[9fans] usb storage (was Re: pxe - nvram)

[Richard Miller <9fans@hamnavoe.com>]

> Well, Richard may be out of the world now.

Not quite!  Just very busy.

> After revision of usbd, it doesn't work anymore.

True.  Usbd has stopped doing some of the initialisation that the
usb storage driver (and perhaps also usb printing?) depended on.
I need to do a bit more work to recover from this.

But you should still be able to use the previous usbd - you'll
probably find it in /bin/usb/_usbd, or you can fetch it from
/n/sourcesdump/1106/plan9/386/bin/usb/usbd.

> Additionally, I think it is a personal and experimental version of
> USB storage for Plan 9 by Richard.   It also has a problem of being
> very slow to transfer data.  Those are, probably, the reason why 
> Richard does not make it public yet (Just my guess).

Not personal (I've sent copies to everyone who asks) but still
experimental.   The slow transfers are because the usbuhci driver in
the kernel does only one read/write per polling cycle.  It should
be able to chain blocks together, but I have not been able to get
this to work yet.

-- Richard