Matt Porter wrote: > On Fri, Feb 25, 2005 at 04:19:41PM -0500, Ralph Siemsen wrote: >>Will that work on the 440 where the devices sit above 4GB mark? Or must >>one rely on there being an existing TLB mapping to bring them into >>32-bit space?
EINVAL. mmap certainly didn't like the phys address of gpio. Tried that. > > > Ack...that's the one thing we are missing. :-/ I had forgotten > that driver/char/mem.c calls remap_pfn_range() directly rather > than io_remap_page_range(). Had it called the latter, we'd be OK > since the "bigphys" fixup could take place. We can fix /dev/mem to > call io_remap_page_range() when on ppc32 && 36-bit phys...other arches > do similar tricks in that driver. > Sounds like a plan, I'd be happy to test it out. > If everybody is happy with mmaping /dev/mem then we can go try that > route. > Thanx, Travis
