| 0,0 → 1,713 |
|---|
| /******************************************************************************* |
| * |
| * Module Name: rsxface - Public interfaces to 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 __RSXFACE_C__ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acresrc.h" |
| #include "acnamesp.h" |
| |
| #define _COMPONENT ACPI_RESOURCES |
| ACPI_MODULE_NAME ("rsxface") |
| |
| /* Local macros for 16,32-bit to 64-bit conversion */ |
| |
| #define ACPI_COPY_FIELD(Out, In, Field) ((Out)->Field = (In)->Field) |
| #define ACPI_COPY_ADDRESS(Out, In) \ |
| ACPI_COPY_FIELD(Out, In, ResourceType); \ |
| ACPI_COPY_FIELD(Out, In, ProducerConsumer); \ |
| ACPI_COPY_FIELD(Out, In, Decode); \ |
| ACPI_COPY_FIELD(Out, In, MinAddressFixed); \ |
| ACPI_COPY_FIELD(Out, In, MaxAddressFixed); \ |
| ACPI_COPY_FIELD(Out, In, Info); \ |
| ACPI_COPY_FIELD(Out, In, Granularity); \ |
| ACPI_COPY_FIELD(Out, In, Minimum); \ |
| ACPI_COPY_FIELD(Out, In, Maximum); \ |
| ACPI_COPY_FIELD(Out, In, TranslationOffset); \ |
| ACPI_COPY_FIELD(Out, In, AddressLength); \ |
| ACPI_COPY_FIELD(Out, In, ResourceSource); |
| |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| AcpiRsMatchVendorResource ( |
| ACPI_RESOURCE *Resource, |
| void *Context); |
| |
| static ACPI_STATUS |
| AcpiRsValidateParameters ( |
| ACPI_HANDLE DeviceHandle, |
| ACPI_BUFFER *Buffer, |
| ACPI_NAMESPACE_NODE **ReturnNode); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsValidateParameters |
| * |
| * PARAMETERS: DeviceHandle - Handle to a device |
| * Buffer - Pointer to a data buffer |
| * ReturnNode - Pointer to where the device node is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Common parameter validation for resource interfaces |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiRsValidateParameters ( |
| ACPI_HANDLE DeviceHandle, |
| ACPI_BUFFER *Buffer, |
| ACPI_NAMESPACE_NODE **ReturnNode) |
| { |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| |
| |
| ACPI_FUNCTION_TRACE (RsValidateParameters); |
| |
| |
| /* |
| * Must have a valid handle to an ACPI device |
| */ |
| if (!DeviceHandle) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| Node = AcpiNsValidateHandle (DeviceHandle); |
| if (!Node) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| if (Node->Type != ACPI_TYPE_DEVICE) |
| { |
| return_ACPI_STATUS (AE_TYPE); |
| } |
| |
| /* |
| * Validate the user buffer object |
| * |
| * if there is a non-zero buffer length we also need a valid pointer in |
| * the buffer. If it's a zero buffer length, we'll be returning the |
| * needed buffer size (later), so keep going. |
| */ |
| Status = AcpiUtValidateBuffer (Buffer); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| *ReturnNode = Node; |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiGetIrqRoutingTable |
| * |
| * PARAMETERS: DeviceHandle - Handle to the Bus device we are querying |
| * RetBuffer - Pointer to a buffer to receive the |
| * current resources for the device |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to get the IRQ routing table for a |
| * specific bus. The caller must first acquire a handle for the |
| * desired bus. The routine table is placed in the buffer pointed |
| * to by the RetBuffer variable parameter. |
| * |
| * If the function fails an appropriate status will be returned |
| * and the value of RetBuffer is undefined. |
| * |
| * This function attempts to execute the _PRT method contained in |
| * the object indicated by the passed DeviceHandle. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiGetIrqRoutingTable ( |
| ACPI_HANDLE DeviceHandle, |
| ACPI_BUFFER *RetBuffer) |
| { |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiGetIrqRoutingTable); |
| |
| |
| /* Validate parameters then dispatch to internal routine */ |
| |
| Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| Status = AcpiRsGetPrtMethodData (Node, RetBuffer); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiGetIrqRoutingTable) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiGetCurrentResources |
| * |
| * PARAMETERS: DeviceHandle - Handle to the device object for the |
| * device we are querying |
| * RetBuffer - Pointer to a buffer to receive the |
| * current resources for the device |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to get the current resources for a |
| * specific device. The caller must first acquire a handle for |
| * the desired device. The resource data is placed in the buffer |
| * pointed to by the RetBuffer variable parameter. |
| * |
| * If the function fails an appropriate status will be returned |
| * and the value of RetBuffer is undefined. |
| * |
| * This function attempts to execute the _CRS method contained in |
| * the object indicated by the passed DeviceHandle. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiGetCurrentResources ( |
| ACPI_HANDLE DeviceHandle, |
| ACPI_BUFFER *RetBuffer) |
| { |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiGetCurrentResources); |
| |
| |
| /* Validate parameters then dispatch to internal routine */ |
| |
| Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| Status = AcpiRsGetCrsMethodData (Node, RetBuffer); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiGetCurrentResources) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiGetPossibleResources |
| * |
| * PARAMETERS: DeviceHandle - Handle to the device object for the |
| * device we are querying |
| * RetBuffer - Pointer to a buffer to receive the |
| * resources for the device |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to get a list of the possible resources |
| * for a specific device. The caller must first acquire a handle |
| * for the desired device. The resource data is placed in the |
| * buffer pointed to by the RetBuffer variable. |
| * |
| * If the function fails an appropriate status will be returned |
| * and the value of RetBuffer is undefined. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiGetPossibleResources ( |
| ACPI_HANDLE DeviceHandle, |
| ACPI_BUFFER *RetBuffer) |
| { |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiGetPossibleResources); |
| |
| |
| /* Validate parameters then dispatch to internal routine */ |
| |
| Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| Status = AcpiRsGetPrsMethodData (Node, RetBuffer); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiGetPossibleResources) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiSetCurrentResources |
| * |
| * PARAMETERS: DeviceHandle - Handle to the device object for the |
| * device we are setting resources |
| * InBuffer - Pointer to a buffer containing the |
| * resources to be set for the device |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to set the current resources for a |
| * specific device. The caller must first acquire a handle for |
| * the desired device. The resource data is passed to the routine |
| * the buffer pointed to by the InBuffer variable. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiSetCurrentResources ( |
| ACPI_HANDLE DeviceHandle, |
| ACPI_BUFFER *InBuffer) |
| { |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiSetCurrentResources); |
| |
| |
| /* Validate the buffer, don't allow zero length */ |
| |
| if ((!InBuffer) || |
| (!InBuffer->Pointer) || |
| (!InBuffer->Length)) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| /* Validate parameters then dispatch to internal routine */ |
| |
| Status = AcpiRsValidateParameters (DeviceHandle, InBuffer, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| Status = AcpiRsSetSrsMethodData (Node, InBuffer); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiSetCurrentResources) |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiResourceToAddress64 |
| * |
| * PARAMETERS: Resource - Pointer to a resource |
| * Out - Pointer to the users's return buffer |
| * (a struct acpi_resource_address64) |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: If the resource is an address16, address32, or address64, |
| * copy it to the address64 return buffer. This saves the |
| * caller from having to duplicate code for different-sized |
| * addresses. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiResourceToAddress64 ( |
| ACPI_RESOURCE *Resource, |
| ACPI_RESOURCE_ADDRESS64 *Out) |
| { |
| ACPI_RESOURCE_ADDRESS16 *Address16; |
| ACPI_RESOURCE_ADDRESS32 *Address32; |
| |
| |
| if (!Resource || !Out) |
| { |
| return (AE_BAD_PARAMETER); |
| } |
| |
| /* Convert 16 or 32 address descriptor to 64 */ |
| |
| switch (Resource->Type) |
| { |
| case ACPI_RESOURCE_TYPE_ADDRESS16: |
| |
| Address16 = ACPI_CAST_PTR (ACPI_RESOURCE_ADDRESS16, &Resource->Data); |
| ACPI_COPY_ADDRESS (Out, Address16); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_ADDRESS32: |
| |
| Address32 = ACPI_CAST_PTR (ACPI_RESOURCE_ADDRESS32, &Resource->Data); |
| ACPI_COPY_ADDRESS (Out, Address32); |
| break; |
| |
| case ACPI_RESOURCE_TYPE_ADDRESS64: |
| |
| /* Simple copy for 64 bit source */ |
| |
| ACPI_MEMCPY (Out, &Resource->Data, sizeof (ACPI_RESOURCE_ADDRESS64)); |
| break; |
| |
| default: |
| return (AE_BAD_PARAMETER); |
| } |
| |
| return (AE_OK); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiResourceToAddress64) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiGetVendorResource |
| * |
| * PARAMETERS: DeviceHandle - Handle for the parent device object |
| * Name - Method name for the parent resource |
| * (METHOD_NAME__CRS or METHOD_NAME__PRS) |
| * Uuid - Pointer to the UUID to be matched. |
| * includes both subtype and 16-byte UUID |
| * RetBuffer - Where the vendor resource is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Walk a resource template for the specified evice to find a |
| * vendor-defined resource that matches the supplied UUID and |
| * UUID subtype. Returns a ACPI_RESOURCE of type Vendor. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiGetVendorResource ( |
| ACPI_HANDLE DeviceHandle, |
| char *Name, |
| ACPI_VENDOR_UUID *Uuid, |
| ACPI_BUFFER *RetBuffer) |
| { |
| ACPI_VENDOR_WALK_INFO Info; |
| ACPI_STATUS Status; |
| |
| |
| /* Other parameters are validated by AcpiWalkResources */ |
| |
| if (!Uuid || !RetBuffer) |
| { |
| return (AE_BAD_PARAMETER); |
| } |
| |
| Info.Uuid = Uuid; |
| Info.Buffer = RetBuffer; |
| Info.Status = AE_NOT_EXIST; |
| |
| /* Walk the _CRS or _PRS resource list for this device */ |
| |
| Status = AcpiWalkResources (DeviceHandle, Name, AcpiRsMatchVendorResource, |
| &Info); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| return (Info.Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiGetVendorResource) |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiRsMatchVendorResource |
| * |
| * PARAMETERS: ACPI_WALK_RESOURCE_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Match a vendor resource via the ACPI 3.0 UUID |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiRsMatchVendorResource ( |
| ACPI_RESOURCE *Resource, |
| void *Context) |
| { |
| ACPI_VENDOR_WALK_INFO *Info = Context; |
| ACPI_RESOURCE_VENDOR_TYPED *Vendor; |
| ACPI_BUFFER *Buffer; |
| ACPI_STATUS Status; |
| |
| |
| /* Ignore all descriptors except Vendor */ |
| |
| if (Resource->Type != ACPI_RESOURCE_TYPE_VENDOR) |
| { |
| return (AE_OK); |
| } |
| |
| Vendor = &Resource->Data.VendorTyped; |
| |
| /* |
| * For a valid match, these conditions must hold: |
| * |
| * 1) Length of descriptor data must be at least as long as a UUID struct |
| * 2) The UUID subtypes must match |
| * 3) The UUID data must match |
| */ |
| if ((Vendor->ByteLength < (ACPI_UUID_LENGTH + 1)) || |
| (Vendor->UuidSubtype != Info->Uuid->Subtype) || |
| (ACPI_MEMCMP (Vendor->Uuid, Info->Uuid->Data, ACPI_UUID_LENGTH))) |
| { |
| return (AE_OK); |
| } |
| |
| /* Validate/Allocate/Clear caller buffer */ |
| |
| Buffer = Info->Buffer; |
| Status = AcpiUtInitializeBuffer (Buffer, Resource->Length); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* Found the correct resource, copy and return it */ |
| |
| ACPI_MEMCPY (Buffer->Pointer, Resource, Resource->Length); |
| Buffer->Length = Resource->Length; |
| |
| /* Found the desired descriptor, terminate resource walk */ |
| |
| Info->Status = AE_OK; |
| return (AE_CTRL_TERMINATE); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiWalkResources |
| * |
| * PARAMETERS: DeviceHandle - Handle to the device object for the |
| * device we are querying |
| * Name - Method name of the resources we want |
| * (METHOD_NAME__CRS or METHOD_NAME__PRS) |
| * UserFunction - Called for each resource |
| * Context - Passed to UserFunction |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Retrieves the current or possible resource list for the |
| * specified device. The UserFunction is called once for |
| * each resource in the list. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiWalkResources ( |
| ACPI_HANDLE DeviceHandle, |
| char *Name, |
| ACPI_WALK_RESOURCE_CALLBACK UserFunction, |
| void *Context) |
| { |
| ACPI_STATUS Status; |
| ACPI_BUFFER Buffer; |
| ACPI_RESOURCE *Resource; |
| ACPI_RESOURCE *ResourceEnd; |
| |
| |
| ACPI_FUNCTION_TRACE (AcpiWalkResources); |
| |
| |
| /* Parameter validation */ |
| |
| if (!DeviceHandle || !UserFunction || !Name || |
| (!ACPI_COMPARE_NAME (Name, METHOD_NAME__CRS) && |
| !ACPI_COMPARE_NAME (Name, METHOD_NAME__PRS))) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| /* Get the _CRS or _PRS resource list */ |
| |
| Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; |
| Status = AcpiRsGetMethodData (DeviceHandle, Name, &Buffer); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Buffer now contains the resource list */ |
| |
| Resource = ACPI_CAST_PTR (ACPI_RESOURCE, Buffer.Pointer); |
| ResourceEnd = ACPI_ADD_PTR (ACPI_RESOURCE, Buffer.Pointer, Buffer.Length); |
| |
| /* Walk the resource list until the EndTag is found (or buffer end) */ |
| |
| while (Resource < ResourceEnd) |
| { |
| /* Sanity check the resource */ |
| |
| if (Resource->Type > ACPI_RESOURCE_TYPE_MAX) |
| { |
| Status = AE_AML_INVALID_RESOURCE_TYPE; |
| break; |
| } |
| |
| /* Invoke the user function, abort on any error returned */ |
| |
| Status = UserFunction (Resource, Context); |
| if (ACPI_FAILURE (Status)) |
| { |
| if (Status == AE_CTRL_TERMINATE) |
| { |
| /* This is an OK termination by the user function */ |
| |
| Status = AE_OK; |
| } |
| break; |
| } |
| |
| /* EndTag indicates end-of-list */ |
| |
| if (Resource->Type == ACPI_RESOURCE_TYPE_END_TAG) |
| { |
| break; |
| } |
| |
| /* Get the next resource descriptor */ |
| |
| Resource = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, Resource->Length); |
| } |
| |
| ACPI_FREE (Buffer.Pointer); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ACPI_EXPORT_SYMBOL (AcpiWalkResources) |