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/** @file
Legacy Region Support
Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are
licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#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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