/*
 * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
 *
 *  embedded brains GmbH
 *  Dornierstr. 4
 *  82178 Puchheim
 *  Germany
 *  <rtems@embedded-brains.de>
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rtems.org/license/LICENSE.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "tmacros.h"

#include <rtems.h>
#include <rtems/score/percpu.h>
#include <rtems/score/smpimpl.h>
#include <rtems/score/smpbarrier.h>

#include <assert.h>
#include <stdlib.h>

const char rtems_test_name[] = "SMPFATAL 1";

#define MAX_CPUS 32

static uint32_t main_cpu;

static uint32_t other_cpu;

static SMP_barrier_Control barrier = SMP_BARRIER_CONTROL_INITIALIZER;

static void Init(rtems_task_argument arg)
{
  assert(0);
}

static void fatal_extension(
  rtems_fatal_source source,
  bool always_set_to_false,
  rtems_fatal_code code
)
{
  assert(!always_set_to_false);

  if (source == RTEMS_FATAL_SOURCE_SMP) {
    SMP_barrier_State barrier_state = SMP_BARRIER_STATE_INITIALIZER;
    uint32_t cpu_count = rtems_scheduler_get_processor_maximum();
    uint32_t self = rtems_scheduler_get_processor();

    if (self == other_cpu) {
      assert(code == SMP_FATAL_SHUTDOWN);
    } else {
      assert(code == SMP_FATAL_SHUTDOWN_RESPONSE);
    }

    _SMP_barrier_Wait(&barrier, &barrier_state, cpu_count);

    if (self == other_cpu) {
      uint32_t cpu;

      for (cpu = 0; cpu < cpu_count; ++cpu) {
        const Per_CPU_Control *per_cpu = _Per_CPU_Get_by_index( cpu );
        Per_CPU_State state = _Per_CPU_Get_state(per_cpu);

        assert(state == PER_CPU_STATE_SHUTDOWN);
      }

      for (cpu = cpu_count; cpu < MAX_CPUS; ++cpu) {
        const Per_CPU_Control *per_cpu = _Per_CPU_Get_by_index( cpu );
        Per_CPU_State state = _Per_CPU_Get_state(per_cpu);

        assert(state == PER_CPU_STATE_INITIAL);
      }

      TEST_END();
    } else {
      _SMP_barrier_Wait(&barrier, &barrier_state, cpu_count);
    }
  }
}

static void shutdown_handler(void *arg)
{
  _SMP_Request_shutdown();
  _SMP_Fatal(SMP_FATAL_SHUTDOWN);
}

static const Per_CPU_Job_context shutdown_context = {
  .handler = shutdown_handler
};

static Per_CPU_Job shutdown_job = {
  .context = &shutdown_context
};

static rtems_status_code test_driver_init(
  rtems_device_major_number major,
  rtems_device_minor_number minor,
  void *arg
)
{
  uint32_t self = rtems_scheduler_get_processor();
  uint32_t cpu_count = rtems_scheduler_get_processor_maximum();
  uint32_t cpu;

  TEST_BEGIN();

  assert(rtems_configuration_get_maximum_processors() == MAX_CPUS);

  main_cpu = self;
  other_cpu = (self + 1) % cpu_count;

  for (cpu = 0; cpu < MAX_CPUS; ++cpu) {
    const Per_CPU_Control *per_cpu = _Per_CPU_Get_by_index( cpu );
    Per_CPU_State state = _Per_CPU_Get_state(per_cpu);

    if (cpu == self) {
      assert(state == PER_CPU_STATE_INITIAL);
    } else if (cpu < cpu_count) {
      assert(
        state == PER_CPU_STATE_INITIAL
          || state == PER_CPU_STATE_READY_TO_START_MULTITASKING
      );
    } else {
      assert(state == PER_CPU_STATE_INITIAL);
    }
  }

  if (cpu_count > 1) {
    Per_CPU_Control *per_cpu = _Per_CPU_Get_by_index( other_cpu );

    _Per_CPU_Submit_job(per_cpu, &shutdown_job);
  } else {
    TEST_END();
    exit(0);
  }

  return RTEMS_SUCCESSFUL;
}

#define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER

#define CONFIGURE_APPLICATION_EXTRA_DRIVERS \
  { .initialization_entry = test_driver_init }

#define CONFIGURE_INITIAL_EXTENSIONS \
  { .fatal = fatal_extension }, \
  RTEMS_TEST_INITIAL_EXTENSION

#define CONFIGURE_MAXIMUM_PROCESSORS MAX_CPUS

#define CONFIGURE_MAXIMUM_TASKS 1

#define CONFIGURE_RTEMS_INIT_TASKS_TABLE

#define CONFIGURE_INIT

#include <rtems/confdefs.h>