1 /* $NetBSD: pte_motorola.h,v 1.7 2009/12/07 14:23:45 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Utah $Hdr: pte.h 1.13 92/01/20$ 36 * 37 * @(#)pte.h 8.1 (Berkeley) 6/10/93 38 */ 39 /* 40 * Copyright (c) 1988 University of Utah. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * from: Utah $Hdr: pte.h 1.13 92/01/20$ 75 * 76 * @(#)pte.h 8.1 (Berkeley) 6/10/93 77 */ 78 79 #ifndef _MACHINE_PTE_H_ 80 #define _MACHINE_PTE_H_ 81 82 /* 83 * m68k motorola MMU segment/page table entries 84 */ 85 86 typedef u_int st_entry_t; /* segment table entry */ 87 typedef u_int pt_entry_t; /* page table entry */ 88 89 #define PT_ENTRY_NULL NULL 90 #define ST_ENTRY_NULL NULL 91 92 #define PG_SHIFT PGSHIFT 93 94 #define SG_V 0x00000002 /* segment is valid */ 95 #define SG_NV 0x00000000 96 #define SG_PROT 0x00000004 /* access protection mask */ 97 #define SG_RO 0x00000004 98 #define SG_RW 0x00000000 99 #define SG_U 0x00000008 /* modified bit (68040) */ 100 #define SG_FRAME ((~0) << PG_SHIFT) 101 #define SG_ISHIFT ((PG_SHIFT << 1) - 2) /* 24 or 22 */ 102 #define SG_IMASK ((~0) << SG_ISHIFT) 103 #define SG_PSHIFT PG_SHIFT 104 #define SG_PMASK (((~0) << SG_PSHIFT) & ~SG_IMASK) 105 106 /* 68040 additions */ 107 #define SG4_MASK1 0xfe000000 108 #define SG4_SHIFT1 25 109 #define SG4_MASK2 0x01fc0000 110 #define SG4_SHIFT2 18 111 #define SG4_MASK3 (((~0) << PG_SHIFT) & ~(SG4_MASK1 | SG4_MASK2)) 112 #define SG4_SHIFT3 PG_SHIFT 113 #define SG4_ADDR1 0xfffffe00 114 #define SG4_ADDR2 ((~0) << (20 - PG_SHIFT)) 115 #define SG4_LEV1SIZE 128 116 #define SG4_LEV2SIZE 128 117 #define SG4_LEV3SIZE (1 << (SG4_SHIFT2 - PG_SHIFT)) /* 64 or 32 */ 118 119 #define PG_V 0x00000001 120 #define PG_NV 0x00000000 121 #define PG_PROT 0x00000004 122 #define PG_U 0x00000008 123 #define PG_M 0x00000010 124 #define PG_W 0x00000100 125 #define PG_RO 0x00000004 126 #define PG_RW 0x00000000 127 #define PG_FRAME ((~0) << PG_SHIFT) 128 #define PG_CI 0x00000040 129 #define PG_PFNUM(x) (((x) & PG_FRAME) >> PG_SHIFT) 130 131 /* 68040 additions */ 132 #define PG_CMASK 0x00000060 /* cache mode mask */ 133 #define PG_CWT 0x00000000 /* writethrough caching */ 134 #define PG_CCB 0x00000020 /* copyback caching */ 135 #define PG_CIS 0x00000040 /* cache inhibited serialized */ 136 #define PG_CIN 0x00000060 /* cache inhibited nonserialized */ 137 #define PG_SO 0x00000080 /* supervisor only */ 138 139 #define M68K_STSIZE (MAXUL2SIZE * SG4_LEV2SIZE * sizeof(st_entry_t)) 140 /* user process segment table size */ 141 #define M68K_MAX_PTSIZE (1 << (32 - PG_SHIFT + 2)) /* max size of UPT */ 142 #define M68K_MAX_KPTSIZE (M68K_MAX_PTSIZE >> 2) /* max memory to allocate to KPT */ 143 #define M68K_PTBASE 0x10000000 /* UPT map base address */ 144 #define M68K_PTMAXSIZE 0x70000000 /* UPT map maximum size */ 145 146 /* 147 * Kernel virtual address to page table entry and to physical address. 148 */ 149 150 #ifdef cesfic 151 #define kvtopte(va) \ 152 (&Sysmap[((unsigned)(va)) >> PGSHIFT]) 153 #else 154 #define kvtopte(va) \ 155 (&Sysmap[((unsigned)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT]) 156 #endif 157 158 #endif /* !_MACHINE_PTE_H_ */ 159