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
|
/*
Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
<http://rt2x00.serialmonkey.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the
Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
Module: rt2x00lib
Abstract: rt2x00 firmware loading routines.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include "rt2x00.h"
#include "rt2x00lib.h"
static int rt2x00lib_request_firmware(struct rt2x00_dev *rt2x00dev)
{
struct device *device = wiphy_dev(rt2x00dev->hw->wiphy);
const struct firmware *fw;
char *fw_name;
int retval;
/*
* Read correct firmware from harddisk.
*/
fw_name = rt2x00dev->ops->lib->get_firmware_name(rt2x00dev);
if (!fw_name) {
ERROR(rt2x00dev,
"Invalid firmware filename.\n"
"Please file bug report to %s.\n", DRV_PROJECT);
return -EINVAL;
}
INFO(rt2x00dev, "Loading firmware file '%s'.\n", fw_name);
retval = request_firmware(&fw, fw_name, device);
if (retval) {
ERROR(rt2x00dev, "Failed to request Firmware.\n");
return retval;
}
if (!fw || !fw->size || !fw->data) {
ERROR(rt2x00dev, "Failed to read Firmware.\n");
return -ENOENT;
}
INFO(rt2x00dev, "Firmware detected - version: %d.%d.\n",
fw->data[fw->size - 4], fw->data[fw->size - 3]);
snprintf(rt2x00dev->hw->wiphy->fw_version,
sizeof(rt2x00dev->hw->wiphy->fw_version), "%d.%d",
fw->data[fw->size - 4], fw->data[fw->size - 3]);
retval = rt2x00dev->ops->lib->check_firmware(rt2x00dev, fw->data, fw->size);
switch (retval) {
case FW_OK:
break;
case FW_BAD_CRC:
ERROR(rt2x00dev, "Firmware checksum error.\n");
goto exit;
case FW_BAD_LENGTH:
ERROR(rt2x00dev,
"Invalid firmware file length (len=%zu)\n", fw->size);
goto exit;
case FW_BAD_VERSION:
ERROR(rt2x00dev,
"Current firmware does not support detected chipset.\n");
goto exit;
}
rt2x00dev->fw = fw;
return 0;
exit:
release_firmware(fw);
return -ENOENT;
}
int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev)
{
int retval;
if (!test_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags))
return 0;
if (!rt2x00dev->fw) {
retval = rt2x00lib_request_firmware(rt2x00dev);
if (retval)
return retval;
}
/*
* Send firmware to the device.
*/
retval = rt2x00dev->ops->lib->load_firmware(rt2x00dev,
rt2x00dev->fw->data,
rt2x00dev->fw->size);
/*
* When the firmware is uploaded to the hardware the LED
* association status might have been triggered, for correct
* LED handling it should now be reset.
*/
rt2x00leds_led_assoc(rt2x00dev, false);
return retval;
}
void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev)
{
release_firmware(rt2x00dev->fw);
rt2x00dev->fw = NULL;
}
|
