diff options
| author | Adham Faris <afaris@nvidia.com> | 2023-08-07 21:05:07 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-08-10 01:52:16 +0300 |
| commit | 1f507e80c700e31e358bf4213dc7e4dd614c7c72 (patch) | |
| tree | dd86c06009b74686a924bc683990f47ac9bfbe8c /include/linux/mlx5/driver.h | |
| parent | 383a4de3b44744b194848089db9e13ec98af2881 (diff) | |
| download | linux-1f507e80c700e31e358bf4213dc7e4dd614c7c72.tar.xz | |
net/mlx5: Expose NIC temperature via hardware monitoring kernel API
Expose NIC temperature by implementing hwmon kernel API, which turns
current thermal zone kernel API to redundant.
For each one of the supported and exposed thermal diode sensors, expose
the following attributes:
1) Input temperature.
2) Highest temperature.
3) Temperature label:
Depends on the firmware capability, if firmware doesn't support
sensors naming, the fallback naming convention would be: "sensorX",
where X is the HW spec (MTMP register) sensor index.
4) Temperature critical max value:
refers to the high threshold of Warning Event. Will be exposed as
`tempY_crit` hwmon attribute (RO attribute). For example for
ConnectX5 HCA's this temperature value will be 105 Celsius, 10
degrees lower than the HW shutdown temperature).
5) Temperature reset history: resets highest temperature.
For example, for dualport ConnectX5 NIC with a single IC thermal diode
sensor will have 2 hwmon directories (one for each PCI function)
under "/sys/class/hwmon/hwmon[X,Y]".
Listing one of the directories above (hwmonX/Y) generates the
corresponding output below:
$ grep -H -d skip . /sys/class/hwmon/hwmon0/*
Output
=======================================================================
/sys/class/hwmon/hwmon0/name:mlx5
/sys/class/hwmon/hwmon0/temp1_crit:105000
/sys/class/hwmon/hwmon0/temp1_highest:48000
/sys/class/hwmon/hwmon0/temp1_input:46000
/sys/class/hwmon/hwmon0/temp1_label:asic
grep: /sys/class/hwmon/hwmon0/temp1_reset_history: Permission denied
In addition, displaying the sensors data via lm_sensors generates the
corresponding output below:
$ sensors
Output
=======================================================================
mlx5-pci-0800
Adapter: PCI adapter
asic: +46.0°C (crit = +105.0°C, highest = +48.0°C)
mlx5-pci-0801
Adapter: PCI adapter
asic: +46.0°C (crit = +105.0°C, highest = +48.0°C)
CC: Jean Delvare <jdelvare@suse.com>
Signed-off-by: Adham Faris <afaris@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20230807180507.22984-3-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux/mlx5/driver.h')
| -rw-r--r-- | include/linux/mlx5/driver.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 3e1017d764b7..e1c7e502a4fc 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -134,6 +134,7 @@ enum { MLX5_REG_PCAM = 0x507f, MLX5_REG_NODE_DESC = 0x6001, MLX5_REG_HOST_ENDIANNESS = 0x7004, + MLX5_REG_MTCAP = 0x9009, MLX5_REG_MTMP = 0x900A, MLX5_REG_MCIA = 0x9014, MLX5_REG_MFRL = 0x9028, @@ -805,7 +806,7 @@ struct mlx5_core_dev { struct mlx5_rsc_dump *rsc_dump; u32 vsc_addr; struct mlx5_hv_vhca *hv_vhca; - struct mlx5_thermal *thermal; + struct mlx5_hwmon *hwmon; u64 num_block_tc; u64 num_block_ipsec; }; |