linux-kernel - [PATCH v3 00/13] Support Andes PMU extension

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Date:   Sun, 22 Oct 2023 23:18:45 +0800
From:   Yu Chien Peter Lin <peterlin@...estech.com>
To:     <acme@...nel.org>, <adrian.hunter@...el.com>,
        <ajones@...tanamicro.com>, <alexander.shishkin@...ux.intel.com>,
        <andre.przywara@....com>, <anup@...infault.org>,
        <aou@...s.berkeley.edu>, <atishp@...shpatra.org>,
        <conor+dt@...nel.org>, <conor.dooley@...rochip.com>,
        <conor@...nel.org>, <devicetree@...r.kernel.org>,
        <dminus@...estech.com>, <evan@...osinc.com>,
        <geert+renesas@...der.be>, <guoren@...nel.org>, <heiko@...ech.de>,
        <irogers@...gle.com>, <jernej.skrabec@...il.com>,
        <jolsa@...nel.org>, <jszhang@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-perf-users@...r.kernel.org>,
        <linux-renesas-soc@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <linux-sunxi@...ts.linux.dev>,
        <locus84@...estech.com>, <magnus.damm@...il.com>,
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        <namhyung@...nel.org>, <palmer@...belt.com>,
        <paul.walmsley@...ive.com>, <peterlin@...estech.com>,
        <peterz@...radead.org>, <prabhakar.mahadev-lad.rj@...renesas.com>,
        <rdunlap@...radead.org>, <robh+dt@...nel.org>,
        <samuel@...lland.org>, <sunilvl@...tanamicro.com>,
        <tglx@...utronix.de>, <tim609@...estech.com>, <uwu@...nowy.me>,
        <wens@...e.org>, <will@...nel.org>, <ycliang@...estech.com>
Subject: [PATCH v3 00/13] Support Andes PMU extension

Hi All,

This patch series introduces the Andes PMU extension, which serves
the same purpose as Sscofpmf. In this version we use FDT-based
probing and the CONFIG_ANDES_CUSTOM_PMU to enable perf sampling
and filtering support.

Its non-standard local interrupt is assigned to bit 18 in the
custom S-mode local interrupt enable/pending registers (slie/slip),
while the interrupt cause is (256 + 18).

The feature needs the PMU device registered in OpenSBI.
The OpenSBI and Linux patches can be found on Andes Technology GitHub
- https://github.com/andestech/opensbi/commits/andes-pmu-support-v2
- https://github.com/andestech/linux/commits/andes-pmu-support-v3

The PMU device tree node used on AX45MP:
- https://github.com/andestech/opensbi/blob/andes-pmu-support-v2/docs/pmu_support.md#example-3

Tested hardware:
- ASUS  Tinker-V (RZ/Five, AX45MP single core)
- Andes AE350    (AX45MP quad core)

Locus Wei-Han Chen (1):
  riscv: andes: Support symbolic FW and HW raw events

Yu Chien Peter Lin (12):
  riscv: errata: Rename defines for Andes
  irqchip/riscv-intc: Allow large non-standard hwirq number
  irqchip/riscv-intc: Introduce Andes IRQ chip
  dt-bindings: riscv: Add Andes interrupt controller compatible string
  riscv: dts: renesas: r9a07g043f: Update compatible string to use Andes
    INTC
  perf: RISC-V: Eliminate redundant IRQ enable/disable operations
  RISC-V: Move T-Head PMU to CPU feature alternative framework
  perf: RISC-V: Introduce Andes PMU for perf event sampling
  dt-bindings: riscv: Add T-Head PMU extension description
  dt-bindings: riscv: Add Andes PMU extension description
  riscv: dts: allwinner: Add T-Head PMU extension
  riscv: dts: renesas: Add Andes PMU extension

 .../devicetree/bindings/riscv/cpus.yaml       |   7 +-
 .../devicetree/bindings/riscv/extensions.yaml |  13 ++
 arch/riscv/Kconfig.errata                     |  13 --
 arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi |   2 +-
 arch/riscv/boot/dts/renesas/r9a07g043f.dtsi   |   4 +-
 arch/riscv/errata/andes/errata.c              |  10 +-
 arch/riscv/errata/thead/errata.c              |  19 ---
 arch/riscv/include/asm/errata_list.h          |  19 +--
 arch/riscv/include/asm/hwcap.h                |   2 +
 arch/riscv/include/asm/vendorid_list.h        |   2 +-
 arch/riscv/kernel/alternative.c               |   2 +-
 arch/riscv/kernel/cpufeature.c                |   2 +
 drivers/irqchip/irq-riscv-intc.c              |  63 +++++++--
 drivers/perf/Kconfig                          |  27 ++++
 drivers/perf/riscv_pmu_sbi.c                  |  51 +++++--
 include/linux/irqchip/irq-riscv-intc.h        |  12 ++
 .../arch/riscv/andes/ax45/firmware.json       |  68 ++++++++++
 .../arch/riscv/andes/ax45/instructions.json   | 127 ++++++++++++++++++
 .../arch/riscv/andes/ax45/memory.json         |  57 ++++++++
 .../arch/riscv/andes/ax45/microarch.json      |  77 +++++++++++
 tools/perf/pmu-events/arch/riscv/mapfile.csv  |   1 +
 21 files changed, 499 insertions(+), 79 deletions(-)
 create mode 100644 include/linux/irqchip/irq-riscv-intc.h
 create mode 100644 tools/perf/pmu-events/arch/riscv/andes/ax45/firmware.json
 create mode 100644 tools/perf/pmu-events/arch/riscv/andes/ax45/instructions.json
 create mode 100644 tools/perf/pmu-events/arch/riscv/andes/ax45/memory.json
 create mode 100644 tools/perf/pmu-events/arch/riscv/andes/ax45/microarch.json

-- 
2.34.1