LXR linux/drivers/gpu/drm/nouveau/core/subdev/fb/nv20.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 nv20_fb_priv {
  30        struct nouveau_fb base;
  31};
  32
  33void
  34nv20_fb_tile_init(struct nouveau_fb *pfb, int i, u32 addr, u32 size, u32 pitch,
  35                  u32 flags, struct nouveau_fb_tile *tile)
  36{
  37        tile->addr  = 0x00000001 | addr;
  38        tile->limit = max(1u, addr + size) - 1;
  39        tile->pitch = pitch;
  40        if (flags & 4) {
  41                pfb->tile.comp(pfb, i, size, flags, tile);
  42                tile->addr |= 2;
  43        }
  44}
  45
  46static void
  47nv20_fb_tile_comp(struct nouveau_fb *pfb, int i, u32 size, u32 flags,
  48                  struct nouveau_fb_tile *tile)
  49{
  50        u32 tiles = DIV_ROUND_UP(size, 0x40);
  51        u32 tags  = round_up(tiles / pfb->ram->parts, 0x40);
  52        if (!nouveau_mm_head(&pfb->tags, 1, tags, tags, 1, &tile->tag)) {
  53                if (!(flags & 2)) tile->zcomp = 0x00000000; /* Z16 */
  54                else              tile->zcomp = 0x04000000; /* Z24S8 */
  55                tile->zcomp |= tile->tag->offset;
  56                tile->zcomp |= 0x80000000; /* enable */
  57#ifdef __BIG_ENDIAN
  58                tile->zcomp |= 0x08000000;
  59#endif
  60        }
  61}
  62
  63void
  64nv20_fb_tile_fini(struct nouveau_fb *pfb, int i, struct nouveau_fb_tile *tile)
  65{
  66        tile->addr  = 0;
  67        tile->limit = 0;
  68        tile->pitch = 0;
  69        tile->zcomp = 0;
  70        nouveau_mm_free(&pfb->tags, &tile->tag);
  71}
  72
  73void
  74nv20_fb_tile_prog(struct nouveau_fb *pfb, int i, struct nouveau_fb_tile *tile)
  75{
  76        nv_wr32(pfb, 0x100244 + (i * 0x10), tile->limit);
  77        nv_wr32(pfb, 0x100248 + (i * 0x10), tile->pitch);
  78        nv_wr32(pfb, 0x100240 + (i * 0x10), tile->addr);
  79        nv_rd32(pfb, 0x100240 + (i * 0x10));
  80        nv_wr32(pfb, 0x100300 + (i * 0x04), tile->zcomp);
  81}
  82
  83static int
  84nv20_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
  85             struct nouveau_oclass *oclass, void *data, u32 size,
  86             struct nouveau_object **pobject)
  87{
  88        struct nv20_fb_priv *priv;
  89        int ret;
  90
  91        ret = nouveau_fb_create(parent, engine, oclass, &nv20_ram_oclass, &priv);
  92        *pobject = nv_object(priv);
  93        if (ret)
  94                return ret;
  95
  96        priv->base.memtype_valid = nv04_fb_memtype_valid;
  97        priv->base.tile.regions = 8;
  98        priv->base.tile.init = nv20_fb_tile_init;
  99        priv->base.tile.comp = nv20_fb_tile_comp;
 100        priv->base.tile.fini = nv20_fb_tile_fini;
 101        priv->base.tile.prog = nv20_fb_tile_prog;
 102        return 0;
 103}
 104
 105struct nouveau_oclass
 106nv20_fb_oclass = {
 107        .handle = NV_SUBDEV(FB, 0x20),
 108        .ofuncs = &(struct nouveau_ofuncs) {
 109                .ctor = nv20_fb_ctor,
 110                .dtor = _nouveau_fb_dtor,
 111                .init = _nouveau_fb_init,
 112                .fini = _nouveau_fb_fini,
 113        },
 114};
 115