MFC r327231,r327232:

kernel: Fix several typos and minor errors
lib: Fix several typos and minor errors

- duplicate words
- typos
- references to old versions of FreeBSD

MFC r321511:

[iwm] Sync rs (rate-selection) API definitions from Linux iwlwifi.

* While there clean up alignments and line wrapping in existing
definitions for rs API in if_iwmreg.h

MFC r321509:

[iwm] Sync statistics API definitions with Linux iwlwifi.

MFC r319589:

[iwm] Remove support for fw older than -17 and -22

* iwm(4) didn't use any of these definitions yet, anyway.

MFC r319581:

[iwm] Set command code for PHY_DB as well.

MFC r319579:

[iwm] Remove dead code from iwm_pcie_load_cpu_sections().

* If device family is 8000 then iwm_pcie_load_cpu_sections()
won't be called at all (iwm_pcie_load_cpu_sections_8000() is
called in that case) so this piece of code never gets called.

MFC r318218:

[iwm] Process multiple frames per RX buffer.

* Factor out iwm_handle_rxb() function from iwm_notif_intr().

* Removing the IWM_FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK flag allows
the device to put multiple frames (both command responses and 80211
frames) into a single RX buffer.

* Uses m_copym() to split up the receive buffers when multiple 80211
frames are received in one RX buffer. The effect is basically the same
as when using m_split(), but we want to keep the original mbuf around
when calling iwm_mvm_rx_rx_mpdu() to make error handling a bit easier
for now.

* Contains a small optimization to avoid the m_copym() when only a single
80211 frame is received in one RX buffer (i.e. matching the existing
behaviour).

MFC r318217:

[iwm] Change UCODE_TLV_API #define-s from bitmasks to indexes.

* Fixes oversight from commit 757eecf0e6c92745aa2eee95811e573c8300850e.
fw_has_api now uses the isset macro instead of a simple logical-and.

MFC r318005:

[iwm] Add basic powermanagement support via ifconfig wlan0 powersave.

* The DEVICE_POWER_FLAGS_CAM_MSK flag was removed in the upstream iwlwifi
in Linux commit ceef91c89480dd18bb3ac51e91280a233d0ca41f.

* Add sc_ps_disabled flag to struct iwm_softc, which corresponds to
mvm->ps_disabled in struct iwl_mvm in Linux iwlwifi.

* Adds a hw.iwm.power_scheme tunable which corresponds to the power_scheme
module parameter in Linux iwlwifi. Set this to 1 for completely
disabling power management, 2 (default) for balanced powermanagement,
and 3 for lowerpower mode (which does dtim period skipping).

* Imports the constants.h file from iwlwifi as if_iwm_constants.h.

* This doesn't allow changing the powermanagement setting while connected,
also one can only choose between enabled and disabled powersaving with
ifconfig (so switching between balanced and low-power mode requires
rebooting to change the tunable).

* After any changes to powermanagement (i.e. "ifconfig wlan0 powersave" to
enable powermanagement, or "ifconfig wlan0 -powersave" for disabling
powermanagement), one has to disconnect and reconnect to the accespoint
for the change to take effect.

MFC r315780:

[iwm] Remove a couple of unneeded IWM_UCODE_TLV_FLAGS_* flags.

* All the supported firmwares have these flags set.

* This removes the following flags:
IWM_UCODE_TLV_FLAGS_PM_CMD_SUPPORT,
IWM_UCODE_TLV_FLAGS_NEWBT_COEX,
IWM_UCODE_TLV_FLAGS_BF_UPDATED,
IWM_UCODE_TLV_FLAGS_D3_CONTINUITY_API,
IWM_UCODE_TLV_FLAGS_STA_KEY_CMD,
IWM_UCODE_TLV_FLAGS_DEVICE_PS_CMD,
IWM_UCODE_TLV_FLAGS_SCHED_SCAN,
IWM_UCODE_TLV_FLAGS_RX_ENERGY_API,
IWM_UCODE_TLV_FLAGS_TIME_EVENT_API_V2

* Also remove definitions and code for dealing with the v1 time-event api.

* Remove unneeded calc_rssi() function.

MFC r314192,r314209:

[iwm] Add support for Firmware paging, needed for newer 8000C firmware.

* Uses the IWM_FW_PAGING_BLOCK_CMD firmware command to tell the firmware
what memory ranges to use for paging.

MFC r314066:

[iwm] Sync IWM_MVM_ALIVE waiting and start_fw handling with iwlwifi.

* Use the notification wait API, like it's done in the Linux iwlwifi code,
to wait for the IWM_MVM_ALIVE notification.

* This also should fix some firmware load interrupt issues, and errors
in the nic lock using.

Tested:

* (adrian) Intel 7260, STA mode

MFC r313427:

[iwm] Recognize the IWM_UCODE_TLV_FW_MEM_SEG firmware section type.

* Will be needed for loading version 22 of 7265D firmware.

MFC r313418:

[iwm] Recognize IWM_DTS_MEASUREMENT_NOTIF_WIDE notification.

* Add the command groups enum, and the iwm_phy_ops_subcmd_ids enum
to if_iwmreg.h definitions.

* The IWM_DTS_MEASUREMENT_NOTIF_WIDE notification will be generated by
version 17 firmware.

Taken-From: Linux iwlwifi

MFC r313417:

[iwm] Very basic DTS thermal sensor support (prints temp as debug msg).

* Adds IWM_DEBUG_TEMP debug message type, for printing messages related
to temperature sensors and thermal/TDP infos.

* The firmware regularly sends us DTS measurement notifications, so just
print the temperature value as a debugging message.

(Adrian's addition):

* Eventually this can be used by the driver to limit transmit rate / power to
try and do some thermal throttling.

MFC r313315,r313316:

[iwm] Get rid of some gratuitous constant renaming wrt. Linux iwlwifi.

* IWM_UCODE_SECT_MAX -> IWM_UCODE_SECTION_MAX

* IWM_UCODE_TYPE_* -> IWM_UCODE_* (except for IWM_UCODE_TYPE_MAX which
stays).

[iwm] Store paging_mem_size field in firmware image information struct.

MFC r313311:

[iwm] Sync nvm parsing code with Linux iwlwifi.

* sc->sc_nvm becomes sc->nvm_data and is now a pointer instead of an
inlined struct.

* Add sc->eeprom_size and sc->nvm_hw_section_num configuration values to
struct iwm_softc.

* For now continue to avoid negative error return-values, and use pointer
variables for some return values, as before.

* Continue to omit LAR (location aware regulatory) related code as well.

Tested:

* Intel 7260, STA mode (2GHz)

MFC r313309:

[iwm] Sync if_iwm_phy_db code with Linux iwlwifi.

MFC r313308:

[iwm] The HW Revision stepping constants should be in if_iwmreg.h.

MFC r306005:

[iwm] Use IWM_DEFAULT_SCAN_CHANNELS define as default for sc_capa_n_scan_channels.

MFC r306004:

[iwm] Remove deprecated scan API definitions.

* This removes deprecated scan API definitions, which have been unused
since the upgrade to version 16 firmware in change r303327.

* Part of this change matches the header-file changes in Linux git commit
1f9403863c080478ad78247c89b018e95bdfb027.

* No functional change.

MFC r306000

[iwm] Remove unused field from iwm_rx_data. Use uint32_t instead of enum type.

The wantresp field in struct iwm_rx_data has never been used for anything,
so we can just delete it.

Apparently struct iwm_sf_cfg_cmd was compiled correctly (using a 32bit
value to represent the enum), but it still seems like a very bad idea to use
an enum type in a __packed struct.

MFC r304891:

iwm: fix few comment typos.

MFC r305470:

iwm: fix scanning for hidden SSIDs.

Setup SSIDs in scan command so firmware will send direct probe request(s)
while scanning.

Tested by: dbkirk@gmail.com

PR: 211519

MFC r303322,303326,303327,303345,303413,303416,303418,303557

Update iwm(4) and iwmfw(4) to current in order to stabilize and improve
functionality.

Approved by: re (gjb)