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_log.h>
  47 #include <rte_lcore.h>
  48
  49 #include <rte_power.h>
  50
  51 #include "vm_power_cli_guest.h"
  52
  53
  54 #define CHANNEL_PATH "/dev/virtio-ports/virtio.serial.port.poweragent"
  55
  56
  57 #define RTE_LOGTYPE_GUEST_CHANNEL RTE_LOGTYPE_USER1
  58
  59 struct cmd_quit_result {
  60         cmdline_fixed_string_t quit;
  61 };
  62
  63 static void cmd_quit_parsed(__attribute__((unused)) void *parsed_result,
  64                                 __attribute__((unused)) struct cmdline *cl,
  65                             __attribute__((unused)) void *data)
  66 {
  67         unsigned lcore_id;
  68
  69         RTE_LCORE_FOREACH(lcore_id) {
  70                 rte_power_exit(lcore_id);
  71         }
  72         cmdline_quit(cl);
  73 }
  74
  75 cmdline_parse_token_string_t cmd_quit_quit =
  76         TOKEN_STRING_INITIALIZER(struct cmd_quit_result, quit, "quit");
  77
  78 cmdline_parse_inst_t cmd_quit = {
  79         .f = cmd_quit_parsed,  /* function to call */
  80         .data = NULL,      /* 2nd arg of func */
  81         .help_str = "close the application",
  82         .tokens = {        /* token list, NULL terminated */
  83                 (void *)&cmd_quit_quit,
  84                 NULL,
  85         },
  86 };
  87
  88 /* *** VM operations *** */
  89
  90 struct cmd_set_cpu_freq_result {
  91         cmdline_fixed_string_t set_cpu_freq;
  92         uint8_t lcore_id;
  93         cmdline_fixed_string_t cmd;
  94 };
  95
  96 static void
  97 cmd_set_cpu_freq_parsed(void *parsed_result, struct cmdline *cl,
  98                        __attribute__((unused)) void *data)
  99 {
 100         int ret = -1;
 101         struct cmd_set_cpu_freq_result *res = parsed_result;
 102
 103         if (!strcmp(res->cmd , "up"))
 104                 ret = rte_power_freq_up(res->lcore_id);
 105         else if (!strcmp(res->cmd , "down"))
 106                 ret = rte_power_freq_down(res->lcore_id);
 107         else if (!strcmp(res->cmd , "min"))
 108                 ret = rte_power_freq_min(res->lcore_id);
 109         else if (!strcmp(res->cmd , "max"))
 110                 ret = rte_power_freq_max(res->lcore_id);
 111         if (ret != 1)
 112                 cmdline_printf(cl, "Error sending message: %s\n", strerror(ret));
 113 }
 114
 115 cmdline_parse_token_string_t cmd_set_cpu_freq =
 116         TOKEN_STRING_INITIALIZER(struct cmd_set_cpu_freq_result,
 117                         set_cpu_freq, "set_cpu_freq");
 118 cmdline_parse_token_string_t cmd_set_cpu_freq_core_num =
 119         TOKEN_NUM_INITIALIZER(struct cmd_set_cpu_freq_result,
 120                         lcore_id, UINT8);
 121 cmdline_parse_token_string_t cmd_set_cpu_freq_cmd_cmd =
 122         TOKEN_STRING_INITIALIZER(struct cmd_set_cpu_freq_result,
 123                         cmd, "up#down#min#max");
 124
 125 cmdline_parse_inst_t cmd_set_cpu_freq_set = {
 126         .f = cmd_set_cpu_freq_parsed,
 127         .data = NULL,
 128         .help_str = "set_cpu_freq <core_num> <up|down|min|max>, Set the current "
 129                         "frequency for the specified core by scaling up/down/min/max",
 130         .tokens = {
 131                 (void *)&cmd_set_cpu_freq,
 132                 (void *)&cmd_set_cpu_freq_core_num,
 133                 (void *)&cmd_set_cpu_freq_cmd_cmd,
 134                 NULL,
 135         },
 136 };
 137
 138 cmdline_parse_ctx_t main_ctx[] = {
 139                 (cmdline_parse_inst_t *)&cmd_quit,
 140                 (cmdline_parse_inst_t *)&cmd_set_cpu_freq_set,
 141                 NULL,
 142 };
 143
 144 void
 145 run_cli(__attribute__((unused)) void *arg)
 146 {
 147         struct cmdline *cl;
 148
 149         cl = cmdline_stdin_new(main_ctx, "vmpower(guest)> ");
 150         if (cl == NULL)
 151                 return;
 152
 153         cmdline_interact(cl);
 154         cmdline_stdin_exit(cl);
 155 }