rte_power_cpufreq.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2014 Intel Corporation
 * Copyright(c) 2024 Advanced Micro Devices, Inc.
 */
 
#ifndef RTE_POWER_CPUFREQ_H
#define RTE_POWER_CPUFREQ_H

 
#include <rte_common.h>
#include <rte_log.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/* Power Management Environment State */
enum power_management_env {
    PM_ENV_NOT_SET = 0,
    PM_ENV_ACPI_CPUFREQ,
    PM_ENV_KVM_VM,
    PM_ENV_PSTATE_CPUFREQ,
    PM_ENV_CPPC_CPUFREQ,
    PM_ENV_AMD_PSTATE_CPUFREQ
};

int rte_power_check_env_supported(enum power_management_env env);

int rte_power_set_env(enum power_management_env env);

void rte_power_unset_env(void);

enum power_management_env rte_power_get_env(void);

int rte_power_init(unsigned int lcore_id);

int rte_power_exit(unsigned int lcore_id);

uint32_t rte_power_freqs(unsigned int lcore_id, uint32_t *freqs, uint32_t num);

uint32_t rte_power_get_freq(unsigned int lcore_id);

uint32_t rte_power_set_freq(unsigned int lcore_id, uint32_t index);

int rte_power_freq_up(unsigned int lcore_id);

int rte_power_freq_down(unsigned int lcore_id);

int rte_power_freq_max(unsigned int lcore_id);

int rte_power_freq_min(unsigned int lcore_id);

int rte_power_turbo_status(unsigned int lcore_id);

int rte_power_freq_enable_turbo(unsigned int lcore_id);

int rte_power_freq_disable_turbo(unsigned int lcore_id);

struct rte_power_core_capabilities {
    union {
        uint64_t capabilities;
        struct {
            uint64_t turbo:1;       
            uint64_t priority:1;    
        };
    };
};

int rte_power_get_capabilities(unsigned int lcore_id,
        struct rte_power_core_capabilities *caps);
 
#ifdef __cplusplus
}
#endif
 
#endif /* RTE_POWER_CPUFREQ_H */