static NTSTATUS PciIdeXFdoQueryBusRelations	(	IN PDEVICE_OBJECT	DeviceObject,
		OUT PDEVICE_RELATIONS *	pDeviceRelations
	)		`[static]`
Definition at line 312 of file fdo.c.
Referenced by PciIdeXFdoPnpDispatch().
{
    PFDO_DEVICE_EXTENSION DeviceExtension;
    PDEVICE_RELATIONS DeviceRelations = NULL;
    PDEVICE_OBJECT Pdo;
    PPDO_DEVICE_EXTENSION PdoDeviceExtension;
    ULONG i, j;
    ULONG PDOs = 0;
    IDE_CHANNEL_STATE ChannelState;
    NTSTATUS Status;

    DeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
    ASSERT(DeviceExtension);
    ASSERT(DeviceExtension->Common.IsFDO);

    for (i = 0; i < MAX_IDE_CHANNEL; i++)
    {
        if (DeviceExtension->Pdo[i])
        {
            PDOs++;
            continue;
        }
        ChannelState = DeviceExtension->Properties.PciIdeChannelEnabled(
            DeviceExtension->MiniControllerExtension, i);
        if (ChannelState == ChannelDisabled)
        {
            DPRINT("Channel %lu is disabled\n", i);
            continue;
        }

        /* Need to create a PDO */
        Status = IoCreateDevice(
            DeviceObject->DriverObject,
            sizeof(PDO_DEVICE_EXTENSION),
            NULL,
            FILE_DEVICE_CONTROLLER,
            FILE_AUTOGENERATED_DEVICE_NAME,
            FALSE,
            &Pdo);
        if (!NT_SUCCESS(Status))
            /* FIXME: handle error */
            continue;

        PdoDeviceExtension = (PPDO_DEVICE_EXTENSION)Pdo->DeviceExtension;
        RtlZeroMemory(PdoDeviceExtension, sizeof(PDO_DEVICE_EXTENSION));
        PdoDeviceExtension->Common.IsFDO = FALSE;
        PdoDeviceExtension->Channel = i;
        PdoDeviceExtension->ControllerFdo = DeviceObject;
        Pdo->Flags |= DO_BUS_ENUMERATED_DEVICE;
        Pdo->Flags &= ~DO_DEVICE_INITIALIZING;

        DeviceExtension->Pdo[i] = Pdo;
        PDOs++;
    }

    if (PDOs == 0)
    {
        DeviceRelations = (PDEVICE_RELATIONS)ExAllocatePool(
            PagedPool,
            sizeof(DEVICE_RELATIONS));
    }
    else
    {
        DeviceRelations = (PDEVICE_RELATIONS)ExAllocatePool(
            PagedPool,
            sizeof(DEVICE_RELATIONS) + sizeof(PDEVICE_OBJECT) * (PDOs - 1));
    }
    if (!DeviceRelations)
        return STATUS_INSUFFICIENT_RESOURCES;

    DeviceRelations->Count = PDOs;
    for (i = 0, j = 0; i < MAX_IDE_CHANNEL; i++)
    {
        if (DeviceExtension->Pdo[i])
        {
            ObReferenceObject(DeviceExtension->Pdo[i]);
            DeviceRelations->Objects[j++] = DeviceExtension->Pdo[i];
        }
    }

    *pDeviceRelations = DeviceRelations;
    return STATUS_SUCCESS;
}
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