[tlinux-users:08611] Re: 82801 GBM/GHM (ICH7 Family) SATA IDE Controller

Thanks for that tip. Setting CONFIG_IDE=n did speed up the DVD writer.
Zack


> 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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