1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
5 #include <rte_atomic.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 volatile uint32_t global_env_cfg_status = 0;
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 if (rte_atomic32_cmpset(&global_env_cfg_status, 0, 1) == 0) {
36 if (env == PM_ENV_ACPI_CPUFREQ) {
37 rte_power_freqs = power_acpi_cpufreq_freqs;
38 rte_power_get_freq = power_acpi_cpufreq_get_freq;
39 rte_power_set_freq = power_acpi_cpufreq_set_freq;
40 rte_power_freq_up = power_acpi_cpufreq_freq_up;
41 rte_power_freq_down = power_acpi_cpufreq_freq_down;
42 rte_power_freq_min = power_acpi_cpufreq_freq_min;
43 rte_power_freq_max = power_acpi_cpufreq_freq_max;
44 rte_power_turbo_status = power_acpi_turbo_status;
45 rte_power_freq_enable_turbo = power_acpi_enable_turbo;
46 rte_power_freq_disable_turbo = power_acpi_disable_turbo;
47 rte_power_get_capabilities = power_acpi_get_capabilities;
48 } else if (env == PM_ENV_KVM_VM) {
49 rte_power_freqs = power_kvm_vm_freqs;
50 rte_power_get_freq = power_kvm_vm_get_freq;
51 rte_power_set_freq = power_kvm_vm_set_freq;
52 rte_power_freq_up = power_kvm_vm_freq_up;
53 rte_power_freq_down = power_kvm_vm_freq_down;
54 rte_power_freq_min = power_kvm_vm_freq_min;
55 rte_power_freq_max = power_kvm_vm_freq_max;
56 rte_power_turbo_status = power_kvm_vm_turbo_status;
57 rte_power_freq_enable_turbo = power_kvm_vm_enable_turbo;
58 rte_power_freq_disable_turbo = power_kvm_vm_disable_turbo;
59 rte_power_get_capabilities = power_kvm_vm_get_capabilities;
60 } else if (env == PM_ENV_PSTATE_CPUFREQ) {
61 rte_power_freqs = power_pstate_cpufreq_freqs;
62 rte_power_get_freq = power_pstate_cpufreq_get_freq;
63 rte_power_set_freq = power_pstate_cpufreq_set_freq;
64 rte_power_freq_up = power_pstate_cpufreq_freq_up;
65 rte_power_freq_down = power_pstate_cpufreq_freq_down;
66 rte_power_freq_min = power_pstate_cpufreq_freq_min;
67 rte_power_freq_max = power_pstate_cpufreq_freq_max;
68 rte_power_turbo_status = power_pstate_turbo_status;
69 rte_power_freq_enable_turbo = power_pstate_enable_turbo;
70 rte_power_freq_disable_turbo = power_pstate_disable_turbo;
71 rte_power_get_capabilities = power_pstate_get_capabilities;
74 RTE_LOG(ERR, POWER, "Invalid Power Management Environment(%d) set\n",
76 rte_power_unset_env();
79 global_default_env = env;
84 rte_power_unset_env(void)
86 if (rte_atomic32_cmpset(&global_env_cfg_status, 1, 0) != 0)
87 global_default_env = PM_ENV_NOT_SET;
90 enum power_management_env
91 rte_power_get_env(void) {
92 return global_default_env;
96 rte_power_init(unsigned int lcore_id)
100 switch (global_default_env) {
101 case PM_ENV_ACPI_CPUFREQ:
102 return power_acpi_cpufreq_init(lcore_id);
104 return power_kvm_vm_init(lcore_id);
105 case PM_ENV_PSTATE_CPUFREQ:
106 return power_pstate_cpufreq_init(lcore_id);
108 RTE_LOG(INFO, POWER, "Env isn't set yet!\n");
111 /* Auto detect Environment */
112 RTE_LOG(INFO, POWER, "Attempting to initialise ACPI cpufreq power management...\n");
113 ret = power_acpi_cpufreq_init(lcore_id);
115 rte_power_set_env(PM_ENV_ACPI_CPUFREQ);
119 RTE_LOG(INFO, POWER, "Attempting to initialise PSTAT power management...\n");
120 ret = power_pstate_cpufreq_init(lcore_id);
122 rte_power_set_env(PM_ENV_PSTATE_CPUFREQ);
126 RTE_LOG(INFO, POWER, "Attempting to initialise VM power management...\n");
127 ret = power_kvm_vm_init(lcore_id);
129 rte_power_set_env(PM_ENV_KVM_VM);
132 RTE_LOG(ERR, POWER, "Unable to set Power Management Environment for lcore "
139 rte_power_exit(unsigned int lcore_id)
141 switch (global_default_env) {
142 case PM_ENV_ACPI_CPUFREQ:
143 return power_acpi_cpufreq_exit(lcore_id);
145 return power_kvm_vm_exit(lcore_id);
146 case PM_ENV_PSTATE_CPUFREQ:
147 return power_pstate_cpufreq_exit(lcore_id);
149 RTE_LOG(ERR, POWER, "Environment has not been set, unable to exit gracefully\n");