wifi: mt76: mt792x: fix ethtool warning

Add a missing EHT related field to fix the following ethtool warning:
[98179.287352] mt7921e 0003:01:00.0: ei: 74 SSTATS_LEN: 73

Fixes: c74df1c067f2 ("wifi: mt76: mt792x: introduce mt792x-lib module")
Signed-off-by: Gen Xu <genxu6@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

wifi: mac80211: simplify non-chanctx drivers

There are still surprisingly many non-chanctx drivers, but in
mac80211 that code is a bit awkward. Simplify this by having
those drivers assign 'emulated' ops, so that the mac80211 code
can be more unified between non-chanctx/chanctx drivers. This
cuts the number of places caring about it by about 15, which
are scattered across - now they're fewer and no longer in the
channel context handling.

Link: https://msgid.link/20240129194108.6d0ead50f5cf.I60d093b2fc81ca1853925a4d0ac3a2337d5baa5b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

wifi: fill in MODULE_DESCRIPTION()s for mt76 drivers

W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the MediaTek mt76 drivers.

Here is a sorted list of descriptions. It might make the reviewing
process easier.

MODULE_DESCRIPTION("MediaTek MT7603E and MT76x8 wireless driver");
MODULE_DESCRIPTION("MediaTek MT7615E and MT7663E wireless driver");
MODULE_DESCRIPTION("MediaTek MT7615E MMIO helpers");
MODULE_DESCRIPTION("MediaTek MT7663 SDIO/USB helpers");
MODULE_DESCRIPTION("MediaTek MT7663S (SDIO) wireless driver");
MODULE_DESCRIPTION("MediaTek MT7663U (USB) wireless driver");
MODULE_DESCRIPTION("MediaTek MT76x02 helpers");
MODULE_DESCRIPTION("MediaTek MT76x02 MCU helpers");
MODULE_DESCRIPTION("MediaTek MT76x0E (PCIe) wireless driver");
MODULE_DESCRIPTION("MediaTek MT76x0U (USB) wireless driver");
MODULE_DESCRIPTION("MediaTek MT76x2 EEPROM helpers");
MODULE_DESCRIPTION("MediaTek MT76x2E (PCIe) wireless driver");
MODULE_DESCRIPTION("MediaTek MT76x2U (USB) wireless driver");
MODULE_DESCRIPTION("MediaTek MT76x connac layer helpers");
MODULE_DESCRIPTION("MediaTek MT76x EEPROM helpers");
MODULE_DESCRIPTION("MediaTek MT76x helpers");
MODULE_DESCRIPTION("MediaTek MT76x SDIO helpers");
MODULE_DESCRIPTION("MediaTek MT76x USB helpers");
MODULE_DESCRIPTION("MediaTek MT7915E MMIO helpers");
MODULE_DESCRIPTION("MediaTek MT7921 core driver");
MODULE_DESCRIPTION("MediaTek MT7921E (PCIe) wireless driver");
MODULE_DESCRIPTION("MediaTek MT7921S (SDIO) wireless driver");
MODULE_DESCRIPTION("MediaTek MT7921U (USB) wireless driver");
MODULE_DESCRIPTION("MediaTek MT7925 core driver");
MODULE_DESCRIPTION("MediaTek MT7925E (PCIe) wireless driver");
MODULE_DESCRIPTION("MediaTek MT7925U (USB) wireless driver");
MODULE_DESCRIPTION("MediaTek MT792x core driver");
MODULE_DESCRIPTION("MediaTek MT792x USB helpers");
MODULE_DESCRIPTION("MediaTek MT7996 MMIO helpers");

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240130104243.3025393-10-leitao@debian.org

wifi: mt76: mt792x: move some common usb code in mt792x module

Move the following shared usb routines in mt792x module:
- mt792xu_stop
- mt792x_stop

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

wifi: mt76: move struct ieee80211_chanctx_conf up to struct mt76_vif

Move struct ieee80211_chanctx_conf up to struct mt76_vif to allow the
connac2 library can access the struct ieee80211_chanctx_conf * member in
struct mt76_vif.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Reviewed-by: David Ruth <druth@chromium.org>
Tested-by: David Ruth <druth@chromium.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

wifi: mt76: fix clang-specific fortify warnings

When compiling with clang 16.0.6 and CONFIG_FORTIFY_SOURCE=y, I've
noticed the following (somewhat confusing due to absence of an actual
source code location):

In file included from drivers/net/wireless/mediatek/mt76/mt792x_core.c:4:
In file included from ./include/linux/module.h:13:
In file included from ./include/linux/stat.h:19:
In file included from ./include/linux/time.h:60:
In file included from ./include/linux/time32.h:13:
In file included from ./include/linux/timex.h:67:
In file included from ./arch/x86/include/asm/timex.h:5:
In file included from ./arch/x86/include/asm/processor.h:23:
In file included from ./arch/x86/include/asm/msr.h:11:
In file included from ./arch/x86/include/asm/cpumask.h:5:
In file included from ./include/linux/cpumask.h:12:
In file included from ./include/linux/bitmap.h:11:
In file included from ./include/linux/string.h:254:
./include/linux/fortify-string.h:592:4: warning: call to '__read_overflow2_field'
declared with 'warning' attribute: detected read beyond size of field (2nd
parameter); maybe use struct_group()? [-Wattribute-warning]
__read_overflow2_field(q_size_field, size);

In file included from drivers/net/wireless/mediatek/mt76/mt7915/main.c:4:
In file included from ./include/linux/etherdevice.h:20:
In file included from ./include/linux/if_ether.h:19:
In file included from ./include/linux/skbuff.h:15:
In file included from ./include/linux/time.h:60:
In file included from ./include/linux/time32.h:13:
In file included from ./include/linux/timex.h:67:
In file included from ./arch/x86/include/asm/timex.h:5:
In file included from ./arch/x86/include/asm/processor.h:23:
In file included from ./arch/x86/include/asm/msr.h:11:
In file included from ./arch/x86/include/asm/cpumask.h:5:
In file included from ./include/linux/cpumask.h:12:
In file included from ./include/linux/bitmap.h:11:
In file included from ./include/linux/string.h:254:
./include/linux/fortify-string.h:592:4: warning: call to '__read_overflow2_field'
declared with 'warning' attribute: detected read beyond size of field (2nd
parameter); maybe use struct_group()? [-Wattribute-warning]
__read_overflow2_field(q_size_field, size);

In file included from drivers/net/wireless/mediatek/mt76/mt7996/main.c:6:
In file included from drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h:9:
In file included from ./include/linux/interrupt.h:8:
In file included from ./include/linux/cpumask.h:12:
In file included from ./include/linux/bitmap.h:11:
In file included from ./include/linux/string.h:254:
./include/linux/fortify-string.h:592:4: warning: call to '__read_overflow2_field'
declared with 'warning' attribute: detected read beyond size of field (2nd
parameter); maybe use struct_group()? [-Wattribute-warning]
__read_overflow2_field(q_size_field, size);

The compiler actually complains on 'mt7915_get_et_strings()',
'mt792x_get_et_strings()' and 'mt7996_get_et_strings()' due to the same
reason: fortification logic inteprets call to 'memcpy()' as an attempt
to copy the whole array from its first member and so issues an overread
warning. These warnings may be silenced by passing an address of the whole
array and not the first member to 'memcpy()'.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

wifi: mt76: fix race condition related to checking tx queue fill status

When drv_tx calls race against local tx scheduling, the queue fill status checks
can potentially race, leading to dma queue entries being overwritten.
Fix this by deferring packets from drv_tx calls to the tx worker, in order to
ensure that all regular queue tx comes from the same context.

Reported-by: Ryder Lee <Ryder.Lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

wifi: mt76: mt792x: move mt7921_load_firmware in mt792x-lib module

mt7921_load_firmware routine is shared between mt7921 and mt7925 chipset
so move it in mt792x-lib module.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

wifi: mt76: mt7921: move runtime-pm pci code in mt792x-lib

Move the following runtime-pm pci routines in mt792x-lib since they are
shared between mt7921 and mt7925 chipsets:
- __mt7921e_mcu_drv_pmctrl
- mt7921e_mcu_drv_pmctrl
- mt7921e_mcu_fw_pmctrl

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

wifi: mt76: mt7921: move shared runtime-pm code on mt792x-lib

Moving hif_ops marcos in mt792x.h, we can move shared runtime-pm code
between mt7925 and mt7921 in mt792x-lib module.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

wifi: mt76: mt792x: move more dma shared code in mt792x_dma

Rely on irq_map support, move more dma shared code between mt7921 and
mt7925 in mt792x_dma.c
Move the following dma code in mt792x-lib
- mt792x_dma_enable
- mt792x_dma_reset
- mt792x_wpdma_reset
- mt792x_wpdma_reinit_cond

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

wifi: mt76: mt7921: move init shared code in mt792x-lib module

Reduce duplicated code moving init shared code in mt792x-lib module.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

wifi: mt76: mt7921: move dma shared code in mt792x-lib module

Reduce duplicated code moving dma shared code in mt792x-lib module.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

wifi: mt76: mt792x: introduce mt792x-lib module

mt792x-lib module will contain the shared code between mt7921 and new
MT79 WiFi7 chipset

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>