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SubjectRe: [PATCH v14 0/5] Add Error Disconnect Recover (EDR) support
On Fri, Feb 07, 2020 at 04:03:30PM -0800, sathyanarayanan.kuppuswamy@linux.intel.com wrote:
> From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
>
> 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

Hi Sathy,

Bad timing! Linus tagged v5.6-rc1 on Feb 9, shortly after you posted
this. Would you mind refreshing this so it applies on my "master"
branch (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
>
> Kuppuswamy Sathyanarayanan (5):
> PCI/ERR: Update error status after reset_link()
> PCI/DPC: Remove pcie_device reference from dpc_dev structure
> PCI/EDR: Export AER, DPC and error recovery functions
> PCI/DPC: Add Error Disconnect Recover (EDR) support
> PCI/ACPI: Enable EDR support
>
> drivers/acpi/pci_root.c | 16 +++
> drivers/pci/pci-acpi.c | 3 +
> drivers/pci/pci.h | 8 ++
> drivers/pci/pcie/Kconfig | 10 ++
> drivers/pci/pcie/Makefile | 1 +
> drivers/pci/pcie/aer.c | 39 ++++--
> drivers/pci/pcie/dpc.c | 92 ++++++++------
> drivers/pci/pcie/dpc.h | 20 +++
> drivers/pci/pcie/edr.c | 259 ++++++++++++++++++++++++++++++++++++++
> drivers/pci/pcie/err.c | 35 ++++--
> drivers/pci/probe.c | 1 +
> include/linux/acpi.h | 6 +-
> include/linux/pci-acpi.h | 8 ++
> include/linux/pci.h | 1 +
> 14 files changed, 441 insertions(+), 58 deletions(-)
> create mode 100644 drivers/pci/pcie/dpc.h
> create mode 100644 drivers/pci/pcie/edr.c
>
> --
> 2.21.0
>

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