pte.h revision 92842 
1/*-
2 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
3 * Copyright (C) 1995, 1996 TooLs GmbH.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by TooLs GmbH.
17 * 4. The name of TooLs GmbH may not be used to endorse or promote products
18 *    derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 *	$NetBSD: pte.h,v 1.2 1998/08/31 14:43:40 tsubai Exp $
32 * $FreeBSD: head/sys/powerpc/include/pte.h 92842 2002-03-20 23:17:50Z alfred $
33 */
34
35#ifndef	_MACHINE_PTE_H_
36#define	_MACHINE_PTE_H_
37
38/*
39 * Page Table Entries
40 */
41#ifndef	LOCORE
42#include <sys/queue.h>
43
44struct pte {
45	u_int pte_hi;
46	u_int pte_lo;
47};
48
49struct pteg {
50	struct	pte pt[8];
51};
52#endif	/* LOCORE */
53/* High word: */
54#define	PTE_VALID	0x80000000
55#define	PTE_VSID_SHFT	7
56#define	PTE_HID		0x00000040
57#define	PTE_API		0x0000003f
58/* Low word: */
59#define	PTE_RPGN	0xfffff000
60#define	PTE_REF		0x00000100
61#define	PTE_CHG		0x00000080
62#define	PTE_WIMG	0x00000078
63#define	PTE_W		0x00000040
64#define	PTE_I		0x00000020
65#define	PTE_M		0x00000010
66#define	PTE_G		0x00000008
67#define	PTE_PP		0x00000003
68#define	PTE_SO		0x00000000	/* Super. Only       (U: XX, S: RW) */
69#define PTE_SW		0x00000001	/* Super. Write-Only (U: RO, S: RW) */
70#define	PTE_BW		0x00000002	/* Supervisor        (U: RW, S: RW) */
71#define	PTE_BR		0x00000003	/* Both Read Only    (U: RO, S: RO) */
72#define	PTE_RW		PTE_BW
73#define	PTE_RO		PTE_BR
74
75#ifndef	LOCORE
76typedef	struct pte pte_t;
77#endif	/* LOCORE */
78
79/*
80 * Extract bits from address
81 */
82#define	ADDR_SR_SHFT	28
83#define	ADDR_PIDX	0x0ffff000
84#define	ADDR_PIDX_SHFT	12
85#define	ADDR_API_SHFT	22
86#define	ADDR_POFF	0x00000fff
87
88#ifndef	LOCORE
89#ifdef	_KERNEL
90extern pte_t *ptable;
91extern int ptab_cnt;
92#endif	/* _KERNEL */
93#endif	/* LOCORE */
94
95/*
96 * Bits in DSISR:
97 */
98#define	DSISR_DIRECT	0x80000000
99#define	DSISR_NOTFOUND	0x40000000
100#define	DSISR_PROTECT	0x08000000
101#define	DSISR_INVRX	0x04000000
102#define	DSISR_STORE	0x02000000
103#define	DSISR_DABR	0x00400000
104#define	DSISR_SEGMENT	0x00200000
105#define	DSISR_EAR	0x00100000
106
107/*
108 * Bits in SRR1 on ISI:
109 */
110#define	ISSRR1_NOTFOUND	0x40000000
111#define	ISSRR1_DIRECT	0x10000000
112#define	ISSRR1_PROTECT	0x08000000
113#define	ISSRR1_SEGMENT	0x00200000
114
115#ifdef	_KERNEL
116#ifndef	LOCORE
117extern u_int dsisr(void);
118#endif	/* _KERNEL */
119#endif	/* LOCORE */
120#endif	/* _MACHINE_PTE_H_ */
121