Fillod Stephane wrote: >>I am trying to access a hardware timer implemented in an FPGA from >>user space. I implemented a simple mmap() functionality (taken from >>Runbini's Linux Device Driver) > > Please refer to "11.13. Accessing peripherals from user space" > in the excellent FAQ from DENX's TWiki at : > > http://www.denx.de/twiki/bin/view/PPCEmbedded/DeviceDrivers#Section_Accessin > gPeripheralsFromUserSpace > > There's no need to implement kernel side stuff. /dev/mem is enough.
Oh! Nice. Thanks a million! It actually works (on my ARM board!) So why will people need their own mmap() driver if this kind of things can be done via /dev/mem ??? And: Can I mmap() 32MB of peripheral memory into user space? -- Steven Scholz imc Measurement & Control imc Me?systeme GmbH Voltastr. 5 Voltastr. 5 13355 Berlin 13355 Berlin Germany Deutschland ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
