HD4550 DRI issues
rnoland at FreeBSD.org
Sat Sep 26 19:36:49 UTC 2009
On Sat, 2009-09-26 at 10:02 -0500, Robert Noland wrote:
> On Fri, 2009-09-25 at 23:57 -0500, Richard Kolkovich wrote:
> > On Fri, Sep 25, 2009 at 07:41:29PM -0500, Robert Noland wrote:
> > > We might go down that path... But, I've had an idea. I'll try and whip
> > > up a test client that bypasses all of X and just exercises drm. We can
> > > see if it still seems to corrupt things. The evidence so far suggests
> > > that it should, but it should rule out any races. One thing you might
> > > try as a test is to disable SMP just to see if that helps.
> > >
> > Disabling SMP did not help. I'll await the test client...
> Ok, attached is a really simple client that will allocate 32MB of
> scatter-gather memory and map a 1MB ring buffer out of that. The
> "contents" values should always be 0. Build the client with:
> gcc -O2 -pipe -I/usr/local/include -I/usr/local/include/drm
> -L/usr/local/lib -ldrm -o drm-test drm-test.c
> To perform the test, you will need to boot up in console. (No X)
> Manually kldload the radeon driver and then as root execute drm-test.
Since nothing that we are doing here is actually device specific, I
loaded this up on the VIA VX800 board, which is an i386 build.
Everything works fine. Sample *good* output:
gopher% gcc -O2 -pipe -I/usr/local/include -I/usr/local/include/drm
-L/usr/local/lib -ldrm -o drm-test drm-test.c
gopher% sudo ./drm-test
Allocated 32MB with handle=0x00000000e82b8000
Added 1024KB map for ring buffer with handle=0x00000000e82b8000
Robert Noland <rnoland at FreeBSD.org>
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