1 /******************************************************************************
3 * Module Name: dmrestag - Add tags to resource descriptors (Application-level)
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2015, Intel Corp.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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20 * including a substantially similar Disclaimer requirement for further
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23 * of any contributors may be used to endorse or promote products derived
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51 /* This module used for application-level code only */
53 #define _COMPONENT ACPI_CA_DISASSEMBLER
54 ACPI_MODULE_NAME ("dmrestag")
56 /* Local prototypes */
59 AcpiDmUpdateResourceName (
60 ACPI_NAMESPACE_NODE *ResourceNode);
65 const ACPI_RESOURCE_TAG *TagList);
68 AcpiDmGetResourceTag (
70 AML_RESOURCE *Resource,
75 ACPI_PARSE_OBJECT *Op,
76 ACPI_NAMESPACE_NODE *BufferNode,
77 ACPI_NAMESPACE_NODE *ResourceNode,
80 static ACPI_NAMESPACE_NODE *
81 AcpiDmGetResourceNode (
82 ACPI_NAMESPACE_NODE *BufferNode,
86 AcpiDmAddResourceToNamespace (
94 AcpiDmAddResourcesToNamespace (
95 ACPI_NAMESPACE_NODE *BufferNode,
96 ACPI_PARSE_OBJECT *Op);
99 /******************************************************************************
101 * Resource Tag tables
103 * These are the predefined tags that refer to elements of a resource
104 * descriptor. Each name and offset is defined in the ACPI specification.
106 * Each table entry contains the bit offset of the field and the associated
109 ******************************************************************************/
111 static const ACPI_RESOURCE_TAG AcpiDmIrqTags[] =
113 {( 1 * 8), ACPI_RESTAG_INTERRUPT},
114 {( 3 * 8) + 0, ACPI_RESTAG_INTERRUPTTYPE},
115 {( 3 * 8) + 3, ACPI_RESTAG_INTERRUPTLEVEL},
116 {( 3 * 8) + 4, ACPI_RESTAG_INTERRUPTSHARE},
120 static const ACPI_RESOURCE_TAG AcpiDmDmaTags[] =
122 {( 1 * 8), ACPI_RESTAG_DMA},
123 {( 2 * 8) + 0, ACPI_RESTAG_XFERTYPE},
124 {( 2 * 8) + 2, ACPI_RESTAG_BUSMASTER},
125 {( 2 * 8) + 5, ACPI_RESTAG_DMATYPE},
129 static const ACPI_RESOURCE_TAG AcpiDmIoTags[] =
131 {( 1 * 8) + 0, ACPI_RESTAG_DECODE},
132 {( 2 * 8), ACPI_RESTAG_MINADDR},
133 {( 4 * 8), ACPI_RESTAG_MAXADDR},
134 {( 6 * 8), ACPI_RESTAG_ALIGNMENT},
135 {( 7 * 8), ACPI_RESTAG_LENGTH},
139 static const ACPI_RESOURCE_TAG AcpiDmFixedIoTags[] =
141 {( 1 * 8), ACPI_RESTAG_BASEADDRESS},
142 {( 3 * 8), ACPI_RESTAG_LENGTH},
146 static const ACPI_RESOURCE_TAG AcpiDmFixedDmaTags[] =
148 {( 1 * 8), ACPI_RESTAG_DMA},
149 {( 3 * 8), ACPI_RESTAG_DMATYPE},
150 {( 5 * 8), ACPI_RESTAG_XFERTYPE},
154 static const ACPI_RESOURCE_TAG AcpiDmMemory24Tags[] =
156 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE},
157 {( 4 * 8), ACPI_RESTAG_MINADDR},
158 {( 6 * 8), ACPI_RESTAG_MAXADDR},
159 {( 8 * 8), ACPI_RESTAG_ALIGNMENT},
160 {(10 * 8), ACPI_RESTAG_LENGTH},
164 static const ACPI_RESOURCE_TAG AcpiDmRegisterTags[] =
166 {( 3 * 8), ACPI_RESTAG_ADDRESSSPACE},
167 {( 4 * 8), ACPI_RESTAG_REGISTERBITWIDTH},
168 {( 5 * 8), ACPI_RESTAG_REGISTERBITOFFSET},
169 {( 6 * 8), ACPI_RESTAG_ACCESSSIZE},
170 {( 7 * 8), ACPI_RESTAG_ADDRESS},
174 static const ACPI_RESOURCE_TAG AcpiDmMemory32Tags[] =
176 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE},
177 {( 4 * 8), ACPI_RESTAG_MINADDR},
178 {( 8 * 8), ACPI_RESTAG_MAXADDR},
179 {(12 * 8), ACPI_RESTAG_ALIGNMENT},
180 {(16 * 8), ACPI_RESTAG_LENGTH},
184 static const ACPI_RESOURCE_TAG AcpiDmFixedMemory32Tags[] =
186 {( 3 * 8) + 0, ACPI_RESTAG_READWRITETYPE},
187 {( 4 * 8), ACPI_RESTAG_BASEADDRESS},
188 {( 8 * 8), ACPI_RESTAG_LENGTH},
192 static const ACPI_RESOURCE_TAG AcpiDmInterruptTags[] =
194 {( 3 * 8) + 1, ACPI_RESTAG_INTERRUPTTYPE},
195 {( 3 * 8) + 2, ACPI_RESTAG_INTERRUPTLEVEL},
196 {( 3 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE},
197 {( 5 * 8), ACPI_RESTAG_INTERRUPT},
201 static const ACPI_RESOURCE_TAG AcpiDmAddress16Tags[] =
203 {( 4 * 8) + 1, ACPI_RESTAG_DECODE},
204 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE},
205 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE},
206 {( 6 * 8), ACPI_RESTAG_GRANULARITY},
207 {( 8 * 8), ACPI_RESTAG_MINADDR},
208 {(10 * 8), ACPI_RESTAG_MAXADDR},
209 {(12 * 8), ACPI_RESTAG_TRANSLATION},
210 {(14 * 8), ACPI_RESTAG_LENGTH},
214 static const ACPI_RESOURCE_TAG AcpiDmAddress32Tags[] =
216 {( 4 * 8) + 1, ACPI_RESTAG_DECODE},
217 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE},
218 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE},
219 {( 6 * 8), ACPI_RESTAG_GRANULARITY},
220 {(10 * 8), ACPI_RESTAG_MINADDR},
221 {(14 * 8), ACPI_RESTAG_MAXADDR},
222 {(18 * 8), ACPI_RESTAG_TRANSLATION},
223 {(22 * 8), ACPI_RESTAG_LENGTH},
227 static const ACPI_RESOURCE_TAG AcpiDmAddress64Tags[] =
229 {( 4 * 8) + 1, ACPI_RESTAG_DECODE},
230 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE},
231 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE},
232 {( 6 * 8), ACPI_RESTAG_GRANULARITY},
233 {(14 * 8), ACPI_RESTAG_MINADDR},
234 {(22 * 8), ACPI_RESTAG_MAXADDR},
235 {(30 * 8), ACPI_RESTAG_TRANSLATION},
236 {(38 * 8), ACPI_RESTAG_LENGTH},
240 static const ACPI_RESOURCE_TAG AcpiDmExtendedAddressTags[] =
242 {( 4 * 8) + 1, ACPI_RESTAG_DECODE},
243 {( 4 * 8) + 2, ACPI_RESTAG_MINTYPE},
244 {( 4 * 8) + 3, ACPI_RESTAG_MAXTYPE},
245 {( 8 * 8), ACPI_RESTAG_GRANULARITY},
246 {(16 * 8), ACPI_RESTAG_MINADDR},
247 {(24 * 8), ACPI_RESTAG_MAXADDR},
248 {(32 * 8), ACPI_RESTAG_TRANSLATION},
249 {(40 * 8), ACPI_RESTAG_LENGTH},
250 {(48 * 8), ACPI_RESTAG_TYPESPECIFICATTRIBUTES},
254 /* Subtype tables for GPIO descriptors */
256 static const ACPI_RESOURCE_TAG AcpiDmGpioIntTags[] =
258 {( 7 * 8) + 0, ACPI_RESTAG_MODE},
259 {( 7 * 8) + 1, ACPI_RESTAG_POLARITY},
260 {( 7 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE},
261 {( 9 * 8), ACPI_RESTAG_PINCONFIG},
262 {(10 * 8), ACPI_RESTAG_DRIVESTRENGTH},
263 {(12 * 8), ACPI_RESTAG_DEBOUNCETIME},
267 static const ACPI_RESOURCE_TAG AcpiDmGpioIoTags[] =
269 {( 7 * 8) + 0, ACPI_RESTAG_IORESTRICTION},
270 {( 7 * 8) + 3, ACPI_RESTAG_INTERRUPTSHARE},
271 {( 9 * 8), ACPI_RESTAG_PINCONFIG},
272 {(10 * 8), ACPI_RESTAG_DRIVESTRENGTH},
273 {(12 * 8), ACPI_RESTAG_DEBOUNCETIME},
277 /* Subtype tables for SerialBus descriptors */
279 static const ACPI_RESOURCE_TAG AcpiDmI2cSerialBusTags[] =
281 {( 6 * 8) + 0, ACPI_RESTAG_SLAVEMODE},
282 {( 7 * 8) + 0, ACPI_RESTAG_MODE},
283 {(12 * 8), ACPI_RESTAG_SPEED},
284 {(16 * 8), ACPI_RESTAG_ADDRESS},
288 static const ACPI_RESOURCE_TAG AcpiDmSpiSerialBusTags[] =
290 {( 6 * 8) + 0, ACPI_RESTAG_SLAVEMODE},
291 {( 7 * 8) + 0, ACPI_RESTAG_MODE},
292 {( 7 * 8) + 1, ACPI_RESTAG_DEVICEPOLARITY},
293 {(12 * 8), ACPI_RESTAG_SPEED},
294 {(16 * 8), ACPI_RESTAG_LENGTH},
295 {(17 * 8), ACPI_RESTAG_PHASE},
296 {(18 * 8), ACPI_RESTAG_POLARITY},
297 {(19 * 8), ACPI_RESTAG_ADDRESS},
301 static const ACPI_RESOURCE_TAG AcpiDmUartSerialBusTags[] =
303 {( 6 * 8) + 0, ACPI_RESTAG_SLAVEMODE}, /* Note: not part of original macro */
304 {( 7 * 8) + 0, ACPI_RESTAG_FLOWCONTROL},
305 {( 7 * 8) + 2, ACPI_RESTAG_STOPBITS},
306 {( 7 * 8) + 4, ACPI_RESTAG_LENGTH},
307 {( 7 * 8) + 7, ACPI_RESTAG_ENDIANNESS},
308 {(12 * 8), ACPI_RESTAG_SPEED},
309 {(16 * 8), ACPI_RESTAG_LENGTH_RX},
310 {(18 * 8), ACPI_RESTAG_LENGTH_TX},
311 {(20 * 8), ACPI_RESTAG_PARITY},
312 {(21 * 8), ACPI_RESTAG_LINE},
316 /* Subtype tables for Address descriptor type-specific flags */
318 static const ACPI_RESOURCE_TAG AcpiDmMemoryFlagTags[] =
320 {( 5 * 8) + 0, ACPI_RESTAG_READWRITETYPE},
321 {( 5 * 8) + 1, ACPI_RESTAG_MEMTYPE},
322 {( 5 * 8) + 3, ACPI_RESTAG_MEMATTRIBUTES},
323 {( 5 * 8) + 5, ACPI_RESTAG_TYPE},
327 static const ACPI_RESOURCE_TAG AcpiDmIoFlagTags[] =
329 {( 5 * 8) + 0, ACPI_RESTAG_RANGETYPE},
330 {( 5 * 8) + 4, ACPI_RESTAG_TYPE},
331 {( 5 * 8) + 5, ACPI_RESTAG_TRANSTYPE},
337 * Dispatch table used to obtain the correct tag table for a descriptor.
339 * A NULL in this table means one of three things:
340 * 1) The descriptor ID is reserved and invalid
341 * 2) The descriptor has no tags associated with it
342 * 3) The descriptor has subtypes and a separate table will be used.
344 static const ACPI_RESOURCE_TAG *AcpiGbl_ResourceTags[] =
346 /* Small descriptors */
348 NULL, /* 0x00, Reserved */
349 NULL, /* 0x01, Reserved */
350 NULL, /* 0x02, Reserved */
351 NULL, /* 0x03, Reserved */
352 AcpiDmIrqTags, /* 0x04, ACPI_RESOURCE_NAME_IRQ_FORMAT */
353 AcpiDmDmaTags, /* 0x05, ACPI_RESOURCE_NAME_DMA_FORMAT */
354 NULL, /* 0x06, ACPI_RESOURCE_NAME_START_DEPENDENT */
355 NULL, /* 0x07, ACPI_RESOURCE_NAME_END_DEPENDENT */
356 AcpiDmIoTags, /* 0x08, ACPI_RESOURCE_NAME_IO_PORT */
357 AcpiDmFixedIoTags, /* 0x09, ACPI_RESOURCE_NAME_FIXED_IO_PORT */
358 AcpiDmFixedDmaTags, /* 0x0A, ACPI_RESOURCE_NAME_FIXED_DMA */
359 NULL, /* 0x0B, Reserved */
360 NULL, /* 0x0C, Reserved */
361 NULL, /* 0x0D, Reserved */
362 NULL, /* 0x0E, ACPI_RESOURCE_NAME_SMALL_VENDOR */
363 NULL, /* 0x0F, ACPI_RESOURCE_NAME_END_TAG (not used) */
365 /* Large descriptors */
367 NULL, /* 0x00, Reserved */
368 AcpiDmMemory24Tags, /* 0x01, ACPI_RESOURCE_NAME_MEMORY_24 */
369 AcpiDmRegisterTags, /* 0x02, ACPI_RESOURCE_NAME_GENERIC_REGISTER */
370 NULL, /* 0x03, Reserved */
371 NULL, /* 0x04, ACPI_RESOURCE_NAME_LARGE_VENDOR */
372 AcpiDmMemory32Tags, /* 0x05, ACPI_RESOURCE_NAME_MEMORY_32 */
373 AcpiDmFixedMemory32Tags, /* 0x06, ACPI_RESOURCE_NAME_FIXED_MEMORY_32 */
374 AcpiDmAddress32Tags, /* 0x07, ACPI_RESOURCE_NAME_DWORD_ADDRESS_SPACE */
375 AcpiDmAddress16Tags, /* 0x08, ACPI_RESOURCE_NAME_WORD_ADDRESS_SPACE */
376 AcpiDmInterruptTags, /* 0x09, ACPI_RESOURCE_NAME_EXTENDED_XRUPT */
377 AcpiDmAddress64Tags, /* 0x0A, ACPI_RESOURCE_NAME_QWORD_ADDRESS_SPACE */
378 AcpiDmExtendedAddressTags, /* 0x0B, ACPI_RESOURCE_NAME_EXTENDED_ADDRESS_SPACE */
379 NULL, /* 0x0C, ACPI_RESOURCE_NAME_GPIO - Use Subtype table below */
380 NULL, /* 0x0D, Reserved */
381 NULL /* 0x0E, ACPI_RESOURCE_NAME_SERIAL_BUS - Use Subtype table below */
386 static const ACPI_RESOURCE_TAG *AcpiGbl_GpioResourceTags[] =
388 AcpiDmGpioIntTags, /* 0x00 Interrupt Connection */
389 AcpiDmGpioIoTags /* 0x01 I/O Connection */
392 /* Serial Bus Subtypes */
394 static const ACPI_RESOURCE_TAG *AcpiGbl_SerialResourceTags[] =
396 NULL, /* 0x00 Reserved */
397 AcpiDmI2cSerialBusTags, /* 0x01 I2C SerialBus */
398 AcpiDmSpiSerialBusTags, /* 0x02 SPI SerialBus */
399 AcpiDmUartSerialBusTags /* 0x03 UART SerialBus */
403 * Globals used to generate unique resource descriptor names. We use names that
404 * start with underscore and a prefix letter that is not used by other ACPI
405 * reserved names. To this, we append hex 0x00 through 0xFF. These 5 prefixes
406 * allow for 5*256 = 1280 unique names, probably sufficient for any single ASL
407 * file. If this becomes too small, we can use alpha+numerals for a total
410 #define ACPI_NUM_RES_PREFIX 5
412 static UINT32 AcpiGbl_NextResourceId = 0;
413 static UINT8 AcpiGbl_NextPrefix = 0;
414 static char AcpiGbl_Prefix[ACPI_NUM_RES_PREFIX] =
415 {'Y','Z','J','K','X'};
418 /*******************************************************************************
420 * FUNCTION: AcpiDmCheckResourceReference
422 * PARAMETERS: Op - Parse Op for the AML opcode
423 * WalkState - Current walk state (with valid scope)
427 * DESCRIPTION: Convert a reference to a resource descriptor to a symbolic
428 * reference if possible
430 * NOTE: Bit index is used to transparently handle both resource bit
431 * fields and byte fields.
433 ******************************************************************************/
436 AcpiDmCheckResourceReference (
437 ACPI_PARSE_OBJECT *Op,
438 ACPI_WALK_STATE *WalkState)
441 ACPI_PARSE_OBJECT *BufferNameOp;
442 ACPI_PARSE_OBJECT *IndexOp;
443 ACPI_NAMESPACE_NODE *BufferNode;
444 ACPI_NAMESPACE_NODE *ResourceNode;
445 const ACPI_OPCODE_INFO *OpInfo;
449 /* We are only interested in the CreateXxxxField opcodes */
451 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
452 if (OpInfo->Type != AML_TYPE_CREATE_FIELD)
457 /* Get the buffer term operand */
459 BufferNameOp = AcpiPsGetDepthNext (NULL, Op);
461 /* Must be a named buffer, not an arg or local or method call */
463 if (BufferNameOp->Common.AmlOpcode != AML_INT_NAMEPATH_OP)
468 /* Get the Index term, must be an integer constant to convert */
470 IndexOp = BufferNameOp->Common.Next;
472 /* Major cheat: The Node field is also used for the Tag ptr. Clear it now */
474 IndexOp->Common.Node = NULL;
476 OpInfo = AcpiPsGetOpcodeInfo (IndexOp->Common.AmlOpcode);
477 if (OpInfo->ObjectType != ACPI_TYPE_INTEGER)
482 /* Get the bit offset of the descriptor within the buffer */
484 if ((Op->Common.AmlOpcode == AML_CREATE_BIT_FIELD_OP) ||
485 (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP))
487 /* Index operand is a bit offset */
489 BitIndex = (UINT32) IndexOp->Common.Value.Integer;
493 /* Index operand is a byte offset, convert to bits */
495 BitIndex = (UINT32) ACPI_MUL_8 (IndexOp->Common.Value.Integer);
498 /* Lookup the buffer in the namespace */
500 Status = AcpiNsLookup (WalkState->ScopeInfo,
501 BufferNameOp->Common.Value.String, ACPI_TYPE_BUFFER,
502 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState,
504 if (ACPI_FAILURE (Status))
509 /* Validate object type, we must have a buffer */
511 if (BufferNode->Type != ACPI_TYPE_BUFFER)
516 /* Find the resource descriptor node corresponding to the index */
518 ResourceNode = AcpiDmGetResourceNode (BufferNode, BitIndex);
524 /* Translate the Index to a resource tag pathname */
526 AcpiGetTagPathname (IndexOp, BufferNode, ResourceNode, BitIndex);
530 /*******************************************************************************
532 * FUNCTION: AcpiDmGetResourceNode
534 * PARAMETERS: BufferNode - Node for the parent buffer
535 * BitIndex - Index into the resource descriptor
537 * RETURN: Namespace node for the resource descriptor. NULL if not found
539 * DESCRIPTION: Find a resource descriptor that corresponds to the bit index
541 ******************************************************************************/
543 static ACPI_NAMESPACE_NODE *
544 AcpiDmGetResourceNode (
545 ACPI_NAMESPACE_NODE *BufferNode,
548 ACPI_NAMESPACE_NODE *Node;
549 UINT32 ByteIndex = ACPI_DIV_8 (BitIndex);
553 * Child list contains an entry for each resource descriptor. Find
554 * the descriptor that corresponds to the Index.
556 * If there are no children, this is not a resource template
558 Node = BufferNode->Child;
562 * Check if the Index falls within this resource.
564 * Value contains the resource offset, Object contains the resource
565 * length (both in bytes)
567 if ((ByteIndex >= Node->Value) &&
568 (ByteIndex < (Node->Value + Node->Length)))
580 /*******************************************************************************
582 * FUNCTION: AcpiGetTagPathname
584 * PARAMETERS: BufferNode - Node for the parent buffer
585 * ResourceNode - Node for a resource descriptor
586 * BitIndex - Index into the resource descriptor
588 * RETURN: Full pathname for a resource tag. NULL if no match.
589 * Path is returned in AML (packed) format.
591 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag (full pathname)
593 ******************************************************************************/
597 ACPI_PARSE_OBJECT *IndexOp,
598 ACPI_NAMESPACE_NODE *BufferNode,
599 ACPI_NAMESPACE_NODE *ResourceNode,
603 UINT32 ResourceBitIndex;
604 UINT8 ResourceTableIndex;
605 ACPI_SIZE RequiredSize;
608 ACPI_PARSE_OBJECT *Op;
613 /* Get the Op that contains the actual buffer data */
615 Op = BufferNode->Op->Common.Value.Arg;
616 Op = Op->Common.Next;
622 /* Get the individual resource descriptor and validate it */
624 Aml = ACPI_CAST_PTR (AML_RESOURCE,
625 &Op->Named.Data[ResourceNode->Value]);
627 Status = AcpiUtValidateResource (NULL, Aml, &ResourceTableIndex);
628 if (ACPI_FAILURE (Status))
633 /* Get offset into this descriptor (from offset into entire buffer) */
635 ResourceBitIndex = BitIndex - ACPI_MUL_8 (ResourceNode->Value);
637 /* Get the tag associated with this resource descriptor and offset */
639 Tag = AcpiDmGetResourceTag (ResourceBitIndex, Aml, ResourceTableIndex);
646 * Now that we know that we have a reference that can be converted to a
647 * symbol, change the name of the resource to a unique name.
649 AcpiDmUpdateResourceName (ResourceNode);
651 /* Get the full pathname to the parent buffer */
653 RequiredSize = AcpiNsBuildNormalizedPath (BufferNode, NULL, 0, FALSE);
659 Pathname = ACPI_ALLOCATE_ZEROED (RequiredSize + ACPI_PATH_SEGMENT_LENGTH);
665 (void) AcpiNsBuildNormalizedPath (BufferNode, Pathname,
666 RequiredSize, FALSE);
669 * Create the full path to the resource and tag by: remove the buffer name,
670 * append the resource descriptor name, append a dot, append the tag name.
672 * TBD: Always using the full path is a bit brute force, the path can be
673 * often be optimized with carats (if the original buffer namepath is a
674 * single nameseg). This doesn't really matter, because these paths do not
675 * end up in the final compiled AML, it's just an appearance issue for the
678 Pathname[strlen (Pathname) - ACPI_NAME_SIZE] = 0;
679 strncat (Pathname, ResourceNode->Name.Ascii, ACPI_NAME_SIZE);
680 strcat (Pathname, ".");
681 strncat (Pathname, Tag, ACPI_NAME_SIZE);
683 /* Internalize the namepath to AML format */
685 AcpiNsInternalizeName (Pathname, &InternalPath);
686 ACPI_FREE (Pathname);
688 /* Update the Op with the symbol */
690 AcpiPsInitOp (IndexOp, AML_INT_NAMEPATH_OP);
691 IndexOp->Common.Value.String = InternalPath;
693 /* We will need the tag later. Cheat by putting it in the Node field */
695 IndexOp->Common.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Tag);
696 return (InternalPath);
700 /*******************************************************************************
702 * FUNCTION: AcpiDmUpdateResourceName
704 * PARAMETERS: ResourceNode - Node for a resource descriptor
706 * RETURN: Stores new name in the ResourceNode
708 * DESCRIPTION: Create a new, unique name for a resource descriptor. Used by
709 * both the disassembly of the descriptor itself and any symbolic
710 * references to the descriptor. Ignored if a unique name has
711 * already been assigned to the resource.
713 * NOTE: Single threaded, suitable for applications only!
715 ******************************************************************************/
718 AcpiDmUpdateResourceName (
719 ACPI_NAMESPACE_NODE *ResourceNode)
721 char Name[ACPI_NAME_SIZE];
724 /* Ignore if a unique name has already been assigned */
726 if (ResourceNode->Name.Integer != ACPI_DEFAULT_RESNAME)
731 /* Generate a new ACPI name for the descriptor */
734 Name[1] = AcpiGbl_Prefix[AcpiGbl_NextPrefix];
735 Name[2] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 4);
736 Name[3] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 0);
738 /* Update globals for next name */
740 AcpiGbl_NextResourceId++;
741 if (AcpiGbl_NextResourceId >= 256)
743 AcpiGbl_NextResourceId = 0;
744 AcpiGbl_NextPrefix++;
745 if (AcpiGbl_NextPrefix > ACPI_NUM_RES_PREFIX)
747 AcpiGbl_NextPrefix = 0;
751 /* Change the resource descriptor name */
753 ResourceNode->Name.Integer = *ACPI_CAST_PTR (UINT32, &Name[0]);
757 /*******************************************************************************
759 * FUNCTION: AcpiDmGetResourceTag
761 * PARAMETERS: BitIndex - Index into the resource descriptor
762 * Resource - Pointer to the raw resource data
763 * ResourceIndex - Index correspoinding to the resource type
765 * RETURN: Pointer to the resource tag (ACPI_NAME). NULL if no match.
767 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag.
769 * Note: ResourceIndex should be previously validated and guaranteed to ve
772 ******************************************************************************/
775 AcpiDmGetResourceTag (
777 AML_RESOURCE *Resource,
780 const ACPI_RESOURCE_TAG *TagList;
784 /* Get the tag list for this resource descriptor type */
786 TagList = AcpiGbl_ResourceTags[ResourceIndex];
789 * Handle descriptors that have multiple subtypes
791 switch (Resource->DescriptorType)
793 case ACPI_RESOURCE_NAME_ADDRESS16:
794 case ACPI_RESOURCE_NAME_ADDRESS32:
795 case ACPI_RESOURCE_NAME_ADDRESS64:
796 case ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64:
798 * Subtype differentiation is the flags.
799 * Kindof brute force, but just blindly search for an index match
801 if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_MEMORY_RANGE)
803 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmMemoryFlagTags);
805 else if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_IO_RANGE)
807 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmIoFlagTags);
810 /* If we found a match, all done. Else, drop to normal search below */
818 case ACPI_RESOURCE_NAME_GPIO:
820 /* GPIO connection has 2 subtypes: Interrupt and I/O */
822 if (Resource->Gpio.ConnectionType > AML_RESOURCE_MAX_GPIOTYPE)
827 TagList = AcpiGbl_GpioResourceTags[Resource->Gpio.ConnectionType];
830 case ACPI_RESOURCE_NAME_SERIAL_BUS:
832 /* SerialBus has 3 subtypes: I2C, SPI, and UART */
834 if ((Resource->CommonSerialBus.Type == 0) ||
835 (Resource->CommonSerialBus.Type > AML_RESOURCE_MAX_SERIALBUSTYPE))
840 TagList = AcpiGbl_SerialResourceTags[Resource->CommonSerialBus.Type];
848 /* Search for a match against the BitIndex */
852 Tag = AcpiDmSearchTagList (BitIndex, TagList);
859 /*******************************************************************************
861 * FUNCTION: AcpiDmSearchTagList
863 * PARAMETERS: BitIndex - Index into the resource descriptor
864 * TagList - List to search
866 * RETURN: Pointer to a tag (ACPI_NAME). NULL if no match found.
868 * DESCRIPTION: Search a tag list for a match to the input BitIndex. Matches
869 * a fixed offset to a symbolic resource tag name.
871 ******************************************************************************/
874 AcpiDmSearchTagList (
876 const ACPI_RESOURCE_TAG *TagList)
880 * Walk the null-terminated tag list to find a matching bit offset.
881 * We are looking for an exact match.
883 for ( ; TagList->Tag; TagList++)
885 if (BitIndex == TagList->BitIndex)
887 return (TagList->Tag);
891 /* A matching offset was not found */
897 /*******************************************************************************
899 * FUNCTION: AcpiDmFindResources
901 * PARAMETERS: Root - Root of the parse tree
905 * DESCRIPTION: Add all ResourceTemplate declarations to the namespace. Each
906 * resource descriptor in each template is given a node -- used
907 * for later conversion of resource references to symbolic refs.
909 ******************************************************************************/
912 AcpiDmFindResources (
913 ACPI_PARSE_OBJECT *Root)
915 ACPI_PARSE_OBJECT *Op = Root;
916 ACPI_PARSE_OBJECT *Parent;
919 /* Walk the entire parse tree */
923 /* We are interested in Buffer() declarations */
925 if (Op->Common.AmlOpcode == AML_BUFFER_OP)
927 /* And only declarations of the form Name (XXXX, Buffer()... ) */
929 Parent = Op->Common.Parent;
930 if (Parent->Common.AmlOpcode == AML_NAME_OP)
933 * If the buffer is a resource template, add the individual
934 * resource descriptors to the namespace, as children of the
937 if (ACPI_SUCCESS (AcpiDmIsResourceTemplate (NULL, Op)))
939 Op->Common.DisasmOpcode = ACPI_DASM_RESOURCE;
940 AcpiDmAddResourcesToNamespace (Parent->Common.Node, Op);
945 Op = AcpiPsGetDepthNext (Root, Op);
950 /*******************************************************************************
952 * FUNCTION: AcpiDmAddResourcesToNamespace
954 * PARAMETERS: BufferNode - Node for the parent buffer
955 * Op - Parse op for the buffer
959 * DESCRIPTION: Add an entire resource template to the namespace. Each
960 * resource descriptor is added as a namespace node.
962 ******************************************************************************/
965 AcpiDmAddResourcesToNamespace (
966 ACPI_NAMESPACE_NODE *BufferNode,
967 ACPI_PARSE_OBJECT *Op)
969 ACPI_PARSE_OBJECT *NextOp;
972 /* Get to the ByteData list */
974 NextOp = Op->Common.Value.Arg;
975 NextOp = NextOp->Common.Next;
981 /* Set Node and Op to point to each other */
984 Op->Common.Node = BufferNode;
987 * Insert each resource into the namespace
988 * NextOp contains the Aml pointer and the Aml length
990 AcpiUtWalkAmlResources (NULL, (UINT8 *) NextOp->Named.Data,
991 (ACPI_SIZE) NextOp->Common.Value.Integer,
992 AcpiDmAddResourceToNamespace, (void **) BufferNode);
996 /*******************************************************************************
998 * FUNCTION: AcpiDmAddResourceToNamespace
1000 * PARAMETERS: ACPI_WALK_AML_CALLBACK
1001 * BufferNode - Node for the parent buffer
1005 * DESCRIPTION: Add one resource descriptor to the namespace as a child of the
1006 * parent buffer. The same name is used for each descriptor. This
1007 * is changed later to a unique name if the resource is actually
1008 * referenced by an AML operator.
1010 ******************************************************************************/
1013 AcpiDmAddResourceToNamespace (
1017 UINT8 ResourceIndex,
1021 ACPI_GENERIC_STATE ScopeInfo;
1022 ACPI_NAMESPACE_NODE *Node;
1025 /* TBD: Don't need to add descriptors that have no tags defined? */
1027 /* Add the resource to the namespace, as child of the buffer */
1029 ScopeInfo.Scope.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Context);
1030 Status = AcpiNsLookup (&ScopeInfo, "_TMP", ACPI_TYPE_LOCAL_RESOURCE,
1031 ACPI_IMODE_LOAD_PASS2,
1032 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_PREFIX_IS_SCOPE,
1034 if (ACPI_FAILURE (Status))
1039 /* Set the name to the default, changed later if resource is referenced */
1041 Node->Name.Integer = ACPI_DEFAULT_RESNAME;
1043 /* Save the offset of the descriptor (within the original buffer) */
1045 Node->Value = Offset;
1046 Node->Length = Length;