vc4: Handle refcounting the exec BO like we do in the kernel.

This reduces the diff to the kernel, and will be useful when I make the
kernel allocate more BOs as part of validation.

2 files changed, 8 insertions, 0 deletions

diff --git a/src/gallium/drivers/vc4/kernel/vc4_drv.h b/src/gallium/drivers/vc4/kernel/vc4_drv.h
index dede7162c42..8e9230b8949 100644
--- a/src/gallium/drivers/vc4/kernel/vc4_drv.h
+++ b/src/gallium/drivers/vc4/kernel/vc4_drv.h
@@ -52,6 +52,11 @@ struct vc4_exec_info {
 	struct vc4_bo_exec_state *bo;
 	uint32_t bo_count;
 
+	/* List of other BOs used in the job that need to be released
+	 * once the job is complete.
+	 */
+	struct list_head unref_list;
+
 	/* Current unvalidated indices into @bo loaded by the non-hardware
 	 * VC4_PACKET_GEM_HANDLES.
 	 */
diff --git a/src/gallium/drivers/vc4/kernel/vc4_gem.c b/src/gallium/drivers/vc4/kernel/vc4_gem.c
index ac29ab35dbc..e559ddd1d4e 100644
--- a/src/gallium/drivers/vc4/kernel/vc4_gem.c
+++ b/src/gallium/drivers/vc4/kernel/vc4_gem.c
@@ -114,6 +114,9 @@ vc4_cl_validate(struct drm_device *dev, struct vc4_exec_info *exec)
 	}
 #endif
 
+	list_addtail(&to_vc4_bo(&exec->exec_bo->base)->unref_head,
+		     &exec->unref_list);
+
 	exec->ct0ca = exec->exec_bo->paddr + bin_offset;
 	exec->ct1ca = exec->exec_bo->paddr + render_offset;