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/*++
Step2: This steps shows:
1) How to create a context with the WDFDEVICE object
2) How to initialize the USB device.
3) How to register an interface so that app can open
an handle to the device.
--*/
#include "ntddk.h"
#include "wdf.h"
#include "prototypes.h"
#include "usbdi.h"
#include "usbdlib.h"
#include "wdfusb.h"
#include "initguid.h"
DEFINE_GUID(GUID_DEVINTERFACE_OSRUSBFX2, // Generated using guidgen.exe
0x573e8c73, 0xcb4, 0x4471, 0xa1, 0xbf, 0xfa, 0xb2, 0x6c, 0x31, 0xd3, 0x84);
// {573E8C73-0CB4-4471-A1BF-FAB26C31D384}
typedef struct _DEVICE_CONTEXT {
WDFUSBDEVICE UsbDevice;
WDFUSBINTERFACE UsbInterface;
} DEVICE_CONTEXT, *PDEVICE_CONTEXT;
WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(DEVICE_CONTEXT, GetDeviceContext)
NTSTATUS
DriverEntry(
IN PDRIVER_OBJECT DriverObject,
IN PUNICODE_STRING RegistryPath
)
{
WDF_DRIVER_CONFIG config;
NTSTATUS status;
KdPrint(("DriverEntry of Step2\n"));
WDF_DRIVER_CONFIG_INIT(&config, EvtDeviceAdd);
status = WdfDriverCreate(DriverObject,
RegistryPath,
WDF_NO_OBJECT_ATTRIBUTES,
&config,
WDF_NO_HANDLE
);
if (!NT_SUCCESS(status)) {
KdPrint(("WdfDriverCreate failed 0x%x\n", status));
}
return status;
}
NTSTATUS
EvtDeviceAdd(
IN WDFDRIVER Driver,
IN PWDFDEVICE_INIT DeviceInit
)
{
WDF_OBJECT_ATTRIBUTES attributes;
NTSTATUS status;
WDFDEVICE device;
WDF_PNPPOWER_EVENT_CALLBACKS pnpPowerCallbacks;
UNREFERENCED_PARAMETER(Driver);
WDF_PNPPOWER_EVENT_CALLBACKS_INIT(&pnpPowerCallbacks);
pnpPowerCallbacks.EvtDevicePrepareHardware = EvtDevicePrepareHardware;
WdfDeviceInitSetPnpPowerEventCallbacks(DeviceInit, &pnpPowerCallbacks);
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&attributes, DEVICE_CONTEXT);
status = WdfDeviceCreate(&DeviceInit, &attributes, &device);
if (!NT_SUCCESS(status)) {
KdPrint(("WdfDeviceCreate failed 0x%x\n", status));
return status;
}
status = WdfDeviceCreateDeviceInterface(device,
(LPGUID) &GUID_DEVINTERFACE_OSRUSBFX2,
NULL);// Reference String
if (!NT_SUCCESS(status)) {
KdPrint(("WdfDeviceCreateDeviceInterface failed 0x%x\n", status));
return status;
}
return status;
}
NTSTATUS
EvtDevicePrepareHardware(
IN WDFDEVICE Device,
IN WDFCMRESLIST ResourceList,
IN WDFCMRESLIST ResourceListTranslated
)
{
NTSTATUS status;
PDEVICE_CONTEXT pDeviceContext;
WDF_USB_DEVICE_SELECT_CONFIG_PARAMS configParams;
UNREFERENCED_PARAMETER(ResourceList);
UNREFERENCED_PARAMETER(ResourceListTranslated);
pDeviceContext = GetDeviceContext(Device);
//
// Create the USB device if it is not already created.
//
if (pDeviceContext->UsbDevice == NULL) {
WDF_USB_DEVICE_CREATE_CONFIG config;
WDF_USB_DEVICE_CREATE_CONFIG_INIT(&config,
USBD_CLIENT_CONTRACT_VERSION_602);
status = WdfUsbTargetDeviceCreateWithParameters(Device,
&config,
WDF_NO_OBJECT_ATTRIBUTES,
&pDeviceContext->UsbDevice);
if (!NT_SUCCESS(status)) {
KdPrint(("WdfUsbTargetDeviceCreateWithParameters failed 0x%x\n", status));
return status;
}
}
WDF_USB_DEVICE_SELECT_CONFIG_PARAMS_INIT_SINGLE_INTERFACE(&configParams);
status = WdfUsbTargetDeviceSelectConfig(pDeviceContext->UsbDevice,
WDF_NO_OBJECT_ATTRIBUTES,
&configParams);
if(!NT_SUCCESS(status)) {
KdPrint(("WdfUsbTargetDeviceSelectConfig failed 0x%x\n", status));
return status;
}
pDeviceContext->UsbInterface =
configParams.Types.SingleInterface.ConfiguredUsbInterface;
return status;
}
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