1 /* $NetBSD: pte3.h,v 1.18 2009/01/12 06:53:39 tsutsui 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _MACHINE_PTE3_H 33 #define _MACHINE_PTE3_H 34 35 #define NCONTEXT 8 36 #define NPMEG 256 37 #define SEGINV (NPMEG-1) 38 #define NPAGSEG 16 39 #define NSEGMAP 2048 40 41 #define PG_VALID 0x80000000 42 #define PG_WRITE 0x40000000 43 #define PG_SYSTEM 0x20000000 44 #define PG_NC 0x10000000 45 #define PG_TYPE 0x0C000000 46 #define PG_REF 0x02000000 47 #define PG_MOD 0x01000000 48 49 #define PG_SPECIAL (PG_VALID|PG_WRITE|PG_SYSTEM|PG_NC|PG_REF|PG_MOD) 50 #define PG_PERM (PG_VALID|PG_WRITE|PG_SYSTEM|PG_NC) 51 #define PG_MODREF (PG_REF|PG_MOD) 52 #define PG_FRAME 0x0007FFFF 53 54 #define PG_MOD_SHIFT 24 55 #define PG_PERM_SHIFT 28 56 57 #define OBMEM 0 58 #define OBIO 1 59 #define VME_D16 2 60 #define VME_D32 3 61 #define PG_TYPE_SHIFT 26 62 63 #define PG_INVAL 0x0 64 65 #define MAKE_PGTYPE(x) ((x) << PG_TYPE_SHIFT) 66 #define PG_PFNUM(pte) (pte & PG_FRAME) 67 #define PG_PA(pte) (PG_PFNUM(pte) << PGSHIFT) 68 69 #define PGT_MASK MAKE_PGTYPE(3) 70 #define PGT_OBMEM MAKE_PGTYPE(OBMEM) /* onboard memory */ 71 #define PGT_OBIO MAKE_PGTYPE(OBIO) /* onboard I/O */ 72 #define PGT_VME_D16 MAKE_PGTYPE(VME_D16) /* VMEbus 16-bit data */ 73 #define PGT_VME_D32 MAKE_PGTYPE(VME_D32) /* VMEbus 32-bit data */ 74 75 #define VA_SEGNUM(x) ((u_int)(x) >> SEGSHIFT) 76 77 #define VA_PTE_NUM_SHIFT 13 78 #define VA_PTE_NUM_MASK (0xF << VA_PTE_NUM_SHIFT) 79 #define VA_PTE_NUM(va) (((va) & VA_PTE_NUM_MASK) >> VA_PTE_NUM_SHIFT) 80 81 #define PA_PGNUM(pa) ((unsigned)(pa) >> PGSHIFT) 82 83 #endif /* _MACHINE_PTE3_H */ 84