1 /* $NetBSD: com_ebus.c,v 1.26 2006/07/13 22:56:02 gdamore 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /* 32 * NS Super I/O PC87332VLJ "com" to ebus attachment 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: com_ebus.c,v 1.26 2006/07/13 22:56:02 gdamore Exp $"); 37 38 #include <sys/types.h> 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/device.h> 42 #include <sys/tty.h> 43 #include <sys/conf.h> 44 45 #include <machine/bus.h> 46 #include <machine/autoconf.h> 47 #include <machine/openfirm.h> 48 49 #include <dev/ebus/ebusreg.h> 50 #include <dev/ebus/ebusvar.h> 51 52 #include <dev/cons.h> 53 #include <dev/ic/comvar.h> 54 #include <dev/sun/kbd_ms_ttyvar.h> 55 56 #include "kbd.h" 57 #include "ms.h" 58 59 int com_ebus_match(struct device *, struct cfdata *, void *); 60 void com_ebus_attach(struct device *, struct device *, void *); 61 62 CFATTACH_DECL(com_ebus, sizeof(struct com_softc), 63 com_ebus_match, com_ebus_attach, NULL, NULL); 64 65 static const char *com_names[] = { 66 "su", 67 "su_pnp", 68 NULL 69 }; 70 71 int 72 com_ebus_match(struct device *parent, struct cfdata *match, void *aux) 73 { 74 struct ebus_attach_args *ea = aux; 75 int i; 76 77 for (i = 0; com_names[i]; i++) 78 if (strcmp(ea->ea_name, com_names[i]) == 0) 79 return (1); 80 81 if (strcmp(ea->ea_name, "serial") == 0) { 82 char *compat; 83 84 /* Could be anything. */ 85 compat = prom_getpropstring(ea->ea_node, "compatible"); 86 if (strcmp(compat, "su16550") == 0 || 87 strcmp(compat, "su") == 0) { 88 return (1); 89 } 90 } 91 return (0); 92 } 93 94 #define BAUD_BASE (1846200) 95 96 void 97 com_ebus_attach(struct device *parent, struct device *self, void *aux) 98 { 99 struct com_softc *sc = (void *)self; 100 struct ebus_attach_args *ea = aux; 101 struct kbd_ms_tty_attach_args kma; 102 #if (NKBD > 0) || (NMS > 0) 103 int maj; 104 extern const struct cdevsw com_cdevsw; 105 #endif 106 int i; 107 int com_is_input; 108 int com_is_output; 109 bus_space_handle_t ioh; 110 bus_space_tag_t iot; 111 bus_addr_t iobase; 112 113 iot = ea->ea_bustag; 114 iobase = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]); 115 116 /* 117 * Addresses that should be supplied by the prom: 118 * - normal com registers 119 * - ns873xx configuration registers 120 * - DMA space 121 * The `com' driver does not use DMA accesses, so we can 122 * ignore that for now. We should enable the com port in 123 * the ns873xx registers here. XXX 124 * 125 * Use the prom address if there. 126 */ 127 128 if (ea->ea_nvaddr) 129 sparc_promaddr_to_handle(iot, ea->ea_vaddr[0], 130 &ioh); 131 else if (bus_space_map(iot, iobase, 132 ea->ea_reg[0].size, 0, &ioh) != 0) { 133 printf(": can't map register space\n"); 134 return; 135 } 136 COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase); 137 138 sc->sc_hwflags = 0; 139 sc->sc_frequency = BAUD_BASE; 140 141 for (i = 0; i < ea->ea_nintr; i++) 142 bus_intr_establish(ea->ea_bustag, ea->ea_intr[i], 143 IPL_SERIAL, comintr, sc); 144 145 kma.kmta_consdev = NULL; 146 147 /* Figure out if we're the console. */ 148 com_is_input = (ea->ea_node == prom_instance_to_package(prom_stdin())); 149 com_is_output = (ea->ea_node == prom_instance_to_package(prom_stdout())); 150 151 if (com_is_input || com_is_output) { 152 extern struct consdev comcons; 153 struct consdev *cn_orig; 154 155 /* Record some info to attach console. */ 156 kma.kmta_baud = 9600; 157 kma.kmta_cflag = (CREAD | CS8 | HUPCL); 158 159 /* Attach com as the console. */ 160 cn_orig = cn_tab; 161 if (comcnattach(iot, iobase, kma.kmta_baud, 162 sc->sc_frequency, COM_TYPE_NORMAL, kma.kmta_cflag)) { 163 printf("Error: comcnattach failed\n"); 164 } 165 cn_tab = cn_orig; 166 if (com_is_input) { 167 cn_tab->cn_dev = comcons.cn_dev; 168 cn_tab->cn_probe = comcons.cn_probe; 169 cn_tab->cn_init = comcons.cn_init; 170 cn_tab->cn_getc = comcons.cn_getc; 171 cn_tab->cn_pollc = comcons.cn_pollc; 172 } 173 if (com_is_output) { 174 cn_tab->cn_putc = comcons.cn_putc; 175 } 176 kma.kmta_consdev = cn_tab; 177 } 178 /* Now attach the driver */ 179 com_attach_subr(sc); 180 181 #if (NKBD > 0) || (NMS > 0) 182 kma.kmta_tp = sc->sc_tty; 183 /* If we figure out we're the console we should point this to our consdev */ 184 185 /* locate the major number */ 186 maj = cdevsw_lookup_major(&com_cdevsw); 187 188 kma.kmta_dev = makedev(maj, device_unit(&sc->sc_dev)); 189 190 /* Attach 'em if we got 'em. */ 191 #if (NKBD > 0) 192 kma.kmta_name = "keyboard"; 193 if (prom_getproplen(ea->ea_node, kma.kmta_name) == 0) { 194 config_found(self, (void *)&kma, NULL); 195 } 196 #endif 197 #if (NMS > 0) 198 kma.kmta_name = "mouse"; 199 if (prom_getproplen(ea->ea_node, kma.kmta_name) == 0) { 200 config_found(self, (void *)&kma, NULL); 201 } 202 #endif 203 #endif 204 if (kma.kmta_consdev) { 205 /* 206 * If we're the keyboard then we need the original 207 * cn_tab w/prom I/O, which sunkbd copied into kma. 208 * Otherwise we want conscom which we copied into 209 * kma.kmta_consdev. 210 */ 211 cn_tab = kma.kmta_consdev; 212 } 213 } 214