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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#ifndef _POWER_KVM_VM_H
#define _POWER_KVM_VM_H
/**
* @file
* RTE Power Management KVM VM
*/
#include <rte_common.h>
#include <rte_byteorder.h>
#include <rte_log.h>
#include <rte_string_fns.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* Initialize power management for a specific lcore.
*
* @param lcore_id
* lcore id.
*
* @return
* - 0 on success.
* - Negative on error.
*/
int power_kvm_vm_init(unsigned int lcore_id);
/**
* Exit power management on a specific lcore.
*
* @param lcore_id
* lcore id.
*
* @return
* - 0 on success.
* - Negative on error.
*/
int power_kvm_vm_exit(unsigned int lcore_id);
/**
* Get the available frequencies of a specific lcore.
* It is not currently supported for VM Power Management.
*
* @param lcore_id
* lcore id.
* @param freqs
* The buffer array to save the frequencies.
* @param num
* The number of frequencies to get.
*
* @return
* -ENOTSUP
*/
uint32_t power_kvm_vm_freqs(unsigned int lcore_id, uint32_t *freqs,
uint32_t num);
/**
* Return the current index of available frequencies of a specific lcore.
* It is not currently supported for VM Power Management.
*
* @param lcore_id
* lcore id.
*
* @return
* -ENOTSUP
*/
uint32_t power_kvm_vm_get_freq(unsigned int lcore_id);
/**
* Set the new frequency for a specific lcore by indicating the index of
* available frequencies.
* It is not currently supported for VM Power Management.
*
* @param lcore_id
* lcore id.
* @param index
* The index of available frequencies.
*
* @return
* -ENOTSUP
*/
int power_kvm_vm_set_freq(unsigned int lcore_id, uint32_t index);
/**
* Scale up the frequency of a specific lcore. This request is forwarded to the
* host monitor.
* It should be protected outside of this function for threadsafe.
*
* @param lcore_id
* lcore id.
*
* @return
* - 1 on success.
* - Negative on error.
*/
int power_kvm_vm_freq_up(unsigned int lcore_id);
/**
* Scale down the frequency of a specific lcore according to the available
* frequencies.
* It should be protected outside of this function for threadsafe.
*
* @param lcore_id
* lcore id.
*
* @return
* - 1 on success.
* - Negative on error.
*/
int power_kvm_vm_freq_down(unsigned int lcore_id);
/**
* Scale up the frequency of a specific lcore to the highest according to the
* available frequencies.
* It should be protected outside of this function for threadsafe.
*
* @param lcore_id
* lcore id.
*
* @return
* - 1 on success.
* - Negative on error.
*/
int power_kvm_vm_freq_max(unsigned int lcore_id);
/**
* Scale down the frequency of a specific lcore to the lowest according to the
* available frequencies.
* It should be protected outside of this function for threadsafe.
*
* @param lcore_id
* lcore id.
*
* @return
* - 1 on success.
* - Negative on error.
*/
int power_kvm_vm_freq_min(unsigned int lcore_id);
/**
* It should be protected outside of this function for threadsafe.
*
* @param lcore_id
* lcore id.
*
* @return
* -ENOTSUP
*/
int power_kvm_vm_turbo_status(unsigned int lcore_id);
/**
* It should be protected outside of this function for threadsafe.
*
* @param lcore_id
* lcore id.
*
* @return
* - 1 on success.
* - Negative on error.
*/
int power_kvm_vm_enable_turbo(unsigned int lcore_id);
/**
* It should be protected outside of this function for threadsafe.
*
* @param lcore_id
* lcore id.
*
* @return
* - 1 on success.
* - Negative on error.
*/
int power_kvm_vm_disable_turbo(unsigned int lcore_id);
#ifdef __cplusplus
}
#endif
#endif
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