examples/vm_power_manager/guest_cli/vm_power_cli_guest.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34
  35 #include <stdint.h>
  36 #include <string.h>
  37 #include <stdio.h>
  38 #include <termios.h>
  39
  40 #include <cmdline_rdline.h>
  41 #include <cmdline_parse.h>
  42 #include <cmdline_parse_string.h>
  43 #include <cmdline_parse_num.h>
  44 #include <cmdline_socket.h>
  45 #include <cmdline.h>
  46 #include <rte_config.h>
  47 #include <rte_log.h>
  48 #include <rte_lcore.h>
  49
  50 #include <rte_power.h>
  51
  52 #include "vm_power_cli_guest.h"
  53
  54
  55 #define CHANNEL_PATH "/dev/virtio-ports/virtio.serial.port.poweragent"
  56
  57
  58 #define RTE_LOGTYPE_GUEST_CHANNEL RTE_LOGTYPE_USER1
  59
  60 struct cmd_quit_result {
  61         cmdline_fixed_string_t quit;
  62 };
  63
  64 static void cmd_quit_parsed(__attribute__((unused)) void *parsed_result,
  65                                 __attribute__((unused)) struct cmdline *cl,
  66                             __attribute__((unused)) void *data)
  67 {
  68         unsigned lcore_id;
  69
  70         RTE_LCORE_FOREACH(lcore_id) {
  71                 rte_power_exit(lcore_id);
  72         }
  73         cmdline_quit(cl);
  74 }
  75
  76 cmdline_parse_token_string_t cmd_quit_quit =
  77         TOKEN_STRING_INITIALIZER(struct cmd_quit_result, quit, "quit");
  78
  79 cmdline_parse_inst_t cmd_quit = {
  80         .f = cmd_quit_parsed,  /* function to call */
  81         .data = NULL,      /* 2nd arg of func */
  82         .help_str = "close the application",
  83         .tokens = {        /* token list, NULL terminated */
  84                 (void *)&cmd_quit_quit,
  85                 NULL,
  86         },
  87 };
  88
  89 /* *** VM operations *** */
  90
  91 struct cmd_set_cpu_freq_result {
  92         cmdline_fixed_string_t set_cpu_freq;
  93         uint8_t lcore_id;
  94         cmdline_fixed_string_t cmd;
  95 };
  96
  97 static void
  98 cmd_set_cpu_freq_parsed(void *parsed_result, struct cmdline *cl,
  99                        __attribute__((unused)) void *data)
 100 {
 101         int ret = -1;
 102         struct cmd_set_cpu_freq_result *res = parsed_result;
 103
 104         if (!strcmp(res->cmd , "up"))
 105                 ret = rte_power_freq_up(res->lcore_id);
 106         else if (!strcmp(res->cmd , "down"))
 107                 ret = rte_power_freq_down(res->lcore_id);
 108         else if (!strcmp(res->cmd , "min"))
 109                 ret = rte_power_freq_min(res->lcore_id);
 110         else if (!strcmp(res->cmd , "max"))
 111                 ret = rte_power_freq_max(res->lcore_id);
 112         if (ret != 1)
 113                 cmdline_printf(cl, "Error sending message: %s\n", strerror(ret));
 114 }
 115
 116 cmdline_parse_token_string_t cmd_set_cpu_freq =
 117         TOKEN_STRING_INITIALIZER(struct cmd_set_cpu_freq_result,
 118                         set_cpu_freq, "set_cpu_freq");
 119 cmdline_parse_token_string_t cmd_set_cpu_freq_core_num =
 120         TOKEN_NUM_INITIALIZER(struct cmd_set_cpu_freq_result,
 121                         lcore_id, UINT8);
 122 cmdline_parse_token_string_t cmd_set_cpu_freq_cmd_cmd =
 123         TOKEN_STRING_INITIALIZER(struct cmd_set_cpu_freq_result,
 124                         cmd, "up#down#min#max");
 125
 126 cmdline_parse_inst_t cmd_set_cpu_freq_set = {
 127         .f = cmd_set_cpu_freq_parsed,
 128         .data = NULL,
 129         .help_str = "set_cpu_freq <core_num> <up|down|min|max>, Set the current "
 130                         "frequency for the specified core by scaling up/down/min/max",
 131         .tokens = {
 132                 (void *)&cmd_set_cpu_freq,
 133                 (void *)&cmd_set_cpu_freq_core_num,
 134                 (void *)&cmd_set_cpu_freq_cmd_cmd,
 135                 NULL,
 136         },
 137 };
 138
 139 cmdline_parse_ctx_t main_ctx[] = {
 140                 (cmdline_parse_inst_t *)&cmd_quit,
 141                 (cmdline_parse_inst_t *)&cmd_set_cpu_freq_set,
 142                 NULL,
 143 };
 144
 145 void
 146 run_cli(__attribute__((unused)) void *arg)
 147 {
 148         struct cmdline *cl;
 149
 150         cl = cmdline_stdin_new(main_ctx, "vmpower(guest)> ");
 151         if (cl == NULL)
 152                 return;
 153
 154         cmdline_interact(cl);
 155         cmdline_stdin_exit(cl);
 156 }