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Re: [Qemu-devel] usb and qemu


From: Mark Williamson
Subject: Re: [Qemu-devel] usb and qemu
Date: Thu, 11 Aug 2005 15:47:59 +0100
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> > Actually that'd be a fairly neat trick...  As an alternative, IIRC
> > there's a user space API for writing USB drivers under Linux - using that
> > you could
>
> get
>
> > access to both local and remote (IP encapsulated) USB devices, albeit not
> > in a cross-platform (host-wise) way.
>
>    That would be called libusb.  The libusb V1_0_DEVEL branch would be the
> prime candidate for this "wiring up", but is however incomplete.  libusb
> (<=0.1.10a) does not support asynchronous communications and does not have
> an api to deal with isochronous usb transfers as well.  I've been messing
> around with the ohci-hc / libusb 1.0 connection, albeit slowly.

Ah, OK.  I guess you can still get a good subset of functionality without iso 
transfers (e.g. supporting pendrives, network drives, etc.).  Do you find 
libusb to be good to work with?  I've done some similar stuff in the past but 
at the kernel level, rather than in user space.

Cheers,
Mark




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