Very Computer

Hiya,

Is it all possible to do any programming regards the PCI bus? I've seen
the <linux/pci.h> file which contains everything I need, but knocking up
a small program just lists errors about not finding these functions, and
I haven't a clue which libs, if any, contain them.

The only reason I ask, is that I have finally found how to get my
blasted soundcard working under linux, (an ESS 1978). All I need to do
is change one bit in the PCI configuration space to enable the SB legacy
support.

Can anyone offer any advice? If I can't do it this way, are there any
alternatives?

Thanks in advance

Matt

Quote:>The only reason I ask, is that I have finally found how to get my
>blasted soundcard working under linux, (an ESS 1978). All I need to do
>is change one bit in the PCI configuration space to enable the SB legacy
>support.

>Can anyone offer any advice? If I can't do it this way, are there any
>alternatives?

setpci / lspci may do what you need

part of the pciutils package under debian.

Phil
--
nosig

No libs, the procedures in there are part of the kernel, so
you can't get them in a user mode program.  You need to write
a kernel module (not really difficult, but too much to type
in here.  Alasandro Rubini's book is the answer, or maybe
the Kernel Hackers Guide.

--

Programmer in Chief, Free Computer Shop <http://www.free-comp-shop.com>
         ---  Food, Shelter, Source code.  ---

Quote:> No libs, the procedures in there are part of the kernel, so you can't
> get them in a user mode program.  You need to write a kernel module

Correct, but in this case, as another poster pointed out, the user-mode
program `setpci' can already do what he wants.

--
Peter Samuelson
<sampo.creighton.edu!psamuels>

| Correct, but in this case, as another poster pointed out, the user-mode
| program `setpci' can already do what he wants.

Thanks for the help everyone. I got the pciutils compiled and using a
PCI config viewer under DOS I managed to knock up a script that changed
the register(s), (I noticed a few more that needed fiddling with), so
that the config space was identical under both OS'. But whenever I try
to insert the sb module, linux complains about the IRQ conflicting but
it still continues. Sound won't work, I get DMA timeouts, but the mixer
_does_ work 'cos CD's play OK. I even tried warm-booting from DOS, the
module inserts with no warnings, but I get no other benefits.

Looks like I _will_ have to write a module, I'll do it for the cards
native mode if anything, ALSA already supports a similar ESS card so
there can't be much work needed, (fingers crossed).

Thanks again,

Matt