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
27 #include <subdev/fb.h>
28
29 struct nv30_fb_priv {
30 struct nouveau_fb base;
31 };
32
33 void
nv30_fb_tile_init(struct nouveau_fb * pfb,int i,u32 addr,u32 size,u32 pitch,u32 flags,struct nouveau_fb_tile * tile)34 nv30_fb_tile_init(struct nouveau_fb *pfb, int i, u32 addr, u32 size, u32 pitch,
35 u32 flags, struct nouveau_fb_tile *tile)
36 {
37 /* for performance, select alternate bank offset for zeta */
38 if (!(flags & 4)) {
39 tile->addr = (0 << 4);
40 } else {
41 if (pfb->tile.comp) /* z compression */
42 pfb->tile.comp(pfb, i, size, flags, tile);
43 tile->addr = (1 << 4);
44 }
45
46 tile->addr |= 0x00000001; /* enable */
47 tile->addr |= addr;
48 tile->limit = max(1u, addr + size) - 1;
49 tile->pitch = pitch;
50 }
51
52 static void
nv30_fb_tile_comp(struct nouveau_fb * pfb,int i,u32 size,u32 flags,struct nouveau_fb_tile * tile)53 nv30_fb_tile_comp(struct nouveau_fb *pfb, int i, u32 size, u32 flags,
54 struct nouveau_fb_tile *tile)
55 {
56 u32 tiles = DIV_ROUND_UP(size, 0x40);
57 u32 tags = round_up(tiles / pfb->ram.parts, 0x40);
58 if (!nouveau_mm_head(&pfb->tags, 1, tags, tags, 1, &tile->tag)) {
59 if (flags & 2) tile->zcomp |= 0x01000000; /* Z16 */
60 else tile->zcomp |= 0x02000000; /* Z24S8 */
61 tile->zcomp |= ((tile->tag->offset ) >> 6);
62 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 12;
63 #ifdef __BIG_ENDIAN
64 tile->zcomp |= 0x10000000;
65 #endif
66 }
67 }
68
69 static int
calc_bias(struct nv30_fb_priv * priv,int k,int i,int j)70 calc_bias(struct nv30_fb_priv *priv, int k, int i, int j)
71 {
72 struct nouveau_device *device = nv_device(priv);
73 int b = (device->chipset > 0x30 ?
74 nv_rd32(priv, 0x122c + 0x10 * k + 0x4 * j) >> (4 * (i ^ 1)) :
75 0) & 0xf;
76
77 return 2 * (b & 0x8 ? b - 0x10 : b);
78 }
79
80 static int
calc_ref(struct nv30_fb_priv * priv,int l,int k,int i)81 calc_ref(struct nv30_fb_priv *priv, int l, int k, int i)
82 {
83 int j, x = 0;
84
85 for (j = 0; j < 4; j++) {
86 int m = (l >> (8 * i) & 0xff) + calc_bias(priv, k, i, j);
87
88 x |= (0x80 | clamp(m, 0, 0x1f)) << (8 * j);
89 }
90
91 return x;
92 }
93
94 int
nv30_fb_init(struct nouveau_object * object)95 nv30_fb_init(struct nouveau_object *object)
96 {
97 struct nouveau_device *device = nv_device(object);
98 struct nv30_fb_priv *priv = (void *)object;
99 int ret, i, j;
100
101 ret = nouveau_fb_init(&priv->base);
102 if (ret)
103 return ret;
104
105 /* Init the memory timing regs at 0x10037c/0x1003ac */
106 if (device->chipset == 0x30 ||
107 device->chipset == 0x31 ||
108 device->chipset == 0x35) {
109 /* Related to ROP count */
110 int n = (device->chipset == 0x31 ? 2 : 4);
111 int l = nv_rd32(priv, 0x1003d0);
112
113 for (i = 0; i < n; i++) {
114 for (j = 0; j < 3; j++)
115 nv_wr32(priv, 0x10037c + 0xc * i + 0x4 * j,
116 calc_ref(priv, l, 0, j));
117
118 for (j = 0; j < 2; j++)
119 nv_wr32(priv, 0x1003ac + 0x8 * i + 0x4 * j,
120 calc_ref(priv, l, 1, j));
121 }
122 }
123
124 return 0;
125 }
126
127 static int
nv30_fb_ctor(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,void * data,u32 size,struct nouveau_object ** pobject)128 nv30_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
129 struct nouveau_oclass *oclass, void *data, u32 size,
130 struct nouveau_object **pobject)
131 {
132 struct nv30_fb_priv *priv;
133 int ret;
134
135 ret = nouveau_fb_create(parent, engine, oclass, &priv);
136 *pobject = nv_object(priv);
137 if (ret)
138 return ret;
139
140 priv->base.memtype_valid = nv04_fb_memtype_valid;
141 priv->base.ram.init = nv20_fb_vram_init;
142 priv->base.tile.regions = 8;
143 priv->base.tile.init = nv30_fb_tile_init;
144 priv->base.tile.comp = nv30_fb_tile_comp;
145 priv->base.tile.fini = nv20_fb_tile_fini;
146 priv->base.tile.prog = nv20_fb_tile_prog;
147 return nouveau_fb_preinit(&priv->base);
148 }
149
150 struct nouveau_oclass
151 nv30_fb_oclass = {
152 .handle = NV_SUBDEV(FB, 0x30),
153 .ofuncs = &(struct nouveau_ofuncs) {
154 .ctor = nv30_fb_ctor,
155 .dtor = _nouveau_fb_dtor,
156 .init = nv30_fb_init,
157 .fini = _nouveau_fb_fini,
158 },
159 };
160