Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/si/si.c
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1 /*- 2 * Device driver for Specialix range (SI/XIO) of serial line multiplexors. 3 * 4 * Copyright (C) 1990, 1992, 1998 Specialix International, 5 * Copyright (C) 1993, Andy Rutter <andy@acronym.co.uk> 6 * Copyright (C) 2000, Peter Wemm <peter@netplex.com.au> 7 * 8 * Originally derived from: SunOS 4.x version 9 * Ported from BSDI version to FreeBSD by Peter Wemm. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notices, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notices, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Andy Rutter of 22 * Advanced Methods and Tools Ltd. based on original information 23 * from Specialix International. 24 * 4. Neither the name of Advanced Methods and Tools, nor Specialix 25 * International may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED 29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 30 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 31 * NO EVENT SHALL THE AUTHORS BE LIABLE. 32 * 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD: releng/8.3/sys/dev/si/si.c 193018 2009-05-29 06:41:23Z ed $"); 37 38 #ifndef lint 39 static const char si_copyright1[] = "@(#) Copyright (C) Specialix International, 1990,1992,1998", 40 si_copyright2[] = "@(#) Copyright (C) Andy Rutter 1993", 41 si_copyright3[] = "@(#) Copyright (C) Peter Wemm 2000"; 42 #endif /* not lint */ 43 44 #include "opt_compat.h" 45 #include "opt_debug_si.h" 46 #include "opt_eisa.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/serial.h> 51 #include <sys/tty.h> 52 #include <sys/conf.h> 53 #include <sys/fcntl.h> 54 #include <sys/kernel.h> 55 #include <sys/malloc.h> 56 #include <sys/priv.h> 57 #include <sys/sysctl.h> 58 #include <sys/bus.h> 59 #include <machine/bus.h> 60 #include <sys/rman.h> 61 #include <machine/resource.h> 62 63 64 #include <vm/vm.h> 65 #include <vm/pmap.h> 66 67 #include <machine/stdarg.h> 68 69 #include <dev/si/sireg.h> 70 #include <dev/si/sivar.h> 71 #include <dev/si/si.h> 72 73 /* 74 * This device driver is designed to interface the Specialix International 75 * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA, 76 * EISA or PCI bus machine. 77 * 78 * The controller is interfaced to the host via dual port RAM 79 * and an interrupt. 80 * 81 * The code for the Host 1 (very old ISA cards) has not been tested. 82 */ 83 84 #undef POLL /* turn on poller to scan for lost interrupts */ 85 #if 0 86 #define REALPOLL /* on each poll, scan for work regardless */ 87 #endif 88 #define POLLHZ (hz/10) /* 10 times per second */ 89 #define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE) 90 #define INT_COUNT 25000 /* max of 125 ints per second */ 91 #define JET_INT_COUNT 100 /* max of 100 ints per second */ 92 #define RXINT_COUNT 1 /* one rxint per 10 milliseconds */ 93 94 static void si_command(struct si_port *, int, int); 95 static int si_Sioctl(struct cdev *, u_long, caddr_t, int, struct thread *); 96 /* static void si_stop(struct tty *, int); */ 97 #if 0 98 static timeout_t si_lstart; 99 #endif 100 101 static tsw_outwakeup_t si_start; 102 static tsw_ioctl_t siioctl; 103 static tsw_close_t siclose; 104 static tsw_modem_t simodem; 105 static tsw_open_t siopen; 106 static tsw_param_t siparam; 107 108 static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip); 109 static char * si_modulename(int host_type, int uart_type); 110 111 static struct cdevsw si_Scdevsw = { 112 .d_version = D_VERSION, 113 .d_ioctl = si_Sioctl, 114 .d_name = "si", 115 .d_flags = D_TTY | D_NEEDGIANT, 116 }; 117 118 static int si_Nports; 119 static int si_Nmodules; 120 static int si_debug; 121 122 SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, ""); 123 TUNABLE_INT("machdep.si_debug", &si_debug); 124 125 static int si_numunits; 126 127 devclass_t si_devclass; 128 129 struct si_speedtab { 130 int sp_speed; /* Speed. */ 131 int sp_code; /* Code. */ 132 }; 133 134 #ifndef B2000 /* not standard, but the hardware knows it. */ 135 # define B2000 2000 136 #endif 137 static struct si_speedtab bdrates[] = { 138 { B75, CLK75, }, /* 0x0 */ 139 { B110, CLK110, }, /* 0x1 */ 140 { B150, CLK150, }, /* 0x3 */ 141 { B300, CLK300, }, /* 0x4 */ 142 { B600, CLK600, }, /* 0x5 */ 143 { B1200, CLK1200, }, /* 0x6 */ 144 { B2000, CLK2000, }, /* 0x7 */ 145 { B2400, CLK2400, }, /* 0x8 */ 146 { B4800, CLK4800, }, /* 0x9 */ 147 { B9600, CLK9600, }, /* 0xb */ 148 { B19200, CLK19200, }, /* 0xc */ 149 { B38400, CLK38400, }, /* 0x2 (out of order!) */ 150 { B57600, CLK57600, }, /* 0xd */ 151 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */ 152 { -1, -1 }, 153 }; 154 155 156 #ifdef POLL 157 static int si_pollrate; /* in addition to irq */ 158 static int si_realpoll = 0; /* poll HW on timer */ 159 160 SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, ""); 161 SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, ""); 162 163 static int init_finished = 0; 164 static void si_poll(void *); 165 #endif 166 167 /* 168 * Array of adapter types and the corresponding RAM size. The order of 169 * entries here MUST match the ordinal of the adapter type. 170 */ 171 static const char *si_type[] = { 172 "EMPTY", 173 "SIHOST", 174 "SIMCA", /* FreeBSD does not support Microchannel */ 175 "SIHOST2", 176 "SIEISA", 177 "SIPCI", 178 "SXPCI", 179 "SXISA", 180 }; 181 182 #ifdef SI_DEBUG 183 static char * 184 si_cmdname(int cmd) 185 { 186 static char buf[32]; 187 188 switch (cmd) { 189 case IDLE_OPEN: return("IDLE_OPEN"); 190 case LOPEN: return("LOPEN"); 191 case MOPEN: return("MOPEN"); 192 case MPEND: return("MPEND"); 193 case CONFIG: return("CONFIG"); 194 case CLOSE: return("CLOSE"); 195 case SBREAK: return("SBREAK"); 196 case EBREAK: return("EBREAK"); 197 case IDLE_CLOSE: return("IDLE_CLOSE"); 198 case IDLE_BREAK: return("IDLE_BREAK"); 199 case FCLOSE: return("FCLOSE"); 200 case RESUME: return("RESUME"); 201 case WFLUSH: return("WFLUSH"); 202 case RFLUSH: return("RFLUSH"); 203 default: 204 sprintf(buf, "?cmd:0x%x?", cmd); 205 return (buf); 206 } 207 } 208 #endif 209 210 /* 211 * We have to make an 8 bit version of bcopy, since some cards can't 212 * deal with 32 bit I/O 213 */ 214 static void __inline 215 si_bcopy(const void *src, void *dst, size_t len) 216 { 217 u_char *d; 218 const u_char *s; 219 220 d = dst; 221 s = src; 222 while (len--) 223 *d++ = *s++; 224 } 225 static void __inline 226 si_vbcopy(const volatile void *src, void *dst, size_t len) 227 { 228 u_char *d; 229 const volatile u_char *s; 230 231 d = dst; 232 s = src; 233 while (len--) 234 *d++ = *s++; 235 } 236 static void __inline 237 si_bcopyv(const void *src, volatile void *dst, size_t len) 238 { 239 volatile u_char *d; 240 const u_char *s; 241 242 d = dst; 243 s = src; 244 while (len--) 245 *d++ = *s++; 246 } 247 248 static int 249 si_speedtab(int speed, struct si_speedtab *table) 250 { 251 for ( ; table->sp_speed != -1; table++) 252 if (table->sp_speed == speed) 253 return (table->sp_code); 254 return (-1); 255 } 256 257 258 static struct ttydevsw si_tty_class = { 259 .tsw_flags = TF_INITLOCK|TF_CALLOUT, 260 .tsw_open = siopen, 261 .tsw_close = siclose, 262 .tsw_outwakeup = si_start, 263 /* .tsw_stop = si_stop */ 264 .tsw_ioctl = siioctl, 265 .tsw_param = siparam, 266 .tsw_modem = simodem, 267 }; 268 269 270 /* 271 * Attach the device. Initialize the card. 272 */ 273 int 274 siattach(device_t dev) 275 { 276 int unit; 277 struct si_softc *sc; 278 struct si_port *pp; 279 struct tty *tp; 280 volatile struct si_channel *ccbp; 281 volatile struct si_reg *regp; 282 volatile caddr_t maddr; 283 struct si_module *modp; 284 int nmodule, nport, x, y; 285 int uart_type; 286 287 sc = device_get_softc(dev); 288 unit = device_get_unit(dev); 289 290 sc->sc_typename = si_type[sc->sc_type]; 291 if (si_numunits < unit + 1) 292 si_numunits = unit + 1; 293 294 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit)); 295 296 #ifdef POLL 297 if (si_pollrate == 0) { 298 si_pollrate = POLLHZ; /* in addition to irq */ 299 #ifdef REALPOLL 300 si_realpoll = 1; /* scan always */ 301 #endif 302 } 303 #endif 304 305 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit, 306 sc->sc_typename, sc->sc_paddr, sc->sc_maddr)); 307 308 sc->sc_ports = NULL; /* mark as uninitialised */ 309 310 maddr = sc->sc_maddr; 311 312 /* Stop the CPU first so it won't stomp around while we load */ 313 314 switch (sc->sc_type) { 315 #ifdef DEV_EISA 316 case SIEISA: 317 outb(sc->sc_iobase + 2, sc->sc_irq << 4); 318 #endif 319 break; 320 case SIPCI: 321 *(maddr+SIPCIRESET) = 0; 322 break; 323 case SIJETPCI: /* fall through to JET ISA */ 324 case SIJETISA: 325 *(maddr+SIJETCONFIG) = 0; 326 break; 327 case SIHOST2: 328 *(maddr+SIPLRESET) = 0; 329 break; 330 case SIHOST: 331 *(maddr+SIRESET) = 0; 332 break; 333 default: /* this should never happen */ 334 printf("si%d: unsupported configuration\n", unit); 335 return EINVAL; 336 break; 337 } 338 339 /* OK, now lets download the download code */ 340 341 if (SI_ISJET(sc->sc_type)) { 342 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n", 343 unit, si3_t225_dsize)); 344 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr, 345 si3_t225_dsize); 346 DPRINT((0, DBG_DOWNLOAD, 347 "si%d: jet_bootstrap: nbytes %d -> %x\n", 348 unit, si3_t225_bsize, si3_t225_bootloadaddr)); 349 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr, 350 si3_t225_bsize); 351 } else { 352 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n", 353 unit, si2_z280_dsize)); 354 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr, 355 si2_z280_dsize); 356 } 357 358 /* Now start the CPU */ 359 360 switch (sc->sc_type) { 361 #ifdef DEV_EISA 362 case SIEISA: 363 /* modify the download code to tell it that it's on an EISA */ 364 *(maddr + 0x42) = 1; 365 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4); 366 (void)inb(sc->sc_iobase + 3); /* reset interrupt */ 367 break; 368 #endif 369 case SIPCI: 370 /* modify the download code to tell it that it's on a PCI */ 371 *(maddr+0x42) = 1; 372 *(maddr+SIPCIRESET) = 1; 373 *(maddr+SIPCIINTCL) = 0; 374 break; 375 case SIJETPCI: 376 *(maddr+SIJETRESET) = 0; 377 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN; 378 break; 379 case SIJETISA: 380 *(maddr+SIJETRESET) = 0; 381 switch (sc->sc_irq) { 382 case 9: 383 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90; 384 break; 385 case 10: 386 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0; 387 break; 388 case 11: 389 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0; 390 break; 391 case 12: 392 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0; 393 break; 394 case 15: 395 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0; 396 break; 397 } 398 break; 399 case SIHOST: 400 *(maddr+SIRESET_CL) = 0; 401 *(maddr+SIINTCL_CL) = 0; 402 break; 403 case SIHOST2: 404 *(maddr+SIPLRESET) = 0x10; 405 switch (sc->sc_irq) { 406 case 11: 407 *(maddr+SIPLIRQ11) = 0x10; 408 break; 409 case 12: 410 *(maddr+SIPLIRQ12) = 0x10; 411 break; 412 case 15: 413 *(maddr+SIPLIRQ15) = 0x10; 414 break; 415 } 416 *(maddr+SIPLIRQCLR) = 0x10; 417 break; 418 default: /* this should _REALLY_ never happen */ 419 printf("si%d: Uh, it was supported a second ago...\n", unit); 420 return EINVAL; 421 } 422 423 DELAY(1000000); /* wait around for a second */ 424 425 regp = (struct si_reg *)maddr; 426 y = 0; 427 /* wait max of 5 sec for init OK */ 428 while (regp->initstat == 0 && y++ < 10) { 429 DELAY(500000); 430 } 431 switch (regp->initstat) { 432 case 0: 433 printf("si%d: startup timeout - aborting\n", unit); 434 sc->sc_type = SIEMPTY; 435 return EINVAL; 436 case 1: 437 if (SI_ISJET(sc->sc_type)) { 438 /* set throttle to 100 times per second */ 439 regp->int_count = JET_INT_COUNT; 440 /* rx_intr_count is a NOP in Jet */ 441 } else { 442 /* set throttle to 125 times per second */ 443 regp->int_count = INT_COUNT; 444 /* rx intr max of 25 times per second */ 445 regp->rx_int_count = RXINT_COUNT; 446 } 447 regp->int_pending = 0; /* no intr pending */ 448 regp->int_scounter = 0; /* reset counter */ 449 break; 450 case 0xff: 451 /* 452 * No modules found, so give up on this one. 453 */ 454 printf("si%d: %s - no ports found\n", unit, 455 si_type[sc->sc_type]); 456 return 0; 457 default: 458 printf("si%d: download code version error - initstat %x\n", 459 unit, regp->initstat); 460 return EINVAL; 461 } 462 463 /* 464 * First time around the ports just count them in order 465 * to allocate some memory. 466 */ 467 nport = 0; 468 modp = (struct si_module *)(maddr + 0x80); 469 for (;;) { 470 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp)); 471 switch (modp->sm_type) { 472 case TA4: 473 DPRINT((0, DBG_DOWNLOAD, 474 "si%d: Found old TA4 module, 4 ports\n", 475 unit)); 476 x = 4; 477 break; 478 case TA8: 479 DPRINT((0, DBG_DOWNLOAD, 480 "si%d: Found old TA8 module, 8 ports\n", 481 unit)); 482 x = 8; 483 break; 484 case TA4_ASIC: 485 DPRINT((0, DBG_DOWNLOAD, 486 "si%d: Found ASIC TA4 module, 4 ports\n", 487 unit)); 488 x = 4; 489 break; 490 case TA8_ASIC: 491 DPRINT((0, DBG_DOWNLOAD, 492 "si%d: Found ASIC TA8 module, 8 ports\n", 493 unit)); 494 x = 8; 495 break; 496 case MTA: 497 DPRINT((0, DBG_DOWNLOAD, 498 "si%d: Found CD1400 module, 8 ports\n", 499 unit)); 500 x = 8; 501 break; 502 case SXDC: 503 DPRINT((0, DBG_DOWNLOAD, 504 "si%d: Found SXDC module, 8 ports\n", 505 unit)); 506 x = 8; 507 break; 508 default: 509 printf("si%d: unknown module type %d\n", 510 unit, modp->sm_type); 511 goto try_next; 512 } 513 514 /* this was limited in firmware and is also a driver issue */ 515 if ((nport + x) > SI_MAXPORTPERCARD) { 516 printf("si%d: extra ports ignored\n", unit); 517 goto try_next; 518 } 519 520 nport += x; 521 si_Nports += x; 522 si_Nmodules++; 523 524 try_next: 525 if (modp->sm_next == 0) 526 break; 527 modp = (struct si_module *) 528 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 529 } 530 sc->sc_ports = (struct si_port *)malloc(sizeof(struct si_port) * nport, 531 M_DEVBUF, M_NOWAIT | M_ZERO); 532 if (sc->sc_ports == 0) { 533 printf("si%d: fail to malloc memory for port structs\n", 534 unit); 535 return EINVAL; 536 } 537 sc->sc_nport = nport; 538 539 /* 540 * Scan round the ports again, this time initialising. 541 */ 542 pp = sc->sc_ports; 543 nmodule = 0; 544 modp = (struct si_module *)(maddr + 0x80); 545 uart_type = 1000; /* arbitary, > uchar_max */ 546 for (;;) { 547 switch (modp->sm_type) { 548 case TA4: 549 nport = 4; 550 break; 551 case TA8: 552 nport = 8; 553 break; 554 case TA4_ASIC: 555 nport = 4; 556 break; 557 case TA8_ASIC: 558 nport = 8; 559 break; 560 case MTA: 561 nport = 8; 562 break; 563 case SXDC: 564 nport = 8; 565 break; 566 default: 567 goto try_next2; 568 } 569 nmodule++; 570 ccbp = (struct si_channel *)((char *)modp + 0x100); 571 if (uart_type == 1000) 572 uart_type = ccbp->type; 573 else if (uart_type != ccbp->type) 574 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n", 575 unit, nmodule, 576 ccbp->type, si_modulename(sc->sc_type, ccbp->type), 577 uart_type, si_modulename(sc->sc_type, uart_type)); 578 579 for (x = 0; x < nport; x++, pp++, ccbp++) { 580 pp->sp_ccb = ccbp; /* save the address */ 581 pp->sp_pend = IDLE_CLOSE; 582 pp->sp_state = 0; /* internal flag */ 583 #ifdef SI_DEBUG 584 sprintf(pp->sp_name, "si%r%r", unit, 585 (int)(pp - sc->sc_ports)); 586 #endif 587 tp = pp->sp_tty = tty_alloc_mutex(&si_tty_class, pp, &Giant); 588 tty_makedev(tp, NULL, "A%r%r", unit, (int)(pp - sc->sc_ports)); 589 } 590 try_next2: 591 if (modp->sm_next == 0) { 592 printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n", 593 unit, 594 sc->sc_typename, 595 sc->sc_nport, 596 nmodule, 597 uart_type, 598 si_modulename(sc->sc_type, uart_type)); 599 break; 600 } 601 modp = (struct si_module *) 602 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 603 } 604 605 if (unit == 0) 606 make_dev(&si_Scdevsw, 0, UID_ROOT, GID_WHEEL, 0600, 607 "si_control"); 608 return (0); 609 } 610 611 static int 612 siopen(struct tty *tp) 613 { 614 615 DPRINT((0, DBG_ENTRY|DBG_OPEN, "siopen()\n")); 616 mtx_assert(&Giant, MA_OWNED); 617 #ifdef POLL 618 /* 619 * We've now got a device, so start the poller. 620 */ 621 if (init_finished == 0) { 622 timeout(si_poll, (caddr_t)0L, si_pollrate); 623 init_finished = 1; 624 } 625 #endif 626 DPRINT((0, DBG_EXIT|DBG_OPEN, "siopen() finished\n")); 627 return(0); 628 } 629 630 static void 631 siclose(struct tty *tp) 632 { 633 struct si_port *pp; 634 635 DPRINT((0, DBG_ENTRY|DBG_CLOSE, "siclose()\n")); 636 mtx_assert(&Giant, MA_OWNED); 637 pp = tty_softc(tp); 638 (void) si_command(pp, FCLOSE, SI_WAIT); 639 DPRINT((0, DBG_EXIT|DBG_CLOSE, "siclose() finished\n")); 640 } 641 642 static int 643 siioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td) 644 { 645 struct si_port *pp; 646 647 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "siioctl(0x%lx,0x%x)\n", cmd, data)); 648 mtx_assert(&Giant, MA_OWNED); 649 pp = tty_softc(tp); 650 switch (cmd) { 651 case TIOCSBRK: 652 si_command(pp, SBREAK, SI_WAIT); 653 return (0); 654 case TIOCCBRK: 655 si_command(pp, EBREAK, SI_WAIT); 656 return (0); 657 } 658 return (ENOIOCTL); /* Let the common tty ioctl handler do it */ 659 } 660 661 /* 662 * Handle the Specialix ioctls on the control dev. 663 */ 664 static int 665 si_Sioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 666 { 667 struct si_softc *xsc; 668 struct si_port *xpp; 669 volatile struct si_reg *regp; 670 struct si_tcsi *dp; 671 struct si_pstat *sps; 672 int *ip, error = 0; 673 int oldspl; 674 int card, port; 675 676 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,0x%lx,0x%x)\n", 677 devtoname(dev), cmd, data)); 678 mtx_assert(&Giant, MA_OWNED); 679 680 #if 1 681 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT)); 682 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB)); 683 #endif 684 685 oldspl = spltty(); /* better safe than sorry */ 686 687 ip = (int *)data; 688 689 #define SUCHECK if ((error = priv_check(td, PRIV_DRIVER))) goto out 690 691 switch (cmd) { 692 case TCSIPORTS: 693 *ip = si_Nports; 694 goto out; 695 case TCSIMODULES: 696 *ip = si_Nmodules; 697 goto out; 698 case TCSISDBG_ALL: 699 SUCHECK; 700 si_debug = *ip; 701 goto out; 702 case TCSIGDBG_ALL: 703 *ip = si_debug; 704 goto out; 705 default: 706 /* 707 * Check that a controller for this port exists 708 */ 709 710 /* may also be a struct si_pstat, a superset of si_tcsi */ 711 712 dp = (struct si_tcsi *)data; 713 sps = (struct si_pstat *)data; 714 card = dp->tc_card; 715 xsc = devclass_get_softc(si_devclass, card); /* check.. */ 716 if (xsc == NULL || xsc->sc_type == SIEMPTY) { 717 error = ENOENT; 718 goto out; 719 } 720 /* 721 * And check that a port exists 722 */ 723 port = dp->tc_port; 724 if (port < 0 || port >= xsc->sc_nport) { 725 error = ENOENT; 726 goto out; 727 } 728 xpp = xsc->sc_ports + port; 729 regp = (struct si_reg *)xsc->sc_maddr; 730 } 731 732 switch (cmd) { 733 case TCSIDEBUG: 734 #ifdef SI_DEBUG 735 SUCHECK; 736 if (xpp->sp_debug) 737 xpp->sp_debug = 0; 738 else { 739 xpp->sp_debug = DBG_ALL; 740 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n", 741 (xpp->sp_debug&DBG_ALL)?"ON":"OFF")); 742 } 743 break; 744 #else 745 error = ENODEV; 746 goto out; 747 #endif 748 case TCSISDBG_LEVEL: 749 case TCSIGDBG_LEVEL: 750 #ifdef SI_DEBUG 751 if (cmd == TCSIGDBG_LEVEL) { 752 dp->tc_dbglvl = xpp->sp_debug; 753 } else { 754 SUCHECK; 755 xpp->sp_debug = dp->tc_dbglvl; 756 } 757 break; 758 #else 759 error = ENODEV; 760 goto out; 761 #endif 762 case TCSIGRXIT: 763 dp->tc_int = regp->rx_int_count; 764 break; 765 case TCSIRXIT: 766 SUCHECK; 767 regp->rx_int_count = dp->tc_int; 768 break; 769 case TCSIGIT: 770 dp->tc_int = regp->int_count; 771 break; 772 case TCSIIT: 773 SUCHECK; 774 regp->int_count = dp->tc_int; 775 break; 776 case TCSISTATE: 777 dp->tc_int = xpp->sp_ccb->hi_ip; 778 break; 779 /* these next three use a different structure */ 780 case TCSI_PORT: 781 SUCHECK; 782 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport)); 783 break; 784 case TCSI_CCB: 785 SUCHECK; 786 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb)); 787 break; 788 default: 789 error = EINVAL; 790 goto out; 791 } 792 out: 793 splx(oldspl); 794 return(error); /* success */ 795 } 796 797 /* 798 * siparam() : Configure line params 799 * called at spltty(); 800 * this may sleep, does not flush, nor wait for drain, nor block writes 801 * caller must arrange this if it's important.. 802 */ 803 static int 804 siparam(struct tty *tp, struct termios *t) 805 { 806 struct si_port *pp = tty_softc(tp); 807 volatile struct si_channel *ccbp; 808 int oldspl, cflag, iflag, oflag, lflag; 809 int error = 0; /* shutup gcc */ 810 int ispeed = 0; /* shutup gcc */ 811 int ospeed = 0; /* shutup gcc */ 812 BYTE val; 813 814 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t)); 815 mtx_assert(&Giant, MA_OWNED); 816 cflag = t->c_cflag; 817 iflag = t->c_iflag; 818 oflag = t->c_oflag; 819 lflag = t->c_lflag; 820 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n", 821 oflag, cflag, iflag, lflag)); 822 823 /* XXX - if Jet host and SXDC module, use extended baud rates */ 824 825 /* if not hung up.. */ 826 if (t->c_ospeed != 0) { 827 /* translate baud rate to firmware values */ 828 ospeed = si_speedtab(t->c_ospeed, bdrates); 829 ispeed = t->c_ispeed ? 830 si_speedtab(t->c_ispeed, bdrates) : ospeed; 831 /* enforce legit baud rate */ 832 if (ospeed < 0 || ispeed < 0) 833 return (EINVAL); 834 } 835 836 oldspl = spltty(); 837 838 ccbp = pp->sp_ccb; 839 840 /* ========== set hi_break ========== */ 841 val = 0; 842 if (iflag & IGNBRK) /* Breaks */ 843 val |= BR_IGN; 844 if (iflag & BRKINT) /* Interrupt on break? */ 845 val |= BR_INT; 846 if (iflag & PARMRK) /* Parity mark? */ 847 val |= BR_PARMRK; 848 if (iflag & IGNPAR) /* Ignore chars with parity errors? */ 849 val |= BR_PARIGN; 850 ccbp->hi_break = val; 851 852 /* ========== set hi_csr ========== */ 853 /* if not hung up.. */ 854 if (t->c_ospeed != 0) { 855 /* Set I/O speeds */ 856 val = (ispeed << 4) | ospeed; 857 } 858 ccbp->hi_csr = val; 859 860 /* ========== set hi_mr2 ========== */ 861 val = 0; 862 if (cflag & CSTOPB) /* Stop bits */ 863 val |= MR2_2_STOP; 864 else 865 val |= MR2_1_STOP; 866 867 /* 868 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 869 * a DCE, hence the reverse sense of RTS and CTS 870 */ 871 /* Output Flow - RTS must be raised before data can be sent */ 872 if (cflag & CCTS_OFLOW) 873 val |= MR2_RTSCONT; 874 875 ccbp->hi_mr2 = val; 876 877 /* ========== set hi_mr1 ========== */ 878 val = 0; 879 if (!(cflag & PARENB)) /* Parity */ 880 val |= MR1_NONE; 881 else 882 val |= MR1_WITH; 883 if (cflag & PARODD) 884 val |= MR1_ODD; 885 886 if ((cflag & CS8) == CS8) /* 8 data bits? */ 887 val |= MR1_8_BITS; 888 else if ((cflag & CS7) == CS7) /* 7 data bits? */ 889 val |= MR1_7_BITS; 890 else if ((cflag & CS6) == CS6) /* 6 data bits? */ 891 val |= MR1_6_BITS; 892 else /* Must be 5 */ 893 val |= MR1_5_BITS; 894 895 /* 896 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 897 * a DCE, hence the reverse sense of RTS and CTS 898 */ 899 /* Input Flow - CTS is raised when port is ready to receive data */ 900 if (cflag & CRTS_IFLOW) 901 val |= MR1_CTSCONT; 902 903 ccbp->hi_mr1 = val; 904 905 /* ========== set hi_mask ========== */ 906 val = 0xff; 907 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 908 val &= 0xFF; 909 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 910 val &= 0x7F; 911 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 912 val &= 0x3F; 913 } else { /* Must be 5 */ 914 val &= 0x1F; 915 } 916 if (iflag & ISTRIP) 917 val &= 0x7F; 918 919 ccbp->hi_mask = val; 920 921 /* ========== set hi_prtcl ========== */ 922 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */ 923 if (iflag & IXANY) 924 val |= SP_TANY; 925 if (iflag & IXON) 926 val |= SP_TXEN; 927 if (iflag & IXOFF) 928 val |= SP_RXEN; 929 if (iflag & INPCK) 930 val |= SP_PAEN; 931 932 ccbp->hi_prtcl = val; 933 934 935 /* ========== set hi_{rx|tx}{on|off} ========== */ 936 /* XXX: the card TOTALLY shields us from the flow control... */ 937 ccbp->hi_txon = t->c_cc[VSTART]; 938 ccbp->hi_txoff = t->c_cc[VSTOP]; 939 940 ccbp->hi_rxon = t->c_cc[VSTART]; 941 ccbp->hi_rxoff = t->c_cc[VSTOP]; 942 943 /* ========== send settings to the card ========== */ 944 /* potential sleep here */ 945 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */ 946 si_command(pp, LOPEN, SI_WAIT); /* open it */ 947 else 948 si_command(pp, CONFIG, SI_WAIT); /* change params */ 949 950 /* ========== set DTR etc ========== */ 951 /* Hangup if ospeed == 0 */ 952 if (t->c_ospeed == 0) { 953 (void) simodem(tp, 0, SER_DTR | SER_RTS); 954 } else { 955 /* 956 * If the previous speed was 0, may need to re-enable 957 * the modem signals 958 */ 959 (void) simodem(tp, SER_DTR | SER_RTS, 0); 960 } 961 962 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x HI_CSR %x\n", 963 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break, ccbp->hi_csr)); 964 965 splx(oldspl); 966 return(error); 967 } 968 969 /* 970 * Set/Get state of modem control lines. 971 * Due to DCE-like behaviour of the adapter, some signals need translation: 972 * TIOCM_DTR DSR 973 * TIOCM_RTS CTS 974 */ 975 static int 976 simodem(struct tty *tp, int sigon, int sigoff) 977 { 978 struct si_port *pp; 979 volatile struct si_channel *ccbp; 980 int x; 981 982 pp = tty_softc(tp); 983 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "simodem(%x,%x)\n", sigon, sigoff)); 984 mtx_assert(&Giant, MA_OWNED); 985 ccbp = pp->sp_ccb; /* Find channel address */ 986 if (sigon == 0 && sigoff == 0) { 987 x = ccbp->hi_ip; 988 /* 989 * XXX: not sure this is correct, should it be CTS&DSR ? 990 * XXX: or do we (just) miss CTS & DSR ? 991 */ 992 if (x & IP_DCD) sigon |= SER_DCD; 993 if (x & IP_DTR) sigon |= SER_DTR; 994 if (x & IP_RTS) sigon |= SER_RTS; 995 if (x & IP_RI) sigon |= SER_RI; 996 return (sigon); 997 } 998 999 x = ccbp->hi_op; 1000 if (sigon & SER_DTR) 1001 x |= OP_DSR; 1002 if (sigoff & SER_DTR) 1003 x &= ~OP_DSR; 1004 if (sigon & SER_RTS) 1005 x |= OP_CTS; 1006 if (sigoff & SER_RTS) 1007 x &= ~OP_CTS; 1008 ccbp->hi_op = x; 1009 return 0; 1010 } 1011 1012 /* 1013 * Handle change of modem state 1014 */ 1015 static void 1016 si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip) 1017 { 1018 /* if a modem dev */ 1019 mtx_assert(&Giant, MA_OWNED); 1020 if (hi_ip & IP_DCD) { 1021 if (!(pp->sp_last_hi_ip & IP_DCD)) { 1022 DPRINT((pp, DBG_INTR, "modem carr on%d\n")); 1023 (void)ttydisc_modem(tp, 1); 1024 } 1025 } else { 1026 if (pp->sp_last_hi_ip & IP_DCD) { 1027 DPRINT((pp, DBG_INTR, "modem carr off\n")); 1028 #if 0 /* XXX mpsafetty ttyld_modem used to tell us to shutdown the port or not */ 1029 if (ttydisc_modem(tp, 0)) 1030 (void) simodem(tp, 0, SER_DTR | SER_RTS); 1031 #else 1032 ttydisc_modem(tp, 0); 1033 #endif 1034 } 1035 } 1036 pp->sp_last_hi_ip = hi_ip; 1037 1038 } 1039 1040 /* 1041 * Poller to catch missed interrupts. 1042 * 1043 * Note that the SYSV Specialix drivers poll at 100 times per second to get 1044 * better response. We could really use a "periodic" version timeout(). :-) 1045 */ 1046 #ifdef POLL 1047 static void 1048 si_poll(void *nothing) 1049 { 1050 struct si_softc *sc; 1051 int i; 1052 volatile struct si_reg *regp; 1053 struct si_port *pp; 1054 int lost, oldspl, port; 1055 1056 DPRINT((0, DBG_POLL, "si_poll()\n")); 1057 oldspl = spltty(); 1058 mtx_assert(&Giant, MA_OWNED); 1059 lost = 0; 1060 for (i = 0; i < si_numunits; i++) { 1061 sc = devclass_get_softc(si_devclass, i); 1062 if (sc == NULL || sc->sc_type == SIEMPTY) 1063 continue; 1064 regp = (struct si_reg *)sc->sc_maddr; 1065 1066 /* 1067 * See if there has been a pending interrupt for 2 seconds 1068 * or so. The test (int_scounter >= 200) won't correspond 1069 * to 2 seconds if int_count gets changed. 1070 */ 1071 if (regp->int_pending != 0) { 1072 if (regp->int_scounter >= 200 && 1073 regp->initstat == 1) { 1074 printf("si%d: lost intr\n", i); 1075 lost++; 1076 } 1077 } else { 1078 regp->int_scounter = 0; 1079 } 1080 1081 /* 1082 * gripe about no input flow control.. 1083 */ 1084 pp = sc->sc_ports; 1085 for (port = 0; port < sc->sc_nport; pp++, port++) { 1086 if (pp->sp_delta_overflows > 0) { 1087 printf("si%d: %d tty level buffer overflows\n", 1088 i, pp->sp_delta_overflows); 1089 pp->sp_delta_overflows = 0; 1090 } 1091 } 1092 } 1093 if (lost || si_realpoll) 1094 si_intr(NULL); /* call intr with fake vector */ 1095 splx(oldspl); 1096 1097 timeout(si_poll, (caddr_t)0L, si_pollrate); 1098 } 1099 #endif /* ifdef POLL */ 1100 1101 /* 1102 * The interrupt handler polls ALL ports on ALL adapters each time 1103 * it is called. 1104 */ 1105 1106 static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */ 1107 static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */ 1108 1109 void 1110 si_intr(void *arg) 1111 { 1112 struct si_softc *sc; 1113 struct si_port *pp; 1114 volatile struct si_channel *ccbp; 1115 struct tty *tp; 1116 volatile caddr_t maddr; 1117 BYTE op, ip; 1118 int x, card, port, n, i, isopen; 1119 volatile BYTE *z; 1120 BYTE c; 1121 1122 sc = arg; 1123 mtx_assert(&Giant, MA_OWNED); 1124 1125 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n")); 1126 1127 /* 1128 * When we get an int we poll all the channels and do ALL pending 1129 * work, not just the first one we find. This allows all cards to 1130 * share the same vector. 1131 * 1132 * XXX - But if we're sharing the vector with something that's NOT 1133 * a SI/XIO/SX card, we may be making more work for ourselves. 1134 */ 1135 for (card = 0; card < si_numunits; card++) { 1136 sc = devclass_get_softc(si_devclass, card); 1137 if (sc == NULL || sc->sc_type == SIEMPTY) 1138 continue; 1139 1140 /* 1141 * First, clear the interrupt 1142 */ 1143 switch(sc->sc_type) { 1144 case SIHOST: 1145 maddr = sc->sc_maddr; 1146 ((volatile struct si_reg *)maddr)->int_pending = 0; 1147 /* flag nothing pending */ 1148 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */ 1149 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */ 1150 break; 1151 case SIHOST2: 1152 maddr = sc->sc_maddr; 1153 ((volatile struct si_reg *)maddr)->int_pending = 0; 1154 *(maddr+SIPLIRQCLR) = 0x00; 1155 *(maddr+SIPLIRQCLR) = 0x10; 1156 break; 1157 case SIPCI: 1158 maddr = sc->sc_maddr; 1159 ((volatile struct si_reg *)maddr)->int_pending = 0; 1160 *(maddr+SIPCIINTCL) = 0x0; 1161 break; 1162 case SIJETPCI: /* fall through to JETISA case */ 1163 case SIJETISA: 1164 maddr = sc->sc_maddr; 1165 ((volatile struct si_reg *)maddr)->int_pending = 0; 1166 *(maddr+SIJETINTCL) = 0x0; 1167 break; 1168 #ifdef DEV_EISA 1169 case SIEISA: 1170 maddr = sc->sc_maddr; 1171 ((volatile struct si_reg *)maddr)->int_pending = 0; 1172 (void)inb(sc->sc_iobase + 3); 1173 break; 1174 #endif 1175 case SIEMPTY: 1176 default: 1177 continue; 1178 } 1179 ((volatile struct si_reg *)maddr)->int_scounter = 0; 1180 1181 /* 1182 * check each port 1183 */ 1184 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport; 1185 pp++, port++) { 1186 ccbp = pp->sp_ccb; 1187 tp = pp->sp_tty; 1188 tty_lock(tp); 1189 1190 /* 1191 * See if a command has completed ? 1192 */ 1193 if (ccbp->hi_stat != pp->sp_pend) { 1194 DPRINT((pp, DBG_INTR, 1195 "si_intr hi_stat = %s, pend = %s\n", 1196 si_cmdname(ccbp->hi_stat), 1197 si_cmdname(pp->sp_pend))); 1198 switch(pp->sp_pend) { 1199 case LOPEN: 1200 case MPEND: 1201 case MOPEN: 1202 case FCLOSE: 1203 case CONFIG: 1204 case SBREAK: 1205 case EBREAK: 1206 /* sleeping in si_command */ 1207 DPRINT((pp, DBG_INTR, "do wakeup\n")); 1208 wakeup(&pp->sp_state); 1209 break; 1210 } 1211 pp->sp_pend = ccbp->hi_stat; 1212 } 1213 1214 /* 1215 * Continue on if it's closed 1216 */ 1217 if (ccbp->hi_stat == IDLE_CLOSE) { 1218 tty_unlock(tp); 1219 continue; 1220 } 1221 1222 /* 1223 * Do modem state change if not a local device 1224 */ 1225 si_modem_state(pp, tp, ccbp->hi_ip); 1226 1227 /* 1228 * Check to see if we should 'receive' characters. 1229 */ 1230 isopen = tty_opened(tp); 1231 1232 /* 1233 * Do input break processing 1234 */ 1235 if (ccbp->hi_state & ST_BREAK) { 1236 if (isopen) 1237 ttydisc_rint(tp, 0, TRE_BREAK); 1238 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */ 1239 DPRINT((pp, DBG_INTR, "si_intr break\n")); 1240 } 1241 1242 /* 1243 * Do RX stuff - if not open then dump any characters. 1244 * XXX: This is VERY messy and needs to be cleaned up. 1245 * 1246 * XXX: can we leave data in the host adapter buffer 1247 * when the clists are full? That may be dangerous 1248 * if the user cannot get an interrupt signal through. 1249 */ 1250 1251 more_rx: 1252 1253 if (!isopen) { 1254 DPRINT((pp, DBG_INTR, "intr1: not open\n")); 1255 ccbp->hi_rxopos = ccbp->hi_rxipos; 1256 goto end_rx; 1257 } 1258 1259 #if 0 /* XXXMPSAFETTY */ 1260 /* 1261 * If the tty input buffers are blocked, stop emptying 1262 * the incoming buffers and let the auto flow control 1263 * assert.. 1264 */ 1265 if (tp->t_state & TS_TBLOCK) 1266 goto end_rx; 1267 #endif 1268 1269 /* 1270 * Process read characters if not skipped above 1271 */ 1272 op = ccbp->hi_rxopos; 1273 ip = ccbp->hi_rxipos; 1274 c = ip - op; 1275 if (c == 0) 1276 goto end_rx; 1277 1278 n = c & 0xff; 1279 if (n > 250) 1280 n = 250; 1281 1282 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1283 n, op, ip)); 1284 1285 /* 1286 * Suck characters out of host card buffer into the 1287 * "input staging buffer" - so that we dont leave the 1288 * host card in limbo while we're possibly echoing 1289 * characters and possibly flushing input inside the 1290 * ldisc l_rint() routine. 1291 */ 1292 if (n <= SI_BUFFERSIZE - op) { 1293 1294 z = ccbp->hi_rxbuf + op; 1295 si_vbcopy(z, si_rxbuf, n); 1296 1297 op += n; 1298 } else { 1299 x = SI_BUFFERSIZE - op; 1300 1301 z = ccbp->hi_rxbuf + op; 1302 si_vbcopy(z, si_rxbuf, x); 1303 1304 z = ccbp->hi_rxbuf; 1305 si_vbcopy(z, si_rxbuf + x, n - x); 1306 1307 op += n; 1308 } 1309 1310 /* clear collected characters from buffer */ 1311 ccbp->hi_rxopos = op; 1312 1313 /* 1314 * at this point... 1315 * n = number of chars placed in si_rxbuf 1316 */ 1317 1318 if (0 && ttydisc_can_bypass(tp)) { 1319 1320 i = ttydisc_rint_bypass(tp, (char *)si_rxbuf, n); 1321 if (i < n) 1322 pp->sp_delta_overflows += (n - i); 1323 1324 } else { 1325 /* 1326 * It'd be nice to not have to go through the 1327 * function call overhead for each char here. 1328 * It'd be nice to block input it, saving a 1329 * loop here and the call/return overhead. 1330 */ 1331 for(x = 0; x < n; x++) { 1332 i = si_rxbuf[x]; 1333 if (ttydisc_rint(tp, i, 0) == -1) 1334 pp->sp_delta_overflows++; 1335 } 1336 } 1337 goto more_rx; /* try for more until RXbuf is empty */ 1338 1339 end_rx: 1340 1341 ttydisc_rint_done(tp); 1342 1343 /* 1344 * Do TX stuff 1345 */ 1346 si_start(tp); 1347 tty_unlock(tp); 1348 1349 } /* end of for (all ports on this controller) */ 1350 } /* end of for (all controllers) */ 1351 1352 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n")); 1353 } 1354 1355 /* 1356 * Nudge the transmitter... 1357 * 1358 * XXX: I inherited some funny code here. It implies the host card only 1359 * interrupts when the transmit buffer reaches the low-water-mark, and does 1360 * not interrupt when it's actually hits empty. In some cases, we have 1361 * processes waiting for complete drain, and we need to simulate an interrupt 1362 * about when we think the buffer is going to be empty (and retry if not). 1363 * I really am not certain about this... I *need* the hardware manuals. 1364 */ 1365 static void 1366 si_start(struct tty *tp) 1367 { 1368 struct si_port *pp; 1369 volatile struct si_channel *ccbp; 1370 BYTE ipos, count; 1371 #if 0 1372 int nchar; 1373 #endif 1374 int oldspl, n, amount; 1375 1376 oldspl = spltty(); 1377 mtx_assert(&Giant, MA_OWNED); 1378 1379 pp = tty_softc(tp); 1380 1381 DPRINT((pp, DBG_ENTRY|DBG_START, 1382 "si_start(%x) sp_state %x\n", 1383 tp, pp->sp_state)); 1384 1385 ccbp = pp->sp_ccb; 1386 1387 while ((count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos) < 255) { 1388 DPRINT((pp, DBG_START, "txbuf pend count %d\n", (BYTE)count)); 1389 ipos = (unsigned int)ccbp->hi_txipos; 1390 if ((int)ccbp->hi_txopos <= ipos) 1391 amount = SI_BUFFERSIZE - ipos; 1392 else 1393 amount = 255 - count; 1394 DPRINT((pp, DBG_START, "spaceleft amount %d\n", amount)); 1395 if (amount == 0) 1396 break; 1397 n = ttydisc_getc(tp, si_txbuf, amount); 1398 DPRINT((pp, DBG_START, "getc n=%d\n", n)); 1399 if (n == 0) 1400 break; 1401 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n); 1402 ccbp->hi_txipos += n; 1403 } 1404 1405 #if 0 1406 /* 1407 * See if there are any characters still to come. If so, we can 1408 * depend on si_start being called again. 1409 * 1410 * XXX the manual is vague on this. It implies we get an interrupt 1411 * when the transmit queue reaches the 25% low water mark, but NOT 1412 * when it hits empty. 1413 */ 1414 nchar = ttyoutq_getsize(&tp->t_outq) - ttyoutq_bytesleft(&tp->t_outq); 1415 DPRINT((pp, DBG_START, "count %d, nchar %d\n", 1416 (BYTE)count, nchar)); 1417 1418 if (count != 0 && nchar == 0) { 1419 int time; 1420 1421 /* XXX lame. Ticks per character. used to be a table. */ 1422 time = (tp->t_termios.c_ospeed + 9) / 10; 1423 1424 if (time > 0) { 1425 if (time < nchar) 1426 time = nchar / time; 1427 else 1428 time = 2; 1429 } else { 1430 DPRINT((pp, DBG_START, 1431 "bad char time value! %d\n", time)); 1432 time = hz/10; 1433 } 1434 1435 if ((pp->sp_state & SS_LSTART) != 0) 1436 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 1437 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time)); 1438 pp->sp_state |= SS_LSTART; 1439 pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time); 1440 } 1441 #endif 1442 1443 splx(oldspl); 1444 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n")); 1445 } 1446 1447 #if 0 1448 /* 1449 * Note: called at splsoftclock from the timeout code 1450 * This has to deal with two things... cause wakeups while waiting for 1451 * tty drains on last process exit, and call l_start at about the right 1452 * time for protocols like ppp. 1453 */ 1454 static void 1455 si_lstart(void *arg) 1456 { 1457 struct si_port *pp = arg; 1458 struct tty *tp; 1459 int oldspl; 1460 1461 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n", 1462 pp, pp->sp_state)); 1463 1464 oldspl = spltty(); 1465 mtx_assert(&Giant, MA_OWNED); 1466 pp->sp_state &= ~SS_LSTART; 1467 tp = pp->sp_tty; 1468 1469 si_start(tp); 1470 1471 splx(oldspl); 1472 } 1473 #endif 1474 1475 #if 0 /* XXX mpsafetty */ 1476 /* 1477 * Stop output on a line. called at spltty(); 1478 */ 1479 static void 1480 si_stop(struct tty *tp, int rw) 1481 { 1482 volatile struct si_channel *ccbp; 1483 struct si_port *pp; 1484 1485 mtx_assert(&Giant, MA_OWNED); 1486 pp = tty_softc(tp); 1487 ccbp = pp->sp_ccb; 1488 1489 DPRINT((pp, DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw)); 1490 1491 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */ 1492 if (rw & FWRITE) { 1493 /* what level are we meant to be flushing anyway? */ 1494 if (tp->t_state & TS_BUSY) { 1495 si_command(pp, WFLUSH, SI_NOWAIT); 1496 tp->t_state &= ~TS_BUSY; 1497 ttwwakeup(tp); /* Bruce???? */ 1498 } 1499 } 1500 #if 1 /* XXX: this doesn't work right yet.. */ 1501 /* XXX: this may have been failing because we used to call l_rint() 1502 * while we were looping based on these two counters. Now, we collect 1503 * the data and then loop stuffing it into l_rint(), making this 1504 * useless. Should we cause this to blow away the staging buffer? 1505 */ 1506 if (rw & FREAD) { 1507 ccbp->hi_rxopos = ccbp->hi_rxipos; 1508 } 1509 #endif 1510 } 1511 #endif 1512 1513 /* 1514 * Issue a command to the host card CPU. 1515 * 1516 * XXX This is all just so WRONG!. Ed says we're not supposed to sleep 1517 * here anyway. We sort of get away with it for now by using Giant. 1518 * Something better will have to be done. 1519 * Linux does a busy spin here waiting for the 8-bit cpu to notice the 1520 * posted command and respond to it. I'm not sure I like that either. 1521 */ 1522 static void 1523 si_command(struct si_port *pp, int cmd, int waitflag) 1524 { 1525 int oldspl; 1526 volatile struct si_channel *ccbp = pp->sp_ccb; 1527 int x; 1528 int err; 1529 1530 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%s,%d): hi_stat %s, sp_pend: %s\n", 1531 pp, si_cmdname(cmd), waitflag, si_cmdname(ccbp->hi_stat), 1532 si_cmdname(pp->sp_pend))); 1533 1534 oldspl = spltty(); /* Keep others out */ 1535 mtx_assert(&Giant, MA_OWNED); 1536 1537 /* wait until it's finished what it was doing.. */ 1538 /* XXX: sits in IDLE_BREAK until something disturbs it or break 1539 * is turned off. */ 1540 while((x = ccbp->hi_stat) != IDLE_OPEN && 1541 x != IDLE_CLOSE && 1542 x != IDLE_BREAK && 1543 x != cmd) { 1544 DPRINT((pp, DBG_PARAM, "sicmd1 old cmd pending (going to tsleep): hi_stat (%s)\n", si_cmdname(ccbp->hi_stat))); 1545 err = tsleep(&pp->sp_state, (PSOCK+1)|PCATCH, "sicmd1", hz/4); 1546 if (err) { 1547 DPRINT((pp, DBG_PARAM, "sicmd1 timeout: hi_stat (%s)\n", 1548 si_cmdname(ccbp->hi_stat))); 1549 /* This is very very bad. The card has crashed. */ 1550 /* XXX the driver breaks at this point */ 1551 if (err == ETIMEDOUT) 1552 DPRINT(("%s: tsleep1 timeout. hi_stat %s, sp_pend %s\n", pp->sp_name, si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1553 splx(oldspl); 1554 return; 1555 } 1556 } 1557 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */ 1558 DPRINT((pp, DBG_PARAM, "sicmd1 now in: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1559 1560 /* if there was a pending command, cause a state-change wakeup */ 1561 switch(pp->sp_pend) { 1562 case LOPEN: 1563 case MPEND: 1564 case MOPEN: 1565 case FCLOSE: 1566 case CONFIG: 1567 case SBREAK: 1568 case EBREAK: 1569 DPRINT((pp, DBG_PARAM, "si_command: sp_pend %s, doing wakeup\n", si_cmdname(pp->sp_pend))); 1570 wakeup(&pp->sp_state); 1571 break; 1572 default: 1573 break; 1574 } 1575 1576 pp->sp_pend = cmd; /* New command pending */ 1577 ccbp->hi_stat = cmd; /* Post it */ 1578 DPRINT((pp, DBG_PARAM, "sicmd now posted: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1579 1580 if (waitflag) { 1581 while((x = ccbp->hi_stat) != IDLE_OPEN && 1582 x != IDLE_CLOSE && 1583 x != IDLE_BREAK) { 1584 DPRINT((pp, DBG_PARAM, "sicmd2 now waiting: hi_stat (%s) sp_pend (%s) (going to tsleep)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1585 err = tsleep(&pp->sp_state, (PSOCK+1)|PCATCH, "sicmd2", hz); 1586 if (err) { 1587 DPRINT((pp, DBG_PARAM, "sicmd2 tsleep error: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1588 if (err == ETIMEDOUT) { 1589 DPRINT(("%s: tsleep2 timeout. hi_stat %s, sp_pend %s\n", pp->sp_name, si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1590 } 1591 break; 1592 } 1593 } 1594 } 1595 DPRINT((pp, DBG_PARAM, "sicmd2 finished: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1596 splx(oldspl); 1597 } 1598 1599 1600 #ifdef SI_DEBUG 1601 1602 void 1603 si_dprintf(struct si_port *pp, int flags, const char *fmt, ...) 1604 { 1605 va_list ap; 1606 1607 if ((pp == NULL && (si_debug&flags)) || 1608 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) { 1609 if (pp != NULL) 1610 printf("%s: ", pp->sp_name); 1611 va_start(ap, fmt); 1612 vprintf(fmt, ap); 1613 va_end(ap); 1614 } 1615 } 1616 1617 #endif /* DEBUG */ 1618 1619 static char * 1620 si_modulename(int host_type, int uart_type) 1621 { 1622 switch (host_type) { 1623 /* Z280 based cards */ 1624 #ifdef DEV_EISA 1625 case SIEISA: 1626 #endif 1627 case SIHOST2: 1628 case SIHOST: 1629 case SIPCI: 1630 switch (uart_type) { 1631 case 0: 1632 return(" (XIO)"); 1633 case 1: 1634 return(" (SI)"); 1635 } 1636 break; 1637 /* T225 based hosts */ 1638 case SIJETPCI: 1639 case SIJETISA: 1640 switch (uart_type) { 1641 case 0: 1642 return(" (SI)"); 1643 case 40: 1644 return(" (XIO)"); 1645 case 72: 1646 return(" (SXDC)"); 1647 } 1648 break; 1649 } 1650 return(""); 1651 }
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