Commit | Line | Data |
---|---|---|
75388acd LF |
1 | /* |
2 | ||
3 | Broadcom B43legacy wireless driver | |
4 | ||
5 | SYSFS support routines | |
6 | ||
eb032b98 | 7 | Copyright (c) 2006 Michael Buesch <m@bues.ch> |
75388acd LF |
8 | |
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; see the file COPYING. If not, write to | |
21 | the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor, | |
22 | Boston, MA 02110-1301, USA. | |
23 | ||
24 | */ | |
25 | ||
26 | #include "sysfs.h" | |
27 | #include "b43legacy.h" | |
28 | #include "main.h" | |
29 | #include "phy.h" | |
30 | #include "radio.h" | |
31 | ||
32 | #include <linux/capability.h> | |
33 | ||
34 | ||
35 | #define GENERIC_FILESIZE 64 | |
36 | ||
37 | ||
38 | static int get_integer(const char *buf, size_t count) | |
39 | { | |
40 | char tmp[10 + 1] = { 0 }; | |
41 | int ret = -EINVAL; | |
42 | ||
43 | if (count == 0) | |
44 | goto out; | |
45 | count = min(count, (size_t)10); | |
46 | memcpy(tmp, buf, count); | |
47 | ret = simple_strtol(tmp, NULL, 10); | |
48 | out: | |
49 | return ret; | |
50 | } | |
51 | ||
52 | static int get_boolean(const char *buf, size_t count) | |
53 | { | |
54 | if (count != 0) { | |
55 | if (buf[0] == '1') | |
56 | return 1; | |
57 | if (buf[0] == '0') | |
58 | return 0; | |
59 | if (count >= 4 && memcmp(buf, "true", 4) == 0) | |
60 | return 1; | |
61 | if (count >= 5 && memcmp(buf, "false", 5) == 0) | |
62 | return 0; | |
63 | if (count >= 3 && memcmp(buf, "yes", 3) == 0) | |
64 | return 1; | |
65 | if (count >= 2 && memcmp(buf, "no", 2) == 0) | |
66 | return 0; | |
67 | if (count >= 2 && memcmp(buf, "on", 2) == 0) | |
68 | return 1; | |
69 | if (count >= 3 && memcmp(buf, "off", 3) == 0) | |
70 | return 0; | |
71 | } | |
72 | return -EINVAL; | |
73 | } | |
74 | ||
75 | static ssize_t b43legacy_attr_interfmode_show(struct device *dev, | |
76 | struct device_attribute *attr, | |
77 | char *buf) | |
78 | { | |
79 | struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); | |
80 | ssize_t count = 0; | |
81 | ||
82 | if (!capable(CAP_NET_ADMIN)) | |
83 | return -EPERM; | |
84 | ||
85 | mutex_lock(&wldev->wl->mutex); | |
86 | ||
87 | switch (wldev->phy.interfmode) { | |
88 | case B43legacy_INTERFMODE_NONE: | |
89 | count = snprintf(buf, PAGE_SIZE, "0 (No Interference" | |
90 | " Mitigation)\n"); | |
91 | break; | |
92 | case B43legacy_INTERFMODE_NONWLAN: | |
93 | count = snprintf(buf, PAGE_SIZE, "1 (Non-WLAN Interference" | |
94 | " Mitigation)\n"); | |
95 | break; | |
96 | case B43legacy_INTERFMODE_MANUALWLAN: | |
97 | count = snprintf(buf, PAGE_SIZE, "2 (WLAN Interference" | |
98 | " Mitigation)\n"); | |
99 | break; | |
100 | default: | |
101 | B43legacy_WARN_ON(1); | |
102 | } | |
103 | ||
104 | mutex_unlock(&wldev->wl->mutex); | |
105 | ||
106 | return count; | |
107 | } | |
108 | ||
109 | static ssize_t b43legacy_attr_interfmode_store(struct device *dev, | |
110 | struct device_attribute *attr, | |
111 | const char *buf, size_t count) | |
112 | { | |
113 | struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); | |
114 | unsigned long flags; | |
115 | int err; | |
116 | int mode; | |
117 | ||
118 | if (!capable(CAP_NET_ADMIN)) | |
119 | return -EPERM; | |
120 | ||
121 | mode = get_integer(buf, count); | |
122 | switch (mode) { | |
123 | case 0: | |
124 | mode = B43legacy_INTERFMODE_NONE; | |
125 | break; | |
126 | case 1: | |
127 | mode = B43legacy_INTERFMODE_NONWLAN; | |
128 | break; | |
129 | case 2: | |
130 | mode = B43legacy_INTERFMODE_MANUALWLAN; | |
131 | break; | |
132 | case 3: | |
133 | mode = B43legacy_INTERFMODE_AUTOWLAN; | |
134 | break; | |
135 | default: | |
136 | return -EINVAL; | |
137 | } | |
138 | ||
139 | mutex_lock(&wldev->wl->mutex); | |
140 | spin_lock_irqsave(&wldev->wl->irq_lock, flags); | |
141 | ||
142 | err = b43legacy_radio_set_interference_mitigation(wldev, mode); | |
143 | if (err) | |
144 | b43legacyerr(wldev->wl, "Interference Mitigation not " | |
145 | "supported by device\n"); | |
146 | mmiowb(); | |
147 | spin_unlock_irqrestore(&wldev->wl->irq_lock, flags); | |
148 | mutex_unlock(&wldev->wl->mutex); | |
149 | ||
150 | return err ? err : count; | |
151 | } | |
152 | ||
153 | static DEVICE_ATTR(interference, 0644, | |
154 | b43legacy_attr_interfmode_show, | |
155 | b43legacy_attr_interfmode_store); | |
156 | ||
157 | static ssize_t b43legacy_attr_preamble_show(struct device *dev, | |
158 | struct device_attribute *attr, | |
159 | char *buf) | |
160 | { | |
161 | struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); | |
162 | ssize_t count; | |
163 | ||
164 | if (!capable(CAP_NET_ADMIN)) | |
165 | return -EPERM; | |
166 | ||
167 | mutex_lock(&wldev->wl->mutex); | |
168 | ||
169 | if (wldev->short_preamble) | |
170 | count = snprintf(buf, PAGE_SIZE, "1 (Short Preamble" | |
171 | " enabled)\n"); | |
172 | else | |
173 | count = snprintf(buf, PAGE_SIZE, "0 (Short Preamble" | |
174 | " disabled)\n"); | |
175 | ||
176 | mutex_unlock(&wldev->wl->mutex); | |
177 | ||
178 | return count; | |
179 | } | |
180 | ||
181 | static ssize_t b43legacy_attr_preamble_store(struct device *dev, | |
182 | struct device_attribute *attr, | |
183 | const char *buf, size_t count) | |
184 | { | |
185 | struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); | |
186 | unsigned long flags; | |
187 | int value; | |
188 | ||
189 | if (!capable(CAP_NET_ADMIN)) | |
190 | return -EPERM; | |
191 | ||
192 | value = get_boolean(buf, count); | |
193 | if (value < 0) | |
194 | return value; | |
195 | mutex_lock(&wldev->wl->mutex); | |
196 | spin_lock_irqsave(&wldev->wl->irq_lock, flags); | |
197 | ||
198 | wldev->short_preamble = !!value; | |
199 | ||
200 | spin_unlock_irqrestore(&wldev->wl->irq_lock, flags); | |
201 | mutex_unlock(&wldev->wl->mutex); | |
202 | ||
203 | return count; | |
204 | } | |
205 | ||
206 | static DEVICE_ATTR(shortpreamble, 0644, | |
207 | b43legacy_attr_preamble_show, | |
208 | b43legacy_attr_preamble_store); | |
209 | ||
210 | int b43legacy_sysfs_register(struct b43legacy_wldev *wldev) | |
211 | { | |
212 | struct device *dev = wldev->dev->dev; | |
213 | int err; | |
214 | ||
215 | B43legacy_WARN_ON(b43legacy_status(wldev) != | |
216 | B43legacy_STAT_INITIALIZED); | |
217 | ||
218 | err = device_create_file(dev, &dev_attr_interference); | |
219 | if (err) | |
220 | goto out; | |
221 | err = device_create_file(dev, &dev_attr_shortpreamble); | |
222 | if (err) | |
223 | goto err_remove_interfmode; | |
224 | ||
225 | out: | |
226 | return err; | |
227 | err_remove_interfmode: | |
228 | device_remove_file(dev, &dev_attr_interference); | |
229 | goto out; | |
230 | } | |
231 | ||
232 | void b43legacy_sysfs_unregister(struct b43legacy_wldev *wldev) | |
233 | { | |
234 | struct device *dev = wldev->dev->dev; | |
235 | ||
236 | device_remove_file(dev, &dev_attr_shortpreamble); | |
237 | device_remove_file(dev, &dev_attr_interference); | |
238 | } |