On 2015-01-21 18:36, John Merriam wrote:
On 1/21/2015 1:43 PM, Stefan Sperling wrote:
There is supposed to be a bounce buffer in bce to cope with
systems with more than 1GB but perhaps it is broken.
I installed the old 1GB DIMM that came with the machine when I
acquired it, and you are correct, it seems to work fine with <= 1GB
RAM.
Next question is how to fix it so it works with > 1GB RAM.
Hmmm. I looked at sys/dev/pci/if_bce.c and it looks to me like this
patch:
http://marc.info/?l=openbsd-tech&m=130183146308043
is still in place.
I then downloaded version 1.35 (dated 4/3/2011) of if_bce.c from
cvsweb.openbsd.org and did a diff against version 1.40 (in -current now)
of if_bce.c and there are hardly any differences. The main change is
the call to m_devget() removing the 5th parameter which was NULL. That
first parameter to m_devget looks funny to me. After thinking about it
I think I know what it's doing but it just looks weird to me. Anyway,
the only other changes besides includes from 1.35 to 1.40 are in the
bce_ioctl() function and they don't look like they would make any
difference to me.
So, what could be the problem then? Theoretically it did work as of the
1.35 if_bce.c revision which seems to have shipped in OpenBSD 5.0. This
message:
http://marc.info/?l=openbsd-tech&m=130217668909255
seems to verify that it did actually work at one point.
--
John Merriam
