--- /dev/null
+/*
+ * 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/namedb.h>
+#include <core/gpuobj.h>
+#include <core/handle.h>
+
+static struct nvkm_handle *
+nvkm_namedb_lookup(struct nvkm_namedb *namedb, u32 name)
+{
+ struct nvkm_handle *handle;
+
+ list_for_each_entry(handle, &namedb->list, node) {
+ if (handle->name == name)
+ return handle;
+ }
+
+ return NULL;
+}
+
+static struct nvkm_handle *
+nvkm_namedb_lookup_class(struct nvkm_namedb *namedb, u16 oclass)
+{
+ struct nvkm_handle *handle;
+
+ list_for_each_entry(handle, &namedb->list, node) {
+ if (nv_mclass(handle->object) == oclass)
+ return handle;
+ }
+
+ return NULL;
+}
+
+static struct nvkm_handle *
+nvkm_namedb_lookup_vinst(struct nvkm_namedb *namedb, u64 vinst)
+{
+ struct nvkm_handle *handle;
+
+ list_for_each_entry(handle, &namedb->list, node) {
+ if (nv_iclass(handle->object, NV_GPUOBJ_CLASS)) {
+ if (nv_gpuobj(handle->object)->addr == vinst)
+ return handle;
+ }
+ }
+
+ return NULL;
+}
+
+static struct nvkm_handle *
+nvkm_namedb_lookup_cinst(struct nvkm_namedb *namedb, u32 cinst)
+{
+ struct nvkm_handle *handle;
+
+ list_for_each_entry(handle, &namedb->list, node) {
+ if (nv_iclass(handle->object, NV_GPUOBJ_CLASS)) {
+ if (nv_gpuobj(handle->object)->node &&
+ nv_gpuobj(handle->object)->node->offset == cinst)
+ return handle;
+ }
+ }
+
+ return NULL;
+}
+
+int
+nvkm_namedb_insert(struct nvkm_namedb *namedb, u32 name,
+ struct nvkm_object *object,
+ struct nvkm_handle *handle)
+{
+ int ret = -EEXIST;
+ write_lock_irq(&namedb->lock);
+ if (!nvkm_namedb_lookup(namedb, name)) {
+ nvkm_object_ref(object, &handle->object);
+ handle->namedb = namedb;
+ list_add(&handle->node, &namedb->list);
+ ret = 0;
+ }
+ write_unlock_irq(&namedb->lock);
+ return ret;
+}
+
+void
+nvkm_namedb_remove(struct nvkm_handle *handle)
+{
+ struct nvkm_namedb *namedb = handle->namedb;
+ struct nvkm_object *object = handle->object;
+ write_lock_irq(&namedb->lock);
+ list_del(&handle->node);
+ write_unlock_irq(&namedb->lock);
+ nvkm_object_ref(NULL, &object);
+}
+
+struct nvkm_handle *
+nvkm_namedb_get(struct nvkm_namedb *namedb, u32 name)
+{
+ struct nvkm_handle *handle;
+ read_lock(&namedb->lock);
+ handle = nvkm_namedb_lookup(namedb, name);
+ if (handle == NULL)
+ read_unlock(&namedb->lock);
+ return handle;
+}
+
+struct nvkm_handle *
+nvkm_namedb_get_class(struct nvkm_namedb *namedb, u16 oclass)
+{
+ struct nvkm_handle *handle;
+ read_lock(&namedb->lock);
+ handle = nvkm_namedb_lookup_class(namedb, oclass);
+ if (handle == NULL)
+ read_unlock(&namedb->lock);
+ return handle;
+}
+
+struct nvkm_handle *
+nvkm_namedb_get_vinst(struct nvkm_namedb *namedb, u64 vinst)
+{
+ struct nvkm_handle *handle;
+ read_lock(&namedb->lock);
+ handle = nvkm_namedb_lookup_vinst(namedb, vinst);
+ if (handle == NULL)
+ read_unlock(&namedb->lock);
+ return handle;
+}
+
+struct nvkm_handle *
+nvkm_namedb_get_cinst(struct nvkm_namedb *namedb, u32 cinst)
+{
+ struct nvkm_handle *handle;
+ read_lock(&namedb->lock);
+ handle = nvkm_namedb_lookup_cinst(namedb, cinst);
+ if (handle == NULL)
+ read_unlock(&namedb->lock);
+ return handle;
+}
+
+void
+nvkm_namedb_put(struct nvkm_handle *handle)
+{
+ if (handle)
+ read_unlock(&handle->namedb->lock);
+}
+
+int
+nvkm_namedb_create_(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nvkm_oclass *oclass, u32 pclass,
+ struct nvkm_oclass *sclass, u64 engcls,
+ int length, void **pobject)
+{
+ struct nvkm_namedb *namedb;
+ int ret;
+
+ ret = nvkm_parent_create_(parent, engine, oclass, pclass |
+ NV_NAMEDB_CLASS, sclass, engcls,
+ length, pobject);
+ namedb = *pobject;
+ if (ret)
+ return ret;
+
+ rwlock_init(&namedb->lock);
+ INIT_LIST_HEAD(&namedb->list);
+ return 0;
+}
+
+int
+_nvkm_namedb_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nvkm_oclass *oclass, void *data, u32 size,
+ struct nvkm_object **pobject)
+{
+ struct nvkm_namedb *object;
+ int ret;
+
+ ret = nvkm_namedb_create(parent, engine, oclass, 0, NULL, 0, &object);
+ *pobject = nv_object(object);
+ if (ret)
+ return ret;
+
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff