mirror of
https://github.com/reactos/reactos.git
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135 lines
3.1 KiB
C++
135 lines
3.1 KiB
C++
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/*
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* PROJECT: ReactOS Universal Serial Bus Bulk Enhanced Host Controller Interface
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: drivers/usb/usbohci/misc.cpp
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* PURPOSE: USB OHCI device driver.
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* PROGRAMMERS:
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* Michael Martin (michael.martin@reactos.org)
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* Johannes Anderwald (johannes.anderwald@reactos.org)
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*/
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#include "usbohci.h"
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//
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// driver verifier
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//
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IO_COMPLETION_ROUTINE SyncForwardIrpCompletionRoutine;
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NTSTATUS
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NTAPI
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SyncForwardIrpCompletionRoutine(
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PDEVICE_OBJECT DeviceObject,
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PIRP Irp,
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PVOID Context)
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{
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if (Irp->PendingReturned)
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{
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KeSetEvent((PKEVENT)Context, IO_NO_INCREMENT, FALSE);
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}
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return STATUS_MORE_PROCESSING_REQUIRED;
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}
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NTSTATUS
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NTAPI
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SyncForwardIrp(PDEVICE_OBJECT DeviceObject, PIRP Irp)
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{
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KEVENT Event;
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NTSTATUS Status;
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//
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// initialize event
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//
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KeInitializeEvent(&Event, NotificationEvent, FALSE);
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//
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// copy irp stack location
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//
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IoCopyCurrentIrpStackLocationToNext(Irp);
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//
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// set completion routine
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//
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IoSetCompletionRoutine(Irp, SyncForwardIrpCompletionRoutine, &Event, TRUE, TRUE, TRUE);
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//
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// call driver
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//
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Status = IoCallDriver(DeviceObject, Irp);
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//
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// check if pending
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//
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if (Status == STATUS_PENDING)
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{
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//
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// wait for the request to finish
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//
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KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
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//
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// copy status code
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//
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Status = Irp->IoStatus.Status;
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}
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//
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// done
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//
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return Status;
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}
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NTSTATUS
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NTAPI
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GetBusInterface(
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PDEVICE_OBJECT DeviceObject,
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PBUS_INTERFACE_STANDARD busInterface)
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{
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KEVENT Event;
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NTSTATUS Status;
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PIRP Irp;
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IO_STATUS_BLOCK IoStatus;
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PIO_STACK_LOCATION Stack;
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if ((!DeviceObject) || (!busInterface))
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return STATUS_UNSUCCESSFUL;
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KeInitializeEvent(&Event, NotificationEvent, FALSE);
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Irp = IoBuildSynchronousFsdRequest(IRP_MJ_PNP,
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DeviceObject,
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NULL,
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0,
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NULL,
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&Event,
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&IoStatus);
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if (Irp == NULL)
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{
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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Stack=IoGetNextIrpStackLocation(Irp);
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Stack->MajorFunction = IRP_MJ_PNP;
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Stack->MinorFunction = IRP_MN_QUERY_INTERFACE;
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Stack->Parameters.QueryInterface.Size = sizeof(BUS_INTERFACE_STANDARD);
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Stack->Parameters.QueryInterface.InterfaceType = (LPGUID)&GUID_BUS_INTERFACE_STANDARD;
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Stack->Parameters.QueryInterface.Version = 1;
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Stack->Parameters.QueryInterface.Interface = (PINTERFACE)busInterface;
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Stack->Parameters.QueryInterface.InterfaceSpecificData = NULL;
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Irp->IoStatus.Status=STATUS_NOT_SUPPORTED ;
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Status=IoCallDriver(DeviceObject, Irp);
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if (Status == STATUS_PENDING)
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{
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KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
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Status=IoStatus.Status;
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}
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return Status;
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}
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