PERFORCE change 128872 for review

[Hans Petter Selasky]

http://perforce.freebsd.org/chv.cgi?CH=128872

Change 128872 by hselasky at hselasky_laptop001 on 2007/11/09 19:29:16

	
	The first step into fully supporting Zero-Copy.

Affected files ...

.. //depot/projects/usb/src/sys/dev/usb/usb_subr.h#49 edit
.. //depot/projects/usb/src/sys/dev/usb/usb_transfer.c#39 edit

Differences ...

==== //depot/projects/usb/src/sys/dev/usb/usb_subr.h#49 (text+ko) ====

@@ -697,6 +697,7 @@
 void	usbd_start_hardware(struct usbd_xfer *xfer);
 void	usbd_transfer_start(struct usbd_xfer *xfer);
 void	usbd_transfer_stop(struct usbd_xfer *xfer);
+void	usbd_set_frame_data(struct usbd_xfer *xfer, void *ptr, uint32_t len, uint32_t frindex);
 void	__usbd_callback(struct usbd_xfer *xfer);
 void	usbd_do_callback(struct usbd_xfer **pp_xfer, struct thread *td);
 void	usbd_transfer_enqueue(struct usbd_xfer *xfer);

==== //depot/projects/usb/src/sys/dev/usb/usb_transfer.c#39 (text+ko) ====

@@ -1421,6 +1421,19 @@
 	return;
 }
 
+/*------------------------------------------------------------------------*
+ *	usbd_set_frame_data
+ *
+ * This function sets the pointer and length of data that should loaded
+ * directly into DMA for the given USB frame.
+ *------------------------------------------------------------------------*/
+void
+usbd_set_frame_data(struct usbd_xfer *xfer, void *ptr, uint32_t len,
+    uint32_t frindex)
+{
+	return;
+}
+
 /*---------------------------------------------------------------------------*
  *	__usbd_callback
  *