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130 lines
3.8 KiB
C
130 lines
3.8 KiB
C
/** @file
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This protocol abstracts the PIRQ programming from the generic EFI Compatibility Support Modules (CSMs).
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Copyright (c) 2007 - 2009, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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@par Revision Reference:
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This protocol is defined in Framework for EFI Compatibility Support Module spec
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Version 0.97.
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**/
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#ifndef _EFI_LEGACY_INTERRUPT_H_
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#define _EFI_LEGACY_INTERRUPT_H_
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#include <PiDxe.h>
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#define EFI_LEGACY_INTERRUPT_PROTOCOL_GUID \
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{ \
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0x31ce593d, 0x108a, 0x485d, {0xad, 0xb2, 0x78, 0xf2, 0x1f, 0x29, 0x66, 0xbe } \
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}
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typedef struct _EFI_LEGACY_INTERRUPT_PROTOCOL EFI_LEGACY_INTERRUPT_PROTOCOL;
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/**
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Get the number of PIRQs this hardware supports.
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@param This Protocol instance pointer.
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@param NumberPirsq Number of PIRQs that are supported.
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@retval EFI_SUCCESS The number of PIRQs was returned successfully.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_LEGACY_INTERRUPT_GET_NUMBER_PIRQS)(
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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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Gets the PCI location associated with this protocol.
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@param This Protocol instance pointer.
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@param Bus PCI Bus
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@param Device PCI Device
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@param Function PCI Function
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@retval EFI_SUCCESS The Bus, Device, and Function were returned successfully
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_LEGACY_INTERRUPT_GET_LOCATION)(
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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 PIRQ register and return the data
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@param This Protocol instance pointer.
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@param PirqNumber PIRQ register to read
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@param PirqData Data read
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@retval EFI_SUCCESS Data was read
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@retval EFI_INVALID_PARAMETER Invalid PIRQ number
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_LEGACY_INTERRUPT_READ_PIRQ)(
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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 specified PIRQ register with the given data.
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@param This Protocol instance pointer.
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@param PirqNumber PIRQ register to read.
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@param PirqData Data to write.
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@retval EFI_SUCCESS The PIRQ was programmed
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@retval EFI_INVALID_PARAMETER Invalid PIRQ number
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_LEGACY_INTERRUPT_WRITE_PIRQ)(
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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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struct _EFI_LEGACY_INTERRUPT_PROTOCOL {
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///
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/// Gets the number of PIRQs supported.
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///
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EFI_LEGACY_INTERRUPT_GET_NUMBER_PIRQS GetNumberPirqs;
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///
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/// Gets the PCI bus, device, and function that associated with this protocol.
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///
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EFI_LEGACY_INTERRUPT_GET_LOCATION GetLocation;
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///
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/// Reads the indicated PIRQ register.
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///
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EFI_LEGACY_INTERRUPT_READ_PIRQ ReadPirq;
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///
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/// Writes to the indicated PIRQ register.
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///
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EFI_LEGACY_INTERRUPT_WRITE_PIRQ WritePirq;
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};
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extern EFI_GUID gEfiLegacyInterruptProtocolGuid;
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#endif
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