drm/radeon/kms: detect sideport memory on IGP chips
This detects if the sideport memory is enabled and
if it is VRAM is evicted on suspend/resume.
This should fix s/r issues on some IGPs.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index 4245218..1925894 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -56,6 +56,7 @@
rdev->mc.vram_location = G_000004_MC_FB_START(tmp) << 16;
rdev->mc.gtt_location = 0xffffffffUL;
r = radeon_mc_setup(rdev);
+ rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev);
if (r)
return r;
return 0;