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/*
* 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
#define TEST_INIT
#include <rtems/score/smpimpl.h>
#include <rtems/score/smpbarrier.h>
#include <rtems/counter.h>
#include <rtems.h>
#include <stdio.h>
#include "tmacros.h"
const char rtems_test_name[] = "SMPIPI 1";
#define CPU_COUNT 32
typedef struct {
uint32_t value;
uint32_t cache_line_separation[31];
} test_counter;
typedef struct {
test_counter counters[CPU_COUNT];
uint32_t copy_counters[CPU_COUNT];
SMP_barrier_Control barrier;
SMP_barrier_State main_barrier_state;
SMP_barrier_State worker_barrier_state;
} test_context;
static test_context test_instance = {
.barrier = SMP_BARRIER_CONTROL_INITIALIZER,
.main_barrier_state = SMP_BARRIER_STATE_INITIALIZER,
.worker_barrier_state = SMP_BARRIER_STATE_INITIALIZER
};
static void barrier(
test_context *ctx,
SMP_barrier_State *state
)
{
_SMP_barrier_Wait(&ctx->barrier, state, 2);
}
static void barrier_handler(Per_CPU_Control *cpu_self)
{
test_context *ctx = &test_instance;
uint32_t cpu_index_self = _Per_CPU_Get_index(cpu_self);
SMP_barrier_State *bs = &ctx->worker_barrier_state;
++ctx->counters[cpu_index_self].value;
/* (A) */
barrier(ctx, bs);
/* (B) */
barrier(ctx, bs);
/* (C) */
barrier(ctx, bs);
}
static void test_send_message_while_processing_a_message(
test_context *ctx
)
{
uint32_t cpu_count = rtems_get_processor_count();
uint32_t cpu_index_self = rtems_get_current_processor();
uint32_t cpu_index;
SMP_barrier_State *bs = &ctx->main_barrier_state;
_SMP_Set_test_message_handler(barrier_handler);
for (cpu_index = 0; cpu_index < cpu_count; ++cpu_index) {
if (cpu_index != cpu_index_self) {
_SMP_Send_message(cpu_index, SMP_MESSAGE_TEST);
/* (A) */
barrier(ctx, bs);
rtems_test_assert(ctx->counters[cpu_index].value == 1);
_SMP_Send_message(cpu_index, SMP_MESSAGE_TEST);
/* (B) */
barrier(ctx, bs);
rtems_test_assert(ctx->counters[cpu_index].value == 1);
/* (C) */
barrier(ctx, bs);
/* (A) */
barrier(ctx, bs);
rtems_test_assert(ctx->counters[cpu_index].value == 2);
/* (B) */
barrier(ctx, bs);
/* (C) */
barrier(ctx, bs);
ctx->counters[cpu_index].value = 0;
}
}
}
static void counter_handler(Per_CPU_Control *cpu_self)
{
test_context *ctx = &test_instance;
uint32_t cpu_index_self = _Per_CPU_Get_index(cpu_self);
++ctx->counters[cpu_index_self].value;
}
static void test_send_message_flood(
test_context *ctx
)
{
uint32_t cpu_count = rtems_get_processor_count();
uint32_t cpu_index_self = rtems_get_current_processor();
uint32_t cpu_index;
_SMP_Set_test_message_handler(counter_handler);
for (cpu_index = 0; cpu_index < cpu_count; ++cpu_index) {
uint32_t i;
/* Wait 1us so that all outstanding messages have been processed */
rtems_counter_delay_nanoseconds(1000000);
for (i = 0; i < cpu_count; ++i) {
if (i != cpu_index) {
ctx->copy_counters[i] = ctx->counters[i].value;
}
}
for (i = 0; i < 100000; ++i) {
_SMP_Send_message(cpu_index, SMP_MESSAGE_TEST);
}
for (i = 0; i < cpu_count; ++i) {
if (i != cpu_index) {
rtems_test_assert(ctx->copy_counters[i] == ctx->counters[i].value);
}
}
}
for (cpu_index = 0; cpu_index < cpu_count; ++cpu_index) {
rtems_test_assert(
_Processor_mask_Is_set(_SMP_Get_online_processors(), cpu_index)
);
printf(
"inter-processor interrupts for processor %"
PRIu32 "%s: %" PRIu32 "\n",
cpu_index,
cpu_index == cpu_index_self ? " (main)" : "",
ctx->counters[cpu_index].value
);
}
for (; cpu_index < CPU_COUNT; ++cpu_index) {
rtems_test_assert(
!_Processor_mask_Is_set(_SMP_Get_online_processors(), cpu_index)
);
}
}
static void test(void)
{
test_context *ctx = &test_instance;
test_send_message_while_processing_a_message(ctx);
test_send_message_flood(ctx);
}
static void Init(rtems_task_argument arg)
{
TEST_BEGIN();
test();
TEST_END();
rtems_test_exit(0);
}
#define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
#define CONFIGURE_MAXIMUM_PROCESSORS CPU_COUNT
#define CONFIGURE_MAXIMUM_TASKS 1
#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#define CONFIGURE_INIT
#include <rtems/confdefs.h>
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