On Thu, 2010-09-23 at 05:21 +0200, Chen, Tiejun wrote: > > I can get the device to show up on the host's PCI bus, I can > > This only ensure you can access the PCIe configure space. Not quite: I can also read the BARs that I program, and the memory behind them on the PPC. > > > program the inbound ATMUs such that the BARS are updated when > > the host (re-)scans them, but I cannot for the life of me get > > What value are configured to IntBound REGs? I can program them at run time via sysfs on the PPC's side, so there is no single set of values. However, I am pointing them at the PPC's RAM space, and as I stated above, I can read the PPC's RAM from the host side via the BARs.
> How do you configure OWS of PEXOWAR? > > I means you still access that if OWS is match the whole target memory > size even when '0' is as the internal platform address. As I understand it, not if the OWS is not correctly mapped on the PPC side - the PEX outbound ATMU's OWBAR must be mapped to a region of the PPCs address space that is also mapped to PEX in the LAW. The LAW does NOT indicate that PPC address 0 is mapped to the PEX. > > Out_be32 should be fine for atmu REGs. And also you can refe to the > function, setup_pci_atmu & setup_one_atmu, on the file, > arch/powerpc/sysdev/fsl_pci.c, to know how to access atmu REGs. Often > you should disable them, configure then enable/invoke atmu antry as > normal configuring sequent. I have tried disabling the outbound ATMU when I program it, with no change. I have looked at the functions you mention, and that is a part of my confusion, as they aren't doing anything different than I am. > > Additionally I'm a bit afraid your initial phase :) As you know PCIe > would be used as RC mode on Freescale PowerPC kernel. So I don't know if > you also drop this path on your kernel to conflict each other :) I have tried doing this under a kernel built without PCI support with no change. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
