Merge tag 'v6.6.79' into for/openbmc/dev-6.6

This is the 6.6.79 stable release

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Merge tag 'v6.6.79' into for/openbmc/dev-6.6

This is the 6.6.79 stable release

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# gpg: using RSA key 647F28654894E3BD457199BE38DBBDC86092693E
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# gpg: gregkh@kernel.org: Verified 8 signatures in the past 4 weeks. Encrypted
# 0 messages.
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# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 647F 2865 4894 E3BD 4571 99BE 38DB BDC8 6092 693E

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PCI: switchtec: Add Microchip PCI100X device IDs

[ Upstream commit a3282f84b2151d254dc4abf24d1255c6382be774 ]

Add Microchip parts to the Device ID table so the driver supports PCI100x
devices.

Add

PCI: switchtec: Add Microchip PCI100X device IDs

[ Upstream commit a3282f84b2151d254dc4abf24d1255c6382be774 ]

Add Microchip parts to the Device ID table so the driver supports PCI100x
devices.

Add a new macro to quirk the Microchip Switchtec PCI100x parts to allow DMA
access via NTB to work when the IOMMU is turned on.

PCI100x family has 6 variants; each variant is designed for different
application usages, different port counts and lane counts:

PCI1001 has 1 x4 upstream port and 3 x4 downstream ports
PCI1002 has 1 x4 upstream port and 4 x2 downstream ports
PCI1003 has 2 x4 upstream ports, 2 x2 upstream ports, and 2 x2
downstream ports
PCI1004 has 4 x4 upstream ports
PCI1005 has 1 x4 upstream port and 6 x2 downstream ports
PCI1006 has 6 x2 upstream ports and 2 x2 downstream ports

[Historical note: these parts use PCI_VENDOR_ID_EFAR (0x1055), from EFAR
Microsystems, which was acquired in 1996 by Standard Microsystems Corp,
which was acquired by Microchip Technology in 2012. The PCI-SIG confirms
that Vendor ID 0x1055 is assigned to Microchip even though it's not
visible via https://pcisig.com/membership/member-companies]

Link: https://lore.kernel.org/r/20250120095524.243103-1-Saladi.Rakeshbabu@microchip.com
Signed-off-by: Rakesh Babu Saladi <Saladi.Rakeshbabu@microchip.com>
[bhelgaas: Vendor ID history]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-By: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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PCI/DPC: Quirk PIO log size for Intel Raptor Lake-P

[ Upstream commit b198499c7d2508a76243b98e7cca992f6fd2b7f7 ]

Apparently the Raptor Lake-P reference firmware configures the PIO log size
correctl

PCI/DPC: Quirk PIO log size for Intel Raptor Lake-P

[ Upstream commit b198499c7d2508a76243b98e7cca992f6fd2b7f7 ]

Apparently the Raptor Lake-P reference firmware configures the PIO log size
correctly, but some vendor BIOSes, including at least ASUSTeK COMPUTER INC.
Zenbook UX3402VA_UX3402VA, do not.

Apply the quirk for Raptor Lake-P. This prevents kernel complaints like:

DPC: RP PIO log size 0 is invalid

and also enables the DPC driver to dump the RP PIO Log registers when DPC
is triggered.

Note that the bug report also mentions 8086:a76e, which has been already
added by 627c6db20703 ("PCI/DPC: Quirk PIO log size for Intel Raptor Lake
Root Ports").

Link: https://lore.kernel.org/r/20250102164315.7562-1-tiwai@suse.de
Link: https://bugzilla.suse.com/show_bug.cgi?id=1234623
Signed-off-by: Takashi Iwai <tiwai@suse.de>
[bhelgaas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Merge tag 'v6.6.68' into for/openbmc/dev-6.6

This is the 6.6.68 stable release

PCI: Add ACS quirk for Broadcom BCM5760X NIC

[ Upstream commit 524e057b2d66b61f9b63b6db30467ab7b0bb4796 ]

The Broadcom BCM5760X NIC may be a multi-function device.

While it does not advertise an A

PCI: Add ACS quirk for Broadcom BCM5760X NIC

[ Upstream commit 524e057b2d66b61f9b63b6db30467ab7b0bb4796 ]

The Broadcom BCM5760X NIC may be a multi-function device.

While it does not advertise an ACS capability, peer-to-peer transactions
are not possible between the individual functions. So it is ok to treat
them as fully isolated.

Add an ACS quirk for this device so the functions can be in independent
IOMMU groups and attached individually to userspace applications using
VFIO.

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/20240510204228.73435-1-ajit.khaparde@broadcom.com
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Merge tag 'v6.6.66' into for/openbmc/dev-6.6

This is the 6.6.66 stable release

PCI: Add ACS quirk for Wangxun FF5xxx NICs

[ Upstream commit aa46a3736afcb7b0793766d22479b8b99fc1b322 ]

Wangxun FF5xxx NICs are similar to SFxxx, RP1000 and RP2000 NICs. They may
be multi-function

PCI: Add ACS quirk for Wangxun FF5xxx NICs

[ Upstream commit aa46a3736afcb7b0793766d22479b8b99fc1b322 ]

Wangxun FF5xxx NICs are similar to SFxxx, RP1000 and RP2000 NICs. They may
be multi-function devices, but they do not advertise an ACS capability.

But the hardware does isolate FF5xxx functions as though it had an ACS
capability and PCI_ACS_RR and PCI_ACS_CR were set in the ACS Control
register, i.e., all peer-to-peer traffic is directed upstream instead of
being routed internally.

Add ACS quirk for FF5xxx NICs in pci_quirk_wangxun_nic_acs() so the
functions can be in independent IOMMU groups.

Link: https://lore.kernel.org/r/E16053DB2B80E9A5+20241115024604.30493-1-mengyuanlou@net-swift.com
Signed-off-by: Mengyuan Lou <mengyuanlou@net-swift.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Merge tag 'v6.6.57' into for/openbmc/dev-6.6

This is the 6.6.57 stable release

PCI: Mark Creative Labs EMU20k2 INTx masking as broken

[ Upstream commit 2910306655a7072640021563ec9501bfa67f0cb1 ]

Per user reports, the Creative Labs EMU20k2 (Sound Blaster X-Fi
Titanium Series)

PCI: Mark Creative Labs EMU20k2 INTx masking as broken

[ Upstream commit 2910306655a7072640021563ec9501bfa67f0cb1 ]

Per user reports, the Creative Labs EMU20k2 (Sound Blaster X-Fi
Titanium Series) generates spurious interrupts when used with
vfio-pci unless DisINTx masking support is disabled.

Thus, quirk the device to mark INTx masking as broken.

Closes: https://lore.kernel.org/all/VI1PR10MB8207C507DB5420AB4C7281E0DB9A2@VI1PR10MB8207.EURPRD10.PROD.OUTLOOK.COM
Link: https://lore.kernel.org/linux-pci/20240912215331.839220-1-alex.williamson@redhat.com
Reported-by: zdravko delineshev <delineshev@outlook.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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PCI: Add ACS quirk for Qualcomm SA8775P

[ Upstream commit 026f84d3fa62d215b11cbeb5a5d97df941e93b5c ]

The Qualcomm SA8775P root ports don't advertise an ACS capability, but they
do provide ACS-like

PCI: Add ACS quirk for Qualcomm SA8775P

[ Upstream commit 026f84d3fa62d215b11cbeb5a5d97df941e93b5c ]

The Qualcomm SA8775P root ports don't advertise an ACS capability, but they
do provide ACS-like features to disable peer transactions and validate bus
numbers in requests.

Thus, add an ACS quirk for the SA8775P.

Link: https://lore.kernel.org/linux-pci/20240906052228.1829485-1-quic_skananth@quicinc.com
Signed-off-by: Subramanian Ananthanarayanan <quic_skananth@quicinc.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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PCI: Add function 0 DMA alias quirk for Glenfly Arise chip

[ Upstream commit 9246b487ab3c3b5993aae7552b7a4c541cc14a49 ]

Add DMA support for audio function of Glenfly Arise chip, which uses
Requeste

PCI: Add function 0 DMA alias quirk for Glenfly Arise chip

[ Upstream commit 9246b487ab3c3b5993aae7552b7a4c541cc14a49 ]

Add DMA support for audio function of Glenfly Arise chip, which uses
Requester ID of function 0.

Link: https://lore.kernel.org/r/CA2BBD087345B6D1+20240823095708.3237375-1-wangyuli@uniontech.com
Signed-off-by: SiyuLi <siyuli@glenfly.com>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
[bhelgaas: lower-case hex to match local code, drop unused Device IDs]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Merge tag 'v6.6.54' into for/openbmc/dev-6.6

This is the 6.6.54 stable release

PCI: Use an error code with PCIe failed link retraining

commit 59100eb248c0b15585affa546c7f6834b30eb5a4 upstream.

Given how the call place in pcie_wait_for_link_delay() got structured now,
and that

PCI: Use an error code with PCIe failed link retraining

commit 59100eb248c0b15585affa546c7f6834b30eb5a4 upstream.

Given how the call place in pcie_wait_for_link_delay() got structured now,
and that pcie_retrain_link() returns a potentially useful error code,
convert pcie_failed_link_retrain() to return an error code rather than a
boolean status, fixing handling at the call site mentioned. Update the
other call site accordingly.

Fixes: 1abb47390350 ("Merge branch 'pci/enumeration'")
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2408091156530.61955@angie.orcam.me.uk
Reported-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/aa2d1c4e-9961-d54a-00c7-ddf8e858a9b0@linux.intel.com/
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Cc: <stable@vger.kernel.org> # v6.5+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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PCI: Correct error reporting with PCIe failed link retraining

commit 712e49c967064a3a7a5738c6f65ac540a3f6a1df upstream.

Only return successful completion status from pcie_failed_link_retrain() if
r

PCI: Correct error reporting with PCIe failed link retraining

commit 712e49c967064a3a7a5738c6f65ac540a3f6a1df upstream.

Only return successful completion status from pcie_failed_link_retrain() if
retraining has actually been done, preventing excessive delays from being
triggered at call sites in a hope that communication will finally be
established with the downstream device where in fact nothing has been done
about the link in question that would justify such a hope.

Fixes: a89c82249c37 ("PCI: Work around PCIe link training failures")
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2408091133260.61955@angie.orcam.me.uk
Reported-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/aa2d1c4e-9961-d54a-00c7-ddf8e858a9b0@linux.intel.com/
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Cc: <stable@vger.kernel.org> # v6.5+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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PCI: Revert to the original speed after PCIe failed link retraining

commit f68dea13405c94381d08f42dbf0416261622bdad upstream.

When `pcie_failed_link_retrain' has failed to retrain the link by hand

PCI: Revert to the original speed after PCIe failed link retraining

commit f68dea13405c94381d08f42dbf0416261622bdad upstream.

When `pcie_failed_link_retrain' has failed to retrain the link by hand
it leaves the link speed restricted to 2.5GT/s, which will then affect
any device that has been plugged in later on, which may not suffer from
the problem that caused the speed restriction to have been attempted.
Consequently such a downstream device will suffer from an unnecessary
communication throughput limitation and therefore performance loss.

Remove the speed restriction then and revert the Link Control 2 register
to its original state if link retraining with the speed restriction in
place has failed. Retrain the link again afterwards so as to remove any
residual state, waiting on LT rather than DLLLA to avoid an excessive
delay and ignoring the result as this training is supposed to fail
anyway.

Fixes: a89c82249c37 ("PCI: Work around PCIe link training failures")
Link: https://lore.kernel.org/linux-pci/alpine.DEB.2.21.2408251412590.30766@angie.orcam.me.uk
Reported-by: Matthew W Carlis <mattc@purestorage.com>
Link: https://lore.kernel.org/r/20240806000659.30859-1-mattc@purestorage.com/
Link: https://lore.kernel.org/r/20240722193407.23255-1-mattc@purestorage.com/
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Cc: <stable@vger.kernel.org> # v6.5+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Merge tag 'v6.6.29' into dev-6.6

This is the 6.6.29 stable release

PCI: Simplify pcie_capability_clear_and_set_word() to ..._clear_word()

[ Upstream commit 0fce6e5c87faec2c8bf28d2abc8cb595f4e244b6 ]

When using pcie_capability_clear_and_set_word() but not actually

PCI: Simplify pcie_capability_clear_and_set_word() to ..._clear_word()

[ Upstream commit 0fce6e5c87faec2c8bf28d2abc8cb595f4e244b6 ]

When using pcie_capability_clear_and_set_word() but not actually *setting*
anything, use pcie_capability_clear_word() instead.

Link: https://lore.kernel.org/r/20231026121924.2164-1-ilpo.jarvinen@linux.intel.com
Link: https://lore.kernel.org/r/20231026121924.2164-2-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
[bhelgaas: squash]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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PCI/DPC: Use FIELD_GET()

[ Upstream commit 9a9eec4765737b9b2a8d6ae03de6480a5f12dd5c ]

Use FIELD_GET() to remove dependencies on the field position, i.e., the
shift value. No functional change inten

PCI/DPC: Use FIELD_GET()

[ Upstream commit 9a9eec4765737b9b2a8d6ae03de6480a5f12dd5c ]

Use FIELD_GET() to remove dependencies on the field position, i.e., the
shift value. No functional change intended.

Link: https://lore.kernel.org/r/20231018113254.17616-5-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Merge tag 'v6.6.24' into dev-6.6

This is the 6.6.24 stable release

PCI/DPC: Quirk PIO log size for Intel Raptor Lake Root Ports

[ Upstream commit 627c6db20703b5d18d928464f411d0d4ec327508 ]

Commit 5459c0b70467 ("PCI/DPC: Quirk PIO log size for certain Intel Root
Po

PCI/DPC: Quirk PIO log size for Intel Raptor Lake Root Ports

[ Upstream commit 627c6db20703b5d18d928464f411d0d4ec327508 ]

Commit 5459c0b70467 ("PCI/DPC: Quirk PIO log size for certain Intel Root
Ports") and commit 3b8803494a06 ("PCI/DPC: Quirk PIO log size for Intel Ice
Lake Root Ports") add quirks for Ice, Tiger and Alder Lake Root Ports.
System firmware for Raptor Lake still has the bug, so Linux logs the
warning below on several Raptor Lake systems like Dell Precision 3581 with
Intel Raptor Lake processor (0W18NX) system firmware/BIOS version 1.10.1.

pci 0000:00:07.0: [8086:a76e] type 01 class 0x060400
pci 0000:00:07.0: DPC: RP PIO log size 0 is invalid
pci 0000:00:07.1: [8086:a73f] type 01 class 0x060400
pci 0000:00:07.1: DPC: RP PIO log size 0 is invalid

Apply the quirk for Raptor Lake Root Ports as well.

This also enables the DPC driver to dump the RP PIO Log registers when DPC
is triggered.

Link: https://lore.kernel.org/r/20240305113057.56468-1-pmenzel@molgen.mpg.de
Reported-by: Niels van Aert <nvaert1986@hotmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218560
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: <stable@vger.kernel.org>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Niels van Aert <nvaert1986@hotmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Merge tag 'v6.6.23' into dev-6.6

Linux 6.6.23

PCI: Mark 3ware-9650SE Root Port Extended Tags as broken

[ Upstream commit baf67aefbe7d7deafa59ca49612d163f8889934c ]

Per PCIe r6.1, sec 2.2.6.2 and 7.5.3.4, a Requester may not use 8-bit Tags
unle

PCI: Mark 3ware-9650SE Root Port Extended Tags as broken

[ Upstream commit baf67aefbe7d7deafa59ca49612d163f8889934c ]

Per PCIe r6.1, sec 2.2.6.2 and 7.5.3.4, a Requester may not use 8-bit Tags
unless its Extended Tag Field Enable is set, but all Receivers/Completers
must handle 8-bit Tags correctly regardless of their Extended Tag Field
Enable.

Some devices do not handle 8-bit Tags as Completers, so add a quirk for
them. If we find such a device, we disable Extended Tags for the entire
hierarchy to make peer-to-peer DMA possible.

The 3ware 9650SE seems to have issues with handling 8-bit tags. Mark it as
broken.

This fixes PCI Parity Errors like :

3w-9xxx: scsi0: ERROR: (0x06:0x000C): PCI Parity Error: clearing.
3w-9xxx: scsi0: ERROR: (0x06:0x000D): PCI Abort: clearing.
3w-9xxx: scsi0: ERROR: (0x06:0x000E): Controller Queue Error: clearing.
3w-9xxx: scsi0: ERROR: (0x06:0x0010): Microcontroller Error: clearing.

Link: https://lore.kernel.org/r/20240219132811.8351-1-joerg@wedekind.de
Fixes: 60db3a4d8cc9 ("PCI: Enable PCIe Extended Tags if supported")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=202425
Signed-off-by: Jörg Wedekind <joerg@wedekind.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Merge tag 'v6.6.16' into dev-6.6

This is the 6.6.16 stable release

Merge tag 'v6.6.13' into dev-6.6

This is the 6.6.13 stable release

PCI: Only override AMD USB controller if required

[ Upstream commit e585a37e5061f6d5060517aed1ca4ccb2e56a34c ]

By running a Van Gogh device (Steam Deck), the following message
was noticed in the ke

PCI: Only override AMD USB controller if required

[ Upstream commit e585a37e5061f6d5060517aed1ca4ccb2e56a34c ]

By running a Van Gogh device (Steam Deck), the following message
was noticed in the kernel log:

pci 0000:04:00.3: PCI class overridden (0x0c03fe -> 0x0c03fe) so dwc3 driver can claim this instead of xhci

Effectively this means the quirk executed but changed nothing, since the
class of this device was already the proper one (likely adjusted by newer
firmware versions).

Check and perform the override only if necessary.

Link: https://lore.kernel.org/r/20231120160531.361552-1-gpiccoli@igalia.com
Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: Vicki Pfau <vi@endrift.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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