[PATCH v2 0/3] Add SiFive Private L2 cache and PMU driver

[PATCH v2 0/3] Add SiFive Private L2 cache and PMU driver

[Eric Lin]

This patch series adds the SiFive Private L2 cache controller
driver and Performance Monitoring Unit (PMU) driver.

The Private L2 cache communicates with both the upstream L1
caches and downstream L3 cache or memory, enabling a high-
performance cache subsystem. It is also responsible for managing
requests from the L1 instruction and data caches of the core.

The Private L2 Performance Monitoring Unit (PMU) consists of a
set of event-programmable counters and their event selector registers.
The registers are available to control the behavior of the counters.

Changes since v1:
 - Rebased on Linux-6.5-rc2
 - Change pl2 cache compatible string to lowercase
 - Add cpuhp_remove_state() after pl2 cache driver probe fail
 - Return 0 instead of return ret at the end of sifive_pl2_cache_init()
 - Cut down the pl2 cache config log lines in pl2_config_read()
 - Sorting the variable by types in sifive_pl2_cache_dev_probe()
 - Change the error message when failing to find the CPU node
 - Add pl2 PMU driver to support per-task profile
 - Move the pl2 PMU driver implementation to the drivers/perf folder
 - Keep only one pl2 cache compatible string suggested by Krzysztof and Conor
 - Addressed Krzysztof's and Conor's comments on DT binding

Eric Lin (2):
  dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller
  soc: sifive: Add SiFive private L2 cache driver

Greentime Hu (1):
  soc: sifive: Add SiFive private L2 cache PMU driver

 .../bindings/cache/sifive,pl2cache.yaml       |  62 ++
 drivers/perf/Kconfig                          |  10 +
 drivers/perf/Makefile                         |   1 +
 drivers/perf/sifive_pl2_pmu.c                 | 602 ++++++++++++++++++
 drivers/soc/sifive/Kconfig                    |   8 +
 drivers/soc/sifive/Makefile                   |   1 +
 drivers/soc/sifive/sifive_pl2.h               |  29 +
 drivers/soc/sifive/sifive_pl2_cache.c         | 202 ++++++
 include/linux/cpuhotplug.h                    |   1 +
 9 files changed, 916 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
 create mode 100644 drivers/perf/sifive_pl2_pmu.c
 create mode 100644 drivers/soc/sifive/sifive_pl2.h
 create mode 100644 drivers/soc/sifive/sifive_pl2_cache.c

-- 
2.40.1


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

[PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Eric Lin]

This add YAML DT binding documentation for SiFive Private L2
cache controller

Signed-off-by: Eric Lin <eric.lin@sifive.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Nick Hu <nick.hu@sifive.com>
---
 .../bindings/cache/sifive,pl2cache.yaml       | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml

diff --git a/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
new file mode 100644
index 000000000000..ee8356c5eeee
--- /dev/null
+++ b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2023 SiFive, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SiFive Private L2 Cache Controller
+
+maintainers:
+  - Greentime Hu  <greentime.hu@sifive.com>
+  - Eric Lin  <eric.lin@sifive.com>
+
+description:
+  The SiFive Private L2 Cache Controller is per core and
+  communicates with both the upstream L1 caches and
+  downstream L3 cache or memory, enabling a high-performance
+  cache subsystem.
+
+allOf:
+  - $ref: /schemas/cache-controller.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: sifive,pl2cache1
+      - const: cache
+
+  cache-block-size: true
+  cache-level: true
+  cache-sets: true
+  cache-size: true
+  cache-unified: true
+
+  reg:
+    maxItems: 1
+
+  next-level-cache: true
+
+required:
+  - compatible
+  - cache-block-size
+  - cache-level
+  - cache-sets
+  - cache-size
+  - cache-unified
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    cache-controller@10104000 {
+        compatible = "sifive,pl2cache1","cache";
+        cache-block-size = <64>;
+        cache-level = <2>;
+        cache-sets = <512>;
+        cache-size = <262144>;
+        cache-unified;
+        reg = <0x10104000 0x4000>;
+        next-level-cache = <&L4>;
+    };
-- 
2.40.1


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Rob Herring]

On Thu, 20 Jul 2023 21:51:19 +0800, Eric Lin wrote:
> This add YAML DT binding documentation for SiFive Private L2
> cache controller
> 
> Signed-off-by: Eric Lin <eric.lin@sifive.com>
> Reviewed-by: Zong Li <zong.li@sifive.com>
> Reviewed-by: Nick Hu <nick.hu@sifive.com>
> ---
>  .../bindings/cache/sifive,pl2cache.yaml       | 62 +++++++++++++++++++
>  1 file changed, 62 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cache/sifive,ccache0.example.dtb: cache-controller@2010000: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cache/sifive,ccache0.example.dtb: cache-controller@2010000: 'interrupts', 'memory-region' do not match any of the regexes: 'pinctrl-[0-9]+'
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: 'l3-cache' does not match any of the regexes: 'pinctrl-[0-9]+'
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'l3-cache' does not match any of the regexes: 'pinctrl-[0-9]+'
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230720135125.21240-2-eric.lin@sifive.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Eric Lin]

Hi Rob,

On Thu, Jul 20, 2023 at 10:47 PM Rob Herring <robh@kernel.org> wrote:
>
>
> On Thu, 20 Jul 2023 21:51:19 +0800, Eric Lin wrote:
> > This add YAML DT binding documentation for SiFive Private L2
> > cache controller
> >
> > Signed-off-by: Eric Lin <eric.lin@sifive.com>
> > Reviewed-by: Zong Li <zong.li@sifive.com>
> > Reviewed-by: Nick Hu <nick.hu@sifive.com>
> > ---
> >  .../bindings/cache/sifive,pl2cache.yaml       | 62 +++++++++++++++++++
> >  1 file changed, 62 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> >
>
> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
> on your patch (DT_CHECKER_FLAGS is new in v5.13):
>
> yamllint warnings/errors:
>
> dtschema/dtc warnings/errors:
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cache/sifive,ccache0.example.dtb: cache-controller@2010000: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cache/sifive,ccache0.example.dtb: cache-controller@2010000: 'interrupts', 'memory-region' do not match any of the regexes: 'pinctrl-[0-9]+'
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb: l2-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l2-cache: 'l3-cache' does not match any of the regexes: 'pinctrl-[0-9]+'
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/thermal/thermal-cooling-devices.example.dtb: l3-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'l3-cache' does not match any of the regexes: 'pinctrl-[0-9]+'
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l3-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible:0: 'sifive,pl2cache1' was expected
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: compatible: ['cache'] is too short
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-block-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-sets' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'cache-size' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.example.dtb: l2-cache: 'reg' is a required property
>         from schema $id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
>
> doc reference errors (make refcheckdocs):
>
> See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230720135125.21240-2-eric.lin@sifive.com
>
> The base for the series is generally the latest rc1. A different dependency
> should be noted in *this* patch.
>
> If you already ran 'make dt_binding_check' and didn't see the above
> error(s), then make sure 'yamllint' is installed and dt-schema is up to
> date:
>
> pip3 install dtschema --upgrade
>
> Please check and re-submit after running the above command yourself. Note
> that DT_SCHEMA_FILES can be set to your schema file to speed up checking
> your schema. However, it must be unset to test all examples with your schema.
>

Sorry for the errors. I forgot to run `make dt_binding_check`.
I'll fix it in the next version. Thanks for the review.

Best regards,
Eric Lin

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Conor Dooley]

[-- Attachment #1.1: Type: text/plain, Size: 2546 bytes --]

Hey Eric,

On Thu, Jul 20, 2023 at 09:51:19PM +0800, Eric Lin wrote:
> This add YAML DT binding documentation for SiFive Private L2
> cache controller
> 
> Signed-off-by: Eric Lin <eric.lin@sifive.com>
> Reviewed-by: Zong Li <zong.li@sifive.com>
> Reviewed-by: Nick Hu <nick.hu@sifive.com>
> ---
>  .../bindings/cache/sifive,pl2cache.yaml       | 62 +++++++++++++++++++

btw, your $subject should be "dt-bindings: cache: ...." rather than
"riscv: sifive".

>  1 file changed, 62 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> 
> diff --git a/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> new file mode 100644
> index 000000000000..ee8356c5eeee
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> @@ -0,0 +1,62 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright (C) 2023 SiFive, Inc.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: SiFive Private L2 Cache Controller
> +
> +maintainers:
> +  - Greentime Hu  <greentime.hu@sifive.com>
> +  - Eric Lin  <eric.lin@sifive.com>

There's extra spaces in these lines for some reason.

> +
> +description:
> +  The SiFive Private L2 Cache Controller is per core and
> +  communicates with both the upstream L1 caches and
> +  downstream L3 cache or memory, enabling a high-performance
> +  cache subsystem.
> +
> +allOf:
> +  - $ref: /schemas/cache-controller.yaml#
> +

I'm pretty sure that I pointed out last time around that you need to add
something like in the ccache driver:

select:
  properties:
    compatible:
      contains:
        enum:
          - sifive,ccache0
          - sifive,fu540-c000-ccache
          - sifive,fu740-c000-ccache

otherwise this binding will be used for anything containing "cache" in
the dt-binding.
For this binding, I think that the following is sufficient:

select:
  properties:
    compatible:
      contains:
          const: sifive,pl2cache1

> +properties:
> +  compatible:
> +    items:
> +      - const: sifive,pl2cache1
> +      - const: cache

You omitted the pl2cache0 from here, that needs to come back! You'll end
up with 2 items entries.
Either way, I can't take this binding without a soc-specific compatible,
per sifive-blocks-ip-versioning.txt..

Thanks,
Conor.

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

[-- Attachment #2: Type: text/plain, Size: 161 bytes --]

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Conor Dooley]

[-- Attachment #1.1: Type: text/plain, Size: 2840 bytes --]

On Thu, Jul 20, 2023 at 06:10:51PM +0100, Conor Dooley wrote:
> Hey Eric,
> 
> On Thu, Jul 20, 2023 at 09:51:19PM +0800, Eric Lin wrote:
> > This add YAML DT binding documentation for SiFive Private L2
> > cache controller
> > 
> > Signed-off-by: Eric Lin <eric.lin@sifive.com>
> > Reviewed-by: Zong Li <zong.li@sifive.com>
> > Reviewed-by: Nick Hu <nick.hu@sifive.com>
> > ---
> >  .../bindings/cache/sifive,pl2cache.yaml       | 62 +++++++++++++++++++
> 
> btw, your $subject should be "dt-bindings: cache: ...." rather than
> "riscv: sifive".
> 
> >  1 file changed, 62 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> > new file mode 100644
> > index 000000000000..ee8356c5eeee
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> > @@ -0,0 +1,62 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +# Copyright (C) 2023 SiFive, Inc.
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: SiFive Private L2 Cache Controller
> > +
> > +maintainers:
> > +  - Greentime Hu  <greentime.hu@sifive.com>
> > +  - Eric Lin  <eric.lin@sifive.com>
> 
> There's extra spaces in these lines for some reason.
> 
> > +
> > +description:
> > +  The SiFive Private L2 Cache Controller is per core and
> > +  communicates with both the upstream L1 caches and
> > +  downstream L3 cache or memory, enabling a high-performance
> > +  cache subsystem.
> > +
> > +allOf:
> > +  - $ref: /schemas/cache-controller.yaml#
> > +
> 
> I'm pretty sure that I pointed out last time around that you need to add
> something like in the ccache driver:
> 
> select:
>   properties:
>     compatible:
>       contains:
>         enum:
>           - sifive,ccache0
>           - sifive,fu540-c000-ccache
>           - sifive,fu740-c000-ccache
> 
> otherwise this binding will be used for anything containing "cache" in
> the dt-binding.
> For this binding, I think that the following is sufficient:
> 
> select:
>   properties:
>     compatible:
>       contains:
>           const: sifive,pl2cache1
> 
> > +properties:
> > +  compatible:
> > +    items:
> > +      - const: sifive,pl2cache1
> > +      - const: cache
> 
> You omitted the pl2cache0 from here, that needs to come back! You'll end
> up with 2 items entries.
> Either way, I can't take this binding without a soc-specific compatible,
> per sifive-blocks-ip-versioning.txt..

Further, "sifive,perfmon-counters" is an undocumented property.

Thanks,
Conor.

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

[-- Attachment #2: Type: text/plain, Size: 161 bytes --]

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Eric Lin]

Hi Conor,

On Fri, Jul 28, 2023 at 3:06 PM Conor Dooley <conor.dooley@microchip.com> wrote:
>
> On Thu, Jul 20, 2023 at 06:10:51PM +0100, Conor Dooley wrote:
> > Hey Eric,
> >
> > On Thu, Jul 20, 2023 at 09:51:19PM +0800, Eric Lin wrote:
> > > This add YAML DT binding documentation for SiFive Private L2
> > > cache controller
> > >
> > > Signed-off-by: Eric Lin <eric.lin@sifive.com>
> > > Reviewed-by: Zong Li <zong.li@sifive.com>
> > > Reviewed-by: Nick Hu <nick.hu@sifive.com>
> > > ---
> > >  .../bindings/cache/sifive,pl2cache.yaml       | 62 +++++++++++++++++++
> >
> > btw, your $subject should be "dt-bindings: cache: ...." rather than
> > "riscv: sifive".
> >

OK, I'll fix it in v3.

> > >  1 file changed, 62 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> > >
> > > diff --git a/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> > > new file mode 100644
> > > index 000000000000..ee8356c5eeee
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> > > @@ -0,0 +1,62 @@
> > > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > > +# Copyright (C) 2023 SiFive, Inc.
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: SiFive Private L2 Cache Controller
> > > +
> > > +maintainers:
> > > +  - Greentime Hu  <greentime.hu@sifive.com>
> > > +  - Eric Lin  <eric.lin@sifive.com>
> >
> > There's extra spaces in these lines for some reason.
> >

OK, I'll fix it in v3.

> > > +
> > > +description:
> > > +  The SiFive Private L2 Cache Controller is per core and
> > > +  communicates with both the upstream L1 caches and
> > > +  downstream L3 cache or memory, enabling a high-performance
> > > +  cache subsystem.
> > > +
> > > +allOf:
> > > +  - $ref: /schemas/cache-controller.yaml#
> > > +
> >
> > I'm pretty sure that I pointed out last time around that you need to add
> > something like in the ccache driver:
> >
> > select:
> >   properties:
> >     compatible:
> >       contains:
> >         enum:
> >           - sifive,ccache0
> >           - sifive,fu540-c000-ccache
> >           - sifive,fu740-c000-ccache
> >
> > otherwise this binding will be used for anything containing "cache" in
> > the dt-binding.
> > For this binding, I think that the following is sufficient:
> >
> > select:
> >   properties:
> >     compatible:
> >       contains:
> >           const: sifive,pl2cache1
> >

Sorry, I misunderstood your meaning.
To be honest, I'm not quite familiar with the usage of the select property.
When should we use the select property?
May I ask, is there a document to detail introduce each property and
its usage like the device-tree spec?
I think it would be very helpful for beginners writing correct
dt-binding and it can save much reviewers time.
Thanks for your kind explanation, I'll fix it in v3.

> > > +properties:
> > > +  compatible:
> > > +    items:
> > > +      - const: sifive,pl2cache1
> > > +      - const: cache
> >
> > You omitted the pl2cache0 from here, that needs to come back! You'll end
> > up with 2 items entries.

OK, it should be as follows, right?

+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: sifive,pl2cache0
+          - const: sifive,pl2cache1
+          - const: cache
+      - items:
+          - const: sifive,pl2cache1
+          - const: cache

I'll fix it in v3. Thanks.

> > Either way, I can't take this binding without a soc-specific compatible,
> > per sifive-blocks-ip-versioning.txt..
>
> Further, "sifive,perfmon-counters" is an undocumented property.
>

OK, I'll add "sifive,perfmon-counters" property in v3.
Thanks for your kind review.

Best regards,
Eric Lin

> Thanks,
> Conor.

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Conor Dooley]

[-- Attachment #1.1: Type: text/plain, Size: 1913 bytes --]

On Fri, Jul 28, 2023 at 04:24:08PM +0800, Eric Lin wrote:
> On Fri, Jul 28, 2023 at 3:06 PM Conor Dooley <conor.dooley@microchip.com> wrote:
> > On Thu, Jul 20, 2023 at 06:10:51PM +0100, Conor Dooley wrote:
> > > On Thu, Jul 20, 2023 at 09:51:19PM +0800, Eric Lin wrote:

> > > > +description:
> > > > +  The SiFive Private L2 Cache Controller is per core and
> > > > +  communicates with both the upstream L1 caches and
> > > > +  downstream L3 cache or memory, enabling a high-performance
> > > > +  cache subsystem.
> > > > +
> > > > +allOf:
> > > > +  - $ref: /schemas/cache-controller.yaml#
> > > > +
> > >
> > > I'm pretty sure that I pointed out last time around that you need to add
> > > something like in the ccache driver:
> > >
> > > select:
> > >   properties:
> > >     compatible:
> > >       contains:
> > >         enum:
> > >           - sifive,ccache0
> > >           - sifive,fu540-c000-ccache
> > >           - sifive,fu740-c000-ccache
> > >
> > > otherwise this binding will be used for anything containing "cache" in
> > > the dt-binding.
> > > For this binding, I think that the following is sufficient:
> > >
> > > select:
> > >   properties:
> > >     compatible:
> > >       contains:
> > >           const: sifive,pl2cache1
> > >
> 
> Sorry, I misunderstood your meaning.
> To be honest, I'm not quite familiar with the usage of the select property.
> When should we use the select property?
> May I ask, is there a document to detail introduce each property and
> its usage like the device-tree spec?
> I think it would be very helpful for beginners writing correct
> dt-binding and it can save much reviewers time.

You need this select because otherwise this binding will match against
every other user of "cache" in the tree. It's explained here:
https://docs.kernel.org/devicetree/bindings/writing-schema.html

Thanks,
Conor.

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

[-- Attachment #2: Type: text/plain, Size: 161 bytes --]

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Eric Lin]

Hi Conor and Krzysztof,

On Fri, Jul 21, 2023 at 1:10 AM Conor Dooley <conor@kernel.org> wrote:
>
> Hey Eric,
>
> On Thu, Jul 20, 2023 at 09:51:19PM +0800, Eric Lin wrote:
> > This add YAML DT binding documentation for SiFive Private L2
> > cache controller
> >
> > Signed-off-by: Eric Lin <eric.lin@sifive.com>
> > Reviewed-by: Zong Li <zong.li@sifive.com>
> > Reviewed-by: Nick Hu <nick.hu@sifive.com>
> > ---
> >  .../bindings/cache/sifive,pl2cache.yaml       | 62 +++++++++++++++++++
>
> btw, your $subject should be "dt-bindings: cache: ...." rather than
> "riscv: sifive".
>
> >  1 file changed, 62 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> > new file mode 100644
> > index 000000000000..ee8356c5eeee
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/cache/sifive,pl2cache.yaml
> > @@ -0,0 +1,62 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +# Copyright (C) 2023 SiFive, Inc.
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/cache/sifive,pl2cache.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: SiFive Private L2 Cache Controller
> > +
> > +maintainers:
> > +  - Greentime Hu  <greentime.hu@sifive.com>
> > +  - Eric Lin  <eric.lin@sifive.com>
>
> There's extra spaces in these lines for some reason.
>
> > +
> > +description:
> > +  The SiFive Private L2 Cache Controller is per core and
> > +  communicates with both the upstream L1 caches and
> > +  downstream L3 cache or memory, enabling a high-performance
> > +  cache subsystem.
> > +
> > +allOf:
> > +  - $ref: /schemas/cache-controller.yaml#
> > +
>
> I'm pretty sure that I pointed out last time around that you need to add
> something like in the ccache driver:
>
> select:
>   properties:
>     compatible:
>       contains:
>         enum:
>           - sifive,ccache0
>           - sifive,fu540-c000-ccache
>           - sifive,fu740-c000-ccache
>
> otherwise this binding will be used for anything containing "cache" in
> the dt-binding.
> For this binding, I think that the following is sufficient:
>
> select:
>   properties:
>     compatible:
>       contains:
>           const: sifive,pl2cache1
>
> > +properties:
> > +  compatible:
> > +    items:
> > +      - const: sifive,pl2cache1
> > +      - const: cache
>
> You omitted the pl2cache0 from here, that needs to come back! You'll end
> up with 2 items entries.
> Either way, I can't take this binding without a soc-specific compatible,
> per sifive-blocks-ip-versioning.txt..
>
Sorry for the late reply.
OK, I will wait until the customer's SoC tape-out before upstreaming
the PL2 cache and PMU drivers.
Thank you for your review.

Best regards,
Eric Lin

> Thanks,
> Conor.

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Krzysztof Kozlowski]

On 20/07/2023 15:51, Eric Lin wrote:
> This add YAML DT binding documentation for SiFive Private L2
> cache controller
> 
> Signed-off-by: Eric Lin <eric.lin@sifive.com>
> Reviewed-by: Zong Li <zong.li@sifive.com>
> Reviewed-by: Nick Hu <nick.hu@sifive.com>


...

> +properties:
> +  compatible:
> +    items:
> +      - const: sifive,pl2cache1

I still have doubts that it is not used in any SoC. This is what you
said last time: "is not part of any SoC."
If not part of any SoC, then where is it? Why are you adding it to the
kernel?



> +      - const: cache
> +
> +  cache-block-size: true
> +  cache-level: true
> +  cache-sets: true
> +  cache-size: true
> +  cache-unified: true
> +
> +  reg:
> +    maxItems: 1
> +
> +  next-level-cache: true
> +
> +required:
> +  - compatible
> +  - cache-block-size
> +  - cache-level
> +  - cache-sets
> +  - cache-size
> +  - cache-unified
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    cache-controller@10104000 {
> +        compatible = "sifive,pl2cache1","cache";

Missing space.

> +        cache-block-size = <64>;
> +        cache-level = <2>;
> +        cache-sets = <512>;
> +        cache-size = <262144>;
> +        cache-unified;
> +        reg = <0x10104000 0x4000>;

reg is after compatible.

> +        next-level-cache = <&L4>;
> +    };

Best regards,
Krzysztof


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Eric Lin]

Hi Krzysztof,

On Fri, Jul 21, 2023 at 4:35 PM Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> On 20/07/2023 15:51, Eric Lin wrote:
> > This add YAML DT binding documentation for SiFive Private L2
> > cache controller
> >
> > Signed-off-by: Eric Lin <eric.lin@sifive.com>
> > Reviewed-by: Zong Li <zong.li@sifive.com>
> > Reviewed-by: Nick Hu <nick.hu@sifive.com>
>
>
> ...
>
> > +properties:
> > +  compatible:
> > +    items:
> > +      - const: sifive,pl2cache1
>
> I still have doubts that it is not used in any SoC. This is what you
> said last time: "is not part of any SoC."
> If not part of any SoC, then where is it? Why are you adding it to the
> kernel?
>

Sorry for the late reply. I didn't describe it clearly last time.
Currently, we have two hardware versions of pl2cache: pl2cache0 and pl2cache1.
The pl2cache0 is used in unmatched board SoC. The pl2cache1 is
utilized in our internal FPGA platform for evaluation; it's our core
IP.

>
>
> > +      - const: cache
> > +
> > +  cache-block-size: true
> > +  cache-level: true
> > +  cache-sets: true
> > +  cache-size: true
> > +  cache-unified: true
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  next-level-cache: true
> > +
> > +required:
> > +  - compatible
> > +  - cache-block-size
> > +  - cache-level
> > +  - cache-sets
> > +  - cache-size
> > +  - cache-unified
> > +  - reg
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    cache-controller@10104000 {
> > +        compatible = "sifive,pl2cache1","cache";
>
> Missing space.

OK, I'll fix it in the next version.

>
> > +        cache-block-size = <64>;
> > +        cache-level = <2>;
> > +        cache-sets = <512>;
> > +        cache-size = <262144>;
> > +        cache-unified;
> > +        reg = <0x10104000 0x4000>;
>
> reg is after compatible.

OK, I'll fix it in the next version.
Thanks for your review.

Best regards,
Eric Lin

>
> > +        next-level-cache = <&L4>;
> > +    };
>
> Best regards,
> Krzysztof
>

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Conor Dooley]

[-- Attachment #1.1: Type: text/plain, Size: 1214 bytes --]

On Fri, Jul 28, 2023 at 02:01:28PM +0800, Eric Lin wrote:
> Hi Krzysztof,
> 
> On Fri, Jul 21, 2023 at 4:35 PM Krzysztof Kozlowski
> <krzysztof.kozlowski@linaro.org> wrote:
> >
> > On 20/07/2023 15:51, Eric Lin wrote:
> > > This add YAML DT binding documentation for SiFive Private L2
> > > cache controller
> > >
> > > Signed-off-by: Eric Lin <eric.lin@sifive.com>
> > > Reviewed-by: Zong Li <zong.li@sifive.com>
> > > Reviewed-by: Nick Hu <nick.hu@sifive.com>
> >
> >
> > ...
> >
> > > +properties:
> > > +  compatible:
> > > +    items:
> > > +      - const: sifive,pl2cache1
> >
> > I still have doubts that it is not used in any SoC. This is what you
> > said last time: "is not part of any SoC."
> > If not part of any SoC, then where is it? Why are you adding it to the
> > kernel?
> >
> 
> Sorry for the late reply. I didn't describe it clearly last time.
> Currently, we have two hardware versions of pl2cache: pl2cache0 and pl2cache1.
> The pl2cache0 is used in unmatched board SoC.

Wait a second, does the fu740 on the unmatched not have a ccache as
it's L2 cache?

> The pl2cache1 is
> utilized in our internal FPGA platform for evaluation; it's our core
> IP.

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

[-- Attachment #2: Type: text/plain, Size: 161 bytes --]

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Eric Lin]

On Fri, Jul 28, 2023 at 2:47 PM Conor Dooley <conor.dooley@microchip.com> wrote:
>
> On Fri, Jul 28, 2023 at 02:01:28PM +0800, Eric Lin wrote:
> > Hi Krzysztof,
> >
> > On Fri, Jul 21, 2023 at 4:35 PM Krzysztof Kozlowski
> > <krzysztof.kozlowski@linaro.org> wrote:
> > >
> > > On 20/07/2023 15:51, Eric Lin wrote:
> > > > This add YAML DT binding documentation for SiFive Private L2
> > > > cache controller
> > > >
> > > > Signed-off-by: Eric Lin <eric.lin@sifive.com>
> > > > Reviewed-by: Zong Li <zong.li@sifive.com>
> > > > Reviewed-by: Nick Hu <nick.hu@sifive.com>
> > >
> > >
> > > ...
> > >
> > > > +properties:
> > > > +  compatible:
> > > > +    items:
> > > > +      - const: sifive,pl2cache1
> > >
> > > I still have doubts that it is not used in any SoC. This is what you
> > > said last time: "is not part of any SoC."
> > > If not part of any SoC, then where is it? Why are you adding it to the
> > > kernel?
> > >
> >
> > Sorry for the late reply. I didn't describe it clearly last time.
> > Currently, we have two hardware versions of pl2cache: pl2cache0 and pl2cache1.
> > The pl2cache0 is used in unmatched board SoC.
>
> Wait a second, does the fu740 on the unmatched not have a ccache as
> it's L2 cache?
>

Hi Conor,
Sorry, I misremember the L2 cache on the unmatched board.
I just check again. The unmatched board L2 cache is ccache not
pl2cache0. You are right. Thanks.

Best regards,
Eric Lin

> > The pl2cache1 is
> > utilized in our internal FPGA platform for evaluation; it's our core
> > IP.

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Krzysztof Kozlowski]

On 28/07/2023 08:01, Eric Lin wrote:
> Hi Krzysztof,
> 
> On Fri, Jul 21, 2023 at 4:35 PM Krzysztof Kozlowski
> <krzysztof.kozlowski@linaro.org> wrote:
>>
>> On 20/07/2023 15:51, Eric Lin wrote:
>>> This add YAML DT binding documentation for SiFive Private L2
>>> cache controller
>>>
>>> Signed-off-by: Eric Lin <eric.lin@sifive.com>
>>> Reviewed-by: Zong Li <zong.li@sifive.com>
>>> Reviewed-by: Nick Hu <nick.hu@sifive.com>
>>
>>
>> ...
>>
>>> +properties:
>>> +  compatible:
>>> +    items:
>>> +      - const: sifive,pl2cache1
>>
>> I still have doubts that it is not used in any SoC. This is what you
>> said last time: "is not part of any SoC."
>> If not part of any SoC, then where is it? Why are you adding it to the
>> kernel?
>>
> 
> Sorry for the late reply. I didn't describe it clearly last time.
> Currently, we have two hardware versions of pl2cache: pl2cache0 and pl2cache1.
> The pl2cache0 is used in unmatched board SoC. The pl2cache1 is
> utilized in our internal FPGA platform for evaluation; it's our core
> IP.

And why do you add bindings for some internal FPGA IP block which does
not interface with any SW?

Best regards,
Krzysztof


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Eric Lin]

On Fri, Jul 28, 2023 at 2:58 PM Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> On 28/07/2023 08:01, Eric Lin wrote:
> > Hi Krzysztof,
> >
> > On Fri, Jul 21, 2023 at 4:35 PM Krzysztof Kozlowski
> > <krzysztof.kozlowski@linaro.org> wrote:
> >>
> >> On 20/07/2023 15:51, Eric Lin wrote:
> >>> This add YAML DT binding documentation for SiFive Private L2
> >>> cache controller
> >>>
> >>> Signed-off-by: Eric Lin <eric.lin@sifive.com>
> >>> Reviewed-by: Zong Li <zong.li@sifive.com>
> >>> Reviewed-by: Nick Hu <nick.hu@sifive.com>
> >>
> >>
> >> ...
> >>
> >>> +properties:
> >>> +  compatible:
> >>> +    items:
> >>> +      - const: sifive,pl2cache1
> >>
> >> I still have doubts that it is not used in any SoC. This is what you
> >> said last time: "is not part of any SoC."
> >> If not part of any SoC, then where is it? Why are you adding it to the
> >> kernel?
> >>
> >
> > Sorry for the late reply. I didn't describe it clearly last time.
> > Currently, we have two hardware versions of pl2cache: pl2cache0 and pl2cache1.
> > The pl2cache0 is used in unmatched board SoC. The pl2cache1 is
> > utilized in our internal FPGA platform for evaluation; it's our core
> > IP.
>
> And why do you add bindings for some internal FPGA IP block which does
> not interface with any SW?
>

Hi Krzysztof,
The pl2cache has mmio interface for SW. Thanks.

Best regards,
Eric Lin

> Best regards,
> Krzysztof
>

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Krzysztof Kozlowski]

On 28/07/2023 11:04, Eric Lin wrote:
> On Fri, Jul 28, 2023 at 2:58 PM Krzysztof Kozlowski
> <krzysztof.kozlowski@linaro.org> wrote:
>>
>> On 28/07/2023 08:01, Eric Lin wrote:
>>> Hi Krzysztof,
>>>
>>> On Fri, Jul 21, 2023 at 4:35 PM Krzysztof Kozlowski
>>> <krzysztof.kozlowski@linaro.org> wrote:
>>>>
>>>> On 20/07/2023 15:51, Eric Lin wrote:
>>>>> This add YAML DT binding documentation for SiFive Private L2
>>>>> cache controller
>>>>>
>>>>> Signed-off-by: Eric Lin <eric.lin@sifive.com>
>>>>> Reviewed-by: Zong Li <zong.li@sifive.com>
>>>>> Reviewed-by: Nick Hu <nick.hu@sifive.com>
>>>>
>>>>
>>>> ...
>>>>
>>>>> +properties:
>>>>> +  compatible:
>>>>> +    items:
>>>>> +      - const: sifive,pl2cache1
>>>>
>>>> I still have doubts that it is not used in any SoC. This is what you
>>>> said last time: "is not part of any SoC."
>>>> If not part of any SoC, then where is it? Why are you adding it to the
>>>> kernel?
>>>>
>>>
>>> Sorry for the late reply. I didn't describe it clearly last time.
>>> Currently, we have two hardware versions of pl2cache: pl2cache0 and pl2cache1.
>>> The pl2cache0 is used in unmatched board SoC. The pl2cache1 is
>>> utilized in our internal FPGA platform for evaluation; it's our core
>>> IP.
>>
>> And why do you add bindings for some internal FPGA IP block which does
>> not interface with any SW?
>>
> 
> Hi Krzysztof,
> The pl2cache has mmio interface for SW. Thanks.

Then did you mean that FPGA represented some model of your SoC? If so,
what are other bindings for that FPGA components?

Best regards,
Krzysztof


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 1/3] dt-bindings: riscv: sifive: Add SiFive Private L2 cache controller

[Eric Lin]

On Fri, Jul 28, 2023 at 5:39 PM Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> On 28/07/2023 11:04, Eric Lin wrote:
> > On Fri, Jul 28, 2023 at 2:58 PM Krzysztof Kozlowski
> > <krzysztof.kozlowski@linaro.org> wrote:
> >>
> >> On 28/07/2023 08:01, Eric Lin wrote:
> >>> Hi Krzysztof,
> >>>
> >>> On Fri, Jul 21, 2023 at 4:35 PM Krzysztof Kozlowski
> >>> <krzysztof.kozlowski@linaro.org> wrote:
> >>>>
> >>>> On 20/07/2023 15:51, Eric Lin wrote:
> >>>>> This add YAML DT binding documentation for SiFive Private L2
> >>>>> cache controller
> >>>>>
> >>>>> Signed-off-by: Eric Lin <eric.lin@sifive.com>
> >>>>> Reviewed-by: Zong Li <zong.li@sifive.com>
> >>>>> Reviewed-by: Nick Hu <nick.hu@sifive.com>
> >>>>
> >>>>
> >>>> ...
> >>>>
> >>>>> +properties:
> >>>>> +  compatible:
> >>>>> +    items:
> >>>>> +      - const: sifive,pl2cache1
> >>>>
> >>>> I still have doubts that it is not used in any SoC. This is what you
> >>>> said last time: "is not part of any SoC."
> >>>> If not part of any SoC, then where is it? Why are you adding it to the
> >>>> kernel?
> >>>>
> >>>
> >>> Sorry for the late reply. I didn't describe it clearly last time.
> >>> Currently, we have two hardware versions of pl2cache: pl2cache0 and pl2cache1.
> >>> The pl2cache0 is used in unmatched board SoC. The pl2cache1 is
> >>> utilized in our internal FPGA platform for evaluation; it's our core
> >>> IP.
> >>
> >> And why do you add bindings for some internal FPGA IP block which does
> >> not interface with any SW?
> >>
> >
> > Hi Krzysztof,
> > The pl2cache has mmio interface for SW. Thanks.
>
> Then did you mean that FPGA represented some model of your SoC? If so,
> what are other bindings for that FPGA components?
>
Hi Krzysztof,

Sorry for the late reply.
Yes, here are the devices dt-binding that we use on the internal FPGA
SoC platform. Thanks.

uart:
Documentation/devicetree/bindings/serial/sifive-serial.yaml

gpio:
Documentation/devicetree/bindings/gpio/sifive,gpio.yaml

dma:
Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml

spi:
Documentation/devicetree/bindings/spi/spi-sifive.yaml

Best regards,
Eric Lin

> Best regards,
> Krzysztof
>

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

[PATCH v2 2/3] soc: sifive: Add SiFive private L2 cache driver

[Eric Lin]

This adds SiFive private L2 cache driver which will show
cache config information when booting and add cpu hotplug
callback functions.

Signed-off-by: Eric Lin <eric.lin@sifive.com>
Co-developed-by: Nick Hu <nick.hu@sifive.com>
Signed-off-by: Nick Hu <nick.hu@sifive.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
---
 drivers/soc/sifive/Kconfig            |   8 ++
 drivers/soc/sifive/Makefile           |   1 +
 drivers/soc/sifive/sifive_pl2.h       |  27 ++++
 drivers/soc/sifive/sifive_pl2_cache.c | 194 ++++++++++++++++++++++++++
 include/linux/cpuhotplug.h            |   1 +
 5 files changed, 231 insertions(+)
 create mode 100644 drivers/soc/sifive/sifive_pl2.h
 create mode 100644 drivers/soc/sifive/sifive_pl2_cache.c

diff --git a/drivers/soc/sifive/Kconfig b/drivers/soc/sifive/Kconfig
index e86870be34c9..573564295058 100644
--- a/drivers/soc/sifive/Kconfig
+++ b/drivers/soc/sifive/Kconfig
@@ -7,4 +7,12 @@ config SIFIVE_CCACHE
 	help
 	  Support for the composable cache controller on SiFive platforms.
 
+config SIFIVE_PL2
+	bool "Sifive private L2 Cache controller"
+	help
+	  Support for the private L2 cache controller on SiFive platforms.
+	  The SiFive Private L2 Cache Controller is per hart and communicates
+	  with both the upstream L1 caches and downstream L3 cache or memory,
+	  enabling a high-performance cache subsystem.
+
 endif
diff --git a/drivers/soc/sifive/Makefile b/drivers/soc/sifive/Makefile
index 1f5dc339bf82..707493e1c691 100644
--- a/drivers/soc/sifive/Makefile
+++ b/drivers/soc/sifive/Makefile
@@ -1,3 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
 
 obj-$(CONFIG_SIFIVE_CCACHE)	+= sifive_ccache.o
+obj-$(CONFIG_SIFIVE_PL2)	+= sifive_pl2_cache.o
diff --git a/drivers/soc/sifive/sifive_pl2.h b/drivers/soc/sifive/sifive_pl2.h
new file mode 100644
index 000000000000..9a5c9ee898bd
--- /dev/null
+++ b/drivers/soc/sifive/sifive_pl2.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2023 SiFive, Inc.
+ *
+ */
+
+#ifndef _SIFIVE_PL2_H
+#define _SIFIVE_PL2_H
+
+#define SIFIVE_PL2_CONFIG1_OFFSET	0x1000
+#define SIFIVE_PL2_CONFIG0_OFFSET	0x1008
+#define SIFIVE_PL2_PMCLIENT_OFFSET	0x2800
+
+#define SIFIVE_PL2CACHE_CONFIG 0x00
+#define SIFIVE_PL2CACHE_CONFIG_BANK_MASK GENMASK_ULL(7, 0)
+#define SIFIVE_PL2CACHE_CONFIG_WAYS_MASK GENMASK_ULL(15, 8)
+#define SIFIVE_PL2CACHE_CONFIG_SETS_MASK GENMASK_ULL(23, 16)
+#define SIFIVE_PL2CACHE_CONFIG_BLKS_MASK GENMASK_ULL(31, 24)
+
+struct sifive_pl2_state {
+	void __iomem *pl2_base;
+	u32 config1;
+	u64 config0;
+	u64 pmclientfilter;
+};
+
+#endif /*_SIFIVE_PL2_H */
diff --git a/drivers/soc/sifive/sifive_pl2_cache.c b/drivers/soc/sifive/sifive_pl2_cache.c
new file mode 100644
index 000000000000..da2dc0eead74
--- /dev/null
+++ b/drivers/soc/sifive/sifive_pl2_cache.c
@@ -0,0 +1,194 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SiFive private L2 cache controller Driver
+ *
+ * Copyright (C) 2018-2023 SiFive, Inc.
+ */
+
+#define pr_fmt(fmt) "pL2CACHE: " fmt
+
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/cpu_pm.h>
+#include <linux/cpuhotplug.h>
+#include <linux/bitfield.h>
+#include "sifive_pl2.h"
+
+static DEFINE_PER_CPU(struct sifive_pl2_state, sifive_pl2_state);
+
+static void sifive_pl2_state_save(struct sifive_pl2_state *pl2_state)
+{
+	void __iomem *pl2_base = pl2_state->pl2_base;
+
+	if (!pl2_base)
+		return;
+
+	pl2_state->config1 = readl(pl2_base + SIFIVE_PL2_CONFIG1_OFFSET);
+	pl2_state->config0 = readq(pl2_base + SIFIVE_PL2_CONFIG0_OFFSET);
+	pl2_state->pmclientfilter = readq(pl2_base + SIFIVE_PL2_PMCLIENT_OFFSET);
+}
+
+static void sifive_pl2_state_restore(struct sifive_pl2_state *pl2_state)
+{
+	void __iomem *pl2_base = pl2_state->pl2_base;
+
+	if (!pl2_base)
+		return;
+
+	writel(pl2_state->config1, pl2_base + SIFIVE_PL2_CONFIG1_OFFSET);
+	writeq(pl2_state->config0, pl2_base + SIFIVE_PL2_CONFIG0_OFFSET);
+	writeq(pl2_state->pmclientfilter, pl2_base + SIFIVE_PL2_PMCLIENT_OFFSET);
+}
+
+/*
+ * CPU Hotplug call back function
+ */
+static int sifive_pl2_online_cpu(unsigned int cpu)
+{
+	struct sifive_pl2_state *pl2_state = this_cpu_ptr(&sifive_pl2_state);
+
+	sifive_pl2_state_restore(pl2_state);
+
+	return 0;
+}
+
+static int sifive_pl2_offline_cpu(unsigned int cpu)
+{
+	struct sifive_pl2_state *pl2_state = this_cpu_ptr(&sifive_pl2_state);
+
+	/* Save the pl2 state */
+	sifive_pl2_state_save(pl2_state);
+
+	return 0;
+}
+
+/*
+ *  PM notifer for suspend to ram
+ */
+#ifdef CONFIG_CPU_PM
+static int sifive_pl2_pm_notify(struct notifier_block *b, unsigned long cmd,
+				void *v)
+{
+	struct sifive_pl2_state *pl2_state = this_cpu_ptr(&sifive_pl2_state);
+
+	switch (cmd) {
+	case CPU_PM_ENTER:
+		/* Save the pl2 state */
+		sifive_pl2_state_save(pl2_state);
+		break;
+	case CPU_PM_ENTER_FAILED:
+	case CPU_PM_EXIT:
+		sifive_pl2_state_restore(pl2_state);
+		break;
+	default:
+		break;
+	}
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block sifive_pl2_pm_notifier_block = {
+	.notifier_call = sifive_pl2_pm_notify,
+};
+
+static inline void sifive_pl2_pm_init(void)
+{
+	cpu_pm_register_notifier(&sifive_pl2_pm_notifier_block);
+}
+
+#else
+static inline void sifive_pl2_pm_init(void) { }
+#endif /* CONFIG_CPU_PM */
+
+static const struct of_device_id sifive_pl2_cache_of_ids[] = {
+	{ .compatible = "sifive,pl2cache1" },
+	{ /* sentinel value */ }
+};
+
+static void pl2_config_read(void __iomem *pl2_base, int cpu)
+{
+	u32 cfg, banks, ways, cacheline, sets;
+
+	cfg = readl(pl2_base + SIFIVE_PL2CACHE_CONFIG);
+	banks = FIELD_GET(SIFIVE_PL2CACHE_CONFIG_BANK_MASK, cfg);
+	ways = FIELD_GET(SIFIVE_PL2CACHE_CONFIG_WAYS_MASK, cfg);
+	cacheline = FIELD_GET(SIFIVE_PL2CACHE_CONFIG_BLKS_MASK, cfg);
+	sets = FIELD_GET(SIFIVE_PL2CACHE_CONFIG_SETS_MASK, cfg);
+	pr_info("%u banks, ways/bank=%u, bytes/block=%llu, sets:%llu, size:%d for CPU:%d\n",
+		banks, ways, BIT_ULL(cacheline), BIT_ULL(sets), ways << (sets + cacheline), cpu);
+}
+
+static int sifive_pl2_cache_dev_probe(struct platform_device *pdev)
+{
+	struct device_node *cpu_node, *pl2_node;
+	struct sifive_pl2_state *pl2_state = NULL;
+	struct resource *res;
+	void __iomem *pl2_base;
+	int cpu;
+
+	/* Traverse all cpu nodes to find the one mapping to its pl2 node. */
+	for_each_cpu(cpu, cpu_possible_mask) {
+		cpu_node = of_cpu_device_node_get(cpu);
+		pl2_node = of_parse_phandle(cpu_node, "next-level-cache", 0);
+
+		/* Found it! */
+		if (dev_of_node(&pdev->dev) == pl2_node) {
+			/* Use cpu to get its percpu data sifive_pl2_state. */
+			pl2_state = per_cpu_ptr(&sifive_pl2_state, cpu);
+			break;
+		}
+	}
+
+	if (!pl2_state) {
+		pr_err("Failed to find CPU node for %s.\n", pdev->name);
+		return -EINVAL;
+	}
+
+	/* Set base address of select and counter registers. */
+	pl2_base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
+	if (IS_ERR(pl2_base))
+		return PTR_ERR(pl2_base);
+
+	/* Print pL2 configs. */
+	pl2_config_read(pl2_base, cpu);
+	pl2_state->pl2_base = pl2_base;
+
+	return 0;
+}
+
+static struct platform_driver sifive_pl2_cache_driver = {
+	.driver = {
+		   .name = "SiFive-pL2-cache",
+		   .of_match_table = sifive_pl2_cache_of_ids,
+		   },
+	.probe = sifive_pl2_cache_dev_probe,
+};
+
+static int __init sifive_pl2_cache_init(void)
+{
+	int ret;
+
+	ret = cpuhp_setup_state(CPUHP_AP_RISCV_SIFIVE_PL2_ONLINE,
+				"soc/sifive/pl2:online",
+				sifive_pl2_online_cpu,
+				sifive_pl2_offline_cpu);
+	if (ret < 0) {
+		pr_err("Failed to register CPU hotplug notifier %d\n", ret);
+		return ret;
+	}
+
+	ret = platform_driver_register(&sifive_pl2_cache_driver);
+	if (ret) {
+		pr_err("Failed to register sifive_pl2_cache_driver: %d\n", ret);
+		cpuhp_remove_state(CPUHP_AP_RISCV_SIFIVE_PL2_ONLINE);
+		return ret;
+	}
+
+	sifive_pl2_pm_init();
+
+	return 0;
+}
+
+device_initcall(sifive_pl2_cache_init);
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index 25b6e6e6ba6b..f2df088bf7eb 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -209,6 +209,7 @@ enum cpuhp_state {
 	CPUHP_AP_IRQ_AFFINITY_ONLINE,
 	CPUHP_AP_BLK_MQ_ONLINE,
 	CPUHP_AP_ARM_MVEBU_SYNC_CLOCKS,
+	CPUHP_AP_RISCV_SIFIVE_PL2_ONLINE,
 	CPUHP_AP_X86_INTEL_EPB_ONLINE,
 	CPUHP_AP_PERF_ONLINE,
 	CPUHP_AP_PERF_X86_ONLINE,
-- 
2.40.1


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

Re: [PATCH v2 2/3] soc: sifive: Add SiFive private L2 cache driver

[Conor Dooley]

[-- Attachment #1.1: Type: text/plain, Size: 3715 bytes --]

Hey,

On Thu, Jul 20, 2023 at 09:51:20PM +0800, Eric Lin wrote:
> This adds SiFive private L2 cache driver which will show
> cache config information when booting and add cpu hotplug
> callback functions.
> 
> Signed-off-by: Eric Lin <eric.lin@sifive.com>
> Co-developed-by: Nick Hu <nick.hu@sifive.com>
> Signed-off-by: Nick Hu <nick.hu@sifive.com>
> Reviewed-by: Zong Li <zong.li@sifive.com>

> +static void pl2_config_read(void __iomem *pl2_base, int cpu)

This function's prefix does not match the rest of the driver.

> +{
> +	u32 cfg, banks, ways, cacheline, sets;
> +
> +	cfg = readl(pl2_base + SIFIVE_PL2CACHE_CONFIG);
> +	banks = FIELD_GET(SIFIVE_PL2CACHE_CONFIG_BANK_MASK, cfg);
> +	ways = FIELD_GET(SIFIVE_PL2CACHE_CONFIG_WAYS_MASK, cfg);
> +	cacheline = FIELD_GET(SIFIVE_PL2CACHE_CONFIG_BLKS_MASK, cfg);
> +	sets = FIELD_GET(SIFIVE_PL2CACHE_CONFIG_SETS_MASK, cfg);
> +	pr_info("%u banks, ways/bank=%u, bytes/block=%llu, sets:%llu, size:%d for CPU:%d\n",
> +		banks, ways, BIT_ULL(cacheline), BIT_ULL(sets), ways << (sets + cacheline), cpu);
> +}

My OCD quite dislikes how the formatting here is not consistent.
"%u banks"
"ways/bank=%u"
"sets:%llu"

Could you please do me a favour and pick just one style here?

> +
> +static int sifive_pl2_cache_dev_probe(struct platform_device *pdev)
> +{
> +	struct device_node *cpu_node, *pl2_node;
> +	struct sifive_pl2_state *pl2_state = NULL;
> +	struct resource *res;
> +	void __iomem *pl2_base;
> +	int cpu;
> +
> +	/* Traverse all cpu nodes to find the one mapping to its pl2 node. */

While comments like this are somewhat useful...

> +	for_each_cpu(cpu, cpu_possible_mask) {
> +		cpu_node = of_cpu_device_node_get(cpu);
> +		pl2_node = of_parse_phandle(cpu_node, "next-level-cache", 0);
> +
> +		/* Found it! */
> +		if (dev_of_node(&pdev->dev) == pl2_node) {
> +			/* Use cpu to get its percpu data sifive_pl2_state. */
> +			pl2_state = per_cpu_ptr(&sifive_pl2_state, cpu);
> +			break;
> +		}
> +	}
> +
> +	if (!pl2_state) {
> +		pr_err("Failed to find CPU node for %s.\n", pdev->name);
> +		return -EINVAL;
> +	}
> +
> +	/* Set base address of select and counter registers. */

...something like this just restates what this function always does.
It's the same in some other places, with things like:
	/* save the state */
	save_state();
Could you drop the ones that restate the obvious please?

> +	pl2_base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
> +	if (IS_ERR(pl2_base))
> +		return PTR_ERR(pl2_base);
> +
> +	/* Print pL2 configs. */
> +	pl2_config_read(pl2_base, cpu);
> +	pl2_state->pl2_base = pl2_base;
> +
> +	return 0;
> +}
> +
> +static struct platform_driver sifive_pl2_cache_driver = {
> +	.driver = {
> +		   .name = "SiFive-pL2-cache",
> +		   .of_match_table = sifive_pl2_cache_of_ids,
> +		   },
> +	.probe = sifive_pl2_cache_dev_probe,
> +};
> +
> +static int __init sifive_pl2_cache_init(void)

Why is the split between initcall and normal probe function required?
Does the hotplug stuff require that?

> +{
> +	int ret;
> +
> +	ret = cpuhp_setup_state(CPUHP_AP_RISCV_SIFIVE_PL2_ONLINE,
> +				"soc/sifive/pl2:online",
> +				sifive_pl2_online_cpu,
> +				sifive_pl2_offline_cpu);
> +	if (ret < 0) {
> +		pr_err("Failed to register CPU hotplug notifier %d\n", ret);
> +		return ret;
> +	}
> +
> +	ret = platform_driver_register(&sifive_pl2_cache_driver);
> +	if (ret) {
> +		pr_err("Failed to register sifive_pl2_cache_driver: %d\n", ret);
> +		cpuhp_remove_state(CPUHP_AP_RISCV_SIFIVE_PL2_ONLINE);
> +		return ret;
> +	}
> +
> +	sifive_pl2_pm_init();
> +
> +	return 0;
> +}

Cheers,
Conor.

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

[-- Attachment #2: Type: text/plain, Size: 161 bytes --]

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

[PATCH v2 3/3] soc: sifive: Add SiFive private L2 cache PMU driver

[Eric Lin]

From: Greentime Hu <greentime.hu@sifive.com>

The SiFive private L2 cache PMU is per-core and supports
per-task profiling and event counting. Users can use the
perf tool to profile by event name and event id.
Example:
$ perf stat -C 0 -e /sifive_pl2_pmu/inner_acquire_block_btot/
                -e /sifive_pl2_pmu/inner_acquire_block_ntob/
                -e /sifive_pl2_pmu/inner_acquire_block_ntot/ ls

 Performance counter stats for 'CPU(s) 0':

               300      sifive_pl2_pmu/inner_acquire_block_btot/
             17801      sifive_pl2_pmu/inner_acquire_block_ntob/
              5253      sifive_pl2_pmu/inner_acquire_block_ntot/

       0.088917326 seconds time elapsed

$ perf stat -C 0 -e /sifive_pl2_pmu/event=0x10001/
                -e /sifive_pl2_pmu/event=0x4001/
                -e /sifive_pl2_pmu/event=0x8001/ ls

 Performance counter stats for 'CPU(s) 0':

               251      sifive_pl2_pmu/event=0x10001/
              2620      sifive_pl2_pmu/event=0x4001/
               644      sifive_pl2_pmu/event=0x8001/

       0.092827110 seconds time elapsed

Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
Co-developed-by: Eric Lin <eric.lin@sifive.com>
Signed-off-by: Eric Lin <eric.lin@sifive.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Nick Hu <nick.hu@sifive.com>
---
 drivers/perf/Kconfig                  |  10 +
 drivers/perf/Makefile                 |   1 +
 drivers/perf/sifive_pl2_pmu.c         | 602 ++++++++++++++++++++++++++
 drivers/soc/sifive/sifive_pl2.h       |   2 +
 drivers/soc/sifive/sifive_pl2_cache.c |  10 +-
 5 files changed, 624 insertions(+), 1 deletion(-)
 create mode 100644 drivers/perf/sifive_pl2_pmu.c

diff --git a/drivers/perf/Kconfig b/drivers/perf/Kconfig
index f4572a5cca72..d6245122ffb2 100644
--- a/drivers/perf/Kconfig
+++ b/drivers/perf/Kconfig
@@ -234,4 +234,14 @@ config CXL_PMU
 
 	  If unsure say 'm'.
 
+config SIFIVE_PL2_PMU
+	bool "Sifive private L2 Cache PMU"
+	depends on SIFIVE_PL2 && PERF_EVENTS
+	default y
+	help
+	  Support for the private L2 cache controller performance monitor unit
+	  (PMU) on SiFive platforms. The SiFive private L2 PMU can monitor the
+	  each hart L2 cache performance and it consists of a set of event
+	  programmable counters and their event selector registers.
+
 endmenu
diff --git a/drivers/perf/Makefile b/drivers/perf/Makefile
index 16b3ec4db916..3141782dbfc9 100644
--- a/drivers/perf/Makefile
+++ b/drivers/perf/Makefile
@@ -26,3 +26,4 @@ obj-$(CONFIG_ALIBABA_UNCORE_DRW_PMU) += alibaba_uncore_drw_pmu.o
 obj-$(CONFIG_ARM_CORESIGHT_PMU_ARCH_SYSTEM_PMU) += arm_cspmu/
 obj-$(CONFIG_MESON_DDR_PMU) += amlogic/
 obj-$(CONFIG_CXL_PMU) += cxl_pmu.o
+obj-$(CONFIG_SIFIVE_PL2_PMU) += sifive_pl2_pmu.o
diff --git a/drivers/perf/sifive_pl2_pmu.c b/drivers/perf/sifive_pl2_pmu.c
new file mode 100644
index 000000000000..bbdc006f0c8d
--- /dev/null
+++ b/drivers/perf/sifive_pl2_pmu.c
@@ -0,0 +1,602 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SiFive private L2 cache controller PMU Driver
+ *
+ * Copyright (C) 2018-2023 SiFive, Inc.
+ */
+
+#define pr_fmt(fmt) "pL2CACHE_PMU: " fmt
+
+#include <linux/kprobes.h>
+#include <linux/kernel.h>
+#include <linux/kdebug.h>
+#include <linux/mutex.h>
+#include <linux/bitmap.h>
+#include <linux/perf_event.h>
+#include <linux/atomic.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/cpu_pm.h>
+
+#define SIFIVE_PL2_PMU_MAX_COUNTERS	64
+#define SIFIVE_PL2_SELECT_BASE_OFFSET	0x2000
+#define SIFIVE_PL2_COUNTER_BASE_OFFSET	0x3000
+
+#define SIFIVE_PL2_COUNTER_MASK   GENMASK_ULL(63, 0)
+
+struct sifive_pl2_pmu_event {
+	struct perf_event **events;
+	void __iomem *event_counter_base;
+	void __iomem *event_select_base;
+	u32 counters;
+	DECLARE_BITMAP(used_mask, SIFIVE_PL2_PMU_MAX_COUNTERS);
+};
+
+struct sifive_pl2_pmu {
+	struct pmu *pmu;
+};
+
+static bool pl2pmu_init_done;
+static struct sifive_pl2_pmu sifive_pl2_pmu;
+static DEFINE_PER_CPU(struct sifive_pl2_pmu_event, sifive_pl2_pmu_event);
+
+#ifndef readq
+static inline unsigned long long readq(void __iomem *addr)
+{
+	return readl(addr) | (((unsigned long long)readl(addr + 4)) << 32LL);
+}
+#endif
+
+#ifndef writeq
+static inline void writeq(unsigned long long v, void __iomem *addr)
+{
+	writel(lower_32_bits(v), addr);
+	writel(upper_32_bits(v), addr + 4);
+}
+#endif
+
+/* formats */
+static ssize_t sifive_pl2_pmu_format_show(struct device *dev,
+					  struct device_attribute *attr,
+					  char *buf)
+{
+	struct dev_ext_attribute *eattr;
+
+	eattr = container_of(attr, struct dev_ext_attribute, attr);
+	return sysfs_emit(buf, "%s\n", (char *)eattr->var);
+}
+
+#define SIFIVE_PL2_PMU_PMU_FORMAT_ATTR(_name, _config)				\
+	(&((struct dev_ext_attribute[]) {					\
+		{ .attr = __ATTR(_name, 0444, sifive_pl2_pmu_format_show, NULL),\
+		  .var = (void *)_config, }					\
+	})[0].attr.attr)
+
+static struct attribute *sifive_pl2_pmu_formats[] = {
+	SIFIVE_PL2_PMU_PMU_FORMAT_ATTR(event, "config:0-63"),
+	NULL,
+};
+
+static struct attribute_group sifive_pl2_pmu_format_group = {
+	.name = "format",
+	.attrs = sifive_pl2_pmu_formats,
+};
+
+/* events */
+
+static ssize_t sifive_pl2_pmu_event_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *page)
+{
+	struct perf_pmu_events_attr *pmu_attr;
+
+	pmu_attr = container_of(attr, struct perf_pmu_events_attr, attr);
+	return sysfs_emit(page, "event=0x%02llx\n", pmu_attr->id);
+}
+
+#define SET_EVENT_SELECT(_event, _set)	(((u64)1 << ((_event) + 8)) | (_set))
+#define PL2_PMU_EVENT_ATTR(_name, _event, _set)			\
+	PMU_EVENT_ATTR_ID(_name, sifive_pl2_pmu_event_show,	\
+	SET_EVENT_SELECT(_event, _set))
+
+enum pl2_pmu_event_set1 {
+	INNER_PUT_FULL_DATA = 0,
+	INNER_PUT_PARTIAL_DATA,
+	INNER_ARITHMETIC_DATA,
+	INNER_GET,
+	INNER_PREFETCH_READ,
+	INNER_PREFETCH_WRITE,
+	INNER_ACQUIRE_BLOCK_NTOB,
+	INNER_ACQUIRE_BLOCK_NTOT,
+	INNER_ACQUIRE_BLOCK_BTOT,
+	INNER_ACQUIRE_PERM_NTOT,
+	INNER_ACQUIRE_PERM_BTOT,
+	INNER_RELEASE_TTOB,
+	INNER_RELEASE_TTON,
+	INNER_RELEASE_BTON,
+	INNER_RELEASE_DATA_TTOB,
+	INNER_RELEASE_DATA_TTON,
+	INNER_RELEASE_DATA_BTON,
+	INNER_RELEASE_DATA_TTOT,
+	INNER_PROBE_BLOCK_TOT,
+	INNER_PROBE_BLOCK_TOB,
+	INNER_PROBE_BLOCK_TON,
+	INNER_PROBE_PERM_TON,
+	INNER_PROBE_ACK_TTOB,
+	INNER_PROBE_ACK_TTON,
+	INNER_PROBE_ACK_BTON,
+	INNER_PROBE_ACK_TTOT,
+	INNER_PROBE_ACK_BTOB,
+	INNER_PROBE_ACK_NTON,
+	INNER_PROBE_ACK_DATA_TTOB,
+	INNER_PROBE_ACK_DATA_TTON,
+	INNER_PROBE_ACK_DATA_TTOT,
+	PL2_PMU_MAX_EVENT1_IDX
+};
+
+enum pl2_pmu_event_set2 {
+	INNER_PUT_FULL_DATA_HIT = 0,
+	INNER_PUT_PARTIAL_DATA_HIT,
+	INNER_ARITHMETIC_DATA_HIT,
+	INNER_GET_HIT,
+	INNER_PREFETCH_READ_HIT,
+	INNER_ACQUIRE_BLOCK_NTOB_HIT,
+	INNER_ACQUIRE_PERM_NTOT_HIT,
+	INNER_RELEASE_TTOB_HIT,
+	INNER_RELEASE_DATA_TTOB_HIT,
+	OUTER_PROBE_BLOCK_TOT_HIT,
+	INNER_PUT_FULL_DATA_HIT_SHARED,
+	INNER_PUT_PARTIAL_DATA_HIT_SHARED,
+	INNER_ARITHMETIC_DATA_HIT_SHARED,
+	INNER_GET_HIT_SHARED,
+	INNER_PREFETCH_READ_HIT_SHARED,
+	INNER_ACQUIRE_BLOCK_HIT_SHARED,
+	INNER_ACQUIRE_PERM_NTOT_HIT_SHARED,
+	OUTER_PROBE_BLOCK_TOT_HIT_SHARED,
+	OUTER_PROBE_BLOCK_TOT_HIT_DIRTY,
+	PL2_PMU_MAX_EVENT2_IDX
+};
+
+enum pl2_pmu_event_set3 {
+	OUTER_PUT_FULL_DATA = 0,
+	OUTER_PUT_PARTIAL_DATA,
+	OUTER_ARITHMETIC_DATA,
+	OUTER_GET,
+	OUTER_PREFETCH_READ,
+	OUTER_PREFETCH_WRITE,
+	OUTER_ACQUIRE_BLOCK_NTOB,
+	OUTER_ACQUIRE_BLOCK_NTOT,
+	OUTER_ACQUIRE_BLOCK_BTOT,
+	OUTER_ACQUIRE_PERM_NTOT,
+	OUTER_ACQUIRE_PERM_BTOT,
+	OUTER_RELEARE_TTOB,
+	OUTER_RELEARE_TTON,
+	OUTER_RELEARE_BTON,
+	OUTER_RELEARE_DATA_TTOB,
+	OUTER_RELEARE_DATA_TTON,
+	OUTER_RELEARE_DATA_BTON,
+	OUTER_RELEARE_DATA_TTOT,
+	OUTER_PROBE_BLOCK_TOT,
+	OUTER_PROBE_BLOCK_TOB,
+	OUTER_PROBE_BLOCK_TON,
+	OUTER_PROBE_PERM_TON,
+	OUTER_PROBE_ACK_TTOB,
+	OUTER_PROBE_ACK_TTON,
+	OUTER_PROBE_ACK_BTON,
+	OUTER_PROBE_ACK_TTOT,
+	OUTER_PROBE_ACK_BTOB,
+	OUTER_PROBE_ACK_NTON,
+	OUTER_PROBE_ACK_DATA_TTOB,
+	OUTER_PROBE_ACK_DATA_TTON,
+	OUTER_PROBE_ACK_DATA_TTOT,
+	PL2_PMU_MAX_EVENT3_IDX
+};
+
+enum pl2_pmu_event_set4 {
+	INNER_HINT_HITS_MSHR = 0,
+	INNER_READ_HITS_MSHR,
+	INNER_WRITE_HITS_MSHR,
+	INNER_READ_REPLAY,
+	INNER_WRITE_REPLAY,
+	OUTER_PROBE_REPLAY,
+	PL2_PMU_MAX_EVENT4_IDX
+};
+
+static struct attribute *sifive_pl2_pmu_events[] = {
+	PL2_PMU_EVENT_ATTR(inner_put_full_data, INNER_PUT_FULL_DATA, 1),
+	PL2_PMU_EVENT_ATTR(inner_put_partial_data, INNER_PUT_PARTIAL_DATA, 1),
+	PL2_PMU_EVENT_ATTR(inner_arithmetic_data, INNER_ARITHMETIC_DATA, 1),
+	PL2_PMU_EVENT_ATTR(inner_get, INNER_GET, 1),
+	PL2_PMU_EVENT_ATTR(inner_prefetch_read, INNER_PREFETCH_READ, 1),
+	PL2_PMU_EVENT_ATTR(inner_prefetch_write, INNER_PREFETCH_WRITE, 1),
+	PL2_PMU_EVENT_ATTR(inner_acquire_block_ntob, INNER_ACQUIRE_BLOCK_NTOB, 1),
+	PL2_PMU_EVENT_ATTR(inner_acquire_block_ntot, INNER_ACQUIRE_BLOCK_NTOT, 1),
+	PL2_PMU_EVENT_ATTR(inner_acquire_block_btot, INNER_ACQUIRE_BLOCK_BTOT, 1),
+	PL2_PMU_EVENT_ATTR(inner_acquire_perm_ntot, INNER_ACQUIRE_PERM_NTOT, 1),
+	PL2_PMU_EVENT_ATTR(inner_acquire_perm_btot, INNER_ACQUIRE_PERM_BTOT, 1),
+	PL2_PMU_EVENT_ATTR(inner_release_ttob, INNER_RELEASE_TTOB, 1),
+	PL2_PMU_EVENT_ATTR(inner_release_tton, INNER_RELEASE_TTON, 1),
+	PL2_PMU_EVENT_ATTR(inner_release_bton, INNER_RELEASE_BTON, 1),
+	PL2_PMU_EVENT_ATTR(inner_release_data_ttob, INNER_RELEASE_DATA_TTOB, 1),
+	PL2_PMU_EVENT_ATTR(inner_release_data_tton, INNER_RELEASE_DATA_TTON, 1),
+	PL2_PMU_EVENT_ATTR(inner_release_data_bton, INNER_RELEASE_DATA_BTON, 1),
+	PL2_PMU_EVENT_ATTR(inner_release_data_ttot, INNER_RELEASE_DATA_TTOT, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_block_tot, INNER_PROBE_BLOCK_TOT, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_block_tob, INNER_PROBE_BLOCK_TOB, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_block_ton, INNER_PROBE_BLOCK_TON, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_perm_ton, INNER_PROBE_PERM_TON, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_ack_ttob, INNER_PROBE_ACK_TTOB, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_ack_tton, INNER_PROBE_ACK_TTON, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_ack_bton, INNER_PROBE_ACK_BTON, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_ack_ttot, INNER_PROBE_ACK_TTOT, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_ack_btob, INNER_PROBE_ACK_BTOB, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_ack_nton, INNER_PROBE_ACK_NTON, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_ack_data_ttob, INNER_PROBE_ACK_DATA_TTOB, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_ack_data_tton, INNER_PROBE_ACK_DATA_TTON, 1),
+	PL2_PMU_EVENT_ATTR(inner_probe_ack_data_ttot, INNER_PROBE_ACK_DATA_TTOT, 1),
+
+	PL2_PMU_EVENT_ATTR(inner_put_full_data_hit, INNER_PUT_FULL_DATA_HIT, 2),
+	PL2_PMU_EVENT_ATTR(inner_put_partial_data_hit, INNER_PUT_PARTIAL_DATA_HIT, 2),
+	PL2_PMU_EVENT_ATTR(inner_arithmetic_data_hit, INNER_ARITHMETIC_DATA_HIT, 2),
+	PL2_PMU_EVENT_ATTR(inner_get_hit, INNER_GET_HIT, 2),
+	PL2_PMU_EVENT_ATTR(inner_prefetch_read_hit, INNER_PREFETCH_READ_HIT, 2),
+	PL2_PMU_EVENT_ATTR(inner_acquire_block_ntob_hit, INNER_ACQUIRE_BLOCK_NTOB_HIT, 2),
+	PL2_PMU_EVENT_ATTR(inner_acquire_perm_ntot_hit, INNER_ACQUIRE_PERM_NTOT_HIT, 2),
+	PL2_PMU_EVENT_ATTR(inner_release_ttob_hit, INNER_RELEASE_TTOB_HIT, 2),
+	PL2_PMU_EVENT_ATTR(inner_release_data_ttob_hit, INNER_RELEASE_DATA_TTOB_HIT, 2),
+	PL2_PMU_EVENT_ATTR(outer_probe_block_tot_hit, OUTER_PROBE_BLOCK_TOT_HIT, 2),
+	PL2_PMU_EVENT_ATTR(inner_put_full_data_hit_shared, INNER_PUT_FULL_DATA_HIT_SHARED, 2),
+	PL2_PMU_EVENT_ATTR(inner_put_partial_data_hit_shared, INNER_PUT_PARTIAL_DATA_HIT_SHARED, 2),
+	PL2_PMU_EVENT_ATTR(inner_arithmetic_data_hit_shared, INNER_ARITHMETIC_DATA_HIT_SHARED, 2),
+	PL2_PMU_EVENT_ATTR(inner_get_hit_shared, INNER_GET_HIT_SHARED, 2),
+	PL2_PMU_EVENT_ATTR(inner_prefetch_read_hit_shared, INNER_PREFETCH_READ_HIT_SHARED, 2),
+	PL2_PMU_EVENT_ATTR(inner_acquire_block_hit_shared, INNER_ACQUIRE_BLOCK_HIT_SHARED, 2),
+	PL2_PMU_EVENT_ATTR(inner_acquire_perm_hit_shared, INNER_ACQUIRE_PERM_NTOT_HIT_SHARED, 2),
+	PL2_PMU_EVENT_ATTR(outer_probe_block_tot_hit_shared, OUTER_PROBE_BLOCK_TOT_HIT_SHARED, 2),
+	PL2_PMU_EVENT_ATTR(outer_probe_block_tot_hit_dirty, OUTER_PROBE_BLOCK_TOT_HIT_DIRTY, 2),
+
+	PL2_PMU_EVENT_ATTR(outer_put_full_data, OUTER_PUT_FULL_DATA, 3),
+	PL2_PMU_EVENT_ATTR(outer_put_partial_data, OUTER_PUT_PARTIAL_DATA, 3),
+	PL2_PMU_EVENT_ATTR(outer_arithmetic_data, OUTER_ARITHMETIC_DATA, 3),
+	PL2_PMU_EVENT_ATTR(outer_get, OUTER_GET, 3),
+	PL2_PMU_EVENT_ATTR(outer_prefetch_read, OUTER_PREFETCH_READ, 3),
+	PL2_PMU_EVENT_ATTR(outer_prefetch_write, OUTER_PREFETCH_WRITE, 3),
+	PL2_PMU_EVENT_ATTR(outer_acquire_block_ntob, OUTER_ACQUIRE_BLOCK_NTOB, 3),
+	PL2_PMU_EVENT_ATTR(outer_acquire_block_ntot, OUTER_ACQUIRE_BLOCK_NTOT, 3),
+	PL2_PMU_EVENT_ATTR(outer_acquire_block_btot, OUTER_ACQUIRE_BLOCK_BTOT, 3),
+	PL2_PMU_EVENT_ATTR(outer_acquire_perm_ntot, OUTER_ACQUIRE_PERM_NTOT, 3),
+	PL2_PMU_EVENT_ATTR(outer_acquire_perm_btot, OUTER_ACQUIRE_PERM_BTOT, 3),
+	PL2_PMU_EVENT_ATTR(outer_release_ttob, OUTER_RELEARE_TTOB, 3),
+	PL2_PMU_EVENT_ATTR(outer_release_tton, OUTER_RELEARE_TTON, 3),
+	PL2_PMU_EVENT_ATTR(outer_release_bton, OUTER_RELEARE_BTON, 3),
+	PL2_PMU_EVENT_ATTR(outer_release_data_ttob, OUTER_RELEARE_DATA_TTOB, 3),
+	PL2_PMU_EVENT_ATTR(outer_release_data_tton, OUTER_RELEARE_DATA_TTON, 3),
+	PL2_PMU_EVENT_ATTR(outer_release_data_bton, OUTER_RELEARE_DATA_BTON, 3),
+	PL2_PMU_EVENT_ATTR(outer_release_data_ttot, OUTER_RELEARE_DATA_TTOT, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_block_tot, OUTER_PROBE_BLOCK_TOT, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_block_tob, OUTER_PROBE_BLOCK_TOB, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_block_ton, OUTER_PROBE_BLOCK_TON, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_perm_ton, OUTER_PROBE_PERM_TON, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_ack_ttob, OUTER_PROBE_ACK_TTOB, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_ack_tton, OUTER_PROBE_ACK_TTON, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_ack_bton, OUTER_PROBE_ACK_BTON, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_ack_ttot, OUTER_PROBE_ACK_TTOT, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_ack_btob, OUTER_PROBE_ACK_BTOB, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_ack_nton, OUTER_PROBE_ACK_NTON, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_ack_data_ttob, OUTER_PROBE_ACK_DATA_TTOB, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_ack_data_tton, OUTER_PROBE_ACK_DATA_TTON, 3),
+	PL2_PMU_EVENT_ATTR(outer_probe_ack_data_ttot, OUTER_PROBE_ACK_DATA_TTOT, 3),
+
+	PL2_PMU_EVENT_ATTR(inner_hint_hits_mshr, INNER_HINT_HITS_MSHR, 4),
+	PL2_PMU_EVENT_ATTR(inner_read_hits_mshr, INNER_READ_HITS_MSHR, 4),
+	PL2_PMU_EVENT_ATTR(inner_write_hits_mshr, INNER_WRITE_HITS_MSHR, 4),
+	PL2_PMU_EVENT_ATTR(inner_read_replay, INNER_READ_REPLAY, 4),
+	PL2_PMU_EVENT_ATTR(inner_write_replay, INNER_WRITE_REPLAY, 4),
+	PL2_PMU_EVENT_ATTR(outer_probe_replay, OUTER_PROBE_REPLAY, 4),
+	NULL
+};
+
+static struct attribute_group sifive_pl2_pmu_events_group = {
+	.name = "events",
+	.attrs = sifive_pl2_pmu_events,
+};
+
+/*
+ * Per PMU device attribute groups
+ */
+
+static const struct attribute_group *sifive_pl2_pmu_attr_grps[] = {
+	&sifive_pl2_pmu_format_group,
+	&sifive_pl2_pmu_events_group,
+	NULL,
+};
+
+/*
+ * Low-level functions: reading and writing counters
+ */
+
+static inline u64 read_counter(int idx)
+{
+	struct sifive_pl2_pmu_event *ptr = this_cpu_ptr(&sifive_pl2_pmu_event);
+
+	if (WARN_ON_ONCE(idx < 0 || idx > ptr->counters))
+		return -EINVAL;
+
+	return readq(ptr->event_counter_base + idx * 8);
+}
+
+static inline void write_counter(int idx, u64 val)
+{
+	struct sifive_pl2_pmu_event *ptr = this_cpu_ptr(&sifive_pl2_pmu_event);
+
+	writeq(val, ptr->event_counter_base + idx * 8);
+}
+
+/*
+ * pmu->read: read and update the counter
+ */
+static void sifive_pl2_pmu_read(struct perf_event *event)
+{
+	struct hw_perf_event *hwc = &event->hw;
+	u64 prev_raw_count, new_raw_count;
+	u64 oldval;
+	int idx = hwc->idx;
+	u64 delta;
+
+	do {
+		prev_raw_count = local64_read(&hwc->prev_count);
+		new_raw_count = read_counter(idx);
+
+		oldval = local64_cmpxchg(&hwc->prev_count, prev_raw_count,
+					 new_raw_count);
+	} while (oldval != prev_raw_count);
+
+	/* delta is the value to update the counter we maintain in the kernel. */
+	delta = (new_raw_count - prev_raw_count) & SIFIVE_PL2_COUNTER_MASK;
+	local64_add(delta, &event->count);
+}
+
+/*
+ * State transition functions:
+ *
+ * stop()/start() & add()/del()
+ */
+
+/*
+ * pmu->stop: stop the counter
+ */
+static void sifive_pl2_pmu_stop(struct perf_event *event, int flags)
+{
+	struct hw_perf_event *hwc = &event->hw;
+	struct sifive_pl2_pmu_event *ptr = this_cpu_ptr(&sifive_pl2_pmu_event);
+
+	/* Disable this counter to count events */
+	writeq(0, ptr->event_select_base + (hwc->idx * 8));
+
+	WARN_ON_ONCE(hwc->state & PERF_HES_STOPPED);
+	hwc->state |= PERF_HES_STOPPED;
+
+	if ((flags & PERF_EF_UPDATE) && !(hwc->state & PERF_HES_UPTODATE)) {
+		sifive_pl2_pmu_read(event);
+		hwc->state |= PERF_HES_UPTODATE;
+	}
+}
+
+/*
+ * pmu->start: start the event.
+ */
+static void sifive_pl2_pmu_start(struct perf_event *event, int flags)
+{
+	struct hw_perf_event *hwc = &event->hw;
+	struct sifive_pl2_pmu_event *ptr = this_cpu_ptr(&sifive_pl2_pmu_event);
+
+	if (WARN_ON_ONCE(!(event->hw.state & PERF_HES_STOPPED)))
+		return;
+
+	if (flags & PERF_EF_RELOAD)
+		WARN_ON_ONCE(!(event->hw.state & PERF_HES_UPTODATE));
+
+	hwc->state = 0;
+	perf_event_update_userpage(event);
+
+	/* Set initial value 0 */
+	local64_set(&hwc->prev_count, 0);
+	write_counter(hwc->idx, 0);
+
+	/* Enable counter to count these events */
+	writeq(hwc->config, ptr->event_select_base + (hwc->idx * 8));
+}
+
+/*
+ * pmu->add: add the event to PMU.
+ */
+static int sifive_pl2_pmu_add(struct perf_event *event, int flags)
+{
+	struct hw_perf_event *hwc = &event->hw;
+	struct sifive_pl2_pmu_event *ptr = this_cpu_ptr(&sifive_pl2_pmu_event);
+	int idx;
+	u64 config = event->attr.config;
+	u64 set = config & 0xff;
+	u64 ev_type = config >> 8;
+
+	/* Check if this is a valid set and event. */
+	switch (set) {
+	case 1:
+		if (ev_type >= (BIT_ULL(PL2_PMU_MAX_EVENT1_IDX)))
+			return -ENOENT;
+		break;
+	case 2:
+		if (ev_type >= (BIT_ULL(PL2_PMU_MAX_EVENT2_IDX)))
+			return -ENOENT;
+		break;
+	case 3:
+		if (ev_type >= (BIT_ULL(PL2_PMU_MAX_EVENT3_IDX)))
+			return -ENOENT;
+		break;
+	case 4:
+		if (ev_type >= (BIT_ULL(PL2_PMU_MAX_EVENT4_IDX)))
+			return -ENOENT;
+		break;
+	case 0:
+	default:
+		return -ENOENT;
+	}
+
+	idx = find_first_zero_bit(ptr->used_mask, ptr->counters);
+	/* The counters are all in use. */
+	if (idx == ptr->counters)
+		return -EAGAIN;
+
+	set_bit(idx, ptr->used_mask);
+
+	/* Found an available counter idx for this event. */
+	hwc->idx = idx;
+	ptr->events[hwc->idx] = event;
+
+	hwc->state = PERF_HES_UPTODATE | PERF_HES_STOPPED;
+
+	if (flags & PERF_EF_START)
+		sifive_pl2_pmu_start(event, PERF_EF_RELOAD);
+
+	perf_event_update_userpage(event);
+	return 0;
+}
+
+/*
+ * pmu->del: delete the event from PMU.
+ */
+static void sifive_pl2_pmu_del(struct perf_event *event, int flags)
+{
+	struct sifive_pl2_pmu_event *ptr = this_cpu_ptr(&sifive_pl2_pmu_event);
+	struct hw_perf_event *hwc = &event->hw;
+
+	/* Stop the counter and release this counter. */
+	ptr->events[hwc->idx] = NULL;
+	sifive_pl2_pmu_stop(event, PERF_EF_UPDATE);
+	clear_bit(hwc->idx, ptr->used_mask);
+	perf_event_update_userpage(event);
+}
+
+/*
+ * Event Initialization/Finalization
+ */
+
+static int sifive_pl2_pmu_event_init(struct perf_event *event)
+{
+	struct hw_perf_event *hwc = &event->hw;
+
+	/* Don't allocate hw counter yet. */
+	hwc->idx = -1;
+	hwc->config = event->attr.config;
+
+	return 0;
+}
+
+/*
+ * Initialization
+ */
+
+static struct pmu sifive_pl2_generic_pmu = {
+	.name		= "sifive_pl2_pmu",
+	.task_ctx_nr	= perf_sw_context,
+	.event_init	= sifive_pl2_pmu_event_init,
+	.add		= sifive_pl2_pmu_add,
+	.del		= sifive_pl2_pmu_del,
+	.start		= sifive_pl2_pmu_start,
+	.stop		= sifive_pl2_pmu_stop,
+	.read		= sifive_pl2_pmu_read,
+	.attr_groups	= sifive_pl2_pmu_attr_grps,
+	.capabilities   = PERF_PMU_CAP_NO_EXCLUDE | PERF_PMU_CAP_NO_INTERRUPT,
+};
+
+static struct sifive_pl2_pmu sifive_pl2_pmu = {
+	.pmu = &sifive_pl2_generic_pmu,
+};
+
+/*
+ *  PM notifer for suspend to ram
+ */
+#ifdef CONFIG_CPU_PM
+static int sifive_pl2_pmu_pm_notify(struct notifier_block *b, unsigned long cmd,
+				    void *v)
+{
+	struct sifive_pl2_pmu_event *ptr = this_cpu_ptr(&sifive_pl2_pmu_event);
+	struct perf_event *event;
+	int idx;
+	int enabled_event = bitmap_weight(ptr->used_mask, ptr->counters);
+
+	if (!enabled_event)
+		return NOTIFY_OK;
+
+	for (idx = 0; idx < ptr->counters; idx++) {
+		event = ptr->events[idx];
+		if (!event)
+			continue;
+
+		switch (cmd) {
+		case CPU_PM_ENTER:
+			/* Stop and update the counter */
+			sifive_pl2_pmu_stop(event, PERF_EF_UPDATE);
+			break;
+		case CPU_PM_ENTER_FAILED:
+		case CPU_PM_EXIT:
+			 /* Restore and enable the counter */
+			sifive_pl2_pmu_start(event, PERF_EF_RELOAD);
+			break;
+		default:
+			break;
+		}
+	}
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block sifive_pl2_pmu_pm_notifier_block = {
+	.notifier_call = sifive_pl2_pmu_pm_notify,
+};
+
+static inline void sifive_pl2_pmu_pm_init(void)
+{
+	cpu_pm_register_notifier(&sifive_pl2_pmu_pm_notifier_block);
+}
+
+#else
+static inline void sifive_pl2_pmu_pm_init(void) { }
+#endif /* CONFIG_CPU_PM */
+
+int sifive_pl2_pmu_probe(struct device_node	*pl2_node,
+			 void __iomem *pl2_base, int cpu)
+{
+	struct sifive_pl2_pmu_event *ptr = per_cpu_ptr(&sifive_pl2_pmu_event, cpu);
+	int ret;
+
+	/* Get counter numbers. */
+	ret = of_property_read_u32(pl2_node, "sifive,perfmon-counters", &ptr->counters);
+	if (ret) {
+		pr_err("Not found sifive,perfmon-counters property\n");
+		return -EINVAL;
+	}
+	pr_info("perfmon-counters: %d for CPU %d\n", ptr->counters, cpu);
+
+	/* Allocate perf_event. */
+	ptr->events = kcalloc(ptr->counters, sizeof(struct perf_event), GFP_KERNEL);
+	if (!ptr->events)
+		return -ENOMEM;
+
+	ptr->event_select_base = pl2_base + SIFIVE_PL2_SELECT_BASE_OFFSET;
+	ptr->event_counter_base = pl2_base + SIFIVE_PL2_COUNTER_BASE_OFFSET;
+
+	if (!pl2pmu_init_done) {
+		ret = perf_pmu_register(sifive_pl2_pmu.pmu, sifive_pl2_pmu.pmu->name, -1);
+		if (ret) {
+			pr_err("Failed to register sifive_pl2_pmu.pmu: %d\n", ret);
+			return ret;
+		}
+		sifive_pl2_pmu_pm_init();
+		pl2pmu_init_done = true;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(sifive_pl2_pmu_probe);
diff --git a/drivers/soc/sifive/sifive_pl2.h b/drivers/soc/sifive/sifive_pl2.h
index 9a5c9ee898bd..bc7e5f1da6e6 100644
--- a/drivers/soc/sifive/sifive_pl2.h
+++ b/drivers/soc/sifive/sifive_pl2.h
@@ -24,4 +24,6 @@ struct sifive_pl2_state {
 	u64 pmclientfilter;
 };
 
+int sifive_pl2_pmu_probe(struct device_node *pl2_node,
+			 void __iomem *pl2_base, int cpu);
 #endif /*_SIFIVE_PL2_H */
diff --git a/drivers/soc/sifive/sifive_pl2_cache.c b/drivers/soc/sifive/sifive_pl2_cache.c
index da2dc0eead74..1b9088e1766b 100644
--- a/drivers/soc/sifive/sifive_pl2_cache.c
+++ b/drivers/soc/sifive/sifive_pl2_cache.c
@@ -126,7 +126,7 @@ static int sifive_pl2_cache_dev_probe(struct platform_device *pdev)
 	struct sifive_pl2_state *pl2_state = NULL;
 	struct resource *res;
 	void __iomem *pl2_base;
-	int cpu;
+	int cpu, ret;
 
 	/* Traverse all cpu nodes to find the one mapping to its pl2 node. */
 	for_each_cpu(cpu, cpu_possible_mask) {
@@ -155,6 +155,14 @@ static int sifive_pl2_cache_dev_probe(struct platform_device *pdev)
 	pl2_config_read(pl2_base, cpu);
 	pl2_state->pl2_base = pl2_base;
 
+	if (IS_ENABLED(CONFIG_SIFIVE_PL2_PMU)) {
+		ret = sifive_pl2_pmu_probe(pl2_node, pl2_base, cpu);
+		if (ret) {
+			pr_err("Failed to probe sifive_pl2_pmu driver.\n");
+			return -EINVAL;
+		}
+	}
+
 	return 0;
 }
 
-- 
2.40.1


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv