On Mon, Mar 23, 2020 at 05:25:57PM -0700, sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx wrote: > From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx> > > This patchset adds support for following features: > > 1. Error Disconnect Recover (EDR) support. > 2. _OSC based negotiation support for DPC. > > You can find EDR spec in the following link. > > https://members.pcisig.com/wg/PCI-SIG/document/12614 > > Changes since v17 + Bjorns changes: > * This version is based on Bjorn's review/edr branch. > * Moved {pciehp,shpchp}_is_native() function definitions to pci.c and > removed it's CONFIG_ACPI dependency. > * Modified dpc_reset_link() function to return PCI_ERS_RESULT_NEED_RESET > when hotplug is not supported or enabled in kernel. > * Modified reset_link() function to handle PCI_ERS_RESULT_NEED_RESET as > valid return value. > * Moved the implementation of reset_link() function to pcie_do_recovery() > and renamed function callback parameter from reset_cb to reset_link. > * Moved the order of pci_acpi_add_edr_notifier() and > pci_acpi_remove_edr_notifier() calls in pci_acpi_setup() and > pci_acpi_cleanup() above wakeup capable support checks. > * Used acpi_check_dsm() to check whether given _DSM is supported or > not in edr.c. > > Changes since v16: > * Removed reset_link from pcie_port_service_driver. > * Removed pcie_port_find_service(). > * Added pci_dpc_init() in pci_init_capabilities(). > > Changes since v15: > * Splitted Patch # 3 in previous set into multiple patches. > * Refactored EDR driver use pci_dev instead of dpc_dev. > * Added some debug logs to EDR driver. > * Used pci_aer_raw_clear_status() for clearing AER errors in EDR path. > * Addressed other comments from Bjorn. > * Rebased patches on top of Bjorns "PCI/DPC: Move data to struct pci_dev" patch. > > Changes since v14: > * Rebased on top of v5.6-rc1 > > Changes since v13: > * Moved all EDR related code to edr.c > * Addressed Bjorns comments. > > Changes since v12: > * Addressed Bjorns comments. > * Added check for CONFIG_PCIE_EDR before requesting DPC control from firmware. > * Removed ff_check parameter from AER APIs. > * Used macros for _OST return status values in DPC driver. > > Changes since v11: > * Allowed error recovery to proceed after successful reset_link(). > * Used correct ACPI handle for sending EDR status. > * Rebased on top of v5.5-rc5 > > Changes since v10: > * Added "edr_enabled" member to dpc priv structure, which is used to cache EDR > enabling status based on status of pcie_ports_dpc_native and FF mode. > * Changed type of _DSM argument from Integer to Package in acpi_enable_dpc_port() > function to fix ACPI related boot warnings. > * Rebased on top of v5.5-rc3 > > Changes since v9: > * Removed caching of pcie_aer_get_firmware_first() in dpc driver. > * Added proper spec reference in git log for patch 5 & 7. > * Added new function parameter "ff_check" to pci_cleanup_aer_uncorrect_error_status(), > pci_aer_clear_fatal_status() and pci_cleanup_aer_error_status_regs() functions. > * Rebased on top of v5.4-rc5 > > Changes since v8: > * Rebased on top of v5.4-rc1 > > Changes since v7: > * Updated DSM version number to match the spec. > > Changes since v6: > * Modified the order of patches to enable EDR only after all necessary support is added in kernel. > * Addressed Bjorn comments. > > Changes since v5: > * Addressed Keith's comments. > * Added additional check for FF mode in pci_aer_init(). > * Updated commit history of "PCI/DPC: Add support for DPC recovery on NON_FATAL errors" patch. > > Changes since v4: > * Rebased on top of v5.3-rc1 > * Fixed lock/unlock issue in edr_handle_event(). > * Merged "Update error status after reset_link()" patch into this patchset. > > Changes since v3: > * Moved EDR related ACPI functions/definitions to pci-acpi.c > * Modified commit history in few patches to include spec reference. > * Added support to handle DPC triggered by NON_FATAL errors. > * Added edr_lock to protect PCI device receiving duplicate EDR notifications. > * Addressed Bjorn comments. > > Changes since v2: > * Split EDR support patch into multiple patches. > * Addressed Bjorn comments. > > Changes since v1: > * Rebased on top of v5.1-rc1 > > Bjorn Helgaas (1): > PCI/DPC: Move DPC data into struct pci_dev > > Kuppuswamy Sathyanarayanan (10): > PCI/ERR: Update error status after reset_link() > PCI: move {pciehp,shpchp}_is_native() definitions to pci.c > PCI/DPC: Fix DPC recovery issue in non hotplug case > PCI/ERR: Remove service dependency in pcie_do_recovery() > PCI/ERR: Return status of pcie_do_recovery() > PCI/DPC: Cache DPC capabilities in pci_init_capabilities() > PCI/AER: Add pci_aer_raw_clear_status() to unconditionally clear Error > Status > PCI/DPC: Expose dpc_process_error(), dpc_reset_link() for use by EDR > PCI/DPC: Add Error Disconnect Recover (EDR) support > PCI/AER: Rationalize error status register clearing Applied to pci/edr for v5.7, except these two: PCI: move {pciehp,shpchp}_is_native() definitions to pci.c PCI/DPC: Fix DPC recovery issue in non hotplug case > Documentation/PCI/pcieaer-howto.rst | 23 +- > drivers/acpi/pci_root.c | 15 ++ > drivers/net/ethernet/intel/ice/ice_main.c | 4 +- > drivers/ntb/hw/idt/ntb_hw_idt.c | 4 +- > drivers/pci/pci-acpi.c | 40 +--- > drivers/pci/pci.c | 40 +++- > drivers/pci/pci.h | 13 +- > drivers/pci/pcie/Kconfig | 10 + > drivers/pci/pcie/Makefile | 1 + > drivers/pci/pcie/aer.c | 40 ++-- > drivers/pci/pcie/dpc.c | 145 ++++++------- > drivers/pci/pcie/edr.c | 251 ++++++++++++++++++++++ > drivers/pci/pcie/err.c | 67 ++---- > drivers/pci/pcie/portdrv.h | 5 - > drivers/pci/pcie/portdrv_core.c | 21 -- > drivers/pci/probe.c | 2 + > drivers/scsi/lpfc/lpfc_attr.c | 4 +- > include/linux/acpi.h | 6 +- > include/linux/aer.h | 9 +- > include/linux/pci-acpi.h | 8 + > include/linux/pci.h | 6 + > include/linux/pci_hotplug.h | 7 +- > 22 files changed, 471 insertions(+), 250 deletions(-) > create mode 100644 drivers/pci/pcie/edr.c > > -- > 2.17.1 >
