1 /*-
2 * Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. Berkeley Software Design Inc's name may not be used to endorse or
13 * promote products derived from this software without specific prior
14 * written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``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 BERKELEY SOFTWARE DESIGN INC 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 * from: BSDI: pmap.v9.h,v 1.10.2.6 1999/08/23 22:18:44 cp Exp
29 * $FreeBSD: releng/6.0/sys/sparc64/include/tte.h 112697 2003-03-27 02:16:31Z jake $
30 */
31
32 #ifndef _MACHINE_TTE_H_
33 #define _MACHINE_TTE_H_
34
35 #define TTE_SHIFT (5)
36
37 #define TD_SIZE_SHIFT (61)
38 #define TD_SOFT2_SHIFT (50)
39 #define TD_DIAG_SHIFT (41)
40 #define TD_PA_SHIFT (13)
41 #define TD_SOFT_SHIFT (7)
42
43 #define TD_SIZE_BITS (2)
44 #define TD_SOFT2_BITS (9)
45 #define TD_DIAG_BITS (9)
46 #define TD_PA_BITS (28)
47 #define TD_SOFT_BITS (6)
48
49 #define TD_SIZE_MASK ((1UL << TD_SIZE_BITS) - 1)
50 #define TD_SOFT2_MASK ((1UL << TD_SOFT2_BITS) - 1)
51 #define TD_DIAG_MASK ((1UL << TD_DIAG_BITS) - 1)
52 #define TD_PA_MASK ((1UL << TD_PA_BITS) - 1)
53 #define TD_SOFT_MASK ((1UL << TD_SOFT_BITS) - 1)
54
55 #define TS_8K (0UL)
56 #define TS_64K (1UL)
57 #define TS_512K (2UL)
58 #define TS_4M (3UL)
59
60 #define TS_MIN TS_8K
61 #define TS_MAX TS_4M
62
63 #define TD_V (1UL << 63)
64 #define TD_8K (TS_8K << TD_SIZE_SHIFT)
65 #define TD_64K (TS_64K << TD_SIZE_SHIFT)
66 #define TD_512K (TS_512K << TD_SIZE_SHIFT)
67 #define TD_4M (TS_4M << TD_SIZE_SHIFT)
68 #define TD_NFO (1UL << 60)
69 #define TD_IE (1UL << 59)
70 #define TD_PA(pa) ((pa) & (TD_PA_MASK << TD_PA_SHIFT))
71 /* NOTE: bit 6 of TD_SOFT will be sign-extended if used as an immediate. */
72 #define TD_FAKE ((1UL << 5) << TD_SOFT_SHIFT)
73 #define TD_EXEC ((1UL << 4) << TD_SOFT_SHIFT)
74 #define TD_REF ((1UL << 3) << TD_SOFT_SHIFT)
75 #define TD_PV ((1UL << 2) << TD_SOFT_SHIFT)
76 #define TD_SW ((1UL << 1) << TD_SOFT_SHIFT)
77 #define TD_WIRED ((1UL << 0) << TD_SOFT_SHIFT)
78 #define TD_L (1UL << 6)
79 #define TD_CP (1UL << 5)
80 #define TD_CV (1UL << 4)
81 #define TD_E (1UL << 3)
82 #define TD_P (1UL << 2)
83 #define TD_W (1UL << 1)
84 #define TD_G (1UL << 0)
85
86 #define TV_SIZE_BITS (TD_SIZE_BITS)
87 #define TV_VPN(va, sz) ((((va) >> TTE_PAGE_SHIFT(sz)) << TV_SIZE_BITS) | sz)
88
89 #define TTE_SIZE_SPREAD (3)
90 #define TTE_PAGE_SHIFT(sz) \
91 (PAGE_SHIFT + ((sz) * TTE_SIZE_SPREAD))
92
93 #define TTE_GET_SIZE(tp) \
94 (((tp)->tte_data >> TD_SIZE_SHIFT) & TD_SIZE_MASK)
95 #define TTE_GET_PAGE_SHIFT(tp) \
96 TTE_PAGE_SHIFT(TTE_GET_SIZE(tp))
97 #define TTE_GET_PAGE_SIZE(tp) \
98 (1 << TTE_GET_PAGE_SHIFT(tp))
99 #define TTE_GET_PAGE_MASK(tp) \
100 (TTE_GET_PAGE_SIZE(tp) - 1)
101
102 #define TTE_GET_PA(tp) \
103 ((tp)->tte_data & (TD_PA_MASK << TD_PA_SHIFT))
104 #define TTE_GET_VPN(tp) \
105 ((tp)->tte_vpn >> TV_SIZE_BITS)
106 #define TTE_GET_VA(tp) \
107 (TTE_GET_VPN(tp) << TTE_GET_PAGE_SHIFT(tp))
108 #define TTE_GET_PMAP(tp) \
109 (((tp)->tte_data & TD_P) != 0 ? \
110 (kernel_pmap) : \
111 (PHYS_TO_VM_PAGE(pmap_kextract((vm_offset_t)(tp)))->md.pmap))
112 #define TTE_ZERO(tp) \
113 memset(tp, 0, sizeof(*tp))
114
115 struct pmap;
116
117 struct tte {
118 u_long tte_vpn;
119 u_long tte_data;
120 TAILQ_ENTRY(tte) tte_link;
121 };
122
123 static __inline int
124 tte_match(struct tte *tp, vm_offset_t va)
125 {
126 return (((tp->tte_data & TD_V) != 0) &&
127 (tp->tte_vpn == TV_VPN(va, TTE_GET_SIZE(tp))));
128 }
129
130 #endif /* !_MACHINE_TTE_H_ */
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