if_cx.c revision 147859
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 147859 2005-07-09 14:23:42Z 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 IFF_NEEDSGIANT; 858 d->ifp->if_ioctl = cx_sioctl; 859 d->ifp->if_start = cx_ifstart; 860 d->ifp->if_watchdog = cx_ifwatchdog; 861 d->ifp->if_init = cx_initialize; 862 d->queue.ifq_maxlen = 2; 863 mtx_init (&d->queue.ifq_mtx, "cx_queue", NULL, MTX_DEF); 864 sppp_attach (d->ifp); 865 if_attach (d->ifp); 866 IFP2SP(d->ifp)->pp_tlf = cx_tlf; 867 IFP2SP(d->ifp)->pp_tls = cx_tls; 868 /* If BPF is in the kernel, call the attach for it. 869 * Size of PPP header is 4 bytes. */ 870 bpfattach (d->ifp, DLT_PPP, 4); 871#endif /*NETGRAPH*/ 872 } 873 d->tty = ttyalloc (); 874 d->tty->t_open = cx_topen; 875 d->tty->t_close = cx_tclose; 876 d->tty->t_param = cx_param; 877 d->tty->t_stop = cx_stop; 878 d->tty->t_modem = cx_tmodem; 879 d->tty->t_sc = d; 880 CX_LOCK (bd); 881 cx_start_chan (c, d->dmamem.virt, d->dmamem.phys); 882 cx_register_receive (c, &cx_receive); 883 cx_register_transmit (c, &cx_transmit); 884 cx_register_error (c, &cx_error); 885 cx_register_modem (c, &cx_modem); 886 CX_UNLOCK (bd); 887 888 ttycreate(d->tty, NULL, 0, MINOR_CALLOUT, 889 "x%r%r", b->num, c->num); 890 d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num); 891 d->devt->si_drv1 = d; 892 callout_init (&d->dcd_timeout_handle, 893 cx_mpsafenet ? CALLOUT_MPSAFE : 0); 894 } 895 splx (s); 896 897 return 0; 898} 899 900static int cx_detach (device_t dev) 901{ 902 bdrv_t *bd = device_get_softc (dev); 903 cx_board_t *b = bd->board; 904 cx_chan_t *c; 905 int s; 906 907 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized")); 908 909 s = splhigh (); 910 CX_LOCK (bd); 911 /* Check if the device is busy (open). */ 912 for (c = b->chan; c < b->chan + NCHAN; ++c) { 913 drv_t *d = (drv_t*) c->sys; 914 915 if (!d || d->chan->type == T_NONE) 916 continue; 917 if (d->lock) { 918 CX_UNLOCK (bd); 919 splx (s); 920 return EBUSY; 921 } 922 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 923 (d->open_dev|0x2)) { 924 CX_UNLOCK (bd); 925 splx (s); 926 return EBUSY; 927 } 928 if (d->running) { 929 CX_UNLOCK (bd); 930 splx (s); 931 return EBUSY; 932 } 933 } 934 935 /* Deactivate the timeout routine. And soft interrupt*/ 936 callout_stop (&led_timo[b->num]); 937 938 for (c = b->chan; c < b->chan + NCHAN; ++c) { 939 drv_t *d = c->sys; 940 941 if (!d || d->chan->type == T_NONE) 942 continue; 943 944 callout_stop (&d->dcd_timeout_handle); 945 } 946 CX_UNLOCK (bd); 947 bus_teardown_intr (dev, bd->irq_res, bd->intrhand); 948 bus_deactivate_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 949 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 950 951 bus_deactivate_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 952 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 953 954 bus_deactivate_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->irq_res); 955 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res); 956 957 CX_LOCK (bd); 958 cx_close_board (b); 959 960 /* Detach the interfaces, free buffer memory. */ 961 for (c = b->chan; c < b->chan + NCHAN; ++c) { 962 drv_t *d = (drv_t*) c->sys; 963 964 if (!d || d->chan->type == T_NONE) 965 continue; 966 967 if (d->tty) { 968 ttyfree (d->tty); 969 d->tty = NULL; 970 } 971 972#ifdef NETGRAPH 973 if (d->node) { 974 ng_rmnode_self (d->node); 975 NG_NODE_UNREF (d->node); 976 d->node = NULL; 977 } 978 mtx_destroy (&d->lo_queue.ifq_mtx); 979 mtx_destroy (&d->hi_queue.ifq_mtx); 980#else 981 /* Detach from the packet filter list of interfaces. */ 982 bpfdetach (d->ifp); 983 /* Detach from the sync PPP list. */ 984 sppp_detach (d->ifp); 985 986 if_detach (d->ifp); 987 if_free(d->ifp); 988 /* XXXRIK: check interconnection with irq handler */ 989 IF_DRAIN (&d->queue); 990 mtx_destroy (&d->queue.ifq_mtx); 991#endif 992 destroy_dev (d->devt); 993 } 994 995 cx_led_off (b); 996 CX_UNLOCK (bd); 997 callout_drain (&led_timo[b->num]); 998 for (c = b->chan; c < b->chan + NCHAN; ++c) { 999 drv_t *d = c->sys; 1000 1001 if (!d || d->chan->type == T_NONE) 1002 continue; 1003 1004 callout_drain (&d->dcd_timeout_handle); 1005 } 1006 splx (s); 1007 1008 s = splhigh (); 1009 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1010 drv_t *d = (drv_t*) c->sys; 1011 1012 if (!d || d->chan->type == T_NONE) 1013 continue; 1014 1015 /* Deallocate buffers. */ 1016 cx_bus_dma_mem_free (&d->dmamem); 1017 } 1018 bd->board = 0; 1019 adapter [b->num] = 0; 1020 free (b, M_DEVBUF); 1021 splx (s); 1022 1023 mtx_destroy (&bd->cx_mtx); 1024 1025 return 0; 1026} 1027 1028#ifndef NETGRAPH 1029static void cx_ifstart (struct ifnet *ifp) 1030{ 1031 drv_t *d = ifp->if_softc; 1032 bdrv_t *bd = d->board->sys; 1033 1034 CX_LOCK (bd); 1035 cx_start (d); 1036 CX_UNLOCK (bd); 1037} 1038 1039static void cx_ifwatchdog (struct ifnet *ifp) 1040{ 1041 drv_t *d = ifp->if_softc; 1042 1043 cx_watchdog (d); 1044} 1045 1046static void cx_tlf (struct sppp *sp) 1047{ 1048 drv_t *d = SP2IFP(sp)->if_softc; 1049 1050 CX_DEBUG (d, ("cx_tlf\n")); 1051/* cx_set_dtr (d->chan, 0);*/ 1052/* cx_set_rts (d->chan, 0);*/ 1053 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1054 sp->pp_down (sp); 1055} 1056 1057static void cx_tls (struct sppp *sp) 1058{ 1059 drv_t *d = SP2IFP(sp)->if_softc; 1060 1061 CX_DEBUG (d, ("cx_tls\n")); 1062 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1063 sp->pp_up (sp); 1064} 1065 1066/* 1067 * Initialization of interface. 1068 * It seems to be never called by upper level. 1069 */ 1070static void cx_initialize (void *softc) 1071{ 1072 drv_t *d = softc; 1073 1074 CX_DEBUG (d, ("cx_initialize\n")); 1075} 1076 1077/* 1078 * Process an ioctl request. 1079 */ 1080static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data) 1081{ 1082 drv_t *d = ifp->if_softc; 1083 bdrv_t *bd = d->board->sys; 1084 int error, s, was_up, should_be_up; 1085 1086 /* No socket ioctls while the channel is in async mode. */ 1087 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC) 1088 return EBUSY; 1089 1090 /* Socket ioctls on slave subchannels are not allowed. */ 1091 was_up = (ifp->if_flags & IFF_RUNNING) != 0; 1092 error = sppp_ioctl (ifp, cmd, data); 1093 if (error) 1094 return error; 1095 1096 if (! (ifp->if_flags & IFF_DEBUG)) 1097 d->chan->debug = 0; 1098 else if (! d->chan->debug) 1099 d->chan->debug = 1; 1100 1101 switch (cmd) { 1102 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0; 1103 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0; 1104 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0; 1105 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break; 1106 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break; 1107 } 1108 1109 /* We get here only in case of SIFFLAGS or SIFADDR. */ 1110 s = splhigh (); 1111 CX_LOCK (bd); 1112 should_be_up = (ifp->if_flags & IFF_RUNNING) != 0; 1113 if (!was_up && should_be_up) { 1114 /* Interface goes up -- start it. */ 1115 cx_up (d); 1116 cx_start (d); 1117 } else if (was_up && !should_be_up) { 1118 /* Interface is going down -- stop it. */ 1119 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/ 1120 cx_down (d); 1121 } 1122 CX_UNLOCK (bd); 1123 splx (s); 1124 return 0; 1125} 1126#endif /*NETGRAPH*/ 1127 1128/* 1129 * Stop the interface. Called on splimp(). 1130 */ 1131static void cx_down (drv_t *d) 1132{ 1133 int s = splhigh (); 1134 CX_DEBUG (d, ("cx_down\n")); 1135 cx_set_dtr (d->chan, 0); 1136 cx_set_rts (d->chan, 0); 1137 d->running = 0; 1138 splx (s); 1139} 1140 1141/* 1142 * Start the interface. Called on splimp(). 1143 */ 1144static void cx_up (drv_t *d) 1145{ 1146 int s = splhigh (); 1147 CX_DEBUG (d, ("cx_up\n")); 1148 cx_set_dtr (d->chan, 1); 1149 cx_set_rts (d->chan, 1); 1150 d->running = 1; 1151 splx (s); 1152} 1153 1154/* 1155 * Start output on the (slave) interface. Get another datagram to send 1156 * off of the interface queue, and copy it to the interface 1157 * before starting the output. 1158 */ 1159static void cx_send (drv_t *d) 1160{ 1161 struct mbuf *m; 1162 u_short len; 1163 1164 CX_DEBUG2 (d, ("cx_send\n")); 1165 1166 /* No output if the interface is down. */ 1167 if (! d->running) 1168 return; 1169 1170 /* No output if the modem is off. */ 1171 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan)) 1172 return; 1173 1174 if (cx_buf_free (d->chan)) { 1175 /* Get the packet to send. */ 1176#ifdef NETGRAPH 1177 IF_DEQUEUE (&d->hi_queue, m); 1178 if (! m) 1179 IF_DEQUEUE (&d->lo_queue, m); 1180#else 1181 m = sppp_dequeue (d->ifp); 1182#endif 1183 if (! m) 1184 return; 1185#ifndef NETGRAPH 1186 if (d->ifp->if_bpf) 1187 BPF_MTAP (d->ifp, m); 1188#endif 1189 len = m->m_pkthdr.len; 1190 if (! m->m_next) 1191 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t), 1192 len, 0); 1193 else { 1194 u_char buf [DMABUFSZ]; 1195 m_copydata (m, 0, len, buf); 1196 cx_send_packet (d->chan, buf, len, 0); 1197 } 1198 m_freem (m); 1199 1200 /* Set up transmit timeout, 10 seconds. */ 1201#ifdef NETGRAPH 1202 d->timeout = 10; 1203#else 1204 d->ifp->if_timer = 10; 1205#endif 1206 } 1207#ifndef NETGRAPH 1208 d->ifp->if_flags |= IFF_OACTIVE; 1209#endif 1210} 1211 1212/* 1213 * Start output on the interface. 1214 * Always called on splimp(). 1215 */ 1216static void cx_start (drv_t *d) 1217{ 1218 int s = splhigh (); 1219 if (d->running) { 1220 if (! d->chan->dtr) 1221 cx_set_dtr (d->chan, 1); 1222 if (! d->chan->rts) 1223 cx_set_rts (d->chan, 1); 1224 cx_send (d); 1225 } 1226 splx (s); 1227} 1228 1229/* 1230 * Handle transmit timeouts. 1231 * Recover after lost transmit interrupts. 1232 * Always called on splimp(). 1233 */ 1234static void cx_watchdog (drv_t *d) 1235{ 1236 bdrv_t *bd = d->board->sys; 1237 1238 int s = splhigh (); 1239 CX_LOCK (bd); 1240 CX_DEBUG (d, ("device timeout\n")); 1241 if (d->running) { 1242 cx_setup_chan (d->chan); 1243 cx_start_chan (d->chan, 0, 0); 1244 cx_set_dtr (d->chan, 1); 1245 cx_set_rts (d->chan, 1); 1246 cx_start (d); 1247 } 1248 CX_UNLOCK (bd); 1249 splx (s); 1250} 1251 1252/* 1253 * Transmit callback function. 1254 */ 1255static void cx_transmit (cx_chan_t *c, void *attachment, int len) 1256{ 1257 drv_t *d = c->sys; 1258 1259 if (!d) 1260 return; 1261 1262 if (c->mode == M_ASYNC && d->tty) { 1263 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH); 1264 d->atimeout = 0; 1265 if (d->tty->t_dev) { 1266 d->intr_action |= CX_WRITE; 1267 MY_SOFT_INTR = 1; 1268 swi_sched (cx_fast_ih, 0); 1269 } 1270 return; 1271 } 1272#ifdef NETGRAPH 1273 d->timeout = 0; 1274#else 1275 ++d->ifp->if_opackets; 1276 d->ifp->if_flags &= ~IFF_OACTIVE; 1277 d->ifp->if_timer = 0; 1278#endif 1279 cx_start (d); 1280} 1281 1282/* 1283 * Process the received packet. 1284 */ 1285static void cx_receive (cx_chan_t *c, char *data, int len) 1286{ 1287 drv_t *d = c->sys; 1288 struct mbuf *m; 1289 char *cc = data; 1290#ifdef NETGRAPH 1291 int error; 1292#endif 1293 1294 if (!d) 1295 return; 1296 1297 if (c->mode == M_ASYNC && d->tty) { 1298 if (d->tty->t_state & TS_ISOPEN) { 1299 async_q *q = &d->aqueue; 1300 int size = BF_SZ - 1 - AQ_GSZ (q); 1301 1302 if (len <= 0 && !size) 1303 return; 1304 1305 if (len > size) { 1306 c->ierrs++; 1307 cx_error (c, CX_OVERRUN); 1308 len = size - 1; 1309 } 1310 1311 while (len--) { 1312 AQ_PUSH (q, *(unsigned char *)cc); 1313 cc++; 1314 } 1315 1316 d->intr_action |= CX_READ; 1317 MY_SOFT_INTR = 1; 1318 swi_sched (cx_fast_ih, 0); 1319 } 1320 return; 1321 } 1322 if (! d->running) 1323 return; 1324 1325 m = makembuf (data, len); 1326 if (! m) { 1327 CX_DEBUG (d, ("no memory for packet\n")); 1328#ifndef NETGRAPH 1329 ++d->ifp->if_iqdrops; 1330#endif 1331 return; 1332 } 1333 if (c->debug > 1) 1334 printmbuf (m); 1335#ifdef NETGRAPH 1336 m->m_pkthdr.rcvif = 0; 1337 NG_SEND_DATA_ONLY (error, d->hook, m); 1338#else 1339 ++d->ifp->if_ipackets; 1340 m->m_pkthdr.rcvif = d->ifp; 1341 /* Check if there's a BPF listener on this interface. 1342 * If so, hand off the raw packet to bpf. */ 1343 if (d->ifp->if_bpf) 1344 BPF_TAP (d->ifp, data, len); 1345 IF_ENQUEUE (&d->queue, m); 1346#endif 1347} 1348 1349#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\ 1350 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\ 1351 && (!(tp->t_iflag & PARMRK)\ 1352 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\ 1353 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\ 1354 && linesw[tp->t_line]->l_rint == ttyinput) 1355 1356/* 1357 * Error callback function. 1358 */ 1359static void cx_error (cx_chan_t *c, int data) 1360{ 1361 drv_t *d = c->sys; 1362 async_q *q; 1363 1364 if (!d) 1365 return; 1366 1367 q = &(d->aqueue); 1368 1369 switch (data) { 1370 case CX_FRAME: 1371 CX_DEBUG (d, ("frame error\n")); 1372 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1373 && (AQ_GSZ (q) < BF_SZ - 1) 1374 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1375 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1376 AQ_PUSH (q, TTY_FE); 1377 d->intr_action |= CX_READ; 1378 MY_SOFT_INTR = 1; 1379 swi_sched (cx_fast_ih, 0); 1380 } 1381#ifndef NETGRAPH 1382 else 1383 ++d->ifp->if_ierrors; 1384#endif 1385 break; 1386 case CX_CRC: 1387 CX_DEBUG (d, ("crc error\n")); 1388 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1389 && (AQ_GSZ (q) < BF_SZ - 1) 1390 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1391 || !(d->tty->t_iflag & INPCK) 1392 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1393 AQ_PUSH (q, TTY_PE); 1394 d->intr_action |= CX_READ; 1395 MY_SOFT_INTR = 1; 1396 swi_sched (cx_fast_ih, 0); 1397 } 1398#ifndef NETGRAPH 1399 else 1400 ++d->ifp->if_ierrors; 1401#endif 1402 break; 1403 case CX_OVERRUN: 1404 CX_DEBUG (d, ("overrun error\n")); 1405#ifdef TTY_OE 1406 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1407 && (AQ_GSZ (q) < BF_SZ - 1) 1408 && (!CONDITION((&d->tty->t_termios), (d->tty)))) { 1409 AQ_PUSH (q, TTY_OE); 1410 d->intr_action |= CX_READ; 1411 MY_SOFT_INTR = 1; 1412 swi_sched (cx_fast_ih, 0); 1413 } 1414#endif 1415#ifndef NETGRAPH 1416 else { 1417 ++d->ifp->if_collisions; 1418 ++d->ifp->if_ierrors; 1419 } 1420#endif 1421 break; 1422 case CX_OVERFLOW: 1423 CX_DEBUG (d, ("overflow error\n")); 1424#ifndef NETGRAPH 1425 if (c->mode != M_ASYNC) 1426 ++d->ifp->if_ierrors; 1427#endif 1428 break; 1429 case CX_UNDERRUN: 1430 CX_DEBUG (d, ("underrun error\n")); 1431 if (c->mode != M_ASYNC) { 1432#ifdef NETGRAPH 1433 d->timeout = 0; 1434#else 1435 ++d->ifp->if_oerrors; 1436 d->ifp->if_flags &= ~IFF_OACTIVE; 1437 d->ifp->if_timer = 0; 1438 cx_start (d); 1439#endif 1440 } 1441 break; 1442 case CX_BREAK: 1443 CX_DEBUG (d, ("break error\n")); 1444 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1445 && (AQ_GSZ (q) < BF_SZ - 1) 1446 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1447 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) { 1448 AQ_PUSH (q, TTY_BI); 1449 d->intr_action |= CX_READ; 1450 MY_SOFT_INTR = 1; 1451 swi_sched (cx_fast_ih, 0); 1452 } 1453#ifndef NETGRAPH 1454 else 1455 ++d->ifp->if_ierrors; 1456#endif 1457 break; 1458 default: 1459 CX_DEBUG (d, ("error #%d\n", data)); 1460 } 1461} 1462 1463static int cx_topen (struct tty *tp, struct cdev *dev) 1464{ 1465 bdrv_t *bd; 1466 drv_t *d; 1467 1468 d = tp->t_sc; 1469 CX_DEBUG2 (d, ("cx_open (serial)\n")); 1470 1471 bd = d->board->sys; 1472 1473 if (d->chan->mode != M_ASYNC) 1474 return (EBUSY); 1475 1476 d->open_dev |= 0x2; 1477 CX_LOCK (bd); 1478 cx_start_chan (d->chan, 0, 0); 1479 cx_set_dtr (d->chan, 1); 1480 cx_set_rts (d->chan, 1); 1481 d->cd = cx_get_cd (d->chan); 1482 CX_UNLOCK (bd); 1483 1484 CX_DEBUG2 (d, ("cx_open done\n")); 1485 1486 return 0; 1487} 1488 1489static void cx_tclose (struct tty *tp) 1490{ 1491 drv_t *d; 1492 bdrv_t *bd; 1493 1494 d = tp->t_sc; 1495 CX_DEBUG2 (d, ("cx_close\n")); 1496 bd = d->board->sys; 1497 CX_LOCK (bd); 1498 /* Disable receiver. 1499 * Transmitter continues sending the queued data. */ 1500 cx_enable_receive (d->chan, 0); 1501 CX_UNLOCK (bd); 1502 d->open_dev &= ~0x2; 1503} 1504 1505static int cx_tmodem (struct tty *tp, int sigon, int sigoff) 1506{ 1507 drv_t *d; 1508 bdrv_t *bd; 1509 1510 d = tp->t_sc; 1511 bd = d->board->sys; 1512 1513 CX_LOCK (bd); 1514 if (!sigon && !sigoff) { 1515 if (cx_get_dsr (d->chan)) sigon |= SER_DSR; 1516 if (cx_get_cd (d->chan)) sigon |= SER_DCD; 1517 if (cx_get_cts (d->chan)) sigon |= SER_CTS; 1518 if (d->chan->dtr) sigon |= SER_DTR; 1519 if (d->chan->rts) sigon |= SER_RTS; 1520 CX_UNLOCK (bd); 1521 return sigon; 1522 } 1523 1524 if (sigon & SER_DTR) 1525 cx_set_dtr (d->chan, 1); 1526 if (sigoff & SER_DTR) 1527 cx_set_dtr (d->chan, 0); 1528 if (sigon & SER_RTS) 1529 cx_set_rts (d->chan, 1); 1530 if (sigoff & SER_RTS) 1531 cx_set_rts (d->chan, 0); 1532 CX_UNLOCK (bd); 1533 1534 return (0); 1535} 1536 1537static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td) 1538{ 1539 int unit; 1540 drv_t *d; 1541 1542 d = dev->si_drv1; 1543 unit = d->chan->num; 1544 1545 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n", 1546 unit, flag, mode)); 1547 1548 d->open_dev |= 0x1; 1549 1550 CX_DEBUG2 (d, ("cx_open done\n")); 1551 1552 return 0; 1553} 1554 1555static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td) 1556{ 1557 drv_t *d; 1558 1559 d = dev->si_drv1; 1560 CX_DEBUG2 (d, ("cx_close\n")); 1561 d->open_dev &= ~0x1; 1562 return 0; 1563} 1564 1565static int cx_modem_status (drv_t *d) 1566{ 1567 bdrv_t *bd = d->board->sys; 1568 int status = 0, s = splhigh (); 1569 CX_LOCK (bd); 1570 /* Already opened by someone or network interface is up? */ 1571 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1572 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running)) 1573 status = TIOCM_LE; /* always enabled while open */ 1574 1575 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR; 1576 if (cx_get_cd (d->chan)) status |= TIOCM_CD; 1577 if (cx_get_cts (d->chan)) status |= TIOCM_CTS; 1578 if (d->chan->dtr) status |= TIOCM_DTR; 1579 if (d->chan->rts) status |= TIOCM_RTS; 1580 CX_UNLOCK (bd); 1581 splx (s); 1582 return status; 1583} 1584 1585static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1586{ 1587 drv_t *d; 1588 bdrv_t *bd; 1589 cx_chan_t *c; 1590 struct serial_statistics *st; 1591 int error, s; 1592 char mask[16]; 1593 1594 d = dev->si_drv1; 1595 c = d->chan; 1596 1597 bd = d->board->sys; 1598 1599 switch (cmd) { 1600 case SERIAL_GETREGISTERED: 1601 CX_DEBUG2 (d, ("ioctl: getregistered\n")); 1602 bzero (mask, sizeof(mask)); 1603 for (s=0; s<NCX*NCHAN; ++s) 1604 if (channel [s]) 1605 mask [s/8] |= 1 << (s & 7); 1606 bcopy (mask, data, sizeof (mask)); 1607 return 0; 1608 1609 case SERIAL_GETPORT: 1610 CX_DEBUG2 (d, ("ioctl: getport\n")); 1611 s = splhigh (); 1612 CX_LOCK (bd); 1613 *(int *)data = cx_get_port (c); 1614 CX_UNLOCK (bd); 1615 splx (s); 1616 if (*(int *)data<0) 1617 return (EINVAL); 1618 else 1619 return 0; 1620 1621 case SERIAL_SETPORT: 1622 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1623 /* Only for superuser! */ 1624 error = suser (td); 1625 if (error) 1626 return error; 1627 1628 s = splhigh (); 1629 CX_LOCK (bd); 1630 cx_set_port (c, *(int *)data); 1631 CX_UNLOCK (bd); 1632 splx (s); 1633 return 0; 1634 1635#ifndef NETGRAPH 1636 case SERIAL_GETPROTO: 1637 CX_DEBUG2 (d, ("ioctl: getproto\n")); 1638 s = splhigh (); 1639 CX_LOCK (bd); 1640 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" : 1641 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" : 1642 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp"); 1643 CX_UNLOCK (bd); 1644 splx (s); 1645 return 0; 1646 1647 case SERIAL_SETPROTO: 1648 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1649 /* Only for superuser! */ 1650 error = suser (td); 1651 if (error) 1652 return error; 1653 if (c->mode == M_ASYNC) 1654 return EBUSY; 1655 if (d->ifp->if_flags & IFF_RUNNING) 1656 return EBUSY; 1657 if (! strcmp ("cisco", (char*)data)) { 1658 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR); 1659 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1660 d->ifp->if_flags |= PP_CISCO; 1661 } else if (! strcmp ("fr", (char*)data)) { 1662 d->ifp->if_flags &= ~(PP_CISCO); 1663 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE; 1664 } else if (! strcmp ("ppp", (char*)data)) { 1665 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE); 1666 d->ifp->if_flags &= ~(PP_CISCO); 1667 } else 1668 return EINVAL; 1669 return 0; 1670 1671 case SERIAL_GETKEEPALIVE: 1672 CX_DEBUG2 (d, ("ioctl: getkeepalive\n")); 1673 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1674 (d->ifp->if_flags & PP_CISCO) || 1675 (c->mode == M_ASYNC)) 1676 return EINVAL; 1677 s = splhigh (); 1678 CX_LOCK (bd); 1679 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0; 1680 CX_UNLOCK (bd); 1681 splx (s); 1682 return 0; 1683 1684 case SERIAL_SETKEEPALIVE: 1685 CX_DEBUG2 (d, ("ioctl: setkeepalive\n")); 1686 /* Only for superuser! */ 1687 error = suser (td); 1688 if (error) 1689 return error; 1690 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1691 (d->ifp->if_flags & PP_CISCO)) 1692 return EINVAL; 1693 s = splhigh (); 1694 CX_LOCK (bd); 1695 if (*(int*)data) 1696 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1697 else 1698 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE; 1699 CX_UNLOCK (bd); 1700 splx (s); 1701 return 0; 1702#endif /*NETGRAPH*/ 1703 1704 case SERIAL_GETMODE: 1705 CX_DEBUG2 (d, ("ioctl: getmode\n")); 1706 s = splhigh (); 1707 CX_LOCK (bd); 1708 *(int*)data = (c->mode == M_ASYNC) ? 1709 SERIAL_ASYNC : SERIAL_HDLC; 1710 CX_UNLOCK (bd); 1711 splx (s); 1712 return 0; 1713 1714 case SERIAL_SETMODE: 1715 CX_DEBUG2 (d, ("ioctl: setmode\n")); 1716 /* Only for superuser! */ 1717 error = suser (td); 1718 if (error) 1719 return error; 1720 1721 /* Somebody is waiting for carrier? */ 1722 if (d->lock) 1723 return EBUSY; 1724 /* /dev/ttyXX is already opened by someone? */ 1725 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1726 (d->open_dev|0x2)) 1727 return EBUSY; 1728 /* Network interface is up? 1729 * Cannot change to async mode. */ 1730 if (c->mode != M_ASYNC && d->running && 1731 (*(int*)data == SERIAL_ASYNC)) 1732 return EBUSY; 1733 1734 s = splhigh (); 1735 CX_LOCK (bd); 1736 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) { 1737 cx_set_mode (c, M_ASYNC); 1738 cx_enable_receive (c, 0); 1739 cx_enable_transmit (c, 0); 1740 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) { 1741 cx_set_mode (c, M_HDLC); 1742 cx_enable_receive (c, 1); 1743 cx_enable_transmit (c, 1); 1744 } 1745 CX_UNLOCK (bd); 1746 splx (s); 1747 return 0; 1748 1749 case SERIAL_GETSTAT: 1750 CX_DEBUG2 (d, ("ioctl: getestat\n")); 1751 st = (struct serial_statistics*) data; 1752 s = splhigh (); 1753 CX_LOCK (bd); 1754 st->rintr = c->rintr; 1755 st->tintr = c->tintr; 1756 st->mintr = c->mintr; 1757 st->ibytes = c->ibytes; 1758 st->ipkts = c->ipkts; 1759 st->ierrs = c->ierrs; 1760 st->obytes = c->obytes; 1761 st->opkts = c->opkts; 1762 st->oerrs = c->oerrs; 1763 CX_UNLOCK (bd); 1764 splx (s); 1765 return 0; 1766 1767 case SERIAL_CLRSTAT: 1768 CX_DEBUG2 (d, ("ioctl: clrstat\n")); 1769 /* Only for superuser! */ 1770 error = suser (td); 1771 if (error) 1772 return error; 1773 s = splhigh (); 1774 CX_LOCK (bd); 1775 c->rintr = 0; 1776 c->tintr = 0; 1777 c->mintr = 0; 1778 c->ibytes = 0; 1779 c->ipkts = 0; 1780 c->ierrs = 0; 1781 c->obytes = 0; 1782 c->opkts = 0; 1783 c->oerrs = 0; 1784 CX_UNLOCK (bd); 1785 splx (s); 1786 return 0; 1787 1788 case SERIAL_GETBAUD: 1789 CX_DEBUG2 (d, ("ioctl: getbaud\n")); 1790 if (c->mode == M_ASYNC) 1791 return EINVAL; 1792 s = splhigh (); 1793 CX_LOCK (bd); 1794 *(long*)data = cx_get_baud(c); 1795 CX_UNLOCK (bd); 1796 splx (s); 1797 return 0; 1798 1799 case SERIAL_SETBAUD: 1800 CX_DEBUG2 (d, ("ioctl: setbaud\n")); 1801 /* Only for superuser! */ 1802 error = suser (td); 1803 if (error) 1804 return error; 1805 if (c->mode == M_ASYNC) 1806 return EINVAL; 1807 s = splhigh (); 1808 CX_LOCK (bd); 1809 cx_set_baud (c, *(long*)data); 1810 CX_UNLOCK (bd); 1811 splx (s); 1812 return 0; 1813 1814 case SERIAL_GETLOOP: 1815 CX_DEBUG2 (d, ("ioctl: getloop\n")); 1816 if (c->mode == M_ASYNC) 1817 return EINVAL; 1818 s = splhigh (); 1819 CX_LOCK (bd); 1820 *(int*)data = cx_get_loop (c); 1821 CX_UNLOCK (bd); 1822 splx (s); 1823 return 0; 1824 1825 case SERIAL_SETLOOP: 1826 CX_DEBUG2 (d, ("ioctl: setloop\n")); 1827 /* Only for superuser! */ 1828 error = suser (td); 1829 if (error) 1830 return error; 1831 if (c->mode == M_ASYNC) 1832 return EINVAL; 1833 s = splhigh (); 1834 CX_LOCK (bd); 1835 cx_set_loop (c, *(int*)data); 1836 CX_UNLOCK (bd); 1837 splx (s); 1838 return 0; 1839 1840 case SERIAL_GETDPLL: 1841 CX_DEBUG2 (d, ("ioctl: getdpll\n")); 1842 if (c->mode == M_ASYNC) 1843 return EINVAL; 1844 s = splhigh (); 1845 CX_LOCK (bd); 1846 *(int*)data = cx_get_dpll (c); 1847 CX_UNLOCK (bd); 1848 splx (s); 1849 return 0; 1850 1851 case SERIAL_SETDPLL: 1852 CX_DEBUG2 (d, ("ioctl: setdpll\n")); 1853 /* Only for superuser! */ 1854 error = suser (td); 1855 if (error) 1856 return error; 1857 if (c->mode == M_ASYNC) 1858 return EINVAL; 1859 s = splhigh (); 1860 CX_LOCK (bd); 1861 cx_set_dpll (c, *(int*)data); 1862 CX_UNLOCK (bd); 1863 splx (s); 1864 return 0; 1865 1866 case SERIAL_GETNRZI: 1867 CX_DEBUG2 (d, ("ioctl: getnrzi\n")); 1868 if (c->mode == M_ASYNC) 1869 return EINVAL; 1870 s = splhigh (); 1871 CX_LOCK (bd); 1872 *(int*)data = cx_get_nrzi (c); 1873 CX_UNLOCK (bd); 1874 splx (s); 1875 return 0; 1876 1877 case SERIAL_SETNRZI: 1878 CX_DEBUG2 (d, ("ioctl: setnrzi\n")); 1879 /* Only for superuser! */ 1880 error = suser (td); 1881 if (error) 1882 return error; 1883 if (c->mode == M_ASYNC) 1884 return EINVAL; 1885 s = splhigh (); 1886 CX_LOCK (bd); 1887 cx_set_nrzi (c, *(int*)data); 1888 CX_UNLOCK (bd); 1889 splx (s); 1890 return 0; 1891 1892 case SERIAL_GETDEBUG: 1893 CX_DEBUG2 (d, ("ioctl: getdebug\n")); 1894 s = splhigh (); 1895 CX_LOCK (bd); 1896 *(int*)data = c->debug; 1897 CX_UNLOCK (bd); 1898 splx (s); 1899 return 0; 1900 1901 case SERIAL_SETDEBUG: 1902 CX_DEBUG2 (d, ("ioctl: setdebug\n")); 1903 /* Only for superuser! */ 1904 error = suser (td); 1905 if (error) 1906 return error; 1907 s = splhigh (); 1908 CX_LOCK (bd); 1909 c->debug = *(int*)data; 1910 CX_UNLOCK (bd); 1911 splx (s); 1912#ifndef NETGRAPH 1913 if (d->chan->debug) 1914 d->ifp->if_flags |= IFF_DEBUG; 1915 else 1916 d->ifp->if_flags &= (~IFF_DEBUG); 1917#endif 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 2266static struct cdevsw cx_cdevsw = { 2267 .d_version = D_VERSION, 2268 .d_open = cx_open, 2269 .d_close = cx_close, 2270 .d_ioctl = cx_ioctl, 2271 .d_name = "cx", 2272 .d_flags = D_TTY | D_NEEDGIANT, 2273}; 2274 2275#ifdef NETGRAPH 2276static int ng_cx_constructor (node_p node) 2277{ 2278 drv_t *d = NG_NODE_PRIVATE (node); 2279 CX_DEBUG (d, ("Constructor\n")); 2280 return EINVAL; 2281} 2282 2283static int ng_cx_newhook (node_p node, hook_p hook, const char *name) 2284{ 2285 int s; 2286 drv_t *d = NG_NODE_PRIVATE (node); 2287 bdrv_t *bd = d->board->sys; 2288 2289 if (d->chan->mode == M_ASYNC) 2290 return EINVAL; 2291 2292 /* Attach debug hook */ 2293 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) { 2294 NG_HOOK_SET_PRIVATE (hook, NULL); 2295 d->debug_hook = hook; 2296 return 0; 2297 } 2298 2299 /* Check for raw hook */ 2300 if (strcmp (name, NG_CX_HOOK_RAW) != 0) 2301 return EINVAL; 2302 2303 NG_HOOK_SET_PRIVATE (hook, d); 2304 d->hook = hook; 2305 s = splhigh (); 2306 CX_LOCK (bd); 2307 cx_up (d); 2308 CX_UNLOCK (bd); 2309 splx (s); 2310 return 0; 2311} 2312 2313static int print_modems (char *s, cx_chan_t *c, int need_header) 2314{ 2315 int status = cx_modem_status (c->sys); 2316 int length = 0; 2317 2318 if (need_header) 2319 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n"); 2320 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n", 2321 status & TIOCM_LE ? "On" : "-", 2322 status & TIOCM_DTR ? "On" : "-", 2323 status & TIOCM_DSR ? "On" : "-", 2324 status & TIOCM_RTS ? "On" : "-", 2325 status & TIOCM_CTS ? "On" : "-", 2326 status & TIOCM_CD ? "On" : "-"); 2327 return length; 2328} 2329 2330static int print_stats (char *s, cx_chan_t *c, int need_header) 2331{ 2332 int length = 0; 2333 2334 if (need_header) 2335 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n"); 2336 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n", 2337 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts, 2338 c->ierrs, c->obytes, c->opkts, c->oerrs); 2339 return length; 2340} 2341 2342static int print_chan (char *s, cx_chan_t *c) 2343{ 2344 drv_t *d = c->sys; 2345 int length = 0; 2346 2347 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num); 2348 if (d->chan->debug) 2349 length += sprintf (s + length, " debug=%d", d->chan->debug); 2350 2351 if (cx_get_baud (c)) 2352 length += sprintf (s + length, " %ld", cx_get_baud (c)); 2353 else 2354 length += sprintf (s + length, " extclock"); 2355 2356 if (c->mode == M_HDLC) { 2357 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off"); 2358 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off"); 2359 } 2360 2361 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n"); 2362 return length; 2363} 2364 2365static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook) 2366{ 2367 drv_t *d = NG_NODE_PRIVATE (node); 2368 struct ng_mesg *msg; 2369 struct ng_mesg *resp = NULL; 2370 int error = 0; 2371 2372 if (!d) 2373 return EINVAL; 2374 2375 CX_DEBUG (d, ("Rcvmsg\n")); 2376 NGI_GET_MSG (item, msg); 2377 switch (msg->header.typecookie) { 2378 default: 2379 error = EINVAL; 2380 break; 2381 2382 case NGM_CX_COOKIE: 2383 printf ("Don't forget to implement\n"); 2384 error = EINVAL; 2385 break; 2386 2387 case NGM_GENERIC_COOKIE: 2388 switch (msg->header.cmd) { 2389 default: 2390 error = EINVAL; 2391 break; 2392 2393 case NGM_TEXT_STATUS: { 2394 char *s; 2395 int l = 0; 2396 int dl = sizeof (struct ng_mesg) + 730; 2397 2398 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT); 2399 if (! resp) { 2400 error = ENOMEM; 2401 break; 2402 } 2403 bzero (resp, dl); 2404 s = (resp)->data; 2405 l += print_chan (s + l, d->chan); 2406 l += print_stats (s + l, d->chan, 1); 2407 l += print_modems (s + l, d->chan, 1); 2408 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRLEN); 2409 } 2410 break; 2411 } 2412 break; 2413 } 2414 NG_RESPOND_MSG (error, node, item, resp); 2415 NG_FREE_MSG (msg); 2416 return error; 2417} 2418 2419static int ng_cx_rcvdata (hook_p hook, item_p item) 2420{ 2421 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook)); 2422 struct mbuf *m; 2423 struct ng_tag_prio *ptag; 2424 bdrv_t *bd; 2425 struct ifqueue *q; 2426 int s; 2427 2428 NGI_GET_M (item, m); 2429 NG_FREE_ITEM (item); 2430 if (! NG_HOOK_PRIVATE (hook) || ! d) { 2431 NG_FREE_M (m); 2432 return ENETDOWN; 2433 } 2434 2435 bd = d->board->sys; 2436 /* Check for high priority data */ 2437 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE, 2438 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) ) 2439 q = &d->hi_queue; 2440 else 2441 q = &d->lo_queue; 2442 2443 s = splhigh (); 2444 CX_LOCK (bd); 2445 IF_LOCK (q); 2446 if (_IF_QFULL (q)) { 2447 _IF_DROP (q); 2448 IF_UNLOCK (q); 2449 CX_UNLOCK (bd); 2450 splx (s); 2451 NG_FREE_M (m); 2452 return ENOBUFS; 2453 } 2454 _IF_ENQUEUE (q, m); 2455 IF_UNLOCK (q); 2456 cx_start (d); 2457 CX_UNLOCK (bd); 2458 splx (s); 2459 return 0; 2460} 2461 2462static int ng_cx_rmnode (node_p node) 2463{ 2464 drv_t *d = NG_NODE_PRIVATE (node); 2465 bdrv_t *bd; 2466 2467 CX_DEBUG (d, ("Rmnode\n")); 2468 if (d && d->running) { 2469 int s = splhigh (); 2470 bd = d->board->sys; 2471 CX_LOCK (bd); 2472 cx_down (d); 2473 CX_UNLOCK (bd); 2474 splx (s); 2475 } 2476#ifdef KLD_MODULE 2477 if (node->nd_flags & NGF_REALLY_DIE) { 2478 NG_NODE_SET_PRIVATE (node, NULL); 2479 NG_NODE_UNREF (node); 2480 } 2481 NG_NODE_REVIVE(node); /* Persistant node */ 2482#endif 2483 return 0; 2484} 2485 2486static void ng_cx_watchdog (void *arg) 2487{ 2488 drv_t *d = arg; 2489 2490 if (d->timeout == 1) 2491 cx_watchdog (d); 2492 if (d->timeout) 2493 d->timeout--; 2494 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2495} 2496 2497static int ng_cx_connect (hook_p hook) 2498{ 2499 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2500 2501 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2502 return 0; 2503} 2504 2505static int ng_cx_disconnect (hook_p hook) 2506{ 2507 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2508 bdrv_t *bd = d->board->sys; 2509 int s; 2510 2511 s = splhigh (); 2512 CX_LOCK (bd); 2513 if (NG_HOOK_PRIVATE (hook)) 2514 cx_down (d); 2515 CX_UNLOCK (bd); 2516 splx (s); 2517 /* If we were wait it than it reasserted now, just stop it. */ 2518 if (!callout_drain (&d->timeout_handle)) 2519 callout_stop (&d->timeout_handle); 2520 return 0; 2521} 2522#endif /*NETGRAPH*/ 2523 2524static int cx_modevent (module_t mod, int type, void *unused) 2525{ 2526 static int load_count = 0; 2527 2528 if (!debug_mpsafenet && cx_mpsafenet) { 2529 printf ("WORNING! Network stack is not MPSAFE. " 2530 "Turning off debug.cx.mpsafenet.\n"); 2531 cx_mpsafenet = 0; 2532 } 2533 if (cx_mpsafenet) 2534 cx_cdevsw.d_flags &= ~D_NEEDGIANT; 2535 2536 switch (type) { 2537 case MOD_LOAD: 2538#ifdef NETGRAPH 2539 if (ng_newtype (&typestruct)) 2540 printf ("Failed to register ng_cx\n"); 2541#endif 2542 ++load_count; 2543 2544 callout_init (&timeout_handle, cx_mpsafenet?CALLOUT_MPSAFE:0); 2545 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 2546 /* Software interrupt. */ 2547 swi_add(&tty_ithd, "cx", cx_softintr, NULL, SWI_TTY, 2548 (cx_mpsafenet?INTR_MPSAFE:0), &cx_fast_ih); 2549 break; 2550 case MOD_UNLOAD: 2551 if (load_count == 1) { 2552 printf ("Removing device entry for Sigma\n"); 2553#ifdef NETGRAPH 2554 ng_rmtype (&typestruct); 2555#endif 2556 } 2557 /* If we were wait it than it reasserted now, just stop it. */ 2558 if (!callout_drain (&timeout_handle)) 2559 callout_stop (&timeout_handle); 2560 ithread_remove_handler (cx_fast_ih); 2561 --load_count; 2562 break; 2563 case MOD_SHUTDOWN: 2564 break; 2565 } 2566 return 0; 2567} 2568 2569#ifdef NETGRAPH 2570static struct ng_type typestruct = { 2571 .version = NG_ABI_VERSION, 2572 .name = NG_CX_NODE_TYPE, 2573 .constructor = ng_cx_constructor, 2574 .rcvmsg = ng_cx_rcvmsg, 2575 .shutdown = ng_cx_rmnode, 2576 .newhook = ng_cx_newhook, 2577 .connect = ng_cx_connect, 2578 .rcvdata = ng_cx_rcvdata, 2579 .disconnect = ng_cx_disconnect, 2580}; 2581#endif /*NETGRAPH*/ 2582 2583#ifdef NETGRAPH 2584MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 2585#else 2586MODULE_DEPEND (isa_cx, sppp, 1, 1, 1); 2587#endif 2588DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL); 2589MODULE_VERSION (cx, 1); 2590