. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions, and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * substantially similar to the "NO WARRANTY" disclaimer below 19 * ("Disclaimer") and any redistribution must be conditioned upon 20 * including a substantially similar Disclaimer requirement for further 21 * binary redistribution. 22 * 3. Neither the names of the above-listed copyright holders nor the names 23 * of any contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * Alternatively, this software may be distributed under the terms of the 27 * GNU General Public License ("GPL") version 2 as published by the Free 28 * Software Foundation. 29 * 30 * NO WARRANTY 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGES. 42 */ 43 44 45#include <contrib/dev/acpica/include/acpi.h> 46#include <contrib/dev/acpica/include/accommon.h> 47#include <contrib/dev/acpica/include/amlcode.h> 48#include <contrib/dev/acpica/include/acdisasm.h> 49 50#ifdef ACPI_DISASSEMBLER 51 52#define _COMPONENT ACPI_CA_DEBUGGER 53 ACPI_MODULE_NAME ("dbresrc") 54 55 56/* Dispatch tables for Resource disassembly functions */ 57 58static ACPI_RESOURCE_HANDLER AcpiGbl_DmResourceDispatch [] = 59{ 60 /* Small descriptors */ 61 62 NULL, /* 0x00, Reserved */ 63 NULL, /* 0x01, Reserved */ 64 NULL, /* 0x02, Reserved */ 65 NULL, /* 0x03, Reserved */ 66 AcpiDmIrqDescriptor, /* 0x04, ACPI_RESOURCE_NAME_IRQ_FORMAT */ 67 AcpiDmDmaDescriptor, /* 0x05, ACPI_RESOURCE_NAME_DMA_FORMAT */ 68 AcpiDmStartDependentDescriptor, /* 0x06, ACPI_RESOURCE_NAME_START_DEPENDENT */ 69 AcpiDmEndDependentDescriptor, /* 0x07, ACPI_RESOURCE_NAME_END_DEPENDENT */ 70 AcpiDmIoDescriptor, /* 0x08, ACPI_RESOURCE_NAME_IO_PORT */ 71 AcpiDmFixedIoDescriptor, /* 0x09, ACPI_RESOURCE_NAME_FIXED_IO_PORT */ 72 AcpiDmFixedDmaDescriptor, /* 0x0A, ACPI_RESOURCE_NAME_FIXED_DMA */ 73 NULL, /* 0x0B, Reserved */ 74 NULL, /* 0x0C, Reserved */ 75 NULL, /* 0x0D, Reserved */ 76 AcpiDmVendorSmallDescriptor, /* 0x0E, ACPI_RESOURCE_NAME_SMALL_VENDOR */ 77 NULL, /* 0x0F, ACPI_RESOURCE_NAME_END_TAG (not used) */ 78 79 /* Large descriptors */ 80 81 NULL, /* 0x00, Reserved */ 82 AcpiDmMemory24Descriptor, /* 0x01, ACPI_RESOURCE_NAME_MEMORY_24 */ 83 AcpiDmGenericRegisterDescriptor,/* 0x02, ACPI_RESOURCE_NAME_GENERIC_REGISTER */ 84 NULL, /* 0x03, Reserved */ 85 AcpiDmVendorLargeDescriptor, /* 0x04, ACPI_RESOURCE_NAME_LARGE_VENDOR */ 86 AcpiDmMemory32Descriptor, /* 0x05, ACPI_RESOURCE_NAME_MEMORY_32 */ 87 AcpiDmFixedMemory32Descriptor, /* 0x06, ACPI_RESOURCE_NAME_FIXED_MEMORY_32 */ 88 AcpiDmDwordDescriptor, /* 0x07, ACPI_RESOURCE_NAME_DWORD_ADDRESS_SPACE */ 89 AcpiDmWordDescriptor, /* 0x08, ACPI_RESOURCE_NAME_WORD_ADDRESS_SPACE */ 90 AcpiDmInterruptDescriptor, /* 0x09, ACPI_RESOURCE_NAME_EXTENDED_XRUPT */ 91 AcpiDmQwordDescriptor, /* 0x0A, ACPI_RESOURCE_NAME_QWORD_ADDRESS_SPACE */ 92 AcpiDmExtendedDescriptor, /* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS_SPACE */ 93 AcpiDmGpioDescriptor, /* 0x0C, ACPI_RESOURCE_NAME_GPIO */ 94 NULL, /* 0x0D, Reserved */ 95 AcpiDmSerialBusDescriptor /* 0x0E, ACPI_RESOURCE_NAME_SERIAL_BUS */ 96}; 97 98 99/* Only used for single-threaded applications */ 100/* TBD: remove when name is passed as parameter to the dump functions */ 101 102static UINT32 ResourceName; 103 104 105/******************************************************************************* 106 * 107 * FUNCTION: AcpiDmDescriptorName 108 * 109 * PARAMETERS: None 110 * 111 * RETURN: None 112 * 113 * DESCRIPTION: Emit a name for the descriptor if one is present (indicated 114 * by the name being changed from the default name.) A name is only 115 * emitted if a reference to the descriptor has been made somewhere 116 * in the original ASL code. 117 * 118 ******************************************************************************/ 119 120void 121AcpiDmDescriptorName ( 122 void) 123{ 124 125 if (ResourceName == ACPI_DEFAULT_RESNAME) 126 { 127 return; 128 } 129 130 AcpiOsPrintf ("%4.4s", (char *) &ResourceName); 131} 132 133 134/******************************************************************************* 135 * 136 * FUNCTION: AcpiDmDumpInteger* 137 * 138 * PARAMETERS: Value - Value to emit 139 * Name - Associated name (emitted as a comment) 140 * 141 * RETURN: None 142 * 143 * DESCRIPTION: Integer output helper functions 144 * 145 ******************************************************************************/ 146 147void 148AcpiDmDumpInteger8 ( 149 UINT8 Value, 150 char *Name) 151{ 152 AcpiOsPrintf ("0x%2.2X, // %s\n", Value, Name); 153} 154 155void 156AcpiDmDumpInteger16 ( 157 UINT16 Value, 158 char *Name) 159{ 160 AcpiOsPrintf ("0x%4.4X, // %s\n", Value, Name); 161} 162 163void 164AcpiDmDumpInteger32 ( 165 UINT32 Value, 166 char *Name) 167{ 168 AcpiOsPrintf ("0x%8.8X, // %s\n", Value, Name); 169} 170 171void 172AcpiDmDumpInteger64 ( 173 UINT64 Value, 174 char *Name) 175{ 176 AcpiOsPrintf ("0x%8.8X%8.8X, // %s\n", ACPI_FORMAT_UINT64 (Value), Name); 177} 178 179 180/******************************************************************************* 181 * 182 * FUNCTION: AcpiDmBitList 183 * 184 * PARAMETERS: Mask - 16-bit value corresponding to 16 interrupt 185 * or DMA values 186 * 187 * RETURN: None 188 * 189 * DESCRIPTION: Dump a bit mask as a list of individual interrupt/DMA levels. 190 * 191 ******************************************************************************/ 192 193void 194AcpiDmBitList ( 195 UINT16 Mask) 196{ 197 UINT32 i; 198 BOOLEAN Previous = FALSE; 199 200 201 /* Open the initializer list */ 202 203 AcpiOsPrintf ("{"); 204 205 /* Examine each bit */ 206 207 for (i = 0; i < 16; i++) 208 { 209 /* Only interested in bits that are set to 1 */ 210 211 if (Mask & 1) 212 { 213 if (Previous) 214 { 215 AcpiOsPrintf (","); 216 } 217 Previous = TRUE; 218 AcpiOsPrintf ("%u", i); 219 } 220 221 Mask >>= 1; 222 } 223 224 /* Close list */ 225 226 AcpiOsPrintf ("}\n"); 227} 228 229 230/******************************************************************************* 231 * 232 * FUNCTION: AcpiDmResourceTemplate 233 * 234 * PARAMETERS: Info - Curent parse tree walk info 235 * ByteData - Pointer to the byte list data 236 * ByteCount - Length of the byte list 237 * 238 * RETURN: None 239 * 240 * DESCRIPTION: Dump the contents of a Resource Template containing a set of 241 * Resource Descriptors. 242 * 243 ******************************************************************************/ 244 245void 246AcpiDmResourceTemplate ( 247 ACPI_OP_WALK_INFO *Info, 248 ACPI_PARSE_OBJECT *Op, 249 UINT8 *ByteData, 250 UINT32 ByteCount) 251{ 252 ACPI_STATUS Status; 253 UINT32 CurrentByteOffset; 254 UINT8 ResourceType; 255 UINT32 ResourceLength; 256 void *Aml; 257 UINT32 Level; 258 BOOLEAN DependentFns = FALSE; 259 UINT8 ResourceIndex; 260 ACPI_NAMESPACE_NODE *Node; 261 262 263 Level = Info->Level; 264 ResourceName = ACPI_DEFAULT_RESNAME; 265 Node = Op->Common.Node; 266 if (Node) 267 { 268 Node = Node->Child; 269 } 270 271 for (CurrentByteOffset = 0; CurrentByteOffset < ByteCount;) 272 { 273 Aml = &ByteData[CurrentByteOffset]; 274 275 /* Get the descriptor type and length */ 276 277 ResourceType = AcpiUtGetResourceType (Aml); 278 ResourceLength = AcpiUtGetResourceLength (Aml); 279 280 /* Validate the Resource Type and Resource Length */ 281 282 Status = AcpiUtValidateResource (NULL, Aml, &ResourceIndex); 283 if (ACPI_FAILURE (Status)) 284 { 285 AcpiOsPrintf ("/*** Could not validate Resource, type (%X) %s***/\n", 286 ResourceType, AcpiFormatException (Status)); 287 return; 288 } 289 290 /* Point to next descriptor */ 291 292 CurrentByteOffset += AcpiUtGetDescriptorLength (Aml); 293 294 /* Descriptor pre-processing */ 295 296 switch (ResourceType) 297 { 298 case ACPI_RESOURCE_NAME_START_DEPENDENT: 299 300 /* Finish a previous StartDependentFns */ 301 302 if (DependentFns) 303 { 304 Level--; 305 AcpiDmIndent (Level); 306 AcpiOsPrintf ("}\n"); 307 } 308 break; 309 310 case ACPI_RESOURCE_NAME_END_DEPENDENT: 311 312 Level--; 313 DependentFns = FALSE; 314 break; 315 316 case ACPI_RESOURCE_NAME_END_TAG: 317 318 /* Normal exit, the resource list is finished */ 319 320 if (DependentFns) 321 { 322 /* 323 * Close an open StartDependentDescriptor. This indicates a 324 * missing EndDependentDescriptor. 325 */ 326 Level--; 327 DependentFns = FALSE; 328 329 /* Go ahead and insert EndDependentFn() */ 330 331 AcpiDmEndDependentDescriptor (Aml, ResourceLength, Level); 332 333 AcpiDmIndent (Level); 334 AcpiOsPrintf ( 335 "/*** Disassembler: inserted missing EndDependentFn () ***/\n"); 336 } 337 return; 338 339 default: 340 break; 341 } 342 343 /* Disassemble the resource structure */ 344 345 if (Node) 346 { 347 ResourceName = Node->Name.Integer; 348 Node = Node->Peer; 349 } 350 351 AcpiGbl_DmResourceDispatch [ResourceIndex] ( 352 Aml, ResourceLength, Level); 353 354 /* Descriptor post-processing */ 355 356 if (ResourceType == ACPI_RESOURCE_NAME_START_DEPENDENT) 357 { 358 DependentFns = TRUE; 359 Level++; 360 } 361 } 362} 363 364 365/******************************************************************************* 366 * 367 * FUNCTION: AcpiDmIsResourceTemplate 368 * 369 * PARAMETERS: WalkState - Current walk info 370 * Op - Buffer Op to be examined 371 * 372 * RETURN: Status. AE_OK if valid template 373 * 374 * DESCRIPTION: Walk a byte list to determine if it consists of a valid set 375 * of resource descriptors. Nothing is output. 376 * 377 ******************************************************************************/ 378 379ACPI_STATUS 380AcpiDmIsResourceTemplate ( 381 ACPI_WALK_STATE *WalkState, 382 ACPI_PARSE_OBJECT *Op) 383{ 384 ACPI_STATUS Status; 385 ACPI_PARSE_OBJECT *NextOp; 386 UINT8 *Aml; 387 UINT8 *EndAml; 388 ACPI_SIZE Length; 389 390 391 /* This op must be a buffer */ 392 393 if (Op->Common.AmlOpcode != AML_BUFFER_OP) 394 { 395 return (AE_TYPE); 396 } 397 398 /* Get the ByteData list and length */ 399 400 NextOp = Op->Common.Value.Arg; 401 if (!NextOp) 402 { 403 AcpiOsPrintf ("NULL byte list in buffer\n"); 404 return (AE_TYPE); 405 } 406 407 NextOp = NextOp->Common.Next; 408 if (!NextOp) 409 { 410 return (AE_TYPE); 411 } 412 413 Aml = NextOp->Named.Data; 414 Length = (ACPI_SIZE) NextOp->Common.Value.Integer; 415 416 /* Walk the byte list, abort on any invalid descriptor type or length */ 417 418 Status = AcpiUtWalkAmlResources (WalkState, Aml, Length, 419 NULL, ACPI_CAST_INDIRECT_PTR (void, &EndAml)); 420 if (ACPI_FAILURE (Status)) 421 { 422 return (AE_TYPE); 423 } 424 425 /* 426 * For the resource template to be valid, one EndTag must appear 427 * at the very end of the ByteList, not before. (For proper disassembly 428 * of a ResourceTemplate, the buffer must not have any extra data after 429 * the EndTag.) 430 */ 431 if ((Aml + Length - sizeof (AML_RESOURCE_END_TAG)) != EndAml) 432 { 433 return (AE_AML_NO_RESOURCE_END_TAG); 434 } 435 436 /* 437 * All resource descriptors are valid, therefore this list appears 438 * to be a valid resource template 439 */ 440 return (AE_OK); 441} 442 443#endif 444