sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

Revert drm2 removal.

Revert r338177, r338176, r338175, r338174, r338172

After long consultations with re@, core members and mmacy, revert
these changes. Followup changes will be made to mark them a

Revert drm2 removal.

Revert r338177, r338176, r338175, r338174, r338172

After long consultations with re@, core members and mmacy, revert
these changes. Followup changes will be made to mark them as
deprecated and prent a message about where to find the up-to-date
driver. Followup commits will be made to make this clear in the
installer. Followup commits to reduce POLA in ways we're still
exploring.

It's anticipated that after the freeze, this will be removed in
13-current (with the residual of the drm2 code copied to
sys/arm/dev/drm2 for the TEGRA port's use w/o the intel or
radeon drivers).

Due to the impending freeze, there was no formal core vote for
this. I've been talking to different core members all day, as well as
Matt Macey and Glen Barber. Nobody is completely happy, all are
grudgingly going along with this. Work is in progress to mitigate
the negative effects as much as possible.

Requested by: re@ (gjb, rgrimes)

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drm2(4): Fix double-free in low-memory error path

Reallocf frees 'block'; don't attempt to free it again.

Reported by: Coverity
CID: 1091165
Sponsored by: EMC / Isilon Storage Division

Merge sync of head

Merge from HEAD

MFH: r278968-r280640

Sponsored by: The FreeBSD Foundation

Merge r278538 through r280226.

Fix build.

Reviewed by: dumbbell

drm: Update the device-independent code to match Linux 3.8.13

This update brings few features:
o Support for the setmaster/dropmaster ioctls. For instance, they
are used to run multiple

drm: Update the device-independent code to match Linux 3.8.13

This update brings few features:
o Support for the setmaster/dropmaster ioctls. For instance, they
are used to run multiple X servers simultaneously.
o Support for minor devices. The only user-visible change is a new
entry in /dev/dri but it is useless at the moment. This is a
first step to support render nodes [1].

The main benefit is to greatly reduce the diff with Linux (at the
expense of an unreadable commit diff). Hopefully, next upgrades will be
easier.

No updates were made to the drivers, beside adapting them to API
changes.

[1] https://en.wikipedia.org/wiki/Direct_Rendering_Manager#Render_nodes

Tested by: Many people
MFC after: 1 month
Relnotes: yes

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Merge from HEAD

Merge ^/head r277327 through r277718.

MFhead @ r277555

An update for the i915 GPU driver, which brings the code up to Linux
commit 4d93914ae3db4a897ead4b. Some related drm infrastructure
changes are imported as needed.

Biggest update is the rewrite of

An update for the i915 GPU driver, which brings the code up to Linux
commit 4d93914ae3db4a897ead4b. Some related drm infrastructure
changes are imported as needed.

Biggest update is the rewrite of the i915 gem io to more closely
follow Linux model, althought the mechanism used by FreeBSD port is
different.

Sponsored by: The FreeBSD Foundation
MFC after: 2 month

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Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

Merge from head@274682

Sync to HEAD@r274095.

drm: Lower priority of two messages related to invalid EDID

Like in r259717, the prority goes from "error" to "debug" to avoid
spamming logs when the connectors are polled.

MFC after: 1 week

Revert r268543.

We should probably fix sys/gpio.h instead.

Move iic.h to sys/ so that it's automatically installed in /usr/include/sys.

This lets us call iic(4) ioctls without needing the kernel source code
and follows the same model of GPIO.

MFC after: 3

Move iic.h to sys/ so that it's automatically installed in /usr/include/sys.

This lets us call iic(4) ioctls without needing the kernel source code
and follows the same model of GPIO.

MFC after: 3 weeks

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MFC @ r266724

An SVM update will follow this.

Merge head

IFC @264767

Merge head up to r262222 (last merge was incomplete).

drm: Lower priority of "EDID checksum is invalid" message

The priority goes from "error" to "debug".

Connectors are polled every 10 seconds. Reading EDID is part of this
polling. However, when an i

drm: Lower priority of "EDID checksum is invalid" message

The priority goes from "error" to "debug".

Connectors are polled every 10 seconds. Reading EDID is part of this
polling. However, when an invalid EDID is returned, this error message
is logged. When using Newcons for instance, having a kernel message
every 10 seconds is getting annoying.

Now that it's a debug message, it'll be logged only if hw.dri.debug is
enabled. This fix console spamming for some users.

Tested by: Larry Rosenman <ler@lerctr.org>

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Merge head r233826 through r256722.