It is a fair question of which I do not have a nice answer.
I am working on fresh atapi-packet-generic engine but it is not a joy.
There are oddities like bus-phases or bus-states which their setup and
feeding of the DMA engine requires a more eligant hammer.
As much as I hate to concept of a DMA mempool, it looks like the direction
to follow. Games such as HOST<>DEVICE || feast<>famine of buffer streams
appear to be the norm to push vast amounts of atapi-dma. The alternative
is to have device level request queues and have the queues carry the SG or
PRD list for that portion.
I am open to suggestions for direction.
Cheers,
Andre Hedrick
LAD Storage Consulting Group
On Fri, 16 Aug 2002, Markus Plail wrote:
> Hi Andre!
>
> * Andre Hedrick writes:
> >It is out, require 2.4.19 plus -ac4
> >http://www.linuxdiskcert.org/ide-2.4.19-ac4.11.patch.bz2
>
> How are chances that DMA will get enabled for higher blocksizes
> (c2scans, DAO cd writing, audio CD ripping)?
> Is there any progress on that field in 2.5.* kernels?
>
> regards
> Markus
>
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