[B43LEGACY]: add mac80211-based driver for legacy BCM43xx devices

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 238 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43legacy/sysfs.c b/drivers/net/wireless/b43legacy/sysfs.c
new file mode 100644
index 000000000000..56c384fa9b1f
--- /dev/null
+++ b/drivers/net/wireless/b43legacy/sysfs.c
@@ -0,0 +1,238 @@
+/*
+
+  Broadcom B43legacy 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 "sysfs.h"
+#include "b43legacy.h"
+#include "main.h"
+#include "phy.h"
+#include "radio.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 b43legacy_attr_interfmode_show(struct device *dev,
+                                              struct device_attribute *attr,
+                                              char *buf)
+{
+        struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev);
+        ssize_t count = 0;
+
+        if (!capable(CAP_NET_ADMIN))
+                return -EPERM;
+
+        mutex_lock(&wldev->wl->mutex);
+
+        switch (wldev->phy.interfmode) {
+        case B43legacy_INTERFMODE_NONE:
+                count = snprintf(buf, PAGE_SIZE, "0 (No Interference"
+                                 " Mitigation)\n");
+                break;
+        case B43legacy_INTERFMODE_NONWLAN:
+                count = snprintf(buf, PAGE_SIZE, "1 (Non-WLAN Interference"
+                                 " Mitigation)\n");
+                break;
+        case B43legacy_INTERFMODE_MANUALWLAN:
+                count = snprintf(buf, PAGE_SIZE, "2 (WLAN Interference"
+                                 " Mitigation)\n");
+                break;
+        default:
+                B43legacy_WARN_ON(1);
+        }
+
+        mutex_unlock(&wldev->wl->mutex);
+
+        return count;
+}
+
+static ssize_t b43legacy_attr_interfmode_store(struct device *dev,
+                                               struct device_attribute *attr,
+                                               const char *buf, size_t count)
+{
+        struct b43legacy_wldev *wldev = dev_to_b43legacy_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 = B43legacy_INTERFMODE_NONE;
+                break;
+        case 1:
+                mode = B43legacy_INTERFMODE_NONWLAN;
+                break;
+        case 2:
+                mode = B43legacy_INTERFMODE_MANUALWLAN;
+                break;
+        case 3:
+                mode = B43legacy_INTERFMODE_AUTOWLAN;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        mutex_lock(&wldev->wl->mutex);
+        spin_lock_irqsave(&wldev->wl->irq_lock, flags);
+
+        err = b43legacy_radio_set_interference_mitigation(wldev, mode);
+        if (err)
+                b43legacyerr(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,
+                   b43legacy_attr_interfmode_show,
+                   b43legacy_attr_interfmode_store);
+
+static ssize_t b43legacy_attr_preamble_show(struct device *dev,
+                                            struct device_attribute *attr,
+                                            char *buf)
+{
+        struct b43legacy_wldev *wldev = dev_to_b43legacy_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 b43legacy_attr_preamble_store(struct device *dev,
+                                             struct device_attribute *attr,
+                                             const char *buf, size_t count)
+{
+        struct b43legacy_wldev *wldev = dev_to_b43legacy_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,
+                   b43legacy_attr_preamble_show,
+                   b43legacy_attr_preamble_store);
+
+int b43legacy_sysfs_register(struct b43legacy_wldev *wldev)
+{
+        struct device *dev = wldev->dev->dev;
+        int err;
+
+        B43legacy_WARN_ON(b43legacy_status(wldev) !=
+                          B43legacy_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 b43legacy_sysfs_unregister(struct b43legacy_wldev *wldev)
+{
+        struct device *dev = wldev->dev->dev;
+
+        device_remove_file(dev, &dev_attr_shortpreamble);
+        device_remove_file(dev, &dev_attr_interference);
+}