1 | /* $NetBSD: nouveau_subdev_bios_vmap.c,v 1.1.1.1 2014/08/06 12:36:29 riastradh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2012 Nouveau Community |
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: Martin Peres |
25 | */ |
26 | |
27 | #include <sys/cdefs.h> |
28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_bios_vmap.c,v 1.1.1.1 2014/08/06 12:36:29 riastradh Exp $" ); |
29 | |
30 | #include <subdev/bios.h> |
31 | #include <subdev/bios/bit.h> |
32 | #include <subdev/bios/vmap.h> |
33 | |
34 | u16 |
35 | nvbios_vmap_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
36 | { |
37 | struct bit_entry bit_P; |
38 | u16 vmap = 0x0000; |
39 | |
40 | if (!bit_entry(bios, 'P', &bit_P)) { |
41 | if (bit_P.version == 2) { |
42 | vmap = nv_ro16(bios, bit_P.offset + 0x20); |
43 | if (vmap) { |
44 | *ver = nv_ro08(bios, vmap + 0); |
45 | switch (*ver) { |
46 | case 0x10: |
47 | case 0x20: |
48 | *hdr = nv_ro08(bios, vmap + 1); |
49 | *cnt = nv_ro08(bios, vmap + 3); |
50 | *len = nv_ro08(bios, vmap + 2); |
51 | return vmap; |
52 | default: |
53 | break; |
54 | } |
55 | } |
56 | } |
57 | } |
58 | |
59 | return 0x0000; |
60 | } |
61 | |
62 | u16 |
63 | nvbios_vmap_parse(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len, |
64 | struct nvbios_vmap *info) |
65 | { |
66 | u16 vmap = nvbios_vmap_table(bios, ver, hdr, cnt, len); |
67 | memset(info, 0x00, sizeof(*info)); |
68 | switch (!!vmap * *ver) { |
69 | case 0x10: |
70 | case 0x20: |
71 | break; |
72 | } |
73 | return vmap; |
74 | } |
75 | |
76 | u16 |
77 | nvbios_vmap_entry(struct nouveau_bios *bios, int idx, u8 *ver, u8 *len) |
78 | { |
79 | u8 hdr, cnt; |
80 | u16 vmap = nvbios_vmap_table(bios, ver, &hdr, &cnt, len); |
81 | if (vmap && idx < cnt) { |
82 | vmap = vmap + hdr + (idx * *len); |
83 | return vmap; |
84 | } |
85 | return 0x0000; |
86 | } |
87 | |
88 | u16 |
89 | nvbios_vmap_entry_parse(struct nouveau_bios *bios, int idx, u8 *ver, u8 *len, |
90 | struct nvbios_vmap_entry *info) |
91 | { |
92 | u16 vmap = nvbios_vmap_entry(bios, idx, ver, len); |
93 | memset(info, 0x00, sizeof(*info)); |
94 | switch (!!vmap * *ver) { |
95 | case 0x10: |
96 | info->link = 0xff; |
97 | info->min = nv_ro32(bios, vmap + 0x00); |
98 | info->max = nv_ro32(bios, vmap + 0x04); |
99 | info->arg[0] = nv_ro32(bios, vmap + 0x08); |
100 | info->arg[1] = nv_ro32(bios, vmap + 0x0c); |
101 | info->arg[2] = nv_ro32(bios, vmap + 0x10); |
102 | break; |
103 | case 0x20: |
104 | info->unk0 = nv_ro08(bios, vmap + 0x00); |
105 | info->link = nv_ro08(bios, vmap + 0x01); |
106 | info->min = nv_ro32(bios, vmap + 0x02); |
107 | info->max = nv_ro32(bios, vmap + 0x06); |
108 | info->arg[0] = nv_ro32(bios, vmap + 0x0a); |
109 | info->arg[1] = nv_ro32(bios, vmap + 0x0e); |
110 | info->arg[2] = nv_ro32(bios, vmap + 0x12); |
111 | info->arg[3] = nv_ro32(bios, vmap + 0x16); |
112 | info->arg[4] = nv_ro32(bios, vmap + 0x1a); |
113 | info->arg[5] = nv_ro32(bios, vmap + 0x1e); |
114 | break; |
115 | } |
116 | return vmap; |
117 | } |
118 | |