1 /* $NetBSD: pte.h,v 1.15 1997/06/10 19:35:56 veego Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Adam Glass and Gordon W. Ross. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _MACHINE_PTE_H 40 #define _MACHINE_PTE_H 41 42 #define NCONTEXT 8 43 #define SEGINV 255 44 #define NPAGSEG 16 45 #define NSEGMAP 2048 46 47 #define PG_VALID 0x80000000 48 #define PG_WRITE 0x40000000 49 #define PG_SYSTEM 0x20000000 50 #define PG_NC 0x10000000 51 #define PG_TYPE 0x0C000000 52 #define PG_REF 0x02000000 53 #define PG_MOD 0x01000000 54 55 #define PG_SPECIAL (PG_VALID|PG_WRITE|PG_SYSTEM|PG_NC|PG_REF|PG_MOD) 56 #define PG_PERM (PG_VALID|PG_WRITE|PG_SYSTEM|PG_NC) 57 #define PG_MODREF (PG_REF|PG_MOD) 58 #define PG_FRAME 0x0007FFFF 59 60 #define PG_MOD_SHIFT 24 61 #define PG_PERM_SHIFT 28 62 63 #define OBMEM 0 64 #define OBIO 1 65 #define VME_D16 2 66 #define VME_D32 3 67 #define PG_TYPE_SHIFT 26 68 69 #define PG_INVAL 0x0 70 71 #define MAKE_PGTYPE(x) ((x) << PG_TYPE_SHIFT) 72 #define PG_PGNUM(pte) (pte & PG_FRAME) 73 #define PG_PA(pte) ((pte & PG_FRAME) <<PGSHIFT) 74 75 #define PGT_MASK MAKE_PGTYPE(3) 76 #define PGT_OBMEM MAKE_PGTYPE(OBMEM) /* onboard memory */ 77 #define PGT_OBIO MAKE_PGTYPE(OBIO) /* onboard I/O */ 78 #define PGT_VME_D16 MAKE_PGTYPE(VME_D16) /* VMEbus 16-bit data */ 79 #define PGT_VME_D32 MAKE_PGTYPE(VME_D32) /* VMEbus 32-bit data */ 80 81 #define VA_SEGNUM(x) ((u_int)(x) >> SEGSHIFT) 82 83 #define VA_PTE_NUM_SHIFT 13 84 #define VA_PTE_NUM_MASK (0xF << VA_PTE_NUM_SHIFT) 85 #define VA_PTE_NUM(va) ((va & VA_PTE_NUM_MASK) >> VA_PTE_NUM_SHIFT) 86 87 #define PA_PGNUM(pa) ((unsigned)pa >> PGSHIFT) 88 89 #endif /* !_MACHINE_PTE_H*/ 90