Re: DMA not works in Linux 2.6.12, but in Windows works fine.

[Jeff Garzik <jgarzik@pobox.com>]

Helge Pomorin wrote:
> 2005/5/23, Sergey Vlasov <vsu@altlinux.ru>:
>
> > This is a known problem - if the Intel ICH5/6 controller is used in
> > combined mode (SATA mapped to legacy IDE ports), DMA for PATA devices
> > does not work.  If you reconfigure the controller in BIOS to not use the
> > combined mode (so that the SATA part becomes a separate PCI device), DMA
> > for PATA devices will work fine.
> >
> > To IDE developers: Is something planned to work around this problem?
> > AFAIK, there are some machines where BIOS does not provide an option to
> > turn off the combined mode.
>
> Hi there,
> Got similar looking problem here,

It's completely different.


> i cant change sata modes or something alike...

That doesn't matter under SATA.


> I get *disabling irq* message with Intel ICH 4 / SIL 3112 A rev 01
> SATA Controller on Asus P4G8X Deluxe board (P4 Northwood, Intel
> *granite bay* E702 Chipsets) at distros which using newer kernel than

This is a totally different problem.

	Jeff



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