Finish merging from head, messed up in previous attempt

Catch up with head, primarily for the 1.14.4.0 firmware.

Merge ^/head r286422 through r286684.

Merge from HEAD

Treat internal bridge as subtractive on ThunderX ARM64

Internal bridges in Cavium ThunderX SoC behave as subtractive,
but they are unable to be identified. Force setting an appropriate
flag.

Review

Treat internal bridge as subtractive on ThunderX ARM64

Internal bridges in Cavium ThunderX SoC behave as subtractive,
but they are unable to be identified. Force setting an appropriate
flag.

Reviewed by: emaste, imp
Obtained from: Semihalf
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3277

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Catch up with HEAD (r280229-r284686).

Revert previous change. The magical constants can't be changed
(easily) without having to go to other drivers to change the
magical return values. This wouldn't be so bad if there were
proper defines

Revert previous change. The magical constants can't be changed
(easily) without having to go to other drivers to change the
magical return values. This wouldn't be so bad if there were
proper defines for these constants.

In particular dev/acpica/acpi_pcib_pci.c returns -1000 as the
probe priority and it's expected that this driver gets to
attach over the common PCI bus drivers.

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Don't return -10000 as the probe priority. That's lower than what
BUS_PROBE_HOOVER is. Drivers like proto(4), when compiled into the
kernel or preloaded, will render your system useless by virtue of

Don't return -10000 as the probe priority. That's lower than what
BUS_PROBE_HOOVER is. Drivers like proto(4), when compiled into the
kernel or preloaded, will render your system useless by virtue of
attaching to your PCI busses.

Return BUS_PROBE_GENERIC instead. It's just the next priority up
from BUS_PROBE_HOOVER. No other meaning has been give to its use.
While BUS_PROBE_DEFAULT seems like a better candidate, it's hard
not to think that there must be some reason why these drivers
return -10000 in the first place.

Differential Revision: D2705

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MFH: r282615-r283655

Sponsored by: The FreeBSD Foundation

Merge sync of head

Add a PCI bridge for the Freescale PCIe Root Complex

Summary:
The Freescale PCIe Root Complex shows up as a Processor class device, PowerPC
subclass, so the generic PCI code ignores it for a bridge.

Add a PCI bridge for the Freescale PCIe Root Complex

Summary:
The Freescale PCIe Root Complex shows up as a Processor class device, PowerPC
subclass, so the generic PCI code ignores it for a bridge. This adds support
for it.

As part of this, update the Freescale PCI hostbridge driver, to allow probing
beyond the root complex, instead of only allowing "proper" PCI-PCI bridges.

Reviewers: #powerpc, marcel, nwhitehorn

Reviewed By: nwhitehorn

Subscribers: imp

Differential Revision: https://reviews.freebsd.org/D2442

Relnotes: yes

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Merge from head

MFH: r281855-r282312

Sponsored by: The FreeBSD Foundation

Update the pci_cfg_save/restore routines to operate on bridge devices
(type 1 and type 2) as well as leaf devices (type 0). In particular,
this allows the existing PCI bus logic to save and restore

Update the pci_cfg_save/restore routines to operate on bridge devices
(type 1 and type 2) as well as leaf devices (type 0). In particular,
this allows the existing PCI bus logic to save and restore capability
registers such as MSI and PCI-express work for bridge devices rather than
requiring that code to be duplicated in bridge drivers. It also means
that bridge drivers no longer need to save and restore basic registers
such as the PCI command register or BARs nor manage powerstates for the
bridge device.

While here, pci_setup_secbus() has been changed to initialize the 'sec'
and 'sub' fields in the 'secbus' structure instead of requiring the pcib
and pccbb drivers to do this in the NEW_PCIB + PCI_RES_BUS case.

Differential Revision: https://reviews.freebsd.org/D2240
Reviewed by: imp, jmg
MFC after: 2 weeks

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Don't explicitly manage power states for PCI-PCI bridge devices in the
driver's suspend and resume routines. These have been redundant no-ops
since r214065 changed the PCI bus driver to manage power

Don't explicitly manage power states for PCI-PCI bridge devices in the
driver's suspend and resume routines. These have been redundant no-ops
since r214065 changed the PCI bus driver to manage power states for
all devices (including type 1/2 bridge devices) during suspend and resume.

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Fix some incorrect #if conditions around older workarounds for bus
numbering goofs.

MFC after: 1 week

MFH: r278968-r280640

Sponsored by: The FreeBSD Foundation

Merge from head

Merge ^/head r279313 through r279595.

Merge r278538 through r279514.

Add some pcib methods to get ARI-related information

Differential Revision: https://reviews.freebsd.org/D72
Reviewed by: jhb
MFC after: 1 month
Sponsored by: Sandvine Inc.

Merge from HEAD

Merge ^/head r277327 through r277718.

Pass a valid Dx state variable to PCIB_POWER_FOR_SLEEP() in pcib_resume()
instead of NULL.

Submitted by: dchagin
MFC after: 2 weeks

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation