Re: PPC440EP/Yosemite PCI misbehavior

Hi David,

On Saturday 14 January 2006 05:37, David Hawkins wrote:

I'll go and play with the 440EP DMA controller and see if I can get
that to burst to the PCI bus.

quoted

access to PCI I/O space causes a machine check exception.

I still get this in 2.6.15, but Wolfgang Denx indicated that
they'd tested PCI I/O pretty thoroughly, so I'm inclined to
believe that its my driver that is at fault. I'll do a little
more digging on that one.

I have to admit, that PCI I/O can't have worked until now on 
Yosemite/Yellowstone. I just found a bug in 
arch/ppc/platforms/4xx/yosemite.h:

-#define YOSEMITE_PCI_IO_BASE		0x00000000e0000000ULL
+#define YOSEMITE_PCI_IO_BASE		0x00000000e8000000ULL

Please give it a try and let me know if the problem is fixed.

Best regards,
Stefan