/** @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 |