zs_any.c revision 1.14
1 /* $NetBSD: zs_any.c,v 1.14 2006/03/28 17:38:28 thorpej 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/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: zs_any.c,v 1.14 2006/03/28 17:38:28 thorpej Exp $"); 49 50 #include "opt_kgdb.h" 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/conf.h> 55 #include <sys/device.h> 56 #include <sys/file.h> 57 #include <sys/ioctl.h> 58 #include <sys/kernel.h> 59 #include <sys/proc.h> 60 #include <sys/tty.h> 61 #include <sys/time.h> 62 #include <sys/syslog.h> 63 64 #include <machine/autoconf.h> 65 #include <machine/bus.h> 66 #include <machine/z8530var.h> 67 68 #ifdef KGDB 69 #include <uvm/uvm_extern.h> 70 71 #include <machine/idprom.h> 72 #include <machine/pmap.h> 73 #include <sun2/dev/cons.h> 74 #endif 75 76 #include <sun2/sun2/machdep.h> 77 #include <dev/ic/z8530reg.h> 78 #include <dev/sun/kbd_reg.h> 79 80 /**************************************************************** 81 * Autoconfig 82 ****************************************************************/ 83 84 /* Definition of the driver for autoconfig. */ 85 static int zs_any_match(struct device *, struct cfdata *, void *); 86 static void zs_any_attach(struct device *, struct device *, void *); 87 88 CFATTACH_DECL(zs_obio, sizeof(struct zsc_softc), 89 zs_any_match, zs_any_attach, NULL, NULL); 90 91 CFATTACH_DECL(zs_obmem, sizeof(struct zsc_softc), 92 zs_any_match, zs_any_attach, NULL, NULL); 93 94 CFATTACH_DECL(zs_mbmem, sizeof(struct zsc_softc), 95 zs_any_match, zs_any_attach, NULL, NULL); 96 97 /* 98 * Is the zs chip present? 99 */ 100 static int 101 zs_any_match(struct device *parent, struct cfdata *cf, void *aux) 102 { 103 struct mainbus_attach_args *ma = aux; 104 bus_space_handle_t bh; 105 int matched; 106 107 /* Make sure there is something there... */ 108 if (bus_space_map(ma->ma_bustag, ma->ma_paddr, sizeof(struct zsdevice), 109 0, &bh)) 110 return (0); 111 matched = (bus_space_peek_1(ma->ma_bustag, bh, 0, NULL) == 0); 112 bus_space_unmap(ma->ma_bustag, bh, sizeof(struct zsdevice)); 113 if (!matched) 114 return (0); 115 116 /* Default interrupt priority (always splbio==2) */ 117 if (ma->ma_pri == -1) 118 ma->ma_pri = ZSHARD_PRI; 119 120 return (1); 121 } 122 123 /* 124 * Attach a found zs. 125 */ 126 static void 127 zs_any_attach(struct device *parent, struct device *self, void *aux) 128 { 129 struct zsc_softc *zsc = (void *) self; 130 struct mainbus_attach_args *ma = aux; 131 bus_space_handle_t bh; 132 133 zsc->zsc_bustag = ma->ma_bustag; 134 zsc->zsc_dmatag = ma->ma_dmatag; 135 /* XXX device_unit() abuse */ 136 zsc->zsc_promunit = device_unit(self); 137 zsc->zsc_node = 0; 138 139 /* Map in the device. */ 140 if (bus_space_map(ma->ma_bustag, ma->ma_paddr, sizeof(struct zsdevice), 141 BUS_SPACE_MAP_LINEAR, &bh)) 142 panic("zs_any_attach: can't map"); 143 144 /* This is where we break the bus_space(9) abstraction: */ 145 zs_attach(zsc, (void *)bh, ma->ma_pri); 146 } 147 148 int 149 zs_console_flags(int promunit, int node, int channel) 150 { 151 int cookie, flags = 0; 152 153 /* 154 * Use `promunit' and `channel' to derive the PROM 155 * stdio handles that correspond to this device. 156 */ 157 if (promunit == 0) 158 cookie = PROMDEV_TTYA + channel; 159 else if (promunit == 1 && channel == 0) 160 cookie = PROMDEV_KBD; 161 else 162 cookie = -1; 163 164 /* 165 * We have the console keyboard only if it's a Sun-2 166 * keyboard or better. (i.e., not a Sun-1 parallel kbd). 167 */ 168 if (cookie == prom_stdin() && 169 (cookie != PROMDEV_KBD || prom_kbdid() >= KB_SUN2)) 170 flags |= ZS_HWFLAG_CONSOLE_INPUT; 171 172 /* 173 * Prevent the keyboard from matching the output device 174 * (note that PROMDEV_KBD == PROMDEV_SCREEN == 0!). 175 */ 176 if (cookie != PROMDEV_KBD && cookie == prom_stdout()) 177 flags |= ZS_HWFLAG_CONSOLE_OUTPUT; 178 179 return (flags); 180 } 181 182 #ifdef KGDB 183 extern int sun68k_find_prom_map(bus_addr_t, bus_type_t, int, 184 bus_space_handle_t *); 185 186 /* 187 * Find a zs mapped by the PROM. Currently this only works to find 188 * zs0 on obio. 189 */ 190 void * 191 zs_find_prom(int unit) 192 { 193 bus_addr_t zs0_phys; 194 bus_space_handle_t bh; 195 196 if (unit != 0) 197 return (NULL); 198 199 /* 200 * The physical address of zs0 is model-dependent. 201 */ 202 zs0_phys = (cpu_machine_id == ID_SUN2_120 ? 0x002000 : 0x7f2000); 203 if (sun68k_find_prom_map(zs0_phys, PMAP_OBIO, sizeof(struct zsdevice), 204 &bh)) 205 return (NULL); 206 207 return (bh); 208 } 209 #endif /* KGDB */ 210
Indexes created Thu Sep 25 16:09:42 GMT 2025