/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (C) 2019 embedded brains GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <rtems/score/smpimpl.h>
#include <rtems/score/atomic.h>
#include <rtems/score/threaddispatch.h>
#include <rtems/sysinit.h>
#include <rtems.h>
#include <string.h>
#include <t.h>
#include <tmacros.h>
#define CPU_COUNT 32
const char rtems_test_name[] = "SMPMULTICAST 1";
static const T_config config = {
.name = "SMPMultiCast",
.putchar = T_putchar_default,
.verbosity = T_VERBOSE,
.now = T_now
};
typedef struct {
Atomic_Uint id[CPU_COUNT];
} test_context;
static test_context test_instance;
static void multicast_action_irq_disabled(
const Processor_mask *targets,
SMP_Action_handler handler,
void *arg
)
{
rtems_interrupt_level level;
rtems_interrupt_local_disable(level);
_SMP_Multicast_action(targets, handler, arg);
rtems_interrupt_local_enable(level);
}
static void multicast_action_dispatch_disabled(
const Processor_mask *targets,
SMP_Action_handler handler,
void *arg
)
{
Per_CPU_Control *cpu_self;
cpu_self = _Thread_Dispatch_disable();
_SMP_Multicast_action(targets, handler, arg);
_Thread_Dispatch_enable(cpu_self);
}
static void action(void *arg)
{
test_context *ctx;
uint32_t self;
unsigned expected;
bool success;
ctx = arg;
self = rtems_scheduler_get_processor();
expected = 0;
success = _Atomic_Compare_exchange_uint(
&ctx->id[self],
&expected,
self + 1,
ATOMIC_ORDER_RELAXED,
ATOMIC_ORDER_RELAXED
);
T_quiet_true(success, "set CPU identifier failed");
}
static void test_unicast(
test_context *ctx,
void (*multicast_action)(const Processor_mask *, SMP_Action_handler, void *),
bool before_multitasking
)
{
uint32_t step;
uint32_t i;
uint32_t n;
uint32_t self;
T_plan(1);
step = 0;
self = rtems_scheduler_get_processor();
n = rtems_scheduler_get_processor_maximum();
for (i = 0; i < n; ++i) {
Processor_mask cpus;
uint32_t j;
memset(ctx, 0, sizeof(*ctx));
_Processor_mask_Zero(&cpus);
_Processor_mask_Set(&cpus, i);
(*multicast_action)(&cpus, action, ctx);
for (j = 0; j < n; ++j) {
unsigned id;
++step;
id = _Atomic_Load_uint(&ctx->id[j], ATOMIC_ORDER_RELAXED);
if (before_multitasking) {
if (j == self) {
T_quiet_eq_uint(j + 1, id);
} else {
T_quiet_eq_uint(0, id);
}
} else {
if (j == i) {
T_quiet_eq_uint(j + 1, id);
} else {
T_quiet_eq_uint(0, id);
}
}
}
}
T_step_eq_u32(0, step, n * n);
}
static void test_broadcast(
test_context *ctx,
void (*multicast_action)(const Processor_mask *, SMP_Action_handler, void *),
bool before_multitasking
)
{
uint32_t step;
uint32_t i;
uint32_t n;
uint32_t self;
T_plan(1);
step = 0;
self = rtems_scheduler_get_processor();
n = rtems_scheduler_get_processor_maximum();
for (i = 0; i < n; ++i) {
uint32_t j;
memset(ctx, 0, sizeof(*ctx));
(*multicast_action)(NULL, action, ctx);
for (j = 0; j < n; ++j) {
unsigned id;
++step;
id = _Atomic_Load_uint(&ctx->id[j], ATOMIC_ORDER_RELAXED);
if (before_multitasking) {
if (j == self) {
T_quiet_eq_uint(j + 1, id);
} else {
T_quiet_eq_uint(0, id);
}
} else {
T_quiet_eq_uint(j + 1, id);
}
}
}
T_step_eq_u32(0, step, n * n);
}
static void test_before_multitasking(void)
{
test_context *ctx;
ctx = &test_instance;
T_case_begin("UnicastBeforeMultitasking", NULL);
test_unicast(ctx, _SMP_Multicast_action, true);
T_case_end();
T_case_begin("UnicastBeforeMultitaskingIRQDisabled", NULL);
test_unicast(ctx, multicast_action_irq_disabled, true);
T_case_end();
T_case_begin("UnicastBeforeMultitaskingDispatchDisabled", NULL);
test_unicast(ctx, multicast_action_dispatch_disabled, true);
T_case_end();
T_case_begin("BroadcastBeforeMultitasking", NULL);
test_broadcast(ctx, _SMP_Multicast_action, true);
T_case_end();
T_case_begin("BroadcastBeforeMultitaskingIRQDisabled", NULL);
test_broadcast(ctx, multicast_action_irq_disabled, true);
T_case_end();
T_case_begin("BroadcastBeforeMultitaskingDispatchDisabled", NULL);
test_broadcast(ctx, multicast_action_dispatch_disabled, true);
T_case_end();
}
static void after_drivers(void)
{
TEST_BEGIN();
T_run_initialize(&config);
test_before_multitasking();
}
RTEMS_SYSINIT_ITEM(
after_drivers,
RTEMS_SYSINIT_DEVICE_DRIVERS,
RTEMS_SYSINIT_ORDER_LAST
);
static void Init(rtems_task_argument arg)
{
test_context *ctx;
bool ok;
ctx = &test_instance;
T_case_begin("UnicastDuringMultitasking", NULL);
test_unicast(ctx, _SMP_Multicast_action, false);
T_case_end();
T_case_begin("UnicastDuringMultitaskingIRQDisabled", NULL);
test_unicast(ctx, multicast_action_irq_disabled, false);
T_case_end();
T_case_begin("UnicastDuringMultitaskingDispatchDisabled", NULL);
test_unicast(ctx, multicast_action_dispatch_disabled, false);
T_case_end();
T_case_begin("BroadcastDuringMultitasking", NULL);
test_broadcast(ctx, _SMP_Multicast_action, false);
T_case_end();
T_case_begin("BroadcastDuringMultitaskingIRQDisabled", NULL);
test_broadcast(ctx, multicast_action_irq_disabled, false);
T_case_end();
T_case_begin("BroadcastDuringMultitaskingDispatchDisabled", NULL);
test_broadcast(ctx, multicast_action_dispatch_disabled, false);
T_case_end();
ok = T_run_finalize();
rtems_test_assert(ok);
TEST_END();
rtems_test_exit(0);
}
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
#define CONFIGURE_MAXIMUM_TASKS 1
#define CONFIGURE_MAXIMUM_PROCESSORS CPU_COUNT
#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#define CONFIGURE_INIT
#include <rtems/confdefs.h>
