185109906b
New API added, rte_power_get_capabilities(), that allows the application to query the power and performance capabilities of the CPU cores. Signed-off-by: Radu Nicolau <radu.nicolau@intel.com> Acked-by: David Hunt <david.hunt@intel.com>
201 lines
3.9 KiB
C
201 lines
3.9 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#ifndef _POWER_KVM_VM_H
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#define _POWER_KVM_VM_H
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/**
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* @file
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* RTE Power Management KVM VM
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*/
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#include <rte_common.h>
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#include <rte_byteorder.h>
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#include <rte_log.h>
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#include <rte_string_fns.h>
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#include "rte_power.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Initialize power management for a specific lcore.
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*
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* @param lcore_id
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* lcore id.
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*
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* @return
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* - 0 on success.
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* - Negative on error.
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*/
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int power_kvm_vm_init(unsigned int lcore_id);
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/**
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* Exit power management on a specific lcore.
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*
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* @param lcore_id
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* lcore id.
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*
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* @return
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* - 0 on success.
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* - Negative on error.
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*/
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int power_kvm_vm_exit(unsigned int lcore_id);
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/**
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* Get the available frequencies of a specific lcore.
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* It is not currently supported for VM Power Management.
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*
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* @param lcore_id
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* lcore id.
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* @param freqs
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* The buffer array to save the frequencies.
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* @param num
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* The number of frequencies to get.
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*
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* @return
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* -ENOTSUP
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*/
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uint32_t power_kvm_vm_freqs(unsigned int lcore_id, uint32_t *freqs,
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uint32_t num);
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/**
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* Return the current index of available frequencies of a specific lcore.
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* It is not currently supported for VM Power Management.
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*
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* @param lcore_id
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* lcore id.
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*
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* @return
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* -ENOTSUP
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*/
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uint32_t power_kvm_vm_get_freq(unsigned int lcore_id);
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/**
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* Set the new frequency for a specific lcore by indicating the index of
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* available frequencies.
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* It is not currently supported for VM Power Management.
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*
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* @param lcore_id
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* lcore id.
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* @param index
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* The index of available frequencies.
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*
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* @return
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* -ENOTSUP
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*/
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int power_kvm_vm_set_freq(unsigned int lcore_id, uint32_t index);
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/**
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* Scale up the frequency of a specific lcore. This request is forwarded to the
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* host monitor.
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* It should be protected outside of this function for threadsafe.
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*
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* @param lcore_id
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* lcore id.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_kvm_vm_freq_up(unsigned int lcore_id);
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/**
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* Scale down the frequency of a specific lcore according to the available
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* frequencies.
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* It should be protected outside of this function for threadsafe.
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*
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* @param lcore_id
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* lcore id.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_kvm_vm_freq_down(unsigned int lcore_id);
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/**
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* Scale up the frequency of a specific lcore to the highest according to the
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* available frequencies.
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* It should be protected outside of this function for threadsafe.
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*
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* @param lcore_id
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* lcore id.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_kvm_vm_freq_max(unsigned int lcore_id);
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/**
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* Scale down the frequency of a specific lcore to the lowest according to the
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* available frequencies.
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* It should be protected outside of this function for threadsafe.
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*
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* @param lcore_id
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* lcore id.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_kvm_vm_freq_min(unsigned int lcore_id);
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/**
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* It should be protected outside of this function for threadsafe.
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*
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* @param lcore_id
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* lcore id.
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*
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* @return
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* -ENOTSUP
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*/
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int power_kvm_vm_turbo_status(unsigned int lcore_id);
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/**
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* It should be protected outside of this function for threadsafe.
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*
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* @param lcore_id
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* lcore id.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_kvm_vm_enable_turbo(unsigned int lcore_id);
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/**
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* It should be protected outside of this function for threadsafe.
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*
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* @param lcore_id
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* lcore id.
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*
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* @return
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* - 1 on success.
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* - Negative on error.
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*/
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int power_kvm_vm_disable_turbo(unsigned int lcore_id);
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/**
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* Returns power capabilities for a specific lcore.
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*
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* @param lcore_id
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* lcore id.
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* @param caps
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* pointer to rte_power_core_capabilities object.
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*
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* @return
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* - 0 on success.
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* - Negative on error.
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*/
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int power_kvm_vm_get_capabilities(unsigned int lcore_id,
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struct rte_power_core_capabilities *caps);
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#ifdef __cplusplus
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}
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#endif
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#endif
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