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-rw-r--r--tools/thermal/tmon/tmon.c352
1 files changed, 352 insertions, 0 deletions
diff --git a/tools/thermal/tmon/tmon.c b/tools/thermal/tmon/tmon.c
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+++ b/tools/thermal/tmon/tmon.c
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+/*
+ * tmon.c Thermal Monitor (TMON) main function and entry point
+ *
+ * Copyright (C) 2012 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 or later as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Author: Jacob Pan <jacob.jun.pan@linux.intel.com>
+ *
+ */
+
+#include <getopt.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <ncurses.h>
+#include <ctype.h>
+#include <time.h>
+#include <signal.h>
+#include <limits.h>
+#include <sys/time.h>
+#include <pthread.h>
+#include <math.h>
+#include <stdarg.h>
+#include <syslog.h>
+
+#include "tmon.h"
+
+unsigned long ticktime = 1; /* seconds */
+unsigned long no_control = 1; /* monitoring only or use cooling device for
+ * temperature control.
+ */
+double time_elapsed = 0.0;
+unsigned long target_temp_user = 65; /* can be select by tui later */
+int dialogue_on;
+int tmon_exit;
+static short daemon_mode;
+static int logging; /* for recording thermal data to a file */
+static int debug_on;
+FILE *tmon_log;
+/*cooling device used for the PID controller */
+char ctrl_cdev[CDEV_NAME_SIZE] = "None";
+int target_thermal_zone; /* user selected target zone instance */
+static void start_daemon_mode(void);
+
+pthread_t event_tid;
+pthread_mutex_t input_lock;
+void usage()
+{
+ printf("Usage: tmon [OPTION...]\n");
+ printf(" -c, --control cooling device in control\n");
+ printf(" -d, --daemon run as daemon, no TUI\n");
+ printf(" -g, --debug debug message in syslog\n");
+ printf(" -h, --help show this help message\n");
+ printf(" -l, --log log data to /var/tmp/tmon.log\n");
+ printf(" -t, --time-interval sampling time interval, > 1 sec.\n");
+ printf(" -v, --version show version\n");
+ printf(" -z, --zone target thermal zone id\n");
+
+ exit(0);
+}
+
+void version()
+{
+ printf("TMON version %s\n", VERSION);
+ exit(EXIT_SUCCESS);
+}
+
+static void tmon_cleanup(void)
+{
+
+ syslog(LOG_INFO, "TMON exit cleanup\n");
+ fflush(stdout);
+ refresh();
+ if (tmon_log)
+ fclose(tmon_log);
+ if (event_tid) {
+ pthread_mutex_lock(&input_lock);
+ pthread_cancel(event_tid);
+ pthread_mutex_unlock(&input_lock);
+ pthread_mutex_destroy(&input_lock);
+ }
+ closelog();
+ /* relax control knobs, undo throttling */
+ set_ctrl_state(0);
+
+ keypad(stdscr, FALSE);
+ echo();
+ nocbreak();
+ close_windows();
+ endwin();
+ free_thermal_data();
+
+ exit(1);
+}
+
+
+static void tmon_sig_handler(int sig)
+{
+ syslog(LOG_INFO, "TMON caught signal %d\n", sig);
+ refresh();
+ switch (sig) {
+ case SIGTERM:
+ printf("sigterm, exit and clean up\n");
+ fflush(stdout);
+ break;
+ case SIGKILL:
+ printf("sigkill, exit and clean up\n");
+ fflush(stdout);
+ break;
+ case SIGINT:
+ printf("ctrl-c, exit and clean up\n");
+ fflush(stdout);
+ break;
+ default:
+ break;
+ }
+ tmon_exit = true;
+}
+
+
+static void start_syslog(void)
+{
+ if (debug_on)
+ setlogmask(LOG_UPTO(LOG_DEBUG));
+ else
+ setlogmask(LOG_UPTO(LOG_ERR));
+ openlog("tmon.log", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL0);
+ syslog(LOG_NOTICE, "TMON started by User %d", getuid());
+}
+
+static void prepare_logging(void)
+{
+ int i;
+
+ if (!logging)
+ return;
+ /* open local data log file */
+ tmon_log = fopen(TMON_LOG_FILE, "w+");
+ if (!tmon_log) {
+ syslog(LOG_ERR, "failed to open log file %s\n", TMON_LOG_FILE);
+ return;
+ }
+
+ fprintf(tmon_log, "#----------- THERMAL SYSTEM CONFIG -------------\n");
+ for (i = 0; i < ptdata.nr_tz_sensor; i++) {
+ char binding_str[33]; /* size of long + 1 */
+ int j;
+
+ memset(binding_str, 0, sizeof(binding_str));
+ for (j = 0; j < 32; j++)
+ binding_str[j] = (ptdata.tzi[i].cdev_binding & 1<<j) ?
+ '1' : '0';
+
+ fprintf(tmon_log, "#thermal zone %s%02d cdevs binding: %32s\n",
+ ptdata.tzi[i].type,
+ ptdata.tzi[i].instance,
+ binding_str);
+ for (j = 0; j < ptdata.tzi[i].nr_trip_pts; j++) {
+ fprintf(tmon_log, "#\tTP%02d type:%s, temp:%lu\n", j,
+ trip_type_name[ptdata.tzi[i].tp[j].type],
+ ptdata.tzi[i].tp[j].temp);
+ }
+
+ }
+
+ for (i = 0; i < ptdata.nr_cooling_dev; i++)
+ fprintf(tmon_log, "#cooling devices%02d: %s\n",
+ i, ptdata.cdi[i].type);
+
+ fprintf(tmon_log, "#---------- THERMAL DATA LOG STARTED -----------\n");
+ fprintf(tmon_log, "Samples TargetTemp ");
+ for (i = 0; i < ptdata.nr_tz_sensor; i++) {
+ fprintf(tmon_log, "%s%d ", ptdata.tzi[i].type,
+ ptdata.tzi[i].instance);
+ }
+ for (i = 0; i < ptdata.nr_cooling_dev; i++)
+ fprintf(tmon_log, "%s%d ", ptdata.cdi[i].type,
+ ptdata.cdi[i].instance);
+
+ fprintf(tmon_log, "\n");
+}
+
+static struct option opts[] = {
+ { "control", 1, NULL, 'c' },
+ { "daemon", 0, NULL, 'd' },
+ { "time-interval", 1, NULL, 't' },
+ { "log", 0, NULL, 'l' },
+ { "help", 0, NULL, 'h' },
+ { "version", 0, NULL, 'v' },
+ { "debug", 0, NULL, 'g' },
+ { 0, 0, NULL, 0 }
+};
+
+
+int main(int argc, char **argv)
+{
+ int err = 0;
+ int id2 = 0, c;
+ double yk = 0.0; /* controller output */
+ int target_tz_index;
+
+ if (geteuid() != 0) {
+ printf("TMON needs to be run as root\n");
+ exit(EXIT_FAILURE);
+ }
+
+ while ((c = getopt_long(argc, argv, "c:dlht:vgz:", opts, &id2)) != -1) {
+ switch (c) {
+ case 'c':
+ no_control = 0;
+ strncpy(ctrl_cdev, optarg, CDEV_NAME_SIZE);
+ break;
+ case 'd':
+ start_daemon_mode();
+ printf("Run TMON in daemon mode\n");
+ break;
+ case 't':
+ ticktime = strtod(optarg, NULL);
+ if (ticktime < 1)
+ ticktime = 1;
+ break;
+ case 'l':
+ printf("Logging data to /var/tmp/tmon.log\n");
+ logging = 1;
+ break;
+ case 'h':
+ usage();
+ break;
+ case 'v':
+ version();
+ break;
+ case 'g':
+ debug_on = 1;
+ break;
+ case 'z':
+ target_thermal_zone = strtod(optarg, NULL);
+ break;
+ default:
+ break;
+ }
+ }
+ if (pthread_mutex_init(&input_lock, NULL) != 0) {
+ fprintf(stderr, "\n mutex init failed, exit\n");
+ return 1;
+ }
+ start_syslog();
+ if (signal(SIGINT, tmon_sig_handler) == SIG_ERR)
+ syslog(LOG_DEBUG, "Cannot handle SIGINT\n");
+ if (signal(SIGTERM, tmon_sig_handler) == SIG_ERR)
+ syslog(LOG_DEBUG, "Cannot handle SIGINT\n");
+
+ if (probe_thermal_sysfs()) {
+ pthread_mutex_destroy(&input_lock);
+ closelog();
+ return -1;
+ }
+ initialize_curses();
+ setup_windows();
+ signal(SIGWINCH, resize_handler);
+ show_title_bar();
+ show_sensors_w();
+ show_cooling_device();
+ update_thermal_data();
+ show_data_w();
+ prepare_logging();
+ init_thermal_controller();
+
+ nodelay(stdscr, TRUE);
+ err = pthread_create(&event_tid, NULL, &handle_tui_events, NULL);
+ if (err != 0) {
+ printf("\ncan't create thread :[%s]", strerror(err));
+ tmon_cleanup();
+ exit(EXIT_FAILURE);
+ }
+
+ /* validate range of user selected target zone, default to the first
+ * instance if out of range
+ */
+ target_tz_index = zone_instance_to_index(target_thermal_zone);
+ if (target_tz_index < 0) {
+ target_thermal_zone = ptdata.tzi[0].instance;
+ syslog(LOG_ERR, "target zone is not found, default to %d\n",
+ target_thermal_zone);
+ }
+ while (1) {
+ sleep(ticktime);
+ show_title_bar();
+ show_sensors_w();
+ update_thermal_data();
+ if (!dialogue_on) {
+ show_data_w();
+ show_cooling_device();
+ }
+ cur_thermal_record++;
+ time_elapsed += ticktime;
+ controller_handler(trec[0].temp[target_tz_index] / 1000,
+ &yk);
+ trec[0].pid_out_pct = yk;
+ if (!dialogue_on)
+ show_control_w();
+ if (tmon_exit)
+ break;
+ }
+ tmon_cleanup();
+ return 0;
+}
+
+static void start_daemon_mode()
+{
+ daemon_mode = 1;
+ /* fork */
+ pid_t sid, pid = fork();
+ if (pid < 0) {
+ exit(EXIT_FAILURE);
+ } else if (pid > 0)
+ /* kill parent */
+ exit(EXIT_SUCCESS);
+
+ /* disable TUI, it may not be necessary, but saves some resource */
+ disable_tui();
+
+ /* change the file mode mask */
+ umask(0);
+
+ /* new SID for the daemon process */
+ sid = setsid();
+ if (sid < 0)
+ exit(EXIT_FAILURE);
+
+ /* change working directory */
+ if ((chdir("/")) < 0)
+ exit(EXIT_FAILURE);
+
+
+ sleep(10);
+
+ close(STDIN_FILENO);
+ close(STDOUT_FILENO);
+ close(STDERR_FILENO);
+
+}

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