com_obio.c revision 1.15
1 /* $NetBSD: com_obio.c,v 1.15 2003/07/15 00:04:53 lukem 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1991 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)com.c 7.5 (Berkeley) 5/16/91 72 */ 73 74 #include <sys/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: com_obio.c,v 1.15 2003/07/15 00:04:53 lukem Exp $"); 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/ioctl.h> 80 #include <sys/select.h> 81 #include <sys/tty.h> 82 #include <sys/proc.h> 83 #include <sys/user.h> 84 #include <sys/conf.h> 85 #include <sys/file.h> 86 #include <sys/uio.h> 87 #include <sys/kernel.h> 88 #include <sys/syslog.h> 89 #include <sys/types.h> 90 #include <sys/device.h> 91 #include <sys/termios.h> 92 93 #include <machine/bus.h> 94 #include <machine/autoconf.h> 95 #include <machine/intr.h> 96 97 #include <dev/ic/comreg.h> 98 #include <dev/ic/comvar.h> 99 100 #include <sparc/sparc/auxreg.h> 101 102 struct com_obio_softc { 103 struct com_softc osc_com; /* real "com" softc */ 104 105 int osc_tadpole; /* is this on a tadpole */ 106 /* OBIO-specific goo. */ 107 struct evcnt osc_intrcnt; /* interrupt counting */ 108 }; 109 110 static int com_obio_match __P((struct device *, struct cfdata *, void *)); 111 static void com_obio_attach __P((struct device *, struct device *, void *)); 112 static void com_obio_cleanup __P((void *)); 113 114 CFATTACH_DECL(com_obio, sizeof(struct com_obio_softc), 115 com_obio_match, com_obio_attach, NULL, NULL); 116 117 static int 118 com_obio_match(parent, cf, aux) 119 struct device *parent; 120 struct cfdata *cf; 121 void *aux; 122 { 123 union obio_attach_args *uoba = aux; 124 struct sbus_attach_args *sa = &uoba->uoba_sbus; 125 int tadpole = 0; 126 int need_probe = 0; 127 int rv = 0; 128 u_int8_t auxregval; 129 130 if (uoba->uoba_isobio4 != 0) { 131 return (0); 132 } 133 134 /* Tadpole 3GX/3GS uses "modem" for a 16450 port 135 * (We need to enable it before probing) 136 */ 137 if (strcmp("modem", sa->sa_name) == 0) { 138 auxregval = *AUXIO4M_REG; 139 *AUXIO4M_REG = auxregval | (AUXIO4M_LED|AUXIO4M_LTE); 140 DELAY(100); 141 tadpole = 1; 142 need_probe = 1; 143 } 144 145 /* Sun JavaStation 1 uses "su" for a 16550 port 146 */ 147 if (strcmp("su", sa->sa_name) == 0) { 148 need_probe = 1; 149 } 150 151 if (need_probe) { 152 bus_space_handle_t ioh; 153 154 if (sbus_bus_map(sa->sa_bustag, 155 sa->sa_slot, sa->sa_offset, sa->sa_size, 156 BUS_SPACE_MAP_LINEAR, &ioh) == 0) { 157 rv = comprobe1(sa->sa_bustag, ioh); 158 #if 0 159 printf("modem: probe: lcr=0x%02x iir=0x%02x\n", 160 bus_space_read_1(sa->sa_bustag, ioh, 3), 161 bus_space_read_1(sa->sa_bustag, ioh, 2)); 162 #endif 163 bus_space_unmap(sa->sa_bustag, ioh, sa->sa_size); 164 } 165 } 166 167 /* Disable the com port if tadpole */ 168 if (tadpole) 169 *AUXIO4M_REG = auxregval; 170 171 return (rv); 172 } 173 174 static void 175 com_obio_attach(parent, self, aux) 176 struct device *parent, *self; 177 void *aux; 178 { 179 struct com_obio_softc *osc = (void *)self; 180 struct com_softc *sc = &osc->osc_com; 181 union obio_attach_args *uoba = aux; 182 struct sbus_attach_args *sa = &uoba->uoba_sbus; 183 184 if (strcmp("modem", sa->sa_name) == 0) { 185 osc->osc_tadpole = 1; 186 } 187 188 /* 189 * We're living on an obio that looks like an sbus slot. 190 */ 191 sc->sc_iot = sa->sa_bustag; 192 sc->sc_iobase = sa->sa_offset; 193 sc->sc_frequency = COM_FREQ; 194 195 /* 196 * XXX: It would be nice to be able to split console input and 197 * output to different devices. For now switch to serial 198 * console if PROM stdin is on serial (so that we can use DDB). 199 */ 200 if (prom_instance_to_package(prom_stdin()) == sa->sa_node) 201 comcnattach(sc->sc_iot, sc->sc_iobase, 202 B9600, sc->sc_frequency, COM_TYPE_NORMAL, 203 (CLOCAL | CREAD | CS8)); 204 205 if (!com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) && 206 sbus_bus_map(sc->sc_iot, 207 sa->sa_slot, sc->sc_iobase, sa->sa_size, 208 BUS_SPACE_MAP_LINEAR, &sc->sc_ioh) != 0) { 209 printf(": can't map registers\n"); 210 return; 211 } 212 213 if (osc->osc_tadpole) { 214 *AUXIO4M_REG |= (AUXIO4M_LED|AUXIO4M_LTE); 215 do { 216 DELAY(100); 217 } while (!comprobe1(sc->sc_iot, sc->sc_ioh)); 218 #if 0 219 printf("modem: attach: lcr=0x%02x iir=0x%02x\n", 220 bus_space_read_1(sc->sc_iot, sc->sc_ioh, 3), 221 bus_space_read_1(sc->sc_iot, sc->sc_ioh, 2)); 222 #endif 223 } 224 225 com_attach_subr(sc); 226 227 if (sa->sa_nintr != 0) { 228 (void)bus_intr_establish(sc->sc_iot, sa->sa_pri, IPL_SERIAL, 229 comintr, sc); 230 evcnt_attach_dynamic(&osc->osc_intrcnt, EVCNT_TYPE_INTR, NULL, 231 osc->osc_com.sc_dev.dv_xname, "intr"); 232 } 233 234 /* 235 * Shutdown hook for buggy BIOSs that don't recognize the UART 236 * without a disabled FIFO. 237 */ 238 if (shutdownhook_establish(com_obio_cleanup, sc) == NULL) { 239 panic("com_obio_attach: could not establish shutdown hook"); 240 } 241 } 242 243 static void 244 com_obio_cleanup(arg) 245 void *arg; 246 { 247 struct com_softc *sc = arg; 248 249 if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) 250 bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0); 251 } 252
Indexes created Wed Sep 24 05:09:52 GMT 2025