zs_any.c revision 1.1
1 /* $NetBSD: zs_any.c,v 1.1 2001/04/06 15:14:39 fredette Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Gordon W. Ross and Matthew Fredette. 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 /* 40 * Zilog Z8530 Dual UART driver (machine-dependent part) 41 * 42 * Runs two serial lines per chip using slave drivers. 43 * Plain tty/async lines use the zs_async slave. 44 * Sun keyboard/mouse uses the zs_kbd/zs_ms slaves. 45 */ 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/conf.h> 50 #include <sys/device.h> 51 #include <sys/file.h> 52 #include <sys/ioctl.h> 53 #include <sys/kernel.h> 54 #include <sys/proc.h> 55 #include <sys/tty.h> 56 #include <sys/time.h> 57 #include <sys/syslog.h> 58 59 #include <machine/autoconf.h> 60 #include <machine/bus.h> 61 #include <machine/z8530var.h> 62 63 #ifdef KGDB 64 #include <uvm/uvm_extern.h> 65 66 #include <machine/idprom.h> 67 #include <machine/pmap.h> 68 #include <dev/sun/cons.h> 69 #endif 70 71 #include <sun2/sun2/machdep.h> 72 #include <dev/ic/z8530reg.h> 73 74 /**************************************************************** 75 * Autoconfig 76 ****************************************************************/ 77 78 /* Definition of the driver for autoconfig. */ 79 static int zs_any_match __P((struct device *, struct cfdata *, void *)); 80 static void zs_any_attach __P((struct device *, struct device *, void *)); 81 82 struct cfattach zs_obio_ca = { 83 sizeof(struct zsc_softc), zs_any_match, zs_any_attach 84 }; 85 86 struct cfattach zs_obmem_ca = { 87 sizeof(struct zsc_softc), zs_any_match, zs_any_attach 88 }; 89 90 struct cfattach zs_mbmem_ca = { 91 sizeof(struct zsc_softc), zs_any_match, zs_any_attach 92 }; 93 94 /* 95 * Is the zs chip present? 96 */ 97 static int 98 zs_any_match(parent, cf, aux) 99 struct device *parent; 100 struct cfdata *cf; 101 void *aux; 102 { 103 struct confargs *ca = aux; 104 105 /* Make sure there is something there... */ 106 if (!bus_space_probe(ca->ca_bustag, 0, ca->ca_paddr, 107 1, /* probe size */ 108 0, /* offset */ 109 0, /* flags */ 110 NULL, NULL)) 111 return (0); 112 113 /* Default interrupt priority (always splbio==2) */ 114 if (ca->ca_intpri == -1) 115 ca->ca_intpri = ZSHARD_PRI; 116 117 return (1); 118 } 119 120 /* 121 * Attach a found zs. 122 */ 123 static void 124 zs_any_attach(parent, self, aux) 125 struct device *parent; 126 struct device *self; 127 void *aux; 128 { 129 struct zsc_softc *zsc = (void *) self; 130 struct confargs *ca = aux; 131 bus_space_handle_t bh; 132 133 zsc->zsc_bustag = ca->ca_bustag; 134 zsc->zsc_dmatag = ca->ca_dmatag; 135 zsc->zsc_promunit = self->dv_unit; 136 zsc->zsc_node = 0; 137 138 /* Map in the device. */ 139 if (bus_space_map(ca->ca_bustag, ca->ca_paddr, sizeof(struct zsdevice), 140 BUS_SPACE_MAP_LINEAR, &bh)) 141 panic("zs_any_attach: can't map"); 142 143 /* This is where we break the bus_space(9) abstraction: */ 144 zs_attach(zsc, (void *)bh, ca->ca_intpri); 145 } 146 147 #ifdef KGDB 148 /* 149 * Find a zs mapped by the PROM. Currently this only works to find 150 * zs0 on obio. 151 */ 152 void * 153 zs_find_prom(unit) 154 int unit; 155 { 156 bus_addr_t zs0_phys; 157 bus_space_handle_t bh; 158 159 if (unit != 0) 160 return (NULL); 161 162 /* 163 * The physical address of zs0 is model-dependent. 164 */ 165 zs0_phys = (cpu_machine_id == SUN2_MACH_120 ? 166 0x002000 : 0x7f2000); 167 168 if (sun2_find_prom_map(zs0_phys, PMAP_OBIO, sizeof(struct zsdevice), &bh)) 169 return (NULL); 170 171 return ((void*) bh); 172 } 173 #endif /* KGDB */ 174
Indexes created Thu Sep 25 16:09:42 GMT 2025