drivers/gpu/drm/nouveau/nvkm/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 #include "nv04.h"
  27
  28 void
  29 nv40_fb_tile_comp(struct nvkm_fb *pfb, int i, u32 size, u32 flags,
  30                   struct nvkm_fb_tile *tile)
  31 {
  32         u32 tiles = DIV_ROUND_UP(size, 0x80);
  33         u32 tags  = round_up(tiles / pfb->ram->parts, 0x100);
  34         if ( (flags & 2) &&
  35             !nvkm_mm_head(&pfb->tags, 0, 1, tags, tags, 1, &tile->tag)) {
  36                 tile->zcomp  = 0x28000000; /* Z24S8_SPLIT_GRAD */
  37                 tile->zcomp |= ((tile->tag->offset           ) >> 8);
  38                 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 8) << 13;
  39 #ifdef __BIG_ENDIAN
  40                 tile->zcomp |= 0x40000000;
  41 #endif
  42         }
  43 }
  44
  45 static int
  46 nv40_fb_init(struct nvkm_object *object)
  47 {
  48         struct nv04_fb_priv *priv = (void *)object;
  49         int ret;
  50
  51         ret = nvkm_fb_init(&priv->base);
  52         if (ret)
  53                 return ret;
  54
  55         nv_mask(priv, 0x10033c, 0x00008000, 0x00000000);
  56         return 0;
  57 }
  58
  59 struct nvkm_oclass *
  60 nv40_fb_oclass = &(struct nv04_fb_impl) {
  61         .base.base.handle = NV_SUBDEV(FB, 0x40),
  62         .base.base.ofuncs = &(struct nvkm_ofuncs) {
  63                 .ctor = nv04_fb_ctor,
  64                 .dtor = _nvkm_fb_dtor,
  65                 .init = nv40_fb_init,
  66                 .fini = _nvkm_fb_fini,
  67         },
  68         .base.memtype = nv04_fb_memtype_valid,
  69         .base.ram = &nv40_ram_oclass,
  70         .tile.regions = 8,
  71         .tile.init = nv30_fb_tile_init,
  72         .tile.comp = nv40_fb_tile_comp,
  73         .tile.fini = nv20_fb_tile_fini,
  74         .tile.prog = nv20_fb_tile_prog,
  75 }.base.base;