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.Dd Jul 22, 2022 .Dt PMC.DMC-620 3 .Os .Sh NAME .Nm pmc.dmc-620 .Nd measure the .Tn Arm .Tn DMC-620 Dynamic Memory Controller performance counter events. .Sh LIBRARY .Lb libpmc .Sh SYNOPSIS n pmc.h .Sh DESCRIPTION .Tn DMC-620 PMU counters may be configured to count any one of a defined set of hardware events.
p .Tn Arm .Tn CoreLink .Tn DMC-620 Dynamic Memory Controller performance counters are documented in .Rs .%B "ARM CoreLink DMC-620 Dynamic Memory Controller Technical Reference Manual" .%T "Revision: r0p0" .%D 2017 .%Q "ARM Limited" .Re .Ss PMC Capabilities .Tn DMC-620 PMU counters support the following capabilities: l -column "PMC_CAP_INTERRUPT" "Support" t Sy Capability Ta Em Support t PMC_CAP_CASCADE Ta No t PMC_CAP_EDGE Ta No t PMC_CAP_INTERRUPT Ta Yes t PMC_CAP_INVERT Ta Yes t PMC_CAP_READ Ta Yes t PMC_CAP_PRECISE Ta No t PMC_CAP_SYSTEM Ta Yes t PMC_CAP_TAGGING Ta No t PMC_CAP_THRESHOLD Ta Yes t PMC_CAP_USER Ta No t PMC_CAP_WRITE Ta Yes .El .Ss Event Qualifiers Event specifiers for these PMCs support the following common qualifiers: l -tag -width indent t Li inc= Ns Ar value Two-bit value that controls direction of count for PMC. Behavior depend on selected event. t Li inv Invert the sense of comparison. t Li match= Ns Ar value Count only events matched by .Ar value. t Li mask= Ns Ar qualifier Allow to apply .Ar qualifier mask to compared .Ar value . .El .Ss Class Name Prefix These PMCs use a class name prefix of .Dq Li DMC620_CD2_ or .Dq Li DMC620_C_ . .Ss Event Specifiers The following PMC events are available: l -column t Sy clkdiv2_cycle_count t Sy clkdiv2_allocate t Sy clkdiv2_queue_depth t Sy clkdiv2_waiting_for_wr_data t Sy clkdiv2_read_backlog t Sy clkdiv2_waiting_for_mi t Sy clkdiv2_hazard_resolution t Sy clkdiv2_enqueue t Sy clkdiv2_arbitrate t Sy clkdiv2_lrank_turnaround_activate t Sy clkdiv2_prank_turnaround_activate t Sy clkdiv2_read_depth t Sy clkdiv2_write_depth t Sy clkdiv2_highhigh_qos_depth t Sy clkdiv2_high_qos_depth t Sy clkdiv2_medium_qos_depth t Sy clkdiv2_low_qos_depth t Sy clkdiv2_activate t Sy clkdiv2_rdwr t Sy clkdiv2_refresh t Sy clkdiv2_training_request t Sy clkdiv2_t_mac_tracker t Sy clkdiv2_bk_fsm_tracker t Sy clkdiv2_bk_open_tracker t Sy clkdiv2_ranks_in_pwr_down t Sy clkdiv2_ranks_in_sref t Sy clk_cycle_count t Sy clk_request t Sy clk_upload_stall .El .Sh SEE ALSO .Xr pmc 3 , .Xr pmc.amd 3 , .Xr pmc.atom 3 , .Xr pmc.core 3 , .Xr pmc.core2 3 , .Xr pmc.corei7 3 , .Xr pmc.corei7uc 3 , .Xr pmc.iaf 3 , .Xr pmc.iaf 3 , .Xr pmc.soft 3 , .Xr pmc.tsc 3 , .Xr pmc.westmere 3 , .Xr pmc.westmereuc 3 , .Xr pmc_cpuinfo 3 , .Xr pmclog 3 , .Xr hwpmc 4 .Sh HISTORY The .Nm pmc library first appeared in .Fx 6.0 .
The .Nm pmc.dmc-620 driver was added in .Fx 14.0 . .Sh AUTHORS .An -nosplit The .Lb libpmc library was written by .An Joseph Koshy Aq Mt jkoshy@FreeBSD.org . .An Oleksandr Rybalko Aq Mt ray@FreeBSD.org .
The DMC-620 PMU driver was sponsored by Ampere Computing LLC. This manual page was written by .An Oleksandr Rybalko Aq Mt ray@FreeBSD.org .