source: kStuff/hacks/xtide/atarwbuf.c@ 76

/* $Id: atarwbuf.c 74 2015-12-21 00:40:51Z bird $ */
/** @file
 * Tests writing the ATA buffer.
 */

/*
 * Copyright (c) 2015 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with This program.  If not, see <http://www.gnu.org/licenses/>
 *
 */


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <io.h>
#include <conio.h>
#include <time.h>

#include "atalib.h"



int main(int argc, char **argv)
{
    static uint8_t  s_abBuf1[512];
    static uint8_t  s_abBuf2[512];
    int             rc;
    unsigned        i;
    uint32_t        cSectors;
    clock_t         tsStart;
    clock_t         cTicksElapsed;

    rc = AtaInitFromArgv(1, argc, argv);
    if (rc != 0)
        return 2;

    /*
     * Write and read back.
     */
    for (i = 0; i < 512; i++)
        s_abBuf1[i] = (uint8_t)i;
    rc = AtaWriteBuffer(s_abBuf1, 1 /*fExtraChecks*/);
    if (rc != 0)
        return 1;
    rc = AtaReadBuffer(s_abBuf2, 1 /*fExtraChecks*/);
    if (rc != 0)
        return 1;
    if (memcmp(s_abBuf1, s_abBuf2, sizeof(s_abBuf1)) == 0)
        printf("Initial buffer write and read-back worked\n");
    else
    {
        fprintf(stderr, "error: Initial buffer write and read-back failed!\n");
        return 1;
    }

    /*
     * Do some performance testing.
     */
    /* read */
    cSectors = 0;
    cTicksElapsed = clock();
    do
        tsStart = clock();
    while (tsStart == cTicksElapsed);
    do
    {
        rc = AtaReadBuffer(s_abBuf2, 0 /*fExtraChecks*/);
        if (rc == 0)
            rc = AtaReadBuffer(s_abBuf2, 0 /*fExtraChecks*/);
        if (rc != 0)
            return 1;
        cSectors += 2;
        cTicksElapsed = clock() - tsStart;
    } while (cTicksElapsed < CLOCKS_PER_SEC * 2);
    cSectors >>= 1;
    printf("Read:  %lu bytes/sec (%u sec/s)\n", cSectors * 512, cSectors);

    /* write */
    cSectors = 0;
    cTicksElapsed = clock();
    do
        tsStart = clock();
    while (tsStart == cTicksElapsed);
    do
    {
        rc = AtaWriteBuffer(s_abBuf1, 0 /*fExtraChecks*/);
        if (rc == 0)
            rc = AtaWriteBuffer(s_abBuf1, 0 /*fExtraChecks*/);
        if (rc != 0)
            return 1;
        cSectors += 2;
        cTicksElapsed = clock() - tsStart;
    } while (cTicksElapsed < CLOCKS_PER_SEC * 2);
    cSectors >>= 1;
    printf("Write:  %lu bytes/sec (%u sec/s)\n", cSectors * 512, cSectors);


    return 0;
}