Replace calls to bus_generic_attach with bus_attach_children

Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D47675

miibus: Use a bus_child_deleted method to free ivars for children

If a device was detached (e.g. via devctl) and then re-attached, the
ivars would be freed by the previous bus_child_detached method

miibus: Use a bus_child_deleted method to free ivars for children

If a device was detached (e.g. via devctl) and then re-attached, the
ivars would be freed by the previous bus_child_detached method during
detach, but device_get_ivars during the subsequent attach would return
a stale pointer resulting in a use after free.

Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D47371

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newbus: globally replace device_add_child(..., -1) with DEVICE_UNIT_ANY

Sponsored by: Netflix

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

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

spdx: The BSD-2-Clause-NetBSD identifier is obsolete, drop -NetBSD

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

spdx: The BSD-2-Clause-NetBSD identifier is obsolete, drop -NetBSD

The SPDX folks have obsoleted the BSD-2-Clause-NetBSD 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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Remove unused miibus_devclass and miibus_fdt_devclass.

newbus: add bus_topo_assert

Add bus_topo_assert() and implmement it as GIANT_REQUIRED for the
moment. This will allow us to change more easily to a newbus-specific
lock int he future.

Sponsored by:

newbus: add bus_topo_assert

Add bus_topo_assert() and implmement it as GIANT_REQUIRED for the
moment. This will allow us to change more easily to a newbus-specific
lock int he future.

Sponsored by: Netflix
Reviewed by: wulf, mav, jhb
Differential Revision: https://reviews.freebsd.org/D31833

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miibus: Add support for mapping OFW nodes to PHY devices

Create a new miibus OFW specific layer leveraging miibus_fdt.c code.
PHY drivers can than read the properties using device_get_property(9) AP

miibus: Add support for mapping OFW nodes to PHY devices

Create a new miibus OFW specific layer leveraging miibus_fdt.c code.
PHY drivers can than read the properties using device_get_property(9) API.
Resource(interrupt) allocation is also supported.
In order to enable this each NIC/switch driver will have to be modified,
because of how miibus is attached to the parent driver.

Obtained from: Semihalf
Sponsored by: Alstom Group
Differential revision: https://reviews.freebsd.org/D32812

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newbus: Move from bus_child_{pnpinfo,location}_src to bus_child_{pnpinfo,location} with sbuf

Now that the upper layers all go through a layer to tie into these
information functions that translates

newbus: Move from bus_child_{pnpinfo,location}_src to bus_child_{pnpinfo,location} with sbuf

Now that the upper layers all go through a layer to tie into these
information functions that translates an sbuf into char * and len. The
current interface suffers issues of what to do in cases of truncation,
etc. Instead, migrate all these functions to using struct sbuf and these
issues go away. The caller is also in charge of any memory allocation
and/or expansion that's needed during this process.

Create a bus_generic_child_{pnpinfo,location} and make it default. It
just returns success. This is for those busses that have no information
for these items. Migrate the now-empty routines to using this as
appropriate.

Document these new interfaces with man pages, and oversight from before.

Reviewed by: jhb, bcr
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D29937

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mii(4): Fix ivars leak when the bus device or bus children detach.

PR: 242727
Submitted by: ghuckriede@blackberry.com
MFC after: 1 week

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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Merge sync of head

Merge from HEAD

Merge ^/head r277327 through r277718.

MFhead @ r277555

Typo: ivalid -> invalid.

MFhead @ r277403

Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Clean some dead code.

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

In miibus(4) drivers provide functions that allow to get NIC
driver name and NIC driver softc via the device(9) tree,
instead of going dirty through the ifnet(9) layer.

Differential Revision: D1506

In miibus(4) drivers provide functions that allow to get NIC
driver name and NIC driver softc via the device(9) tree,
instead of going dirty through the ifnet(9) layer.

Differential Revision: D1506
Reviewed by: imp, jhb

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Merge from head@274682

IFC @r271694

Sync to HEAD@r271160.

IFC @r269962

Submitted by: Anish Gupta (akgupt3@gmail.com)