On Saturday 06 October 2007, Benjamin Herrenschmidt wrote:
> On Sun, 2007-10-07 at 00:47 +0400, Peter Lemenkov wrote:
> > Hello All!
> > I can't compile one small software title because of lack <sys/io.h>
> > and inb/outb macros. What sould I do to overcome this obstacle?
> >
> > My linux distro is Fedora 7 if it is matter.
>
> They don't exist in user space on non-x86. You have to do things
> differently. What is your software trying to do ? If it's trying to
> access a PCI device IO space, you probably want to mmap it in sysfs and
> write your own accessors with appropriate memory barriers.
All cases where I've seen application software use <sys/io.h>, there was
actually a full device driver in the kernel that already exported a
high-level interface to user space. If that's the case here, the application
should use that instead of sysfs.
Arnd <><
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