/*
 * PROJECT:     ReactOS Storport Driver
 * LICENSE:     GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
 * PURPOSE:     Storport helper functions
 * COPYRIGHT:   Copyright 2017 Eric Kohl (eric.kohl@reactos.org)
 */

/* INCLUDES *******************************************************************/

#include "precomp.h"

#define NDEBUG
#include <debug.h>


/* FUNCTIONS ******************************************************************/

static
NTSTATUS
NTAPI
ForwardIrpAndWaitCompletion(
    _In_ PDEVICE_OBJECT DeviceObject,
    _In_ PIRP Irp,
    _In_ PVOID Context)
{
    if (Irp->PendingReturned)
        KeSetEvent((PKEVENT)Context, IO_NO_INCREMENT, FALSE);
    return STATUS_MORE_PROCESSING_REQUIRED;
}


NTSTATUS
ForwardIrpAndWait(
    _In_ PDEVICE_OBJECT LowerDevice,
    _In_ PIRP Irp)
{
    KEVENT Event;
    NTSTATUS Status;

    ASSERT(LowerDevice);

    KeInitializeEvent(&Event, NotificationEvent, FALSE);
    IoCopyCurrentIrpStackLocationToNext(Irp);

    IoSetCompletionRoutine(Irp, ForwardIrpAndWaitCompletion, &Event, TRUE, TRUE, TRUE);

    Status = IoCallDriver(LowerDevice, Irp);
    if (Status == STATUS_PENDING)
    {
        Status = KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
        if (NT_SUCCESS(Status))
            Status = Irp->IoStatus.Status;
    }

    return Status;
}


NTSTATUS
NTAPI
ForwardIrpAndForget(
    _In_ PDEVICE_OBJECT LowerDevice,
    _In_ PIRP Irp)
{
    ASSERT(LowerDevice);

    IoSkipCurrentIrpStackLocation(Irp);
    return IoCallDriver(LowerDevice, Irp);
}


INTERFACE_TYPE
GetBusInterface(
    PDEVICE_OBJECT DeviceObject)
{
    GUID Guid;
    ULONG Length;
    NTSTATUS Status;

    Status = IoGetDeviceProperty(DeviceObject,
                                 DevicePropertyBusTypeGuid,
                                 sizeof(Guid),
                                 &Guid,
                                 &Length);
    if (!NT_SUCCESS(Status))
        return InterfaceTypeUndefined;

    if (RtlCompareMemory(&Guid, &GUID_BUS_TYPE_PCMCIA, sizeof(GUID)) == sizeof(GUID))
        return PCMCIABus;
    else if (RtlCompareMemory(&Guid, &GUID_BUS_TYPE_PCI, sizeof(GUID)) == sizeof(GUID))
        return PCIBus;
    else if (RtlCompareMemory(&Guid, &GUID_BUS_TYPE_ISAPNP, sizeof(GUID)) == sizeof(GUID))
        return PNPISABus;

    return InterfaceTypeUndefined;
}

/* EOF */