Date: Thu, 23 Dec 1999 03:15:42 -0800 (PST) From: Julian Elischer <julian@whistle.com> To: Doug Rabson <dfr@nlsystems.com> Cc: Theo van Klaveren <havoc@Cal30B054.student.utwente.nl>, freebsd-hackers@FreeBSD.ORG Subject: Re: Question about GLIDE... Message-ID: <Pine.BSF.4.10.9912230312581.55593-100000@current1.whistle.com> In-Reply-To: <Pine.BSF.4.10.9912231110280.22613-100000@salmon.nlsystems.com>
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Theo,
Though doug didn't say so, I think the equivalent code in freeBSD is
if ((fd = open("/dev/io",O_RDWR,0)) == -1) {
ERROR...
}
you are asking for permission to do direct IO to IO ports from userland.
man 4 io
julian
On Thu, 23 Dec 1999, Doug Rabson wrote:
> On Wed, 22 Dec 1999, Theo van Klaveren wrote:
>
> > Hello,
> >
> > I am in the process of porting the GLIDE library to FreeBSD/i386
> > which is making good progress so far. My worst enemy has been the
> > build system itself and the huge amount if `#ifdef __linux__' in
> > the code.
> >
> > I am doing this in the light of the Quake source code
> > release, which I'd like to play natively with 3dFX hardware... :)
> > (for the interested: I have already gotten the server and X11
> > client to build, but I haven't tested them yet.)
> >
> > My question is about this particular piece of code in
> > swlibs/fxpci/pcilib/fxlinux.c, around line 70:
> >
> > if (iopl(3)<0) {
> > pciErrorCode = PCI_ERR_NO_IO_PERM;
> > return FXFALSE;
> > }
> >
> > Does anyone know what 'iopl(3)' is supposed to do,
> > and what it's equivalent on FreeBSD is (if at
> > all available)?
> >
> > The code this is in is about opening the /dev/3dfx device
> > (which is not available for FreeBSD so it'll fail anyway),
> > so I _could_ just remove it, but I'm not so certain...
> >
> > Also, IANAL, so could anyone tell me if the 3DFX license
> > permits me to publish my patches under a BSD-style license?
>
> I already ported the voodoo2 sources for Glide 2.x and Glide 3.x. You can
> find patches at:
>
> http://www.freebsd.org/~dfr/Glide-V2-2.53.diff
> http://www.freebsd.org/~dfr/Glide-V2-3.01.diff
>
> --
> Doug Rabson Mail: dfr@nlsystems.com
> Nonlinear Systems Ltd. Phone: +44 181 442 9037
>
>
>
>
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