io.h and I/O port access from user space

[Geert Uytterhoeven]

On Tue, 5 Feb 2002, Jeffrey D. Kowing wrote:
> Has anyone in powerpc land used the isapnptools ?

Yes, I modifed it to work on my LongTrail, using the mmap() /dev/mem method.

> Specifically, I've got an inhouse 603ev/MPC106 board on a PC/104 form
> factor running a linuxppc 2.4.x kernel.  I've been using an Adastra
> NSP-104 PC/104 module as my network interface card.  That card,
> besides its ethernet chip, also has a Super I/O PC87338 chip that
> controls two serial ports (i.e. SCC1 and SCC2).  Naturally, I just had
> to use those two serial ports, and, of course, it doesn't have nice
> little jumpers to set IRQ and IO base addresses.  Instead, it wants to
> be configured using Plug-n-Play which I obviously know nothing about.
> Anyways, I thought, hey, I'll investigate by using this nifty
> isapnptools package.  Silly me.

Note that isapnptools didn't find anything ISA PnP on my box. My LongTrail has
the following ISA devices:
  - NS87308VUL Super I/O controller, so-called PnP, but only using device
    specific configuration, not generic ISA PnP
  - Crystal/Cirrus CS4236B audio, so-called PnP, but only using device specific
    configuration, not generic ISA PnP
  - one (so far unused) ISA slot

Probably it's similar for your 87338.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds


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