[PATCH 01/17] vma-pin-fence-for-iomap

Chris Wilson chris at chris-wilson.co.uk
Fri Jun 30 23:11:03 UTC 2017


---
 drivers/gpu/drm/i915/i915_vma.c                  | 19 +++++++++++++++++++
 drivers/gpu/drm/i915/i915_vma.h                  |  7 +------
 drivers/gpu/drm/i915/selftests/i915_gem_object.c |  8 --------
 3 files changed, 20 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index 958be0a95960..d7330d3eeab6 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -278,6 +278,7 @@ int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level,
 void __iomem *i915_vma_pin_iomap(struct i915_vma *vma)
 {
 	void __iomem *ptr;
+	int ret;
 
 	/* Access through the GTT requires the device to be awake. */
 	assert_rpm_wakelock_held(vma->vm->i915);
@@ -301,9 +302,27 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma)
 	}
 
 	__i915_vma_pin(vma);
+
+	ret = i915_vma_get_fence(vma);
+	if (ret) {
+		__i915_vma_unpin(vma);
+		return IO_ERR_PTR(ret);
+	}
+	i915_vma_pin_fence(vma);
+
 	return ptr;
 }
 
+void i915_vma_unpin_iomap(struct i915_vma *vma)
+{
+	lockdep_assert_held(&vma->obj->base.dev->struct_mutex);
+
+	GEM_BUG_ON(vma->iomap == NULL);
+
+	i915_vma_unpin_fence(vma);
+	i915_vma_unpin(vma);
+}
+
 void i915_vma_unpin_and_release(struct i915_vma **p_vma)
 {
 	struct i915_vma *vma;
diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
index 4a673fc1a432..15e86e50a825 100644
--- a/drivers/gpu/drm/i915/i915_vma.h
+++ b/drivers/gpu/drm/i915/i915_vma.h
@@ -319,12 +319,7 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma);
  * Callers must hold the struct_mutex. This function is only valid to be
  * called on a VMA previously iomapped by the caller with i915_vma_pin_iomap().
  */
-static inline void i915_vma_unpin_iomap(struct i915_vma *vma)
-{
-	lockdep_assert_held(&vma->obj->base.dev->struct_mutex);
-	GEM_BUG_ON(vma->iomap == NULL);
-	i915_vma_unpin(vma);
-}
+void i915_vma_unpin_iomap(struct i915_vma *vma);
 
 static inline struct page *i915_vma_first_page(struct i915_vma *vma)
 {
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_object.c b/drivers/gpu/drm/i915/selftests/i915_gem_object.c
index 8f011c447e41..1b8774a42e48 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_object.c
@@ -251,14 +251,6 @@ static int check_partial_mapping(struct drm_i915_gem_object *obj,
 			return PTR_ERR(io);
 		}
 
-		err = i915_vma_get_fence(vma);
-		if (err) {
-			pr_err("Failed to get fence for partial view: offset=%lu\n",
-			       page);
-			i915_vma_unpin_iomap(vma);
-			return err;
-		}
-
 		iowrite32(page, io + n * PAGE_SIZE/sizeof(*io));
 		i915_vma_unpin_iomap(vma);
 
-- 
2.13.2



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