LXR linux/drivers/gpu/drm/nouveau/nvkm/engine/gr/base.c

   1/*
   2 * Copyright 2015 Red Hat Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * 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 OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 *
  22 * Authors: Ben Skeggs <bskeggs@redhat.com>
  23 */
  24#include "priv.h"
  25
  26#include <engine/fifo.h>
  27
  28static bool
  29nvkm_gr_chsw_load(struct nvkm_engine *engine)
  30{
  31        struct nvkm_gr *gr = nvkm_gr(engine);
  32        if (gr->func->chsw_load)
  33                return gr->func->chsw_load(gr);
  34        return false;
  35}
  36
  37static void
  38nvkm_gr_tile(struct nvkm_engine *engine, int region, struct nvkm_fb_tile *tile)
  39{
  40        struct nvkm_gr *gr = nvkm_gr(engine);
  41        if (gr->func->tile)
  42                gr->func->tile(gr, region, tile);
  43}
  44
  45u64
  46nvkm_gr_units(struct nvkm_gr *gr)
  47{
  48        if (gr->func->units)
  49                return gr->func->units(gr);
  50        return 0;
  51}
  52
  53int
  54nvkm_gr_tlb_flush(struct nvkm_gr *gr)
  55{
  56        if (gr->func->tlb_flush)
  57                return gr->func->tlb_flush(gr);
  58        return -ENODEV;
  59}
  60
  61static int
  62nvkm_gr_oclass_get(struct nvkm_oclass *oclass, int index)
  63{
  64        struct nvkm_gr *gr = nvkm_gr(oclass->engine);
  65        int c = 0;
  66
  67        if (gr->func->object_get) {
  68                int ret = gr->func->object_get(gr, index, &oclass->base);
  69                if (oclass->base.oclass)
  70                        return index;
  71                return ret;
  72        }
  73
  74        while (gr->func->sclass[c].oclass) {
  75                if (c++ == index) {
  76                        oclass->base = gr->func->sclass[index];
  77                        return index;
  78                }
  79        }
  80
  81        return c;
  82}
  83
  84static int
  85nvkm_gr_cclass_new(struct nvkm_fifo_chan *chan,
  86                   const struct nvkm_oclass *oclass,
  87                   struct nvkm_object **pobject)
  88{
  89        struct nvkm_gr *gr = nvkm_gr(oclass->engine);
  90        if (gr->func->chan_new)
  91                return gr->func->chan_new(gr, chan, oclass, pobject);
  92        return 0;
  93}
  94
  95static void
  96nvkm_gr_intr(struct nvkm_engine *engine)
  97{
  98        struct nvkm_gr *gr = nvkm_gr(engine);
  99        gr->func->intr(gr);
 100}
 101
 102static int
 103nvkm_gr_oneinit(struct nvkm_engine *engine)
 104{
 105        struct nvkm_gr *gr = nvkm_gr(engine);
 106        if (gr->func->oneinit)
 107                return gr->func->oneinit(gr);
 108        return 0;
 109}
 110
 111static int
 112nvkm_gr_init(struct nvkm_engine *engine)
 113{
 114        struct nvkm_gr *gr = nvkm_gr(engine);
 115        return gr->func->init(gr);
 116}
 117
 118static int
 119nvkm_gr_fini(struct nvkm_engine *engine, bool suspend)
 120{
 121        struct nvkm_gr *gr = nvkm_gr(engine);
 122        if (gr->func->fini)
 123                return gr->func->fini(gr, suspend);
 124        return 0;
 125}
 126
 127static void *
 128nvkm_gr_dtor(struct nvkm_engine *engine)
 129{
 130        struct nvkm_gr *gr = nvkm_gr(engine);
 131        if (gr->func->dtor)
 132                return gr->func->dtor(gr);
 133        return gr;
 134}
 135
 136static const struct nvkm_engine_func
 137nvkm_gr = {
 138        .dtor = nvkm_gr_dtor,
 139        .oneinit = nvkm_gr_oneinit,
 140        .init = nvkm_gr_init,
 141        .fini = nvkm_gr_fini,
 142        .intr = nvkm_gr_intr,
 143        .tile = nvkm_gr_tile,
 144        .chsw_load = nvkm_gr_chsw_load,
 145        .fifo.cclass = nvkm_gr_cclass_new,
 146        .fifo.sclass = nvkm_gr_oclass_get,
 147};
 148
 149int
 150nvkm_gr_ctor(const struct nvkm_gr_func *func, struct nvkm_device *device,
 151             int index, bool enable, struct nvkm_gr *gr)
 152{
 153        gr->func = func;
 154        return nvkm_engine_ctor(&nvkm_gr, device, index, enable, &gr->engine);
 155}
 156