-/*
-
- Broadcom B43 wireless driver
-
- SYSFS support routines
-
- Copyright (c) 2006 Michael Buesch <mb@bu3sch.de>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING. If not, write to
- the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
- Boston, MA 02110-1301, USA.
-
-*/
-
-#include "b43.h"
-#include "sysfs.h"
-#include "main.h"
-#include "phy.h"
-
-#include <linux/capability.h>
-
-#define GENERIC_FILESIZE 64
-
-static int get_integer(const char *buf, size_t count)
-{
- char tmp[10 + 1] = { 0 };
- int ret = -EINVAL;
-
- if (count == 0)
- goto out;
- count = min(count, (size_t) 10);
- memcpy(tmp, buf, count);
- ret = simple_strtol(tmp, NULL, 10);
- out:
- return ret;
-}
-
-static int get_boolean(const char *buf, size_t count)
-{
- if (count != 0) {
- if (buf[0] == '1')
- return 1;
- if (buf[0] == '0')
- return 0;
- if (count >= 4 && memcmp(buf, "true", 4) == 0)
- return 1;
- if (count >= 5 && memcmp(buf, "false", 5) == 0)
- return 0;
- if (count >= 3 && memcmp(buf, "yes", 3) == 0)
- return 1;
- if (count >= 2 && memcmp(buf, "no", 2) == 0)
- return 0;
- if (count >= 2 && memcmp(buf, "on", 2) == 0)
- return 1;
- if (count >= 3 && memcmp(buf, "off", 3) == 0)
- return 0;
- }
- return -EINVAL;
-}
-
-static ssize_t b43_attr_interfmode_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct b43_wldev *wldev = dev_to_b43_wldev(dev);
- ssize_t count = 0;
-
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
-
- mutex_lock(&wldev->wl->mutex);
-
- switch (wldev->phy.interfmode) {
- case B43_INTERFMODE_NONE:
- count =
- snprintf(buf, PAGE_SIZE,
- "0 (No Interference Mitigation)\n");
- break;
- case B43_INTERFMODE_NONWLAN:
- count =
- snprintf(buf, PAGE_SIZE,
- "1 (Non-WLAN Interference Mitigation)\n");
- break;
- case B43_INTERFMODE_MANUALWLAN:
- count =
- snprintf(buf, PAGE_SIZE,
- "2 (WLAN Interference Mitigation)\n");
- break;
- default:
- B43_WARN_ON(1);
- }
-
- mutex_unlock(&wldev->wl->mutex);
-
- return count;
-}
-
-static ssize_t b43_attr_interfmode_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct b43_wldev *wldev = dev_to_b43_wldev(dev);
- unsigned long flags;
- int err;
- int mode;
-
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
-
- mode = get_integer(buf, count);
- switch (mode) {
- case 0:
- mode = B43_INTERFMODE_NONE;
- break;
- case 1:
- mode = B43_INTERFMODE_NONWLAN;
- break;
- case 2:
- mode = B43_INTERFMODE_MANUALWLAN;
- break;
- case 3:
- mode = B43_INTERFMODE_AUTOWLAN;
- break;
- default:
- return -EINVAL;
- }
-
- mutex_lock(&wldev->wl->mutex);
- spin_lock_irqsave(&wldev->wl->irq_lock, flags);
-
- err = b43_radio_set_interference_mitigation(wldev, mode);
- if (err) {
- b43err(wldev->wl, "Interference Mitigation not "
- "supported by device\n");
- }
- mmiowb();
- spin_unlock_irqrestore(&wldev->wl->irq_lock, flags);
- mutex_unlock(&wldev->wl->mutex);
-
- return err ? err : count;
-}
-
-static DEVICE_ATTR(interference, 0644,
- b43_attr_interfmode_show, b43_attr_interfmode_store);
-
-static ssize_t b43_attr_preamble_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct b43_wldev *wldev = dev_to_b43_wldev(dev);
- ssize_t count;
-
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
-
- mutex_lock(&wldev->wl->mutex);
-
- if (wldev->short_preamble)
- count =
- snprintf(buf, PAGE_SIZE, "1 (Short Preamble enabled)\n");
- else
- count =
- snprintf(buf, PAGE_SIZE, "0 (Short Preamble disabled)\n");
-
- mutex_unlock(&wldev->wl->mutex);
-
- return count;
-}
-
-static ssize_t b43_attr_preamble_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct b43_wldev *wldev = dev_to_b43_wldev(dev);
- unsigned long flags;
- int value;
-
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
-
- value = get_boolean(buf, count);
- if (value < 0)
- return value;
- mutex_lock(&wldev->wl->mutex);
- spin_lock_irqsave(&wldev->wl->irq_lock, flags);
-
- wldev->short_preamble = !!value;
-
- spin_unlock_irqrestore(&wldev->wl->irq_lock, flags);
- mutex_unlock(&wldev->wl->mutex);
-
- return count;
-}
-
-static DEVICE_ATTR(shortpreamble, 0644,
- b43_attr_preamble_show, b43_attr_preamble_store);
-
-int b43_sysfs_register(struct b43_wldev *wldev)
-{
- struct device *dev = wldev->dev->dev;
- int err;
-
- B43_WARN_ON(b43_status(wldev) != B43_STAT_INITIALIZED);
-
- err = device_create_file(dev, &dev_attr_interference);
- if (err)
- goto out;
- err = device_create_file(dev, &dev_attr_shortpreamble);
- if (err)
- goto err_remove_interfmode;
-
- out:
- return err;
- err_remove_interfmode:
- device_remove_file(dev, &dev_attr_interference);
- goto out;
-}
-
-void b43_sysfs_unregister(struct b43_wldev *wldev)
-{
- struct device *dev = wldev->dev->dev;
-
- device_remove_file(dev, &dev_attr_shortpreamble);
- device_remove_file(dev, &dev_attr_interference);
-}
projects / openwrt.git / blobdiff