1 /* $NetBSD: vmparam.h,v 1.11 2002/12/10 05:14:26 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #ifndef _ARM_ARM32_VMPARAM_H_ 39 #define _ARM_ARM32_VMPARAM_H_ 40 41 #ifdef _KERNEL 42 43 /* 44 * Virtual Memory parameters common to all arm32 platforms. 45 */ 46 47 #include <sys/lock.h> /* struct simplelock */ 48 #include <arm/arm32/pte.h> /* pt_entry_t */ 49 50 #define USRSTACK VM_MAXUSER_ADDRESS 51 52 /* 53 * Note that MAXTSIZ can't be larger than 32M, otherwise the compiler 54 * would have to be changed to not generate "bl" instructions. 55 */ 56 #define MAXTSIZ (16*1024*1024) /* max text size */ 57 #ifndef DFLDSIZ 58 #define DFLDSIZ (128*1024*1024) /* initial data size limit */ 59 #endif 60 #ifndef MAXDSIZ 61 #define MAXDSIZ (512*1024*1024) /* max data size */ 62 #endif 63 #ifndef DFLSSIZ 64 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 65 #endif 66 #ifndef MAXSSIZ 67 #define MAXSSIZ (8*1024*1024) /* max stack size */ 68 #endif 69 70 /* 71 * Size of SysV shared memory map 72 */ 73 #ifndef SHMMAXPGS 74 #define SHMMAXPGS 1024 75 #endif 76 77 /* 78 * While the ARM architecture defines Section mappings, large pages, 79 * and small pages, the standard page size is (and will always be) 4K. 80 */ 81 #define PAGE_SHIFT 12 82 #define PAGE_SIZE (1 << PAGE_SHIFT) 83 #define PAGE_MASK (PAGE_SIZE - 1) 84 85 /* 86 * Linear page table space: number of PTEs required to map the 4G address 87 * space * size of each PTE. 88 */ 89 #define PAGE_TABLE_SPACE ((1 << (32 - PGSHIFT)) * sizeof(pt_entry_t)) 90 91 /* Address where the page talbles are mapped. */ 92 #define PTE_BASE (KERNEL_BASE - PAGE_TABLE_SPACE) 93 94 /* 95 * Mach derived constants 96 */ 97 #define VM_MIN_ADDRESS ((vaddr_t) 0x00001000) 98 #define VM_MAXUSER_ADDRESS ((vaddr_t) (PTE_BASE - UPAGES * NBPG)) 99 #define VM_MAX_ADDRESS ((vaddr_t) (PTE_BASE + \ 100 (KERNEL_BASE >> PGSHIFT) * \ 101 sizeof(pt_entry_t))) 102 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) KERNEL_TEXT_BASE) 103 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t) 0xffffffff) 104 105 /* 106 * pmap-specific data store in the vm_page structure. 107 */ 108 #define __HAVE_VM_PAGE_MD 109 struct vm_page_md { 110 struct pv_entry *pvh_list; /* pv_entry list */ 111 struct simplelock pvh_slock; /* lock on this head */ 112 int pvh_attrs; /* page attributes */ 113 #ifdef PMAP_ALIAS_DEBUG 114 u_int ro_mappings; 115 u_int rw_mappings; 116 u_int kro_mappings; 117 u_int krw_mappings; 118 #endif /* PMAP_ALIAS_DEBUG */ 119 }; 120 121 #define VM_MDPAGE_INIT(pg) \ 122 do { \ 123 (pg)->mdpage.pvh_list = NULL; \ 124 simple_lock_init(&(pg)->mdpage.pvh_slock); \ 125 (pg)->mdpage.pvh_attrs = 0; \ 126 } while (/*CONSTCOND*/0) 127 128 #endif /* _KERNEL */ 129 130 #endif /* _ARM_ARM32_VMPARAM_H_ */ 131