text: /*
   * Copyright (C) 2010 Francisco Jerez.
   * All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice (including the
   * next paragraph) shall be included in all copies or substantial
   * portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
   * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   *
   */
  #include "priv.h"
  #include "ram.h"
  
  static void
  nv44_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch,
  		  u32 flags, struct nvkm_fb_tile *tile)
  {
  	tile->addr  = 0x00000001; /* mode = vram */
  	tile->addr |= addr;
  	tile->limit = max(1u, addr + size) - 1;
  	tile->pitch = pitch;
  }
  
  void
  nv44_fb_tile_prog(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
  {
  	struct nvkm_device *device = fb->subdev.device;
  	nvkm_wr32(device, 0x100604 + (i * 0x10), tile->limit);
  	nvkm_wr32(device, 0x100608 + (i * 0x10), tile->pitch);
  	nvkm_wr32(device, 0x100600 + (i * 0x10), tile->addr);
  	nvkm_rd32(device, 0x100600 + (i * 0x10));
  }
  
  void
  nv44_fb_init(struct nvkm_fb *fb)
  {
  	struct nvkm_device *device = fb->subdev.device;
  	nvkm_wr32(device, 0x100850, 0x80000000);
  	nvkm_wr32(device, 0x100800, 0x00000001);
  }
  
  static const struct nvkm_fb_func
  nv44_fb = {
  	.init = nv44_fb_init,
  	.tile.regions = 12,
  	.tile.init = nv44_fb_tile_init,
  	.tile.fini = nv20_fb_tile_fini,
  	.tile.prog = nv44_fb_tile_prog,
  	.ram_new = nv44_ram_new,
  	.memtype_valid = nv04_fb_memtype_valid,
  };
  
  int
  nv44_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
  {
  	return nvkm_fb_new_(&nv44_fb, device, index, pfb);
  }
  