1 files changed, 336 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/object.c b/drivers/gpu/drm/nouveau/nvkm/core/object.c
new file mode 100644
index 000000000..301a5e5b5
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/core/object.c
@@ -0,0 +1,336 @@
+/*
+ * 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 <core/client.h>
+#include <core/engine.h>
+
+struct nvkm_object *
+nvkm_object_search(struct nvkm_client *client, u64 handle,
+		   const struct nvkm_object_func *func)
+{
+	struct nvkm_object *object;
+
+	if (handle) {
+		struct rb_node *node = client->objroot.rb_node;
+		while (node) {
+			object = rb_entry(node, typeof(*object), node);
+			if (handle < object->object)
+				node = node->rb_left;
+			else
+			if (handle > object->object)
+				node = node->rb_right;
+			else
+				goto done;
+		}
+		return ERR_PTR(-ENOENT);
+	} else {
+		object = &client->object;
+	}
+
+done:
+	if (unlikely(func && object->func != func))
+		return ERR_PTR(-EINVAL);
+	return object;
+}
+
+void
+nvkm_object_remove(struct nvkm_object *object)
+{
+	if (!RB_EMPTY_NODE(&object->node))
+		rb_erase(&object->node, &object->client->objroot);
+}
+
+bool
+nvkm_object_insert(struct nvkm_object *object)
+{
+	struct rb_node **ptr = &object->client->objroot.rb_node;
+	struct rb_node *parent = NULL;
+
+	while (*ptr) {
+		struct nvkm_object *this = rb_entry(*ptr, typeof(*this), node);
+		parent = *ptr;
+		if (object->object < this->object)
+			ptr = &parent->rb_left;
+		else
+		if (object->object > this->object)
+			ptr = &parent->rb_right;
+		else
+			return false;
+	}
+
+	rb_link_node(&object->node, parent, ptr);
+	rb_insert_color(&object->node, &object->client->objroot);
+	return true;
+}
+
+int
+nvkm_object_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
+{
+	if (likely(object->func->mthd))
+		return object->func->mthd(object, mthd, data, size);
+	return -ENODEV;
+}
+
+int
+nvkm_object_ntfy(struct nvkm_object *object, u32 mthd,
+		 struct nvkm_event **pevent)
+{
+	if (likely(object->func->ntfy))
+		return object->func->ntfy(object, mthd, pevent);
+	return -ENODEV;
+}
+
+int
+nvkm_object_map(struct nvkm_object *object, void *argv, u32 argc,
+		enum nvkm_object_map *type, u64 *addr, u64 *size)
+{
+	if (likely(object->func->map))
+		return object->func->map(object, argv, argc, type, addr, size);
+	return -ENODEV;
+}
+
+int
+nvkm_object_unmap(struct nvkm_object *object)
+{
+	if (likely(object->func->unmap))
+		return object->func->unmap(object);
+	return -ENODEV;
+}
+
+int
+nvkm_object_rd08(struct nvkm_object *object, u64 addr, u8 *data)
+{
+	if (likely(object->func->rd08))
+		return object->func->rd08(object, addr, data);
+	return -ENODEV;
+}
+
+int
+nvkm_object_rd16(struct nvkm_object *object, u64 addr, u16 *data)
+{
+	if (likely(object->func->rd16))
+		return object->func->rd16(object, addr, data);
+	return -ENODEV;
+}
+
+int
+nvkm_object_rd32(struct nvkm_object *object, u64 addr, u32 *data)
+{
+	if (likely(object->func->rd32))
+		return object->func->rd32(object, addr, data);
+	return -ENODEV;
+}
+
+int
+nvkm_object_wr08(struct nvkm_object *object, u64 addr, u8 data)
+{
+	if (likely(object->func->wr08))
+		return object->func->wr08(object, addr, data);
+	return -ENODEV;
+}
+
+int
+nvkm_object_wr16(struct nvkm_object *object, u64 addr, u16 data)
+{
+	if (likely(object->func->wr16))
+		return object->func->wr16(object, addr, data);
+	return -ENODEV;
+}
+
+int
+nvkm_object_wr32(struct nvkm_object *object, u64 addr, u32 data)
+{
+	if (likely(object->func->wr32))
+		return object->func->wr32(object, addr, data);
+	return -ENODEV;
+}
+
+int
+nvkm_object_bind(struct nvkm_object *object, struct nvkm_gpuobj *gpuobj,
+		 int align, struct nvkm_gpuobj **pgpuobj)
+{
+	if (object->func->bind)
+		return object->func->bind(object, gpuobj, align, pgpuobj);
+	return -ENODEV;
+}
+
+int
+nvkm_object_fini(struct nvkm_object *object, bool suspend)
+{
+	const char *action = suspend ? "suspend" : "fini";
+	struct nvkm_object *child;
+	s64 time;
+	int ret;
+
+	nvif_debug(object, "%s children...\n", action);
+	time = ktime_to_us(ktime_get());
+	list_for_each_entry(child, &object->tree, head) {
+		ret = nvkm_object_fini(child, suspend);
+		if (ret && suspend)
+			goto fail_child;
+	}
+
+	nvif_debug(object, "%s running...\n", action);
+	if (object->func->fini) {
+		ret = object->func->fini(object, suspend);
+		if (ret) {
+			nvif_error(object, "%s failed with %d\n", action, ret);
+			if (suspend)
+				goto fail;
+		}
+	}
+
+	time = ktime_to_us(ktime_get()) - time;
+	nvif_debug(object, "%s completed in %lldus\n", action, time);
+	return 0;
+
+fail:
+	if (object->func->init) {
+		int rret = object->func->init(object);
+		if (rret)
+			nvif_fatal(object, "failed to restart, %d\n", rret);
+	}
+fail_child:
+	list_for_each_entry_continue_reverse(child, &object->tree, head) {
+		nvkm_object_init(child);
+	}
+	return ret;
+}
+
+int
+nvkm_object_init(struct nvkm_object *object)
+{
+	struct nvkm_object *child;
+	s64 time;
+	int ret;
+
+	nvif_debug(object, "init running...\n");
+	time = ktime_to_us(ktime_get());
+	if (object->func->init) {
+		ret = object->func->init(object);
+		if (ret)
+			goto fail;
+	}
+
+	nvif_debug(object, "init children...\n");
+	list_for_each_entry(child, &object->tree, head) {
+		ret = nvkm_object_init(child);
+		if (ret)
+			goto fail_child;
+	}
+
+	time = ktime_to_us(ktime_get()) - time;
+	nvif_debug(object, "init completed in %lldus\n", time);
+	return 0;
+
+fail_child:
+	list_for_each_entry_continue_reverse(child, &object->tree, head)
+		nvkm_object_fini(child, false);
+fail:
+	nvif_error(object, "init failed with %d\n", ret);
+	if (object->func->fini)
+		object->func->fini(object, false);
+	return ret;
+}
+
+void *
+nvkm_object_dtor(struct nvkm_object *object)
+{
+	struct nvkm_object *child, *ctemp;
+	void *data = object;
+	s64 time;
+
+	nvif_debug(object, "destroy children...\n");
+	time = ktime_to_us(ktime_get());
+	list_for_each_entry_safe(child, ctemp, &object->tree, head) {
+		nvkm_object_del(&child);
+	}
+
+	nvif_debug(object, "destroy running...\n");
+	nvkm_object_unmap(object);
+	if (object->func->dtor)
+		data = object->func->dtor(object);
+	nvkm_engine_unref(&object->engine);
+	time = ktime_to_us(ktime_get()) - time;
+	nvif_debug(object, "destroy completed in %lldus...\n", time);
+	return data;
+}
+
+void
+nvkm_object_del(struct nvkm_object **pobject)
+{
+	struct nvkm_object *object = *pobject;
+	if (object && !WARN_ON(!object->func)) {
+		*pobject = nvkm_object_dtor(object);
+		nvkm_object_remove(object);
+		list_del(&object->head);
+		kfree(*pobject);
+		*pobject = NULL;
+	}
+}
+
+void
+nvkm_object_ctor(const struct nvkm_object_func *func,
+		 const struct nvkm_oclass *oclass, struct nvkm_object *object)
+{
+	object->func = func;
+	object->client = oclass->client;
+	object->engine = nvkm_engine_ref(oclass->engine);
+	object->oclass = oclass->base.oclass;
+	object->handle = oclass->handle;
+	object->route  = oclass->route;
+	object->token  = oclass->token;
+	object->object = oclass->object;
+	INIT_LIST_HEAD(&object->head);
+	INIT_LIST_HEAD(&object->tree);
+	RB_CLEAR_NODE(&object->node);
+	WARN_ON(IS_ERR(object->engine));
+}
+
+int
+nvkm_object_new_(const struct nvkm_object_func *func,
+		 const struct nvkm_oclass *oclass, void *data, u32 size,
+		 struct nvkm_object **pobject)
+{
+	if (size == 0) {
+		if (!(*pobject = kzalloc(sizeof(**pobject), GFP_KERNEL)))
+			return -ENOMEM;
+		nvkm_object_ctor(func, oclass, *pobject);
+		return 0;
+	}
+	return -ENOSYS;
+}
+
+static const struct nvkm_object_func
+nvkm_object_func = {
+};
+
+int
+nvkm_object_new(const struct nvkm_oclass *oclass, void *data, u32 size,
+		struct nvkm_object **pobject)
+{
+	const struct nvkm_object_func *func =
+		oclass->base.func ? oclass->base.func : &nvkm_object_func;
+	return nvkm_object_new_(func, oclass, data, size, pobject);
+}