Module Name: src
Committed By: jakllsch
Date: Tue Jul 27 20:20:46 UTC 2010
Modified Files:
src/sys/dev/usb: ugen.c
Log Message:
Tune ugen(4) isochronous parameters to better support high speed pipes.
Fixes PR#43159.
Justification:
UGEN_NISORFRMS, previously 4, is now 8 because that's the number of
microframes per frame on a high speed bus. This allows data to be
transfered every microframe if necessary.
UGEN_NISOREQS, previously 6, is now 4. This is harder to justify,
but I didn't think the total number of buffer frames needed to be
much more than it was.
UGEN_NISOFRAMES, previously 500, is now (UGEN_NISORFRMS * UGEN_NISOREQS)
(32 with values as above). This is all the more we've actually used.
To generate a diff of this commit:
cvs rdiff -u -r1.109 -r1.110 src/sys/dev/usb/ugen.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
