if_cx.c revision 151383
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 151383 2005-10-16 20:22:56Z phk $"); 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, TS_CALLOUT, "x%r%r", b->num, c->num); 902 d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num); 903 d->devt->si_drv1 = d; 904 callout_init (&d->dcd_timeout_handle, 905 cx_mpsafenet ? CALLOUT_MPSAFE : 0); 906 } 907 splx (s); 908 909 return 0; 910} 911 912static int cx_detach (device_t dev) 913{ 914 bdrv_t *bd = device_get_softc (dev); 915 cx_board_t *b = bd->board; 916 cx_chan_t *c; 917 int s; 918 919 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized")); 920 921 s = splhigh (); 922 CX_LOCK (bd); 923 /* Check if the device is busy (open). */ 924 for (c = b->chan; c < b->chan + NCHAN; ++c) { 925 drv_t *d = (drv_t*) c->sys; 926 927 if (!d || d->chan->type == T_NONE) 928 continue; 929 if (d->lock) { 930 CX_UNLOCK (bd); 931 splx (s); 932 return EBUSY; 933 } 934 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 935 (d->open_dev|0x2)) { 936 CX_UNLOCK (bd); 937 splx (s); 938 return EBUSY; 939 } 940 if (d->running) { 941 CX_UNLOCK (bd); 942 splx (s); 943 return EBUSY; 944 } 945 } 946 947 /* Deactivate the timeout routine. And soft interrupt*/ 948 callout_stop (&led_timo[b->num]); 949 950 for (c = b->chan; c < b->chan + NCHAN; ++c) { 951 drv_t *d = c->sys; 952 953 if (!d || d->chan->type == T_NONE) 954 continue; 955 956 callout_stop (&d->dcd_timeout_handle); 957 } 958 CX_UNLOCK (bd); 959 bus_teardown_intr (dev, bd->irq_res, bd->intrhand); 960 bus_deactivate_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 961 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 962 963 bus_deactivate_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 964 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 965 966 bus_deactivate_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->irq_res); 967 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res); 968 969 CX_LOCK (bd); 970 cx_close_board (b); 971 972 /* Detach the interfaces, free buffer memory. */ 973 for (c = b->chan; c < b->chan + NCHAN; ++c) { 974 drv_t *d = (drv_t*) c->sys; 975 976 if (!d || d->chan->type == T_NONE) 977 continue; 978 979 if (d->tty) { 980 ttyfree (d->tty); 981 d->tty = NULL; 982 } 983 984#ifdef NETGRAPH 985 if (d->node) { 986 ng_rmnode_self (d->node); 987 NG_NODE_UNREF (d->node); 988 d->node = NULL; 989 } 990 mtx_destroy (&d->lo_queue.ifq_mtx); 991 mtx_destroy (&d->hi_queue.ifq_mtx); 992#else 993 /* Detach from the packet filter list of interfaces. */ 994 bpfdetach (d->ifp); 995 /* Detach from the sync PPP list. */ 996 sppp_detach (d->ifp); 997 998 if_detach (d->ifp); 999 if_free(d->ifp); 1000 /* XXXRIK: check interconnection with irq handler */ 1001 IF_DRAIN (&d->queue); 1002 mtx_destroy (&d->queue.ifq_mtx); 1003#endif 1004 destroy_dev (d->devt); 1005 } 1006 1007 cx_led_off (b); 1008 CX_UNLOCK (bd); 1009 callout_drain (&led_timo[b->num]); 1010 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1011 drv_t *d = c->sys; 1012 1013 if (!d || d->chan->type == T_NONE) 1014 continue; 1015 1016 callout_drain (&d->dcd_timeout_handle); 1017 } 1018 splx (s); 1019 1020 s = splhigh (); 1021 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1022 drv_t *d = (drv_t*) c->sys; 1023 1024 if (!d || d->chan->type == T_NONE) 1025 continue; 1026 1027 /* Deallocate buffers. */ 1028 cx_bus_dma_mem_free (&d->dmamem); 1029 } 1030 bd->board = 0; 1031 adapter [b->num] = 0; 1032 free (b, M_DEVBUF); 1033 splx (s); 1034 1035 mtx_destroy (&bd->cx_mtx); 1036 1037 return 0; 1038} 1039 1040#ifndef NETGRAPH 1041static void cx_ifstart (struct ifnet *ifp) 1042{ 1043 drv_t *d = ifp->if_softc; 1044 bdrv_t *bd = d->board->sys; 1045 1046 CX_LOCK (bd); 1047 cx_start (d); 1048 CX_UNLOCK (bd); 1049} 1050 1051static void cx_ifwatchdog (struct ifnet *ifp) 1052{ 1053 drv_t *d = ifp->if_softc; 1054 1055 cx_watchdog (d); 1056} 1057 1058static void cx_tlf (struct sppp *sp) 1059{ 1060 drv_t *d = SP2IFP(sp)->if_softc; 1061 1062 CX_DEBUG (d, ("cx_tlf\n")); 1063/* cx_set_dtr (d->chan, 0);*/ 1064/* cx_set_rts (d->chan, 0);*/ 1065 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1066 sp->pp_down (sp); 1067} 1068 1069static void cx_tls (struct sppp *sp) 1070{ 1071 drv_t *d = SP2IFP(sp)->if_softc; 1072 1073 CX_DEBUG (d, ("cx_tls\n")); 1074 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1075 sp->pp_up (sp); 1076} 1077 1078/* 1079 * Initialization of interface. 1080 * It seems to be never called by upper level. 1081 */ 1082static void cx_initialize (void *softc) 1083{ 1084 drv_t *d = softc; 1085 1086 CX_DEBUG (d, ("cx_initialize\n")); 1087} 1088 1089/* 1090 * Process an ioctl request. 1091 */ 1092static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data) 1093{ 1094 drv_t *d = ifp->if_softc; 1095 bdrv_t *bd = d->board->sys; 1096 int error, s, was_up, should_be_up; 1097 1098 /* No socket ioctls while the channel is in async mode. */ 1099 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC) 1100 return EBUSY; 1101 1102 /* Socket ioctls on slave subchannels are not allowed. */ 1103 was_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1104 error = sppp_ioctl (ifp, cmd, data); 1105 if (error) 1106 return error; 1107 1108 if (! (ifp->if_flags & IFF_DEBUG)) 1109 d->chan->debug = 0; 1110 else if (! d->chan->debug) 1111 d->chan->debug = 1; 1112 1113 switch (cmd) { 1114 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0; 1115 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0; 1116 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0; 1117 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break; 1118 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break; 1119 } 1120 1121 /* We get here only in case of SIFFLAGS or SIFADDR. */ 1122 s = splhigh (); 1123 CX_LOCK (bd); 1124 should_be_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1125 if (!was_up && should_be_up) { 1126 /* Interface goes up -- start it. */ 1127 cx_up (d); 1128 cx_start (d); 1129 } else if (was_up && !should_be_up) { 1130 /* Interface is going down -- stop it. */ 1131 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/ 1132 cx_down (d); 1133 } 1134 CX_UNLOCK (bd); 1135 splx (s); 1136 return 0; 1137} 1138#endif /*NETGRAPH*/ 1139 1140/* 1141 * Stop the interface. Called on splimp(). 1142 */ 1143static void cx_down (drv_t *d) 1144{ 1145 int s = splhigh (); 1146 CX_DEBUG (d, ("cx_down\n")); 1147 cx_set_dtr (d->chan, 0); 1148 cx_set_rts (d->chan, 0); 1149 d->running = 0; 1150 splx (s); 1151} 1152 1153/* 1154 * Start the interface. Called on splimp(). 1155 */ 1156static void cx_up (drv_t *d) 1157{ 1158 int s = splhigh (); 1159 CX_DEBUG (d, ("cx_up\n")); 1160 cx_set_dtr (d->chan, 1); 1161 cx_set_rts (d->chan, 1); 1162 d->running = 1; 1163 splx (s); 1164} 1165 1166/* 1167 * Start output on the (slave) interface. Get another datagram to send 1168 * off of the interface queue, and copy it to the interface 1169 * before starting the output. 1170 */ 1171static void cx_send (drv_t *d) 1172{ 1173 struct mbuf *m; 1174 u_short len; 1175 1176 CX_DEBUG2 (d, ("cx_send\n")); 1177 1178 /* No output if the interface is down. */ 1179 if (! d->running) 1180 return; 1181 1182 /* No output if the modem is off. */ 1183 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan)) 1184 return; 1185 1186 if (cx_buf_free (d->chan)) { 1187 /* Get the packet to send. */ 1188#ifdef NETGRAPH 1189 IF_DEQUEUE (&d->hi_queue, m); 1190 if (! m) 1191 IF_DEQUEUE (&d->lo_queue, m); 1192#else 1193 m = sppp_dequeue (d->ifp); 1194#endif 1195 if (! m) 1196 return; 1197#ifndef NETGRAPH 1198 if (d->ifp->if_bpf) 1199 BPF_MTAP (d->ifp, m); 1200#endif 1201 len = m_length (m, NULL); 1202 if (! m->m_next) 1203 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t), 1204 len, 0); 1205 else { 1206 u_char buf [DMABUFSZ]; 1207 m_copydata (m, 0, len, buf); 1208 cx_send_packet (d->chan, buf, len, 0); 1209 } 1210 m_freem (m); 1211 1212 /* Set up transmit timeout, 10 seconds. */ 1213#ifdef NETGRAPH 1214 d->timeout = 10; 1215#else 1216 d->ifp->if_timer = 10; 1217#endif 1218 } 1219#ifndef NETGRAPH 1220 d->ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1221#endif 1222} 1223 1224/* 1225 * Start output on the interface. 1226 * Always called on splimp(). 1227 */ 1228static void cx_start (drv_t *d) 1229{ 1230 int s = splhigh (); 1231 if (d->running) { 1232 if (! d->chan->dtr) 1233 cx_set_dtr (d->chan, 1); 1234 if (! d->chan->rts) 1235 cx_set_rts (d->chan, 1); 1236 cx_send (d); 1237 } 1238 splx (s); 1239} 1240 1241/* 1242 * Handle transmit timeouts. 1243 * Recover after lost transmit interrupts. 1244 * Always called on splimp(). 1245 */ 1246static void cx_watchdog (drv_t *d) 1247{ 1248 bdrv_t *bd = d->board->sys; 1249 1250 int s = splhigh (); 1251 CX_LOCK (bd); 1252 CX_DEBUG (d, ("device timeout\n")); 1253 if (d->running) { 1254 cx_setup_chan (d->chan); 1255 cx_start_chan (d->chan, 0, 0); 1256 cx_set_dtr (d->chan, 1); 1257 cx_set_rts (d->chan, 1); 1258 cx_start (d); 1259 } 1260 CX_UNLOCK (bd); 1261 splx (s); 1262} 1263 1264/* 1265 * Transmit callback function. 1266 */ 1267static void cx_transmit (cx_chan_t *c, void *attachment, int len) 1268{ 1269 drv_t *d = c->sys; 1270 1271 if (!d) 1272 return; 1273 1274 if (c->mode == M_ASYNC && d->tty) { 1275 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH); 1276 d->atimeout = 0; 1277 if (d->tty->t_dev) { 1278 d->intr_action |= CX_WRITE; 1279 MY_SOFT_INTR = 1; 1280 swi_sched (cx_fast_ih, 0); 1281 } 1282 return; 1283 } 1284#ifdef NETGRAPH 1285 d->timeout = 0; 1286#else 1287 ++d->ifp->if_opackets; 1288 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1289 d->ifp->if_timer = 0; 1290#endif 1291 cx_start (d); 1292} 1293 1294/* 1295 * Process the received packet. 1296 */ 1297static void cx_receive (cx_chan_t *c, char *data, int len) 1298{ 1299 drv_t *d = c->sys; 1300 struct mbuf *m; 1301 char *cc = data; 1302#ifdef NETGRAPH 1303 int error; 1304#endif 1305 1306 if (!d) 1307 return; 1308 1309 if (c->mode == M_ASYNC && d->tty) { 1310 if (d->tty->t_state & TS_ISOPEN) { 1311 async_q *q = &d->aqueue; 1312 int size = BF_SZ - 1 - AQ_GSZ (q); 1313 1314 if (len <= 0 && !size) 1315 return; 1316 1317 if (len > size) { 1318 c->ierrs++; 1319 cx_error (c, CX_OVERRUN); 1320 len = size - 1; 1321 } 1322 1323 while (len--) { 1324 AQ_PUSH (q, *(unsigned char *)cc); 1325 cc++; 1326 } 1327 1328 d->intr_action |= CX_READ; 1329 MY_SOFT_INTR = 1; 1330 swi_sched (cx_fast_ih, 0); 1331 } 1332 return; 1333 } 1334 if (! d->running) 1335 return; 1336 1337 m = makembuf (data, len); 1338 if (! m) { 1339 CX_DEBUG (d, ("no memory for packet\n")); 1340#ifndef NETGRAPH 1341 ++d->ifp->if_iqdrops; 1342#endif 1343 return; 1344 } 1345 if (c->debug > 1) 1346 printmbuf (m); 1347#ifdef NETGRAPH 1348 m->m_pkthdr.rcvif = 0; 1349 NG_SEND_DATA_ONLY (error, d->hook, m); 1350#else 1351 ++d->ifp->if_ipackets; 1352 m->m_pkthdr.rcvif = d->ifp; 1353 /* Check if there's a BPF listener on this interface. 1354 * If so, hand off the raw packet to bpf. */ 1355 if (d->ifp->if_bpf) 1356 BPF_TAP (d->ifp, data, len); 1357 IF_ENQUEUE (&d->queue, m); 1358#endif 1359} 1360 1361#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\ 1362 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\ 1363 && (!(tp->t_iflag & PARMRK)\ 1364 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\ 1365 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\ 1366 && linesw[tp->t_line]->l_rint == ttyinput) 1367 1368/* 1369 * Error callback function. 1370 */ 1371static void cx_error (cx_chan_t *c, int data) 1372{ 1373 drv_t *d = c->sys; 1374 async_q *q; 1375 1376 if (!d) 1377 return; 1378 1379 q = &(d->aqueue); 1380 1381 switch (data) { 1382 case CX_FRAME: 1383 CX_DEBUG (d, ("frame error\n")); 1384 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1385 && (AQ_GSZ (q) < BF_SZ - 1) 1386 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1387 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1388 AQ_PUSH (q, TTY_FE); 1389 d->intr_action |= CX_READ; 1390 MY_SOFT_INTR = 1; 1391 swi_sched (cx_fast_ih, 0); 1392 } 1393#ifndef NETGRAPH 1394 else 1395 ++d->ifp->if_ierrors; 1396#endif 1397 break; 1398 case CX_CRC: 1399 CX_DEBUG (d, ("crc error\n")); 1400 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1401 && (AQ_GSZ (q) < BF_SZ - 1) 1402 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1403 || !(d->tty->t_iflag & INPCK) 1404 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1405 AQ_PUSH (q, TTY_PE); 1406 d->intr_action |= CX_READ; 1407 MY_SOFT_INTR = 1; 1408 swi_sched (cx_fast_ih, 0); 1409 } 1410#ifndef NETGRAPH 1411 else 1412 ++d->ifp->if_ierrors; 1413#endif 1414 break; 1415 case CX_OVERRUN: 1416 CX_DEBUG (d, ("overrun error\n")); 1417#ifdef TTY_OE 1418 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1419 && (AQ_GSZ (q) < BF_SZ - 1) 1420 && (!CONDITION((&d->tty->t_termios), (d->tty)))) { 1421 AQ_PUSH (q, TTY_OE); 1422 d->intr_action |= CX_READ; 1423 MY_SOFT_INTR = 1; 1424 swi_sched (cx_fast_ih, 0); 1425 } 1426#endif 1427#ifndef NETGRAPH 1428 else { 1429 ++d->ifp->if_collisions; 1430 ++d->ifp->if_ierrors; 1431 } 1432#endif 1433 break; 1434 case CX_OVERFLOW: 1435 CX_DEBUG (d, ("overflow error\n")); 1436#ifndef NETGRAPH 1437 if (c->mode != M_ASYNC) 1438 ++d->ifp->if_ierrors; 1439#endif 1440 break; 1441 case CX_UNDERRUN: 1442 CX_DEBUG (d, ("underrun error\n")); 1443 if (c->mode != M_ASYNC) { 1444#ifdef NETGRAPH 1445 d->timeout = 0; 1446#else 1447 ++d->ifp->if_oerrors; 1448 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1449 d->ifp->if_timer = 0; 1450 cx_start (d); 1451#endif 1452 } 1453 break; 1454 case CX_BREAK: 1455 CX_DEBUG (d, ("break error\n")); 1456 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1457 && (AQ_GSZ (q) < BF_SZ - 1) 1458 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1459 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) { 1460 AQ_PUSH (q, TTY_BI); 1461 d->intr_action |= CX_READ; 1462 MY_SOFT_INTR = 1; 1463 swi_sched (cx_fast_ih, 0); 1464 } 1465#ifndef NETGRAPH 1466 else 1467 ++d->ifp->if_ierrors; 1468#endif 1469 break; 1470 default: 1471 CX_DEBUG (d, ("error #%d\n", data)); 1472 } 1473} 1474 1475static int cx_topen (struct tty *tp, struct cdev *dev) 1476{ 1477 bdrv_t *bd; 1478 drv_t *d; 1479 1480 d = tp->t_sc; 1481 CX_DEBUG2 (d, ("cx_open (serial)\n")); 1482 1483 bd = d->board->sys; 1484 1485 if (d->chan->mode != M_ASYNC) 1486 return (EBUSY); 1487 1488 d->open_dev |= 0x2; 1489 CX_LOCK (bd); 1490 cx_start_chan (d->chan, 0, 0); 1491 cx_set_dtr (d->chan, 1); 1492 cx_set_rts (d->chan, 1); 1493 d->cd = cx_get_cd (d->chan); 1494 CX_UNLOCK (bd); 1495 1496 CX_DEBUG2 (d, ("cx_open done\n")); 1497 1498 return 0; 1499} 1500 1501static void cx_tclose (struct tty *tp) 1502{ 1503 drv_t *d; 1504 bdrv_t *bd; 1505 1506 d = tp->t_sc; 1507 CX_DEBUG2 (d, ("cx_close\n")); 1508 bd = d->board->sys; 1509 CX_LOCK (bd); 1510 /* Disable receiver. 1511 * Transmitter continues sending the queued data. */ 1512 cx_enable_receive (d->chan, 0); 1513 CX_UNLOCK (bd); 1514 d->open_dev &= ~0x2; 1515} 1516 1517static int cx_tmodem (struct tty *tp, int sigon, int sigoff) 1518{ 1519 drv_t *d; 1520 bdrv_t *bd; 1521 1522 d = tp->t_sc; 1523 bd = d->board->sys; 1524 1525 CX_LOCK (bd); 1526 if (!sigon && !sigoff) { 1527 if (cx_get_dsr (d->chan)) sigon |= SER_DSR; 1528 if (cx_get_cd (d->chan)) sigon |= SER_DCD; 1529 if (cx_get_cts (d->chan)) sigon |= SER_CTS; 1530 if (d->chan->dtr) sigon |= SER_DTR; 1531 if (d->chan->rts) sigon |= SER_RTS; 1532 CX_UNLOCK (bd); 1533 return sigon; 1534 } 1535 1536 if (sigon & SER_DTR) 1537 cx_set_dtr (d->chan, 1); 1538 if (sigoff & SER_DTR) 1539 cx_set_dtr (d->chan, 0); 1540 if (sigon & SER_RTS) 1541 cx_set_rts (d->chan, 1); 1542 if (sigoff & SER_RTS) 1543 cx_set_rts (d->chan, 0); 1544 CX_UNLOCK (bd); 1545 1546 return (0); 1547} 1548 1549static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td) 1550{ 1551 int unit; 1552 drv_t *d; 1553 1554 d = dev->si_drv1; 1555 unit = d->chan->num; 1556 1557 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n", 1558 unit, flag, mode)); 1559 1560 d->open_dev |= 0x1; 1561 1562 CX_DEBUG2 (d, ("cx_open done\n")); 1563 1564 return 0; 1565} 1566 1567static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td) 1568{ 1569 drv_t *d; 1570 1571 d = dev->si_drv1; 1572 CX_DEBUG2 (d, ("cx_close\n")); 1573 d->open_dev &= ~0x1; 1574 return 0; 1575} 1576 1577static int cx_modem_status (drv_t *d) 1578{ 1579 bdrv_t *bd = d->board->sys; 1580 int status = 0, s = splhigh (); 1581 CX_LOCK (bd); 1582 /* Already opened by someone or network interface is up? */ 1583 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1584 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running)) 1585 status = TIOCM_LE; /* always enabled while open */ 1586 1587 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR; 1588 if (cx_get_cd (d->chan)) status |= TIOCM_CD; 1589 if (cx_get_cts (d->chan)) status |= TIOCM_CTS; 1590 if (d->chan->dtr) status |= TIOCM_DTR; 1591 if (d->chan->rts) status |= TIOCM_RTS; 1592 CX_UNLOCK (bd); 1593 splx (s); 1594 return status; 1595} 1596 1597static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1598{ 1599 drv_t *d; 1600 bdrv_t *bd; 1601 cx_chan_t *c; 1602 struct serial_statistics *st; 1603 int error, s; 1604 char mask[16]; 1605 1606 d = dev->si_drv1; 1607 c = d->chan; 1608 1609 bd = d->board->sys; 1610 1611 switch (cmd) { 1612 case SERIAL_GETREGISTERED: 1613 CX_DEBUG2 (d, ("ioctl: getregistered\n")); 1614 bzero (mask, sizeof(mask)); 1615 for (s=0; s<NCX*NCHAN; ++s) 1616 if (channel [s]) 1617 mask [s/8] |= 1 << (s & 7); 1618 bcopy (mask, data, sizeof (mask)); 1619 return 0; 1620 1621 case SERIAL_GETPORT: 1622 CX_DEBUG2 (d, ("ioctl: getport\n")); 1623 s = splhigh (); 1624 CX_LOCK (bd); 1625 *(int *)data = cx_get_port (c); 1626 CX_UNLOCK (bd); 1627 splx (s); 1628 if (*(int *)data<0) 1629 return (EINVAL); 1630 else 1631 return 0; 1632 1633 case SERIAL_SETPORT: 1634 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1635 /* Only for superuser! */ 1636 error = suser (td); 1637 if (error) 1638 return error; 1639 1640 s = splhigh (); 1641 CX_LOCK (bd); 1642 cx_set_port (c, *(int *)data); 1643 CX_UNLOCK (bd); 1644 splx (s); 1645 return 0; 1646 1647#ifndef NETGRAPH 1648 case SERIAL_GETPROTO: 1649 CX_DEBUG2 (d, ("ioctl: getproto\n")); 1650 s = splhigh (); 1651 CX_LOCK (bd); 1652 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" : 1653 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" : 1654 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp"); 1655 CX_UNLOCK (bd); 1656 splx (s); 1657 return 0; 1658 1659 case SERIAL_SETPROTO: 1660 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1661 /* Only for superuser! */ 1662 error = suser (td); 1663 if (error) 1664 return error; 1665 if (c->mode == M_ASYNC) 1666 return EBUSY; 1667 if (d->ifp->if_drv_flags & IFF_DRV_RUNNING) 1668 return EBUSY; 1669 if (! strcmp ("cisco", (char*)data)) { 1670 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR); 1671 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1672 d->ifp->if_flags |= PP_CISCO; 1673 } else if (! strcmp ("fr", (char*)data)) { 1674 d->ifp->if_flags &= ~(PP_CISCO); 1675 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE; 1676 } else if (! strcmp ("ppp", (char*)data)) { 1677 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE); 1678 d->ifp->if_flags &= ~(PP_CISCO); 1679 } else 1680 return EINVAL; 1681 return 0; 1682 1683 case SERIAL_GETKEEPALIVE: 1684 CX_DEBUG2 (d, ("ioctl: getkeepalive\n")); 1685 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1686 (d->ifp->if_flags & PP_CISCO) || 1687 (c->mode == M_ASYNC)) 1688 return EINVAL; 1689 s = splhigh (); 1690 CX_LOCK (bd); 1691 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0; 1692 CX_UNLOCK (bd); 1693 splx (s); 1694 return 0; 1695 1696 case SERIAL_SETKEEPALIVE: 1697 CX_DEBUG2 (d, ("ioctl: setkeepalive\n")); 1698 /* Only for superuser! */ 1699 error = suser (td); 1700 if (error) 1701 return error; 1702 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1703 (d->ifp->if_flags & PP_CISCO)) 1704 return EINVAL; 1705 s = splhigh (); 1706 CX_LOCK (bd); 1707 if (*(int*)data) 1708 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1709 else 1710 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE; 1711 CX_UNLOCK (bd); 1712 splx (s); 1713 return 0; 1714#endif /*NETGRAPH*/ 1715 1716 case SERIAL_GETMODE: 1717 CX_DEBUG2 (d, ("ioctl: getmode\n")); 1718 s = splhigh (); 1719 CX_LOCK (bd); 1720 *(int*)data = (c->mode == M_ASYNC) ? 1721 SERIAL_ASYNC : SERIAL_HDLC; 1722 CX_UNLOCK (bd); 1723 splx (s); 1724 return 0; 1725 1726 case SERIAL_SETMODE: 1727 CX_DEBUG2 (d, ("ioctl: setmode\n")); 1728 /* Only for superuser! */ 1729 error = suser (td); 1730 if (error) 1731 return error; 1732 1733 /* Somebody is waiting for carrier? */ 1734 if (d->lock) 1735 return EBUSY; 1736 /* /dev/ttyXX is already opened by someone? */ 1737 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1738 (d->open_dev|0x2)) 1739 return EBUSY; 1740 /* Network interface is up? 1741 * Cannot change to async mode. */ 1742 if (c->mode != M_ASYNC && d->running && 1743 (*(int*)data == SERIAL_ASYNC)) 1744 return EBUSY; 1745 1746 s = splhigh (); 1747 CX_LOCK (bd); 1748 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) { 1749 cx_set_mode (c, M_ASYNC); 1750 cx_enable_receive (c, 0); 1751 cx_enable_transmit (c, 0); 1752 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) { 1753 cx_set_mode (c, M_HDLC); 1754 cx_enable_receive (c, 1); 1755 cx_enable_transmit (c, 1); 1756 } 1757 CX_UNLOCK (bd); 1758 splx (s); 1759 return 0; 1760 1761 case SERIAL_GETSTAT: 1762 CX_DEBUG2 (d, ("ioctl: getestat\n")); 1763 st = (struct serial_statistics*) data; 1764 s = splhigh (); 1765 CX_LOCK (bd); 1766 st->rintr = c->rintr; 1767 st->tintr = c->tintr; 1768 st->mintr = c->mintr; 1769 st->ibytes = c->ibytes; 1770 st->ipkts = c->ipkts; 1771 st->ierrs = c->ierrs; 1772 st->obytes = c->obytes; 1773 st->opkts = c->opkts; 1774 st->oerrs = c->oerrs; 1775 CX_UNLOCK (bd); 1776 splx (s); 1777 return 0; 1778 1779 case SERIAL_CLRSTAT: 1780 CX_DEBUG2 (d, ("ioctl: clrstat\n")); 1781 /* Only for superuser! */ 1782 error = suser (td); 1783 if (error) 1784 return error; 1785 s = splhigh (); 1786 CX_LOCK (bd); 1787 c->rintr = 0; 1788 c->tintr = 0; 1789 c->mintr = 0; 1790 c->ibytes = 0; 1791 c->ipkts = 0; 1792 c->ierrs = 0; 1793 c->obytes = 0; 1794 c->opkts = 0; 1795 c->oerrs = 0; 1796 CX_UNLOCK (bd); 1797 splx (s); 1798 return 0; 1799 1800 case SERIAL_GETBAUD: 1801 CX_DEBUG2 (d, ("ioctl: getbaud\n")); 1802 if (c->mode == M_ASYNC) 1803 return EINVAL; 1804 s = splhigh (); 1805 CX_LOCK (bd); 1806 *(long*)data = cx_get_baud(c); 1807 CX_UNLOCK (bd); 1808 splx (s); 1809 return 0; 1810 1811 case SERIAL_SETBAUD: 1812 CX_DEBUG2 (d, ("ioctl: setbaud\n")); 1813 /* Only for superuser! */ 1814 error = suser (td); 1815 if (error) 1816 return error; 1817 if (c->mode == M_ASYNC) 1818 return EINVAL; 1819 s = splhigh (); 1820 CX_LOCK (bd); 1821 cx_set_baud (c, *(long*)data); 1822 CX_UNLOCK (bd); 1823 splx (s); 1824 return 0; 1825 1826 case SERIAL_GETLOOP: 1827 CX_DEBUG2 (d, ("ioctl: getloop\n")); 1828 if (c->mode == M_ASYNC) 1829 return EINVAL; 1830 s = splhigh (); 1831 CX_LOCK (bd); 1832 *(int*)data = cx_get_loop (c); 1833 CX_UNLOCK (bd); 1834 splx (s); 1835 return 0; 1836 1837 case SERIAL_SETLOOP: 1838 CX_DEBUG2 (d, ("ioctl: setloop\n")); 1839 /* Only for superuser! */ 1840 error = suser (td); 1841 if (error) 1842 return error; 1843 if (c->mode == M_ASYNC) 1844 return EINVAL; 1845 s = splhigh (); 1846 CX_LOCK (bd); 1847 cx_set_loop (c, *(int*)data); 1848 CX_UNLOCK (bd); 1849 splx (s); 1850 return 0; 1851 1852 case SERIAL_GETDPLL: 1853 CX_DEBUG2 (d, ("ioctl: getdpll\n")); 1854 if (c->mode == M_ASYNC) 1855 return EINVAL; 1856 s = splhigh (); 1857 CX_LOCK (bd); 1858 *(int*)data = cx_get_dpll (c); 1859 CX_UNLOCK (bd); 1860 splx (s); 1861 return 0; 1862 1863 case SERIAL_SETDPLL: 1864 CX_DEBUG2 (d, ("ioctl: setdpll\n")); 1865 /* Only for superuser! */ 1866 error = suser (td); 1867 if (error) 1868 return error; 1869 if (c->mode == M_ASYNC) 1870 return EINVAL; 1871 s = splhigh (); 1872 CX_LOCK (bd); 1873 cx_set_dpll (c, *(int*)data); 1874 CX_UNLOCK (bd); 1875 splx (s); 1876 return 0; 1877 1878 case SERIAL_GETNRZI: 1879 CX_DEBUG2 (d, ("ioctl: getnrzi\n")); 1880 if (c->mode == M_ASYNC) 1881 return EINVAL; 1882 s = splhigh (); 1883 CX_LOCK (bd); 1884 *(int*)data = cx_get_nrzi (c); 1885 CX_UNLOCK (bd); 1886 splx (s); 1887 return 0; 1888 1889 case SERIAL_SETNRZI: 1890 CX_DEBUG2 (d, ("ioctl: setnrzi\n")); 1891 /* Only for superuser! */ 1892 error = suser (td); 1893 if (error) 1894 return error; 1895 if (c->mode == M_ASYNC) 1896 return EINVAL; 1897 s = splhigh (); 1898 CX_LOCK (bd); 1899 cx_set_nrzi (c, *(int*)data); 1900 CX_UNLOCK (bd); 1901 splx (s); 1902 return 0; 1903 1904 case SERIAL_GETDEBUG: 1905 CX_DEBUG2 (d, ("ioctl: getdebug\n")); 1906 s = splhigh (); 1907 CX_LOCK (bd); 1908 *(int*)data = c->debug; 1909 CX_UNLOCK (bd); 1910 splx (s); 1911 return 0; 1912 1913 case SERIAL_SETDEBUG: 1914 CX_DEBUG2 (d, ("ioctl: setdebug\n")); 1915 /* Only for superuser! */ 1916 error = suser (td); 1917 if (error) 1918 return error; 1919 s = splhigh (); 1920 CX_LOCK (bd); 1921 c->debug = *(int*)data; 1922 CX_UNLOCK (bd); 1923 splx (s); 1924#ifndef NETGRAPH 1925 if (d->chan->debug) 1926 d->ifp->if_flags |= IFF_DEBUG; 1927 else 1928 d->ifp->if_flags &= (~IFF_DEBUG); 1929#endif 1930 return 0; 1931 } 1932 1933 switch (cmd) { 1934 case TIOCSDTR: /* Set DTR */ 1935 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n")); 1936 s = splhigh (); 1937 CX_LOCK (bd); 1938 cx_set_dtr (c, 1); 1939 CX_UNLOCK (bd); 1940 splx (s); 1941 return 0; 1942 1943 case TIOCCDTR: /* Clear DTR */ 1944 CX_DEBUG2 (d, ("ioctl: tioccdtr\n")); 1945 s = splhigh (); 1946 CX_LOCK (bd); 1947 cx_set_dtr (c, 0); 1948 CX_UNLOCK (bd); 1949 splx (s); 1950 return 0; 1951 1952 case TIOCMSET: /* Set DTR/RTS */ 1953 CX_DEBUG2 (d, ("ioctl: tiocmset\n")); 1954 s = splhigh (); 1955 CX_LOCK (bd); 1956 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0); 1957 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0); 1958 CX_UNLOCK (bd); 1959 splx (s); 1960 return 0; 1961 1962 case TIOCMBIS: /* Add DTR/RTS */ 1963 CX_DEBUG2 (d, ("ioctl: tiocmbis\n")); 1964 s = splhigh (); 1965 CX_LOCK (bd); 1966 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1); 1967 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1); 1968 CX_UNLOCK (bd); 1969 splx (s); 1970 return 0; 1971 1972 case TIOCMBIC: /* Clear DTR/RTS */ 1973 CX_DEBUG2 (d, ("ioctl: tiocmbic\n")); 1974 s = splhigh (); 1975 CX_LOCK (bd); 1976 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0); 1977 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0); 1978 CX_UNLOCK (bd); 1979 splx (s); 1980 return 0; 1981 1982 case TIOCMGET: /* Get modem status */ 1983 CX_DEBUG2 (d, ("ioctl: tiocmget\n")); 1984 *(int*)data = cx_modem_status (d); 1985 return 0; 1986 1987 } 1988 1989 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd)); 1990 return ENOTTY; 1991} 1992 1993void cx_softintr (void *unused) 1994{ 1995 drv_t *d; 1996 bdrv_t *bd; 1997 async_q *q; 1998 int i, s, ic, k; 1999 while (MY_SOFT_INTR) { 2000 MY_SOFT_INTR = 0; 2001 for (i=0; i<NCX*NCHAN; ++i) { 2002 d = channel [i]; 2003 if (!d || !d->chan || d->chan->type == T_NONE 2004 || d->chan->mode != M_ASYNC || !d->tty 2005 || !d->tty->t_dev) 2006 continue; 2007 bd = d->board->sys; 2008 s = splhigh (); 2009 CX_LOCK (bd); 2010 if (d->intr_action & CX_READ) { 2011 q = &(d->aqueue); 2012 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) { 2013 k = AQ_GSZ(q); 2014 if (d->tty->t_rawq.c_cc + k > 2015 d->tty->t_ihiwat 2016 && (d->tty->t_cflag & CRTS_IFLOW 2017 || d->tty->t_iflag & IXOFF) 2018 && !(d->tty->t_state & TS_TBLOCK)) 2019 ttyblock(d->tty); 2020 d->tty->t_rawcc += k; 2021 while (k>0) { 2022 k--; 2023 AQ_POP (q, ic); 2024 CX_UNLOCK (bd); 2025 splx (s); 2026 putc (ic, &d->tty->t_rawq); 2027 s = splhigh (); 2028 CX_LOCK (bd); 2029 } 2030 ttwakeup(d->tty); 2031 if (d->tty->t_state & TS_TTSTOP 2032 && (d->tty->t_iflag & IXANY 2033 || d->tty->t_cc[VSTART] == 2034 d->tty->t_cc[VSTOP])) { 2035 d->tty->t_state &= ~TS_TTSTOP; 2036 d->tty->t_lflag &= ~FLUSHO; 2037 d->intr_action |= CX_WRITE; 2038 } 2039 } else { 2040 while (q->end != q->beg) { 2041 AQ_POP (q, ic); 2042 CX_UNLOCK (bd); 2043 splx (s); 2044 ttyld_rint (d->tty, ic); 2045 s = splhigh (); 2046 CX_LOCK (bd); 2047 } 2048 } 2049 d->intr_action &= ~CX_READ; 2050 } 2051 splx (s); 2052 CX_UNLOCK (bd); 2053 2054 s = splhigh (); 2055 CX_LOCK (bd); 2056 if (d->intr_action & CX_WRITE) { 2057 if (d->tty->t_line) 2058 ttyld_start (d->tty); 2059 else 2060 cx_oproc (d->tty); 2061 d->intr_action &= ~CX_WRITE; 2062 } 2063 CX_UNLOCK (bd); 2064 splx (s); 2065 2066 } 2067 } 2068} 2069 2070/* 2071 * Fill transmitter buffer with data. 2072 */ 2073static void cx_oproc (struct tty *tp) 2074{ 2075 int s, k; 2076 drv_t *d; 2077 bdrv_t *bd; 2078 static u_char buf[DMABUFSZ]; 2079 u_char *p; 2080 u_short len = 0, sublen = 0; 2081 2082 d = tp->t_sc; 2083 bd = d->board->sys; 2084 2085 CX_DEBUG2 (d, ("cx_oproc\n")); 2086 2087 s = splhigh (); 2088 CX_LOCK (bd); 2089 2090 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts) 2091 cx_set_rts (d->chan, 0); 2092 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts) 2093 cx_set_rts (d->chan, 1); 2094 2095 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) { 2096 /* Start transmitter. */ 2097 cx_enable_transmit (d->chan, 1); 2098 2099 /* Is it busy? */ 2100 if (! cx_buf_free (d->chan)) { 2101 tp->t_state |= TS_BUSY; 2102 CX_UNLOCK (bd); 2103 splx (s); 2104 return; 2105 } 2106 if (tp->t_iflag & IXOFF) { 2107 p = (buf + (DMABUFSZ/2)); 2108 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2109 k = sublen; 2110 while (k--) { 2111 /* Send XON/XOFF out of band. */ 2112 if (*p == tp->t_cc[VSTOP]) { 2113 cx_xflow_ctl (d->chan, 0); 2114 p++; 2115 continue; 2116 } 2117 if (*p == tp->t_cc[VSTART]) { 2118 cx_xflow_ctl (d->chan, 1); 2119 p++; 2120 continue; 2121 } 2122 buf[len] = *p; 2123 len++; 2124 p++; 2125 } 2126 } else { 2127 p = buf; 2128 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2129 } 2130 if (len) { 2131 cx_send_packet (d->chan, buf, len, 0); 2132 tp->t_state |= TS_BUSY; 2133 d->atimeout = 10; 2134 CX_DEBUG2 (d, ("out %d bytes\n", len)); 2135 } 2136 } 2137 ttwwakeup (tp); 2138 CX_UNLOCK (bd); 2139 splx (s); 2140} 2141 2142static int cx_param (struct tty *tp, struct termios *t) 2143{ 2144 drv_t *d; 2145 bdrv_t *bd; 2146 int s, bits, parity; 2147 2148 d = tp->t_sc; 2149 bd = d->board->sys; 2150 2151 s = splhigh (); 2152 CX_LOCK (bd); 2153 if (t->c_ospeed == 0) { 2154 /* Clear DTR and RTS. */ 2155 cx_set_dtr (d->chan, 0); 2156 CX_UNLOCK (bd); 2157 splx (s); 2158 CX_DEBUG2 (d, ("cx_param (hangup)\n")); 2159 return 0; 2160 } 2161 CX_DEBUG2 (d, ("cx_param\n")); 2162 2163 /* Check requested parameters. */ 2164 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) { 2165 CX_UNLOCK (bd); 2166 splx (s); 2167 return EINVAL; 2168 } 2169 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) { 2170 CX_UNLOCK (bd); 2171 splx (s); 2172 return EINVAL; 2173 } 2174 2175 /* And copy them to tty and channel structures. */ 2176 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed; 2177 tp->t_cflag = t->c_cflag; 2178 2179 /* Set character length and parity mode. */ 2180 switch (t->c_cflag & CSIZE) { 2181 default: 2182 case CS8: bits = 8; break; 2183 case CS7: bits = 7; break; 2184 case CS6: bits = 6; break; 2185 case CS5: bits = 5; break; 2186 } 2187 2188 parity = ((t->c_cflag & PARENB) ? 1 : 0) * 2189 (1 + ((t->c_cflag & PARODD) ? 0 : 1)); 2190 2191 /* Set current channel number. */ 2192 if (! d->chan->dtr) 2193 cx_set_dtr (d->chan, 1); 2194 2195 ttyldoptim (tp); 2196 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB), 2197 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS), 2198 (t->c_iflag & IXON), (t->c_iflag & IXANY), 2199 t->c_cc[VSTART], t->c_cc[VSTOP]); 2200 CX_UNLOCK (bd); 2201 splx (s); 2202 return 0; 2203} 2204 2205/* 2206 * Stop output on a line 2207 */ 2208static void cx_stop (struct tty *tp, int flag) 2209{ 2210 drv_t *d; 2211 bdrv_t *bd; 2212 int s; 2213 2214 d = tp->t_sc; 2215 bd = d->board->sys; 2216 2217 s = splhigh (); 2218 CX_LOCK (bd); 2219 if (tp->t_state & TS_BUSY) { 2220 /* Stop transmitter */ 2221 CX_DEBUG2 (d, ("cx_stop\n")); 2222 cx_transmitter_ctl (d->chan, 0); 2223 } 2224 CX_UNLOCK (bd); 2225 splx (s); 2226} 2227 2228/* 2229 * Process the (delayed) carrier signal setup. 2230 */ 2231static void cx_carrier (void *arg) 2232{ 2233 drv_t *d = arg; 2234 bdrv_t *bd = d->board->sys; 2235 cx_chan_t *c = d->chan; 2236 int s, cd; 2237 2238 s = splhigh (); 2239 CX_LOCK (bd); 2240 cd = cx_get_cd (c); 2241 if (d->cd != cd) { 2242 if (cd) { 2243 CX_DEBUG (d, ("carrier on\n")); 2244 d->cd = 1; 2245 CX_UNLOCK (bd); 2246 splx (s); 2247 if (d->tty) 2248 ttyld_modem(d->tty, 1); 2249 } else { 2250 CX_DEBUG (d, ("carrier loss\n")); 2251 d->cd = 0; 2252 CX_UNLOCK (bd); 2253 splx (s); 2254 if (d->tty) 2255 ttyld_modem(d->tty, 0); 2256 } 2257 } else { 2258 CX_UNLOCK (bd); 2259 splx (s); 2260 } 2261} 2262 2263/* 2264 * Modem signal callback function. 2265 */ 2266static void cx_modem (cx_chan_t *c) 2267{ 2268 drv_t *d = c->sys; 2269 2270 if (!d || c->mode != M_ASYNC) 2271 return; 2272 /* Handle carrier detect/loss. */ 2273 /* Carrier changed - delay processing DCD for a while 2274 * to give both sides some time to initialize. */ 2275 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d); 2276} 2277 2278#ifdef NETGRAPH 2279static int ng_cx_constructor (node_p node) 2280{ 2281 drv_t *d = NG_NODE_PRIVATE (node); 2282 CX_DEBUG (d, ("Constructor\n")); 2283 return EINVAL; 2284} 2285 2286static int ng_cx_newhook (node_p node, hook_p hook, const char *name) 2287{ 2288 int s; 2289 drv_t *d = NG_NODE_PRIVATE (node); 2290 bdrv_t *bd = d->board->sys; 2291 2292 if (d->chan->mode == M_ASYNC) 2293 return EINVAL; 2294 2295 /* Attach debug hook */ 2296 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) { 2297 NG_HOOK_SET_PRIVATE (hook, NULL); 2298 d->debug_hook = hook; 2299 return 0; 2300 } 2301 2302 /* Check for raw hook */ 2303 if (strcmp (name, NG_CX_HOOK_RAW) != 0) 2304 return EINVAL; 2305 2306 NG_HOOK_SET_PRIVATE (hook, d); 2307 d->hook = hook; 2308 s = splhigh (); 2309 CX_LOCK (bd); 2310 cx_up (d); 2311 CX_UNLOCK (bd); 2312 splx (s); 2313 return 0; 2314} 2315 2316static int print_modems (char *s, cx_chan_t *c, int need_header) 2317{ 2318 int status = cx_modem_status (c->sys); 2319 int length = 0; 2320 2321 if (need_header) 2322 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n"); 2323 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n", 2324 status & TIOCM_LE ? "On" : "-", 2325 status & TIOCM_DTR ? "On" : "-", 2326 status & TIOCM_DSR ? "On" : "-", 2327 status & TIOCM_RTS ? "On" : "-", 2328 status & TIOCM_CTS ? "On" : "-", 2329 status & TIOCM_CD ? "On" : "-"); 2330 return length; 2331} 2332 2333static int print_stats (char *s, cx_chan_t *c, int need_header) 2334{ 2335 int length = 0; 2336 2337 if (need_header) 2338 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n"); 2339 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n", 2340 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts, 2341 c->ierrs, c->obytes, c->opkts, c->oerrs); 2342 return length; 2343} 2344 2345static int print_chan (char *s, cx_chan_t *c) 2346{ 2347 drv_t *d = c->sys; 2348 int length = 0; 2349 2350 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num); 2351 if (d->chan->debug) 2352 length += sprintf (s + length, " debug=%d", d->chan->debug); 2353 2354 if (cx_get_baud (c)) 2355 length += sprintf (s + length, " %ld", cx_get_baud (c)); 2356 else 2357 length += sprintf (s + length, " extclock"); 2358 2359 if (c->mode == M_HDLC) { 2360 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off"); 2361 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off"); 2362 } 2363 2364 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n"); 2365 return length; 2366} 2367 2368static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook) 2369{ 2370 drv_t *d = NG_NODE_PRIVATE (node); 2371 struct ng_mesg *msg; 2372 struct ng_mesg *resp = NULL; 2373 int error = 0; 2374 2375 if (!d) 2376 return EINVAL; 2377 2378 CX_DEBUG (d, ("Rcvmsg\n")); 2379 NGI_GET_MSG (item, msg); 2380 switch (msg->header.typecookie) { 2381 default: 2382 error = EINVAL; 2383 break; 2384 2385 case NGM_CX_COOKIE: 2386 printf ("Don't forget to implement\n"); 2387 error = EINVAL; 2388 break; 2389 2390 case NGM_GENERIC_COOKIE: 2391 switch (msg->header.cmd) { 2392 default: 2393 error = EINVAL; 2394 break; 2395 2396 case NGM_TEXT_STATUS: { 2397 char *s; 2398 int l = 0; 2399 int dl = sizeof (struct ng_mesg) + 730; 2400 2401 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT); 2402 if (! resp) { 2403 error = ENOMEM; 2404 break; 2405 } 2406 bzero (resp, dl); 2407 s = (resp)->data; 2408 l += print_chan (s + l, d->chan); 2409 l += print_stats (s + l, d->chan, 1); 2410 l += print_modems (s + l, d->chan, 1); 2411 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRLEN); 2412 } 2413 break; 2414 } 2415 break; 2416 } 2417 NG_RESPOND_MSG (error, node, item, resp); 2418 NG_FREE_MSG (msg); 2419 return error; 2420} 2421 2422static int ng_cx_rcvdata (hook_p hook, item_p item) 2423{ 2424 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook)); 2425 struct mbuf *m; 2426 struct ng_tag_prio *ptag; 2427 bdrv_t *bd; 2428 struct ifqueue *q; 2429 int s; 2430 2431 NGI_GET_M (item, m); 2432 NG_FREE_ITEM (item); 2433 if (! NG_HOOK_PRIVATE (hook) || ! d) { 2434 NG_FREE_M (m); 2435 return ENETDOWN; 2436 } 2437 2438 bd = d->board->sys; 2439 /* Check for high priority data */ 2440 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE, 2441 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) ) 2442 q = &d->hi_queue; 2443 else 2444 q = &d->lo_queue; 2445 2446 s = splhigh (); 2447 CX_LOCK (bd); 2448 IF_LOCK (q); 2449 if (_IF_QFULL (q)) { 2450 _IF_DROP (q); 2451 IF_UNLOCK (q); 2452 CX_UNLOCK (bd); 2453 splx (s); 2454 NG_FREE_M (m); 2455 return ENOBUFS; 2456 } 2457 _IF_ENQUEUE (q, m); 2458 IF_UNLOCK (q); 2459 cx_start (d); 2460 CX_UNLOCK (bd); 2461 splx (s); 2462 return 0; 2463} 2464 2465static int ng_cx_rmnode (node_p node) 2466{ 2467 drv_t *d = NG_NODE_PRIVATE (node); 2468 bdrv_t *bd; 2469 2470 CX_DEBUG (d, ("Rmnode\n")); 2471 if (d && d->running) { 2472 int s = splhigh (); 2473 bd = d->board->sys; 2474 CX_LOCK (bd); 2475 cx_down (d); 2476 CX_UNLOCK (bd); 2477 splx (s); 2478 } 2479#ifdef KLD_MODULE 2480 if (node->nd_flags & NGF_REALLY_DIE) { 2481 NG_NODE_SET_PRIVATE (node, NULL); 2482 NG_NODE_UNREF (node); 2483 } 2484 NG_NODE_REVIVE(node); /* Persistant node */ 2485#endif 2486 return 0; 2487} 2488 2489static void ng_cx_watchdog (void *arg) 2490{ 2491 drv_t *d = arg; 2492 2493 if (d->timeout == 1) 2494 cx_watchdog (d); 2495 if (d->timeout) 2496 d->timeout--; 2497 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2498} 2499 2500static int ng_cx_connect (hook_p hook) 2501{ 2502 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2503 2504 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2505 return 0; 2506} 2507 2508static int ng_cx_disconnect (hook_p hook) 2509{ 2510 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2511 bdrv_t *bd = d->board->sys; 2512 int s; 2513 2514 s = splhigh (); 2515 CX_LOCK (bd); 2516 if (NG_HOOK_PRIVATE (hook)) 2517 cx_down (d); 2518 CX_UNLOCK (bd); 2519 splx (s); 2520 /* If we were wait it than it reasserted now, just stop it. */ 2521 if (!callout_drain (&d->timeout_handle)) 2522 callout_stop (&d->timeout_handle); 2523 return 0; 2524} 2525#endif /*NETGRAPH*/ 2526 2527static int cx_modevent (module_t mod, int type, void *unused) 2528{ 2529 static int load_count = 0; 2530 2531 if (!debug_mpsafenet && cx_mpsafenet) { 2532 printf ("WORNING! Network stack is not MPSAFE. " 2533 "Turning off debug.cx.mpsafenet.\n"); 2534 cx_mpsafenet = 0; 2535 } 2536 if (cx_mpsafenet) 2537 cx_cdevsw.d_flags &= ~D_NEEDGIANT; 2538 2539 switch (type) { 2540 case MOD_LOAD: 2541#ifdef NETGRAPH 2542 if (ng_newtype (&typestruct)) 2543 printf ("Failed to register ng_cx\n"); 2544#endif 2545 ++load_count; 2546 2547 callout_init (&timeout_handle, cx_mpsafenet?CALLOUT_MPSAFE:0); 2548 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 2549 /* Software interrupt. */ 2550 swi_add(&tty_ithd, "cx", cx_softintr, NULL, SWI_TTY, 2551 (cx_mpsafenet?INTR_MPSAFE:0), &cx_fast_ih); 2552 break; 2553 case MOD_UNLOAD: 2554 if (load_count == 1) { 2555 printf ("Removing device entry for Sigma\n"); 2556#ifdef NETGRAPH 2557 ng_rmtype (&typestruct); 2558#endif 2559 } 2560 /* If we were wait it than it reasserted now, just stop it. */ 2561 if (!callout_drain (&timeout_handle)) 2562 callout_stop (&timeout_handle); 2563 ithread_remove_handler (cx_fast_ih); 2564 --load_count; 2565 break; 2566 case MOD_SHUTDOWN: 2567 break; 2568 } 2569 return 0; 2570} 2571 2572#ifdef NETGRAPH 2573static struct ng_type typestruct = { 2574 .version = NG_ABI_VERSION, 2575 .name = NG_CX_NODE_TYPE, 2576 .constructor = ng_cx_constructor, 2577 .rcvmsg = ng_cx_rcvmsg, 2578 .shutdown = ng_cx_rmnode, 2579 .newhook = ng_cx_newhook, 2580 .connect = ng_cx_connect, 2581 .rcvdata = ng_cx_rcvdata, 2582 .disconnect = ng_cx_disconnect, 2583}; 2584#endif /*NETGRAPH*/ 2585 2586#ifdef NETGRAPH 2587MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 2588#else 2589MODULE_DEPEND (isa_cx, sppp, 1, 1, 1); 2590#endif 2591DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL); 2592MODULE_VERSION (cx, 1); 2593