From 8ac3891b48906b38db4b153c2d0d55db2ef81aee Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Tue, 21 Sep 2010 20:49:39 +0200 Subject: drm/nouveau: Provide a means to have arbitrary work run on fence completion. Signed-off-by: Francisco Jerez Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_fence.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'drivers/gpu/drm/nouveau/nouveau_fence.c') diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c index 62f13189698a..fbb2c3b26239 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.c +++ b/drivers/gpu/drm/nouveau/nouveau_fence.c @@ -39,6 +39,9 @@ struct nouveau_fence { uint32_t sequence; bool signalled; + + void (*work)(void *priv, bool signalled); + void *priv; }; static inline struct nouveau_fence * @@ -78,6 +81,10 @@ nouveau_fence_update(struct nouveau_channel *chan) sequence = fence->sequence; fence->signalled = true; list_del(&fence->entry); + + if (unlikely(fence->work)) + fence->work(fence->priv, true); + kref_put(&fence->refcount, nouveau_fence_del); if (sequence == chan->fence.sequence_ack) @@ -147,6 +154,25 @@ nouveau_fence_emit(struct nouveau_fence *fence) return 0; } +void +nouveau_fence_work(struct nouveau_fence *fence, + void (*work)(void *priv, bool signalled), + void *priv) +{ + BUG_ON(fence->work); + + spin_lock(&fence->channel->fence.lock); + + if (fence->signalled) { + work(priv, true); + } else { + fence->work = work; + fence->priv = priv; + } + + spin_unlock(&fence->channel->fence.lock); +} + void nouveau_fence_unref(void **sync_obj) { @@ -268,6 +294,10 @@ nouveau_fence_channel_fini(struct nouveau_channel *chan) list_for_each_entry_safe(fence, tmp, &chan->fence.pending, entry) { fence->signalled = true; list_del(&fence->entry); + + if (unlikely(fence->work)) + fence->work(fence->priv, false); + kref_put(&fence->refcount, nouveau_fence_del); } } -- cgit v1.2.3