user/sven/linux.git/include/linux/pci.h, branch v4.9.128

PCI: Add wrappers for dev_printk()

2018-09-09T18:01:20Z

commit 7506dc7989933235e6fc23f3d0516bdbf0f7d1a8 upstream. Add PCI-specific dev_printk() wrappers and use them to simplify the code slightly. No functional change intended. Signed-off-by: Frederick Lawler [bhelgaas: squash into one patch] Signed-off-by: Bjorn Helgaas [only take the pci.h portion of this patch, to make backporting stuff easier over time - gregkh] Signed-off-by: Greg Kroah-Hartman

PCI: OF: Fix I/O space page leak

2018-08-24T11:12:40Z

commit a5fb9fb023a1435f2b42bccd7f547560f3a21dc3 upstream. When testing the R-Car PCIe driver on the Condor board, if the PCIe PHY driver was left disabled, the kernel crashed with this BUG: kernel BUG at lib/ioremap.c:72! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 39 Comm: kworker/0:1 Not tainted 4.17.0-dirty #1092 Hardware name: Renesas Condor board based on r8a77980 (DT) Workqueue: events deferred_probe_work_func pstate: 80000005 (Nzcv daif -PAN -UAO) pc : ioremap_page_range+0x370/0x3c8 lr : ioremap_page_range+0x40/0x3c8 sp : ffff000008da39e0 x29: ffff000008da39e0 x28: 00e8000000000f07 x27: ffff7dfffee00000 x26: 0140000000000000 x25: ffff7dfffef00000 x24: 00000000000fe100 x23: ffff80007b906000 x22: ffff000008ab8000 x21: ffff000008bb1d58 x20: ffff7dfffef00000 x19: ffff800009c30fb8 x18: 0000000000000001 x17: 00000000000152d0 x16: 00000000014012d0 x15: 0000000000000000 x14: 0720072007200720 x13: 0720072007200720 x12: 0720072007200720 x11: 0720072007300730 x10: 00000000000000ae x9 : 0000000000000000 x8 : ffff7dffff000000 x7 : 0000000000000000 x6 : 0000000000000100 x5 : 0000000000000000 x4 : 000000007b906000 x3 : ffff80007c61a880 x2 : ffff7dfffeefffff x1 : 0000000040000000 x0 : 00e80000fe100f07 Process kworker/0:1 (pid: 39, stack limit = 0x (ptrval)) Call trace: ioremap_page_range+0x370/0x3c8 pci_remap_iospace+0x7c/0xac pci_parse_request_of_pci_ranges+0x13c/0x190 rcar_pcie_probe+0x4c/0xb04 platform_drv_probe+0x50/0xbc driver_probe_device+0x21c/0x308 __device_attach_driver+0x98/0xc8 bus_for_each_drv+0x54/0x94 __device_attach+0xc4/0x12c device_initial_probe+0x10/0x18 bus_probe_device+0x90/0x98 deferred_probe_work_func+0xb0/0x150 process_one_work+0x12c/0x29c worker_thread+0x200/0x3fc kthread+0x108/0x134 ret_from_fork+0x10/0x18 Code: f9004ba2 54000080 aa0003fb 17ffff48 (d4210000) It turned out that pci_remap_iospace() wasn't undone when the driver's probe failed, and since devm_phy_optional_get() returned -EPROBE_DEFER, the probe was retried, finally causing the BUG due to trying to remap already remapped pages. Introduce the devm_pci_remap_iospace() managed API and replace the pci_remap_iospace() call with it to fix the bug. Fixes: dbf9826d5797 ("PCI: generic: Convert to DT resource parsing API") Signed-off-by: Sergei Shtylyov [lorenzo.pieralisi@arm.com: split commit/updated the commit log] Signed-off-by: Lorenzo Pieralisi Signed-off-by: Bjorn Helgaas Reviewed-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman

PCI/msi: fix the pci_alloc_irq_vectors_affinity stub

2018-04-13T17:48:07Z

[ Upstream commit 83b4605b0c16cde5b00c8cf192408d51eab75402 ] We need to return an error for any call that asks for MSI / MSI-X vectors only, so that non-trivial fallback logic can work properly. Also valid dev->irq and use the "correct" errno value based on feedback from Linus. Signed-off-by: Christoph Hellwig Reported-by: Steven Rostedt Fixes: aff17164 ("PCI: Provide sensible IRQ vector alloc/free routines") Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

PCI/PM: Add needs_resume flag to avoid suspend complete optimization

2017-06-17T04:41:48Z

commit 4d071c3238987325b9e50e33051a40d1cce311cc upstream. Some drivers - like i915 - may not support the system suspend direct complete optimization due to differences in their runtime and system suspend sequence. Add a flag that when set resumes the device before calling the driver's system suspend handlers which effectively disables the optimization. Needed by a future patch fixing suspend/resume on i915. Suggested by Rafael. Signed-off-by: Imre Deak Signed-off-by: Bjorn Helgaas Acked-by: Rafael J. Wysocki Cc: stable@vger.kernel.org (rebased on v4.8, added kernel version to commit message stable tag) Signed-off-by: Imre Deak Signed-off-by: Greg Kroah-Hartman

PCI: Export pcie_find_root_port

2016-11-23T22:23:23Z

Export pcie_find_root_port() so we can use it outside of PCIe-AER error injection. Signed-off-by: Johannes Thumshirn Signed-off-by: Bjorn Helgaas

Merge tag 'pci-v4.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2016-10-07T18:46:37Z

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 next

2016-10-05T19:00:21Z

* 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

Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-10-04T02:10:15Z

Pull irq updates from Thomas Gleixner: "The irq departement proudly presents: - A rework of the core infrastructure to optimally spread interrupt for multiqueue devices. The first version was a bit naive and failed to take thread siblings and other details into account. Developed in cooperation with Christoph and Keith. - Proper delegation of softirqs to ksoftirqd, so if ksoftirqd is active then no further softirq processsing on interrupt return happens. Otherwise we try to delegate and still run another batch of network packets in the irq return path, which then tries to delegate to ksoftirqd ..... - A proper machine parseable sysfs based alternative for /proc/interrupts. - ACPI support for the GICV3-ITS and ARM interrupt remapping - Two new irq chips from the ARM SoC zoo: STM32-EXTI and MVEBU-PIC - A new irq chip for the JCore (SuperH) - The usual pile of small fixlets in core and irqchip drivers" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits) softirq: Let ksoftirqd do its job genirq: Make function __irq_do_set_handler() static ARM/dts: Add EXTI controller node to stm32f429 ARM/STM32: Select external interrupts controller drivers/irqchip: Add STM32 external interrupts support Documentation/dt-bindings: Document STM32 EXTI controller bindings irqchip/mips-gic: Use for_each_set_bit to iterate over local IRQs pci/msi: Retrieve affinity for a vector genirq/affinity: Remove old irq spread infrastructure genirq/msi: Switch to new irq spreading infrastructure genirq/affinity: Provide smarter irq spreading infrastructure genirq/msi: Add cpumask allocation to alloc_msi_entry genirq: Expose interrupt information through sysfs irqchip/gicv3-its: Use MADT ITS subtable to do PCI/MSI domain initialization irqchip/gicv3-its: Factor out PCI-MSI part that might be reused for ACPI irqchip/gicv3-its: Probe ITS in the ACPI way irqchip/gicv3-its: Refactor ITS DT init code to prepare for ACPI irqchip/gicv3-its: Cleanup for ITS domain initialization PCI/MSI: Setup MSI domain on a per-device basis using IORT ACPI table ACPI: Add new IORT functions to support MSI domain handling ...

Merge branch 'pci/hotplug' into next

2016-10-03T14:43:19Z

* pci/hotplug: x86/PCI: VMD: Request userspace control of PCIe hotplug indicators PCI: pciehp: Allow exclusive userspace control of indicators PCI: pciehp: Remove useless pciehp_get_latch_status() calls PCI: pciehp: Clean up dmesg "Slot(%s)" messages PCI: pciehp: Remove unnecessary guard PCI: pciehp: Don't re-read Slot Status when handling surprise event PCI: pciehp: Don't re-read Slot Status when queuing hotplug event PCI: pciehp: Process all hotplug events before looking for new ones PCI: pciehp: Return IRQ_NONE when we can't read interrupt status PCI: pciehp: Rename pcie_isr() locals for clarity PCI: pciehp: Clear attention LED on device add

Merge branch 'pci/aer' into next

2016-10-03T14:42:57Z

* pci/aer: PCI/AER: Fix aer_probe() kernel-doc comment PCI/AER: Cache capability position PCI/AER: Avoid memory allocation in interrupt handling path ACPI / APEI: Send correct severity to calculate AER severity PCI/AER: Remove duplicate AER severity translation PCI/AER: Remove aerdriver.forceload kernel parameter PCI/AER: Remove aerdriver.nosourceid kernel parameter x86/PCI: VMD: Add quirk for AER to ignore source ID PCI/AER: Add bus flag to skip source ID matching Conflicts: drivers/pci/probe.c