1 /* $NetBSD: pte_motorola.h,v 1.8 2011/02/08 20:20:16 rmind Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1986, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: pte.h 1.13 92/01/20$ 37 * 38 * @(#)pte.h 8.1 (Berkeley) 6/10/93 39 */ 40 41 #ifndef _MACHINE_PTE_H_ 42 #define _MACHINE_PTE_H_ 43 44 /* 45 * m68k motorola MMU segment/page table entries 46 */ 47 48 typedef u_int st_entry_t; /* segment table entry */ 49 typedef u_int pt_entry_t; /* page table entry */ 50 51 #define PT_ENTRY_NULL NULL 52 #define ST_ENTRY_NULL NULL 53 54 #define PG_SHIFT PGSHIFT 55 56 #define SG_V 0x00000002 /* segment is valid */ 57 #define SG_NV 0x00000000 58 #define SG_PROT 0x00000004 /* access protection mask */ 59 #define SG_RO 0x00000004 60 #define SG_RW 0x00000000 61 #define SG_U 0x00000008 /* modified bit (68040) */ 62 #define SG_FRAME ((~0) << PG_SHIFT) 63 #define SG_ISHIFT ((PG_SHIFT << 1) - 2) /* 24 or 22 */ 64 #define SG_IMASK ((~0) << SG_ISHIFT) 65 #define SG_PSHIFT PG_SHIFT 66 #define SG_PMASK (((~0) << SG_PSHIFT) & ~SG_IMASK) 67 68 /* 68040 additions */ 69 #define SG4_MASK1 0xfe000000 70 #define SG4_SHIFT1 25 71 #define SG4_MASK2 0x01fc0000 72 #define SG4_SHIFT2 18 73 #define SG4_MASK3 (((~0) << PG_SHIFT) & ~(SG4_MASK1 | SG4_MASK2)) 74 #define SG4_SHIFT3 PG_SHIFT 75 #define SG4_ADDR1 0xfffffe00 76 #define SG4_ADDR2 ((~0) << (20 - PG_SHIFT)) 77 #define SG4_LEV1SIZE 128 78 #define SG4_LEV2SIZE 128 79 #define SG4_LEV3SIZE (1 << (SG4_SHIFT2 - PG_SHIFT)) /* 64 or 32 */ 80 81 #define PG_V 0x00000001 82 #define PG_NV 0x00000000 83 #define PG_PROT 0x00000004 84 #define PG_U 0x00000008 85 #define PG_M 0x00000010 86 #define PG_W 0x00000100 87 #define PG_RO 0x00000004 88 #define PG_RW 0x00000000 89 #define PG_FRAME ((~0) << PG_SHIFT) 90 #define PG_CI 0x00000040 91 #define PG_PFNUM(x) (((x) & PG_FRAME) >> PG_SHIFT) 92 93 /* 68040 additions */ 94 #define PG_CMASK 0x00000060 /* cache mode mask */ 95 #define PG_CWT 0x00000000 /* writethrough caching */ 96 #define PG_CCB 0x00000020 /* copyback caching */ 97 #define PG_CIS 0x00000040 /* cache inhibited serialized */ 98 #define PG_CIN 0x00000060 /* cache inhibited nonserialized */ 99 #define PG_SO 0x00000080 /* supervisor only */ 100 101 #define M68K_STSIZE (MAXUL2SIZE * SG4_LEV2SIZE * sizeof(st_entry_t)) 102 /* user process segment table size */ 103 #define M68K_MAX_PTSIZE (1 << (32 - PG_SHIFT + 2)) /* max size of UPT */ 104 #define M68K_MAX_KPTSIZE (M68K_MAX_PTSIZE >> 2) /* max memory to allocate to KPT */ 105 #define M68K_PTBASE 0x10000000 /* UPT map base address */ 106 #define M68K_PTMAXSIZE 0x70000000 /* UPT map maximum size */ 107 108 /* 109 * Kernel virtual address to page table entry and to physical address. 110 */ 111 112 #ifdef cesfic 113 #define kvtopte(va) \ 114 (&Sysmap[((unsigned)(va)) >> PGSHIFT]) 115 #else 116 #define kvtopte(va) \ 117 (&Sysmap[((unsigned)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT]) 118 #endif 119 120 #endif /* !_MACHINE_PTE_H_ */ 121