diff options
Diffstat (limited to 'kernel/drivers/gpu/drm/nouveau/nvkm/core/engine.c')
-rw-r--r-- | kernel/drivers/gpu/drm/nouveau/nvkm/core/engine.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/core/engine.c b/kernel/drivers/gpu/drm/nouveau/nvkm/core/engine.c new file mode 100644 index 000000000..60820173c --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nvkm/core/engine.c @@ -0,0 +1,75 @@ +/* + * 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/engine.h> +#include <core/device.h> +#include <core/option.h> + +struct nvkm_engine * +nvkm_engine(void *obj, int idx) +{ + obj = nvkm_subdev(obj, idx); + if (obj && nv_iclass(obj, NV_ENGINE_CLASS)) + return nv_engine(obj); + return NULL; +} + +int +nvkm_engine_create_(struct nvkm_object *parent, struct nvkm_object *engobj, + struct nvkm_oclass *oclass, bool enable, + const char *iname, const char *fname, + int length, void **pobject) +{ + struct nvkm_engine *engine; + int ret; + + ret = nvkm_subdev_create_(parent, engobj, oclass, NV_ENGINE_CLASS, + iname, fname, length, pobject); + engine = *pobject; + if (ret) + return ret; + + if (parent) { + struct nvkm_device *device = nv_device(parent); + int engidx = nv_engidx(engine); + + if (device->disable_mask & (1ULL << engidx)) { + if (!nvkm_boolopt(device->cfgopt, iname, false)) { + nv_debug(engine, "engine disabled by hw/fw\n"); + return -ENODEV; + } + + nv_warn(engine, "ignoring hw/fw engine disable\n"); + } + + if (!nvkm_boolopt(device->cfgopt, iname, enable)) { + if (!enable) + nv_warn(engine, "disabled, %s=1 to enable\n", iname); + return -ENODEV; + } + } + + INIT_LIST_HEAD(&engine->contexts); + spin_lock_init(&engine->lock); + return 0; +} |