102 lines
2 KiB
C
102 lines
2 KiB
C
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/*
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* ACPIGPIO.C -- ACPI OS Independent functions for low-level General-Purpose Event register I/O.
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*
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* Notes:
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*
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* This file provides OS independent functions that are called to read/write the GPE registers,
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* perform index <--> register translation, and to validate index values.
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*
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* This is the only place where the GPE0 and GPE1 blocks are differentiated.
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*
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*/
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#include "pch.h"
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UCHAR
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ACPIReadGpeStatusRegister (
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ULONG Register
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)
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/*++
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Routine Description:
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Read a GPE status register. Differentiation between GP0 and GP1 is
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handled here.
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Arguments:
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Register - The GPE status register to read. Registers are numbered sequentially,
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GP0 block first, then GP1 block appended.
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Return Value:
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The value of the status register
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--*/
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{
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return (UCHAR) READ_ACPI_REGISTER(GP_STATUS, Register);
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}
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VOID
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ACPIWriteGpeStatusRegister (
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ULONG Register,
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UCHAR Value
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)
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/*++
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Routine Description:
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Write a GPE status register. Differentiation between GP0 and GP1 is
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handled here.
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Arguments:
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Register - The GPE status register to write. Registers are numbered sequentially,
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GP0 block first, then GP1 block appended.
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Value - The value to be written
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Return Value:
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None
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--*/
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{
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WRITE_ACPI_REGISTER(GP_STATUS, Register, (USHORT) Value);
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}
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VOID
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ACPIWriteGpeEnableRegister (
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ULONG Register,
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UCHAR Value
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)
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/*++
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Routine Description:
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Write a GPE Enable register. Differentiation between GP0 and GP1 is
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handled here.
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Arguments:
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Register - The GPE enable register to write. Registers are numbered sequentially,
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GP0 block first, then GP1 block appended.
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Value - The value to be written
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Return Value:
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None
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--*/
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{
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ACPIPrint( (
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ACPI_PRINT_DPC,
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"ACPIWriteGpeEnableRegister: Writing GPE Enable register %x = %x\n",
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Register, Value
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) );
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WRITE_ACPI_REGISTER(GP_ENABLE, Register, (USHORT) Value);
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}
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