I/O port access ???
kraxel at goldbach.in-berlin.de
Fri Feb 5 08:49:42 EST 1999
On Thu, 4 Feb 1999, Geert Uytterhoeven wrote:
> On Thu, 4 Feb 1999, Gerd Knorr wrote:
> > Is there some way to access the I/O ports, for example the VGA registers
> > of some graphics board (assuming the I/O ports are enabled in the PCI
> > config space) on ppc boxes? How can I do that with Linux? From kernel
> > space? From user space?
> You have to mmap() /dev/mem. Which address depends on the type of PPC box.
> You can find the correct addres in <asm/io.h> (*_ISA_IO_BASE).
Can I easily figure out the machine type (at runtime) somehow? Parse
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