/*- * 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 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); 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_ */