sys/vm/vm_extern.h

   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_ */