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ioblix_zbus.c revision 1.6 
      1 /*	$NetBSD: ioblix_zbus.c,v 1.6 2002/01/28 09:56:59 aymeric 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 1.6 2002/01/28 09:56:59 aymeric 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 #include <machine/conf.h>
     54 
     55 #include <amiga/include/cpu.h>
     56 
     57 #include <amiga/amiga/device.h>
     58 #include <amiga/amiga/drcustom.h>
     59 
     60 #include <amiga/dev/supio.h>
     61 #include <amiga/dev/zbusvar.h>
     62 
     63 
     64 struct iobz_softc {
     65 	struct device sc_dev;
     66 	struct bus_space_tag sc_bst;
     67 };
     68 
     69 int iobzmatch(struct device *, struct cfdata *, void *);
     70 void iobzattach(struct device *, struct device *, void *);
     71 int iobzprint(void *auxp, const char *);
     72 void iobz_shutdown(void *);
     73 
     74 struct cfattach iobl_zbus_ca = {
     75 	sizeof(struct iobz_softc), iobzmatch, iobzattach
     76 };
     77 
     78 int
     79 iobzmatch(struct device *parent, struct cfdata *cfp, void *auxp)
     80 {
     81 
     82 	struct zbus_args *zap;
     83 
     84 	zap = auxp;
     85 
     86 	if (zap->manid != 4711)
     87 		return (0);
     88 
     89 	if (zap->prodid != 1)
     90 		return (0);
     91 
     92 	return (1);
     93 }
     94 
     95 struct iobz_devs {
     96 	char *name;
     97 	unsigned off;
     98 	int arg;
     99 } iobzdevices[] = {
    100 	{ "com", 0x100, 24000000 },	/* XXX see below */
    101 	{ "com", 0x108, 24000000 },
    102 	{ "com", 0x110, 24000000 },
    103 	{ "com", 0x118, 24000000 },
    104 	{ "lpt", 0x200, 0 },
    105 	{ "lpt", 0x300, 0 },
    106 	{ 0, 0, 0}
    107 };
    108 
    109 #ifndef IOBZCLOCK
    110 #define IOBZCLOCK 22118400;
    111 #endif
    112 int iobzclock = IOBZCLOCK;		/* patchable! */
    113 
    114 void
    115 iobzattach(struct device *parent, struct device *self, void *auxp)
    116 {
    117 	struct iobz_softc *iobzsc;
    118 	struct iobz_devs  *iobzd;
    119 	struct zbus_args *zap;
    120 	struct supio_attach_args supa;
    121 	extern const struct amiga_bus_space_methods amiga_bus_stride_16;
    122 	volatile u_int8_t *p;
    123 
    124 
    125 	iobzsc = (struct iobz_softc *)self;
    126 	zap = auxp;
    127 
    128 	if (parent)
    129 		printf("\n");
    130 
    131 	iobzsc->sc_bst.base = (u_long)zap->va;
    132 	iobzsc->sc_bst.absm = &amiga_bus_stride_16;
    133 
    134 	supa.supio_iot = &iobzsc->sc_bst;
    135 	supa.supio_ipl = 6;
    136 
    137 	iobzd = iobzdevices;
    138 
    139 	while (iobzd->name) {
    140 		supa.supio_name = iobzd->name;
    141 		supa.supio_iobase = iobzd->off;
    142 		supa.supio_arg = iobzclock /* XXX iobzd->arg */;
    143 		config_found(self, &supa, iobzprint); /* XXX */
    144 		++iobzd;
    145 	}
    146 
    147 	p = (volatile u_int8_t *)zap->va + 2;
    148 	(void)shutdownhook_establish(iobz_shutdown, (void *)p);
    149 	*p = ((*p) & 0x1F) | 0x80;
    150 }
    151 
    152 int
    153 iobzprint(void *auxp, const char *pnp)
    154 {
    155 	struct supio_attach_args *supa;
    156 	supa = auxp;
    157 
    158 	if (pnp == NULL)
    159 		return(QUIET);
    160 
    161 	printf("%s at %s port 0x%02x",
    162 	    supa->supio_name, pnp, supa->supio_iobase);
    163 
    164 	return(UNCONF);
    165 }
    166 
    167 /*
    168  * Disable board interupts at shutdown time.
    169  */
    170 
    171 void
    172 iobz_shutdown(void *p) {
    173 	volatile int8_t *q;
    174 
    175 	q = p;
    176 
    177 	*q &= 0x1F;
    178 }
    179