* pci/host-xilinx:
  PCI: xilinx: Make of_device_ids const
  PCI: xilinx-nwl: Modify IRQ chip for legacy interrupts

* pci/host-vmd:
  PCI: vmd: Move SRCU cleanup after bus, child device removal
  PCI: vmd: Correct comment: VMD domains start at 0x10000, not 0x1000

* pci/host-versatile:
  PCI: versatile: Add local struct device pointers

* pci/host-tegra:
  PCI: tegra: Do not allocate MSI target memory
  PCI: tegra: Support MSI 64-bit addressing

* pci/host-rockchip:
  PCI: rockchip: Use normal register bank for config accessors
  PCI: rockchip: Use local struct device pointer consistently
  PCI: rockchip: Check for clk_prepare_enable() errors during resume
  MAINTAINERS: Remove Wenrui Li as Rockchip PCIe driver maintainer
  PCI: rockchip: Configure RC's MPS setting
  PCI: rockchip: Reconfigure configuration space header type
  PCI: rockchip: Split out rockchip_pcie_cfg_configuration_accesses()
  PCI: rockchip: Move configuration accesses into rockchip_pcie_cfg_atu()
  PCI: rockchip: Rename rockchip_cfg_atu() to rockchip_pcie_cfg_atu()
  PCI: rockchip: Control vpcie0v9 for system PM

* pci/host-rcar:
  PCI: rcar-gen2: Make of_device_ids const
  PCI: rcar: Use proper name for the R-Car SoC

* pci/host-qcom:
  PCI: qcom: Limit TLP size to 2K to work around hardware issue
  PCI: qcom: Fix spelling mistake: "asser" -> "assert"
  PCI: qcom: Reorder to put v0 functions together, v1 functions together, etc
  PCI: qcom: Add support for IPQ4019 PCIe controller

* pci/host-mediatek:
  dt-bindings: PCI: Add documentation for MediaTek PCIe
  PCI: mediatek: Add MediaTek PCIe host controller support

* pci/host-kirin:
  PCI: kirin: Add HiSilicon Kirin SoC PCIe controller driver

Rockchip's RC has two banks of registers for the root port: a normal bank
that is strictly compatible with the PCIe spec, and a privileged bank that
can be used to change RO bits of root port registers.

When probing the RC driver, we use the privileged bank to do some basic
setup work as some RO bits are hw-inited to wrong value.  But we didn't
change to the normal bank after probing the driver.

This leads to a serious problem when the PME code tries to clear the PME
status by writing PCI_EXP_RTSTA_PME to the register of PCI_EXP_RTSTA.  Per
PCIe 3.0 spec, section 7.8.14, the PME status bit is RW1C.  So the PME code
is doing the right thing to clear the PME status but we find the RC doesn't
clear it but actually setting it to one.  So finally the system trap in
pcie_pme_work_fn() as PCI_EXP_RTSTA_PME is true now forever.  This issue
can be reproduced by booting kernel with pci=nomsi.

Use the normal register bank for the PCI config accessors.  The privileged
bank is used only internally by this driver.

Fixes: e77f847d ("PCI: rockchip: Add Rockchip PCIe controller support")
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org
Cc: Jeffy Chen <jeffy.chen@rock-chips.com>
Cc: Brian Norris <briannorris@chromium.org>

Add documentation for PCIe host driver available in MT7623 series SoCs.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>

* pci/host-imx6:
  PCI: imx6: Add regulator support

* pci/host-hv:
  PCI: hv: Use vPCI protocol version 1.2
  PCI: hv: Add vPCI version protocol negotiation
  PCI: hv: Temporary own CPU-number-to-vCPU-number infra
  PCI: hv: Use page allocation for hbus structure
  PCI: hv: Fix comment formatting and use proper integer fields

* pci/host-faraday:
  PCI: faraday: Add clock handling
  PCI: faraday: Add clock bindings

* pci/host-dra7xx:
  PCI: dwc: dra7xx: Use RW1C for IRQSTATUS_MSI and IRQSTATUS_MAIN
  PCI: dwc: dra7xx: Depend on appropriate SoC or compile test

* pci/host-designware:
  PCI: dwc: Constify dw_pcie_host_ops structures
  PCI: host: Mark PCIe/PCI (MSI) cascade ISR as IRQF_NO_THREAD

* pci/irq-fixups:
  arm64: PCI: Drop DT IRQ allocation from pcibios_alloc_irq()
  PCI: xilinx-nwl: Move to struct pci_host_bridge IRQ mapping functions
  PCI: rockchip: Move to struct pci_host_bridge IRQ mapping functions
  PCI: xgene: Move to struct pci_host_bridge IRQ mapping functions
  PCI: altera: Drop pci_fixup_irqs()
  PCI: versatile: Drop pci_fixup_irqs()
  PCI: generic: Drop pci_fixup_irqs()
  PCI: faraday: Drop pci_fixup_irqs()
  PCI: designware: Drop pci_fixup_irqs()
  PCI: iproc: Drop pci_fixup_irqs()
  PCI: rcar: Drop pci_fixup_irqs()
  PCI: xilinx: Drop pci_fixup_irqs()
  PCI: tegra: Drop pci_fixup_irqs()
  ARM/PCI: Remove pci_fixup_irqs() call for bios32 host controllers
  PCI: Add a call to pci_assign_irq() in pci_device_probe()
  OF/PCI: Update of_irq_parse_and_map_pci() comment
  PCI: Add pci_assign_irq() function and have pci_fixup_irqs() use it
  PCI: Add IRQ mapping function pointers to pci_host_bridge struct
  PCI: Build setup-irq.o on all arches
  PCI: Remove pci_scan_root_bus_msi()
  PCI: xilinx-nwl: Convert PCI scan API to pci_scan_root_bus_bridge()
  PCI: rockchip: Convert PCI scan API to pci_scan_root_bus_bridge()
  PCI: generic: Convert PCI scan API to pci_scan_root_bus_bridge()
  PCI: xgene: Convert PCI scan API to pci_scan_root_bus_bridge()
  PCI: xilinx: Convert PCI scan API to pci_scan_root_bus_bridge()
  PCI: altera: Convert PCI scan API to pci_scan_root_bus_bridge()
  PCI: versatile: Convert PCI scan API to pci_scan_root_bus_bridge()
  PCI: iproc: Convert PCI scan API to pci_scan_root_bus_bridge()
  PCI: rcar: Convert PCI scan API to pci_scan_root_bus_bridge()
  PCI: aardvark: Convert PCI scan API to pci_scan_root_bus_bridge()
  PCI: designware: Convert PCI scan API to pci_scan_root_bus_bridge()
  ARM/PCI: Convert PCI scan API to pci_scan_root_bus_bridge()
  PCI: Make pci_register_host_bridge() PCI core internal
  PCI: Add pci_scan_root_bus_bridge() interface
  PCI: tegra: Fix host bridge memory leakage
  PCI: faraday: Fix host bridge memory leakage
  PCI: Add devm_pci_alloc_host_bridge() interface
  PCI: Add pci_free_host_bridge() interface
  PCI: Initialize bridge release function at bridge allocation
  PCI: faraday: Convert IRQ masking to raw PCI config accessors
  PCI: iproc: Convert link check to raw PCI config accessors
  PCI: xilinx-nwl: Remove nwl_pcie_enable_msi() unused bus parameter

* pci/virtualization:
  PCI: Remove __pci_dev_reset() and pci_dev_reset()
  PCI: Split ->reset_notify() method into ->reset_prepare() and ->reset_done()
  PCI: Protect pci_error_handlers->reset_notify() usage with device_lock()
  PCI: Protect pci_driver->sriov_configure() usage with device_lock()
  PCI: Mark Intel XXV710 NIC INTx masking as broken
  PCI: Restore PRI and PASID state after Function-Level Reset
  PCI: Cache PRI and PASID bits in pci_dev

Implement the reset probing / reset chain directly in
__pci_probe_reset_function() and __pci_reset_function_locked()
respectively.

Link: http://lkml.kernel.org/r/20170601111039.8913-4-hch@lst.deSigned-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

The pci_error_handlers->reset_notify() method had a flag to indicate
whether to prepare for or clean up after a reset.  The prepare and done
cases have no shared functionality whatsoever, so split them into separate
methods.

[bhelgaas: changelog, update locking comments]
Link: http://lkml.kernel.org/r/20170601111039.8913-3-hch@lst.deSigned-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

* pci/switchtec:
  switchtec: Add device IDs for additional Switchtec products
  switchtec: Add "running" status flag to fw partition info ioctl

* pci/resource:
  PCI: Work around poweroff & suspend-to-RAM issue on Macbook Pro 11
  PCI: Do not disregard parent resources starting at 0x0

Conflicts:
arch/x86/pci/fixup.c

* pci/portdrv:
  PCI/portdrv: Allocate MSI/MSI-X vector for Downstream Port Containment
  PCI/portdrv: Support multiple interrupts for MSI as well as MSI-X

* pci/pm:
  PCI/PM: Avoid using device_may_wakeup() for runtime PM
  x86/PCI: Avoid AMD SB7xx EHCI USB wakeup defect
  PCI/PM: Restore the status of PCI devices across hibernation
  drm/radeon: make MacBook Pro d3_delay quirk more generic
  drm/amdgpu: remove unnecessary save/restore of pdev->d3_delay
  PCI/PM: Add needs_resume flag to avoid suspend complete optimization
  PCI: imx6: Fix config read timeout handling
  switchtec: Fix minor bug with partition ID register
  switchtec: Use new cdev_device_add() helper function
  PCI: endpoint: Make PCI_ENDPOINT depend on HAS_DMA

* pci/msi:
  PCI/MSI: Ignore affinity if pre/post vector count is more than min_vecs

* pci/misc:
  x86/PCI: Simplify Dell DMI B1 quirk
  PCI: Add domain number check to find_smbios_instance_string()
  x86/PCI: Fix whitespace in set_bios_x() printk
  PCI: Correct PCI_STD_RESOURCE_END usage
  efi/fb: Correct PCI_STD_RESOURCE_END usage
  MIPS: PCI: Remove unused busn_offset
  MIPS: Loongson: Remove unused PCI_BAR_COUNT definition

* pci/enumeration:
  PCI: Enable ECRC only if device supports it
  PCI: Add sysfs max_link_speed/width, current_link_speed/width, etc
  PCI: Test INTx masking during enumeration, not at run-time

* pci/dpc:
  PCI/DPC: Fix control register setting
  PCI/DPC: Skip DPC event if device is not present

of_device_ids are not supposed to change at runtime.  All functions working
with of_device_ids provided by <linux/of.h> work with const of_device_ids.
So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
    195	    600	      0	    795	    31b	drivers/pci/host/pcie-xilinx.o

File size after constify xilinx_pcie_of_match:
   text	   data	    bss	    dec	    hex	filename
    595	    184	      0	    779	    30b	drivers/pci/host/pcie-xilinx.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

- Add spinlock for protecting legacy mask register

- Few wifi end points which only support legacy interrupts, performs
  hardware reset functionalities after disabling interrupts by invoking
  disable_irq() and then re-enable using enable_irq(), they enable hardware
  interrupts first and then virtual IRQ line later.

- The legacy IRQ line goes low only after DEASSERT_INTx is received.  As
  the legacy IRQ line is high immediately after hardware interrupts are
  enabled but virq of EP is still in disabled state and EP handler is never
  executed resulting no DEASSERT_INTx.  If dummy IRQ chip is used,
  interrupts are not masked and system hangs with CPU stall.

- Add IRQ chip functions instead of dummy IRQ chip for legacy interrupts.

- Legacy interrupts are level sensitive, so using handle_level_irq() is
  more appropriate as it is masks interrupts until Endpoint handles
  interrupts and unmasks interrupts after Endpoint handler is executed.

- Legacy interrupts are level triggered, virtual IRQ line of EndPoint shows
  as edge in /proc/interrupts.

- Set IRQ flags of virtual IRQ line of EP to level triggered at the time of
  mapping.
Signed-off-by: Bharat Kumar Gogada <bharatku@xilinx.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Recent __call_srcu() changes have exposed that we need to cleanup SRCU
structures after pci_stop_root_bus() calls into vmd_msi_free().

Fixes: 3906b918 ("PCI: vmd: Use SRCU as a local RCU to prevent delaying global RCU")
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Keith Busch <keith.busch@intel.com>
Cc: <stable@vger.kernel.org> # 4.11

VMD domains are allocated starting at 0x10000, not 0x1000 as the comment
said.  Correct the comment and add a reference to the ACPI spec for _SEG.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>

Use a local "struct device *dev" for brevity and consistency with other
drivers.  No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

The PCI host bridge found on Tegra SoCs doesn't require the MSI target
address to be backed by physical system memory.  Writes are intercepted
within the controller and never make it to the memory pointed to.

Since no actual system memory is required, remove the allocation of a
single page and hardcode the MSI target address with a special address that
maps to the last 4 KiB page within the range that is reserved for system
memory and memory-mapped I/O in the FPCI address map.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Stephen Warren <swarren@nvidia.com>

The MSI target address can reside beyond the 32-bit boundary on devices
with more than 2 GiB of system memory.  The PCI host bridge on Tegra can
easily support 64-bit addresses, so make sure to pass the upper 32 bits of
the target address to endpoints when allocating MSI entries.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Stephen Warren <swarren@nvidia.com>

We have a local "struct device *dev" in rockchip_pcie_probe().  Use it
consistently throughout the function.  No functional change intended.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

clk_prepare_enable() can fail here and we must check its return value.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Shawn Lin <shawn.lin@rock-chips.com>

Wenrui Li changed his employer and is no longer able to maintain the
Rockchip PCIe driver, so remove his email address from this file.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

The default value of MPS for RC is 128 bytes, but actually it could support
256 bytes.  So this patch fixes this issue.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Per PCIe base specification (Revision 3.1a), section 7.5.3, type 1
configuration space header should be used when accessing PCIe switch.  So
we need to reconfigure the header according to the bus number we are
accessing.  Otherwise we could not visit the buses behind the switch.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>