1 /* $NetBSD: vmparam.h,v 1.1 2020/02/01 19:41:48 tsutsui 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 $Hdr: vmparam.h 1.16 91/01/18$ 37 * 38 * @(#)vmparam.h 8.2 (Berkeley) 4/19/94 39 */ 40 41 #ifndef _M68K_VMPARAM_H_ 42 #define _M68K_VMPARAM_H_ 43 44 /* 45 * Common constants for m68k ports 46 */ 47 48 /* 49 * hp300 pmap derived m68k ports can use 4K or 8K pages. 50 * (except HPMMU machines, that support only 4K page) 51 * sun3 and sun3x use 8K pages. 52 * The page size is specified by PGSHIFT in <machine/param.h>. 53 * Override the PAGE_* definitions to be compile-time constants. 54 */ 55 #define PAGE_SHIFT PGSHIFT 56 #define PAGE_SIZE (1 << PAGE_SHIFT) 57 #define PAGE_MASK (PAGE_SIZE - 1) 58 59 /* Some implemantations like jemalloc(3) require physical page size details. */ 60 /* 61 * XXX: 62 * <uvm/uvm_param.h> assumes PAGE_SIZE is not a constant macro 63 * but a variable (*uvmexp_pagesize) on MODULE builds in case of 64 * (MIN_PAGE_SIZE != MAX_PAGE_SIZE). For now we define these macros 65 * for m68k ports only on !_KERNEL (currently just for jemalloc) builds. 66 */ 67 #if !defined(_KERNEL) 68 #define MIN_PAGE_SHIFT 12 69 #define MAX_PAGE_SHIFT 13 70 #define MIN_PAGE_SIZE (1 << MIN_PAGE_SHIFT) 71 #define MAX_PAGE_SIZE (1 << MAX_PAGE_SHIFT) 72 #endif /* !_KERNEL */ 73 74 #endif /* _M68K_VMPARAM_H_ */ 75