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* Merge branch 'remotes/lorenzo/pci/dwc'Bjorn Helgaas2018-08-154-9/+56
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add Kirin MSI support (Xiaowei Song) - Drop unnecessary root_bus_nr setting from exynos, imx6, keystone, armada8k, artpec6, designware-plat, histb, qcom, spear13xx (Shawn Guo) - Move link notification settings from DesignWare core to individual drivers (Gustavo Pimentel) - Add endpoint library MSI-X interfaces (Gustavo Pimentel) - Correct signature of endpoint library IRQ interfaces (Gustavo Pimentel) - Add DesignWare endpoint library MSI-X callbacks (Gustavo Pimentel) - Add endpoint library MSI-X test support (Gustavo Pimentel) * remotes/lorenzo/pci/dwc: PCI: endpoint: Add MSI set maximum restriction tools: PCI: Add MSI-X support pci_endpoint_test: Add 2 ioctl commands pci-epf-test/pci_endpoint_test: Add MSI-X support pci-epf-test/pci_endpoint_test: Use irq_type module parameter pci-epf-test/pci_endpoint_test: Cleanup PCI_ENDPOINT_TEST memspace PCI: dwc: Add legacy interrupt callback handler PCI: dwc: Rework MSI callbacks handler PCI: dwc: Add MSI-X callbacks handler PCI: Update xxx_pcie_ep_raise_irq() and pci_epc_raise_irq() signatures PCI: endpoint: Add MSI-X interfaces PCI: dwc: Fix EP link notification implementation PCI: spear13xx: Drop unnecessary root_bus_nr setting PCI: qcom: Drop unnecessary root_bus_nr setting PCI: histb: Drop unnecessary root_bus_nr setting PCI: designware-plat: Drop unnecessary root_bus_nr setting PCI: artpec6: Drop unnecessary root_bus_nr setting PCI: armada8k: Drop unnecessary root_bus_nr setting PCI: keystone: Drop unnecessary root_bus_nr setting PCI: imx6: Drop unnecessary root_bus_nr setting PCI: exynos: Drop unnecessary root_bus_nr setting PCI: kirin: Add MSI support
| * tools: PCI: Add MSI-X supportGustavo Pimentel2018-07-191-14/+22
| | | | | | | | | | | | | | | | | | | | | | | | Add MSI-X support to pcitest tool. Modify pcitest.sh script to accommodate MSI-X interrupt tests. Update documentation accordingly. Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
| * pci-epf-test/pci_endpoint_test: Add MSI-X supportGustavo Pimentel2018-07-193-6/+24
| | | | | | | | | | | | | | | | Add MSI-X support and update driver documentation accordingly. Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
| * pci-epf-test/pci_endpoint_test: Cleanup PCI_ENDPOINT_TEST memspaceGustavo Pimentel2018-07-191-4/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Cleanup PCI_ENDPOINT_TEST memspace (by moving the interrupt number away from command section). Add IRQ_TYPE register to identify the triggered ID interrupt required for the READ/WRITE/COPY tests and raise IRQ test commands. Update documentation accordingly. Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
| * PCI: endpoint: Add MSI-X interfacesGustavo Pimentel2018-07-191-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add PCI_EPC_IRQ_MSIX type. Add MSI-X callbacks signatures to the ops structure. Add sysfs interface for set/get MSI-X capability maximum number. Update documentation accordingly. Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
* | Merge branch 'pci/notes'Bjorn Helgaas2018-08-152-0/+189
|\ \ | | | | | | | | | | | | | | | | | | - Document ACPI description of PCI host bridges (Bjorn Helgaas) * pci/notes: PCI: Document ACPI description of PCI host bridges
| * | PCI: Document ACPI description of PCI host bridgesBjorn Helgaas2018-07-272-0/+189
| |/ | | | | | | | | | | | | | | Add a writeup about how PCI host bridges should be described in ACPI using PNP0A03/PNP0A08 devices, PNP0C02 devices, and the MCFG table. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Sinan Kaya <okaya@kernel.org> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* / PCI/AER: Add sysfs attributes to provide AER stats and breakdownRajat Jain2018-07-191-0/+5
|/ | | | | | | | | | | Add sysfs attributes to provide total and breakdown of the AERs seen, into different type of correctable, fatal and nonfatal errors: /sys/bus/pci/devices/<dev>/aer_dev_correctable /sys/bus/pci/devices/<dev>/aer_dev_fatal /sys/bus/pci/devices/<dev>/aer_dev_nonfatal Signed-off-by: Rajat Jain <rajatja@google.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* PCI/AER: Handle ERR_FATAL with removal and re-enumeration of devicesOza Pawandeep2018-05-171-10/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PCIe ERR_FATAL errors mean the Link is unreliable. Components on the Link may need to be reset to return to reliable operation (PCIe r4.0, sec 6.2.2). We previously handled these errors much differently depending on whether the platform supports Downstream Port Containment (DPC) (PCIe r4.0, sec 6.2.10) or not. The AER driver has historically logged the error details, called driver-supplied pci_error_handlers callbacks, and reset the Link. This reset downstream devices, but did not remove them from the PCI subsystem, re-enumerate them, or call their driver .remove() or .probe() methods. DPC is different because the hardware automatically disables the Link when it detects ERR_FATAL, which resets downstream devices. There's no opportunity for pci_error_handlers callbacks before resetting the Link. The DPC driver removes affected devices (which calls their driver .remove() methods), brings the Link back up, and re-enumerates (which calls driver .probe() methods). Align AER ERR_FATAL handling with DPC by resetting the Link in software, skipping the driver pci_error_handlers callbacks, removing the devices from the PCI subsystem, and re-enumerating. The idea is that drivers and devices should see the same behavior for ERR_FATAL events, regardless of whether they're handled by AER or DPC. Here are the basic ERR_FATAL recovery steps, showing the previous AER behavior, the AER behavior after this patch, and the DPC behavior: AER AER DPC previous new behavior -------- --- -------- Log error yes yes yes (minimal) drv.error_detected() yes no no Reset Link yes yes yes drv.mmio_enabled() yes no no drv.slot_reset() yes no no drv.resume() yes no no Remove PCI devices no yes yes (calls drv.remove()) Re-enumerate no yes yes (calls drv.probe()) N.B. With DPC, the Link reset happens before the driver .remove() calls, while with AER, the reset happens *after* the .remove() calls. The goal is to eventually do the reset before .remove() for AER as well. Signed-off-by: Oza Pawandeep <poza@codeaurora.org> [bhelgaas: changelog, squash doc patch into this, remove unused "result_data"] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Keith Busch <keith.busch@intel.com>
* PCI: Update location of pci.ids fileRandy Dunlap2018-02-221-1/+3
| | | | | | | | | Update the URL for the pci.ids file and add locations for its mirrors. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Bjorn Helgaas <helgaas@kernel.org> Cc: Martin Mares <mj@ucw.cz> Cc: Michal Vaner <vorner@vorner.cz>
* docs: update old references for DocBook from the documentationMauro Carvalho Chehab2017-05-161-1/+1
| | | | | | | | DocBook is mentioned several times at the documentation. Update the obsolete references from it at the DocBook. Acked-by: SeongJae Park <sj38.park@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* Merge tag 'pci-v4.12-changes' of ↵Linus Torvalds2017-05-097-0/+604
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: - add framework for supporting PCIe devices in Endpoint mode (Kishon Vijay Abraham I) - use non-postable PCI config space mappings when possible (Lorenzo Pieralisi) - clean up and unify mmap of PCI BARs (David Woodhouse) - export and unify Function Level Reset support (Christoph Hellwig) - avoid FLR for Intel 82579 NICs (Sasha Neftin) - add pci_request_irq() and pci_free_irq() helpers (Christoph Hellwig) - short-circuit config access failures for disconnected devices (Keith Busch) - remove D3 sleep delay when possible (Adrian Hunter) - freeze PME scan before suspending devices (Lukas Wunner) - stop disabling MSI/MSI-X in pci_device_shutdown() (Prarit Bhargava) - disable boot interrupt quirk for ASUS M2N-LR (Stefan Assmann) - add arch-specific alignment control to improve device passthrough by avoiding multiple BARs in a page (Yongji Xie) - add sysfs sriov_drivers_autoprobe to control VF driver binding (Bodong Wang) - allow slots below PCI-to-PCIe "reverse bridges" (Bjorn Helgaas) - fix crashes when unbinding host controllers that don't support removal (Brian Norris) - add driver for MicroSemi Switchtec management interface (Logan Gunthorpe) - add driver for Faraday Technology FTPCI100 host bridge (Linus Walleij) - add i.MX7D support (Andrey Smirnov) - use generic MSI support for Aardvark (Thomas Petazzoni) - make Rockchip driver modular (Brian Norris) - advertise 128-byte Read Completion Boundary support for Rockchip (Shawn Lin) - advertise PCI_EXP_LNKSTA_SLC for Rockchip root port (Shawn Lin) - convert atomic_t to refcount_t in HV driver (Elena Reshetova) - add CPU IRQ affinity in HV driver (K. Y. Srinivasan) - fix PCI bus removal in HV driver (Long Li) - add support for ThunderX2 DMA alias topology (Jayachandran C) - add ThunderX pass2.x 2nd node MCFG quirk (Tomasz Nowicki) - add ITE 8893 bridge DMA alias quirk (Jarod Wilson) - restrict Cavium ACS quirk only to CN81xx/CN83xx/CN88xx devices (Manish Jaggi) * tag 'pci-v4.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (146 commits) PCI: Don't allow unbinding host controllers that aren't prepared 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 ixgbe: Use pcie_flr() instead of duplicating it IB/hfi1: Use pcie_flr() instead of duplicating it PCI: imx6: Fix spelling mistake: "contol" -> "control" ...
| * Merge branch 'pci/virtualization' into nextBjorn Helgaas2017-04-281-0/+12
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pci/virtualization: ixgbe: Use pcie_flr() instead of duplicating it IB/hfi1: Use pcie_flr() instead of duplicating it PCI: Call pcie_flr() from reset_chelsio_generic_dev() PCI: Call pcie_flr() from reset_intel_82599_sfp_virtfn() PCI: Export pcie_flr() PCI: Add sysfs sriov_drivers_autoprobe to control VF driver binding PCI: Avoid FLR for Intel 82579 NICs Conflicts: include/linux/pci.h
| | * PCI: Add sysfs sriov_drivers_autoprobe to control VF driver bindingBodong Wang2017-04-201-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sometimes it is not desirable to bind SR-IOV VFs to drivers. This can save host side resource usage by VF instances that will be assigned to VMs. Add a new PCI sysfs interface "sriov_drivers_autoprobe" to control that from the PF. To modify it, echo 0/n/N (disable probe) or 1/y/Y (enable probe) to: /sys/bus/pci/devices/<DOMAIN:BUS:DEVICE.FUNCTION>/sriov_drivers_autoprobe Note that this must be done before enabling VFs. The change will not take effect if VFs are already enabled. Simply, one can disable VFs by setting sriov_numvfs to 0, choose whether to probe or not, and then re-enable the VFs by restoring sriov_numvfs. [bhelgaas: changelog, ABI doc] Signed-off-by: Bodong Wang <bodong@mellanox.com> Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
| * | Documentation: PCI: Add userguide for PCI endpoint test functionKishon Vijay Abraham I2017-04-282-0/+181
| | | | | | | | | | | | | | | | | | | | | 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>
| * | Documentation: PCI: Add binding documentation for pci-test endpoint functionKishon Vijay Abraham I2017-04-282-0/+19
| | | | | | | | | | | | | | | | | | | | | 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>
| * | Documentation: PCI: Add specification for the *PCI test* function deviceKishon Vijay Abraham I2017-04-112-0/+68
| | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | Documentation: PCI: Guide to use PCI endpoint configfsKishon Vijay Abraham I2017-04-112-0/+107
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | Documentation: PCI: Guide to use PCI Endpoint Core LayerKishon Vijay Abraham I2017-04-112-0/+217
| |/ | | | | | | | | | | | | | | | | 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>
* / pci-error-recovery: doc cleanupCao jin2017-03-291-6/+6
|/ | | | | | | | Include whitespace shooting; correction; typo fix; superfluous word dropping. Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* Merge tag 'docs-4.11-fixes' of git://git.lwn.net/linuxLinus Torvalds2017-03-041-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | 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
| * pcieaer doc: update the linkCao jin2017-03-031-1/+1
| | | | | | | | | | | | | | The original link is empty, replace it. Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | Merge branch 'pci/msi' into nextBjorn Helgaas2017-02-153-42/+21
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pci/msi: PCI/MSI: Update MSI/MSI-X bits in PCIEBUS-HOWTO PCI/MSI: Document pci_alloc_irq_vectors(), deprecate pci_enable_msi() PCI/MSI: Return -ENOSPC if pci_enable_msi_range() can't get enough vectors PCI/portdrv: Use pci_irq_alloc_vectors() PCI/MSI: Check that we have a legacy interrupt line before using it PCI/MSI: Remove pci_msi_domain_{alloc,free}_irqs() PCI/MSI: Remove unused pci_msi_create_default_irq_domain() PCI/MSI: Return failure when msix_setup_entries() fails PCI/MSI: Remove pci_enable_msi_{exact,range}() amd-xgbe: Update PCI support to use new IRQ functions [media] cobalt: use pci_irq_allocate_vectors() PCI/MSI: Fix msi_capability_init() kernel-doc warnings
| * | PCI/MSI: Update MSI/MSI-X bits in PCIEBUS-HOWTOChristoph Hellwig2017-02-151-26/+7
| | | | | | | | | | | | | | | | | | | | | | | | Update the MSI/MSI-X bits in PCIEBUS-HOWTO. Stop talking about low-level details that mention deprecated APIs and concentrate on what service drivers should do and why. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| * | PCI/MSI: Document pci_alloc_irq_vectors(), deprecate pci_enable_msi()Christoph Hellwig2017-02-151-12/+12
| | | | | | | | | | | | | | | | | | | | | Document pci_alloc_irq_vectors() instead of the deprecated pci_enable_msi() and pci_enable_msix() APIs. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| * | PCI/MSI: Remove pci_enable_msi_{exact,range}()Christoph Hellwig2017-01-131-4/+2
| |/ | | | | | | | | | | | | | | All multi-MSI allocations are now done through pci_irq_alloc_vectors(), so remove the old pci_enable_msi_range() and pci_enable_msi_exact() interfaces. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* / PCI/AER: Remove unused .link_reset() callbackMichael S. Tsirkin2017-02-091-21/+3
|/ | | | | | | | | | | | No hardware seems to actually call .link_reset(), and no driver implements it as more than a nop stub. Drop mentions of the callback from everywhere. It's dropped from the documentation as well, but the doc really needs to be updated to reflect reality better (e.g., on PCIe, slot reset is the link reset). This will be done in a later patch. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* Merge tag 'pci-v4.9-changes' of ↵Linus Torvalds2016-10-071-17/+9
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Summary of PCI changes for the v4.9 merge window: Enumeration: - microblaze: Add multidomain support for procfs (Bharat Kumar Gogada) Resource management: - Ignore requested alignment for PROBE_ONLY and fixed resources (Yongji Xie) - Ignore requested alignment for VF BARs (Yongji Xie) PCI device hotplug: - Make core explicitly non-modular (Paul Gortmaker) PCIe native device hotplug: - Rename pcie_isr() locals for clarity (Bjorn Helgaas) - Return IRQ_NONE when we can't read interrupt status (Bjorn Helgaas) - Remove unnecessary guard (Bjorn Helgaas) - Clean up dmesg "Slot(%s)" messages (Bjorn Helgaas) - Remove useless pciehp_get_latch_status() calls (Bjorn Helgaas) - Clear attention LED on device add (Keith Busch) - Allow exclusive userspace control of indicators (Keith Busch) - Process all hotplug events before looking for new ones (Mayurkumar Patel) - Don't re-read Slot Status when queuing hotplug event (Mayurkumar Patel) - Don't re-read Slot Status when handling surprise event (Mayurkumar Patel) - Make explicitly non-modular (Paul Gortmaker) Power management: - Afford direct-complete to devices with non-standard PM (Lukas Wunner) - Query platform firmware for device power state (Lukas Wunner) - Recognize D3cold in pci_update_current_state() (Lukas Wunner) - Avoid unnecessary resume after direct-complete (Lukas Wunner) - Make explicitly non-modular (Paul Gortmaker) Virtualization: - Mark Atheros AR9580 to avoid bus reset (Maik Broemme) - Check for pci_setup_device() failure in pci_iov_add_virtfn() (Po Liu) MSI: - Enable PCI_MSI_IRQ_DOMAIN support for ARC (Joao Pinto) AER: - Remove aerdriver.nosourceid kernel parameter (Bjorn Helgaas) - Remove aerdriver.forceload kernel parameter (Bjorn Helgaas) - Fix aer_probe() kernel-doc comment (Cao jin) - Add bus flag to skip source ID matching (Jon Derrick) - Avoid memory allocation in interrupt handling path (Jon Derrick) - Cache capability position (Keith Busch) - Make explicitly non-modular (Paul Gortmaker) - Remove duplicate AER severity translation (Tyler Baicar) - Send correct severity to calculate AER severity (Tyler Baicar) Precision Time Measurement: - Add Precision Time Measurement (PTM) support (Jonathan Yong) - Add PTM clock granularity information (Bjorn Helgaas) - Add pci_enable_ptm() for drivers to enable PTM on endpoints (Bjorn Helgaas) Generic host bridge driver: - Fix pci_remap_iospace() failure path (Lorenzo Pieralisi) - Make explicitly non-modular (Paul Gortmaker) Altera host bridge driver: - Remove redundant platform_get_resource() return value check (Bjorn Helgaas) - Poll for link training status after retraining the link (Ley Foon Tan) - Rework config accessors for use without a struct pci_bus (Ley Foon Tan) - Move retrain from fixup to altera_pcie_host_init() (Ley Foon Tan) - Make MSI explicitly non-modular (Paul Gortmaker) - Make explicitly non-modular (Paul Gortmaker) - Relax device number checking to allow SR-IOV (Po Liu) ARM Versatile host bridge driver: - Fix pci_remap_iospace() failure path (Lorenzo Pieralisi) Axis ARTPEC-6 host bridge driver: - Drop __init from artpec6_add_pcie_port() (Niklas Cassel) Freescale i.MX6 host bridge driver: - Make explicitly non-modular (Paul Gortmaker) Intel VMD host bridge driver: - Add quirk for AER to ignore source ID (Jon Derrick) - Allocate IRQ lists with correct MSI-X count (Jon Derrick) - Convert to use pci_alloc_irq_vectors() API (Jon Derrick) - Eliminate vmd_vector member from list type (Jon Derrick) - Eliminate index member from IRQ list (Jon Derrick) - Synchronize with RCU freeing MSI IRQ descs (Keith Busch) - Request userspace control of PCIe hotplug indicators (Keith Busch) - Move VMD driver to drivers/pci/host (Keith Busch) Marvell Aardvark host bridge driver: - Fix pci_remap_iospace() failure path (Lorenzo Pieralisi) - Remove redundant dev_err call in advk_pcie_probe() (Wei Yongjun) Microsoft Hyper-V host bridge driver: - Use zero-length array in struct pci_packet (Dexuan Cui) - Use pci_function_description[0] in struct definitions (Dexuan Cui) - Remove the unused 'wrk' in struct hv_pcibus_device (Dexuan Cui) - Handle vmbus_sendpacket() failure in hv_compose_msi_msg() (Dexuan Cui) - Handle hv_pci_generic_compl() error case (Dexuan Cui) - Use list_move_tail() instead of list_del() + list_add_tail() (Wei Yongjun) NVIDIA Tegra host bridge driver: - Fix pci_remap_iospace() failure path (Lorenzo Pieralisi) - Remove redundant _data suffix (Thierry Reding) - Use of_device_get_match_data() (Thierry Reding) Qualcomm host bridge driver: - Make explicitly non-modular (Paul Gortmaker) Renesas R-Car host bridge driver: - Consolidate register space lookup and ioremap (Bjorn Helgaas) - Don't disable/unprepare clocks on prepare/enable failure (Geert Uytterhoeven) - Add multi-MSI support (Grigory Kletsko) - Fix pci_remap_iospace() failure path (Lorenzo Pieralisi) - Fix some checkpatch warnings (Sergei Shtylyov) - Try increasing PCIe link speed to 5 GT/s at boot (Sergei Shtylyov) Rockchip host bridge driver: - Add DT bindings for Rockchip PCIe controller (Shawn Lin) - Add Rockchip PCIe controller support (Shawn Lin) - Improve the deassert sequence of four reset pins (Shawn Lin) - Fix wrong transmitted FTS count (Shawn Lin) - Increase the Max Credit update interval (Rajat Jain) Samsung Exynos host bridge driver: - Make explicitly non-modular (Paul Gortmaker) ST Microelectronics SPEAr13xx host bridge driver: - Make explicitly non-modular (Paul Gortmaker) Synopsys DesignWare host bridge driver: - Return data directly from dw_pcie_readl_rc() (Bjorn Helgaas) - Exchange viewport of `MEMORYs' and `CFGs/IOs' (Dong Bo) - Check LTSSM training bit before deciding link is up (Jisheng Zhang) - Move link wait definitions to .c file (Joao Pinto) - Wait for iATU enable (Joao Pinto) - Add iATU Unroll feature (Joao Pinto) - Fix pci_remap_iospace() failure path (Lorenzo Pieralisi) - Make explicitly non-modular (Paul Gortmaker) - Relax device number checking to allow SR-IOV (Po Liu) - Keep viewport fixed for IO transaction if num_viewport > 2 (Pratyush Anand) - Remove redundant platform_get_resource() return value check (Wei Yongjun) TI DRA7xx host bridge driver: - Make explicitly non-modular (Paul Gortmaker) TI Keystone host bridge driver: - Propagate request_irq() failure (Wei Yongjun) Xilinx AXI host bridge driver: - Keep both legacy and MSI interrupt domain references (Bharat Kumar Gogada) - Clear interrupt register for invalid interrupt (Bharat Kumar Gogada) - Clear correct MSI set bit (Bharat Kumar Gogada) - Dispose of MSI virtual IRQ (Bharat Kumar Gogada) - Make explicitly non-modular (Paul Gortmaker) - Relax device number checking to allow SR-IOV (Po Liu) Xilinx NWL host bridge driver: - Expand error logging (Bharat Kumar Gogada) - Enable all MSI interrupts using MSI mask (Bharat Kumar Gogada) - Make explicitly non-modular (Paul Gortmaker) Miscellaneous: - Drop CONFIG_KEXEC_CORE ifdeffery (Lukas Wunner) - portdrv: Make explicitly non-modular (Paul Gortmaker) - Make DPC explicitly non-modular (Paul Gortmaker)" * tag 'pci-v4.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (105 commits) x86/PCI: VMD: Move VMD driver to drivers/pci/host PCI: rockchip: Fix wrong transmitted FTS count PCI: rockchip: Improve the deassert sequence of four reset pins PCI: rockchip: Increase the Max Credit update interval PCI: rcar: Try increasing PCIe link speed to 5 GT/s at boot PCI/AER: Fix aer_probe() kernel-doc comment PCI: Ignore requested alignment for VF BARs PCI: Ignore requested alignment for PROBE_ONLY and fixed resources PCI: Avoid unnecessary resume after direct-complete PCI: Recognize D3cold in pci_update_current_state() PCI: Query platform firmware for device power state PCI: Afford direct-complete to devices with non-standard PM PCI/AER: Cache capability position PCI/AER: Avoid memory allocation in interrupt handling path x86/PCI: VMD: Request userspace control of PCIe hotplug indicators PCI: pciehp: Allow exclusive userspace control of indicators ACPI / APEI: Send correct severity to calculate AER severity PCI/AER: Remove duplicate AER severity translation x86/PCI: VMD: Synchronize with RCU freeing MSI IRQ descs x86/PCI: VMD: Eliminate index member from IRQ list ...
| * Merge branch 'pci/host-vmd' into nextBjorn Helgaas2016-10-051-14/+10
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pci/host-vmd: x86/PCI: VMD: Move VMD driver to drivers/pci/host x86/PCI: VMD: Synchronize with RCU freeing MSI IRQ descs x86/PCI: VMD: Eliminate index member from IRQ list x86/PCI: VMD: Eliminate vmd_vector member from list type x86/PCI: VMD: Convert to use pci_alloc_irq_vectors() API x86/PCI: VMD: Allocate IRQ lists with correct MSI-X count PCI: Use positive flags in pci_alloc_irq_vectors() PCI: Update "pci=resource_alignment" documentation Conflicts: drivers/pci/host/Kconfig drivers/pci/host/Makefile
| * | PCI/AER: Remove aerdriver.forceload kernel parameterBjorn Helgaas2016-09-141-13/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Per the PCI Firmware spec, r3.0, sec 4.5.1, on ACPI systems, the OS must not use AER unless _OSC is present and _OSC grants AER control to the OS. The aerdriver.forceload kernel parameter was a way to enable Linux AER support on ACPI systems that lack _OSC or fail to grant control the the OS. Enabling Linux AER support when the firmware doesn't want us to is a recipe for problems, e.g., the firmware might be handling AER itself. Remove the aerdriver.forceload kernel parameter and related supporting code. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| * | PCI/AER: Remove aerdriver.nosourceid kernel parameterBjorn Helgaas2016-09-141-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The aerdriver.nosourceid kernel parameter was intended for working around broken chipsets don't supply the source ID for AER events. We recently added PCI_BUS_FLAGS_NO_AERSID, which can be set by quirks for the same purpose. Remove the aerdriver.nosourceid kernel parameter. For anything other than debugging, asking users to find and use kernel parameters is a poor user experience. Instead, we should add PCI_BUS_FLAGS_NO_AERSID quirks for any hardware that needs it. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | | treewide: remove references to the now unnecessary DEFINE_PCI_DEVICE_TABLEJoe Perches2016-09-021-1/+0
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | It's been eliminated from the sources, remove it from everywhere else. Link: http://lkml.kernel.org/r/076eff466fd7edb550c25c8b25d76924ca0eba62.1472660229.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | PCI: Use positive flags in pci_alloc_irq_vectors()Christoph Hellwig2016-08-161-14/+10
|/ | | | | | | | | | | | | | | | | | Instead of passing negative flags like PCI_IRQ_NOMSI to prevent use of certain interrupt types, pass positive flags like PCI_IRQ_LEGACY, PCI_IRQ_MSI, etc., to specify the acceptable interrupt types. This is based on a number of pending driver conversions that just happend to be a whole more obvious to read this way, and given that we have no users in the tree yet it can still easily be done. I've also added a PCI_IRQ_ALL_TYPES catchall to keep the case of accepting all interrupt types very simple. [bhelgaas: changelog, fix PCI_IRQ_AFFINITY doc typo, remove mention of PCI_IRQ_NOLEGACY] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Alexander Gordeev <agordeev@redhat.com>
* PCI: Spread interrupt vectors in pci_alloc_irq_vectors()Christoph Hellwig2016-07-211-0/+4
| | | | | | | | | | | | | | | | | | Set the affinity_mask in the PCI device before allocating vectors so that the affinity can be propagated through the MSI descriptor structures to the core IRQ code. To facilitate this, new __pci_enable_msi_range() and __pci_enable_msix_range() helpers are factored out of their not prefixed variants which assigning the new IRQ affinity mask in the PCI device so that the low-level interrupt code can perform the interrupt affinity assignment and do node-local allocations. A new PCI_IRQ_NOAFFINITY flag is added to pci_alloc_irq_vectors() so that this function can also be used by drivers that don't wish to use the automatic affinity assignment. [bhelgaas: omit "else" after "return" consistently] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Alexander Gordeev <agordeev@redhat.com>
* PCI: Provide sensible IRQ vector alloc/free routinesChristoph Hellwig2016-07-211-391/+76
| | | | | | | | | | | | | Add a function to allocate and free a range of interrupt vectors, using MSI-X, MSI or legacy vectors (in that order) based on the capabilities of the underlying device and PCIe complex. Additionally a new helper is provided to get the Linux IRQ number for given device-relative vector so that the drivers don't need to allocate their own arrays to keep track of the vectors for the multi vector MSI-X case. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Alexander Gordeev <agordeev@redhat.com>
* Merge tag 'docs-for-linus' of git://git.lwn.net/linux-2.6Linus Torvalds2015-04-183-18/+9
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull documentation updates from Jonathan Corbet: "Numerous fixes, the overdue removal of the i2o docs, some new Chinese translations, and, hopefully, the README fix that will end the flow of identical patches to that file" * tag 'docs-for-linus' of git://git.lwn.net/linux-2.6: (34 commits) Documentation/memcg: update memcg/kmem status Documentation: blackfin: Makefile: Typo building issue Documentation/vm/pagemap.txt: correct location of page-types tool Documentation/memory-barriers.txt: typo fix doc: Add guest_nice column to example output of `cat /proc/stat' Documentation/kernel-parameters: Move "eagerfpu" to its right place Documentation: gpio: Update ACPI part of the document to mention _DSD docs/completion.txt: Various tweaks and corrections doc: completion: context, scope and language fixes Documentation:Update Documentation/zh_CN/arm64/memory.txt Documentation:Update Documentation/zh_CN/arm64/booting.txt Documentation: Chinese translation of arm64/legacy_instructions.txt DocBook media: fix broken EIA hyperlink Documentation: tweak the maintainers entry README: Change gzip/bzip2 to xz compression format README: Update version number reference doc:pci: Fix typo in Documentation/PCI Documentation: drm: Use '->' when describing access through pointers. Documentation: Remove mentioning of block barriers Documentation/email-clients.txt: Fix one grammar mistake, add extra info about TB ...
| * doc:pci: Fix typo in Documentation/PCIMasanari Iida2015-03-203-6/+6
| | | | | | | | | | | | | | This patch fix spelling typo in Documentation/PCI. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * MSI-HOWTO.txt: remove reference on IRQF_DISABLEDValentin Rothberg2015-03-201-12/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The IRQF_DISABLED is a NOOP and scheduled to be removed. According to Ingo Molnar in commit e58aa3d2d0cc01ad8d6f7f640a0670433f794922 (genirq: Run irq handlers with interrupts disabled), running IRQ handlers with interrupts enabled can cause stack overflows when the interrupt line of the issuing device is still active. This patch removes IRQF_DISABLED from this documentation. It was mentioned to be a solution to avoid deadlocks when a device uses multiple interrupts. As the flag is a NOOP this solution does not work anymore. Signed-off-by: Valentin Rothberg <Valentin.Rothberg@lip6.fr> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | PCI: Clarify policy for vendor IDs in pci.txtMichael S. Tsirkin2015-04-091-6/+6
|/ | | | | | | | Clarify pci.txt so it matches the "do not add new entries unless they are shared between multiple drivers" comment in include/linux/pci_ids.h. [bhelgaas: changelog, strengthen language] Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* doc: replace "practise" with "practice" in DocumentationJeremiah Mahler2014-06-191-1/+1
| | | | | | | | | | | | | | | | | | | | To keep the Documentation consistent either "practise" or "practice" should be used. Since there are 3 lines with "practise" ~/linux/Documentation$ grep -r practise * | wc -l 3 and 108 lines with "practice" ~/linux/Documentation$ grep -r practice * | wc -l 108 this patch converts "practise" to "practice". Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Merge branch 'pci/dead-code' into nextBjorn Helgaas2014-02-201-4/+0
|\ | | | | | | | | | | | | | | * pci/dead-code: PCI: Remove unused SR-IOV VF Migration support iommu/amd: Add include of <linux/irqreturn.h> mei: Add include of <linux/irqreturn.h> misc: mic: Add include of <linux/irqreturn.h>
| * PCI: Remove unused SR-IOV VF Migration supportBjorn Helgaas2014-02-191-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 74bb1bcc7dbb ("PCI: handle SR-IOV Virtual Function Migration"), removing this exported interface: pci_sriov_migration() Since pci_sriov_migration() is unused, it is impossible to schedule sriov_migration_task() or use any of the other migration infrastructure. This is based on Stephen Hemminger's patch (see link below), but goes a bit further. Link: http://lkml.kernel.org/r/20131227132710.7190647c@nehalam.linuxnetplumber.net Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Stephen Hemminger <stephen@networkplumber.org>
* | PCI/MSI: Add pci_enable_msi_exact() and pci_enable_msix_exact()Alexander Gordeev2014-02-131-2/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | The new functions are special cases for pci_enable_msi_range() and pci_enable_msix_range() when a particular number of MSI or MSI-X is needed. By contrast with pci_enable_msi_range() and pci_enable_msix_range() functions, pci_enable_msi_exact() and pci_enable_msix_exact() return zero in case of success, which indicates MSI or MSI-X interrupts have been successfully allocated. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | PCI/MSI: Fix cut-and-paste errors in documentationAlexander Gordeev2014-02-131-6/+6
| | | | | | | | | | | | | | | | Function pci_enable_msi_range() is used in examples where pci_enable_msix_range() should have been used instead. Reported-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | PCI/MSI: Add pci_enable_msi() documentation backAlexander Gordeev2014-02-041-3/+20
|/ | | | | | | | | | | | | | | | | | We deprecated pci_enable_msi() in 302a2523c277 ("PCI/MSI: Add pci_enable_msi_range() and pci_enable_msix_range()"). But we changed our minds after noticing that: - pci_enable_msi() doesn't have confusing return values like pci_enable_msi_block() and pci_enable_msix() did, and - pci_enable_msi() has a hundred or so callers that we don't want to change. This adds back the pci_enable_msi() documentation. [bhelgaas: changelog] Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* Merge branch 'pci/msi' into nextBjorn Helgaas2014-01-081-98/+210
|\ | | | | | | | | | | | | | | * pci/msi: PCI/MSI: Add pci_enable_msi_range() and pci_enable_msix_range() PCI/MSI: Add pci_msix_vec_count() PCI/MSI: Remove pci_enable_msi_block_auto() PCI/MSI: Add pci_msi_vec_count()
| * PCI/MSI: Add pci_enable_msi_range() and pci_enable_msix_range()Alexander Gordeev2014-01-041-75/+186
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds pci_enable_msi_range(), which supersedes the pci_enable_msi() and pci_enable_msi_block() MSI interfaces. It also adds pci_enable_msix_range(), which supersedes the pci_enable_msix() MSI-X interface. The old interfaces have three categories of return values: negative: failure; caller should not retry positive: failure; value indicates number of interrupts that *could* have been allocated, and caller may retry with a smaller request zero: success; at least as many interrupts allocated as requested It is error-prone to handle these three cases correctly in drivers. The new functions return either a negative error code or a number of successfully allocated MSI/MSI-X interrupts, which is expected to lead to clearer device driver code. pci_enable_msi(), pci_enable_msi_block() and pci_enable_msix() still exist unchanged, but are deprecated and may be removed after callers are updated. [bhelgaas: tweak changelog] Suggested-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Tejun Heo <tj@kernel.org>
| * PCI/MSI: Add pci_msix_vec_count()Alexander Gordeev2014-01-041-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This creates an MSI-X counterpart for pci_msi_vec_count(). Device drivers can use this function to obtain maximum number of MSI-X interrupts the device supports and use that number in a subsequent call to pci_enable_msix(). pci_msix_vec_count() supersedes pci_msix_table_size() and returns a negative errno if device does not support MSI-X interrupts. After this update, callers must always check the returned value. The only user of pci_msix_table_size() was the PCI-Express port driver, which is also updated by this change. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Tejun Heo <tj@kernel.org>
| * PCI/MSI: Remove pci_enable_msi_block_auto()Alexander Gordeev2014-01-041-33/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The new pci_msi_vec_count() interface makes pci_enable_msi_block_auto() superfluous. Drivers can use pci_msi_vec_count() to learn the maximum number of MSIs supported by the device, and then call pci_enable_msi_block(). pci_enable_msi_block_auto() was introduced recently, and its only user is the AHCI driver, which is also updated by this change. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Tejun Heo <tj@kernel.org>
| * PCI/MSI: Add pci_msi_vec_count()Alexander Gordeev2014-01-041-0/+15
| | | | | | | | | | | | | | | | | | Device drivers can use this interface to obtain the maximum number of MSI interrupts the device supports and use that number, e.g., in a subsequent call to pci_enable_msi_block(). Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Tejun Heo <tj@kernel.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 22:43:19 +0100