PCI: microchip: Enable building driver as a module

Enable building driver as a module. The expected use case is the
driver is built as a module, is installed when needed, and cannot be
removed once

PCI: microchip: Enable building driver as a module

Enable building driver as a module. The expected use case is the
driver is built as a module, is installed when needed, and cannot be
removed once installed since it is not possible to clean-up
the irq_chip data structures on removal, as described in:

https://lore.kernel.org/linux-pci/87y1wgbah8.wl-maz@kernel.org/

The driver has .suppress_bind_attrs set to true for the same
reasons (ie prevent unbinding, that would leave the kernel
with stale IRQ configuration that cannot be cleaned up).

Link: https://lore.kernel.org/linux-pci/87y1wgbah8.wl-maz@kernel.org/
Link: https://lore.kernel.org/r/20230728131401.1615724-3-daire.mcnamara@microchip.com
Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>

show more ...

Revert "PCI: mvebu: Mark driver as BROKEN"

b3574f579ece ("PCI: mvebu: Mark driver as BROKEN") made it impossible to
enable the pci-mvebu driver. The driver does have known problems, but as
Russell

Revert "PCI: mvebu: Mark driver as BROKEN"

b3574f579ece ("PCI: mvebu: Mark driver as BROKEN") made it impossible to
enable the pci-mvebu driver. The driver does have known problems, but as
Russell and Uwe reported, it does work in some configurations, so removing
it broke some working setups.

Revert b3574f579ece so pci-mvebu is available.

Reported-by: Russell King (Oracle) <linux@armlinux.org.uk>
Link: https://lore.kernel.org/r/ZMzicVQEyHyZzBOc@shell.armlinux.org.uk
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230804134622.pmbymxtzxj2yfhri@pengutronix.de
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI: xilinx: Drop obsolete dependency on COMPILE_TEST

Since commit 0166dc11be91 ("of: make CONFIG_OF user selectable"), it is
possible to test-build any driver which depends on OF on any architectur

PCI: xilinx: Drop obsolete dependency on COMPILE_TEST

Since commit 0166dc11be91 ("of: make CONFIG_OF user selectable"), it is
possible to test-build any driver which depends on OF on any architecture
by explicitly selecting OF. Therefore depending on COMPILE_TEST as an
alternative is no longer needed.

Link: https://lore.kernel.org/r/20230407190843.529caf19@endymion.delvare
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: "Krzysztof Wilczyński" <kw@linux.com>

show more ...

PCI: Sort controller Kconfig entries by vendor

Sort Kconfig entries by vendor so they appear in alphabetical order in
menuconfig.

Link: https://lore.kernel.org/r/20230418174336.145585-6-helgaas@ker

PCI: Sort controller Kconfig entries by vendor

Sort Kconfig entries by vendor so they appear in alphabetical order in
menuconfig.

Link: https://lore.kernel.org/r/20230418174336.145585-6-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI: Use consistent controller Kconfig menu entry language

Use "PCIe controller" consistently instead of "host bridge", "bus driver",
etc. Annotate with "(host mode)" or "(endpoint mode)" as needed

PCI: Use consistent controller Kconfig menu entry language

Use "PCIe controller" consistently instead of "host bridge", "bus driver",
etc. Annotate with "(host mode)" or "(endpoint mode)" as needed.

Link: https://lore.kernel.org/r/20230418174336.145585-5-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI: xilinx-nwl: Add 'Xilinx' to Kconfig prompt

Add the "Xilinx" vendor name to the CONFIG_PCIE_XILINX_NWL Kconfig prompt
so it matches other drivers. Rename from "PCIe Core" to "PCIe controller".

PCI: xilinx-nwl: Add 'Xilinx' to Kconfig prompt

Add the "Xilinx" vendor name to the CONFIG_PCIE_XILINX_NWL Kconfig prompt
so it matches other drivers. Rename from "PCIe Core" to "PCIe controller".

Link: https://lore.kernel.org/r/20230418174336.145585-4-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Michal Simek <michal.simek@amd.com>

show more ...

PCI: hv: Add 'Microsoft' to Kconfig prompt

Add the "Microsoft" vendor name to the CONFIG_PCI_HYPERV_INTERFACE Kconfig
prompt so it matches other PCIe drivers and other Hyper-V prompts.

Link: https:

PCI: hv: Add 'Microsoft' to Kconfig prompt

Add the "Microsoft" vendor name to the CONFIG_PCI_HYPERV_INTERFACE Kconfig
prompt so it matches other PCIe drivers and other Hyper-V prompts.

Link: https://lore.kernel.org/r/20230418174336.145585-3-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Wei Liu <wei.liu@kernel.org>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Dexuan Cui <decui@microsoft.com>

show more ...

PCI: hv: Drop duplicate PCI_MSI dependency

Commit a474d3fbe287 ("PCI/MSI: Get rid of PCI_MSI_IRQ_DOMAIN") removed
PCI_MSI_IRQ_DOMAIN and made all previous references to it refer to PCI_MSI
instead.

PCI: hv: Drop duplicate PCI_MSI dependency

Commit a474d3fbe287 ("PCI/MSI: Get rid of PCI_MSI_IRQ_DOMAIN") removed
PCI_MSI_IRQ_DOMAIN and made all previous references to it refer to PCI_MSI
instead.

PCI_HYPERV_INTERFACE already depended on PCI_MSI && PCI_MSI_IRQ_DOMAIN, so
we ended up with a redundant dependency on PCI_MSI && PCI_MSI. Drop the
duplicate.

No functional change. Just a stylistic clean-up.

Link: https://lore.kernel.org/r/20221215101310.9135-1-lukas.bulwahn@gmail.com
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI: mvebu: Mark driver as BROKEN

People are reporting that pci-mvebu.c driver does not work with recent
mainline kernel. There are more bugs which prevents its for daily usage.
So lets mark it as b

PCI: mvebu: Mark driver as BROKEN

People are reporting that pci-mvebu.c driver does not work with recent
mainline kernel. There are more bugs which prevents its for daily usage.
So lets mark it as broken for now, until somebody would be able to fix it
in mainline kernel.

Link: https://lore.kernel.org/r/20230114164125.1298-1-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>

show more ...

drivers/pci/controller: Remove "select SRCU"

Now that the SRCU Kconfig option is unconditionally selected, there is
no longer any point in selecting it. Therefore, remove the "select SRCU"
Kconfig

drivers/pci/controller: Remove "select SRCU"

Now that the SRCU Kconfig option is unconditionally selected, there is
no longer any point in selecting it. Therefore, remove the "select SRCU"
Kconfig statements.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: "Krzysztof Wilczyński" <kw@linux.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: <linux-pci@vger.kernel.org>
Acked-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: John Ogness <john.ogness@linutronix.de>

show more ...

PCI/MSI: Get rid of PCI_MSI_IRQ_DOMAIN

What a zoo:

PCI_MSI
select GENERIC_MSI_IRQ

PCI_MSI_IRQ_DOMAIN
def_bool y
depends on PCI_MSI
select GENERIC_MSI_IRQ_DOMAIN

Ergo PCI_MSI en

PCI/MSI: Get rid of PCI_MSI_IRQ_DOMAIN

What a zoo:

PCI_MSI
select GENERIC_MSI_IRQ

PCI_MSI_IRQ_DOMAIN
def_bool y
depends on PCI_MSI
select GENERIC_MSI_IRQ_DOMAIN

Ergo PCI_MSI enables PCI_MSI_IRQ_DOMAIN which in turn selects
GENERIC_MSI_IRQ_DOMAIN. So all the dependencies on PCI_MSI_IRQ_DOMAIN are
just an indirection to PCI_MSI.

Match the reality and just admit that PCI_MSI requires
GENERIC_MSI_IRQ_DOMAIN.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20221111122014.467556921@linutronix.de

show more ...

arm64: bcmbca: Make BCM4908 drivers depend on ARCH_BCMBCA

With Broadcom Broadband arch ARCH_BCMBCA supported in the kernel, this
patch series migrate the ARCH_BCM4908 symbol to ARCH_BCMBCA. Hence
re

arm64: bcmbca: Make BCM4908 drivers depend on ARCH_BCMBCA

With Broadcom Broadband arch ARCH_BCMBCA supported in the kernel, this
patch series migrate the ARCH_BCM4908 symbol to ARCH_BCMBCA. Hence
replace ARCH_BCM4908 with ARCH_BCMBCA in subsystem Kconfig files.

Signed-off-by: William Zhang <william.zhang@broadcom.com>
Acked-by: Guenter Roeck <linux@roeck-us.net> (for watchdog)
Acked-by: Bjorn Helgaas <bhelgaas@google.com> (for drivers/pci)
Acked-by: Wolfram Sang <wsa@kernel.org> (for i2c)
Acked-by: Philipp Zabel <p.zabel@pengutronix.de> (for reset)
Link: https://lore.kernel.org/r/20220803175455.47638-7-william.zhang@broadcom.com
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

show more ...

PCI: loongson: Add ACPI init support

Loongson PCH (LS7A chipset) will be used by both MIPS-based and LoongArch-
based Loongson processors. MIPS-based Loongson uses FDT, while LoongArch-
based Loongs

PCI: loongson: Add ACPI init support

Loongson PCH (LS7A chipset) will be used by both MIPS-based and LoongArch-
based Loongson processors. MIPS-based Loongson uses FDT, while LoongArch-
based Loongson uses ACPI.

Add ACPI init support for the driver in pci-loongson.c because it is
currently FDT-only.

LoongArch is a new RISC ISA, mainline support will come soon, and
documentations are here (in translation):

https://github.com/loongson/LoongArch-Documentation

Link: https://lore.kernel.org/r/20220714124216.1489304-4-chenhuacai@loongson.cn
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI: mediatek: Allow building for ARCH_AIROHA

Allow selecting the pcie-mediatek driver if ARCH_AIROHA is set, because the
Airoha EN7523 SoC uses the same controller as MT7622.

The driver itself is

PCI: mediatek: Allow building for ARCH_AIROHA

Allow selecting the pcie-mediatek driver if ARCH_AIROHA is set, because the
Airoha EN7523 SoC uses the same controller as MT7622.

The driver itself is not modified. The PCIe controller DT node should use
mediatek,mt7622-pcie after airoha,en7523-pcie.

Link: https://lore.kernel.org/r/20220615125335.96089-2-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

show more ...

PCI: mvebu: Add help string for CONFIG_PCI_MVEBU option

There is no description for CONFIG_PCI_MVEBU option. Add it.

Link: https://lore.kernel.org/r/20220104153529.31647-6-pali@kernel.org
Signed-of

PCI: mvebu: Add help string for CONFIG_PCI_MVEBU option

There is no description for CONFIG_PCI_MVEBU option. Add it.

Link: https://lore.kernel.org/r/20220104153529.31647-6-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

show more ...

PCI: mt7621: Allow COMPILE_TEST for all arches

Since all MIPS-specific code has been removed from driver, allow it to be
enabled for COMPILE_TEST on all architectures.

Mark it as tristate and remov

PCI: mt7621: Allow COMPILE_TEST for all arches

Since all MIPS-specific code has been removed from driver, allow it to be
enabled for COMPILE_TEST on all architectures.

Mark it as tristate and remove MIPS the MIPS dependency.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI: hv: Add arm64 Hyper-V vPCI support

Add arm64 Hyper-V vPCI support by implementing the arch specific
interfaces. Introduce an IRQ domain and chip specific to Hyper-v vPCI that
is based on SPIs.

PCI: hv: Add arm64 Hyper-V vPCI support

Add arm64 Hyper-V vPCI support by implementing the arch specific
interfaces. Introduce an IRQ domain and chip specific to Hyper-v vPCI that
is based on SPIs. The IRQ domain parents itself to the arch GIC IRQ domain
for basic vector management.

[bhelgaas: squash in fix from Yang Li <yang.lee@linux.alibaba.com>:
https://lore.kernel.org/r/20220112003324.62755-1-yang.lee@linux.alibaba.com]
Link: https://lore.kernel.org/r/1641411156-31705-3-git-send-email-sunilmut@linux.microsoft.com
Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>

show more ...

PCI: brcmstb: Augment driver for MIPs SOCs

The current brcmstb driver works for Arm and Arm64. A few things are
modified here for us to support MIPs as well.

o There are four outbound range regi

PCI: brcmstb: Augment driver for MIPs SOCs

The current brcmstb driver works for Arm and Arm64. A few things are
modified here for us to support MIPs as well.

o There are four outbound range register groups and each directs a window
of up to 128MB. Even though there are four 128MB DT "ranges" in the
bmips PCIe DT node, these ranges are contiguous and are collapsed into
a single range by the OF range parser. Now the driver assumes a single
range -- for MIPs only -- and splits it back into 128MB sizes.

o For bcm7425, the config space accesses must be 32-bit reads or
writes. In addition, the 4k config space register array is missing
and not used.

o The registers for the upper 32-bits of the outbound window address do
not exist.

o Burst size must be set to 256 (this refers to an internal bus).

Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

show more ...

PCI: mvebu: Add support for compiling driver as module

Now when driver uses devm_pci_remap_iospace() function, it is possible
implement ->remove() callback for unbinding device from driver.

Impleme

PCI: mvebu: Add support for compiling driver as module

Now when driver uses devm_pci_remap_iospace() function, it is possible
implement ->remove() callback for unbinding device from driver.

Implement mvebu_pcie_remove() callback with proper cleanup phase, drop
driver's suppress_bind_attrs flag and switch type of CONFIG_PCI_MVEBU
option from bool to tristate.

This allows to compile pci-mvebu.c driver as loadable module pci-mvebu.ko
with ability to unload it.

Link: https://lore.kernel.org/r/20211126144307.7568-3-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

show more ...

PCI: mt7621: Convert driver into 'bool'

The driver is not ready yet to be compiled as a module since it depends
on some symbols not exported on MIPS. We have the following current
problems:

Buil

PCI: mt7621: Convert driver into 'bool'

The driver is not ready yet to be compiled as a module since it depends
on some symbols not exported on MIPS. We have the following current
problems:

Building mips:allmodconfig ... failed
--------------
Error log:
ERROR: modpost: missing MODULE_LICENSE() in drivers/pci/controller/pcie-mt7621.o
ERROR: modpost: "mips_cm_unlock_other" [drivers/pci/controller/pcie-mt7621.ko] undefined!
ERROR: modpost: "mips_cpc_base" [drivers/pci/controller/pcie-mt7621.ko] undefined!
ERROR: modpost: "mips_cm_lock_other" [drivers/pci/controller/pcie-mt7621.ko] undefined!
ERROR: modpost: "mips_cm_is64" [drivers/pci/controller/pcie-mt7621.ko] undefined!
ERROR: modpost: "mips_gcr_base" [drivers/pci/controller/pcie-mt7621.ko] undefined!

Temporarily move from 'tristate' to 'bool' until a better solution is
ready.

Also RALINK is redundant because SOC_MT7621 already depends on it.
Hence, simplify condition.

Fixes: 2bdd5238e756 ("PCI: mt7621: Add MediaTek MT7621 PCIe host controller driver").
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Reviewed-and-Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

show more ...

PCI: brcmstb: Allow building for BMIPS_GENERIC

BMIPS_GENERIC denotes support for the MIPS-based Broadcom STB platforms
which this driver can support.

Signed-off-by: Florian Fainelli <f.fainelli@gma

PCI: brcmstb: Allow building for BMIPS_GENERIC

BMIPS_GENERIC denotes support for the MIPS-based Broadcom STB platforms
which this driver can support.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

show more ...

iommu/dart: Exclude MSI doorbell from PCIe device IOVA range

The MSI doorbell on Apple HW can be any address in the low 4GB range.
However, the MSI write is matched by the PCIe block before hitting

iommu/dart: Exclude MSI doorbell from PCIe device IOVA range

The MSI doorbell on Apple HW can be any address in the low 4GB range.
However, the MSI write is matched by the PCIe block before hitting the
iommu. It must thus be excluded from the IOVA range that is assigned to any
PCIe device.

Link: https://lore.kernel.org/r/20210929163847.2807812-9-maz@kernel.org
Tested-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Sven Peter <sven@svenpeter.dev>

show more ...

PCI: apple: Add initial hardware bring-up

Add a minimal driver to bring up the PCIe bus on Apple system-on-chips,
particularly the Apple M1. This driver exposes the internal bus used for
the USB typ

PCI: apple: Add initial hardware bring-up

Add a minimal driver to bring up the PCIe bus on Apple system-on-chips,
particularly the Apple M1. This driver exposes the internal bus used for
the USB type-A ports, Ethernet, Wi-Fi, and Bluetooth. Bringing up the
radios requires additional drivers beyond what's necessary for PCIe itself.

Co-developed-by: Stan Skowronek <stan@corellium.com>
Link: https://lore.kernel.org/r/20210929163847.2807812-5-maz@kernel.org
Signed-off-by: Stan Skowronek <stan@corellium.com>
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sven Peter <sven@svenpeter.dev>

show more ...

PCI: mt7621: Add MediaTek MT7621 PCIe host controller driver

Add driver for the PCIe controller of the MT7621 SoC.

[bhelgaas: rename from pci-mt7621.c to pcie-mt7621.c; also rename Kconfig
symbol f

PCI: mt7621: Add MediaTek MT7621 PCIe host controller driver

Add driver for the PCIe controller of the MT7621 SoC.

[bhelgaas: rename from pci-mt7621.c to pcie-mt7621.c; also rename Kconfig
symbol from PCI_MT7621 to PCIE_MT7621]
Link: https://lore.kernel.org/r/20210922050035.18162-3-sergio.paracuellos@gmail.com
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

PCI: vmd: depend on !UML

With UML having enabled (simulated) PCI on UML, VMD breaks
allyesconfig/allmodconfig compilation because it assumes
it's running on X86_64 bare metal, and has hardcoded API

PCI: vmd: depend on !UML

With UML having enabled (simulated) PCI on UML, VMD breaks
allyesconfig/allmodconfig compilation because it assumes
it's running on X86_64 bare metal, and has hardcoded API
use of ARCH=x86. Make it depend on !UML to fix this.

Link: https://lore.kernel.org/r/20210811162530.affe26231bc3.I131b3c1e67e3d2ead6e98addd256c835fbef9a3e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Jon Derrick <jonathan.derrick@intel.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested

show more ...