Introduce manual FW recovery mode. It is activated if module parameter
@no_fw_recovery set to true. May be changed at runtime.

Recovery information provided by new "recovery" debugfs file. It prints:

mode = [auto|manual]
state = [idle|pending|running]

In manual mode, after FW error, recovery won't start automatically. Instead,
after notification to user space, recovery waits in "pending" state, as indicated by the
"recovery" debugfs file. User space tools may perform data collection and allow to
continue recovery by writing "run" to the "recovery" debugfs file.
Alternatively, recovery pending may be canceled by stopping network interface
i.e. 'ifconfig wlan0 down'
Signed-off-by: NVladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

On AR9003, tx control and tx status are in separate descriptor rings.
Tx duration is extracted from the tx control descriptor data, which
ar9003_hw_proc_txdesc cannot access.

Fix getting the duration by adding a separate callback for it.
Acked-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

chan_lock is not required for checking if
we are in the middle of a HW reset, so do it
early. This also removes the small window
where the lock is dropped and reacquired.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

On AR934x and newer SoC devices, the layout of the AR_RTC_PLL_CONTROL
register changed. This currently breaks at least 5/10 MHz operation.
AR933x uses the old layout.

It might also have been causing other stability issues because of the
different location of the PLL_BYPASS bit which needs to be set during
PLL clock initialization.

This patch also removes more instances of hardcoded register values in
favor of properly computed ones with the PLL_BYPASS bit added.
Reported-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The cycpwr_thr1 value needs to be lower on the extension channel than on
the control channel, similar to how the register settings are programmed
in the initvals.

Also drop the unnecessary check for HT40 - this register can always be
written. This patch has been reported to improve HT40 stability and
throughput in some environments.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This reverts commit 09efc563

I've received reports that this change is decreasing throughput in some
rare conditions on an AR9280 based device

Cc: stable@vger.kernel.org
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

On AR934x rev 3, settin the ad-hoc flag completely messes up hardware
state - beacons get stuck, almost no packets make it out, hardware is
constantly reset.

When leaving out that flag and setting up the hw like in AP mode, TSF
timers won't be automatically synced, but at least the rest works.

AR934x rev 2 and older are not affected by this bug
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

It is needed for AR934x as well
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Needed for calling vmalloc()/vfree()
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Clearing IEEE80211_TX_CTL_PS_RESPONSE in a frame
that is not in the current context doesn't seem right.
Instead make sure that we don't add such frames
to the UAPSD queue by using a local variable.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

There is no reason why frames marked with
IEEE80211_TX_CTL_TX_OFFCHAN have to be sent using
the UAPSD queue. Since mac80211 makes sure that
RoC is done before pushing an offchannel frame
to the driver, we can use the normal TX queues
for transmission.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Since we use IEEE80211_HW_QUEUE_CONTROL now, the
CAB/Offchannel queues are registered as the last
two queues. There is no need to check and reassign
the queues in the TX start()/done() routines.

CAB frames will not reach the tx() callback since
we set IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING and
pull the buffered frames during beacon transmission.
We also don't have a special HW queue for handling
off-channel frames.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Provide ethtool support; with support for interrupt coalescing through
get_coalesce/set_coalesce.
Placeholders for begin/complete will be used by runtime PM
to make sure target is powered up while performing ethtool operations
Signed-off-by: NVladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

When multiple channel contexts are enabled, a p2p interface
that is assigned to a context will have an address that
is different from the device mac address, which is used
by wpa_s as the p2p device ID.

Certain frames like provision requests use the device address
and these get dropped since ath9k_calculate_summary_state()
iterates over only the active interfaces in a context and the
device address is not used.

Fix this by adding the device mac address to the bssid mask.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Using the BSS information stored in mac80211 directly
is racy in certain conditions. For example, in a MCC
setup, if the scheduler is switching channels when
a local deauth is issued, calculation of the opmode/bssid
etc. is incorrect. To avoid this, store the bss params
in the driver and use it.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

AHB bus support was added in v2.6.38, through commit a0b907ee
("ath5k: Add AHB bus support."). That code can only be build if the
Kconfig symbol ATHEROS_AR231X is set. But that symbol has never been
added to the tree. So AHB bus support has always been dead code.

Let's remove all code that depends on ATHEROS_AR231X. If that symbol
ever gets added to the tree the AHB bus support can be re-added too.
Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

As suggeested by checkpatch:

WARNING: Prefer ether_addr_copy() over memcpy() if the Ethernet addresses are __aligned(2)

In wmi.c I had to change due to sparse warnings copying of struct wmi_mac_addr
from form &cmd->peer_macaddr.addr to cmd->peer_macaddr.addr. In
ath10k_wmi_set_ap_ps_param() I also added the missing ".addr" to the copy
command.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Makes it more readable and fixes checkpatch warnings:

drivers/net/wireless/ath/ath10k/debug.c:593: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:594: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:595: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:596: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:597: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:599: WARNING: quoted string split across lines
drivers/net/wireless/ath/ath10k/debug.c:600: WARNING: quoted string split across lines
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Fixes checkpatch warnings:

ath10k/htc.c:49: WARNING: Possible unnecessary 'out of memory' message
ath10k/htc.c:810: WARNING: Possible unnecessary 'out of memory' message
ath10k/htt.h:1034: CHECK: Please use a blank line after function/struct/union/enum declarations
ath10k/htt_rx.c:135: CHECK: Unnecessary parentheses around htt->rx_ring.alloc_idx.vaddr
ath10k/htt_rx.c:173: CHECK: Unnecessary parentheses around htt->rx_ring.alloc_idx.vaddr
ath10k/pci.c:633: WARNING: macros should not use a trailing semicolon
ath10k/wmi.c:3594: WARNING: quoted string split across lines
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Fixes checkpatch warnings:

WARNING: else is not generally useful after a break or return
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Fixes a checkpatch warning:

WARNING: void function return statements are not generally useful
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Fixes checkpatch warnings:

CHECK: No space is necessary after a cast
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Fixes checkpatch warnings:

WARNING: Missing a blank line after declarations

Please note that some of the cases I fixed by moving the variable declarations
to the beginning of the function, which is the preferred style in ath10k.
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Fixes checkpatch warnings:

CHECK: Please don't use multiple blank lines
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

CHECK: Alignment should match open parenthesis
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Fixes checkpatch warning:

ath10k/htt_rx.c:519: CHECK: Alignment should match open parenthesis
Signed-off-by: NKalle Valo <kvalo@qca.qualcomm.com>

Enable pulse detection on extension channel if 40MHz channel width has been set
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This happens when CONFIG_ATH9K_CHANNEL_CONTEXT is
not enabled.

../drivers/net/wireless/ath/ath9k/recv.c: In function ‘ath_rx_ps_beacon’:
../drivers/net/wireless/ath/ath9k/recv.c:553:27: error: ‘struct ath_softc’ has no member named ‘offchannel’
    if (sc->cur_chan == &sc->offchannel.chan)
                           ^
../scripts/Makefile.build:257: recipe for target 'drivers/net/wireless/ath/ath9k/recv.o' failed
make[10]: *** [drivers/net/wireless/ath/ath9k/recv.o] Error 1
../scripts/Makefile.build:404: recipe for target 'drivers/net/wireless/ath/ath9k' failed
make[9]: *** [drivers/net/wireless/ath/ath9k] Error 2
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Initialize neighbor linked list used by dynack to compute ACK timeout
as the maximum STA ACK timeout
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Enable ACK timeout estimation algorithm if set_coverage_class routine has been
called with negative coverage_class parameter. Dynack is automatically disabled
setting valid value for coverage class
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add ack_to entry to debugfs in order to dump current ACK timeout value
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Set control frame bit in rx filter if dynack processing has been activated
in order to enable ACK frame reception
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add sampling methods for ACK RX timestamp in ath_rx_tasklet() and for TX frame
timestamp in ath_tx_complete_aggr() and in ath_tx_process_buffer(). These
samples will be used in dynack processing for ACK timeout estimation
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Do not overwrite ACK timeout estimation in ath9k_hw_init_global_settings() if
dynack processing has been enabled
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add ACK timeout estimation algorithm to ath9k Makefile and Kconfig
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add dynamic ACK timeout estimation algorithm based on ACK frame RX timestamp,
TX frame timestamp and frame duration.
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Tested-by: NPhilippe Duchein <wireless-dev@duchein.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Add duration field to ath_tx_status in order to report frame duration for each
entry in multi-retry chain. These fields will be used in ACK timeout estimation
algorithm (dynack)
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Remove static keyword and export ath9k_hw_setslottime(),
ath9k_hw_set_ack_timeout() and ath9k_hw_set_cts_timeout() in hw.h.
These methods will be used in ACK timeout estimation algorithm (dynack)
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Assign 'primary_sta' to the active primary station
interface after iterating over the list of interfaces.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>