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path: root/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c126
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c
new file mode 100644
index 000000000000..7fa331516f84
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c
@@ -0,0 +1,126 @@
+/*
+ * 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, 0, 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);
+}
+
+static int
+nvkm_ltc_zbc_color_get(struct nouveau_ltc *ltc, int index, const u32 color[4])
+{
+ const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc);
+ struct nvkm_ltc_priv *priv = (void *)ltc;
+ memcpy(priv->zbc_color[index], color, sizeof(priv->zbc_color[index]));
+ impl->zbc_clear_color(priv, index, color);
+ return index;
+}
+
+static int
+nvkm_ltc_zbc_depth_get(struct nouveau_ltc *ltc, int index, const u32 depth)
+{
+ const struct nvkm_ltc_impl *impl = (void *)nv_oclass(ltc);
+ struct nvkm_ltc_priv *priv = (void *)ltc;
+ priv->zbc_depth[index] = depth;
+ impl->zbc_clear_depth(priv, index, depth);
+ return index;
+}
+
+int
+_nvkm_ltc_init(struct nouveau_object *object)
+{
+ const struct nvkm_ltc_impl *impl = (void *)nv_oclass(object);
+ struct nvkm_ltc_priv *priv = (void *)object;
+ int ret, i;
+
+ ret = nouveau_subdev_init(&priv->base.base);
+ if (ret)
+ return ret;
+
+ for (i = priv->base.zbc_min; i <= priv->base.zbc_max; i++) {
+ impl->zbc_clear_color(priv, i, priv->zbc_color[i]);
+ impl->zbc_clear_depth(priv, i, priv->zbc_depth[i]);
+ }
+
+ return 0;
+}
+
+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;
+
+ memset(priv->zbc_color, 0x00, sizeof(priv->zbc_color));
+ memset(priv->zbc_depth, 0x00, sizeof(priv->zbc_depth));
+
+ 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;
+ priv->base.zbc_min = 1; /* reserve 0 for disabled */
+ priv->base.zbc_max = min(impl->zbc, NOUVEAU_LTC_MAX_ZBC_CNT) - 1;
+ priv->base.zbc_color_get = nvkm_ltc_zbc_color_get;
+ priv->base.zbc_depth_get = nvkm_ltc_zbc_depth_get;
+ return 0;
+}