MdeModulePkg/UsbMouse: Get HID descriptor from the return of Get_Desc(Configuration) request with total length rather than from Get_Hid_Desc request.

Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Elvin Li <elvin.li@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13449 6f19259b-4bc3-4df7-8a09-765794883524

2 files changed, 93 insertions, 17 deletions

diff --git a/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c b/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c
index d81eaf7..d4e5a03 100644
--- a/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c
+++ b/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c
@@ -1,7 +1,7 @@
 /** @file

   USB Mouse Driver that manages USB mouse and produces Simple Pointer Protocol.

 

-Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2004 - 2012, Intel Corporation. All rights reserved.<BR>

 This program and the accompanying materials

 are licensed and made available under the terms and conditions of the BSD License

 which accompanies this distribution.  The full text of the license may be found at

@@ -521,46 +521,108 @@ InitializeUsbMouseDevice (
   IN OUT USB_MOUSE_DEV           *UsbMouseDev

   )

 {

-  EFI_USB_IO_PROTOCOL     *UsbIo;

-  UINT8                   Protocol;

-  EFI_STATUS              Status;

-  EFI_USB_HID_DESCRIPTOR  MouseHidDesc;

-  UINT8                   *ReportDesc;

-  UINT8                   ReportId;

-  UINT8                   Duration;

+  EFI_USB_IO_PROTOCOL       *UsbIo;

+  UINT8                     Protocol;

+  EFI_STATUS                Status;

+  EFI_USB_HID_DESCRIPTOR    *MouseHidDesc;

+  UINT8                     *ReportDesc;

+  UINT8                     ReportId;

+  UINT8                     Duration;

+  EFI_USB_CONFIG_DESCRIPTOR ConfigDesc;

+  VOID                      *Buf;

+  UINT32                    TransferResult;

+  UINT16                    Total;

+  USB_DESC_HEAD             *Head;

+  BOOLEAN                   Start;

 

   UsbIo = UsbMouseDev->UsbIo;

 

   //

-  // Get HID descriptor

+  // Get the current configuration descriptor. Note that it doesn't include other descriptors.

+  //

+  Status = UsbIo->UsbGetConfigDescriptor (

+                    UsbIo,

+                    &ConfigDesc

+                    );

+  if (EFI_ERROR (Status)) {

+    return Status;

+  }

+

+  //

+  // By issuing Get_Descriptor(Configuration) request with total length, we get the Configuration descriptor,

+  // all Interface descriptors, all Endpoint descriptors, and the HID descriptor for each interface.

   //

-  Status = UsbGetHidDescriptor (

+  Buf = AllocateZeroPool (ConfigDesc.TotalLength);

+  if (Buf == NULL) {

+    return EFI_OUT_OF_RESOURCES;

+  }

+

+  Status = UsbGetDescriptor (

              UsbIo,

-             UsbMouseDev->InterfaceDescriptor.InterfaceNumber,

-             &MouseHidDesc

+             (UINT16)((USB_DESC_TYPE_CONFIG << 8) | (ConfigDesc.ConfigurationValue - 1)),

+             0,

+             ConfigDesc.TotalLength,

+             Buf,

+             &TransferResult

              );

   if (EFI_ERROR (Status)) {

+    FreePool (Buf);

     return Status;

   }

 

+  Total = 0;

+  Start = FALSE;

+  Head  = (USB_DESC_HEAD *)Buf;  

+  MouseHidDesc = NULL;

+

+  //

+  // Get HID descriptor from the receipt of Get_Descriptor(Configuration) request.

+  // This algorithm is based on the fact that the HID descriptor shall be interleaved

+  // between the interface and endpoint descriptors for HID interfaces.

+  //

+  while (Total < ConfigDesc.TotalLength) {

+    if (Head->Type == USB_DESC_TYPE_INTERFACE) {

+      if ((((USB_INTERFACE_DESCRIPTOR *)Head)->InterfaceNumber == UsbMouseDev->InterfaceDescriptor.InterfaceNumber) &&

+        (((USB_INTERFACE_DESCRIPTOR *)Head)->AlternateSetting == UsbMouseDev->InterfaceDescriptor.AlternateSetting)) {

+        Start = TRUE;

+      }

+    }

+    if ((Start == TRUE) && (Head->Type == USB_DESC_TYPE_ENDPOINT)) {

+      break;

+    }

+    if ((Start == TRUE) && (Head->Type == USB_DESC_TYPE_HID)) {

+      MouseHidDesc = (EFI_USB_HID_DESCRIPTOR *)Head;

+      break;

+    }

+    Total += (UINT16)Head->Len;

+    Head   = (USB_DESC_HEAD*)((UINT8 *)Buf + Total);

+  }

+

+  if (MouseHidDesc == NULL) {

+    FreePool (Buf);

+    return EFI_UNSUPPORTED;

+  }

+

   //

   // Get report descriptor

   //

-  if (MouseHidDesc.HidClassDesc[0].DescriptorType != USB_DESC_TYPE_REPORT) {

+  if (MouseHidDesc->HidClassDesc[0].DescriptorType != USB_DESC_TYPE_REPORT) {

+    FreePool (Buf);

     return EFI_UNSUPPORTED;

   }

 

-  ReportDesc = AllocateZeroPool (MouseHidDesc.HidClassDesc[0].DescriptorLength);

+  ReportDesc = AllocateZeroPool (MouseHidDesc->HidClassDesc[0].DescriptorLength);

   ASSERT (ReportDesc != NULL);

 

   Status = UsbGetReportDescriptor (

              UsbIo,

              UsbMouseDev->InterfaceDescriptor.InterfaceNumber,

-             MouseHidDesc.HidClassDesc[0].DescriptorLength,

+             MouseHidDesc->HidClassDesc[0].DescriptorLength,

              ReportDesc

              );

 

   if (EFI_ERROR (Status)) {

+    FreePool (Buf);

     FreePool (ReportDesc);

     return Status;

   }

@@ -571,10 +633,11 @@ InitializeUsbMouseDevice (
   Status = ParseMouseReportDescriptor (

              UsbMouseDev,

              ReportDesc,

-             MouseHidDesc.HidClassDesc[0].DescriptorLength

+             MouseHidDesc->HidClassDesc[0].DescriptorLength

              );

 

   if (EFI_ERROR (Status)) {

+    FreePool (Buf);

     FreePool (ReportDesc);

     return Status;

   }

@@ -610,6 +673,7 @@ InitializeUsbMouseDevice (
                );

 

     if (EFI_ERROR (Status)) {

+      FreePool (Buf);

       FreePool (ReportDesc);

       return Status;

     }

@@ -632,6 +696,7 @@ InitializeUsbMouseDevice (
     Duration

     );

 

+  FreePool (Buf);

   FreePool (ReportDesc);

 

   //

diff --git a/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.h b/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.h
index 6d677f7..0dab9de 100644
--- a/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.h
+++ b/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.h
@@ -1,7 +1,7 @@
 /** @file

   Helper routine and corresponding data struct used by USB Mouse Driver.

 

-Copyright (c) 2004 - 2011, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2004 - 2012, Intel Corporation. All rights reserved.<BR>

 This program and the accompanying materials

 are licensed and made available under the terms and conditions of the BSD License

 which accompanies this distribution.  The full text of the license may be found at

@@ -42,6 +42,17 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 

 #define USB_MOUSE_DEV_SIGNATURE SIGNATURE_32 ('u', 'm', 'o', 'u')

 

+//

+// A common header for usb standard descriptor.

+// Each stand descriptor has a length and type.

+//

+#pragma pack(1)

+typedef struct {

+  UINT8                   Len;

+  UINT8                   Type;

+} USB_DESC_HEAD;

+#pragma pack()

+

 ///

 /// Button range and status

 ///