diff options
Diffstat (limited to 'nvkm/core/object.c')
-rw-r--r-- | nvkm/core/object.c | 468 |
1 files changed, 468 insertions, 0 deletions
diff --git a/nvkm/core/object.c b/nvkm/core/object.c new file mode 100644 index 000000000..0daab62ea --- /dev/null +++ b/nvkm/core/object.c @@ -0,0 +1,468 @@ +/* + * 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/parent.h> +#include <core/namedb.h> +#include <core/handle.h> +#include <core/engine.h> + +#ifdef NOUVEAU_OBJECT_MAGIC +static struct list_head _objlist = LIST_HEAD_INIT(_objlist); +static DEFINE_SPINLOCK(_objlist_lock); +#endif + +int +nouveau_object_create_(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, u32 pclass, + int size, void **pobject) +{ + struct nouveau_object *object; + + object = *pobject = kzalloc(size, GFP_KERNEL); + if (!object) + return -ENOMEM; + + nouveau_object_ref(parent, &object->parent); + nouveau_object_ref(engine, &object->engine); + object->oclass = oclass; + object->oclass->handle |= pclass; + atomic_set(&object->refcount, 1); + atomic_set(&object->usecount, 0); + +#ifdef NOUVEAU_OBJECT_MAGIC + object->_magic = NOUVEAU_OBJECT_MAGIC; + spin_lock(&_objlist_lock); + list_add(&object->list, &_objlist); + spin_unlock(&_objlist_lock); +#endif + return 0; +} + +static int +_nouveau_object_ctor(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nouveau_object *object; + int ret; + + ret = nouveau_object_create(parent, engine, oclass, 0, &object); + *pobject = nv_object(object); + if (ret) + return ret; + + return 0; +} + +void +nouveau_object_destroy(struct nouveau_object *object) +{ +#ifdef NOUVEAU_OBJECT_MAGIC + spin_lock(&_objlist_lock); + list_del(&object->list); + spin_unlock(&_objlist_lock); +#endif + nouveau_object_ref(NULL, &object->engine); + nouveau_object_ref(NULL, &object->parent); + kfree(object); +} + +static void +_nouveau_object_dtor(struct nouveau_object *object) +{ + nouveau_object_destroy(object); +} + +int +nouveau_object_init(struct nouveau_object *object) +{ + return 0; +} + +static int +_nouveau_object_init(struct nouveau_object *object) +{ + return nouveau_object_init(object); +} + +int +nouveau_object_fini(struct nouveau_object *object, bool suspend) +{ + return 0; +} + +static int +_nouveau_object_fini(struct nouveau_object *object, bool suspend) +{ + return nouveau_object_fini(object, suspend); +} + +struct nouveau_ofuncs +nouveau_object_ofuncs = { + .ctor = _nouveau_object_ctor, + .dtor = _nouveau_object_dtor, + .init = _nouveau_object_init, + .fini = _nouveau_object_fini, +}; + +int +nouveau_object_ctor(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nouveau_ofuncs *ofuncs = oclass->ofuncs; + int ret; + + *pobject = NULL; + + ret = ofuncs->ctor(parent, engine, oclass, data, size, pobject); + if (ret < 0) { + if (ret != -ENODEV) { + nv_error(parent, "failed to create 0x%08x, %d\n", + oclass->handle, ret); + } + + if (*pobject) { + ofuncs->dtor(*pobject); + *pobject = NULL; + } + + return ret; + } + + nv_debug(*pobject, "created\n"); + return 0; +} + +static void +nouveau_object_dtor(struct nouveau_object *object) +{ + nv_debug(object, "destroying\n"); + nv_ofuncs(object)->dtor(object); +} + +void +nouveau_object_ref(struct nouveau_object *obj, struct nouveau_object **ref) +{ + if (obj) { + atomic_inc(&obj->refcount); + nv_trace(obj, "inc() == %d\n", atomic_read(&obj->refcount)); + } + + if (*ref) { + int dead = atomic_dec_and_test(&(*ref)->refcount); + nv_trace(*ref, "dec() == %d\n", atomic_read(&(*ref)->refcount)); + if (dead) + nouveau_object_dtor(*ref); + } + + *ref = obj; +} + +int +nouveau_object_new(struct nouveau_object *client, u32 _parent, u32 _handle, + u16 _oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nouveau_object *parent = NULL; + struct nouveau_object *engctx = NULL; + struct nouveau_object *object = NULL; + struct nouveau_object *engine; + struct nouveau_oclass *oclass; + struct nouveau_handle *handle; + int ret; + + /* lookup parent object and ensure it *is* a parent */ + parent = nouveau_handle_ref(client, _parent); + if (!parent) { + nv_error(client, "parent 0x%08x not found\n", _parent); + return -ENOENT; + } + + if (!nv_iclass(parent, NV_PARENT_CLASS)) { + nv_error(parent, "cannot have children\n"); + ret = -EINVAL; + goto fail_class; + } + + /* check that parent supports the requested subclass */ + ret = nouveau_parent_sclass(parent, _oclass, &engine, &oclass); + if (ret) { + nv_debug(parent, "illegal class 0x%04x\n", _oclass); + goto fail_class; + } + + /* make sure engine init has been completed *before* any objects + * it controls are created - the constructors may depend on + * state calculated at init (ie. default context construction) + */ + if (engine) { + ret = nouveau_object_inc(engine); + if (ret) + goto fail_class; + } + + /* if engine requires it, create a context object to insert + * between the parent and its children (eg. PGRAPH context) + */ + if (engine && nv_engine(engine)->cclass) { + ret = nouveau_object_ctor(parent, engine, + nv_engine(engine)->cclass, + data, size, &engctx); + if (ret) + goto fail_engctx; + } else { + nouveau_object_ref(parent, &engctx); + } + + /* finally, create new object and bind it to its handle */ + ret = nouveau_object_ctor(engctx, engine, oclass, data, size, &object); + *pobject = object; + if (ret) + goto fail_ctor; + + ret = nouveau_object_inc(object); + if (ret) + goto fail_init; + + ret = nouveau_handle_create(parent, _parent, _handle, object, &handle); + if (ret) + goto fail_handle; + + ret = nouveau_handle_init(handle); + if (ret) + nouveau_handle_destroy(handle); + +fail_handle: + nouveau_object_dec(object, false); +fail_init: + nouveau_object_ref(NULL, &object); +fail_ctor: + nouveau_object_ref(NULL, &engctx); +fail_engctx: + if (engine) + nouveau_object_dec(engine, false); +fail_class: + nouveau_object_ref(NULL, &parent); + return ret; +} + +int +nouveau_object_del(struct nouveau_object *client, u32 _parent, u32 _handle) +{ + struct nouveau_object *parent = NULL; + struct nouveau_object *namedb = NULL; + struct nouveau_handle *handle = NULL; + int ret = -EINVAL; + + parent = nouveau_handle_ref(client, _parent); + if (!parent) + return -ENOENT; + + namedb = nv_pclass(parent, NV_NAMEDB_CLASS); + if (namedb) { + handle = nouveau_namedb_get(nv_namedb(namedb), _handle); + if (handle) { + nouveau_namedb_put(handle); + nouveau_handle_fini(handle, false); + nouveau_handle_destroy(handle); + } + } + + nouveau_object_ref(NULL, &parent); + return ret; +} + +int +nouveau_object_inc(struct nouveau_object *object) +{ + int ref = atomic_add_return(1, &object->usecount); + int ret; + + nv_trace(object, "use(+1) == %d\n", atomic_read(&object->usecount)); + if (ref != 1) + return 0; + + nv_trace(object, "initialising...\n"); + if (object->parent) { + ret = nouveau_object_inc(object->parent); + if (ret) { + nv_error(object, "parent failed, %d\n", ret); + goto fail_parent; + } + } + + if (object->engine) { + mutex_lock(&nv_subdev(object->engine)->mutex); + ret = nouveau_object_inc(object->engine); + mutex_unlock(&nv_subdev(object->engine)->mutex); + if (ret) { + nv_error(object, "engine failed, %d\n", ret); + goto fail_engine; + } + } + + ret = nv_ofuncs(object)->init(object); + if (ret) { + nv_error(object, "init failed, %d\n", ret); + goto fail_self; + } + + nv_debug(object, "initialised\n"); + return 0; + +fail_self: + if (object->engine) { + mutex_lock(&nv_subdev(object->engine)->mutex); + nouveau_object_dec(object->engine, false); + mutex_unlock(&nv_subdev(object->engine)->mutex); + } +fail_engine: + if (object->parent) + nouveau_object_dec(object->parent, false); +fail_parent: + atomic_dec(&object->usecount); + return ret; +} + +static int +nouveau_object_decf(struct nouveau_object *object) +{ + int ret; + + nv_trace(object, "stopping...\n"); + + ret = nv_ofuncs(object)->fini(object, false); + if (ret) + nv_warn(object, "failed fini, %d\n", ret); + + if (object->engine) { + mutex_lock(&nv_subdev(object->engine)->mutex); + nouveau_object_dec(object->engine, false); + mutex_unlock(&nv_subdev(object->engine)->mutex); + } + + if (object->parent) + nouveau_object_dec(object->parent, false); + + nv_debug(object, "stopped\n"); + return 0; +} + +static int +nouveau_object_decs(struct nouveau_object *object) +{ + int ret, rret; + + nv_trace(object, "suspending...\n"); + + ret = nv_ofuncs(object)->fini(object, true); + if (ret) { + nv_error(object, "failed suspend, %d\n", ret); + return ret; + } + + if (object->engine) { + mutex_lock(&nv_subdev(object->engine)->mutex); + ret = nouveau_object_dec(object->engine, true); + mutex_unlock(&nv_subdev(object->engine)->mutex); + if (ret) { + nv_warn(object, "engine failed suspend, %d\n", ret); + goto fail_engine; + } + } + + if (object->parent) { + ret = nouveau_object_dec(object->parent, true); + if (ret) { + nv_warn(object, "parent failed suspend, %d\n", ret); + goto fail_parent; + } + } + + nv_debug(object, "suspended\n"); + return 0; + +fail_parent: + if (object->engine) { + mutex_lock(&nv_subdev(object->engine)->mutex); + rret = nouveau_object_inc(object->engine); + mutex_unlock(&nv_subdev(object->engine)->mutex); + if (rret) + nv_fatal(object, "engine failed to reinit, %d\n", rret); + } + +fail_engine: + rret = nv_ofuncs(object)->init(object); + if (rret) + nv_fatal(object, "failed to reinit, %d\n", rret); + + return ret; +} + +int +nouveau_object_dec(struct nouveau_object *object, bool suspend) +{ + int ref = atomic_add_return(-1, &object->usecount); + int ret; + + nv_trace(object, "use(-1) == %d\n", atomic_read(&object->usecount)); + + if (ref == 0) { + if (suspend) + ret = nouveau_object_decs(object); + else + ret = nouveau_object_decf(object); + + if (ret) { + atomic_inc(&object->usecount); + return ret; + } + } + + return 0; +} + +void +nouveau_object_debug(void) +{ +#ifdef NOUVEAU_OBJECT_MAGIC + struct nouveau_object *object; + if (!list_empty(&_objlist)) { + nv_fatal(NULL, "*******************************************\n"); + nv_fatal(NULL, "* AIIIII! object(s) still exist!!!\n"); + nv_fatal(NULL, "*******************************************\n"); + list_for_each_entry(object, &_objlist, list) { + nv_fatal(object, "%p/%p/%d/%d\n", + object->parent, object->engine, + atomic_read(&object->refcount), + atomic_read(&object->usecount)); + } + } +#endif +} |