zs_any.c revision 1.3
1 /* $NetBSD: zs_any.c,v 1.3 2001/06/14 15:20:46 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 "opt_kgdb.h" 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/conf.h> 52 #include <sys/device.h> 53 #include <sys/file.h> 54 #include <sys/ioctl.h> 55 #include <sys/kernel.h> 56 #include <sys/proc.h> 57 #include <sys/tty.h> 58 #include <sys/time.h> 59 #include <sys/syslog.h> 60 61 #include <machine/autoconf.h> 62 #include <machine/bus.h> 63 #include <machine/z8530var.h> 64 65 #ifdef KGDB 66 #include <uvm/uvm_extern.h> 67 68 #include <machine/idprom.h> 69 #include <machine/pmap.h> 70 #include <dev/sun/cons.h> 71 #endif 72 73 #include <sun2/sun2/machdep.h> 74 #include <dev/ic/z8530reg.h> 75 76 /**************************************************************** 77 * Autoconfig 78 ****************************************************************/ 79 80 /* Definition of the driver for autoconfig. */ 81 static int zs_any_match __P((struct device *, struct cfdata *, void *)); 82 static void zs_any_attach __P((struct device *, struct device *, void *)); 83 84 struct cfattach zs_obio_ca = { 85 sizeof(struct zsc_softc), zs_any_match, zs_any_attach 86 }; 87 88 struct cfattach zs_obmem_ca = { 89 sizeof(struct zsc_softc), zs_any_match, zs_any_attach 90 }; 91 92 struct cfattach zs_mbmem_ca = { 93 sizeof(struct zsc_softc), zs_any_match, zs_any_attach 94 }; 95 96 /* 97 * Is the zs chip present? 98 */ 99 static int 100 zs_any_match(parent, cf, aux) 101 struct device *parent; 102 struct cfdata *cf; 103 void *aux; 104 { 105 struct confargs *ca = aux; 106 bus_space_handle_t bh; 107 int matched; 108 109 /* Make sure there is something there... */ 110 if (bus_space_map(ca->ca_bustag, ca->ca_paddr, sizeof(struct zsdevice), 111 0, &bh)) 112 return (0); 113 matched = (bus_space_peek_1(ca->ca_bustag, bh, 0, NULL) == 0); 114 bus_space_unmap(ca->ca_bustag, bh, sizeof(struct zsdevice)); 115 if (!matched) 116 return (0); 117 118 /* Default interrupt priority (always splbio==2) */ 119 if (ca->ca_intpri == -1) 120 ca->ca_intpri = ZSHARD_PRI; 121 122 return (1); 123 } 124 125 /* 126 * Attach a found zs. 127 */ 128 static void 129 zs_any_attach(parent, self, aux) 130 struct device *parent; 131 struct device *self; 132 void *aux; 133 { 134 struct zsc_softc *zsc = (void *) self; 135 struct confargs *ca = aux; 136 bus_space_handle_t bh; 137 138 zsc->zsc_bustag = ca->ca_bustag; 139 zsc->zsc_dmatag = ca->ca_dmatag; 140 zsc->zsc_promunit = self->dv_unit; 141 zsc->zsc_node = 0; 142 143 /* Map in the device. */ 144 if (bus_space_map(ca->ca_bustag, ca->ca_paddr, sizeof(struct zsdevice), 145 BUS_SPACE_MAP_LINEAR, &bh)) 146 panic("zs_any_attach: can't map"); 147 148 /* This is where we break the bus_space(9) abstraction: */ 149 zs_attach(zsc, (void *)bh, ca->ca_intpri); 150 } 151 152 #ifdef KGDB 153 /* 154 * Find a zs mapped by the PROM. Currently this only works to find 155 * zs0 on obio. 156 */ 157 void * 158 zs_find_prom(unit) 159 int unit; 160 { 161 bus_addr_t zs0_phys; 162 bus_space_handle_t bh; 163 extern int sun68k_find_prom_map __P((bus_addr_t, bus_type_t, 164 int, bus_space_handle_t *)); 165 166 if (unit != 0) 167 return (NULL); 168 169 /* 170 * The physical address of zs0 is model-dependent. 171 */ 172 zs0_phys = (cpu_machine_id == SUN2_MACH_120 ? 173 0x002000 : 0x7f2000); 174 175 if (sun68k_find_prom_map(zs0_phys, PMAP_OBIO, sizeof(struct zsdevice), &bh)) 176 return (NULL); 177 178 return ((void*) bh); 179 } 180 #endif /* KGDB */ 181
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