drm: etnaviv: Switch to use drm_gem_object reservation_object

Now that the base struct drm_gem_object has a reservation_object, use it
and remove the private BO one.

Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Russell King <linux+etnaviv@armlinux.org.uk>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: etnaviv@lists.freedesktop.org
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190202154158.10443-3-robh@kernel.orgSigned-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

drivers/gpu/drm/etnaviv/etnaviv_drv.c

@@ -473,7 +473,6 @@ static struct drm_driver etnaviv_drm_driver = {
 	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 	.gem_prime_export   = drm_gem_prime_export,
 	.gem_prime_import   = drm_gem_prime_import,
-	.gem_prime_res_obj  = etnaviv_gem_prime_res_obj,
 	.gem_prime_pin      = etnaviv_gem_prime_pin,
 	.gem_prime_unpin    = etnaviv_gem_prime_unpin,
 	.gem_prime_get_sg_table = etnaviv_gem_prime_get_sg_table,

drivers/gpu/drm/etnaviv/etnaviv_drv.h

@@ -60,7 +60,6 @@ void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj);
 void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
 int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
 			   struct vm_area_struct *vma);
-struct reservation_object *etnaviv_gem_prime_res_obj(struct drm_gem_object *obj);
 struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
 	struct dma_buf_attachment *attach, struct sg_table *sg);
 int etnaviv_gem_prime_pin(struct drm_gem_object *obj);

drivers/gpu/drm/etnaviv/etnaviv_gem.c

@@ -397,13 +397,13 @@ int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op,
 	}
 
 	if (op & ETNA_PREP_NOSYNC) {
-		if (!reservation_object_test_signaled_rcu(etnaviv_obj->resv,
+		if (!reservation_object_test_signaled_rcu(obj->resv,
 							  write))
 			return -EBUSY;
 	} else {
 		unsigned long remain = etnaviv_timeout_to_jiffies(timeout);
 
-		ret = reservation_object_wait_timeout_rcu(etnaviv_obj->resv,
+		ret = reservation_object_wait_timeout_rcu(obj->resv,
 							  write, true, remain);
 		if (ret <= 0)
 			return ret == 0 ? -ETIMEDOUT : ret;
@@ -459,7 +459,7 @@ static void etnaviv_gem_describe_fence(struct dma_fence *fence,
 static void etnaviv_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
 {
 	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
-	struct reservation_object *robj = etnaviv_obj->resv;
+	struct reservation_object *robj = obj->resv;
 	struct reservation_object_list *fobj;
 	struct dma_fence *fence;
 	unsigned long off = drm_vma_node_start(&obj->vma_node);
@@ -549,8 +549,6 @@ void etnaviv_gem_free_object(struct drm_gem_object *obj)
 
 	drm_gem_free_mmap_offset(obj);
 	etnaviv_obj->ops->release(etnaviv_obj);
-	if (etnaviv_obj->resv == &etnaviv_obj->_resv)
-		reservation_object_fini(&etnaviv_obj->_resv);
 	drm_gem_object_release(obj);
 
 	kfree(etnaviv_obj);
@@ -596,12 +594,8 @@ static int etnaviv_gem_new_impl(struct drm_device *dev, u32 size, u32 flags,
 
 	etnaviv_obj->flags = flags;
 	etnaviv_obj->ops = ops;
-	if (robj) {
-		etnaviv_obj->resv = robj;
-	} else {
-		etnaviv_obj->resv = &etnaviv_obj->_resv;
-		reservation_object_init(&etnaviv_obj->_resv);
-	}
+	if (robj)
+		etnaviv_obj->base.resv = robj;
 
 	mutex_init(&etnaviv_obj->lock);
 	INIT_LIST_HEAD(&etnaviv_obj->vram_list);

drivers/gpu/drm/etnaviv/etnaviv_gem.h

@@ -47,10 +47,6 @@ struct etnaviv_gem_object {
 	struct sg_table *sgt;
 	void *vaddr;
 
-	/* normally (resv == &_resv) except for imported bo's */
-	struct reservation_object *resv;
-	struct reservation_object _resv;
-
 	struct list_head vram_list;
 
 	/* cache maintenance */

drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c

@@ -139,10 +139,3 @@ struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
 
 	return ERR_PTR(ret);
 }
-
-struct reservation_object *etnaviv_gem_prime_res_obj(struct drm_gem_object *obj)
-{
-	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
-
-	return etnaviv_obj->resv;
-}

drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c

@@ -108,9 +108,9 @@ static int submit_lookup_objects(struct etnaviv_gem_submit *submit,
 static void submit_unlock_object(struct etnaviv_gem_submit *submit, int i)
 {
 	if (submit->bos[i].flags & BO_LOCKED) {
-		struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
+		struct drm_gem_object *obj = &submit->bos[i].obj->base;
 
-		ww_mutex_unlock(&etnaviv_obj->resv->lock);
+		ww_mutex_unlock(&obj->resv->lock);
 		submit->bos[i].flags &= ~BO_LOCKED;
 	}
 }
@@ -122,7 +122,7 @@ static int submit_lock_objects(struct etnaviv_gem_submit *submit,
 
 retry:
 	for (i = 0; i < submit->nr_bos; i++) {
-		struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
+		struct drm_gem_object *obj = &submit->bos[i].obj->base;
 
 		if (slow_locked == i)
 			slow_locked = -1;
@@ -130,7 +130,7 @@ static int submit_lock_objects(struct etnaviv_gem_submit *submit,
 		contended = i;
 
 		if (!(submit->bos[i].flags & BO_LOCKED)) {
-			ret = ww_mutex_lock_interruptible(&etnaviv_obj->resv->lock,
+			ret = ww_mutex_lock_interruptible(&obj->resv->lock,
 							  ticket);
 			if (ret == -EALREADY)
 				DRM_ERROR("BO at index %u already on submit list\n",
@@ -153,12 +153,12 @@ static int submit_lock_objects(struct etnaviv_gem_submit *submit,
 		submit_unlock_object(submit, slow_locked);
 
 	if (ret == -EDEADLK) {
-		struct etnaviv_gem_object *etnaviv_obj;
+		struct drm_gem_object *obj;
 
-		etnaviv_obj = submit->bos[contended].obj;
+		obj = &submit->bos[contended].obj->base;
 
 		/* we lost out in a seqno race, lock and retry.. */
-		ret = ww_mutex_lock_slow_interruptible(&etnaviv_obj->resv->lock,
+		ret = ww_mutex_lock_slow_interruptible(&obj->resv->lock,
 						       ticket);
 		if (!ret) {
 			submit->bos[contended].flags |= BO_LOCKED;
@@ -176,7 +176,7 @@ static int submit_fence_sync(struct etnaviv_gem_submit *submit)
 
 	for (i = 0; i < submit->nr_bos; i++) {
 		struct etnaviv_gem_submit_bo *bo = &submit->bos[i];
-		struct reservation_object *robj = bo->obj->resv;
+		struct reservation_object *robj = bo->obj->base.resv;
 
 		if (!(bo->flags & ETNA_SUBMIT_BO_WRITE)) {
 			ret = reservation_object_reserve_shared(robj, 1);
@@ -207,13 +207,13 @@ static void submit_attach_object_fences(struct etnaviv_gem_submit *submit)
 	int i;
 
 	for (i = 0; i < submit->nr_bos; i++) {
-		struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
+		struct drm_gem_object *obj = &submit->bos[i].obj->base;
 
 		if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE)
-			reservation_object_add_excl_fence(etnaviv_obj->resv,
+			reservation_object_add_excl_fence(obj->resv,
 							  submit->out_fence);
 		else
-			reservation_object_add_shared_fence(etnaviv_obj->resv,
+			reservation_object_add_shared_fence(obj->resv,
 							    submit->out_fence);
 
 		submit_unlock_object(submit, i);