cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/engine/gr/base.c

/*
 * 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; }

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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); }

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u64 nvkm_gr_units(struct nvkm_gr *gr) { if (gr->func->units) return gr->func->units(gr); return 0; }

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int nvkm_gr_tlb_flush(struct nvkm_gr *gr) { if (gr->func->tlb_flush) return gr->func->tlb_flush(gr); return -ENODEV; }

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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; }

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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; }

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static void nvkm_gr_intr(struct nvkm_engine *engine) { struct nvkm_gr *gr = nvkm_gr(engine); gr->func->intr(gr); }

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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; }

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static int nvkm_gr_init(struct nvkm_engine *engine) { struct nvkm_gr *gr = nvkm_gr(engine); return gr->func->init(gr); }

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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; }

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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; }

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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); }

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