ath10k: hif: make send_complete_check op optional

That way we don't need to have an empty function in sdio.c.

No functional changes, compile tested only.

Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1587037859-28873-5-git-send-email-kvalo@codeaurora.org

ath10k: rename ath10k_hif_swap_mailbox() to ath10k_hif_start_post()

Convert ath10k_hif_swap_mailbox() to a more generic op so that bus drivers can
do more than just swap the mailbox, for example set power save settings like in
the following sdio patch.

No functional changes, compile tested only.

Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1587037859-28873-2-git-send-email-kvalo@codeaurora.org

ath10k: disable TX complete indication of htt for sdio

For sdio chip, it is high latency bus, all the TX packet's content will
be tranferred from HOST memory to firmware memory via sdio bus, then it
need much more memory in firmware than low latency bus chip, for low
latency chip, such as PCI-E, it only need to transfer the TX descriptor
via PCI-E bus to firmware memory. For sdio chip, reduce the complexity of
TX logic will help TX efficiency since its memory is limited, and it will
reduce the TX circle's time of each packet and then firmware will have more
memory for TX since TX complete also need memeory.

This patch disable TX complete indication from firmware for htt data
packet, it will not have TX complete indication from firmware to ath10k.
It will cut the cost of bus bandwidth of TX complete and make the TX
logic of firmware simpler, it results in significant performance
improvement on TX path.

Udp TX throughout is 130Mbps without this patch, and it arrives
400Mbps with this patch.

The downside of this patch is the command "iw wlan0 station dump" will
show 0 for "tx retries" and "tx failed" since all tx packet's status
is success.

This patch only effect sdio chip, it will not effect PCI, SNOC etc.

Tested with QCA6174 SDIO with firmware
WLAN.RMH.4.4.1-00017-QCARMSWPZ-1

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200212080415.31265-2-wgong@codeaurora.org

ath10k: Add WMI diag fw logging support for WCN3990

Integrated WiFi chipset ex:WCN399x supports fw logging
using WMI copy engine and shared mem DIAG based fw logging.
By default shared mem DIAG based fw logging is enabled.
To support WMI copy engine based fw logging add QMI
control message to enable WMI copy engine based fw logging.

Enable WMI based fw logging using fw_diag_log module parameter.

insmod ath10k_core.ko fw_diag_log=1

DIAG utility(https://github.com/andersson/diag) implements extraction
of diagnostics related messages between application processor and
various subsystems while shared mem DIAG based fw logging is enabled.

Testing: Tested on WCN3990/QCA6174 HW
Tested FW: WLAN.HL.3.1-00959-QCAHLSWMTPLZ-1

Signed-off-by: Govind Singh <govinds@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

ath10k: switch to use SPDX license identifiers

Use SPDX identifiers everywhere in ath10k.

Makefile was incorrectly marked in commit b24413180f56 ("License cleanup: add
SPDX GPL-2.0 license identifier to files with no license"), fix that as well.

Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

ath10k: enable Factory Test Mode for WCN3990

The support to put WCN3990 firmware into Factory
test mode is not present currently. The WCN3990
firmware can operate in Factory test mode based
on the mode it receives in the wlan enable message
from the host driver.

When the host driver is started in testmode send
the operating mode as UTF mode, to the WCN3990
firmware, in the wlan enable message to start the
firmware in Factory test mode.

Tested on: WCN3990
Tested FW: WLAN.HL.2.0-01192-QCAHLSWMTPLZ-1.

Signed-off-by: Rakesh Pillai <pillair@codeaurora.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

ath10k: change swap mail box check after htc ready

The swap box flag of firmware is not set before htc ready, then it
will not set swap box flag in ath10k driver, and it will let swap
box setting not same between firmware and ath10k driver, then it
will trigger firmware assert failure.

Check the flag and set swap box after htc ready will fix the firmware
assert failure.

Tested with QCA6174 SDIO with firmware
WLAN.RMH.4.4.1-00005-QCARMSWP-1.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

ath10k: add support to get target info from hif ops

wcn3990 does not use bmi.
Add support to get target info from hif ops.

Signed-off-by: Rakesh Pillai <pillair@codeaurora.org>
Signed-off-by: Govind Singh <govinds@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

ath10k: modify hif tx paddr to dma_addr_t type

Change type of hif sg tx paddr to dma_addr_t for
supporting target having addressing mode greater than
32 bit.

Signed-off-by: Govind Singh <govinds@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

ath10k: update copyright year

Update year for Qualcomm Atheros, Inc. copyrights.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: clean header files from bad block comments

Fix output from checkpatch.pl like:

Block comments use a trailing */ on a separate line

Signed-off-by: Marcin Rokicki <marcin.rokicki@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: add board data download from target

The QCA9887 stores its calibration data (board.bin) inside the EEPROM of
the target. This has to be downloaded manually to allow the device to
initialize correctly.

Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com>
[kvalo@qca.qualcomm.com: handle -EOPNOTSUPP and s/fetch_board_data/fetch_cal_eeprom]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: remove htc polling for tx completion

Since polling for tx completion is handled whenever target to host
messages are received, removing the unnecessary polling mechanism for
send completion at HTC level.

Reviewed-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: remove unused dl_is_polled

Since polling for received messages not supported, remove unused
dl_is_polled.

Reviewed-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: register per copy engine receive callbacks

Register receive callbacks for every copy engines (CE) separately
instead of having common receive handler. Some of the copy engines
receives different type of messages (i.e HTT/HTC/pktlog) from target.
Hence to service them accordingly, register per copy engine receive
callbacks.

Reviewed-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: register per copy engine send completion callbacks

Register send completion callbacks for every copy engines (CE) separately
instead of having common completion handler. Since some of the copy
engines delivers different type of messages, per-CE callbacks help to
service them differently.

Reviewed-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: remove transfer_id from ath10k_hif_cb::tx_completion

Pass the eid argument via skbuff control buffer.
This will make it possible to work with queues of
HTC event buffers.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: remove unused callback argument from struct ath10k_hif_cb::rx_completion

This wasn't used since forever and there are no
plans on using it.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: add memory dump debugfs interface

Add mem_val debugfs file for dumping the firmware (target) memory and also for
writing to the memory. The firmware memory is accessed through one file which
uses position of the file as the firmware memory address. For example, with dd
use skip parameter for the address.

Beucase target memory width is 32 bits it's strongly recommended to use
blocksize divisable with 4 when using this interface. For example, when using
dd use bs=4 to set the block size to 4 and remember to divide both count and
skip values with four.

To read 4 kB chunk from address 0x400000:

dd if=mem_value bs=4 count=1024 skip=1048576 | xxd -g1

To write value 0x01020304 to address 0x400400:

echo 0x01020304 | xxd -r | dd of=mem_value bs=4 seek=1048832

To read 4 KB chunk of memory and then write back after edit:

dd if=mem_value of=tmp.bin bs=4 count=1024 skip=1048576
emacs tmp.bin
dd if=tmp.bin of=mem_value bs=4 count=1024 seek=1048576

Signed-off-by: Yanbo Li <yanbol@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: add register access debugfs interface

Debugfs files reg_addr and reg_val are used for reading and writing to the
firmware (target) registers. reg_addr contains the address to be accessed,
which also needs to be set first, and reg_value is when used for reading and
writing the actual value in ASCII.

To read a value from the firmware register 0x100000:

# echo 0x100000 > reg_addr
# cat reg_value
0x00100000:0x000002d3

To write value 0x2400 to address 0x100000:

# echo 0x100000 > reg_addr
# echo 0x2400 > reg_value
#

Signed-off-by: Yanbo Li <yanbol@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: add diag_read() to hif ops

diag_read() is used for reading from firmware memory via the diagnose window.
First user will be cal_data debugfs file.

To serialise diagnostic window access and make it safe to use while firmware is
running take ce_lock both in ath10k_pci_diag_write_mem() and
ath10k_pci_diag_read_mem(). Because of that all the CE calls had to be changed
to _nolock variants.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix use of multiple blank lines

Fixes checkpatch warnings:

CHECK: Please don't use multiple blank lines

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: replace send_head() with tx_sg()

PCI is capable of handling scatter-gather lists.
This can be used to avoid copying memory.

Change the name of the callback while at to
reflect its purpose.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: decouple suspend code

Split up fw-related and hw-related suspension code.

Although we don't advertise WoW support to
mac80211 yet it's useful to keep the code in
suspend/resume hooks.

At this point there's no need to keep pci pm ops.
In case of WoW mac80211 calls ath10k_suspend()
which should take care of entering low-power mode.
In case WoW is not available mac80211 will go
through regular interface teradown and use start/stop.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: decouple pci start/stop logic

Split logic that prepares the device for BMI
phase/cleans up related resources.

This is necessary for ath10k to be able to restart
hw on the fly without reloading the module.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: rename hif callback

The `set_callbacks` is a more appopriate name for
the function. Let's leave `init` for something
else.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: mac80211 driver for Qualcomm Atheros 802.11ac CQA98xx devices

Here's a new mac80211 driver for Qualcomm Atheros 802.11ac QCA98xx devices.
A major difference from ath9k is that there's now a firmware and
that's why we had to implement a new driver.

The wiki page for the driver is:

http://wireless.kernel.org/en/users/Drivers/ath10k

The driver has had many authors, they are listed here alphabetically:

Bartosz Markowski <bartosz.markowski@tieto.com>
Janusz Dziedzic <janusz.dziedzic@tieto.com>
Kalle Valo <kvalo@qca.qualcomm.com>
Marek Kwaczynski <marek.kwaczynski@tieto.com>
Marek Puzyniak <marek.puzyniak@tieto.com>
Michal Kazior <michal.kazior@tieto.com>
Sujith Manoharan <c_manoha@qca.qualcomm.com>

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>