Over time, a whole bunch of drivers have come up
with their own scheme to delay the configure_filter
operation to a workqueue. To be able to simplify
things, allow configure_filter to sleep, and add
a new prepare_multicast callback that drivers that
need the multicast address list implement. This new
callback must be atomic, but most drivers either
don't care or just calculate a hash which can be
done atomically and then uploaded to the hardware
non-atomically.
A cursory look suggests that at76c50x-usb, ar9170,
mwl8k (which is actually very broken now), rt2x00,
wl1251, wl1271 and zd1211 should make use of this
new capability.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Enable AsyncFIFO and AGGWEP for AR9287_12 and later revisions only.
Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch fixes a bug in ath9k_stop() where the HW
was not put into FULL_SLEEP state. Not doing so will
cause issues in suspend-resume and the HW will not respond
to chip resets.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch fixes a bug where the device was enabled
before restoring the PCI state.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diversity_control and antenna_switch_swap are already
present in ath9k_ops_config. Remove duplicate occurrences
in ath_hw.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
PHY counters are available in all chipsets supported
by ath9k. Remove the check.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
ath9k supports the AR9002 family of chipsets. This includes
the AR9285 and the miniPCI AR9223 and AR9220 (which themselves
have AR9280+AR5133).
We now refer people to the wiki page as it seems this is not
as popular as we would have hoped.
Reported-by: JD <jd1008@gmail.com>
Cc: Dakota Lee <Dakota.Lee@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This matches ath9k, providing consistency when reading both drivers.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Now that its shared we can remove ath5k's own implementation.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Turns out ath5k and ath9k can share the same helper to
allocates RX skbs. We allocate skbs aligned to the cache line
size. This requirement seems to have come from AR5210; when
this was not done it seems sometimes we'd get bogus data. I'm
also told it may have been a performance enhancement
consideration. In the end I can't be sure we can remove this
on new hardware so just keep this and start sharing it through
ath.ko.
Make ath9k start using this, ath5k is next.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Get rid of calibration timer, instead use a software interrupt
to schedule the calibration tasklet.
a) We don't need a timer for this, there is no need for accuracy
even with round_jiffies i think this is a waste of resources.
Also we don't need to run calibration if we are idle (no
interrupts).
b) When we add ANI support we 'll just extend the poll function
and calibration tasklet and handle all periodic phy calibration
on one place (much cleaner).
c) Having calibration on a tasklet is better since during calibration
we can't transmit or receive (antennas are detached to measure
noise floor), previously calibration could run in parallel with
tx/rx and interfere (packet loss).
v2: kill tasklet on stop_hw, stop/wake queues
v3: use time_is_before_eq_jiffies to compare timestamp with current
time
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
* During attach preserve pcicfg bits when enabling pci core
sw retry fix.
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Don't put chip to full sleep because there are problems during
wakeup. Instead hold MAC/Baseband on warm reset state via a new
function ath5k_hw_on_hold.
* Minor cleanups
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Tested-by: Ben Greear <greearb@candelatech.com>
Tested-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Set correct xpd curve indices for high/low gain curves during
rfbuffer setup on RF5112B with both calibration curves available.
* Don't return zero min power when we have the same pcdac value
twice because it breaks interpolation. Instead return the right
x barrier as we do when we have equal power levels for 2 different
pcdac values.
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
* Read PCI-E infos offset from EEPROM and if it points to
serdes section (0x40), enable serdes programming (further tweaking
of serdes values during attach). This follows Legacy and Sam's
HAL sources.
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
In the the patch:
ath9k: use new FIF_PSPOLL configure filter
I forgot to add the new FIF_PSPOLL to the supported mask.
Without this we mask out the FIF_PSPOLL flag therefore
we'd ignore it from mac80211.
Cc: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Elsewhere, the tqi_type field is compared to constants having a name
beginning with AR5K_TX_QUEUE, rather than AR5K_TX_QUEUE_ID. I have thus
converted AR5K_TX_QUEUE_ID_CAB to AR5K_TX_QUEUE_CAB. This does, however,
change the value, so perhaps something else was wanted.
Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
ANI uses the beacon RSSI for its operation.
Update this properly.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The chainmask can be obtained directly from ath_hw.
Also, use a helper macro for comparing CTLs - this improves readability.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Write CCK power-per-rate array always and report
correct TX power to regulatory.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch revamps the antenna configuration mechanism
for 4K chips.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
A subsequent patch would use these for configuring
antennae on AR9285.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
regChainOffset is always zero, remove it.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Add eeprom_def.c, eeprom_4k.c and eeprom_9287.c
This improves maintainability.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We used to set pspoll filter on ath9k on AP mode but
we no longer need this mode specific check as mac80211
now does the check for us and informs us when we should
enable pspoll through FIF_PSPOLL.
Cc: Igor Perminov <igor.perminov@inbox.ru>
Cc: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Let ath5k_chan_set() always call ath5k_reset().
This fixes the bug that we don't
get any packets in monitor mode after:
ifconfig wlan0 down
iwconfig wlan0 mode monitor channel 1
ifconfig wlan0 up
but they arrive after
iwconfig wlan0 channel 2
Signed-off-by: Joerg Albert <jal2@gmx.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
queue == __AR9170_NUM_TXQ would cause a bug on the next line.
found by Smatch ( http://repo.or.cz/w/smatch.git ).
Cc: stable@kernel.org
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
When ar9170-2.fw was missing, the driver erroneously complained
about missing the initialization values file ar9170-1.fw...
Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
CC [M] drivers/net/wireless/ath/ath9k/eeprom.o
drivers/net/wireless/ath/ath9k/eeprom.c: In function ‘ath9k_hw_AR9287_check_eeprom’:
drivers/net/wireless/ath/ath9k/eeprom.c:2866: warning: comparison of distinct pointer types lacks a cast
Cc: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We will finalize this after some driver core changes, for now
we leave this unsupported.
Cc: Stephen Chen <stephen.chen@atheros.com>
Cc: Zhifeng Cai <zhifeng.cai@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: Stephen Chen <stephen.chen@atheros.com>
Cc: Zhifeng Cai <zhifeng.cai@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
These will be used later to add support for ar9271.
Cc: Stephen Chen <stephen.chen@atheros.com>
Cc: Zhifeng Cai <zhifeng.cai@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We don't use typdefs on ath9k, remove that _t.
Cc: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
ath9k_hw_keyreset() has a spurious check for ah->curchan..
remove it.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The keycache reset will not fail as right above we ensure
to set the sc->keymax to be <= ah->caps.keycache_size. Just remove
this dangling check.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
If hw initialization fails (ath9k_hw_init()) on ath_init_softc()
we bail out and call ath9k_hw_detach(). The call ath9k_hw_detach()
is conditional though as ath9k_hw_init() could itself have called
ath9k_hw_detach(). Just describing this is itself a brain twister.
Avoid this nonsense by removing ath9k_hw_detach() from ath9k_hw_init().
Upon hw initialization failure we expect the callers to take care of
the cleanup.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
kfree(NULL) works so remove all those branches which check
for it before kfree()'ing on ath9k_hw_rfdetach().
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We re-label the device driver initialization routines from the
ath_softc, the "Software Carrier" fillers. This should make it
clearer what each of these do.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
During initialization ath9k tends to use "attach" to when we
initialize hardware due to the fact we used to attach a "HAL".
The notion of a HAL is long gone, so lets just be clear on what
we are doing.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This makes reading the hardware initialization process
easier to understand. The new helpers added are:
ath9k_hw_init_cal_settings()
ath9k_hw_init_mode_regs()
ath9k_hw_init_mode_gain_regs()
ath9k_hw_init_11a_eeprom_fix()
This patch has no functional changes.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We're now propagating the -ENOMEM error so there is no need to
keep a debug message there now.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This reflects better what we are actually doing there.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This reflects better what we are actually doing there.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The softc is cached and set within the ath_hw struct.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
ath9k_hw_attach() was going first through some device id verifier,
and then calling some other helper which was doing the real hardware
initialization. Lets just do the devid checks within the real worker
by calling a helper ath9k_hw_devid_supported().
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We do this in case attach and friends try to get back to
ah from the softc somehow.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This lets us trim one argument off of hw initializer routines.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This lets us simplify attach code and arguments passed.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We were never propagating hw initialization errors, lets
do that now and also use -EOPNOTSUPP when device revision is
not supported yet.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This makes adding new hw revisions a one line change here.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We will clean this up next to just use a switch.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The mac80211 workqueue exists to enable mac80211 and drivers
to queue their own work on a single threaded workqueue. mac80211
takes care to flush the workqueue during suspend but we never
really had requirements on drivers for how they should use
the workqueue in consideration for suspend.
We extend mac80211 to document how the mac80211 workqueue should
be used, how it should not be used and finally move raw access to
the workqueue to mac80211 only. Drivers and mac80211 use helpers
to queue work onto the mac80211 workqueue:
* ieee80211_queue_work()
* ieee80211_queue_delayed_work()
These helpers will now warn if mac80211 already completed its
suspend cycle and someone is trying to queue work. mac80211
flushes the mac80211 workqueue prior to suspend a few times,
but we haven't taken the care to ensure drivers won't add more
work after suspend. To help with this we add a warning when
someone tries to add work and mac80211 already completed the
suspend cycle.
Drivers should ensure they cancel any work or delayed work
in the mac80211 stop() callback.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We need to process tx descriptors for all queues (currently main tx
queue and cabq) which may have triggered the TX completion interrupt.
Otherwise, the queues can get stuck after sending a few frames.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: Christian Lamparter <chunkeey@web.de>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Previously, we would store the operating mode at interface up time,
but only update the PCU registers when the next reset happened.
The result is that if beacon configuration (ops->bss_info_changed)
happens before ops->config, we will program the wrong things into
the timer registers. Consequently, beacons won't work in AP mode
until after a reset (channel change, scan etc.).
This is fragile anyway so just program the opmode as soon as
mac80211 gives it to us.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Monotonicity of packet error rate should be kept when moving
from one phy to another (legacy to ht, ht single stream to dual,
etc). Current code skips updating per for other phys.
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Now the lowest rate in 11na ht40 mode is 13.5Mbps this shortens the
range when compared to 11na ht20 mode where the lowest rate is 6.5Mbps.
To improve the range, make 6.5Mbps as the lowest rate in 11na ht40 mode,
this improves the range by approximately 2dB. 11ng ht40 does not have
this issue as it also has basic rates (1, 2, 5.5 and 11).
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Make atheros wireless drivers visible when you select
"Atheros wirless drivers". Adds links to ath.ko page,
and Atheros drivers page on the wiki.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The ath.ko module itself depends on cfg80211
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
cancel_delayed_work_sync() and cancel_work_sync() are already being
used therefore already waiting for all pending work by the driver
to have been completed, no need to flush the mac80211 workqueue.
Cc: Christian Lamparter <chunkeey@web.de>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We should be cancelling our work at the stop callback since
we are borrowing the mac80211 workqueue for our work. As it
stands mac80211 expects this for suspend purposes.
The ath9k specific virtual wiphy stuff need only be
cancelled only when the we have no secondary virtual wiphys.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We do this as we'll be moving the cancel elsewhere later.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
ath9k uses the mac80211 workqueue for 4 different types of work:
* Led blink work
* TX hang monitoring work
* internal wiphy schedular work
* channel change work done for internal wiphy schedular
Since the internal wiphy schedular can end up kicking off some
channel channel change work we should first cancel the wiphy
schedular work and then the channel change work.
The TX hang work can be cancelled second since we're going down
anyway.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Our version goes by the kernel release.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
We are using setpower routines regardless of the current power mode.
Don't bother the hardware, if it is not necessary.
Changes-licensed-under: ISC
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
There is a small window where the mac80211 changes the IEEE80211_CONF_PS
flag, and then informs the driver about the change. We have a race
condition if we are checking the flag in the same time. Avoid it by
introducing a local variable, and using that instead of checking the
IEEE80211_CONF_PS flag directly.
This fix the problem reported by Luis:
http://article.gmane.org/gmane.linux.kernel.wireless.general/34363
Changes-licensed-under: ISC
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Fix this build error when CONFIG_AR9170_LEDS is not set
drivers/net/wireless/ath/ar9170/main.c:1296: error: 'struct ar9170' has
no member named 'led_work'
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cleanup aggregation start/stop function interfaces.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
TH gets 5 GHz.
Cc: David Quan <david.quan@atheros.com>
Cc: Michael Green <michael.green@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Incorrect limits leads to reads outside array bounds.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
mac80211 will have disabled the queues for us when
needed.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The new values are taken from the recently open sourced Atheros HAL.
Correctness is also confirmed by the users with access to Atheros
documentation.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
