newbus: replace -1 in BUS_ADD_CHILD(...-1) with DEVICE_UNIT_ANY

Sponsored by: Netflix

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remov

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

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

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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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i386: Remove unused devclass arguments to DRIVER_MODULE.

smapi: Use devclass_find to lookup smapi devclass in unload handler.

Move smapi_modevent below the declaration of smapi_driver so that
smapi_driver's name member can be used rather than hardcoding t

smapi: Use devclass_find to lookup smapi devclass in unload handler.

Move smapi_modevent below the declaration of smapi_driver so that
smapi_driver's name member can be used rather than hardcoding the
device class name.

Differential Revision: https://reviews.freebsd.org/D35064

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smapi: Store softc pointer in si_drv1 of cdev.

Rather than fetching the softc using the device's unit number as an
index into the devclass.

Differential Revision: https://reviews.freebsd.org/D35063

sys/i386: 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 - erro

sys/i386: 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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Make it explicit that D_MEM cdevsw d_flag is to signify that the
driver is (or behaves identically to) /dev/mem. Remove the D_MEM flag
from random drivers.

Note that currently the D_MEM flag does n

Make it explicit that D_MEM cdevsw d_flag is to signify that the
driver is (or behaves identically to) /dev/mem. Remove the D_MEM flag
from random drivers.

Note that currently the D_MEM flag does not affect any behaviour, but
this going to change in the next commit.

Noted and reviewed by: alc
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
X-Differential revision: https://reviews.freebsd.org/D6149

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Merge fresh head.

MFC @ r241285

IFC @ r242684

Sync from head

Add missing header needed by free(9).
Spotted by: David Wolfskill <david at catwhisker dot org>

Free result of device_get_children(9).

Merge from head

- MFC from head@196987

MFC 196403: Temporarily revert the new-bus locking for 8.0 release.

Approved by: re (kib)

Temporarily revert the new-bus locking for 8.0 release. It will be
reintroduced after HEAD is reopened for commits by re@.

Approved by: re (kib), attilio

- MFC @196061

Make the newbus subsystem Giant free by adding the new newbus sxlock.
The newbus lock is responsible for protecting newbus internIal structures,
device states and devclass flags. It is necessary to h

Make the newbus subsystem Giant free by adding the new newbus sxlock.
The newbus lock is responsible for protecting newbus internIal structures,
device states and devclass flags. It is necessary to hold it when all
such datas are accessed. For the other operations, softc locking should
ensure enough protection to avoid races.

Newbus lock is automatically held when virtual operations on the device
and bus are invoked when loading the driver or when the suspend/resume
take place. For other 'spourious' operations trying to access/modify
the newbus topology, newbus lock needs to be automatically acquired and
dropped.

For the moment Giant is also acquired in some key point (modules subsystem)
in order to avoid problems before the 8.0 release as module handlers could
make assumptions about it. This Giant locking should go just after
the release happens.

Please keep in mind that the public interface can be expanded in order
to provide more support, if there are really necessities at some point
and also some bugs could arise as long as the patch needs a bit of
further testing.

Bump __FreeBSD_version in order to reflect the newbus lock introduction.

Reviewed by: ed, hps, jhb, imp, mav, scottl
No answer by: ariff, thompsa, yongari
Tested by: pho,
G. Trematerra <giovanni dot trematerra at gmail dot com>,
Brandon Gooch <jamesbrandongooch at gmail dot com>
Sponsored by: Yahoo! Incorporated
Approved by: re (ksmith)

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Merge from HEAD

Some minor style changes:
o Convert K&R function definitions to ANSI
o Eliminate spaces/tabs that should have been deleted as part of the de__P
efforts
o Use struct thread * in preference to d_thre

Some minor style changes:
o Convert K&R function definitions to ANSI
o Eliminate spaces/tabs that should have been deleted as part of the de__P
efforts
o Use struct thread * in preference to d_thread_t *.

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Replace all calls to minor() with dev2unit().

After I removed all the unit2minor()/minor2unit() calls from the kernel
yesterday, I realised calling minor() everywhere is quite confusing.
Character d

Replace all calls to minor() with dev2unit().

After I removed all the unit2minor()/minor2unit() calls from the kernel
yesterday, I realised calling minor() everywhere is quite confusing.
Character devices now only have the ability to store a unit number, not
a minor number. Remove the confusion by using dev2unit() everywhere.

This commit could also be considered as a bug fix. A lot of drivers call
minor(), while they should actually be calling dev2unit(). In -CURRENT
this isn't a problem, but it turns out we never had any problem reports
related to that issue in the past. I suspect not many people connect
more than 256 pieces of the same hardware.

Reviewed by: kib

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Tweak the probe/attach order of devices on the x86 nexus devices.
Various BIOS-related psuedo-devices are added at an order of 5. acpi0 is
added at an order of 10, and legacy0 is added at an order o

Tweak the probe/attach order of devices on the x86 nexus devices.
Various BIOS-related psuedo-devices are added at an order of 5. acpi0 is
added at an order of 10, and legacy0 is added at an order of 11.

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