LXR linux/drivers/gpu/drm/nouveau/core/subdev/fb/nv36.c

   1/*
   2 * Copyright (C) 2010 Francisco Jerez.
   3 * All Rights Reserved.
   4 *
   5 * Permission is hereby granted, free of charge, to any person obtaining
   6 * a copy of this software and associated documentation files (the
   7 * "Software"), to deal in the Software without restriction, including
   8 * without limitation the rights to use, copy, modify, merge, publish,
   9 * distribute, sublicense, and/or sell copies of the Software, and to
  10 * permit persons to whom the Software is furnished to do so, subject to
  11 * the following conditions:
  12 *
  13 * The above copyright notice and this permission notice (including the
  14 * next paragraph) shall be included in all copies or substantial
  15 * portions of the Software.
  16 *
  17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24 *
  25 */
  26
  27#include "priv.h"
  28
  29struct nv36_fb_priv {
  30        struct nouveau_fb base;
  31};
  32
  33static void
  34nv36_fb_tile_comp(struct nouveau_fb *pfb, int i, u32 size, u32 flags,
  35                  struct nouveau_fb_tile *tile)
  36{
  37        u32 tiles = DIV_ROUND_UP(size, 0x40);
  38        u32 tags  = round_up(tiles / pfb->ram->parts, 0x40);
  39        if (!nouveau_mm_head(&pfb->tags, 1, tags, tags, 1, &tile->tag)) {
  40                if (flags & 2) tile->zcomp |= 0x10000000; /* Z16 */
  41                else           tile->zcomp |= 0x20000000; /* Z24S8 */
  42                tile->zcomp |= ((tile->tag->offset           ) >> 6);
  43                tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 14;
  44#ifdef __BIG_ENDIAN
  45                tile->zcomp |= 0x80000000;
  46#endif
  47        }
  48}
  49
  50static int
  51nv36_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
  52             struct nouveau_oclass *oclass, void *data, u32 size,
  53             struct nouveau_object **pobject)
  54{
  55        struct nv36_fb_priv *priv;
  56        int ret;
  57
  58        ret = nouveau_fb_create(parent, engine, oclass, &nv20_ram_oclass, &priv);
  59        *pobject = nv_object(priv);
  60        if (ret)
  61                return ret;
  62
  63        priv->base.memtype_valid = nv04_fb_memtype_valid;
  64        priv->base.tile.regions = 8;
  65        priv->base.tile.init = nv30_fb_tile_init;
  66        priv->base.tile.comp = nv36_fb_tile_comp;
  67        priv->base.tile.fini = nv20_fb_tile_fini;
  68        priv->base.tile.prog = nv20_fb_tile_prog;
  69        return 0;
  70}
  71
  72struct nouveau_oclass
  73nv36_fb_oclass = {
  74        .handle = NV_SUBDEV(FB, 0x36),
  75        .ofuncs = &(struct nouveau_ofuncs) {
  76                .ctor = nv36_fb_ctor,
  77                .dtor = _nouveau_fb_dtor,
  78                .init = nv30_fb_init,
  79                .fini = _nouveau_fb_fini,
  80        },
  81};
  82