1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
6 #include <rte_spinlock.h>
9 #include "power_acpi_cpufreq.h"
10 #include "power_cppc_cpufreq.h"
11 #include "power_kvm_vm.h"
12 #include "power_pstate_cpufreq.h"
13 #include "power_common.h"
15 enum power_management_env global_default_env = PM_ENV_NOT_SET;
17 static rte_spinlock_t global_env_cfg_lock = RTE_SPINLOCK_INITIALIZER;
19 /* function pointers */
20 rte_power_freqs_t rte_power_freqs = NULL;
21 rte_power_get_freq_t rte_power_get_freq = NULL;
22 rte_power_set_freq_t rte_power_set_freq = NULL;
23 rte_power_freq_change_t rte_power_freq_up = NULL;
24 rte_power_freq_change_t rte_power_freq_down = NULL;
25 rte_power_freq_change_t rte_power_freq_max = NULL;
26 rte_power_freq_change_t rte_power_freq_min = NULL;
27 rte_power_freq_change_t rte_power_turbo_status;
28 rte_power_freq_change_t rte_power_freq_enable_turbo;
29 rte_power_freq_change_t rte_power_freq_disable_turbo;
30 rte_power_get_capabilities_t rte_power_get_capabilities;
33 reset_power_function_ptrs(void)
35 rte_power_freqs = NULL;
36 rte_power_get_freq = NULL;
37 rte_power_set_freq = NULL;
38 rte_power_freq_up = NULL;
39 rte_power_freq_down = NULL;
40 rte_power_freq_max = NULL;
41 rte_power_freq_min = NULL;
42 rte_power_turbo_status = NULL;
43 rte_power_freq_enable_turbo = NULL;
44 rte_power_freq_disable_turbo = NULL;
45 rte_power_get_capabilities = NULL;
49 rte_power_check_env_supported(enum power_management_env env)
52 case PM_ENV_ACPI_CPUFREQ:
53 return power_acpi_cpufreq_check_supported();
54 case PM_ENV_PSTATE_CPUFREQ:
55 return power_pstate_cpufreq_check_supported();
57 return power_kvm_vm_check_supported();
58 case PM_ENV_CPPC_CPUFREQ:
59 return power_cppc_cpufreq_check_supported();
67 rte_power_set_env(enum power_management_env env)
69 rte_spinlock_lock(&global_env_cfg_lock);
71 if (global_default_env != PM_ENV_NOT_SET) {
72 RTE_LOG(ERR, POWER, "Power Management Environment already set.\n");
73 rte_spinlock_unlock(&global_env_cfg_lock);
79 if (env == PM_ENV_ACPI_CPUFREQ) {
80 rte_power_freqs = power_acpi_cpufreq_freqs;
81 rte_power_get_freq = power_acpi_cpufreq_get_freq;
82 rte_power_set_freq = power_acpi_cpufreq_set_freq;
83 rte_power_freq_up = power_acpi_cpufreq_freq_up;
84 rte_power_freq_down = power_acpi_cpufreq_freq_down;
85 rte_power_freq_min = power_acpi_cpufreq_freq_min;
86 rte_power_freq_max = power_acpi_cpufreq_freq_max;
87 rte_power_turbo_status = power_acpi_turbo_status;
88 rte_power_freq_enable_turbo = power_acpi_enable_turbo;
89 rte_power_freq_disable_turbo = power_acpi_disable_turbo;
90 rte_power_get_capabilities = power_acpi_get_capabilities;
91 } else if (env == PM_ENV_KVM_VM) {
92 rte_power_freqs = power_kvm_vm_freqs;
93 rte_power_get_freq = power_kvm_vm_get_freq;
94 rte_power_set_freq = power_kvm_vm_set_freq;
95 rte_power_freq_up = power_kvm_vm_freq_up;
96 rte_power_freq_down = power_kvm_vm_freq_down;
97 rte_power_freq_min = power_kvm_vm_freq_min;
98 rte_power_freq_max = power_kvm_vm_freq_max;
99 rte_power_turbo_status = power_kvm_vm_turbo_status;
100 rte_power_freq_enable_turbo = power_kvm_vm_enable_turbo;
101 rte_power_freq_disable_turbo = power_kvm_vm_disable_turbo;
102 rte_power_get_capabilities = power_kvm_vm_get_capabilities;
103 } else if (env == PM_ENV_PSTATE_CPUFREQ) {
104 rte_power_freqs = power_pstate_cpufreq_freqs;
105 rte_power_get_freq = power_pstate_cpufreq_get_freq;
106 rte_power_set_freq = power_pstate_cpufreq_set_freq;
107 rte_power_freq_up = power_pstate_cpufreq_freq_up;
108 rte_power_freq_down = power_pstate_cpufreq_freq_down;
109 rte_power_freq_min = power_pstate_cpufreq_freq_min;
110 rte_power_freq_max = power_pstate_cpufreq_freq_max;
111 rte_power_turbo_status = power_pstate_turbo_status;
112 rte_power_freq_enable_turbo = power_pstate_enable_turbo;
113 rte_power_freq_disable_turbo = power_pstate_disable_turbo;
114 rte_power_get_capabilities = power_pstate_get_capabilities;
116 } else if (env == PM_ENV_CPPC_CPUFREQ) {
117 rte_power_freqs = power_cppc_cpufreq_freqs;
118 rte_power_get_freq = power_cppc_cpufreq_get_freq;
119 rte_power_set_freq = power_cppc_cpufreq_set_freq;
120 rte_power_freq_up = power_cppc_cpufreq_freq_up;
121 rte_power_freq_down = power_cppc_cpufreq_freq_down;
122 rte_power_freq_min = power_cppc_cpufreq_freq_min;
123 rte_power_freq_max = power_cppc_cpufreq_freq_max;
124 rte_power_turbo_status = power_cppc_turbo_status;
125 rte_power_freq_enable_turbo = power_cppc_enable_turbo;
126 rte_power_freq_disable_turbo = power_cppc_disable_turbo;
127 rte_power_get_capabilities = power_cppc_get_capabilities;
129 RTE_LOG(ERR, POWER, "Invalid Power Management Environment(%d) set\n",
135 global_default_env = env;
137 global_default_env = PM_ENV_NOT_SET;
138 reset_power_function_ptrs();
141 rte_spinlock_unlock(&global_env_cfg_lock);
146 rte_power_unset_env(void)
148 rte_spinlock_lock(&global_env_cfg_lock);
149 global_default_env = PM_ENV_NOT_SET;
150 reset_power_function_ptrs();
151 rte_spinlock_unlock(&global_env_cfg_lock);
154 enum power_management_env
155 rte_power_get_env(void) {
156 return global_default_env;
160 rte_power_init(unsigned int lcore_id)
164 switch (global_default_env) {
165 case PM_ENV_ACPI_CPUFREQ:
166 return power_acpi_cpufreq_init(lcore_id);
168 return power_kvm_vm_init(lcore_id);
169 case PM_ENV_PSTATE_CPUFREQ:
170 return power_pstate_cpufreq_init(lcore_id);
171 case PM_ENV_CPPC_CPUFREQ:
172 return power_cppc_cpufreq_init(lcore_id);
174 RTE_LOG(INFO, POWER, "Env isn't set yet!\n");
177 /* Auto detect Environment */
178 RTE_LOG(INFO, POWER, "Attempting to initialise ACPI cpufreq power management...\n");
179 ret = power_acpi_cpufreq_init(lcore_id);
181 rte_power_set_env(PM_ENV_ACPI_CPUFREQ);
185 RTE_LOG(INFO, POWER, "Attempting to initialise PSTAT power management...\n");
186 ret = power_pstate_cpufreq_init(lcore_id);
188 rte_power_set_env(PM_ENV_PSTATE_CPUFREQ);
192 RTE_LOG(INFO, POWER, "Attempting to initialise CPPC power management...\n");
193 ret = power_cppc_cpufreq_init(lcore_id);
195 rte_power_set_env(PM_ENV_CPPC_CPUFREQ);
199 RTE_LOG(INFO, POWER, "Attempting to initialise VM power management...\n");
200 ret = power_kvm_vm_init(lcore_id);
202 rte_power_set_env(PM_ENV_KVM_VM);
205 RTE_LOG(ERR, POWER, "Unable to set Power Management Environment for lcore "
212 rte_power_exit(unsigned int lcore_id)
214 switch (global_default_env) {
215 case PM_ENV_ACPI_CPUFREQ:
216 return power_acpi_cpufreq_exit(lcore_id);
218 return power_kvm_vm_exit(lcore_id);
219 case PM_ENV_PSTATE_CPUFREQ:
220 return power_pstate_cpufreq_exit(lcore_id);
221 case PM_ENV_CPPC_CPUFREQ:
222 return power_cppc_cpufreq_exit(lcore_id);
224 RTE_LOG(ERR, POWER, "Environment has not been set, unable to exit gracefully\n");