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Add support for decoding NVIDIA-specific CPER sections delivered via the APEI GHES vendor record notifier chain. NVIDIA hardware generates vendor-specific CPER sections containing error signatures and diagnostic register dumps. This implementation registers a notifier_block with the GHES vendor record notifier and decodes these sections, printing error details via dev_info(). The driver binds to ACPI device NVDA2012, present on NVIDIA server platforms. The NVIDIA CPER section contains a fixed header with error metadata (signature, error type, severity, socket) followed by variable-length register address-value pairs for hardware diagnostics. This work is based on libcper [1]. Example output: nvidia-ghes NVDA2012:00: NVIDIA CPER section, error_data_length: 544 nvidia-ghes NVDA2012:00: signature: CMET-INFO nvidia-ghes NVDA2012:00: error_type: 0 nvidia-ghes NVDA2012:00: error_instance: 0 nvidia-ghes NVDA2012:00: severity: 3 nvidia-ghes NVDA2012:00: socket: 0 nvidia-ghes NVDA2012:00: number_regs: 32 nvidia-ghes NVDA2012:00: instance_base: 0x0000000000000000 nvidia-ghes NVDA2012:00: register[0]: address=0x8000000100000000 value=0x0000000100000000 https://github.com/openbmc/libcper/commit/683e055061ce [1] Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Signed-off-by: Kai-Heng Feng <kaihengf@nvidia.com> [ rjw: Changelog edits ] Link: https://patch.msgid.link/20260330094203.38022-4-kaihengf@nvidia.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
99 lines
3.1 KiB
Plaintext
99 lines
3.1 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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config HAVE_ACPI_APEI
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bool
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config HAVE_ACPI_APEI_NMI
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bool
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config ACPI_APEI
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bool "ACPI Platform Error Interface (APEI)"
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select MISC_FILESYSTEMS
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select PSTORE
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select UEFI_CPER
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depends on HAVE_ACPI_APEI
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help
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APEI allows to report errors (for example from the chipset)
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to the operating system. This improves NMI handling
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especially. In addition it supports error serialization and
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error injection.
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config ACPI_APEI_GHES
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bool "APEI Generic Hardware Error Source"
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depends on ACPI_APEI
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select ACPI_HED
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select IRQ_WORK
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select GENERIC_ALLOCATOR
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select ARM_SDE_INTERFACE if ARM64
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help
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Generic Hardware Error Source provides a way to report
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platform hardware errors (such as that from chipset). It
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works in so called "Firmware First" mode, that is, hardware
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errors are reported to firmware firstly, then reported to
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Linux by firmware. This way, some non-standard hardware
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error registers or non-standard hardware link can be checked
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by firmware to produce more valuable hardware error
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information for Linux.
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config ACPI_APEI_PCIEAER
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bool "APEI PCIe AER logging/recovering support"
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depends on ACPI_APEI && PCIEAER
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help
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PCIe AER errors may be reported via APEI firmware first mode.
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Turn on this option to enable the corresponding support.
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config ACPI_APEI_SEA
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bool
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depends on ARM64 && ACPI_APEI_GHES
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default y
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config ACPI_APEI_MEMORY_FAILURE
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bool "APEI memory error recovering support"
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depends on ACPI_APEI && MEMORY_FAILURE
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help
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Memory errors may be reported via APEI firmware first mode.
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Turn on this option to enable the memory recovering support.
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config ACPI_APEI_EINJ
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tristate "APEI Error INJection (EINJ)"
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depends on ACPI_APEI && DEBUG_FS
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help
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EINJ provides a hardware error injection mechanism, it is
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mainly used for debugging and testing the other parts of
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APEI and some other RAS features.
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config ACPI_APEI_EINJ_CXL
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bool "CXL Error INJection Support"
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default ACPI_APEI_EINJ
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depends on ACPI_APEI_EINJ
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depends on CXL_BUS && CXL_BUS <= ACPI_APEI_EINJ
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help
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Support for CXL protocol Error INJection through debugfs/cxl.
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Availability and which errors are supported is dependent on
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the host platform. Look to ACPI v6.5 section 18.6.4 and kernel
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EINJ documentation for more information.
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If unsure say 'n'
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config ACPI_APEI_GHES_NVIDIA
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tristate "NVIDIA GHES vendor record handler"
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depends on ACPI_APEI_GHES
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help
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Support for decoding NVIDIA-specific CPER sections delivered via
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the APEI GHES vendor record notifier chain. Registers a handler
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for the NVIDIA section GUID and logs error signatures, severity,
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socket, and diagnostic register address-value pairs.
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Enable on NVIDIA server platforms (e.g. DGX, HGX) that expose
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ACPI device NVDA2012 in their firmware tables.
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If unsure, say N.
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config ACPI_APEI_ERST_DEBUG
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tristate "APEI Error Record Serialization Table (ERST) Debug Support"
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depends on ACPI_APEI
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help
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ERST is a way provided by APEI to save and retrieve hardware
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error information to and from a persistent store. Enable this
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if you want to debugging and testing the ERST kernel support
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and firmware implementation.
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