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ioblix_zbus.c revision 1.9 
      1 /*	$NetBSD: ioblix_zbus.c,v 1.9 2002/10/02 04:55:51 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 Ignatios Souvatzis.
      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>
     40 __KERNEL_RCSID(0, "$NetBSD: ioblix_zbus.c,v 1.9 2002/10/02 04:55:51 thorpej Exp $");
     41 
     42 /* IOBlix Zorro driver */
     43 /* XXX to be done: we need to probe the com clock speed! */
     44 
     45 #include <sys/types.h>
     46 
     47 #include <sys/conf.h>
     48 #include <sys/device.h>
     49 #include <sys/systm.h>
     50 #include <sys/param.h>
     51 
     52 #include <machine/bus.h>
     53 
     54 #include <amiga/include/cpu.h>
     55 
     56 #include <amiga/amiga/device.h>
     57 #include <amiga/amiga/drcustom.h>
     58 
     59 #include <amiga/dev/supio.h>
     60 #include <amiga/dev/zbusvar.h>
     61 
     62 
     63 struct iobz_softc {
     64 	struct device sc_dev;
     65 	struct bus_space_tag sc_bst;
     66 };
     67 
     68 int iobzmatch(struct device *, struct cfdata *, void *);
     69 void iobzattach(struct device *, struct device *, void *);
     70 int iobzprint(void *auxp, const char *);
     71 void iobz_shutdown(void *);
     72 
     73 CFATTACH_DECL(iobl_zbus, sizeof(struct iobz_softc),
     74     iobzmatch, iobzattach, NULL, NULL);
     75 
     76 int
     77 iobzmatch(struct device *parent, struct cfdata *cfp, void *auxp)
     78 {
     79 
     80 	struct zbus_args *zap;
     81 
     82 	zap = auxp;
     83 
     84 	if (zap->manid != 4711)
     85 		return (0);
     86 
     87 	if (zap->prodid != 1)
     88 		return (0);
     89 
     90 	return (1);
     91 }
     92 
     93 struct iobz_devs {
     94 	char *name;
     95 	unsigned off;
     96 	int arg;
     97 } iobzdevices[] = {
     98 	{ "com", 0x100, 24000000 },	/* XXX see below */
     99 	{ "com", 0x108, 24000000 },
    100 	{ "com", 0x110, 24000000 },
    101 	{ "com", 0x118, 24000000 },
    102 	{ "lpt", 0x200, 0 },
    103 	{ "lpt", 0x300, 0 },
    104 	{ 0, 0, 0}
    105 };
    106 
    107 #ifndef IOBZCLOCK
    108 #define IOBZCLOCK 22118400;
    109 #endif
    110 int iobzclock = IOBZCLOCK;		/* patchable! */
    111 
    112 void
    113 iobzattach(struct device *parent, struct device *self, void *auxp)
    114 {
    115 	struct iobz_softc *iobzsc;
    116 	struct iobz_devs  *iobzd;
    117 	struct zbus_args *zap;
    118 	struct supio_attach_args supa;
    119 	extern const struct amiga_bus_space_methods amiga_bus_stride_16;
    120 	volatile u_int8_t *p;
    121 
    122 
    123 	iobzsc = (struct iobz_softc *)self;
    124 	zap = auxp;
    125 
    126 	if (parent)
    127 		printf("\n");
    128 
    129 	iobzsc->sc_bst.base = (u_long)zap->va;
    130 	iobzsc->sc_bst.absm = &amiga_bus_stride_16;
    131 
    132 	supa.supio_iot = &iobzsc->sc_bst;
    133 	supa.supio_ipl = 6;
    134 
    135 	iobzd = iobzdevices;
    136 
    137 	while (iobzd->name) {
    138 		supa.supio_name = iobzd->name;
    139 		supa.supio_iobase = iobzd->off;
    140 		supa.supio_arg = iobzclock /* XXX iobzd->arg */;
    141 		config_found(self, &supa, iobzprint); /* XXX */
    142 		++iobzd;
    143 	}
    144 
    145 	p = (volatile u_int8_t *)zap->va + 2;
    146 	(void)shutdownhook_establish(iobz_shutdown, (void *)p);
    147 	*p = ((*p) & 0x1F) | 0x80;
    148 }
    149 
    150 int
    151 iobzprint(void *auxp, const char *pnp)
    152 {
    153 	struct supio_attach_args *supa;
    154 	supa = auxp;
    155 
    156 	if (pnp == NULL)
    157 		return(QUIET);
    158 
    159 	printf("%s at %s port 0x%02x",
    160 	    supa->supio_name, pnp, supa->supio_iobase);
    161 
    162 	return(UNCONF);
    163 }
    164 
    165 /*
    166  * Disable board interupts at shutdown time.
    167  */
    168 
    169 void
    170 iobz_shutdown(void *p) {
    171 	volatile int8_t *q;
    172 
    173 	q = p;
    174 
    175 	*q &= 0x1F;
    176 }
    177