Tabris wrote:
> On Tuesday 29 April 2003 04:15 pm, Andre Hedrick wrote:
>
>>The Promise chipset use a second DMA engine at offset 0x24 respective
>>of the channel. Mixing an ATA and ATAPI on that channel is almost
>>impossible to make the corner cases work. Next, if there us a 48-bit
>>ATA plus ATAPI on the channel popping between the two enignes does
>>not look sane at all because one has to swithc the location of the
>>hwif->sgtable.
>
>
> Ok... moved the HDDs from the VIA secondary to the PDC primary (tried
> moving both, but it seems that ide=reverse doesn't work), and the
> CD-R/W to the VIA secondary.
>
> good news, regular reads seem to use the DMA engine. bad news, CDDA
> ripping (using cdparanoia) does not.
>
> is this a known issue? (i thought that CDDA ripping had been fixed)
>
Have you tried Andrew Morton's ide-cd dma patch? It seems to have
worked well for me, at least. A summary of what it does is included at
the top of the patch.
http://www.zipworld.com.au/~akpm/linux/patches/2.4/2.4.20/ide-akpm.patch
Perhaps Alan might considier it for the -rc2 ac patch?
Cheers,
Nicholas
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This archive was generated by hypermail 2b29 : Wed Apr 30 2003 - 22:00:33 EST