Subject: Re: README: change to PCI memory initialization on Tsunami
To: Jason R Thorpe <>
From: Manuel Bouyer <>
List: port-alpha
Date: 11/29/2000 21:30:49
On Tue, Nov 28, 2000 at 10:47:31PM -0800, Jason R Thorpe wrote:
> Folks...
> I've made a change in -current to how PCI memory is initialized on the
> Tsunami.  I made a similar change to the Irongate (UP1000) code, and it
> works fine there, but I don't have a Tsunami machine to test with.
> The change is to allocate the DMA windows (or, on the UP1000, the RAM
> itself, since it doesn't have DMA windows) out of the PCI memory extent
> map.  We need to do this because the Tsunami and Irongate don't have PCI
> memory windows -- the entire space is covered.  So, we need to make sure
> that devices don't get plopped in where the RAM is mapped into PCI memory
> space, otherwise Bad Things happen.
> Please try this change out on your Tsunami machines (HI MANUEL! :-)
> and let me know how it turns out.

Hum I guess the DS20 is a Tsunami then, rigth ? :)
I may be able to test it soon, I have to halt it anyway to change disks.

Manuel Bouyer <>