I am trying to port an application from ppc854x to ppc440. The application, among other things, maps register file of a PCI device into its memory space to gain direct access to the device. mmap() is used to accomplish the mapping.
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. Am I missing something and there is a way to map 36 bit address in 32 bit mode? Or maybe the kernel/library were not compiled properly and mmap() is supposed to accept 64 bit addresses? Any hints/suggestions will be highly appreciated, TIA, Vadim _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
