Re: [gentoo-amd64] dma?

[Gavin Seddon]

Brett, Hi
Yes I did this and Hemmann suggested the alternative in the inst. doc.
Will reboot asap.
Thanks
Gaviin



On Tue, 2006-07-11 at 06:54 -0500, Brett Johnson wrote:
> On Tue, Jul 11, 2006 at 11:58:04AM +0100, Gavin Seddon wrote:
> > Yes,
> > I tried this and,
> > ' hdparm -d1 -X /dev/hda
> >
> > /dev/hda:
> >  setting using_dma to 1 (on)
> >  HDIO_SET_DMA failed: Operation not permitted
> >  setting xfermode to 0 (default PIO mode)
> >  using_dma    =  0 (off)
> > linuxstation mbpssgms # whoami
> > root'
>
> That most likely means you are missing the proper IDE driver in your
> kernel and the system has defaulted back to the "generic" IDE driver.
> What you want to do is use "/usr/sbin/lspic" to determine which IDE
> chipset you have in the system and make sure that you have the
> correct driver compilied in the kernel.
>
> As an example, I have an older Dell with the following IDE chipset
> (output from lspci):
> 00:1f.1 IDE interface: Intel Corporation 82801AA IDE (rev 02)
>
> So in the kernel config I have the following options:
>
> Device Drivers  --->
>
> ATA/ATAPI/MFM/RLL support  --->
>
> <*> ATA/ATAPI/MFM/RLL support
> <*>   Enhanced IDE/MFM/RLL disk/cdrom/tape/floppy support
> <*>     Include IDE/ATA-2 DISK support
> [*]     Use multi-mode by default
> <M>     Include IDE/ATAPI CDROM support
> [*]     PCI IDE chipset support
> [*]       Sharing PCI IDE interrupts support
> [*]       Generic PCI bus-master DMA support
> [*]         Use PCI DMA by default when available
> <*>         Intel PIIXn chipsets support
>
> The last three options are the most important for getting DMA to work on
> the dirve, and the last option will vary based on the chipset in your
> system.
>
> Brett
-- 
Dr Gavin Seddon
Pharmacy and Pharmaceutical Sciences
University of Manchester
Oxford Road
M13 9PL
UK




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