1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*
* Copyright 2014 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#include <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/M0203.h>
u32
nvbios_M0203Te(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
{
struct bit_entry bit_M;
u32 data = 0x00000000;
if (!bit_entry(bios, 'M', &bit_M)) {
if (bit_M.version == 2 && bit_M.length > 0x04)
data = nvbios_rd16(bios, bit_M.offset + 0x03);
if (data) {
*ver = nvbios_rd08(bios, data + 0x00);
switch (*ver) {
case 0x10:
*hdr = nvbios_rd08(bios, data + 0x01);
*len = nvbios_rd08(bios, data + 0x02);
*cnt = nvbios_rd08(bios, data + 0x03);
return data;
default:
break;
}
}
}
return 0x00000000;
}
u32
nvbios_M0203Tp(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
struct nvbios_M0203T *info)
{
u32 data = nvbios_M0203Te(bios, ver, hdr, cnt, len);
memset(info, 0x00, sizeof(*info));
switch (!!data * *ver) {
case 0x10:
info->type = nvbios_rd08(bios, data + 0x04);
info->pointer = nvbios_rd16(bios, data + 0x05);
break;
default:
break;
}
return data;
}
u32
nvbios_M0203Ee(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr)
{
u8 cnt, len;
u32 data = nvbios_M0203Te(bios, ver, hdr, &cnt, &len);
if (data && idx < cnt) {
data = data + *hdr + idx * len;
*hdr = len;
return data;
}
return 0x00000000;
}
u32
nvbios_M0203Ep(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr,
struct nvbios_M0203E *info)
{
u32 data = nvbios_M0203Ee(bios, idx, ver, hdr);
memset(info, 0x00, sizeof(*info));
switch (!!data * *ver) {
case 0x10:
info->type = (nvbios_rd08(bios, data + 0x00) & 0x0f) >> 0;
info->strap = (nvbios_rd08(bios, data + 0x00) & 0xf0) >> 4;
info->group = (nvbios_rd08(bios, data + 0x01) & 0x0f) >> 0;
return data;
default:
break;
}
return 0x00000000;
}
u32
nvbios_M0203Em(struct nvkm_bios *bios, u8 ramcfg, u8 *ver, u8 *hdr,
struct nvbios_M0203E *info)
{
struct nvkm_subdev *subdev = &bios->subdev;
struct nvbios_M0203T M0203T;
u8 cnt, len, idx = 0xff;
u32 data;
if (!nvbios_M0203Tp(bios, ver, hdr, &cnt, &len, &M0203T)) {
nvkm_warn(subdev, "M0203T not found\n");
return 0x00000000;
}
while ((data = nvbios_M0203Ep(bios, ++idx, ver, hdr, info))) {
switch (M0203T.type) {
case M0203T_TYPE_RAMCFG:
if (info->strap != ramcfg)
continue;
return data;
default:
nvkm_warn(subdev, "M0203T type %02x\n", M0203T.type);
return 0x00000000;
}
}
return data;
}
|
