linux-kernel - Re: [PATCH v6 00/16] Support Andes PMU extension

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Date: Tue, 26 Dec 2023 10:59:55 +0800
From: Yu-Chien Peter Lin <peterlin@...estech.com>
To: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
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Subject: Re: [PATCH v6 00/16] Support Andes PMU extension

Hi Prabhakar,

On Mon, Dec 25, 2023 at 09:06:04PM +0000, Lad, Prabhakar wrote:
> Hi Lin-san,
> 
> On Mon, Dec 25, 2023 at 10:37 AM Yu Chien Peter Lin
> <peterlin@...estech.com> wrote:
> >
> > Hi All,
> >
> > This patch series introduces the Andes PMU extension, which serves
> > the same purpose as Sscofpmf. To use FDT-based probing for hardware
> > support of the PMU extensions, we first convert T-Head's PMU to CPU
> > feature alternative, then add Andes PMU alternatives.
> >
> > 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).
> >
> > Mainline OpenSBI has supported Andes PMU extension:
> > - https://github.com/riscv-software-src/opensbi/tree/master
> > Linux patches (based on v6.7-rc7) can be found on Andes Technology GitHub
> > - https://github.com/andestech/linux/commits/andes-pmu-support-v6
> >
> > The PMU device tree node used on AX45MP:
> > - https://github.com/riscv-software-src/opensbi/blob/master/docs/pmu_support.md#example-3
> >
> > Locus Wei-Han Chen (1):
> >   riscv: andes: Support specifying symbolic firmware and hardware raw
> >     events
> >
> > Yu Chien Peter Lin (15):
> >   riscv: errata: Rename defines for Andes
> >   irqchip/riscv-intc: Allow large non-standard interrupt number
> >   irqchip/riscv-intc: Introduce Andes hart-level interrupt controller
> >   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 interrupt 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 for sun20i-d1s
> >   riscv: dts: sophgo: Add T-Head PMU extension for cv1800b
> >   riscv: dts: sophgo: Add T-Head PMU extension for sg2042
> >   riscv: dts: thead: Add T-Head PMU extension for th1520
> >   riscv: dts: renesas: Add Andes PMU extension for r9a07g043f
> >
> The above patches dont apply cleanly on top of below branches. Can you
> please rebase and re-send.

Sure, will do.

> https://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux.git/log/?h=fixes
> https://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux.git/log/?h=for-next
> https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git/log/?h=renesas-dts-for-v6.8

Thanks for the pointers.

Best regards,
Peter Lin

> Cheers,
> Prabhakar
> 
> >  .../devicetree/bindings/riscv/cpus.yaml       |   6 +-
> >  .../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/boot/dts/sophgo/cv1800b.dtsi       |   2 +-
> >  arch/riscv/boot/dts/sophgo/sg2042-cpus.dtsi   | 128 +++++++++---------
> >  arch/riscv/boot/dts/thead/th1520.dtsi         |   8 +-
> >  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              |  89 ++++++++++--
> >  drivers/perf/Kconfig                          |  27 ++++
> >  drivers/perf/riscv_pmu_sbi.c                  |  47 +++++--
> >  include/linux/soc/andes/irq.h                 |  18 +++
> >  .../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 +
> >  24 files changed, 592 insertions(+), 151 deletions(-)
> >  create mode 100644 include/linux/soc/andes/irq.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
> >
> >
> > _______________________________________________
> > linux-riscv mailing list
> > linux-riscv@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-riscv

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