| 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_ */ |