Hi All,
I vote for removing DMA as BSD seems to have many and varied issues with
DMA in a number of situations.
--
Regards,
Hilton Travis Phone: +61 (0)7 3343 3889
(Brisbane, Australia) Phone: +61 (0)419 792 394
Manager, Quark IT http://www.quarkit.com.au
Quark AudioVisual http://www.quarkav.net
http://www.threatcode.com/ <-- its now time to shame poor coders
into writing code that is acceptable for use on today's networks
War doesn't determine who is right. War determines who is left.
> -----Original Message-----
> From: Chris Dickens [mailto:chris at object dash zone dot net]
> Sent: Tuesday, 10 August 2004 21:20
>
> I believe I've ran into this problem myself as well, but not
> on a net4801.
> I recently purchased a SanDisk 16MB CF card and a CF -> IDE
> adapter card and placed it into an Intel ISP1000 1U server
> and it would always boot the system the first time, and after
> setting any configuration setting and then rebooting, the
> card would be corrupt. The pipe would start spinning and
> then all of a sudden it would say there was no operating
> system or couldn't find a kernel or something to that effect.
> The ISP1000 is a 440BX based motherboard FYI. This
> particular one was loaded with a 600MHz Celeron CPU.
>
> I ended up wading through my closet and locating a 4GB IDE
> hard drive and using that instead. I would love to go back
> to the CF solution, so my vote is a definite yes to shutting
> off the DMA access if this will resolve the issue I ran into.
>
> --Chris
>
> -----Original Message-----
> From: Manuel Kasper [mailto:mk at neon1 dot net]
> Sent: Monday, August 09, 2004 12:09 PM
>
> In the light of recent DMA-related problem reports with
> SanDisk (and other) CF cards on net4801 and even generic PCs,
> I'm wondering if we should just turn off DMA completely in
> all images? The read/write activity (loading the image during
> boot and reading/writing the configuration) is so low that it
> shouldn't make any noticeable difference, and I've never
> heard that DMA ever worked better than PIO in terms of
> reliability (and performance doesn't count much here).
>
> What are your thoughts?
>
> - Manuel
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