CVS commit: syssrc

[Jason R Thorpe <thorpej%netbsd.org@localhost>]

Module Name:    syssrc
Committed By:   thorpej
Date:           Thu Jun 29 16:53:49 UTC 2000

Modified Files:
        syssrc/sys/dev/ic: i82557.c

Log Message:
Since the RFA is allocated in a normal mbuf, as opposed to DMA-safe
memory that is explicitly mapped in a DMA-coherent manner, we must
make sure to PREREAD sync the RFA after noticing a clear "complete"
bit.  Without this, the clear bit will linger in the cache, and the
CPU will not notice when the chip updates the bit via DMA later.

>From Izumi Tsutsui on port-arm32%netbsd.org.@localhost


To generate a diff of this commit:
cvs rdiff -r1.35 -r1.36 syssrc/sys/dev/ic/i82557.c

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