LXR linux/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
  29void
  30nv20_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
  42static void
  43nv20_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
  59void
  60nv20_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
  69void
  70nv20_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
  80u32
  81nv20_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
  87static const struct nvkm_fb_func
  88nv20_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
  98int
  99nv20_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
 100{
 101        return nvkm_fb_new_(&nv20_fb, device, index, pfb);
 102}
 103