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From: sathyanarayanan.kuppuswamy@linux.intel.com
To: bhelgaas@google.com
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
ashok.raj@intel.com, keith.busch@intel.com,
sathyanarayanan.kuppuswamy@linux.intel.com
Subject: [PATCH v9 0/8] Add Error Disconnect Recover (EDR) support
Date: Thu, 3 Oct 2019 16:38:56 -0700
Message-Id: <cover.1570145778.git.sathyanarayanan.kuppuswamy@linux.intel.com>
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Add Error Disconnect Recover (EDR) support
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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 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 drivers/acpi/pci_root.c | 9 ++ drivers/pci/pci-acpi.c | 91 +++++++++++++++ drivers/pci/pcie/Kconfig | 10 ++ drivers/pci/pcie/aer.c | 12 +- drivers/pci/pcie/dpc.c | 194 +++++++++++++++++++++++++++++--- drivers/pci/pcie/err.c | 10 +- drivers/pci/pcie/portdrv_core.c | 8 +- drivers/pci/probe.c | 1 + include/linux/acpi.h | 6 +- include/linux/pci-acpi.h | 11 ++ include/linux/pci.h | 3 +- 11 files changed, 321 insertions(+), 34 deletions(-)