drivers/gpu/drm/nouveau/nvkm/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 #include "priv.h"
  27 #include "ram.h"
  28
  29 static void
  30 nv36_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, 0, 1, tags, tags, 1, &tile->tag)) {
  36                 if (flags & 2) tile->zcomp |= 0x10000000; /* Z16 */
  37                 else           tile->zcomp |= 0x20000000; /* Z24S8 */
  38                 tile->zcomp |= ((tile->tag->offset           ) >> 6);
  39                 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 14;
  40 #ifdef __BIG_ENDIAN
  41                 tile->zcomp |= 0x80000000;
  42 #endif
  43         }
  44 }
  45
  46 static const struct nvkm_fb_func
  47 nv36_fb = {
  48         .tags = nv20_fb_tags,
  49         .init = nv30_fb_init,
  50         .tile.regions = 8,
  51         .tile.init = nv30_fb_tile_init,
  52         .tile.comp = nv36_fb_tile_comp,
  53         .tile.fini = nv20_fb_tile_fini,
  54         .tile.prog = nv20_fb_tile_prog,
  55         .ram_new = nv20_ram_new,
  56 };
  57
  58 int
  59 nv36_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
  60 {
  61         return nvkm_fb_new_(&nv36_fb, device, index, pfb);
  62 }