On Fri, 2002-05-24 at 21:09, Linus Torvalds wrote:
> 
> 
> On Fri, 24 May 2002, Tim Smith wrote:
> >
> > Covering about 30 seconds prior to me hitting reset, so the card certainly
> > seems to be getting rather stuck, because 'done=N' doesn't increment over
> > that 30 seconds.
> 
> Hmm.. I don't know if it is related, but you can get both a Radeon-7500
> and a Radeon-8500 to lock up the X server completely even without any DRI,
> by just running the gatos server before you run the DRI server (without
> rebooting in between).
> 
> That lockup happens immediately on server startup for me, so clearly some
> case isn't initialized or handled correctly. It might be easier to debug
> than the DRI lockup, and it _might_ just be the same thing.

I think this was discussed in a sub-thread of the thread 'Bugfix for
br0ken DMA on r128 andpossibly radeonDMA functions' in January-February.
Quoting Vladimir Dergachev:



> On Wed, 30 Jan 2002, Jens Owen wrote:
> 
> > Vladimir Dergachev wrote:
> >
> > > Also, I can make drm driver work nice with older 2d drivers - as
> > > soon as someone will show me a way to tell the version of the 2d
> > > driver that is accessing the drm driver.
> >
> > How about using a new set of IOCTL numbers for the new
> > interface--then you'll know whether you have an old or new driver
> > accessing it.
> 
> Jens, it is not a new interface. It is simply a matter of moving AGP
> and framebuffer apertures within cards internal address space. If it
> is moved the buffers (texture, ring buffer, indirect, etc)  need to
> have their addresses adjusted. (that was the place where documentation
> was wrong.. it named those fields as "offsets" but they are absolute
> addresses). Once it is setup and the buffer addresses are ok
> everything goes in as before. But if any component gets the wrong idea
> and tells the card "go get a texture from the wrong place" it all
> locks up.


I guess the GATOS stuff should revert these changes when it gets
unloaded...


-- 
Earthling Michel D�nzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast

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