ACPI_STATUS AcpiWrite	(	UINT64	Value,
		ACPI_GENERIC_ADDRESS *	Reg
	)
Definition at line 317 of file hwxface.c.
Referenced by AcpiWrite().
{
    UINT32                  Width;
    UINT64                  Address;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_NAME (AcpiWrite);


    /* Validate contents of the GAS register. Allow 64-bit transfers */

    Status = AcpiHwValidateRegister (Reg, 64, &Address);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    Width = Reg->BitWidth;
    if (Width == 64)
    {
        Width = 32; /* Break into two 32-bit transfers */
    }

    /*
     * Two address spaces supported: Memory or IO. PCI_Config is
     * not supported here because the GAS structure is insufficient
     */
    if (Reg->SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY)
    {
        Status = AcpiOsWriteMemory ((ACPI_PHYSICAL_ADDRESS)
                    Address, ACPI_LODWORD (Value), Width);
        if (ACPI_FAILURE (Status))
        {
            return (Status);
        }

        if (Reg->BitWidth == 64)
        {
            Status = AcpiOsWriteMemory ((ACPI_PHYSICAL_ADDRESS)
                        (Address + 4), ACPI_HIDWORD (Value), 32);
            if (ACPI_FAILURE (Status))
            {
                return (Status);
            }
        }
    }
    else /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
    {
        Status = AcpiHwWritePort ((ACPI_IO_ADDRESS)
                    Address, ACPI_LODWORD (Value), Width);
        if (ACPI_FAILURE (Status))
        {
            return (Status);
        }

        if (Reg->BitWidth == 64)
        {
            Status = AcpiHwWritePort ((ACPI_IO_ADDRESS)
                        (Address + 4), ACPI_HIDWORD (Value), 32);
            if (ACPI_FAILURE (Status))
            {
                return (Status);
            }
        }
    }

    ACPI_DEBUG_PRINT ((ACPI_DB_IO,
        "Wrote: %8.8X%8.8X width %2d   to %8.8X%8.8X (%s)\n",
        ACPI_FORMAT_UINT64 (Value), Reg->BitWidth,
        ACPI_FORMAT_UINT64 (Address),
        AcpiUtGetRegionName (Reg->SpaceId)));

    return (Status);
}
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