1 /* $NetBSD: zs_any.c,v 1.18 2008/04/28 20:23:37 martin 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 * 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 /* 33 * Zilog Z8530 Dual UART driver (machine-dependent part) 34 * 35 * Runs two serial lines per chip using slave drivers. 36 * Plain tty/async lines use the zs_async slave. 37 * Sun keyboard/mouse uses the zs_kbd/zs_ms slaves. 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: zs_any.c,v 1.18 2008/04/28 20:23:37 martin Exp $"); 42 43 #include "opt_kgdb.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/conf.h> 48 #include <sys/device.h> 49 #include <sys/file.h> 50 #include <sys/ioctl.h> 51 #include <sys/kernel.h> 52 #include <sys/proc.h> 53 #include <sys/tty.h> 54 #include <sys/time.h> 55 #include <sys/syslog.h> 56 57 #include <machine/autoconf.h> 58 #include <machine/bus.h> 59 #include <machine/z8530var.h> 60 61 #ifdef KGDB 62 #include <uvm/uvm_extern.h> 63 64 #include <machine/idprom.h> 65 #include <machine/pmap.h> 66 #include <sun2/dev/cons.h> 67 #endif 68 69 #include <sun2/sun2/machdep.h> 70 #include <dev/ic/z8530reg.h> 71 #include <dev/sun/kbd_reg.h> 72 73 /**************************************************************** 74 * Autoconfig 75 ****************************************************************/ 76 77 /* Definition of the driver for autoconfig. */ 78 static int zs_any_match(device_t, cfdata_t, void *); 79 static void zs_any_attach(device_t, device_t, void *); 80 81 CFATTACH_DECL_NEW(zs_obio, sizeof(struct zsc_softc), 82 zs_any_match, zs_any_attach, NULL, NULL); 83 84 CFATTACH_DECL_NEW(zs_obmem, sizeof(struct zsc_softc), 85 zs_any_match, zs_any_attach, NULL, NULL); 86 87 CFATTACH_DECL_NEW(zs_mbmem, sizeof(struct zsc_softc), 88 zs_any_match, zs_any_attach, NULL, NULL); 89 90 /* 91 * Is the zs chip present? 92 */ 93 static int 94 zs_any_match(device_t parent, cfdata_t cf, void *aux) 95 { 96 struct mainbus_attach_args *ma = aux; 97 bus_space_handle_t bh; 98 int matched; 99 100 /* Make sure there is something there... */ 101 if (bus_space_map(ma->ma_bustag, ma->ma_paddr, sizeof(struct zsdevice), 102 0, &bh)) 103 return (0); 104 matched = (bus_space_peek_1(ma->ma_bustag, bh, 0, NULL) == 0); 105 bus_space_unmap(ma->ma_bustag, bh, sizeof(struct zsdevice)); 106 if (!matched) 107 return (0); 108 109 /* Default interrupt priority (always splbio==2) */ 110 if (ma->ma_pri == -1) 111 ma->ma_pri = ZSHARD_PRI; 112 113 return (1); 114 } 115 116 /* 117 * Attach a found zs. 118 */ 119 static void 120 zs_any_attach(device_t parent, device_t self, void *aux) 121 { 122 struct zsc_softc *zsc = device_private(self); 123 struct mainbus_attach_args *ma = aux; 124 bus_space_handle_t bh; 125 126 zsc->zsc_dev = self; 127 zsc->zsc_bustag = ma->ma_bustag; 128 zsc->zsc_dmatag = ma->ma_dmatag; 129 /* XXX device_unit() abuse */ 130 zsc->zsc_promunit = device_unit(self); 131 zsc->zsc_node = 0; 132 133 /* Map in the device. */ 134 if (bus_space_map(ma->ma_bustag, ma->ma_paddr, sizeof(struct zsdevice), 135 BUS_SPACE_MAP_LINEAR, &bh)) { 136 aprint_normal("\n"); 137 panic("%s: can't map", __func__); 138 } 139 140 /* This is where we break the bus_space(9) abstraction: */ 141 zs_attach(zsc, (void *)bh, ma->ma_pri); 142 } 143 144 int 145 zs_console_flags(int promunit, int node, int channel) 146 { 147 int cookie, flags = 0; 148 149 /* 150 * Use `promunit' and `channel' to derive the PROM 151 * stdio handles that correspond to this device. 152 */ 153 if (promunit == 0) 154 cookie = PROMDEV_TTYA + channel; 155 else if (promunit == 1 && channel == 0) 156 cookie = PROMDEV_KBD; 157 else 158 cookie = -1; 159 160 /* 161 * We have the console keyboard only if it's a Sun-2 162 * keyboard or better. (i.e., not a Sun-1 parallel kbd). 163 */ 164 if (cookie == prom_stdin() && 165 (cookie != PROMDEV_KBD || prom_kbdid() >= KB_SUN2)) 166 flags |= ZS_HWFLAG_CONSOLE_INPUT; 167 168 /* 169 * Prevent the keyboard from matching the output device 170 * (note that PROMDEV_KBD == PROMDEV_SCREEN == 0!). 171 */ 172 if (cookie != PROMDEV_KBD && cookie == prom_stdout()) 173 flags |= ZS_HWFLAG_CONSOLE_OUTPUT; 174 175 return (flags); 176 } 177 178 #ifdef KGDB 179 /* 180 * Find a zs mapped by the PROM. Currently this only works to find 181 * zs0 on obio. 182 */ 183 void * 184 zs_find_prom(int unit) 185 { 186 bus_addr_t zs0_phys; 187 vaddr_t va; 188 189 if (unit != 0) 190 return (NULL); 191 192 /* 193 * The physical address of zs0 is model-dependent. 194 */ 195 zs0_phys = (cpu_machine_id == ID_SUN2_120 ? 0x002000 : 0x7f2000); 196 if (find_prom_map(zs0_phys, PMAP_OBIO, sizeof(struct zsdevice), &va)) 197 return (NULL); 198 199 return (void *)va; 200 } 201 #endif /* KGDB */ 202
Indexes created Sat Sep 20 22:09:52 GMT 2025