Annotation of sys/arch/mips64/include/vmparam.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: vmparam.h,v 1.13 2007/05/03 19:34:00 miod Exp $ */
! 2: /* $NetBSD: vmparam.h,v 1.5 1994/10/26 21:10:10 cgd Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1988 University of Utah.
! 6: * Copyright (c) 1992, 1993
! 7: * The Regents of the University of California. All rights reserved.
! 8: *
! 9: * This code is derived from software contributed to Berkeley by
! 10: * the Systems Programming Group of the University of Utah Computer
! 11: * Science Department and Ralph Campbell.
! 12: *
! 13: * Redistribution and use in source and binary forms, with or without
! 14: * modification, are permitted provided that the following conditions
! 15: * are met:
! 16: * 1. Redistributions of source code must retain the above copyright
! 17: * notice, this list of conditions and the following disclaimer.
! 18: * 2. Redistributions in binary form must reproduce the above copyright
! 19: * notice, this list of conditions and the following disclaimer in the
! 20: * documentation and/or other materials provided with the distribution.
! 21: * 3. Neither the name of the University nor the names of its contributors
! 22: * may be used to endorse or promote products derived from this software
! 23: * without specific prior written permission.
! 24: *
! 25: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 26: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 27: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 28: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 29: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 30: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 31: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 32: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 33: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 34: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 35: * SUCH DAMAGE.
! 36: *
! 37: * from: Utah Hdr: vmparam.h 1.16 91/01/18
! 38: * @(#)vmparam.h 8.2 (Berkeley) 4/22/94
! 39: */
! 40:
! 41: #ifndef _MIPS_VMPARAM_H_
! 42: #define _MIPS_VMPARAM_H_
! 43:
! 44: /*
! 45: * Machine dependent constants mips processors.
! 46: */
! 47: /*
! 48: * USRTEXT is the start of the user text/data space, while USRSTACK
! 49: * is the top (end) of the user stack.
! 50: */
! 51: #define USRTEXT 0x0000000000400000L
! 52: #define USRSTACK 0x0000000080000000L /* Start of user stack */
! 53:
! 54: /*
! 55: * Virtual memory related constants, all in bytes
! 56: */
! 57: #ifndef MAXTSIZ
! 58: #define MAXTSIZ (64*1024*1024) /* max text size */
! 59: #endif
! 60: #ifndef DFLDSIZ
! 61: #define DFLDSIZ (128*1024*1024) /* initial data size limit */
! 62: #endif
! 63: #ifndef MAXDSIZ
! 64: #define MAXDSIZ (1*1024*1024*1024) /* max data size */
! 65: #endif
! 66: #ifndef DFLSSIZ
! 67: #define DFLSSIZ (2*1024*1024) /* initial stack size limit */
! 68: #endif
! 69: #ifndef MAXSSIZ
! 70: #define MAXSSIZ (32*1024*1024) /* max stack size */
! 71: #endif
! 72:
! 73: #define STACKGAP_RANDOM 256*1024
! 74:
! 75: /*
! 76: * PTEs for mapping user space into the kernel for phyio operations.
! 77: * 16 pte's are enough to cover 8 disks * MAXBSIZE.
! 78: */
! 79: #ifndef USRIOSIZE
! 80: #define USRIOSIZE 32
! 81: #endif
! 82:
! 83: /*
! 84: * PTEs for system V style shared memory.
! 85: * This is basically slop for kmempt which we actually allocate (malloc) from.
! 86: */
! 87: #ifndef SHMMAXPGS
! 88: #define SHMMAXPGS 8192 /* 8mb */
! 89: #endif
! 90:
! 91: #define VM_PHYSSEG_MAX 8 /* Max number of physical memory segments */
! 92: #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
! 93: #define VM_PHYSSEG_NOADD
! 94:
! 95: /* user/kernel map constants */
! 96: #define VM_MIN_ADDRESS ((vaddr_t)0x0000000000000000L)
! 97: #define VM_MAXUSER_ADDRESS ((vaddr_t)0x0000000080000000L)
! 98: #define VM_MAX_ADDRESS ((vaddr_t)0x0000000080000000L)
! 99: #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0xffffffffc0000000L)
! 100: #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xfffffffffffff000L)
! 101:
! 102: #define VM_NFREELIST 1
! 103: #define VM_FREELIST_DEFAULT 0
! 104:
! 105: /* virtual sizes (bytes) for various kernel submaps */
! 106: #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
! 107:
! 108: #if defined(_KERNEL) && !defined(_LOCORE)
! 109: /*
! 110: * pmap-specific data
! 111: */
! 112:
! 113: /* XXX - belongs in pmap.h, but put here because of ordering issues */
! 114: typedef struct pv_entry {
! 115: struct pv_entry *pv_next; /* next pv_entry */
! 116: struct pmap *pv_pmap; /* pmap where mapping lies */
! 117: vaddr_t pv_va; /* virtual address for mapping */
! 118: } *pv_entry_t;
! 119:
! 120: #define __HAVE_VM_PAGE_MD
! 121: struct vm_page_md {
! 122: struct pv_entry pv_ent; /* pv list of this seg */
! 123: };
! 124:
! 125: #define VM_MDPAGE_INIT(pg) \
! 126: do { \
! 127: (pg)->mdpage.pv_ent.pv_next = NULL; \
! 128: (pg)->mdpage.pv_ent.pv_pmap = NULL; \
! 129: (pg)->mdpage.pv_ent.pv_va = 0; \
! 130: } while (0)
! 131:
! 132: #endif /* _KERNEL && !_LOCORE */
! 133:
! 134: #endif /* !_MIPS_VMPARAM_H_ */
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