src/gallium/auxiliary/hud/hud_sensors_temp.c

   1 /**************************************************************************
   2  *
   3  * Copyright (C) 2016 Steven Toth <stoth@kernellabs.com>
   4  * Copyright (C) 2016 Zodiac Inflight Innovations
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 #if HAVE_LIBSENSORS
  30 /* Purpose: Extract lm-sensors data, expose temperature, power, voltage. */
  31
  32 #include "hud/hud_private.h"
  33 #include "util/list.h"
  34 #include "os/os_time.h"
  35 #include "util/u_memory.h"
  36 #include <stdio.h>
  37 #include <unistd.h>
  38 #include <dirent.h>
  39 #include <stdlib.h>
  40 #include <unistd.h>
  41 #include <inttypes.h>
  42 #include <sys/types.h>
  43 #include <sys/stat.h>
  44 #include <unistd.h>
  45 #include <sensors/sensors.h>
  46
  47 /* TODO: We don't handle dynamic sensor discovery / arrival or removal.
  48  * Static globals specific to this HUD category.
  49  */
  50 static int gsensors_temp_count = 0;
  51 static struct list_head gsensors_temp_list;
  52
  53 struct sensors_temp_info
  54 {
  55    struct list_head list;
  56
  57    /* Combined chip and feature name, human readable. */
  58    char name[64];
  59
  60    /* The type of measurement, critical or current. */
  61    unsigned int mode;
  62
  63    uint64_t last_time;
  64
  65    char chipname[64];
  66    char featurename[128];
  67
  68    sensors_chip_name *chip;
  69    const sensors_feature *feature;
  70    double current, min, max, critical;
  71 };
  72
  73 static double
  74 get_value(const sensors_chip_name *name, const sensors_subfeature *sub)
  75 {
  76    double val;
  77    int err;
  78
  79    err = sensors_get_value(name, sub->number, &val);
  80    if (err) {
  81       fprintf(stderr, "ERROR: Can't get value of subfeature %s\n", sub->name);
  82       val = 0;
  83    }
  84    return val;
  85 }
  86
  87 static void
  88 get_sensor_values(struct sensors_temp_info *sti)
  89 {
  90    const sensors_subfeature *sf;
  91
  92    switch(sti->mode) {
  93    case SENSORS_VOLTAGE_CURRENT:
  94       sf = sensors_get_subfeature(sti->chip, sti->feature,
  95                                   SENSORS_SUBFEATURE_IN_INPUT);
  96       if (sf)
  97          sti->current = get_value(sti->chip, sf);
  98       break;
  99    case SENSORS_CURRENT_CURRENT:
 100       sf = sensors_get_subfeature(sti->chip, sti->feature,
 101                                   SENSORS_SUBFEATURE_CURR_INPUT);
 102       if (sf) {
 103          /* Sensors API returns in AMPs, even though driver is reporting mA,
 104           * convert back to mA */
 105          sti->current = get_value(sti->chip, sf) * 1000;
 106       }
 107      break;
 108    case SENSORS_TEMP_CURRENT:
 109       sf = sensors_get_subfeature(sti->chip, sti->feature,
 110                                   SENSORS_SUBFEATURE_TEMP_INPUT);
 111       if (sf)
 112          sti->current = get_value(sti->chip, sf);
 113       break;
 114    case SENSORS_TEMP_CRITICAL:
 115       sf = sensors_get_subfeature(sti->chip, sti->feature,
 116                                   SENSORS_SUBFEATURE_TEMP_CRIT);
 117       if (sf)
 118          sti->critical = get_value(sti->chip, sf);
 119       break;
 120    case SENSORS_POWER_CURRENT:
 121       sf = sensors_get_subfeature(sti->chip, sti->feature,
 122                                   SENSORS_SUBFEATURE_POWER_INPUT);
 123       if (sf) {
 124          /* Sensors API returns in WATTs, even though driver is reporting mW,
 125           * convert back to mW */
 126          sti->current = get_value(sti->chip, sf) * 1000;
 127       }
 128       break;
 129    }
 130
 131    sf = sensors_get_subfeature(sti->chip, sti->feature,
 132                                SENSORS_SUBFEATURE_TEMP_MIN);
 133    if (sf)
 134       sti->min = get_value(sti->chip, sf);
 135
 136    sf = sensors_get_subfeature(sti->chip, sti->feature,
 137                                SENSORS_SUBFEATURE_TEMP_MAX);
 138    if (sf)
 139       sti->max = get_value(sti->chip, sf);
 140 }
 141
 142 static struct sensors_temp_info *
 143 find_sti_by_name(const char *n, unsigned int mode)
 144 {
 145    list_for_each_entry(struct sensors_temp_info, sti, &gsensors_temp_list, list) {
 146       if (sti->mode != mode)
 147          continue;
 148       if (strcasecmp(sti->name, n) == 0)
 149          return sti;
 150    }
 151    return 0;
 152 }
 153
 154 static void
 155 query_sti_load(struct hud_graph *gr)
 156 {
 157    struct sensors_temp_info *sti = gr->query_data;
 158    uint64_t now = os_time_get();
 159
 160    if (sti->last_time) {
 161       if (sti->last_time + gr->pane->period <= now) {
 162          get_sensor_values(sti);
 163
 164          switch (sti->mode) {
 165          case SENSORS_TEMP_CURRENT:
 166             hud_graph_add_value(gr, (uint64_t) sti->current);
 167             break;
 168          case SENSORS_TEMP_CRITICAL:
 169             hud_graph_add_value(gr, (uint64_t) sti->critical);
 170             break;
 171          case SENSORS_VOLTAGE_CURRENT:
 172             hud_graph_add_value(gr, (uint64_t)(sti->current * 1000));
 173             break;
 174          case SENSORS_CURRENT_CURRENT:
 175             hud_graph_add_value(gr, (uint64_t) sti->current);
 176             break;
 177          case SENSORS_POWER_CURRENT:
 178             hud_graph_add_value(gr, (uint64_t) sti->current);
 179             break;
 180          }
 181
 182          sti->last_time = now;
 183       }
 184    }
 185    else {
 186       /* initialize */
 187       get_sensor_values(sti);
 188       sti->last_time = now;
 189    }
 190 }
 191
 192 /**
 193   * Create and initialize a new object for a specific sensor interface dev.
 194   * \param  pane  parent context.
 195   * \param  dev_name  device name, EG. 'coretemp-isa-0000.Core 1'
 196   * \param  mode  query type (NIC_DIRECTION_RX/WR/RSSI) statistics.
 197   */
 198 void
 199 hud_sensors_temp_graph_install(struct hud_pane *pane, const char *dev_name,
 200                                unsigned int mode)
 201 {
 202    struct hud_graph *gr;
 203    struct sensors_temp_info *sti;
 204
 205    int num_devs = hud_get_num_sensors(0);
 206    if (num_devs <= 0)
 207       return;
 208
 209    sti = find_sti_by_name(dev_name, mode);
 210    if (!sti)
 211       return;
 212
 213    gr = CALLOC_STRUCT(hud_graph);
 214    if (!gr)
 215       return;
 216
 217    snprintf(gr->name, sizeof(gr->name), "%.6s..%s (%s)",
 218            sti->chipname,
 219            sti->featurename,
 220            sti->mode == SENSORS_VOLTAGE_CURRENT ? "Volts" :
 221            sti->mode == SENSORS_CURRENT_CURRENT ? "Amps" :
 222            sti->mode == SENSORS_TEMP_CURRENT ? "Curr" :
 223            sti->mode == SENSORS_POWER_CURRENT ? "Pow" :
 224            sti->mode == SENSORS_TEMP_CRITICAL ? "Crit" : "Unkn");
 225
 226    gr->query_data = sti;
 227    gr->query_new_value = query_sti_load;
 228
 229    hud_pane_add_graph(pane, gr);
 230    switch (sti->mode) {
 231    case SENSORS_TEMP_CURRENT:
 232    case SENSORS_TEMP_CRITICAL:
 233       hud_pane_set_max_value(pane, 120);
 234       break;
 235    case SENSORS_VOLTAGE_CURRENT:
 236       hud_pane_set_max_value(pane, 12);
 237       break;
 238    case SENSORS_CURRENT_CURRENT:
 239       hud_pane_set_max_value(pane, 5000);
 240       break;
 241    case SENSORS_POWER_CURRENT:
 242       hud_pane_set_max_value(pane, 5000 /* mW */);
 243       break;
 244    }
 245 }
 246
 247 static void
 248 create_object(const char *chipname, const char *featurename,
 249              const sensors_chip_name *chip, const sensors_feature *feature,
 250              int mode)
 251 {
 252    struct sensors_temp_info *sti = CALLOC_STRUCT(sensors_temp_info);
 253
 254    sti->mode = mode;
 255    sti->chip = (sensors_chip_name *) chip;
 256    sti->feature = feature;
 257    strcpy(sti->chipname, chipname);
 258    strcpy(sti->featurename, featurename);
 259    snprintf(sti->name, sizeof(sti->name), "%s.%s", sti->chipname,
 260       sti->featurename);
 261
 262    list_addtail(&sti->list, &gsensors_temp_list);
 263    gsensors_temp_count++;
 264 }
 265
 266 static void
 267 build_sensor_list(void)
 268 {
 269    const sensors_chip_name *chip;
 270    const sensors_chip_name *match = 0;
 271    const sensors_feature *feature;
 272    int chip_nr = 0;
 273
 274    char name[256];
 275    while ((chip = sensors_get_detected_chips(match, &chip_nr))) {
 276       sensors_snprintf_chip_name(name, sizeof(name), chip);
 277
 278       /* Get all features and filter accordingly. */
 279       int fnr = 0;
 280       while ((feature = sensors_get_features(chip, &fnr))) {
 281          char *featurename = sensors_get_label(chip, feature);
 282          if (!featurename)
 283             continue;
 284
 285          /* Create a 'current' and 'critical' object pair.
 286           * Ignore sensor if its not temperature based.
 287           */
 288          switch(feature->type) {
 289          case SENSORS_FEATURE_TEMP:
 290             create_object(name, featurename, chip, feature,
 291                           SENSORS_TEMP_CURRENT);
 292             create_object(name, featurename, chip, feature,
 293                           SENSORS_TEMP_CRITICAL);
 294             break;
 295          case SENSORS_FEATURE_IN:
 296             create_object(name, featurename, chip, feature,
 297                           SENSORS_VOLTAGE_CURRENT);
 298             break;
 299          case SENSORS_FEATURE_CURR:
 300             create_object(name, featurename, chip, feature,
 301                           SENSORS_CURRENT_CURRENT);
 302             break;
 303          case SENSORS_FEATURE_POWER:
 304             create_object(name, featurename, chip, feature,
 305                           SENSORS_POWER_CURRENT);
 306             break;
 307          default:
 308             break;
 309          }
 310          free(featurename);
 311       }
 312    }
 313 }
 314
 315 /**
 316   * Initialize internal object arrays and display lmsensors HUD help.
 317   * \param  displayhelp  true if the list of detected devices should be
 318                          displayed on the console.
 319   * \return  number of detected lmsensor devices.
 320   */
 321 int
 322 hud_get_num_sensors(bool displayhelp)
 323 {
 324    /* Return the number of sensors detected. */
 325    if (gsensors_temp_count)
 326       return gsensors_temp_count;
 327
 328    int ret = sensors_init(NULL);
 329    if (ret)
 330       return 0;
 331
 332    list_inithead(&gsensors_temp_list);
 333
 334    /* Scan /sys/block, for every object type we support, create and
 335     * persist an object to represent its different statistics.
 336     */
 337    build_sensor_list();
 338
 339    if (displayhelp) {
 340       list_for_each_entry(struct sensors_temp_info, sti, &gsensors_temp_list, list) {
 341          char line[64];
 342          switch (sti->mode) {
 343          case SENSORS_TEMP_CURRENT:
 344             snprintf(line, sizeof(line), "    sensors_temp_cu-%s", sti->name);
 345             break;
 346          case SENSORS_TEMP_CRITICAL:
 347             snprintf(line, sizeof(line), "    sensors_temp_cr-%s", sti->name);
 348             break;
 349          case SENSORS_VOLTAGE_CURRENT:
 350             snprintf(line, sizeof(line), "    sensors_volt_cu-%s", sti->name);
 351             break;
 352          case SENSORS_CURRENT_CURRENT:
 353             snprintf(line, sizeof(line), "    sensors_curr_cu-%s", sti->name);
 354             break;
 355          case SENSORS_POWER_CURRENT:
 356             snprintf(line, sizeof(line), "    sensors_pow_cu-%s", sti->name);
 357             break;
 358          }
 359
 360          puts(line);
 361       }
 362    }
 363
 364    return gsensors_temp_count;
 365 }
 366
 367 #endif /* HAVE_LIBSENSORS */