Hi Anup,
Am Dienstag, 12. Oktober 2021, 11:58:53 CEST schrieb Anup Patel:
> We add defines related to SBI HSM suspend call and also
> update HSM states naming as-per latest SBI specification.
>
> Signed-off-by: Anup Patel <anup.patel@xxxxxxx>
Looks like this patch depends on your SRST patch.
("RISC-V: Use SBI SRST extension when available").
Looking at the history this seems to have been last posted in june 2021
with the conversation stalling around july.
I guess as this was so long ago, that patch might've dropped out of
peoples inboxes and a resend might be in order?
Heiko
> ---
> arch/riscv/include/asm/sbi.h | 27 ++++++++++++++++++++++-----
> arch/riscv/kernel/cpu_ops_sbi.c | 2 +-
> 2 files changed, 23 insertions(+), 6 deletions(-)
>
> diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
> index 289621da4a2a..ab9782f8da52 100644
> --- a/arch/riscv/include/asm/sbi.h
> +++ b/arch/riscv/include/asm/sbi.h
> @@ -62,15 +62,32 @@ enum sbi_ext_hsm_fid {
> SBI_EXT_HSM_HART_START = 0,
> SBI_EXT_HSM_HART_STOP,
> SBI_EXT_HSM_HART_STATUS,
> + SBI_EXT_HSM_HART_SUSPEND,
> };
>
> -enum sbi_hsm_hart_status {
> - SBI_HSM_HART_STATUS_STARTED = 0,
> - SBI_HSM_HART_STATUS_STOPPED,
> - SBI_HSM_HART_STATUS_START_PENDING,
> - SBI_HSM_HART_STATUS_STOP_PENDING,
> +enum sbi_hsm_hart_state {
> + SBI_HSM_STATE_STARTED = 0,
> + SBI_HSM_STATE_STOPPED,
> + SBI_HSM_STATE_START_PENDING,
> + SBI_HSM_STATE_STOP_PENDING,
> + SBI_HSM_STATE_SUSPENDED,
> + SBI_HSM_STATE_SUSPEND_PENDING,
> + SBI_HSM_STATE_RESUME_PENDING,
> };
>
> +#define SBI_HSM_SUSP_BASE_MASK 0x7fffffff
> +#define SBI_HSM_SUSP_NON_RET_BIT 0x80000000
> +#define SBI_HSM_SUSP_PLAT_BASE 0x10000000
> +
> +#define SBI_HSM_SUSPEND_RET_DEFAULT 0x00000000
> +#define SBI_HSM_SUSPEND_RET_PLATFORM SBI_HSM_SUSP_PLAT_BASE
> +#define SBI_HSM_SUSPEND_RET_LAST SBI_HSM_SUSP_BASE_MASK
> +#define SBI_HSM_SUSPEND_NON_RET_DEFAULT SBI_HSM_SUSP_NON_RET_BIT
> +#define SBI_HSM_SUSPEND_NON_RET_PLATFORM (SBI_HSM_SUSP_NON_RET_BIT | \
> + SBI_HSM_SUSP_PLAT_BASE)
> +#define SBI_HSM_SUSPEND_NON_RET_LAST (SBI_HSM_SUSP_NON_RET_BIT | \
> + SBI_HSM_SUSP_BASE_MASK)
> +
> enum sbi_ext_srst_fid {
> SBI_EXT_SRST_RESET = 0,
> };
> diff --git a/arch/riscv/kernel/cpu_ops_sbi.c b/arch/riscv/kernel/cpu_ops_sbi.c
> index 685fae72b7f5..5fd90f03a3e9 100644
> --- a/arch/riscv/kernel/cpu_ops_sbi.c
> +++ b/arch/riscv/kernel/cpu_ops_sbi.c
> @@ -97,7 +97,7 @@ static int sbi_cpu_is_stopped(unsigned int cpuid)
>
> rc = sbi_hsm_hart_get_status(hartid);
>
> - if (rc == SBI_HSM_HART_STATUS_STOPPED)
> + if (rc == SBI_HSM_STATE_STOPPED)
> return 0;
> return rc;
> }
>
