The pn544 can enter a firmware update mode where firmware blobs can be
pushed through the i2c line and flashed on the target.
A special command allows to verify that blobs are correctly flashed and
this is what we do for every downloaded firmware blob.
Signed-off-by: NEric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The firmware operation callback is passed by the physical layer to the
hci driver during probe. All the driver does is to store it and call it
when the fw_upload hci ops is invoked.
Signed-off-by: NEric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Result is added as an NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS attribute
containing the standard errno positive value of the completion result.
This event will be sent when the firmare download operation is done and
will contain the operation result.
Signed-off-by: NEric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This is in preparation for pn544-i2c firmware download feature, where we
need to know if we're in regular or firmware upload mode.
Signed-off-by: NEric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This API must be called by NFC drivers, and its prototype was
incorrectly placed.
Signed-off-by: NEric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

By not always starting the polling loop from the same modulation, we
avoid entering infinite loops where devices exporting 2 targets (on 2
different modulations) get the same target activated over and over.
If this target is not readable (e.g. a wallet emulating a tag), we will
stay in an error loop for ever.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

It seems that some pn533 firmwares go belly up when being asked to send
poll frames too frequently. Adding a 10ms delay between each of them
calm the chip down and prevent it from crashing.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

In order to fetch the discovered secure elements from an NFC controller,
we need to send a netlink command that will dump the list of available
SEs from NFC.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This is a typo coming from the initial implementation. se_discover fails
when it returns something different than zero and we should only display
a warning in that case.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The extended information frame are sent by PN533 to exchange frames
larger than 255 bytes. These extended frame are very close from the
standard ones except for the header size length. On each incoming
frame, we set the correct header length, and we do that only for the
standard pn533 chipsets as the acr122 does not seem to support extended
frames properly.
Signed-off-by: NOlivier Guiter <olivier.guiter@linux.intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

On sending large frames (size > 262), we split it in multiple chunks and
send them asynchronously with MI bit.
Signed-off-by: NOlivier Guiter <olivier.guiter@linux.intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Extended Information frames are slightly different from standard frames
as they can (theorically) handle datas up tu 64kB. PN533 firmware only
supports packet data up to 265 (incl. TFI byte)
This kind of frame are used when the pn533 wants to exchange more than
255 bytes, and this patch handles the reception of such frames.
Signed-off-by: NOlivier Guiter <olivier.guiter@linux.intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The AUTO RFCA bit forbids the pn533 chipset to turn its radio on
whenever an external field is present.
Without this bit set, some devices seems to get over flood by the
pn533 rf field and thus become hardly detectable.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

p2p devices must be able to support 424 kbps, so we should always select
that bitrate in initiator mode.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Some devices are getting confused when not being asked for their system
code with type F.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

By turning the radio off after each failed polling try, we dramatically
improve the pn533 polling loop efficiency.
Without this fix, all Android phones running the broadcom NFC stack are
almost never detected.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

By using the standard setting for the regular pn533 dongles, we no
longer wait for ever for an ATR_RES. Without this, a failing ATR_REQ
will put the hardware into a busy loop, constantly waiting for an
ATR_RES.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The SE_CONNECTIVITY event is for an SE to request connection to e.g. a
modem. The SE_TRANSACTION one is sent when an application running on a
specific SE wants to notify the host CPU about the end of a transaction.
Those events respectively map to the EVT_CONNECTIVITY and the
EVT_TRANSACTION HCI events.
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This patch fixes 3 sparse warnings:
nfcsim.c:63:25: sparse: symbol 'wq' was not declared.
nfcsim.c:484:12: sparse: symbol 'nfcsim_init' was not declared.
nfcsim.c:525:13: sparse: symbol 'nfcsim_exit' was not declared.
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NThierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

config: make ARCH=m68k allmodconfig

All error/warnings:

   drivers/net/wireless/mwifiex/cfg80211.c: In function
       'mwifiex_fill_coalesce_rule_info':
>> drivers/net/wireless/mwifiex/cfg80211.c:2493:3: error: implicit
       declaration of function 'mwifiex_is_pattern_supported'
       [-Werror=implicit-function-declaration]
   drivers/net/wireless/mwifiex/cfg80211.c: At top level:
   drivers/net/wireless/mwifiex/cfg80211.c:2537:12: warning:
       'mwifiex_cfg80211_set_coalesce' defined but not used
       [-Wunused-function]
   cc1: some warnings being treated as errors
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The LNA combining algorithm has to be run for cards
that support the required diversity features, make
sure that that correct conditions are met before
enabing this algorithm.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

BTCOEX has to be *disabled* for WLAN RX diversity to
work on combo cards.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Create a per-vif dummy node entry for keeping the multicast software
queues. This helps in setups with a lot of mulitcast traffic that could
otherwise potentially drown out unicast traffic to stations.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Instead of trying to schedule the same TID multiple times in a loop,
iterate over other TIDs/stations first.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This is a first step for improving fairness between legacy and 802.11n
traffic, and it should also improve reliability of resets and channel
changes by keeping the hardware queue depth very short.

When an aggregation session is torn down, all packets in the retry queue
will be removed from the BAW and freed.

For all subframes that have not been transmitted yet, the A-MPDU flag
will be cleared, and a sequence number allocated. This ensures that the
next A-MPDU session will get the correct initial sequence number.
This happens both on aggregation session start and stop.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Otherwise in some cases, EAPOL frames might be filtered during the
initial handshake, causing delays and assoc failures.

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

When the tid aggregation state has been marked as inactive, free
completed tx packets immediately. When a new aggregation session has not
been initialized yet, the BAW checks do not recognize it as expired.

Might fix potential stalls in setting up a new aggregation session.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

- Allow ath_tx_get_tid_subframe to return non-AMPDU subframes.
- Reset the tid paused state on aggregation stop
- Initialize software queues even when HT is not supported
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

When a packet has been tracked as part of the BlockAck window and added
to the hardware queue, it can end up back in the TID queue again with
fi->retries still set to 0 (e.g. if the frame was filtered). Keep an
extra bit for the BAW tracking status to fix this corner case.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The check for ATH_AMPDU_SUBFRAME_DEFAULT is unnecessary, since it's set
to half the maximum BlockAck Window size, which is already the maximum
value that h_baw could possibly have. Also remove unnecessary variables.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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

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

Improves packet retry order and helps with further tx queueing
improvements.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Useful for further fixes / cleanups
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This is essentially the same, but written shorter.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Acked-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

rt2x00queue_pause_queue_nocheck()is used only in this file.
Fix the following sparse warning:

drivers/net/wireless/rt2x00/rt2x00queue.c:939:6: warning: symbol 'rt2x00queue_pause_queue_nocheck' was not declared. Should it be
static?
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Acked-by: NGertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Make sure that CONFIG_ATH9K_BTCOEX_SUPPORT is used for
the WLAN/BT RX diversity hooks.

Reported by the kernel build testing backend.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Coalesce filters are configured in firmware based on settings
received from cfg80211.

Packet type which is required by firmware is determined based on
provided patterns in a rule:

Unicast: if pattern '01' with offset 0 is found
Multicast: if pattern '33:33' or '01:00:5e' with offset 0 is found
Broadcast: if pattern 'ff:ff:ff:ff' with offset 0 is found

Some example coalesce configuration files:

1) Coalesce Rx data packets from 192.168.0.88
mac address of our device is 00:50:43:21:53:7A
Source IP address offset comes out as 52 after following
calculations:
    32 bytes of HW 802.11 header + 8 bytes LLC +
    12 bytes in IPV4 header till source IP address
Destination mac is at offset 6 in HW header.

delay=100
condition=1
patterns=01,6+00:50:43:22,10+53:7A,52+c0:a8:00:58

2) Coalesce all broadcast and multicast packets(Multiple packet
types are not allowed in a single rule. Hence created separate
rules)

delay=400
condition=1
patterns=33:33
delay=400
condition=1
patterns=ff:ff:ff:ff
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>