diff options
Diffstat (limited to 'src/dpdk_lib18/librte_power/rte_power.c')
| -rwxr-xr-x | src/dpdk_lib18/librte_power/rte_power.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/src/dpdk_lib18/librte_power/rte_power.c b/src/dpdk_lib18/librte_power/rte_power.c new file mode 100755 index 00000000..998ed1c9 --- /dev/null +++ b/src/dpdk_lib18/librte_power/rte_power.c @@ -0,0 +1,143 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <rte_atomic.h> + +#include "rte_power.h" +#include "rte_power_acpi_cpufreq.h" +#include "rte_power_kvm_vm.h" +#include "rte_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; + +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 = rte_power_acpi_cpufreq_freqs; + rte_power_get_freq = rte_power_acpi_cpufreq_get_freq; + rte_power_set_freq = rte_power_acpi_cpufreq_set_freq; + rte_power_freq_up = rte_power_acpi_cpufreq_freq_up; + rte_power_freq_down = rte_power_acpi_cpufreq_freq_down; + rte_power_freq_min = rte_power_acpi_cpufreq_freq_min; + rte_power_freq_max = rte_power_acpi_cpufreq_freq_max; + } else if (env == PM_ENV_KVM_VM) { + rte_power_freqs = rte_power_kvm_vm_freqs; + rte_power_get_freq = rte_power_kvm_vm_get_freq; + rte_power_set_freq = rte_power_kvm_vm_set_freq; + rte_power_freq_up = rte_power_kvm_vm_freq_up; + rte_power_freq_down = rte_power_kvm_vm_freq_down; + rte_power_freq_min = rte_power_kvm_vm_freq_min; + rte_power_freq_max = rte_power_kvm_vm_freq_max; + } 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 lcore_id) +{ + int ret = -1; + + if (global_default_env == PM_ENV_ACPI_CPUFREQ) { + return rte_power_acpi_cpufreq_init(lcore_id); + } + if (global_default_env == PM_ENV_KVM_VM) { + return rte_power_kvm_vm_init(lcore_id); + } + /* Auto detect Environment */ + RTE_LOG(INFO, POWER, "Attempting to initialise ACPI cpufreq power " + "management...\n"); + ret = rte_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 = rte_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 lcore_id) +{ + if (global_default_env == PM_ENV_ACPI_CPUFREQ) + return rte_power_acpi_cpufreq_exit(lcore_id); + if (global_default_env == PM_ENV_KVM_VM) + return rte_power_kvm_vm_exit(lcore_id); + + RTE_LOG(ERR, POWER, "Environment has not been set, unable to exit " + "gracefully\n"); + return -1; + +} |