> An empty region of memory is where there exist no physical ram / io memory. > I can quote a real life example. > I had a pci bridge and some devices on the secondary side of the bridge. > I configured 1 MB > starting from 0x8000_0000 for the bridge. i.e, any access to this > address will fetch data from the pci devices > then I do a request_mem_region (0x80000000, 0x00100000, "pci_non_trans"); > An ioremap () on the returned address will give a virtual address which > can be used for accessing it. ioremap on the returned address??: addr = request_mem_region ( physical, ...); ioremap( addr, ... ) ???... first I thought the correct was the inverse: addr = ioremap(physical, ..); request_mem_region( addr, ...), but Thekkedath (if i understood him correctly; thanks Thekkedath) alerted me i must request_mem_region( physical, ...); but i am still thinking i must ioremap( physical, ...) ... Am I wrong (again?) ? - Riba -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
