pmap.h revision 133451 
1/*
2 * Copyright (c) 1991 Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * the Systems Programming Group of the University of Utah Computer
7 * Science Department and William Jolitz of UUNET Technologies Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90
34 *	from: @(#)pmap.h        7.4 (Berkeley) 5/12/91
35 *	from: FreeBSD: src/sys/i386/include/pmap.h,v 1.70 2000/11/30
36 * $FreeBSD: head/sys/sparc64/include/pmap.h 133451 2004-08-10 20:53:26Z alc $
37 */
38
39#ifndef	_MACHINE_PMAP_H_
40#define	_MACHINE_PMAP_H_
41
42#include <sys/queue.h>
43#include <sys/_lock.h>
44#include <sys/_mutex.h>
45#include <machine/cache.h>
46#include <machine/tte.h>
47
48#define	PMAP_CONTEXT_MAX	8192
49
50typedef	struct pmap *pmap_t;
51
52struct md_page {
53	TAILQ_HEAD(, tte) tte_list;
54	struct	pmap *pmap;
55	uint32_t colors[DCACHE_COLORS];
56	int32_t	color;
57	uint32_t flags;
58};
59
60struct pmap {
61	struct	mtx pm_mtx;
62	struct	tte *pm_tsb;
63	vm_object_t pm_tsb_obj;
64	u_int	pm_active;
65	u_int	pm_context[MAXCPU];
66	struct	pmap_statistics pm_stats;
67};
68
69#define	PMAP_LOCK(pmap)		mtx_lock(&(pmap)->pm_mtx)
70#define	PMAP_LOCK_ASSERT(pmap, type) \
71				mtx_assert(&(pmap)->pm_mtx, (type))
72#define	PMAP_LOCK_DESTROY(pmap)	mtx_destroy(&(pmap)->pm_mtx)
73#define	PMAP_LOCK_INIT(pmap)	mtx_init(&(pmap)->pm_mtx, "pmap", \
74				    NULL, MTX_DEF)
75#define	PMAP_LOCKED(pmap)	mtx_owned(&(pmap)->pm_mtx)
76#define	PMAP_MTX(pmap)		(&(pmap)->pm_mtx)
77#define	PMAP_TRYLOCK(pmap)	mtx_trylock(&(pmap)->pm_mtx)
78#define	PMAP_UNLOCK(pmap)	mtx_unlock(&(pmap)->pm_mtx)
79
80void	pmap_bootstrap(vm_offset_t ekva);
81vm_paddr_t pmap_kextract(vm_offset_t va);
82void	pmap_kenter(vm_offset_t va, vm_page_t m);
83void	pmap_kremove(vm_offset_t);
84void	pmap_kenter_flags(vm_offset_t va, vm_paddr_t pa, u_long flags);
85void	pmap_kremove_flags(vm_offset_t va);
86boolean_t pmap_page_is_mapped(vm_page_t m);
87
88int	pmap_cache_enter(vm_page_t m, vm_offset_t va);
89void	pmap_cache_remove(vm_page_t m, vm_offset_t va);
90
91int	pmap_remove_tte(struct pmap *pm1, struct pmap *pm2, struct tte *tp,
92			vm_offset_t va);
93int	pmap_protect_tte(struct pmap *pm1, struct pmap *pm2, struct tte *tp,
94			 vm_offset_t va);
95
96void	pmap_map_tsb(void);
97
98void	pmap_clear_write(vm_page_t m);
99
100#define	vtophys(va)	pmap_kextract(((vm_offset_t)(va)))
101
102extern	struct pmap kernel_pmap_store;
103#define	kernel_pmap	(&kernel_pmap_store)
104extern	vm_paddr_t phys_avail[];
105extern	vm_offset_t virtual_avail;
106extern	vm_offset_t virtual_end;
107
108extern	vm_paddr_t msgbuf_phys;
109
110static __inline int
111pmap_track_modified(pmap_t pm, vm_offset_t va)
112{
113	if (pm == kernel_pmap)
114		return ((va < kmi.clean_sva) || (va >= kmi.clean_eva));
115	else
116		return (1);
117}
118
119#ifdef PMAP_STATS
120
121SYSCTL_DECL(_debug_pmap_stats);
122
123#define	PMAP_STATS_VAR(name) \
124	static long name; \
125	SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, name, CTLFLAG_RW, \
126	    &name, 0, "")
127
128#define	PMAP_STATS_INC(var) \
129	atomic_add_long(&var, 1)
130
131#else
132
133#define	PMAP_STATS_VAR(name)
134#define	PMAP_STATS_INC(var)
135
136#endif
137
138#endif /* !_MACHINE_PMAP_H_ */
139