1 /* $NetBSD: pte.h,v 1.8 1994/11/21 21:34:12 gwr Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Gordon W. Ross 5 * Copyright (c) 1993 Adam Glass 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Adam Glass. 19 * 4. The name of the Author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #ifndef _MACHINE_PTE_H 36 #define _MACHINE_PTE_H 37 38 #define NCONTEXT 8 39 #define SEGINV 255 40 #define NPAGSEG 16 41 #define NSEGMAP 2048 42 43 #define PG_VALID 0x80000000 44 #define PG_WRITE 0x40000000 45 #define PG_SYSTEM 0x20000000 46 #define PG_NC 0x10000000 47 #define PG_TYPE 0x0C000000 48 #define PG_REF 0x02000000 49 #define PG_MOD 0x01000000 50 51 #define PG_SPECIAL (PG_VALID|PG_WRITE|PG_SYSTEM|PG_NC|PG_REF|PG_MOD) 52 #define PG_PERM (PG_VALID|PG_WRITE|PG_SYSTEM|PG_NC) 53 #define PG_MODREF (PG_REF|PG_MOD) 54 #define PG_FRAME 0x0007FFFF 55 56 #define PG_MOD_SHIFT 24 57 #define PG_PERM_SHIFT 28 58 59 #define OBMEM 0 60 #define OBIO 1 61 #define VME_D16 2 62 #define VME_D32 3 63 #define PG_TYPE_SHIFT 26 64 65 #define PG_INVAL 0x0 66 67 #define MAKE_PGTYPE(x) ((x) << PG_TYPE_SHIFT) 68 #define PG_PGNUM(pte) (pte & PG_FRAME) 69 #define PG_PA(pte) ((pte & PG_FRAME) <<PGSHIFT) 70 71 #define PGT_MASK MAKE_PGTYPE(3) 72 #define PGT_OBMEM MAKE_PGTYPE(OBMEM) /* onboard memory */ 73 #define PGT_OBIO MAKE_PGTYPE(OBIO) /* onboard I/O */ 74 #define PGT_VME_D16 MAKE_PGTYPE(VME_D16) /* VMEbus 16-bit data */ 75 #define PGT_VME_D32 MAKE_PGTYPE(VME_D32) /* VMEbus 32-bit data */ 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) (pa >>PGSHIFT) 82 83 #endif /* !_MACHINE_PTE_H*/ 84