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linux/Documentation/ABI/testing/sysfs-bus-platform-devices-ampere-smpro
Quan Nguyen c2c99326cc misc: smpro-errmon: Add dimm training failure syndrome 
Adds event_dimm[0-15]_syndrome sysfs to report the failure syndrome
to BMC when DIMM training failed.

Signed-off-by: Quan Nguyen <quan@os.amperecomputing.com>
Link: https://lore.kernel.org/r/20230310083416.3670980-3-quan@os.amperecomputing.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-10 09:47:16 +01:00

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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 |
+-----------------+------------+----------+----------------+----------------------------------------+
| GIC (other) | 5 | 3 | ERR3 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| GIC (other) | 5 | 4 | ERR4 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| GIC (other) | 5 | 5 | ERR5 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| GIC (other) | 5 | 6 | ERR6 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| GIC (other) | 5 | 7 | ERR7 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| GIC (other) | 5 | 8 | ERR8 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| GIC (other) | 5 | 9 | ERR9 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| GIC (other) | 5 | 10 | ERR10 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| GIC (other) | 5 | 11 | ERR11 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| GIC (other) | 5 | 12 | ERR12 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| GIC (other) | 5 | 13-21 | ERR13 | RC # + 1 |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMMU (other) | 6 | TCU | 100 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMMU (other) | 6 | TBU0 | 0 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMMU (other) | 6 | TBU1 | 1 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMMU (other) | 6 | TBU2 | 2 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMMU (other) | 6 | TBU3 | 3 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMMU (other) | 6 | TBU4 | 4 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMMU (other) | 6 | TBU5 | 5 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMMU (other) | 6 | TBU6 | 6 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMMU (other) | 6 | TBU7 | 7 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMMU (other) | 6 | TBU8 | 8 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMMU (other) | 6 | TBU9 | 9 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| PCIe AER (pcie) | 7 | Root | 0 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| PCIe AER (pcie) | 7 | Device | 1 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| PCIe RC (pcie) | 8 | RCA HB | 0 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| PCIe RC (pcie) | 8 | RCB HB | 1 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| PCIe RC (pcie) | 8 | RASDP | 8 | RC # |
+-----------------+------------+----------+----------------+----------------------------------------+
| OCM (other) | 9 | ERR0 | 0 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| OCM (other) | 9 | ERR1 | 1 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| OCM (other) | 9 | ERR2 | 2 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMpro (other) | 10 | ERR0 | 0 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMpro (other) | 10 | ERR1 | 1 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| SMpro (other) | 10 | MPA_ERR | 2 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| PMpro (other) | 11 | ERR0 | 0 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| PMpro (other) | 11 | ERR1 | 1 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
| PMpro (other) | 11 | MPA_ERR | 2 | 0 |
+-----------------+------------+----------+----------------+----------------------------------------+
Example::
# cat error_other_ue
880807001e004010401040101500000001004010401040100c0000000000000000000000000000000000000000000000
The detail of each sysfs entries is as below:
+-------------+---------------------------------------------------------+----------------------------------+
| Error | Sysfs entry | Description (when triggered) |
+-------------+---------------------------------------------------------+----------------------------------+
| Core's CE | /sys/bus/platform/devices/smpro-errmon.*/error_core_ce | Core has CE error |
+-------------+---------------------------------------------------------+----------------------------------+
| Core's UE | /sys/bus/platform/devices/smpro-errmon.*/error_core_ue | Core has UE error |
+-------------+---------------------------------------------------------+----------------------------------+
| Memory's CE | /sys/bus/platform/devices/smpro-errmon.*/error_mem_ce | Memory has CE error |
+-------------+---------------------------------------------------------+----------------------------------+
| Memory's UE | /sys/bus/platform/devices/smpro-errmon.*/error_mem_ue | Memory has UE error |
+-------------+---------------------------------------------------------+----------------------------------+
| PCIe's CE | /sys/bus/platform/devices/smpro-errmon.*/error_pcie_ce | any PCIe controller has CE error |
+-------------+---------------------------------------------------------+----------------------------------+
| PCIe's UE | /sys/bus/platform/devices/smpro-errmon.*/error_pcie_ue | any PCIe controller has UE error |
+-------------+---------------------------------------------------------+----------------------------------+
| Other's CE | /sys/bus/platform/devices/smpro-errmon.*/error_other_ce | any other CE error |
+-------------+---------------------------------------------------------+----------------------------------+
| Other's UE | /sys/bus/platform/devices/smpro-errmon.*/error_other_ue | any other UE error |
+-------------+---------------------------------------------------------+----------------------------------+
UE: Uncorrect-able Error
CE: Correct-able Error
For details, see section `3.3 Ampere (Vendor-Specific) Error Record Formats,
Altra Family RAS Supplement`.
What: /sys/bus/platform/devices/smpro-errmon.*/overflow_[core|mem|pcie|other]_[ce|ue]
KernelVersion: 6.1
Contact: Quan Nguyen <quan@os.amperecomputing.com>
Description:
(RO) Return the overflow status of each type HW error reported:
- 0 : No overflow
- 1 : There is an overflow and the oldest HW errors are dropped
The detail of each sysfs entries is as below:
+-------------+-----------------------------------------------------------+---------------------------------------+
| Overflow | Sysfs entry | Description |
+-------------+-----------------------------------------------------------+---------------------------------------+
| Core's CE | /sys/bus/platform/devices/smpro-errmon.*/overflow_core_ce | Core CE error overflow |
+-------------+-----------------------------------------------------------+---------------------------------------+
| Core's UE | /sys/bus/platform/devices/smpro-errmon.*/overflow_core_ue | Core UE error overflow |
+-------------+-----------------------------------------------------------+---------------------------------------+
| Memory's CE | /sys/bus/platform/devices/smpro-errmon.*/overflow_mem_ce | Memory CE error overflow |
+-------------+-----------------------------------------------------------+---------------------------------------+
| Memory's UE | /sys/bus/platform/devices/smpro-errmon.*/overflow_mem_ue | Memory UE error overflow |
+-------------+-----------------------------------------------------------+---------------------------------------+
| PCIe's CE | /sys/bus/platform/devices/smpro-errmon.*/overflow_pcie_ce | any PCIe controller CE error overflow |
+-------------+-----------------------------------------------------------+---------------------------------------+
| PCIe's UE | /sys/bus/platform/devices/smpro-errmon.*/overflow_pcie_ue | any PCIe controller UE error overflow |
+-------------+-----------------------------------------------------------+---------------------------------------+
| Other's CE | /sys/bus/platform/devices/smpro-errmon.*/overflow_other_ce| any other CE error overflow |
+-------------+-----------------------------------------------------------+---------------------------------------+
| Other's UE | /sys/bus/platform/devices/smpro-errmon.*/overflow_other_ue| other UE error overflow |
+-------------+-----------------------------------------------------------+---------------------------------------+
where:
- UE: Uncorrect-able Error
- CE: Correct-able Error
What: /sys/bus/platform/devices/smpro-errmon.*/[error|warn]_[smpro|pmpro]
KernelVersion: 6.1
Contact: Quan Nguyen <quan@os.amperecomputing.com>
Description:
(RO) Contains the internal firmware error/warning printed as hex format.
The detail of each sysfs entries is as below:
+---------------+------------------------------------------------------+--------------------------+
| Error | Sysfs entry | Description |
+---------------+------------------------------------------------------+--------------------------+
| SMpro error | /sys/bus/platform/devices/smpro-errmon.*/error_smpro | system has SMpro error |
+---------------+------------------------------------------------------+--------------------------+
| SMpro warning | /sys/bus/platform/devices/smpro-errmon.*/warn_smpro | system has SMpro warning |
+---------------+------------------------------------------------------+--------------------------+
| PMpro error | /sys/bus/platform/devices/smpro-errmon.*/error_pmpro | system has PMpro error |
+---------------+------------------------------------------------------+--------------------------+
| PMpro warning | /sys/bus/platform/devices/smpro-errmon.*/warn_pmpro | system has PMpro warning |
+---------------+------------------------------------------------------+--------------------------+
For details, see section `5.10 RAS Internal Error Register Definitions,
Altra Family Soc BMC Interface Specification`.
What: /sys/bus/platform/devices/smpro-errmon.*/event_[vrd_warn_fault|vrd_hot|dimm_hot|dimm_2x_refresh]
KernelVersion: 6.1 (event_[vrd_warn_fault|vrd_hot|dimm_hot]), 6.4 (event_dimm_2x_refresh)
Contact: Quan Nguyen <quan@os.amperecomputing.com>
Description:
(RO) Contains the detail information in case of VRD/DIMM warning/hot events
in hex format as below::
AAAA
where:
- ``AAAA``: The event detail information data
The detail of each sysfs entries is as below:
+---------------+---------------------------------------------------------------+---------------------+
| Event | Sysfs entry | Description |
+---------------+---------------------------------------------------------------+---------------------+
| VRD HOT | /sys/bus/platform/devices/smpro-errmon.*/event_vrd_hot | VRD Hot |
+---------------+---------------------------------------------------------------+---------------------+
| VR Warn/Fault | /sys/bus/platform/devices/smpro-errmon.*/event_vrd_warn_fault | VR Warning or Fault |
+---------------+---------------------------------------------------------------+---------------------+
| DIMM HOT | /sys/bus/platform/devices/smpro-errmon.*/event_dimm_hot | DIMM Hot |
+---------------+---------------------------------------------------------------+---------------------+
| DIMM 2X | /sys/bus/platform/devices/smpro-errmon.*/event_dimm_2x_refresh| DIMM 2x refresh rate|
| REFRESH RATE | | event in high temp |
+---------------+---------------------------------------------------------------+---------------------+
For more details, see section `5.7 GPI Status Registers and 5.9 Memory Error Register Definitions,
Altra Family Soc BMC Interface Specification`.
What: /sys/bus/platform/devices/smpro-errmon.*/event_dimm[0-15]_syndrome
KernelVersion: 6.4
Contact: Quan Nguyen <quan@os.amperecomputing.com>
Description:
(RO) The sysfs returns the 2-byte DIMM failure syndrome data for slot
0-15 if it failed to initialize.
For more details, see section `5.11 Boot Stage Register Definitions,
Altra Family Soc BMC Interface Specification`.
What: /sys/bus/platform/devices/smpro-misc.*/boot_progress
KernelVersion: 6.1
Contact: Quan Nguyen <quan@os.amperecomputing.com>
Description:
(RO) Contains the boot stages information in hex as format below::
AABBCCCCCCCC
where:
- ``AA`` : The boot stages
- 00: SMpro firmware booting
- 01: PMpro firmware booting
- 02: ATF BL1 firmware booting
- 03: DDR initialization
- 04: DDR training report status
- 05: ATF BL2 firmware booting
- 06: ATF BL31 firmware booting
- 07: ATF BL32 firmware booting
- 08: UEFI firmware booting
- 09: OS booting
- ``BB`` : Boot status
- 00: Not started
- 01: Started
- 02: Completed without error
- 03: Failed.
- ``CCCCCCCC``: Boot status information defined for each boot stages
For details, see section `5.11 Boot Stage Register Definitions`
and section `6. Processor Boot Progress Codes, Altra Family Soc BMC
Interface Specification`.
What: /sys/bus/platform/devices/smpro-misc*/soc_power_limit
KernelVersion: 6.1
Contact: Quan Nguyen <quan@os.amperecomputing.com>
Description:
(RW) Contains the desired SoC power limit in Watt.
Writes to this sysfs set the desired SoC power limit (W).
Reads from this register return the current SoC power limit (W).
The value ranges:
- Minimum: 120 W
- Maximum: Socket TDP power
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