1 /*******************************************************************************
3 * Module Name: rsutils - Utilities for the resource manager
5 ******************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2014, 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 __RSUTILS_C__
120 #include "accommon.h"
121 #include "acnamesp.h"
125 #define _COMPONENT ACPI_RESOURCES
126 ACPI_MODULE_NAME ("rsutils")
129 /*******************************************************************************
131 * FUNCTION: AcpiRsDecodeBitmask
133 * PARAMETERS: Mask - Bitmask to decode
134 * List - Where the converted list is returned
136 * RETURN: Count of bits set (length of list)
138 * DESCRIPTION: Convert a bit mask into a list of values
140 ******************************************************************************/
143 AcpiRsDecodeBitmask (
151 ACPI_FUNCTION_ENTRY ();
154 /* Decode the mask bits */
156 for (i
= 0, BitCount
= 0; Mask
; i
++)
171 /*******************************************************************************
173 * FUNCTION: AcpiRsEncodeBitmask
175 * PARAMETERS: List - List of values to encode
176 * Count - Length of list
178 * RETURN: Encoded bitmask
180 * DESCRIPTION: Convert a list of values to an encoded bitmask
182 ******************************************************************************/
185 AcpiRsEncodeBitmask (
193 ACPI_FUNCTION_ENTRY ();
196 /* Encode the list into a single bitmask */
198 for (i
= 0, Mask
= 0; i
< Count
; i
++)
200 Mask
|= (0x1 << List
[i
]);
207 /*******************************************************************************
209 * FUNCTION: AcpiRsMoveData
211 * PARAMETERS: Destination - Pointer to the destination descriptor
212 * Source - Pointer to the source descriptor
213 * ItemCount - How many items to move
214 * MoveType - Byte width
218 * DESCRIPTION: Move multiple data items from one descriptor to another. Handles
219 * alignment issues and endian issues if necessary, as configured
220 * via the ACPI_MOVE_* macros. (This is why a memcpy is not used)
222 ******************************************************************************/
234 ACPI_FUNCTION_ENTRY ();
237 /* One move per item */
239 for (i
= 0; i
< ItemCount
; i
++)
244 * For the 8-bit case, we can perform the move all at once
245 * since there are no alignment or endian issues
248 case ACPI_RSC_MOVE_GPIO_RES
:
249 case ACPI_RSC_MOVE_SERIAL_VEN
:
250 case ACPI_RSC_MOVE_SERIAL_RES
:
252 ACPI_MEMCPY (Destination
, Source
, ItemCount
);
256 * 16-, 32-, and 64-bit cases must use the move macros that perform
257 * endian conversion and/or accommodate hardware that cannot perform
258 * misaligned memory transfers
260 case ACPI_RSC_MOVE16
:
261 case ACPI_RSC_MOVE_GPIO_PIN
:
263 ACPI_MOVE_16_TO_16 (&ACPI_CAST_PTR (UINT16
, Destination
)[i
],
264 &ACPI_CAST_PTR (UINT16
, Source
)[i
]);
267 case ACPI_RSC_MOVE32
:
269 ACPI_MOVE_32_TO_32 (&ACPI_CAST_PTR (UINT32
, Destination
)[i
],
270 &ACPI_CAST_PTR (UINT32
, Source
)[i
]);
273 case ACPI_RSC_MOVE64
:
275 ACPI_MOVE_64_TO_64 (&ACPI_CAST_PTR (UINT64
, Destination
)[i
],
276 &ACPI_CAST_PTR (UINT64
, Source
)[i
]);
287 /*******************************************************************************
289 * FUNCTION: AcpiRsSetResourceLength
291 * PARAMETERS: TotalLength - Length of the AML descriptor, including
292 * the header and length fields.
293 * Aml - Pointer to the raw AML descriptor
297 * DESCRIPTION: Set the ResourceLength field of an AML
298 * resource descriptor, both Large and Small descriptors are
299 * supported automatically. Note: Descriptor Type field must
302 ******************************************************************************/
305 AcpiRsSetResourceLength (
306 ACPI_RSDESC_SIZE TotalLength
,
309 ACPI_RS_LENGTH ResourceLength
;
312 ACPI_FUNCTION_ENTRY ();
315 /* Length is the total descriptor length minus the header length */
317 ResourceLength
= (ACPI_RS_LENGTH
)
318 (TotalLength
- AcpiUtGetResourceHeaderLength (Aml
));
320 /* Length is stored differently for large and small descriptors */
322 if (Aml
->SmallHeader
.DescriptorType
& ACPI_RESOURCE_NAME_LARGE
)
324 /* Large descriptor -- bytes 1-2 contain the 16-bit length */
326 ACPI_MOVE_16_TO_16 (&Aml
->LargeHeader
.ResourceLength
, &ResourceLength
);
330 /* Small descriptor -- bits 2:0 of byte 0 contain the length */
332 Aml
->SmallHeader
.DescriptorType
= (UINT8
)
334 /* Clear any existing length, preserving descriptor type bits */
336 ((Aml
->SmallHeader
.DescriptorType
& ~ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK
)
343 /*******************************************************************************
345 * FUNCTION: AcpiRsSetResourceHeader
347 * PARAMETERS: DescriptorType - Byte to be inserted as the type
348 * TotalLength - Length of the AML descriptor, including
349 * the header and length fields.
350 * Aml - Pointer to the raw AML descriptor
354 * DESCRIPTION: Set the DescriptorType and ResourceLength fields of an AML
355 * resource descriptor, both Large and Small descriptors are
356 * supported automatically
358 ******************************************************************************/
361 AcpiRsSetResourceHeader (
362 UINT8 DescriptorType
,
363 ACPI_RSDESC_SIZE TotalLength
,
366 ACPI_FUNCTION_ENTRY ();
369 /* Set the Resource Type */
371 Aml
->SmallHeader
.DescriptorType
= DescriptorType
;
373 /* Set the Resource Length */
375 AcpiRsSetResourceLength (TotalLength
, Aml
);
379 /*******************************************************************************
381 * FUNCTION: AcpiRsStrcpy
383 * PARAMETERS: Destination - Pointer to the destination string
384 * Source - Pointer to the source string
386 * RETURN: String length, including NULL terminator
388 * DESCRIPTION: Local string copy that returns the string length, saving a
389 * strcpy followed by a strlen.
391 ******************************************************************************/
401 ACPI_FUNCTION_ENTRY ();
404 for (i
= 0; Source
[i
]; i
++)
406 Destination
[i
] = Source
[i
];
411 /* Return string length including the NULL terminator */
413 return ((UINT16
) (i
+ 1));
417 /*******************************************************************************
419 * FUNCTION: AcpiRsGetResourceSource
421 * PARAMETERS: ResourceLength - Length field of the descriptor
422 * MinimumLength - Minimum length of the descriptor (minus
423 * any optional fields)
424 * ResourceSource - Where the ResourceSource is returned
425 * Aml - Pointer to the raw AML descriptor
426 * StringPtr - (optional) where to store the actual
427 * ResourceSource string
429 * RETURN: Length of the string plus NULL terminator, rounded up to native
432 * DESCRIPTION: Copy the optional ResourceSource data from a raw AML descriptor
433 * to an internal resource descriptor
435 ******************************************************************************/
438 AcpiRsGetResourceSource (
439 ACPI_RS_LENGTH ResourceLength
,
440 ACPI_RS_LENGTH MinimumLength
,
441 ACPI_RESOURCE_SOURCE
*ResourceSource
,
445 ACPI_RSDESC_SIZE TotalLength
;
446 UINT8
*AmlResourceSource
;
449 ACPI_FUNCTION_ENTRY ();
452 TotalLength
= ResourceLength
+ sizeof (AML_RESOURCE_LARGE_HEADER
);
453 AmlResourceSource
= ACPI_ADD_PTR (UINT8
, Aml
, MinimumLength
);
456 * ResourceSource is present if the length of the descriptor is longer than
457 * the minimum length.
459 * Note: Some resource descriptors will have an additional null, so
460 * we add 1 to the minimum length.
462 if (TotalLength
> (ACPI_RSDESC_SIZE
) (MinimumLength
+ 1))
464 /* Get the ResourceSourceIndex */
466 ResourceSource
->Index
= AmlResourceSource
[0];
468 ResourceSource
->StringPtr
= StringPtr
;
472 * String destination pointer is not specified; Set the String
473 * pointer to the end of the current ResourceSource structure.
475 ResourceSource
->StringPtr
= ACPI_ADD_PTR (char, ResourceSource
,
476 sizeof (ACPI_RESOURCE_SOURCE
));
480 * In order for the Resource length to be a multiple of the native
481 * word, calculate the length of the string (+1 for NULL terminator)
482 * and expand to the next word multiple.
484 * Zero the entire area of the buffer.
486 TotalLength
= (UINT32
) ACPI_STRLEN (
487 ACPI_CAST_PTR (char, &AmlResourceSource
[1])) + 1;
488 TotalLength
= (UINT32
) ACPI_ROUND_UP_TO_NATIVE_WORD (TotalLength
);
490 ACPI_MEMSET (ResourceSource
->StringPtr
, 0, TotalLength
);
492 /* Copy the ResourceSource string to the destination */
494 ResourceSource
->StringLength
= AcpiRsStrcpy (ResourceSource
->StringPtr
,
495 ACPI_CAST_PTR (char, &AmlResourceSource
[1]));
497 return ((ACPI_RS_LENGTH
) TotalLength
);
500 /* ResourceSource is not present */
502 ResourceSource
->Index
= 0;
503 ResourceSource
->StringLength
= 0;
504 ResourceSource
->StringPtr
= NULL
;
509 /*******************************************************************************
511 * FUNCTION: AcpiRsSetResourceSource
513 * PARAMETERS: Aml - Pointer to the raw AML descriptor
514 * MinimumLength - Minimum length of the descriptor (minus
515 * any optional fields)
516 * ResourceSource - Internal ResourceSource
519 * RETURN: Total length of the AML descriptor
521 * DESCRIPTION: Convert an optional ResourceSource from internal format to a
522 * raw AML resource descriptor
524 ******************************************************************************/
527 AcpiRsSetResourceSource (
529 ACPI_RS_LENGTH MinimumLength
,
530 ACPI_RESOURCE_SOURCE
*ResourceSource
)
532 UINT8
*AmlResourceSource
;
533 ACPI_RSDESC_SIZE DescriptorLength
;
536 ACPI_FUNCTION_ENTRY ();
539 DescriptorLength
= MinimumLength
;
541 /* Non-zero string length indicates presence of a ResourceSource */
543 if (ResourceSource
->StringLength
)
545 /* Point to the end of the AML descriptor */
547 AmlResourceSource
= ACPI_ADD_PTR (UINT8
, Aml
, MinimumLength
);
549 /* Copy the ResourceSourceIndex */
551 AmlResourceSource
[0] = (UINT8
) ResourceSource
->Index
;
553 /* Copy the ResourceSource string */
555 ACPI_STRCPY (ACPI_CAST_PTR (char, &AmlResourceSource
[1]),
556 ResourceSource
->StringPtr
);
559 * Add the length of the string (+ 1 for null terminator) to the
560 * final descriptor length
562 DescriptorLength
+= ((ACPI_RSDESC_SIZE
) ResourceSource
->StringLength
+ 1);
565 /* Return the new total length of the AML descriptor */
567 return (DescriptorLength
);
571 /*******************************************************************************
573 * FUNCTION: AcpiRsGetPrtMethodData
575 * PARAMETERS: Node - Device node
576 * RetBuffer - Pointer to a buffer structure for the
581 * DESCRIPTION: This function is called to get the _PRT value of an object
582 * contained in an object specified by the handle passed in
584 * If the function fails an appropriate status will be returned
585 * and the contents of the callers buffer is undefined.
587 ******************************************************************************/
590 AcpiRsGetPrtMethodData (
591 ACPI_NAMESPACE_NODE
*Node
,
592 ACPI_BUFFER
*RetBuffer
)
594 ACPI_OPERAND_OBJECT
*ObjDesc
;
598 ACPI_FUNCTION_TRACE (RsGetPrtMethodData
);
601 /* Parameters guaranteed valid by caller */
603 /* Execute the method, no parameters */
605 Status
= AcpiUtEvaluateObject (Node
, METHOD_NAME__PRT
,
606 ACPI_BTYPE_PACKAGE
, &ObjDesc
);
607 if (ACPI_FAILURE (Status
))
609 return_ACPI_STATUS (Status
);
613 * Create a resource linked list from the byte stream buffer that comes
614 * back from the _CRS method execution.
616 Status
= AcpiRsCreatePciRoutingTable (ObjDesc
, RetBuffer
);
618 /* On exit, we must delete the object returned by EvaluateObject */
620 AcpiUtRemoveReference (ObjDesc
);
621 return_ACPI_STATUS (Status
);
625 /*******************************************************************************
627 * FUNCTION: AcpiRsGetCrsMethodData
629 * PARAMETERS: Node - Device node
630 * RetBuffer - Pointer to a buffer structure for the
635 * DESCRIPTION: This function is called to get the _CRS value of an object
636 * contained in an object specified by the handle passed in
638 * If the function fails an appropriate status will be returned
639 * and the contents of the callers buffer is undefined.
641 ******************************************************************************/
644 AcpiRsGetCrsMethodData (
645 ACPI_NAMESPACE_NODE
*Node
,
646 ACPI_BUFFER
*RetBuffer
)
648 ACPI_OPERAND_OBJECT
*ObjDesc
;
652 ACPI_FUNCTION_TRACE (RsGetCrsMethodData
);
655 /* Parameters guaranteed valid by caller */
657 /* Execute the method, no parameters */
659 Status
= AcpiUtEvaluateObject (Node
, METHOD_NAME__CRS
,
660 ACPI_BTYPE_BUFFER
, &ObjDesc
);
661 if (ACPI_FAILURE (Status
))
663 return_ACPI_STATUS (Status
);
667 * Make the call to create a resource linked list from the
668 * byte stream buffer that comes back from the _CRS method
671 Status
= AcpiRsCreateResourceList (ObjDesc
, RetBuffer
);
673 /* On exit, we must delete the object returned by evaluateObject */
675 AcpiUtRemoveReference (ObjDesc
);
676 return_ACPI_STATUS (Status
);
680 /*******************************************************************************
682 * FUNCTION: AcpiRsGetPrsMethodData
684 * PARAMETERS: Node - Device node
685 * RetBuffer - Pointer to a buffer structure for the
690 * DESCRIPTION: This function is called to get the _PRS value of an object
691 * contained in an object specified by the handle passed in
693 * If the function fails an appropriate status will be returned
694 * and the contents of the callers buffer is undefined.
696 ******************************************************************************/
699 AcpiRsGetPrsMethodData (
700 ACPI_NAMESPACE_NODE
*Node
,
701 ACPI_BUFFER
*RetBuffer
)
703 ACPI_OPERAND_OBJECT
*ObjDesc
;
707 ACPI_FUNCTION_TRACE (RsGetPrsMethodData
);
710 /* Parameters guaranteed valid by caller */
712 /* Execute the method, no parameters */
714 Status
= AcpiUtEvaluateObject (Node
, METHOD_NAME__PRS
,
715 ACPI_BTYPE_BUFFER
, &ObjDesc
);
716 if (ACPI_FAILURE (Status
))
718 return_ACPI_STATUS (Status
);
722 * Make the call to create a resource linked list from the
723 * byte stream buffer that comes back from the _CRS method
726 Status
= AcpiRsCreateResourceList (ObjDesc
, RetBuffer
);
728 /* On exit, we must delete the object returned by evaluateObject */
730 AcpiUtRemoveReference (ObjDesc
);
731 return_ACPI_STATUS (Status
);
735 /*******************************************************************************
737 * FUNCTION: AcpiRsGetAeiMethodData
739 * PARAMETERS: Node - Device node
740 * RetBuffer - Pointer to a buffer structure for the
745 * DESCRIPTION: This function is called to get the _AEI value of an object
746 * contained in an object specified by the handle passed in
748 * If the function fails an appropriate status will be returned
749 * and the contents of the callers buffer is undefined.
751 ******************************************************************************/
754 AcpiRsGetAeiMethodData (
755 ACPI_NAMESPACE_NODE
*Node
,
756 ACPI_BUFFER
*RetBuffer
)
758 ACPI_OPERAND_OBJECT
*ObjDesc
;
762 ACPI_FUNCTION_TRACE (RsGetAeiMethodData
);
765 /* Parameters guaranteed valid by caller */
767 /* Execute the method, no parameters */
769 Status
= AcpiUtEvaluateObject (Node
, METHOD_NAME__AEI
,
770 ACPI_BTYPE_BUFFER
, &ObjDesc
);
771 if (ACPI_FAILURE (Status
))
773 return_ACPI_STATUS (Status
);
777 * Make the call to create a resource linked list from the
778 * byte stream buffer that comes back from the _CRS method
781 Status
= AcpiRsCreateResourceList (ObjDesc
, RetBuffer
);
783 /* On exit, we must delete the object returned by evaluateObject */
785 AcpiUtRemoveReference (ObjDesc
);
786 return_ACPI_STATUS (Status
);
790 /*******************************************************************************
792 * FUNCTION: AcpiRsGetMethodData
794 * PARAMETERS: Handle - Handle to the containing object
795 * Path - Path to method, relative to Handle
796 * RetBuffer - Pointer to a buffer structure for the
801 * DESCRIPTION: This function is called to get the _CRS or _PRS value of an
802 * object contained in an object specified by the handle passed in
804 * If the function fails an appropriate status will be returned
805 * and the contents of the callers buffer is undefined.
807 ******************************************************************************/
810 AcpiRsGetMethodData (
813 ACPI_BUFFER
*RetBuffer
)
815 ACPI_OPERAND_OBJECT
*ObjDesc
;
819 ACPI_FUNCTION_TRACE (RsGetMethodData
);
822 /* Parameters guaranteed valid by caller */
824 /* Execute the method, no parameters */
826 Status
= AcpiUtEvaluateObject (ACPI_CAST_PTR (ACPI_NAMESPACE_NODE
, Handle
),
827 Path
, ACPI_BTYPE_BUFFER
, &ObjDesc
);
828 if (ACPI_FAILURE (Status
))
830 return_ACPI_STATUS (Status
);
834 * Make the call to create a resource linked list from the
835 * byte stream buffer that comes back from the method
838 Status
= AcpiRsCreateResourceList (ObjDesc
, RetBuffer
);
840 /* On exit, we must delete the object returned by EvaluateObject */
842 AcpiUtRemoveReference (ObjDesc
);
843 return_ACPI_STATUS (Status
);
847 /*******************************************************************************
849 * FUNCTION: AcpiRsSetSrsMethodData
851 * PARAMETERS: Node - Device node
852 * InBuffer - Pointer to a buffer structure of the
857 * DESCRIPTION: This function is called to set the _SRS of an object contained
858 * in an object specified by the handle passed in
860 * If the function fails an appropriate status will be returned
861 * and the contents of the callers buffer is undefined.
863 * Note: Parameters guaranteed valid by caller
865 ******************************************************************************/
868 AcpiRsSetSrsMethodData (
869 ACPI_NAMESPACE_NODE
*Node
,
870 ACPI_BUFFER
*InBuffer
)
872 ACPI_EVALUATE_INFO
*Info
;
873 ACPI_OPERAND_OBJECT
*Args
[2];
878 ACPI_FUNCTION_TRACE (RsSetSrsMethodData
);
881 /* Allocate and initialize the evaluation information block */
883 Info
= ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO
));
886 return_ACPI_STATUS (AE_NO_MEMORY
);
889 Info
->PrefixNode
= Node
;
890 Info
->RelativePathname
= METHOD_NAME__SRS
;
891 Info
->Parameters
= Args
;
892 Info
->Flags
= ACPI_IGNORE_RETURN_VALUE
;
895 * The InBuffer parameter will point to a linked list of
896 * resource parameters. It needs to be formatted into a
897 * byte stream to be sent in as an input parameter to _SRS
899 * Convert the linked list into a byte stream
901 Buffer
.Length
= ACPI_ALLOCATE_LOCAL_BUFFER
;
902 Status
= AcpiRsCreateAmlResources (InBuffer
, &Buffer
);
903 if (ACPI_FAILURE (Status
))
908 /* Create and initialize the method parameter object */
910 Args
[0] = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER
);
914 * Must free the buffer allocated above (otherwise it is freed
917 ACPI_FREE (Buffer
.Pointer
);
918 Status
= AE_NO_MEMORY
;
922 Args
[0]->Buffer
.Length
= (UINT32
) Buffer
.Length
;
923 Args
[0]->Buffer
.Pointer
= Buffer
.Pointer
;
924 Args
[0]->Common
.Flags
= AOPOBJ_DATA_VALID
;
927 /* Execute the method, no return value is expected */
929 Status
= AcpiNsEvaluate (Info
);
931 /* Clean up and return the status from AcpiNsEvaluate */
933 AcpiUtRemoveReference (Args
[0]);
937 return_ACPI_STATUS (Status
);