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 "nv04.h"
27 
28 static void
29 nv25_fb_tile_comp(struct nvkm_fb *pfb, int i, u32 size, u32 flags,
30 		  struct nvkm_fb_tile *tile)
31 {
32 	u32 tiles = DIV_ROUND_UP(size, 0x40);
33 	u32 tags  = round_up(tiles / pfb->ram->parts, 0x40);
34 	if (!nvkm_mm_head(&pfb->tags, 0, 1, tags, tags, 1, &tile->tag)) {
35 		if (!(flags & 2)) tile->zcomp = 0x00100000; /* Z16 */
36 		else              tile->zcomp = 0x00200000; /* Z24S8 */
37 		tile->zcomp |= tile->tag->offset;
38 #ifdef __BIG_ENDIAN
39 		tile->zcomp |= 0x01000000;
40 #endif
41 	}
42 }
43 
44 struct nvkm_oclass *
45 nv25_fb_oclass = &(struct nv04_fb_impl) {
46 	.base.base.handle = NV_SUBDEV(FB, 0x25),
47 	.base.base.ofuncs = &(struct nvkm_ofuncs) {
48 		.ctor = nv04_fb_ctor,
49 		.dtor = _nvkm_fb_dtor,
50 		.init = _nvkm_fb_init,
51 		.fini = _nvkm_fb_fini,
52 	},
53 	.base.memtype = nv04_fb_memtype_valid,
54 	.base.ram = &nv20_ram_oclass,
55 	.tile.regions = 8,
56 	.tile.init = nv20_fb_tile_init,
57 	.tile.comp = nv25_fb_tile_comp,
58 	.tile.fini = nv20_fb_tile_fini,
59 	.tile.prog = nv20_fb_tile_prog,
60 }.base.base;
61