5132 Commits

Author SHA1 Message Date
Lorenzo Pieralisi
db047f8a93 PCI: aardvark: Fix pci_remap_iospace() failure path
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>
2016-09-06 12:37:55 -05:00
Dexuan Cui
a5b45b7b95 PCI: hv: Handle hv_pci_generic_compl() error case
'completion_status' is used in some places, e.g.,
hv_pci_protocol_negotiation(), so we should make sure it's initialized in
error case too, though the error is unlikely here.

[bhelgaas: fix changelog typo and nearby whitespace]
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: KY Srinivasan <kys@microsoft.com>
CC: Jake Oshins <jakeo@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>
2016-09-06 12:23:30 -05:00
Dexuan Cui
665e2245eb PCI: hv: Handle vmbus_sendpacket() failure in hv_compose_msi_msg()
Handle vmbus_sendpacket() failure in hv_compose_msi_msg().

I happened to find this when reading the code.  I didn't get a real issue
however.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: KY Srinivasan <kys@microsoft.com>
CC: Jake Oshins <jakeo@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>
2016-09-06 12:21:57 -05:00
Dexuan Cui
617ceb62ea PCI: hv: Remove the unused 'wrk' in struct hv_pcibus_device
Remove the unused 'wrk' member in struct hv_pcibus_device.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: KY Srinivasan <kys@microsoft.com>
CC: Jake Oshins <jakeo@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>
2016-09-06 12:21:23 -05:00
Dexuan Cui
7d0f8eec97 PCI: hv: Use pci_function_description[0] in struct definitions
The 2 structs can use a zero-length array here, because dynamic memory of
the correct size is allocated in hv_pci_devices_present() and we don't need
this extra element.

No functional change.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: KY Srinivasan <kys@microsoft.com>
CC: Jake Oshins <jakeo@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>
2016-09-06 12:20:44 -05:00
Dexuan Cui
0c6045d8c0 PCI: hv: Use zero-length array in struct pci_packet
Use zero-length array in struct pci_packet and rename struct pci_message's
field "message_type" to "type".  This makes the code more readable.

No functionality change.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: KY Srinivasan <kys@microsoft.com>
CC: Jake Oshins <jakeo@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>
2016-09-06 12:15:46 -05:00
Joao Pinto
f8430eae9f PCI/MSI: Enable PCI_MSI_IRQ_DOMAIN support for ARC
Add ARC as an arch that supports PCI_MSI_IRQ_DOMAIN and add generation of
msi.h in the ARC arch.

Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
2016-09-06 10:53:32 -05:00
Linus Torvalds
593ee4edc5 Char/Misc driver fixes for 4.8-rc5
Here are a number of small driver fixes for 4.8-rc5.
 
 The largest thing here is deleting an obsolete driver,
 drivers/misc/bh1780gli.c, as the functionality of it was replaced by an
 iio driver a while ago.  The other fixes are things that have been
 reported, or reverts of broken stuff (the binder change).  All of these
 changes have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are a number of small driver fixes for 4.8-rc5.

  The largest thing here is deleting an obsolete driver,
  drivers/misc/bh1780gli.c, as the functionality of it was replaced by
  an iio driver a while ago.

  The other fixes are things that have been reported, or reverts of
  broken stuff (the binder change).  All of these changes have been in
  linux-next for a while with no reported issues"

* tag 'char-misc-4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  thunderbolt: Don't declare Falcon Ridge unsupported
  thunderbolt: Add support for INTEL_FALCON_RIDGE_2C controller.
  thunderbolt: Fix resume quirk for Falcon Ridge 4C.
  lkdtm: Mark lkdtm_rodata_do_nothing() notrace
  mei: me: disable driver on SPT SPS firmware
  Revert "android: binder: fix dangling pointer comparison"
  drivers/iio/light/Kconfig: SENSORS_BH1780 cleanup
  android: binder: fix dangling pointer comparison
  misc: delete bh1780 driver
2016-09-03 11:38:43 -07:00
Shawn Lin
e77f847df5 PCI: rockchip: Add Rockchip PCIe controller support
Add support for the Rockchip PCIe controller found on RK3399 SoC platform.

[bhelgaas: fold in Brian's rockchip_pcie_client_irq_handler() OR fix, other
fixes and cleanups from Guenter Roeck <linux@roeck-us.net> and me,
uninitialized variable fix from Arnd Bergmann <arnd@arndb.de>]
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
2016-09-03 11:41:09 -05:00
Bjorn Helgaas
9e18ad98ca Merge branch 'pci/ptm' into next
* 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
2016-09-01 09:04:55 -05:00
Ananth Jasty
21b5b8eebb PCI: quirk fixup for cavium invalid sriov link value.
Cavium cn88xx hardware presents an incorrect SR-IOV Function
Dependency Link, add a fixup quirk for the affected devices.

Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: Ananth Jasty <Ananth.Jasty@cavium.com>
Signed-off-by: Omer Khaliq <okhaliq@caviumnetworks.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-08-31 23:00:38 +08:00
Xavier Gnata
82a6a81c2a thunderbolt: Add support for INTEL_FALCON_RIDGE_2C controller.
From: Xavier Gnata <xavier.gnata@gmail.com>

Add support to INTEL_FALCON_RIDGE_2C controller and corresponding quirk
to support suspend/resume.
Tested against 4.7 master on a MacBook Air 11" 2015.

Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31 13:25:02 +02:00
Andreas Noever
25eb7e5c74 thunderbolt: Fix resume quirk for Falcon Ridge 4C.
The quirk 'quirk_apple_wait_for_thunderbolt' did not fire on Falcon
Ridge 4C controllers with subdevice/subvendor set to zero. This lead
to lost pci devices on system resume.

Older thunderbolt controllers (pre Falcon Ridge) used the same device id
for bridges and for the controller. On Apple hardware the subvendor- &
subdevice-ids were set for the controller, but not for bridges. So that
is what was used to differentiate between the two. Starting with Falcon
Ridge bridges and controllers received different device ids.
Additionally on some MacBookPro models (but not all) the
subvendor/subdevice was zeroed.

Starting with a42fb351c (thunderbolt: Allow loading of module on recent
Apple MacBooks with thunderbolt 2 controller) the thunderbolt driver
binds to all Falcon Ridge 4C controllers (irregardless of
subvendor/subdevice). The corresponding quirk was not updated.

This commit changes the quirk to check the device class instead of its
subvendor-/subdeviceids. This works for all generations of Thunderbolt
controllers.

Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-31 13:25:02 +02:00
Linus Torvalds
2a90309e06 powerpc fixes for 4.8 #4
Andrew Donnellan (1):
       cxl: use pcibios_free_controller_deferred() when removing vPHBs
 
 Andrzej Hajda (1):
       powerpc/powernv/pci: fix iterator signedness
 
 Boqun Feng (1):
       powerpc, hotplug: Avoid to touch non-existent cpumasks.
 
 Christophe Leroy (1):
       powerpc: sysdev: cpm: fix gpio save_regs functions
 
 Cyril Bur (1):
       powerpc: signals: Discard transaction state from signal frames
 
 Guenter Roeck (1):
       powerpc: cputhreads: Add missing include file
 
 Markus Elfring (3):
       drivers/macintosh: Delete owner assignment
       powerpc/512x: Delete unnecessary assignment for the field "owner"
       powerpc: mpc8349emitx: Delete unnecessary assignment for the field "owner"
 
 Mauricio Faria de Oliveira (1):
       powerpc/pseries: use pci_host_bridge.release_fn() to kfree(phb)
 
 Michael Ellerman (1):
       powerpc/prom: Fix sub-processor option passed to ibm, client-architecture-support
 
 Mukesh Ojha (1):
       powerpc/powernv : Drop reference added by kset_find_obj()
 
 Nicholas Piggin (3):
       powerpc/pseries: PACA save area fix for general exception vs MCE
       powerpc/pseries: PACA save area fix for MCE vs MCE
       powerpc/tm: do not use r13 for tabort_syscall
 
 Paolo Bonzini (1):
       powerpc: move hmi.c to arch/powerpc/kvm/
 
 Paul Gortmaker (1):
       powerpc: migrate exception table users off module.h and onto extable.h
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Merge tag 'powerpc-4.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Ben Herrenschmidt:
 "This was meant to be sent early last week, but I has a change pending
  on one of the fixes and other things made me forget all about.  Ugh.

  We have some misc fixes for powerpc 4.8.  Some trivial bits and some
  regressions, and a trivial cleanup or two that I saw no point in
  letting rot in patchwork"

* tag 'powerpc-4.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: signals: Discard transaction state from signal frames
  powerpc/powernv : Drop reference added by kset_find_obj()
  powerpc/tm: do not use r13 for tabort_syscall
  powerpc: move hmi.c to arch/powerpc/kvm/
  powerpc: sysdev: cpm: fix gpio save_regs functions
  powerpc/pseries: PACA save area fix for MCE vs MCE
  powerpc/pseries: PACA save area fix for general exception vs MCE
  powerpc/prom: Fix sub-processor option passed to ibm, client-architecture-support
  powerpc, hotplug: Avoid to touch non-existent cpumasks.
  powerpc: migrate exception table users off module.h and onto extable.h
  powerpc/powernv/pci: fix iterator signedness
  powerpc/pseries: use pci_host_bridge.release_fn() to kfree(phb)
  cxl: use pcibios_free_controller_deferred() when removing vPHBs
  powerpc: mpc8349emitx: Delete unnecessary assignment for the field "owner"
  powerpc/512x: Delete unnecessary assignment for the field "owner"
  drivers/macintosh: Delete owner assignment
  powerpc: cputhreads: Add missing include file
2016-08-29 12:12:15 -07:00
Linus Torvalds
219c04cea3 PCI updates for v4.8:
Resource management
     Update "pci=resource_alignment" documentation (Mathias Koehrer)
 
   MSI
     Use positive flags in pci_alloc_irq_vectors() (Christoph Hellwig)
     Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors() (Christoph Hellwig)
 
   Intel VMD host bridge driver
     Fix infinite loop executing irq's (Keith Busch)
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Merge tag 'pci-v4.8-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "Resource management:
   - Update "pci=resource_alignment" documentation (Mathias Koehrer)

  MSI:
   - Use positive flags in pci_alloc_irq_vectors() (Christoph Hellwig)
   - Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors() (Christoph Hellwig)

  Intel VMD host bridge driver:
   - Fix infinite loop executing irq's (Keith Busch)"

* tag 'pci-v4.8-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  x86/PCI: VMD: Fix infinite loop executing irq's
  PCI: Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors()
  PCI: Use positive flags in pci_alloc_irq_vectors()
  PCI: Update "pci=resource_alignment" documentation
2016-08-26 18:26:07 -07:00
Ley Foon Tan
31fc0ad47e PCI: altera: Rework config accessors for use without a struct pci_bus
Rework configs accessors so a future patch can use them in _probe() with
struct altera_pcie instead of struct pci_bus.

Signed-off-by: Ley Foon Tan <lftan@altera.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-08-26 14:18:59 -05:00
Bjorn Helgaas
8b2ec318ee PCI: Add PTM clock granularity information
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>
2016-08-25 08:32:34 -05:00
Paul Gortmaker
70626d8838 PCI: pciehp: Make explicitly non-modular
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>
2016-08-24 17:28:56 -05:00
Paul Gortmaker
57b51b9adb PCI: hotplug: Make core explicitly non-modular
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>
2016-08-24 17:20:14 -05:00
Paul Gortmaker
ff187e777c PCI: xilinx-nwl: Make explicitly non-modular
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>
2016-08-24 17:18:17 -05:00
Paul Gortmaker
da4eafcae3 PCI: xilinx: Make explicitly non-modular
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>
2016-08-24 17:16:32 -05:00
Paul Gortmaker
f9a6660083 PCI: qcom: Make explicitly non-modular
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>
2016-08-24 17:16:19 -05:00
Paul Gortmaker
d29438d644 PCI: dra7xx: Make explicitly non-modular
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>
2016-08-24 17:02:05 -05:00
Paul Gortmaker
8756336c1d PCI/AER: Make explicitly non-modular
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>
2016-08-24 16:59:57 -05:00
Paul Gortmaker
d7def20400 PCI/PME: Make explicitly non-modular
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>
2016-08-24 16:56:12 -05:00
Paul Gortmaker
61612e6dd4 PCI: Make DPC explicitly non-modular
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>
2016-08-24 16:52:24 -05:00
Paul Gortmaker
4068bd192a PCI: generic: Make explicitly non-modular
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>
2016-08-24 14:21:01 -05:00
Wei Yongjun
639c532325 PCI: designware: Remove redundant platform_get_resource() return value check
devm_ioremap_resource() fails gracefully when given a NULL resource
pointer, so we don't need to check separately for failure from
platform_get_resource_byname().  Remove the redundant check.

[bhelgaas: changelog]
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-08-23 16:55:18 -05:00
Dong Bo
68a0bfec72 PCI: designware: Exchange viewport of MEMORYs' and CFGs/IOs'
When we have only two view ports in a DesignWare PCIe platform, iatu0
is used for both CFG and IO accesses.  When CFGs are sent to peripherals
(e.g., lspci), iatu0 frequently switches between CFG and IO.

For such scenarios, a MEMORY might be sent as an IOs by mistake.
Considering the following configurations:

  MEMORY  ->   BASE_ADDR: 0xb4100000, LIMIT: 0xb4100FFF, TYPE=mem
  CFG     ->   BASE_ADDR: 0xb4000000, LIMIT: 0xb4000FFF, TYPE=cfg
  IO      ->   BASE_ADDR: 0xFFFFFFFF, LIMIT: 0xFFFFFFFE, TYPE=io

Suppose PCIe has just completed a CFG access.  To switch back to IO, it
sets the BASE_ADDR to 0xFFFFFFFF, LIMIT 0xFFFFFFFE and TYPE to IO.  When
another CFG comes, the BASE_ADDR is set to 0xb4000000 to switch to CFG.  At
this moment, a MEMORY access shows up, since it matches with iatu0 (due to
0xb4000000 <= MEMORY BASE_ADDR <= MEMORY LIMIT <= 0xFFFFFFF), it is treated
as an IO access by mistake, then sent to perpheral.

This patch fixes the problem by exchanging the assignments of `MEMORYs' and
`CFGs/IOs', which assigning MEMORYs to iatu0, CFGs and IOs to iatu1.

We can still have issues with IO transfer, however memory transfer is used
predominantly therefore we are just minimizing the risk of failure.
Actually, we can not do much when we have only two viewports.  We can
either not allow the less frequent IO transfers at all, or can live with a
remote possibility of getting it corrupted.

Signed-off-by: Dong Bo <dongbo4@huawei.com>
[pratyush.anand@gmail.com: Modified commit log to capture remote risk]
Signed-off-by: Pratyush Anand <pratyush.anand@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-08-23 16:55:16 -05:00
Paul Gortmaker
caf5548caa PCI: exynos: Make explicitly non-modular
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>
2016-08-23 15:44:07 -05:00
Paul Gortmaker
e41faf0779 PCI: designware: Make explicitly non-modular
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>
2016-08-23 15:43:59 -05:00
Paul Gortmaker
56540c77c5 PCI: spear: Make explicitly non-modular
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>
2016-08-23 15:43:51 -05:00
Paul Gortmaker
a7dadf45ae PCI: portdrv: Make explicitly non-modular
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>
2016-08-23 15:34:23 -05:00
Paul Gortmaker
f90d8e84c3 PCI: imx6: Make explicitly non-modular
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>
2016-08-23 15:34:15 -05:00
Paul Gortmaker
bb9b54ca37 PCI: altera: Make explicitly non-modular
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>
2016-08-23 15:34:08 -05:00
Paul Gortmaker
18224b3a73 PCI: altera: Make MSI explicitly non-modular
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>
2016-08-23 15:13:27 -05:00
Wei Yongjun
8b22335afe PCI: aardvark: Remove redundant dev_err call in advk_pcie_probe()
devm_ioremap_resource() emits an error message already, so remove the
dev_err() call in advk_pcie_probe() to avoid redundant error messages.

Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2016-08-22 14:36:50 -05:00
Wei Yongjun
4f1cb01a78 PCI: hv: Use list_move_tail() instead of list_del() + list_add_tail()
Use list_move_tail() instead of list_del() + list_add_tail().  No
functional change intended

Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-08-22 14:35:38 -05:00
Wei Yongjun
8116acce5a PCI: keystone: Propagate request_irq() failure
Previously, if request_irq() failed, ks_add_pcie_port() always returned
zero (success).  Return the request_irq() failure result instead.

[bhelgaas: changelog]
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-By: Murali Karicheri <m-karicheri2@ti.com>
2016-08-22 14:28:42 -05:00
Bjorn Helgaas
51afa3cc2d PCI: rcar: Consolidate register space lookup and ioremap
Move the devm_ioremap_resource() of R-Car register space next to the
of_address_to_resource() that extracts the resource.  No functional change
intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-08-22 14:16:38 -05:00
Pratyush Anand
fe48cb8538 PCI: designware: Keep viewport fixed for IO transaction if num_viewport > 2
Most of the platforms have 3 or more viewports.  For such platforms, We do
not need to share viewports between IO and CFG.  Assign viewport 2 to IO
transactions in such cases.

Tested-by: Dong Bo <dongbo4@huawei.com>
Signed-off-by: Pratyush Anand <pratyush.anand@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
2016-08-22 12:34:43 -05:00
Keith Busch
8b7c8b46f1 PCI: pciehp: Clear attention LED on device add
Clear the LED attention status after a successful device add.  It is
possible the attention LED was on from a previous power fault or link
failure, and a subsequent successful device insert insertion should clear
it.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-08-22 11:57:41 -05:00
Andrew Donnellan
6f38a8b9a4 cxl: use pcibios_free_controller_deferred() when removing vPHBs
When cxl removes a vPHB, it's possible that the pci_controller may be freed
before all references to the devices on the vPHB have been released. This
in turn causes an invalid memory access when the devices are eventually
released, as pcibios_release_device() attempts to call the phb's
release_device hook.

In cxl_pci_vphb_remove(), remove the existing call to
pcibios_free_controller(). Instead, use
pcibios_free_controller_deferred() to free the pci_controller after all
devices have been released. Export pci_set_host_bridge_release() so we can
do this.

Cc: stable@vger.kernel.org
Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2016-08-22 11:09:33 +10:00
Bjorn Helgaas
eec097d431 PCI: Add pci_enable_ptm() for drivers to enable PTM on endpoints
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>
2016-08-18 16:04:57 -05:00
Thierry Reding
c460af94c3 PCI: tegra: Use of_device_get_match_data()
of_device_get_match_data() was added in v4.2 to reduce the the boilerplate
required to get at SoC-specific data.  Use it to simplify the code
slightly.

[bhelgaas: changelog]
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-08-18 15:41:41 -05:00
Thierry Reding
a7fbae2139 PCI: tegra: Remove redundant _data suffix
The struct tegra_pcie_soc_data represents SoC-specific data.  The shorter
name tegra_pcie_soc already describes that accurately enough, so the extra
five characters are redundant.  Also remove the suffix from various
variable names to shorten the code a little.

This also makes this driver more consistent with the naming used in other
drivers that use a similar mechanism to differentiate between various SoC
generations.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-08-18 15:41:06 -05:00
Maik Broemme
8e2e031799 PCI: Mark Atheros AR9580 to avoid bus reset
Similar to the AR93xx and the AR94xx series, the AR95xx also have the same
quirk for the Bus Reset.  It will lead to instant system reset if the
device is assigned via VFIO to a KVM VM.  I've been able reproduce this
behavior with a MikroTik R11e-2HnD.

Fixes: c3e59ee4e766 ("PCI: Mark Atheros AR93xx to avoid bus reset")
Signed-off-by: Maik Broemme <mbroemme@libmpq.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v3.14+
2016-08-18 15:36:30 -05:00
Ley Foon Tan
411dc32d88 PCI: altera: Poll for link training status after retraining the link
Poll for link training status is cleared before poll for link up status.
This can help to get the reliable link up status, especially when PCIe is
in Gen 3 speed.

Signed-off-by: Ley Foon Tan <lftan@altera.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-08-18 15:12:53 -05:00
Christoph Hellwig
5d0bdf2867 PCI: Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors()
ahci currently insists on an explicit call to pci_intx() before falling
back from MSI or MSI-X to legacy IRQs.  As pci_intx() is a no-op if the
command register already contains the right value it seems safe and useful
to add this call to pci_alloc_irq_vectors() so that ahci can just use
pci_alloc_irq_vectors().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-08-18 08:02:40 -05:00
Jisheng Zhang
01c076732e PCI: designware: Check LTSSM training bit before deciding link is up
The link may be up but still in link training.  In this case, we can't
think the link is up and operating correctly.  Teach dw_pcie_link_up() to
be aware of the PCIE_PHY_DEBUG_R1_LINK_IN_TRAINING bit.

Also rewrite PCIE_PHY_DEBUG_R1_LINK_UP definition so that it's consistent
with other macros.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Joao Pinto <jpinto@synopsys.com>
2016-08-18 08:00:44 -05:00