CVS commit: syssrc/sys/dev/ieee1394

[James Chacon <jmc%netbsd.org@localhost>]

Module Name:    syssrc
Committed By:   jmc
Date:           Mon Dec  9 09:09:55 UTC 2002

Modified Files:
        syssrc/sys/dev/ieee1394: fwohci.c

Log Message:
Restructure how the at_output dma map gets setup. Ask for a dma map that can
support up to the max ohci descriptor segments. Then attempt to fill it in
via a load. Use the number of segments filled in as the basis for figuring
out how many descriptors to supply to the ohci DMA engine.

XXX: Still needs to account for requests which because of splits may overflow
the 6 dma descriptors available today. For now this fixes cases where a
single 512 byte write was getting split into 2 dma segments from 1 incoming
iov request


To generate a diff of this commit:
cvs rdiff -r1.65 -r1.66 syssrc/sys/dev/ieee1394/fwohci.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.