180 lines
6.5 KiB
C
180 lines
6.5 KiB
C
/* $NetBSD: vmparam.h,v 1.28 2004/03/22 05:25:22 matt Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department and Ralph Campbell.
|
|
*
|
|
* 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.
|
|
*
|
|
* from: Utah $Hdr: vmparam.h 1.16 91/01/18$
|
|
*
|
|
* @(#)vmparam.h 8.2 (Berkeley) 4/22/94
|
|
*/
|
|
/*
|
|
* Copyright (c) 1988 University of Utah.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department and Ralph Campbell.
|
|
*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*
|
|
* from: Utah $Hdr: vmparam.h 1.16 91/01/18$
|
|
*
|
|
* @(#)vmparam.h 8.2 (Berkeley) 4/22/94
|
|
*/
|
|
|
|
#ifndef _ALPHA_VMPARAM_H_
|
|
#define _ALPHA_VMPARAM_H_
|
|
|
|
/*
|
|
* Machine dependent constants for Alpha.
|
|
*/
|
|
|
|
/*
|
|
* All systypes currently supported by NetBSD/alpha have an 8K pages.
|
|
* Override the PAGE_* definitions to be compile-time constants.
|
|
*/
|
|
#define PAGE_SHIFT 13
|
|
#define PAGE_SIZE (1 << PAGE_SHIFT)
|
|
#define PAGE_MASK (PAGE_SIZE - 1)
|
|
|
|
/*
|
|
* USRSTACK is the top (end) of the user stack.
|
|
*
|
|
* Digital UNIX (formerly DEC OSF/1) places the stack below the
|
|
* text segment (i.e. growing downward from 4G). We may want to
|
|
* consider doing that at some point, but it might require changes
|
|
* to the exec code.
|
|
*/
|
|
#define USRSTACK ((vaddr_t)0x0000000200000000) /* 8G */
|
|
|
|
/*
|
|
* Virtual memory related constants, all in bytes
|
|
*/
|
|
#ifndef MAXTSIZ
|
|
#define MAXTSIZ (1<<30) /* max text size (1G) */
|
|
#endif
|
|
#ifndef DFLDSIZ
|
|
#define DFLDSIZ (1<<28) /* initial data size (256M) */
|
|
#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<<25) /* max stack size (32M) */
|
|
#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
|
|
|
|
/*
|
|
* PTEs for system V style shared memory.
|
|
* This is basically slop for kmempt which we actually allocate (malloc) from.
|
|
*/
|
|
#ifndef SHMMAXPGS
|
|
#define SHMMAXPGS 1024 /* 8mb */
|
|
#endif
|
|
|
|
/*
|
|
* Mach derived constants
|
|
*/
|
|
|
|
/* user/kernel map constants */
|
|
#define VM_MIN_ADDRESS ((vaddr_t)ALPHA_USEG_BASE) /* 0 */
|
|
#define VM_MAXUSER_ADDRESS ((vaddr_t)(ALPHA_USEG_END + 1L)) /* 4T */
|
|
#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
|
|
#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)ALPHA_K1SEG_BASE)
|
|
#define VM_MAX_KERNEL_ADDRESS trunc_page((vaddr_t)ALPHA_K1SEG_END)
|
|
|
|
/* virtual sizes (bytes) for various kernel submaps */
|
|
#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
|
|
|
|
/* some Alpha-specific constants */
|
|
#define VPTBASE ((vaddr_t)0xfffffffc00000000) /* Virt. pg table */
|
|
|
|
#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
|
|
#define VM_FREELIST_DEFAULT 0
|
|
|
|
/*
|
|
* pmap-specific data store in the vm_page structure.
|
|
*/
|
|
#define __HAVE_VM_PAGE_MD
|
|
struct vm_page_md {
|
|
struct pv_entry *pvh_list; /* pv_entry list */
|
|
struct simplelock pvh_slock; /* lock on this head */
|
|
int pvh_attrs; /* page attributes */
|
|
};
|
|
|
|
#define VM_MDPAGE_INIT(pg) \
|
|
do { \
|
|
(pg)->mdpage.pvh_list = NULL; \
|
|
simple_lock_init(&(pg)->mdpage.pvh_slock); \
|
|
} while (/*CONSTCOND*/0)
|
|
|
|
#endif /* ! _ALPHA_VMPARAM_H_ */
|