freebsd-dev/sys/contrib/dev/acpica/exregion.c

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/******************************************************************************
*
* Module Name: amregion - ACPI default OpRegion (address space) handlers
* $Revision: 44 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 __AMREGION_C__
#include "acpi.h"
#include "acinterp.h"
#include "amlcode.h"
#include "acnamesp.h"
#include "achware.h"
#include "acevents.h"
#define _COMPONENT INTERPRETER
MODULE_NAME ("amregion")
/*******************************************************************************
*
* FUNCTION: AcpiAmlSystemMemorySpaceHandler
*
* PARAMETERS: Function - Read or Write operation
* Address - Where in the space to read or write
* BitWidth - Field width in bits (8, 16, or 32)
* Value - Pointer to in or out value
* HandlerContext - Pointer to Handler's context
* RegionContext - Pointer to context specific to the
* accessed region
*
* RETURN: Status
*
* DESCRIPTION: Handler for the System Memory address space (Op Region)
*
******************************************************************************/
ACPI_STATUS
AcpiAmlSystemMemorySpaceHandler (
UINT32 Function,
ACPI_PHYSICAL_ADDRESS Address,
UINT32 BitWidth,
UINT32 *Value,
void *HandlerContext,
void *RegionContext)
{
ACPI_STATUS Status = AE_OK;
void *LogicalAddrPtr = NULL;
MEM_HANDLER_CONTEXT *MemInfo = RegionContext;
UINT32 Length;
FUNCTION_TRACE ("AmlSystemMemorySpaceHandler");
/* Validate and translate the bit width */
switch (BitWidth)
{
case 8:
Length = 1;
break;
case 16:
Length = 2;
break;
case 32:
Length = 4;
break;
default:
DEBUG_PRINT (ACPI_ERROR,
("AmlSystemMemorySpaceHandler: Invalid SystemMemory width %d\n",
BitWidth));
return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
break;
}
/*
* Does the request fit into the cached memory mapping?
* Is 1) Address below the current mapping? OR
* 2) Address beyond the current mapping?
*/
if ((Address < MemInfo->MappedPhysicalAddress) ||
(((ACPI_INTEGER) Address + Length) >
((ACPI_INTEGER) MemInfo->MappedPhysicalAddress + MemInfo->MappedLength)))
{
/*
* The request cannot be resolved by the current memory mapping;
* Delete the existing mapping and create a new one.
*/
if (MemInfo->MappedLength)
{
/* Valid mapping, delete it */
AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress,
MemInfo->MappedLength);
}
MemInfo->MappedLength = 0; /* In case of failure below */
/* Create a new mapping starting at the address given */
Status = AcpiOsMapMemory (Address, SYSMEM_REGION_WINDOW_SIZE,
(void **) &MemInfo->MappedLogicalAddress);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* TBD: should these pointers go to 64-bit in all cases ? */
MemInfo->MappedPhysicalAddress = Address;
MemInfo->MappedLength = SYSMEM_REGION_WINDOW_SIZE;
}
/*
* Generate a logical pointer corresponding to the address we want to
* access
*/
/* TBD: should these pointers go to 64-bit in all cases ? */
LogicalAddrPtr = MemInfo->MappedLogicalAddress +
((ACPI_INTEGER) Address - (ACPI_INTEGER) MemInfo->MappedPhysicalAddress);
/* Perform the memory read or write */
switch (Function)
{
case ADDRESS_SPACE_READ:
DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
("Read (%d width) Address=%p\n", BitWidth, Address));
switch (BitWidth)
{
case 8:
*Value = (UINT32)* (UINT8 *) LogicalAddrPtr;
break;
case 16:
MOVE_UNALIGNED16_TO_32 (Value, LogicalAddrPtr);
break;
case 32:
MOVE_UNALIGNED32_TO_32 (Value, LogicalAddrPtr);
break;
}
break;
case ADDRESS_SPACE_WRITE:
DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
("Write (%d width) Address=%p Value %X\n",
BitWidth, Address, *Value));
switch (BitWidth)
{
case 8:
*(UINT8 *) LogicalAddrPtr = (UINT8) *Value;
break;
case 16:
MOVE_UNALIGNED16_TO_16 (LogicalAddrPtr, Value);
break;
case 32:
MOVE_UNALIGNED32_TO_32 (LogicalAddrPtr, Value);
break;
}
break;
default:
Status = AE_BAD_PARAMETER;
break;
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiAmlSystemIoSpaceHandler
*
* PARAMETERS: Function - Read or Write operation
* Address - Where in the space to read or write
* BitWidth - Field width in bits (8, 16, or 32)
* Value - Pointer to in or out value
* HandlerContext - Pointer to Handler's context
* RegionContext - Pointer to context specific to the
* accessed region
*
* RETURN: Status
*
* DESCRIPTION: Handler for the System IO address space (Op Region)
*
******************************************************************************/
ACPI_STATUS
AcpiAmlSystemIoSpaceHandler (
UINT32 Function,
ACPI_PHYSICAL_ADDRESS Address,
UINT32 BitWidth,
UINT32 *Value,
void *HandlerContext,
void *RegionContext)
{
ACPI_STATUS Status = AE_OK;
FUNCTION_TRACE ("AmlSystemIoSpaceHandler");
/* Decode the function parameter */
switch (Function)
{
case ADDRESS_SPACE_READ:
DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
("Read(%d width) Address=%p\n", BitWidth, Address));
switch (BitWidth)
{
/* I/O Port width */
case 8:
*Value = (UINT32) AcpiOsIn8 ((ACPI_IO_ADDRESS) Address);
break;
case 16:
*Value = (UINT32) AcpiOsIn16 ((ACPI_IO_ADDRESS) Address);
break;
case 32:
*Value = AcpiOsIn32 ((ACPI_IO_ADDRESS) Address);
break;
default:
DEBUG_PRINT (ACPI_ERROR,
("AmlSystemIoSpaceHandler: Invalid SystemIO width %d\n",
BitWidth));
Status = AE_AML_OPERAND_VALUE;
}
break;
case ADDRESS_SPACE_WRITE:
DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
("Write(%d width) Address=%p Value %X\n",
BitWidth, Address, *Value));
switch (BitWidth)
{
/* I/O Port width */
case 8:
AcpiOsOut8 ((ACPI_IO_ADDRESS) Address, (UINT8) *Value);
break;
case 16:
AcpiOsOut16 ((ACPI_IO_ADDRESS) Address, (UINT16) *Value);
break;
case 32:
AcpiOsOut32 ((ACPI_IO_ADDRESS) Address, *Value);
break;
default:
DEBUG_PRINT (ACPI_ERROR, (
"AmlSystemIoSpaceHandler: Invalid SystemIO width %d\n",
BitWidth));
Status = AE_AML_OPERAND_VALUE;
}
break;
default:
Status = AE_BAD_PARAMETER;
break;
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiAmlPciConfigSpaceHandler
*
* PARAMETERS: Function - Read or Write operation
* Address - Where in the space to read or write
* BitWidth - Field width in bits (8, 16, or 32)
* Value - Pointer to in or out value
* HandlerContext - Pointer to Handler's context
* RegionContext - Pointer to context specific to the
* accessed region
*
* RETURN: Status
*
* DESCRIPTION: Handler for the PCI Config address space (Op Region)
*
******************************************************************************/
ACPI_STATUS
AcpiAmlPciConfigSpaceHandler (
UINT32 Function,
ACPI_PHYSICAL_ADDRESS Address,
UINT32 BitWidth,
UINT32 *Value,
void *HandlerContext,
void *RegionContext)
{
ACPI_STATUS Status = AE_OK;
UINT32 PciBus;
UINT32 DevFunc;
UINT8 PciReg;
PCI_HANDLER_CONTEXT *PCIContext;
FUNCTION_TRACE ("AmlPciConfigSpaceHandler");
/*
* The arguments to AcpiOs(Read|Write)PciCfg(Byte|Word|Dword) are:
*
* SegBus - 0xSSSSBBBB - SSSS is the PCI bus segment
* BBBB is the PCI bus number
*
* DevFunc - 0xDDDDFFFF - DDDD is the PCI device number
* FFFF is the PCI device function number
*
* RegNum - Config space register must be < 40h
*
* Value - input value for write, output for read
*
*/
PCIContext = (PCI_HANDLER_CONTEXT *) RegionContext;
PciBus = LOWORD(PCIContext->Seg) << 16;
PciBus |= LOWORD(PCIContext->Bus);
DevFunc = PCIContext->DevFunc;
PciReg = (UINT8) Address;
switch (Function)
{
case ADDRESS_SPACE_READ:
DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
("R%d S(%04x) B(%04x) DF(%08x) R(%04x)\n", BitWidth,
PCIContext->Seg,PCIContext->Bus,PCIContext->DevFunc, PciReg));
*Value = 0;
switch (BitWidth)
{
/* PCI Register width */
case 8:
Status = AcpiOsReadPciCfgByte (PciBus, DevFunc, PciReg,
(UINT8 *) Value);
break;
case 16:
Status = AcpiOsReadPciCfgWord (PciBus, DevFunc, PciReg,
(UINT16 *) Value);
break;
case 32:
Status = AcpiOsReadPciCfgDword (PciBus, DevFunc, PciReg,
Value);
break;
default:
DEBUG_PRINT (ACPI_ERROR,
("AmlPciConfigSpaceHandler: Invalid PCIConfig width %d\n",
BitWidth));
Status = AE_AML_OPERAND_VALUE;
} /* Switch bitWidth */
break;
case ADDRESS_SPACE_WRITE:
DEBUG_PRINT ((TRACE_OPREGION | VERBOSE_INFO),
("W%d S(%04x) B(%04x) DF(%08x) R(%04x) D(%08x)\n", BitWidth,
PCIContext->Seg,PCIContext->Bus,PCIContext->DevFunc,
PciReg,*Value));
switch (BitWidth)
{
/* PCI Register width */
case 8:
Status = AcpiOsWritePciCfgByte (PciBus, DevFunc, PciReg,
*(UINT8 *) Value);
break;
case 16:
Status = AcpiOsWritePciCfgWord (PciBus, DevFunc, PciReg,
*(UINT16 *) Value);
break;
case 32:
Status = AcpiOsWritePciCfgDword (PciBus, DevFunc, PciReg,
*Value);
break;
default:
DEBUG_PRINT (ACPI_ERROR, (
"AmlPciConfigSpaceHandler: Invalid PCIConfig width %d\n",
BitWidth));
Status = AE_AML_OPERAND_VALUE;
} /* Switch bitWidth */
break;
default:
Status = AE_BAD_PARAMETER;
break;
}
return_ACPI_STATUS (Status);
}