1 files changed, 80 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/ltc/base.c b/drivers/gpu/drm/nouveau/core/subdev/ltc/base.c
new file mode 100644
index 000000000000..c99bf3f7352f
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/ltc/base.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2014 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+
+#include "priv.h"
+
+static int
+nvkm_ltc_tags_alloc(struct nouveau_ltc *ltc, u32 n,
+		    struct nouveau_mm_node **pnode)
+{
+	struct nvkm_ltc_priv *priv = (void *)ltc;
+	int ret;
+
+	ret = nouveau_mm_head(&priv->tags, 1, n, n, 1, pnode);
+	if (ret)
+		*pnode = NULL;
+
+	return ret;
+}
+
+static void
+nvkm_ltc_tags_free(struct nouveau_ltc *ltc, struct nouveau_mm_node **pnode)
+{
+	struct nvkm_ltc_priv *priv = (void *)ltc;
+	nouveau_mm_free(&priv->tags, pnode);
+}
+
+static void
+nvkm_ltc_tags_clear(struct nouveau_ltc *ltc, u32 first, u32 count)
+{
+	const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc);
+	struct nvkm_ltc_priv *priv = (void *)ltc;
+	const u32 limit = first + count - 1;
+
+	BUG_ON((first > limit) || (limit >= priv->num_tags));
+
+	impl->cbc_clear(priv, first, limit);
+	impl->cbc_wait(priv);
+}
+
+int
+nvkm_ltc_create_(struct nouveau_object *parent, struct nouveau_object *engine,
+		 struct nouveau_oclass *oclass, int length, void **pobject)
+{
+	const struct nvkm_ltc_impl *impl = (void *)oclass;
+	struct nvkm_ltc_priv *priv;
+	int ret;
+
+	ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PLTCG",
+				     "l2c", length, pobject);
+	priv = *pobject;
+	if (ret)
+		return ret;
+
+	priv->base.base.intr = impl->intr;
+	priv->base.tags_alloc = nvkm_ltc_tags_alloc;
+	priv->base.tags_free = nvkm_ltc_tags_free;
+	priv->base.tags_clear = nvkm_ltc_tags_clear;
+	return 0;
+}