On Mon, May 22, 2000 at 08:31:38AM -0700, Dunlap, Randy wrote:
> > > 4. USB 2.0 Technical Overview:
> > [snip]
> > > . Same software interfaces (USBDI) (N/A)
> > Was there any discussion of this? Is anyone doing it at all?
>
> It was just a blanket statement implying that the Windows
> driver API is not changing. Whether it is USBDI or not was
> not discussed or even relevant to that discussion.
>
> There is a USBDI Device Working Group headed by Janet Schank
> of Compaq (formerly DEC). Here's its Mission Statement:
> The Open USB Driver Interface (OpenUSBDI)
> specification allows USB device drivers, such as vendor
> unique drivers and USB class drivers, to be 100% source
> code portable between operation systems which
> provide OpenUSBDI support. Involved in the
> development of this specification are representatives
> from the major UNIX operating system vendors,
> embedded system vendors, and other non-UNIX
> operating systems.
>
> It's not clear to me how much adoption and usage they are seeing.
Last I recall, the OpenUSBDI spec relied upon the host OS adopting the UDI
model for drivers. As I remember the flamewar on linux-kernel, UDI will
not be adopted by Linux anytime soon (although the reference
implementation is said to be done on Linux, I haven't seen any performance
numbers.)
Due to this, I think the only OSs that are/will supporting OpenUSBDI are
DigitalUnix, SCO, and perhaps Sun. I know I stopped attending / paying
attention to the spec when UDI was mandated, and I think a number of
embedded and BIOS people also did. And since the spec is still at .9
level, there should be no OSs official support of it yet :)
Thanks for the write up on the conference Randy, very informative
(especially if you cross reference the expected dates with the first USB
2.0 conference I went to last year.)
greg k-h
greg@(kroah|wirex).com
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