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