LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv46.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
  29void
  30nv46_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        /* for performance, select alternate bank offset for zeta */
  34        if (!(flags & 4)) tile->addr = (0 << 3);
  35        else              tile->addr = (1 << 3);
  36
  37        tile->addr |= 0x00000001; /* mode = vram */
  38        tile->addr |= addr;
  39        tile->limit = max(1u, addr + size) - 1;
  40        tile->pitch = pitch;
  41}
  42
  43static const struct nvkm_fb_func
  44nv46_fb = {
  45        .init = nv44_fb_init,
  46        .tile.regions = 15,
  47        .tile.init = nv46_fb_tile_init,
  48        .tile.fini = nv20_fb_tile_fini,
  49        .tile.prog = nv44_fb_tile_prog,
  50        .ram_new = nv44_ram_new,
  51};
  52
  53int
  54nv46_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
  55{
  56        return nvkm_fb_new_(&nv46_fb, device, type, inst, pfb);
  57}
  58