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: releng/6.4/sys/sparc64/include/pmap.h 168254 2007-04-02 06:09:43Z 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
50 typedef struct pmap *pmap_t;
51
52 struct 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
60 struct 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 | MTX_DUPOK)
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
80 void pmap_bootstrap(vm_offset_t ekva);
81 vm_paddr_t pmap_kextract(vm_offset_t va);
82 void pmap_kenter(vm_offset_t va, vm_page_t m);
83 void pmap_kremove(vm_offset_t);
84 void pmap_kenter_flags(vm_offset_t va, vm_paddr_t pa, u_long flags);
85 void pmap_kremove_flags(vm_offset_t va);
86 boolean_t pmap_page_is_mapped(vm_page_t m);
87
88 int pmap_cache_enter(vm_page_t m, vm_offset_t va);
89 void pmap_cache_remove(vm_page_t m, vm_offset_t va);
90
91 int pmap_remove_tte(struct pmap *pm1, struct pmap *pm2, struct tte *tp,
92 vm_offset_t va);
93 int pmap_protect_tte(struct pmap *pm1, struct pmap *pm2, struct tte *tp,
94 vm_offset_t va);
95
96 void pmap_map_tsb(void);
97
98 void pmap_clear_write(vm_page_t m);
99
100 #define vtophys(va) pmap_kextract(((vm_offset_t)(va)))
101
102 extern struct pmap kernel_pmap_store;
103 #define kernel_pmap (&kernel_pmap_store)
104 extern vm_paddr_t phys_avail[];
105 extern vm_offset_t virtual_avail;
106 extern vm_offset_t virtual_end;
107
108 extern vm_paddr_t msgbuf_phys;
109
110 #ifdef PMAP_STATS
111
112 SYSCTL_DECL(_debug_pmap_stats);
113
114 #define PMAP_STATS_VAR(name) \
115 static long name; \
116 SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, name, CTLFLAG_RW, \
117 &name, 0, "")
118
119 #define PMAP_STATS_INC(var) \
120 atomic_add_long(&var, 1)
121
122 #else
123
124 #define PMAP_STATS_VAR(name)
125 #define PMAP_STATS_INC(var)
126
127 #endif
128
129 #endif /* !_MACHINE_PMAP_H_ */
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