Re: [Dri-devel] cmpxchg [Was: Slack 8.1 Radeon 8500 64MB]

SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 454-5900

That's debateable.

In current kernels, if it's not defined you've more than likely
built your kernel with i386 rather than i486 or later, because
building for i486 or later automatically turns on CONFIG_X86_CMPXCHG.
I understand that i386's don't have that instruction.=20

Maybe we need to put in our CVS something like...

#ifndef cmpxchg
#error "your kernel needs to be recompiled with CPU support for i486 and =
later"
#endif

Alan.

On Thu, Oct 31, 2002 at 09:52:12PM +0000, Jos=E9 Fonseca wrote:
> This user had troubles compiling the DRM from a snapshot due to missing
> definition of cmpxchg. Here are the relevant bits of the log:
>=20
> cc -O2 -Wall -Wwrite-strings -Wpointer-arith -Wcast-align
> -Wstrict-prototypes -Wnested-externs -Wpointer-arith -D__KERNEL__
> -DMODULE -fomit-frame-pointer -DCONFIG_AGP -DCONFIG_AGP_MODULE
> -DCONFIG_DRM_SIS -DEXPORT_SYMTAB -I/lib/modules/2.4.18/build/include -c
> radeon_drv.c -o radeon_drv.o
> In file included from radeon_drv.c:48:
> drm_lock.h: In function `radeon_lock_take':
> drm_lock.h:57: warning: implicit declaration of function `cmpxchg'
> ...
> ld -r radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o
> -o radeon.o
> /usr/X11R6/lib
> /lib/modules/2.4.18/kernel/drivers/char/drm/radeon.o: unresolved symbol
> cmpxchg
> /lib/modules/2.4.18/kernel/drivers/char/drm/radeon.o: insmod
> /lib/modules/2.4.18/kernel/drivers/char/drm/radeon.o failed
>=20
> The snapshots don't define cmpxchg, but drivers/char/drm/drmP.h on the
> RedHat kernel 2.4.18-17.8.0 defines it in case __HAVE_ARCH_CMPXCHG isn'=
t
> defined. Should we had this to CVS as well?
>=20
> Jos Fonseca
>=20
> ----- Forwarded message from Jos Fonseca <j_r...@ya...> ----=
-
>=20
> Date: Thu, 31 Oct 2002 17:53:57 +0000
> From: Jos Fonseca <j_r...@ya...>
> Subject: Re: [Dri-users] Slack 8.1 Radeon 8500 64MB
> To: Wojciech Banas <ban...@li...>
> Cc: dri...@li...
>=20
> Wojciech,
>=20
> On Thu, Oct 31, 2002 at 10:09:04AM -0600, Wojciech Banas wrote:
> >I have a Radeon 8500 AGP 64MB video card and Slackware Linux 8.1 clean=
=20
> >install. I'm trying to get DRI working with it. I have downloaded=20
> >radeon-20021022-linux.i386.tar.bz2 and run the ./install.sh as root. N=
ote:=20
> >X-Window works ok before installing DRI. Also if I don't install DRI f=
rom=20
> >dri.sourceforge.net /var/log/XFree86.0.log has a line saying:
> >(WW) RADEON(0): Direct rendering not yet supported on Radeon 8500
> >Does this mean that the X/DRI that comes with Slackware 8.1 does not=20
> >support DRI with Radeon 8500? i
>=20
> That's right. DRI support for Radeon 8500 is fairly recent and was not
> included in XFree86 4.2.x. It will be included in the next release.
>=20
> >Has the radeon-20021022-linux.i386.tar.bz2 install.sh script been test=
ed=20
> >with Slackware 8.1???=20
>=20
> Not necessarily. I've read your log and it seems that there may be some
> compatability problems with the kernel shipped in Slackware 8.1. I'm
> going to look it deeper.
>=20
> Another thing, the snapshot for Radeon 8500 is actually
> r200-*-linux.i386.tar.bz2.
>=20
> >I'm not a programmer, I have tried to install DRI with X 4.x.x probabl=
y 20=20
> >times and failed. So I just gave up and started to use MS-Windows 2000=
.=20
> >Now I'm trying DRI and Slackware again. For me to use Linux and DRI, t=
he=20
> >installation of DRI has to be as EASY as installing DirectX 8.1 on=20
> >MS-Windows 2000.  The install.sh script fails and gives an error messa=
ge=20
> >which I do not understand.  As an end user I understand/respond to err=
or=20
> >messages that say something like "Sorry, you don't have the latest ver=
sion=20
> >of DirectX installed, you must install DirectX 8.1 to run your silly g=
ame."
>=20
> The binary snapshots and the 'install.sh' script is meant primarily for
> advanced user (beta testers) to help testing the development. It is not
> meant to end users as things can and do get broken sometimes. (And it's
> not easy to predict what can fail and write nice error messages. On the
> other hand, what MS representative would give you free support for=20
> installing DirectX if you ran into problems?)
>=20
> Once the Radeon 8500 is released (XFree86 4.3.0), and Slackware include=
s
> DRI will be as EASY as the rest of your distribution instalation...
>=20
> >Slackware is my favorite Linux distirbution, but if I can't get DRI=20
> >installed, I will switch to RedHat. I think RedHat sets up DRI during=20
> >installation..., if not I will just keep on using Windows 2000 and try=
=20
> >this again in a few years.
>=20
> As said above, using RedHat will do no good as no Linux distribution
> includes DRI support Radeon 8500. (NOTE: most have DRI support already,
> just not for Radeon 8500).
>=20
> If you think you're better served with Windows 2000, then by all means
> keep using it and don't waste our time. If on the other hand you want h=
elp=20
> to
> face this difficulty you've encountered you can count with our full
> support.
>=20
> In any case, thanks for the error report.
>=20
> Jos Fonseca
>=20
> ----- End forwarded message -----
> __________________________________________________
> Do You Yahoo!?
> Everything you'll ever need on one web page
> from News and Sport to Email and Music Charts
> http://uk.my.yahoo.com
>=20
>=20
> -------------------------------------------------------
> This sf.net email is sponsored by: Influence the future=20
> of Java(TM) technology. Join the Java Community=20
> Process(SM) (JCP(SM)) program now.=20
> http://ads.sourceforge.net/cgi-bin/redirect.pl?sunm0004en
> _______________________________________________
> Dri-devel mailing list
> Dri...@li...
> https://lists.sourceforge.net/lists/listinfo/dri-devel