Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 1 | /* |
| 2 | |
| 3 | Broadcom B43 wireless driver |
| 4 | |
| 5 | SYSFS support routines |
| 6 | |
| 7 | Copyright (c) 2006 Michael Buesch <mb@bu3sch.de> |
| 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 | |
Geert Uytterhoeven | 50e36eb | 2007-10-13 14:31:30 +0200 | [diff] [blame] | 26 | #include <linux/capability.h> |
| 27 | #include <linux/io.h> |
| 28 | |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 29 | #include "b43.h" |
| 30 | #include "sysfs.h" |
| 31 | #include "main.h" |
Michael Buesch | ef1a628 | 2008-08-27 18:53:02 +0200 | [diff] [blame] | 32 | #include "phy_common.h" |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 33 | |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 34 | #define GENERIC_FILESIZE 64 |
| 35 | |
| 36 | static int get_integer(const char *buf, size_t count) |
| 37 | { |
| 38 | char tmp[10 + 1] = { 0 }; |
| 39 | int ret = -EINVAL; |
| 40 | |
| 41 | if (count == 0) |
| 42 | goto out; |
| 43 | count = min(count, (size_t) 10); |
| 44 | memcpy(tmp, buf, count); |
| 45 | ret = simple_strtol(tmp, NULL, 10); |
| 46 | out: |
| 47 | return ret; |
| 48 | } |
| 49 | |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 50 | static ssize_t b43_attr_interfmode_show(struct device *dev, |
| 51 | struct device_attribute *attr, |
| 52 | char *buf) |
| 53 | { |
| 54 | struct b43_wldev *wldev = dev_to_b43_wldev(dev); |
| 55 | ssize_t count = 0; |
| 56 | |
| 57 | if (!capable(CAP_NET_ADMIN)) |
| 58 | return -EPERM; |
| 59 | |
| 60 | mutex_lock(&wldev->wl->mutex); |
| 61 | |
Michael Buesch | ef1a628 | 2008-08-27 18:53:02 +0200 | [diff] [blame] | 62 | if (wldev->phy.type != B43_PHYTYPE_G) { |
| 63 | mutex_unlock(&wldev->wl->mutex); |
| 64 | return -ENOSYS; |
| 65 | } |
| 66 | |
| 67 | switch (wldev->phy.g->interfmode) { |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 68 | case B43_INTERFMODE_NONE: |
| 69 | count = |
| 70 | snprintf(buf, PAGE_SIZE, |
| 71 | "0 (No Interference Mitigation)\n"); |
| 72 | break; |
| 73 | case B43_INTERFMODE_NONWLAN: |
| 74 | count = |
| 75 | snprintf(buf, PAGE_SIZE, |
| 76 | "1 (Non-WLAN Interference Mitigation)\n"); |
| 77 | break; |
| 78 | case B43_INTERFMODE_MANUALWLAN: |
| 79 | count = |
| 80 | snprintf(buf, PAGE_SIZE, |
| 81 | "2 (WLAN Interference Mitigation)\n"); |
| 82 | break; |
| 83 | default: |
| 84 | B43_WARN_ON(1); |
| 85 | } |
| 86 | |
| 87 | mutex_unlock(&wldev->wl->mutex); |
| 88 | |
| 89 | return count; |
| 90 | } |
| 91 | |
| 92 | static ssize_t b43_attr_interfmode_store(struct device *dev, |
| 93 | struct device_attribute *attr, |
| 94 | const char *buf, size_t count) |
| 95 | { |
| 96 | struct b43_wldev *wldev = dev_to_b43_wldev(dev); |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 97 | int err; |
| 98 | int mode; |
| 99 | |
| 100 | if (!capable(CAP_NET_ADMIN)) |
| 101 | return -EPERM; |
| 102 | |
| 103 | mode = get_integer(buf, count); |
| 104 | switch (mode) { |
| 105 | case 0: |
| 106 | mode = B43_INTERFMODE_NONE; |
| 107 | break; |
| 108 | case 1: |
| 109 | mode = B43_INTERFMODE_NONWLAN; |
| 110 | break; |
| 111 | case 2: |
| 112 | mode = B43_INTERFMODE_MANUALWLAN; |
| 113 | break; |
| 114 | case 3: |
| 115 | mode = B43_INTERFMODE_AUTOWLAN; |
| 116 | break; |
| 117 | default: |
| 118 | return -EINVAL; |
| 119 | } |
| 120 | |
| 121 | mutex_lock(&wldev->wl->mutex); |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 122 | |
Michael Buesch | ef1a628 | 2008-08-27 18:53:02 +0200 | [diff] [blame] | 123 | if (wldev->phy.ops->interf_mitigation) { |
| 124 | err = wldev->phy.ops->interf_mitigation(wldev, mode); |
| 125 | if (err) { |
| 126 | b43err(wldev->wl, "Interference Mitigation not " |
| 127 | "supported by device\n"); |
| 128 | } |
| 129 | } else |
| 130 | err = -ENOSYS; |
| 131 | |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 132 | mmiowb(); |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 133 | mutex_unlock(&wldev->wl->mutex); |
| 134 | |
| 135 | return err ? err : count; |
| 136 | } |
| 137 | |
| 138 | static DEVICE_ATTR(interference, 0644, |
| 139 | b43_attr_interfmode_show, b43_attr_interfmode_store); |
| 140 | |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 141 | int b43_sysfs_register(struct b43_wldev *wldev) |
| 142 | { |
Rafał Miłecki | a18c715 | 2011-05-18 02:06:40 +0200 | [diff] [blame^] | 143 | struct device *dev = wldev->dev->dev; |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 144 | |
| 145 | B43_WARN_ON(b43_status(wldev) != B43_STAT_INITIALIZED); |
| 146 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 147 | return device_create_file(dev, &dev_attr_interference); |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | void b43_sysfs_unregister(struct b43_wldev *wldev) |
| 151 | { |
Rafał Miłecki | a18c715 | 2011-05-18 02:06:40 +0200 | [diff] [blame^] | 152 | struct device *dev = wldev->dev->dev; |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 153 | |
Michael Buesch | e4d6b79 | 2007-09-18 15:39:42 -0400 | [diff] [blame] | 154 | device_remove_file(dev, &dev_attr_interference); |
| 155 | } |