if_cx.c revision 147862
1/*- 2 * Cronyx-Sigma adapter driver for FreeBSD. 3 * Supports PPP/HDLC and Cisco/HDLC protocol in synchronous mode, 4 * and asyncronous 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: head/sys/dev/cx/if_cx.c 147862 2005-07-09 16:14:05Z rik $"); 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/proc.h> 34#include <sys/mbuf.h> 35#include <sys/sockio.h> 36#include <sys/malloc.h> 37#include <sys/socket.h> 38#include <sys/sysctl.h> 39#include <sys/conf.h> 40#include <sys/errno.h> 41#include <sys/serial.h> 42#include <sys/tty.h> 43#include <sys/bus.h> 44#include <machine/bus.h> 45#include <sys/rman.h> 46#include <isa/isavar.h> 47#include <sys/fcntl.h> 48#include <sys/interrupt.h> 49#include <vm/vm.h> 50#include <vm/pmap.h> 51#include <net/if.h> 52#include <machine/cpufunc.h> 53#include <machine/cserial.h> 54#include <machine/clock.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 86static int cx_mpsafenet = 1; 87TUNABLE_INT("debug.cx.mpsafenet", &cx_mpsafenet); 88SYSCTL_NODE(_debug, OID_AUTO, cx, CTLFLAG_RD, 0, "Cronyx Sigma Adapters"); 89SYSCTL_INT(_debug_cx, OID_AUTO, mpsafenet, CTLFLAG_RD, &cx_mpsafenet, 0, 90 "Enable/disable MPSAFE network support for Cronyx Sigma Adapters"); 91 92#define CX_LOCK(_bd) do { \ 93 if (cx_mpsafenet) \ 94 mtx_lock (&(_bd)->cx_mtx); \ 95 } while (0) 96#define CX_UNLOCK(_bd) do { \ 97 if (cx_mpsafenet) \ 98 mtx_unlock (&(_bd)->cx_mtx); \ 99 } while (0) 100#define CX_LOCK_ASSERT(_bd) do { \ 101 if (cx_mpsafenet) \ 102 mtx_assert (&(_bd)->cx_mtx, MA_OWNED); \ 103 } while (0) 104 105typedef struct _async_q { 106 int beg; 107 int end; 108 #define BF_SZ 14400 109 int buf[BF_SZ+1]; 110} async_q; 111 112#define AQ_GSZ(q) ((BF_SZ + (q)->end - (q)->beg)%BF_SZ) 113#define AQ_PUSH(q,c) {*((q)->buf + (q)->end) = c;\ 114 (q)->end = ((q)->end + 1)%BF_SZ;} 115#define AQ_POP(q,c) {c = *((q)->buf + (q)->beg);\ 116 (q)->beg = ((q)->beg + 1)%BF_SZ;} 117 118static void cx_identify __P((driver_t *, device_t)); 119static int cx_probe __P((device_t)); 120static int cx_attach __P((device_t)); 121static int cx_detach __P((device_t)); 122static t_open_t cx_topen; 123static t_modem_t cx_tmodem; 124static t_close_t cx_tclose; 125 126static device_method_t cx_isa_methods [] = { 127 DEVMETHOD(device_identify, cx_identify), 128 DEVMETHOD(device_probe, cx_probe), 129 DEVMETHOD(device_attach, cx_attach), 130 DEVMETHOD(device_detach, cx_detach), 131 {0, 0} 132}; 133 134typedef struct _cx_dma_mem_t { 135 unsigned long phys; 136 void *virt; 137 size_t size; 138 bus_dma_tag_t dmat; 139 bus_dmamap_t mapp; 140} cx_dma_mem_t; 141 142typedef struct _drv_t { 143 char name [8]; 144 cx_chan_t *chan; 145 cx_board_t *board; 146 cx_dma_mem_t dmamem; 147 struct tty *tty; 148 struct callout dcd_timeout_handle; 149 unsigned callout; 150 unsigned lock; 151 int open_dev; 152 int cd; 153 int running; 154#ifdef NETGRAPH 155 char nodename [NG_NODELEN+1]; 156 hook_p hook; 157 hook_p debug_hook; 158 node_p node; 159 struct ifqueue lo_queue; 160 struct ifqueue hi_queue; 161 short timeout; 162 struct callout timeout_handle; 163#else 164 struct ifqueue queue; 165 struct ifnet *ifp; 166#endif 167 struct cdev *devt; 168 async_q aqueue; 169#define CX_READ 1 170#define CX_WRITE 2 171 int intr_action; 172 short atimeout; 173} drv_t; 174 175typedef struct _bdrv_t { 176 cx_board_t *board; 177 struct resource *base_res; 178 struct resource *drq_res; 179 struct resource *irq_res; 180 int base_rid; 181 int drq_rid; 182 int irq_rid; 183 void *intrhand; 184 drv_t channel [NCHAN]; 185 struct mtx cx_mtx; 186} bdrv_t; 187 188static driver_t cx_isa_driver = { 189 "cx", 190 cx_isa_methods, 191 sizeof (bdrv_t), 192}; 193 194static devclass_t cx_devclass; 195 196extern long csigma_fw_len; 197extern const char *csigma_fw_version; 198extern const char *csigma_fw_date; 199extern const char *csigma_fw_copyright; 200extern const cr_dat_tst_t csigma_fw_tvec[]; 201extern const u_char csigma_fw_data[]; 202static void cx_oproc (struct tty *tp); 203static int cx_param (struct tty *tp, struct termios *t); 204static void cx_stop (struct tty *tp, int flag); 205static void cx_receive (cx_chan_t *c, char *data, int len); 206static void cx_transmit (cx_chan_t *c, void *attachment, int len); 207static void cx_error (cx_chan_t *c, int data); 208static void cx_modem (cx_chan_t *c); 209static void cx_up (drv_t *d); 210static void cx_start (drv_t *d); 211static void cx_softintr (void *); 212static void *cx_fast_ih; 213static void cx_down (drv_t *d); 214static void cx_watchdog (drv_t *d); 215static void cx_carrier (void *arg); 216 217#ifdef NETGRAPH 218extern struct ng_type typestruct; 219#else 220static void cx_ifstart (struct ifnet *ifp); 221static void cx_tlf (struct sppp *sp); 222static void cx_tls (struct sppp *sp); 223static void cx_ifwatchdog (struct ifnet *ifp); 224static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data); 225static void cx_initialize (void *softc); 226#endif 227 228static cx_board_t *adapter [NCX]; 229static drv_t *channel [NCX*NCHAN]; 230static struct callout led_timo [NCX]; 231static struct callout timeout_handle; 232extern struct cdevsw cx_cdevsw; 233 234static int MY_SOFT_INTR; 235 236/* 237 * Print the mbuf chain, for debug purposes only. 238 */ 239static void printmbuf (struct mbuf *m) 240{ 241 printf ("mbuf:"); 242 for (; m; m=m->m_next) { 243 if (m->m_flags & M_PKTHDR) 244 printf (" HDR %d:", m->m_pkthdr.len); 245 if (m->m_flags & M_EXT) 246 printf (" EXT:"); 247 printf (" %d", m->m_len); 248 } 249 printf ("\n"); 250} 251 252/* 253 * Make an mbuf from data. 254 */ 255static struct mbuf *makembuf (void *buf, u_int len) 256{ 257 struct mbuf *m, *o, *p; 258 259 MGETHDR (m, M_DONTWAIT, MT_DATA); 260 261 if (! m) 262 return 0; 263 264 if (len >= MINCLSIZE) 265 MCLGET (m, M_DONTWAIT); 266 267 m->m_pkthdr.len = len; 268 m->m_len = 0; 269 270 p = m; 271 while (len) { 272 u_int n = M_TRAILINGSPACE (p); 273 if (n > len) 274 n = len; 275 if (! n) { 276 /* Allocate new mbuf. */ 277 o = p; 278 MGET (p, M_DONTWAIT, MT_DATA); 279 if (! p) { 280 m_freem (m); 281 return 0; 282 } 283 if (len >= MINCLSIZE) 284 MCLGET (p, M_DONTWAIT); 285 p->m_len = 0; 286 o->m_next = p; 287 288 n = M_TRAILINGSPACE (p); 289 if (n > len) 290 n = len; 291 } 292 bcopy (buf, mtod (p, caddr_t) + p->m_len, n); 293 294 p->m_len += n; 295 buf = n + (char*) buf; 296 len -= n; 297 } 298 return m; 299} 300 301/* 302 * Recover after lost transmit interrupts. 303 */ 304static void cx_timeout (void *arg) 305{ 306 drv_t *d; 307 int s, i, k; 308 309 for (i = 0; i < NCX; i++) { 310 if (adapter[i] == NULL) 311 continue; 312 for (k = 0; k < NCHAN; ++k) { 313 d = channel[i * NCHAN + k]; 314 if (! d) 315 continue; 316 s = splhigh (); 317 CX_LOCK ((bdrv_t *)d->board->sys); 318 if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) { 319 d->tty->t_state &= ~TS_BUSY; 320 if (d->tty->t_dev) { 321 d->intr_action |= CX_WRITE; 322 MY_SOFT_INTR = 1; 323 swi_sched (cx_fast_ih, 0); 324 } 325 CX_DEBUG (d, ("cx_timeout\n")); 326 } 327 if (d->atimeout) 328 d->atimeout--; 329 CX_UNLOCK ((bdrv_t *)d->board->sys); 330 splx (s); 331 } 332 } 333 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 334} 335 336static void cx_led_off (void *arg) 337{ 338 cx_board_t *b = arg; 339 bdrv_t *bd = b->sys; 340 int s; 341 342 s = splhigh (); 343 CX_LOCK (bd); 344 cx_led (b, 0); 345 CX_UNLOCK (bd); 346 splx (s); 347} 348 349/* 350 * Activate interupt handler from DDK. 351 */ 352static void cx_intr (void *arg) 353{ 354 bdrv_t *bd = arg; 355 cx_board_t *b = bd->board; 356#ifndef NETGRAPH 357 int i; 358#endif 359 int s = splhigh (); 360 361 CX_LOCK (bd); 362 /* Turn LED on. */ 363 cx_led (b, 1); 364 365 cx_int_handler (b); 366 367 /* Turn LED off 50 msec later. */ 368 callout_reset (&led_timo[b->num], hz/20, cx_led_off, b); 369 CX_UNLOCK (bd); 370 splx (s); 371 372#ifndef NETGRAPH 373 /* Pass packets in a lock-free state */ 374 for (i = 0; i < NCHAN && b->chan[i].type; i++) { 375 drv_t *d = b->chan[i].sys; 376 struct mbuf *m; 377 if (!d || !d->running) 378 continue; 379 while (_IF_QLEN(&d->queue)) { 380 IF_DEQUEUE (&d->queue,m); 381 if (!m) 382 continue; 383 sppp_input (d->ifp, m); 384 } 385 } 386#endif 387} 388 389static int probe_irq (cx_board_t *b, int irq) 390{ 391 int mask, busy, cnt; 392 393 /* Clear pending irq, if any. */ 394 cx_probe_irq (b, -irq); 395 DELAY (100); 396 for (cnt=0; cnt<5; ++cnt) { 397 /* Get the mask of pending irqs, assuming they are busy. 398 * Activate the adapter on given irq. */ 399 busy = cx_probe_irq (b, irq); 400 DELAY (100); 401 402 /* Get the mask of active irqs. 403 * Deactivate our irq. */ 404 mask = cx_probe_irq (b, -irq); 405 DELAY (100); 406 if ((mask & ~busy) == 1 << irq) { 407 cx_probe_irq (b, 0); 408 /* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n", 409 b->num, irq, mask, busy); */ 410 return 1; 411 } 412 } 413 /* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n", 414 b->num, irq, mask, busy); */ 415 cx_probe_irq (b, 0); 416 return 0; 417} 418 419static short porttab [] = { 420 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 421 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 422}; 423static char dmatab [] = { 7, 6, 5, 0 }; 424static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 }; 425 426static int cx_is_free_res (device_t dev, int rid, int type, u_long start, 427 u_long end, u_long count) 428{ 429 struct resource *res; 430 431 if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count, 432 RF_ALLOCATED))) 433 return 0; 434 435 bus_release_resource (dev, type, rid, res); 436 437 return 1; 438} 439 440static void cx_identify (driver_t *driver, device_t dev) 441{ 442 u_long iobase, rescount; 443 int devcount; 444 device_t *devices; 445 device_t child; 446 devclass_t my_devclass; 447 int i, k; 448 449 if ((my_devclass = devclass_find ("cx")) == NULL) 450 return; 451 452 devclass_get_devices (my_devclass, &devices, &devcount); 453 454 if (devcount == 0) { 455 /* We should find all devices by our self. We could alter other 456 * devices, but we don't have a choise 457 */ 458 for (i = 0; (iobase = porttab [i]) != 0; i++) { 459 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 460 iobase, iobase + NPORT, NPORT)) 461 continue; 462 if (cx_probe_board (iobase, -1, -1) == 0) 463 continue; 464 465 devcount++; 466 467 child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx", 468 -1); 469 470 if (child == NULL) 471 return; 472 473 device_set_desc_copy (child, "Cronyx Sigma"); 474 device_set_driver (child, driver); 475 bus_set_resource (child, SYS_RES_IOPORT, 0, 476 iobase, NPORT); 477 478 if (devcount >= NCX) 479 break; 480 } 481 } else { 482 static short porttab [] = { 483 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 484 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 485 }; 486 /* Lets check user choise. 487 */ 488 for (k = 0; k < devcount; k++) { 489 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 490 &iobase, &rescount) != 0) 491 continue; 492 493 for (i = 0; porttab [i] != 0; i++) { 494 if (porttab [i] != iobase) 495 continue; 496 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 497 iobase, iobase + NPORT, NPORT)) 498 continue; 499 if (cx_probe_board (iobase, -1, -1) == 0) 500 continue; 501 porttab [i] = -1; 502 device_set_desc_copy (devices[k], "Cronyx Sigma"); 503 break; 504 } 505 506 if (porttab [i] == 0) { 507 device_delete_child ( 508 device_get_parent (devices[k]), 509 devices [k]); 510 devices[k] = 0; 511 continue; 512 } 513 } 514 for (k = 0; k < devcount; k++) { 515 if (devices[k] == 0) 516 continue; 517 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 518 &iobase, &rescount) == 0) 519 continue; 520 for (i = 0; (iobase = porttab [i]) != 0; i++) { 521 if (porttab [i] == -1) { 522 continue; 523 } 524 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 525 iobase, iobase + NPORT, NPORT)) 526 continue; 527 if (cx_probe_board (iobase, -1, -1) == 0) 528 continue; 529 530 bus_set_resource (devices[k], SYS_RES_IOPORT, 0, 531 iobase, NPORT); 532 porttab [i] = -1; 533 device_set_desc_copy (devices[k], "Cronyx Sigma"); 534 break; 535 } 536 if (porttab [i] == 0) { 537 device_delete_child ( 538 device_get_parent (devices[k]), 539 devices [k]); 540 } 541 } 542 free (devices, M_TEMP); 543 } 544 545 return; 546} 547 548static int cx_probe (device_t dev) 549{ 550 int unit = device_get_unit (dev); 551 int i; 552 u_long iobase, rescount; 553 554 if (!device_get_desc (dev) || 555 strcmp (device_get_desc (dev), "Cronyx Sigma")) 556 return ENXIO; 557 558 if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) { 559 printf ("cx%d: Couldn't get IOPORT\n", unit); 560 return ENXIO; 561 } 562 563 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 564 iobase, iobase + NPORT, NPORT)) { 565 printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase); 566 return ENXIO; 567 } 568 569 for (i = 0; porttab [i] != 0; i++) { 570 if (porttab [i] == iobase) { 571 porttab [i] = -1; 572 break; 573 } 574 } 575 576 if (porttab [i] == 0) { 577 return ENXIO; 578 } 579 580 if (!cx_probe_board (iobase, -1, -1)) { 581 printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase); 582 return ENXIO; 583 } 584 585 return 0; 586} 587 588static void 589cx_bus_dmamap_addr (void *arg, bus_dma_segment_t *segs, int nseg, int error) 590{ 591 unsigned long *addr; 592 593 if (error) 594 return; 595 596 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 597 addr = arg; 598 *addr = segs->ds_addr; 599} 600 601static int 602cx_bus_dma_mem_alloc (int bnum, int cnum, cx_dma_mem_t *dmem) 603{ 604 int error; 605 606 error = bus_dma_tag_create (NULL, 16, 0, BUS_SPACE_MAXADDR_24BIT, 607 BUS_SPACE_MAXADDR, NULL, NULL, dmem->size, 1, 608 dmem->size, 0, NULL, NULL, &dmem->dmat); 609 if (error) { 610 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 611 else printf ("cx%d: ", bnum); 612 printf ("couldn't allocate tag for dma memory\n"); 613 return 0; 614 } 615 error = bus_dmamem_alloc (dmem->dmat, (void **)&dmem->virt, 616 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &dmem->mapp); 617 if (error) { 618 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 619 else printf ("cx%d: ", bnum); 620 printf ("couldn't allocate mem for dma memory\n"); 621 bus_dma_tag_destroy (dmem->dmat); 622 return 0; 623 } 624 error = bus_dmamap_load (dmem->dmat, dmem->mapp, dmem->virt, 625 dmem->size, cx_bus_dmamap_addr, &dmem->phys, 0); 626 if (error) { 627 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 628 else printf ("cx%d: ", bnum); 629 printf ("couldn't load mem map for dma memory\n"); 630 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 631 bus_dma_tag_destroy (dmem->dmat); 632 return 0; 633 } 634 return 1; 635} 636 637static void 638cx_bus_dma_mem_free (cx_dma_mem_t *dmem) 639{ 640 bus_dmamap_unload (dmem->dmat, dmem->mapp); 641 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 642 bus_dma_tag_destroy (dmem->dmat); 643} 644 645/* 646 * The adapter is present, initialize the driver structures. 647 */ 648static int cx_attach (device_t dev) 649{ 650 bdrv_t *bd = device_get_softc (dev); 651 u_long iobase, drq, irq, rescount; 652 int unit = device_get_unit (dev); 653 char *cx_ln = CX_LOCK_NAME; 654 cx_board_t *b; 655 cx_chan_t *c; 656 drv_t *d; 657 int i; 658 int s; 659 660 KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit)); 661 662 bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount); 663 bd->base_rid = 0; 664 bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid, 665 iobase, iobase + NPORT, NPORT, RF_ACTIVE); 666 if (! bd->base_res) { 667 printf ("cx%d: cannot allocate base address\n", unit); 668 return ENXIO; 669 } 670 671 if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) { 672 for (i = 0; (drq = dmatab [i]) != 0; i++) { 673 if (!cx_is_free_res (dev, 0, SYS_RES_DRQ, 674 drq, drq + 1, 1)) 675 continue; 676 bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1); 677 break; 678 } 679 680 if (dmatab[i] == 0) { 681 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 682 bd->base_res); 683 printf ("cx%d: Couldn't get DRQ\n", unit); 684 return ENXIO; 685 } 686 } 687 688 bd->drq_rid = 0; 689 bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid, 690 drq, drq + 1, 1, RF_ACTIVE); 691 if (! bd->drq_res) { 692 printf ("cx%d: cannot allocate drq\n", unit); 693 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 694 bd->base_res); 695 return ENXIO; 696 } 697 698 if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) { 699 for (i = 0; (irq = irqtab [i]) != 0; i++) { 700 if (!cx_is_free_res (dev, 0, SYS_RES_IRQ, 701 irq, irq + 1, 1)) 702 continue; 703 bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1); 704 break; 705 } 706 707 if (irqtab[i] == 0) { 708 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 709 bd->drq_res); 710 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 711 bd->base_res); 712 printf ("cx%d: Couldn't get IRQ\n", unit); 713 return ENXIO; 714 } 715 } 716 717 bd->irq_rid = 0; 718 bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid, 719 irq, irq + 1, 1, RF_ACTIVE); 720 if (! bd->irq_res) { 721 printf ("cx%d: Couldn't allocate irq\n", unit); 722 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 723 bd->drq_res); 724 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 725 bd->base_res); 726 return ENXIO; 727 } 728 729 b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK); 730 if (!b) { 731 printf ("cx:%d: Couldn't allocate memory\n", unit); 732 return (ENXIO); 733 } 734 adapter[unit] = b; 735 bzero (b, sizeof(cx_board_t)); 736 737 if (! cx_open_board (b, unit, iobase, irq, drq)) { 738 printf ("cx%d: error loading firmware\n", unit); 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 } 748 749 bd->board = b; 750 751 cx_ln[2] = '0' + unit; 752 mtx_init (&bd->cx_mtx, cx_ln, MTX_NETWORK_LOCK, MTX_DEF|MTX_RECURSE); 753 if (! probe_irq (b, irq)) { 754 printf ("cx%d: irq %ld not functional\n", unit, irq); 755 bd->board = 0; 756 adapter [unit] = 0; 757 mtx_destroy (&bd->cx_mtx); 758 free (b, M_DEVBUF); 759 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 760 bd->irq_res); 761 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 762 bd->drq_res); 763 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 764 bd->base_res); 765 return ENXIO; 766 } 767 b->sys = bd; 768 callout_init (&led_timo[b->num], cx_mpsafenet ? CALLOUT_MPSAFE : 0); 769 s = splhigh (); 770 if (bus_setup_intr (dev, bd->irq_res, 771 INTR_TYPE_NET|(cx_mpsafenet?INTR_MPSAFE:0), 772 cx_intr, bd, &bd->intrhand)) { 773 printf ("cx%d: Can't setup irq %ld\n", unit, irq); 774 bd->board = 0; 775 b->sys = 0; 776 adapter [unit] = 0; 777 mtx_destroy (&bd->cx_mtx); 778 free (b, M_DEVBUF); 779 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 780 bd->irq_res); 781 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 782 bd->drq_res); 783 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 784 bd->base_res); 785 splx (s); 786 return ENXIO; 787 } 788 789 CX_LOCK (bd); 790 cx_init (b, b->num, b->port, irq, drq); 791 cx_setup_board (b, 0, 0, 0); 792 CX_UNLOCK (bd); 793 794 printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name); 795 796 for (c=b->chan; c<b->chan+NCHAN; ++c) { 797 if (c->type == T_NONE) 798 continue; 799 d = &bd->channel[c->num]; 800 d->dmamem.size = sizeof(cx_buf_t); 801 if (! cx_bus_dma_mem_alloc (unit, c->num, &d->dmamem)) 802 continue; 803 d->board = b; 804 d->chan = c; 805 d->open_dev = 0; 806 c->sys = d; 807 channel [b->num*NCHAN + c->num] = d; 808 sprintf (d->name, "cx%d.%d", b->num, c->num); 809 810 switch (c->type) { 811 case T_SYNC_RS232: 812 case T_SYNC_V35: 813 case T_SYNC_RS449: 814 case T_UNIV: 815 case T_UNIV_RS232: 816 case T_UNIV_RS449: 817 case T_UNIV_V35: 818#ifdef NETGRAPH 819 if (ng_make_node_common (&typestruct, &d->node) != 0) { 820 printf ("%s: cannot make common node\n", d->name); 821 channel [b->num*NCHAN + c->num] = 0; 822 c->sys = 0; 823 cx_bus_dma_mem_free (&d->dmamem); 824 continue; 825 } 826 NG_NODE_SET_PRIVATE (d->node, d); 827 sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE, 828 c->board->num*NCHAN + c->num); 829 if (ng_name_node (d->node, d->nodename)) { 830 printf ("%s: cannot name node\n", d->nodename); 831 NG_NODE_UNREF (d->node); 832 channel [b->num*NCHAN + c->num] = 0; 833 c->sys = 0; 834 cx_bus_dma_mem_free (&d->dmamem); 835 continue; 836 } 837 d->lo_queue.ifq_maxlen = IFQ_MAXLEN; 838 d->hi_queue.ifq_maxlen = IFQ_MAXLEN; 839 mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF); 840 mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF); 841 callout_init (&d->timeout_handle, 842 cx_mpsafenet ? CALLOUT_MPSAFE : 0); 843#else /*NETGRAPH*/ 844 d->ifp = if_alloc(IFT_PPP); 845 if (d->ifp == NULL) { 846 printf ("%s: cannot if_alloc() common interface\n", 847 d->name); 848 channel [b->num*NCHAN + c->num] = 0; 849 c->sys = 0; 850 cx_bus_dma_mem_free (&d->dmamem); 851 continue; 852 } 853 d->ifp->if_softc = d; 854 if_initname (d->ifp, "cx", b->num * NCHAN + c->num); 855 d->ifp->if_mtu = PP_MTU; 856 d->ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST; 857 if (!cx_mpsafenet) 858 d->ifp->if_flags |= IFF_NEEDSGIANT; 859 d->ifp->if_ioctl = cx_sioctl; 860 d->ifp->if_start = cx_ifstart; 861 d->ifp->if_watchdog = cx_ifwatchdog; 862 d->ifp->if_init = cx_initialize; 863 d->queue.ifq_maxlen = 2; 864 mtx_init (&d->queue.ifq_mtx, "cx_queue", NULL, MTX_DEF); 865 sppp_attach (d->ifp); 866 if_attach (d->ifp); 867 IFP2SP(d->ifp)->pp_tlf = cx_tlf; 868 IFP2SP(d->ifp)->pp_tls = cx_tls; 869 /* If BPF is in the kernel, call the attach for it. 870 * Size of PPP header is 4 bytes. */ 871 bpfattach (d->ifp, DLT_PPP, 4); 872#endif /*NETGRAPH*/ 873 } 874 d->tty = ttyalloc (); 875 d->tty->t_open = cx_topen; 876 d->tty->t_close = cx_tclose; 877 d->tty->t_param = cx_param; 878 d->tty->t_stop = cx_stop; 879 d->tty->t_modem = cx_tmodem; 880 d->tty->t_oproc = cx_oproc; 881 d->tty->t_sc = d; 882 CX_LOCK (bd); 883 cx_start_chan (c, d->dmamem.virt, d->dmamem.phys); 884 cx_register_receive (c, &cx_receive); 885 cx_register_transmit (c, &cx_transmit); 886 cx_register_error (c, &cx_error); 887 cx_register_modem (c, &cx_modem); 888 CX_UNLOCK (bd); 889 890 ttycreate(d->tty, NULL, 0, MINOR_CALLOUT, 891 "x%r%r", b->num, c->num); 892 d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num); 893 d->devt->si_drv1 = d; 894 callout_init (&d->dcd_timeout_handle, 895 cx_mpsafenet ? CALLOUT_MPSAFE : 0); 896 } 897 splx (s); 898 899 return 0; 900} 901 902static int cx_detach (device_t dev) 903{ 904 bdrv_t *bd = device_get_softc (dev); 905 cx_board_t *b = bd->board; 906 cx_chan_t *c; 907 int s; 908 909 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized")); 910 911 s = splhigh (); 912 CX_LOCK (bd); 913 /* Check if the device is busy (open). */ 914 for (c = b->chan; c < b->chan + NCHAN; ++c) { 915 drv_t *d = (drv_t*) c->sys; 916 917 if (!d || d->chan->type == T_NONE) 918 continue; 919 if (d->lock) { 920 CX_UNLOCK (bd); 921 splx (s); 922 return EBUSY; 923 } 924 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 925 (d->open_dev|0x2)) { 926 CX_UNLOCK (bd); 927 splx (s); 928 return EBUSY; 929 } 930 if (d->running) { 931 CX_UNLOCK (bd); 932 splx (s); 933 return EBUSY; 934 } 935 } 936 937 /* Deactivate the timeout routine. And soft interrupt*/ 938 callout_stop (&led_timo[b->num]); 939 940 for (c = b->chan; c < b->chan + NCHAN; ++c) { 941 drv_t *d = c->sys; 942 943 if (!d || d->chan->type == T_NONE) 944 continue; 945 946 callout_stop (&d->dcd_timeout_handle); 947 } 948 CX_UNLOCK (bd); 949 bus_teardown_intr (dev, bd->irq_res, bd->intrhand); 950 bus_deactivate_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 951 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 952 953 bus_deactivate_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 954 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 955 956 bus_deactivate_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->irq_res); 957 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res); 958 959 CX_LOCK (bd); 960 cx_close_board (b); 961 962 /* Detach the interfaces, free buffer memory. */ 963 for (c = b->chan; c < b->chan + NCHAN; ++c) { 964 drv_t *d = (drv_t*) c->sys; 965 966 if (!d || d->chan->type == T_NONE) 967 continue; 968 969 if (d->tty) { 970 ttyfree (d->tty); 971 d->tty = NULL; 972 } 973 974#ifdef NETGRAPH 975 if (d->node) { 976 ng_rmnode_self (d->node); 977 NG_NODE_UNREF (d->node); 978 d->node = NULL; 979 } 980 mtx_destroy (&d->lo_queue.ifq_mtx); 981 mtx_destroy (&d->hi_queue.ifq_mtx); 982#else 983 /* Detach from the packet filter list of interfaces. */ 984 bpfdetach (d->ifp); 985 /* Detach from the sync PPP list. */ 986 sppp_detach (d->ifp); 987 988 if_detach (d->ifp); 989 if_free(d->ifp); 990 /* XXXRIK: check interconnection with irq handler */ 991 IF_DRAIN (&d->queue); 992 mtx_destroy (&d->queue.ifq_mtx); 993#endif 994 destroy_dev (d->devt); 995 } 996 997 cx_led_off (b); 998 CX_UNLOCK (bd); 999 callout_drain (&led_timo[b->num]); 1000 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1001 drv_t *d = c->sys; 1002 1003 if (!d || d->chan->type == T_NONE) 1004 continue; 1005 1006 callout_drain (&d->dcd_timeout_handle); 1007 } 1008 splx (s); 1009 1010 s = splhigh (); 1011 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1012 drv_t *d = (drv_t*) c->sys; 1013 1014 if (!d || d->chan->type == T_NONE) 1015 continue; 1016 1017 /* Deallocate buffers. */ 1018 cx_bus_dma_mem_free (&d->dmamem); 1019 } 1020 bd->board = 0; 1021 adapter [b->num] = 0; 1022 free (b, M_DEVBUF); 1023 splx (s); 1024 1025 mtx_destroy (&bd->cx_mtx); 1026 1027 return 0; 1028} 1029 1030#ifndef NETGRAPH 1031static void cx_ifstart (struct ifnet *ifp) 1032{ 1033 drv_t *d = ifp->if_softc; 1034 bdrv_t *bd = d->board->sys; 1035 1036 CX_LOCK (bd); 1037 cx_start (d); 1038 CX_UNLOCK (bd); 1039} 1040 1041static void cx_ifwatchdog (struct ifnet *ifp) 1042{ 1043 drv_t *d = ifp->if_softc; 1044 1045 cx_watchdog (d); 1046} 1047 1048static void cx_tlf (struct sppp *sp) 1049{ 1050 drv_t *d = SP2IFP(sp)->if_softc; 1051 1052 CX_DEBUG (d, ("cx_tlf\n")); 1053/* cx_set_dtr (d->chan, 0);*/ 1054/* cx_set_rts (d->chan, 0);*/ 1055 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1056 sp->pp_down (sp); 1057} 1058 1059static void cx_tls (struct sppp *sp) 1060{ 1061 drv_t *d = SP2IFP(sp)->if_softc; 1062 1063 CX_DEBUG (d, ("cx_tls\n")); 1064 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1065 sp->pp_up (sp); 1066} 1067 1068/* 1069 * Initialization of interface. 1070 * It seems to be never called by upper level. 1071 */ 1072static void cx_initialize (void *softc) 1073{ 1074 drv_t *d = softc; 1075 1076 CX_DEBUG (d, ("cx_initialize\n")); 1077} 1078 1079/* 1080 * Process an ioctl request. 1081 */ 1082static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data) 1083{ 1084 drv_t *d = ifp->if_softc; 1085 bdrv_t *bd = d->board->sys; 1086 int error, s, was_up, should_be_up; 1087 1088 /* No socket ioctls while the channel is in async mode. */ 1089 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC) 1090 return EBUSY; 1091 1092 /* Socket ioctls on slave subchannels are not allowed. */ 1093 was_up = (ifp->if_flags & IFF_RUNNING) != 0; 1094 error = sppp_ioctl (ifp, cmd, data); 1095 if (error) 1096 return error; 1097 1098 if (! (ifp->if_flags & IFF_DEBUG)) 1099 d->chan->debug = 0; 1100 else if (! d->chan->debug) 1101 d->chan->debug = 1; 1102 1103 switch (cmd) { 1104 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0; 1105 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0; 1106 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0; 1107 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break; 1108 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break; 1109 } 1110 1111 /* We get here only in case of SIFFLAGS or SIFADDR. */ 1112 s = splhigh (); 1113 CX_LOCK (bd); 1114 should_be_up = (ifp->if_flags & IFF_RUNNING) != 0; 1115 if (!was_up && should_be_up) { 1116 /* Interface goes up -- start it. */ 1117 cx_up (d); 1118 cx_start (d); 1119 } else if (was_up && !should_be_up) { 1120 /* Interface is going down -- stop it. */ 1121 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/ 1122 cx_down (d); 1123 } 1124 CX_UNLOCK (bd); 1125 splx (s); 1126 return 0; 1127} 1128#endif /*NETGRAPH*/ 1129 1130/* 1131 * Stop the interface. Called on splimp(). 1132 */ 1133static void cx_down (drv_t *d) 1134{ 1135 int s = splhigh (); 1136 CX_DEBUG (d, ("cx_down\n")); 1137 cx_set_dtr (d->chan, 0); 1138 cx_set_rts (d->chan, 0); 1139 d->running = 0; 1140 splx (s); 1141} 1142 1143/* 1144 * Start the interface. Called on splimp(). 1145 */ 1146static void cx_up (drv_t *d) 1147{ 1148 int s = splhigh (); 1149 CX_DEBUG (d, ("cx_up\n")); 1150 cx_set_dtr (d->chan, 1); 1151 cx_set_rts (d->chan, 1); 1152 d->running = 1; 1153 splx (s); 1154} 1155 1156/* 1157 * Start output on the (slave) interface. Get another datagram to send 1158 * off of the interface queue, and copy it to the interface 1159 * before starting the output. 1160 */ 1161static void cx_send (drv_t *d) 1162{ 1163 struct mbuf *m; 1164 u_short len; 1165 1166 CX_DEBUG2 (d, ("cx_send\n")); 1167 1168 /* No output if the interface is down. */ 1169 if (! d->running) 1170 return; 1171 1172 /* No output if the modem is off. */ 1173 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan)) 1174 return; 1175 1176 if (cx_buf_free (d->chan)) { 1177 /* Get the packet to send. */ 1178#ifdef NETGRAPH 1179 IF_DEQUEUE (&d->hi_queue, m); 1180 if (! m) 1181 IF_DEQUEUE (&d->lo_queue, m); 1182#else 1183 m = sppp_dequeue (d->ifp); 1184#endif 1185 if (! m) 1186 return; 1187#ifndef NETGRAPH 1188 if (d->ifp->if_bpf) 1189 BPF_MTAP (d->ifp, m); 1190#endif 1191 len = m_length (m, NULL); 1192 if (! m->m_next) 1193 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t), 1194 len, 0); 1195 else { 1196 u_char buf [DMABUFSZ]; 1197 m_copydata (m, 0, len, buf); 1198 cx_send_packet (d->chan, buf, len, 0); 1199 } 1200 m_freem (m); 1201 1202 /* Set up transmit timeout, 10 seconds. */ 1203#ifdef NETGRAPH 1204 d->timeout = 10; 1205#else 1206 d->ifp->if_timer = 10; 1207#endif 1208 } 1209#ifndef NETGRAPH 1210 d->ifp->if_flags |= IFF_OACTIVE; 1211#endif 1212} 1213 1214/* 1215 * Start output on the interface. 1216 * Always called on splimp(). 1217 */ 1218static void cx_start (drv_t *d) 1219{ 1220 int s = splhigh (); 1221 if (d->running) { 1222 if (! d->chan->dtr) 1223 cx_set_dtr (d->chan, 1); 1224 if (! d->chan->rts) 1225 cx_set_rts (d->chan, 1); 1226 cx_send (d); 1227 } 1228 splx (s); 1229} 1230 1231/* 1232 * Handle transmit timeouts. 1233 * Recover after lost transmit interrupts. 1234 * Always called on splimp(). 1235 */ 1236static void cx_watchdog (drv_t *d) 1237{ 1238 bdrv_t *bd = d->board->sys; 1239 1240 int s = splhigh (); 1241 CX_LOCK (bd); 1242 CX_DEBUG (d, ("device timeout\n")); 1243 if (d->running) { 1244 cx_setup_chan (d->chan); 1245 cx_start_chan (d->chan, 0, 0); 1246 cx_set_dtr (d->chan, 1); 1247 cx_set_rts (d->chan, 1); 1248 cx_start (d); 1249 } 1250 CX_UNLOCK (bd); 1251 splx (s); 1252} 1253 1254/* 1255 * Transmit callback function. 1256 */ 1257static void cx_transmit (cx_chan_t *c, void *attachment, int len) 1258{ 1259 drv_t *d = c->sys; 1260 1261 if (!d) 1262 return; 1263 1264 if (c->mode == M_ASYNC && d->tty) { 1265 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH); 1266 d->atimeout = 0; 1267 if (d->tty->t_dev) { 1268 d->intr_action |= CX_WRITE; 1269 MY_SOFT_INTR = 1; 1270 swi_sched (cx_fast_ih, 0); 1271 } 1272 return; 1273 } 1274#ifdef NETGRAPH 1275 d->timeout = 0; 1276#else 1277 ++d->ifp->if_opackets; 1278 d->ifp->if_flags &= ~IFF_OACTIVE; 1279 d->ifp->if_timer = 0; 1280#endif 1281 cx_start (d); 1282} 1283 1284/* 1285 * Process the received packet. 1286 */ 1287static void cx_receive (cx_chan_t *c, char *data, int len) 1288{ 1289 drv_t *d = c->sys; 1290 struct mbuf *m; 1291 char *cc = data; 1292#ifdef NETGRAPH 1293 int error; 1294#endif 1295 1296 if (!d) 1297 return; 1298 1299 if (c->mode == M_ASYNC && d->tty) { 1300 if (d->tty->t_state & TS_ISOPEN) { 1301 async_q *q = &d->aqueue; 1302 int size = BF_SZ - 1 - AQ_GSZ (q); 1303 1304 if (len <= 0 && !size) 1305 return; 1306 1307 if (len > size) { 1308 c->ierrs++; 1309 cx_error (c, CX_OVERRUN); 1310 len = size - 1; 1311 } 1312 1313 while (len--) { 1314 AQ_PUSH (q, *(unsigned char *)cc); 1315 cc++; 1316 } 1317 1318 d->intr_action |= CX_READ; 1319 MY_SOFT_INTR = 1; 1320 swi_sched (cx_fast_ih, 0); 1321 } 1322 return; 1323 } 1324 if (! d->running) 1325 return; 1326 1327 m = makembuf (data, len); 1328 if (! m) { 1329 CX_DEBUG (d, ("no memory for packet\n")); 1330#ifndef NETGRAPH 1331 ++d->ifp->if_iqdrops; 1332#endif 1333 return; 1334 } 1335 if (c->debug > 1) 1336 printmbuf (m); 1337#ifdef NETGRAPH 1338 m->m_pkthdr.rcvif = 0; 1339 NG_SEND_DATA_ONLY (error, d->hook, m); 1340#else 1341 ++d->ifp->if_ipackets; 1342 m->m_pkthdr.rcvif = d->ifp; 1343 /* Check if there's a BPF listener on this interface. 1344 * If so, hand off the raw packet to bpf. */ 1345 if (d->ifp->if_bpf) 1346 BPF_TAP (d->ifp, data, len); 1347 IF_ENQUEUE (&d->queue, m); 1348#endif 1349} 1350 1351#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\ 1352 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\ 1353 && (!(tp->t_iflag & PARMRK)\ 1354 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\ 1355 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\ 1356 && linesw[tp->t_line]->l_rint == ttyinput) 1357 1358/* 1359 * Error callback function. 1360 */ 1361static void cx_error (cx_chan_t *c, int data) 1362{ 1363 drv_t *d = c->sys; 1364 async_q *q; 1365 1366 if (!d) 1367 return; 1368 1369 q = &(d->aqueue); 1370 1371 switch (data) { 1372 case CX_FRAME: 1373 CX_DEBUG (d, ("frame error\n")); 1374 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1375 && (AQ_GSZ (q) < BF_SZ - 1) 1376 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1377 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1378 AQ_PUSH (q, TTY_FE); 1379 d->intr_action |= CX_READ; 1380 MY_SOFT_INTR = 1; 1381 swi_sched (cx_fast_ih, 0); 1382 } 1383#ifndef NETGRAPH 1384 else 1385 ++d->ifp->if_ierrors; 1386#endif 1387 break; 1388 case CX_CRC: 1389 CX_DEBUG (d, ("crc error\n")); 1390 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1391 && (AQ_GSZ (q) < BF_SZ - 1) 1392 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1393 || !(d->tty->t_iflag & INPCK) 1394 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1395 AQ_PUSH (q, TTY_PE); 1396 d->intr_action |= CX_READ; 1397 MY_SOFT_INTR = 1; 1398 swi_sched (cx_fast_ih, 0); 1399 } 1400#ifndef NETGRAPH 1401 else 1402 ++d->ifp->if_ierrors; 1403#endif 1404 break; 1405 case CX_OVERRUN: 1406 CX_DEBUG (d, ("overrun error\n")); 1407#ifdef TTY_OE 1408 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1409 && (AQ_GSZ (q) < BF_SZ - 1) 1410 && (!CONDITION((&d->tty->t_termios), (d->tty)))) { 1411 AQ_PUSH (q, TTY_OE); 1412 d->intr_action |= CX_READ; 1413 MY_SOFT_INTR = 1; 1414 swi_sched (cx_fast_ih, 0); 1415 } 1416#endif 1417#ifndef NETGRAPH 1418 else { 1419 ++d->ifp->if_collisions; 1420 ++d->ifp->if_ierrors; 1421 } 1422#endif 1423 break; 1424 case CX_OVERFLOW: 1425 CX_DEBUG (d, ("overflow error\n")); 1426#ifndef NETGRAPH 1427 if (c->mode != M_ASYNC) 1428 ++d->ifp->if_ierrors; 1429#endif 1430 break; 1431 case CX_UNDERRUN: 1432 CX_DEBUG (d, ("underrun error\n")); 1433 if (c->mode != M_ASYNC) { 1434#ifdef NETGRAPH 1435 d->timeout = 0; 1436#else 1437 ++d->ifp->if_oerrors; 1438 d->ifp->if_flags &= ~IFF_OACTIVE; 1439 d->ifp->if_timer = 0; 1440 cx_start (d); 1441#endif 1442 } 1443 break; 1444 case CX_BREAK: 1445 CX_DEBUG (d, ("break error\n")); 1446 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1447 && (AQ_GSZ (q) < BF_SZ - 1) 1448 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1449 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) { 1450 AQ_PUSH (q, TTY_BI); 1451 d->intr_action |= CX_READ; 1452 MY_SOFT_INTR = 1; 1453 swi_sched (cx_fast_ih, 0); 1454 } 1455#ifndef NETGRAPH 1456 else 1457 ++d->ifp->if_ierrors; 1458#endif 1459 break; 1460 default: 1461 CX_DEBUG (d, ("error #%d\n", data)); 1462 } 1463} 1464 1465static int cx_topen (struct tty *tp, struct cdev *dev) 1466{ 1467 bdrv_t *bd; 1468 drv_t *d; 1469 1470 d = tp->t_sc; 1471 CX_DEBUG2 (d, ("cx_open (serial)\n")); 1472 1473 bd = d->board->sys; 1474 1475 if (d->chan->mode != M_ASYNC) 1476 return (EBUSY); 1477 1478 d->open_dev |= 0x2; 1479 CX_LOCK (bd); 1480 cx_start_chan (d->chan, 0, 0); 1481 cx_set_dtr (d->chan, 1); 1482 cx_set_rts (d->chan, 1); 1483 d->cd = cx_get_cd (d->chan); 1484 CX_UNLOCK (bd); 1485 1486 CX_DEBUG2 (d, ("cx_open done\n")); 1487 1488 return 0; 1489} 1490 1491static void cx_tclose (struct tty *tp) 1492{ 1493 drv_t *d; 1494 bdrv_t *bd; 1495 1496 d = tp->t_sc; 1497 CX_DEBUG2 (d, ("cx_close\n")); 1498 bd = d->board->sys; 1499 CX_LOCK (bd); 1500 /* Disable receiver. 1501 * Transmitter continues sending the queued data. */ 1502 cx_enable_receive (d->chan, 0); 1503 CX_UNLOCK (bd); 1504 d->open_dev &= ~0x2; 1505} 1506 1507static int cx_tmodem (struct tty *tp, int sigon, int sigoff) 1508{ 1509 drv_t *d; 1510 bdrv_t *bd; 1511 1512 d = tp->t_sc; 1513 bd = d->board->sys; 1514 1515 CX_LOCK (bd); 1516 if (!sigon && !sigoff) { 1517 if (cx_get_dsr (d->chan)) sigon |= SER_DSR; 1518 if (cx_get_cd (d->chan)) sigon |= SER_DCD; 1519 if (cx_get_cts (d->chan)) sigon |= SER_CTS; 1520 if (d->chan->dtr) sigon |= SER_DTR; 1521 if (d->chan->rts) sigon |= SER_RTS; 1522 CX_UNLOCK (bd); 1523 return sigon; 1524 } 1525 1526 if (sigon & SER_DTR) 1527 cx_set_dtr (d->chan, 1); 1528 if (sigoff & SER_DTR) 1529 cx_set_dtr (d->chan, 0); 1530 if (sigon & SER_RTS) 1531 cx_set_rts (d->chan, 1); 1532 if (sigoff & SER_RTS) 1533 cx_set_rts (d->chan, 0); 1534 CX_UNLOCK (bd); 1535 1536 return (0); 1537} 1538 1539static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td) 1540{ 1541 int unit; 1542 drv_t *d; 1543 1544 d = dev->si_drv1; 1545 unit = d->chan->num; 1546 1547 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n", 1548 unit, flag, mode)); 1549 1550 d->open_dev |= 0x1; 1551 1552 CX_DEBUG2 (d, ("cx_open done\n")); 1553 1554 return 0; 1555} 1556 1557static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td) 1558{ 1559 drv_t *d; 1560 1561 d = dev->si_drv1; 1562 CX_DEBUG2 (d, ("cx_close\n")); 1563 d->open_dev &= ~0x1; 1564 return 0; 1565} 1566 1567static int cx_modem_status (drv_t *d) 1568{ 1569 bdrv_t *bd = d->board->sys; 1570 int status = 0, s = splhigh (); 1571 CX_LOCK (bd); 1572 /* Already opened by someone or network interface is up? */ 1573 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1574 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running)) 1575 status = TIOCM_LE; /* always enabled while open */ 1576 1577 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR; 1578 if (cx_get_cd (d->chan)) status |= TIOCM_CD; 1579 if (cx_get_cts (d->chan)) status |= TIOCM_CTS; 1580 if (d->chan->dtr) status |= TIOCM_DTR; 1581 if (d->chan->rts) status |= TIOCM_RTS; 1582 CX_UNLOCK (bd); 1583 splx (s); 1584 return status; 1585} 1586 1587static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1588{ 1589 drv_t *d; 1590 bdrv_t *bd; 1591 cx_chan_t *c; 1592 struct serial_statistics *st; 1593 int error, s; 1594 char mask[16]; 1595 1596 d = dev->si_drv1; 1597 c = d->chan; 1598 1599 bd = d->board->sys; 1600 1601 switch (cmd) { 1602 case SERIAL_GETREGISTERED: 1603 CX_DEBUG2 (d, ("ioctl: getregistered\n")); 1604 bzero (mask, sizeof(mask)); 1605 for (s=0; s<NCX*NCHAN; ++s) 1606 if (channel [s]) 1607 mask [s/8] |= 1 << (s & 7); 1608 bcopy (mask, data, sizeof (mask)); 1609 return 0; 1610 1611 case SERIAL_GETPORT: 1612 CX_DEBUG2 (d, ("ioctl: getport\n")); 1613 s = splhigh (); 1614 CX_LOCK (bd); 1615 *(int *)data = cx_get_port (c); 1616 CX_UNLOCK (bd); 1617 splx (s); 1618 if (*(int *)data<0) 1619 return (EINVAL); 1620 else 1621 return 0; 1622 1623 case SERIAL_SETPORT: 1624 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1625 /* Only for superuser! */ 1626 error = suser (td); 1627 if (error) 1628 return error; 1629 1630 s = splhigh (); 1631 CX_LOCK (bd); 1632 cx_set_port (c, *(int *)data); 1633 CX_UNLOCK (bd); 1634 splx (s); 1635 return 0; 1636 1637#ifndef NETGRAPH 1638 case SERIAL_GETPROTO: 1639 CX_DEBUG2 (d, ("ioctl: getproto\n")); 1640 s = splhigh (); 1641 CX_LOCK (bd); 1642 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" : 1643 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" : 1644 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp"); 1645 CX_UNLOCK (bd); 1646 splx (s); 1647 return 0; 1648 1649 case SERIAL_SETPROTO: 1650 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1651 /* Only for superuser! */ 1652 error = suser (td); 1653 if (error) 1654 return error; 1655 if (c->mode == M_ASYNC) 1656 return EBUSY; 1657 if (d->ifp->if_flags & IFF_RUNNING) 1658 return EBUSY; 1659 if (! strcmp ("cisco", (char*)data)) { 1660 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR); 1661 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1662 d->ifp->if_flags |= PP_CISCO; 1663 } else if (! strcmp ("fr", (char*)data)) { 1664 d->ifp->if_flags &= ~(PP_CISCO); 1665 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE; 1666 } else if (! strcmp ("ppp", (char*)data)) { 1667 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE); 1668 d->ifp->if_flags &= ~(PP_CISCO); 1669 } else 1670 return EINVAL; 1671 return 0; 1672 1673 case SERIAL_GETKEEPALIVE: 1674 CX_DEBUG2 (d, ("ioctl: getkeepalive\n")); 1675 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1676 (d->ifp->if_flags & PP_CISCO) || 1677 (c->mode == M_ASYNC)) 1678 return EINVAL; 1679 s = splhigh (); 1680 CX_LOCK (bd); 1681 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0; 1682 CX_UNLOCK (bd); 1683 splx (s); 1684 return 0; 1685 1686 case SERIAL_SETKEEPALIVE: 1687 CX_DEBUG2 (d, ("ioctl: setkeepalive\n")); 1688 /* Only for superuser! */ 1689 error = suser (td); 1690 if (error) 1691 return error; 1692 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1693 (d->ifp->if_flags & PP_CISCO)) 1694 return EINVAL; 1695 s = splhigh (); 1696 CX_LOCK (bd); 1697 if (*(int*)data) 1698 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1699 else 1700 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE; 1701 CX_UNLOCK (bd); 1702 splx (s); 1703 return 0; 1704#endif /*NETGRAPH*/ 1705 1706 case SERIAL_GETMODE: 1707 CX_DEBUG2 (d, ("ioctl: getmode\n")); 1708 s = splhigh (); 1709 CX_LOCK (bd); 1710 *(int*)data = (c->mode == M_ASYNC) ? 1711 SERIAL_ASYNC : SERIAL_HDLC; 1712 CX_UNLOCK (bd); 1713 splx (s); 1714 return 0; 1715 1716 case SERIAL_SETMODE: 1717 CX_DEBUG2 (d, ("ioctl: setmode\n")); 1718 /* Only for superuser! */ 1719 error = suser (td); 1720 if (error) 1721 return error; 1722 1723 /* Somebody is waiting for carrier? */ 1724 if (d->lock) 1725 return EBUSY; 1726 /* /dev/ttyXX is already opened by someone? */ 1727 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1728 (d->open_dev|0x2)) 1729 return EBUSY; 1730 /* Network interface is up? 1731 * Cannot change to async mode. */ 1732 if (c->mode != M_ASYNC && d->running && 1733 (*(int*)data == SERIAL_ASYNC)) 1734 return EBUSY; 1735 1736 s = splhigh (); 1737 CX_LOCK (bd); 1738 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) { 1739 cx_set_mode (c, M_ASYNC); 1740 cx_enable_receive (c, 0); 1741 cx_enable_transmit (c, 0); 1742 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) { 1743 cx_set_mode (c, M_HDLC); 1744 cx_enable_receive (c, 1); 1745 cx_enable_transmit (c, 1); 1746 } 1747 CX_UNLOCK (bd); 1748 splx (s); 1749 return 0; 1750 1751 case SERIAL_GETSTAT: 1752 CX_DEBUG2 (d, ("ioctl: getestat\n")); 1753 st = (struct serial_statistics*) data; 1754 s = splhigh (); 1755 CX_LOCK (bd); 1756 st->rintr = c->rintr; 1757 st->tintr = c->tintr; 1758 st->mintr = c->mintr; 1759 st->ibytes = c->ibytes; 1760 st->ipkts = c->ipkts; 1761 st->ierrs = c->ierrs; 1762 st->obytes = c->obytes; 1763 st->opkts = c->opkts; 1764 st->oerrs = c->oerrs; 1765 CX_UNLOCK (bd); 1766 splx (s); 1767 return 0; 1768 1769 case SERIAL_CLRSTAT: 1770 CX_DEBUG2 (d, ("ioctl: clrstat\n")); 1771 /* Only for superuser! */ 1772 error = suser (td); 1773 if (error) 1774 return error; 1775 s = splhigh (); 1776 CX_LOCK (bd); 1777 c->rintr = 0; 1778 c->tintr = 0; 1779 c->mintr = 0; 1780 c->ibytes = 0; 1781 c->ipkts = 0; 1782 c->ierrs = 0; 1783 c->obytes = 0; 1784 c->opkts = 0; 1785 c->oerrs = 0; 1786 CX_UNLOCK (bd); 1787 splx (s); 1788 return 0; 1789 1790 case SERIAL_GETBAUD: 1791 CX_DEBUG2 (d, ("ioctl: getbaud\n")); 1792 if (c->mode == M_ASYNC) 1793 return EINVAL; 1794 s = splhigh (); 1795 CX_LOCK (bd); 1796 *(long*)data = cx_get_baud(c); 1797 CX_UNLOCK (bd); 1798 splx (s); 1799 return 0; 1800 1801 case SERIAL_SETBAUD: 1802 CX_DEBUG2 (d, ("ioctl: setbaud\n")); 1803 /* Only for superuser! */ 1804 error = suser (td); 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_baud (c, *(long*)data); 1812 CX_UNLOCK (bd); 1813 splx (s); 1814 return 0; 1815 1816 case SERIAL_GETLOOP: 1817 CX_DEBUG2 (d, ("ioctl: getloop\n")); 1818 if (c->mode == M_ASYNC) 1819 return EINVAL; 1820 s = splhigh (); 1821 CX_LOCK (bd); 1822 *(int*)data = cx_get_loop (c); 1823 CX_UNLOCK (bd); 1824 splx (s); 1825 return 0; 1826 1827 case SERIAL_SETLOOP: 1828 CX_DEBUG2 (d, ("ioctl: setloop\n")); 1829 /* Only for superuser! */ 1830 error = suser (td); 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_loop (c, *(int*)data); 1838 CX_UNLOCK (bd); 1839 splx (s); 1840 return 0; 1841 1842 case SERIAL_GETDPLL: 1843 CX_DEBUG2 (d, ("ioctl: getdpll\n")); 1844 if (c->mode == M_ASYNC) 1845 return EINVAL; 1846 s = splhigh (); 1847 CX_LOCK (bd); 1848 *(int*)data = cx_get_dpll (c); 1849 CX_UNLOCK (bd); 1850 splx (s); 1851 return 0; 1852 1853 case SERIAL_SETDPLL: 1854 CX_DEBUG2 (d, ("ioctl: setdpll\n")); 1855 /* Only for superuser! */ 1856 error = suser (td); 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_dpll (c, *(int*)data); 1864 CX_UNLOCK (bd); 1865 splx (s); 1866 return 0; 1867 1868 case SERIAL_GETNRZI: 1869 CX_DEBUG2 (d, ("ioctl: getnrzi\n")); 1870 if (c->mode == M_ASYNC) 1871 return EINVAL; 1872 s = splhigh (); 1873 CX_LOCK (bd); 1874 *(int*)data = cx_get_nrzi (c); 1875 CX_UNLOCK (bd); 1876 splx (s); 1877 return 0; 1878 1879 case SERIAL_SETNRZI: 1880 CX_DEBUG2 (d, ("ioctl: setnrzi\n")); 1881 /* Only for superuser! */ 1882 error = suser (td); 1883 if (error) 1884 return error; 1885 if (c->mode == M_ASYNC) 1886 return EINVAL; 1887 s = splhigh (); 1888 CX_LOCK (bd); 1889 cx_set_nrzi (c, *(int*)data); 1890 CX_UNLOCK (bd); 1891 splx (s); 1892 return 0; 1893 1894 case SERIAL_GETDEBUG: 1895 CX_DEBUG2 (d, ("ioctl: getdebug\n")); 1896 s = splhigh (); 1897 CX_LOCK (bd); 1898 *(int*)data = c->debug; 1899 CX_UNLOCK (bd); 1900 splx (s); 1901 return 0; 1902 1903 case SERIAL_SETDEBUG: 1904 CX_DEBUG2 (d, ("ioctl: setdebug\n")); 1905 /* Only for superuser! */ 1906 error = suser (td); 1907 if (error) 1908 return error; 1909 s = splhigh (); 1910 CX_LOCK (bd); 1911 c->debug = *(int*)data; 1912 CX_UNLOCK (bd); 1913 splx (s); 1914#ifndef NETGRAPH 1915 if (d->chan->debug) 1916 d->ifp->if_flags |= IFF_DEBUG; 1917 else 1918 d->ifp->if_flags &= (~IFF_DEBUG); 1919#endif 1920 return 0; 1921 } 1922 1923 switch (cmd) { 1924 case TIOCSDTR: /* Set DTR */ 1925 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n")); 1926 s = splhigh (); 1927 CX_LOCK (bd); 1928 cx_set_dtr (c, 1); 1929 CX_UNLOCK (bd); 1930 splx (s); 1931 return 0; 1932 1933 case TIOCCDTR: /* Clear DTR */ 1934 CX_DEBUG2 (d, ("ioctl: tioccdtr\n")); 1935 s = splhigh (); 1936 CX_LOCK (bd); 1937 cx_set_dtr (c, 0); 1938 CX_UNLOCK (bd); 1939 splx (s); 1940 return 0; 1941 1942 case TIOCMSET: /* Set DTR/RTS */ 1943 CX_DEBUG2 (d, ("ioctl: tiocmset\n")); 1944 s = splhigh (); 1945 CX_LOCK (bd); 1946 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0); 1947 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0); 1948 CX_UNLOCK (bd); 1949 splx (s); 1950 return 0; 1951 1952 case TIOCMBIS: /* Add DTR/RTS */ 1953 CX_DEBUG2 (d, ("ioctl: tiocmbis\n")); 1954 s = splhigh (); 1955 CX_LOCK (bd); 1956 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1); 1957 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1); 1958 CX_UNLOCK (bd); 1959 splx (s); 1960 return 0; 1961 1962 case TIOCMBIC: /* Clear DTR/RTS */ 1963 CX_DEBUG2 (d, ("ioctl: tiocmbic\n")); 1964 s = splhigh (); 1965 CX_LOCK (bd); 1966 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0); 1967 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0); 1968 CX_UNLOCK (bd); 1969 splx (s); 1970 return 0; 1971 1972 case TIOCMGET: /* Get modem status */ 1973 CX_DEBUG2 (d, ("ioctl: tiocmget\n")); 1974 *(int*)data = cx_modem_status (d); 1975 return 0; 1976 1977 } 1978 1979 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd)); 1980 return ENOTTY; 1981} 1982 1983void cx_softintr (void *unused) 1984{ 1985 drv_t *d; 1986 bdrv_t *bd; 1987 async_q *q; 1988 int i, s, ic, k; 1989 while (MY_SOFT_INTR) { 1990 MY_SOFT_INTR = 0; 1991 for (i=0; i<NCX*NCHAN; ++i) { 1992 d = channel [i]; 1993 if (!d || !d->chan || d->chan->type == T_NONE 1994 || d->chan->mode != M_ASYNC || !d->tty 1995 || !d->tty->t_dev) 1996 continue; 1997 bd = d->board->sys; 1998 s = splhigh (); 1999 CX_LOCK (bd); 2000 if (d->intr_action & CX_READ) { 2001 q = &(d->aqueue); 2002 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) { 2003 k = AQ_GSZ(q); 2004 if (d->tty->t_rawq.c_cc + k > 2005 d->tty->t_ihiwat 2006 && (d->tty->t_cflag & CRTS_IFLOW 2007 || d->tty->t_iflag & IXOFF) 2008 && !(d->tty->t_state & TS_TBLOCK)) 2009 ttyblock(d->tty); 2010 d->tty->t_rawcc += k; 2011 while (k>0) { 2012 k--; 2013 AQ_POP (q, ic); 2014 CX_UNLOCK (bd); 2015 splx (s); 2016 putc (ic, &d->tty->t_rawq); 2017 s = splhigh (); 2018 CX_LOCK (bd); 2019 } 2020 ttwakeup(d->tty); 2021 if (d->tty->t_state & TS_TTSTOP 2022 && (d->tty->t_iflag & IXANY 2023 || d->tty->t_cc[VSTART] == 2024 d->tty->t_cc[VSTOP])) { 2025 d->tty->t_state &= ~TS_TTSTOP; 2026 d->tty->t_lflag &= ~FLUSHO; 2027 d->intr_action |= CX_WRITE; 2028 } 2029 } else { 2030 while (q->end != q->beg) { 2031 AQ_POP (q, ic); 2032 CX_UNLOCK (bd); 2033 splx (s); 2034 ttyld_rint (d->tty, ic); 2035 s = splhigh (); 2036 CX_LOCK (bd); 2037 } 2038 } 2039 d->intr_action &= ~CX_READ; 2040 } 2041 splx (s); 2042 CX_UNLOCK (bd); 2043 2044 s = splhigh (); 2045 CX_LOCK (bd); 2046 if (d->intr_action & CX_WRITE) { 2047 if (d->tty->t_line) 2048 ttyld_start (d->tty); 2049 else 2050 cx_oproc (d->tty); 2051 d->intr_action &= ~CX_WRITE; 2052 } 2053 CX_UNLOCK (bd); 2054 splx (s); 2055 2056 } 2057 } 2058} 2059 2060/* 2061 * Fill transmitter buffer with data. 2062 */ 2063static void cx_oproc (struct tty *tp) 2064{ 2065 int s, k; 2066 drv_t *d; 2067 bdrv_t *bd; 2068 static u_char buf[DMABUFSZ]; 2069 u_char *p; 2070 u_short len = 0, sublen = 0; 2071 2072 d = tp->t_sc; 2073 bd = d->board->sys; 2074 2075 CX_DEBUG2 (d, ("cx_oproc\n")); 2076 2077 s = splhigh (); 2078 CX_LOCK (bd); 2079 2080 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts) 2081 cx_set_rts (d->chan, 0); 2082 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts) 2083 cx_set_rts (d->chan, 1); 2084 2085 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) { 2086 /* Start transmitter. */ 2087 cx_enable_transmit (d->chan, 1); 2088 2089 /* Is it busy? */ 2090 if (! cx_buf_free (d->chan)) { 2091 tp->t_state |= TS_BUSY; 2092 CX_UNLOCK (bd); 2093 splx (s); 2094 return; 2095 } 2096 if (tp->t_iflag & IXOFF) { 2097 p = (buf + (DMABUFSZ/2)); 2098 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2099 k = sublen; 2100 while (k--) { 2101 /* Send XON/XOFF out of band. */ 2102 if (*p == tp->t_cc[VSTOP]) { 2103 cx_xflow_ctl (d->chan, 0); 2104 p++; 2105 continue; 2106 } 2107 if (*p == tp->t_cc[VSTART]) { 2108 cx_xflow_ctl (d->chan, 1); 2109 p++; 2110 continue; 2111 } 2112 buf[len] = *p; 2113 len++; 2114 p++; 2115 } 2116 } else { 2117 p = buf; 2118 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2119 } 2120 if (len) { 2121 cx_send_packet (d->chan, buf, len, 0); 2122 tp->t_state |= TS_BUSY; 2123 d->atimeout = 10; 2124 CX_DEBUG2 (d, ("out %d bytes\n", len)); 2125 } 2126 } 2127 ttwwakeup (tp); 2128 CX_UNLOCK (bd); 2129 splx (s); 2130} 2131 2132static int cx_param (struct tty *tp, struct termios *t) 2133{ 2134 drv_t *d; 2135 bdrv_t *bd; 2136 int s, bits, parity; 2137 2138 d = tp->t_sc; 2139 bd = d->board->sys; 2140 2141 s = splhigh (); 2142 CX_LOCK (bd); 2143 if (t->c_ospeed == 0) { 2144 /* Clear DTR and RTS. */ 2145 cx_set_dtr (d->chan, 0); 2146 CX_UNLOCK (bd); 2147 splx (s); 2148 CX_DEBUG2 (d, ("cx_param (hangup)\n")); 2149 return 0; 2150 } 2151 CX_DEBUG2 (d, ("cx_param\n")); 2152 2153 /* Check requested parameters. */ 2154 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) { 2155 CX_UNLOCK (bd); 2156 splx (s); 2157 return EINVAL; 2158 } 2159 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) { 2160 CX_UNLOCK (bd); 2161 splx (s); 2162 return EINVAL; 2163 } 2164 2165 /* And copy them to tty and channel structures. */ 2166 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed; 2167 tp->t_cflag = t->c_cflag; 2168 2169 /* Set character length and parity mode. */ 2170 switch (t->c_cflag & CSIZE) { 2171 default: 2172 case CS8: bits = 8; break; 2173 case CS7: bits = 7; break; 2174 case CS6: bits = 6; break; 2175 case CS5: bits = 5; break; 2176 } 2177 2178 parity = ((t->c_cflag & PARENB) ? 1 : 0) * 2179 (1 + ((t->c_cflag & PARODD) ? 0 : 1)); 2180 2181 /* Set current channel number. */ 2182 if (! d->chan->dtr) 2183 cx_set_dtr (d->chan, 1); 2184 2185 ttyldoptim (tp); 2186 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB), 2187 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS), 2188 (t->c_iflag & IXON), (t->c_iflag & IXANY), 2189 t->c_cc[VSTART], t->c_cc[VSTOP]); 2190 CX_UNLOCK (bd); 2191 splx (s); 2192 return 0; 2193} 2194 2195/* 2196 * Stop output on a line 2197 */ 2198static void cx_stop (struct tty *tp, int flag) 2199{ 2200 drv_t *d; 2201 bdrv_t *bd; 2202 int s; 2203 2204 d = tp->t_sc; 2205 bd = d->board->sys; 2206 2207 s = splhigh (); 2208 CX_LOCK (bd); 2209 if (tp->t_state & TS_BUSY) { 2210 /* Stop transmitter */ 2211 CX_DEBUG2 (d, ("cx_stop\n")); 2212 cx_transmitter_ctl (d->chan, 0); 2213 } 2214 CX_UNLOCK (bd); 2215 splx (s); 2216} 2217 2218/* 2219 * Process the (delayed) carrier signal setup. 2220 */ 2221static void cx_carrier (void *arg) 2222{ 2223 drv_t *d = arg; 2224 bdrv_t *bd = d->board->sys; 2225 cx_chan_t *c = d->chan; 2226 int s, cd; 2227 2228 s = splhigh (); 2229 CX_LOCK (bd); 2230 cd = cx_get_cd (c); 2231 if (d->cd != cd) { 2232 if (cd) { 2233 CX_DEBUG (d, ("carrier on\n")); 2234 d->cd = 1; 2235 CX_UNLOCK (bd); 2236 splx (s); 2237 if (d->tty) 2238 ttyld_modem(d->tty, 1); 2239 } else { 2240 CX_DEBUG (d, ("carrier loss\n")); 2241 d->cd = 0; 2242 CX_UNLOCK (bd); 2243 splx (s); 2244 if (d->tty) 2245 ttyld_modem(d->tty, 0); 2246 } 2247 } else { 2248 CX_UNLOCK (bd); 2249 splx (s); 2250 } 2251} 2252 2253/* 2254 * Modem signal callback function. 2255 */ 2256static void cx_modem (cx_chan_t *c) 2257{ 2258 drv_t *d = c->sys; 2259 2260 if (!d || c->mode != M_ASYNC) 2261 return; 2262 /* Handle carrier detect/loss. */ 2263 /* Carrier changed - delay processing DCD for a while 2264 * to give both sides some time to initialize. */ 2265 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d); 2266} 2267 2268static struct cdevsw cx_cdevsw = { 2269 .d_version = D_VERSION, 2270 .d_open = cx_open, 2271 .d_close = cx_close, 2272 .d_ioctl = cx_ioctl, 2273 .d_name = "cx", 2274 .d_flags = D_TTY | D_NEEDGIANT, 2275}; 2276 2277#ifdef NETGRAPH 2278static int ng_cx_constructor (node_p node) 2279{ 2280 drv_t *d = NG_NODE_PRIVATE (node); 2281 CX_DEBUG (d, ("Constructor\n")); 2282 return EINVAL; 2283} 2284 2285static int ng_cx_newhook (node_p node, hook_p hook, const char *name) 2286{ 2287 int s; 2288 drv_t *d = NG_NODE_PRIVATE (node); 2289 bdrv_t *bd = d->board->sys; 2290 2291 if (d->chan->mode == M_ASYNC) 2292 return EINVAL; 2293 2294 /* Attach debug hook */ 2295 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) { 2296 NG_HOOK_SET_PRIVATE (hook, NULL); 2297 d->debug_hook = hook; 2298 return 0; 2299 } 2300 2301 /* Check for raw hook */ 2302 if (strcmp (name, NG_CX_HOOK_RAW) != 0) 2303 return EINVAL; 2304 2305 NG_HOOK_SET_PRIVATE (hook, d); 2306 d->hook = hook; 2307 s = splhigh (); 2308 CX_LOCK (bd); 2309 cx_up (d); 2310 CX_UNLOCK (bd); 2311 splx (s); 2312 return 0; 2313} 2314 2315static int print_modems (char *s, cx_chan_t *c, int need_header) 2316{ 2317 int status = cx_modem_status (c->sys); 2318 int length = 0; 2319 2320 if (need_header) 2321 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n"); 2322 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n", 2323 status & TIOCM_LE ? "On" : "-", 2324 status & TIOCM_DTR ? "On" : "-", 2325 status & TIOCM_DSR ? "On" : "-", 2326 status & TIOCM_RTS ? "On" : "-", 2327 status & TIOCM_CTS ? "On" : "-", 2328 status & TIOCM_CD ? "On" : "-"); 2329 return length; 2330} 2331 2332static int print_stats (char *s, cx_chan_t *c, int need_header) 2333{ 2334 int length = 0; 2335 2336 if (need_header) 2337 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n"); 2338 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n", 2339 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts, 2340 c->ierrs, c->obytes, c->opkts, c->oerrs); 2341 return length; 2342} 2343 2344static int print_chan (char *s, cx_chan_t *c) 2345{ 2346 drv_t *d = c->sys; 2347 int length = 0; 2348 2349 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num); 2350 if (d->chan->debug) 2351 length += sprintf (s + length, " debug=%d", d->chan->debug); 2352 2353 if (cx_get_baud (c)) 2354 length += sprintf (s + length, " %ld", cx_get_baud (c)); 2355 else 2356 length += sprintf (s + length, " extclock"); 2357 2358 if (c->mode == M_HDLC) { 2359 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off"); 2360 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off"); 2361 } 2362 2363 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n"); 2364 return length; 2365} 2366 2367static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook) 2368{ 2369 drv_t *d = NG_NODE_PRIVATE (node); 2370 struct ng_mesg *msg; 2371 struct ng_mesg *resp = NULL; 2372 int error = 0; 2373 2374 if (!d) 2375 return EINVAL; 2376 2377 CX_DEBUG (d, ("Rcvmsg\n")); 2378 NGI_GET_MSG (item, msg); 2379 switch (msg->header.typecookie) { 2380 default: 2381 error = EINVAL; 2382 break; 2383 2384 case NGM_CX_COOKIE: 2385 printf ("Don't forget to implement\n"); 2386 error = EINVAL; 2387 break; 2388 2389 case NGM_GENERIC_COOKIE: 2390 switch (msg->header.cmd) { 2391 default: 2392 error = EINVAL; 2393 break; 2394 2395 case NGM_TEXT_STATUS: { 2396 char *s; 2397 int l = 0; 2398 int dl = sizeof (struct ng_mesg) + 730; 2399 2400 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT); 2401 if (! resp) { 2402 error = ENOMEM; 2403 break; 2404 } 2405 bzero (resp, dl); 2406 s = (resp)->data; 2407 l += print_chan (s + l, d->chan); 2408 l += print_stats (s + l, d->chan, 1); 2409 l += print_modems (s + l, d->chan, 1); 2410 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRLEN); 2411 } 2412 break; 2413 } 2414 break; 2415 } 2416 NG_RESPOND_MSG (error, node, item, resp); 2417 NG_FREE_MSG (msg); 2418 return error; 2419} 2420 2421static int ng_cx_rcvdata (hook_p hook, item_p item) 2422{ 2423 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook)); 2424 struct mbuf *m; 2425 struct ng_tag_prio *ptag; 2426 bdrv_t *bd; 2427 struct ifqueue *q; 2428 int s; 2429 2430 NGI_GET_M (item, m); 2431 NG_FREE_ITEM (item); 2432 if (! NG_HOOK_PRIVATE (hook) || ! d) { 2433 NG_FREE_M (m); 2434 return ENETDOWN; 2435 } 2436 2437 bd = d->board->sys; 2438 /* Check for high priority data */ 2439 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE, 2440 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) ) 2441 q = &d->hi_queue; 2442 else 2443 q = &d->lo_queue; 2444 2445 s = splhigh (); 2446 CX_LOCK (bd); 2447 IF_LOCK (q); 2448 if (_IF_QFULL (q)) { 2449 _IF_DROP (q); 2450 IF_UNLOCK (q); 2451 CX_UNLOCK (bd); 2452 splx (s); 2453 NG_FREE_M (m); 2454 return ENOBUFS; 2455 } 2456 _IF_ENQUEUE (q, m); 2457 IF_UNLOCK (q); 2458 cx_start (d); 2459 CX_UNLOCK (bd); 2460 splx (s); 2461 return 0; 2462} 2463 2464static int ng_cx_rmnode (node_p node) 2465{ 2466 drv_t *d = NG_NODE_PRIVATE (node); 2467 bdrv_t *bd; 2468 2469 CX_DEBUG (d, ("Rmnode\n")); 2470 if (d && d->running) { 2471 int s = splhigh (); 2472 bd = d->board->sys; 2473 CX_LOCK (bd); 2474 cx_down (d); 2475 CX_UNLOCK (bd); 2476 splx (s); 2477 } 2478#ifdef KLD_MODULE 2479 if (node->nd_flags & NGF_REALLY_DIE) { 2480 NG_NODE_SET_PRIVATE (node, NULL); 2481 NG_NODE_UNREF (node); 2482 } 2483 NG_NODE_REVIVE(node); /* Persistant node */ 2484#endif 2485 return 0; 2486} 2487 2488static void ng_cx_watchdog (void *arg) 2489{ 2490 drv_t *d = arg; 2491 2492 if (d->timeout == 1) 2493 cx_watchdog (d); 2494 if (d->timeout) 2495 d->timeout--; 2496 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2497} 2498 2499static int ng_cx_connect (hook_p hook) 2500{ 2501 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2502 2503 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2504 return 0; 2505} 2506 2507static int ng_cx_disconnect (hook_p hook) 2508{ 2509 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2510 bdrv_t *bd = d->board->sys; 2511 int s; 2512 2513 s = splhigh (); 2514 CX_LOCK (bd); 2515 if (NG_HOOK_PRIVATE (hook)) 2516 cx_down (d); 2517 CX_UNLOCK (bd); 2518 splx (s); 2519 /* If we were wait it than it reasserted now, just stop it. */ 2520 if (!callout_drain (&d->timeout_handle)) 2521 callout_stop (&d->timeout_handle); 2522 return 0; 2523} 2524#endif /*NETGRAPH*/ 2525 2526static int cx_modevent (module_t mod, int type, void *unused) 2527{ 2528 static int load_count = 0; 2529 2530 if (!debug_mpsafenet && cx_mpsafenet) { 2531 printf ("WORNING! Network stack is not MPSAFE. " 2532 "Turning off debug.cx.mpsafenet.\n"); 2533 cx_mpsafenet = 0; 2534 } 2535 if (cx_mpsafenet) 2536 cx_cdevsw.d_flags &= ~D_NEEDGIANT; 2537 2538 switch (type) { 2539 case MOD_LOAD: 2540#ifdef NETGRAPH 2541 if (ng_newtype (&typestruct)) 2542 printf ("Failed to register ng_cx\n"); 2543#endif 2544 ++load_count; 2545 2546 callout_init (&timeout_handle, cx_mpsafenet?CALLOUT_MPSAFE:0); 2547 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 2548 /* Software interrupt. */ 2549 swi_add(&tty_ithd, "cx", cx_softintr, NULL, SWI_TTY, 2550 (cx_mpsafenet?INTR_MPSAFE:0), &cx_fast_ih); 2551 break; 2552 case MOD_UNLOAD: 2553 if (load_count == 1) { 2554 printf ("Removing device entry for Sigma\n"); 2555#ifdef NETGRAPH 2556 ng_rmtype (&typestruct); 2557#endif 2558 } 2559 /* If we were wait it than it reasserted now, just stop it. */ 2560 if (!callout_drain (&timeout_handle)) 2561 callout_stop (&timeout_handle); 2562 ithread_remove_handler (cx_fast_ih); 2563 --load_count; 2564 break; 2565 case MOD_SHUTDOWN: 2566 break; 2567 } 2568 return 0; 2569} 2570 2571#ifdef NETGRAPH 2572static struct ng_type typestruct = { 2573 .version = NG_ABI_VERSION, 2574 .name = NG_CX_NODE_TYPE, 2575 .constructor = ng_cx_constructor, 2576 .rcvmsg = ng_cx_rcvmsg, 2577 .shutdown = ng_cx_rmnode, 2578 .newhook = ng_cx_newhook, 2579 .connect = ng_cx_connect, 2580 .rcvdata = ng_cx_rcvdata, 2581 .disconnect = ng_cx_disconnect, 2582}; 2583#endif /*NETGRAPH*/ 2584 2585#ifdef NETGRAPH 2586MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 2587#else 2588MODULE_DEPEND (isa_cx, sppp, 1, 1, 1); 2589#endif 2590DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL); 2591MODULE_VERSION (cx, 1); 2592