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A platform_driver does not need to set an owner, it will be populated by the
driver core.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull Xen updates from David Vrabel:
"Features and fixes:
- Add pvscsi frontend and backend drivers.
- Remove _PAGE_IOMAP PTE flag, freeing it for alternate uses.
- Try and keep memory contiguous during PV memory setup (reduces
SWIOTLB usage).
- Allow front/back drivers to use threaded irqs.
- Support large initrds in PV guests.
- Fix PVH guests in preparation for Xen 4.5"
* tag 'stable/for-linus-3.18-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (22 commits)
xen: remove DEFINE_XENBUS_DRIVER() macro
xen/xenbus: Remove BUG_ON() when error string trucated
xen/xenbus: Correct the comments for xenbus_grant_ring()
x86/xen: Set EFER.NX and EFER.SCE in PVH guests
xen: eliminate scalability issues from initrd handling
xen: sync some headers with xen tree
xen: make pvscsi frontend dependant on xenbus frontend
arm{,64}/xen: Remove "EXPERIMENTAL" in the description of the Xen options
xen-scsifront: don't deadlock if the ring becomes full
x86: remove the Xen-specific _PAGE_IOMAP PTE flag
x86/xen: do not use _PAGE_IOMAP PTE flag for I/O mappings
x86: skip check for spurious faults for non-present faults
xen/efi: Directly include needed headers
xen-scsiback: clean up a type issue in scsiback_make_tpg()
xen-scsifront: use GFP_ATOMIC under spin_lock
MAINTAINERS: Add xen pvscsi maintainer
xen-scsiback: Add Xen PV SCSI backend driver
xen-scsifront: Add Xen PV SCSI frontend driver
xen: Add Xen pvSCSI protocol description
xen/events: support threaded irqs for interdomain event channels
...
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The DEFINE_XENBUS_DRIVER() macro looks a bit weird and causes sparse
errors.
Replace the uses with standard structure definitions instead. This is
similar to pci and usb device registration.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
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Pull VFIO updates from Alex Williamson:
- Nested IOMMU extension to type1 (Will Deacon)
- Restore MSIx message before enabling (Gavin Shan)
- Fix remove path locking (Alex Williamson)
* tag 'vfio-v3.18-rc1' of git://github.com/awilliam/linux-vfio:
vfio-pci: Fix remove path locking
drivers/vfio: Export vfio_spapr_iommu_eeh_ioctl() with GPL
vfio/pci: Restore MSIx message prior to enabling
PCI: Export MSI message relevant functions
vfio/iommu_type1: add new VFIO_TYPE1_NESTING_IOMMU IOMMU type
iommu: introduce domain attribute for nesting IOMMUs
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The patch exports 2 MSI message relevant functions, which will be
used by VFIO PCI driver. The VFIO PCI driver would be built as
a module.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
"Features-wise, to me the most important this time is a rework of
wakeup interrupts handling in the core that makes them work
consistently across all of the available sleep states, including
suspend-to-idle. Many thanks to Thomas Gleixner for his help with
this work.
Second is an update of the generic PM domains code that has been in
need of some care for quite a while. Unused code is being removed, DT
support is being added and domains are now going to be attached to
devices in bus type code in analogy with the ACPI PM domain. The
majority of work here was done by Ulf Hansson who also has been the
most active developer this time.
Apart from this we have a traditional ACPICA update, this time to
upstream version 20140828 and a few ACPI wakeup interrupts handling
patches on top of the general rework mentioned above. There also are
several cpufreq commits including renaming the cpufreq-cpu0 driver to
cpufreq-dt, as this is what implements generic DT-based cpufreq
support, and a new DT-based idle states infrastructure for cpuidle.
In addition to that, the ACPI LPSS driver is updated, ACPI support for
Apple machines is improved, a few bugs are fixed and a few cleanups
are made all over.
Finally, the Adaptive Voltage Scaling (AVS) subsystem now has a tree
maintained by Kevin Hilman that will be merged through the PM tree.
Numbers-wise, the generic PM domains update takes the lead this time
with 32 non-merge commits, second is cpufreq (15 commits) and the 3rd
place goes to the wakeup interrupts handling rework (13 commits).
Specifics:
- Rework the handling of wakeup IRQs by the IRQ core such that all of
them will be switched over to "wakeup" mode in suspend_device_irqs()
and in that mode the first interrupt will abort system suspend in
progress or wake up the system if already in suspend-to-idle (or
equivalent) without executing any interrupt handlers. Among other
things that eliminates the wakeup-related motivation to use the
IRQF_NO_SUSPEND interrupt flag with interrupts which don't really
need it and should not use it (Thomas Gleixner and Rafael Wysocki)
- Switch over ACPI to handling wakeup interrupts with the help of the
new mechanism introduced by the above IRQ core rework (Rafael Wysocki)
- Rework the core generic PM domains code to eliminate code that's
not used, add DT support and add a generic mechanism by which
devices can be added to PM domains automatically during enumeration
(Ulf Hansson, Geert Uytterhoeven and Tomasz Figa).
- Add debugfs-based mechanics for debugging generic PM domains
(Maciej Matraszek).
- ACPICA update to upstream version 20140828. Included are updates
related to the SRAT and GTDT tables and the _PSx methods are in the
METHOD_NAME list now (Bob Moore and Hanjun Guo).
- Add _OSI("Darwin") support to the ACPI core (unfortunately, that
can't really be done in a straightforward way) to prevent
Thunderbolt from being turned off on Apple systems after boot (or
after resume from system suspend) and rework the ACPI Smart Battery
Subsystem (SBS) driver to work correctly with Apple platforms
(Matthew Garrett and Andreas Noever).
- ACPI LPSS (Low-Power Subsystem) driver update cleaning up the code,
adding support for 133MHz I2C source clock on Intel Baytrail to it
and making it avoid using UART RTS override with Auto Flow Control
(Heikki Krogerus).
- ACPI backlight updates removing the video_set_use_native_backlight
quirk which is not necessary any more, making the code check the
list of output devices returned by the _DOD method to avoid
creating acpi_video interfaces that won't work and adding a quirk
for Lenovo Ideapad Z570 (Hans de Goede, Aaron Lu and Stepan Bujnak)
- New Win8 ACPI OSI quirks for some Dell laptops (Edward Lin)
- Assorted ACPI code cleanups (Fabian Frederick, Rasmus Villemoes,
Sudip Mukherjee, Yijing Wang, and Zhang Rui)
- cpufreq core updates and cleanups (Viresh Kumar, Preeti U Murthy,
Rasmus Villemoes)
- cpufreq driver updates: cpufreq-cpu0/cpufreq-dt (driver name change
among other things), ppc-corenet, powernv (Viresh Kumar, Preeti U
Murthy, Shilpasri G Bhat, Lucas Stach)
- cpuidle support for DT-based idle states infrastructure, new ARM64
cpuidle driver, cpuidle core cleanups (Lorenzo Pieralisi, Rasmus
Villemoes)
- ARM big.LITTLE cpuidle driver updates: support for DT-based
initialization and Exynos5800 compatible string (Lorenzo Pieralisi,
Kevin Hilman)
- Rework of the test_suspend kernel command line argument and a new
trace event for console resume (Srinivas Pandruvada, Todd E Brandt)
- Second attempt to optimize swsusp_free() (hibernation core) to make
it avoid going through all PFNs which may be way too slow on some
systems (Joerg Roedel)
- devfreq updates (Paul Bolle, Punit Agrawal, Ãrjan Eide).
- rockchip-io Adaptive Voltage Scaling (AVS) driver and AVS entry
update in MAINTAINERS (Heiko Stübner, Kevin Hilman)
- PM core fix related to clock management (Geert Uytterhoeven)
- PM core's sysfs code cleanup (Johannes Berg)"
* tag 'pm+acpi-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (105 commits)
ACPI / fan: printk replacement
PM / clk: Fix crash in clocks management code if !CONFIG_PM_RUNTIME
PM / Domains: Rename cpu_data to cpuidle_data
cpufreq: cpufreq-dt: fix potential double put of cpu OF node
cpufreq: cpu0: rename driver and internals to 'cpufreq_dt'
PM / hibernate: Iterate over set bits instead of PFNs in swsusp_free()
cpufreq: ppc-corenet: remove duplicate update of cpu_data
ACPI / sleep: Rework the handling of ACPI GPE wakeup from suspend-to-idle
PM / sleep: Rename platform suspend/resume functions in suspend.c
PM / sleep: Export dpm_suspend_late/noirq() and dpm_resume_early/noirq()
ACPICA: Introduce acpi_enable_all_wakeup_gpes()
ACPICA: Clear all non-wakeup GPEs in acpi_hw_enable_wakeup_gpe_block()
ACPI / video: check _DOD list when creating backlight devices
PM / Domains: Move dev_pm_domain_attach|detach() to pm_domain.h
cpufreq: Replace strnicmp with strncasecmp
cpufreq: powernv: Set the cpus to nominal frequency during reboot/kexec
cpufreq: powernv: Set the pstate of the last hotplugged out cpu in policy->cpus to minimum
cpufreq: Allow stop CPU callback to be used by all cpufreq drivers
PM / devfreq: exynos: Enable building exynos PPMU as module
PM / devfreq: Export helper functions for drivers
...
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* pm-genirq:
PM / genirq: Document rules related to system suspend and interrupts
PCI / PM: Make PCIe PME interrupts wake up from suspend-to-idle
x86 / PM: Set IRQCHIP_SKIP_SET_WAKE for IOAPIC IRQ chip objects
genirq: Simplify wakeup mechanism
genirq: Mark wakeup sources as armed on suspend
genirq: Create helper for flow handler entry check
genirq: Distangle edge handler entry
genirq: Avoid double loop on suspend
genirq: Move MASK_ON_SUSPEND handling into suspend_device_irqs()
genirq: Make use of pm misfeature accounting
genirq: Add sanity checks for PM options on shared interrupt lines
genirq: Move suspend/resume logic into irq/pm code
PM / sleep: Mechanism for aborting system suspends unconditionally
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To make PCIe PME interrupts wake up the system from suspend to idle,
make the PME driver use enable_irq_wake() on the IRQ during system
suspend (if there are any wakeup devices below the given PCIe port)
without disabling PME interrupts. This way, an interrupt will still
trigger if a wakeup event happens and the system will be woken up (or
system suspend in progress will be aborted) by means of the new
mechanics introduced previously.
This change allows Wake-on-LAN to be used for wakeup from
suspend-to-idle on my MSI Wind tesbed netbook.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"The interesting things here are:
- Turn on Config Request Retry Status Software Visibility. This
caused hangs last time, but we included a fix this time.
- Rework PCI device configuration to use _HPP/_HPX more aggressively
- Allow PCI devices to be put into D3cold during system suspend
- Add arm64 PCI support
- Add APM X-Gene host bridge driver
- Add TI Keystone host bridge driver
- Add Xilinx AXI host bridge driver
More detailed summary:
Enumeration
- Check Vendor ID only for Config Request Retry Status (Rajat Jain)
- Enable Config Request Retry Status when supported (Rajat Jain)
- Add generic domain handling (Catalin Marinas)
- Generate uppercase hex for modalias interface class (Ricardo Ribalda Delgado)
Resource management
- Add missing MEM_64 mask in pci_assign_unassigned_bridge_resources() (Yinghai Lu)
- Increase IBM ipr SAS Crocodile BARs to at least system page size (Douglas Lehr)
PCI device hotplug
- Prevent NULL dereference during pciehp probe (Andreas Noever)
- Move _HPP & _HPX handling into core (Bjorn Helgaas)
- Apply _HPP to PCIe devices as well as PCI (Bjorn Helgaas)
- Apply _HPP/_HPX to display devices (Bjorn Helgaas)
- Preserve SERR & PARITY settings when applying _HPP/_HPX (Bjorn Helgaas)
- Preserve MPS and MRRS settings when applying _HPP/_HPX (Bjorn Helgaas)
- Apply _HPP/_HPX to all devices, not just hot-added ones (Bjorn Helgaas)
- Fix wait time in pciehp timeout message (Yinghai Lu)
- Add more pciehp Slot Control debug output (Yinghai Lu)
- Stop disabling pciehp notifications during init (Yinghai Lu)
MSI
- Remove arch_msi_check_device() (Alexander Gordeev)
- Rename pci_msi_check_device() to pci_msi_supported() (Alexander Gordeev)
- Move D0 check into pci_msi_check_device() (Alexander Gordeev)
- Remove unused kobject from struct msi_desc (Yijing Wang)
- Remove "pos" from the struct msi_desc msi_attrib (Yijing Wang)
- Add "msi_bus" sysfs MSI/MSI-X control for endpoints (Yijing Wang)
- Use __get_cached_msi_msg() instead of get_cached_msi_msg() (Yijing Wang)
- Use __read_msi_msg() instead of read_msi_msg() (Yijing Wang)
- Use __write_msi_msg() instead of write_msi_msg() (Yijing Wang)
Power management
- Drop unused runtime PM support code for PCIe ports (Rafael J. Wysocki)
- Allow PCI devices to be put into D3cold during system suspend (Rafael J. Wysocki)
AER
- Add additional AER error strings (Gong Chen)
- Make <linux/aer.h> standalone includable (Thierry Reding)
Virtualization
- Add ACS quirk for Solarflare SFC9120 & SFC9140 (Alex Williamson)
- Add ACS quirk for Intel 10G NICs (Alex Williamson)
- Add ACS quirk for AMD A88X southbridge (Marti Raudsepp)
- Remove unused pci_find_upstream_pcie_bridge(), pci_get_dma_source() (Alex Williamson)
- Add device flag helpers (Ethan Zhao)
- Assume all Mellanox devices have broken INTx masking (Gavin Shan)
Generic host bridge driver
- Fix ioport_map() for !CONFIG_GENERIC_IOMAP (Liviu Dudau)
- Add pci_register_io_range() and pci_pio_to_address() (Liviu Dudau)
- Define PCI_IOBASE as the base of virtual PCI IO space (Liviu Dudau)
- Fix the conversion of IO ranges into IO resources (Liviu Dudau)
- Add pci_get_new_domain_nr() and of_get_pci_domain_nr() (Liviu Dudau)
- Add support for parsing PCI host bridge resources from DT (Liviu Dudau)
- Add pci_remap_iospace() to map bus I/O resources (Liviu Dudau)
- Add arm64 architectural support for PCI (Liviu Dudau)
APM X-Gene
- Add APM X-Gene PCIe driver (Tanmay Inamdar)
- Add arm64 DT APM X-Gene PCIe device tree nodes (Tanmay Inamdar)
Freescale i.MX6
- Probe in module_init(), not fs_initcall() (Lucas Stach)
- Delay enabling reference clock for SS until it stabilizes (Tim Harvey)
Marvell MVEBU
- Fix uninitialized variable in mvebu_get_tgt_attr() (Thomas Petazzoni)
NVIDIA Tegra
- Make sure the PCIe PLL is really reset (Eric Yuen)
- Add error path tegra_msi_teardown_irq() cleanup (Jisheng Zhang)
- Fix extended configuration space mapping (Peter Daifuku)
- Implement resource hierarchy (Thierry Reding)
- Clear CLKREQ# enable on port disable (Thierry Reding)
- Add Tegra124 support (Thierry Reding)
ST Microelectronics SPEAr13xx
- Pass config resource through reg property (Pratyush Anand)
Synopsys DesignWare
- Use NULL instead of false (Fabio Estevam)
- Parse bus-range property from devicetree (Lucas Stach)
- Use pci_create_root_bus() instead of pci_scan_root_bus() (Lucas Stach)
- Remove pci_assign_unassigned_resources() (Lucas Stach)
- Check private_data validity in single place (Lucas Stach)
- Setup and clear exactly one MSI at a time (Lucas Stach)
- Remove open-coded bitmap operations (Lucas Stach)
- Fix configuration base address when using 'reg' (Minghuan Lian)
- Fix IO resource end address calculation (Minghuan Lian)
- Rename get_msi_data() to get_msi_addr() (Minghuan Lian)
- Add get_msi_data() to pcie_host_ops (Minghuan Lian)
- Add support for v3.65 hardware (Murali Karicheri)
- Fold struct pcie_port_info into struct pcie_port (Pratyush Anand)
TI Keystone
- Add TI Keystone PCIe driver (Murali Karicheri)
- Limit MRSS for all downstream devices (Murali Karicheri)
- Assume controller is already in RC mode (Murali Karicheri)
- Set device ID based on SoC to support multiple ports (Murali Karicheri)
Xilinx AXI
- Add Xilinx AXI PCIe driver (Srikanth Thokala)
- Fix xilinx_pcie_assign_msi() return value test (Dan Carpenter)
Miscellaneous
- Clean up whitespace (Quentin Lambert)
- Remove assignments from "if" conditions (Quentin Lambert)
- Move PCI_VENDOR_ID_VMWARE to pci_ids.h (Francesco Ruggeri)
- x86: Mark DMI tables as initialization data (Mathias Krause)
- x86: Move __init annotation to the correct place (Mathias Krause)
- x86: Mark constants of pci_mmcfg_nvidia_mcp55() as __initconst (Mathias Krause)
- x86: Constify pci_mmcfg_probes[] array (Mathias Krause)
- x86: Mark PCI BIOS initialization code as such (Mathias Krause)
- Parenthesize PCI_DEVID and PCI_VPD_LRDT_ID parameters (Megan Kamiya)
- Remove unnecessary variable in pci_add_dynid() (Tobias Klauser)"
* tag 'pci-v3.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (109 commits)
arm64: dts: Add APM X-Gene PCIe device tree nodes
PCI: Add ACS quirk for AMD A88X southbridge devices
PCI: xgene: Add APM X-Gene PCIe driver
PCI: designware: Remove open-coded bitmap operations
PCI/MSI: Remove unnecessary temporary variable
PCI/MSI: Use __write_msi_msg() instead of write_msi_msg()
MSI/powerpc: Use __read_msi_msg() instead of read_msi_msg()
PCI/MSI: Use __get_cached_msi_msg() instead of get_cached_msi_msg()
PCI/MSI: Add "msi_bus" sysfs MSI/MSI-X control for endpoints
PCI/MSI: Remove "pos" from the struct msi_desc msi_attrib
PCI/MSI: Remove unused kobject from struct msi_desc
PCI/MSI: Rename pci_msi_check_device() to pci_msi_supported()
PCI/MSI: Move D0 check into pci_msi_check_device()
PCI/MSI: Remove arch_msi_check_device()
irqchip: armada-370-xp: Remove arch_msi_check_device()
PCI/MSI/PPC: Remove arch_msi_check_device()
arm64: Add architectural support for PCI
PCI: Add pci_remap_iospace() to map bus I/O resources
of/pci: Add support for parsing PCI host bridge resources from DT
of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr()
...
Conflicts:
arch/arm64/boot/dts/apm-storm.dtsi
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* pci/host-xgene:
arm64: dts: Add APM X-Gene PCIe device tree nodes
PCI: xgene: Add APM X-Gene PCIe driver
Conflicts:
drivers/pci/host/Kconfig
drivers/pci/host/Makefile
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Add the AppliedMicro X-Gene SOC PCIe host controller driver. The X-Gene
PCIe controller supports up to 8 lanes and GEN3 speed. The X-Gene SOC
supports up to 5 PCIe ports.
[bhelgaas: folded in MAINTAINERS and bindings updates]
Tested-by: Ming Lei <ming.lei@canonical.com>
Tested-by: Dann Frazier <dann.frazier@canonical.com>
Signed-off-by: Tanmay Inamdar <tinamdar@apm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Liviu Dudau <Liviu.Dudau@arm.com> (driver)
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* pci/virtualization:
PCI: Add ACS quirk for AMD A88X southbridge devices
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AMD has confirmed that peer-to-peer between two southbridge functions does
not occur.
Add a quirk to indicate that these functions are isolated even though they
don't have an ACS capability.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=81841
Signed-off-by: Marti Raudsepp <marti@juffo.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Joel Schopp <joel.schopp@amd.com>
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* pci/host-designware:
PCI: designware: Remove open-coded bitmap operations
PCI: designware: Setup and clear exactly one MSI at a time
Conflicts:
drivers/pci/host/pcie-designware.c
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Replace them by using the standard kernel bitmap ops. No functional
change, but makes the code a lot cleaner.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Pratyush Anand <pratyush.anand@st.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
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The setup_irq function is supposed to set up exactly one MSI IRQ. Multiple
IRQ setup is handled differently, to respect the choices made by the upper
layers.
Also only clear one MSI IRQ at a time; the PCI core will call into this
function multiple times if it has to tear down more than one MSI IRQ.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Pratyush Anand <pratyush.anand@st.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
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* pci/resource:
PCI: Add missing MEM_64 mask in pci_assign_unassigned_bridge_resources()
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In 5b28541552ef ("PCI: Restrict 64-bit prefetchable bridge windows to
64-bit resources"), we added IORESOURCE_MEM_64 to the mask in
pci_assign_unassigned_root_bus_resources(), but not to the mask in
pci_assign_unassigned_bridge_resources().
Add IORESOURCE_MEM_64 to the pci_assign_unassigned_bridge_resources() type
mask.
Fixes: 5b28541552ef ("PCI: Restrict 64-bit prefetchable bridge windows to 64-bit resources")
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v3.16+
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* pci/msi:
PCI/MSI: Remove unnecessary temporary variable
PCI/MSI: Use __write_msi_msg() instead of write_msi_msg()
MSI/powerpc: Use __read_msi_msg() instead of read_msi_msg()
PCI/MSI: Use __get_cached_msi_msg() instead of get_cached_msi_msg()
PCI/MSI: Add "msi_bus" sysfs MSI/MSI-X control for endpoints
PCI/MSI: Remove "pos" from the struct msi_desc msi_attrib
PCI/MSI: Remove unused kobject from struct msi_desc
PCI/MSI: Rename pci_msi_check_device() to pci_msi_supported()
PCI/MSI: Move D0 check into pci_msi_check_device()
PCI/MSI: Remove arch_msi_check_device()
irqchip: armada-370-xp: Remove arch_msi_check_device()
PCI/MSI/PPC: Remove arch_msi_check_device()
Conflicts:
drivers/pci/host/pcie-designware.c
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The only use of "status" is to hold a value which is immediately returned,
so just return and remove the variable directly.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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default_restore_msi_irq() already has the struct msi_desc pointer required
by __write_msi_msg(), so call it directly instead of having write_msi_msg()
look it up from the IRQ.
No functional change.
[bhelgaas: split into separate patch]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The "msi_bus" sysfs file for bridges sets a bus flag to allow or disallow
future driver requests for MSI or MSI-X. Previously, the sysfs file
existed for endpoints but did nothing.
Add "msi_bus" support for endpoints, so an administrator can prevent the
use of MSI and MSI-X for individual devices.
Note that as for bridges, these changes only affect future driver requests
for MSI or MSI-X, so drivers may need to be reloaded.
Add documentation for the "msi_bus" sysfs file.
[bhelgaas: changelog, comments, add "subordinate", add endpoint printk,
rework bus_flags setting, make bus_flags printk unconditional]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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"msi_attrib.pos" is only used for MSI (not MSI-X), and we already cache the
MSI capability offset in "dev->msi_cap".
Remove "pos" from the struct msi_attrib and use "dev->msi_cap" directly.
[bhelgaas: changelog, fix whitespace]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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After commit 1c51b50c2995 ("PCI/MSI: Export MSI mode using attributes, not
kobjects"), the kobject in struct msi_desc is unused.
Remove the unused struct kobject from struct msi_desc.
[bhelgaas: changelog]
Fixes: 1c51b50c2995 ("PCI/MSI: Export MSI mode using attributes, not kobjects")
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Rename pci_msi_check_device() to pci_msi_supported() for clarity. Note
that pci_msi_supported() returns true if MSI/MSI-X is supported, so code
like:
if (pci_msi_supported(...))
reads naturally.
[bhelgaas: changelog, split to separate patch, reverse sense]
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Both callers of pci_msi_check_device() check that the device is in D0
state, so move the check from the callers into pci_msi_check_device()
itself.
In pci_enable_msi_range(), note that pci_msi_check_device() never returns a
positive value any more, so the loop that called it until it returns zero
or negative is no longer necessary.
[bhelgaas: changelog, split to separate patch]
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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No architectures implement arch_msi_check_device() or the struct msi_chip
.check_device() method, so remove them.
Remove the "type" parameter to pci_msi_check_device() because it was only
used to call arch_msi_check_device() and is no longer needed.
[bhelgaas: changelog, split to separate patch]
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/host-generic:
arm64: Add architectural support for PCI
PCI: Add pci_remap_iospace() to map bus I/O resources
of/pci: Add support for parsing PCI host bridge resources from DT
of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr()
PCI: Add generic domain handling
of/pci: Fix the conversion of IO ranges into IO resources
of/pci: Move of_pci_range_to_resource() to of/address.c
ARM: Define PCI_IOBASE as the base of virtual PCI IO space
of/pci: Add pci_register_io_range() and pci_pio_to_address()
asm-generic/io.h: Fix ioport_map() for !CONFIG_GENERIC_IOMAP
Conflicts:
drivers/pci/host/pci-tegra.c
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Add pci_remap_iospace() to map bus I/O resources into the CPU virtual
address space. Architectures with special needs may provide their own
version, but most should be able to use this one.
This function is useful for PCI host bridge drivers that need to map the
PCI I/O resources into virtual memory space.
[bhelgaas: phys_addr description, drop temporary "err" variable]
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
CC: Arnd Bergmann <arnd@arndb.de>
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Add pci_get_new_domain_nr() to allocate a new domain number and
of_get_pci_domain_nr() to retrieve the PCI domain number of a given device
from DT. Host bridge drivers or architecture-specific code can choose to
implement their PCI domain number policy using these two functions.
Using of_get_pci_domain_nr() guarantees a stable PCI domain number on every
boot provided that all host bridge controllers are assigned a number in the
device tree using "linux,pci-domain" property. Mixing use of
pci_get_new_domain_nr() and of_get_pci_domain_nr() is not recommended as it
can lead to potentially conflicting domain numbers being assigned to root
buses behind different host bridges.
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Grant Likely <grant.likely@linaro.org>
CC: Rob Herring <robh+dt@kernel.org>
CC: Catalin Marinas <catalin.marinas@arm.com>
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The handling of PCI domains (or PCI segments in ACPI speak) is usually a
straightforward affair but its implementation is currently left to the
architectural code, with pci_domain_nr(b) querying the value of the domain
associated with bus b.
This patch introduces CONFIG_PCI_DOMAINS_GENERIC as an option that can be
selected if an architecture wants a simple implementation where the value
of the domain associated with a bus is stored in struct pci_bus.
The architectures that select CONFIG_PCI_DOMAINS_GENERIC will then have to
implement pci_bus_assign_domain_nr() as a way of setting the domain number
associated with a root bus. All child buses except the root bus will
inherit the domain_nr value from their parent.
Signed-off-by: Catalin Marinas <Catalin.Marinas@arm.com>
[Renamed pci_set_domain_nr() to pci_bus_assign_domain_nr()]
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Arnd Bergmann <arnd@arndb.de>
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The ranges property for a host bridge controller in DT describes the
mapping between the PCI bus address and the CPU physical address. The
resources framework however expects that the IO resources start at a pseudo
"port" address 0 (zero) and have a maximum size of IO_SPACE_LIMIT. The
conversion from PCI ranges to resources failed to take that into account,
returning a CPU physical address instead of a port number.
Also fix all the drivers that depend on the old behaviour by fetching the
CPU physical address based on the port number where it is being needed.
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
CC: Grant Likely <grant.likely@linaro.org>
CC: Rob Herring <robh+dt@kernel.org>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Thierry Reding <thierry.reding@gmail.com>
CC: Simon Horman <horms@verge.net.au>
CC: Catalin Marinas <catalin.marinas@arm.com>
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* pci/aer:
PCI/AER: Rename PCI_ERR_UNC_TRAIN to PCI_ERR_UNC_UND
PCI/AER: Add additional PCIe AER error strings
trace, RAS: Add additional PCIe AER error strings
trace, RAS: Replace bare numbers with #defines for PCIe AER error strings
* pci/virtualization:
PCI: Add ACS quirk for Intel 10G NICs
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Intel has verified there is no peer-to-peer between functions for the below
selection of 82598, 82599, and X520 10G NICs. These NICs lack an ACS
capability, so we're not able to determine this isolation without the help
of quirks.
Generalize the Solarflare quirk and add these Intel 10G NICs.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: John Ronciak <John.ronciak@intel.com>
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Add strings for all AER error bits defined in PCIe r3.0.
[bhelgaas: changelog, drop designated initializer change]
Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/host-designware:
PCI: designware: Add get_msi_data() to pcie_host_ops
PCI: designware: Rename get_msi_data() to get_msi_addr()
PCI: designware: Fix IO resource end address calculation
PCI: designware: Fix configuration base address when using 'reg'
PCI: designware: Use NULL instead of false
[bhelgaas: Fixup keystone for "PCI: designware: Rename get_msi_data() to
get_msi_addr()"]
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Add a struct pcie_host_ops .get_msi_data() method for platforms to return
their special MSI message data.
Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Mohit KUMAR <mohit.kumar@st.com>
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The struct pcie_host_ops .get_msi_data() method returns the MSI message
address. To accurately express its purpose, rename it to .get_msi_addr().
Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Mohit KUMAR <mohit.kumar@st.com>
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End address should be equal to start_addr + size - 1. Fix PCI IO resource
end address calculation.
Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Mohit KUMAR <mohit.kumar@st.com>
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The code has calculated cfg0_base and cfg1_base when parsing 'reg' or
'ranges' property of PCI DTS node, so remove duplicate calculation. When
using 'reg', resource cfg is not used, so this code computed an incorrect
configuration base.
Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Mohit KUMAR <mohit.kumar@st.com>
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of_get_address() expects pointers in the third and fourth parameters.
Pass NULL in order to fix the following sparse warnings:
drivers/pci/host/pcie-designware.c:433:51: warning: Using plain integer as NULL pointer
drivers/pci/host/pcie-designware.c:433:58: warning: Using plain integer as NULL pointer
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Jingoo Han <jg1.han@samsung.com>
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into next
* pci/enumeration:
PCI: Generate uppercase hex for modalias interface class
* pci/virtualization:
PCI: Add ACS quirk for Solarflare SFC9120 & SFC9140
PCI: Remove unused pci_get_dma_source()
PCI: Remove unused pci_find_upstream_pcie_bridge()
* pci/cleanup:
PCI: Remove assignment from complicated "if" conditions
PCI: Remove assignment from "if" conditions
PCI: Remove unnecessary curly braces
PCI: Add space before open parenthesis
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The modifications effectively change the value of len_tmp
in the case where the first condition is not met.
Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The following Coccinelle semantic patch was used to find and correct cases
of assignments in "if" conditions:
@@
expression var, expr;
statement S;
@@
+ var = expr;
if(
- (var = expr)
+ var
) S
Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Remove curly braces in simple "if" cases.
No functional change.
Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Add space before open parenthesis as is conventional.
No functional change.
[bhelgaas: fix a few more in ibmphp, shpchp]
Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Solarflare confirms that these devices do not allow peer-to-peer between
functions. Quirk them to allow IOMMU grouping to expose this isolation.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Robert Stonehouse <rstonehouse@solarflare.com>
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pci_get_dma_source() is unused, so remove it. We now have
dma_alias_devfn() to describe this.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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pci_find_upstream_pcie_bridge() is unused, so remove it.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Some implementations of modprobe fail to load the driver for a PCI device
automatically because the "interface" part of the modalias from the kernel
is lowercase, and the modalias from file2alias is uppercase.
The "interface" is the low-order byte of the Class Code, defined in PCI
r3.0, Appendix D. Most interface types defined in the spec do not use
alpha characters, so they won't be affected. For example, 00h, 01h, 10h,
20h, etc. are unaffected.
Print the "interface" byte of the Class Code in uppercase hex, as we
already do for the Vendor ID, Device ID, Class, etc.
[bhelgaas: changelog]
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: stable@vger.kernel.org
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