115 lines
2 KiB
C
115 lines
2 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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mpirql.c
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Abstract:
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This module implements support for int<->vector translation.
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Author:
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Forrest Foltz (forrestf) 1-Dec-2000
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Environment:
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Kernel mode only.
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Revision History:
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--*/
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#include "halcmn.h"
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#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
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#define NUM_VECTORS 0x100
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typedef struct _VECTOR_INIT {
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ULONG Vector;
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KIRQL Irql;
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} VECTOR_INIT, *PVECTOR_INIT;
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VECTOR_INIT HalpVectorInit[] = {
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{ ZERO_VECTOR, 0 },
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{ APC_VECTOR, APC_LEVEL },
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{ DPC_VECTOR, DISPATCH_LEVEL },
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{ APIC_GENERIC_VECTOR, PROFILE_LEVEL },
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{ APIC_CLOCK_VECTOR, CLOCK_LEVEL },
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{ APIC_IPI_VECTOR, IPI_LEVEL },
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{ POWERFAIL_VECTOR, POWER_LEVEL }
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};
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//
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// HalpVectorToIRQL maps interrupt vectors to NT IRQLs
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//
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KIRQL HalpVectorToIRQL[NUM_VECTORS];
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//
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// HalpVectorToINTI maps interrupt vector to EISA interrupt level
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// on a per-node (cluster) basis. This can be thought of as a
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// two-dimensional array.
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//
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USHORT HalpVectorToINTI[MAX_NODES * NUM_VECTORS];
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VOID
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HalpInitializeIrqlTables (
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VOID
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)
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/*++
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Routine Description:
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This routine is responsible for initializing the HalpVectorToINTI[] and
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HalpVectorToIRQL[] tables, based on the contents of the HalpVectorInit[]
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array.
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Arguments:
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None.
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Return Value:
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None.
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--*/
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{
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ULONG count;
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PVECTOR_INIT vectorInit;
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//
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// Initialize every element of HalpVectorToINTI to 0xFFFF
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//
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for (count = 0; count < ARRAY_SIZE(HalpVectorToINTI); count++) {
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HalpVectorToINTI[count] = 0xFFFF;
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}
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//
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// Build HalpVectorToIrql based on the contents of HalpVectorInit.
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// Any unused entries are initialized to (KIRQL)0xFF.
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//
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for (count = 0; count < ARRAY_SIZE(HalpVectorToIRQL); count++) {
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HalpVectorToIRQL[count] = (KIRQL)0xFF;
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}
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for (count = 0; count < ARRAY_SIZE(HalpVectorInit); count++) {
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vectorInit = &HalpVectorInit[count];
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HalpVectorToIRQL[vectorInit->Vector] = vectorInit->Irql;
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}
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}
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