Catch up with head (r291075).

Merge from head

Merge from head

Sponsored by: Gandi.net

Add etherswitch support to mge

This commit introduces support for etherswitch devices that utilize SMI as
a way of accessing its registers. SMI register is located in address space
of mge -- access

Add etherswitch support to mge

This commit introduces support for etherswitch devices that utilize SMI as
a way of accessing its registers. SMI register is located in address space
of mge -- access to it was exported through MDIO interface.

Attachment functions were enhanced so as to ensure proper initialisation
in both cases: 1) PHYs attached directly to mge, 2) PHYs attached to
switch device and switch attached to mge. Attachment of etherswitch device
depends on dts entry with compatible="mrvl,sw" property. If none is found,
typical PHY attachment procedure follows.

In case of switch attached, PHYs' status and configuration is accessible
via etherswitchcfg, and ifconfig shows always-up, non-configurable mge
interfaces.

Due to the fact that there may be simultaneous accessess to SMI
registers (e.g. from PHY attached to one of mge instances and switch
to the other), SMI access interlock was added. It is SX lock,
because sleep ability is necessary -- busy-waiting would result
in poor performance due to long delays required by hardware.
Underlying switch driver is obliged to use sleepable locks as well.

Reviewed by: adrian
Obtained from: Semihalf
Submitted by: Bartosz Szczepanek <bsz@semihalf.com>
Differential revision: https://reviews.freebsd.org/D3900

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Catch up with HEAD (r280229-r284686).

Merge sync of head

Merge from HEAD

Clean up the ARM kernel configs to use 'include<space><tab>"file"'.

MFH: r282315-r282534

Sponsored by: The FreeBSD Foundation

Move the first batch of common armv6 options to std.armv6.

Create std.arm and std.armv6 config files and include the right one from
each of the existing kernel configs. This gives a place to put config
that applies to the entire arch.

Add the ARM_NEW_PMAP

Create std.arm and std.armv6 config files and include the right one from
each of the existing kernel configs. This gives a place to put config
that applies to the entire arch.

Add the ARM_NEW_PMAP option to std.armv6. This is working well in early
testing and it's time for wide exposure, but it's still nice to be able
to fall back to the old implementation for testing when a problem comes
along. Eventually the option and the old implementation will go away.

The opportunity now exists to move a whole lot of boilerplate from all the
arm kernel config files into std.arm*, but that's a commit for another day.

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MFH: r278968-r280640

Sponsored by: The FreeBSD Foundation

Merge r278538 through r280226.

Merge from head

Merge ^/head r279759 through r279892.

Remove MODULES_OVERRIDE="" and WITHOUT_MODULES="ahc" from armv6 configs.

These are left over from long ago when there was no way to load modules
on early armv6 platforms, and when there was a build

Remove MODULES_OVERRIDE="" and WITHOUT_MODULES="ahc" from armv6 configs.

These are left over from long ago when there was no way to load modules
on early armv6 platforms, and when there was a build problem with ahc
that has long since been fixed, and they just keep getting copy-pasted
into new configs.

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MFhead @ r277403

Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

Remove "New" label from NFSCL/NFSD now that they are the only NFS
client/server. While here, remove duplicate NFSCL from sys/conf/NOTES.

Approved by: rmacklem

Switch all arm kernels with option SMP to use SCHED_ULE instead of 4BSD.

MFhead @ r276594

Merge ^/head r274961 through r276301.

tart to clean up the armv6 kernel configs by reducing the diff between
them in the first sections and the later FDT support.

Differential Revision: https://reviews.freebsd.org/D1346
Reviewed by: rpa

tart to clean up the armv6 kernel configs by reducing the diff between
them in the first sections and the later FDT support.

Differential Revision: https://reviews.freebsd.org/D1346
Reviewed by: rpaulo (earlier version)

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MFC @ r266724

An SVM update will follow this.