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
  28u32
  29nvkm_gr_ctxsw_inst(struct nvkm_device *device)
  30{
  31        struct nvkm_gr *gr = device->gr;
  32        if (gr && gr->func->ctxsw.inst)
  33                return gr->func->ctxsw.inst(gr);
  34        return 0;
  35}
  36
  37int
  38nvkm_gr_ctxsw_resume(struct nvkm_device *device)
  39{
  40        struct nvkm_gr *gr = device->gr;
  41        if (gr && gr->func->ctxsw.resume)
  42                return gr->func->ctxsw.resume(gr);
  43        return 0;
  44}
  45
  46int
  47nvkm_gr_ctxsw_pause(struct nvkm_device *device)
  48{
  49        struct nvkm_gr *gr = device->gr;
  50        if (gr && gr->func->ctxsw.pause)
  51                return gr->func->ctxsw.pause(gr);
  52        return 0;
  53}
  54
  55static bool
  56nvkm_gr_chsw_load(struct nvkm_engine *engine)
  57{
  58        struct nvkm_gr *gr = nvkm_gr(engine);
  59        if (gr->func->chsw_load)
  60                return gr->func->chsw_load(gr);
  61        return false;
  62}
  63
  64static void
  65nvkm_gr_tile(struct nvkm_engine *engine, int region, struct nvkm_fb_tile *tile)
  66{
  67        struct nvkm_gr *gr = nvkm_gr(engine);
  68        if (gr->func->tile)
  69                gr->func->tile(gr, region, tile);
  70}
  71
  72u64
  73nvkm_gr_units(struct nvkm_gr *gr)
  74{
  75        if (gr->func->units)
  76                return gr->func->units(gr);
  77        return 0;
  78}
  79
  80int
  81nvkm_gr_tlb_flush(struct nvkm_gr *gr)
  82{
  83        if (gr->func->tlb_flush)
  84                return gr->func->tlb_flush(gr);
  85        return -ENODEV;
  86}
  87
  88static int
  89nvkm_gr_oclass_get(struct nvkm_oclass *oclass, int index)
  90{
  91        struct nvkm_gr *gr = nvkm_gr(oclass->engine);
  92        int c = 0;
  93
  94        if (gr->func->object_get) {
  95                int ret = gr->func->object_get(gr, index, &oclass->base);
  96                if (oclass->base.oclass)
  97                        return index;
  98                return ret;
  99        }
 100
 101        while (gr->func->sclass[c].oclass) {
 102                if (c++ == index) {
 103                        oclass->base = gr->func->sclass[index];
 104                        return index;
 105                }
 106        }
 107
 108        return c;
 109}
 110
 111static int
 112nvkm_gr_cclass_new(struct nvkm_fifo_chan *chan,
 113                   const struct nvkm_oclass *oclass,
 114                   struct nvkm_object **pobject)
 115{
 116        struct nvkm_gr *gr = nvkm_gr(oclass->engine);
 117        if (gr->func->chan_new)
 118                return gr->func->chan_new(gr, chan, oclass, pobject);
 119        return 0;
 120}
 121
 122static void
 123nvkm_gr_intr(struct nvkm_engine *engine)
 124{
 125        struct nvkm_gr *gr = nvkm_gr(engine);
 126        gr->func->intr(gr);
 127}
 128
 129static int
 130nvkm_gr_oneinit(struct nvkm_engine *engine)
 131{
 132        struct nvkm_gr *gr = nvkm_gr(engine);
 133        if (gr->func->oneinit)
 134                return gr->func->oneinit(gr);
 135        return 0;
 136}
 137
 138static int
 139nvkm_gr_init(struct nvkm_engine *engine)
 140{
 141        struct nvkm_gr *gr = nvkm_gr(engine);
 142        return gr->func->init(gr);
 143}
 144
 145static int
 146nvkm_gr_fini(struct nvkm_engine *engine, bool suspend)
 147{
 148        struct nvkm_gr *gr = nvkm_gr(engine);
 149        if (gr->func->fini)
 150                return gr->func->fini(gr, suspend);
 151        return 0;
 152}
 153
 154static void *
 155nvkm_gr_dtor(struct nvkm_engine *engine)
 156{
 157        struct nvkm_gr *gr = nvkm_gr(engine);
 158        if (gr->func->dtor)
 159                return gr->func->dtor(gr);
 160        return gr;
 161}
 162
 163static const struct nvkm_engine_func
 164nvkm_gr = {
 165        .dtor = nvkm_gr_dtor,
 166        .oneinit = nvkm_gr_oneinit,
 167        .init = nvkm_gr_init,
 168        .fini = nvkm_gr_fini,
 169        .intr = nvkm_gr_intr,
 170        .tile = nvkm_gr_tile,
 171        .chsw_load = nvkm_gr_chsw_load,
 172        .fifo.cclass = nvkm_gr_cclass_new,
 173        .fifo.sclass = nvkm_gr_oclass_get,
 174};
 175
 176int
 177nvkm_gr_ctor(const struct nvkm_gr_func *func, struct nvkm_device *device,
 178             enum nvkm_subdev_type type, int inst, bool enable, struct nvkm_gr *gr)
 179{
 180        gr->func = func;
 181        return nvkm_engine_ctor(&nvkm_gr, device, type, inst, enable, &gr->engine);
 182}
 183