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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/*
* Copyright 2012 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 "priv.h"
#include <subdev/bios.h>
#include <subdev/bios/bmp.h>
#include <subdev/bios/bit.h>
u8
nvbios_checksum(const u8 *data, int size)
{
u8 sum = 0;
while (size--)
sum += *data++;
return sum;
}
u16
nvbios_findstr(const u8 *data, int size, const char *str, int len)
{
int i, j;
for (i = 0; i <= (size - len); i++) {
for (j = 0; j < len; j++)
if ((char)data[i + j] != str[j])
break;
if (j == len)
return i;
}
return 0;
}
int
nvbios_extend(struct nvkm_bios *bios, u32 length)
{
if (bios->size < length) {
u8 *prev = bios->data;
if (!(bios->data = kmalloc(length, GFP_KERNEL))) {
bios->data = prev;
return -ENOMEM;
}
memcpy(bios->data, prev, bios->size);
bios->size = length;
kfree(prev);
return 1;
}
return 0;
}
static u8
nvkm_bios_rd08(struct nvkm_object *object, u64 addr)
{
struct nvkm_bios *bios = (void *)object;
return bios->data[addr];
}
static u16
nvkm_bios_rd16(struct nvkm_object *object, u64 addr)
{
struct nvkm_bios *bios = (void *)object;
return get_unaligned_le16(&bios->data[addr]);
}
static u32
nvkm_bios_rd32(struct nvkm_object *object, u64 addr)
{
struct nvkm_bios *bios = (void *)object;
return get_unaligned_le32(&bios->data[addr]);
}
static void
nvkm_bios_wr08(struct nvkm_object *object, u64 addr, u8 data)
{
struct nvkm_bios *bios = (void *)object;
bios->data[addr] = data;
}
static void
nvkm_bios_wr16(struct nvkm_object *object, u64 addr, u16 data)
{
struct nvkm_bios *bios = (void *)object;
put_unaligned_le16(data, &bios->data[addr]);
}
static void
nvkm_bios_wr32(struct nvkm_object *object, u64 addr, u32 data)
{
struct nvkm_bios *bios = (void *)object;
put_unaligned_le32(data, &bios->data[addr]);
}
static int
nvkm_bios_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
struct nvkm_oclass *oclass, void *data, u32 size,
struct nvkm_object **pobject)
{
struct nvkm_bios *bios;
struct bit_entry bit_i;
int ret;
ret = nvkm_subdev_create(parent, engine, oclass, 0,
"VBIOS", "bios", &bios);
*pobject = nv_object(bios);
if (ret)
return ret;
ret = nvbios_shadow(bios);
if (ret)
return ret;
/* detect type of vbios we're dealing with */
bios->bmp_offset = nvbios_findstr(bios->data, bios->size,
"\xff\x7f""NV\0", 5);
if (bios->bmp_offset) {
nvkm_debug(&bios->subdev, "BMP version %x.%x\n",
bmp_version(bios) >> 8,
bmp_version(bios) & 0xff);
}
bios->bit_offset = nvbios_findstr(bios->data, bios->size,
"\xff\xb8""BIT", 5);
if (bios->bit_offset)
nvkm_debug(&bios->subdev, "BIT signature found\n");
/* determine the vbios version number */
if (!bit_entry(bios, 'i', &bit_i) && bit_i.length >= 4) {
bios->version.major = nv_ro08(bios, bit_i.offset + 3);
bios->version.chip = nv_ro08(bios, bit_i.offset + 2);
bios->version.minor = nv_ro08(bios, bit_i.offset + 1);
bios->version.micro = nv_ro08(bios, bit_i.offset + 0);
bios->version.patch = nv_ro08(bios, bit_i.offset + 4);
} else
if (bmp_version(bios)) {
bios->version.major = nv_ro08(bios, bios->bmp_offset + 13);
bios->version.chip = nv_ro08(bios, bios->bmp_offset + 12);
bios->version.minor = nv_ro08(bios, bios->bmp_offset + 11);
bios->version.micro = nv_ro08(bios, bios->bmp_offset + 10);
}
nvkm_info(&bios->subdev, "version %02x.%02x.%02x.%02x.%02x\n",
bios->version.major, bios->version.chip,
bios->version.minor, bios->version.micro, bios->version.patch);
return 0;
}
static void
nvkm_bios_dtor(struct nvkm_object *object)
{
struct nvkm_bios *bios = (void *)object;
kfree(bios->data);
nvkm_subdev_destroy(&bios->subdev);
}
static int
nvkm_bios_init(struct nvkm_object *object)
{
struct nvkm_bios *bios = (void *)object;
return nvkm_subdev_init(&bios->subdev);
}
static int
nvkm_bios_fini(struct nvkm_object *object, bool suspend)
{
struct nvkm_bios *bios = (void *)object;
return nvkm_subdev_fini(&bios->subdev, suspend);
}
struct nvkm_oclass
nvkm_bios_oclass = {
.handle = NV_SUBDEV(VBIOS, 0x00),
.ofuncs = &(struct nvkm_ofuncs) {
.ctor = nvkm_bios_ctor,
.dtor = nvkm_bios_dtor,
.init = nvkm_bios_init,
.fini = nvkm_bios_fini,
.rd08 = nvkm_bios_rd08,
.rd16 = nvkm_bios_rd16,
.rd32 = nvkm_bios_rd32,
.wr08 = nvkm_bios_wr08,
.wr16 = nvkm_bios_wr16,
.wr32 = nvkm_bios_wr32,
},
};
|
