If RX queue becomes empty then we need to restock the queue from tasklet to prevent
ucode from starving. A caller to iwl_rx_allocate will decide if allocated buffer should
come from GFP_ATOMIC or GFP_KERNEL.
Signed-off-by: Mohamed Abbas <mohamed.abbas@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Add ICT interrupt handler support, ICT should improve CPU utilization
 since it does not require target read which is very expensive. This
 interrupt handler only added to 5000 cards and newer. Device will write
 interrupts to ICT shared table to inform driver about its interrupts.

These patches will not touch 3945 and 4965 interrupt handlers and tasklet.
Signed-off-by: Mohamed Abbas <mohamed.abbas@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Fix the bug when using 11n "pure 40MHz" mode cause uCode
crashing by adding support for "pure 40MHz" in RX_ON command flag.
the "mode" field (bits 25:26) has value of 0-3
    0 = 20 MHz only
    1 = 40MHz only
    2 = Mixed
    3 = Reserved
Control Channel ID (bit 22) is valid only in Mixed mode.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

If transmit in HT rate, report the rate index as an MCS rate number
instead of an index. so "iw" can display correct BitRate
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Add new lock to be used when accessing some registers. Also move
    the register lock and iwl_grab_nic_access inside the function for register access. This
    will prevent from forgetting to hold locks and nic access in the right way and make code
    easier to maintain.

    We over use the priv->lock spin lock and I guess we need to add new
    one for Tx queue after that we might need to change most of these lock to
    BH and just keep priv->lock as irq type.
Signed-off-by: Mohamed Abbas <mohamed.abbas@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Two type of NVM available for devices 1000, 6000 and after, adding
support to read OTP lower blocks if OTP is used instead of EEPROM.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

IEEE80211_CONF_CHANGE_BEACON_INTERVAL was deprecated a month ago,
it is about time to remove all usage from the rt2x00 drivers and
use the correct beacon interval configuration through the bss_info
structure.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

The USB ID with unknown manufacturer is apparently sweex,
copy it to the correct location of the list and add 2
additional USB ID's also belonging to Sweex.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

set_infra_mode() tried to restore wpa keys using add_wep_key(). This never
worked so prevent driver from trying.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Split add_wpa_key() from rndis_iw_set_encode_ext so that conversion to cfg80211
would be easier later on.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Driver uses some unnamed bits to control encryption setup. Move these to
enumerations with proper names explaining their meaning.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

BCM4320 doesn't support OID_802_11_TX_POWER_LEVEL (chip implements
the command but setting value has no effect and getting txpower value
always returns 0xff, full power). So remove the code for cleanup.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Old variant of bcm4320 doesn't handle setting configuration parameters
correctly. One symptom is that MAC gets partially overwritten when any
config parameters are set. This patch disables config-params for bcm4320a
(and generic rndis-wlan).
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

The temperature measurement by uCode for 5150 and 5000 are different
        CSR_HW_REV_TYPE_5150: temperature sensor output voltage
        CSR_HW_REV_TYPE_5000: temperature in Celsius
temperature related operation for 5150 is measured by temperature sensor
output voltage; additional conversion is required for set and store
the temperature.

To make sure support different HW design; implement _ops method for
temperature related functions (temperature reading and set ct kill
threshold)
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Add "Greenfield" support for all devices except 4965 and
3945. "Greenfield" is part of 11n features to improve HT performance.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

'tpt' is a delta throughput (number of packets) and is corelated
to brightness of the LED. We already maintain a delta of packets in
rxtxpackets. There is no need to calculate this delta again which
was affecting the behaviour of LEDS.

Also add two new callback functions for ASSOCIATED/DISASSOCIATED states
where LED's will be *on* for associated state and *off* for disassociated state.

This fixes
http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=1771.
Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

The scratch pad register is used to store firmware status after
firmware is downloaded and initialized. After firmware status is
verified OK, the same register is used to store RX packet length.
Hence the firmware status code is no longer valid afterwards.

SD8688 firmware introduces a new register for firmware status
which will never be overwritten.

Also add scratch_reg variable to if_sdio_card structure and
initialize it based on the model of the card during probe.
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

This driver supports Intel's full MAC wireless multicomm 802.11 hardware.
Although the hardware is a 802.11agn device, we currently only support
802.11ag, in managed and ad-hoc mode (no AP mode for now).
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

The patch moves some utility functions from mac80211 to cfg80211.
Because these functions are doing generic 802.11 operations so they
are not mac80211 specific. The moving allows some fullmac drivers
to be also benefit from these utility functions.
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

My first patch submission used 200ms, which I then somehow
managed to revert back to the earlier 50ms I had used for
some tests in the second patch submission -- but that was
wrong, I should have used 200ms here. Correct that.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Some APs seem to drift away from the expected TBTT (timestamp %
beacon_int_in_usec differs quite a bit from zero) which can result in
us waking up way too early to receive a Beacon frame. In order to work
around this, re-configure the Beacon timers after having received a
Beacon frame from the AP (i.e., when we know the offset between the
expected TBTT and the actual time the AP is sending out the Beacon
frame).
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

The previous version used a simple loop to go through all Beacon
frames when determining the next TBTT and DTIM count. This is not too
bad for the case where the setup happens before timesync (i.e., very
small TSF), but this can become very heavy operation if a short Beacon
interval is used and the current TSF is large.

In preparation for a patch to update timer setup based on Beacon
timestamp, optimize this routine to take fixed time regardless of the
actual TSF value.
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

SD8688 is a WLAN/Bluetooth combo chip and both functions are supported
in a single firmware image. FUNC_INIT and FUNC_SHUTDOWN commands are
implemented to utilize the multiple function feature.

When SD8688 card is inserted, the firmware image should be downloaded
only once through either WLAN function (Libertas driver) or Bluetooth
function (Bluetooth driver).

This patch adds function init/shutdown for SD8688 WLAN function only.
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Usually, the 16-bit rx length is read from scratch pad registers
with two CMD52 transactions:
SD8385: 	IF_SDIO_SCRATCH_OLD (0x80fe/0x80ff)
SD8686/SD8688:	IF_SDIO_SCRATCH     (0x34/0x35)

Alternatively, SD8688 firmware offers an enhanced method for driver
to read an 8-bit rx length (in units) with a single CMD52:
IF_SDIO_RX_UNIT 0x43 is read one time after firmware is ready.
IF_SDIO_RX_LEN  0x42 is read every time when rx interrupt is received.
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

replace direct usages of SDIO model numbers with defined macros.
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

The GPSI interface driver does not re-enable the Card Event Interrupt, which
causes problems after a card event (for example: link-loss) comes in.  This
can lead, for example, to the card failing to re-associate.  This patch
ensures that we re-enable the Card Event Interrupt when we handle card events.
Signed-off-by: Andrey Yurovsky <andrey@cozybit.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

In "mac80211: split out and decrease probe wait time" I tried
to reduce the time waiting for a probe response, but failed to
take into account the case where we are detecting beacon loss
in software -- in that case we still wait the monitoring time
rather than the probe wait time. Fix this by refactoring the
mod_timer() calls in ieee80211_associated().
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

The requirement for wireless stats to be atomic is now mostly
artificial since we hold the rtnl _and_ the dev_base_lock for
iterating the device list. Doing that is not required, just the
rtnl is sufficient (and the rtnl is required for other reasons
outlined in commit "wext: fix get_wireless_stats locking").

This will fix http://bugzilla.kernel.org/show_bug.cgi?id=13344
and make things easier for drivers.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Currently, we will ask the driver to configure right away
when somebody changes the desired BSSID. That's totally
strange because then we will configure the driver without
even knowing whether the BSS exists. Change this to only
configure the BSSID when associated, and configure a zero
BSSID when not associated.

As a side effect, this fixes an issue with the iwlwifi
driver which doesn't implement sta_notify properly and
uses the BSSID instead and gets very confused if the
BSSID is cleared before we disassociate, which results
in the warning Marcel posted [1] and iwlwifi bug 1995 [2].

[1] http://thread.gmane.org/gmane.linux.kernel.wireless.general/32598
[2] http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=1995

Cc: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Device drivers using wiphy_apply_custom_regulatory() want some
regulatory settings applied to their wiphy, if no bands were
configured on the wiphy then something went wrong.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

This is always discarded anyway but lets just set this to our
safest lowest.
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

When I fixed the crypto bit I must have done the negative
test only -- it is quite clearly impossible to find _any_
IBSS to join with the parameters put the wrong way around.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath_regd_init() needs to be called with the wiphy already
properly set with the bands. Without this the custom regulatory
settings were not taking effect, and the device would get
the default channel settings from ath9k_[25]ghz_chantable.
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

When the genIE hasn't changed there's no reason to kick
the state machine since it won't be able to do anything
new -- doing this decreases the useless work we do for
reassociating because if we do kick the state machine
it will try to find a usable BSS but there might not be
one because wpa_supplicant will only change the BSSID
a little later.

In a sense this is a workaround for userspace behaviour,
but on the other hand userspace cannot really keep track
of what the kernel currently has for genIE since any
process could have changed that while wpa_supplicant
wasn't looking.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Report status unknown as if there were successfully transmitted.
This will avoid hostapd to disassociate because it doesn't understand what a status unknown is.
Signed-off-by: Alexandre Becholey <alexandre.becholey@epfl.ch>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

When updating the duration field for TX frames, skip the update for
PS-Poll frames that use this field for other purposes (AID).
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

If the AP includes our AID in the TIM IE, we need to process the
Beacon frame as far as PS is concerned (send PS-Poll or nullfunc data
with PM=0). The previous code skipped this in cases where the CRC
value did not change and it would not change if the AP continues
including our AID in the TIM..

There is no need to count the crc32 value for directed_tim with this
change, so we can remove that part. In order not to change the order
of operations (i.e., update WMM parameters prior to sending PS-Poll),
the CRC match is checked twice as only after the PS processing step,
the rest of the function is skipped if nothing changed in the Beacon.
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211 does not set PM field for normal data frames, so we need to
update that based on the current PS mode when using PS-Poll
(timeout=0) power save mode.

This allows the AP to remain in sync with our PS state. However, there
is still a potential race condition between PS state changes when
multiple TX queues are used and nullfunc and PS-Poll frames use
different queue. That corner case may need to be handled separately by
changing which queue is used either in ath9k or mac80211.
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

We must make sure the chip is awake when changing the RX filter
parameters. This could have caused problems, e.g., when changing the
interface to promiscuous mode while in sleep mode.
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

If the chip complains about TSF sync, make sure we remain awake to
sync with the next Beacon frame. In theory, this should not be needed
since we are currently trying to receive all Beacon frames, anyway,
better have this code ready should we ever change that.
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>