drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv44.c

   1 /*
   2  * Copyright 2013 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24 #include "nv40.h"
  25
  26 static int
  27 nv44_ram_create(struct nvkm_object *parent, struct nvkm_object *engine,
  28                 struct nvkm_oclass *oclass, void *data, u32 size,
  29                 struct nvkm_object **pobject)
  30 {
  31         struct nvkm_fb *pfb = nvkm_fb(parent);
  32         struct nv40_ram *ram;
  33         u32 pfb474 = nv_rd32(pfb, 0x100474);
  34         int ret;
  35
  36         ret = nvkm_ram_create(parent, engine, oclass, &ram);
  37         *pobject = nv_object(ram);
  38         if (ret)
  39                 return ret;
  40
  41         if (pfb474 & 0x00000004)
  42                 ram->base.type = NV_MEM_TYPE_GDDR3;
  43         if (pfb474 & 0x00000002)
  44                 ram->base.type = NV_MEM_TYPE_DDR2;
  45         if (pfb474 & 0x00000001)
  46                 ram->base.type = NV_MEM_TYPE_DDR1;
  47
  48         ram->base.size = nv_rd32(pfb, 0x10020c) & 0xff000000;
  49         ram->base.calc = nv40_ram_calc;
  50         ram->base.prog = nv40_ram_prog;
  51         ram->base.tidy = nv40_ram_tidy;
  52         return 0;
  53 }
  54
  55 struct nvkm_oclass
  56 nv44_ram_oclass = {
  57         .handle = 0,
  58         .ofuncs = &(struct nvkm_ofuncs) {
  59                 .ctor = nv44_ram_create,
  60                 .dtor = _nvkm_ram_dtor,
  61                 .init = _nvkm_ram_init,
  62                 .fini = _nvkm_ram_fini,
  63         }
  64 };