kernel - Disable MSIX mode in pci_teardown_msix()

* Disable MSIX mode when pci_teardown_msix() is called. This fixes
issues on some BIOSes which do not fully clear the PCI hardware
configuratio

kernel - Disable MSIX mode in pci_teardown_msix()

* Disable MSIX mode when pci_teardown_msix() is called. This fixes
issues on some BIOSes which do not fully clear the PCI hardware
configuration when warm-booting.

In particular, the NVME controller appears to have this issue with
some laptops (HP Intel gen 9 and gen 10 laptops) whereby the MSI
interrupt winds up being stuck on reboot.

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kernel/pci: Remove embedded newlines in sysctl descriptions.

pciconf - Enhance output

* Add more registers defs from FreeBSD to pcireg.h

* Bring expanded pciconf code in form FreeBSD. This code
displays more configuration data for bridges and control
re

pciconf - Enhance output

* Add more registers defs from FreeBSD to pcireg.h

* Bring expanded pciconf code in form FreeBSD. This code
displays more configuration data for bridges and control
registers, and fixes a broken bus error reporting conditional.

* Also normalize SLT -> SLOT naming in pcireg.h

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Fix a few typos across the tree.

virtio: Fix and activate PCI MSI-X support.

* Change pci_msi_blacklisted() test to always assume working MSI and MSI-X
interrupts on virtual-machines. We should assume that a hypervisor
without

virtio: Fix and activate PCI MSI-X support.

* Change pci_msi_blacklisted() test to always assume working MSI and MSI-X
interrupts on virtual-machines. We should assume that a hypervisor
without MSI or MSI-X support shouldn't even indicate supported MSI(-X)
via the PCI config space.

* Move vtblk_alloc_disk() to the end of virtio_blk's attach method.
This avoids a race between irq enabling in virtio, and the disk probing.

* Fix allocation and teardown of MSI-X interrupts.

* Get rid of rather confusing VIRTIO_PCI_FLAG_NO_MSI and
VIRTIO_PCI_FLAG_NO_MSIX flags. The VIRTIO_PCI_FLAG_NO_MSI is unneeded
when using pci_alloc_1intr() for MSI allocation, and
instead of VIRTIO_PCI_FLAG_NO_MSIX we can just check sc->vtpci_msix_res.

* For now, MSI-X vectors are simply assigned to subsequent cores (plus
adding the device_get_unit() value to shuffle things a bit), i.e.:
(device_get_unit(dev) + cnt) % ncpus

* For the if_vtnet network driver this means that the rx and tx queues run
on different cores, but both queues still use the same serializer for
now.

* One major advantages in using MSI-X interrupts instead of the legacy
IRQ is, that this avoids interrupt sharing in many virtual-machine
configurations.

* Tested on qemu with TCG (unaccelerated emulation) and 1 core, and with
KVM acceleration and 2 cores, with both virtio network and disk devices.

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alc: Add Killer E2500 support.

pci: Add a quirk for chips w/ broken MSI support.

These chips (mainly chips supported by alc(4)) will not send MSI,
if INTxDIS is set.

Obtained-from: FreeBSD

kernel/pci: Remove old compatibility shims.

The last drivers using this were removed in d69d461d812.

kernel/bus: Change function definitions to static (to match declaration).

usb4bsd/pci: Correct typo in bootverbose message

kernel - Add PCI functionality

* Add pci_iterate_class() for the drm code.

i386 removal, part 6/x: Remove i386 parts of the ISA and PCI buses.

Remove the old USB stack and related userland, etc.

As detailed in UPDATING, users with a custom configuration file which
was derived from a *GENERIC file before we made usb4bsd default (this
happen

Remove the old USB stack and related userland, etc.

As detailed in UPDATING, users with a custom configuration file which
was derived from a *GENERIC file before we made usb4bsd default (this
happened in 3.6) might need to remove or comment out a couple of
devices which are now unknown.

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kernel/pci: Fix wrong checks for U4B presence.

I messed this up when switching us to the new USB stack.

Thanks to Markus Pfeiffer for tracking down my mistake.

Reported-by: peeter
Dragonfly-bug:

kernel/pci: Fix wrong checks for U4B presence.

I messed this up when switching us to the new USB stack.

Thanks to Markus Pfeiffer for tracking down my mistake.

Reported-by: peeter
Dragonfly-bug: <http://bugs.dragonflybsd.org/issues/2686>

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Make usb4bsd the default USB stack.

To get back to the old stack, put "WANT_OLDUSB=yes" in /etc/make.conf and
replace "device usb" with "device oldusb" in the kernel configuration.

Requested-by: di

Make usb4bsd the default USB stack.

To get back to the old stack, put "WANT_OLDUSB=yes" in /etc/make.conf and
replace "device usb" with "device oldusb" in the kernel configuration.

Requested-by: dillon, profmakx, marino etc.

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kernel: Import pci_save_state and pci_restore_state from FreeBSD

usb4bsd: Next attempt at fixing BIOS handoff for XHCI

If the BIOS does not give up the XHCI, then force the takeover.
Linux does it that way. It might not be clean or correct, but
it works for the t

usb4bsd: Next attempt at fixing BIOS handoff for XHCI

If the BIOS does not give up the XHCI, then force the takeover.
Linux does it that way. It might not be clean or correct, but
it works for the time being.
Conflicts:

sys/bus/pci/pci.c
sys/bus/u4b/controller/xhci_pci.c
sys/bus/u4b/controller/xhcireg.h

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usb4bsd, pci: pull in bios takeover code from FreeBSD

Submitted-By: swildner

kernel/pci: Fix extern in pcivar.h and clean up a bit.

kernel: import pci_find_class() from FreeBSD

kernel: Use DEVMETHOD_END in the drivers.

kernel/bus: Remove some unused variables and put others in #ifdef...

pci: Guard against wrong user supplied IRQ assignment

pci: Disable memory address decoding before writing 0xffffffff to BAR

This makes PCIe memory mapped configuration works.

Submitted-by: Romick Romick
Tested-by: y0netan1@

pci: Update several bits for PCI Express 2.0