1 files changed, 24 insertions, 38 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index c3c49bc4d2ac..693ee69a4715 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -41,6 +41,7 @@
 #include <linux/intel-iommu.h>
 #include <linux/kref.h>
 #include <linux/pm_qos.h>
+#include <linux/reservation.h>
 #include <linux/shmem_fs.h>
 
 #include <drm/drmP.h>
@@ -2246,21 +2247,12 @@ struct drm_i915_gem_object {
 	struct list_head batch_pool_link;
 
 	unsigned long flags;
-	/**
-	 * This is set if the object is on the active lists (has pending
-	 * rendering and so a non-zero seqno), and is not set if it i s on
-	 * inactive (ready to be unbound) list.
-	 */
-#define I915_BO_ACTIVE_SHIFT 0
-#define I915_BO_ACTIVE_MASK ((1 << I915_NUM_ENGINES) - 1)
-#define __I915_BO_ACTIVE(bo) \
-	((READ_ONCE((bo)->flags) >> I915_BO_ACTIVE_SHIFT) & I915_BO_ACTIVE_MASK)
 
 	/**
 	 * Have we taken a reference for the object for incomplete GPU
 	 * activity?
 	 */
-#define I915_BO_ACTIVE_REF (I915_BO_ACTIVE_SHIFT + I915_NUM_ENGINES)
+#define I915_BO_ACTIVE_REF 0
 
 	/*
 	 * Is the object to be mapped as read-only to the GPU
@@ -2281,6 +2273,7 @@ struct drm_i915_gem_object {
 
 	/** Count of VMA actually bound by this object */
 	unsigned int bind_count;
+	unsigned int active_count;
 	unsigned int pin_display;
 
 	struct {
@@ -2320,8 +2313,7 @@ struct drm_i915_gem_object {
 	 * read request. This allows for the CPU to read from an active
 	 * buffer by only waiting for the write to complete.
 	 */
-	struct i915_gem_active last_read[I915_NUM_ENGINES];
-	struct i915_gem_active last_write;
+	struct reservation_object *resv;
 
 	/** References from framebuffers, locks out tiling changes. */
 	unsigned long framebuffer_references;
@@ -2340,6 +2332,8 @@ struct drm_i915_gem_object {
 
 	/** for phys allocated objects */
 	struct drm_dma_handle *phys_handle;
+
+	struct reservation_object __builtin_resv;
 };
 
 static inline struct drm_i915_gem_object *
@@ -2425,35 +2419,10 @@ i915_gem_object_has_struct_page(const struct drm_i915_gem_object *obj)
 	return obj->ops->flags & I915_GEM_OBJECT_HAS_STRUCT_PAGE;
 }
 
-static inline unsigned long
-i915_gem_object_get_active(const struct drm_i915_gem_object *obj)
-{
-	return (obj->flags >> I915_BO_ACTIVE_SHIFT) & I915_BO_ACTIVE_MASK;
-}
-
 static inline bool
 i915_gem_object_is_active(const struct drm_i915_gem_object *obj)
 {
-	return i915_gem_object_get_active(obj);
-}
-
-static inline void
-i915_gem_object_set_active(struct drm_i915_gem_object *obj, int engine)
-{
-	obj->flags |= BIT(engine + I915_BO_ACTIVE_SHIFT);
-}
-
-static inline void
-i915_gem_object_clear_active(struct drm_i915_gem_object *obj, int engine)
-{
-	obj->flags &= ~BIT(engine + I915_BO_ACTIVE_SHIFT);
-}
-
-static inline bool
-i915_gem_object_has_active_engine(const struct drm_i915_gem_object *obj,
-				  int engine)
-{
-	return obj->flags & BIT(engine + I915_BO_ACTIVE_SHIFT);
+	return obj->active_count;
 }
 
 static inline bool
@@ -2496,6 +2465,23 @@ i915_gem_object_get_stride(struct drm_i915_gem_object *obj)
 	return obj->tiling_and_stride & STRIDE_MASK;
 }
 
+static inline struct intel_engine_cs *
+i915_gem_object_last_write_engine(struct drm_i915_gem_object *obj)
+{
+	struct intel_engine_cs *engine = NULL;
+	struct dma_fence *fence;
+
+	rcu_read_lock();
+	fence = reservation_object_get_excl_rcu(obj->resv);
+	rcu_read_unlock();
+
+	if (fence && dma_fence_is_i915(fence) && !dma_fence_is_signaled(fence))
+		engine = to_request(fence)->engine;
+	dma_fence_put(fence);
+
+	return engine;
+}
+
 static inline struct i915_vma *i915_vma_get(struct i915_vma *vma)
 {
 	i915_gem_object_get(vma->obj);