Sync iwm against dfbsd

[kbowling]

Summary

Large diff reduction to DragonFly BSD git 55a262956d059036136c7a461ddc79bff2f67363, adds 8260 support, updates everything to firmware version 16

Firmware patch necessary: http://kev009.com/freebsd/iwm-fw.patch

Test Plan

Test on iwm devices

[kbowling]

It seems to go through 2 watchdog resets on boot while scanning/associating, then is fairly reliable. I've now passed a few gigabytes over the 8260 w/o hiccups.

[avos]

sys/dev/iwm/if_iwm.c

1990 ↗

(On Diff #17887)

This change is not needed (see rS298818 and rS299883)

[kbowling]

Address Andriy's comment on accidentally removing rS299883.

Bring in iwm_led callout stop change from https://lists.freebsd.org/pipermail/freebsd-wireless/2016-June/006805.html and ensure nothing is missed from Emmanuel Vadot's port, we did essentially the same thing but I left linux filename comments in, stripped dfbsd ifdefs.

[avos]

Looks fine for me (however, I have no device to test with).

sys/dev/iwm/if_iwm.c

4028 ↗

(On Diff #17903)

Sure? tx->data_retry_limit/tx->rts_retry_limit + ic->ic_htprotmode should work better (just a note; now this code is noop anyway)

[woodsb02]

I haven't looked at this patch in detail, but I thought I would point out the obvious, that manu's work changed some additional files required to update the firmware - as you alluded to in your original comment above:

• Each of the firmware files locations in sys/contrib/dev/iwm/ were updated
• Each of the Makefiles in the directory sys/modules/iwmfw and sub-directories, to register the new firmware file for iwm8000 and update the revision of the other firmware files.

https://github.com/freebsd/freebsd/compare/master...evadot:iwm

[kbowling]

In D6967#146218, @woodsb02 wrote:

I haven't looked at this patch in detail, but I thought I would point out the obvious, that manu's work changed some additional files required to update the firmware - as you alluded to in your original comment above:

Please see the summary at the top of the review for the firmware patch. It is 10MB of data so I cannot upload it to Phabricator and the changes are pretty simple.

[adrian]

ok, I'll go commit some variant of this soon, piecemeal.

[lifanov_mail.lifanov.com]

What's the status of this landing?

[sbruno]

firmware update patch is in head now. How do we want to proceed here?

Does D5054 block this?

[lifanov_mail.lifanov.com]

Woo, thank you!

[sbruno]

In D6967#152147, @lifanov_mail.lifanov.com wrote:

Woo, thank you!

Hopefully, this improves FreeBSD for you. Let me know if things aren't right.