> I don't seem to be able to port this to ppc460gt: on this architecture > the PCI register space can be mapped only to 36 bit address ranges > with nonzero top nibbles. But mmap() (at least the one I have in > 2.6.25) accepts only 32 bit values for addresses, hence there is no > way to map PCI space into user space.
In the past I've been able to use mmap64() on ppc440 to get at 36-bit addresses. As far as I know this should still work. Also you should be able to get at the BAR of a PCI device by using mmap() on a resource file under /sys/devices, eg something like /sys/devices/pci0000:00/0000:00:04.0/0000:0b:00.0/resource0 (where the bus numbers obviously depend on your system and the resource number depends on what BAR your device has registers in) - R. _______________________________________________ Linuxppc-embedded mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-embedded
