2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
31 * @(#)vm_extern.h 8.2 (Berkeley) 1/12/94
48 /* These operate on kernel virtual addresses only. */
49 vm_offset_t kva_alloc(vm_size_t);
50 void kva_free(vm_offset_t, vm_size_t);
52 /* These operate on pageable virtual addresses. */
53 vm_offset_t kmap_alloc_wait(vm_map_t, vm_size_t);
54 void kmap_free_wakeup(vm_map_t, vm_offset_t, vm_size_t);
56 /* These operate on virtual addresses backed by memory. */
57 vm_offset_t kmem_alloc_attr(struct vmem *, vm_size_t size, int flags,
58 vm_paddr_t low, vm_paddr_t high, vm_memattr_t memattr);
59 vm_offset_t kmem_alloc_contig(struct vmem *, vm_size_t size, int flags,
60 vm_paddr_t low, vm_paddr_t high, u_long alignment, vm_paddr_t boundary,
61 vm_memattr_t memattr);
62 vm_offset_t kmem_malloc(struct vmem *, vm_size_t size, int flags);
63 void kmem_free(struct vmem *, vm_offset_t, vm_size_t);
65 /* This provides memory for previously allocated address space. */
66 int kmem_back(vm_object_t, vm_offset_t, vm_size_t, int);
67 void kmem_unback(vm_object_t, vm_offset_t, vm_size_t);
70 vm_map_t kmem_suballoc(vm_map_t, vm_offset_t *, vm_offset_t *, vm_size_t,
72 void kmem_init(vm_offset_t, vm_offset_t);
73 void kmem_init_zero_region(void);
76 int kernacc(void *, int, int);
77 int useracc(void *, int, int);
78 int vm_fault(vm_map_t, vm_offset_t, vm_prot_t, int);
79 void vm_fault_copy_entry(vm_map_t, vm_map_t, vm_map_entry_t, vm_map_entry_t,
81 int vm_fault_disable_pagefaults(void);
82 void vm_fault_enable_pagefaults(int save);
83 int vm_fault_hold(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type,
84 int fault_flags, vm_page_t *m_hold);
85 int vm_fault_quick_hold_pages(vm_map_t map, vm_offset_t addr, vm_size_t len,
86 vm_prot_t prot, vm_page_t *ma, int max_count);
87 int vm_forkproc(struct thread *, struct proc *, struct thread *,
88 struct vmspace *, int);
89 void vm_waitproc(struct proc *);
90 int vm_mmap(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t, vm_prot_t, int,
91 objtype_t, void *, vm_ooffset_t);
92 int vm_mmap_object(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t,
93 vm_prot_t, int, vm_object_t, vm_ooffset_t, boolean_t, struct thread *);
94 int vm_mmap_to_errno(int rv);
95 int vm_mmap_cdev(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *,
96 int *, struct cdev *, struct cdevsw *, vm_ooffset_t *, vm_object_t *);
97 int vm_mmap_vnode(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *, int *,
98 struct vnode *, vm_ooffset_t *, vm_object_t *, boolean_t *);
99 void vm_set_page_size(void);
100 void vm_sync_icache(vm_map_t, vm_offset_t, vm_size_t);
101 typedef int (*pmap_pinit_t)(struct pmap *pmap);
102 struct vmspace *vmspace_alloc(vm_offset_t, vm_offset_t, pmap_pinit_t);
103 struct vmspace *vmspace_fork(struct vmspace *, vm_ooffset_t *);
104 int vmspace_exec(struct proc *, vm_offset_t, vm_offset_t);
105 int vmspace_unshare(struct proc *);
106 void vmspace_exit(struct thread *);
107 struct vmspace *vmspace_acquire_ref(struct proc *);
108 void vmspace_free(struct vmspace *);
109 void vmspace_exitfree(struct proc *);
110 void vmspace_switch_aio(struct vmspace *);
111 void vnode_pager_setsize(struct vnode *, vm_ooffset_t);
112 int vslock(void *, size_t);
113 void vsunlock(void *, size_t);
114 struct sf_buf *vm_imgact_map_page(vm_object_t object, vm_ooffset_t offset);
115 void vm_imgact_unmap_page(struct sf_buf *sf);
116 void vm_thread_dispose(struct thread *td);
117 int vm_thread_new(struct thread *td, int pages);
119 #endif /* !_VM_EXTERN_H_ */