Bjorn Helgaas [Fri, 28 Apr 2017 15:34:00 +0000 (10:34 -0500)]
Merge branch 'pci/iommu' into next
* pci/iommu:
PCI: Add bridge DMA alias quirk for ITE 8893 bridge
Bjorn Helgaas [Fri, 28 Apr 2017 15:33:55 +0000 (10:33 -0500)]
Merge branch 'pci/enumeration' into next
* pci/enumeration:
PCI: Include PCI-to-PCIe bridges as "Downstream Ports"
PCI: Improve __pci_read_base() robustness
PCI: Short-circuit pci_device_is_present() for disconnected devices
PCI/MSI: Skip disabling disconnected devices
PCI: Don't attempt config access to disconnected devices
PCI: Add device disconnected state
PCI: Export PCI device config accessors
Bjorn Helgaas [Fri, 28 Apr 2017 15:33:41 +0000 (10:33 -0500)]
Merge branch 'pci/switchtec' into next
* pci/switchtec:
switchtec: Add IOCTLs to the Switchtec driver
switchtec: Add sysfs attributes to the Switchtec driver
switchtec: Add user interface documentation
MicroSemi Switchtec management interface driver
Conflicts:
drivers/pci/Kconfig
Bjorn Helgaas [Fri, 28 Apr 2017 15:33:15 +0000 (10:33 -0500)]
Merge branch 'pci/host-thunder' into next
* pci/host-thunder:
PCI/ACPI: Add ThunderX pass2.x 2nd node MCFG quirk
PCI/ACPI: Tidy up MCFG quirk whitespace
PCI: Avoid generating invalid ThunderX2 DMA aliases
PCI: Add device flag PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT
PCI: Apply Cavium ACS quirk only to CN81xx/CN83xx/CN88xx devices
Bjorn Helgaas [Fri, 28 Apr 2017 15:33:10 +0000 (10:33 -0500)]
Merge branch 'pci/host-rockchip' into next
* pci/host-rockchip:
PCI: rockchip: Modularize
PCI: Export pci_remap_iospace() and pci_unmap_iospace()
PCI: rockchip: Add remove() support
PCI: rockchip: Set PCI_EXP_LNKSTA_SLC in the Root Port
PCI: rockchip: Advertise 128-byte Read Completion Boundary support
PCI: rockchip: Make 'return 0' more obvious in probe()
PCI: rockchip: Unindent rockchip_pcie_set_power_limit()
PCI: rockchip: Handle regulator_get_current_limit() failure correctly
Bjorn Helgaas [Fri, 28 Apr 2017 15:33:05 +0000 (10:33 -0500)]
Merge branch 'pci/host-mvebu' into next
* pci/host-mvebu:
PCI: mvebu: Avoid changing the SCC bit in the Link Status register
Bjorn Helgaas [Fri, 28 Apr 2017 15:33:00 +0000 (10:33 -0500)]
Merge branch 'pci/host-iproc' into next
* pci/host-iproc:
PCI: iproc: Add PCI_DOMAIN dependency to PCI Kconfig
Bjorn Helgaas [Fri, 28 Apr 2017 15:32:54 +0000 (10:32 -0500)]
Merge branch 'pci/host-imx6' into next
* pci/host-imx6:
PCI: imx6: Fix spelling mistake: "contol" -> "control"
PCI: imx6: Do not switch speed if Gen2 is disabled
PCI: imx6: Do not wait for speed change on i.MX7
PCI: imx6: Allow probe deferral by reset GPIO
PCI: imx6: Add code to support i.MX7D
Bjorn Helgaas [Fri, 28 Apr 2017 15:32:50 +0000 (10:32 -0500)]
Merge branch 'pci/host-hv' into next
* pci/host-hv:
PCI: hv: Convert hv_pci_dev.refs from atomic_t to refcount_t
PCI: hv: Allocate interrupt descriptors with GFP_ATOMIC
PCI: hv: Specify CPU_AFFINITY_ALL for MSI affinity when >= 32 CPUs
PCI: hv: Lock PCI bus on device eject
PCI: hv: Properly handle PCI bus remove
Bjorn Helgaas [Fri, 28 Apr 2017 15:32:44 +0000 (10:32 -0500)]
Merge branch 'pci/host-faraday' into next
* pci/host-faraday:
PCI: faraday: Add Faraday Technology FTPCI100 PCI Host Bridge driver
PCI: Add DT bindings for Faraday Technology PCI Host Bridge
Bjorn Helgaas [Fri, 28 Apr 2017 15:32:33 +0000 (10:32 -0500)]
Merge branch 'pci/host-designware' into next
* pci/host-designware:
ARM: DRA7: clockdomain: Change the CLKTRCTRL of CM_PCIE_CLKSTCTRL to SW_WKUP
MAINTAINERS: Add PCI Endpoint maintainer
Documentation: PCI: Add userguide for PCI endpoint test function
tools: PCI: Add sample test script to invoke pcitest
tools: PCI: Add a userspace tool to test PCI endpoint
Documentation: misc-devices: Add Documentation for pci-endpoint-test driver
misc: Add host side PCI driver for PCI test function device
PCI: Add device IDs for DRA74x and DRA72x
dt-bindings: PCI: dra7xx: Add DT bindings to enable unaligned access
PCI: dwc: dra7xx: Workaround for errata id i870
dt-bindings: PCI: dra7xx: Add DT bindings for PCI dra7xx EP mode
PCI: dwc: dra7xx: Add EP mode support
PCI: dwc: dra7xx: Facilitate wrapper and MSI interrupts to be enabled independently
dt-bindings: PCI: Add DT bindings for PCI designware EP mode
PCI: dwc: designware: Add EP mode support
Documentation: PCI: Add binding documentation for pci-test endpoint function
PCI: endpoint: functions: Add an EP function to test PCI
Documentation: PCI: Add specification for the *PCI test* function device
PCI: endpoint: Create configfs entry for EPC device and EPF driver
Documentation: PCI: Guide to use PCI endpoint configfs
PCI: endpoint: Introduce configfs entry for configuring EP functions
Documentation: PCI: Guide to use PCI Endpoint Core Layer
PCI: endpoint: Add EP core layer to enable EP controller and EP functions
PCI: dwc: dra7xx: Push request_irq() call to the bottom of probe
PCI: dwc: designware: Move _unroll configurations to a separate function
PCI: dwc: all: Modify dbi accessors to access data of 4/2/1 bytes
PCI: dwc: all: Modify dbi accessors to take dbi_base as argument
PCI: dwc: artpec6: Populate cpu_addr_fixup ops
PCI: dwc: dra7xx: Populate cpu_addr_fixup ops
PCI: dwc: designware: Add new *ops* for CPU addr fixup
PCI: dwc: Fix uninitialized variable in dw_handle_msi_irq()
PCI: dwc: Unindent dw_handle_msi_irq() loop
PCI: dwc: Fix dw_pcie_ops NULL pointer dereference
PCI: dwc: Select PCI_HOST_COMMON for hisi
PCI: thunder-pem: Fix legacy firmware PEM-specific resources
PCI: thunder-pem: Add legacy firmware support for Cavium ThunderX host controller
PCI: thunder-pem: Use Cavium assigned hardware ID for ThunderX host controller
PCI: iproc: Save host bridge window resource in struct iproc_pcie
PCI/ASPM: Always set link->downstream to avoid NULL dereference on remove
PCI: Prevent VPD access for QLogic ISP2722
PCI: exynos: Initialize elbi_base even when using PHY framework
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:20 +0000 (15:15 +0530)]
ARM: DRA7: clockdomain: Change the CLKTRCTRL of CM_PCIE_CLKSTCTRL to SW_WKUP
The PCIe programming sequence in TRM suggests CLKSTCTRL of PCIe should be
set to SW_WKUP. There are no issues when CLKSTCTRL is set to HW_AUTO in RC
mode. However in EP mode, the host system is not able to access the
MEMSPACE and setting the CLKSTCTRL to SW_WKUP fixes it.
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:19 +0000 (15:15 +0530)]
MAINTAINERS: Add PCI Endpoint maintainer
Add maintainer for the newly introduced PCI Endpoint framework.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:18 +0000 (15:15 +0530)]
Documentation: PCI: Add userguide for PCI endpoint test function
Add documentation to help users use pci-epf-test function driver and
pci_endpoint_test host driver for testing PCI.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:17 +0000 (15:15 +0530)]
tools: PCI: Add sample test script to invoke pcitest
Add a simple test script that invokes the pcitest userspace tool to perform
all the PCI endpoint tests (BAR tests, interrupt tests, read tests, write
tests and copy tests).
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:16 +0000 (15:15 +0530)]
tools: PCI: Add a userspace tool to test PCI endpoint
Add a userspace tool to invoke the ioctls exposed by the PCI endpoint test
driver to perform various PCI tests.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:15 +0000 (15:15 +0530)]
Documentation: misc-devices: Add Documentation for pci-endpoint-test driver
Add Documentation for pci-endpoint-test driver.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:14 +0000 (15:15 +0530)]
misc: Add host side PCI driver for PCI test function device
Add PCI endpoint test driver that can verify base address register, legacy
interrupt/MSI interrupt and read/write/copy buffers between host and
device. The corresponding pci-epf-test function driver should be used on
the EP side.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:13 +0000 (15:15 +0530)]
PCI: Add device IDs for DRA74x and DRA72x
Add device IDs for DRA74x and DRA72x devices. These devices have
configurable PCI endpoint.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:12 +0000 (15:15 +0530)]
dt-bindings: PCI: dra7xx: Add DT bindings to enable unaligned access
Update device tree binding documentation of TI's dra7xx PCI controller to
include property for enabling unaligned mem access.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:11 +0000 (15:15 +0530)]
PCI: dwc: dra7xx: Workaround for errata id i870
According to errata i870, access to the PCIe slave port that are not 32-bit
aligned will result in incorrect mapping to TLP Address and Byte enable
fields.
Accessing non 32-bit aligned data causes incorrect data in the target
buffer if memcpy is used. Implement the workaround for this errata here.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:09 +0000 (15:15 +0530)]
dt-bindings: PCI: dra7xx: Add DT bindings for PCI dra7xx EP mode
Add device tree binding documentation for PCI dra7xx EP mode.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:08 +0000 (15:15 +0530)]
PCI: dwc: dra7xx: Add EP mode support
The PCIe controller integrated in dra7xx SoCs is capable of operating in
endpoint mode. Add endpoint mode support to dra7xx driver.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:07 +0000 (15:15 +0530)]
PCI: dwc: dra7xx: Facilitate wrapper and MSI interrupts to be enabled independently
No functional change. Split dra7xx_pcie_enable_interrupts() into
dra7xx_pcie_enable_wrapper_interrupts() and
dra7xx_pcie_enable_msi_interrupts() so that wrapper interrupts and MSI
interrupts can be enabled independently. This is in preparation for adding
EP mode support to dra7xx driver since EP mode doesn't have to enable
msi_interrupts.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:06 +0000 (15:15 +0530)]
dt-bindings: PCI: Add DT bindings for PCI designware EP mode
Add device tree binding documentation for PCI designware EP mode.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:05 +0000 (15:15 +0530)]
PCI: dwc: designware: Add EP mode support
Add endpoint mode support to designware driver. This uses the EP Core layer
introduced recently to add endpoint mode support. *Any* function driver
can now use this designware device in order to achieve the EP
functionality.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:04 +0000 (15:15 +0530)]
Documentation: PCI: Add binding documentation for pci-test endpoint function
Add binding documentation for pci-test endpoint function that helps in
adding and configuring pci-test endpoint function.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Colin Ian King [Fri, 21 Apr 2017 07:02:30 +0000 (08:02 +0100)]
PCI: imx6: Fix spelling mistake: "contol" -> "control"
Trivial fix to spelling mistake in dev_err message
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Richard Zhu <hongxing.Zhu@nxp.com>
Tomasz Nowicki [Wed, 29 Mar 2017 12:16:13 +0000 (14:16 +0200)]
PCI/ACPI: Add ThunderX pass2.x 2nd node MCFG quirk
Currently SoCs pass2.x do not emulate EA headers for ACPI boot method at
all. However, for pass2.x some devices (like EDAC) advertise incorrect
base addresses in their BARs which results in driver probe failure during
resource request. Since all problematic blocks are on 2nd NUMA node under
domain 10 add necessary quirk entry to obtain BAR addresses correction
using EA header emulation.
Fixes:
44f22bd91e88 ("PCI: Add MCFG quirks for Cavium ThunderX pass2.x host controller")
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Robert Richter <rrichter@cavium.com>
CC: stable@vger.kernel.org # v4.10+
Bjorn Helgaas [Fri, 21 Apr 2017 16:42:54 +0000 (11:42 -0500)]
PCI/ACPI: Tidy up MCFG quirk whitespace
With no blank lines, it's not obvious where the macro definitions end and
the uses begin. Add some blank lines and reorder the ThunderX definitions.
No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v4.10+
Brian Norris [Fri, 10 Mar 2017 02:46:17 +0000 (18:46 -0800)]
PCI: rockchip: Modularize
Now that we've exported pci_remap_iospace() and added proper remove()
support, there's no reason this can't be a loadable module.
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Shawn Lin <shawn.lin@rock-chips.com>
Brian Norris [Fri, 10 Mar 2017 02:46:16 +0000 (18:46 -0800)]
PCI: Export pci_remap_iospace() and pci_unmap_iospace()
These are useful for PCIe host drivers, and those drivers can be modules.
[bhelgaas: don't remove __weak; it's removed elsewhere]
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Shawn Lin <shawn.lin@rock-chips.com>
Brian Norris [Fri, 10 Mar 2017 02:46:15 +0000 (18:46 -0800)]
PCI: rockchip: Add remove() support
Currently, if we try to unbind the platform device, the remove will
succeed, but the removal won't undo most of the registration, leaving
partially-configured PCI devices in the system.
This allows, for example, a simple 'lspci' to crash the system, as it will
try to touch the freed (via devm_*) driver structures, e.g., on RK3399:
# echo
f8000000.pcie > /sys/bus/platform/drivers/rockchip-pcie/unbind
# lspci
So let's implement device remove().
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Shawn Lin <shawn.lin@rock-chips.com>
Bjorn Helgaas [Wed, 19 Apr 2017 12:44:51 +0000 (07:44 -0500)]
PCI: Include PCI-to-PCIe bridges as "Downstream Ports"
A PCI/PCI-X to PCI Express bridge, sometimes referred to as a "reverse
bridge", is a bridge with conventional PCI or PCI-X on its primary side and
a PCI Express Port on its secondary (downstream) side.
That PCIe Port is a Downstream Port and could be connected to a slot, just
like a Root Port or a Switch Downstream Port. Make pcie_downstream_port()
return true for them, so we can access the Slot registers in the PCIe
capability.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Marc Gonzalez [Mon, 10 Apr 2017 17:46:54 +0000 (19:46 +0200)]
PCI: Improve __pci_read_base() robustness
Local variables 'l' and 'sz' are uninitialized. Normally, they would
be initialized by pci_read_config_dword() but when an error occurs,
some drivers immediately return an error code, which leaves the
argument uninitialized.
Provide a safe initial value to make the code more robust.
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Elena Reshetova [Tue, 18 Apr 2017 14:02:48 +0000 (09:02 -0500)]
PCI: hv: Convert hv_pci_dev.refs from atomic_t to refcount_t
refcount_t type and corresponding API should be used instead of atomic_t
when the variable is used as a reference counter. This allows to avoid
accidental refcounter overflows that might lead to use-after-free
situations.
Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com>
Jayachandran C [Thu, 13 Apr 2017 20:30:45 +0000 (20:30 +0000)]
PCI: Avoid generating invalid ThunderX2 DMA aliases
On Cavium ThunderX2 arm64 SoCs (formerly known as Broadcom Vulcan), the PCI
topology is slightly unusual. For a multi-node system, it looks like:
00:00.0 PCI bridge to [bus 01-1e]
01:0a.0 PCI-to-PCIe bridge to [bus 02-04]
02:00.0 PCIe Root Port bridge to [bus 03-04] (XLATE_ROOT)
03:00.0 PCIe Endpoint
pci_for_each_dma_alias() assumes IOMMU translation is done at the root of
the PCI hierarchy. It generates 03:00.0, 01:0a.0, and 00:00.0 as DMA
aliases for 03:00.0 because buses 01 and 00 are non-PCIe buses that don't
carry the Requester ID.
Because the ThunderX2 IOMMU is at 02:00.0, the Requester IDs 01:0a.0 and
00:00.0 are never valid for the endpoint. This quirk stops alias
generation at the XLATE_ROOT bridge so we won't generate 01:0a.0 or
00:00.0.
The current IOMMU code only maps the last alias (this is a separate bug in
itself). Prior to this quirk, we only created IOMMU mappings for the
invalid Requester ID 00:00:0, which never matched any DMA transactions.
With this quirk, we create IOMMU mappings for a valid Requester ID, which
fixes devices with no aliases but leaves devices with aliases still broken.
The last alias for the endpoint is also used by the ARM GICv3 MSI-X code.
Without this quirk, the GIC Interrupt Translation Tables are setup with the
invalid Requester ID, and the MSI-X generated by the device fails to be
translated and routed.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=195447
Signed-off-by: Jayachandran C <jnair@caviumnetworks.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: David Daney <david.daney@cavium.com>
Jayachandran C [Thu, 13 Apr 2017 20:30:44 +0000 (20:30 +0000)]
PCI: Add device flag PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT
Add a new quirk flag PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT to limit the DMA alias
search to go no further than the bridge where the IOMMU unit is attached.
The flag will be used to indicate a bridge device which forwards the
address translation requests to the IOMMU, i.e., where the interrupt and
DMA requests leave the PCIe hierarchy and go into the system blocks.
Usually this happens at the PCI RC, so this flag is not needed. But on
systems where there are bridges that introduce aliases above the IOMMU,
this flag prevents pci_for_each_dma_alias() from generating aliases that
the IOMMU will never see.
The function pci_for_each_dma_alias() is updated to stop when it see a
bridge with this flag set.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=195447
Signed-off-by: Jayachandran C <jnair@caviumnetworks.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: David Daney <david.daney@cavium.com>
Jarod Wilson [Wed, 12 Apr 2017 17:33:04 +0000 (12:33 -0500)]
PCI: Add bridge DMA alias quirk for ITE 8893 bridge
The ITE 8893 bridge has the same problems as the ITE 8892, which were
resulting in crippling an older PCI 1Gbps NIC down to 45Mbps throughput
with IOMMU and VT-d enabled. With the patch, this old e1000 goes back up
to ~900Mbps.
Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Logan Gunthorpe [Thu, 2 Mar 2017 23:24:34 +0000 (16:24 -0700)]
switchtec: Add IOCTLs to the Switchtec driver
Add a couple of special IOCTLs to:
* Inform userspace of firmware partition locations
* Pass event counts and allow userspace to wait on events
* Translate PFF numbers used by the switch to port numbers
[Dan Carpenter <dan.carpenter@oracle.com>: fix off-by-one in
ioctl_event_ctl()]
Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Stephen Bates <stephen.bates@microsemi.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Wei Zhang <wzhang@fb.com>
Reviewed-by: Jens Axboe <axboe@fb.com>
Logan Gunthorpe [Thu, 2 Mar 2017 23:24:33 +0000 (16:24 -0700)]
switchtec: Add sysfs attributes to the Switchtec driver
Add a few read-only sysfs attributes which provide some device information
that is exposed from the devices, primarily component and device names and
versions.
These are documented in Documentation/ABI/testing/sysfs-class-switchtec.
Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Stephen Bates <stephen.bates@microsemi.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Wei Zhang <wzhang@fb.com>
Reviewed-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Logan Gunthorpe [Thu, 2 Mar 2017 23:24:32 +0000 (16:24 -0700)]
switchtec: Add user interface documentation
Add standard documentation for the sysfs switchtec attributes and a RST
formatted text file which documents the char device interface. Jonathan
Corbet has indicated he will move this to a new user-space developer
documentation book once it's created.
Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Stephen Bates <stephen.bates@microsemi.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Wei Zhang <wzhang@fb.com>
Reviewed-by: Jens Axboe <axboe@fb.com>
Shawn Lin [Tue, 11 Apr 2017 21:27:02 +0000 (16:27 -0500)]
PCI: rockchip: Set PCI_EXP_LNKSTA_SLC in the Root Port
All platforms using Rockchip use a common clock for the Root Port and the
slot connected to it. Indicate this by setting the Slot Clock Configuration
(PCI_EXP_LNKSTA_SLC) bit in the Root Port's Link Status.
Per the Implementation Note in the spec (PCIe r3.1, sec 7.8.7), if the
downstream component also sets PCI_EXP_LNKSTA_SLC, software may set the
Common Clock Configuration (PCI_EXP_LNKCTL_CCC) bits on both ends of the
Link. This is done by pcie_aspm_configure_common_clock().
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Cc: Brian Norris <briannorris@chromium.org>
Cc: jeffy.chen <jeffy.chen@rock-chips.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:03 +0000 (15:15 +0530)]
PCI: endpoint: functions: Add an EP function to test PCI
Adds a new endpoint function driver (to program the virtual test device)
making use of the EP-core library.
[bhelgaas: fold in pci_epf_test_probe() -ENOMEM test from Wei Yongjun
<weiyongjun1@huawei.com>]
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:02 +0000 (15:15 +0530)]
Documentation: PCI: Add specification for the *PCI test* function device
Add specification for the *PCI test* virtual function device. The endpoint
function driver and the host PCI driver should be created based on this
specification.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:01 +0000 (15:15 +0530)]
PCI: endpoint: Create configfs entry for EPC device and EPF driver
Invoke APIs provided by pci-ep-cfs to create configfs entry for every EPC
device and EPF driver to help users in creating EPF device and binding the
EPF device to the EPC device.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:45:00 +0000 (15:15 +0530)]
Documentation: PCI: Guide to use PCI endpoint configfs
Add Documentation to help users use PCI endpoint to configure PCI endpoint
function and to bind the endpoint function with endpoint controller.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-By: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:44:59 +0000 (15:14 +0530)]
PCI: endpoint: Introduce configfs entry for configuring EP functions
Introduce a new configfs entry to configure the EP function (like
configuring the standard configuration header entries) and to bind the EP
function with EP controller.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 27 Mar 2017 09:44:58 +0000 (15:14 +0530)]
Documentation: PCI: Guide to use PCI Endpoint Core Layer
Add Documentation to help users use endpoint library to enable endpoint
mode in the PCI controller and add new PCI endpoint functions.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-By: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 10 Apr 2017 13:55:10 +0000 (19:25 +0530)]
PCI: endpoint: Add EP core layer to enable EP controller and EP functions
Introduce a new EP core layer in order to support endpoint functions in
linux kernel. This comprises the EPC library (Endpoint Controller Library)
and EPF library (Endpoint Function Library). EPC library implements
functions specific to an endpoint controller and EPF library implements
functions specific to an endpoint function.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Andrey Smirnov [Tue, 28 Mar 2017 15:42:52 +0000 (08:42 -0700)]
PCI: imx6: Do not switch speed if Gen2 is disabled
Save a bit of time and avoid going through link speed change procedure in
configuration where link max speed is limited to Gen1 in DT.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Cc: yurovsky@gmail.com
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Dong Aisheng <dongas86@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Andrey Smirnov [Tue, 28 Mar 2017 15:42:51 +0000 (08:42 -0700)]
PCI: imx6: Do not wait for speed change on i.MX7
As can be seen from [1]:
"...the different behavior between iMX6Q PCIe and iMX7D PCIe maybe caused
by the different controller version.
Regarding to the DOC description, the DIRECT_SPEED_CHANGE should be
cleared after the speed change from GEN1 to GEN2. Unfortunately, when
GEN1 device is used, the behavior is not documented.
So, IC design guys run the simulation and find out the following
behaviors:
1. DIRECT_SPEED_CHANGE will be cleared in 7D after speed change
from GEN1 to GEN2. This matches doc’s description
2. set MAX link speed(PCIE_CAP_TARGET_LINK_SPEED=0x01) as GEN1 and
re-run the simulation, DIRECT_SPEED_CHANGE will not be cleared;
remain as 1, this matches your result, but function test is
passed, so this bit should not affect the normal PCIe function."
imx6_pcie_wait_for_speed_change() will report false failures for Gen1 ->
Gen1 speed transition, so avoid doing that check and just rely on
imx6_pcie_wait_for_link() only.
[1] https://community.nxp.com/message/867943
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Cc: yurovsky@gmail.com
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Dong Aisheng <dongas86@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Andrey Smirnov [Tue, 28 Mar 2017 15:42:50 +0000 (08:42 -0700)]
PCI: imx6: Allow probe deferral by reset GPIO
Some designs implement reset GPIO via a GPIO expander connected to a
peripheral bus. One such example would be i.MX7 Sabre board where said
GPIO is provided by SPI shift register connected to a bitbanged SPI bus.
To support such designs, allow reset GPIO request to defer probing of the
driver.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Cc: yurovsky@gmail.com
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Dong Aisheng <dongas86@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Andrey Smirnov [Tue, 28 Mar 2017 15:42:49 +0000 (08:42 -0700)]
PCI: imx6: Add code to support i.MX7D
Add various bits of code needed to support i.MX7D variant of the IP.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Cc: yurovsky@gmail.com
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Dong Aisheng <dongas86@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: devicetree@vger.kernel.org
K. Y. Srinivasan [Fri, 24 Mar 2017 18:07:22 +0000 (11:07 -0700)]
PCI: hv: Allocate interrupt descriptors with GFP_ATOMIC
The memory allocation here needs to be non-blocking. Fix the issue.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Long Li <longli@microsoft.com>
Cc: <stable@vger.kernel.org>
K. Y. Srinivasan [Fri, 24 Mar 2017 18:07:21 +0000 (11:07 -0700)]
PCI: hv: Specify CPU_AFFINITY_ALL for MSI affinity when >= 32 CPUs
When we have 32 or more CPUs in the affinity mask, we should use a special
constant to specify that to the host. Fix this issue.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Long Li <longli@microsoft.com>
Cc: <stable@vger.kernel.org>
Keerthy [Mon, 13 Mar 2017 13:43:28 +0000 (19:13 +0530)]
PCI: dwc: dra7xx: Push request_irq() call to the bottom of probe
Currently devm_request_irq() is being called before base, PCI fields of
dra7xx_pcie structure are populated. It is called even before
pm_runtime_enable() and pm_runtime_get_sync() are called. This will lead
to exceptions if in case an interrupt is triggered before the all of the
above are done. Hence push the devm_request_irq() call to the end of the
probe.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 13 Mar 2017 13:43:27 +0000 (19:13 +0530)]
PCI: dwc: designware: Move _unroll configurations to a separate function
No functional change. Rename dw_pcie_writel_unroll/dw_pcie_readl_unroll to
dw_pcie_writel_ob_unroll/dw_pcie_readl_ob_unroll respectively as these
functions are used to perform only outbound configurations. Also move
these _unroll configurations to a separate function.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kishon Vijay Abraham I [Mon, 13 Mar 2017 13:43:26 +0000 (19:13 +0530)]
PCI: dwc: all: Modify dbi accessors to access data of 4/2/1 bytes
Previously dbi accessors can be used to access data of size 4 bytes. But
there might be situations (like accessing MSI_MESSAGE_CONTROL in order to
set/get the number of required MSI interrupts in EP mode) where dbi
accessors must be used to access data of size 2. This is in preparation
for adding endpoint mode support to designware driver.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Niklas Cassel <niklas.cassel@axis.com>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Joao Pinto <Joao.Pinto@synopsys.com>
Kishon Vijay Abraham I [Mon, 13 Mar 2017 13:43:25 +0000 (19:13 +0530)]
PCI: dwc: all: Modify dbi accessors to take dbi_base as argument
dwc has 2 dbi address space labeled dbics and dbics2. The existing helper
to access dbi address space can access only dbics. However dbics2 has to
be accessed for programming the BAR registers in the case of EP mode. This
is in preparation for adding EP mode support to dwc driver.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Niklas Cassel <niklas.cassel@axis.com>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Joao Pinto <Joao.Pinto@synopsys.com>
Kishon Vijay Abraham I [Mon, 13 Mar 2017 13:43:24 +0000 (19:13 +0530)]
PCI: dwc: artpec6: Populate cpu_addr_fixup ops
Populate cpu_addr_fixup ops to extract the least 28 bits of the
corresponding CPU address.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Niklas Cassel <niklas.cassel@axis.com>
Acked-by: Joao Pinto <jpinto@synopsys.com>
Kishon Vijay Abraham I [Mon, 13 Mar 2017 13:43:23 +0000 (19:13 +0530)]
PCI: dwc: dra7xx: Populate cpu_addr_fixup ops
Populate cpu_addr_fixup ops to extract the least 28 bits of the
corresponding CPU address.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Joao Pinto <jpinto@synopsys.com>
Kishon Vijay Abraham I [Mon, 13 Mar 2017 13:43:22 +0000 (19:13 +0530)]
PCI: dwc: designware: Add new *ops* for CPU addr fixup
Some platforms (like dra7xx) require only the least 28 bits of the
corresponding 32 bit CPU address to be programmed in the address
translation unit. This modified address is stored in io_base/mem_base/
cfg0_base/cfg1_base in dra7xx_pcie_host_init(). While this is okay for
host mode where the address range is fixed, device mode requires different
addresses to be programmed based on the host buffer address. Add a new
ops to get the least 28 bits of the corresponding 32 bit CPU address and
invoke it before programming the address translation unit.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Joao Pinto <jpinto@synopsys.com>
Dan Carpenter [Thu, 16 Mar 2017 19:34:51 +0000 (14:34 -0500)]
PCI: dwc: Fix uninitialized variable in dw_handle_msi_irq()
The bug is that "val" is unsigned long but we only initialize 32 bits of
it. Then we test "if (val)" and that might be true not because we set the
bits but because some were never initialized.
Fixes:
f342d940ee0e ("PCI: exynos: Add support for MSI")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Bjorn Helgaas [Thu, 16 Mar 2017 19:34:59 +0000 (14:34 -0500)]
PCI: dwc: Unindent dw_handle_msi_irq() loop
Use "continue" to skip rest of the loop when possible to save an indent
level. No functional change intended.
Suggested-by: walter harms <wharms@bfs.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Niklas Cassel [Mon, 3 Apr 2017 22:35:12 +0000 (17:35 -0500)]
PCI: dwc: Fix dw_pcie_ops NULL pointer dereference
Fix a crash from dereferencing a NULL dw_pcie_ops pointer. For example,
on ARTPEC-6:
Unable to handle kernel NULL pointer dereference at virtual address
00000004
pgd =
c0204000
[
00000004] *pgd=
00000000
Internal error: Oops: 5 [#1] SMP ARM
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.11.0-rc3-next-
20170321 #1
Hardware name: Axis ARTPEC-6 Platform
task:
db098000 task.stack:
db096000
PC is at dw_pcie_writel_dbi+0x2c/0xd0
Prior to
442ec4c04d12 ("PCI: dwc: all: Split struct pcie_port into
host-only and core structures"), every driver had a struct pcie_host_ops
with function pointers, typically used as:
if (pp->ops->readl_rc)
return pp->ops->readl_rc(...);
442ec4c04d12 split struct pcie_host_ops into two pieces: struct
dw_pcie_host_ops and struct dw_pcie_ops, so the above became:
if (pci->ops->readl_dbi)
return pci->ops->readl_dbi(...);
But pcie-artpec6.c and pcie-designware-plat.c don't need the dw_pcie_ops
pointers and didn't supply a pci->ops struct, which leads to NULL pointer
dereferences.
Supply an empty struct dw_pcie_ops to avoid the NULL pointer dereferences.
[bhelgaas: changelog]
Fixes:
442ec4c04d12 ("PCI: dwc: all: Split struct pcie_port into host-only and core structures")
Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Joao Pinto <jpinto@synopsys.com>
Arnd Bergmann [Mon, 3 Apr 2017 21:17:11 +0000 (16:17 -0500)]
PCI: dwc: Select PCI_HOST_COMMON for hisi
Without PCI_HOST_COMMON support enabled, we get a link error:
drivers/pci/dwc/built-in.o: In function `hisi_pcie_map_bus':
pcie-hisi.c:(.text+0x8860): undefined reference to `pci_ecam_map_bus'
drivers/pci/dwc/built-in.o: In function `hisi_pcie_almost_ecam_probe':
pcie-hisi.c:(.text+0x88b4): undefined reference to `pci_host_common_probe'
Add an explicit 'select', as the other users have.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Shawn Lin [Mon, 20 Mar 2017 09:39:40 +0000 (17:39 +0800)]
PCI: rockchip: Advertise 128-byte Read Completion Boundary support
Rockchip Root Ports support either 64 or 128 byte Read Completion Boundary
(RCB). Set the RCB bit in the Link Control register to indicate this.
A 128 byte RCB significantly improves performance of NVMe with libaio.
[bhelgaas: changelog]
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Brian Norris <briannorris@chromium.org>
Cc: Jeffy Chen <jeffy.chen@rock-chips.com>
Tomasz Nowicki [Fri, 31 Mar 2017 15:06:44 +0000 (17:06 +0200)]
PCI: thunder-pem: Fix legacy firmware PEM-specific resources
SZ_16M PEM resource size includes PEM-specific register and its children
resources. Reservation of the whole SZ_16M range leads to child device
driver failure when pcieport driver is requesting resources:
pcieport 0004:1f:00.0: can't enable device: BAR 0 [mem 0x87e0c0f00000-0x87e0c0ffffff 64bit] not claimed
So we cannot reserve full 16M here and instead we want to reserve
PEM-specific register only which is SZ_64K.
At the end increase PEM resource to SZ_16M since this is what
thunder_pem_init() call expects for proper initialization.
Fixes:
9abb27c7594a ("PCI: thunder-pem: Add legacy firmware support for Cavium ThunderX host controller")
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v4.10+
Manish Jaggi [Thu, 30 Mar 2017 23:47:14 +0000 (18:47 -0500)]
PCI: Apply Cavium ACS quirk only to CN81xx/CN83xx/CN88xx devices
Only apply the Cavium ACS quirk to devices with ID in the range
0xa000-0xa0ff. These are the on-chip PCI devices for CN81xx/CN83xx/CN88xx.
Fixes:
b404bcfbf035 ("PCI: Add ACS quirk for all Cavium devices")
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Manish Jaggi <mjaggi@cavium.com>
Acked-by: David Daney <david.daney@cavium.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Keith Busch [Thu, 30 Mar 2017 03:49:17 +0000 (22:49 -0500)]
PCI: Short-circuit pci_device_is_present() for disconnected devices
If the PCI device is disconnected, return false immediately from
pci_device_is_present(). pci_device_is_present() uses the bus accessors,
so the early return in the device accessors doesn't help here.
Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Wei Zhang <wzhang@fb.com>
Keith Busch [Thu, 30 Mar 2017 03:49:11 +0000 (22:49 -0500)]
PCI/MSI: Skip disabling disconnected devices
Check the device connected state prior to executing device shutdown
operations or writing MSI messages so that tear down on disconnected
devices completes quicker.
Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Wei Zhang <wzhang@fb.com>
Keith Busch [Thu, 30 Mar 2017 03:49:06 +0000 (22:49 -0500)]
PCI: Don't attempt config access to disconnected devices
If we've detected the PCI device is disconnected, there is no need to
attempt to access its config space since we know the operation will fail.
Make all the config reads and writes return -ENODEV error immediately when
in such a state.
If a caller requests a config read to a disconnected device, return a data
value of all 1's. This is the same as what hardware is expected to return
when accessing a removed device, but software can do this faster without
relying on hardware.
Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Wei Zhang <wzhang@fb.com>
Keith Busch [Thu, 30 Mar 2017 03:48:59 +0000 (22:48 -0500)]
PCI: Add device disconnected state
Add a new state to pci_dev to be set when it is unexpectedly disconnected.
The PCI driver tear down functions can observe this new device state so
they may skip operations that will fail.
The pciehp and pcie-dpc drivers are aware when the link is down, so these
set the flag when their handlers detect the device is disconnected.
Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Wei Zhang <wzhang@fb.com>
Keith Busch [Tue, 7 Feb 2017 19:32:33 +0000 (14:32 -0500)]
PCI: Export PCI device config accessors
Replace the inline PCI device config read and write accessors with exported
functions. This is preparing for these functions to make use of private
data.
Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Wei Zhang <wzhang@fb.com>
Russell King [Tue, 17 Jan 2017 21:40:52 +0000 (21:40 +0000)]
PCI: mvebu: Avoid changing the SCC bit in the Link Status register
It seems on later Armada 38x, the slot clock configuration bit is not
read-only, but can be written. This means that our RW1C protection ends up
clearing this bit when the link control register is written.
Adjust the mask so that we only avoid writing '1' bits to the RW1C bits of
this register (bits 15 and 14 of the link status) rather than masking out
all the status register bits.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Linus Walleij [Sun, 12 Mar 2017 22:24:03 +0000 (23:24 +0100)]
PCI: faraday: Add Faraday Technology FTPCI100 PCI Host Bridge driver
Add a host bridge driver for the Faraday Technology FPPCI100 host bridge,
used for Cortina Systems Gemini SoC (SL3516) PCI Host Bridge.
This code is inspired by the out-of-tree OpenWRT patch and then extensively
rewritten for device tree and using the modern helpers to cut down and
modernize the code to all new PCI frameworks. A driver exists in U-Boot as
well.
Tested on the ITian Square One SQ201 NAS with the following result in the
boot log (trimmed to relevant parts):
OF: PCI: host bridge /soc/pci@
50000000 ranges:
OF: PCI: IO 0x50000000..0x500fffff -> 0x00000000
OF: PCI: MEM 0x58000000..0x5fffffff -> 0x58000000
ftpci100
50000000.pci: PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [bus 00-ff]
pci_bus 0000:00: root bus resource [io 0x0000-0xfffff]
pci_bus 0000:00: root bus resource [mem 0x58000000-0x5fffffff]
ftpci100
50000000.pci:
DMA MEM1 BASE: 0x0000000000000000 -> 0x0000000007ffffff config
00070000
ftpci100
50000000.pci:
DMA MEM2 BASE: 0x0000000000000000 -> 0x0000000003ffffff config
00060000
ftpci100
50000000.pci:
DMA MEM3 BASE: 0x0000000000000000 -> 0x0000000003ffffff config
00060000
PCI: bus0: Fast back to back transfers disabled
pci 0000:00:00.0: of_irq_parse_pci() failed with rc=-22
pci 0000:00:0c.0: BAR 0: assigned [mem 0x58000000-0x58007fff]
pci 0000:00:09.2: BAR 0: assigned [mem 0x58008000-0x580080ff]
pci 0000:00:09.0: BAR 4: assigned [io 0x1000-0x101f]
pci 0000:00:09.1: BAR 4: assigned [io 0x1020-0x103f]
pci 0000:00:09.0: enabling device (0140 -> 0141)
pci 0000:00:09.0: HCRESET not completed yet!
pci 0000:00:09.1: enabling device (0140 -> 0141)
pci 0000:00:09.1: HCRESET not completed yet!
pci 0000:00:09.2: enabling device (0140 -> 0142)
rt61pci 0000:00:0c.0: enabling device (0140 -> 0142)
ieee80211 phy0: rt2x00_set_chip: Info - Chipset detected -
rt: 2561, rf: 0003, rev: 000c
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-pci: EHCI PCI platform driver
ehci-pci 0000:00:09.2: EHCI Host Controller
ehci-pci 0000:00:09.2: new USB bus registered, assigned bus number 1
ehci-pci 0000:00:09.2: irq 125, io mem 0x58008000
ehci-pci 0000:00:09.2: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 4 ports detected
uhci_hcd: USB Universal Host Controller Interface driver
uhci_hcd 0000:00:09.0: UHCI Host Controller
uhci_hcd 0000:00:09.0: new USB bus registered, assigned bus number 2
uhci_hcd 0000:00:09.0: HCRESET not completed yet!
uhci_hcd 0000:00:09.0: irq 123, io base 0x00001000
hub 2-0:1.0: USB hub found
hub 2-0:1.0: config failed, hub doesn't have any ports! (err -19)
uhci_hcd 0000:00:09.1: UHCI Host Controller
uhci_hcd 0000:00:09.1: new USB bus registered, assigned bus number 3
uhci_hcd 0000:00:09.1: HCRESET not completed yet!
uhci_hcd 0000:00:09.1: irq 124, io base 0x00001020
hub 3-0:1.0: USB hub found
hub 3-0:1.0: config failed, hub doesn't have any ports! (err -19)
scsi 0:0:0:0: Direct-Access USB Flash Disk 1.00 PQ: 0 ANSI: 2
sd 0:0:0:0: [sda]
7900336 512-byte logical blocks: (4.04 GB/3.77 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] No Caching mode page found
sd 0:0:0:0: [sda] Assuming drive cache: write through
sda: sda1 sda2 sda3
sd 0:0:0:0: [sda] Attached SCSI removable disk
ieee80211 phy0: rt2x00lib_request_firmware: Info -
Loading firmware file 'rt2561s.bin'
ieee80211 phy0: rt2x00lib_request_firmware: Info -
Firmware detected - version: 0.8
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
$ lspci
00:00.0 Class 0600: 159b:4321
00:09.2 Class 0c03: 1106:3104
00:09.0 Class 0c03: 1106:3038
00:09.1 Class 0c03: 1106:3038
00:0c.0 Class 0280: 1814:0301
$ cat /proc/interrupts
CPU0
123: 0 PCI 0 Edge uhci_hcd:usb2
124: 0 PCI 1 Edge uhci_hcd:usb3
125: 159 PCI 2 Edge ehci_hcd:usb1
126: 1082 PCI 3 Edge rt61pci
$ cat /proc/iomem
50000000-
500000ff : /soc/pci@
50000000
58000000-
5fffffff : Gemini PCI MEM
58000000-
58007fff : 0000:00:0c.0
58000000-
58007fff : 0000:00:0c.0
58008000-
580080ff : 0000:00:09.2
58008000-
580080ff : ehci_hcd
The EHCI USB hub works fine; I can mount and manage files and the IRQs just
keep ticking up. I can issue iwlist wlan0 scanning and see all the WLANs
here. I don't have wpa_supplicant so have not tried connecting to them.
[bhelgaas: fold in %pap change from Arnd Bergmann <arnd@arndb.de>]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Janos Laube <janos.dev@gmail.com>
CC: Paulius Zaleckas <paulius.zaleckas@gmail.com>
CC: Hans Ulli Kroll <ulli.kroll@googlemail.com>
CC: Florian Fainelli <f.fainelli@gmail.com>
CC: Feng-Hsin Chiang <john453@faraday-tech.com>
CC: Greentime Hu <green.hu@gmail.com>
Linus Walleij [Sun, 12 Mar 2017 22:23:52 +0000 (23:23 +0100)]
PCI: Add DT bindings for Faraday Technology PCI Host Bridge
Add device tree bindings for the Faraday technology PCI Host Bridge. This
IP is found in the Storlink/Storm/Cortina Gemini SoC platform.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
CC: Janos Laube <janos.dev@gmail.com>
CC: Paulius Zaleckas <paulius.zaleckas@gmail.com>
CC: Hans Ulli Kroll <ulli.kroll@googlemail.com>
CC: Florian Fainelli <f.fainelli@gmail.com>
CC: devicetree@vger.kernel.org
CC: Feng-Hsin Chiang <john453@faraday-tech.com>
CC: Greentime Hu <green.hu@gmail.com>
Long Li [Thu, 23 Mar 2017 21:58:32 +0000 (14:58 -0700)]
PCI: hv: Lock PCI bus on device eject
A PCI_EJECT message can arrive at the same time we are calling
pci_scan_child_bus() in the workqueue for the previous PCI_BUS_RELATIONS
message or in create_root_hv_pci_bus(). In this case we could potentially
modify the bus from multiple places.
Properly lock the bus access.
Thanks Dexuan Cui <decui@microsoft.com> for pointing out the race condition
in create_root_hv_pci_bus().
Reported-by: Xiaofeng Wang <xiaofwan@redhat.com>
Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Long Li [Thu, 23 Mar 2017 21:58:10 +0000 (14:58 -0700)]
PCI: hv: Properly handle PCI bus remove
hv_pci_devices_present() is called in hv_pci_remove() when we remove a PCI
device from the host, e.g., by disabling SR-IOV on a device. In
hv_pci_remove(), the bus is already removed before the call, so we don't
need to rescan the bus in the workqueue scheduled from
hv_pci_devices_present().
By introducing bus state hv_pcibus_removed, we can avoid this situation.
Reported-by: Xiaofeng Wang <xiaofwan@redhat.com>
Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Brian Norris [Fri, 10 Mar 2017 02:46:14 +0000 (18:46 -0800)]
PCI: rockchip: Make 'return 0' more obvious in probe()
There's no way to get here with 'err != 0'. Just return 0 to be more
obvious and prevent future changes from accidentally erroring out here
without going through the right error paths.
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Bjorn Helgaas [Thu, 23 Mar 2017 22:21:26 +0000 (17:21 -0500)]
PCI: rockchip: Unindent rockchip_pcie_set_power_limit()
If regulator_get_current_limit() returns 0 or error, return early so the
body of the function doesn't have to be indented as the body of an "if"
statement. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tomasz Nowicki [Thu, 23 Mar 2017 22:10:16 +0000 (17:10 -0500)]
PCI: thunder-pem: Add legacy firmware support for Cavium ThunderX host controller
During early days of PCI quirks support, ThunderX firmware did not provide
PNP0c02 node with PCI configuration space and PEM-specific register ranges.
This means that for legacy FW we are not reserving these resources and
cannot gather PEM-specific resources for further PEM initialization.
To support already deployed legacy FW, calculate PEM-specific ranges and
provide resources reservation as fallback scenario into PEM driver when we
could not gather PEM reg base from ACPI tables.
Tested-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Signed-off-by: Vadim Lomovtsev <Vadim.Lomovtsev@caviumnetworks.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Robert Richter <rrichter@cavium.com>
CC: stable@vger.kernel.org # v4.10+
Tomasz Nowicki [Thu, 23 Mar 2017 22:10:10 +0000 (17:10 -0500)]
PCI: thunder-pem: Use Cavium assigned hardware ID for ThunderX host controller
"CAV" is the only PNP/ACPI hardware ID vendor prefix assigned to Cavium so
fix this as it should be from day one.
Fixes:
44f22bd91e88 ("PCI: Add MCFG quirks for Cavium ThunderX pass2.x host controller")
Tested-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Robert Richter <rrichter@cavium.com>
CC: stable@vger.kernel.org # v4.10+
Brian Norris [Fri, 10 Mar 2017 02:46:13 +0000 (18:46 -0800)]
PCI: rockchip: Handle regulator_get_current_limit() failure correctly
regulator_get_current_limit() can return negative error codes. We saved
the return value in an unsigned "curr", and a subsequent check interpreted
a negative error code as a positive (invalid) current limit.
Save the return code as a signed value, which avoids messages like this,
seen on Samsung Chromebook Plus:
rockchip-pcie
f8000000.pcie: invalid power supply
[bhelgaas: changelog]
Fixes:
4816c4c7b82b ("PCI: rockchip: Provide captured slot power limit and scale")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Shawn Lin <shawn.lin@rock-chips.com>
Jon Mason [Wed, 1 Mar 2017 15:53:13 +0000 (10:53 -0500)]
PCI: iproc: Add PCI_DOMAIN dependency to PCI Kconfig
2+ PCI devices fail to be discovered due to each bus having the same PCI
domain. This is because the domain defined in the device tree file is not
being added due to PCI_DOMAIN not being enabled. So, every PCI bus has a
domain of zero. When PCI_DOMAIN is selected by the Kconfig, it picks up
the domain defined in the device tree file and everything works as
expected.
Since both PCIE_IPROC_PLATFORM and PCIE_IPROC_BCMA need PCI_DOMAIN, move
it to PCIE_IPROC so it will be automatically selected for both.
Signed-off-by: Jon Mason <jonmason@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Bjorn Helgaas [Thu, 9 Mar 2017 17:27:07 +0000 (11:27 -0600)]
PCI: iproc: Save host bridge window resource in struct iproc_pcie
The host bridge memory window resource is inserted into the iomem_resource
tree and cannot be deallocated until the host bridge itself is removed.
Previously, the window was on the stack, which meant the iomem_resource
entry pointed into the stack and was corrupted as soon as the probe
function returned, which caused memory corruption and errors like this:
pcie_iproc_bcma bcma0:8: resource collision: [mem 0x40000000-0x47ffffff] conflicts with PCIe MEM space [mem 0x40000000-0x47ffffff]
Move the memory window resource from the stack into struct iproc_pcie so
its lifetime matches that of the host bridge.
Fixes:
c3245a566400 ("PCI: iproc: Request host bridge window resources")
Reported-and-tested-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v4.8+
Yinghai Lu [Wed, 1 Mar 2017 08:25:40 +0000 (00:25 -0800)]
PCI/ASPM: Always set link->downstream to avoid NULL dereference on remove
We call pcie_aspm_exit_link_state() when we remove a device. If the device
is the last PCIe function to be removed below a bridge and the bridge has
an ASPM link_state struct, we disable ASPM on the link. Disabling ASPM
requires link->downstream (used in pcie_config_aspm_link()).
We previously set link->downstream in pcie_aspm_cap_init(), but only if the
device was not blacklisted. Removing the blacklisted device caused a NULL
pointer dereference in the pcie_aspm_exit_link_state() ->
pcie_config_aspm_link() path:
# echo 1 > /sys/bus/pci/devices/0000\:0b\:00.0/remove
...
BUG: unable to handle kernel NULL pointer dereference at
0000000000000080
IP: pcie_config_aspm_link+0x5d/0x2b0
Call Trace:
pcie_aspm_exit_link_state+0x75/0x130
pci_stop_bus_device+0xa4/0xb0
pci_stop_and_remove_bus_device_locked+0x1a/0x30
remove_store+0x50/0x70
dev_attr_store+0x18/0x30
sysfs_kf_write+0x44/0x60
kernfs_fop_write+0x10e/0x190
__vfs_write+0x28/0x110
? rcu_read_lock_sched_held+0x5d/0x80
? rcu_sync_lockdep_assert+0x2c/0x60
? __sb_start_write+0x173/0x1a0
? vfs_write+0xb3/0x180
vfs_write+0xc4/0x180
SyS_write+0x49/0xa0
do_syscall_64+0xa6/0x1c0
entry_SYSCALL64_slow_path+0x25/0x25
---[ end trace
bd187ee0267df5d9 ]---
To avoid this, set link->downstream in alloc_pcie_link_state(), so every
pcie_link_state structure has a valid link->downstream pointer.
[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rajat Jain <rajatja@google.com>
CC: stable@vger.kernel.org
Ethan Zhao [Mon, 27 Feb 2017 08:08:44 +0000 (17:08 +0900)]
PCI: Prevent VPD access for QLogic ISP2722
QLogic ISP2722-based 16/32Gb Fibre Channel to PCIe Adapter has the VPD
access issue too, while read the common pci-sysfs access interface shown as
/sys/devices/pci0000:00/0000:00:03.2/0000:0b:00.0/vpd
with simple 'cat' could cause system hang and panic:
Kernel panic - not syncing: An NMI occurred. Depending on your system the reason for the NMI is logged in any one of the following resources:
1. Integrated Management Log (IML)
2. OA Syslog
3. OA Forward Progress Log
4. iLO Event Log
CPU: 0 PID: 15070 Comm: udevadm Not tainted 4.1.12
Hardware name: HP ProLiant DL380 Gen9/ProLiant DL380 Gen9, BIOS P89 12/27/2015
0000000000000086 000000007f0cdf51 ffff880c4fa05d58 ffffffff817193de
ffffffffa00b42d8 0000000000000075 ffff880c4fa05dd8 ffffffff81714072
0000000000000008 ffff880c4fa05de8 ffff880c4fa05d88 000000007f0cdf51
Call Trace:
<NMI> [<
ffffffff817193de>] dump_stack+0x63/0x81
[<
ffffffff81714072>] panic+0xd0/0x20e
[<
ffffffffa00b390d>] hpwdt_pretimeout+0xdd/0xe0 [hpwdt]
[<
ffffffff81021fc9>] ? sched_clock+0x9/0x10
[<
ffffffff8101c101>] nmi_handle+0x91/0x170
[<
ffffffff8101c10c>] ? nmi_handle+0x9c/0x170
[<
ffffffff8101c5fe>] io_check_error+0x1e/0xa0
[<
ffffffff8101c719>] default_do_nmi+0x99/0x140
[<
ffffffff8101c8b4>] do_nmi+0xf4/0x170
[<
ffffffff817232c5>] end_repeat_nmi+0x1a/0x1e
[<
ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
[<
ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
[<
ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
<<EOE>> [<
ffffffff815db4b3>] raw_pci_read+0x23/0x40
[<
ffffffff815db4fc>] pci_read+0x2c/0x30
[<
ffffffff8136f612>] pci_user_read_config_word+0x72/0x110
[<
ffffffff8136f746>] pci_vpd_pci22_wait+0x96/0x130
[<
ffffffff8136ff9b>] pci_vpd_pci22_read+0xdb/0x1a0
[<
ffffffff8136ea30>] pci_read_vpd+0x20/0x30
[<
ffffffff8137d590>] read_vpd_attr+0x30/0x40
[<
ffffffff8128e037>] sysfs_kf_bin_read+0x47/0x70
[<
ffffffff8128d24e>] kernfs_fop_read+0xae/0x180
[<
ffffffff8120dd97>] __vfs_read+0x37/0x100
[<
ffffffff812ba7e4>] ? security_file_permission+0x84/0xa0
[<
ffffffff8120e366>] ? rw_verify_area+0x56/0xe0
[<
ffffffff8120e476>] vfs_read+0x86/0x140
[<
ffffffff8120f3f5>] SyS_read+0x55/0xd0
[<
ffffffff81720f2e>] system_call_fastpath+0x12/0x71
Shutting down cpus with NMI
Kernel Offset: disabled
drm_kms_helper: panic occurred, switching back to text console
So blacklist the access to its VPD.
Signed-off-by: Ethan Zhao <ethan.zhao@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v4.6+
Jaehoon Chung [Tue, 7 Mar 2017 10:54:05 +0000 (19:54 +0900)]
PCI: exynos: Initialize elbi_base even when using PHY framework
Even when using the PHY framework, we need the elbi_base. Before this
patch, we didn't initialize elbi_base, which caused NULL pointer
dereferences later.
Fixes:
e7cd7ef58e1f ("PCI: exynos: Support the PHY generic framework")
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Logan Gunthorpe [Tue, 7 Mar 2017 00:30:54 +0000 (18:30 -0600)]
MicroSemi Switchtec management interface driver
Microsemi's "Switchtec" line of PCI switch devices is already well
supported by the kernel with standard PCI switch drivers. However, the
Switchtec device advertises a special management endpoint with a separate
PCI function address and class code. This endpoint enables some additional
functionality which includes:
* Packet and Byte Counters
* Switch Firmware Upgrades
* Event and Error logs
* Querying port link status
* Custom user firmware commands
Add a switchtec kernel module which provides PCI driver that exposes a char
device. The char device provides userspace access to this interface
through read, write and (optionally) poll calls.
A userspace tool and library which utilizes this interface is available
at [1]. This tool takes inspiration (and borrows some code) from
nvme-cli [2]. The tool is largely complete at this time but additional
features may be added in the future.
[1] https://github.com/sbates130272/switchtec-user
[2] https://github.com/linux-nvme/nvme-cli
[Dan Carpenter <dan.carpenter@oracle.com>: don't invert error codes]
[Christophe JAILLET <christophe.jaillet@wanadoo.fr>: fix
switchtec_dev_open() error handling]
Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Stephen Bates <stephen.bates@microsemi.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Wei Zhang <wzhang@fb.com>
Reviewed-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvalds [Sun, 5 Mar 2017 20:59:56 +0000 (12:59 -0800)]
Linux 4.11-rc1
Linus Torvalds [Sun, 5 Mar 2017 01:31:39 +0000 (17:31 -0800)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix double-free in batman-adv, from Sven Eckelmann.
2) Fix packet stats for fast-RX path, from Joannes Berg.
3) Netfilter's ip_route_me_harder() doesn't handle request sockets
properly, fix from Florian Westphal.
4) Fix sendmsg deadlock in rxrpc, from David Howells.
5) Add missing RCU locking to transport hashtable scan, from Xin Long.
6) Fix potential packet loss in mlxsw driver, from Ido Schimmel.
7) Fix race in NAPI handling between poll handlers and busy polling,
from Eric Dumazet.
8) TX path in vxlan and geneve need proper RCU locking, from Jakub
Kicinski.
9) SYN processing in DCCP and TCP need to disable BH, from Eric
Dumazet.
10) Properly handle net_enable_timestamp() being invoked from IRQ
context, also from Eric Dumazet.
11) Fix crash on device-tree systems in xgene driver, from Alban Bedel.
12) Do not call sk_free() on a locked socket, from Arnaldo Carvalho de
Melo.
13) Fix use-after-free in netvsc driver, from Dexuan Cui.
14) Fix max MTU setting in bonding driver, from WANG Cong.
15) xen-netback hash table can be allocated from softirq context, so use
GFP_ATOMIC. From Anoob Soman.
16) Fix MAC address change bug in bgmac driver, from Hari Vyas.
17) strparser needs to destroy strp_wq on module exit, from WANG Cong.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (69 commits)
strparser: destroy workqueue on module exit
sfc: fix IPID endianness in TSOv2
sfc: avoid max() in array size
rds: remove unnecessary returned value check
rxrpc: Fix potential NULL-pointer exception
nfp: correct DMA direction in XDP DMA sync
nfp: don't tell FW about the reserved buffer space
net: ethernet: bgmac: mac address change bug
net: ethernet: bgmac: init sequence bug
xen-netback: don't vfree() queues under spinlock
xen-netback: keep a local pointer for vif in backend_disconnect()
netfilter: nf_tables: don't call nfnetlink_set_err() if nfnetlink_send() fails
netfilter: nft_set_rbtree: incorrect assumption on lower interval lookups
netfilter: nf_conntrack_sip: fix wrong memory initialisation
can: flexcan: fix typo in comment
can: usb_8dev: Fix memory leak of priv->cmd_msg_buffer
can: gs_usb: fix coding style
can: gs_usb: Don't use stack memory for USB transfers
ixgbe: Limit use of 2K buffers on architectures with 256B or larger cache lines
ixgbe: update the rss key on h/w, when ethtool ask for it
...
Linus Torvalds [Sat, 4 Mar 2017 19:36:19 +0000 (11:36 -0800)]
Merge tag 'kvm-4.11-2' of git://git./virt/kvm/kvm
Pull more KVM updates from Radim Krčmář:
"Second batch of KVM changes for the 4.11 merge window:
PPC:
- correct assumption about ASDR on POWER9
- fix MMIO emulation on POWER9
x86:
- add a simple test for ioperm
- cleanup TSS (going through KVM tree as the whole undertaking was
caused by VMX's use of TSS)
- fix nVMX interrupt delivery
- fix some performance counters in the guest
... and two cleanup patches"
* tag 'kvm-4.11-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: nVMX: Fix pending events injection
x86/kvm/vmx: remove unused variable in segment_base()
selftests/x86: Add a basic selftest for ioperm
x86/asm: Tidy up TSS limit code
kvm: convert kvm.users_count from atomic_t to refcount_t
KVM: x86: never specify a sample period for virtualized in_tx_cp counters
KVM: PPC: Book3S HV: Don't use ASDR for real-mode HPT faults on POWER9
KVM: PPC: Book3S HV: Fix software walk of guest process page tables
Linus Torvalds [Sat, 4 Mar 2017 19:32:18 +0000 (11:32 -0800)]
Merge tag 'docs-4.11-fixes' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A few fixes for the docs tree, including one for a 4.11 build
regression"
* tag 'docs-4.11-fixes' of git://git.lwn.net/linux:
Documentation/sphinx: fix primary_domain configuration
docs: Fix htmldocs build failure
doc/ko_KR/memory-barriers: Update control-dependencies section
pcieaer doc: update the link
Documentation: Update path to sysrq.txt
Linus Torvalds [Sat, 4 Mar 2017 19:26:18 +0000 (11:26 -0800)]
Merge tag 'staging-4.11-rc1-part2' of git://git./linux/kernel/git/gregkh/staging
Pull staging/IIO driver fixes from Greg KH:
"Here are a few small staging and IIO driver fixes for issues that
showed up after the big set if changes you merged last week.
Nothing major, just small bugs resolved in some IIO drivers, a lustre
allocation fix, and some RaspberryPi driver fixes for reported
problems, as well as a MAINTAINERS entry update.
All of these have been in linux-next for a week with no reported
issues"
* tag 'staging-4.11-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: fsl-mc: fix warning in DT ranges parser
MAINTAINERS: Remove Noralf Trønnes as fbtft maintainer
staging: vchiq_2835_arm: Make cache-line-size a required DT property
staging: bcm2835/mmal-vchiq: unlock on error in buffer_from_host()
staging/lustre/lnet: Fix allocation size for sv_cpt_data
iio: adc: xilinx: Fix error handling
iio: 104-quad-8: Fix off-by-one error when addressing flag register
iio: adc: handle unknow of_device_id data
Linus Torvalds [Sat, 4 Mar 2017 18:42:53 +0000 (10:42 -0800)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
- vmalloc stack regression in CCM
- Build problem in CRC32 on ARM
- Memory leak in cavium
- Missing Kconfig dependencies in atmel and mediatek
- XTS Regression on some platforms (s390 and ppc)
- Memory overrun in CCM test vector
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: vmx - Use skcipher for xts fallback
crypto: vmx - Use skcipher for cbc fallback
crypto: testmgr - Pad aes_ccm_enc_tv_template vector
crypto: arm/crc32 - add build time test for CRC instruction support
crypto: arm/crc32 - fix build error with outdated binutils
crypto: ccm - move cbcmac input off the stack
crypto: xts - Propagate NEED_FALLBACK bit
crypto: api - Add crypto_requires_off helper
crypto: atmel - CRYPTO_DEV_MEDIATEK should depend on HAS_DMA
crypto: atmel - CRYPTO_DEV_ATMEL_TDES and CRYPTO_DEV_ATMEL_SHA should depend on HAS_DMA
crypto: cavium - fix leak on curr if curr->head fails to be allocated
crypto: cavium - Fix couple of static checker errors
Linus Torvalds [Sat, 4 Mar 2017 05:44:35 +0000 (21:44 -0800)]
Merge branch 'work.misc' of git://git./linux/kernel/git/viro/vfs
Pull misc final vfs updates from Al Viro:
"A few unrelated patches that got beating in -next.
Everything else will have to go into the next window ;-/"
* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
hfs: fix hfs_readdir()
selftest for default_file_splice_read() infoleak
9p: constify ->d_name handling
Linus Torvalds [Sat, 4 Mar 2017 05:36:56 +0000 (21:36 -0800)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi
Pull more SCSI updates from James Bottomley:
"This is the set of stuff that didn't quite make the initial pull and a
set of fixes for stuff which did.
The new stuff is basically lpfc (nvme), qedi and aacraid. The fixes
cover a lot of previously submitted stuff, the most important of which
probably covers some of the failing irq vectors allocation and other
fallout from having the SCSI command allocated as part of the block
allocation functions"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (59 commits)
scsi: qedi: Fix memory leak in tmf response processing.
scsi: aacraid: remove redundant zero check on ret
scsi: lpfc: use proper format string for dma_addr_t
scsi: lpfc: use div_u64 for 64-bit division
scsi: mac_scsi: Fix MAC_SCSI=m option when SCSI=m
scsi: cciss: correct check map error.
scsi: qla2xxx: fix spelling mistake: "seperator" -> "separator"
scsi: aacraid: Fixed expander hotplug for SMART family
scsi: mpt3sas: switch to pci_alloc_irq_vectors
scsi: qedf: fixup compilation warning about atomic_t usage
scsi: remove scsi_execute_req_flags
scsi: merge __scsi_execute into scsi_execute
scsi: simplify scsi_execute_req_flags
scsi: make the sense header argument to scsi_test_unit_ready mandatory
scsi: sd: improve TUR handling in sd_check_events
scsi: always zero sshdr in scsi_normalize_sense
scsi: scsi_dh_emc: return success in clariion_std_inquiry()
scsi: fix memory leak of sdpk on when gd fails to allocate
scsi: sd: make sd_devt_release() static
scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.
...
WANG Cong [Fri, 3 Mar 2017 20:21:14 +0000 (12:21 -0800)]
strparser: destroy workqueue on module exit
Fixes:
43a0c6751a32 ("strparser: Stream parser for messages")
Cc: Tom Herbert <tom@herbertland.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>