text: /*
   * Copyright 2015 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 <bskeggs@redhat.com>
   */
  #include "priv.h"
  
  #include <engine/fifo.h>
  
  static bool
  nvkm_gr_chsw_load(struct nvkm_engine *engine)
  {
  	struct nvkm_gr *gr = nvkm_gr(engine);
  	if (gr->func->chsw_load)
  		return gr->func->chsw_load(gr);
  	return false;
  }
  
  static void
  nvkm_gr_tile(struct nvkm_engine *engine, int region, struct nvkm_fb_tile *tile)
  {
  	struct nvkm_gr *gr = nvkm_gr(engine);
  	if (gr->func->tile)
  		gr->func->tile(gr, region, tile);
  }
  
  u64
  nvkm_gr_units(struct nvkm_gr *gr)
  {
  	if (gr->func->units)
  		return gr->func->units(gr);
  	return 0;
  }
  
  int
  nvkm_gr_tlb_flush(struct nvkm_gr *gr)
  {
  	if (gr->func->tlb_flush)
  		return gr->func->tlb_flush(gr);
  	return -ENODEV;
  }
  
  static int
  nvkm_gr_oclass_get(struct nvkm_oclass *oclass, int index)
  {
  	struct nvkm_gr *gr = nvkm_gr(oclass->engine);
  	int c = 0;
  
  	if (gr->func->object_get) {
  		int ret = gr->func->object_get(gr, index, &oclass->base);
  		if (oclass->base.oclass)
  			return index;
  		return ret;
  	}
  
  	while (gr->func->sclass[c].oclass) {
  		if (c++ == index) {
  			oclass->base = gr->func->sclass[index];
  			return index;
  		}
  	}
  
  	return c;
  }
  
  static int
  nvkm_gr_cclass_new(struct nvkm_fifo_chan *chan,
  		   const struct nvkm_oclass *oclass,
  		   struct nvkm_object **pobject)
  {
  	struct nvkm_gr *gr = nvkm_gr(oclass->engine);
  	if (gr->func->chan_new)
  		return gr->func->chan_new(gr, chan, oclass, pobject);
  	return 0;
  }
  
  static void
  nvkm_gr_intr(struct nvkm_engine *engine)
  {
  	struct nvkm_gr *gr = nvkm_gr(engine);
  	gr->func->intr(gr);
  }
  
  static int
  nvkm_gr_oneinit(struct nvkm_engine *engine)
  {
  	struct nvkm_gr *gr = nvkm_gr(engine);
  	if (gr->func->oneinit)
  		return gr->func->oneinit(gr);
  	return 0;
  }
  
  static int
  nvkm_gr_init(struct nvkm_engine *engine)
  {
  	struct nvkm_gr *gr = nvkm_gr(engine);
  	return gr->func->init(gr);
  }
  
  static int
  nvkm_gr_fini(struct nvkm_engine *engine, bool suspend)
  {
  	struct nvkm_gr *gr = nvkm_gr(engine);
  	if (gr->func->fini)
  		return gr->func->fini(gr, suspend);
  	return 0;
  }
  
  static void *
  nvkm_gr_dtor(struct nvkm_engine *engine)
  {
  	struct nvkm_gr *gr = nvkm_gr(engine);
  	if (gr->func->dtor)
  		return gr->func->dtor(gr);
  	return gr;
  }
  
  static const struct nvkm_engine_func
  nvkm_gr = {
  	.dtor = nvkm_gr_dtor,
  	.oneinit = nvkm_gr_oneinit,
  	.init = nvkm_gr_init,
  	.fini = nvkm_gr_fini,
  	.intr = nvkm_gr_intr,
  	.tile = nvkm_gr_tile,
  	.chsw_load = nvkm_gr_chsw_load,
  	.fifo.cclass = nvkm_gr_cclass_new,
  	.fifo.sclass = nvkm_gr_oclass_get,
  };
  
  int
  nvkm_gr_ctor(const struct nvkm_gr_func *func, struct nvkm_device *device,
  	     int index, bool enable, struct nvkm_gr *gr)
  {
  	gr->func = func;
  	return nvkm_engine_ctor(&nvkm_gr, device, index, enable, &gr->engine);
  }
  