On Mon, Sep 08, 2003 at 02:36:38PM -0700, Brian Kuschak wrote: > > I think the virt_to_phys() function is incorrect for > PPC440. It should call iopa for all 4xx, not only the > 405. By chance, it happens to work currently if the > address is in SDRAM, but is always incorrect for > ioremapped addresses. virt_to_bus() does the right > thing. > > Also, to be correct, shouldn't this function return a > phys_addr_t rather than an unsigned long, as the > physical address is >32 bits on 44x?
Read IO-mapping.txt and DMA-mapping.txt PPC40x is incorrect. These APIs are valid only for system memory kernel addresses that are staticly mapped. Anything wanting a generic translation from virt->phys should call iopa() directly until somebody drives a generic translation API into the kernel. -Matt ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
