3 files changed, 33 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index df6f0b49836b..a6d8de01194a 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -2820,6 +2820,7 @@ extern int radeon_ttm_tt_set_userptr(struct radeon_device *rdev,
 				     uint32_t flags);
 extern bool radeon_ttm_tt_has_userptr(struct radeon_device *rdev, struct ttm_tt *ttm);
 extern bool radeon_ttm_tt_is_readonly(struct radeon_device *rdev, struct ttm_tt *ttm);
+bool radeon_ttm_tt_is_bound(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
 extern void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base);
 extern void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc);
 extern int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon);
diff --git a/drivers/gpu/drm/radeon/radeon_mn.c b/drivers/gpu/drm/radeon/radeon_mn.c
index eb46d2220236..97b9b6dd6dd3 100644
--- a/drivers/gpu/drm/radeon/radeon_mn.c
+++ b/drivers/gpu/drm/radeon/radeon_mn.c
@@ -53,7 +53,7 @@ static bool radeon_mn_invalidate(struct mmu_interval_notifier *mn,
 	struct ttm_operation_ctx ctx = { false, false };
 	long r;
 
-	if (!bo->tbo.ttm || !ttm_bo_tt_is_bound(&bo->tbo))
+	if (!bo->tbo.ttm || !radeon_ttm_tt_is_bound(bo->tbo.bdev, bo->tbo.ttm))
 		return true;
 
 	if (!mmu_notifier_range_blockable(range))
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index c6c1008fefd2..fc8bbca28b34 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -420,6 +420,7 @@ struct radeon_ttm_tt {
 	uint64_t			userptr;
 	struct mm_struct		*usermm;
 	uint32_t			userflags;
+	bool bound;
 };
 
 /* prepare the sg table with the user pages */
@@ -513,6 +514,13 @@ static void radeon_ttm_tt_unpin_userptr(struct ttm_bo_device *bdev, struct ttm_t
 	sg_free_table(ttm->sg);
 }
 
+static bool radeon_ttm_backend_is_bound(struct ttm_tt *ttm)
+{
+	struct radeon_ttm_tt *gtt = (void*)ttm;
+
+	return (gtt->bound);
+}
+
 static int radeon_ttm_backend_bind(struct ttm_bo_device *bdev,
 				   struct ttm_tt *ttm,
 				   struct ttm_resource *bo_mem)
@@ -523,6 +531,9 @@ static int radeon_ttm_backend_bind(struct ttm_bo_device *bdev,
 		RADEON_GART_PAGE_WRITE;
 	int r;
 
+	if (gtt->bound)
+		return 0;
+
 	if (gtt->userptr) {
 		radeon_ttm_tt_pin_userptr(bdev, ttm);
 		flags &= ~RADEON_GART_PAGE_WRITE;
@@ -542,6 +553,7 @@ static int radeon_ttm_backend_bind(struct ttm_bo_device *bdev,
 			  ttm->num_pages, (unsigned)gtt->offset);
 		return r;
 	}
+	gtt->bound = true;
 	return 0;
 }
 
@@ -550,10 +562,14 @@ static void radeon_ttm_backend_unbind(struct ttm_bo_device *bdev, struct ttm_tt
 	struct radeon_ttm_tt *gtt = (void *)ttm;
 	struct radeon_device *rdev = radeon_get_rdev(bdev);
 
+	if (!gtt->bound)
+		return;
+
 	radeon_gart_unbind(rdev, gtt->offset, ttm->num_pages);
 
 	if (gtt->userptr)
 		radeon_ttm_tt_unpin_userptr(bdev, ttm);
+	gtt->bound = false;
 }
 
 static void radeon_ttm_backend_destroy(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
@@ -689,12 +705,27 @@ int radeon_ttm_tt_set_userptr(struct radeon_device *rdev,
 	return 0;
 }
 
+bool radeon_ttm_tt_is_bound(struct ttm_bo_device *bdev,
+			    struct ttm_tt *ttm)
+{
+#if IS_ENABLED(CONFIG_AGP)
+	struct radeon_device *rdev = radeon_get_rdev(bdev);
+	if (rdev->flags & RADEON_IS_AGP)
+		return ttm_agp_is_bound(ttm);
+#endif
+	return radeon_ttm_backend_is_bound(ttm);
+}
+
 static int radeon_ttm_tt_bind(struct ttm_bo_device *bdev,
 			      struct ttm_tt *ttm,
 			      struct ttm_resource *bo_mem)
 {
+#if IS_ENABLED(CONFIG_AGP)
 	struct radeon_device *rdev = radeon_get_rdev(bdev);
+#endif
 
+	if (!bo_mem)
+		return -EINVAL;
 #if IS_ENABLED(CONFIG_AGP)
 	if (rdev->flags & RADEON_IS_AGP)
 		return ttm_agp_bind(ttm, bo_mem);