1 /* $NetBSD: ioblix_zbus.c,v 1.20 2021/04/24 23:36:24 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 * 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 1.20 2021/04/24 23:36:24 thorpej 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 bus_space_tag sc_bst; 58 }; 59 60 int iobzmatch(device_t, cfdata_t, void *); 61 void iobzattach(device_t, device_t, void *); 62 int iobzprint(void *, const char *); 63 void iobz_shutdown(void *); 64 65 CFATTACH_DECL_NEW(iobl_zbus, sizeof(struct iobz_softc), 66 iobzmatch, iobzattach, NULL, NULL); 67 68 int 69 iobzmatch(device_t parent, cfdata_t cf, void *aux) 70 { 71 72 struct zbus_args *zap; 73 74 zap = aux; 75 76 if (zap->manid != 4711) 77 return (0); 78 79 if (zap->prodid != 1) 80 return (0); 81 82 return (1); 83 } 84 85 struct iobz_devs { 86 const char *name; 87 unsigned off; 88 int arg; 89 } iobzdevices[] = { 90 { "com", 0x108, 24000000 }, /* XXX see below */ 91 { "com", 0x100, 24000000 }, 92 { "com", 0x118, 24000000 }, 93 { "com", 0x110, 24000000 }, 94 { "lpt", 0x200, 0 }, 95 { "lpt", 0x300, 0 }, 96 { 0, 0, 0} 97 }; 98 99 #ifndef IOBZCLOCK 100 #define IOBZCLOCK 22118400; 101 #endif 102 int iobzclock = IOBZCLOCK; /* patchable! */ 103 104 void 105 iobzattach(device_t parent, device_t self, void *aux) 106 { 107 struct iobz_softc *iobzsc; 108 struct iobz_devs *iobzd; 109 struct zbus_args *zap; 110 struct supio_attach_args supa; 111 extern const struct amiga_bus_space_methods amiga_bus_stride_16; 112 volatile u_int8_t *p; 113 114 115 iobzsc = device_private(self); 116 zap = aux; 117 118 if (parent) 119 printf("\n"); 120 121 iobzsc->sc_bst.base = (u_long)zap->va; 122 iobzsc->sc_bst.absm = &amiga_bus_stride_16; 123 124 supa.supio_iot = &iobzsc->sc_bst; 125 supa.supio_ipl = 6; 126 127 iobzd = iobzdevices; 128 129 while (iobzd->name) { 130 supa.supio_name = iobzd->name; 131 supa.supio_iobase = iobzd->off; 132 supa.supio_arg = iobzd->arg ? iobzclock : 0 /* XXX iobzd->arg */; 133 config_found(self, &supa, iobzprint, CFARG_EOL); /* XXX */ 134 ++iobzd; 135 } 136 137 p = (volatile u_int8_t *)zap->va + 2; 138 (void)shutdownhook_establish(iobz_shutdown, __UNVOLATILE(p)); 139 *p = ((*p) & 0x1F) | 0x80; 140 } 141 142 int 143 iobzprint(void *aux, const char *pnp) 144 { 145 struct supio_attach_args *supa; 146 supa = aux; 147 148 if (pnp == NULL) 149 return(QUIET); 150 151 aprint_normal("%s at %s port 0x%02x", 152 supa->supio_name, pnp, supa->supio_iobase); 153 154 return(UNCONF); 155 } 156 157 /* 158 * Disable board interrupts at shutdown time. 159 */ 160 161 void 162 iobz_shutdown(void *p) { 163 volatile int8_t *q; 164 165 q = p; 166 167 *q &= 0x1F; 168 } 169