linux/drivers/ras/amd/atl/Kconfig

# SPDX-License-Identifier: GPL-2.0-or-later
#
# AMD Address Translation Library Kconfig
#
# Copyright (c) 2023, Advanced Micro Devices, Inc.
# All Rights Reserved.
#
# Author: Yazen Ghannam <Yazen.Ghannam@amd.com>

config AMD_ATL
	tristate "AMD Address Translation Library"
	depends on AMD_NB && X86_64 && RAS
	depends on AMD_NODE
	depends on MEMORY_FAILURE
	default N
	help
	  This library includes support for implementation-specific
	  address translation procedures needed for various error
	  handling cases.

	  Enable this option if using DRAM ECC on Zen-based systems
	  and OS-based error handling.

config AMD_ATL_PRM
	depends on AMD_ATL && ACPI_PRMT
	def_bool y
RAS: Introduce AMD Address Translation Library AMD Zen-based systems report memory errors through Machine Check banks representing Unified Memory Controllers (UMCs). The address value reported for DRAM ECC errors is a "normalized address" that is relative to the UMC. This normalized address must be converted to a system physical address to be usable by the OS. Support for this address translation was introduced to the MCA subsystem with Zen1 systems. The code was later moved to the AMD64 EDAC module, since this was the only user of the code at the time. However, there are uses for this translation outside of EDAC. The system physical address can be used in MCA for preemptive page offlining as done in some MCA notifier functions. Also, this translation is needed as the basis of similar functionality needed for some CXL configurations on AMD systems. Introduce a common address translation library that can be used for multiple subsystems including MCA, EDAC, and CXL. Include support for UMC normalized to system physical address translation for current CPU systems. The Data Fabric Indirect register access offsets and one of the register fields were changed. Default to the current offsets and register field definition. And fallback to the older values if running on a "legacy" system. Provide built-in code to facilitate the loading and unloading of the library module without affecting other modules or built-in code. Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20240123041401.79812-2-yazen.ghannam@amd.com 2024-01-22 22:13:59 -06:00			`# SPDX-License-Identifier: GPL-2.0-or-later`
			`#`
			`# AMD Address Translation Library Kconfig`
			`#`
			`# Copyright (c) 2023, Advanced Micro Devices, Inc.`
			`# All Rights Reserved.`
			`#`
			`# Author: Yazen Ghannam <Yazen.Ghannam@amd.com>`

			`config AMD_ATL`
			`tristate "AMD Address Translation Library"`
			`depends on AMD_NB && X86_64 && RAS`
x86/amd_nb: Move SMN access code to a new amd_node driver SMN access was bolted into amd_nb mostly as convenience. This has limitations though that require incurring tech debt to keep it working. Move SMN access to the newly introduced AMD Node driver. Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> # pdx86 Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> # PMF, PMC Link: https://lore.kernel.org/r/20241206161210.163701-11-yazen.ghannam@amd.com 2024-12-06 16:12:03 +00:00			`depends on AMD_NODE`
RAS/AMD/ATL: Add MI300 row retirement support DRAM row retirement depends on model-specific information that is best done within the AMD Address Translation Library. Export a generic wrapper function for other modules to use. Add any model-specific helpers here. Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20240214033516.1344948-2-yazen.ghannam@amd.com 2024-02-13 21:35:15 -06:00			`depends on MEMORY_FAILURE`
RAS: Introduce AMD Address Translation Library AMD Zen-based systems report memory errors through Machine Check banks representing Unified Memory Controllers (UMCs). The address value reported for DRAM ECC errors is a "normalized address" that is relative to the UMC. This normalized address must be converted to a system physical address to be usable by the OS. Support for this address translation was introduced to the MCA subsystem with Zen1 systems. The code was later moved to the AMD64 EDAC module, since this was the only user of the code at the time. However, there are uses for this translation outside of EDAC. The system physical address can be used in MCA for preemptive page offlining as done in some MCA notifier functions. Also, this translation is needed as the basis of similar functionality needed for some CXL configurations on AMD systems. Introduce a common address translation library that can be used for multiple subsystems including MCA, EDAC, and CXL. Include support for UMC normalized to system physical address translation for current CPU systems. The Data Fabric Indirect register access offsets and one of the register fields were changed. Default to the current offsets and register field definition. And fallback to the older values if running on a "legacy" system. Provide built-in code to facilitate the loading and unloading of the library module without affecting other modules or built-in code. Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20240123041401.79812-2-yazen.ghannam@amd.com 2024-01-22 22:13:59 -06:00			`default N`
			`help`
			`This library includes support for implementation-specific`
			`address translation procedures needed for various error`
			`handling cases.`

			`Enable this option if using DRAM ECC on Zen-based systems`
			`and OS-based error handling.`
RAS/AMD/ATL: Translate normalized to system physical addresses using PRM AMD Zen-based systems report memory error addresses through machine check banks representing Unified Memory Controllers (UMCs) in the form of UMC relative "normalized" addresses. A normalized address must be converted to a system physical address to be usable by the OS. Future AMD platforms will provide a UEFI PRM module that implements a number of address translation PRM handlers. This will provide an interface for the OS to call platform specific code without requiring the use of SMM or other heavy firmware operations. Add support for the normalized to system physical address translation PRM handler in the AMD Address Translation Library and prefer it over native code if available. The GUID and parameter buffer structure are specific to the normalized to system physical address handler provided by the address translation PRM module included in future AMD systems. The address translation PRM module is documented in chapter 22 of the publicly available "AMD Family 1Ah Models 00h–0Fh and Models 10h–1Fh ACPI v6.5 Porting Guide". [ bp: Massage commit message. ] Signed-off-by: John Allen <john.allen@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20240730151731.15363-3-john.allen@amd.com 2024-07-30 15:17:31 +00:00
			`config AMD_ATL_PRM`
			`depends on AMD_ATL && ACPI_PRMT`
			`def_bool y`