Configuration:
MPC8260
Linux 2.4.25
IPIPE 0.9-03
Xenomai 2.1 (latest SVN version)
IMMR = 0xF0000000
Background:
- Have Linux based device driver, providing SCC/FCC transparent
mode access
Problem:
I am new to Xenomai, and am quite exciting about the prospects of what
it can offer. A user mode device driver sounds like a *nice* dream, but
I ed
a few more details. I have a Xenomai task that is able to intercept
the the SCC2 interrupts, but now I need to figure out how to access the
memory based MPC8260 registers.
What is needed for a user mode Xenonmai task to access the MPC8260
register which live in 0xf00000000..0xf0020000? I tried using
rt_misc_get_io_region(), but didn't get too far. I think this routine
is designed to access I/O space, which doesn't exist on PPC processor.
Should I be using the mmap() system call? Or, is there a better
approach?
In kernel space, I have no trouble accessing these registers.
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