sys/dev/isa/com_multi.c

   1 /*      $NetBSD: com_multi.c,v 1.28 2009/05/12 08:44:19 cegger Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Charles M. Hannum.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*-
  33  * Copyright (c) 1991 The Regents of the University of California.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  *
  60  *      @(#)com.c       7.5 (Berkeley) 5/16/91
  61  */
  62
  63 /*
  64  * COM driver, uses National Semiconductor NS16450/NS16550AF UART
  65  */
  66
  67 #include <sys/cdefs.h>
  68 __KERNEL_RCSID(0, "$NetBSD: com_multi.c,v 1.28 2009/05/12 08:44:19 cegger Exp $");
  69
  70 #include <sys/param.h>
  71 #include <sys/systm.h>
  72 #include <sys/ioctl.h>
  73 #include <sys/select.h>
  74 #include <sys/tty.h>
  75 #include <sys/proc.h>
  76 #include <sys/conf.h>
  77 #include <sys/file.h>
  78 #include <sys/uio.h>
  79 #include <sys/kernel.h>
  80 #include <sys/syslog.h>
  81 #include <sys/device.h>
  82
  83 #include <sys/intr.h>
  84 #include <sys/bus.h>
  85
  86 #include <dev/ic/comreg.h>
  87 #include <dev/ic/comvar.h>
  88
  89 #include <dev/isa/isavar.h>
  90 #include <dev/isa/com_multi.h>
  91
  92 #include "locators.h"
  93
  94 int com_multi_probe(device_t, cfdata_t , void *);
  95 void com_multi_attach(device_t, device_t, void *);
  96
  97 CFATTACH_DECL_NEW(com_multi, sizeof(struct com_softc),
  98     com_multi_probe, com_multi_attach, NULL, NULL);
  99
 100 int
 101 com_multi_probe(device_t parent, cfdata_t match, void *aux)
 102 {
 103         int iobase;
 104         cfdata_t cf = match;
 105         struct commulti_attach_args *ca = aux;
 106
 107         if (cf->cf_loc[COMMULTICF_SLAVE] != COMMULTICF_SLAVE_DEFAULT &&
 108             cf->cf_loc[COMMULTICF_SLAVE] != ca->ca_slave)
 109                 return (0);
 110
 111         iobase = ca->ca_iobase;
 112
 113         /* if it's in use as console, it's there. */
 114         if (com_is_console(ca->ca_iot, iobase, 0))
 115                 return 1;
 116
 117         return comprobe1(ca->ca_iot, ca->ca_ioh);
 118 }
 119
 120 void
 121 com_multi_attach(device_t parent, device_t self, void *aux)
 122 {
 123         struct com_softc *sc = device_private(self);
 124         struct commulti_attach_args *ca = aux;
 125
 126         sc->sc_dev = self;
 127
 128         /*
 129          * We're living on a commulti.
 130          */
 131         COM_INIT_REGS(sc->sc_regs, ca->ca_iot, ca->ca_ioh, ca->ca_iobase);
 132         sc->sc_frequency = 115200 * 16;
 133
 134         if (ca->ca_noien)
 135                 sc->sc_hwflags |= COM_HW_NOIEN;
 136
 137         com_attach_subr(sc);
 138 }