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path: root/include/linux/pci.h
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2020-02-24PCI: Add nr_devfns parameter to pci_add_dma_alias()James Sewart1-1/+1
[ Upstream commit 09298542cd891b43778db1f65aa3613aa5a562eb ] Add a "nr_devfns" parameter to pci_add_dma_alias() so it can be used to create DMA aliases for a range of devfns. [bhelgaas: incorporate nr_devfns fix from James, update quirk_pex_vca_alias() and setup_aliases()] Signed-off-by: James Sewart <jamessewart@arista.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-09PCI: Fix missing inline for pci_pr3_present()Takashi Iwai1-1/+1
[ Upstream commit 46b4bff6572b0552b1ee062043621e4b252638d8 ] The inline prefix was missing in the dummy function pci_pr3_present() definition. Fix it. Reported-by: kbuild test robot <lkp@intel.com> Fixes: 52525b7a3cf8 ("PCI: Add a helper to check Power Resource Requirements _PR3 existence") Link: https://lore.kernel.org/r/201910212111.qHm6OcWx%lkp@intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-09PCI: Add a helper to check Power Resource Requirements _PR3 existenceKai-Heng Feng1-0/+2
[ Upstream commit 52525b7a3cf82adec5c6cf0ecbd23ff228badc94 ] A driver may want to know the existence of _PR3, to choose different runtime suspend behavior. A user will be add in next patch. This is mostly the same as nouveau_pr3_present(). Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20191018073848.14590-1-kai.heng.feng@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-09-24Merge tag 'pci-v5.4-changes' of ↵Linus Torvalds1-84/+49
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Enumeration: - Consolidate _HPP/_HPX stuff in pci-acpi.c and simplify it (Krzysztof Wilczynski) - Fix incorrect PCIe device types and remove dev->has_secondary_link to simplify code that deals with upstream/downstream ports (Mika Westerberg) - After suspend, restore Resizable BAR size bits correctly for 1MB BARs (Sumit Saxena) - Enable PCI_MSI_IRQ_DOMAIN support for RISC-V (Wesley Terpstra) Virtualization: - Add ACS quirks for iProc PAXB (Abhinav Ratna), Amazon Annapurna Labs (Ali Saidi) - Move sysfs SR-IOV functions to iov.c (Kelsey Skunberg) - Remove group write permissions from sysfs sriov_numvfs, sriov_drivers_autoprobe (Kelsey Skunberg) Hotplug: - Simplify pciehp indicator control (Denis Efremov) Peer-to-peer DMA: - Allow P2P DMA between root ports for whitelisted bridges (Logan Gunthorpe) - Whitelist some Intel host bridges for P2P DMA (Logan Gunthorpe) - DMA map P2P DMA requests that traverse host bridge (Logan Gunthorpe) Amazon Annapurna Labs host bridge driver: - Add DT binding and controller driver (Jonathan Chocron) Hyper-V host bridge driver: - Fix hv_pci_dev->pci_slot use-after-free (Dexuan Cui) - Fix PCI domain number collisions (Haiyang Zhang) - Use instance ID bytes 4 & 5 as PCI domain numbers (Haiyang Zhang) - Fix build errors on non-SYSFS config (Randy Dunlap) i.MX6 host bridge driver: - Limit DBI register length (Stefan Agner) Intel VMD host bridge driver: - Fix config addressing issues (Jon Derrick) Layerscape host bridge driver: - Add bar_fixed_64bit property to endpoint driver (Xiaowei Bao) - Add CONFIG_PCI_LAYERSCAPE_EP to build EP/RC drivers separately (Xiaowei Bao) Mediatek host bridge driver: - Add MT7629 controller support (Jianjun Wang) Mobiveil host bridge driver: - Fix CPU base address setup (Hou Zhiqiang) - Make "num-lanes" property optional (Hou Zhiqiang) Tegra host bridge driver: - Fix OF node reference leak (Nishka Dasgupta) - Disable MSI for root ports to work around design problem (Vidya Sagar) - Add Tegra194 DT binding and controller support (Vidya Sagar) - Add support for sideband pins and slot regulators (Vidya Sagar) - Add PIPE2UPHY support (Vidya Sagar) Misc: - Remove unused pci_block_cfg_access() et al (Kelsey Skunberg) - Unexport pci_bus_get(), etc (Kelsey Skunberg) - Hide PM, VC, link speed, ATS, ECRC, PTM constants and interfaces in the PCI core (Kelsey Skunberg) - Clean up sysfs DEVICE_ATTR() usage (Kelsey Skunberg) - Mark expected switch fall-through (Gustavo A. R. Silva) - Propagate errors for optional regulators and PHYs (Thierry Reding) - Fix kernel command line resource_alignment parameter issues (Logan Gunthorpe)" * tag 'pci-v5.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (112 commits) PCI: Add pci_irq_vector() and other stubs when !CONFIG_PCI arm64: tegra: Add PCIe slot supply information in p2972-0000 platform arm64: tegra: Add configuration for PCIe C5 sideband signals PCI: tegra: Add support to enable slot regulators PCI: tegra: Add support to configure sideband pins PCI: vmd: Fix shadow offsets to reflect spec changes PCI: vmd: Fix config addressing when using bus offsets PCI: dwc: Add validation that PCIe core is set to correct mode PCI: dwc: al: Add Amazon Annapurna Labs PCIe controller driver dt-bindings: PCI: Add Amazon's Annapurna Labs PCIe host bridge binding PCI: Add quirk to disable MSI-X support for Amazon's Annapurna Labs Root Port PCI/VPD: Prevent VPD access for Amazon's Annapurna Labs Root Port PCI: Add ACS quirk for Amazon Annapurna Labs root ports PCI: Add Amazon's Annapurna Labs vendor ID MAINTAINERS: Add PCI native host/endpoint controllers designated reviewer PCI: hv: Use bytes 4 and 5 from instance ID as the PCI domain numbers dt-bindings: PCI: tegra: Add PCIe slot supplies regulator entries dt-bindings: PCI: tegra: Add sideband pins configuration entries PCI: tegra: Add Tegra194 PCIe support PCI: Get rid of dev->has_secondary_link flag ...
2019-09-24Merge branch 'pci/trivial'Bjorn Helgaas1-2/+2
- Fix typos and whitespace errors (Bjorn Helgaas, Krzysztof Wilczynski) - Remove unnecessary "return" statements (Krzysztof Wilczynski) - Correct of_irq_parse_pci() function documentation (Lubomir Rintel) * pci/trivial: PCI: Remove unnecessary returns PCI: OF: Correct of_irq_parse_pci() documentation PCI: Fix typos and whitespace errors
2019-09-24Merge branch 'pci/resource'Bjorn Helgaas1-16/+0
- Convert pci_resource_to_user() to a weak function to remove HAVE_ARCH_PCI_RESOURCE_TO_USER #defines (Denis Efremov) - Use PCI_SRIOV_NUM_BARS for idiomatic loop structure (Denis Efremov) - Fix Resizable BAR size suspend/restore for 1MB BARs (Sumit Saxena) - Correct "pci=resource_alignment" example in documentation (Alexey Kardashevskiy) * pci/resource: PCI: Correct pci=resource_alignment parameter example PCI: Restore Resizable BAR size bits correctly for 1MB BARs PCI: Use PCI_SRIOV_NUM_BARS in loops instead of PCI_IOV_RESOURCE_END PCI: Convert pci_resource_to_user() to a weak function # Conflicts: # drivers/pci/pci.c
2019-09-24Merge branch 'pci/misc'Bjorn Helgaas1-13/+29
- Use devm_add_action_or_reset() helper (Fuqian Huang) - Mark expected switch fall-through (Gustavo A. R. Silva) - Convert sysfs device attributes from __ATTR() to DEVICE_ATTR() (Kelsey Skunberg) - Convert sysfs file permissions from S_IRUSR etc to octal (Kelsey Skunberg) - Move SR-IOV sysfs functions to iov.c (Kelsey Skunberg) - Add pci_info_ratelimited() to ratelimit PCI messages separately (Krzysztof Wilczynski) - Fix "'static' not at beginning of declaration" warnings (Krzysztof Wilczynski) - Clean up resource_alignment parameter to not require static buffer (Logan Gunthorpe) - Add ACS quirk for iProc PAXB (Abhinav Ratna) - Add pci_irq_vector() and other stubs for !CONFIG_PCI (Herbert Xu) * pci/misc: PCI: Add pci_irq_vector() and other stubs when !CONFIG_PCI PCI: Add ACS quirk for iProc PAXB PCI: Force trailing new line to resource_alignment_param in sysfs PCI: Move pci_[get|set]_resource_alignment_param() into their callers PCI: Clean up resource_alignment parameter to not require static buffer PCI: Use static const struct, not const static struct PCI: Add pci_info_ratelimited() to ratelimit PCI separately PCI/IOV: Remove group write permission from sriov_numvfs, sriov_drivers_autoprobe PCI/IOV: Move sysfs SR-IOV functions to iov.c PCI: sysfs: Change permissions from symbolic to octal PCI: sysfs: Change DEVICE_ATTR() to DEVICE_ATTR_WO() PCI: sysfs: Define device attributes with DEVICE_ATTR*() PCI: Mark expected switch fall-through PCI: Use devm_add_action_or_reset()
2019-09-24Merge branch 'pci/enumeration'Bjorn Helgaas1-1/+0
- Consolidate _HPP & _HPX code in pci-acpi.h and remove unnecessary struct hotplug_program_ops (Krzysztof Wilczynski) - Fixup PCIe device types to remove the need for dev->has_secondary_link (Mika Westerberg) * pci/enumeration: PCI: Get rid of dev->has_secondary_link flag PCI: Make pcie_downstream_port() available outside of access.c PCI/ACPI: Remove unnecessary struct hotplug_program_ops PCI/ACPI: Move _HPP & _HPX functions to pci-acpi.c PCI/ACPI: Rename _HPX structs from hpp_* to hpx_*
2019-09-24Merge branch 'pci/encapsulate'Bjorn Helgaas1-52/+0
- Move many symbols from public linux/pci.h to subsystem-private drivers/pci/pci.h (Kelsey Skunberg) - Unexport pci_bus_get() and pci_bus_sem since they're not needed by modules (Kelsey Skunberg) - Remove unused pci_block_cfg_access() et al (Kelsey Skunberg) * pci/encapsulate: PCI: Make pci_set_of_node(), etc private PCI: Make pci_enable_ptm() private PCI: Make pcie_set_ecrc_checking(), pcie_ecrc_get_policy() private PCI: Make pci_ats_init() private PCI: Make pcie_update_link_speed() private PCI: Make pci_bus_get(), pci_bus_put() private PCI: Make pci_hotplug_io_size, mem_size, and bus_size private PCI: Make pci_save_vc_state(), pci_restore_vc_state(), etc private PCI: Make pci_get_host_bridge_device(), pci_put_host_bridge_device() private PCI: Make pci_check_pme_status(), pci_pme_wakeup_bus() private PCI: Make PCI_PM_* delay times private PCI: Unexport pci_bus_sem PCI: Unexport pci_bus_get() and pci_bus_put() PCI: Remove pci_block_cfg_access() et al (unused)
2019-09-21PCI: Add pci_irq_vector() and other stubs when !CONFIG_PCIHerbert Xu1-13/+26
Add stub functions pci_alloc_irq_vectors_affinity() and pci_irq_vector() when CONFIG_PCI is off so drivers can use them without resorting to ifdefs. Also move the PCI_IRQ_* macros outside of the ifdefs so they are always available. Fixes: 625f269a5a7a ("crypto: inside-secure - add support for PCI based FPGA development board") Link: https://lore.kernel.org/r/20190904122600.GA28660@gondor.apana.org.au Reported-by: kbuild test robot <lkp@intel.com> Reported-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-09-07PCI: Get rid of dev->has_secondary_link flagMika Westerberg1-1/+0
In some systems, the Device/Port Type in the PCI Express Capabilities register incorrectly identifies upstream ports as downstream ports. d0751b98dfa3 ("PCI: Add dev->has_secondary_link to track downstream PCIe links") addressed this by adding pci_dev.has_secondary_link, which is set for downstream ports. But this is confusing because pci_pcie_type() sometimes gives the wrong answer, and it's not obvious that we should use pci_dev.has_secondary_link instead. Reduce the confusion by correcting the type of the port itself so that pci_pcie_type() returns the actual type regardless of what the Device/Port Type register claims it is. Update the users to call pci_pcie_type() and pcie_downstream_port() accordingly, and remove pci_dev.has_secondary_link completely. Link: https://lore.kernel.org/linux-pci/20190703133953.GK128603@google.com/ Suggested-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20190822085553.62697-2-mika.westerberg@linux.intel.com Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2019-09-05PCI: Add pci_info_ratelimited() to ratelimit PCI separatelyKrzysztof Wilczynski1-0/+3
Do not use printk_ratelimit() in drivers/pci/pci.c as it shares the rate limiting state with all other callers to the printk_ratelimit(). Add pci_info_ratelimited() (similar to pci_notice_ratelimited() added in the commit a88a7b3eb076 ("vfio: Use dev_printk() when possible")) and use it instead of printk_ratelimit() + pci_info(). Link: https://lore.kernel.org/r/20190825224616.8021-1-kw@linux.com Signed-off-by: Krzysztof Wilczynski <kw@linux.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-08-30PCI: Fix typos and whitespace errorsBjorn Helgaas1-2/+2
Fix typos in drivers/pci. Comment and whitespace changes only. Link: https://lore.kernel.org/r/20190819115306.27338-1-kw@linux.com Signed-off-by: Krzysztof Wilczynski <kw@linux.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> # armada8k
2019-08-28PCI: Move ASPM declarations to linux/pci.hKrzysztof Wilczynski1-0/+18
Move ASPM definitions and function prototypes from include/linux/pci-aspm.h to include/linux/pci.h so users only need to include <linux/pci.h>: PCIE_LINK_STATE_L0S PCIE_LINK_STATE_L1 PCIE_LINK_STATE_CLKPM pci_disable_link_state() pci_disable_link_state_locked() pcie_no_aspm() No functional changes intended. Link: https://lore.kernel.org/r/20190827095620.11213-1-kw@linux.com Signed-off-by: Krzysztof Wilczynski <kw@linux.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-08-12PCI/ASPM: Add pcie_aspm_enabled()Rafael J. Wysocki1-0/+2
Add a function checking whether or not PCIe ASPM has been enabled for a given device. It will be used by the NVMe driver to decide how to handle the device during system suspend. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Keith Busch <keith.busch@intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2019-08-08PCI: Convert pci_resource_to_user() to a weak functionDenis Efremov1-16/+0
Convert pci_resource_to_user() to a weak function so the existing architecture-specific implementations will automatically override the generic one. This allows us to remove HAVE_ARCH_PCI_RESOURCE_TO_USER definitions and avoid the conditional compilation for this single function. Link: https://lore.kernel.org/r/20190729101401.28068-1-efremov@linux.com Link: https://lore.kernel.org/r/20190729101401.28068-2-efremov@linux.com Link: https://lore.kernel.org/r/20190729101401.28068-3-efremov@linux.com Link: https://lore.kernel.org/r/20190729101401.28068-4-efremov@linux.com Link: https://lore.kernel.org/r/20190729101401.28068-5-efremov@linux.com Link: https://lore.kernel.org/r/20190729101401.28068-6-efremov@linux.com Signed-off-by: Denis Efremov <efremov@linux.com> [bhelgaas: squash into one commit] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Paul Burton <paul.burton@mips.com> # MIPS
2019-07-30PCI: Make pci_set_of_node(), etc privateKelsey Skunberg1-8/+0
These interfaces: void pci_set_of_node(struct pci_dev *dev); void pci_release_of_node(struct pci_dev *dev); void pci_set_bus_of_node(struct pci_bus *bus); void pci_release_bus_of_node(struct pci_bus *bus); are only used in drivers/pci/ and do not need to be seen by the rest of the kernel. Move them to drivers/pci/pci.h so they're private to the PCI subsystem. Link: https://lore.kernel.org/r/20190724233848.73327-12-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-07-30PCI: Make pci_enable_ptm() privateKelsey Skunberg1-7/+0
This interface: int pci_enable_ptm(struct pci_dev *dev, u8 *granularity); is only used in drivers/pci/ and does not need to be seen by the rest of the kernel. Move it to drivers/pci/pci.h so it's private to the PCI subsystem. Link: https://lore.kernel.org/r/20190724233848.73327-11-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-07-30PCI: Make pcie_set_ecrc_checking(), pcie_ecrc_get_policy() privateKelsey Skunberg1-8/+0
These interfaces: void pcie_set_ecrc_checking(struct pci_dev *dev); void pcie_ecrc_get_policy(char *str); are only used in drivers/pci/ and do not need to be seen by the rest of the kernel. Move them to drivers/pci/pci.h so they're private to the PCI subsystem. Link: https://lore.kernel.org/r/20190724233848.73327-10-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-07-30PCI: Make pci_ats_init() privateKelsey Skunberg1-2/+0
This interface: void pci_ats_init(struct pci_dev *dev); is only used in drivers/pci/ and does not need to be seen by the rest of the kernel. Move it to drivers/pci/pci.h so it's private to the PCI subsystem. Link: https://lore.kernel.org/r/20190724233848.73327-9-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-07-30PCI: Make pcie_update_link_speed() privateKelsey Skunberg1-1/+0
This interface: void pcie_update_link_speed(struct pci_bus *bus, u16 link_status); is only used in drivers/pci/ and does not need to be seen by the rest of the kernel. Move it to drivers/pci/pci.h so it's private to the PCI subsystem. Link: https://lore.kernel.org/r/20190724233848.73327-8-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-07-30PCI: Make pci_bus_get(), pci_bus_put() privateKelsey Skunberg1-2/+0
These interfaces: struct pci_bus *pci_bus_get(struct pci_bus *bus); void pci_bus_put(struct pci_bus *bus); are only used in drivers/pci/ and do not need to be seen by the rest of the kernel. Move them to drivers/pci/pci.h so they're private to the PCI subsystem. Link: https://lore.kernel.org/r/20190724233848.73327-7-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-07-30PCI: Make pci_hotplug_io_size, mem_size, and bus_size privateKelsey Skunberg1-4/+0
These symbols: extern unsigned long pci_hotplug_io_size; extern unsigned long pci_hotplug_mem_size; extern unsigned long pci_hotplug_bus_size; are only used in drivers/pci/ and do not need to be seen by the rest of the kernel. Move them to drivers/pci/pci.h so they're private to the PCI subsystem. Link: https://lore.kernel.org/r/20190724233848.73327-6-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-07-30PCI: Make pci_save_vc_state(), pci_restore_vc_state(), etc privateKelsey Skunberg1-5/+0
These Virtual Channel interfaces: int pci_save_vc_state(struct pci_dev *dev); void pci_restore_vc_state(struct pci_dev *dev); void pci_allocate_vc_save_buffers(struct pci_dev *dev); are only used in drivers/pci/ and do not need to be seen by the rest of the kernel. Move them to drivers/pci/pci.h so they're private to the PCI subsystem. Link: https://lore.kernel.org/r/20190724233848.73327-5-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-07-30PCI: Make pci_get_host_bridge_device(), pci_put_host_bridge_device() privateKelsey Skunberg1-3/+0
These interfaces: struct device *pci_get_host_bridge_device(struct pci_dev *dev); void pci_put_host_bridge_device(struct device *dev); are only used in drivers/pci/ and do not need to be seen by the rest of the kernel. Move them to drivers/pci/pci.h so they're private to the PCI subsystem. Link: https://lore.kernel.org/r/20190724233848.73327-4-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-07-30PCI: Make pci_check_pme_status(), pci_pme_wakeup_bus() privateKelsey Skunberg1-2/+0
These interfaces: bool pci_check_pme_status(struct pci_dev *dev); void pci_pme_wakeup_bus(struct pci_bus *bus); are only used in drivers/pci/ and do not need to be seen by the rest of the kernel. Move them to drivers/pci/pci.h so they're private to the PCI subsystem. Link: https://lore.kernel.org/r/20190724233848.73327-3-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-07-30PCI: Make PCI_PM_* delay times privateKelsey Skunberg1-5/+0
These delay time definitions: #define PCI_PM_D2_DELAY 200 #define PCI_PM_D3_WAIT 10 #define PCI_PM_D3COLD_WAIT 100 #define PCI_PM_BUS_WAIT 50 are only used in drivers/pci/ and do not need to be seen by the rest of the kernel. Move them to drivers/pci/pci.h so they're private to the PCI subsystem. Link: https://lore.kernel.org/r/20190724233848.73327-2-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-07-24PCI: Remove pci_block_cfg_access() et al (unused)Kelsey Skunberg1-5/+0
Remove the following unused functions from include/linux/pci.h: pci_block_cfg_access() pci_block_cfg_access_in_atomic() pci_unblock_cfg_access() These were added by fb51ccbf217c ("PCI: Rework config space blocking services"), though no callers were added. Link: https://lore.kernel.org/r/20190715203416.37547-1-skunberg.kelsey@gmail.com Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
2019-07-21Merge tag 'ntb-5.3' of git://github.com/jonmason/ntbLinus Torvalds1-0/+9
Pull NTB updates from Jon Mason: "New feature to add support for NTB virtual MSI interrupts, the ability to test and use this feature in the NTB transport layer. Also, bug fixes for the AMD and Switchtec drivers, as well as some general patches" * tag 'ntb-5.3' of git://github.com/jonmason/ntb: (22 commits) NTB: Describe the ntb_msi_test client in the documentation. NTB: Add MSI interrupt support to ntb_transport NTB: Add ntb_msi_test support to ntb_test NTB: Introduce NTB MSI Test Client NTB: Introduce MSI library NTB: Rename ntb.c to support multiple source files in the module NTB: Introduce functions to calculate multi-port resource index NTB: Introduce helper functions to calculate logical port number PCI/switchtec: Add module parameter to request more interrupts PCI/MSI: Support allocating virtual MSI interrupts ntb_hw_switchtec: Fix setup MW with failure bug ntb_hw_switchtec: Skip unnecessary re-setup of shared memory window for crosslink case ntb_hw_switchtec: Remove redundant steps of switchtec_ntb_reinit_peer() function NTB: correct ntb_dev_ops and ntb_dev comment typos NTB: amd: Silence shift wrapping warning in amd_ntb_db_vector_mask() ntb_hw_switchtec: potential shift wrapping bug in switchtec_ntb_init_sndev() NTB: ntb_transport: Ensure qp->tx_mw_dma_addr is initaliazed NTB: ntb_hw_amd: set peer limit register NTB: ntb_perf: Clear stale values in doorbell and command SPAD register NTB: ntb_perf: Disable NTB link after clearing peer XLAT registers ...
2019-07-16Merge tag 'pci-v5.3-changes' of ↵Linus Torvalds1-2/+51
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Enumeration changes: - Evaluate PCI Boot Configuration _DSM to learn if firmware wants us to preserve its resource assignments (Benjamin Herrenschmidt) - Simplify resource distribution (Nicholas Johnson) - Decode 32 GT/s link speed (Gustavo Pimentel) Virtualization: - Fix incorrect caching of VF config space size (Alex Williamson) - Fix VF driver probing sysfs knobs (Alex Williamson) Peer-to-peer DMA: - Fix dma_virt_ops check (Logan Gunthorpe) Altera host bridge driver: - Allow building as module (Ley Foon Tan) Armada 8K host bridge driver: - add PHYs support (Miquel Raynal) DesignWare host bridge driver: - Export APIs to support removable loadable module (Vidya Sagar) - Enable Relaxed Ordering erratum workaround only on Tegra20 & Tegra30 (Vidya Sagar) Hyper-V host bridge driver: - Fix use-after-free in eject (Dexuan Cui) Mobiveil host bridge driver: - Clean up and fix many issues, including non-identify mapped windows, 64-bit windows, multi-MSI, class code, INTx clearing (Hou Zhiqiang) Qualcomm host bridge driver: - Use clk bulk API for 2.4.0 controllers (Bjorn Andersson) - Add QCS404 support (Bjorn Andersson) - Assert PERST for at least 100ms (Niklas Cassel) R-Car host bridge driver: - Add r8a774a1 DT support (Biju Das) Tegra host bridge driver: - Add support for Gen2, opportunistic UpdateFC and ACK (PCIe protocol details) AER, GPIO-based PERST# (Manikanta Maddireddy) - Fix many issues, including power-on failure cases, interrupt masking in suspend, UPHY settings, AFI dynamic clock gating, pending DLL transactions (Manikanta Maddireddy) Xilinx host bridge driver: - Fix NWL Multi-MSI programming (Bharat Kumar Gogada) Endpoint support: - Fix 64bit BAR support (Alan Mikhak) - Fix pcitest build issues (Alan Mikhak, Andy Shevchenko) Bug fixes: - Fix NVIDIA GPU multi-function power dependencies (Abhishek Sahu) - Fix NVIDIA GPU HDA enablement issue (Lukas Wunner) - Ignore lockdep for sysfs "remove" (Marek Vasut) Misc: - Convert docs to reST (Changbin Du, Mauro Carvalho Chehab)" * tag 'pci-v5.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (107 commits) PCI: Enable NVIDIA HDA controllers tools: PCI: Fix installation when `make tools/pci_install` PCI: dwc: pci-dra7xx: Fix compilation when !CONFIG_GPIOLIB PCI: Fix typos and whitespace errors PCI: mobiveil: Fix INTx interrupt clearing in mobiveil_pcie_isr() PCI: mobiveil: Fix infinite-loop in the INTx handling function PCI: mobiveil: Move PCIe PIO enablement out of inbound window routine PCI: mobiveil: Add upper 32-bit PCI base address setup in inbound window PCI: mobiveil: Add upper 32-bit CPU base address setup in outbound window PCI: mobiveil: Mask out hardcoded bits in inbound/outbound windows setup PCI: mobiveil: Clear the control fields before updating it PCI: mobiveil: Add configured inbound windows counter PCI: mobiveil: Fix the valid check for inbound and outbound windows PCI: mobiveil: Clean-up program_{ib/ob}_windows() PCI: mobiveil: Remove an unnecessary return value check PCI: mobiveil: Fix error return values PCI: mobiveil: Refactor the MEM/IO outbound window initialization PCI: mobiveil: Make some register updates more readable PCI: mobiveil: Reformat the code for readability dt-bindings: PCI: mobiveil: Change gpio_slave and apb_csr to optional ...
2019-07-13Merge branch 'pci/trivial'Bjorn Helgaas1-1/+1
- Fix typos and whitespace errors (Bjorn Helgaas) * pci/trivial: PCI: Fix typos and whitespace errors
2019-07-13Merge branch 'pci/resource'Bjorn Helgaas1-0/+2
- Evaluate ACPI "PCI Boot Configuration"_DSM (Benjamin Herrenschmidt) - Don't auto-realloc if we're preserving firmware config (Benjamin Herrenschmidt) - Allow arm64 to reallocate resources if necessary (Benjamin Herrenschmidt) - Preserve firmware config on arm64 when desired (Benjamin Herrenschmidt) - Simplify resource distribution to hotplug bridges (Nicholas Johnson) * pci/resource: PCI: Skip resource distribution when no hotplug bridges PCI: Simplify pci_bus_distribute_available_resources() arm64: PCI: Preserve firmware configuration when desired arm64: PCI: Allow resource reallocation if necessary PCI: Don't auto-realloc if we're preserving firmware config PCI/ACPI: Evaluate PCI Boot Configuration _DSM
2019-07-13Merge branch 'pci/enumeration'Bjorn Helgaas1-0/+1
- If user prevents VF probing, return error instead of pretending a driver has claimed the VF (Alex Williamson) - Always allow probing with driver_override (Alex Williamson) - Decode PCIe 32 GT/s link speed (Gustavo Pimentel) - Ignore lockdep for sysfs remove to avoid lockdep false positive (Marek Vasut) * pci/enumeration: PCI: sysfs: Ignore lockdep for remove attribute PCI: Decode PCIe 32 GT/s link speed PCI: Always allow probing with driver_override PCI: Return error if cannot probe VF
2019-07-09PCI: Fix typos and whitespace errorsBjorn Helgaas1-1/+1
Fix typos in drivers/pci. Comment and whitespace changes only. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
2019-06-22PCI/ACPI: Evaluate PCI Boot Configuration _DSMBenjamin Herrenschmidt1-0/+2
Evaluate _DSM Function #5, the "PCI Boot Configuration" function. If the result is 0, the OS should preserve any resource assignments made by the firmware. Link: https://lore.kernel.org/r/20190615002359.29577-2-benh@kernel.crashing.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [bhelgaas: commit log] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-06-15docs: power: convert docs to ReST and rename to *.rstMauro Carvalho Chehab1-1/+1
Convert the PM documents to ReST, in order to allow them to build with Sphinx. The conversion is actually: - add blank lines and indentation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Srivatsa S. Bhat (VMware) <srivatsa@csail.mit.edu>
2019-06-14PCI: Decode PCIe 32 GT/s link speedGustavo Pimentel1-0/+1
PCIe r5.0, sec 7.5.3.18, defines a new 32.0 GT/s bit in the Supported Link Speeds Vector of Link Capabilities 2. Decode this new speed. This does not affect the speed of the link, which should be negotiated automatically by the hardware; it only adds decoding when showing the speed to the user. Previously, reading the speed of a link operating at this speed showed "Unknown speed" instead of "32.0 GT/s". Link: https://lore.kernel.org/lkml/92365e3caf0fc559f9ab14bcd053bfc92d4f661c.1559664969.git.gustavo.pimentel@synopsys.com Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> [bhelgaas: changelog] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-06-13PCI/MSI: Support allocating virtual MSI interruptsLogan Gunthorpe1-0/+9
For NTB devices, we want to be able to trigger MSI interrupts through a memory window. In these cases we may want to use more interrupts than the NTB PCI device has available in its MSI-X table. We allow for this by creating a new 'virtual' interrupt. These interrupts are allocated as usual but are not programmed into the MSI-X table (as there may not be space for them). The MSI address and data will then handled through an NTB MSI library introduced later in this series. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2019-05-31Documentation: PCI: convert pci.txt to reSTChangbin Du1-1/+47
Convert plain text documentation to reStructuredText format and add it to Sphinx TOC tree. No essential content change. Move the description of struct pci_driver and struct pci_device_id into in-source comments. Signed-off-by: Changbin Du <changbin.du@gmail.com> [bhelgaas: fix kernel-doc warnings related to moving descriptions to linux/pci.h, fix "space tab" whitespace errors in mod_devicetable.h] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-05-27PCI: PM: Avoid possible suspend-to-idle issueRafael J. Wysocki1-0/+1
If a PCI driver leaves the device handled by it in D0 and calls pci_save_state() on the device in its ->suspend() or ->suspend_late() callback, it can expect the device to stay in D0 over the whole s2idle cycle. However, that may not be the case if there is a spurious wakeup while the system is suspended, because in that case pci_pm_suspend_noirq() will run again after pci_pm_resume_noirq() which calls pci_restore_state(), via pci_pm_default_resume_early(), so state_saved is cleared and the second iteration of pci_pm_suspend_noirq() will invoke pci_prepare_to_sleep() which may change the power state of the device. To avoid that, add a new internal flag, skip_bus_pm, that will be set by pci_pm_suspend_noirq() when it runs for the first time during the given system suspend-resume cycle if the state of the device has been saved already and the device is still in D0. Setting that flag will cause the next iterations of pci_pm_suspend_noirq() to set state_saved for pci_pm_resume_noirq(), so that it always restores the device state from the originally saved data, and avoid calling pci_prepare_to_sleep() for the device. Fixes: 33e4f80ee69b ("ACPI / PM: Ignore spurious SCI wakeups from suspend-to-idle") Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2019-05-14Merge tag 'pci-v5.2-changes' of ↵Linus Torvalds1-1/+8
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Enumeration changes: - Add _HPX Type 3 settings support, which gives firmware more influence over device configuration (Alexandru Gagniuc) - Support fixed bus numbers from bridge Enhanced Allocation capabilities (Subbaraya Sundeep) - Add "external-facing" DT property to identify cases where we require IOMMU protection against untrusted devices (Jean-Philippe Brucker) - Enable PCIe services for host controller drivers that use managed host bridge alloc (Jean-Philippe Brucker) - Log PCIe port service messages with pci_dev, not the pcie_device (Frederick Lawler) - Convert pciehp from pciehp_debug module parameter to generic dynamic debug (Frederick Lawler) Peer-to-peer DMA: - Add whitelist of Root Complexes that support peer-to-peer DMA between Root Ports (Christian König) Native controller drivers: - Add PCI host bridge DMA ranges for bridges that can't DMA everywhere, e.g., iProc (Srinath Mannam) - Add Amazon Annapurna Labs PCIe host controller driver (Jonathan Chocron) - Fix Tegra MSI target allocation so DMA doesn't generate unwanted MSIs (Vidya Sagar) - Fix of_node reference leaks (Wen Yang) - Fix Hyper-V module unload & device removal issues (Dexuan Cui) - Cleanup R-Car driver (Marek Vasut) - Cleanup Keystone driver (Kishon Vijay Abraham I) - Cleanup i.MX6 driver (Andrey Smirnov) Significant bug fixes: - Reset Lenovo ThinkPad P50 GPU so nouveau works after reboot (Lyude Paul) - Fix Switchtec firmware update performance issue (Wesley Sheng) - Work around Pericom switch link retraining erratum (Stefan Mätje)" * tag 'pci-v5.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (141 commits) MAINTAINERS: Add Karthikeyan Mitran and Hou Zhiqiang for Mobiveil PCI PCI: pciehp: Remove pointless MY_NAME definition PCI: pciehp: Remove pointless PCIE_MODULE_NAME definition PCI: pciehp: Remove unused dbg/err/info/warn() wrappers PCI: pciehp: Log messages with pci_dev, not pcie_device PCI: pciehp: Replace pciehp_debug module param with dyndbg PCI: pciehp: Remove pciehp_debug uses PCI/AER: Log messages with pci_dev, not pcie_device PCI/DPC: Log messages with pci_dev, not pcie_device PCI/PME: Replace dev_printk(KERN_DEBUG) with dev_info() PCI/AER: Replace dev_printk(KERN_DEBUG) with dev_info() PCI: Replace dev_printk(KERN_DEBUG) with dev_info(), etc PCI: Replace printk(KERN_INFO) with pr_info(), etc PCI: Use dev_printk() when possible PCI: Cleanup setup-bus.c comments and whitespace PCI: imx6: Allow asynchronous probing PCI: dwc: Save root bus for driver remove hooks PCI: dwc: Use devm_pci_alloc_host_bridge() to simplify code PCI: dwc: Free MSI in dw_pcie_host_init() error path PCI: dwc: Free MSI IRQ page in dw_pcie_free_msi() ...
2019-05-14Merge branch 'pci/iova-dma-ranges'Bjorn Helgaas1-0/+1
- Add list of legal DMA address ranges to PCI host bridge (Srinath Mannam) - Reserve inaccessible DMA ranges so IOMMU doesn't allocate them (Srinath Mannam) - Parse iProc DT dma-ranges to learn what PCI devices can reach via DMA (Srinath Mannam) * pci/iova-dma-ranges: PCI: iproc: Add sorted dma ranges resource entries to host bridge iommu/dma: Reserve IOVA for PCIe inaccessible DMA address PCI: Add dma_ranges window list # Conflicts: # drivers/pci/probe.c
2019-05-14Merge branch 'pci/misc'Bjorn Helgaas1-1/+5
- Mark expected switch fall-throughs (Gustavo A. R. Silva) - Remove unused pci_request_region_exclusive() (Johannes Thumshirn) - Fix x86 PCI IRQ routing table memory leak (Wenwen Wang) - Reset Lenovo ThinkPad P50 if firmware didn't do it on reboot (Lyude Paul) - Add and use pci_dev_id() helper to simplify PCI_DEVID() usage (touches several places outside drivers/pci/) (Heiner Kallweit) - Transition Mobiveil PCI maintenance to Karthikeyan M and Hou Zhiqiang (Subrahmanya Lingappa) * pci/misc: MAINTAINERS: Add Karthikeyan Mitran and Hou Zhiqiang for Mobiveil PCI platform/chrome: chromeos_laptop: use pci_dev_id() helper stmmac: pci: Use pci_dev_id() helper iommu/vt-d: Use pci_dev_id() helper iommu/amd: Use pci_dev_id() helper drm/amdkfd: Use pci_dev_id() helper powerpc/powernv/npu: Use pci_dev_id() helper r8169: use pci_dev_id() helper PCI: Add pci_dev_id() helper PCI: Reset Lenovo ThinkPad P50 nvgpu at boot if necessary x86/PCI: Fix PCI IRQ routing table memory leak PCI: Remove unused pci_request_region_exclusive() PCI: Mark expected switch fall-throughs
2019-05-13Merge tag 'iommu-updates-v5.2' of ↵Linus Torvalds1-15/+16
ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: - ATS support for ARM-SMMU-v3. - AUX domain support in the IOMMU-API and the Intel VT-d driver. This adds support for multiple DMA address spaces per (PCI-)device. The use-case is to multiplex devices between host and KVM guests in a more flexible way than supported by SR-IOV. - the rest are smaller cleanups and fixes, two of which needed to be reverted after testing in linux-next. * tag 'iommu-updates-v5.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (45 commits) Revert "iommu/amd: Flush not present cache in iommu_map_page" Revert "iommu/amd: Remove the leftover of bypass support" iommu/vt-d: Fix leak in intel_pasid_alloc_table on error path iommu/vt-d: Make kernel parameter igfx_off work with vIOMMU iommu/vt-d: Set intel_iommu_gfx_mapped correctly iommu/amd: Flush not present cache in iommu_map_page iommu/vt-d: Cleanup: no spaces at the start of a line iommu/vt-d: Don't request page request irq under dmar_global_lock iommu/vt-d: Use struct_size() helper iommu/mediatek: Fix leaked of_node references iommu/amd: Remove amd_iommu_pd_list iommu/arm-smmu: Log CBFRSYNRA register on context fault iommu/arm-smmu-v3: Don't disable SMMU in kdump kernel iommu/arm-smmu-v3: Disable tagged pointers iommu/arm-smmu-v3: Add support for PCI ATS iommu/arm-smmu-v3: Link domains and devices iommu/arm-smmu-v3: Add a master->domain pointer iommu/arm-smmu-v3: Store SteamIDs in master iommu/arm-smmu-v3: Rename arm_smmu_master_data to arm_smmu_master ACPI/IORT: Check ATS capability in root complex nodes ...
2019-05-07PCI: Add dma_ranges window listSrinath Mannam1-0/+1
Add a dma_ranges field in PCI host bridge structure to hold resource entries list of memory regions in sorted order representing memory ranges that can be accessed through DMA transactions. Based-on-a-patch-by: Oza Pawandeep <oza.oza@broadcom.com> Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com> [lorenzo.pieralisi@arm.com: updated commit log] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Oza Pawandeep <poza@codeaurora.org> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2019-04-30PCI: Add pci_dev_id() helperHeiner Kallweit1-0/+5
In several places in the kernel we find PCI_DEVID used like this: PCI_DEVID(dev->bus->number, dev->devfn) Add a "pci_dev_id(struct pci_dev *dev)" helper to simplify callers. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-04-23PCI: Add a stub for pci_ats_disabled()Jean-Philippe Brucker1-0/+1
Currently pci_ats_disabled() is only defined when CONFIG_PCI is enabled. Since we're about to use the function in the Arm SMMUv3 driver, which could be built with CONFIG_PCI disabled, add a definition of pci_ats_disabled() for !CONFIG_PCI. Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-23PCI: Move ATS declarations outside of CONFIG_PCIJean-Philippe Brucker1-15/+15
At the moment, the ATS functions are only defined when CONFIG_PCI is enabled. Since we're about to use them in the Arm SMMUv3 driver, which could be built with CONFIG_PCI disabled, and they are already guarded by CONFIG_PCI_ATS which depends on CONFIG_PCI, move the definitions outside of CONFIG_PCI. Acked-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-22vfio: Use dev_printk() when possibleBjorn Helgaas1-0/+3
Use dev_printk() when possible to make messages consistent with other device-related messages. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2019-04-17PCI: Remove unused pci_request_region_exclusive()Johannes Thumshirn1-1/+0
pci_request_region_exclusive() was introduced with commit e8de1481fd71 ("resource: allow MMIO exclusivity for device drivers") in 2.6.29 which was released 2008. It never had an in tree user since then, so after 11 years later let's remove it. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-16 18:17:06 +0300