From 39e6e65a2c5a3312f365d59f23c469641e049c82 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Wed, 19 Aug 1998 21:32:28 +0000 Subject: Base files --- cpukit/libnetworking/vm/vm_param.h | 165 +++++++++++++++++++++++++++++++++++++ 1 file changed, 165 insertions(+) create mode 100644 cpukit/libnetworking/vm/vm_param.h (limited to 'cpukit/libnetworking/vm/vm_param.h') diff --git a/cpukit/libnetworking/vm/vm_param.h b/cpukit/libnetworking/vm/vm_param.h new file mode 100644 index 0000000000..f1cfca98ec --- /dev/null +++ b/cpukit/libnetworking/vm/vm_param.h @@ -0,0 +1,165 @@ +/* + * 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. + * + * from: @(#)vm_param.h 8.1 (Berkeley) 6/11/93 + * + * + * 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. + * + * $Id$ + */ + +/* + * Machine independent virtual memory parameters. + */ + +#ifndef _VM_PARAM_ +#define _VM_PARAM_ + +#include + +/* + * 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 0 + +/* + * 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. + */ +#ifndef PAGE_SIZE +#define PAGE_SIZE cnt.v_page_size /* size of page */ +#endif +#ifndef PAGE_MASK +#define PAGE_MASK page_mask /* size of page - 1 */ +#endif +#ifndef PAGE_SHIFT +#define PAGE_SHIFT page_shift /* bits to shift for pages */ +#endif + +#endif + +#ifdef KERNEL +extern vm_size_t page_mask; +extern int page_shift; + +#endif + +/* + * CTL_VM identifiers + */ +#define VM_METER 1 /* struct vmmeter */ +#define VM_LOADAVG 2 /* struct loadavg */ +#define VM_V_FREE_MIN 3 /* cnt.v_free_min */ +#define VM_V_FREE_TARGET 4 /* cnt.v_free_target */ +#define VM_V_FREE_RESERVED 5 /* cnt.v_free_reserved */ +#define VM_V_INACTIVE_TARGET 6 /* cnt.v_inactive_target */ +#define VM_V_CACHE_MIN 7 /* cnt.v_cache_max */ +#define VM_V_CACHE_MAX 8 /* cnt.v_cache_min */ +#define VM_V_PAGEOUT_FREE_MIN 9 /* cnt.v_pageout_free_min */ +#define VM_PAGEOUT_ALGORITHM 10 /* pageout algorithm */ +#define VM_SWAPPING_ENABLED 11 /* swapping enabled */ +#define VM_MAXID 12 /* number of valid vm ids */ + +#define CTL_VM_NAMES { \ + { 0, 0 }, \ + { "vmmeter", CTLTYPE_STRUCT }, \ + { "loadavg", CTLTYPE_STRUCT }, \ + { "v_free_min", CTLTYPE_INT }, \ + { "v_free_target", CTLTYPE_INT }, \ + { "v_free_reserved", CTLTYPE_INT }, \ + { "v_inactive_target", CTLTYPE_INT }, \ + { "v_cache_min", CTLTYPE_INT }, \ + { "v_cache_max", CTLTYPE_INT }, \ + { "v_pageout_free_min", CTLTYPE_INT}, \ + { "pageout_algorithm", CTLTYPE_INT}, \ + { "swapping_enabled", CTLTYPE_INT},\ +} + +/* + * 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 + +#ifndef ASSEMBLER +/* + * Convert addresses to pages and vice versa. + * No rounding is used. + */ +#ifdef KERNEL +#define num_pages(x) \ + ((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) >> PAGE_SHIFT)) + +extern vm_size_t mem_size; /* size of physical memory (bytes) */ +extern vm_offset_t first_addr; /* first physical page */ +extern vm_offset_t last_addr; /* last physical page */ +#endif /* KERNEL */ +#endif /* ASSEMBLER */ +#endif /* _VM_PARAM_ */ -- cgit v1.2.3