mirror of https://github.com/acidanthera/audk.git
118 lines
2.8 KiB
C
118 lines
2.8 KiB
C
/** @file
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Legacy Region Support
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Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _LEGACY_INTERRUPT_H_
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#define _LEGACY_INTERRUPT_H_
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#include <PiDxe.h>
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#include <Protocol/LegacyInterrupt.h>
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#include <Library/PcdLib.h>
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#include <Library/PciLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <OvmfPlatforms.h>
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#define LEGACY_INT_BUS 0
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#define LEGACY_INT_DEV_PIIX4 0x01
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#define LEGACY_INT_DEV_Q35 0x1f
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#define LEGACY_INT_FUNC 0
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#define PIRQN 0x00 // PIRQ Null
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#define PIRQA 0x60
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#define PIRQB 0x61
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#define PIRQC 0x62
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#define PIRQD 0x63
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#define PIRQE 0x68
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#define PIRQF 0x69
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#define PIRQG 0x6A
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#define PIRQH 0x6B
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#define MAX_PIRQ_NUMBER 8
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/**
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Return the number of PIRQs supported by this chipset.
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@param[in] This Pointer to LegacyInterrupt Protocol
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@param[out] NumberPirqs The pointer to return the max IRQ number supported
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@retval EFI_SUCCESS Max PIRQs successfully returned
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**/
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EFI_STATUS
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EFIAPI
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GetNumberPirqs (
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IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
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OUT UINT8 *NumberPirqs
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);
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/**
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Return PCI location of this device.
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$PIR table requires this info.
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@param[in] This - Protocol instance pointer.
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@param[out] Bus - PCI Bus
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@param[out] Device - PCI Device
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@param[out] Function - PCI Function
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@retval EFI_SUCCESS Bus/Device/Function returned
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**/
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EFI_STATUS
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EFIAPI
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GetLocation (
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IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
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OUT UINT8 *Bus,
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OUT UINT8 *Device,
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OUT UINT8 *Function
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);
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/**
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Read the given PIRQ register
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@param[in] This Protocol instance pointer
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@param[in] PirqNumber The Pirq register 0 = A, 1 = B etc
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@param[out] PirqData Value read
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@retval EFI_SUCCESS Decoding change affected.
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@retval EFI_INVALID_PARAMETER Invalid PIRQ number
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**/
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EFI_STATUS
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EFIAPI
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ReadPirq (
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IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
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IN UINT8 PirqNumber,
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OUT UINT8 *PirqData
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);
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/**
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Write the given PIRQ register
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@param[in] This Protocol instance pointer
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@param[in] PirqNumber The Pirq register 0 = A, 1 = B etc
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@param[out] PirqData Value to write
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@retval EFI_SUCCESS Decoding change affected.
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@retval EFI_INVALID_PARAMETER Invalid PIRQ number
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**/
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EFI_STATUS
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EFIAPI
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WritePirq (
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IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
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IN UINT8 PirqNumber,
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IN UINT8 PirqData
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);
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#endif
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