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Diffstat (limited to 'drivers/net/wireless/broadcom/b43/sysfs.c')
-rw-r--r--drivers/net/wireless/broadcom/b43/sysfs.c141
1 files changed, 141 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/b43/sysfs.c b/drivers/net/wireless/broadcom/b43/sysfs.c
new file mode 100644
index 000000000..0679d1329
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43/sysfs.c
@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+
+ Broadcom B43 wireless driver
+
+ SYSFS support routines
+
+ Copyright (c) 2006 Michael Buesch <m@bues.ch>
+
+
+*/
+
+#include <linux/capability.h>
+#include <linux/io.h>
+
+#include "b43.h"
+#include "sysfs.h"
+#include "main.h"
+#include "phy_common.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_t(size_t, count, 10);
+ memcpy(tmp, buf, count);
+ ret = simple_strtol(tmp, NULL, 10);
+ out:
+ return ret;
+}
+
+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);
+
+ if (wldev->phy.type != B43_PHYTYPE_G) {
+ mutex_unlock(&wldev->wl->mutex);
+ return -ENOSYS;
+ }
+
+ switch (wldev->phy.g->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);
+ 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);
+
+ if (wldev->phy.ops->interf_mitigation) {
+ err = wldev->phy.ops->interf_mitigation(wldev, mode);
+ if (err) {
+ b43err(wldev->wl, "Interference Mitigation not "
+ "supported by device\n");
+ }
+ } else
+ err = -ENOSYS;
+
+ mutex_unlock(&wldev->wl->mutex);
+
+ return err ? err : count;
+}
+
+static DEVICE_ATTR(interference, 0644,
+ b43_attr_interfmode_show, b43_attr_interfmode_store);
+
+int b43_sysfs_register(struct b43_wldev *wldev)
+{
+ struct device *dev = wldev->dev->dev;
+
+ B43_WARN_ON(b43_status(wldev) != B43_STAT_INITIALIZED);
+
+ return device_create_file(dev, &dev_attr_interference);
+}
+
+void b43_sysfs_unregister(struct b43_wldev *wldev)
+{
+ struct device *dev = wldev->dev->dev;
+
+ device_remove_file(dev, &dev_attr_interference);
+}