443 lines
9 KiB
C
443 lines
9 KiB
C
/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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ixbusdat.c
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Abstract:
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This module contains the IoXxx routines for the NT I/O system that
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are hardware dependent. Were these routines not hardware dependent,
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they would reside in the iosubs.c module.
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Author:
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Environment:
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Kernel mode
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Revision History:
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--*/
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#include "bootx86.h"
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#include "arc.h"
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#include "ixfwhal.h"
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#include "eisa.h"
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#include "ntconfig.h"
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ULONG
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HalpGetCmosData(
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IN ULONG BusNumber,
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IN ULONG SlotNumber,
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IN PVOID Buffer,
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IN ULONG Length
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);
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ULONG
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HalpGetEisaData(
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IN ULONG BusNumber,
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IN ULONG SlotNumber,
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IN PVOID Buffer,
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IN ULONG Offset,
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IN ULONG Length
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);
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ULONG
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HalpGetPCIData(
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IN ULONG BusNumber,
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IN ULONG SlotNumber,
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IN PVOID Buffer,
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IN ULONG Offset,
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IN ULONG Length
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);
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ULONG
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HalpSetPCIData(
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IN ULONG BusNumber,
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IN ULONG SlotNumber,
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IN PVOID Buffer,
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IN ULONG Offset,
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IN ULONG Length
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);
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NTSTATUS
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HalpAssignPCISlotResources (
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IN ULONG BusNumber,
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IN ULONG Slot,
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IN OUT PCM_RESOURCE_LIST *AllocatedResources
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);
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/*
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*
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* Router functions. Routes each call to specific handler
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*
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*/
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ULONG
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HalGetBusData(
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IN BUS_DATA_TYPE BusDataType,
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IN ULONG BusNumber,
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IN ULONG SlotNumber,
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IN PVOID Buffer,
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IN ULONG Length
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)
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{
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return HalGetBusDataByOffset (BusDataType,BusNumber,SlotNumber,Buffer,0,Length);
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}
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ULONG
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HalGetBusDataByOffset (
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IN BUS_DATA_TYPE BusDataType,
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IN ULONG BusNumber,
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IN ULONG Slot,
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IN PVOID Buffer,
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IN ULONG Offset,
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IN ULONG Length
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)
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/*++
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Routine Description:
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Dispatcher for GetBusData
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--*/
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{
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switch (BusDataType) {
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case Cmos:
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if (Offset != 0) {
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return 0;
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}
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return HalpGetCmosData(BusNumber, Slot, Buffer, Length);
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case EisaConfiguration:
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return HalpGetEisaData(BusNumber, Slot, Buffer, Offset, Length);
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case PCIConfiguration:
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return HalpGetPCIData(BusNumber, Slot, Buffer, Offset, Length);
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}
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return 0;
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}
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ULONG
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HalSetBusData(
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IN BUS_DATA_TYPE BusDataType,
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IN ULONG BusNumber,
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IN ULONG SlotNumber,
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IN PVOID Buffer,
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IN ULONG Length
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)
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{
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return HalSetBusDataByOffset (BusDataType,BusNumber,SlotNumber,Buffer,0,Length);
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}
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ULONG
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HalSetBusDataByOffset(
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IN BUS_DATA_TYPE BusDataType,
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IN ULONG BusNumber,
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IN ULONG Slot,
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IN PVOID Buffer,
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IN ULONG Offset,
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IN ULONG Length
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)
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/*++
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Routine Description:
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Dispatcher for SetBusData
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--*/
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{
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switch (BusDataType) {
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case PCIConfiguration:
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return HalpSetPCIData(BusNumber, Slot, Buffer, Offset, Length);
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}
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return 0;
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}
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NTSTATUS
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HalAssignSlotResources (
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IN PUNICODE_STRING RegistryPath,
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IN PUNICODE_STRING DriverClassName OPTIONAL,
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IN PDRIVER_OBJECT DriverObject,
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IN PDEVICE_OBJECT DeviceObject OPTIONAL,
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IN INTERFACE_TYPE BusType,
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IN ULONG BusNumber,
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IN ULONG SlotNumber,
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IN OUT PCM_RESOURCE_LIST *AllocatedResources
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)
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/*++
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Routine Description:
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Dispatcher for AssignSlotResources
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--*/
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{
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switch (BusType) {
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case PCIBus:
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return HalpAssignPCISlotResources (
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BusNumber,
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SlotNumber,
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AllocatedResources
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);
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default:
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break;
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}
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return STATUS_NOT_FOUND;
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}
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/**
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**
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** Standard PC bus functions
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**
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**/
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BOOLEAN
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HalTranslateBusAddress(
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IN INTERFACE_TYPE InterfaceType,
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IN ULONG BusNumber,
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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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BusNumber - Supplies the bus number. This is ignored on
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standard x86 systems
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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 => I/O space
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AddressSpace == 1 => memory space
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TranslatedAddress - Pointer to a physical_address.
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Return Value:
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System physical address corresponding to the supplied bus relative
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address and bus address number.
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--*/
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{
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TranslatedAddress->HighPart = 0;
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TranslatedAddress->LowPart = BusAddress.LowPart;
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return(TRUE);
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}
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ULONG
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HalpGetEisaData (
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IN ULONG BusNumber,
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IN ULONG SlotNumber,
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IN PVOID Buffer,
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IN ULONG Offset,
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IN ULONG Length
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)
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/*--
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Arguments:
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BusDataType - Supplies the type of bus.
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BusNumber - Indicates which bus.
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Buffer - Supplies the space to store the data.
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Length - Supplies a count in bytes of the maximum amount to return.
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Return Value:
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Returns the amount of data stored into the buffer.
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--*/
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{
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ULONG DataLength = 0;
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ULONG i;
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ULONG TotalDataSize;
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ULONG SlotDataSize;
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ULONG PartialCount;
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ULONG Index = 0;
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PUCHAR DataBuffer = Buffer;
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PCONFIGURATION_COMPONENT_DATA ConfigData;
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PCM_EISA_SLOT_INFORMATION SlotInformation;
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PCM_PARTIAL_RESOURCE_LIST Descriptor;
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PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialResource;
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BOOLEAN Found = FALSE;
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if (MachineType != MACHINE_TYPE_EISA) {
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return 0;
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}
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ConfigData = KeFindConfigurationEntry(
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FwConfigurationTree,
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AdapterClass,
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EisaAdapter,
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NULL
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);
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if (ConfigData == NULL) {
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DbgPrint("HalGetBusData: KeFindConfigurationEntry failed\n");
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return(0);
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}
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Descriptor = ConfigData->ConfigurationData;
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PartialResource = Descriptor->PartialDescriptors;
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PartialCount = Descriptor->Count;
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for (i = 0; i < PartialCount; i++) {
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//
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// Do each partial Resource
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//
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switch (PartialResource->Type) {
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case CmResourceTypeNull:
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case CmResourceTypePort:
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case CmResourceTypeInterrupt:
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case CmResourceTypeMemory:
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case CmResourceTypeDma:
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//
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// We dont care about these.
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//
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PartialResource++;
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break;
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case CmResourceTypeDeviceSpecific:
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//
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// Bingo!
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//
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TotalDataSize = PartialResource->u.DeviceSpecificData.DataSize;
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SlotInformation = (PCM_EISA_SLOT_INFORMATION)
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((PUCHAR)PartialResource +
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sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR));
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while (((LONG)TotalDataSize) > 0) {
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if (SlotInformation->ReturnCode == EISA_EMPTY_SLOT) {
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SlotDataSize = sizeof(CM_EISA_SLOT_INFORMATION);
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} else {
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SlotDataSize = sizeof(CM_EISA_SLOT_INFORMATION) +
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SlotInformation->NumberFunctions *
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sizeof(CM_EISA_FUNCTION_INFORMATION);
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}
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if (SlotDataSize > TotalDataSize) {
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//
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// Something is wrong again
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//
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DbgPrint("HalGetBusData: SlotDataSize > TotalDataSize\n");
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return(0);
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}
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if (SlotNumber != 0) {
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SlotNumber--;
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SlotInformation = (PCM_EISA_SLOT_INFORMATION)
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((PUCHAR)SlotInformation + SlotDataSize);
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TotalDataSize -= SlotDataSize;
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continue;
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}
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//
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// This is our slot
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//
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Found = TRUE;
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break;
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}
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//
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// End loop
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//
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i = PartialCount;
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break;
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default:
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#if DBG
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DbgPrint("Bad Data in registry!\n");
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#endif
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return(0);
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}
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}
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if (Found) {
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//
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// As a hack if the length is zero then the buffer points to a
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// PVOID where the pointer to the data should be stored. This is
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// done in the loader because we quickly run out of heap scaning
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// all of the EISA configuration data.
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//
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if (Length == 0) {
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//
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// Return the pointer to the mini-port driver.
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//
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*((PVOID *)Buffer) = SlotInformation;
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return(SlotDataSize);
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}
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i = Length + Offset;
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if (i > SlotDataSize) {
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i = SlotDataSize;
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}
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DataLength = i - Offset;
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RtlMoveMemory(Buffer, ((PUCHAR) SlotInformation + Offset), DataLength);
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}
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return(DataLength);
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}
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