1 /* $NetBSD: com_multi.c,v 1.1 1997/04/04 20:56:37 mycroft Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994, 1995, 1996 5 * Charles M. Hannum. All rights reserved. 6 * Copyright (c) 1991 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)com.c 7.5 (Berkeley) 5/16/91 38 */ 39 40 /* 41 * COM driver, uses National Semiconductor NS16450/NS16550AF UART 42 */ 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/ioctl.h> 46 #include <sys/select.h> 47 #include <sys/tty.h> 48 #include <sys/proc.h> 49 #include <sys/user.h> 50 #include <sys/conf.h> 51 #include <sys/file.h> 52 #include <sys/uio.h> 53 #include <sys/kernel.h> 54 #include <sys/syslog.h> 55 #include <sys/types.h> 56 #include <sys/device.h> 57 58 #include <machine/intr.h> 59 #include <machine/bus.h> 60 61 #include <dev/isa/isavar.h> 62 #include <dev/isa/comreg.h> 63 #include <dev/isa/comvar.h> 64 #include <dev/isa/com_multi.h> 65 66 int com_multi_probe __P((struct device *, void *, void *)); 67 void com_multi_attach __P((struct device *, struct device *, void *)); 68 69 struct cfattach com_multi_ca = { 70 sizeof(struct com_softc), com_multi_probe, com_multi_attach 71 }; 72 73 int 74 com_multi_probe(parent, match, aux) 75 struct device *parent; 76 void *match, *aux; 77 { 78 int iobase; 79 struct cfdata *cf = match; 80 struct commulti_attach_args *ca = aux; 81 82 if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != ca->ca_slave) 83 return (0); 84 85 iobase = ca->ca_iobase; 86 87 /* if it's in use as console, it's there. */ 88 if (iobase == comconsaddr && !comconsattached) 89 return 1; 90 91 return comprobe1(ca->ca_iot, ca->ca_ioh, iobase); 92 } 93 94 void 95 com_multi_attach(parent, self, aux) 96 struct device *parent, *self; 97 void *aux; 98 { 99 struct com_softc *sc = (void *)self; 100 struct commulti_attach_args *ca = aux; 101 102 /* 103 * We're living on a commulti. 104 */ 105 sc->sc_iot = ca->ca_iot; 106 sc->sc_ioh = ca->ca_ioh; 107 sc->sc_iobase = ca->ca_iobase; 108 109 if (ca->ca_noien) 110 sc->sc_hwflags |= COM_HW_NOIEN; 111 112 com_attach_subr(sc); 113 } 114