// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef ZIRCON_SYSCALLS_SYSTEM_H_
#define ZIRCON_SYSCALLS_SYSTEM_H_

#include <zircon/types.h>

__BEGIN_CDECLS

// Commands used by zx_system_powerctl()
#define ZX_SYSTEM_POWERCTL_ENABLE_ALL_CPUS 1u
#define ZX_SYSTEM_POWERCTL_DISABLE_ALL_CPUS_BUT_PRIMARY 2u
#define ZX_SYSTEM_POWERCTL_ACPI_TRANSITION_S_STATE 3u
#define ZX_SYSTEM_POWERCTL_X86_SET_PKG_PL1 4u
#define ZX_SYSTEM_POWERCTL_REBOOT 5u
#define ZX_SYSTEM_POWERCTL_REBOOT_BOOTLOADER 6u
#define ZX_SYSTEM_POWERCTL_REBOOT_RECOVERY 7u
#define ZX_SYSTEM_POWERCTL_SHUTDOWN 8u
#define ZX_SYSTEM_POWERCTL_ACK_KERNEL_INITIATED_REBOOT 9u

typedef struct zx_system_powerctl_arg {
  union {
    struct {
      struct {
        uint8_t target_s_state;  // Value between 1 and 5 indicating which S-state
        uint8_t sleep_type_a;    // Value from ACPI VM (SLP_TYPa)
        uint8_t sleep_type_b;    // Value from ACPI VM (SLP_TYPb)
      } acpi_transition_s_state;
      uint8_t padding1[9];
    };
    struct {
      uint32_t power_limit;  // PL1 value in milliwatts
      uint32_t time_window;  // PL1 time window in microseconds
      uint8_t clamp;         // PL1 clamping enable
      uint8_t enable;        // PL1 enable
      uint8_t padding2[2];
    } x86_power_limit;
  };
} zx_system_powerctl_arg_t;

// Topics used by zx_system_{get,set}_performance_info():
#define ZX_CPU_PERF_SCALE ((uint32_t)1u)
#define ZX_CPU_DEFAULT_PERF_SCALE ((uint32_t)2u)

typedef struct zx_cpu_performance_scale {
  uint32_t integral_part;
  uint32_t fractional_part;
} zx_cpu_performance_scale_t;

typedef struct zx_cpu_performance_info {
  uint32_t logical_cpu_number;
  zx_cpu_performance_scale_t performance_scale;
} zx_cpu_performance_info_t;

__END_CDECLS

#endif  // ZIRCON_SYSCALLS_SYSTEM_H_