if_cx.c revision 150622
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 150622 2005-09-27 16:12:49Z 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; 232 233static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td); 234static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td); 235static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td); 236static struct cdevsw cx_cdevsw = { 237 .d_version = D_VERSION, 238 .d_open = cx_open, 239 .d_close = cx_close, 240 .d_ioctl = cx_ioctl, 241 .d_name = "cx", 242 .d_flags = D_TTY | D_NEEDGIANT, 243}; 244 245static int MY_SOFT_INTR; 246 247/* 248 * Print the mbuf chain, for debug purposes only. 249 */ 250static void printmbuf (struct mbuf *m) 251{ 252 printf ("mbuf:"); 253 for (; m; m=m->m_next) { 254 if (m->m_flags & M_PKTHDR) 255 printf (" HDR %d:", m->m_pkthdr.len); 256 if (m->m_flags & M_EXT) 257 printf (" EXT:"); 258 printf (" %d", m->m_len); 259 } 260 printf ("\n"); 261} 262 263/* 264 * Make an mbuf from data. 265 */ 266static struct mbuf *makembuf (void *buf, u_int len) 267{ 268 struct mbuf *m, *o, *p; 269 270 MGETHDR (m, M_DONTWAIT, MT_DATA); 271 272 if (! m) 273 return 0; 274 275 if (len >= MINCLSIZE) 276 MCLGET (m, M_DONTWAIT); 277 278 m->m_pkthdr.len = len; 279 m->m_len = 0; 280 281 p = m; 282 while (len) { 283 u_int n = M_TRAILINGSPACE (p); 284 if (n > len) 285 n = len; 286 if (! n) { 287 /* Allocate new mbuf. */ 288 o = p; 289 MGET (p, M_DONTWAIT, MT_DATA); 290 if (! p) { 291 m_freem (m); 292 return 0; 293 } 294 if (len >= MINCLSIZE) 295 MCLGET (p, M_DONTWAIT); 296 p->m_len = 0; 297 o->m_next = p; 298 299 n = M_TRAILINGSPACE (p); 300 if (n > len) 301 n = len; 302 } 303 bcopy (buf, mtod (p, caddr_t) + p->m_len, n); 304 305 p->m_len += n; 306 buf = n + (char*) buf; 307 len -= n; 308 } 309 return m; 310} 311 312/* 313 * Recover after lost transmit interrupts. 314 */ 315static void cx_timeout (void *arg) 316{ 317 drv_t *d; 318 int s, i, k; 319 320 for (i = 0; i < NCX; i++) { 321 if (adapter[i] == NULL) 322 continue; 323 for (k = 0; k < NCHAN; ++k) { 324 d = channel[i * NCHAN + k]; 325 if (! d) 326 continue; 327 s = splhigh (); 328 CX_LOCK ((bdrv_t *)d->board->sys); 329 if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) { 330 d->tty->t_state &= ~TS_BUSY; 331 if (d->tty->t_dev) { 332 d->intr_action |= CX_WRITE; 333 MY_SOFT_INTR = 1; 334 swi_sched (cx_fast_ih, 0); 335 } 336 CX_DEBUG (d, ("cx_timeout\n")); 337 } 338 if (d->atimeout) 339 d->atimeout--; 340 CX_UNLOCK ((bdrv_t *)d->board->sys); 341 splx (s); 342 } 343 } 344 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 345} 346 347static void cx_led_off (void *arg) 348{ 349 cx_board_t *b = arg; 350 bdrv_t *bd = b->sys; 351 int s; 352 353 s = splhigh (); 354 CX_LOCK (bd); 355 cx_led (b, 0); 356 CX_UNLOCK (bd); 357 splx (s); 358} 359 360/* 361 * Activate interupt handler from DDK. 362 */ 363static void cx_intr (void *arg) 364{ 365 bdrv_t *bd = arg; 366 cx_board_t *b = bd->board; 367#ifndef NETGRAPH 368 int i; 369#endif 370 int s = splhigh (); 371 372 CX_LOCK (bd); 373 /* Turn LED on. */ 374 cx_led (b, 1); 375 376 cx_int_handler (b); 377 378 /* Turn LED off 50 msec later. */ 379 callout_reset (&led_timo[b->num], hz/20, cx_led_off, b); 380 CX_UNLOCK (bd); 381 splx (s); 382 383#ifndef NETGRAPH 384 /* Pass packets in a lock-free state */ 385 for (i = 0; i < NCHAN && b->chan[i].type; i++) { 386 drv_t *d = b->chan[i].sys; 387 struct mbuf *m; 388 if (!d || !d->running) 389 continue; 390 while (_IF_QLEN(&d->queue)) { 391 IF_DEQUEUE (&d->queue,m); 392 if (!m) 393 continue; 394 sppp_input (d->ifp, m); 395 } 396 } 397#endif 398} 399 400static int probe_irq (cx_board_t *b, int irq) 401{ 402 int mask, busy, cnt; 403 404 /* Clear pending irq, if any. */ 405 cx_probe_irq (b, -irq); 406 DELAY (100); 407 for (cnt=0; cnt<5; ++cnt) { 408 /* Get the mask of pending irqs, assuming they are busy. 409 * Activate the adapter on given irq. */ 410 busy = cx_probe_irq (b, irq); 411 DELAY (100); 412 413 /* Get the mask of active irqs. 414 * Deactivate our irq. */ 415 mask = cx_probe_irq (b, -irq); 416 DELAY (100); 417 if ((mask & ~busy) == 1 << irq) { 418 cx_probe_irq (b, 0); 419 /* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n", 420 b->num, irq, mask, busy); */ 421 return 1; 422 } 423 } 424 /* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n", 425 b->num, irq, mask, busy); */ 426 cx_probe_irq (b, 0); 427 return 0; 428} 429 430static short porttab [] = { 431 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 432 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 433}; 434static char dmatab [] = { 7, 6, 5, 0 }; 435static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 }; 436 437static int cx_is_free_res (device_t dev, int rid, int type, u_long start, 438 u_long end, u_long count) 439{ 440 struct resource *res; 441 442 if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count, 443 RF_ALLOCATED))) 444 return 0; 445 446 bus_release_resource (dev, type, rid, res); 447 448 return 1; 449} 450 451static void cx_identify (driver_t *driver, device_t dev) 452{ 453 u_long iobase, rescount; 454 int devcount; 455 device_t *devices; 456 device_t child; 457 devclass_t my_devclass; 458 int i, k; 459 460 if ((my_devclass = devclass_find ("cx")) == NULL) 461 return; 462 463 devclass_get_devices (my_devclass, &devices, &devcount); 464 465 if (devcount == 0) { 466 /* We should find all devices by our self. We could alter other 467 * devices, but we don't have a choise 468 */ 469 for (i = 0; (iobase = porttab [i]) != 0; i++) { 470 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 471 iobase, iobase + NPORT, NPORT)) 472 continue; 473 if (cx_probe_board (iobase, -1, -1) == 0) 474 continue; 475 476 devcount++; 477 478 child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx", 479 -1); 480 481 if (child == NULL) 482 return; 483 484 device_set_desc_copy (child, "Cronyx Sigma"); 485 device_set_driver (child, driver); 486 bus_set_resource (child, SYS_RES_IOPORT, 0, 487 iobase, NPORT); 488 489 if (devcount >= NCX) 490 break; 491 } 492 } else { 493 static short porttab [] = { 494 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 495 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 496 }; 497 /* Lets check user choise. 498 */ 499 for (k = 0; k < devcount; k++) { 500 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 501 &iobase, &rescount) != 0) 502 continue; 503 504 for (i = 0; porttab [i] != 0; i++) { 505 if (porttab [i] != iobase) 506 continue; 507 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 508 iobase, iobase + NPORT, NPORT)) 509 continue; 510 if (cx_probe_board (iobase, -1, -1) == 0) 511 continue; 512 porttab [i] = -1; 513 device_set_desc_copy (devices[k], "Cronyx Sigma"); 514 break; 515 } 516 517 if (porttab [i] == 0) { 518 device_delete_child ( 519 device_get_parent (devices[k]), 520 devices [k]); 521 devices[k] = 0; 522 continue; 523 } 524 } 525 for (k = 0; k < devcount; k++) { 526 if (devices[k] == 0) 527 continue; 528 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 529 &iobase, &rescount) == 0) 530 continue; 531 for (i = 0; (iobase = porttab [i]) != 0; i++) { 532 if (porttab [i] == -1) { 533 continue; 534 } 535 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 536 iobase, iobase + NPORT, NPORT)) 537 continue; 538 if (cx_probe_board (iobase, -1, -1) == 0) 539 continue; 540 541 bus_set_resource (devices[k], SYS_RES_IOPORT, 0, 542 iobase, NPORT); 543 porttab [i] = -1; 544 device_set_desc_copy (devices[k], "Cronyx Sigma"); 545 break; 546 } 547 if (porttab [i] == 0) { 548 device_delete_child ( 549 device_get_parent (devices[k]), 550 devices [k]); 551 } 552 } 553 free (devices, M_TEMP); 554 } 555 556 return; 557} 558 559static int cx_probe (device_t dev) 560{ 561 int unit = device_get_unit (dev); 562 int i; 563 u_long iobase, rescount; 564 565 if (!device_get_desc (dev) || 566 strcmp (device_get_desc (dev), "Cronyx Sigma")) 567 return ENXIO; 568 569 if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) { 570 printf ("cx%d: Couldn't get IOPORT\n", unit); 571 return ENXIO; 572 } 573 574 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 575 iobase, iobase + NPORT, NPORT)) { 576 printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase); 577 return ENXIO; 578 } 579 580 for (i = 0; porttab [i] != 0; i++) { 581 if (porttab [i] == iobase) { 582 porttab [i] = -1; 583 break; 584 } 585 } 586 587 if (porttab [i] == 0) { 588 return ENXIO; 589 } 590 591 if (!cx_probe_board (iobase, -1, -1)) { 592 printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase); 593 return ENXIO; 594 } 595 596 return 0; 597} 598 599static void 600cx_bus_dmamap_addr (void *arg, bus_dma_segment_t *segs, int nseg, int error) 601{ 602 unsigned long *addr; 603 604 if (error) 605 return; 606 607 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 608 addr = arg; 609 *addr = segs->ds_addr; 610} 611 612static int 613cx_bus_dma_mem_alloc (int bnum, int cnum, cx_dma_mem_t *dmem) 614{ 615 int error; 616 617 error = bus_dma_tag_create (NULL, 16, 0, BUS_SPACE_MAXADDR_24BIT, 618 BUS_SPACE_MAXADDR, NULL, NULL, dmem->size, 1, 619 dmem->size, 0, NULL, NULL, &dmem->dmat); 620 if (error) { 621 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 622 else printf ("cx%d: ", bnum); 623 printf ("couldn't allocate tag for dma memory\n"); 624 return 0; 625 } 626 error = bus_dmamem_alloc (dmem->dmat, (void **)&dmem->virt, 627 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &dmem->mapp); 628 if (error) { 629 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 630 else printf ("cx%d: ", bnum); 631 printf ("couldn't allocate mem for dma memory\n"); 632 bus_dma_tag_destroy (dmem->dmat); 633 return 0; 634 } 635 error = bus_dmamap_load (dmem->dmat, dmem->mapp, dmem->virt, 636 dmem->size, cx_bus_dmamap_addr, &dmem->phys, 0); 637 if (error) { 638 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 639 else printf ("cx%d: ", bnum); 640 printf ("couldn't load mem map for dma memory\n"); 641 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 642 bus_dma_tag_destroy (dmem->dmat); 643 return 0; 644 } 645 return 1; 646} 647 648static void 649cx_bus_dma_mem_free (cx_dma_mem_t *dmem) 650{ 651 bus_dmamap_unload (dmem->dmat, dmem->mapp); 652 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 653 bus_dma_tag_destroy (dmem->dmat); 654} 655 656/* 657 * The adapter is present, initialize the driver structures. 658 */ 659static int cx_attach (device_t dev) 660{ 661 bdrv_t *bd = device_get_softc (dev); 662 u_long iobase, drq, irq, rescount; 663 int unit = device_get_unit (dev); 664 char *cx_ln = CX_LOCK_NAME; 665 cx_board_t *b; 666 cx_chan_t *c; 667 drv_t *d; 668 int i; 669 int s; 670 671 KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit)); 672 673 bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount); 674 bd->base_rid = 0; 675 bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid, 676 iobase, iobase + NPORT, NPORT, RF_ACTIVE); 677 if (! bd->base_res) { 678 printf ("cx%d: cannot allocate base address\n", unit); 679 return ENXIO; 680 } 681 682 if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) { 683 for (i = 0; (drq = dmatab [i]) != 0; i++) { 684 if (!cx_is_free_res (dev, 0, SYS_RES_DRQ, 685 drq, drq + 1, 1)) 686 continue; 687 bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1); 688 break; 689 } 690 691 if (dmatab[i] == 0) { 692 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 693 bd->base_res); 694 printf ("cx%d: Couldn't get DRQ\n", unit); 695 return ENXIO; 696 } 697 } 698 699 bd->drq_rid = 0; 700 bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid, 701 drq, drq + 1, 1, RF_ACTIVE); 702 if (! bd->drq_res) { 703 printf ("cx%d: cannot allocate drq\n", unit); 704 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 705 bd->base_res); 706 return ENXIO; 707 } 708 709 if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) { 710 for (i = 0; (irq = irqtab [i]) != 0; i++) { 711 if (!cx_is_free_res (dev, 0, SYS_RES_IRQ, 712 irq, irq + 1, 1)) 713 continue; 714 bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1); 715 break; 716 } 717 718 if (irqtab[i] == 0) { 719 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 720 bd->drq_res); 721 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 722 bd->base_res); 723 printf ("cx%d: Couldn't get IRQ\n", unit); 724 return ENXIO; 725 } 726 } 727 728 bd->irq_rid = 0; 729 bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid, 730 irq, irq + 1, 1, RF_ACTIVE); 731 if (! bd->irq_res) { 732 printf ("cx%d: Couldn't allocate irq\n", unit); 733 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 734 bd->drq_res); 735 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 736 bd->base_res); 737 return ENXIO; 738 } 739 740 b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK); 741 if (!b) { 742 printf ("cx:%d: Couldn't allocate memory\n", unit); 743 return (ENXIO); 744 } 745 adapter[unit] = b; 746 bzero (b, sizeof(cx_board_t)); 747 748 if (! cx_open_board (b, unit, iobase, irq, drq)) { 749 printf ("cx%d: error loading firmware\n", unit); 750 free (b, M_DEVBUF); 751 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 752 bd->irq_res); 753 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 754 bd->drq_res); 755 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 756 bd->base_res); 757 return ENXIO; 758 } 759 760 bd->board = b; 761 762 cx_ln[2] = '0' + unit; 763 mtx_init (&bd->cx_mtx, cx_ln, MTX_NETWORK_LOCK, MTX_DEF|MTX_RECURSE); 764 if (! probe_irq (b, irq)) { 765 printf ("cx%d: irq %ld not functional\n", unit, irq); 766 bd->board = 0; 767 adapter [unit] = 0; 768 mtx_destroy (&bd->cx_mtx); 769 free (b, M_DEVBUF); 770 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 771 bd->irq_res); 772 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 773 bd->drq_res); 774 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 775 bd->base_res); 776 return ENXIO; 777 } 778 b->sys = bd; 779 callout_init (&led_timo[b->num], cx_mpsafenet ? CALLOUT_MPSAFE : 0); 780 s = splhigh (); 781 if (bus_setup_intr (dev, bd->irq_res, 782 INTR_TYPE_NET|(cx_mpsafenet?INTR_MPSAFE:0), 783 cx_intr, bd, &bd->intrhand)) { 784 printf ("cx%d: Can't setup irq %ld\n", unit, irq); 785 bd->board = 0; 786 b->sys = 0; 787 adapter [unit] = 0; 788 mtx_destroy (&bd->cx_mtx); 789 free (b, M_DEVBUF); 790 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 791 bd->irq_res); 792 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 793 bd->drq_res); 794 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 795 bd->base_res); 796 splx (s); 797 return ENXIO; 798 } 799 800 CX_LOCK (bd); 801 cx_init (b, b->num, b->port, irq, drq); 802 cx_setup_board (b, 0, 0, 0); 803 CX_UNLOCK (bd); 804 805 printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name); 806 807 for (c=b->chan; c<b->chan+NCHAN; ++c) { 808 if (c->type == T_NONE) 809 continue; 810 d = &bd->channel[c->num]; 811 d->dmamem.size = sizeof(cx_buf_t); 812 if (! cx_bus_dma_mem_alloc (unit, c->num, &d->dmamem)) 813 continue; 814 d->board = b; 815 d->chan = c; 816 d->open_dev = 0; 817 c->sys = d; 818 channel [b->num*NCHAN + c->num] = d; 819 sprintf (d->name, "cx%d.%d", b->num, c->num); 820 821 switch (c->type) { 822 case T_SYNC_RS232: 823 case T_SYNC_V35: 824 case T_SYNC_RS449: 825 case T_UNIV: 826 case T_UNIV_RS232: 827 case T_UNIV_RS449: 828 case T_UNIV_V35: 829#ifdef NETGRAPH 830 if (ng_make_node_common (&typestruct, &d->node) != 0) { 831 printf ("%s: cannot make common node\n", d->name); 832 channel [b->num*NCHAN + c->num] = 0; 833 c->sys = 0; 834 cx_bus_dma_mem_free (&d->dmamem); 835 continue; 836 } 837 NG_NODE_SET_PRIVATE (d->node, d); 838 sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE, 839 c->board->num*NCHAN + c->num); 840 if (ng_name_node (d->node, d->nodename)) { 841 printf ("%s: cannot name node\n", d->nodename); 842 NG_NODE_UNREF (d->node); 843 channel [b->num*NCHAN + c->num] = 0; 844 c->sys = 0; 845 cx_bus_dma_mem_free (&d->dmamem); 846 continue; 847 } 848 d->lo_queue.ifq_maxlen = IFQ_MAXLEN; 849 d->hi_queue.ifq_maxlen = IFQ_MAXLEN; 850 mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF); 851 mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF); 852 callout_init (&d->timeout_handle, 853 cx_mpsafenet ? CALLOUT_MPSAFE : 0); 854#else /*NETGRAPH*/ 855 d->ifp = if_alloc(IFT_PPP); 856 if (d->ifp == NULL) { 857 printf ("%s: cannot if_alloc() common interface\n", 858 d->name); 859 channel [b->num*NCHAN + c->num] = 0; 860 c->sys = 0; 861 cx_bus_dma_mem_free (&d->dmamem); 862 continue; 863 } 864 d->ifp->if_softc = d; 865 if_initname (d->ifp, "cx", b->num * NCHAN + c->num); 866 d->ifp->if_mtu = PP_MTU; 867 d->ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST; 868 if (!cx_mpsafenet) 869 d->ifp->if_flags |= IFF_NEEDSGIANT; 870 d->ifp->if_ioctl = cx_sioctl; 871 d->ifp->if_start = cx_ifstart; 872 d->ifp->if_watchdog = cx_ifwatchdog; 873 d->ifp->if_init = cx_initialize; 874 d->queue.ifq_maxlen = 2; 875 mtx_init (&d->queue.ifq_mtx, "cx_queue", NULL, MTX_DEF); 876 sppp_attach (d->ifp); 877 if_attach (d->ifp); 878 IFP2SP(d->ifp)->pp_tlf = cx_tlf; 879 IFP2SP(d->ifp)->pp_tls = cx_tls; 880 /* If BPF is in the kernel, call the attach for it. 881 * Size of PPP header is 4 bytes. */ 882 bpfattach (d->ifp, DLT_PPP, 4); 883#endif /*NETGRAPH*/ 884 } 885 d->tty = ttyalloc (); 886 d->tty->t_open = cx_topen; 887 d->tty->t_close = cx_tclose; 888 d->tty->t_param = cx_param; 889 d->tty->t_stop = cx_stop; 890 d->tty->t_modem = cx_tmodem; 891 d->tty->t_oproc = cx_oproc; 892 d->tty->t_sc = d; 893 CX_LOCK (bd); 894 cx_start_chan (c, d->dmamem.virt, d->dmamem.phys); 895 cx_register_receive (c, &cx_receive); 896 cx_register_transmit (c, &cx_transmit); 897 cx_register_error (c, &cx_error); 898 cx_register_modem (c, &cx_modem); 899 CX_UNLOCK (bd); 900 901 ttycreate(d->tty, NULL, 0, MINOR_CALLOUT, 902 "x%r%r", b->num, c->num); 903 d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num); 904 d->devt->si_drv1 = d; 905 callout_init (&d->dcd_timeout_handle, 906 cx_mpsafenet ? CALLOUT_MPSAFE : 0); 907 } 908 splx (s); 909 910 return 0; 911} 912 913static int cx_detach (device_t dev) 914{ 915 bdrv_t *bd = device_get_softc (dev); 916 cx_board_t *b = bd->board; 917 cx_chan_t *c; 918 int s; 919 920 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized")); 921 922 s = splhigh (); 923 CX_LOCK (bd); 924 /* Check if the device is busy (open). */ 925 for (c = b->chan; c < b->chan + NCHAN; ++c) { 926 drv_t *d = (drv_t*) c->sys; 927 928 if (!d || d->chan->type == T_NONE) 929 continue; 930 if (d->lock) { 931 CX_UNLOCK (bd); 932 splx (s); 933 return EBUSY; 934 } 935 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 936 (d->open_dev|0x2)) { 937 CX_UNLOCK (bd); 938 splx (s); 939 return EBUSY; 940 } 941 if (d->running) { 942 CX_UNLOCK (bd); 943 splx (s); 944 return EBUSY; 945 } 946 } 947 948 /* Deactivate the timeout routine. And soft interrupt*/ 949 callout_stop (&led_timo[b->num]); 950 951 for (c = b->chan; c < b->chan + NCHAN; ++c) { 952 drv_t *d = c->sys; 953 954 if (!d || d->chan->type == T_NONE) 955 continue; 956 957 callout_stop (&d->dcd_timeout_handle); 958 } 959 CX_UNLOCK (bd); 960 bus_teardown_intr (dev, bd->irq_res, bd->intrhand); 961 bus_deactivate_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 962 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 963 964 bus_deactivate_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 965 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 966 967 bus_deactivate_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->irq_res); 968 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res); 969 970 CX_LOCK (bd); 971 cx_close_board (b); 972 973 /* Detach the interfaces, free buffer memory. */ 974 for (c = b->chan; c < b->chan + NCHAN; ++c) { 975 drv_t *d = (drv_t*) c->sys; 976 977 if (!d || d->chan->type == T_NONE) 978 continue; 979 980 if (d->tty) { 981 ttyfree (d->tty); 982 d->tty = NULL; 983 } 984 985#ifdef NETGRAPH 986 if (d->node) { 987 ng_rmnode_self (d->node); 988 NG_NODE_UNREF (d->node); 989 d->node = NULL; 990 } 991 mtx_destroy (&d->lo_queue.ifq_mtx); 992 mtx_destroy (&d->hi_queue.ifq_mtx); 993#else 994 /* Detach from the packet filter list of interfaces. */ 995 bpfdetach (d->ifp); 996 /* Detach from the sync PPP list. */ 997 sppp_detach (d->ifp); 998 999 if_detach (d->ifp); 1000 if_free(d->ifp); 1001 /* XXXRIK: check interconnection with irq handler */ 1002 IF_DRAIN (&d->queue); 1003 mtx_destroy (&d->queue.ifq_mtx); 1004#endif 1005 destroy_dev (d->devt); 1006 } 1007 1008 cx_led_off (b); 1009 CX_UNLOCK (bd); 1010 callout_drain (&led_timo[b->num]); 1011 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1012 drv_t *d = c->sys; 1013 1014 if (!d || d->chan->type == T_NONE) 1015 continue; 1016 1017 callout_drain (&d->dcd_timeout_handle); 1018 } 1019 splx (s); 1020 1021 s = splhigh (); 1022 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1023 drv_t *d = (drv_t*) c->sys; 1024 1025 if (!d || d->chan->type == T_NONE) 1026 continue; 1027 1028 /* Deallocate buffers. */ 1029 cx_bus_dma_mem_free (&d->dmamem); 1030 } 1031 bd->board = 0; 1032 adapter [b->num] = 0; 1033 free (b, M_DEVBUF); 1034 splx (s); 1035 1036 mtx_destroy (&bd->cx_mtx); 1037 1038 return 0; 1039} 1040 1041#ifndef NETGRAPH 1042static void cx_ifstart (struct ifnet *ifp) 1043{ 1044 drv_t *d = ifp->if_softc; 1045 bdrv_t *bd = d->board->sys; 1046 1047 CX_LOCK (bd); 1048 cx_start (d); 1049 CX_UNLOCK (bd); 1050} 1051 1052static void cx_ifwatchdog (struct ifnet *ifp) 1053{ 1054 drv_t *d = ifp->if_softc; 1055 1056 cx_watchdog (d); 1057} 1058 1059static void cx_tlf (struct sppp *sp) 1060{ 1061 drv_t *d = SP2IFP(sp)->if_softc; 1062 1063 CX_DEBUG (d, ("cx_tlf\n")); 1064/* cx_set_dtr (d->chan, 0);*/ 1065/* cx_set_rts (d->chan, 0);*/ 1066 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1067 sp->pp_down (sp); 1068} 1069 1070static void cx_tls (struct sppp *sp) 1071{ 1072 drv_t *d = SP2IFP(sp)->if_softc; 1073 1074 CX_DEBUG (d, ("cx_tls\n")); 1075 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1076 sp->pp_up (sp); 1077} 1078 1079/* 1080 * Initialization of interface. 1081 * It seems to be never called by upper level. 1082 */ 1083static void cx_initialize (void *softc) 1084{ 1085 drv_t *d = softc; 1086 1087 CX_DEBUG (d, ("cx_initialize\n")); 1088} 1089 1090/* 1091 * Process an ioctl request. 1092 */ 1093static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data) 1094{ 1095 drv_t *d = ifp->if_softc; 1096 bdrv_t *bd = d->board->sys; 1097 int error, s, was_up, should_be_up; 1098 1099 /* No socket ioctls while the channel is in async mode. */ 1100 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC) 1101 return EBUSY; 1102 1103 /* Socket ioctls on slave subchannels are not allowed. */ 1104 was_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1105 error = sppp_ioctl (ifp, cmd, data); 1106 if (error) 1107 return error; 1108 1109 if (! (ifp->if_flags & IFF_DEBUG)) 1110 d->chan->debug = 0; 1111 else if (! d->chan->debug) 1112 d->chan->debug = 1; 1113 1114 switch (cmd) { 1115 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0; 1116 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0; 1117 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0; 1118 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break; 1119 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break; 1120 } 1121 1122 /* We get here only in case of SIFFLAGS or SIFADDR. */ 1123 s = splhigh (); 1124 CX_LOCK (bd); 1125 should_be_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1126 if (!was_up && should_be_up) { 1127 /* Interface goes up -- start it. */ 1128 cx_up (d); 1129 cx_start (d); 1130 } else if (was_up && !should_be_up) { 1131 /* Interface is going down -- stop it. */ 1132 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/ 1133 cx_down (d); 1134 } 1135 CX_UNLOCK (bd); 1136 splx (s); 1137 return 0; 1138} 1139#endif /*NETGRAPH*/ 1140 1141/* 1142 * Stop the interface. Called on splimp(). 1143 */ 1144static void cx_down (drv_t *d) 1145{ 1146 int s = splhigh (); 1147 CX_DEBUG (d, ("cx_down\n")); 1148 cx_set_dtr (d->chan, 0); 1149 cx_set_rts (d->chan, 0); 1150 d->running = 0; 1151 splx (s); 1152} 1153 1154/* 1155 * Start the interface. Called on splimp(). 1156 */ 1157static void cx_up (drv_t *d) 1158{ 1159 int s = splhigh (); 1160 CX_DEBUG (d, ("cx_up\n")); 1161 cx_set_dtr (d->chan, 1); 1162 cx_set_rts (d->chan, 1); 1163 d->running = 1; 1164 splx (s); 1165} 1166 1167/* 1168 * Start output on the (slave) interface. Get another datagram to send 1169 * off of the interface queue, and copy it to the interface 1170 * before starting the output. 1171 */ 1172static void cx_send (drv_t *d) 1173{ 1174 struct mbuf *m; 1175 u_short len; 1176 1177 CX_DEBUG2 (d, ("cx_send\n")); 1178 1179 /* No output if the interface is down. */ 1180 if (! d->running) 1181 return; 1182 1183 /* No output if the modem is off. */ 1184 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan)) 1185 return; 1186 1187 if (cx_buf_free (d->chan)) { 1188 /* Get the packet to send. */ 1189#ifdef NETGRAPH 1190 IF_DEQUEUE (&d->hi_queue, m); 1191 if (! m) 1192 IF_DEQUEUE (&d->lo_queue, m); 1193#else 1194 m = sppp_dequeue (d->ifp); 1195#endif 1196 if (! m) 1197 return; 1198#ifndef NETGRAPH 1199 if (d->ifp->if_bpf) 1200 BPF_MTAP (d->ifp, m); 1201#endif 1202 len = m_length (m, NULL); 1203 if (! m->m_next) 1204 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t), 1205 len, 0); 1206 else { 1207 u_char buf [DMABUFSZ]; 1208 m_copydata (m, 0, len, buf); 1209 cx_send_packet (d->chan, buf, len, 0); 1210 } 1211 m_freem (m); 1212 1213 /* Set up transmit timeout, 10 seconds. */ 1214#ifdef NETGRAPH 1215 d->timeout = 10; 1216#else 1217 d->ifp->if_timer = 10; 1218#endif 1219 } 1220#ifndef NETGRAPH 1221 d->ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1222#endif 1223} 1224 1225/* 1226 * Start output on the interface. 1227 * Always called on splimp(). 1228 */ 1229static void cx_start (drv_t *d) 1230{ 1231 int s = splhigh (); 1232 if (d->running) { 1233 if (! d->chan->dtr) 1234 cx_set_dtr (d->chan, 1); 1235 if (! d->chan->rts) 1236 cx_set_rts (d->chan, 1); 1237 cx_send (d); 1238 } 1239 splx (s); 1240} 1241 1242/* 1243 * Handle transmit timeouts. 1244 * Recover after lost transmit interrupts. 1245 * Always called on splimp(). 1246 */ 1247static void cx_watchdog (drv_t *d) 1248{ 1249 bdrv_t *bd = d->board->sys; 1250 1251 int s = splhigh (); 1252 CX_LOCK (bd); 1253 CX_DEBUG (d, ("device timeout\n")); 1254 if (d->running) { 1255 cx_setup_chan (d->chan); 1256 cx_start_chan (d->chan, 0, 0); 1257 cx_set_dtr (d->chan, 1); 1258 cx_set_rts (d->chan, 1); 1259 cx_start (d); 1260 } 1261 CX_UNLOCK (bd); 1262 splx (s); 1263} 1264 1265/* 1266 * Transmit callback function. 1267 */ 1268static void cx_transmit (cx_chan_t *c, void *attachment, int len) 1269{ 1270 drv_t *d = c->sys; 1271 1272 if (!d) 1273 return; 1274 1275 if (c->mode == M_ASYNC && d->tty) { 1276 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH); 1277 d->atimeout = 0; 1278 if (d->tty->t_dev) { 1279 d->intr_action |= CX_WRITE; 1280 MY_SOFT_INTR = 1; 1281 swi_sched (cx_fast_ih, 0); 1282 } 1283 return; 1284 } 1285#ifdef NETGRAPH 1286 d->timeout = 0; 1287#else 1288 ++d->ifp->if_opackets; 1289 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1290 d->ifp->if_timer = 0; 1291#endif 1292 cx_start (d); 1293} 1294 1295/* 1296 * Process the received packet. 1297 */ 1298static void cx_receive (cx_chan_t *c, char *data, int len) 1299{ 1300 drv_t *d = c->sys; 1301 struct mbuf *m; 1302 char *cc = data; 1303#ifdef NETGRAPH 1304 int error; 1305#endif 1306 1307 if (!d) 1308 return; 1309 1310 if (c->mode == M_ASYNC && d->tty) { 1311 if (d->tty->t_state & TS_ISOPEN) { 1312 async_q *q = &d->aqueue; 1313 int size = BF_SZ - 1 - AQ_GSZ (q); 1314 1315 if (len <= 0 && !size) 1316 return; 1317 1318 if (len > size) { 1319 c->ierrs++; 1320 cx_error (c, CX_OVERRUN); 1321 len = size - 1; 1322 } 1323 1324 while (len--) { 1325 AQ_PUSH (q, *(unsigned char *)cc); 1326 cc++; 1327 } 1328 1329 d->intr_action |= CX_READ; 1330 MY_SOFT_INTR = 1; 1331 swi_sched (cx_fast_ih, 0); 1332 } 1333 return; 1334 } 1335 if (! d->running) 1336 return; 1337 1338 m = makembuf (data, len); 1339 if (! m) { 1340 CX_DEBUG (d, ("no memory for packet\n")); 1341#ifndef NETGRAPH 1342 ++d->ifp->if_iqdrops; 1343#endif 1344 return; 1345 } 1346 if (c->debug > 1) 1347 printmbuf (m); 1348#ifdef NETGRAPH 1349 m->m_pkthdr.rcvif = 0; 1350 NG_SEND_DATA_ONLY (error, d->hook, m); 1351#else 1352 ++d->ifp->if_ipackets; 1353 m->m_pkthdr.rcvif = d->ifp; 1354 /* Check if there's a BPF listener on this interface. 1355 * If so, hand off the raw packet to bpf. */ 1356 if (d->ifp->if_bpf) 1357 BPF_TAP (d->ifp, data, len); 1358 IF_ENQUEUE (&d->queue, m); 1359#endif 1360} 1361 1362#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\ 1363 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\ 1364 && (!(tp->t_iflag & PARMRK)\ 1365 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\ 1366 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\ 1367 && linesw[tp->t_line]->l_rint == ttyinput) 1368 1369/* 1370 * Error callback function. 1371 */ 1372static void cx_error (cx_chan_t *c, int data) 1373{ 1374 drv_t *d = c->sys; 1375 async_q *q; 1376 1377 if (!d) 1378 return; 1379 1380 q = &(d->aqueue); 1381 1382 switch (data) { 1383 case CX_FRAME: 1384 CX_DEBUG (d, ("frame error\n")); 1385 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1386 && (AQ_GSZ (q) < BF_SZ - 1) 1387 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1388 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1389 AQ_PUSH (q, TTY_FE); 1390 d->intr_action |= CX_READ; 1391 MY_SOFT_INTR = 1; 1392 swi_sched (cx_fast_ih, 0); 1393 } 1394#ifndef NETGRAPH 1395 else 1396 ++d->ifp->if_ierrors; 1397#endif 1398 break; 1399 case CX_CRC: 1400 CX_DEBUG (d, ("crc error\n")); 1401 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1402 && (AQ_GSZ (q) < BF_SZ - 1) 1403 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1404 || !(d->tty->t_iflag & INPCK) 1405 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1406 AQ_PUSH (q, TTY_PE); 1407 d->intr_action |= CX_READ; 1408 MY_SOFT_INTR = 1; 1409 swi_sched (cx_fast_ih, 0); 1410 } 1411#ifndef NETGRAPH 1412 else 1413 ++d->ifp->if_ierrors; 1414#endif 1415 break; 1416 case CX_OVERRUN: 1417 CX_DEBUG (d, ("overrun error\n")); 1418#ifdef TTY_OE 1419 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1420 && (AQ_GSZ (q) < BF_SZ - 1) 1421 && (!CONDITION((&d->tty->t_termios), (d->tty)))) { 1422 AQ_PUSH (q, TTY_OE); 1423 d->intr_action |= CX_READ; 1424 MY_SOFT_INTR = 1; 1425 swi_sched (cx_fast_ih, 0); 1426 } 1427#endif 1428#ifndef NETGRAPH 1429 else { 1430 ++d->ifp->if_collisions; 1431 ++d->ifp->if_ierrors; 1432 } 1433#endif 1434 break; 1435 case CX_OVERFLOW: 1436 CX_DEBUG (d, ("overflow error\n")); 1437#ifndef NETGRAPH 1438 if (c->mode != M_ASYNC) 1439 ++d->ifp->if_ierrors; 1440#endif 1441 break; 1442 case CX_UNDERRUN: 1443 CX_DEBUG (d, ("underrun error\n")); 1444 if (c->mode != M_ASYNC) { 1445#ifdef NETGRAPH 1446 d->timeout = 0; 1447#else 1448 ++d->ifp->if_oerrors; 1449 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1450 d->ifp->if_timer = 0; 1451 cx_start (d); 1452#endif 1453 } 1454 break; 1455 case CX_BREAK: 1456 CX_DEBUG (d, ("break error\n")); 1457 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1458 && (AQ_GSZ (q) < BF_SZ - 1) 1459 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1460 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) { 1461 AQ_PUSH (q, TTY_BI); 1462 d->intr_action |= CX_READ; 1463 MY_SOFT_INTR = 1; 1464 swi_sched (cx_fast_ih, 0); 1465 } 1466#ifndef NETGRAPH 1467 else 1468 ++d->ifp->if_ierrors; 1469#endif 1470 break; 1471 default: 1472 CX_DEBUG (d, ("error #%d\n", data)); 1473 } 1474} 1475 1476static int cx_topen (struct tty *tp, struct cdev *dev) 1477{ 1478 bdrv_t *bd; 1479 drv_t *d; 1480 1481 d = tp->t_sc; 1482 CX_DEBUG2 (d, ("cx_open (serial)\n")); 1483 1484 bd = d->board->sys; 1485 1486 if (d->chan->mode != M_ASYNC) 1487 return (EBUSY); 1488 1489 d->open_dev |= 0x2; 1490 CX_LOCK (bd); 1491 cx_start_chan (d->chan, 0, 0); 1492 cx_set_dtr (d->chan, 1); 1493 cx_set_rts (d->chan, 1); 1494 d->cd = cx_get_cd (d->chan); 1495 CX_UNLOCK (bd); 1496 1497 CX_DEBUG2 (d, ("cx_open done\n")); 1498 1499 return 0; 1500} 1501 1502static void cx_tclose (struct tty *tp) 1503{ 1504 drv_t *d; 1505 bdrv_t *bd; 1506 1507 d = tp->t_sc; 1508 CX_DEBUG2 (d, ("cx_close\n")); 1509 bd = d->board->sys; 1510 CX_LOCK (bd); 1511 /* Disable receiver. 1512 * Transmitter continues sending the queued data. */ 1513 cx_enable_receive (d->chan, 0); 1514 CX_UNLOCK (bd); 1515 d->open_dev &= ~0x2; 1516} 1517 1518static int cx_tmodem (struct tty *tp, int sigon, int sigoff) 1519{ 1520 drv_t *d; 1521 bdrv_t *bd; 1522 1523 d = tp->t_sc; 1524 bd = d->board->sys; 1525 1526 CX_LOCK (bd); 1527 if (!sigon && !sigoff) { 1528 if (cx_get_dsr (d->chan)) sigon |= SER_DSR; 1529 if (cx_get_cd (d->chan)) sigon |= SER_DCD; 1530 if (cx_get_cts (d->chan)) sigon |= SER_CTS; 1531 if (d->chan->dtr) sigon |= SER_DTR; 1532 if (d->chan->rts) sigon |= SER_RTS; 1533 CX_UNLOCK (bd); 1534 return sigon; 1535 } 1536 1537 if (sigon & SER_DTR) 1538 cx_set_dtr (d->chan, 1); 1539 if (sigoff & SER_DTR) 1540 cx_set_dtr (d->chan, 0); 1541 if (sigon & SER_RTS) 1542 cx_set_rts (d->chan, 1); 1543 if (sigoff & SER_RTS) 1544 cx_set_rts (d->chan, 0); 1545 CX_UNLOCK (bd); 1546 1547 return (0); 1548} 1549 1550static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td) 1551{ 1552 int unit; 1553 drv_t *d; 1554 1555 d = dev->si_drv1; 1556 unit = d->chan->num; 1557 1558 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n", 1559 unit, flag, mode)); 1560 1561 d->open_dev |= 0x1; 1562 1563 CX_DEBUG2 (d, ("cx_open done\n")); 1564 1565 return 0; 1566} 1567 1568static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td) 1569{ 1570 drv_t *d; 1571 1572 d = dev->si_drv1; 1573 CX_DEBUG2 (d, ("cx_close\n")); 1574 d->open_dev &= ~0x1; 1575 return 0; 1576} 1577 1578static int cx_modem_status (drv_t *d) 1579{ 1580 bdrv_t *bd = d->board->sys; 1581 int status = 0, s = splhigh (); 1582 CX_LOCK (bd); 1583 /* Already opened by someone or network interface is up? */ 1584 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1585 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running)) 1586 status = TIOCM_LE; /* always enabled while open */ 1587 1588 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR; 1589 if (cx_get_cd (d->chan)) status |= TIOCM_CD; 1590 if (cx_get_cts (d->chan)) status |= TIOCM_CTS; 1591 if (d->chan->dtr) status |= TIOCM_DTR; 1592 if (d->chan->rts) status |= TIOCM_RTS; 1593 CX_UNLOCK (bd); 1594 splx (s); 1595 return status; 1596} 1597 1598static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1599{ 1600 drv_t *d; 1601 bdrv_t *bd; 1602 cx_chan_t *c; 1603 struct serial_statistics *st; 1604 int error, s; 1605 char mask[16]; 1606 1607 d = dev->si_drv1; 1608 c = d->chan; 1609 1610 bd = d->board->sys; 1611 1612 switch (cmd) { 1613 case SERIAL_GETREGISTERED: 1614 CX_DEBUG2 (d, ("ioctl: getregistered\n")); 1615 bzero (mask, sizeof(mask)); 1616 for (s=0; s<NCX*NCHAN; ++s) 1617 if (channel [s]) 1618 mask [s/8] |= 1 << (s & 7); 1619 bcopy (mask, data, sizeof (mask)); 1620 return 0; 1621 1622 case SERIAL_GETPORT: 1623 CX_DEBUG2 (d, ("ioctl: getport\n")); 1624 s = splhigh (); 1625 CX_LOCK (bd); 1626 *(int *)data = cx_get_port (c); 1627 CX_UNLOCK (bd); 1628 splx (s); 1629 if (*(int *)data<0) 1630 return (EINVAL); 1631 else 1632 return 0; 1633 1634 case SERIAL_SETPORT: 1635 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1636 /* Only for superuser! */ 1637 error = suser (td); 1638 if (error) 1639 return error; 1640 1641 s = splhigh (); 1642 CX_LOCK (bd); 1643 cx_set_port (c, *(int *)data); 1644 CX_UNLOCK (bd); 1645 splx (s); 1646 return 0; 1647 1648#ifndef NETGRAPH 1649 case SERIAL_GETPROTO: 1650 CX_DEBUG2 (d, ("ioctl: getproto\n")); 1651 s = splhigh (); 1652 CX_LOCK (bd); 1653 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" : 1654 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" : 1655 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp"); 1656 CX_UNLOCK (bd); 1657 splx (s); 1658 return 0; 1659 1660 case SERIAL_SETPROTO: 1661 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1662 /* Only for superuser! */ 1663 error = suser (td); 1664 if (error) 1665 return error; 1666 if (c->mode == M_ASYNC) 1667 return EBUSY; 1668 if (d->ifp->if_drv_flags & IFF_DRV_RUNNING) 1669 return EBUSY; 1670 if (! strcmp ("cisco", (char*)data)) { 1671 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR); 1672 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1673 d->ifp->if_flags |= PP_CISCO; 1674 } else if (! strcmp ("fr", (char*)data)) { 1675 d->ifp->if_flags &= ~(PP_CISCO); 1676 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE; 1677 } else if (! strcmp ("ppp", (char*)data)) { 1678 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE); 1679 d->ifp->if_flags &= ~(PP_CISCO); 1680 } else 1681 return EINVAL; 1682 return 0; 1683 1684 case SERIAL_GETKEEPALIVE: 1685 CX_DEBUG2 (d, ("ioctl: getkeepalive\n")); 1686 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1687 (d->ifp->if_flags & PP_CISCO) || 1688 (c->mode == M_ASYNC)) 1689 return EINVAL; 1690 s = splhigh (); 1691 CX_LOCK (bd); 1692 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0; 1693 CX_UNLOCK (bd); 1694 splx (s); 1695 return 0; 1696 1697 case SERIAL_SETKEEPALIVE: 1698 CX_DEBUG2 (d, ("ioctl: setkeepalive\n")); 1699 /* Only for superuser! */ 1700 error = suser (td); 1701 if (error) 1702 return error; 1703 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1704 (d->ifp->if_flags & PP_CISCO)) 1705 return EINVAL; 1706 s = splhigh (); 1707 CX_LOCK (bd); 1708 if (*(int*)data) 1709 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1710 else 1711 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE; 1712 CX_UNLOCK (bd); 1713 splx (s); 1714 return 0; 1715#endif /*NETGRAPH*/ 1716 1717 case SERIAL_GETMODE: 1718 CX_DEBUG2 (d, ("ioctl: getmode\n")); 1719 s = splhigh (); 1720 CX_LOCK (bd); 1721 *(int*)data = (c->mode == M_ASYNC) ? 1722 SERIAL_ASYNC : SERIAL_HDLC; 1723 CX_UNLOCK (bd); 1724 splx (s); 1725 return 0; 1726 1727 case SERIAL_SETMODE: 1728 CX_DEBUG2 (d, ("ioctl: setmode\n")); 1729 /* Only for superuser! */ 1730 error = suser (td); 1731 if (error) 1732 return error; 1733 1734 /* Somebody is waiting for carrier? */ 1735 if (d->lock) 1736 return EBUSY; 1737 /* /dev/ttyXX is already opened by someone? */ 1738 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1739 (d->open_dev|0x2)) 1740 return EBUSY; 1741 /* Network interface is up? 1742 * Cannot change to async mode. */ 1743 if (c->mode != M_ASYNC && d->running && 1744 (*(int*)data == SERIAL_ASYNC)) 1745 return EBUSY; 1746 1747 s = splhigh (); 1748 CX_LOCK (bd); 1749 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) { 1750 cx_set_mode (c, M_ASYNC); 1751 cx_enable_receive (c, 0); 1752 cx_enable_transmit (c, 0); 1753 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) { 1754 cx_set_mode (c, M_HDLC); 1755 cx_enable_receive (c, 1); 1756 cx_enable_transmit (c, 1); 1757 } 1758 CX_UNLOCK (bd); 1759 splx (s); 1760 return 0; 1761 1762 case SERIAL_GETSTAT: 1763 CX_DEBUG2 (d, ("ioctl: getestat\n")); 1764 st = (struct serial_statistics*) data; 1765 s = splhigh (); 1766 CX_LOCK (bd); 1767 st->rintr = c->rintr; 1768 st->tintr = c->tintr; 1769 st->mintr = c->mintr; 1770 st->ibytes = c->ibytes; 1771 st->ipkts = c->ipkts; 1772 st->ierrs = c->ierrs; 1773 st->obytes = c->obytes; 1774 st->opkts = c->opkts; 1775 st->oerrs = c->oerrs; 1776 CX_UNLOCK (bd); 1777 splx (s); 1778 return 0; 1779 1780 case SERIAL_CLRSTAT: 1781 CX_DEBUG2 (d, ("ioctl: clrstat\n")); 1782 /* Only for superuser! */ 1783 error = suser (td); 1784 if (error) 1785 return error; 1786 s = splhigh (); 1787 CX_LOCK (bd); 1788 c->rintr = 0; 1789 c->tintr = 0; 1790 c->mintr = 0; 1791 c->ibytes = 0; 1792 c->ipkts = 0; 1793 c->ierrs = 0; 1794 c->obytes = 0; 1795 c->opkts = 0; 1796 c->oerrs = 0; 1797 CX_UNLOCK (bd); 1798 splx (s); 1799 return 0; 1800 1801 case SERIAL_GETBAUD: 1802 CX_DEBUG2 (d, ("ioctl: getbaud\n")); 1803 if (c->mode == M_ASYNC) 1804 return EINVAL; 1805 s = splhigh (); 1806 CX_LOCK (bd); 1807 *(long*)data = cx_get_baud(c); 1808 CX_UNLOCK (bd); 1809 splx (s); 1810 return 0; 1811 1812 case SERIAL_SETBAUD: 1813 CX_DEBUG2 (d, ("ioctl: setbaud\n")); 1814 /* Only for superuser! */ 1815 error = suser (td); 1816 if (error) 1817 return error; 1818 if (c->mode == M_ASYNC) 1819 return EINVAL; 1820 s = splhigh (); 1821 CX_LOCK (bd); 1822 cx_set_baud (c, *(long*)data); 1823 CX_UNLOCK (bd); 1824 splx (s); 1825 return 0; 1826 1827 case SERIAL_GETLOOP: 1828 CX_DEBUG2 (d, ("ioctl: getloop\n")); 1829 if (c->mode == M_ASYNC) 1830 return EINVAL; 1831 s = splhigh (); 1832 CX_LOCK (bd); 1833 *(int*)data = cx_get_loop (c); 1834 CX_UNLOCK (bd); 1835 splx (s); 1836 return 0; 1837 1838 case SERIAL_SETLOOP: 1839 CX_DEBUG2 (d, ("ioctl: setloop\n")); 1840 /* Only for superuser! */ 1841 error = suser (td); 1842 if (error) 1843 return error; 1844 if (c->mode == M_ASYNC) 1845 return EINVAL; 1846 s = splhigh (); 1847 CX_LOCK (bd); 1848 cx_set_loop (c, *(int*)data); 1849 CX_UNLOCK (bd); 1850 splx (s); 1851 return 0; 1852 1853 case SERIAL_GETDPLL: 1854 CX_DEBUG2 (d, ("ioctl: getdpll\n")); 1855 if (c->mode == M_ASYNC) 1856 return EINVAL; 1857 s = splhigh (); 1858 CX_LOCK (bd); 1859 *(int*)data = cx_get_dpll (c); 1860 CX_UNLOCK (bd); 1861 splx (s); 1862 return 0; 1863 1864 case SERIAL_SETDPLL: 1865 CX_DEBUG2 (d, ("ioctl: setdpll\n")); 1866 /* Only for superuser! */ 1867 error = suser (td); 1868 if (error) 1869 return error; 1870 if (c->mode == M_ASYNC) 1871 return EINVAL; 1872 s = splhigh (); 1873 CX_LOCK (bd); 1874 cx_set_dpll (c, *(int*)data); 1875 CX_UNLOCK (bd); 1876 splx (s); 1877 return 0; 1878 1879 case SERIAL_GETNRZI: 1880 CX_DEBUG2 (d, ("ioctl: getnrzi\n")); 1881 if (c->mode == M_ASYNC) 1882 return EINVAL; 1883 s = splhigh (); 1884 CX_LOCK (bd); 1885 *(int*)data = cx_get_nrzi (c); 1886 CX_UNLOCK (bd); 1887 splx (s); 1888 return 0; 1889 1890 case SERIAL_SETNRZI: 1891 CX_DEBUG2 (d, ("ioctl: setnrzi\n")); 1892 /* Only for superuser! */ 1893 error = suser (td); 1894 if (error) 1895 return error; 1896 if (c->mode == M_ASYNC) 1897 return EINVAL; 1898 s = splhigh (); 1899 CX_LOCK (bd); 1900 cx_set_nrzi (c, *(int*)data); 1901 CX_UNLOCK (bd); 1902 splx (s); 1903 return 0; 1904 1905 case SERIAL_GETDEBUG: 1906 CX_DEBUG2 (d, ("ioctl: getdebug\n")); 1907 s = splhigh (); 1908 CX_LOCK (bd); 1909 *(int*)data = c->debug; 1910 CX_UNLOCK (bd); 1911 splx (s); 1912 return 0; 1913 1914 case SERIAL_SETDEBUG: 1915 CX_DEBUG2 (d, ("ioctl: setdebug\n")); 1916 /* Only for superuser! */ 1917 error = suser (td); 1918 if (error) 1919 return error; 1920 s = splhigh (); 1921 CX_LOCK (bd); 1922 c->debug = *(int*)data; 1923 CX_UNLOCK (bd); 1924 splx (s); 1925#ifndef NETGRAPH 1926 if (d->chan->debug) 1927 d->ifp->if_flags |= IFF_DEBUG; 1928 else 1929 d->ifp->if_flags &= (~IFF_DEBUG); 1930#endif 1931 return 0; 1932 } 1933 1934 switch (cmd) { 1935 case TIOCSDTR: /* Set DTR */ 1936 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n")); 1937 s = splhigh (); 1938 CX_LOCK (bd); 1939 cx_set_dtr (c, 1); 1940 CX_UNLOCK (bd); 1941 splx (s); 1942 return 0; 1943 1944 case TIOCCDTR: /* Clear DTR */ 1945 CX_DEBUG2 (d, ("ioctl: tioccdtr\n")); 1946 s = splhigh (); 1947 CX_LOCK (bd); 1948 cx_set_dtr (c, 0); 1949 CX_UNLOCK (bd); 1950 splx (s); 1951 return 0; 1952 1953 case TIOCMSET: /* Set DTR/RTS */ 1954 CX_DEBUG2 (d, ("ioctl: tiocmset\n")); 1955 s = splhigh (); 1956 CX_LOCK (bd); 1957 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0); 1958 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0); 1959 CX_UNLOCK (bd); 1960 splx (s); 1961 return 0; 1962 1963 case TIOCMBIS: /* Add DTR/RTS */ 1964 CX_DEBUG2 (d, ("ioctl: tiocmbis\n")); 1965 s = splhigh (); 1966 CX_LOCK (bd); 1967 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1); 1968 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1); 1969 CX_UNLOCK (bd); 1970 splx (s); 1971 return 0; 1972 1973 case TIOCMBIC: /* Clear DTR/RTS */ 1974 CX_DEBUG2 (d, ("ioctl: tiocmbic\n")); 1975 s = splhigh (); 1976 CX_LOCK (bd); 1977 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0); 1978 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0); 1979 CX_UNLOCK (bd); 1980 splx (s); 1981 return 0; 1982 1983 case TIOCMGET: /* Get modem status */ 1984 CX_DEBUG2 (d, ("ioctl: tiocmget\n")); 1985 *(int*)data = cx_modem_status (d); 1986 return 0; 1987 1988 } 1989 1990 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd)); 1991 return ENOTTY; 1992} 1993 1994void cx_softintr (void *unused) 1995{ 1996 drv_t *d; 1997 bdrv_t *bd; 1998 async_q *q; 1999 int i, s, ic, k; 2000 while (MY_SOFT_INTR) { 2001 MY_SOFT_INTR = 0; 2002 for (i=0; i<NCX*NCHAN; ++i) { 2003 d = channel [i]; 2004 if (!d || !d->chan || d->chan->type == T_NONE 2005 || d->chan->mode != M_ASYNC || !d->tty 2006 || !d->tty->t_dev) 2007 continue; 2008 bd = d->board->sys; 2009 s = splhigh (); 2010 CX_LOCK (bd); 2011 if (d->intr_action & CX_READ) { 2012 q = &(d->aqueue); 2013 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) { 2014 k = AQ_GSZ(q); 2015 if (d->tty->t_rawq.c_cc + k > 2016 d->tty->t_ihiwat 2017 && (d->tty->t_cflag & CRTS_IFLOW 2018 || d->tty->t_iflag & IXOFF) 2019 && !(d->tty->t_state & TS_TBLOCK)) 2020 ttyblock(d->tty); 2021 d->tty->t_rawcc += k; 2022 while (k>0) { 2023 k--; 2024 AQ_POP (q, ic); 2025 CX_UNLOCK (bd); 2026 splx (s); 2027 putc (ic, &d->tty->t_rawq); 2028 s = splhigh (); 2029 CX_LOCK (bd); 2030 } 2031 ttwakeup(d->tty); 2032 if (d->tty->t_state & TS_TTSTOP 2033 && (d->tty->t_iflag & IXANY 2034 || d->tty->t_cc[VSTART] == 2035 d->tty->t_cc[VSTOP])) { 2036 d->tty->t_state &= ~TS_TTSTOP; 2037 d->tty->t_lflag &= ~FLUSHO; 2038 d->intr_action |= CX_WRITE; 2039 } 2040 } else { 2041 while (q->end != q->beg) { 2042 AQ_POP (q, ic); 2043 CX_UNLOCK (bd); 2044 splx (s); 2045 ttyld_rint (d->tty, ic); 2046 s = splhigh (); 2047 CX_LOCK (bd); 2048 } 2049 } 2050 d->intr_action &= ~CX_READ; 2051 } 2052 splx (s); 2053 CX_UNLOCK (bd); 2054 2055 s = splhigh (); 2056 CX_LOCK (bd); 2057 if (d->intr_action & CX_WRITE) { 2058 if (d->tty->t_line) 2059 ttyld_start (d->tty); 2060 else 2061 cx_oproc (d->tty); 2062 d->intr_action &= ~CX_WRITE; 2063 } 2064 CX_UNLOCK (bd); 2065 splx (s); 2066 2067 } 2068 } 2069} 2070 2071/* 2072 * Fill transmitter buffer with data. 2073 */ 2074static void cx_oproc (struct tty *tp) 2075{ 2076 int s, k; 2077 drv_t *d; 2078 bdrv_t *bd; 2079 static u_char buf[DMABUFSZ]; 2080 u_char *p; 2081 u_short len = 0, sublen = 0; 2082 2083 d = tp->t_sc; 2084 bd = d->board->sys; 2085 2086 CX_DEBUG2 (d, ("cx_oproc\n")); 2087 2088 s = splhigh (); 2089 CX_LOCK (bd); 2090 2091 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts) 2092 cx_set_rts (d->chan, 0); 2093 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts) 2094 cx_set_rts (d->chan, 1); 2095 2096 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) { 2097 /* Start transmitter. */ 2098 cx_enable_transmit (d->chan, 1); 2099 2100 /* Is it busy? */ 2101 if (! cx_buf_free (d->chan)) { 2102 tp->t_state |= TS_BUSY; 2103 CX_UNLOCK (bd); 2104 splx (s); 2105 return; 2106 } 2107 if (tp->t_iflag & IXOFF) { 2108 p = (buf + (DMABUFSZ/2)); 2109 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2110 k = sublen; 2111 while (k--) { 2112 /* Send XON/XOFF out of band. */ 2113 if (*p == tp->t_cc[VSTOP]) { 2114 cx_xflow_ctl (d->chan, 0); 2115 p++; 2116 continue; 2117 } 2118 if (*p == tp->t_cc[VSTART]) { 2119 cx_xflow_ctl (d->chan, 1); 2120 p++; 2121 continue; 2122 } 2123 buf[len] = *p; 2124 len++; 2125 p++; 2126 } 2127 } else { 2128 p = buf; 2129 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2130 } 2131 if (len) { 2132 cx_send_packet (d->chan, buf, len, 0); 2133 tp->t_state |= TS_BUSY; 2134 d->atimeout = 10; 2135 CX_DEBUG2 (d, ("out %d bytes\n", len)); 2136 } 2137 } 2138 ttwwakeup (tp); 2139 CX_UNLOCK (bd); 2140 splx (s); 2141} 2142 2143static int cx_param (struct tty *tp, struct termios *t) 2144{ 2145 drv_t *d; 2146 bdrv_t *bd; 2147 int s, bits, parity; 2148 2149 d = tp->t_sc; 2150 bd = d->board->sys; 2151 2152 s = splhigh (); 2153 CX_LOCK (bd); 2154 if (t->c_ospeed == 0) { 2155 /* Clear DTR and RTS. */ 2156 cx_set_dtr (d->chan, 0); 2157 CX_UNLOCK (bd); 2158 splx (s); 2159 CX_DEBUG2 (d, ("cx_param (hangup)\n")); 2160 return 0; 2161 } 2162 CX_DEBUG2 (d, ("cx_param\n")); 2163 2164 /* Check requested parameters. */ 2165 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) { 2166 CX_UNLOCK (bd); 2167 splx (s); 2168 return EINVAL; 2169 } 2170 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) { 2171 CX_UNLOCK (bd); 2172 splx (s); 2173 return EINVAL; 2174 } 2175 2176 /* And copy them to tty and channel structures. */ 2177 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed; 2178 tp->t_cflag = t->c_cflag; 2179 2180 /* Set character length and parity mode. */ 2181 switch (t->c_cflag & CSIZE) { 2182 default: 2183 case CS8: bits = 8; break; 2184 case CS7: bits = 7; break; 2185 case CS6: bits = 6; break; 2186 case CS5: bits = 5; break; 2187 } 2188 2189 parity = ((t->c_cflag & PARENB) ? 1 : 0) * 2190 (1 + ((t->c_cflag & PARODD) ? 0 : 1)); 2191 2192 /* Set current channel number. */ 2193 if (! d->chan->dtr) 2194 cx_set_dtr (d->chan, 1); 2195 2196 ttyldoptim (tp); 2197 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB), 2198 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS), 2199 (t->c_iflag & IXON), (t->c_iflag & IXANY), 2200 t->c_cc[VSTART], t->c_cc[VSTOP]); 2201 CX_UNLOCK (bd); 2202 splx (s); 2203 return 0; 2204} 2205 2206/* 2207 * Stop output on a line 2208 */ 2209static void cx_stop (struct tty *tp, int flag) 2210{ 2211 drv_t *d; 2212 bdrv_t *bd; 2213 int s; 2214 2215 d = tp->t_sc; 2216 bd = d->board->sys; 2217 2218 s = splhigh (); 2219 CX_LOCK (bd); 2220 if (tp->t_state & TS_BUSY) { 2221 /* Stop transmitter */ 2222 CX_DEBUG2 (d, ("cx_stop\n")); 2223 cx_transmitter_ctl (d->chan, 0); 2224 } 2225 CX_UNLOCK (bd); 2226 splx (s); 2227} 2228 2229/* 2230 * Process the (delayed) carrier signal setup. 2231 */ 2232static void cx_carrier (void *arg) 2233{ 2234 drv_t *d = arg; 2235 bdrv_t *bd = d->board->sys; 2236 cx_chan_t *c = d->chan; 2237 int s, cd; 2238 2239 s = splhigh (); 2240 CX_LOCK (bd); 2241 cd = cx_get_cd (c); 2242 if (d->cd != cd) { 2243 if (cd) { 2244 CX_DEBUG (d, ("carrier on\n")); 2245 d->cd = 1; 2246 CX_UNLOCK (bd); 2247 splx (s); 2248 if (d->tty) 2249 ttyld_modem(d->tty, 1); 2250 } else { 2251 CX_DEBUG (d, ("carrier loss\n")); 2252 d->cd = 0; 2253 CX_UNLOCK (bd); 2254 splx (s); 2255 if (d->tty) 2256 ttyld_modem(d->tty, 0); 2257 } 2258 } else { 2259 CX_UNLOCK (bd); 2260 splx (s); 2261 } 2262} 2263 2264/* 2265 * Modem signal callback function. 2266 */ 2267static void cx_modem (cx_chan_t *c) 2268{ 2269 drv_t *d = c->sys; 2270 2271 if (!d || c->mode != M_ASYNC) 2272 return; 2273 /* Handle carrier detect/loss. */ 2274 /* Carrier changed - delay processing DCD for a while 2275 * to give both sides some time to initialize. */ 2276 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d); 2277} 2278 2279#ifdef NETGRAPH 2280static int ng_cx_constructor (node_p node) 2281{ 2282 drv_t *d = NG_NODE_PRIVATE (node); 2283 CX_DEBUG (d, ("Constructor\n")); 2284 return EINVAL; 2285} 2286 2287static int ng_cx_newhook (node_p node, hook_p hook, const char *name) 2288{ 2289 int s; 2290 drv_t *d = NG_NODE_PRIVATE (node); 2291 bdrv_t *bd = d->board->sys; 2292 2293 if (d->chan->mode == M_ASYNC) 2294 return EINVAL; 2295 2296 /* Attach debug hook */ 2297 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) { 2298 NG_HOOK_SET_PRIVATE (hook, NULL); 2299 d->debug_hook = hook; 2300 return 0; 2301 } 2302 2303 /* Check for raw hook */ 2304 if (strcmp (name, NG_CX_HOOK_RAW) != 0) 2305 return EINVAL; 2306 2307 NG_HOOK_SET_PRIVATE (hook, d); 2308 d->hook = hook; 2309 s = splhigh (); 2310 CX_LOCK (bd); 2311 cx_up (d); 2312 CX_UNLOCK (bd); 2313 splx (s); 2314 return 0; 2315} 2316 2317static int print_modems (char *s, cx_chan_t *c, int need_header) 2318{ 2319 int status = cx_modem_status (c->sys); 2320 int length = 0; 2321 2322 if (need_header) 2323 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n"); 2324 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n", 2325 status & TIOCM_LE ? "On" : "-", 2326 status & TIOCM_DTR ? "On" : "-", 2327 status & TIOCM_DSR ? "On" : "-", 2328 status & TIOCM_RTS ? "On" : "-", 2329 status & TIOCM_CTS ? "On" : "-", 2330 status & TIOCM_CD ? "On" : "-"); 2331 return length; 2332} 2333 2334static int print_stats (char *s, cx_chan_t *c, int need_header) 2335{ 2336 int length = 0; 2337 2338 if (need_header) 2339 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n"); 2340 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n", 2341 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts, 2342 c->ierrs, c->obytes, c->opkts, c->oerrs); 2343 return length; 2344} 2345 2346static int print_chan (char *s, cx_chan_t *c) 2347{ 2348 drv_t *d = c->sys; 2349 int length = 0; 2350 2351 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num); 2352 if (d->chan->debug) 2353 length += sprintf (s + length, " debug=%d", d->chan->debug); 2354 2355 if (cx_get_baud (c)) 2356 length += sprintf (s + length, " %ld", cx_get_baud (c)); 2357 else 2358 length += sprintf (s + length, " extclock"); 2359 2360 if (c->mode == M_HDLC) { 2361 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off"); 2362 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off"); 2363 } 2364 2365 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n"); 2366 return length; 2367} 2368 2369static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook) 2370{ 2371 drv_t *d = NG_NODE_PRIVATE (node); 2372 struct ng_mesg *msg; 2373 struct ng_mesg *resp = NULL; 2374 int error = 0; 2375 2376 if (!d) 2377 return EINVAL; 2378 2379 CX_DEBUG (d, ("Rcvmsg\n")); 2380 NGI_GET_MSG (item, msg); 2381 switch (msg->header.typecookie) { 2382 default: 2383 error = EINVAL; 2384 break; 2385 2386 case NGM_CX_COOKIE: 2387 printf ("Don't forget to implement\n"); 2388 error = EINVAL; 2389 break; 2390 2391 case NGM_GENERIC_COOKIE: 2392 switch (msg->header.cmd) { 2393 default: 2394 error = EINVAL; 2395 break; 2396 2397 case NGM_TEXT_STATUS: { 2398 char *s; 2399 int l = 0; 2400 int dl = sizeof (struct ng_mesg) + 730; 2401 2402 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT); 2403 if (! resp) { 2404 error = ENOMEM; 2405 break; 2406 } 2407 bzero (resp, dl); 2408 s = (resp)->data; 2409 l += print_chan (s + l, d->chan); 2410 l += print_stats (s + l, d->chan, 1); 2411 l += print_modems (s + l, d->chan, 1); 2412 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRLEN); 2413 } 2414 break; 2415 } 2416 break; 2417 } 2418 NG_RESPOND_MSG (error, node, item, resp); 2419 NG_FREE_MSG (msg); 2420 return error; 2421} 2422 2423static int ng_cx_rcvdata (hook_p hook, item_p item) 2424{ 2425 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook)); 2426 struct mbuf *m; 2427 struct ng_tag_prio *ptag; 2428 bdrv_t *bd; 2429 struct ifqueue *q; 2430 int s; 2431 2432 NGI_GET_M (item, m); 2433 NG_FREE_ITEM (item); 2434 if (! NG_HOOK_PRIVATE (hook) || ! d) { 2435 NG_FREE_M (m); 2436 return ENETDOWN; 2437 } 2438 2439 bd = d->board->sys; 2440 /* Check for high priority data */ 2441 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE, 2442 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) ) 2443 q = &d->hi_queue; 2444 else 2445 q = &d->lo_queue; 2446 2447 s = splhigh (); 2448 CX_LOCK (bd); 2449 IF_LOCK (q); 2450 if (_IF_QFULL (q)) { 2451 _IF_DROP (q); 2452 IF_UNLOCK (q); 2453 CX_UNLOCK (bd); 2454 splx (s); 2455 NG_FREE_M (m); 2456 return ENOBUFS; 2457 } 2458 _IF_ENQUEUE (q, m); 2459 IF_UNLOCK (q); 2460 cx_start (d); 2461 CX_UNLOCK (bd); 2462 splx (s); 2463 return 0; 2464} 2465 2466static int ng_cx_rmnode (node_p node) 2467{ 2468 drv_t *d = NG_NODE_PRIVATE (node); 2469 bdrv_t *bd; 2470 2471 CX_DEBUG (d, ("Rmnode\n")); 2472 if (d && d->running) { 2473 int s = splhigh (); 2474 bd = d->board->sys; 2475 CX_LOCK (bd); 2476 cx_down (d); 2477 CX_UNLOCK (bd); 2478 splx (s); 2479 } 2480#ifdef KLD_MODULE 2481 if (node->nd_flags & NGF_REALLY_DIE) { 2482 NG_NODE_SET_PRIVATE (node, NULL); 2483 NG_NODE_UNREF (node); 2484 } 2485 NG_NODE_REVIVE(node); /* Persistant node */ 2486#endif 2487 return 0; 2488} 2489 2490static void ng_cx_watchdog (void *arg) 2491{ 2492 drv_t *d = arg; 2493 2494 if (d->timeout == 1) 2495 cx_watchdog (d); 2496 if (d->timeout) 2497 d->timeout--; 2498 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2499} 2500 2501static int ng_cx_connect (hook_p hook) 2502{ 2503 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2504 2505 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2506 return 0; 2507} 2508 2509static int ng_cx_disconnect (hook_p hook) 2510{ 2511 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2512 bdrv_t *bd = d->board->sys; 2513 int s; 2514 2515 s = splhigh (); 2516 CX_LOCK (bd); 2517 if (NG_HOOK_PRIVATE (hook)) 2518 cx_down (d); 2519 CX_UNLOCK (bd); 2520 splx (s); 2521 /* If we were wait it than it reasserted now, just stop it. */ 2522 if (!callout_drain (&d->timeout_handle)) 2523 callout_stop (&d->timeout_handle); 2524 return 0; 2525} 2526#endif /*NETGRAPH*/ 2527 2528static int cx_modevent (module_t mod, int type, void *unused) 2529{ 2530 static int load_count = 0; 2531 2532 if (!debug_mpsafenet && cx_mpsafenet) { 2533 printf ("WORNING! Network stack is not MPSAFE. " 2534 "Turning off debug.cx.mpsafenet.\n"); 2535 cx_mpsafenet = 0; 2536 } 2537 if (cx_mpsafenet) 2538 cx_cdevsw.d_flags &= ~D_NEEDGIANT; 2539 2540 switch (type) { 2541 case MOD_LOAD: 2542#ifdef NETGRAPH 2543 if (ng_newtype (&typestruct)) 2544 printf ("Failed to register ng_cx\n"); 2545#endif 2546 ++load_count; 2547 2548 callout_init (&timeout_handle, cx_mpsafenet?CALLOUT_MPSAFE:0); 2549 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 2550 /* Software interrupt. */ 2551 swi_add(&tty_ithd, "cx", cx_softintr, NULL, SWI_TTY, 2552 (cx_mpsafenet?INTR_MPSAFE:0), &cx_fast_ih); 2553 break; 2554 case MOD_UNLOAD: 2555 if (load_count == 1) { 2556 printf ("Removing device entry for Sigma\n"); 2557#ifdef NETGRAPH 2558 ng_rmtype (&typestruct); 2559#endif 2560 } 2561 /* If we were wait it than it reasserted now, just stop it. */ 2562 if (!callout_drain (&timeout_handle)) 2563 callout_stop (&timeout_handle); 2564 ithread_remove_handler (cx_fast_ih); 2565 --load_count; 2566 break; 2567 case MOD_SHUTDOWN: 2568 break; 2569 } 2570 return 0; 2571} 2572 2573#ifdef NETGRAPH 2574static struct ng_type typestruct = { 2575 .version = NG_ABI_VERSION, 2576 .name = NG_CX_NODE_TYPE, 2577 .constructor = ng_cx_constructor, 2578 .rcvmsg = ng_cx_rcvmsg, 2579 .shutdown = ng_cx_rmnode, 2580 .newhook = ng_cx_newhook, 2581 .connect = ng_cx_connect, 2582 .rcvdata = ng_cx_rcvdata, 2583 .disconnect = ng_cx_disconnect, 2584}; 2585#endif /*NETGRAPH*/ 2586 2587#ifdef NETGRAPH 2588MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 2589#else 2590MODULE_DEPEND (isa_cx, sppp, 1, 1, 1); 2591#endif 2592DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL); 2593MODULE_VERSION (cx, 1); 2594