[ros-diffs] [janderwald] 51489: [USBEHCI_NEW] - Implement SelectInterface / SelectConfiguration based on mjmartin usbehci driver - Initialization runs untill SelectInterface request - Tested with WinXP SP2

Author: janderwald
Date: Fri Apr 29 02:46:04 2011
New Revision: 51489

URL: http://svn.reactos.org/svn/reactos?rev=51489&view=rev
Log:
[USBEHCI_NEW]
- Implement SelectInterface / SelectConfiguration based on mjmartin usbehci driver
- Initialization runs untill SelectInterface request
- Tested with WinXP SP2

Modified:
    branches/usb-bringup/drivers/usb/usbehci_new/hub_controller.cpp
    branches/usb-bringup/drivers/usb/usbehci_new/interfaces.h
    branches/usb-bringup/drivers/usb/usbehci_new/usb_device.cpp
    branches/usb-bringup/drivers/usb/usbehci_new/usb_request.cpp

Modified: branches/usb-bringup/drivers/usb/usbehci_new/hub_controller.cpp
URL:
http://svn.reactos.org/svn/reactos/branches/usb-bringup/drivers/usb/usbehci…
==============================================================================
--- branches/usb-bringup/drivers/usb/usbehci_new/hub_controller.cpp [iso-8859-1]
(original)
+++ branches/usb-bringup/drivers/usb/usbehci_new/hub_controller.cpp [iso-8859-1] Fri Apr
29 02:46:04 2011
@@ -63,6 +63,7 @@
     NTSTATUS HandleClassDevice(IN OUT PIRP Irp, PURB Urb);
     NTSTATUS HandleGetStatusFromDevice(IN OUT PIRP Irp, PURB Urb);
     NTSTATUS HandleSelectConfiguration(IN OUT PIRP Irp, PURB Urb);
+    NTSTATUS HandleSelectInterface(IN OUT PIRP Irp, PURB Urb);
     NTSTATUS HandleClassOther(IN OUT PIRP Irp, PURB Urb);
     NTSTATUS HandleBulkOrInterruptTransfer(IN OUT PIRP Irp, PURB Urb);
     
@@ -936,29 +937,87 @@
     IN OUT PIRP Irp, 
     PURB Urb)
 {
-    //
-    // sanity checks
-    //
-
-    //
-    // FIXME: support devices
-    //
-    PC_ASSERT(Urb->UrbHeader.UsbdDeviceHandle == NULL); 
-
-    //
-    // FIXME: support setting device to unconfigured state
-    //
-    PC_ASSERT(Urb->UrbSelectConfiguration.ConfigurationDescriptor);
-
-    //
-    // set device handle
-    //
-    Urb->UrbSelectConfiguration.ConfigurationHandle =
(PVOID)ROOTHUB2_CONFIGURATION_DESCRIPTOR;
-
-    //
-    // TODO: copy interface info
-    //
-    return STATUS_SUCCESS;
+    PUSBDEVICE UsbDevice;
+
+    //
+    // is the request for the Root Hub
+    //
+    if (Urb->UrbHeader.UsbdDeviceHandle == NULL)
+    {
+        //
+        // FIXME: support setting device to unconfigured state
+        //
+        PC_ASSERT(Urb->UrbSelectConfiguration.ConfigurationDescriptor);
+
+        //
+        // set device handle
+        //
+        Urb->UrbSelectConfiguration.ConfigurationHandle =
(PVOID)ROOTHUB2_CONFIGURATION_DESCRIPTOR;
+
+        //
+        // TODO: copy interface info
+        //
+        return STATUS_SUCCESS;
+    }
+    else
+    {
+        //
+        // check if this is a valid usb device handle
+        //
+        PC_ASSERT(ValidateUsbDevice(PUSBDEVICE(Urb->UrbHeader.UsbdDeviceHandle)));
+
+        //
+        // get device
+        //
+        UsbDevice = PUSBDEVICE(Urb->UrbHeader.UsbdDeviceHandle);
+
+        //
+        // select configuration
+        //
+        return
UsbDevice->SelectConfiguration(Urb->UrbSelectConfiguration.ConfigurationDescriptor,
&Urb->UrbSelectConfiguration.Interface,
&Urb->UrbSelectConfiguration.ConfigurationHandle);
+    }
+}
+
+//-----------------------------------------------------------------------------------------
+NTSTATUS
+CHubController::HandleSelectInterface(
+    IN OUT PIRP Irp, 
+    PURB Urb)
+{
+    PUSBDEVICE UsbDevice;
+
+    //
+    // sanity check
+    //
+    PC_ASSERT(Urb->UrbSelectInterface.ConfigurationHandle);
+
+    //
+    // is the request for the Root Hub
+    //
+    if (Urb->UrbHeader.UsbdDeviceHandle == NULL)
+    {
+        //
+        // no op for root hub
+        //
+        return STATUS_SUCCESS;
+    }
+    else
+    {
+        //
+        // check if this is a valid usb device handle
+        //
+        PC_ASSERT(ValidateUsbDevice(PUSBDEVICE(Urb->UrbHeader.UsbdDeviceHandle)));
+
+        //
+        // get device
+        //
+        UsbDevice = PUSBDEVICE(Urb->UrbHeader.UsbdDeviceHandle);
+
+        //
+        // select interface
+        //
+        return
UsbDevice->SelectInterface(Urb->UrbSelectInterface.ConfigurationHandle,
&Urb->UrbSelectInterface.Interface);
+    }
 }
 

//-----------------------------------------------------------------------------------------
@@ -1249,7 +1308,7 @@
             CtrlSetup.wValue.LowByte = Urb->UrbControlDescriptorRequest.Index;
             CtrlSetup.wValue.HiByte =
Urb->UrbControlDescriptorRequest.DescriptorType;
             CtrlSetup.wIndex.W = Urb->UrbControlDescriptorRequest.LanguageId;
-            CtrlSetup.wLength =
Urb->UrbControlDescriptorRequest.TransferBufferLength;
+            CtrlSetup.wLength =
(USHORT)Urb->UrbControlDescriptorRequest.TransferBufferLength;
             CtrlSetup.bmRequestType.B = 0x80;
 
             //
@@ -1317,6 +1376,9 @@
                 case URB_FUNCTION_SELECT_CONFIGURATION:
                     Status = HandleSelectConfiguration(Irp, Urb);
                     break;
+                case URB_FUNCTION_SELECT_INTERFACE:
+                    Status = HandleSelectInterface(Irp, Urb);
+                    break;
                 case URB_FUNCTION_CLASS_OTHER:
                     Status = HandleClassOther(Irp, Urb);
                     break;
@@ -1898,7 +1960,7 @@
         //
         // now set the device address
         //
-        Status = UsbDevice->SetDeviceAddress(DeviceAddress);
+        Status = UsbDevice->SetDeviceAddress((UCHAR)DeviceAddress);
 
         if (NT_SUCCESS(Status))
             break;

Modified: branches/usb-bringup/drivers/usb/usbehci_new/interfaces.h
URL:
http://svn.reactos.org/svn/reactos/branches/usb-bringup/drivers/usb/usbehci…
==============================================================================
--- branches/usb-bringup/drivers/usb/usbehci_new/interfaces.h [iso-8859-1] (original)
+++ branches/usb-bringup/drivers/usb/usbehci_new/interfaces.h [iso-8859-1] Fri Apr 29
02:46:04 2011
@@ -386,6 +386,7 @@
     virtual NTSTATUS InitializeWithSetupPacket(IN PDMAMEMORYMANAGER DmaManager,
                                                IN PUSB_DEFAULT_PIPE_SETUP_PACKET
SetupPacket,
                                                IN UCHAR DeviceAddress,
+                                               IN OPTIONAL PUSB_ENDPOINT_DESCRIPTOR
EndpointDescriptor,
                                                IN OUT ULONG TransferBufferLength,
                                                IN OUT PMDL TransferBuffer) = 0;
 
@@ -796,13 +797,13 @@
                                              IN ULONG BufferLength,
                                              OUT PULONG OutBufferLength) = 0;
 
-//----------------------------------------------------------------------------------------
+//-----------------------------------------------------------------------------------------
 //
 // Description: returns length of configuration descriptors
 //
      virtual ULONG GetConfigurationDescriptorsLength() = 0;
 
-//----------------------------------------------------------------------------------------
+//-----------------------------------------------------------------------------------------
 //
 // SubmitSetupPacket
 //
@@ -812,7 +813,24 @@
                                         IN OUT ULONG BufferLength,
                                         OUT PVOID Buffer) = 0;
 
-
+//-----------------------------------------------------------------------------------------
+//
+// SelectConfiguration
+//
+// Description: selects a configuration
+
+    virtual NTSTATUS SelectConfiguration(IN PUSB_CONFIGURATION_DESCRIPTOR
ConfigurationDescriptor,
+                                         IN PUSBD_INTERFACE_INFORMATION Interface,
+                                         OUT USBD_CONFIGURATION_HANDLE
*ConfigurationHandle) = 0;
+
+//-----------------------------------------------------------------------------------------
+//
+// SelectConfiguration
+//
+// Description: selects a interface of an configuration
+
+    virtual NTSTATUS SelectInterface(IN USBD_CONFIGURATION_HANDLE ConfigurationHandle,
+                                     IN OUT PUSBD_INTERFACE_INFORMATION Interface) = 0;
 };
 
 typedef IUSBDevice *PUSBDEVICE;

Modified: branches/usb-bringup/drivers/usb/usbehci_new/usb_device.cpp
URL:
http://svn.reactos.org/svn/reactos/branches/usb-bringup/drivers/usb/usbehci…
==============================================================================
--- branches/usb-bringup/drivers/usb/usbehci_new/usb_device.cpp [iso-8859-1] (original)
+++ branches/usb-bringup/drivers/usb/usbehci_new/usb_device.cpp [iso-8859-1] Fri Apr 29
02:46:04 2011
@@ -68,11 +68,12 @@
     virtual VOID GetConfigurationDescriptors(IN PUSB_CONFIGURATION_DESCRIPTOR
ConfigDescriptorBuffer, IN ULONG BufferLength, OUT PULONG OutBufferLength);
     virtual ULONG GetConfigurationDescriptorsLength();
     virtual NTSTATUS SubmitSetupPacket(IN PUSB_DEFAULT_PIPE_SETUP_PACKET SetupPacket, OUT
ULONG BufferLength, OUT PVOID Buffer);
-
+    virtual NTSTATUS SelectConfiguration(IN PUSB_CONFIGURATION_DESCRIPTOR
ConfigurationDescriptor, IN PUSBD_INTERFACE_INFORMATION Interface, OUT
USBD_CONFIGURATION_HANDLE *ConfigurationHandle);
+    virtual NTSTATUS SelectInterface(IN USBD_CONFIGURATION_HANDLE ConfigurationHandle, IN
OUT PUSBD_INTERFACE_INFORMATION Interface);
 
     // local function
     virtual NTSTATUS CommitIrp(PIRP Irp);
-    virtual NTSTATUS CommitSetupPacket(PUSB_DEFAULT_PIPE_SETUP_PACKET Packet, IN ULONG
BufferLength, IN OUT PMDL Mdl);
+    virtual NTSTATUS CommitSetupPacket(PUSB_DEFAULT_PIPE_SETUP_PACKET Packet, IN OPTIONAL
PUSB_ENDPOINT_DESCRIPTOR EndpointDescriptor, IN ULONG BufferLength, IN OUT PMDL Mdl);
     virtual NTSTATUS CreateConfigurationDescriptor(ULONG ConfigurationIndex);
     virtual NTSTATUS CreateDeviceDescriptor();
     virtual VOID DumpDeviceDescriptor(PUSB_DEVICE_DESCRIPTOR DeviceDescriptor);
@@ -90,6 +91,7 @@
     ULONG m_Port;
     UCHAR m_DeviceAddress;
     PVOID m_Data;
+    UCHAR m_ConfigurationIndex;
     KSPIN_LOCK m_Lock;
     USB_DEVICE_DESCRIPTOR m_DeviceDescriptor;
     ULONG m_PortStatus;
@@ -338,7 +340,7 @@
     //
     // set device address
     //
-    Status = CommitSetupPacket(CtrlSetup, 0, 0);
+    Status = CommitSetupPacket(CtrlSetup, 0, 0, 0);
 
     //
     // free setup packet
@@ -440,8 +442,10 @@
 UCHAR
 CUSBDevice::GetConfigurationValue()
 {
-    UNIMPLEMENTED
-    return 0x1;
+    //
+    // return configuration index
+    //
+    return m_ConfigurationIndex;
 }
 

//----------------------------------------------------------------------------------------
@@ -527,7 +531,8 @@

//----------------------------------------------------------------------------------------
 NTSTATUS
 CUSBDevice::CommitSetupPacket(
-    PUSB_DEFAULT_PIPE_SETUP_PACKET Packet,
+    IN PUSB_DEFAULT_PIPE_SETUP_PACKET Packet,
+    IN OPTIONAL PUSB_ENDPOINT_DESCRIPTOR EndpointDescriptor,
     IN ULONG BufferLength, 
     IN OUT PMDL Mdl)
 {
@@ -559,7 +564,7 @@
     //
     // initialize request
     //
-    Status = Request->InitializeWithSetupPacket(m_DmaManager, Packet, m_DeviceAddress,
BufferLength, Mdl);
+    Status = Request->InitializeWithSetupPacket(m_DmaManager, Packet, m_DeviceAddress,
EndpointDescriptor, BufferLength, Mdl);
     if (!NT_SUCCESS(Status))
     {
         //
@@ -642,7 +647,7 @@
     //
     // commit setup packet
     //
-    Status = CommitSetupPacket(&CtrlSetup, sizeof(USB_DEVICE_DESCRIPTOR), Mdl);
+    Status = CommitSetupPacket(&CtrlSetup, 0, sizeof(USB_DEVICE_DESCRIPTOR), Mdl);
 
     //
     // now free the mdl
@@ -734,7 +739,7 @@
     //
     // commit packet
     //
-    Status = CommitSetupPacket(&CtrlSetup, PAGE_SIZE, Mdl);
+    Status = CommitSetupPacket(&CtrlSetup, 0, PAGE_SIZE, Mdl);
     if (!NT_SUCCESS(Status))
     {
         //
@@ -1039,7 +1044,7 @@
     //
     // commit setup packet
     //
-    Status = CommitSetupPacket(SetupPacket, BufferLength, Mdl);
+    Status = CommitSetupPacket(SetupPacket, 0, BufferLength, Mdl);
 
     //
     // free mdl
@@ -1051,6 +1056,184 @@
     //
     return Status;
 }
+
+//----------------------------------------------------------------------------------------
+NTSTATUS
+CUSBDevice::SelectConfiguration(
+    IN PUSB_CONFIGURATION_DESCRIPTOR ConfigurationDescriptor,
+    IN PUSBD_INTERFACE_INFORMATION InterfaceInfo,
+    OUT USBD_CONFIGURATION_HANDLE *ConfigurationHandle)
+{
+    ULONG ConfigurationIndex = 0;
+    ULONG InterfaceIndex, PipeIndex;
+    USB_DEFAULT_PIPE_SETUP_PACKET CtrlSetup;
+    NTSTATUS Status;
+
+    //
+    // FIXME: support multiple configurations
+    //
+    PC_ASSERT(m_DeviceDescriptor.bNumConfigurations == 1);
+    PC_ASSERT(ConfigurationDescriptor->iConfiguration ==
m_ConfigurationDescriptors[ConfigurationIndex].ConfigurationDescriptor.iConfiguration);
+
+    //
+    // sanity check
+    //
+    PC_ASSERT(ConfigurationDescriptor->bNumInterfaces <=
m_ConfigurationDescriptors[ConfigurationIndex].ConfigurationDescriptor.bNumInterfaces);
+
+    //
+    // copy interface info and pipe info
+    //
+    for(InterfaceIndex = 0; InterfaceIndex <
ConfigurationDescriptor->bNumInterfaces; InterfaceIndex++)
+    {
+        //
+        // sanity check: is the info pre-layed out
+        //
+        PC_ASSERT(InterfaceInfo->NumberOfPipes ==
m_ConfigurationDescriptors[ConfigurationIndex].Interfaces[InterfaceIndex].InterfaceDescriptor.bNumEndpoints);
+        PC_ASSERT(InterfaceInfo->Length != 0);
+#ifdef _MSC_VER
+        PC_ASSERT(InterfaceInfo->Length == FIELD_OFFSET(USBD_INTERFACE_INFORMATION,
Pipes[InterfaceInfo->NumberOfPipes]));
+#endif
+
+        //
+        // copy interface info
+        //
+        InterfaceInfo->InterfaceHandle =
(USBD_INTERFACE_HANDLE)&m_ConfigurationDescriptors[ConfigurationIndex].Interfaces[InterfaceIndex];
+        InterfaceInfo->Class =
m_ConfigurationDescriptors[ConfigurationIndex].Interfaces[InterfaceIndex].InterfaceDescriptor.bInterfaceClass;
+        InterfaceInfo->SubClass =
m_ConfigurationDescriptors[ConfigurationIndex].Interfaces[InterfaceIndex].InterfaceDescriptor.bInterfaceSubClass;
+        InterfaceInfo->Protocol =
m_ConfigurationDescriptors[ConfigurationIndex].Interfaces[InterfaceIndex].InterfaceDescriptor.bInterfaceProtocol;
+        InterfaceInfo->Reserved = 0;
+
+        //
+        // copy endpoint info
+        //
+        for(PipeIndex = 0; PipeIndex < InterfaceInfo->NumberOfPipes; PipeIndex++)
+        {
+            //
+            // copy pipe info
+            //
+            InterfaceInfo->Pipes[PipeIndex].MaximumPacketSize =
m_ConfigurationDescriptors[ConfigurationIndex].Interfaces[InterfaceIndex].EndPoints[PipeIndex].EndPointDescriptor.wMaxPacketSize;
+            InterfaceInfo->Pipes[PipeIndex].EndpointAddress =
m_ConfigurationDescriptors[ConfigurationIndex].Interfaces[InterfaceIndex].EndPoints[PipeIndex].EndPointDescriptor.bEndpointAddress;
+            InterfaceInfo->Pipes[PipeIndex].Interval =
m_ConfigurationDescriptors[ConfigurationIndex].Interfaces[InterfaceIndex].EndPoints[PipeIndex].EndPointDescriptor.bInterval;
+            InterfaceInfo->Pipes[PipeIndex].PipeType =
(USBD_PIPE_TYPE)m_ConfigurationDescriptors[ConfigurationIndex].Interfaces[InterfaceIndex].EndPoints[PipeIndex].EndPointDescriptor.bmAttributes;
+            InterfaceInfo->Pipes[PipeIndex].PipeHandle =
(PVOID)&m_ConfigurationDescriptors[ConfigurationIndex].Interfaces[InterfaceIndex].EndPoints[PipeIndex].EndPointDescriptor;
+        }
+
+        //
+        // move offset
+        //
+        InterfaceInfo =
(PUSBD_INTERFACE_INFORMATION)((ULONG_PTR)PtrToUlong(InterfaceInfo) +
InterfaceInfo->Length);
+    }
+
+    //
+    // now build setup packet
+    //
+    RtlZeroMemory(&CtrlSetup, sizeof(USB_DEFAULT_PIPE_SETUP_PACKET));
+    CtrlSetup.bRequest = USB_REQUEST_SET_CONFIGURATION;
+    CtrlSetup.wValue.W = ConfigurationDescriptor->iConfiguration;
+
+    //
+    // select configuration
+    //
+    Status = CommitSetupPacket(&CtrlSetup, 0, 0, 0);
+
+    //
+    // informal debug print
+    //
+    DPRINT1("CUsbDevice::SelectConfiguration New Configuration %x Old Configuration
%x Result %x\n", ConfigurationDescriptor->iConfiguration, m_ConfigurationIndex,
Status);
+
+    if (NT_SUCCESS(Status))
+    {
+        //
+        // store configuration device index
+        //
+        m_ConfigurationIndex = ConfigurationDescriptor->iConfiguration;
+
+        //
+        // store configuration handle
+        //
+        *ConfigurationHandle = &m_ConfigurationDescriptors[ConfigurationIndex];
+    }
+
+    //
+    // done
+    //
+    return Status;
+}
+
+//----------------------------------------------------------------------------------------
+NTSTATUS
+CUSBDevice::SelectInterface(
+    IN USBD_CONFIGURATION_HANDLE ConfigurationHandle,
+    IN OUT PUSBD_INTERFACE_INFORMATION InterfaceInfo)
+{
+    ULONG ConfigurationIndex = 0;
+    PUSB_CONFIGURATION Configuration;
+    ULONG PipeIndex;
+    USB_DEFAULT_PIPE_SETUP_PACKET CtrlSetup;
+    NTSTATUS Status;
+
+    //
+    // FIXME support multiple configurations
+    //
+    PC_ASSERT(&m_ConfigurationDescriptors[ConfigurationIndex] ==
(PUSB_CONFIGURATION)ConfigurationHandle);
+
+    //
+    // get configuration struct
+    //
+    Configuration = (PUSB_CONFIGURATION)ConfigurationHandle;
+
+    //
+    // sanity checks
+    //
+    PC_ASSERT(Configuration->ConfigurationDescriptor.bNumInterfaces >
InterfaceInfo->InterfaceNumber);
+   
PC_ASSERT(Configuration->Interfaces[InterfaceInfo->InterfaceNumber].InterfaceDescriptor.bNumEndpoints
== InterfaceInfo->NumberOfPipes);
+#ifdef _MSC_VER
+    PC_ASSERT(InterfaceInfo->Length == FIELD_OFFSET(USBD_INTERFACE_INFORMATION,
Pipes[InterfaceInfo->NumberOfPipes]));
+#endif
+
+    //
+    // copy pipe handles
+    //
+    for(PipeIndex = 0; PipeIndex < InterfaceInfo->NumberOfPipes; PipeIndex++)
+    {
+        //
+        // copy pipe handle
+        //
+        InterfaceInfo->Pipes[PipeIndex].PipeHandle =
&Configuration->Interfaces[InterfaceInfo->InterfaceNumber].EndPoints[PipeIndex].EndPointDescriptor;
+
+        if
(Configuration->Interfaces[InterfaceInfo->InterfaceNumber].EndPoints[PipeIndex].EndPointDescriptor.bmAttributes
& (USB_ENDPOINT_TYPE_ISOCHRONOUS | USB_ENDPOINT_TYPE_INTERRUPT))
+        {
+            //
+            // FIXME: check if enough bandwidth is available
+            //
+        }
+    }
+
+    //
+    // initialize setup packet
+    //
+    RtlZeroMemory(&CtrlSetup, sizeof(USB_DEFAULT_PIPE_SETUP_PACKET));
+    CtrlSetup.bRequest = USB_REQUEST_SET_INTERFACE;
+    CtrlSetup.wValue.W = InterfaceInfo->AlternateSetting;
+    CtrlSetup.wIndex.W = InterfaceInfo->InterfaceNumber;
+    CtrlSetup.bmRequestType.B = 0x01;
+
+    //
+    // issue request
+    //
+    Status = CommitSetupPacket(&CtrlSetup, 0, 0, 0);
+
+    //
+    // informal debug print
+    //
+    DPRINT1("CUSBDevice::SelectInterface AlternateSetting %x InterfaceNumber %x
Status %x\n", InterfaceInfo->AlternateSetting, InterfaceInfo->InterfaceNumber,
Status);
+
+    //
+    // done
+    //
+    return Status;
+}
+

//----------------------------------------------------------------------------------------
 NTSTATUS
 CreateUSBDevice(

Modified: branches/usb-bringup/drivers/usb/usbehci_new/usb_request.cpp
URL:
http://svn.reactos.org/svn/reactos/branches/usb-bringup/drivers/usb/usbehci…
==============================================================================
--- branches/usb-bringup/drivers/usb/usbehci_new/usb_request.cpp [iso-8859-1] (original)
+++ branches/usb-bringup/drivers/usb/usbehci_new/usb_request.cpp [iso-8859-1] Fri Apr 29
02:46:04 2011
@@ -36,7 +36,7 @@
     }
 
     // IUSBRequest interface functions
-    virtual NTSTATUS InitializeWithSetupPacket(IN PDMAMEMORYMANAGER DmaManager, IN
PUSB_DEFAULT_PIPE_SETUP_PACKET SetupPacket, IN UCHAR DeviceAddress, IN OUT ULONG
TransferBufferLength, IN OUT PMDL TransferBuffer);
+    virtual NTSTATUS InitializeWithSetupPacket(IN PDMAMEMORYMANAGER DmaManager, IN
PUSB_DEFAULT_PIPE_SETUP_PACKET SetupPacket, IN UCHAR DeviceAddress, IN OPTIONAL
PUSB_ENDPOINT_DESCRIPTOR EndpointDescriptor, IN OUT ULONG TransferBufferLength, IN OUT
PMDL TransferBuffer);
     virtual NTSTATUS InitializeWithIrp(IN PDMAMEMORYMANAGER DmaManager, IN OUT PIRP
Irp);
     virtual VOID CompletionCallback(IN NTSTATUS NtStatusCode, IN ULONG UrbStatusCode, IN
struct _QUEUE_HEAD *QueueHead);
     virtual VOID CancelCallback(IN NTSTATUS NtStatusCode, IN struct _QUEUE_HEAD
*QueueHead);
@@ -104,6 +104,11 @@
     UCHAR m_DeviceAddress;
 
     //
+    // store end point address
+    //
+    PUSB_ENDPOINT_DESCRIPTOR m_EndpointDescriptor;
+
+    //
     // DMA queue head
     //
     PQUEUE_HEAD m_QueueHead;
@@ -143,6 +148,7 @@
     IN PDMAMEMORYMANAGER DmaManager,
     IN PUSB_DEFAULT_PIPE_SETUP_PACKET SetupPacket,
     IN UCHAR DeviceAddress,
+    IN OPTIONAL PUSB_ENDPOINT_DESCRIPTOR EndpointDescriptor,
     IN OUT ULONG TransferBufferLength,
     IN OUT PMDL TransferBuffer)
 {
@@ -160,6 +166,7 @@
     m_TransferBufferLength = TransferBufferLength;
     m_TransferBufferMDL = TransferBuffer;
     m_DeviceAddress = DeviceAddress;
+    m_EndpointDescriptor = EndpointDescriptor;
 
     //
     // allocate completion event
@@ -243,6 +250,11 @@
                 PC_ASSERT(Urb->UrbBulkOrInterruptTransfer.TransferBufferMDL);
 
                 //
+                // get endpoint descriptor
+                //
+                m_EndpointDescriptor =
(PUSB_ENDPOINT_DESCRIPTOR)Urb->UrbBulkOrInterruptTransfer.PipeHandle;
+
+                //
                 // get mdl buffer
                 //
                 m_TransferBufferMDL =
Urb->UrbBulkOrInterruptTransfer.TransferBufferMDL;
@@ -590,8 +602,14 @@
     //
     QueueHead->EndPointCharacteristics.DeviceAddress = GetDeviceAddress();
     
-	//if (PipeHandle)
-    //    QueueHead->EndPointCharacteristics.EndPointNumber =
((PUSB_ENDPOINT_DESCRIPTOR)PipeHandle)->bEndpointAddress & 0x0F;
+    if (m_EndpointDescriptor)
+    {
+        //
+        // set endpoint address and max packet length
+        //
+        QueueHead->EndPointCharacteristics.EndPointNumber =
m_EndpointDescriptor->bEndpointAddress & 0x0F;
+        QueueHead->EndPointCharacteristics.MaximumPacketLength =
m_EndpointDescriptor->wMaxPacketSize;
+    }
 
     QueueHead->Token.Bits.DataToggle = TRUE;