1 /******************************************************************************
3 * Module Name: dmrestag - Add tags to resource descriptors (Application-level)
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2012, Intel Corp.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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.
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.
45 #include <contrib/dev/acpica/include/acpi.h>
46 #include <contrib/dev/acpica/include/accommon.h>
47 #include <contrib/dev/acpica/include/acparser.h>
48 #include <contrib/dev/acpica/include/acdisasm.h>
49 #include <contrib/dev/acpica/include/acnamesp.h>
50 #include <contrib/dev/acpica/include/amlcode.h>
52 /* This module used for application-level code only */
54 #define _COMPONENT ACPI_CA_DISASSEMBLER
55 ACPI_MODULE_NAME ("dmrestag")
57 /* Local prototypes */
60 AcpiDmUpdateResourceName (
61 ACPI_NAMESPACE_NODE *ResourceNode);
66 const ACPI_RESOURCE_TAG *TagList);
69 AcpiDmGetResourceTag (
71 AML_RESOURCE *Resource,
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;
450 /* We are only interested in the CreateXxxxField opcodes */
452 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
453 if (OpInfo->Type != AML_TYPE_CREATE_FIELD)
458 /* Get the buffer term operand */
460 BufferNameOp = AcpiPsGetDepthNext (NULL, Op);
462 /* Must be a named buffer, not an arg or local or method call */
464 if (BufferNameOp->Common.AmlOpcode != AML_INT_NAMEPATH_OP)
469 /* Get the Index term, must be an integer constant to convert */
471 IndexOp = BufferNameOp->Common.Next;
472 OpInfo = AcpiPsGetOpcodeInfo (IndexOp->Common.AmlOpcode);
473 if (OpInfo->ObjectType != ACPI_TYPE_INTEGER)
478 /* Get the bit offset of the descriptor within the buffer */
480 if ((Op->Common.AmlOpcode == AML_CREATE_BIT_FIELD_OP) ||
481 (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP))
483 /* Index operand is a bit offset */
485 BitIndex = (UINT32) IndexOp->Common.Value.Integer;
489 /* Index operand is a byte offset, convert to bits */
491 BitIndex = (UINT32) ACPI_MUL_8 (IndexOp->Common.Value.Integer);
494 /* Lookup the buffer in the namespace */
496 Status = AcpiNsLookup (WalkState->ScopeInfo,
497 BufferNameOp->Common.Value.String, ACPI_TYPE_BUFFER,
498 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState,
500 if (ACPI_FAILURE (Status))
505 /* Validate object type, we must have a buffer */
507 if (BufferNode->Type != ACPI_TYPE_BUFFER)
512 /* Find the resource descriptor node corresponding to the index */
514 ResourceNode = AcpiDmGetResourceNode (BufferNode, BitIndex);
520 /* Translate the Index to a resource tag pathname */
522 Pathname = AcpiGetTagPathname (BufferNode, ResourceNode, BitIndex);
525 /* Complete the conversion of the Index to a symbol */
527 IndexOp->Common.AmlOpcode = AML_INT_NAMEPATH_OP;
528 IndexOp->Common.Value.String = Pathname;
533 /*******************************************************************************
535 * FUNCTION: AcpiDmGetResourceNode
537 * PARAMETERS: BufferNode - Node for the parent buffer
538 * BitIndex - Index into the resource descriptor
540 * RETURN: Namespace node for the resource descriptor. NULL if not found
542 * DESCRIPTION: Find a resource descriptor that corresponds to the bit index
544 ******************************************************************************/
546 static ACPI_NAMESPACE_NODE *
547 AcpiDmGetResourceNode (
548 ACPI_NAMESPACE_NODE *BufferNode,
551 ACPI_NAMESPACE_NODE *Node;
552 UINT32 ByteIndex = ACPI_DIV_8 (BitIndex);
556 * Child list contains an entry for each resource descriptor. Find
557 * the descriptor that corresponds to the Index.
559 * If there are no children, this is not a resource template
561 Node = BufferNode->Child;
565 * Check if the Index falls within this resource.
567 * Value contains the resource offset, Object contains the resource
568 * length (both in bytes)
570 if ((ByteIndex >= Node->Value) &&
571 (ByteIndex < (Node->Value + Node->Length)))
583 /*******************************************************************************
585 * FUNCTION: AcpiGetTagPathname
587 * PARAMETERS: BufferNode - Node for the parent buffer
588 * ResourceNode - Node for a resource descriptor
589 * BitIndex - Index into the resource descriptor
591 * RETURN: Full pathname for a resource tag. NULL if no match.
592 * Path is returned in AML (packed) format.
594 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag (full pathname)
596 ******************************************************************************/
600 ACPI_NAMESPACE_NODE *BufferNode,
601 ACPI_NAMESPACE_NODE *ResourceNode,
605 UINT32 ResourceBitIndex;
606 UINT8 ResourceTableIndex;
607 ACPI_SIZE RequiredSize;
610 ACPI_PARSE_OBJECT *Op;
615 /* Get the Op that contains the actual buffer data */
617 Op = BufferNode->Op->Common.Value.Arg;
618 Op = Op->Common.Next;
624 /* Get the individual resource descriptor and validate it */
626 Aml = ACPI_CAST_PTR (AML_RESOURCE,
627 &Op->Named.Data[ResourceNode->Value]);
629 Status = AcpiUtValidateResource (Aml, &ResourceTableIndex);
630 if (ACPI_FAILURE (Status))
635 /* Get offset into this descriptor (from offset into entire buffer) */
637 ResourceBitIndex = BitIndex - ACPI_MUL_8 (ResourceNode->Value);
639 /* Get the tag associated with this resource descriptor and offset */
641 Tag = AcpiDmGetResourceTag (ResourceBitIndex, Aml, ResourceTableIndex);
648 * Now that we know that we have a reference that can be converted to a
649 * symbol, change the name of the resource to a unique name.
651 AcpiDmUpdateResourceName (ResourceNode);
653 /* Get the full pathname to the parent buffer */
655 RequiredSize = AcpiNsGetPathnameLength (BufferNode);
661 Pathname = ACPI_ALLOCATE_ZEROED (RequiredSize + ACPI_PATH_SEGMENT_LENGTH);
667 Status = AcpiNsBuildExternalPath (BufferNode, RequiredSize, Pathname);
668 if (ACPI_FAILURE (Status))
674 * Create the full path to the resource and tag by: remove the buffer name,
675 * append the resource descriptor name, append a dot, append the tag name.
677 * TBD: Always using the full path is a bit brute force, the path can be
678 * often be optimized with carats (if the original buffer namepath is a
679 * single nameseg). This doesn't really matter, because these paths do not
680 * end up in the final compiled AML, it's just an appearance issue for the
683 Pathname[ACPI_STRLEN (Pathname) - ACPI_NAME_SIZE] = 0;
684 ACPI_STRNCAT (Pathname, ResourceNode->Name.Ascii, ACPI_NAME_SIZE);
685 ACPI_STRCAT (Pathname, ".");
686 ACPI_STRNCAT (Pathname, Tag, ACPI_NAME_SIZE);
688 /* Internalize the namepath to AML format */
690 AcpiNsInternalizeName (Pathname, &InternalPath);
691 ACPI_FREE (Pathname);
692 return (InternalPath);
696 /*******************************************************************************
698 * FUNCTION: AcpiDmUpdateResourceName
700 * PARAMETERS: ResourceNode - Node for a resource descriptor
702 * RETURN: Stores new name in the ResourceNode
704 * DESCRIPTION: Create a new, unique name for a resource descriptor. Used by
705 * both the disassembly of the descriptor itself and any symbolic
706 * references to the descriptor. Ignored if a unique name has
707 * already been assigned to the resource.
709 * NOTE: Single threaded, suitable for applications only!
711 ******************************************************************************/
714 AcpiDmUpdateResourceName (
715 ACPI_NAMESPACE_NODE *ResourceNode)
717 char Name[ACPI_NAME_SIZE];
720 /* Ignore if a unique name has already been assigned */
722 if (ResourceNode->Name.Integer != ACPI_DEFAULT_RESNAME)
727 /* Generate a new ACPI name for the descriptor */
730 Name[1] = AcpiGbl_Prefix[AcpiGbl_NextPrefix];
731 Name[2] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 4);
732 Name[3] = AcpiUtHexToAsciiChar ((UINT64) AcpiGbl_NextResourceId, 0);
734 /* Update globals for next name */
736 AcpiGbl_NextResourceId++;
737 if (AcpiGbl_NextResourceId >= 256)
739 AcpiGbl_NextResourceId = 0;
740 AcpiGbl_NextPrefix++;
741 if (AcpiGbl_NextPrefix > ACPI_NUM_RES_PREFIX)
743 AcpiGbl_NextPrefix = 0;
747 /* Change the resource descriptor name */
749 ResourceNode->Name.Integer = *ACPI_CAST_PTR (UINT32, &Name[0]);
753 /*******************************************************************************
755 * FUNCTION: AcpiDmGetResourceTag
757 * PARAMETERS: BitIndex - Index into the resource descriptor
758 * Resource - Pointer to the raw resource data
759 * ResourceIndex - Index correspoinding to the resource type
761 * RETURN: Pointer to the resource tag (ACPI_NAME). NULL if no match.
763 * DESCRIPTION: Convert a BitIndex into a symbolic resource tag.
765 * Note: ResourceIndex should be previously validated and guaranteed to ve
768 ******************************************************************************/
771 AcpiDmGetResourceTag (
773 AML_RESOURCE *Resource,
776 const ACPI_RESOURCE_TAG *TagList;
780 /* Get the tag list for this resource descriptor type */
782 TagList = AcpiGbl_ResourceTags[ResourceIndex];
785 * Handle descriptors that have multiple subtypes
787 switch (Resource->DescriptorType)
789 case ACPI_RESOURCE_NAME_ADDRESS16:
790 case ACPI_RESOURCE_NAME_ADDRESS32:
791 case ACPI_RESOURCE_NAME_ADDRESS64:
792 case ACPI_RESOURCE_NAME_EXTENDED_ADDRESS64:
795 * Subtype differentiation is the flags.
796 * Kindof brute force, but just blindly search for an index match
798 if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_MEMORY_RANGE)
800 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmMemoryFlagTags);
802 else if (Resource->Address.ResourceType == ACPI_ADDRESS_TYPE_IO_RANGE)
804 Tag = AcpiDmSearchTagList (BitIndex, AcpiDmIoFlagTags);
807 /* If we found a match, all done. Else, drop to normal search below */
815 case ACPI_RESOURCE_NAME_GPIO:
817 /* GPIO connection has 2 subtypes: Interrupt and I/O */
819 if (Resource->Gpio.ConnectionType > AML_RESOURCE_MAX_GPIOTYPE)
824 TagList = AcpiGbl_GpioResourceTags[Resource->Gpio.ConnectionType];
827 case ACPI_RESOURCE_NAME_SERIAL_BUS:
829 /* SerialBus has 3 subtypes: I2C, SPI, and UART */
831 if ((Resource->CommonSerialBus.Type == 0) ||
832 (Resource->CommonSerialBus.Type > AML_RESOURCE_MAX_SERIALBUSTYPE))
837 TagList = AcpiGbl_SerialResourceTags[Resource->CommonSerialBus.Type];
844 /* Search for a match against the BitIndex */
848 Tag = AcpiDmSearchTagList (BitIndex, TagList);
855 /*******************************************************************************
857 * FUNCTION: AcpiDmSearchTagList
859 * PARAMETERS: BitIndex - Index into the resource descriptor
860 * TagList - List to search
862 * RETURN: Pointer to a tag (ACPI_NAME). NULL if no match found.
864 * DESCRIPTION: Search a tag list for a match to the input BitIndex. Matches
865 * a fixed offset to a symbolic resource tag name.
867 ******************************************************************************/
870 AcpiDmSearchTagList (
872 const ACPI_RESOURCE_TAG *TagList)
876 * Walk the null-terminated tag list to find a matching bit offset.
877 * We are looking for an exact match.
879 for ( ; TagList->Tag; TagList++)
881 if (BitIndex == TagList->BitIndex)
883 return (TagList->Tag);
887 /* A matching offset was not found */
893 /*******************************************************************************
895 * FUNCTION: AcpiDmFindResources
897 * PARAMETERS: Root - Root of the parse tree
901 * DESCRIPTION: Add all ResourceTemplate declarations to the namespace. Each
902 * resource descriptor in each template is given a node -- used
903 * for later conversion of resource references to symbolic refs.
905 ******************************************************************************/
908 AcpiDmFindResources (
909 ACPI_PARSE_OBJECT *Root)
911 ACPI_PARSE_OBJECT *Op = Root;
912 ACPI_PARSE_OBJECT *Parent;
915 /* Walk the entire parse tree */
919 /* We are interested in Buffer() declarations */
921 if (Op->Common.AmlOpcode == AML_BUFFER_OP)
923 /* And only declarations of the form Name (XXXX, Buffer()... ) */
925 Parent = Op->Common.Parent;
926 if (Parent->Common.AmlOpcode == AML_NAME_OP)
929 * If the buffer is a resource template, add the individual
930 * resource descriptors to the namespace, as children of the
933 if (ACPI_SUCCESS (AcpiDmIsResourceTemplate (Op)))
935 Op->Common.DisasmOpcode = ACPI_DASM_RESOURCE;
936 AcpiDmAddResourcesToNamespace (Parent->Common.Node, Op);
941 Op = AcpiPsGetDepthNext (Root, Op);
946 /*******************************************************************************
948 * FUNCTION: AcpiDmAddResourcesToNamespace
950 * PARAMETERS: BufferNode - Node for the parent buffer
951 * Op - Parse op for the buffer
955 * DESCRIPTION: Add an entire resource template to the namespace. Each
956 * resource descriptor is added as a namespace node.
958 ******************************************************************************/
961 AcpiDmAddResourcesToNamespace (
962 ACPI_NAMESPACE_NODE *BufferNode,
963 ACPI_PARSE_OBJECT *Op)
965 ACPI_PARSE_OBJECT *NextOp;
968 /* Get to the ByteData list */
970 NextOp = Op->Common.Value.Arg;
971 NextOp = NextOp->Common.Next;
977 /* Set Node and Op to point to each other */
980 Op->Common.Node = BufferNode;
983 * Insert each resource into the namespace
984 * NextOp contains the Aml pointer and the Aml length
986 AcpiUtWalkAmlResources ((UINT8 *) NextOp->Named.Data,
987 (ACPI_SIZE) NextOp->Common.Value.Integer,
988 AcpiDmAddResourceToNamespace, BufferNode);
992 /*******************************************************************************
994 * FUNCTION: AcpiDmAddResourceToNamespace
996 * PARAMETERS: ACPI_WALK_AML_CALLBACK
997 * BufferNode - Node for the parent buffer
1001 * DESCRIPTION: Add one resource descriptor to the namespace as a child of the
1002 * parent buffer. The same name is used for each descriptor. This
1003 * is changed later to a unique name if the resource is actually
1004 * referenced by an AML operator.
1006 ******************************************************************************/
1009 AcpiDmAddResourceToNamespace (
1013 UINT8 ResourceIndex,
1017 ACPI_GENERIC_STATE ScopeInfo;
1018 ACPI_NAMESPACE_NODE *Node;
1021 /* TBD: Don't need to add descriptors that have no tags defined? */
1023 /* Add the resource to the namespace, as child of the buffer */
1025 ScopeInfo.Scope.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Context);
1026 Status = AcpiNsLookup (&ScopeInfo, "_TMP", ACPI_TYPE_LOCAL_RESOURCE,
1027 ACPI_IMODE_LOAD_PASS2,
1028 ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_PREFIX_IS_SCOPE,
1030 if (ACPI_FAILURE (Status))
1035 /* Set the name to the default, changed later if resource is referenced */
1037 Node->Name.Integer = ACPI_DEFAULT_RESNAME;
1039 /* Save the offset of the descriptor (within the original buffer) */
1041 Node->Value = Offset;
1042 Node->Length = Length;