mirror of https://github.com/acidanthera/audk.git
292 lines
9.4 KiB
C
292 lines
9.4 KiB
C
/** @file
|
|
This protocol abstracts the 8259 interrupt controller. This includes
|
|
PCI IRQ routing needed to program the PCI Interrupt Line register.
|
|
|
|
Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
@par Revision Reference:
|
|
This protocol is defined in Framework for EFI Compatibility Support Module spec
|
|
Version 0.97.
|
|
|
|
**/
|
|
|
|
#ifndef _EFI_LEGACY_8259_H_
|
|
#define _EFI_LEGACY_8259_H_
|
|
|
|
|
|
#define EFI_LEGACY_8259_PROTOCOL_GUID \
|
|
{ \
|
|
0x38321dba, 0x4fe0, 0x4e17, {0x8a, 0xec, 0x41, 0x30, 0x55, 0xea, 0xed, 0xc1 } \
|
|
}
|
|
|
|
typedef struct _EFI_LEGACY_8259_PROTOCOL EFI_LEGACY_8259_PROTOCOL;
|
|
|
|
typedef enum {
|
|
Efi8259Irq0,
|
|
Efi8259Irq1,
|
|
Efi8259Irq2,
|
|
Efi8259Irq3,
|
|
Efi8259Irq4,
|
|
Efi8259Irq5,
|
|
Efi8259Irq6,
|
|
Efi8259Irq7,
|
|
Efi8259Irq8,
|
|
Efi8259Irq9,
|
|
Efi8259Irq10,
|
|
Efi8259Irq11,
|
|
Efi8259Irq12,
|
|
Efi8259Irq13,
|
|
Efi8259Irq14,
|
|
Efi8259Irq15,
|
|
Efi8259IrqMax
|
|
} EFI_8259_IRQ;
|
|
|
|
typedef enum {
|
|
Efi8259LegacyMode,
|
|
Efi8259ProtectedMode,
|
|
Efi8259MaxMode
|
|
} EFI_8259_MODE;
|
|
|
|
/**
|
|
Get the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for
|
|
the legacy mode mask and the protected mode mask. The base address for the 8259
|
|
is different for legacy and protected mode, so two masks are required.
|
|
|
|
@param This The protocol instance pointer.
|
|
@param MasterBase The base vector for the Master PIC in the 8259 controller.
|
|
@param SlaveBase The base vector for the Slave PIC in the 8259 controller.
|
|
|
|
@retval EFI_SUCCESS The new bases were programmed.
|
|
@retval EFI_DEVICE_ERROR A device error occured programming the vector bases.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_LEGACY_8259_SET_VECTOR_BASE)(
|
|
IN EFI_LEGACY_8259_PROTOCOL *This,
|
|
IN UINT8 MasterBase,
|
|
IN UINT8 SlaveBase
|
|
);
|
|
|
|
/**
|
|
Get the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for
|
|
the legacy mode mask and the protected mode mask. The base address for the 8259
|
|
is different for legacy and protected mode, so two masks are required.
|
|
|
|
@param This The protocol instance pointer.
|
|
@param LegacyMask Bit 0 is Irq0 - Bit 15 is Irq15.
|
|
@param LegacyEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15.
|
|
@param ProtectedMask Bit 0 is Irq0 - Bit 15 is Irq15.
|
|
@param ProtectedEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15.
|
|
|
|
@retval EFI_SUCCESS 8259 status returned.
|
|
@retval EFI_DEVICE_ERROR Error reading 8259.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_LEGACY_8259_GET_MASK)(
|
|
IN EFI_LEGACY_8259_PROTOCOL *This,
|
|
OUT UINT16 *LegacyMask, OPTIONAL
|
|
OUT UINT16 *LegacyEdgeLevel, OPTIONAL
|
|
OUT UINT16 *ProtectedMask, OPTIONAL
|
|
OUT UINT16 *ProtectedEdgeLevel OPTIONAL
|
|
);
|
|
|
|
/**
|
|
Set the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for
|
|
the legacy mode mask and the protected mode mask. The base address for the 8259
|
|
is different for legacy and protected mode, so two masks are required.
|
|
Also set the edge/level masks.
|
|
|
|
@param This The protocol instance pointer.
|
|
@param LegacyMask Bit 0 is Irq0 - Bit 15 is Irq15.
|
|
@param LegacyEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15.
|
|
@param ProtectedMask Bit 0 is Irq0 - Bit 15 is Irq15.
|
|
@param ProtectedEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15.
|
|
|
|
@retval EFI_SUCCESS 8259 status returned.
|
|
@retval EFI_DEVICE_ERROR Error writing 8259.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_LEGACY_8259_SET_MASK)(
|
|
IN EFI_LEGACY_8259_PROTOCOL *This,
|
|
IN UINT16 *LegacyMask, OPTIONAL
|
|
IN UINT16 *LegacyEdgeLevel, OPTIONAL
|
|
IN UINT16 *ProtectedMask, OPTIONAL
|
|
IN UINT16 *ProtectedEdgeLevel OPTIONAL
|
|
);
|
|
|
|
/**
|
|
Set the 8259 mode of operation. The base address for the 8259 is different for
|
|
legacy and protected mode. The legacy mode requires the master 8259 to have a
|
|
master base of 0x08 and the slave base of 0x70. The protected mode base locations
|
|
are not defined. Interrupts must be masked by the caller before this function
|
|
is called. The interrupt mask from the current mode is saved. The interrupt
|
|
mask for the new mode is Mask, or if Mask does not exist the previously saved
|
|
mask is used.
|
|
|
|
@param This The protocol instance pointer.
|
|
@param Mode The mode of operation. i.e. the real mode or protected mode.
|
|
@param Mask Optional interupt mask for the new mode.
|
|
@param EdgeLevel Optional trigger mask for the new mode.
|
|
|
|
@retval EFI_SUCCESS 8259 programmed.
|
|
@retval EFI_DEVICE_ERROR Error writing to 8259.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_LEGACY_8259_SET_MODE)(
|
|
IN EFI_LEGACY_8259_PROTOCOL *This,
|
|
IN EFI_8259_MODE Mode,
|
|
IN UINT16 *Mask, OPTIONAL
|
|
IN UINT16 *EdgeLevel OPTIONAL
|
|
);
|
|
|
|
/**
|
|
Convert from IRQ to processor interrupt vector number.
|
|
|
|
@param This The protocol instance pointer.
|
|
@param Irq 8259 IRQ0 - IRQ15.
|
|
@param Vector The processor vector number that matches an Irq.
|
|
|
|
@retval EFI_SUCCESS The Vector matching Irq is returned.
|
|
@retval EFI_INVALID_PARAMETER The Irq not valid.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_LEGACY_8259_GET_VECTOR)(
|
|
IN EFI_LEGACY_8259_PROTOCOL *This,
|
|
IN EFI_8259_IRQ Irq,
|
|
OUT UINT8 *Vector
|
|
);
|
|
|
|
/**
|
|
Enable Irq by unmasking interrupt in 8259
|
|
|
|
@param This The protocol instance pointer.
|
|
@param Irq 8259 IRQ0 - IRQ15.
|
|
@param LevelTriggered TRUE if level triggered. FALSE if edge triggered.
|
|
|
|
@retval EFI_SUCCESS The Irq was enabled on 8259.
|
|
@retval EFI_INVALID_PARAMETER The Irq is not valid.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_LEGACY_8259_ENABLE_IRQ)(
|
|
IN EFI_LEGACY_8259_PROTOCOL *This,
|
|
IN EFI_8259_IRQ Irq,
|
|
IN BOOLEAN LevelTriggered
|
|
);
|
|
|
|
/**
|
|
Disable Irq by masking interrupt in 8259
|
|
|
|
@param This The protocol instance pointer.
|
|
@param Irq 8259 IRQ0 - IRQ15.
|
|
|
|
@retval EFI_SUCCESS The Irq was disabled on 8259.
|
|
@retval EFI_INVALID_PARAMETER The Irq is not valid.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_LEGACY_8259_DISABLE_IRQ)(
|
|
IN EFI_LEGACY_8259_PROTOCOL *This,
|
|
IN EFI_8259_IRQ Irq
|
|
);
|
|
|
|
/**
|
|
PciHandle represents a PCI config space of a PCI function. Vector
|
|
represents Interrupt Pin (from PCI config space) and it is the data
|
|
that is programmed into the Interrupt Line (from the PCI config space)
|
|
register.
|
|
|
|
@param This The protocol instance pointer.
|
|
@param PciHandle The PCI function to return the vector for.
|
|
@param Vector The vector for the function it matches.
|
|
|
|
@retval EFI_SUCCESS A valid Vector was returned.
|
|
@retval EFI_INVALID_PARAMETER PciHandle not valid.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_LEGACY_8259_GET_INTERRUPT_LINE)(
|
|
IN EFI_LEGACY_8259_PROTOCOL *This,
|
|
IN EFI_HANDLE PciHandle,
|
|
OUT UINT8 *Vector
|
|
);
|
|
|
|
/**
|
|
Send an EOI to 8259
|
|
|
|
@param This The protocol instance pointer.
|
|
@param Irq 8259 IRQ0 - IRQ15.
|
|
|
|
@retval EFI_SUCCESS EOI was successfully sent to 8259.
|
|
@retval EFI_INVALID_PARAMETER The Irq isnot valid.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_LEGACY_8259_END_OF_INTERRUPT)(
|
|
IN EFI_LEGACY_8259_PROTOCOL *This,
|
|
IN EFI_8259_IRQ Irq
|
|
);
|
|
|
|
/**
|
|
@par Protocol Description:
|
|
Abstracts the 8259 and APIC hardware control between EFI usage and
|
|
Compatibility16 usage.
|
|
|
|
@param SetVectorBase
|
|
Sets the vector bases for master and slave PICs.
|
|
|
|
@param GetMask
|
|
Gets IRQ and edge/level masks for 16-bit real mode and 32-bit protected mode.
|
|
|
|
@param SetMask
|
|
Sets the IRQ and edge\level masks for 16-bit real mode and 32-bit protected mode.
|
|
|
|
@param SetMode
|
|
Sets PIC mode to 16-bit real mode or 32-bit protected mode.
|
|
|
|
@param GetVector
|
|
Gets the base vector assigned to an IRQ.
|
|
|
|
@param EnableIrq
|
|
Enables an IRQ.
|
|
|
|
@param DisableIrq
|
|
Disables an IRQ.
|
|
|
|
@param GetInterruptLine
|
|
Gets an IRQ that is assigned to a PCI device.
|
|
|
|
@param EndOfInterrupt
|
|
Issues the end of interrupt command.
|
|
|
|
**/
|
|
struct _EFI_LEGACY_8259_PROTOCOL {
|
|
EFI_LEGACY_8259_SET_VECTOR_BASE SetVectorBase;
|
|
EFI_LEGACY_8259_GET_MASK GetMask;
|
|
EFI_LEGACY_8259_SET_MASK SetMask;
|
|
EFI_LEGACY_8259_SET_MODE SetMode;
|
|
EFI_LEGACY_8259_GET_VECTOR GetVector;
|
|
EFI_LEGACY_8259_ENABLE_IRQ EnableIrq;
|
|
EFI_LEGACY_8259_DISABLE_IRQ DisableIrq;
|
|
EFI_LEGACY_8259_GET_INTERRUPT_LINE GetInterruptLine;
|
|
EFI_LEGACY_8259_END_OF_INTERRUPT EndOfInterrupt;
|
|
};
|
|
|
|
extern EFI_GUID gEfiLegacy8259ProtocolGuid;
|
|
|
|
#endif
|