?? testpnp.c
字號:
#include "usbdriver.h"
NTSTATUS PnpHandleStartDevice(IN PDEVICE_OBJECT fdo,IN PIRP Irp);
NTSTATUS ForwardAndWait(IN PDEVICE_OBJECT fdo,IN PIRP Irp);
NTSTATUS ForwardIrpComplete(IN PDEVICE_OBJECT fdo,
IN PIRP Irp,
IN PKEVENT pev);
NTSTATUS UsbStartDevice(IN PDEVICE_OBJECT fdo);
NTSTATUS UsbConfigureDevice(IN PDEVICE_OBJECT fdo);
NTSTATUS UsbSelectInterfaces(IN PDEVICE_OBJECT fdo,
IN PUSB_CONFIGURATION_DESCRIPTOR ConfigurationDescriptor,
IN PUSBD_INTERFACE_INFORMATION Interface);
NTSTATUS PnpHandleDefault(IN PDEVICE_OBJECT fdo,IN PIRP Irp);
NTSTATUS PnpHandleStopDevice(IN PDEVICE_OBJECT fdo);
NTSTATUS PnpHandleRemoveDevice(IN PDEVICE_OBJECT fdo,IN PIRP Irp);
NTSTATUS UsbRemoveDevice(IN PDEVICE_OBJECT fdo);
//
NTSTATUS TestAddDevice(IN PDRIVER_OBJECT DriverObject,
IN PDEVICE_OBJECT PhysicalDeviceObject)
{
NTSTATUS ntStatus = STATUS_SUCCESS;
WCHAR KernelDeviceNameBuffer[] = L"\\Device\\Ezusb-0";
UNICODE_STRING KernelDeviceNameUnicode;
WCHAR UserDeviceLinkBuffer[] = L"\\DosDevices\\Ezusb-0";
UNICODE_STRING UserDeviceLinkUnicode;
PDEVICE_OBJECT fdo = NULL;
PDEVICE_EXTENSION pdx;
RtlInitUnicodeString (&KernelDeviceNameUnicode,
KernelDeviceNameBuffer);
ntStatus = IoCreateDevice (DriverObject,
sizeof (DEVICE_EXTENSION),
&KernelDeviceNameUnicode,
FILE_DEVICE_UNKNOWN,
0,
FALSE,
&fdo);
if( !NT_SUCCESS(ntStatus))
return ntStatus;
RtlInitUnicodeString (&UserDeviceLinkUnicode,
UserDeviceLinkBuffer);
ntStatus = IoCreateSymbolicLink (&UserDeviceLinkUnicode,
&KernelDeviceNameUnicode);
pdx = (PDEVICE_EXTENSION) (fdo->DeviceExtension);
RtlCopyMemory(pdx->DeviceLinkName,
UserDeviceLinkBuffer,
sizeof(UserDeviceLinkBuffer));
pdx->OpenHandles = 0;
pdx->ConfigurationHandle = NULL;
pdx->DeviceDescriptor = NULL;
pdx->Interface = NULL;
fdo->Flags &= ~DO_DEVICE_INITIALIZING;
fdo->Flags |= DO_DIRECT_IO;
pdx->PhysicalDeviceObject=PhysicalDeviceObject;
pdx->LowerDeviceObject =
IoAttachDeviceToDeviceStack(fdo, PhysicalDeviceObject);
pdx->Usages = 1;
KeInitializeEvent(&pdx->evRemove,
NotificationEvent,
FALSE);
return ntStatus;
}
//
NTSTATUS TestPnpIrp(IN PDEVICE_OBJECT fdo, IN PIRP Irp)
{
NTSTATUS ntStatus=STATUS_SUCCESS;
PIO_STACK_LOCATION IrpStack;
PDEVICE_EXTENSION pdx = fdo->DeviceExtension;
ULONG MinorFunction;
if (!LockDevice(fdo))
return CompleteRequest(Irp, STATUS_DELETE_PENDING, 0);
IrpStack = IoGetCurrentIrpStackLocation (Irp);
MinorFunction = IrpStack->MinorFunction;
switch (MinorFunction)
{
case IRP_MN_START_DEVICE:
ntStatus = PnpHandleStartDevice(fdo,Irp);
break;
case IRP_MN_STOP_DEVICE:
PnpHandleDefault(fdo,Irp);
ntStatus = PnpHandleStopDevice(fdo);
break;
case IRP_MN_REMOVE_DEVICE:
ntStatus = PnpHandleRemoveDevice(fdo,Irp);
break;
case IRP_MN_QUERY_CAPABILITIES:
{
PDEVICE_CAPABILITIES pdc = IrpStack->Parameters.DeviceCapabilities.Capabilities;
if (pdc->Version < 1) {
ntStatus = PnpHandleDefault(fdo, Irp);
break;
}
ntStatus = ForwardAndWait(fdo, Irp);
if (NT_SUCCESS(ntStatus)) {
pdc = IrpStack->Parameters.DeviceCapabilities.Capabilities;
pdc->SurpriseRemovalOK = TRUE;
}
ntStatus = CompleteRequest(Irp, ntStatus, Irp->IoStatus.Information);
}
break;
default:
ntStatus = PnpHandleDefault(fdo, Irp);
}
if (MinorFunction != IRP_MN_REMOVE_DEVICE)
UnlockDevice(fdo);
return ntStatus;
}
//
BOOLEAN LockDevice(IN PDEVICE_OBJECT fdo)
{
PDEVICE_EXTENSION pdx = (PDEVICE_EXTENSION) fdo->DeviceExtension;
LONG usage = InterlockedIncrement(&pdx->Usages);
if (pdx->Removing) {
if (InterlockedDecrement(&pdx->Usages) == 0)
KeSetEvent(&pdx->evRemove, 0, FALSE);
return FALSE;
}
return TRUE;
}
//
void UnlockDevice(PDEVICE_OBJECT fdo)
{
PDEVICE_EXTENSION pdx;
LONG usage;
pdx = (PDEVICE_EXTENSION) fdo->DeviceExtension;
usage = InterlockedDecrement(&pdx->Usages);
if (usage == 0) {
KeSetEvent(&pdx->evRemove, 0, FALSE);
}
}
//
NTSTATUS CompleteRequest(IN PIRP Irp,
IN NTSTATUS status,
IN ULONG info)
{
Irp->IoStatus.Status = status;
Irp->IoStatus.Information = info;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return status;
}
//
NTSTATUS PnpHandleStartDevice(IN PDEVICE_OBJECT fdo,IN PIRP Irp)
{
NTSTATUS ntStatus;
ntStatus = ForwardAndWait(fdo, Irp);
if (!NT_SUCCESS(ntStatus))
return CompleteRequest(Irp, ntStatus, Irp->IoStatus.Information);
ntStatus = UsbStartDevice(fdo);
return CompleteRequest(Irp, ntStatus, 0);
}
//
NTSTATUS ForwardAndWait(IN PDEVICE_OBJECT fdo,IN PIRP Irp)
{
NTSTATUS ntStatus;
PDEVICE_EXTENSION pdx = (PDEVICE_EXTENSION) fdo->DeviceExtension;
KEVENT event;
KeInitializeEvent(&event, NotificationEvent, FALSE);
IoCopyCurrentIrpStackLocationToNext(Irp);
IoSetCompletionRoutine(Irp, (PIO_COMPLETION_ROUTINE)ForwardIrpComplete,
(PVOID) &event, TRUE, TRUE, TRUE);
ntStatus = IoCallDriver(pdx->LowerDeviceObject, Irp);
if (ntStatus == STATUS_PENDING) {
KeWaitForSingleObject(&event, Executive, KernelMode, FALSE, NULL);
ntStatus = Irp->IoStatus.Status;
}
return ntStatus;
}
//
NTSTATUS ForwardIrpComplete(IN PDEVICE_OBJECT fdo,
IN PIRP Irp,
IN PKEVENT pev)
{
KeSetEvent(pev, 0, FALSE);
return STATUS_MORE_PROCESSING_REQUIRED;
}
//
NTSTATUS UsbStartDevice(IN PDEVICE_OBJECT fdo)
{
NTSTATUS ntStatus;
PDEVICE_EXTENSION pdx;
PUSB_DEVICE_DESCRIPTOR deviceDescriptor = NULL;
PURB urb;
USHORT SizeUrb;
ULONG SizeDescriptor;
pdx = fdo->DeviceExtension;
SizeUrb=sizeof(struct _URB_CONTROL_DESCRIPTOR_REQUEST);
urb = ExAllocatePool( NonPagedPool,SizeUrb);
if (urb==NULL) return STATUS_NO_MEMORY;
SizeDescriptor = sizeof(USB_DEVICE_DESCRIPTOR);
deviceDescriptor = ExAllocatePool(NonPagedPool,SizeDescriptor);
if (deviceDescriptor==NULL) {
ExFreePool(urb);
return STATUS_NO_MEMORY;
}
UsbBuildGetDescriptorRequest(urb,
SizeUrb,
USB_DEVICE_DESCRIPTOR_TYPE,
0,
0,
deviceDescriptor,
NULL,
SizeDescriptor,
NULL);
ntStatus = UsbCallUSBDI(fdo, urb);
if (NT_SUCCESS(ntStatus)) {
pdx->DeviceDescriptor = deviceDescriptor;
pdx->Stop = FALSE;
}
else {
ExFreePool(deviceDescriptor);
pdx->DeviceDescriptor = NULL;
}
ExFreePool(urb);
if (NT_SUCCESS(ntStatus)) {
ntStatus = UsbConfigureDevice(fdo);
}
return ntStatus;
}
//
NTSTATUS UsbCallUSBDI(IN PDEVICE_OBJECT fdo,IN PURB Urb)
{
NTSTATUS ntStatus, status = STATUS_SUCCESS;
PDEVICE_EXTENSION pdx;
PIRP irp;
KEVENT event;
IO_STATUS_BLOCK ioStatus;
PIO_STACK_LOCATION nextStack;
pdx = fdo->DeviceExtension;
KeInitializeEvent(&event, NotificationEvent, FALSE);
irp = IoBuildDeviceIoControlRequest(
IOCTL_INTERNAL_USB_SUBMIT_URB,
pdx->LowerDeviceObject,
NULL,
0,
NULL,
0,
TRUE,
&event,
&ioStatus);
nextStack = IoGetNextIrpStackLocation(irp);
nextStack->Parameters.Others.Argument1 = Urb;
ntStatus = IoCallDriver(pdx->LowerDeviceObject,irp);
if (ntStatus == STATUS_PENDING) {
KeWaitForSingleObject(&event,Suspended,KernelMode,FALSE,NULL);
ntStatus=ioStatus.Status;
}
if (NT_SUCCESS(ntStatus)) {
if (!(USBD_SUCCESS(Urb->UrbHeader.Status)))
ntStatus = STATUS_UNSUCCESSFUL;
}
return ntStatus;
}
//
NTSTATUS UsbConfigureDevice(IN PDEVICE_OBJECT fdo)
{
NTSTATUS ntStatus;
PDEVICE_EXTENSION pdx;
PURB urb = NULL;
USHORT SizeUrb;
ULONG SizeDescriptor;
PUSB_CONFIGURATION_DESCRIPTOR configurationDescriptor = NULL;
pdx = fdo->DeviceExtension;
SizeUrb = sizeof(struct _URB_CONTROL_DESCRIPTOR_REQUEST);
urb = ExAllocatePool(NonPagedPool,SizeUrb);
if (urb == NULL) return STATUS_NO_MEMORY;
SizeDescriptor=sizeof(USB_CONFIGURATION_DESCRIPTOR) + 16;
configurationDescriptor = ExAllocatePool(NonPagedPool, SizeDescriptor);
if (configurationDescriptor == NULL) {
ExFreePool(urb);
return STATUS_NO_MEMORY;
}
UsbBuildGetDescriptorRequest(urb,
SizeUrb,
USB_CONFIGURATION_DESCRIPTOR_TYPE,
0,
0,
configurationDescriptor,
NULL,
SizeDescriptor,
NULL);
ntStatus = UsbCallUSBDI(fdo, urb);
if (!NT_SUCCESS(ntStatus)) {
ExFreePool(urb);
ExFreePool(configurationDescriptor);
return ntStatus;
}
SizeDescriptor = configurationDescriptor->wTotalLength + 16;
ExFreePool(configurationDescriptor);
configurationDescriptor = NULL;
configurationDescriptor = ExAllocatePool(NonPagedPool, SizeDescriptor);
if (configurationDescriptor == NULL) {
ExFreePool(urb);
return STATUS_NO_MEMORY;
}
UsbBuildGetDescriptorRequest(urb,
SizeUrb,
USB_CONFIGURATION_DESCRIPTOR_TYPE,
0,
0,
configurationDescriptor,
NULL,
SizeDescriptor,
NULL);
ntStatus = UsbCallUSBDI(fdo, urb);
if (!NT_SUCCESS(ntStatus)) {
ExFreePool(urb);
ExFreePool(configurationDescriptor);
return ntStatus;
}
if (configurationDescriptor) {
ntStatus = UsbSelectInterfaces(fdo,
configurationDescriptor,
NULL
);
}
ExFreePool(urb);
ExFreePool(configurationDescriptor);
return ntStatus;
}
//
NTSTATUS UsbSelectInterfaces(IN PDEVICE_OBJECT fdo,
IN PUSB_CONFIGURATION_DESCRIPTOR ConfigurationDescriptor,
IN PUSBD_INTERFACE_INFORMATION Interface)
{
NTSTATUS ntStatus;
PDEVICE_EXTENSION pdx;
PURB urb;
ULONG i;
UCHAR alternateSetting, MyInterfaceNumber;
PUSBD_INTERFACE_INFORMATION interfaceObject;
USBD_INTERFACE_LIST_ENTRY interfaceList[2];
pdx = fdo->DeviceExtension;
MyInterfaceNumber = 0;
alternateSetting = 0;
interfaceList[0].InterfaceDescriptor = USBD_ParseConfigurationDescriptor(ConfigurationDescriptor,
MyInterfaceNumber,
alternateSetting);
interfaceList[1].InterfaceDescriptor = NULL;
interfaceList[1].Interface = NULL;
urb = USBD_CreateConfigurationRequestEx(ConfigurationDescriptor,&interfaceList[0]);
interfaceObject = (PUSBD_INTERFACE_INFORMATION) (&(urb->UrbSelectConfiguration.Interface));
for (i=0; i<interfaceList[0].InterfaceDescriptor->bNumEndpoints; i++)
interfaceObject->Pipes[i].MaximumTransferSize = (64 * 1024) - 1;
ntStatus = UsbCallUSBDI(fdo, urb);
if (NT_SUCCESS(ntStatus) && USBD_SUCCESS(urb->UrbHeader.Status)) {
pdx->ConfigurationHandle =
urb->UrbSelectConfiguration.ConfigurationHandle;
pdx->Interface = ExAllocatePool(NonPagedPool,
interfaceObject->Length);
RtlCopyMemory(pdx->Interface, interfaceObject, interfaceObject->Length);
}
return ntStatus;
}
//
NTSTATUS PnpHandleDefault(IN PDEVICE_OBJECT fdo,IN PIRP Irp)
{
PDEVICE_EXTENSION pdx;
pdx = (PDEVICE_EXTENSION) fdo->DeviceExtension;
IoSkipCurrentIrpStackLocation(Irp);
return IoCallDriver(pdx->LowerDeviceObject, Irp);
}
//
NTSTATUS PnpHandleStopDevice(IN PDEVICE_OBJECT fdo)
{
NTSTATUS ntStatus;
PDEVICE_EXTENSION pdx;
PURB urb;
ULONG size;
pdx = fdo->DeviceExtension;
size = sizeof(struct _URB_SELECT_CONFIGURATION);
urb = ExAllocatePool(NonPagedPool,size);
if (urb==NULL) return STATUS_NO_MEMORY;
UsbBuildSelectConfigurationRequest(urb,
(USHORT)size,
NULL);
ntStatus = UsbCallUSBDI(fdo, urb);
ExFreePool(urb);
return ntStatus;
}
//
NTSTATUS PnpHandleRemoveDevice(IN PDEVICE_OBJECT fdo,IN PIRP Irp)
{
NTSTATUS ntStatus;
PDEVICE_EXTENSION pdx;
pdx = (PDEVICE_EXTENSION) fdo->DeviceExtension;
pdx->Removing = TRUE;
UnlockDevice(fdo);
UnlockDevice(fdo);
KeWaitForSingleObject(&pdx->evRemove, Executive, KernelMode, FALSE, NULL);
UsbRemoveDevice(fdo);
ntStatus = PnpHandleDefault(fdo, Irp);
return ntStatus;
}
//
NTSTATUS UsbRemoveDevice(IN PDEVICE_OBJECT fdo)
{
NTSTATUS ntStatus = STATUS_SUCCESS;
PDEVICE_EXTENSION pdx;
UNICODE_STRING deviceLinkUnicodeString;
pdx = fdo->DeviceExtension;
if (pdx->DeviceDescriptor)
ExFreePool(pdx->DeviceDescriptor);
if (pdx->Interface != NULL)
ExFreePool(pdx->Interface);
RtlInitUnicodeString (&deviceLinkUnicodeString,
pdx->DeviceLinkName);
IoDeleteSymbolicLink(&deviceLinkUnicodeString);
IoDetachDevice(pdx->LowerDeviceObject);
IoDeleteDevice (fdo);
return ntStatus;
}
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