+ fence);
+}
+EXPORT_SYMBOL(drm_syncobj_lookup_fence);
+
/**
* drm_syncobj_find_fence - lookup and reference the fence in a
sync object
* @file_private: drm file private pointer
@@ -228,7 +443,7 @@ static int drm_syncobj_assign_null_handle(struct
drm_syncobj *syncobj)
* @fence: out parameter for the fence
*
* This is just a convenience function that combines
drm_syncobj_find() and
- * drm_syncobj_fence_get().
+ * drm_syncobj_lookup_fence().
*
* Returns 0 on success or a negative error value on failure. On
success @fence
* contains a reference to the fence, which must be released by
calling
@@ -236,18 +451,11 @@ static int
drm_syncobj_assign_null_handle(struct drm_syncobj *syncobj)
*/
int drm_syncobj_find_fence(struct drm_file *file_private,
u32 handle, u64 point,
- struct dma_fence **fence)
-{
+ struct dma_fence **fence) {
struct drm_syncobj *syncobj = drm_syncobj_find(file_private,
handle);
- int ret = 0;
-
- if (!syncobj)
- return -ENOENT;
+ int ret;
- *fence = drm_syncobj_fence_get(syncobj);
- if (!*fence) {
- ret = -EINVAL;
- }
+ ret = drm_syncobj_lookup_fence(syncobj, point, fence);
drm_syncobj_put(syncobj);
return ret;
}
@@ -264,7 +472,7 @@ void drm_syncobj_free(struct kref *kref)
struct drm_syncobj *syncobj = container_of(kref,
struct drm_syncobj,
refcount);
- drm_syncobj_replace_fence(syncobj, 0, NULL);
+ drm_syncobj_timeline_fini(syncobj);
kfree(syncobj);
}
EXPORT_SYMBOL(drm_syncobj_free);
@@ -294,6 +502,11 @@ int drm_syncobj_create(struct drm_syncobj
**out_syncobj, uint32_t flags,
kref_init(&syncobj->refcount);
INIT_LIST_HEAD(&syncobj->cb_list);
spin_lock_init(&syncobj->lock);
+ if (flags & DRM_SYNCOBJ_CREATE_TYPE_TIMELINE)
+ syncobj->type = DRM_SYNCOBJ_TYPE_TIMELINE;
+ else
+ syncobj->type = DRM_SYNCOBJ_TYPE_INDIVIDUAL;
+ drm_syncobj_timeline_init(syncobj);
if (flags & DRM_SYNCOBJ_CREATE_SIGNALED) {
ret = drm_syncobj_assign_null_handle(syncobj);
@@ -576,7 +789,8 @@ drm_syncobj_create_ioctl(struct drm_device *dev,
void *data,
return -ENODEV;
/* no valid flags yet */
- if (args->flags & ~DRM_SYNCOBJ_CREATE_SIGNALED)
+ if (args->flags & ~(DRM_SYNCOBJ_CREATE_SIGNALED |
+ DRM_SYNCOBJ_CREATE_TYPE_TIMELINE))
return -EINVAL;
return drm_syncobj_create_as_handle(file_private,
@@ -669,9 +883,8 @@ static void syncobj_wait_syncobj_func(struct
drm_syncobj *syncobj,
struct syncobj_wait_entry *wait =
container_of(cb, struct syncobj_wait_entry, syncobj_cb);
- /* This happens inside the syncobj lock */
- wait->fence =
dma_fence_get(rcu_dereference_protected(syncobj->fence,
- lockdep_is_held(&syncobj->lock)));
+ drm_syncobj_search_fence(syncobj, 0, 0, &wait->fence);
+
wake_up_process(wait->task);
}
@@ -698,7 +911,8 @@ static signed long
drm_syncobj_array_wait_timeout(struct drm_syncobj **syncobjs,
signaled_count = 0;
for (i = 0; i < count; ++i) {
entries[i].task = current;
- entries[i].fence = drm_syncobj_fence_get(syncobjs[i]);
+ ret = drm_syncobj_search_fence(syncobjs[i], 0, 0,
+ &entries[i].fence);
if (!entries[i].fence) {
if (flags & DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT) {
continue;
@@ -970,12 +1184,19 @@ drm_syncobj_reset_ioctl(struct drm_device
*dev, void *data,
if (ret < 0)
return ret;
- for (i = 0; i < args->count_handles; i++)
- drm_syncobj_replace_fence(syncobjs[i], 0, NULL);
-
+ for (i = 0; i < args->count_handles; i++) {
+ if (syncobjs[i]->type == DRM_SYNCOBJ_TYPE_TIMELINE) {
+ DRM_ERROR("timeline syncobj cannot reset!\n");
+ ret = -EINVAL;
+ goto out;
+ }
+ drm_syncobj_timeline_fini(syncobjs[i]);
+ drm_syncobj_timeline_init(syncobjs[i]);
+ }
+out:
drm_syncobj_array_free(syncobjs, args->count_handles);
- return 0;
+ return ret;
}
int
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 0a8d2d64f380..a040fa3281df 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -2137,7 +2137,7 @@ await_fence_array(struct i915_execbuffer *eb,
if (!(flags & I915_EXEC_FENCE_WAIT))
continue;
- fence = drm_syncobj_fence_get(syncobj);
+ drm_syncobj_lookup_fence(syncobj, 0, &fence);
if (!fence)
return -EINVAL;
diff --git a/include/drm/drm_syncobj.h b/include/drm/drm_syncobj.h
index 425432b85a87..6dac479fedfe 100644
--- a/include/drm/drm_syncobj.h
+++ b/include/drm/drm_syncobj.h
@@ -30,6 +30,11 @@
struct drm_syncobj_cb;
+enum drm_syncobj_type {
+ DRM_SYNCOBJ_TYPE_INDIVIDUAL,
+ DRM_SYNCOBJ_TYPE_TIMELINE
+};
+
/**
* struct drm_syncobj - sync object.
*
@@ -41,19 +46,36 @@ struct drm_syncobj {
*/
struct kref refcount;
/**
- * @fence:
- * NULL or a pointer to the fence bound to this object.
- *
- * This field should not be used directly. Use
drm_syncobj_fence_get()
- * and drm_syncobj_replace_fence() instead.
+ * @type: indicate syncobj type
+ */
+ enum drm_syncobj_type type;
+ /**
+ * @wq: wait signal operation work queue
+ */
+ wait_queue_head_t wq;
+ /**
+ * @timeline_context: fence context used by timeline
*/
- struct dma_fence __rcu *fence;
+ u64 timeline_context;
/**
- * @cb_list: List of callbacks to call when the &fence gets
replaced.
+ * @timeline: syncobj timeline value, which indicates point is
signaled.
*/
+ u64 timeline;
+ /**
+ * @signal_point: which indicates the latest signaler point.
+ */
+ u64 signal_point;
+ /**
+ * @signal_pt_list: signaler point list.
+ */
+ struct list_head signal_pt_list;
+
+ /**
+ * @cb_list: List of callbacks to call when the &fence gets
replaced.
+ */
struct list_head cb_list;
/**
- * @lock: Protects &cb_list and write-locks &fence.
+ * @lock: Protects syncobj list and write-locks &fence.
*/
spinlock_t lock;
/**
@@ -68,7 +90,7 @@ typedef void (*drm_syncobj_func_t)(struct
drm_syncobj *syncobj,
/**
* struct drm_syncobj_cb - callback for drm_syncobj_add_callback
* @node: used by drm_syncob_add_callback to append this struct to
- * &drm_syncobj.cb_list
+ * &drm_syncobj.cb_list
* @func: drm_syncobj_func_t to call
*
* This struct will be initialized by drm_syncobj_add_callback,
additional
@@ -106,29 +128,6 @@ drm_syncobj_put(struct drm_syncobj *obj)
kref_put(&obj->refcount, drm_syncobj_free);
}
-/**
- * drm_syncobj_fence_get - get a reference to a fence in a sync object
- * @syncobj: sync object.
- *
- * This acquires additional reference to &drm_syncobj.fence
contained in @obj,
- * if not NULL. It is illegal to call this without already holding
a reference.
- * No locks required.
- *
- * Returns:
- * Either the fence of @obj or NULL if there's none.
- */
-static inline struct dma_fence *
-drm_syncobj_fence_get(struct drm_syncobj *syncobj)
-{
- struct dma_fence *fence;
-
- rcu_read_lock();
- fence = dma_fence_get_rcu_safe(&syncobj->fence);
- rcu_read_unlock();
-
- return fence;
-}
-
struct drm_syncobj *drm_syncobj_find(struct drm_file *file_private,
u32 handle);
void drm_syncobj_replace_fence(struct drm_syncobj *syncobj, u64
point,
@@ -142,5 +141,7 @@ int drm_syncobj_create(struct drm_syncobj
**out_syncobj, uint32_t flags,
int drm_syncobj_get_handle(struct drm_file *file_private,
struct drm_syncobj *syncobj, u32 *handle);
int drm_syncobj_get_fd(struct drm_syncobj *syncobj, int *p_fd);
+int drm_syncobj_lookup_fence(struct drm_syncobj *syncobj, u64 point,
+ struct dma_fence **fence);
#endif
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index 300f336633f2..cebdb2541eb7 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -717,6 +717,7 @@ struct drm_prime_handle {
struct drm_syncobj_create {
__u32 handle;
#define DRM_SYNCOBJ_CREATE_SIGNALED (1 << 0)
+#define DRM_SYNCOBJ_CREATE_TYPE_TIMELINE (1 << 1)
__u32 flags;
};
