156 lines
5.1 KiB
C
156 lines
5.1 KiB
C
/* $NetBSD: vmparam.h,v 1.39 2008/01/02 11:48:29 ad Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This software was developed by the Computer Systems Engineering group
|
|
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
|
* contributed to Berkeley.
|
|
*
|
|
* 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, Lawrence Berkeley Laboratory.
|
|
*
|
|
* 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 8.1 (Berkeley) 6/11/93
|
|
*/
|
|
|
|
#ifndef _SPARC_VMPARAM_H_
|
|
#define _SPARC_VMPARAM_H_
|
|
|
|
/*
|
|
* Machine dependent constants for SPARC
|
|
*/
|
|
|
|
#include <machine/cpuconf.h>
|
|
|
|
/*
|
|
* Sun4 systems have a 8K page size. All other platforms have a
|
|
* 4K page size. We need to define these upper and lower limits
|
|
* for machine-independent code. We also try to make PAGE_SIZE,
|
|
* PAGE_SHIFT, and PAGE_MASK into compile-time constants, if we can.
|
|
*
|
|
* XXX Should garbage-collect the version of this from <machine/param.h>.
|
|
*/
|
|
#define PAGE_SHIFT_SUN4 13
|
|
#define PAGE_SHIFT_SUN4CM 12
|
|
|
|
#define MIN_PAGE_SIZE (1 << PAGE_SHIFT_SUN4CM)
|
|
#define MAX_PAGE_SIZE (1 << PAGE_SHIFT_SUN4)
|
|
|
|
#if CPU_NTYPES != 0 && !defined(SUN4)
|
|
#define PAGE_SHIFT PAGE_SHIFT_SUN4CM
|
|
#define PAGE_SIZE (1 << PAGE_SHIFT)
|
|
#define PAGE_MASK (PAGE_SIZE - 1)
|
|
#elif CPU_NTYPES == 1 && defined(SUN4)
|
|
#define PAGE_SHIFT PAGE_SHIFT_SUN4
|
|
#define PAGE_SIZE (1 << PAGE_SHIFT)
|
|
#define PAGE_MASK (PAGE_SIZE - 1)
|
|
#endif
|
|
|
|
/*
|
|
* USRSTACK is the top (end) of the user stack.
|
|
*/
|
|
#define USRSTACK KERNBASE /* Start of user stack */
|
|
|
|
/*
|
|
* Virtual memory related constants, all in bytes
|
|
*/
|
|
#ifndef MAXTSIZ
|
|
#define MAXTSIZ (64*1024*1024) /* max text size */
|
|
#endif
|
|
#ifndef DFLDSIZ
|
|
#define DFLDSIZ (64*1024*1024) /* initial data size limit */
|
|
#endif
|
|
#ifndef MAXDSIZ
|
|
#define MAXDSIZ (512*1024*1024) /* max data size */
|
|
#endif
|
|
#ifndef DFLSSIZ
|
|
#define DFLSSIZ (8*1024*1024) /* initial stack size limit */
|
|
#endif
|
|
#ifndef MAXSSIZ
|
|
#define MAXSSIZ (32*1024*1024) /* max stack size */
|
|
#endif
|
|
|
|
/*
|
|
* Size of shared memory map
|
|
*/
|
|
#ifndef SHMMAXPGS
|
|
#define SHMMAXPGS 1024
|
|
#endif
|
|
|
|
/*
|
|
* Mach derived constants
|
|
*/
|
|
|
|
/*
|
|
* User/kernel map constants. Note that sparc/vaddrs.h defines the
|
|
* IO space virtual base, which must be the same as VM_MAX_KERNEL_ADDRESS:
|
|
* tread with care.
|
|
*/
|
|
#define VM_MIN_ADDRESS ((vaddr_t)0)
|
|
#define VM_MAX_ADDRESS ((vaddr_t)KERNBASE)
|
|
#define VM_MAXUSER_ADDRESS ((vaddr_t)KERNBASE)
|
|
#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE)
|
|
#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)KERNEND)
|
|
|
|
#define VM_PHYSSEG_MAX 32 /* up to 32 segments */
|
|
#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
|
|
#define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */
|
|
|
|
#define VM_NFREELIST 1
|
|
#define VM_FREELIST_DEFAULT 0
|
|
|
|
#define __HAVE_VM_PAGE_MD
|
|
|
|
/*
|
|
* For each managed physical page, there is a list of all currently
|
|
* valid virtual mappings of that page. Since there is usually one
|
|
* (or zero) mapping per page, the table begins with an initial entry,
|
|
* rather than a pointer; this head entry is empty iff its pv_pmap
|
|
* field is NULL.
|
|
*/
|
|
struct vm_page_md {
|
|
struct pvlist {
|
|
struct pvlist *pv_next; /* next pvlist, if any */
|
|
struct pmap *pv_pmap; /* pmap of this va */
|
|
vaddr_t pv_va; /* virtual address */
|
|
int pv_flags; /* flags (below) */
|
|
} pvlisthead;
|
|
};
|
|
#define VM_MDPAGE_PVHEAD(pg) (&(pg)->mdpage.pvlisthead)
|
|
|
|
#define VM_MDPAGE_INIT(pg) do { \
|
|
(pg)->mdpage.pvlisthead.pv_next = NULL; \
|
|
(pg)->mdpage.pvlisthead.pv_pmap = NULL; \
|
|
(pg)->mdpage.pvlisthead.pv_va = 0; \
|
|
(pg)->mdpage.pvlisthead.pv_flags = 0; \
|
|
} while(/*CONSTCOND*/0)
|
|
|
|
#endif /* _SPARC_VMPARAM_H_ */
|