Fix an off-by-one error that resulted in not reporting the signal strength
for the first chain
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Take into account device rx stream in mt76x02_mac_process_rate
in order to not report wrong number of rx spatial stream to mac80211.
The issue has been reported on mt76x0 device which is 1x1:1 however
the hw sometimes reports rx nss equal to 2
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Use the appropriate mac80211 callbacks after beacon transmission
Signed-off-by: Felix Fietkau <nbd@nbd.name>

It is usually negative, so it needs to be signed.
Signed-off-by: Felix Fietkau <nbd@nbd.name>

The generic EWMA code cannot deal with negative numbers, so convert signal
to a positive number before adding it
Fixes mt76x2 AGC tuning
Signed-off-by: Felix Fietkau <nbd@nbd.name>

This will be used by mt7603 as well
Signed-off-by: Felix Fietkau <nbd@nbd.name>

It will be reused by mt7603 later
Signed-off-by: Felix Fietkau <nbd@nbd.name>

The hardware does not deal with multiple WCID entries for the same station
properly. Set IEEE80211_HW_NEEDS_UNIQUE_STA_ADDR to avoid those cases
Signed-off-by: Felix Fietkau <nbd@nbd.name>

On MT76x2, the hardware does not report tx status in the FIFO register,
if the packet id is 0.
Change the allocation of packet IDs to use 0 for no-ack packets, 1 for
non-probing packets and 2-255 for packets with tx status requested.
Fixes rate control issues
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Move mt76x02 led support in mt76x02-lib module in order to
add tpt led trigger to mt76x0e driver
Tested-by: LGA1150 <dqfext@gmail.com>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Use proper name for __MT76x02_H macro in mt76x02.h
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Call mt76_dma_add_buf routine directly in mt76_dma_tx_queue_skb
and avoid indirect call if not necessary
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Don't populate the const array 'data' on the stack but instead
make it static. Makes the object code smaller by 78 bytes:

Before:
   text    data     bss     dec     hex filename
   5438    1080       0    6518    1976 mediatek/mt76/mt76x2/usb_mcu.o

After:
   text    data     bss     dec     hex filename
   5296    1144       0    6440    1928 mediatek/mt76/mt76x2/usb_mcu.o

(gcc version 8.2.0 x86_64)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Port mt76x02_check_tx_hang watchdog from vendor driver in order to
perform a device reset when tx mac/dma logic hangs. Tx mac/dma stuck
has been observed when the device is heavy loaded or in a noisy
environment. Moreover introduce wdt delayed work in order to run
tx_hang watchdog. For the moment run mt76x02_check_tx_hang watchdog
just on mt76x2 devices since the issue has not been observed on mt76x0
driver yet
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Precompute data length in order to avoid to allocate the related
skb data structure if reported length does not fit in queue buf_size
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Do not set bw variable to zero for legacy rates since it is already
initialized to zero. Moreover set nss to 1 just for legacy rates
since nss will be properly set for VHT/HT rates
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Ported from the reference driver. Should fix compliance with ETSI
regulatories on preventing transmission while energy detect values
are above the threshold.
The code has been tested using an ath9k device running tx99 as
noise generator
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Update default value for MT_TX_LINK_CFG according to vendor driver
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Grab mt76_dev mutex in mt76x02_dfs_set_domain since it runs
concurrently with mt76x{0,2}_set_channel routines
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Add static qualifier to mt76x2_init_hardware routine since it is
used just in pci_init.c
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Configure MT_VHT_HT_FBK_CFG1 values similar like vendor driver.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Configure protection based on information that are provided to
us either by remote AP or by hostapd via HT operation IE.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

On new mt76 chips, phy mode is configured by last 3 bits
of rate value. Hence OFDM bit is marked by 0x2000
instead of 0x4000.
Acked-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Use set_rts_threshold calback to enable/disable threshold only for
legacy traffic.

Protection for HT and VHT traffic is defined by HT operation element
and it's provided by remote AP or by hostapd.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Fix Automatic Channel Selection (ACS) support in mt76x0e driver
configuring properly MT_CH_TIME_CFG register

Fixes: 62503186 ("mt76x0: pci: add get_survey support")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

As already done for pcie code in commit 79d1c94c ("mt76: avoid
queue/status spinlocks while passing tx status to mac80211") make sure
that no tx related spinlocks are taken during the ieee80211_tx_status call
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Grab mt76_dev mutex in mt76x02_mac_work handler since it runs
concurrently with mt76x{0,2}_set_channel routines
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Reconfigure properly MT_MAC_SYS_CTRL register after mac sw-reset
in mt76x02_check_mac_err routine

Fixes: 73556561 ("mt76x0: use mt76x02_mac_work as stats handler")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

MODULE_FIRMWARE() is used in usb_mcu.c and provided by linux/module.h,
but this header file is not directly included. This causes problems in
backports with some kernel versions.

Add the missing include.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Precompute data length in order to avoid to allocate the related
skb data structure if reported length does not fit in queue buf_size
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Remove napi from mt76_dma_rx_fill routine signature since
it is a leftover of a previous implementation and it is no
longer used
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Allows mac80211 to keep track of the service period
Signed-off-by: Felix Fietkau <nbd@nbd.name>

Avoids drowning out regular transmissions
Signed-off-by: Felix Fietkau <nbd@nbd.name>

So far the code only validates the buffer size of the first skb.
Extend this check to cover additional fragments as well, in case the size
is corrupted during a DMA reset.
Signed-off-by: Felix Fietkau <nbd@nbd.name>

The linux-firmware brcmfmac firmware files contain an embedded table with
per country allowed channels and strength info.

For recent hardware these versions of the firmware are specially build for
linux-firmware, the firmware files directly available from Cypress rely on
a separate clm_blob file for this info.

For some unknown reason Cypress refuses to provide the standard firmware
files + clm_blob files it uses elsewhere for inclusion into linux-firmware,
instead relying on these special builds with the clm_blob info embedded.
This means that the linux-firmware firmware versions often lag behind,
but I digress.

The brcmfmac driver does support the separate clm_blob file and always
tries to load this. Currently we use request_firmware for this. This means
that on any standard install, using the standard combo of linux-kernel +
linux-firmware, we will get a warning:
"Direct firmware load for ... failed with error -2"

On top of this, brcmfmac itself prints: "no clm_blob available (err=-2),
device may have limited channels available".

This commit switches to firmware_request_nowarn, fixing almost any brcmfmac
device logging the warning (it leaves the brcmfmac info message in place).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

There is a system warning message, warn_slowpath-fmt, during suspend
while using supplicant join AP and enable wowl feature by IW command.
It's caused by brcmf_pno_remove_request path can't find the reqid.
This fix will not go to remove pno request function if there is no
pno scan.
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Lo-Hsiang Lo <double.lo@cypress.com>
Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

It provides more meaningful messages.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

Accessing struct device is pretty useful/common so having a direct
pointer:
1) Simplifies some code
2) Makes bcma_bus_get_host_dev() unneeded
3) Allows further improvements like using dev_* printing helpers
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

With the current approach of scanning, roaming delays are observed.
Firmware has support for back ground scanning. To get this advantage,
mac80211 hardware scan is implemented, which decides type of scan to
do based on connected state.

When station is in not connected, driver returns with special value 1
to trigger software scan in mac80211. In case of connected state,
background scan will be triggered.
Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Siva Rebbagondla <siva.rebbagondla@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

usb_register() may fail, so let's check its status and issue an error
message if it fails.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>