Expose through debugfs telemetry data for QAT GEN4 devices. This allows to gather metrics about the performance and the utilization of a QAT device and/or a group of ring pairs. In particular, statistics on (1) the utilization of the PCIe channel, (2) address translation and device TLB, when SVA is enabled and (3) the internal engines for crypto and data compression. The device periodically gathers telemetry data from hardware registers and writes it into a DMA memory region which is sampled by the driver. The driver then uses this data to compute basic metrics on the counters and exposes them through debugfs attributes in the folder /sys/kernel/debug/qat_<device>_<BDF>/telemetry. Here is a summary of the changes: * Patch #1 adds an helper function to math.h to compute the average of values within an array. * Patch #2 includes a missing header in the file adf_accel_devices.h to allow to use the macro GET_DEV(). * Patch #3 introduces device level telemetry and the associated documentation in /Documentation/ABI. * Patch #4 extends #3 by introducing ring pair level telemetry and documentation about it. This set is based on earlier work done by Wojciech Ziemba. --- v1 -> v2: - define avg_array() in the C file where it is used - set `accel_dev->telemetry` to NULL in adf_tl_free_mem() - add ring pair service type info to debugfs telemetry/rp_<X>_data output --- Lucas Segarra Fernandez (4): crypto: qat - include pci.h for GET_DEV() crypto: qat - add admin msgs for telemetry crypto: qat - add support for device telemetry crypto: qat - add support for ring pair level telemetry .../ABI/testing/debugfs-driver-qat_telemetry | 228 ++++++ .../intel/qat/qat_420xx/adf_420xx_hw_data.c | 3 + .../intel/qat/qat_4xxx/adf_4xxx_hw_data.c | 3 + drivers/crypto/intel/qat/qat_common/Makefile | 3 + .../intel/qat/qat_common/adf_accel_devices.h | 6 + .../crypto/intel/qat/qat_common/adf_admin.c | 37 + .../crypto/intel/qat/qat_common/adf_admin.h | 4 + .../crypto/intel/qat/qat_common/adf_dbgfs.c | 3 + .../intel/qat/qat_common/adf_gen4_hw_data.h | 1 + .../crypto/intel/qat/qat_common/adf_gen4_tl.c | 153 ++++ .../crypto/intel/qat/qat_common/adf_gen4_tl.h | 158 ++++ .../crypto/intel/qat/qat_common/adf_init.c | 12 + .../intel/qat/qat_common/adf_telemetry.c | 288 +++++++ .../intel/qat/qat_common/adf_telemetry.h | 99 +++ .../intel/qat/qat_common/adf_tl_debugfs.c | 710 ++++++++++++++++++ .../intel/qat/qat_common/adf_tl_debugfs.h | 117 +++ .../qat/qat_common/icp_qat_fw_init_admin.h | 10 + 17 files changed, 1835 insertions(+) create mode 100644 Documentation/ABI/testing/debugfs-driver-qat_telemetry create mode 100644 drivers/crypto/intel/qat/qat_common/adf_gen4_tl.c create mode 100644 drivers/crypto/intel/qat/qat_common/adf_gen4_tl.h create mode 100644 drivers/crypto/intel/qat/qat_common/adf_telemetry.c create mode 100644 drivers/crypto/intel/qat/qat_common/adf_telemetry.h create mode 100644 drivers/crypto/intel/qat/qat_common/adf_tl_debugfs.c create mode 100644 drivers/crypto/intel/qat/qat_common/adf_tl_debugfs.h base-commit: b4719435c14199548ed49f036a7c31040a6b5353 -- 2.41.0
