git: msk(4): Align RX buffer on 8bytes for hardware w/ ram buffe
commit 2a9b20a41f9ecbfd7ab7e2a8be8f0c959fbe9945
Author: Sepherosa Ziehau <sephe@dragonflybsd.org>
Date: Mon Jul 11 14:50:07 2011 +0800
msk(4): Align RX buffer on 8bytes for hardware w/ ram buffer
Add another hardware bug workaround for Yukon II controllers that
have hardware ram buffer. The silicon bug seem to be triggered by
pause frames if receive buffer is not aligned on FIFO word(8 bytes).
To workaround the issue, make sure to align Rx buffers on 8 bytes.
Unfortunately this workaround requires yet another Rx fixup for
strict alignment architecture machines to align IP header.
For newer hardwares that lacks ram buffer may not have this bug so
check number of available ram buffer size to see the existence of
ram buffer.
Obtained-frim: FreeBSD 183346
Summary of changes:
sys/dev/netif/msk/if_msk.c | 32 +++++++++++++++++++++++++-------
sys/dev/netif/msk/if_mskreg.h | 4 ++++
2 files changed, 29 insertions(+), 7 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/2a9b20a41f9ecbfd7ab7e2a8be8f0c959fbe9945
--
DragonFly BSD source repository