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Ivo van Doorn95ea3622007-09-25 17:57:13 -07001/*
Gertjan van Wingerde9c9a0d12009-11-08 16:39:55 +01002 Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
3 Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
Ivo van Doorn95ea3622007-09-25 17:57:13 -07004 <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
Ivo van Doorn95ea3622007-09-25 17:57:13 -070027#include <linux/kernel.h>
28#include <linux/module.h>
29
30#include "rt2x00.h"
31#include "rt2x00lib.h"
32
33static 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;
Ivo van Doorn95ea3622007-09-25 17:57:13 -070039
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");
61 return -ENOENT;
62 }
63
Ivo van Doorn95ea3622007-09-25 17:57:13 -070064 INFO(rt2x00dev, "Firmware detected - version: %d.%d.\n",
65 fw->data[fw->size - 4], fw->data[fw->size - 3]);
John W. Linvilledd358c92010-07-29 13:50:39 -040066 snprintf(rt2x00dev->hw->wiphy->fw_version,
67 sizeof(rt2x00dev->hw->wiphy->fw_version), "%d.%d",
68 fw->data[fw->size - 4], fw->data[fw->size - 3]);
Ivo van Doorn95ea3622007-09-25 17:57:13 -070069
Ivo van Doorn0cbe0062009-01-28 00:33:47 +010070 retval = rt2x00dev->ops->lib->check_firmware(rt2x00dev, fw->data, fw->size);
71 switch (retval) {
72 case FW_OK:
73 break;
74 case FW_BAD_CRC:
75 ERROR(rt2x00dev, "Firmware checksum error.\n");
76 goto exit;
77 case FW_BAD_LENGTH:
78 ERROR(rt2x00dev,
79 "Invalid firmware file length (len=%zu)\n", fw->size);
80 goto exit;
81 case FW_BAD_VERSION:
82 ERROR(rt2x00dev,
83 "Current firmware does not support detected chipset.\n");
84 goto exit;
Joe Perchesee289b62010-05-17 22:47:34 -070085 }
Ivo van Doorn0cbe0062009-01-28 00:33:47 +010086
Ivo van Doorn95ea3622007-09-25 17:57:13 -070087 rt2x00dev->fw = fw;
88
89 return 0;
90
91exit:
92 release_firmware(fw);
93
Ivo van Doorn0cbe0062009-01-28 00:33:47 +010094 return -ENOENT;
Ivo van Doorn95ea3622007-09-25 17:57:13 -070095}
96
97int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev)
98{
99 int retval;
100
Ivo van Doorn9404ef32008-02-03 15:48:38 +0100101 if (!test_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags))
102 return 0;
103
Ivo van Doorn95ea3622007-09-25 17:57:13 -0700104 if (!rt2x00dev->fw) {
105 retval = rt2x00lib_request_firmware(rt2x00dev);
106 if (retval)
107 return retval;
108 }
109
110 /*
111 * Send firmware to the device.
112 */
113 retval = rt2x00dev->ops->lib->load_firmware(rt2x00dev,
114 rt2x00dev->fw->data,
115 rt2x00dev->fw->size);
Ivo van Doorn4c9adaf2008-07-13 10:07:48 +0200116
117 /*
118 * When the firmware is uploaded to the hardware the LED
119 * association status might have been triggered, for correct
120 * LED handling it should now be reset.
121 */
122 rt2x00leds_led_assoc(rt2x00dev, false);
123
Ivo van Doorn95ea3622007-09-25 17:57:13 -0700124 return retval;
125}
126
127void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev)
128{
129 release_firmware(rt2x00dev->fw);
130 rt2x00dev->fw = NULL;
131}