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471 lines
11 KiB
471 lines
11 KiB
/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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spsysbus.c
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Abstract:
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Author:
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Environment:
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Revision History:
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--*/
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#include "halp.h"
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#include "spmp.inc"
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ULONG HalpDefaultInterruptAffinity;
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ULONG HalpCpuCount;
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BOOLEAN
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HalpTranslateSystemBusAddress(
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IN PBUS_HANDLER BusHandler,
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IN PBUS_HANDLER RootHandler,
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IN PHYSICAL_ADDRESS BusAddress,
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IN OUT PULONG AddressSpace,
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OUT PPHYSICAL_ADDRESS TranslatedAddress
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);
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ULONG
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HalpGetSystemInterruptVector(
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IN PBUS_HANDLER BusHandler,
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IN PBUS_HANDLER RootHandler,
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IN ULONG BusInterruptLevel,
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IN ULONG BusInterruptVector,
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OUT PKIRQL Irql,
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OUT PKAFFINITY Affinity
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);
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE,HalpGetSystemInterruptVector)
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#pragma alloc_text(PAGE,HalTranslatorReference)
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#pragma alloc_text(PAGE,HalTranslatorDereference)
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#pragma alloc_text(PAGE,HalIrqTranslateResourcesRoot)
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#pragma alloc_text(PAGE,HalIrqTranslateResourceRequirementsRoot)
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#pragma alloc_text(PAGE,HalpTransMemIoResource)
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#pragma alloc_text(PAGE,HalpTransMemIoResourceRequirement)
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#endif
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extern UCHAR SpCpuCount;
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extern Sp8259PerProcessorMode;
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extern UCHAR RegisteredProcessorCount;
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BOOLEAN
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HalpTranslateSystemBusAddress(
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IN PBUS_HANDLER BusHandler,
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IN PBUS_HANDLER RootHandler,
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IN PHYSICAL_ADDRESS BusAddress,
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IN OUT PULONG AddressSpace,
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OUT PPHYSICAL_ADDRESS TranslatedAddress
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)
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/*++
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Routine Description:
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This function translates a bus-relative address space and address into
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a system physical address.
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Arguments:
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BusAddress - Supplies the bus-relative address
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AddressSpace - Supplies the address space number.
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Returns the host address space number.
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AddressSpace == 0 => memory space
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AddressSpace == 1 => I/O space
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TranslatedAddress - Supplies a pointer to return the translated address
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Return Value:
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A return value of TRUE indicates that a system physical address
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corresponding to the supplied bus relative address and bus address
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number has been returned in TranslatedAddress.
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A return value of FALSE occurs if the translation for the address was
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not possible
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--*/
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{
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PSUPPORTED_RANGE pRange;
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pRange = NULL;
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switch (*AddressSpace) {
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case 0:
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// verify memory address is within buses memory limits
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for (pRange = &BusHandler->BusAddresses->PrefetchMemory; pRange; pRange = pRange->Next) {
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if (BusAddress.QuadPart >= pRange->Base &&
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BusAddress.QuadPart <= pRange->Limit) {
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break;
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}
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}
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if (!pRange) {
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for (pRange = &BusHandler->BusAddresses->Memory; pRange; pRange = pRange->Next) {
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if (BusAddress.QuadPart >= pRange->Base &&
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BusAddress.QuadPart <= pRange->Limit) {
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break;
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}
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}
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}
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break;
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case 1:
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// verify IO address is within buses IO limits
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for (pRange = &BusHandler->BusAddresses->IO; pRange; pRange = pRange->Next) {
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if (BusAddress.QuadPart >= pRange->Base &&
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BusAddress.QuadPart <= pRange->Limit) {
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break;
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}
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}
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break;
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}
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if (pRange) {
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TranslatedAddress->QuadPart = BusAddress.QuadPart + pRange->SystemBase;
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*AddressSpace = pRange->SystemAddressSpace;
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return TRUE;
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}
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return FALSE;
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}
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ULONG
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HalpGetSystemInterruptVector(
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IN PBUS_HANDLER BusHandler,
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IN PBUS_HANDLER RootHandler,
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IN ULONG BusInterruptLevel,
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IN ULONG BusInterruptVector,
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OUT PKIRQL pIrql,
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OUT PKAFFINITY pAffinity
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)
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/*++
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Routine Description:
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Arguments:
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BusInterruptLevel - Supplies the bus specific interrupt level.
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BusInterruptVector - Supplies the bus specific interrupt vector.
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Irql - Returns the system request priority.
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Affinity - Returns the system wide irq affinity.
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Return Value:
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Returns the system interrupt vector corresponding to the specified device.
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--*/
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{
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ULONG SystemVector;
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ULONG Cpu;
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ULONG Affinity;
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KIRQL Irql;
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UNREFERENCED_PARAMETER( BusHandler );
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UNREFERENCED_PARAMETER( RootHandler );
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UNREFERENCED_PARAMETER( BusInterruptVector );
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//
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// Set default SystemVector, IRQL & CPU
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//
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SystemVector = BusInterruptLevel + PRIMARY_VECTOR_BASE;
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Irql = (KIRQL)(HIGHEST_LEVEL_FOR_8259 + PRIMARY_VECTOR_BASE - SystemVector);
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Cpu = 0;
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if (SystemVector < PRIMARY_VECTOR_BASE ||
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SystemVector > PRIMARY_VECTOR_BASE + HIGHEST_LEVEL_FOR_8259 ||
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HalpIDTUsageFlags[SystemVector].Flags & IDTOwned ) {
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//
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// This is an illegal BusInterruptVector and cannot be connected.
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//
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return(0);
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}
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//
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// If this is machine has reported SMP Dev Ints then lets
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// use them in a static interrupt distribution method.
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// Notice some devices are kept on P0 for compatibility.
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// These interrupts and their devices are not generally used
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// for steady state operations.
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//
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if (Sp8259PerProcessorMode & SP_SMPDEVINTS) {
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//
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// This is for overriding some devices that belong on P0.
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//
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switch (BusInterruptLevel) {
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case 1: // keyboard
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case 3: // com2
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case 4: // com1
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case 5: // SysMgmt Modem
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case 6: // floppy
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case 12: // mouse
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// use first cpu
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break;
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case 13: // Health (IPIs on all)
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// use first cpu, as:
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Irql = IPI_LEVEL;
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SystemVector = PRIMARY_VECTOR_BASE + SECOND_IPI_DISPATCH;
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break;
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default:
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Cpu = SystemVector % HalpCpuCount;
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break;
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}
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}
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//
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// Get Affinity for Cpu
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//
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Affinity = 1 << Cpu;
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ASSERT (Affinity);
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//
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// Done
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//
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*pAffinity = Affinity;
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*pIrql = Irql;
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return SystemVector;
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}
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NTSTATUS
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HalIrqTranslateResourceRequirementsRoot(
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IN PVOID Context,
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IN PIO_RESOURCE_DESCRIPTOR Source,
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IN PDEVICE_OBJECT PhysicalDeviceObject,
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OUT PULONG TargetCount,
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OUT PIO_RESOURCE_DESCRIPTOR *Target
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)
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/*++
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Routine Description:
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This function takes an IO_RESOURCE_DESCRIPTOR and translates
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it from an IO-bus-relative to a Processor-bus-relative form. In this
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x86-specific example, an IO-bus-relative form is the ISA IRQ and the
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Processor-bus-relative form is the IDT entry and the associated IRQL.
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This is essentially a PnP form of HalGetInterruptVector.
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Arguments:
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Context - unused
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Source - descriptor that we are translating
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PhysicalDeviceObject- unused
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TargetCount - 1
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Target - translated descriptor
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Return Value:
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status
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--*/
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{
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS
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HalIrqTranslateResourcesRoot(
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IN PVOID Context,
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IN PCM_PARTIAL_RESOURCE_DESCRIPTOR Source,
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IN RESOURCE_TRANSLATION_DIRECTION Direction,
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IN ULONG AlternativesCount, OPTIONAL
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IN IO_RESOURCE_DESCRIPTOR Alternatives[], OPTIONAL
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IN PDEVICE_OBJECT PhysicalDeviceObject,
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OUT PCM_PARTIAL_RESOURCE_DESCRIPTOR Target
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)
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{
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS
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HalpTransMemIoResourceRequirement(
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IN PVOID Context,
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IN PIO_RESOURCE_DESCRIPTOR Source,
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IN PDEVICE_OBJECT PhysicalDeviceObject,
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OUT PULONG TargetCount,
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OUT PIO_RESOURCE_DESCRIPTOR *Target
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)
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/*++
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Routine Description:
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This routine translates memory and IO resource requirements.
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Parameters:
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Context - The context from the TRANSLATOR_INTERFACE
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Source - The interrupt requirement to translate
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PhysicalDeviceObject - The device requesting the resource
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TargetCount - Pointer to where to return the number of descriptors this
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requirement translates into
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Target - Pointer to where a pointer to a callee allocated buffer containing
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the translated descriptors should be placed.
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Return Value:
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STATUS_SUCCESS or an error status
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Note:
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We do not perform any translation.
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--*/
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{
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ASSERT(Source);
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ASSERT(Target);
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ASSERT(TargetCount);
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ASSERT(Source->Type == CmResourceTypeMemory ||
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Source->Type == CmResourceTypePort);
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//
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// Allocate space for the target
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//
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*Target = ExAllocatePoolWithTag(PagedPool,
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sizeof(IO_RESOURCE_DESCRIPTOR),
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' laH');
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if (!*Target) {
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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//
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// Copy the source to target and update the fields that have changed
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//
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**Target = *Source;
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*TargetCount = 1;
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return STATUS_SUCCESS;
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}
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NTSTATUS
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HalpTransMemIoResource(
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IN PVOID Context,
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IN PCM_PARTIAL_RESOURCE_DESCRIPTOR Source,
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IN RESOURCE_TRANSLATION_DIRECTION Direction,
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IN ULONG AlternativesCount, OPTIONAL
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IN IO_RESOURCE_DESCRIPTOR Alternatives[], OPTIONAL
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IN PDEVICE_OBJECT PhysicalDeviceObject,
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OUT PCM_PARTIAL_RESOURCE_DESCRIPTOR Target
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)
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/*++
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Routine Description:
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This routine translates memory and IO resources. On generic x86
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machines, such as those that use this HAL, there isn't actually
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any translation.
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Parameters:
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Context - The context from the TRANSLATOR_INTERFACE
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Source - The interrupt resource to translate
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Direction - The direction in relation to the Pnp device tree translation
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should occur in.
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AlternativesCount - The number of alternatives this resource was selected
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from.
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Alternatives - Array of alternatives this resource was selected from.
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PhysicalDeviceObject - The device requesting the resource
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Target - Pointer to a caller allocated buffer to hold the translted resource
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descriptor.
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Return Value:
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STATUS_SUCCESS or an error status
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--*/
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{
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NTSTATUS status;
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//
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// Copy the target to the source
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//
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*Target = *Source;
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switch (Direction) {
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case TranslateChildToParent:
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//
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// Make sure PnP knows it doesn't have to walk up the tree
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// translating at each point.
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//
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status = STATUS_TRANSLATION_COMPLETE;
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break;
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case TranslateParentToChild:
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//
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// We do not translate requirements so do nothing...
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//
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status = STATUS_SUCCESS;
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break;
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default:
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status = STATUS_INVALID_PARAMETER;
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}
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return status;
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}
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VOID
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HalTranslatorReference(
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PVOID Context
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)
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{
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return;
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}
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VOID
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HalTranslatorDereference(
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PVOID Context
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)
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{
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return;
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}
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