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git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Use EXPLICIT_RELOCS (ABIv2.0)
- Use generic BUG() handler
- Refactor TLB/Cache operations
- Add qspinlock support
- Add perf events support
- Add kexec/kdump support
- Add BPF JIT support
- Add ACPI-based laptop driver
- Update the default config file
* tag 'loongarch-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (25 commits)
LoongArch: Update Loongson-3 default config file
LoongArch: Add ACPI-based generic laptop driver
LoongArch: Add BPF JIT support
LoongArch: Add some instruction opcodes and formats
LoongArch: Move {signed,unsigned}_imm_check() to inst.h
LoongArch: Add kdump support
LoongArch: Add kexec support
LoongArch: Use generic BUG() handler
LoongArch: Add SysRq-x (TLB Dump) support
LoongArch: Add perf events support
LoongArch: Add qspinlock support
LoongArch: Use TLB for ioremap()
LoongArch: Support access filter to /dev/mem interface
LoongArch: Refactor cache probe and flush methods
LoongArch: mm: Refactor TLB exception handlers
LoongArch: Support R_LARCH_GOT_PC_{LO12,HI20} in modules
LoongArch: Support PC-relative relocations in modules
LoongArch: Define ELF relocation types added in ABIv2.0
LoongArch: Adjust symbol addressing for AS_HAS_EXPLICIT_RELOCS
LoongArch: Add Kconfig option AS_HAS_EXPLICIT_RELOCS
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This add ACPI-based generic laptop driver for Loongson-3. Some of the
codes are derived from drivers/platform/x86/thinkpad_acpi.c.
Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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LoongArch architecture changes for 6.1 depend on the efi changes to
work, so merge them to create a base.
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull interrupt updates from Thomas Gleixner:
"Core code:
- Provide a generic wrapper which can be utilized in drivers to
handle the problem of force threaded demultiplex interrupts on RT
enabled kernels. This avoids conditionals and horrible quirks in
drivers all over the place
- Fix up affected pinctrl and GPIO drivers to make them cleanly RT
safe
Interrupt drivers:
- A new driver for the FSL MU platform specific MSI implementation
- Make irqchip_init() available for pure ACPI based systems
- Provide a functional DT binding for the Realtek RTL interrupt chip
- The usual DT updates and small code improvements all over the
place"
* tag 'irq-core-2022-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
irqchip: IMX_MU_MSI should depend on ARCH_MXC
irqchip/imx-mu-msi: Fix wrong register offset for 8ulp
irqchip/ls-extirq: Fix invalid wait context by avoiding to use regmap
dt-bindings: irqchip: Describe the IMX MU block as a MSI controller
irqchip: Add IMX MU MSI controller driver
dt-bindings: irqchip: renesas,irqc: Add r8a779g0 support
irqchip/gic-v3: Fix typo in comment
dt-bindings: interrupt-controller: ti,sci-intr: Fix missing reg property in the binding
dt-bindings: irqchip: ti,sci-inta: Fix warning for missing #interrupt-cells
irqchip: Allow extra fields to be passed to IRQCHIP_PLATFORM_DRIVER_END
platform-msi: Export symbol platform_msi_create_irq_domain()
irqchip/realtek-rtl: use parent interrupts
dt-bindings: interrupt-controller: realtek,rtl-intc: require parents
irqchip/realtek-rtl: use irq_domain_add_linear()
irqchip: Make irqchip_init() usable on pure ACPI systems
bcma: gpio: Use generic_handle_irq_safe()
gpio: mlxbf2: Use generic_handle_irq_safe()
platform/x86: intel_int0002_vgpio: Use generic_handle_irq_safe()
ssb: gpio: Use generic_handle_irq_safe()
pinctrl: amd: Use generic_handle_irq_safe()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip fixes from Marc Zyngier:
- Fix IMX-MU Kconfig, keeping it private to IMX
- Fix a register offset for the same IMX-MU driver
- Fix the ls-extirq irqchip driver that would use the wrong
flavour of spinlocks
Link: https://lore.kernel.org/r/20221012075125.1244143-1-maz@kernel.org
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The Freescale/NXP i.MX Messaging Unit is only present on Freescale/NXP
i.MX SoCs. Hence add a dependency on ARCH_MXC, to prevent asking the
user about this driver when configuring a kernel without Freescale/NXP
i.MX SoC family support.
While at it, expand "MU" to "Messaging Unit" in the help text.
Fixes: 70afdab904d2d1e6 ("irqchip: Add IMX MU MSI controller driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/7f3bd932614ddbff46a1b750ef45b231130364ad.1664900434.git.geert+renesas@glider.be
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Offset 0x124 should be for IMX_MU_TSR, not IMX_MU_GSR.
Fixes: 70afdab904d2 ("irqchip: Add IMX MU MSI controller driver")
Reported-by: Colin King <colin.i.king@gmail.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
[maz: updated commit message, tags]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221004202414.216577-1-Frank.Li@nxp.com
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The irqchip->irq_set_type method is called by __irq_set_trigger() under
the desc->lock raw spinlock.
The ls-extirq implementation, ls_extirq_irq_set_type(), uses an MMIO
regmap created by of_syscon_register(), which uses plain spinlocks
(the kind that are sleepable on RT).
Therefore, this is an invalid locking scheme for which we get a kernel
splat stating just that ("[ BUG: Invalid wait context ]"), because the
context in which the plain spinlock may sleep is atomic due to the raw
spinlock. We need to go raw spinlocks all the way.
Make this driver ioremap its INTPCR register on its own, and stop
relying on syscon to provide a regmap.
Fixes: 0dcd9f872769 ("irqchip: Add support for Layerscape external interrupt lines")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
[maz: trimmed down commit log]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220728144254.175385-1-vladimir.oltean@nxp.com
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git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip updates from Marc Zyngier:
- A new driver for the FSL MU widget that provides platform MSI
- An update for the Realtek RTL irqchip to use a DT binding that
actually describes the hardware
- A handful of DT updates, as well as minor code and spelling fixes
Link: https://lore.kernel.org/r/20221002125554.3902840-1-maz@kernel.org
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* irq/misc-6.1:
: .
: Misc irqchip updates for 6.1:
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: - Allow generic irqchip support without selecting CONFIG_OF_IRQ
:
: - Fix a couple of bindings for TI interrupts controllers
:
: - Yet another binding update for a Renesas SoC
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: - The obligatory fixes from the spelling police
: .
dt-bindings: irqchip: renesas,irqc: Add r8a779g0 support
irqchip/gic-v3: Fix typo in comment
dt-bindings: interrupt-controller: ti,sci-intr: Fix missing reg property in the binding
dt-bindings: irqchip: ti,sci-inta: Fix warning for missing #interrupt-cells
irqchip: Make irqchip_init() usable on pure ACPI systems
Signed-off-by: Marc Zyngier <maz@kernel.org>
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Fix typo in comment (cleanip/cleanup).
Signed-off-by: Zhiyuan Dai <daizhiyuan@phytium.com.cn>
[maz: commit message]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1664332767-6909-1-git-send-email-daizhiyuan@phytium.com.cn
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Pure ACPI systems (e.g., LoongArch) do not need OF_IRQ, but still
require irqchip_init() to perform the ACPI irqchip probing,
even when OF_IRQ isn't selected.
Relax the dependency to enable the generic irqchip support when
ACPI_GENERIC_GSI is configured.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Tested-by: Tiezhu Yang <yangtiezhu@loongson.cn>
[maz: revamped commit message]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220927124557.3246737-1-chenhuacai@loongson.cn
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* irq/rtl-imap-deprecation:
: .
: Deprecate interrupt-map property for realtek-rtl irqchip
:
: Patches from Sander Vanheule.
: .
irqchip/realtek-rtl: use parent interrupts
dt-bindings: interrupt-controller: realtek,rtl-intc: require parents
irqchip/realtek-rtl: use irq_domain_add_linear()
Signed-off-by: Marc Zyngier <maz@kernel.org>
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The interrupt-map property for "realtek,rtl-intc" has been deprecated in
favor of a list of parent interrupts. Drop the open-coded parser for
interrupt-map, and use the first parent interrupt instead. If no parent
was provided, the driver will assume that this is the first hardware
interrupt of the SoC's MIPS CPU for compatibility with the legacy binding.
All SoC interrupts were treated equally, independent of which output
they were actually routed to. This means the driver might as well route
all interrupts to the first output, and achieve the same behaviour.
Without the interrupt-map property, interrupt usage information is no
longer available at initialisation. Routing setup will now happen later,
when a hardware interrupt is mapped by the subsystem.
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/5f901a82eaa9d97cadf6e9b73a894a92f3f83b7c.1663617425.git.sander@svanheule.net
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When using an offset of 0, irq_domain_add_simple() is identical to
irq_domain_add_linear() on DT-based systems, so use the latter instead.
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/0c4cd9f7661a30a4cb7ab9881c4a94bc8a379162.1663617425.git.sander@svanheule.net
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The MU block found in a number of Freescale/NXP SoCs supports generating
IRQs by writing data to a register.
This enables the MU block to be used as a MSI controller, by leveraging
the platform-MSI API.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
[maz: dropped pointless dma-iommu.h and of_pci.h includes]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220922161246.20586-4-Frank.Li@nxp.com
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Allow irqchip drivers using platform MSI to be built as modules.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
[maz: rewrote commit message]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220922161246.20586-2-Frank.Li@nxp.com
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On PREEMPT_RT enabled kernels the demultiplex interrupt handler is force
threaded and runs with interrupts enabled. The invocation of
generic_handle_irq() with interrupts enabled triggers a lockdep warning due
to a non-irq safe lock acquisition.
Instead of disabling interrupts on the driver level, use
generic_handle_domain_irq_safe().
[ tglx: Split out from combo patch ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/YnkfWFzvusFFktSt@linutronix.de
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On PREEMPT_RT enabled kernels the demultiplex interrupt handler is force
threaded and runs with interrupts enabled. The invocation of
generic_handle_irq() with interrupts enabled triggers a lockdep warning due
to a non-irq safe lock acquisition.
Instead of disabling interrupts on the driver level, use
generic_handle_domain_irq_safe().
[ tglx: Split out from combo patch ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/YnkfWFzvusFFktSt@linutronix.de
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On PREEMPT_RT enabled kernels the demultiplex interrupt handler is force
threaded and runs with interrupts enabled. The invocation of
generic_handle_irq() with interrupts enabled triggers a lockdep warning due
to a non-irq safe lock acquisition.
Instead of disabling interrupts on the driver level, use
generic_handle_domain_irq_safe().
[ tglx: Split out from combo patch ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/YnkfWFzvusFFktSt@linutronix.de
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On PREEMPT_RT enabled kernels the demultiplex interrupt handler is force
threaded and runs with interrupts enabled. The invocation of
generic_handle_domain_irq() with interrupts enabled triggers a lockdep
warning due to a non-irq safe lock acquisition.
Instead of disabling interrupts on the driver level, use
generic_handle_domain_irq_safe().
[ tglx: Split out from combo patch ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/YnkfWFzvusFFktSt@linutronix.de
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On PREEMPT_RT enabled kernels the demultiplex interrupt handler is force
threaded and runs with interrupts enabled. The invocation of
generic_handle_domain_irq() with interrupts enabled triggers a lockdep
warning due to a non-irq safe lock acquisition.
Instead of disabling interrupts on the driver level, use
generic_handle_domain_irq_safe().
[ tglx: Split out from combo patch ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/YnkfWFzvusFFktSt@linutronix.de
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215954
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci updates from Bjorn Helgaas:
"Resource management:
- Distribute spare resources to unconfigured hotplug bridges at
boot-time (not just when hot-adding such a bridge), which makes
hot-adding devices to docks work better.
- Revert to a BAR assignment inherited from firmware only when the
address is actually reachable via any upstream bridges, which fixes
some cases where firmware doesn't configure all devices.
- Add a sysfs interface to resize BARs so this can be done before
assigning devices to a VM through VFIO.
Power management:
- Disable Precision Time Management for all devices on suspend to
enable lower-power PM state. We previously did this just for Root
Ports, which isn't enough because downstream devices can still
generate PTM messages, which cause errors if it's disabled in the
Root Port.
- Save and restore the ASPM L1 PM Substates configuration for
suspend/ resume. Previously this configuration was lost, so L1.x
states likely stopped working after resume.
- Check whether the L1 PM Substates Capability exists. If it didn't
exist, we previously read junk and tried to configure L1 Substates
based on that.
- Fix the LTR_L1.2_THRESHOLD computation, which previously set a
threshold for entering L1.2 that was too low in some cases.
- Reduce the delay after transitions to or from D3cold by using
usleep_range() rather than msleep(), which often slept for ~19ms
instead of the 10ms normally required. The spec says 10ms is
enough, but it's possible we could trip over devices that need a
little more.
Error handling:
- Work around a BIOS bug that caused Intel Root Ports to advertise a
Root Port Programmed I/O (RP PIO) log size of zero, which caused
annoying warnings and prevented the kernel from dumping log
registers for DPC errors.
Qualcomm PCIe controller driver:
- Add support for SC8280XP and SA8540P host controllers and SM8450
endpoint controller.
- Disable Master AXI clock on endpoint controllers to save power when
link is idle or in L1.x.
- Expose link state transition counts via debugfs to help debug
issues with low-power states.
- Add auto-loading module support.
Synopsys DesignWare PCIe controller driver:
- Remove a dependency on ZONE_DMA32 by allocating the MSI target page
differently. There's more work to do related to eDMA controllers,
so it's not completely settled"
* tag 'pci-v6.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (71 commits)
PCI: qcom-ep: Check platform_get_resource_byname() return value
PCI: qcom-ep: Add support for SM8450 SoC
dt-bindings: PCI: qcom-ep: Add support for SM8450 SoC
dt-bindings: PCI: qcom-ep: Define clocks per platform
PCI: qcom-ep: Make PERST separation optional
dt-bindings: PCI: qcom-ep: Make PERST separation optional
PCI: qcom-ep: Disable Master AXI Clock when there is no PCIe traffic
PCI: Expose PCIe Resizable BAR support via sysfs
PCI/ASPM: Correct LTR_L1.2_THRESHOLD computation
PCI/ASPM: Ignore L1 PM Substates if device lacks capability
PCI/ASPM: Factor out L1 PM Substates configuration
PCI: qcom-ep: Gate Master AXI clock to MHI bus during L1SS
PCI: qcom-ep: Expose link transition counts via debugfs
PCI: qcom-ep: Disable IRQs during driver remove
PCI/ASPM: Save L1 PM Substates Capability for suspend/resume
PCI/ASPM: Refactor L1 PM Substates Control Register programming
PCI: qcom-ep: Make use of the cached dev pointer
PCI: qcom-ep: Rely on the clocks supplied by devicetree
PCI: qcom-ep: Add kernel-doc for qcom_pcie_ep structure
phy: freescale: imx8m-pcie: Fix the wrong order of phy_init() and phy_power_on()
...
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- Use the for_each_pci_dev() helper instead of open-coding it (Yang
Yingliang)
* pci/misc:
PCI/P2PDMA: Use for_each_pci_dev() helper
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Use for_each_pci_dev() instead of open-coding it. No functional change.
Link: https://lore.kernel.org/r/20220916140329.679633-1-yangyingliang@huawei.com
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
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- Add macros for PCI Configuration Mechanism #1 and use them in the
ftpci100, mt7621, and tegra drivers (Pali Rohár)
* remotes/lorenzo/pci/misc:
PCI: tegra: Use PCI_CONF1_EXT_ADDRESS() macro
PCI: mt7621: Use PCI_CONF1_EXT_ADDRESS() macro
PCI: ftpci100: Use PCI_CONF1_ADDRESS() macro
PCI: Add standard PCI Config Address macros
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Simplify pci-tegra.c driver code and use new PCI_CONF1_EXT_ADDRESS() macro
for accessing PCI config space.
Link: https://lore.kernel.org/r/20220928121911.14994-1-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Acked-by: Thierry Reding <treding@nvidia.com>
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Simplify pcie-mt7621.c driver code and use new PCI_CONF1_EXT_ADDRESS()
macro for accessing PCIe config space.
Link: https://lore.kernel.org/r/20220924092404.31776-4-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
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Simplify pci-ftpci100.c driver code and use new PCI_CONF1_ADDRESS() macro
for accessing PCI config space.
Link: https://lore.kernel.org/r/20220924092404.31776-3-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
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Lot of PCI and PCIe controllers are using standard Config Address for PCI
Configuration Mechanism #1 (as defined in PCI Local Bus Specification) or
its extended version.
So introduce new macros PCI_CONF1_ADDRESS() and PCI_CONF1_EXT_ADDRESS() in
include file drivers/pci/pci.h which can be suitable for PCI and PCIe
controllers which uses this type of access to PCI config space.
Link: https://lore.kernel.org/r/20220924092404.31776-2-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
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- List platforms that use a single MSI host interrupt in qcom DT (Johan
Hovold)
- Add SC8280XP, SA8540P support to qcom DT binding and driver(Johan Hovold)
- Make all optional clocks truly optional in the driver (Johan Hovold)
- Rename per-IP structs to reflect the IP version (Johan Hovold)
- Sort device ID match table by compatible string (Johan Hovold)
- Add MODULE_DEVICE_TABLE to enable module autoloading (Dmitry Baryshkov)
- Drop the unused .post_deinit() callback (Johan Hovold)
- Rely on DT for clock information instead of hard-coding it in the driver
(Manivannan Sadhasivam)
- Disable IRQs when removing driver to avoid spurious IRQs later
(Manivannan Sadhasivam)
- Expose link transition counts via debugfs to help debug issues with
low-power states (Manivannan Sadhasivam)
- Gate Master AXI clock to the MHI bus while in L1 substates to save power
(Manivannan Sadhasivam)
- Disable Master AXI clock to save power when there is no traffic on PCIe
(Manivannan Sadhasivam)
- Make the "PERST separation" debug feature optional in the DT and the
driver (Manivannan Sadhasivam)
- Define clocks to be per-platform in DT to prepare for future SoCs
(Manivannan Sadhasivam)
- Add SM8450 SoC support (Manivannan Sadhasivam)
- Check for platform_get_resource_byname() to avoid a NULL pointer
dereference (Yang Yingliang)
* pci/qcom:
PCI: qcom-ep: Check platform_get_resource_byname() return value
PCI: qcom-ep: Add support for SM8450 SoC
dt-bindings: PCI: qcom-ep: Add support for SM8450 SoC
dt-bindings: PCI: qcom-ep: Define clocks per platform
PCI: qcom-ep: Make PERST separation optional
dt-bindings: PCI: qcom-ep: Make PERST separation optional
PCI: qcom-ep: Disable Master AXI Clock when there is no PCIe traffic
PCI: qcom-ep: Gate Master AXI clock to MHI bus during L1SS
PCI: qcom-ep: Expose link transition counts via debugfs
PCI: qcom-ep: Disable IRQs during driver remove
PCI: qcom-ep: Make use of the cached dev pointer
PCI: qcom-ep: Rely on the clocks supplied by devicetree
PCI: qcom-ep: Add kernel-doc for qcom_pcie_ep structure
PCI: qcom: Rename host-init error label
PCI: qcom: Drop unused post_deinit callback
PCI: qcom-ep: Add MODULE_DEVICE_TABLE
PCI: qcom: Sort device-id table
PCI: qcom: Clean up IP configurations
PCI: qcom: Make all optional clocks optional
PCI: qcom: Add support for SA8540P
PCI: qcom: Add support for SC8280XP
dt-bindings: PCI: qcom: Add SA8540P to binding
dt-bindings: PCI: qcom: Add SC8280XP to binding
dt-bindings: PCI: qcom: Enumerate platforms with single msi interrupt
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If platform_get_resource_byname() fails, 'mmio_res' will be set to NULL
pointer, which causes a NULL pointer dereference when it is used in
qcom_pcie_perst_deassert().
Check the return value to prevent it.
Link: https://lore.kernel.org/r/20220429080740.1294797-1-yangyingliang@huawei.com
Fixes: f55fee56a631 ("PCI: qcom-ep: Add Qualcomm PCIe Endpoint controller driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
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Add support for SM8450 SoC to the Qualcomm PCIe Endpoint Controller
driver. The driver uses the same config as the existing SDX55 chipset,
so additional settings are not required.
Link: https://lore.kernel.org/r/20220914075350.7992-13-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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PERST separation is an optional debug feature used to collect the crash
dump from the PCIe endpoint devices by the PCIe host when the endpoint
crashes. This feature keeps the PCIe link up by separating the PCIe IP
block from the SoC reset logic.
Make the property optional in the driver.
Link: https://lore.kernel.org/r/20220914075350.7992-10-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The Master AXI clock can be disabled when it is not used i.e., when there
is no traffic on the PCIe bus. This helps to save power during idle state.
[bhelgaas: tidy and wrap comment]
Link: https://lore.kernel.org/r/20220914075350.7992-8-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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During L1SS, gate the Master clock supplied to the MHI bus to save power.
Link: https://lore.kernel.org/r/20220914075350.7992-7-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
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Qualcomm PCIe controllers have debug registers in the MMIO region
that count PCIe link transitions. Expose them over debugfs to
userspace to help debug the low power issues.
Link: https://lore.kernel.org/r/20220914075350.7992-6-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
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Disable the Global and PERST IRQs during driver remove to avoid getting
spurious IRQs after resource deallocation.
Link: https://lore.kernel.org/r/20220914075350.7992-5-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
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In the qcom_pcie_ep_get_resources() function, dev pointer is already
cached in a local variable. So let's make use of it instead of getting
the dev pointer again from pdev struct.
Link: https://lore.kernel.org/r/20220914075350.7992-4-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
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Generally, device drivers should just rely on the platform data like
devicetree to supply the clocks required for the functioning of the
peripheral. There is no need to hardcode the clk info in the driver.
So get rid of the static clk info and obtain the platform supplied
clks.
The total number of clocks supplied is obtained using the
devm_clk_bulk_get_all() API and used for the rest of the clk_bulk_ APIs.
Link: https://lore.kernel.org/r/20220914075350.7992-3-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
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Add kernel-doc for qcom_pcie_ep structure.
Link: https://lore.kernel.org/r/20220914075350.7992-2-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
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Use a more descriptive name for the reset host-init error label for
consistency.
Link: https://lore.kernel.org/r/20220928155421.21660-3-johan+linaro@kernel.org
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
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Drop the unused and confusingly named post_deinit callback that was
added for the now removed pipe clock handling.
If ever needed we can add back a callback named pre_deinit (or perhaps
rather pre_phy_power_off) instead.
Link: https://lore.kernel.org/r/20220928155421.21660-2-johan+linaro@kernel.org
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
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Add MODULE_DEVICE_TABLE to enable module autoloading for respective
device.
Link: https://lore.kernel.org/r/20220430084740.3769925-1-dmitry.baryshkov@linaro.org
Fixes: f55fee56a631 ("PCI: qcom-ep: Add Qualcomm PCIe Endpoint controller driver")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
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Sort the device-id table entries alphabetically by compatible string to
make it easier to find entries and add new ones.
Link: https://lore.kernel.org/r/20220714071348.6792-9-johan+linaro@kernel.org
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Brian Masney <bmasney@redhat.com>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>
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The various IP versions have different configurations that are encoded
in separate sets of operation callbacks. Currently, there is no need for
also maintaining corresponding sets of data parameters, but it is
conceivable that these may again be found useful (e.g. to implement
minor variations of the operation callbacks).
Rename the default configuration structures after the IP version they
apply to so that they can more easily be reused by different SoCs.
Note that SoC specific configurations can be added later if need arises
(e.g. cfg_sc8280xp).
Link: https://lore.kernel.org/r/20220714071348.6792-8-johan+linaro@kernel.org
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Brian Masney <bmasney@redhat.com>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>
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The kernel is not a devicetree validator and does not need to re-encode
information which is already available in the devicetree.
This is specifically true for the optional PCIe clocks, some of which
are really interconnect clocks.
Treat also the 2.7.0 optional clocks as truly optional instead of
maintaining a list of clocks per compatible (including two compatible
strings for the two identical controllers on sm8450) just to validate
the devicetree.
Link: https://lore.kernel.org/r/20220714071348.6792-7-johan+linaro@kernel.org
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Brian Masney <bmasney@redhat.com>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>
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The SA8540P platform has five PCIe controllers: two 4-lane, two 2-lane
and one 1-lane.
Add a new "qcom,pcie-sa8540p" compatible string and reuse the 1.9.0 ops.
Note that like for SC8280XP, the SA8540P controllers need two or three
interconnect clocks to be enabled.
Link: https://lore.kernel.org/r/20220714071348.6792-6-johan+linaro@kernel.org
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Brian Masney <bmasney@redhat.com>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>
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The SC8280XP platform has seven PCIe controllers: two used with USB4,
two 4-lane, two 2-lane and one 1-lane.
Add a new "qcom,pcie-sc8280xp" compatible string and reuse the 1.9.0
ops.
Note that the SC8280XP controllers need two or three interconnect
clocks to be enabled. Model these as optional clocks to avoid encoding
devicetree data in the PCIe driver.
Note that the same could be done for the SM8450 interconnect clocks and
possibly also for the TBU clocks.
Link: https://lore.kernel.org/r/20220714071348.6792-5-johan+linaro@kernel.org
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>
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- Fix endianness of emulated bridge iolimitupper, iobaseupper, memlimit and
membase members (Pali Rohár)
* remotes/lorenzo/pci/mvebu:
PCI: mvebu: Fix endianness when accessing PCI emul bridge members
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