On Wed, Feb 20, 2002 at 05:36:05PM -0800, Matthew Dharm wrote:
> Now, I'm pretty sure this has something to do with the initcall to
> set_io_port_base() and ioremap(), which are in my setup.c (copied from
> linux/arch/mips/gt64120/momenco_ocelot/setup.c and modified). Without
> that bit of code at the bottom of that function, I don't even get
> this -- it just crashes. So I know I need this code, but I'm just not
> certain what/how I should be using it...
> My initial guess is that it's used to map some virtual address space
> onto the physical addresses needed to actually generate PCI I/O
> transactions, but that's just a guess. If that's right, then the code
> I'm using _should_ work... I call ioremap() with the physical base and
> size, and then set_io_port_base() using the result of ioremap().
That is exactly the intended use.