1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2002 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate /* 31*0Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988 32*0Sstevel@tonic-gate * The Regents of the University of California 33*0Sstevel@tonic-gate * All Rights Reserved 34*0Sstevel@tonic-gate * 35*0Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from 36*0Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its 37*0Sstevel@tonic-gate * contributors. 38*0Sstevel@tonic-gate */ 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #ifndef _VM_PVN_H 41*0Sstevel@tonic-gate #define _VM_PVN_H 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate #include <sys/buf.h> 46*0Sstevel@tonic-gate #include <vm/seg.h> 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate #ifdef __cplusplus 49*0Sstevel@tonic-gate extern "C" { 50*0Sstevel@tonic-gate #endif 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate #ifdef _KERNEL 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate /* 55*0Sstevel@tonic-gate * VM - paged vnode. 56*0Sstevel@tonic-gate * 57*0Sstevel@tonic-gate * The VM system manages memory as a cache of paged vnodes. 58*0Sstevel@tonic-gate * This file desribes the interfaces to common subroutines 59*0Sstevel@tonic-gate * used to help implement the VM/file system routines. 60*0Sstevel@tonic-gate */ 61*0Sstevel@tonic-gate 62*0Sstevel@tonic-gate struct page *pvn_read_kluster(struct vnode *vp, u_offset_t off, 63*0Sstevel@tonic-gate struct seg *seg, caddr_t addr, u_offset_t *offp, 64*0Sstevel@tonic-gate size_t *lenp, u_offset_t vp_off, size_t vp_len, 65*0Sstevel@tonic-gate int isra); 66*0Sstevel@tonic-gate struct page *pvn_write_kluster(struct vnode *vp, struct page *pp, 67*0Sstevel@tonic-gate u_offset_t *offp, size_t *lenp, u_offset_t vp_off, 68*0Sstevel@tonic-gate size_t vp_len, int flags); 69*0Sstevel@tonic-gate void pvn_read_done(struct page *plist, int flags); 70*0Sstevel@tonic-gate void pvn_write_done(struct page *plist, int flags); 71*0Sstevel@tonic-gate void pvn_io_done(struct page *plist); 72*0Sstevel@tonic-gate int pvn_vplist_dirty(struct vnode *vp, u_offset_t off, 73*0Sstevel@tonic-gate int (*putapage)(vnode_t *, struct page *, u_offset_t *, 74*0Sstevel@tonic-gate size_t *, int, cred_t *), 75*0Sstevel@tonic-gate int flags, struct cred *cred); 76*0Sstevel@tonic-gate int pvn_getdirty(struct page *pp, int flags); 77*0Sstevel@tonic-gate void pvn_vpzero(struct vnode *vp, u_offset_t vplen, size_t zbytes); 78*0Sstevel@tonic-gate int pvn_getpages( 79*0Sstevel@tonic-gate int (*getpage)(vnode_t *, u_offset_t, size_t, uint_t *, 80*0Sstevel@tonic-gate struct page *[], size_t, struct seg *, 81*0Sstevel@tonic-gate caddr_t, enum seg_rw, cred_t *), 82*0Sstevel@tonic-gate struct vnode *vp, u_offset_t off, size_t len, 83*0Sstevel@tonic-gate uint_t *protp, struct page **pl, size_t plsz, 84*0Sstevel@tonic-gate struct seg *seg, caddr_t addr, enum seg_rw rw, 85*0Sstevel@tonic-gate struct cred *cred); 86*0Sstevel@tonic-gate void pvn_plist_init(struct page *pp, struct page **pl, size_t plsz, 87*0Sstevel@tonic-gate u_offset_t off, size_t io_len, enum seg_rw rw); 88*0Sstevel@tonic-gate void pvn_init(void); 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate /* 91*0Sstevel@tonic-gate * When requesting pages from the getpage routines, pvn_getpages will 92*0Sstevel@tonic-gate * allocate space to return PVN_GETPAGE_NUM pages which map PVN_GETPAGE_SZ 93*0Sstevel@tonic-gate * worth of bytes. These numbers are chosen to be the minimum of the max's 94*0Sstevel@tonic-gate * given in terms of bytes and pages. 95*0Sstevel@tonic-gate */ 96*0Sstevel@tonic-gate #define PVN_MAX_GETPAGE_SZ 0x10000 /* getpage size limit */ 97*0Sstevel@tonic-gate #define PVN_MAX_GETPAGE_NUM 0x8 /* getpage page limit */ 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate #if PVN_MAX_GETPAGE_SZ > PVN_MAX_GETPAGE_NUM * PAGESIZE 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate #define PVN_GETPAGE_SZ ptob(PVN_MAX_GETPAGE_NUM) 102*0Sstevel@tonic-gate #define PVN_GETPAGE_NUM PVN_MAX_GETPAGE_NUM 103*0Sstevel@tonic-gate 104*0Sstevel@tonic-gate #else 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate #define PVN_GETPAGE_SZ PVN_MAX_GETPAGE_SZ 107*0Sstevel@tonic-gate #define PVN_GETPAGE_NUM btop(PVN_MAX_GETPAGE_SZ) 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate #endif 110*0Sstevel@tonic-gate 111*0Sstevel@tonic-gate #endif /* _KERNEL */ 112*0Sstevel@tonic-gate 113*0Sstevel@tonic-gate #ifdef __cplusplus 114*0Sstevel@tonic-gate } 115*0Sstevel@tonic-gate #endif 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate #endif /* _VM_PVN_H */ 118