plcom.c revision 1.2.2.4
1 1.2.2.4 jdolecek /* $NetBSD: plcom.c,v 1.2.2.4 2002/10/10 18:32:23 jdolecek Exp $ */ 2 1.2.2.2 thorpej 3 1.2.2.2 thorpej /*- 4 1.2.2.2 thorpej * Copyright (c) 2001 ARM Ltd 5 1.2.2.2 thorpej * All rights reserved. 6 1.2.2.2 thorpej * 7 1.2.2.2 thorpej * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 thorpej * modification, are permitted provided that the following conditions 9 1.2.2.2 thorpej * are met: 10 1.2.2.2 thorpej * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 thorpej * documentation and/or other materials provided with the distribution. 15 1.2.2.2 thorpej * 3. The name of the company may not be used to endorse or promote 16 1.2.2.2 thorpej * products derived from this software without specific prior written 17 1.2.2.2 thorpej * permission. 18 1.2.2.2 thorpej * 19 1.2.2.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 20 1.2.2.2 thorpej * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 21 1.2.2.2 thorpej * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 1.2.2.2 thorpej * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 23 1.2.2.2 thorpej * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 1.2.2.2 thorpej * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 25 1.2.2.2 thorpej * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 1.2.2.2 thorpej * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 1.2.2.2 thorpej * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 1.2.2.2 thorpej * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 1.2.2.2 thorpej * SUCH DAMAGE. 30 1.2.2.2 thorpej * 31 1.2.2.2 thorpej * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 32 1.2.2.2 thorpej * All rights reserved. 33 1.2.2.2 thorpej * 34 1.2.2.2 thorpej * This code is derived from software contributed to The NetBSD Foundation 35 1.2.2.2 thorpej * by Charles M. Hannum. 36 1.2.2.2 thorpej * 37 1.2.2.2 thorpej * Redistribution and use in source and binary forms, with or without 38 1.2.2.2 thorpej * modification, are permitted provided that the following conditions 39 1.2.2.2 thorpej * are met: 40 1.2.2.2 thorpej * 1. Redistributions of source code must retain the above copyright 41 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer. 42 1.2.2.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 43 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer in the 44 1.2.2.2 thorpej * documentation and/or other materials provided with the distribution. 45 1.2.2.2 thorpej * 3. All advertising materials mentioning features or use of this software 46 1.2.2.2 thorpej * must display the following acknowledgement: 47 1.2.2.2 thorpej * This product includes software developed by the NetBSD 48 1.2.2.2 thorpej * Foundation, Inc. and its contributors. 49 1.2.2.2 thorpej * 4. Neither the name of The NetBSD Foundation nor the names of its 50 1.2.2.2 thorpej * contributors may be used to endorse or promote products derived 51 1.2.2.2 thorpej * from this software without specific prior written permission. 52 1.2.2.2 thorpej * 53 1.2.2.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 54 1.2.2.2 thorpej * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 55 1.2.2.2 thorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 56 1.2.2.2 thorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 57 1.2.2.2 thorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 58 1.2.2.2 thorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 59 1.2.2.2 thorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 60 1.2.2.2 thorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 61 1.2.2.2 thorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 62 1.2.2.2 thorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 63 1.2.2.2 thorpej * POSSIBILITY OF SUCH DAMAGE. 64 1.2.2.2 thorpej */ 65 1.2.2.2 thorpej 66 1.2.2.2 thorpej /* 67 1.2.2.2 thorpej * Copyright (c) 1991 The Regents of the University of California. 68 1.2.2.2 thorpej * All rights reserved. 69 1.2.2.2 thorpej * 70 1.2.2.2 thorpej * Redistribution and use in source and binary forms, with or without 71 1.2.2.2 thorpej * modification, are permitted provided that the following conditions 72 1.2.2.2 thorpej * are met: 73 1.2.2.2 thorpej * 1. Redistributions of source code must retain the above copyright 74 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer. 75 1.2.2.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 76 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer in the 77 1.2.2.2 thorpej * documentation and/or other materials provided with the distribution. 78 1.2.2.2 thorpej * 3. All advertising materials mentioning features or use of this software 79 1.2.2.2 thorpej * must display the following acknowledgement: 80 1.2.2.2 thorpej * This product includes software developed by the University of 81 1.2.2.2 thorpej * California, Berkeley and its contributors. 82 1.2.2.2 thorpej * 4. Neither the name of the University nor the names of its contributors 83 1.2.2.2 thorpej * may be used to endorse or promote products derived from this software 84 1.2.2.2 thorpej * without specific prior written permission. 85 1.2.2.2 thorpej * 86 1.2.2.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 87 1.2.2.2 thorpej * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 88 1.2.2.2 thorpej * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 89 1.2.2.2 thorpej * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 90 1.2.2.2 thorpej * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 91 1.2.2.2 thorpej * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 92 1.2.2.2 thorpej * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 93 1.2.2.2 thorpej * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 94 1.2.2.2 thorpej * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 95 1.2.2.2 thorpej * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 96 1.2.2.2 thorpej * SUCH DAMAGE. 97 1.2.2.2 thorpej * 98 1.2.2.2 thorpej * @(#)com.c 7.5 (Berkeley) 5/16/91 99 1.2.2.2 thorpej */ 100 1.2.2.2 thorpej 101 1.2.2.2 thorpej /* 102 1.2.2.2 thorpej * COM driver for the Prime Cell PL010 UART, which is similar to the 16C550, 103 1.2.2.2 thorpej * but has a completely different programmer's model. 104 1.2.2.2 thorpej * Derived from the NS16550AF com driver. 105 1.2.2.2 thorpej */ 106 1.2.2.2 thorpej 107 1.2.2.2 thorpej #include "opt_plcom.h" 108 1.2.2.2 thorpej #include "opt_ddb.h" 109 1.2.2.2 thorpej #include "opt_kgdb.h" 110 1.2.2.2 thorpej 111 1.2.2.2 thorpej #include "rnd.h" 112 1.2.2.2 thorpej #if NRND > 0 && defined(RND_COM) 113 1.2.2.2 thorpej #include <sys/rnd.h> 114 1.2.2.2 thorpej #endif 115 1.2.2.2 thorpej 116 1.2.2.2 thorpej /* 117 1.2.2.2 thorpej * Override cnmagic(9) macro before including <sys/systm.h>. 118 1.2.2.2 thorpej * We need to know if cn_check_magic triggered debugger, so set a flag. 119 1.2.2.2 thorpej * Callers of cn_check_magic must declare int cn_trapped = 0; 120 1.2.2.2 thorpej * XXX: this is *ugly*! 121 1.2.2.2 thorpej */ 122 1.2.2.2 thorpej #define cn_trap() \ 123 1.2.2.2 thorpej do { \ 124 1.2.2.2 thorpej console_debugger(); \ 125 1.2.2.2 thorpej cn_trapped = 1; \ 126 1.2.2.2 thorpej } while (/* CONSTCOND */ 0) 127 1.2.2.2 thorpej 128 1.2.2.2 thorpej #include <sys/param.h> 129 1.2.2.2 thorpej #include <sys/systm.h> 130 1.2.2.2 thorpej #include <sys/ioctl.h> 131 1.2.2.2 thorpej #include <sys/select.h> 132 1.2.2.2 thorpej #include <sys/tty.h> 133 1.2.2.2 thorpej #include <sys/proc.h> 134 1.2.2.2 thorpej #include <sys/user.h> 135 1.2.2.2 thorpej #include <sys/conf.h> 136 1.2.2.2 thorpej #include <sys/file.h> 137 1.2.2.2 thorpej #include <sys/uio.h> 138 1.2.2.2 thorpej #include <sys/kernel.h> 139 1.2.2.2 thorpej #include <sys/syslog.h> 140 1.2.2.2 thorpej #include <sys/types.h> 141 1.2.2.2 thorpej #include <sys/device.h> 142 1.2.2.2 thorpej #include <sys/malloc.h> 143 1.2.2.2 thorpej #include <sys/timepps.h> 144 1.2.2.2 thorpej #include <sys/vnode.h> 145 1.2.2.2 thorpej 146 1.2.2.2 thorpej #include <machine/intr.h> 147 1.2.2.2 thorpej #include <machine/bus.h> 148 1.2.2.2 thorpej 149 1.2.2.2 thorpej #include <evbarm/dev/plcomreg.h> 150 1.2.2.2 thorpej #include <evbarm/dev/plcomvar.h> 151 1.2.2.2 thorpej 152 1.2.2.2 thorpej #include <dev/cons.h> 153 1.2.2.2 thorpej 154 1.2.2.2 thorpej static void plcom_enable_debugport (struct plcom_softc *); 155 1.2.2.2 thorpej 156 1.2.2.2 thorpej void plcom_config (struct plcom_softc *); 157 1.2.2.2 thorpej void plcom_shutdown (struct plcom_softc *); 158 1.2.2.2 thorpej int plcomspeed (long, long); 159 1.2.2.2 thorpej static u_char cflag2lcr (tcflag_t); 160 1.2.2.2 thorpej int plcomparam (struct tty *, struct termios *); 161 1.2.2.2 thorpej void plcomstart (struct tty *); 162 1.2.2.2 thorpej int plcomhwiflow (struct tty *, int); 163 1.2.2.2 thorpej 164 1.2.2.2 thorpej void plcom_loadchannelregs (struct plcom_softc *); 165 1.2.2.2 thorpej void plcom_hwiflow (struct plcom_softc *); 166 1.2.2.2 thorpej void plcom_break (struct plcom_softc *, int); 167 1.2.2.2 thorpej void plcom_modem (struct plcom_softc *, int); 168 1.2.2.2 thorpej void tiocm_to_plcom (struct plcom_softc *, u_long, int); 169 1.2.2.2 thorpej int plcom_to_tiocm (struct plcom_softc *); 170 1.2.2.2 thorpej void plcom_iflush (struct plcom_softc *); 171 1.2.2.2 thorpej 172 1.2.2.2 thorpej int plcom_common_getc (dev_t, bus_space_tag_t, bus_space_handle_t); 173 1.2.2.2 thorpej void plcom_common_putc (dev_t, bus_space_tag_t, bus_space_handle_t, int); 174 1.2.2.2 thorpej 175 1.2.2.2 thorpej int plcominit (bus_space_tag_t, bus_addr_t, int, int, tcflag_t, 176 1.2.2.2 thorpej bus_space_handle_t *); 177 1.2.2.2 thorpej 178 1.2.2.4 jdolecek dev_type_open(plcomopen); 179 1.2.2.4 jdolecek dev_type_close(plcomclose); 180 1.2.2.4 jdolecek dev_type_read(plcomread); 181 1.2.2.4 jdolecek dev_type_write(plcomwrite); 182 1.2.2.4 jdolecek dev_type_ioctl(plcomioctl); 183 1.2.2.4 jdolecek dev_type_stop(plcomstop); 184 1.2.2.4 jdolecek dev_type_tty(plcomtty); 185 1.2.2.4 jdolecek dev_type_poll(plcompoll); 186 1.2.2.2 thorpej 187 1.2.2.2 thorpej int plcomcngetc (dev_t); 188 1.2.2.2 thorpej void plcomcnputc (dev_t, int); 189 1.2.2.2 thorpej void plcomcnpollc (dev_t, int); 190 1.2.2.2 thorpej 191 1.2.2.2 thorpej #define integrate static inline 192 1.2.2.2 thorpej #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 193 1.2.2.2 thorpej void plcomsoft (void *); 194 1.2.2.2 thorpej #else 195 1.2.2.2 thorpej #ifndef __NO_SOFT_SERIAL_INTERRUPT 196 1.2.2.2 thorpej void plcomsoft (void); 197 1.2.2.2 thorpej #else 198 1.2.2.2 thorpej void plcomsoft (void *); 199 1.2.2.2 thorpej struct callout plcomsoft_callout = CALLOUT_INITIALIZER; 200 1.2.2.2 thorpej #endif 201 1.2.2.2 thorpej #endif 202 1.2.2.2 thorpej integrate void plcom_rxsoft (struct plcom_softc *, struct tty *); 203 1.2.2.2 thorpej integrate void plcom_txsoft (struct plcom_softc *, struct tty *); 204 1.2.2.2 thorpej integrate void plcom_stsoft (struct plcom_softc *, struct tty *); 205 1.2.2.2 thorpej integrate void plcom_schedrx (struct plcom_softc *); 206 1.2.2.2 thorpej void plcomdiag (void *); 207 1.2.2.2 thorpej 208 1.2.2.2 thorpej extern struct cfdriver plcom_cd; 209 1.2.2.2 thorpej 210 1.2.2.4 jdolecek const struct cdevsw plcom_cdevsw = { 211 1.2.2.4 jdolecek plcomopen, plcomclose, plcomread, plcomwrite, plcomioctl, 212 1.2.2.4 jdolecek plcomstop, plcomtty, plcompoll, nommap, ttykqfilter, D_TTY 213 1.2.2.4 jdolecek }; 214 1.2.2.4 jdolecek 215 1.2.2.2 thorpej /* 216 1.2.2.2 thorpej * Make this an option variable one can patch. 217 1.2.2.2 thorpej * But be warned: this must be a power of 2! 218 1.2.2.2 thorpej */ 219 1.2.2.2 thorpej u_int plcom_rbuf_size = PLCOM_RING_SIZE; 220 1.2.2.2 thorpej 221 1.2.2.2 thorpej /* Stop input when 3/4 of the ring is full; restart when only 1/4 is full. */ 222 1.2.2.2 thorpej u_int plcom_rbuf_hiwat = (PLCOM_RING_SIZE * 1) / 4; 223 1.2.2.2 thorpej u_int plcom_rbuf_lowat = (PLCOM_RING_SIZE * 3) / 4; 224 1.2.2.2 thorpej 225 1.2.2.2 thorpej static int plcomconsunit = -1; 226 1.2.2.2 thorpej static bus_space_tag_t plcomconstag; 227 1.2.2.2 thorpej static bus_space_handle_t plcomconsioh; 228 1.2.2.2 thorpej static int plcomconsattached; 229 1.2.2.2 thorpej static int plcomconsrate; 230 1.2.2.2 thorpej static tcflag_t plcomconscflag; 231 1.2.2.2 thorpej static struct cnm_state plcom_cnm_state; 232 1.2.2.2 thorpej 233 1.2.2.2 thorpej static int ppscap = 234 1.2.2.2 thorpej PPS_TSFMT_TSPEC | 235 1.2.2.2 thorpej PPS_CAPTUREASSERT | 236 1.2.2.2 thorpej PPS_CAPTURECLEAR | 237 1.2.2.2 thorpej #ifdef PPS_SYNC 238 1.2.2.2 thorpej PPS_HARDPPSONASSERT | PPS_HARDPPSONCLEAR | 239 1.2.2.2 thorpej #endif /* PPS_SYNC */ 240 1.2.2.2 thorpej PPS_OFFSETASSERT | PPS_OFFSETCLEAR; 241 1.2.2.2 thorpej 242 1.2.2.2 thorpej #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS 243 1.2.2.2 thorpej #ifdef __NO_SOFT_SERIAL_INTERRUPT 244 1.2.2.2 thorpej volatile int plcom_softintr_scheduled; 245 1.2.2.2 thorpej #endif 246 1.2.2.2 thorpej #endif 247 1.2.2.2 thorpej 248 1.2.2.2 thorpej #ifdef KGDB 249 1.2.2.2 thorpej #include <sys/kgdb.h> 250 1.2.2.2 thorpej 251 1.2.2.2 thorpej static int plcom_kgdb_unit; 252 1.2.2.2 thorpej static bus_space_tag_t plcom_kgdb_iot; 253 1.2.2.2 thorpej static bus_space_handle_t plcom_kgdb_ioh; 254 1.2.2.2 thorpej static int plcom_kgdb_attached; 255 1.2.2.2 thorpej 256 1.2.2.2 thorpej int plcom_kgdb_getc (void *); 257 1.2.2.2 thorpej void plcom_kgdb_putc (void *, int); 258 1.2.2.2 thorpej #endif /* KGDB */ 259 1.2.2.2 thorpej 260 1.2.2.2 thorpej #define PLCOMUNIT_MASK 0x7ffff 261 1.2.2.2 thorpej #define PLCOMDIALOUT_MASK 0x80000 262 1.2.2.2 thorpej 263 1.2.2.2 thorpej #define PLCOMUNIT(x) (minor(x) & PLCOMUNIT_MASK) 264 1.2.2.2 thorpej #define PLCOMDIALOUT(x) (minor(x) & PLCOMDIALOUT_MASK) 265 1.2.2.2 thorpej 266 1.2.2.2 thorpej #define PLCOM_ISALIVE(sc) ((sc)->enabled != 0 && \ 267 1.2.2.2 thorpej ISSET((sc)->sc_dev.dv_flags, DVF_ACTIVE)) 268 1.2.2.2 thorpej 269 1.2.2.2 thorpej #define BR BUS_SPACE_BARRIER_READ 270 1.2.2.2 thorpej #define BW BUS_SPACE_BARRIER_WRITE 271 1.2.2.2 thorpej #define PLCOM_BARRIER(t, h, f) bus_space_barrier((t), (h), 0, PLCOM_UART_SIZE, (f)) 272 1.2.2.2 thorpej 273 1.2.2.2 thorpej #if (defined(MULTIPROCESSOR) || defined(LOCKDEBUG)) && defined(PLCOM_MPLOCK) 274 1.2.2.2 thorpej 275 1.2.2.2 thorpej #define PLCOM_LOCK(sc) simple_lock(&(sc)->sc_lock) 276 1.2.2.2 thorpej #define PLCOM_UNLOCK(sc) simple_unlock(&(sc)->sc_lock) 277 1.2.2.2 thorpej 278 1.2.2.2 thorpej #else 279 1.2.2.2 thorpej 280 1.2.2.2 thorpej #define PLCOM_LOCK(sc) 281 1.2.2.2 thorpej #define PLCOM_UNLOCK(sc) 282 1.2.2.2 thorpej 283 1.2.2.2 thorpej #endif 284 1.2.2.2 thorpej 285 1.2.2.2 thorpej int 286 1.2.2.2 thorpej plcomspeed(long speed, long frequency) 287 1.2.2.2 thorpej { 288 1.2.2.2 thorpej #define divrnd(n, q) (((n)*2/(q)+1)/2) /* divide and round off */ 289 1.2.2.2 thorpej 290 1.2.2.2 thorpej int x, err; 291 1.2.2.2 thorpej 292 1.2.2.2 thorpej #if 0 293 1.2.2.2 thorpej if (speed == 0) 294 1.2.2.2 thorpej return 0; 295 1.2.2.2 thorpej #endif 296 1.2.2.2 thorpej if (speed <= 0) 297 1.2.2.2 thorpej return -1; 298 1.2.2.2 thorpej x = divrnd(frequency / 16, speed); 299 1.2.2.2 thorpej if (x <= 0) 300 1.2.2.2 thorpej return -1; 301 1.2.2.2 thorpej err = divrnd(((quad_t)frequency) * 1000 / 16, speed * x) - 1000; 302 1.2.2.2 thorpej if (err < 0) 303 1.2.2.2 thorpej err = -err; 304 1.2.2.2 thorpej if (err > PLCOM_TOLERANCE) 305 1.2.2.2 thorpej return -1; 306 1.2.2.2 thorpej return x; 307 1.2.2.2 thorpej 308 1.2.2.2 thorpej #undef divrnd 309 1.2.2.2 thorpej } 310 1.2.2.2 thorpej 311 1.2.2.2 thorpej #ifdef PLCOM_DEBUG 312 1.2.2.2 thorpej int plcom_debug = 0; 313 1.2.2.2 thorpej 314 1.2.2.2 thorpej void plcomstatus (struct plcom_softc *, char *); 315 1.2.2.2 thorpej void 316 1.2.2.2 thorpej plcomstatus(struct plcom_softc *sc, char *str) 317 1.2.2.2 thorpej { 318 1.2.2.2 thorpej struct tty *tp = sc->sc_tty; 319 1.2.2.2 thorpej 320 1.2.2.2 thorpej printf("%s: %s %sclocal %sdcd %sts_carr_on %sdtr %stx_stopped\n", 321 1.2.2.2 thorpej sc->sc_dev.dv_xname, str, 322 1.2.2.2 thorpej ISSET(tp->t_cflag, CLOCAL) ? "+" : "-", 323 1.2.2.2 thorpej ISSET(sc->sc_msr, MSR_DCD) ? "+" : "-", 324 1.2.2.2 thorpej ISSET(tp->t_state, TS_CARR_ON) ? "+" : "-", 325 1.2.2.2 thorpej ISSET(sc->sc_mcr, MCR_DTR) ? "+" : "-", 326 1.2.2.2 thorpej sc->sc_tx_stopped ? "+" : "-"); 327 1.2.2.2 thorpej 328 1.2.2.2 thorpej printf("%s: %s %scrtscts %scts %sts_ttstop %srts %xrx_flags\n", 329 1.2.2.2 thorpej sc->sc_dev.dv_xname, str, 330 1.2.2.2 thorpej ISSET(tp->t_cflag, CRTSCTS) ? "+" : "-", 331 1.2.2.2 thorpej ISSET(sc->sc_msr, MSR_CTS) ? "+" : "-", 332 1.2.2.2 thorpej ISSET(tp->t_state, TS_TTSTOP) ? "+" : "-", 333 1.2.2.2 thorpej ISSET(sc->sc_mcr, MCR_RTS) ? "+" : "-", 334 1.2.2.2 thorpej sc->sc_rx_flags); 335 1.2.2.2 thorpej } 336 1.2.2.2 thorpej #endif 337 1.2.2.2 thorpej 338 1.2.2.2 thorpej int 339 1.2.2.2 thorpej plcomprobe1(bus_space_tag_t iot, bus_space_handle_t ioh) 340 1.2.2.2 thorpej { 341 1.2.2.2 thorpej int data; 342 1.2.2.2 thorpej 343 1.2.2.2 thorpej /* Disable the UART. */ 344 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, 0); 345 1.2.2.2 thorpej /* Make sure the FIFO is off. */ 346 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_lcr, LCR_8BITS); 347 1.2.2.2 thorpej /* Disable interrupts. */ 348 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_iir, 0); 349 1.2.2.2 thorpej 350 1.2.2.2 thorpej /* Make sure we swallow anything in the receiving register. */ 351 1.2.2.2 thorpej data = bus_space_read_1(iot, ioh, plcom_dr); 352 1.2.2.2 thorpej 353 1.2.2.2 thorpej if (bus_space_read_1(iot, ioh, plcom_lcr) != LCR_8BITS) 354 1.2.2.2 thorpej return 0; 355 1.2.2.2 thorpej 356 1.2.2.2 thorpej data = bus_space_read_1(iot, ioh, plcom_fr) & (FR_RXFF | FR_RXFE); 357 1.2.2.2 thorpej 358 1.2.2.2 thorpej if (data != FR_RXFE) 359 1.2.2.2 thorpej return 0; 360 1.2.2.2 thorpej 361 1.2.2.2 thorpej return 1; 362 1.2.2.2 thorpej } 363 1.2.2.2 thorpej 364 1.2.2.2 thorpej static void 365 1.2.2.2 thorpej plcom_enable_debugport(struct plcom_softc *sc) 366 1.2.2.2 thorpej { 367 1.2.2.2 thorpej int s; 368 1.2.2.2 thorpej 369 1.2.2.2 thorpej /* Turn on line break interrupt, set carrier. */ 370 1.2.2.2 thorpej s = splserial(); 371 1.2.2.2 thorpej PLCOM_LOCK(sc); 372 1.2.2.2 thorpej sc->sc_cr = CR_RIE | CR_RTIE | CR_UARTEN; 373 1.2.2.2 thorpej bus_space_write_1(sc->sc_iot, sc->sc_ioh, plcom_cr, sc->sc_cr); 374 1.2.2.2 thorpej SET(sc->sc_mcr, MCR_DTR | MCR_RTS); 375 1.2.2.2 thorpej sc->sc_set_mcr(sc->sc_set_mcr_arg, sc->sc_dev.dv_unit, sc->sc_mcr); 376 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 377 1.2.2.2 thorpej splx(s); 378 1.2.2.2 thorpej } 379 1.2.2.2 thorpej 380 1.2.2.2 thorpej void 381 1.2.2.2 thorpej plcom_attach_subr(struct plcom_softc *sc) 382 1.2.2.2 thorpej { 383 1.2.2.2 thorpej int unit = sc->sc_iounit; 384 1.2.2.2 thorpej bus_space_tag_t iot = sc->sc_iot; 385 1.2.2.2 thorpej bus_space_handle_t ioh = sc->sc_ioh; 386 1.2.2.2 thorpej struct tty *tp; 387 1.2.2.2 thorpej 388 1.2.2.2 thorpej callout_init(&sc->sc_diag_callout); 389 1.2.2.2 thorpej #if (defined(MULTIPROCESSOR) || defined(LOCKDEBUG)) && defined(PLCOM_MPLOCK) 390 1.2.2.2 thorpej simple_lock_init(&sc->sc_lock); 391 1.2.2.2 thorpej #endif 392 1.2.2.2 thorpej 393 1.2.2.2 thorpej /* Disable interrupts before configuring the device. */ 394 1.2.2.2 thorpej sc->sc_cr = 0; 395 1.2.2.2 thorpej 396 1.2.2.2 thorpej if (plcomconstag && unit == plcomconsunit) { 397 1.2.2.2 thorpej plcomconsattached = 1; 398 1.2.2.2 thorpej 399 1.2.2.2 thorpej plcomconstag = iot; 400 1.2.2.2 thorpej plcomconsioh = ioh; 401 1.2.2.2 thorpej 402 1.2.2.2 thorpej /* Make sure the console is always "hardwired". */ 403 1.2.2.2 thorpej delay(1000); /* wait for output to finish */ 404 1.2.2.2 thorpej SET(sc->sc_hwflags, PLCOM_HW_CONSOLE); 405 1.2.2.2 thorpej SET(sc->sc_swflags, TIOCFLAG_SOFTCAR); 406 1.2.2.2 thorpej /* Must re-enable the console immediately, or we will 407 1.2.2.2 thorpej hang when trying to print. */ 408 1.2.2.2 thorpej sc->sc_cr = CR_UARTEN; 409 1.2.2.2 thorpej } 410 1.2.2.2 thorpej 411 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, sc->sc_cr); 412 1.2.2.2 thorpej 413 1.2.2.2 thorpej /* The PL010 has a 16-byte fifo, but the tx interrupt triggers when 414 1.2.2.2 thorpej there is space for 8 more bytes. */ 415 1.2.2.2 thorpej sc->sc_fifolen = 8; 416 1.2.2.2 thorpej printf("\n"); 417 1.2.2.2 thorpej 418 1.2.2.2 thorpej if (ISSET(sc->sc_hwflags, PLCOM_HW_TXFIFO_DISABLE)) { 419 1.2.2.2 thorpej sc->sc_fifolen = 1; 420 1.2.2.2 thorpej printf("%s: txfifo disabled\n", sc->sc_dev.dv_xname); 421 1.2.2.2 thorpej } 422 1.2.2.2 thorpej 423 1.2.2.2 thorpej if (sc->sc_fifolen > 1) 424 1.2.2.2 thorpej SET(sc->sc_hwflags, PLCOM_HW_FIFO); 425 1.2.2.2 thorpej 426 1.2.2.2 thorpej tp = ttymalloc(); 427 1.2.2.2 thorpej tp->t_oproc = plcomstart; 428 1.2.2.2 thorpej tp->t_param = plcomparam; 429 1.2.2.2 thorpej tp->t_hwiflow = plcomhwiflow; 430 1.2.2.2 thorpej 431 1.2.2.2 thorpej sc->sc_tty = tp; 432 1.2.2.2 thorpej sc->sc_rbuf = malloc(plcom_rbuf_size << 1, M_DEVBUF, M_NOWAIT); 433 1.2.2.2 thorpej sc->sc_rbput = sc->sc_rbget = sc->sc_rbuf; 434 1.2.2.2 thorpej sc->sc_rbavail = plcom_rbuf_size; 435 1.2.2.2 thorpej if (sc->sc_rbuf == NULL) { 436 1.2.2.2 thorpej printf("%s: unable to allocate ring buffer\n", 437 1.2.2.2 thorpej sc->sc_dev.dv_xname); 438 1.2.2.2 thorpej return; 439 1.2.2.2 thorpej } 440 1.2.2.2 thorpej sc->sc_ebuf = sc->sc_rbuf + (plcom_rbuf_size << 1); 441 1.2.2.2 thorpej 442 1.2.2.2 thorpej tty_attach(tp); 443 1.2.2.2 thorpej 444 1.2.2.2 thorpej if (ISSET(sc->sc_hwflags, PLCOM_HW_CONSOLE)) { 445 1.2.2.2 thorpej int maj; 446 1.2.2.2 thorpej 447 1.2.2.2 thorpej /* locate the major number */ 448 1.2.2.4 jdolecek maj = cdevsw_lookup_major(&plcom_cdevsw); 449 1.2.2.2 thorpej 450 1.2.2.2 thorpej cn_tab->cn_dev = makedev(maj, sc->sc_dev.dv_unit); 451 1.2.2.2 thorpej 452 1.2.2.2 thorpej printf("%s: console\n", sc->sc_dev.dv_xname); 453 1.2.2.2 thorpej } 454 1.2.2.2 thorpej 455 1.2.2.2 thorpej #ifdef KGDB 456 1.2.2.2 thorpej /* 457 1.2.2.2 thorpej * Allow kgdb to "take over" this port. If this is 458 1.2.2.2 thorpej * the kgdb device, it has exclusive use. 459 1.2.2.2 thorpej */ 460 1.2.2.2 thorpej if (iot == plcom_kgdb_iot && unit == plcom_kgdb_unit) { 461 1.2.2.2 thorpej plcom_kgdb_attached = 1; 462 1.2.2.2 thorpej 463 1.2.2.2 thorpej SET(sc->sc_hwflags, PLCOM_HW_KGDB); 464 1.2.2.2 thorpej printf("%s: kgdb\n", sc->sc_dev.dv_xname); 465 1.2.2.2 thorpej } 466 1.2.2.2 thorpej #endif 467 1.2.2.2 thorpej 468 1.2.2.2 thorpej #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 469 1.2.2.2 thorpej sc->sc_si = softintr_establish(IPL_SOFTSERIAL, plcomsoft, sc); 470 1.2.2.2 thorpej #endif 471 1.2.2.2 thorpej 472 1.2.2.2 thorpej #if NRND > 0 && defined(RND_COM) 473 1.2.2.2 thorpej rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 474 1.2.2.2 thorpej RND_TYPE_TTY, 0); 475 1.2.2.2 thorpej #endif 476 1.2.2.2 thorpej 477 1.2.2.2 thorpej /* if there are no enable/disable functions, assume the device 478 1.2.2.2 thorpej is always enabled */ 479 1.2.2.2 thorpej if (!sc->enable) 480 1.2.2.2 thorpej sc->enabled = 1; 481 1.2.2.2 thorpej 482 1.2.2.2 thorpej plcom_config(sc); 483 1.2.2.2 thorpej 484 1.2.2.2 thorpej SET(sc->sc_hwflags, PLCOM_HW_DEV_OK); 485 1.2.2.2 thorpej } 486 1.2.2.2 thorpej 487 1.2.2.2 thorpej void 488 1.2.2.2 thorpej plcom_config(struct plcom_softc *sc) 489 1.2.2.2 thorpej { 490 1.2.2.2 thorpej bus_space_tag_t iot = sc->sc_iot; 491 1.2.2.2 thorpej bus_space_handle_t ioh = sc->sc_ioh; 492 1.2.2.2 thorpej 493 1.2.2.2 thorpej /* Disable interrupts before configuring the device. */ 494 1.2.2.2 thorpej sc->sc_cr = 0; 495 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, sc->sc_cr); 496 1.2.2.2 thorpej 497 1.2.2.2 thorpej if (ISSET(sc->sc_hwflags, PLCOM_HW_CONSOLE|PLCOM_HW_KGDB)) 498 1.2.2.2 thorpej plcom_enable_debugport(sc); 499 1.2.2.2 thorpej } 500 1.2.2.2 thorpej 501 1.2.2.2 thorpej int 502 1.2.2.2 thorpej plcom_detach(self, flags) 503 1.2.2.2 thorpej struct device *self; 504 1.2.2.2 thorpej int flags; 505 1.2.2.2 thorpej { 506 1.2.2.2 thorpej struct plcom_softc *sc = (struct plcom_softc *)self; 507 1.2.2.2 thorpej int maj, mn; 508 1.2.2.2 thorpej 509 1.2.2.2 thorpej /* locate the major number */ 510 1.2.2.4 jdolecek maj = cdevsw_lookup_major(&plcom_cdevsw); 511 1.2.2.2 thorpej 512 1.2.2.2 thorpej /* Nuke the vnodes for any open instances. */ 513 1.2.2.2 thorpej mn = self->dv_unit; 514 1.2.2.2 thorpej vdevgone(maj, mn, mn, VCHR); 515 1.2.2.2 thorpej 516 1.2.2.2 thorpej mn |= PLCOMDIALOUT_MASK; 517 1.2.2.2 thorpej vdevgone(maj, mn, mn, VCHR); 518 1.2.2.2 thorpej 519 1.2.2.2 thorpej /* Free the receive buffer. */ 520 1.2.2.2 thorpej free(sc->sc_rbuf, M_DEVBUF); 521 1.2.2.2 thorpej 522 1.2.2.2 thorpej /* Detach and free the tty. */ 523 1.2.2.2 thorpej tty_detach(sc->sc_tty); 524 1.2.2.2 thorpej ttyfree(sc->sc_tty); 525 1.2.2.2 thorpej 526 1.2.2.2 thorpej #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 527 1.2.2.2 thorpej /* Unhook the soft interrupt handler. */ 528 1.2.2.2 thorpej softintr_disestablish(sc->sc_si); 529 1.2.2.2 thorpej #endif 530 1.2.2.2 thorpej 531 1.2.2.2 thorpej #if NRND > 0 && defined(RND_COM) 532 1.2.2.2 thorpej /* Unhook the entropy source. */ 533 1.2.2.2 thorpej rnd_detach_source(&sc->rnd_source); 534 1.2.2.2 thorpej #endif 535 1.2.2.2 thorpej 536 1.2.2.2 thorpej return 0; 537 1.2.2.2 thorpej } 538 1.2.2.2 thorpej 539 1.2.2.2 thorpej int 540 1.2.2.2 thorpej plcom_activate(struct device *self, enum devact act) 541 1.2.2.2 thorpej { 542 1.2.2.2 thorpej struct plcom_softc *sc = (struct plcom_softc *)self; 543 1.2.2.2 thorpej int s, rv = 0; 544 1.2.2.2 thorpej 545 1.2.2.2 thorpej s = splserial(); 546 1.2.2.2 thorpej PLCOM_LOCK(sc); 547 1.2.2.2 thorpej switch (act) { 548 1.2.2.2 thorpej case DVACT_ACTIVATE: 549 1.2.2.2 thorpej rv = EOPNOTSUPP; 550 1.2.2.2 thorpej break; 551 1.2.2.2 thorpej 552 1.2.2.2 thorpej case DVACT_DEACTIVATE: 553 1.2.2.2 thorpej if (sc->sc_hwflags & (PLCOM_HW_CONSOLE|PLCOM_HW_KGDB)) { 554 1.2.2.2 thorpej rv = EBUSY; 555 1.2.2.2 thorpej break; 556 1.2.2.2 thorpej } 557 1.2.2.2 thorpej 558 1.2.2.2 thorpej if (sc->disable != NULL && sc->enabled != 0) { 559 1.2.2.2 thorpej (*sc->disable)(sc); 560 1.2.2.2 thorpej sc->enabled = 0; 561 1.2.2.2 thorpej } 562 1.2.2.2 thorpej break; 563 1.2.2.2 thorpej } 564 1.2.2.2 thorpej 565 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 566 1.2.2.2 thorpej splx(s); 567 1.2.2.2 thorpej return rv; 568 1.2.2.2 thorpej } 569 1.2.2.2 thorpej 570 1.2.2.2 thorpej void 571 1.2.2.2 thorpej plcom_shutdown(struct plcom_softc *sc) 572 1.2.2.2 thorpej { 573 1.2.2.2 thorpej struct tty *tp = sc->sc_tty; 574 1.2.2.2 thorpej int s; 575 1.2.2.2 thorpej 576 1.2.2.2 thorpej s = splserial(); 577 1.2.2.2 thorpej PLCOM_LOCK(sc); 578 1.2.2.2 thorpej 579 1.2.2.2 thorpej /* If we were asserting flow control, then deassert it. */ 580 1.2.2.2 thorpej SET(sc->sc_rx_flags, RX_IBUF_BLOCKED); 581 1.2.2.2 thorpej plcom_hwiflow(sc); 582 1.2.2.2 thorpej 583 1.2.2.2 thorpej /* Clear any break condition set with TIOCSBRK. */ 584 1.2.2.2 thorpej plcom_break(sc, 0); 585 1.2.2.2 thorpej 586 1.2.2.2 thorpej /* Turn off PPS capture on last close. */ 587 1.2.2.2 thorpej sc->sc_ppsmask = 0; 588 1.2.2.2 thorpej sc->ppsparam.mode = 0; 589 1.2.2.2 thorpej 590 1.2.2.2 thorpej /* 591 1.2.2.2 thorpej * Hang up if necessary. Wait a bit, so the other side has time to 592 1.2.2.2 thorpej * notice even if we immediately open the port again. 593 1.2.2.2 thorpej * Avoid tsleeping above splhigh(). 594 1.2.2.2 thorpej */ 595 1.2.2.2 thorpej if (ISSET(tp->t_cflag, HUPCL)) { 596 1.2.2.2 thorpej plcom_modem(sc, 0); 597 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 598 1.2.2.2 thorpej splx(s); 599 1.2.2.2 thorpej /* XXX tsleep will only timeout */ 600 1.2.2.2 thorpej (void) tsleep(sc, TTIPRI, ttclos, hz); 601 1.2.2.2 thorpej s = splserial(); 602 1.2.2.2 thorpej PLCOM_LOCK(sc); 603 1.2.2.2 thorpej } 604 1.2.2.2 thorpej 605 1.2.2.2 thorpej /* Turn off interrupts. */ 606 1.2.2.2 thorpej if (ISSET(sc->sc_hwflags, PLCOM_HW_CONSOLE)) 607 1.2.2.2 thorpej /* interrupt on break */ 608 1.2.2.2 thorpej sc->sc_cr = CR_RIE | CR_RTIE | CR_UARTEN; 609 1.2.2.2 thorpej else 610 1.2.2.2 thorpej sc->sc_cr = 0; 611 1.2.2.2 thorpej bus_space_write_1(sc->sc_iot, sc->sc_ioh, plcom_cr, sc->sc_cr); 612 1.2.2.2 thorpej 613 1.2.2.2 thorpej if (sc->disable) { 614 1.2.2.2 thorpej #ifdef DIAGNOSTIC 615 1.2.2.2 thorpej if (!sc->enabled) 616 1.2.2.2 thorpej panic("plcom_shutdown: not enabled?"); 617 1.2.2.2 thorpej #endif 618 1.2.2.2 thorpej (*sc->disable)(sc); 619 1.2.2.2 thorpej sc->enabled = 0; 620 1.2.2.2 thorpej } 621 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 622 1.2.2.2 thorpej splx(s); 623 1.2.2.2 thorpej } 624 1.2.2.2 thorpej 625 1.2.2.2 thorpej int 626 1.2.2.2 thorpej plcomopen(dev_t dev, int flag, int mode, struct proc *p) 627 1.2.2.2 thorpej { 628 1.2.2.2 thorpej struct plcom_softc *sc; 629 1.2.2.2 thorpej struct tty *tp; 630 1.2.2.2 thorpej int s, s2; 631 1.2.2.2 thorpej int error; 632 1.2.2.2 thorpej 633 1.2.2.2 thorpej sc = device_lookup(&plcom_cd, PLCOMUNIT(dev)); 634 1.2.2.2 thorpej if (sc == NULL || !ISSET(sc->sc_hwflags, PLCOM_HW_DEV_OK) || 635 1.2.2.2 thorpej sc->sc_rbuf == NULL) 636 1.2.2.2 thorpej return ENXIO; 637 1.2.2.2 thorpej 638 1.2.2.2 thorpej if (ISSET(sc->sc_dev.dv_flags, DVF_ACTIVE) == 0) 639 1.2.2.2 thorpej return ENXIO; 640 1.2.2.2 thorpej 641 1.2.2.2 thorpej #ifdef KGDB 642 1.2.2.2 thorpej /* 643 1.2.2.2 thorpej * If this is the kgdb port, no other use is permitted. 644 1.2.2.2 thorpej */ 645 1.2.2.2 thorpej if (ISSET(sc->sc_hwflags, PLCOM_HW_KGDB)) 646 1.2.2.2 thorpej return EBUSY; 647 1.2.2.2 thorpej #endif 648 1.2.2.2 thorpej 649 1.2.2.2 thorpej tp = sc->sc_tty; 650 1.2.2.2 thorpej 651 1.2.2.2 thorpej if (ISSET(tp->t_state, TS_ISOPEN) && 652 1.2.2.2 thorpej ISSET(tp->t_state, TS_XCLUDE) && 653 1.2.2.2 thorpej p->p_ucred->cr_uid != 0) 654 1.2.2.2 thorpej return EBUSY; 655 1.2.2.2 thorpej 656 1.2.2.2 thorpej s = spltty(); 657 1.2.2.2 thorpej 658 1.2.2.2 thorpej /* 659 1.2.2.2 thorpej * Do the following iff this is a first open. 660 1.2.2.2 thorpej */ 661 1.2.2.2 thorpej if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 662 1.2.2.2 thorpej struct termios t; 663 1.2.2.2 thorpej 664 1.2.2.2 thorpej tp->t_dev = dev; 665 1.2.2.2 thorpej 666 1.2.2.2 thorpej s2 = splserial(); 667 1.2.2.2 thorpej PLCOM_LOCK(sc); 668 1.2.2.2 thorpej 669 1.2.2.2 thorpej if (sc->enable) { 670 1.2.2.2 thorpej if ((*sc->enable)(sc)) { 671 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 672 1.2.2.2 thorpej splx(s2); 673 1.2.2.2 thorpej splx(s); 674 1.2.2.2 thorpej printf("%s: device enable failed\n", 675 1.2.2.2 thorpej sc->sc_dev.dv_xname); 676 1.2.2.2 thorpej return EIO; 677 1.2.2.2 thorpej } 678 1.2.2.2 thorpej sc->enabled = 1; 679 1.2.2.2 thorpej plcom_config(sc); 680 1.2.2.2 thorpej } 681 1.2.2.2 thorpej 682 1.2.2.2 thorpej /* Turn on interrupts. */ 683 1.2.2.2 thorpej /* IER_ERXRDY | IER_ERLS | IER_EMSC; */ 684 1.2.2.2 thorpej sc->sc_cr = CR_RIE | CR_RTIE | CR_MSIE | CR_UARTEN; 685 1.2.2.2 thorpej bus_space_write_1(sc->sc_iot, sc->sc_ioh, plcom_cr, sc->sc_cr); 686 1.2.2.2 thorpej 687 1.2.2.2 thorpej /* Fetch the current modem control status, needed later. */ 688 1.2.2.2 thorpej sc->sc_msr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, plcom_fr); 689 1.2.2.2 thorpej 690 1.2.2.2 thorpej /* Clear PPS capture state on first open. */ 691 1.2.2.2 thorpej sc->sc_ppsmask = 0; 692 1.2.2.2 thorpej sc->ppsparam.mode = 0; 693 1.2.2.2 thorpej 694 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 695 1.2.2.2 thorpej splx(s2); 696 1.2.2.2 thorpej 697 1.2.2.2 thorpej /* 698 1.2.2.2 thorpej * Initialize the termios status to the defaults. Add in the 699 1.2.2.2 thorpej * sticky bits from TIOCSFLAGS. 700 1.2.2.2 thorpej */ 701 1.2.2.2 thorpej t.c_ispeed = 0; 702 1.2.2.2 thorpej if (ISSET(sc->sc_hwflags, PLCOM_HW_CONSOLE)) { 703 1.2.2.2 thorpej t.c_ospeed = plcomconsrate; 704 1.2.2.2 thorpej t.c_cflag = plcomconscflag; 705 1.2.2.2 thorpej } else { 706 1.2.2.2 thorpej t.c_ospeed = TTYDEF_SPEED; 707 1.2.2.2 thorpej t.c_cflag = TTYDEF_CFLAG; 708 1.2.2.2 thorpej } 709 1.2.2.2 thorpej if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL)) 710 1.2.2.2 thorpej SET(t.c_cflag, CLOCAL); 711 1.2.2.2 thorpej if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS)) 712 1.2.2.2 thorpej SET(t.c_cflag, CRTSCTS); 713 1.2.2.2 thorpej if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF)) 714 1.2.2.2 thorpej SET(t.c_cflag, MDMBUF); 715 1.2.2.2 thorpej /* Make sure plcomparam() will do something. */ 716 1.2.2.2 thorpej tp->t_ospeed = 0; 717 1.2.2.2 thorpej (void) plcomparam(tp, &t); 718 1.2.2.2 thorpej tp->t_iflag = TTYDEF_IFLAG; 719 1.2.2.2 thorpej tp->t_oflag = TTYDEF_OFLAG; 720 1.2.2.2 thorpej tp->t_lflag = TTYDEF_LFLAG; 721 1.2.2.2 thorpej ttychars(tp); 722 1.2.2.2 thorpej ttsetwater(tp); 723 1.2.2.2 thorpej 724 1.2.2.2 thorpej s2 = splserial(); 725 1.2.2.2 thorpej PLCOM_LOCK(sc); 726 1.2.2.2 thorpej 727 1.2.2.2 thorpej /* 728 1.2.2.2 thorpej * Turn on DTR. We must always do this, even if carrier is not 729 1.2.2.2 thorpej * present, because otherwise we'd have to use TIOCSDTR 730 1.2.2.2 thorpej * immediately after setting CLOCAL, which applications do not 731 1.2.2.2 thorpej * expect. We always assert DTR while the device is open 732 1.2.2.2 thorpej * unless explicitly requested to deassert it. 733 1.2.2.2 thorpej */ 734 1.2.2.2 thorpej plcom_modem(sc, 1); 735 1.2.2.2 thorpej 736 1.2.2.2 thorpej /* Clear the input ring, and unblock. */ 737 1.2.2.2 thorpej sc->sc_rbput = sc->sc_rbget = sc->sc_rbuf; 738 1.2.2.2 thorpej sc->sc_rbavail = plcom_rbuf_size; 739 1.2.2.2 thorpej plcom_iflush(sc); 740 1.2.2.2 thorpej CLR(sc->sc_rx_flags, RX_ANY_BLOCK); 741 1.2.2.2 thorpej plcom_hwiflow(sc); 742 1.2.2.2 thorpej 743 1.2.2.2 thorpej #ifdef PLCOM_DEBUG 744 1.2.2.2 thorpej if (plcom_debug) 745 1.2.2.2 thorpej plcomstatus(sc, "plcomopen "); 746 1.2.2.2 thorpej #endif 747 1.2.2.2 thorpej 748 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 749 1.2.2.2 thorpej splx(s2); 750 1.2.2.2 thorpej } 751 1.2.2.2 thorpej 752 1.2.2.2 thorpej splx(s); 753 1.2.2.2 thorpej 754 1.2.2.2 thorpej error = ttyopen(tp, PLCOMDIALOUT(dev), ISSET(flag, O_NONBLOCK)); 755 1.2.2.2 thorpej if (error) 756 1.2.2.2 thorpej goto bad; 757 1.2.2.2 thorpej 758 1.2.2.2 thorpej error = (*tp->t_linesw->l_open)(dev, tp); 759 1.2.2.2 thorpej if (error) 760 1.2.2.2 thorpej goto bad; 761 1.2.2.2 thorpej 762 1.2.2.2 thorpej return 0; 763 1.2.2.2 thorpej 764 1.2.2.2 thorpej bad: 765 1.2.2.2 thorpej if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 766 1.2.2.2 thorpej /* 767 1.2.2.2 thorpej * We failed to open the device, and nobody else had it opened. 768 1.2.2.2 thorpej * Clean up the state as appropriate. 769 1.2.2.2 thorpej */ 770 1.2.2.2 thorpej plcom_shutdown(sc); 771 1.2.2.2 thorpej } 772 1.2.2.2 thorpej 773 1.2.2.2 thorpej return error; 774 1.2.2.2 thorpej } 775 1.2.2.2 thorpej 776 1.2.2.2 thorpej int 777 1.2.2.2 thorpej plcomclose(dev_t dev, int flag, int mode, struct proc *p) 778 1.2.2.2 thorpej { 779 1.2.2.2 thorpej struct plcom_softc *sc = device_lookup(&plcom_cd, PLCOMUNIT(dev)); 780 1.2.2.2 thorpej struct tty *tp = sc->sc_tty; 781 1.2.2.2 thorpej 782 1.2.2.2 thorpej /* XXX This is for cons.c. */ 783 1.2.2.2 thorpej if (!ISSET(tp->t_state, TS_ISOPEN)) 784 1.2.2.2 thorpej return 0; 785 1.2.2.2 thorpej 786 1.2.2.2 thorpej (*tp->t_linesw->l_close)(tp, flag); 787 1.2.2.2 thorpej ttyclose(tp); 788 1.2.2.2 thorpej 789 1.2.2.2 thorpej if (PLCOM_ISALIVE(sc) == 0) 790 1.2.2.2 thorpej return 0; 791 1.2.2.2 thorpej 792 1.2.2.2 thorpej if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 793 1.2.2.2 thorpej /* 794 1.2.2.2 thorpej * Although we got a last close, the device may still be in 795 1.2.2.2 thorpej * use; e.g. if this was the dialout node, and there are still 796 1.2.2.2 thorpej * processes waiting for carrier on the non-dialout node. 797 1.2.2.2 thorpej */ 798 1.2.2.2 thorpej plcom_shutdown(sc); 799 1.2.2.2 thorpej } 800 1.2.2.2 thorpej 801 1.2.2.2 thorpej return 0; 802 1.2.2.2 thorpej } 803 1.2.2.2 thorpej 804 1.2.2.2 thorpej int 805 1.2.2.2 thorpej plcomread(dev_t dev, struct uio *uio, int flag) 806 1.2.2.2 thorpej { 807 1.2.2.2 thorpej struct plcom_softc *sc = device_lookup(&plcom_cd, PLCOMUNIT(dev)); 808 1.2.2.2 thorpej struct tty *tp = sc->sc_tty; 809 1.2.2.2 thorpej 810 1.2.2.2 thorpej if (PLCOM_ISALIVE(sc) == 0) 811 1.2.2.2 thorpej return EIO; 812 1.2.2.2 thorpej 813 1.2.2.2 thorpej return (*tp->t_linesw->l_read)(tp, uio, flag); 814 1.2.2.2 thorpej } 815 1.2.2.2 thorpej 816 1.2.2.2 thorpej int 817 1.2.2.2 thorpej plcomwrite(dev_t dev, struct uio *uio, int flag) 818 1.2.2.2 thorpej { 819 1.2.2.2 thorpej struct plcom_softc *sc = device_lookup(&plcom_cd, PLCOMUNIT(dev)); 820 1.2.2.2 thorpej struct tty *tp = sc->sc_tty; 821 1.2.2.2 thorpej 822 1.2.2.2 thorpej if (PLCOM_ISALIVE(sc) == 0) 823 1.2.2.2 thorpej return EIO; 824 1.2.2.2 thorpej 825 1.2.2.2 thorpej return (*tp->t_linesw->l_write)(tp, uio, flag); 826 1.2.2.2 thorpej } 827 1.2.2.2 thorpej 828 1.2.2.2 thorpej int 829 1.2.2.2 thorpej plcompoll(dev_t dev, int events, struct proc *p) 830 1.2.2.2 thorpej { 831 1.2.2.2 thorpej struct plcom_softc *sc = device_lookup(&plcom_cd, PLCOMUNIT(dev)); 832 1.2.2.2 thorpej struct tty *tp = sc->sc_tty; 833 1.2.2.2 thorpej 834 1.2.2.2 thorpej if (PLCOM_ISALIVE(sc) == 0) 835 1.2.2.2 thorpej return EIO; 836 1.2.2.2 thorpej 837 1.2.2.2 thorpej return (*tp->t_linesw->l_poll)(tp, events, p); 838 1.2.2.2 thorpej } 839 1.2.2.2 thorpej 840 1.2.2.2 thorpej struct tty * 841 1.2.2.2 thorpej plcomtty(dev_t dev) 842 1.2.2.2 thorpej { 843 1.2.2.2 thorpej struct plcom_softc *sc = device_lookup(&plcom_cd, PLCOMUNIT(dev)); 844 1.2.2.2 thorpej struct tty *tp = sc->sc_tty; 845 1.2.2.2 thorpej 846 1.2.2.2 thorpej return tp; 847 1.2.2.2 thorpej } 848 1.2.2.2 thorpej 849 1.2.2.2 thorpej int 850 1.2.2.2 thorpej plcomioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 851 1.2.2.2 thorpej { 852 1.2.2.2 thorpej struct plcom_softc *sc = device_lookup(&plcom_cd, PLCOMUNIT(dev)); 853 1.2.2.2 thorpej struct tty *tp = sc->sc_tty; 854 1.2.2.2 thorpej int error; 855 1.2.2.2 thorpej int s; 856 1.2.2.2 thorpej 857 1.2.2.2 thorpej if (PLCOM_ISALIVE(sc) == 0) 858 1.2.2.2 thorpej return EIO; 859 1.2.2.2 thorpej 860 1.2.2.2 thorpej error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, p); 861 1.2.2.3 jdolecek if (error != EPASSTHROUGH) 862 1.2.2.2 thorpej return error; 863 1.2.2.2 thorpej 864 1.2.2.2 thorpej error = ttioctl(tp, cmd, data, flag, p); 865 1.2.2.3 jdolecek if (error != EPASSTHROUGH) 866 1.2.2.2 thorpej return error; 867 1.2.2.2 thorpej 868 1.2.2.2 thorpej error = 0; 869 1.2.2.2 thorpej 870 1.2.2.2 thorpej s = splserial(); 871 1.2.2.2 thorpej PLCOM_LOCK(sc); 872 1.2.2.2 thorpej 873 1.2.2.2 thorpej switch (cmd) { 874 1.2.2.2 thorpej case TIOCSBRK: 875 1.2.2.2 thorpej plcom_break(sc, 1); 876 1.2.2.2 thorpej break; 877 1.2.2.2 thorpej 878 1.2.2.2 thorpej case TIOCCBRK: 879 1.2.2.2 thorpej plcom_break(sc, 0); 880 1.2.2.2 thorpej break; 881 1.2.2.2 thorpej 882 1.2.2.2 thorpej case TIOCSDTR: 883 1.2.2.2 thorpej plcom_modem(sc, 1); 884 1.2.2.2 thorpej break; 885 1.2.2.2 thorpej 886 1.2.2.2 thorpej case TIOCCDTR: 887 1.2.2.2 thorpej plcom_modem(sc, 0); 888 1.2.2.2 thorpej break; 889 1.2.2.2 thorpej 890 1.2.2.2 thorpej case TIOCGFLAGS: 891 1.2.2.2 thorpej *(int *)data = sc->sc_swflags; 892 1.2.2.2 thorpej break; 893 1.2.2.2 thorpej 894 1.2.2.2 thorpej case TIOCSFLAGS: 895 1.2.2.2 thorpej error = suser(p->p_ucred, &p->p_acflag); 896 1.2.2.2 thorpej if (error) 897 1.2.2.2 thorpej break; 898 1.2.2.2 thorpej sc->sc_swflags = *(int *)data; 899 1.2.2.2 thorpej break; 900 1.2.2.2 thorpej 901 1.2.2.2 thorpej case TIOCMSET: 902 1.2.2.2 thorpej case TIOCMBIS: 903 1.2.2.2 thorpej case TIOCMBIC: 904 1.2.2.2 thorpej tiocm_to_plcom(sc, cmd, *(int *)data); 905 1.2.2.2 thorpej break; 906 1.2.2.2 thorpej 907 1.2.2.2 thorpej case TIOCMGET: 908 1.2.2.2 thorpej *(int *)data = plcom_to_tiocm(sc); 909 1.2.2.2 thorpej break; 910 1.2.2.2 thorpej 911 1.2.2.2 thorpej case PPS_IOC_CREATE: 912 1.2.2.2 thorpej break; 913 1.2.2.2 thorpej 914 1.2.2.2 thorpej case PPS_IOC_DESTROY: 915 1.2.2.2 thorpej break; 916 1.2.2.2 thorpej 917 1.2.2.2 thorpej case PPS_IOC_GETPARAMS: { 918 1.2.2.2 thorpej pps_params_t *pp; 919 1.2.2.2 thorpej pp = (pps_params_t *)data; 920 1.2.2.2 thorpej *pp = sc->ppsparam; 921 1.2.2.2 thorpej break; 922 1.2.2.2 thorpej } 923 1.2.2.2 thorpej 924 1.2.2.2 thorpej case PPS_IOC_SETPARAMS: { 925 1.2.2.2 thorpej pps_params_t *pp; 926 1.2.2.2 thorpej int mode; 927 1.2.2.2 thorpej pp = (pps_params_t *)data; 928 1.2.2.2 thorpej if (pp->mode & ~ppscap) { 929 1.2.2.2 thorpej error = EINVAL; 930 1.2.2.2 thorpej break; 931 1.2.2.2 thorpej } 932 1.2.2.2 thorpej sc->ppsparam = *pp; 933 1.2.2.2 thorpej /* 934 1.2.2.2 thorpej * Compute msr masks from user-specified timestamp state. 935 1.2.2.2 thorpej */ 936 1.2.2.2 thorpej mode = sc->ppsparam.mode; 937 1.2.2.2 thorpej #ifdef PPS_SYNC 938 1.2.2.2 thorpej if (mode & PPS_HARDPPSONASSERT) { 939 1.2.2.2 thorpej mode |= PPS_CAPTUREASSERT; 940 1.2.2.2 thorpej /* XXX revoke any previous HARDPPS source */ 941 1.2.2.2 thorpej } 942 1.2.2.2 thorpej if (mode & PPS_HARDPPSONCLEAR) { 943 1.2.2.2 thorpej mode |= PPS_CAPTURECLEAR; 944 1.2.2.2 thorpej /* XXX revoke any previous HARDPPS source */ 945 1.2.2.2 thorpej } 946 1.2.2.2 thorpej #endif /* PPS_SYNC */ 947 1.2.2.2 thorpej switch (mode & PPS_CAPTUREBOTH) { 948 1.2.2.2 thorpej case 0: 949 1.2.2.2 thorpej sc->sc_ppsmask = 0; 950 1.2.2.2 thorpej break; 951 1.2.2.2 thorpej 952 1.2.2.2 thorpej case PPS_CAPTUREASSERT: 953 1.2.2.2 thorpej sc->sc_ppsmask = MSR_DCD; 954 1.2.2.2 thorpej sc->sc_ppsassert = MSR_DCD; 955 1.2.2.2 thorpej sc->sc_ppsclear = -1; 956 1.2.2.2 thorpej break; 957 1.2.2.2 thorpej 958 1.2.2.2 thorpej case PPS_CAPTURECLEAR: 959 1.2.2.2 thorpej sc->sc_ppsmask = MSR_DCD; 960 1.2.2.2 thorpej sc->sc_ppsassert = -1; 961 1.2.2.2 thorpej sc->sc_ppsclear = 0; 962 1.2.2.2 thorpej break; 963 1.2.2.2 thorpej 964 1.2.2.2 thorpej case PPS_CAPTUREBOTH: 965 1.2.2.2 thorpej sc->sc_ppsmask = MSR_DCD; 966 1.2.2.2 thorpej sc->sc_ppsassert = MSR_DCD; 967 1.2.2.2 thorpej sc->sc_ppsclear = 0; 968 1.2.2.2 thorpej break; 969 1.2.2.2 thorpej 970 1.2.2.2 thorpej default: 971 1.2.2.2 thorpej error = EINVAL; 972 1.2.2.2 thorpej break; 973 1.2.2.2 thorpej } 974 1.2.2.2 thorpej break; 975 1.2.2.2 thorpej } 976 1.2.2.2 thorpej 977 1.2.2.2 thorpej case PPS_IOC_GETCAP: 978 1.2.2.2 thorpej *(int*)data = ppscap; 979 1.2.2.2 thorpej break; 980 1.2.2.2 thorpej 981 1.2.2.2 thorpej case PPS_IOC_FETCH: { 982 1.2.2.2 thorpej pps_info_t *pi; 983 1.2.2.2 thorpej pi = (pps_info_t *)data; 984 1.2.2.2 thorpej *pi = sc->ppsinfo; 985 1.2.2.2 thorpej break; 986 1.2.2.2 thorpej } 987 1.2.2.2 thorpej 988 1.2.2.2 thorpej case TIOCDCDTIMESTAMP: /* XXX old, overloaded API used by xntpd v3 */ 989 1.2.2.2 thorpej /* 990 1.2.2.2 thorpej * Some GPS clocks models use the falling rather than 991 1.2.2.2 thorpej * rising edge as the on-the-second signal. 992 1.2.2.2 thorpej * The old API has no way to specify PPS polarity. 993 1.2.2.2 thorpej */ 994 1.2.2.2 thorpej sc->sc_ppsmask = MSR_DCD; 995 1.2.2.2 thorpej #ifndef PPS_TRAILING_EDGE 996 1.2.2.2 thorpej sc->sc_ppsassert = MSR_DCD; 997 1.2.2.2 thorpej sc->sc_ppsclear = -1; 998 1.2.2.2 thorpej TIMESPEC_TO_TIMEVAL((struct timeval *)data, 999 1.2.2.2 thorpej &sc->ppsinfo.assert_timestamp); 1000 1.2.2.2 thorpej #else 1001 1.2.2.2 thorpej sc->sc_ppsassert = -1 1002 1.2.2.2 thorpej sc->sc_ppsclear = 0; 1003 1.2.2.2 thorpej TIMESPEC_TO_TIMEVAL((struct timeval *)data, 1004 1.2.2.2 thorpej &sc->ppsinfo.clear_timestamp); 1005 1.2.2.2 thorpej #endif 1006 1.2.2.2 thorpej break; 1007 1.2.2.2 thorpej 1008 1.2.2.2 thorpej default: 1009 1.2.2.3 jdolecek error = EPASSTHROUGH; 1010 1.2.2.2 thorpej break; 1011 1.2.2.2 thorpej } 1012 1.2.2.2 thorpej 1013 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 1014 1.2.2.2 thorpej splx(s); 1015 1.2.2.2 thorpej 1016 1.2.2.2 thorpej #ifdef PLCOM_DEBUG 1017 1.2.2.2 thorpej if (plcom_debug) 1018 1.2.2.2 thorpej plcomstatus(sc, "plcomioctl "); 1019 1.2.2.2 thorpej #endif 1020 1.2.2.2 thorpej 1021 1.2.2.2 thorpej return error; 1022 1.2.2.2 thorpej } 1023 1.2.2.2 thorpej 1024 1.2.2.2 thorpej integrate void 1025 1.2.2.2 thorpej plcom_schedrx(struct plcom_softc *sc) 1026 1.2.2.2 thorpej { 1027 1.2.2.2 thorpej 1028 1.2.2.2 thorpej sc->sc_rx_ready = 1; 1029 1.2.2.2 thorpej 1030 1.2.2.2 thorpej /* Wake up the poller. */ 1031 1.2.2.2 thorpej #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 1032 1.2.2.2 thorpej softintr_schedule(sc->sc_si); 1033 1.2.2.2 thorpej #else 1034 1.2.2.2 thorpej #ifndef __NO_SOFT_SERIAL_INTERRUPT 1035 1.2.2.2 thorpej setsoftserial(); 1036 1.2.2.2 thorpej #else 1037 1.2.2.2 thorpej if (!plcom_softintr_scheduled) { 1038 1.2.2.2 thorpej plcom_softintr_scheduled = 1; 1039 1.2.2.2 thorpej callout_reset(&plcomsoft_callout, 1, plcomsoft, NULL); 1040 1.2.2.2 thorpej } 1041 1.2.2.2 thorpej #endif 1042 1.2.2.2 thorpej #endif 1043 1.2.2.2 thorpej } 1044 1.2.2.2 thorpej 1045 1.2.2.2 thorpej void 1046 1.2.2.2 thorpej plcom_break(struct plcom_softc *sc, int onoff) 1047 1.2.2.2 thorpej { 1048 1.2.2.2 thorpej 1049 1.2.2.2 thorpej if (onoff) 1050 1.2.2.2 thorpej SET(sc->sc_lcr, LCR_BRK); 1051 1.2.2.2 thorpej else 1052 1.2.2.2 thorpej CLR(sc->sc_lcr, LCR_BRK); 1053 1.2.2.2 thorpej 1054 1.2.2.2 thorpej if (!sc->sc_heldchange) { 1055 1.2.2.2 thorpej if (sc->sc_tx_busy) { 1056 1.2.2.2 thorpej sc->sc_heldtbc = sc->sc_tbc; 1057 1.2.2.2 thorpej sc->sc_tbc = 0; 1058 1.2.2.2 thorpej sc->sc_heldchange = 1; 1059 1.2.2.2 thorpej } else 1060 1.2.2.2 thorpej plcom_loadchannelregs(sc); 1061 1.2.2.2 thorpej } 1062 1.2.2.2 thorpej } 1063 1.2.2.2 thorpej 1064 1.2.2.2 thorpej void 1065 1.2.2.2 thorpej plcom_modem(struct plcom_softc *sc, int onoff) 1066 1.2.2.2 thorpej { 1067 1.2.2.2 thorpej 1068 1.2.2.2 thorpej if (sc->sc_mcr_dtr == 0) 1069 1.2.2.2 thorpej return; 1070 1.2.2.2 thorpej 1071 1.2.2.2 thorpej if (onoff) 1072 1.2.2.2 thorpej SET(sc->sc_mcr, sc->sc_mcr_dtr); 1073 1.2.2.2 thorpej else 1074 1.2.2.2 thorpej CLR(sc->sc_mcr, sc->sc_mcr_dtr); 1075 1.2.2.2 thorpej 1076 1.2.2.2 thorpej if (!sc->sc_heldchange) { 1077 1.2.2.2 thorpej if (sc->sc_tx_busy) { 1078 1.2.2.2 thorpej sc->sc_heldtbc = sc->sc_tbc; 1079 1.2.2.2 thorpej sc->sc_tbc = 0; 1080 1.2.2.2 thorpej sc->sc_heldchange = 1; 1081 1.2.2.2 thorpej } else 1082 1.2.2.2 thorpej plcom_loadchannelregs(sc); 1083 1.2.2.2 thorpej } 1084 1.2.2.2 thorpej } 1085 1.2.2.2 thorpej 1086 1.2.2.2 thorpej void 1087 1.2.2.2 thorpej tiocm_to_plcom(struct plcom_softc *sc, u_long how, int ttybits) 1088 1.2.2.2 thorpej { 1089 1.2.2.2 thorpej u_char plcombits; 1090 1.2.2.2 thorpej 1091 1.2.2.2 thorpej plcombits = 0; 1092 1.2.2.2 thorpej if (ISSET(ttybits, TIOCM_DTR)) 1093 1.2.2.2 thorpej SET(plcombits, MCR_DTR); 1094 1.2.2.2 thorpej if (ISSET(ttybits, TIOCM_RTS)) 1095 1.2.2.2 thorpej SET(plcombits, MCR_RTS); 1096 1.2.2.2 thorpej 1097 1.2.2.2 thorpej switch (how) { 1098 1.2.2.2 thorpej case TIOCMBIC: 1099 1.2.2.2 thorpej CLR(sc->sc_mcr, plcombits); 1100 1.2.2.2 thorpej break; 1101 1.2.2.2 thorpej 1102 1.2.2.2 thorpej case TIOCMBIS: 1103 1.2.2.2 thorpej SET(sc->sc_mcr, plcombits); 1104 1.2.2.2 thorpej break; 1105 1.2.2.2 thorpej 1106 1.2.2.2 thorpej case TIOCMSET: 1107 1.2.2.2 thorpej CLR(sc->sc_mcr, MCR_DTR | MCR_RTS); 1108 1.2.2.2 thorpej SET(sc->sc_mcr, plcombits); 1109 1.2.2.2 thorpej break; 1110 1.2.2.2 thorpej } 1111 1.2.2.2 thorpej 1112 1.2.2.2 thorpej if (!sc->sc_heldchange) { 1113 1.2.2.2 thorpej if (sc->sc_tx_busy) { 1114 1.2.2.2 thorpej sc->sc_heldtbc = sc->sc_tbc; 1115 1.2.2.2 thorpej sc->sc_tbc = 0; 1116 1.2.2.2 thorpej sc->sc_heldchange = 1; 1117 1.2.2.2 thorpej } else 1118 1.2.2.2 thorpej plcom_loadchannelregs(sc); 1119 1.2.2.2 thorpej } 1120 1.2.2.2 thorpej } 1121 1.2.2.2 thorpej 1122 1.2.2.2 thorpej int 1123 1.2.2.2 thorpej plcom_to_tiocm(struct plcom_softc *sc) 1124 1.2.2.2 thorpej { 1125 1.2.2.2 thorpej u_char plcombits; 1126 1.2.2.2 thorpej int ttybits = 0; 1127 1.2.2.2 thorpej 1128 1.2.2.2 thorpej plcombits = sc->sc_mcr; 1129 1.2.2.2 thorpej if (ISSET(plcombits, MCR_DTR)) 1130 1.2.2.2 thorpej SET(ttybits, TIOCM_DTR); 1131 1.2.2.2 thorpej if (ISSET(plcombits, MCR_RTS)) 1132 1.2.2.2 thorpej SET(ttybits, TIOCM_RTS); 1133 1.2.2.2 thorpej 1134 1.2.2.2 thorpej plcombits = sc->sc_msr; 1135 1.2.2.2 thorpej if (ISSET(plcombits, MSR_DCD)) 1136 1.2.2.2 thorpej SET(ttybits, TIOCM_CD); 1137 1.2.2.2 thorpej if (ISSET(plcombits, MSR_CTS)) 1138 1.2.2.2 thorpej SET(ttybits, TIOCM_CTS); 1139 1.2.2.2 thorpej if (ISSET(plcombits, MSR_DSR)) 1140 1.2.2.2 thorpej SET(ttybits, TIOCM_DSR); 1141 1.2.2.2 thorpej 1142 1.2.2.2 thorpej if (sc->sc_cr != 0) 1143 1.2.2.2 thorpej SET(ttybits, TIOCM_LE); 1144 1.2.2.2 thorpej 1145 1.2.2.2 thorpej return ttybits; 1146 1.2.2.2 thorpej } 1147 1.2.2.2 thorpej 1148 1.2.2.2 thorpej static u_char 1149 1.2.2.2 thorpej cflag2lcr(tcflag_t cflag) 1150 1.2.2.2 thorpej { 1151 1.2.2.2 thorpej u_char lcr = 0; 1152 1.2.2.2 thorpej 1153 1.2.2.2 thorpej switch (ISSET(cflag, CSIZE)) { 1154 1.2.2.2 thorpej case CS5: 1155 1.2.2.2 thorpej SET(lcr, LCR_5BITS); 1156 1.2.2.2 thorpej break; 1157 1.2.2.2 thorpej case CS6: 1158 1.2.2.2 thorpej SET(lcr, LCR_6BITS); 1159 1.2.2.2 thorpej break; 1160 1.2.2.2 thorpej case CS7: 1161 1.2.2.2 thorpej SET(lcr, LCR_7BITS); 1162 1.2.2.2 thorpej break; 1163 1.2.2.2 thorpej case CS8: 1164 1.2.2.2 thorpej SET(lcr, LCR_8BITS); 1165 1.2.2.2 thorpej break; 1166 1.2.2.2 thorpej } 1167 1.2.2.2 thorpej if (ISSET(cflag, PARENB)) { 1168 1.2.2.2 thorpej SET(lcr, LCR_PEN); 1169 1.2.2.2 thorpej if (!ISSET(cflag, PARODD)) 1170 1.2.2.2 thorpej SET(lcr, LCR_EPS); 1171 1.2.2.2 thorpej } 1172 1.2.2.2 thorpej if (ISSET(cflag, CSTOPB)) 1173 1.2.2.2 thorpej SET(lcr, LCR_STP2); 1174 1.2.2.2 thorpej 1175 1.2.2.2 thorpej return lcr; 1176 1.2.2.2 thorpej } 1177 1.2.2.2 thorpej 1178 1.2.2.2 thorpej int 1179 1.2.2.2 thorpej plcomparam(struct tty *tp, struct termios *t) 1180 1.2.2.2 thorpej { 1181 1.2.2.2 thorpej struct plcom_softc *sc = device_lookup(&plcom_cd, PLCOMUNIT(tp->t_dev)); 1182 1.2.2.2 thorpej int ospeed; 1183 1.2.2.2 thorpej u_char lcr; 1184 1.2.2.2 thorpej int s; 1185 1.2.2.2 thorpej 1186 1.2.2.2 thorpej if (PLCOM_ISALIVE(sc) == 0) 1187 1.2.2.2 thorpej return EIO; 1188 1.2.2.2 thorpej 1189 1.2.2.2 thorpej ospeed = plcomspeed(t->c_ospeed, sc->sc_frequency); 1190 1.2.2.2 thorpej 1191 1.2.2.2 thorpej /* Check requested parameters. */ 1192 1.2.2.2 thorpej if (ospeed < 0) 1193 1.2.2.2 thorpej return EINVAL; 1194 1.2.2.2 thorpej if (t->c_ispeed && t->c_ispeed != t->c_ospeed) 1195 1.2.2.2 thorpej return EINVAL; 1196 1.2.2.2 thorpej 1197 1.2.2.2 thorpej /* 1198 1.2.2.2 thorpej * For the console, always force CLOCAL and !HUPCL, so that the port 1199 1.2.2.2 thorpej * is always active. 1200 1.2.2.2 thorpej */ 1201 1.2.2.2 thorpej if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR) || 1202 1.2.2.2 thorpej ISSET(sc->sc_hwflags, PLCOM_HW_CONSOLE)) { 1203 1.2.2.2 thorpej SET(t->c_cflag, CLOCAL); 1204 1.2.2.2 thorpej CLR(t->c_cflag, HUPCL); 1205 1.2.2.2 thorpej } 1206 1.2.2.2 thorpej 1207 1.2.2.2 thorpej /* 1208 1.2.2.2 thorpej * If there were no changes, don't do anything. This avoids dropping 1209 1.2.2.2 thorpej * input and improves performance when all we did was frob things like 1210 1.2.2.2 thorpej * VMIN and VTIME. 1211 1.2.2.2 thorpej */ 1212 1.2.2.2 thorpej if (tp->t_ospeed == t->c_ospeed && 1213 1.2.2.2 thorpej tp->t_cflag == t->c_cflag) 1214 1.2.2.2 thorpej return 0; 1215 1.2.2.2 thorpej 1216 1.2.2.2 thorpej lcr = ISSET(sc->sc_lcr, LCR_BRK) | cflag2lcr(t->c_cflag); 1217 1.2.2.2 thorpej 1218 1.2.2.2 thorpej s = splserial(); 1219 1.2.2.2 thorpej PLCOM_LOCK(sc); 1220 1.2.2.2 thorpej 1221 1.2.2.2 thorpej sc->sc_lcr = lcr; 1222 1.2.2.2 thorpej 1223 1.2.2.2 thorpej /* 1224 1.2.2.2 thorpej * PL010 has a fixed-length FIFO trigger point. 1225 1.2.2.2 thorpej */ 1226 1.2.2.2 thorpej if (ISSET(sc->sc_hwflags, PLCOM_HW_FIFO)) 1227 1.2.2.2 thorpej sc->sc_fifo = 1; 1228 1.2.2.2 thorpej else 1229 1.2.2.2 thorpej sc->sc_fifo = 0; 1230 1.2.2.2 thorpej 1231 1.2.2.2 thorpej if (sc->sc_fifo) 1232 1.2.2.2 thorpej SET(sc->sc_lcr, LCR_FEN); 1233 1.2.2.2 thorpej 1234 1.2.2.2 thorpej /* 1235 1.2.2.2 thorpej * If we're not in a mode that assumes a connection is present, then 1236 1.2.2.2 thorpej * ignore carrier changes. 1237 1.2.2.2 thorpej */ 1238 1.2.2.2 thorpej if (ISSET(t->c_cflag, CLOCAL | MDMBUF)) 1239 1.2.2.2 thorpej sc->sc_msr_dcd = 0; 1240 1.2.2.2 thorpej else 1241 1.2.2.2 thorpej sc->sc_msr_dcd = MSR_DCD; 1242 1.2.2.2 thorpej /* 1243 1.2.2.2 thorpej * Set the flow control pins depending on the current flow control 1244 1.2.2.2 thorpej * mode. 1245 1.2.2.2 thorpej */ 1246 1.2.2.2 thorpej if (ISSET(t->c_cflag, CRTSCTS)) { 1247 1.2.2.2 thorpej sc->sc_mcr_dtr = MCR_DTR; 1248 1.2.2.2 thorpej sc->sc_mcr_rts = MCR_RTS; 1249 1.2.2.2 thorpej sc->sc_msr_cts = MSR_CTS; 1250 1.2.2.2 thorpej } else if (ISSET(t->c_cflag, MDMBUF)) { 1251 1.2.2.2 thorpej /* 1252 1.2.2.2 thorpej * For DTR/DCD flow control, make sure we don't toggle DTR for 1253 1.2.2.2 thorpej * carrier detection. 1254 1.2.2.2 thorpej */ 1255 1.2.2.2 thorpej sc->sc_mcr_dtr = 0; 1256 1.2.2.2 thorpej sc->sc_mcr_rts = MCR_DTR; 1257 1.2.2.2 thorpej sc->sc_msr_cts = MSR_DCD; 1258 1.2.2.2 thorpej } else { 1259 1.2.2.2 thorpej /* 1260 1.2.2.2 thorpej * If no flow control, then always set RTS. This will make 1261 1.2.2.2 thorpej * the other side happy if it mistakenly thinks we're doing 1262 1.2.2.2 thorpej * RTS/CTS flow control. 1263 1.2.2.2 thorpej */ 1264 1.2.2.2 thorpej sc->sc_mcr_dtr = MCR_DTR | MCR_RTS; 1265 1.2.2.2 thorpej sc->sc_mcr_rts = 0; 1266 1.2.2.2 thorpej sc->sc_msr_cts = 0; 1267 1.2.2.2 thorpej if (ISSET(sc->sc_mcr, MCR_DTR)) 1268 1.2.2.2 thorpej SET(sc->sc_mcr, MCR_RTS); 1269 1.2.2.2 thorpej else 1270 1.2.2.2 thorpej CLR(sc->sc_mcr, MCR_RTS); 1271 1.2.2.2 thorpej } 1272 1.2.2.2 thorpej sc->sc_msr_mask = sc->sc_msr_cts | sc->sc_msr_dcd; 1273 1.2.2.2 thorpej 1274 1.2.2.2 thorpej #if 0 1275 1.2.2.2 thorpej if (ospeed == 0) 1276 1.2.2.2 thorpej CLR(sc->sc_mcr, sc->sc_mcr_dtr); 1277 1.2.2.2 thorpej else 1278 1.2.2.2 thorpej SET(sc->sc_mcr, sc->sc_mcr_dtr); 1279 1.2.2.2 thorpej #endif 1280 1.2.2.2 thorpej 1281 1.2.2.2 thorpej sc->sc_dlbl = ospeed; 1282 1.2.2.2 thorpej sc->sc_dlbh = ospeed >> 8; 1283 1.2.2.2 thorpej 1284 1.2.2.2 thorpej /* And copy to tty. */ 1285 1.2.2.2 thorpej tp->t_ispeed = 0; 1286 1.2.2.2 thorpej tp->t_ospeed = t->c_ospeed; 1287 1.2.2.2 thorpej tp->t_cflag = t->c_cflag; 1288 1.2.2.2 thorpej 1289 1.2.2.2 thorpej if (!sc->sc_heldchange) { 1290 1.2.2.2 thorpej if (sc->sc_tx_busy) { 1291 1.2.2.2 thorpej sc->sc_heldtbc = sc->sc_tbc; 1292 1.2.2.2 thorpej sc->sc_tbc = 0; 1293 1.2.2.2 thorpej sc->sc_heldchange = 1; 1294 1.2.2.2 thorpej } else 1295 1.2.2.2 thorpej plcom_loadchannelregs(sc); 1296 1.2.2.2 thorpej } 1297 1.2.2.2 thorpej 1298 1.2.2.2 thorpej if (!ISSET(t->c_cflag, CHWFLOW)) { 1299 1.2.2.2 thorpej /* Disable the high water mark. */ 1300 1.2.2.2 thorpej sc->sc_r_hiwat = 0; 1301 1.2.2.2 thorpej sc->sc_r_lowat = 0; 1302 1.2.2.2 thorpej if (ISSET(sc->sc_rx_flags, RX_TTY_OVERFLOWED)) { 1303 1.2.2.2 thorpej CLR(sc->sc_rx_flags, RX_TTY_OVERFLOWED); 1304 1.2.2.2 thorpej plcom_schedrx(sc); 1305 1.2.2.2 thorpej } 1306 1.2.2.2 thorpej if (ISSET(sc->sc_rx_flags, RX_TTY_BLOCKED|RX_IBUF_BLOCKED)) { 1307 1.2.2.2 thorpej CLR(sc->sc_rx_flags, RX_TTY_BLOCKED|RX_IBUF_BLOCKED); 1308 1.2.2.2 thorpej plcom_hwiflow(sc); 1309 1.2.2.2 thorpej } 1310 1.2.2.2 thorpej } else { 1311 1.2.2.2 thorpej sc->sc_r_hiwat = plcom_rbuf_hiwat; 1312 1.2.2.2 thorpej sc->sc_r_lowat = plcom_rbuf_lowat; 1313 1.2.2.2 thorpej } 1314 1.2.2.2 thorpej 1315 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 1316 1.2.2.2 thorpej splx(s); 1317 1.2.2.2 thorpej 1318 1.2.2.2 thorpej /* 1319 1.2.2.2 thorpej * Update the tty layer's idea of the carrier bit, in case we changed 1320 1.2.2.2 thorpej * CLOCAL or MDMBUF. We don't hang up here; we only do that by 1321 1.2.2.2 thorpej * explicit request. 1322 1.2.2.2 thorpej */ 1323 1.2.2.2 thorpej (void) (*tp->t_linesw->l_modem)(tp, ISSET(sc->sc_msr, MSR_DCD)); 1324 1.2.2.2 thorpej 1325 1.2.2.2 thorpej #ifdef PLCOM_DEBUG 1326 1.2.2.2 thorpej if (plcom_debug) 1327 1.2.2.2 thorpej plcomstatus(sc, "plcomparam "); 1328 1.2.2.2 thorpej #endif 1329 1.2.2.2 thorpej 1330 1.2.2.2 thorpej if (!ISSET(t->c_cflag, CHWFLOW)) { 1331 1.2.2.2 thorpej if (sc->sc_tx_stopped) { 1332 1.2.2.2 thorpej sc->sc_tx_stopped = 0; 1333 1.2.2.2 thorpej plcomstart(tp); 1334 1.2.2.2 thorpej } 1335 1.2.2.2 thorpej } 1336 1.2.2.2 thorpej 1337 1.2.2.2 thorpej return 0; 1338 1.2.2.2 thorpej } 1339 1.2.2.2 thorpej 1340 1.2.2.2 thorpej void 1341 1.2.2.2 thorpej plcom_iflush(struct plcom_softc *sc) 1342 1.2.2.2 thorpej { 1343 1.2.2.2 thorpej bus_space_tag_t iot = sc->sc_iot; 1344 1.2.2.2 thorpej bus_space_handle_t ioh = sc->sc_ioh; 1345 1.2.2.2 thorpej #ifdef DIAGNOSTIC 1346 1.2.2.2 thorpej int reg; 1347 1.2.2.2 thorpej #endif 1348 1.2.2.2 thorpej int timo; 1349 1.2.2.2 thorpej 1350 1.2.2.2 thorpej #ifdef DIAGNOSTIC 1351 1.2.2.2 thorpej reg = 0xffff; 1352 1.2.2.2 thorpej #endif 1353 1.2.2.2 thorpej timo = 50000; 1354 1.2.2.2 thorpej /* flush any pending I/O */ 1355 1.2.2.2 thorpej while (! ISSET(bus_space_read_1(iot, ioh, plcom_fr), FR_RXFE) 1356 1.2.2.2 thorpej && --timo) 1357 1.2.2.2 thorpej #ifdef DIAGNOSTIC 1358 1.2.2.2 thorpej reg = 1359 1.2.2.2 thorpej #else 1360 1.2.2.2 thorpej (void) 1361 1.2.2.2 thorpej #endif 1362 1.2.2.2 thorpej bus_space_read_1(iot, ioh, plcom_dr); 1363 1.2.2.2 thorpej #ifdef DIAGNOSTIC 1364 1.2.2.2 thorpej if (!timo) 1365 1.2.2.2 thorpej printf("%s: plcom_iflush timeout %02x\n", sc->sc_dev.dv_xname, 1366 1.2.2.2 thorpej reg); 1367 1.2.2.2 thorpej #endif 1368 1.2.2.2 thorpej } 1369 1.2.2.2 thorpej 1370 1.2.2.2 thorpej void 1371 1.2.2.2 thorpej plcom_loadchannelregs(struct plcom_softc *sc) 1372 1.2.2.2 thorpej { 1373 1.2.2.2 thorpej bus_space_tag_t iot = sc->sc_iot; 1374 1.2.2.2 thorpej bus_space_handle_t ioh = sc->sc_ioh; 1375 1.2.2.2 thorpej 1376 1.2.2.2 thorpej /* XXXXX necessary? */ 1377 1.2.2.2 thorpej plcom_iflush(sc); 1378 1.2.2.2 thorpej 1379 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, 0); 1380 1.2.2.2 thorpej 1381 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_dlbl, sc->sc_dlbl); 1382 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_dlbh, sc->sc_dlbh); 1383 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_lcr, sc->sc_lcr); 1384 1.2.2.2 thorpej sc->sc_set_mcr(sc->sc_set_mcr_arg, sc->sc_dev.dv_unit, 1385 1.2.2.2 thorpej sc->sc_mcr_active = sc->sc_mcr); 1386 1.2.2.2 thorpej 1387 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, sc->sc_cr); 1388 1.2.2.2 thorpej } 1389 1.2.2.2 thorpej 1390 1.2.2.2 thorpej int 1391 1.2.2.2 thorpej plcomhwiflow(struct tty *tp, int block) 1392 1.2.2.2 thorpej { 1393 1.2.2.2 thorpej struct plcom_softc *sc = device_lookup(&plcom_cd, PLCOMUNIT(tp->t_dev)); 1394 1.2.2.2 thorpej int s; 1395 1.2.2.2 thorpej 1396 1.2.2.2 thorpej if (PLCOM_ISALIVE(sc) == 0) 1397 1.2.2.2 thorpej return 0; 1398 1.2.2.2 thorpej 1399 1.2.2.2 thorpej if (sc->sc_mcr_rts == 0) 1400 1.2.2.2 thorpej return 0; 1401 1.2.2.2 thorpej 1402 1.2.2.2 thorpej s = splserial(); 1403 1.2.2.2 thorpej PLCOM_LOCK(sc); 1404 1.2.2.2 thorpej 1405 1.2.2.2 thorpej if (block) { 1406 1.2.2.2 thorpej if (!ISSET(sc->sc_rx_flags, RX_TTY_BLOCKED)) { 1407 1.2.2.2 thorpej SET(sc->sc_rx_flags, RX_TTY_BLOCKED); 1408 1.2.2.2 thorpej plcom_hwiflow(sc); 1409 1.2.2.2 thorpej } 1410 1.2.2.2 thorpej } else { 1411 1.2.2.2 thorpej if (ISSET(sc->sc_rx_flags, RX_TTY_OVERFLOWED)) { 1412 1.2.2.2 thorpej CLR(sc->sc_rx_flags, RX_TTY_OVERFLOWED); 1413 1.2.2.2 thorpej plcom_schedrx(sc); 1414 1.2.2.2 thorpej } 1415 1.2.2.2 thorpej if (ISSET(sc->sc_rx_flags, RX_TTY_BLOCKED)) { 1416 1.2.2.2 thorpej CLR(sc->sc_rx_flags, RX_TTY_BLOCKED); 1417 1.2.2.2 thorpej plcom_hwiflow(sc); 1418 1.2.2.2 thorpej } 1419 1.2.2.2 thorpej } 1420 1.2.2.2 thorpej 1421 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 1422 1.2.2.2 thorpej splx(s); 1423 1.2.2.2 thorpej return 1; 1424 1.2.2.2 thorpej } 1425 1.2.2.2 thorpej 1426 1.2.2.2 thorpej /* 1427 1.2.2.2 thorpej * (un)block input via hw flowcontrol 1428 1.2.2.2 thorpej */ 1429 1.2.2.2 thorpej void 1430 1.2.2.2 thorpej plcom_hwiflow(struct plcom_softc *sc) 1431 1.2.2.2 thorpej { 1432 1.2.2.2 thorpej if (sc->sc_mcr_rts == 0) 1433 1.2.2.2 thorpej return; 1434 1.2.2.2 thorpej 1435 1.2.2.2 thorpej if (ISSET(sc->sc_rx_flags, RX_ANY_BLOCK)) { 1436 1.2.2.2 thorpej CLR(sc->sc_mcr, sc->sc_mcr_rts); 1437 1.2.2.2 thorpej CLR(sc->sc_mcr_active, sc->sc_mcr_rts); 1438 1.2.2.2 thorpej } else { 1439 1.2.2.2 thorpej SET(sc->sc_mcr, sc->sc_mcr_rts); 1440 1.2.2.2 thorpej SET(sc->sc_mcr_active, sc->sc_mcr_rts); 1441 1.2.2.2 thorpej } 1442 1.2.2.2 thorpej sc->sc_set_mcr(sc->sc_set_mcr_arg, sc->sc_dev.dv_unit, 1443 1.2.2.2 thorpej sc->sc_mcr_active); 1444 1.2.2.2 thorpej } 1445 1.2.2.2 thorpej 1446 1.2.2.2 thorpej 1447 1.2.2.2 thorpej void 1448 1.2.2.2 thorpej plcomstart(struct tty *tp) 1449 1.2.2.2 thorpej { 1450 1.2.2.2 thorpej struct plcom_softc *sc = device_lookup(&plcom_cd, PLCOMUNIT(tp->t_dev)); 1451 1.2.2.2 thorpej bus_space_tag_t iot = sc->sc_iot; 1452 1.2.2.2 thorpej bus_space_handle_t ioh = sc->sc_ioh; 1453 1.2.2.2 thorpej int s; 1454 1.2.2.2 thorpej 1455 1.2.2.2 thorpej if (PLCOM_ISALIVE(sc) == 0) 1456 1.2.2.2 thorpej return; 1457 1.2.2.2 thorpej 1458 1.2.2.2 thorpej s = spltty(); 1459 1.2.2.2 thorpej if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) 1460 1.2.2.2 thorpej goto out; 1461 1.2.2.2 thorpej if (sc->sc_tx_stopped) 1462 1.2.2.2 thorpej goto out; 1463 1.2.2.2 thorpej 1464 1.2.2.2 thorpej if (tp->t_outq.c_cc <= tp->t_lowat) { 1465 1.2.2.2 thorpej if (ISSET(tp->t_state, TS_ASLEEP)) { 1466 1.2.2.2 thorpej CLR(tp->t_state, TS_ASLEEP); 1467 1.2.2.2 thorpej wakeup(&tp->t_outq); 1468 1.2.2.2 thorpej } 1469 1.2.2.2 thorpej selwakeup(&tp->t_wsel); 1470 1.2.2.2 thorpej if (tp->t_outq.c_cc == 0) 1471 1.2.2.2 thorpej goto out; 1472 1.2.2.2 thorpej } 1473 1.2.2.2 thorpej 1474 1.2.2.2 thorpej /* Grab the first contiguous region of buffer space. */ 1475 1.2.2.2 thorpej { 1476 1.2.2.2 thorpej u_char *tba; 1477 1.2.2.2 thorpej int tbc; 1478 1.2.2.2 thorpej 1479 1.2.2.2 thorpej tba = tp->t_outq.c_cf; 1480 1.2.2.2 thorpej tbc = ndqb(&tp->t_outq, 0); 1481 1.2.2.2 thorpej 1482 1.2.2.2 thorpej (void)splserial(); 1483 1.2.2.2 thorpej PLCOM_LOCK(sc); 1484 1.2.2.2 thorpej 1485 1.2.2.2 thorpej sc->sc_tba = tba; 1486 1.2.2.2 thorpej sc->sc_tbc = tbc; 1487 1.2.2.2 thorpej } 1488 1.2.2.2 thorpej 1489 1.2.2.2 thorpej SET(tp->t_state, TS_BUSY); 1490 1.2.2.2 thorpej sc->sc_tx_busy = 1; 1491 1.2.2.2 thorpej 1492 1.2.2.2 thorpej /* Enable transmit completion interrupts if necessary. */ 1493 1.2.2.2 thorpej if (!ISSET(sc->sc_cr, CR_TIE)) { 1494 1.2.2.2 thorpej SET(sc->sc_cr, CR_TIE); 1495 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, sc->sc_cr); 1496 1.2.2.2 thorpej } 1497 1.2.2.2 thorpej 1498 1.2.2.2 thorpej /* Output the first chunk of the contiguous buffer. */ 1499 1.2.2.2 thorpej { 1500 1.2.2.2 thorpej int n; 1501 1.2.2.2 thorpej 1502 1.2.2.2 thorpej n = sc->sc_tbc; 1503 1.2.2.2 thorpej if (n > sc->sc_fifolen) 1504 1.2.2.2 thorpej n = sc->sc_fifolen; 1505 1.2.2.2 thorpej bus_space_write_multi_1(iot, ioh, plcom_dr, sc->sc_tba, n); 1506 1.2.2.2 thorpej sc->sc_tbc -= n; 1507 1.2.2.2 thorpej sc->sc_tba += n; 1508 1.2.2.2 thorpej } 1509 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 1510 1.2.2.2 thorpej out: 1511 1.2.2.2 thorpej splx(s); 1512 1.2.2.2 thorpej return; 1513 1.2.2.2 thorpej } 1514 1.2.2.2 thorpej 1515 1.2.2.2 thorpej /* 1516 1.2.2.2 thorpej * Stop output on a line. 1517 1.2.2.2 thorpej */ 1518 1.2.2.2 thorpej void 1519 1.2.2.2 thorpej plcomstop(struct tty *tp, int flag) 1520 1.2.2.2 thorpej { 1521 1.2.2.2 thorpej struct plcom_softc *sc = device_lookup(&plcom_cd, PLCOMUNIT(tp->t_dev)); 1522 1.2.2.2 thorpej int s; 1523 1.2.2.2 thorpej 1524 1.2.2.2 thorpej s = splserial(); 1525 1.2.2.2 thorpej PLCOM_LOCK(sc); 1526 1.2.2.2 thorpej if (ISSET(tp->t_state, TS_BUSY)) { 1527 1.2.2.2 thorpej /* Stop transmitting at the next chunk. */ 1528 1.2.2.2 thorpej sc->sc_tbc = 0; 1529 1.2.2.2 thorpej sc->sc_heldtbc = 0; 1530 1.2.2.2 thorpej if (!ISSET(tp->t_state, TS_TTSTOP)) 1531 1.2.2.2 thorpej SET(tp->t_state, TS_FLUSH); 1532 1.2.2.2 thorpej } 1533 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 1534 1.2.2.2 thorpej splx(s); 1535 1.2.2.2 thorpej } 1536 1.2.2.2 thorpej 1537 1.2.2.2 thorpej void 1538 1.2.2.2 thorpej plcomdiag(void *arg) 1539 1.2.2.2 thorpej { 1540 1.2.2.2 thorpej struct plcom_softc *sc = arg; 1541 1.2.2.2 thorpej int overflows, floods; 1542 1.2.2.2 thorpej int s; 1543 1.2.2.2 thorpej 1544 1.2.2.2 thorpej s = splserial(); 1545 1.2.2.2 thorpej PLCOM_LOCK(sc); 1546 1.2.2.2 thorpej overflows = sc->sc_overflows; 1547 1.2.2.2 thorpej sc->sc_overflows = 0; 1548 1.2.2.2 thorpej floods = sc->sc_floods; 1549 1.2.2.2 thorpej sc->sc_floods = 0; 1550 1.2.2.2 thorpej sc->sc_errors = 0; 1551 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 1552 1.2.2.2 thorpej splx(s); 1553 1.2.2.2 thorpej 1554 1.2.2.2 thorpej log(LOG_WARNING, "%s: %d silo overflow%s, %d ibuf flood%s\n", 1555 1.2.2.2 thorpej sc->sc_dev.dv_xname, 1556 1.2.2.2 thorpej overflows, overflows == 1 ? "" : "s", 1557 1.2.2.2 thorpej floods, floods == 1 ? "" : "s"); 1558 1.2.2.2 thorpej } 1559 1.2.2.2 thorpej 1560 1.2.2.2 thorpej integrate void 1561 1.2.2.2 thorpej plcom_rxsoft(struct plcom_softc *sc, struct tty *tp) 1562 1.2.2.2 thorpej { 1563 1.2.2.2 thorpej int (*rint) (int, struct tty *) = tp->t_linesw->l_rint; 1564 1.2.2.2 thorpej u_char *get, *end; 1565 1.2.2.2 thorpej u_int cc, scc; 1566 1.2.2.2 thorpej u_char rsr; 1567 1.2.2.2 thorpej int code; 1568 1.2.2.2 thorpej int s; 1569 1.2.2.2 thorpej 1570 1.2.2.2 thorpej end = sc->sc_ebuf; 1571 1.2.2.2 thorpej get = sc->sc_rbget; 1572 1.2.2.2 thorpej scc = cc = plcom_rbuf_size - sc->sc_rbavail; 1573 1.2.2.2 thorpej 1574 1.2.2.2 thorpej if (cc == plcom_rbuf_size) { 1575 1.2.2.2 thorpej sc->sc_floods++; 1576 1.2.2.2 thorpej if (sc->sc_errors++ == 0) 1577 1.2.2.2 thorpej callout_reset(&sc->sc_diag_callout, 60 * hz, 1578 1.2.2.2 thorpej plcomdiag, sc); 1579 1.2.2.2 thorpej } 1580 1.2.2.2 thorpej 1581 1.2.2.2 thorpej while (cc) { 1582 1.2.2.2 thorpej code = get[0]; 1583 1.2.2.2 thorpej rsr = get[1]; 1584 1.2.2.2 thorpej if (ISSET(rsr, RSR_OE | RSR_BE | RSR_FE | RSR_PE)) { 1585 1.2.2.2 thorpej if (ISSET(rsr, RSR_OE)) { 1586 1.2.2.2 thorpej sc->sc_overflows++; 1587 1.2.2.2 thorpej if (sc->sc_errors++ == 0) 1588 1.2.2.2 thorpej callout_reset(&sc->sc_diag_callout, 1589 1.2.2.2 thorpej 60 * hz, plcomdiag, sc); 1590 1.2.2.2 thorpej } 1591 1.2.2.2 thorpej if (ISSET(rsr, RSR_BE | RSR_FE)) 1592 1.2.2.2 thorpej SET(code, TTY_FE); 1593 1.2.2.2 thorpej if (ISSET(rsr, RSR_PE)) 1594 1.2.2.2 thorpej SET(code, TTY_PE); 1595 1.2.2.2 thorpej } 1596 1.2.2.2 thorpej if ((*rint)(code, tp) == -1) { 1597 1.2.2.2 thorpej /* 1598 1.2.2.2 thorpej * The line discipline's buffer is out of space. 1599 1.2.2.2 thorpej */ 1600 1.2.2.2 thorpej if (!ISSET(sc->sc_rx_flags, RX_TTY_BLOCKED)) { 1601 1.2.2.2 thorpej /* 1602 1.2.2.2 thorpej * We're either not using flow control, or the 1603 1.2.2.2 thorpej * line discipline didn't tell us to block for 1604 1.2.2.2 thorpej * some reason. Either way, we have no way to 1605 1.2.2.2 thorpej * know when there's more space available, so 1606 1.2.2.2 thorpej * just drop the rest of the data. 1607 1.2.2.2 thorpej */ 1608 1.2.2.2 thorpej get += cc << 1; 1609 1.2.2.2 thorpej if (get >= end) 1610 1.2.2.2 thorpej get -= plcom_rbuf_size << 1; 1611 1.2.2.2 thorpej cc = 0; 1612 1.2.2.2 thorpej } else { 1613 1.2.2.2 thorpej /* 1614 1.2.2.2 thorpej * Don't schedule any more receive processing 1615 1.2.2.2 thorpej * until the line discipline tells us there's 1616 1.2.2.2 thorpej * space available (through plcomhwiflow()). 1617 1.2.2.2 thorpej * Leave the rest of the data in the input 1618 1.2.2.2 thorpej * buffer. 1619 1.2.2.2 thorpej */ 1620 1.2.2.2 thorpej SET(sc->sc_rx_flags, RX_TTY_OVERFLOWED); 1621 1.2.2.2 thorpej } 1622 1.2.2.2 thorpej break; 1623 1.2.2.2 thorpej } 1624 1.2.2.2 thorpej get += 2; 1625 1.2.2.2 thorpej if (get >= end) 1626 1.2.2.2 thorpej get = sc->sc_rbuf; 1627 1.2.2.2 thorpej cc--; 1628 1.2.2.2 thorpej } 1629 1.2.2.2 thorpej 1630 1.2.2.2 thorpej if (cc != scc) { 1631 1.2.2.2 thorpej sc->sc_rbget = get; 1632 1.2.2.2 thorpej s = splserial(); 1633 1.2.2.2 thorpej PLCOM_LOCK(sc); 1634 1.2.2.2 thorpej 1635 1.2.2.2 thorpej cc = sc->sc_rbavail += scc - cc; 1636 1.2.2.2 thorpej /* Buffers should be ok again, release possible block. */ 1637 1.2.2.2 thorpej if (cc >= sc->sc_r_lowat) { 1638 1.2.2.2 thorpej if (ISSET(sc->sc_rx_flags, RX_IBUF_OVERFLOWED)) { 1639 1.2.2.2 thorpej CLR(sc->sc_rx_flags, RX_IBUF_OVERFLOWED); 1640 1.2.2.2 thorpej SET(sc->sc_cr, CR_RIE | CR_RTIE); 1641 1.2.2.2 thorpej bus_space_write_1(sc->sc_iot, sc->sc_ioh, plcom_cr, sc->sc_cr); 1642 1.2.2.2 thorpej } 1643 1.2.2.2 thorpej if (ISSET(sc->sc_rx_flags, RX_IBUF_BLOCKED)) { 1644 1.2.2.2 thorpej CLR(sc->sc_rx_flags, RX_IBUF_BLOCKED); 1645 1.2.2.2 thorpej plcom_hwiflow(sc); 1646 1.2.2.2 thorpej } 1647 1.2.2.2 thorpej } 1648 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 1649 1.2.2.2 thorpej splx(s); 1650 1.2.2.2 thorpej } 1651 1.2.2.2 thorpej } 1652 1.2.2.2 thorpej 1653 1.2.2.2 thorpej integrate void 1654 1.2.2.2 thorpej plcom_txsoft(struct plcom_softc *sc, struct tty *tp) 1655 1.2.2.2 thorpej { 1656 1.2.2.2 thorpej 1657 1.2.2.2 thorpej CLR(tp->t_state, TS_BUSY); 1658 1.2.2.2 thorpej if (ISSET(tp->t_state, TS_FLUSH)) 1659 1.2.2.2 thorpej CLR(tp->t_state, TS_FLUSH); 1660 1.2.2.2 thorpej else 1661 1.2.2.2 thorpej ndflush(&tp->t_outq, (int)(sc->sc_tba - tp->t_outq.c_cf)); 1662 1.2.2.2 thorpej (*tp->t_linesw->l_start)(tp); 1663 1.2.2.2 thorpej } 1664 1.2.2.2 thorpej 1665 1.2.2.2 thorpej integrate void 1666 1.2.2.2 thorpej plcom_stsoft(struct plcom_softc *sc, struct tty *tp) 1667 1.2.2.2 thorpej { 1668 1.2.2.2 thorpej u_char msr, delta; 1669 1.2.2.2 thorpej int s; 1670 1.2.2.2 thorpej 1671 1.2.2.2 thorpej s = splserial(); 1672 1.2.2.2 thorpej PLCOM_LOCK(sc); 1673 1.2.2.2 thorpej msr = sc->sc_msr; 1674 1.2.2.2 thorpej delta = sc->sc_msr_delta; 1675 1.2.2.2 thorpej sc->sc_msr_delta = 0; 1676 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 1677 1.2.2.2 thorpej splx(s); 1678 1.2.2.2 thorpej 1679 1.2.2.2 thorpej if (ISSET(delta, sc->sc_msr_dcd)) { 1680 1.2.2.2 thorpej /* 1681 1.2.2.2 thorpej * Inform the tty layer that carrier detect changed. 1682 1.2.2.2 thorpej */ 1683 1.2.2.2 thorpej (void) (*tp->t_linesw->l_modem)(tp, ISSET(msr, MSR_DCD)); 1684 1.2.2.2 thorpej } 1685 1.2.2.2 thorpej 1686 1.2.2.2 thorpej if (ISSET(delta, sc->sc_msr_cts)) { 1687 1.2.2.2 thorpej /* Block or unblock output according to flow control. */ 1688 1.2.2.2 thorpej if (ISSET(msr, sc->sc_msr_cts)) { 1689 1.2.2.2 thorpej sc->sc_tx_stopped = 0; 1690 1.2.2.2 thorpej (*tp->t_linesw->l_start)(tp); 1691 1.2.2.2 thorpej } else { 1692 1.2.2.2 thorpej sc->sc_tx_stopped = 1; 1693 1.2.2.2 thorpej } 1694 1.2.2.2 thorpej } 1695 1.2.2.2 thorpej 1696 1.2.2.2 thorpej #ifdef PLCOM_DEBUG 1697 1.2.2.2 thorpej if (plcom_debug) 1698 1.2.2.2 thorpej plcomstatus(sc, "plcom_stsoft"); 1699 1.2.2.2 thorpej #endif 1700 1.2.2.2 thorpej } 1701 1.2.2.2 thorpej 1702 1.2.2.2 thorpej #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 1703 1.2.2.2 thorpej void 1704 1.2.2.2 thorpej plcomsoft(void *arg) 1705 1.2.2.2 thorpej { 1706 1.2.2.2 thorpej struct plcom_softc *sc = arg; 1707 1.2.2.2 thorpej struct tty *tp; 1708 1.2.2.2 thorpej 1709 1.2.2.2 thorpej if (PLCOM_ISALIVE(sc) == 0) 1710 1.2.2.2 thorpej return; 1711 1.2.2.2 thorpej 1712 1.2.2.2 thorpej { 1713 1.2.2.2 thorpej #else 1714 1.2.2.2 thorpej void 1715 1.2.2.2 thorpej #ifndef __NO_SOFT_SERIAL_INTERRUPT 1716 1.2.2.2 thorpej plcomsoft(void) 1717 1.2.2.2 thorpej #else 1718 1.2.2.2 thorpej plcomsoft(void *arg) 1719 1.2.2.2 thorpej #endif 1720 1.2.2.2 thorpej { 1721 1.2.2.2 thorpej struct plcom_softc *sc; 1722 1.2.2.2 thorpej struct tty *tp; 1723 1.2.2.2 thorpej int unit; 1724 1.2.2.2 thorpej #ifdef __NO_SOFT_SERIAL_INTERRUPT 1725 1.2.2.2 thorpej int s; 1726 1.2.2.2 thorpej 1727 1.2.2.2 thorpej s = splsoftserial(); 1728 1.2.2.2 thorpej plcom_softintr_scheduled = 0; 1729 1.2.2.2 thorpej #endif 1730 1.2.2.2 thorpej 1731 1.2.2.2 thorpej for (unit = 0; unit < plcom_cd.cd_ndevs; unit++) { 1732 1.2.2.2 thorpej sc = device_lookup(&plcom_cd, unit); 1733 1.2.2.2 thorpej if (sc == NULL || !ISSET(sc->sc_hwflags, PLCOM_HW_DEV_OK)) 1734 1.2.2.2 thorpej continue; 1735 1.2.2.2 thorpej 1736 1.2.2.2 thorpej if (PLCOM_ISALIVE(sc) == 0) 1737 1.2.2.2 thorpej continue; 1738 1.2.2.2 thorpej 1739 1.2.2.2 thorpej tp = sc->sc_tty; 1740 1.2.2.2 thorpej if (tp == NULL) 1741 1.2.2.2 thorpej continue; 1742 1.2.2.2 thorpej if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) 1743 1.2.2.2 thorpej continue; 1744 1.2.2.2 thorpej #endif 1745 1.2.2.2 thorpej tp = sc->sc_tty; 1746 1.2.2.2 thorpej 1747 1.2.2.2 thorpej if (sc->sc_rx_ready) { 1748 1.2.2.2 thorpej sc->sc_rx_ready = 0; 1749 1.2.2.2 thorpej plcom_rxsoft(sc, tp); 1750 1.2.2.2 thorpej } 1751 1.2.2.2 thorpej 1752 1.2.2.2 thorpej if (sc->sc_st_check) { 1753 1.2.2.2 thorpej sc->sc_st_check = 0; 1754 1.2.2.2 thorpej plcom_stsoft(sc, tp); 1755 1.2.2.2 thorpej } 1756 1.2.2.2 thorpej 1757 1.2.2.2 thorpej if (sc->sc_tx_done) { 1758 1.2.2.2 thorpej sc->sc_tx_done = 0; 1759 1.2.2.2 thorpej plcom_txsoft(sc, tp); 1760 1.2.2.2 thorpej } 1761 1.2.2.2 thorpej } 1762 1.2.2.2 thorpej 1763 1.2.2.2 thorpej #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS 1764 1.2.2.2 thorpej #ifdef __NO_SOFT_SERIAL_INTERRUPT 1765 1.2.2.2 thorpej splx(s); 1766 1.2.2.2 thorpej #endif 1767 1.2.2.2 thorpej #endif 1768 1.2.2.2 thorpej } 1769 1.2.2.2 thorpej 1770 1.2.2.2 thorpej #ifdef __ALIGN_BRACKET_LEVEL_FOR_CTAGS 1771 1.2.2.2 thorpej /* there has got to be a better way to do plcomsoft() */ 1772 1.2.2.2 thorpej }} 1773 1.2.2.2 thorpej #endif 1774 1.2.2.2 thorpej 1775 1.2.2.2 thorpej int 1776 1.2.2.2 thorpej plcomintr(void *arg) 1777 1.2.2.2 thorpej { 1778 1.2.2.2 thorpej struct plcom_softc *sc = arg; 1779 1.2.2.2 thorpej bus_space_tag_t iot = sc->sc_iot; 1780 1.2.2.2 thorpej bus_space_handle_t ioh = sc->sc_ioh; 1781 1.2.2.2 thorpej u_char *put, *end; 1782 1.2.2.2 thorpej u_int cc; 1783 1.2.2.2 thorpej u_char rsr, iir; 1784 1.2.2.2 thorpej 1785 1.2.2.2 thorpej if (PLCOM_ISALIVE(sc) == 0) 1786 1.2.2.2 thorpej return 0; 1787 1.2.2.2 thorpej 1788 1.2.2.2 thorpej PLCOM_LOCK(sc); 1789 1.2.2.2 thorpej iir = bus_space_read_1(iot, ioh, plcom_iir); 1790 1.2.2.2 thorpej if (! ISSET(iir, IIR_IMASK)) { 1791 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 1792 1.2.2.2 thorpej return 0; 1793 1.2.2.2 thorpej } 1794 1.2.2.2 thorpej 1795 1.2.2.2 thorpej end = sc->sc_ebuf; 1796 1.2.2.2 thorpej put = sc->sc_rbput; 1797 1.2.2.2 thorpej cc = sc->sc_rbavail; 1798 1.2.2.2 thorpej 1799 1.2.2.2 thorpej do { 1800 1.2.2.2 thorpej u_char msr, delta, fr; 1801 1.2.2.2 thorpej 1802 1.2.2.2 thorpej fr = bus_space_read_1(iot, ioh, plcom_fr); 1803 1.2.2.2 thorpej 1804 1.2.2.2 thorpej if (!ISSET(fr, FR_RXFE) && 1805 1.2.2.2 thorpej !ISSET(sc->sc_rx_flags, RX_IBUF_OVERFLOWED)) { 1806 1.2.2.2 thorpej while (cc > 0) { 1807 1.2.2.2 thorpej int cn_trapped = 0; 1808 1.2.2.2 thorpej put[0] = bus_space_read_1(iot, ioh, 1809 1.2.2.2 thorpej plcom_dr); 1810 1.2.2.2 thorpej rsr = bus_space_read_1(iot, ioh, plcom_rsr); 1811 1.2.2.2 thorpej /* Clear any error status. */ 1812 1.2.2.2 thorpej if (ISSET(rsr, 1813 1.2.2.2 thorpej (RSR_BE | RSR_OE | RSR_PE | RSR_FE))) 1814 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_ecr, 1815 1.2.2.2 thorpej 0); 1816 1.2.2.2 thorpej if (ISSET(rsr, RSR_BE)) { 1817 1.2.2.2 thorpej int cn_trapped = 0; 1818 1.2.2.2 thorpej cn_check_magic(sc->sc_tty->t_dev, 1819 1.2.2.2 thorpej CNC_BREAK, plcom_cnm_state); 1820 1.2.2.2 thorpej if (cn_trapped) 1821 1.2.2.2 thorpej continue; 1822 1.2.2.2 thorpej #if defined(KGDB) 1823 1.2.2.2 thorpej if (ISSET(sc->sc_hwflags, 1824 1.2.2.2 thorpej PLCOM_HW_KGDB)) { 1825 1.2.2.2 thorpej kgdb_connect(1); 1826 1.2.2.2 thorpej continue; 1827 1.2.2.2 thorpej } 1828 1.2.2.2 thorpej #endif 1829 1.2.2.2 thorpej } 1830 1.2.2.2 thorpej 1831 1.2.2.2 thorpej put[1] = rsr; 1832 1.2.2.2 thorpej cn_check_magic(sc->sc_tty->t_dev, 1833 1.2.2.2 thorpej put[0], plcom_cnm_state); 1834 1.2.2.2 thorpej if (cn_trapped) { 1835 1.2.2.2 thorpej fr = bus_space_read_1(iot, ioh, 1836 1.2.2.2 thorpej plcom_fr); 1837 1.2.2.2 thorpej if (ISSET(fr, FR_RXFE)) 1838 1.2.2.2 thorpej break; 1839 1.2.2.2 thorpej 1840 1.2.2.2 thorpej continue; 1841 1.2.2.2 thorpej } 1842 1.2.2.2 thorpej put += 2; 1843 1.2.2.2 thorpej if (put >= end) 1844 1.2.2.2 thorpej put = sc->sc_rbuf; 1845 1.2.2.2 thorpej cc--; 1846 1.2.2.2 thorpej 1847 1.2.2.2 thorpej fr = bus_space_read_1(iot, ioh, plcom_fr); 1848 1.2.2.2 thorpej if (ISSET(fr, FR_RXFE)) 1849 1.2.2.2 thorpej break; 1850 1.2.2.2 thorpej } 1851 1.2.2.2 thorpej 1852 1.2.2.2 thorpej /* 1853 1.2.2.2 thorpej * Current string of incoming characters ended because 1854 1.2.2.2 thorpej * no more data was available or we ran out of space. 1855 1.2.2.2 thorpej * Schedule a receive event if any data was received. 1856 1.2.2.2 thorpej * If we're out of space, turn off receive interrupts. 1857 1.2.2.2 thorpej */ 1858 1.2.2.2 thorpej sc->sc_rbput = put; 1859 1.2.2.2 thorpej sc->sc_rbavail = cc; 1860 1.2.2.2 thorpej if (!ISSET(sc->sc_rx_flags, RX_TTY_OVERFLOWED)) 1861 1.2.2.2 thorpej sc->sc_rx_ready = 1; 1862 1.2.2.2 thorpej 1863 1.2.2.2 thorpej /* 1864 1.2.2.2 thorpej * See if we are in danger of overflowing a buffer. If 1865 1.2.2.2 thorpej * so, use hardware flow control to ease the pressure. 1866 1.2.2.2 thorpej */ 1867 1.2.2.2 thorpej if (!ISSET(sc->sc_rx_flags, RX_IBUF_BLOCKED) && 1868 1.2.2.2 thorpej cc < sc->sc_r_hiwat) { 1869 1.2.2.2 thorpej SET(sc->sc_rx_flags, RX_IBUF_BLOCKED); 1870 1.2.2.2 thorpej plcom_hwiflow(sc); 1871 1.2.2.2 thorpej } 1872 1.2.2.2 thorpej 1873 1.2.2.2 thorpej /* 1874 1.2.2.2 thorpej * If we're out of space, disable receive interrupts 1875 1.2.2.2 thorpej * until the queue has drained a bit. 1876 1.2.2.2 thorpej */ 1877 1.2.2.2 thorpej if (!cc) { 1878 1.2.2.2 thorpej SET(sc->sc_rx_flags, RX_IBUF_OVERFLOWED); 1879 1.2.2.2 thorpej CLR(sc->sc_cr, CR_RIE | CR_RTIE); 1880 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, 1881 1.2.2.2 thorpej sc->sc_cr); 1882 1.2.2.2 thorpej } 1883 1.2.2.2 thorpej } else { 1884 1.2.2.2 thorpej if (ISSET(iir, IIR_RIS)) { 1885 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, 0); 1886 1.2.2.2 thorpej delay(10); 1887 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, 1888 1.2.2.2 thorpej sc->sc_cr); 1889 1.2.2.2 thorpej continue; 1890 1.2.2.2 thorpej } 1891 1.2.2.2 thorpej } 1892 1.2.2.2 thorpej 1893 1.2.2.2 thorpej msr = bus_space_read_1(iot, ioh, plcom_fr); 1894 1.2.2.2 thorpej delta = msr ^ sc->sc_msr; 1895 1.2.2.2 thorpej sc->sc_msr = msr; 1896 1.2.2.2 thorpej /* Clear any pending modem status interrupt. */ 1897 1.2.2.2 thorpej if (iir & IIR_MIS) 1898 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_icr, 0); 1899 1.2.2.2 thorpej /* 1900 1.2.2.2 thorpej * Pulse-per-second (PSS) signals on edge of DCD? 1901 1.2.2.2 thorpej * Process these even if line discipline is ignoring DCD. 1902 1.2.2.2 thorpej */ 1903 1.2.2.2 thorpej if (delta & sc->sc_ppsmask) { 1904 1.2.2.2 thorpej struct timeval tv; 1905 1.2.2.2 thorpej if ((msr & sc->sc_ppsmask) == sc->sc_ppsassert) { 1906 1.2.2.2 thorpej /* XXX nanotime() */ 1907 1.2.2.2 thorpej microtime(&tv); 1908 1.2.2.2 thorpej TIMEVAL_TO_TIMESPEC(&tv, 1909 1.2.2.2 thorpej &sc->ppsinfo.assert_timestamp); 1910 1.2.2.2 thorpej if (sc->ppsparam.mode & PPS_OFFSETASSERT) { 1911 1.2.2.2 thorpej timespecadd(&sc->ppsinfo.assert_timestamp, 1912 1.2.2.2 thorpej &sc->ppsparam.assert_offset, 1913 1.2.2.2 thorpej &sc->ppsinfo.assert_timestamp); 1914 1.2.2.2 thorpej } 1915 1.2.2.2 thorpej 1916 1.2.2.2 thorpej #ifdef PPS_SYNC 1917 1.2.2.2 thorpej if (sc->ppsparam.mode & PPS_HARDPPSONASSERT) 1918 1.2.2.2 thorpej hardpps(&tv, tv.tv_usec); 1919 1.2.2.2 thorpej #endif 1920 1.2.2.2 thorpej sc->ppsinfo.assert_sequence++; 1921 1.2.2.2 thorpej sc->ppsinfo.current_mode = sc->ppsparam.mode; 1922 1.2.2.2 thorpej 1923 1.2.2.2 thorpej } else if ((msr & sc->sc_ppsmask) == sc->sc_ppsclear) { 1924 1.2.2.2 thorpej /* XXX nanotime() */ 1925 1.2.2.2 thorpej microtime(&tv); 1926 1.2.2.2 thorpej TIMEVAL_TO_TIMESPEC(&tv, 1927 1.2.2.2 thorpej &sc->ppsinfo.clear_timestamp); 1928 1.2.2.2 thorpej if (sc->ppsparam.mode & PPS_OFFSETCLEAR) { 1929 1.2.2.2 thorpej timespecadd(&sc->ppsinfo.clear_timestamp, 1930 1.2.2.2 thorpej &sc->ppsparam.clear_offset, 1931 1.2.2.2 thorpej &sc->ppsinfo.clear_timestamp); 1932 1.2.2.2 thorpej } 1933 1.2.2.2 thorpej 1934 1.2.2.2 thorpej #ifdef PPS_SYNC 1935 1.2.2.2 thorpej if (sc->ppsparam.mode & PPS_HARDPPSONCLEAR) 1936 1.2.2.2 thorpej hardpps(&tv, tv.tv_usec); 1937 1.2.2.2 thorpej #endif 1938 1.2.2.2 thorpej sc->ppsinfo.clear_sequence++; 1939 1.2.2.2 thorpej sc->ppsinfo.current_mode = sc->ppsparam.mode; 1940 1.2.2.2 thorpej } 1941 1.2.2.2 thorpej } 1942 1.2.2.2 thorpej 1943 1.2.2.2 thorpej /* 1944 1.2.2.2 thorpej * Process normal status changes 1945 1.2.2.2 thorpej */ 1946 1.2.2.2 thorpej if (ISSET(delta, sc->sc_msr_mask)) { 1947 1.2.2.2 thorpej SET(sc->sc_msr_delta, delta); 1948 1.2.2.2 thorpej 1949 1.2.2.2 thorpej /* 1950 1.2.2.2 thorpej * Stop output immediately if we lose the output 1951 1.2.2.2 thorpej * flow control signal or carrier detect. 1952 1.2.2.2 thorpej */ 1953 1.2.2.2 thorpej if (ISSET(~msr, sc->sc_msr_mask)) { 1954 1.2.2.2 thorpej sc->sc_tbc = 0; 1955 1.2.2.2 thorpej sc->sc_heldtbc = 0; 1956 1.2.2.2 thorpej #ifdef PLCOM_DEBUG 1957 1.2.2.2 thorpej if (plcom_debug) 1958 1.2.2.2 thorpej plcomstatus(sc, "plcomintr "); 1959 1.2.2.2 thorpej #endif 1960 1.2.2.2 thorpej } 1961 1.2.2.2 thorpej 1962 1.2.2.2 thorpej sc->sc_st_check = 1; 1963 1.2.2.2 thorpej } 1964 1.2.2.2 thorpej 1965 1.2.2.2 thorpej /* 1966 1.2.2.2 thorpej * Done handling any receive interrupts. See if data 1967 1.2.2.2 thorpej * can be * transmitted as well. Schedule tx done 1968 1.2.2.2 thorpej * event if no data left * and tty was marked busy. 1969 1.2.2.2 thorpej */ 1970 1.2.2.2 thorpej if (ISSET(iir, IIR_TIS)) { 1971 1.2.2.2 thorpej /* 1972 1.2.2.2 thorpej * If we've delayed a parameter change, do it 1973 1.2.2.2 thorpej * now, and restart * output. 1974 1.2.2.2 thorpej */ 1975 1.2.2.2 thorpej if (sc->sc_heldchange) { 1976 1.2.2.2 thorpej plcom_loadchannelregs(sc); 1977 1.2.2.2 thorpej sc->sc_heldchange = 0; 1978 1.2.2.2 thorpej sc->sc_tbc = sc->sc_heldtbc; 1979 1.2.2.2 thorpej sc->sc_heldtbc = 0; 1980 1.2.2.2 thorpej } 1981 1.2.2.2 thorpej 1982 1.2.2.2 thorpej /* 1983 1.2.2.2 thorpej * Output the next chunk of the contiguous 1984 1.2.2.2 thorpej * buffer, if any. 1985 1.2.2.2 thorpej */ 1986 1.2.2.2 thorpej if (sc->sc_tbc > 0) { 1987 1.2.2.2 thorpej int n; 1988 1.2.2.2 thorpej 1989 1.2.2.2 thorpej n = sc->sc_tbc; 1990 1.2.2.2 thorpej if (n > sc->sc_fifolen) 1991 1.2.2.2 thorpej n = sc->sc_fifolen; 1992 1.2.2.2 thorpej bus_space_write_multi_1(iot, ioh, plcom_dr, 1993 1.2.2.2 thorpej sc->sc_tba, n); 1994 1.2.2.2 thorpej sc->sc_tbc -= n; 1995 1.2.2.2 thorpej sc->sc_tba += n; 1996 1.2.2.2 thorpej } else { 1997 1.2.2.2 thorpej /* 1998 1.2.2.2 thorpej * Disable transmit plcompletion 1999 1.2.2.2 thorpej * interrupts if necessary. 2000 1.2.2.2 thorpej */ 2001 1.2.2.2 thorpej if (ISSET(sc->sc_cr, CR_TIE)) { 2002 1.2.2.2 thorpej CLR(sc->sc_cr, CR_TIE); 2003 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, 2004 1.2.2.2 thorpej sc->sc_cr); 2005 1.2.2.2 thorpej } 2006 1.2.2.2 thorpej if (sc->sc_tx_busy) { 2007 1.2.2.2 thorpej sc->sc_tx_busy = 0; 2008 1.2.2.2 thorpej sc->sc_tx_done = 1; 2009 1.2.2.2 thorpej } 2010 1.2.2.2 thorpej } 2011 1.2.2.2 thorpej } 2012 1.2.2.2 thorpej } while (ISSET((iir = bus_space_read_1(iot, ioh, plcom_iir)), 2013 1.2.2.2 thorpej IIR_IMASK)); 2014 1.2.2.2 thorpej 2015 1.2.2.2 thorpej PLCOM_UNLOCK(sc); 2016 1.2.2.2 thorpej 2017 1.2.2.2 thorpej /* Wake up the poller. */ 2018 1.2.2.2 thorpej #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS 2019 1.2.2.2 thorpej softintr_schedule(sc->sc_si); 2020 1.2.2.2 thorpej #else 2021 1.2.2.2 thorpej #ifndef __NO_SOFT_SERIAL_INTERRUPT 2022 1.2.2.2 thorpej setsoftserial(); 2023 1.2.2.2 thorpej #else 2024 1.2.2.2 thorpej if (!plcom_softintr_scheduled) { 2025 1.2.2.2 thorpej plcom_softintr_scheduled = 1; 2026 1.2.2.2 thorpej callout_reset(&plcomsoft_callout, 1, plcomsoft, NULL); 2027 1.2.2.2 thorpej } 2028 1.2.2.2 thorpej #endif 2029 1.2.2.2 thorpej #endif 2030 1.2.2.2 thorpej 2031 1.2.2.2 thorpej #if NRND > 0 && defined(RND_COM) 2032 1.2.2.2 thorpej rnd_add_uint32(&sc->rnd_source, iir | rsr); 2033 1.2.2.2 thorpej #endif 2034 1.2.2.2 thorpej 2035 1.2.2.2 thorpej return 1; 2036 1.2.2.2 thorpej } 2037 1.2.2.2 thorpej 2038 1.2.2.2 thorpej /* 2039 1.2.2.2 thorpej * The following functions are polled getc and putc routines, shared 2040 1.2.2.2 thorpej * by the console and kgdb glue. 2041 1.2.2.2 thorpej * 2042 1.2.2.2 thorpej * The read-ahead code is so that you can detect pending in-band 2043 1.2.2.2 thorpej * cn_magic in polled mode while doing output rather than having to 2044 1.2.2.2 thorpej * wait until the kernel decides it needs input. 2045 1.2.2.2 thorpej */ 2046 1.2.2.2 thorpej 2047 1.2.2.2 thorpej #define MAX_READAHEAD 20 2048 1.2.2.2 thorpej static int plcom_readahead[MAX_READAHEAD]; 2049 1.2.2.2 thorpej static int plcom_readaheadcount = 0; 2050 1.2.2.2 thorpej 2051 1.2.2.2 thorpej int 2052 1.2.2.2 thorpej plcom_common_getc(dev_t dev, bus_space_tag_t iot, bus_space_handle_t ioh) 2053 1.2.2.2 thorpej { 2054 1.2.2.2 thorpej int s = splserial(); 2055 1.2.2.2 thorpej u_char stat, c; 2056 1.2.2.2 thorpej 2057 1.2.2.2 thorpej /* got a character from reading things earlier */ 2058 1.2.2.2 thorpej if (plcom_readaheadcount > 0) { 2059 1.2.2.2 thorpej int i; 2060 1.2.2.2 thorpej 2061 1.2.2.2 thorpej c = plcom_readahead[0]; 2062 1.2.2.2 thorpej for (i = 1; i < plcom_readaheadcount; i++) { 2063 1.2.2.2 thorpej plcom_readahead[i-1] = plcom_readahead[i]; 2064 1.2.2.2 thorpej } 2065 1.2.2.2 thorpej plcom_readaheadcount--; 2066 1.2.2.2 thorpej splx(s); 2067 1.2.2.2 thorpej return c; 2068 1.2.2.2 thorpej } 2069 1.2.2.2 thorpej 2070 1.2.2.2 thorpej /* block until a character becomes available */ 2071 1.2.2.2 thorpej while (ISSET(stat = bus_space_read_1(iot, ioh, plcom_fr), FR_RXFE)) 2072 1.2.2.2 thorpej ; 2073 1.2.2.2 thorpej 2074 1.2.2.2 thorpej c = bus_space_read_1(iot, ioh, plcom_dr); 2075 1.2.2.2 thorpej stat = bus_space_read_1(iot, ioh, plcom_iir); 2076 1.2.2.2 thorpej { 2077 1.2.2.2 thorpej int cn_trapped = 0; /* unused */ 2078 1.2.2.2 thorpej #ifdef DDB 2079 1.2.2.2 thorpej extern int db_active; 2080 1.2.2.2 thorpej if (!db_active) 2081 1.2.2.2 thorpej #endif 2082 1.2.2.2 thorpej cn_check_magic(dev, c, plcom_cnm_state); 2083 1.2.2.2 thorpej } 2084 1.2.2.2 thorpej splx(s); 2085 1.2.2.2 thorpej return c; 2086 1.2.2.2 thorpej } 2087 1.2.2.2 thorpej 2088 1.2.2.2 thorpej void 2089 1.2.2.2 thorpej plcom_common_putc(dev_t dev, bus_space_tag_t iot, bus_space_handle_t ioh, 2090 1.2.2.2 thorpej int c) 2091 1.2.2.2 thorpej { 2092 1.2.2.2 thorpej int s = splserial(); 2093 1.2.2.2 thorpej int timo; 2094 1.2.2.2 thorpej 2095 1.2.2.2 thorpej int cin, stat; 2096 1.2.2.2 thorpej if (plcom_readaheadcount < MAX_READAHEAD 2097 1.2.2.2 thorpej && !ISSET(stat = bus_space_read_1(iot, ioh, plcom_fr), FR_RXFE)) { 2098 1.2.2.2 thorpej int cn_trapped = 0; 2099 1.2.2.2 thorpej cin = bus_space_read_1(iot, ioh, plcom_dr); 2100 1.2.2.2 thorpej stat = bus_space_read_1(iot, ioh, plcom_iir); 2101 1.2.2.2 thorpej cn_check_magic(dev, cin, plcom_cnm_state); 2102 1.2.2.2 thorpej plcom_readahead[plcom_readaheadcount++] = cin; 2103 1.2.2.2 thorpej } 2104 1.2.2.2 thorpej 2105 1.2.2.2 thorpej /* wait for any pending transmission to finish */ 2106 1.2.2.2 thorpej timo = 150000; 2107 1.2.2.2 thorpej while (!ISSET(bus_space_read_1(iot, ioh, plcom_fr), FR_TXFE) && --timo) 2108 1.2.2.2 thorpej continue; 2109 1.2.2.2 thorpej 2110 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_dr, c); 2111 1.2.2.2 thorpej PLCOM_BARRIER(iot, ioh, BR | BW); 2112 1.2.2.2 thorpej 2113 1.2.2.2 thorpej /* wait for this transmission to complete */ 2114 1.2.2.2 thorpej timo = 1500000; 2115 1.2.2.2 thorpej while (!ISSET(bus_space_read_1(iot, ioh, plcom_fr), FR_TXFE) && --timo) 2116 1.2.2.2 thorpej continue; 2117 1.2.2.2 thorpej 2118 1.2.2.2 thorpej splx(s); 2119 1.2.2.2 thorpej } 2120 1.2.2.2 thorpej 2121 1.2.2.2 thorpej /* 2122 1.2.2.2 thorpej * Initialize UART for use as console or KGDB line. 2123 1.2.2.2 thorpej */ 2124 1.2.2.2 thorpej int 2125 1.2.2.2 thorpej plcominit(bus_space_tag_t iot, bus_addr_t iobase, int rate, int frequency, 2126 1.2.2.2 thorpej tcflag_t cflag, bus_space_handle_t *iohp) 2127 1.2.2.2 thorpej { 2128 1.2.2.2 thorpej bus_space_handle_t ioh; 2129 1.2.2.2 thorpej 2130 1.2.2.2 thorpej if (bus_space_map(iot, iobase, PLCOM_UART_SIZE, 0, &ioh)) 2131 1.2.2.2 thorpej return ENOMEM; /* ??? */ 2132 1.2.2.2 thorpej 2133 1.2.2.2 thorpej rate = plcomspeed(rate, frequency); 2134 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, 0); 2135 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_dlbl, rate); 2136 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_dlbh, rate >> 8); 2137 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_lcr, cflag2lcr(cflag) | LCR_FEN); 2138 1.2.2.2 thorpej bus_space_write_1(iot, ioh, plcom_cr, CR_UARTEN); 2139 1.2.2.2 thorpej 2140 1.2.2.2 thorpej #if 0 2141 1.2.2.2 thorpej /* Ought to do something like this, but we have no sc to 2142 1.2.2.2 thorpej dereference. */ 2143 1.2.2.2 thorpej sc->sc_set_mcr(sc->sc_set_mcr_arg, sc->sc_dev.dv_unit, 2144 1.2.2.2 thorpej MCR_DTR | MCR_RTS); 2145 1.2.2.2 thorpej #endif 2146 1.2.2.2 thorpej 2147 1.2.2.2 thorpej *iohp = ioh; 2148 1.2.2.2 thorpej return 0; 2149 1.2.2.2 thorpej } 2150 1.2.2.2 thorpej 2151 1.2.2.2 thorpej /* 2152 1.2.2.2 thorpej * Following are all routines needed for PLCOM to act as console 2153 1.2.2.2 thorpej */ 2154 1.2.2.2 thorpej struct consdev plcomcons = { 2155 1.2.2.2 thorpej NULL, NULL, plcomcngetc, plcomcnputc, plcomcnpollc, NULL, 2156 1.2.2.2 thorpej NODEV, CN_NORMAL 2157 1.2.2.2 thorpej }; 2158 1.2.2.2 thorpej 2159 1.2.2.2 thorpej 2160 1.2.2.2 thorpej int 2161 1.2.2.2 thorpej plcomcnattach(bus_space_tag_t iot, bus_addr_t iobase, int rate, int frequency, 2162 1.2.2.2 thorpej tcflag_t cflag, int unit) 2163 1.2.2.2 thorpej { 2164 1.2.2.2 thorpej int res; 2165 1.2.2.2 thorpej 2166 1.2.2.2 thorpej res = plcominit(iot, iobase, rate, frequency, cflag, &plcomconsioh); 2167 1.2.2.2 thorpej if (res) 2168 1.2.2.2 thorpej return res; 2169 1.2.2.2 thorpej 2170 1.2.2.2 thorpej cn_tab = &plcomcons; 2171 1.2.2.2 thorpej cn_init_magic(&plcom_cnm_state); 2172 1.2.2.2 thorpej cn_set_magic("\047\001"); /* default magic is BREAK */ 2173 1.2.2.2 thorpej 2174 1.2.2.2 thorpej plcomconstag = iot; 2175 1.2.2.2 thorpej plcomconsunit = unit; 2176 1.2.2.2 thorpej plcomconsrate = rate; 2177 1.2.2.2 thorpej plcomconscflag = cflag; 2178 1.2.2.2 thorpej 2179 1.2.2.2 thorpej return 0; 2180 1.2.2.2 thorpej } 2181 1.2.2.2 thorpej 2182 1.2.2.2 thorpej void 2183 1.2.2.2 thorpej plcomcndetach(void) 2184 1.2.2.2 thorpej { 2185 1.2.2.2 thorpej bus_space_unmap(plcomconstag, plcomconsioh, PLCOM_UART_SIZE); 2186 1.2.2.2 thorpej plcomconstag = NULL; 2187 1.2.2.2 thorpej 2188 1.2.2.2 thorpej cn_tab = NULL; 2189 1.2.2.2 thorpej } 2190 1.2.2.2 thorpej 2191 1.2.2.2 thorpej int 2192 1.2.2.2 thorpej plcomcngetc(dev_t dev) 2193 1.2.2.2 thorpej { 2194 1.2.2.2 thorpej return plcom_common_getc(dev, plcomconstag, plcomconsioh); 2195 1.2.2.2 thorpej } 2196 1.2.2.2 thorpej 2197 1.2.2.2 thorpej /* 2198 1.2.2.2 thorpej * Console kernel output character routine. 2199 1.2.2.2 thorpej */ 2200 1.2.2.2 thorpej void 2201 1.2.2.2 thorpej plcomcnputc(dev_t dev, int c) 2202 1.2.2.2 thorpej { 2203 1.2.2.2 thorpej plcom_common_putc(dev, plcomconstag, plcomconsioh, c); 2204 1.2.2.2 thorpej } 2205 1.2.2.2 thorpej 2206 1.2.2.2 thorpej void 2207 1.2.2.2 thorpej plcomcnpollc(dev_t dev, int on) 2208 1.2.2.2 thorpej { 2209 1.2.2.2 thorpej 2210 1.2.2.2 thorpej } 2211 1.2.2.2 thorpej 2212 1.2.2.2 thorpej #ifdef KGDB 2213 1.2.2.2 thorpej int 2214 1.2.2.2 thorpej plcom_kgdb_attach(bus_space_tag_t iot, bus_addr_t iobase, int rate, 2215 1.2.2.2 thorpej int frequency, tcflag_t cflag, int unit) 2216 1.2.2.2 thorpej { 2217 1.2.2.2 thorpej int res; 2218 1.2.2.2 thorpej 2219 1.2.2.2 thorpej if (iot == plcomconstag && iobase == plcomconsunit) 2220 1.2.2.2 thorpej return EBUSY; /* cannot share with console */ 2221 1.2.2.2 thorpej 2222 1.2.2.2 thorpej res = plcominit(iot, iobase, rate, frequency, cflag, &plcom_kgdb_ioh); 2223 1.2.2.2 thorpej if (res) 2224 1.2.2.2 thorpej return res; 2225 1.2.2.2 thorpej 2226 1.2.2.2 thorpej kgdb_attach(plcom_kgdb_getc, plcom_kgdb_putc, NULL); 2227 1.2.2.2 thorpej kgdb_dev = 123; /* unneeded, only to satisfy some tests */ 2228 1.2.2.2 thorpej 2229 1.2.2.2 thorpej plcom_kgdb_iot = iot; 2230 1.2.2.2 thorpej plcom_kgdb_unit = unit; 2231 1.2.2.2 thorpej 2232 1.2.2.2 thorpej return 0; 2233 1.2.2.2 thorpej } 2234 1.2.2.2 thorpej 2235 1.2.2.2 thorpej /* ARGSUSED */ 2236 1.2.2.2 thorpej int 2237 1.2.2.2 thorpej plcom_kgdb_getc(void *arg) 2238 1.2.2.2 thorpej { 2239 1.2.2.2 thorpej return plcom_common_getc(NODEV, plcom_kgdb_iot, plcom_kgdb_ioh); 2240 1.2.2.2 thorpej } 2241 1.2.2.2 thorpej 2242 1.2.2.2 thorpej /* ARGSUSED */ 2243 1.2.2.2 thorpej void 2244 1.2.2.2 thorpej plcom_kgdb_putc(void *arg, int c) 2245 1.2.2.2 thorpej { 2246 1.2.2.2 thorpej plcom_common_putc(NODEV, plcom_kgdb_iot, plcom_kgdb_ioh, c); 2247 1.2.2.2 thorpej } 2248 1.2.2.2 thorpej #endif /* KGDB */ 2249 1.2.2.2 thorpej 2250 1.2.2.2 thorpej /* helper function to identify the plcom ports used by 2251 1.2.2.2 thorpej console or KGDB (and not yet autoconf attached) */ 2252 1.2.2.2 thorpej int 2253 1.2.2.2 thorpej plcom_is_console(bus_space_tag_t iot, int unit, 2254 1.2.2.2 thorpej bus_space_handle_t *ioh) 2255 1.2.2.2 thorpej { 2256 1.2.2.2 thorpej bus_space_handle_t help; 2257 1.2.2.2 thorpej 2258 1.2.2.2 thorpej if (!plcomconsattached && 2259 1.2.2.2 thorpej iot == plcomconstag && unit == plcomconsunit) 2260 1.2.2.2 thorpej help = plcomconsioh; 2261 1.2.2.2 thorpej #ifdef KGDB 2262 1.2.2.2 thorpej else if (!plcom_kgdb_attached && 2263 1.2.2.2 thorpej iot == plcom_kgdb_iot && unit == plcom_kgdb_unit) 2264 1.2.2.2 thorpej help = plcom_kgdb_ioh; 2265 1.2.2.2 thorpej #endif 2266 1.2.2.2 thorpej else 2267 1.2.2.2 thorpej return 0; 2268 1.2.2.2 thorpej 2269 1.2.2.2 thorpej if (ioh) 2270 1.2.2.2 thorpej *ioh = help; 2271 1.2.2.2 thorpej return 1; 2272 1.2.2.2 thorpej } 2273
Indexes created Tue Oct 21 08:09:48 GMT 2025