[kvm-unit-tests PATCH v2 2/4] riscv: sbi: Add IPI extension support

[Andrew Jones]

On Mon, Aug 26, 2024 at 01:08:22AM GMT, James Raphael Tiovalen wrote:
> Add IPI EID and FID constants and a helper function to perform the IPI
> SBI ecall.
> 
> Signed-off-by: James Raphael Tiovalen <jamestiotio at gmail.com>
> ---
>  lib/riscv/asm/sbi.h | 6 ++++++
>  lib/riscv/sbi.c     | 5 +++++
>  2 files changed, 11 insertions(+)
> 
> diff --git a/lib/riscv/asm/sbi.h b/lib/riscv/asm/sbi.h
> index 47e91025..a864e268 100644
> --- a/lib/riscv/asm/sbi.h
> +++ b/lib/riscv/asm/sbi.h
> @@ -17,6 +17,7 @@
>  enum sbi_ext_id {
>  	SBI_EXT_BASE = 0x10,
>  	SBI_EXT_TIME = 0x54494d45,
> +	SBI_EXT_IPI = 0x735049,
>  	SBI_EXT_HSM = 0x48534d,
>  	SBI_EXT_SRST = 0x53525354,
>  	SBI_EXT_DBCN = 0x4442434E,
> @@ -43,6 +44,10 @@ enum sbi_ext_time_fid {
>  	SBI_EXT_TIME_SET_TIMER = 0,
>  };
>  
> +enum sbi_ext_ipi_fid {
> +	SBI_EXT_IPI_SEND_IPI = 0,
> +};
> +
>  enum sbi_ext_dbcn_fid {
>  	SBI_EXT_DBCN_CONSOLE_WRITE = 0,
>  	SBI_EXT_DBCN_CONSOLE_READ,
> @@ -61,6 +66,7 @@ struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
>  
>  void sbi_shutdown(void);
>  struct sbiret sbi_hart_start(unsigned long hartid, unsigned long entry, unsigned long sp);
> +struct sbiret sbi_send_ipi(unsigned long hart_mask, unsigned long hart_mask_base);
>  long sbi_probe(int ext);
>  
>  #endif /* !__ASSEMBLY__ */
> diff --git a/lib/riscv/sbi.c b/lib/riscv/sbi.c
> index 3d4236e5..19d58ab7 100644
> --- a/lib/riscv/sbi.c
> +++ b/lib/riscv/sbi.c
> @@ -39,6 +39,11 @@ struct sbiret sbi_hart_start(unsigned long hartid, unsigned long entry, unsigned
>  	return sbi_ecall(SBI_EXT_HSM, SBI_EXT_HSM_HART_START, hartid, entry, sp, 0, 0, 0);
>  }
>  
> +struct sbiret sbi_send_ipi(unsigned long hart_mask, unsigned long hart_mask_base)
> +{
> +	return sbi_ecall(SBI_EXT_IPI, SBI_EXT_IPI_SEND_IPI, hart_mask, hart_mask_base, 0, 0, 0, 0);
> +}
> +
>  long sbi_probe(int ext)
>  {
>  	struct sbiret ret;
> -- 
> 2.43.0
> 
>

Queued to riscv/sbi, https://gitlab.com/jones-drew/kvm-unit-tests/-/commits/riscv/sbi

Thanks,
drew