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95ea3627 | 1 | /* |
9c9a0d14 GW |
2 | Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> |
3 | Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com> | |
95ea3627 ID |
4 | <http://rt2x00.serialmonkey.com> |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the | |
18 | Free Software Foundation, Inc., | |
19 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | /* | |
23 | Module: rt2x00lib | |
24 | Abstract: rt2x00 firmware loading routines. | |
25 | */ | |
26 | ||
95ea3627 ID |
27 | #include <linux/kernel.h> |
28 | #include <linux/module.h> | |
29 | ||
30 | #include "rt2x00.h" | |
31 | #include "rt2x00lib.h" | |
32 | ||
33 | static int rt2x00lib_request_firmware(struct rt2x00_dev *rt2x00dev) | |
34 | { | |
35 | struct device *device = wiphy_dev(rt2x00dev->hw->wiphy); | |
36 | const struct firmware *fw; | |
37 | char *fw_name; | |
38 | int retval; | |
95ea3627 ID |
39 | |
40 | /* | |
41 | * Read correct firmware from harddisk. | |
42 | */ | |
43 | fw_name = rt2x00dev->ops->lib->get_firmware_name(rt2x00dev); | |
44 | if (!fw_name) { | |
45 | ERROR(rt2x00dev, | |
46 | "Invalid firmware filename.\n" | |
47 | "Please file bug report to %s.\n", DRV_PROJECT); | |
48 | return -EINVAL; | |
49 | } | |
50 | ||
51 | INFO(rt2x00dev, "Loading firmware file '%s'.\n", fw_name); | |
52 | ||
53 | retval = request_firmware(&fw, fw_name, device); | |
54 | if (retval) { | |
55 | ERROR(rt2x00dev, "Failed to request Firmware.\n"); | |
56 | return retval; | |
57 | } | |
58 | ||
59 | if (!fw || !fw->size || !fw->data) { | |
60 | ERROR(rt2x00dev, "Failed to read Firmware.\n"); | |
ccbd4d41 | 61 | release_firmware(fw); |
95ea3627 ID |
62 | return -ENOENT; |
63 | } | |
64 | ||
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65 | INFO(rt2x00dev, "Firmware detected - version: %d.%d.\n", |
66 | fw->data[fw->size - 4], fw->data[fw->size - 3]); | |
dd358c9a JL |
67 | snprintf(rt2x00dev->hw->wiphy->fw_version, |
68 | sizeof(rt2x00dev->hw->wiphy->fw_version), "%d.%d", | |
69 | fw->data[fw->size - 4], fw->data[fw->size - 3]); | |
95ea3627 | 70 | |
0cbe0064 ID |
71 | retval = rt2x00dev->ops->lib->check_firmware(rt2x00dev, fw->data, fw->size); |
72 | switch (retval) { | |
73 | case FW_OK: | |
74 | break; | |
75 | case FW_BAD_CRC: | |
76 | ERROR(rt2x00dev, "Firmware checksum error.\n"); | |
77 | goto exit; | |
78 | case FW_BAD_LENGTH: | |
79 | ERROR(rt2x00dev, | |
80 | "Invalid firmware file length (len=%zu)\n", fw->size); | |
81 | goto exit; | |
82 | case FW_BAD_VERSION: | |
83 | ERROR(rt2x00dev, | |
84 | "Current firmware does not support detected chipset.\n"); | |
85 | goto exit; | |
ee289b64 | 86 | } |
0cbe0064 | 87 | |
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88 | rt2x00dev->fw = fw; |
89 | ||
90 | return 0; | |
91 | ||
92 | exit: | |
93 | release_firmware(fw); | |
94 | ||
0cbe0064 | 95 | return -ENOENT; |
95ea3627 ID |
96 | } |
97 | ||
98 | int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev) | |
99 | { | |
100 | int retval; | |
101 | ||
7dab73b3 | 102 | if (!test_bit(REQUIRE_FIRMWARE, &rt2x00dev->cap_flags)) |
9404ef34 ID |
103 | return 0; |
104 | ||
95ea3627 ID |
105 | if (!rt2x00dev->fw) { |
106 | retval = rt2x00lib_request_firmware(rt2x00dev); | |
107 | if (retval) | |
108 | return retval; | |
109 | } | |
110 | ||
111 | /* | |
112 | * Send firmware to the device. | |
113 | */ | |
114 | retval = rt2x00dev->ops->lib->load_firmware(rt2x00dev, | |
115 | rt2x00dev->fw->data, | |
116 | rt2x00dev->fw->size); | |
4c9adaff ID |
117 | |
118 | /* | |
119 | * When the firmware is uploaded to the hardware the LED | |
120 | * association status might have been triggered, for correct | |
121 | * LED handling it should now be reset. | |
122 | */ | |
123 | rt2x00leds_led_assoc(rt2x00dev, false); | |
124 | ||
95ea3627 ID |
125 | return retval; |
126 | } | |
127 | ||
128 | void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev) | |
129 | { | |
130 | release_firmware(rt2x00dev->fw); | |
131 | rt2x00dev->fw = NULL; | |
132 | } |