nv25.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
29static void
30nv25_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags,
31		  struct nvkm_fb_tile *tile)
32{
33	u32 tiles = DIV_ROUND_UP(size, 0x40);
34	u32 tags  = round_up(tiles / fb->ram->parts, 0x40);
35	if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) {
36		if (!(flags & 2)) tile->zcomp = 0x00100000; /* Z16 */
37		else              tile->zcomp = 0x00200000; /* Z24S8 */
38		tile->zcomp |= tile->tag->offset;
39#ifdef __BIG_ENDIAN
40		tile->zcomp |= 0x01000000;
41#endif
42	}
43}
44
45static const struct nvkm_fb_func
46nv25_fb = {
47	.tags = nv20_fb_tags,
48	.tile.regions = 8,
49	.tile.init = nv20_fb_tile_init,
50	.tile.comp = nv25_fb_tile_comp,
51	.tile.fini = nv20_fb_tile_fini,
52	.tile.prog = nv20_fb_tile_prog,
53	.ram_new = nv20_ram_new,
54};
55
56int
57nv25_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
58{
59	return nvkm_fb_new_(&nv25_fb, device, type, inst, pfb);
60}