1 files changed, 149 insertions, 0 deletions
diff --git a/drm/nouveau/nvkm/subdev/bar/base.c b/drm/nouveau/nvkm/subdev/bar/base.c
new file mode 100644
index 000000000..188c63841
--- /dev/null
+++ b/drm/nouveau/nvkm/subdev/bar/base.c
@@ -0,0 +1,149 @@
+/*
+ * 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 <core/object.h>
+
+#include <subdev/fb.h>
+#include <subdev/vm.h>
+
+#include "priv.h"
+
+struct nouveau_barobj {
+	struct nouveau_object base;
+	struct nouveau_vma vma;
+	void __iomem *iomem;
+};
+
+static int
+nouveau_barobj_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 nouveau_bar *bar = nouveau_bar(device);
+	struct nouveau_mem *mem = data;
+	struct nouveau_barobj *barobj;
+	int ret;
+
+	ret = nouveau_object_create(parent, engine, oclass, 0, &barobj);
+	*pobject = nv_object(barobj);
+	if (ret)
+		return ret;
+
+	ret = bar->kmap(bar, mem, NV_MEM_ACCESS_RW, &barobj->vma);
+	if (ret)
+		return ret;
+
+	barobj->iomem = ioremap(nv_device_resource_start(device, 3) +
+				(u32)barobj->vma.offset, mem->size << 12);
+	if (!barobj->iomem) {
+		nv_warn(bar, "PRAMIN ioremap failed\n");
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void
+nouveau_barobj_dtor(struct nouveau_object *object)
+{
+	struct nouveau_bar *bar = nouveau_bar(object);
+	struct nouveau_barobj *barobj = (void *)object;
+	if (barobj->vma.node) {
+		if (barobj->iomem)
+			iounmap(barobj->iomem);
+		bar->unmap(bar, &barobj->vma);
+	}
+	nouveau_object_destroy(&barobj->base);
+}
+
+static u32
+nouveau_barobj_rd32(struct nouveau_object *object, u64 addr)
+{
+	struct nouveau_barobj *barobj = (void *)object;
+	return ioread32_native(barobj->iomem + addr);
+}
+
+static void
+nouveau_barobj_wr32(struct nouveau_object *object, u64 addr, u32 data)
+{
+	struct nouveau_barobj *barobj = (void *)object;
+	iowrite32_native(data, barobj->iomem + addr);
+}
+
+static struct nouveau_oclass
+nouveau_barobj_oclass = {
+	.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nouveau_barobj_ctor,
+		.dtor = nouveau_barobj_dtor,
+		.init = nouveau_object_init,
+		.fini = nouveau_object_fini,
+		.rd32 = nouveau_barobj_rd32,
+		.wr32 = nouveau_barobj_wr32,
+	},
+};
+
+int
+nouveau_bar_alloc(struct nouveau_bar *bar, struct nouveau_object *parent,
+		  struct nouveau_mem *mem, struct nouveau_object **pobject)
+{
+	struct nouveau_object *gpuobj;
+	int ret = nouveau_object_ctor(parent, &parent->engine->subdev.object,
+				      &nouveau_barobj_oclass,
+				      mem, 0, &gpuobj);
+	if (ret == 0)
+		*pobject = gpuobj;
+	return ret;
+}
+
+int
+nouveau_bar_create_(struct nouveau_object *parent,
+		    struct nouveau_object *engine,
+		    struct nouveau_oclass *oclass, int length, void **pobject)
+{
+	struct nouveau_bar *bar;
+	int ret;
+
+	ret = nouveau_subdev_create_(parent, engine, oclass, 0, "BARCTL",
+				     "bar", length, pobject);
+	bar = *pobject;
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+void
+nouveau_bar_destroy(struct nouveau_bar *bar)
+{
+	nouveau_subdev_destroy(&bar->base);
+}
+
+void
+_nouveau_bar_dtor(struct nouveau_object *object)
+{
+	struct nouveau_bar *bar = (void *)object;
+	nouveau_bar_destroy(bar);
+}