diff options
Diffstat (limited to 'sys/contrib/dev/acpica/tools/acpiexec/aehandlers.c')
| -rw-r--r-- | sys/contrib/dev/acpica/tools/acpiexec/aehandlers.c | 909 |
1 files changed, 909 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/tools/acpiexec/aehandlers.c b/sys/contrib/dev/acpica/tools/acpiexec/aehandlers.c new file mode 100644 index 0000000..47c95ab --- /dev/null +++ b/sys/contrib/dev/acpica/tools/acpiexec/aehandlers.c @@ -0,0 +1,909 @@ +/****************************************************************************** + * + * Module Name: aehandlers - Various handlers for acpiexec + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2009, 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. + * + *****************************************************************************/ + +#include "aecommon.h" + +#define _COMPONENT ACPI_TOOLS + ACPI_MODULE_NAME ("aehandlers") + +/* Local prototypes */ + +void +AeNotifyHandler ( + ACPI_HANDLE Device, + UINT32 Value, + void *Context); + +void +AeDeviceNotifyHandler ( + ACPI_HANDLE Device, + UINT32 Value, + void *Context); + +ACPI_STATUS +AeExceptionHandler ( + ACPI_STATUS AmlStatus, + ACPI_NAME Name, + UINT16 Opcode, + UINT32 AmlOffset, + void *Context); + +ACPI_STATUS +AeTableHandler ( + UINT32 Event, + void *Table, + void *Context); + +ACPI_STATUS +AeRegionInit ( + ACPI_HANDLE RegionHandle, + UINT32 Function, + void *HandlerContext, + void **RegionContext); + + +UINT32 SigintCount = 0; +AE_DEBUG_REGIONS AeRegions; + + +/****************************************************************************** + * + * FUNCTION: AeCtrlCHandler + * + * PARAMETERS: Sig + * + * RETURN: none + * + * DESCRIPTION: Control-C handler. Abort running control method if any. + * + *****************************************************************************/ + +void __cdecl +AeCtrlCHandler ( + int Sig) +{ + + signal (SIGINT, SIG_IGN); + SigintCount++; + + AcpiOsPrintf ("Caught a ctrl-c (#%d)\n\n", SigintCount); + + if (AcpiGbl_MethodExecuting) + { + AcpiGbl_AbortMethod = TRUE; + signal (SIGINT, AeCtrlCHandler); + + if (SigintCount < 10) + { + return; + } + } + + exit (0); +} + + +/****************************************************************************** + * + * FUNCTION: AeNotifyHandler + * + * PARAMETERS: Standard notify handler parameters + * + * RETURN: Status + * + * DESCRIPTION: System notify handler for AcpiExec utility. Used by the ASL + * test suite(s) to communicate errors and other information to + * this utility via the Notify() operator. + * + *****************************************************************************/ + +void +AeNotifyHandler ( + ACPI_HANDLE Device, + UINT32 Value, + void *Context) +{ + + switch (Value) + { +#if 0 + case 0: + printf ("[AcpiExec] Method Error 0x%X: Results not equal\n", Value); + if (AcpiGbl_DebugFile) + { + AcpiOsPrintf ("[AcpiExec] Method Error: Results not equal\n"); + } + break; + + + case 1: + printf ("[AcpiExec] Method Error: Incorrect numeric result\n"); + if (AcpiGbl_DebugFile) + { + AcpiOsPrintf ("[AcpiExec] Method Error: Incorrect numeric result\n"); + } + break; + + + case 2: + printf ("[AcpiExec] Method Error: An operand was overwritten\n"); + if (AcpiGbl_DebugFile) + { + AcpiOsPrintf ("[AcpiExec] Method Error: An operand was overwritten\n"); + } + break; + +#endif + + default: + printf ("[AcpiExec] Received a System Notify on [%4.4s] %p Value 0x%2.2X (%s)\n", + AcpiUtGetNodeName (Device), Device, Value, + AcpiUtGetNotifyName (Value)); + if (AcpiGbl_DebugFile) + { + AcpiOsPrintf ("[AcpiExec] Received a system notify, Value 0x%2.2X\n", Value); + } + + (void) AcpiEvaluateObject (Device, "_NOT", NULL, NULL); + break; + } + +} + + +/****************************************************************************** + * + * FUNCTION: AeDeviceNotifyHandler + * + * PARAMETERS: Standard notify handler parameters + * + * RETURN: Status + * + * DESCRIPTION: Device notify handler for AcpiExec utility. Used by the ASL + * test suite(s) to communicate errors and other information to + * this utility via the Notify() operator. + * + *****************************************************************************/ + +void +AeDeviceNotifyHandler ( + ACPI_HANDLE Device, + UINT32 Value, + void *Context) +{ + + printf ("[AcpiExec] Received a Device Notify on [%4.4s] %p Value 0x%2.2X (%s)\n", + AcpiUtGetNodeName (Device), Device, Value, + AcpiUtGetNotifyName (Value)); + if (AcpiGbl_DebugFile) + { + AcpiOsPrintf ("[AcpiExec] Received a device notify, Value 0x%2.2X\n", Value); + } + + (void) AcpiEvaluateObject (Device, "_NOT", NULL, NULL); +} + + +/****************************************************************************** + * + * FUNCTION: AeExceptionHandler + * + * PARAMETERS: Standard exception handler parameters + * + * RETURN: Status + * + * DESCRIPTION: System exception handler for AcpiExec utility. + * + *****************************************************************************/ + +ACPI_STATUS +AeExceptionHandler ( + ACPI_STATUS AmlStatus, + ACPI_NAME Name, + UINT16 Opcode, + UINT32 AmlOffset, + void *Context) +{ + ACPI_STATUS NewAmlStatus = AmlStatus; + ACPI_STATUS Status; + ACPI_BUFFER ReturnObj; + ACPI_OBJECT_LIST ArgList; + ACPI_OBJECT Arg[3]; + const char *Exception; + + + Exception = AcpiFormatException (AmlStatus); + AcpiOsPrintf ("[AcpiExec] Exception %s during execution ", Exception); + if (Name) + { + AcpiOsPrintf ("of method [%4.4s]", (char *) &Name); + } + else + { + AcpiOsPrintf ("at module level (table load)"); + } + AcpiOsPrintf (" Opcode [%s] @%X\n", AcpiPsGetOpcodeName (Opcode), AmlOffset); + + /* + * Invoke the _ERR method if present + * + * Setup parameter object + */ + ArgList.Count = 3; + ArgList.Pointer = Arg; + + Arg[0].Type = ACPI_TYPE_INTEGER; + Arg[0].Integer.Value = AmlStatus; + + Arg[1].Type = ACPI_TYPE_STRING; + Arg[1].String.Pointer = ACPI_CAST_PTR (char, Exception); + Arg[1].String.Length = ACPI_STRLEN (Exception); + + Arg[2].Type = ACPI_TYPE_INTEGER; + Arg[2].Integer.Value = ACPI_TO_INTEGER (AcpiOsGetThreadId()); + + /* Setup return buffer */ + + ReturnObj.Pointer = NULL; + ReturnObj.Length = ACPI_ALLOCATE_BUFFER; + + Status = AcpiEvaluateObject (NULL, "\\_ERR", &ArgList, &ReturnObj); + if (ACPI_SUCCESS (Status)) + { + if (ReturnObj.Pointer) + { + /* Override original status */ + + NewAmlStatus = (ACPI_STATUS) + ((ACPI_OBJECT *) ReturnObj.Pointer)->Integer.Value; + + AcpiOsFree (ReturnObj.Pointer); + } + } + else if (Status != AE_NOT_FOUND) + { + AcpiOsPrintf ("[AcpiExec] Could not execute _ERR method, %s\n", + AcpiFormatException (Status)); + } + + /* Global override */ + + if (AcpiGbl_IgnoreErrors) + { + NewAmlStatus = AE_OK; + } + + if (NewAmlStatus != AmlStatus) + { + AcpiOsPrintf ("[AcpiExec] Exception override, new status %s\n", + AcpiFormatException (NewAmlStatus)); + } + + return (NewAmlStatus); +} + + +/****************************************************************************** + * + * FUNCTION: AeTableHandler + * + * PARAMETERS: Table handler + * + * RETURN: Status + * + * DESCRIPTION: System table handler for AcpiExec utility. + * + *****************************************************************************/ + +char *TableEvents[] = +{ + "LOAD", + "UNLOAD", + "UNKNOWN" +}; + +ACPI_STATUS +AeTableHandler ( + UINT32 Event, + void *Table, + void *Context) +{ + + if (Event > ACPI_NUM_TABLE_EVENTS) + { + Event = ACPI_NUM_TABLE_EVENTS; + } + + /* TBD: could dump entire table header, need a header dump routine */ + + printf ("[AcpiExec] Table Event %s, [%4.4s] %p\n", + TableEvents[Event], ((ACPI_TABLE_HEADER *) Table)->Signature, Table); + return (AE_OK); +} + + +/****************************************************************************** + * + * FUNCTION: AeGpeHandler + * + * DESCRIPTION: GPE handler for acpiexec + * + *****************************************************************************/ + +UINT32 +AeGpeHandler ( + void *Context) +{ + + + AcpiOsPrintf ("Received a GPE at handler\n"); + return (0); +} + + +/****************************************************************************** + * + * FUNCTION: AeRegionInit + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Opregion init function. + * + *****************************************************************************/ + +ACPI_STATUS +AeRegionInit ( + ACPI_HANDLE RegionHandle, + UINT32 Function, + void *HandlerContext, + void **RegionContext) +{ + /* + * Real simple, set the RegionContext to the RegionHandle + */ + *RegionContext = RegionHandle; + + return AE_OK; +} + + +/****************************************************************************** + * + * FUNCTION: AeInstallHandlers + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Install handlers for the AcpiExec utility. + * + *****************************************************************************/ + +ACPI_ADR_SPACE_TYPE SpaceId[] = {0, 1, 2, 3, 4, 5, 6, 0x80}; +#define AEXEC_NUM_REGIONS 8 + +ACPI_STATUS +AeInstallHandlers (void) +{ + ACPI_STATUS Status; + UINT32 i; + ACPI_HANDLE Handle; + + + ACPI_FUNCTION_ENTRY (); + + + Status = AcpiInstallTableHandler (AeTableHandler, NULL); + if (ACPI_FAILURE (Status)) + { + printf ("Could not install table handler, %s\n", + AcpiFormatException (Status)); + } + + Status = AcpiInstallExceptionHandler (AeExceptionHandler); + if (ACPI_FAILURE (Status)) + { + printf ("Could not install exception handler, %s\n", + AcpiFormatException (Status)); + } + + /* Install global notify handler */ + + Status = AcpiInstallNotifyHandler (ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY, + AeNotifyHandler, NULL); + if (ACPI_FAILURE (Status)) + { + printf ("Could not install a global notify handler, %s\n", + AcpiFormatException (Status)); + } + + Status = AcpiInstallNotifyHandler (ACPI_ROOT_OBJECT, ACPI_DEVICE_NOTIFY, + AeDeviceNotifyHandler, NULL); + if (ACPI_FAILURE (Status)) + { + printf ("Could not install a global notify handler, %s\n", + AcpiFormatException (Status)); + } + + Status = AcpiGetHandle (NULL, "\\_SB", &Handle); + if (ACPI_SUCCESS (Status)) + { + Status = AcpiInstallNotifyHandler (Handle, ACPI_SYSTEM_NOTIFY, + AeNotifyHandler, NULL); + if (ACPI_FAILURE (Status)) + { + printf ("Could not install a notify handler, %s\n", + AcpiFormatException (Status)); + } + + Status = AcpiRemoveNotifyHandler (Handle, ACPI_SYSTEM_NOTIFY, + AeNotifyHandler); + if (ACPI_FAILURE (Status)) + { + printf ("Could not remove a notify handler, %s\n", + AcpiFormatException (Status)); + } + + Status = AcpiInstallNotifyHandler (Handle, ACPI_ALL_NOTIFY, + AeNotifyHandler, NULL); + Status = AcpiRemoveNotifyHandler (Handle, ACPI_ALL_NOTIFY, + AeNotifyHandler); + Status = AcpiInstallNotifyHandler (Handle, ACPI_ALL_NOTIFY, + AeNotifyHandler, NULL); + if (ACPI_FAILURE (Status)) + { + printf ("Could not install a notify handler, %s\n", + AcpiFormatException (Status)); + } + } + else + { + printf ("No _SB_ found, %s\n", AcpiFormatException (Status)); + } + + /* Set a handler for all supported operation regions */ + + for (i = 0; i < AEXEC_NUM_REGIONS; i++) + { + Status = AcpiRemoveAddressSpaceHandler (AcpiGbl_RootNode, + SpaceId[i], AeRegionHandler); + + /* Install handler at the root object. + * TBD: all default handlers should be installed here! + */ + Status = AcpiInstallAddressSpaceHandler (AcpiGbl_RootNode, + SpaceId[i], AeRegionHandler, AeRegionInit, NULL); + if (ACPI_FAILURE (Status)) + { + ACPI_EXCEPTION ((AE_INFO, Status, + "Could not install an OpRegion handler for %s space(%d)", + AcpiUtGetRegionName((UINT8) SpaceId[i]), SpaceId[i])); + return (Status); + } + } + + /* + * Initialize the global Region Handler space + * MCW 3/23/00 + */ + AeRegions.NumberOfRegions = 0; + AeRegions.RegionList = NULL; + + return Status; +} + + +/****************************************************************************** + * + * FUNCTION: AeRegionHandler + * + * PARAMETERS: Standard region handler parameters + * + * RETURN: Status + * + * DESCRIPTION: Test handler - Handles some dummy regions via memory that can + * be manipulated in Ring 3. Simulates actual reads and writes. + * + *****************************************************************************/ + +ACPI_STATUS +AeRegionHandler ( + UINT32 Function, + ACPI_PHYSICAL_ADDRESS Address, + UINT32 BitWidth, + ACPI_INTEGER *Value, + void *HandlerContext, + void *RegionContext) +{ + + ACPI_OPERAND_OBJECT *RegionObject = (ACPI_OPERAND_OBJECT*) RegionContext; + ACPI_PHYSICAL_ADDRESS BaseAddress; + ACPI_SIZE Length; + BOOLEAN BufferExists; + AE_REGION *RegionElement; + void *BufferValue; + ACPI_STATUS Status; + UINT32 ByteWidth; + UINT32 i; + UINT8 SpaceId; + + + ACPI_FUNCTION_NAME (AeRegionHandler); + + /* + * If the object is not a region, simply return + */ + if (RegionObject->Region.Type != ACPI_TYPE_REGION) + { + return AE_OK; + } + + /* + * Region support can be disabled with the -r option. + * We use this to support dynamically loaded tables where we pass a valid + * address to the AML. + */ + if (AcpiGbl_DbOpt_NoRegionSupport) + { + BufferValue = ACPI_TO_POINTER (Address); + ByteWidth = (BitWidth / 8); + + if (BitWidth % 8) + { + ByteWidth += 1; + } + goto DoFunction; + } + + /* + * Find the region's address space and length before searching + * the linked list. + */ + BaseAddress = RegionObject->Region.Address; + Length = (ACPI_SIZE) RegionObject->Region.Length; + SpaceId = RegionObject->Region.SpaceId; + + ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION, "Operation Region request on %s at 0x%X\n", + AcpiUtGetRegionName (RegionObject->Region.SpaceId), + (UINT32) Address)); + + if (SpaceId == ACPI_ADR_SPACE_SYSTEM_IO) + { + /* + * For I/O space, exercise the port validation + */ + switch (Function & ACPI_IO_MASK) + { + case ACPI_READ: + Status = AcpiHwReadPort (Address, (UINT32 *) Value, BitWidth); + break; + + case ACPI_WRITE: + Status = AcpiHwWritePort (Address, (UINT32) *Value, BitWidth); + break; + + default: + Status = AE_BAD_PARAMETER; + break; + } + + if (ACPI_FAILURE (Status)) + { + return (Status); + } + + /* Now go ahead and simulate the hardware */ + } + + else if (SpaceId == ACPI_ADR_SPACE_SMBUS) + { + Length = 0; + + switch (Function & ACPI_IO_MASK) + { + case ACPI_READ: + switch (Function >> 16) + { + case AML_FIELD_ATTRIB_SMB_QUICK: + case AML_FIELD_ATTRIB_SMB_SEND_RCV: + case AML_FIELD_ATTRIB_SMB_BYTE: + Length = 1; + break; + + case AML_FIELD_ATTRIB_SMB_WORD: + case AML_FIELD_ATTRIB_SMB_WORD_CALL: + Length = 2; + break; + + case AML_FIELD_ATTRIB_SMB_BLOCK: + case AML_FIELD_ATTRIB_SMB_BLOCK_CALL: + Length = 32; + break; + + default: + break; + } + break; + + case ACPI_WRITE: + switch (Function >> 16) + { + case AML_FIELD_ATTRIB_SMB_QUICK: + case AML_FIELD_ATTRIB_SMB_SEND_RCV: + case AML_FIELD_ATTRIB_SMB_BYTE: + case AML_FIELD_ATTRIB_SMB_WORD: + case AML_FIELD_ATTRIB_SMB_BLOCK: + Length = 0; + break; + + case AML_FIELD_ATTRIB_SMB_WORD_CALL: + Length = 2; + break; + + case AML_FIELD_ATTRIB_SMB_BLOCK_CALL: + Length = 32; + break; + + default: + break; + } + break; + + default: + break; + } + + for (i = 0; i < Length; i++) + { + ((UINT8 *) Value)[i+2] = (UINT8) (0xA0 + i); + } + + ((UINT8 *) Value)[0] = 0x7A; + ((UINT8 *) Value)[1] = (UINT8) Length; + + return AE_OK; + } + + /* + * Search through the linked list for this region's buffer + */ + BufferExists = FALSE; + RegionElement = AeRegions.RegionList; + + if (AeRegions.NumberOfRegions) + { + while (!BufferExists && RegionElement) + { + if (RegionElement->Address == BaseAddress && + RegionElement->Length == Length && + RegionElement->SpaceId == SpaceId) + { + BufferExists = TRUE; + } + else + { + RegionElement = RegionElement->NextRegion; + } + } + } + + /* + * If the Region buffer does not exist, create it now + */ + if (!BufferExists) + { + /* + * Do the memory allocations first + */ + RegionElement = AcpiOsAllocate (sizeof (AE_REGION)); + if (!RegionElement) + { + return AE_NO_MEMORY; + } + + RegionElement->Buffer = AcpiOsAllocate (Length); + if (!RegionElement->Buffer) + { + AcpiOsFree (RegionElement); + return AE_NO_MEMORY; + } + + ACPI_MEMSET (RegionElement->Buffer, 0, Length); + RegionElement->Address = BaseAddress; + RegionElement->Length = Length; + RegionElement->SpaceId = SpaceId; + RegionElement->NextRegion = NULL; + + /* + * Increment the number of regions and put this one + * at the head of the list as it will probably get accessed + * more often anyway. + */ + AeRegions.NumberOfRegions += 1; + + if (AeRegions.RegionList) + { + RegionElement->NextRegion = AeRegions.RegionList; + } + + AeRegions.RegionList = RegionElement; + } + + /* + * Calculate the size of the memory copy + */ + ByteWidth = (BitWidth / 8); + + if (BitWidth % 8) + { + ByteWidth += 1; + } + + /* + * The buffer exists and is pointed to by RegionElement. + * We now need to verify the request is valid and perform the operation. + * + * NOTE: RegionElement->Length is in bytes, therefore it we compare against + * ByteWidth (see above) + */ + if (((ACPI_INTEGER) Address + ByteWidth) > + ((ACPI_INTEGER)(RegionElement->Address) + RegionElement->Length)) + { + ACPI_WARNING ((AE_INFO, + "Request on [%4.4s] is beyond region limit Req-%X+%X, Base=%X, Len-%X", + (RegionObject->Region.Node)->Name.Ascii, (UINT32) Address, + ByteWidth, (UINT32)(RegionElement->Address), + RegionElement->Length)); + + return AE_AML_REGION_LIMIT; + } + + /* + * Get BufferValue to point to the "address" in the buffer + */ + BufferValue = ((UINT8 *) RegionElement->Buffer + + ((ACPI_INTEGER) Address - (ACPI_INTEGER) RegionElement->Address)); + +DoFunction: + + /* + * Perform a read or write to the buffer space + */ + switch (Function) + { + case ACPI_READ: + /* + * Set the pointer Value to whatever is in the buffer + */ + ACPI_MEMCPY (Value, BufferValue, ByteWidth); + break; + + case ACPI_WRITE: + /* + * Write the contents of Value to the buffer + */ + ACPI_MEMCPY (BufferValue, Value, ByteWidth); + break; + + default: + return AE_BAD_PARAMETER; + } + return AE_OK; +} + + + |
