if_cx.c revision 147858
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 147858 2005-07-09 14:03:02Z 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 return sigon; 1521 } 1522 1523 if (sigon & SER_DTR) 1524 cx_set_dtr (d->chan, 1); 1525 if (sigoff & SER_DTR) 1526 cx_set_dtr (d->chan, 0); 1527 if (sigon & SER_RTS) 1528 cx_set_rts (d->chan, 1); 1529 if (sigoff & SER_RTS) 1530 cx_set_rts (d->chan, 0); 1531 CX_UNLOCK (bd); 1532 1533 return (0); 1534} 1535 1536static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td) 1537{ 1538 int unit; 1539 drv_t *d; 1540 1541 d = dev->si_drv1; 1542 unit = d->chan->num; 1543 1544 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n", 1545 unit, flag, mode)); 1546 1547 d->open_dev |= 0x1; 1548 1549 CX_DEBUG2 (d, ("cx_open done\n")); 1550 1551 return 0; 1552} 1553 1554static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td) 1555{ 1556 drv_t *d; 1557 1558 d = dev->si_drv1; 1559 CX_DEBUG2 (d, ("cx_close\n")); 1560 d->open_dev &= ~0x1; 1561 return 0; 1562} 1563 1564static int cx_modem_status (drv_t *d) 1565{ 1566 bdrv_t *bd = d->board->sys; 1567 int status = 0, s = splhigh (); 1568 CX_LOCK (bd); 1569 /* Already opened by someone or network interface is up? */ 1570 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1571 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running)) 1572 status = TIOCM_LE; /* always enabled while open */ 1573 1574 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR; 1575 if (cx_get_cd (d->chan)) status |= TIOCM_CD; 1576 if (cx_get_cts (d->chan)) status |= TIOCM_CTS; 1577 if (d->chan->dtr) status |= TIOCM_DTR; 1578 if (d->chan->rts) status |= TIOCM_RTS; 1579 CX_UNLOCK (bd); 1580 splx (s); 1581 return status; 1582} 1583 1584static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1585{ 1586 drv_t *d; 1587 bdrv_t *bd; 1588 cx_chan_t *c; 1589 struct serial_statistics *st; 1590 int error, s; 1591 char mask[16]; 1592 1593 d = dev->si_drv1; 1594 c = d->chan; 1595 1596 bd = d->board->sys; 1597 1598 switch (cmd) { 1599 case SERIAL_GETREGISTERED: 1600 CX_DEBUG2 (d, ("ioctl: getregistered\n")); 1601 bzero (mask, sizeof(mask)); 1602 for (s=0; s<NCX*NCHAN; ++s) 1603 if (channel [s]) 1604 mask [s/8] |= 1 << (s & 7); 1605 bcopy (mask, data, sizeof (mask)); 1606 return 0; 1607 1608 case SERIAL_GETPORT: 1609 CX_DEBUG2 (d, ("ioctl: getport\n")); 1610 s = splhigh (); 1611 CX_LOCK (bd); 1612 *(int *)data = cx_get_port (c); 1613 CX_UNLOCK (bd); 1614 splx (s); 1615 if (*(int *)data<0) 1616 return (EINVAL); 1617 else 1618 return 0; 1619 1620 case SERIAL_SETPORT: 1621 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1622 /* Only for superuser! */ 1623 error = suser (td); 1624 if (error) 1625 return error; 1626 1627 s = splhigh (); 1628 CX_LOCK (bd); 1629 cx_set_port (c, *(int *)data); 1630 CX_UNLOCK (bd); 1631 splx (s); 1632 return 0; 1633 1634#ifndef NETGRAPH 1635 case SERIAL_GETPROTO: 1636 CX_DEBUG2 (d, ("ioctl: getproto\n")); 1637 s = splhigh (); 1638 CX_LOCK (bd); 1639 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" : 1640 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" : 1641 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp"); 1642 CX_UNLOCK (bd); 1643 splx (s); 1644 return 0; 1645 1646 case SERIAL_SETPROTO: 1647 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1648 /* Only for superuser! */ 1649 error = suser (td); 1650 if (error) 1651 return error; 1652 if (c->mode == M_ASYNC) 1653 return EBUSY; 1654 if (d->ifp->if_flags & IFF_RUNNING) 1655 return EBUSY; 1656 if (! strcmp ("cisco", (char*)data)) { 1657 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR); 1658 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1659 d->ifp->if_flags |= PP_CISCO; 1660 } else if (! strcmp ("fr", (char*)data)) { 1661 d->ifp->if_flags &= ~(PP_CISCO); 1662 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE; 1663 } else if (! strcmp ("ppp", (char*)data)) { 1664 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE); 1665 d->ifp->if_flags &= ~(PP_CISCO); 1666 } else 1667 return EINVAL; 1668 return 0; 1669 1670 case SERIAL_GETKEEPALIVE: 1671 CX_DEBUG2 (d, ("ioctl: getkeepalive\n")); 1672 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1673 (d->ifp->if_flags & PP_CISCO) || 1674 (c->mode == M_ASYNC)) 1675 return EINVAL; 1676 s = splhigh (); 1677 CX_LOCK (bd); 1678 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0; 1679 CX_UNLOCK (bd); 1680 splx (s); 1681 return 0; 1682 1683 case SERIAL_SETKEEPALIVE: 1684 CX_DEBUG2 (d, ("ioctl: setkeepalive\n")); 1685 /* Only for superuser! */ 1686 error = suser (td); 1687 if (error) 1688 return error; 1689 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1690 (d->ifp->if_flags & PP_CISCO)) 1691 return EINVAL; 1692 s = splhigh (); 1693 CX_LOCK (bd); 1694 if (*(int*)data) 1695 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1696 else 1697 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE; 1698 CX_UNLOCK (bd); 1699 splx (s); 1700 return 0; 1701#endif /*NETGRAPH*/ 1702 1703 case SERIAL_GETMODE: 1704 CX_DEBUG2 (d, ("ioctl: getmode\n")); 1705 s = splhigh (); 1706 CX_LOCK (bd); 1707 *(int*)data = (c->mode == M_ASYNC) ? 1708 SERIAL_ASYNC : SERIAL_HDLC; 1709 CX_UNLOCK (bd); 1710 splx (s); 1711 return 0; 1712 1713 case SERIAL_SETMODE: 1714 CX_DEBUG2 (d, ("ioctl: setmode\n")); 1715 /* Only for superuser! */ 1716 error = suser (td); 1717 if (error) 1718 return error; 1719 1720 /* Somebody is waiting for carrier? */ 1721 if (d->lock) 1722 return EBUSY; 1723 /* /dev/ttyXX is already opened by someone? */ 1724 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1725 (d->open_dev|0x2)) 1726 return EBUSY; 1727 /* Network interface is up? 1728 * Cannot change to async mode. */ 1729 if (c->mode != M_ASYNC && d->running && 1730 (*(int*)data == SERIAL_ASYNC)) 1731 return EBUSY; 1732 1733 s = splhigh (); 1734 CX_LOCK (bd); 1735 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) { 1736 cx_set_mode (c, M_ASYNC); 1737 cx_enable_receive (c, 0); 1738 cx_enable_transmit (c, 0); 1739 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) { 1740 cx_set_mode (c, M_HDLC); 1741 cx_enable_receive (c, 1); 1742 cx_enable_transmit (c, 1); 1743 } 1744 CX_UNLOCK (bd); 1745 splx (s); 1746 return 0; 1747 1748 case SERIAL_GETSTAT: 1749 CX_DEBUG2 (d, ("ioctl: getestat\n")); 1750 st = (struct serial_statistics*) data; 1751 s = splhigh (); 1752 CX_LOCK (bd); 1753 st->rintr = c->rintr; 1754 st->tintr = c->tintr; 1755 st->mintr = c->mintr; 1756 st->ibytes = c->ibytes; 1757 st->ipkts = c->ipkts; 1758 st->ierrs = c->ierrs; 1759 st->obytes = c->obytes; 1760 st->opkts = c->opkts; 1761 st->oerrs = c->oerrs; 1762 CX_UNLOCK (bd); 1763 splx (s); 1764 return 0; 1765 1766 case SERIAL_CLRSTAT: 1767 CX_DEBUG2 (d, ("ioctl: clrstat\n")); 1768 /* Only for superuser! */ 1769 error = suser (td); 1770 if (error) 1771 return error; 1772 s = splhigh (); 1773 CX_LOCK (bd); 1774 c->rintr = 0; 1775 c->tintr = 0; 1776 c->mintr = 0; 1777 c->ibytes = 0; 1778 c->ipkts = 0; 1779 c->ierrs = 0; 1780 c->obytes = 0; 1781 c->opkts = 0; 1782 c->oerrs = 0; 1783 CX_UNLOCK (bd); 1784 splx (s); 1785 return 0; 1786 1787 case SERIAL_GETBAUD: 1788 CX_DEBUG2 (d, ("ioctl: getbaud\n")); 1789 if (c->mode == M_ASYNC) 1790 return EINVAL; 1791 s = splhigh (); 1792 CX_LOCK (bd); 1793 *(long*)data = cx_get_baud(c); 1794 CX_UNLOCK (bd); 1795 splx (s); 1796 return 0; 1797 1798 case SERIAL_SETBAUD: 1799 CX_DEBUG2 (d, ("ioctl: setbaud\n")); 1800 /* Only for superuser! */ 1801 error = suser (td); 1802 if (error) 1803 return error; 1804 if (c->mode == M_ASYNC) 1805 return EINVAL; 1806 s = splhigh (); 1807 CX_LOCK (bd); 1808 cx_set_baud (c, *(long*)data); 1809 CX_UNLOCK (bd); 1810 splx (s); 1811 return 0; 1812 1813 case SERIAL_GETLOOP: 1814 CX_DEBUG2 (d, ("ioctl: getloop\n")); 1815 if (c->mode == M_ASYNC) 1816 return EINVAL; 1817 s = splhigh (); 1818 CX_LOCK (bd); 1819 *(int*)data = cx_get_loop (c); 1820 CX_UNLOCK (bd); 1821 splx (s); 1822 return 0; 1823 1824 case SERIAL_SETLOOP: 1825 CX_DEBUG2 (d, ("ioctl: setloop\n")); 1826 /* Only for superuser! */ 1827 error = suser (td); 1828 if (error) 1829 return error; 1830 if (c->mode == M_ASYNC) 1831 return EINVAL; 1832 s = splhigh (); 1833 CX_LOCK (bd); 1834 cx_set_loop (c, *(int*)data); 1835 CX_UNLOCK (bd); 1836 splx (s); 1837 return 0; 1838 1839 case SERIAL_GETDPLL: 1840 CX_DEBUG2 (d, ("ioctl: getdpll\n")); 1841 if (c->mode == M_ASYNC) 1842 return EINVAL; 1843 s = splhigh (); 1844 CX_LOCK (bd); 1845 *(int*)data = cx_get_dpll (c); 1846 CX_UNLOCK (bd); 1847 splx (s); 1848 return 0; 1849 1850 case SERIAL_SETDPLL: 1851 CX_DEBUG2 (d, ("ioctl: setdpll\n")); 1852 /* Only for superuser! */ 1853 error = suser (td); 1854 if (error) 1855 return error; 1856 if (c->mode == M_ASYNC) 1857 return EINVAL; 1858 s = splhigh (); 1859 CX_LOCK (bd); 1860 cx_set_dpll (c, *(int*)data); 1861 CX_UNLOCK (bd); 1862 splx (s); 1863 return 0; 1864 1865 case SERIAL_GETNRZI: 1866 CX_DEBUG2 (d, ("ioctl: getnrzi\n")); 1867 if (c->mode == M_ASYNC) 1868 return EINVAL; 1869 s = splhigh (); 1870 CX_LOCK (bd); 1871 *(int*)data = cx_get_nrzi (c); 1872 CX_UNLOCK (bd); 1873 splx (s); 1874 return 0; 1875 1876 case SERIAL_SETNRZI: 1877 CX_DEBUG2 (d, ("ioctl: setnrzi\n")); 1878 /* Only for superuser! */ 1879 error = suser (td); 1880 if (error) 1881 return error; 1882 if (c->mode == M_ASYNC) 1883 return EINVAL; 1884 s = splhigh (); 1885 CX_LOCK (bd); 1886 cx_set_nrzi (c, *(int*)data); 1887 CX_UNLOCK (bd); 1888 splx (s); 1889 return 0; 1890 1891 case SERIAL_GETDEBUG: 1892 CX_DEBUG2 (d, ("ioctl: getdebug\n")); 1893 s = splhigh (); 1894 CX_LOCK (bd); 1895 *(int*)data = c->debug; 1896 CX_UNLOCK (bd); 1897 splx (s); 1898 return 0; 1899 1900 case SERIAL_SETDEBUG: 1901 CX_DEBUG2 (d, ("ioctl: setdebug\n")); 1902 /* Only for superuser! */ 1903 error = suser (td); 1904 if (error) 1905 return error; 1906 s = splhigh (); 1907 CX_LOCK (bd); 1908 c->debug = *(int*)data; 1909 CX_UNLOCK (bd); 1910 splx (s); 1911#ifndef NETGRAPH 1912 if (d->chan->debug) 1913 d->ifp->if_flags |= IFF_DEBUG; 1914 else 1915 d->ifp->if_flags &= (~IFF_DEBUG); 1916#endif 1917 return 0; 1918 } 1919 1920 switch (cmd) { 1921 case TIOCSDTR: /* Set DTR */ 1922 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n")); 1923 s = splhigh (); 1924 CX_LOCK (bd); 1925 cx_set_dtr (c, 1); 1926 CX_UNLOCK (bd); 1927 splx (s); 1928 return 0; 1929 1930 case TIOCCDTR: /* Clear DTR */ 1931 CX_DEBUG2 (d, ("ioctl: tioccdtr\n")); 1932 s = splhigh (); 1933 CX_LOCK (bd); 1934 cx_set_dtr (c, 0); 1935 CX_UNLOCK (bd); 1936 splx (s); 1937 return 0; 1938 1939 case TIOCMSET: /* Set DTR/RTS */ 1940 CX_DEBUG2 (d, ("ioctl: tiocmset\n")); 1941 s = splhigh (); 1942 CX_LOCK (bd); 1943 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0); 1944 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0); 1945 CX_UNLOCK (bd); 1946 splx (s); 1947 return 0; 1948 1949 case TIOCMBIS: /* Add DTR/RTS */ 1950 CX_DEBUG2 (d, ("ioctl: tiocmbis\n")); 1951 s = splhigh (); 1952 CX_LOCK (bd); 1953 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1); 1954 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1); 1955 CX_UNLOCK (bd); 1956 splx (s); 1957 return 0; 1958 1959 case TIOCMBIC: /* Clear DTR/RTS */ 1960 CX_DEBUG2 (d, ("ioctl: tiocmbic\n")); 1961 s = splhigh (); 1962 CX_LOCK (bd); 1963 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0); 1964 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0); 1965 CX_UNLOCK (bd); 1966 splx (s); 1967 return 0; 1968 1969 case TIOCMGET: /* Get modem status */ 1970 CX_DEBUG2 (d, ("ioctl: tiocmget\n")); 1971 *(int*)data = cx_modem_status (d); 1972 return 0; 1973 1974 } 1975 1976 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd)); 1977 return ENOTTY; 1978} 1979 1980void cx_softintr (void *unused) 1981{ 1982 drv_t *d; 1983 bdrv_t *bd; 1984 async_q *q; 1985 int i, s, ic, k; 1986 while (MY_SOFT_INTR) { 1987 MY_SOFT_INTR = 0; 1988 for (i=0; i<NCX*NCHAN; ++i) { 1989 d = channel [i]; 1990 if (!d || !d->chan || d->chan->type == T_NONE 1991 || d->chan->mode != M_ASYNC || !d->tty 1992 || !d->tty->t_dev) 1993 continue; 1994 bd = d->board->sys; 1995 s = splhigh (); 1996 CX_LOCK (bd); 1997 if (d->intr_action & CX_READ) { 1998 q = &(d->aqueue); 1999 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) { 2000 k = AQ_GSZ(q); 2001 if (d->tty->t_rawq.c_cc + k > 2002 d->tty->t_ihiwat 2003 && (d->tty->t_cflag & CRTS_IFLOW 2004 || d->tty->t_iflag & IXOFF) 2005 && !(d->tty->t_state & TS_TBLOCK)) 2006 ttyblock(d->tty); 2007 d->tty->t_rawcc += k; 2008 while (k>0) { 2009 k--; 2010 AQ_POP (q, ic); 2011 CX_UNLOCK (bd); 2012 splx (s); 2013 putc (ic, &d->tty->t_rawq); 2014 s = splhigh (); 2015 CX_LOCK (bd); 2016 } 2017 ttwakeup(d->tty); 2018 if (d->tty->t_state & TS_TTSTOP 2019 && (d->tty->t_iflag & IXANY 2020 || d->tty->t_cc[VSTART] == 2021 d->tty->t_cc[VSTOP])) { 2022 d->tty->t_state &= ~TS_TTSTOP; 2023 d->tty->t_lflag &= ~FLUSHO; 2024 d->intr_action |= CX_WRITE; 2025 } 2026 } else { 2027 while (q->end != q->beg) { 2028 AQ_POP (q, ic); 2029 CX_UNLOCK (bd); 2030 splx (s); 2031 ttyld_rint (d->tty, ic); 2032 s = splhigh (); 2033 CX_LOCK (bd); 2034 } 2035 } 2036 d->intr_action &= ~CX_READ; 2037 } 2038 splx (s); 2039 CX_UNLOCK (bd); 2040 2041 s = splhigh (); 2042 CX_LOCK (bd); 2043 if (d->intr_action & CX_WRITE) { 2044 if (d->tty->t_line) 2045 ttyld_start (d->tty); 2046 else 2047 cx_oproc (d->tty); 2048 d->intr_action &= ~CX_WRITE; 2049 } 2050 CX_UNLOCK (bd); 2051 splx (s); 2052 2053 } 2054 } 2055} 2056 2057/* 2058 * Fill transmitter buffer with data. 2059 */ 2060static void cx_oproc (struct tty *tp) 2061{ 2062 int s, k; 2063 drv_t *d; 2064 bdrv_t *bd; 2065 static u_char buf[DMABUFSZ]; 2066 u_char *p; 2067 u_short len = 0, sublen = 0; 2068 2069 d = tp->t_sc; 2070 bd = d->board->sys; 2071 2072 CX_DEBUG2 (d, ("cx_oproc\n")); 2073 2074 s = splhigh (); 2075 CX_LOCK (bd); 2076 2077 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts) 2078 cx_set_rts (d->chan, 0); 2079 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts) 2080 cx_set_rts (d->chan, 1); 2081 2082 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) { 2083 /* Start transmitter. */ 2084 cx_enable_transmit (d->chan, 1); 2085 2086 /* Is it busy? */ 2087 if (! cx_buf_free (d->chan)) { 2088 tp->t_state |= TS_BUSY; 2089 CX_UNLOCK (bd); 2090 splx (s); 2091 return; 2092 } 2093 if (tp->t_iflag & IXOFF) { 2094 p = (buf + (DMABUFSZ/2)); 2095 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2096 k = sublen; 2097 while (k--) { 2098 /* Send XON/XOFF out of band. */ 2099 if (*p == tp->t_cc[VSTOP]) { 2100 cx_xflow_ctl (d->chan, 0); 2101 p++; 2102 continue; 2103 } 2104 if (*p == tp->t_cc[VSTART]) { 2105 cx_xflow_ctl (d->chan, 1); 2106 p++; 2107 continue; 2108 } 2109 buf[len] = *p; 2110 len++; 2111 p++; 2112 } 2113 } else { 2114 p = buf; 2115 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2116 } 2117 if (len) { 2118 cx_send_packet (d->chan, buf, len, 0); 2119 tp->t_state |= TS_BUSY; 2120 d->atimeout = 10; 2121 CX_DEBUG2 (d, ("out %d bytes\n", len)); 2122 } 2123 } 2124 ttwwakeup (tp); 2125 CX_UNLOCK (bd); 2126 splx (s); 2127} 2128 2129static int cx_param (struct tty *tp, struct termios *t) 2130{ 2131 drv_t *d; 2132 bdrv_t *bd; 2133 int s, bits, parity; 2134 2135 d = tp->t_sc; 2136 bd = d->board->sys; 2137 2138 s = splhigh (); 2139 CX_LOCK (bd); 2140 if (t->c_ospeed == 0) { 2141 /* Clear DTR and RTS. */ 2142 cx_set_dtr (d->chan, 0); 2143 CX_UNLOCK (bd); 2144 splx (s); 2145 CX_DEBUG2 (d, ("cx_param (hangup)\n")); 2146 return 0; 2147 } 2148 CX_DEBUG2 (d, ("cx_param\n")); 2149 2150 /* Check requested parameters. */ 2151 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) { 2152 CX_UNLOCK (bd); 2153 splx (s); 2154 return EINVAL; 2155 } 2156 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) { 2157 CX_UNLOCK (bd); 2158 splx (s); 2159 return EINVAL; 2160 } 2161 2162 /* And copy them to tty and channel structures. */ 2163 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed; 2164 tp->t_cflag = t->c_cflag; 2165 2166 /* Set character length and parity mode. */ 2167 switch (t->c_cflag & CSIZE) { 2168 default: 2169 case CS8: bits = 8; break; 2170 case CS7: bits = 7; break; 2171 case CS6: bits = 6; break; 2172 case CS5: bits = 5; break; 2173 } 2174 2175 parity = ((t->c_cflag & PARENB) ? 1 : 0) * 2176 (1 + ((t->c_cflag & PARODD) ? 0 : 1)); 2177 2178 /* Set current channel number. */ 2179 if (! d->chan->dtr) 2180 cx_set_dtr (d->chan, 1); 2181 2182 ttyldoptim (tp); 2183 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB), 2184 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS), 2185 (t->c_iflag & IXON), (t->c_iflag & IXANY), 2186 t->c_cc[VSTART], t->c_cc[VSTOP]); 2187 CX_UNLOCK (bd); 2188 splx (s); 2189 return 0; 2190} 2191 2192/* 2193 * Stop output on a line 2194 */ 2195static void cx_stop (struct tty *tp, int flag) 2196{ 2197 drv_t *d; 2198 bdrv_t *bd; 2199 int s; 2200 2201 d = tp->t_sc; 2202 bd = d->board->sys; 2203 2204 s = splhigh (); 2205 CX_LOCK (bd); 2206 if (tp->t_state & TS_BUSY) { 2207 /* Stop transmitter */ 2208 CX_DEBUG2 (d, ("cx_stop\n")); 2209 cx_transmitter_ctl (d->chan, 0); 2210 } 2211 CX_UNLOCK (bd); 2212 splx (s); 2213} 2214 2215/* 2216 * Process the (delayed) carrier signal setup. 2217 */ 2218static void cx_carrier (void *arg) 2219{ 2220 drv_t *d = arg; 2221 bdrv_t *bd = d->board->sys; 2222 cx_chan_t *c = d->chan; 2223 int s, cd; 2224 2225 s = splhigh (); 2226 CX_LOCK (bd); 2227 cd = cx_get_cd (c); 2228 if (d->cd != cd) { 2229 if (cd) { 2230 CX_DEBUG (d, ("carrier on\n")); 2231 d->cd = 1; 2232 CX_UNLOCK (bd); 2233 splx (s); 2234 if (d->tty) 2235 ttyld_modem(d->tty, 1); 2236 } else { 2237 CX_DEBUG (d, ("carrier loss\n")); 2238 d->cd = 0; 2239 CX_UNLOCK (bd); 2240 splx (s); 2241 if (d->tty) 2242 ttyld_modem(d->tty, 0); 2243 } 2244 } 2245} 2246 2247/* 2248 * Modem signal callback function. 2249 */ 2250static void cx_modem (cx_chan_t *c) 2251{ 2252 drv_t *d = c->sys; 2253 2254 if (!d || c->mode != M_ASYNC) 2255 return; 2256 /* Handle carrier detect/loss. */ 2257 /* Carrier changed - delay processing DCD for a while 2258 * to give both sides some time to initialize. */ 2259 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d); 2260} 2261 2262static struct cdevsw cx_cdevsw = { 2263 .d_version = D_VERSION, 2264 .d_open = cx_open, 2265 .d_close = cx_close, 2266 .d_ioctl = cx_ioctl, 2267 .d_name = "cx", 2268 .d_flags = D_TTY | D_NEEDGIANT, 2269}; 2270 2271#ifdef NETGRAPH 2272static int ng_cx_constructor (node_p node) 2273{ 2274 drv_t *d = NG_NODE_PRIVATE (node); 2275 CX_DEBUG (d, ("Constructor\n")); 2276 return EINVAL; 2277} 2278 2279static int ng_cx_newhook (node_p node, hook_p hook, const char *name) 2280{ 2281 int s; 2282 drv_t *d = NG_NODE_PRIVATE (node); 2283 bdrv_t *bd = d->board->sys; 2284 2285 if (d->chan->mode == M_ASYNC) 2286 return EINVAL; 2287 2288 /* Attach debug hook */ 2289 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) { 2290 NG_HOOK_SET_PRIVATE (hook, NULL); 2291 d->debug_hook = hook; 2292 return 0; 2293 } 2294 2295 /* Check for raw hook */ 2296 if (strcmp (name, NG_CX_HOOK_RAW) != 0) 2297 return EINVAL; 2298 2299 NG_HOOK_SET_PRIVATE (hook, d); 2300 d->hook = hook; 2301 s = splhigh (); 2302 CX_LOCK (bd); 2303 cx_up (d); 2304 CX_UNLOCK (bd); 2305 splx (s); 2306 return 0; 2307} 2308 2309static int print_modems (char *s, cx_chan_t *c, int need_header) 2310{ 2311 int status = cx_modem_status (c->sys); 2312 int length = 0; 2313 2314 if (need_header) 2315 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n"); 2316 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n", 2317 status & TIOCM_LE ? "On" : "-", 2318 status & TIOCM_DTR ? "On" : "-", 2319 status & TIOCM_DSR ? "On" : "-", 2320 status & TIOCM_RTS ? "On" : "-", 2321 status & TIOCM_CTS ? "On" : "-", 2322 status & TIOCM_CD ? "On" : "-"); 2323 return length; 2324} 2325 2326static int print_stats (char *s, cx_chan_t *c, int need_header) 2327{ 2328 int length = 0; 2329 2330 if (need_header) 2331 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n"); 2332 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n", 2333 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts, 2334 c->ierrs, c->obytes, c->opkts, c->oerrs); 2335 return length; 2336} 2337 2338static int print_chan (char *s, cx_chan_t *c) 2339{ 2340 drv_t *d = c->sys; 2341 int length = 0; 2342 2343 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num); 2344 if (d->chan->debug) 2345 length += sprintf (s + length, " debug=%d", d->chan->debug); 2346 2347 if (cx_get_baud (c)) 2348 length += sprintf (s + length, " %ld", cx_get_baud (c)); 2349 else 2350 length += sprintf (s + length, " extclock"); 2351 2352 if (c->mode == M_HDLC) { 2353 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off"); 2354 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off"); 2355 } 2356 2357 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n"); 2358 return length; 2359} 2360 2361static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook) 2362{ 2363 drv_t *d = NG_NODE_PRIVATE (node); 2364 struct ng_mesg *msg; 2365 struct ng_mesg *resp = NULL; 2366 int error = 0; 2367 2368 if (!d) 2369 return EINVAL; 2370 2371 CX_DEBUG (d, ("Rcvmsg\n")); 2372 NGI_GET_MSG (item, msg); 2373 switch (msg->header.typecookie) { 2374 default: 2375 error = EINVAL; 2376 break; 2377 2378 case NGM_CX_COOKIE: 2379 printf ("Don't forget to implement\n"); 2380 error = EINVAL; 2381 break; 2382 2383 case NGM_GENERIC_COOKIE: 2384 switch (msg->header.cmd) { 2385 default: 2386 error = EINVAL; 2387 break; 2388 2389 case NGM_TEXT_STATUS: { 2390 char *s; 2391 int l = 0; 2392 int dl = sizeof (struct ng_mesg) + 730; 2393 2394 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT); 2395 if (! resp) { 2396 error = ENOMEM; 2397 break; 2398 } 2399 bzero (resp, dl); 2400 s = (resp)->data; 2401 l += print_chan (s + l, d->chan); 2402 l += print_stats (s + l, d->chan, 1); 2403 l += print_modems (s + l, d->chan, 1); 2404 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRLEN); 2405 } 2406 break; 2407 } 2408 break; 2409 } 2410 NG_RESPOND_MSG (error, node, item, resp); 2411 NG_FREE_MSG (msg); 2412 return error; 2413} 2414 2415static int ng_cx_rcvdata (hook_p hook, item_p item) 2416{ 2417 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook)); 2418 struct mbuf *m; 2419 struct ng_tag_prio *ptag; 2420 bdrv_t *bd; 2421 struct ifqueue *q; 2422 int s; 2423 2424 NGI_GET_M (item, m); 2425 NG_FREE_ITEM (item); 2426 if (! NG_HOOK_PRIVATE (hook) || ! d) { 2427 NG_FREE_M (m); 2428 return ENETDOWN; 2429 } 2430 2431 bd = d->board->sys; 2432 /* Check for high priority data */ 2433 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE, 2434 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) ) 2435 q = &d->hi_queue; 2436 else 2437 q = &d->lo_queue; 2438 2439 s = splhigh (); 2440 CX_LOCK (bd); 2441 IF_LOCK (q); 2442 if (_IF_QFULL (q)) { 2443 _IF_DROP (q); 2444 IF_UNLOCK (q); 2445 CX_UNLOCK (bd); 2446 splx (s); 2447 NG_FREE_M (m); 2448 return ENOBUFS; 2449 } 2450 _IF_ENQUEUE (q, m); 2451 IF_UNLOCK (q); 2452 cx_start (d); 2453 CX_UNLOCK (bd); 2454 splx (s); 2455 return 0; 2456} 2457 2458static int ng_cx_rmnode (node_p node) 2459{ 2460 drv_t *d = NG_NODE_PRIVATE (node); 2461 bdrv_t *bd; 2462 2463 CX_DEBUG (d, ("Rmnode\n")); 2464 if (d && d->running) { 2465 int s = splhigh (); 2466 bd = d->board->sys; 2467 CX_LOCK (bd); 2468 cx_down (d); 2469 CX_UNLOCK (bd); 2470 splx (s); 2471 } 2472#ifdef KLD_MODULE 2473 if (node->nd_flags & NGF_REALLY_DIE) { 2474 NG_NODE_SET_PRIVATE (node, NULL); 2475 NG_NODE_UNREF (node); 2476 } 2477 NG_NODE_REVIVE(node); /* Persistant node */ 2478#endif 2479 return 0; 2480} 2481 2482static void ng_cx_watchdog (void *arg) 2483{ 2484 drv_t *d = arg; 2485 2486 if (d->timeout == 1) 2487 cx_watchdog (d); 2488 if (d->timeout) 2489 d->timeout--; 2490 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2491} 2492 2493static int ng_cx_connect (hook_p hook) 2494{ 2495 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2496 2497 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2498 return 0; 2499} 2500 2501static int ng_cx_disconnect (hook_p hook) 2502{ 2503 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2504 bdrv_t *bd = d->board->sys; 2505 int s; 2506 2507 s = splhigh (); 2508 CX_LOCK (bd); 2509 if (NG_HOOK_PRIVATE (hook)) 2510 cx_down (d); 2511 CX_UNLOCK (bd); 2512 splx (s); 2513 /* If we were wait it than it reasserted now, just stop it. */ 2514 if (!callout_drain (&d->timeout_handle)) 2515 callout_stop (&d->timeout_handle); 2516 return 0; 2517} 2518#endif /*NETGRAPH*/ 2519 2520static int cx_modevent (module_t mod, int type, void *unused) 2521{ 2522 static int load_count = 0; 2523 2524 if (!debug_mpsafenet && cx_mpsafenet) { 2525 printf ("WORNING! Network stack is not MPSAFE. " 2526 "Turning off debug.cx.mpsafenet.\n"); 2527 cx_mpsafenet = 0; 2528 } 2529 if (cx_mpsafenet) 2530 cx_cdevsw.d_flags &= ~D_NEEDGIANT; 2531 2532 switch (type) { 2533 case MOD_LOAD: 2534#ifdef NETGRAPH 2535 if (ng_newtype (&typestruct)) 2536 printf ("Failed to register ng_cx\n"); 2537#endif 2538 ++load_count; 2539 2540 callout_init (&timeout_handle, cx_mpsafenet?CALLOUT_MPSAFE:0); 2541 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 2542 /* Software interrupt. */ 2543 swi_add(&tty_ithd, "cx", cx_softintr, NULL, SWI_TTY, 2544 (cx_mpsafenet?INTR_MPSAFE:0), &cx_fast_ih); 2545 break; 2546 case MOD_UNLOAD: 2547 if (load_count == 1) { 2548 printf ("Removing device entry for Sigma\n"); 2549#ifdef NETGRAPH 2550 ng_rmtype (&typestruct); 2551#endif 2552 } 2553 /* If we were wait it than it reasserted now, just stop it. */ 2554 if (!callout_drain (&timeout_handle)) 2555 callout_stop (&timeout_handle); 2556 ithread_remove_handler (cx_fast_ih); 2557 --load_count; 2558 break; 2559 case MOD_SHUTDOWN: 2560 break; 2561 } 2562 return 0; 2563} 2564 2565#ifdef NETGRAPH 2566static struct ng_type typestruct = { 2567 .version = NG_ABI_VERSION, 2568 .name = NG_CX_NODE_TYPE, 2569 .constructor = ng_cx_constructor, 2570 .rcvmsg = ng_cx_rcvmsg, 2571 .shutdown = ng_cx_rmnode, 2572 .newhook = ng_cx_newhook, 2573 .connect = ng_cx_connect, 2574 .rcvdata = ng_cx_rcvdata, 2575 .disconnect = ng_cx_disconnect, 2576}; 2577#endif /*NETGRAPH*/ 2578 2579#ifdef NETGRAPH 2580MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 2581#else 2582MODULE_DEPEND (isa_cx, sppp, 1, 1, 1); 2583#endif 2584DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL); 2585MODULE_VERSION (cx, 1); 2586