1/*-
 2 * Copyright (c) 2014 The FreeBSD Foundation
 3 *
 4 * This software was developed by Semihalf under
 5 * the sponsorship of the FreeBSD Foundation.
 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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef _MACHINE_DEBUG_MONITOR_H_
30#define	_MACHINE_DEBUG_MONITOR_H_
31
32#define	DBG_BRP_MAX	16
33#define	DBG_WRP_MAX	16
34
35struct debug_monitor_state {
36	uint32_t	dbg_enable_count;
37	uint32_t	dbg_flags;
38#define	DBGMON_ENABLED		(1 << 0)
39#define	DBGMON_KERNEL		(1 << 1)
40	uint64_t	dbg_bcr[DBG_BRP_MAX];
41	uint64_t	dbg_bvr[DBG_BRP_MAX];
42	uint64_t	dbg_wcr[DBG_WRP_MAX];
43	uint64_t	dbg_wvr[DBG_WRP_MAX];
44};
45
46#ifdef _KERNEL
47
48enum dbg_access_t {
49	HW_BREAKPOINT_X		= 0,
50	HW_BREAKPOINT_R		= 1,
51	HW_BREAKPOINT_W		= 2,
52	HW_BREAKPOINT_RW	= HW_BREAKPOINT_R | HW_BREAKPOINT_W,
53};
54
55void dbg_monitor_init(void);
56void dbg_register_sync(struct debug_monitor_state *);
57
58#ifdef DDB
59void dbg_show_watchpoint(void);
60#endif
61
62#endif /* _KERNEL */
63
64#endif /* _MACHINE_DEBUG_MONITOR_H_ */