com_ebus.c revision 1.36
1 /* $NetBSD: com_ebus.c,v 1.36 2021/08/07 16:19:05 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1999, 2000 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /* 30 * NS Super I/O PC87332VLJ "com" to ebus attachment 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: com_ebus.c,v 1.36 2021/08/07 16:19:05 thorpej Exp $"); 35 36 #include <sys/types.h> 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 #include <sys/tty.h> 41 #include <sys/conf.h> 42 43 #include <sys/bus.h> 44 #include <machine/autoconf.h> 45 #include <machine/openfirm.h> 46 47 #include <dev/ebus/ebusreg.h> 48 #include <dev/ebus/ebusvar.h> 49 50 #include <dev/cons.h> 51 #include <dev/ic/comvar.h> 52 #include <dev/sun/kbd_ms_ttyvar.h> 53 54 #include "kbd.h" 55 #include "ms.h" 56 57 int com_ebus_match(device_t, cfdata_t , void *); 58 void com_ebus_attach(device_t, device_t, void *); 59 60 CFATTACH_DECL_NEW(com_ebus, sizeof(struct com_softc), 61 com_ebus_match, com_ebus_attach, NULL, NULL); 62 63 static const char *com_names[] = { 64 "su", 65 "su_pnp", 66 "rsc-console", 67 NULL 68 }; 69 70 int 71 com_ebus_match(device_t parent, cfdata_t match, void *aux) 72 { 73 struct ebus_attach_args *ea = aux; 74 int i; 75 76 for (i = 0; com_names[i]; i++) 77 if (strcmp(ea->ea_name, com_names[i]) == 0) 78 return (1); 79 80 if (strcmp(ea->ea_name, "serial") == 0) { 81 char *compat; 82 83 /* Could be anything. */ 84 compat = prom_getpropstring(ea->ea_node, "compatible"); 85 if (strcmp(compat, "su16550") == 0 || 86 strcmp(compat, "su16552") == 0 || 87 strcmp(compat, "su") == 0 || 88 strcmp(compat, "FJSV,su") == 0) { 89 return (1); 90 } 91 } 92 return (0); 93 } 94 95 #define BAUD_BASE (1846200) 96 97 void 98 com_ebus_attach(device_t parent, device_t self, void *aux) 99 { 100 struct com_softc *sc = device_private(self); 101 struct ebus_attach_args *ea = aux; 102 struct kbd_ms_tty_attach_args kma; 103 #if (NKBD > 0) || (NMS > 0) 104 int maj; 105 extern const struct cdevsw com_cdevsw; 106 #endif 107 int i; 108 int com_is_input; 109 int com_is_output; 110 bus_space_handle_t ioh; 111 bus_space_tag_t iot; 112 bus_addr_t iobase; 113 int node, port; 114 char buf[32]; 115 116 sc->sc_dev = self; 117 iot = ea->ea_bustag; 118 iobase = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]); 119 120 /* 121 * Addresses that should be supplied by the prom: 122 * - normal com registers 123 * - ns873xx configuration registers 124 * - DMA space 125 * The `com' driver does not use DMA accesses, so we can 126 * ignore that for now. We should enable the com port in 127 * the ns873xx registers here. XXX 128 * 129 * Use the prom address if there. 130 */ 131 132 if (ea->ea_nvaddr) 133 sparc_promaddr_to_handle(iot, ea->ea_vaddr[0], 134 &ioh); 135 else if (bus_space_map(iot, iobase, 136 ea->ea_reg[0].size, 0, &ioh) != 0) { 137 aprint_error(": can't map register space\n"); 138 return; 139 } 140 com_init_regs(&sc->sc_regs, iot, ioh, iobase); 141 142 sc->sc_hwflags = 0; 143 sc->sc_frequency = BAUD_BASE; 144 145 for (i = 0; i < ea->ea_nintr; i++) 146 bus_intr_establish(ea->ea_bustag, ea->ea_intr[i], 147 IPL_SERIAL, comintr, sc); 148 149 kma.kmta_consdev = NULL; 150 151 /* 152 * Figure out if we're the console. 153 * 154 * The Fujitsu SPARC Enterprise M4000/M5000/M8000/M9000 has a 155 * serial port on each I/O board and a pseudo console that is 156 * redirected to one of these serial ports. The board number 157 * of the serial port in question is encoded in the "tty-port#" 158 * property of the pseudo console, so we figure out what our 159 * board number is by walking up the device tree, and check 160 * for a match. 161 */ 162 node = prom_instance_to_package(prom_stdin()); 163 com_is_input = (ea->ea_node == node); 164 if (OF_getprop(node, "name", buf, sizeof(buf)) > 0 && 165 strcmp(buf, "pseudo-console") == 0) { 166 port = prom_getpropint(node, "tty-port#", -1); 167 node = OF_parent(OF_parent(ea->ea_node)); 168 com_is_input = (prom_getpropint(node, "board#", -2) == port); 169 } 170 171 node = prom_instance_to_package(prom_stdout()); 172 com_is_output = (ea->ea_node == node); 173 if (OF_getprop(node, "name", buf, sizeof(buf)) > 0 && 174 strcmp(buf, "pseudo-console") == 0) { 175 port = prom_getpropint(node, "tty-port#", -1); 176 node = OF_parent(OF_parent(ea->ea_node)); 177 com_is_output = (prom_getpropint(node, "board#", -2) == port); 178 } 179 180 if (com_is_input || com_is_output) { 181 struct consdev *cn_orig; 182 183 /* Record some info to attach console. */ 184 if (strcmp(ea->ea_name, "rsc-console") == 0) 185 kma.kmta_baud = 115200; 186 else 187 kma.kmta_baud = 9600; 188 kma.kmta_cflag = (CREAD | CS8 | HUPCL); 189 190 /* Attach com as the console. */ 191 cn_orig = cn_tab; 192 if (comcnattach(iot, iobase, kma.kmta_baud, 193 sc->sc_frequency, COM_TYPE_NORMAL, kma.kmta_cflag)) { 194 aprint_error("Error: comcnattach failed\n"); 195 } 196 if (com_is_input) { 197 cn_orig->cn_dev = cn_tab->cn_dev; 198 cn_orig->cn_probe = cn_tab->cn_probe; 199 cn_orig->cn_init = cn_tab->cn_init; 200 cn_orig->cn_getc = cn_tab->cn_getc; 201 cn_orig->cn_pollc = cn_tab->cn_pollc; 202 } 203 if (com_is_output) { 204 cn_orig->cn_putc = cn_tab->cn_putc; 205 } 206 cn_tab = cn_orig; 207 kma.kmta_consdev = cn_tab; 208 } 209 210 /* 211 * Apparently shoving too much data down the TX FIFO on the 212 * Fujitsu SPARC Enterprise M4000/M5000 causes a hardware 213 * fault. Avoid this issue by setting the FIFO depth to 1. 214 * This will effectively disable the TX FIFO, but will still 215 * enable the RX FIFO, which is what we really care about. 216 */ 217 if (OF_getprop(ea->ea_node, "compatible", buf, sizeof(buf)) > 0 && 218 strcmp(buf, "FJSV,su") == 0) 219 sc->sc_fifolen = 1; 220 221 /* Now attach the driver */ 222 com_attach_subr(sc); 223 224 #if (NKBD > 0) || (NMS > 0) 225 kma.kmta_tp = sc->sc_tty; 226 /* If we figure out we're the console we should point this to our consdev */ 227 228 /* locate the major number */ 229 maj = cdevsw_lookup_major(&com_cdevsw); 230 231 kma.kmta_dev = makedev(maj, device_unit(sc->sc_dev)); 232 233 /* Attach 'em if we got 'em. */ 234 #if (NKBD > 0) 235 kma.kmta_name = "keyboard"; 236 if (prom_getproplen(ea->ea_node, kma.kmta_name) == 0) { 237 config_found(self, (void *)&kma, NULL, CFARGS_NONE); 238 } 239 #endif 240 #if (NMS > 0) 241 kma.kmta_name = "mouse"; 242 if (prom_getproplen(ea->ea_node, kma.kmta_name) == 0) { 243 config_found(self, (void *)&kma, NULL, CFARGS_NONE); 244 } 245 #endif 246 #endif 247 if (kma.kmta_consdev) { 248 /* 249 * If we're the keyboard then we need the original 250 * cn_tab w/prom I/O, which sunkbd copied into kma. 251 * Otherwise we want conscom which we copied into 252 * kma.kmta_consdev. 253 */ 254 cn_tab = kma.kmta_consdev; 255 } 256 } 257
Indexes created Tue Sep 30 20:09:53 GMT 2025