diff options
Diffstat (limited to 'sys/uvm')
| -rw-r--r-- | sys/uvm/uvm_param.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/sys/uvm/uvm_param.h b/sys/uvm/uvm_param.h new file mode 100644 index 00000000000..cee4d69bca5 --- /dev/null +++ b/sys/uvm/uvm_param.h @@ -0,0 +1,174 @@ +/* $OpenBSD: uvm_param.h,v 1.1 2001/11/06 00:30:38 art Exp $ */ +/* $NetBSD: uvm_param.h,v 1.1 2000/06/26 14:59:04 mrg Exp $ */ + +/* + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * The Mach Operating System project at Carnegie-Mellon University. + * + * 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. + * + * @(#)vm_param.h 8.2 (Berkeley) 1/9/95 + * + * + * Copyright (c) 1987, 1990 Carnegie-Mellon University. + * All rights reserved. + * + * Authors: Avadis Tevanian, Jr., Michael Wayne Young + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +/* + * Machine independent virtual memory parameters. + */ + +#ifndef _VM_PARAM_ +#define _VM_PARAM_ + +#include <machine/vmparam.h> + +/* + * This belongs in types.h, but breaks too many existing programs. + */ +typedef int boolean_t; +#ifndef TRUE +#define TRUE 1 +#endif +#ifndef FALSE +#define FALSE 0 +#endif + +/* + * The machine independent pages are refered to as PAGES. A page + * is some number of hardware pages, depending on the target machine. + */ +#define DEFAULT_PAGE_SIZE 4096 + +#if defined(_KERNEL) && !defined(PAGE_SIZE) +/* + * All references to the size of a page should be done with PAGE_SIZE + * or PAGE_SHIFT. The fact they are variables is hidden here so that + * we can easily make them constant if we so desire. + */ +#define PAGE_SIZE uvmexp.pagesize /* size of page */ +#define PAGE_MASK uvmexp.pagemask /* size of page - 1 */ +#define PAGE_SHIFT uvmexp.pageshift /* bits to shift for pages */ +#endif /* _KERNEL */ + +/* + * CTL_VM identifiers + */ +#define VM_METER 1 /* struct vmmeter */ +#define VM_LOADAVG 2 /* struct loadavg */ +#define VM_PSSTRINGS 3 /* PSSTRINGS */ +#define VM_UVMEXP 4 /* struct uvmexp */ +#define VM_SWAPENCRYPT 5 /* int */ +#define VM_NKMEMPAGES 6 /* int - # kmem_map pages */ +#define VM_MAXID 7 /* number of valid vm ids */ + +#define CTL_VM_NAMES { \ + { 0, 0 }, \ + { "vmmeter", CTLTYPE_STRUCT }, \ + { "loadavg", CTLTYPE_STRUCT }, \ + { "psstrings", CTLTYPE_STRUCT }, \ + { "uvmexp", CTLTYPE_STRUCT }, \ + { "swapencrypt", CTLTYPE_NODE }, \ + { "nkmempages", CTLTYPE_INT }, \ +} + +struct _ps_strings { + void *val; +}; + +#define SWAPSKIPBYTES 8192 /* never use at the start of a swap space */ + +/* + * Return values from the VM routines. + */ +#define KERN_SUCCESS 0 +#define KERN_INVALID_ADDRESS 1 +#define KERN_PROTECTION_FAILURE 2 +#define KERN_NO_SPACE 3 +#define KERN_INVALID_ARGUMENT 4 +#define KERN_FAILURE 5 +#define KERN_RESOURCE_SHORTAGE 6 +#define KERN_NOT_RECEIVER 7 +#define KERN_NO_ACCESS 8 +#define KERN_PAGES_LOCKED 9 + +#ifndef ASSEMBLER +/* + * Convert addresses to pages and vice versa. + * No rounding is used. + */ +#ifdef _KERNEL +#define atop(x) (((unsigned long)(x)) >> PAGE_SHIFT) +#define ptoa(x) ((vaddr_t)((vaddr_t)(x) << PAGE_SHIFT)) + +/* + * Round off or truncate to the nearest page. These will work + * for either addresses or counts (i.e., 1 byte rounds to 1 page). + */ +#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) +#define trunc_page(x) ((x) & ~PAGE_MASK) + +extern psize_t mem_size; /* size of physical memory (bytes) */ + +#else +/* out-of-kernel versions of round_page and trunc_page */ +#define round_page(x) \ + ((((vaddr_t)(x) + (vm_page_size - 1)) / vm_page_size) * \ + vm_page_size) +#define trunc_page(x) \ + ((((vaddr_t)(x)) / vm_page_size) * vm_page_size) + +#endif /* _KERNEL */ +#endif /* ASSEMBLER */ +#endif /* _VM_PARAM_ */ |