drm/radeon: fix HD6790, HD6570 backend programming
authorJerome Glisse <jglisse@redhat.com>
Thu, 31 May 2012 23:00:24 +0000 (19:00 -0400)
committerBen Hutchings <ben@decadent.org.uk>
Sun, 10 Jun 2012 13:41:54 +0000 (14:41 +0100)
commit 95c4b23ec4e2fa5604df229ddf134e31d7b3b378 upstream.

Without this bit sets we get broken rendering and
lockups.

fglrx sets this bit.

Bugs that should be fixed by this patch :
https://bugs.freedesktop.org/show_bug.cgi?id=49792
https://bugzilla.kernel.org/show_bug.cgi?id=43207
https://bugs.freedesktop.org/show_bug.cgi?id=39282

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
drivers/gpu/drm/radeon/evergreen.c

index 7777c2f..dac178b 100644 (file)
@@ -2116,9 +2116,9 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
                WREG32(CC_SYS_RB_BACKEND_DISABLE, rb);
                WREG32(GC_USER_RB_BACKEND_DISABLE, rb);
                WREG32(CC_GC_SHADER_PIPE_CONFIG, sp);
-        }
+       }
 
-       grbm_gfx_index |= SE_BROADCAST_WRITES;
+       grbm_gfx_index = INSTANCE_BROADCAST_WRITES | SE_BROADCAST_WRITES;
        WREG32(GRBM_GFX_INDEX, grbm_gfx_index);
        WREG32(RLC_GFX_INDEX, grbm_gfx_index);