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 void
  29nvkm_gr_tile(struct nvkm_engine *engine, int region, struct nvkm_fb_tile *tile)
  30{
  31        struct nvkm_gr *gr = nvkm_gr(engine);
  32        if (gr->func->tile)
  33                gr->func->tile(gr, region, tile);
  34}
  35
  36u64
  37nvkm_gr_units(struct nvkm_gr *gr)
  38{
  39        if (gr->func->units)
  40                return gr->func->units(gr);
  41        return 0;
  42}
  43
  44int
  45nvkm_gr_tlb_flush(struct nvkm_gr *gr)
  46{
  47        if (gr->func->tlb_flush)
  48                return gr->func->tlb_flush(gr);
  49        return -ENODEV;
  50}
  51
  52static int
  53nvkm_gr_oclass_get(struct nvkm_oclass *oclass, int index)
  54{
  55        struct nvkm_gr *gr = nvkm_gr(oclass->engine);
  56        int c = 0;
  57
  58        if (gr->func->object_get) {
  59                int ret = gr->func->object_get(gr, index, &oclass->base);
  60                if (oclass->base.oclass)
  61                        return index;
  62                return ret;
  63        }
  64
  65        while (gr->func->sclass[c].oclass) {
  66                if (c++ == index) {
  67                        oclass->base = gr->func->sclass[index];
  68                        return index;
  69                }
  70        }
  71
  72        return c;
  73}
  74
  75static int
  76nvkm_gr_cclass_new(struct nvkm_fifo_chan *chan,
  77                   const struct nvkm_oclass *oclass,
  78                   struct nvkm_object **pobject)
  79{
  80        struct nvkm_gr *gr = nvkm_gr(oclass->engine);
  81        if (gr->func->chan_new)
  82                return gr->func->chan_new(gr, chan, oclass, pobject);
  83        return 0;
  84}
  85
  86static void
  87nvkm_gr_intr(struct nvkm_engine *engine)
  88{
  89        struct nvkm_gr *gr = nvkm_gr(engine);
  90        gr->func->intr(gr);
  91}
  92
  93static int
  94nvkm_gr_oneinit(struct nvkm_engine *engine)
  95{
  96        struct nvkm_gr *gr = nvkm_gr(engine);
  97        if (gr->func->oneinit)
  98                return gr->func->oneinit(gr);
  99        return 0;
 100}
 101
 102static int
 103nvkm_gr_init(struct nvkm_engine *engine)
 104{
 105        struct nvkm_gr *gr = nvkm_gr(engine);
 106        return gr->func->init(gr);
 107}
 108
 109static void *
 110nvkm_gr_dtor(struct nvkm_engine *engine)
 111{
 112        struct nvkm_gr *gr = nvkm_gr(engine);
 113        if (gr->func->dtor)
 114                return gr->func->dtor(gr);
 115        return gr;
 116}
 117
 118static const struct nvkm_engine_func
 119nvkm_gr = {
 120        .dtor = nvkm_gr_dtor,
 121        .oneinit = nvkm_gr_oneinit,
 122        .init = nvkm_gr_init,
 123        .intr = nvkm_gr_intr,
 124        .tile = nvkm_gr_tile,
 125        .fifo.cclass = nvkm_gr_cclass_new,
 126        .fifo.sclass = nvkm_gr_oclass_get,
 127};
 128
 129int
 130nvkm_gr_ctor(const struct nvkm_gr_func *func, struct nvkm_device *device,
 131             int index, u32 pmc_enable, bool enable, struct nvkm_gr *gr)
 132{
 133        gr->func = func;
 134        return nvkm_engine_ctor(&nvkm_gr, device, index, pmc_enable,
 135                                enable, &gr->engine);
 136}
 137