1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)vm_extern.h 8.2 (Berkeley) 1/12/94 32 * $FreeBSD$ 33 */ 34 35 #ifndef _VM_EXTERN_H_ 36 #define _VM_EXTERN_H_ 37 38 struct pmap; 39 struct proc; 40 struct vmspace; 41 struct vnode; 42 struct vmem; 43 44 #ifdef _KERNEL 45 struct cdev; 46 struct cdevsw; 47 struct domainset; 48 49 /* These operate on kernel virtual addresses only. */ 50 vm_offset_t kva_alloc(vm_size_t); 51 void kva_free(vm_offset_t, vm_size_t); 52 53 /* These operate on pageable virtual addresses. */ 54 vm_offset_t kmap_alloc_wait(vm_map_t, vm_size_t); 55 void kmap_free_wakeup(vm_map_t, vm_offset_t, vm_size_t); 56 57 /* These operate on virtual addresses backed by memory. */ 58 vm_offset_t kmem_alloc_attr(vm_size_t size, int flags, 59 vm_paddr_t low, vm_paddr_t high, vm_memattr_t memattr); 60 vm_offset_t kmem_alloc_attr_domainset(struct domainset *ds, vm_size_t size, 61 int flags, vm_paddr_t low, vm_paddr_t high, vm_memattr_t memattr); 62 vm_offset_t kmem_alloc_contig(vm_size_t size, int flags, 63 vm_paddr_t low, vm_paddr_t high, u_long alignment, vm_paddr_t boundary, 64 vm_memattr_t memattr); 65 vm_offset_t kmem_alloc_contig_domainset(struct domainset *ds, vm_size_t size, 66 int flags, vm_paddr_t low, vm_paddr_t high, u_long alignment, 67 vm_paddr_t boundary, vm_memattr_t memattr); 68 vm_offset_t kmem_malloc(vm_size_t size, int flags); 69 vm_offset_t kmem_malloc_domainset(struct domainset *ds, vm_size_t size, 70 int flags); 71 void kmem_free(vm_offset_t addr, vm_size_t size); 72 73 /* This provides memory for previously allocated address space. */ 74 int kmem_back(vm_object_t, vm_offset_t, vm_size_t, int); 75 int kmem_back_domain(int, vm_object_t, vm_offset_t, vm_size_t, int); 76 void kmem_unback(vm_object_t, vm_offset_t, vm_size_t); 77 78 /* Bootstrapping. */ 79 void kmem_bootstrap_free(vm_offset_t, vm_size_t); 80 vm_map_t kmem_suballoc(vm_map_t, vm_offset_t *, vm_offset_t *, vm_size_t, 81 boolean_t); 82 void kmem_init(vm_offset_t, vm_offset_t); 83 void kmem_init_zero_region(void); 84 void kmeminit(void); 85 86 int kernacc(void *, int, int); 87 int useracc(void *, int, int); 88 int vm_fault(vm_map_t, vm_offset_t, vm_prot_t, int); 89 void vm_fault_copy_entry(vm_map_t, vm_map_t, vm_map_entry_t, vm_map_entry_t, 90 vm_ooffset_t *); 91 int vm_fault_disable_pagefaults(void); 92 void vm_fault_enable_pagefaults(int save); 93 int vm_fault_hold(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type, 94 int fault_flags, vm_page_t *m_hold); 95 int vm_fault_quick_hold_pages(vm_map_t map, vm_offset_t addr, vm_size_t len, 96 vm_prot_t prot, vm_page_t *ma, int max_count); 97 int vm_forkproc(struct thread *, struct proc *, struct thread *, 98 struct vmspace *, int); 99 void vm_waitproc(struct proc *); 100 int vm_mmap(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t, vm_prot_t, int, 101 objtype_t, void *, vm_ooffset_t); 102 int vm_mmap_object(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t, 103 vm_prot_t, int, vm_object_t, vm_ooffset_t, boolean_t, struct thread *); 104 int vm_mmap_to_errno(int rv); 105 int vm_mmap_cdev(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *, 106 int *, struct cdev *, struct cdevsw *, vm_ooffset_t *, vm_object_t *); 107 int vm_mmap_vnode(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *, int *, 108 struct vnode *, vm_ooffset_t *, vm_object_t *, boolean_t *); 109 void vm_set_page_size(void); 110 void vm_sync_icache(vm_map_t, vm_offset_t, vm_size_t); 111 typedef int (*pmap_pinit_t)(struct pmap *pmap); 112 struct vmspace *vmspace_alloc(vm_offset_t, vm_offset_t, pmap_pinit_t); 113 struct vmspace *vmspace_fork(struct vmspace *, vm_ooffset_t *); 114 int vmspace_exec(struct proc *, vm_offset_t, vm_offset_t); 115 int vmspace_unshare(struct proc *); 116 void vmspace_exit(struct thread *); 117 struct vmspace *vmspace_acquire_ref(struct proc *); 118 void vmspace_free(struct vmspace *); 119 void vmspace_exitfree(struct proc *); 120 void vmspace_switch_aio(struct vmspace *); 121 void vnode_pager_setsize(struct vnode *, vm_ooffset_t); 122 int vslock(void *, size_t); 123 void vsunlock(void *, size_t); 124 struct sf_buf *vm_imgact_map_page(vm_object_t object, vm_ooffset_t offset); 125 void vm_imgact_unmap_page(struct sf_buf *sf); 126 void vm_thread_dispose(struct thread *td); 127 int vm_thread_new(struct thread *td, int pages); 128 u_int vm_active_count(void); 129 u_int vm_inactive_count(void); 130 u_int vm_laundry_count(void); 131 u_int vm_wait_count(void); 132 #endif /* _KERNEL */ 133 #endif /* !_VM_EXTERN_H_ */ 134