[RFC PATCH v1 00/10] arm64:perf: Support for Hisilicon SoC Hardware event counters

[Anurup M]

Provide Support for Hisilicon SoC Hip05 Hardware event counters.
The Hisilicon SoC Hip05 series has many uncore or non-CPU performance
events and counters units.

This patch is implemented refering to arm-cci, Intel/AMD uncore and
also the cavium thunderX pmu patches.

Support for Hisilicon L3 cache(LLC) hardware events and counters are added
in this implementation.

The Hisilicon PMU datastructures are designed so as to support uncore
and also CPU specific events in future.

The Hisilicon LLC has four banks for a Super CPU Cluster(consists of
 16 CPU cores) and each LLC bank has separate hardware events and counters.
In the current implementation, the count from all these banks are summarized
and total count is output.

Hisilicon SoC use Djtag interface for r/w access to SoC PMU registers

The Hisilicon uncore PMUs can be found under /sys/bus/event_source/devices.
The counters are exported via sysfs in the corresponding events files
under the PMU directory so the perf tool can list the event names.

Note:
This is very initial patchset for Hisilicon Hip05 SoC PMU support shared for
review. Please review and share comments.

TODO:
	1. Counter overflow interrupt handling support.
	2. CPU notifier to migrate to available online CPU's in case
	   of CPU DOWN. Also mapping CPU cores to the current SCCL.
	3. Support for counting of individual LLC banks

Anurup M (8):
  arm64:perf: Add Documentaion for HIP05 PMU event counting.     
    1. Documentaion for perf usage and PMU events.
  arm64:perf: Add Devicetree bindings for Hisilicon SoC PMU
  arm64:perf: Update Kconfig for Hisilicon PMU support
  arm64:perf: Add support for Hisilicon SoC event counters
  arm64:perf: Makefile for Hisilicon Hip05 PMU
  arm64:perf: Update Makefile for Hisilicon PMU support
  arm64:perf: L3 cache(LLC) event listing in perf
  arm64: dts: hip05: Add L3 cache PMU support

Tan Xiaojun (2):
  Documentation: arm64: Add Hisilicon HiP05/06/07 Sysctrl and Djtag dts
    bindings
  drivers: soc: Add support for Hisilicon Djtag driver

 .../bindings/arm/hisilicon/hisilicon.txt           |  97 ++++
 .../devicetree/bindings/arm/hisilicon/pmu.txt      |  52 ++
 Documentation/perf/hip05-pmu.txt                   |  70 +++
 arch/arm64/boot/dts/hisilicon/hip05.dtsi           |  19 +
 drivers/perf/Kconfig                               |   9 +
 drivers/perf/Makefile                              |   1 +
 drivers/perf/hisilicon/Makefile                    |   1 +
 drivers/perf/hisilicon/hisi_uncore_l3c.c           | 561 +++++++++++++++++++++
 drivers/perf/hisilicon/hisi_uncore_l3c.h           | 100 ++++
 drivers/perf/hisilicon/hisi_uncore_pmu.c           | 504 ++++++++++++++++++
 drivers/perf/hisilicon/hisi_uncore_pmu.h           | 148 ++++++
 drivers/soc/Kconfig                                |   1 +
 drivers/soc/Makefile                               |   1 +
 drivers/soc/hisilicon/Kconfig                      |  12 +
 drivers/soc/hisilicon/Makefile                     |   1 +
 drivers/soc/hisilicon/djtag.c                      | 373 ++++++++++++++
 include/linux/soc/hisilicon/djtag.h                |  18 +
 17 files changed, 1968 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/hisilicon/pmu.txt
 create mode 100644 Documentation/perf/hip05-pmu.txt
 create mode 100644 drivers/perf/hisilicon/Makefile
 create mode 100644 drivers/perf/hisilicon/hisi_uncore_l3c.c
 create mode 100644 drivers/perf/hisilicon/hisi_uncore_l3c.h
 create mode 100644 drivers/perf/hisilicon/hisi_uncore_pmu.c
 create mode 100644 drivers/perf/hisilicon/hisi_uncore_pmu.h
 create mode 100644 drivers/soc/hisilicon/Kconfig
 create mode 100644 drivers/soc/hisilicon/Makefile
 create mode 100644 drivers/soc/hisilicon/djtag.c
 create mode 100644 include/linux/soc/hisilicon/djtag.h

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2.1.4