369991d997
Replace the BSD license header with the SPDX tag for files with only an Intel copyright on them. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
124 lines
3.6 KiB
C
124 lines
3.6 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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#include <rte_atomic.h>
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#include "rte_power.h"
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#include "rte_power_acpi_cpufreq.h"
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#include "rte_power_kvm_vm.h"
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#include "rte_power_common.h"
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enum power_management_env global_default_env = PM_ENV_NOT_SET;
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volatile uint32_t global_env_cfg_status = 0;
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/* function pointers */
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rte_power_freqs_t rte_power_freqs = NULL;
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rte_power_get_freq_t rte_power_get_freq = NULL;
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rte_power_set_freq_t rte_power_set_freq = NULL;
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rte_power_freq_change_t rte_power_freq_up = NULL;
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rte_power_freq_change_t rte_power_freq_down = NULL;
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rte_power_freq_change_t rte_power_freq_max = NULL;
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rte_power_freq_change_t rte_power_freq_min = NULL;
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rte_power_freq_change_t rte_power_turbo_status;
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rte_power_freq_change_t rte_power_freq_enable_turbo;
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rte_power_freq_change_t rte_power_freq_disable_turbo;
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int
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rte_power_set_env(enum power_management_env env)
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{
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if (rte_atomic32_cmpset(&global_env_cfg_status, 0, 1) == 0) {
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return 0;
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}
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if (env == PM_ENV_ACPI_CPUFREQ) {
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rte_power_freqs = rte_power_acpi_cpufreq_freqs;
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rte_power_get_freq = rte_power_acpi_cpufreq_get_freq;
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rte_power_set_freq = rte_power_acpi_cpufreq_set_freq;
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rte_power_freq_up = rte_power_acpi_cpufreq_freq_up;
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rte_power_freq_down = rte_power_acpi_cpufreq_freq_down;
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rte_power_freq_min = rte_power_acpi_cpufreq_freq_min;
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rte_power_freq_max = rte_power_acpi_cpufreq_freq_max;
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rte_power_turbo_status = rte_power_acpi_turbo_status;
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rte_power_freq_enable_turbo = rte_power_acpi_enable_turbo;
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rte_power_freq_disable_turbo = rte_power_acpi_disable_turbo;
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} else if (env == PM_ENV_KVM_VM) {
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rte_power_freqs = rte_power_kvm_vm_freqs;
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rte_power_get_freq = rte_power_kvm_vm_get_freq;
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rte_power_set_freq = rte_power_kvm_vm_set_freq;
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rte_power_freq_up = rte_power_kvm_vm_freq_up;
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rte_power_freq_down = rte_power_kvm_vm_freq_down;
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rte_power_freq_min = rte_power_kvm_vm_freq_min;
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rte_power_freq_max = rte_power_kvm_vm_freq_max;
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rte_power_turbo_status = rte_power_kvm_vm_turbo_status;
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rte_power_freq_enable_turbo = rte_power_kvm_vm_enable_turbo;
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rte_power_freq_disable_turbo = rte_power_kvm_vm_disable_turbo;
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} else {
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RTE_LOG(ERR, POWER, "Invalid Power Management Environment(%d) set\n",
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env);
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rte_power_unset_env();
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return -1;
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}
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global_default_env = env;
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return 0;
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}
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void
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rte_power_unset_env(void)
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{
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if (rte_atomic32_cmpset(&global_env_cfg_status, 1, 0) != 0)
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global_default_env = PM_ENV_NOT_SET;
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}
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enum power_management_env
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rte_power_get_env(void) {
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return global_default_env;
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}
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int
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rte_power_init(unsigned lcore_id)
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{
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int ret = -1;
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if (global_default_env == PM_ENV_ACPI_CPUFREQ) {
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return rte_power_acpi_cpufreq_init(lcore_id);
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}
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if (global_default_env == PM_ENV_KVM_VM) {
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return rte_power_kvm_vm_init(lcore_id);
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}
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/* Auto detect Environment */
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RTE_LOG(INFO, POWER, "Attempting to initialise ACPI cpufreq power "
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"management...\n");
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ret = rte_power_acpi_cpufreq_init(lcore_id);
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if (ret == 0) {
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rte_power_set_env(PM_ENV_ACPI_CPUFREQ);
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goto out;
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}
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RTE_LOG(INFO, POWER, "Attempting to initialise VM power management...\n");
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ret = rte_power_kvm_vm_init(lcore_id);
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if (ret == 0) {
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rte_power_set_env(PM_ENV_KVM_VM);
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goto out;
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}
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RTE_LOG(ERR, POWER, "Unable to set Power Management Environment for lcore "
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"%u\n", lcore_id);
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out:
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return ret;
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}
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int
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rte_power_exit(unsigned lcore_id)
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{
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if (global_default_env == PM_ENV_ACPI_CPUFREQ)
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return rte_power_acpi_cpufreq_exit(lcore_id);
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if (global_default_env == PM_ENV_KVM_VM)
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return rte_power_kvm_vm_exit(lcore_id);
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RTE_LOG(ERR, POWER, "Environment has not been set, unable to exit "
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"gracefully\n");
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return -1;
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}
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