linux-toradex.git/drivers/net/wireless/ath/ath10k/debug.h, branch v4.10

ath10k: allow setting coverage class

2016-10-04T15:03:22+00:00

Unfortunately ath10k does not generally allow modifying the coverage class
with the stock firmware and Qualcomm has so far refused to implement this
feature so that it can be properly supported in ath10k. If we however know
the registers that need to be modified for proper operation with a higher
coverage class, then we can do these modifications from the driver.

This is a hack and might cause subtle problems but as it's not enabled by
default (only when user space changes the coverage class explicitly) it should
not cause new problems for existing setups. But still this should be considered
as an experimental feature and used with caution.

This patch implements the support for first generation cards (QCA9880, QCA9887
and so on) which are based on a core that is similar to ath9k. The registers
are modified in place and need to be re-written every time the firmware sets
them. To achieve this the register status is verified after certain WMI events
from the firmware.

The coverage class may not be modified temporarily right after the card
re-initializes the registers. This is for example the case during scanning.

Thanks to Sebastian Gottschall  for initially
working on a userspace support for this. This patch wouldn't have been
possible without this documentation.

Signed-off-by: Benjamin Berg 
Signed-off-by: Simon Wunderlich 
Signed-off-by: Mathias Kretschmer 
Signed-off-by: Kalle Valo

ath10k: add support for ath10k_sta_statistics support

2016-07-08T06:37:47+00:00

Enable support for 'drv_sta_statistics' callback.
Export rx_duration support if available to cfg80211/nl80211

This can also act as a placeholder for any new per STA stats support

Signed-off-by: Mohammed Shafi Shajakhan 
Signed-off-by: Kalle Valo

ath10k: fix 10.4 extended peer stats update

2016-07-08T06:36:41+00:00

10.4 'extended peer stats' will be not be appended with normal peer stats
data and they shall be coming in separate chunks. Fix this by maintaining
a separate linked list 'extender peer stats' for 10.4 and update
rx_duration for per station statistics. Also parse through beacon filter
(if enabled), to make sure we parse the extended peer stats properly.
This issue was exposed when more than one client is connected and
extended peer stats for 10.4 is enabled

The order for the stats is as below
S - standard peer stats, E- extended peer stats, B - beacon filter stats

{S1, S2, S3..} -> {B1, B2, B3..}(if available) -> {E1, E2, E3..}

Fixes: f9575793d44c ("ath10k: enable parsing per station rx duration for 10.4")
Signed-off-by: Mohammed Shafi Shajakhan 
Signed-off-by: Kalle Valo

ath10k: fix checkpatch warnings related to spaces

2016-04-14T14:30:51+00:00

Fix checkpatch warnings about use of spaces with operators:

spaces preferred around that '*' (ctx:VxV)

This has been recently added to checkpatch.

Signed-off-by: Kalle Valo

ath10k: add basic skeleton to support ahb

2016-01-28T08:47:19+00:00

qca4019 uses ahb instead of pci where it slightly differs in device
enumeration, clock control, reset control, etc. Good thing is that
ahb also uses copy engine for the data transaction. So, the most of
the stuff implemented in pci.c/ce.c are reusable in ahb case too.

Device enumeration in ahb case comes through platform driver/device
model. All resource details like irq, memory map, clocks, etc for
qca4019 can be fetched from of_node of platform device.

Simply flow would look like,

 device tree => platform device (kernel) => platform driver (ath10k)

Device tree entry will have all qca4019 resource details and the same
info will be passed to kernel. Kernel will prepare new platform device
for that entry and expose DT info to of_node in platform device.
Later, ath10k would register platform driver with unique compatible name
and then kernels binds to corresponding compatible entry & calls ath10k
ahb probe functions. From there onwards, ath10k will take control of it
and move forward.

New bool flag CONFIG_ATH10K_AHB is added in Kconfig to conditionally
enable ahb support in ath10k. On enabling this flag, ath10k_pci.ko
will have ahb support. This patch adds only basic skeleton and few
macros to support ahb in the context of qca4019.

Signed-off-by: Raja Mani 
Signed-off-by: Kalle Valo

ath10k: add debugfs support for Per STA total rx duration

2016-01-26T14:47:37+00:00

Add debugfs support for per client total rx duration, track this
via the report of Peer stats rx duration reported for every 500ms

Signed-off-by: Mohammed Shafi Shajakhan 
Signed-off-by: Kalle Valo

ath10k: split driver info messages during device initialisation

2015-11-30T14:54:58+00:00

Earlier we printed all the info messages after a successful device
initialisation and firmware boot, but that's problematic if something goes
wrong and there's no easy way to know what firmware version was used and so on.

Split the info messages into smaller pieces and print them as soon as we have
the info available.

Signed-off-by: Kalle Valo

ath10k: make fw stats prints specific to firmware version

2015-10-19T14:42:03+00:00

The patch makes debug stats prints fw specific by adding a new member
in wmi_ops. That way it's easier to add fw_stats support to 10.4 firmware.

Signed-off-by: Manikanta Pubbisetty 
Signed-off-by: Tamizh Chelvam 
Signed-off-by: Kalle Valo

ath10k: implement debugfs interface for Transmit Power Control stats

2015-10-06T11:42:59+00:00

The Transmit Power Control (TPC) dump will show the power control values for
each rate which makes it easier to debug calibration problems.

Example usage:

# cat /sys/kernel/debug/ieee80211/phy0/ath10k/tpc_stats
TPC config for channel  5180  mode  10

CTL             = 0x10 Reg. Domain              = 58
Antenna Gain    = 1    Reg. Max Antenna Gain    = 0
Power Limit     = 34   Reg. Max Power           = 34
Num tx chains   = 3    Num supported rates      = 155

**********CDD POWER TABLE*******

No.  Preamble Rate_code tpc_valu1 tpc_value2 tpc_value3
0       CCK     0x40       0            0       0
1       CCk     0x41       0            0       0

[...]

154     HTCUP   0x 0       24           0       0
**********STBC POWER TABLE******
No.  Preamble Rate_code tpc_valu1 tpc_value2 tpc_value3
0       CCK     0x40       0            0       0

[...]

154     HTCUP   0x 0       24           24      0
**********TXBF POWER TABLE******

is used to dump the tx power control stats.

Signed-off-by: Maharaja Kennadyrajan 
Signed-off-by: Kalle Valo

ath10k: enable pci soc powersaving

2015-05-22T10:39:28+00:00

By using SOC_WAKE register it is possible to bring
down power consumption of QCA61X4 from 36mA to
16mA when associated and idle.

Currently the sleep threshold/grace period is at a
very conservative value of 60ms.

Contrary to QCA61X4 the QCA988X firmware doesn't
have Rx/beacon filtering available for client mode
and SWBA events are used for beaconing in AP/IBSS
so the SoC needs to be woken up at least every
~100ms in most cases. This means that QCA988X
is at a disadvantage and the power consumption
won't drop as much as for QCA61X4.

Due to putting irq-safe spinlocks on every MMIO
read/write it is expected this can cause a little
performance regression on some systems. I haven't
done any thorough measurements but some of my
tests don't show any extreme degradation.

The patch removes some explicit pci_wake calls
that were added in 320e14b8db51aa ("ath10k: fix
some pci wake/sleep issues"). This is safe because
all MMIO accesses are now wrapped and the device
is woken up automatically if necessary.

Signed-off-by: Michal Kazior 
Signed-off-by: Kalle Valo