Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/cx/if_cx.c
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1 /*- 2 * Cronyx-Sigma adapter driver for FreeBSD. 3 * Supports PPP/HDLC and Cisco/HDLC protocol in synchronous mode, 4 * and asynchronous channels with full modem control. 5 * Keepalive protocol implemented in both Cisco and PPP modes. 6 * 7 * Copyright (C) 1994-2002 Cronyx Engineering. 8 * Author: Serge Vakulenko, <vak@cronyx.ru> 9 * 10 * Copyright (C) 1999-2004 Cronyx Engineering. 11 * Rewritten on DDK, ported to NETGRAPH, rewritten for FreeBSD 3.x-5.x by 12 * Kurakin Roman, <rik@cronyx.ru> 13 * 14 * This software is distributed with NO WARRANTIES, not even the implied 15 * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * Authors grant any other persons or organisations a permission to use, 18 * modify and redistribute this software in source and binary forms, 19 * as long as this message is kept with the software, all derivative 20 * works or modified versions. 21 * 22 * Cronyx Id: if_cx.c,v 1.1.2.34 2004/06/23 17:09:13 rik Exp $ 23 */ 24 25 #include <sys/cdefs.h> 26 __FBSDID("$FreeBSD$"); 27 28 #include <sys/param.h> 29 30 #include <sys/systm.h> 31 #include <sys/kernel.h> 32 #include <sys/module.h> 33 #include <sys/priv.h> 34 #include <sys/proc.h> 35 #include <sys/mbuf.h> 36 #include <sys/sockio.h> 37 #include <sys/malloc.h> 38 #include <sys/socket.h> 39 #include <sys/sysctl.h> 40 #include <sys/conf.h> 41 #include <sys/errno.h> 42 #include <sys/serial.h> 43 #include <sys/tty.h> 44 #include <sys/bus.h> 45 #include <machine/bus.h> 46 #include <sys/rman.h> 47 #include <isa/isavar.h> 48 #include <sys/fcntl.h> 49 #include <sys/interrupt.h> 50 #include <vm/vm.h> 51 #include <vm/pmap.h> 52 #include <net/if.h> 53 #include <net/if_var.h> 54 #include <machine/cpufunc.h> 55 #include <machine/cserial.h> 56 #include <machine/resource.h> 57 #include <dev/cx/machdep.h> 58 #include <dev/cx/cxddk.h> 59 #include <dev/cx/cronyxfw.h> 60 #include "opt_ng_cronyx.h" 61 #ifdef NETGRAPH_CRONYX 62 # include "opt_netgraph.h" 63 # include <netgraph/ng_message.h> 64 # include <netgraph/netgraph.h> 65 # include <dev/cx/ng_cx.h> 66 #else 67 # include <net/if_types.h> 68 # include <net/if_sppp.h> 69 # define PP_CISCO IFF_LINK2 70 # include <net/bpf.h> 71 #endif 72 73 #define NCX 1 74 75 /* If we don't have Cronyx's sppp version, we don't have fr support via sppp */ 76 #ifndef PP_FR 77 #define PP_FR 0 78 #endif 79 80 #define CX_DEBUG(d,s) ({if (d->chan->debug) {\ 81 printf ("%s: ", d->name); printf s;}}) 82 #define CX_DEBUG2(d,s) ({if (d->chan->debug>1) {\ 83 printf ("%s: ", d->name); printf s;}}) 84 85 #define CX_LOCK_NAME "cxX" 86 87 #define CX_LOCK(_bd) mtx_lock (&(_bd)->cx_mtx) 88 #define CX_UNLOCK(_bd) mtx_unlock (&(_bd)->cx_mtx) 89 #define CX_LOCK_ASSERT(_bd) mtx_assert (&(_bd)->cx_mtx, MA_OWNED) 90 91 typedef struct _async_q { 92 int beg; 93 int end; 94 #define BF_SZ 14400 95 int buf[BF_SZ+1]; 96 } async_q; 97 98 #define AQ_GSZ(q) ((BF_SZ + (q)->end - (q)->beg)%BF_SZ) 99 #define AQ_PUSH(q,c) {*((q)->buf + (q)->end) = c;\ 100 (q)->end = ((q)->end + 1)%BF_SZ;} 101 #define AQ_POP(q,c) {c = *((q)->buf + (q)->beg);\ 102 (q)->beg = ((q)->beg + 1)%BF_SZ;} 103 104 static void cx_identify __P((driver_t *, device_t)); 105 static int cx_probe __P((device_t)); 106 static int cx_attach __P((device_t)); 107 static int cx_detach __P((device_t)); 108 static t_open_t cx_topen; 109 static t_modem_t cx_tmodem; 110 static t_close_t cx_tclose; 111 112 static device_method_t cx_isa_methods [] = { 113 DEVMETHOD(device_identify, cx_identify), 114 DEVMETHOD(device_probe, cx_probe), 115 DEVMETHOD(device_attach, cx_attach), 116 DEVMETHOD(device_detach, cx_detach), 117 118 DEVMETHOD_END 119 }; 120 121 typedef struct _cx_dma_mem_t { 122 unsigned long phys; 123 void *virt; 124 size_t size; 125 bus_dma_tag_t dmat; 126 bus_dmamap_t mapp; 127 } cx_dma_mem_t; 128 129 typedef struct _drv_t { 130 char name [8]; 131 cx_chan_t *chan; 132 cx_board_t *board; 133 cx_dma_mem_t dmamem; 134 struct tty *tty; 135 struct callout dcd_timeout_handle; 136 unsigned callout; 137 unsigned lock; 138 int open_dev; 139 int cd; 140 int running; 141 #ifdef NETGRAPH 142 char nodename [NG_NODESIZ]; 143 hook_p hook; 144 hook_p debug_hook; 145 node_p node; 146 struct ifqueue lo_queue; 147 struct ifqueue hi_queue; 148 #else 149 struct ifqueue queue; 150 struct ifnet *ifp; 151 #endif 152 short timeout; 153 struct callout timeout_handle; 154 struct cdev *devt; 155 async_q aqueue; 156 #define CX_READ 1 157 #define CX_WRITE 2 158 int intr_action; 159 short atimeout; 160 } drv_t; 161 162 typedef struct _bdrv_t { 163 cx_board_t *board; 164 struct resource *base_res; 165 struct resource *drq_res; 166 struct resource *irq_res; 167 int base_rid; 168 int drq_rid; 169 int irq_rid; 170 void *intrhand; 171 drv_t channel [NCHAN]; 172 struct mtx cx_mtx; 173 } bdrv_t; 174 175 static driver_t cx_isa_driver = { 176 "cx", 177 cx_isa_methods, 178 sizeof (bdrv_t), 179 }; 180 181 static devclass_t cx_devclass; 182 183 extern long csigma_fw_len; 184 extern const char *csigma_fw_version; 185 extern const char *csigma_fw_date; 186 extern const char *csigma_fw_copyright; 187 extern const cr_dat_tst_t csigma_fw_tvec[]; 188 extern const u_char csigma_fw_data[]; 189 static void cx_oproc (struct tty *tp); 190 static int cx_param (struct tty *tp, struct termios *t); 191 static void cx_stop (struct tty *tp, int flag); 192 static void cx_receive (cx_chan_t *c, char *data, int len); 193 static void cx_transmit (cx_chan_t *c, void *attachment, int len); 194 static void cx_error (cx_chan_t *c, int data); 195 static void cx_modem (cx_chan_t *c); 196 static void cx_up (drv_t *d); 197 static void cx_start (drv_t *d); 198 static void cx_softintr (void *); 199 static void *cx_fast_ih; 200 static void cx_down (drv_t *d); 201 static void cx_watchdog (drv_t *d); 202 static void cx_watchdog_timer (void *arg); 203 static void cx_carrier (void *arg); 204 205 #ifdef NETGRAPH 206 extern struct ng_type typestruct; 207 #else 208 static void cx_ifstart (struct ifnet *ifp); 209 static void cx_tlf (struct sppp *sp); 210 static void cx_tls (struct sppp *sp); 211 static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data); 212 static void cx_initialize (void *softc); 213 #endif 214 215 static cx_board_t *adapter [NCX]; 216 static drv_t *channel [NCX*NCHAN]; 217 static struct callout led_timo [NCX]; 218 static struct callout timeout_handle; 219 220 static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td); 221 static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td); 222 static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td); 223 static struct cdevsw cx_cdevsw = { 224 .d_version = D_VERSION, 225 .d_open = cx_open, 226 .d_close = cx_close, 227 .d_ioctl = cx_ioctl, 228 .d_name = "cx", 229 .d_flags = D_TTY, 230 }; 231 232 static int MY_SOFT_INTR; 233 234 /* 235 * Make an mbuf from data. 236 */ 237 static struct mbuf *makembuf (void *buf, u_int len) 238 { 239 struct mbuf *m, *o, *p; 240 241 MGETHDR (m, M_NOWAIT, MT_DATA); 242 243 if (! m) 244 return 0; 245 246 if (len >= MINCLSIZE) 247 MCLGET (m, M_NOWAIT); 248 249 m->m_pkthdr.len = len; 250 m->m_len = 0; 251 252 p = m; 253 while (len) { 254 u_int n = M_TRAILINGSPACE (p); 255 if (n > len) 256 n = len; 257 if (! n) { 258 /* Allocate new mbuf. */ 259 o = p; 260 MGET (p, M_NOWAIT, MT_DATA); 261 if (! p) { 262 m_freem (m); 263 return 0; 264 } 265 if (len >= MINCLSIZE) 266 MCLGET (p, M_NOWAIT); 267 p->m_len = 0; 268 o->m_next = p; 269 270 n = M_TRAILINGSPACE (p); 271 if (n > len) 272 n = len; 273 } 274 bcopy (buf, mtod (p, caddr_t) + p->m_len, n); 275 276 p->m_len += n; 277 buf = n + (char*) buf; 278 len -= n; 279 } 280 return m; 281 } 282 283 /* 284 * Recover after lost transmit interrupts. 285 */ 286 static void cx_timeout (void *arg) 287 { 288 drv_t *d; 289 int s, i, k; 290 291 for (i = 0; i < NCX; i++) { 292 if (adapter[i] == NULL) 293 continue; 294 for (k = 0; k < NCHAN; ++k) { 295 d = channel[i * NCHAN + k]; 296 if (! d) 297 continue; 298 s = splhigh (); 299 CX_LOCK ((bdrv_t *)d->board->sys); 300 if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) { 301 d->tty->t_state &= ~TS_BUSY; 302 if (d->tty->t_dev) { 303 d->intr_action |= CX_WRITE; 304 MY_SOFT_INTR = 1; 305 swi_sched (cx_fast_ih, 0); 306 } 307 CX_DEBUG (d, ("cx_timeout\n")); 308 } 309 if (d->atimeout) 310 d->atimeout--; 311 CX_UNLOCK ((bdrv_t *)d->board->sys); 312 splx (s); 313 } 314 } 315 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 316 } 317 318 static void cx_led_off (void *arg) 319 { 320 cx_board_t *b = arg; 321 bdrv_t *bd = b->sys; 322 int s; 323 324 s = splhigh (); 325 CX_LOCK (bd); 326 cx_led (b, 0); 327 CX_UNLOCK (bd); 328 splx (s); 329 } 330 331 /* 332 * Activate interrupt handler from DDK. 333 */ 334 static void cx_intr (void *arg) 335 { 336 bdrv_t *bd = arg; 337 cx_board_t *b = bd->board; 338 #ifndef NETGRAPH 339 int i; 340 #endif 341 int s = splhigh (); 342 343 CX_LOCK (bd); 344 /* Turn LED on. */ 345 cx_led (b, 1); 346 347 cx_int_handler (b); 348 349 /* Turn LED off 50 msec later. */ 350 callout_reset (&led_timo[b->num], hz/20, cx_led_off, b); 351 CX_UNLOCK (bd); 352 splx (s); 353 354 #ifndef NETGRAPH 355 /* Pass packets in a lock-free state */ 356 for (i = 0; i < NCHAN && b->chan[i].type; i++) { 357 drv_t *d = b->chan[i].sys; 358 struct mbuf *m; 359 if (!d || !d->running) 360 continue; 361 while (_IF_QLEN(&d->queue)) { 362 IF_DEQUEUE (&d->queue,m); 363 if (!m) 364 continue; 365 sppp_input (d->ifp, m); 366 } 367 } 368 #endif 369 } 370 371 static int probe_irq (cx_board_t *b, int irq) 372 { 373 int mask, busy, cnt; 374 375 /* Clear pending irq, if any. */ 376 cx_probe_irq (b, -irq); 377 DELAY (100); 378 for (cnt=0; cnt<5; ++cnt) { 379 /* Get the mask of pending irqs, assuming they are busy. 380 * Activate the adapter on given irq. */ 381 busy = cx_probe_irq (b, irq); 382 DELAY (100); 383 384 /* Get the mask of active irqs. 385 * Deactivate our irq. */ 386 mask = cx_probe_irq (b, -irq); 387 DELAY (100); 388 if ((mask & ~busy) == 1 << irq) { 389 cx_probe_irq (b, 0); 390 /* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n", 391 b->num, irq, mask, busy); */ 392 return 1; 393 } 394 } 395 /* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n", 396 b->num, irq, mask, busy); */ 397 cx_probe_irq (b, 0); 398 return 0; 399 } 400 401 static short porttab [] = { 402 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 403 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 404 }; 405 static char dmatab [] = { 7, 6, 5, 0 }; 406 static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 }; 407 408 static int cx_is_free_res (device_t dev, int rid, int type, rman_res_t start, 409 rman_res_t end, rman_res_t count) 410 { 411 struct resource *res; 412 413 if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count, 0))) 414 return 0; 415 416 bus_release_resource (dev, type, rid, res); 417 418 return 1; 419 } 420 421 static void cx_identify (driver_t *driver, device_t dev) 422 { 423 rman_res_t iobase, rescount; 424 int devcount; 425 device_t *devices; 426 device_t child; 427 devclass_t my_devclass; 428 int i, k; 429 430 if ((my_devclass = devclass_find ("cx")) == NULL) 431 return; 432 433 devclass_get_devices (my_devclass, &devices, &devcount); 434 435 if (devcount == 0) { 436 /* We should find all devices by our self. We could alter other 437 * devices, but we don't have a choise 438 */ 439 for (i = 0; (iobase = porttab [i]) != 0; i++) { 440 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 441 iobase, iobase + NPORT, NPORT)) 442 continue; 443 if (cx_probe_board (iobase, -1, -1) == 0) 444 continue; 445 446 devcount++; 447 448 child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx", 449 -1); 450 451 if (child == NULL) 452 return; 453 454 device_set_desc_copy (child, "Cronyx Sigma"); 455 device_set_driver (child, driver); 456 bus_set_resource (child, SYS_RES_IOPORT, 0, 457 iobase, NPORT); 458 459 if (devcount >= NCX) 460 break; 461 } 462 } else { 463 static short porttab [] = { 464 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 465 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 466 }; 467 /* Lets check user choise. 468 */ 469 for (k = 0; k < devcount; k++) { 470 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 471 &iobase, &rescount) != 0) 472 continue; 473 474 for (i = 0; porttab [i] != 0; i++) { 475 if (porttab [i] != iobase) 476 continue; 477 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 478 iobase, iobase + NPORT, NPORT)) 479 continue; 480 if (cx_probe_board (iobase, -1, -1) == 0) 481 continue; 482 porttab [i] = -1; 483 device_set_desc_copy (devices[k], "Cronyx Sigma"); 484 break; 485 } 486 487 if (porttab [i] == 0) { 488 device_delete_child ( 489 device_get_parent (devices[k]), 490 devices [k]); 491 devices[k] = 0; 492 continue; 493 } 494 } 495 for (k = 0; k < devcount; k++) { 496 if (devices[k] == 0) 497 continue; 498 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 499 &iobase, &rescount) == 0) 500 continue; 501 for (i = 0; (iobase = porttab [i]) != 0; i++) { 502 if (porttab [i] == -1) { 503 continue; 504 } 505 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 506 iobase, iobase + NPORT, NPORT)) 507 continue; 508 if (cx_probe_board (iobase, -1, -1) == 0) 509 continue; 510 511 bus_set_resource (devices[k], SYS_RES_IOPORT, 0, 512 iobase, NPORT); 513 porttab [i] = -1; 514 device_set_desc_copy (devices[k], "Cronyx Sigma"); 515 break; 516 } 517 if (porttab [i] == 0) { 518 device_delete_child ( 519 device_get_parent (devices[k]), 520 devices [k]); 521 } 522 } 523 free (devices, M_TEMP); 524 } 525 526 return; 527 } 528 529 static int cx_probe (device_t dev) 530 { 531 int unit = device_get_unit (dev); 532 int i; 533 rman_res_t iobase, rescount; 534 535 if (!device_get_desc (dev) || 536 strcmp (device_get_desc (dev), "Cronyx Sigma")) 537 return ENXIO; 538 539 if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) { 540 printf ("cx%d: Couldn't get IOPORT\n", unit); 541 return ENXIO; 542 } 543 544 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 545 iobase, iobase + NPORT, NPORT)) { 546 printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase); 547 return ENXIO; 548 } 549 550 for (i = 0; porttab [i] != 0; i++) { 551 if (porttab [i] == iobase) { 552 porttab [i] = -1; 553 break; 554 } 555 } 556 557 if (porttab [i] == 0) { 558 return ENXIO; 559 } 560 561 if (!cx_probe_board (iobase, -1, -1)) { 562 printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase); 563 return ENXIO; 564 } 565 566 return 0; 567 } 568 569 static void 570 cx_bus_dmamap_addr (void *arg, bus_dma_segment_t *segs, int nseg, int error) 571 { 572 unsigned long *addr; 573 574 if (error) 575 return; 576 577 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 578 addr = arg; 579 *addr = segs->ds_addr; 580 } 581 582 static int 583 cx_bus_dma_mem_alloc (int bnum, int cnum, cx_dma_mem_t *dmem) 584 { 585 int error; 586 587 error = bus_dma_tag_create (NULL, 16, 0, BUS_SPACE_MAXADDR_24BIT, 588 BUS_SPACE_MAXADDR, NULL, NULL, dmem->size, 1, 589 dmem->size, 0, NULL, NULL, &dmem->dmat); 590 if (error) { 591 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 592 else printf ("cx%d: ", bnum); 593 printf ("couldn't allocate tag for dma memory\n"); 594 return 0; 595 } 596 error = bus_dmamem_alloc (dmem->dmat, (void **)&dmem->virt, 597 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &dmem->mapp); 598 if (error) { 599 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 600 else printf ("cx%d: ", bnum); 601 printf ("couldn't allocate mem for dma memory\n"); 602 bus_dma_tag_destroy (dmem->dmat); 603 return 0; 604 } 605 error = bus_dmamap_load (dmem->dmat, dmem->mapp, dmem->virt, 606 dmem->size, cx_bus_dmamap_addr, &dmem->phys, 0); 607 if (error) { 608 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 609 else printf ("cx%d: ", bnum); 610 printf ("couldn't load mem map for dma memory\n"); 611 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 612 bus_dma_tag_destroy (dmem->dmat); 613 return 0; 614 } 615 return 1; 616 } 617 618 static void 619 cx_bus_dma_mem_free (cx_dma_mem_t *dmem) 620 { 621 bus_dmamap_unload (dmem->dmat, dmem->mapp); 622 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 623 bus_dma_tag_destroy (dmem->dmat); 624 } 625 626 /* 627 * The adapter is present, initialize the driver structures. 628 */ 629 static int cx_attach (device_t dev) 630 { 631 bdrv_t *bd = device_get_softc (dev); 632 rman_res_t iobase, drq, irq, rescount; 633 int unit = device_get_unit (dev); 634 char *cx_ln = CX_LOCK_NAME; 635 cx_board_t *b; 636 cx_chan_t *c; 637 drv_t *d; 638 int i; 639 int s; 640 641 KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit)); 642 643 bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount); 644 bd->base_rid = 0; 645 bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid, 646 iobase, iobase + NPORT, NPORT, RF_ACTIVE); 647 if (! bd->base_res) { 648 printf ("cx%d: cannot allocate base address\n", unit); 649 return ENXIO; 650 } 651 652 if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) { 653 for (i = 0; (drq = dmatab [i]) != 0; i++) { 654 if (!cx_is_free_res (dev, 0, SYS_RES_DRQ, 655 drq, drq + 1, 1)) 656 continue; 657 bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1); 658 break; 659 } 660 661 if (dmatab[i] == 0) { 662 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 663 bd->base_res); 664 printf ("cx%d: Couldn't get DRQ\n", unit); 665 return ENXIO; 666 } 667 } 668 669 bd->drq_rid = 0; 670 bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid, 671 drq, drq + 1, 1, RF_ACTIVE); 672 if (! bd->drq_res) { 673 printf ("cx%d: cannot allocate drq\n", unit); 674 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 675 bd->base_res); 676 return ENXIO; 677 } 678 679 if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) { 680 for (i = 0; (irq = irqtab [i]) != 0; i++) { 681 if (!cx_is_free_res (dev, 0, SYS_RES_IRQ, 682 irq, irq + 1, 1)) 683 continue; 684 bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1); 685 break; 686 } 687 688 if (irqtab[i] == 0) { 689 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 690 bd->drq_res); 691 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 692 bd->base_res); 693 printf ("cx%d: Couldn't get IRQ\n", unit); 694 return ENXIO; 695 } 696 } 697 698 bd->irq_rid = 0; 699 bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid, 700 irq, irq + 1, 1, RF_ACTIVE); 701 if (! bd->irq_res) { 702 printf ("cx%d: Couldn't allocate irq\n", unit); 703 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 704 bd->drq_res); 705 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 706 bd->base_res); 707 return ENXIO; 708 } 709 710 b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK); 711 if (!b) { 712 printf ("cx:%d: Couldn't allocate memory\n", unit); 713 return (ENXIO); 714 } 715 adapter[unit] = b; 716 bzero (b, sizeof(cx_board_t)); 717 718 if (! cx_open_board (b, unit, iobase, irq, drq)) { 719 printf ("cx%d: error loading firmware\n", unit); 720 free (b, M_DEVBUF); 721 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 722 bd->irq_res); 723 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 724 bd->drq_res); 725 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 726 bd->base_res); 727 return ENXIO; 728 } 729 730 bd->board = b; 731 732 cx_ln[2] = '' + unit; 733 mtx_init (&bd->cx_mtx, cx_ln, MTX_NETWORK_LOCK, MTX_DEF|MTX_RECURSE); 734 if (! probe_irq (b, irq)) { 735 printf ("cx%d: irq %ld not functional\n", unit, irq); 736 bd->board = 0; 737 adapter [unit] = 0; 738 mtx_destroy (&bd->cx_mtx); 739 free (b, M_DEVBUF); 740 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 741 bd->irq_res); 742 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 743 bd->drq_res); 744 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 745 bd->base_res); 746 return ENXIO; 747 } 748 b->sys = bd; 749 callout_init (&led_timo[b->num], 1); 750 s = splhigh (); 751 if (bus_setup_intr (dev, bd->irq_res, 752 INTR_TYPE_NET|INTR_MPSAFE, 753 NULL, cx_intr, bd, &bd->intrhand)) { 754 printf ("cx%d: Can't setup irq %ld\n", unit, irq); 755 bd->board = 0; 756 b->sys = 0; 757 adapter [unit] = 0; 758 mtx_destroy (&bd->cx_mtx); 759 free (b, M_DEVBUF); 760 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 761 bd->irq_res); 762 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 763 bd->drq_res); 764 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 765 bd->base_res); 766 splx (s); 767 return ENXIO; 768 } 769 770 CX_LOCK (bd); 771 cx_init (b, b->num, b->port, irq, drq); 772 cx_setup_board (b, 0, 0, 0); 773 CX_UNLOCK (bd); 774 775 printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name); 776 777 for (c=b->chan; c<b->chan+NCHAN; ++c) { 778 if (c->type == T_NONE) 779 continue; 780 d = &bd->channel[c->num]; 781 d->dmamem.size = sizeof(cx_buf_t); 782 if (! cx_bus_dma_mem_alloc (unit, c->num, &d->dmamem)) 783 continue; 784 d->board = b; 785 d->chan = c; 786 d->open_dev = 0; 787 c->sys = d; 788 channel [b->num*NCHAN + c->num] = d; 789 sprintf (d->name, "cx%d.%d", b->num, c->num); 790 791 switch (c->type) { 792 case T_SYNC_RS232: 793 case T_SYNC_V35: 794 case T_SYNC_RS449: 795 case T_UNIV: 796 case T_UNIV_RS232: 797 case T_UNIV_RS449: 798 case T_UNIV_V35: 799 callout_init (&d->timeout_handle, 1); 800 #ifdef NETGRAPH 801 if (ng_make_node_common (&typestruct, &d->node) != 0) { 802 printf ("%s: cannot make common node\n", d->name); 803 channel [b->num*NCHAN + c->num] = 0; 804 c->sys = 0; 805 cx_bus_dma_mem_free (&d->dmamem); 806 continue; 807 } 808 NG_NODE_SET_PRIVATE (d->node, d); 809 sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE, 810 c->board->num*NCHAN + c->num); 811 if (ng_name_node (d->node, d->nodename)) { 812 printf ("%s: cannot name node\n", d->nodename); 813 NG_NODE_UNREF (d->node); 814 channel [b->num*NCHAN + c->num] = 0; 815 c->sys = 0; 816 cx_bus_dma_mem_free (&d->dmamem); 817 continue; 818 } 819 d->lo_queue.ifq_maxlen = ifqmaxlen; 820 d->hi_queue.ifq_maxlen = ifqmaxlen; 821 mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF); 822 mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF); 823 #else /*NETGRAPH*/ 824 d->ifp = if_alloc(IFT_PPP); 825 if (d->ifp == NULL) { 826 printf ("%s: cannot if_alloc() common interface\n", 827 d->name); 828 channel [b->num*NCHAN + c->num] = 0; 829 c->sys = 0; 830 cx_bus_dma_mem_free (&d->dmamem); 831 continue; 832 } 833 d->ifp->if_softc = d; 834 if_initname (d->ifp, "cx", b->num * NCHAN + c->num); 835 d->ifp->if_mtu = PP_MTU; 836 d->ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST; 837 d->ifp->if_ioctl = cx_sioctl; 838 d->ifp->if_start = cx_ifstart; 839 d->ifp->if_init = cx_initialize; 840 d->queue.ifq_maxlen = 2; 841 mtx_init (&d->queue.ifq_mtx, "cx_queue", NULL, MTX_DEF); 842 sppp_attach (d->ifp); 843 if_attach (d->ifp); 844 IFP2SP(d->ifp)->pp_tlf = cx_tlf; 845 IFP2SP(d->ifp)->pp_tls = cx_tls; 846 /* If BPF is in the kernel, call the attach for it. 847 * Size of PPP header is 4 bytes. */ 848 bpfattach (d->ifp, DLT_PPP, 4); 849 #endif /*NETGRAPH*/ 850 } 851 d->tty = ttyalloc (); 852 d->tty->t_open = cx_topen; 853 d->tty->t_close = cx_tclose; 854 d->tty->t_param = cx_param; 855 d->tty->t_stop = cx_stop; 856 d->tty->t_modem = cx_tmodem; 857 d->tty->t_oproc = cx_oproc; 858 d->tty->t_sc = d; 859 CX_LOCK (bd); 860 cx_start_chan (c, d->dmamem.virt, d->dmamem.phys); 861 cx_register_receive (c, &cx_receive); 862 cx_register_transmit (c, &cx_transmit); 863 cx_register_error (c, &cx_error); 864 cx_register_modem (c, &cx_modem); 865 CX_UNLOCK (bd); 866 867 ttycreate(d->tty, TS_CALLOUT, "x%r%r", b->num, c->num); 868 d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num); 869 d->devt->si_drv1 = d; 870 callout_init (&d->dcd_timeout_handle, 1); 871 } 872 splx (s); 873 874 gone_in_dev(dev, 13, "sync serial (T1/E1) ISA card drivers"); 875 return 0; 876 } 877 878 static int cx_detach (device_t dev) 879 { 880 bdrv_t *bd = device_get_softc (dev); 881 cx_board_t *b = bd->board; 882 cx_chan_t *c; 883 int s; 884 885 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized")); 886 887 s = splhigh (); 888 CX_LOCK (bd); 889 /* Check if the device is busy (open). */ 890 for (c = b->chan; c < b->chan + NCHAN; ++c) { 891 drv_t *d = (drv_t*) c->sys; 892 893 if (!d || d->chan->type == T_NONE) 894 continue; 895 if (d->lock) { 896 CX_UNLOCK (bd); 897 splx (s); 898 return EBUSY; 899 } 900 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 901 (d->open_dev|0x2)) { 902 CX_UNLOCK (bd); 903 splx (s); 904 return EBUSY; 905 } 906 if (d->running) { 907 CX_UNLOCK (bd); 908 splx (s); 909 return EBUSY; 910 } 911 } 912 913 /* Deactivate the timeout routine. And soft interrupt*/ 914 callout_stop (&led_timo[b->num]); 915 916 for (c = b->chan; c < b->chan + NCHAN; ++c) { 917 drv_t *d = c->sys; 918 919 if (!d || d->chan->type == T_NONE) 920 continue; 921 922 callout_stop (&d->dcd_timeout_handle); 923 } 924 CX_UNLOCK (bd); 925 bus_teardown_intr (dev, bd->irq_res, bd->intrhand); 926 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 927 928 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 929 930 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res); 931 932 CX_LOCK (bd); 933 cx_close_board (b); 934 935 /* Detach the interfaces, free buffer memory. */ 936 for (c = b->chan; c < b->chan + NCHAN; ++c) { 937 drv_t *d = (drv_t*) c->sys; 938 939 if (!d || d->chan->type == T_NONE) 940 continue; 941 942 if (d->tty) { 943 ttyfree (d->tty); 944 d->tty = NULL; 945 } 946 947 callout_stop (&d->timeout_handle); 948 #ifdef NETGRAPH 949 if (d->node) { 950 ng_rmnode_self (d->node); 951 NG_NODE_UNREF (d->node); 952 d->node = NULL; 953 } 954 mtx_destroy (&d->lo_queue.ifq_mtx); 955 mtx_destroy (&d->hi_queue.ifq_mtx); 956 #else 957 /* Detach from the packet filter list of interfaces. */ 958 bpfdetach (d->ifp); 959 /* Detach from the sync PPP list. */ 960 sppp_detach (d->ifp); 961 962 if_detach (d->ifp); 963 if_free(d->ifp); 964 /* XXXRIK: check interconnection with irq handler */ 965 IF_DRAIN (&d->queue); 966 mtx_destroy (&d->queue.ifq_mtx); 967 #endif 968 destroy_dev (d->devt); 969 } 970 971 cx_led_off (b); 972 CX_UNLOCK (bd); 973 callout_drain (&led_timo[b->num]); 974 for (c = b->chan; c < b->chan + NCHAN; ++c) { 975 drv_t *d = c->sys; 976 977 if (!d || d->chan->type == T_NONE) 978 continue; 979 980 callout_drain (&d->dcd_timeout_handle); 981 callout_drain (&d->timeout_handle); 982 } 983 splx (s); 984 985 s = splhigh (); 986 for (c = b->chan; c < b->chan + NCHAN; ++c) { 987 drv_t *d = (drv_t*) c->sys; 988 989 if (!d || d->chan->type == T_NONE) 990 continue; 991 992 /* Deallocate buffers. */ 993 cx_bus_dma_mem_free (&d->dmamem); 994 } 995 bd->board = NULL; 996 adapter [b->num] = NULL; 997 free (b, M_DEVBUF); 998 splx (s); 999 1000 mtx_destroy (&bd->cx_mtx); 1001 1002 return 0; 1003 } 1004 1005 #ifndef NETGRAPH 1006 static void cx_ifstart (struct ifnet *ifp) 1007 { 1008 drv_t *d = ifp->if_softc; 1009 bdrv_t *bd = d->board->sys; 1010 1011 CX_LOCK (bd); 1012 cx_start (d); 1013 CX_UNLOCK (bd); 1014 } 1015 1016 static void cx_tlf (struct sppp *sp) 1017 { 1018 drv_t *d = SP2IFP(sp)->if_softc; 1019 1020 CX_DEBUG (d, ("cx_tlf\n")); 1021 /* cx_set_dtr (d->chan, 0);*/ 1022 /* cx_set_rts (d->chan, 0);*/ 1023 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1024 sp->pp_down (sp); 1025 } 1026 1027 static void cx_tls (struct sppp *sp) 1028 { 1029 drv_t *d = SP2IFP(sp)->if_softc; 1030 1031 CX_DEBUG (d, ("cx_tls\n")); 1032 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1033 sp->pp_up (sp); 1034 } 1035 1036 /* 1037 * Initialization of interface. 1038 * It seems to be never called by upper level. 1039 */ 1040 static void cx_initialize (void *softc) 1041 { 1042 drv_t *d = softc; 1043 1044 CX_DEBUG (d, ("cx_initialize\n")); 1045 } 1046 1047 /* 1048 * Process an ioctl request. 1049 */ 1050 static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data) 1051 { 1052 drv_t *d = ifp->if_softc; 1053 bdrv_t *bd = d->board->sys; 1054 int error, s, was_up, should_be_up; 1055 1056 /* No socket ioctls while the channel is in async mode. */ 1057 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC) 1058 return EBUSY; 1059 1060 /* Socket ioctls on slave subchannels are not allowed. */ 1061 was_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1062 error = sppp_ioctl (ifp, cmd, data); 1063 if (error) 1064 return error; 1065 1066 s = splhigh (); 1067 CX_LOCK (bd); 1068 if (! (ifp->if_flags & IFF_DEBUG)) 1069 d->chan->debug = 0; 1070 else 1071 d->chan->debug = d->chan->debug_shadow; 1072 CX_UNLOCK (bd); 1073 splx (s); 1074 1075 switch (cmd) { 1076 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0; 1077 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0; 1078 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0; 1079 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break; 1080 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break; 1081 } 1082 1083 /* We get here only in case of SIFFLAGS or SIFADDR. */ 1084 s = splhigh (); 1085 CX_LOCK (bd); 1086 should_be_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1087 if (!was_up && should_be_up) { 1088 /* Interface goes up -- start it. */ 1089 cx_up (d); 1090 cx_start (d); 1091 } else if (was_up && !should_be_up) { 1092 /* Interface is going down -- stop it. */ 1093 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/ 1094 cx_down (d); 1095 } 1096 CX_UNLOCK (bd); 1097 splx (s); 1098 return 0; 1099 } 1100 #endif /*NETGRAPH*/ 1101 1102 /* 1103 * Stop the interface. Called on splimp(). 1104 */ 1105 static void cx_down (drv_t *d) 1106 { 1107 int s = splhigh (); 1108 CX_DEBUG (d, ("cx_down\n")); 1109 cx_set_dtr (d->chan, 0); 1110 cx_set_rts (d->chan, 0); 1111 d->running = 0; 1112 callout_stop (&d->timeout_handle); 1113 splx (s); 1114 } 1115 1116 /* 1117 * Start the interface. Called on splimp(). 1118 */ 1119 static void cx_up (drv_t *d) 1120 { 1121 int s = splhigh (); 1122 CX_DEBUG (d, ("cx_up\n")); 1123 cx_set_dtr (d->chan, 1); 1124 cx_set_rts (d->chan, 1); 1125 d->running = 1; 1126 splx (s); 1127 } 1128 1129 /* 1130 * Start output on the (slave) interface. Get another datagram to send 1131 * off of the interface queue, and copy it to the interface 1132 * before starting the output. 1133 */ 1134 static void cx_send (drv_t *d) 1135 { 1136 struct mbuf *m; 1137 u_short len; 1138 1139 CX_DEBUG2 (d, ("cx_send\n")); 1140 1141 /* No output if the interface is down. */ 1142 if (! d->running) 1143 return; 1144 1145 /* No output if the modem is off. */ 1146 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan)) 1147 return; 1148 1149 if (cx_buf_free (d->chan)) { 1150 /* Get the packet to send. */ 1151 #ifdef NETGRAPH 1152 IF_DEQUEUE (&d->hi_queue, m); 1153 if (! m) 1154 IF_DEQUEUE (&d->lo_queue, m); 1155 #else 1156 m = sppp_dequeue (d->ifp); 1157 #endif 1158 if (! m) 1159 return; 1160 #ifndef NETGRAPH 1161 BPF_MTAP (d->ifp, m); 1162 #endif 1163 len = m_length (m, NULL); 1164 if (! m->m_next) 1165 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t), 1166 len, 0); 1167 else { 1168 u_char buf [DMABUFSZ]; 1169 m_copydata (m, 0, len, buf); 1170 cx_send_packet (d->chan, buf, len, 0); 1171 } 1172 m_freem (m); 1173 1174 /* Set up transmit timeout, 10 seconds. */ 1175 d->timeout = 10; 1176 } 1177 #ifndef NETGRAPH 1178 d->ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1179 #endif 1180 } 1181 1182 /* 1183 * Start output on the interface. 1184 * Always called on splimp(). 1185 */ 1186 static void cx_start (drv_t *d) 1187 { 1188 int s = splhigh (); 1189 if (d->running) { 1190 if (! d->chan->dtr) 1191 cx_set_dtr (d->chan, 1); 1192 if (! d->chan->rts) 1193 cx_set_rts (d->chan, 1); 1194 cx_send (d); 1195 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d); 1196 } 1197 splx (s); 1198 } 1199 1200 /* 1201 * Handle transmit timeouts. 1202 * Recover after lost transmit interrupts. 1203 * Always called on splimp(). 1204 */ 1205 static void cx_watchdog (drv_t *d) 1206 { 1207 1208 CX_DEBUG (d, ("device timeout\n")); 1209 if (d->running) { 1210 cx_setup_chan (d->chan); 1211 cx_start_chan (d->chan, 0, 0); 1212 cx_set_dtr (d->chan, 1); 1213 cx_set_rts (d->chan, 1); 1214 cx_start (d); 1215 } 1216 } 1217 1218 static void cx_watchdog_timer (void *arg) 1219 { 1220 drv_t *d = arg; 1221 bdrv_t *bd = d->board->sys; 1222 1223 CX_LOCK (bd); 1224 if (d->timeout == 1) 1225 cx_watchdog (d); 1226 if (d->timeout) 1227 d->timeout--; 1228 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d); 1229 CX_UNLOCK (bd); 1230 } 1231 1232 /* 1233 * Transmit callback function. 1234 */ 1235 static void cx_transmit (cx_chan_t *c, void *attachment, int len) 1236 { 1237 drv_t *d = c->sys; 1238 1239 if (!d) 1240 return; 1241 1242 if (c->mode == M_ASYNC && d->tty) { 1243 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH); 1244 d->atimeout = 0; 1245 if (d->tty->t_dev) { 1246 d->intr_action |= CX_WRITE; 1247 MY_SOFT_INTR = 1; 1248 swi_sched (cx_fast_ih, 0); 1249 } 1250 return; 1251 } 1252 d->timeout = 0; 1253 #ifndef NETGRAPH 1254 if_inc_counter(d->ifp, IFCOUNTER_OPACKETS, 1); 1255 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1256 #endif 1257 cx_start (d); 1258 } 1259 1260 /* 1261 * Process the received packet. 1262 */ 1263 static void cx_receive (cx_chan_t *c, char *data, int len) 1264 { 1265 drv_t *d = c->sys; 1266 struct mbuf *m; 1267 char *cc = data; 1268 #ifdef NETGRAPH 1269 int error; 1270 #endif 1271 1272 if (!d) 1273 return; 1274 1275 if (c->mode == M_ASYNC && d->tty) { 1276 if (d->tty->t_state & TS_ISOPEN) { 1277 async_q *q = &d->aqueue; 1278 int size = BF_SZ - 1 - AQ_GSZ (q); 1279 1280 if (len <= 0 && !size) 1281 return; 1282 1283 if (len > size) { 1284 c->ierrs++; 1285 cx_error (c, CX_OVERRUN); 1286 len = size - 1; 1287 } 1288 1289 while (len--) { 1290 AQ_PUSH (q, *(unsigned char *)cc); 1291 cc++; 1292 } 1293 1294 d->intr_action |= CX_READ; 1295 MY_SOFT_INTR = 1; 1296 swi_sched (cx_fast_ih, 0); 1297 } 1298 return; 1299 } 1300 if (! d->running) 1301 return; 1302 1303 m = makembuf (data, len); 1304 if (! m) { 1305 CX_DEBUG (d, ("no memory for packet\n")); 1306 #ifndef NETGRAPH 1307 if_inc_counter(d->ifp, IFCOUNTER_IQDROPS, 1); 1308 #endif 1309 return; 1310 } 1311 if (c->debug > 1) 1312 m_print (m, 0); 1313 #ifdef NETGRAPH 1314 m->m_pkthdr.rcvif = 0; 1315 NG_SEND_DATA_ONLY (error, d->hook, m); 1316 #else 1317 if_inc_counter(d->ifp, IFCOUNTER_IPACKETS, 1); 1318 m->m_pkthdr.rcvif = d->ifp; 1319 /* Check if there's a BPF listener on this interface. 1320 * If so, hand off the raw packet to bpf. */ 1321 BPF_MTAP(d->ifp, m); 1322 IF_ENQUEUE (&d->queue, m); 1323 #endif 1324 } 1325 1326 #define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\ 1327 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\ 1328 && (!(tp->t_iflag & PARMRK)\ 1329 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\ 1330 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\ 1331 && linesw[tp->t_line]->l_rint == ttyinput) 1332 1333 /* 1334 * Error callback function. 1335 */ 1336 static void cx_error (cx_chan_t *c, int data) 1337 { 1338 drv_t *d = c->sys; 1339 async_q *q; 1340 1341 if (!d) 1342 return; 1343 1344 q = &(d->aqueue); 1345 1346 switch (data) { 1347 case CX_FRAME: 1348 CX_DEBUG (d, ("frame error\n")); 1349 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1350 && (AQ_GSZ (q) < BF_SZ - 1) 1351 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1352 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1353 AQ_PUSH (q, TTY_FE); 1354 d->intr_action |= CX_READ; 1355 MY_SOFT_INTR = 1; 1356 swi_sched (cx_fast_ih, 0); 1357 } 1358 #ifndef NETGRAPH 1359 else 1360 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1); 1361 #endif 1362 break; 1363 case CX_CRC: 1364 CX_DEBUG (d, ("crc error\n")); 1365 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1366 && (AQ_GSZ (q) < BF_SZ - 1) 1367 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1368 || !(d->tty->t_iflag & INPCK) 1369 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1370 AQ_PUSH (q, TTY_PE); 1371 d->intr_action |= CX_READ; 1372 MY_SOFT_INTR = 1; 1373 swi_sched (cx_fast_ih, 0); 1374 } 1375 #ifndef NETGRAPH 1376 else 1377 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1); 1378 #endif 1379 break; 1380 case CX_OVERRUN: 1381 CX_DEBUG (d, ("overrun error\n")); 1382 #ifdef TTY_OE 1383 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1384 && (AQ_GSZ (q) < BF_SZ - 1) 1385 && (!CONDITION((&d->tty->t_termios), (d->tty)))) { 1386 AQ_PUSH (q, TTY_OE); 1387 d->intr_action |= CX_READ; 1388 MY_SOFT_INTR = 1; 1389 swi_sched (cx_fast_ih, 0); 1390 } 1391 #endif 1392 #ifndef NETGRAPH 1393 else { 1394 if_inc_counter(d->ifp, IFCOUNTER_COLLISIONS, 1); 1395 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1); 1396 } 1397 #endif 1398 break; 1399 case CX_OVERFLOW: 1400 CX_DEBUG (d, ("overflow error\n")); 1401 #ifndef NETGRAPH 1402 if (c->mode != M_ASYNC) 1403 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1); 1404 #endif 1405 break; 1406 case CX_UNDERRUN: 1407 CX_DEBUG (d, ("underrun error\n")); 1408 if (c->mode != M_ASYNC) { 1409 d->timeout = 0; 1410 #ifndef NETGRAPH 1411 if_inc_counter(d->ifp, IFCOUNTER_OERRORS, 1); 1412 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1413 #endif 1414 cx_start (d); 1415 } 1416 break; 1417 case CX_BREAK: 1418 CX_DEBUG (d, ("break error\n")); 1419 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1420 && (AQ_GSZ (q) < BF_SZ - 1) 1421 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1422 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) { 1423 AQ_PUSH (q, TTY_BI); 1424 d->intr_action |= CX_READ; 1425 MY_SOFT_INTR = 1; 1426 swi_sched (cx_fast_ih, 0); 1427 } 1428 #ifndef NETGRAPH 1429 else 1430 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1); 1431 #endif 1432 break; 1433 default: 1434 CX_DEBUG (d, ("error #%d\n", data)); 1435 } 1436 } 1437 1438 static int cx_topen (struct tty *tp, struct cdev *dev) 1439 { 1440 bdrv_t *bd; 1441 drv_t *d; 1442 1443 d = tp->t_sc; 1444 CX_DEBUG2 (d, ("cx_open (serial)\n")); 1445 1446 bd = d->board->sys; 1447 1448 if (d->chan->mode != M_ASYNC) 1449 return (EBUSY); 1450 1451 d->open_dev |= 0x2; 1452 CX_LOCK (bd); 1453 cx_start_chan (d->chan, 0, 0); 1454 cx_set_dtr (d->chan, 1); 1455 cx_set_rts (d->chan, 1); 1456 d->cd = cx_get_cd (d->chan); 1457 CX_UNLOCK (bd); 1458 1459 CX_DEBUG2 (d, ("cx_open done\n")); 1460 1461 return 0; 1462 } 1463 1464 static void cx_tclose (struct tty *tp) 1465 { 1466 drv_t *d; 1467 bdrv_t *bd; 1468 1469 d = tp->t_sc; 1470 CX_DEBUG2 (d, ("cx_close\n")); 1471 bd = d->board->sys; 1472 CX_LOCK (bd); 1473 /* Disable receiver. 1474 * Transmitter continues sending the queued data. */ 1475 cx_enable_receive (d->chan, 0); 1476 CX_UNLOCK (bd); 1477 d->open_dev &= ~0x2; 1478 } 1479 1480 static int cx_tmodem (struct tty *tp, int sigon, int sigoff) 1481 { 1482 drv_t *d; 1483 bdrv_t *bd; 1484 1485 d = tp->t_sc; 1486 bd = d->board->sys; 1487 1488 CX_LOCK (bd); 1489 if (!sigon && !sigoff) { 1490 if (cx_get_dsr (d->chan)) sigon |= SER_DSR; 1491 if (cx_get_cd (d->chan)) sigon |= SER_DCD; 1492 if (cx_get_cts (d->chan)) sigon |= SER_CTS; 1493 if (d->chan->dtr) sigon |= SER_DTR; 1494 if (d->chan->rts) sigon |= SER_RTS; 1495 CX_UNLOCK (bd); 1496 return sigon; 1497 } 1498 1499 if (sigon & SER_DTR) 1500 cx_set_dtr (d->chan, 1); 1501 if (sigoff & SER_DTR) 1502 cx_set_dtr (d->chan, 0); 1503 if (sigon & SER_RTS) 1504 cx_set_rts (d->chan, 1); 1505 if (sigoff & SER_RTS) 1506 cx_set_rts (d->chan, 0); 1507 CX_UNLOCK (bd); 1508 1509 return (0); 1510 } 1511 1512 static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td) 1513 { 1514 int unit; 1515 drv_t *d; 1516 1517 d = dev->si_drv1; 1518 unit = d->chan->num; 1519 1520 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n", 1521 unit, flag, mode)); 1522 1523 d->open_dev |= 0x1; 1524 1525 CX_DEBUG2 (d, ("cx_open done\n")); 1526 1527 return 0; 1528 } 1529 1530 static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td) 1531 { 1532 drv_t *d; 1533 1534 d = dev->si_drv1; 1535 CX_DEBUG2 (d, ("cx_close\n")); 1536 d->open_dev &= ~0x1; 1537 return 0; 1538 } 1539 1540 static int cx_modem_status (drv_t *d) 1541 { 1542 bdrv_t *bd = d->board->sys; 1543 int status = 0, s = splhigh (); 1544 CX_LOCK (bd); 1545 /* Already opened by someone or network interface is up? */ 1546 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1547 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running)) 1548 status = TIOCM_LE; /* always enabled while open */ 1549 1550 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR; 1551 if (cx_get_cd (d->chan)) status |= TIOCM_CD; 1552 if (cx_get_cts (d->chan)) status |= TIOCM_CTS; 1553 if (d->chan->dtr) status |= TIOCM_DTR; 1554 if (d->chan->rts) status |= TIOCM_RTS; 1555 CX_UNLOCK (bd); 1556 splx (s); 1557 return status; 1558 } 1559 1560 static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1561 { 1562 drv_t *d; 1563 bdrv_t *bd; 1564 cx_chan_t *c; 1565 struct serial_statistics *st; 1566 int error, s; 1567 char mask[16]; 1568 1569 d = dev->si_drv1; 1570 c = d->chan; 1571 1572 bd = d->board->sys; 1573 1574 switch (cmd) { 1575 case SERIAL_GETREGISTERED: 1576 CX_DEBUG2 (d, ("ioctl: getregistered\n")); 1577 bzero (mask, sizeof(mask)); 1578 for (s=0; s<NCX*NCHAN; ++s) 1579 if (channel [s]) 1580 mask [s/8] |= 1 << (s & 7); 1581 bcopy (mask, data, sizeof (mask)); 1582 return 0; 1583 1584 case SERIAL_GETPORT: 1585 CX_DEBUG2 (d, ("ioctl: getport\n")); 1586 s = splhigh (); 1587 CX_LOCK (bd); 1588 *(int *)data = cx_get_port (c); 1589 CX_UNLOCK (bd); 1590 splx (s); 1591 if (*(int *)data<0) 1592 return (EINVAL); 1593 else 1594 return 0; 1595 1596 case SERIAL_SETPORT: 1597 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1598 /* Only for superuser! */ 1599 error = priv_check (td, PRIV_DRIVER); 1600 if (error) 1601 return error; 1602 1603 s = splhigh (); 1604 CX_LOCK (bd); 1605 cx_set_port (c, *(int *)data); 1606 CX_UNLOCK (bd); 1607 splx (s); 1608 return 0; 1609 1610 #ifndef NETGRAPH 1611 case SERIAL_GETPROTO: 1612 CX_DEBUG2 (d, ("ioctl: getproto\n")); 1613 s = splhigh (); 1614 CX_LOCK (bd); 1615 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" : 1616 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" : 1617 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp"); 1618 CX_UNLOCK (bd); 1619 splx (s); 1620 return 0; 1621 1622 case SERIAL_SETPROTO: 1623 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1624 /* Only for superuser! */ 1625 error = priv_check (td, PRIV_DRIVER); 1626 if (error) 1627 return error; 1628 if (c->mode == M_ASYNC) 1629 return EBUSY; 1630 if (d->ifp->if_drv_flags & IFF_DRV_RUNNING) 1631 return EBUSY; 1632 if (! strcmp ("cisco", (char*)data)) { 1633 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR); 1634 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1635 d->ifp->if_flags |= PP_CISCO; 1636 } else if (! strcmp ("fr", (char*)data)) { 1637 d->ifp->if_flags &= ~(PP_CISCO); 1638 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE; 1639 } else if (! strcmp ("ppp", (char*)data)) { 1640 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE); 1641 d->ifp->if_flags &= ~(PP_CISCO); 1642 } else 1643 return EINVAL; 1644 return 0; 1645 1646 case SERIAL_GETKEEPALIVE: 1647 CX_DEBUG2 (d, ("ioctl: getkeepalive\n")); 1648 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1649 (d->ifp->if_flags & PP_CISCO) || 1650 (c->mode == M_ASYNC)) 1651 return EINVAL; 1652 s = splhigh (); 1653 CX_LOCK (bd); 1654 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0; 1655 CX_UNLOCK (bd); 1656 splx (s); 1657 return 0; 1658 1659 case SERIAL_SETKEEPALIVE: 1660 CX_DEBUG2 (d, ("ioctl: setkeepalive\n")); 1661 /* Only for superuser! */ 1662 error = priv_check (td, PRIV_DRIVER); 1663 if (error) 1664 return error; 1665 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1666 (d->ifp->if_flags & PP_CISCO)) 1667 return EINVAL; 1668 s = splhigh (); 1669 CX_LOCK (bd); 1670 if (*(int*)data) 1671 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1672 else 1673 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE; 1674 CX_UNLOCK (bd); 1675 splx (s); 1676 return 0; 1677 #endif /*NETGRAPH*/ 1678 1679 case SERIAL_GETMODE: 1680 CX_DEBUG2 (d, ("ioctl: getmode\n")); 1681 s = splhigh (); 1682 CX_LOCK (bd); 1683 *(int*)data = (c->mode == M_ASYNC) ? 1684 SERIAL_ASYNC : SERIAL_HDLC; 1685 CX_UNLOCK (bd); 1686 splx (s); 1687 return 0; 1688 1689 case SERIAL_SETMODE: 1690 CX_DEBUG2 (d, ("ioctl: setmode\n")); 1691 /* Only for superuser! */ 1692 error = priv_check (td, PRIV_DRIVER); 1693 if (error) 1694 return error; 1695 1696 /* Somebody is waiting for carrier? */ 1697 if (d->lock) 1698 return EBUSY; 1699 /* /dev/ttyXX is already opened by someone? */ 1700 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1701 (d->open_dev|0x2)) 1702 return EBUSY; 1703 /* Network interface is up? 1704 * Cannot change to async mode. */ 1705 if (c->mode != M_ASYNC && d->running && 1706 (*(int*)data == SERIAL_ASYNC)) 1707 return EBUSY; 1708 1709 s = splhigh (); 1710 CX_LOCK (bd); 1711 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) { 1712 cx_set_mode (c, M_ASYNC); 1713 cx_enable_receive (c, 0); 1714 cx_enable_transmit (c, 0); 1715 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) { 1716 if (d->ifp->if_flags & IFF_DEBUG) 1717 c->debug = c->debug_shadow; 1718 cx_set_mode (c, M_HDLC); 1719 cx_enable_receive (c, 1); 1720 cx_enable_transmit (c, 1); 1721 } 1722 CX_UNLOCK (bd); 1723 splx (s); 1724 return 0; 1725 1726 case SERIAL_GETSTAT: 1727 CX_DEBUG2 (d, ("ioctl: getestat\n")); 1728 st = (struct serial_statistics*) data; 1729 s = splhigh (); 1730 CX_LOCK (bd); 1731 st->rintr = c->rintr; 1732 st->tintr = c->tintr; 1733 st->mintr = c->mintr; 1734 st->ibytes = c->ibytes; 1735 st->ipkts = c->ipkts; 1736 st->ierrs = c->ierrs; 1737 st->obytes = c->obytes; 1738 st->opkts = c->opkts; 1739 st->oerrs = c->oerrs; 1740 CX_UNLOCK (bd); 1741 splx (s); 1742 return 0; 1743 1744 case SERIAL_CLRSTAT: 1745 CX_DEBUG2 (d, ("ioctl: clrstat\n")); 1746 /* Only for superuser! */ 1747 error = priv_check (td, PRIV_DRIVER); 1748 if (error) 1749 return error; 1750 s = splhigh (); 1751 CX_LOCK (bd); 1752 c->rintr = 0; 1753 c->tintr = 0; 1754 c->mintr = 0; 1755 c->ibytes = 0; 1756 c->ipkts = 0; 1757 c->ierrs = 0; 1758 c->obytes = 0; 1759 c->opkts = 0; 1760 c->oerrs = 0; 1761 CX_UNLOCK (bd); 1762 splx (s); 1763 return 0; 1764 1765 case SERIAL_GETBAUD: 1766 CX_DEBUG2 (d, ("ioctl: getbaud\n")); 1767 if (c->mode == M_ASYNC) 1768 return EINVAL; 1769 s = splhigh (); 1770 CX_LOCK (bd); 1771 *(long*)data = cx_get_baud(c); 1772 CX_UNLOCK (bd); 1773 splx (s); 1774 return 0; 1775 1776 case SERIAL_SETBAUD: 1777 CX_DEBUG2 (d, ("ioctl: setbaud\n")); 1778 /* Only for superuser! */ 1779 error = priv_check (td, PRIV_DRIVER); 1780 if (error) 1781 return error; 1782 if (c->mode == M_ASYNC) 1783 return EINVAL; 1784 s = splhigh (); 1785 CX_LOCK (bd); 1786 cx_set_baud (c, *(long*)data); 1787 CX_UNLOCK (bd); 1788 splx (s); 1789 return 0; 1790 1791 case SERIAL_GETLOOP: 1792 CX_DEBUG2 (d, ("ioctl: getloop\n")); 1793 if (c->mode == M_ASYNC) 1794 return EINVAL; 1795 s = splhigh (); 1796 CX_LOCK (bd); 1797 *(int*)data = cx_get_loop (c); 1798 CX_UNLOCK (bd); 1799 splx (s); 1800 return 0; 1801 1802 case SERIAL_SETLOOP: 1803 CX_DEBUG2 (d, ("ioctl: setloop\n")); 1804 /* Only for superuser! */ 1805 error = priv_check (td, PRIV_DRIVER); 1806 if (error) 1807 return error; 1808 if (c->mode == M_ASYNC) 1809 return EINVAL; 1810 s = splhigh (); 1811 CX_LOCK (bd); 1812 cx_set_loop (c, *(int*)data); 1813 CX_UNLOCK (bd); 1814 splx (s); 1815 return 0; 1816 1817 case SERIAL_GETDPLL: 1818 CX_DEBUG2 (d, ("ioctl: getdpll\n")); 1819 if (c->mode == M_ASYNC) 1820 return EINVAL; 1821 s = splhigh (); 1822 CX_LOCK (bd); 1823 *(int*)data = cx_get_dpll (c); 1824 CX_UNLOCK (bd); 1825 splx (s); 1826 return 0; 1827 1828 case SERIAL_SETDPLL: 1829 CX_DEBUG2 (d, ("ioctl: setdpll\n")); 1830 /* Only for superuser! */ 1831 error = priv_check (td, PRIV_DRIVER); 1832 if (error) 1833 return error; 1834 if (c->mode == M_ASYNC) 1835 return EINVAL; 1836 s = splhigh (); 1837 CX_LOCK (bd); 1838 cx_set_dpll (c, *(int*)data); 1839 CX_UNLOCK (bd); 1840 splx (s); 1841 return 0; 1842 1843 case SERIAL_GETNRZI: 1844 CX_DEBUG2 (d, ("ioctl: getnrzi\n")); 1845 if (c->mode == M_ASYNC) 1846 return EINVAL; 1847 s = splhigh (); 1848 CX_LOCK (bd); 1849 *(int*)data = cx_get_nrzi (c); 1850 CX_UNLOCK (bd); 1851 splx (s); 1852 return 0; 1853 1854 case SERIAL_SETNRZI: 1855 CX_DEBUG2 (d, ("ioctl: setnrzi\n")); 1856 /* Only for superuser! */ 1857 error = priv_check (td, PRIV_DRIVER); 1858 if (error) 1859 return error; 1860 if (c->mode == M_ASYNC) 1861 return EINVAL; 1862 s = splhigh (); 1863 CX_LOCK (bd); 1864 cx_set_nrzi (c, *(int*)data); 1865 CX_UNLOCK (bd); 1866 splx (s); 1867 return 0; 1868 1869 case SERIAL_GETDEBUG: 1870 CX_DEBUG2 (d, ("ioctl: getdebug\n")); 1871 s = splhigh (); 1872 CX_LOCK (bd); 1873 *(int*)data = c->debug; 1874 CX_UNLOCK (bd); 1875 splx (s); 1876 return 0; 1877 1878 case SERIAL_SETDEBUG: 1879 CX_DEBUG2 (d, ("ioctl: setdebug\n")); 1880 /* Only for superuser! */ 1881 error = priv_check (td, PRIV_DRIVER); 1882 if (error) 1883 return error; 1884 s = splhigh (); 1885 CX_LOCK (bd); 1886 #ifndef NETGRAPH 1887 if (c->mode == M_ASYNC) { 1888 c->debug = *(int*)data; 1889 } else { 1890 /* 1891 * The debug_shadow is always greater than zero for 1892 * logic simplicity. For switching debug off the 1893 * IFF_DEBUG is responsible (for !M_ASYNC mode). 1894 */ 1895 c->debug_shadow = (*(int*)data) ? (*(int*)data) : 1; 1896 if (d->ifp->if_flags & IFF_DEBUG) 1897 c->debug = c->debug_shadow; 1898 } 1899 #else 1900 c->debug = *(int*)data; 1901 #endif 1902 CX_UNLOCK (bd); 1903 splx (s); 1904 return 0; 1905 } 1906 1907 switch (cmd) { 1908 case TIOCSDTR: /* Set DTR */ 1909 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n")); 1910 s = splhigh (); 1911 CX_LOCK (bd); 1912 cx_set_dtr (c, 1); 1913 CX_UNLOCK (bd); 1914 splx (s); 1915 return 0; 1916 1917 case TIOCCDTR: /* Clear DTR */ 1918 CX_DEBUG2 (d, ("ioctl: tioccdtr\n")); 1919 s = splhigh (); 1920 CX_LOCK (bd); 1921 cx_set_dtr (c, 0); 1922 CX_UNLOCK (bd); 1923 splx (s); 1924 return 0; 1925 1926 case TIOCMSET: /* Set DTR/RTS */ 1927 CX_DEBUG2 (d, ("ioctl: tiocmset\n")); 1928 s = splhigh (); 1929 CX_LOCK (bd); 1930 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0); 1931 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0); 1932 CX_UNLOCK (bd); 1933 splx (s); 1934 return 0; 1935 1936 case TIOCMBIS: /* Add DTR/RTS */ 1937 CX_DEBUG2 (d, ("ioctl: tiocmbis\n")); 1938 s = splhigh (); 1939 CX_LOCK (bd); 1940 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1); 1941 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1); 1942 CX_UNLOCK (bd); 1943 splx (s); 1944 return 0; 1945 1946 case TIOCMBIC: /* Clear DTR/RTS */ 1947 CX_DEBUG2 (d, ("ioctl: tiocmbic\n")); 1948 s = splhigh (); 1949 CX_LOCK (bd); 1950 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0); 1951 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0); 1952 CX_UNLOCK (bd); 1953 splx (s); 1954 return 0; 1955 1956 case TIOCMGET: /* Get modem status */ 1957 CX_DEBUG2 (d, ("ioctl: tiocmget\n")); 1958 *(int*)data = cx_modem_status (d); 1959 return 0; 1960 1961 } 1962 1963 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd)); 1964 return ENOTTY; 1965 } 1966 1967 void cx_softintr (void *unused) 1968 { 1969 drv_t *d; 1970 bdrv_t *bd; 1971 async_q *q; 1972 int i, s, ic, k; 1973 while (MY_SOFT_INTR) { 1974 MY_SOFT_INTR = 0; 1975 for (i=0; i<NCX*NCHAN; ++i) { 1976 d = channel [i]; 1977 if (!d || !d->chan || d->chan->type == T_NONE 1978 || d->chan->mode != M_ASYNC || !d->tty 1979 || !d->tty->t_dev) 1980 continue; 1981 bd = d->board->sys; 1982 s = splhigh (); 1983 CX_LOCK (bd); 1984 if (d->intr_action & CX_READ) { 1985 q = &(d->aqueue); 1986 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) { 1987 k = AQ_GSZ(q); 1988 if (d->tty->t_rawq.c_cc + k > 1989 d->tty->t_ihiwat 1990 && (d->tty->t_cflag & CRTS_IFLOW 1991 || d->tty->t_iflag & IXOFF) 1992 && !(d->tty->t_state & TS_TBLOCK)) 1993 ttyblock(d->tty); 1994 d->tty->t_rawcc += k; 1995 while (k>0) { 1996 k--; 1997 AQ_POP (q, ic); 1998 CX_UNLOCK (bd); 1999 splx (s); 2000 putc (ic, &d->tty->t_rawq); 2001 s = splhigh (); 2002 CX_LOCK (bd); 2003 } 2004 ttwakeup(d->tty); 2005 if (d->tty->t_state & TS_TTSTOP 2006 && (d->tty->t_iflag & IXANY 2007 || d->tty->t_cc[VSTART] == 2008 d->tty->t_cc[VSTOP])) { 2009 d->tty->t_state &= ~TS_TTSTOP; 2010 d->tty->t_lflag &= ~FLUSHO; 2011 d->intr_action |= CX_WRITE; 2012 } 2013 } else { 2014 while (q->end != q->beg) { 2015 AQ_POP (q, ic); 2016 CX_UNLOCK (bd); 2017 splx (s); 2018 ttyld_rint (d->tty, ic); 2019 s = splhigh (); 2020 CX_LOCK (bd); 2021 } 2022 } 2023 d->intr_action &= ~CX_READ; 2024 } 2025 splx (s); 2026 CX_UNLOCK (bd); 2027 2028 s = splhigh (); 2029 CX_LOCK (bd); 2030 if (d->intr_action & CX_WRITE) { 2031 if (d->tty->t_line) 2032 ttyld_start (d->tty); 2033 else 2034 cx_oproc (d->tty); 2035 d->intr_action &= ~CX_WRITE; 2036 } 2037 CX_UNLOCK (bd); 2038 splx (s); 2039 2040 } 2041 } 2042 } 2043 2044 /* 2045 * Fill transmitter buffer with data. 2046 */ 2047 static void cx_oproc (struct tty *tp) 2048 { 2049 int s, k; 2050 drv_t *d; 2051 bdrv_t *bd; 2052 static u_char buf[DMABUFSZ]; 2053 u_char *p; 2054 u_short len = 0, sublen = 0; 2055 2056 d = tp->t_sc; 2057 bd = d->board->sys; 2058 2059 CX_DEBUG2 (d, ("cx_oproc\n")); 2060 2061 s = splhigh (); 2062 CX_LOCK (bd); 2063 2064 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts) 2065 cx_set_rts (d->chan, 0); 2066 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts) 2067 cx_set_rts (d->chan, 1); 2068 2069 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) { 2070 /* Start transmitter. */ 2071 cx_enable_transmit (d->chan, 1); 2072 2073 /* Is it busy? */ 2074 if (! cx_buf_free (d->chan)) { 2075 tp->t_state |= TS_BUSY; 2076 CX_UNLOCK (bd); 2077 splx (s); 2078 return; 2079 } 2080 if (tp->t_iflag & IXOFF) { 2081 p = (buf + (DMABUFSZ/2)); 2082 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2083 k = sublen; 2084 while (k--) { 2085 /* Send XON/XOFF out of band. */ 2086 if (*p == tp->t_cc[VSTOP]) { 2087 cx_xflow_ctl (d->chan, 0); 2088 p++; 2089 continue; 2090 } 2091 if (*p == tp->t_cc[VSTART]) { 2092 cx_xflow_ctl (d->chan, 1); 2093 p++; 2094 continue; 2095 } 2096 buf[len] = *p; 2097 len++; 2098 p++; 2099 } 2100 } else { 2101 p = buf; 2102 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2103 } 2104 if (len) { 2105 cx_send_packet (d->chan, buf, len, 0); 2106 tp->t_state |= TS_BUSY; 2107 d->atimeout = 10; 2108 CX_DEBUG2 (d, ("out %d bytes\n", len)); 2109 } 2110 } 2111 ttwwakeup (tp); 2112 CX_UNLOCK (bd); 2113 splx (s); 2114 } 2115 2116 static int cx_param (struct tty *tp, struct termios *t) 2117 { 2118 drv_t *d; 2119 bdrv_t *bd; 2120 int s, bits, parity; 2121 2122 d = tp->t_sc; 2123 bd = d->board->sys; 2124 2125 s = splhigh (); 2126 CX_LOCK (bd); 2127 if (t->c_ospeed == 0) { 2128 /* Clear DTR and RTS. */ 2129 cx_set_dtr (d->chan, 0); 2130 CX_UNLOCK (bd); 2131 splx (s); 2132 CX_DEBUG2 (d, ("cx_param (hangup)\n")); 2133 return 0; 2134 } 2135 CX_DEBUG2 (d, ("cx_param\n")); 2136 2137 /* Check requested parameters. */ 2138 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) { 2139 CX_UNLOCK (bd); 2140 splx (s); 2141 return EINVAL; 2142 } 2143 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) { 2144 CX_UNLOCK (bd); 2145 splx (s); 2146 return EINVAL; 2147 } 2148 2149 /* And copy them to tty and channel structures. */ 2150 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed; 2151 tp->t_cflag = t->c_cflag; 2152 2153 /* Set character length and parity mode. */ 2154 switch (t->c_cflag & CSIZE) { 2155 default: 2156 case CS8: bits = 8; break; 2157 case CS7: bits = 7; break; 2158 case CS6: bits = 6; break; 2159 case CS5: bits = 5; break; 2160 } 2161 2162 parity = ((t->c_cflag & PARENB) ? 1 : 0) * 2163 (1 + ((t->c_cflag & PARODD) ? 0 : 1)); 2164 2165 /* Set current channel number. */ 2166 if (! d->chan->dtr) 2167 cx_set_dtr (d->chan, 1); 2168 2169 ttyldoptim (tp); 2170 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB), 2171 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS), 2172 (t->c_iflag & IXON), (t->c_iflag & IXANY), 2173 t->c_cc[VSTART], t->c_cc[VSTOP]); 2174 CX_UNLOCK (bd); 2175 splx (s); 2176 return 0; 2177 } 2178 2179 /* 2180 * Stop output on a line 2181 */ 2182 static void cx_stop (struct tty *tp, int flag) 2183 { 2184 drv_t *d; 2185 bdrv_t *bd; 2186 int s; 2187 2188 d = tp->t_sc; 2189 bd = d->board->sys; 2190 2191 s = splhigh (); 2192 CX_LOCK (bd); 2193 if (tp->t_state & TS_BUSY) { 2194 /* Stop transmitter */ 2195 CX_DEBUG2 (d, ("cx_stop\n")); 2196 cx_transmitter_ctl (d->chan, 0); 2197 } 2198 CX_UNLOCK (bd); 2199 splx (s); 2200 } 2201 2202 /* 2203 * Process the (delayed) carrier signal setup. 2204 */ 2205 static void cx_carrier (void *arg) 2206 { 2207 drv_t *d = arg; 2208 bdrv_t *bd = d->board->sys; 2209 cx_chan_t *c = d->chan; 2210 int s, cd; 2211 2212 s = splhigh (); 2213 CX_LOCK (bd); 2214 cd = cx_get_cd (c); 2215 if (d->cd != cd) { 2216 if (cd) { 2217 CX_DEBUG (d, ("carrier on\n")); 2218 d->cd = 1; 2219 CX_UNLOCK (bd); 2220 splx (s); 2221 if (d->tty) 2222 ttyld_modem(d->tty, 1); 2223 } else { 2224 CX_DEBUG (d, ("carrier loss\n")); 2225 d->cd = 0; 2226 CX_UNLOCK (bd); 2227 splx (s); 2228 if (d->tty) 2229 ttyld_modem(d->tty, 0); 2230 } 2231 } else { 2232 CX_UNLOCK (bd); 2233 splx (s); 2234 } 2235 } 2236 2237 /* 2238 * Modem signal callback function. 2239 */ 2240 static void cx_modem (cx_chan_t *c) 2241 { 2242 drv_t *d = c->sys; 2243 2244 if (!d || c->mode != M_ASYNC) 2245 return; 2246 /* Handle carrier detect/loss. */ 2247 /* Carrier changed - delay processing DCD for a while 2248 * to give both sides some time to initialize. */ 2249 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d); 2250 } 2251 2252 #ifdef NETGRAPH 2253 static int ng_cx_constructor (node_p node) 2254 { 2255 drv_t *d = NG_NODE_PRIVATE (node); 2256 CX_DEBUG (d, ("Constructor\n")); 2257 return EINVAL; 2258 } 2259 2260 static int ng_cx_newhook (node_p node, hook_p hook, const char *name) 2261 { 2262 int s; 2263 drv_t *d = NG_NODE_PRIVATE (node); 2264 bdrv_t *bd = d->board->sys; 2265 2266 if (d->chan->mode == M_ASYNC) 2267 return EINVAL; 2268 2269 /* Attach debug hook */ 2270 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) { 2271 NG_HOOK_SET_PRIVATE (hook, NULL); 2272 d->debug_hook = hook; 2273 return 0; 2274 } 2275 2276 /* Check for raw hook */ 2277 if (strcmp (name, NG_CX_HOOK_RAW) != 0) 2278 return EINVAL; 2279 2280 NG_HOOK_SET_PRIVATE (hook, d); 2281 d->hook = hook; 2282 s = splhigh (); 2283 CX_LOCK (bd); 2284 cx_up (d); 2285 CX_UNLOCK (bd); 2286 splx (s); 2287 return 0; 2288 } 2289 2290 static int print_modems (char *s, cx_chan_t *c, int need_header) 2291 { 2292 int status = cx_modem_status (c->sys); 2293 int length = 0; 2294 2295 if (need_header) 2296 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n"); 2297 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n", 2298 status & TIOCM_LE ? "On" : "-", 2299 status & TIOCM_DTR ? "On" : "-", 2300 status & TIOCM_DSR ? "On" : "-", 2301 status & TIOCM_RTS ? "On" : "-", 2302 status & TIOCM_CTS ? "On" : "-", 2303 status & TIOCM_CD ? "On" : "-"); 2304 return length; 2305 } 2306 2307 static int print_stats (char *s, cx_chan_t *c, int need_header) 2308 { 2309 int length = 0; 2310 2311 if (need_header) 2312 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n"); 2313 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n", 2314 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts, 2315 c->ierrs, c->obytes, c->opkts, c->oerrs); 2316 return length; 2317 } 2318 2319 static int print_chan (char *s, cx_chan_t *c) 2320 { 2321 drv_t *d = c->sys; 2322 int length = 0; 2323 2324 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num); 2325 if (d->chan->debug) 2326 length += sprintf (s + length, " debug=%d", d->chan->debug); 2327 2328 if (cx_get_baud (c)) 2329 length += sprintf (s + length, " %ld", cx_get_baud (c)); 2330 else 2331 length += sprintf (s + length, " extclock"); 2332 2333 if (c->mode == M_HDLC) { 2334 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off"); 2335 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off"); 2336 } 2337 2338 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n"); 2339 return length; 2340 } 2341 2342 static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook) 2343 { 2344 drv_t *d = NG_NODE_PRIVATE (node); 2345 struct ng_mesg *msg; 2346 struct ng_mesg *resp = NULL; 2347 int error = 0; 2348 2349 if (!d) 2350 return EINVAL; 2351 2352 CX_DEBUG (d, ("Rcvmsg\n")); 2353 NGI_GET_MSG (item, msg); 2354 switch (msg->header.typecookie) { 2355 default: 2356 error = EINVAL; 2357 break; 2358 2359 case NGM_CX_COOKIE: 2360 printf ("Don't forget to implement\n"); 2361 error = EINVAL; 2362 break; 2363 2364 case NGM_GENERIC_COOKIE: 2365 switch (msg->header.cmd) { 2366 default: 2367 error = EINVAL; 2368 break; 2369 2370 case NGM_TEXT_STATUS: { 2371 char *s; 2372 int l = 0; 2373 int dl = sizeof (struct ng_mesg) + 730; 2374 2375 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT); 2376 if (! resp) { 2377 error = ENOMEM; 2378 break; 2379 } 2380 bzero (resp, dl); 2381 s = (resp)->data; 2382 l += print_chan (s + l, d->chan); 2383 l += print_stats (s + l, d->chan, 1); 2384 l += print_modems (s + l, d->chan, 1); 2385 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRSIZ); 2386 } 2387 break; 2388 } 2389 break; 2390 } 2391 NG_RESPOND_MSG (error, node, item, resp); 2392 NG_FREE_MSG (msg); 2393 return error; 2394 } 2395 2396 static int ng_cx_rcvdata (hook_p hook, item_p item) 2397 { 2398 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook)); 2399 struct mbuf *m; 2400 struct ng_tag_prio *ptag; 2401 bdrv_t *bd; 2402 struct ifqueue *q; 2403 int s; 2404 2405 NGI_GET_M (item, m); 2406 NG_FREE_ITEM (item); 2407 if (! NG_HOOK_PRIVATE (hook) || ! d) { 2408 NG_FREE_M (m); 2409 return ENETDOWN; 2410 } 2411 2412 bd = d->board->sys; 2413 /* Check for high priority data */ 2414 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE, 2415 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) ) 2416 q = &d->hi_queue; 2417 else 2418 q = &d->lo_queue; 2419 2420 s = splhigh (); 2421 CX_LOCK (bd); 2422 IF_LOCK (q); 2423 if (_IF_QFULL (q)) { 2424 IF_UNLOCK (q); 2425 CX_UNLOCK (bd); 2426 splx (s); 2427 NG_FREE_M (m); 2428 return ENOBUFS; 2429 } 2430 _IF_ENQUEUE (q, m); 2431 IF_UNLOCK (q); 2432 cx_start (d); 2433 CX_UNLOCK (bd); 2434 splx (s); 2435 return 0; 2436 } 2437 2438 static int ng_cx_rmnode (node_p node) 2439 { 2440 drv_t *d = NG_NODE_PRIVATE (node); 2441 bdrv_t *bd; 2442 2443 CX_DEBUG (d, ("Rmnode\n")); 2444 if (d && d->running) { 2445 int s = splhigh (); 2446 bd = d->board->sys; 2447 CX_LOCK (bd); 2448 cx_down (d); 2449 CX_UNLOCK (bd); 2450 splx (s); 2451 } 2452 #ifdef KLD_MODULE 2453 if (node->nd_flags & NGF_REALLY_DIE) { 2454 NG_NODE_SET_PRIVATE (node, NULL); 2455 NG_NODE_UNREF (node); 2456 } 2457 NG_NODE_REVIVE(node); /* Persistent node */ 2458 #endif 2459 return 0; 2460 } 2461 2462 static int ng_cx_connect (hook_p hook) 2463 { 2464 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2465 2466 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d); 2467 return 0; 2468 } 2469 2470 static int ng_cx_disconnect (hook_p hook) 2471 { 2472 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2473 bdrv_t *bd = d->board->sys; 2474 int s; 2475 2476 s = splhigh (); 2477 CX_LOCK (bd); 2478 if (NG_HOOK_PRIVATE (hook)) 2479 cx_down (d); 2480 CX_UNLOCK (bd); 2481 splx (s); 2482 /* If we were wait it than it reasserted now, just stop it. */ 2483 if (!callout_drain (&d->timeout_handle)) 2484 callout_stop (&d->timeout_handle); 2485 return 0; 2486 } 2487 #endif /*NETGRAPH*/ 2488 2489 static int cx_modevent (module_t mod, int type, void *unused) 2490 { 2491 static int load_count = 0; 2492 2493 switch (type) { 2494 case MOD_LOAD: 2495 #ifdef NETGRAPH 2496 if (ng_newtype (&typestruct)) 2497 printf ("Failed to register ng_cx\n"); 2498 #endif 2499 ++load_count; 2500 2501 callout_init (&timeout_handle, 1); 2502 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 2503 /* Software interrupt. */ 2504 swi_add(&tty_intr_event, "cx", cx_softintr, NULL, SWI_TTY, 2505 INTR_MPSAFE, &cx_fast_ih); 2506 break; 2507 case MOD_UNLOAD: 2508 if (load_count == 1) { 2509 printf ("Removing device entry for Sigma\n"); 2510 #ifdef NETGRAPH 2511 ng_rmtype (&typestruct); 2512 #endif 2513 } 2514 /* If we were wait it than it reasserted now, just stop it. */ 2515 if (!callout_drain (&timeout_handle)) 2516 callout_stop (&timeout_handle); 2517 swi_remove (cx_fast_ih); 2518 --load_count; 2519 break; 2520 case MOD_SHUTDOWN: 2521 break; 2522 } 2523 return 0; 2524 } 2525 2526 #ifdef NETGRAPH 2527 static struct ng_type typestruct = { 2528 .version = NG_ABI_VERSION, 2529 .name = NG_CX_NODE_TYPE, 2530 .constructor = ng_cx_constructor, 2531 .rcvmsg = ng_cx_rcvmsg, 2532 .shutdown = ng_cx_rmnode, 2533 .newhook = ng_cx_newhook, 2534 .connect = ng_cx_connect, 2535 .rcvdata = ng_cx_rcvdata, 2536 .disconnect = ng_cx_disconnect, 2537 }; 2538 #endif /*NETGRAPH*/ 2539 2540 #ifdef NETGRAPH 2541 MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 2542 #else 2543 MODULE_DEPEND (isa_cx, sppp, 1, 1, 1); 2544 #endif 2545 DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL); 2546 MODULE_VERSION (cx, 1);
Cache object: 4242dd37d2f3c9f914feaab7f5f254f3
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