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HNS3(HiSilicon Network System 3) PMU is RCiEP device in HiSilicon SoC NIC,
supports collection of performance statistics such as bandwidth, latency,
packet rate and interrupt rate.
NIC of each SICL has one PMU device for it. Driver registers each PMU
device to perf, and exports information of supported events, filter mode of
each event, bdf range, hardware clock frequency, identifier and so on via
sysfs.
Each PMU device has its own registers of control, counters and interrupt,
and it supports 8 hardware events, each hardward event has its own
registers for configuration, counters and interrupt.
Filter options contains:
config - select event
port - select physical port of nic
tc - select tc(must be used with port)
func - select PF/VF
queue - select queue of PF/VF(must be used with func)
intr - select interrupt number(must be used with func)
global - select all functions of IO DIE
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/20220628063419.38514-3-huangguangbin2@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
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PCIe PMU Root Complex Integrated End Point(RCiEP) device is supported
to sample bandwidth, latency, buffer occupation etc.
Each PMU RCiEP device monitors multiple Root Ports, and each RCiEP is
registered as a PMU in /sys/bus/event_source/devices, so users can
select target PMU, and use filter to do further sets.
Filtering options contains:
event - select the event.
port - select target Root Ports. Information of Root Ports are
shown under sysfs.
bdf - select requester_id of target EP device.
trig_len - set trigger condition for starting event statistics.
trig_mode - set trigger mode. 0 means starting to statistic when bigger
than trigger condition, and 1 means smaller.
thr_len - set threshold for statistics.
thr_mode - set threshold mode. 0 means count when bigger than threshold,
and 1 means smaller.
Acked-by: Krzysztof Wilczyński <kw@linux.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Qi Liu <liuqi115@huawei.com>
Reviewed-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/20211202080633.2919-3-liuqi115@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
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This patch lets HiSilicon uncore PMU driver can be built as modules.
A common module and three specific uncore PMU driver modules will be built.
Export necessary functions in hisi_uncore_pmu module, and change
irq_set_affinity to irq_set_affinity_hint to pass compile.
Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
Tested-by: Qi Liu <liuqi115@huawei.com>
Reviewed-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/1588820305-174479-1-git-send-email-wangzhou1@hisilicon.com
Signed-off-by: Will Deacon <will@kernel.org>
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