Re: [QUESTION] 440EPx with PCI to PCIe bridge error

Steven A. Falco wrote:

Benjamin Herrenschmidt wrote:

quoted

quoted

Here is a complete startup log, with debug turned on as you requested.
This is still against 2.6.27.9, as it will take me a little time to
build 2.6.28.  Hopefully, this log will be useful in the meantime.

Can you add "debug" to your kernel command line option or send the
output of the "dmesg" command please ?

Time to answer my own questions.  U-boot is missing a setting for
CFG_PCI_MEMSIZE in the sequoia.h file.  Four 256MB TLBs are reserved,
but since CFG_PCI_MEMSIZE is not set, the size defaults to 256MB,
rather than the 1GB that is allocated.

So, I added:

#define CFG_PCI_MEMSIZE 0x40000000 /* 1GB */

to sequoia.h.  Now U-boot uses all four TLBs, and that error message
goes away.

But this has no effect on Linux.  So, I also changed the sequoia.dts
to make the outbound range larger, and now Linux is happy too.  I now
have ranges for the device:

# cat 0000:01:00.0/resource
0x0000000190000000 0x000000019007ffff 0x0000000000020200
0x0000000180000000 0x000000018fffffff 0x0000000000020200

	Steve