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: mt76_usb.mt76u_mcu.burst is always false remove related code

Simplify mt76x02u_multiple_mcu_reads routine since burst is always
false.

Signed-off-by: Gergo Koteles <soyer@irl.hu>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: mt76x02u: fix possible memory leak in __mt76x02u_mcu_send_msg

Free the skb if mt76u_bulk_msg fails in __mt76x02u_mcu_send_msg routine.

Fixes: 4c89ff2c74e39 ("mt76: split __mt76u_mcu_send_msg and mt76u_mcu_send_msg routines")
Co-developed-by: Gergo Koteles <soyer@irl.hu>
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: implement .mcu_parse_response in struct mt76_mcu_ops

Do not free skb inside that function
Preparation for further cleanup

Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: mt76u: add missing release on skb in __mt76x02u_mcu_send_msg

In the implementation of __mt76x02u_mcu_send_msg() the skb is consumed
all execution paths except one. Release skb before returning if
test_bit() fails.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: add headroom and tailroom to mt76_mcu_ops data structure

Introduce headroom and tailroom to mt76_mcu_ops data structure in order
to unify the routine used for mcu message allocation. This is a
preliminary patch to add mt7663u support

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

mt76: Introduce mt76_mcu data structure

Introduce mt76_mcu data structure to contain common fields between
mt76u_mcu and mt76e_mcu.
Initialize mcu common fields in mt76_alloc_device().
Rely on mt76_mcu in mt76_mcu_rx_event and in mt76_mcu_get_response
in order to reuse them in usb code

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

mt76: mt76u: add endpoint to mt76u_bulk_msg signature

This is a preliminary patch to support mt7663u usb dongles

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: move state from struct mt76_dev to mt76_phy

Allows keeping per-wiphy state separate

Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: switch to SPDX tag instead of verbose boilerplate text

No functional change intended.

Add SPDX identifiers to all remaining files in /mt76.

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

mt76usb: use synchronous msg for mcu command responses

Use usb_bulk_msg for reading MCU command responses. This simplify code
a lot.

Together with 97a3005759c ("mt76usb: allow mt76u_bulk_msg be used
for reads") it also fix possible problems with rx data buffers
not being aligned and contained within single page. After doing
page_frag_alloc(1024) consecutive page_frag_alloc(PAGE_SIZE) will
alloc PAGE_SIZE buffer at PAGE_SIZE - 1024 offset.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76usb: allow mt76u_bulk_msg be used for reads

Extend mt76u_bulk_msg() such it can be used for synchronous bulk reads.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: usb: do not use sg buffers for mcu messages

Do not use scatter-gather buffers for mcu commands.
Introduce mt76u_buf_alloc and mt76u_buf_alloc_sg routines.

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

mt76x02u: use usb_bulk_msg to upload firmware

We don't need to send firmware data asynchronously, much simpler is just
use synchronous usb_bulk_msg().

Tested-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: move mt76_mcu_msg_alloc in mt76-core

Move mt76_mcu_msg_alloc in mt76-core module and remove duplicated code.
mt76_mcu_msg_alloc will be reused adding support for mt7603 driver

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: remove mcu_msg_alloc

We almost always use patter like this:

skb = mt76_mcu_msg_alloc(dev, &msg, sizeof(msg));
return mt76_mcu_send_msg(dev, skb, CMD_FUN_SET_OP, wait_resp);

This is not needed, we can allocate skb in mcu_send_msg routine.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: use mt76x02_dev instead of mt76_dev in mt76x02_usb_mcu.c

Use mt76x02_dev data structure as reference in mt76x02_usb_mcu.c
instead of mt76_dev

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: include linux/module.h in files using MODULE_*

Fix source files using MODULE_* macros without including linux/module.h

Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76x02: move TXD/RXD/MCU definitions in mt76x02_dma.h

Introduce mt76x02_dma.h header file to contain mt76x02 dma
related definitions

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: usb: move mt76u_skb_dma_info in mt76x02_usb_core.c

Move mt76u_skb_dma_info routine in mt76x02-usb module and rename it in
mt76x02u_skb_dma_info. Moreover move mt76x02u_set_txinfo in
mt76x02_usb_core.c. This is a preliminary patch to move MT_TXD_INFO,
MT_MCU_MSG and MT_RX_FCE_INFO defs in mt76x02-lib module since other
chipsets (e.g. mt7603) use different dma definitions

Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt76: usb: move mt76x02 mcu code in mt76x02-usb module

Introduce mt76x02_usb_mcu.c in order to contain mt76x02u mcu related
code. Add mt76x02-usb module as a container for mt76x02 usb code.
This is a preliminary patch to move MT_TXD_INFO, MT_MCU_MSG and
MT_RX_FCE_INFO defs in mt76x02-lib module since other chipsets (e.g.
mt7603) use different dma definitions

Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>