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 <machine/cpufunc.h> 54#include <machine/cserial.h> 55#include <machine/resource.h> 56#include <dev/cx/machdep.h> 57#include <dev/cx/cxddk.h> 58#include <dev/cx/cronyxfw.h> 59#include "opt_ng_cronyx.h" 60#ifdef NETGRAPH_CRONYX 61# include "opt_netgraph.h" 62# include <netgraph/ng_message.h> 63# include <netgraph/netgraph.h> 64# include <dev/cx/ng_cx.h> 65#else 66# include <net/if_types.h> 67# include <net/if_sppp.h> 68# define PP_CISCO IFF_LINK2 69# include <net/bpf.h> 70#endif 71 72#define NCX 1 73 74/* If we don't have Cronyx's sppp version, we don't have fr support via sppp */ 75#ifndef PP_FR 76#define PP_FR 0 77#endif 78 79#define CX_DEBUG(d,s) ({if (d->chan->debug) {\ 80 printf ("%s: ", d->name); printf s;}}) 81#define CX_DEBUG2(d,s) ({if (d->chan->debug>1) {\ 82 printf ("%s: ", d->name); printf s;}}) 83 84#define CX_LOCK_NAME "cxX" 85 86#define CX_LOCK(_bd) mtx_lock (&(_bd)->cx_mtx) 87#define CX_UNLOCK(_bd) mtx_unlock (&(_bd)->cx_mtx) 88#define CX_LOCK_ASSERT(_bd) mtx_assert (&(_bd)->cx_mtx, MA_OWNED) 89 90typedef struct _async_q { 91 int beg; 92 int end; 93 #define BF_SZ 14400 94 int buf[BF_SZ+1]; 95} async_q; 96 97#define AQ_GSZ(q) ((BF_SZ + (q)->end - (q)->beg)%BF_SZ) 98#define AQ_PUSH(q,c) {*((q)->buf + (q)->end) = c;\ 99 (q)->end = ((q)->end + 1)%BF_SZ;} 100#define AQ_POP(q,c) {c = *((q)->buf + (q)->beg);\ 101 (q)->beg = ((q)->beg + 1)%BF_SZ;} 102 103static void cx_identify __P((driver_t *, device_t)); 104static int cx_probe __P((device_t)); 105static int cx_attach __P((device_t)); 106static int cx_detach __P((device_t)); 107static t_open_t cx_topen; 108static t_modem_t cx_tmodem; 109static t_close_t cx_tclose; 110 111static device_method_t cx_isa_methods [] = { 112 DEVMETHOD(device_identify, cx_identify), 113 DEVMETHOD(device_probe, cx_probe), 114 DEVMETHOD(device_attach, cx_attach), 115 DEVMETHOD(device_detach, cx_detach), 116 {0, 0} 117}; 118 119typedef struct _cx_dma_mem_t { 120 unsigned long phys; 121 void *virt; 122 size_t size; 123 bus_dma_tag_t dmat; 124 bus_dmamap_t mapp; 125} cx_dma_mem_t; 126 127typedef struct _drv_t { 128 char name [8]; 129 cx_chan_t *chan; 130 cx_board_t *board; 131 cx_dma_mem_t dmamem; 132 struct tty *tty; 133 struct callout dcd_timeout_handle; 134 unsigned callout; 135 unsigned lock; 136 int open_dev; 137 int cd; 138 int running; 139#ifdef NETGRAPH 140 char nodename [NG_NODESIZ]; 141 hook_p hook; 142 hook_p debug_hook; 143 node_p node; 144 struct ifqueue lo_queue; 145 struct ifqueue hi_queue; 146#else 147 struct ifqueue queue; 148 struct ifnet *ifp; 149#endif 150 short timeout; 151 struct callout timeout_handle; 152 struct cdev *devt; 153 async_q aqueue; 154#define CX_READ 1 155#define CX_WRITE 2 156 int intr_action; 157 short atimeout; 158} drv_t; 159 160typedef struct _bdrv_t { 161 cx_board_t *board; 162 struct resource *base_res; 163 struct resource *drq_res; 164 struct resource *irq_res; 165 int base_rid; 166 int drq_rid; 167 int irq_rid; 168 void *intrhand; 169 drv_t channel [NCHAN]; 170 struct mtx cx_mtx; 171} bdrv_t; 172 173static driver_t cx_isa_driver = { 174 "cx", 175 cx_isa_methods, 176 sizeof (bdrv_t), 177}; 178 179static devclass_t cx_devclass; 180 181extern long csigma_fw_len; 182extern const char *csigma_fw_version; 183extern const char *csigma_fw_date; 184extern const char *csigma_fw_copyright; 185extern const cr_dat_tst_t csigma_fw_tvec[]; 186extern const u_char csigma_fw_data[]; 187static void cx_oproc (struct tty *tp); 188static int cx_param (struct tty *tp, struct termios *t); 189static void cx_stop (struct tty *tp, int flag); 190static void cx_receive (cx_chan_t *c, char *data, int len); 191static void cx_transmit (cx_chan_t *c, void *attachment, int len); 192static void cx_error (cx_chan_t *c, int data); 193static void cx_modem (cx_chan_t *c); 194static void cx_up (drv_t *d); 195static void cx_start (drv_t *d); 196static void cx_softintr (void *); 197static void *cx_fast_ih; 198static void cx_down (drv_t *d); 199static void cx_watchdog (drv_t *d); 200static void cx_watchdog_timer (void *arg); 201static void cx_carrier (void *arg); 202 203#ifdef NETGRAPH 204extern struct ng_type typestruct; 205#else 206static void cx_ifstart (struct ifnet *ifp); 207static void cx_tlf (struct sppp *sp); 208static void cx_tls (struct sppp *sp); 209static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data); 210static void cx_initialize (void *softc); 211#endif 212 213static cx_board_t *adapter [NCX]; 214static drv_t *channel [NCX*NCHAN]; 215static struct callout led_timo [NCX]; 216static struct callout timeout_handle; 217 218static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td); 219static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td); 220static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td); 221static struct cdevsw cx_cdevsw = { 222 .d_version = D_VERSION, 223 .d_open = cx_open, 224 .d_close = cx_close, 225 .d_ioctl = cx_ioctl, 226 .d_name = "cx", 227 .d_flags = D_TTY, 228}; 229 230static int MY_SOFT_INTR; 231 232/* 233 * Print the mbuf chain, for debug purposes only. 234 */ 235static void printmbuf (struct mbuf *m) 236{ 237 printf ("mbuf:"); 238 for (; m; m=m->m_next) { 239 if (m->m_flags & M_PKTHDR) 240 printf (" HDR %d:", m->m_pkthdr.len); 241 if (m->m_flags & M_EXT) 242 printf (" EXT:"); 243 printf (" %d", m->m_len); 244 } 245 printf ("\n"); 246} 247 248/* 249 * Make an mbuf from data. 250 */ 251static struct mbuf *makembuf (void *buf, u_int len) 252{ 253 struct mbuf *m, *o, *p; 254 255 MGETHDR (m, M_NOWAIT, MT_DATA); 256 257 if (! m) 258 return 0; 259 260 if (len >= MINCLSIZE) 261 MCLGET (m, M_NOWAIT); 262 263 m->m_pkthdr.len = len; 264 m->m_len = 0; 265 266 p = m; 267 while (len) { 268 u_int n = M_TRAILINGSPACE (p); 269 if (n > len) 270 n = len; 271 if (! n) { 272 /* Allocate new mbuf. */ 273 o = p; 274 MGET (p, M_NOWAIT, MT_DATA); 275 if (! p) { 276 m_freem (m); 277 return 0; 278 } 279 if (len >= MINCLSIZE) 280 MCLGET (p, M_NOWAIT); 281 p->m_len = 0; 282 o->m_next = p; 283 284 n = M_TRAILINGSPACE (p); 285 if (n > len) 286 n = len; 287 } 288 bcopy (buf, mtod (p, caddr_t) + p->m_len, n); 289 290 p->m_len += n; 291 buf = n + (char*) buf; 292 len -= n; 293 } 294 return m; 295} 296 297/* 298 * Recover after lost transmit interrupts. 299 */ 300static void cx_timeout (void *arg) 301{ 302 drv_t *d; 303 int s, i, k; 304 305 for (i = 0; i < NCX; i++) { 306 if (adapter[i] == NULL) 307 continue; 308 for (k = 0; k < NCHAN; ++k) { 309 d = channel[i * NCHAN + k]; 310 if (! d) 311 continue; 312 s = splhigh (); 313 CX_LOCK ((bdrv_t *)d->board->sys); 314 if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) { 315 d->tty->t_state &= ~TS_BUSY; 316 if (d->tty->t_dev) { 317 d->intr_action |= CX_WRITE; 318 MY_SOFT_INTR = 1; 319 swi_sched (cx_fast_ih, 0); 320 } 321 CX_DEBUG (d, ("cx_timeout\n")); 322 } 323 if (d->atimeout) 324 d->atimeout--; 325 CX_UNLOCK ((bdrv_t *)d->board->sys); 326 splx (s); 327 } 328 } 329 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 330} 331 332static void cx_led_off (void *arg) 333{ 334 cx_board_t *b = arg; 335 bdrv_t *bd = b->sys; 336 int s; 337 338 s = splhigh (); 339 CX_LOCK (bd); 340 cx_led (b, 0); 341 CX_UNLOCK (bd); 342 splx (s); 343} 344 345/* 346 * Activate interrupt handler from DDK. 347 */ 348static void cx_intr (void *arg) 349{ 350 bdrv_t *bd = arg; 351 cx_board_t *b = bd->board; 352#ifndef NETGRAPH 353 int i; 354#endif 355 int s = splhigh (); 356 357 CX_LOCK (bd); 358 /* Turn LED on. */ 359 cx_led (b, 1); 360 361 cx_int_handler (b); 362 363 /* Turn LED off 50 msec later. */ 364 callout_reset (&led_timo[b->num], hz/20, cx_led_off, b); 365 CX_UNLOCK (bd); 366 splx (s); 367 368#ifndef NETGRAPH 369 /* Pass packets in a lock-free state */ 370 for (i = 0; i < NCHAN && b->chan[i].type; i++) { 371 drv_t *d = b->chan[i].sys; 372 struct mbuf *m; 373 if (!d || !d->running) 374 continue; 375 while (_IF_QLEN(&d->queue)) { 376 IF_DEQUEUE (&d->queue,m); 377 if (!m) 378 continue; 379 sppp_input (d->ifp, m); 380 } 381 } 382#endif 383} 384 385static int probe_irq (cx_board_t *b, int irq) 386{ 387 int mask, busy, cnt; 388 389 /* Clear pending irq, if any. */ 390 cx_probe_irq (b, -irq); 391 DELAY (100); 392 for (cnt=0; cnt<5; ++cnt) { 393 /* Get the mask of pending irqs, assuming they are busy. 394 * Activate the adapter on given irq. */ 395 busy = cx_probe_irq (b, irq); 396 DELAY (100); 397 398 /* Get the mask of active irqs. 399 * Deactivate our irq. */ 400 mask = cx_probe_irq (b, -irq); 401 DELAY (100); 402 if ((mask & ~busy) == 1 << irq) { 403 cx_probe_irq (b, 0); 404 /* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n", 405 b->num, irq, mask, busy); */ 406 return 1; 407 } 408 } 409 /* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n", 410 b->num, irq, mask, busy); */ 411 cx_probe_irq (b, 0); 412 return 0; 413} 414 415static short porttab [] = { 416 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 417 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 418}; 419static char dmatab [] = { 7, 6, 5, 0 }; 420static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 }; 421 422static int cx_is_free_res (device_t dev, int rid, int type, u_long start, 423 u_long end, u_long count) 424{ 425 struct resource *res; 426 427 if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count, 428 RF_ALLOCATED))) 429 return 0; 430 431 bus_release_resource (dev, type, rid, res); 432 433 return 1; 434} 435 436static void cx_identify (driver_t *driver, device_t dev) 437{ 438 u_long iobase, rescount; 439 int devcount; 440 device_t *devices; 441 device_t child; 442 devclass_t my_devclass; 443 int i, k; 444 445 if ((my_devclass = devclass_find ("cx")) == NULL) 446 return; 447 448 devclass_get_devices (my_devclass, &devices, &devcount); 449 450 if (devcount == 0) { 451 /* We should find all devices by our self. We could alter other 452 * devices, but we don't have a choise 453 */ 454 for (i = 0; (iobase = porttab [i]) != 0; i++) { 455 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 456 iobase, iobase + NPORT, NPORT)) 457 continue; 458 if (cx_probe_board (iobase, -1, -1) == 0) 459 continue; 460 461 devcount++; 462 463 child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx", 464 -1); 465 466 if (child == NULL) 467 return; 468 469 device_set_desc_copy (child, "Cronyx Sigma"); 470 device_set_driver (child, driver); 471 bus_set_resource (child, SYS_RES_IOPORT, 0, 472 iobase, NPORT); 473 474 if (devcount >= NCX) 475 break; 476 } 477 } else { 478 static short porttab [] = { 479 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 480 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 481 }; 482 /* Lets check user choise. 483 */ 484 for (k = 0; k < devcount; k++) { 485 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 486 &iobase, &rescount) != 0) 487 continue; 488 489 for (i = 0; porttab [i] != 0; i++) { 490 if (porttab [i] != iobase) 491 continue; 492 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 493 iobase, iobase + NPORT, NPORT)) 494 continue; 495 if (cx_probe_board (iobase, -1, -1) == 0) 496 continue; 497 porttab [i] = -1; 498 device_set_desc_copy (devices[k], "Cronyx Sigma"); 499 break; 500 } 501 502 if (porttab [i] == 0) { 503 device_delete_child ( 504 device_get_parent (devices[k]), 505 devices [k]); 506 devices[k] = 0; 507 continue; 508 } 509 } 510 for (k = 0; k < devcount; k++) { 511 if (devices[k] == 0) 512 continue; 513 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 514 &iobase, &rescount) == 0) 515 continue; 516 for (i = 0; (iobase = porttab [i]) != 0; i++) { 517 if (porttab [i] == -1) { 518 continue; 519 } 520 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 521 iobase, iobase + NPORT, NPORT)) 522 continue; 523 if (cx_probe_board (iobase, -1, -1) == 0) 524 continue; 525 526 bus_set_resource (devices[k], SYS_RES_IOPORT, 0, 527 iobase, NPORT); 528 porttab [i] = -1; 529 device_set_desc_copy (devices[k], "Cronyx Sigma"); 530 break; 531 } 532 if (porttab [i] == 0) { 533 device_delete_child ( 534 device_get_parent (devices[k]), 535 devices [k]); 536 } 537 } 538 free (devices, M_TEMP); 539 } 540 541 return; 542} 543 544static int cx_probe (device_t dev) 545{ 546 int unit = device_get_unit (dev); 547 int i; 548 u_long iobase, rescount; 549 550 if (!device_get_desc (dev) || 551 strcmp (device_get_desc (dev), "Cronyx Sigma")) 552 return ENXIO; 553 554 if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) { 555 printf ("cx%d: Couldn't get IOPORT\n", unit); 556 return ENXIO; 557 } 558 559 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 560 iobase, iobase + NPORT, NPORT)) { 561 printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase); 562 return ENXIO; 563 } 564 565 for (i = 0; porttab [i] != 0; i++) { 566 if (porttab [i] == iobase) { 567 porttab [i] = -1; 568 break; 569 } 570 } 571 572 if (porttab [i] == 0) { 573 return ENXIO; 574 } 575 576 if (!cx_probe_board (iobase, -1, -1)) { 577 printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase); 578 return ENXIO; 579 } 580 581 return 0; 582} 583 584static void 585cx_bus_dmamap_addr (void *arg, bus_dma_segment_t *segs, int nseg, int error) 586{ 587 unsigned long *addr; 588 589 if (error) 590 return; 591 592 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 593 addr = arg; 594 *addr = segs->ds_addr; 595} 596 597static int 598cx_bus_dma_mem_alloc (int bnum, int cnum, cx_dma_mem_t *dmem) 599{ 600 int error; 601 602 error = bus_dma_tag_create (NULL, 16, 0, BUS_SPACE_MAXADDR_24BIT, 603 BUS_SPACE_MAXADDR, NULL, NULL, dmem->size, 1, 604 dmem->size, 0, NULL, NULL, &dmem->dmat); 605 if (error) { 606 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 607 else printf ("cx%d: ", bnum); 608 printf ("couldn't allocate tag for dma memory\n"); 609 return 0; 610 } 611 error = bus_dmamem_alloc (dmem->dmat, (void **)&dmem->virt, 612 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &dmem->mapp); 613 if (error) { 614 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 615 else printf ("cx%d: ", bnum); 616 printf ("couldn't allocate mem for dma memory\n"); 617 bus_dma_tag_destroy (dmem->dmat); 618 return 0; 619 } 620 error = bus_dmamap_load (dmem->dmat, dmem->mapp, dmem->virt, 621 dmem->size, cx_bus_dmamap_addr, &dmem->phys, 0); 622 if (error) { 623 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 624 else printf ("cx%d: ", bnum); 625 printf ("couldn't load mem map for dma memory\n"); 626 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 627 bus_dma_tag_destroy (dmem->dmat); 628 return 0; 629 } 630 return 1; 631} 632 633static void 634cx_bus_dma_mem_free (cx_dma_mem_t *dmem) 635{ 636 bus_dmamap_unload (dmem->dmat, dmem->mapp); 637 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 638 bus_dma_tag_destroy (dmem->dmat); 639} 640 641/* 642 * The adapter is present, initialize the driver structures. 643 */ 644static int cx_attach (device_t dev) 645{ 646 bdrv_t *bd = device_get_softc (dev); 647 u_long iobase, drq, irq, rescount; 648 int unit = device_get_unit (dev); 649 char *cx_ln = CX_LOCK_NAME; 650 cx_board_t *b; 651 cx_chan_t *c; 652 drv_t *d; 653 int i; 654 int s; 655 656 KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit)); 657 658 bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount); 659 bd->base_rid = 0; 660 bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid, 661 iobase, iobase + NPORT, NPORT, RF_ACTIVE); 662 if (! bd->base_res) { 663 printf ("cx%d: cannot allocate base address\n", unit); 664 return ENXIO; 665 } 666 667 if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) { 668 for (i = 0; (drq = dmatab [i]) != 0; i++) { 669 if (!cx_is_free_res (dev, 0, SYS_RES_DRQ, 670 drq, drq + 1, 1)) 671 continue; 672 bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1); 673 break; 674 } 675 676 if (dmatab[i] == 0) { 677 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 678 bd->base_res); 679 printf ("cx%d: Couldn't get DRQ\n", unit); 680 return ENXIO; 681 } 682 } 683 684 bd->drq_rid = 0; 685 bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid, 686 drq, drq + 1, 1, RF_ACTIVE); 687 if (! bd->drq_res) { 688 printf ("cx%d: cannot allocate drq\n", unit); 689 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 690 bd->base_res); 691 return ENXIO; 692 } 693 694 if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) { 695 for (i = 0; (irq = irqtab [i]) != 0; i++) { 696 if (!cx_is_free_res (dev, 0, SYS_RES_IRQ, 697 irq, irq + 1, 1)) 698 continue; 699 bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1); 700 break; 701 } 702 703 if (irqtab[i] == 0) { 704 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 705 bd->drq_res); 706 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 707 bd->base_res); 708 printf ("cx%d: Couldn't get IRQ\n", unit); 709 return ENXIO; 710 } 711 } 712 713 bd->irq_rid = 0; 714 bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid, 715 irq, irq + 1, 1, RF_ACTIVE); 716 if (! bd->irq_res) { 717 printf ("cx%d: Couldn't allocate irq\n", unit); 718 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 719 bd->drq_res); 720 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 721 bd->base_res); 722 return ENXIO; 723 } 724 725 b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK); 726 if (!b) { 727 printf ("cx:%d: Couldn't allocate memory\n", unit); 728 return (ENXIO); 729 } 730 adapter[unit] = b; 731 bzero (b, sizeof(cx_board_t)); 732 733 if (! cx_open_board (b, unit, iobase, irq, drq)) { 734 printf ("cx%d: error loading firmware\n", unit); 735 free (b, M_DEVBUF); 736 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 737 bd->irq_res); 738 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 739 bd->drq_res); 740 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 741 bd->base_res); 742 return ENXIO; 743 } 744 745 bd->board = b; 746 747 cx_ln[2] = '0' + unit; 748 mtx_init (&bd->cx_mtx, cx_ln, MTX_NETWORK_LOCK, MTX_DEF|MTX_RECURSE); 749 if (! probe_irq (b, irq)) { 750 printf ("cx%d: irq %ld not functional\n", unit, irq); 751 bd->board = 0; 752 adapter [unit] = 0; 753 mtx_destroy (&bd->cx_mtx); 754 free (b, M_DEVBUF); 755 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 756 bd->irq_res); 757 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 758 bd->drq_res); 759 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 760 bd->base_res); 761 return ENXIO; 762 } 763 b->sys = bd; 764 callout_init (&led_timo[b->num], CALLOUT_MPSAFE); 765 s = splhigh (); 766 if (bus_setup_intr (dev, bd->irq_res, 767 INTR_TYPE_NET|INTR_MPSAFE, 768 NULL, cx_intr, bd, &bd->intrhand)) { 769 printf ("cx%d: Can't setup irq %ld\n", unit, irq); 770 bd->board = 0; 771 b->sys = 0; 772 adapter [unit] = 0; 773 mtx_destroy (&bd->cx_mtx); 774 free (b, M_DEVBUF); 775 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 776 bd->irq_res); 777 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 778 bd->drq_res); 779 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 780 bd->base_res); 781 splx (s); 782 return ENXIO; 783 } 784 785 CX_LOCK (bd); 786 cx_init (b, b->num, b->port, irq, drq); 787 cx_setup_board (b, 0, 0, 0); 788 CX_UNLOCK (bd); 789 790 printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name); 791 792 for (c=b->chan; c<b->chan+NCHAN; ++c) { 793 if (c->type == T_NONE) 794 continue; 795 d = &bd->channel[c->num]; 796 d->dmamem.size = sizeof(cx_buf_t); 797 if (! cx_bus_dma_mem_alloc (unit, c->num, &d->dmamem)) 798 continue; 799 d->board = b; 800 d->chan = c; 801 d->open_dev = 0; 802 c->sys = d; 803 channel [b->num*NCHAN + c->num] = d; 804 sprintf (d->name, "cx%d.%d", b->num, c->num); 805 806 switch (c->type) { 807 case T_SYNC_RS232: 808 case T_SYNC_V35: 809 case T_SYNC_RS449: 810 case T_UNIV: 811 case T_UNIV_RS232: 812 case T_UNIV_RS449: 813 case T_UNIV_V35: 814 callout_init (&d->timeout_handle, CALLOUT_MPSAFE); 815#ifdef NETGRAPH 816 if (ng_make_node_common (&typestruct, &d->node) != 0) { 817 printf ("%s: cannot make common node\n", d->name); 818 channel [b->num*NCHAN + c->num] = 0; 819 c->sys = 0; 820 cx_bus_dma_mem_free (&d->dmamem); 821 continue; 822 } 823 NG_NODE_SET_PRIVATE (d->node, d); 824 sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE, 825 c->board->num*NCHAN + c->num); 826 if (ng_name_node (d->node, d->nodename)) { 827 printf ("%s: cannot name node\n", d->nodename); 828 NG_NODE_UNREF (d->node); 829 channel [b->num*NCHAN + c->num] = 0; 830 c->sys = 0; 831 cx_bus_dma_mem_free (&d->dmamem); 832 continue; 833 } 834 d->lo_queue.ifq_maxlen = ifqmaxlen; 835 d->hi_queue.ifq_maxlen = ifqmaxlen; 836 mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF); 837 mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF); 838#else /*NETGRAPH*/ 839 d->ifp = if_alloc(IFT_PPP); 840 if (d->ifp == NULL) { 841 printf ("%s: cannot if_alloc() common interface\n", 842 d->name); 843 channel [b->num*NCHAN + c->num] = 0; 844 c->sys = 0; 845 cx_bus_dma_mem_free (&d->dmamem); 846 continue; 847 } 848 d->ifp->if_softc = d; 849 if_initname (d->ifp, "cx", b->num * NCHAN + c->num); 850 d->ifp->if_mtu = PP_MTU; 851 d->ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST; 852 d->ifp->if_ioctl = cx_sioctl; 853 d->ifp->if_start = cx_ifstart; 854 d->ifp->if_init = cx_initialize; 855 d->queue.ifq_maxlen = 2; 856 mtx_init (&d->queue.ifq_mtx, "cx_queue", NULL, MTX_DEF); 857 sppp_attach (d->ifp); 858 if_attach (d->ifp); 859 IFP2SP(d->ifp)->pp_tlf = cx_tlf; 860 IFP2SP(d->ifp)->pp_tls = cx_tls; 861 /* If BPF is in the kernel, call the attach for it. 862 * Size of PPP header is 4 bytes. */ 863 bpfattach (d->ifp, DLT_PPP, 4); 864#endif /*NETGRAPH*/ 865 } 866 d->tty = ttyalloc (); 867 d->tty->t_open = cx_topen; 868 d->tty->t_close = cx_tclose; 869 d->tty->t_param = cx_param; 870 d->tty->t_stop = cx_stop; 871 d->tty->t_modem = cx_tmodem; 872 d->tty->t_oproc = cx_oproc; 873 d->tty->t_sc = d; 874 CX_LOCK (bd); 875 cx_start_chan (c, d->dmamem.virt, d->dmamem.phys); 876 cx_register_receive (c, &cx_receive); 877 cx_register_transmit (c, &cx_transmit); 878 cx_register_error (c, &cx_error); 879 cx_register_modem (c, &cx_modem); 880 CX_UNLOCK (bd); 881 882 ttycreate(d->tty, TS_CALLOUT, "x%r%r", b->num, c->num); 883 d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num); 884 d->devt->si_drv1 = d; 885 callout_init (&d->dcd_timeout_handle, CALLOUT_MPSAFE); 886 } 887 splx (s); 888 889 return 0; 890} 891 892static int cx_detach (device_t dev) 893{ 894 bdrv_t *bd = device_get_softc (dev); 895 cx_board_t *b = bd->board; 896 cx_chan_t *c; 897 int s; 898 899 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized")); 900 901 s = splhigh (); 902 CX_LOCK (bd); 903 /* Check if the device is busy (open). */ 904 for (c = b->chan; c < b->chan + NCHAN; ++c) { 905 drv_t *d = (drv_t*) c->sys; 906 907 if (!d || d->chan->type == T_NONE) 908 continue; 909 if (d->lock) { 910 CX_UNLOCK (bd); 911 splx (s); 912 return EBUSY; 913 } 914 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 915 (d->open_dev|0x2)) { 916 CX_UNLOCK (bd); 917 splx (s); 918 return EBUSY; 919 } 920 if (d->running) { 921 CX_UNLOCK (bd); 922 splx (s); 923 return EBUSY; 924 } 925 } 926 927 /* Deactivate the timeout routine. And soft interrupt*/ 928 callout_stop (&led_timo[b->num]); 929 930 for (c = b->chan; c < b->chan + NCHAN; ++c) { 931 drv_t *d = c->sys; 932 933 if (!d || d->chan->type == T_NONE) 934 continue; 935 936 callout_stop (&d->dcd_timeout_handle); 937 } 938 CX_UNLOCK (bd); 939 bus_teardown_intr (dev, bd->irq_res, bd->intrhand); 940 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 941 942 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 943 944 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res); 945 946 CX_LOCK (bd); 947 cx_close_board (b); 948 949 /* Detach the interfaces, free buffer memory. */ 950 for (c = b->chan; c < b->chan + NCHAN; ++c) { 951 drv_t *d = (drv_t*) c->sys; 952 953 if (!d || d->chan->type == T_NONE) 954 continue; 955 956 if (d->tty) { 957 ttyfree (d->tty); 958 d->tty = NULL; 959 } 960 961 callout_stop (&d->timeout_handle); 962#ifdef NETGRAPH 963 if (d->node) { 964 ng_rmnode_self (d->node); 965 NG_NODE_UNREF (d->node); 966 d->node = NULL; 967 } 968 mtx_destroy (&d->lo_queue.ifq_mtx); 969 mtx_destroy (&d->hi_queue.ifq_mtx); 970#else 971 /* Detach from the packet filter list of interfaces. */ 972 bpfdetach (d->ifp); 973 /* Detach from the sync PPP list. */ 974 sppp_detach (d->ifp); 975 976 if_detach (d->ifp); 977 if_free(d->ifp); 978 /* XXXRIK: check interconnection with irq handler */ 979 IF_DRAIN (&d->queue); 980 mtx_destroy (&d->queue.ifq_mtx); 981#endif 982 destroy_dev (d->devt); 983 } 984 985 cx_led_off (b); 986 CX_UNLOCK (bd); 987 callout_drain (&led_timo[b->num]); 988 for (c = b->chan; c < b->chan + NCHAN; ++c) { 989 drv_t *d = c->sys; 990 991 if (!d || d->chan->type == T_NONE) 992 continue; 993 994 callout_drain (&d->dcd_timeout_handle); 995 callout_drain (&d->timeout_handle); 996 } 997 splx (s); 998 999 s = splhigh (); 1000 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1001 drv_t *d = (drv_t*) c->sys; 1002 1003 if (!d || d->chan->type == T_NONE) 1004 continue; 1005 1006 /* Deallocate buffers. */ 1007 cx_bus_dma_mem_free (&d->dmamem); 1008 } 1009 bd->board = 0; 1010 adapter [b->num] = 0; 1011 free (b, M_DEVBUF); 1012 splx (s); 1013 1014 mtx_destroy (&bd->cx_mtx); 1015 1016 return 0; 1017} 1018 1019#ifndef NETGRAPH 1020static void cx_ifstart (struct ifnet *ifp) 1021{ 1022 drv_t *d = ifp->if_softc; 1023 bdrv_t *bd = d->board->sys; 1024 1025 CX_LOCK (bd); 1026 cx_start (d); 1027 CX_UNLOCK (bd); 1028} 1029 1030static void cx_tlf (struct sppp *sp) 1031{ 1032 drv_t *d = SP2IFP(sp)->if_softc; 1033 1034 CX_DEBUG (d, ("cx_tlf\n")); 1035/* cx_set_dtr (d->chan, 0);*/ 1036/* cx_set_rts (d->chan, 0);*/ 1037 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1038 sp->pp_down (sp); 1039} 1040 1041static void cx_tls (struct sppp *sp) 1042{ 1043 drv_t *d = SP2IFP(sp)->if_softc; 1044 1045 CX_DEBUG (d, ("cx_tls\n")); 1046 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1047 sp->pp_up (sp); 1048} 1049 1050/* 1051 * Initialization of interface. 1052 * It seems to be never called by upper level. 1053 */ 1054static void cx_initialize (void *softc) 1055{ 1056 drv_t *d = softc; 1057 1058 CX_DEBUG (d, ("cx_initialize\n")); 1059} 1060 1061/* 1062 * Process an ioctl request. 1063 */ 1064static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data) 1065{ 1066 drv_t *d = ifp->if_softc; 1067 bdrv_t *bd = d->board->sys; 1068 int error, s, was_up, should_be_up; 1069 1070 /* No socket ioctls while the channel is in async mode. */ 1071 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC) 1072 return EBUSY; 1073 1074 /* Socket ioctls on slave subchannels are not allowed. */ 1075 was_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1076 error = sppp_ioctl (ifp, cmd, data); 1077 if (error) 1078 return error; 1079 1080 s = splhigh (); 1081 CX_LOCK (bd); 1082 if (! (ifp->if_flags & IFF_DEBUG)) 1083 d->chan->debug = 0; 1084 else 1085 d->chan->debug = d->chan->debug_shadow; 1086 CX_UNLOCK (bd); 1087 splx (s); 1088 1089 switch (cmd) { 1090 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0; 1091 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0; 1092 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0; 1093 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break; 1094 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break; 1095 } 1096 1097 /* We get here only in case of SIFFLAGS or SIFADDR. */ 1098 s = splhigh (); 1099 CX_LOCK (bd); 1100 should_be_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1101 if (!was_up && should_be_up) { 1102 /* Interface goes up -- start it. */ 1103 cx_up (d); 1104 cx_start (d); 1105 } else if (was_up && !should_be_up) { 1106 /* Interface is going down -- stop it. */ 1107 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/ 1108 cx_down (d); 1109 } 1110 CX_UNLOCK (bd); 1111 splx (s); 1112 return 0; 1113} 1114#endif /*NETGRAPH*/ 1115 1116/* 1117 * Stop the interface. Called on splimp(). 1118 */ 1119static void cx_down (drv_t *d) 1120{ 1121 int s = splhigh (); 1122 CX_DEBUG (d, ("cx_down\n")); 1123 cx_set_dtr (d->chan, 0); 1124 cx_set_rts (d->chan, 0); 1125 d->running = 0; 1126 callout_stop (&d->timeout_handle); 1127 splx (s); 1128} 1129 1130/* 1131 * Start the interface. Called on splimp(). 1132 */ 1133static void cx_up (drv_t *d) 1134{ 1135 int s = splhigh (); 1136 CX_DEBUG (d, ("cx_up\n")); 1137 cx_set_dtr (d->chan, 1); 1138 cx_set_rts (d->chan, 1); 1139 d->running = 1; 1140 splx (s); 1141} 1142 1143/* 1144 * Start output on the (slave) interface. Get another datagram to send 1145 * off of the interface queue, and copy it to the interface 1146 * before starting the output. 1147 */ 1148static void cx_send (drv_t *d) 1149{ 1150 struct mbuf *m; 1151 u_short len; 1152 1153 CX_DEBUG2 (d, ("cx_send\n")); 1154 1155 /* No output if the interface is down. */ 1156 if (! d->running) 1157 return; 1158 1159 /* No output if the modem is off. */ 1160 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan)) 1161 return; 1162 1163 if (cx_buf_free (d->chan)) { 1164 /* Get the packet to send. */ 1165#ifdef NETGRAPH 1166 IF_DEQUEUE (&d->hi_queue, m); 1167 if (! m) 1168 IF_DEQUEUE (&d->lo_queue, m); 1169#else 1170 m = sppp_dequeue (d->ifp); 1171#endif 1172 if (! m) 1173 return; 1174#ifndef NETGRAPH 1175 BPF_MTAP (d->ifp, m); 1176#endif 1177 len = m_length (m, NULL); 1178 if (! m->m_next) 1179 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t), 1180 len, 0); 1181 else { 1182 u_char buf [DMABUFSZ]; 1183 m_copydata (m, 0, len, buf); 1184 cx_send_packet (d->chan, buf, len, 0); 1185 } 1186 m_freem (m); 1187 1188 /* Set up transmit timeout, 10 seconds. */ 1189 d->timeout = 10; 1190 } 1191#ifndef NETGRAPH 1192 d->ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1193#endif 1194} 1195 1196/* 1197 * Start output on the interface. 1198 * Always called on splimp(). 1199 */ 1200static void cx_start (drv_t *d) 1201{ 1202 int s = splhigh (); 1203 if (d->running) { 1204 if (! d->chan->dtr) 1205 cx_set_dtr (d->chan, 1); 1206 if (! d->chan->rts) 1207 cx_set_rts (d->chan, 1); 1208 cx_send (d); 1209 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d); 1210 } 1211 splx (s); 1212} 1213 1214/* 1215 * Handle transmit timeouts. 1216 * Recover after lost transmit interrupts. 1217 * Always called on splimp(). 1218 */ 1219static void cx_watchdog (drv_t *d) 1220{ 1221 1222 CX_DEBUG (d, ("device timeout\n")); 1223 if (d->running) { 1224 cx_setup_chan (d->chan); 1225 cx_start_chan (d->chan, 0, 0); 1226 cx_set_dtr (d->chan, 1); 1227 cx_set_rts (d->chan, 1); 1228 cx_start (d); 1229 } 1230} 1231 1232static void cx_watchdog_timer (void *arg) 1233{ 1234 drv_t *d = arg; 1235 bdrv_t *bd = d->board->sys; 1236 1237 CX_LOCK (bd); 1238 if (d->timeout == 1) 1239 cx_watchdog (d); 1240 if (d->timeout) 1241 d->timeout--; 1242 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d); 1243 CX_UNLOCK (bd); 1244} 1245 1246/* 1247 * Transmit callback function. 1248 */ 1249static void cx_transmit (cx_chan_t *c, void *attachment, int len) 1250{ 1251 drv_t *d = c->sys; 1252 1253 if (!d) 1254 return; 1255 1256 if (c->mode == M_ASYNC && d->tty) { 1257 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH); 1258 d->atimeout = 0; 1259 if (d->tty->t_dev) { 1260 d->intr_action |= CX_WRITE; 1261 MY_SOFT_INTR = 1; 1262 swi_sched (cx_fast_ih, 0); 1263 } 1264 return; 1265 } 1266 d->timeout = 0; 1267#ifndef NETGRAPH 1268 ++d->ifp->if_opackets; 1269 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1270#endif 1271 cx_start (d); 1272} 1273 1274/* 1275 * Process the received packet. 1276 */ 1277static void cx_receive (cx_chan_t *c, char *data, int len) 1278{ 1279 drv_t *d = c->sys; 1280 struct mbuf *m; 1281 char *cc = data; 1282#ifdef NETGRAPH 1283 int error; 1284#endif 1285 1286 if (!d) 1287 return; 1288 1289 if (c->mode == M_ASYNC && d->tty) { 1290 if (d->tty->t_state & TS_ISOPEN) { 1291 async_q *q = &d->aqueue; 1292 int size = BF_SZ - 1 - AQ_GSZ (q); 1293 1294 if (len <= 0 && !size) 1295 return; 1296 1297 if (len > size) { 1298 c->ierrs++; 1299 cx_error (c, CX_OVERRUN); 1300 len = size - 1; 1301 } 1302 1303 while (len--) { 1304 AQ_PUSH (q, *(unsigned char *)cc); 1305 cc++; 1306 } 1307 1308 d->intr_action |= CX_READ; 1309 MY_SOFT_INTR = 1; 1310 swi_sched (cx_fast_ih, 0); 1311 } 1312 return; 1313 } 1314 if (! d->running) 1315 return; 1316 1317 m = makembuf (data, len); 1318 if (! m) { 1319 CX_DEBUG (d, ("no memory for packet\n")); 1320#ifndef NETGRAPH 1321 ++d->ifp->if_iqdrops; 1322#endif 1323 return; 1324 } 1325 if (c->debug > 1) 1326 printmbuf (m); 1327#ifdef NETGRAPH 1328 m->m_pkthdr.rcvif = 0; 1329 NG_SEND_DATA_ONLY (error, d->hook, m); 1330#else 1331 ++d->ifp->if_ipackets; 1332 m->m_pkthdr.rcvif = d->ifp; 1333 /* Check if there's a BPF listener on this interface. 1334 * If so, hand off the raw packet to bpf. */ 1335 BPF_TAP (d->ifp, data, len); 1336 IF_ENQUEUE (&d->queue, m); 1337#endif 1338} 1339 1340#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\ 1341 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\ 1342 && (!(tp->t_iflag & PARMRK)\ 1343 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\ 1344 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\ 1345 && linesw[tp->t_line]->l_rint == ttyinput) 1346 1347/* 1348 * Error callback function. 1349 */ 1350static void cx_error (cx_chan_t *c, int data) 1351{ 1352 drv_t *d = c->sys; 1353 async_q *q; 1354 1355 if (!d) 1356 return; 1357 1358 q = &(d->aqueue); 1359 1360 switch (data) { 1361 case CX_FRAME: 1362 CX_DEBUG (d, ("frame error\n")); 1363 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1364 && (AQ_GSZ (q) < BF_SZ - 1) 1365 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1366 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1367 AQ_PUSH (q, TTY_FE); 1368 d->intr_action |= CX_READ; 1369 MY_SOFT_INTR = 1; 1370 swi_sched (cx_fast_ih, 0); 1371 } 1372#ifndef NETGRAPH 1373 else 1374 ++d->ifp->if_ierrors; 1375#endif 1376 break; 1377 case CX_CRC: 1378 CX_DEBUG (d, ("crc error\n")); 1379 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1380 && (AQ_GSZ (q) < BF_SZ - 1) 1381 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1382 || !(d->tty->t_iflag & INPCK) 1383 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1384 AQ_PUSH (q, TTY_PE); 1385 d->intr_action |= CX_READ; 1386 MY_SOFT_INTR = 1; 1387 swi_sched (cx_fast_ih, 0); 1388 } 1389#ifndef NETGRAPH 1390 else 1391 ++d->ifp->if_ierrors; 1392#endif 1393 break; 1394 case CX_OVERRUN: 1395 CX_DEBUG (d, ("overrun error\n")); 1396#ifdef TTY_OE 1397 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1398 && (AQ_GSZ (q) < BF_SZ - 1) 1399 && (!CONDITION((&d->tty->t_termios), (d->tty)))) { 1400 AQ_PUSH (q, TTY_OE); 1401 d->intr_action |= CX_READ; 1402 MY_SOFT_INTR = 1; 1403 swi_sched (cx_fast_ih, 0); 1404 } 1405#endif 1406#ifndef NETGRAPH 1407 else { 1408 ++d->ifp->if_collisions; 1409 ++d->ifp->if_ierrors; 1410 } 1411#endif 1412 break; 1413 case CX_OVERFLOW: 1414 CX_DEBUG (d, ("overflow error\n")); 1415#ifndef NETGRAPH 1416 if (c->mode != M_ASYNC) 1417 ++d->ifp->if_ierrors; 1418#endif 1419 break; 1420 case CX_UNDERRUN: 1421 CX_DEBUG (d, ("underrun error\n")); 1422 if (c->mode != M_ASYNC) { 1423 d->timeout = 0; 1424#ifndef NETGRAPH 1425 ++d->ifp->if_oerrors; 1426 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1427#endif 1428 cx_start (d); 1429 } 1430 break; 1431 case CX_BREAK: 1432 CX_DEBUG (d, ("break error\n")); 1433 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1434 && (AQ_GSZ (q) < BF_SZ - 1) 1435 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1436 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) { 1437 AQ_PUSH (q, TTY_BI); 1438 d->intr_action |= CX_READ; 1439 MY_SOFT_INTR = 1; 1440 swi_sched (cx_fast_ih, 0); 1441 } 1442#ifndef NETGRAPH 1443 else 1444 ++d->ifp->if_ierrors; 1445#endif 1446 break; 1447 default: 1448 CX_DEBUG (d, ("error #%d\n", data)); 1449 } 1450} 1451 1452static int cx_topen (struct tty *tp, struct cdev *dev) 1453{ 1454 bdrv_t *bd; 1455 drv_t *d; 1456 1457 d = tp->t_sc; 1458 CX_DEBUG2 (d, ("cx_open (serial)\n")); 1459 1460 bd = d->board->sys; 1461 1462 if (d->chan->mode != M_ASYNC) 1463 return (EBUSY); 1464 1465 d->open_dev |= 0x2; 1466 CX_LOCK (bd); 1467 cx_start_chan (d->chan, 0, 0); 1468 cx_set_dtr (d->chan, 1); 1469 cx_set_rts (d->chan, 1); 1470 d->cd = cx_get_cd (d->chan); 1471 CX_UNLOCK (bd); 1472 1473 CX_DEBUG2 (d, ("cx_open done\n")); 1474 1475 return 0; 1476} 1477 1478static void cx_tclose (struct tty *tp) 1479{ 1480 drv_t *d; 1481 bdrv_t *bd; 1482 1483 d = tp->t_sc; 1484 CX_DEBUG2 (d, ("cx_close\n")); 1485 bd = d->board->sys; 1486 CX_LOCK (bd); 1487 /* Disable receiver. 1488 * Transmitter continues sending the queued data. */ 1489 cx_enable_receive (d->chan, 0); 1490 CX_UNLOCK (bd); 1491 d->open_dev &= ~0x2; 1492} 1493 1494static int cx_tmodem (struct tty *tp, int sigon, int sigoff) 1495{ 1496 drv_t *d; 1497 bdrv_t *bd; 1498 1499 d = tp->t_sc; 1500 bd = d->board->sys; 1501 1502 CX_LOCK (bd); 1503 if (!sigon && !sigoff) { 1504 if (cx_get_dsr (d->chan)) sigon |= SER_DSR; 1505 if (cx_get_cd (d->chan)) sigon |= SER_DCD; 1506 if (cx_get_cts (d->chan)) sigon |= SER_CTS; 1507 if (d->chan->dtr) sigon |= SER_DTR; 1508 if (d->chan->rts) sigon |= SER_RTS; 1509 CX_UNLOCK (bd); 1510 return sigon; 1511 } 1512 1513 if (sigon & SER_DTR) 1514 cx_set_dtr (d->chan, 1); 1515 if (sigoff & SER_DTR) 1516 cx_set_dtr (d->chan, 0); 1517 if (sigon & SER_RTS) 1518 cx_set_rts (d->chan, 1); 1519 if (sigoff & SER_RTS) 1520 cx_set_rts (d->chan, 0); 1521 CX_UNLOCK (bd); 1522 1523 return (0); 1524} 1525 1526static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td) 1527{ 1528 int unit; 1529 drv_t *d; 1530 1531 d = dev->si_drv1; 1532 unit = d->chan->num; 1533 1534 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n", 1535 unit, flag, mode)); 1536 1537 d->open_dev |= 0x1; 1538 1539 CX_DEBUG2 (d, ("cx_open done\n")); 1540 1541 return 0; 1542} 1543 1544static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td) 1545{ 1546 drv_t *d; 1547 1548 d = dev->si_drv1; 1549 CX_DEBUG2 (d, ("cx_close\n")); 1550 d->open_dev &= ~0x1; 1551 return 0; 1552} 1553 1554static int cx_modem_status (drv_t *d) 1555{ 1556 bdrv_t *bd = d->board->sys; 1557 int status = 0, s = splhigh (); 1558 CX_LOCK (bd); 1559 /* Already opened by someone or network interface is up? */ 1560 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1561 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running)) 1562 status = TIOCM_LE; /* always enabled while open */ 1563 1564 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR; 1565 if (cx_get_cd (d->chan)) status |= TIOCM_CD; 1566 if (cx_get_cts (d->chan)) status |= TIOCM_CTS; 1567 if (d->chan->dtr) status |= TIOCM_DTR; 1568 if (d->chan->rts) status |= TIOCM_RTS; 1569 CX_UNLOCK (bd); 1570 splx (s); 1571 return status; 1572} 1573 1574static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1575{ 1576 drv_t *d; 1577 bdrv_t *bd; 1578 cx_chan_t *c; 1579 struct serial_statistics *st; 1580 int error, s; 1581 char mask[16]; 1582 1583 d = dev->si_drv1; 1584 c = d->chan; 1585 1586 bd = d->board->sys; 1587 1588 switch (cmd) { 1589 case SERIAL_GETREGISTERED: 1590 CX_DEBUG2 (d, ("ioctl: getregistered\n")); 1591 bzero (mask, sizeof(mask)); 1592 for (s=0; s<NCX*NCHAN; ++s) 1593 if (channel [s]) 1594 mask [s/8] |= 1 << (s & 7); 1595 bcopy (mask, data, sizeof (mask)); 1596 return 0; 1597 1598 case SERIAL_GETPORT: 1599 CX_DEBUG2 (d, ("ioctl: getport\n")); 1600 s = splhigh (); 1601 CX_LOCK (bd); 1602 *(int *)data = cx_get_port (c); 1603 CX_UNLOCK (bd); 1604 splx (s); 1605 if (*(int *)data<0) 1606 return (EINVAL); 1607 else 1608 return 0; 1609 1610 case SERIAL_SETPORT: 1611 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1612 /* Only for superuser! */ 1613 error = priv_check (td, PRIV_DRIVER); 1614 if (error) 1615 return error; 1616 1617 s = splhigh (); 1618 CX_LOCK (bd); 1619 cx_set_port (c, *(int *)data); 1620 CX_UNLOCK (bd); 1621 splx (s); 1622 return 0; 1623 1624#ifndef NETGRAPH 1625 case SERIAL_GETPROTO: 1626 CX_DEBUG2 (d, ("ioctl: getproto\n")); 1627 s = splhigh (); 1628 CX_LOCK (bd); 1629 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" : 1630 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" : 1631 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp"); 1632 CX_UNLOCK (bd); 1633 splx (s); 1634 return 0; 1635 1636 case SERIAL_SETPROTO: 1637 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1638 /* Only for superuser! */ 1639 error = priv_check (td, PRIV_DRIVER); 1640 if (error) 1641 return error; 1642 if (c->mode == M_ASYNC) 1643 return EBUSY; 1644 if (d->ifp->if_drv_flags & IFF_DRV_RUNNING) 1645 return EBUSY; 1646 if (! strcmp ("cisco", (char*)data)) { 1647 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR); 1648 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1649 d->ifp->if_flags |= PP_CISCO; 1650 } else if (! strcmp ("fr", (char*)data)) { 1651 d->ifp->if_flags &= ~(PP_CISCO); 1652 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE; 1653 } else if (! strcmp ("ppp", (char*)data)) { 1654 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE); 1655 d->ifp->if_flags &= ~(PP_CISCO); 1656 } else 1657 return EINVAL; 1658 return 0; 1659 1660 case SERIAL_GETKEEPALIVE: 1661 CX_DEBUG2 (d, ("ioctl: getkeepalive\n")); 1662 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1663 (d->ifp->if_flags & PP_CISCO) || 1664 (c->mode == M_ASYNC)) 1665 return EINVAL; 1666 s = splhigh (); 1667 CX_LOCK (bd); 1668 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0; 1669 CX_UNLOCK (bd); 1670 splx (s); 1671 return 0; 1672 1673 case SERIAL_SETKEEPALIVE: 1674 CX_DEBUG2 (d, ("ioctl: setkeepalive\n")); 1675 /* Only for superuser! */ 1676 error = priv_check (td, PRIV_DRIVER); 1677 if (error) 1678 return error; 1679 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1680 (d->ifp->if_flags & PP_CISCO)) 1681 return EINVAL; 1682 s = splhigh (); 1683 CX_LOCK (bd); 1684 if (*(int*)data) 1685 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1686 else 1687 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE; 1688 CX_UNLOCK (bd); 1689 splx (s); 1690 return 0; 1691#endif /*NETGRAPH*/ 1692 1693 case SERIAL_GETMODE: 1694 CX_DEBUG2 (d, ("ioctl: getmode\n")); 1695 s = splhigh (); 1696 CX_LOCK (bd); 1697 *(int*)data = (c->mode == M_ASYNC) ? 1698 SERIAL_ASYNC : SERIAL_HDLC; 1699 CX_UNLOCK (bd); 1700 splx (s); 1701 return 0; 1702 1703 case SERIAL_SETMODE: 1704 CX_DEBUG2 (d, ("ioctl: setmode\n")); 1705 /* Only for superuser! */ 1706 error = priv_check (td, PRIV_DRIVER); 1707 if (error) 1708 return error; 1709 1710 /* Somebody is waiting for carrier? */ 1711 if (d->lock) 1712 return EBUSY; 1713 /* /dev/ttyXX is already opened by someone? */ 1714 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1715 (d->open_dev|0x2)) 1716 return EBUSY; 1717 /* Network interface is up? 1718 * Cannot change to async mode. */ 1719 if (c->mode != M_ASYNC && d->running && 1720 (*(int*)data == SERIAL_ASYNC)) 1721 return EBUSY; 1722 1723 s = splhigh (); 1724 CX_LOCK (bd); 1725 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) { 1726 cx_set_mode (c, M_ASYNC); 1727 cx_enable_receive (c, 0); 1728 cx_enable_transmit (c, 0); 1729 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) { 1730 if (d->ifp->if_flags & IFF_DEBUG) 1731 c->debug = c->debug_shadow; 1732 cx_set_mode (c, M_HDLC); 1733 cx_enable_receive (c, 1); 1734 cx_enable_transmit (c, 1); 1735 } 1736 CX_UNLOCK (bd); 1737 splx (s); 1738 return 0; 1739 1740 case SERIAL_GETSTAT: 1741 CX_DEBUG2 (d, ("ioctl: getestat\n")); 1742 st = (struct serial_statistics*) data; 1743 s = splhigh (); 1744 CX_LOCK (bd); 1745 st->rintr = c->rintr; 1746 st->tintr = c->tintr; 1747 st->mintr = c->mintr; 1748 st->ibytes = c->ibytes; 1749 st->ipkts = c->ipkts; 1750 st->ierrs = c->ierrs; 1751 st->obytes = c->obytes; 1752 st->opkts = c->opkts; 1753 st->oerrs = c->oerrs; 1754 CX_UNLOCK (bd); 1755 splx (s); 1756 return 0; 1757 1758 case SERIAL_CLRSTAT: 1759 CX_DEBUG2 (d, ("ioctl: clrstat\n")); 1760 /* Only for superuser! */ 1761 error = priv_check (td, PRIV_DRIVER); 1762 if (error) 1763 return error; 1764 s = splhigh (); 1765 CX_LOCK (bd); 1766 c->rintr = 0; 1767 c->tintr = 0; 1768 c->mintr = 0; 1769 c->ibytes = 0; 1770 c->ipkts = 0; 1771 c->ierrs = 0; 1772 c->obytes = 0; 1773 c->opkts = 0; 1774 c->oerrs = 0; 1775 CX_UNLOCK (bd); 1776 splx (s); 1777 return 0; 1778 1779 case SERIAL_GETBAUD: 1780 CX_DEBUG2 (d, ("ioctl: getbaud\n")); 1781 if (c->mode == M_ASYNC) 1782 return EINVAL; 1783 s = splhigh (); 1784 CX_LOCK (bd); 1785 *(long*)data = cx_get_baud(c); 1786 CX_UNLOCK (bd); 1787 splx (s); 1788 return 0; 1789 1790 case SERIAL_SETBAUD: 1791 CX_DEBUG2 (d, ("ioctl: setbaud\n")); 1792 /* Only for superuser! */ 1793 error = priv_check (td, PRIV_DRIVER); 1794 if (error) 1795 return error; 1796 if (c->mode == M_ASYNC) 1797 return EINVAL; 1798 s = splhigh (); 1799 CX_LOCK (bd); 1800 cx_set_baud (c, *(long*)data); 1801 CX_UNLOCK (bd); 1802 splx (s); 1803 return 0; 1804 1805 case SERIAL_GETLOOP: 1806 CX_DEBUG2 (d, ("ioctl: getloop\n")); 1807 if (c->mode == M_ASYNC) 1808 return EINVAL; 1809 s = splhigh (); 1810 CX_LOCK (bd); 1811 *(int*)data = cx_get_loop (c); 1812 CX_UNLOCK (bd); 1813 splx (s); 1814 return 0; 1815 1816 case SERIAL_SETLOOP: 1817 CX_DEBUG2 (d, ("ioctl: setloop\n")); 1818 /* Only for superuser! */ 1819 error = priv_check (td, PRIV_DRIVER); 1820 if (error) 1821 return error; 1822 if (c->mode == M_ASYNC) 1823 return EINVAL; 1824 s = splhigh (); 1825 CX_LOCK (bd); 1826 cx_set_loop (c, *(int*)data); 1827 CX_UNLOCK (bd); 1828 splx (s); 1829 return 0; 1830 1831 case SERIAL_GETDPLL: 1832 CX_DEBUG2 (d, ("ioctl: getdpll\n")); 1833 if (c->mode == M_ASYNC) 1834 return EINVAL; 1835 s = splhigh (); 1836 CX_LOCK (bd); 1837 *(int*)data = cx_get_dpll (c); 1838 CX_UNLOCK (bd); 1839 splx (s); 1840 return 0; 1841 1842 case SERIAL_SETDPLL: 1843 CX_DEBUG2 (d, ("ioctl: setdpll\n")); 1844 /* Only for superuser! */ 1845 error = priv_check (td, PRIV_DRIVER); 1846 if (error) 1847 return error; 1848 if (c->mode == M_ASYNC) 1849 return EINVAL; 1850 s = splhigh (); 1851 CX_LOCK (bd); 1852 cx_set_dpll (c, *(int*)data); 1853 CX_UNLOCK (bd); 1854 splx (s); 1855 return 0; 1856 1857 case SERIAL_GETNRZI: 1858 CX_DEBUG2 (d, ("ioctl: getnrzi\n")); 1859 if (c->mode == M_ASYNC) 1860 return EINVAL; 1861 s = splhigh (); 1862 CX_LOCK (bd); 1863 *(int*)data = cx_get_nrzi (c); 1864 CX_UNLOCK (bd); 1865 splx (s); 1866 return 0; 1867 1868 case SERIAL_SETNRZI: 1869 CX_DEBUG2 (d, ("ioctl: setnrzi\n")); 1870 /* Only for superuser! */ 1871 error = priv_check (td, PRIV_DRIVER); 1872 if (error) 1873 return error; 1874 if (c->mode == M_ASYNC) 1875 return EINVAL; 1876 s = splhigh (); 1877 CX_LOCK (bd); 1878 cx_set_nrzi (c, *(int*)data); 1879 CX_UNLOCK (bd); 1880 splx (s); 1881 return 0; 1882 1883 case SERIAL_GETDEBUG: 1884 CX_DEBUG2 (d, ("ioctl: getdebug\n")); 1885 s = splhigh (); 1886 CX_LOCK (bd); 1887 *(int*)data = c->debug; 1888 CX_UNLOCK (bd); 1889 splx (s); 1890 return 0; 1891 1892 case SERIAL_SETDEBUG: 1893 CX_DEBUG2 (d, ("ioctl: setdebug\n")); 1894 /* Only for superuser! */ 1895 error = priv_check (td, PRIV_DRIVER); 1896 if (error) 1897 return error; 1898 s = splhigh (); 1899 CX_LOCK (bd); 1900#ifndef NETGRAPH 1901 if (c->mode == M_ASYNC) { 1902 c->debug = *(int*)data; 1903 } else { 1904 /* 1905 * The debug_shadow is always greater than zero for 1906 * logic simplicity. For switching debug off the 1907 * IFF_DEBUG is responsible (for !M_ASYNC mode). 1908 */ 1909 c->debug_shadow = (*(int*)data) ? (*(int*)data) : 1; 1910 if (d->ifp->if_flags & IFF_DEBUG) 1911 c->debug = c->debug_shadow; 1912 } 1913#else 1914 c->debug = *(int*)data; 1915#endif 1916 CX_UNLOCK (bd); 1917 splx (s); 1918 return 0; 1919 } 1920 1921 switch (cmd) { 1922 case TIOCSDTR: /* Set DTR */ 1923 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n")); 1924 s = splhigh (); 1925 CX_LOCK (bd); 1926 cx_set_dtr (c, 1); 1927 CX_UNLOCK (bd); 1928 splx (s); 1929 return 0; 1930 1931 case TIOCCDTR: /* Clear DTR */ 1932 CX_DEBUG2 (d, ("ioctl: tioccdtr\n")); 1933 s = splhigh (); 1934 CX_LOCK (bd); 1935 cx_set_dtr (c, 0); 1936 CX_UNLOCK (bd); 1937 splx (s); 1938 return 0; 1939 1940 case TIOCMSET: /* Set DTR/RTS */ 1941 CX_DEBUG2 (d, ("ioctl: tiocmset\n")); 1942 s = splhigh (); 1943 CX_LOCK (bd); 1944 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0); 1945 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0); 1946 CX_UNLOCK (bd); 1947 splx (s); 1948 return 0; 1949 1950 case TIOCMBIS: /* Add DTR/RTS */ 1951 CX_DEBUG2 (d, ("ioctl: tiocmbis\n")); 1952 s = splhigh (); 1953 CX_LOCK (bd); 1954 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1); 1955 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1); 1956 CX_UNLOCK (bd); 1957 splx (s); 1958 return 0; 1959 1960 case TIOCMBIC: /* Clear DTR/RTS */ 1961 CX_DEBUG2 (d, ("ioctl: tiocmbic\n")); 1962 s = splhigh (); 1963 CX_LOCK (bd); 1964 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0); 1965 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0); 1966 CX_UNLOCK (bd); 1967 splx (s); 1968 return 0; 1969 1970 case TIOCMGET: /* Get modem status */ 1971 CX_DEBUG2 (d, ("ioctl: tiocmget\n")); 1972 *(int*)data = cx_modem_status (d); 1973 return 0; 1974 1975 } 1976 1977 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd)); 1978 return ENOTTY; 1979} 1980 1981void cx_softintr (void *unused) 1982{ 1983 drv_t *d; 1984 bdrv_t *bd; 1985 async_q *q; 1986 int i, s, ic, k; 1987 while (MY_SOFT_INTR) { 1988 MY_SOFT_INTR = 0; 1989 for (i=0; i<NCX*NCHAN; ++i) { 1990 d = channel [i]; 1991 if (!d || !d->chan || d->chan->type == T_NONE 1992 || d->chan->mode != M_ASYNC || !d->tty 1993 || !d->tty->t_dev) 1994 continue; 1995 bd = d->board->sys; 1996 s = splhigh (); 1997 CX_LOCK (bd); 1998 if (d->intr_action & CX_READ) { 1999 q = &(d->aqueue); 2000 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) { 2001 k = AQ_GSZ(q); 2002 if (d->tty->t_rawq.c_cc + k > 2003 d->tty->t_ihiwat 2004 && (d->tty->t_cflag & CRTS_IFLOW 2005 || d->tty->t_iflag & IXOFF) 2006 && !(d->tty->t_state & TS_TBLOCK)) 2007 ttyblock(d->tty); 2008 d->tty->t_rawcc += k; 2009 while (k>0) { 2010 k--; 2011 AQ_POP (q, ic); 2012 CX_UNLOCK (bd); 2013 splx (s); 2014 putc (ic, &d->tty->t_rawq); 2015 s = splhigh (); 2016 CX_LOCK (bd); 2017 } 2018 ttwakeup(d->tty); 2019 if (d->tty->t_state & TS_TTSTOP 2020 && (d->tty->t_iflag & IXANY 2021 || d->tty->t_cc[VSTART] == 2022 d->tty->t_cc[VSTOP])) { 2023 d->tty->t_state &= ~TS_TTSTOP; 2024 d->tty->t_lflag &= ~FLUSHO; 2025 d->intr_action |= CX_WRITE; 2026 } 2027 } else { 2028 while (q->end != q->beg) { 2029 AQ_POP (q, ic); 2030 CX_UNLOCK (bd); 2031 splx (s); 2032 ttyld_rint (d->tty, ic); 2033 s = splhigh (); 2034 CX_LOCK (bd); 2035 } 2036 } 2037 d->intr_action &= ~CX_READ; 2038 } 2039 splx (s); 2040 CX_UNLOCK (bd); 2041 2042 s = splhigh (); 2043 CX_LOCK (bd); 2044 if (d->intr_action & CX_WRITE) { 2045 if (d->tty->t_line) 2046 ttyld_start (d->tty); 2047 else 2048 cx_oproc (d->tty); 2049 d->intr_action &= ~CX_WRITE; 2050 } 2051 CX_UNLOCK (bd); 2052 splx (s); 2053 2054 } 2055 } 2056} 2057 2058/* 2059 * Fill transmitter buffer with data. 2060 */ 2061static void cx_oproc (struct tty *tp) 2062{ 2063 int s, k; 2064 drv_t *d; 2065 bdrv_t *bd; 2066 static u_char buf[DMABUFSZ]; 2067 u_char *p; 2068 u_short len = 0, sublen = 0; 2069 2070 d = tp->t_sc; 2071 bd = d->board->sys; 2072 2073 CX_DEBUG2 (d, ("cx_oproc\n")); 2074 2075 s = splhigh (); 2076 CX_LOCK (bd); 2077 2078 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts) 2079 cx_set_rts (d->chan, 0); 2080 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts) 2081 cx_set_rts (d->chan, 1); 2082 2083 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) { 2084 /* Start transmitter. */ 2085 cx_enable_transmit (d->chan, 1); 2086 2087 /* Is it busy? */ 2088 if (! cx_buf_free (d->chan)) { 2089 tp->t_state |= TS_BUSY; 2090 CX_UNLOCK (bd); 2091 splx (s); 2092 return; 2093 } 2094 if (tp->t_iflag & IXOFF) { 2095 p = (buf + (DMABUFSZ/2)); 2096 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2097 k = sublen; 2098 while (k--) { 2099 /* Send XON/XOFF out of band. */ 2100 if (*p == tp->t_cc[VSTOP]) { 2101 cx_xflow_ctl (d->chan, 0); 2102 p++; 2103 continue; 2104 } 2105 if (*p == tp->t_cc[VSTART]) { 2106 cx_xflow_ctl (d->chan, 1); 2107 p++; 2108 continue; 2109 } 2110 buf[len] = *p; 2111 len++; 2112 p++; 2113 } 2114 } else { 2115 p = buf; 2116 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2117 } 2118 if (len) { 2119 cx_send_packet (d->chan, buf, len, 0); 2120 tp->t_state |= TS_BUSY; 2121 d->atimeout = 10; 2122 CX_DEBUG2 (d, ("out %d bytes\n", len)); 2123 } 2124 } 2125 ttwwakeup (tp); 2126 CX_UNLOCK (bd); 2127 splx (s); 2128} 2129 2130static int cx_param (struct tty *tp, struct termios *t) 2131{ 2132 drv_t *d; 2133 bdrv_t *bd; 2134 int s, bits, parity; 2135 2136 d = tp->t_sc; 2137 bd = d->board->sys; 2138 2139 s = splhigh (); 2140 CX_LOCK (bd); 2141 if (t->c_ospeed == 0) { 2142 /* Clear DTR and RTS. */ 2143 cx_set_dtr (d->chan, 0); 2144 CX_UNLOCK (bd); 2145 splx (s); 2146 CX_DEBUG2 (d, ("cx_param (hangup)\n")); 2147 return 0; 2148 } 2149 CX_DEBUG2 (d, ("cx_param\n")); 2150 2151 /* Check requested parameters. */ 2152 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) { 2153 CX_UNLOCK (bd); 2154 splx (s); 2155 return EINVAL; 2156 } 2157 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) { 2158 CX_UNLOCK (bd); 2159 splx (s); 2160 return EINVAL; 2161 } 2162 2163 /* And copy them to tty and channel structures. */ 2164 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed; 2165 tp->t_cflag = t->c_cflag; 2166 2167 /* Set character length and parity mode. */ 2168 switch (t->c_cflag & CSIZE) { 2169 default: 2170 case CS8: bits = 8; break; 2171 case CS7: bits = 7; break; 2172 case CS6: bits = 6; break; 2173 case CS5: bits = 5; break; 2174 } 2175 2176 parity = ((t->c_cflag & PARENB) ? 1 : 0) * 2177 (1 + ((t->c_cflag & PARODD) ? 0 : 1)); 2178 2179 /* Set current channel number. */ 2180 if (! d->chan->dtr) 2181 cx_set_dtr (d->chan, 1); 2182 2183 ttyldoptim (tp); 2184 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB), 2185 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS), 2186 (t->c_iflag & IXON), (t->c_iflag & IXANY), 2187 t->c_cc[VSTART], t->c_cc[VSTOP]); 2188 CX_UNLOCK (bd); 2189 splx (s); 2190 return 0; 2191} 2192 2193/* 2194 * Stop output on a line 2195 */ 2196static void cx_stop (struct tty *tp, int flag) 2197{ 2198 drv_t *d; 2199 bdrv_t *bd; 2200 int s; 2201 2202 d = tp->t_sc; 2203 bd = d->board->sys; 2204 2205 s = splhigh (); 2206 CX_LOCK (bd); 2207 if (tp->t_state & TS_BUSY) { 2208 /* Stop transmitter */ 2209 CX_DEBUG2 (d, ("cx_stop\n")); 2210 cx_transmitter_ctl (d->chan, 0); 2211 } 2212 CX_UNLOCK (bd); 2213 splx (s); 2214} 2215 2216/* 2217 * Process the (delayed) carrier signal setup. 2218 */ 2219static void cx_carrier (void *arg) 2220{ 2221 drv_t *d = arg; 2222 bdrv_t *bd = d->board->sys; 2223 cx_chan_t *c = d->chan; 2224 int s, cd; 2225 2226 s = splhigh (); 2227 CX_LOCK (bd); 2228 cd = cx_get_cd (c); 2229 if (d->cd != cd) { 2230 if (cd) { 2231 CX_DEBUG (d, ("carrier on\n")); 2232 d->cd = 1; 2233 CX_UNLOCK (bd); 2234 splx (s); 2235 if (d->tty) 2236 ttyld_modem(d->tty, 1); 2237 } else { 2238 CX_DEBUG (d, ("carrier loss\n")); 2239 d->cd = 0; 2240 CX_UNLOCK (bd); 2241 splx (s); 2242 if (d->tty) 2243 ttyld_modem(d->tty, 0); 2244 } 2245 } else { 2246 CX_UNLOCK (bd); 2247 splx (s); 2248 } 2249} 2250 2251/* 2252 * Modem signal callback function. 2253 */ 2254static void cx_modem (cx_chan_t *c) 2255{ 2256 drv_t *d = c->sys; 2257 2258 if (!d || c->mode != M_ASYNC) 2259 return; 2260 /* Handle carrier detect/loss. */ 2261 /* Carrier changed - delay processing DCD for a while 2262 * to give both sides some time to initialize. */ 2263 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d); 2264} 2265 2266#ifdef NETGRAPH 2267static int ng_cx_constructor (node_p node) 2268{ 2269 drv_t *d = NG_NODE_PRIVATE (node); 2270 CX_DEBUG (d, ("Constructor\n")); 2271 return EINVAL; 2272} 2273 2274static int ng_cx_newhook (node_p node, hook_p hook, const char *name) 2275{ 2276 int s; 2277 drv_t *d = NG_NODE_PRIVATE (node); 2278 bdrv_t *bd = d->board->sys; 2279 2280 if (d->chan->mode == M_ASYNC) 2281 return EINVAL; 2282 2283 /* Attach debug hook */ 2284 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) { 2285 NG_HOOK_SET_PRIVATE (hook, NULL); 2286 d->debug_hook = hook; 2287 return 0; 2288 } 2289 2290 /* Check for raw hook */ 2291 if (strcmp (name, NG_CX_HOOK_RAW) != 0) 2292 return EINVAL; 2293 2294 NG_HOOK_SET_PRIVATE (hook, d); 2295 d->hook = hook; 2296 s = splhigh (); 2297 CX_LOCK (bd); 2298 cx_up (d); 2299 CX_UNLOCK (bd); 2300 splx (s); 2301 return 0; 2302} 2303 2304static int print_modems (char *s, cx_chan_t *c, int need_header) 2305{ 2306 int status = cx_modem_status (c->sys); 2307 int length = 0; 2308 2309 if (need_header) 2310 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n"); 2311 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n", 2312 status & TIOCM_LE ? "On" : "-", 2313 status & TIOCM_DTR ? "On" : "-", 2314 status & TIOCM_DSR ? "On" : "-", 2315 status & TIOCM_RTS ? "On" : "-", 2316 status & TIOCM_CTS ? "On" : "-", 2317 status & TIOCM_CD ? "On" : "-"); 2318 return length; 2319} 2320 2321static int print_stats (char *s, cx_chan_t *c, int need_header) 2322{ 2323 int length = 0; 2324 2325 if (need_header) 2326 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n"); 2327 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n", 2328 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts, 2329 c->ierrs, c->obytes, c->opkts, c->oerrs); 2330 return length; 2331} 2332 2333static int print_chan (char *s, cx_chan_t *c) 2334{ 2335 drv_t *d = c->sys; 2336 int length = 0; 2337 2338 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num); 2339 if (d->chan->debug) 2340 length += sprintf (s + length, " debug=%d", d->chan->debug); 2341 2342 if (cx_get_baud (c)) 2343 length += sprintf (s + length, " %ld", cx_get_baud (c)); 2344 else 2345 length += sprintf (s + length, " extclock"); 2346 2347 if (c->mode == M_HDLC) { 2348 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off"); 2349 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off"); 2350 } 2351 2352 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n"); 2353 return length; 2354} 2355 2356static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook) 2357{ 2358 drv_t *d = NG_NODE_PRIVATE (node); 2359 struct ng_mesg *msg; 2360 struct ng_mesg *resp = NULL; 2361 int error = 0; 2362 2363 if (!d) 2364 return EINVAL; 2365 2366 CX_DEBUG (d, ("Rcvmsg\n")); 2367 NGI_GET_MSG (item, msg); 2368 switch (msg->header.typecookie) { 2369 default: 2370 error = EINVAL; 2371 break; 2372 2373 case NGM_CX_COOKIE: 2374 printf ("Don't forget to implement\n"); 2375 error = EINVAL; 2376 break; 2377 2378 case NGM_GENERIC_COOKIE: 2379 switch (msg->header.cmd) { 2380 default: 2381 error = EINVAL; 2382 break; 2383 2384 case NGM_TEXT_STATUS: { 2385 char *s; 2386 int l = 0; 2387 int dl = sizeof (struct ng_mesg) + 730; 2388 2389 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT); 2390 if (! resp) { 2391 error = ENOMEM; 2392 break; 2393 } 2394 bzero (resp, dl); 2395 s = (resp)->data; 2396 l += print_chan (s + l, d->chan); 2397 l += print_stats (s + l, d->chan, 1); 2398 l += print_modems (s + l, d->chan, 1); 2399 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRSIZ); 2400 } 2401 break; 2402 } 2403 break; 2404 } 2405 NG_RESPOND_MSG (error, node, item, resp); 2406 NG_FREE_MSG (msg); 2407 return error; 2408} 2409 2410static int ng_cx_rcvdata (hook_p hook, item_p item) 2411{ 2412 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook)); 2413 struct mbuf *m; 2414 struct ng_tag_prio *ptag; 2415 bdrv_t *bd; 2416 struct ifqueue *q; 2417 int s; 2418 2419 NGI_GET_M (item, m); 2420 NG_FREE_ITEM (item); 2421 if (! NG_HOOK_PRIVATE (hook) || ! d) { 2422 NG_FREE_M (m); 2423 return ENETDOWN; 2424 } 2425 2426 bd = d->board->sys; 2427 /* Check for high priority data */ 2428 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE, 2429 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) ) 2430 q = &d->hi_queue; 2431 else 2432 q = &d->lo_queue; 2433 2434 s = splhigh (); 2435 CX_LOCK (bd); 2436 IF_LOCK (q); 2437 if (_IF_QFULL (q)) { 2438 _IF_DROP (q); 2439 IF_UNLOCK (q); 2440 CX_UNLOCK (bd); 2441 splx (s); 2442 NG_FREE_M (m); 2443 return ENOBUFS; 2444 } 2445 _IF_ENQUEUE (q, m); 2446 IF_UNLOCK (q); 2447 cx_start (d); 2448 CX_UNLOCK (bd); 2449 splx (s); 2450 return 0; 2451} 2452 2453static int ng_cx_rmnode (node_p node) 2454{ 2455 drv_t *d = NG_NODE_PRIVATE (node); 2456 bdrv_t *bd; 2457 2458 CX_DEBUG (d, ("Rmnode\n")); 2459 if (d && d->running) { 2460 int s = splhigh (); 2461 bd = d->board->sys; 2462 CX_LOCK (bd); 2463 cx_down (d); 2464 CX_UNLOCK (bd); 2465 splx (s); 2466 } 2467#ifdef KLD_MODULE 2468 if (node->nd_flags & NGF_REALLY_DIE) { 2469 NG_NODE_SET_PRIVATE (node, NULL); 2470 NG_NODE_UNREF (node); 2471 } 2472 NG_NODE_REVIVE(node); /* Persistant node */ 2473#endif 2474 return 0; 2475} 2476 2477static int ng_cx_connect (hook_p hook) 2478{ 2479 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2480 2481 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d); 2482 return 0; 2483} 2484 2485static int ng_cx_disconnect (hook_p hook) 2486{ 2487 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2488 bdrv_t *bd = d->board->sys; 2489 int s; 2490 2491 s = splhigh (); 2492 CX_LOCK (bd); 2493 if (NG_HOOK_PRIVATE (hook)) 2494 cx_down (d); 2495 CX_UNLOCK (bd); 2496 splx (s); 2497 /* If we were wait it than it reasserted now, just stop it. */ 2498 if (!callout_drain (&d->timeout_handle)) 2499 callout_stop (&d->timeout_handle); 2500 return 0; 2501} 2502#endif /*NETGRAPH*/ 2503 2504static int cx_modevent (module_t mod, int type, void *unused) 2505{ 2506 static int load_count = 0; 2507 2508 switch (type) { 2509 case MOD_LOAD: 2510#ifdef NETGRAPH 2511 if (ng_newtype (&typestruct)) 2512 printf ("Failed to register ng_cx\n"); 2513#endif 2514 ++load_count; 2515 2516 callout_init (&timeout_handle, CALLOUT_MPSAFE); 2517 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 2518 /* Software interrupt. */ 2519 swi_add(&tty_intr_event, "cx", cx_softintr, NULL, SWI_TTY, 2520 INTR_MPSAFE, &cx_fast_ih); 2521 break; 2522 case MOD_UNLOAD: 2523 if (load_count == 1) { 2524 printf ("Removing device entry for Sigma\n"); 2525#ifdef NETGRAPH 2526 ng_rmtype (&typestruct); 2527#endif 2528 } 2529 /* If we were wait it than it reasserted now, just stop it. */ 2530 if (!callout_drain (&timeout_handle)) 2531 callout_stop (&timeout_handle); 2532 swi_remove (cx_fast_ih); 2533 --load_count; 2534 break; 2535 case MOD_SHUTDOWN: 2536 break; 2537 } 2538 return 0; 2539} 2540 2541#ifdef NETGRAPH 2542static struct ng_type typestruct = { 2543 .version = NG_ABI_VERSION, 2544 .name = NG_CX_NODE_TYPE, 2545 .constructor = ng_cx_constructor, 2546 .rcvmsg = ng_cx_rcvmsg, 2547 .shutdown = ng_cx_rmnode, 2548 .newhook = ng_cx_newhook, 2549 .connect = ng_cx_connect, 2550 .rcvdata = ng_cx_rcvdata, 2551 .disconnect = ng_cx_disconnect, 2552}; 2553#endif /*NETGRAPH*/ 2554 2555#ifdef NETGRAPH 2556MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 2557#else 2558MODULE_DEPEND (isa_cx, sppp, 1, 1, 1); 2559#endif 2560DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL); 2561MODULE_VERSION (cx, 1); 2562