On Mon, Aug 28, 2023 at 12:29 PM Inochi Amaoto <inochiama@xxxxxxxxxxx> wrote: > > D1 has several pmu events supported by opensbi. > These events can be used by perf for profiling. > > Signed-off-by: Inochi Amaoto <inochiama@xxxxxxxxxxx> > Link: https://dl.linux-sunxi.org/D1/Xuantie_C906_R1S0_User_Manual.pdf > Link: https://github.com/T-head-Semi/openc906/blob/main/C906_RTL_FACTORY/gen_rtl/pmu/rtl/aq_hpcp_top.v#L657 > --- > changed from v3: > 1. remove wrong event mapping of 0x0000a > 2. add reference url of c906 events implementation (D1 only support events > described in R1S0 user manual, but event mapping is the same) > > changed from v2: > 1. move pmu node from /soc to / to avoid warnings when checking. > > The meaning of T-HEAD events can be found in this pending patch: > https://lore.kernel.org/linux-perf-users/IA1PR20MB4953DD82D0116EC291C21777BBE2A@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx > > The patch above also provides a example that shows how to setup > environment and use perf with T-HEAD events. > --- > arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi | 39 +++++++++++++++++++ > 1 file changed, 39 insertions(+) > > diff --git a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi > index 8275630af977..53a984d78e3f 100644 > --- a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi > +++ b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi > @@ -73,4 +73,43 @@ plic: interrupt-controller@10000000 { > #interrupt-cells = <2>; > }; > }; > + > + pmu { > + compatible = "riscv,pmu"; > + riscv,event-to-mhpmcounters = > + <0x00003 0x00003 0x00000008>, > + <0x00004 0x00004 0x00000010>, > + <0x00005 0x00005 0x00000200>, > + <0x00006 0x00006 0x00000100>, > + <0x10000 0x10000 0x00004000>, > + <0x10001 0x10001 0x00008000>, > + <0x10002 0x10002 0x00010000>, > + <0x10003 0x10003 0x00020000>, > + <0x10019 0x10019 0x00000040>, > + <0x10021 0x10021 0x00000020>; > + riscv,event-to-mhpmevent = > + <0x00003 0x00000000 0x00000001>, > + <0x00004 0x00000000 0x00000002>, > + <0x00005 0x00000000 0x00000007>, > + <0x00006 0x00000000 0x00000006>, > + <0x10000 0x00000000 0x0000000c>, > + <0x10001 0x00000000 0x0000000d>, > + <0x10002 0x00000000 0x0000000e>, > + <0x10003 0x00000000 0x0000000f>, > + <0x10019 0x00000000 0x00000004>, > + <0x10021 0x00000000 0x00000003>; > + riscv,raw-event-to-mhpmcounters = > + <0x00000000 0x00000001 0xffffffff 0xffffffff 0x00000008>, > + <0x00000000 0x00000002 0xffffffff 0xffffffff 0x00000010>, > + <0x00000000 0x00000003 0xffffffff 0xffffffff 0x00000020>, > + <0x00000000 0x00000004 0xffffffff 0xffffffff 0x00000040>, > + <0x00000000 0x00000005 0xffffffff 0xffffffff 0x00000080>, > + <0x00000000 0x00000006 0xffffffff 0xffffffff 0x00000100>, > + <0x00000000 0x00000007 0xffffffff 0xffffffff 0x00000200>, > + <0x00000000 0x0000000b 0xffffffff 0xffffffff 0x00002000>, > + <0x00000000 0x0000000c 0xffffffff 0xffffffff 0x00004000>, > + <0x00000000 0x0000000d 0xffffffff 0xffffffff 0x00008000>, > + <0x00000000 0x0000000e 0xffffffff 0xffffffff 0x00010000>, > + <0x00000000 0x0000000f 0xffffffff 0xffffffff 0x00020000>; > + }; > }; > -- > 2.42.0 > Reviewed-by: Guo Ren <guoren@xxxxxxxxxx> -- Best Regards Guo Ren
