[PATCH 3/3] lib: sbi: pmu: Set a SSE register_cb() for event availability

[Atish Patra]

On Fri, Dec 6, 2024 at 1:00 PM Clément Léger <cleger at rivosinc.com> wrote:
>
> Since the SSE event can work only when the LCOFIP interrupt is available,
> check for the Sscofpmf extension to be available in the SSE register
> callback.
>
> Signed-off-by: Clément Léger <cleger at rivosinc.com>
> ---
>  lib/sbi/sbi_pmu.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/lib/sbi/sbi_pmu.c b/lib/sbi/sbi_pmu.c
> index 0696ab5e..0851abad 100644
> --- a/lib/sbi/sbi_pmu.c
> +++ b/lib/sbi/sbi_pmu.c
> @@ -1110,7 +1110,18 @@ static void pmu_sse_complete(uint32_t event_id)
>         csr_set(CSR_MIE, MIP_LCOFIP);
>  }
>
> +static int pmu_sse_register(uint32_t event_id)
> +{
> +       struct sbi_scratch *scratch = sbi_scratch_thishart_ptr();
> +
> +       if (!sbi_hart_has_extension(scratch, SBI_HART_EXT_SSCOFPMF))
> +               return SBI_ERR_FAILED;
> +
> +       return SBI_SUCCESS;
> +}
> +
>  static const struct sbi_sse_cb_ops pmu_sse_cb_ops = {
> +       .register_cb = pmu_sse_register,
>         .enable_cb = pmu_sse_enable,
>         .disable_cb = pmu_sse_disable,
>         .complete_cb = pmu_sse_complete,
> --
> 2.45.2
>
>
> --
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Reviewed-by: Atish Patra <atishp at rivosinc.com>

-- 
Regards,
Atish