1 /* $NetBSD: vmparam.h,v 1.4 2003/04/02 07:36:03 thorpej Exp $ */ 2 3 /*- 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 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 TooLs GmbH. 19 * 4. The name of TooLs GmbH 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 TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef _MACHINE_VMPARAM_H_ 35 #define _MACHINE_VMPARAM_H_ 36 37 /* 38 * We use 16K pages on IBM4xx CPUs. Override the PAGE_* definitions 39 * to be compile-time constants. 40 */ 41 #define PAGE_SHIFT 14 42 #define PAGE_SIZE (1 << PAGE_SHIFT) 43 #define PAGE_MASK (PAGE_SIZE - 1) 44 45 #define USRSTACK VM_MAXUSER_ADDRESS 46 47 #ifndef MAXTSIZ 48 #define MAXTSIZ (64*1024*1024) /* max text size */ 49 #endif 50 51 #ifndef DFLDSIZ 52 #define DFLDSIZ (128*1024*1024) /* default data size */ 53 #endif 54 55 #ifndef MAXDSIZ 56 #define MAXDSIZ (1*1024*1024*1024) /* max data size */ 57 #endif 58 59 #ifndef DFLSSIZ 60 #define DFLSSIZ (2*1024*1024) /* default stack size */ 61 #endif 62 63 #ifndef MAXSSIZ 64 #define MAXSSIZ (32*1024*1024) /* max stack size */ 65 #endif 66 67 /* 68 * Size of shared memory map 69 */ 70 #ifndef SHMMAXPGS 71 #define SHMMAXPGS 1024 72 #endif 73 74 /* 75 * Size of User Raw I/O map 76 */ 77 #define USRIOSIZE 1024 78 79 #if 1 80 /* 81 * These definitions give you a 2GB kernel VA space. The other set matches 82 * the way other PPC ports lay out their 256MB kernel address space. 83 */ 84 #define VM_MIN_ADDRESS ((vaddr_t)0) 85 #define VM_MAXUSER_ADDRESS ((vaddr_t)0xffff0000-PAGE_SIZE) 86 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 87 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0x80000000) 88 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xff000000) 89 #else 90 /* 91 * Would like to have MAX addresses = 0, but this doesn't (currently) work 92 */ 93 #define VM_MIN_ADDRESS ((vaddr_t)0) 94 #define VM_MAXUSER_ADDRESS ((vaddr_t)0x80000000-PAGE_SIZE) 95 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 96 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)(KERNEL_SR << ADDR_SR_SHFT)) 97 #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + SEGMENT_LENGTH - 1) 98 #endif 99 100 /* XXX max. amount of KVM to be used by buffers. */ 101 #ifndef VM_MAX_KERNEL_BUF 102 #define VM_MAX_KERNEL_BUF (0x10000000 * 7 / 10) 103 104 /* 105 * Override the default pager_map size, there's not enough KVA. 106 */ 107 #define PAGER_MAP_SIZE (4 * 1024 * 1024) 108 #endif 109 110 #define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE) 111 112 #define __HAVE_PMAP_PHYSSEG 113 114 struct pmap_physseg { 115 struct pv_entry *pvent; 116 char *attrs; 117 }; 118 119 #define VM_PHYSSEG_MAX 16 /* 1? */ 120 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 121 #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */ 122 123 #define VM_NFREELIST 1 124 #define VM_FREELIST_DEFAULT 0 125 126 #endif /* _MACHINE_VMPARAM_H_ */ 127