xref: /freebsd/sys/vm/vm_extern.h (revision d356ca0c3ffa363d5bfbc237b44f53b3f88fd415)
1  /*-
2   * Copyright (c) 1992, 1993
3   *	The Regents of the University of California.  All rights reserved.
4   *
5   * Redistribution and use in source and binary forms, with or without
6   * modification, are permitted provided that the following conditions
7   * are met:
8   * 1. Redistributions of source code must retain the above copyright
9   *    notice, this list of conditions and the following disclaimer.
10   * 2. Redistributions in binary form must reproduce the above copyright
11   *    notice, this list of conditions and the following disclaimer in the
12   *    documentation and/or other materials provided with the distribution.
13   * 4. Neither the name of the University nor the names of its contributors
14   *    may be used to endorse or promote products derived from this software
15   *    without specific prior written permission.
16   *
17   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27   * SUCH DAMAGE.
28   *
29   *	@(#)vm_extern.h	8.2 (Berkeley) 1/12/94
30   * $FreeBSD$
31   */
32  
33  #ifndef _VM_EXTERN_H_
34  #define	_VM_EXTERN_H_
35  
36  struct pmap;
37  struct proc;
38  struct vmspace;
39  struct vnode;
40  struct vmem;
41  
42  #ifdef _KERNEL
43  struct cdev;
44  struct cdevsw;
45  
46  /* These operate on kernel virtual addresses only. */
47  vm_offset_t kva_alloc(vm_size_t);
48  void kva_free(vm_offset_t, vm_size_t);
49  
50  /* These operate on pageable virtual addresses. */
51  vm_offset_t kmap_alloc_wait(vm_map_t, vm_size_t);
52  void kmap_free_wakeup(vm_map_t, vm_offset_t, vm_size_t);
53  
54  /* These operate on virtual addresses backed by memory. */
55  vm_offset_t kmem_alloc_attr(struct vmem *, vm_size_t size, int flags,
56      vm_paddr_t low, vm_paddr_t high, vm_memattr_t memattr);
57  vm_offset_t kmem_alloc_contig(struct vmem *, vm_size_t size, int flags,
58      vm_paddr_t low, vm_paddr_t high, u_long alignment, vm_paddr_t boundary,
59      vm_memattr_t memattr);
60  vm_offset_t kmem_malloc(struct vmem *, vm_size_t size, int flags);
61  void kmem_free(struct vmem *, vm_offset_t, vm_size_t);
62  
63  /* This provides memory for previously allocated address space. */
64  int kmem_back(vm_object_t, vm_offset_t, vm_size_t, int);
65  void kmem_unback(vm_object_t, vm_offset_t, vm_size_t);
66  
67  /* Bootstrapping. */
68  vm_map_t kmem_suballoc(vm_map_t, vm_offset_t *, vm_offset_t *, vm_size_t,
69      boolean_t);
70  void kmem_init(vm_offset_t, vm_offset_t);
71  void kmem_init_zero_region(void);
72  void kmeminit(void);
73  
74  void swapout_procs(int);
75  int kernacc(void *, int, int);
76  int useracc(void *, int, int);
77  int vm_fault(vm_map_t, vm_offset_t, vm_prot_t, int);
78  void vm_fault_copy_entry(vm_map_t, vm_map_t, vm_map_entry_t, vm_map_entry_t,
79      vm_ooffset_t *);
80  int vm_fault_disable_pagefaults(void);
81  void vm_fault_enable_pagefaults(int save);
82  int vm_fault_hold(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type,
83      int fault_flags, vm_page_t *m_hold);
84  int vm_fault_quick_hold_pages(vm_map_t map, vm_offset_t addr, vm_size_t len,
85      vm_prot_t prot, vm_page_t *ma, int max_count);
86  int vm_forkproc(struct thread *, struct proc *, struct thread *,
87      struct vmspace *, int);
88  void vm_waitproc(struct proc *);
89  int vm_mmap(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t, vm_prot_t, int,
90      objtype_t, void *, vm_ooffset_t);
91  int vm_mmap_object(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t,
92      vm_prot_t, int, vm_object_t, vm_ooffset_t, boolean_t, struct thread *);
93  int vm_mmap_to_errno(int rv);
94  int vm_mmap_cdev(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *,
95      int *, struct cdev *, struct cdevsw *, vm_ooffset_t *, vm_object_t *);
96  int vm_mmap_vnode(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *, int *,
97      struct vnode *, vm_ooffset_t *, vm_object_t *, boolean_t *);
98  void vm_set_page_size(void);
99  void vm_sync_icache(vm_map_t, vm_offset_t, vm_size_t);
100  typedef int (*pmap_pinit_t)(struct pmap *pmap);
101  struct vmspace *vmspace_alloc(vm_offset_t, vm_offset_t, pmap_pinit_t);
102  struct vmspace *vmspace_fork(struct vmspace *, vm_ooffset_t *);
103  int vmspace_exec(struct proc *, vm_offset_t, vm_offset_t);
104  int vmspace_unshare(struct proc *);
105  void vmspace_exit(struct thread *);
106  struct vmspace *vmspace_acquire_ref(struct proc *);
107  void vmspace_free(struct vmspace *);
108  void vmspace_exitfree(struct proc *);
109  void vmspace_switch_aio(struct vmspace *);
110  void vnode_pager_setsize(struct vnode *, vm_ooffset_t);
111  int vslock(void *, size_t);
112  void vsunlock(void *, size_t);
113  struct sf_buf *vm_imgact_map_page(vm_object_t object, vm_ooffset_t offset);
114  void vm_imgact_unmap_page(struct sf_buf *sf);
115  void vm_thread_dispose(struct thread *td);
116  int vm_thread_new(struct thread *td, int pages);
117  int vm_mlock(struct proc *, struct ucred *, const void *, size_t);
118  #endif				/* _KERNEL */
119  #endif				/* !_VM_EXTERN_H_ */
120