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/*

 * Copyright (c) 2005 Ondrej Palkovsky

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - 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.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <print.h>

#include <debug.h>

#include <test.h>

#include <atomic.h>

#include <proc/thread.h>

#include <time/delay.h>

#include <arch.h>

#define THREADS   50

#define DELAY     10000L

#define ATTEMPTS  5

static atomic_t threads_ok;

static atomic_t threads_fault;

static waitq_t can_start;

static void testit1(void *data)

{

    int i;

    int arg __attribute__((aligned(16))) = (int) ((unative_t) data);

    int after_arg __attribute__((aligned(16)));

    thread_detach(THREAD);

    waitq_sleep(&can_start);

    for (i = 0; i < ATTEMPTS; i++) {

        asm volatile (

            "mtc1 %0,$1"

            : "=r" (arg)

        );

        delay(DELAY);

        asm volatile (

            "mfc1 %0, $1"

            : "=r" (after_arg)

        );

        if (arg != after_arg) {

            TPRINTF("General reg tid%" PRIu64 ": arg(%d) != %d\n", THREAD->tid, arg, after_arg);

            atomic_inc(&threads_fault);

            break;

        }

    }

    atomic_inc(&threads_ok);

}

static void testit2(void *data)

{

    int i;

    int arg __attribute__((aligned(16))) = (int) ((unative_t) data);

    int after_arg __attribute__((aligned(16)));

    thread_detach(THREAD);

    waitq_sleep(&can_start);

    for (i = 0; i < ATTEMPTS; i++) {

        asm volatile (

            "mtc1 %0,$1"

            : "=r" (arg)

        );

        scheduler();

        asm volatile (

            "mfc1 %0,$1"

            : "=r" (after_arg)

        );

        if (arg != after_arg) {

            TPRINTF("General reg tid%" PRIu64 ": arg(%d) != %d\n", THREAD->tid, arg, after_arg);

            atomic_inc(&threads_fault);

            break;

        }

    }

    atomic_inc(&threads_ok);

}

char *test_mips2(void)

{

    unsigned int i, total = 0;

    waitq_initialize(&can_start);

    atomic_set(&threads_ok, 0);

    atomic_set(&threads_fault, 0);

    TPRINTF("Creating %u threads... ", 2 * THREADS);

    for (i = 0; i < THREADS; i++) {

        thread_t *t;

        if (!(t = thread_create(testit1, (void *) ((unative_t) 2 * i), TASK, 0, "testit1", false))) {

            TPRINTF("could not create thread %u\n", 2 * i);

            break;

        }

        thread_ready(t);

        total++;

        if (!(t = thread_create(testit2, (void *) ((unative_t) 2 * i + 1), TASK, 0, "testit2", false))) {

            TPRINTF("could not create thread %u\n", 2 * i + 1);

            break;

        }

        thread_ready(t);

        total++;

    }

    TPRINTF("ok\n");

    thread_sleep(1);

    waitq_wakeup(&can_start, WAKEUP_ALL);

    while (atomic_get(&threads_ok) != (long) total) {

        TPRINTF("Threads left: %d\n", total - atomic_get(&threads_ok));

        thread_sleep(1);

    }

    if (atomic_get(&threads_fault) == 0)

        return NULL;

    return "Test failed";

}