USB Support

[Saulius Krasuckas]

* On Sun, 12 Apr 2015, Steve Kenton wrote:
> On 4/12/2015 11:42 AM, Saulius Krasuckas wrote:
> > * On Sun, 12 Apr 2015, Stefan Dösinger wrote:
> > > Am 2015-04-11 um 17:38 schrieb Steve Kenton:
> > > > USB Support has been on the list of possible release criteria 
> > > > basically forever. I've read through all the old threads and other 
> > > > discussions I could find and it boils down to "really hard to do 
> > > > right". If possible could someone knowledgeable comment briefly on 
> > > > what might be an acceptable architecture for a Wine USB stack? 
...
> > > the first problem that needs to be solved is properly registering 
> > > USB devices in the device tree in the registry. This doesn't even 
> > > involve Windows USB drivers and is as "simple" as advertising a USB 
> > > mass storage device that's handled by Linux / OSX as a USB mass 
> > > storage device instead of a fixed hard drive, with the proper vendor 
> > > and device ID etc.
> > Stefan, do you mean populating entries in registry subkeys 
> > "Control\DeviceClasses" [1] and "Enum" [2] or namely "Enum\USB" [3] in 
> > the HKLM\SYSTEM\CurrentControlSet\ key ?
> > 
> > I guess namely what values are crucial here except for essentially 
> > looking "HardwareID" [4] -- can it be all of them?  Judging by the 
> > WineHQ Wiki [5] I am not so sure.
> I spent some more time looking at this last night and it looks like the 
> registry enum keys are about every device ever plugged into the system, 
> whether it's currently present or not and the actual Windows device tree 
> is maintained in memory, so just the registry keys probably won't 
> suffice.

Steve, it won't of course.  But this is the first required step.  I would 
say that another way:

let's make the HwDetect [6] (custom program) work in Wine the same way it 
works in Windows (except for disabling devices -- just the monitoring 
part).  It reads very small amount of data from "Enum\USB" subkey (I 
guess).

Another step might be fixing Wine so "USB Device Tree Viewer" [7] works as 
in Windows.  But this one looks like a lot more complicated testcase.

S.

[6] http://www.codeproject.com/Articles/14500/Detecting-Hardware-Insertion-and-or-Removal
[7] http://www.uwe-sieber.de/usbtreeview_e.html