[tlinux-users:08610] Re: 82801 GBM/GHM (ICH7 Family) SATA IDE Controller

The problem with your kernel config is:

--------------
#
# ATA/ATAPI/MFM/RLL support
#
CONFIG_IDE=y
--------------

You should remove IDE support and just let the SATA driver
handle everything (I've had trouble with DVD playback being
jumpy on Gentoo that was fixed by switching to the ICH7
driver instead of the generic PATA driver that can't do
DMA).  The SATA driver for the ICH7 will also handle PATA. 
The PIIX chipset option doesn't support the ICH7.

You'll find that your DVD drive becomes /dev/sr0 instead of
/dev/hdc and you may find /dev/cdrom becoming /dev/cdrom1
or something like that as well but it should enable DMA.

--- Zack <[email protected]> wrote:

> Hi all,
> 
> I'm getting Slackware 12 working on the Satellite
> P205-S6307
> which has PCI-Xpress. I'm making some progress, however
> I'm having trouble with a few items and I was wondering
> if
> anyone has encountered these:
> 
> 1. The Intel Corporation 82801GBM/GHM (ICH7 Family) SATA
> IDE Controller 
> (rev 02)
> is not letting me enable either DMA or 32bit access
> on this system. This limits read access to about 43MB/sec
> according
> to hdparm.
> 
> 2. Similarly the DVD/RW driver isn't supporting DMA, I am
> guessing it's
> the same controller. This limits DVD writing to about
> 1.8X
> after I turn on 32bit access with hdparm -c1 /dev/hdc.
> 
> Summary of my work so far:
> http://home.comcast.net/~fbui/Linux-on-ToshibaP205.html
> 
> Thanks,
> Zack
> 
> 
> 
> 
> 



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