// Copyright 2020 The ChromiumOS Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

syntax = "proto3";

package chromiumos.config.api;

option go_package = "go.chromium.org/chromiumos/config/go/api";

// Defines configuration settings for resourced.
// For more details, see:
// https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform2/resourced/README.md
//
// NEXT ID: 7
message ResourceConfig {
  // See https://www.kernel.org/doc/html/latest/admin-guide/pm/cpufreq.html
  message ConservativeGovernor {
    // TODO: Add conservative specific parameters.
  }

  message OndemandGovernor {
    uint32 powersave_bias = 1 [json_name = "powersave-bias"];

    // This field has a min of 2ms. If this field is set to 0 or unset,
    // resourced will not update the sampling_rate on the governor.
    uint32 sampling_rate_ms = 2 [json_name = "sampling-rate-ms"];
  }

  message PerformanceGovernor {
    // No parameter for the performance governor. The CPU frequency is set to
    // the highest within scalinng_max_freq.
  }

  message PowersaveGovernor {
    // No parameter for the powersave governor. The CPU frequency is set to the
    // lowest within scaling_min_freq.
  }

  message SchedutilGovernor {
    // TODO: Add schedutil specific parameters.
  }

  message UserspaceGovernor {
    // No parameter for the userspace governor. The user space can set CPU
    // frequency by writing to scaling_setspeed.
  }


  message Governor {
    oneof governor {
      ConservativeGovernor conservative = 2;
      OndemandGovernor ondemand = 1;
      PerformanceGovernor performance = 3;
      PowersaveGovernor powersave = 4;
      SchedutilGovernor schedutil = 5;
      UserspaceGovernor userspace = 6;
    }
  }

  message DefaultEpp {}

  message PerformanceEpp {}

  message BalancePerformanceEpp {}

  message BalancePowerEpp {}

  message PowerEpp {}

  message EnergyPerformancePreference {
    oneof epp {
      DefaultEpp default = 1;
      PerformanceEpp performance = 2;
      BalancePerformanceEpp balance_performance = 3 [json_name = "balance-performance"];
      BalancePowerEpp balance_power = 4 [json_name = "balance-power"];
      PowerEpp power = 5;
    }
  }

  message CpuOfflineSmallCore {
    // The minimum number of online threads the device must have. If not set,
    // resourced sets default to 2.
    uint32 min_active_threads = 1 [json_name = "min-active-threads"];
  }

  message CpuOfflineSMT {
    // The minimum number of online threads the device must have. If not set,
    // resourced sets default to 2.
    uint32 min_active_threads = 1 [json_name = "min-active-threads"];
  }

  message CpuOfflineHalf {
    // The minimum number of online threads the device must have. If not set,
    // resourced sets default to 2.
    uint32 min_active_threads = 1 [json_name = "min-active-threads"];
  }

  message CpuOfflinePreference {
    oneof cpu_offline {
      CpuOfflineSmallCore small_core = 1 [json_name = "small-core"];
      CpuOfflineSMT smt = 2;
      CpuOfflineHalf half = 3;
    }
  }

  message PowerPreferences {
    Governor governor = 1;
    EnergyPerformancePreference epp = 2;
    CpuOfflinePreference cpu_offline = 3 [json_name = "cpu-offline"];
    bool cpufreq_disable_boost = 4 [json_name = "cpufreq-disable-boost"];
  }

  message PowerSourcePreferences {
    // If more then one activity is enabled, the following priority list is used
    // to determine which settings to apply:
    //
    // 1) Battery saver
    // 2) Borealis gaming
    // 3) ARCVM gaming
    // 4) WebRTC
    // 5) Fullscreen Video
    // 6) VM boot
    //
    // Default will be applied when no activity is active.

    // PowerPreferences to apply at boot and when no other activity is active.
    PowerPreferences default_power_preferences = 1
        [json_name = "default-power-preferences"];

    // PowerPreferences to apply when RTC audio is active.
    PowerPreferences web_rtc_power_preferences = 2
        [json_name = "web-rtc-power-preferences"];

    // PowerPreferences to apply when full screen video is active.
    PowerPreferences fullscreen_video_power_preferences = 3
        [json_name = "fullscreen-power-preferences"];

    // PowerPreferences to apply when performance mode is active.
    PowerPreferences vm_boot_power_preferences = 4
        [json_name = "vm-boot-power-preferences"];

    // PowerPreferences to apply when playing a Borealis game.
    PowerPreferences borealis_gaming_power_preferences = 5
        [json_name = "borealis-gaming-power-preferences"];

    // PowerPreferences to apply when playing an ARCVM game.
    PowerPreferences arcvm_gaming_power_preferences = 6
        [json_name = "arcvm-gaming-power-preferences"];

    // PowerPreferences to apply when Battery Saver mode is on.
    PowerPreferences battery_saver_power_preferences = 7
        [json_name = "battery-saver-power-preferences"];
  }

  // Power Preferences to apply when the device is on AC power (Plugged-in).
  PowerSourcePreferences ac = 5;

  // Power Preferences to apply when the device is on DC power (Battery).
  PowerSourcePreferences dc = 6;
}