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https://github.com/reactos/reactos.git
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c2d0d784c7
- Create a branch to do a proper merge of USB work from a trunk base instead of from cmake-bringup - In the future, DO NOT under any circumstances branch another branch. This leads to merge problems! svn path=/branches/usb-bringup-trunk/; revision=55018
142 lines
3.1 KiB
C
142 lines
3.1 KiB
C
/*
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* PROJECT: ReactOS ISA PnP Bus driver
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* FILE: fdo.c
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* PURPOSE: FDO-specific code
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* PROGRAMMERS: Cameron Gutman (cameron.gutman@reactos.org)
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*/
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#include <isapnp.h>
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#define NDEBUG
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#include <debug.h>
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NTSTATUS
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NTAPI
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IsaFdoStartDevice(
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IN PISAPNP_FDO_EXTENSION FdoExt,
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IN PIRP Irp,
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IN PIO_STACK_LOCATION IrpSp)
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{
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NTSTATUS Status;
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KIRQL OldIrql;
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KeAcquireSpinLock(&FdoExt->Lock, &OldIrql);
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Status = IsaHwDetectReadDataPort(FdoExt);
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if (!NT_SUCCESS(Status))
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{
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KeReleaseSpinLock(&FdoExt->Lock, OldIrql);
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return Status;
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}
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FdoExt->Common.State = dsStarted;
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KeReleaseSpinLock(&FdoExt->Lock, OldIrql);
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return STATUS_SUCCESS;
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}
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NTSTATUS
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NTAPI
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IsaFdoQueryDeviceRelations(
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IN PISAPNP_FDO_EXTENSION FdoExt,
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IN PIRP Irp,
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IN PIO_STACK_LOCATION IrpSp)
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{
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NTSTATUS Status;
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PLIST_ENTRY CurrentEntry;
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PISAPNP_LOGICAL_DEVICE IsaDevice;
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PDEVICE_RELATIONS DeviceRelations;
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KIRQL OldIrql;
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ULONG i = 0;
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if (IrpSp->Parameters.QueryDeviceRelations.Type != BusRelations)
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return Irp->IoStatus.Status;
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KeAcquireSpinLock(&FdoExt->Lock, &OldIrql);
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Status = IsaHwFillDeviceList(FdoExt);
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if (!NT_SUCCESS(Status))
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{
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KeReleaseSpinLock(&FdoExt->Lock, OldIrql);
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return Status;
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}
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DeviceRelations = ExAllocatePool(NonPagedPool,
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sizeof(DEVICE_RELATIONS) + sizeof(DEVICE_OBJECT) * (FdoExt->DeviceCount - 1));
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if (!DeviceRelations)
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{
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KeReleaseSpinLock(&FdoExt->Lock, OldIrql);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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CurrentEntry = FdoExt->DeviceListHead.Flink;
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while (CurrentEntry != &FdoExt->DeviceListHead)
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{
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IsaDevice = CONTAINING_RECORD(CurrentEntry, ISAPNP_LOGICAL_DEVICE, ListEntry);
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DeviceRelations->Objects[i++] = IsaDevice->Common.Self;
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ObReferenceObject(IsaDevice->Common.Self);
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CurrentEntry = CurrentEntry->Flink;
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}
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DeviceRelations->Count = FdoExt->DeviceCount;
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KeReleaseSpinLock(&FdoExt->Lock, OldIrql);
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Irp->IoStatus.Information = (ULONG_PTR)DeviceRelations;
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return STATUS_SUCCESS;
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}
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NTSTATUS
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NTAPI
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IsaFdoPnp(
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IN PISAPNP_FDO_EXTENSION FdoExt,
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IN PIRP Irp,
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IN PIO_STACK_LOCATION IrpSp)
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{
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NTSTATUS Status = Irp->IoStatus.Status;
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switch (IrpSp->MinorFunction)
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{
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case IRP_MN_START_DEVICE:
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Status = IsaForwardIrpSynchronous(FdoExt, Irp);
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if (NT_SUCCESS(Status))
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Status = IsaFdoStartDevice(FdoExt, Irp, IrpSp);
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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case IRP_MN_STOP_DEVICE:
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FdoExt->Common.State = dsStopped;
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Status = STATUS_SUCCESS;
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break;
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case IRP_MN_QUERY_DEVICE_RELATIONS:
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Status = IsaFdoQueryDeviceRelations(FdoExt, Irp, IrpSp);
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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case IRP_MN_FILTER_RESOURCE_REQUIREMENTS:
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DPRINT("IRP_MN_FILTER_RESOURCE_REQUIREMENTS\n");
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break;
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default:
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DPRINT1("Unknown PnP code: %x\n", IrpSp->MinorFunction);
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break;
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}
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IoSkipCurrentIrpStackLocation(Irp);
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return IoCallDriver(FdoExt->Ldo, Irp);
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}
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