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sio.c revision 1.4 
      1 /* $NetBSD: sio.c,v 1.4 2007/03/04 06:00:03 christos Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Tohru Nishimura.
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     40 
     41 __KERNEL_RCSID(0, "$NetBSD: sio.c,v 1.4 2007/03/04 06:00:03 christos Exp $");
     42 
     43 #include <sys/param.h>
     44 #include <sys/systm.h>
     45 #include <sys/device.h>
     46 
     47 #include <machine/cpu.h>
     48 #include <machine/autoconf.h>
     49 
     50 #include <luna68k/luna68k/isr.h>
     51 #include <luna68k/dev/siovar.h>
     52 
     53 static int  sio_match __P((struct device *, struct cfdata *, void *));
     54 static void sio_attach __P((struct device *, struct device *, void *));
     55 static int  sio_print __P((void *, const char *));
     56 
     57 CFATTACH_DECL(sio, sizeof(struct sio_softc),
     58     sio_match, sio_attach, NULL, NULL);
     59 extern struct cfdriver sio_cd;
     60 
     61 static void nullintr __P((int));
     62 static int xsiointr __P((void *));
     63 
     64 static int
     65 sio_match(parent, cf, aux)
     66 	struct device *parent;
     67 	struct cfdata *cf;
     68 	void *aux;
     69 {
     70 	struct mainbus_attach_args *ma = aux;
     71 
     72 	if (strcmp(ma->ma_name, sio_cd.cd_name))
     73 		return 0;
     74 	if (badaddr((void *)ma->ma_addr, 4))
     75 		return 0;
     76 	return 1;
     77 }
     78 
     79 static void
     80 sio_attach(parent, self, aux)
     81 	struct device *parent, *self;
     82 	void *aux;
     83 {
     84 	struct sio_softc *sc = (void *)self;
     85 	struct mainbus_attach_args *ma = aux;
     86 	struct sio_attach_args sio_args;
     87 	int channel;
     88 	extern int sysconsole; /* console: 0 for ttya, 1 for desktop */
     89 
     90 	printf(": 7201a\n");
     91 
     92 	sc->scp_ctl = (void *)ma->ma_addr;
     93 	sc->scp_intr[0] = sc->scp_intr[1] = nullintr;
     94 	for (channel = 0; channel < 2; channel++) {
     95 		sio_args.channel = channel;
     96 		sio_args.hwflags = (channel == sysconsole);
     97 		config_found(self, (void *)&sio_args, sio_print);
     98 	}
     99 
    100 	isrlink_autovec(xsiointr, sc, ma->ma_ilvl, ISRPRI_TTYNOBUF);
    101 }
    102 
    103 static int
    104 sio_print(aux, name)
    105 	void *aux;
    106 	const char *name;
    107 {
    108 	struct sio_attach_args *args = aux;
    109 
    110 	if (name != NULL)
    111 		aprint_normal("%s: ", name);
    112 
    113 	if (args->channel != -1)
    114 		aprint_normal(" channel %d", args->channel);
    115 
    116 	return UNCONF;
    117 }
    118 
    119 static int
    120 xsiointr(arg)
    121 	void *arg;
    122 {
    123 	struct sio_softc *sc = arg;
    124 
    125 	(*sc->scp_intr[0])(0); 	/* 0: ttya system serial port */
    126 	(*sc->scp_intr[1])(1);	/* 1: keyboard and mouse */
    127 	return 1;
    128 }
    129 
    130 static void nullintr(v) int v; { }
    131