LXR linux/drivers/gpu/drm/nouveau/core/subdev/fb/nv40.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 "nv04.h"
  28
  29void
  30nv40_fb_tile_comp(struct nouveau_fb *pfb, int i, u32 size, u32 flags,
  31                  struct nouveau_fb_tile *tile)
  32{
  33        u32 tiles = DIV_ROUND_UP(size, 0x80);
  34        u32 tags  = round_up(tiles / pfb->ram->parts, 0x100);
  35        if ( (flags & 2) &&
  36            !nouveau_mm_head(&pfb->tags, 0, 1, tags, tags, 1, &tile->tag)) {
  37                tile->zcomp  = 0x28000000; /* Z24S8_SPLIT_GRAD */
  38                tile->zcomp |= ((tile->tag->offset           ) >> 8);
  39                tile->zcomp |= ((tile->tag->offset + tags - 1) >> 8) << 13;
  40#ifdef __BIG_ENDIAN
  41                tile->zcomp |= 0x40000000;
  42#endif
  43        }
  44}
  45
  46static int
  47nv40_fb_init(struct nouveau_object *object)
  48{
  49        struct nv04_fb_priv *priv = (void *)object;
  50        int ret;
  51
  52        ret = nouveau_fb_init(&priv->base);
  53        if (ret)
  54                return ret;
  55
  56        nv_mask(priv, 0x10033c, 0x00008000, 0x00000000);
  57        return 0;
  58}
  59
  60struct nouveau_oclass *
  61nv40_fb_oclass = &(struct nv04_fb_impl) {
  62        .base.base.handle = NV_SUBDEV(FB, 0x40),
  63        .base.base.ofuncs = &(struct nouveau_ofuncs) {
  64                .ctor = nv04_fb_ctor,
  65                .dtor = _nouveau_fb_dtor,
  66                .init = nv40_fb_init,
  67                .fini = _nouveau_fb_fini,
  68        },
  69        .base.memtype = nv04_fb_memtype_valid,
  70        .base.ram = &nv40_ram_oclass,
  71        .tile.regions = 8,
  72        .tile.init = nv30_fb_tile_init,
  73        .tile.comp = nv40_fb_tile_comp,
  74        .tile.fini = nv20_fb_tile_fini,
  75        .tile.prog = nv20_fb_tile_prog,
  76}.base.base;
  77