--- /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/handle.h>
+#include <core/client.h>
+
+#define hprintk(h,l,f,a...) do { \
+ struct nvkm_client *c = nvkm_client((h)->object); \
+ struct nvkm_handle *p = (h)->parent; u32 n = p ? p->name : ~0; \
+ nv_printk((c), l, "0x%08x:0x%08x "f, n, (h)->name, ##a); \
+} while(0)
+
+int
+nvkm_handle_init(struct nvkm_handle *handle)
+{
+ struct nvkm_handle *item;
+ int ret;
+
+ hprintk(handle, TRACE, "init running\n");
+ ret = nvkm_object_inc(handle->object);
+ if (ret)
+ return ret;
+
+ hprintk(handle, TRACE, "init children\n");
+ list_for_each_entry(item, &handle->tree, head) {
+ ret = nvkm_handle_init(item);
+ if (ret)
+ goto fail;
+ }
+
+ hprintk(handle, TRACE, "init completed\n");
+ return 0;
+fail:
+ hprintk(handle, ERROR, "init failed with %d\n", ret);
+ list_for_each_entry_continue_reverse(item, &handle->tree, head) {
+ nvkm_handle_fini(item, false);
+ }
+
+ nvkm_object_dec(handle->object, false);
+ return ret;
+}
+
+int
+nvkm_handle_fini(struct nvkm_handle *handle, bool suspend)
+{
+ static char *name[2] = { "fini", "suspend" };
+ struct nvkm_handle *item;
+ int ret;
+
+ hprintk(handle, TRACE, "%s children\n", name[suspend]);
+ list_for_each_entry(item, &handle->tree, head) {
+ ret = nvkm_handle_fini(item, suspend);
+ if (ret && suspend)
+ goto fail;
+ }
+
+ hprintk(handle, TRACE, "%s running\n", name[suspend]);
+ if (handle->object) {
+ ret = nvkm_object_dec(handle->object, suspend);
+ if (ret && suspend)
+ goto fail;
+ }
+
+ hprintk(handle, TRACE, "%s completed\n", name[suspend]);
+ return 0;
+fail:
+ hprintk(handle, ERROR, "%s failed with %d\n", name[suspend], ret);
+ list_for_each_entry_continue_reverse(item, &handle->tree, head) {
+ int rret = nvkm_handle_init(item);
+ if (rret)
+ hprintk(handle, FATAL, "failed to restart, %d\n", rret);
+ }
+
+ return ret;
+}
+
+int
+nvkm_handle_create(struct nvkm_object *parent, u32 _parent, u32 _handle,
+ struct nvkm_object *object, struct nvkm_handle **phandle)
+{
+ struct nvkm_object *namedb;
+ struct nvkm_handle *handle;
+ int ret;
+
+ namedb = parent;
+ while (!nv_iclass(namedb, NV_NAMEDB_CLASS))
+ namedb = namedb->parent;
+
+ handle = kzalloc(sizeof(*handle), GFP_KERNEL);
+ if (!handle)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&handle->head);
+ INIT_LIST_HEAD(&handle->tree);
+ handle->name = _handle;
+ handle->priv = ~0;
+
+ ret = nvkm_namedb_insert(nv_namedb(namedb), _handle, object, handle);
+ if (ret) {
+ kfree(handle);
+ return ret;
+ }
+
+ if (nv_parent(parent)->object_attach) {
+ ret = nv_parent(parent)->object_attach(parent, object, _handle);
+ if (ret < 0) {
+ nvkm_handle_destroy(handle);
+ return ret;
+ }
+
+ handle->priv = ret;
+ }
+
+ if (object != namedb) {
+ while (!nv_iclass(namedb, NV_CLIENT_CLASS))
+ namedb = namedb->parent;
+
+ handle->parent = nvkm_namedb_get(nv_namedb(namedb), _parent);
+ if (handle->parent) {
+ list_add(&handle->head, &handle->parent->tree);
+ nvkm_namedb_put(handle->parent);
+ }
+ }
+
+ hprintk(handle, TRACE, "created\n");
+ *phandle = handle;
+ return 0;
+}
+
+void
+nvkm_handle_destroy(struct nvkm_handle *handle)
+{
+ struct nvkm_handle *item, *temp;
+
+ hprintk(handle, TRACE, "destroy running\n");
+ list_for_each_entry_safe(item, temp, &handle->tree, head) {
+ nvkm_handle_destroy(item);
+ }
+ list_del(&handle->head);
+
+ if (handle->priv != ~0) {
+ struct nvkm_object *parent = handle->parent->object;
+ nv_parent(parent)->object_detach(parent, handle->priv);
+ }
+
+ hprintk(handle, TRACE, "destroy completed\n");
+ nvkm_namedb_remove(handle);
+ kfree(handle);
+}
+
+struct nvkm_object *
+nvkm_handle_ref(struct nvkm_object *parent, u32 name)
+{
+ struct nvkm_object *object = NULL;
+ struct nvkm_handle *handle;
+
+ while (!nv_iclass(parent, NV_NAMEDB_CLASS))
+ parent = parent->parent;
+
+ handle = nvkm_namedb_get(nv_namedb(parent), name);
+ if (handle) {
+ nvkm_object_ref(handle->object, &object);
+ nvkm_namedb_put(handle);
+ }
+
+ return object;
+}
+
+struct nvkm_handle *
+nvkm_handle_get_class(struct nvkm_object *engctx, u16 oclass)
+{
+ struct nvkm_namedb *namedb;
+ if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
+ return nvkm_namedb_get_class(namedb, oclass);
+ return NULL;
+}
+
+struct nvkm_handle *
+nvkm_handle_get_vinst(struct nvkm_object *engctx, u64 vinst)
+{
+ struct nvkm_namedb *namedb;
+ if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
+ return nvkm_namedb_get_vinst(namedb, vinst);
+ return NULL;
+}
+
+struct nvkm_handle *
+nvkm_handle_get_cinst(struct nvkm_object *engctx, u32 cinst)
+{
+ struct nvkm_namedb *namedb;
+ if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
+ return nvkm_namedb_get_cinst(namedb, cinst);
+ return NULL;
+}
+
+void
+nvkm_handle_put(struct nvkm_handle *handle)
+{
+ if (handle)
+ nvkm_namedb_put(handle);
+}
Code Review / kvmfornfv.git / blobdiff