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      1 /* $NetBSD: hpetvar.h,v 1.7 2020/05/08 22:01:54 ad Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2006 Nicolas Joly
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef _DEV_IC_HPETVAR_H_
     32 #define _DEV_IC_HPETVAR_H_
     33 
     34 #include <sys/timetc.h>
     35 
     36 struct hpet_softc {
     37 	bus_size_t		sc_mems;
     38 	bus_space_tag_t		sc_memt;
     39 	bus_space_handle_t	sc_memh;
     40 
     41 	bool			sc_mapped;
     42 	uint32_t		sc_config;
     43 	int32_t			sc_period;
     44 	int64_t			sc_adj;
     45 	struct			timecounter sc_tc;
     46 };
     47 
     48 void	hpet_attach_subr(device_t);
     49 int	hpet_detach(device_t, int flags);
     50 void	hpet_delay(unsigned int);
     51 bool	hpet_delay_p(void);
     52 uint64_t hpet_tsc_freq(void);
     53 
     54 #endif /* _DEV_IC_HPETVAR_H_ */
     55