Did you try mmap2. It probable is not in glibc so you will have to call it using syscall.
#include <sys/syscall.h> unsigned *pdata = (unsigned *)syscall(__NR_mmap2,0,0x100000,PROT_READ| PROT_WRITE,MAP_SHARED,fd, 0xe80000 ); The address is in page offsets that why the address is 0xe80000. On Tue, 2008-11-04 at 00:53 +0200, Felix Radensky wrote: > Ayman El-Khashab wrote: > > > > What works for me is using the mmap64 as in the following example to > > map the physical address, fd is the file descriptor for /dev/mem > > > > off64_t offset = static_cast<off64_t>(your physical address); > > void * const p = > > mmap64(0,256,PROT_WRITE|PROT_READ,MAP_SHARED,fd,offset); > > > > The only thing to note is that the address you pass should be aligned > > to the page boundry even though some devices are not. > > > > Thanks, Ayman. I've tried that, but I'm still getting the same error. > My physical address is 0xe80000000, length is 0x100000. > > Felix. > _______________________________________________ > Linuxppc-embedded mailing list > Linuxppc-embedded@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-embedded _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
