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

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@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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