Sauro Salomoni (sauro@xxxxxxxxxxx) wrote: > Good morning > > I would like to know how I can use kernel space system calls (like > inb/outb) or macros (readb/writeb) in user space. Is it enough to just > use iopl(3)? > I'm working with a Lite5200 PowerPC, using denx 2.4.25 kernel, and I > need to write into several registers. But in "Linux Device Drivers", by > Alessandro Rubini, it's said that iopl is intel specific, although in > the man page it's said it's LINUX specific... It is not implemented for PPC : http://lxr.linux.no/source/arch/ppc64/kernel/syscalls.c?v=2.4.26#L55 > Could anyone give a helping hand here? Maybe an example program on user > space iopl + inb/outb? Don't have any idea and hardware to test something. -- Amicalement/Regards Christophe Lucas - c.lucas@xxxxxxxxxxx - Registered User #271267 * GNU/Linux developer/network administrator * Membre du RotomaLUG (LUG de la région Rouennaise) (http://www.rotomalug.org) * http://odie.mcom.fr/~clucas/
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