[PATCH v5 08/15] lib: sbi: Use csr_read/write_num to read/update PMU counters

[Anup Patel]

On Sat, Jul 10, 2021 at 9:48 PM Atish Patra <atish.patra at wdc.com> wrote:
>
> Currently, csr_read/write_num functions are used to read/write PMP related
> CSRs where CSR value is decided at runtime. Expand this function to include
> PMU related CSRs as well.
>
> Reviewed-by: Anup Patel <anup.patel at wdc.com>
> Reviewed-by: Xiang W <wxjstz at 126.com>
> Signed-off-by: Atish Patra <atish.patra at wdc.com>

Applied this patch to the riscv/opensbi repo.

Thanks,
Anup

> ---
>  lib/sbi/riscv_asm.c | 35 +++++++++++++++++++++++++++++++++++
>  1 file changed, 35 insertions(+)
>
> diff --git a/lib/sbi/riscv_asm.c b/lib/sbi/riscv_asm.c
> index 8c54c11147e7..4c24a5132195 100644
> --- a/lib/sbi/riscv_asm.c
> +++ b/lib/sbi/riscv_asm.c
> @@ -118,6 +118,21 @@ unsigned long csr_read_num(int csr_num)
>         switch (csr_num) {
>         switchcase_csr_read_16(CSR_PMPCFG0, ret)
>         switchcase_csr_read_64(CSR_PMPADDR0, ret)
> +       switchcase_csr_read(CSR_MCYCLE, ret)
> +       switchcase_csr_read(CSR_MINSTRET, ret)
> +       switchcase_csr_read(CSR_MHPMCOUNTER3, ret)
> +       switchcase_csr_read_4(CSR_MHPMCOUNTER4, ret)
> +       switchcase_csr_read_8(CSR_MHPMCOUNTER8, ret)
> +       switchcase_csr_read_16(CSR_MHPMCOUNTER16, ret)
> +#if __riscv_xlen == 32
> +       switchcase_csr_read(CSR_MCYCLEH, ret)
> +       switchcase_csr_read(CSR_MINSTRETH, ret)
> +       switchcase_csr_read(CSR_MHPMCOUNTER3H, ret)
> +       switchcase_csr_read_4(CSR_MHPMCOUNTER4H, ret)
> +       switchcase_csr_read_8(CSR_MHPMCOUNTER8H, ret)
> +       switchcase_csr_read_16(CSR_MHPMCOUNTER16H, ret)
> +#endif
> +
>         default:
>                 break;
>         };
> @@ -161,6 +176,26 @@ void csr_write_num(int csr_num, unsigned long val)
>         switch (csr_num) {
>         switchcase_csr_write_16(CSR_PMPCFG0, val)
>         switchcase_csr_write_64(CSR_PMPADDR0, val)
> +       switchcase_csr_write(CSR_MCYCLE, val)
> +       switchcase_csr_write(CSR_MINSTRET, val)
> +       switchcase_csr_write(CSR_MHPMCOUNTER3, val)
> +       switchcase_csr_write_4(CSR_MHPMCOUNTER4, val)
> +       switchcase_csr_write_8(CSR_MHPMCOUNTER8, val)
> +       switchcase_csr_write_16(CSR_MHPMCOUNTER16, val)
> +#if __riscv_xlen == 32
> +       switchcase_csr_write(CSR_MCYCLEH, val)
> +       switchcase_csr_write(CSR_MINSTRETH, val)
> +       switchcase_csr_write(CSR_MHPMCOUNTER3H, val)
> +       switchcase_csr_write_4(CSR_MHPMCOUNTER4H, val)
> +       switchcase_csr_write_8(CSR_MHPMCOUNTER8H, val)
> +       switchcase_csr_write_16(CSR_MHPMCOUNTER16H, val)
> +#endif
> +       switchcase_csr_write(CSR_MCOUNTINHIBIT, val)
> +       switchcase_csr_write(CSR_MHPMEVENT3, val)
> +       switchcase_csr_write_4(CSR_MHPMEVENT4, val)
> +       switchcase_csr_write_8(CSR_MHPMEVENT8, val)
> +       switchcase_csr_write_16(CSR_MHPMEVENT16, val)
> +
>         default:
>                 break;
>         };
> --
> 2.31.1
>
>
> --
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