157 lines
3.1 KiB
C
157 lines
3.1 KiB
C
/*++
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Copyright (c) 1998 Microsoft Corporation
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Module Name:
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pciirqmp.h
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Abstract:
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This module contains support routines for the Pci Irq Routing.
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Author:
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Santosh Jodh (santoshj) 09-June-1998
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Environment:
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Kernel mode
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--*/
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#ifndef _PCIIRQMP_
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#define _PCIIRQMP_
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//
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// Standard Pci Irq miniport return values (source compatible with W9x).
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//
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typedef NTSTATUS PCIMPRET;
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#define PCIMP_SUCCESS STATUS_SUCCESS
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#define PCIMP_FAILURE STATUS_UNSUCCESSFUL
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#define PCIMP_INVALID_LINK STATUS_TOO_MANY_LINKS
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#define PCIMP_INVALID_IRQ STATUS_INVALID_PARAMETER
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#define PCIIRQMP_STATUS_NOT_INITIALIZED STATUS_UNSUCCESSFUL
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#define PCIIRQMP_STATUS_ALREADY_INITIALIZED STATUS_UNSUCCESSFUL
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#define PCIIRQMP_STATUS_NO_INSTANCE STATUS_UNSUCCESSFUL
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#define PCIIRQMP_STATUS_INVALID_INSTANCE STATUS_UNSUCCESSFUL
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#define PCIIRQMP_STATUS_INVALID_PARAMETER STATUS_UNSUCCESSFUL
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//
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// Define bits to describe source of routing table.
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//
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#define PCIMP_VALIDATE_SOURCE_BITS 1
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#define PCIMP_VALIDATE_SOURCE_PCIBIOS 1
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//
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// Chipset specific flags for individual workarounds.
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//
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// Bit 0: PCI devices cannot share interrupts.
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//
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#define PCIIR_FLAG_EXCLUSIVE 0x00000001
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//
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// Maximum number of interrupt pins possible on a single
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// Pci device (CS offset 3D).
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//
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#define NUM_IRQ_PINS 4
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//
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// Structure definitions for Pci Irq Routing.
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//
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#pragma pack(push, 1)
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//
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// Structure of information for one link.
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//
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typedef struct _PIN_INFO {
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UCHAR Link;
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USHORT InterruptMap;
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} PIN_INFO, *PPIN_INFO;
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//
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// Structure of information for one slot entry.
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//
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typedef struct _SLOT_INFO {
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UCHAR BusNumber;
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UCHAR DeviceNumber;
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PIN_INFO PinInfo[NUM_IRQ_PINS];
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UCHAR SlotNumber;
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UCHAR Reserved[1];
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} SLOT_INFO, *PSLOT_INFO;
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#pragma pack(pop)
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//
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// Structure of the $PIR table according to MS specification.
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//
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typedef struct _PCI_IRQ_ROUTING_TABLE {
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ULONG Signature;
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USHORT Version;
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USHORT TableSize;
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UCHAR RouterBus;
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UCHAR RouterDevFunc;
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USHORT ExclusiveIRQs;
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ULONG CompatibleRouter;
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ULONG MiniportData;
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UCHAR Reserved0[11];
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UCHAR Checksum;
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} PCI_IRQ_ROUTING_TABLE, *PPCI_IRQ_ROUTING_TABLE;
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//
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// Functions exported by Pci Irq Routing miniport library.
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//
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NTSTATUS
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PciirqmpInit (
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IN ULONG Instance,
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IN ULONG RouterBus,
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IN ULONG RouterDevFunc
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);
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NTSTATUS
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PciirqmpExit (
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VOID
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);
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NTSTATUS
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PciirqmpValidateTable (
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IN PPCI_IRQ_ROUTING_TABLE PciIrqRoutingTable,
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IN ULONG Flags
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);
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NTSTATUS
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PciirqmpGetIrq (
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OUT PUCHAR Irq,
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IN UCHAR Link
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);
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NTSTATUS
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PciirqmpSetIrq (
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IN UCHAR Irq,
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IN UCHAR Link
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);
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NTSTATUS
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PciirqmpGetTrigger (
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OUT PULONG Trigger
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);
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NTSTATUS
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PciirqmpSetTrigger (
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IN ULONG Trigger
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);
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#endif // _PCIIRQMP_
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