RE: ioremap on powerpc question

I wrote:

Hmm, I continue to have difficulties...

Matt Porter wrote:

quoted

On Mon, Jul 15, 2002 at 01:58:21PM -0500, Cameron, Steve wrote:

quoted

It blows up with a machine check.

[...]

quoted

Try this patch:

[...]

when I attempt to DMA into the physical address with my PCI device,
it is as if the DMA never occurs.  Prior to the DMA, I fill the
buffer with 0x55's, and after the DMA, the 0x55's are still there.

[...].

BTW, my device seems happy with the physical addresses I pass it,

[...]
And now I see, I have (at least) two errors, one hiding the other.  In fact
my PCI device was _not_ happy with those addresses at all, (because they
were wrong, I botched the swapping) and also my code to check for this device's
unhappiness happened to be broken...

So, now I think ioremap is likely now working with this patch.

Thanks, and sorry for all the noise.

(still not sure about my problems with alloc_bootmem_pages, but
not too worried about it now.)

-- steve


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