Hi, Baranee
The intention of XhcCheckUrbResult() and XhcExecTransfer() is to traverse all
received events and accumulate these received data lengths for a URB request to
see if it matches with requested data length.
The members of URB, such as ->Completed, -> Finished, -> StartDone and ->
EndDone, are used for this way.
Thanks
Feng
From: Anbazhagan, Baraneedharan [mailto:anbazha...@hp.com]
Sent: Thursday, April 16, 2015 08:31
To: edk2-devel@lists.sourceforge.net
Cc: Tian, Feng
Subject: XHCI data transfer size
XhcCheckUrbResult calculates the data transfer size to return based on DataLen
within Urb, If the request is more than 64K and then it reports the size as
multiples of TrbNumber.
Does it make sense to make use of Length field within TRB to calculate total
data transfer size?
-Baranee
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