acpica/executer/exregion.c

db2bae30SDana Myers/******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * Module Name: exregion - ACPI default OpRegion (address space) handlers
db2bae30SDana Myers *
db2bae30SDana Myers *****************************************************************************/
db2bae30SDana Myers
26f3cdf0SGordon Ross/*
*385cc6b4SJerry Jelinek * Copyright (C) 2000 - 2016, Intel Corp.
db2bae30SDana Myers * All rights reserved.
db2bae30SDana Myers *
26f3cdf0SGordon Ross * Redistribution and use in source and binary forms, with or without
26f3cdf0SGordon Ross * modification, are permitted provided that the following conditions
26f3cdf0SGordon Ross * are met:
26f3cdf0SGordon Ross * 1. Redistributions of source code must retain the above copyright
26f3cdf0SGordon Ross *    notice, this list of conditions, and the following disclaimer,
26f3cdf0SGordon Ross *    without modification.
26f3cdf0SGordon Ross * 2. Redistributions in binary form must reproduce at minimum a disclaimer
26f3cdf0SGordon Ross *    substantially similar to the "NO WARRANTY" disclaimer below
26f3cdf0SGordon Ross *    ("Disclaimer") and any redistribution must be conditioned upon
26f3cdf0SGordon Ross *    including a substantially similar Disclaimer requirement for further
26f3cdf0SGordon Ross *    binary redistribution.
26f3cdf0SGordon Ross * 3. Neither the names of the above-listed copyright holders nor the names
26f3cdf0SGordon Ross *    of any contributors may be used to endorse or promote products derived
26f3cdf0SGordon Ross *    from this software without specific prior written permission.
db2bae30SDana Myers *
26f3cdf0SGordon Ross * Alternatively, this software may be distributed under the terms of the
26f3cdf0SGordon Ross * GNU General Public License ("GPL") version 2 as published by the Free
26f3cdf0SGordon Ross * Software Foundation.
db2bae30SDana Myers *
26f3cdf0SGordon Ross * NO WARRANTY
26f3cdf0SGordon Ross * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26f3cdf0SGordon Ross * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26f3cdf0SGordon Ross * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
26f3cdf0SGordon Ross * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26f3cdf0SGordon Ross * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26f3cdf0SGordon Ross * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26f3cdf0SGordon Ross * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26f3cdf0SGordon Ross * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26f3cdf0SGordon Ross * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
26f3cdf0SGordon Ross * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26f3cdf0SGordon Ross * POSSIBILITY OF SUCH DAMAGES.
26f3cdf0SGordon Ross */
db2bae30SDana Myers
db2bae30SDana Myers#include "acpi.h"
aa2aa9a6SDana Myers#include "accommon.h"
db2bae30SDana Myers#include "acinterp.h"
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers#define _COMPONENT          ACPI_EXECUTER
db2bae30SDana Myers        ACPI_MODULE_NAME    ("exregion")
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers/*******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * FUNCTION:    AcpiExSystemMemorySpaceHandler
db2bae30SDana Myers *
db2bae30SDana Myers * PARAMETERS:  Function            - Read or Write operation
db2bae30SDana Myers *              Address             - Where in the space to read or write
db2bae30SDana Myers *              BitWidth            - Field width in bits (8, 16, or 32)
db2bae30SDana Myers *              Value               - Pointer to in or out value
db2bae30SDana Myers *              HandlerContext      - Pointer to Handler's context
db2bae30SDana Myers *              RegionContext       - Pointer to context specific to the
db2bae30SDana Myers *                                    accessed region
db2bae30SDana Myers *
db2bae30SDana Myers * RETURN:      Status
db2bae30SDana Myers *
db2bae30SDana Myers * DESCRIPTION: Handler for the System Memory address space (Op Region)
db2bae30SDana Myers *
db2bae30SDana Myers ******************************************************************************/
db2bae30SDana Myers
db2bae30SDana MyersACPI_STATUS
db2bae30SDana MyersAcpiExSystemMemorySpaceHandler (
db2bae30SDana Myers    UINT32                  Function,
db2bae30SDana Myers    ACPI_PHYSICAL_ADDRESS   Address,
db2bae30SDana Myers    UINT32                  BitWidth,
26f3cdf0SGordon Ross    UINT64                  *Value,
db2bae30SDana Myers    void                    *HandlerContext,
db2bae30SDana Myers    void                    *RegionContext)
db2bae30SDana Myers{
db2bae30SDana Myers    ACPI_STATUS             Status = AE_OK;
db2bae30SDana Myers    void                    *LogicalAddrPtr = NULL;
db2bae30SDana Myers    ACPI_MEM_SPACE_CONTEXT  *MemInfo = RegionContext;
db2bae30SDana Myers    UINT32                  Length;
57190917SDana Myers    ACPI_SIZE               MapLength;
57190917SDana Myers    ACPI_SIZE               PageBoundaryMapLength;
db2bae30SDana Myers#ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
db2bae30SDana Myers    UINT32                  Remainder;
db2bae30SDana Myers#endif
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_FUNCTION_TRACE (ExSystemMemorySpaceHandler);
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    /* Validate and translate the bit width */
db2bae30SDana Myers
db2bae30SDana Myers    switch (BitWidth)
db2bae30SDana Myers    {
db2bae30SDana Myers    case 8:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers        Length = 1;
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case 16:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers        Length = 2;
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case 32:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers        Length = 4;
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case 64:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers        Length = 8;
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    default:
*385cc6b4SJerry Jelinek
26f3cdf0SGordon Ross        ACPI_ERROR ((AE_INFO, "Invalid SystemMemory width %u",
db2bae30SDana Myers            BitWidth));
db2bae30SDana Myers        return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers#ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
db2bae30SDana Myers    /*
db2bae30SDana Myers     * Hardware does not support non-aligned data transfers, we must verify
db2bae30SDana Myers     * the request.
db2bae30SDana Myers     */
26f3cdf0SGordon Ross    (void) AcpiUtShortDivide ((UINT64) Address, Length, NULL, &Remainder);
db2bae30SDana Myers    if (Remainder != 0)
db2bae30SDana Myers    {
db2bae30SDana Myers        return_ACPI_STATUS (AE_AML_ALIGNMENT);
db2bae30SDana Myers    }
db2bae30SDana Myers#endif
db2bae30SDana Myers
db2bae30SDana Myers    /*
db2bae30SDana Myers     * Does the request fit into the cached memory mapping?
db2bae30SDana Myers     * Is 1) Address below the current mapping? OR
db2bae30SDana Myers     *    2) Address beyond the current mapping?
db2bae30SDana Myers     */
db2bae30SDana Myers    if ((Address < MemInfo->MappedPhysicalAddress) ||
26f3cdf0SGordon Ross        (((UINT64) Address + Length) >
26f3cdf0SGordon Ross            ((UINT64)
db2bae30SDana Myers            MemInfo->MappedPhysicalAddress + MemInfo->MappedLength)))
db2bae30SDana Myers    {
db2bae30SDana Myers        /*
db2bae30SDana Myers         * The request cannot be resolved by the current memory mapping;
db2bae30SDana Myers         * Delete the existing mapping and create a new one.
db2bae30SDana Myers         */
db2bae30SDana Myers        if (MemInfo->MappedLength)
db2bae30SDana Myers        {
db2bae30SDana Myers            /* Valid mapping, delete it */
db2bae30SDana Myers
db2bae30SDana Myers            AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress,
db2bae30SDana Myers                MemInfo->MappedLength);
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /*
57190917SDana Myers         * October 2009: Attempt to map from the requested address to the
57190917SDana Myers         * end of the region. However, we will never map more than one
57190917SDana Myers         * page, nor will we cross a page boundary.
db2bae30SDana Myers         */
57190917SDana Myers        MapLength = (ACPI_SIZE)
db2bae30SDana Myers            ((MemInfo->Address + MemInfo->Length) - Address);
db2bae30SDana Myers
57190917SDana Myers        /*
57190917SDana Myers         * If mapping the entire remaining portion of the region will cross
57190917SDana Myers         * a page boundary, just map up to the page boundary, do not cross.
57190917SDana Myers         * On some systems, crossing a page boundary while mapping regions
57190917SDana Myers         * can cause warnings if the pages have different attributes
57190917SDana Myers         * due to resource management.
57190917SDana Myers         *
57190917SDana Myers         * This has the added benefit of constraining a single mapping to
57190917SDana Myers         * one page, which is similar to the original code that used a 4k
57190917SDana Myers         * maximum window.
57190917SDana Myers         */
*385cc6b4SJerry Jelinek        PageBoundaryMapLength = (ACPI_SIZE)
*385cc6b4SJerry Jelinek            (ACPI_ROUND_UP (Address, ACPI_DEFAULT_PAGE_SIZE) - Address);
57190917SDana Myers        if (PageBoundaryMapLength == 0)
db2bae30SDana Myers        {
57190917SDana Myers            PageBoundaryMapLength = ACPI_DEFAULT_PAGE_SIZE;
57190917SDana Myers        }
57190917SDana Myers
57190917SDana Myers        if (MapLength > PageBoundaryMapLength)
57190917SDana Myers        {
57190917SDana Myers            MapLength = PageBoundaryMapLength;
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /* Create a new mapping starting at the address given */
db2bae30SDana Myers
*385cc6b4SJerry Jelinek        MemInfo->MappedLogicalAddress = AcpiOsMapMemory (Address, MapLength);
db2bae30SDana Myers        if (!MemInfo->MappedLogicalAddress)
db2bae30SDana Myers        {
db2bae30SDana Myers            ACPI_ERROR ((AE_INFO,
26f3cdf0SGordon Ross                "Could not map memory at 0x%8.8X%8.8X, size %u",
*385cc6b4SJerry Jelinek                ACPI_FORMAT_UINT64 (Address), (UINT32) MapLength));
db2bae30SDana Myers            MemInfo->MappedLength = 0;
db2bae30SDana Myers            return_ACPI_STATUS (AE_NO_MEMORY);
db2bae30SDana Myers        }
db2bae30SDana Myers
db2bae30SDana Myers        /* Save the physical address and mapping size */
db2bae30SDana Myers
db2bae30SDana Myers        MemInfo->MappedPhysicalAddress = Address;
57190917SDana Myers        MemInfo->MappedLength = MapLength;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    /*
db2bae30SDana Myers     * Generate a logical pointer corresponding to the address we want to
db2bae30SDana Myers     * access
db2bae30SDana Myers     */
db2bae30SDana Myers    LogicalAddrPtr = MemInfo->MappedLogicalAddress +
26f3cdf0SGordon Ross        ((UINT64) Address - (UINT64) MemInfo->MappedPhysicalAddress);
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
26f3cdf0SGordon Ross        "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n",
*385cc6b4SJerry Jelinek        BitWidth, Function, ACPI_FORMAT_UINT64 (Address)));
db2bae30SDana Myers
db2bae30SDana Myers    /*
db2bae30SDana Myers     * Perform the memory read or write
db2bae30SDana Myers     *
db2bae30SDana Myers     * Note: For machines that do not support non-aligned transfers, the target
db2bae30SDana Myers     * address was checked for alignment above. We do not attempt to break the
db2bae30SDana Myers     * transfer up into smaller (byte-size) chunks because the AML specifically
db2bae30SDana Myers     * asked for a transfer width that the hardware may require.
db2bae30SDana Myers     */
db2bae30SDana Myers    switch (Function)
db2bae30SDana Myers    {
db2bae30SDana Myers    case ACPI_READ:
db2bae30SDana Myers
db2bae30SDana Myers        *Value = 0;
db2bae30SDana Myers        switch (BitWidth)
db2bae30SDana Myers        {
db2bae30SDana Myers        case 8:
*385cc6b4SJerry Jelinek
26f3cdf0SGordon Ross            *Value = (UINT64) ACPI_GET8 (LogicalAddrPtr);
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case 16:
*385cc6b4SJerry Jelinek
26f3cdf0SGordon Ross            *Value = (UINT64) ACPI_GET16 (LogicalAddrPtr);
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case 32:
*385cc6b4SJerry Jelinek
26f3cdf0SGordon Ross            *Value = (UINT64) ACPI_GET32 (LogicalAddrPtr);
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case 64:
*385cc6b4SJerry Jelinek
26f3cdf0SGordon Ross            *Value = (UINT64) ACPI_GET64 (LogicalAddrPtr);
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        default:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            /* BitWidth was already validated */
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            break;
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case ACPI_WRITE:
db2bae30SDana Myers
db2bae30SDana Myers        switch (BitWidth)
db2bae30SDana Myers        {
db2bae30SDana Myers        case 8:
*385cc6b4SJerry Jelinek
*385cc6b4SJerry Jelinek            ACPI_SET8 (LogicalAddrPtr, *Value);
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case 16:
*385cc6b4SJerry Jelinek
*385cc6b4SJerry Jelinek            ACPI_SET16 (LogicalAddrPtr, *Value);
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case 32:
*385cc6b4SJerry Jelinek
*385cc6b4SJerry Jelinek            ACPI_SET32 (LogicalAddrPtr, *Value);
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        case 64:
*385cc6b4SJerry Jelinek
*385cc6b4SJerry Jelinek            ACPI_SET64 (LogicalAddrPtr, *Value);
db2bae30SDana Myers            break;
db2bae30SDana Myers
db2bae30SDana Myers        default:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            /* BitWidth was already validated */
*385cc6b4SJerry Jelinek
db2bae30SDana Myers            break;
db2bae30SDana Myers        }
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    default:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers        Status = AE_BAD_PARAMETER;
db2bae30SDana Myers        break;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    return_ACPI_STATUS (Status);
db2bae30SDana Myers}
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers/*******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * FUNCTION:    AcpiExSystemIoSpaceHandler
db2bae30SDana Myers *
db2bae30SDana Myers * PARAMETERS:  Function            - Read or Write operation
db2bae30SDana Myers *              Address             - Where in the space to read or write
db2bae30SDana Myers *              BitWidth            - Field width in bits (8, 16, or 32)
db2bae30SDana Myers *              Value               - Pointer to in or out value
db2bae30SDana Myers *              HandlerContext      - Pointer to Handler's context
db2bae30SDana Myers *              RegionContext       - Pointer to context specific to the
db2bae30SDana Myers *                                    accessed region
db2bae30SDana Myers *
db2bae30SDana Myers * RETURN:      Status
db2bae30SDana Myers *
db2bae30SDana Myers * DESCRIPTION: Handler for the System IO address space (Op Region)
db2bae30SDana Myers *
db2bae30SDana Myers ******************************************************************************/
db2bae30SDana Myers
db2bae30SDana MyersACPI_STATUS
db2bae30SDana MyersAcpiExSystemIoSpaceHandler (
db2bae30SDana Myers    UINT32                  Function,
db2bae30SDana Myers    ACPI_PHYSICAL_ADDRESS   Address,
db2bae30SDana Myers    UINT32                  BitWidth,
26f3cdf0SGordon Ross    UINT64                  *Value,
db2bae30SDana Myers    void                    *HandlerContext,
db2bae30SDana Myers    void                    *RegionContext)
db2bae30SDana Myers{
db2bae30SDana Myers    ACPI_STATUS             Status = AE_OK;
db2bae30SDana Myers    UINT32                  Value32;
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_FUNCTION_TRACE (ExSystemIoSpaceHandler);
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
26f3cdf0SGordon Ross        "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n",
*385cc6b4SJerry Jelinek        BitWidth, Function, ACPI_FORMAT_UINT64 (Address)));
db2bae30SDana Myers
db2bae30SDana Myers    /* Decode the function parameter */
db2bae30SDana Myers
db2bae30SDana Myers    switch (Function)
db2bae30SDana Myers    {
db2bae30SDana Myers    case ACPI_READ:
db2bae30SDana Myers
aa2aa9a6SDana Myers        Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) Address,
db2bae30SDana Myers                    &Value32, BitWidth);
db2bae30SDana Myers        *Value = Value32;
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case ACPI_WRITE:
db2bae30SDana Myers
aa2aa9a6SDana Myers        Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address,
db2bae30SDana Myers                    (UINT32) *Value, BitWidth);
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    default:
*385cc6b4SJerry Jelinek
db2bae30SDana Myers        Status = AE_BAD_PARAMETER;
db2bae30SDana Myers        break;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    return_ACPI_STATUS (Status);
db2bae30SDana Myers}
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers/*******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * FUNCTION:    AcpiExPciConfigSpaceHandler
db2bae30SDana Myers *
db2bae30SDana Myers * PARAMETERS:  Function            - Read or Write operation
db2bae30SDana Myers *              Address             - Where in the space to read or write
db2bae30SDana Myers *              BitWidth            - Field width in bits (8, 16, or 32)
db2bae30SDana Myers *              Value               - Pointer to in or out value
db2bae30SDana Myers *              HandlerContext      - Pointer to Handler's context
db2bae30SDana Myers *              RegionContext       - Pointer to context specific to the
db2bae30SDana Myers *                                    accessed region
db2bae30SDana Myers *
db2bae30SDana Myers * RETURN:      Status
db2bae30SDana Myers *
db2bae30SDana Myers * DESCRIPTION: Handler for the PCI Config address space (Op Region)
db2bae30SDana Myers *
db2bae30SDana Myers ******************************************************************************/
db2bae30SDana Myers
db2bae30SDana MyersACPI_STATUS
db2bae30SDana MyersAcpiExPciConfigSpaceHandler (
db2bae30SDana Myers    UINT32                  Function,
db2bae30SDana Myers    ACPI_PHYSICAL_ADDRESS   Address,
db2bae30SDana Myers    UINT32                  BitWidth,
26f3cdf0SGordon Ross    UINT64                  *Value,
db2bae30SDana Myers    void                    *HandlerContext,
db2bae30SDana Myers    void                    *RegionContext)
db2bae30SDana Myers{
db2bae30SDana Myers    ACPI_STATUS             Status = AE_OK;
db2bae30SDana Myers    ACPI_PCI_ID             *PciId;
db2bae30SDana Myers    UINT16                  PciRegister;
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_FUNCTION_TRACE (ExPciConfigSpaceHandler);
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    /*
db2bae30SDana Myers     *  The arguments to AcpiOs(Read|Write)PciConfiguration are:
db2bae30SDana Myers     *
db2bae30SDana Myers     *  PciSegment  is the PCI bus segment range 0-31
db2bae30SDana Myers     *  PciBus      is the PCI bus number range 0-255
db2bae30SDana Myers     *  PciDevice   is the PCI device number range 0-31
db2bae30SDana Myers     *  PciFunction is the PCI device function number
db2bae30SDana Myers     *  PciRegister is the Config space register range 0-255 bytes
db2bae30SDana Myers     *
db2bae30SDana Myers     *  Value - input value for write, output address for read
db2bae30SDana Myers     *
db2bae30SDana Myers     */
db2bae30SDana Myers    PciId       = (ACPI_PCI_ID *) RegionContext;
db2bae30SDana Myers    PciRegister = (UINT16) (UINT32) Address;
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
*385cc6b4SJerry Jelinek        "Pci-Config %u (%u) Seg(%04x) Bus(%04x) "
*385cc6b4SJerry Jelinek        "Dev(%04x) Func(%04x) Reg(%04x)\n",
db2bae30SDana Myers        Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device,
db2bae30SDana Myers        PciId->Function, PciRegister));
db2bae30SDana Myers
db2bae30SDana Myers    switch (Function)
db2bae30SDana Myers    {
db2bae30SDana Myers    case ACPI_READ:
db2bae30SDana Myers
db2bae30SDana Myers        *Value = 0;
*385cc6b4SJerry Jelinek        Status = AcpiOsReadPciConfiguration (
*385cc6b4SJerry Jelinek            PciId, PciRegister, Value, BitWidth);
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case ACPI_WRITE:
db2bae30SDana Myers
*385cc6b4SJerry Jelinek        Status = AcpiOsWritePciConfiguration (
*385cc6b4SJerry Jelinek            PciId, PciRegister, *Value, BitWidth);
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    default:
db2bae30SDana Myers
db2bae30SDana Myers        Status = AE_BAD_PARAMETER;
db2bae30SDana Myers        break;
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    return_ACPI_STATUS (Status);
db2bae30SDana Myers}
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers/*******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * FUNCTION:    AcpiExCmosSpaceHandler
db2bae30SDana Myers *
db2bae30SDana Myers * PARAMETERS:  Function            - Read or Write operation
db2bae30SDana Myers *              Address             - Where in the space to read or write
db2bae30SDana Myers *              BitWidth            - Field width in bits (8, 16, or 32)
db2bae30SDana Myers *              Value               - Pointer to in or out value
db2bae30SDana Myers *              HandlerContext      - Pointer to Handler's context
db2bae30SDana Myers *              RegionContext       - Pointer to context specific to the
db2bae30SDana Myers *                                    accessed region
db2bae30SDana Myers *
db2bae30SDana Myers * RETURN:      Status
db2bae30SDana Myers *
db2bae30SDana Myers * DESCRIPTION: Handler for the CMOS address space (Op Region)
db2bae30SDana Myers *
db2bae30SDana Myers ******************************************************************************/
db2bae30SDana Myers
db2bae30SDana MyersACPI_STATUS
db2bae30SDana MyersAcpiExCmosSpaceHandler (
db2bae30SDana Myers    UINT32                  Function,
db2bae30SDana Myers    ACPI_PHYSICAL_ADDRESS   Address,
db2bae30SDana Myers    UINT32                  BitWidth,
26f3cdf0SGordon Ross    UINT64                  *Value,
db2bae30SDana Myers    void                    *HandlerContext,
db2bae30SDana Myers    void                    *RegionContext)
db2bae30SDana Myers{
db2bae30SDana Myers    ACPI_STATUS             Status = AE_OK;
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_FUNCTION_TRACE (ExCmosSpaceHandler);
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    return_ACPI_STATUS (Status);
db2bae30SDana Myers}
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers/*******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * FUNCTION:    AcpiExPciBarSpaceHandler
db2bae30SDana Myers *
db2bae30SDana Myers * PARAMETERS:  Function            - Read or Write operation
db2bae30SDana Myers *              Address             - Where in the space to read or write
db2bae30SDana Myers *              BitWidth            - Field width in bits (8, 16, or 32)
db2bae30SDana Myers *              Value               - Pointer to in or out value
db2bae30SDana Myers *              HandlerContext      - Pointer to Handler's context
db2bae30SDana Myers *              RegionContext       - Pointer to context specific to the
db2bae30SDana Myers *                                    accessed region
db2bae30SDana Myers *
db2bae30SDana Myers * RETURN:      Status
db2bae30SDana Myers *
db2bae30SDana Myers * DESCRIPTION: Handler for the PCI BarTarget address space (Op Region)
db2bae30SDana Myers *
db2bae30SDana Myers ******************************************************************************/
db2bae30SDana Myers
db2bae30SDana MyersACPI_STATUS
db2bae30SDana MyersAcpiExPciBarSpaceHandler (
db2bae30SDana Myers    UINT32                  Function,
db2bae30SDana Myers    ACPI_PHYSICAL_ADDRESS   Address,
db2bae30SDana Myers    UINT32                  BitWidth,
26f3cdf0SGordon Ross    UINT64                  *Value,
db2bae30SDana Myers    void                    *HandlerContext,
db2bae30SDana Myers    void                    *RegionContext)
db2bae30SDana Myers{
db2bae30SDana Myers    ACPI_STATUS             Status = AE_OK;
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    ACPI_FUNCTION_TRACE (ExPciBarSpaceHandler);
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers    return_ACPI_STATUS (Status);
db2bae30SDana Myers}
db2bae30SDana Myers
db2bae30SDana Myers
db2bae30SDana Myers/*******************************************************************************
db2bae30SDana Myers *
db2bae30SDana Myers * FUNCTION:    AcpiExDataTableSpaceHandler
db2bae30SDana Myers *
db2bae30SDana Myers * PARAMETERS:  Function            - Read or Write operation
db2bae30SDana Myers *              Address             - Where in the space to read or write
db2bae30SDana Myers *              BitWidth            - Field width in bits (8, 16, or 32)
db2bae30SDana Myers *              Value               - Pointer to in or out value
db2bae30SDana Myers *              HandlerContext      - Pointer to Handler's context
db2bae30SDana Myers *              RegionContext       - Pointer to context specific to the
db2bae30SDana Myers *                                    accessed region
db2bae30SDana Myers *
db2bae30SDana Myers * RETURN:      Status
db2bae30SDana Myers *
db2bae30SDana Myers * DESCRIPTION: Handler for the Data Table address space (Op Region)
db2bae30SDana Myers *
db2bae30SDana Myers ******************************************************************************/
db2bae30SDana Myers
db2bae30SDana MyersACPI_STATUS
db2bae30SDana MyersAcpiExDataTableSpaceHandler (
db2bae30SDana Myers    UINT32                  Function,
db2bae30SDana Myers    ACPI_PHYSICAL_ADDRESS   Address,
db2bae30SDana Myers    UINT32                  BitWidth,
26f3cdf0SGordon Ross    UINT64                  *Value,
db2bae30SDana Myers    void                    *HandlerContext,
db2bae30SDana Myers    void                    *RegionContext)
db2bae30SDana Myers{
db2bae30SDana Myers    ACPI_FUNCTION_TRACE (ExDataTableSpaceHandler);
db2bae30SDana Myers
db2bae30SDana Myers
26f3cdf0SGordon Ross    /*
26f3cdf0SGordon Ross     * Perform the memory read or write. The BitWidth was already
26f3cdf0SGordon Ross     * validated.
26f3cdf0SGordon Ross     */
db2bae30SDana Myers    switch (Function)
db2bae30SDana Myers    {
db2bae30SDana Myers    case ACPI_READ:
db2bae30SDana Myers
*385cc6b4SJerry Jelinek        memcpy (ACPI_CAST_PTR (char, Value), ACPI_PHYSADDR_TO_PTR (Address),
db2bae30SDana Myers            ACPI_DIV_8 (BitWidth));
db2bae30SDana Myers        break;
db2bae30SDana Myers
db2bae30SDana Myers    case ACPI_WRITE:
26f3cdf0SGordon Ross
*385cc6b4SJerry Jelinek        memcpy (ACPI_PHYSADDR_TO_PTR (Address), ACPI_CAST_PTR (char, Value),
26f3cdf0SGordon Ross            ACPI_DIV_8 (BitWidth));
26f3cdf0SGordon Ross        break;
26f3cdf0SGordon Ross
db2bae30SDana Myers    default:
db2bae30SDana Myers
26f3cdf0SGordon Ross        return_ACPI_STATUS (AE_BAD_PARAMETER);
db2bae30SDana Myers    }
db2bae30SDana Myers
db2bae30SDana Myers    return_ACPI_STATUS (AE_OK);
db2bae30SDana Myers}