eb52707716
Expose through debugfs ring pair telemetry data for QAT GEN4 devices. This allows to gather metrics about the PCIe channel and device TLB for a selected ring pair. It is possible to monitor maximum 4 ring pairs at the time per device. For details, refer to debugfs-driver-qat_telemetry in Documentation/ABI. This patch is based on earlier work done by Wojciech Ziemba. Signed-off-by: Lucas Segarra Fernandez <lucas.segarra.fernandez@intel.com> Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Damian Muszynski <damian.muszynski@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright (c) 2023 Intel Corporation. */
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#ifndef ADF_TL_DEBUGFS_H
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#define ADF_TL_DEBUGFS_H
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#include <linux/types.h>
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struct adf_accel_dev;
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#define MAX_COUNT_NAME_SIZE 32
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#define SNAPSHOT_CNT_MSG "sample_cnt"
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#define RP_NUM_INDEX "rp_num"
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#define PCI_TRANS_CNT_NAME "pci_trans_cnt"
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#define MAX_RD_LAT_NAME "max_rd_lat"
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#define RD_LAT_ACC_NAME "rd_lat_acc_avg"
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#define MAX_LAT_NAME "max_gp_lat"
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#define LAT_ACC_NAME "gp_lat_acc_avg"
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#define BW_IN_NAME "bw_in"
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#define BW_OUT_NAME "bw_out"
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#define PAGE_REQ_LAT_NAME "at_page_req_lat_avg"
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#define AT_TRANS_LAT_NAME "at_trans_lat_avg"
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#define AT_MAX_UTLB_USED_NAME "at_max_tlb_used"
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#define AT_GLOB_DTLB_HIT_NAME "at_glob_devtlb_hit"
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#define AT_GLOB_DTLB_MISS_NAME "at_glob_devtlb_miss"
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#define AT_PAYLD_DTLB_HIT_NAME "tl_at_payld_devtlb_hit"
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#define AT_PAYLD_DTLB_MISS_NAME "tl_at_payld_devtlb_miss"
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#define RP_SERVICE_TYPE "service_type"
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#define ADF_TL_DBG_RP_ALPHA_INDEX(index) ((index) + 'A')
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#define ADF_TL_DBG_RP_INDEX_ALPHA(alpha) ((alpha) - 'A')
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#define ADF_TL_RP_REGS_FNAME "rp_%c_data"
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#define ADF_TL_RP_REGS_FNAME_SIZE 16
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#define ADF_TL_DATA_REG_OFF(reg, qat_gen) \
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offsetof(struct adf_##qat_gen##_tl_layout, reg)
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#define ADF_TL_DEV_REG_OFF(reg, qat_gen) \
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(ADF_TL_DATA_REG_OFF(tl_device_data_regs, qat_gen) + \
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offsetof(struct adf_##qat_gen##_tl_device_data_regs, reg))
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#define ADF_TL_SLICE_REG_OFF(slice, reg, qat_gen) \
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(ADF_TL_DEV_REG_OFF(slice##_slices[0], qat_gen) + \
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offsetof(struct adf_##qat_gen##_tl_slice_data_regs, reg))
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#define ADF_TL_RP_REG_OFF(reg, qat_gen) \
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(ADF_TL_DATA_REG_OFF(tl_ring_pairs_data_regs[0], qat_gen) + \
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offsetof(struct adf_##qat_gen##_tl_ring_pair_data_regs, reg))
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/**
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* enum adf_tl_counter_type - telemetry counter types
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* @ADF_TL_COUNTER_UNSUPPORTED: unsupported counter
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* @ADF_TL_SIMPLE_COUNT: simple counter
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* @ADF_TL_COUNTER_NS: latency counter, value in ns
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* @ADF_TL_COUNTER_NS_AVG: accumulated average latency counter, value in ns
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* @ADF_TL_COUNTER_MBPS: bandwidth, value in MBps
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*/
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enum adf_tl_counter_type {
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ADF_TL_COUNTER_UNSUPPORTED,
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ADF_TL_SIMPLE_COUNT,
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ADF_TL_COUNTER_NS,
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ADF_TL_COUNTER_NS_AVG,
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ADF_TL_COUNTER_MBPS,
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};
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/**
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* struct adf_tl_dbg_counter - telemetry counter definition
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* @name: name of the counter as printed in the report
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* @adf_tl_counter_type: type of the counter
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* @offset1: offset of 1st register
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* @offset2: offset of 2nd optional register
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*/
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struct adf_tl_dbg_counter {
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const char *name;
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enum adf_tl_counter_type type;
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size_t offset1;
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size_t offset2;
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};
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#define ADF_TL_COUNTER(_name, _type, _offset) \
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{ .name = _name, \
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.type = _type, \
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.offset1 = _offset \
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}
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#define ADF_TL_COUNTER_LATENCY(_name, _type, _offset1, _offset2) \
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{ .name = _name, \
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.type = _type, \
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.offset1 = _offset1, \
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.offset2 = _offset2 \
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}
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/* Telemetry counter aggregated values. */
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struct adf_tl_dbg_aggr_values {
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u64 curr;
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u64 min;
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u64 max;
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u64 avg;
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};
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/**
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* adf_tl_dbgfs_add() - Add telemetry's debug fs entries.
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* @accel_dev: Pointer to acceleration device.
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*
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* Creates telemetry's debug fs folder and attributes in QAT debug fs root.
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*/
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void adf_tl_dbgfs_add(struct adf_accel_dev *accel_dev);
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/**
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* adf_tl_dbgfs_rm() - Remove telemetry's debug fs entries.
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* @accel_dev: Pointer to acceleration device.
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*
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* Removes telemetry's debug fs folder and attributes from QAT debug fs root.
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*/
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void adf_tl_dbgfs_rm(struct adf_accel_dev *accel_dev);
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#endif /* ADF_TL_DEBUGFS_H */
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