xref: /netbsd-src/sys/dev/ic/hpetvar.h (revision 3187bd1ecb51cf005f86e2bd1058e8484511a8a4)
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