drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/engine.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/engine.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/engine.c
Extension
.c
Size
4415 bytes
Lines
190
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct nvkm_rm_engine {
	struct nvkm_engine engine;

	struct nvkm_engine_func func;
};

struct nvkm_rm_engine_obj {
	struct nvkm_object object;
	struct nvkm_gsp_object rm;
};

static void*
nvkm_rm_engine_obj_dtor(struct nvkm_object *object)
{
	struct nvkm_rm_engine_obj *obj = container_of(object, typeof(*obj), object);

	nvkm_gsp_rm_free(&obj->rm);
	return obj;
}

static const struct nvkm_object_func
nvkm_rm_engine_obj = {
	.dtor = nvkm_rm_engine_obj_dtor,
};

int
nvkm_rm_engine_obj_new(struct nvkm_gsp_object *chan, int chid, const struct nvkm_oclass *oclass,
		       struct nvkm_object **pobject)
{
	struct nvkm_rm *rm = chan->client->gsp->rm;
	const int inst = oclass->engine->subdev.inst;
	const u32 class = oclass->base.oclass;
	const u32 handle = oclass->handle;
	struct nvkm_rm_engine_obj *obj;
	int ret;

	obj = kzalloc_obj(*obj);
	if (!obj)
		return -ENOMEM;

	switch (oclass->engine->subdev.type) {
	case NVKM_ENGINE_CE:
		ret = rm->api->ce->alloc(chan, handle, class, inst, &obj->rm);
		break;
	case NVKM_ENGINE_GR:
		ret = nvkm_gsp_rm_alloc(chan, handle, class, 0, &obj->rm);
		break;
	case NVKM_ENGINE_NVDEC:
		ret = rm->api->nvdec->alloc(chan, handle, class, inst, &obj->rm);
		break;
	case NVKM_ENGINE_NVENC:
		ret = rm->api->nvenc->alloc(chan, handle, class, inst, &obj->rm);
		break;
	case NVKM_ENGINE_NVJPG:
		ret = rm->api->nvjpg->alloc(chan, handle, class, inst, &obj->rm);
		break;
	case NVKM_ENGINE_OFA:
		ret = rm->api->ofa->alloc(chan, handle, class, inst, &obj->rm);
		break;
	default:
		ret = -EINVAL;
		WARN_ON(1);
		break;
	}

	if (ret) {
		kfree(obj);
		return ret;
	}

	nvkm_object_ctor(&nvkm_rm_engine_obj, oclass, &obj->object);
	*pobject = &obj->object;
	return 0;
}

static int
nvkm_rm_engine_obj_ctor(const struct nvkm_oclass *oclass, void *argv, u32 argc,
			struct nvkm_object **pobject)
{
	struct nvkm_chan *chan = nvkm_uchan_chan(oclass->parent);

	return nvkm_rm_engine_obj_new(&chan->rm.object, chan->id, oclass, pobject);
}

static void *
nvkm_rm_engine_dtor(struct nvkm_engine *engine)
{
	kfree(engine->func);
	return engine;
}

Annotation

Implementation Notes