libkern: add ilog2 macro

The kernel source contains several definitions of an ilog2 function;
some are slower than necessary, and one of them is incorrect.
Elimininate them all and define an ilog2 m

libkern: add ilog2 macro

The kernel source contains several definitions of an ilog2 function;
some are slower than necessary, and one of them is incorrect.
Elimininate them all and define an ilog2 macro in libkern to replace
them, in a way that is fast, correct for all argument types, and, in a
GENERIC kernel, includes a check for an invalid zero parameter.

Folks at Microsoft have verified that having a correct ilog2
definition for their MANA driver doesn't break it.

Reviewed by: alc, markj, mhorne (older version), jhibbits (older version)
Differential Revision: https://reviews.freebsd.org/D45170
Differential Revision: https://reviews.freebsd.org/D45235

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sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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cxgbe(4): make the logging helpers a little more robust.

MFC after: 3 days
Sponsored by: Chelsio Communications

Merge ^/head r343320 through r343570.

cxgbe(4): Add adapter information to messages logged by the OS-agnostic
code in t4_hw.c.

MFC after: 1 week
Sponsored by: Chelsio Communications

MFH r338661 through r339200.

Sponsored by: The FreeBSD Foundation

Merge ^/head r338731 through r338987.

cxgbe(4): Link related changes.

- Switch to using 32b port/link capabilities in the driver. The 32b
format is used internally by firmwares > 1.16.45.0 and the driver will
now interact with the

cxgbe(4): Link related changes.

- Switch to using 32b port/link capabilities in the driver. The 32b
format is used internally by firmwares > 1.16.45.0 and the driver will
now interact with the firmware in its native format, whether it's 16b
or 32b. Note that the 16b format doesn't have room for 50G, 200G, or
400G speeds.

- Add a bit in the pause_settings knobs to allow negotiated PAUSE
settings to override manual settings.

- Ensure that manual link settings persist across an administrative
down/up as well as transceiver unplug/replug.

- Remove unused is_*G_port() functions.

Approved by: re@ (gjb@)
MFC after: 1 month
Sponsored by: Chelsio Communications

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cxgbe(4): Remove homemade version of htobe32 from the driver.

It was needed only for ia64 where it was implemented as a call to
bswapXX, which was always a real function. htobeXX with a constant
ar

cxgbe(4): Remove homemade version of htobe32 from the driver.

It was needed only for ia64 where it was implemented as a call to
bswapXX, which was always a real function. htobeXX with a constant
argument is calculated at compile-time everywhere else.

MFC after: 1 week
Sponsored by: Chelsio Communications

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sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error

sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

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MFH

Sponsored by: The FreeBSD Foundation

cxgbe(4): Remove __devinit and SPEED_<foo> as part of catch up with
internal shared code.

Obtained from: Chelsio Communications

cxgbe(4): Updates to the shared routines that deal with the serial EEPROM,
flash, and VPD.

Obtained from: Chelsio Communications

Merge head r233826 through r256722.

IFC @256277

Approved by: ken (mentor)

IFC @ r255692

Comment out IA32_MISC_ENABLE MSR access - this doesn't exist on AMD.
Need to sort out how arch-specific MSRs will be handled.

Merge from head

IFC @ r255209

MFC

Add hooks in base cxgbe(4) for the iWARP upper-layer driver. Update a
couple of assertions in the TOE driver as well.

IFC @ r254014

IFC @253398

Merge fresh head.

cxgbe(4): Some updates to shared code.

Obtained from: Chelsio
MFC after: 1 week