/*++
Copyright (c) 1989 Microsoft Corporation
Module Name:
ncrmcabus.c
Abstract:
Author:
Environment:
Revision History:
--*/
#include "halp.h"
ULONG
HalpGetMCAInterruptVector(
IN PBUS_HANDLER BusHandler,
IN PBUS_HANDLER RootHandler,
IN ULONG BusInterruptLevel,
IN ULONG BusInterruptVector,
OUT PKIRQL Irql,
OUT PKAFFINITY Affinity
);
ULONG
HalpGetSMCAInterruptVector(
IN PBUS_HANDLER BusHandler,
IN PBUS_HANDLER RootHandler,
IN ULONG BusInterruptLevel,
IN ULONG BusInterruptVector,
OUT PKIRQL Irql,
OUT PKAFFINITY Affinity
);
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE,HalpGetMCAInterruptVector)
#endif
ULONG
HalpGetMCAInterruptVector(
IN PBUS_HANDLER BusHandler,
IN PBUS_HANDLER RootHandler,
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:
BusHandle - Per bus specific structure
Irql - Returns the system request priority.
Affinity - Returns the system wide irq affinity.
Return Value:
Returns the system interrupt vector corresponding to the specified device.
--*/
{
UNREFERENCED_PARAMETER( BusInterruptVector );
//
// On standard PCs, IRQ 2 is the cascaded interrupt, and it really shows
// up on IRQ 9.
//
if (BusInterruptLevel == 2) {
BusInterruptLevel = 9;
}
if (BusInterruptLevel > 15) {
return 0;
}
//
// Get parent's translation from here..
//
// RMU
BusInterruptVector = BusInterruptLevel;
return BusHandler->ParentHandler->GetInterruptVector (
BusHandler->ParentHandler,
RootHandler,
BusInterruptLevel,
BusInterruptVector,
Irql,
Affinity
);
}
ULONG
HalpGetSMCAInterruptVector(
IN PBUS_HANDLER BusHandler,
IN PBUS_HANDLER RootHandler,
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:
BusHandle - Per bus specific structure
Irql - Returns the system request priority.
Affinity - Returns the system wide irq affinity.
Return Value:
Returns the system interrupt vector corresponding to the specified device.
--*/
{
UNREFERENCED_PARAMETER( BusInterruptVector );
//
// On standard PCs, IRQ 2 is the cascaded interrupt, and it really shows
// up on IRQ 9.
//
if (BusInterruptLevel == 2) {
BusInterruptLevel = 9;
}
if (BusInterruptLevel > 15) {
return 0;
}
//
// Get parent's translation from here..
//
// RMU
BusInterruptVector = BusInterruptLevel + 0x10;
return BusHandler->ParentHandler->GetInterruptVector (
BusHandler->ParentHandler,
RootHandler,
BusInterruptLevel,
BusInterruptVector,
Irql,
Affinity
);
}
BOOLEAN
HalpTranslateSMCBusAddress(
IN PBUS_HANDLER BusHandler,
IN PBUS_HANDLER RootHandler,
IN PHYSICAL_ADDRESS BusAddress,
IN OUT PULONG AddressSpace,
OUT PPHYSICAL_ADDRESS TranslatedAddress
)
/*++
Routine Description:
This function translates a SMC bus-relative address space and address into
a system physical address.
Arguments:
BusAddress - Supplies the bus-relative address
AddressSpace - Supplies the address space number.
Returns the host address space number.
AddressSpace == 0 => memory space
AddressSpace == 1 => I/O space
TranslatedAddress - Supplies a pointer to return the translated address
Return Value:
A return value of TRUE indicates that a system physical address
corresponding to the supplied bus relative address and bus address
number has been returned in TranslatedAddress.
A return value of FALSE occurs if the translation for the address was
not possible
--*/
{
UNREFERENCED_PARAMETER( BusHandler );
UNREFERENCED_PARAMETER( RootHandler );
if (BusAddress.HighPart != 0) {
// Unsupported range
return (FALSE);
}
switch (*AddressSpace) {
case 0: // MEMORY space
TranslatedAddress->LowPart = BusAddress.LowPart;
TranslatedAddress->HighPart = 0;
break;
case 1: // IO space
TranslatedAddress->LowPart = BusAddress.LowPart | 0x00010000;
TranslatedAddress->HighPart = 0;
break;
default: // UNKOWN address space
return FALSE;
}
return(TRUE);
}
