On Fri, Oct 26, 2001 at 11:59:38PM -0700, Muhammad Haroon wrote:
> Hi All,
> Does anybody know the maximum size of the buffer which
> can be handled by the the bulk and isochronous
> transfers in case of usbcore.
> Urgent help required.
I would guess 2^31-1 in total, at least for bulk transfers. bulks are
automatically split up into pipesize'd transfers, for isochronous you have
to explicitely specify the length for each frame (<1024), there is a maximum
of "schedule-ahead" of about 0.9s (may depend a bit on the HCD), thus about
900k are useful. If you have problems: Only use kmalloc'ed memory, static or
stack memory may fail.
--
Georg Acher, [EMAIL PROTECTED]
http://www.in.tum.de/~acher/
"Oh no, not again !" The bowl of petunias
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