Survey stats such as channel busy time, rx busy time
and noise are collected when sw_scan starts for every
switched new channel. This happens till sw_scan stops.

All the collected stats are shared up when get_survey()
is called.

This implements support for ACS feature from Hostapd.
Signed-off-by: NYogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: NNishant Sarmukadam <nishants@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Implement sw_scan start and stop callbacks.
Reset BBP registers for channel, RX busy and
average noise stats which clear on read.
Signed-off-by: NYogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: NNishant Sarmukadam <nishants@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Adding AP firmware command to access BBP
regs. This will be used for retrieving
different counters CCA/RX needed for ACS
Signed-off-by: NYogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: NNishant Sarmukadam <nishants@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Function ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan} have been
replaced with ieee80211_{channel_to_frequency, frequency_to_channel}.

There should be no users of the two functions now. So remove them.

Cc: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: NZhao, Gang <gamerh2o@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Replace ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan} with more
generic ieee80211_{channel_to_frequency, frequency_to_channel}.

File <net/cfg80211.h> has already been included. It's safe to use
IEEE80211_BAND_2GHZ here.

This change is a preparation for the removal of function
ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan}.
Signed-off-by: NZhao, Gang <gamerh2o@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Replace ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan} with more
generic ieee80211_{channel_to_frequency, frequency_to_channel}.

Function ieee80211_frequency_to_channel() will return 0 if frequency
is not correctly provided, so no need to set channel to 0 explicitly.

Include <net/cfg80211.h> for the defination of IEEE80211_BAND_2GHZ.
Because <net/cfg80211.h> includes <linux/ieee80211.h>, so we can
replace <linux/ieee80211.h> with <net/cfg80211.h>.

This change is a preparation for the removal of function
ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan}.
Signed-off-by: NZhao, Gang <gamerh2o@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Replace ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan} with more
generic ieee80211_{channel_to_frequency, frequency_to_channel}.

File <net/cfg80211.h> has already been included. It's safe to use
IEEE80211_BAND_2GHZ here.

This change is a preparation for the removal of function
ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan}.

Cc: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: NZhao, Gang <gamerh2o@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Replace ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan} with more
generic ieee80211_{channel_to_frequency, frequency_to_channel}.

Include <net/cfg80211.h> for the defination of IEEE80211_BAND_2GHZ.
Because <net/cfg80211.h> includes <linux/ieee80211.h>, so we can
replace <linux/ieee80211.h> with <net/cfg80211.h>.

This change is a preparation for the removal of function
ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan}.

Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: NZhao, Gang <gamerh2o@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Replace ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan} with more
generic ieee80211_{channel_to_frequency, frequency_to_channel}.

Include <net/cfg80211.h> for the defination of IEEE80211_BAND_2GHZ.
Because <net/cfg80211.h> includes <linux/ieee80211.h>, so we can
replace <linux/ieee80211.h> with <net/cfg80211.h>.

This change is a preparation for the removal of function
ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan}.

Cc: Simon Kelley <simon@thekelleys.org.uk>
Signed-off-by: NZhao, Gang <gamerh2o@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Replace ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan} with more
generic ieee80211_{channel_to_frequency, frequency_to_channel}.

Include <net/cfg80211.h> for the defination of IEEE80211_BAND_2GHZ.
Because <net/cfg80211.h> includes <linux/ieee80211.h>, so we can
replace <linux/ieee80211.h> with <net/cfg80211.h>.

This change is a preparation for the removal of function
ieee80211_{dsss_chan_to_freq, freq_to_dsss_chan}.
Signed-off-by: NZhao, Gang <gamerh2o@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Certain HW options (TX packet retry count, CW configuration and
TX power configuration) can be specified in both the TX packet
descriptor and also into HW "global" registers.

The HW is thus configured to honour the global register or the
TX descriptor field depending by the case.

This patch adds few comments that hopefully clarify in which cases
the driver uses one method and in which cases it uses the other.
Signed-off-by: NAndrea Merello <andrea.merello@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

During driver initialization, some skbs are preallocated for RX.
Currenly if the allocation fails, the driver's allocation routine
exits immediatly but it will return zero (success) anyway.

In this way the driver will continue initialization with buggy
pointers around.

This patch makes the driver's allocation routine to return
an error value and to print a complaint message when skb allocation
fails.
In this way its caller will not go further, avoinding the driver to
successfully load, and preventing dereferencing buggy pointers.

An hint is thus printed about why the driver failed.
Signed-off-by: NAndrea Merello <andrea.merello@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

During initialization a number of RX skbs are allocated and mapped
for DMA.
Currently if pci_map_single() fails, it will result in passing to the
HW a wrong DMA address (to write to!).

This patch adds check for this condition and eventually causes the
driver not to initialize, avoiding at least dangerous DMAs.
Signed-off-by: NAndrea Merello <andrea.merello@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Currently the driver uses pci_iomap() but iounmap() is called in
the error path

Change to use pci_iounmap() instead.
Reported-by: NHuqiu Liu <liuhq11@mails.tsinghua.edu.cn>
Signed-off-by: NAndrea Merello <andrea.merello@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Currently the contention window enable/disable HW flag is not
touched by the driver.

This patch explicitly set it to the correct value to make sure
contention window is enabled (AFAIK contention window must be
enabled in most (if not all) cases.
Signed-off-by: NAndrea Merello <andrea.merello@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add device tree binding documentation for Texas Instrument's wl1251
wireless lan chip. For now only the SPI binding is documented.
Signed-off-by: NSebastian Reichel <sre@debian.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add device tree support for the spi variant of wl1251.
Signed-off-by: NSebastian Reichel <sre@debian.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch adds support for requesting the regulator powering
the vio pin.
Signed-off-by: NSebastian Reichel <sre@debian.org>
Reviewed-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Move the power GPIO handling from the board code into
the driver. This is a dependency for device tree support.
Signed-off-by: NSebastian Reichel <sre@debian.org>
Reviewed-by: NPavel Machek <pavel@ucw.cz>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Move the wl1251 part of the wl12xx platform data structure into a new
structure specifically for wl1251.  Change the platform data built-in
block and board files accordingly.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Reviewed-by: NFelipe Balbi <balbi@ti.com>
Reviewed-by: NSebastian Reichel <sre@debian.org>
Reviewed-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Only one channel is returned - the one currently being used.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

On some chips, baseband watchdog hangs are more common than others, and
the driver has support for handling them.
Interrupts even after a watchdog hang are also quite common, so there's
not much point in spamming the user's logfiles.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

5/10 MHz channel bandwidth is configured via the PLL clock, instead of
the AR_PHY_MODE register. Using that register is AR93xx specific, and
makes the mode incompatible with earlier chipsets.

In some early versions, these flags were apparently applied at the wrong
point in time and thus did not cause connectivity issues, however now
they are causing problems, as pointed out in this OpenWrt ticket:

https://dev.openwrt.org/ticket/14916Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Trivially reduces text size too.

$ size drivers/net/wireless/ath/ath9k/debug.o*
   text	   data	    bss	    dec	    hex	filename
  34436	   2528	   5128	  42092	   a46c	drivers/net/wireless/ath/ath9k/debug.o.new
  34464	   2528	   5128	  42120	   a488	drivers/net/wireless/ath/ath9k/debug.o.old
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Number of MAC hangs and stuck beacons were missing
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

PREPARE_[DELAYED_]WORK() are being phased out.  They have few users
and a nasty surprise in terms of reentrancy guarantee as workqueue
considers work items to be different if they don't have the same work
function.

Update rt2800usb.c to use INIT_WORK() instead of PREPARE_WORK().  As
the work item isn't in active use during rt2800usb_probe_hw(), this
doesn't cause any behavior difference.

It would probably be best to route this with other related updates
through the workqueue tree.

Only compile tested.
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Ivo van Doorn <IvDoorn@gmail.com>
Cc: Gertjan van Wingerde <gwingerde@gmail.com>
Cc: Helmut Schaa <helmut.schaa@googlemail.com>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Even if we mark PS on, device still worked in normal mode. Patch
corrects that and now we send proper powertable command to device,
which put it in sleep mode when PS is on.
Reported-and-tested-by: NTino Keitel <tino.keitel@tikei.de>
Tested-by: NPedro Francisco <pedrogfrancisco@gmail.com>
Signed-off-by: NStanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Merge reclaim check for 3945 & 4965. This add some more checks for
3945, most importantly N_RX notify.
Signed-off-by: NStanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

We have only 5 tx queues on 3945, updating il->txq[5] results in
writing random value to HBUS_TARG_WRPTR register.

Additionally use spin lock to protect txq->write_ptr and
txq->need_update fields also modified in TX path.
Tested-by: NPedro Francisco <pedrogfrancisco@gmail.com>
Signed-off-by: NStanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

We don't perform OBSS scan internally. As we intend to use
corresponding feature in application, we will enable this flag.
Signed-off-by: NAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

While modifying timer, we need not delete timer.
Signed-off-by: NAvinash Patil <patila@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use SMP safe del_timer_sync instead of del_timer for cancelling
timers.
Signed-off-by: NAvinash Patil <patila@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

mac80211 handles the actual operations, so ath9k can just indicate
support for this. Based on initial tests, this combination seems to
work fine.
Signed-off-by: NJouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

removed following warnings-
drivers/net/wireless/airo.c:39: WARNING: Use #include <linux/io.h> instead of <asm/io.h>
drivers/net/wireless/airo.c:48: WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
Signed-off-by: NAvinash Kumar <avi.kp.137@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This is a relatively old Prism2 card which is correctly supported
by the hostap driver.
Signed-off-by: NCédric Le Goater <clg@fr.ibm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

linux/etherdevice.h was included twice.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NZhao, Gang <gamerh2o@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Logically, config B43_BCMA_PIO should depend on B43. This also solves
the problem that sub options of b43 driver didn't indent correctly in
make menuconfig's ncurses window.
Signed-off-by: NZhao, Gang <gamerh2o@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

commit 0baa0fd7
("rtlwifi: Convert core routines for addition of rtl8192se and
rtl8192de") removed setting HW_VAR_RCR, HW_VAR_MGT_FILTER and
HW_VAR_CTRL_FILTER. The last two are probably done because some hardware
does not support them. The first is probably a mistake. This patch adds
the missing set_hw_reg call.

For PCI support, rx_conf is not touched directly. Instead, get_hw_reg is
used to abstract between receive_config (for PCI) and rx_conf (for USB).

This was tested on a 10ec:8176 Realtek RTL8188CE (according to the
label on the mini-PCIe card). Before this patch, `iw wlan0 set monitor
otherbss` did not capture frames from other BSS's. After this patch, it
does print packets.
Tested-by: NPeter Wu <lekensteyn@gmail.com>
Signed-off-by: NPeter Wu <lekensteyn@gmail.com>
Acked-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The rtl*_set_check_bssid functions are mostly the same, but access the
RCR register in different ways. Use the get_hw_reg abstraction layer
(which reads rtlpci->receive_config for PCI devices and mac->rx_conf for
USB).

There is no functional change for cases where receive_config was
accessed directly. For rtl8192ce, there is still no change because
nothing modifies REG_RCR or receive_config. For rtl8192cu, it now also
applies changes to rx_conf from configure_filter, but that can be
considered a bug which is fixed later.
Signed-off-by: NPeter Wu <lekensteyn@gmail.com>
Acked-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>