pte.h revision 96250
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 96250 2002-05-09 14:09:19Z benno $ 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#define PTE_EXEC 0x00000200 /* pseudo bit in attrs; page is exec */ 76 77#ifndef LOCORE 78typedef struct pte pte_t; 79#endif /* LOCORE */ 80 81/* 82 * Extract bits from address 83 */ 84#define ADDR_SR_SHFT 28 85#define ADDR_PIDX 0x0ffff000 86#define ADDR_PIDX_SHFT 12 87#define ADDR_API_SHFT 22 88#define ADDR_POFF 0x00000fff 89 90#ifndef LOCORE 91#ifdef _KERNEL 92extern pte_t *ptable; 93extern int ptab_cnt; 94#endif /* _KERNEL */ 95#endif /* LOCORE */ 96 97/* 98 * Bits in DSISR: 99 */ 100#define DSISR_DIRECT 0x80000000 101#define DSISR_NOTFOUND 0x40000000 102#define DSISR_PROTECT 0x08000000 103#define DSISR_INVRX 0x04000000 104#define DSISR_STORE 0x02000000 105#define DSISR_DABR 0x00400000 106#define DSISR_SEGMENT 0x00200000 107#define DSISR_EAR 0x00100000 108 109/* 110 * Bits in SRR1 on ISI: 111 */ 112#define ISSRR1_NOTFOUND 0x40000000 113#define ISSRR1_DIRECT 0x10000000 114#define ISSRR1_PROTECT 0x08000000 115#define ISSRR1_SEGMENT 0x00200000 116 117#ifdef _KERNEL 118#ifndef LOCORE 119extern u_int dsisr(void); 120#endif /* _KERNEL */ 121#endif /* LOCORE */ 122#endif /* _MACHINE_PTE_H_ */ 123