1/*	$NetBSD: nouveau_nvkm_subdev_fb_nv20.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $	*/
2
3/*
4 * Copyright (C) 2010 Francisco Jerez.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining
8 * a copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sublicense, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial
17 * portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
23 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 */
28#include <sys/cdefs.h>
29__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fb_nv20.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $");
30
31#include "priv.h"
32#include "ram.h"
33
34void
35nv20_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch,
36		  u32 flags, struct nvkm_fb_tile *tile)
37{
38	tile->addr  = 0x00000001 | addr;
39	tile->limit = max(1u, addr + size) - 1;
40	tile->pitch = pitch;
41	if (flags & 4) {
42		fb->func->tile.comp(fb, i, size, flags, tile);
43		tile->addr |= 2;
44	}
45}
46
47static void
48nv20_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags,
49		  struct nvkm_fb_tile *tile)
50{
51	u32 tiles = DIV_ROUND_UP(size, 0x40);
52	u32 tags  = round_up(tiles / fb->ram->parts, 0x40);
53	if (!nvkm_mm_head(&fb->tags, 0, 1, tags, tags, 1, &tile->tag)) {
54		if (!(flags & 2)) tile->zcomp = 0x00000000; /* Z16 */
55		else              tile->zcomp = 0x04000000; /* Z24S8 */
56		tile->zcomp |= tile->tag->offset;
57		tile->zcomp |= 0x80000000; /* enable */
58#ifdef __BIG_ENDIAN
59		tile->zcomp |= 0x08000000;
60#endif
61	}
62}
63
64void
65nv20_fb_tile_fini(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
66{
67	tile->addr  = 0;
68	tile->limit = 0;
69	tile->pitch = 0;
70	tile->zcomp = 0;
71	nvkm_mm_free(&fb->tags, &tile->tag);
72}
73
74void
75nv20_fb_tile_prog(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
76{
77	struct nvkm_device *device = fb->subdev.device;
78	nvkm_wr32(device, 0x100244 + (i * 0x10), tile->limit);
79	nvkm_wr32(device, 0x100248 + (i * 0x10), tile->pitch);
80	nvkm_wr32(device, 0x100240 + (i * 0x10), tile->addr);
81	nvkm_rd32(device, 0x100240 + (i * 0x10));
82	nvkm_wr32(device, 0x100300 + (i * 0x04), tile->zcomp);
83}
84
85u32
86nv20_fb_tags(struct nvkm_fb *fb)
87{
88	const u32 tags = nvkm_rd32(fb->subdev.device, 0x100320);
89	return tags ? tags + 1 : 0;
90}
91
92static const struct nvkm_fb_func
93nv20_fb = {
94	.tags = nv20_fb_tags,
95	.tile.regions = 8,
96	.tile.init = nv20_fb_tile_init,
97	.tile.comp = nv20_fb_tile_comp,
98	.tile.fini = nv20_fb_tile_fini,
99	.tile.prog = nv20_fb_tile_prog,
100	.ram_new = nv20_ram_new,
101};
102
103int
104nv20_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
105{
106	return nvkm_fb_new_(&nv20_fb, device, index, pfb);
107}
108