drm/nouveau/fifo: add method to lookup fifo chid related to a given object (0c5b8cec) · Commits · 戴 / test

drivers/gpu/drm/nouveau/core/engine/fifo/base.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -132,6 +132,21 @@ _nouveau_fifo_channel_wr32(struct nouveau_object *object, u32 addr, u32 data)
		iowrite32_native(data, chan->user + addr);
		}

		int
		nouveau_fifo_chid(struct nouveau_fifo priv, struct nouveau_object object)
		{
		int engidx = nv_hclass(priv) & 0xff;

		while (object && object->parent) {
		if ( nv_iclass(object->parent, NV_ENGCTX_CLASS) &&
		(nv_hclass(object->parent) & 0xff) == engidx)
		return nouveau_fifo_chan(object)->chid;
		object = object->parent;
		}

		return -1;
		}

		void
		nouveau_fifo_destroy(struct nouveau_fifo *priv)
		{
		@@ -160,6 +175,7 @@ nouveau_fifo_create_(struct nouveau_object *parent,
		if (!priv->channel)
		return -ENOMEM;

		priv->chid = nouveau_fifo_chid;
		spin_lock_init(&priv->lock);
		return 0;
		}

+1 −0

Original line number	Diff line number	Diff line
		@@ -70,6 +70,7 @@ struct nouveau_fifo {
		u16 min;
		u16 max;

		int (chid)(struct nouveau_fifo , struct nouveau_object *);
		void (pause)(struct nouveau_fifo , unsigned long *);
		void (start)(struct nouveau_fifo , unsigned long *);
		};