/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include <core/engine.h>
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#include <core/device.h>
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#include <core/option.h>
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#include <subdev/fb.h>
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bool
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nvkm_engine_chsw_load(struct nvkm_engine *engine)
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{
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if (engine->func->chsw_load)
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return engine->func->chsw_load(engine);
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return false;
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}
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void
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nvkm_engine_unref(struct nvkm_engine **pengine)
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{
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struct nvkm_engine *engine = *pengine;
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if (engine) {
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mutex_lock(&engine->subdev.mutex);
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if (--engine->usecount == 0)
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nvkm_subdev_fini(&engine->subdev, false);
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mutex_unlock(&engine->subdev.mutex);
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*pengine = NULL;
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}
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}
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struct nvkm_engine *
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nvkm_engine_ref(struct nvkm_engine *engine)
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{
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if (engine) {
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mutex_lock(&engine->subdev.mutex);
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if (++engine->usecount == 1) {
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int ret = nvkm_subdev_init(&engine->subdev);
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if (ret) {
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engine->usecount--;
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mutex_unlock(&engine->subdev.mutex);
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return ERR_PTR(ret);
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}
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}
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mutex_unlock(&engine->subdev.mutex);
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}
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return engine;
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}
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void
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nvkm_engine_tile(struct nvkm_engine *engine, int region)
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{
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struct nvkm_fb *fb = engine->subdev.device->fb;
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if (engine->func->tile)
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engine->func->tile(engine, region, &fb->tile.region[region]);
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}
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static void
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nvkm_engine_intr(struct nvkm_subdev *subdev)
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{
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struct nvkm_engine *engine = nvkm_engine(subdev);
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if (engine->func->intr)
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engine->func->intr(engine);
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}
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static int
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nvkm_engine_info(struct nvkm_subdev *subdev, u64 mthd, u64 *data)
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{
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struct nvkm_engine *engine = nvkm_engine(subdev);
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if (engine->func->info) {
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if (!IS_ERR((engine = nvkm_engine_ref(engine)))) {
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int ret = engine->func->info(engine, mthd, data);
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nvkm_engine_unref(&engine);
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return ret;
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}
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return PTR_ERR(engine);
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}
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return -ENOSYS;
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}
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static int
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nvkm_engine_fini(struct nvkm_subdev *subdev, bool suspend)
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{
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struct nvkm_engine *engine = nvkm_engine(subdev);
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if (engine->func->fini)
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return engine->func->fini(engine, suspend);
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return 0;
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}
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static int
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nvkm_engine_init(struct nvkm_subdev *subdev)
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{
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struct nvkm_engine *engine = nvkm_engine(subdev);
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struct nvkm_fb *fb = subdev->device->fb;
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int ret = 0, i;
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s64 time;
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if (!engine->usecount) {
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nvkm_trace(subdev, "init skipped, engine has no users\n");
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return ret;
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}
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if (engine->func->oneinit && !engine->subdev.oneinit) {
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nvkm_trace(subdev, "one-time init running...\n");
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time = ktime_to_us(ktime_get());
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ret = engine->func->oneinit(engine);
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if (ret) {
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nvkm_trace(subdev, "one-time init failed, %d\n", ret);
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return ret;
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}
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engine->subdev.oneinit = true;
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time = ktime_to_us(ktime_get()) - time;
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nvkm_trace(subdev, "one-time init completed in %lldus\n", time);
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}
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if (engine->func->init)
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ret = engine->func->init(engine);
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for (i = 0; fb && i < fb->tile.regions; i++)
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nvkm_engine_tile(engine, i);
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return ret;
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}
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static int
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nvkm_engine_preinit(struct nvkm_subdev *subdev)
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{
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struct nvkm_engine *engine = nvkm_engine(subdev);
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if (engine->func->preinit)
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engine->func->preinit(engine);
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return 0;
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}
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static void *
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nvkm_engine_dtor(struct nvkm_subdev *subdev)
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{
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struct nvkm_engine *engine = nvkm_engine(subdev);
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if (engine->func->dtor)
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return engine->func->dtor(engine);
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return engine;
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}
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static const struct nvkm_subdev_func
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nvkm_engine_func = {
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.dtor = nvkm_engine_dtor,
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.preinit = nvkm_engine_preinit,
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.init = nvkm_engine_init,
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.fini = nvkm_engine_fini,
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.info = nvkm_engine_info,
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.intr = nvkm_engine_intr,
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};
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int
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nvkm_engine_ctor(const struct nvkm_engine_func *func,
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struct nvkm_device *device, int index, bool enable,
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struct nvkm_engine *engine)
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{
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nvkm_subdev_ctor(&nvkm_engine_func, device, index, &engine->subdev);
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engine->func = func;
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if (!nvkm_boolopt(device->cfgopt, nvkm_subdev_name[index], enable)) {
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nvkm_debug(&engine->subdev, "disabled\n");
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return -ENODEV;
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}
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spin_lock_init(&engine->lock);
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return 0;
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}
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int
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nvkm_engine_new_(const struct nvkm_engine_func *func,
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struct nvkm_device *device, int index, bool enable,
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struct nvkm_engine **pengine)
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{
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if (!(*pengine = kzalloc(sizeof(**pengine), GFP_KERNEL)))
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return -ENOMEM;
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return nvkm_engine_ctor(func, device, index, enable, *pengine);
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}
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