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/** @file
Driver implementing the Tiano Legacy 8259 Protocol
Copyright (c) 2005 - 2009, 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 _8259_H__
#define _8259_H__
#include <FrameworkDxe.h>
#include <Protocol/Legacy8259.h>
#include <Protocol/PciIo.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Library/IoLib.h>
#include <Library/BaseLib.h>
#include <Library/PcdLib.h>
#include <IndustryStandard/Pci.h>
// 8259 Hardware definitions
#define LEGACY_MODE_BASE_VECTOR_MASTER 0x08
#define LEGACY_MODE_BASE_VECTOR_SLAVE 0x70
#define PROTECTED_MODE_BASE_VECTOR_MASTER 0x68
#define PROTECTED_MODE_BASE_VECTOR_SLAVE 0x70
#define LEGACY_8259_CONTROL_REGISTER_MASTER 0x20
#define LEGACY_8259_MASK_REGISTER_MASTER 0x21
#define LEGACY_8259_CONTROL_REGISTER_SLAVE 0xA0
#define LEGACY_8259_MASK_REGISTER_SLAVE 0xA1
#define LEGACY_8259_EDGE_LEVEL_TRIGGERED_REGISTER_MASTER 0x4D0
#define LEGACY_8259_EDGE_LEVEL_TRIGGERED_REGISTER_SLAVE 0x4D1
#define LEGACY_8259_EOI 0x20
// Protocol Function Prototypes
/**
Sets the base address for the 8259 master and slave PICs.
@param[in] This Indicates the EFI_LEGACY_8259_PROTOCOL instance.
@param[in] MasterBase Interrupt vectors for IRQ0-IRQ7.
@param[in] SlaveBase Interrupt vectors for IRQ8-IRQ15.
@retval EFI_SUCCESS The 8259 PIC was programmed successfully.
@retval EFI_DEVICE_ERROR There was an error while writing to the 8259 PIC.
**/
EFI_STATUS
EFIAPI
Interrupt8259SetVectorBase (
IN EFI_LEGACY_8259_PROTOCOL *This,
IN UINT8 MasterBase,
IN UINT8 SlaveBase
);
/**
Gets the current 16-bit real mode and 32-bit protected-mode IRQ masks.
@param[in] This Indicates the EFI_LEGACY_8259_PROTOCOL instance.
@param[out] LegacyMask 16-bit mode interrupt mask for IRQ0-IRQ15.
@param[out] LegacyEdgeLevel 16-bit mode edge/level mask for IRQ-IRQ15.
@param[out] ProtectedMask 32-bit mode interrupt mask for IRQ0-IRQ15.
@param[out] ProtectedEdgeLevel 32-bit mode edge/level mask for IRQ0-IRQ15.
@retval EFI_SUCCESS The 8259 PIC was programmed successfully.
@retval EFI_DEVICE_ERROR There was an error while reading the 8259 PIC.
**/
EFI_STATUS
EFIAPI
Interrupt8259GetMask (
IN EFI_LEGACY_8259_PROTOCOL *This,
OUT UINT16 *LegacyMask, OPTIONAL
OUT UINT16 *LegacyEdgeLevel, OPTIONAL
OUT UINT16 *ProtectedMask, OPTIONAL
OUT UINT16 *ProtectedEdgeLevel OPTIONAL
);
/**
Sets the current 16-bit real mode and 32-bit protected-mode IRQ masks.
@param[in] This Indicates the EFI_LEGACY_8259_PROTOCOL instance.
@param[in] LegacyMask 16-bit mode interrupt mask for IRQ0-IRQ15.
@param[in] LegacyEdgeLevel 16-bit mode edge/level mask for IRQ-IRQ15.
@param[in] ProtectedMask 32-bit mode interrupt mask for IRQ0-IRQ15.
@param[in] ProtectedEdgeLevel 32-bit mode edge/level mask for IRQ0-IRQ15.
@retval EFI_SUCCESS The 8259 PIC was programmed successfully.
@retval EFI_DEVICE_ERROR There was an error while writing the 8259 PIC.
**/
EFI_STATUS
EFIAPI
Interrupt8259SetMask (
IN EFI_LEGACY_8259_PROTOCOL *This,
IN UINT16 *LegacyMask, OPTIONAL
IN UINT16 *LegacyEdgeLevel, OPTIONAL
IN UINT16 *ProtectedMask, OPTIONAL
IN UINT16 *ProtectedEdgeLevel OPTIONAL
);
/**
Sets the mode of the PICs.
@param[in] This Indicates the EFI_LEGACY_8259_PROTOCOL instance.
@param[in] Mode 16-bit real or 32-bit protected mode.
@param[in] Mask The value with which to set the interrupt mask.
@param[in] EdgeLevel The value with which to set the edge/level mask.
@retval EFI_SUCCESS The mode was set successfully.
@retval EFI_INVALID_PARAMETER The mode was not set.
**/
EFI_STATUS
EFIAPI
Interrupt8259SetMode (
IN EFI_LEGACY_8259_PROTOCOL *This,
IN EFI_8259_MODE Mode,
IN UINT16 *Mask, OPTIONAL
IN UINT16 *EdgeLevel OPTIONAL
);
/**
Translates the IRQ into a vector.
@param[in] This Indicates the EFI_LEGACY_8259_PROTOCOL instance.
@param[in] Irq IRQ0-IRQ15.
@param[out] Vector The vector that is assigned to the IRQ.
@retval EFI_SUCCESS The Vector that matches Irq was returned.
@retval EFI_INVALID_PARAMETER Irq is not valid.
**/
EFI_STATUS
EFIAPI
Interrupt8259GetVector (
IN EFI_LEGACY_8259_PROTOCOL *This,
IN EFI_8259_IRQ Irq,
OUT UINT8 *Vector
);
/**
Enables the specified IRQ.
@param[in] This Indicates the EFI_LEGACY_8259_PROTOCOL instance.
@param[in] Irq IRQ0-IRQ15.
@param[in] LevelTriggered 0 = Edge triggered; 1 = Level triggered.
@retval EFI_SUCCESS The Irq was enabled on the 8259 PIC.
@retval EFI_INVALID_PARAMETER The Irq is not valid.
**/
EFI_STATUS
EFIAPI
Interrupt8259EnableIrq (
IN EFI_LEGACY_8259_PROTOCOL *This,
IN EFI_8259_IRQ Irq,
IN BOOLEAN LevelTriggered
);
/**
Disables the specified IRQ.
@param[in] This Indicates the EFI_LEGACY_8259_PROTOCOL instance.
@param[in] Irq IRQ0-IRQ15.
@retval EFI_SUCCESS The Irq was disabled on the 8259 PIC.
@retval EFI_INVALID_PARAMETER The Irq is not valid.
**/
EFI_STATUS
EFIAPI
Interrupt8259DisableIrq (
IN EFI_LEGACY_8259_PROTOCOL *This,
IN EFI_8259_IRQ Irq
);
/**
Reads the PCI configuration space to get the interrupt number that is assigned to the card.
@param[in] This Indicates the EFI_LEGACY_8259_PROTOCOL instance.
@param[in] PciHandle PCI function for which to return the vector.
@param[out] Vector IRQ number that corresponds to the interrupt line.
@retval EFI_SUCCESS The interrupt line value was read successfully.
**/
EFI_STATUS
EFIAPI
Interrupt8259GetInterruptLine (
IN EFI_LEGACY_8259_PROTOCOL *This,
IN EFI_HANDLE PciHandle,
OUT UINT8 *Vector
);
/**
Issues the End of Interrupt (EOI) commands to PICs.
@param[in] This Indicates the EFI_LEGACY_8259_PROTOCOL instance.
@param[in] Irq The interrupt for which to issue the EOI command.
@retval EFI_SUCCESS The EOI command was issued.
@retval EFI_INVALID_PARAMETER The Irq is not valid.
**/
EFI_STATUS
EFIAPI
Interrupt8259EndOfInterrupt (
IN EFI_LEGACY_8259_PROTOCOL *This,
IN EFI_8259_IRQ Irq
);
#endif
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