| 0,0 → 1,874 |
|---|
| /******************************************************************************* |
| * |
| * Module Name: rsutils - Utilities for the resource manager |
| * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
| * All rights reserved. |
| * |
| * 2. License |
| * |
| * 2.1. This is your license from Intel Corp. under its intellectual property |
| * rights. You may have additional license terms from the party that provided |
| * you this software, covering your right to use that party's intellectual |
| * property rights. |
| * |
| * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
| * copy of the source code appearing in this file ("Covered Code") an |
| * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
| * base code distributed originally by Intel ("Original Intel Code") to copy, |
| * make derivatives, distribute, use and display any portion of the Covered |
| * Code in any form, with the right to sublicense such rights; and |
| * |
| * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
| * license (with the right to sublicense), under only those claims of Intel |
| * patents that are infringed by the Original Intel Code, to make, use, sell, |
| * offer to sell, and import the Covered Code and derivative works thereof |
| * solely to the minimum extent necessary to exercise the above copyright |
| * license, and in no event shall the patent license extend to any additions |
| * to or modifications of the Original Intel Code. No other license or right |
| * is granted directly or by implication, estoppel or otherwise; |
| * |
| * The above copyright and patent license is granted only if the following |
| * conditions are met: |
| * |
| * 3. Conditions |
| * |
| * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification with rights to further distribute source must include |
| * the above Copyright Notice, the above License, this list of Conditions, |
| * and the following Disclaimer and Export Compliance provision. In addition, |
| * Licensee must cause all Covered Code to which Licensee contributes to |
| * contain a file documenting the changes Licensee made to create that Covered |
| * Code and the date of any change. Licensee must include in that file the |
| * documentation of any changes made by any predecessor Licensee. Licensee |
| * must include a prominent statement that the modification is derived, |
| * directly or indirectly, from Original Intel Code. |
| * |
| * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification without rights to further distribute source must |
| * include the following Disclaimer and Export Compliance provision in the |
| * documentation and/or other materials provided with distribution. In |
| * addition, Licensee may not authorize further sublicense of source of any |
| * portion of the Covered Code, and must include terms to the effect that the |
| * license from Licensee to its licensee is limited to the intellectual |
| * property embodied in the software Licensee provides to its licensee, and |
| * not to intellectual property embodied in modifications its licensee may |
| * make. |
| * |
| * 3.3. Redistribution of Executable. Redistribution in executable form of any |
| * substantial portion of the Covered Code or modification must reproduce the |
| * above Copyright Notice, and the following Disclaimer and Export Compliance |
| * provision in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3.4. Intel retains all right, title, and interest in and to the Original |
| * Intel Code. |
| * |
| * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
| * Intel shall be used in advertising or otherwise to promote the sale, use or |
| * other dealings in products derived from or relating to the Covered Code |
| * without prior written authorization from Intel. |
| * |
| * 4. Disclaimer and Export Compliance |
| * |
| * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
| * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
| * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
| * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
| * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
| * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
| * PARTICULAR PURPOSE. |
| * |
| * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
| * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
| * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
| * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
| * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
| * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
| * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
| * LIMITED REMEDY. |
| * |
| * 4.3. Licensee shall not export, either directly or indirectly, any of this |
| * software or system incorporating such software without first obtaining any |
| * required license or other approval from the U. S. Department of Commerce or |
| * any other agency or department of the United States Government. In the |
| * event Licensee exports any such software from the United States or |
| * re-exports any such software from a foreign destination, Licensee shall |
| * ensure that the distribution and export/re-export of the software is in |
| * compliance with all laws, regulations, orders, or other restrictions of the |
| * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
| * any of its subsidiaries will export/re-export any technical data, process, |
| * software, or service, directly or indirectly, to any country for which the |
| * United States government or any agency thereof requires an export license, |
| * other governmental approval, or letter of assurance, without first obtaining |
| * such license, approval or letter. |
| * |
| *****************************************************************************/ |
| |
| |
| #define __RSUTILS_C__ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acnamesp.h" |
| #include "acresrc.h" |
| |
| |
| #define _COMPONENT ACPI_RESOURCES |
| ACPI_MODULE_NAME ("rsutils") |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsDecodeBitmask |
| * |
| * PARAMETERS: Mask - Bitmask to decode |
| * List - Where the converted list is returned |
| * |
| * RETURN: Count of bits set (length of list) |
| * |
| * DESCRIPTION: Convert a bit mask into a list of values |
| * |
| ******************************************************************************/ |
| |
| UINT8 |
| AcpiRsDecodeBitmask ( |
| UINT16 Mask, |
| UINT8 *List) |
| { |
| UINT8 i; |
| UINT8 BitCount; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| /* Decode the mask bits */ |
| |
| for (i = 0, BitCount = 0; Mask; i++) |
| { |
| if (Mask & 0x0001) |
| { |
| List[BitCount] = i; |
| BitCount++; |
| } |
| |
| Mask >>= 1; |
| } |
| |
| return (BitCount); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsEncodeBitmask |
| * |
| * PARAMETERS: List - List of values to encode |
| * Count - Length of list |
| * |
| * RETURN: Encoded bitmask |
| * |
| * DESCRIPTION: Convert a list of values to an encoded bitmask |
| * |
| ******************************************************************************/ |
| |
| UINT16 |
| AcpiRsEncodeBitmask ( |
| UINT8 *List, |
| UINT8 Count) |
| { |
| UINT32 i; |
| UINT16 Mask; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| /* Encode the list into a single bitmask */ |
| |
| for (i = 0, Mask = 0; i < Count; i++) |
| { |
| Mask |= (0x1 << List[i]); |
| } |
| |
| return (Mask); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsMoveData |
| * |
| * PARAMETERS: Destination - Pointer to the destination descriptor |
| * Source - Pointer to the source descriptor |
| * ItemCount - How many items to move |
| * MoveType - Byte width |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Move multiple data items from one descriptor to another. Handles |
| * alignment issues and endian issues if necessary, as configured |
| * via the ACPI_MOVE_* macros. (This is why a memcpy is not used) |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiRsMoveData ( |
| void *Destination, |
| void *Source, |
| UINT16 ItemCount, |
| UINT8 MoveType) |
| { |
| UINT32 i; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| /* One move per item */ |
| |
| for (i = 0; i < ItemCount; i++) |
| { |
| switch (MoveType) |
| { |
| /* |
| * For the 8-bit case, we can perform the move all at once |
| * since there are no alignment or endian issues |
| */ |
| case ACPI_RSC_MOVE8: |
| ACPI_MEMCPY (Destination, Source, ItemCount); |
| return; |
| |
| /* |
| * 16-, 32-, and 64-bit cases must use the move macros that perform |
| * endian conversion and/or accomodate hardware that cannot perform |
| * misaligned memory transfers |
| */ |
| case ACPI_RSC_MOVE16: |
| ACPI_MOVE_16_TO_16 (&ACPI_CAST_PTR (UINT16, Destination)[i], |
| &ACPI_CAST_PTR (UINT16, Source)[i]); |
| break; |
| |
| case ACPI_RSC_MOVE32: |
| ACPI_MOVE_32_TO_32 (&ACPI_CAST_PTR (UINT32, Destination)[i], |
| &ACPI_CAST_PTR (UINT32, Source)[i]); |
| break; |
| |
| case ACPI_RSC_MOVE64: |
| ACPI_MOVE_64_TO_64 (&ACPI_CAST_PTR (UINT64, Destination)[i], |
| &ACPI_CAST_PTR (UINT64, Source)[i]); |
| break; |
| |
| default: |
| return; |
| } |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsSetResourceLength |
| * |
| * PARAMETERS: TotalLength - Length of the AML descriptor, including |
| * the header and length fields. |
| * Aml - Pointer to the raw AML descriptor |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Set the ResourceLength field of an AML |
| * resource descriptor, both Large and Small descriptors are |
| * supported automatically. Note: Descriptor Type field must |
| * be valid. |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiRsSetResourceLength ( |
| ACPI_RSDESC_SIZE TotalLength, |
| AML_RESOURCE *Aml) |
| { |
| ACPI_RS_LENGTH ResourceLength; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| /* Length is the total descriptor length minus the header length */ |
| |
| ResourceLength = (ACPI_RS_LENGTH) |
| (TotalLength - AcpiUtGetResourceHeaderLength (Aml)); |
| |
| /* Length is stored differently for large and small descriptors */ |
| |
| if (Aml->SmallHeader.DescriptorType & ACPI_RESOURCE_NAME_LARGE) |
| { |
| /* Large descriptor -- bytes 1-2 contain the 16-bit length */ |
| |
| ACPI_MOVE_16_TO_16 (&Aml->LargeHeader.ResourceLength, &ResourceLength); |
| } |
| else |
| { |
| /* Small descriptor -- bits 2:0 of byte 0 contain the length */ |
| |
| Aml->SmallHeader.DescriptorType = (UINT8) |
| |
| /* Clear any existing length, preserving descriptor type bits */ |
| |
| ((Aml->SmallHeader.DescriptorType & ~ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK) |
| |
| | ResourceLength); |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsSetResourceHeader |
| * |
| * PARAMETERS: DescriptorType - Byte to be inserted as the type |
| * TotalLength - Length of the AML descriptor, including |
| * the header and length fields. |
| * Aml - Pointer to the raw AML descriptor |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Set the DescriptorType and ResourceLength fields of an AML |
| * resource descriptor, both Large and Small descriptors are |
| * supported automatically |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiRsSetResourceHeader ( |
| UINT8 DescriptorType, |
| ACPI_RSDESC_SIZE TotalLength, |
| AML_RESOURCE *Aml) |
| { |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| /* Set the Resource Type */ |
| |
| Aml->SmallHeader.DescriptorType = DescriptorType; |
| |
| /* Set the Resource Length */ |
| |
| AcpiRsSetResourceLength (TotalLength, Aml); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsStrcpy |
| * |
| * PARAMETERS: Destination - Pointer to the destination string |
| * Source - Pointer to the source string |
| * |
| * RETURN: String length, including NULL terminator |
| * |
| * DESCRIPTION: Local string copy that returns the string length, saving a |
| * strcpy followed by a strlen. |
| * |
| ******************************************************************************/ |
| |
| static UINT16 |
| AcpiRsStrcpy ( |
| char *Destination, |
| char *Source) |
| { |
| UINT16 i; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| for (i = 0; Source[i]; i++) |
| { |
| Destination[i] = Source[i]; |
| } |
| |
| Destination[i] = 0; |
| |
| /* Return string length including the NULL terminator */ |
| |
| return ((UINT16) (i + 1)); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsGetResourceSource |
| * |
| * PARAMETERS: ResourceLength - Length field of the descriptor |
| * MinimumLength - Minimum length of the descriptor (minus |
| * any optional fields) |
| * ResourceSource - Where the ResourceSource is returned |
| * Aml - Pointer to the raw AML descriptor |
| * StringPtr - (optional) where to store the actual |
| * ResourceSource string |
| * |
| * RETURN: Length of the string plus NULL terminator, rounded up to native |
| * word boundary |
| * |
| * DESCRIPTION: Copy the optional ResourceSource data from a raw AML descriptor |
| * to an internal resource descriptor |
| * |
| ******************************************************************************/ |
| |
| ACPI_RS_LENGTH |
| AcpiRsGetResourceSource ( |
| ACPI_RS_LENGTH ResourceLength, |
| ACPI_RS_LENGTH MinimumLength, |
| ACPI_RESOURCE_SOURCE *ResourceSource, |
| AML_RESOURCE *Aml, |
| char *StringPtr) |
| { |
| ACPI_RSDESC_SIZE TotalLength; |
| UINT8 *AmlResourceSource; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| TotalLength = ResourceLength + sizeof (AML_RESOURCE_LARGE_HEADER); |
| AmlResourceSource = ACPI_ADD_PTR (UINT8, Aml, MinimumLength); |
| |
| /* |
| * ResourceSource is present if the length of the descriptor is longer than |
| * the minimum length. |
| * |
| * Note: Some resource descriptors will have an additional null, so |
| * we add 1 to the minimum length. |
| */ |
| if (TotalLength > (ACPI_RSDESC_SIZE) (MinimumLength + 1)) |
| { |
| /* Get the ResourceSourceIndex */ |
| |
| ResourceSource->Index = AmlResourceSource[0]; |
| |
| ResourceSource->StringPtr = StringPtr; |
| if (!StringPtr) |
| { |
| /* |
| * String destination pointer is not specified; Set the String |
| * pointer to the end of the current ResourceSource structure. |
| */ |
| ResourceSource->StringPtr = ACPI_ADD_PTR (char, ResourceSource, |
| sizeof (ACPI_RESOURCE_SOURCE)); |
| } |
| |
| /* |
| * In order for the Resource length to be a multiple of the native |
| * word, calculate the length of the string (+1 for NULL terminator) |
| * and expand to the next word multiple. |
| * |
| * Zero the entire area of the buffer. |
| */ |
| TotalLength = (UINT32) ACPI_STRLEN ( |
| ACPI_CAST_PTR (char, &AmlResourceSource[1])) + 1; |
| TotalLength = (UINT32) ACPI_ROUND_UP_TO_NATIVE_WORD (TotalLength); |
| |
| ACPI_MEMSET (ResourceSource->StringPtr, 0, TotalLength); |
| |
| /* Copy the ResourceSource string to the destination */ |
| |
| ResourceSource->StringLength = AcpiRsStrcpy (ResourceSource->StringPtr, |
| ACPI_CAST_PTR (char, &AmlResourceSource[1])); |
| |
| return ((ACPI_RS_LENGTH) TotalLength); |
| } |
| |
| /* ResourceSource is not present */ |
| |
| ResourceSource->Index = 0; |
| ResourceSource->StringLength = 0; |
| ResourceSource->StringPtr = NULL; |
| return (0); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsSetResourceSource |
| * |
| * PARAMETERS: Aml - Pointer to the raw AML descriptor |
| * MinimumLength - Minimum length of the descriptor (minus |
| * any optional fields) |
| * ResourceSource - Internal ResourceSource |
| |
| * |
| * RETURN: Total length of the AML descriptor |
| * |
| * DESCRIPTION: Convert an optional ResourceSource from internal format to a |
| * raw AML resource descriptor |
| * |
| ******************************************************************************/ |
| |
| ACPI_RSDESC_SIZE |
| AcpiRsSetResourceSource ( |
| AML_RESOURCE *Aml, |
| ACPI_RS_LENGTH MinimumLength, |
| ACPI_RESOURCE_SOURCE *ResourceSource) |
| { |
| UINT8 *AmlResourceSource; |
| ACPI_RSDESC_SIZE DescriptorLength; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| DescriptorLength = MinimumLength; |
| |
| /* Non-zero string length indicates presence of a ResourceSource */ |
| |
| if (ResourceSource->StringLength) |
| { |
| /* Point to the end of the AML descriptor */ |
| |
| AmlResourceSource = ACPI_ADD_PTR (UINT8, Aml, MinimumLength); |
| |
| /* Copy the ResourceSourceIndex */ |
| |
| AmlResourceSource[0] = (UINT8) ResourceSource->Index; |
| |
| /* Copy the ResourceSource string */ |
| |
| ACPI_STRCPY (ACPI_CAST_PTR (char, &AmlResourceSource[1]), |
| ResourceSource->StringPtr); |
| |
| /* |
| * Add the length of the string (+ 1 for null terminator) to the |
| * final descriptor length |
| */ |
| DescriptorLength += ((ACPI_RSDESC_SIZE) ResourceSource->StringLength + 1); |
| } |
| |
| /* Return the new total length of the AML descriptor */ |
| |
| return (DescriptorLength); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsGetPrtMethodData |
| * |
| * PARAMETERS: Node - Device node |
| * RetBuffer - Pointer to a buffer structure for the |
| * results |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to get the _PRT value of an object |
| * contained in an object specified by the handle passed in |
| * |
| * If the function fails an appropriate status will be returned |
| * and the contents of the callers buffer is undefined. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiRsGetPrtMethodData ( |
| ACPI_NAMESPACE_NODE *Node, |
| ACPI_BUFFER *RetBuffer) |
| { |
| ACPI_OPERAND_OBJECT *ObjDesc; |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (RsGetPrtMethodData); |
| |
| |
| /* Parameters guaranteed valid by caller */ |
| |
| /* Execute the method, no parameters */ |
| |
| Status = AcpiUtEvaluateObject (Node, METHOD_NAME__PRT, |
| ACPI_BTYPE_PACKAGE, &ObjDesc); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* |
| * Create a resource linked list from the byte stream buffer that comes |
| * back from the _CRS method execution. |
| */ |
| Status = AcpiRsCreatePciRoutingTable (ObjDesc, RetBuffer); |
| |
| /* On exit, we must delete the object returned by EvaluateObject */ |
| |
| AcpiUtRemoveReference (ObjDesc); |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsGetCrsMethodData |
| * |
| * PARAMETERS: Node - Device node |
| * RetBuffer - Pointer to a buffer structure for the |
| * results |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to get the _CRS value of an object |
| * contained in an object specified by the handle passed in |
| * |
| * If the function fails an appropriate status will be returned |
| * and the contents of the callers buffer is undefined. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiRsGetCrsMethodData ( |
| ACPI_NAMESPACE_NODE *Node, |
| ACPI_BUFFER *RetBuffer) |
| { |
| ACPI_OPERAND_OBJECT *ObjDesc; |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (RsGetCrsMethodData); |
| |
| |
| /* Parameters guaranteed valid by caller */ |
| |
| /* Execute the method, no parameters */ |
| |
| Status = AcpiUtEvaluateObject (Node, METHOD_NAME__CRS, |
| ACPI_BTYPE_BUFFER, &ObjDesc); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* |
| * Make the call to create a resource linked list from the |
| * byte stream buffer that comes back from the _CRS method |
| * execution. |
| */ |
| Status = AcpiRsCreateResourceList (ObjDesc, RetBuffer); |
| |
| /* On exit, we must delete the object returned by evaluateObject */ |
| |
| AcpiUtRemoveReference (ObjDesc); |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsGetPrsMethodData |
| * |
| * PARAMETERS: Node - Device node |
| * RetBuffer - Pointer to a buffer structure for the |
| * results |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to get the _PRS value of an object |
| * contained in an object specified by the handle passed in |
| * |
| * If the function fails an appropriate status will be returned |
| * and the contents of the callers buffer is undefined. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiRsGetPrsMethodData ( |
| ACPI_NAMESPACE_NODE *Node, |
| ACPI_BUFFER *RetBuffer) |
| { |
| ACPI_OPERAND_OBJECT *ObjDesc; |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (RsGetPrsMethodData); |
| |
| |
| /* Parameters guaranteed valid by caller */ |
| |
| /* Execute the method, no parameters */ |
| |
| Status = AcpiUtEvaluateObject (Node, METHOD_NAME__PRS, |
| ACPI_BTYPE_BUFFER, &ObjDesc); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* |
| * Make the call to create a resource linked list from the |
| * byte stream buffer that comes back from the _CRS method |
| * execution. |
| */ |
| Status = AcpiRsCreateResourceList (ObjDesc, RetBuffer); |
| |
| /* On exit, we must delete the object returned by evaluateObject */ |
| |
| AcpiUtRemoveReference (ObjDesc); |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsGetMethodData |
| * |
| * PARAMETERS: Handle - Handle to the containing object |
| * Path - Path to method, relative to Handle |
| * RetBuffer - Pointer to a buffer structure for the |
| * results |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to get the _CRS or _PRS value of an |
| * object contained in an object specified by the handle passed in |
| * |
| * If the function fails an appropriate status will be returned |
| * and the contents of the callers buffer is undefined. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiRsGetMethodData ( |
| ACPI_HANDLE Handle, |
| char *Path, |
| ACPI_BUFFER *RetBuffer) |
| { |
| ACPI_OPERAND_OBJECT *ObjDesc; |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (RsGetMethodData); |
| |
| |
| /* Parameters guaranteed valid by caller */ |
| |
| /* Execute the method, no parameters */ |
| |
| Status = AcpiUtEvaluateObject (Handle, Path, ACPI_BTYPE_BUFFER, &ObjDesc); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* |
| * Make the call to create a resource linked list from the |
| * byte stream buffer that comes back from the method |
| * execution. |
| */ |
| Status = AcpiRsCreateResourceList (ObjDesc, RetBuffer); |
| |
| /* On exit, we must delete the object returned by EvaluateObject */ |
| |
| AcpiUtRemoveReference (ObjDesc); |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsSetSrsMethodData |
| * |
| * PARAMETERS: Node - Device node |
| * InBuffer - Pointer to a buffer structure of the |
| * parameter |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to set the _SRS of an object contained |
| * in an object specified by the handle passed in |
| * |
| * If the function fails an appropriate status will be returned |
| * and the contents of the callers buffer is undefined. |
| * |
| * Note: Parameters guaranteed valid by caller |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiRsSetSrsMethodData ( |
| ACPI_NAMESPACE_NODE *Node, |
| ACPI_BUFFER *InBuffer) |
| { |
| ACPI_EVALUATE_INFO *Info; |
| ACPI_OPERAND_OBJECT *Args[2]; |
| ACPI_STATUS Status; |
| ACPI_BUFFER Buffer; |
| |
| |
| ACPI_FUNCTION_TRACE (RsSetSrsMethodData); |
| |
| |
| /* Allocate and initialize the evaluation information block */ |
| |
| Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); |
| if (!Info) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| Info->PrefixNode = Node; |
| Info->Pathname = METHOD_NAME__SRS; |
| Info->Parameters = Args; |
| Info->Flags = ACPI_IGNORE_RETURN_VALUE; |
| |
| /* |
| * The InBuffer parameter will point to a linked list of |
| * resource parameters. It needs to be formatted into a |
| * byte stream to be sent in as an input parameter to _SRS |
| * |
| * Convert the linked list into a byte stream |
| */ |
| Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; |
| Status = AcpiRsCreateAmlResources (InBuffer->Pointer, &Buffer); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto Cleanup; |
| } |
| |
| /* Create and initialize the method parameter object */ |
| |
| Args[0] = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER); |
| if (!Args[0]) |
| { |
| /* |
| * Must free the buffer allocated above (otherwise it is freed |
| * later) |
| */ |
| ACPI_FREE (Buffer.Pointer); |
| Status = AE_NO_MEMORY; |
| goto Cleanup; |
| } |
| |
| Args[0]->Buffer.Length = (UINT32) Buffer.Length; |
| Args[0]->Buffer.Pointer = Buffer.Pointer; |
| Args[0]->Common.Flags = AOPOBJ_DATA_VALID; |
| Args[1] = NULL; |
| |
| /* Execute the method, no return value is expected */ |
| |
| Status = AcpiNsEvaluate (Info); |
| |
| /* Clean up and return the status from AcpiNsEvaluate */ |
| |
| AcpiUtRemoveReference (Args[0]); |
| |
| Cleanup: |
| ACPI_FREE (Info); |
| return_ACPI_STATUS (Status); |
| } |
| |