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2016-01-21Merge tag 'pci-v4.5-changes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "PCI changes for the v4.5 merge window: Enumeration: - Simplify config space size computation (Bjorn Helgaas) - Avoid iterating through ROM outside the resource window (Edward O'Callaghan) - Support PCIe devices with short cfg_size (Jason S. McMullan) - Add Netronome vendor and device IDs (Jason S. McMullan) - Limit config space size for Netronome NFP6000 family (Jason S. McMullan) - Add Netronome NFP4000 PF device ID (Simon Horman) - Limit config space size for Netronome NFP4000 (Simon Horman) - Print warnings for all invalid expansion ROM headers (Vladis Dronov) Resource management: - Fix minimum allocation address overwrite (Christoph Biedl) PCI device hotplug: - acpiphp_ibm: Fix null dereferences on null ibm_slot (Colin Ian King) - pciehp: Always protect pciehp_disable_slot() with hotplug mutex (Guenter Roeck) - shpchp: Constify hpc_ops structure (Julia Lawall) - ibmphp: Remove unneeded NULL test (Julia Lawall) Power management: - Make ASPM sysfs link_state_store() consistent with link_state_show() (Andy Lutomirski) Virtualization - Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183 (Tim Sander) MSI: - Remove empty pci_msi_init_pci_dev() (Bjorn Helgaas) - Mark PCIe/PCI (MSI) IRQ cascade handlers as IRQF_NO_THREAD (Grygorii Strashko) - Initialize MSI capability for all architectures (Guilherme G. Piccoli) - Relax msi_domain_alloc() to support parentless MSI irqdomains (Liu Jiang) ARM Versatile host bridge driver: - Remove unused pci_sys_data structures (Lorenzo Pieralisi) Broadcom iProc host bridge driver: - Hide CONFIG_PCIE_IPROC (Arnd Bergmann) - Do not use 0x in front of %pap (Dmitry V. Krivenok) - Update iProc PCIe device tree binding (Ray Jui) - Add PAXC interface support (Ray Jui) - Add iProc PCIe MSI device tree binding (Ray Jui) - Add iProc PCIe MSI support (Ray Jui) Freescale i.MX6 host bridge driver: - Use gpio_set_value_cansleep() (Fabio Estevam) - Add support for active-low reset GPIO (Petr Štetiar) HiSilicon host bridge driver: - Add support for HiSilicon Hip06 PCIe host controllers (Gabriele Paoloni) Intel VMD host bridge driver: - Export irq_domain_set_info() for module use (Keith Busch) - x86/PCI: Allow DMA ops specific to a PCI domain (Keith Busch) - Use 32 bit PCI domain numbers (Keith Busch) - Add driver for Intel Volume Management Device (VMD) (Keith Busch) Qualcomm host bridge driver: - Document PCIe devicetree bindings (Stanimir Varbanov) - Add Qualcomm PCIe controller driver (Stanimir Varbanov) - dts: apq8064: add PCIe devicetree node (Stanimir Varbanov) - dts: ifc6410: enable PCIe DT node for this board (Stanimir Varbanov) Renesas R-Car host bridge driver: - Add support for R-Car H3 to pcie-rcar (Harunobu Kurokawa) - Allow DT to override default window settings (Phil Edworthy) - Convert to DT resource parsing API (Phil Edworthy) - Revert "PCI: rcar: Build pcie-rcar.c only on ARM" (Phil Edworthy) - Remove unused pci_sys_data struct from pcie-rcar (Phil Edworthy) - Add runtime PM support to pcie-rcar (Phil Edworthy) - Add Gen2 PHY setup to pcie-rcar (Phil Edworthy) - Add gen2 fallback compatibility string for pci-rcar-gen2 (Simon Horman) - Add gen2 fallback compatibility string for pcie-rcar (Simon Horman) Synopsys DesignWare host bridge driver: - Simplify control flow (Bjorn Helgaas) - Make config accessor override checking symmetric (Bjorn Helgaas) - Ensure ATU is enabled before IO/conf space accesses (Stanimir Varbanov) Miscellaneous: - Add of_pci_get_host_bridge_resources() stub (Arnd Bergmann) - Check for PCI_HEADER_TYPE_BRIDGE equality, not bitmask (Bjorn Helgaas) - Fix all whitespace issues (Bogicevic Sasa) - x86/PCI: Simplify pci_bios_{read,write} (Geliang Tang) - Use to_pci_dev() instead of open-coding it (Geliang Tang) - Use kobj_to_dev() instead of open-coding it (Geliang Tang) - Use list_for_each_entry() to simplify code (Geliang Tang) - Fix typos in <linux/msi.h> (Thomas Petazzoni) - x86/PCI: Clarify AMD Fam10h config access restrictions comment (Tomasz Nowicki)" * tag 'pci-v4.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (58 commits) PCI: Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183 PCI: Limit config space size for Netronome NFP4000 PCI: Add Netronome NFP4000 PF device ID x86/PCI: Add driver for Intel Volume Management Device (VMD) PCI/AER: Use 32 bit PCI domain numbers x86/PCI: Allow DMA ops specific to a PCI domain irqdomain: Export irq_domain_set_info() for module use PCI: host: Add of_pci_get_host_bridge_resources() stub genirq/MSI: Relax msi_domain_alloc() to support parentless MSI irqdomains PCI: rcar: Add Gen2 PHY setup to pcie-rcar PCI: rcar: Add runtime PM support to pcie-rcar PCI: designware: Make config accessor override checking symmetric PCI: ibmphp: Remove unneeded NULL test ARM: dts: ifc6410: enable PCIe DT node for this board ARM: dts: apq8064: add PCIe devicetree node PCI: hotplug: Use list_for_each_entry() to simplify code PCI: rcar: Remove unused pci_sys_data struct from pcie-rcar PCI: hisi: Add support for HiSilicon Hip06 PCIe host controllers PCI: Avoid iterating through memory outside the resource window PCI: acpiphp_ibm: Fix null dereferences on null ibm_slot ...
2016-01-20Merge branch 'pci/trivial' into nextBjorn Helgaas
* pci/trivial: PCI: shpchp: Constify hpc_ops structure PCI: Use kobj_to_dev() instead of open-coding it PCI: Use to_pci_dev() instead of open-coding it PCI: Fix all whitespace issues PCI/MSI: Fix typos in <linux/msi.h>
2016-01-20Merge branches 'pci/iommu' and 'pci/misc' into nextBjorn Helgaas
* pci/iommu: PCI: Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183 * pci/misc: PCI: Limit config space size for Netronome NFP4000 PCI: Add Netronome NFP4000 PF device ID
2016-01-20PCI: Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183Tim Sander
Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183. Signed-off-by: Tim Sander <tim@krieglstein.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Alex Williamson <alex.williamson@redhat.com>
2016-01-17Merge tag 'sound-4.5-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "We've had quite busy weeks in this cycle. Looking at ALSA core, the significant changes are a few fixes wrt timer and sequencer ioctls that have been revealed by fuzzer recently. Other than that, ASoC core got a few updates about DAI link handling, but these are rather straightforward refactoring. In drivers scene, ASoC received quite lots of new drivers in addition to bunch of updates for still ongoing Intel Skylake support and topology API. HD-audio gained a new HDMI/DP hotplug notification via component. FireWire got a pile of code refactoring/updates with SCS.1x driver integration. More highlights are shown below. [ NOTE: this contains also many commits for DRM. This is due to the pull of drm stable branch into sound tree, as the base of i915 audio component work for HD-audio. The highlights below don't contain these DRM changes, as these are supposed to be pulled via drm tree in anyway sooner or later. ] Core: - Handful fixes to harden ALSA timer and sequencer ioctls against races reported by syzkaller fuzzer - Irq description string can be unique to each card; only for HD-audio for now ASoC: - Conversion of the array of DAI links to a list for supporting dynamically adding and removing DAI links - Topology API enhancements to make everything more component based and being able to specify PCM links via topology - Some more fixes for the topology code, though it is still not final and ready for enabling in production; we really need to get to the point where that can be done - A pile of changes for Intel SkyLake drivers which hopefully deliver some useful initial functionality for systems with this chipset, though there is more work still to come - Lots of new features and cleanups for the Renesas drivers - ANC support for WM5110 - New drivers: Imagination Technologies IPs, Atmel class D speaker, Cirrus CS47L24 and WM1831, Dialog DA7128, Realtek RT5659 and RT56156, Rockchip RK3036, TI PC3168A, and AMD ACP - Rename PCM1792a driver to be generic pcm179x HD-Audio: - Use audio component for i915 HDMI/DP hotplug handling - On-demand binding with i915 driver - bdl_pos_adj parameter adjustment for Baytrail controllers - Enable power_save_node for CX20722; this shouldn't lead to regression, hopefully - Kabylake HDMI/DP codec support - Quirks for Lenovo E50-80, Dell Latitude E-series, and other Dell machines - A few code refactoring FireWire: - Lots of code cleanup and refactoring - Integrate the support of SCS.1x devices into snd-oxfw driver; snd-scs1x driver is obsoleted USB-audio: - Fix possible NULL dereference at disconnection - A regression fix for Native Instruments devices Misc: - A few code cleanups of fm801 driver" * tag 'sound-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (722 commits) ALSA: timer: Code cleanup ALSA: timer: Harden slave timer list handling ALSA: hda - Add fixup for Dell Latitidue E6540 ALSA: timer: Fix race among timer ioctls ALSA: hda - add codec support for Kabylake display audio codec ALSA: timer: Fix double unlink of active_list ALSA: usb-audio: Fix mixer ctl regression of Native Instrument devices ALSA: hda - fix the headset mic detection problem for a Dell laptop ALSA: hda - Fix white noise on Dell Latitude E5550 ALSA: hda_intel: add card number to irq description ALSA: seq: Fix race at timer setup and close ALSA: seq: Fix missing NULL check at remove_events ioctl ALSA: usb-audio: Avoid calling usb_autopm_put_interface() at disconnect ASoC: hdac_hdmi: remove unused hdac_hdmi_query_pin_connlist ASoC: AMD: Add missing include file ALSA: hda - Fixup inverted internal mic for Lenovo E50-80 ALSA: usb: Add native DSD support for Oppo HA-1 ASoC: Make aux_dev more like a generic component ASoC: bcm2835: cleanup includes by ordering them alphabetically ASoC: AMD: Manage ACP 2.x SRAM banks power ...
2016-01-15PCI: Limit config space size for Netronome NFP4000Simon Horman
Like the NFP6000, the NFP4000 as an erratum where reading/writing to PCI config space addresses above 0x600 can cause the NFP to generate PCIe completion timeouts. Limit the NFP4000's PF's config space size to 0x600 bytes as is already done for the NFP6000. The NFP4000's VF is 0x6004 (PCI_DEVICE_ID_NETRONOME_NFP6000_VF), the same device ID as the NFP6000's VF. Thus, its config space is already limited by the existing use of quirk_nfp6000(). Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-15Merge branch 'pci/host-vmd' into nextBjorn Helgaas
* pci/host-vmd: x86/PCI: Add driver for Intel Volume Management Device (VMD) PCI/AER: Use 32 bit PCI domain numbers x86/PCI: Allow DMA ops specific to a PCI domain irqdomain: Export irq_domain_set_info() for module use genirq/MSI: Relax msi_domain_alloc() to support parentless MSI irqdomains
2016-01-15PCI/AER: Use 32 bit PCI domain numbersKeith Busch
The Intel Volume Management Device (VMD) supports 32-bit domain numbers. To accommodate this, use u32 instead of u16 to store domain numbers. [bhelgaas: changelog] Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-15Merge branches 'pci/hotplug' and 'pci/resource' into nextBjorn Helgaas
* pci/hotplug: PCI: ibmphp: Remove unneeded NULL test PCI: hotplug: Use list_for_each_entry() to simplify code PCI: acpiphp_ibm: Fix null dereferences on null ibm_slot * pci/resource: PCI: Avoid iterating through memory outside the resource window PCI: Fix minimum allocation address overwrite
2016-01-15Merge branches 'pci/host', 'pci/host-designware', 'pci/host-hisi', ↵Bjorn Helgaas
'pci/host-qcom' and 'pci/host-rcar' into next * pci/host: PCI: host: Add of_pci_get_host_bridge_resources() stub PCI: host: Mark PCIe/PCI (MSI) IRQ cascade handlers as IRQF_NO_THREAD * pci/host-designware: PCI: designware: Make config accessor override checking symmetric PCI: designware: Simplify control flow * pci/host-hisi: PCI: hisi: Add support for HiSilicon Hip06 PCIe host controllers * pci/host-qcom: ARM: dts: ifc6410: enable PCIe DT node for this board ARM: dts: apq8064: add PCIe devicetree node PCI: qcom: Add Qualcomm PCIe controller driver PCI: qcom: Document PCIe devicetree bindings PCI: designware: Ensure ATU is enabled before IO/conf space accesses * pci/host-rcar: PCI: rcar: Add Gen2 PHY setup to pcie-rcar PCI: rcar: Add runtime PM support to pcie-rcar PCI: rcar: Remove unused pci_sys_data struct from pcie-rcar
2016-01-13Merge tag 'pm+acpi-4.5-rc1-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull oower management and ACPI updates from Rafael Wysocki: "As far as the number of commits goes, ACPICA takes the lead this time, followed by cpufreq and the device properties framework changes. The most significant new feature is the debugfs-based interface to the ACPICA's AML debugger added in the previous cycle and a new user space tool for accessing it. On the cpufreq front, the core is updated to handle governors more efficiently, particularly on systems where a single cpufreq policy object is shared between multiple CPUs, and there are quite a few changes in drivers (intel_pstate, cpufreq-dt etc). The device properties framework is updated to handle built-in (ie included in the kernel itself) device properties better, among other things by adding a fallback mechanism that will allow drivers to provide default properties to be used in case the plaform firmware doesn't provide the properties expected by them. The Operating Performance Points (OPP) framework gets new DT bindings and debugfs support. A new cpufreq driver for ST platforms is added and the ACPI driver for AMD SoCs will now support the APM X-Gene ACPI I2C device. The rest is mostly fixes and cleanups all over. Specifics: - Add a debugfs-based interface for interacting with the ACPICA's AML debugger introduced in the previous cycle and a new user space tool for that, fix some bugs related to the AML debugger and clean up the code in question (Lv Zheng, Dan Carpenter, Colin Ian King, Markus Elfring). - Update ACPICA to upstream revision 20151218 including a number of fixes and cleanups in the ACPICA core (Bob Moore, Lv Zheng, Labbe Corentin, Prarit Bhargava, Colin Ian King, David E Box, Rafael Wysocki). In particular, the previously added erroneous support for the _SUB object is dropped, the concatenate operator will support all ACPI objects now, the Debug Object handling is improved, the SuperName handling of parameters being control methods is fixed, the ObjectType operator handling is updated to follow ACPI 5.0A and the handling of CondRefOf and RefOf is updated accordingly, module- level code will be executed after loading each ACPI table now (instead of being run once after all tables containing AML have been loaded), the Operation Region handlers management is updated to fix some reported problems and a the ACPICA code in the kernel is more in line with the upstream now. - Update the ACPI backlight driver to provide information on whether or not it will generate key-presses for brightness change hotkeys and update some platform drivers (dell-wmi, thinkpad_acpi) to use that information to avoid sending double key-events to users pace for these, add new ACPI backlight quirks (Hans de Goede, Aaron Lu, Adrien Schildknecht). - Improve the ACPI handling of interrupt GPIOs (Christophe Ricard). - Fix the handling of the list of device IDs of device objects found in the ACPI namespace and add a helper for checking if there is a device object for a given device ID (Lukas Wunner). - Change the logic in the ACPI namespace scanning code to create struct acpi_device objects for all ACPI device objects found in the namespace even if _STA fails for them which helps to avoid device enumeration problems on Microsoft Surface 3 (Aaron Lu). - Add support for the APM X-Gene ACPI I2C device to the ACPI driver for AMD SoCs (Loc Ho). - Fix the long-standing issue with the DMA controller on Intel SoCs where ACPI tables have no power management support for the DMA controller itself, but it can be powered off automatically when the last (other) device on the SoC is powered off via ACPI and clean up the ACPI driver for Intel SoCs (acpi-lpss) after previous attempts to fix that problem (Andy Shevchenko). - Assorted ACPI fixes and cleanups (Andy Lutomirski, Colin Ian King, Javier Martinez Canillas, Ken Xue, Mathias Krause, Rafael Wysocki, Sinan Kaya). - Update the device properties framework for better handling of built-in properties, add support for built-in properties to the platform bus type, update the MFD subsystem's handling of device properties and add support for passing default configuration data as device properties to the intel-lpss MFD drivers, convert the designware I2C driver to use the unified device properties API and add a fallback mechanism for using default built-in properties if the platform firmware fails to provide the properties as expected by drivers (Andy Shevchenko, Mika Westerberg, Heikki Krogerus, Andrew Morton). - Add new Device Tree bindings to the Operating Performance Points (OPP) framework and update the exynos4412 DT binding accordingly, introduce debugfs support for the OPP framework (Viresh Kumar, Bartlomiej Zolnierkiewicz). - Migrate the mt8173 cpufreq driver to the new OPP bindings (Pi-Cheng Chen). - Update the cpufreq core to make the handling of governors more efficient, especially on systems where policy objects are shared between multiple CPUs (Viresh Kumar, Rafael Wysocki). - Fix cpufreq governor handling on configurations with CONFIG_HZ_PERIODIC set (Chen Yu). - Clean up the cpufreq core code related to the boost sysfs knob support and update the ACPI cpufreq driver accordingly (Rafael Wysocki). - Add a new cpufreq driver for ST platforms and corresponding Device Tree bindings (Lee Jones). - Update the intel_pstate driver to allow the P-state selection algorithm used by it to depend on the CPU ID of the processor it is running on, make it use a special P-state selection algorithm (with an IO wait time compensation tweak) on Atom CPUs based on the Airmont and Silvermont cores so as to reduce their energy consumption and improve intel_pstate documentation (Philippe Longepe, Srinivas Pandruvada). - Update the cpufreq-dt driver to support registering cooling devices that use the (P * V^2 * f) dynamic power draw formula where V is the voltage, f is the frequency and P is a constant coefficient provided by Device Tree and update the arm_big_little cpufreq driver to use that support (Punit Agrawal). - Assorted cpufreq driver (cpufreq-dt, qoriq, pcc-cpufreq, blackfin-cpufreq) updates (Andrzej Hajda, Hongtao Jia, Jacob Tanenbaum, Markus Elfring). - cpuidle core tweaks related to polling and measured_us calculation (Rik van Riel). - Removal of modularity from a few cpuidle drivers (clps711x, ux500, exynos) that cannot be built as modules in practice (Paul Gortmaker). - PM core update to prevent devices from being probed during system suspend/resume which is generally problematic and may lead to inconsistent behavior (Grygorii Strashko). - Assorted updates of the PM core and related code (Julia Lawall, Manuel Pégourié-Gonnard, Maruthi Bayyavarapu, Rafael Wysocki, Ulf Hansson). - PNP bus type updates (Christophe Le Roy, Heiner Kallweit). - PCI PM code cleanups (Jarkko Nikula, Julia Lawall). - cpupower tool updates (Jacob Tanenbaum, Thomas Renninger)" * tag 'pm+acpi-4.5-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (177 commits) PM / clk: don't leave clocks enabled when driver not bound i2c: dw: Add APM X-Gene ACPI I2C device support ACPI / APD: Add APM X-Gene ACPI I2C device support ACPI / LPSS: change 'does not have' to 'has' in comment Revert "dmaengine: dw: platform: provide platform data for Intel" dmaengine: dw: return immediately from IRQ when DMA isn't in use dmaengine: dw: platform: power on device on shutdown ACPI / LPSS: override power state for LPSS DMA device PM / OPP: Use snprintf() instead of sprintf() Documentation: cpufreq: intel_pstate: enhance documentation ACPI, PCI, irq: remove redundant check for null string pointer ACPI / video: driver must be registered before checking for keypresses cpufreq-dt: fix handling regulator_get_voltage() result cpufreq: governor: Fix negative idle_time when configured with CONFIG_HZ_PERIODIC PM / sleep: Add support for read-only sysfs attributes ACPI: Fix white space in a structure definition ACPI / SBS: fix inconsistent indenting inside if statement PNP: respect PNP_DRIVER_RES_DO_NOT_CHANGE when detaching ACPI / PNP: constify device IDs ACPI / PCI: Simplify acpi_penalize_isa_irq() ...
2016-01-12Merge branch 'irq-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq updates from Thomas Gleixner: "The irq department provides: - Support for MSI to wire bridges and a first user of it - More ACPI support for ARM/GIC - A new TS-4800 interrupt controller driver - RCU based free of interrupt descriptors to support the upcoming Intel VMD technology without introducing a locking nightmare - The usual pile of fixes and updates to drivers and core code" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits) irqchip/omap-intc: Add support for spurious irq handling irqchip/zevio: Use irq_data_get_chip_type() helper irqchip/omap-intc: Remove duplicate setup for IRQ chip type handler irqchip/ts4800: Add TS-4800 interrupt controller irqchip/ts4800: Add documentation for TS-4800 interrupt controller irq/platform-MSI: Increase the maximum MSIs the MSI framework can support irqchip/gicv2m: Miscellaneous fixes for v2m resources and SPI ranges irqchip/bcm2836: Make code more readable irqchip/bcm2836: Tolerate IRQs while no flag is set in ISR irqchip/bcm2836: Add SMP support for the 2836 irqchip/bcm2836: Fix initialization of the LOCAL_IRQ_CNT timers irqchip/gic-v2m: acpi: Introducing GICv2m ACPI support irqchip/gic-v2m: Refactor to prepare for ACPI support irqdomain: Introduce is_fwnode_irqchip helper acpi: pci: Setup MSI domain for ACPI based pci devices genirq/msi: Export functions to allow MSI domains in modules irqchip/mbigen: Implement the mbigen irq chip operation functions irqchip/mbigen: Create irq domain for each mbigen device irqchip/mgigen: Add platform device driver for mbigen device dt-bindings: Documents the mbigen bindings ...
2016-01-12Merge branches 'pm-pci' and 'pm-core'Rafael J. Wysocki
* pm-pci: PCI / PM: Fix small typo in documentation PCI / PM: constify pci_platform_pm_ops structure * pm-core: PM / core: fix typo in documentation PM / runtime: Add new helper for conditional usage count incrementation MAINTAINERS: Add an entry for the PM core PM / runtime: Re-init runtime PM states at probe error and driver unbind PM / sleep: prohibit devices probing during suspend/hibernation
2016-01-11PCI: rcar: Add Gen2 PHY setup to pcie-rcarPhil Edworthy
For PCIe compliance, the PHY registers need setting as per the manual. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
2016-01-11PCI: rcar: Add runtime PM support to pcie-rcarPhil Edworthy
If runtime PM is enabled in the kernel config, simply enable the clocks once during probe. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
2016-01-11PCI: designware: Make config accessor override checking symmetricBjorn Helgaas
Drivers based on the DesignWare core can override the config read accessors by supplying rd_own_conf() and rd_other_conf() function pointers. dw_pcie_rd_conf() calls dw_pcie_rd_own_conf() (for accesses to the root bus) or dw_pcie_rd_other_conf(): dw_pcie_rd_conf dw_pcie_rd_own_conf # if on root bus dw_pcie_rd_other_conf # if not on root bus Previously we checked for rd_other_conf() directly in dw_pcie_rd_conf(), but we checked for rd_own_conf() in dw_pcie_rd_own_conf(). Check for rd_other_conf() in dw_pcie_rd_other_conf() to make this symmetric with the rd_own_conf() checking, and similarly for the write path. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Pratyush Anand <pratyush.anand@gmail.com>
2016-01-11PCI: ibmphp: Remove unneeded NULL testJulia Lawall
Remove unneeded NULL test. The index variable of list_for_each_entry is never NULL, as it is the structure that contains the list pointer. Generated by: scripts/coccinelle/iterators/itnull.cocci Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Geliang Tang <geliangtang@163.com>
2016-01-10PCI: hotplug: Use list_for_each_entry() to simplify codeGeliang Tang
Use list_for_each_entry() instead of list_for_each() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-09Merge tag 'pci-v4.4-fixes-4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixlet from Bjorn Helgaas: "This marks the TI DRA7xx host bridge driver as broken. Apparently it has never worked without some additional out-of-tree code, so I'm going to mark it broken now and remove it completely next cycle unless it's fixed" * tag 'pci-v4.4-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: dra7xx: Mark driver as broken
2016-01-08PCI: rcar: Remove unused pci_sys_data struct from pcie-rcarPhil Edworthy
The pci_sys_data struct was previously used by pci_common_init_dev() and by the ARM pcibios_align_resource(), but recent commits removed those uses: cbce7900598c ("PCI: designware: Make driver arch-agnostic") b3a72384fe29 ("ARM/PCI: Replace pci_sys_data->align_resource with global function pointer") cbce7900598c removed the use of pci_common_init_dev() by DesignWare drivers, including pcie-rcar.c, and b3a72384fe29 removed the use of struct pci_sys_data by the ARM pcibios_align_resource(). Remove struct pci_sys_data from pcie-rcar.c. [bhelgaas: changelog] Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-08PCI: hisi: Add support for HiSilicon Hip06 PCIe host controllersGabriele Paoloni
Add support for the HiSilicon Hip06 SoC. Documentation has been updated to include Hip06. Add Gabriele Paoloni as maintainer of the driver. Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
2016-01-08PCI: Avoid iterating through memory outside the resource windowEdward O'Callaghan
If the 'image' pointer has been advanced more than 'size', we've already iterated through memory outside the resource window. We have zero control over whatever we find in the option ROM, if it's even an option ROM and not just an accident of random data just happening to look like an option ROM. Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-08PCI: acpiphp_ibm: Fix null dereferences on null ibm_slotColin Ian King
ibm_slot_from_id() can return null if the des header signature is not "aPCI" or if the kmalloc() for the return ACPI descriptor fails, causing potential null pointer dereferences on the return null descriptor. Handle the null case with appropriate check and error return. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-08PCI: shpchp: Constify hpc_ops structureJulia Lawall
The hpc_ops structure is never modified, so declare it as const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-08PCI: Use kobj_to_dev() instead of open-coding itGeliang Tang
Use kobj_to_dev() instead of open-coding it. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-08PCI: Use to_pci_dev() instead of open-coding itGeliang Tang
Use to_pci_dev() instead of open-coding it. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-08PCI: Fix all whitespace issuesBogicevic Sasa
Fix all whitespace issues (missing or needed whitespace) in all files in drivers/pci. Code is compiled with allyesconfig before and after code changes and objects are recorded and checked with objdiff and they are not changed after this commit. Signed-off-by: Bogicevic Sasa <brutallesale@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-08PCI: dra7xx: Mark driver as brokenRichard Cochran
Mark the dra7xx PCI host driver as broken. This driver was first merged in v3.17 and has never worked. Although the driver compiles just fine, it is missing an essential device reset. If the driver is included, the kernel locks up hard shortly after booting, before any console output appears. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-07Merge branches 'pci/host-generic', 'pci/host-imx6', 'pci/host-iproc' and ↵Bjorn Helgaas
'pci/host-rcar' into next * pci/host-generic: PCI: generic,versatile: Remove unused pci_sys_data structures * pci/host-imx6: PCI: imx6: Add support for active-low reset GPIO PCI: imx6: Use gpio_set_value_cansleep() * pci/host-iproc: PCI: iproc: Add iProc PCIe MSI support PCI: iproc: Add iProc PCIe MSI device tree binding PCI: iproc: Add PAXC interface support PCI: iproc: Update iProc PCIe device tree binding PCI: iproc: Do not use 0x in front of %pap PCI: iproc: Hide CONFIG_PCIE_IPROC * pci/host-rcar: PCI: rcar: Add gen2 fallback compatibility string for pcie-rcar PCI: rcar: Add gen2 fallback compatibility string for pci-rcar-gen2 PCI: rcar: Add support for R-Car H3 to pcie-rcar Revert "PCI: rcar: Build pcie-rcar.c only on ARM" PCI: rcar: Convert to DT resource parsing API PCI: rcar: Allow DT to override default window settings
2016-01-07PCI: iproc: Add iProc PCIe MSI supportRay Jui
Add PCIe MSI support for both PAXB and PAXC interfaces on all iProc-based platforms. The iProc PCIe MSI support deploys an event queue-based implementation. Each event queue is serviced by a GIC interrupt and can support up to 64 MSI vectors. Host memory is allocated for the event queues, and each event queue consists of 64 word-sized entries. MSI data is written to the lower 16-bit of each entry, whereas the upper 16-bit of the entry is reserved for the controller for internal processing. Each event queue is tracked by a head pointer and tail pointer. Head pointer indicates the next entry in the event queue to be processed by the driver and is updated by the driver after processing is done. The controller uses the tail pointer as the next MSI data insertion point. The controller ensures MSI data is flushed to host memory before updating the tail pointer and then triggering the interrupt. MSI IRQ affinity is supported by evenly distributing the interrupts to each CPU core. MSI vector is moved from one GIC interrupt to another in order to steer to the target CPU. Therefore, the actual number of supported MSI vectors is: M * 64 / N where M denotes the number of GIC interrupts (event queues), and N denotes the number of CPU cores. This iProc event queue-based MSI support should not be used with newer platforms with integrated MSI support in the GIC (e.g., giv2m or gicv3-its). [bhelgaas: fold in Kconfig fixes from Arnd Bergmann <arnd@arndb.de>] Signed-off-by: Ray Jui <rjui@broadcom.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Anup Patel <anup.patel@broadcom.com> Reviewed-by: Vikram Prakash <vikramp@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
2016-01-06PCI: host: Mark PCIe/PCI (MSI) IRQ cascade handlers as IRQF_NO_THREADGrygorii Strashko
On -RT and if kernel is booting with "threadirqs" cmd line parameter, PCIe/PCI (MSI) IRQ cascade handlers (like dra7xx_pcie_msi_irq_handler()) will be forced threaded and, as result, will generate warnings like this: WARNING: CPU: 1 PID: 82 at kernel/irq/handle.c:150 handle_irq_event_percpu+0x14c/0x174() irq 460 handler irq_default_primary_handler+0x0/0x14 enabled interrupts Backtrace: (warn_slowpath_common) from (warn_slowpath_fmt+0x38/0x40) (warn_slowpath_fmt) from (handle_irq_event_percpu+0x14c/0x174) (handle_irq_event_percpu) from (handle_irq_event+0x84/0xb8) (handle_irq_event) from (handle_simple_irq+0x90/0x118) (handle_simple_irq) from (generic_handle_irq+0x30/0x44) (generic_handle_irq) from (dra7xx_pcie_msi_irq_handler+0x7c/0x8c) (dra7xx_pcie_msi_irq_handler) from (irq_forced_thread_fn+0x28/0x5c) (irq_forced_thread_fn) from (irq_thread+0x128/0x204) This happens because all of them invoke generic_handle_irq() from the requested handler. generic_handle_irq() grabs raw_locks and thus needs to run in raw-IRQ context. This issue was originally reproduced on TI dra7-evem, but, as was identified during discussion [1], other hosts can also suffer from this issue. Fix all them at once by marking PCIe/PCI (MSI) IRQ cascade handlers IRQF_NO_THREAD explicitly. [1] http://lkml.kernel.org/r/1448027966-21610-1-git-send-email-grygorii.strashko@ti.com [bhelgaas: add stable tag, fix typos] Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Lucas Stach <l.stach@pengutronix.de> (for imx6) CC: stable@vger.kernel.org CC: Kishon Vijay Abraham I <kishon@ti.com> CC: Jingoo Han <jingoohan1@gmail.com> CC: Kukjin Kim <kgene@kernel.org> CC: Krzysztof Kozlowski <k.kozlowski@samsung.com> CC: Richard Zhu <Richard.Zhu@freescale.com> CC: Thierry Reding <thierry.reding@gmail.com> CC: Stephen Warren <swarren@wwwdotorg.org> CC: Alexandre Courbot <gnurou@gmail.com> CC: Simon Horman <horms@verge.net.au> CC: Pratyush Anand <pratyush.anand@gmail.com> CC: Michal Simek <michal.simek@xilinx.com> CC: "Sören Brinkmann" <soren.brinkmann@xilinx.com> CC: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
2016-01-06PCI: Fix minimum allocation address overwriteChristoph Biedl
Commit 36e097a8a297 ("PCI: Split out bridge window override of minimum allocation address") claimed to do no functional changes but unfortunately did: The "min" variable is altered. At least the AVM A1 PCMCIA adapter was no longer detected, breaking ISDN operation. Use a local copy of "min" to restore the previous behaviour. [bhelgaas: avoid gcc "?:" extension for portability and readability] Fixes: 36e097a8a297 ("PCI: Split out bridge window override of minimum allocation address") Signed-off-by: Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v3.14+
2016-01-06Merge branch 'for-linus' into for-nextTakashi Iwai
Conflicts: drivers/gpu/drm/i915/intel_display.c sound/soc/intel/skylake/skl.h
2016-01-05PCI: designware: Simplify control flowBjorn Helgaas
Return values immediately when possible to simplify the control flow. No functional change intended. Folded in unused variable removal as pointed out by Fabio Estevam <fabio.estevam@nxp.com>, Arnd Bergmann <arnd@arndb.de>, and Thierry Reding <thierry.reding@gmail.com>. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Pratyush Anand <pratyush.anand@gmail.com>
2016-01-05PCI: qcom: Add Qualcomm PCIe controller driverStanimir Varbanov
The PCIe driver reuses the Designware common code for host and MSI initialization, and also programs the Qualcomm application specific registers. [bhelgaas: remove COMPILE_TEST Kconfig dependency] Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-01-05PCI: designware: Ensure ATU is enabled before IO/conf space accessesStanimir Varbanov
Read back the ATU CR2 register to ensure ATU programming is effective before any subsequent I/O or config space accesses. Without this, PCI device enumeration is unreliable. [bhelgaas: changelog, comment] Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Pratyush Anand <pratyush.anand@gmail.com>
2015-12-31Merge tag 'pci-v4.4-fixes-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI bugfix from Bjorn Helgaas: "Here's another fix for v4.4. This fixes 32-bit config reads for the HiSilicon driver. Obviously the driver is completely broken without this fix (apparently it actually was tested internally, but got broken somehow in the process of upstreaming it). Summary: HiSilicon host bridge driver Fix 32-bit config reads (Dongdong Liu)" * tag 'pci-v4.4-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: hisi: Fix hisi_pcie_cfg_read() 32-bit reads
2015-12-29Merge branch 'irq/gic-v2m-acpi' of ↵Thomas Gleixner
git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core Pull another round of GIC changes from Marc: ACPI support for GIV-v2m
2015-12-23Merge branch 'for-linus' into for-nextTakashi Iwai
Conflicts: drivers/gpu/drm/i915/intel_pm.c
2015-12-21acpi: pci: Setup MSI domain for ACPI based pci devicesSuravee Suthikulpanit
This patch introduces pci_msi_register_fwnode_provider() for irqchip to register a callback, to provide a way to determine appropriate MSI domain for a pci device. It also introduces pci_host_bridge_acpi_msi_domain(), which returns the MSI domain of the specified PCI host bridge with DOMAIN_BUS_PCI_MSI bus token. Then, it is assigned to pci device. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-12-20genirq/msi: Export functions to allow MSI domains in modulesJake Oshins
The Linux kernel already has the concept of IRQ domain, wherein a component can expose a set of IRQs which are managed by a particular interrupt controller chip or other subsystem. The PCI driver exposes the notion of an IRQ domain for Message-Signaled Interrupts (MSI) from PCI Express devices. This patch exposes the functions which are necessary for creating a MSI IRQ domain within a module. [ tglx: Split it into x86 and core irq parts ] Signed-off-by: Jake Oshins <jakeo@microsoft.com> Cc: gregkh@linuxfoundation.org Cc: kys@microsoft.com Cc: devel@linuxdriverproject.org Cc: olaf@aepfle.de Cc: apw@canonical.com Cc: vkuznets@redhat.com Cc: haiyangz@microsoft.com Cc: marc.zyngier@arm.com Cc: bhelgaas@google.com Link: http://lkml.kernel.org/r/1449769983-12948-4-git-send-email-jakeo@microsoft.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-12-11Merge branches 'pci/aspm', 'pci/hotplug', 'pci/misc' and 'pci/msi' into nextBjorn Helgaas
* pci/aspm: PCI/ASPM: Make sysfs link_state_store() consistent with link_state_show() * pci/hotplug: PCI: pciehp: Always protect pciehp_disable_slot() with hotplug mutex * pci/misc: x86/PCI: Simplify pci_bios_{read,write} PCI: Simplify config space size computation PCI: Limit config space size for Netronome NFP6000 family PCI: Add Netronome vendor and device IDs PCI: Support PCIe devices with short cfg_size x86/PCI: Clarify AMD Fam10h config access restrictions comment PCI: Print warnings for all invalid expansion ROM headers PCI: Check for PCI_HEADER_TYPE_BRIDGE equality, not bitmask * pci/msi: PCI/MSI: Remove empty pci_msi_init_pci_dev() PCI/MSI: Initialize MSI capability for all architectures
2015-12-11PCI: Simplify config space size computationBjorn Helgaas
Restructure the logic so we return the config space size as soon as we know it. This reduces indentation, removes negations, and removes gotos. No functional change. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-12-11PCI: Limit config space size for Netronome NFP6000 familyJason S. McMullan
The NFP6000 has an erratum where reading/writing to PCI config space addresses above 0x600 can cause the NFP to generate PCIe completion timeouts. Limit the NFP6000's config space size to 0x600 bytes. Signed-off-by: Jason S. McMullan <jason.mcmullan@netronome.com> [simon: edited changelog] Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-12-11PCI: Support PCIe devices with short cfg_sizeJason S. McMullan
If a device quirk modifies the pci_dev->cfg_size to be less than PCI_CFG_SPACE_EXP_SIZE (4096), but greater than PCI_CFG_SPACE_SIZE (256), the PCI sysfs interface truncates the readable size to PCI_CFG_SPACE_SIZE. Allow sysfs access to config space up to cfg_size, even if the device doesn't support the entire 4096-byte PCIe config space. Note that pci_read_config() and pci_write_config() limit access to dev->cfg_size even though pcie_config_attr contains 4096 (the maximum size). Signed-off-by: Jason S. McMullan <jason.mcmullan@netronome.com> [simon: edited changelog] Signed-off-by: Simon Horman <simon.horman@netronome.com> [bhelgaas: more changelog edits] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-12-11PCI: Print warnings for all invalid expansion ROM headersVladis Dronov
We've always validated that both bytes of the Expansion ROM signature and all four bytes of the PCI Data Structure signature (see PCI Firmware spec r3.0, sec 5.1.1), but we only printed a warning if the first byte of the ROM signature was invalid. Print warnings if *any* of those bytes are invalid. Note that we only look at these headers if we map or read the ROM. [bhelgaas: changelog, tweak printk format] Signed-off-by: Vladis Dronov <vdronov@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-12-11PCI: Check for PCI_HEADER_TYPE_BRIDGE equality, not bitmaskBjorn Helgaas
Bit 7 of the "Header Type" register indicates a multi-function device when set. Bits 0-6 contain encoded values, where 0x1 indicates a PCI-PCI bridge. It is incorrect to test this as though it were a mask. For example, while the PCI 3.0 spec only defines values 0x0, 0x1, and 0x2, it's conceivable that a future spec could define 0x3 to mean something else; then tests for "(hdr_type & 0x7f) & PCI_HEADER_TYPE_BRIDGE" would incorrectly succeed for this new 0x3 header type. Test bits 0-6 of the Header Type for equality with PCI_HEADER_TYPE_BRIDGE. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-12-09PCI: rcar: Add gen2 fallback compatibility string for pcie-rcarSimon Horman
Add fallback compatibility string for R-Car Gen 2 family. This is in keeping with the fallback scheme being adopted wherever appropriate for drivers for Renesas SoCs. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-12-09PCI: rcar: Add gen2 fallback compatibility string for pci-rcar-gen2Simon Horman
Add fallback compatibility string for R-Car Gen 2 family. This is in keeping with the fallback scheme being adopted wherever appropriate for drivers for Renesas SoCs. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rob Herring <robh@kernel.org>
2015-12-09Merge tag 'pci-v4.4-fixes-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixes from Bjorn Helgaas: "These are more fixes I'd like to have in v4.4. Several for the Altera driver added for v4.4, and one for an MSI domain problem that affects several arm64 platforms: MSI: - Only use the generic MSI layer when domain is hierarchical (Marc Zyngier) Altera host bridge driver: - Fix loop in tlp_read_packet() (Dan Carpenter) - Fix Requester ID for config accesses (Ley Foon Tan) - Check TLP completion status (Ley Foon Tan) - Fix error when INTx is 4 (Ley Foon Tan)" * tag 'pci-v4.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: altera: Fix error when INTx is 4 PCI: altera: Check TLP completion status PCI: altera: Fix Requester ID for config accesses PCI: altera: Fix loop in tlp_read_packet() PCI/MSI: Only use the generic MSI layer when domain is hierarchical