4446fcf220
Expose power1_max_interval, that is the tau corresponding to PL1, as a custom hwmon attribute. Some bit manipulation is needed because of the format of PKG_PWR_LIM_1_TIME in PACKAGE_RAPL_LIMIT register (1.x * power(2,y)) v2: Get rpm wake ref while accessing power1_max_interval v3: %s/hwmon/xe_hwmon/ v4: - As power1_max_interval is rw attr take lock in read function as well - Refine comment about val to fix point conversion (Andi) - Update kernel version and date in doc v5: Fix review comments (Anshuman) Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com> Signed-off-by: Badal Nilawar <badal.nilawar@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20231030115618.1382200-4-badal.nilawar@intel.com Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
71 lines
2.5 KiB
Plaintext
71 lines
2.5 KiB
Plaintext
What: /sys/devices/.../hwmon/hwmon<i>/power1_max
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Date: September 2023
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KernelVersion: 6.5
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Contact: intel-xe@lists.freedesktop.org
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Description: RW. Card reactive sustained (PL1) power limit in microwatts.
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The power controller will throttle the operating frequency
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if the power averaged over a window (typically seconds)
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exceeds this limit. A read value of 0 means that the PL1
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power limit is disabled, writing 0 disables the
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limit. Writing values > 0 and <= TDP will enable the power limit.
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Only supported for particular Intel xe graphics platforms.
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What: /sys/devices/.../hwmon/hwmon<i>/power1_rated_max
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Date: September 2023
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KernelVersion: 6.5
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Contact: intel-xe@lists.freedesktop.org
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Description: RO. Card default power limit (default TDP setting).
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Only supported for particular Intel xe graphics platforms.
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What: /sys/devices/.../hwmon/hwmon<i>/power1_crit
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Date: September 2023
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KernelVersion: 6.5
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Contact: intel-xe@lists.freedesktop.org
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Description: RW. Card reactive critical (I1) power limit in microwatts.
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Card reactive critical (I1) power limit in microwatts is exposed
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for client products. The power controller will throttle the
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operating frequency if the power averaged over a window exceeds
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this limit.
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Only supported for particular Intel xe graphics platforms.
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What: /sys/devices/.../hwmon/hwmon<i>/curr1_crit
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Date: September 2023
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KernelVersion: 6.5
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Contact: intel-xe@lists.freedesktop.org
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Description: RW. Card reactive critical (I1) power limit in milliamperes.
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Card reactive critical (I1) power limit in milliamperes is
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exposed for server products. The power controller will throttle
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the operating frequency if the power averaged over a window
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exceeds this limit.
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What: /sys/devices/.../hwmon/hwmon<i>/in0_input
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Date: September 2023
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KernelVersion: 6.5
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Contact: intel-xe@lists.freedesktop.org
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Description: RO. Current Voltage in millivolt.
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Only supported for particular Intel xe graphics platforms.
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What: /sys/devices/.../hwmon/hwmon<i>/energy1_input
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Date: September 2023
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KernelVersion: 6.5
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Contact: intel-xe@lists.freedesktop.org
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Description: RO. Energy input of device in microjoules.
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Only supported for particular Intel xe graphics platforms.
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What: /sys/devices/.../hwmon/hwmon<i>/power1_max_interval
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Date: October 2023
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KernelVersion: 6.6
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Contact: intel-xe@lists.freedesktop.org
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Description: RW. Sustained power limit interval (Tau in PL1/Tau) in
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milliseconds over which sustained power is averaged.
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Only supported for particular Intel xe graphics platforms.
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