reset.c

Go to the documentation of this file.

/*
 *  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
 *  2 of the License, or (at your option) any later version.
 *
 *  Copyright 1999-2004 Michael Klein <michael(dot)klein(at)puffin(dot)lb(dot)shuttle(dot)de>
 *  Copyright 2001-2004 Spiro Trikaliotis
 *
 */

#include <wdm.h>
#include "cbm_driver.h"
#include "i_iec.h"

NTSTATUS
cbmiec_wait_for_drives_ready(IN PDEVICE_EXTENSION Pdx)
{
    int i=1;
    NTSTATUS ntStatus = STATUS_TIMEOUT;

    FUNC_ENTER();

    while (1) {
        IEC_CHECKDEVICE check_device;

        cbmiec_check_device(Pdx, &check_device);

#if 0
        switch (check_device)
        {
        case IEC_CHECKDEVICE_BUSFREE:
            DBG_PRINT((DBG_PREFIX "%u: Bus is free!", i));
            break;

        case IEC_CHECKDEVICE_BUSBUSY:
            DBG_PRINT((DBG_PREFIX "%u: Bus is busy.", i));
            break;

        case IEC_CHECKDEVICE_NODEVICE:
            DBG_PRINT((DBG_PREFIX "%u: No device.", i));
            break;

        default:
            DBG_PRINT((DBG_PREFIX "%u: UNKNOWN", i));
            break;
        }
#endif

        if (check_device == IEC_CHECKDEVICE_BUSFREE)
        {
            ntStatus = STATUS_SUCCESS;
            break;
        }

        ++i;

        if (i == 1000)
        {
            DBG_PRINT((DBG_PREFIX "Quiting because i has reached %u", i));
            break;
        }
        cbmiec_schedule_timeout(1000);
    }

    FUNC_LEAVE_NTSTATUS(ntStatus);
}

NTSTATUS
cbmiec_reset(IN PDEVICE_EXTENSION Pdx)
{
    FUNC_ENTER();

    CBMIEC_RELEASE(PP_DATA_OUT | PP_ATN_OUT | PP_CLK_OUT | PP_LP_BIDIR | PP_LP_IRQ);

    CBMIEC_SET(PP_RESET_OUT);
    cbmiec_schedule_timeout(libiec_global_timeouts.T_holdreset);
    CBMIEC_RELEASE(PP_RESET_OUT);

    DBG_SUCCESS((DBG_PREFIX "sleeping after RESET..."));

/*
    cbmiec_schedule_timeout(libiec_global_timeouts.T_afterreset);
    CBMIEC_SET(PP_CLK_OUT);
*/
    FUNC_LEAVE_NTSTATUS(cbmiec_wait_for_drives_ready(Pdx));
}