pte.h revision 1.8.2.1
1 /* $NetBSD: pte.h,v 1.8.2.1 1997/06/01 04:12:32 cgd Exp $ */ 2 3 /* 4 * Copyright Notice: 5 * 6 * Copyright (c) 1997 Christopher G. Demetriou. All rights reserved. 7 * 8 * License: 9 * 10 * This License applies to this software ("Software"), created 11 * by Christopher G. Demetriou ("Author"). 12 * 13 * You may use, copy, modify and redistribute this Software without 14 * charge, in either source code form, binary form, or both, on the 15 * following conditions: 16 * 17 * 1. (a) Binary code: (i) a complete copy of the above copyright notice 18 * must be included within each copy of the Software in binary code form, 19 * and (ii) a complete copy of the above copyright notice and all terms 20 * of this License as presented here must be included within each copy of 21 * all documentation accompanying or associated with binary code, in any 22 * medium, along with a list of the software modules to which the license 23 * applies. 24 * 25 * (b) Source Code: A complete copy of the above copyright notice and all 26 * terms of this License as presented here must be included within: (i) 27 * each copy of the Software in source code form, and (ii) each copy of 28 * all accompanying or associated documentation, in any medium. 29 * 30 * 2. The following Acknowledgment must be used in communications 31 * involving the Software as described below: 32 * 33 * This product includes software developed by 34 * Christopher G. Demetriou for the NetBSD Project. 35 * 36 * The Acknowledgment must be conspicuously and completely displayed 37 * whenever the Software, or any software, products or systems containing 38 * the Software, are mentioned in advertising, marketing, informational 39 * or publicity materials of any kind, whether in print, electronic or 40 * other media (except for information provided to support use of 41 * products containing the Software by existing users or customers). 42 * 43 * 3. The name of the Author may not be used to endorse or promote 44 * products derived from this Software without specific prior written 45 * permission (conditions (1) and (2) above are not considered 46 * endorsement or promotion). 47 * 48 * 4. This license applies to: (a) all copies of the Software, whether 49 * partial or whole, original or modified, and (b) your actions, and the 50 * actions of all those who may act on your behalf. All uses not 51 * expressly permitted are reserved to the Author. 52 * 53 * 5. Disclaimer. THIS SOFTWARE IS MADE AVAILABLE BY THE AUTHOR TO THE 54 * PUBLIC FOR FREE AND "AS IS.'' ALL USERS OF THIS FREE SOFTWARE ARE 55 * SOLELY AND ENTIRELY RESPONSIBLE FOR THEIR OWN CHOICE AND USE OF THIS 56 * SOFTWARE FOR THEIR OWN PURPOSES. BY USING THIS SOFTWARE, EACH USER 57 * AGREES THAT THE AUTHOR SHALL NOT BE LIABLE FOR DAMAGES OF ANY KIND IN 58 * RELATION TO ITS USE OR PERFORMANCE. 59 * 60 * 6. If you have a special need for a change in one or more of these 61 * license conditions, please contact the Author via electronic mail to 62 * 63 * cgd (at) NetBSD.ORG 64 * 65 * or via the contact information on 66 * 67 * http://www.NetBSD.ORG/People/Pages/cgd.html 68 */ 69 70 /* 71 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 72 * All rights reserved. 73 * 74 * Author: Chris G. Demetriou 75 * 76 * Permission to use, copy, modify and distribute this software and 77 * its documentation is hereby granted, provided that both the copyright 78 * notice and this permission notice appear in all copies of the 79 * software, derivative works or modified versions, and any portions 80 * thereof, and that both notices appear in supporting documentation. 81 * 82 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 83 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 84 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 85 * 86 * Carnegie Mellon requests users of this software to return to 87 * 88 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 89 * School of Computer Science 90 * Carnegie Mellon University 91 * Pittsburgh PA 15213-3890 92 * 93 * any improvements or extensions that they make and grant Carnegie the 94 * rights to redistribute these changes. 95 */ 96 97 /* 98 * Alpha page table entry. 99 * Things which are in the VMS PALcode but not in the OSF PALcode 100 * are marked with "(VMS)". 101 * 102 * This information derived from pp. (II) 3-3 - (II) 3-6 and 103 * (III) 3-3 - (III) 3-5 of the "Alpha Architecture Reference Manual" by 104 * Richard L. Sites. 105 */ 106 107 /* 108 * Alpha Page Table Entry 109 */ 110 111 #include <machine/alpha_cpu.h> 112 113 typedef alpha_pt_entry_t pt_entry_t; 114 115 #define PT_ENTRY_NULL ((pt_entry_t *) 0) 116 #define PTESHIFT 3 /* pte size == 1 << PTESHIFT */ 117 118 #define PG_V ALPHA_PTE_VALID 119 #define PG_NV 0 120 #define PG_FOR ALPHA_PTE_FAULT_ON_READ 121 #define PG_FOW ALPHA_PTE_FAULT_ON_WRITE 122 #define PG_FOE ALPHA_PTE_FAULT_ON_EXECUTE 123 #define PG_ASM ALPHA_PTE_ASM 124 #define PG_GH ALPHA_PTE_GRANULARITY 125 #define PG_KRE ALPHA_PTE_KR 126 #define PG_URE ALPHA_PTE_UR 127 #define PG_KWE ALPHA_PTE_KW 128 #define PG_UWE ALPHA_PTE_UW 129 #define PG_PROT ALPHA_PTE_PROT 130 #define PG_RSVD 0x000000000000cc80 /* Reserved fpr hardware */ 131 #define PG_WIRED 0x0000000000010000 /* Wired. [SOFTWARE] */ 132 #define PG_FRAME ALPHA_PTE_RAME 133 #define PG_SHIFT 32 134 #define PG_PFNUM(x) ALPHA_PTE_TO_PFN(x) 135 136 #if 0 /* XXX NOT HERE */ 137 #define K0SEG_BEGIN 0xfffffc0000000000 /* unmapped, cached */ 138 #define K0SEG_END 0xfffffe0000000000 139 #define PHYS_UNCACHED 0x0000000040000000 140 #endif 141 142 #ifndef _LOCORE 143 #if 0 /* XXX NOT HERE */ 144 #define k0segtophys(x) ((vm_offset_t)(x) & 0x00000003ffffffff) 145 #define phystok0seg(x) ((vm_offset_t)(x) | K0SEG_BEGIN) 146 147 #define phystouncached(x) ((vm_offset_t)(x) | PHYS_UNCACHED) 148 #define uncachedtophys(x) ((vm_offset_t)(x) & ~PHYS_UNCACHED) 149 #endif 150 151 #define PTEMASK (NPTEPG - 1) 152 #define vatopte(va) (((va) >> PGSHIFT) & PTEMASK) 153 #define vatoste(va) (((va) >> SEGSHIFT) & PTEMASK) 154 #define kvtol1pte(va) \ 155 (((vm_offset_t)(va) >> (PGSHIFT + 2*(PGSHIFT-PTESHIFT))) & PTEMASK) 156 157 #define vatopa(va) \ 158 ((PG_PFNUM(*kvtopte(va)) << PGSHIFT) | ((vm_offset_t)(va) & PGOFSET)) 159 160 #define ALPHA_STSIZE ((u_long)NBPG) /* 8k */ 161 #define ALPHA_MAX_PTSIZE ((u_long)(NPTEPG * NBPG)) /* 8M */ 162 163 #ifdef _KERNEL 164 /* 165 * Kernel virtual address to Sysmap entry and visa versa. 166 */ 167 #define kvtopte(va) \ 168 (Sysmap + (((vm_offset_t)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT)) 169 #define ptetokv(pte) \ 170 ((((pt_entry_t *)(pte) - Sysmap) << PGSHIFT) + VM_MIN_KERNEL_ADDRESS) 171 172 #define loadustp(stpte) { \ 173 Lev1map[kvtol1pte(VM_MIN_ADDRESS)] = stpte; \ 174 ALPHA_TBIAP(); \ 175 alpha_pal_imb(); \ 176 } 177 178 extern pt_entry_t *Lev1map; /* Alpha Level One page table */ 179 extern pt_entry_t *Sysmap; /* kernel pte table */ 180 extern vm_size_t Sysmapsize; /* number of pte's in Sysmap */ 181 #endif 182 #endif 183
Indexes created Sat Oct 25 16:10:12 GMT 2025