On Thu, Jan 29, 2009 at 09:25:18PM +0100, Laurent Vivier wrote:
This series of patch allows to use powermac mac-io IDE interface by
implementing
DB-DMA. Linux 2.6.18 seems to not be able to use correctly mac-io IDE
interface
without DMA.
[PATCH 1/2] mac-io DB-DMA support
[PATCH 2/2] IDE DB-DMA support
Thanks a lot for your work. I have tried it, but I have a few problems
with it. I tried with OpenBIOS revision 431.
With a 2.6.18 kernel (Debian Etch), it works without problem, I get a
about 13MB/s, compared to 1.5MB/s without DMA and about 21MB/s with
the
CMD646.
With the 2.6.26 kernel (Debian Lenny), I get 1.2MB/S only. Moreover,
trying an installation with a CD-ROM, the VM freeze while loading udeb
packages. Note that the DMA is correctly detected and actived.
Given that those patches really improve the support for the mac-io
IDE,
I have merged them with one minor change to the first one
(s/conditionnal/conditional/g).