1 /* $NetBSD: com_ebus.c,v 1.28 2008/05/29 14:51:26 mrg 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 1.28 2008/05/29 14:51:26 mrg 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 <machine/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 NULL 67 }; 68 69 int 70 com_ebus_match(device_t parent, cfdata_t match, void *aux) 71 { 72 struct ebus_attach_args *ea = aux; 73 int i; 74 75 for (i = 0; com_names[i]; i++) 76 if (strcmp(ea->ea_name, com_names[i]) == 0) 77 return (1); 78 79 if (strcmp(ea->ea_name, "serial") == 0) { 80 char *compat; 81 82 /* Could be anything. */ 83 compat = prom_getpropstring(ea->ea_node, "compatible"); 84 if (strcmp(compat, "su16550") == 0 || 85 strcmp(compat, "su") == 0) { 86 return (1); 87 } 88 } 89 return (0); 90 } 91 92 #define BAUD_BASE (1846200) 93 94 void 95 com_ebus_attach(device_t parent, device_t self, void *aux) 96 { 97 struct com_softc *sc = device_private(self); 98 struct ebus_attach_args *ea = aux; 99 struct kbd_ms_tty_attach_args kma; 100 #if (NKBD > 0) || (NMS > 0) 101 int maj; 102 extern const struct cdevsw com_cdevsw; 103 #endif 104 int i; 105 int com_is_input; 106 int com_is_output; 107 bus_space_handle_t ioh; 108 bus_space_tag_t iot; 109 bus_addr_t iobase; 110 111 sc->sc_dev = self; 112 iot = ea->ea_bustag; 113 iobase = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]); 114 115 /* 116 * Addresses that should be supplied by the prom: 117 * - normal com registers 118 * - ns873xx configuration registers 119 * - DMA space 120 * The `com' driver does not use DMA accesses, so we can 121 * ignore that for now. We should enable the com port in 122 * the ns873xx registers here. XXX 123 * 124 * Use the prom address if there. 125 */ 126 127 if (ea->ea_nvaddr) 128 sparc_promaddr_to_handle(iot, ea->ea_vaddr[0], 129 &ioh); 130 else if (bus_space_map(iot, iobase, 131 ea->ea_reg[0].size, 0, &ioh) != 0) { 132 aprint_error(": can't map register space\n"); 133 return; 134 } 135 COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase); 136 137 sc->sc_hwflags = 0; 138 sc->sc_frequency = BAUD_BASE; 139 140 for (i = 0; i < ea->ea_nintr; i++) 141 bus_intr_establish(ea->ea_bustag, ea->ea_intr[i], 142 IPL_SERIAL, comintr, sc); 143 144 kma.kmta_consdev = NULL; 145 146 /* Figure out if we're the console. */ 147 com_is_input = (ea->ea_node == prom_instance_to_package(prom_stdin())); 148 com_is_output = (ea->ea_node == prom_instance_to_package(prom_stdout())); 149 150 if (com_is_input || com_is_output) { 151 extern struct consdev comcons; 152 struct consdev *cn_orig; 153 154 /* Record some info to attach console. */ 155 kma.kmta_baud = 9600; 156 kma.kmta_cflag = (CREAD | CS8 | HUPCL); 157 158 /* Attach com as the console. */ 159 cn_orig = cn_tab; 160 if (comcnattach(iot, iobase, kma.kmta_baud, 161 sc->sc_frequency, COM_TYPE_NORMAL, kma.kmta_cflag)) { 162 aprint_error("Error: comcnattach failed\n"); 163 } 164 cn_tab = cn_orig; 165 if (com_is_input) { 166 cn_tab->cn_dev = comcons.cn_dev; 167 cn_tab->cn_probe = comcons.cn_probe; 168 cn_tab->cn_init = comcons.cn_init; 169 cn_tab->cn_getc = comcons.cn_getc; 170 cn_tab->cn_pollc = comcons.cn_pollc; 171 } 172 if (com_is_output) { 173 cn_tab->cn_putc = comcons.cn_putc; 174 } 175 kma.kmta_consdev = cn_tab; 176 } 177 /* Now attach the driver */ 178 com_attach_subr(sc); 179 180 #if (NKBD > 0) || (NMS > 0) 181 kma.kmta_tp = sc->sc_tty; 182 /* If we figure out we're the console we should point this to our consdev */ 183 184 /* locate the major number */ 185 maj = cdevsw_lookup_major(&com_cdevsw); 186 187 kma.kmta_dev = makedev(maj, device_unit(sc->sc_dev)); 188 189 /* Attach 'em if we got 'em. */ 190 #if (NKBD > 0) 191 kma.kmta_name = "keyboard"; 192 if (prom_getproplen(ea->ea_node, kma.kmta_name) == 0) { 193 config_found(self, (void *)&kma, NULL); 194 } 195 #endif 196 #if (NMS > 0) 197 kma.kmta_name = "mouse"; 198 if (prom_getproplen(ea->ea_node, kma.kmta_name) == 0) { 199 config_found(self, (void *)&kma, NULL); 200 } 201 #endif 202 #endif 203 if (kma.kmta_consdev) { 204 /* 205 * If we're the keyboard then we need the original 206 * cn_tab w/prom I/O, which sunkbd copied into kma. 207 * Otherwise we want conscom which we copied into 208 * kma.kmta_consdev. 209 */ 210 cn_tab = kma.kmta_consdev; 211 } 212 } 213