drm/radeon/kms: rs6xx/rs740: clamp vram to aperture size
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
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 00bc71f..c4bdfaf 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -306,9 +306,7 @@
void rs600_gpu_init(struct radeon_device *rdev)
{
- /* FIXME: HDP same place on rs600 ? */
r100_hdp_reset(rdev);
- /* FIXME: is this correct ? */
r420_pipes_init(rdev);
/* Wait for mc idle */
if (rs600_mc_wait_for_idle(rdev))
@@ -317,7 +315,6 @@
void rs600_vram_info(struct radeon_device *rdev)
{
- /* FIXME: to do or is these values sane ? */
rdev->mc.vram_is_ddr = true;
rdev->mc.vram_width = 128;
@@ -326,6 +323,12 @@
rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);
rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);
+
+ if (rdev->mc.mc_vram_size > rdev->mc.aper_size)
+ rdev->mc.mc_vram_size = rdev->mc.aper_size;
+
+ if (rdev->mc.real_vram_size > rdev->mc.aper_size)
+ rdev->mc.real_vram_size = rdev->mc.aper_size;
}
void rs600_bandwidth_update(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index 81b8efc..30913c3 100644
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -134,7 +134,7 @@
fixed20_12 a;
rs400_gart_adjust_size(rdev);
- /* DDR for all card after R300 & IGP */
+
rdev->mc.vram_is_ddr = true;
rdev->mc.vram_width = 128;
@@ -143,6 +143,13 @@
rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);
rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);
+
+ if (rdev->mc.mc_vram_size > rdev->mc.aper_size)
+ rdev->mc.mc_vram_size = rdev->mc.aper_size;
+
+ if (rdev->mc.real_vram_size > rdev->mc.aper_size)
+ rdev->mc.real_vram_size = rdev->mc.aper_size;
+
rs690_pm_info(rdev);
/* FIXME: we should enforce default clock in case GPU is not in
* default setup