diff options
Diffstat (limited to 'include/drm/ttm/ttm_bo_api.h')
| -rw-r--r-- | include/drm/ttm/ttm_bo_api.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 42e34698518..da957bf3fe4 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -44,6 +44,11 @@ struct ttm_bo_device; struct drm_mm_node; +enum ttm_buffer_usage { + TTM_USAGE_READ = 1, + TTM_USAGE_WRITE = 2, + TTM_USAGE_READWRITE = TTM_USAGE_READ | TTM_USAGE_WRITE +}; /** * struct ttm_placement @@ -174,7 +179,10 @@ struct ttm_tt; * the bo_device::lru_lock. * @reserved: Deadlock-free lock used for synchronization state transitions. * @sync_obj_arg: Opaque argument to synchronization object function. - * @sync_obj: Pointer to a synchronization object. + * @sync_obj: Pointer to a synchronization object of a last read or write, + * whichever is later. + * @sync_obj_read: Pointer to a synchronization object of a last read. + * @sync_obj_write: Pointer to a synchronization object of a last write. * @priv_flags: Flags describing buffer object internal state. * @vm_rb: Rb node for the vm rb tree. * @vm_node: Address space manager node. @@ -258,6 +266,8 @@ struct ttm_buffer_object { void *sync_obj_arg; void *sync_obj; + void *sync_obj_read; + void *sync_obj_write; unsigned long priv_flags; /** @@ -325,6 +335,7 @@ ttm_bo_reference(struct ttm_buffer_object *bo) * @bo: The buffer object. * @interruptible: Use interruptible wait. * @no_wait: Return immediately if buffer is busy. + * @usage: Whether to wait for the last read and/or the last write. * * This function must be called with the bo::mutex held, and makes * sure any previous rendering to the buffer is completed. @@ -334,7 +345,8 @@ ttm_bo_reference(struct ttm_buffer_object *bo) * Returns -ERESTARTSYS if interrupted by a signal. */ extern int ttm_bo_wait(struct ttm_buffer_object *bo, bool lazy, - bool interruptible, bool no_wait); + bool interruptible, bool no_wait, + enum ttm_buffer_usage usage); /** * ttm_bo_validate * |