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 nv25_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->ram->tags, 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 
45 static const struct nvkm_fb_func
46 nv25_fb = {
47 	.tile.regions = 8,
48 	.tile.init = nv20_fb_tile_init,
49 	.tile.comp = nv25_fb_tile_comp,
50 	.tile.fini = nv20_fb_tile_fini,
51 	.tile.prog = nv20_fb_tile_prog,
52 	.ram_new = nv20_ram_new,
53 	.memtype_valid = nv04_fb_memtype_valid,
54 };
55 
56 int
57 nv25_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
58 {
59 	return nvkm_fb_new_(&nv25_fb, device, index, pfb);
60 }
61