/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. * Copyright 2018 Joyent, Inc. */ #ifndef _VM_SEG_SPT_H #define _VM_SEG_SPT_H #ifdef __cplusplus extern "C" { #endif #ifndef _ASM #include <sys/types.h> #include <sys/t_lock.h> #include <sys/lgrp.h> /* * Passed data when creating spt segment. */ struct segspt_crargs { struct seg *seg_spt; struct anon_map *amp; uint_t prot; uint_t flags; uint_t szc; }; typedef struct spt_data { struct vnode *spt_vp; struct anon_map *spt_amp; size_t spt_realsize; struct page **spt_ppa; ushort_t *spt_ppa_lckcnt; uint_t spt_prot; kmutex_t spt_lock; size_t spt_pcachecnt; /* # of times in pcache */ uint_t spt_flags; /* Dynamic ISM or regular ISM */ kcondvar_t spt_cv; ushort_t spt_gen; /* only updated for DISM */ /* * Initial memory allocation policy * used during pre-allocation done in shmat() */ lgrp_mem_policy_info_t spt_policy_info; } spt_data_t; /* * Private data for spt_shm segment. */ typedef struct shm_data { struct as *shm_sptas; struct anon_map *shm_amp; spgcnt_t shm_softlockcnt; /* # outstanding lock operations */ struct seg *shm_sptseg; /* pointer to spt segment */ char *shm_vpage; /* indicating locked pages */ spgcnt_t shm_lckpgs; /* # of locked pages per attached seg */ /* * Memory allocation policy after shmat() */ lgrp_mem_policy_info_t shm_policy_info; kmutex_t shm_segfree_syncmtx; /* barrier lock for segspt_shmfree() */ } shm_data_t; #define DISM_PG_LOCKED 0x1 /* DISM page is locked */ #define DISM_PPA_CHANGED 0x2 /* DISM new lock, need to rebuild ppa */ #define DISM_LOCK_MAX 0xfffe /* max number of locks per DISM page */ #endif #ifdef _KERNEL #ifndef _ASM /* * Functions used in shm.c to call ISM. */ int sptcreate(size_t size, struct seg **sptseg, struct anon_map *amp, uint_t prot, uint_t flags, uint_t szc); void sptdestroy(struct as *, struct anon_map *); int segspt_shmattach(struct seg **, void *); #define isspt(sp) ((sp)->shm_sptinfo ? (sp)->shm_sptinfo->sptas : NULL) #define spt_locked(a) ((a) & SHM_SHARE_MMU) #define spt_pageable(a) ((a) & SHM_PAGEABLE) #define spt_invalid(a) (spt_locked((a)) && spt_pageable((a))) /* * This can be applied to a segment with seg->s_ops == &segspt_shmops * to determine the real size of the ISM segment. */ #define spt_realsize(seg) (((struct spt_data *)(((struct shm_data *)\ ((seg)->s_data))->shm_sptseg->s_data))->spt_realsize) /* * This can be applied to a segment with seg->s_ops == &segspt_ops * to determine the flags of the {D}ISM segment. */ #define spt_flags(seg) (((struct spt_data *)((seg)->s_data))->spt_flags) /* * For large page support */ extern int segvn_anypgsz; #endif /* * In a 64-bit address space, we'll try to put ISM segments between * PREDISM_BASE and PREDISM_BOUND. The HAT may use these constants to * predict that a VA is contained by an ISM segment, which may optimize * translation. The range must _only_ be treated as advisory; ISM segments * may fall outside of the range, and non-ISM segments may be contained * within the range. * In order to avoid collision between ISM/DISM addresses with e.g. * process heap addresses we will try to put ISM/DISM segments above * PREDISM_1T_BASESHIFT (1T). * The HAT is still expecting that any VA larger than PREDISM_BASESHIFT * may belong to ISM/DISM (so on tlb miss it will probe first for 4M * translation) */ #define PREDISM_BASESHIFT 33 #define PREDISM_1T_BASESHIFT 40 #define PREDISM_BASE ((uintptr_t)1 << PREDISM_BASESHIFT) #define PREDISM_1T_BASE ((uintptr_t)1 << PREDISM_1T_BASESHIFT) #define PREDISM_BOUND ((uintptr_t)1 << 63) #endif /* _KERNEL */ #ifdef __cplusplus } #endif #endif /* _VM_SEG_SPT_H */