interface.c File Reference

#include "isapnp.h"
#include <debug.h>

Include dependency graph for interface.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
NTSTATUS	IsaFdoQueryInterface (_In_ PISAPNP_FDO_EXTENSION FdoExt, _In_ PIO_STACK_LOCATION IrpSp)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 12 of file interface.c.

Function Documentation

IsaFdoQueryInterface()

NTSTATUS IsaFdoQueryInterface	(	_In_ PISAPNP_FDO_EXTENSION	FdoExt,
		_In_ PIO_STACK_LOCATION	IrpSp
	)

Definition at line 19 of file interface.c.

{
    PAGED_CODE();
 
    if (IsEqualGUIDAligned(IrpSp->Parameters.QueryInterface.InterfaceType,
                           &GUID_TRANSLATOR_INTERFACE_STANDARD))
    {
        NTSTATUS Status;
        CM_RESOURCE_TYPE ResourceType;
        ULONG ParentBusType, ParentBusNumber, Dummy;
 
        ResourceType = PtrToUlong(IrpSp->Parameters.QueryInterface.InterfaceSpecificData);
 
        if (IrpSp->Parameters.QueryInterface.Size < sizeof(TRANSLATOR_INTERFACE) ||
            ResourceType != CmResourceTypeInterrupt)
        {
            return STATUS_NOT_SUPPORTED;
        }
 
        Status = IoGetDeviceProperty(FdoExt->Pdo,
                                     DevicePropertyLegacyBusType,
                                     sizeof(ParentBusType),
                                     &ParentBusType,
                                     &Dummy);
        if (!NT_SUCCESS(Status))
        {
            DPRINT1("BusType request failed with status 0x%08lx\n", Status);
            return Status;
        }
 
        Status = IoGetDeviceProperty(FdoExt->Pdo,
                                     DevicePropertyBusNumber,
                                     sizeof(ParentBusNumber),
                                     &ParentBusNumber,
                                     &Dummy);
        if (!NT_SUCCESS(Status))
        {
            DPRINT1("BusNumber request failed with status 0x%08lx\n", Status);
            return Status;
        }
 
        return HalGetInterruptTranslator(ParentBusType,
                                         ParentBusNumber,
                                         Isa,
                                         IrpSp->Parameters.QueryInterface.Size,
                                         IrpSp->Parameters.QueryInterface.Version,
                                         (PTRANSLATOR_INTERFACE)IrpSp->
                                         Parameters.QueryInterface.Interface,
                                         &ParentBusNumber);
    }
 
    return STATUS_NOT_SUPPORTED;
}

Referenced by _Dispatch_type_(), and IsaFdoPnp().