[RFC PATCH v1 1/4] include: Add defines for SBI CPPC extension

[Andrew Jones]

On Tue, Mar 21, 2023 at 09:50:51AM +0530, Sunil V L wrote:
> Add SBI CPPC extension related defines to the
> SBI ecall interface header.
> 
> Signed-off-by: Sunil V L <sunilvl at ventanamicro.com>
> ---
>  include/sbi/sbi_ecall_interface.h | 34 +++++++++++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
> 
> diff --git a/include/sbi/sbi_ecall_interface.h b/include/sbi/sbi_ecall_interface.h
> index 4597358..3b0f3ab 100644
> --- a/include/sbi/sbi_ecall_interface.h
> +++ b/include/sbi/sbi_ecall_interface.h
> @@ -31,6 +31,7 @@
>  #define SBI_EXT_PMU				0x504D55
>  #define SBI_EXT_DBCN				0x4442434E
>  #define SBI_EXT_SUSP				0x53555350
> +#define SBI_EXT_CPPC				0x43505043
>  
>  /* SBI function IDs for BASE extension*/
>  #define SBI_EXT_BASE_GET_SPEC_VERSION		0x0
> @@ -256,6 +257,39 @@ enum sbi_pmu_ctr_type {
>  #define SBI_SUSP_SLEEP_TYPE_LAST		SBI_SUSP_SLEEP_TYPE_SUSPEND
>  #define SBI_SUSP_PLATFORM_SLEEP_START		0x80000000
>  
> +/* SBI function IDs for CPPC extension */
> +#define SBI_EXT_CPPC_PROBE			0x0
> +#define SBI_EXT_CPPC_READ			0x1
> +#define SBI_EXT_CPPC_READ_HI			0x2
> +#define SBI_EXT_CPPC_WRITE			0x3
> +
> +enum sbi_cppc_reg_id {
> +	SBI_CPPC_HIGHEST_PERF		= 0x00000000,
> +	SBI_CPPC_NOMINAL_PERF		= 0x00000001,
> +	SBI_CPPC_LOW_NON_LINEAR_PERF	= 0x00000002,
> +	SBI_CPPC_LOWEST_PERF		= 0x00000003,
> +	SBI_CPPC_GUARANTEED_PERF	= 0x00000004,
> +	SBI_CPPC_DESIRED_PERF		= 0x00000005,
> +	SBI_CPPC_MIN_PERF		= 0x00000006,
> +	SBI_CPPC_MAX_PERF		= 0x00000007,
> +	SBI_CPPC_PERF_REDUC_TOLERANCE	= 0x00000008,
> +	SBI_CPPC_TIME_WINDOW		= 0x00000009,
> +	SBI_CPPC_CTR_WRAP_TIME		= 0x0000000A,
> +	SBI_CPPC_REFERENCE_CTR		= 0x0000000B,
> +	SBI_CPPC_DELIVERED_CTR		= 0x0000000C,
> +	SBI_CPPC_PERF_LIMITED		= 0x0000000D,
> +	SBI_CPPC_ENABLE			= 0x0000000E,
> +	SBI_CPPC_AUTO_SEL_ENABLE	= 0x0000000F,
> +	SBI_CPPC_AUTO_ACT_WINDOW	= 0x00000010,
> +	SBI_CPPC_ENERGY_PERF		= 0x00000011,

SBI_CPPC_ENERGY_PERF_PREFERENCE

> +	SBI_CPPC_REFERENCE_PERF		= 0x00000012,
> +	SBI_CPPC_LOWEST_FREQ		= 0x00000013,
> +	SBI_CPPC_NOMINAL_FREQ		= 0x00000014,
> +	SBI_CPPC_ACPI_LAST		= SBI_CPPC_NOMINAL_FREQ,
> +	SBI_CPPC_TRANSITION_LATENCY	= 0x80000000,
> +	SBI_CPPC_NON_ACPI_LAST		= SBI_CPPC_TRANSITION_LATENCY,
> +};
> +
>  /* SBI base specification related macros */
>  #define SBI_SPEC_VERSION_MAJOR_OFFSET		24
>  #define SBI_SPEC_VERSION_MAJOR_MASK		0x7f
> -- 
> 2.34.1
>

Otherwise

Reviewed-by: Andrew Jones <ajones at ventanamicro.com>

Thanks,
drew