iwm: Sync with FreeBSD minus few commits (as of April 1, 2024)

Following commits were applied:

* iwm: Print the command code for any unhandled commands
https://github.com/freebsd/freebsd-src/comm

iwm: Sync with FreeBSD minus few commits (as of April 1, 2024)

Following commits were applied:

* iwm: Print the command code for any unhandled commands
https://github.com/freebsd/freebsd-src/commit/6844522a9aa848b40555fe8cc9d9d353e942f1f2

* iwm: improve rfkill handling
https://github.com/freebsd/freebsd-src/commit/22d1b05c8c37a0c9c7b391492ccd0c60835d9ea1

* iwm: fix ieee80211_media_change() caller
https://github.com/freebsd/freebsd-src/commit/c6167b4bf510d82035e8c8db3b0b074045b90916

* iwm: fix regression resp ieee80211_media_change()
https://github.com/freebsd/freebsd-src/commit/aaa1fdb87b7a9219e88f97fe0638f4ab166681e5

* iwm: Add support for Intel Killer(R) Wireless-AC
https://github.com/freebsd/freebsd-src/commit/90cc8706ccb2da130c0b1a28434a9ec5d4c80d81

* iwm: update if_iwmreg.h to the latest openbsd changes (24 Oct 2021)
https://github.com/freebsd/freebsd-src/commit/355c15130aef13484821051a655da9b9066e1015

* iwm: Update SCD register accesses
https://github.com/freebsd/freebsd-src/commit/d524e370c4dbabf607546aec6e4bcc8d64758851

* iwm: plug some of set-but-not-used vars
https://github.com/freebsd/freebsd-src/commit/35273e2099e629a3494701036184f2d152bcf7d7

* iwm: Fix -Wunused-but-set-variable warnings
https://github.com/freebsd/freebsd-src/commit/1dc8ed06f37a0d5ff4b78791885d7ba6dd3e407b

NOTE: pci_release_msi() now gets called on DragonFly in case of error!

* iwm: plug set-but-not-used vars
https://github.com/freebsd/freebsd-src/commit/f7daf710382afae9ba5824a89ef522800759c3f2

* iwm: Fix various typos and remove "$FreeBSD$"

Following commits were *not* applied:

* net80211/drivers: improve ieee80211_rx_stats for band
https://github.com/freebsd/freebsd-src/commit/9a6695532b3997e4e2bc3fe57481cc49be5e9e93

This requires (minor) changes to ieee80211

* iwm: remove unsued devclass arguments to DRIVER_MODULE
https://github.com/freebsd/freebsd-src/commit/ef463ef3dab650d08a16a08e3d12683130424752

Tested-with: Intel(R) Dual Band Wireless AC 8265

Taken-from: FreeBSD (see above)

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iwm - Full sync from FreeBSD

* Full sync from freebsd, plus add iwm-9000 and iwm-9260 support.

* Patch up some ABI changes to ieee80211_*() which we don't have
yet.

if_iwm - Add iwm_mvm_send_lq_cmd() from Linux iwlwifi to if_iwm_util.c.

Taken-From: Linux iwlwifi

if_iwm - Fix iwm_mvm_send_cmd_pdu(_status) declarations. Make id a uint32_t.

* This fixes cases where the group id of wide commands got lost, e.g. this
happened to the IWM_SCAN_ABORT_UMAC command.

if_iwm - Factor out firmware station handling into if_iwm_sta.c.

* This adds iwm_mvm_rm_sta(), which will be used to tear down firmware
state for better/cleaner iwm_newstate() handling.

* Makes i

if_iwm - Factor out firmware station handling into if_iwm_sta.c.

* This adds iwm_mvm_rm_sta(), which will be used to tear down firmware
state for better/cleaner iwm_newstate() handling.

* Makes iwm_enable_txq() and iwm_mvm_flush_tx_path() non-static, add
the declarations to if_iwm_util.h for now.

Taken-From: Linux iwlwifi

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if_iwm - Allow listening on both chains/atennas to get diversity.

* This might improve throughput slightly when far from the accesspoint,
apparently by allowing the firmware to listen on either of

if_iwm - Allow listening on both chains/atennas to get diversity.

* This might improve throughput slightly when far from the accesspoint,
apparently by allowing the firmware to listen on either of the two
antennas (if there are two, i.e. on 7260/7265/8260), whichever has
a better reception.

Taken-From: Linux iwlwifi

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if_iwm - Add the BSS's basic rates to iwm's LQ command, not all the rates.

Makes the firmware use appropriate Tx rates for ACKs.

Taken-From: OpenBSD

if_iwm - Move iwm_dma_contig_alloc/_free functions to if_iwm_util.c.

if_iwm - Sync valid_tx_ant and valid_rx_ant mask handling with iwlwifi.

* This fixes the phy_cfg field sent in the iwm_send_phy_cfg_cmd()
command, which wasn't taking into account the valid_rx_ant

if_iwm - Sync valid_tx_ant and valid_rx_ant mask handling with iwlwifi.

* This fixes the phy_cfg field sent in the iwm_send_phy_cfg_cmd()
command, which wasn't taking into account the valid_rx_ant and
valid_tx_ant masks from nvm_data before.

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if_iwm - Update to support version 16 firmware.

* XXX The firmware always signals missed beacons, and doesn't give us
statistics notifications.

Taken-From: OpenBSD

wlan - Import if_iwm from FreeBSD (base)