1 /* $NetBSD: com_ebus.c,v 1.3 2000/12/03 14:49:50 fvdl 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/types.h> 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/device.h> 39 #include <sys/tty.h> 40 #include <sys/conf.h> 41 42 #include <machine/bus.h> 43 #include <machine/autoconf.h> 44 #include <machine/openfirm.h> 45 46 #include <sparc64/dev/ebusreg.h> 47 #include <sparc64/dev/ebusvar.h> 48 49 #include <dev/cons.h> 50 #include <dev/ic/comvar.h> 51 #include <dev/sun/kbd_ms_ttyvar.h> 52 53 #include "kbd.h" 54 #include "ms.h" 55 56 cdev_decl(com); /* XXX this belongs elsewhere */ 57 58 int com_ebus_match __P((struct device *, struct cfdata *, void *)); 59 void com_ebus_attach __P((struct device *, struct device *, void *)); 60 int com_ebus_isconsole __P((int node)); 61 62 struct cfattach com_ebus_ca = { 63 sizeof(struct com_softc), com_ebus_match, com_ebus_attach 64 }; 65 66 static char *com_names[] = { 67 "su", 68 "su_pnp", 69 NULL 70 }; 71 72 int 73 com_ebus_match(parent, match, aux) 74 struct device *parent; 75 struct cfdata *match; 76 void *aux; 77 { 78 struct ebus_attach_args *ea = aux; 79 int i; 80 81 for (i=0; com_names[i]; i++) 82 if (strcmp(ea->ea_name, com_names[i]) == 0) 83 return (1); 84 85 return (0); 86 } 87 88 int 89 com_ebus_isconsole(node) 90 int node; 91 { 92 u_int chosen; 93 94 /* 95 * We'll just to the OBP grovelling down here since that's 96 * the only type of firmware we support. 97 */ 98 chosen = OF_finddevice("/chosen"); 99 100 if (node == OF_instance_to_package(OF_stdin())) { 101 return (1); 102 } 103 104 if (node == OF_instance_to_package(OF_stdout())) { 105 return (1); 106 } 107 108 return (0); 109 } 110 111 #define BAUD_BASE (1846200) 112 113 void 114 com_ebus_attach(parent, self, aux) 115 struct device *parent, *self; 116 void *aux; 117 { 118 struct com_softc *sc = (void *)self; 119 struct ebus_attach_args *ea = aux; 120 struct kbd_ms_tty_attach_args kma; 121 #if (NKBD > 0) || (NMS > 0) 122 int maj; 123 #endif 124 int i; 125 126 sc->sc_iot = ea->ea_bustag; 127 sc->sc_iobase = EBUS_PADDR_FROM_REG(&ea->ea_regs[0]); 128 /* 129 * Addresses that shoud be supplied by the prom: 130 * - normal com registers 131 * - ns873xx configuration registers 132 * - DMA space 133 * The `com' driver does not use DMA accesses, so we can 134 * ignore that for now. We should enable the com port in 135 * the ns873xx registers here. XXX 136 * 137 * Use the prom address if there. 138 */ 139 if (ea->ea_nvaddrs) 140 sc->sc_ioh = (bus_space_handle_t)ea->ea_vaddrs[0]; 141 else if (ebus_bus_map(sc->sc_iot, 0, 142 EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), 143 ea->ea_regs[0].size, 144 BUS_SPACE_MAP_LINEAR, 145 0, &sc->sc_ioh) != 0) { 146 printf(": can't map register space\n"); 147 return; 148 } 149 sc->sc_hwflags = 0; 150 sc->sc_frequency = BAUD_BASE; 151 152 for (i = 0; i < ea->ea_nintrs; i++) 153 bus_intr_establish(ea->ea_bustag, ea->ea_intrs[i], 0, 154 IPL_SERIAL, comintr, sc); 155 printf("\n"); 156 157 com_attach_subr(sc); 158 159 kma.kmta_consdev = NULL; 160 if (com_ebus_isconsole(ea->ea_node)) { 161 extern struct consdev comcons; 162 163 /* Record some info to attach console. */ 164 kma.kmta_baud = 9600; 165 kma.kmta_cflag = (CREAD | CS8 | HUPCL); 166 kma.kmta_consdev = &comcons; 167 } 168 169 #if (NKBD > 0) || (NMS > 0) 170 kma.kmta_tp = sc->sc_tty; 171 /* If we figure out we're the console we should point this to our consdev */ 172 173 /* locate the major number */ 174 for (maj = 0; maj < nchrdev; maj++) 175 if (cdevsw[maj].d_open == comopen) 176 break; 177 178 kma.kmta_dev = makedev(maj, sc->sc_dev.dv_unit); 179 180 /* Attach 'em if we got 'em. */ 181 #if (NKBD > 0) 182 kma.kmta_name = "keyboard"; 183 if (getproplen(ea->ea_node, kma.kmta_name) == 0) { 184 config_found(self, (void *)&kma, NULL); 185 } 186 #endif 187 #if (NMS > 0) 188 kma.kmta_name = "mouse"; 189 if (getproplen(ea->ea_node, kma.kmta_name) == 0) { 190 config_found(self, (void *)&kma, NULL); 191 } 192 #endif 193 #endif 194 if (kma.kmta_consdev) { 195 /* Attach com as the console. */ 196 if (comcnattach(sc->sc_iot, sc->sc_iobase, kma.kmta_baud, 197 sc->sc_frequency, kma.kmta_cflag)) { 198 printf("Error: comcnattach failed\n"); 199 } 200 /* 201 * If we're the keyboard then we need the original 202 * cn_tab w/prom I/O, which sunkbd copied into kma. 203 * Otherwise we want conscom which we copied into 204 * kma.kmta_consdev. 205 */ 206 cn_tab = kma.kmta_consdev; 207 } 208 } 209 210