1 | /* $NetBSD: nouveau_subdev_bios_disp.c,v 1.1.1.1 2014/08/06 12:36:28 riastradh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2012 Red Hat Inc. |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a |
7 | * copy of this software and associated documentation files (the "Software"), |
8 | * to deal in the Software without restriction, including without limitation |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
10 | * and/or sell copies of the Software, and to permit persons to whom the |
11 | * Software is furnished to do so, subject to the following conditions: |
12 | * |
13 | * The above copyright notice and this permission notice shall be included in |
14 | * all copies or substantial portions of the Software. |
15 | * |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
22 | * OTHER DEALINGS IN THE SOFTWARE. |
23 | * |
24 | * Authors: Ben Skeggs |
25 | */ |
26 | |
27 | #include <sys/cdefs.h> |
28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_bios_disp.c,v 1.1.1.1 2014/08/06 12:36:28 riastradh Exp $" ); |
29 | |
30 | #include <subdev/bios.h> |
31 | #include <subdev/bios/bit.h> |
32 | #include <subdev/bios/disp.h> |
33 | |
34 | u16 |
35 | nvbios_disp_table(struct nouveau_bios *bios, |
36 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *sub) |
37 | { |
38 | struct bit_entry U; |
39 | |
40 | if (!bit_entry(bios, 'U', &U)) { |
41 | if (U.version == 1) { |
42 | u16 data = nv_ro16(bios, U.offset); |
43 | if (data) { |
44 | *ver = nv_ro08(bios, data + 0x00); |
45 | switch (*ver) { |
46 | case 0x20: |
47 | case 0x21: |
48 | *hdr = nv_ro08(bios, data + 0x01); |
49 | *len = nv_ro08(bios, data + 0x02); |
50 | *cnt = nv_ro08(bios, data + 0x03); |
51 | *sub = nv_ro08(bios, data + 0x04); |
52 | return data; |
53 | default: |
54 | break; |
55 | } |
56 | } |
57 | } |
58 | } |
59 | |
60 | return 0x0000; |
61 | } |
62 | |
63 | u16 |
64 | nvbios_disp_entry(struct nouveau_bios *bios, u8 idx, |
65 | u8 *ver, u8 *len, u8 *sub) |
66 | { |
67 | u8 hdr, cnt; |
68 | u16 data = nvbios_disp_table(bios, ver, &hdr, &cnt, len, sub); |
69 | if (data && idx < cnt) |
70 | return data + hdr + (idx * *len); |
71 | *ver = 0x00; |
72 | return 0x0000; |
73 | } |
74 | |
75 | u16 |
76 | nvbios_disp_parse(struct nouveau_bios *bios, u8 idx, |
77 | u8 *ver, u8 *len, u8 *sub, |
78 | struct nvbios_disp *info) |
79 | { |
80 | u16 data = nvbios_disp_entry(bios, idx, ver, len, sub); |
81 | if (data && *len >= 2) { |
82 | info->data = nv_ro16(bios, data + 0); |
83 | return data; |
84 | } |
85 | return 0x0000; |
86 | } |
87 | |
88 | u16 |
89 | nvbios_outp_entry(struct nouveau_bios *bios, u8 idx, |
90 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
91 | { |
92 | struct nvbios_disp info; |
93 | u16 data = nvbios_disp_parse(bios, idx, ver, len, hdr, &info); |
94 | if (data) { |
95 | *cnt = nv_ro08(bios, info.data + 0x05); |
96 | *len = 0x06; |
97 | data = info.data; |
98 | } |
99 | return data; |
100 | } |
101 | |
102 | u16 |
103 | nvbios_outp_parse(struct nouveau_bios *bios, u8 idx, |
104 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len, |
105 | struct nvbios_outp *info) |
106 | { |
107 | u16 data = nvbios_outp_entry(bios, idx, ver, hdr, cnt, len); |
108 | if (data && *hdr >= 0x0a) { |
109 | info->type = nv_ro16(bios, data + 0x00); |
110 | info->mask = nv_ro32(bios, data + 0x02); |
111 | if (*ver <= 0x20) /* match any link */ |
112 | info->mask |= 0x00c0; |
113 | info->script[0] = nv_ro16(bios, data + 0x06); |
114 | info->script[1] = nv_ro16(bios, data + 0x08); |
115 | info->script[2] = 0x0000; |
116 | if (*hdr >= 0x0c) |
117 | info->script[2] = nv_ro16(bios, data + 0x0a); |
118 | return data; |
119 | } |
120 | return 0x0000; |
121 | } |
122 | |
123 | u16 |
124 | nvbios_outp_match(struct nouveau_bios *bios, u16 type, u16 mask, |
125 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len, |
126 | struct nvbios_outp *info) |
127 | { |
128 | u16 data, idx = 0; |
129 | while ((data = nvbios_outp_parse(bios, idx++, ver, hdr, cnt, len, info)) || *ver) { |
130 | if (data && info->type == type) { |
131 | if ((info->mask & mask) == mask) |
132 | break; |
133 | } |
134 | } |
135 | return data; |
136 | } |
137 | |
138 | u16 |
139 | nvbios_ocfg_entry(struct nouveau_bios *bios, u16 outp, u8 idx, |
140 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
141 | { |
142 | if (idx < *cnt) |
143 | return outp + *hdr + (idx * *len); |
144 | return 0x0000; |
145 | } |
146 | |
147 | u16 |
148 | nvbios_ocfg_parse(struct nouveau_bios *bios, u16 outp, u8 idx, |
149 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len, |
150 | struct nvbios_ocfg *info) |
151 | { |
152 | u16 data = nvbios_ocfg_entry(bios, outp, idx, ver, hdr, cnt, len); |
153 | if (data) { |
154 | info->match = nv_ro16(bios, data + 0x00); |
155 | info->clkcmp[0] = nv_ro16(bios, data + 0x02); |
156 | info->clkcmp[1] = nv_ro16(bios, data + 0x04); |
157 | } |
158 | return data; |
159 | } |
160 | |
161 | u16 |
162 | nvbios_ocfg_match(struct nouveau_bios *bios, u16 outp, u16 type, |
163 | u8 *ver, u8 *hdr, u8 *cnt, u8 *len, |
164 | struct nvbios_ocfg *info) |
165 | { |
166 | u16 data, idx = 0; |
167 | while ((data = nvbios_ocfg_parse(bios, outp, idx++, ver, hdr, cnt, len, info))) { |
168 | if (info->match == type) |
169 | break; |
170 | } |
171 | return data; |
172 | } |
173 | |
174 | u16 |
175 | nvbios_oclk_match(struct nouveau_bios *bios, u16 cmp, u32 khz) |
176 | { |
177 | while (cmp) { |
178 | if (khz / 10 >= nv_ro16(bios, cmp + 0x00)) |
179 | return nv_ro16(bios, cmp + 0x02); |
180 | cmp += 0x04; |
181 | } |
182 | return 0x0000; |
183 | } |
184 | |