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1/*2 * Copyright 2012 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs23 */24#include <core/engine.h>25#include <core/device.h>26#include <core/option.h>27 28#include <subdev/fb.h>29 30bool31nvkm_engine_chsw_load(struct nvkm_engine *engine)32{33 if (engine->func->chsw_load)34 return engine->func->chsw_load(engine);35 return false;36}37 38int39nvkm_engine_reset(struct nvkm_engine *engine)40{41 if (engine->func->reset)42 return engine->func->reset(engine);43 44 nvkm_subdev_fini(&engine->subdev, false);45 return nvkm_subdev_init(&engine->subdev);46}47 48void49nvkm_engine_unref(struct nvkm_engine **pengine)50{51 struct nvkm_engine *engine = *pengine;52 53 if (engine) {54 nvkm_subdev_unref(&engine->subdev);55 *pengine = NULL;56 }57}58 59struct nvkm_engine *60nvkm_engine_ref(struct nvkm_engine *engine)61{62 int ret;63 64 if (engine) {65 ret = nvkm_subdev_ref(&engine->subdev);66 if (ret)67 return ERR_PTR(ret);68 }69 70 return engine;71}72 73void74nvkm_engine_tile(struct nvkm_engine *engine, int region)75{76 struct nvkm_fb *fb = engine->subdev.device->fb;77 if (engine->func->tile)78 engine->func->tile(engine, region, &fb->tile.region[region]);79}80 81static void82nvkm_engine_intr(struct nvkm_subdev *subdev)83{84 struct nvkm_engine *engine = nvkm_engine(subdev);85 if (engine->func->intr)86 engine->func->intr(engine);87}88 89static int90nvkm_engine_info(struct nvkm_subdev *subdev, u64 mthd, u64 *data)91{92 struct nvkm_engine *engine = nvkm_engine(subdev);93 94 if (engine->func->info)95 return engine->func->info(engine, mthd, data);96 97 return -ENOSYS;98}99 100static int101nvkm_engine_fini(struct nvkm_subdev *subdev, bool suspend)102{103 struct nvkm_engine *engine = nvkm_engine(subdev);104 if (engine->func->fini)105 return engine->func->fini(engine, suspend);106 return 0;107}108 109static int110nvkm_engine_init(struct nvkm_subdev *subdev)111{112 struct nvkm_engine *engine = nvkm_engine(subdev);113 struct nvkm_fb *fb = subdev->device->fb;114 int ret = 0, i;115 116 if (engine->func->init)117 ret = engine->func->init(engine);118 119 for (i = 0; fb && i < fb->tile.regions; i++)120 nvkm_engine_tile(engine, i);121 return ret;122}123 124static int125nvkm_engine_oneinit(struct nvkm_subdev *subdev)126{127 struct nvkm_engine *engine = nvkm_engine(subdev);128 129 if (engine->func->oneinit)130 return engine->func->oneinit(engine);131 132 return 0;133}134 135static int136nvkm_engine_preinit(struct nvkm_subdev *subdev)137{138 struct nvkm_engine *engine = nvkm_engine(subdev);139 if (engine->func->preinit)140 engine->func->preinit(engine);141 return 0;142}143 144static void *145nvkm_engine_dtor(struct nvkm_subdev *subdev)146{147 struct nvkm_engine *engine = nvkm_engine(subdev);148 if (engine->func->dtor)149 return engine->func->dtor(engine);150 return engine;151}152 153const struct nvkm_subdev_func154nvkm_engine = {155 .dtor = nvkm_engine_dtor,156 .preinit = nvkm_engine_preinit,157 .oneinit = nvkm_engine_oneinit,158 .init = nvkm_engine_init,159 .fini = nvkm_engine_fini,160 .info = nvkm_engine_info,161 .intr = nvkm_engine_intr,162};163 164int165nvkm_engine_ctor(const struct nvkm_engine_func *func, struct nvkm_device *device,166 enum nvkm_subdev_type type, int inst, bool enable, struct nvkm_engine *engine)167{168 engine->func = func;169 nvkm_subdev_ctor(&nvkm_engine, device, type, inst, &engine->subdev);170 refcount_set(&engine->subdev.use.refcount, 0);171 172 if (!nvkm_boolopt(device->cfgopt, engine->subdev.name, enable)) {173 nvkm_debug(&engine->subdev, "disabled\n");174 return -ENODEV;175 }176 177 spin_lock_init(&engine->lock);178 return 0;179}180 181int182nvkm_engine_new_(const struct nvkm_engine_func *func, struct nvkm_device *device,183 enum nvkm_subdev_type type, int inst, bool enable,184 struct nvkm_engine **pengine)185{186 if (!(*pengine = kzalloc(sizeof(**pengine), GFP_KERNEL)))187 return -ENOMEM;188 return nvkm_engine_ctor(func, device, type, inst, enable, *pengine);189}190