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>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index d9ffe1f56e8f..4e636de877b2 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -221,8 +221,9 @@ int radeon_bo_unpin(struct radeon_bo *bo)
 int radeon_bo_evict_vram(struct radeon_device *rdev)
 {
         if (rdev->flags & RADEON_IS_IGP) {
-                /* Useless to evict on IGP chips */
-                return 0;
+                if (rdev->mc.igp_sideport_enabled == false)
+                        /* Useless to evict on IGP chips */
+                        return 0;
         }
         return ttm_bo_evict_mm(&rdev->mman.bdev, TTM_PL_VRAM);
 }