tests/kernel/interrupt/src/direct_isr.c

/*
 * Copyright (c) 2021 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <ztest.h>
#include "interrupt_util.h"

/*
 * Other arch has already been tested in testcase of gen_isr_table,
 * so we only test x86 and arch posix here.
 * And x86_64 is also not support this kind of interrupt, we skip it.
 */
#if (defined(CONFIG_X86) && !defined(CONFIG_X86_64)) ||\
	defined(CONFIG_ARCH_POSIX)

#if defined(CONFIG_X86)

#define TEST_DIRECT_IRQ_LINE_1	3
#define TEST_DIRECT_IRQ_LINE_2	4

/* the vector got would be different when enable code coverage */
#if defined(CONFIG_COVERAGE)
#define TRIGGER_DIRECT_IRQ_LINE_1	34
#define TRIGGER_DIRECT_IRQ_LINE_2	35
#else
#define TRIGGER_DIRECT_IRQ_LINE_1	35
#define TRIGGER_DIRECT_IRQ_LINE_2	34
#endif

#define TEST_DIRECT_IRQ_PRIO	0

#elif defined(CONFIG_ARCH_POSIX)
#define TEST_DIRECT_IRQ_LINE_1	5
#define TEST_DIRECT_IRQ_LINE_2	6

#define TRIGGER_DIRECT_IRQ_LINE_1	TEST_DIRECT_IRQ_LINE_1
#define TRIGGER_DIRECT_IRQ_LINE_2	TEST_DIRECT_IRQ_LINE_2

#define TEST_DIRECT_IRQ_PRIO	1

#endif

volatile uint32_t direct_int_executed[2];

ISR_DIRECT_DECLARE(direct_isr1)
{
	direct_int_executed[0]++;

	return 0;
}

ISR_DIRECT_DECLARE(direct_isr2)
{
	direct_int_executed[1]++;

	return 1;
}

/**
 * @brief Test direct interrupt function
 *
 * @details validate direct interrupt works as expected.
 * - Register two direct interrupt at build time.
 * - Trigger interrupt and check if isr handler has executed or not.
 * - Also check irq_enable and irq_disable works.
 *
 * @ingroup kernel_interrupt_tests
 *
 * @see IRQ_DIRECT_CONNECT(), ISR_DIRECT_DECLARE()
 */
void test_direct_interrupt(void)
{
	int trig_vec1, trig_vec2;

	IRQ_DIRECT_CONNECT(TEST_DIRECT_IRQ_LINE_1, TEST_DIRECT_IRQ_PRIO, direct_isr1, 0);
	IRQ_DIRECT_CONNECT(TEST_DIRECT_IRQ_LINE_2, TEST_DIRECT_IRQ_PRIO, direct_isr2, 0);

#if defined(CONFIG_X86)
	trig_vec1 = Z_IRQ_TO_INTERRUPT_VECTOR(TEST_DIRECT_IRQ_LINE_1);
	trig_vec2 = Z_IRQ_TO_INTERRUPT_VECTOR(TEST_DIRECT_IRQ_LINE_2);
#elif defined(CONFIG_ARCH_POSIX)
	trig_vec1 = TRIGGER_DIRECT_IRQ_LINE_1;
	trig_vec2 = TRIGGER_DIRECT_IRQ_LINE_2;
#endif
	TC_PRINT("irq(%d)=vector(%d)\n", TEST_DIRECT_IRQ_LINE_1, trig_vec1);
	TC_PRINT("irq(%d)=vector(%d)\n", TEST_DIRECT_IRQ_LINE_2, trig_vec2);

	/* verify the target triggering vector is correct */
	zassert_equal(trig_vec1, TRIGGER_DIRECT_IRQ_LINE_1,
			"vector %d mismatch we specified to trigger %d",
			trig_vec1, TRIGGER_DIRECT_IRQ_LINE_1);

	zassert_equal(trig_vec2, TRIGGER_DIRECT_IRQ_LINE_2,
			"vector %d mismatch we specified to trigger %d",
			trig_vec2, TRIGGER_DIRECT_IRQ_LINE_2);

	irq_enable(TEST_DIRECT_IRQ_LINE_1);
	irq_enable(TEST_DIRECT_IRQ_LINE_2);

	zassert_true(direct_int_executed[0] == 0 &&
			direct_int_executed[1] == 0,
			"Both ISR should not execute");

	trigger_irq(TRIGGER_DIRECT_IRQ_LINE_1);

	zassert_true(direct_int_executed[0] == 1 &&
			direct_int_executed[1] == 0,
			"ISR1 should execute");

	trigger_irq(TRIGGER_DIRECT_IRQ_LINE_2);

	zassert_true(direct_int_executed[0] == 1 &&
			direct_int_executed[1] == 1,
			"Both ISR should execute");

	irq_disable(TEST_DIRECT_IRQ_LINE_1);
	irq_disable(TEST_DIRECT_IRQ_LINE_2);

	trigger_irq(TRIGGER_DIRECT_IRQ_LINE_1);
	trigger_irq(TRIGGER_DIRECT_IRQ_LINE_2);

	/*
	 * irq_enable()/irq_disable() does not work here,
	 * see #33901.
	 */
#if !defined(CONFIG_X86)
	zassert_true(direct_int_executed[0] == 1 &&
			direct_int_executed[1] == 1,
			"Both ISR should not execute again");
#endif
}
#else
void test_direct_interrupt(void)
{
	ztest_test_skip();
}
#endif /* end defined(CONFIG_X86) || defined(CONFIG_ARCH_POSIX) */