VOID
XenUsb_EvtChildListScanForChildren(WDFCHILDLIST child_list) {
NTSTATUS status;
PXENUSB_DEVICE_DATA xudd = GetXudd(WdfChildListGetDevice(child_list));
XENUSB_PDO_IDENTIFICATION_DESCRIPTION child_description;
CHAR path[128];
PCHAR value;
ULONG i;
FUNCTION_ENTER();
WdfChildListBeginScan(child_list);
// hold the queue on each device and set each device to a pending state
// read backend/num_ports
//RtlStringCbPrintfA(path, ARRAY_SIZE(path), "%s/num-ports", xudd->vectors.backend_path);
status = XnReadString(xudd->handle, XBT_NIL, path, &value);
if (status != STATUS_SUCCESS) {
WdfChildListEndScan(child_list);
FUNCTION_MSG("Failed to read num-ports\n");
return;
}
xudd->num_ports = (ULONG)parse_numeric_string(value);
XnFreeMem(xudd->handle, value);
FUNCTION_MSG("num-ports = %d\n", xudd->num_ports);
for (i = 0; i < 8; i++) {
xudd->ports[i].port_number = i + 1;
xudd->ports[i].port_type = USB_PORT_TYPE_NOT_CONNECTED;
xudd->ports[i].port_status = 0; //1 << PORT_ENABLE;
xudd->ports[i].port_change = 0x0000;
}
/* only a single root hub is enumerated */
WDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER_INIT(&child_description.header, sizeof(child_description));
child_description.device_number = 0; //TODO: get the proper index from parent
status = WdfChildListAddOrUpdateChildDescriptionAsPresent(child_list, &child_description.header, NULL);
if (!NT_SUCCESS(status)) {
FUNCTION_MSG("WdfChildListAddOrUpdateChildDescriptionAsPresent failed with status 0x%08x\n", status);
}
WdfChildListEndScan(child_list);
FUNCTION_EXIT();
}
VOID
VIOSerialAddPort(
IN WDFDEVICE Device,
IN ULONG id
)
{
VIOSERIAL_PORT port;
PPORTS_DEVICE pContext = GetPortsDevice(Device);
NTSTATUS status = STATUS_SUCCESS;
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,"%s DeviceId = %d :: PortId = %d\n", __FUNCTION__, pContext->DeviceId, id);
WDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER_INIT(
&port.Header,
sizeof(port)
);
port.PortId = id;
port.DeviceId = pContext->DeviceId;
port.NameString.Buffer = NULL;
port.NameString.Length = 0;
port.NameString.MaximumLength = 0;
port.InBuf = NULL;
port.HostConnected = port.GuestConnected = FALSE;
port.OutVqFull = FALSE;
port.Removed = FALSE;
port.BusDevice = Device;
status = WdfChildListAddOrUpdateChildDescriptionAsPresent(
WdfFdoGetDefaultChildList(Device),
&port.Header,
NULL
);
if (status == STATUS_OBJECT_NAME_EXISTS)
{
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,
"The description is already present in the list, the serial number is not unique.\n");
return;
}
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,
"WdfChildListAddOrUpdateChildDescriptionAsPresent = 0x%x.\n", status);
}
NTSTATUS
Bus_PlugInDevice(
_In_ WDFDEVICE Device,
_In_ PWCHAR HardwareIds,
_In_ size_t CchHardwareIds,
_In_ ULONG SerialNo
)
/*++
Routine Description:
The user application has told us that a new device on the bus has arrived.
We therefore create a description structure in stack, fill in information about
the child device and call WdfChildListAddOrUpdateChildDescriptionAsPresent
to add the device.
--*/
{
PDO_IDENTIFICATION_DESCRIPTION description;
NTSTATUS status;
PAGED_CODE ();
//
// Initialize the description with the information about the newly
// plugged in device.
//
WDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER_INIT(
&description.Header,
sizeof(description)
);
description.SerialNo = SerialNo;
description.CchHardwareIds = CchHardwareIds;
description.HardwareIds = HardwareIds;
//
// Call the framework to add this child to the childlist. This call
// will internaly call our DescriptionCompare callback to check
// whether this device is a new device or existing device. If
// it's a new device, the framework will call DescriptionDuplicate to create
// a copy of this description in nonpaged pool.
// The actual creation of the child device will happen when the framework
// receives QUERY_DEVICE_RELATION request from the PNP manager in
// response to InvalidateDeviceRelations call made as part of adding
// a new child.
//
status = WdfChildListAddOrUpdateChildDescriptionAsPresent(
WdfFdoGetDefaultChildList(Device), &description.Header,
NULL); // AddressDescription
if (status == STATUS_OBJECT_NAME_EXISTS) {
//
// The description is already present in the list, the serial number is
// not unique, return error.
//
status = STATUS_INVALID_PARAMETER;
}
return status;
}
VOID
OsrFxEnumerateChildren(
_In_ WDFDEVICE Device
)
/*++
Routine Description:
This routine configures a continuous reader on the
interrupt endpoint.
Arguments:
Return Value:
NT status value
--*/
{
WDFCHILDLIST list;
UCHAR i;
NTSTATUS status;
PDEVICE_CONTEXT pDeviceContext;
pDeviceContext = GetDeviceContext(Device);
list = WdfFdoGetDefaultChildList(Device);
WdfChildListBeginScan(list);
//
// A call to WdfChildListBeginScan indicates to the framework that the
// driver is about to scan for dynamic children. If the driver doesn't
// call either WdfChildListUpdateChildDescriptionAsPresent or
// WdfChildListMarkAllChildDescriptionsPresent before WdfChildListEndScan is,
// called, all the previously reported children will be reported as missing
// to the PnP subsystem.
//
for(i=0; i< RTL_BITS_OF(UCHAR); i++) {
//
// Report every set bit in the switchstate as a child device.
//
if(pDeviceContext->CurrentSwitchState & (1<<i)) {
PDO_IDENTIFICATION_DESCRIPTION description;
//
// Initialize the description with the information about the newly
// plugged in device.
//
WDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER_INIT(
&description.Header,
sizeof(description)
);
//
// Since switches are marked in the wrong order on the board,
// we will fix it here so that the DM display matches with the
// board.
//
description.SwitchNumber = RTL_BITS_OF(UCHAR)-i;
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,
"Switch %d is ON\n", description.SwitchNumber);
//
// Call the framework to add this child to the devicelist. This call
// will internaly call our DescriptionCompare callback to check
// whether this device is a new device or existing device. If
// it's a new device, the framework will call DescriptionDuplicate to create
// a copy of this description in nonpaged pool.
// The actual creation of the child device will happen when the framework
// receives QUERY_DEVICE_RELATION request from the PNP manager in
// response to InvalidateDevice relation call made as part of adding
// a new child.
//
status = WdfChildListAddOrUpdateChildDescriptionAsPresent(
list,
&description.Header,
NULL); // AddressDescription
if (status == STATUS_OBJECT_NAME_EXISTS) {
}
}
}
WdfChildListEndScan(list);
return;
}
