diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/core/handle.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/core/handle.c | 115 |
1 files changed, 113 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/core/core/handle.c b/drivers/gpu/drm/nouveau/core/core/handle.c index 264c2b338ac3..a490b805d7e3 100644 --- a/drivers/gpu/drm/nouveau/core/core/handle.c +++ b/drivers/gpu/drm/nouveau/core/core/handle.c @@ -146,9 +146,7 @@ nouveau_handle_create(struct nouveau_object *parent, u32 _parent, u32 _handle, } hprintk(handle, TRACE, "created\n"); - *phandle = handle; - return 0; } @@ -224,3 +222,116 @@ nouveau_handle_put(struct nouveau_handle *handle) if (handle) nouveau_namedb_put(handle); } + +int +nouveau_handle_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_handle_del(struct nouveau_object *client, u32 _parent, u32 _handle) +{ + struct nouveau_object *parent = NULL; + struct nouveau_object *namedb = NULL; + struct nouveau_handle *handle = NULL; + + 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 handle ? 0 : -EINVAL; +} |