lib/igt_power.h

   1 /*
   2  * Copyright © 2019 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  */
  24
  25 #ifndef IGT_POWER_H
  26 #define IGT_POWER_H
  27
  28 #include <stdbool.h>
  29 #include <stdint.h>
  30
  31 struct rapl {
  32         uint64_t power, type;
  33         double scale;
  34         int fd;
  35 };
  36
  37 struct power_sample {
  38         uint64_t energy;
  39         uint64_t time;
  40 };
  41
  42 struct igt_power {
  43         struct rapl rapl;
  44         int hwmon_fd;
  45         int bat_fd;
  46 };
  47
  48 int igt_power_open(int i915, struct igt_power *p, const char *domain);
  49 void igt_power_close(struct igt_power *p);
  50
  51 int igt_power_bat_open(struct igt_power *p, int index);
  52
  53 static inline bool igt_power_valid(struct igt_power *p)
  54 {
  55         return p->rapl.fd >= 0 || p->hwmon_fd >= 0 || p->bat_fd >= 0;
  56 }
  57
  58 void igt_power_get_energy(struct igt_power *p, struct power_sample *s);
  59
  60 double igt_power_get_mJ(const struct igt_power *power,
  61                         const struct power_sample *p0,
  62                         const struct power_sample *p1);
  63 double igt_power_get_mW(const struct igt_power *power,
  64                         const struct power_sample *p0,
  65                         const struct power_sample *p1);
  66 double igt_power_get_s(const struct power_sample *p0,
  67                        const struct power_sample *p1);
  68 #endif /* IGT_POWER_H */