subdev/fb/nv25.c

0001 /*
0002  * Copyright (C) 2010 Francisco Jerez.
0003  * All Rights Reserved.
0004  *
0005  * Permission is hereby granted, free of charge, to any person obtaining
0006  * a copy of this software and associated documentation files (the
0007  * "Software"), to deal in the Software without restriction, including
0008  * without limitation the rights to use, copy, modify, merge, publish,
0009  * distribute, sublicense, and/or sell copies of the Software, and to
0010  * permit persons to whom the Software is furnished to do so, subject to
0011  * the following conditions:
0012  *
0013  * The above copyright notice and this permission notice (including the
0014  * next paragraph) shall be included in all copies or substantial
0015  * portions of the Software.
0016  *
0017  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
0018  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
0019  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
0020  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
0021  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
0022  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
0023  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
0024  *
0025  */
0026 #include "priv.h"
0027 #include "ram.h"
0028
0029 static void
0030 nv25_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags,
0031           struct nvkm_fb_tile *tile)
0032 {
0033     u32 tiles = DIV_ROUND_UP(size, 0x40);
0034     u32 tags  = round_up(tiles / fb->ram->parts, 0x40);
0035     if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) {
0036         if (!(flags & 2)) tile->zcomp = 0x00100000; /* Z16 */
0037         else              tile->zcomp = 0x00200000; /* Z24S8 */
0038         tile->zcomp |= tile->tag->offset;
0039 #ifdef __BIG_ENDIAN
0040         tile->zcomp |= 0x01000000;
0041 #endif
0042     }
0043 }
0044
0045 static const struct nvkm_fb_func
0046 nv25_fb = {
0047     .tags = nv20_fb_tags,
0048     .tile.regions = 8,
0049     .tile.init = nv20_fb_tile_init,
0050     .tile.comp = nv25_fb_tile_comp,
0051     .tile.fini = nv20_fb_tile_fini,
0052     .tile.prog = nv20_fb_tile_prog,
0053     .ram_new = nv20_ram_new,
0054 };
0055
0056 int
0057 nv25_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
0058 {
0059     return nvkm_fb_new_(&nv25_fb, device, type, inst, pfb);
0060 }