1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
5 #include <rte_spinlock.h>
8 #include "power_acpi_cpufreq.h"
9 #include "power_kvm_vm.h"
10 #include "power_pstate_cpufreq.h"
11 #include "power_common.h"
13 enum power_management_env global_default_env = PM_ENV_NOT_SET;
15 static rte_spinlock_t global_env_cfg_lock = RTE_SPINLOCK_INITIALIZER;
17 /* function pointers */
18 rte_power_freqs_t rte_power_freqs = NULL;
19 rte_power_get_freq_t rte_power_get_freq = NULL;
20 rte_power_set_freq_t rte_power_set_freq = NULL;
21 rte_power_freq_change_t rte_power_freq_up = NULL;
22 rte_power_freq_change_t rte_power_freq_down = NULL;
23 rte_power_freq_change_t rte_power_freq_max = NULL;
24 rte_power_freq_change_t rte_power_freq_min = NULL;
25 rte_power_freq_change_t rte_power_turbo_status;
26 rte_power_freq_change_t rte_power_freq_enable_turbo;
27 rte_power_freq_change_t rte_power_freq_disable_turbo;
28 rte_power_get_capabilities_t rte_power_get_capabilities;
31 rte_power_set_env(enum power_management_env env)
33 rte_spinlock_lock(&global_env_cfg_lock);
35 if (global_default_env != PM_ENV_NOT_SET) {
36 rte_spinlock_unlock(&global_env_cfg_lock);
42 if (env == PM_ENV_ACPI_CPUFREQ) {
43 rte_power_freqs = power_acpi_cpufreq_freqs;
44 rte_power_get_freq = power_acpi_cpufreq_get_freq;
45 rte_power_set_freq = power_acpi_cpufreq_set_freq;
46 rte_power_freq_up = power_acpi_cpufreq_freq_up;
47 rte_power_freq_down = power_acpi_cpufreq_freq_down;
48 rte_power_freq_min = power_acpi_cpufreq_freq_min;
49 rte_power_freq_max = power_acpi_cpufreq_freq_max;
50 rte_power_turbo_status = power_acpi_turbo_status;
51 rte_power_freq_enable_turbo = power_acpi_enable_turbo;
52 rte_power_freq_disable_turbo = power_acpi_disable_turbo;
53 rte_power_get_capabilities = power_acpi_get_capabilities;
54 } else if (env == PM_ENV_KVM_VM) {
55 rte_power_freqs = power_kvm_vm_freqs;
56 rte_power_get_freq = power_kvm_vm_get_freq;
57 rte_power_set_freq = power_kvm_vm_set_freq;
58 rte_power_freq_up = power_kvm_vm_freq_up;
59 rte_power_freq_down = power_kvm_vm_freq_down;
60 rte_power_freq_min = power_kvm_vm_freq_min;
61 rte_power_freq_max = power_kvm_vm_freq_max;
62 rte_power_turbo_status = power_kvm_vm_turbo_status;
63 rte_power_freq_enable_turbo = power_kvm_vm_enable_turbo;
64 rte_power_freq_disable_turbo = power_kvm_vm_disable_turbo;
65 rte_power_get_capabilities = power_kvm_vm_get_capabilities;
66 } else if (env == PM_ENV_PSTATE_CPUFREQ) {
67 rte_power_freqs = power_pstate_cpufreq_freqs;
68 rte_power_get_freq = power_pstate_cpufreq_get_freq;
69 rte_power_set_freq = power_pstate_cpufreq_set_freq;
70 rte_power_freq_up = power_pstate_cpufreq_freq_up;
71 rte_power_freq_down = power_pstate_cpufreq_freq_down;
72 rte_power_freq_min = power_pstate_cpufreq_freq_min;
73 rte_power_freq_max = power_pstate_cpufreq_freq_max;
74 rte_power_turbo_status = power_pstate_turbo_status;
75 rte_power_freq_enable_turbo = power_pstate_enable_turbo;
76 rte_power_freq_disable_turbo = power_pstate_disable_turbo;
77 rte_power_get_capabilities = power_pstate_get_capabilities;
80 RTE_LOG(ERR, POWER, "Invalid Power Management Environment(%d) set\n",
86 global_default_env = env;
88 global_default_env = PM_ENV_NOT_SET;
90 rte_spinlock_unlock(&global_env_cfg_lock);
95 rte_power_unset_env(void)
97 rte_spinlock_lock(&global_env_cfg_lock);
98 global_default_env = PM_ENV_NOT_SET;
99 rte_spinlock_unlock(&global_env_cfg_lock);
102 enum power_management_env
103 rte_power_get_env(void) {
104 return global_default_env;
108 rte_power_init(unsigned int lcore_id)
112 switch (global_default_env) {
113 case PM_ENV_ACPI_CPUFREQ:
114 return power_acpi_cpufreq_init(lcore_id);
116 return power_kvm_vm_init(lcore_id);
117 case PM_ENV_PSTATE_CPUFREQ:
118 return power_pstate_cpufreq_init(lcore_id);
120 RTE_LOG(INFO, POWER, "Env isn't set yet!\n");
123 /* Auto detect Environment */
124 RTE_LOG(INFO, POWER, "Attempting to initialise ACPI cpufreq power management...\n");
125 ret = power_acpi_cpufreq_init(lcore_id);
127 rte_power_set_env(PM_ENV_ACPI_CPUFREQ);
131 RTE_LOG(INFO, POWER, "Attempting to initialise PSTAT power management...\n");
132 ret = power_pstate_cpufreq_init(lcore_id);
134 rte_power_set_env(PM_ENV_PSTATE_CPUFREQ);
138 RTE_LOG(INFO, POWER, "Attempting to initialise VM power management...\n");
139 ret = power_kvm_vm_init(lcore_id);
141 rte_power_set_env(PM_ENV_KVM_VM);
144 RTE_LOG(ERR, POWER, "Unable to set Power Management Environment for lcore "
151 rte_power_exit(unsigned int lcore_id)
153 switch (global_default_env) {
154 case PM_ENV_ACPI_CPUFREQ:
155 return power_acpi_cpufreq_exit(lcore_id);
157 return power_kvm_vm_exit(lcore_id);
158 case PM_ENV_PSTATE_CPUFREQ:
159 return power_pstate_cpufreq_exit(lcore_id);
161 RTE_LOG(ERR, POWER, "Environment has not been set, unable to exit gracefully\n");