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 * $FreeBSD$ 33 */ 34 35 #ifndef _MACHINE_PTE_H_ 36 #define _MACHINE_PTE_H_ 37 38 /* 39 * Page Table Entries 40 */ 41 #ifndef LOCORE 42 43 /* 32-bit PTE */ 44 struct pte { 45 u_int32_t pte_hi; 46 u_int32_t pte_lo; 47 }; 48 49 struct pteg { 50 struct pte pt[8]; 51 }; 52 53 /* 64-bit (long) PTE */ 54 struct lpte { 55 u_int64_t pte_hi; 56 u_int64_t pte_lo; 57 }; 58 59 struct lpteg { 60 struct lpte pt[8]; 61 }; 62 63 #endif /* LOCORE */ 64 65 /* 32-bit PTE definitions */ 66 67 /* High word: */ 68 #define PTE_VALID 0x80000000 69 #define PTE_VSID_SHFT 7 70 #define PTE_HID 0x00000040 71 #define PTE_API 0x0000003f 72 /* Low word: */ 73 #define PTE_RPGN 0xfffff000 74 #define PTE_REF 0x00000100 75 #define PTE_CHG 0x00000080 76 #define PTE_WIMG 0x00000078 77 #define PTE_W 0x00000040 78 #define PTE_I 0x00000020 79 #define PTE_M 0x00000010 80 #define PTE_G 0x00000008 81 #define PTE_PP 0x00000003 82 #define PTE_SO 0x00000000 /* Super. Only (U: XX, S: RW) */ 83 #define PTE_SW 0x00000001 /* Super. Write-Only (U: RO, S: RW) */ 84 #define PTE_BW 0x00000002 /* Supervisor (U: RW, S: RW) */ 85 #define PTE_BR 0x00000003 /* Both Read Only (U: RO, S: RO) */ 86 #define PTE_RW PTE_BW 87 #define PTE_RO PTE_BR 88 89 #define PTE_EXEC 0x00000200 /* pseudo bit in attrs; page is exec */ 90 91 /* 64-bit PTE definitions */ 92 93 /* High quadword: */ 94 #define LPTE_VSID_SHIFT 12 95 #define LPTE_API 0x0000000000000F80ULL 96 #define LPTE_BIG 0x0000000000000004ULL /* 4kb/16Mb page */ 97 #define LPTE_HID 0x0000000000000002ULL 98 #define LPTE_VALID 0x0000000000000001ULL 99 100 /* Low quadword: */ 101 #define EXTEND_PTE(x) UINT64_C(x) /* make constants 64-bit */ 102 #define LPTE_RPGN 0xfffffffffffff000ULL 103 #define LPTE_REF EXTEND_PTE( PTE_REF ) 104 #define LPTE_CHG EXTEND_PTE( PTE_CHG ) 105 #define LPTE_WIMG EXTEND_PTE( PTE_WIMG ) 106 #define LPTE_W EXTEND_PTE( PTE_W ) 107 #define LPTE_I EXTEND_PTE( PTE_I ) 108 #define LPTE_M EXTEND_PTE( PTE_M ) 109 #define LPTE_G EXTEND_PTE( PTE_G ) 110 #define LPTE_NOEXEC 0x0000000000000004ULL 111 #define LPTE_PP EXTEND_PTE( PTE_PP ) 112 113 #define LPTE_SO EXTEND_PTE( PTE_SO ) /* Super. Only */ 114 #define LPTE_SW EXTEND_PTE( PTE_SW ) /* Super. Write-Only */ 115 #define LPTE_BW EXTEND_PTE( PTE_BW ) /* Supervisor */ 116 #define LPTE_BR EXTEND_PTE( PTE_BR ) /* Both Read Only */ 117 #define LPTE_RW LPTE_BW 118 #define LPTE_RO LPTE_BR 119 120 #ifndef LOCORE 121 typedef struct pte pte_t; 122 typedef struct lpte lpte_t; 123 #endif /* LOCORE */ 124 125 /* 126 * Extract bits from address 127 */ 128 #define ADDR_SR_SHFT 28 129 #define ADDR_PIDX 0x0ffff000 130 #define ADDR_PIDX_SHFT 12 131 #define ADDR_API_SHFT 22 132 #define ADDR_POFF 0x00000fff 133 134 /* 135 * Bits in DSISR: 136 */ 137 #define DSISR_DIRECT 0x80000000 138 #define DSISR_NOTFOUND 0x40000000 139 #define DSISR_PROTECT 0x08000000 140 #define DSISR_INVRX 0x04000000 141 #define DSISR_STORE 0x02000000 142 #define DSISR_DABR 0x00400000 143 #define DSISR_SEGMENT 0x00200000 144 #define DSISR_EAR 0x00100000 145 146 /* 147 * Bits in SRR1 on ISI: 148 */ 149 #define ISSRR1_NOTFOUND 0x40000000 150 #define ISSRR1_DIRECT 0x10000000 151 #define ISSRR1_PROTECT 0x08000000 152 #define ISSRR1_SEGMENT 0x00200000 153 154 #ifdef _KERNEL 155 #ifndef LOCORE 156 extern u_int dsisr(void); 157 #endif /* _KERNEL */ 158 #endif /* LOCORE */ 159 #endif /* _MACHINE_PTE_H_ */ 160