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 2005 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_SEG_DEV_H 41*0Sstevel@tonic-gate #define _VM_SEG_DEV_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/project.h> 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate #ifdef __cplusplus 48*0Sstevel@tonic-gate extern "C" { 49*0Sstevel@tonic-gate #endif 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate /* 52*0Sstevel@tonic-gate * Structure whose pointer is passed to the segdev_create routine 53*0Sstevel@tonic-gate */ 54*0Sstevel@tonic-gate struct segdev_crargs { 55*0Sstevel@tonic-gate offset_t offset; /* starting offset */ 56*0Sstevel@tonic-gate int (*mapfunc)(dev_t dev, off_t off, int prot); /* map function */ 57*0Sstevel@tonic-gate dev_t dev; /* device number */ 58*0Sstevel@tonic-gate uchar_t type; /* type of sharing done */ 59*0Sstevel@tonic-gate uchar_t prot; /* protection */ 60*0Sstevel@tonic-gate uchar_t maxprot; /* maximum protection */ 61*0Sstevel@tonic-gate uint_t hat_attr; /* hat attr */ 62*0Sstevel@tonic-gate uint_t hat_flags; /* currently, hat_flags is used ONLY for */ 63*0Sstevel@tonic-gate /* HAT_LOAD_NOCONSIST; in future, it can be */ 64*0Sstevel@tonic-gate /* expanded to include any flags that are */ 65*0Sstevel@tonic-gate /* not already part of hat_attr */ 66*0Sstevel@tonic-gate void *devmap_data; /* devmap_handle private data */ 67*0Sstevel@tonic-gate }; 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate /* 70*0Sstevel@tonic-gate * (Semi) private data maintained by the seg_dev driver per segment mapping 71*0Sstevel@tonic-gate * 72*0Sstevel@tonic-gate * The segment lock is necessary to protect fields that are modified 73*0Sstevel@tonic-gate * when the "read" version of the address space lock is held. This lock 74*0Sstevel@tonic-gate * is not needed when the segment operation has the "write" version of 75*0Sstevel@tonic-gate * the address space lock (it would be redundant). 76*0Sstevel@tonic-gate * 77*0Sstevel@tonic-gate * The following fields in segdev_data are read-only when the address 78*0Sstevel@tonic-gate * space is "read" locked, and don't require the segment lock: 79*0Sstevel@tonic-gate * 80*0Sstevel@tonic-gate * vp 81*0Sstevel@tonic-gate * offset 82*0Sstevel@tonic-gate * mapfunc 83*0Sstevel@tonic-gate * maxprot 84*0Sstevel@tonic-gate */ 85*0Sstevel@tonic-gate struct segdev_data { 86*0Sstevel@tonic-gate offset_t offset; /* device offset for start of mapping */ 87*0Sstevel@tonic-gate kmutex_t lock; /* protects segdev_data */ 88*0Sstevel@tonic-gate int (*mapfunc)(dev_t dev, off_t off, int prot); 89*0Sstevel@tonic-gate struct vnode *vp; /* vnode associated with device */ 90*0Sstevel@tonic-gate uchar_t pageprot; /* true if per page protections present */ 91*0Sstevel@tonic-gate uchar_t prot; /* current segment prot if pageprot == 0 */ 92*0Sstevel@tonic-gate uchar_t maxprot; /* maximum segment protections */ 93*0Sstevel@tonic-gate uchar_t type; /* type of sharing done */ 94*0Sstevel@tonic-gate struct vpage *vpage; /* per-page information, if needed */ 95*0Sstevel@tonic-gate uint_t hat_attr; /* hat attr - pass to attr in hat_devload */ 96*0Sstevel@tonic-gate uint_t hat_flags; /* set HAT_LOAD_NOCONSIST flag in hat_devload */ 97*0Sstevel@tonic-gate /* see comments above in segdev_crargs */ 98*0Sstevel@tonic-gate size_t softlockcnt; /* # of SOFTLOCKED in seg */ 99*0Sstevel@tonic-gate void *devmap_data; /* devmap_handle private data */ 100*0Sstevel@tonic-gate }; 101*0Sstevel@tonic-gate 102*0Sstevel@tonic-gate /* Direct physical-userland mapping, without occupying kernel address space */ 103*0Sstevel@tonic-gate #define DEVMAP_PMEM_COOKIE ((ddi_umem_cookie_t)0x2) 104*0Sstevel@tonic-gate 105*0Sstevel@tonic-gate /* 106*0Sstevel@tonic-gate * pmem_cookie: 107*0Sstevel@tonic-gate * Records physical memory pages to be exported to userland. 108*0Sstevel@tonic-gate */ 109*0Sstevel@tonic-gate struct devmap_pmem_cookie { 110*0Sstevel@tonic-gate pgcnt_t dp_npages; /* number of allocated mem pages */ 111*0Sstevel@tonic-gate page_t **dp_pparray; /* pages allocated for this cookie */ 112*0Sstevel@tonic-gate vnode_t *dp_vnp; /* vnode associated with this cookie */ 113*0Sstevel@tonic-gate kproject_t *dp_projp; /* project ptr for resource ctl */ 114*0Sstevel@tonic-gate }; 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate #ifdef _KERNEL 117*0Sstevel@tonic-gate 118*0Sstevel@tonic-gate extern void segdev_init(void); 119*0Sstevel@tonic-gate 120*0Sstevel@tonic-gate extern int segdev_create(struct seg *, void *); 121*0Sstevel@tonic-gate 122*0Sstevel@tonic-gate extern int segdev_copyto(struct seg *, caddr_t, const void *, void *, size_t); 123*0Sstevel@tonic-gate extern int segdev_copyfrom(struct seg *, caddr_t, const void *, void *, size_t); 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate #endif /* _KERNEL */ 126*0Sstevel@tonic-gate 127*0Sstevel@tonic-gate #ifdef __cplusplus 128*0Sstevel@tonic-gate } 129*0Sstevel@tonic-gate #endif 130*0Sstevel@tonic-gate 131*0Sstevel@tonic-gate #endif /* _VM_SEG_DEV_H */ 132