Hi Kumar, All,
I've found that MSI work correctly with older kernels on my MPC8308RDB
board and don't work with newer ones. After bisecting I've found that
the source of the problem is commit 3da34aa:
commit 3da34aae03d498ee62f75aa7467de93cce3030fd
Author: Kumar Gala <ga...@kernel.crashing.org>
Date: Tue May 12 15:51:56 2009 -0500
powerpc/fsl: Support unique MSI addresses per PCIe Root Complex
Its feasible based on how the PCI address map is setup that the region
of PCI address space used for MSIs differs for each PHB on the same
SoC.
Instead of assuming that the address mappes to CCSRBAR 1:1 we read
PEXCSRBAR (BAR0) for the PHB that the given pci_dev is on.
Signed-off-by: Kumar Gala <ga...@kernel.crashing.org>
I can see BAR0 initialization for 85xx/86xx hardware but not for 83xx
neigher in the kernel nor in U-Boot (that makes me think that all 83xx
can be affected).
I'm not actually an PCI expert so I've just tried to write IMMR base
address to the BAR0 register from the U-Boot to get the correct address
but this doesn't help.
Please direct me how to init 83xx PCIE controller to make it compatible
with this patch.
Thanks in advance.
Regards, Ilya.
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