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Reference Manual (1.0.1) | ||
Reference Manual (1.0.2) | ||
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Reference Manual (1.0.1) | ||
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/** @file | ||
Defines a Tag GUID used to mark a UEFI legacy BIOS thunk driver based | ||
on legacy BIOS services and legacy option ROM. This Tag GUID must be installed on | ||
the ImageHandle of any module that follows the EFI Driver Model and uses | ||
the Int86() or FarCall() services of the Legacy Bios Protocol to produce | ||
a standard UEFI I/O Protocol. | ||
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> | ||
SPDX-License-Identifier: BSD-2-Clause-Patent | ||
**/ | ||
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#ifndef _LEGACY_BIOS_H_ | ||
#define _LEGACY_BIOS_H_ | ||
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/// | ||
/// The Global ID for the Legacy BIOS GUID that must be installed onto the ImageHandle | ||
/// of any module follows the EFI Driver Model and uses the Int86() or FarCall() | ||
/// services of the Legacy BIOS Protocol to produce a standard UEFI I/O Protocol. | ||
/// | ||
#define EFI_LEGACY_BIOS_GUID \ | ||
{ \ | ||
0x2e3044ac, 0x879f, 0x490f, {0x97, 0x60, 0xbb, 0xdf, 0xaf, 0x69, 0x5f, 0x50 } \ | ||
} | ||
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extern EFI_GUID gEfiLegacyBiosGuid; | ||
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#endif |
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/** @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. | ||
**/ | ||
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#ifndef _EFI_LEGACY_8259_H_ | ||
#define _EFI_LEGACY_8259_H_ | ||
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#define EFI_LEGACY_8259_PROTOCOL_GUID \ | ||
{ \ | ||
0x38321dba, 0x4fe0, 0x4e17, {0x8a, 0xec, 0x41, 0x30, 0x55, 0xea, 0xed, 0xc1 } \ | ||
} | ||
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typedef struct _EFI_LEGACY_8259_PROTOCOL EFI_LEGACY_8259_PROTOCOL; | ||
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typedef enum { | ||
Efi8259Irq0, | ||
Efi8259Irq1, | ||
Efi8259Irq2, | ||
Efi8259Irq3, | ||
Efi8259Irq4, | ||
Efi8259Irq5, | ||
Efi8259Irq6, | ||
Efi8259Irq7, | ||
Efi8259Irq8, | ||
Efi8259Irq9, | ||
Efi8259Irq10, | ||
Efi8259Irq11, | ||
Efi8259Irq12, | ||
Efi8259Irq13, | ||
Efi8259Irq14, | ||
Efi8259Irq15, | ||
Efi8259IrqMax | ||
} EFI_8259_IRQ; | ||
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typedef enum { | ||
Efi8259LegacyMode, | ||
Efi8259ProtectedMode, | ||
Efi8259MaxMode | ||
} EFI_8259_MODE; | ||
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/** | ||
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 occurred 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 | ||
); | ||
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/** | ||
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 | ||
); | ||
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/** | ||
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 | ||
); | ||
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/** | ||
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 | ||
); | ||
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/** | ||
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 | ||
); | ||
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/** | ||
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 | ||
); | ||
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/** | ||
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 | ||
); | ||
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/** | ||
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 | ||
); | ||
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/** | ||
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 | ||
); | ||
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/** | ||
@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; | ||
}; | ||
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extern EFI_GUID gEfiLegacy8259ProtocolGuid; | ||
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#endif |
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