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/** @file
This protocol manages the legacy memory regions between 0xc0000 - 0xfffff
Copyright (c) 2007, Intel Corporation
All rights reserved. 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.
Module Name: LegacyInterrupt.h
@par Revision Reference:
This protocol is defined in Framework for EFI Compatibility Support Module spec
Version 0.96
**/
#ifndef _EFI_LEGACY_INTERRUPT_H_
#define _EFI_LEGACY_INTERRUPT_H_
#define EFI_LEGACY_INTERRUPT_PROTOCOL_GUID \
{ \
0x31ce593d, 0x108a, 0x485d, {0xad, 0xb2, 0x78, 0xf2, 0x1f, 0x29, 0x66, 0xbe } \
}
typedef struct _EFI_LEGACY_INTERRUPT_PROTOCOL EFI_LEGACY_INTERRUPT_PROTOCOL;
/**
Get the number of PIRQs this hardware supports.
@param This Protocol instance pointer.
@param NumberPirsq Number of PIRQs.
@retval EFI_SUCCESS Number of PIRQs returned.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_LEGACY_INTERRUPT_GET_NUMBER_PIRQS) (
IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
OUT UINT8 *NumberPirqs
);
/**
Gets the PCI location associated with this protocol.
@param This Protocol instance pointer.
@param Bus PCI Bus
@param Device PCI Device
@param Function PCI Function
@retval EFI_SUCCESS Bus/Device/Function returned
**/
typedef
EFI_STATUS
(EFIAPI *EFI_LEGACY_INTERRUPT_GET_LOCATION) (
IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
OUT UINT8 *Bus,
OUT UINT8 *Device,
OUT UINT8 *Function
);
/**
Read the PIRQ register and return the data
@param This Protocol instance pointer.
@param PirqNumber PIRQ register to read
@param PirqData Data read
@retval EFI_SUCCESS Data was read
@retval EFI_INVALID_PARAMETER Invalid PIRQ number
**/
typedef
EFI_STATUS
(EFIAPI *EFI_LEGACY_INTERRUPT_READ_PIRQ) (
IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
IN UINT8 PirqNumber,
OUT UINT8 *PirqData
);
/**
Write the specified PIRQ register with the given data.
@param This Protocol instance pointer.
@param PirqNumber PIRQ register to read.
@param PirqData Data written.
@retval EFI_SUCCESS Table pointer returned
@retval EFI_INVALID_PARAMETER Invalid PIRQ number
**/
typedef
EFI_STATUS
(EFIAPI *EFI_LEGACY_INTERRUPT_WRITE_PIRQ) (
IN EFI_LEGACY_INTERRUPT_PROTOCOL *This,
IN UINT8 PirqNumber,
IN UINT8 PirqData
);
/**
@par Protocol Description:
Abstracts the PIRQ programming from the generic EFI Compatibility Support Modules
@param GetNumberPirqs
Gets the number of PIRQs supported.
@param GetLocation
Gets the PCI bus, device, and function that associated with this protocol.
@param ReadPirq
Reads the indicated PIRQ register.
@param WritePirq
Writes to the indicated PIRQ register.
**/
struct _EFI_LEGACY_INTERRUPT_PROTOCOL {
EFI_LEGACY_INTERRUPT_GET_NUMBER_PIRQS GetNumberPirqs;
EFI_LEGACY_INTERRUPT_GET_LOCATION GetLocation;
EFI_LEGACY_INTERRUPT_READ_PIRQ ReadPirq;
EFI_LEGACY_INTERRUPT_WRITE_PIRQ WritePirq;
};
extern EFI_GUID gEfiLegacyInterruptProtocolGuid;
#endif
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