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Subject[PATCH v11 0/8] Add Error Disconnect Recover (EDR) support
Date
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

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 (8):
PCI/ERR: Update error status after reset_link()
PCI/DPC: Allow dpc_probe() even if firmware first mode is enabled
PCI/DPC: Add dpc_process_error() wrapper function
PCI/DPC: Add Error Disconnect Recover (EDR) support
PCI/AER: Allow clearing Error Status Register in FF mode
PCI/DPC: Update comments related to DPC recovery on NON_FATAL errors
PCI/DPC: Clear AER registers in EDR mode
PCI/ACPI: Enable EDR support

Documentation/PCI/pcieaer-howto.rst | 2 +-
drivers/acpi/pci_root.c | 9 +
drivers/net/ethernet/intel/ice/ice_main.c | 2 +-
drivers/ntb/hw/idt/ntb_hw_idt.c | 2 +-
drivers/pci/pci-acpi.c | 98 ++++++++++
drivers/pci/pci.c | 2 +-
drivers/pci/pci.h | 2 +-
drivers/pci/pcie/Kconfig | 10 +
drivers/pci/pcie/aer.c | 16 +-
drivers/pci/pcie/dpc.c | 214 ++++++++++++++++++++--
drivers/pci/pcie/err.c | 12 +-
drivers/pci/pcie/portdrv_core.c | 7 +-
drivers/pci/probe.c | 1 +
drivers/scsi/lpfc/lpfc_attr.c | 2 +-
include/linux/acpi.h | 6 +-
include/linux/aer.h | 12 +-
include/linux/pci-acpi.h | 11 ++
include/linux/pci.h | 3 +-
18 files changed, 365 insertions(+), 46 deletions(-)

--
2.21.0

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