LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv25.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#include "priv.h"
  27#include "ram.h"
  28
  29static void
  30nv25_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags,
  31                  struct nvkm_fb_tile *tile)
  32{
  33        u32 tiles = DIV_ROUND_UP(size, 0x40);
  34        u32 tags  = round_up(tiles / fb->ram->parts, 0x40);
  35        if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) {
  36                if (!(flags & 2)) tile->zcomp = 0x00100000; /* Z16 */
  37                else              tile->zcomp = 0x00200000; /* Z24S8 */
  38                tile->zcomp |= tile->tag->offset;
  39#ifdef __BIG_ENDIAN
  40                tile->zcomp |= 0x01000000;
  41#endif
  42        }
  43}
  44
  45static const struct nvkm_fb_func
  46nv25_fb = {
  47        .tags = nv20_fb_tags,
  48        .tile.regions = 8,
  49        .tile.init = nv20_fb_tile_init,
  50        .tile.comp = nv25_fb_tile_comp,
  51        .tile.fini = nv20_fb_tile_fini,
  52        .tile.prog = nv20_fb_tile_prog,
  53        .ram_new = nv20_ram_new,
  54};
  55
  56int
  57nv25_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
  58{
  59        return nvkm_fb_new_(&nv25_fb, device, type, inst, pfb);
  60}
  61