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sio.c revision 1.5 
      1 /* $NetBSD: sio.c,v 1.5 2008/04/28 20:23:26 martin 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  *
     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 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     33 
     34 __KERNEL_RCSID(0, "$NetBSD: sio.c,v 1.5 2008/04/28 20:23:26 martin Exp $");
     35 
     36 #include <sys/param.h>
     37 #include <sys/systm.h>
     38 #include <sys/device.h>
     39 
     40 #include <machine/cpu.h>
     41 #include <machine/autoconf.h>
     42 
     43 #include <luna68k/luna68k/isr.h>
     44 #include <luna68k/dev/siovar.h>
     45 
     46 static int  sio_match __P((struct device *, struct cfdata *, void *));
     47 static void sio_attach __P((struct device *, struct device *, void *));
     48 static int  sio_print __P((void *, const char *));
     49 
     50 CFATTACH_DECL(sio, sizeof(struct sio_softc),
     51     sio_match, sio_attach, NULL, NULL);
     52 extern struct cfdriver sio_cd;
     53 
     54 static void nullintr __P((int));
     55 static int xsiointr __P((void *));
     56 
     57 static int
     58 sio_match(parent, cf, aux)
     59 	struct device *parent;
     60 	struct cfdata *cf;
     61 	void *aux;
     62 {
     63 	struct mainbus_attach_args *ma = aux;
     64 
     65 	if (strcmp(ma->ma_name, sio_cd.cd_name))
     66 		return 0;
     67 	if (badaddr((void *)ma->ma_addr, 4))
     68 		return 0;
     69 	return 1;
     70 }
     71 
     72 static void
     73 sio_attach(parent, self, aux)
     74 	struct device *parent, *self;
     75 	void *aux;
     76 {
     77 	struct sio_softc *sc = (void *)self;
     78 	struct mainbus_attach_args *ma = aux;
     79 	struct sio_attach_args sio_args;
     80 	int channel;
     81 	extern int sysconsole; /* console: 0 for ttya, 1 for desktop */
     82 
     83 	printf(": 7201a\n");
     84 
     85 	sc->scp_ctl = (void *)ma->ma_addr;
     86 	sc->scp_intr[0] = sc->scp_intr[1] = nullintr;
     87 	for (channel = 0; channel < 2; channel++) {
     88 		sio_args.channel = channel;
     89 		sio_args.hwflags = (channel == sysconsole);
     90 		config_found(self, (void *)&sio_args, sio_print);
     91 	}
     92 
     93 	isrlink_autovec(xsiointr, sc, ma->ma_ilvl, ISRPRI_TTYNOBUF);
     94 }
     95 
     96 static int
     97 sio_print(aux, name)
     98 	void *aux;
     99 	const char *name;
    100 {
    101 	struct sio_attach_args *args = aux;
    102 
    103 	if (name != NULL)
    104 		aprint_normal("%s: ", name);
    105 
    106 	if (args->channel != -1)
    107 		aprint_normal(" channel %d", args->channel);
    108 
    109 	return UNCONF;
    110 }
    111 
    112 static int
    113 xsiointr(arg)
    114 	void *arg;
    115 {
    116 	struct sio_softc *sc = arg;
    117 
    118 	(*sc->scp_intr[0])(0); 	/* 0: ttya system serial port */
    119 	(*sc->scp_intr[1])(1);	/* 1: keyboard and mouse */
    120 	return 1;
    121 }
    122 
    123 static void nullintr(v) int v; { }
    124