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sio.c revision 1.14.8.1 
      1 /* $NetBSD: sio.c,v 1.14.8.1 2021/08/04 02:37:20 thorpej 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 1.14.8.1 2021/08/04 02:37:20 thorpej 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 #include "ioconf.h"
     47 
     48 static int  sio_match(device_t, cfdata_t, void *);
     49 static void sio_attach(device_t, device_t, void *);
     50 static int  sio_print(void *, const char *);
     51 
     52 CFATTACH_DECL_NEW(sio, sizeof(struct sio_softc),
     53     sio_match, sio_attach, NULL, NULL);
     54 
     55 static void nullintr(void *);
     56 static int xsiointr(void *);
     57 
     58 static int
     59 sio_match(device_t parent, cfdata_t cf, void *aux)
     60 {
     61 	struct mainbus_attach_args *ma = aux;
     62 
     63 	if (strcmp(ma->ma_name, sio_cd.cd_name))
     64 		return 0;
     65 	if (badaddr((void *)ma->ma_addr, 4))
     66 		return 0;
     67 	return 1;
     68 }
     69 
     70 static void
     71 sio_attach(device_t parent, device_t self, void *aux)
     72 {
     73 	struct sio_softc *sc = device_private(self);
     74 	struct mainbus_attach_args *ma = aux;
     75 	struct sio_attach_args sio_args;
     76 	int channel;
     77 	extern int sysconsole; /* console: 0 for ttya, 1 for desktop */
     78 
     79 	aprint_normal(": uPD7201A\n");
     80 
     81 	sc->sc_dev = self;
     82 	sc->sc_ctl = (void *)ma->ma_addr;
     83 	for (channel = 0; channel < 2; channel++) {
     84 		sc->sc_intrhand[channel].ih_func = nullintr;
     85 		sio_args.channel = channel;
     86 		sio_args.hwflags = (channel == sysconsole);
     87 		config_found(self, (void *)&sio_args, sio_print, CFARGS_NONE);
     88 	}
     89 
     90 	isrlink_autovec(xsiointr, sc, ma->ma_ilvl, ISRPRI_TTYNOBUF);
     91 }
     92 
     93 static int
     94 sio_print(void *aux, const char *name)
     95 {
     96 	struct sio_attach_args *args = aux;
     97 
     98 	if (name != NULL)
     99 		aprint_normal("%s: ", name);
    100 
    101 	if (args->channel != -1)
    102 		aprint_normal(" channel %d", args->channel);
    103 
    104 	return UNCONF;
    105 }
    106 
    107 static int
    108 xsiointr(void *arg)
    109 {
    110 	struct sio_softc *sc = arg;
    111 
    112 	/* channel 0: ttya system serial port */
    113 	(*sc->sc_intrhand[0].ih_func)(sc->sc_intrhand[0].ih_arg);
    114 
    115 	/* channel 1: keyboard and mouse */
    116 	(*sc->sc_intrhand[1].ih_func)(sc->sc_intrhand[1].ih_arg);
    117 
    118 	return 1;
    119 }
    120 
    121 static void
    122 nullintr(void *arg)
    123 {
    124 }
    125