zs_any.c revision 1.5
1 /* $NetBSD: zs_any.c,v 1.5 2001/11/26 18:06:36 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 #include <dev/sun/kbd_reg.h> 76 77 /**************************************************************** 78 * Autoconfig 79 ****************************************************************/ 80 81 /* Definition of the driver for autoconfig. */ 82 static int zs_any_match __P((struct device *, struct cfdata *, void *)); 83 static void zs_any_attach __P((struct device *, struct device *, void *)); 84 85 struct cfattach zs_obio_ca = { 86 sizeof(struct zsc_softc), zs_any_match, zs_any_attach 87 }; 88 89 struct cfattach zs_obmem_ca = { 90 sizeof(struct zsc_softc), zs_any_match, zs_any_attach 91 }; 92 93 struct cfattach zs_mbmem_ca = { 94 sizeof(struct zsc_softc), zs_any_match, zs_any_attach 95 }; 96 97 /* 98 * Is the zs chip present? 99 */ 100 static int 101 zs_any_match(parent, cf, aux) 102 struct device *parent; 103 struct cfdata *cf; 104 void *aux; 105 { 106 struct mainbus_attach_args *ma = aux; 107 bus_space_handle_t bh; 108 int matched; 109 110 /* Make sure there is something there... */ 111 if (bus_space_map(ma->ma_bustag, ma->ma_paddr, sizeof(struct zsdevice), 112 0, &bh)) 113 return (0); 114 matched = (bus_space_peek_1(ma->ma_bustag, bh, 0, NULL) == 0); 115 bus_space_unmap(ma->ma_bustag, bh, sizeof(struct zsdevice)); 116 if (!matched) 117 return (0); 118 119 /* Default interrupt priority (always splbio==2) */ 120 if (ma->ma_pri == -1) 121 ma->ma_pri = ZSHARD_PRI; 122 123 return (1); 124 } 125 126 /* 127 * Attach a found zs. 128 */ 129 static void 130 zs_any_attach(parent, self, aux) 131 struct device *parent; 132 struct device *self; 133 void *aux; 134 { 135 struct zsc_softc *zsc = (void *) self; 136 struct mainbus_attach_args *ma = aux; 137 bus_space_handle_t bh; 138 139 zsc->zsc_bustag = ma->ma_bustag; 140 zsc->zsc_dmatag = ma->ma_dmatag; 141 zsc->zsc_promunit = self->dv_unit; 142 zsc->zsc_node = 0; 143 144 /* Map in the device. */ 145 if (bus_space_map(ma->ma_bustag, ma->ma_paddr, sizeof(struct zsdevice), 146 BUS_SPACE_MAP_LINEAR, &bh)) 147 panic("zs_any_attach: can't map"); 148 149 /* This is where we break the bus_space(9) abstraction: */ 150 zs_attach(zsc, (void *)bh, ma->ma_pri); 151 } 152 153 int 154 zs_console_flags(promunit, node, channel) 155 int promunit; 156 int node; 157 int channel; 158 { 159 int cookie, flags = 0; 160 161 /* 162 * Use `promunit' and `channel' to derive the PROM 163 * stdio handles that correspond to this device. 164 */ 165 if (promunit == 0) 166 cookie = PROMDEV_TTYA + channel; 167 else if (promunit == 1 && channel == 0) 168 cookie = PROMDEV_KBD; 169 else 170 cookie = -1; 171 172 /* 173 * We have the console keyboard only if it's a Sun-2 174 * keyboard or better. (i.e., not a Sun-1 parallel kbd). 175 */ 176 if (cookie == prom_stdin() && 177 (cookie != PROMDEV_KBD || prom_kbdid() >= KB_SUN2)) 178 flags |= ZS_HWFLAG_CONSOLE_INPUT; 179 180 /* 181 * Prevent the keyboard from matching the output device 182 * (note that PROMDEV_KBD == PROMDEV_SCREEN == 0!). 183 */ 184 if (cookie != PROMDEV_KBD && cookie == prom_stdout()) 185 flags |= ZS_HWFLAG_CONSOLE_OUTPUT; 186 187 return (flags); 188 } 189 190 #ifdef KGDB 191 /* 192 * Find a zs mapped by the PROM. Currently this only works to find 193 * zs0 on obio. 194 */ 195 void * 196 zs_find_prom(unit) 197 int unit; 198 { 199 bus_addr_t zs0_phys; 200 bus_space_handle_t bh; 201 extern int sun68k_find_prom_map __P((bus_addr_t, bus_type_t, 202 int, bus_space_handle_t *)); 203 204 if (unit != 0) 205 return (NULL); 206 207 /* 208 * The physical address of zs0 is model-dependent. 209 */ 210 zs0_phys = (cpu_machine_id == SUN2_MACH_120 ? 211 0x002000 : 0x7f2000); 212 213 if (sun68k_find_prom_map(zs0_phys, PMAP_OBIO, sizeof(struct zsdevice), &bh)) 214 return (NULL); 215 216 return ((void*) bh); 217 } 218 #endif /* KGDB */ 219
Indexes created Wed Sep 24 02:09:48 GMT 2025