Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

pci: Disable Electromechanical Interlock.

Add sysctl/tunable to control Electromechanical Interlock support.
Disable it by default since Linux does not do it either and it seems
the number of system

pci: Disable Electromechanical Interlock.

Add sysctl/tunable to control Electromechanical Interlock support.
Disable it by default since Linux does not do it either and it seems
the number of systems having it broken is higher than having working.

This fixes NVMe backplane operation on ASUS RS500A-E11-RS12U server
with AMD EPYC 7402 CPU, where attempts to control reported interlock
for some reason end up in PCIe link loss, while interlock status does
not change (it is not really there).

MFC after: 2 weeks

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pci: Add an ioctl to perform I/O to BARs

This is useful for bhyve, which otherwise has to use /dev/io to handle
accesses to I/O port BARs when PCI passthrough is in use.

Reviewed by: imp, kib
Discu

pci: Add an ioctl to perform I/O to BARs

This is useful for bhyve, which otherwise has to use /dev/io to handle
accesses to I/O port BARs when PCI passthrough is in use.

Reviewed by: imp, kib
Discussed with: jhb
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31307

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/dev/pci: clarify meaning of writeable file descriptor

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D31317

MFHead @r350386

Sponsored by: The FreeBSD Foundation

pci(4): Use plural configuration registers

Change to use registers instead of register, as it is customary to use
plural when talking about PCI registers.

This was missed in r349150.

MFC after: 3

pci(4): Use plural configuration registers

Change to use registers instead of register, as it is customary to use
plural when talking about PCI registers.

This was missed in r349150.

MFC after: 3 days

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MFHead @349234

Sponsored by: The FreeBSD Foundation

pci.4: Use plural configuration registers

It is customary to use plural when talking about PCI configure registers.

Reported by: scottl
MFC after: 2 weeks
X-MFC-with: r349133

pci.4: wordsmith and add missing words

Add missing words after PCI in the description of the PCIOCWRITE and
PCIOCATTACHED ioctls.
Use singular in PCIOCREAD, we only read one register at the time.

R

pci.4: wordsmith and add missing words

Add missing words after PCI in the description of the PCIOCWRITE and
PCIOCATTACHED ioctls.
Use singular in PCIOCREAD, we only read one register at the time.

Reviewed by: bcr, bjk, rgrimes, cem
MFC after: 2 weeks
X-MFC-with: r349133
Differential Revision: https://reviews.freebsd.org/D20671

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pci(4): Document PCIOCATTACHED

Document the PCIOCATTACHED ioctl(2) in the pci(4) manual.
PCIOCATTACHED is used to query if a driver has attached to a PCI.

Reviewed by: bcr, imp
MFC after: 2 weeks
D

pci(4): Document PCIOCATTACHED

Document the PCIOCATTACHED ioctl(2) in the pci(4) manual.
PCIOCATTACHED is used to query if a driver has attached to a PCI.

Reviewed by: bcr, imp
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20652

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MFhead@r344527

Merge ^/head r344178 through r344512.

Fix a slew of mdoc errors and warnings.

MFC after: 1 week

MFH @ r337607, in preparation for boarding

Merge ^/head r336870 through r337285, and resolve conflicts.

Add ioctl to conveniently mmap a PCI device BAR into userspace.

Add the ioctl PCIOCBARMMAP on /dev/pci to conveniently create
userspace mapping of a PCI device BAR. This is enormously superior to
r

Add ioctl to conveniently mmap a PCI device BAR into userspace.

Add the ioctl PCIOCBARMMAP on /dev/pci to conveniently create
userspace mapping of a PCI device BAR. This is enormously superior to
read the BAR value with PCIOCREAD and then try to mmap /dev/mem, and
should allow to automatically activate the mapped BARs when needed in
future.

Current implementation creates new sg pager for each user mmap
request. If the pointer (and reference) to a managed device pager is
stored in pci_map, we would be able to revoke all mappings on the BAR
deactivation or relocation. This is related to the unimplemented BAR
activation on mmap, and is postponed for the future.

Discussed with: imp, jhb
Sponsored by: The FreeBSD Foundation, Mellanox Technologies
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D15583

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Merge ^/head r326936 through r327149.

Provide a nda man page. Add cross referneces. Bump dates.
Also, CAM is a storage subsystem, not a SCSI/ATA one these days.

Sponsored by: Netflix

Document new pci device hints wiring.

Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D13546

Merge ^/head r305623 through r305686.

Document PCI_HP and PCI_IOV kernel options and various tunables in pci(4).

Describe PCI-related kernel options for HotPlug and SR-IOV support in the
pci(4) manual page. While here, add a section de

Document PCI_HP and PCI_IOV kernel options and various tunables in pci(4).

Describe PCI-related kernel options for HotPlug and SR-IOV support in the
pci(4) manual page. While here, add a section describing the various
tunables supported by the PCI bus driver as well.

Reviewed by: wblock
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D7754

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Merge ^/head r303250 through r304235.

Reliably return PCI_GETCONF_LAST_DEVICE from PCIOCGETCONF.

Previously the loop in PCIIOCGETCONF would terminate as soon as it
found enough matches. Now it will continue iterating through the
PCI de

Reliably return PCI_GETCONF_LAST_DEVICE from PCIOCGETCONF.

Previously the loop in PCIIOCGETCONF would terminate as soon as it
found enough matches. Now it will continue iterating through the
PCI device list and only terminate if it finds another matching device
for which it has no room to store a conf structure. This means that
PCI_GETCONF_LAST_DEVICE is reliably returned when the number of
matching devices is equal to the number of slots in the matches
buffer. For example, if a program requests the conf structure for a
single PCI function with a specified domain/bus/slot/function it will
now get PCI_GETCONF_LAST_DEVICE instead of PCI_GETCONF_MORE_DEVS.

While here, simplify the loop conditional a bit more by explicitly
breaking out of the loop if copyout() fails and removing a redundant
i < pci_numdevs check.

Reviewed by: vangyzen, imp
MFC after: 1 month
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7445

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IFC @r269962

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

Merge head from 7/28