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 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); 51 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); 55 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_attr_domain(int domain, vm_size_t size, int flags, 60 vm_paddr_t low, vm_paddr_t high, vm_memattr_t memattr); 61 vm_offset_t kmem_alloc_contig(struct vmem *, vm_size_t size, int flags, 62 vm_paddr_t low, vm_paddr_t high, u_long alignment, vm_paddr_t boundary, 63 vm_memattr_t memattr); 64 vm_offset_t kmem_alloc_contig_domain(int domain, vm_size_t size, int flags, 65 vm_paddr_t low, vm_paddr_t high, u_long alignment, vm_paddr_t boundary, 66 vm_memattr_t memattr); 67 vm_offset_t kmem_malloc(struct vmem *, vm_size_t size, int flags); 68 vm_offset_t kmem_malloc_domain(int domain, vm_size_t size, int flags); 69 void kmem_free(struct vmem *, vm_offset_t, vm_size_t); 70 71 /* This provides memory for previously allocated address space. */ 72 int kmem_back(vm_object_t, vm_offset_t, vm_size_t, int); 73 int kmem_back_domain(int, vm_object_t, vm_offset_t, vm_size_t, int); 74 void kmem_unback(vm_object_t, vm_offset_t, vm_size_t); 75 76 /* Bootstrapping. */ 77 vm_map_t kmem_suballoc(vm_map_t, vm_offset_t *, vm_offset_t *, vm_size_t, 78 boolean_t); 79 void kmem_init(vm_offset_t, vm_offset_t); 80 void kmem_init_zero_region(void); 81 void kmeminit(void); 82 83 int kernacc(void *, int, int); 84 int useracc(void *, int, int); 85 int vm_fault(vm_map_t, vm_offset_t, vm_prot_t, int); 86 void vm_fault_copy_entry(vm_map_t, vm_map_t, vm_map_entry_t, vm_map_entry_t, 87 vm_ooffset_t *); 88 int vm_fault_disable_pagefaults(void); 89 void vm_fault_enable_pagefaults(int save); 90 int vm_fault_hold(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type, 91 int fault_flags, vm_page_t *m_hold); 92 int vm_fault_quick_hold_pages(vm_map_t map, vm_offset_t addr, vm_size_t len, 93 vm_prot_t prot, vm_page_t *ma, int max_count); 94 int vm_forkproc(struct thread *, struct proc *, struct thread *, 95 struct vmspace *, int); 96 void vm_waitproc(struct proc *); 97 int vm_mmap(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t, vm_prot_t, int, 98 objtype_t, void *, vm_ooffset_t); 99 int vm_mmap_object(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t, 100 vm_prot_t, int, vm_object_t, vm_ooffset_t, boolean_t, struct thread *); 101 int vm_mmap_to_errno(int rv); 102 int vm_mmap_cdev(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *, 103 int *, struct cdev *, struct cdevsw *, vm_ooffset_t *, vm_object_t *); 104 int vm_mmap_vnode(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *, int *, 105 struct vnode *, vm_ooffset_t *, vm_object_t *, boolean_t *); 106 void vm_set_page_size(void); 107 void vm_sync_icache(vm_map_t, vm_offset_t, vm_size_t); 108 typedef int (*pmap_pinit_t)(struct pmap *pmap); 109 struct vmspace *vmspace_alloc(vm_offset_t, vm_offset_t, pmap_pinit_t); 110 struct vmspace *vmspace_fork(struct vmspace *, vm_ooffset_t *); 111 int vmspace_exec(struct proc *, vm_offset_t, vm_offset_t); 112 int vmspace_unshare(struct proc *); 113 void vmspace_exit(struct thread *); 114 struct vmspace *vmspace_acquire_ref(struct proc *); 115 void vmspace_free(struct vmspace *); 116 void vmspace_exitfree(struct proc *); 117 void vmspace_switch_aio(struct vmspace *); 118 void vnode_pager_setsize(struct vnode *, vm_ooffset_t); 119 int vslock(void *, size_t); 120 void vsunlock(void *, size_t); 121 struct sf_buf *vm_imgact_map_page(vm_object_t object, vm_ooffset_t offset); 122 void vm_imgact_unmap_page(struct sf_buf *sf); 123 void vm_thread_dispose(struct thread *td); 124 int vm_thread_new(struct thread *td, int pages); 125 u_int vm_active_count(void); 126 u_int vm_inactive_count(void); 127 u_int vm_laundry_count(void); 128 u_int vm_wait_count(void); 129 #endif /* _KERNEL */ 130 #endif /* !_VM_EXTERN_H_ */ 131