if_cx.c revision 180132
1236340Sobrien/*- 2236340Sobrien * Cronyx-Sigma adapter driver for FreeBSD. 3236340Sobrien * Supports PPP/HDLC and Cisco/HDLC protocol in synchronous mode, 4236340Sobrien * and asyncronous channels with full modem control. 5236340Sobrien * Keepalive protocol implemented in both Cisco and PPP modes. 6236340Sobrien * 7236340Sobrien * Copyright (C) 1994-2002 Cronyx Engineering. 8236340Sobrien * Author: Serge Vakulenko, <vak@cronyx.ru> 9236340Sobrien * 10236340Sobrien * Copyright (C) 1999-2004 Cronyx Engineering. 11236340Sobrien * Rewritten on DDK, ported to NETGRAPH, rewritten for FreeBSD 3.x-5.x by 12236340Sobrien * Kurakin Roman, <rik@cronyx.ru> 13236340Sobrien * 14236340Sobrien * This software is distributed with NO WARRANTIES, not even the implied 15236340Sobrien * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 16236340Sobrien * 17236340Sobrien * Authors grant any other persons or organisations a permission to use, 18236340Sobrien * modify and redistribute this software in source and binary forms, 19236340Sobrien * 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 180132 2008-06-30 21:18:27Z 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/priv.h> 34#include <sys/proc.h> 35#include <sys/mbuf.h> 36#include <sys/sockio.h> 37#include <sys/malloc.h> 38#include <sys/socket.h> 39#include <sys/sysctl.h> 40#include <sys/conf.h> 41#include <sys/errno.h> 42#include <sys/serial.h> 43#include <sys/tty.h> 44#include <sys/bus.h> 45#include <machine/bus.h> 46#include <sys/rman.h> 47#include <isa/isavar.h> 48#include <sys/fcntl.h> 49#include <sys/interrupt.h> 50#include <vm/vm.h> 51#include <vm/pmap.h> 52#include <net/if.h> 53#include <machine/cpufunc.h> 54#include <machine/cserial.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 interrupt 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 NULL, 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_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 961 962 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 963 964 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res); 965 966 CX_LOCK (bd); 967 cx_close_board (b); 968 969 /* Detach the interfaces, free buffer memory. */ 970 for (c = b->chan; c < b->chan + NCHAN; ++c) { 971 drv_t *d = (drv_t*) c->sys; 972 973 if (!d || d->chan->type == T_NONE) 974 continue; 975 976 if (d->tty) { 977 ttyfree (d->tty); 978 d->tty = NULL; 979 } 980 981#ifdef NETGRAPH 982 if (d->node) { 983 ng_rmnode_self (d->node); 984 NG_NODE_UNREF (d->node); 985 d->node = NULL; 986 } 987 mtx_destroy (&d->lo_queue.ifq_mtx); 988 mtx_destroy (&d->hi_queue.ifq_mtx); 989#else 990 /* Detach from the packet filter list of interfaces. */ 991 bpfdetach (d->ifp); 992 /* Detach from the sync PPP list. */ 993 sppp_detach (d->ifp); 994 995 if_detach (d->ifp); 996 if_free(d->ifp); 997 /* XXXRIK: check interconnection with irq handler */ 998 IF_DRAIN (&d->queue); 999 mtx_destroy (&d->queue.ifq_mtx); 1000#endif 1001 destroy_dev (d->devt); 1002 } 1003 1004 cx_led_off (b); 1005 CX_UNLOCK (bd); 1006 callout_drain (&led_timo[b->num]); 1007 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1008 drv_t *d = c->sys; 1009 1010 if (!d || d->chan->type == T_NONE) 1011 continue; 1012 1013 callout_drain (&d->dcd_timeout_handle); 1014 } 1015 splx (s); 1016 1017 s = splhigh (); 1018 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1019 drv_t *d = (drv_t*) c->sys; 1020 1021 if (!d || d->chan->type == T_NONE) 1022 continue; 1023 1024 /* Deallocate buffers. */ 1025 cx_bus_dma_mem_free (&d->dmamem); 1026 } 1027 bd->board = 0; 1028 adapter [b->num] = 0; 1029 free (b, M_DEVBUF); 1030 splx (s); 1031 1032 mtx_destroy (&bd->cx_mtx); 1033 1034 return 0; 1035} 1036 1037#ifndef NETGRAPH 1038static void cx_ifstart (struct ifnet *ifp) 1039{ 1040 drv_t *d = ifp->if_softc; 1041 bdrv_t *bd = d->board->sys; 1042 1043 CX_LOCK (bd); 1044 cx_start (d); 1045 CX_UNLOCK (bd); 1046} 1047 1048static void cx_ifwatchdog (struct ifnet *ifp) 1049{ 1050 drv_t *d = ifp->if_softc; 1051 1052 cx_watchdog (d); 1053} 1054 1055static void cx_tlf (struct sppp *sp) 1056{ 1057 drv_t *d = SP2IFP(sp)->if_softc; 1058 1059 CX_DEBUG (d, ("cx_tlf\n")); 1060/* cx_set_dtr (d->chan, 0);*/ 1061/* cx_set_rts (d->chan, 0);*/ 1062 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1063 sp->pp_down (sp); 1064} 1065 1066static void cx_tls (struct sppp *sp) 1067{ 1068 drv_t *d = SP2IFP(sp)->if_softc; 1069 1070 CX_DEBUG (d, ("cx_tls\n")); 1071 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1072 sp->pp_up (sp); 1073} 1074 1075/* 1076 * Initialization of interface. 1077 * It seems to be never called by upper level. 1078 */ 1079static void cx_initialize (void *softc) 1080{ 1081 drv_t *d = softc; 1082 1083 CX_DEBUG (d, ("cx_initialize\n")); 1084} 1085 1086/* 1087 * Process an ioctl request. 1088 */ 1089static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data) 1090{ 1091 drv_t *d = ifp->if_softc; 1092 bdrv_t *bd = d->board->sys; 1093 int error, s, was_up, should_be_up; 1094 1095 /* No socket ioctls while the channel is in async mode. */ 1096 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC) 1097 return EBUSY; 1098 1099 /* Socket ioctls on slave subchannels are not allowed. */ 1100 was_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1101 error = sppp_ioctl (ifp, cmd, data); 1102 if (error) 1103 return error; 1104 1105 s = splhigh (); 1106 CX_LOCK (bd); 1107 if (! (ifp->if_flags & IFF_DEBUG)) 1108 d->chan->debug = 0; 1109 else 1110 d->chan->debug = d->chan->debug_shadow; 1111 CX_UNLOCK (bd); 1112 splx (s); 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 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 BPF_TAP (d->ifp, data, len); 1356 IF_ENQUEUE (&d->queue, m); 1357#endif 1358} 1359 1360#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\ 1361 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\ 1362 && (!(tp->t_iflag & PARMRK)\ 1363 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\ 1364 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\ 1365 && linesw[tp->t_line]->l_rint == ttyinput) 1366 1367/* 1368 * Error callback function. 1369 */ 1370static void cx_error (cx_chan_t *c, int data) 1371{ 1372 drv_t *d = c->sys; 1373 async_q *q; 1374 1375 if (!d) 1376 return; 1377 1378 q = &(d->aqueue); 1379 1380 switch (data) { 1381 case CX_FRAME: 1382 CX_DEBUG (d, ("frame error\n")); 1383 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1384 && (AQ_GSZ (q) < BF_SZ - 1) 1385 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1386 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1387 AQ_PUSH (q, TTY_FE); 1388 d->intr_action |= CX_READ; 1389 MY_SOFT_INTR = 1; 1390 swi_sched (cx_fast_ih, 0); 1391 } 1392#ifndef NETGRAPH 1393 else 1394 ++d->ifp->if_ierrors; 1395#endif 1396 break; 1397 case CX_CRC: 1398 CX_DEBUG (d, ("crc error\n")); 1399 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1400 && (AQ_GSZ (q) < BF_SZ - 1) 1401 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1402 || !(d->tty->t_iflag & INPCK) 1403 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1404 AQ_PUSH (q, TTY_PE); 1405 d->intr_action |= CX_READ; 1406 MY_SOFT_INTR = 1; 1407 swi_sched (cx_fast_ih, 0); 1408 } 1409#ifndef NETGRAPH 1410 else 1411 ++d->ifp->if_ierrors; 1412#endif 1413 break; 1414 case CX_OVERRUN: 1415 CX_DEBUG (d, ("overrun error\n")); 1416#ifdef TTY_OE 1417 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1418 && (AQ_GSZ (q) < BF_SZ - 1) 1419 && (!CONDITION((&d->tty->t_termios), (d->tty)))) { 1420 AQ_PUSH (q, TTY_OE); 1421 d->intr_action |= CX_READ; 1422 MY_SOFT_INTR = 1; 1423 swi_sched (cx_fast_ih, 0); 1424 } 1425#endif 1426#ifndef NETGRAPH 1427 else { 1428 ++d->ifp->if_collisions; 1429 ++d->ifp->if_ierrors; 1430 } 1431#endif 1432 break; 1433 case CX_OVERFLOW: 1434 CX_DEBUG (d, ("overflow error\n")); 1435#ifndef NETGRAPH 1436 if (c->mode != M_ASYNC) 1437 ++d->ifp->if_ierrors; 1438#endif 1439 break; 1440 case CX_UNDERRUN: 1441 CX_DEBUG (d, ("underrun error\n")); 1442 if (c->mode != M_ASYNC) { 1443#ifdef NETGRAPH 1444 d->timeout = 0; 1445#else 1446 ++d->ifp->if_oerrors; 1447 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1448 d->ifp->if_timer = 0; 1449 cx_start (d); 1450#endif 1451 } 1452 break; 1453 case CX_BREAK: 1454 CX_DEBUG (d, ("break error\n")); 1455 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1456 && (AQ_GSZ (q) < BF_SZ - 1) 1457 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1458 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) { 1459 AQ_PUSH (q, TTY_BI); 1460 d->intr_action |= CX_READ; 1461 MY_SOFT_INTR = 1; 1462 swi_sched (cx_fast_ih, 0); 1463 } 1464#ifndef NETGRAPH 1465 else 1466 ++d->ifp->if_ierrors; 1467#endif 1468 break; 1469 default: 1470 CX_DEBUG (d, ("error #%d\n", data)); 1471 } 1472} 1473 1474static int cx_topen (struct tty *tp, struct cdev *dev) 1475{ 1476 bdrv_t *bd; 1477 drv_t *d; 1478 1479 d = tp->t_sc; 1480 CX_DEBUG2 (d, ("cx_open (serial)\n")); 1481 1482 bd = d->board->sys; 1483 1484 if (d->chan->mode != M_ASYNC) 1485 return (EBUSY); 1486 1487 d->open_dev |= 0x2; 1488 CX_LOCK (bd); 1489 cx_start_chan (d->chan, 0, 0); 1490 cx_set_dtr (d->chan, 1); 1491 cx_set_rts (d->chan, 1); 1492 d->cd = cx_get_cd (d->chan); 1493 CX_UNLOCK (bd); 1494 1495 CX_DEBUG2 (d, ("cx_open done\n")); 1496 1497 return 0; 1498} 1499 1500static void cx_tclose (struct tty *tp) 1501{ 1502 drv_t *d; 1503 bdrv_t *bd; 1504 1505 d = tp->t_sc; 1506 CX_DEBUG2 (d, ("cx_close\n")); 1507 bd = d->board->sys; 1508 CX_LOCK (bd); 1509 /* Disable receiver. 1510 * Transmitter continues sending the queued data. */ 1511 cx_enable_receive (d->chan, 0); 1512 CX_UNLOCK (bd); 1513 d->open_dev &= ~0x2; 1514} 1515 1516static int cx_tmodem (struct tty *tp, int sigon, int sigoff) 1517{ 1518 drv_t *d; 1519 bdrv_t *bd; 1520 1521 d = tp->t_sc; 1522 bd = d->board->sys; 1523 1524 CX_LOCK (bd); 1525 if (!sigon && !sigoff) { 1526 if (cx_get_dsr (d->chan)) sigon |= SER_DSR; 1527 if (cx_get_cd (d->chan)) sigon |= SER_DCD; 1528 if (cx_get_cts (d->chan)) sigon |= SER_CTS; 1529 if (d->chan->dtr) sigon |= SER_DTR; 1530 if (d->chan->rts) sigon |= SER_RTS; 1531 CX_UNLOCK (bd); 1532 return sigon; 1533 } 1534 1535 if (sigon & SER_DTR) 1536 cx_set_dtr (d->chan, 1); 1537 if (sigoff & SER_DTR) 1538 cx_set_dtr (d->chan, 0); 1539 if (sigon & SER_RTS) 1540 cx_set_rts (d->chan, 1); 1541 if (sigoff & SER_RTS) 1542 cx_set_rts (d->chan, 0); 1543 CX_UNLOCK (bd); 1544 1545 return (0); 1546} 1547 1548static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td) 1549{ 1550 int unit; 1551 drv_t *d; 1552 1553 d = dev->si_drv1; 1554 unit = d->chan->num; 1555 1556 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n", 1557 unit, flag, mode)); 1558 1559 d->open_dev |= 0x1; 1560 1561 CX_DEBUG2 (d, ("cx_open done\n")); 1562 1563 return 0; 1564} 1565 1566static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td) 1567{ 1568 drv_t *d; 1569 1570 d = dev->si_drv1; 1571 CX_DEBUG2 (d, ("cx_close\n")); 1572 d->open_dev &= ~0x1; 1573 return 0; 1574} 1575 1576static int cx_modem_status (drv_t *d) 1577{ 1578 bdrv_t *bd = d->board->sys; 1579 int status = 0, s = splhigh (); 1580 CX_LOCK (bd); 1581 /* Already opened by someone or network interface is up? */ 1582 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1583 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running)) 1584 status = TIOCM_LE; /* always enabled while open */ 1585 1586 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR; 1587 if (cx_get_cd (d->chan)) status |= TIOCM_CD; 1588 if (cx_get_cts (d->chan)) status |= TIOCM_CTS; 1589 if (d->chan->dtr) status |= TIOCM_DTR; 1590 if (d->chan->rts) status |= TIOCM_RTS; 1591 CX_UNLOCK (bd); 1592 splx (s); 1593 return status; 1594} 1595 1596static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1597{ 1598 drv_t *d; 1599 bdrv_t *bd; 1600 cx_chan_t *c; 1601 struct serial_statistics *st; 1602 int error, s; 1603 char mask[16]; 1604 1605 d = dev->si_drv1; 1606 c = d->chan; 1607 1608 bd = d->board->sys; 1609 1610 switch (cmd) { 1611 case SERIAL_GETREGISTERED: 1612 CX_DEBUG2 (d, ("ioctl: getregistered\n")); 1613 bzero (mask, sizeof(mask)); 1614 for (s=0; s<NCX*NCHAN; ++s) 1615 if (channel [s]) 1616 mask [s/8] |= 1 << (s & 7); 1617 bcopy (mask, data, sizeof (mask)); 1618 return 0; 1619 1620 case SERIAL_GETPORT: 1621 CX_DEBUG2 (d, ("ioctl: getport\n")); 1622 s = splhigh (); 1623 CX_LOCK (bd); 1624 *(int *)data = cx_get_port (c); 1625 CX_UNLOCK (bd); 1626 splx (s); 1627 if (*(int *)data<0) 1628 return (EINVAL); 1629 else 1630 return 0; 1631 1632 case SERIAL_SETPORT: 1633 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1634 /* Only for superuser! */ 1635 error = priv_check (td, PRIV_DRIVER); 1636 if (error) 1637 return error; 1638 1639 s = splhigh (); 1640 CX_LOCK (bd); 1641 cx_set_port (c, *(int *)data); 1642 CX_UNLOCK (bd); 1643 splx (s); 1644 return 0; 1645 1646#ifndef NETGRAPH 1647 case SERIAL_GETPROTO: 1648 CX_DEBUG2 (d, ("ioctl: getproto\n")); 1649 s = splhigh (); 1650 CX_LOCK (bd); 1651 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" : 1652 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" : 1653 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp"); 1654 CX_UNLOCK (bd); 1655 splx (s); 1656 return 0; 1657 1658 case SERIAL_SETPROTO: 1659 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1660 /* Only for superuser! */ 1661 error = priv_check (td, PRIV_DRIVER); 1662 if (error) 1663 return error; 1664 if (c->mode == M_ASYNC) 1665 return EBUSY; 1666 if (d->ifp->if_drv_flags & IFF_DRV_RUNNING) 1667 return EBUSY; 1668 if (! strcmp ("cisco", (char*)data)) { 1669 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR); 1670 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1671 d->ifp->if_flags |= PP_CISCO; 1672 } else if (! strcmp ("fr", (char*)data)) { 1673 d->ifp->if_flags &= ~(PP_CISCO); 1674 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE; 1675 } else if (! strcmp ("ppp", (char*)data)) { 1676 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE); 1677 d->ifp->if_flags &= ~(PP_CISCO); 1678 } else 1679 return EINVAL; 1680 return 0; 1681 1682 case SERIAL_GETKEEPALIVE: 1683 CX_DEBUG2 (d, ("ioctl: getkeepalive\n")); 1684 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1685 (d->ifp->if_flags & PP_CISCO) || 1686 (c->mode == M_ASYNC)) 1687 return EINVAL; 1688 s = splhigh (); 1689 CX_LOCK (bd); 1690 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0; 1691 CX_UNLOCK (bd); 1692 splx (s); 1693 return 0; 1694 1695 case SERIAL_SETKEEPALIVE: 1696 CX_DEBUG2 (d, ("ioctl: setkeepalive\n")); 1697 /* Only for superuser! */ 1698 error = priv_check (td, PRIV_DRIVER); 1699 if (error) 1700 return error; 1701 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1702 (d->ifp->if_flags & PP_CISCO)) 1703 return EINVAL; 1704 s = splhigh (); 1705 CX_LOCK (bd); 1706 if (*(int*)data) 1707 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1708 else 1709 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE; 1710 CX_UNLOCK (bd); 1711 splx (s); 1712 return 0; 1713#endif /*NETGRAPH*/ 1714 1715 case SERIAL_GETMODE: 1716 CX_DEBUG2 (d, ("ioctl: getmode\n")); 1717 s = splhigh (); 1718 CX_LOCK (bd); 1719 *(int*)data = (c->mode == M_ASYNC) ? 1720 SERIAL_ASYNC : SERIAL_HDLC; 1721 CX_UNLOCK (bd); 1722 splx (s); 1723 return 0; 1724 1725 case SERIAL_SETMODE: 1726 CX_DEBUG2 (d, ("ioctl: setmode\n")); 1727 /* Only for superuser! */ 1728 error = priv_check (td, PRIV_DRIVER); 1729 if (error) 1730 return error; 1731 1732 /* Somebody is waiting for carrier? */ 1733 if (d->lock) 1734 return EBUSY; 1735 /* /dev/ttyXX is already opened by someone? */ 1736 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1737 (d->open_dev|0x2)) 1738 return EBUSY; 1739 /* Network interface is up? 1740 * Cannot change to async mode. */ 1741 if (c->mode != M_ASYNC && d->running && 1742 (*(int*)data == SERIAL_ASYNC)) 1743 return EBUSY; 1744 1745 s = splhigh (); 1746 CX_LOCK (bd); 1747 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) { 1748 cx_set_mode (c, M_ASYNC); 1749 cx_enable_receive (c, 0); 1750 cx_enable_transmit (c, 0); 1751 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) { 1752 if (d->ifp->if_flags & IFF_DEBUG) 1753 c->debug = c->debug_shadow; 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 = priv_check (td, PRIV_DRIVER); 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 = priv_check (td, PRIV_DRIVER); 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 = priv_check (td, PRIV_DRIVER); 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 = priv_check (td, PRIV_DRIVER); 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 = priv_check (td, PRIV_DRIVER); 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 = priv_check (td, PRIV_DRIVER); 1918 if (error) 1919 return error; 1920 s = splhigh (); 1921 CX_LOCK (bd); 1922#ifndef NETGRAPH 1923 if (c->mode == M_ASYNC) { 1924 c->debug = *(int*)data; 1925 } else { 1926 /* 1927 * The debug_shadow is always greater than zero for 1928 * logic simplicity. For switching debug off the 1929 * IFF_DEBUG is responsible (for !M_ASYNC mode). 1930 */ 1931 c->debug_shadow = (*(int*)data) ? (*(int*)data) : 1; 1932 if (d->ifp->if_flags & IFF_DEBUG) 1933 c->debug = c->debug_shadow; 1934 } 1935#else 1936 c->debug = *(int*)data; 1937#endif 1938 CX_UNLOCK (bd); 1939 splx (s); 1940 return 0; 1941 } 1942 1943 switch (cmd) { 1944 case TIOCSDTR: /* Set DTR */ 1945 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n")); 1946 s = splhigh (); 1947 CX_LOCK (bd); 1948 cx_set_dtr (c, 1); 1949 CX_UNLOCK (bd); 1950 splx (s); 1951 return 0; 1952 1953 case TIOCCDTR: /* Clear DTR */ 1954 CX_DEBUG2 (d, ("ioctl: tioccdtr\n")); 1955 s = splhigh (); 1956 CX_LOCK (bd); 1957 cx_set_dtr (c, 0); 1958 CX_UNLOCK (bd); 1959 splx (s); 1960 return 0; 1961 1962 case TIOCMSET: /* Set DTR/RTS */ 1963 CX_DEBUG2 (d, ("ioctl: tiocmset\n")); 1964 s = splhigh (); 1965 CX_LOCK (bd); 1966 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0); 1967 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0); 1968 CX_UNLOCK (bd); 1969 splx (s); 1970 return 0; 1971 1972 case TIOCMBIS: /* Add DTR/RTS */ 1973 CX_DEBUG2 (d, ("ioctl: tiocmbis\n")); 1974 s = splhigh (); 1975 CX_LOCK (bd); 1976 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1); 1977 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1); 1978 CX_UNLOCK (bd); 1979 splx (s); 1980 return 0; 1981 1982 case TIOCMBIC: /* Clear DTR/RTS */ 1983 CX_DEBUG2 (d, ("ioctl: tiocmbic\n")); 1984 s = splhigh (); 1985 CX_LOCK (bd); 1986 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0); 1987 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0); 1988 CX_UNLOCK (bd); 1989 splx (s); 1990 return 0; 1991 1992 case TIOCMGET: /* Get modem status */ 1993 CX_DEBUG2 (d, ("ioctl: tiocmget\n")); 1994 *(int*)data = cx_modem_status (d); 1995 return 0; 1996 1997 } 1998 1999 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd)); 2000 return ENOTTY; 2001} 2002 2003void cx_softintr (void *unused) 2004{ 2005 drv_t *d; 2006 bdrv_t *bd; 2007 async_q *q; 2008 int i, s, ic, k; 2009 while (MY_SOFT_INTR) { 2010 MY_SOFT_INTR = 0; 2011 for (i=0; i<NCX*NCHAN; ++i) { 2012 d = channel [i]; 2013 if (!d || !d->chan || d->chan->type == T_NONE 2014 || d->chan->mode != M_ASYNC || !d->tty 2015 || !d->tty->t_dev) 2016 continue; 2017 bd = d->board->sys; 2018 s = splhigh (); 2019 CX_LOCK (bd); 2020 if (d->intr_action & CX_READ) { 2021 q = &(d->aqueue); 2022 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) { 2023 k = AQ_GSZ(q); 2024 if (d->tty->t_rawq.c_cc + k > 2025 d->tty->t_ihiwat 2026 && (d->tty->t_cflag & CRTS_IFLOW 2027 || d->tty->t_iflag & IXOFF) 2028 && !(d->tty->t_state & TS_TBLOCK)) 2029 ttyblock(d->tty); 2030 d->tty->t_rawcc += k; 2031 while (k>0) { 2032 k--; 2033 AQ_POP (q, ic); 2034 CX_UNLOCK (bd); 2035 splx (s); 2036 putc (ic, &d->tty->t_rawq); 2037 s = splhigh (); 2038 CX_LOCK (bd); 2039 } 2040 ttwakeup(d->tty); 2041 if (d->tty->t_state & TS_TTSTOP 2042 && (d->tty->t_iflag & IXANY 2043 || d->tty->t_cc[VSTART] == 2044 d->tty->t_cc[VSTOP])) { 2045 d->tty->t_state &= ~TS_TTSTOP; 2046 d->tty->t_lflag &= ~FLUSHO; 2047 d->intr_action |= CX_WRITE; 2048 } 2049 } else { 2050 while (q->end != q->beg) { 2051 AQ_POP (q, ic); 2052 CX_UNLOCK (bd); 2053 splx (s); 2054 ttyld_rint (d->tty, ic); 2055 s = splhigh (); 2056 CX_LOCK (bd); 2057 } 2058 } 2059 d->intr_action &= ~CX_READ; 2060 } 2061 splx (s); 2062 CX_UNLOCK (bd); 2063 2064 s = splhigh (); 2065 CX_LOCK (bd); 2066 if (d->intr_action & CX_WRITE) { 2067 if (d->tty->t_line) 2068 ttyld_start (d->tty); 2069 else 2070 cx_oproc (d->tty); 2071 d->intr_action &= ~CX_WRITE; 2072 } 2073 CX_UNLOCK (bd); 2074 splx (s); 2075 2076 } 2077 } 2078} 2079 2080/* 2081 * Fill transmitter buffer with data. 2082 */ 2083static void cx_oproc (struct tty *tp) 2084{ 2085 int s, k; 2086 drv_t *d; 2087 bdrv_t *bd; 2088 static u_char buf[DMABUFSZ]; 2089 u_char *p; 2090 u_short len = 0, sublen = 0; 2091 2092 d = tp->t_sc; 2093 bd = d->board->sys; 2094 2095 CX_DEBUG2 (d, ("cx_oproc\n")); 2096 2097 s = splhigh (); 2098 CX_LOCK (bd); 2099 2100 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts) 2101 cx_set_rts (d->chan, 0); 2102 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts) 2103 cx_set_rts (d->chan, 1); 2104 2105 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) { 2106 /* Start transmitter. */ 2107 cx_enable_transmit (d->chan, 1); 2108 2109 /* Is it busy? */ 2110 if (! cx_buf_free (d->chan)) { 2111 tp->t_state |= TS_BUSY; 2112 CX_UNLOCK (bd); 2113 splx (s); 2114 return; 2115 } 2116 if (tp->t_iflag & IXOFF) { 2117 p = (buf + (DMABUFSZ/2)); 2118 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2119 k = sublen; 2120 while (k--) { 2121 /* Send XON/XOFF out of band. */ 2122 if (*p == tp->t_cc[VSTOP]) { 2123 cx_xflow_ctl (d->chan, 0); 2124 p++; 2125 continue; 2126 } 2127 if (*p == tp->t_cc[VSTART]) { 2128 cx_xflow_ctl (d->chan, 1); 2129 p++; 2130 continue; 2131 } 2132 buf[len] = *p; 2133 len++; 2134 p++; 2135 } 2136 } else { 2137 p = buf; 2138 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2139 } 2140 if (len) { 2141 cx_send_packet (d->chan, buf, len, 0); 2142 tp->t_state |= TS_BUSY; 2143 d->atimeout = 10; 2144 CX_DEBUG2 (d, ("out %d bytes\n", len)); 2145 } 2146 } 2147 ttwwakeup (tp); 2148 CX_UNLOCK (bd); 2149 splx (s); 2150} 2151 2152static int cx_param (struct tty *tp, struct termios *t) 2153{ 2154 drv_t *d; 2155 bdrv_t *bd; 2156 int s, bits, parity; 2157 2158 d = tp->t_sc; 2159 bd = d->board->sys; 2160 2161 s = splhigh (); 2162 CX_LOCK (bd); 2163 if (t->c_ospeed == 0) { 2164 /* Clear DTR and RTS. */ 2165 cx_set_dtr (d->chan, 0); 2166 CX_UNLOCK (bd); 2167 splx (s); 2168 CX_DEBUG2 (d, ("cx_param (hangup)\n")); 2169 return 0; 2170 } 2171 CX_DEBUG2 (d, ("cx_param\n")); 2172 2173 /* Check requested parameters. */ 2174 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) { 2175 CX_UNLOCK (bd); 2176 splx (s); 2177 return EINVAL; 2178 } 2179 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) { 2180 CX_UNLOCK (bd); 2181 splx (s); 2182 return EINVAL; 2183 } 2184 2185 /* And copy them to tty and channel structures. */ 2186 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed; 2187 tp->t_cflag = t->c_cflag; 2188 2189 /* Set character length and parity mode. */ 2190 switch (t->c_cflag & CSIZE) { 2191 default: 2192 case CS8: bits = 8; break; 2193 case CS7: bits = 7; break; 2194 case CS6: bits = 6; break; 2195 case CS5: bits = 5; break; 2196 } 2197 2198 parity = ((t->c_cflag & PARENB) ? 1 : 0) * 2199 (1 + ((t->c_cflag & PARODD) ? 0 : 1)); 2200 2201 /* Set current channel number. */ 2202 if (! d->chan->dtr) 2203 cx_set_dtr (d->chan, 1); 2204 2205 ttyldoptim (tp); 2206 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB), 2207 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS), 2208 (t->c_iflag & IXON), (t->c_iflag & IXANY), 2209 t->c_cc[VSTART], t->c_cc[VSTOP]); 2210 CX_UNLOCK (bd); 2211 splx (s); 2212 return 0; 2213} 2214 2215/* 2216 * Stop output on a line 2217 */ 2218static void cx_stop (struct tty *tp, int flag) 2219{ 2220 drv_t *d; 2221 bdrv_t *bd; 2222 int s; 2223 2224 d = tp->t_sc; 2225 bd = d->board->sys; 2226 2227 s = splhigh (); 2228 CX_LOCK (bd); 2229 if (tp->t_state & TS_BUSY) { 2230 /* Stop transmitter */ 2231 CX_DEBUG2 (d, ("cx_stop\n")); 2232 cx_transmitter_ctl (d->chan, 0); 2233 } 2234 CX_UNLOCK (bd); 2235 splx (s); 2236} 2237 2238/* 2239 * Process the (delayed) carrier signal setup. 2240 */ 2241static void cx_carrier (void *arg) 2242{ 2243 drv_t *d = arg; 2244 bdrv_t *bd = d->board->sys; 2245 cx_chan_t *c = d->chan; 2246 int s, cd; 2247 2248 s = splhigh (); 2249 CX_LOCK (bd); 2250 cd = cx_get_cd (c); 2251 if (d->cd != cd) { 2252 if (cd) { 2253 CX_DEBUG (d, ("carrier on\n")); 2254 d->cd = 1; 2255 CX_UNLOCK (bd); 2256 splx (s); 2257 if (d->tty) 2258 ttyld_modem(d->tty, 1); 2259 } else { 2260 CX_DEBUG (d, ("carrier loss\n")); 2261 d->cd = 0; 2262 CX_UNLOCK (bd); 2263 splx (s); 2264 if (d->tty) 2265 ttyld_modem(d->tty, 0); 2266 } 2267 } else { 2268 CX_UNLOCK (bd); 2269 splx (s); 2270 } 2271} 2272 2273/* 2274 * Modem signal callback function. 2275 */ 2276static void cx_modem (cx_chan_t *c) 2277{ 2278 drv_t *d = c->sys; 2279 2280 if (!d || c->mode != M_ASYNC) 2281 return; 2282 /* Handle carrier detect/loss. */ 2283 /* Carrier changed - delay processing DCD for a while 2284 * to give both sides some time to initialize. */ 2285 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d); 2286} 2287 2288#ifdef NETGRAPH 2289static int ng_cx_constructor (node_p node) 2290{ 2291 drv_t *d = NG_NODE_PRIVATE (node); 2292 CX_DEBUG (d, ("Constructor\n")); 2293 return EINVAL; 2294} 2295 2296static int ng_cx_newhook (node_p node, hook_p hook, const char *name) 2297{ 2298 int s; 2299 drv_t *d = NG_NODE_PRIVATE (node); 2300 bdrv_t *bd = d->board->sys; 2301 2302 if (d->chan->mode == M_ASYNC) 2303 return EINVAL; 2304 2305 /* Attach debug hook */ 2306 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) { 2307 NG_HOOK_SET_PRIVATE (hook, NULL); 2308 d->debug_hook = hook; 2309 return 0; 2310 } 2311 2312 /* Check for raw hook */ 2313 if (strcmp (name, NG_CX_HOOK_RAW) != 0) 2314 return EINVAL; 2315 2316 NG_HOOK_SET_PRIVATE (hook, d); 2317 d->hook = hook; 2318 s = splhigh (); 2319 CX_LOCK (bd); 2320 cx_up (d); 2321 CX_UNLOCK (bd); 2322 splx (s); 2323 return 0; 2324} 2325 2326static int print_modems (char *s, cx_chan_t *c, int need_header) 2327{ 2328 int status = cx_modem_status (c->sys); 2329 int length = 0; 2330 2331 if (need_header) 2332 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n"); 2333 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n", 2334 status & TIOCM_LE ? "On" : "-", 2335 status & TIOCM_DTR ? "On" : "-", 2336 status & TIOCM_DSR ? "On" : "-", 2337 status & TIOCM_RTS ? "On" : "-", 2338 status & TIOCM_CTS ? "On" : "-", 2339 status & TIOCM_CD ? "On" : "-"); 2340 return length; 2341} 2342 2343static int print_stats (char *s, cx_chan_t *c, int need_header) 2344{ 2345 int length = 0; 2346 2347 if (need_header) 2348 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n"); 2349 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n", 2350 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts, 2351 c->ierrs, c->obytes, c->opkts, c->oerrs); 2352 return length; 2353} 2354 2355static int print_chan (char *s, cx_chan_t *c) 2356{ 2357 drv_t *d = c->sys; 2358 int length = 0; 2359 2360 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num); 2361 if (d->chan->debug) 2362 length += sprintf (s + length, " debug=%d", d->chan->debug); 2363 2364 if (cx_get_baud (c)) 2365 length += sprintf (s + length, " %ld", cx_get_baud (c)); 2366 else 2367 length += sprintf (s + length, " extclock"); 2368 2369 if (c->mode == M_HDLC) { 2370 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off"); 2371 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off"); 2372 } 2373 2374 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n"); 2375 return length; 2376} 2377 2378static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook) 2379{ 2380 drv_t *d = NG_NODE_PRIVATE (node); 2381 struct ng_mesg *msg; 2382 struct ng_mesg *resp = NULL; 2383 int error = 0; 2384 2385 if (!d) 2386 return EINVAL; 2387 2388 CX_DEBUG (d, ("Rcvmsg\n")); 2389 NGI_GET_MSG (item, msg); 2390 switch (msg->header.typecookie) { 2391 default: 2392 error = EINVAL; 2393 break; 2394 2395 case NGM_CX_COOKIE: 2396 printf ("Don't forget to implement\n"); 2397 error = EINVAL; 2398 break; 2399 2400 case NGM_GENERIC_COOKIE: 2401 switch (msg->header.cmd) { 2402 default: 2403 error = EINVAL; 2404 break; 2405 2406 case NGM_TEXT_STATUS: { 2407 char *s; 2408 int l = 0; 2409 int dl = sizeof (struct ng_mesg) + 730; 2410 2411 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT); 2412 if (! resp) { 2413 error = ENOMEM; 2414 break; 2415 } 2416 bzero (resp, dl); 2417 s = (resp)->data; 2418 l += print_chan (s + l, d->chan); 2419 l += print_stats (s + l, d->chan, 1); 2420 l += print_modems (s + l, d->chan, 1); 2421 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRLEN); 2422 } 2423 break; 2424 } 2425 break; 2426 } 2427 NG_RESPOND_MSG (error, node, item, resp); 2428 NG_FREE_MSG (msg); 2429 return error; 2430} 2431 2432static int ng_cx_rcvdata (hook_p hook, item_p item) 2433{ 2434 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook)); 2435 struct mbuf *m; 2436 struct ng_tag_prio *ptag; 2437 bdrv_t *bd; 2438 struct ifqueue *q; 2439 int s; 2440 2441 NGI_GET_M (item, m); 2442 NG_FREE_ITEM (item); 2443 if (! NG_HOOK_PRIVATE (hook) || ! d) { 2444 NG_FREE_M (m); 2445 return ENETDOWN; 2446 } 2447 2448 bd = d->board->sys; 2449 /* Check for high priority data */ 2450 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE, 2451 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) ) 2452 q = &d->hi_queue; 2453 else 2454 q = &d->lo_queue; 2455 2456 s = splhigh (); 2457 CX_LOCK (bd); 2458 IF_LOCK (q); 2459 if (_IF_QFULL (q)) { 2460 _IF_DROP (q); 2461 IF_UNLOCK (q); 2462 CX_UNLOCK (bd); 2463 splx (s); 2464 NG_FREE_M (m); 2465 return ENOBUFS; 2466 } 2467 _IF_ENQUEUE (q, m); 2468 IF_UNLOCK (q); 2469 cx_start (d); 2470 CX_UNLOCK (bd); 2471 splx (s); 2472 return 0; 2473} 2474 2475static int ng_cx_rmnode (node_p node) 2476{ 2477 drv_t *d = NG_NODE_PRIVATE (node); 2478 bdrv_t *bd; 2479 2480 CX_DEBUG (d, ("Rmnode\n")); 2481 if (d && d->running) { 2482 int s = splhigh (); 2483 bd = d->board->sys; 2484 CX_LOCK (bd); 2485 cx_down (d); 2486 CX_UNLOCK (bd); 2487 splx (s); 2488 } 2489#ifdef KLD_MODULE 2490 if (node->nd_flags & NGF_REALLY_DIE) { 2491 NG_NODE_SET_PRIVATE (node, NULL); 2492 NG_NODE_UNREF (node); 2493 } 2494 NG_NODE_REVIVE(node); /* Persistant node */ 2495#endif 2496 return 0; 2497} 2498 2499static void ng_cx_watchdog (void *arg) 2500{ 2501 drv_t *d = arg; 2502 2503 if (d->timeout == 1) 2504 cx_watchdog (d); 2505 if (d->timeout) 2506 d->timeout--; 2507 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2508} 2509 2510static int ng_cx_connect (hook_p hook) 2511{ 2512 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2513 2514 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2515 return 0; 2516} 2517 2518static int ng_cx_disconnect (hook_p hook) 2519{ 2520 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2521 bdrv_t *bd = d->board->sys; 2522 int s; 2523 2524 s = splhigh (); 2525 CX_LOCK (bd); 2526 if (NG_HOOK_PRIVATE (hook)) 2527 cx_down (d); 2528 CX_UNLOCK (bd); 2529 splx (s); 2530 /* If we were wait it than it reasserted now, just stop it. */ 2531 if (!callout_drain (&d->timeout_handle)) 2532 callout_stop (&d->timeout_handle); 2533 return 0; 2534} 2535#endif /*NETGRAPH*/ 2536 2537static int cx_modevent (module_t mod, int type, void *unused) 2538{ 2539 static int load_count = 0; 2540 2541 if (cx_mpsafenet) 2542 cx_cdevsw.d_flags &= ~D_NEEDGIANT; 2543 2544 switch (type) { 2545 case MOD_LOAD: 2546#ifdef NETGRAPH 2547 if (ng_newtype (&typestruct)) 2548 printf ("Failed to register ng_cx\n"); 2549#endif 2550 ++load_count; 2551 2552 callout_init (&timeout_handle, cx_mpsafenet?CALLOUT_MPSAFE:0); 2553 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 2554 /* Software interrupt. */ 2555 swi_add(&tty_intr_event, "cx", cx_softintr, NULL, SWI_TTY, 2556 (cx_mpsafenet?INTR_MPSAFE:0), &cx_fast_ih); 2557 break; 2558 case MOD_UNLOAD: 2559 if (load_count == 1) { 2560 printf ("Removing device entry for Sigma\n"); 2561#ifdef NETGRAPH 2562 ng_rmtype (&typestruct); 2563#endif 2564 } 2565 /* If we were wait it than it reasserted now, just stop it. */ 2566 if (!callout_drain (&timeout_handle)) 2567 callout_stop (&timeout_handle); 2568 swi_remove (cx_fast_ih); 2569 --load_count; 2570 break; 2571 case MOD_SHUTDOWN: 2572 break; 2573 } 2574 return 0; 2575} 2576 2577#ifdef NETGRAPH 2578static struct ng_type typestruct = { 2579 .version = NG_ABI_VERSION, 2580 .name = NG_CX_NODE_TYPE, 2581 .constructor = ng_cx_constructor, 2582 .rcvmsg = ng_cx_rcvmsg, 2583 .shutdown = ng_cx_rmnode, 2584 .newhook = ng_cx_newhook, 2585 .connect = ng_cx_connect, 2586 .rcvdata = ng_cx_rcvdata, 2587 .disconnect = ng_cx_disconnect, 2588}; 2589#endif /*NETGRAPH*/ 2590 2591#ifdef NETGRAPH 2592MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 2593#else 2594MODULE_DEPEND (isa_cx, sppp, 1, 1, 1); 2595#endif 2596DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL); 2597MODULE_VERSION (cx, 1); 2598