diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_timeline.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_timeline.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_timeline.c b/drivers/gpu/drm/i915/i915_timeline.c index 5ea3af393ffe..dcff3ae96683 100644 --- a/drivers/gpu/drm/i915/i915_timeline.c +++ b/drivers/gpu/drm/i915/i915_timeline.c @@ -163,6 +163,7 @@ int i915_timeline_init(struct drm_i915_private *i915, spin_lock_init(&timeline->lock); + init_request_active(&timeline->barrier, NULL); init_request_active(&timeline->last_request, NULL); INIT_LIST_HEAD(&timeline->requests); @@ -235,6 +236,7 @@ void i915_timeline_fini(struct i915_timeline *timeline) { GEM_BUG_ON(timeline->pin_count); GEM_BUG_ON(!list_empty(&timeline->requests)); + GEM_BUG_ON(i915_gem_active_isset(&timeline->barrier)); i915_syncmap_free(&timeline->sync); hwsp_free(timeline); @@ -309,6 +311,25 @@ void i915_timeline_unpin(struct i915_timeline *tl) __i915_vma_unpin(tl->hwsp_ggtt); } +int i915_timeline_set_barrier(struct i915_timeline *tl, struct i915_request *rq) +{ + struct i915_request *old; + int err; + + lockdep_assert_held(&rq->i915->drm.struct_mutex); + + /* Must maintain ordering wrt existing barriers */ + old = i915_gem_active_raw(&tl->barrier, &rq->i915->drm.struct_mutex); + if (old) { + err = i915_request_await_dma_fence(rq, &old->fence); + if (err) + return err; + } + + i915_gem_active_set(&tl->barrier, rq); + return 0; +} + void __i915_timeline_free(struct kref *kref) { struct i915_timeline *timeline = |