diff options
Diffstat (limited to 'src/dpdk_lib18/librte_power')
| -rwxr-xr-x | src/dpdk_lib18/librte_power/Makefile | 49 | ||||
| -rwxr-xr-x | src/dpdk_lib18/librte_power/channel_commands.h | 77 | ||||
| -rwxr-xr-x | src/dpdk_lib18/librte_power/guest_channel.c | 162 | ||||
| -rwxr-xr-x | src/dpdk_lib18/librte_power/guest_channel.h | 89 | ||||
| -rwxr-xr-x | src/dpdk_lib18/librte_power/rte_power.c | 143 | ||||
| -rwxr-xr-x | src/dpdk_lib18/librte_power/rte_power.h | 251 | ||||
| -rwxr-xr-x | src/dpdk_lib18/librte_power/rte_power_acpi_cpufreq.c | 545 | ||||
| -rwxr-xr-x | src/dpdk_lib18/librte_power/rte_power_acpi_cpufreq.h | 192 | ||||
| -rwxr-xr-x | src/dpdk_lib18/librte_power/rte_power_common.h | 39 | ||||
| -rwxr-xr-x | src/dpdk_lib18/librte_power/rte_power_kvm_vm.c | 136 | ||||
| -rwxr-xr-x | src/dpdk_lib18/librte_power/rte_power_kvm_vm.h | 179 |
11 files changed, 1862 insertions, 0 deletions
diff --git a/src/dpdk_lib18/librte_power/Makefile b/src/dpdk_lib18/librte_power/Makefile new file mode 100755 index 00000000..d672a5a6 --- /dev/null +++ b/src/dpdk_lib18/librte_power/Makefile @@ -0,0 +1,49 @@ +# 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_SDK)/mk/rte.vars.mk + +# library name +LIB = librte_power.a + +CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3 -fno-strict-aliasing + +# all source are stored in SRCS-y +SRCS-$(CONFIG_RTE_LIBRTE_POWER) := rte_power.c rte_power_acpi_cpufreq.c +SRCS-$(CONFIG_RTE_LIBRTE_POWER) += rte_power_kvm_vm.c guest_channel.c + +# install this header file +SYMLINK-$(CONFIG_RTE_LIBRTE_POWER)-include := rte_power.h + +# this lib needs eal +DEPDIRS-$(CONFIG_RTE_LIBRTE_POWER) += lib/librte_eal + +include $(RTE_SDK)/mk/rte.lib.mk diff --git a/src/dpdk_lib18/librte_power/channel_commands.h b/src/dpdk_lib18/librte_power/channel_commands.h new file mode 100755 index 00000000..7e78a8b3 --- /dev/null +++ b/src/dpdk_lib18/librte_power/channel_commands.h @@ -0,0 +1,77 @@ +/*- + * 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. + */ + +#ifndef CHANNEL_COMMANDS_H_ +#define CHANNEL_COMMANDS_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include <stdint.h> + +/* Maximum number of CPUs */ +#define CHANNEL_CMDS_MAX_CPUS 64 +#if CHANNEL_CMDS_MAX_CPUS > 64 +#error Maximum number of cores is 64, overflow is guaranteed to \ + cause problems with VM Power Management +#endif + +/* Maximum number of channels per VM */ +#define CHANNEL_CMDS_MAX_VM_CHANNELS 64 + +/* Maximum number of channels per VM */ +#define CHANNEL_CMDS_MAX_VM_CHANNELS 64 + +/* Valid Commands */ +#define CPU_POWER 1 +#define CPU_POWER_CONNECT 2 + +/* CPU Power Command Scaling */ +#define CPU_POWER_SCALE_UP 1 +#define CPU_POWER_SCALE_DOWN 2 +#define CPU_POWER_SCALE_MAX 3 +#define CPU_POWER_SCALE_MIN 4 + +struct channel_packet { + uint64_t resource_id; /**< core_num, device */ + uint32_t unit; /**< scale down/up/min/max */ + uint32_t command; /**< Power, IO, etc */ +}; + + +#ifdef __cplusplus +} +#endif + +#endif /* CHANNEL_COMMANDS_H_ */ diff --git a/src/dpdk_lib18/librte_power/guest_channel.c b/src/dpdk_lib18/librte_power/guest_channel.c new file mode 100755 index 00000000..22956657 --- /dev/null +++ b/src/dpdk_lib18/librte_power/guest_channel.c @@ -0,0 +1,162 @@ +/*- + * 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 <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <signal.h> +#include <limits.h> +#include <fcntl.h> +#include <string.h> +#include <errno.h> + + +#include <rte_log.h> +#include <rte_config.h> + +#include "guest_channel.h" +#include "channel_commands.h" + +#define RTE_LOGTYPE_GUEST_CHANNEL RTE_LOGTYPE_USER1 + +static int global_fds[RTE_MAX_LCORE]; + +int +guest_channel_host_connect(const char *path, unsigned lcore_id) +{ + int flags, ret; + struct channel_packet pkt; + char fd_path[PATH_MAX]; + int fd = -1; + + if (lcore_id >= RTE_MAX_LCORE) { + RTE_LOG(ERR, GUEST_CHANNEL, "Channel(%u) is out of range 0...%d\n", + lcore_id, RTE_MAX_LCORE-1); + return -1; + } + /* check if path is already open */ + if (global_fds[lcore_id] != 0) { + RTE_LOG(ERR, GUEST_CHANNEL, "Channel(%u) is already open with fd %d\n", + lcore_id, global_fds[lcore_id]); + return -1; + } + + snprintf(fd_path, PATH_MAX, "%s.%u", path, lcore_id); + RTE_LOG(INFO, GUEST_CHANNEL, "Opening channel '%s' for lcore %u\n", + fd_path, lcore_id); + fd = open(fd_path, O_RDWR); + if (fd < 0) { + RTE_LOG(ERR, GUEST_CHANNEL, "Unable to to connect to '%s' with error " + "%s\n", fd_path, strerror(errno)); + return -1; + } + + flags = fcntl(fd, F_GETFL, 0); + if (flags < 0) { + RTE_LOG(ERR, GUEST_CHANNEL, "Failed on fcntl get flags for file %s\n", + fd_path); + goto error; + } + + flags |= O_NONBLOCK; + if (fcntl(fd, F_SETFL, flags) < 0) { + RTE_LOG(ERR, GUEST_CHANNEL, "Failed on setting non-blocking mode for " + "file %s", fd_path); + goto error; + } + /* QEMU needs a delay after connection */ + sleep(1); + + /* Send a test packet, this command is ignored by the host, but a successful + * send indicates that the host endpoint is monitoring. + */ + pkt.command = CPU_POWER_CONNECT; + global_fds[lcore_id] = fd; + ret = guest_channel_send_msg(&pkt, lcore_id); + if (ret != 0) { + RTE_LOG(ERR, GUEST_CHANNEL, "Error on channel '%s' communications " + "test: %s\n", fd_path, strerror(ret)); + goto error; + } + RTE_LOG(INFO, GUEST_CHANNEL, "Channel '%s' is now connected\n", fd_path); + return 0; +error: + close(fd); + global_fds[lcore_id] = 0; + return -1; +} + +int +guest_channel_send_msg(struct channel_packet *pkt, unsigned lcore_id) +{ + int ret, buffer_len = sizeof(*pkt); + void *buffer = pkt; + + if (lcore_id >= RTE_MAX_LCORE) { + RTE_LOG(ERR, GUEST_CHANNEL, "Channel(%u) is out of range 0...%d\n", + lcore_id, RTE_MAX_LCORE-1); + return -1; + } + + if (global_fds[lcore_id] == 0) { + RTE_LOG(ERR, GUEST_CHANNEL, "Channel is not connected\n"); + return -1; + } + while (buffer_len > 0) { + ret = write(global_fds[lcore_id], buffer, buffer_len); + if (ret == buffer_len) + return 0; + if (ret == -1) { + if (errno == EINTR) + continue; + return errno; + } + buffer = (char *)buffer + ret; + buffer_len -= ret; + } + return 0; +} + +void +guest_channel_host_disconnect(unsigned lcore_id) +{ + if (lcore_id >= RTE_MAX_LCORE) { + RTE_LOG(ERR, GUEST_CHANNEL, "Channel(%u) is out of range 0...%d\n", + lcore_id, RTE_MAX_LCORE-1); + return; + } + if (global_fds[lcore_id] == 0) + return; + close(global_fds[lcore_id]); + global_fds[lcore_id] = 0; +} diff --git a/src/dpdk_lib18/librte_power/guest_channel.h b/src/dpdk_lib18/librte_power/guest_channel.h new file mode 100755 index 00000000..9e18af52 --- /dev/null +++ b/src/dpdk_lib18/librte_power/guest_channel.h @@ -0,0 +1,89 @@ +/*- + * 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. + */ +#ifndef _GUEST_CHANNEL_H +#define _GUEST_CHANNEL_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include <channel_commands.h> + +/** + * Connect to the Virtio-Serial VM end-point located in path. It is + * thread safe for unique lcore_ids. This function must be only called once from + * each lcore. + * + * @param path + * The path to the serial device on the filesystem + * @param lcore_id + * lcore_id. + * + * @return + * - 0 on success. + * - Negative on error. + */ +int guest_channel_host_connect(const char *path, unsigned lcore_id); + +/** + * Disconnect from an already connected Virtio-Serial Endpoint. + * + * + * @param lcore_id + * lcore_id. + * + */ +void guest_channel_host_disconnect(unsigned lcore_id); + +/** + * Send a message contained in pkt over the Virtio-Serial to the host endpoint. + * + * @param pkt + * Pointer to a populated struct guest_agent_pkt + * + * @param lcore_id + * lcore_id. + * + * @return + * - 0 on success. + * - Negative on channel not connected. + * - errno on write to channel error. + */ +int guest_channel_send_msg(struct channel_packet *pkt, unsigned lcore_id); + + +#ifdef __cplusplus +} +#endif + +#endif 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; + +} diff --git a/src/dpdk_lib18/librte_power/rte_power.h b/src/dpdk_lib18/librte_power/rte_power.h new file mode 100755 index 00000000..93380693 --- /dev/null +++ b/src/dpdk_lib18/librte_power/rte_power.h @@ -0,0 +1,251 @@ +/*- + * 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. + */ + +#ifndef _RTE_POWER_H +#define _RTE_POWER_H + +/** + * @file + * RTE Power Management + */ + +#include <rte_common.h> +#include <rte_byteorder.h> +#include <rte_log.h> +#include <rte_string_fns.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* Power Management Environment State */ +enum power_management_env {PM_ENV_NOT_SET, PM_ENV_ACPI_CPUFREQ, PM_ENV_KVM_VM}; + +/** + * Set the default power management implementation. If this is not called prior + * to rte_power_init(), then auto-detect of the environment will take place. + * It is not thread safe. + * + * @param env + * env. The environment in which to initialise Power Management for. + * + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_power_set_env(enum power_management_env env); + +/** + * Unset the global environment configuration. + * This can only be called after all threads have completed. + * + * @param None. + * + * @return + * None. + */ +void rte_power_unset_env(void); + +/** + * Get the default power management implementation. + * + * @param None. + * + * @return + * power_management_env The configured environment. + */ +enum power_management_env rte_power_get_env(void); + +/** + * Initialize power management for a specific lcore. If rte_power_set_env() has + * not been called then an auto-detect of the environment will start and + * initialise the corresponding resources. + * + * @param lcore_id + * lcore id. + * + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_power_init(unsigned lcore_id); + +/** + * Exit power management on a specific lcore. This will call the environment + * dependent exit function. + * + * + * @param lcore_id + * lcore id. + * + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_power_exit(unsigned lcore_id); + +/** + * Get the available frequencies of a specific lcore. + * Function pointer definition. Review each environments + * specific documentation for usage. + * + * @param lcore_id + * lcore id. + * @param freqs + * The buffer array to save the frequencies. + * @param num + * The number of frequencies to get. + * + * @return + * The number of available frequencies. + */ +typedef uint32_t (*rte_power_freqs_t)(unsigned lcore_id, uint32_t *freqs, + uint32_t num); + +extern rte_power_freqs_t rte_power_freqs; + +/** + * Return the current index of available frequencies of a specific lcore. + * Function pointer definition. Review each environments + * specific documentation for usage. + * + * @param lcore_id + * lcore id. + * + * @return + * The current index of available frequencies. + */ +typedef uint32_t (*rte_power_get_freq_t)(unsigned lcore_id); + +extern rte_power_get_freq_t rte_power_get_freq; + +/** + * Set the new frequency for a specific lcore by indicating the index of + * available frequencies. + * Function pointer definition. Review each environments + * specific documentation for usage. + * + * @param lcore_id + * lcore id. + * @param index + * The index of available frequencies. + * + * @return + * - 1 on success with frequency changed. + * - 0 on success without frequency changed. + * - Negative on error. + */ +typedef int (*rte_power_set_freq_t)(unsigned lcore_id, uint32_t index); + +extern rte_power_set_freq_t rte_power_set_freq; + +/** + * Function pointer definition for generic frequency change functions. Review + * each environments specific documentation for usage. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success with frequency changed. + * - 0 on success without frequency changed. + * - Negative on error. + */ +typedef int (*rte_power_freq_change_t)(unsigned lcore_id); + +/** + * Scale up the frequency of a specific lcore according to the available + * frequencies. + * Review each environments specific documentation for usage. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success with frequency changed. + * - 0 on success without frequency changed. + * - Negative on error. + */ +extern rte_power_freq_change_t rte_power_freq_up; + +/** + * Scale down the frequency of a specific lcore according to the available + * frequencies. + * Review each environments specific documentation for usage. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success with frequency changed. + * - 0 on success without frequency changed. + * - Negative on error. + */ + +extern rte_power_freq_change_t rte_power_freq_down; + +/** + * Scale up the frequency of a specific lcore to the highest according to the + * available frequencies. + * Review each environments specific documentation for usage. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success with frequency changed. + * - 0 on success without frequency changed. + * - Negative on error. + */ +extern rte_power_freq_change_t rte_power_freq_max; + +/** + * Scale down the frequency of a specific lcore to the lowest according to the + * available frequencies. + * Review each environments specific documentation for usage.. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success with frequency changed. + * - 0 on success without frequency changed. + * - Negative on error. + */ +rte_power_freq_change_t rte_power_freq_min; + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/src/dpdk_lib18/librte_power/rte_power_acpi_cpufreq.c b/src/dpdk_lib18/librte_power/rte_power_acpi_cpufreq.c new file mode 100755 index 00000000..a56c9b59 --- /dev/null +++ b/src/dpdk_lib18/librte_power/rte_power_acpi_cpufreq.c @@ -0,0 +1,545 @@ +/*- + * 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 <stdio.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <signal.h> +#include <limits.h> + +#include <rte_memcpy.h> +#include <rte_atomic.h> + +#include "rte_power_acpi_cpufreq.h" +#include "rte_power_common.h" + +#ifdef RTE_LIBRTE_POWER_DEBUG +#define POWER_DEBUG_TRACE(fmt, args...) do { \ + RTE_LOG(ERR, POWER, "%s: " fmt, __func__, ## args); \ +} while (0) +#else +#define POWER_DEBUG_TRACE(fmt, args...) +#endif + +#define FOPEN_OR_ERR_RET(f, retval) do { \ + if ((f) == NULL) { \ + RTE_LOG(ERR, POWER, "File not openned\n"); \ + return retval; \ + } \ +} while (0) + +#define FOPS_OR_NULL_GOTO(ret, label) do { \ + if ((ret) == NULL) { \ + RTE_LOG(ERR, POWER, "fgets returns nothing\n"); \ + goto label; \ + } \ +} while (0) + +#define FOPS_OR_ERR_GOTO(ret, label) do { \ + if ((ret) < 0) { \ + RTE_LOG(ERR, POWER, "File operations failed\n"); \ + goto label; \ + } \ +} while (0) + +#define STR_SIZE 1024 +#define POWER_CONVERT_TO_DECIMAL 10 + +#define POWER_GOVERNOR_USERSPACE "userspace" +#define POWER_SYSFILE_GOVERNOR \ + "/sys/devices/system/cpu/cpu%u/cpufreq/scaling_governor" +#define POWER_SYSFILE_AVAIL_FREQ \ + "/sys/devices/system/cpu/cpu%u/cpufreq/scaling_available_frequencies" +#define POWER_SYSFILE_SETSPEED \ + "/sys/devices/system/cpu/cpu%u/cpufreq/scaling_setspeed" + +enum power_state { + POWER_IDLE = 0, + POWER_ONGOING, + POWER_USED, + POWER_UNKNOWN +}; + +/** + * Power info per lcore. + */ +struct rte_power_info { + unsigned lcore_id; /**< Logical core id */ + uint32_t freqs[RTE_MAX_LCORE_FREQS]; /**< Frequency array */ + uint32_t nb_freqs; /**< number of available freqs */ + FILE *f; /**< FD of scaling_setspeed */ + char governor_ori[32]; /**< Original governor name */ + uint32_t curr_idx; /**< Freq index in freqs array */ + volatile uint32_t state; /**< Power in use state */ +} __rte_cache_aligned; + +static struct rte_power_info lcore_power_info[RTE_MAX_LCORE]; + +/** + * It is to set specific freq for specific logical core, according to the index + * of supported frequencies. + */ +static int +set_freq_internal(struct rte_power_info *pi, uint32_t idx) +{ + if (idx >= RTE_MAX_LCORE_FREQS || idx >= pi->nb_freqs) { + RTE_LOG(ERR, POWER, "Invalid frequency index %u, which " + "should be less than %u\n", idx, pi->nb_freqs); + return -1; + } + + /* Check if it is the same as current */ + if (idx == pi->curr_idx) + return 0; + + POWER_DEBUG_TRACE("Freqency[%u] %u to be set for lcore %u\n", + idx, pi->freqs[idx], pi->lcore_id); + if (fseek(pi->f, 0, SEEK_SET) < 0) { + RTE_LOG(ERR, POWER, "Fail to set file position indicator to 0 " + "for setting frequency for lcore %u\n", pi->lcore_id); + return -1; + } + if (fprintf(pi->f, "%u", pi->freqs[idx]) < 0) { + RTE_LOG(ERR, POWER, "Fail to write new frequency for " + "lcore %u\n", pi->lcore_id); + return -1; + } + fflush(pi->f); + pi->curr_idx = idx; + + return 1; +} + +/** + * It is to check the current scaling governor by reading sys file, and then + * set it into 'userspace' if it is not by writing the sys file. The original + * governor will be saved for rolling back. + */ +static int +power_set_governor_userspace(struct rte_power_info *pi) +{ + FILE *f; + int ret = -1; + char buf[BUFSIZ]; + char fullpath[PATH_MAX]; + char *s; + int val; + + snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_GOVERNOR, + pi->lcore_id); + f = fopen(fullpath, "rw+"); + FOPEN_OR_ERR_RET(f, ret); + + s = fgets(buf, sizeof(buf), f); + FOPS_OR_NULL_GOTO(s, out); + + /* Check if current governor is userspace */ + if (strncmp(buf, POWER_GOVERNOR_USERSPACE, + sizeof(POWER_GOVERNOR_USERSPACE)) == 0) { + ret = 0; + POWER_DEBUG_TRACE("Power management governor of lcore %u is " + "already userspace\n", pi->lcore_id); + goto out; + } + /* Save the original governor */ + snprintf(pi->governor_ori, sizeof(pi->governor_ori), "%s", buf); + + /* Write 'userspace' to the governor */ + val = fseek(f, 0, SEEK_SET); + FOPS_OR_ERR_GOTO(val, out); + + val = fputs(POWER_GOVERNOR_USERSPACE, f); + FOPS_OR_ERR_GOTO(val, out); + + ret = 0; + RTE_LOG(INFO, POWER, "Power management governor of lcore %u has been " + "set to user space successfully\n", pi->lcore_id); +out: + fclose(f); + + return ret; +} + +/** + * It is to get the available frequencies of the specific lcore by reading the + * sys file. + */ +static int +power_get_available_freqs(struct rte_power_info *pi) +{ + FILE *f; + int ret = -1, i, count; + char *p; + char buf[BUFSIZ]; + char fullpath[PATH_MAX]; + char *freqs[RTE_MAX_LCORE_FREQS]; + char *s; + + snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_AVAIL_FREQ, + pi->lcore_id); + f = fopen(fullpath, "r"); + FOPEN_OR_ERR_RET(f, ret); + + s = fgets(buf, sizeof(buf), f); + FOPS_OR_NULL_GOTO(s, out); + + /* Strip the line break if there is */ + p = strchr(buf, '\n'); + if (p != NULL) + *p = 0; + + /* Split string into at most RTE_MAX_LCORE_FREQS frequencies */ + count = rte_strsplit(buf, sizeof(buf), freqs, + RTE_MAX_LCORE_FREQS, ' '); + if (count <= 0) { + RTE_LOG(ERR, POWER, "No available frequency in " + ""POWER_SYSFILE_AVAIL_FREQ"\n", pi->lcore_id); + goto out; + } + if (count >= RTE_MAX_LCORE_FREQS) { + RTE_LOG(ERR, POWER, "Too many available frequencies : %d\n", + count); + goto out; + } + + /* Store the available frequncies into power context */ + for (i = 0, pi->nb_freqs = 0; i < count; i++) { + POWER_DEBUG_TRACE("Lcore %u frequency[%d]: %s\n", pi->lcore_id, + i, freqs[i]); + pi->freqs[pi->nb_freqs++] = strtoul(freqs[i], &p, + POWER_CONVERT_TO_DECIMAL); + } + + ret = 0; + POWER_DEBUG_TRACE("%d frequencie(s) of lcore %u are available\n", + count, pi->lcore_id); +out: + fclose(f); + + return ret; +} + +/** + * It is to fopen the sys file for the future setting the lcore frequency. + */ +static int +power_init_for_setting_freq(struct rte_power_info *pi) +{ + FILE *f; + char fullpath[PATH_MAX]; + char buf[BUFSIZ]; + uint32_t i, freq; + char *s; + + snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_SETSPEED, + pi->lcore_id); + f = fopen(fullpath, "rw+"); + FOPEN_OR_ERR_RET(f, -1); + + s = fgets(buf, sizeof(buf), f); + FOPS_OR_NULL_GOTO(s, out); + + freq = strtoul(buf, NULL, POWER_CONVERT_TO_DECIMAL); + for (i = 0; i < pi->nb_freqs; i++) { + if (freq == pi->freqs[i]) { + pi->curr_idx = i; + pi->f = f; + return 0; + } + } + +out: + fclose(f); + + return -1; +} + +int +rte_power_acpi_cpufreq_init(unsigned lcore_id) +{ + struct rte_power_info *pi; + + if (lcore_id >= RTE_MAX_LCORE) { + RTE_LOG(ERR, POWER, "Lcore id %u can not exceeds %u\n", + lcore_id, RTE_MAX_LCORE - 1U); + return -1; + } + + pi = &lcore_power_info[lcore_id]; + if (rte_atomic32_cmpset(&(pi->state), POWER_IDLE, POWER_ONGOING) + == 0) { + RTE_LOG(INFO, POWER, "Power management of lcore %u is " + "in use\n", lcore_id); + return -1; + } + + pi->lcore_id = lcore_id; + /* Check and set the governor */ + if (power_set_governor_userspace(pi) < 0) { + RTE_LOG(ERR, POWER, "Cannot set governor of lcore %u to " + "userspace\n", lcore_id); + goto fail; + } + + /* Get the available frequencies */ + if (power_get_available_freqs(pi) < 0) { + RTE_LOG(ERR, POWER, "Cannot get available frequencies of " + "lcore %u\n", lcore_id); + goto fail; + } + + /* Init for setting lcore frequency */ + if (power_init_for_setting_freq(pi) < 0) { + RTE_LOG(ERR, POWER, "Cannot init for setting frequency for " + "lcore %u\n", lcore_id); + goto fail; + } + + /* Set freq to max by default */ + if (rte_power_acpi_cpufreq_freq_max(lcore_id) < 0) { + RTE_LOG(ERR, POWER, "Cannot set frequency of lcore %u " + "to max\n", lcore_id); + goto fail; + } + + RTE_LOG(INFO, POWER, "Initialized successfully for lcore %u " + "power manamgement\n", lcore_id); + rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_USED); + + return 0; + +fail: + rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_UNKNOWN); + + return -1; +} + +/** + * It is to check the governor and then set the original governor back if + * needed by writing the the sys file. + */ +static int +power_set_governor_original(struct rte_power_info *pi) +{ + FILE *f; + int ret = -1; + char buf[BUFSIZ]; + char fullpath[PATH_MAX]; + char *s; + int val; + + snprintf(fullpath, sizeof(fullpath), POWER_SYSFILE_GOVERNOR, + pi->lcore_id); + f = fopen(fullpath, "rw+"); + FOPEN_OR_ERR_RET(f, ret); + + s = fgets(buf, sizeof(buf), f); + FOPS_OR_NULL_GOTO(s, out); + + /* Check if the governor to be set is the same as current */ + if (strncmp(buf, pi->governor_ori, sizeof(pi->governor_ori)) == 0) { + ret = 0; + POWER_DEBUG_TRACE("Power management governor of lcore %u " + "has already been set to %s\n", + pi->lcore_id, pi->governor_ori); + goto out; + } + + /* Write back the original governor */ + val = fseek(f, 0, SEEK_SET); + FOPS_OR_ERR_GOTO(val, out); + + val = fputs(pi->governor_ori, f); + FOPS_OR_ERR_GOTO(val, out); + + ret = 0; + RTE_LOG(INFO, POWER, "Power management governor of lcore %u " + "has been set back to %s successfully\n", + pi->lcore_id, pi->governor_ori); +out: + fclose(f); + + return ret; +} + +int +rte_power_acpi_cpufreq_exit(unsigned lcore_id) +{ + struct rte_power_info *pi; + + if (lcore_id >= RTE_MAX_LCORE) { + RTE_LOG(ERR, POWER, "Lcore id %u can not exceeds %u\n", + lcore_id, RTE_MAX_LCORE - 1U); + return -1; + } + pi = &lcore_power_info[lcore_id]; + if (rte_atomic32_cmpset(&(pi->state), POWER_USED, POWER_ONGOING) + == 0) { + RTE_LOG(INFO, POWER, "Power management of lcore %u is " + "not used\n", lcore_id); + return -1; + } + + /* Close FD of setting freq */ + fclose(pi->f); + pi->f = NULL; + + /* Set the governor back to the original */ + if (power_set_governor_original(pi) < 0) { + RTE_LOG(ERR, POWER, "Cannot set the governor of %u back " + "to the original\n", lcore_id); + goto fail; + } + + RTE_LOG(INFO, POWER, "Power management of lcore %u has exited from " + "'userspace' mode and been set back to the " + "original\n", lcore_id); + rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_IDLE); + + return 0; + +fail: + rte_atomic32_cmpset(&(pi->state), POWER_ONGOING, POWER_UNKNOWN); + + return -1; +} + +uint32_t +rte_power_acpi_cpufreq_freqs(unsigned lcore_id, uint32_t *freqs, uint32_t num) +{ + struct rte_power_info *pi; + + if (lcore_id >= RTE_MAX_LCORE || !freqs) { + RTE_LOG(ERR, POWER, "Invalid input parameter\n"); + return 0; + } + + pi = &lcore_power_info[lcore_id]; + if (num < pi->nb_freqs) { + RTE_LOG(ERR, POWER, "Buffer size is not enough\n"); + return 0; + } + rte_memcpy(freqs, pi->freqs, pi->nb_freqs * sizeof(uint32_t)); + + return pi->nb_freqs; +} + +uint32_t +rte_power_acpi_cpufreq_get_freq(unsigned lcore_id) +{ + if (lcore_id >= RTE_MAX_LCORE) { + RTE_LOG(ERR, POWER, "Invalid lcore ID\n"); + return RTE_POWER_INVALID_FREQ_INDEX; + } + + return lcore_power_info[lcore_id].curr_idx; +} + +int +rte_power_acpi_cpufreq_set_freq(unsigned lcore_id, uint32_t index) +{ + if (lcore_id >= RTE_MAX_LCORE) { + RTE_LOG(ERR, POWER, "Invalid lcore ID\n"); + return -1; + } + + return set_freq_internal(&(lcore_power_info[lcore_id]), index); +} + +int +rte_power_acpi_cpufreq_freq_down(unsigned lcore_id) +{ + struct rte_power_info *pi; + + if (lcore_id >= RTE_MAX_LCORE) { + RTE_LOG(ERR, POWER, "Invalid lcore ID\n"); + return -1; + } + + pi = &lcore_power_info[lcore_id]; + if (pi->curr_idx + 1 == pi->nb_freqs) + return 0; + + /* Frequencies in the array are from high to low. */ + return set_freq_internal(pi, pi->curr_idx + 1); +} + +int +rte_power_acpi_cpufreq_freq_up(unsigned lcore_id) +{ + struct rte_power_info *pi; + + if (lcore_id >= RTE_MAX_LCORE) { + RTE_LOG(ERR, POWER, "Invalid lcore ID\n"); + return -1; + } + + pi = &lcore_power_info[lcore_id]; + if (pi->curr_idx == 0) + return 0; + + /* Frequencies in the array are from high to low. */ + return set_freq_internal(pi, pi->curr_idx - 1); +} + +int +rte_power_acpi_cpufreq_freq_max(unsigned lcore_id) +{ + if (lcore_id >= RTE_MAX_LCORE) { + RTE_LOG(ERR, POWER, "Invalid lcore ID\n"); + return -1; + } + + /* Frequencies in the array are from high to low. */ + return set_freq_internal(&lcore_power_info[lcore_id], 0); +} + +int +rte_power_acpi_cpufreq_freq_min(unsigned lcore_id) +{ + struct rte_power_info *pi; + + if (lcore_id >= RTE_MAX_LCORE) { + RTE_LOG(ERR, POWER, "Invalid lcore ID\n"); + return -1; + } + + pi = &lcore_power_info[lcore_id]; + + /* Frequencies in the array are from high to low. */ + return set_freq_internal(pi, pi->nb_freqs - 1); +} diff --git a/src/dpdk_lib18/librte_power/rte_power_acpi_cpufreq.h b/src/dpdk_lib18/librte_power/rte_power_acpi_cpufreq.h new file mode 100755 index 00000000..68578e9b --- /dev/null +++ b/src/dpdk_lib18/librte_power/rte_power_acpi_cpufreq.h @@ -0,0 +1,192 @@ +/*- + * 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. + */ + +#ifndef _RTE_POWER_ACPI_CPUFREQ_H +#define _RTE_POWER_ACPI_CPUFREQ_H + +/** + * @file + * RTE Power Management via userspace ACPI cpufreq + */ + +#include <rte_common.h> +#include <rte_byteorder.h> +#include <rte_log.h> +#include <rte_string_fns.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * Initialize power management for a specific lcore. It will check and set the + * governor to userspace for the lcore, get the available frequencies, and + * prepare to set new lcore frequency. + * + * @param lcore_id + * lcore id. + * + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_power_acpi_cpufreq_init(unsigned lcore_id); + +/** + * Exit power management on a specific lcore. It will set the governor to which + * is before initialized. + * + * @param lcore_id + * lcore id. + * + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_power_acpi_cpufreq_exit(unsigned lcore_id); + +/** + * Get the available frequencies of a specific lcore. The return value will be + * the minimal one of the total number of available frequencies and the number + * of buffer. The index of available frequencies used in other interfaces + * should be in the range of 0 to this return value. + * It should be protected outside of this function for threadsafe. + * + * @param lcore_id + * lcore id. + * @param freqs + * The buffer array to save the frequencies. + * @param num + * The number of frequencies to get. + * + * @return + * The number of available frequencies. + */ +uint32_t rte_power_acpi_cpufreq_freqs(unsigned lcore_id, uint32_t *freqs, + uint32_t num); + +/** + * Return the current index of available frequencies of a specific lcore. It + * will return 'RTE_POWER_INVALID_FREQ_INDEX = (~0)' if error. + * It should be protected outside of this function for threadsafe. + * + * @param lcore_id + * lcore id. + * + * @return + * The current index of available frequencies. + */ +uint32_t rte_power_acpi_cpufreq_get_freq(unsigned lcore_id); + +/** + * Set the new frequency for a specific lcore by indicating the index of + * available frequencies. + * It should be protected outside of this function for threadsafe. + * + * @param lcore_id + * lcore id. + * @param index + * The index of available frequencies. + * + * @return + * - 1 on success with frequency changed. + * - 0 on success without frequency changed. + * - Negative on error. + */ +int rte_power_acpi_cpufreq_set_freq(unsigned lcore_id, uint32_t index); + +/** + * Scale up the frequency of a specific lcore according to the available + * frequencies. + * It should be protected outside of this function for threadsafe. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success with frequency changed. + * - 0 on success without frequency changed. + * - Negative on error. + */ +int rte_power_acpi_cpufreq_freq_up(unsigned lcore_id); + +/** + * Scale down the frequency of a specific lcore according to the available + * frequencies. + * It should be protected outside of this function for threadsafe. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success with frequency changed. + * - 0 on success without frequency changed. + * - Negative on error. + */ +int rte_power_acpi_cpufreq_freq_down(unsigned lcore_id); + +/** + * Scale up the frequency of a specific lcore to the highest according to the + * available frequencies. + * It should be protected outside of this function for threadsafe. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success with frequency changed. + * - 0 on success without frequency changed. + * - Negative on error. + */ +int rte_power_acpi_cpufreq_freq_max(unsigned lcore_id); + +/** + * Scale down the frequency of a specific lcore to the lowest according to the + * available frequencies. + * It should be protected outside of this function for threadsafe. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success with frequency changed. + * - 0 on success without frequency chnaged. + * - Negative on error. + */ +int rte_power_acpi_cpufreq_freq_min(unsigned lcore_id); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/src/dpdk_lib18/librte_power/rte_power_common.h b/src/dpdk_lib18/librte_power/rte_power_common.h new file mode 100755 index 00000000..64bd168f --- /dev/null +++ b/src/dpdk_lib18/librte_power/rte_power_common.h @@ -0,0 +1,39 @@ +/*- + * 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. + */ + +#ifndef RTE_POWER_COMMON_H_ +#define RTE_POWER_COMMON_H_ + +#define RTE_POWER_INVALID_FREQ_INDEX (~0) + +#endif /* RTE_POWER_COMMON_H_ */ diff --git a/src/dpdk_lib18/librte_power/rte_power_kvm_vm.c b/src/dpdk_lib18/librte_power/rte_power_kvm_vm.c new file mode 100755 index 00000000..11596c39 --- /dev/null +++ b/src/dpdk_lib18/librte_power/rte_power_kvm_vm.c @@ -0,0 +1,136 @@ +/*- + * 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 <errno.h> +#include <string.h> + +#include <rte_log.h> +#include <rte_config.h> + +#include "guest_channel.h" +#include "channel_commands.h" +#include "rte_power_kvm_vm.h" +#include "rte_power_common.h" + +#define FD_PATH "/dev/virtio-ports/virtio.serial.port.poweragent" + +static struct channel_packet pkt[CHANNEL_CMDS_MAX_VM_CHANNELS]; + + +int +rte_power_kvm_vm_init(unsigned lcore_id) +{ + if (lcore_id >= CHANNEL_CMDS_MAX_VM_CHANNELS) { + RTE_LOG(ERR, POWER, "Core(%u) is out of range 0...%d\n", + lcore_id, CHANNEL_CMDS_MAX_VM_CHANNELS-1); + return -1; + } + pkt[lcore_id].command = CPU_POWER; + pkt[lcore_id].resource_id = lcore_id; + return guest_channel_host_connect(FD_PATH, lcore_id); +} + +int +rte_power_kvm_vm_exit(unsigned lcore_id) +{ + guest_channel_host_disconnect(lcore_id); + return 0; +} + +uint32_t +rte_power_kvm_vm_freqs(__attribute__((unused)) unsigned lcore_id, + __attribute__((unused)) uint32_t *freqs, + __attribute__((unused)) uint32_t num) +{ + RTE_LOG(ERR, POWER, "rte_power_freqs is not implemented " + "for Virtual Machine Power Management\n"); + return -ENOTSUP; +} + +uint32_t +rte_power_kvm_vm_get_freq(__attribute__((unused)) unsigned lcore_id) +{ + RTE_LOG(ERR, POWER, "rte_power_get_freq is not implemented " + "for Virtual Machine Power Management\n"); + return -ENOTSUP; +} + +int +rte_power_kvm_vm_set_freq(__attribute__((unused)) unsigned lcore_id, + __attribute__((unused)) uint32_t index) +{ + RTE_LOG(ERR, POWER, "rte_power_set_freq is not implemented " + "for Virtual Machine Power Management\n"); + return -ENOTSUP; +} + +static inline int +send_msg(unsigned lcore_id, uint32_t scale_direction) +{ + int ret; + + if (lcore_id >= CHANNEL_CMDS_MAX_VM_CHANNELS) { + RTE_LOG(ERR, POWER, "Core(%u) is out of range 0...%d\n", + lcore_id, CHANNEL_CMDS_MAX_VM_CHANNELS-1); + return -1; + } + pkt[lcore_id].unit = scale_direction; + ret = guest_channel_send_msg(&pkt[lcore_id], lcore_id); + if (ret == 0) + return 1; + RTE_LOG(DEBUG, POWER, "Error sending message: %s\n", strerror(ret)); + return -1; +} + +int +rte_power_kvm_vm_freq_up(unsigned lcore_id) +{ + return send_msg(lcore_id, CPU_POWER_SCALE_UP); +} + +int +rte_power_kvm_vm_freq_down(unsigned lcore_id) +{ + return send_msg(lcore_id, CPU_POWER_SCALE_DOWN); +} + +int +rte_power_kvm_vm_freq_max(unsigned lcore_id) +{ + return send_msg(lcore_id, CPU_POWER_SCALE_MAX); +} + +int +rte_power_kvm_vm_freq_min(unsigned lcore_id) +{ + return send_msg(lcore_id, CPU_POWER_SCALE_MIN); +} diff --git a/src/dpdk_lib18/librte_power/rte_power_kvm_vm.h b/src/dpdk_lib18/librte_power/rte_power_kvm_vm.h new file mode 100755 index 00000000..dcbc878a --- /dev/null +++ b/src/dpdk_lib18/librte_power/rte_power_kvm_vm.h @@ -0,0 +1,179 @@ +/*- + * 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. + */ + +#ifndef _RTE_POWER_KVM_VM_H +#define _RTE_POWER_KVM_VM_H + +/** + * @file + * RTE Power Management KVM VM + */ + +#include <rte_common.h> +#include <rte_byteorder.h> +#include <rte_log.h> +#include <rte_string_fns.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * Initialize power management for a specific lcore. + * + * @param lcore_id + * lcore id. + * + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_power_kvm_vm_init(unsigned lcore_id); + +/** + * Exit power management on a specific lcore. + * + * @param lcore_id + * lcore id. + * + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_power_kvm_vm_exit(unsigned lcore_id); + +/** + * Get the available frequencies of a specific lcore. + * It is not currently supported for VM Power Management. + * + * @param lcore_id + * lcore id. + * @param freqs + * The buffer array to save the frequencies. + * @param num + * The number of frequencies to get. + * + * @return + * -ENOTSUP + */ +uint32_t rte_power_kvm_vm_freqs(unsigned lcore_id, uint32_t *freqs, + uint32_t num); + +/** + * Return the current index of available frequencies of a specific lcore. + * It is not currently supported for VM Power Management. + * + * @param lcore_id + * lcore id. + * + * @return + * -ENOTSUP + */ +uint32_t rte_power_kvm_vm_get_freq(unsigned lcore_id); + +/** + * Set the new frequency for a specific lcore by indicating the index of + * available frequencies. + * It is not currently supported for VM Power Management. + * + * @param lcore_id + * lcore id. + * @param index + * The index of available frequencies. + * + * @return + * -ENOTSUP + */ +int rte_power_kvm_vm_set_freq(unsigned lcore_id, uint32_t index); + +/** + * Scale up the frequency of a specific lcore. This request is forwarded to the + * host monitor. + * It should be protected outside of this function for threadsafe. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success. + * - Negative on error. + */ +int rte_power_kvm_vm_freq_up(unsigned lcore_id); + +/** + * Scale down the frequency of a specific lcore according to the available + * frequencies. + * It should be protected outside of this function for threadsafe. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success. + * - Negative on error. + */ +int rte_power_kvm_vm_freq_down(unsigned lcore_id); + +/** + * Scale up the frequency of a specific lcore to the highest according to the + * available frequencies. + * It should be protected outside of this function for threadsafe. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success. + * - Negative on error. + */ +int rte_power_kvm_vm_freq_max(unsigned lcore_id); + +/** + * Scale down the frequency of a specific lcore to the lowest according to the + * available frequencies. + * It should be protected outside of this function for threadsafe. + * + * @param lcore_id + * lcore id. + * + * @return + * - 1 on success. + * - Negative on error. + */ +int rte_power_kvm_vm_freq_min(unsigned lcore_id); + +#ifdef __cplusplus +} +#endif + +#endif |