Re: [2.1.84] no IDE DMA (was [2.1.79] no IDE DMA)

mlord (mlord@pobox.com)
Mon, 02 Feb 1998 19:45:42 -0500

B. James Phillippe wrote:
..
> > > Bus 0, device 7, function 0:
> > > ISA bridge: Intel 82371FB PIIX ISA (rev 2).
> > > Medium devsel. Fast back-to-back capable. Master Capable. No bursts.
..
> > Looks similar to the Intel Advanced/ZP problem -- the IDE interface is
> > not being found. I have appended two patches which attempt to work around
> > the problem; is the IDE driver able to detect the PIIX with one of them?
>
> Hello Gadi,
>
> I've tried both patches and DMA still does not work on my system.
> Again, my system is a Tyan Titan III with the above shown PCI IDE chipset.
> This box has been running with DMA under all previous kernels (was it
> 2.1.76 it broke at, I think?) without a problem. I'm running 2.1.84 now
> and still no DMA. When I try to set it with hdparm, it says "Operation not
> permitted". And at boot time, when the kernel lists the hard drives in the
> system, it doesn't say "DMA" like it used to.

Pardon the obvious, but..

Does your kernel actually include the *new* IDEDMA and IDEPCI kernel
config options?

-- 
mlord@pobox.com
The Linux IDE guy