1 files changed, 120 insertions, 0 deletions
diff --git a/drm/nouveau/nvkm/subdev/fb/nvc0.c b/drm/nouveau/nvkm/subdev/fb/nvc0.c
new file mode 100644
index 000000000..32f28dc73
--- /dev/null
+++ b/drm/nouveau/nvkm/subdev/fb/nvc0.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright 2012 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
+ */
+
+#include "nvc0.h"
+
+extern const u8 nvc0_pte_storage_type_map[256];
+
+bool
+nvc0_fb_memtype_valid(struct nouveau_fb *pfb, u32 tile_flags)
+{
+	u8 memtype = (tile_flags & 0x0000ff00) >> 8;
+	return likely((nvc0_pte_storage_type_map[memtype] != 0xff));
+}
+
+static void
+nvc0_fb_intr(struct nouveau_subdev *subdev)
+{
+	struct nvc0_fb_priv *priv = (void *)subdev;
+	u32 intr = nv_rd32(priv, 0x000100);
+	if (intr & 0x08000000) {
+		nv_debug(priv, "PFFB intr\n");
+		intr &= ~0x08000000;
+	}
+	if (intr & 0x00002000) {
+		nv_debug(priv, "PBFB intr\n");
+		intr &= ~0x00002000;
+	}
+}
+
+int
+nvc0_fb_init(struct nouveau_object *object)
+{
+	struct nvc0_fb_priv *priv = (void *)object;
+	int ret;
+
+	ret = nouveau_fb_init(&priv->base);
+	if (ret)
+		return ret;
+
+	if (priv->r100c10_page)
+		nv_wr32(priv, 0x100c10, priv->r100c10 >> 8);
+	nv_mask(priv, 0x100c80, 0x00000001, 0x00000000); /* 128KiB lpg */
+	return 0;
+}
+
+void
+nvc0_fb_dtor(struct nouveau_object *object)
+{
+	struct nouveau_device *device = nv_device(object);
+	struct nvc0_fb_priv *priv = (void *)object;
+
+	if (priv->r100c10_page) {
+		dma_unmap_page(nv_device_base(device), priv->r100c10, PAGE_SIZE,
+			       DMA_BIDIRECTIONAL);
+		__free_page(priv->r100c10_page);
+	}
+
+	nouveau_fb_destroy(&priv->base);
+}
+
+int
+nvc0_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+	     struct nouveau_oclass *oclass, void *data, u32 size,
+	     struct nouveau_object **pobject)
+{
+	struct nouveau_device *device = nv_device(parent);
+	struct nvc0_fb_priv *priv;
+	int ret;
+
+	ret = nouveau_fb_create(parent, engine, oclass, &priv);
+	*pobject = nv_object(priv);
+	if (ret)
+		return ret;
+
+	priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
+	if (priv->r100c10_page) {
+		priv->r100c10 = dma_map_page(nv_device_base(device),
+					     priv->r100c10_page, 0, PAGE_SIZE,
+					     DMA_BIDIRECTIONAL);
+		if (dma_mapping_error(nv_device_base(device), priv->r100c10))
+			return -EFAULT;
+	}
+
+	nv_subdev(priv)->intr = nvc0_fb_intr;
+	return 0;
+}
+
+struct nouveau_oclass *
+nvc0_fb_oclass = &(struct nouveau_fb_impl) {
+	.base.handle = NV_SUBDEV(FB, 0xc0),
+	.base.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nvc0_fb_ctor,
+		.dtor = nvc0_fb_dtor,
+		.init = nvc0_fb_init,
+		.fini = _nouveau_fb_fini,
+	},
+	.memtype = nvc0_fb_memtype_valid,
+	.ram = &nvc0_ram_oclass,
+}.base;