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("$FreeBSD$"); 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 device_printf(dev, 609 "WARNING: This driver is deprecated and will be removed.\n"); 610 return (0); 611 } 612 613 static int 614 siopen(struct tty *tp) 615 { 616 617 DPRINT((0, DBG_ENTRY|DBG_OPEN, "siopen()\n")); 618 mtx_assert(&Giant, MA_OWNED); 619 #ifdef POLL 620 /* 621 * We've now got a device, so start the poller. 622 */ 623 if (init_finished == 0) { 624 timeout(si_poll, (caddr_t)0L, si_pollrate); 625 init_finished = 1; 626 } 627 #endif 628 DPRINT((0, DBG_EXIT|DBG_OPEN, "siopen() finished\n")); 629 return(0); 630 } 631 632 static void 633 siclose(struct tty *tp) 634 { 635 struct si_port *pp; 636 637 DPRINT((0, DBG_ENTRY|DBG_CLOSE, "siclose()\n")); 638 mtx_assert(&Giant, MA_OWNED); 639 pp = tty_softc(tp); 640 (void) si_command(pp, FCLOSE, SI_WAIT); 641 DPRINT((0, DBG_EXIT|DBG_CLOSE, "siclose() finished\n")); 642 } 643 644 static int 645 siioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td) 646 { 647 struct si_port *pp; 648 649 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "siioctl(0x%lx,0x%x)\n", cmd, data)); 650 mtx_assert(&Giant, MA_OWNED); 651 pp = tty_softc(tp); 652 switch (cmd) { 653 case TIOCSBRK: 654 si_command(pp, SBREAK, SI_WAIT); 655 return (0); 656 case TIOCCBRK: 657 si_command(pp, EBREAK, SI_WAIT); 658 return (0); 659 } 660 return (ENOIOCTL); /* Let the common tty ioctl handler do it */ 661 } 662 663 /* 664 * Handle the Specialix ioctls on the control dev. 665 */ 666 static int 667 si_Sioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 668 { 669 struct si_softc *xsc; 670 struct si_port *xpp; 671 volatile struct si_reg *regp; 672 struct si_tcsi *dp; 673 struct si_pstat *sps; 674 int *ip, error = 0; 675 int oldspl; 676 int card, port; 677 678 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,0x%lx,0x%x)\n", 679 devtoname(dev), cmd, data)); 680 mtx_assert(&Giant, MA_OWNED); 681 682 #if 1 683 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT)); 684 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB)); 685 #endif 686 687 oldspl = spltty(); /* better safe than sorry */ 688 689 ip = (int *)data; 690 691 #define SUCHECK if ((error = priv_check(td, PRIV_DRIVER))) goto out 692 693 switch (cmd) { 694 case TCSIPORTS: 695 *ip = si_Nports; 696 goto out; 697 case TCSIMODULES: 698 *ip = si_Nmodules; 699 goto out; 700 case TCSISDBG_ALL: 701 SUCHECK; 702 si_debug = *ip; 703 goto out; 704 case TCSIGDBG_ALL: 705 *ip = si_debug; 706 goto out; 707 default: 708 /* 709 * Check that a controller for this port exists 710 */ 711 712 /* may also be a struct si_pstat, a superset of si_tcsi */ 713 714 dp = (struct si_tcsi *)data; 715 sps = (struct si_pstat *)data; 716 card = dp->tc_card; 717 xsc = devclass_get_softc(si_devclass, card); /* check.. */ 718 if (xsc == NULL || xsc->sc_type == SIEMPTY) { 719 error = ENOENT; 720 goto out; 721 } 722 /* 723 * And check that a port exists 724 */ 725 port = dp->tc_port; 726 if (port < 0 || port >= xsc->sc_nport) { 727 error = ENOENT; 728 goto out; 729 } 730 xpp = xsc->sc_ports + port; 731 regp = (struct si_reg *)xsc->sc_maddr; 732 } 733 734 switch (cmd) { 735 case TCSIDEBUG: 736 #ifdef SI_DEBUG 737 SUCHECK; 738 if (xpp->sp_debug) 739 xpp->sp_debug = 0; 740 else { 741 xpp->sp_debug = DBG_ALL; 742 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n", 743 (xpp->sp_debug&DBG_ALL)?"ON":"OFF")); 744 } 745 break; 746 #else 747 error = ENODEV; 748 goto out; 749 #endif 750 case TCSISDBG_LEVEL: 751 case TCSIGDBG_LEVEL: 752 #ifdef SI_DEBUG 753 if (cmd == TCSIGDBG_LEVEL) { 754 dp->tc_dbglvl = xpp->sp_debug; 755 } else { 756 SUCHECK; 757 xpp->sp_debug = dp->tc_dbglvl; 758 } 759 break; 760 #else 761 error = ENODEV; 762 goto out; 763 #endif 764 case TCSIGRXIT: 765 dp->tc_int = regp->rx_int_count; 766 break; 767 case TCSIRXIT: 768 SUCHECK; 769 regp->rx_int_count = dp->tc_int; 770 break; 771 case TCSIGIT: 772 dp->tc_int = regp->int_count; 773 break; 774 case TCSIIT: 775 SUCHECK; 776 regp->int_count = dp->tc_int; 777 break; 778 case TCSISTATE: 779 dp->tc_int = xpp->sp_ccb->hi_ip; 780 break; 781 /* these next three use a different structure */ 782 case TCSI_PORT: 783 SUCHECK; 784 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport)); 785 break; 786 case TCSI_CCB: 787 SUCHECK; 788 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb)); 789 break; 790 default: 791 error = EINVAL; 792 goto out; 793 } 794 out: 795 splx(oldspl); 796 return(error); /* success */ 797 } 798 799 /* 800 * siparam() : Configure line params 801 * called at spltty(); 802 * this may sleep, does not flush, nor wait for drain, nor block writes 803 * caller must arrange this if it's important.. 804 */ 805 static int 806 siparam(struct tty *tp, struct termios *t) 807 { 808 struct si_port *pp = tty_softc(tp); 809 volatile struct si_channel *ccbp; 810 int oldspl, cflag, iflag, oflag, lflag; 811 int error = 0; /* shutup gcc */ 812 int ispeed = 0; /* shutup gcc */ 813 int ospeed = 0; /* shutup gcc */ 814 BYTE val; 815 816 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t)); 817 mtx_assert(&Giant, MA_OWNED); 818 cflag = t->c_cflag; 819 iflag = t->c_iflag; 820 oflag = t->c_oflag; 821 lflag = t->c_lflag; 822 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n", 823 oflag, cflag, iflag, lflag)); 824 825 /* XXX - if Jet host and SXDC module, use extended baud rates */ 826 827 /* if not hung up.. */ 828 if (t->c_ospeed != 0) { 829 /* translate baud rate to firmware values */ 830 ospeed = si_speedtab(t->c_ospeed, bdrates); 831 ispeed = t->c_ispeed ? 832 si_speedtab(t->c_ispeed, bdrates) : ospeed; 833 /* enforce legit baud rate */ 834 if (ospeed < 0 || ispeed < 0) 835 return (EINVAL); 836 } 837 838 oldspl = spltty(); 839 840 ccbp = pp->sp_ccb; 841 842 /* ========== set hi_break ========== */ 843 val = 0; 844 if (iflag & IGNBRK) /* Breaks */ 845 val |= BR_IGN; 846 if (iflag & BRKINT) /* Interrupt on break? */ 847 val |= BR_INT; 848 if (iflag & PARMRK) /* Parity mark? */ 849 val |= BR_PARMRK; 850 if (iflag & IGNPAR) /* Ignore chars with parity errors? */ 851 val |= BR_PARIGN; 852 ccbp->hi_break = val; 853 854 /* ========== set hi_csr ========== */ 855 /* if not hung up.. */ 856 if (t->c_ospeed != 0) { 857 /* Set I/O speeds */ 858 val = (ispeed << 4) | ospeed; 859 } 860 ccbp->hi_csr = val; 861 862 /* ========== set hi_mr2 ========== */ 863 val = 0; 864 if (cflag & CSTOPB) /* Stop bits */ 865 val |= MR2_2_STOP; 866 else 867 val |= MR2_1_STOP; 868 869 /* 870 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 871 * a DCE, hence the reverse sense of RTS and CTS 872 */ 873 /* Output Flow - RTS must be raised before data can be sent */ 874 if (cflag & CCTS_OFLOW) 875 val |= MR2_RTSCONT; 876 877 ccbp->hi_mr2 = val; 878 879 /* ========== set hi_mr1 ========== */ 880 val = 0; 881 if (!(cflag & PARENB)) /* Parity */ 882 val |= MR1_NONE; 883 else 884 val |= MR1_WITH; 885 if (cflag & PARODD) 886 val |= MR1_ODD; 887 888 if ((cflag & CS8) == CS8) /* 8 data bits? */ 889 val |= MR1_8_BITS; 890 else if ((cflag & CS7) == CS7) /* 7 data bits? */ 891 val |= MR1_7_BITS; 892 else if ((cflag & CS6) == CS6) /* 6 data bits? */ 893 val |= MR1_6_BITS; 894 else /* Must be 5 */ 895 val |= MR1_5_BITS; 896 897 /* 898 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 899 * a DCE, hence the reverse sense of RTS and CTS 900 */ 901 /* Input Flow - CTS is raised when port is ready to receive data */ 902 if (cflag & CRTS_IFLOW) 903 val |= MR1_CTSCONT; 904 905 ccbp->hi_mr1 = val; 906 907 /* ========== set hi_mask ========== */ 908 val = 0xff; 909 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 910 val &= 0xFF; 911 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 912 val &= 0x7F; 913 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 914 val &= 0x3F; 915 } else { /* Must be 5 */ 916 val &= 0x1F; 917 } 918 if (iflag & ISTRIP) 919 val &= 0x7F; 920 921 ccbp->hi_mask = val; 922 923 /* ========== set hi_prtcl ========== */ 924 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */ 925 if (iflag & IXANY) 926 val |= SP_TANY; 927 if (iflag & IXON) 928 val |= SP_TXEN; 929 if (iflag & IXOFF) 930 val |= SP_RXEN; 931 if (iflag & INPCK) 932 val |= SP_PAEN; 933 934 ccbp->hi_prtcl = val; 935 936 937 /* ========== set hi_{rx|tx}{on|off} ========== */ 938 /* XXX: the card TOTALLY shields us from the flow control... */ 939 ccbp->hi_txon = t->c_cc[VSTART]; 940 ccbp->hi_txoff = t->c_cc[VSTOP]; 941 942 ccbp->hi_rxon = t->c_cc[VSTART]; 943 ccbp->hi_rxoff = t->c_cc[VSTOP]; 944 945 /* ========== send settings to the card ========== */ 946 /* potential sleep here */ 947 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */ 948 si_command(pp, LOPEN, SI_WAIT); /* open it */ 949 else 950 si_command(pp, CONFIG, SI_WAIT); /* change params */ 951 952 /* ========== set DTR etc ========== */ 953 /* Hangup if ospeed == 0 */ 954 if (t->c_ospeed == 0) { 955 (void) simodem(tp, 0, SER_DTR | SER_RTS); 956 } else { 957 /* 958 * If the previous speed was 0, may need to re-enable 959 * the modem signals 960 */ 961 (void) simodem(tp, SER_DTR | SER_RTS, 0); 962 } 963 964 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x HI_CSR %x\n", 965 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break, ccbp->hi_csr)); 966 967 splx(oldspl); 968 return(error); 969 } 970 971 /* 972 * Set/Get state of modem control lines. 973 * Due to DCE-like behaviour of the adapter, some signals need translation: 974 * TIOCM_DTR DSR 975 * TIOCM_RTS CTS 976 */ 977 static int 978 simodem(struct tty *tp, int sigon, int sigoff) 979 { 980 struct si_port *pp; 981 volatile struct si_channel *ccbp; 982 int x; 983 984 pp = tty_softc(tp); 985 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "simodem(%x,%x)\n", sigon, sigoff)); 986 mtx_assert(&Giant, MA_OWNED); 987 ccbp = pp->sp_ccb; /* Find channel address */ 988 if (sigon == 0 && sigoff == 0) { 989 x = ccbp->hi_ip; 990 /* 991 * XXX: not sure this is correct, should it be CTS&DSR ? 992 * XXX: or do we (just) miss CTS & DSR ? 993 */ 994 if (x & IP_DCD) sigon |= SER_DCD; 995 if (x & IP_DTR) sigon |= SER_DTR; 996 if (x & IP_RTS) sigon |= SER_RTS; 997 if (x & IP_RI) sigon |= SER_RI; 998 return (sigon); 999 } 1000 1001 x = ccbp->hi_op; 1002 if (sigon & SER_DTR) 1003 x |= OP_DSR; 1004 if (sigoff & SER_DTR) 1005 x &= ~OP_DSR; 1006 if (sigon & SER_RTS) 1007 x |= OP_CTS; 1008 if (sigoff & SER_RTS) 1009 x &= ~OP_CTS; 1010 ccbp->hi_op = x; 1011 return 0; 1012 } 1013 1014 /* 1015 * Handle change of modem state 1016 */ 1017 static void 1018 si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip) 1019 { 1020 /* if a modem dev */ 1021 mtx_assert(&Giant, MA_OWNED); 1022 if (hi_ip & IP_DCD) { 1023 if (!(pp->sp_last_hi_ip & IP_DCD)) { 1024 DPRINT((pp, DBG_INTR, "modem carr on%d\n")); 1025 (void)ttydisc_modem(tp, 1); 1026 } 1027 } else { 1028 if (pp->sp_last_hi_ip & IP_DCD) { 1029 DPRINT((pp, DBG_INTR, "modem carr off\n")); 1030 #if 0 /* XXX mpsafetty ttyld_modem used to tell us to shutdown the port or not */ 1031 if (ttydisc_modem(tp, 0)) 1032 (void) simodem(tp, 0, SER_DTR | SER_RTS); 1033 #else 1034 ttydisc_modem(tp, 0); 1035 #endif 1036 } 1037 } 1038 pp->sp_last_hi_ip = hi_ip; 1039 1040 } 1041 1042 /* 1043 * Poller to catch missed interrupts. 1044 * 1045 * Note that the SYSV Specialix drivers poll at 100 times per second to get 1046 * better response. We could really use a "periodic" version timeout(). :-) 1047 */ 1048 #ifdef POLL 1049 static void 1050 si_poll(void *nothing) 1051 { 1052 struct si_softc *sc; 1053 int i; 1054 volatile struct si_reg *regp; 1055 struct si_port *pp; 1056 int lost, oldspl, port; 1057 1058 DPRINT((0, DBG_POLL, "si_poll()\n")); 1059 oldspl = spltty(); 1060 mtx_assert(&Giant, MA_OWNED); 1061 lost = 0; 1062 for (i = 0; i < si_numunits; i++) { 1063 sc = devclass_get_softc(si_devclass, i); 1064 if (sc == NULL || sc->sc_type == SIEMPTY) 1065 continue; 1066 regp = (struct si_reg *)sc->sc_maddr; 1067 1068 /* 1069 * See if there has been a pending interrupt for 2 seconds 1070 * or so. The test (int_scounter >= 200) won't correspond 1071 * to 2 seconds if int_count gets changed. 1072 */ 1073 if (regp->int_pending != 0) { 1074 if (regp->int_scounter >= 200 && 1075 regp->initstat == 1) { 1076 printf("si%d: lost intr\n", i); 1077 lost++; 1078 } 1079 } else { 1080 regp->int_scounter = 0; 1081 } 1082 1083 /* 1084 * gripe about no input flow control.. 1085 */ 1086 pp = sc->sc_ports; 1087 for (port = 0; port < sc->sc_nport; pp++, port++) { 1088 if (pp->sp_delta_overflows > 0) { 1089 printf("si%d: %d tty level buffer overflows\n", 1090 i, pp->sp_delta_overflows); 1091 pp->sp_delta_overflows = 0; 1092 } 1093 } 1094 } 1095 if (lost || si_realpoll) 1096 si_intr(NULL); /* call intr with fake vector */ 1097 splx(oldspl); 1098 1099 timeout(si_poll, (caddr_t)0L, si_pollrate); 1100 } 1101 #endif /* ifdef POLL */ 1102 1103 /* 1104 * The interrupt handler polls ALL ports on ALL adapters each time 1105 * it is called. 1106 */ 1107 1108 static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */ 1109 static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */ 1110 1111 void 1112 si_intr(void *arg) 1113 { 1114 struct si_softc *sc; 1115 struct si_port *pp; 1116 volatile struct si_channel *ccbp; 1117 struct tty *tp; 1118 volatile caddr_t maddr; 1119 BYTE op, ip; 1120 int x, card, port, n, i, isopen; 1121 volatile BYTE *z; 1122 BYTE c; 1123 1124 sc = arg; 1125 mtx_assert(&Giant, MA_OWNED); 1126 1127 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n")); 1128 1129 /* 1130 * When we get an int we poll all the channels and do ALL pending 1131 * work, not just the first one we find. This allows all cards to 1132 * share the same vector. 1133 * 1134 * XXX - But if we're sharing the vector with something that's NOT 1135 * a SI/XIO/SX card, we may be making more work for ourselves. 1136 */ 1137 for (card = 0; card < si_numunits; card++) { 1138 sc = devclass_get_softc(si_devclass, card); 1139 if (sc == NULL || sc->sc_type == SIEMPTY) 1140 continue; 1141 1142 /* 1143 * First, clear the interrupt 1144 */ 1145 switch(sc->sc_type) { 1146 case SIHOST: 1147 maddr = sc->sc_maddr; 1148 ((volatile struct si_reg *)maddr)->int_pending = 0; 1149 /* flag nothing pending */ 1150 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */ 1151 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */ 1152 break; 1153 case SIHOST2: 1154 maddr = sc->sc_maddr; 1155 ((volatile struct si_reg *)maddr)->int_pending = 0; 1156 *(maddr+SIPLIRQCLR) = 0x00; 1157 *(maddr+SIPLIRQCLR) = 0x10; 1158 break; 1159 case SIPCI: 1160 maddr = sc->sc_maddr; 1161 ((volatile struct si_reg *)maddr)->int_pending = 0; 1162 *(maddr+SIPCIINTCL) = 0x0; 1163 break; 1164 case SIJETPCI: /* fall through to JETISA case */ 1165 case SIJETISA: 1166 maddr = sc->sc_maddr; 1167 ((volatile struct si_reg *)maddr)->int_pending = 0; 1168 *(maddr+SIJETINTCL) = 0x0; 1169 break; 1170 #ifdef DEV_EISA 1171 case SIEISA: 1172 maddr = sc->sc_maddr; 1173 ((volatile struct si_reg *)maddr)->int_pending = 0; 1174 (void)inb(sc->sc_iobase + 3); 1175 break; 1176 #endif 1177 case SIEMPTY: 1178 default: 1179 continue; 1180 } 1181 ((volatile struct si_reg *)maddr)->int_scounter = 0; 1182 1183 /* 1184 * check each port 1185 */ 1186 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport; 1187 pp++, port++) { 1188 ccbp = pp->sp_ccb; 1189 tp = pp->sp_tty; 1190 tty_lock(tp); 1191 1192 /* 1193 * See if a command has completed ? 1194 */ 1195 if (ccbp->hi_stat != pp->sp_pend) { 1196 DPRINT((pp, DBG_INTR, 1197 "si_intr hi_stat = %s, pend = %s\n", 1198 si_cmdname(ccbp->hi_stat), 1199 si_cmdname(pp->sp_pend))); 1200 switch(pp->sp_pend) { 1201 case LOPEN: 1202 case MPEND: 1203 case MOPEN: 1204 case FCLOSE: 1205 case CONFIG: 1206 case SBREAK: 1207 case EBREAK: 1208 /* sleeping in si_command */ 1209 DPRINT((pp, DBG_INTR, "do wakeup\n")); 1210 wakeup(&pp->sp_state); 1211 break; 1212 } 1213 pp->sp_pend = ccbp->hi_stat; 1214 } 1215 1216 /* 1217 * Continue on if it's closed 1218 */ 1219 if (ccbp->hi_stat == IDLE_CLOSE) { 1220 tty_unlock(tp); 1221 continue; 1222 } 1223 1224 /* 1225 * Do modem state change if not a local device 1226 */ 1227 si_modem_state(pp, tp, ccbp->hi_ip); 1228 1229 /* 1230 * Check to see if we should 'receive' characters. 1231 */ 1232 isopen = tty_opened(tp); 1233 1234 /* 1235 * Do input break processing 1236 */ 1237 if (ccbp->hi_state & ST_BREAK) { 1238 if (isopen) 1239 ttydisc_rint(tp, 0, TRE_BREAK); 1240 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */ 1241 DPRINT((pp, DBG_INTR, "si_intr break\n")); 1242 } 1243 1244 /* 1245 * Do RX stuff - if not open then dump any characters. 1246 * XXX: This is VERY messy and needs to be cleaned up. 1247 * 1248 * XXX: can we leave data in the host adapter buffer 1249 * when the clists are full? That may be dangerous 1250 * if the user cannot get an interrupt signal through. 1251 */ 1252 1253 more_rx: 1254 1255 if (!isopen) { 1256 DPRINT((pp, DBG_INTR, "intr1: not open\n")); 1257 ccbp->hi_rxopos = ccbp->hi_rxipos; 1258 goto end_rx; 1259 } 1260 1261 #if 0 /* XXXMPSAFETTY */ 1262 /* 1263 * If the tty input buffers are blocked, stop emptying 1264 * the incoming buffers and let the auto flow control 1265 * assert.. 1266 */ 1267 if (tp->t_state & TS_TBLOCK) 1268 goto end_rx; 1269 #endif 1270 1271 /* 1272 * Process read characters if not skipped above 1273 */ 1274 op = ccbp->hi_rxopos; 1275 ip = ccbp->hi_rxipos; 1276 c = ip - op; 1277 if (c == 0) 1278 goto end_rx; 1279 1280 n = c & 0xff; 1281 if (n > 250) 1282 n = 250; 1283 1284 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1285 n, op, ip)); 1286 1287 /* 1288 * Suck characters out of host card buffer into the 1289 * "input staging buffer" - so that we dont leave the 1290 * host card in limbo while we're possibly echoing 1291 * characters and possibly flushing input inside the 1292 * ldisc l_rint() routine. 1293 */ 1294 if (n <= SI_BUFFERSIZE - op) { 1295 1296 z = ccbp->hi_rxbuf + op; 1297 si_vbcopy(z, si_rxbuf, n); 1298 1299 op += n; 1300 } else { 1301 x = SI_BUFFERSIZE - op; 1302 1303 z = ccbp->hi_rxbuf + op; 1304 si_vbcopy(z, si_rxbuf, x); 1305 1306 z = ccbp->hi_rxbuf; 1307 si_vbcopy(z, si_rxbuf + x, n - x); 1308 1309 op += n; 1310 } 1311 1312 /* clear collected characters from buffer */ 1313 ccbp->hi_rxopos = op; 1314 1315 /* 1316 * at this point... 1317 * n = number of chars placed in si_rxbuf 1318 */ 1319 1320 if (0 && ttydisc_can_bypass(tp)) { 1321 1322 i = ttydisc_rint_bypass(tp, (char *)si_rxbuf, n); 1323 if (i < n) 1324 pp->sp_delta_overflows += (n - i); 1325 1326 } else { 1327 /* 1328 * It'd be nice to not have to go through the 1329 * function call overhead for each char here. 1330 * It'd be nice to block input it, saving a 1331 * loop here and the call/return overhead. 1332 */ 1333 for(x = 0; x < n; x++) { 1334 i = si_rxbuf[x]; 1335 if (ttydisc_rint(tp, i, 0) == -1) 1336 pp->sp_delta_overflows++; 1337 } 1338 } 1339 goto more_rx; /* try for more until RXbuf is empty */ 1340 1341 end_rx: 1342 1343 ttydisc_rint_done(tp); 1344 1345 /* 1346 * Do TX stuff 1347 */ 1348 si_start(tp); 1349 tty_unlock(tp); 1350 1351 } /* end of for (all ports on this controller) */ 1352 } /* end of for (all controllers) */ 1353 1354 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n")); 1355 } 1356 1357 /* 1358 * Nudge the transmitter... 1359 * 1360 * XXX: I inherited some funny code here. It implies the host card only 1361 * interrupts when the transmit buffer reaches the low-water-mark, and does 1362 * not interrupt when it's actually hits empty. In some cases, we have 1363 * processes waiting for complete drain, and we need to simulate an interrupt 1364 * about when we think the buffer is going to be empty (and retry if not). 1365 * I really am not certain about this... I *need* the hardware manuals. 1366 */ 1367 static void 1368 si_start(struct tty *tp) 1369 { 1370 struct si_port *pp; 1371 volatile struct si_channel *ccbp; 1372 BYTE ipos, count; 1373 #if 0 1374 int nchar; 1375 #endif 1376 int oldspl, n, amount; 1377 1378 oldspl = spltty(); 1379 mtx_assert(&Giant, MA_OWNED); 1380 1381 pp = tty_softc(tp); 1382 1383 DPRINT((pp, DBG_ENTRY|DBG_START, 1384 "si_start(%x) sp_state %x\n", 1385 tp, pp->sp_state)); 1386 1387 ccbp = pp->sp_ccb; 1388 1389 while ((count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos) < 255) { 1390 DPRINT((pp, DBG_START, "txbuf pend count %d\n", (BYTE)count)); 1391 ipos = (unsigned int)ccbp->hi_txipos; 1392 if ((int)ccbp->hi_txopos <= ipos) 1393 amount = SI_BUFFERSIZE - ipos; 1394 else 1395 amount = 255 - count; 1396 DPRINT((pp, DBG_START, "spaceleft amount %d\n", amount)); 1397 if (amount == 0) 1398 break; 1399 n = ttydisc_getc(tp, si_txbuf, amount); 1400 DPRINT((pp, DBG_START, "getc n=%d\n", n)); 1401 if (n == 0) 1402 break; 1403 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n); 1404 ccbp->hi_txipos += n; 1405 } 1406 1407 #if 0 1408 /* 1409 * See if there are any characters still to come. If so, we can 1410 * depend on si_start being called again. 1411 * 1412 * XXX the manual is vague on this. It implies we get an interrupt 1413 * when the transmit queue reaches the 25% low water mark, but NOT 1414 * when it hits empty. 1415 */ 1416 nchar = ttyoutq_getsize(&tp->t_outq) - ttyoutq_bytesleft(&tp->t_outq); 1417 DPRINT((pp, DBG_START, "count %d, nchar %d\n", 1418 (BYTE)count, nchar)); 1419 1420 if (count != 0 && nchar == 0) { 1421 int time; 1422 1423 /* XXX lame. Ticks per character. used to be a table. */ 1424 time = (tp->t_termios.c_ospeed + 9) / 10; 1425 1426 if (time > 0) { 1427 if (time < nchar) 1428 time = nchar / time; 1429 else 1430 time = 2; 1431 } else { 1432 DPRINT((pp, DBG_START, 1433 "bad char time value! %d\n", time)); 1434 time = hz/10; 1435 } 1436 1437 if ((pp->sp_state & SS_LSTART) != 0) 1438 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 1439 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time)); 1440 pp->sp_state |= SS_LSTART; 1441 pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time); 1442 } 1443 #endif 1444 1445 splx(oldspl); 1446 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n")); 1447 } 1448 1449 #if 0 1450 /* 1451 * This has to deal with two things... cause wakeups while waiting for 1452 * tty drains on last process exit, and call l_start at about the right 1453 * time for protocols like ppp. 1454 */ 1455 static void 1456 si_lstart(void *arg) 1457 { 1458 struct si_port *pp = arg; 1459 struct tty *tp; 1460 int oldspl; 1461 1462 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n", 1463 pp, pp->sp_state)); 1464 1465 oldspl = spltty(); 1466 mtx_assert(&Giant, MA_OWNED); 1467 pp->sp_state &= ~SS_LSTART; 1468 tp = pp->sp_tty; 1469 1470 si_start(tp); 1471 1472 splx(oldspl); 1473 } 1474 #endif 1475 1476 #if 0 /* XXX mpsafetty */ 1477 /* 1478 * Stop output on a line. called at spltty(); 1479 */ 1480 static void 1481 si_stop(struct tty *tp, int rw) 1482 { 1483 volatile struct si_channel *ccbp; 1484 struct si_port *pp; 1485 1486 mtx_assert(&Giant, MA_OWNED); 1487 pp = tty_softc(tp); 1488 ccbp = pp->sp_ccb; 1489 1490 DPRINT((pp, DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw)); 1491 1492 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */ 1493 if (rw & FWRITE) { 1494 /* what level are we meant to be flushing anyway? */ 1495 if (tp->t_state & TS_BUSY) { 1496 si_command(pp, WFLUSH, SI_NOWAIT); 1497 tp->t_state &= ~TS_BUSY; 1498 ttwwakeup(tp); /* Bruce???? */ 1499 } 1500 } 1501 #if 1 /* XXX: this doesn't work right yet.. */ 1502 /* XXX: this may have been failing because we used to call l_rint() 1503 * while we were looping based on these two counters. Now, we collect 1504 * the data and then loop stuffing it into l_rint(), making this 1505 * useless. Should we cause this to blow away the staging buffer? 1506 */ 1507 if (rw & FREAD) { 1508 ccbp->hi_rxopos = ccbp->hi_rxipos; 1509 } 1510 #endif 1511 } 1512 #endif 1513 1514 /* 1515 * Issue a command to the host card CPU. 1516 * 1517 * XXX This is all just so WRONG!. Ed says we're not supposed to sleep 1518 * here anyway. We sort of get away with it for now by using Giant. 1519 * Something better will have to be done. 1520 * Linux does a busy spin here waiting for the 8-bit cpu to notice the 1521 * posted command and respond to it. I'm not sure I like that either. 1522 */ 1523 static void 1524 si_command(struct si_port *pp, int cmd, int waitflag) 1525 { 1526 int oldspl; 1527 volatile struct si_channel *ccbp = pp->sp_ccb; 1528 int x; 1529 int err; 1530 1531 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%s,%d): hi_stat %s, sp_pend: %s\n", 1532 pp, si_cmdname(cmd), waitflag, si_cmdname(ccbp->hi_stat), 1533 si_cmdname(pp->sp_pend))); 1534 1535 oldspl = spltty(); /* Keep others out */ 1536 mtx_assert(&Giant, MA_OWNED); 1537 1538 /* wait until it's finished what it was doing.. */ 1539 /* XXX: sits in IDLE_BREAK until something disturbs it or break 1540 * is turned off. */ 1541 while((x = ccbp->hi_stat) != IDLE_OPEN && 1542 x != IDLE_CLOSE && 1543 x != IDLE_BREAK && 1544 x != cmd) { 1545 DPRINT((pp, DBG_PARAM, "sicmd1 old cmd pending (going to tsleep): hi_stat (%s)\n", si_cmdname(ccbp->hi_stat))); 1546 err = tsleep(&pp->sp_state, (PSOCK+1)|PCATCH, "sicmd1", hz/4); 1547 if (err) { 1548 DPRINT((pp, DBG_PARAM, "sicmd1 timeout: hi_stat (%s)\n", 1549 si_cmdname(ccbp->hi_stat))); 1550 /* This is very very bad. The card has crashed. */ 1551 /* XXX the driver breaks at this point */ 1552 if (err == ETIMEDOUT) 1553 DPRINT(("%s: tsleep1 timeout. hi_stat %s, sp_pend %s\n", pp->sp_name, si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1554 splx(oldspl); 1555 return; 1556 } 1557 } 1558 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */ 1559 DPRINT((pp, DBG_PARAM, "sicmd1 now in: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1560 1561 /* if there was a pending command, cause a state-change wakeup */ 1562 switch(pp->sp_pend) { 1563 case LOPEN: 1564 case MPEND: 1565 case MOPEN: 1566 case FCLOSE: 1567 case CONFIG: 1568 case SBREAK: 1569 case EBREAK: 1570 DPRINT((pp, DBG_PARAM, "si_command: sp_pend %s, doing wakeup\n", si_cmdname(pp->sp_pend))); 1571 wakeup(&pp->sp_state); 1572 break; 1573 default: 1574 break; 1575 } 1576 1577 pp->sp_pend = cmd; /* New command pending */ 1578 ccbp->hi_stat = cmd; /* Post it */ 1579 DPRINT((pp, DBG_PARAM, "sicmd now posted: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1580 1581 if (waitflag) { 1582 while((x = ccbp->hi_stat) != IDLE_OPEN && 1583 x != IDLE_CLOSE && 1584 x != IDLE_BREAK) { 1585 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))); 1586 err = tsleep(&pp->sp_state, (PSOCK+1)|PCATCH, "sicmd2", hz); 1587 if (err) { 1588 DPRINT((pp, DBG_PARAM, "sicmd2 tsleep error: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1589 if (err == ETIMEDOUT) { 1590 DPRINT(("%s: tsleep2 timeout. hi_stat %s, sp_pend %s\n", pp->sp_name, si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1591 } 1592 break; 1593 } 1594 } 1595 } 1596 DPRINT((pp, DBG_PARAM, "sicmd2 finished: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend))); 1597 splx(oldspl); 1598 } 1599 1600 1601 #ifdef SI_DEBUG 1602 1603 void 1604 si_dprintf(struct si_port *pp, int flags, const char *fmt, ...) 1605 { 1606 va_list ap; 1607 1608 if ((pp == NULL && (si_debug&flags)) || 1609 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) { 1610 if (pp != NULL) 1611 printf("%s: ", pp->sp_name); 1612 va_start(ap, fmt); 1613 vprintf(fmt, ap); 1614 va_end(ap); 1615 } 1616 } 1617 1618 #endif /* DEBUG */ 1619 1620 static char * 1621 si_modulename(int host_type, int uart_type) 1622 { 1623 switch (host_type) { 1624 /* Z280 based cards */ 1625 #ifdef DEV_EISA 1626 case SIEISA: 1627 #endif 1628 case SIHOST2: 1629 case SIHOST: 1630 case SIPCI: 1631 switch (uart_type) { 1632 case 0: 1633 return(" (XIO)"); 1634 case 1: 1635 return(" (SI)"); 1636 } 1637 break; 1638 /* T225 based hosts */ 1639 case SIJETPCI: 1640 case SIJETISA: 1641 switch (uart_type) { 1642 case 0: 1643 return(" (SI)"); 1644 case 40: 1645 return(" (XIO)"); 1646 case 72: 1647 return(" (SXDC)"); 1648 } 1649 break; 1650 } 1651 return(""); 1652 }
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