LXR linux/drivers/gpu/drm/nouveau/nvkm/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#include "priv.h"
  27#include "ram.h"
  28
  29static void
  30nv44_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch,
  31                  u32 flags, struct nvkm_fb_tile *tile)
  32{
  33        tile->addr  = 0x00000001; /* mode = vram */
  34        tile->addr |= addr;
  35        tile->limit = max(1u, addr + size) - 1;
  36        tile->pitch = pitch;
  37}
  38
  39void
  40nv44_fb_tile_prog(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
  41{
  42        struct nvkm_device *device = fb->subdev.device;
  43        nvkm_wr32(device, 0x100604 + (i * 0x10), tile->limit);
  44        nvkm_wr32(device, 0x100608 + (i * 0x10), tile->pitch);
  45        nvkm_wr32(device, 0x100600 + (i * 0x10), tile->addr);
  46        nvkm_rd32(device, 0x100600 + (i * 0x10));
  47}
  48
  49void
  50nv44_fb_init(struct nvkm_fb *fb)
  51{
  52        struct nvkm_device *device = fb->subdev.device;
  53        nvkm_wr32(device, 0x100850, 0x80000000);
  54        nvkm_wr32(device, 0x100800, 0x00000001);
  55}
  56
  57static const struct nvkm_fb_func
  58nv44_fb = {
  59        .init = nv44_fb_init,
  60        .tile.regions = 12,
  61        .tile.init = nv44_fb_tile_init,
  62        .tile.fini = nv20_fb_tile_fini,
  63        .tile.prog = nv44_fb_tile_prog,
  64        .ram_new = nv44_ram_new,
  65};
  66
  67int
  68nv44_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
  69{
  70        return nvkm_fb_new_(&nv44_fb, device, type, inst, pfb);
  71}
  72