1/* $NetBSD: nouveau_subdev_fb_nv30.c,v 1.1.1.1 2014/08/06 12:36:30 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
29#include <sys/cdefs.h>
30__KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_fb_nv30.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $");
31
32#include "nv04.h"
33
34void
35nv30_fb_tile_init(struct nouveau_fb *pfb, int i, u32 addr, u32 size, u32 pitch,
36 u32 flags, struct nouveau_fb_tile *tile)
37{
38 /* for performance, select alternate bank offset for zeta */
39 if (!(flags & 4)) {
40 tile->addr = (0 << 4);
41 } else {
42 if (pfb->tile.comp) /* z compression */
43 pfb->tile.comp(pfb, i, size, flags, tile);
44 tile->addr = (1 << 4);
45 }
46
47 tile->addr |= 0x00000001; /* enable */
48 tile->addr |= addr;
49 tile->limit = max(1u, addr + size) - 1;
50 tile->pitch = pitch;
51}
52
53static void
54nv30_fb_tile_comp(struct nouveau_fb *pfb, int i, u32 size, u32 flags,
55 struct nouveau_fb_tile *tile)
56{
57 u32 tiles = DIV_ROUND_UP(size, 0x40);
58 u32 tags = round_up(tiles / pfb->ram->parts, 0x40);
59 if (!nouveau_mm_head(&pfb->tags, 1, tags, tags, 1, &tile->tag)) {
60 if (flags & 2) tile->zcomp |= 0x01000000; /* Z16 */
61 else tile->zcomp |= 0x02000000; /* Z24S8 */
62 tile->zcomp |= ((tile->tag->offset ) >> 6);
63 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 12;
64#ifdef __BIG_ENDIAN
65 tile->zcomp |= 0x10000000;
66#endif
67 }
68}
69
70static int
71calc_bias(struct nv04_fb_priv *priv, int k, int i, int j)
72{
73 struct nouveau_device *device = nv_device(priv);
74 int b = (device->chipset > 0x30 ?
75 nv_rd32(priv, 0x122c + 0x10 * k + 0x4 * j) >> (4 * (i ^ 1)) :
76 0) & 0xf;
77
78 return 2 * (b & 0x8 ? b - 0x10 : b);
79}
80
81static int
82calc_ref(struct nv04_fb_priv *priv, int l, int k, int i)
83{
84 int j, x = 0;
85
86 for (j = 0; j < 4; j++) {
87 int m = (l >> (8 * i) & 0xff) + calc_bias(priv, k, i, j);
88
89 x |= (0x80 | clamp(m, 0, 0x1f)) << (8 * j);
90 }
91
92 return x;
93}
94
95int
96nv30_fb_init(struct nouveau_object *object)
97{
98 struct nouveau_device *device = nv_device(object);
99 struct nv04_fb_priv *priv = (void *)object;
100 int ret, i, j;
101
102 ret = nouveau_fb_init(&priv->base);
103 if (ret)
104 return ret;
105
106 /* Init the memory timing regs at 0x10037c/0x1003ac */
107 if (device->chipset == 0x30 ||
108 device->chipset == 0x31 ||
109 device->chipset == 0x35) {
110 /* Related to ROP count */
111 int n = (device->chipset == 0x31 ? 2 : 4);
112 int l = nv_rd32(priv, 0x1003d0);
113
114 for (i = 0; i < n; i++) {
115 for (j = 0; j < 3; j++)
116 nv_wr32(priv, 0x10037c + 0xc * i + 0x4 * j,
117 calc_ref(priv, l, 0, j));
118
119 for (j = 0; j < 2; j++)
120 nv_wr32(priv, 0x1003ac + 0x8 * i + 0x4 * j,
121 calc_ref(priv, l, 1, j));
122 }
123 }
124
125 return 0;
126}
127
128struct nouveau_oclass *
129nv30_fb_oclass = &(struct nv04_fb_impl) {
130 .base.base.handle = NV_SUBDEV(FB, 0x30),
131 .base.base.ofuncs = &(struct nouveau_ofuncs) {
132 .ctor = nv04_fb_ctor,
133 .dtor = _nouveau_fb_dtor,
134 .init = nv30_fb_init,
135 .fini = _nouveau_fb_fini,
136 },
137 .base.memtype = nv04_fb_memtype_valid,
138 .base.ram = &nv20_ram_oclass,
139 .tile.regions = 8,
140 .tile.init = nv30_fb_tile_init,
141 .tile.comp = nv30_fb_tile_comp,
142 .tile.fini = nv20_fb_tile_fini,
143 .tile.prog = nv20_fb_tile_prog,
144}.base.base;
145