Hi, On Fri, Aug 09, 2013 at 10:37:50AM -0400, Alan Stern wrote: > > > > Wait a minute, didn't we discuss a while back that these test features > > > > should be built into usbcore so that we could have a usbcv clone for > > > > linux ? > > > > > > There's no way this can be built into the core. This test requires the > > > behavior of the host controller to be modified at a low level > > > (introducing a 15-second delay between the Setup and Data stages of a > > > control transfer). Only the HCD can do that. > > > > heh, it doesn't need to be entirely in the core. Core could have the > > generic calls and HCDs could implement some callbacks, but I think quite > > a bit of the code will be similar if we implement the same thing on all > > HCDs. > > What generic calls and callbacks would you suggest? I assume you want > enough to cover not just this one test but the entire USB-CV suite. maybe a single callback for supporting 'testmodes' ? which receives the test mode as argument ? > > > Besides, doesn't USB-CV install its own version of Windows' EHCI driver > > > while it runs its tests? > > > > IIRC only USB20CV, the new USB30CV (which also tests USB2) doesn't do > > that. > > I don't have more than the foggiest notion of how these things really > work under Windows. and that's hardly necessary to understand... -- balbi
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