On Tue, Oct 21, 2008 at 06:11:07PM +0900, Stephane Lapie wrote:
> I am currently working with a Portwell NAR-5530 (network appliance running
> off Intel hardware, can use regular HDs or CF cards as boot device).
>
> We want to use this at work for network appliances, but end up bumping in
> the following problem : the kernel detects any device plugged to the
> controller (SATA or CF) as UltraDMA-5, even though the BIOS specifies
> otherwise clearly.
I had the same problem with an early Soekris 4801 which was not wired to
support DMA or U-DMA on the CF slot. The solution was to disable both
with the 0x0ff0 flag to wd (see the wd man page):
*----------------------------------------------------------------------*
frisco# config -o new -e bsd.rd
OpenBSD 4.4 (RAMDISK_CD) #857: Tue Aug 12 17:31:49 MDT 2008
[EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/RAMDISK_CD
Enter 'help' for information
ukc> change wd
32 wd* at wdc0|wdc1|wdc*|wdc*|pciide*|pciide* channel -1 flags 0x0
change [n] y
channel [-1] ?
flags [0] ? 0x0ff0
32 wd* changed
32 wd* at wdc0|wdc1|wdc*|wdc*|pciide*|pciide* channel -1 flags 0xff0
ukc> q
Saving modified kernel.
frisco# mv new bsd.rd
frisco#
*----------------------------------------------------------------------*
Do the same with bsd and it should install fine. Once you have it
working properly you might be able to fine tune it to use a DMA mode it
supports, but this will get you going.
