Date: Sat, 26 Sep 2009 14:36:41 -0500 From: Robert Noland <rnoland@FreeBSD.org> To: Richard Kolkovich <sarumont@sigil.org> Cc: freebsd-x11@freebsd.org Subject: Re: HD4550 DRI issues Message-ID: <1253993801.2048.295.camel@balrog.2hip.net> In-Reply-To: <1253977337.2048.17.camel@balrog.2hip.net> References: <20090924145417.GA2539@magus.portal.sigil.org> <1253812603.2031.1528.camel@balrog.2hip.net> <1253814434.2031.1561.camel@balrog.2hip.net> <20090924181427.GD2539@magus.portal.sigil.org> <20090925143910.GD61689@divination.portal.sigil.org> <1253897144.2065.150.camel@balrog.2hip.net> <20090925173416.GF61689@divination.portal.sigil.org> <1253915723.2145.53.camel@balrog.2hip.net> <20090926001158.GA42914@divination.portal.sigil.org> <1253925689.2065.81.camel@balrog.2hip.net> <20090926045706.GB42914@divination.portal.sigil.org> <1253977337.2048.17.camel@balrog.2hip.net>
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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 ring=0x00000028300000, contents=0x0000000000000000 robert. -- Robert Noland <rnoland@FreeBSD.org> FreeBSD
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