LXR linux/drivers/gpu/drm/nouveau/core/subdev/fb/nv44.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 <subdev/fb.h>
  28
  29struct nv44_fb_priv {
  30        struct nouveau_fb base;
  31};
  32
  33int
  34nv44_fb_vram_init(struct nouveau_fb *pfb)
  35{
  36        u32 pfb474 = nv_rd32(pfb, 0x100474);
  37        if (pfb474 & 0x00000004)
  38                pfb->ram.type = NV_MEM_TYPE_GDDR3;
  39        if (pfb474 & 0x00000002)
  40                pfb->ram.type = NV_MEM_TYPE_DDR2;
  41        if (pfb474 & 0x00000001)
  42                pfb->ram.type = NV_MEM_TYPE_DDR1;
  43
  44        pfb->ram.size = nv_rd32(pfb, 0x10020c) & 0xff000000;
  45        return 0;
  46}
  47
  48static void
  49nv44_fb_tile_init(struct nouveau_fb *pfb, int i, u32 addr, u32 size, u32 pitch,
  50                  u32 flags, struct nouveau_fb_tile *tile)
  51{
  52        tile->addr  = 0x00000001; /* mode = vram */
  53        tile->addr |= addr;
  54        tile->limit = max(1u, addr + size) - 1;
  55        tile->pitch = pitch;
  56}
  57
  58void
  59nv44_fb_tile_prog(struct nouveau_fb *pfb, int i, struct nouveau_fb_tile *tile)
  60{
  61        nv_wr32(pfb, 0x100604 + (i * 0x10), tile->limit);
  62        nv_wr32(pfb, 0x100608 + (i * 0x10), tile->pitch);
  63        nv_wr32(pfb, 0x100600 + (i * 0x10), tile->addr);
  64        nv_rd32(pfb, 0x100600 + (i * 0x10));
  65}
  66
  67int
  68nv44_fb_init(struct nouveau_object *object)
  69{
  70        struct nv44_fb_priv *priv = (void *)object;
  71        int ret;
  72
  73        ret = nouveau_fb_init(&priv->base);
  74        if (ret)
  75                return ret;
  76
  77        nv_wr32(priv, 0x100850, 0x80000000);
  78        nv_wr32(priv, 0x100800, 0x00000001);
  79        return 0;
  80}
  81
  82static int
  83nv44_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
  84             struct nouveau_oclass *oclass, void *data, u32 size,
  85             struct nouveau_object **pobject)
  86{
  87        struct nv44_fb_priv *priv;
  88        int ret;
  89
  90        ret = nouveau_fb_create(parent, engine, oclass, &priv);
  91        *pobject = nv_object(priv);
  92        if (ret)
  93                return ret;
  94
  95        priv->base.memtype_valid = nv04_fb_memtype_valid;
  96        priv->base.ram.init = nv44_fb_vram_init;
  97        priv->base.tile.regions = 12;
  98        priv->base.tile.init = nv44_fb_tile_init;
  99        priv->base.tile.fini = nv20_fb_tile_fini;
 100        priv->base.tile.prog = nv44_fb_tile_prog;
 101        return nouveau_fb_preinit(&priv->base);
 102}
 103
 104
 105struct nouveau_oclass
 106nv44_fb_oclass = {
 107        .handle = NV_SUBDEV(FB, 0x44),
 108        .ofuncs = &(struct nouveau_ofuncs) {
 109                .ctor = nv44_fb_ctor,
 110                .dtor = _nouveau_fb_dtor,
 111                .init = nv44_fb_init,
 112                .fini = _nouveau_fb_fini,
 113        },
 114};
 115