Commit ce0c00ed authored by Shaokun Zhang's avatar Shaokun Zhang Committed by Zheng Zengkai
Browse files

drivers/perf: hisi: Add support for HiSilicon PA PMU driver

mainline inclusion
from mainline-v5.12-rc3
commit a0ab25cd
category: feature
bugzilla: 175148
CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a0ab25cd82eeb68bfa19a4d93a097521af5011b8



------------------------------------------------------------------------

On HiSilicon Hip09 platform, there is a PA (Protocol Adapter) module on
each chip SICL (Super I/O Cluster) which incorporates three Hydra interface
and facilitates the cache coherency between the dies on the chip. While PA
uncore PMU model is the same as other Hip09 PMU modules and many PMU events
are supported. Let's support the PMU driver using the HiSilicon uncore PMU
framework.

PA PMU supports the following filter functions:
* tracetag_en: allows user to count events according to tt_req or
tt_core set in L3C PMU. It's the same as other PMUs.

* srcid_cmd & srcid_msk: allows user to filter statistics that come from
specific CCL/ICL by configuration source ID.

* tgtid_cmd & tgtid_msk: it is the similar function to srcid_cmd &
srcid_msk. Both are used to check where the data comes from or go to.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: default avatarJohn Garry <john.garry@huawei.com>
Co-developed-by: default avatarQi Liu <liuqi115@huawei.com>
Signed-off-by: default avatarQi Liu <liuqi115@huawei.com>
Signed-off-by: default avatarShaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/1615186237-22263-9-git-send-email-zhangshaokun@hisilicon.com


Signed-off-by: default avatarWill Deacon <will@kernel.org>
Reviewed-by: default avatarShaokun Zhang <zhangshaokun@hisilicon.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent ed1d944f
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