1 /*- 2 * Copyright (c) 2015 Marcel Moolenaar 3 * 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 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <x86/bus.h> 33 34 #include <vm/vm.h> 35 #include <vm/pmap.h> 36 37 /* 38 * Implementation of bus_space_map(), which effectively is a thin 39 * wrapper around pmap_mapdev() for memory mapped I/O space. It's 40 * implemented here and not in <x86/bus.h> to avoid pollution. 41 */ 42 int 43 bus_space_map(bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 44 int flags __unused, bus_space_handle_t *bshp) 45 { 46 47 *bshp = (tag == X86_BUS_SPACE_MEM) 48 ? (uintptr_t)pmap_mapdev(addr, size) 49 : addr; 50 return (0); 51 } 52 53 void 54 bus_space_unmap(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t size) 55 { 56 57 if (tag == X86_BUS_SPACE_MEM) 58 pmap_unmapdev(bsh, size); 59 } 60