tte.h revision 181398 
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: head/sys/sparc64/include/tte.h 181398 2008-08-07 22:46:25Z marius $
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_CH_BITS	(30)
47#define	TD_PA_SF_BITS	(28)
48#define	TD_PA_BITS	TD_PA_SF_BITS
49#define	TD_SOFT_BITS	(6)
50
51#define	TD_SIZE_MASK	((1UL << TD_SIZE_BITS) - 1)
52#define	TD_SOFT2_MASK	((1UL << TD_SOFT2_BITS) - 1)
53#define	TD_DIAG_MASK	((1UL << TD_DIAG_BITS) - 1)
54#define	TD_PA_CH_MASK	((1UL << TD_PA_CH_BITS) - 1)
55#define	TD_PA_SF_MASK	((1UL << TD_PA_SF_BITS) - 1)
56#define	TD_PA_MASK	((1UL << TD_PA_BITS) - 1)
57#define	TD_SOFT_MASK	((1UL << TD_SOFT_BITS) - 1)
58
59#define	TS_8K		(0UL)
60#define	TS_64K		(1UL)
61#define	TS_512K		(2UL)
62#define	TS_4M		(3UL)
63
64#define	TS_MIN		TS_8K
65#define	TS_MAX		TS_4M
66
67#define	TD_V		(1UL << 63)
68#define	TD_8K		(TS_8K << TD_SIZE_SHIFT)
69#define	TD_64K		(TS_64K << TD_SIZE_SHIFT)
70#define	TD_512K		(TS_512K << TD_SIZE_SHIFT)
71#define	TD_4M		(TS_4M << TD_SIZE_SHIFT)
72#define	TD_NFO		(1UL << 60)
73#define	TD_IE		(1UL << 59)
74#define	TD_PA(pa)	((pa) & (TD_PA_MASK << TD_PA_SHIFT))
75/* NOTE: bit 6 of TD_SOFT will be sign-extended if used as an immediate. */
76#define	TD_FAKE		((1UL << 5) << TD_SOFT_SHIFT)
77#define	TD_EXEC		((1UL << 4) << TD_SOFT_SHIFT)
78#define	TD_REF		((1UL << 3) << TD_SOFT_SHIFT)
79#define	TD_PV		((1UL << 2) << TD_SOFT_SHIFT)
80#define	TD_SW		((1UL << 1) << TD_SOFT_SHIFT)
81#define	TD_WIRED	((1UL << 0) << TD_SOFT_SHIFT)
82#define	TD_L		(1UL << 6)
83#define	TD_CP		(1UL << 5)
84#define	TD_CV		(1UL << 4)
85#define	TD_E		(1UL << 3)
86#define	TD_P		(1UL << 2)
87#define	TD_W		(1UL << 1)
88#define	TD_G		(1UL << 0)
89
90#define	TV_SIZE_BITS	(TD_SIZE_BITS)
91#define	TV_VPN(va, sz)	((((va) >> TTE_PAGE_SHIFT(sz)) << TV_SIZE_BITS) | sz)
92
93#define	TTE_SIZE_SPREAD	(3)
94#define	TTE_PAGE_SHIFT(sz) \
95	(PAGE_SHIFT + ((sz) * TTE_SIZE_SPREAD))
96
97#define	TTE_GET_SIZE(tp) \
98	(((tp)->tte_data >> TD_SIZE_SHIFT) & TD_SIZE_MASK)
99#define	TTE_GET_PAGE_SHIFT(tp) \
100	TTE_PAGE_SHIFT(TTE_GET_SIZE(tp))
101#define	TTE_GET_PAGE_SIZE(tp) \
102	(1 << TTE_GET_PAGE_SHIFT(tp))
103#define	TTE_GET_PAGE_MASK(tp) \
104	(TTE_GET_PAGE_SIZE(tp) - 1)
105
106#define	TTE_GET_PA(tp) \
107	((tp)->tte_data & (TD_PA_MASK << TD_PA_SHIFT))
108#define	TTE_GET_VPN(tp) \
109	((tp)->tte_vpn >> TV_SIZE_BITS)
110#define	TTE_GET_VA(tp) \
111	(TTE_GET_VPN(tp) << TTE_GET_PAGE_SHIFT(tp))
112#define	TTE_GET_PMAP(tp) \
113	(((tp)->tte_data & TD_P) != 0 ? \
114	 (kernel_pmap) : \
115	 (PHYS_TO_VM_PAGE(pmap_kextract((vm_offset_t)(tp)))->md.pmap))
116#define	TTE_ZERO(tp) \
117	memset(tp, 0, sizeof(*tp))
118
119struct pmap;
120
121struct tte {
122	u_long	tte_vpn;
123	u_long	tte_data;
124	TAILQ_ENTRY(tte) tte_link;
125};
126
127static __inline int
128tte_match(struct tte *tp, vm_offset_t va)
129{
130	return (((tp->tte_data & TD_V) != 0) &&
131	    (tp->tte_vpn == TV_VPN(va, TTE_GET_SIZE(tp))));
132}
133
134#endif /* !_MACHINE_TTE_H_ */
135