What:		/sys/kernel/debug/qat_<device>_<BDF>/telemetry/control
Date:		March 2024
KernelVersion:	6.8
Contact:	qat-linux@intel.com
Description:	(RW) Enables/disables the reporting of telemetry metrics.

		Allowed values to write:
		========================
		* 0: disable telemetry
		* 1: enable telemetry
		* 2, 3, 4: enable telemetry and calculate minimum, maximum
		  and average for each counter over 2, 3 or 4 samples

		Returned values:
		================
		* 1-4: telemetry is enabled and running
		* 0: telemetry is disabled

		Example.

		Writing '3' to this file starts the collection of
		telemetry metrics. Samples are collected every second and
		stored in a circular buffer of size 3. These values are then
		used to calculate the minimum, maximum and average for each
		counter. After enabling, counters can be retrieved through
		the ``device_data`` file::

		  echo 3 > /sys/kernel/debug/qat_4xxx_0000:6b:00.0/telemetry/control

		Writing '0' to this file stops the collection of telemetry
		metrics::

		  echo 0 > /sys/kernel/debug/qat_4xxx_0000:6b:00.0/telemetry/control

		This attribute is only available for qat_4xxx devices.

What:		/sys/kernel/debug/qat_<device>_<BDF>/telemetry/device_data
Date:		March 2024
KernelVersion:	6.8
Contact:	qat-linux@intel.com
Description:	(RO) Reports device telemetry counters.
		Reads report metrics about performance and utilization of
		a QAT device:

		=======================	========================================
		Field			Description
		=======================	========================================
		sample_cnt		number of acquisitions of telemetry data
					from the device. Reads are performed
					every 1000 ms.
		pci_trans_cnt		number of PCIe partial transactions
		max_rd_lat		maximum logged read latency [ns] (could
					be any read operation)
		rd_lat_acc_avg		average read latency [ns]
		max_gp_lat		max get to put latency [ns] (only takes
					samples for AE0)
		gp_lat_acc_avg		average get to put latency [ns]
		bw_in			PCIe, write bandwidth [Mbps]
		bw_out			PCIe, read bandwidth [Mbps]
		at_page_req_lat_avg	Address Translator(AT), average page
					request latency [ns]
		at_trans_lat_avg	AT, average page translation latency [ns]
		at_max_tlb_used		AT, maximum uTLB used
		util_cpr<N>		utilization of Compression slice N [%]
		exec_cpr<N>		execution count of Compression slice N
		util_xlt<N>		utilization of Translator slice N [%]
		exec_xlt<N>		execution count of Translator slice N
		util_dcpr<N>		utilization of Decompression slice N [%]
		exec_dcpr<N>		execution count of Decompression slice N
		util_pke<N>		utilization of PKE N [%]
		exec_pke<N>		execution count of PKE N
		util_ucs<N>		utilization of UCS slice N [%]
		exec_ucs<N>		execution count of UCS slice N
		util_wat<N>		utilization of Wireless Authentication
					slice N [%]
		exec_wat<N>		execution count of Wireless Authentication
					slice N
		util_wcp<N>		utilization of Wireless Cipher slice N [%]
		exec_wcp<N>		execution count of Wireless Cipher slice N
		util_cph<N>		utilization of Cipher slice N [%]
		exec_cph<N>		execution count of Cipher slice N
		util_ath<N>		utilization of Authentication slice N [%]
		exec_ath<N>		execution count of Authentication slice N
		=======================	========================================

		The telemetry report file can be read with the following command::

		  cat /sys/kernel/debug/qat_4xxx_0000:6b:00.0/telemetry/device_data

		If ``control`` is set to 1, only the current values of the
		counters are displayed::

		  <counter_name> <current>

		If ``control`` is 2, 3 or 4, counters are displayed in the
		following format::

		  <counter_name> <current> <min> <max> <avg>

		If a device lacks of a specific accelerator, the corresponding
		attribute is not reported.

		This attribute is only available for qat_4xxx devices.