| Commit message (Collapse) | Author | Age |
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On ARM/ARM64 architectures, PCI IO ports are emulated through memory mapped
IO, by reserving a chunk of virtual address space starting at PCI_IOBASE
and by mapping the PCI host bridges memory address space driving PCI IO
cycles to it.
PCI host bridge drivers that enable downstream PCI IO cycles map the host
bridge memory address responding to PCI IO cycles to the fixed virtual
address space through the pci_remap_iospace() API.
This means that if the pci_remap_iospace() function fails, the
corresponding host bridge PCI IO resource must be considered invalid, in
that there is no way for the kernel to actually drive PCI IO transactions
if the memory addresses responding to PCI IO cycles cannot be mapped into
the CPU virtual address space.
The PCI versatile host bridge driver does not remove the PCI IO resource
from the host bridge resource windows if the pci_remap_iospace() call
fails; this is an actual bug in that the PCI host bridge would consider the
PCI IO resource valid (and possibly assign it to downstream devices) even
if the kernel was not able to map the PCI host bridge memory address
driving IO cycle to the CPU virtual address space (ie pci_remap_iospace()
failures).
Fix the PCI host bridge driver pci_remap_iospace() failure path, by
destroying the PCI host bridge PCI IO resources retrieved through firmware
when the pci_remap_iospace() function call fails, therefore preventing the
kernel from adding the respective PCI IO resource to the list of PCI host
bridge valid resources, fixing the issue.
Fixes: b7e78170efd4 ("PCI: versatile: Add DT-based ARM Versatile PB PCIe host driver")
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Rob Herring <robh@kernel.org>
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On ARM/ARM64 architectures, PCI IO ports are emulated through memory mapped
IO, by reserving a chunk of virtual address space starting at PCI_IOBASE
and by mapping the PCI host bridges memory address space driving PCI IO
cycles to it.
PCI host bridge drivers that enable downstream PCI IO cycles map the host
bridge memory address responding to PCI IO cycles to the fixed virtual
address space through the pci_remap_iospace() API.
This means that if the pci_remap_iospace() function fails, the
corresponding host bridge PCI IO resource must be considered invalid, in
that there is no way for the kernel to actually drive PCI IO transactions
if the memory addresses responding to PCI IO cycles cannot be mapped into
the CPU virtual address space.
The PCI designware host bridge driver does not remove the PCI IO resource
from the host bridge resource windows if the pci_remap_iospace() call
fails; this is an actual bug in that the PCI host bridge would consider the
PCI IO resource valid (and possibly assign it to downstream devices) even
if the kernel was not able to map the PCI host bridge memory address
driving IO cycle to the CPU virtual address space (ie pci_remap_iospace()
failures).
Fix the PCI host bridge driver pci_remap_iospace() failure path, by
destroying the PCI host bridge PCI IO resources retrieved through firmware
when the pci_remap_iospace() function call fails, therefore preventing the
kernel from adding the respective PCI IO resource to the list of PCI host
bridge valid resources, fixing the issue.
Fixes: cbce7900598c ("PCI: designware: Make driver arch-agnostic")
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Jingoo Han <jingoohan1@gmail.com>
CC: Pratyush Anand <pratyush.anand@gmail.com>
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On ARM/ARM64 architectures, PCI IO ports are emulated through memory mapped
IO, by reserving a chunk of virtual address space starting at PCI_IOBASE
and by mapping the PCI host bridge's memory address space driving PCI IO
cycles to it.
PCI host bridge drivers that enable downstream PCI IO cycles map the host
bridge memory address responding to PCI IO cycles to the fixed virtual
address space through the pci_remap_iospace() API.
This means that if the pci_remap_iospace() function fails, the
corresponding host bridge PCI IO resource must be considered invalid, in
that there is no way for the kernel to actually drive PCI IO transactions
if the memory addresses responding to PCI IO cycles cannot be mapped into
the CPU virtual address space.
The PCI aardvark host bridge driver does not remove the PCI IO resource
from the host bridge resource windows if the pci_remap_iospace() call
fails; this is an actual bug in that the PCI host bridge would consider the
PCI IO resource valid (and possibly assign it to downstream devices) even
if the kernel was not able to map the PCI host bridge memory address
driving IO cycle to the CPU virtual address space (ie pci_remap_iospace()
failures).
Fix the PCI host bridge driver pci_remap_iospace() failure path, by
destroying the PCI host bridge PCI IO resources retrieved through firmware
when the pci_remap_iospace() function call fails, therefore preventing the
kernel from adding the respective PCI IO resource to the list of PCI host
bridge valid resources, fixing the issue.
Fixes: 8c39d710363c ("PCI: aardvark: Add Aardvark PCI host controller driver")
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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* pci/aer:
PCI/AER: Fix aer_probe() kernel-doc comment
PCI/AER: Cache capability position
PCI/AER: Avoid memory allocation in interrupt handling path
ACPI / APEI: Send correct severity to calculate AER severity
PCI/AER: Remove duplicate AER severity translation
PCI/AER: Remove aerdriver.forceload kernel parameter
PCI/AER: Remove aerdriver.nosourceid kernel parameter
x86/PCI: VMD: Add quirk for AER to ignore source ID
PCI/AER: Add bus flag to skip source ID matching
Conflicts:
drivers/pci/probe.c
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0516c8bcd252 ("PCI: PCIe portdrv: Simplily probe callback of service
drivers") removed the "id" argument of aer_probe() but neglected to remove
the kernel-doc comment. Update the comment.
[bhelgaas: changelog]
Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Save the position of the error reporting capability so it doesn't need to
be rediscovered during error handling.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Lukas Wunner <lukas@wunner.de>
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When handling AER events, we previously allocated a struct aer_err_info,
processed the error, and freed the struct. But aer_isr_one_error() is
serialized by rpc_mutex, so we never need more than one copy of the struct,
and the struct is only about 70 bytes, so we're not saving much by
allocating it dynamically.
Embed a struct aer_err_info directly in struct aer_rpc, which is allocated
at probe-time by aer_probe().
[bhelgaas: changelog]
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Currently the AER severity is being translated twice in the code flow for
PCIe errors. It is first translated in ghes_do_proc() before calling into
the AER driver. Then it is translated again when the AER driver calls
cper_print_aer(). This causes the severity that is used in
cper_print_aer() to be incorrect.
Remove the second translation that is in cper_print_aer() since this
function is already receiving the correct AER severity.
Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
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Per the PCI Firmware spec, r3.0, sec 4.5.1, on ACPI systems, the OS must
not use AER unless _OSC is present and _OSC grants AER control to the OS.
The aerdriver.forceload kernel parameter was a way to enable Linux AER
support on ACPI systems that lack _OSC or fail to grant control the the OS.
Enabling Linux AER support when the firmware doesn't want us to is a recipe
for problems, e.g., the firmware might be handling AER itself.
Remove the aerdriver.forceload kernel parameter and related supporting
code.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The aerdriver.nosourceid kernel parameter was intended for working around
broken chipsets don't supply the source ID for AER events. We recently
added PCI_BUS_FLAGS_NO_AERSID, which can be set by quirks for the same
purpose.
Remove the aerdriver.nosourceid kernel parameter. For anything other than
debugging, asking users to find and use kernel parameters is a poor user
experience. Instead, we should add PCI_BUS_FLAGS_NO_AERSID quirks for any
hardware that needs it.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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VMD root ports change all source ids to the VMD device ID. To find the
sender of the AER notification, we need to scan all child devices for the
AER sender, rather than relying on the source ID from the message.
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Allow root port buses to choose to skip source id matching when finding the
faulting device. Certain root port devices may return an incorrect source
ID and recommend to scan child device registers for AER notifications.
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/ptm:
PCI: Add PTM clock granularity information
PCI: Add pci_enable_ptm() for drivers to enable PTM on endpoints
PCI: Add Precision Time Measurement (PTM) support
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The PTM Control register (PCIe r3.1, sec 7.32.3) contains an Effective
Granularity field:
This provides information relating to the expected accuracy of the PTM
clock, but does not otherwise affect the PTM mechanism.
Set the Effective Granularity based on the PTM Root and any intervening PTM
Time Sources.
This does not set Effective Granularity for Root Complex Integrated
Endpoints because I don't know how to figure out clock granularity for
them. The spec says:
... system software must set [Effective Granularity] to the value
reported in the Local Clock Granularity field by the associated PTM
Time Source.
but I don't know how to identify the associated PTM Time Source. Normally
it's the upstream bridge, but an integrated endpoint has no upstream
bridge.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Add an pci_enable_ptm() interface so drivers can enable PTM.
The PCI core enables PTM on PTM Roots and switches automatically, but we
don't enable PTM on endpoints unless a driver requests it.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Add Precision Time Measurement (PTM) support (see PCIe r3.1, sec 6.22).
Enable PTM on PTM Root devices and switch ports. This does not enable PTM
on endpoints.
There currently are no PTM-capable devices on the market, but it is
expected to be supported by the Intel Apollo Lake platform.
[bhelgaas: complete rework]
Signed-off-by: Jonathan Yong <jonathan.yong@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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This code is not being built as a module by anyone:
obj-$(CONFIG_HOTPLUG_PCI_PCIE) += pciehp.o
pciehp-objs := pciehp_core.o \
drivers/pci/pcie/Kconfig:config HOTPLUG_PCI_PCIE
drivers/pci/pcie/Kconfig: bool "PCI Express Hotplug driver"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Note that for non-modular code, module_init() translates to
device_initcall(). One could argue that we should use subsys_initcall()
here, but for now we stick with runtime equivalence.
We delete module.h but we keep the moduleparam.h include, since we are
keeping the module_param() that the file has as-is for now.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Kristen Carlson Accardi <kristen@linux.intel.com>
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This code is not being built as a module by anyone:
obj-$(CONFIG_HOTPLUG_PCI) += pci_hotplug.o
[...]
pci_hotplug-objs := pci_hotplug_core.o
drivers/pci/hotplug/Kconfig:menuconfig HOTPLUG_PCI
drivers/pci/hotplug/Kconfig: bool "Support for PCI Hotplug"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Remove orphaned exit function in cpci_hotplug_core.c.
Note that for non-modular code, module_init() translates to
device_initcall(). One could argue that we should use subsys_initcall()
here, but for now we stick with runtime equivalence.
We would delete module.h and just keep the moduleparam.h include (since the
file does use module_param), but there is a try_module_get and module_put
pairing that prevents us from doing that.
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Scott Murray <scott@spiteful.org>
CC: Kristen Carlson Accardi <kristen@linux.intel.com>
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This code is not being built as a module by anyone:
drivers/pci/host/Kconfig:config PCIE_XILINX_NWL
drivers/pci/host/Kconfig: bool "NWL PCIe Core"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Explicitly disallow driver unbind, since that doesn't have a sensible use
case anyway, and it allows us to drop the ".remove" code for non-modular
drivers. Delete several functions only used by the remove function.
Note that for non-modular code, builtin_platform_driver() uses the same
init level priority as module_platform_driver(), so this doesn't change
init ordering.
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Michal Simek <michal.simek@xilinx.com>
CC: "Sören Brinkmann" <soren.brinkmann@xilinx.com>
CC: Marc Zyngier <marc.zyngier@arm.com>
CC: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>
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This code is not being built as a module by anyone:
drivers/pci/host/Kconfig:config PCIE_XILINX
drivers/pci/host/Kconfig: bool "Xilinx AXI PCIe host bridge support"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Note that for non-modular code, builtin_platform_driver() uses the same
init level priority as module_platform_driver(), so this doesn't change
init ordering.
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Michal Simek <michal.simek@xilinx.com>
CC: "Sören Brinkmann" <soren.brinkmann@xilinx.com>
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This code is not being built as a module by anyone:
drivers/pci/host/Kconfig:config PCIE_QCOM
drivers/pci/host/Kconfig: bool "Qualcomm PCIe controller"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Note that for non-modular code, MODULE_DEVICE_TABLE is a no-op and
builtin_platform_driver() uses the same init level priority as
module_platform_driver(), so this doesn't change init ordering.
Explicitly disallow driver unbind, since that doesn't have a sensible use
case anyway, and it allows us to drop the ".remove" code for non-modular
drivers.
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Stanimir Varbanov <svarbanov@mm-sol.com>
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This code is not being built as a module by anyone:
drivers/pci/host/Kconfig:config PCI_DRA7XX
drivers/pci/host/Kconfig: bool "TI DRA7xx PCIe controller"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Note that for non-modular code, MODULE_DEVICE_TABLE is a no-op and
builtin_platform_driver_probe() uses the same init level priority as
module_platform_driver_probe(), so this doesn't change init ordering.
Explicitly disallow driver unbind, since that doesn't have a sensible use
case anyway, and it allows us to drop the ".remove" code for non-modular
drivers.
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Kishon Vijay Abraham I <kishon@ti.com>
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This code is not being built as a module by anyone:
obj-$(CONFIG_PCIEAER) += aerdriver.o
aerdriver-objs := aerdrv_errprint.o aerdrv_core.o aerdrv.o
drivers/pci/pcie/aer/Kconfig:config PCIEAER
drivers/pci/pcie/aer/Kconfig: bool "Root Port Advanced Error Reporting support"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Note that for non-modular code, module_init() translates to
device_initcall().
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Tom Long Nguyen <tom.l.nguyen@intel.com>
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This code is not being built as a module by anyone:
config PCIE_PME
def_bool y
depends on PCIEPORTBUS && PM
Remove traces of modularity so that when reading the driver there is no
doubt it is builtin-only.
Also delete the .remove function, since that doesn't seem to have a
sensible use case. With "normal" endpoint drivers, we have in the past set
the suppress_bind_attrs bit to make it clear that the use of ".remove" in a
builtin driver was deleted, but here for PCI, it seems overkill to jump
through the pcie_port_service_driver and into the struct device_driver in
order to finally try and do something similar with the bind setting.
Note that for non-modular code, module_init() translates to
device_initcall().
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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This code is not being built as a module by anyone:
drivers/pci/pcie/Kconfig:config PCIE_DPC
drivers/pci/pcie/Kconfig: bool "PCIe Downstream Port Containment support"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Note that for non-modular code, module_init() translates to
device_initcall().
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Keith Busch <keith.busch@intel.com>
CC: Mika Westerberg <mika.westerberg@linux.intel.com>
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This code is not being built as a module by anyone:
drivers/pci/host/Kconfig:config PCI_HOST_COMMON
drivers/pci/host/Kconfig: bool
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Will Deacon <will.deacon@arm.com>
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This code is not being built as a module by anyone:
drivers/pci/host/Kconfig:config PCI_EXYNOS
drivers/pci/host/Kconfig: bool "Samsung Exynos PCIe controller"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Note that for non-modular code, MODULE_DEVICE_TABLE is a no-op.
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
CC: Jingoo Han <jingoohan1@gmail.com>
CC: Kukjin Kim <kgene@kernel.org>
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This code is not being built as a module by anyone:
drivers/pci/host/Kconfig:config PCIE_DW
drivers/pci/host/Kconfig: bool
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Jingoo Han <jingoohan1@gmail.com>
CC: Pratyush Anand <pratyush.anand@gmail.com>
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This code is not being built as a module by anyone:
drivers/pci/host/Kconfig:config PCIE_SPEAR13XX
drivers/pci/host/Kconfig: bool "STMicroelectronics SPEAr PCIe controller"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Note that for non-modular code, MODULE_DEVICE_TABLE is a no-op and
module_init() translates to device_initcall().
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Pratyush Anand <pratyush.anand@gmail.com>
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This code is not being built as a module by anyone:
pcieportdrv-y := portdrv_core.o portdrv_pci.o portdrv_bus.o
obj-$(CONFIG_PCIEPORTBUS) += pcieportdrv.o
drivers/pci/pcie/Kconfig:config PCIEPORTBUS
drivers/pci/pcie/Kconfig: bool "PCI Express Port Bus support"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Note that for non-modular code, MODULE_DEVICE_TABLE is a no-op and
module_init() translates to device_initcall().
[bhelgaas: changelog, remove unused DRIVER_* macros]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Tom Long Nguyen <tom.l.nguyen@intel.com>
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This code is not being built as a module by anyone:
drivers/pci/host/Kconfig:config PCI_IMX6
drivers/pci/host/Kconfig: bool "Freescale i.MX6 PCIe controller"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Note that for non-modular code, MODULE_DEVICE_TABLE is a no-op and
module_init() translates to device_initcall().
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Richard Zhu <Richard.Zhu@freescale.com>
CC: Lucas Stach <l.stach@pengutronix.de>
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This code is not being built as a module by anyone:
drivers/pci/host/Kconfig:config PCIE_ALTERA
drivers/pci/host/Kconfig: bool "Altera PCIe controller"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
Note that for non-modular code, MODULE_DEVICE_TABLE is a no-op and
module_init() translates to device_initcall().
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Ley Foon Tan <lftan@altera.com>
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This code is not being built as a module by anyone:
drivers/pci/host/Kconfig:config PCIE_ALTERA_MSI
drivers/pci/host/Kconfig: bool "Altera PCIe MSI feature"
Remove uses of MODULE_DESCRIPTION(), MODULE_AUTHOR(), MODULE_LICENSE(),
etc., so that when reading the driver there is no doubt it is builtin-only.
The information is preserved in comments at the top of the file.
[bhelgaas: changelog]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Ley Foon Tan <lftan@altera.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"The irq departement proudly presents:
- A rework of the core infrastructure to optimally spread interrupt
for multiqueue devices. The first version was a bit naive and
failed to take thread siblings and other details into account.
Developed in cooperation with Christoph and Keith.
- Proper delegation of softirqs to ksoftirqd, so if ksoftirqd is
active then no further softirq processsing on interrupt return
happens. Otherwise we try to delegate and still run another batch
of network packets in the irq return path, which then tries to
delegate to ksoftirqd .....
- A proper machine parseable sysfs based alternative for
/proc/interrupts.
- ACPI support for the GICV3-ITS and ARM interrupt remapping
- Two new irq chips from the ARM SoC zoo: STM32-EXTI and MVEBU-PIC
- A new irq chip for the JCore (SuperH)
- The usual pile of small fixlets in core and irqchip drivers"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
softirq: Let ksoftirqd do its job
genirq: Make function __irq_do_set_handler() static
ARM/dts: Add EXTI controller node to stm32f429
ARM/STM32: Select external interrupts controller
drivers/irqchip: Add STM32 external interrupts support
Documentation/dt-bindings: Document STM32 EXTI controller bindings
irqchip/mips-gic: Use for_each_set_bit to iterate over local IRQs
pci/msi: Retrieve affinity for a vector
genirq/affinity: Remove old irq spread infrastructure
genirq/msi: Switch to new irq spreading infrastructure
genirq/affinity: Provide smarter irq spreading infrastructure
genirq/msi: Add cpumask allocation to alloc_msi_entry
genirq: Expose interrupt information through sysfs
irqchip/gicv3-its: Use MADT ITS subtable to do PCI/MSI domain initialization
irqchip/gicv3-its: Factor out PCI-MSI part that might be reused for ACPI
irqchip/gicv3-its: Probe ITS in the ACPI way
irqchip/gicv3-its: Refactor ITS DT init code to prepare for ACPI
irqchip/gicv3-its: Cleanup for ITS domain initialization
PCI/MSI: Setup MSI domain on a per-device basis using IORT ACPI table
ACPI: Add new IORT functions to support MSI domain handling
...
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Merge urgent fixes so pending patches for 4.9 can be applied.
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Add the new irq spreading infrastructure.
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Add a helper to get the affinity mask for a given PCI irq vector. For MSI or
MSI-X vectors these are stored by the IRQ core, while for legacy interrupts
we will always return cpu_possible_map.
[hch: updated to follow the style of pci_irq_vector()]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: axboe@fb.com
Cc: keith.busch@intel.com
Cc: agordeev@redhat.com
Cc: linux-block@vger.kernel.org
Link: http://lkml.kernel.org/r/1473862739-15032-6-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Switch MSI over to the new spreading code. If a pci device contains a valid
pointer to a cpumask, then this mask is used for spreading otherwise the
online cpu mask is used. This allows a driver to restrict the spread to a
subset of CPUs, e.g. cpus on a particular node.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: axboe@fb.com
Cc: keith.busch@intel.com
Cc: agordeev@redhat.com
Cc: linux-block@vger.kernel.org
Link: http://lkml.kernel.org/r/1473862739-15032-4-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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For irq spreading want to store affinity masks in the msi_entry. Add the
infrastructure for it.
We allocate an array of cpumasks with an array size of the number of used
vectors in the entry, so we can hand in the information per linux interrupt
later.
As we hand in the number of used vectors, we assign them right
away. Convert all the call sites.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: axboe@fb.com
Cc: keith.busch@intel.com
Cc: agordeev@redhat.com
Cc: linux-block@vger.kernel.org
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/1473862739-15032-2-git-send-email-hch@lst.de
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It is possible to provide information about which MSI controller to
use on a per-device basis for DT. This patch supply this with ACPI support.
Currently, IORT is the only one ACPI table which can provide such mapping.
In order to plug IORT into MSI infrastructure we are adding ACPI
equivalents for finding PCI device domain and its RID translation
(pci_msi_domain_get_msi_rid and pci_msi_domain_get_msi_rid calls).
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform changes from Ingo Molnar:
"The main changes in this cycle were:
- SGI UV updates (Andrew Banman)
- Intel MID updates (Andy Shevchenko)
- Initial Mellanox systems platform (Vadim Pasternak)"
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/platform/mellanox: Fix return value check in mlxplat_init()
x86/platform/mellanox: Introduce support for Mellanox systems platform
x86/platform/uv/BAU: Add UV4-specific functions
x86/platform/uv/BAU: Fix payload queue setup on UV4 hardware
x86/platform/uv/BAU: Disable software timeout on UV4 hardware
x86/platform/uv/BAU: Populate ->uvhub_version with UV4 version information
x86/platform/uv/BAU: Use generic function pointers
x86/platform/uv/BAU: Add generic function pointers
x86/platform/uv/BAU: Convert uv_physnodeaddr() use to uv_gpa_to_offset()
x86/platform/uv/BAU: Clean up pq_init()
x86/platform/uv/BAU: Clean up and update printks
x86/platform/uv/BAU: Clean up vertical alignment
x86/platform/intel-mid: Keep SRAM powered on at boot
x86/platform/intel-mid: Add Intel Penwell to ID table
x86/cpu: Rename Merrifield2 to Moorefield
x86/platform/intel-mid: Implement power off sequence
x86/platform/intel-mid: Enable SD card detection on Merrifield
x86/platform/intel-mid: Enable WiFi on Intel Edison
x86/platform/intel-mid: Run PWRMU command immediately
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Commit:
ca22312dc840 ("x86/platform/intel-mid: Extend PWRMU to support Penwell")
... enabled the PWRMU driver on platforms based on Intel Penwell, but
unfortunately this is not enough.
Add Intel Penwell ID to pci-mid.c driver as well. To avoid confusion in the
future add a comment to both drivers.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: ca22312dc840 ("x86/platform/intel-mid: Extend PWRMU to support Penwell")
Link: http://lkml.kernel.org/r/20160908103232.137587-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merrifield2 is actually Moorefield.
Rename it accordingly and drop tail digit from Merrifield1.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20160906184254.94440-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 apic updates from Ingo Molnar:
"The main changes are:
- Persistent CPU/node numbering across CPU hotplug/unplug events.
This is a pretty involved series of changes that first fetches all
the information during bootup and then uses it for the various
hotplug/unplug methods. (Gu Zheng, Dou Liyang)
- IO-APIC hot-add/remove fixes and enhancements. (Rui Wang)
- ... various fixes, cleanups and enhancements"
* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
x86/apic: Fix silent & fatal merge conflict in __generic_processor_info()
acpi: Fix broken error check in map_processor()
acpi: Validate processor id when mapping the processor
acpi: Provide mechanism to validate processors in the ACPI tables
x86/acpi: Set persistent cpuid <-> nodeid mapping when booting
x86/acpi: Enable MADT APIs to return disabled apicids
x86/acpi: Introduce persistent storage for cpuid <-> apicid mapping
x86/acpi: Enable acpi to register all possible cpus at boot time
x86/numa: Online memory-less nodes at boot time
x86/apic: Get rid of apic_version[] array
x86/apic: Order irq_enter/exit() calls correctly vs. ack_APIC_irq()
x86/ioapic: Ignore root bridges without a companion ACPI device
x86/apic: Update comment about disabling processor focus
x86/smpboot: Check APIC ID before setting up default routing
x86/ioapic: Fix IOAPIC failing to request resource
x86/ioapic: Fix lost IOAPIC resource after hot-removal and hotadd
x86/ioapic: Fix setup_res() failing to get resource
x86/ioapic: Support hot-removal of IOAPICs present during boot
x86/ioapic: Change prototype of acpi_ioapic_add()
x86/apic, ACPI: Fix incorrect assignment when handling apic/x2apic entries
...
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Bring in the upstream modifications so we can fixup the silent merge
conflict which is introduced by this merge.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Some PCI root bridges don't have a corresponding ACPI device.
This can be the case on some old platforms. Don't call acpi_ioapic_add()
on these bridges because they can't support ioapic hotplug.
Reported-and-tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Reviewed-by: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bhelgaas@google.com
Cc: helgaas@kernel.org
Cc: linux-acpi@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: rjw@rjwysocki.net
Cc: tony.luck@intel.com
Link: http://lkml.kernel.org/r/1473522046-31329-1-git-send-email-rui.y.wang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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IOAPICs present during system boot aren't added to ioapic_list,
thus are unable to be hot-removed. Fix it by calling
acpi_ioapic_add() during root bus enumeration.
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: helgaas@kernel.org
Cc: linux-acpi@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: rjw@rjwysocki.net
Cc: tony.luck@intel.com
Link: http://lkml.kernel.org/r/1471420837-31003-3-git-send-email-rui.y.wang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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* acpi-sysfs:
ACPI / sysfs: Update sysfs signature handling code
ACPI / sysfs: Fix an issue for LoadTable opcode
ACPI / sysfs: Use new GPE masking mechanism in GPE interface
* acpi-pci:
ACPI / platform: Pay attention to parent device's resources
PCI: Add pci_find_resource()
ACPI / PCI: fix GIC irq model default PCI IRQ polarity
* acpi-tables:
ACPI / tables: Remove duplicated include from tables.c
ACPI / tables: do not report the number of entries ignored by acpi_parse_entries()
ACPI / tables: fix acpi_parse_entries_array() so it traverses all subtables
ACPI / tables: fix incorrect counts returned by acpi_parse_entries_array()
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Add a new helper function pci_find_resource() that can be used to find out
whether a given resource (for example from a child device) is contained
within given PCI device's standard resources.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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