/* $NetBSD: hpetvar.h,v 1.7 2020/05/08 22:01:54 ad Exp $ */

/*
 * Copyright (c) 2006 Nicolas Joly
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. 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 AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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.
 */

#ifndef _DEV_IC_HPETVAR_H_
#define _DEV_IC_HPETVAR_H_

#include <sys/timetc.h>

struct hpet_softc {
        bus_size_t              sc_mems;
        bus_space_tag_t         sc_memt;
        bus_space_handle_t      sc_memh;

        bool                    sc_mapped;
        uint32_t                sc_config;
        int32_t                 sc_period;
        int64_t                 sc_adj;
        struct                  timecounter sc_tc;
};

void    hpet_attach_subr(device_t);
int     hpet_detach(device_t, int flags);
void    hpet_delay(unsigned int);
bool    hpet_delay_p(void);
uint64_t hpet_tsc_freq(void);

#endif /* _DEV_IC_HPETVAR_H_ */