diff options
Diffstat (limited to 'drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c')
| -rw-r--r-- | drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c b/drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c new file mode 100644 index 00000000000..c44d890b949 --- /dev/null +++ b/drivers/net/wireless/bcm43xx/bcm43xx_sysfs.c @@ -0,0 +1,322 @@ +/* + + Broadcom BCM43xx wireless driver + + SYSFS support routines + + Copyright (c) 2006 Michael Buesch <mbuesch@freenet.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 "bcm43xx_sysfs.h" +#include "bcm43xx.h" +#include "bcm43xx_main.h" +#include "bcm43xx_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 bcm43xx_attr_sprom_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_sprom); + u16 *sprom; + unsigned long flags; + int i, err; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + assert(BCM43xx_SPROM_SIZE * sizeof(u16) <= PAGE_SIZE); + sprom = kmalloc(BCM43xx_SPROM_SIZE * sizeof(*sprom), + GFP_KERNEL); + if (!sprom) + return -ENOMEM; + bcm43xx_lock_mmio(bcm, flags); + assert(bcm->initialized); + err = bcm43xx_sprom_read(bcm, sprom); + if (!err) { + for (i = 0; i < BCM43xx_SPROM_SIZE; i++) { + buf[i * 2] = sprom[i] & 0x00FF; + buf[i * 2 + 1] = (sprom[i] & 0xFF00) >> 8; + } + } + bcm43xx_unlock_mmio(bcm, flags); + kfree(sprom); + + return err ? err : BCM43xx_SPROM_SIZE * sizeof(u16); +} + +static ssize_t bcm43xx_attr_sprom_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_sprom); + u16 *sprom; + unsigned long flags; + int i, err; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + if (count != BCM43xx_SPROM_SIZE * sizeof(u16)) + return -EINVAL; + sprom = kmalloc(BCM43xx_SPROM_SIZE * sizeof(*sprom), + GFP_KERNEL); + if (!sprom) + return -ENOMEM; + for (i = 0; i < BCM43xx_SPROM_SIZE; i++) { + sprom[i] = buf[i * 2] & 0xFF; + sprom[i] |= ((u16)(buf[i * 2 + 1] & 0xFF)) << 8; + } + bcm43xx_lock_mmio(bcm, flags); + assert(bcm->initialized); + err = bcm43xx_sprom_write(bcm, sprom); + bcm43xx_unlock_mmio(bcm, flags); + kfree(sprom); + + return err ? err : count; + +} + +static ssize_t bcm43xx_attr_interfmode_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_interfmode); + unsigned long flags; + int err; + ssize_t count = 0; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + bcm43xx_lock(bcm, flags); + assert(bcm->initialized); + + switch (bcm43xx_current_radio(bcm)->interfmode) { + case BCM43xx_RADIO_INTERFMODE_NONE: + count = snprintf(buf, PAGE_SIZE, "0 (No Interference Mitigation)\n"); + break; + case BCM43xx_RADIO_INTERFMODE_NONWLAN: + count = snprintf(buf, PAGE_SIZE, "1 (Non-WLAN Interference Mitigation)\n"); + break; + case BCM43xx_RADIO_INTERFMODE_MANUALWLAN: + count = snprintf(buf, PAGE_SIZE, "2 (WLAN Interference Mitigation)\n"); + break; + default: + assert(0); + } + err = 0; + + bcm43xx_unlock(bcm, flags); + + return err ? err : count; + +} + +static ssize_t bcm43xx_attr_interfmode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_interfmode); + unsigned long flags; + int err; + int mode; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + mode = get_integer(buf, count); + switch (mode) { + case 0: + mode = BCM43xx_RADIO_INTERFMODE_NONE; + break; + case 1: + mode = BCM43xx_RADIO_INTERFMODE_NONWLAN; + break; + case 2: + mode = BCM43xx_RADIO_INTERFMODE_MANUALWLAN; + break; + case 3: + mode = BCM43xx_RADIO_INTERFMODE_AUTOWLAN; + break; + default: + return -EINVAL; + } + + bcm43xx_lock_mmio(bcm, flags); + assert(bcm->initialized); + + err = bcm43xx_radio_set_interference_mitigation(bcm, mode); + if (err) { + printk(KERN_ERR PFX "Interference Mitigation not " + "supported by device\n"); + } + + bcm43xx_unlock_mmio(bcm, flags); + + return err ? err : count; +} + +static ssize_t bcm43xx_attr_preamble_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_preamble); + unsigned long flags; + int err; + ssize_t count; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + bcm43xx_lock(bcm, flags); + assert(bcm->initialized); + + if (bcm->short_preamble) + count = snprintf(buf, PAGE_SIZE, "1 (Short Preamble enabled)\n"); + else + count = snprintf(buf, PAGE_SIZE, "0 (Short Preamble disabled)\n"); + + err = 0; + bcm43xx_unlock(bcm, flags); + + return err ? err : count; +} + +static ssize_t bcm43xx_attr_preamble_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct bcm43xx_private *bcm = devattr_to_bcm(attr, attr_preamble); + unsigned long flags; + int err; + int value; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + value = get_boolean(buf, count); + if (value < 0) + return value; + bcm43xx_lock(bcm, flags); + assert(bcm->initialized); + + bcm->short_preamble = !!value; + + err = 0; + bcm43xx_unlock(bcm, flags); + + return err ? err : count; +} + +int bcm43xx_sysfs_register(struct bcm43xx_private *bcm) +{ + struct device *dev = &bcm->pci_dev->dev; + struct bcm43xx_sysfs *sysfs = &bcm->sysfs; + int err; + + assert(bcm->initialized); + + sysfs->attr_sprom.attr.name = "sprom"; + sysfs->attr_sprom.attr.owner = THIS_MODULE; + sysfs->attr_sprom.attr.mode = 0600; + sysfs->attr_sprom.show = bcm43xx_attr_sprom_show; + sysfs->attr_sprom.store = bcm43xx_attr_sprom_store; + err = device_create_file(dev, &sysfs->attr_sprom); + if (err) + goto out; + + sysfs->attr_interfmode.attr.name = "interference"; + sysfs->attr_interfmode.attr.owner = THIS_MODULE; + sysfs->attr_interfmode.attr.mode = 0600; + sysfs->attr_interfmode.show = bcm43xx_attr_interfmode_show; + sysfs->attr_interfmode.store = bcm43xx_attr_interfmode_store; + err = device_create_file(dev, &sysfs->attr_interfmode); + if (err) + goto err_remove_sprom; + + sysfs->attr_preamble.attr.name = "shortpreamble"; + sysfs->attr_preamble.attr.owner = THIS_MODULE; + sysfs->attr_preamble.attr.mode = 0600; + sysfs->attr_preamble.show = bcm43xx_attr_preamble_show; + sysfs->attr_preamble.store = bcm43xx_attr_preamble_store; + err = device_create_file(dev, &sysfs->attr_preamble); + if (err) + goto err_remove_interfmode; + +out: + return err; +err_remove_interfmode: + device_remove_file(dev, &sysfs->attr_interfmode); +err_remove_sprom: + device_remove_file(dev, &sysfs->attr_sprom); + goto out; +} + +void bcm43xx_sysfs_unregister(struct bcm43xx_private *bcm) +{ + struct device *dev = &bcm->pci_dev->dev; + struct bcm43xx_sysfs *sysfs = &bcm->sysfs; + + device_remove_file(dev, &sysfs->attr_preamble); + device_remove_file(dev, &sysfs->attr_interfmode); + device_remove_file(dev, &sysfs->attr_sprom); +} |