drm: vc4: 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: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190202154158.10443-6-robh@kernel.orgSigned-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

drivers/gpu/drm/vc4/vc4_bo.c

@@ -201,8 +201,6 @@ static void vc4_bo_destroy(struct vc4_bo *bo)
 		bo->validated_shader = NULL;
 	}
 
-	reservation_object_fini(&bo->_resv);
-
 	drm_gem_cma_free_object(obj);
 }
 
@@ -427,8 +425,6 @@ struct drm_gem_object *vc4_create_object(struct drm_device *dev, size_t size)
 	vc4->bo_labels[VC4_BO_TYPE_KERNEL].num_allocated++;
 	vc4->bo_labels[VC4_BO_TYPE_KERNEL].size_allocated += size;
 	mutex_unlock(&vc4->bo_lock);
-	bo->resv = &bo->_resv;
-	reservation_object_init(bo->resv);
 
 	return &bo->base.base;
 }
@@ -684,13 +680,6 @@ static void vc4_bo_cache_time_timer(struct timer_list *t)
 	schedule_work(&vc4->bo_cache.time_work);
 }
 
-struct reservation_object *vc4_prime_res_obj(struct drm_gem_object *obj)
-{
-	struct vc4_bo *bo = to_vc4_bo(obj);
-
-	return bo->resv;
-}
-
 struct dma_buf *
 vc4_prime_export(struct drm_device *dev, struct drm_gem_object *obj, int flags)
 {
@@ -822,14 +811,12 @@ vc4_prime_import_sg_table(struct drm_device *dev,
 			  struct sg_table *sgt)
 {
 	struct drm_gem_object *obj;
-	struct vc4_bo *bo;
 
 	obj = drm_gem_cma_prime_import_sg_table(dev, attach, sgt);
 	if (IS_ERR(obj))
 		return obj;
 
-	bo = to_vc4_bo(obj);
-	bo->resv = attach->dmabuf->resv;
+	obj->resv = attach->dmabuf->resv;
 
 	return obj;
 }

drivers/gpu/drm/vc4/vc4_drv.c

@@ -200,7 +200,6 @@ static struct drm_driver vc4_drm_driver = {
 	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 	.gem_prime_import = drm_gem_prime_import,
 	.gem_prime_export = vc4_prime_export,
-	.gem_prime_res_obj = vc4_prime_res_obj,
 	.gem_prime_get_sg_table	= drm_gem_cma_prime_get_sg_table,
 	.gem_prime_import_sg_table = vc4_prime_import_sg_table,
 	.gem_prime_vmap = vc4_prime_vmap,

drivers/gpu/drm/vc4/vc4_drv.h

@@ -7,7 +7,6 @@
  */
 
 #include <linux/mm_types.h>
-#include <linux/reservation.h>
 #include <drm/drmP.h>
 #include <drm/drm_util.h>
 #include <drm/drm_encoder.h>
@@ -240,10 +239,6 @@ struct vc4_bo {
 	 */
 	struct vc4_validated_shader_info *validated_shader;
 
-	/* normally (resv == &_resv) except for imported bo's */
-	struct reservation_object *resv;
-	struct reservation_object _resv;
-
 	/* One of enum vc4_kernel_bo_type, or VC4_BO_TYPE_COUNT + i
 	 * for user-allocated labels.
 	 */
@@ -685,7 +680,6 @@ int vc4_label_bo_ioctl(struct drm_device *dev, void *data,
 		       struct drm_file *file_priv);
 vm_fault_t vc4_fault(struct vm_fault *vmf);
 int vc4_mmap(struct file *filp, struct vm_area_struct *vma);
-struct reservation_object *vc4_prime_res_obj(struct drm_gem_object *obj);
 int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
 struct drm_gem_object *vc4_prime_import_sg_table(struct drm_device *dev,
 						 struct dma_buf_attachment *attach,

drivers/gpu/drm/vc4/vc4_gem.c

@@ -536,7 +536,7 @@ vc4_update_bo_seqnos(struct vc4_exec_info *exec, uint64_t seqno)
 		bo = to_vc4_bo(&exec->bo[i]->base);
 		bo->seqno = seqno;
 
-		reservation_object_add_shared_fence(bo->resv, exec->fence);
+		reservation_object_add_shared_fence(bo->base.base.resv, exec->fence);
 	}
 
 	list_for_each_entry(bo, &exec->unref_list, unref_head) {
@@ -547,7 +547,7 @@ vc4_update_bo_seqnos(struct vc4_exec_info *exec, uint64_t seqno)
 		bo = to_vc4_bo(&exec->rcl_write_bo[i]->base);
 		bo->write_seqno = seqno;
 
-		reservation_object_add_excl_fence(bo->resv, exec->fence);
+		reservation_object_add_excl_fence(bo->base.base.resv, exec->fence);
 	}
 }
 
@@ -559,7 +559,7 @@ vc4_unlock_bo_reservations(struct drm_device *dev,
 	int i;
 
 	for (i = 0; i < exec->bo_count; i++) {
-		struct vc4_bo *bo = to_vc4_bo(&exec->bo[i]->base);
+		struct drm_gem_object *bo = &exec->bo[i]->base;
 
 		ww_mutex_unlock(&bo->resv->lock);
 	}
@@ -581,13 +581,13 @@ vc4_lock_bo_reservations(struct drm_device *dev,
 {
 	int contended_lock = -1;
 	int i, ret;
-	struct vc4_bo *bo;
+	struct drm_gem_object *bo;
 
 	ww_acquire_init(acquire_ctx, &reservation_ww_class);
 
 retry:
 	if (contended_lock != -1) {
-		bo = to_vc4_bo(&exec->bo[contended_lock]->base);
+		bo = &exec->bo[contended_lock]->base;
 		ret = ww_mutex_lock_slow_interruptible(&bo->resv->lock,
 						       acquire_ctx);
 		if (ret) {
@@ -600,19 +600,19 @@ vc4_lock_bo_reservations(struct drm_device *dev,
 		if (i == contended_lock)
 			continue;
 
-		bo = to_vc4_bo(&exec->bo[i]->base);
+		bo = &exec->bo[i]->base;
 
 		ret = ww_mutex_lock_interruptible(&bo->resv->lock, acquire_ctx);
 		if (ret) {
 			int j;
 
 			for (j = 0; j < i; j++) {
-				bo = to_vc4_bo(&exec->bo[j]->base);
+				bo = &exec->bo[j]->base;
 				ww_mutex_unlock(&bo->resv->lock);
 			}
 
 			if (contended_lock != -1 && contended_lock >= i) {
-				bo = to_vc4_bo(&exec->bo[contended_lock]->base);
+				bo = &exec->bo[contended_lock]->base;
 
 				ww_mutex_unlock(&bo->resv->lock);
 			}
@@ -633,7 +633,7 @@ vc4_lock_bo_reservations(struct drm_device *dev,
 	 * before we commit the CL to the hardware.
 	 */
 	for (i = 0; i < exec->bo_count; i++) {
-		bo = to_vc4_bo(&exec->bo[i]->base);
+		bo = &exec->bo[i]->base;
 
 		ret = reservation_object_reserve_shared(bo->resv, 1);
 		if (ret) {

drivers/gpu/drm/vc4/vc4_plane.c

@@ -1082,7 +1082,7 @@ static int vc4_prepare_fb(struct drm_plane *plane,
 
 	bo = to_vc4_bo(&drm_fb_cma_get_gem_obj(state->fb, 0)->base);
 
-	fence = reservation_object_get_excl_rcu(bo->resv);
+	fence = reservation_object_get_excl_rcu(bo->base.base.resv);
 	drm_atomic_set_fence_for_plane(state, fence);
 
 	if (plane->state->fb == state->fb)