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: releng/11.0/sys/dev/cx/if_cx.c 298955 2016-05-03 03:41:25Z pfg $"); 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 return 0; 875 } 876 877 static int cx_detach (device_t dev) 878 { 879 bdrv_t *bd = device_get_softc (dev); 880 cx_board_t *b = bd->board; 881 cx_chan_t *c; 882 int s; 883 884 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized")); 885 886 s = splhigh (); 887 CX_LOCK (bd); 888 /* Check if the device is busy (open). */ 889 for (c = b->chan; c < b->chan + NCHAN; ++c) { 890 drv_t *d = (drv_t*) c->sys; 891 892 if (!d || d->chan->type == T_NONE) 893 continue; 894 if (d->lock) { 895 CX_UNLOCK (bd); 896 splx (s); 897 return EBUSY; 898 } 899 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 900 (d->open_dev|0x2)) { 901 CX_UNLOCK (bd); 902 splx (s); 903 return EBUSY; 904 } 905 if (d->running) { 906 CX_UNLOCK (bd); 907 splx (s); 908 return EBUSY; 909 } 910 } 911 912 /* Deactivate the timeout routine. And soft interrupt*/ 913 callout_stop (&led_timo[b->num]); 914 915 for (c = b->chan; c < b->chan + NCHAN; ++c) { 916 drv_t *d = c->sys; 917 918 if (!d || d->chan->type == T_NONE) 919 continue; 920 921 callout_stop (&d->dcd_timeout_handle); 922 } 923 CX_UNLOCK (bd); 924 bus_teardown_intr (dev, bd->irq_res, bd->intrhand); 925 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 926 927 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 928 929 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res); 930 931 CX_LOCK (bd); 932 cx_close_board (b); 933 934 /* Detach the interfaces, free buffer memory. */ 935 for (c = b->chan; c < b->chan + NCHAN; ++c) { 936 drv_t *d = (drv_t*) c->sys; 937 938 if (!d || d->chan->type == T_NONE) 939 continue; 940 941 if (d->tty) { 942 ttyfree (d->tty); 943 d->tty = NULL; 944 } 945 946 callout_stop (&d->timeout_handle); 947 #ifdef NETGRAPH 948 if (d->node) { 949 ng_rmnode_self (d->node); 950 NG_NODE_UNREF (d->node); 951 d->node = NULL; 952 } 953 mtx_destroy (&d->lo_queue.ifq_mtx); 954 mtx_destroy (&d->hi_queue.ifq_mtx); 955 #else 956 /* Detach from the packet filter list of interfaces. */ 957 bpfdetach (d->ifp); 958 /* Detach from the sync PPP list. */ 959 sppp_detach (d->ifp); 960 961 if_detach (d->ifp); 962 if_free(d->ifp); 963 /* XXXRIK: check interconnection with irq handler */ 964 IF_DRAIN (&d->queue); 965 mtx_destroy (&d->queue.ifq_mtx); 966 #endif 967 destroy_dev (d->devt); 968 } 969 970 cx_led_off (b); 971 CX_UNLOCK (bd); 972 callout_drain (&led_timo[b->num]); 973 for (c = b->chan; c < b->chan + NCHAN; ++c) { 974 drv_t *d = c->sys; 975 976 if (!d || d->chan->type == T_NONE) 977 continue; 978 979 callout_drain (&d->dcd_timeout_handle); 980 callout_drain (&d->timeout_handle); 981 } 982 splx (s); 983 984 s = splhigh (); 985 for (c = b->chan; c < b->chan + NCHAN; ++c) { 986 drv_t *d = (drv_t*) c->sys; 987 988 if (!d || d->chan->type == T_NONE) 989 continue; 990 991 /* Deallocate buffers. */ 992 cx_bus_dma_mem_free (&d->dmamem); 993 } 994 bd->board = 0; 995 adapter [b->num] = 0; 996 free (b, M_DEVBUF); 997 splx (s); 998 999 mtx_destroy (&bd->cx_mtx); 1000 1001 return 0; 1002 } 1003 1004 #ifndef NETGRAPH 1005 static void cx_ifstart (struct ifnet *ifp) 1006 { 1007 drv_t *d = ifp->if_softc; 1008 bdrv_t *bd = d->board->sys; 1009 1010 CX_LOCK (bd); 1011 cx_start (d); 1012 CX_UNLOCK (bd); 1013 } 1014 1015 static void cx_tlf (struct sppp *sp) 1016 { 1017 drv_t *d = SP2IFP(sp)->if_softc; 1018 1019 CX_DEBUG (d, ("cx_tlf\n")); 1020 /* cx_set_dtr (d->chan, 0);*/ 1021 /* cx_set_rts (d->chan, 0);*/ 1022 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1023 sp->pp_down (sp); 1024 } 1025 1026 static void cx_tls (struct sppp *sp) 1027 { 1028 drv_t *d = SP2IFP(sp)->if_softc; 1029 1030 CX_DEBUG (d, ("cx_tls\n")); 1031 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1032 sp->pp_up (sp); 1033 } 1034 1035 /* 1036 * Initialization of interface. 1037 * It seems to be never called by upper level. 1038 */ 1039 static void cx_initialize (void *softc) 1040 { 1041 drv_t *d = softc; 1042 1043 CX_DEBUG (d, ("cx_initialize\n")); 1044 } 1045 1046 /* 1047 * Process an ioctl request. 1048 */ 1049 static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data) 1050 { 1051 drv_t *d = ifp->if_softc; 1052 bdrv_t *bd = d->board->sys; 1053 int error, s, was_up, should_be_up; 1054 1055 /* No socket ioctls while the channel is in async mode. */ 1056 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC) 1057 return EBUSY; 1058 1059 /* Socket ioctls on slave subchannels are not allowed. */ 1060 was_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1061 error = sppp_ioctl (ifp, cmd, data); 1062 if (error) 1063 return error; 1064 1065 s = splhigh (); 1066 CX_LOCK (bd); 1067 if (! (ifp->if_flags & IFF_DEBUG)) 1068 d->chan->debug = 0; 1069 else 1070 d->chan->debug = d->chan->debug_shadow; 1071 CX_UNLOCK (bd); 1072 splx (s); 1073 1074 switch (cmd) { 1075 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0; 1076 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0; 1077 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0; 1078 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break; 1079 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break; 1080 } 1081 1082 /* We get here only in case of SIFFLAGS or SIFADDR. */ 1083 s = splhigh (); 1084 CX_LOCK (bd); 1085 should_be_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1086 if (!was_up && should_be_up) { 1087 /* Interface goes up -- start it. */ 1088 cx_up (d); 1089 cx_start (d); 1090 } else if (was_up && !should_be_up) { 1091 /* Interface is going down -- stop it. */ 1092 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/ 1093 cx_down (d); 1094 } 1095 CX_UNLOCK (bd); 1096 splx (s); 1097 return 0; 1098 } 1099 #endif /*NETGRAPH*/ 1100 1101 /* 1102 * Stop the interface. Called on splimp(). 1103 */ 1104 static void cx_down (drv_t *d) 1105 { 1106 int s = splhigh (); 1107 CX_DEBUG (d, ("cx_down\n")); 1108 cx_set_dtr (d->chan, 0); 1109 cx_set_rts (d->chan, 0); 1110 d->running = 0; 1111 callout_stop (&d->timeout_handle); 1112 splx (s); 1113 } 1114 1115 /* 1116 * Start the interface. Called on splimp(). 1117 */ 1118 static void cx_up (drv_t *d) 1119 { 1120 int s = splhigh (); 1121 CX_DEBUG (d, ("cx_up\n")); 1122 cx_set_dtr (d->chan, 1); 1123 cx_set_rts (d->chan, 1); 1124 d->running = 1; 1125 splx (s); 1126 } 1127 1128 /* 1129 * Start output on the (slave) interface. Get another datagram to send 1130 * off of the interface queue, and copy it to the interface 1131 * before starting the output. 1132 */ 1133 static void cx_send (drv_t *d) 1134 { 1135 struct mbuf *m; 1136 u_short len; 1137 1138 CX_DEBUG2 (d, ("cx_send\n")); 1139 1140 /* No output if the interface is down. */ 1141 if (! d->running) 1142 return; 1143 1144 /* No output if the modem is off. */ 1145 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan)) 1146 return; 1147 1148 if (cx_buf_free (d->chan)) { 1149 /* Get the packet to send. */ 1150 #ifdef NETGRAPH 1151 IF_DEQUEUE (&d->hi_queue, m); 1152 if (! m) 1153 IF_DEQUEUE (&d->lo_queue, m); 1154 #else 1155 m = sppp_dequeue (d->ifp); 1156 #endif 1157 if (! m) 1158 return; 1159 #ifndef NETGRAPH 1160 BPF_MTAP (d->ifp, m); 1161 #endif 1162 len = m_length (m, NULL); 1163 if (! m->m_next) 1164 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t), 1165 len, 0); 1166 else { 1167 u_char buf [DMABUFSZ]; 1168 m_copydata (m, 0, len, buf); 1169 cx_send_packet (d->chan, buf, len, 0); 1170 } 1171 m_freem (m); 1172 1173 /* Set up transmit timeout, 10 seconds. */ 1174 d->timeout = 10; 1175 } 1176 #ifndef NETGRAPH 1177 d->ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1178 #endif 1179 } 1180 1181 /* 1182 * Start output on the interface. 1183 * Always called on splimp(). 1184 */ 1185 static void cx_start (drv_t *d) 1186 { 1187 int s = splhigh (); 1188 if (d->running) { 1189 if (! d->chan->dtr) 1190 cx_set_dtr (d->chan, 1); 1191 if (! d->chan->rts) 1192 cx_set_rts (d->chan, 1); 1193 cx_send (d); 1194 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d); 1195 } 1196 splx (s); 1197 } 1198 1199 /* 1200 * Handle transmit timeouts. 1201 * Recover after lost transmit interrupts. 1202 * Always called on splimp(). 1203 */ 1204 static void cx_watchdog (drv_t *d) 1205 { 1206 1207 CX_DEBUG (d, ("device timeout\n")); 1208 if (d->running) { 1209 cx_setup_chan (d->chan); 1210 cx_start_chan (d->chan, 0, 0); 1211 cx_set_dtr (d->chan, 1); 1212 cx_set_rts (d->chan, 1); 1213 cx_start (d); 1214 } 1215 } 1216 1217 static void cx_watchdog_timer (void *arg) 1218 { 1219 drv_t *d = arg; 1220 bdrv_t *bd = d->board->sys; 1221 1222 CX_LOCK (bd); 1223 if (d->timeout == 1) 1224 cx_watchdog (d); 1225 if (d->timeout) 1226 d->timeout--; 1227 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d); 1228 CX_UNLOCK (bd); 1229 } 1230 1231 /* 1232 * Transmit callback function. 1233 */ 1234 static void cx_transmit (cx_chan_t *c, void *attachment, int len) 1235 { 1236 drv_t *d = c->sys; 1237 1238 if (!d) 1239 return; 1240 1241 if (c->mode == M_ASYNC && d->tty) { 1242 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH); 1243 d->atimeout = 0; 1244 if (d->tty->t_dev) { 1245 d->intr_action |= CX_WRITE; 1246 MY_SOFT_INTR = 1; 1247 swi_sched (cx_fast_ih, 0); 1248 } 1249 return; 1250 } 1251 d->timeout = 0; 1252 #ifndef NETGRAPH 1253 if_inc_counter(d->ifp, IFCOUNTER_OPACKETS, 1); 1254 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1255 #endif 1256 cx_start (d); 1257 } 1258 1259 /* 1260 * Process the received packet. 1261 */ 1262 static void cx_receive (cx_chan_t *c, char *data, int len) 1263 { 1264 drv_t *d = c->sys; 1265 struct mbuf *m; 1266 char *cc = data; 1267 #ifdef NETGRAPH 1268 int error; 1269 #endif 1270 1271 if (!d) 1272 return; 1273 1274 if (c->mode == M_ASYNC && d->tty) { 1275 if (d->tty->t_state & TS_ISOPEN) { 1276 async_q *q = &d->aqueue; 1277 int size = BF_SZ - 1 - AQ_GSZ (q); 1278 1279 if (len <= 0 && !size) 1280 return; 1281 1282 if (len > size) { 1283 c->ierrs++; 1284 cx_error (c, CX_OVERRUN); 1285 len = size - 1; 1286 } 1287 1288 while (len--) { 1289 AQ_PUSH (q, *(unsigned char *)cc); 1290 cc++; 1291 } 1292 1293 d->intr_action |= CX_READ; 1294 MY_SOFT_INTR = 1; 1295 swi_sched (cx_fast_ih, 0); 1296 } 1297 return; 1298 } 1299 if (! d->running) 1300 return; 1301 1302 m = makembuf (data, len); 1303 if (! m) { 1304 CX_DEBUG (d, ("no memory for packet\n")); 1305 #ifndef NETGRAPH 1306 if_inc_counter(d->ifp, IFCOUNTER_IQDROPS, 1); 1307 #endif 1308 return; 1309 } 1310 if (c->debug > 1) 1311 m_print (m, 0); 1312 #ifdef NETGRAPH 1313 m->m_pkthdr.rcvif = 0; 1314 NG_SEND_DATA_ONLY (error, d->hook, m); 1315 #else 1316 if_inc_counter(d->ifp, IFCOUNTER_IPACKETS, 1); 1317 m->m_pkthdr.rcvif = d->ifp; 1318 /* Check if there's a BPF listener on this interface. 1319 * If so, hand off the raw packet to bpf. */ 1320 BPF_MTAP(d->ifp, m); 1321 IF_ENQUEUE (&d->queue, m); 1322 #endif 1323 } 1324 1325 #define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\ 1326 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\ 1327 && (!(tp->t_iflag & PARMRK)\ 1328 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\ 1329 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\ 1330 && linesw[tp->t_line]->l_rint == ttyinput) 1331 1332 /* 1333 * Error callback function. 1334 */ 1335 static void cx_error (cx_chan_t *c, int data) 1336 { 1337 drv_t *d = c->sys; 1338 async_q *q; 1339 1340 if (!d) 1341 return; 1342 1343 q = &(d->aqueue); 1344 1345 switch (data) { 1346 case CX_FRAME: 1347 CX_DEBUG (d, ("frame error\n")); 1348 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1349 && (AQ_GSZ (q) < BF_SZ - 1) 1350 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1351 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1352 AQ_PUSH (q, TTY_FE); 1353 d->intr_action |= CX_READ; 1354 MY_SOFT_INTR = 1; 1355 swi_sched (cx_fast_ih, 0); 1356 } 1357 #ifndef NETGRAPH 1358 else 1359 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1); 1360 #endif 1361 break; 1362 case CX_CRC: 1363 CX_DEBUG (d, ("crc error\n")); 1364 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1365 && (AQ_GSZ (q) < BF_SZ - 1) 1366 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1367 || !(d->tty->t_iflag & INPCK) 1368 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1369 AQ_PUSH (q, TTY_PE); 1370 d->intr_action |= CX_READ; 1371 MY_SOFT_INTR = 1; 1372 swi_sched (cx_fast_ih, 0); 1373 } 1374 #ifndef NETGRAPH 1375 else 1376 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1); 1377 #endif 1378 break; 1379 case CX_OVERRUN: 1380 CX_DEBUG (d, ("overrun error\n")); 1381 #ifdef TTY_OE 1382 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1383 && (AQ_GSZ (q) < BF_SZ - 1) 1384 && (!CONDITION((&d->tty->t_termios), (d->tty)))) { 1385 AQ_PUSH (q, TTY_OE); 1386 d->intr_action |= CX_READ; 1387 MY_SOFT_INTR = 1; 1388 swi_sched (cx_fast_ih, 0); 1389 } 1390 #endif 1391 #ifndef NETGRAPH 1392 else { 1393 if_inc_counter(d->ifp, IFCOUNTER_COLLISIONS, 1); 1394 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1); 1395 } 1396 #endif 1397 break; 1398 case CX_OVERFLOW: 1399 CX_DEBUG (d, ("overflow error\n")); 1400 #ifndef NETGRAPH 1401 if (c->mode != M_ASYNC) 1402 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1); 1403 #endif 1404 break; 1405 case CX_UNDERRUN: 1406 CX_DEBUG (d, ("underrun error\n")); 1407 if (c->mode != M_ASYNC) { 1408 d->timeout = 0; 1409 #ifndef NETGRAPH 1410 if_inc_counter(d->ifp, IFCOUNTER_OERRORS, 1); 1411 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1412 #endif 1413 cx_start (d); 1414 } 1415 break; 1416 case CX_BREAK: 1417 CX_DEBUG (d, ("break error\n")); 1418 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1419 && (AQ_GSZ (q) < BF_SZ - 1) 1420 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1421 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) { 1422 AQ_PUSH (q, TTY_BI); 1423 d->intr_action |= CX_READ; 1424 MY_SOFT_INTR = 1; 1425 swi_sched (cx_fast_ih, 0); 1426 } 1427 #ifndef NETGRAPH 1428 else 1429 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1); 1430 #endif 1431 break; 1432 default: 1433 CX_DEBUG (d, ("error #%d\n", data)); 1434 } 1435 } 1436 1437 static int cx_topen (struct tty *tp, struct cdev *dev) 1438 { 1439 bdrv_t *bd; 1440 drv_t *d; 1441 1442 d = tp->t_sc; 1443 CX_DEBUG2 (d, ("cx_open (serial)\n")); 1444 1445 bd = d->board->sys; 1446 1447 if (d->chan->mode != M_ASYNC) 1448 return (EBUSY); 1449 1450 d->open_dev |= 0x2; 1451 CX_LOCK (bd); 1452 cx_start_chan (d->chan, 0, 0); 1453 cx_set_dtr (d->chan, 1); 1454 cx_set_rts (d->chan, 1); 1455 d->cd = cx_get_cd (d->chan); 1456 CX_UNLOCK (bd); 1457 1458 CX_DEBUG2 (d, ("cx_open done\n")); 1459 1460 return 0; 1461 } 1462 1463 static void cx_tclose (struct tty *tp) 1464 { 1465 drv_t *d; 1466 bdrv_t *bd; 1467 1468 d = tp->t_sc; 1469 CX_DEBUG2 (d, ("cx_close\n")); 1470 bd = d->board->sys; 1471 CX_LOCK (bd); 1472 /* Disable receiver. 1473 * Transmitter continues sending the queued data. */ 1474 cx_enable_receive (d->chan, 0); 1475 CX_UNLOCK (bd); 1476 d->open_dev &= ~0x2; 1477 } 1478 1479 static int cx_tmodem (struct tty *tp, int sigon, int sigoff) 1480 { 1481 drv_t *d; 1482 bdrv_t *bd; 1483 1484 d = tp->t_sc; 1485 bd = d->board->sys; 1486 1487 CX_LOCK (bd); 1488 if (!sigon && !sigoff) { 1489 if (cx_get_dsr (d->chan)) sigon |= SER_DSR; 1490 if (cx_get_cd (d->chan)) sigon |= SER_DCD; 1491 if (cx_get_cts (d->chan)) sigon |= SER_CTS; 1492 if (d->chan->dtr) sigon |= SER_DTR; 1493 if (d->chan->rts) sigon |= SER_RTS; 1494 CX_UNLOCK (bd); 1495 return sigon; 1496 } 1497 1498 if (sigon & SER_DTR) 1499 cx_set_dtr (d->chan, 1); 1500 if (sigoff & SER_DTR) 1501 cx_set_dtr (d->chan, 0); 1502 if (sigon & SER_RTS) 1503 cx_set_rts (d->chan, 1); 1504 if (sigoff & SER_RTS) 1505 cx_set_rts (d->chan, 0); 1506 CX_UNLOCK (bd); 1507 1508 return (0); 1509 } 1510 1511 static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td) 1512 { 1513 int unit; 1514 drv_t *d; 1515 1516 d = dev->si_drv1; 1517 unit = d->chan->num; 1518 1519 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n", 1520 unit, flag, mode)); 1521 1522 d->open_dev |= 0x1; 1523 1524 CX_DEBUG2 (d, ("cx_open done\n")); 1525 1526 return 0; 1527 } 1528 1529 static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td) 1530 { 1531 drv_t *d; 1532 1533 d = dev->si_drv1; 1534 CX_DEBUG2 (d, ("cx_close\n")); 1535 d->open_dev &= ~0x1; 1536 return 0; 1537 } 1538 1539 static int cx_modem_status (drv_t *d) 1540 { 1541 bdrv_t *bd = d->board->sys; 1542 int status = 0, s = splhigh (); 1543 CX_LOCK (bd); 1544 /* Already opened by someone or network interface is up? */ 1545 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1546 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running)) 1547 status = TIOCM_LE; /* always enabled while open */ 1548 1549 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR; 1550 if (cx_get_cd (d->chan)) status |= TIOCM_CD; 1551 if (cx_get_cts (d->chan)) status |= TIOCM_CTS; 1552 if (d->chan->dtr) status |= TIOCM_DTR; 1553 if (d->chan->rts) status |= TIOCM_RTS; 1554 CX_UNLOCK (bd); 1555 splx (s); 1556 return status; 1557 } 1558 1559 static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1560 { 1561 drv_t *d; 1562 bdrv_t *bd; 1563 cx_chan_t *c; 1564 struct serial_statistics *st; 1565 int error, s; 1566 char mask[16]; 1567 1568 d = dev->si_drv1; 1569 c = d->chan; 1570 1571 bd = d->board->sys; 1572 1573 switch (cmd) { 1574 case SERIAL_GETREGISTERED: 1575 CX_DEBUG2 (d, ("ioctl: getregistered\n")); 1576 bzero (mask, sizeof(mask)); 1577 for (s=0; s<NCX*NCHAN; ++s) 1578 if (channel [s]) 1579 mask [s/8] |= 1 << (s & 7); 1580 bcopy (mask, data, sizeof (mask)); 1581 return 0; 1582 1583 case SERIAL_GETPORT: 1584 CX_DEBUG2 (d, ("ioctl: getport\n")); 1585 s = splhigh (); 1586 CX_LOCK (bd); 1587 *(int *)data = cx_get_port (c); 1588 CX_UNLOCK (bd); 1589 splx (s); 1590 if (*(int *)data<0) 1591 return (EINVAL); 1592 else 1593 return 0; 1594 1595 case SERIAL_SETPORT: 1596 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1597 /* Only for superuser! */ 1598 error = priv_check (td, PRIV_DRIVER); 1599 if (error) 1600 return error; 1601 1602 s = splhigh (); 1603 CX_LOCK (bd); 1604 cx_set_port (c, *(int *)data); 1605 CX_UNLOCK (bd); 1606 splx (s); 1607 return 0; 1608 1609 #ifndef NETGRAPH 1610 case SERIAL_GETPROTO: 1611 CX_DEBUG2 (d, ("ioctl: getproto\n")); 1612 s = splhigh (); 1613 CX_LOCK (bd); 1614 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" : 1615 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" : 1616 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp"); 1617 CX_UNLOCK (bd); 1618 splx (s); 1619 return 0; 1620 1621 case SERIAL_SETPROTO: 1622 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1623 /* Only for superuser! */ 1624 error = priv_check (td, PRIV_DRIVER); 1625 if (error) 1626 return error; 1627 if (c->mode == M_ASYNC) 1628 return EBUSY; 1629 if (d->ifp->if_drv_flags & IFF_DRV_RUNNING) 1630 return EBUSY; 1631 if (! strcmp ("cisco", (char*)data)) { 1632 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR); 1633 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1634 d->ifp->if_flags |= PP_CISCO; 1635 } else if (! strcmp ("fr", (char*)data)) { 1636 d->ifp->if_flags &= ~(PP_CISCO); 1637 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE; 1638 } else if (! strcmp ("ppp", (char*)data)) { 1639 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE); 1640 d->ifp->if_flags &= ~(PP_CISCO); 1641 } else 1642 return EINVAL; 1643 return 0; 1644 1645 case SERIAL_GETKEEPALIVE: 1646 CX_DEBUG2 (d, ("ioctl: getkeepalive\n")); 1647 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1648 (d->ifp->if_flags & PP_CISCO) || 1649 (c->mode == M_ASYNC)) 1650 return EINVAL; 1651 s = splhigh (); 1652 CX_LOCK (bd); 1653 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0; 1654 CX_UNLOCK (bd); 1655 splx (s); 1656 return 0; 1657 1658 case SERIAL_SETKEEPALIVE: 1659 CX_DEBUG2 (d, ("ioctl: setkeepalive\n")); 1660 /* Only for superuser! */ 1661 error = priv_check (td, PRIV_DRIVER); 1662 if (error) 1663 return error; 1664 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1665 (d->ifp->if_flags & PP_CISCO)) 1666 return EINVAL; 1667 s = splhigh (); 1668 CX_LOCK (bd); 1669 if (*(int*)data) 1670 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1671 else 1672 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE; 1673 CX_UNLOCK (bd); 1674 splx (s); 1675 return 0; 1676 #endif /*NETGRAPH*/ 1677 1678 case SERIAL_GETMODE: 1679 CX_DEBUG2 (d, ("ioctl: getmode\n")); 1680 s = splhigh (); 1681 CX_LOCK (bd); 1682 *(int*)data = (c->mode == M_ASYNC) ? 1683 SERIAL_ASYNC : SERIAL_HDLC; 1684 CX_UNLOCK (bd); 1685 splx (s); 1686 return 0; 1687 1688 case SERIAL_SETMODE: 1689 CX_DEBUG2 (d, ("ioctl: setmode\n")); 1690 /* Only for superuser! */ 1691 error = priv_check (td, PRIV_DRIVER); 1692 if (error) 1693 return error; 1694 1695 /* Somebody is waiting for carrier? */ 1696 if (d->lock) 1697 return EBUSY; 1698 /* /dev/ttyXX is already opened by someone? */ 1699 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1700 (d->open_dev|0x2)) 1701 return EBUSY; 1702 /* Network interface is up? 1703 * Cannot change to async mode. */ 1704 if (c->mode != M_ASYNC && d->running && 1705 (*(int*)data == SERIAL_ASYNC)) 1706 return EBUSY; 1707 1708 s = splhigh (); 1709 CX_LOCK (bd); 1710 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) { 1711 cx_set_mode (c, M_ASYNC); 1712 cx_enable_receive (c, 0); 1713 cx_enable_transmit (c, 0); 1714 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) { 1715 if (d->ifp->if_flags & IFF_DEBUG) 1716 c->debug = c->debug_shadow; 1717 cx_set_mode (c, M_HDLC); 1718 cx_enable_receive (c, 1); 1719 cx_enable_transmit (c, 1); 1720 } 1721 CX_UNLOCK (bd); 1722 splx (s); 1723 return 0; 1724 1725 case SERIAL_GETSTAT: 1726 CX_DEBUG2 (d, ("ioctl: getestat\n")); 1727 st = (struct serial_statistics*) data; 1728 s = splhigh (); 1729 CX_LOCK (bd); 1730 st->rintr = c->rintr; 1731 st->tintr = c->tintr; 1732 st->mintr = c->mintr; 1733 st->ibytes = c->ibytes; 1734 st->ipkts = c->ipkts; 1735 st->ierrs = c->ierrs; 1736 st->obytes = c->obytes; 1737 st->opkts = c->opkts; 1738 st->oerrs = c->oerrs; 1739 CX_UNLOCK (bd); 1740 splx (s); 1741 return 0; 1742 1743 case SERIAL_CLRSTAT: 1744 CX_DEBUG2 (d, ("ioctl: clrstat\n")); 1745 /* Only for superuser! */ 1746 error = priv_check (td, PRIV_DRIVER); 1747 if (error) 1748 return error; 1749 s = splhigh (); 1750 CX_LOCK (bd); 1751 c->rintr = 0; 1752 c->tintr = 0; 1753 c->mintr = 0; 1754 c->ibytes = 0; 1755 c->ipkts = 0; 1756 c->ierrs = 0; 1757 c->obytes = 0; 1758 c->opkts = 0; 1759 c->oerrs = 0; 1760 CX_UNLOCK (bd); 1761 splx (s); 1762 return 0; 1763 1764 case SERIAL_GETBAUD: 1765 CX_DEBUG2 (d, ("ioctl: getbaud\n")); 1766 if (c->mode == M_ASYNC) 1767 return EINVAL; 1768 s = splhigh (); 1769 CX_LOCK (bd); 1770 *(long*)data = cx_get_baud(c); 1771 CX_UNLOCK (bd); 1772 splx (s); 1773 return 0; 1774 1775 case SERIAL_SETBAUD: 1776 CX_DEBUG2 (d, ("ioctl: setbaud\n")); 1777 /* Only for superuser! */ 1778 error = priv_check (td, PRIV_DRIVER); 1779 if (error) 1780 return error; 1781 if (c->mode == M_ASYNC) 1782 return EINVAL; 1783 s = splhigh (); 1784 CX_LOCK (bd); 1785 cx_set_baud (c, *(long*)data); 1786 CX_UNLOCK (bd); 1787 splx (s); 1788 return 0; 1789 1790 case SERIAL_GETLOOP: 1791 CX_DEBUG2 (d, ("ioctl: getloop\n")); 1792 if (c->mode == M_ASYNC) 1793 return EINVAL; 1794 s = splhigh (); 1795 CX_LOCK (bd); 1796 *(int*)data = cx_get_loop (c); 1797 CX_UNLOCK (bd); 1798 splx (s); 1799 return 0; 1800 1801 case SERIAL_SETLOOP: 1802 CX_DEBUG2 (d, ("ioctl: setloop\n")); 1803 /* Only for superuser! */ 1804 error = priv_check (td, PRIV_DRIVER); 1805 if (error) 1806 return error; 1807 if (c->mode == M_ASYNC) 1808 return EINVAL; 1809 s = splhigh (); 1810 CX_LOCK (bd); 1811 cx_set_loop (c, *(int*)data); 1812 CX_UNLOCK (bd); 1813 splx (s); 1814 return 0; 1815 1816 case SERIAL_GETDPLL: 1817 CX_DEBUG2 (d, ("ioctl: getdpll\n")); 1818 if (c->mode == M_ASYNC) 1819 return EINVAL; 1820 s = splhigh (); 1821 CX_LOCK (bd); 1822 *(int*)data = cx_get_dpll (c); 1823 CX_UNLOCK (bd); 1824 splx (s); 1825 return 0; 1826 1827 case SERIAL_SETDPLL: 1828 CX_DEBUG2 (d, ("ioctl: setdpll\n")); 1829 /* Only for superuser! */ 1830 error = priv_check (td, PRIV_DRIVER); 1831 if (error) 1832 return error; 1833 if (c->mode == M_ASYNC) 1834 return EINVAL; 1835 s = splhigh (); 1836 CX_LOCK (bd); 1837 cx_set_dpll (c, *(int*)data); 1838 CX_UNLOCK (bd); 1839 splx (s); 1840 return 0; 1841 1842 case SERIAL_GETNRZI: 1843 CX_DEBUG2 (d, ("ioctl: getnrzi\n")); 1844 if (c->mode == M_ASYNC) 1845 return EINVAL; 1846 s = splhigh (); 1847 CX_LOCK (bd); 1848 *(int*)data = cx_get_nrzi (c); 1849 CX_UNLOCK (bd); 1850 splx (s); 1851 return 0; 1852 1853 case SERIAL_SETNRZI: 1854 CX_DEBUG2 (d, ("ioctl: setnrzi\n")); 1855 /* Only for superuser! */ 1856 error = priv_check (td, PRIV_DRIVER); 1857 if (error) 1858 return error; 1859 if (c->mode == M_ASYNC) 1860 return EINVAL; 1861 s = splhigh (); 1862 CX_LOCK (bd); 1863 cx_set_nrzi (c, *(int*)data); 1864 CX_UNLOCK (bd); 1865 splx (s); 1866 return 0; 1867 1868 case SERIAL_GETDEBUG: 1869 CX_DEBUG2 (d, ("ioctl: getdebug\n")); 1870 s = splhigh (); 1871 CX_LOCK (bd); 1872 *(int*)data = c->debug; 1873 CX_UNLOCK (bd); 1874 splx (s); 1875 return 0; 1876 1877 case SERIAL_SETDEBUG: 1878 CX_DEBUG2 (d, ("ioctl: setdebug\n")); 1879 /* Only for superuser! */ 1880 error = priv_check (td, PRIV_DRIVER); 1881 if (error) 1882 return error; 1883 s = splhigh (); 1884 CX_LOCK (bd); 1885 #ifndef NETGRAPH 1886 if (c->mode == M_ASYNC) { 1887 c->debug = *(int*)data; 1888 } else { 1889 /* 1890 * The debug_shadow is always greater than zero for 1891 * logic simplicity. For switching debug off the 1892 * IFF_DEBUG is responsible (for !M_ASYNC mode). 1893 */ 1894 c->debug_shadow = (*(int*)data) ? (*(int*)data) : 1; 1895 if (d->ifp->if_flags & IFF_DEBUG) 1896 c->debug = c->debug_shadow; 1897 } 1898 #else 1899 c->debug = *(int*)data; 1900 #endif 1901 CX_UNLOCK (bd); 1902 splx (s); 1903 return 0; 1904 } 1905 1906 switch (cmd) { 1907 case TIOCSDTR: /* Set DTR */ 1908 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n")); 1909 s = splhigh (); 1910 CX_LOCK (bd); 1911 cx_set_dtr (c, 1); 1912 CX_UNLOCK (bd); 1913 splx (s); 1914 return 0; 1915 1916 case TIOCCDTR: /* Clear DTR */ 1917 CX_DEBUG2 (d, ("ioctl: tioccdtr\n")); 1918 s = splhigh (); 1919 CX_LOCK (bd); 1920 cx_set_dtr (c, 0); 1921 CX_UNLOCK (bd); 1922 splx (s); 1923 return 0; 1924 1925 case TIOCMSET: /* Set DTR/RTS */ 1926 CX_DEBUG2 (d, ("ioctl: tiocmset\n")); 1927 s = splhigh (); 1928 CX_LOCK (bd); 1929 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0); 1930 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0); 1931 CX_UNLOCK (bd); 1932 splx (s); 1933 return 0; 1934 1935 case TIOCMBIS: /* Add DTR/RTS */ 1936 CX_DEBUG2 (d, ("ioctl: tiocmbis\n")); 1937 s = splhigh (); 1938 CX_LOCK (bd); 1939 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1); 1940 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1); 1941 CX_UNLOCK (bd); 1942 splx (s); 1943 return 0; 1944 1945 case TIOCMBIC: /* Clear DTR/RTS */ 1946 CX_DEBUG2 (d, ("ioctl: tiocmbic\n")); 1947 s = splhigh (); 1948 CX_LOCK (bd); 1949 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0); 1950 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0); 1951 CX_UNLOCK (bd); 1952 splx (s); 1953 return 0; 1954 1955 case TIOCMGET: /* Get modem status */ 1956 CX_DEBUG2 (d, ("ioctl: tiocmget\n")); 1957 *(int*)data = cx_modem_status (d); 1958 return 0; 1959 1960 } 1961 1962 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd)); 1963 return ENOTTY; 1964 } 1965 1966 void cx_softintr (void *unused) 1967 { 1968 drv_t *d; 1969 bdrv_t *bd; 1970 async_q *q; 1971 int i, s, ic, k; 1972 while (MY_SOFT_INTR) { 1973 MY_SOFT_INTR = 0; 1974 for (i=0; i<NCX*NCHAN; ++i) { 1975 d = channel [i]; 1976 if (!d || !d->chan || d->chan->type == T_NONE 1977 || d->chan->mode != M_ASYNC || !d->tty 1978 || !d->tty->t_dev) 1979 continue; 1980 bd = d->board->sys; 1981 s = splhigh (); 1982 CX_LOCK (bd); 1983 if (d->intr_action & CX_READ) { 1984 q = &(d->aqueue); 1985 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) { 1986 k = AQ_GSZ(q); 1987 if (d->tty->t_rawq.c_cc + k > 1988 d->tty->t_ihiwat 1989 && (d->tty->t_cflag & CRTS_IFLOW 1990 || d->tty->t_iflag & IXOFF) 1991 && !(d->tty->t_state & TS_TBLOCK)) 1992 ttyblock(d->tty); 1993 d->tty->t_rawcc += k; 1994 while (k>0) { 1995 k--; 1996 AQ_POP (q, ic); 1997 CX_UNLOCK (bd); 1998 splx (s); 1999 putc (ic, &d->tty->t_rawq); 2000 s = splhigh (); 2001 CX_LOCK (bd); 2002 } 2003 ttwakeup(d->tty); 2004 if (d->tty->t_state & TS_TTSTOP 2005 && (d->tty->t_iflag & IXANY 2006 || d->tty->t_cc[VSTART] == 2007 d->tty->t_cc[VSTOP])) { 2008 d->tty->t_state &= ~TS_TTSTOP; 2009 d->tty->t_lflag &= ~FLUSHO; 2010 d->intr_action |= CX_WRITE; 2011 } 2012 } else { 2013 while (q->end != q->beg) { 2014 AQ_POP (q, ic); 2015 CX_UNLOCK (bd); 2016 splx (s); 2017 ttyld_rint (d->tty, ic); 2018 s = splhigh (); 2019 CX_LOCK (bd); 2020 } 2021 } 2022 d->intr_action &= ~CX_READ; 2023 } 2024 splx (s); 2025 CX_UNLOCK (bd); 2026 2027 s = splhigh (); 2028 CX_LOCK (bd); 2029 if (d->intr_action & CX_WRITE) { 2030 if (d->tty->t_line) 2031 ttyld_start (d->tty); 2032 else 2033 cx_oproc (d->tty); 2034 d->intr_action &= ~CX_WRITE; 2035 } 2036 CX_UNLOCK (bd); 2037 splx (s); 2038 2039 } 2040 } 2041 } 2042 2043 /* 2044 * Fill transmitter buffer with data. 2045 */ 2046 static void cx_oproc (struct tty *tp) 2047 { 2048 int s, k; 2049 drv_t *d; 2050 bdrv_t *bd; 2051 static u_char buf[DMABUFSZ]; 2052 u_char *p; 2053 u_short len = 0, sublen = 0; 2054 2055 d = tp->t_sc; 2056 bd = d->board->sys; 2057 2058 CX_DEBUG2 (d, ("cx_oproc\n")); 2059 2060 s = splhigh (); 2061 CX_LOCK (bd); 2062 2063 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts) 2064 cx_set_rts (d->chan, 0); 2065 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts) 2066 cx_set_rts (d->chan, 1); 2067 2068 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) { 2069 /* Start transmitter. */ 2070 cx_enable_transmit (d->chan, 1); 2071 2072 /* Is it busy? */ 2073 if (! cx_buf_free (d->chan)) { 2074 tp->t_state |= TS_BUSY; 2075 CX_UNLOCK (bd); 2076 splx (s); 2077 return; 2078 } 2079 if (tp->t_iflag & IXOFF) { 2080 p = (buf + (DMABUFSZ/2)); 2081 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2082 k = sublen; 2083 while (k--) { 2084 /* Send XON/XOFF out of band. */ 2085 if (*p == tp->t_cc[VSTOP]) { 2086 cx_xflow_ctl (d->chan, 0); 2087 p++; 2088 continue; 2089 } 2090 if (*p == tp->t_cc[VSTART]) { 2091 cx_xflow_ctl (d->chan, 1); 2092 p++; 2093 continue; 2094 } 2095 buf[len] = *p; 2096 len++; 2097 p++; 2098 } 2099 } else { 2100 p = buf; 2101 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2102 } 2103 if (len) { 2104 cx_send_packet (d->chan, buf, len, 0); 2105 tp->t_state |= TS_BUSY; 2106 d->atimeout = 10; 2107 CX_DEBUG2 (d, ("out %d bytes\n", len)); 2108 } 2109 } 2110 ttwwakeup (tp); 2111 CX_UNLOCK (bd); 2112 splx (s); 2113 } 2114 2115 static int cx_param (struct tty *tp, struct termios *t) 2116 { 2117 drv_t *d; 2118 bdrv_t *bd; 2119 int s, bits, parity; 2120 2121 d = tp->t_sc; 2122 bd = d->board->sys; 2123 2124 s = splhigh (); 2125 CX_LOCK (bd); 2126 if (t->c_ospeed == 0) { 2127 /* Clear DTR and RTS. */ 2128 cx_set_dtr (d->chan, 0); 2129 CX_UNLOCK (bd); 2130 splx (s); 2131 CX_DEBUG2 (d, ("cx_param (hangup)\n")); 2132 return 0; 2133 } 2134 CX_DEBUG2 (d, ("cx_param\n")); 2135 2136 /* Check requested parameters. */ 2137 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) { 2138 CX_UNLOCK (bd); 2139 splx (s); 2140 return EINVAL; 2141 } 2142 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) { 2143 CX_UNLOCK (bd); 2144 splx (s); 2145 return EINVAL; 2146 } 2147 2148 /* And copy them to tty and channel structures. */ 2149 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed; 2150 tp->t_cflag = t->c_cflag; 2151 2152 /* Set character length and parity mode. */ 2153 switch (t->c_cflag & CSIZE) { 2154 default: 2155 case CS8: bits = 8; break; 2156 case CS7: bits = 7; break; 2157 case CS6: bits = 6; break; 2158 case CS5: bits = 5; break; 2159 } 2160 2161 parity = ((t->c_cflag & PARENB) ? 1 : 0) * 2162 (1 + ((t->c_cflag & PARODD) ? 0 : 1)); 2163 2164 /* Set current channel number. */ 2165 if (! d->chan->dtr) 2166 cx_set_dtr (d->chan, 1); 2167 2168 ttyldoptim (tp); 2169 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB), 2170 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS), 2171 (t->c_iflag & IXON), (t->c_iflag & IXANY), 2172 t->c_cc[VSTART], t->c_cc[VSTOP]); 2173 CX_UNLOCK (bd); 2174 splx (s); 2175 return 0; 2176 } 2177 2178 /* 2179 * Stop output on a line 2180 */ 2181 static void cx_stop (struct tty *tp, int flag) 2182 { 2183 drv_t *d; 2184 bdrv_t *bd; 2185 int s; 2186 2187 d = tp->t_sc; 2188 bd = d->board->sys; 2189 2190 s = splhigh (); 2191 CX_LOCK (bd); 2192 if (tp->t_state & TS_BUSY) { 2193 /* Stop transmitter */ 2194 CX_DEBUG2 (d, ("cx_stop\n")); 2195 cx_transmitter_ctl (d->chan, 0); 2196 } 2197 CX_UNLOCK (bd); 2198 splx (s); 2199 } 2200 2201 /* 2202 * Process the (delayed) carrier signal setup. 2203 */ 2204 static void cx_carrier (void *arg) 2205 { 2206 drv_t *d = arg; 2207 bdrv_t *bd = d->board->sys; 2208 cx_chan_t *c = d->chan; 2209 int s, cd; 2210 2211 s = splhigh (); 2212 CX_LOCK (bd); 2213 cd = cx_get_cd (c); 2214 if (d->cd != cd) { 2215 if (cd) { 2216 CX_DEBUG (d, ("carrier on\n")); 2217 d->cd = 1; 2218 CX_UNLOCK (bd); 2219 splx (s); 2220 if (d->tty) 2221 ttyld_modem(d->tty, 1); 2222 } else { 2223 CX_DEBUG (d, ("carrier loss\n")); 2224 d->cd = 0; 2225 CX_UNLOCK (bd); 2226 splx (s); 2227 if (d->tty) 2228 ttyld_modem(d->tty, 0); 2229 } 2230 } else { 2231 CX_UNLOCK (bd); 2232 splx (s); 2233 } 2234 } 2235 2236 /* 2237 * Modem signal callback function. 2238 */ 2239 static void cx_modem (cx_chan_t *c) 2240 { 2241 drv_t *d = c->sys; 2242 2243 if (!d || c->mode != M_ASYNC) 2244 return; 2245 /* Handle carrier detect/loss. */ 2246 /* Carrier changed - delay processing DCD for a while 2247 * to give both sides some time to initialize. */ 2248 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d); 2249 } 2250 2251 #ifdef NETGRAPH 2252 static int ng_cx_constructor (node_p node) 2253 { 2254 drv_t *d = NG_NODE_PRIVATE (node); 2255 CX_DEBUG (d, ("Constructor\n")); 2256 return EINVAL; 2257 } 2258 2259 static int ng_cx_newhook (node_p node, hook_p hook, const char *name) 2260 { 2261 int s; 2262 drv_t *d = NG_NODE_PRIVATE (node); 2263 bdrv_t *bd = d->board->sys; 2264 2265 if (d->chan->mode == M_ASYNC) 2266 return EINVAL; 2267 2268 /* Attach debug hook */ 2269 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) { 2270 NG_HOOK_SET_PRIVATE (hook, NULL); 2271 d->debug_hook = hook; 2272 return 0; 2273 } 2274 2275 /* Check for raw hook */ 2276 if (strcmp (name, NG_CX_HOOK_RAW) != 0) 2277 return EINVAL; 2278 2279 NG_HOOK_SET_PRIVATE (hook, d); 2280 d->hook = hook; 2281 s = splhigh (); 2282 CX_LOCK (bd); 2283 cx_up (d); 2284 CX_UNLOCK (bd); 2285 splx (s); 2286 return 0; 2287 } 2288 2289 static int print_modems (char *s, cx_chan_t *c, int need_header) 2290 { 2291 int status = cx_modem_status (c->sys); 2292 int length = 0; 2293 2294 if (need_header) 2295 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n"); 2296 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n", 2297 status & TIOCM_LE ? "On" : "-", 2298 status & TIOCM_DTR ? "On" : "-", 2299 status & TIOCM_DSR ? "On" : "-", 2300 status & TIOCM_RTS ? "On" : "-", 2301 status & TIOCM_CTS ? "On" : "-", 2302 status & TIOCM_CD ? "On" : "-"); 2303 return length; 2304 } 2305 2306 static int print_stats (char *s, cx_chan_t *c, int need_header) 2307 { 2308 int length = 0; 2309 2310 if (need_header) 2311 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n"); 2312 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n", 2313 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts, 2314 c->ierrs, c->obytes, c->opkts, c->oerrs); 2315 return length; 2316 } 2317 2318 static int print_chan (char *s, cx_chan_t *c) 2319 { 2320 drv_t *d = c->sys; 2321 int length = 0; 2322 2323 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num); 2324 if (d->chan->debug) 2325 length += sprintf (s + length, " debug=%d", d->chan->debug); 2326 2327 if (cx_get_baud (c)) 2328 length += sprintf (s + length, " %ld", cx_get_baud (c)); 2329 else 2330 length += sprintf (s + length, " extclock"); 2331 2332 if (c->mode == M_HDLC) { 2333 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off"); 2334 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off"); 2335 } 2336 2337 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n"); 2338 return length; 2339 } 2340 2341 static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook) 2342 { 2343 drv_t *d = NG_NODE_PRIVATE (node); 2344 struct ng_mesg *msg; 2345 struct ng_mesg *resp = NULL; 2346 int error = 0; 2347 2348 if (!d) 2349 return EINVAL; 2350 2351 CX_DEBUG (d, ("Rcvmsg\n")); 2352 NGI_GET_MSG (item, msg); 2353 switch (msg->header.typecookie) { 2354 default: 2355 error = EINVAL; 2356 break; 2357 2358 case NGM_CX_COOKIE: 2359 printf ("Don't forget to implement\n"); 2360 error = EINVAL; 2361 break; 2362 2363 case NGM_GENERIC_COOKIE: 2364 switch (msg->header.cmd) { 2365 default: 2366 error = EINVAL; 2367 break; 2368 2369 case NGM_TEXT_STATUS: { 2370 char *s; 2371 int l = 0; 2372 int dl = sizeof (struct ng_mesg) + 730; 2373 2374 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT); 2375 if (! resp) { 2376 error = ENOMEM; 2377 break; 2378 } 2379 bzero (resp, dl); 2380 s = (resp)->data; 2381 l += print_chan (s + l, d->chan); 2382 l += print_stats (s + l, d->chan, 1); 2383 l += print_modems (s + l, d->chan, 1); 2384 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRSIZ); 2385 } 2386 break; 2387 } 2388 break; 2389 } 2390 NG_RESPOND_MSG (error, node, item, resp); 2391 NG_FREE_MSG (msg); 2392 return error; 2393 } 2394 2395 static int ng_cx_rcvdata (hook_p hook, item_p item) 2396 { 2397 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook)); 2398 struct mbuf *m; 2399 struct ng_tag_prio *ptag; 2400 bdrv_t *bd; 2401 struct ifqueue *q; 2402 int s; 2403 2404 NGI_GET_M (item, m); 2405 NG_FREE_ITEM (item); 2406 if (! NG_HOOK_PRIVATE (hook) || ! d) { 2407 NG_FREE_M (m); 2408 return ENETDOWN; 2409 } 2410 2411 bd = d->board->sys; 2412 /* Check for high priority data */ 2413 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE, 2414 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) ) 2415 q = &d->hi_queue; 2416 else 2417 q = &d->lo_queue; 2418 2419 s = splhigh (); 2420 CX_LOCK (bd); 2421 IF_LOCK (q); 2422 if (_IF_QFULL (q)) { 2423 IF_UNLOCK (q); 2424 CX_UNLOCK (bd); 2425 splx (s); 2426 NG_FREE_M (m); 2427 return ENOBUFS; 2428 } 2429 _IF_ENQUEUE (q, m); 2430 IF_UNLOCK (q); 2431 cx_start (d); 2432 CX_UNLOCK (bd); 2433 splx (s); 2434 return 0; 2435 } 2436 2437 static int ng_cx_rmnode (node_p node) 2438 { 2439 drv_t *d = NG_NODE_PRIVATE (node); 2440 bdrv_t *bd; 2441 2442 CX_DEBUG (d, ("Rmnode\n")); 2443 if (d && d->running) { 2444 int s = splhigh (); 2445 bd = d->board->sys; 2446 CX_LOCK (bd); 2447 cx_down (d); 2448 CX_UNLOCK (bd); 2449 splx (s); 2450 } 2451 #ifdef KLD_MODULE 2452 if (node->nd_flags & NGF_REALLY_DIE) { 2453 NG_NODE_SET_PRIVATE (node, NULL); 2454 NG_NODE_UNREF (node); 2455 } 2456 NG_NODE_REVIVE(node); /* Persistent node */ 2457 #endif 2458 return 0; 2459 } 2460 2461 static int ng_cx_connect (hook_p hook) 2462 { 2463 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2464 2465 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d); 2466 return 0; 2467 } 2468 2469 static int ng_cx_disconnect (hook_p hook) 2470 { 2471 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2472 bdrv_t *bd = d->board->sys; 2473 int s; 2474 2475 s = splhigh (); 2476 CX_LOCK (bd); 2477 if (NG_HOOK_PRIVATE (hook)) 2478 cx_down (d); 2479 CX_UNLOCK (bd); 2480 splx (s); 2481 /* If we were wait it than it reasserted now, just stop it. */ 2482 if (!callout_drain (&d->timeout_handle)) 2483 callout_stop (&d->timeout_handle); 2484 return 0; 2485 } 2486 #endif /*NETGRAPH*/ 2487 2488 static int cx_modevent (module_t mod, int type, void *unused) 2489 { 2490 static int load_count = 0; 2491 2492 switch (type) { 2493 case MOD_LOAD: 2494 #ifdef NETGRAPH 2495 if (ng_newtype (&typestruct)) 2496 printf ("Failed to register ng_cx\n"); 2497 #endif 2498 ++load_count; 2499 2500 callout_init (&timeout_handle, 1); 2501 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 2502 /* Software interrupt. */ 2503 swi_add(&tty_intr_event, "cx", cx_softintr, NULL, SWI_TTY, 2504 INTR_MPSAFE, &cx_fast_ih); 2505 break; 2506 case MOD_UNLOAD: 2507 if (load_count == 1) { 2508 printf ("Removing device entry for Sigma\n"); 2509 #ifdef NETGRAPH 2510 ng_rmtype (&typestruct); 2511 #endif 2512 } 2513 /* If we were wait it than it reasserted now, just stop it. */ 2514 if (!callout_drain (&timeout_handle)) 2515 callout_stop (&timeout_handle); 2516 swi_remove (cx_fast_ih); 2517 --load_count; 2518 break; 2519 case MOD_SHUTDOWN: 2520 break; 2521 } 2522 return 0; 2523 } 2524 2525 #ifdef NETGRAPH 2526 static struct ng_type typestruct = { 2527 .version = NG_ABI_VERSION, 2528 .name = NG_CX_NODE_TYPE, 2529 .constructor = ng_cx_constructor, 2530 .rcvmsg = ng_cx_rcvmsg, 2531 .shutdown = ng_cx_rmnode, 2532 .newhook = ng_cx_newhook, 2533 .connect = ng_cx_connect, 2534 .rcvdata = ng_cx_rcvdata, 2535 .disconnect = ng_cx_disconnect, 2536 }; 2537 #endif /*NETGRAPH*/ 2538 2539 #ifdef NETGRAPH 2540 MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 2541 #else 2542 MODULE_DEPEND (isa_cx, sppp, 1, 1, 1); 2543 #endif 2544 DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL); 2545 MODULE_VERSION (cx, 1);
Cache object: 1149b013e644aeba10b7651c8d6adc0d
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