/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ /* * Mach Operating System * Copyright (c) 1991,1990 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* */ #include <mach/vm_param.h> #include <vm/vm_kern.h> #include <vm/vm_map.h> #include <i386/pmap.h> #include <i386/io_map_entries.h> #include <san/kasan.h> extern vm_offset_t virtual_avail; /* * Allocate and map memory for devices that may need to be mapped before * Mach VM is running. */ vm_offset_t io_map(vm_map_offset_t phys_addr, vm_size_t size, unsigned int flags) { vm_offset_t start; if (kernel_map == VM_MAP_NULL) { /* * VM is not initialized. Grab memory. */ start = virtual_avail; virtual_avail += round_page(size); #if KASAN kasan_notify_address(start, size); #endif (void) pmap_map_bd(start, phys_addr, phys_addr + round_page(size), VM_PROT_READ | VM_PROT_WRITE, flags); } else { (void) kmem_alloc_pageable(kernel_map, &start, round_page(size), VM_KERN_MEMORY_IOKIT); (void) pmap_map(start, phys_addr, phys_addr + round_page(size), VM_PROT_READ | VM_PROT_WRITE, flags); } return start; } /* just wrap this since io_map handles it */ vm_offset_t io_map_spec(vm_map_offset_t phys_addr, vm_size_t size, unsigned int flags) { return io_map(phys_addr, size, flags); }