83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
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/* Copyright 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Test interrupt support of EC emulator.
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*/
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#include <stdio.h>
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#include "common.h"
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#include "console.h"
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#include "task.h"
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#include "test_util.h"
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#include "timer.h"
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#include "util.h"
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static int main_count;
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static int has_error;
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static int interrupt_count;
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/* period between 50us and 3.2ms */
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#define PERIOD_US(num) (((num % 64) + 1) * 50)
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void my_isr(void)
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{
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int i = main_count;
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udelay(3 * PERIOD_US(prng_no_seed()));
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if (i != main_count || !in_interrupt_context())
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has_error = 1;
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interrupt_count++;
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}
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void interrupt_generator(void)
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{
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while (1) {
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udelay(3 * PERIOD_US(prng_no_seed()));
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task_trigger_test_interrupt(my_isr);
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}
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}
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static int interrupt_test(void)
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{
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timestamp_t deadline = get_time();
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deadline.val += SECOND / 2;
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while (!timestamp_expired(deadline, NULL))
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++main_count;
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ccprintf("Interrupt count: %d\n", interrupt_count);
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ccprintf("Main thread tick: %d\n", main_count);
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TEST_ASSERT(!has_error);
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TEST_ASSERT(!in_interrupt_context());
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return EC_SUCCESS;
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}
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static int interrupt_disable_test(void)
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{
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timestamp_t deadline = get_time();
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int start_int_cnt, end_int_cnt;
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deadline.val += SECOND / 2;
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interrupt_disable();
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start_int_cnt = interrupt_count;
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while (!timestamp_expired(deadline, NULL))
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;
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end_int_cnt = interrupt_count;
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interrupt_enable();
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TEST_ASSERT(start_int_cnt == end_int_cnt);
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return EC_SUCCESS;
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}
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void run_test(void)
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{
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test_reset();
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RUN_TEST(interrupt_test);
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RUN_TEST(interrupt_disable_test);
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test_print_result();
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}
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