Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 1 | /* |
| 2 | |
| 3 | Broadcom BCM43xx wireless driver |
| 4 | |
| 5 | SYSFS support routines |
| 6 | |
| 7 | Copyright (c) 2006 Michael Buesch <mbuesch@freenet.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 | |
| 26 | #include "bcm43xx_sysfs.h" |
| 27 | #include "bcm43xx.h" |
| 28 | #include "bcm43xx_main.h" |
| 29 | #include "bcm43xx_radio.h" |
| 30 | |
| 31 | #include <linux/capability.h> |
| 32 | |
| 33 | |
| 34 | #define GENERIC_FILESIZE 64 |
| 35 | |
| 36 | |
| 37 | static int get_integer(const char *buf, size_t count) |
| 38 | { |
| 39 | char tmp[10 + 1] = { 0 }; |
| 40 | int ret = -EINVAL; |
| 41 | |
| 42 | if (count == 0) |
| 43 | goto out; |
| 44 | count = min(count, (size_t)10); |
| 45 | memcpy(tmp, buf, count); |
| 46 | ret = simple_strtol(tmp, NULL, 10); |
| 47 | out: |
| 48 | return ret; |
| 49 | } |
| 50 | |
| 51 | static int get_boolean(const char *buf, size_t count) |
| 52 | { |
| 53 | if (count != 0) { |
| 54 | if (buf[0] == '1') |
| 55 | return 1; |
| 56 | if (buf[0] == '0') |
| 57 | return 0; |
| 58 | if (count >= 4 && memcmp(buf, "true", 4) == 0) |
| 59 | return 1; |
| 60 | if (count >= 5 && memcmp(buf, "false", 5) == 0) |
| 61 | return 0; |
| 62 | if (count >= 3 && memcmp(buf, "yes", 3) == 0) |
| 63 | return 1; |
| 64 | if (count >= 2 && memcmp(buf, "no", 2) == 0) |
| 65 | return 0; |
| 66 | if (count >= 2 && memcmp(buf, "on", 2) == 0) |
| 67 | return 1; |
| 68 | if (count >= 3 && memcmp(buf, "off", 3) == 0) |
| 69 | return 0; |
| 70 | } |
| 71 | return -EINVAL; |
| 72 | } |
| 73 | |
| 74 | static ssize_t bcm43xx_attr_sprom_show(struct device *dev, |
| 75 | struct device_attribute *attr, |
| 76 | char *buf) |
| 77 | { |
| 78 | struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_sprom); |
| 79 | u16 *sprom; |
| 80 | unsigned long flags; |
| 81 | int i, err; |
| 82 | |
| 83 | if (!capable(CAP_NET_ADMIN)) |
| 84 | return -EPERM; |
| 85 | |
| 86 | assert(BCM43xx_SPROM_SIZE * sizeof(u16) <= PAGE_SIZE); |
| 87 | sprom = kmalloc(BCM43xx_SPROM_SIZE * sizeof(*sprom), |
| 88 | GFP_KERNEL); |
| 89 | if (!sprom) |
| 90 | return -ENOMEM; |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 91 | bcm43xx_lock_mmio(bcm, flags); |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 92 | assert(bcm->initialized); |
| 93 | err = bcm43xx_sprom_read(bcm, sprom); |
| 94 | if (!err) { |
| 95 | for (i = 0; i < BCM43xx_SPROM_SIZE; i++) { |
| 96 | buf[i * 2] = sprom[i] & 0x00FF; |
| 97 | buf[i * 2 + 1] = (sprom[i] & 0xFF00) >> 8; |
| 98 | } |
| 99 | } |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 100 | bcm43xx_unlock_mmio(bcm, flags); |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 101 | kfree(sprom); |
| 102 | |
| 103 | return err ? err : BCM43xx_SPROM_SIZE * sizeof(u16); |
| 104 | } |
| 105 | |
| 106 | static ssize_t bcm43xx_attr_sprom_store(struct device *dev, |
| 107 | struct device_attribute *attr, |
| 108 | const char *buf, size_t count) |
| 109 | { |
| 110 | struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_sprom); |
| 111 | u16 *sprom; |
| 112 | unsigned long flags; |
| 113 | int i, err; |
| 114 | |
| 115 | if (!capable(CAP_NET_ADMIN)) |
| 116 | return -EPERM; |
| 117 | |
| 118 | if (count != BCM43xx_SPROM_SIZE * sizeof(u16)) |
| 119 | return -EINVAL; |
| 120 | sprom = kmalloc(BCM43xx_SPROM_SIZE * sizeof(*sprom), |
| 121 | GFP_KERNEL); |
| 122 | if (!sprom) |
| 123 | return -ENOMEM; |
| 124 | for (i = 0; i < BCM43xx_SPROM_SIZE; i++) { |
| 125 | sprom[i] = buf[i * 2] & 0xFF; |
| 126 | sprom[i] |= ((u16)(buf[i * 2 + 1] & 0xFF)) << 8; |
| 127 | } |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 128 | bcm43xx_lock_mmio(bcm, flags); |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 129 | assert(bcm->initialized); |
| 130 | err = bcm43xx_sprom_write(bcm, sprom); |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 131 | bcm43xx_unlock_mmio(bcm, flags); |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 132 | kfree(sprom); |
| 133 | |
| 134 | return err ? err : count; |
| 135 | |
| 136 | } |
| 137 | |
| 138 | static ssize_t bcm43xx_attr_interfmode_show(struct device *dev, |
| 139 | struct device_attribute *attr, |
| 140 | char *buf) |
| 141 | { |
| 142 | struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_interfmode); |
| 143 | unsigned long flags; |
| 144 | int err; |
| 145 | ssize_t count = 0; |
| 146 | |
| 147 | if (!capable(CAP_NET_ADMIN)) |
| 148 | return -EPERM; |
| 149 | |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 150 | bcm43xx_lock(bcm, flags); |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 151 | assert(bcm->initialized); |
| 152 | |
Michael Buesch | e9357c0 | 2006-03-13 19:27:34 +0100 | [diff] [blame] | 153 | switch (bcm43xx_current_radio(bcm)->interfmode) { |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 154 | case BCM43xx_RADIO_INTERFMODE_NONE: |
| 155 | count = snprintf(buf, PAGE_SIZE, "0 (No Interference Mitigation)\n"); |
| 156 | break; |
| 157 | case BCM43xx_RADIO_INTERFMODE_NONWLAN: |
| 158 | count = snprintf(buf, PAGE_SIZE, "1 (Non-WLAN Interference Mitigation)\n"); |
| 159 | break; |
| 160 | case BCM43xx_RADIO_INTERFMODE_MANUALWLAN: |
| 161 | count = snprintf(buf, PAGE_SIZE, "2 (WLAN Interference Mitigation)\n"); |
| 162 | break; |
| 163 | default: |
| 164 | assert(0); |
| 165 | } |
| 166 | err = 0; |
| 167 | |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 168 | bcm43xx_unlock(bcm, flags); |
| 169 | |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 170 | return err ? err : count; |
| 171 | |
| 172 | } |
| 173 | |
| 174 | static ssize_t bcm43xx_attr_interfmode_store(struct device *dev, |
| 175 | struct device_attribute *attr, |
| 176 | const char *buf, size_t count) |
| 177 | { |
| 178 | struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_interfmode); |
| 179 | unsigned long flags; |
| 180 | int err; |
| 181 | int mode; |
| 182 | |
| 183 | if (!capable(CAP_NET_ADMIN)) |
| 184 | return -EPERM; |
| 185 | |
| 186 | mode = get_integer(buf, count); |
| 187 | switch (mode) { |
| 188 | case 0: |
| 189 | mode = BCM43xx_RADIO_INTERFMODE_NONE; |
| 190 | break; |
| 191 | case 1: |
| 192 | mode = BCM43xx_RADIO_INTERFMODE_NONWLAN; |
| 193 | break; |
| 194 | case 2: |
| 195 | mode = BCM43xx_RADIO_INTERFMODE_MANUALWLAN; |
| 196 | break; |
| 197 | case 3: |
| 198 | mode = BCM43xx_RADIO_INTERFMODE_AUTOWLAN; |
| 199 | break; |
| 200 | default: |
| 201 | return -EINVAL; |
| 202 | } |
| 203 | |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 204 | bcm43xx_lock_mmio(bcm, flags); |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 205 | assert(bcm->initialized); |
| 206 | |
| 207 | err = bcm43xx_radio_set_interference_mitigation(bcm, mode); |
| 208 | if (err) { |
| 209 | printk(KERN_ERR PFX "Interference Mitigation not " |
| 210 | "supported by device\n"); |
| 211 | } |
| 212 | |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 213 | bcm43xx_unlock_mmio(bcm, flags); |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 214 | |
| 215 | return err ? err : count; |
| 216 | } |
| 217 | |
| 218 | static ssize_t bcm43xx_attr_preamble_show(struct device *dev, |
| 219 | struct device_attribute *attr, |
| 220 | char *buf) |
| 221 | { |
| 222 | struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_preamble); |
| 223 | unsigned long flags; |
| 224 | int err; |
| 225 | ssize_t count; |
| 226 | |
| 227 | if (!capable(CAP_NET_ADMIN)) |
| 228 | return -EPERM; |
| 229 | |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 230 | bcm43xx_lock(bcm, flags); |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 231 | assert(bcm->initialized); |
| 232 | |
| 233 | if (bcm->short_preamble) |
| 234 | count = snprintf(buf, PAGE_SIZE, "1 (Short Preamble enabled)\n"); |
| 235 | else |
| 236 | count = snprintf(buf, PAGE_SIZE, "0 (Short Preamble disabled)\n"); |
| 237 | |
| 238 | err = 0; |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 239 | bcm43xx_unlock(bcm, flags); |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 240 | |
| 241 | return err ? err : count; |
| 242 | } |
| 243 | |
| 244 | static ssize_t bcm43xx_attr_preamble_store(struct device *dev, |
| 245 | struct device_attribute *attr, |
| 246 | const char *buf, size_t count) |
| 247 | { |
| 248 | struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_preamble); |
| 249 | unsigned long flags; |
| 250 | int err; |
| 251 | int value; |
| 252 | |
| 253 | if (!capable(CAP_NET_ADMIN)) |
| 254 | return -EPERM; |
| 255 | |
| 256 | value = get_boolean(buf, count); |
| 257 | if (value < 0) |
| 258 | return value; |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 259 | bcm43xx_lock(bcm, flags); |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 260 | assert(bcm->initialized); |
| 261 | |
| 262 | bcm->short_preamble = !!value; |
| 263 | |
| 264 | err = 0; |
Michael Buesch | efccb64 | 2006-03-11 13:39:14 +0100 | [diff] [blame] | 265 | bcm43xx_unlock(bcm, flags); |
Michael Buesch | 367f899 | 2006-02-28 15:32:19 +0100 | [diff] [blame] | 266 | |
| 267 | return err ? err : count; |
| 268 | } |
| 269 | |
| 270 | int bcm43xx_sysfs_register(struct bcm43xx_private *bcm) |
| 271 | { |
| 272 | struct device *dev = &bcm->pci_dev->dev; |
| 273 | struct bcm43xx_sysfs *sysfs = &bcm->sysfs; |
| 274 | int err; |
| 275 | |
| 276 | assert(bcm->initialized); |
| 277 | |
| 278 | sysfs->attr_sprom.attr.name = "sprom"; |
| 279 | sysfs->attr_sprom.attr.owner = THIS_MODULE; |
| 280 | sysfs->attr_sprom.attr.mode = 0600; |
| 281 | sysfs->attr_sprom.show = bcm43xx_attr_sprom_show; |
| 282 | sysfs->attr_sprom.store = bcm43xx_attr_sprom_store; |
| 283 | err = device_create_file(dev, &sysfs->attr_sprom); |
| 284 | if (err) |
| 285 | goto out; |
| 286 | |
| 287 | sysfs->attr_interfmode.attr.name = "interference"; |
| 288 | sysfs->attr_interfmode.attr.owner = THIS_MODULE; |
| 289 | sysfs->attr_interfmode.attr.mode = 0600; |
| 290 | sysfs->attr_interfmode.show = bcm43xx_attr_interfmode_show; |
| 291 | sysfs->attr_interfmode.store = bcm43xx_attr_interfmode_store; |
| 292 | err = device_create_file(dev, &sysfs->attr_interfmode); |
| 293 | if (err) |
| 294 | goto err_remove_sprom; |
| 295 | |
| 296 | sysfs->attr_preamble.attr.name = "shortpreamble"; |
| 297 | sysfs->attr_preamble.attr.owner = THIS_MODULE; |
| 298 | sysfs->attr_preamble.attr.mode = 0600; |
| 299 | sysfs->attr_preamble.show = bcm43xx_attr_preamble_show; |
| 300 | sysfs->attr_preamble.store = bcm43xx_attr_preamble_store; |
| 301 | err = device_create_file(dev, &sysfs->attr_preamble); |
| 302 | if (err) |
| 303 | goto err_remove_interfmode; |
| 304 | |
| 305 | out: |
| 306 | return err; |
| 307 | err_remove_interfmode: |
| 308 | device_remove_file(dev, &sysfs->attr_interfmode); |
| 309 | err_remove_sprom: |
| 310 | device_remove_file(dev, &sysfs->attr_sprom); |
| 311 | goto out; |
| 312 | } |
| 313 | |
| 314 | void bcm43xx_sysfs_unregister(struct bcm43xx_private *bcm) |
| 315 | { |
| 316 | struct device *dev = &bcm->pci_dev->dev; |
| 317 | struct bcm43xx_sysfs *sysfs = &bcm->sysfs; |
| 318 | |
| 319 | device_remove_file(dev, &sysfs->attr_preamble); |
| 320 | device_remove_file(dev, &sysfs->attr_interfmode); |
| 321 | device_remove_file(dev, &sysfs->attr_sprom); |
| 322 | } |