1 /*******************************************************************************
3 * Module Name: utresrc - Resource management utilities
5 ******************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2012, Intel Corp.
12 * All rights reserved.
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
37 * The above copyright and patent license is granted only if the following
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
72 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
80 * 4. Disclaimer and Export Compliance
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
114 *****************************************************************************/
117 #define __UTRESRC_C__
120 #include "accommon.h"
124 #define _COMPONENT ACPI_UTILITIES
125 ACPI_MODULE_NAME ("utresrc")
128 #if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUGGER)
131 * Strings used to decode resource descriptors.
132 * Used by both the disassembler and the debugger resource dump routines
134 const char *AcpiGbl_BmDecode[] =
140 const char *AcpiGbl_ConfigDecode[] =
142 "0 - Good Configuration",
143 "1 - Acceptable Configuration",
144 "2 - Suboptimal Configuration",
145 "3 - ***Invalid Configuration***",
148 const char *AcpiGbl_ConsumeDecode[] =
154 const char *AcpiGbl_DecDecode[] =
160 const char *AcpiGbl_HeDecode[] =
166 const char *AcpiGbl_IoDecode[] =
172 const char *AcpiGbl_LlDecode[] =
178 const char *AcpiGbl_MaxDecode[] =
184 const char *AcpiGbl_MemDecode[] =
192 const char *AcpiGbl_MinDecode[] =
198 const char *AcpiGbl_MtpDecode[] =
200 "AddressRangeMemory",
201 "AddressRangeReserved",
206 const char *AcpiGbl_RngDecode[] =
214 const char *AcpiGbl_RwDecode[] =
220 const char *AcpiGbl_ShrDecode[] =
226 const char *AcpiGbl_SizDecode[] =
234 const char *AcpiGbl_TrsDecode[] =
240 const char *AcpiGbl_TtpDecode[] =
246 const char *AcpiGbl_TypDecode[] =
254 const char *AcpiGbl_PpcDecode[] =
262 const char *AcpiGbl_IorDecode[] =
265 "IoRestrictionInputOnly",
266 "IoRestrictionOutputOnly",
267 "IoRestrictionNoneAndPreserve"
270 const char *AcpiGbl_DtsDecode[] =
280 /* GPIO connection type */
282 const char *AcpiGbl_CtDecode[] =
288 /* Serial bus type */
290 const char *AcpiGbl_SbtDecode[] =
292 "/* UNKNOWN serial bus type */",
298 /* I2C serial bus access mode */
300 const char *AcpiGbl_AmDecode[] =
302 "AddressingMode7Bit",
303 "AddressingMode10Bit"
306 /* I2C serial bus slave mode */
308 const char *AcpiGbl_SmDecode[] =
310 "ControllerInitiated",
314 /* SPI serial bus wire mode */
316 const char *AcpiGbl_WmDecode[] =
322 /* SPI serial clock phase */
324 const char *AcpiGbl_CphDecode[] =
330 /* SPI serial bus clock polarity */
332 const char *AcpiGbl_CpoDecode[] =
338 /* SPI serial bus device polarity */
340 const char *AcpiGbl_DpDecode[] =
346 /* UART serial bus endian */
348 const char *AcpiGbl_EdDecode[] =
354 /* UART serial bus bits per byte */
356 const char *AcpiGbl_BpbDecode[] =
363 "/* UNKNOWN Bits per byte */",
364 "/* UNKNOWN Bits per byte */",
365 "/* UNKNOWN Bits per byte */"
368 /* UART serial bus stop bits */
370 const char *AcpiGbl_SbDecode[] =
374 "StopBitsOnePlusHalf",
378 /* UART serial bus flow control */
380 const char *AcpiGbl_FcDecode[] =
383 "FlowControlHardware",
385 "/* UNKNOWN flow control keyword */"
388 /* UART serial bus parity type */
390 const char *AcpiGbl_PtDecode[] =
397 "/* UNKNOWN parity keyword */",
398 "/* UNKNOWN parity keyword */",
399 "/* UNKNOWN parity keyword */"
406 * Base sizes of the raw AML resource descriptors, indexed by resource type.
407 * Zero indicates a reserved (and therefore invalid) resource type.
409 const UINT8 AcpiGbl_ResourceAmlSizes[] =
411 /* Small descriptors */
417 ACPI_AML_SIZE_SMALL (AML_RESOURCE_IRQ),
418 ACPI_AML_SIZE_SMALL (AML_RESOURCE_DMA),
419 ACPI_AML_SIZE_SMALL (AML_RESOURCE_START_DEPENDENT),
420 ACPI_AML_SIZE_SMALL (AML_RESOURCE_END_DEPENDENT),
421 ACPI_AML_SIZE_SMALL (AML_RESOURCE_IO),
422 ACPI_AML_SIZE_SMALL (AML_RESOURCE_FIXED_IO),
423 ACPI_AML_SIZE_SMALL (AML_RESOURCE_FIXED_DMA),
427 ACPI_AML_SIZE_SMALL (AML_RESOURCE_VENDOR_SMALL),
428 ACPI_AML_SIZE_SMALL (AML_RESOURCE_END_TAG),
430 /* Large descriptors */
433 ACPI_AML_SIZE_LARGE (AML_RESOURCE_MEMORY24),
434 ACPI_AML_SIZE_LARGE (AML_RESOURCE_GENERIC_REGISTER),
436 ACPI_AML_SIZE_LARGE (AML_RESOURCE_VENDOR_LARGE),
437 ACPI_AML_SIZE_LARGE (AML_RESOURCE_MEMORY32),
438 ACPI_AML_SIZE_LARGE (AML_RESOURCE_FIXED_MEMORY32),
439 ACPI_AML_SIZE_LARGE (AML_RESOURCE_ADDRESS32),
440 ACPI_AML_SIZE_LARGE (AML_RESOURCE_ADDRESS16),
441 ACPI_AML_SIZE_LARGE (AML_RESOURCE_EXTENDED_IRQ),
442 ACPI_AML_SIZE_LARGE (AML_RESOURCE_ADDRESS64),
443 ACPI_AML_SIZE_LARGE (AML_RESOURCE_EXTENDED_ADDRESS64),
444 ACPI_AML_SIZE_LARGE (AML_RESOURCE_GPIO),
446 ACPI_AML_SIZE_LARGE (AML_RESOURCE_COMMON_SERIALBUS),
449 const UINT8 AcpiGbl_ResourceAmlSerialBusSizes[] =
452 ACPI_AML_SIZE_LARGE (AML_RESOURCE_I2C_SERIALBUS),
453 ACPI_AML_SIZE_LARGE (AML_RESOURCE_SPI_SERIALBUS),
454 ACPI_AML_SIZE_LARGE (AML_RESOURCE_UART_SERIALBUS),
459 * Resource types, used to validate the resource length field.
460 * The length of fixed-length types must match exactly, variable
461 * lengths must meet the minimum required length, etc.
462 * Zero indicates a reserved (and therefore invalid) resource type.
464 static const UINT8 AcpiGbl_ResourceTypes[] =
466 /* Small descriptors */
472 ACPI_SMALL_VARIABLE_LENGTH, /* 04 IRQ */
473 ACPI_FIXED_LENGTH, /* 05 DMA */
474 ACPI_SMALL_VARIABLE_LENGTH, /* 06 StartDependentFunctions */
475 ACPI_FIXED_LENGTH, /* 07 EndDependentFunctions */
476 ACPI_FIXED_LENGTH, /* 08 IO */
477 ACPI_FIXED_LENGTH, /* 09 FixedIO */
478 ACPI_FIXED_LENGTH, /* 0A FixedDMA */
482 ACPI_VARIABLE_LENGTH, /* 0E VendorShort */
483 ACPI_FIXED_LENGTH, /* 0F EndTag */
485 /* Large descriptors */
488 ACPI_FIXED_LENGTH, /* 01 Memory24 */
489 ACPI_FIXED_LENGTH, /* 02 GenericRegister */
491 ACPI_VARIABLE_LENGTH, /* 04 VendorLong */
492 ACPI_FIXED_LENGTH, /* 05 Memory32 */
493 ACPI_FIXED_LENGTH, /* 06 Memory32Fixed */
494 ACPI_VARIABLE_LENGTH, /* 07 Dword* address */
495 ACPI_VARIABLE_LENGTH, /* 08 Word* address */
496 ACPI_VARIABLE_LENGTH, /* 09 ExtendedIRQ */
497 ACPI_VARIABLE_LENGTH, /* 0A Qword* address */
498 ACPI_FIXED_LENGTH, /* 0B Extended* address */
499 ACPI_VARIABLE_LENGTH, /* 0C Gpio* */
501 ACPI_VARIABLE_LENGTH /* 0E *SerialBus */
505 * For the iASL compiler/disassembler, we don't want any error messages
506 * because the disassembler uses the resource validation code to determine
507 * if Buffer objects are actually Resource Templates.
509 #ifdef ACPI_ASL_COMPILER
510 #define ACPI_RESOURCE_ERROR(plist)
512 #define ACPI_RESOURCE_ERROR(plist) ACPI_ERROR(plist)
516 /*******************************************************************************
518 * FUNCTION: AcpiUtWalkAmlResources
520 * PARAMETERS: Aml - Pointer to the raw AML resource template
521 * AmlLength - Length of the entire template
522 * UserFunction - Called once for each descriptor found. If
523 * NULL, a pointer to the EndTag is returned
524 * Context - Passed to UserFunction
528 * DESCRIPTION: Walk a raw AML resource list(buffer). User function called
529 * once for each resource found.
531 ******************************************************************************/
534 AcpiUtWalkAmlResources (
537 ACPI_WALK_AML_CALLBACK UserFunction,
545 UINT8 EndTag[2] = {0x79, 0x00};
548 ACPI_FUNCTION_TRACE (UtWalkAmlResources);
551 /* The absolute minimum resource template is one EndTag descriptor */
553 if (AmlLength < sizeof (AML_RESOURCE_END_TAG))
555 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
558 /* Point to the end of the resource template buffer */
560 EndAml = Aml + AmlLength;
562 /* Walk the byte list, abort on any invalid descriptor type or length */
566 /* Validate the Resource Type and Resource Length */
568 Status = AcpiUtValidateResource (Aml, &ResourceIndex);
569 if (ACPI_FAILURE (Status))
572 * Exit on failure. Cannot continue because the descriptor length
575 return_ACPI_STATUS (Status);
578 /* Get the length of this descriptor */
580 Length = AcpiUtGetDescriptorLength (Aml);
582 /* Invoke the user function */
586 Status = UserFunction (Aml, Length, Offset, ResourceIndex, Context);
587 if (ACPI_FAILURE (Status))
589 return_ACPI_STATUS (Status);
593 /* An EndTag descriptor terminates this resource template */
595 if (AcpiUtGetResourceType (Aml) == ACPI_RESOURCE_NAME_END_TAG)
598 * There must be at least one more byte in the buffer for
599 * the 2nd byte of the EndTag
601 if ((Aml + 1) >= EndAml)
603 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
606 /* Return the pointer to the EndTag if requested */
610 *(void **) Context = Aml;
615 return_ACPI_STATUS (AE_OK);
622 /* Did not find an EndTag descriptor */
626 /* Insert an EndTag anyway. AcpiRsGetListLength always leaves room */
628 (void) AcpiUtValidateResource (EndTag, &ResourceIndex);
629 Status = UserFunction (EndTag, 2, Offset, ResourceIndex, Context);
630 if (ACPI_FAILURE (Status))
632 return_ACPI_STATUS (Status);
636 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
640 /*******************************************************************************
642 * FUNCTION: AcpiUtValidateResource
644 * PARAMETERS: Aml - Pointer to the raw AML resource descriptor
645 * ReturnIndex - Where the resource index is returned. NULL
646 * if the index is not required.
648 * RETURN: Status, and optionally the Index into the global resource tables
650 * DESCRIPTION: Validate an AML resource descriptor by checking the Resource
651 * Type and Resource Length. Returns an index into the global
652 * resource information/dispatch tables for later use.
654 ******************************************************************************/
657 AcpiUtValidateResource (
661 AML_RESOURCE *AmlResource;
664 ACPI_RS_LENGTH ResourceLength;
665 ACPI_RS_LENGTH MinimumResourceLength;
668 ACPI_FUNCTION_ENTRY ();
672 * 1) Validate the ResourceType field (Byte 0)
674 ResourceType = ACPI_GET8 (Aml);
677 * Byte 0 contains the descriptor name (Resource Type)
678 * Examine the large/small bit in the resource header
680 if (ResourceType & ACPI_RESOURCE_NAME_LARGE)
682 /* Verify the large resource type (name) against the max */
684 if (ResourceType > ACPI_RESOURCE_NAME_LARGE_MAX)
686 goto InvalidResource;
690 * Large Resource Type -- bits 6:0 contain the name
691 * Translate range 0x80-0x8B to index range 0x10-0x1B
693 ResourceIndex = (UINT8) (ResourceType - 0x70);
698 * Small Resource Type -- bits 6:3 contain the name
699 * Shift range to index range 0x00-0x0F
701 ResourceIndex = (UINT8)
702 ((ResourceType & ACPI_RESOURCE_NAME_SMALL_MASK) >> 3);
706 * Check validity of the resource type, via AcpiGbl_ResourceTypes. Zero
707 * indicates an invalid resource.
709 if (!AcpiGbl_ResourceTypes[ResourceIndex])
711 goto InvalidResource;
715 * Validate the ResourceLength field. This ensures that the length
716 * is at least reasonable, and guarantees that it is non-zero.
718 ResourceLength = AcpiUtGetResourceLength (Aml);
719 MinimumResourceLength = AcpiGbl_ResourceAmlSizes[ResourceIndex];
721 /* Validate based upon the type of resource - fixed length or variable */
723 switch (AcpiGbl_ResourceTypes[ResourceIndex])
725 case ACPI_FIXED_LENGTH:
727 /* Fixed length resource, length must match exactly */
729 if (ResourceLength != MinimumResourceLength)
731 goto BadResourceLength;
735 case ACPI_VARIABLE_LENGTH:
737 /* Variable length resource, length must be at least the minimum */
739 if (ResourceLength < MinimumResourceLength)
741 goto BadResourceLength;
745 case ACPI_SMALL_VARIABLE_LENGTH:
747 /* Small variable length resource, length can be (Min) or (Min-1) */
749 if ((ResourceLength > MinimumResourceLength) ||
750 (ResourceLength < (MinimumResourceLength - 1)))
752 goto BadResourceLength;
758 /* Shouldn't happen (because of validation earlier), but be sure */
760 goto InvalidResource;
763 AmlResource = ACPI_CAST_PTR (AML_RESOURCE, Aml);
764 if (ResourceType == ACPI_RESOURCE_NAME_SERIAL_BUS)
766 /* Validate the BusType field */
768 if ((AmlResource->CommonSerialBus.Type == 0) ||
769 (AmlResource->CommonSerialBus.Type > AML_RESOURCE_MAX_SERIALBUSTYPE))
771 ACPI_RESOURCE_ERROR ((AE_INFO,
772 "Invalid/unsupported SerialBus resource descriptor: BusType 0x%2.2X",
773 AmlResource->CommonSerialBus.Type));
774 return (AE_AML_INVALID_RESOURCE_TYPE);
778 /* Optionally return the resource table index */
782 *ReturnIndex = ResourceIndex;
790 ACPI_RESOURCE_ERROR ((AE_INFO,
791 "Invalid/unsupported resource descriptor: Type 0x%2.2X",
793 return (AE_AML_INVALID_RESOURCE_TYPE);
797 ACPI_RESOURCE_ERROR ((AE_INFO,
798 "Invalid resource descriptor length: Type "
799 "0x%2.2X, Length 0x%4.4X, MinLength 0x%4.4X",
800 ResourceType, ResourceLength, MinimumResourceLength));
801 return (AE_AML_BAD_RESOURCE_LENGTH);
805 /*******************************************************************************
807 * FUNCTION: AcpiUtGetResourceType
809 * PARAMETERS: Aml - Pointer to the raw AML resource descriptor
811 * RETURN: The Resource Type with no extraneous bits (except the
812 * Large/Small descriptor bit -- this is left alone)
814 * DESCRIPTION: Extract the Resource Type/Name from the first byte of
815 * a resource descriptor.
817 ******************************************************************************/
820 AcpiUtGetResourceType (
823 ACPI_FUNCTION_ENTRY ();
827 * Byte 0 contains the descriptor name (Resource Type)
828 * Examine the large/small bit in the resource header
830 if (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_LARGE)
832 /* Large Resource Type -- bits 6:0 contain the name */
834 return (ACPI_GET8 (Aml));
838 /* Small Resource Type -- bits 6:3 contain the name */
840 return ((UINT8) (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_SMALL_MASK));
845 /*******************************************************************************
847 * FUNCTION: AcpiUtGetResourceLength
849 * PARAMETERS: Aml - Pointer to the raw AML resource descriptor
851 * RETURN: Byte Length
853 * DESCRIPTION: Get the "Resource Length" of a raw AML descriptor. By
854 * definition, this does not include the size of the descriptor
855 * header or the length field itself.
857 ******************************************************************************/
860 AcpiUtGetResourceLength (
863 ACPI_RS_LENGTH ResourceLength;
866 ACPI_FUNCTION_ENTRY ();
870 * Byte 0 contains the descriptor name (Resource Type)
871 * Examine the large/small bit in the resource header
873 if (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_LARGE)
875 /* Large Resource type -- bytes 1-2 contain the 16-bit length */
877 ACPI_MOVE_16_TO_16 (&ResourceLength, ACPI_ADD_PTR (UINT8, Aml, 1));
882 /* Small Resource type -- bits 2:0 of byte 0 contain the length */
884 ResourceLength = (UINT16) (ACPI_GET8 (Aml) &
885 ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK);
888 return (ResourceLength);
892 /*******************************************************************************
894 * FUNCTION: AcpiUtGetResourceHeaderLength
896 * PARAMETERS: Aml - Pointer to the raw AML resource descriptor
898 * RETURN: Length of the AML header (depends on large/small descriptor)
900 * DESCRIPTION: Get the length of the header for this resource.
902 ******************************************************************************/
905 AcpiUtGetResourceHeaderLength (
908 ACPI_FUNCTION_ENTRY ();
911 /* Examine the large/small bit in the resource header */
913 if (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_LARGE)
915 return (sizeof (AML_RESOURCE_LARGE_HEADER));
919 return (sizeof (AML_RESOURCE_SMALL_HEADER));
924 /*******************************************************************************
926 * FUNCTION: AcpiUtGetDescriptorLength
928 * PARAMETERS: Aml - Pointer to the raw AML resource descriptor
930 * RETURN: Byte length
932 * DESCRIPTION: Get the total byte length of a raw AML descriptor, including the
933 * length of the descriptor header and the length field itself.
934 * Used to walk descriptor lists.
936 ******************************************************************************/
939 AcpiUtGetDescriptorLength (
942 ACPI_FUNCTION_ENTRY ();
946 * Get the Resource Length (does not include header length) and add
947 * the header length (depends on if this is a small or large resource)
949 return (AcpiUtGetResourceLength (Aml) +
950 AcpiUtGetResourceHeaderLength (Aml));
954 /*******************************************************************************
956 * FUNCTION: AcpiUtGetResourceEndTag
958 * PARAMETERS: ObjDesc - The resource template buffer object
959 * EndTag - Where the pointer to the EndTag is returned
961 * RETURN: Status, pointer to the end tag
963 * DESCRIPTION: Find the EndTag resource descriptor in an AML resource template
964 * Note: allows a buffer length of zero.
966 ******************************************************************************/
969 AcpiUtGetResourceEndTag (
970 ACPI_OPERAND_OBJECT *ObjDesc,
976 ACPI_FUNCTION_TRACE (UtGetResourceEndTag);
979 /* Allow a buffer length of zero */
981 if (!ObjDesc->Buffer.Length)
983 *EndTag = ObjDesc->Buffer.Pointer;
984 return_ACPI_STATUS (AE_OK);
987 /* Validate the template and get a pointer to the EndTag */
989 Status = AcpiUtWalkAmlResources (ObjDesc->Buffer.Pointer,
990 ObjDesc->Buffer.Length, NULL, EndTag);
992 return_ACPI_STATUS (Status);