From: <pa...@pa...> - 2009-04-07 17:00:46
|
Dave Hylands wrote: >> Specifically, I want to access the CCNT, USEREN, and PMNC registers of the > > What can do, is do is mmap in the register space into user space and Hmmm, on PXA these registers were accessed with special instructions MCR and MRC from a coprocessor. A quick look at the OMAP docs suggests the situation is the same there. So mmap will not work. I do not think it is possible at all to access these registers from userspace. It might be possible to use them indirectly with OPROFILE, though. Pascal |