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ioblix_zbus.c revision 1.18 
      1 /*	$NetBSD: ioblix_zbus.c,v 1.18 2011/07/19 15:55:27 dyoung 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  *
     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>
     33 __KERNEL_RCSID(0, "$NetBSD: ioblix_zbus.c,v 1.18 2011/07/19 15:55:27 dyoung Exp $");
     34 
     35 /* IOBlix Zorro driver */
     36 /* XXX to be done: we need to probe the com clock speed! */
     37 
     38 #include <sys/types.h>
     39 
     40 #include <sys/device.h>
     41 #include <sys/conf.h>
     42 #include <sys/systm.h>
     43 #include <sys/param.h>
     44 #include <sys/bus.h>
     45 
     46 #include <amiga/include/cpu.h>
     47 
     48 #include <amiga/amiga/device.h>
     49 #include <amiga/amiga/drcustom.h>
     50 
     51 #include <amiga/dev/supio.h>
     52 #include <amiga/dev/zbusvar.h>
     53 
     54 #include "opt_iobzclock.h"
     55 
     56 struct iobz_softc {
     57 	struct device sc_dev;
     58 	struct bus_space_tag sc_bst;
     59 };
     60 
     61 int iobzmatch(struct device *, struct cfdata *, void *);
     62 void iobzattach(struct device *, struct device *, void *);
     63 int iobzprint(void *auxp, const char *);
     64 void iobz_shutdown(void *);
     65 
     66 CFATTACH_DECL(iobl_zbus, sizeof(struct iobz_softc),
     67     iobzmatch, iobzattach, NULL, NULL);
     68 
     69 int
     70 iobzmatch(struct device *parent, struct cfdata *cfp, void *auxp)
     71 {
     72 
     73 	struct zbus_args *zap;
     74 
     75 	zap = auxp;
     76 
     77 	if (zap->manid != 4711)
     78 		return (0);
     79 
     80 	if (zap->prodid != 1)
     81 		return (0);
     82 
     83 	return (1);
     84 }
     85 
     86 struct iobz_devs {
     87 	const char *name;
     88 	unsigned off;
     89 	int arg;
     90 } iobzdevices[] = {
     91 	{ "com", 0x108, 24000000 },	/* XXX see below */
     92 	{ "com", 0x100, 24000000 },
     93 	{ "com", 0x118, 24000000 },
     94 	{ "com", 0x110, 24000000 },
     95 	{ "lpt", 0x200, 0 },
     96 	{ "lpt", 0x300, 0 },
     97 	{ 0, 0, 0}
     98 };
     99 
    100 #ifndef IOBZCLOCK
    101 #define IOBZCLOCK 22118400;
    102 #endif
    103 int iobzclock = IOBZCLOCK;		/* patchable! */
    104 
    105 void
    106 iobzattach(struct device *parent, struct device *self, void *auxp)
    107 {
    108 	struct iobz_softc *iobzsc;
    109 	struct iobz_devs  *iobzd;
    110 	struct zbus_args *zap;
    111 	struct supio_attach_args supa;
    112 	extern const struct amiga_bus_space_methods amiga_bus_stride_16;
    113 	volatile u_int8_t *p;
    114 
    115 
    116 	iobzsc = (struct iobz_softc *)self;
    117 	zap = auxp;
    118 
    119 	if (parent)
    120 		printf("\n");
    121 
    122 	iobzsc->sc_bst.base = (u_long)zap->va;
    123 	iobzsc->sc_bst.absm = &amiga_bus_stride_16;
    124 
    125 	supa.supio_iot = &iobzsc->sc_bst;
    126 	supa.supio_ipl = 6;
    127 
    128 	iobzd = iobzdevices;
    129 
    130 	while (iobzd->name) {
    131 		supa.supio_name = iobzd->name;
    132 		supa.supio_iobase = iobzd->off;
    133 		supa.supio_arg = iobzd->arg ? iobzclock : 0 /* XXX iobzd->arg */;
    134 		config_found(self, &supa, iobzprint); /* XXX */
    135 		++iobzd;
    136 	}
    137 
    138 	p = (volatile u_int8_t *)zap->va + 2;
    139 	(void)shutdownhook_establish(iobz_shutdown, __UNVOLATILE(p));
    140 	*p = ((*p) & 0x1F) | 0x80;
    141 }
    142 
    143 int
    144 iobzprint(void *auxp, const char *pnp)
    145 {
    146 	struct supio_attach_args *supa;
    147 	supa = auxp;
    148 
    149 	if (pnp == NULL)
    150 		return(QUIET);
    151 
    152 	aprint_normal("%s at %s port 0x%02x",
    153 	    supa->supio_name, pnp, supa->supio_iobase);
    154 
    155 	return(UNCONF);
    156 }
    157 
    158 /*
    159  * Disable board interrupts at shutdown time.
    160  */
    161 
    162 void
    163 iobz_shutdown(void *p) {
    164 	volatile int8_t *q;
    165 
    166 	q = p;
    167 
    168 	*q &= 0x1F;
    169 }
    170