1 /* $NetBSD: vmparam.h,v 1.41 2020/02/01 19:41:49 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 _HP300_VMPARAM_H_ 42 #define _HP300_VMPARAM_H_ 43 44 /* 45 * Machine dependent constants for HP300 46 */ 47 48 /* 49 * Use common m68k definitions to define PAGE_SIZE and related constants. 50 */ 51 #include <m68k/vmparam.h> 52 53 /* 54 * USRSTACK is the top (end) of the user stack. 55 * 56 * NOTE: the ONLY reason that HIGHPAGES is 0x100 instead of UPAGES (3) 57 * is for HPUX compatibility. Why?? Because HPUX's debuggers 58 * have the user's stack hard-wired at FFF00000 for post-mortems, 59 * and we must be compatible... 60 */ 61 #define USRSTACK (-HIGHPAGES*PAGE_SIZE) /* Start of user stack */ 62 #define BTOPUSRSTACK (0x100000-HIGHPAGES) /* btop(USRSTACK) */ 63 #define P1PAGES 0x100000 64 #define HIGHPAGES (0x100000/PAGE_SIZE) 65 66 /* 67 * Virtual memory related constants, all in bytes 68 */ 69 #ifndef MAXTSIZ 70 #define MAXTSIZ (32*1024*1024) /* max text size */ 71 #endif 72 #ifndef DFLDSIZ 73 #define DFLDSIZ (32*1024*1024) /* initial data size limit */ 74 #endif 75 #ifndef MAXDSIZ 76 #define MAXDSIZ (256*1024*1024) /* max data size */ 77 #endif 78 #ifndef DFLSSIZ 79 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 80 #endif 81 #ifndef MAXSSIZ 82 #define MAXSSIZ MAXDSIZ /* max stack size */ 83 #endif 84 85 /* 86 * PTEs for mapping user space into the kernel for phyio operations. 87 * One page is enough to handle 4Mb of simultaneous raw IO operations. 88 */ 89 #ifndef USRIOSIZE 90 #define USRIOSIZE (1 * NPTEPG) /* 4mb */ 91 #endif 92 93 /* 94 * External IO space map size. 95 * By default we make it large enough to map up to 3 DIO-II devices and 96 * the complete DIO space. For a 320-only configuration (which has no 97 * DIO-II) you could define a considerably smaller region. 98 */ 99 #ifndef EIOMAPSIZE 100 #define EIOMAPSIZE 3584 /* 14mb */ 101 #endif 102 103 /* 104 * Mach derived constants 105 */ 106 107 /* user/kernel map constants */ 108 #define VM_MIN_ADDRESS ((vaddr_t)0) 109 #define VM_MAXUSER_ADDRESS ((vaddr_t)0xFFF00000) 110 #define VM_MAX_ADDRESS ((vaddr_t)0xFFF00000) 111 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0) 112 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)(0-PAGE_SIZE*NPTEPG*2)) 113 114 /* virtual sizes (bytes) for various kernel submaps */ 115 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 116 117 /* # of kernel PT pages (initial only, can grow dynamically) */ 118 #define VM_KERNEL_PT_PAGES ((vsize_t)2) 119 120 /* 121 * Constants which control the way the VM system deals with memory segments. 122 * The hp300 only has one physical memory segment. 123 */ 124 #define VM_PHYSSEG_MAX 1 125 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 126 127 #define VM_NFREELIST 1 128 #define VM_FREELIST_DEFAULT 0 129 130 #define __HAVE_PMAP_PHYSSEG 131 132 /* 133 * pmap-specific data stored in the vm_physmem[] array. 134 */ 135 struct pmap_physseg { 136 struct pv_header *pvheader; /* pv table for this seg */ 137 }; 138 139 #endif /* _HP300_VMPARAM_H_ */ 140