if_cx.c revision 188768
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 188768 2009-02-19 00:06:01Z rwatson $"); 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 86#define CX_LOCK(_bd) mtx_lock (&(_bd)->cx_mtx) 87#define CX_UNLOCK(_bd) mtx_unlock (&(_bd)->cx_mtx) 88#define CX_LOCK_ASSERT(_bd) mtx_assert (&(_bd)->cx_mtx, MA_OWNED) 89 90typedef struct _async_q { 91 int beg; 92 int end; 93 #define BF_SZ 14400 94 int buf[BF_SZ+1]; 95} async_q; 96 97#define AQ_GSZ(q) ((BF_SZ + (q)->end - (q)->beg)%BF_SZ) 98#define AQ_PUSH(q,c) {*((q)->buf + (q)->end) = c;\ 99 (q)->end = ((q)->end + 1)%BF_SZ;} 100#define AQ_POP(q,c) {c = *((q)->buf + (q)->beg);\ 101 (q)->beg = ((q)->beg + 1)%BF_SZ;} 102 103static void cx_identify __P((driver_t *, device_t)); 104static int cx_probe __P((device_t)); 105static int cx_attach __P((device_t)); 106static int cx_detach __P((device_t)); 107static t_open_t cx_topen; 108static t_modem_t cx_tmodem; 109static t_close_t cx_tclose; 110 111static device_method_t cx_isa_methods [] = { 112 DEVMETHOD(device_identify, cx_identify), 113 DEVMETHOD(device_probe, cx_probe), 114 DEVMETHOD(device_attach, cx_attach), 115 DEVMETHOD(device_detach, cx_detach), 116 {0, 0} 117}; 118 119typedef struct _cx_dma_mem_t { 120 unsigned long phys; 121 void *virt; 122 size_t size; 123 bus_dma_tag_t dmat; 124 bus_dmamap_t mapp; 125} cx_dma_mem_t; 126 127typedef struct _drv_t { 128 char name [8]; 129 cx_chan_t *chan; 130 cx_board_t *board; 131 cx_dma_mem_t dmamem; 132 struct tty *tty; 133 struct callout dcd_timeout_handle; 134 unsigned callout; 135 unsigned lock; 136 int open_dev; 137 int cd; 138 int running; 139#ifdef NETGRAPH 140 char nodename [NG_NODELEN+1]; 141 hook_p hook; 142 hook_p debug_hook; 143 node_p node; 144 struct ifqueue lo_queue; 145 struct ifqueue hi_queue; 146 short timeout; 147 struct callout timeout_handle; 148#else 149 struct ifqueue queue; 150 struct ifnet *ifp; 151#endif 152 struct cdev *devt; 153 async_q aqueue; 154#define CX_READ 1 155#define CX_WRITE 2 156 int intr_action; 157 short atimeout; 158} drv_t; 159 160typedef struct _bdrv_t { 161 cx_board_t *board; 162 struct resource *base_res; 163 struct resource *drq_res; 164 struct resource *irq_res; 165 int base_rid; 166 int drq_rid; 167 int irq_rid; 168 void *intrhand; 169 drv_t channel [NCHAN]; 170 struct mtx cx_mtx; 171} bdrv_t; 172 173static driver_t cx_isa_driver = { 174 "cx", 175 cx_isa_methods, 176 sizeof (bdrv_t), 177}; 178 179static devclass_t cx_devclass; 180 181extern long csigma_fw_len; 182extern const char *csigma_fw_version; 183extern const char *csigma_fw_date; 184extern const char *csigma_fw_copyright; 185extern const cr_dat_tst_t csigma_fw_tvec[]; 186extern const u_char csigma_fw_data[]; 187static void cx_oproc (struct tty *tp); 188static int cx_param (struct tty *tp, struct termios *t); 189static void cx_stop (struct tty *tp, int flag); 190static void cx_receive (cx_chan_t *c, char *data, int len); 191static void cx_transmit (cx_chan_t *c, void *attachment, int len); 192static void cx_error (cx_chan_t *c, int data); 193static void cx_modem (cx_chan_t *c); 194static void cx_up (drv_t *d); 195static void cx_start (drv_t *d); 196static void cx_softintr (void *); 197static void *cx_fast_ih; 198static void cx_down (drv_t *d); 199static void cx_watchdog (drv_t *d); 200static void cx_carrier (void *arg); 201 202#ifdef NETGRAPH 203extern struct ng_type typestruct; 204#else 205static void cx_ifstart (struct ifnet *ifp); 206static void cx_tlf (struct sppp *sp); 207static void cx_tls (struct sppp *sp); 208static void cx_ifwatchdog (struct ifnet *ifp); 209static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data); 210static void cx_initialize (void *softc); 211#endif 212 213static cx_board_t *adapter [NCX]; 214static drv_t *channel [NCX*NCHAN]; 215static struct callout led_timo [NCX]; 216static struct callout timeout_handle; 217 218static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td); 219static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td); 220static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td); 221static struct cdevsw cx_cdevsw = { 222 .d_version = D_VERSION, 223 .d_open = cx_open, 224 .d_close = cx_close, 225 .d_ioctl = cx_ioctl, 226 .d_name = "cx", 227 .d_flags = D_TTY, 228}; 229 230static int MY_SOFT_INTR; 231 232/* 233 * Print the mbuf chain, for debug purposes only. 234 */ 235static void printmbuf (struct mbuf *m) 236{ 237 printf ("mbuf:"); 238 for (; m; m=m->m_next) { 239 if (m->m_flags & M_PKTHDR) 240 printf (" HDR %d:", m->m_pkthdr.len); 241 if (m->m_flags & M_EXT) 242 printf (" EXT:"); 243 printf (" %d", m->m_len); 244 } 245 printf ("\n"); 246} 247 248/* 249 * Make an mbuf from data. 250 */ 251static struct mbuf *makembuf (void *buf, u_int len) 252{ 253 struct mbuf *m, *o, *p; 254 255 MGETHDR (m, M_DONTWAIT, MT_DATA); 256 257 if (! m) 258 return 0; 259 260 if (len >= MINCLSIZE) 261 MCLGET (m, M_DONTWAIT); 262 263 m->m_pkthdr.len = len; 264 m->m_len = 0; 265 266 p = m; 267 while (len) { 268 u_int n = M_TRAILINGSPACE (p); 269 if (n > len) 270 n = len; 271 if (! n) { 272 /* Allocate new mbuf. */ 273 o = p; 274 MGET (p, M_DONTWAIT, MT_DATA); 275 if (! p) { 276 m_freem (m); 277 return 0; 278 } 279 if (len >= MINCLSIZE) 280 MCLGET (p, M_DONTWAIT); 281 p->m_len = 0; 282 o->m_next = p; 283 284 n = M_TRAILINGSPACE (p); 285 if (n > len) 286 n = len; 287 } 288 bcopy (buf, mtod (p, caddr_t) + p->m_len, n); 289 290 p->m_len += n; 291 buf = n + (char*) buf; 292 len -= n; 293 } 294 return m; 295} 296 297/* 298 * Recover after lost transmit interrupts. 299 */ 300static void cx_timeout (void *arg) 301{ 302 drv_t *d; 303 int s, i, k; 304 305 for (i = 0; i < NCX; i++) { 306 if (adapter[i] == NULL) 307 continue; 308 for (k = 0; k < NCHAN; ++k) { 309 d = channel[i * NCHAN + k]; 310 if (! d) 311 continue; 312 s = splhigh (); 313 CX_LOCK ((bdrv_t *)d->board->sys); 314 if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) { 315 d->tty->t_state &= ~TS_BUSY; 316 if (d->tty->t_dev) { 317 d->intr_action |= CX_WRITE; 318 MY_SOFT_INTR = 1; 319 swi_sched (cx_fast_ih, 0); 320 } 321 CX_DEBUG (d, ("cx_timeout\n")); 322 } 323 if (d->atimeout) 324 d->atimeout--; 325 CX_UNLOCK ((bdrv_t *)d->board->sys); 326 splx (s); 327 } 328 } 329 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 330} 331 332static void cx_led_off (void *arg) 333{ 334 cx_board_t *b = arg; 335 bdrv_t *bd = b->sys; 336 int s; 337 338 s = splhigh (); 339 CX_LOCK (bd); 340 cx_led (b, 0); 341 CX_UNLOCK (bd); 342 splx (s); 343} 344 345/* 346 * Activate interrupt handler from DDK. 347 */ 348static void cx_intr (void *arg) 349{ 350 bdrv_t *bd = arg; 351 cx_board_t *b = bd->board; 352#ifndef NETGRAPH 353 int i; 354#endif 355 int s = splhigh (); 356 357 CX_LOCK (bd); 358 /* Turn LED on. */ 359 cx_led (b, 1); 360 361 cx_int_handler (b); 362 363 /* Turn LED off 50 msec later. */ 364 callout_reset (&led_timo[b->num], hz/20, cx_led_off, b); 365 CX_UNLOCK (bd); 366 splx (s); 367 368#ifndef NETGRAPH 369 /* Pass packets in a lock-free state */ 370 for (i = 0; i < NCHAN && b->chan[i].type; i++) { 371 drv_t *d = b->chan[i].sys; 372 struct mbuf *m; 373 if (!d || !d->running) 374 continue; 375 while (_IF_QLEN(&d->queue)) { 376 IF_DEQUEUE (&d->queue,m); 377 if (!m) 378 continue; 379 sppp_input (d->ifp, m); 380 } 381 } 382#endif 383} 384 385static int probe_irq (cx_board_t *b, int irq) 386{ 387 int mask, busy, cnt; 388 389 /* Clear pending irq, if any. */ 390 cx_probe_irq (b, -irq); 391 DELAY (100); 392 for (cnt=0; cnt<5; ++cnt) { 393 /* Get the mask of pending irqs, assuming they are busy. 394 * Activate the adapter on given irq. */ 395 busy = cx_probe_irq (b, irq); 396 DELAY (100); 397 398 /* Get the mask of active irqs. 399 * Deactivate our irq. */ 400 mask = cx_probe_irq (b, -irq); 401 DELAY (100); 402 if ((mask & ~busy) == 1 << irq) { 403 cx_probe_irq (b, 0); 404 /* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n", 405 b->num, irq, mask, busy); */ 406 return 1; 407 } 408 } 409 /* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n", 410 b->num, irq, mask, busy); */ 411 cx_probe_irq (b, 0); 412 return 0; 413} 414 415static short porttab [] = { 416 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 417 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 418}; 419static char dmatab [] = { 7, 6, 5, 0 }; 420static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 }; 421 422static int cx_is_free_res (device_t dev, int rid, int type, u_long start, 423 u_long end, u_long count) 424{ 425 struct resource *res; 426 427 if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count, 428 RF_ALLOCATED))) 429 return 0; 430 431 bus_release_resource (dev, type, rid, res); 432 433 return 1; 434} 435 436static void cx_identify (driver_t *driver, device_t dev) 437{ 438 u_long iobase, rescount; 439 int devcount; 440 device_t *devices; 441 device_t child; 442 devclass_t my_devclass; 443 int i, k; 444 445 if ((my_devclass = devclass_find ("cx")) == NULL) 446 return; 447 448 devclass_get_devices (my_devclass, &devices, &devcount); 449 450 if (devcount == 0) { 451 /* We should find all devices by our self. We could alter other 452 * devices, but we don't have a choise 453 */ 454 for (i = 0; (iobase = porttab [i]) != 0; i++) { 455 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 456 iobase, iobase + NPORT, NPORT)) 457 continue; 458 if (cx_probe_board (iobase, -1, -1) == 0) 459 continue; 460 461 devcount++; 462 463 child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx", 464 -1); 465 466 if (child == NULL) 467 return; 468 469 device_set_desc_copy (child, "Cronyx Sigma"); 470 device_set_driver (child, driver); 471 bus_set_resource (child, SYS_RES_IOPORT, 0, 472 iobase, NPORT); 473 474 if (devcount >= NCX) 475 break; 476 } 477 } else { 478 static short porttab [] = { 479 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 480 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 481 }; 482 /* Lets check user choise. 483 */ 484 for (k = 0; k < devcount; k++) { 485 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 486 &iobase, &rescount) != 0) 487 continue; 488 489 for (i = 0; porttab [i] != 0; i++) { 490 if (porttab [i] != iobase) 491 continue; 492 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 493 iobase, iobase + NPORT, NPORT)) 494 continue; 495 if (cx_probe_board (iobase, -1, -1) == 0) 496 continue; 497 porttab [i] = -1; 498 device_set_desc_copy (devices[k], "Cronyx Sigma"); 499 break; 500 } 501 502 if (porttab [i] == 0) { 503 device_delete_child ( 504 device_get_parent (devices[k]), 505 devices [k]); 506 devices[k] = 0; 507 continue; 508 } 509 } 510 for (k = 0; k < devcount; k++) { 511 if (devices[k] == 0) 512 continue; 513 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 514 &iobase, &rescount) == 0) 515 continue; 516 for (i = 0; (iobase = porttab [i]) != 0; i++) { 517 if (porttab [i] == -1) { 518 continue; 519 } 520 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 521 iobase, iobase + NPORT, NPORT)) 522 continue; 523 if (cx_probe_board (iobase, -1, -1) == 0) 524 continue; 525 526 bus_set_resource (devices[k], SYS_RES_IOPORT, 0, 527 iobase, NPORT); 528 porttab [i] = -1; 529 device_set_desc_copy (devices[k], "Cronyx Sigma"); 530 break; 531 } 532 if (porttab [i] == 0) { 533 device_delete_child ( 534 device_get_parent (devices[k]), 535 devices [k]); 536 } 537 } 538 free (devices, M_TEMP); 539 } 540 541 return; 542} 543 544static int cx_probe (device_t dev) 545{ 546 int unit = device_get_unit (dev); 547 int i; 548 u_long iobase, rescount; 549 550 if (!device_get_desc (dev) || 551 strcmp (device_get_desc (dev), "Cronyx Sigma")) 552 return ENXIO; 553 554 if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) { 555 printf ("cx%d: Couldn't get IOPORT\n", unit); 556 return ENXIO; 557 } 558 559 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 560 iobase, iobase + NPORT, NPORT)) { 561 printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase); 562 return ENXIO; 563 } 564 565 for (i = 0; porttab [i] != 0; i++) { 566 if (porttab [i] == iobase) { 567 porttab [i] = -1; 568 break; 569 } 570 } 571 572 if (porttab [i] == 0) { 573 return ENXIO; 574 } 575 576 if (!cx_probe_board (iobase, -1, -1)) { 577 printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase); 578 return ENXIO; 579 } 580 581 return 0; 582} 583 584static void 585cx_bus_dmamap_addr (void *arg, bus_dma_segment_t *segs, int nseg, int error) 586{ 587 unsigned long *addr; 588 589 if (error) 590 return; 591 592 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 593 addr = arg; 594 *addr = segs->ds_addr; 595} 596 597static int 598cx_bus_dma_mem_alloc (int bnum, int cnum, cx_dma_mem_t *dmem) 599{ 600 int error; 601 602 error = bus_dma_tag_create (NULL, 16, 0, BUS_SPACE_MAXADDR_24BIT, 603 BUS_SPACE_MAXADDR, NULL, NULL, dmem->size, 1, 604 dmem->size, 0, NULL, NULL, &dmem->dmat); 605 if (error) { 606 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 607 else printf ("cx%d: ", bnum); 608 printf ("couldn't allocate tag for dma memory\n"); 609 return 0; 610 } 611 error = bus_dmamem_alloc (dmem->dmat, (void **)&dmem->virt, 612 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &dmem->mapp); 613 if (error) { 614 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 615 else printf ("cx%d: ", bnum); 616 printf ("couldn't allocate mem for dma memory\n"); 617 bus_dma_tag_destroy (dmem->dmat); 618 return 0; 619 } 620 error = bus_dmamap_load (dmem->dmat, dmem->mapp, dmem->virt, 621 dmem->size, cx_bus_dmamap_addr, &dmem->phys, 0); 622 if (error) { 623 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 624 else printf ("cx%d: ", bnum); 625 printf ("couldn't load mem map for dma memory\n"); 626 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 627 bus_dma_tag_destroy (dmem->dmat); 628 return 0; 629 } 630 return 1; 631} 632 633static void 634cx_bus_dma_mem_free (cx_dma_mem_t *dmem) 635{ 636 bus_dmamap_unload (dmem->dmat, dmem->mapp); 637 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 638 bus_dma_tag_destroy (dmem->dmat); 639} 640 641/* 642 * The adapter is present, initialize the driver structures. 643 */ 644static int cx_attach (device_t dev) 645{ 646 bdrv_t *bd = device_get_softc (dev); 647 u_long iobase, drq, irq, rescount; 648 int unit = device_get_unit (dev); 649 char *cx_ln = CX_LOCK_NAME; 650 cx_board_t *b; 651 cx_chan_t *c; 652 drv_t *d; 653 int i; 654 int s; 655 656 KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit)); 657 658 bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount); 659 bd->base_rid = 0; 660 bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid, 661 iobase, iobase + NPORT, NPORT, RF_ACTIVE); 662 if (! bd->base_res) { 663 printf ("cx%d: cannot allocate base address\n", unit); 664 return ENXIO; 665 } 666 667 if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) { 668 for (i = 0; (drq = dmatab [i]) != 0; i++) { 669 if (!cx_is_free_res (dev, 0, SYS_RES_DRQ, 670 drq, drq + 1, 1)) 671 continue; 672 bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1); 673 break; 674 } 675 676 if (dmatab[i] == 0) { 677 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 678 bd->base_res); 679 printf ("cx%d: Couldn't get DRQ\n", unit); 680 return ENXIO; 681 } 682 } 683 684 bd->drq_rid = 0; 685 bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid, 686 drq, drq + 1, 1, RF_ACTIVE); 687 if (! bd->drq_res) { 688 printf ("cx%d: cannot allocate drq\n", unit); 689 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 690 bd->base_res); 691 return ENXIO; 692 } 693 694 if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) { 695 for (i = 0; (irq = irqtab [i]) != 0; i++) { 696 if (!cx_is_free_res (dev, 0, SYS_RES_IRQ, 697 irq, irq + 1, 1)) 698 continue; 699 bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1); 700 break; 701 } 702 703 if (irqtab[i] == 0) { 704 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 705 bd->drq_res); 706 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 707 bd->base_res); 708 printf ("cx%d: Couldn't get IRQ\n", unit); 709 return ENXIO; 710 } 711 } 712 713 bd->irq_rid = 0; 714 bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid, 715 irq, irq + 1, 1, RF_ACTIVE); 716 if (! bd->irq_res) { 717 printf ("cx%d: Couldn't allocate irq\n", unit); 718 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 719 bd->drq_res); 720 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 721 bd->base_res); 722 return ENXIO; 723 } 724 725 b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK); 726 if (!b) { 727 printf ("cx:%d: Couldn't allocate memory\n", unit); 728 return (ENXIO); 729 } 730 adapter[unit] = b; 731 bzero (b, sizeof(cx_board_t)); 732 733 if (! cx_open_board (b, unit, iobase, irq, drq)) { 734 printf ("cx%d: error loading firmware\n", unit); 735 free (b, M_DEVBUF); 736 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 737 bd->irq_res); 738 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 739 bd->drq_res); 740 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 741 bd->base_res); 742 return ENXIO; 743 } 744 745 bd->board = b; 746 747 cx_ln[2] = '0' + unit; 748 mtx_init (&bd->cx_mtx, cx_ln, MTX_NETWORK_LOCK, MTX_DEF|MTX_RECURSE); 749 if (! probe_irq (b, irq)) { 750 printf ("cx%d: irq %ld not functional\n", unit, irq); 751 bd->board = 0; 752 adapter [unit] = 0; 753 mtx_destroy (&bd->cx_mtx); 754 free (b, M_DEVBUF); 755 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 756 bd->irq_res); 757 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 758 bd->drq_res); 759 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 760 bd->base_res); 761 return ENXIO; 762 } 763 b->sys = bd; 764 callout_init (&led_timo[b->num], CALLOUT_MPSAFE); 765 s = splhigh (); 766 if (bus_setup_intr (dev, bd->irq_res, 767 INTR_TYPE_NET|INTR_MPSAFE, 768 NULL, cx_intr, bd, &bd->intrhand)) { 769 printf ("cx%d: Can't setup irq %ld\n", unit, irq); 770 bd->board = 0; 771 b->sys = 0; 772 adapter [unit] = 0; 773 mtx_destroy (&bd->cx_mtx); 774 free (b, M_DEVBUF); 775 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 776 bd->irq_res); 777 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 778 bd->drq_res); 779 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 780 bd->base_res); 781 splx (s); 782 return ENXIO; 783 } 784 785 CX_LOCK (bd); 786 cx_init (b, b->num, b->port, irq, drq); 787 cx_setup_board (b, 0, 0, 0); 788 CX_UNLOCK (bd); 789 790 printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name); 791 792 for (c=b->chan; c<b->chan+NCHAN; ++c) { 793 if (c->type == T_NONE) 794 continue; 795 d = &bd->channel[c->num]; 796 d->dmamem.size = sizeof(cx_buf_t); 797 if (! cx_bus_dma_mem_alloc (unit, c->num, &d->dmamem)) 798 continue; 799 d->board = b; 800 d->chan = c; 801 d->open_dev = 0; 802 c->sys = d; 803 channel [b->num*NCHAN + c->num] = d; 804 sprintf (d->name, "cx%d.%d", b->num, c->num); 805 806 switch (c->type) { 807 case T_SYNC_RS232: 808 case T_SYNC_V35: 809 case T_SYNC_RS449: 810 case T_UNIV: 811 case T_UNIV_RS232: 812 case T_UNIV_RS449: 813 case T_UNIV_V35: 814#ifdef NETGRAPH 815 if (ng_make_node_common (&typestruct, &d->node) != 0) { 816 printf ("%s: cannot make common node\n", d->name); 817 channel [b->num*NCHAN + c->num] = 0; 818 c->sys = 0; 819 cx_bus_dma_mem_free (&d->dmamem); 820 continue; 821 } 822 NG_NODE_SET_PRIVATE (d->node, d); 823 sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE, 824 c->board->num*NCHAN + c->num); 825 if (ng_name_node (d->node, d->nodename)) { 826 printf ("%s: cannot name node\n", d->nodename); 827 NG_NODE_UNREF (d->node); 828 channel [b->num*NCHAN + c->num] = 0; 829 c->sys = 0; 830 cx_bus_dma_mem_free (&d->dmamem); 831 continue; 832 } 833 d->lo_queue.ifq_maxlen = IFQ_MAXLEN; 834 d->hi_queue.ifq_maxlen = IFQ_MAXLEN; 835 mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF); 836 mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF); 837 callout_init (&d->timeout_handle, CALLOUT_MPSAFE); 838#else /*NETGRAPH*/ 839 d->ifp = if_alloc(IFT_PPP); 840 if (d->ifp == NULL) { 841 printf ("%s: cannot if_alloc() common interface\n", 842 d->name); 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->ifp->if_softc = d; 849 if_initname (d->ifp, "cx", b->num * NCHAN + c->num); 850 d->ifp->if_mtu = PP_MTU; 851 d->ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST; 852 d->ifp->if_ioctl = cx_sioctl; 853 d->ifp->if_start = cx_ifstart; 854 d->ifp->if_watchdog = cx_ifwatchdog; 855 d->ifp->if_init = cx_initialize; 856 d->queue.ifq_maxlen = 2; 857 mtx_init (&d->queue.ifq_mtx, "cx_queue", NULL, MTX_DEF); 858 sppp_attach (d->ifp); 859 if_attach (d->ifp); 860 IFP2SP(d->ifp)->pp_tlf = cx_tlf; 861 IFP2SP(d->ifp)->pp_tls = cx_tls; 862 /* If BPF is in the kernel, call the attach for it. 863 * Size of PPP header is 4 bytes. */ 864 bpfattach (d->ifp, DLT_PPP, 4); 865#endif /*NETGRAPH*/ 866 } 867 d->tty = ttyalloc (); 868 d->tty->t_open = cx_topen; 869 d->tty->t_close = cx_tclose; 870 d->tty->t_param = cx_param; 871 d->tty->t_stop = cx_stop; 872 d->tty->t_modem = cx_tmodem; 873 d->tty->t_oproc = cx_oproc; 874 d->tty->t_sc = d; 875 CX_LOCK (bd); 876 cx_start_chan (c, d->dmamem.virt, d->dmamem.phys); 877 cx_register_receive (c, &cx_receive); 878 cx_register_transmit (c, &cx_transmit); 879 cx_register_error (c, &cx_error); 880 cx_register_modem (c, &cx_modem); 881 CX_UNLOCK (bd); 882 883 ttycreate(d->tty, TS_CALLOUT, "x%r%r", b->num, c->num); 884 d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num); 885 d->devt->si_drv1 = d; 886 callout_init (&d->dcd_timeout_handle, CALLOUT_MPSAFE); 887 } 888 splx (s); 889 890 return 0; 891} 892 893static int cx_detach (device_t dev) 894{ 895 bdrv_t *bd = device_get_softc (dev); 896 cx_board_t *b = bd->board; 897 cx_chan_t *c; 898 int s; 899 900 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized")); 901 902 s = splhigh (); 903 CX_LOCK (bd); 904 /* Check if the device is busy (open). */ 905 for (c = b->chan; c < b->chan + NCHAN; ++c) { 906 drv_t *d = (drv_t*) c->sys; 907 908 if (!d || d->chan->type == T_NONE) 909 continue; 910 if (d->lock) { 911 CX_UNLOCK (bd); 912 splx (s); 913 return EBUSY; 914 } 915 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 916 (d->open_dev|0x2)) { 917 CX_UNLOCK (bd); 918 splx (s); 919 return EBUSY; 920 } 921 if (d->running) { 922 CX_UNLOCK (bd); 923 splx (s); 924 return EBUSY; 925 } 926 } 927 928 /* Deactivate the timeout routine. And soft interrupt*/ 929 callout_stop (&led_timo[b->num]); 930 931 for (c = b->chan; c < b->chan + NCHAN; ++c) { 932 drv_t *d = c->sys; 933 934 if (!d || d->chan->type == T_NONE) 935 continue; 936 937 callout_stop (&d->dcd_timeout_handle); 938 } 939 CX_UNLOCK (bd); 940 bus_teardown_intr (dev, bd->irq_res, bd->intrhand); 941 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 942 943 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 944 945 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res); 946 947 CX_LOCK (bd); 948 cx_close_board (b); 949 950 /* Detach the interfaces, free buffer memory. */ 951 for (c = b->chan; c < b->chan + NCHAN; ++c) { 952 drv_t *d = (drv_t*) c->sys; 953 954 if (!d || d->chan->type == T_NONE) 955 continue; 956 957 if (d->tty) { 958 ttyfree (d->tty); 959 d->tty = NULL; 960 } 961 962#ifdef NETGRAPH 963 if (d->node) { 964 ng_rmnode_self (d->node); 965 NG_NODE_UNREF (d->node); 966 d->node = NULL; 967 } 968 mtx_destroy (&d->lo_queue.ifq_mtx); 969 mtx_destroy (&d->hi_queue.ifq_mtx); 970#else 971 /* Detach from the packet filter list of interfaces. */ 972 bpfdetach (d->ifp); 973 /* Detach from the sync PPP list. */ 974 sppp_detach (d->ifp); 975 976 if_detach (d->ifp); 977 if_free(d->ifp); 978 /* XXXRIK: check interconnection with irq handler */ 979 IF_DRAIN (&d->queue); 980 mtx_destroy (&d->queue.ifq_mtx); 981#endif 982 destroy_dev (d->devt); 983 } 984 985 cx_led_off (b); 986 CX_UNLOCK (bd); 987 callout_drain (&led_timo[b->num]); 988 for (c = b->chan; c < b->chan + NCHAN; ++c) { 989 drv_t *d = c->sys; 990 991 if (!d || d->chan->type == T_NONE) 992 continue; 993 994 callout_drain (&d->dcd_timeout_handle); 995 } 996 splx (s); 997 998 s = splhigh (); 999 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1000 drv_t *d = (drv_t*) c->sys; 1001 1002 if (!d || d->chan->type == T_NONE) 1003 continue; 1004 1005 /* Deallocate buffers. */ 1006 cx_bus_dma_mem_free (&d->dmamem); 1007 } 1008 bd->board = 0; 1009 adapter [b->num] = 0; 1010 free (b, M_DEVBUF); 1011 splx (s); 1012 1013 mtx_destroy (&bd->cx_mtx); 1014 1015 return 0; 1016} 1017 1018#ifndef NETGRAPH 1019static void cx_ifstart (struct ifnet *ifp) 1020{ 1021 drv_t *d = ifp->if_softc; 1022 bdrv_t *bd = d->board->sys; 1023 1024 CX_LOCK (bd); 1025 cx_start (d); 1026 CX_UNLOCK (bd); 1027} 1028 1029static void cx_ifwatchdog (struct ifnet *ifp) 1030{ 1031 drv_t *d = ifp->if_softc; 1032 1033 cx_watchdog (d); 1034} 1035 1036static void cx_tlf (struct sppp *sp) 1037{ 1038 drv_t *d = SP2IFP(sp)->if_softc; 1039 1040 CX_DEBUG (d, ("cx_tlf\n")); 1041/* cx_set_dtr (d->chan, 0);*/ 1042/* cx_set_rts (d->chan, 0);*/ 1043 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1044 sp->pp_down (sp); 1045} 1046 1047static void cx_tls (struct sppp *sp) 1048{ 1049 drv_t *d = SP2IFP(sp)->if_softc; 1050 1051 CX_DEBUG (d, ("cx_tls\n")); 1052 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1053 sp->pp_up (sp); 1054} 1055 1056/* 1057 * Initialization of interface. 1058 * It seems to be never called by upper level. 1059 */ 1060static void cx_initialize (void *softc) 1061{ 1062 drv_t *d = softc; 1063 1064 CX_DEBUG (d, ("cx_initialize\n")); 1065} 1066 1067/* 1068 * Process an ioctl request. 1069 */ 1070static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data) 1071{ 1072 drv_t *d = ifp->if_softc; 1073 bdrv_t *bd = d->board->sys; 1074 int error, s, was_up, should_be_up; 1075 1076 /* No socket ioctls while the channel is in async mode. */ 1077 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC) 1078 return EBUSY; 1079 1080 /* Socket ioctls on slave subchannels are not allowed. */ 1081 was_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1082 error = sppp_ioctl (ifp, cmd, data); 1083 if (error) 1084 return error; 1085 1086 s = splhigh (); 1087 CX_LOCK (bd); 1088 if (! (ifp->if_flags & IFF_DEBUG)) 1089 d->chan->debug = 0; 1090 else 1091 d->chan->debug = d->chan->debug_shadow; 1092 CX_UNLOCK (bd); 1093 splx (s); 1094 1095 switch (cmd) { 1096 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0; 1097 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0; 1098 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0; 1099 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break; 1100 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break; 1101 } 1102 1103 /* We get here only in case of SIFFLAGS or SIFADDR. */ 1104 s = splhigh (); 1105 CX_LOCK (bd); 1106 should_be_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1107 if (!was_up && should_be_up) { 1108 /* Interface goes up -- start it. */ 1109 cx_up (d); 1110 cx_start (d); 1111 } else if (was_up && !should_be_up) { 1112 /* Interface is going down -- stop it. */ 1113 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/ 1114 cx_down (d); 1115 } 1116 CX_UNLOCK (bd); 1117 splx (s); 1118 return 0; 1119} 1120#endif /*NETGRAPH*/ 1121 1122/* 1123 * Stop the interface. Called on splimp(). 1124 */ 1125static void cx_down (drv_t *d) 1126{ 1127 int s = splhigh (); 1128 CX_DEBUG (d, ("cx_down\n")); 1129 cx_set_dtr (d->chan, 0); 1130 cx_set_rts (d->chan, 0); 1131 d->running = 0; 1132 splx (s); 1133} 1134 1135/* 1136 * Start the interface. Called on splimp(). 1137 */ 1138static void cx_up (drv_t *d) 1139{ 1140 int s = splhigh (); 1141 CX_DEBUG (d, ("cx_up\n")); 1142 cx_set_dtr (d->chan, 1); 1143 cx_set_rts (d->chan, 1); 1144 d->running = 1; 1145 splx (s); 1146} 1147 1148/* 1149 * Start output on the (slave) interface. Get another datagram to send 1150 * off of the interface queue, and copy it to the interface 1151 * before starting the output. 1152 */ 1153static void cx_send (drv_t *d) 1154{ 1155 struct mbuf *m; 1156 u_short len; 1157 1158 CX_DEBUG2 (d, ("cx_send\n")); 1159 1160 /* No output if the interface is down. */ 1161 if (! d->running) 1162 return; 1163 1164 /* No output if the modem is off. */ 1165 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan)) 1166 return; 1167 1168 if (cx_buf_free (d->chan)) { 1169 /* Get the packet to send. */ 1170#ifdef NETGRAPH 1171 IF_DEQUEUE (&d->hi_queue, m); 1172 if (! m) 1173 IF_DEQUEUE (&d->lo_queue, m); 1174#else 1175 m = sppp_dequeue (d->ifp); 1176#endif 1177 if (! m) 1178 return; 1179#ifndef NETGRAPH 1180 BPF_MTAP (d->ifp, m); 1181#endif 1182 len = m_length (m, NULL); 1183 if (! m->m_next) 1184 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t), 1185 len, 0); 1186 else { 1187 u_char buf [DMABUFSZ]; 1188 m_copydata (m, 0, len, buf); 1189 cx_send_packet (d->chan, buf, len, 0); 1190 } 1191 m_freem (m); 1192 1193 /* Set up transmit timeout, 10 seconds. */ 1194#ifdef NETGRAPH 1195 d->timeout = 10; 1196#else 1197 d->ifp->if_timer = 10; 1198#endif 1199 } 1200#ifndef NETGRAPH 1201 d->ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1202#endif 1203} 1204 1205/* 1206 * Start output on the interface. 1207 * Always called on splimp(). 1208 */ 1209static void cx_start (drv_t *d) 1210{ 1211 int s = splhigh (); 1212 if (d->running) { 1213 if (! d->chan->dtr) 1214 cx_set_dtr (d->chan, 1); 1215 if (! d->chan->rts) 1216 cx_set_rts (d->chan, 1); 1217 cx_send (d); 1218 } 1219 splx (s); 1220} 1221 1222/* 1223 * Handle transmit timeouts. 1224 * Recover after lost transmit interrupts. 1225 * Always called on splimp(). 1226 */ 1227static void cx_watchdog (drv_t *d) 1228{ 1229 bdrv_t *bd = d->board->sys; 1230 1231 int s = splhigh (); 1232 CX_LOCK (bd); 1233 CX_DEBUG (d, ("device timeout\n")); 1234 if (d->running) { 1235 cx_setup_chan (d->chan); 1236 cx_start_chan (d->chan, 0, 0); 1237 cx_set_dtr (d->chan, 1); 1238 cx_set_rts (d->chan, 1); 1239 cx_start (d); 1240 } 1241 CX_UNLOCK (bd); 1242 splx (s); 1243} 1244 1245/* 1246 * Transmit callback function. 1247 */ 1248static void cx_transmit (cx_chan_t *c, void *attachment, int len) 1249{ 1250 drv_t *d = c->sys; 1251 1252 if (!d) 1253 return; 1254 1255 if (c->mode == M_ASYNC && d->tty) { 1256 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH); 1257 d->atimeout = 0; 1258 if (d->tty->t_dev) { 1259 d->intr_action |= CX_WRITE; 1260 MY_SOFT_INTR = 1; 1261 swi_sched (cx_fast_ih, 0); 1262 } 1263 return; 1264 } 1265#ifdef NETGRAPH 1266 d->timeout = 0; 1267#else 1268 ++d->ifp->if_opackets; 1269 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1270 d->ifp->if_timer = 0; 1271#endif 1272 cx_start (d); 1273} 1274 1275/* 1276 * Process the received packet. 1277 */ 1278static void cx_receive (cx_chan_t *c, char *data, int len) 1279{ 1280 drv_t *d = c->sys; 1281 struct mbuf *m; 1282 char *cc = data; 1283#ifdef NETGRAPH 1284 int error; 1285#endif 1286 1287 if (!d) 1288 return; 1289 1290 if (c->mode == M_ASYNC && d->tty) { 1291 if (d->tty->t_state & TS_ISOPEN) { 1292 async_q *q = &d->aqueue; 1293 int size = BF_SZ - 1 - AQ_GSZ (q); 1294 1295 if (len <= 0 && !size) 1296 return; 1297 1298 if (len > size) { 1299 c->ierrs++; 1300 cx_error (c, CX_OVERRUN); 1301 len = size - 1; 1302 } 1303 1304 while (len--) { 1305 AQ_PUSH (q, *(unsigned char *)cc); 1306 cc++; 1307 } 1308 1309 d->intr_action |= CX_READ; 1310 MY_SOFT_INTR = 1; 1311 swi_sched (cx_fast_ih, 0); 1312 } 1313 return; 1314 } 1315 if (! d->running) 1316 return; 1317 1318 m = makembuf (data, len); 1319 if (! m) { 1320 CX_DEBUG (d, ("no memory for packet\n")); 1321#ifndef NETGRAPH 1322 ++d->ifp->if_iqdrops; 1323#endif 1324 return; 1325 } 1326 if (c->debug > 1) 1327 printmbuf (m); 1328#ifdef NETGRAPH 1329 m->m_pkthdr.rcvif = 0; 1330 NG_SEND_DATA_ONLY (error, d->hook, m); 1331#else 1332 ++d->ifp->if_ipackets; 1333 m->m_pkthdr.rcvif = d->ifp; 1334 /* Check if there's a BPF listener on this interface. 1335 * If so, hand off the raw packet to bpf. */ 1336 BPF_TAP (d->ifp, data, len); 1337 IF_ENQUEUE (&d->queue, m); 1338#endif 1339} 1340 1341#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\ 1342 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\ 1343 && (!(tp->t_iflag & PARMRK)\ 1344 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\ 1345 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\ 1346 && linesw[tp->t_line]->l_rint == ttyinput) 1347 1348/* 1349 * Error callback function. 1350 */ 1351static void cx_error (cx_chan_t *c, int data) 1352{ 1353 drv_t *d = c->sys; 1354 async_q *q; 1355 1356 if (!d) 1357 return; 1358 1359 q = &(d->aqueue); 1360 1361 switch (data) { 1362 case CX_FRAME: 1363 CX_DEBUG (d, ("frame error\n")); 1364 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1365 && (AQ_GSZ (q) < BF_SZ - 1) 1366 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1367 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1368 AQ_PUSH (q, TTY_FE); 1369 d->intr_action |= CX_READ; 1370 MY_SOFT_INTR = 1; 1371 swi_sched (cx_fast_ih, 0); 1372 } 1373#ifndef NETGRAPH 1374 else 1375 ++d->ifp->if_ierrors; 1376#endif 1377 break; 1378 case CX_CRC: 1379 CX_DEBUG (d, ("crc error\n")); 1380 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1381 && (AQ_GSZ (q) < BF_SZ - 1) 1382 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1383 || !(d->tty->t_iflag & INPCK) 1384 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1385 AQ_PUSH (q, TTY_PE); 1386 d->intr_action |= CX_READ; 1387 MY_SOFT_INTR = 1; 1388 swi_sched (cx_fast_ih, 0); 1389 } 1390#ifndef NETGRAPH 1391 else 1392 ++d->ifp->if_ierrors; 1393#endif 1394 break; 1395 case CX_OVERRUN: 1396 CX_DEBUG (d, ("overrun error\n")); 1397#ifdef TTY_OE 1398 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1399 && (AQ_GSZ (q) < BF_SZ - 1) 1400 && (!CONDITION((&d->tty->t_termios), (d->tty)))) { 1401 AQ_PUSH (q, TTY_OE); 1402 d->intr_action |= CX_READ; 1403 MY_SOFT_INTR = 1; 1404 swi_sched (cx_fast_ih, 0); 1405 } 1406#endif 1407#ifndef NETGRAPH 1408 else { 1409 ++d->ifp->if_collisions; 1410 ++d->ifp->if_ierrors; 1411 } 1412#endif 1413 break; 1414 case CX_OVERFLOW: 1415 CX_DEBUG (d, ("overflow error\n")); 1416#ifndef NETGRAPH 1417 if (c->mode != M_ASYNC) 1418 ++d->ifp->if_ierrors; 1419#endif 1420 break; 1421 case CX_UNDERRUN: 1422 CX_DEBUG (d, ("underrun error\n")); 1423 if (c->mode != M_ASYNC) { 1424#ifdef NETGRAPH 1425 d->timeout = 0; 1426#else 1427 ++d->ifp->if_oerrors; 1428 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1429 d->ifp->if_timer = 0; 1430 cx_start (d); 1431#endif 1432 } 1433 break; 1434 case CX_BREAK: 1435 CX_DEBUG (d, ("break error\n")); 1436 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1437 && (AQ_GSZ (q) < BF_SZ - 1) 1438 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1439 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) { 1440 AQ_PUSH (q, TTY_BI); 1441 d->intr_action |= CX_READ; 1442 MY_SOFT_INTR = 1; 1443 swi_sched (cx_fast_ih, 0); 1444 } 1445#ifndef NETGRAPH 1446 else 1447 ++d->ifp->if_ierrors; 1448#endif 1449 break; 1450 default: 1451 CX_DEBUG (d, ("error #%d\n", data)); 1452 } 1453} 1454 1455static int cx_topen (struct tty *tp, struct cdev *dev) 1456{ 1457 bdrv_t *bd; 1458 drv_t *d; 1459 1460 d = tp->t_sc; 1461 CX_DEBUG2 (d, ("cx_open (serial)\n")); 1462 1463 bd = d->board->sys; 1464 1465 if (d->chan->mode != M_ASYNC) 1466 return (EBUSY); 1467 1468 d->open_dev |= 0x2; 1469 CX_LOCK (bd); 1470 cx_start_chan (d->chan, 0, 0); 1471 cx_set_dtr (d->chan, 1); 1472 cx_set_rts (d->chan, 1); 1473 d->cd = cx_get_cd (d->chan); 1474 CX_UNLOCK (bd); 1475 1476 CX_DEBUG2 (d, ("cx_open done\n")); 1477 1478 return 0; 1479} 1480 1481static void cx_tclose (struct tty *tp) 1482{ 1483 drv_t *d; 1484 bdrv_t *bd; 1485 1486 d = tp->t_sc; 1487 CX_DEBUG2 (d, ("cx_close\n")); 1488 bd = d->board->sys; 1489 CX_LOCK (bd); 1490 /* Disable receiver. 1491 * Transmitter continues sending the queued data. */ 1492 cx_enable_receive (d->chan, 0); 1493 CX_UNLOCK (bd); 1494 d->open_dev &= ~0x2; 1495} 1496 1497static int cx_tmodem (struct tty *tp, int sigon, int sigoff) 1498{ 1499 drv_t *d; 1500 bdrv_t *bd; 1501 1502 d = tp->t_sc; 1503 bd = d->board->sys; 1504 1505 CX_LOCK (bd); 1506 if (!sigon && !sigoff) { 1507 if (cx_get_dsr (d->chan)) sigon |= SER_DSR; 1508 if (cx_get_cd (d->chan)) sigon |= SER_DCD; 1509 if (cx_get_cts (d->chan)) sigon |= SER_CTS; 1510 if (d->chan->dtr) sigon |= SER_DTR; 1511 if (d->chan->rts) sigon |= SER_RTS; 1512 CX_UNLOCK (bd); 1513 return sigon; 1514 } 1515 1516 if (sigon & SER_DTR) 1517 cx_set_dtr (d->chan, 1); 1518 if (sigoff & SER_DTR) 1519 cx_set_dtr (d->chan, 0); 1520 if (sigon & SER_RTS) 1521 cx_set_rts (d->chan, 1); 1522 if (sigoff & SER_RTS) 1523 cx_set_rts (d->chan, 0); 1524 CX_UNLOCK (bd); 1525 1526 return (0); 1527} 1528 1529static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td) 1530{ 1531 int unit; 1532 drv_t *d; 1533 1534 d = dev->si_drv1; 1535 unit = d->chan->num; 1536 1537 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n", 1538 unit, flag, mode)); 1539 1540 d->open_dev |= 0x1; 1541 1542 CX_DEBUG2 (d, ("cx_open done\n")); 1543 1544 return 0; 1545} 1546 1547static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td) 1548{ 1549 drv_t *d; 1550 1551 d = dev->si_drv1; 1552 CX_DEBUG2 (d, ("cx_close\n")); 1553 d->open_dev &= ~0x1; 1554 return 0; 1555} 1556 1557static int cx_modem_status (drv_t *d) 1558{ 1559 bdrv_t *bd = d->board->sys; 1560 int status = 0, s = splhigh (); 1561 CX_LOCK (bd); 1562 /* Already opened by someone or network interface is up? */ 1563 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1564 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running)) 1565 status = TIOCM_LE; /* always enabled while open */ 1566 1567 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR; 1568 if (cx_get_cd (d->chan)) status |= TIOCM_CD; 1569 if (cx_get_cts (d->chan)) status |= TIOCM_CTS; 1570 if (d->chan->dtr) status |= TIOCM_DTR; 1571 if (d->chan->rts) status |= TIOCM_RTS; 1572 CX_UNLOCK (bd); 1573 splx (s); 1574 return status; 1575} 1576 1577static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1578{ 1579 drv_t *d; 1580 bdrv_t *bd; 1581 cx_chan_t *c; 1582 struct serial_statistics *st; 1583 int error, s; 1584 char mask[16]; 1585 1586 d = dev->si_drv1; 1587 c = d->chan; 1588 1589 bd = d->board->sys; 1590 1591 switch (cmd) { 1592 case SERIAL_GETREGISTERED: 1593 CX_DEBUG2 (d, ("ioctl: getregistered\n")); 1594 bzero (mask, sizeof(mask)); 1595 for (s=0; s<NCX*NCHAN; ++s) 1596 if (channel [s]) 1597 mask [s/8] |= 1 << (s & 7); 1598 bcopy (mask, data, sizeof (mask)); 1599 return 0; 1600 1601 case SERIAL_GETPORT: 1602 CX_DEBUG2 (d, ("ioctl: getport\n")); 1603 s = splhigh (); 1604 CX_LOCK (bd); 1605 *(int *)data = cx_get_port (c); 1606 CX_UNLOCK (bd); 1607 splx (s); 1608 if (*(int *)data<0) 1609 return (EINVAL); 1610 else 1611 return 0; 1612 1613 case SERIAL_SETPORT: 1614 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1615 /* Only for superuser! */ 1616 error = priv_check (td, PRIV_DRIVER); 1617 if (error) 1618 return error; 1619 1620 s = splhigh (); 1621 CX_LOCK (bd); 1622 cx_set_port (c, *(int *)data); 1623 CX_UNLOCK (bd); 1624 splx (s); 1625 return 0; 1626 1627#ifndef NETGRAPH 1628 case SERIAL_GETPROTO: 1629 CX_DEBUG2 (d, ("ioctl: getproto\n")); 1630 s = splhigh (); 1631 CX_LOCK (bd); 1632 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" : 1633 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" : 1634 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp"); 1635 CX_UNLOCK (bd); 1636 splx (s); 1637 return 0; 1638 1639 case SERIAL_SETPROTO: 1640 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1641 /* Only for superuser! */ 1642 error = priv_check (td, PRIV_DRIVER); 1643 if (error) 1644 return error; 1645 if (c->mode == M_ASYNC) 1646 return EBUSY; 1647 if (d->ifp->if_drv_flags & IFF_DRV_RUNNING) 1648 return EBUSY; 1649 if (! strcmp ("cisco", (char*)data)) { 1650 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR); 1651 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1652 d->ifp->if_flags |= PP_CISCO; 1653 } else if (! strcmp ("fr", (char*)data)) { 1654 d->ifp->if_flags &= ~(PP_CISCO); 1655 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE; 1656 } else if (! strcmp ("ppp", (char*)data)) { 1657 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE); 1658 d->ifp->if_flags &= ~(PP_CISCO); 1659 } else 1660 return EINVAL; 1661 return 0; 1662 1663 case SERIAL_GETKEEPALIVE: 1664 CX_DEBUG2 (d, ("ioctl: getkeepalive\n")); 1665 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1666 (d->ifp->if_flags & PP_CISCO) || 1667 (c->mode == M_ASYNC)) 1668 return EINVAL; 1669 s = splhigh (); 1670 CX_LOCK (bd); 1671 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0; 1672 CX_UNLOCK (bd); 1673 splx (s); 1674 return 0; 1675 1676 case SERIAL_SETKEEPALIVE: 1677 CX_DEBUG2 (d, ("ioctl: setkeepalive\n")); 1678 /* Only for superuser! */ 1679 error = priv_check (td, PRIV_DRIVER); 1680 if (error) 1681 return error; 1682 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1683 (d->ifp->if_flags & PP_CISCO)) 1684 return EINVAL; 1685 s = splhigh (); 1686 CX_LOCK (bd); 1687 if (*(int*)data) 1688 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1689 else 1690 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE; 1691 CX_UNLOCK (bd); 1692 splx (s); 1693 return 0; 1694#endif /*NETGRAPH*/ 1695 1696 case SERIAL_GETMODE: 1697 CX_DEBUG2 (d, ("ioctl: getmode\n")); 1698 s = splhigh (); 1699 CX_LOCK (bd); 1700 *(int*)data = (c->mode == M_ASYNC) ? 1701 SERIAL_ASYNC : SERIAL_HDLC; 1702 CX_UNLOCK (bd); 1703 splx (s); 1704 return 0; 1705 1706 case SERIAL_SETMODE: 1707 CX_DEBUG2 (d, ("ioctl: setmode\n")); 1708 /* Only for superuser! */ 1709 error = priv_check (td, PRIV_DRIVER); 1710 if (error) 1711 return error; 1712 1713 /* Somebody is waiting for carrier? */ 1714 if (d->lock) 1715 return EBUSY; 1716 /* /dev/ttyXX is already opened by someone? */ 1717 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1718 (d->open_dev|0x2)) 1719 return EBUSY; 1720 /* Network interface is up? 1721 * Cannot change to async mode. */ 1722 if (c->mode != M_ASYNC && d->running && 1723 (*(int*)data == SERIAL_ASYNC)) 1724 return EBUSY; 1725 1726 s = splhigh (); 1727 CX_LOCK (bd); 1728 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) { 1729 cx_set_mode (c, M_ASYNC); 1730 cx_enable_receive (c, 0); 1731 cx_enable_transmit (c, 0); 1732 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) { 1733 if (d->ifp->if_flags & IFF_DEBUG) 1734 c->debug = c->debug_shadow; 1735 cx_set_mode (c, M_HDLC); 1736 cx_enable_receive (c, 1); 1737 cx_enable_transmit (c, 1); 1738 } 1739 CX_UNLOCK (bd); 1740 splx (s); 1741 return 0; 1742 1743 case SERIAL_GETSTAT: 1744 CX_DEBUG2 (d, ("ioctl: getestat\n")); 1745 st = (struct serial_statistics*) data; 1746 s = splhigh (); 1747 CX_LOCK (bd); 1748 st->rintr = c->rintr; 1749 st->tintr = c->tintr; 1750 st->mintr = c->mintr; 1751 st->ibytes = c->ibytes; 1752 st->ipkts = c->ipkts; 1753 st->ierrs = c->ierrs; 1754 st->obytes = c->obytes; 1755 st->opkts = c->opkts; 1756 st->oerrs = c->oerrs; 1757 CX_UNLOCK (bd); 1758 splx (s); 1759 return 0; 1760 1761 case SERIAL_CLRSTAT: 1762 CX_DEBUG2 (d, ("ioctl: clrstat\n")); 1763 /* Only for superuser! */ 1764 error = priv_check (td, PRIV_DRIVER); 1765 if (error) 1766 return error; 1767 s = splhigh (); 1768 CX_LOCK (bd); 1769 c->rintr = 0; 1770 c->tintr = 0; 1771 c->mintr = 0; 1772 c->ibytes = 0; 1773 c->ipkts = 0; 1774 c->ierrs = 0; 1775 c->obytes = 0; 1776 c->opkts = 0; 1777 c->oerrs = 0; 1778 CX_UNLOCK (bd); 1779 splx (s); 1780 return 0; 1781 1782 case SERIAL_GETBAUD: 1783 CX_DEBUG2 (d, ("ioctl: getbaud\n")); 1784 if (c->mode == M_ASYNC) 1785 return EINVAL; 1786 s = splhigh (); 1787 CX_LOCK (bd); 1788 *(long*)data = cx_get_baud(c); 1789 CX_UNLOCK (bd); 1790 splx (s); 1791 return 0; 1792 1793 case SERIAL_SETBAUD: 1794 CX_DEBUG2 (d, ("ioctl: setbaud\n")); 1795 /* Only for superuser! */ 1796 error = priv_check (td, PRIV_DRIVER); 1797 if (error) 1798 return error; 1799 if (c->mode == M_ASYNC) 1800 return EINVAL; 1801 s = splhigh (); 1802 CX_LOCK (bd); 1803 cx_set_baud (c, *(long*)data); 1804 CX_UNLOCK (bd); 1805 splx (s); 1806 return 0; 1807 1808 case SERIAL_GETLOOP: 1809 CX_DEBUG2 (d, ("ioctl: getloop\n")); 1810 if (c->mode == M_ASYNC) 1811 return EINVAL; 1812 s = splhigh (); 1813 CX_LOCK (bd); 1814 *(int*)data = cx_get_loop (c); 1815 CX_UNLOCK (bd); 1816 splx (s); 1817 return 0; 1818 1819 case SERIAL_SETLOOP: 1820 CX_DEBUG2 (d, ("ioctl: setloop\n")); 1821 /* Only for superuser! */ 1822 error = priv_check (td, PRIV_DRIVER); 1823 if (error) 1824 return error; 1825 if (c->mode == M_ASYNC) 1826 return EINVAL; 1827 s = splhigh (); 1828 CX_LOCK (bd); 1829 cx_set_loop (c, *(int*)data); 1830 CX_UNLOCK (bd); 1831 splx (s); 1832 return 0; 1833 1834 case SERIAL_GETDPLL: 1835 CX_DEBUG2 (d, ("ioctl: getdpll\n")); 1836 if (c->mode == M_ASYNC) 1837 return EINVAL; 1838 s = splhigh (); 1839 CX_LOCK (bd); 1840 *(int*)data = cx_get_dpll (c); 1841 CX_UNLOCK (bd); 1842 splx (s); 1843 return 0; 1844 1845 case SERIAL_SETDPLL: 1846 CX_DEBUG2 (d, ("ioctl: setdpll\n")); 1847 /* Only for superuser! */ 1848 error = priv_check (td, PRIV_DRIVER); 1849 if (error) 1850 return error; 1851 if (c->mode == M_ASYNC) 1852 return EINVAL; 1853 s = splhigh (); 1854 CX_LOCK (bd); 1855 cx_set_dpll (c, *(int*)data); 1856 CX_UNLOCK (bd); 1857 splx (s); 1858 return 0; 1859 1860 case SERIAL_GETNRZI: 1861 CX_DEBUG2 (d, ("ioctl: getnrzi\n")); 1862 if (c->mode == M_ASYNC) 1863 return EINVAL; 1864 s = splhigh (); 1865 CX_LOCK (bd); 1866 *(int*)data = cx_get_nrzi (c); 1867 CX_UNLOCK (bd); 1868 splx (s); 1869 return 0; 1870 1871 case SERIAL_SETNRZI: 1872 CX_DEBUG2 (d, ("ioctl: setnrzi\n")); 1873 /* Only for superuser! */ 1874 error = priv_check (td, PRIV_DRIVER); 1875 if (error) 1876 return error; 1877 if (c->mode == M_ASYNC) 1878 return EINVAL; 1879 s = splhigh (); 1880 CX_LOCK (bd); 1881 cx_set_nrzi (c, *(int*)data); 1882 CX_UNLOCK (bd); 1883 splx (s); 1884 return 0; 1885 1886 case SERIAL_GETDEBUG: 1887 CX_DEBUG2 (d, ("ioctl: getdebug\n")); 1888 s = splhigh (); 1889 CX_LOCK (bd); 1890 *(int*)data = c->debug; 1891 CX_UNLOCK (bd); 1892 splx (s); 1893 return 0; 1894 1895 case SERIAL_SETDEBUG: 1896 CX_DEBUG2 (d, ("ioctl: setdebug\n")); 1897 /* Only for superuser! */ 1898 error = priv_check (td, PRIV_DRIVER); 1899 if (error) 1900 return error; 1901 s = splhigh (); 1902 CX_LOCK (bd); 1903#ifndef NETGRAPH 1904 if (c->mode == M_ASYNC) { 1905 c->debug = *(int*)data; 1906 } else { 1907 /* 1908 * The debug_shadow is always greater than zero for 1909 * logic simplicity. For switching debug off the 1910 * IFF_DEBUG is responsible (for !M_ASYNC mode). 1911 */ 1912 c->debug_shadow = (*(int*)data) ? (*(int*)data) : 1; 1913 if (d->ifp->if_flags & IFF_DEBUG) 1914 c->debug = c->debug_shadow; 1915 } 1916#else 1917 c->debug = *(int*)data; 1918#endif 1919 CX_UNLOCK (bd); 1920 splx (s); 1921 return 0; 1922 } 1923 1924 switch (cmd) { 1925 case TIOCSDTR: /* Set DTR */ 1926 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n")); 1927 s = splhigh (); 1928 CX_LOCK (bd); 1929 cx_set_dtr (c, 1); 1930 CX_UNLOCK (bd); 1931 splx (s); 1932 return 0; 1933 1934 case TIOCCDTR: /* Clear DTR */ 1935 CX_DEBUG2 (d, ("ioctl: tioccdtr\n")); 1936 s = splhigh (); 1937 CX_LOCK (bd); 1938 cx_set_dtr (c, 0); 1939 CX_UNLOCK (bd); 1940 splx (s); 1941 return 0; 1942 1943 case TIOCMSET: /* Set DTR/RTS */ 1944 CX_DEBUG2 (d, ("ioctl: tiocmset\n")); 1945 s = splhigh (); 1946 CX_LOCK (bd); 1947 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0); 1948 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0); 1949 CX_UNLOCK (bd); 1950 splx (s); 1951 return 0; 1952 1953 case TIOCMBIS: /* Add DTR/RTS */ 1954 CX_DEBUG2 (d, ("ioctl: tiocmbis\n")); 1955 s = splhigh (); 1956 CX_LOCK (bd); 1957 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1); 1958 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1); 1959 CX_UNLOCK (bd); 1960 splx (s); 1961 return 0; 1962 1963 case TIOCMBIC: /* Clear DTR/RTS */ 1964 CX_DEBUG2 (d, ("ioctl: tiocmbic\n")); 1965 s = splhigh (); 1966 CX_LOCK (bd); 1967 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0); 1968 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0); 1969 CX_UNLOCK (bd); 1970 splx (s); 1971 return 0; 1972 1973 case TIOCMGET: /* Get modem status */ 1974 CX_DEBUG2 (d, ("ioctl: tiocmget\n")); 1975 *(int*)data = cx_modem_status (d); 1976 return 0; 1977 1978 } 1979 1980 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd)); 1981 return ENOTTY; 1982} 1983 1984void cx_softintr (void *unused) 1985{ 1986 drv_t *d; 1987 bdrv_t *bd; 1988 async_q *q; 1989 int i, s, ic, k; 1990 while (MY_SOFT_INTR) { 1991 MY_SOFT_INTR = 0; 1992 for (i=0; i<NCX*NCHAN; ++i) { 1993 d = channel [i]; 1994 if (!d || !d->chan || d->chan->type == T_NONE 1995 || d->chan->mode != M_ASYNC || !d->tty 1996 || !d->tty->t_dev) 1997 continue; 1998 bd = d->board->sys; 1999 s = splhigh (); 2000 CX_LOCK (bd); 2001 if (d->intr_action & CX_READ) { 2002 q = &(d->aqueue); 2003 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) { 2004 k = AQ_GSZ(q); 2005 if (d->tty->t_rawq.c_cc + k > 2006 d->tty->t_ihiwat 2007 && (d->tty->t_cflag & CRTS_IFLOW 2008 || d->tty->t_iflag & IXOFF) 2009 && !(d->tty->t_state & TS_TBLOCK)) 2010 ttyblock(d->tty); 2011 d->tty->t_rawcc += k; 2012 while (k>0) { 2013 k--; 2014 AQ_POP (q, ic); 2015 CX_UNLOCK (bd); 2016 splx (s); 2017 putc (ic, &d->tty->t_rawq); 2018 s = splhigh (); 2019 CX_LOCK (bd); 2020 } 2021 ttwakeup(d->tty); 2022 if (d->tty->t_state & TS_TTSTOP 2023 && (d->tty->t_iflag & IXANY 2024 || d->tty->t_cc[VSTART] == 2025 d->tty->t_cc[VSTOP])) { 2026 d->tty->t_state &= ~TS_TTSTOP; 2027 d->tty->t_lflag &= ~FLUSHO; 2028 d->intr_action |= CX_WRITE; 2029 } 2030 } else { 2031 while (q->end != q->beg) { 2032 AQ_POP (q, ic); 2033 CX_UNLOCK (bd); 2034 splx (s); 2035 ttyld_rint (d->tty, ic); 2036 s = splhigh (); 2037 CX_LOCK (bd); 2038 } 2039 } 2040 d->intr_action &= ~CX_READ; 2041 } 2042 splx (s); 2043 CX_UNLOCK (bd); 2044 2045 s = splhigh (); 2046 CX_LOCK (bd); 2047 if (d->intr_action & CX_WRITE) { 2048 if (d->tty->t_line) 2049 ttyld_start (d->tty); 2050 else 2051 cx_oproc (d->tty); 2052 d->intr_action &= ~CX_WRITE; 2053 } 2054 CX_UNLOCK (bd); 2055 splx (s); 2056 2057 } 2058 } 2059} 2060 2061/* 2062 * Fill transmitter buffer with data. 2063 */ 2064static void cx_oproc (struct tty *tp) 2065{ 2066 int s, k; 2067 drv_t *d; 2068 bdrv_t *bd; 2069 static u_char buf[DMABUFSZ]; 2070 u_char *p; 2071 u_short len = 0, sublen = 0; 2072 2073 d = tp->t_sc; 2074 bd = d->board->sys; 2075 2076 CX_DEBUG2 (d, ("cx_oproc\n")); 2077 2078 s = splhigh (); 2079 CX_LOCK (bd); 2080 2081 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts) 2082 cx_set_rts (d->chan, 0); 2083 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts) 2084 cx_set_rts (d->chan, 1); 2085 2086 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) { 2087 /* Start transmitter. */ 2088 cx_enable_transmit (d->chan, 1); 2089 2090 /* Is it busy? */ 2091 if (! cx_buf_free (d->chan)) { 2092 tp->t_state |= TS_BUSY; 2093 CX_UNLOCK (bd); 2094 splx (s); 2095 return; 2096 } 2097 if (tp->t_iflag & IXOFF) { 2098 p = (buf + (DMABUFSZ/2)); 2099 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2100 k = sublen; 2101 while (k--) { 2102 /* Send XON/XOFF out of band. */ 2103 if (*p == tp->t_cc[VSTOP]) { 2104 cx_xflow_ctl (d->chan, 0); 2105 p++; 2106 continue; 2107 } 2108 if (*p == tp->t_cc[VSTART]) { 2109 cx_xflow_ctl (d->chan, 1); 2110 p++; 2111 continue; 2112 } 2113 buf[len] = *p; 2114 len++; 2115 p++; 2116 } 2117 } else { 2118 p = buf; 2119 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2120 } 2121 if (len) { 2122 cx_send_packet (d->chan, buf, len, 0); 2123 tp->t_state |= TS_BUSY; 2124 d->atimeout = 10; 2125 CX_DEBUG2 (d, ("out %d bytes\n", len)); 2126 } 2127 } 2128 ttwwakeup (tp); 2129 CX_UNLOCK (bd); 2130 splx (s); 2131} 2132 2133static int cx_param (struct tty *tp, struct termios *t) 2134{ 2135 drv_t *d; 2136 bdrv_t *bd; 2137 int s, bits, parity; 2138 2139 d = tp->t_sc; 2140 bd = d->board->sys; 2141 2142 s = splhigh (); 2143 CX_LOCK (bd); 2144 if (t->c_ospeed == 0) { 2145 /* Clear DTR and RTS. */ 2146 cx_set_dtr (d->chan, 0); 2147 CX_UNLOCK (bd); 2148 splx (s); 2149 CX_DEBUG2 (d, ("cx_param (hangup)\n")); 2150 return 0; 2151 } 2152 CX_DEBUG2 (d, ("cx_param\n")); 2153 2154 /* Check requested parameters. */ 2155 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) { 2156 CX_UNLOCK (bd); 2157 splx (s); 2158 return EINVAL; 2159 } 2160 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) { 2161 CX_UNLOCK (bd); 2162 splx (s); 2163 return EINVAL; 2164 } 2165 2166 /* And copy them to tty and channel structures. */ 2167 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed; 2168 tp->t_cflag = t->c_cflag; 2169 2170 /* Set character length and parity mode. */ 2171 switch (t->c_cflag & CSIZE) { 2172 default: 2173 case CS8: bits = 8; break; 2174 case CS7: bits = 7; break; 2175 case CS6: bits = 6; break; 2176 case CS5: bits = 5; break; 2177 } 2178 2179 parity = ((t->c_cflag & PARENB) ? 1 : 0) * 2180 (1 + ((t->c_cflag & PARODD) ? 0 : 1)); 2181 2182 /* Set current channel number. */ 2183 if (! d->chan->dtr) 2184 cx_set_dtr (d->chan, 1); 2185 2186 ttyldoptim (tp); 2187 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB), 2188 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS), 2189 (t->c_iflag & IXON), (t->c_iflag & IXANY), 2190 t->c_cc[VSTART], t->c_cc[VSTOP]); 2191 CX_UNLOCK (bd); 2192 splx (s); 2193 return 0; 2194} 2195 2196/* 2197 * Stop output on a line 2198 */ 2199static void cx_stop (struct tty *tp, int flag) 2200{ 2201 drv_t *d; 2202 bdrv_t *bd; 2203 int s; 2204 2205 d = tp->t_sc; 2206 bd = d->board->sys; 2207 2208 s = splhigh (); 2209 CX_LOCK (bd); 2210 if (tp->t_state & TS_BUSY) { 2211 /* Stop transmitter */ 2212 CX_DEBUG2 (d, ("cx_stop\n")); 2213 cx_transmitter_ctl (d->chan, 0); 2214 } 2215 CX_UNLOCK (bd); 2216 splx (s); 2217} 2218 2219/* 2220 * Process the (delayed) carrier signal setup. 2221 */ 2222static void cx_carrier (void *arg) 2223{ 2224 drv_t *d = arg; 2225 bdrv_t *bd = d->board->sys; 2226 cx_chan_t *c = d->chan; 2227 int s, cd; 2228 2229 s = splhigh (); 2230 CX_LOCK (bd); 2231 cd = cx_get_cd (c); 2232 if (d->cd != cd) { 2233 if (cd) { 2234 CX_DEBUG (d, ("carrier on\n")); 2235 d->cd = 1; 2236 CX_UNLOCK (bd); 2237 splx (s); 2238 if (d->tty) 2239 ttyld_modem(d->tty, 1); 2240 } else { 2241 CX_DEBUG (d, ("carrier loss\n")); 2242 d->cd = 0; 2243 CX_UNLOCK (bd); 2244 splx (s); 2245 if (d->tty) 2246 ttyld_modem(d->tty, 0); 2247 } 2248 } else { 2249 CX_UNLOCK (bd); 2250 splx (s); 2251 } 2252} 2253 2254/* 2255 * Modem signal callback function. 2256 */ 2257static void cx_modem (cx_chan_t *c) 2258{ 2259 drv_t *d = c->sys; 2260 2261 if (!d || c->mode != M_ASYNC) 2262 return; 2263 /* Handle carrier detect/loss. */ 2264 /* Carrier changed - delay processing DCD for a while 2265 * to give both sides some time to initialize. */ 2266 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d); 2267} 2268 2269#ifdef NETGRAPH 2270static int ng_cx_constructor (node_p node) 2271{ 2272 drv_t *d = NG_NODE_PRIVATE (node); 2273 CX_DEBUG (d, ("Constructor\n")); 2274 return EINVAL; 2275} 2276 2277static int ng_cx_newhook (node_p node, hook_p hook, const char *name) 2278{ 2279 int s; 2280 drv_t *d = NG_NODE_PRIVATE (node); 2281 bdrv_t *bd = d->board->sys; 2282 2283 if (d->chan->mode == M_ASYNC) 2284 return EINVAL; 2285 2286 /* Attach debug hook */ 2287 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) { 2288 NG_HOOK_SET_PRIVATE (hook, NULL); 2289 d->debug_hook = hook; 2290 return 0; 2291 } 2292 2293 /* Check for raw hook */ 2294 if (strcmp (name, NG_CX_HOOK_RAW) != 0) 2295 return EINVAL; 2296 2297 NG_HOOK_SET_PRIVATE (hook, d); 2298 d->hook = hook; 2299 s = splhigh (); 2300 CX_LOCK (bd); 2301 cx_up (d); 2302 CX_UNLOCK (bd); 2303 splx (s); 2304 return 0; 2305} 2306 2307static int print_modems (char *s, cx_chan_t *c, int need_header) 2308{ 2309 int status = cx_modem_status (c->sys); 2310 int length = 0; 2311 2312 if (need_header) 2313 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n"); 2314 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n", 2315 status & TIOCM_LE ? "On" : "-", 2316 status & TIOCM_DTR ? "On" : "-", 2317 status & TIOCM_DSR ? "On" : "-", 2318 status & TIOCM_RTS ? "On" : "-", 2319 status & TIOCM_CTS ? "On" : "-", 2320 status & TIOCM_CD ? "On" : "-"); 2321 return length; 2322} 2323 2324static int print_stats (char *s, cx_chan_t *c, int need_header) 2325{ 2326 int length = 0; 2327 2328 if (need_header) 2329 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n"); 2330 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n", 2331 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts, 2332 c->ierrs, c->obytes, c->opkts, c->oerrs); 2333 return length; 2334} 2335 2336static int print_chan (char *s, cx_chan_t *c) 2337{ 2338 drv_t *d = c->sys; 2339 int length = 0; 2340 2341 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num); 2342 if (d->chan->debug) 2343 length += sprintf (s + length, " debug=%d", d->chan->debug); 2344 2345 if (cx_get_baud (c)) 2346 length += sprintf (s + length, " %ld", cx_get_baud (c)); 2347 else 2348 length += sprintf (s + length, " extclock"); 2349 2350 if (c->mode == M_HDLC) { 2351 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off"); 2352 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off"); 2353 } 2354 2355 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n"); 2356 return length; 2357} 2358 2359static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook) 2360{ 2361 drv_t *d = NG_NODE_PRIVATE (node); 2362 struct ng_mesg *msg; 2363 struct ng_mesg *resp = NULL; 2364 int error = 0; 2365 2366 if (!d) 2367 return EINVAL; 2368 2369 CX_DEBUG (d, ("Rcvmsg\n")); 2370 NGI_GET_MSG (item, msg); 2371 switch (msg->header.typecookie) { 2372 default: 2373 error = EINVAL; 2374 break; 2375 2376 case NGM_CX_COOKIE: 2377 printf ("Don't forget to implement\n"); 2378 error = EINVAL; 2379 break; 2380 2381 case NGM_GENERIC_COOKIE: 2382 switch (msg->header.cmd) { 2383 default: 2384 error = EINVAL; 2385 break; 2386 2387 case NGM_TEXT_STATUS: { 2388 char *s; 2389 int l = 0; 2390 int dl = sizeof (struct ng_mesg) + 730; 2391 2392 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT); 2393 if (! resp) { 2394 error = ENOMEM; 2395 break; 2396 } 2397 bzero (resp, dl); 2398 s = (resp)->data; 2399 l += print_chan (s + l, d->chan); 2400 l += print_stats (s + l, d->chan, 1); 2401 l += print_modems (s + l, d->chan, 1); 2402 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRLEN); 2403 } 2404 break; 2405 } 2406 break; 2407 } 2408 NG_RESPOND_MSG (error, node, item, resp); 2409 NG_FREE_MSG (msg); 2410 return error; 2411} 2412 2413static int ng_cx_rcvdata (hook_p hook, item_p item) 2414{ 2415 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook)); 2416 struct mbuf *m; 2417 struct ng_tag_prio *ptag; 2418 bdrv_t *bd; 2419 struct ifqueue *q; 2420 int s; 2421 2422 NGI_GET_M (item, m); 2423 NG_FREE_ITEM (item); 2424 if (! NG_HOOK_PRIVATE (hook) || ! d) { 2425 NG_FREE_M (m); 2426 return ENETDOWN; 2427 } 2428 2429 bd = d->board->sys; 2430 /* Check for high priority data */ 2431 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE, 2432 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) ) 2433 q = &d->hi_queue; 2434 else 2435 q = &d->lo_queue; 2436 2437 s = splhigh (); 2438 CX_LOCK (bd); 2439 IF_LOCK (q); 2440 if (_IF_QFULL (q)) { 2441 _IF_DROP (q); 2442 IF_UNLOCK (q); 2443 CX_UNLOCK (bd); 2444 splx (s); 2445 NG_FREE_M (m); 2446 return ENOBUFS; 2447 } 2448 _IF_ENQUEUE (q, m); 2449 IF_UNLOCK (q); 2450 cx_start (d); 2451 CX_UNLOCK (bd); 2452 splx (s); 2453 return 0; 2454} 2455 2456static int ng_cx_rmnode (node_p node) 2457{ 2458 drv_t *d = NG_NODE_PRIVATE (node); 2459 bdrv_t *bd; 2460 2461 CX_DEBUG (d, ("Rmnode\n")); 2462 if (d && d->running) { 2463 int s = splhigh (); 2464 bd = d->board->sys; 2465 CX_LOCK (bd); 2466 cx_down (d); 2467 CX_UNLOCK (bd); 2468 splx (s); 2469 } 2470#ifdef KLD_MODULE 2471 if (node->nd_flags & NGF_REALLY_DIE) { 2472 NG_NODE_SET_PRIVATE (node, NULL); 2473 NG_NODE_UNREF (node); 2474 } 2475 NG_NODE_REVIVE(node); /* Persistant node */ 2476#endif 2477 return 0; 2478} 2479 2480static void ng_cx_watchdog (void *arg) 2481{ 2482 drv_t *d = arg; 2483 2484 if (d->timeout == 1) 2485 cx_watchdog (d); 2486 if (d->timeout) 2487 d->timeout--; 2488 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2489} 2490 2491static int ng_cx_connect (hook_p hook) 2492{ 2493 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2494 2495 callout_reset (&d->timeout_handle, hz, ng_cx_watchdog, d); 2496 return 0; 2497} 2498 2499static int ng_cx_disconnect (hook_p hook) 2500{ 2501 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook)); 2502 bdrv_t *bd = d->board->sys; 2503 int s; 2504 2505 s = splhigh (); 2506 CX_LOCK (bd); 2507 if (NG_HOOK_PRIVATE (hook)) 2508 cx_down (d); 2509 CX_UNLOCK (bd); 2510 splx (s); 2511 /* If we were wait it than it reasserted now, just stop it. */ 2512 if (!callout_drain (&d->timeout_handle)) 2513 callout_stop (&d->timeout_handle); 2514 return 0; 2515} 2516#endif /*NETGRAPH*/ 2517 2518static int cx_modevent (module_t mod, int type, void *unused) 2519{ 2520 static int load_count = 0; 2521 2522 switch (type) { 2523 case MOD_LOAD: 2524#ifdef NETGRAPH 2525 if (ng_newtype (&typestruct)) 2526 printf ("Failed to register ng_cx\n"); 2527#endif 2528 ++load_count; 2529 2530 callout_init (&timeout_handle, CALLOUT_MPSAFE); 2531 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 2532 /* Software interrupt. */ 2533 swi_add(&tty_intr_event, "cx", cx_softintr, NULL, SWI_TTY, 2534 INTR_MPSAFE, &cx_fast_ih); 2535 break; 2536 case MOD_UNLOAD: 2537 if (load_count == 1) { 2538 printf ("Removing device entry for Sigma\n"); 2539#ifdef NETGRAPH 2540 ng_rmtype (&typestruct); 2541#endif 2542 } 2543 /* If we were wait it than it reasserted now, just stop it. */ 2544 if (!callout_drain (&timeout_handle)) 2545 callout_stop (&timeout_handle); 2546 swi_remove (cx_fast_ih); 2547 --load_count; 2548 break; 2549 case MOD_SHUTDOWN: 2550 break; 2551 } 2552 return 0; 2553} 2554 2555#ifdef NETGRAPH 2556static struct ng_type typestruct = { 2557 .version = NG_ABI_VERSION, 2558 .name = NG_CX_NODE_TYPE, 2559 .constructor = ng_cx_constructor, 2560 .rcvmsg = ng_cx_rcvmsg, 2561 .shutdown = ng_cx_rmnode, 2562 .newhook = ng_cx_newhook, 2563 .connect = ng_cx_connect, 2564 .rcvdata = ng_cx_rcvdata, 2565 .disconnect = ng_cx_disconnect, 2566}; 2567#endif /*NETGRAPH*/ 2568 2569#ifdef NETGRAPH 2570MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 2571#else 2572MODULE_DEPEND (isa_cx, sppp, 1, 1, 1); 2573#endif 2574DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL); 2575MODULE_VERSION (cx, 1); 2576