Subject: Re: binpatch symbols to fix SCSI lockups
To: Dmitri Baughman <firstname.lastname@example.org>
From: Michael L. Hitch <email@example.com>
Date: 04/16/1995 10:36:25
On Apr 13, 11:44pm, Dmitri Baughman wrote:
> I'm going to be working with a new kernel, but need to binpatch the SCSI
> flags which deal with DMA and re-selection. Can someone refresh my memory as
> to what their names are? Thanks!
For 33C93 based adapters:
_sbic_no_dma set non-zero will disable DMA transfers.
The 53C710 driver always does DMA; _siop_no_dma actually means to not
use interrupts on the SCSI command. The 5380 driver doesn't do any DMA
period, but some drivers will use "psuedo-DMA", which can be disabled by
The 33C93 and 5380 drivers do not support disconnect, so there isn't
anything to control re-selection.
Michael L. Hitch INTERNET: firstname.lastname@example.org
Office of Systems and Computing Services
Montana State University Bozeman, MT USA