Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro

File Facts

System

Linux kernel

Corpus path

Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro

Extension

[no extension]

Size

24321 bytes

Lines

326

Domain

Support Tooling And Documentation

Bucket

Documentation

Inferred role

Support Tooling And Documentation: Documentation

Status

atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

What:		/sys/bus/platform/devices/smpro-errmon.*/error_[core|mem|pcie|other]_[ce|ue]
KernelVersion:	6.1
Contact:	Quan Nguyen <quan@os.amperecomputing.com>
Description:
		(RO) Contains the 48-byte Ampere (Vendor-Specific) Error Record printed
		in hex format according to the table below:

		+--------+---------------+-------------+------------------------------------------------------------+
		| Offset |     Field     | Size (byte) |                     Description                            |
		+--------+---------------+-------------+------------------------------------------------------------+
		| 00     | Error Type    | 1           | See :ref:`the table below <smpro-error-types>` for details |
		+--------+---------------+-------------+------------------------------------------------------------+
		| 01     | Subtype       | 1           | See :ref:`the table below <smpro-error-types>` for details |
		+--------+---------------+-------------+------------------------------------------------------------+
		| 02     | Instance      | 2           | See :ref:`the table below <smpro-error-types>` for details |
		+--------+---------------+-------------+------------------------------------------------------------+
		| 04     | Error status  | 4           | See ARM RAS specification for details                      |
		+--------+---------------+-------------+------------------------------------------------------------+
		| 08     | Error Address | 8           | See ARM RAS specification for details                      |
		+--------+---------------+-------------+------------------------------------------------------------+
		| 16     | Error Misc 0  | 8           | See ARM RAS specification for details                      |
		+--------+---------------+-------------+------------------------------------------------------------+
		| 24     | Error Misc 1  | 8           | See ARM RAS specification for details                      |
		+--------+---------------+-------------+------------------------------------------------------------+
		| 32     | Error Misc 2  | 8           | See ARM RAS specification for details                      |
		+--------+---------------+-------------+------------------------------------------------------------+
		| 40     | Error Misc 3  | 8           | See ARM RAS specification for details                      |
		+--------+---------------+-------------+------------------------------------------------------------+

		The table below defines the value of error types, their subtype, subcomponent and instance:

		.. _smpro-error-types:

		+-----------------+------------+----------+----------------+----------------------------------------+
		|   Error Group   | Error Type | Sub type | Sub component  |               Instance                 |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| CPM (core)      | 0          | 0        | Snoop-Logic    | CPM #                                  |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| CPM (core)      | 0          | 2        | Armv8 Core 1   | CPM #                                  |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| MCU (mem)       | 1          | 1        | ERR1           | MCU # \| SLOT << 11                    |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| MCU (mem)       | 1          | 2        | ERR2           | MCU # \| SLOT << 11                    |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| MCU (mem)       | 1          | 3        | ERR3           | MCU #                                  |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| MCU (mem)       | 1          | 4        | ERR4           | MCU #                                  |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| MCU (mem)       | 1          | 5        | ERR5           | MCU #                                  |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| MCU (mem)       | 1          | 6        | ERR6           | MCU #                                  |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| MCU (mem)       | 1          | 7        | Link Error     | MCU #                                  |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| Mesh (other)    | 2          | 0        | Cross Point    | X \| (Y << 5) \| NS <<11               |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| Mesh (other)    | 2          | 1        | Home Node(IO)  | X \| (Y << 5) \| NS <<11               |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| Mesh (other)    | 2          | 2        | Home Node(Mem) | X \| (Y << 5) \| NS <<11 \| device<<12 |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| Mesh (other)    | 2          | 4        | CCIX Node      | X \| (Y << 5) \| NS <<11               |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| 2P Link (other) | 3          | 0        | N/A            | Altra 2P Link #                        |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| GIC (other)     | 5          | 0        | ERR0           | 0                                      |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| GIC (other)     | 5          | 1        | ERR1           | 0                                      |
		+-----------------+------------+----------+----------------+----------------------------------------+
		| GIC (other)     | 5          | 2        | ERR2           | 0                                      |
		+-----------------+------------+----------+----------------+----------------------------------------+

Annotation

• Atlas domain: Support Tooling And Documentation / Documentation.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.