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crypto: qat - add ring buffer idle telemetry counter for GEN6

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Add a new performance counter that measures the average ring buffer idle
duration.

This metric is now included in the telemetry counters exposed via
debugfs for QAT GEN6 devices.

Update the documentation to reflect the new idle duration counter

Co-developed-by: George Abraham P <george.abraham.p@intel.com>
Signed-off-by: George Abraham P <george.abraham.p@intel.com>
Signed-off-by: Vijay Sundar Selvamani <vijay.sundar.selvamani@intel.com>
Signed-off-by: Suman Kumar Chakraborty <suman.kumar.chakraborty@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Vijay Sundar Selvamani 2025-07-25 10:09:29 +01:00 committed by Herbert Xu
parent 81109696f0
commit 9ea349e4b9
3 changed files with 10 additions and 0 deletions
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1
Documentation/ABI/testing/debugfs-driver-qat_telemetry
View File

@ -57,6 +57,7 @@ Description: (RO) Reports device telemetry counters.
gp_lat_acc_avg average get to put latency [ns]
bw_in PCIe, write bandwidth [Mbps]
bw_out PCIe, read bandwidth [Mbps]
re_acc_avg average ring empty time [ns]
at_page_req_lat_avg Address Translator(AT), average page
request latency [ns]
at_trans_lat_avg AT, average page translation latency [ns]

8
drivers/crypto/intel/qat/qat_common/adf_gen6_tl.c
View File

@ -57,6 +57,10 @@ static const struct adf_tl_dbg_counter dev_counters[] = {
/* Maximum uTLB used. */
ADF_TL_COUNTER(AT_MAX_UTLB_USED_NAME, ADF_TL_SIMPLE_COUNT,
ADF_GEN6_TL_DEV_REG_OFF(reg_tl_at_max_utlb_used)),
/* Ring Empty average[ns] across all rings */
ADF_TL_COUNTER_LATENCY(RE_ACC_NAME, ADF_TL_COUNTER_NS_AVG,
ADF_GEN6_TL_DEV_REG_OFF(reg_tl_re_acc),
ADF_GEN6_TL_DEV_REG_OFF(reg_tl_re_cnt)),
};
/* Accelerator utilization counters */
@ -122,6 +126,10 @@ static const struct adf_tl_dbg_counter rp_counters[] = {
/* Payload DevTLB miss rate. */
ADF_TL_COUNTER(AT_PAYLD_DTLB_MISS_NAME, ADF_TL_SIMPLE_COUNT,
ADF_GEN6_TL_RP_REG_OFF(reg_tl_at_payld_devtlb_miss)),
/* Ring Empty average[ns]. */
ADF_TL_COUNTER_LATENCY(RE_ACC_NAME, ADF_TL_COUNTER_NS_AVG,
ADF_GEN6_TL_RP_REG_OFF(reg_tl_re_acc),
ADF_GEN6_TL_RP_REG_OFF(reg_tl_re_cnt)),
};
void adf_gen6_init_tl_data(struct adf_tl_hw_data *tl_data)

1
drivers/crypto/intel/qat/qat_common/adf_tl_debugfs.h
View File

@ -17,6 +17,7 @@ struct adf_accel_dev;
#define LAT_ACC_NAME "gp_lat_acc_avg"
#define BW_IN_NAME "bw_in"
#define BW_OUT_NAME "bw_out"
#define RE_ACC_NAME "re_acc_avg"
#define PAGE_REQ_LAT_NAME "at_page_req_lat_avg"
#define AT_TRANS_LAT_NAME "at_trans_lat_avg"
#define AT_MAX_UTLB_USED_NAME "at_max_tlb_used"