/* $NetBSD: vmparam.h,v 1.2 2006/07/03 17:01:45 cherry Exp $ */ | |
/*- | |
* Copyright (c) 1990 The Regents of the University of California. | |
* All rights reserved. | |
* | |
* This code is derived from software contributed to Berkeley by | |
* William Jolitz. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions | |
* are met: | |
* 1. Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright | |
* notice, this list of conditions and the following disclaimer in the | |
* documentation and/or other materials provided with the distribution. | |
* 3. Neither the name of the University nor the names of its contributors | |
* may be used to endorse or promote products derived from this software | |
* without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
* SUCH DAMAGE. | |
* | |
* @(#)vmparam.h 5.9 (Berkeley) 5/12/91 | |
*/ | |
#ifndef _VMPARAM_H_ | |
#define _VMPARAM_H_ | |
#include <sys/tree.h> | |
#define USRSTACK VM_MAX_ADDRESS /* XXX: Revisit vm address space. */ | |
/* | |
* Virtual memory related constants, all in bytes | |
*/ | |
#ifndef MAXTSIZ | |
#define MAXTSIZ (1<<30) /* max text size (1G) */ | |
#endif | |
#ifndef DFLDSIZ | |
#define DFLDSIZ (1<<27) /* initial data size (128M) */ | |
#endif | |
#ifndef MAXDSIZ | |
#define MAXDSIZ (1<<30) /* max data size (1G) */ | |
#endif | |
#ifndef DFLSSIZ | |
#define DFLSSIZ (1<<21) /* initial stack size (2M) */ | |
#endif | |
#ifndef MAXSSIZ | |
#define MAXSSIZ (1<<28) /* max stack size (256M) */ | |
#endif | |
#ifndef SGROWSIZ | |
#define SGROWSIZ (128UL*1024) /* amount to grow stack */ | |
#endif | |
/* | |
* PTEs for mapping user space into the kernel for phyio operations. | |
* 64 pte's are enough to cover 8 disks * MAXBSIZE. | |
*/ | |
#ifndef USRIOSIZE | |
#define USRIOSIZE 64 | |
#endif | |
/* | |
* Manipulating region bits of an address. | |
*/ | |
#define IA64_RR_BASE(n) (((u_int64_t) (n)) << 61) | |
#define IA64_RR_MASK(x) ((x) & ((1L << 61) - 1)) | |
#define IA64_PHYS_TO_RR6(x) ((x) | IA64_RR_BASE(6)) | |
#define IA64_PHYS_TO_RR7(x) ((x) | IA64_RR_BASE(7)) | |
#define IA64_ID_PAGE_SHIFT 28 /* 256M */ | |
#define IA64_ID_PAGE_SIZE (1 << IA64_ID_PAGE_SHIFT) | |
#define IA64_ID_PAGE_MASK (IA64_ID_PAGE_SIZE-1) | |
#define IA64_BACKINGSTORE IA64_RR_BASE(4) | |
#define PAGE_SHIFT 14 /* 16K pages by default. */ | |
#define PAGE_SIZE (1 << PAGE_SHIFT) | |
#define PAGE_MASK (PAGE_SIZE - 1) | |
/* user/kernel map constants */ | |
#define VM_MIN_ADDRESS ((vaddr_t)0) | |
#define VM_MAX_ADDRESS ((vaddr_t) IA64_RR_BASE(5)) | |
#define VM_GATEWAY_SIZE PAGE_SIZE | |
#define VM_MAXUSER_ADDRESS (VM_MAX_ADDRESS + VM_GATEWAY_SIZE) | |
#define VM_MIN_KERNEL_ADDRESS VM_MAXUSER_ADDRESS | |
#define VM_MAX_KERNEL_ADDRESS ((vaddr_t) (IA64_RR_BASE(6) - 1)) | |
#define VM_PHYSSEG_MAX 16 /* XXX: */ | |
#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH | |
#define VM_PHYSSEG_NOADD /* no more after vm_mem_init */ | |
#define VM_NFREELIST 1 /* XXX: */ | |
#define VM_FREELIST_DEFAULT 0 /* XXX: */ | |
/* virtual sizes (bytes) for various kernel submaps */ | |
#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) | |
#ifndef _LOCORE | |
/* | |
* pmap-specific data store in the vm_page structure. | |
*/ | |
#define __HAVE_VM_PAGE_MD | |
struct vm_page_md { | |
TAILQ_HEAD(,pv_entry) pv_list; /* pv_entry list */ | |
int pv_list_count; | |
struct simplelock pv_slock; /* lock on this head */ | |
int pvh_attrs; /* page attributes */ | |
}; | |
#define VM_MDPAGE_INIT(pg) \ | |
do { \ | |
TAILQ_INIT(&(pg)->mdpage.pv_list); \ | |
simple_lock_init(&(pg)->mdpage.pv_slock); \ | |
} while (/*CONSTCOND*/0) | |
#endif /*_LOCORE*/ | |
#endif /* _VMPARAM_H_ */ |