239 lines
8.2 KiB
C
239 lines
8.2 KiB
C
/** @file
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Legacy 8259 PEIM definition
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;******************************************************************************
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;* Copyright (c) 2015, Insyde Software Corporation. All Rights Reserved.
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;*
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;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
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;* transmit, broadcast, present, recite, release, license or otherwise exploit
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;* any part of this publication in any form, by any means, without the prior
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;* written permission of Insyde Software Corporation.
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;*
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;******************************************************************************
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**/
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#ifndef _LEGACY_8259_PEI_H_
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#define _LEGACY_8259_PEI_H_
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#include <Library/IoLib.h>
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#include <Library/BaseLib.h>
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#include <Library/PcdLib.h>
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#include <Ppi/Legacy8259.h>
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//
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// 8259 Hardware definitions
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//
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#define LEGACY_MODE_BASE_VECTOR_MASTER 0x08
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#define LEGACY_MODE_BASE_VECTOR_SLAVE 0x70
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#define PROTECTED_MODE_BASE_VECTOR_MASTER 0x68
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#define PROTECTED_MODE_BASE_VECTOR_SLAVE 0x70
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#define LEGACY_8259_CONTROL_REGISTER_MASTER 0x20
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#define LEGACY_8259_MASK_REGISTER_MASTER 0x21
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#define LEGACY_8259_CONTROL_REGISTER_SLAVE 0xA0
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#define LEGACY_8259_MASK_REGISTER_SLAVE 0xA1
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#define LEGACY_8259_EDGE_LEVEL_TRIGGERED_REGISTER_MASTER 0x4D0
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#define LEGACY_8259_EDGE_LEVEL_TRIGGERED_REGISTER_SLAVE 0x4D1
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#define LEGACY_8259_EOI 0x20
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//
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// Ppi Function Prototypes
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//
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/**
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Get the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for
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the legacy mode mask and the protected mode mask. The base address for the 8259
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is different for legacy and protected mode, so two masks are required.
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@param[in] This The PPI instance pointer.
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@param[in] MasterBase The base vector for the Master PIC in the 8259 controller.
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@param[in] SlaveBase The base vector for the Slave PIC in the 8259 controller.
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@retval EFI_SUCCESS The new bases were programmed.
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@retval EFI_DEVICE_ERROR A device error occured programming the vector bases.
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**/
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EFI_STATUS
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EFIAPI
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Interrupt8259SetVectorBase (
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IN H2O_LEGACY_8259_PPI *This,
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IN UINT8 MasterBase,
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IN UINT8 SlaveBase
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);
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/**
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Get the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for
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the legacy mode mask and the protected mode mask. The base address for the 8259
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is different for legacy and protected mode, so two masks are required.
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@param[in] This The PPI instance pointer.
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@param[out] LegacyMask Bit 0 is Irq0 - Bit 15 is Irq15.
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@param[out] LegacyEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15.
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@param[out] ProtectedMask Bit 0 is Irq0 - Bit 15 is Irq15.
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@param[out] ProtectedEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15.
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@retval EFI_SUCCESS 8259 status returned.
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@retval EFI_DEVICE_ERROR Error reading 8259.
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**/
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EFI_STATUS
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EFIAPI
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Interrupt8259GetMask (
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IN H2O_LEGACY_8259_PPI *This,
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OUT UINT16 *LegacyMask OPTIONAL,
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OUT UINT16 *LegacyEdgeLevel OPTIONAL,
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OUT UINT16 *ProtectedMask OPTIONAL,
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OUT UINT16 *ProtectedEdgeLevel OPTIONAL
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);
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/**
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Set the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for
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the legacy mode mask and the protected mode mask. The base address for the 8259
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is different for legacy and protected mode, so two masks are required.
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Also set the edge/level masks.
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@param[in] This The PPI instance pointer.
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@param[in] LegacyMask Bit 0 is Irq0 - Bit 15 is Irq15.
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@param[in] LegacyEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15.
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@param[in] ProtectedMask Bit 0 is Irq0 - Bit 15 is Irq15.
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@param[in] ProtectedEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15.
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@retval EFI_SUCCESS 8259 status returned.
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@retval EFI_DEVICE_ERROR Error writing 8259.
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**/
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EFI_STATUS
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EFIAPI
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Interrupt8259SetMask (
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IN H2O_LEGACY_8259_PPI *This,
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IN UINT16 *LegacyMask OPTIONAL,
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IN UINT16 *LegacyEdgeLevel OPTIONAL,
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IN UINT16 *ProtectedMask OPTIONAL,
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IN UINT16 *ProtectedEdgeLevel OPTIONAL
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);
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/**
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Set the 8259 mode of operation. The base address for the 8259 is different for
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legacy and protected mode. The legacy mode requires the master 8259 to have a
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master base of 0x08 and the slave base of 0x70. The protected mode base locations
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are not defined. Interrupts must be masked by the caller before this function
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is called. The interrupt mask from the current mode is saved. The interrupt
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mask for the new mode is Mask, or if Mask does not exist the previously saved
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mask is used.
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@param[in] This The PPI instance pointer.
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@param[in] Mode The mode of operation. i.e. the real mode or protected mode.
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@param[in] Mask Optional interupt mask for the new mode.
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@param[in] EdgeLevel Optional trigger mask for the new mode.
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@retval EFI_SUCCESS 8259 programmed.
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@retval EFI_DEVICE_ERROR Error writing to 8259.
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**/
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EFI_STATUS
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EFIAPI
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Interrupt8259SetMode (
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IN H2O_LEGACY_8259_PPI *This,
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IN EFI_8259_MODE Mode,
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IN UINT16 *Mask OPTIONAL,
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IN UINT16 *EdgeLevel OPTIONAL
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);
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/**
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Convert from IRQ to processor interrupt vector number.
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@param[in] This The PPI instance pointer.
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@param[in] Irq 8259 IRQ0 - IRQ15.
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@param[in] Vector The processor vector number that matches an Irq.
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@retval EFI_SUCCESS The Vector matching Irq is returned.
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@retval EFI_INVALID_PARAMETER The Irq not valid.
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**/
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EFI_STATUS
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EFIAPI
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Interrupt8259GetVector (
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IN H2O_LEGACY_8259_PPI *This,
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IN EFI_8259_IRQ Irq,
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OUT UINT8 *Vector
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);
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/**
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Enables the specified IRQ.
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@param[in] This The PPI instance pointer.
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@param[in] Irq IRQ0-IRQ15.
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@param[in] LevelTriggered 0 = Edge triggered; 1 = Level triggered.
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@retval EFI_SUCCESS The Irq was enabled on the 8259 PIC.
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@retval EFI_INVALID_PARAMETER The Irq is not valid.
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**/
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EFI_STATUS
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EFIAPI
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Interrupt8259EnableIrq (
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IN H2O_LEGACY_8259_PPI *This,
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IN EFI_8259_IRQ Irq,
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IN BOOLEAN LevelTriggered
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);
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/**
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Disables the specified IRQ.
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@param[in] This The PPI instance pointer.
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@param[in] Irq IRQ0-IRQ15.
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@retval EFI_SUCCESS The Irq was disabled on the 8259 PIC.
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@retval EFI_INVALID_PARAMETER The Irq is not valid.
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**/
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EFI_STATUS
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EFIAPI
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Interrupt8259DisableIrq (
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IN H2O_LEGACY_8259_PPI *This,
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IN EFI_8259_IRQ Irq
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);
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/**
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PciHandle represents a PCI config space of a PCI function. Vector
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represents Interrupt Pin (from PCI config space) and it is the data
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that is programmed into the Interrupt Line (from the PCI config space)
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register.
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@param[in] This The PPI instance pointer.
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@param[in] PciHandle The PCI function to return the vector for.
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@param[out] Vector The vector for the function it matches.
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@retval EFI_SUCCESS A valid Vector was returned.
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@retval EFI_INVALID_PARAMETER PciHandle not valid.
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**/
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EFI_STATUS
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EFIAPI
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Interrupt8259GetInterruptLine (
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IN H2O_LEGACY_8259_PPI *This,
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IN EFI_HANDLE PciHandle,
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OUT UINT8 *Vector
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);
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/**
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Issues the End of Interrupt (EOI) commands to PICs.
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@param[in] This The PPI instance pointer.
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@param[in] Irq The interrupt for which to issue the EOI command.
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@retval EFI_SUCCESS The EOI command was issued.
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@retval EFI_INVALID_PARAMETER The Irq is not valid.
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**/
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EFI_STATUS
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EFIAPI
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Interrupt8259EndOfInterrupt (
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IN H2O_LEGACY_8259_PPI *This,
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IN EFI_8259_IRQ Irq
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);
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#endif
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