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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include <rte_atomic.h>
#include "rte_power.h"
#include "power_acpi_cpufreq.h"
#include "power_kvm_vm.h"
#include "power_common.h"
enum power_management_env global_default_env = PM_ENV_NOT_SET;
volatile uint32_t global_env_cfg_status = 0;
/* function pointers */
rte_power_freqs_t rte_power_freqs = NULL;
rte_power_get_freq_t rte_power_get_freq = NULL;
rte_power_set_freq_t rte_power_set_freq = NULL;
rte_power_freq_change_t rte_power_freq_up = NULL;
rte_power_freq_change_t rte_power_freq_down = NULL;
rte_power_freq_change_t rte_power_freq_max = NULL;
rte_power_freq_change_t rte_power_freq_min = NULL;
rte_power_freq_change_t rte_power_turbo_status;
rte_power_freq_change_t rte_power_freq_enable_turbo;
rte_power_freq_change_t rte_power_freq_disable_turbo;
int
rte_power_set_env(enum power_management_env env)
{
if (rte_atomic32_cmpset(&global_env_cfg_status, 0, 1) == 0) {
return 0;
}
if (env == PM_ENV_ACPI_CPUFREQ) {
rte_power_freqs = power_acpi_cpufreq_freqs;
rte_power_get_freq = power_acpi_cpufreq_get_freq;
rte_power_set_freq = power_acpi_cpufreq_set_freq;
rte_power_freq_up = power_acpi_cpufreq_freq_up;
rte_power_freq_down = power_acpi_cpufreq_freq_down;
rte_power_freq_min = power_acpi_cpufreq_freq_min;
rte_power_freq_max = power_acpi_cpufreq_freq_max;
rte_power_turbo_status = power_acpi_turbo_status;
rte_power_freq_enable_turbo = power_acpi_enable_turbo;
rte_power_freq_disable_turbo = power_acpi_disable_turbo;
} else if (env == PM_ENV_KVM_VM) {
rte_power_freqs = power_kvm_vm_freqs;
rte_power_get_freq = power_kvm_vm_get_freq;
rte_power_set_freq = power_kvm_vm_set_freq;
rte_power_freq_up = power_kvm_vm_freq_up;
rte_power_freq_down = power_kvm_vm_freq_down;
rte_power_freq_min = power_kvm_vm_freq_min;
rte_power_freq_max = power_kvm_vm_freq_max;
rte_power_turbo_status = power_kvm_vm_turbo_status;
rte_power_freq_enable_turbo = power_kvm_vm_enable_turbo;
rte_power_freq_disable_turbo = power_kvm_vm_disable_turbo;
} else {
RTE_LOG(ERR, POWER, "Invalid Power Management Environment(%d) set\n",
env);
rte_power_unset_env();
return -1;
}
global_default_env = env;
return 0;
}
void
rte_power_unset_env(void)
{
if (rte_atomic32_cmpset(&global_env_cfg_status, 1, 0) != 0)
global_default_env = PM_ENV_NOT_SET;
}
enum power_management_env
rte_power_get_env(void) {
return global_default_env;
}
int
rte_power_init(unsigned int lcore_id)
{
int ret = -1;
if (global_default_env == PM_ENV_ACPI_CPUFREQ) {
return power_acpi_cpufreq_init(lcore_id);
}
if (global_default_env == PM_ENV_KVM_VM) {
return power_kvm_vm_init(lcore_id);
}
/* Auto detect Environment */
RTE_LOG(INFO, POWER, "Attempting to initialise ACPI cpufreq power "
"management...\n");
ret = power_acpi_cpufreq_init(lcore_id);
if (ret == 0) {
rte_power_set_env(PM_ENV_ACPI_CPUFREQ);
goto out;
}
RTE_LOG(INFO, POWER, "Attempting to initialise VM power management...\n");
ret = power_kvm_vm_init(lcore_id);
if (ret == 0) {
rte_power_set_env(PM_ENV_KVM_VM);
goto out;
}
RTE_LOG(ERR, POWER, "Unable to set Power Management Environment for lcore "
"%u\n", lcore_id);
out:
return ret;
}
int
rte_power_exit(unsigned int lcore_id)
{
if (global_default_env == PM_ENV_ACPI_CPUFREQ)
return power_acpi_cpufreq_exit(lcore_id);
if (global_default_env == PM_ENV_KVM_VM)
return power_kvm_vm_exit(lcore_id);
RTE_LOG(ERR, POWER, "Environment has not been set, unable to exit "
"gracefully\n");
return -1;
}
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