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- /*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #ifndef _VM_EXTERN_H_
- #define _VM_EXTERN_H_
- struct pmap;
- struct proc;
- struct vmspace;
- struct vnode;
- struct vmem;
- #ifdef _KERNEL
- #include <sys/kassert.h>
- struct cdev;
- struct cdevsw;
- struct domainset;
- /* These operate on kernel virtual addresses only. */
- vm_offset_t kva_alloc(vm_size_t);
- vm_offset_t kva_alloc_aligned(vm_size_t, vm_size_t);
- void kva_free(vm_offset_t, vm_size_t);
- /* These operate on pageable virtual addresses. */
- vm_offset_t kmap_alloc_wait(vm_map_t, vm_size_t);
- void kmap_free_wakeup(vm_map_t, vm_offset_t, vm_size_t);
- /* These operate on virtual addresses backed by memory. */
- void *kmem_alloc_attr(vm_size_t size, int flags,
- vm_paddr_t low, vm_paddr_t high, vm_memattr_t memattr);
- void *kmem_alloc_attr_domainset(struct domainset *ds, vm_size_t size,
- int flags, vm_paddr_t low, vm_paddr_t high, vm_memattr_t memattr);
- void *kmem_alloc_contig(vm_size_t size, int flags,
- vm_paddr_t low, vm_paddr_t high, u_long alignment, vm_paddr_t boundary,
- vm_memattr_t memattr);
- void *kmem_alloc_contig_domainset(struct domainset *ds, vm_size_t size,
- int flags, vm_paddr_t low, vm_paddr_t high, u_long alignment,
- vm_paddr_t boundary, vm_memattr_t memattr);
- void *kmem_malloc(vm_size_t size, int flags);
- void *kmem_malloc_domainset(struct domainset *ds, vm_size_t size,
- int flags);
- void kmem_free(void *addr, vm_size_t size);
- /* This provides memory for previously allocated address space. */
- int kmem_back(vm_object_t, vm_offset_t, vm_size_t, int);
- int kmem_back_domain(int, vm_object_t, vm_offset_t, vm_size_t, int);
- void kmem_unback(vm_object_t, vm_offset_t, vm_size_t);
- /* Bootstrapping. */
- void kmem_bootstrap_free(vm_offset_t, vm_size_t);
- void kmem_subinit(vm_map_t, vm_map_t, vm_offset_t *, vm_offset_t *, vm_size_t,
- bool);
- void kmem_init(vm_offset_t, vm_offset_t);
- void kmem_init_zero_region(void);
- void kmeminit(void);
- bool kernacc(void *, int, int);
- bool useracc(void *, int, int);
- int vm_fault(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type,
- int fault_flags, vm_page_t *m_hold);
- void vm_fault_copy_entry(vm_map_t, vm_map_t, vm_map_entry_t, vm_map_entry_t,
- vm_ooffset_t *);
- int vm_fault_disable_pagefaults(void);
- void vm_fault_enable_pagefaults(int save);
- int vm_fault_quick_hold_pages(vm_map_t map, vm_offset_t addr, vm_size_t len,
- vm_prot_t prot, vm_page_t *ma, int max_count);
- int vm_fault_trap(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type,
- int fault_flags, int *signo, int *ucode);
- int vm_forkproc(struct thread *, struct proc *, struct thread *,
- struct vmspace *, int);
- void vm_waitproc(struct proc *);
- int vm_mmap(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t, vm_prot_t, int,
- objtype_t, void *, vm_ooffset_t);
- int vm_mmap_object(vm_map_t, vm_offset_t *, vm_size_t, vm_prot_t,
- vm_prot_t, int, vm_object_t, vm_ooffset_t, boolean_t, struct thread *);
- int vm_mmap_to_errno(int rv);
- int vm_mmap_cdev(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *,
- int *, struct cdev *, struct cdevsw *, vm_ooffset_t *, vm_object_t *);
- int vm_mmap_vnode(struct thread *, vm_size_t, vm_prot_t, vm_prot_t *, int *,
- struct vnode *, vm_ooffset_t *, vm_object_t *, boolean_t *);
- void vm_set_page_size(void);
- void vm_sync_icache(vm_map_t, vm_offset_t, vm_size_t);
- typedef int (*pmap_pinit_t)(struct pmap *pmap);
- struct vmspace *vmspace_alloc(vm_offset_t, vm_offset_t, pmap_pinit_t);
- struct vmspace *vmspace_fork(struct vmspace *, vm_ooffset_t *);
- int vmspace_exec(struct proc *, vm_offset_t, vm_offset_t);
- int vmspace_unshare(struct proc *);
- void vmspace_exit(struct thread *);
- struct vmspace *vmspace_acquire_ref(struct proc *);
- void vmspace_free(struct vmspace *);
- void vmspace_exitfree(struct proc *);
- void vmspace_switch_aio(struct vmspace *);
- void vnode_pager_setsize(struct vnode *, vm_ooffset_t);
- void vnode_pager_purge_range(struct vnode *, vm_ooffset_t, vm_ooffset_t);
- int vslock(void *, size_t);
- void vsunlock(void *, size_t);
- struct sf_buf *vm_imgact_map_page(vm_object_t object, vm_ooffset_t offset);
- void vm_imgact_unmap_page(struct sf_buf *sf);
- void vm_thread_dispose(struct thread *td);
- int vm_thread_new(struct thread *td, int pages);
- vm_pindex_t vm_kstack_pindex(vm_offset_t ks, int npages);
- vm_object_t vm_thread_kstack_size_to_obj(int npages);
- int vm_thread_stack_back(vm_offset_t kaddr, vm_page_t ma[], int npages,
- int req_class, int domain);
- u_int vm_active_count(void);
- u_int vm_inactive_count(void);
- u_int vm_laundry_count(void);
- u_int vm_wait_count(void);
- /*
- * Is pa a multiple of alignment, which is a power-of-two?
- */
- static inline bool
- vm_addr_align_ok(vm_paddr_t pa, u_long alignment)
- {
- KASSERT(powerof2(alignment), ("%s: alignment is not a power of 2: %#lx",
- __func__, alignment));
- return ((pa & (alignment - 1)) == 0);
- }
- /*
- * Do the first and last addresses of a range match in all bits except the ones
- * in -boundary (a power-of-two)? For boundary == 0, all addresses match.
- */
- static inline bool
- vm_addr_bound_ok(vm_paddr_t pa, vm_paddr_t size, vm_paddr_t boundary)
- {
- KASSERT(powerof2(boundary), ("%s: boundary is not a power of 2: %#jx",
- __func__, (uintmax_t)boundary));
- return (((pa ^ (pa + size - 1)) & -boundary) == 0);
- }
- static inline bool
- vm_addr_ok(vm_paddr_t pa, vm_paddr_t size, u_long alignment,
- vm_paddr_t boundary)
- {
- return (vm_addr_align_ok(pa, alignment) &&
- vm_addr_bound_ok(pa, size, boundary));
- }
- #endif /* _KERNEL */
- #endif /* !_VM_EXTERN_H_ */
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