drivers/gpu/drm/nouveau/core/subdev/fb/ramnvaa.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
  25 #include "nv50.h"
  26
  27 static int
  28 nvaa_ram_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
  29               struct nouveau_oclass *oclass, void *data, u32 datasize,
  30               struct nouveau_object **pobject)
  31 {
  32         const u32 rsvd_head = ( 256 * 1024) >> 12; /* vga memory */
  33         const u32 rsvd_tail = (1024 * 1024) >> 12; /* vbios etc */
  34         struct nouveau_fb *pfb = nouveau_fb(parent);
  35         struct nouveau_ram *ram;
  36         int ret;
  37
  38         ret = nouveau_ram_create(parent, engine, oclass, &ram);
  39         *pobject = nv_object(ram);
  40         if (ret)
  41                 return ret;
  42
  43         ram->size = nv_rd32(pfb, 0x10020c);
  44         ram->size = (ram->size & 0xffffff00) | ((ram->size & 0x000000ff) << 32);
  45
  46         ret = nouveau_mm_init(&pfb->vram, rsvd_head, (ram->size >> 12) -
  47                               (rsvd_head + rsvd_tail), 1);
  48         if (ret)
  49                 return ret;
  50
  51         ram->type   = NV_MEM_TYPE_STOLEN;
  52         ram->stolen = (u64)nv_rd32(pfb, 0x100e10) << 12;
  53         ram->get = nv50_ram_get;
  54         ram->put = nv50_ram_put;
  55         return 0;
  56 }
  57
  58 struct nouveau_oclass
  59 nvaa_ram_oclass = {
  60         .ofuncs = &(struct nouveau_ofuncs) {
  61                 .ctor = nvaa_ram_ctor,
  62                 .dtor = _nouveau_ram_dtor,
  63                 .init = _nouveau_ram_init,
  64                 .fini = _nouveau_ram_fini,
  65         },
  66 };