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
  29 static void
  30 nv44_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
  39 void
  40 nv44_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
  49 void
  50 nv44_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
  57 static const struct nvkm_fb_func
  58 nv44_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
  67 int
  68 nv44_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
  69 {
  70         return nvkm_fb_new_(&nv44_fb, device, index, pfb);
  71 }