prospects for DMA support for SiS962(L) Southbridge?

Soeren Schmidt sos at spider.deepcore.dk
Tue Jun 17 10:04:03 PDT 2003


It seems Rich Morin wrote:
> I recently upgraded my motherboard and CPU, as:
> 
>    478 pin Celeron; 2.1 GHz
>    512 MB DDR DIMM (2 ea.)
>    SiS962(L) Southbridge
> 
> I then found that I couldn't boot the (FreeBSD 4.7) system, getting:
> 
>    ad0: READ command timeout tag=0 serv=0 resetting
>    ata0: resetting devices
> 
> After a bunch of Googling and some discussions on freebsd-questions,
> I decided to change line 90 of /usr/src/sys/dev/ataata-disk.c to:
> 
>      static int ata_dma = 0;
> 
> This works, but I suspect that it is slowing down my disk I/O quite a
> bit.  So, I would like to know the prospects for this controller being
> supported in FreeBSD any time soon.

It is supported in 5.1.

-Søren


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