Re: Linux 2.4.21-rc3 : IDE pb on Alpha

[Willy Tarreau]

On Tue, May 27, 2003 at 06:04:03PM +0400, Ivan Kokshaysky wrote:
> On Tue, May 27, 2003 at 02:31:52PM +0200, Willy Tarreau wrote:
> > Sorry, I pasted the .config that I used just after, and which allowed me to
> > boot. Later I set CONFIG_BLK_DEV_ALI15X3 again and CONFIG_BLK_DEV_IDEDMA_PCI,
> > but I left CONFIG_IDEDMA_PCI_AUTO disabled. I now can boot and enable DMA
> > later. That's weird, but it works.
> 
> Perhaps not that weird. From my experience, ALi DMA is sensitive to
> some of "PIO timings". That is, if SRM hasn't initialized the chipset
> properly (on Nautilus it has, BTW), DMA won't work. When you boot with
> DMA disabled, driver has to set right PIO mode, so you can safely
> enable DMA later.
> 
> Can you (and Jason) try this patch with CONFIG_IDEDMA_PCI_AUTO=y?

Compilation in progress, but it will wait for me to get in touch with the
machine to reboot it (probably this evening).

Cheers,
Willy