drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv20.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 void
  30 nv20_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 | addr;
  34         tile->limit = max(1u, addr + size) - 1;
  35         tile->pitch = pitch;
  36         if (flags & 4) {
  37                 fb->func->tile.comp(fb, i, size, flags, tile);
  38                 tile->addr |= 2;
  39         }
  40 }
  41
  42 static void
  43 nv20_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags,
  44                   struct nvkm_fb_tile *tile)
  45 {
  46         u32 tiles = DIV_ROUND_UP(size, 0x40);
  47         u32 tags  = round_up(tiles / fb->ram->parts, 0x40);
  48         if (!nvkm_mm_head(&fb->tags, 0, 1, tags, tags, 1, &tile->tag)) {
  49                 if (!(flags & 2)) tile->zcomp = 0x00000000; /* Z16 */
  50                 else              tile->zcomp = 0x04000000; /* Z24S8 */
  51                 tile->zcomp |= tile->tag->offset;
  52                 tile->zcomp |= 0x80000000; /* enable */
  53 #ifdef __BIG_ENDIAN
  54                 tile->zcomp |= 0x08000000;
  55 #endif
  56         }
  57 }
  58
  59 void
  60 nv20_fb_tile_fini(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
  61 {
  62         tile->addr  = 0;
  63         tile->limit = 0;
  64         tile->pitch = 0;
  65         tile->zcomp = 0;
  66         nvkm_mm_free(&fb->tags, &tile->tag);
  67 }
  68
  69 void
  70 nv20_fb_tile_prog(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
  71 {
  72         struct nvkm_device *device = fb->subdev.device;
  73         nvkm_wr32(device, 0x100244 + (i * 0x10), tile->limit);
  74         nvkm_wr32(device, 0x100248 + (i * 0x10), tile->pitch);
  75         nvkm_wr32(device, 0x100240 + (i * 0x10), tile->addr);
  76         nvkm_rd32(device, 0x100240 + (i * 0x10));
  77         nvkm_wr32(device, 0x100300 + (i * 0x04), tile->zcomp);
  78 }
  79
  80 u32
  81 nv20_fb_tags(struct nvkm_fb *fb)
  82 {
  83         const u32 tags = nvkm_rd32(fb->subdev.device, 0x100320);
  84         return tags ? tags + 1 : 0;
  85 }
  86
  87 static const struct nvkm_fb_func
  88 nv20_fb = {
  89         .tags = nv20_fb_tags,
  90         .tile.regions = 8,
  91         .tile.init = nv20_fb_tile_init,
  92         .tile.comp = nv20_fb_tile_comp,
  93         .tile.fini = nv20_fb_tile_fini,
  94         .tile.prog = nv20_fb_tile_prog,
  95         .ram_new = nv20_ram_new,
  96 };
  97
  98 int
  99 nv20_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
 100 {
 101         return nvkm_fb_new_(&nv20_fb, device, index, pfb);
 102 }