/* $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_ */