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