drm/nouveau/fifo: implement channel creation event generation

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
git-mirror · Apr 26, 2013 · 893e90c · 893e90c
1 parent 10eeaf1
commit 893e90c
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/drivers/gpu/drm/nouveau/core/engine/fifo/base.c b/drivers/gpu/drm/nouveau/core/engine/fifo/base.c
@@ -91,6 +91,8 @@ nouveau_fifo_channel_create_(struct nouveau_object *parent,
 	if (!chan->user)
 		return -EFAULT;
 
+	nouveau_event_trigger(priv->cevent, 0);
+
 	chan->size = size;
 	return 0;
 }
@@ -167,6 +169,7 @@ nouveau_fifo_destroy(struct nouveau_fifo *priv)
 {
 	kfree(priv->channel);
 	nouveau_event_destroy(&priv->uevent);
+	nouveau_event_destroy(&priv->cevent);
 	nouveau_engine_destroy(&priv->base);
 }
 
@@ -191,6 +194,10 @@ nouveau_fifo_create_(struct nouveau_object *parent,
 	if (!priv->channel)
 		return -ENOMEM;
 
+	ret = nouveau_event_create(1, &priv->cevent);
+	if (ret)
+		return ret;
+
 	ret = nouveau_event_create(1, &priv->uevent);
 	if (ret)
 		return ret;

diff --git a/drivers/gpu/drm/nouveau/core/include/engine/fifo.h b/drivers/gpu/drm/nouveau/core/include/engine/fifo.h
@@ -65,7 +65,8 @@ struct nouveau_fifo_base {
 struct nouveau_fifo {
 	struct nouveau_engine base;
 
-	struct nouveau_event *uevent;
+	struct nouveau_event *cevent; /* channel creation event */
+	struct nouveau_event *uevent; /* async user trigger */
 
 	struct nouveau_object **channel;
 	spinlock_t lock;