NT4/private/ntos/nthals/halsgi/mips/sxsysint.c
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/*++
Copyright (c) 1991 Microsoft Corporation
Copyright (c) 1992 Silicon Graphics, Inc.
Module Name:
s3sysint.c
Abstract:
This module implements the HAL procedures required to maintain
system interrupt processing for a SGI Indigo system.
Author:
David N. Cutler (davec) 6-May-1991
Kevin Meier (o-kevinm) 20-Jan-1992
Environment:
Kernel mode
Revision History:
--*/
#include "halp.h"
VOID
HalDisableSystemInterrupt (
IN ULONG Vector,
IN KIRQL Irql
)
/*++
Routine Description:
This routine disables the specified system interrupt.
N.B. This routine assumes that the caller has provided any required
synchronization to disable a system interrupt.
Arguments:
Vector - Supplies the vector of the system interrupt that is disabled.
Irql - Supplies the IRQL of the interrupting source.
Return Value:
None.
--*/
{
KIRQL OldIrql;
//
// Raise IRQL to the highest level.
//
KeRaiseIrql(HIGH_LEVEL, &OldIrql);
//
// This is a temp solution until these vectors can be obtained
// via the configuration manager. For now, these vectors are
// hardcoded in "sgidef.h".
//
switch( (UCHAR)Vector ){
//
// LOCAL0 vectors.
//
case SGI_VECTOR_GIO0FIFOFULL: // (0 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_IDEDMA: // (1 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_SCSI: // (2 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_ETHERNET: // (3 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_GRAPHICSDMA: // (4 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_SGIDUART: // (5 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_GIO1GE: // (6 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_VME0: // (7 + SGI_LOCAL0_VECTORS)
DISABLE_LOCAL0_IRQ( 1 << ((UCHAR)Vector - SGI_LOCAL0_VECTORS) );
break;
//
// LOCAL1 vectors.
//
case SGI_VECTOR_VME1: // (3 + SGI_LOCAL1_VECTORS)
case SGI_VECTOR_DSP: // (4 + SGI_LOCAL1_VECTORS)
case SGI_VECTOR_ACFAIL: // (5 + SGI_LOCAL1_VECTORS)
case SGI_VECTOR_VIDEOOPTION: // (6 + SGI_LOCAL1_VECTORS)
case SGI_VECTOR_GIO2VERTRET: // (7 + SGI_LOCAL1_VECTORS)
DISABLE_LOCAL1_IRQ( 1 << ((UCHAR)Vector - SGI_LOCAL1_VECTORS) );
break;
//
// Gets here when the disconnect interrupt routine is called
// for the second level dispatch routine (never)
//
case SGI_VECTOR_LOCAL0:
case SGI_VECTOR_LOCAL1:
break;
default:
DbgPrint("\nInvalid Vector (0x%x) passed.\n", (UCHAR)Vector);
DbgBreakPoint();
}// END SWITCH
//
// Lower IRQL to the previous level.
//
KeLowerIrql(OldIrql);
}
BOOLEAN
HalEnableSystemInterrupt (
IN ULONG Vector,
IN KIRQL Irql,
IN KINTERRUPT_MODE InterruptMode
)
/*++
Routine Description:
This routine enables the specified system interrupt.
N.B. This routine assumes that the caller has provided any required
synchronization to enable a system interrupt.
Arguments:
Vector - Supplies the vector of the system interrupt that is enabled.
Irql - Supplies the IRQL of the interrupting source.
InterruptMode - Supplies the mode of the interrupt; LevelSensitive or
Latched.
Return Value:
TRUE if the system interrupt was enabled
--*/
{
KIRQL OldIrql;
//
// Raise IRQL to the highest level.
//
KeRaiseIrql(HIGH_LEVEL, &OldIrql);
//
// This is a temp solution until these vectors can be obtained
// via the configuration manager. For now, these vectors are
// hardcoded in "sgidef.h".
//
switch( (UCHAR)Vector ){
//
// LOCAL0 vectors.
//
case SGI_VECTOR_GIO0FIFOFULL: // (0 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_IDEDMA: // (1 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_SCSI: // (2 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_ETHERNET: // (3 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_GRAPHICSDMA: // (4 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_SGIDUART: // (5 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_GIO1GE: // (6 + SGI_LOCAL0_VECTORS)
case SGI_VECTOR_VME0: // (7 + SGI_LOCAL0_VECTORS)
ENABLE_LOCAL0_IRQ( 1 << ((UCHAR)Vector - SGI_LOCAL0_VECTORS) );
break;
//
// LOCAL1 vectors.
//
case SGI_VECTOR_VME1: // (3 + SGI_LOCAL1_VECTORS)
case SGI_VECTOR_DSP: // (4 + SGI_LOCAL1_VECTORS)
case SGI_VECTOR_ACFAIL: // (5 + SGI_LOCAL1_VECTORS)
case SGI_VECTOR_VIDEOOPTION: // (6 + SGI_LOCAL1_VECTORS)
case SGI_VECTOR_GIO2VERTRET: // (7 + SGI_LOCAL1_VECTORS)
ENABLE_LOCAL1_IRQ( 1 << ((UCHAR)Vector - SGI_LOCAL1_VECTORS) );
break;
//
// Gets here when the connect interrupt routine is called
// for the second level dispatch routine (init only)
//
case SGI_VECTOR_LOCAL0:
case SGI_VECTOR_LOCAL1:
break;
default:
DbgPrint("\nHal: Invalid Vector (0x%x) passed.\n",(UCHAR)Vector);
DbgBreakPoint();
}// END SWITCH
//
// Lower IRQL to the previous level.
//
KeLowerIrql(OldIrql);
return TRUE;
}
ULONG
HalGetInterruptVector(
IN INTERFACE_TYPE InterfaceType,
IN ULONG BusNumber,
IN ULONG BusInterruptLevel,
IN ULONG BusInterruptVector,
OUT PKIRQL Irql,
OUT PKAFFINITY Affinity
)
/*++
Routine Description:
This function returns the system interrupt vector and IRQL level
corresponding to the specified bus interrupt level and/or vector. The
system interrupt vector and IRQL are suitable for use in a subsequent call
to KeInitializeInterrupt.
Arguments:
InterfaceType - Supplies the type of bus which the vector is for.
BusNumber - Supplies the bus number for the device.
BusInterruptLevel - Supplies the bus specific interrupt level.
BusInterruptVector - Supplies the bus specific interrupt vector.
Irql - Returns the system request priority.
Affinity - Returns the affinity for the requested vector
Return Value:
Returns the system interrupt vector corresponding to the specified device.
--*/
{
//
// Just return the passed parameters for now.
//
*Irql = (UCHAR)BusInterruptLevel;
*Affinity = 1;
return( BusInterruptVector );
}
VOID
HalRequestIpi(
IN ULONG Mask
)
/*++
Routine Description:
Requests an interprocessor interrupt
Arguments:
Mask - Supplies a mask of the processors to interrupt
Return Value:
None.
--*/
{
}