sio.c revision 45830
1/*- 2 * Copyright (c) 1991 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $Id: sio.c,v 1.87 1999/04/19 11:11:01 kato Exp $ 34 * from: @(#)com.c 7.5 (Berkeley) 5/16/91 35 * from: i386/isa sio.c,v 1.234 36 */ 37 38#include "opt_comconsole.h" 39#include "opt_compat.h" 40#include "opt_ddb.h" 41#include "opt_devfs.h" 42/* #include "opt_sio.h" */ 43#include "sio.h" 44/* #include "pnp.h" */ 45#define NPNP 0 46 47/* 48 * Serial driver, based on 386BSD-0.1 com driver. 49 * Mostly rewritten to use pseudo-DMA. 50 * Works for National Semiconductor NS8250-NS16550AF UARTs. 51 * COM driver, based on HP dca driver. 52 * 53 * Changes for PC-Card integration: 54 * - Added PC-Card driver table and handlers 55 */ 56/*=============================================================== 57 * 386BSD(98),FreeBSD-1.1x(98) com driver. 58 * ----- 59 * modified for PC9801 by M.Ishii 60 * Kyoto University Microcomputer Club (KMC) 61 * Chou "TEFUTEFU" Hirotomi 62 * Kyoto Univ. the faculty of medicine 63 *=============================================================== 64 * FreeBSD-2.0.1(98) sio driver. 65 * ----- 66 * modified for pc98 Internal i8251 and MICRO CORE MC16550II 67 * T.Koike(hfc01340@niftyserve.or.jp) 68 * implement kernel device configuration 69 * aizu@orient.center.nitech.ac.jp 70 * 71 * Notes. 72 * ----- 73 * PC98 localization based on 386BSD(98) com driver. Using its PC98 local 74 * functions. 75 * This driver is under debugging,has bugs. 76 * 77 * 1) config 78 * options COM_MULTIPORT #if using MC16550II 79 * device sio0 at nec? port 0x30 tty irq 4 #internal 80 * device sio1 at nec? port 0xd2 tty irq 5 flags 0x101 #mc1 81 * device sio2 at nec? port 0x8d2 tty flags 0x101 #mc2 82 * # ~~~~~iobase ~~multi port flag 83 * # ~ master device is sio1 84 * 2) device 85 * cd /dev; MAKEDEV ttyd0 ttyd1 .. 86 * 3) /etc/rc.serial 87 * 57600bps is too fast for sio0(internal8251) 88 * my ex. 89 * #set default speed 9600 90 * modem() 91 * : 92 * stty </dev/ttyid$i crtscts 9600 93 * : # ~~~~ default speed(can change after init.) 94 * modem 0 1 2 95 * 4) COMCONSOLE 96 * not changed. 97 * 5) PC9861K,PIO9032B,B98_01 98 * not tested. 99 */ 100/* 101 * modified for AIWA B98-01 102 * by T.Hatanou <hatanou@yasuda.comm.waseda.ac.jp> last update: 15 Sep.1995 103 * 104 * How to configure... 105 * # options COM_MULTIPORT # support for MICROCORE MC16550II 106 * ... comment-out this line, which will conflict with B98_01. 107 * options "B98_01" # support for AIWA B98-01 108 * device sio1 at nec? port 0x00d1 tty irq ? 109 * device sio2 at nec? port 0x00d5 tty irq ? 110 * ... you can leave these lines `irq ?', irq will be autodetected. 111 */ 112/* 113 * Modified by Y.Takahashi of Kogakuin University. 114 */ 115 116#ifdef PC98 117#define COM_IF_INTERNAL 0x00 118#define COM_IF_PC9861K_1 0x01 119#define COM_IF_PC9861K_2 0x02 120#define COM_IF_IND_SS_1 0x03 121#define COM_IF_IND_SS_2 0x04 122#define COM_IF_PIO9032B_1 0x05 123#define COM_IF_PIO9032B_2 0x06 124#define COM_IF_B98_01_1 0x07 125#define COM_IF_B98_01_2 0x08 126#define COM_IF_END1 COM_IF_B98_01_2 127#define COM_IF_RSA98 0x10 /* same as COM_IF_NS16550 */ 128#define COM_IF_NS16550 0x11 129#define COM_IF_SECOND_CCU 0x12 /* same as COM_IF_NS16550 */ 130#define COM_IF_MC16550II 0x13 131#define COM_IF_MCRS98 0x14 /* same as COM_IF_MC16550II */ 132#define COM_IF_RSB3000 0x15 133#define COM_IF_RSB384 0x16 134#define COM_IF_MODEM_CARD 0x17 /* same as COM_IF_NS16550 */ 135#define COM_IF_RSA98III 0x18 136#define COM_IF_ESP98 0x19 137#define COM_IF_END2 COM_IF_ESP98 138#endif /* PC98 */ 139 140#include <sys/param.h> 141#include <sys/systm.h> 142#include <sys/reboot.h> 143#include <sys/malloc.h> 144#include <sys/tty.h> 145#include <sys/proc.h> 146#include <sys/module.h> 147#include <sys/conf.h> 148#include <sys/dkstat.h> 149#include <sys/fcntl.h> 150#include <sys/interrupt.h> 151#include <sys/kernel.h> 152#include <sys/syslog.h> 153#include <sys/sysctl.h> 154#include <sys/bus.h> 155#include <machine/bus.h> 156#include <sys/rman.h> 157#ifdef DEVFS 158#include <sys/devfsext.h> 159#endif 160#include <sys/timepps.h> 161 162#ifdef PC98 163#include <pc98/pc98/pc98.h> 164#include <pc98/pc98/pc98_machdep.h> 165#include <i386/isa/ic/i8251.h> 166#else 167#include <isa/isareg.h> 168#endif 169#include <isa/isavar.h> 170#include <machine/lock.h> 171 172#include <machine/clock.h> 173#include <machine/ipl.h> 174#ifndef SMP 175#include <machine/lock.h> 176#endif 177#include <machine/resource.h> 178 179#include <isa/sioreg.h> 180 181#ifdef COM_ESP 182#include <i386/isa/ic/esp.h> 183#endif 184#include <i386/isa/ic/ns16550.h> 185#ifdef PC98 186#include <i386/isa/ic/rsa.h> 187#endif 188 189#if 0 190 191#include "card.h" 192#if NCARD > 0 193#include <sys/module.h> 194#include <pccard/cardinfo.h> 195#include <pccard/slot.h> 196#endif 197 198#if NPNP > 0 199#include <i386/isa/pnp.h> 200#endif 201 202#endif 203 204#ifndef __i386__ 205#define disable_intr() 0 206#define enable_intr() 0 207#endif 208 209#ifdef SMP 210#define disable_intr() COM_DISABLE_INTR() 211#define enable_intr() COM_ENABLE_INTR() 212#endif /* SMP */ 213 214#ifndef EXTRA_SIO 215#if NPNP > 0 216#define EXTRA_SIO MAX_PNP_CARDS 217#else 218#define EXTRA_SIO 0 219#endif 220#endif 221 222#define NSIOTOT (NSIO + EXTRA_SIO) 223 224#define LOTS_OF_EVENTS 64 /* helps separate urgent events from input */ 225 226#define CALLOUT_MASK 0x80 227#define CONTROL_MASK 0x60 228#define CONTROL_INIT_STATE 0x20 229#define CONTROL_LOCK_STATE 0x40 230#define DEV_TO_UNIT(dev) (MINOR_TO_UNIT(minor(dev))) 231#define MINOR_MAGIC_MASK (CALLOUT_MASK | CONTROL_MASK) 232#define MINOR_TO_UNIT(mynor) ((mynor) & ~MINOR_MAGIC_MASK) 233 234#ifdef COM_MULTIPORT 235/* checks in flags for multiport and which is multiport "master chip" 236 * for a given card 237 */ 238#define COM_ISMULTIPORT(flags) ((flags) & 0x01) 239#define COM_MPMASTER(flags) (((flags) >> 8) & 0x0ff) 240#define COM_NOTAST4(flags) ((flags) & 0x04) 241#endif /* COM_MULTIPORT */ 242 243#define COM_CONSOLE(flags) ((flags) & 0x10) 244#define COM_FORCECONSOLE(flags) ((flags) & 0x20) 245#define COM_LLCONSOLE(flags) ((flags) & 0x40) 246#define COM_LOSESOUTINTS(flags) ((flags) & 0x08) 247#define COM_NOFIFO(flags) ((flags) & 0x02) 248#define COM_ST16650A(flags) ((flags) & 0x20000) 249#define COM_C_NOPROBE (0x40000) 250#define COM_NOPROBE(flags) ((flags) & COM_C_NOPROBE) 251#define COM_C_IIR_TXRDYBUG (0x80000) 252#define COM_IIR_TXRDYBUG(flags) ((flags) & COM_C_IIR_TXRDYBUG) 253#define COM_FIFOSIZE(flags) (((flags) & 0xff000000) >> 24) 254 255#ifdef PC98 256#define com_emr com_msr /* Extension mode register for RSB-2000/3000 */ 257#else 258#define com_scr 7 /* scratch register for 16450-16550 (R/W) */ 259#endif 260 261/* 262 * com state bits. 263 * (CS_BUSY | CS_TTGO) and (CS_BUSY | CS_TTGO | CS_ODEVREADY) must be higher 264 * than the other bits so that they can be tested as a group without masking 265 * off the low bits. 266 * 267 * The following com and tty flags correspond closely: 268 * CS_BUSY = TS_BUSY (maintained by comstart(), siopoll() and 269 * siostop()) 270 * CS_TTGO = ~TS_TTSTOP (maintained by comparam() and comstart()) 271 * CS_CTS_OFLOW = CCTS_OFLOW (maintained by comparam()) 272 * CS_RTS_IFLOW = CRTS_IFLOW (maintained by comparam()) 273 * TS_FLUSH is not used. 274 * XXX I think TIOCSETA doesn't clear TS_TTSTOP when it clears IXON. 275 * XXX CS_*FLOW should be CF_*FLOW in com->flags (control flags not state). 276 */ 277#define CS_BUSY 0x80 /* output in progress */ 278#define CS_TTGO 0x40 /* output not stopped by XOFF */ 279#define CS_ODEVREADY 0x20 /* external device h/w ready (CTS) */ 280#define CS_CHECKMSR 1 /* check of MSR scheduled */ 281#define CS_CTS_OFLOW 2 /* use CTS output flow control */ 282#define CS_DTR_OFF 0x10 /* DTR held off */ 283#define CS_ODONE 4 /* output completed */ 284#define CS_RTS_IFLOW 8 /* use RTS input flow control */ 285#define CSE_BUSYCHECK 1 /* siobusycheck() scheduled */ 286 287static char const * const error_desc[] = { 288#define CE_OVERRUN 0 289 "silo overflow", 290#define CE_INTERRUPT_BUF_OVERFLOW 1 291 "interrupt-level buffer overflow", 292#define CE_TTY_BUF_OVERFLOW 2 293 "tty-level buffer overflow", 294}; 295 296#define CE_NTYPES 3 297#define CE_RECORD(com, errnum) (++(com)->delta_error_counts[errnum]) 298 299/* types. XXX - should be elsewhere */ 300typedef u_int Port_t; /* hardware port */ 301typedef u_char bool_t; /* boolean */ 302 303/* queue of linear buffers */ 304struct lbq { 305 u_char *l_head; /* next char to process */ 306 u_char *l_tail; /* one past the last char to process */ 307 struct lbq *l_next; /* next in queue */ 308 bool_t l_queued; /* nonzero if queued */ 309}; 310 311/* com device structure */ 312struct com_s { 313 u_int flags; /* Copy isa device flags */ 314 u_char state; /* miscellaneous flag bits */ 315 bool_t active_out; /* nonzero if the callout device is open */ 316 u_char cfcr_image; /* copy of value written to CFCR */ 317#ifdef COM_ESP 318 bool_t esp; /* is this unit a hayes esp board? */ 319#endif 320 u_char extra_state; /* more flag bits, separate for order trick */ 321 u_char fifo_image; /* copy of value written to FIFO */ 322 bool_t hasfifo; /* nonzero for 16550 UARTs */ 323 bool_t st16650a; /* Is a Startech 16650A or RTS/CTS compat */ 324 bool_t loses_outints; /* nonzero if device loses output interrupts */ 325 u_char mcr_image; /* copy of value written to MCR */ 326#ifdef COM_MULTIPORT 327 bool_t multiport; /* is this unit part of a multiport device? */ 328#endif /* COM_MULTIPORT */ 329 bool_t no_irq; /* nonzero if irq is not attached */ 330 bool_t gone; /* hardware disappeared */ 331 bool_t poll; /* nonzero if polling is required */ 332 bool_t poll_output; /* nonzero if polling for output is required */ 333 int unit; /* unit number */ 334 int dtr_wait; /* time to hold DTR down on close (* 1/hz) */ 335 u_int tx_fifo_size; 336 u_int wopeners; /* # processes waiting for DCD in open() */ 337 338 /* 339 * The high level of the driver never reads status registers directly 340 * because there would be too many side effects to handle conveniently. 341 * Instead, it reads copies of the registers stored here by the 342 * interrupt handler. 343 */ 344 u_char last_modem_status; /* last MSR read by intr handler */ 345 u_char prev_modem_status; /* last MSR handled by high level */ 346 347 u_char hotchar; /* ldisc-specific char to be handled ASAP */ 348 u_char *ibuf; /* start of input buffer */ 349 u_char *ibufend; /* end of input buffer */ 350 u_char *ibufold; /* old input buffer, to be freed */ 351 u_char *ihighwater; /* threshold in input buffer */ 352 u_char *iptr; /* next free spot in input buffer */ 353 int ibufsize; /* size of ibuf (not include error bytes) */ 354 int ierroff; /* offset of error bytes in ibuf */ 355 356 struct lbq obufq; /* head of queue of output buffers */ 357 struct lbq obufs[2]; /* output buffers */ 358 359#ifdef PC98 360 Port_t cmd_port; 361 Port_t sts_port; 362 Port_t in_modem_port; 363 Port_t intr_ctrl_port; 364 int intr_enable; 365 int pc98_prev_modem_status; 366 int pc98_modem_delta; 367 int modem_car_chg_timer; 368 int pc98_prev_siocmd; 369 int pc98_prev_siomod; 370 int modem_checking; 371 int pc98_if_type; 372#endif /* PC98 */ 373 Port_t data_port; /* i/o ports */ 374#ifdef COM_ESP 375 Port_t esp_port; 376#endif 377 Port_t int_id_port; 378 Port_t iobase; 379#ifdef PC98 380 Port_t rsabase; /* iobase address of a I/O-DATA RSA board */ 381#endif 382 Port_t modem_ctl_port; 383 Port_t line_status_port; 384 Port_t modem_status_port; 385 Port_t intr_ctl_port; /* Ports of IIR register */ 386 387 struct tty *tp; /* cross reference */ 388 389 /* Initial state. */ 390 struct termios it_in; /* should be in struct tty */ 391 struct termios it_out; 392 393 /* Lock state. */ 394 struct termios lt_in; /* should be in struct tty */ 395 struct termios lt_out; 396 397 bool_t do_timestamp; 398 bool_t do_dcd_timestamp; 399 struct timeval timestamp; 400 struct timeval dcd_timestamp; 401 struct pps_state pps; 402 403 u_long bytes_in; /* statistics */ 404 u_long bytes_out; 405 u_int delta_error_counts[CE_NTYPES]; 406 u_long error_counts[CE_NTYPES]; 407 408 /* 409 * Data area for output buffers. Someday we should build the output 410 * buffer queue without copying data. 411 */ 412#ifdef PC98 413 int obufsize; 414 u_char *obuf1; 415 u_char *obuf2; 416#else 417 u_char obuf1[256]; 418 u_char obuf2[256]; 419#endif 420#ifdef DEVFS 421 void *devfs_token_ttyd; 422 void *devfs_token_ttyl; 423 void *devfs_token_ttyi; 424 void *devfs_token_cuaa; 425 void *devfs_token_cual; 426 void *devfs_token_cuai; 427#endif 428}; 429 430#ifdef COM_ESP 431static int espattach __P((struct isa_device *isdp, struct com_s *com, 432 Port_t esp_port)); 433#endif 434static int sioattach __P((device_t dev)); 435 436static timeout_t siobusycheck; 437static timeout_t siodtrwakeup; 438static void comhardclose __P((struct com_s *com)); 439static void sioinput __P((struct com_s *com)); 440static void siointr1 __P((struct com_s *com)); 441static void siointr __P((void *arg)); 442static int commctl __P((struct com_s *com, int bits, int how)); 443static int comparam __P((struct tty *tp, struct termios *t)); 444static swihand_t siopoll; 445static int sioprobe __P((device_t dev)); 446static void siosettimeout __P((void)); 447static int siosetwater __P((struct com_s *com, speed_t speed)); 448static void comstart __P((struct tty *tp)); 449static timeout_t comwakeup; 450static void disc_optim __P((struct tty *tp, struct termios *t, 451 struct com_s *com)); 452 453 454static char driver_name[] = "sio"; 455 456/* table and macro for fast conversion from a unit number to its com struct */ 457static devclass_t sio_devclass; 458#define com_addr(unit) ((struct com_s *) \ 459 devclass_get_softc(sio_devclass, unit)) 460 461static device_method_t sio_methods[] = { 462 /* Device interface */ 463 DEVMETHOD(device_probe, sioprobe), 464 DEVMETHOD(device_attach, sioattach), 465 466 { 0, 0 } 467}; 468 469static driver_t sio_driver = { 470 driver_name, 471 sio_methods, 472 DRIVER_TYPE_TTY|DRIVER_TYPE_FAST, 473 sizeof(struct com_s), 474}; 475 476static d_open_t sioopen; 477static d_close_t sioclose; 478static d_read_t sioread; 479static d_write_t siowrite; 480static d_ioctl_t sioioctl; 481static d_stop_t siostop; 482static d_devtotty_t siodevtotty; 483 484#define CDEV_MAJOR 28 485static struct cdevsw sio_cdevsw = { 486 sioopen, sioclose, sioread, siowrite, 487 sioioctl, siostop, noreset, siodevtotty, 488 ttpoll, nommap, NULL, driver_name, 489 NULL, -1, nodump, nopsize, 490 D_TTY, 491}; 492 493int comconsole = -1; 494static volatile speed_t comdefaultrate = CONSPEED; 495#ifdef __alpha__ 496static volatile speed_t gdbdefaultrate = CONSPEED; 497#endif 498static u_int com_events; /* input chars + weighted output completions */ 499static Port_t siocniobase; 500#ifdef __alpha__ 501static Port_t siogdbiobase; 502#endif 503static bool_t sio_registered; 504static int sio_timeout; 505static int sio_timeouts_until_log; 506static struct callout_handle sio_timeout_handle 507 = CALLOUT_HANDLE_INITIALIZER(&sio_timeout_handle); 508#if 0 /* XXX */ 509static struct tty *sio_tty[NSIOTOT]; 510#else 511static struct tty sio_tty[NSIOTOT]; 512#endif 513static const int nsio_tty = NSIOTOT; 514 515#ifdef PC98 516struct siodev { 517 short if_type; 518 short irq; 519 Port_t cmd, sts, ctrl, mod; 520}; 521static int sysclock; 522 523#define COM_INT_DISABLE {int previpri; previpri=spltty(); 524#define COM_INT_ENABLE splx(previpri);} 525#define IEN_TxFLAG IEN_Tx 526 527#define COM_CARRIER_DETECT_EMULATE 0 528#define PC98_CHECK_MODEM_INTERVAL (hz/10) 529#define DCD_OFF_TOLERANCE 2 530#define DCD_ON_RECOGNITION 2 531#define IS_8251(if_type) (!(if_type & 0x10)) 532#define COM1_EXT_CLOCK 0x40000 533 534static void commint __P((dev_t dev)); 535static void com_tiocm_set __P((struct com_s *com, int msr)); 536static void com_tiocm_bis __P((struct com_s *com, int msr)); 537static void com_tiocm_bic __P((struct com_s *com, int msr)); 538static int com_tiocm_get __P((struct com_s *com)); 539static int com_tiocm_get_delta __P((struct com_s *com)); 540static void pc98_msrint_start __P((dev_t dev)); 541static void com_cflag_and_speed_set __P((struct com_s *com, int cflag, int speed)); 542static int pc98_ttspeedtab __P((struct com_s *com, int speed)); 543static int pc98_get_modem_status __P((struct com_s *com)); 544static timeout_t pc98_check_msr; 545static void pc98_set_baud_rate __P((struct com_s *com, int count)); 546static void pc98_i8251_reset __P((struct com_s *com, int mode, int command)); 547static void pc98_disable_i8251_interrupt __P((struct com_s *com, int mod)); 548static void pc98_enable_i8251_interrupt __P((struct com_s *com, int mod)); 549static int pc98_check_i8251_interrupt __P((struct com_s *com)); 550static int pc98_i8251_get_cmd __P((struct com_s *com)); 551static int pc98_i8251_get_mod __P((struct com_s *com)); 552static void pc98_i8251_set_cmd __P((struct com_s *com, int x)); 553static void pc98_i8251_or_cmd __P((struct com_s *com, int x)); 554static void pc98_i8251_clear_cmd __P((struct com_s *com, int x)); 555static void pc98_i8251_clear_or_cmd __P((struct com_s *com, int clr, int x)); 556static int pc98_check_if_type __P((device_t dev, struct siodev *iod)); 557static void pc98_check_sysclock __P((void)); 558static int pc98_set_ioport __P((struct com_s *com, int id_flags)); 559 560#define com_int_Tx_disable(com) \ 561 pc98_disable_i8251_interrupt(com,IEN_Tx|IEN_TxEMP) 562#define com_int_Tx_enable(com) \ 563 pc98_enable_i8251_interrupt(com,IEN_TxFLAG) 564#define com_int_Rx_disable(com) \ 565 pc98_disable_i8251_interrupt(com,IEN_Rx) 566#define com_int_Rx_enable(com) \ 567 pc98_enable_i8251_interrupt(com,IEN_Rx) 568#define com_int_TxRx_disable(com) \ 569 pc98_disable_i8251_interrupt(com,IEN_Tx|IEN_TxEMP|IEN_Rx) 570#define com_int_TxRx_enable(com) \ 571 pc98_enable_i8251_interrupt(com,IEN_TxFLAG|IEN_Rx) 572#define com_send_break_on(com) \ 573 pc98_i8251_or_cmd(com,CMD8251_SBRK) 574#define com_send_break_off(com) \ 575 pc98_i8251_clear_cmd(com,CMD8251_SBRK) 576 577static struct speedtab pc98speedtab[] = { /* internal RS232C interface */ 578 { 0, 0, }, 579 { 50, 50, }, 580 { 75, 75, }, 581 { 150, 150, }, 582 { 200, 200, }, 583 { 300, 300, }, 584 { 600, 600, }, 585 { 1200, 1200, }, 586 { 2400, 2400, }, 587 { 4800, 4800, }, 588 { 9600, 9600, }, 589 { 19200, 19200, }, 590 { 38400, 38400, }, 591 { 51200, 51200, }, 592 { 76800, 76800, }, 593 { 20800, 20800, }, 594 { 31200, 31200, }, 595 { 41600, 41600, }, 596 { 62400, 62400, }, 597 { -1, -1 } 598}; 599static struct speedtab pc98fast_speedtab[] = { 600 { 9600, 0x80 | COMBRD(9600), }, 601 { 19200, 0x80 | COMBRD(19200), }, 602 { 38400, 0x80 | COMBRD(38400), }, 603 { 57600, 0x80 | COMBRD(57600), }, 604 { 115200, 0x80 | COMBRD(115200), }, 605 { -1, -1 } 606}; 607static struct speedtab comspeedtab_pio9032b[] = { 608 { 300, 6, }, 609 { 600, 5, }, 610 { 1200, 4, }, 611 { 2400, 3, }, 612 { 4800, 2, }, 613 { 9600, 1, }, 614 { 19200, 0, }, 615 { 38400, 7, }, 616 { -1, -1 } 617}; 618static struct speedtab comspeedtab_b98_01[] = { 619 { 75, 11, }, 620 { 150, 10, }, 621 { 300, 9, }, 622 { 600, 8, }, 623 { 1200, 7, }, 624 { 2400, 6, }, 625 { 4800, 5, }, 626 { 9600, 4, }, 627 { 19200, 3, }, 628 { 38400, 2, }, 629 { 76800, 1, }, 630 { 153600, 0, }, 631 { -1, -1 } 632}; 633static struct speedtab comspeedtab_mc16550[] = { 634 { 300, 1536, }, 635 { 600, 768, }, 636 { 1200, 384, }, 637 { 2400, 192, }, 638 { 4800, 96, }, 639 { 9600, 48, }, 640 { 19200, 24, }, 641 { 38400, 12, }, 642 { 57600, 8, }, 643 { 115200, 4, }, 644 { 153600, 3, }, 645 { 230400, 2, }, 646 { 460800, 1, }, 647 { -1, -1 } 648}; 649static struct speedtab comspeedtab_rsb384[] = { 650 { 300, 3840, }, 651 { 600, 1920, }, 652 { 1200, 960, }, 653 { 2400, 480, }, 654 { 4800, 240, }, 655 { 9600, 120, }, 656 { 19200, 60, }, 657 { 38400, 30, }, 658 { 57600, 20, }, 659 { 115200, 10, }, 660 { 128000, 9, }, 661 { 144000, 8, }, 662 { 192000, 6, }, 663 { 230400, 5, }, 664 { 288000, 4, }, 665 { 384000, 3, }, 666 { 576000, 2, }, 667 { 1152000, 1, }, 668 { -1, -1 } 669}; 670static struct speedtab comspeedtab_rsa[] = { 671 { 0, 0 }, 672 { 50, COMBRD_RSA(50) }, 673 { 75, COMBRD_RSA(75) }, 674 { 110, COMBRD_RSA(110) }, 675 { 134, COMBRD_RSA(134) }, 676 { 150, COMBRD_RSA(150) }, 677 { 200, COMBRD_RSA(200) }, 678 { 300, COMBRD_RSA(300) }, 679 { 600, COMBRD_RSA(600) }, 680 { 1200, COMBRD_RSA(1200) }, 681 { 1800, COMBRD_RSA(1800) }, 682 { 2400, COMBRD_RSA(2400) }, 683 { 4800, COMBRD_RSA(4800) }, 684 { 9600, COMBRD_RSA(9600) }, 685 { 19200, COMBRD_RSA(19200) }, 686 { 38400, COMBRD_RSA(38400) }, 687 { 57600, COMBRD_RSA(57600) }, 688 { 115200, COMBRD_RSA(115200) }, 689 { 230400, COMBRD_RSA(230400) }, 690 { 460800, COMBRD_RSA(460800) }, 691 { 921600, COMBRD_RSA(921600) }, 692 { -1, -1 } 693}; 694#endif /* PC98 */ 695 696static struct speedtab comspeedtab[] = { 697 { 0, 0 }, 698 { 50, COMBRD(50) }, 699 { 75, COMBRD(75) }, 700 { 110, COMBRD(110) }, 701 { 134, COMBRD(134) }, 702 { 150, COMBRD(150) }, 703 { 200, COMBRD(200) }, 704 { 300, COMBRD(300) }, 705 { 600, COMBRD(600) }, 706 { 1200, COMBRD(1200) }, 707 { 1800, COMBRD(1800) }, 708 { 2400, COMBRD(2400) }, 709 { 4800, COMBRD(4800) }, 710 { 9600, COMBRD(9600) }, 711 { 19200, COMBRD(19200) }, 712 { 38400, COMBRD(38400) }, 713 { 57600, COMBRD(57600) }, 714 { 115200, COMBRD(115200) }, 715 { -1, -1 } 716}; 717 718#ifdef PC98 719struct { 720 char *name; 721 short port_table[7]; 722 short irr_mask; 723 struct speedtab *speedtab; 724 short check_irq; 725} if_8251_type[] = { 726 /* COM_IF_INTERNAL */ 727 { " (internal)", {0x30, 0x32, 0x32, 0x33, 0x35, -1, -1}, 728 -1, pc98speedtab, 1 }, 729 /* COM_IF_PC9861K_1 */ 730 { " (PC9861K)", {0xb1, 0xb3, 0xb3, 0xb0, 0xb0, -1, -1}, 731 3, NULL, 1 }, 732 /* COM_IF_PC9861K_2 */ 733 { " (PC9861K)", {0xb9, 0xbb, 0xbb, 0xb2, 0xb2, -1, -1}, 734 3, NULL, 1 }, 735 /* COM_IF_IND_SS_1 */ 736 { " (IND-SS)", {0xb1, 0xb3, 0xb3, 0xb0, 0xb0, 0xb3, -1}, 737 3, comspeedtab_mc16550, 1 }, 738 /* COM_IF_IND_SS_2 */ 739 { " (IND-SS)", {0xb9, 0xbb, 0xbb, 0xb2, 0xb2, 0xbb, -1}, 740 3, comspeedtab_mc16550, 1 }, 741 /* COM_IF_PIO9032B_1 */ 742 { " (PIO9032B)", {0xb1, 0xb3, 0xb3, 0xb0, 0xb0, 0xb8, -1}, 743 7, comspeedtab_pio9032b, 1 }, 744 /* COM_IF_PIO9032B_2 */ 745 { " (PIO9032B)", {0xb9, 0xbb, 0xbb, 0xb2, 0xb2, 0xba, -1}, 746 7, comspeedtab_pio9032b, 1 }, 747 /* COM_IF_B98_01_1 */ 748 { " (B98-01)", {0xb1, 0xb3, 0xb3, 0xb0, 0xb0, 0xd1, 0xd3}, 749 7, comspeedtab_b98_01, 0 }, 750 /* COM_IF_B98_01_2 */ 751 { " (B98-01)", {0xb9, 0xbb, 0xbb, 0xb2, 0xb2, 0xd5, 0xd7}, 752 7, comspeedtab_b98_01, 0 }, 753}; 754#define PC98SIO_data_port(type) (if_8251_type[type].port_table[0]) 755#define PC98SIO_cmd_port(type) (if_8251_type[type].port_table[1]) 756#define PC98SIO_sts_port(type) (if_8251_type[type].port_table[2]) 757#define PC98SIO_in_modem_port(type) (if_8251_type[type].port_table[3]) 758#define PC98SIO_intr_ctrl_port(type) (if_8251_type[type].port_table[4]) 759#define PC98SIO_baud_rate_port(type) (if_8251_type[type].port_table[5]) 760#define PC98SIO_func_port(type) (if_8251_type[type].port_table[6]) 761 762struct { 763 char *name; 764 short irr_read; 765 short irr_write; 766 short port_shift; 767 short io_size; 768 struct speedtab *speedtab; 769} if_16550a_type[] = { 770 /* COM_IF_RSA98 */ 771 { " (RSA-98)", -1, -1, 0, IO_COMSIZE, comspeedtab }, 772 /* COM_IF_NS16550 */ 773 { "", -1, -1, 0, IO_COMSIZE, comspeedtab }, 774 /* COM_IF_SECOND_CCU */ 775 { "", -1, -1, 0, IO_COMSIZE, comspeedtab }, 776 /* COM_IF_MC16550II */ 777 { " (MC16550II)", -1, 0x1000, 8, 1, comspeedtab_mc16550 }, 778 /* COM_IF_MCRS98 */ 779 { " (MC-RS98)", -1, 0x1000, 8, 1, comspeedtab_mc16550 }, 780 /* COM_IF_RSB3000 */ 781 { " (RSB-3000)", 0xbf, -1, 1, 1, comspeedtab_rsb384 }, 782 /* COM_IF_RSB384 */ 783 { " (RSB-384)", 0xbf, -1, 1, 1, comspeedtab_rsb384 }, 784 /* COM_IF_MODEM_CARD */ 785 { "", -1, -1, 0, IO_COMSIZE, comspeedtab }, 786 /* COM_IF_RSA98III */ 787 { " (RSA-98III)", -1, -1, 0, 16, comspeedtab_rsa }, 788 /* COM_IF_ESP98 */ 789 { " (ESP98)", -1, -1, 1, 1, comspeedtab_mc16550 }, 790}; 791#endif /* PC98 */ 792 793#ifdef COM_ESP 794#ifdef PC98 795 796/* XXX configure this properly. */ 797static Port_t likely_com_ports[] = { 0, 0xb0, 0xb1, 0 }; 798static Port_t likely_esp_ports[] = { 0xc0d0, 0 }; 799 800#define ESP98_CMD1 (ESP_CMD1 * 0x100) 801#define ESP98_CMD2 (ESP_CMD2 * 0x100) 802#define ESP98_STATUS1 (ESP_STATUS1 * 0x100) 803#define ESP98_STATUS2 (ESP_STATUS2 * 0x100) 804 805#else /* PC98 */ 806 807/* XXX configure this properly. */ 808static Port_t likely_com_ports[] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, }; 809static Port_t likely_esp_ports[] = { 0x140, 0x180, 0x280, 0 }; 810 811#endif /* PC98 */ 812#endif 813 814/* 815 * handle sysctl read/write requests for console speed 816 * 817 * In addition to setting comdefaultrate for I/O through /dev/console, 818 * also set the initial and lock values for the /dev/ttyXX device 819 * if there is one associated with the console. Finally, if the /dev/tty 820 * device has already been open, change the speed on the open running port 821 * itself. 822 */ 823 824static int 825sysctl_machdep_comdefaultrate SYSCTL_HANDLER_ARGS 826{ 827 int error, s; 828 speed_t newspeed; 829 struct com_s *com; 830 struct tty *tp; 831 832 newspeed = comdefaultrate; 833 834 error = sysctl_handle_opaque(oidp, &newspeed, sizeof newspeed, req); 835 if (error || !req->newptr) 836 return (error); 837 838 comdefaultrate = newspeed; 839 840 if (comconsole < 0) /* serial console not selected? */ 841 return (0); 842 843 com = com_addr(comconsole); 844 if (!com) 845 return (ENXIO); 846 847 /* 848 * set the initial and lock rates for /dev/ttydXX and /dev/cuaXX 849 * (note, the lock rates really are boolean -- if non-zero, disallow 850 * speed changes) 851 */ 852 com->it_in.c_ispeed = com->it_in.c_ospeed = 853 com->lt_in.c_ispeed = com->lt_in.c_ospeed = 854 com->it_out.c_ispeed = com->it_out.c_ospeed = 855 com->lt_out.c_ispeed = com->lt_out.c_ospeed = comdefaultrate; 856 857 /* 858 * if we're open, change the running rate too 859 */ 860 tp = com->tp; 861 if (tp && (tp->t_state & TS_ISOPEN)) { 862 tp->t_termios.c_ispeed = 863 tp->t_termios.c_ospeed = comdefaultrate; 864 s = spltty(); 865 error = comparam(tp, &tp->t_termios); 866 splx(s); 867 } 868 return error; 869} 870 871SYSCTL_PROC(_machdep, OID_AUTO, conspeed, CTLTYPE_INT | CTLFLAG_RW, 872 0, 0, sysctl_machdep_comdefaultrate, "I", ""); 873 874#if NCARD > 0 875/* 876 * PC-Card (PCMCIA) specific code. 877 */ 878static int sioinit __P((struct pccard_devinfo *)); 879static void siounload __P((struct pccard_devinfo *)); 880static int card_intr __P((struct pccard_devinfo *)); 881 882PCCARD_MODULE(sio, sioinit, siounload, card_intr, 0, tty_imask); 883 884/* 885 * Initialize the device - called from Slot manager. 886 */ 887int 888sioinit(struct pccard_devinfo *devi) 889{ 890 891 /* validate unit number. */ 892 if (devi->isahd.id_unit >= (NSIOTOT)) 893 return(ENODEV); 894 /* Make sure it isn't already probed. */ 895 if (com_addr(devi->isahd.id_unit)) 896 return(EBUSY); 897 898 /* It's already probed as serial by Upper */ 899 devi->isahd.id_flags |= COM_C_NOPROBE; 900 901 /* 902 * Probe the device. If a value is returned, the 903 * device was found at the location. 904 */ 905 if (sioprobe(&devi->isahd) == 0) 906 return(ENXIO); 907 if (sioattach(&devi->isahd) == 0) 908 return(ENXIO); 909 910 return(0); 911} 912 913/* 914 * siounload - unload the driver and clear the table. 915 * XXX TODO: 916 * This is usually called when the card is ejected, but 917 * can be caused by a modunload of a controller driver. 918 * The idea is to reset the driver's view of the device 919 * and ensure that any driver entry points such as 920 * read and write do not hang. 921 */ 922static void 923siounload(struct pccard_devinfo *devi) 924{ 925 struct com_s *com; 926 927 if (!devi) { 928 printf("NULL devi in siounload\n"); 929 return; 930 } 931 com = com_addr(devi->isahd.id_unit); 932 if (!com) { 933 printf("NULL com in siounload\n"); 934 return; 935 } 936 if (!com->iobase) { 937 printf("sio%d already unloaded!\n",devi->isahd.id_unit); 938 return; 939 } 940 if (com->tp && (com->tp->t_state & TS_ISOPEN)) { 941 com->gone = 1; 942 printf("sio%d: unload\n", devi->isahd.id_unit); 943 com->tp->t_gen++; 944 ttyclose(com->tp); 945 ttwakeup(com->tp); 946 ttwwakeup(com->tp); 947 } else { 948 com_addr(com->unit) = NULL; 949 if (com->ibuf != NULL) 950 free(com->ibuf, M_DEVBUF); 951 free(com, M_DEVBUF); 952 printf("sio%d: unload,gone\n", devi->isahd.id_unit); 953 } 954} 955 956/* 957 * card_intr - Shared interrupt called from 958 * front end of PC-Card handler. 959 */ 960static int 961card_intr(struct pccard_devinfo *devi) 962{ 963 struct com_s *com; 964 965 COM_LOCK(); 966 com = com_addr(devi->isahd.id_unit); 967 if (com && !com->gone) 968 siointr1(com_addr(devi->isahd.id_unit)); 969 COM_UNLOCK(); 970 return(1); 971} 972#endif /* NCARD > 0 */ 973 974#define SET_FLAG(dev, bit) isa_set_flags(dev, isa_get_flags(dev) | (bit)) 975#define CLR_FLAG(dev, bit) isa_set_flags(dev, isa_get_flags(dev) & ~(bit)) 976 977static int 978sioprobe(dev) 979 device_t dev; 980{ 981 static bool_t already_init; 982 bool_t failures[10]; 983 int fn; 984 device_t idev; 985 Port_t iobase; 986 intrmask_t irqmap[4]; 987 intrmask_t irqs; 988 u_char mcr_image; 989 int result; 990 device_t xdev; 991 u_int flags = isa_get_flags(dev); 992#ifdef PC98 993 int irqout=0; 994 int tmp; 995 int port_shift = 0; 996 struct siodev iod; 997 Port_t rsabase = NULL; 998#endif 999 1000 if (!already_init) { 1001 /* 1002 * Turn off MCR_IENABLE for all likely serial ports. An unused 1003 * port with its MCR_IENABLE gate open will inhibit interrupts 1004 * from any used port that shares the interrupt vector. 1005 * XXX the gate enable is elsewhere for some multiports. 1006 */ 1007 device_t *devs; 1008 int count, i; 1009 1010 devclass_get_devices(sio_devclass, &devs, &count); 1011#ifdef PC98 1012 for (i = 0; i < count; i++) { 1013 xdev = devs[i]; 1014 tmp = (flags >> 24) & 0xff; 1015 if (IS_8251(tmp)) 1016 outb((isa_get_port(xdev) & 0xff00) | PC98SIO_cmd_port(tmp & 0x0f), 0xf2); 1017 else 1018 if (tmp == COM_IF_RSA98III) { 1019 rsabase = isa_get_port(xdev) & 0xfff0; 1020 outb(isa_get_port(xdev) + 8 + (com_mcr << if_16550a_type[tmp & 0x0f].port_shift), 0); 1021 } else 1022 outb(isa_get_port(xdev) + (com_mcr << if_16550a_type[tmp & 0x0f].port_shift), 0); 1023 } 1024#else 1025 for (i = 0; i < count; i++) { 1026 xdev = devs[i]; 1027 outb(isa_get_port(xdev) + com_mcr, 0); 1028 } 1029#endif 1030 free(devs, M_TEMP); 1031 already_init = TRUE; 1032 } 1033 1034 if (COM_LLCONSOLE(flags)) { 1035 printf("sio%d: reserved for low-level i/o\n", 1036 device_get_unit(dev)); 1037 return (ENXIO); 1038 } 1039 1040#ifdef PC98 1041 DELAY(10); 1042 1043 /* 1044 * If the port is i8251 UART (internal, B98_01) 1045 */ 1046 if (pc98_check_if_type(dev, &iod) == -1) 1047 return ENXIO; 1048 if (iod.irq > 0) 1049 isa_set_irq(dev, iod.irq); 1050 if (IS_8251(iod.if_type)) { 1051 outb(iod.cmd, 0); 1052 DELAY(10); 1053 outb(iod.cmd, 0); 1054 DELAY(10); 1055 outb(iod.cmd, 0); 1056 DELAY(10); 1057 outb(iod.cmd, CMD8251_RESET); 1058 DELAY(1000); /* for a while...*/ 1059 outb(iod.cmd, 0xf2); /* MODE (dummy) */ 1060 DELAY(10); 1061 outb(iod.cmd, 0x01); /* CMD (dummy) */ 1062 DELAY(1000); /* for a while...*/ 1063 if (( inb(iod.sts) & STS8251_TxEMP ) == 0 ) { 1064 result = ENXIO; 1065 } 1066 if (if_8251_type[iod.if_type & 0x0f].check_irq) { 1067 COM_INT_DISABLE 1068 tmp = ( inb( iod.ctrl ) & ~(IEN_Rx|IEN_TxEMP|IEN_Tx)); 1069 outb( iod.ctrl, tmp|IEN_TxEMP ); 1070 DELAY(10); 1071 result = isa_irq_pending() ? 0 : ENXIO; 1072 outb( iod.ctrl, tmp ); 1073 COM_INT_ENABLE 1074 } else { 1075 /* 1076 * B98_01 doesn't activate TxEMP interrupt line 1077 * when being reset, so we can't check irq pending. 1078 */ 1079 result = 0; 1080 } 1081 if (epson_machine_id==0x20) { /* XXX */ 1082 result = 0; 1083 } 1084 isa_set_portsize(dev, 4); 1085 return result; 1086 } 1087#endif /* PC98 */ 1088 /* 1089 * If the device is on a multiport card and has an AST/4 1090 * compatible interrupt control register, initialize this 1091 * register and prepare to leave MCR_IENABLE clear in the mcr. 1092 * Otherwise, prepare to set MCR_IENABLE in the mcr. 1093 * Point idev to the device struct giving the correct id_irq. 1094 * This is the struct for the master device if there is one. 1095 */ 1096 idev = dev; 1097 mcr_image = MCR_IENABLE; 1098#ifdef PC98 1099 if (iod.if_type == COM_IF_RSA98III) { 1100 mcr_image = 0; 1101 rsabase = isa_get_port(idev) & 0xfff0; 1102 if (rsabase != isa_get_port(idev)) 1103 return(0); 1104 outb(rsabase + rsa_msr, 0x04); 1105 outb(rsabase + rsa_frr, 0x00); 1106 if ((inb(rsabase + rsa_srr) & 0x36) != 0x36) 1107 return (0); 1108 outb(rsabase + rsa_ier, 0x00); 1109 outb(rsabase + rsa_frr, 0x00); 1110 outb(rsabase + rsa_tivsr, 0x00); 1111 outb(rsabase + rsa_tcr, 0x00); 1112 } 1113#endif /* PC98 */ 1114#ifdef COM_MULTIPORT 1115 if (COM_ISMULTIPORT(flags)) { 1116 idev = devclass_get_device(sio_devclass, COM_MPMASTER(flags)); 1117 if (idev == NULL) { 1118 printf("sio%d: master device %d not configured\n", 1119 device_get_unit(dev), COM_MPMASTER(flags)); 1120 isa_set_irq(dev, 0); 1121 idev = dev; 1122 } 1123#ifndef PC98 1124 if (!COM_NOTAST4(flags)) { 1125 outb(isa_get_port(idev) + com_scr, 1126 isa_get_irq(idev) >= 0 ? 0x80 : 0); 1127 mcr_image = 0; 1128 } 1129#endif /* !PC98 */ 1130 } 1131#endif /* COM_MULTIPORT */ 1132 if (isa_get_irq(idev) < 0) 1133 mcr_image = 0; 1134 1135#ifdef PC98 1136 tmp = if_16550a_type[iod.if_type & 0x0f].irr_write; 1137 if (tmp != -1) { 1138 /* MC16550II */ 1139 switch (isa_get_irq(idev)) { 1140 case 3: irqout = 4; break; 1141 case 5: irqout = 5; break; 1142 case 6: irqout = 6; break; 1143 case 12: irqout = 7; break; 1144 default: 1145 printf("sio%d: irq configuration error\n", 1146 device_get_unit(dev)); 1147 return (0); 1148 } 1149 outb((isa_get_port(dev) & 0x00ff) | tmp, irqout); 1150 } 1151 port_shift = if_16550a_type[iod.if_type & 0x0f].port_shift; 1152#endif 1153 bzero(failures, sizeof failures); 1154 iobase = isa_get_port(dev); 1155#ifdef PC98 1156 if (iod.if_type == COM_IF_RSA98III) 1157 iobase += 8; 1158#endif 1159 1160 /* 1161 * We don't want to get actual interrupts, just masked ones. 1162 * Interrupts from this line should already be masked in the ICU, 1163 * but mask them in the processor as well in case there are some 1164 * (misconfigured) shared interrupts. 1165 */ 1166 disable_intr(); 1167/* EXTRA DELAY? */ 1168 1169 /* 1170 * Initialize the speed and the word size and wait long enough to 1171 * drain the maximum of 16 bytes of junk in device output queues. 1172 * The speed is undefined after a master reset and must be set 1173 * before relying on anything related to output. There may be 1174 * junk after a (very fast) soft reboot and (apparently) after 1175 * master reset. 1176 * XXX what about the UART bug avoided by waiting in comparam()? 1177 * We don't want to to wait long enough to drain at 2 bps. 1178 */ 1179 if (iobase == siocniobase) 1180 DELAY((16 + 1) * 1000000 / (comdefaultrate / 10)); 1181 else { 1182#ifdef PC98 1183 tmp = ttspeedtab(SIO_TEST_SPEED, 1184 if_16550a_type[iod.if_type & 0x0f].speedtab); 1185 outb(iobase + (com_cfcr << port_shift), CFCR_DLAB|CFCR_8BITS); 1186 outb(iobase + (com_dlbl << port_shift), tmp & 0xff); 1187 outb(iobase + (com_dlbh << port_shift), (tmp >> 8) & 0xff); 1188 outb(iobase + (com_cfcr << port_shift), CFCR_8BITS); 1189#else 1190 outb(iobase + com_cfcr, CFCR_DLAB | CFCR_8BITS); 1191 outb(iobase + com_dlbl, COMBRD(SIO_TEST_SPEED) & 0xff); 1192 outb(iobase + com_dlbh, (u_int) COMBRD(SIO_TEST_SPEED) >> 8); 1193 outb(iobase + com_cfcr, CFCR_8BITS); 1194#endif 1195 DELAY((16 + 1) * 1000000 / (SIO_TEST_SPEED / 10)); 1196 } 1197 1198 /* 1199 * Enable the interrupt gate and disable device interupts. This 1200 * should leave the device driving the interrupt line low and 1201 * guarantee an edge trigger if an interrupt can be generated. 1202 */ 1203/* EXTRA DELAY? */ 1204#ifdef PC98 1205 outb(iobase + (com_mcr << port_shift), mcr_image); 1206 outb(iobase + (com_ier << port_shift), 0); 1207#else 1208 outb(iobase + com_mcr, mcr_image); 1209 outb(iobase + com_ier, 0); 1210#endif 1211 DELAY(1000); /* XXX */ 1212 irqmap[0] = isa_irq_pending(); 1213 1214 /* 1215 * Attempt to set loopback mode so that we can send a null byte 1216 * without annoying any external device. 1217 */ 1218/* EXTRA DELAY? */ 1219#ifdef PC98 1220 outb(iobase + (com_mcr << port_shift), mcr_image | MCR_LOOPBACK); 1221#else 1222 outb(iobase + com_mcr, mcr_image | MCR_LOOPBACK); 1223#endif 1224 1225 /* 1226 * Attempt to generate an output interrupt. On 8250's, setting 1227 * IER_ETXRDY generates an interrupt independent of the current 1228 * setting and independent of whether the THR is empty. On 16450's, 1229 * setting IER_ETXRDY generates an interrupt independent of the 1230 * current setting. On 16550A's, setting IER_ETXRDY only 1231 * generates an interrupt when IER_ETXRDY is not already set. 1232 */ 1233#ifdef PC98 1234 outb(iobase + (com_ier << port_shift), IER_ETXRDY); 1235 if (iod.if_type == COM_IF_RSA98III) 1236 outb(rsabase + rsa_ier, 0x04); 1237#else 1238 outb(iobase + com_ier, IER_ETXRDY); 1239#endif /* PC98 */ 1240 1241 /* 1242 * On some 16x50 incompatibles, setting IER_ETXRDY doesn't generate 1243 * an interrupt. They'd better generate one for actually doing 1244 * output. Loopback may be broken on the same incompatibles but 1245 * it's unlikely to do more than allow the null byte out. 1246 */ 1247#ifdef PC98 1248 outb(iobase + (com_data << port_shift), 0); 1249#else 1250 outb(iobase + com_data, 0); 1251#endif 1252 DELAY((1 + 2) * 1000000 / (SIO_TEST_SPEED / 10)); 1253 1254 /* 1255 * Turn off loopback mode so that the interrupt gate works again 1256 * (MCR_IENABLE was hidden). This should leave the device driving 1257 * an interrupt line high. It doesn't matter if the interrupt 1258 * line oscillates while we are not looking at it, since interrupts 1259 * are disabled. 1260 */ 1261/* EXTRA DELAY? */ 1262#ifdef PC98 1263 outb(iobase + (com_mcr << port_shift), mcr_image); 1264#else 1265 outb(iobase + com_mcr, mcr_image); 1266#endif /* PC98 */ 1267 1268 /* 1269 * It's a definitly Serial PCMCIA(16550A), but still be required 1270 * for IIR_TXRDY implementation ( Palido 321s, DC-1S... ) 1271 */ 1272 if ( COM_NOPROBE(flags) ) { 1273 /* Reading IIR register twice */ 1274 for ( fn = 0; fn < 2; fn ++ ) { 1275 DELAY(10000); 1276#ifdef PC98 1277 failures[6] = inb(iobase + (com_iir << port_shift)); 1278#else 1279 failures[6] = inb(iobase + com_iir); 1280#endif 1281 } 1282 /* Check IIR_TXRDY clear ? */ 1283#ifdef PC98 1284 isa_set_portsize(dev, 1285 if_16550a_type[iod.if_type & 0x0f].io_size); 1286#else 1287 isa_set_portsize(dev, IO_COMSIZE); 1288#endif 1289 result = 0; 1290 if ( failures[6] & IIR_TXRDY ) { 1291 /* Nop, Double check with clearing IER */ 1292#ifdef PC98 1293 outb(iobase + (com_ier << port_shift), 0); 1294 if (inb(iobase + 1295 (com_iir << port_shift)) & IIR_NOPEND) { 1296#else 1297 outb(iobase + com_ier, 0); 1298 if ( inb(iobase + com_iir) & IIR_NOPEND ) { 1299#endif 1300 /* Ok. we're familia this gang */ 1301 SET_FLAG(dev, COM_C_IIR_TXRDYBUG); /* Set IIR_TXRDYBUG */ 1302 } else { 1303 /* Unknow, Just omit this chip.. XXX*/ 1304 result = ENXIO; 1305 } 1306 } else { 1307 /* OK. this is well-known guys */ 1308 CLR_FLAG(dev, COM_C_IIR_TXRDYBUG); /*Clear IIR_TXRDYBUG*/ 1309 } 1310#ifdef PC98 1311 outb(iobase + (com_cfcr << port_shift), CFCR_8BITS); 1312#else 1313 outb(iobase + com_cfcr, CFCR_8BITS); 1314#endif 1315 enable_intr(); 1316 return (iobase == siocniobase ? 0 : result); 1317 } 1318 1319 /* 1320 * Check that 1321 * o the CFCR, IER and MCR in UART hold the values written to them 1322 * (the values happen to be all distinct - this is good for 1323 * avoiding false positive tests from bus echoes). 1324 * o an output interrupt is generated and its vector is correct. 1325 * o the interrupt goes away when the IIR in the UART is read. 1326 */ 1327/* EXTRA DELAY? */ 1328#ifdef PC98 1329 failures[0] = inb(iobase + (com_cfcr << port_shift)) - CFCR_8BITS; 1330 failures[1] = inb(iobase + (com_ier << port_shift)) - IER_ETXRDY; 1331 failures[2] = inb(iobase + (com_mcr << port_shift)) - mcr_image; 1332#else 1333 failures[0] = inb(iobase + com_cfcr) - CFCR_8BITS; 1334 failures[1] = inb(iobase + com_ier) - IER_ETXRDY; 1335 failures[2] = inb(iobase + com_mcr) - mcr_image; 1336#endif 1337 DELAY(10000); /* Some internal modems need this time */ 1338 irqmap[1] = isa_irq_pending(); 1339#ifdef PC98 1340 failures[4] = (inb(iobase + (com_iir << port_shift)) & IIR_IMASK) 1341 - IIR_TXRDY; 1342 if (iod.if_type == COM_IF_RSA98III) 1343 inb(rsabase + rsa_srr); 1344#else 1345 failures[4] = (inb(iobase + com_iir) & IIR_IMASK) - IIR_TXRDY; 1346#endif 1347 DELAY(1000); /* XXX */ 1348 irqmap[2] = isa_irq_pending(); 1349#ifdef PC98 1350 failures[6] = (inb(iobase + (com_iir << port_shift)) & IIR_IMASK) 1351 - IIR_NOPEND; 1352 if (iod.if_type == COM_IF_RSA98III) 1353 inb(rsabase + rsa_srr); 1354#else 1355 failures[6] = (inb(iobase + com_iir) & IIR_IMASK) - IIR_NOPEND; 1356#endif 1357 1358 /* 1359 * Turn off all device interrupts and check that they go off properly. 1360 * Leave MCR_IENABLE alone. For ports without a master port, it gates 1361 * the OUT2 output of the UART to 1362 * the ICU input. Closing the gate would give a floating ICU input 1363 * (unless there is another device driving it) and spurious interrupts. 1364 * (On the system that this was first tested on, the input floats high 1365 * and gives a (masked) interrupt as soon as the gate is closed.) 1366 */ 1367#ifdef PC98 1368 outb(iobase + (com_ier << port_shift), 0); 1369 outb(iobase + (com_cfcr << port_shift), CFCR_8BITS); 1370 failures[7] = inb(iobase + (com_ier << port_shift)); 1371 if (iod.if_type == COM_IF_RSA98III) 1372 outb(rsabase + rsa_ier, 0x00); 1373#else 1374 outb(iobase + com_ier, 0); 1375 outb(iobase + com_cfcr, CFCR_8BITS); /* dummy to avoid bus echo */ 1376 failures[7] = inb(iobase + com_ier); 1377#endif 1378 DELAY(1000); /* XXX */ 1379 irqmap[3] = isa_irq_pending(); 1380#ifdef PC98 1381 failures[9] = (inb(iobase + (com_iir << port_shift)) & IIR_IMASK) 1382 - IIR_NOPEND; 1383 if (iod.if_type == COM_IF_RSA98III) { 1384 inb(rsabase + rsa_srr); 1385 outb(rsabase + rsa_frr, 0x00); 1386 } 1387#else 1388 failures[9] = (inb(iobase + com_iir) & IIR_IMASK) - IIR_NOPEND; 1389#endif 1390 1391 enable_intr(); 1392 1393 irqs = irqmap[1] & ~irqmap[0]; 1394 if (isa_get_irq(idev) >= 0 && ((1 << isa_get_irq(idev)) & irqs) == 0) 1395 printf( 1396 "sio%d: configured irq %d not in bitmap of probed irqs %#x\n", 1397 device_get_unit(dev), isa_get_irq(idev), irqs); 1398 if (bootverbose) 1399 printf("sio%d: irq maps: %#x %#x %#x %#x\n", 1400 device_get_unit(dev), 1401 irqmap[0], irqmap[1], irqmap[2], irqmap[3]); 1402 1403#ifdef PC98 1404 isa_set_portsize(dev, if_16550a_type[iod.if_type & 0x0f].io_size); 1405#else 1406 isa_set_portsize(dev, IO_COMSIZE); 1407#endif 1408 result = 0; 1409 for (fn = 0; fn < sizeof failures; ++fn) 1410 if (failures[fn]) { 1411#ifdef PC98 1412 outb(iobase + (com_mcr << port_shift), 0); 1413#else 1414 outb(iobase + com_mcr, 0); 1415#endif 1416 result = ENXIO; 1417 if (bootverbose) { 1418 printf("sio%d: probe failed test(s):", 1419 device_get_unit(dev)); 1420 for (fn = 0; fn < sizeof failures; ++fn) 1421 if (failures[fn]) 1422 printf(" %d", fn); 1423 printf("\n"); 1424 } 1425 break; 1426 } 1427 return (iobase == siocniobase ? 0 : result); 1428} 1429 1430#ifdef COM_ESP 1431static int 1432espattach(isdp, com, esp_port) 1433 struct isa_device *isdp; 1434 struct com_s *com; 1435 Port_t esp_port; 1436{ 1437 u_char dips; 1438 u_char val; 1439 1440 /* 1441 * Check the ESP-specific I/O port to see if we're an ESP 1442 * card. If not, return failure immediately. 1443 */ 1444 if ((inb(esp_port) & 0xf3) == 0) { 1445 printf(" port 0x%x is not an ESP board?\n", esp_port); 1446 return (0); 1447 } 1448 1449 /* 1450 * We've got something that claims to be a Hayes ESP card. 1451 * Let's hope so. 1452 */ 1453 1454 /* Get the dip-switch configuration */ 1455#ifdef PC98 1456 outb(esp_port + ESP98_CMD1, ESP_GETDIPS); 1457 dips = inb(esp_port + ESP98_STATUS1); 1458#else 1459 outb(esp_port + ESP_CMD1, ESP_GETDIPS); 1460 dips = inb(esp_port + ESP_STATUS1); 1461#endif 1462 1463 /* 1464 * Bits 0,1 of dips say which COM port we are. 1465 */ 1466#ifdef PC98 1467 if ((com->iobase & 0xff) == likely_com_ports[dips & 0x03]) 1468#else 1469 if (com->iobase == likely_com_ports[dips & 0x03]) 1470#endif 1471 printf(" : ESP"); 1472 else { 1473 printf(" esp_port has com %d\n", dips & 0x03); 1474 return (0); 1475 } 1476 1477 /* 1478 * Check for ESP version 2.0 or later: bits 4,5,6 = 010. 1479 */ 1480#ifdef PC98 1481 outb(esp_port + ESP98_CMD1, ESP_GETTEST); 1482 val = inb(esp_port + ESP98_STATUS1); /* clear reg 1 */ 1483 val = inb(esp_port + ESP98_STATUS2); 1484#else 1485 outb(esp_port + ESP_CMD1, ESP_GETTEST); 1486 val = inb(esp_port + ESP_STATUS1); /* clear reg 1 */ 1487 val = inb(esp_port + ESP_STATUS2); 1488#endif 1489 if ((val & 0x70) < 0x20) { 1490 printf("-old (%o)", val & 0x70); 1491 return (0); 1492 } 1493 1494 /* 1495 * Check for ability to emulate 16550: bit 7 == 1 1496 */ 1497 if ((dips & 0x80) == 0) { 1498 printf(" slave"); 1499 return (0); 1500 } 1501 1502 /* 1503 * Okay, we seem to be a Hayes ESP card. Whee. 1504 */ 1505 com->esp = TRUE; 1506 com->esp_port = esp_port; 1507 return (1); 1508} 1509#endif /* COM_ESP */ 1510 1511static int 1512sioattach(dev) 1513 device_t dev; 1514{ 1515 struct com_s *com; 1516#ifdef COM_ESP 1517 Port_t *espp; 1518#endif 1519 Port_t iobase; 1520#if 0 1521 int s; 1522#endif 1523 int unit; 1524 void *ih; 1525 struct resource *res; 1526 int zero = 0; 1527 u_int flags = isa_get_flags(dev); 1528#ifdef PC98 1529 int port_shift = 0; 1530 u_char *obuf; 1531 u_long obufsize; 1532#endif 1533 1534#if 0 1535 isdp->id_ri_flags |= RI_FAST; 1536#endif 1537 iobase = isa_get_port(dev); 1538#ifdef PC98 1539 if (((flags >> 24) & 0xff) == COM_IF_RSA98III) 1540 iobase += 8; 1541#endif 1542 unit = device_get_unit(dev); 1543 com = device_get_softc(dev); 1544#ifdef PC98 1545 obufsize = 256; 1546 if (((flags >> 24) & 0xff) == COM_IF_RSA98III) 1547 obufsize = 2048; 1548 if ((obuf = malloc(obufsize * 2, M_DEVBUF, M_NOWAIT)) == NULL) 1549 return (0); 1550 bzero(obuf, obufsize * 2); 1551#endif 1552 1553 /* 1554 * sioprobe() has initialized the device registers as follows: 1555 * o cfcr = CFCR_8BITS. 1556 * It is most important that CFCR_DLAB is off, so that the 1557 * data port is not hidden when we enable interrupts. 1558 * o ier = 0. 1559 * Interrupts are only enabled when the line is open. 1560 * o mcr = MCR_IENABLE, or 0 if the port has AST/4 compatible 1561 * interrupt control register or the config specifies no irq. 1562 * Keeping MCR_DTR and MCR_RTS off might stop the external 1563 * device from sending before we are ready. 1564 */ 1565 bzero(com, sizeof *com); 1566#ifdef PC98 1567 com->obufsize = obufsize; 1568 com->obuf1 = obuf; 1569 com->obuf2 = obuf + obufsize; 1570#endif 1571 com->unit = unit; 1572 com->cfcr_image = CFCR_8BITS; 1573 com->dtr_wait = 3 * hz; 1574 com->loses_outints = COM_LOSESOUTINTS(flags) != 0; 1575 com->no_irq = isa_get_irq(dev) < 0; 1576 com->tx_fifo_size = 1; 1577 com->obufs[0].l_head = com->obuf1; 1578 com->obufs[1].l_head = com->obuf2; 1579 1580 com->iobase = iobase; 1581#ifdef PC98 1582 if (pc98_set_ioport(com, isa_get_flags(dev)) == -1) { 1583 com->pc98_if_type = (isa_get_flags(dev) >> 24) & 0xff; 1584 port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; 1585 com->data_port = iobase + (com_data << port_shift); 1586 com->int_id_port = iobase + (com_iir << port_shift); 1587 com->modem_ctl_port = iobase + (com_mcr << port_shift); 1588 com->mcr_image = inb(com->modem_ctl_port); 1589 com->line_status_port = iobase + (com_lsr << port_shift); 1590 com->modem_status_port = iobase + (com_msr << port_shift); 1591 com->intr_ctl_port = iobase + (com_ier << port_shift); 1592 } 1593#else /* not PC98 */ 1594 com->data_port = iobase + com_data; 1595 com->int_id_port = iobase + com_iir; 1596 com->modem_ctl_port = iobase + com_mcr; 1597 com->mcr_image = inb(com->modem_ctl_port); 1598 com->line_status_port = iobase + com_lsr; 1599 com->modem_status_port = iobase + com_msr; 1600 com->intr_ctl_port = iobase + com_ier; 1601#endif 1602 1603 /* 1604 * We don't use all the flags from <sys/ttydefaults.h> since they 1605 * are only relevant for logins. It's important to have echo off 1606 * initially so that the line doesn't start blathering before the 1607 * echo flag can be turned off. 1608 */ 1609 com->it_in.c_iflag = 0; 1610 com->it_in.c_oflag = 0; 1611 com->it_in.c_cflag = TTYDEF_CFLAG; 1612 com->it_in.c_lflag = 0; 1613 if (unit == comconsole) { 1614#ifdef PC98 1615 if (IS_8251(com->pc98_if_type)) 1616 DELAY(100000); 1617#endif 1618 com->it_in.c_iflag = TTYDEF_IFLAG; 1619 com->it_in.c_oflag = TTYDEF_OFLAG; 1620 com->it_in.c_cflag = TTYDEF_CFLAG | CLOCAL; 1621 com->it_in.c_lflag = TTYDEF_LFLAG; 1622 com->lt_out.c_cflag = com->lt_in.c_cflag = CLOCAL; 1623 com->lt_out.c_ispeed = com->lt_out.c_ospeed = 1624 com->lt_in.c_ispeed = com->lt_in.c_ospeed = 1625 com->it_in.c_ispeed = com->it_in.c_ospeed = comdefaultrate; 1626 } else 1627 com->it_in.c_ispeed = com->it_in.c_ospeed = TTYDEF_SPEED; 1628 if (siosetwater(com, com->it_in.c_ispeed) != 0) { 1629 enable_intr(); 1630 free(com, M_DEVBUF); 1631 return (0); 1632 } 1633 enable_intr(); 1634 termioschars(&com->it_in); 1635 com->it_out = com->it_in; 1636 1637 /* attempt to determine UART type */ 1638 printf("sio%d: type", unit); 1639 1640 1641#ifndef PC98 1642#ifdef COM_MULTIPORT 1643 if (!COM_ISMULTIPORT(flags) && !COM_IIR_TXRDYBUG(flags)) 1644#else 1645 if (!COM_IIR_TXRDYBUG(flags)) 1646#endif 1647 { 1648 u_char scr; 1649 u_char scr1; 1650 u_char scr2; 1651 1652 scr = inb(iobase + com_scr); 1653 outb(iobase + com_scr, 0xa5); 1654 scr1 = inb(iobase + com_scr); 1655 outb(iobase + com_scr, 0x5a); 1656 scr2 = inb(iobase + com_scr); 1657 outb(iobase + com_scr, scr); 1658 if (scr1 != 0xa5 || scr2 != 0x5a) { 1659 printf(" 8250"); 1660 goto determined_type; 1661 } 1662 } 1663#endif /* !PC98 */ 1664#ifdef PC98 1665 if (IS_8251(com->pc98_if_type)) { 1666 com_int_TxRx_disable( com ); 1667 com_cflag_and_speed_set( com, com->it_in.c_cflag, comdefaultrate ); 1668 com_tiocm_bic( com, TIOCM_DTR|TIOCM_RTS|TIOCM_LE ); 1669 com_send_break_off( com ); 1670 printf(" 8251%s", if_8251_type[com->pc98_if_type & 0x0f].name); 1671 } else { 1672 outb(iobase + (com_fifo << port_shift), FIFO_ENABLE | FIFO_RX_HIGH); 1673#else 1674 outb(iobase + com_fifo, FIFO_ENABLE | FIFO_RX_HIGH); 1675#endif /* PC98 */ 1676 DELAY(100); 1677 com->st16650a = 0; 1678 switch (inb(com->int_id_port) & IIR_FIFO_MASK) { 1679 case FIFO_RX_LOW: 1680 printf(" 16450"); 1681 break; 1682 case FIFO_RX_MEDL: 1683 printf(" 16450?"); 1684 break; 1685 case FIFO_RX_MEDH: 1686 printf(" 16550?"); 1687 break; 1688 case FIFO_RX_HIGH: 1689 if (COM_NOFIFO(flags)) { 1690 printf(" 16550A fifo disabled"); 1691 } else { 1692 com->hasfifo = TRUE; 1693#ifdef PC98 1694 com->tx_fifo_size = 0; /* XXX flag conflicts. */ 1695 printf(" 16550A"); 1696#else 1697 if (COM_ST16650A(flags)) { 1698 com->st16650a = 1; 1699 com->tx_fifo_size = 32; 1700 printf(" ST16650A"); 1701 } else { 1702 com->tx_fifo_size = COM_FIFOSIZE(flags); 1703 printf(" 16550A"); 1704 } 1705#endif 1706 } 1707#ifdef PC98 1708 if (com->pc98_if_type == COM_IF_RSA98III) { 1709 com->tx_fifo_size = 2048; 1710 com->rsabase = isa_get_port(dev); 1711 outb(com->rsabase + rsa_ier, 0x00); 1712 outb(com->rsabase + rsa_frr, 0x00); 1713 } 1714#endif 1715 1716#ifdef COM_ESP 1717#ifdef PC98 1718 if (com->pc98_if_type == COM_IF_ESP98) 1719#endif 1720 for (espp = likely_esp_ports; *espp != 0; espp++) 1721 if (espattach(dev, com, *espp)) { 1722 com->tx_fifo_size = 1024; 1723 break; 1724 } 1725#endif 1726 if (!com->st16650a) { 1727 if (!com->tx_fifo_size) 1728 com->tx_fifo_size = 16; 1729 else 1730 printf(" lookalike with %d bytes FIFO", 1731 com->tx_fifo_size); 1732 } 1733 1734 break; 1735 } 1736 1737#ifdef PC98 1738 if (com->pc98_if_type == COM_IF_RSB3000) { 1739 /* Set RSB-2000/3000 Extended Buffer mode. */ 1740 u_char lcr; 1741 lcr = inb(iobase + (com_cfcr << port_shift)); 1742 outb(iobase + (com_cfcr << port_shift), lcr | CFCR_DLAB); 1743 outb(iobase + (com_emr << port_shift), EMR_EXBUFF | EMR_EFMODE); 1744 outb(iobase + (com_cfcr << port_shift), lcr); 1745 } 1746#endif 1747 1748#ifdef COM_ESP 1749 if (com->esp) { 1750 /* 1751 * Set 16550 compatibility mode. 1752 * We don't use the ESP_MODE_SCALE bit to increase the 1753 * fifo trigger levels because we can't handle large 1754 * bursts of input. 1755 * XXX flow control should be set in comparam(), not here. 1756 */ 1757#ifdef PC98 1758 outb(com->esp_port + ESP98_CMD1, ESP_SETMODE); 1759 outb(com->esp_port + ESP98_CMD2, ESP_MODE_RTS | ESP_MODE_FIFO); 1760#else 1761 outb(com->esp_port + ESP_CMD1, ESP_SETMODE); 1762 outb(com->esp_port + ESP_CMD2, ESP_MODE_RTS | ESP_MODE_FIFO); 1763#endif 1764 1765 /* Set RTS/CTS flow control. */ 1766#ifdef PC98 1767 outb(com->esp_port + ESP98_CMD1, ESP_SETFLOWTYPE); 1768 outb(com->esp_port + ESP98_CMD2, ESP_FLOW_RTS); 1769 outb(com->esp_port + ESP98_CMD2, ESP_FLOW_CTS); 1770#else 1771 outb(com->esp_port + ESP_CMD1, ESP_SETFLOWTYPE); 1772 outb(com->esp_port + ESP_CMD2, ESP_FLOW_RTS); 1773 outb(com->esp_port + ESP_CMD2, ESP_FLOW_CTS); 1774#endif 1775 1776 /* Set flow-control levels. */ 1777#ifdef PC98 1778 outb(com->esp_port + ESP98_CMD1, ESP_SETRXFLOW); 1779 outb(com->esp_port + ESP98_CMD2, HIBYTE(768)); 1780 outb(com->esp_port + ESP98_CMD2, LOBYTE(768)); 1781 outb(com->esp_port + ESP98_CMD2, HIBYTE(512)); 1782 outb(com->esp_port + ESP98_CMD2, LOBYTE(512)); 1783#else 1784 outb(com->esp_port + ESP_CMD1, ESP_SETRXFLOW); 1785 outb(com->esp_port + ESP_CMD2, HIBYTE(768)); 1786 outb(com->esp_port + ESP_CMD2, LOBYTE(768)); 1787 outb(com->esp_port + ESP_CMD2, HIBYTE(512)); 1788 outb(com->esp_port + ESP_CMD2, LOBYTE(512)); 1789#endif 1790 1791#ifdef PC98 1792 /* Set UART clock prescaler. */ 1793 outb(com->esp_port + ESP98_CMD1, ESP_SETCLOCK); 1794 outb(com->esp_port + ESP98_CMD2, 2); /* 4 times */ 1795#endif 1796 } 1797#endif /* COM_ESP */ 1798#ifdef PC98 1799 printf("%s", if_16550a_type[com->pc98_if_type & 0x0f].name); 1800 outb(iobase + (com_fifo << port_shift), 0); 1801#else 1802 outb(iobase + com_fifo, 0); 1803determined_type: ; 1804#endif 1805 1806#ifdef COM_MULTIPORT 1807 if (COM_ISMULTIPORT(flags)) { 1808 com->multiport = TRUE; 1809 printf(" (multiport"); 1810 if (unit == COM_MPMASTER(flags)) 1811 printf(" master"); 1812 printf(")"); 1813 com->no_irq = 1814 isa_get_irq(devclass_get_device 1815 (sio_devclass, COM_MPMASTER(flags))) < 0; 1816 } 1817#endif /* COM_MULTIPORT */ 1818#ifdef PC98 1819 } 1820#endif 1821 if (unit == comconsole) 1822 printf(", console"); 1823 if ( COM_IIR_TXRDYBUG(flags) ) 1824 printf(" with a bogus IIR_TXRDY register"); 1825 printf("\n"); 1826 1827#if 0 1828 s = spltty(); 1829 com_addr(unit) = com; 1830 splx(s); 1831#endif 1832 1833 if (!sio_registered) { 1834 register_swi(SWI_TTY, siopoll); 1835 sio_registered = TRUE; 1836 } 1837#ifdef DEVFS 1838 com->devfs_token_ttyd = devfs_add_devswf(&sio_cdevsw, 1839 unit, DV_CHR, 1840 UID_ROOT, GID_WHEEL, 0600, "ttyd%r", unit); 1841 com->devfs_token_ttyi = devfs_add_devswf(&sio_cdevsw, 1842 unit | CONTROL_INIT_STATE, DV_CHR, 1843 UID_ROOT, GID_WHEEL, 0600, "ttyid%r", unit); 1844 com->devfs_token_ttyl = devfs_add_devswf(&sio_cdevsw, 1845 unit | CONTROL_LOCK_STATE, DV_CHR, 1846 UID_ROOT, GID_WHEEL, 0600, "ttyld%r", unit); 1847 com->devfs_token_cuaa = devfs_add_devswf(&sio_cdevsw, 1848 unit | CALLOUT_MASK, DV_CHR, 1849 UID_UUCP, GID_DIALER, 0660, "cuaa%r", unit); 1850 com->devfs_token_cuai = devfs_add_devswf(&sio_cdevsw, 1851 unit | CALLOUT_MASK | CONTROL_INIT_STATE, DV_CHR, 1852 UID_UUCP, GID_DIALER, 0660, "cuaia%r", unit); 1853 com->devfs_token_cual = devfs_add_devswf(&sio_cdevsw, 1854 unit | CALLOUT_MASK | CONTROL_LOCK_STATE, DV_CHR, 1855 UID_UUCP, GID_DIALER, 0660, "cuala%r", unit); 1856#endif 1857 com->flags = isa_get_flags(dev); /* Heritate id_flags for later */ 1858 com->pps.ppscap = PPS_CAPTUREASSERT | PPS_CAPTURECLEAR; 1859 pps_init(&com->pps); 1860 1861 res = bus_alloc_resource(dev, SYS_RES_IRQ, &zero, 0ul, ~0ul, 1, 1862 RF_SHAREABLE | RF_ACTIVE); 1863 BUS_SETUP_INTR(device_get_parent(dev), dev, res, siointr, com, 1864 &ih); 1865 1866 return (0); 1867} 1868 1869static int 1870sioopen(dev, flag, mode, p) 1871 dev_t dev; 1872 int flag; 1873 int mode; 1874 struct proc *p; 1875{ 1876 struct com_s *com; 1877 int error; 1878 Port_t iobase; 1879 int mynor; 1880 int s; 1881 struct tty *tp; 1882 int unit; 1883#ifdef PC98 1884 int port_shift = 0; 1885#endif 1886 1887 mynor = minor(dev); 1888 unit = MINOR_TO_UNIT(mynor); 1889 if ((u_int) unit >= NSIOTOT || (com = com_addr(unit)) == NULL) 1890 return (ENXIO); 1891 if (com->gone) 1892 return (ENXIO); 1893 if (mynor & CONTROL_MASK) 1894 return (0); 1895#if 0 /* XXX */ 1896 tp = com->tp = sio_tty[unit] = ttymalloc(sio_tty[unit]); 1897#else 1898 tp = com->tp = &sio_tty[unit]; 1899#endif 1900 s = spltty(); 1901 1902#ifdef PC98 1903 if (!IS_8251(com->pc98_if_type)) 1904 port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; 1905#endif 1906 /* 1907 * We jump to this label after all non-interrupted sleeps to pick 1908 * up any changes of the device state. 1909 */ 1910open_top: 1911 while (com->state & CS_DTR_OFF) { 1912 error = tsleep(&com->dtr_wait, TTIPRI | PCATCH, "siodtr", 0); 1913 if (com_addr(unit) == NULL) 1914 return (ENXIO); 1915 if (error != 0 || com->gone) 1916 goto out; 1917 } 1918 if (tp->t_state & TS_ISOPEN) { 1919 /* 1920 * The device is open, so everything has been initialized. 1921 * Handle conflicts. 1922 */ 1923 if (mynor & CALLOUT_MASK) { 1924 if (!com->active_out) { 1925 error = EBUSY; 1926 goto out; 1927 } 1928 } else { 1929 if (com->active_out) { 1930 if (flag & O_NONBLOCK) { 1931 error = EBUSY; 1932 goto out; 1933 } 1934 error = tsleep(&com->active_out, 1935 TTIPRI | PCATCH, "siobi", 0); 1936 if (com_addr(unit) == NULL) 1937 return (ENXIO); 1938 if (error != 0 || com->gone) 1939 goto out; 1940 goto open_top; 1941 } 1942 } 1943 if (tp->t_state & TS_XCLUDE && 1944 suser(p->p_ucred, &p->p_acflag)) { 1945 error = EBUSY; 1946 goto out; 1947 } 1948 } else { 1949 /* 1950 * The device isn't open, so there are no conflicts. 1951 * Initialize it. Initialization is done twice in many 1952 * cases: to preempt sleeping callin opens if we are 1953 * callout, and to complete a callin open after DCD rises. 1954 */ 1955 tp->t_oproc = comstart; 1956 tp->t_param = comparam; 1957 tp->t_dev = dev; 1958 tp->t_termios = mynor & CALLOUT_MASK 1959 ? com->it_out : com->it_in; 1960#ifdef PC98 1961 if (!IS_8251(com->pc98_if_type)) 1962#endif 1963 (void)commctl(com, TIOCM_DTR | TIOCM_RTS, DMSET); 1964 com->poll = com->no_irq; 1965 com->poll_output = com->loses_outints; 1966 ++com->wopeners; 1967 error = comparam(tp, &tp->t_termios); 1968 --com->wopeners; 1969 if (error != 0) 1970 goto out; 1971#ifdef PC98 1972 if (IS_8251(com->pc98_if_type)) { 1973 com_tiocm_bis(com, TIOCM_DTR|TIOCM_RTS); 1974 pc98_msrint_start(dev); 1975 } 1976#endif 1977 /* 1978 * XXX we should goto open_top if comparam() slept. 1979 */ 1980 iobase = com->iobase; 1981 if (com->hasfifo) { 1982 /* 1983 * (Re)enable and drain fifos. 1984 * 1985 * Certain SMC chips cause problems if the fifos 1986 * are enabled while input is ready. Turn off the 1987 * fifo if necessary to clear the input. We test 1988 * the input ready bit after enabling the fifos 1989 * since we've already enabled them in comparam() 1990 * and to handle races between enabling and fresh 1991 * input. 1992 */ 1993 while (TRUE) { 1994#ifdef PC98 1995 outb(iobase + (com_fifo << port_shift), 1996 FIFO_RCV_RST | FIFO_XMT_RST 1997 | com->fifo_image); 1998 if (com->pc98_if_type == COM_IF_RSA98III) 1999 outb(com->rsabase + rsa_frr , 0x00); 2000#else 2001 outb(iobase + com_fifo, 2002 FIFO_RCV_RST | FIFO_XMT_RST 2003 | com->fifo_image); 2004#endif 2005 /* 2006 * XXX the delays are for superstitious 2007 * historical reasons. It must be less than 2008 * the character time at the maximum 2009 * supported speed (87 usec at 115200 bps 2010 * 8N1). Otherwise we might loop endlessly 2011 * if data is streaming in. We used to use 2012 * delays of 100. That usually worked 2013 * because DELAY(100) used to usually delay 2014 * for about 85 usec instead of 100. 2015 */ 2016 DELAY(50); 2017#ifndef PC98 2018 if (!(inb(com->line_status_port) & LSR_RXRDY)) 2019#else 2020 if (com->pc98_if_type == COM_IF_RSA98III 2021 ? !(inb(com->rsabase + rsa_srr) & 0x08) 2022 : !(inb(com->line_status_port) & LSR_RXRDY)) 2023#endif 2024 break; 2025#ifdef PC98 2026 outb(iobase + (com_fifo << port_shift), 0); 2027#else 2028 outb(iobase + com_fifo, 0); 2029#endif 2030 DELAY(50); 2031 (void) inb(com->data_port); 2032 } 2033 } 2034 2035 disable_intr(); 2036#ifdef PC98 2037 if (IS_8251(com->pc98_if_type)) { 2038 com_tiocm_bis(com, TIOCM_LE); 2039 com->pc98_prev_modem_status = pc98_get_modem_status(com); 2040 com_int_Rx_enable(com); 2041 } else { 2042#endif 2043 (void) inb(com->line_status_port); 2044 (void) inb(com->data_port); 2045 com->prev_modem_status = com->last_modem_status 2046 = inb(com->modem_status_port); 2047 if (COM_IIR_TXRDYBUG(com->flags)) { 2048 outb(com->intr_ctl_port, IER_ERXRDY | IER_ERLS 2049 | IER_EMSC); 2050 } else { 2051 outb(com->intr_ctl_port, IER_ERXRDY | IER_ETXRDY 2052 | IER_ERLS | IER_EMSC); 2053 } 2054#ifdef PC98 2055 if (com->pc98_if_type == COM_IF_RSA98III) { 2056 outb(com->rsabase + rsa_ier, 0x1d); 2057 outb(com->intr_ctl_port, IER_ERLS | IER_EMSC); 2058 } 2059#endif 2060#ifdef PC98 2061 } 2062#endif 2063 enable_intr(); 2064 /* 2065 * Handle initial DCD. Callout devices get a fake initial 2066 * DCD (trapdoor DCD). If we are callout, then any sleeping 2067 * callin opens get woken up and resume sleeping on "siobi" 2068 * instead of "siodcd". 2069 */ 2070 /* 2071 * XXX `mynor & CALLOUT_MASK' should be 2072 * `tp->t_cflag & (SOFT_CARRIER | TRAPDOOR_CARRIER) where 2073 * TRAPDOOR_CARRIER is the default initial state for callout 2074 * devices and SOFT_CARRIER is like CLOCAL except it hides 2075 * the true carrier. 2076 */ 2077#ifdef PC98 2078 if ((IS_8251(com->pc98_if_type) && 2079 (pc98_get_modem_status(com) & TIOCM_CAR)) || 2080 (!IS_8251(com->pc98_if_type) && 2081 (com->prev_modem_status & MSR_DCD)) || 2082 mynor & CALLOUT_MASK) 2083#else 2084 if (com->prev_modem_status & MSR_DCD || mynor & CALLOUT_MASK) 2085#endif 2086 (*linesw[tp->t_line].l_modem)(tp, 1); 2087 } 2088 /* 2089 * Wait for DCD if necessary. 2090 */ 2091 if (!(tp->t_state & TS_CARR_ON) && !(mynor & CALLOUT_MASK) 2092 && !(tp->t_cflag & CLOCAL) && !(flag & O_NONBLOCK)) { 2093 ++com->wopeners; 2094 error = tsleep(TSA_CARR_ON(tp), TTIPRI | PCATCH, "siodcd", 0); 2095 if (com_addr(unit) == NULL) 2096 return (ENXIO); 2097 --com->wopeners; 2098 if (error != 0 || com->gone) 2099 goto out; 2100 goto open_top; 2101 } 2102 error = (*linesw[tp->t_line].l_open)(dev, tp); 2103 disc_optim(tp, &tp->t_termios, com); 2104 if (tp->t_state & TS_ISOPEN && mynor & CALLOUT_MASK) 2105 com->active_out = TRUE; 2106 siosettimeout(); 2107out: 2108 splx(s); 2109 if (!(tp->t_state & TS_ISOPEN) && com->wopeners == 0) 2110 comhardclose(com); 2111 return (error); 2112} 2113 2114static int 2115sioclose(dev, flag, mode, p) 2116 dev_t dev; 2117 int flag; 2118 int mode; 2119 struct proc *p; 2120{ 2121 struct com_s *com; 2122 int mynor; 2123 int s; 2124 struct tty *tp; 2125 2126 mynor = minor(dev); 2127 if (mynor & CONTROL_MASK) 2128 return (0); 2129 com = com_addr(MINOR_TO_UNIT(mynor)); 2130 tp = com->tp; 2131 s = spltty(); 2132 (*linesw[tp->t_line].l_close)(tp, flag); 2133#ifdef PC98 2134 com->modem_checking = 0; 2135#endif 2136 disc_optim(tp, &tp->t_termios, com); 2137 siostop(tp, FREAD | FWRITE); 2138 comhardclose(com); 2139 ttyclose(tp); 2140 siosettimeout(); 2141 splx(s); 2142 if (com->gone) { 2143 printf("sio%d: gone\n", com->unit); 2144 s = spltty(); 2145#if 0 2146 com_addr(com->unit) = NULL; 2147#endif 2148 if (com->ibuf != NULL) 2149 free(com->ibuf, M_DEVBUF); 2150 bzero(tp, sizeof *tp); 2151 free(com, M_DEVBUF); 2152 splx(s); 2153 } 2154 return (0); 2155} 2156 2157static void 2158comhardclose(com) 2159 struct com_s *com; 2160{ 2161 Port_t iobase; 2162 int s; 2163 struct tty *tp; 2164 int unit; 2165#ifdef PC98 2166 int port_shift = 0; 2167#endif 2168 2169 unit = com->unit; 2170 iobase = com->iobase; 2171 s = spltty(); 2172 com->poll = FALSE; 2173 com->poll_output = FALSE; 2174 com->do_timestamp = FALSE; 2175 com->do_dcd_timestamp = FALSE; 2176 com->pps.ppsparam.mode = 0; 2177#ifdef PC98 2178 if (IS_8251(com->pc98_if_type)) 2179 com_send_break_off(com); 2180 else { 2181 port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; 2182 outb(iobase + (com_cfcr << port_shift), 2183 com->cfcr_image &= ~CFCR_SBREAK); 2184 } 2185#else 2186 outb(iobase + com_cfcr, com->cfcr_image &= ~CFCR_SBREAK); 2187#endif 2188 { 2189#ifdef PC98 2190 int tmp; 2191 if (IS_8251(com->pc98_if_type)) 2192 com_int_TxRx_disable(com); 2193 else 2194 outb(iobase + (com_ier << port_shift), 0); 2195 if (com->pc98_if_type == COM_IF_RSA98III) { 2196 outb(com->rsabase + rsa_ier, 0x00); 2197 } 2198#else 2199 outb(iobase + com_ier, 0); 2200#endif 2201 tp = com->tp; 2202#ifdef PC98 2203 if (IS_8251(com->pc98_if_type)) 2204 tmp = pc98_get_modem_status(com) & TIOCM_CAR; 2205 else 2206 tmp = com->prev_modem_status & MSR_DCD; 2207#endif 2208 if (tp->t_cflag & HUPCL 2209 /* 2210 * XXX we will miss any carrier drop between here and the 2211 * next open. Perhaps we should watch DCD even when the 2212 * port is closed; it is not sufficient to check it at 2213 * the next open because it might go up and down while 2214 * we're not watching. 2215 */ 2216 || !com->active_out 2217#ifdef PC98 2218 && !(tmp) 2219#else 2220 && !(com->prev_modem_status & MSR_DCD) 2221#endif 2222 && !(com->it_in.c_cflag & CLOCAL) 2223 || !(tp->t_state & TS_ISOPEN)) { 2224#ifdef PC98 2225 if (IS_8251(com->pc98_if_type)) 2226 com_tiocm_bic(com, TIOCM_DTR|TIOCM_RTS|TIOCM_LE); 2227 else 2228#endif 2229 (void)commctl(com, TIOCM_DTR, DMBIC); 2230 if (com->dtr_wait != 0 && !(com->state & CS_DTR_OFF)) { 2231 timeout(siodtrwakeup, com, com->dtr_wait); 2232 com->state |= CS_DTR_OFF; 2233 } 2234 } 2235#ifdef PC98 2236 else { 2237 if (IS_8251(com->pc98_if_type)) 2238 com_tiocm_bic(com, TIOCM_LE ); 2239 } 2240#endif 2241 } 2242 if (com->hasfifo) { 2243 /* 2244 * Disable fifos so that they are off after controlled 2245 * reboots. Some BIOSes fail to detect 16550s when the 2246 * fifos are enabled. 2247 */ 2248#ifdef PC98 2249 outb(iobase + (com_fifo << port_shift), 0); 2250#else 2251 outb(iobase + com_fifo, 0); 2252#endif 2253 } 2254 com->active_out = FALSE; 2255 wakeup(&com->active_out); 2256 wakeup(TSA_CARR_ON(tp)); /* restart any wopeners */ 2257 splx(s); 2258} 2259 2260static int 2261sioread(dev, uio, flag) 2262 dev_t dev; 2263 struct uio *uio; 2264 int flag; 2265{ 2266 int mynor; 2267 int unit; 2268 struct tty *tp; 2269 2270 mynor = minor(dev); 2271 if (mynor & CONTROL_MASK) 2272 return (ENODEV); 2273 unit = MINOR_TO_UNIT(mynor); 2274 if (com_addr(unit)->gone) 2275 return (ENODEV); 2276 tp = com_addr(unit)->tp; 2277 return ((*linesw[tp->t_line].l_read)(tp, uio, flag)); 2278} 2279 2280static int 2281siowrite(dev, uio, flag) 2282 dev_t dev; 2283 struct uio *uio; 2284 int flag; 2285{ 2286 int mynor; 2287 struct tty *tp; 2288 int unit; 2289 2290 mynor = minor(dev); 2291 if (mynor & CONTROL_MASK) 2292 return (ENODEV); 2293 2294 unit = MINOR_TO_UNIT(mynor); 2295 if (com_addr(unit)->gone) 2296 return (ENODEV); 2297 tp = com_addr(unit)->tp; 2298 /* 2299 * (XXX) We disallow virtual consoles if the physical console is 2300 * a serial port. This is in case there is a display attached that 2301 * is not the console. In that situation we don't need/want the X 2302 * server taking over the console. 2303 */ 2304 if (constty != NULL && unit == comconsole) 2305 constty = NULL; 2306 return ((*linesw[tp->t_line].l_write)(tp, uio, flag)); 2307} 2308 2309static void 2310siobusycheck(chan) 2311 void *chan; 2312{ 2313 struct com_s *com; 2314 int s; 2315 2316 com = (struct com_s *)chan; 2317 2318 /* 2319 * Clear TS_BUSY if low-level output is complete. 2320 * spl locking is sufficient because siointr1() does not set CS_BUSY. 2321 * If siointr1() clears CS_BUSY after we look at it, then we'll get 2322 * called again. Reading the line status port outside of siointr1() 2323 * is safe because CS_BUSY is clear so there are no output interrupts 2324 * to lose. 2325 */ 2326 s = spltty(); 2327 if (com->state & CS_BUSY) 2328 com->extra_state &= ~CSE_BUSYCHECK; /* False alarm. */ 2329#ifdef PC98 2330 else if ((IS_8251(com->pc98_if_type) && 2331 (inb(com->sts_port) & (STS8251_TxRDY | STS8251_TxEMP)) 2332 == (STS8251_TxRDY | STS8251_TxEMP)) || 2333 (inb(com->line_status_port) & (LSR_TSRE | LSR_TXRDY)) 2334 == (LSR_TSRE | LSR_TXRDY)) { 2335#else 2336 else if ((inb(com->line_status_port) & (LSR_TSRE | LSR_TXRDY)) 2337 == (LSR_TSRE | LSR_TXRDY)) { 2338#endif 2339 com->tp->t_state &= ~TS_BUSY; 2340 ttwwakeup(com->tp); 2341 com->extra_state &= ~CSE_BUSYCHECK; 2342 } else 2343 timeout(siobusycheck, com, hz / 100); 2344 splx(s); 2345} 2346 2347static void 2348siodtrwakeup(chan) 2349 void *chan; 2350{ 2351 struct com_s *com; 2352 2353 com = (struct com_s *)chan; 2354 com->state &= ~CS_DTR_OFF; 2355 wakeup(&com->dtr_wait); 2356} 2357 2358static void 2359sioinput(com) 2360 struct com_s *com; 2361{ 2362 u_char *buf; 2363 int incc; 2364 u_char line_status; 2365 int recv_data; 2366 struct tty *tp; 2367#ifdef PC98 2368 u_char tmp; 2369#endif 2370 2371 buf = com->ibuf; 2372 tp = com->tp; 2373 if (!(tp->t_state & TS_ISOPEN) || !(tp->t_cflag & CREAD)) { 2374 com_events -= (com->iptr - com->ibuf); 2375 com->iptr = com->ibuf; 2376 return; 2377 } 2378 if (tp->t_state & TS_CAN_BYPASS_L_RINT) { 2379 /* 2380 * Avoid the grotesquely inefficient lineswitch routine 2381 * (ttyinput) in "raw" mode. It usually takes about 450 2382 * instructions (that's without canonical processing or echo!). 2383 * slinput is reasonably fast (usually 40 instructions plus 2384 * call overhead). 2385 */ 2386 do { 2387 enable_intr(); 2388 incc = com->iptr - buf; 2389 if (tp->t_rawq.c_cc + incc > tp->t_ihiwat 2390 && (com->state & CS_RTS_IFLOW 2391 || tp->t_iflag & IXOFF) 2392 && !(tp->t_state & TS_TBLOCK)) 2393 ttyblock(tp); 2394 com->delta_error_counts[CE_TTY_BUF_OVERFLOW] 2395 += b_to_q((char *)buf, incc, &tp->t_rawq); 2396 buf += incc; 2397 tk_nin += incc; 2398 tk_rawcc += incc; 2399 tp->t_rawcc += incc; 2400 ttwakeup(tp); 2401 if (tp->t_state & TS_TTSTOP 2402 && (tp->t_iflag & IXANY 2403 || tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { 2404 tp->t_state &= ~TS_TTSTOP; 2405 tp->t_lflag &= ~FLUSHO; 2406 comstart(tp); 2407 } 2408 disable_intr(); 2409 } while (buf < com->iptr); 2410 } else { 2411 do { 2412 enable_intr(); 2413 line_status = buf[com->ierroff]; 2414 recv_data = *buf++; 2415 if (line_status 2416 & (LSR_BI | LSR_FE | LSR_OE | LSR_PE)) { 2417 if (line_status & LSR_BI) 2418 recv_data |= TTY_BI; 2419 if (line_status & LSR_FE) 2420 recv_data |= TTY_FE; 2421 if (line_status & LSR_OE) 2422 recv_data |= TTY_OE; 2423 if (line_status & LSR_PE) 2424 recv_data |= TTY_PE; 2425 } 2426 (*linesw[tp->t_line].l_rint)(recv_data, tp); 2427 disable_intr(); 2428 } while (buf < com->iptr); 2429 } 2430 com_events -= (com->iptr - com->ibuf); 2431 com->iptr = com->ibuf; 2432 2433 /* 2434 * There is now room for another low-level buffer full of input, 2435 * so enable RTS if it is now disabled and there is room in the 2436 * high-level buffer. 2437 */ 2438#ifdef PC98 2439 if (IS_8251(com->pc98_if_type)) 2440 tmp = com_tiocm_get(com) & TIOCM_RTS; 2441 else 2442 tmp = com->mcr_image & MCR_RTS; 2443 if ((com->state & CS_RTS_IFLOW) && !(tmp) && 2444 !(tp->t_state & TS_TBLOCK)) 2445 if (IS_8251(com->pc98_if_type)) 2446 com_tiocm_bis(com, TIOCM_RTS); 2447 else 2448 outb(com->modem_ctl_port, com->mcr_image |= MCR_RTS); 2449#else 2450 if ((com->state & CS_RTS_IFLOW) && !(com->mcr_image & MCR_RTS) && 2451 !(tp->t_state & TS_TBLOCK)) 2452 outb(com->modem_ctl_port, com->mcr_image |= MCR_RTS); 2453#endif 2454} 2455 2456void 2457siointr(arg) 2458 void *arg; 2459{ 2460#ifndef COM_MULTIPORT 2461 COM_LOCK(); 2462 siointr1((struct com_s *) arg); 2463 COM_UNLOCK(); 2464#else /* COM_MULTIPORT */ 2465 bool_t possibly_more_intrs; 2466#ifdef PC98 2467 u_char rsa_buf_status; 2468#endif 2469 2470 /* 2471 * Loop until there is no activity on any port. This is necessary 2472 * to get an interrupt edge more than to avoid another interrupt. 2473 * If the IRQ signal is just an OR of the IRQ signals from several 2474 * devices, then the edge from one may be lost because another is 2475 * on. 2476 */ 2477 COM_LOCK(); 2478 do { 2479 possibly_more_intrs = FALSE; 2480 for (unit = 0; unit < NSIOTOT; ++unit) { 2481 com = com_addr(unit); 2482 /* 2483 * XXX COM_LOCK(); 2484 * would it work here, or be counter-productive? 2485 */ 2486#ifdef PC98 2487 if (com != NULL 2488 && !com->gone 2489 && IS_8251(com->pc98_if_type)){ 2490 siointr1(com); 2491 } else 2492#endif /* PC98 */ 2493#ifdef PC98 2494 if (com != NULL 2495 && !com->gone 2496 && com->pc98_if_type == COM_IF_RSA98III) { 2497 rsa_buf_status = inb(com->rsabase + rsa_srr) & 0xc9; 2498 if ((rsa_buf_status & 0xc8) 2499 || !(rsa_buf_status & 0x01)) { 2500 siointr1(com); 2501 if(rsa_buf_status 2502 != (inb(com->rsabase + rsa_srr) & 0xc9)) 2503 possibly_more_intrs = TRUE; 2504 } 2505 } else 2506#endif 2507 if (com != NULL 2508 && !com->gone 2509 && (inb(com->int_id_port) & IIR_IMASK) 2510 != IIR_NOPEND) { 2511 siointr1(com); 2512 possibly_more_intrs = TRUE; 2513 } 2514 /* XXX COM_UNLOCK(); */ 2515 } 2516 } while (possibly_more_intrs); 2517 COM_UNLOCK(); 2518#endif /* COM_MULTIPORT */ 2519} 2520 2521static void 2522siointr1(com) 2523 struct com_s *com; 2524{ 2525 u_char line_status; 2526 u_char modem_status; 2527 u_char *ioptr; 2528 u_char recv_data; 2529 u_char int_ctl; 2530 u_char int_ctl_new; 2531 struct timecounter *tc; 2532 u_int count; 2533 2534#ifdef PC98 2535 u_char tmp=0; 2536 u_char rsa_buf_status = 0; 2537 int rsa_tx_fifo_size=0; 2538 recv_data=0; 2539#endif /* PC98 */ 2540 2541 int_ctl = inb(com->intr_ctl_port); 2542 int_ctl_new = int_ctl; 2543 2544 while (!com->gone) { 2545#ifdef PC98 2546status_read:; 2547 if (IS_8251(com->pc98_if_type)) { 2548 tmp = inb(com->sts_port); 2549more_intr: 2550 line_status = 0; 2551 if (tmp & STS8251_TxRDY) line_status |= LSR_TXRDY; 2552 if (tmp & STS8251_RxRDY) line_status |= LSR_RXRDY; 2553 if (tmp & STS8251_TxEMP) line_status |= LSR_TSRE; 2554 if (tmp & STS8251_PE) line_status |= LSR_PE; 2555 if (tmp & STS8251_OE) line_status |= LSR_OE; 2556 if (tmp & STS8251_FE) line_status |= LSR_FE; 2557 if (tmp & STS8251_BD_SD) line_status |= LSR_BI; 2558 } else 2559#endif /* PC98 */ 2560 if (com->pps.ppsparam.mode & PPS_CAPTUREBOTH) { 2561 modem_status = inb(com->modem_status_port); 2562 if ((modem_status ^ com->last_modem_status) & MSR_DCD) { 2563 tc = timecounter; 2564 count = tc->tc_get_timecount(tc); 2565 pps_event(&com->pps, tc, count, 2566 (modem_status & MSR_DCD) ? 2567 PPS_CAPTURECLEAR : PPS_CAPTUREASSERT); 2568 } 2569 } 2570 line_status = inb(com->line_status_port); 2571#ifdef PC98 2572 if (com->pc98_if_type == COM_IF_RSA98III) 2573 rsa_buf_status = inb(com->rsabase + rsa_srr); 2574#endif /* PC98 */ 2575 2576 /* input event? (check first to help avoid overruns) */ 2577#ifndef PC98 2578 while (line_status & LSR_RCV_MASK) { 2579#else 2580 while ((line_status & LSR_RCV_MASK) 2581 || (com->pc98_if_type == COM_IF_RSA98III 2582 && (rsa_buf_status & 0x08))) { 2583#endif /* PC98 */ 2584 /* break/unnattached error bits or real input? */ 2585#ifdef PC98 2586 if (IS_8251(com->pc98_if_type)) { 2587 recv_data = inb(com->data_port); 2588 if (tmp & 0x78) { 2589 pc98_i8251_or_cmd(com,CMD8251_ER); 2590 recv_data = 0; 2591 } 2592 } else { 2593#endif /* PC98 */ 2594#ifdef PC98 2595 if (com->pc98_if_type == COM_IF_RSA98III) { 2596 if (!(rsa_buf_status & 0x08)) 2597 recv_data = 0; 2598 else { 2599 recv_data = inb(com->data_port); 2600 } 2601 } else 2602#endif 2603 if (!(line_status & LSR_RXRDY)) 2604 recv_data = 0; 2605 else 2606 recv_data = inb(com->data_port); 2607#ifdef PC98 2608 } 2609#endif 2610 if (line_status & (LSR_BI | LSR_FE | LSR_PE)) { 2611 /* 2612 * Don't store BI if IGNBRK or FE/PE if IGNPAR. 2613 * Otherwise, push the work to a higher level 2614 * (to handle PARMRK) if we're bypassing. 2615 * Otherwise, convert BI/FE and PE+INPCK to 0. 2616 * 2617 * This makes bypassing work right in the 2618 * usual "raw" case (IGNBRK set, and IGNPAR 2619 * and INPCK clear). 2620 * 2621 * Note: BI together with FE/PE means just BI. 2622 */ 2623 if (line_status & LSR_BI) { 2624#if defined(DDB) && defined(BREAK_TO_DEBUGGER) 2625 if (com->unit == comconsole) { 2626 breakpoint(); 2627 goto cont; 2628 } 2629#endif 2630 if (com->tp == NULL 2631 || com->tp->t_iflag & IGNBRK) 2632 goto cont; 2633 } else { 2634 if (com->tp == NULL 2635 || com->tp->t_iflag & IGNPAR) 2636 goto cont; 2637 } 2638 if (com->tp->t_state & TS_CAN_BYPASS_L_RINT 2639 && (line_status & (LSR_BI | LSR_FE) 2640 || com->tp->t_iflag & INPCK)) 2641 recv_data = 0; 2642 } 2643 ++com->bytes_in; 2644 if (com->hotchar != 0 && recv_data == com->hotchar) 2645 setsofttty(); 2646 ioptr = com->iptr; 2647 if (ioptr >= com->ibufend) 2648 CE_RECORD(com, CE_INTERRUPT_BUF_OVERFLOW); 2649 else { 2650 if (com->do_timestamp) 2651 microtime(&com->timestamp); 2652 ++com_events; 2653 schedsofttty(); 2654#if 0 /* for testing input latency vs efficiency */ 2655if (com->iptr - com->ibuf == 8) 2656 setsofttty(); 2657#endif 2658 ioptr[0] = recv_data; 2659 ioptr[com->ierroff] = line_status; 2660 com->iptr = ++ioptr; 2661 if (ioptr == com->ihighwater 2662 && com->state & CS_RTS_IFLOW) 2663#ifdef PC98 2664 if (IS_8251(com->pc98_if_type)) 2665 com_tiocm_bic(com, TIOCM_RTS); 2666 else 2667#endif 2668 outb(com->modem_ctl_port, 2669 com->mcr_image &= ~MCR_RTS); 2670 if (line_status & LSR_OE) 2671 CE_RECORD(com, CE_OVERRUN); 2672 } 2673cont: 2674 /* 2675 * "& 0x7F" is to avoid the gcc-1.40 generating a slow 2676 * jump from the top of the loop to here 2677 */ 2678#ifdef PC98 2679 if (IS_8251(com->pc98_if_type)) 2680 goto status_read; 2681 else 2682#endif 2683 line_status = inb(com->line_status_port) & 0x7F; 2684#ifdef PC98 2685 if (com->pc98_if_type == COM_IF_RSA98III) 2686 rsa_buf_status = inb(com->rsabase + rsa_srr); 2687#endif /* PC98 */ 2688 } 2689 2690 /* modem status change? (always check before doing output) */ 2691#ifdef PC98 2692 if (!IS_8251(com->pc98_if_type)) { 2693#endif 2694 modem_status = inb(com->modem_status_port); 2695 if (modem_status != com->last_modem_status) { 2696 if (com->do_dcd_timestamp 2697 && !(com->last_modem_status & MSR_DCD) 2698 && modem_status & MSR_DCD) 2699 microtime(&com->dcd_timestamp); 2700 2701 /* 2702 * Schedule high level to handle DCD changes. Note 2703 * that we don't use the delta bits anywhere. Some 2704 * UARTs mess them up, and it's easy to remember the 2705 * previous bits and calculate the delta. 2706 */ 2707 com->last_modem_status = modem_status; 2708 if (!(com->state & CS_CHECKMSR)) { 2709 com_events += LOTS_OF_EVENTS; 2710 com->state |= CS_CHECKMSR; 2711 setsofttty(); 2712 } 2713 2714 /* handle CTS change immediately for crisp flow ctl */ 2715 if (com->state & CS_CTS_OFLOW) { 2716 if (modem_status & MSR_CTS) 2717 com->state |= CS_ODEVREADY; 2718 else 2719 com->state &= ~CS_ODEVREADY; 2720 } 2721 } 2722#ifdef PC98 2723 } 2724#endif 2725 2726 /* output queued and everything ready? */ 2727#ifndef PC98 2728 if (line_status & LSR_TXRDY 2729 && com->state >= (CS_BUSY | CS_TTGO | CS_ODEVREADY)) { 2730#else 2731 if (((com->pc98_if_type == COM_IF_RSA98III) 2732 ? (rsa_buf_status & 0x02) 2733 : (line_status & LSR_TXRDY)) 2734 && com->state >= (CS_BUSY | CS_TTGO | CS_ODEVREADY)) { 2735#endif 2736 ioptr = com->obufq.l_head; 2737 if (com->tx_fifo_size > 1) { 2738 u_int ocount; 2739 2740 ocount = com->obufq.l_tail - ioptr; 2741#ifdef PC98 2742 if (com->pc98_if_type == COM_IF_RSA98III) { 2743 rsa_buf_status = inb(com->rsabase + rsa_srr); 2744 rsa_tx_fifo_size = 1024; 2745 if (!(rsa_buf_status & 0x01)) 2746 rsa_tx_fifo_size = 2048; 2747 if (ocount > rsa_tx_fifo_size) 2748 ocount = rsa_tx_fifo_size; 2749 } else 2750#endif 2751 if (ocount > com->tx_fifo_size) 2752 ocount = com->tx_fifo_size; 2753 com->bytes_out += ocount; 2754 do 2755 outb(com->data_port, *ioptr++); 2756 while (--ocount != 0); 2757 } else { 2758 outb(com->data_port, *ioptr++); 2759 ++com->bytes_out; 2760 } 2761#ifdef PC98 2762 if (IS_8251(com->pc98_if_type)) 2763 if (!(pc98_check_i8251_interrupt(com) & IEN_TxFLAG)) 2764 com_int_Tx_enable(com); 2765#endif 2766 com->obufq.l_head = ioptr; 2767 if (COM_IIR_TXRDYBUG(com->flags)) { 2768 int_ctl_new = int_ctl | IER_ETXRDY; 2769 } 2770 if (ioptr >= com->obufq.l_tail) { 2771 struct lbq *qp; 2772 2773 qp = com->obufq.l_next; 2774 qp->l_queued = FALSE; 2775 qp = qp->l_next; 2776 if (qp != NULL) { 2777 com->obufq.l_head = qp->l_head; 2778 com->obufq.l_tail = qp->l_tail; 2779 com->obufq.l_next = qp; 2780 } else { 2781 /* output just completed */ 2782 if ( COM_IIR_TXRDYBUG(com->flags) ) { 2783 int_ctl_new = int_ctl & ~IER_ETXRDY; 2784 } 2785 com->state &= ~CS_BUSY; 2786#if defined(PC98) 2787 if (IS_8251(com->pc98_if_type)) 2788 if ( pc98_check_i8251_interrupt(com) & IEN_TxFLAG ) 2789 com_int_Tx_disable(com); 2790#endif 2791 } 2792 if (!(com->state & CS_ODONE)) { 2793 com_events += LOTS_OF_EVENTS; 2794 com->state |= CS_ODONE; 2795 setsofttty(); /* handle at high level ASAP */ 2796 } 2797 } 2798 if ( COM_IIR_TXRDYBUG(com->flags) && (int_ctl != int_ctl_new)) { 2799#ifdef PC98 2800 if (com->pc98_if_type == COM_IF_RSA98III) { 2801 int_ctl_new &= ~(IER_ETXRDY | IER_ERXRDY); 2802 outb(com->intr_ctl_port, int_ctl_new); 2803 outb(com->rsabase + rsa_ier, 0x1d); 2804 } else 2805#endif 2806 outb(com->intr_ctl_port, int_ctl_new); 2807 } 2808 } 2809#ifdef PC98 2810 else if (line_status & LSR_TXRDY) { 2811 if (IS_8251(com->pc98_if_type)) 2812 if ( pc98_check_i8251_interrupt(com) & IEN_TxFLAG ) 2813 com_int_Tx_disable(com); 2814 } 2815 if (IS_8251(com->pc98_if_type)) 2816 if ((tmp = inb(com->sts_port)) & STS8251_RxRDY) 2817 goto more_intr; 2818#endif 2819 2820 /* finished? */ 2821#ifndef COM_MULTIPORT 2822#ifdef PC98 2823 if (IS_8251(com->pc98_if_type)) 2824 return; 2825#endif 2826 if ((inb(com->int_id_port) & IIR_IMASK) == IIR_NOPEND) 2827#endif /* COM_MULTIPORT */ 2828 return; 2829 } 2830} 2831 2832static int 2833sioioctl(dev, cmd, data, flag, p) 2834 dev_t dev; 2835 u_long cmd; 2836 caddr_t data; 2837 int flag; 2838 struct proc *p; 2839{ 2840 struct com_s *com; 2841 int error; 2842 Port_t iobase; 2843 int mynor; 2844 int s; 2845 struct tty *tp; 2846#if defined(COMPAT_43) || defined(COMPAT_SUNOS) 2847 u_long oldcmd; 2848 struct termios term; 2849#endif 2850 2851 mynor = minor(dev); 2852 com = com_addr(MINOR_TO_UNIT(mynor)); 2853 if (com->gone) 2854 return (ENODEV); 2855 iobase = com->iobase; 2856 if (mynor & CONTROL_MASK) { 2857 struct termios *ct; 2858 2859 switch (mynor & CONTROL_MASK) { 2860 case CONTROL_INIT_STATE: 2861 ct = mynor & CALLOUT_MASK ? &com->it_out : &com->it_in; 2862 break; 2863 case CONTROL_LOCK_STATE: 2864 ct = mynor & CALLOUT_MASK ? &com->lt_out : &com->lt_in; 2865 break; 2866 default: 2867 return (ENODEV); /* /dev/nodev */ 2868 } 2869 switch (cmd) { 2870 case TIOCSETA: 2871 error = suser(p->p_ucred, &p->p_acflag); 2872 if (error != 0) 2873 return (error); 2874 *ct = *(struct termios *)data; 2875 return (0); 2876 case TIOCGETA: 2877 *(struct termios *)data = *ct; 2878 return (0); 2879 case TIOCGETD: 2880 *(int *)data = TTYDISC; 2881 return (0); 2882 case TIOCGWINSZ: 2883 bzero(data, sizeof(struct winsize)); 2884 return (0); 2885 default: 2886 return (ENOTTY); 2887 } 2888 } 2889 tp = com->tp; 2890#if defined(COMPAT_43) || defined(COMPAT_SUNOS) 2891 term = tp->t_termios; 2892 oldcmd = cmd; 2893 error = ttsetcompat(tp, &cmd, data, &term); 2894 if (error != 0) 2895 return (error); 2896 if (cmd != oldcmd) 2897 data = (caddr_t)&term; 2898#endif 2899 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) { 2900 int cc; 2901 struct termios *dt = (struct termios *)data; 2902 struct termios *lt = mynor & CALLOUT_MASK 2903 ? &com->lt_out : &com->lt_in; 2904 2905 dt->c_iflag = (tp->t_iflag & lt->c_iflag) 2906 | (dt->c_iflag & ~lt->c_iflag); 2907 dt->c_oflag = (tp->t_oflag & lt->c_oflag) 2908 | (dt->c_oflag & ~lt->c_oflag); 2909 dt->c_cflag = (tp->t_cflag & lt->c_cflag) 2910 | (dt->c_cflag & ~lt->c_cflag); 2911 dt->c_lflag = (tp->t_lflag & lt->c_lflag) 2912 | (dt->c_lflag & ~lt->c_lflag); 2913 for (cc = 0; cc < NCCS; ++cc) 2914 if (lt->c_cc[cc] != 0) 2915 dt->c_cc[cc] = tp->t_cc[cc]; 2916 if (lt->c_ispeed != 0) 2917 dt->c_ispeed = tp->t_ispeed; 2918 if (lt->c_ospeed != 0) 2919 dt->c_ospeed = tp->t_ospeed; 2920 } 2921 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); 2922 if (error != ENOIOCTL) 2923 return (error); 2924 s = spltty(); 2925 error = ttioctl(tp, cmd, data, flag); 2926 disc_optim(tp, &tp->t_termios, com); 2927 if (error != ENOIOCTL) { 2928 splx(s); 2929 return (error); 2930 } 2931#ifdef PC98 2932 if (IS_8251(com->pc98_if_type)) { 2933 switch (cmd) { 2934 case TIOCSBRK: 2935 com_send_break_on( com ); 2936 break; 2937 case TIOCCBRK: 2938 com_send_break_off( com ); 2939 break; 2940 case TIOCSDTR: 2941 com_tiocm_bis(com, TIOCM_DTR | TIOCM_RTS ); 2942 break; 2943 case TIOCCDTR: 2944 com_tiocm_bic(com, TIOCM_DTR); 2945 break; 2946 /* 2947 * XXX should disallow changing MCR_RTS if CS_RTS_IFLOW is set. The 2948 * changes get undone on the next call to comparam(). 2949 */ 2950 case TIOCMSET: 2951 com_tiocm_set( com, *(int *)data ); 2952 break; 2953 case TIOCMBIS: 2954 com_tiocm_bis( com, *(int *)data ); 2955 break; 2956 case TIOCMBIC: 2957 com_tiocm_bic( com, *(int *)data ); 2958 break; 2959 case TIOCMGET: 2960 *(int *)data = com_tiocm_get(com); 2961 break; 2962 case TIOCMSDTRWAIT: 2963 /* must be root since the wait applies to following logins */ 2964 error = suser(p->p_ucred, &p->p_acflag); 2965 if (error != 0) { 2966 splx(s); 2967 return (error); 2968 } 2969 com->dtr_wait = *(int *)data * hz / 100; 2970 break; 2971 case TIOCMGDTRWAIT: 2972 *(int *)data = com->dtr_wait * 100 / hz; 2973 break; 2974 case TIOCTIMESTAMP: 2975 com->do_timestamp = TRUE; 2976 *(struct timeval *)data = com->timestamp; 2977 break; 2978 case TIOCDCDTIMESTAMP: 2979 com->do_dcd_timestamp = TRUE; 2980 *(struct timeval *)data = com->dcd_timestamp; 2981 break; 2982 default: 2983 splx(s); 2984 return (ENOTTY); 2985 } 2986 } else { 2987 int port_shift; 2988 port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; 2989#endif 2990 switch (cmd) { 2991 case TIOCSBRK: 2992#ifdef PC98 2993 outb(iobase + (com_cfcr << port_shift), 2994 com->cfcr_image |= CFCR_SBREAK); 2995#else 2996 outb(iobase + com_cfcr, com->cfcr_image |= CFCR_SBREAK); 2997#endif 2998 break; 2999 case TIOCCBRK: 3000#ifdef PC98 3001 outb(iobase + (com_cfcr << port_shift), 3002 com->cfcr_image &= ~CFCR_SBREAK); 3003#else 3004 outb(iobase + com_cfcr, com->cfcr_image &= ~CFCR_SBREAK); 3005#endif 3006 break; 3007 case TIOCSDTR: 3008 (void)commctl(com, TIOCM_DTR, DMBIS); 3009 break; 3010 case TIOCCDTR: 3011 (void)commctl(com, TIOCM_DTR, DMBIC); 3012 break; 3013 /* 3014 * XXX should disallow changing MCR_RTS if CS_RTS_IFLOW is set. The 3015 * changes get undone on the next call to comparam(). 3016 */ 3017 case TIOCMSET: 3018 (void)commctl(com, *(int *)data, DMSET); 3019 break; 3020 case TIOCMBIS: 3021 (void)commctl(com, *(int *)data, DMBIS); 3022 break; 3023 case TIOCMBIC: 3024 (void)commctl(com, *(int *)data, DMBIC); 3025 break; 3026 case TIOCMGET: 3027 *(int *)data = commctl(com, 0, DMGET); 3028 break; 3029 case TIOCMSDTRWAIT: 3030 /* must be root since the wait applies to following logins */ 3031 error = suser(p->p_ucred, &p->p_acflag); 3032 if (error != 0) { 3033 splx(s); 3034 return (error); 3035 } 3036 com->dtr_wait = *(int *)data * hz / 100; 3037 break; 3038 case TIOCMGDTRWAIT: 3039 *(int *)data = com->dtr_wait * 100 / hz; 3040 break; 3041 case TIOCTIMESTAMP: 3042 com->do_timestamp = TRUE; 3043 *(struct timeval *)data = com->timestamp; 3044 break; 3045 case TIOCDCDTIMESTAMP: 3046 com->do_dcd_timestamp = TRUE; 3047 *(struct timeval *)data = com->dcd_timestamp; 3048 break; 3049 default: 3050 splx(s); 3051 error = pps_ioctl(cmd, data, &com->pps); 3052 if (error == ENODEV) 3053 error = ENOTTY; 3054 return (error); 3055 } 3056#ifdef PC98 3057 } 3058#endif 3059 splx(s); 3060 return (0); 3061} 3062 3063static void 3064siopoll() 3065{ 3066 int unit; 3067 3068 if (com_events == 0) 3069 return; 3070repeat: 3071 for (unit = 0; unit < NSIOTOT; ++unit) { 3072 struct com_s *com; 3073 int incc; 3074 struct tty *tp; 3075 3076 com = com_addr(unit); 3077 if (com == NULL) 3078 continue; 3079 tp = com->tp; 3080 if (tp == NULL || com->gone) { 3081 /* 3082 * Discard any events related to never-opened or 3083 * going-away devices. 3084 */ 3085 disable_intr(); 3086 incc = com->iptr - com->ibuf; 3087 com->iptr = com->ibuf; 3088 if (com->state & CS_CHECKMSR) { 3089 incc += LOTS_OF_EVENTS; 3090 com->state &= ~CS_CHECKMSR; 3091 } 3092 com_events -= incc; 3093 enable_intr(); 3094 continue; 3095 } 3096 if (com->iptr != com->ibuf) { 3097 disable_intr(); 3098 sioinput(com); 3099 enable_intr(); 3100 } 3101 if (com->state & CS_CHECKMSR) { 3102 u_char delta_modem_status; 3103 3104#ifdef PC98 3105 if (!IS_8251(com->pc98_if_type)) { 3106#endif 3107 disable_intr(); 3108 delta_modem_status = com->last_modem_status 3109 ^ com->prev_modem_status; 3110 com->prev_modem_status = com->last_modem_status; 3111 com_events -= LOTS_OF_EVENTS; 3112 com->state &= ~CS_CHECKMSR; 3113 enable_intr(); 3114 if (delta_modem_status & MSR_DCD) 3115 (*linesw[tp->t_line].l_modem) 3116 (tp, com->prev_modem_status & MSR_DCD); 3117#ifdef PC98 3118 } 3119#endif 3120 } 3121 if (com->state & CS_ODONE) { 3122 disable_intr(); 3123 com_events -= LOTS_OF_EVENTS; 3124 com->state &= ~CS_ODONE; 3125 enable_intr(); 3126 if (!(com->state & CS_BUSY) 3127 && !(com->extra_state & CSE_BUSYCHECK)) { 3128 timeout(siobusycheck, com, hz / 100); 3129 com->extra_state |= CSE_BUSYCHECK; 3130 } 3131 (*linesw[tp->t_line].l_start)(tp); 3132 } 3133 if (com_events == 0) 3134 break; 3135 } 3136 if (com_events >= LOTS_OF_EVENTS) 3137 goto repeat; 3138} 3139 3140static int 3141comparam(tp, t) 3142 struct tty *tp; 3143 struct termios *t; 3144{ 3145 u_int cfcr; 3146 int cflag; 3147 struct com_s *com; 3148 int divisor; 3149 u_char dlbh; 3150 u_char dlbl; 3151 Port_t iobase; 3152 int s; 3153 int unit; 3154#ifdef PC98 3155 int port_shift = 0; 3156 u_char param = 0; 3157#endif 3158 3159#ifdef PC98 3160 cfcr = 0; 3161 unit = DEV_TO_UNIT(tp->t_dev); 3162 com = com_addr(unit); 3163 iobase = com->iobase; 3164 if (IS_8251(com->pc98_if_type)) { 3165 divisor = pc98_ttspeedtab(com, t->c_ospeed); 3166 } else { 3167 port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; 3168 3169 /* do historical conversions */ 3170 if (t->c_ispeed == 0) 3171 t->c_ispeed = t->c_ospeed; 3172 3173 /* check requested parameters */ 3174 divisor = ttspeedtab(t->c_ospeed, 3175 if_16550a_type[com->pc98_if_type & 0x0f].speedtab); 3176 } 3177#else 3178 /* do historical conversions */ 3179 if (t->c_ispeed == 0) 3180 t->c_ispeed = t->c_ospeed; 3181 3182 /* check requested parameters */ 3183 divisor = ttspeedtab(t->c_ospeed, comspeedtab); 3184#endif 3185 if (divisor < 0 || divisor > 0 && t->c_ispeed != t->c_ospeed) 3186 return (EINVAL); 3187 3188 /* parameters are OK, convert them to the com struct and the device */ 3189#ifndef PC98 3190 unit = DEV_TO_UNIT(tp->t_dev); 3191 com = com_addr(unit); 3192 iobase = com->iobase; 3193#endif 3194 s = spltty(); 3195#ifdef PC98 3196 if (IS_8251(com->pc98_if_type)) { 3197 if (divisor == 0) 3198 com_tiocm_bic( com, TIOCM_DTR|TIOCM_RTS|TIOCM_LE ); 3199 else 3200 com_tiocm_bis( com, TIOCM_DTR|TIOCM_RTS|TIOCM_LE ); 3201 } else { 3202#endif 3203 if (divisor == 0) 3204 (void)commctl(com, TIOCM_DTR, DMBIC); /* hang up line */ 3205 else 3206 (void)commctl(com, TIOCM_DTR, DMBIS); 3207#ifdef PC98 3208 } 3209#endif 3210 cflag = t->c_cflag; 3211#ifdef PC98 3212 if (!IS_8251(com->pc98_if_type)) { 3213#endif 3214 switch (cflag & CSIZE) { 3215 case CS5: 3216 cfcr = CFCR_5BITS; 3217 break; 3218 case CS6: 3219 cfcr = CFCR_6BITS; 3220 break; 3221 case CS7: 3222 cfcr = CFCR_7BITS; 3223 break; 3224 default: 3225 cfcr = CFCR_8BITS; 3226 break; 3227 } 3228 if (cflag & PARENB) { 3229 cfcr |= CFCR_PENAB; 3230 if (!(cflag & PARODD)) 3231 cfcr |= CFCR_PEVEN; 3232 } 3233 if (cflag & CSTOPB) 3234 cfcr |= CFCR_STOPB; 3235 3236 if (com->hasfifo && divisor != 0) { 3237 /* 3238 * Use a fifo trigger level low enough so that the input 3239 * latency from the fifo is less than about 16 msec and 3240 * the total latency is less than about 30 msec. These 3241 * latencies are reasonable for humans. Serial comms 3242 * protocols shouldn't expect anything better since modem 3243 * latencies are larger. 3244 */ 3245 com->fifo_image = t->c_ospeed <= 4800 3246 ? FIFO_ENABLE : FIFO_ENABLE | FIFO_RX_HIGH; 3247#ifdef COM_ESP 3248 /* 3249 * The Hayes ESP card needs the fifo DMA mode bit set 3250 * in compatibility mode. If not, it will interrupt 3251 * for each character received. 3252 */ 3253 if (com->esp) 3254 com->fifo_image |= FIFO_DMA_MODE; 3255#endif 3256#ifdef PC98 3257 outb(iobase + (com_fifo << port_shift), com->fifo_image); 3258#else 3259 outb(iobase + com_fifo, com->fifo_image); 3260#endif 3261 } 3262#ifdef PC98 3263 } 3264#endif 3265 3266 /* 3267 * This returns with interrupts disabled so that we can complete 3268 * the speed change atomically. Keeping interrupts disabled is 3269 * especially important while com_data is hidden. 3270 */ 3271 (void) siosetwater(com, t->c_ispeed); 3272 3273#ifdef PC98 3274 if (IS_8251(com->pc98_if_type)) 3275 com_cflag_and_speed_set(com, cflag, t->c_ospeed); 3276 else { 3277#endif 3278 if (divisor != 0) { 3279#ifdef PC98 3280 outb(iobase + (com_cfcr << port_shift), cfcr | CFCR_DLAB); 3281#else 3282 outb(iobase + com_cfcr, cfcr | CFCR_DLAB); 3283#endif 3284 /* 3285 * Only set the divisor registers if they would change, 3286 * since on some 16550 incompatibles (UMC8669F), setting 3287 * them while input is arriving them loses sync until 3288 * data stops arriving. 3289 */ 3290 dlbl = divisor & 0xFF; 3291#ifdef PC98 3292 if (inb(iobase + (com_dlbl << port_shift)) != dlbl) 3293 outb(iobase + (com_dlbl << port_shift), dlbl); 3294 dlbh = (u_int) divisor >> 8; 3295 if (inb(iobase + (com_dlbh << port_shift)) != dlbh) 3296 outb(iobase + (com_dlbh << port_shift), dlbh); 3297#else 3298 if (inb(iobase + com_dlbl) != dlbl) 3299 outb(iobase + com_dlbl, dlbl); 3300 dlbh = (u_int) divisor >> 8; 3301 if (inb(iobase + com_dlbh) != dlbh) 3302 outb(iobase + com_dlbh, dlbh); 3303#endif 3304 } 3305 3306 3307#ifdef PC98 3308 } 3309 outb(iobase + (com_cfcr << port_shift), com->cfcr_image = cfcr); 3310#else 3311 outb(iobase + com_cfcr, com->cfcr_image = cfcr); 3312#endif 3313 3314 if (!(tp->t_state & TS_TTSTOP)) 3315 com->state |= CS_TTGO; 3316 3317 if (cflag & CRTS_IFLOW) { 3318 if (com->st16650a) { 3319 outb(iobase + com_cfcr, 0xbf); 3320 outb(iobase + com_fifo, inb(iobase + com_fifo) | 0x40); 3321 } 3322 com->state |= CS_RTS_IFLOW; 3323 /* 3324 * If CS_RTS_IFLOW just changed from off to on, the change 3325 * needs to be propagated to MCR_RTS. This isn't urgent, 3326 * so do it later by calling comstart() instead of repeating 3327 * a lot of code from comstart() here. 3328 */ 3329 } else if (com->state & CS_RTS_IFLOW) { 3330 com->state &= ~CS_RTS_IFLOW; 3331 /* 3332 * CS_RTS_IFLOW just changed from on to off. Force MCR_RTS 3333 * on here, since comstart() won't do it later. 3334 */ 3335#ifdef PC98 3336 if (IS_8251(com->pc98_if_type)) 3337 com_tiocm_bis(com, TIOCM_RTS); 3338 else 3339#endif 3340 outb(com->modem_ctl_port, com->mcr_image |= MCR_RTS); 3341 if (com->st16650a) { 3342 outb(iobase + com_cfcr, 0xbf); 3343 outb(iobase + com_fifo, inb(iobase + com_fifo) & ~0x40); 3344 } 3345 } 3346 3347 3348 /* 3349 * Set up state to handle output flow control. 3350 * XXX - worth handling MDMBUF (DCD) flow control at the lowest level? 3351 * Now has 10+ msec latency, while CTS flow has 50- usec latency. 3352 */ 3353 com->state |= CS_ODEVREADY; 3354 com->state &= ~CS_CTS_OFLOW; 3355#ifdef PC98 3356 if (com->pc98_if_type == COM_IF_RSA98III) { 3357 param = inb(com->rsabase + rsa_msr); 3358 outb(com->rsabase + rsa_msr, param & 0x14); 3359 } 3360#endif 3361 if (cflag & CCTS_OFLOW) { 3362 com->state |= CS_CTS_OFLOW; 3363#ifdef PC98 3364 if (IS_8251(com->pc98_if_type)) { 3365 if (!(pc98_get_modem_status(com) & TIOCM_CTS)) 3366 com->state &= ~CS_ODEVREADY; 3367 } else { 3368#endif 3369#ifdef PC98 3370 if (com->pc98_if_type == COM_IF_RSA98III) { 3371 /* Set automatic flow control mode */ 3372 outb(com->rsabase + rsa_msr, param | 0x08); 3373 } else 3374#endif 3375 if (!(com->last_modem_status & MSR_CTS)) 3376 com->state &= ~CS_ODEVREADY; 3377 if (com->st16650a) { 3378 outb(iobase + com_cfcr, 0xbf); 3379 outb(iobase + com_fifo, inb(iobase + com_fifo) | 0x80); 3380 } 3381#ifdef PC98 3382 } 3383#endif 3384 } else { 3385 if (com->st16650a) { 3386 outb(iobase + com_cfcr, 0xbf); 3387 outb(iobase + com_fifo, inb(iobase + com_fifo) & ~0x80); 3388 } 3389 } 3390 3391 3392#ifdef PC98 3393 outb(iobase + (com_cfcr << port_shift), com->cfcr_image); 3394#else 3395 outb(iobase + com_cfcr, com->cfcr_image); 3396#endif 3397 3398 3399 /* XXX shouldn't call functions while intrs are disabled. */ 3400 disc_optim(tp, t, com); 3401 /* 3402 * Recover from fiddling with CS_TTGO. We used to call siointr1() 3403 * unconditionally, but that defeated the careful discarding of 3404 * stale input in sioopen(). 3405 */ 3406 if (com->state >= (CS_BUSY | CS_TTGO)) 3407 siointr1(com); 3408 3409 enable_intr(); 3410 splx(s); 3411 comstart(tp); 3412 if (com->ibufold != NULL) { 3413 free(com->ibufold, M_DEVBUF); 3414 com->ibufold = NULL; 3415 } 3416 return (0); 3417} 3418 3419static int 3420siosetwater(com, speed) 3421 struct com_s *com; 3422 speed_t speed; 3423{ 3424 int cp4ticks; 3425 u_char *ibuf; 3426 int ibufsize; 3427 struct tty *tp; 3428 3429 /* 3430 * Make the buffer size large enough to handle a softtty interrupt 3431 * latency of about 2 ticks without loss of throughput or data 3432 * (about 3 ticks if input flow control is not used or not honoured, 3433 * but a bit less for CS5-CS7 modes). 3434 */ 3435 cp4ticks = speed / 10 / hz * 4; 3436 for (ibufsize = 128; ibufsize < cp4ticks;) 3437 ibufsize <<= 1; 3438#ifdef PC98 3439 if (com->pc98_if_type == COM_IF_RSA98III) 3440 ibufsize = 2048; 3441#endif 3442 if (ibufsize == com->ibufsize) { 3443 disable_intr(); 3444 return (0); 3445 } 3446 3447 /* 3448 * Allocate input buffer. The extra factor of 2 in the size is 3449 * to allow for an error byte for each input byte. 3450 */ 3451 ibuf = malloc(2 * ibufsize, M_DEVBUF, M_NOWAIT); 3452 if (ibuf == NULL) { 3453 disable_intr(); 3454 return (ENOMEM); 3455 } 3456 3457 /* Initialize non-critical variables. */ 3458 com->ibufold = com->ibuf; 3459 com->ibufsize = ibufsize; 3460 tp = com->tp; 3461 if (tp != NULL) { 3462 tp->t_ififosize = 2 * ibufsize; 3463 tp->t_ispeedwat = (speed_t)-1; 3464 tp->t_ospeedwat = (speed_t)-1; 3465 } 3466 3467 /* 3468 * Read current input buffer, if any. Continue with interrupts 3469 * disabled. 3470 */ 3471 disable_intr(); 3472 if (com->iptr != com->ibuf) 3473 sioinput(com); 3474 3475 /*- 3476 * Initialize critical variables, including input buffer watermarks. 3477 * The external device is asked to stop sending when the buffer 3478 * exactly reaches high water, or when the high level requests it. 3479 * The high level is notified immediately (rather than at a later 3480 * clock tick) when this watermark is reached. 3481 * The buffer size is chosen so the watermark should almost never 3482 * be reached. 3483 * The low watermark is invisibly 0 since the buffer is always 3484 * emptied all at once. 3485 */ 3486 com->iptr = com->ibuf = ibuf; 3487 com->ibufend = ibuf + ibufsize; 3488 com->ierroff = ibufsize; 3489 com->ihighwater = ibuf + 3 * ibufsize / 4; 3490 return (0); 3491} 3492 3493static void 3494comstart(tp) 3495 struct tty *tp; 3496{ 3497 struct com_s *com; 3498 int s; 3499 int unit; 3500#ifdef PC98 3501 int tmp; 3502#endif 3503 3504 unit = DEV_TO_UNIT(tp->t_dev); 3505 com = com_addr(unit); 3506 s = spltty(); 3507 disable_intr(); 3508 if (tp->t_state & TS_TTSTOP) 3509 com->state &= ~CS_TTGO; 3510 else 3511 com->state |= CS_TTGO; 3512 if (tp->t_state & TS_TBLOCK) { 3513#ifdef PC98 3514 if (IS_8251(com->pc98_if_type)) 3515 tmp = com_tiocm_get(com) & TIOCM_RTS; 3516 else 3517 tmp = com->mcr_image & MCR_RTS; 3518 if (tmp && (com->state & CS_RTS_IFLOW)) 3519#else 3520 if (com->mcr_image & MCR_RTS && com->state & CS_RTS_IFLOW) 3521#endif 3522#ifdef PC98 3523 if (IS_8251(com->pc98_if_type)) 3524 com_tiocm_bic(com, TIOCM_RTS); 3525 else 3526#endif 3527 outb(com->modem_ctl_port, com->mcr_image &= ~MCR_RTS); 3528 } else { 3529#ifdef PC98 3530 if (IS_8251(com->pc98_if_type)) 3531 tmp = com_tiocm_get(com) & TIOCM_RTS; 3532 else 3533 tmp = com->mcr_image & MCR_RTS; 3534 if (!(tmp) && com->iptr < com->ihighwater 3535 && com->state & CS_RTS_IFLOW) 3536#else 3537 if (!(com->mcr_image & MCR_RTS) && com->iptr < com->ihighwater 3538 && com->state & CS_RTS_IFLOW) 3539#endif 3540#ifdef PC98 3541 if (IS_8251(com->pc98_if_type)) 3542 com_tiocm_bis(com, TIOCM_RTS); 3543 else 3544#endif 3545 outb(com->modem_ctl_port, com->mcr_image |= MCR_RTS); 3546 } 3547 enable_intr(); 3548 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) { 3549 ttwwakeup(tp); 3550#ifdef PC98 3551/* if(IS_8251(com->pc98_if_type)) 3552 com_int_Tx_enable(com); */ 3553#endif 3554 splx(s); 3555 return; 3556 } 3557 if (tp->t_outq.c_cc != 0) { 3558 struct lbq *qp; 3559 struct lbq *next; 3560 3561 if (!com->obufs[0].l_queued) { 3562 com->obufs[0].l_tail 3563 = com->obuf1 + q_to_b(&tp->t_outq, com->obuf1, 3564#ifndef PC98 3565 sizeof com->obuf1); 3566#else 3567 com->obufsize); 3568#endif 3569 com->obufs[0].l_next = NULL; 3570 com->obufs[0].l_queued = TRUE; 3571 disable_intr(); 3572 if (com->state & CS_BUSY) { 3573 qp = com->obufq.l_next; 3574 while ((next = qp->l_next) != NULL) 3575 qp = next; 3576 qp->l_next = &com->obufs[0]; 3577 } else { 3578 com->obufq.l_head = com->obufs[0].l_head; 3579 com->obufq.l_tail = com->obufs[0].l_tail; 3580 com->obufq.l_next = &com->obufs[0]; 3581 com->state |= CS_BUSY; 3582 } 3583 enable_intr(); 3584 } 3585 if (tp->t_outq.c_cc != 0 && !com->obufs[1].l_queued) { 3586 com->obufs[1].l_tail 3587 = com->obuf2 + q_to_b(&tp->t_outq, com->obuf2, 3588#ifndef PC98 3589 sizeof com->obuf2); 3590#else 3591 com->obufsize); 3592#endif 3593 com->obufs[1].l_next = NULL; 3594 com->obufs[1].l_queued = TRUE; 3595 disable_intr(); 3596 if (com->state & CS_BUSY) { 3597 qp = com->obufq.l_next; 3598 while ((next = qp->l_next) != NULL) 3599 qp = next; 3600 qp->l_next = &com->obufs[1]; 3601 } else { 3602 com->obufq.l_head = com->obufs[1].l_head; 3603 com->obufq.l_tail = com->obufs[1].l_tail; 3604 com->obufq.l_next = &com->obufs[1]; 3605 com->state |= CS_BUSY; 3606 } 3607 enable_intr(); 3608 } 3609 tp->t_state |= TS_BUSY; 3610 } 3611 disable_intr(); 3612 if (com->state >= (CS_BUSY | CS_TTGO)) 3613 siointr1(com); /* fake interrupt to start output */ 3614 enable_intr(); 3615#ifdef PC98 3616/* if(IS_8251(com->pc98_if_type)) 3617 com_int_Tx_enable(com); */ 3618#endif 3619 ttwwakeup(tp); 3620 splx(s); 3621} 3622 3623static void 3624siostop(tp, rw) 3625 struct tty *tp; 3626 int rw; 3627{ 3628 struct com_s *com; 3629#ifdef PC98 3630 int port_shift = 0; 3631 int rsa98_tmp = 0; 3632#endif 3633 3634 com = com_addr(DEV_TO_UNIT(tp->t_dev)); 3635 if (com->gone) 3636 return; 3637#ifdef PC98 3638 if (IS_8251(com->pc98_if_type)) 3639 port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; 3640#endif 3641 disable_intr(); 3642 if (rw & FWRITE) { 3643 if (com->hasfifo) 3644#ifdef COM_ESP 3645 /* XXX avoid h/w bug. */ 3646 if (!com->esp) 3647#endif 3648#ifdef PC98 3649 outb(com->iobase + (com_fifo << port_shift), 3650 FIFO_XMT_RST | com->fifo_image); 3651 if (com->pc98_if_type == COM_IF_RSA98III) 3652 for(rsa98_tmp = 0; rsa98_tmp < 2048; rsa98_tmp++) 3653 outb(com->iobase + (com_fifo << port_shift), 3654 FIFO_XMT_RST | com->fifo_image); 3655#else 3656 outb(com->iobase + com_fifo, 3657 FIFO_XMT_RST | com->fifo_image); 3658#endif 3659 com->obufs[0].l_queued = FALSE; 3660 com->obufs[1].l_queued = FALSE; 3661 if (com->state & CS_ODONE) 3662 com_events -= LOTS_OF_EVENTS; 3663 com->state &= ~(CS_ODONE | CS_BUSY); 3664 com->tp->t_state &= ~TS_BUSY; 3665 } 3666 if (rw & FREAD) { 3667 if (com->hasfifo) 3668#ifdef COM_ESP 3669 /* XXX avoid h/w bug. */ 3670 if (!com->esp) 3671#endif 3672#ifdef PC98 3673 if (com->pc98_if_type == COM_IF_RSA98III) { 3674 for(rsa98_tmp = 0; rsa98_tmp < 2048; rsa98_tmp++) 3675 inb(com->data_port); 3676 } 3677 outb(com->iobase + (com_fifo << port_shift), 3678 FIFO_RCV_RST | com->fifo_image); 3679#else 3680 outb(com->iobase + com_fifo, 3681 FIFO_RCV_RST | com->fifo_image); 3682#endif 3683 com_events -= (com->iptr - com->ibuf); 3684 com->iptr = com->ibuf; 3685 } 3686 enable_intr(); 3687 comstart(tp); 3688} 3689 3690static struct tty * 3691siodevtotty(dev) 3692 dev_t dev; 3693{ 3694 int mynor; 3695 int unit; 3696 3697 mynor = minor(dev); 3698 if (mynor & CONTROL_MASK) 3699 return (NULL); 3700 unit = MINOR_TO_UNIT(mynor); 3701 if ((u_int) unit >= NSIOTOT) 3702 return (NULL); 3703 return (&sio_tty[unit]); 3704} 3705 3706static int 3707commctl(com, bits, how) 3708 struct com_s *com; 3709 int bits; 3710 int how; 3711{ 3712 int mcr; 3713 int msr; 3714 3715 if (how == DMGET) { 3716 bits = TIOCM_LE; /* XXX - always enabled while open */ 3717 mcr = com->mcr_image; 3718 if (mcr & MCR_DTR) 3719 bits |= TIOCM_DTR; 3720 if (mcr & MCR_RTS) 3721 bits |= TIOCM_RTS; 3722 msr = com->prev_modem_status; 3723 if (msr & MSR_CTS) 3724 bits |= TIOCM_CTS; 3725 if (msr & MSR_DCD) 3726 bits |= TIOCM_CD; 3727 if (msr & MSR_DSR) 3728 bits |= TIOCM_DSR; 3729 /* 3730 * XXX - MSR_RI is naturally volatile, and we make MSR_TERI 3731 * more volatile by reading the modem status a lot. Perhaps 3732 * we should latch both bits until the status is read here. 3733 */ 3734 if (msr & (MSR_RI | MSR_TERI)) 3735 bits |= TIOCM_RI; 3736 return (bits); 3737 } 3738 mcr = 0; 3739 if (bits & TIOCM_DTR) 3740 mcr |= MCR_DTR; 3741 if (bits & TIOCM_RTS) 3742 mcr |= MCR_RTS; 3743 if (com->gone) 3744 return(0); 3745 disable_intr(); 3746 switch (how) { 3747 case DMSET: 3748 outb(com->modem_ctl_port, 3749 com->mcr_image = mcr | (com->mcr_image & MCR_IENABLE)); 3750 break; 3751 case DMBIS: 3752 outb(com->modem_ctl_port, com->mcr_image |= mcr); 3753 break; 3754 case DMBIC: 3755 outb(com->modem_ctl_port, com->mcr_image &= ~mcr); 3756 break; 3757 } 3758 enable_intr(); 3759 return (0); 3760} 3761 3762static void 3763siosettimeout() 3764{ 3765 struct com_s *com; 3766 bool_t someopen; 3767 int unit; 3768 3769 /* 3770 * Set our timeout period to 1 second if no polled devices are open. 3771 * Otherwise set it to max(1/200, 1/hz). 3772 * Enable timeouts iff some device is open. 3773 */ 3774 untimeout(comwakeup, (void *)NULL, sio_timeout_handle); 3775 sio_timeout = hz; 3776 someopen = FALSE; 3777 for (unit = 0; unit < NSIOTOT; ++unit) { 3778 com = com_addr(unit); 3779 if (com != NULL && com->tp != NULL 3780 && com->tp->t_state & TS_ISOPEN && !com->gone) { 3781 someopen = TRUE; 3782 if (com->poll || com->poll_output) { 3783 sio_timeout = hz > 200 ? hz / 200 : 1; 3784 break; 3785 } 3786 } 3787 } 3788 if (someopen) { 3789 sio_timeouts_until_log = hz / sio_timeout; 3790 sio_timeout_handle = timeout(comwakeup, (void *)NULL, 3791 sio_timeout); 3792 } else { 3793 /* Flush error messages, if any. */ 3794 sio_timeouts_until_log = 1; 3795 comwakeup((void *)NULL); 3796 untimeout(comwakeup, (void *)NULL, sio_timeout_handle); 3797 } 3798} 3799 3800static void 3801comwakeup(chan) 3802 void *chan; 3803{ 3804 struct com_s *com; 3805 int unit; 3806 3807 sio_timeout_handle = timeout(comwakeup, (void *)NULL, sio_timeout); 3808 3809 /* 3810 * Recover from lost output interrupts. 3811 * Poll any lines that don't use interrupts. 3812 */ 3813 for (unit = 0; unit < NSIOTOT; ++unit) { 3814 com = com_addr(unit); 3815 if (com != NULL && !com->gone 3816 && (com->state >= (CS_BUSY | CS_TTGO) || com->poll)) { 3817 disable_intr(); 3818 siointr1(com); 3819 enable_intr(); 3820 } 3821 } 3822 3823 /* 3824 * Check for and log errors, but not too often. 3825 */ 3826 if (--sio_timeouts_until_log > 0) 3827 return; 3828 sio_timeouts_until_log = hz / sio_timeout; 3829 for (unit = 0; unit < NSIOTOT; ++unit) { 3830 int errnum; 3831 3832 com = com_addr(unit); 3833 if (com == NULL) 3834 continue; 3835 if (com->gone) 3836 continue; 3837 for (errnum = 0; errnum < CE_NTYPES; ++errnum) { 3838 u_int delta; 3839 u_long total; 3840 3841 disable_intr(); 3842 delta = com->delta_error_counts[errnum]; 3843 com->delta_error_counts[errnum] = 0; 3844 enable_intr(); 3845 if (delta == 0) 3846 continue; 3847 total = com->error_counts[errnum] += delta; 3848 log(LOG_ERR, "sio%d: %u more %s%s (total %lu)\n", 3849 unit, delta, error_desc[errnum], 3850 delta == 1 ? "" : "s", total); 3851 } 3852 } 3853} 3854 3855#ifdef PC98 3856/* commint is called when modem control line changes */ 3857static void 3858commint(dev_t dev) 3859{ 3860 register struct tty *tp; 3861 int stat,delta; 3862 struct com_s *com; 3863 int mynor,unit; 3864 3865 mynor = minor(dev); 3866 unit = MINOR_TO_UNIT(mynor); 3867 com = com_addr(unit); 3868 tp = com->tp; 3869 3870 stat = com_tiocm_get(com); 3871 delta = com_tiocm_get_delta(com); 3872 3873 if (com->state & CS_CTS_OFLOW) { 3874 if (stat & TIOCM_CTS) 3875 com->state |= CS_ODEVREADY; 3876 else 3877 com->state &= ~CS_ODEVREADY; 3878 } 3879 if ((delta & TIOCM_CAR) && (mynor & CALLOUT_MASK) == 0) { 3880 if (stat & TIOCM_CAR ) 3881 (void)(*linesw[tp->t_line].l_modem)(tp, 1); 3882 else if ((*linesw[tp->t_line].l_modem)(tp, 0) == 0) { 3883 /* negate DTR, RTS */ 3884 com_tiocm_bic(com, (tp->t_cflag & HUPCL) ? 3885 TIOCM_DTR|TIOCM_RTS|TIOCM_LE : TIOCM_LE ); 3886 /* disable IENABLE */ 3887 com_int_TxRx_disable( com ); 3888 } 3889 } 3890} 3891#endif 3892 3893static void 3894disc_optim(tp, t, com) 3895 struct tty *tp; 3896 struct termios *t; 3897 struct com_s *com; 3898{ 3899 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) 3900 && (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) 3901 && (!(t->c_iflag & PARMRK) 3902 || (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) 3903 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) 3904 && linesw[tp->t_line].l_rint == ttyinput) 3905 tp->t_state |= TS_CAN_BYPASS_L_RINT; 3906 else 3907 tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 3908 com->hotchar = linesw[tp->t_line].l_hotchar; 3909} 3910 3911/* 3912 * Following are all routines needed for SIO to act as console 3913 */ 3914#include <machine/cons.h> 3915 3916struct siocnstate { 3917 u_char dlbl; 3918 u_char dlbh; 3919 u_char ier; 3920 u_char cfcr; 3921 u_char mcr; 3922}; 3923 3924static speed_t siocngetspeed __P((Port_t, struct speedtab *)); 3925static void siocnclose __P((struct siocnstate *sp, Port_t iobase)); 3926static void siocnopen __P((struct siocnstate *sp, Port_t iobase, int speed)); 3927static void siocntxwait __P((Port_t iobase)); 3928 3929#ifdef __i386__ 3930/* 3931 * XXX: sciocnget() and sciocnputc() are not declared static, as they are 3932 * referred to from i386/i386/i386-gdbstub.c. 3933 */ 3934static cn_probe_t siocnprobe; 3935static cn_init_t siocninit; 3936static cn_checkc_t siocncheckc; 3937 cn_getc_t siocngetc; 3938 cn_putc_t siocnputc; 3939 3940CONS_DRIVER(sio, siocnprobe, siocninit, siocngetc, siocncheckc, siocnputc); 3941 3942#endif 3943 3944static void 3945siocntxwait(iobase) 3946 Port_t iobase; 3947{ 3948 int timo; 3949 3950 /* 3951 * Wait for any pending transmission to finish. Required to avoid 3952 * the UART lockup bug when the speed is changed, and for normal 3953 * transmits. 3954 */ 3955 timo = 100000; 3956 while ((inb(iobase + com_lsr) & (LSR_TSRE | LSR_TXRDY)) 3957 != (LSR_TSRE | LSR_TXRDY) && --timo != 0) 3958 ; 3959} 3960 3961/* 3962 * Read the serial port specified and try to figure out what speed 3963 * it's currently running at. We're assuming the serial port has 3964 * been initialized and is basicly idle. This routine is only intended 3965 * to be run at system startup. 3966 * 3967 * If the value read from the serial port doesn't make sense, return 0. 3968 */ 3969 3970static speed_t 3971siocngetspeed(iobase, table) 3972 Port_t iobase; 3973 struct speedtab *table; 3974{ 3975 int code; 3976 u_char dlbh; 3977 u_char dlbl; 3978 u_char cfcr; 3979 3980 cfcr = inb(iobase + com_cfcr); 3981 outb(iobase + com_cfcr, CFCR_DLAB | cfcr); 3982 3983 dlbl = inb(iobase + com_dlbl); 3984 dlbh = inb(iobase + com_dlbh); 3985 3986 outb(iobase + com_cfcr, cfcr); 3987 3988 code = dlbh << 8 | dlbl; 3989 3990 for ( ; table->sp_speed != -1; table++) 3991 if (table->sp_code == code) 3992 return (table->sp_speed); 3993 3994 return 0; /* didn't match anything sane */ 3995} 3996 3997static void 3998siocnopen(sp, iobase, speed) 3999 struct siocnstate *sp; 4000 Port_t iobase; 4001 int speed; 4002{ 4003 int divisor; 4004 u_char dlbh; 4005 u_char dlbl; 4006 4007 /* 4008 * Save all the device control registers except the fifo register 4009 * and set our default ones (cs8 -parenb speed=comdefaultrate). 4010 * We can't save the fifo register since it is read-only. 4011 */ 4012 sp->ier = inb(iobase + com_ier); 4013 outb(iobase + com_ier, 0); /* spltty() doesn't stop siointr() */ 4014 siocntxwait(iobase); 4015 sp->cfcr = inb(iobase + com_cfcr); 4016 outb(iobase + com_cfcr, CFCR_DLAB | CFCR_8BITS); 4017 sp->dlbl = inb(iobase + com_dlbl); 4018 sp->dlbh = inb(iobase + com_dlbh); 4019 /* 4020 * Only set the divisor registers if they would change, since on 4021 * some 16550 incompatibles (Startech), setting them clears the 4022 * data input register. This also reduces the effects of the 4023 * UMC8669F bug. 4024 */ 4025 divisor = ttspeedtab(speed, comspeedtab); 4026 dlbl = divisor & 0xFF; 4027 if (sp->dlbl != dlbl) 4028 outb(iobase + com_dlbl, dlbl); 4029 dlbh = (u_int) divisor >> 8; 4030 if (sp->dlbh != dlbh) 4031 outb(iobase + com_dlbh, dlbh); 4032 outb(iobase + com_cfcr, CFCR_8BITS); 4033 sp->mcr = inb(iobase + com_mcr); 4034 /* 4035 * We don't want interrupts, but must be careful not to "disable" 4036 * them by clearing the MCR_IENABLE bit, since that might cause 4037 * an interrupt by floating the IRQ line. 4038 */ 4039 outb(iobase + com_mcr, (sp->mcr & MCR_IENABLE) | MCR_DTR | MCR_RTS); 4040} 4041 4042static void 4043siocnclose(sp, iobase) 4044 struct siocnstate *sp; 4045 Port_t iobase; 4046{ 4047 /* 4048 * Restore the device control registers. 4049 */ 4050 siocntxwait(iobase); 4051 outb(iobase + com_cfcr, CFCR_DLAB | CFCR_8BITS); 4052 if (sp->dlbl != inb(iobase + com_dlbl)) 4053 outb(iobase + com_dlbl, sp->dlbl); 4054 if (sp->dlbh != inb(iobase + com_dlbh)) 4055 outb(iobase + com_dlbh, sp->dlbh); 4056 outb(iobase + com_cfcr, sp->cfcr); 4057 /* 4058 * XXX damp oscillations of MCR_DTR and MCR_RTS by not restoring them. 4059 */ 4060 outb(iobase + com_mcr, sp->mcr | MCR_DTR | MCR_RTS); 4061 outb(iobase + com_ier, sp->ier); 4062} 4063 4064#ifdef __i386__ 4065static 4066#endif 4067void 4068siocnprobe(cp) 4069 struct consdev *cp; 4070{ 4071 speed_t boot_speed; 4072 u_char cfcr; 4073 int s, unit; 4074 struct siocnstate sp; 4075 4076 /* 4077 * Find our first enabled console, if any. If it is a high-level 4078 * console device, then initialize it and return successfully. 4079 * If it is a low-level console device, then initialize it and 4080 * return unsuccessfully. It must be initialized in both cases 4081 * for early use by console drivers and debuggers. Initializing 4082 * the hardware is not necessary in all cases, since the i/o 4083 * routines initialize it on the fly, but it is necessary if 4084 * input might arrive while the hardware is switched back to an 4085 * uninitialized state. We can't handle multiple console devices 4086 * yet because our low-level routines don't take a device arg. 4087 * We trust the user to set the console flags properly so that we 4088 * don't need to probe. 4089 */ 4090 cp->cn_pri = CN_DEAD; 4091 4092 for (unit = 0; unit < 16; unit++) { /* XXX need to know how many */ 4093 int flags; 4094 if (resource_int_value("sio", unit, "flags", &flags)) 4095 continue; 4096 if (COM_CONSOLE(flags)) { 4097 int port; 4098 if (resource_int_value("sio", unit, "port", &port)) 4099 continue; 4100 siocniobase = port; 4101 s = spltty(); 4102 if (boothowto & RB_SERIAL) { 4103 boot_speed = siocngetspeed(siocniobase, 4104 comspeedtab); 4105 if (boot_speed) 4106 comdefaultrate = boot_speed; 4107 } 4108 4109 /* 4110 * Initialize the divisor latch. We can't rely on 4111 * siocnopen() to do this the first time, since it 4112 * avoids writing to the latch if the latch appears 4113 * to have the correct value. Also, if we didn't 4114 * just read the speed from the hardware, then we 4115 * need to set the speed in hardware so that 4116 * switching it later is null. 4117 */ 4118 cfcr = inb(siocniobase + com_cfcr); 4119 outb(siocniobase + com_cfcr, CFCR_DLAB | cfcr); 4120 outb(siocniobase + com_dlbl, 4121 COMBRD(comdefaultrate) & 0xff); 4122 outb(siocniobase + com_dlbh, 4123 (u_int) COMBRD(comdefaultrate) >> 8); 4124 outb(siocniobase + com_cfcr, cfcr); 4125 4126 siocnopen(&sp, siocniobase, comdefaultrate); 4127 splx(s); 4128 if (!COM_LLCONSOLE(flags)) { 4129 cp->cn_dev = makedev(CDEV_MAJOR, unit); 4130 cp->cn_pri = COM_FORCECONSOLE(flags) 4131 || boothowto & RB_SERIAL 4132 ? CN_REMOTE : CN_NORMAL; 4133 } 4134 break; 4135 } 4136 } 4137} 4138 4139#ifdef __alpha__ 4140 4141struct consdev siocons = { 4142 NULL, NULL, siocngetc, siocncheckc, siocnputc, 4143 NULL, makedev(CDEV_MAJOR, 0), CN_NORMAL, 4144}; 4145 4146extern struct consdev *cn_tab; 4147 4148int 4149siocnattach(port, speed) 4150 int port; 4151 int speed; 4152{ 4153 int s; 4154 u_char cfcr; 4155 struct siocnstate sp; 4156 4157 siocniobase = port; 4158 comdefaultrate = speed; 4159 4160 s = spltty(); 4161 4162 /* 4163 * Initialize the divisor latch. We can't rely on 4164 * siocnopen() to do this the first time, since it 4165 * avoids writing to the latch if the latch appears 4166 * to have the correct value. Also, if we didn't 4167 * just read the speed from the hardware, then we 4168 * need to set the speed in hardware so that 4169 * switching it later is null. 4170 */ 4171 cfcr = inb(siocniobase + com_cfcr); 4172 outb(siocniobase + com_cfcr, CFCR_DLAB | cfcr); 4173 outb(siocniobase + com_dlbl, 4174 COMBRD(comdefaultrate) & 0xff); 4175 outb(siocniobase + com_dlbh, 4176 (u_int) COMBRD(comdefaultrate) >> 8); 4177 outb(siocniobase + com_cfcr, cfcr); 4178 4179 siocnopen(&sp, siocniobase, comdefaultrate); 4180 splx(s); 4181 4182 cn_tab = &siocons; 4183 return 0; 4184} 4185 4186int 4187siogdbattach(port, speed) 4188 int port; 4189 int speed; 4190{ 4191 int s; 4192 u_char cfcr; 4193 struct siocnstate sp; 4194 4195 siogdbiobase = port; 4196 gdbdefaultrate = speed; 4197 4198 s = spltty(); 4199 4200 /* 4201 * Initialize the divisor latch. We can't rely on 4202 * siocnopen() to do this the first time, since it 4203 * avoids writing to the latch if the latch appears 4204 * to have the correct value. Also, if we didn't 4205 * just read the speed from the hardware, then we 4206 * need to set the speed in hardware so that 4207 * switching it later is null. 4208 */ 4209 cfcr = inb(siogdbiobase + com_cfcr); 4210 outb(siogdbiobase + com_cfcr, CFCR_DLAB | cfcr); 4211 outb(siogdbiobase + com_dlbl, 4212 COMBRD(gdbdefaultrate) & 0xff); 4213 outb(siogdbiobase + com_dlbh, 4214 (u_int) COMBRD(gdbdefaultrate) >> 8); 4215 outb(siogdbiobase + com_cfcr, cfcr); 4216 4217 siocnopen(&sp, siogdbiobase, gdbdefaultrate); 4218 splx(s); 4219 4220 return 0; 4221} 4222 4223#endif 4224 4225#ifdef __i386__ 4226static 4227#endif 4228void 4229siocninit(cp) 4230 struct consdev *cp; 4231{ 4232 comconsole = DEV_TO_UNIT(cp->cn_dev); 4233} 4234 4235#ifdef __i386__ 4236static 4237#endif 4238int 4239siocncheckc(dev) 4240 dev_t dev; 4241{ 4242 int c; 4243 Port_t iobase; 4244 int s; 4245 struct siocnstate sp; 4246 4247 iobase = siocniobase; 4248 s = spltty(); 4249 siocnopen(&sp, iobase, comdefaultrate); 4250 if (inb(iobase + com_lsr) & LSR_RXRDY) 4251 c = inb(iobase + com_data); 4252 else 4253 c = -1; 4254 siocnclose(&sp, iobase); 4255 splx(s); 4256 return (c); 4257} 4258 4259 4260int 4261siocngetc(dev) 4262 dev_t dev; 4263{ 4264 int c; 4265 Port_t iobase; 4266 int s; 4267 struct siocnstate sp; 4268 4269 iobase = siocniobase; 4270 s = spltty(); 4271 siocnopen(&sp, iobase, comdefaultrate); 4272 while (!(inb(iobase + com_lsr) & LSR_RXRDY)) 4273 ; 4274 c = inb(iobase + com_data); 4275 siocnclose(&sp, iobase); 4276 splx(s); 4277 return (c); 4278} 4279 4280void 4281siocnputc(dev, c) 4282 dev_t dev; 4283 int c; 4284{ 4285 int s; 4286 struct siocnstate sp; 4287 4288 s = spltty(); 4289 siocnopen(&sp, siocniobase, comdefaultrate); 4290 siocntxwait(siocniobase); 4291 outb(siocniobase + com_data, c); 4292 siocnclose(&sp, siocniobase); 4293 splx(s); 4294} 4295 4296#ifdef __alpha__ 4297int 4298siogdbgetc() 4299{ 4300 int c; 4301 Port_t iobase; 4302 int s; 4303 struct siocnstate sp; 4304 4305 iobase = siogdbiobase; 4306 s = spltty(); 4307 siocnopen(&sp, iobase, gdbdefaultrate); 4308 while (!(inb(iobase + com_lsr) & LSR_RXRDY)) 4309 ; 4310 c = inb(iobase + com_data); 4311 siocnclose(&sp, iobase); 4312 splx(s); 4313 return (c); 4314} 4315 4316void 4317siogdbputc(c) 4318 int c; 4319{ 4320 int s; 4321 struct siocnstate sp; 4322 4323 s = spltty(); 4324 siocnopen(&sp, siogdbiobase, gdbdefaultrate); 4325 siocntxwait(siogdbiobase); 4326 outb(siogdbiobase + com_data, c); 4327 siocnclose(&sp, siogdbiobase); 4328 splx(s); 4329} 4330#endif 4331 4332 4333/* 4334 * support PnP cards if we are using 'em 4335 */ 4336 4337#if NPNP > 0 4338 4339static pnpid_t siopnp_ids[] = { 4340 { 0x5015f435, "MOT1550"}, 4341 { 0x8113b04e, "Supra1381"}, 4342 { 0x9012b04e, "Supra1290"}, 4343 { 0x7121b04e, "SupraExpress 56i Sp"}, 4344 { 0x11007256, "USR0011"}, 4345 { 0x30207256, "USR2030"}, 4346 { 0x31307256, "USR3031"}, 4347 { 0x90307256, "USR3090"}, 4348 { 0x0100440e, "Cardinal MVP288IV"}, 4349 { 0 } 4350}; 4351 4352static char *siopnp_probe(u_long csn, u_long vend_id); 4353static void siopnp_attach(u_long csn, u_long vend_id, char *name, 4354 struct isa_device *dev); 4355static u_long nsiopnp = NSIO; 4356 4357static struct pnp_device siopnp = { 4358 "siopnp", 4359 siopnp_probe, 4360 siopnp_attach, 4361 &nsiopnp, 4362 &tty_imask 4363}; 4364DATA_SET (pnpdevice_set, siopnp); 4365 4366static char * 4367siopnp_probe(u_long csn, u_long vend_id) 4368{ 4369 pnpid_t *id; 4370 char *s = NULL; 4371 4372 for(id = siopnp_ids; id->vend_id != 0; id++) { 4373 if (vend_id == id->vend_id) { 4374 s = id->id_str; 4375 break; 4376 } 4377 } 4378 4379 if (s) { 4380 struct pnp_cinfo d; 4381 read_pnp_parms(&d, 0); 4382 if (d.enable == 0 || d.flags & 1) { 4383 printf("CSN %lu is disabled.\n", csn); 4384 return (NULL); 4385 } 4386 4387 } 4388 4389 return (s); 4390} 4391 4392static void 4393siopnp_attach(u_long csn, u_long vend_id, char *name, struct isa_device *dev) 4394{ 4395 struct pnp_cinfo d; 4396 4397 if (dev->id_unit >= NSIOTOT) 4398 return; 4399 4400 if (read_pnp_parms(&d, 0) == 0) { 4401 printf("failed to read pnp parms\n"); 4402 return; 4403 } 4404 4405 write_pnp_parms(&d, 0); 4406 4407 enable_pnp_card(); 4408 4409 dev->id_iobase = d.port[0]; 4410 dev->id_irq = (1 << d.irq[0]); 4411 dev->id_ointr = siointr; 4412 dev->id_ri_flags = RI_FAST; 4413 dev->id_drq = -1; 4414 4415 if (dev->id_driver == NULL) { 4416 dev->id_driver = &siodriver; 4417 dev->id_id = isa_compat_nextid(); 4418 } 4419 4420 if ((dev->id_alive = sioprobe(dev)) != 0) 4421 sioattach(dev); 4422 else 4423 printf("sio%d: probe failed\n", dev->id_unit); 4424} 4425#endif 4426 4427CDEV_DRIVER_MODULE(sio, isa, sio_driver, sio_devclass, 4428 CDEV_MAJOR, sio_cdevsw, 0, 0); 4429 4430#ifdef PC98 4431/* 4432 * pc98 local function 4433 */ 4434 4435static void 4436com_tiocm_set(struct com_s *com, int msr) 4437{ 4438 int s; 4439 int tmp = 0; 4440 int mask = CMD8251_TxEN|CMD8251_RxEN|CMD8251_DTR|CMD8251_RTS; 4441 4442 s=spltty(); 4443 com->pc98_prev_modem_status = ( msr & (TIOCM_LE|TIOCM_DTR|TIOCM_RTS) ) 4444 | ( com->pc98_prev_modem_status & ~(TIOCM_LE|TIOCM_DTR|TIOCM_RTS) ); 4445 tmp |= (CMD8251_TxEN|CMD8251_RxEN); 4446 if ( msr & TIOCM_DTR ) tmp |= CMD8251_DTR; 4447 if ( msr & TIOCM_RTS ) tmp |= CMD8251_RTS; 4448 pc98_i8251_clear_or_cmd( com, mask, tmp ); 4449 splx(s); 4450} 4451 4452static void 4453com_tiocm_bis(struct com_s *com, int msr) 4454{ 4455 int s; 4456 int tmp = 0; 4457 4458 s=spltty(); 4459 com->pc98_prev_modem_status |= ( msr & (TIOCM_LE|TIOCM_DTR|TIOCM_RTS) ); 4460 tmp |= CMD8251_TxEN|CMD8251_RxEN; 4461 if ( msr & TIOCM_DTR ) tmp |= CMD8251_DTR; 4462 if ( msr & TIOCM_RTS ) tmp |= CMD8251_RTS; 4463 4464 pc98_i8251_or_cmd( com, tmp ); 4465 splx(s); 4466} 4467 4468static void 4469com_tiocm_bic(struct com_s *com, int msr) 4470{ 4471 int s; 4472 int tmp = msr; 4473 4474 s=spltty(); 4475 com->pc98_prev_modem_status &= ~( msr & (TIOCM_LE|TIOCM_DTR|TIOCM_RTS) ); 4476 if ( msr & TIOCM_DTR ) tmp |= CMD8251_DTR; 4477 if ( msr & TIOCM_RTS ) tmp |= CMD8251_RTS; 4478 4479 pc98_i8251_clear_cmd( com, tmp ); 4480 splx(s); 4481} 4482 4483static int 4484com_tiocm_get(struct com_s *com) 4485{ 4486 return( com->pc98_prev_modem_status ); 4487} 4488 4489static int 4490com_tiocm_get_delta(struct com_s *com) 4491{ 4492 int tmp; 4493 4494 tmp = com->pc98_modem_delta; 4495 com->pc98_modem_delta = 0; 4496 return( tmp ); 4497} 4498 4499/* convert to TIOCM_?? ( ioctl.h ) */ 4500static int 4501pc98_get_modem_status(struct com_s *com) 4502{ 4503 int stat, stat2; 4504 register int msr; 4505 4506 stat = inb(com->sts_port); 4507 stat2 = inb(com->in_modem_port); 4508 msr = com->pc98_prev_modem_status 4509 & ~(TIOCM_CAR|TIOCM_RI|TIOCM_DSR|TIOCM_CTS); 4510 if ( !(stat2 & CICSCD_CD) ) msr |= TIOCM_CAR; 4511 if ( !(stat2 & CICSCD_CI) ) msr |= TIOCM_RI; 4512 if ( stat & STS8251_DSR ) msr |= TIOCM_DSR; 4513 if ( !(stat2 & CICSCD_CS) ) msr |= TIOCM_CTS; 4514#if COM_CARRIER_DETECT_EMULATE 4515 if ( msr & (TIOCM_DSR|TIOCM_CTS) ) { 4516 msr |= TIOCM_CAR; 4517 } 4518#endif 4519 return(msr); 4520} 4521 4522static void 4523pc98_check_msr(void* chan) 4524{ 4525 int msr, delta; 4526 int s; 4527 register struct tty *tp; 4528 struct com_s *com; 4529 int mynor; 4530 int unit; 4531 dev_t dev; 4532 4533 dev=(dev_t)chan; 4534 mynor = minor(dev); 4535 unit = MINOR_TO_UNIT(mynor); 4536 com = com_addr(unit); 4537 tp = com->tp; 4538 4539 s = spltty(); 4540 msr = pc98_get_modem_status(com); 4541 /* make change flag */ 4542 delta = msr ^ com->pc98_prev_modem_status; 4543 if ( delta & TIOCM_CAR ) { 4544 if ( com->modem_car_chg_timer ) { 4545 if ( -- com->modem_car_chg_timer ) 4546 msr ^= TIOCM_CAR; 4547 } else { 4548 if ((com->modem_car_chg_timer = (msr & TIOCM_CAR) ? 4549 DCD_ON_RECOGNITION : DCD_OFF_TOLERANCE) != 0) 4550 msr ^= TIOCM_CAR; 4551 } 4552 } else 4553 com->modem_car_chg_timer = 0; 4554 delta = ( msr ^ com->pc98_prev_modem_status ) & 4555 (TIOCM_CAR|TIOCM_RI|TIOCM_DSR|TIOCM_CTS); 4556 com->pc98_prev_modem_status = msr; 4557 delta = ( com->pc98_modem_delta |= delta ); 4558 splx(s); 4559 if ( com->modem_checking || (tp->t_state & (TS_ISOPEN)) ) { 4560 if ( delta ) { 4561 commint(dev); 4562 } 4563 timeout(pc98_check_msr, (caddr_t)dev, 4564 PC98_CHECK_MODEM_INTERVAL); 4565 } else { 4566 com->modem_checking = 0; 4567 } 4568} 4569 4570static void 4571pc98_msrint_start(dev_t dev) 4572{ 4573 struct com_s *com; 4574 int mynor; 4575 int unit; 4576 int s = spltty(); 4577 4578 mynor = minor(dev); 4579 unit = MINOR_TO_UNIT(mynor); 4580 com = com_addr(unit); 4581 /* modem control line check routine envoke interval is 1/10 sec */ 4582 if ( com->modem_checking == 0 ) { 4583 com->pc98_prev_modem_status = pc98_get_modem_status(com); 4584 com->pc98_modem_delta = 0; 4585 timeout(pc98_check_msr, (caddr_t)dev, 4586 PC98_CHECK_MODEM_INTERVAL); 4587 com->modem_checking = 1; 4588 } 4589 splx(s); 4590} 4591 4592static void 4593pc98_disable_i8251_interrupt(struct com_s *com, int mod) 4594{ 4595 /* disable interrupt */ 4596 register int tmp; 4597 4598 mod |= ~(IEN_Tx|IEN_TxEMP|IEN_Rx); 4599 COM_INT_DISABLE 4600 tmp = inb( com->intr_ctrl_port ) & ~(IEN_Tx|IEN_TxEMP|IEN_Rx); 4601 outb( com->intr_ctrl_port, (com->intr_enable&=~mod) | tmp ); 4602 COM_INT_ENABLE 4603} 4604 4605static void 4606pc98_enable_i8251_interrupt(struct com_s *com, int mod) 4607{ 4608 register int tmp; 4609 4610 COM_INT_DISABLE 4611 tmp = inb( com->intr_ctrl_port ) & ~(IEN_Tx|IEN_TxEMP|IEN_Rx); 4612 outb( com->intr_ctrl_port, (com->intr_enable|=mod) | tmp ); 4613 COM_INT_ENABLE 4614} 4615 4616static int 4617pc98_check_i8251_interrupt(struct com_s *com) 4618{ 4619 return ( com->intr_enable & 0x07 ); 4620} 4621 4622static void 4623pc98_i8251_clear_cmd(struct com_s *com, int x) 4624{ 4625 int tmp; 4626 4627 COM_INT_DISABLE 4628 tmp = com->pc98_prev_siocmd & ~(x); 4629 outb(com->cmd_port, tmp); 4630 com->pc98_prev_siocmd = tmp & ~(CMD8251_ER|CMD8251_RESET|CMD8251_EH); 4631 COM_INT_ENABLE 4632} 4633 4634static void 4635pc98_i8251_or_cmd(struct com_s *com, int x) 4636{ 4637 int tmp; 4638 4639 COM_INT_DISABLE 4640 tmp = com->pc98_prev_siocmd | (x); 4641 outb(com->cmd_port, tmp); 4642 com->pc98_prev_siocmd = tmp & ~(CMD8251_ER|CMD8251_RESET|CMD8251_EH); 4643 COM_INT_ENABLE 4644} 4645 4646static void 4647pc98_i8251_set_cmd(struct com_s *com, int x) 4648{ 4649 int tmp; 4650 4651 COM_INT_DISABLE 4652 tmp = (x); 4653 outb(com->cmd_port, tmp); 4654 com->pc98_prev_siocmd = tmp & ~(CMD8251_ER|CMD8251_RESET|CMD8251_EH); 4655 COM_INT_ENABLE 4656} 4657 4658static void 4659pc98_i8251_clear_or_cmd(struct com_s *com, int clr, int x) 4660{ 4661 int tmp; 4662 COM_INT_DISABLE 4663 tmp = com->pc98_prev_siocmd & ~(clr); 4664 tmp |= (x); 4665 outb(com->cmd_port, tmp); 4666 com->pc98_prev_siocmd = tmp & ~(CMD8251_ER|CMD8251_RESET|CMD8251_EH); 4667 COM_INT_ENABLE 4668} 4669 4670static int 4671pc98_i8251_get_cmd(struct com_s *com) 4672{ 4673 return com->pc98_prev_siocmd; 4674} 4675 4676static int 4677pc98_i8251_get_mod(struct com_s *com) 4678{ 4679 return com->pc98_prev_siomod; 4680} 4681 4682static void 4683pc98_i8251_reset(struct com_s *com, int mode, int command) 4684{ 4685 outb(com->cmd_port, 0); /* dummy */ 4686 DELAY(2); 4687 outb(com->cmd_port, 0); /* dummy */ 4688 DELAY(2); 4689 outb(com->cmd_port, 0); /* dummy */ 4690 DELAY(2); 4691 outb(com->cmd_port, CMD8251_RESET); /* internal reset */ 4692 DELAY(2); 4693 outb(com->cmd_port, mode ); /* mode register */ 4694 com->pc98_prev_siomod = mode; 4695 DELAY(2); 4696 pc98_i8251_set_cmd( com, (command|CMD8251_ER) ); 4697} 4698 4699static void 4700pc98_check_sysclock(void) 4701{ 4702 /* get system clock from port */ 4703 if ( pc98_machine_type & M_8M ) { 4704 /* 8 MHz system & H98 */ 4705 sysclock = 8; 4706 } else { 4707 /* 5 MHz system */ 4708 sysclock = 5; 4709 } 4710} 4711 4712static void 4713com_cflag_and_speed_set( struct com_s *com, int cflag, int speed) 4714{ 4715 int cfcr=0, count; 4716 int previnterrupt; 4717 4718 count = pc98_ttspeedtab( com, speed ); 4719 if ( count < 0 ) return; 4720 4721 previnterrupt = pc98_check_i8251_interrupt(com); 4722 pc98_disable_i8251_interrupt( com, IEN_Tx|IEN_TxEMP|IEN_Rx ); 4723 4724 switch ( cflag&CSIZE ) { 4725 case CS5: 4726 cfcr = MOD8251_5BITS; break; 4727 case CS6: 4728 cfcr = MOD8251_6BITS; break; 4729 case CS7: 4730 cfcr = MOD8251_7BITS; break; 4731 case CS8: 4732 cfcr = MOD8251_8BITS; break; 4733 } 4734 if ( cflag&PARENB ) { 4735 if ( cflag&PARODD ) 4736 cfcr |= MOD8251_PODD; 4737 else 4738 cfcr |= MOD8251_PEVEN; 4739 } else 4740 cfcr |= MOD8251_PDISAB; 4741 4742 if ( cflag&CSTOPB ) 4743 cfcr |= MOD8251_STOP2; 4744 else 4745 cfcr |= MOD8251_STOP1; 4746 4747 if ( count & 0x10000 ) 4748 cfcr |= MOD8251_CLKX1; 4749 else 4750 cfcr |= MOD8251_CLKX16; 4751 4752 if (epson_machine_id != 0x20) { /* XXX */ 4753 int tmp; 4754 while (!((tmp = inb(com->sts_port)) & STS8251_TxEMP)) 4755 ; 4756 } 4757 /* set baud rate from ospeed */ 4758 pc98_set_baud_rate( com, count ); 4759 4760 if ( cfcr != pc98_i8251_get_mod(com) ) 4761 pc98_i8251_reset(com, cfcr, pc98_i8251_get_cmd(com) ); 4762 4763 pc98_enable_i8251_interrupt( com, previnterrupt ); 4764} 4765 4766static int 4767pc98_ttspeedtab(struct com_s *com, int speed) 4768{ 4769 int if_type, effect_sp, count = -1, mod; 4770 4771 if_type = com->pc98_if_type & 0x0f; 4772 4773 switch (com->pc98_if_type) { 4774 case COM_IF_INTERNAL: 4775 if (PC98SIO_baud_rate_port(if_type) != -1) { 4776 count = ttspeedtab(speed, if_8251_type[if_type].speedtab); 4777 if (count > 0) { 4778 count |= COM1_EXT_CLOCK; 4779 break; 4780 } 4781 } 4782 4783 /* for *1CLK asynchronous! mode, TEFUTEFU */ 4784 mod = (sysclock == 5) ? 2457600 : 1996800; 4785 effect_sp = ttspeedtab( speed, pc98speedtab ); 4786 if ( effect_sp < 0 ) /* XXX */ 4787 effect_sp = ttspeedtab( (speed - 1), pc98speedtab ); 4788 if ( effect_sp <= 0 ) 4789 return effect_sp; 4790 if ( effect_sp == speed ) 4791 mod /= 16; 4792 if ( mod % effect_sp ) 4793 return(-1); 4794 count = mod / effect_sp; 4795 if ( count > 65535 ) 4796 return(-1); 4797 if ( effect_sp != speed ) 4798 count |= 0x10000; 4799 break; 4800 case COM_IF_PC9861K_1: 4801 case COM_IF_PC9861K_2: 4802 count = 1; 4803 break; 4804 case COM_IF_IND_SS_1: 4805 case COM_IF_IND_SS_2: 4806 case COM_IF_PIO9032B_1: 4807 case COM_IF_PIO9032B_2: 4808 if ( speed == 0 ) return 0; 4809 count = ttspeedtab( speed, if_8251_type[if_type].speedtab ); 4810 break; 4811 case COM_IF_B98_01_1: 4812 case COM_IF_B98_01_2: 4813 if ( speed == 0 ) return 0; 4814 count = ttspeedtab( speed, if_8251_type[if_type].speedtab ); 4815#ifdef B98_01_OLD 4816 if (count == 0 || count == 1) { 4817 count += 4; 4818 count |= 0x20000; /* x1 mode for 76800 and 153600 */ 4819 } 4820#endif 4821 break; 4822 } 4823 4824 return count; 4825} 4826 4827static void 4828pc98_set_baud_rate( struct com_s *com, int count ) 4829{ 4830 int if_type, io, s; 4831 4832 if_type = com->pc98_if_type & 0x0f; 4833 io = com->iobase & 0xff00; 4834 4835 switch (com->pc98_if_type) { 4836 case COM_IF_INTERNAL: 4837 if (PC98SIO_baud_rate_port(if_type) != -1) { 4838 if (count & COM1_EXT_CLOCK) { 4839 outb((Port_t)PC98SIO_baud_rate_port(if_type), count & 0xff); 4840 break; 4841 } else { 4842 outb((Port_t)PC98SIO_baud_rate_port(if_type), 0x09); 4843 } 4844 } 4845 4846 if ( count < 0 ) { 4847 printf( "[ Illegal count : %d ]", count ); 4848 return; 4849 } else if ( count == 0 ) 4850 return; 4851 /* set i8253 */ 4852 s = splclock(); 4853 if (count != 3) 4854 outb( 0x77, 0xb6 ); 4855 else 4856 outb( 0x77, 0xb4 ); 4857 outb( 0x5f, 0); 4858 outb( 0x75, count & 0xff ); 4859 outb( 0x5f, 0); 4860 outb( 0x75, (count >> 8) & 0xff ); 4861 splx(s); 4862 break; 4863 case COM_IF_IND_SS_1: 4864 case COM_IF_IND_SS_2: 4865 outb(io | PC98SIO_intr_ctrl_port(if_type), 0); 4866 outb(io | PC98SIO_baud_rate_port(if_type), 0); 4867 outb(io | PC98SIO_baud_rate_port(if_type), 0xc0); 4868 outb(io | PC98SIO_baud_rate_port(if_type), (count >> 8) | 0x80); 4869 outb(io | PC98SIO_baud_rate_port(if_type), count & 0xff); 4870 break; 4871 case COM_IF_PIO9032B_1: 4872 case COM_IF_PIO9032B_2: 4873 outb(io | PC98SIO_baud_rate_port(if_type), count); 4874 break; 4875 case COM_IF_B98_01_1: 4876 case COM_IF_B98_01_2: 4877 outb(io | PC98SIO_baud_rate_port(if_type), count & 0x0f); 4878#ifdef B98_01_OLD 4879 /* 4880 * Some old B98_01 board should be controlled 4881 * in different way, but this hasn't been tested yet. 4882 */ 4883 outb(io | PC98SIO_func_port(if_type), 4884 (count & 0x20000) ? 0xf0 : 0xf2); 4885#endif 4886 break; 4887 } 4888} 4889static int 4890pc98_check_if_type(device_t dev, struct siodev *iod) 4891{ 4892 int irr, io, if_type, tmp; 4893 static short irq_tab[2][8] = { 4894 { 3, 5, 6, 9, 10, 12, 13, -1}, 4895 { 3, 10, 12, 13, 5, 6, 9, -1} 4896 }; 4897 4898 iod->if_type = if_type = (isa_get_flags(dev) >> 24) & 0xff; 4899 if ((if_type < 0 || if_type > COM_IF_END1) && 4900 (if_type < 0x10 || if_type > COM_IF_END2)) 4901 return(-1); 4902 if_type &= 0x0f; 4903 iod->irq = 0; 4904 io = isa_get_port(dev) & 0xff00; 4905 4906 if (IS_8251(iod->if_type)) { 4907 if (PC98SIO_func_port(if_type) != -1) { 4908 outb(io | PC98SIO_func_port(if_type), 0xf2); 4909 tmp = ttspeedtab(9600, if_8251_type[if_type].speedtab); 4910 if (tmp != -1 && PC98SIO_baud_rate_port(if_type) != -1) 4911 outb(io | PC98SIO_baud_rate_port(if_type), tmp); 4912 } 4913 4914 iod->cmd = io | PC98SIO_cmd_port(if_type); 4915 iod->sts = io | PC98SIO_sts_port(if_type); 4916 iod->mod = io | PC98SIO_in_modem_port(if_type); 4917 iod->ctrl = io | PC98SIO_intr_ctrl_port(if_type); 4918 4919 if (iod->if_type == COM_IF_INTERNAL) { 4920 iod->irq = 4; 4921 4922 /* XXX check new internal port. */ 4923 outb(0x138, 0); 4924 DELAY(10); 4925 for (tmp = 0; tmp < 100; tmp++) { 4926 if ((inb(0x138) & 1) == 0) { 4927 PC98SIO_baud_rate_port(if_type) = 0x13a; 4928 if_8251_type[if_type].name = " (internal fast)"; 4929 if_8251_type[if_type].speedtab = pc98fast_speedtab; 4930 break; 4931 } 4932 DELAY(1); 4933 } 4934 } else { 4935 tmp = inb( iod->mod ) & if_8251_type[if_type].irr_mask; 4936 if ((isa_get_port(dev) & 0xff) == IO_COM2) 4937 iod->irq = irq_tab[0][tmp]; 4938 else 4939 iod->irq = irq_tab[1][tmp]; 4940 } 4941 } else { 4942 irr = if_16550a_type[if_type].irr_read; 4943#ifdef COM_MULTIPORT 4944 if (!COM_ISMULTIPORT(dev) || dev->id_unit == COM_MPMASTER(dev)) 4945#endif 4946 if (irr != -1) { 4947 tmp = inb(io | irr); 4948 if (isa_get_port(dev) & 0x01) /* XXX depend on RSB-384 */ 4949 iod->irq = irq_tab[1][tmp >> 3]; 4950 else 4951 iod->irq = irq_tab[0][tmp & 0x07]; 4952 } 4953 } 4954 if ( iod->irq == -1 ) return -1; 4955 4956 return 0; 4957} 4958static int 4959pc98_set_ioport( struct com_s *com, int id_flags ) 4960{ 4961 int io, if_type; 4962 4963 if_type = (id_flags >> 24) & 0xff; 4964 if (IS_8251(if_type)) { 4965 pc98_check_sysclock(); 4966 io = com->iobase & 0xff00; 4967 com->pc98_if_type = if_type; 4968 if_type &= 0x0f; 4969 com->data_port = io | PC98SIO_data_port(if_type); 4970 com->cmd_port = io | PC98SIO_cmd_port(if_type); 4971 com->sts_port = io | PC98SIO_sts_port(if_type); 4972 com->in_modem_port = io | PC98SIO_in_modem_port(if_type); 4973 com->intr_ctrl_port = io | PC98SIO_intr_ctrl_port(if_type); 4974 return 0; 4975 } 4976 4977 return -1; 4978} 4979#endif /* PC98 defined */ 4980