pmap.h revision 216803 
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 216803 2010-12-29 16:59:33Z marius $
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	cpumask_t pm_active;
65	uint32_t pm_gen_count;	/* generation count (pmap lock dropped) */
66	u_int	pm_retries;
67	u_int	pm_context[MAXCPU];
68	struct	pmap_statistics pm_stats;
69};
70
71#define	PMAP_LOCK(pmap)		mtx_lock(&(pmap)->pm_mtx)
72#define	PMAP_LOCK_ASSERT(pmap, type)					\
73				mtx_assert(&(pmap)->pm_mtx, (type))
74#define	PMAP_LOCK_DESTROY(pmap)	mtx_destroy(&(pmap)->pm_mtx)
75#define	PMAP_LOCK_INIT(pmap)	mtx_init(&(pmap)->pm_mtx, "pmap",	\
76				    NULL, MTX_DEF | MTX_DUPOK)
77#define	PMAP_LOCKED(pmap)	mtx_owned(&(pmap)->pm_mtx)
78#define	PMAP_MTX(pmap)		(&(pmap)->pm_mtx)
79#define	PMAP_TRYLOCK(pmap)	mtx_trylock(&(pmap)->pm_mtx)
80#define	PMAP_UNLOCK(pmap)	mtx_unlock(&(pmap)->pm_mtx)
81
82#define	pmap_page_get_memattr(m)	VM_MEMATTR_DEFAULT
83#define	pmap_page_set_memattr(m, ma)	(void)0
84
85void	pmap_bootstrap(u_int cpu_impl);
86vm_paddr_t pmap_kextract(vm_offset_t va);
87void	pmap_kenter(vm_offset_t va, vm_page_t m);
88void	pmap_kremove(vm_offset_t);
89void	pmap_kenter_flags(vm_offset_t va, vm_paddr_t pa, u_long flags);
90void	pmap_kremove_flags(vm_offset_t va);
91boolean_t pmap_page_is_mapped(vm_page_t m);
92
93int	pmap_cache_enter(vm_page_t m, vm_offset_t va);
94void	pmap_cache_remove(vm_page_t m, vm_offset_t va);
95
96int	pmap_remove_tte(struct pmap *pm1, struct pmap *pm2, struct tte *tp,
97			vm_offset_t va);
98int	pmap_protect_tte(struct pmap *pm1, struct pmap *pm2, struct tte *tp,
99			 vm_offset_t va);
100
101void	pmap_map_tsb(void);
102void	pmap_set_kctx(void);
103
104#define	vtophys(va)	pmap_kextract((vm_offset_t)(va))
105
106extern	struct pmap kernel_pmap_store;
107#define	kernel_pmap	(&kernel_pmap_store)
108extern	vm_paddr_t phys_avail[];
109extern	vm_offset_t virtual_avail;
110extern	vm_offset_t virtual_end;
111
112#ifdef PMAP_STATS
113
114SYSCTL_DECL(_debug_pmap_stats);
115
116#define	PMAP_STATS_VAR(name) \
117	static long name; \
118	SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, name, CTLFLAG_RW,	\
119	    &name, 0, "")
120
121#define	PMAP_STATS_INC(var) \
122	atomic_add_long(&var, 1)
123
124#else
125
126#define	PMAP_STATS_VAR(name)
127#define	PMAP_STATS_INC(var)
128
129#endif
130
131#endif /* !_MACHINE_PMAP_H_ */
132