1/* $NetBSD: com_obio.c,v 1.23 2009/11/21 04:16:51 rmind Exp $ */ 2 3/*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 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 * Copyright (c) 1991 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)com.c 7.5 (Berkeley) 5/16/91 61 */ 62 63#include <sys/cdefs.h> 64__KERNEL_RCSID(0, "$NetBSD: com_obio.c,v 1.23 2009/11/21 04:16:51 rmind Exp $"); 65 66#include <sys/param.h> 67#include <sys/systm.h> 68#include <sys/ioctl.h> 69#include <sys/select.h> 70#include <sys/tty.h> 71#include <sys/proc.h> 72#include <sys/conf.h> 73#include <sys/file.h> 74#include <sys/uio.h> 75#include <sys/kernel.h> 76#include <sys/syslog.h> 77#include <sys/types.h> 78#include <sys/device.h> 79#include <sys/termios.h> 80 81#include <sys/bus.h> 82#include <machine/autoconf.h> 83#include <machine/intr.h> 84 85#include <dev/ic/comreg.h> 86#include <dev/ic/comvar.h> 87 88#include <sparc/sparc/auxreg.h> 89 90struct com_obio_softc { 91 struct com_softc osc_com; /* real "com" softc */ 92 93 int osc_tadpole; /* is this on a tadpole */ 94 /* OBIO-specific goo. */ 95 struct evcnt osc_intrcnt; /* interrupt counting */ 96}; 97 98static int com_obio_match(device_t, cfdata_t , void *); 99static void com_obio_attach(device_t, device_t, void *); 100 101CFATTACH_DECL_NEW(com_obio, sizeof(struct com_obio_softc), 102 com_obio_match, com_obio_attach, NULL, NULL); 103 104static int 105com_obio_match(device_t parent, cfdata_t cf, void *aux) 106{ 107 union obio_attach_args *uoba = aux; 108 struct sbus_attach_args *sa = &uoba->uoba_sbus; 109 int tadpole = 0; 110 int need_probe = 0; 111 int rv = 0; 112 uint8_t auxregval = 0; 113 114 if (uoba->uoba_isobio4 != 0) { 115 return (0); 116 } 117 118 /* 119 * Tadpole 3GX/3GS uses "modem" for a 16450 port 120 * (We need to enable it before probing) 121 */ 122 if (strcmp("modem", sa->sa_name) == 0) { 123 auxregval = *AUXIO4M_REG; 124 *AUXIO4M_REG = auxregval | (AUXIO4M_LED|AUXIO4M_LTE); 125 DELAY(100); 126 tadpole = 1; 127 need_probe = 1; 128 } 129 130 /* 131 * Sun JavaStation 1 uses "su" for a 16550 port 132 */ 133 if (strcmp("su", sa->sa_name) == 0) { 134 need_probe = 1; 135 } 136 137 if (need_probe) { 138 bus_space_handle_t ioh; 139 140 if (sbus_bus_map(sa->sa_bustag, 141 sa->sa_slot, sa->sa_offset, sa->sa_size, 142 BUS_SPACE_MAP_LINEAR, &ioh) == 0) { 143 rv = comprobe1(sa->sa_bustag, ioh); 144#if 0 145 printf("modem: probe: lcr=0x%02x iir=0x%02x\n", 146 bus_space_read_1(sa->sa_bustag, ioh, 3), 147 bus_space_read_1(sa->sa_bustag, ioh, 2)); 148#endif 149 bus_space_unmap(sa->sa_bustag, ioh, sa->sa_size); 150 } 151 } 152 153 /* Disable the com port if tadpole */ 154 if (tadpole) 155 *AUXIO4M_REG = auxregval; 156 157 return (rv); 158} 159 160static void 161com_obio_attach(device_t parent, device_t self, void *aux) 162{ 163 struct com_obio_softc *osc = device_private(self); 164 struct com_softc *sc = &osc->osc_com; 165 union obio_attach_args *uoba = aux; 166 struct sbus_attach_args *sa = &uoba->uoba_sbus; 167 bus_space_handle_t ioh; 168 bus_space_tag_t iot; 169 bus_addr_t iobase; 170 171 sc->sc_dev = self; 172 173 if (strcmp("modem", sa->sa_name) == 0) { 174 osc->osc_tadpole = 1; 175 } 176 177 /* 178 * We're living on an obio that looks like an sbus slot. 179 */ 180 iot = sa->sa_bustag; 181 iobase = sa->sa_offset; 182 sc->sc_frequency = COM_FREQ; 183 184 /* 185 * XXX: It would be nice to be able to split console input and 186 * output to different devices. For now switch to serial 187 * console if PROM stdin is on serial (so that we can use DDB). 188 */ 189 if (prom_instance_to_package(prom_stdin()) == sa->sa_node) 190 comcnattach(iot, iobase, B9600, sc->sc_frequency, 191 COM_TYPE_NORMAL, (CLOCAL | CREAD | CS8)); 192 193 if (!com_is_console(iot, iobase, &ioh) && 194 sbus_bus_map(iot, sa->sa_slot, iobase, sa->sa_size, 195 BUS_SPACE_MAP_LINEAR, &ioh) != 0) { 196 aprint_error(": can't map registers\n"); 197 return; 198 } 199 200 COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase); 201 202 if (osc->osc_tadpole) { 203 *AUXIO4M_REG |= (AUXIO4M_LED|AUXIO4M_LTE); 204 do { 205 DELAY(100); 206 } while (!com_probe_subr(&sc->sc_regs)); 207#if 0 208 printf("modem: attach: lcr=0x%02x iir=0x%02x\n", 209 bus_space_read_1(sc->sc_regs.iot, sc->sc_regs.ioh, 3), 210 bus_space_read_1(sc->sc_regs.iot, sc->sc_regs.ioh, 2)); 211#endif 212 } 213 214 com_attach_subr(sc); 215 216 if (sa->sa_nintr != 0) { 217 (void)bus_intr_establish(sc->sc_regs.cr_iot, sa->sa_pri, 218 IPL_SERIAL, comintr, sc); 219 evcnt_attach_dynamic(&osc->osc_intrcnt, EVCNT_TYPE_INTR, NULL, 220 device_xname(self), "intr"); 221 } 222 223 if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup)) { 224 aprint_error_dev(self, "could not establish shutdown hook"); 225 } 226} 227