wl1251: dynamically allocate memory used for DMA

With introduction of vmap'ed stacks, stack parameters can no
longer be used for DMA and now leads to kernel panic.

It happens at several places for the wl1251 (e.g. when
accessed through SDIO) making it unuseable on e.g. the
OpenPandora.

We solve this by allocating temporary buffers or use wl1251_read32().

Tested on v5.18-rc5 with OpenPandora.

Fixes: a1c510d0adc6 ("ARM: implement support for vmap'ed stacks")
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/1676021ae8b6d7aada0b1806fed99b1b8359bdc4.1651495112.git.hns@goldelico.com

wl1251: fix always return 0 error

wl1251_event_ps_report() should not always return 0 because
wl1251_ps_set_mode() may fail. Change it to return 'ret'.

Fixes: f7ad1eed4d4b ("wl1251: retry power save entry")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200730073939.33704-1-wanghai38@huawei.com

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation this program is
distributed in the hope that it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more details you should have received a copy of the gnu general
public license along with this program if not write to the free
software foundation inc 51 franklin st fifth floor boston ma 02110
1301 usa

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 246 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.674189849@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

mac80211: Pass new RSSI level in CQM RSSI notification

Extend ieee80211_cqm_rssi_notify with a rssi_level parameter so that
this information can be passed to netlink clients in the next patch, if
available. Most drivers will have this value at hand. wl1251 receives
events from the firmware that only tell it whether latest measurement
is above or below threshold so we don't pass any value at this time
(parameter is 0).

Signed-off-by: Andrew Zaborowski <andrew.zaborowski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

mac80211: Add support for beacon report radio measurement

Add the following to support beacon report radio measurement
with the measurement mode field set to passive or active:
1. Propagate the required scan duration to the device
2. Report the scan start time (in terms of TSF)
3. Report each BSS's detection time (also in terms of TSF)

TSF times refer to the BSS that the interface that requested the
scan is connected to.

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
[changed ath9k/10k, at76c59x-usb, iwlegacy, wl1251 and wlcore to match
the new API]
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

wl1251: only call ieee80211_beacon_loss in managed mode

ieee80211_beacon_loss() is only to be called in managed mode,
but the firmware may send the sync timeout event at any time,
so do a check before calling.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Tested-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wl1251: fix NULL pointer dereference

wl1251: fix NULL pointer dereference

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Reported-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wl1251: retry power save entry

Port of the power save entry retry code from wl1251 driver version included
in the Maemo Fremantle kernel.
This tries to enable power save mode up to 3 times before failing.

Signed-off-by: David Gnedt <david.gnedt@davizone.at>
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: remove IEEE80211_HW_SCAN_WHILE_IDLE

There are only a few drivers that use HW scan, and
all of those don't need a non-idle transition before
starting the scan -- some don't even care about idle
at all. Remove the flag and code associated with it.

The only driver that really actually needed this is
wl1251 and it can just do it itself in the hw_scan
callback -- implement that.

Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

wl1251: always report beacon loss to the stack

Always report beacon loss to the stack, not only when in powersave
state. This is because there's possibility that the driver disables
PSM before it handles old BSS_LOSE_EVENT, so beacon loss has to be
reported.

Patch based on old maemo patch by:
Janne Ylalehto <janne.ylalehto@nokia.com>
Juuso Oikarinen <juuso.oikarinen@nokia.com>
Luciano Coelho <luciano.coelho@nokia.com>
Yuri Ershov <ext-yuri.ershov@nokia.com>

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless/wl12xx/wl1251: move TI WLAN modules to a common ti subdirectory

Move wl12xx and wl1251 modules into a new drivers/net/wireless/ti
directory. Add a TI WLAN Kconfig option and Makefile to support this
change.

Signed-off-by: Luciano Coelho <coelho@ti.com>
Cc: John W. Linville <linville@tuxdriver.com>