exregion.c

acpi tools for linux include acpiexec and acpixtract

    case ACPI_WRITE:

        switch (BitWidth)
        {
        case 8:
            ACPI_SET8 (LogicalAddrPtr) = (UINT8) *Value;
            break;

        case 16:
            ACPI_SET16 (LogicalAddrPtr) = (UINT16) *Value;
            break;

        case 32:
            ACPI_SET32 ( LogicalAddrPtr) = (UINT32) *Value;
            break;

        case 64:
            ACPI_SET64 (LogicalAddrPtr) = (UINT64) *Value;
            break;

        default:
            /* BitWidth was already validated */
            break;
        }
        break;

    default:
        Status = AE_BAD_PARAMETER;
        break;
    }

    return_ACPI_STATUS (Status);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiExSystemIoSpaceHandler
 *
 * 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
AcpiExSystemIoSpaceHandler (
    UINT32                  Function,
    ACPI_PHYSICAL_ADDRESS   Address,
    UINT32                  BitWidth,
    ACPI_INTEGER            *Value,
    void                    *HandlerContext,
    void                    *RegionContext)
{
    ACPI_STATUS             Status = AE_OK;
    UINT32                  Value32;


    ACPI_FUNCTION_TRACE (ExSystemIoSpaceHandler);


    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
        "System-IO (width %d) R/W %d Address=%8.8X%8.8X\n",
        BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address)));

    /* Decode the function parameter */

    switch (Function)
    {
    case ACPI_READ:

        Status = AcpiOsReadPort ((ACPI_IO_ADDRESS) Address,
                    &Value32, BitWidth);
        *Value = Value32;
        break;

    case ACPI_WRITE:

        Status = AcpiOsWritePort ((ACPI_IO_ADDRESS) Address,
                    (UINT32) *Value, BitWidth);
        break;

    default:
        Status = AE_BAD_PARAMETER;
        break;
    }

    return_ACPI_STATUS (Status);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiExPciConfigSpaceHandler
 *
 * 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
AcpiExPciConfigSpaceHandler (
    UINT32                  Function,
    ACPI_PHYSICAL_ADDRESS   Address,
    UINT32                  BitWidth,
    ACPI_INTEGER            *Value,
    void                    *HandlerContext,
    void                    *RegionContext)
{
    ACPI_STATUS             Status = AE_OK;
    ACPI_PCI_ID             *PciId;
    UINT16                  PciRegister;


    ACPI_FUNCTION_TRACE (ExPciConfigSpaceHandler);


    /*
     *  The arguments to AcpiOs(Read|Write)PciConfiguration are:
     *
     *  PciSegment  is the PCI bus segment range 0-31
     *  PciBus      is the PCI bus number range 0-255
     *  PciDevice   is the PCI device number range 0-31
     *  PciFunction is the PCI device function number
     *  PciRegister is the Config space register range 0-255 bytes
     *
     *  Value - input value for write, output address for read
     *
     */
    PciId       = (ACPI_PCI_ID *) RegionContext;
    PciRegister = (UINT16) (UINT32) Address;

    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
        "Pci-Config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n",
        Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device,
        PciId->Function, PciRegister));

    switch (Function)
    {
    case ACPI_READ:

        *Value = 0;
        Status = AcpiOsReadPciConfiguration (PciId, PciRegister,
                    Value, BitWidth);
        break;

    case ACPI_WRITE:

        Status = AcpiOsWritePciConfiguration (PciId, PciRegister,
                    *Value, BitWidth);
        break;

    default:

        Status = AE_BAD_PARAMETER;
        break;
    }

    return_ACPI_STATUS (Status);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiExCmosSpaceHandler
 *
 * 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 CMOS address space (Op Region)
 *
 ******************************************************************************/

ACPI_STATUS
AcpiExCmosSpaceHandler (
    UINT32                  Function,
    ACPI_PHYSICAL_ADDRESS   Address,
    UINT32                  BitWidth,
    ACPI_INTEGER            *Value,
    void                    *HandlerContext,
    void                    *RegionContext)
{
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (ExCmosSpaceHandler);


    return_ACPI_STATUS (Status);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiExPciBarSpaceHandler
 *
 * 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 BarTarget address space (Op Region)
 *
 ******************************************************************************/

ACPI_STATUS
AcpiExPciBarSpaceHandler (
    UINT32                  Function,
    ACPI_PHYSICAL_ADDRESS   Address,
    UINT32                  BitWidth,
    ACPI_INTEGER            *Value,
    void                    *HandlerContext,
    void                    *RegionContext)
{
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (ExPciBarSpaceHandler);


    return_ACPI_STATUS (Status);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiExDataTableSpaceHandler
 *
 * 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 Data Table address space (Op Region)
 *
 ******************************************************************************/

ACPI_STATUS
AcpiExDataTableSpaceHandler (
    UINT32                  Function,
    ACPI_PHYSICAL_ADDRESS   Address,
    UINT32                  BitWidth,
    ACPI_INTEGER            *Value,
    void                    *HandlerContext,
    void                    *RegionContext)
{
    ACPI_FUNCTION_TRACE (ExDataTableSpaceHandler);


    /* Perform the memory read or write */

    switch (Function)
    {
    case ACPI_READ:

        ACPI_MEMCPY (ACPI_CAST_PTR (char, Value), ACPI_PHYSADDR_TO_PTR (Address),
            ACPI_DIV_8 (BitWidth));
        break;

    case ACPI_WRITE:
    default:

        return_ACPI_STATUS (AE_SUPPORT);
    }

    return_ACPI_STATUS (AE_OK);
}