1 /*- 2 * Copyright (c) 2004 Mark R V Murray 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 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 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 AUTHORS ``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 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/conf.h> 33 #include <sys/fcntl.h> 34 #include <sys/kernel.h> 35 #include <sys/lock.h> 36 #include <sys/malloc.h> 37 #include <sys/module.h> 38 #include <sys/mutex.h> 39 #include <sys/proc.h> 40 #include <sys/signalvar.h> 41 #include <sys/systm.h> 42 #include <sys/uio.h> 43 44 #include <machine/specialreg.h> 45 46 #include <vm/vm.h> 47 #include <vm/pmap.h> 48 49 #include <machine/iodev.h> 50 51 static struct cdev *iodev; 52 53 static struct cdevsw io_cdevsw = { 54 .d_version = D_VERSION, 55 .d_open = ioopen, 56 .d_close = ioclose, 57 .d_name = "io", 58 }; 59 60 /* ARGSUSED */ 61 static int 62 io_modevent(module_t mod __unused, int type, void *data __unused) 63 { 64 switch(type) { 65 case MOD_LOAD: 66 if (bootverbose) 67 printf("io: <I/O>\n"); 68 iodev = make_dev(&io_cdevsw, 0, 69 UID_ROOT, GID_WHEEL, 0600, "io"); 70 break; 71 72 case MOD_UNLOAD: 73 destroy_dev(iodev); 74 break; 75 76 case MOD_SHUTDOWN: 77 break; 78 79 default: 80 return(EOPNOTSUPP); 81 break; 82 83 } 84 85 return (0); 86 } 87 88 DEV_MODULE(io, io_modevent, NULL); 89 MODULE_VERSION(io, 1); 90