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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD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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powerpc pseries: Remove unused devclass arguments to DRIVER_MODULE.

powerpc pseries xics: Use devclass_find to lookup xicp devclass.

Reviewed by: jhibbits
Differential Revision: https://reviews.freebsd.org/D35083

powerpc: clean up empty lines in .c and .h files

MFHead @349234

Sponsored by: The FreeBSD Foundation

[PPC] Fix build error when POWERNV is disabled

When building a kernel supporting PSERIES but not POWERNV,
the compiler would complain about an error variable being
possibly used before being initial

[PPC] Fix build error when POWERNV is disabled

When building a kernel supporting PSERIES but not POWERNV,
the compiler would complain about an error variable being
possibly used before being initialized.

In practice, however, this should never happen. In any case, it
is now initialized to an error value.

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MFHead @348740

Sponsored by: The FreeBSD Foundation

Extract eventfilter declarations to sys/_eventfilter.h

This allows replacing "sys/eventfilter.h" includes with "sys/_eventfilter.h"
in other header files (e.g., sys/{bus,conf,cpu}.h) and reduces hea

Extract eventfilter declarations to sys/_eventfilter.h

This allows replacing "sys/eventfilter.h" includes with "sys/_eventfilter.h"
in other header files (e.g., sys/{bus,conf,cpu}.h) and reduces header
pollution substantially.

EVENTHANDLER_DECLARE and EVENTHANDLER_LIST_DECLAREs were moved out of .c
files into appropriate headers (e.g., sys/proc.h, powernv/opal.h).

As a side effect of reduced header pollution, many .c files and headers no
longer contain needed definitions. The remainder of the patch addresses
adding appropriate includes to fix those files.

LOCK_DEBUG and LOCK_FILE_LINE_ARG are moved to sys/_lock.h, as required by
sys/mutex.h since r326106 (but silently protected by header pollution prior
to this change).

No functional change (intended). Of course, any out of tree modules that
relied on header pollution for sys/eventhandler.h, sys/lock.h, or
sys/mutex.h inclusion need to be fixed. __FreeBSD_version has been bumped.

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Merge ^/head r343571 through r343711.

powerpc/powernv: Add a driver for the POWER9 XIVE interrupt controller

The XIVE (External Interrupt Virtualization Engine) is a new interrupt
controller present in IBM's POWER9 processor. It's a ve

powerpc/powernv: Add a driver for the POWER9 XIVE interrupt controller

The XIVE (External Interrupt Virtualization Engine) is a new interrupt
controller present in IBM's POWER9 processor. It's a very powerful,
very complex device using queues and shared memory to improve interrupt
dispatch performance in a virtualized environment.

This yields a ~10% performance improvment over the XICS emulation mode,
measured in both buildworld, and 'dd' from nvme to /dev/null.

Currently, this only supports native access.

MFC after: 1 month

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powerpc: Fix opaque irq data initialization

The powerpc_intr structure is not zero-initialized, so on an invariants
build would panic in the xics driver with an invalid pointer. Also fix the
xics d

powerpc: Fix opaque irq data initialization

The powerpc_intr structure is not zero-initialized, so on an invariants
build would panic in the xics driver with an invalid pointer. Also fix the
xics driver to share the private data setup code between xics_enable() and
xics_bind().

Reported by: Leonardo Bianconi

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powerpc/pseries: Cache the IPI vector to avoid the common static lookup

The IPI vector is static, and happens to be the most common interrupt by far
on some systems. Rather than searching for the i

powerpc/pseries: Cache the IPI vector to avoid the common static lookup

The IPI vector is static, and happens to be the most common interrupt by far
on some systems. Rather than searching for the interrupt every time, cache
the index.

This appears to yield a small performance boost, of about 8% reduction in
buildworld times, on my POWER9 system, when paired with r342975.

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powerpc: Add opaque 'private data' to interrupt vectors

The XICS and XIVE need extra data beyond irq and vector. Rather than
performing a separate search, it's better for the general interrupt faci

powerpc: Add opaque 'private data' to interrupt vectors

The XICS and XIVE need extra data beyond irq and vector. Rather than
performing a separate search, it's better for the general interrupt facility
to hold a private pointer, since the search already must be done anyway at
that level.

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Merge ^/head r339015 through r339669.

powerpc64/xics: Fix comment typo

MFH r339206-r339212, r339215-r339239

Sponsored by: The FreeBSD Foundation

powerpc/pseries: EOI interrupts in XICS by setting lowest priority

Discussing with Benjamin Herrenschmidt, OPAL_INT_GET_XIRR masks the
returned priority, so must be resumed before more interrupts ca

powerpc/pseries: EOI interrupts in XICS by setting lowest priority

Discussing with Benjamin Herrenschmidt, OPAL_INT_GET_XIRR masks the
returned priority, so must be resumed before more interrupts can be
handled at this priority. Since there are only two priorities used in
FreeBSD, we know that the previous priority in an EOI will always be
0xff (lowest priority).

Reviewed by: nwhitehorn
Approved by: re(rgrimes)
Differential Revision: https://reviews.freebsd.org/D17361

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Add a comment explaining the need of a global temporary variable

cpu_xirr is used only as a temporary location for the OPAL call in
PIC_DISPATCH().

Requested by: nwhitehorn

Fix build with PSERIES but not POWERNV defined.

Add support for the XIVE XICS emulation mode for POWER9 systems

Summary:
POWER9 systems use a new interrupt controller, XIVE, managed through OPAL
firmware calls. The OPAL firmware includes support

Add support for the XIVE XICS emulation mode for POWER9 systems

Summary:
POWER9 systems use a new interrupt controller, XIVE, managed through OPAL
firmware calls. The OPAL firmware includes support for emulating the previous
generation XICS presentation layer in addition to a new "XIVE Exploitation"
mode. As a stopgap until we have XIVE exploitation mode, enable XICS emulation
mode so that we at least have an interrupt controller.

Since the CPPR is local to the current CPU, it cannot be updated for APs when
initializing on the BSP. This adds a new function, directly called by the
powernv platform code, to initialize the CPPR on AP bringup.

Reviewed by: nwhitehorn
Differential Revision: https://reviews.freebsd.org/D15492

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PPC64: use hwref instead of cpuid

On CHRP and PowerNV, use the interrupt server number in the cpuref and pcpu
hwref field instead of the device-tree phandle and make the CPU IDs reported
to the sche

PPC64: use hwref instead of cpuid

On CHRP and PowerNV, use the interrupt server number in the cpuref and pcpu
hwref field instead of the device-tree phandle and make the CPU IDs reported
to the scheduler dense and with the BSP at 0.

Submitted by: Wojciech Macek <wma@semihalf.com>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies
Differential revision: https://reviews.freebsd.org/D14011

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PowerNV: XICS support for PowerNV/OPAL

Make XICS to be OPAL-aware.

Created by: Nathan Whitehorn <nwhitehorn@freebsd.org>
Submitted by: Wojciech Macek <wma@semihalf.com>
Sponsore

PowerNV: XICS support for PowerNV/OPAL

Make XICS to be OPAL-aware.

Created by: Nathan Whitehorn <nwhitehorn@freebsd.org>
Submitted by: Wojciech Macek <wma@semihalf.com>
Sponsored by: FreeBSD Foundation

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sys/powerpc: 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 - e

sys/powerpc: 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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Use our nitems() macro when param.h is available.

Replacements specific to arm, mips, pc98, powerpc and sparc64.

Discussed in: freebsd-current