if_cx.c revision 147256
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 147256 2005-06-10 16:49:24Z brooks $"); 27 28#include <sys/param.h> 29 30#include <sys/systm.h> 31#include <sys/kernel.h> 32#include <sys/module.h> 33#include <sys/proc.h> 34#include <sys/mbuf.h> 35#include <sys/sockio.h> 36#include <sys/malloc.h> 37#include <sys/socket.h> 38#include <sys/sysctl.h> 39#include <sys/conf.h> 40#include <sys/errno.h> 41#include <sys/serial.h> 42#include <sys/tty.h> 43#include <sys/bus.h> 44#include <machine/bus.h> 45#include <sys/rman.h> 46#include <isa/isavar.h> 47#include <sys/fcntl.h> 48#include <sys/interrupt.h> 49#include <vm/vm.h> 50#include <vm/pmap.h> 51#include <net/if.h> 52#include <machine/cpufunc.h> 53#include <machine/cserial.h> 54#include <machine/clock.h> 55#include <machine/resource.h> 56#include <dev/cx/machdep.h> 57#include <dev/cx/cxddk.h> 58#include <dev/cx/cronyxfw.h> 59#include "opt_ng_cronyx.h" 60#ifdef NETGRAPH_CRONYX 61# include "opt_netgraph.h" 62# include <netgraph/ng_message.h> 63# include <netgraph/netgraph.h> 64# include <dev/cx/ng_cx.h> 65#else 66# include <net/if_types.h> 67# include <net/if_sppp.h> 68# define PP_CISCO IFF_LINK2 69# include <net/bpf.h> 70#endif 71 72#define NCX 1 73 74/* If we don't have Cronyx's sppp version, we don't have fr support via sppp */ 75#ifndef PP_FR 76#define PP_FR 0 77#endif 78 79#define CX_DEBUG(d,s) ({if (d->chan->debug) {\ 80 printf ("%s: ", d->name); printf s;}}) 81#define CX_DEBUG2(d,s) ({if (d->chan->debug>1) {\ 82 printf ("%s: ", d->name); printf s;}}) 83 84#define CX_LOCK_NAME "cxX" 85 86static int cx_mpsafenet = 1; 87TUNABLE_INT("debug.cx.mpsafenet", &cx_mpsafenet); 88SYSCTL_NODE(_debug, OID_AUTO, cx, CTLFLAG_RD, 0, "Cronyx Sigma Adapters"); 89SYSCTL_INT(_debug_cx, OID_AUTO, mpsafenet, CTLFLAG_RD, &cx_mpsafenet, 0, 90 "Enable/disable MPSAFE network support for Cronyx Sigma Adapters"); 91 92#define CX_LOCK(_bd) do { \ 93 if (cx_mpsafenet) \ 94 mtx_lock (&(_bd)->cx_mtx); \ 95 } while (0) 96#define CX_UNLOCK(_bd) do { \ 97 if (cx_mpsafenet) \ 98 mtx_unlock (&(_bd)->cx_mtx); \ 99 } while (0) 100#define CX_LOCK_ASSERT(_bd) do { \ 101 if (cx_mpsafenet) \ 102 mtx_assert (&(_bd)->cx_mtx, MA_OWNED); \ 103 } while (0) 104 105typedef struct _async_q { 106 int beg; 107 int end; 108 #define BF_SZ 14400 109 int buf[BF_SZ+1]; 110} async_q; 111 112#define AQ_GSZ(q) ((BF_SZ + (q)->end - (q)->beg)%BF_SZ) 113#define AQ_PUSH(q,c) {*((q)->buf + (q)->end) = c;\ 114 (q)->end = ((q)->end + 1)%BF_SZ;} 115#define AQ_POP(q,c) {c = *((q)->buf + (q)->beg);\ 116 (q)->beg = ((q)->beg + 1)%BF_SZ;} 117 118static void cx_identify __P((driver_t *, device_t)); 119static int cx_probe __P((device_t)); 120static int cx_attach __P((device_t)); 121static int cx_detach __P((device_t)); 122static t_open_t cx_topen; 123static t_modem_t cx_tmodem; 124static t_close_t cx_tclose; 125 126static device_method_t cx_isa_methods [] = { 127 DEVMETHOD(device_identify, cx_identify), 128 DEVMETHOD(device_probe, cx_probe), 129 DEVMETHOD(device_attach, cx_attach), 130 DEVMETHOD(device_detach, cx_detach), 131 {0, 0} 132}; 133 134typedef struct _cx_dma_mem_t { 135 unsigned long phys; 136 void *virt; 137 size_t size; 138 bus_dma_tag_t dmat; 139 bus_dmamap_t mapp; 140} cx_dma_mem_t; 141 142typedef struct _drv_t { 143 char name [8]; 144 cx_chan_t *chan; 145 cx_board_t *board; 146 cx_dma_mem_t dmamem; 147 struct tty *tty; 148 struct callout dcd_timeout_handle; 149 unsigned callout; 150 unsigned lock; 151 int open_dev; 152 int cd; 153 int running; 154#ifdef NETGRAPH 155 char nodename [NG_NODELEN+1]; 156 hook_p hook; 157 hook_p debug_hook; 158 node_p node; 159 struct ifqueue lo_queue; 160 struct ifqueue hi_queue; 161 short timeout; 162 struct callout timeout_handle; 163#else 164 struct ifqueue queue; 165 struct ifnet *ifp; 166#endif 167 struct cdev *devt; 168 async_q aqueue; 169#define CX_READ 1 170#define CX_WRITE 2 171 int intr_action; 172 short atimeout; 173} drv_t; 174 175typedef struct _bdrv_t { 176 cx_board_t *board; 177 struct resource *base_res; 178 struct resource *drq_res; 179 struct resource *irq_res; 180 int base_rid; 181 int drq_rid; 182 int irq_rid; 183 void *intrhand; 184 drv_t channel [NCHAN]; 185 struct mtx cx_mtx; 186} bdrv_t; 187 188static driver_t cx_isa_driver = { 189 "cx", 190 cx_isa_methods, 191 sizeof (bdrv_t), 192}; 193 194static devclass_t cx_devclass; 195 196extern long csigma_fw_len; 197extern const char *csigma_fw_version; 198extern const char *csigma_fw_date; 199extern const char *csigma_fw_copyright; 200extern const cr_dat_tst_t csigma_fw_tvec[]; 201extern const u_char csigma_fw_data[]; 202static void cx_oproc (struct tty *tp); 203static int cx_param (struct tty *tp, struct termios *t); 204static void cx_stop (struct tty *tp, int flag); 205static void cx_receive (cx_chan_t *c, char *data, int len); 206static void cx_transmit (cx_chan_t *c, void *attachment, int len); 207static void cx_error (cx_chan_t *c, int data); 208static void cx_modem (cx_chan_t *c); 209static void cx_up (drv_t *d); 210static void cx_start (drv_t *d); 211static void cx_softintr (void *); 212static void *cx_fast_ih; 213static void cx_down (drv_t *d); 214static void cx_watchdog (drv_t *d); 215static void cx_carrier (void *arg); 216 217#ifdef NETGRAPH 218extern struct ng_type typestruct; 219#else 220static void cx_ifstart (struct ifnet *ifp); 221static void cx_tlf (struct sppp *sp); 222static void cx_tls (struct sppp *sp); 223static void cx_ifwatchdog (struct ifnet *ifp); 224static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data); 225static void cx_initialize (void *softc); 226#endif 227 228static cx_board_t *adapter [NCX]; 229static drv_t *channel [NCX*NCHAN]; 230static struct callout led_timo [NCX]; 231static struct callout timeout_handle; 232extern struct cdevsw cx_cdevsw; 233 234static int MY_SOFT_INTR; 235 236/* 237 * Print the mbuf chain, for debug purposes only. 238 */ 239static void printmbuf (struct mbuf *m) 240{ 241 printf ("mbuf:"); 242 for (; m; m=m->m_next) { 243 if (m->m_flags & M_PKTHDR) 244 printf (" HDR %d:", m->m_pkthdr.len); 245 if (m->m_flags & M_EXT) 246 printf (" EXT:"); 247 printf (" %d", m->m_len); 248 } 249 printf ("\n"); 250} 251 252/* 253 * Make an mbuf from data. 254 */ 255static struct mbuf *makembuf (void *buf, u_int len) 256{ 257 struct mbuf *m, *o, *p; 258 259 MGETHDR (m, M_DONTWAIT, MT_DATA); 260 261 if (! m) 262 return 0; 263 264 if (len >= MINCLSIZE) 265 MCLGET (m, M_DONTWAIT); 266 267 m->m_pkthdr.len = len; 268 m->m_len = 0; 269 270 p = m; 271 while (len) { 272 u_int n = M_TRAILINGSPACE (p); 273 if (n > len) 274 n = len; 275 if (! n) { 276 /* Allocate new mbuf. */ 277 o = p; 278 MGET (p, M_DONTWAIT, MT_DATA); 279 if (! p) { 280 m_freem (m); 281 return 0; 282 } 283 if (len >= MINCLSIZE) 284 MCLGET (p, M_DONTWAIT); 285 p->m_len = 0; 286 o->m_next = p; 287 288 n = M_TRAILINGSPACE (p); 289 if (n > len) 290 n = len; 291 } 292 bcopy (buf, mtod (p, caddr_t) + p->m_len, n); 293 294 p->m_len += n; 295 buf = n + (char*) buf; 296 len -= n; 297 } 298 return m; 299} 300 301/* 302 * Recover after lost transmit interrupts. 303 */ 304static void cx_timeout (void *arg) 305{ 306 drv_t *d; 307 int s, i, k; 308 309 for (i = 0; i < NCX; i++) { 310 if (adapter[i] == NULL) 311 continue; 312 for (k = 0; k < NCHAN; ++k) { 313 d = channel[i * NCHAN + k]; 314 if (! d) 315 continue; 316 s = splhigh (); 317 CX_LOCK ((bdrv_t *)d->board->sys); 318 if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) { 319 d->tty->t_state &= ~TS_BUSY; 320 if (d->tty->t_dev) { 321 d->intr_action |= CX_WRITE; 322 MY_SOFT_INTR = 1; 323 swi_sched (cx_fast_ih, 0); 324 } 325 CX_DEBUG (d, ("cx_timeout\n")); 326 } 327 if (d->atimeout) 328 d->atimeout--; 329 CX_UNLOCK ((bdrv_t *)d->board->sys); 330 splx (s); 331 } 332 } 333 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 334} 335 336static void cx_led_off (void *arg) 337{ 338 cx_board_t *b = arg; 339 bdrv_t *bd = b->sys; 340 int s; 341 342 s = splhigh (); 343 CX_LOCK (bd); 344 cx_led (b, 0); 345 CX_UNLOCK (bd); 346 splx (s); 347} 348 349/* 350 * Activate interupt handler from DDK. 351 */ 352static void cx_intr (void *arg) 353{ 354 bdrv_t *bd = arg; 355 cx_board_t *b = bd->board; 356#ifndef NETGRAPH 357 int i; 358#endif 359 int s = splhigh (); 360 361 CX_LOCK (bd); 362 /* Turn LED on. */ 363 cx_led (b, 1); 364 365 cx_int_handler (b); 366 367 /* Turn LED off 50 msec later. */ 368 callout_reset (&led_timo[b->num], hz/20, cx_led_off, b); 369 CX_UNLOCK (bd); 370 splx (s); 371 372#ifndef NETGRAPH 373 /* Pass packets in a lock-free state */ 374 for (i = 0; i < NCHAN && b->chan[i].type; i++) { 375 drv_t *d = b->chan[i].sys; 376 struct mbuf *m; 377 while (_IF_QLEN(&d->queue)) { 378 IF_DEQUEUE (&d->queue,m); 379 if (!m) 380 continue; 381 sppp_input (d->ifp, m); 382 } 383 } 384#endif 385} 386 387static int probe_irq (cx_board_t *b, int irq) 388{ 389 int mask, busy, cnt; 390 391 /* Clear pending irq, if any. */ 392 cx_probe_irq (b, -irq); 393 DELAY (100); 394 for (cnt=0; cnt<5; ++cnt) { 395 /* Get the mask of pending irqs, assuming they are busy. 396 * Activate the adapter on given irq. */ 397 busy = cx_probe_irq (b, irq); 398 DELAY (100); 399 400 /* Get the mask of active irqs. 401 * Deactivate our irq. */ 402 mask = cx_probe_irq (b, -irq); 403 DELAY (100); 404 if ((mask & ~busy) == 1 << irq) { 405 cx_probe_irq (b, 0); 406 /* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n", 407 b->num, irq, mask, busy); */ 408 return 1; 409 } 410 } 411 /* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n", 412 b->num, irq, mask, busy); */ 413 cx_probe_irq (b, 0); 414 return 0; 415} 416 417static short porttab [] = { 418 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 419 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 420}; 421static char dmatab [] = { 7, 6, 5, 0 }; 422static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 }; 423 424static int cx_is_free_res (device_t dev, int rid, int type, u_long start, 425 u_long end, u_long count) 426{ 427 struct resource *res; 428 429 if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count, 430 RF_ALLOCATED))) 431 return 0; 432 433 bus_release_resource (dev, type, rid, res); 434 435 return 1; 436} 437 438static void cx_identify (driver_t *driver, device_t dev) 439{ 440 u_long iobase, rescount; 441 int devcount; 442 device_t *devices; 443 device_t child; 444 devclass_t my_devclass; 445 int i, k; 446 447 if ((my_devclass = devclass_find ("cx")) == NULL) 448 return; 449 450 devclass_get_devices (my_devclass, &devices, &devcount); 451 452 if (devcount == 0) { 453 /* We should find all devices by our self. We could alter other 454 * devices, but we don't have a choise 455 */ 456 for (i = 0; (iobase = porttab [i]) != 0; i++) { 457 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 458 iobase, iobase + NPORT, NPORT)) 459 continue; 460 if (cx_probe_board (iobase, -1, -1) == 0) 461 continue; 462 463 devcount++; 464 465 child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx", 466 -1); 467 468 if (child == NULL) 469 return; 470 471 device_set_desc_copy (child, "Cronyx Sigma"); 472 device_set_driver (child, driver); 473 bus_set_resource (child, SYS_RES_IOPORT, 0, 474 iobase, NPORT); 475 476 if (devcount >= NCX) 477 break; 478 } 479 } else { 480 static short porttab [] = { 481 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 482 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0 483 }; 484 /* Lets check user choise. 485 */ 486 for (k = 0; k < devcount; k++) { 487 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 488 &iobase, &rescount) != 0) 489 continue; 490 491 for (i = 0; porttab [i] != 0; i++) { 492 if (porttab [i] != iobase) 493 continue; 494 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 495 iobase, iobase + NPORT, NPORT)) 496 continue; 497 if (cx_probe_board (iobase, -1, -1) == 0) 498 continue; 499 porttab [i] = -1; 500 device_set_desc_copy (devices[k], "Cronyx Sigma"); 501 break; 502 } 503 504 if (porttab [i] == 0) { 505 device_delete_child ( 506 device_get_parent (devices[k]), 507 devices [k]); 508 devices[k] = 0; 509 continue; 510 } 511 } 512 for (k = 0; k < devcount; k++) { 513 if (devices[k] == 0) 514 continue; 515 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0, 516 &iobase, &rescount) == 0) 517 continue; 518 for (i = 0; (iobase = porttab [i]) != 0; i++) { 519 if (porttab [i] == -1) { 520 continue; 521 } 522 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT, 523 iobase, iobase + NPORT, NPORT)) 524 continue; 525 if (cx_probe_board (iobase, -1, -1) == 0) 526 continue; 527 528 bus_set_resource (devices[k], SYS_RES_IOPORT, 0, 529 iobase, NPORT); 530 porttab [i] = -1; 531 device_set_desc_copy (devices[k], "Cronyx Sigma"); 532 break; 533 } 534 if (porttab [i] == 0) { 535 device_delete_child ( 536 device_get_parent (devices[k]), 537 devices [k]); 538 } 539 } 540 free (devices, M_TEMP); 541 } 542 543 return; 544} 545 546static int cx_probe (device_t dev) 547{ 548 int unit = device_get_unit (dev); 549 int i; 550 u_long iobase, rescount; 551 552 if (!device_get_desc (dev) || 553 strcmp (device_get_desc (dev), "Cronyx Sigma")) 554 return ENXIO; 555 556 if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) { 557 printf ("cx%d: Couldn't get IOPORT\n", unit); 558 return ENXIO; 559 } 560 561 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT, 562 iobase, iobase + NPORT, NPORT)) { 563 printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase); 564 return ENXIO; 565 } 566 567 for (i = 0; porttab [i] != 0; i++) { 568 if (porttab [i] == iobase) { 569 porttab [i] = -1; 570 break; 571 } 572 } 573 574 if (porttab [i] == 0) { 575 return ENXIO; 576 } 577 578 if (!cx_probe_board (iobase, -1, -1)) { 579 printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase); 580 return ENXIO; 581 } 582 583 return 0; 584} 585 586static void 587cx_bus_dmamap_addr (void *arg, bus_dma_segment_t *segs, int nseg, int error) 588{ 589 unsigned long *addr; 590 591 if (error) 592 return; 593 594 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 595 addr = arg; 596 *addr = segs->ds_addr; 597} 598 599static int 600cx_bus_dma_mem_alloc (int bnum, int cnum, cx_dma_mem_t *dmem) 601{ 602 int error; 603 604 error = bus_dma_tag_create (NULL, 16, 0, BUS_SPACE_MAXADDR_24BIT, 605 BUS_SPACE_MAXADDR, NULL, NULL, dmem->size, 1, 606 dmem->size, 0, NULL, NULL, &dmem->dmat); 607 if (error) { 608 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 609 else printf ("cx%d: ", bnum); 610 printf ("couldn't allocate tag for dma memory\n"); 611 return 0; 612 } 613 error = bus_dmamem_alloc (dmem->dmat, (void **)&dmem->virt, 614 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &dmem->mapp); 615 if (error) { 616 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 617 else printf ("cx%d: ", bnum); 618 printf ("couldn't allocate mem for dma memory\n"); 619 bus_dma_tag_destroy (dmem->dmat); 620 return 0; 621 } 622 error = bus_dmamap_load (dmem->dmat, dmem->mapp, dmem->virt, 623 dmem->size, cx_bus_dmamap_addr, &dmem->phys, 0); 624 if (error) { 625 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum); 626 else printf ("cx%d: ", bnum); 627 printf ("couldn't load mem map for dma memory\n"); 628 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 629 bus_dma_tag_destroy (dmem->dmat); 630 return 0; 631 } 632 return 1; 633} 634 635static void 636cx_bus_dma_mem_free (cx_dma_mem_t *dmem) 637{ 638 bus_dmamap_unload (dmem->dmat, dmem->mapp); 639 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp); 640 bus_dma_tag_destroy (dmem->dmat); 641} 642 643/* 644 * The adapter is present, initialize the driver structures. 645 */ 646static int cx_attach (device_t dev) 647{ 648 bdrv_t *bd = device_get_softc (dev); 649 u_long iobase, drq, irq, rescount; 650 int unit = device_get_unit (dev); 651 char *cx_ln = CX_LOCK_NAME; 652 cx_board_t *b; 653 cx_chan_t *c; 654 drv_t *d; 655 int i; 656 int s; 657 658 KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit)); 659 660 bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount); 661 bd->base_rid = 0; 662 bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid, 663 iobase, iobase + NPORT, NPORT, RF_ACTIVE); 664 if (! bd->base_res) { 665 printf ("cx%d: cannot allocate base address\n", unit); 666 return ENXIO; 667 } 668 669 if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) { 670 for (i = 0; (drq = dmatab [i]) != 0; i++) { 671 if (!cx_is_free_res (dev, 0, SYS_RES_DRQ, 672 drq, drq + 1, 1)) 673 continue; 674 bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1); 675 break; 676 } 677 678 if (dmatab[i] == 0) { 679 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 680 bd->base_res); 681 printf ("cx%d: Couldn't get DRQ\n", unit); 682 return ENXIO; 683 } 684 } 685 686 bd->drq_rid = 0; 687 bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid, 688 drq, drq + 1, 1, RF_ACTIVE); 689 if (! bd->drq_res) { 690 printf ("cx%d: cannot allocate drq\n", unit); 691 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 692 bd->base_res); 693 return ENXIO; 694 } 695 696 if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) { 697 for (i = 0; (irq = irqtab [i]) != 0; i++) { 698 if (!cx_is_free_res (dev, 0, SYS_RES_IRQ, 699 irq, irq + 1, 1)) 700 continue; 701 bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1); 702 break; 703 } 704 705 if (irqtab[i] == 0) { 706 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 707 bd->drq_res); 708 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 709 bd->base_res); 710 printf ("cx%d: Couldn't get IRQ\n", unit); 711 return ENXIO; 712 } 713 } 714 715 bd->irq_rid = 0; 716 bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid, 717 irq, irq + 1, 1, RF_ACTIVE); 718 if (! bd->irq_res) { 719 printf ("cx%d: Couldn't allocate irq\n", unit); 720 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 721 bd->drq_res); 722 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 723 bd->base_res); 724 return ENXIO; 725 } 726 727 b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK); 728 if (!b) { 729 printf ("cx:%d: Couldn't allocate memory\n", unit); 730 return (ENXIO); 731 } 732 adapter[unit] = b; 733 bzero (b, sizeof(cx_board_t)); 734 735 if (! cx_open_board (b, unit, iobase, irq, drq)) { 736 printf ("cx%d: error loading firmware\n", unit); 737 free (b, M_DEVBUF); 738 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 739 bd->irq_res); 740 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 741 bd->drq_res); 742 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 743 bd->base_res); 744 return ENXIO; 745 } 746 747 bd->board = b; 748 749 cx_ln[2] = '0' + unit; 750 mtx_init (&bd->cx_mtx, cx_ln, MTX_NETWORK_LOCK, MTX_DEF|MTX_RECURSE); 751 if (! probe_irq (b, irq)) { 752 printf ("cx%d: irq %ld not functional\n", unit, irq); 753 bd->board = 0; 754 adapter [unit] = 0; 755 mtx_destroy (&bd->cx_mtx); 756 free (b, M_DEVBUF); 757 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 758 bd->irq_res); 759 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 760 bd->drq_res); 761 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 762 bd->base_res); 763 return ENXIO; 764 } 765 b->sys = bd; 766 callout_init (&led_timo[b->num], cx_mpsafenet ? CALLOUT_MPSAFE : 0); 767 s = splhigh (); 768 if (bus_setup_intr (dev, bd->irq_res, 769 INTR_TYPE_NET|(cx_mpsafenet?INTR_MPSAFE:0), 770 cx_intr, bd, &bd->intrhand)) { 771 printf ("cx%d: Can't setup irq %ld\n", unit, irq); 772 bd->board = 0; 773 b->sys = 0; 774 adapter [unit] = 0; 775 mtx_destroy (&bd->cx_mtx); 776 free (b, M_DEVBUF); 777 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, 778 bd->irq_res); 779 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, 780 bd->drq_res); 781 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, 782 bd->base_res); 783 splx (s); 784 return ENXIO; 785 } 786 787 CX_LOCK (bd); 788 cx_init (b, b->num, b->port, irq, drq); 789 cx_setup_board (b, 0, 0, 0); 790 CX_UNLOCK (bd); 791 792 printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name); 793 794 for (c=b->chan; c<b->chan+NCHAN; ++c) { 795 if (c->type == T_NONE) 796 continue; 797 d = &bd->channel[c->num]; 798 d->dmamem.size = sizeof(cx_buf_t); 799 if (! cx_bus_dma_mem_alloc (unit, c->num, &d->dmamem)) 800 continue; 801 d->board = b; 802 d->chan = c; 803 d->open_dev = 0; 804 c->sys = d; 805 channel [b->num*NCHAN + c->num] = d; 806 sprintf (d->name, "cx%d.%d", b->num, c->num); 807 808 switch (c->type) { 809 case T_SYNC_RS232: 810 case T_SYNC_V35: 811 case T_SYNC_RS449: 812 case T_UNIV: 813 case T_UNIV_RS232: 814 case T_UNIV_RS449: 815 case T_UNIV_V35: 816#ifdef NETGRAPH 817 if (ng_make_node_common (&typestruct, &d->node) != 0) { 818 printf ("%s: cannot make common node\n", d->name); 819 channel [b->num*NCHAN + c->num] = 0; 820 c->sys = 0; 821 cx_bus_dma_mem_free (&d->dmamem); 822 continue; 823 } 824 NG_NODE_SET_PRIVATE (d->node, d); 825 sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE, 826 c->board->num*NCHAN + c->num); 827 if (ng_name_node (d->node, d->nodename)) { 828 printf ("%s: cannot name node\n", d->nodename); 829 NG_NODE_UNREF (d->node); 830 channel [b->num*NCHAN + c->num] = 0; 831 c->sys = 0; 832 cx_bus_dma_mem_free (&d->dmamem); 833 continue; 834 } 835 d->lo_queue.ifq_maxlen = IFQ_MAXLEN; 836 d->hi_queue.ifq_maxlen = IFQ_MAXLEN; 837 mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF); 838 mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF); 839 callout_init (&d->timeout_handle, 840 cx_mpsafenet ? CALLOUT_MPSAFE : 0); 841#else /*NETGRAPH*/ 842 d->ifp = if_alloc(IFT_PPP); 843 if (d->ifp == NULL) { 844 printf ("%s: cannot if_alloc() common interface\n", 845 d->name); 846 channel [b->num*NCHAN + c->num] = 0; 847 c->sys = 0; 848 cx_bus_dma_mem_free (&d->dmamem); 849 continue; 850 } 851 d->ifp->if_softc = d; 852 if_initname (d->ifp, "cx", b->num * NCHAN + c->num); 853 d->ifp->if_mtu = PP_MTU; 854 d->ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST | 855 IFF_NEEDSGIANT; 856 d->ifp->if_ioctl = cx_sioctl; 857 d->ifp->if_start = cx_ifstart; 858 d->ifp->if_watchdog = cx_ifwatchdog; 859 d->ifp->if_init = cx_initialize; 860 d->queue.ifq_maxlen = 2; 861 mtx_init (&d->queue.ifq_mtx, "cx_queue", NULL, MTX_DEF); 862 sppp_attach (d->ifp); 863 if_attach (d->ifp); 864 IFP2SP(d->ifp)->pp_tlf = cx_tlf; 865 IFP2SP(d->ifp)->pp_tls = cx_tls; 866 /* If BPF is in the kernel, call the attach for it. 867 * Size of PPP header is 4 bytes. */ 868 bpfattach (d->ifp, DLT_PPP, 4); 869#endif /*NETGRAPH*/ 870 } 871 d->tty = ttyalloc (); 872 d->tty->t_open = cx_topen; 873 d->tty->t_close = cx_tclose; 874 d->tty->t_param = cx_param; 875 d->tty->t_stop = cx_stop; 876 d->tty->t_modem = cx_tmodem; 877 d->tty->t_sc = d; 878 CX_LOCK (bd); 879 cx_start_chan (c, d->dmamem.virt, d->dmamem.phys); 880 cx_register_receive (c, &cx_receive); 881 cx_register_transmit (c, &cx_transmit); 882 cx_register_error (c, &cx_error); 883 cx_register_modem (c, &cx_modem); 884 CX_UNLOCK (bd); 885 886 ttycreate(d->tty, NULL, 0, MINOR_CALLOUT, 887 "x%r%r", b->num, c->num); 888 d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num); 889 d->devt->si_drv1 = d; 890 callout_init (&d->dcd_timeout_handle, 891 cx_mpsafenet ? CALLOUT_MPSAFE : 0); 892 } 893 splx (s); 894 895 return 0; 896} 897 898static int cx_detach (device_t dev) 899{ 900 bdrv_t *bd = device_get_softc (dev); 901 cx_board_t *b = bd->board; 902 cx_chan_t *c; 903 int s; 904 905 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized")); 906 907 s = splhigh (); 908 CX_LOCK (bd); 909 /* Check if the device is busy (open). */ 910 for (c = b->chan; c < b->chan + NCHAN; ++c) { 911 drv_t *d = (drv_t*) c->sys; 912 913 if (!d || d->chan->type == T_NONE) 914 continue; 915 if (d->lock) { 916 CX_UNLOCK (bd); 917 splx (s); 918 return EBUSY; 919 } 920 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 921 (d->open_dev|0x2)) { 922 CX_UNLOCK (bd); 923 splx (s); 924 return EBUSY; 925 } 926 if (d->running) { 927 CX_UNLOCK (bd); 928 splx (s); 929 return EBUSY; 930 } 931 } 932 933 /* Deactivate the timeout routine. And soft interrupt*/ 934 callout_stop (&led_timo[b->num]); 935 936 for (c = b->chan; c < b->chan + NCHAN; ++c) { 937 drv_t *d = c->sys; 938 939 if (!d || d->chan->type == T_NONE) 940 continue; 941 942 callout_stop (&d->dcd_timeout_handle); 943 } 944 CX_UNLOCK (bd); 945 bus_teardown_intr (dev, bd->irq_res, bd->intrhand); 946 bus_deactivate_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 947 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res); 948 949 bus_deactivate_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 950 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res); 951 952 bus_deactivate_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->irq_res); 953 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res); 954 955 CX_LOCK (bd); 956 cx_close_board (b); 957 958 /* Detach the interfaces, free buffer memory. */ 959 for (c = b->chan; c < b->chan + NCHAN; ++c) { 960 drv_t *d = (drv_t*) c->sys; 961 962 if (!d || d->chan->type == T_NONE) 963 continue; 964 965 if (d->tty) { 966 ttyfree (d->tty); 967 d->tty = NULL; 968 } 969 970#ifdef NETGRAPH 971 if (d->node) { 972 ng_rmnode_self (d->node); 973 NG_NODE_UNREF (d->node); 974 d->node = NULL; 975 } 976 mtx_destroy (&d->lo_queue.ifq_mtx); 977 mtx_destroy (&d->hi_queue.ifq_mtx); 978#else 979 /* Detach from the packet filter list of interfaces. */ 980 bpfdetach (d->ifp); 981 /* Detach from the sync PPP list. */ 982 sppp_detach (d->ifp); 983 984 if_detach (d->ifp); 985 if_free(d->ifp); 986 /* XXXRIK: check interconnection with irq handler */ 987 IF_DRAIN (&d->queue); 988 mtx_destroy (&d->queue.ifq_mtx); 989#endif 990 destroy_dev (d->devt); 991 } 992 993 cx_led_off (b); 994 CX_UNLOCK (bd); 995 callout_drain (&led_timo[b->num]); 996 for (c = b->chan; c < b->chan + NCHAN; ++c) { 997 drv_t *d = c->sys; 998 999 if (!d || d->chan->type == T_NONE) 1000 continue; 1001 1002 callout_drain (&d->dcd_timeout_handle); 1003 } 1004 splx (s); 1005 1006 s = splhigh (); 1007 for (c = b->chan; c < b->chan + NCHAN; ++c) { 1008 drv_t *d = (drv_t*) c->sys; 1009 1010 if (!d || d->chan->type == T_NONE) 1011 continue; 1012 1013 /* Deallocate buffers. */ 1014 cx_bus_dma_mem_free (&d->dmamem); 1015 } 1016 bd->board = 0; 1017 adapter [b->num] = 0; 1018 free (b, M_DEVBUF); 1019 splx (s); 1020 1021 mtx_destroy (&bd->cx_mtx); 1022 1023 return 0; 1024} 1025 1026#ifndef NETGRAPH 1027static void cx_ifstart (struct ifnet *ifp) 1028{ 1029 drv_t *d = ifp->if_softc; 1030 bdrv_t *bd = d->board->sys; 1031 1032 CX_LOCK (bd); 1033 cx_start (d); 1034 CX_UNLOCK (bd); 1035} 1036 1037static void cx_ifwatchdog (struct ifnet *ifp) 1038{ 1039 drv_t *d = ifp->if_softc; 1040 1041 cx_watchdog (d); 1042} 1043 1044static void cx_tlf (struct sppp *sp) 1045{ 1046 drv_t *d = SP2IFP(sp)->if_softc; 1047 1048 CX_DEBUG (d, ("cx_tlf\n")); 1049/* cx_set_dtr (d->chan, 0);*/ 1050/* cx_set_rts (d->chan, 0);*/ 1051 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1052 sp->pp_down (sp); 1053} 1054 1055static void cx_tls (struct sppp *sp) 1056{ 1057 drv_t *d = SP2IFP(sp)->if_softc; 1058 1059 CX_DEBUG (d, ("cx_tls\n")); 1060 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO)) 1061 sp->pp_up (sp); 1062} 1063 1064/* 1065 * Initialization of interface. 1066 * It seems to be never called by upper level. 1067 */ 1068static void cx_initialize (void *softc) 1069{ 1070 drv_t *d = softc; 1071 1072 CX_DEBUG (d, ("cx_initialize\n")); 1073} 1074 1075/* 1076 * Process an ioctl request. 1077 */ 1078static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data) 1079{ 1080 drv_t *d = ifp->if_softc; 1081 bdrv_t *bd = d->board->sys; 1082 int error, s, was_up, should_be_up; 1083 1084 /* No socket ioctls while the channel is in async mode. */ 1085 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC) 1086 return EBUSY; 1087 1088 /* Socket ioctls on slave subchannels are not allowed. */ 1089 was_up = (ifp->if_flags & IFF_RUNNING) != 0; 1090 error = sppp_ioctl (ifp, cmd, data); 1091 if (error) 1092 return error; 1093 1094 if (! (ifp->if_flags & IFF_DEBUG)) 1095 d->chan->debug = 0; 1096 else if (! d->chan->debug) 1097 d->chan->debug = 1; 1098 1099 switch (cmd) { 1100 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0; 1101 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0; 1102 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0; 1103 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break; 1104 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break; 1105 } 1106 1107 /* We get here only in case of SIFFLAGS or SIFADDR. */ 1108 s = splhigh (); 1109 CX_LOCK (bd); 1110 should_be_up = (ifp->if_flags & IFF_RUNNING) != 0; 1111 if (!was_up && should_be_up) { 1112 /* Interface goes up -- start it. */ 1113 cx_up (d); 1114 cx_start (d); 1115 } else if (was_up && !should_be_up) { 1116 /* Interface is going down -- stop it. */ 1117 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/ 1118 cx_down (d); 1119 } 1120 CX_UNLOCK (bd); 1121 splx (s); 1122 return 0; 1123} 1124#endif /*NETGRAPH*/ 1125 1126/* 1127 * Stop the interface. Called on splimp(). 1128 */ 1129static void cx_down (drv_t *d) 1130{ 1131 int s = splhigh (); 1132 CX_DEBUG (d, ("cx_down\n")); 1133 cx_set_dtr (d->chan, 0); 1134 cx_set_rts (d->chan, 0); 1135 d->running = 0; 1136 splx (s); 1137} 1138 1139/* 1140 * Start the interface. Called on splimp(). 1141 */ 1142static void cx_up (drv_t *d) 1143{ 1144 int s = splhigh (); 1145 CX_DEBUG (d, ("cx_up\n")); 1146 cx_set_dtr (d->chan, 1); 1147 cx_set_rts (d->chan, 1); 1148 d->running = 1; 1149 splx (s); 1150} 1151 1152/* 1153 * Start output on the (slave) interface. Get another datagram to send 1154 * off of the interface queue, and copy it to the interface 1155 * before starting the output. 1156 */ 1157static void cx_send (drv_t *d) 1158{ 1159 struct mbuf *m; 1160 u_short len; 1161 1162 CX_DEBUG2 (d, ("cx_send\n")); 1163 1164 /* No output if the interface is down. */ 1165 if (! d->running) 1166 return; 1167 1168 /* No output if the modem is off. */ 1169 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan)) 1170 return; 1171 1172 if (cx_buf_free (d->chan)) { 1173 /* Get the packet to send. */ 1174#ifdef NETGRAPH 1175 IF_DEQUEUE (&d->hi_queue, m); 1176 if (! m) 1177 IF_DEQUEUE (&d->lo_queue, m); 1178#else 1179 m = sppp_dequeue (d->ifp); 1180#endif 1181 if (! m) 1182 return; 1183#ifndef NETGRAPH 1184 if (d->ifp->if_bpf) 1185 BPF_MTAP (d->ifp, m); 1186#endif 1187 len = m->m_pkthdr.len; 1188 if (! m->m_next) 1189 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t), 1190 len, 0); 1191 else { 1192 u_char buf [DMABUFSZ]; 1193 m_copydata (m, 0, len, buf); 1194 cx_send_packet (d->chan, buf, len, 0); 1195 } 1196 m_freem (m); 1197 1198 /* Set up transmit timeout, 10 seconds. */ 1199#ifdef NETGRAPH 1200 d->timeout = 10; 1201#else 1202 d->ifp->if_timer = 10; 1203#endif 1204 } 1205#ifndef NETGRAPH 1206 d->ifp->if_flags |= IFF_OACTIVE; 1207#endif 1208} 1209 1210/* 1211 * Start output on the interface. 1212 * Always called on splimp(). 1213 */ 1214static void cx_start (drv_t *d) 1215{ 1216 int s = splhigh (); 1217 if (d->running) { 1218 if (! d->chan->dtr) 1219 cx_set_dtr (d->chan, 1); 1220 if (! d->chan->rts) 1221 cx_set_rts (d->chan, 1); 1222 cx_send (d); 1223 } 1224 splx (s); 1225} 1226 1227/* 1228 * Handle transmit timeouts. 1229 * Recover after lost transmit interrupts. 1230 * Always called on splimp(). 1231 */ 1232static void cx_watchdog (drv_t *d) 1233{ 1234 bdrv_t *bd = d->board->sys; 1235 1236 int s = splhigh (); 1237 CX_LOCK (bd); 1238 CX_DEBUG (d, ("device timeout\n")); 1239 if (d->running) { 1240 cx_setup_chan (d->chan); 1241 cx_start_chan (d->chan, 0, 0); 1242 cx_set_dtr (d->chan, 1); 1243 cx_set_rts (d->chan, 1); 1244 cx_start (d); 1245 } 1246 CX_UNLOCK (bd); 1247 splx (s); 1248} 1249 1250/* 1251 * Transmit callback function. 1252 */ 1253static void cx_transmit (cx_chan_t *c, void *attachment, int len) 1254{ 1255 drv_t *d = c->sys; 1256 1257 if (!d) 1258 return; 1259 1260 if (c->mode == M_ASYNC && d->tty) { 1261 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH); 1262 d->atimeout = 0; 1263 if (d->tty->t_dev) { 1264 d->intr_action |= CX_WRITE; 1265 MY_SOFT_INTR = 1; 1266 swi_sched (cx_fast_ih, 0); 1267 } 1268 return; 1269 } 1270#ifdef NETGRAPH 1271 d->timeout = 0; 1272#else 1273 ++d->ifp->if_opackets; 1274 d->ifp->if_flags &= ~IFF_OACTIVE; 1275 d->ifp->if_timer = 0; 1276#endif 1277 cx_start (d); 1278} 1279 1280/* 1281 * Process the received packet. 1282 */ 1283static void cx_receive (cx_chan_t *c, char *data, int len) 1284{ 1285 drv_t *d = c->sys; 1286 struct mbuf *m; 1287 char *cc = data; 1288#ifdef NETGRAPH 1289 int error; 1290#endif 1291 1292 if (!d) 1293 return; 1294 1295 if (c->mode == M_ASYNC && d->tty) { 1296 if (d->tty->t_state & TS_ISOPEN) { 1297 async_q *q = &d->aqueue; 1298 int size = BF_SZ - 1 - AQ_GSZ (q); 1299 1300 if (len <= 0 && !size) 1301 return; 1302 1303 if (len > size) { 1304 c->ierrs++; 1305 cx_error (c, CX_OVERRUN); 1306 len = size - 1; 1307 } 1308 1309 while (len--) { 1310 AQ_PUSH (q, *(unsigned char *)cc); 1311 cc++; 1312 } 1313 1314 d->intr_action |= CX_READ; 1315 MY_SOFT_INTR = 1; 1316 swi_sched (cx_fast_ih, 0); 1317 } 1318 return; 1319 } 1320 if (! d->running) 1321 return; 1322 1323 m = makembuf (data, len); 1324 if (! m) { 1325 CX_DEBUG (d, ("no memory for packet\n")); 1326#ifndef NETGRAPH 1327 ++d->ifp->if_iqdrops; 1328#endif 1329 return; 1330 } 1331 if (c->debug > 1) 1332 printmbuf (m); 1333#ifdef NETGRAPH 1334 m->m_pkthdr.rcvif = 0; 1335 NG_SEND_DATA_ONLY (error, d->hook, m); 1336#else 1337 ++d->ifp->if_ipackets; 1338 m->m_pkthdr.rcvif = d->ifp; 1339 /* Check if there's a BPF listener on this interface. 1340 * If so, hand off the raw packet to bpf. */ 1341 if (d->ifp->if_bpf) 1342 BPF_TAP (d->ifp, data, len); 1343 IF_ENQUEUE (&d->queue, m); 1344#endif 1345} 1346 1347#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\ 1348 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\ 1349 && (!(tp->t_iflag & PARMRK)\ 1350 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\ 1351 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\ 1352 && linesw[tp->t_line]->l_rint == ttyinput) 1353 1354/* 1355 * Error callback function. 1356 */ 1357static void cx_error (cx_chan_t *c, int data) 1358{ 1359 drv_t *d = c->sys; 1360 async_q *q; 1361 1362 if (!d) 1363 return; 1364 1365 q = &(d->aqueue); 1366 1367 switch (data) { 1368 case CX_FRAME: 1369 CX_DEBUG (d, ("frame error\n")); 1370 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1371 && (AQ_GSZ (q) < BF_SZ - 1) 1372 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1373 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1374 AQ_PUSH (q, TTY_FE); 1375 d->intr_action |= CX_READ; 1376 MY_SOFT_INTR = 1; 1377 swi_sched (cx_fast_ih, 0); 1378 } 1379#ifndef NETGRAPH 1380 else 1381 ++d->ifp->if_ierrors; 1382#endif 1383 break; 1384 case CX_CRC: 1385 CX_DEBUG (d, ("crc error\n")); 1386 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1387 && (AQ_GSZ (q) < BF_SZ - 1) 1388 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1389 || !(d->tty->t_iflag & INPCK) 1390 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) { 1391 AQ_PUSH (q, TTY_PE); 1392 d->intr_action |= CX_READ; 1393 MY_SOFT_INTR = 1; 1394 swi_sched (cx_fast_ih, 0); 1395 } 1396#ifndef NETGRAPH 1397 else 1398 ++d->ifp->if_ierrors; 1399#endif 1400 break; 1401 case CX_OVERRUN: 1402 CX_DEBUG (d, ("overrun error\n")); 1403#ifdef TTY_OE 1404 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1405 && (AQ_GSZ (q) < BF_SZ - 1) 1406 && (!CONDITION((&d->tty->t_termios), (d->tty)))) { 1407 AQ_PUSH (q, TTY_OE); 1408 d->intr_action |= CX_READ; 1409 MY_SOFT_INTR = 1; 1410 swi_sched (cx_fast_ih, 0); 1411 } 1412#endif 1413#ifndef NETGRAPH 1414 else { 1415 ++d->ifp->if_collisions; 1416 ++d->ifp->if_ierrors; 1417 } 1418#endif 1419 break; 1420 case CX_OVERFLOW: 1421 CX_DEBUG (d, ("overflow error\n")); 1422#ifndef NETGRAPH 1423 if (c->mode != M_ASYNC) 1424 ++d->ifp->if_ierrors; 1425#endif 1426 break; 1427 case CX_UNDERRUN: 1428 CX_DEBUG (d, ("underrun error\n")); 1429 if (c->mode != M_ASYNC) { 1430#ifdef NETGRAPH 1431 d->timeout = 0; 1432#else 1433 ++d->ifp->if_oerrors; 1434 d->ifp->if_flags &= ~IFF_OACTIVE; 1435 d->ifp->if_timer = 0; 1436 cx_start (d); 1437#endif 1438 } 1439 break; 1440 case CX_BREAK: 1441 CX_DEBUG (d, ("break error\n")); 1442 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) 1443 && (AQ_GSZ (q) < BF_SZ - 1) 1444 && (!CONDITION((&d->tty->t_termios), (d->tty)) 1445 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) { 1446 AQ_PUSH (q, TTY_BI); 1447 d->intr_action |= CX_READ; 1448 MY_SOFT_INTR = 1; 1449 swi_sched (cx_fast_ih, 0); 1450 } 1451#ifndef NETGRAPH 1452 else 1453 ++d->ifp->if_ierrors; 1454#endif 1455 break; 1456 default: 1457 CX_DEBUG (d, ("error #%d\n", data)); 1458 } 1459} 1460 1461static int cx_topen (struct tty *tp, struct cdev *dev) 1462{ 1463 bdrv_t *bd; 1464 drv_t *d; 1465 1466 d = tp->t_sc; 1467 CX_DEBUG2 (d, ("cx_open (serial)\n")); 1468 1469 bd = d->board->sys; 1470 1471 if (d->chan->mode != M_ASYNC) 1472 return (EBUSY); 1473 1474 d->open_dev |= 0x2; 1475 CX_LOCK (bd); 1476 cx_start_chan (d->chan, 0, 0); 1477 cx_set_dtr (d->chan, 1); 1478 cx_set_rts (d->chan, 1); 1479 d->cd = cx_get_cd (d->chan); 1480 CX_UNLOCK (bd); 1481 1482 CX_DEBUG2 (d, ("cx_open done\n")); 1483 1484 return 0; 1485} 1486 1487static void cx_tclose (struct tty *tp) 1488{ 1489 drv_t *d; 1490 bdrv_t *bd; 1491 1492 d = tp->t_sc; 1493 CX_DEBUG2 (d, ("cx_close\n")); 1494 bd = d->board->sys; 1495 CX_LOCK (bd); 1496 /* Disable receiver. 1497 * Transmitter continues sending the queued data. */ 1498 cx_enable_receive (d->chan, 0); 1499 CX_UNLOCK (bd); 1500 d->open_dev &= ~0x2; 1501} 1502 1503static int cx_tmodem (struct tty *tp, int sigon, int sigoff) 1504{ 1505 drv_t *d; 1506 bdrv_t *bd; 1507 1508 d = tp->t_sc; 1509 bd = d->board->sys; 1510 1511 CX_LOCK (bd); 1512 if (!sigon && !sigoff) { 1513 if (cx_get_dsr (d->chan)) sigon |= SER_DSR; 1514 if (cx_get_cd (d->chan)) sigon |= SER_DCD; 1515 if (cx_get_cts (d->chan)) sigon |= SER_CTS; 1516 if (d->chan->dtr) sigon |= SER_DTR; 1517 if (d->chan->rts) sigon |= SER_RTS; 1518 return sigon; 1519 } 1520 1521 if (sigon & SER_DTR) 1522 cx_set_dtr (d->chan, 1); 1523 if (sigoff & SER_DTR) 1524 cx_set_dtr (d->chan, 0); 1525 if (sigon & SER_RTS) 1526 cx_set_rts (d->chan, 1); 1527 if (sigoff & SER_RTS) 1528 cx_set_rts (d->chan, 0); 1529 CX_UNLOCK (bd); 1530 1531 return (0); 1532} 1533 1534static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td) 1535{ 1536 int unit; 1537 drv_t *d; 1538 1539 d = dev->si_drv1; 1540 unit = d->chan->num; 1541 1542 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n", 1543 unit, flag, mode)); 1544 1545 d->open_dev |= 0x1; 1546 1547 CX_DEBUG2 (d, ("cx_open done\n")); 1548 1549 return 0; 1550} 1551 1552static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td) 1553{ 1554 drv_t *d; 1555 1556 d = dev->si_drv1; 1557 CX_DEBUG2 (d, ("cx_close\n")); 1558 d->open_dev &= ~0x1; 1559 return 0; 1560} 1561 1562static int cx_modem_status (drv_t *d) 1563{ 1564 bdrv_t *bd = d->board->sys; 1565 int status = 0, s = splhigh (); 1566 CX_LOCK (bd); 1567 /* Already opened by someone or network interface is up? */ 1568 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1569 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running)) 1570 status = TIOCM_LE; /* always enabled while open */ 1571 1572 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR; 1573 if (cx_get_cd (d->chan)) status |= TIOCM_CD; 1574 if (cx_get_cts (d->chan)) status |= TIOCM_CTS; 1575 if (d->chan->dtr) status |= TIOCM_DTR; 1576 if (d->chan->rts) status |= TIOCM_RTS; 1577 CX_UNLOCK (bd); 1578 splx (s); 1579 return status; 1580} 1581 1582static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1583{ 1584 drv_t *d; 1585 bdrv_t *bd; 1586 cx_chan_t *c; 1587 struct serial_statistics *st; 1588 int error, s; 1589 char mask[16]; 1590 1591 d = dev->si_drv1; 1592 c = d->chan; 1593 1594 bd = d->board->sys; 1595 1596 switch (cmd) { 1597 case SERIAL_GETREGISTERED: 1598 CX_DEBUG2 (d, ("ioctl: getregistered\n")); 1599 bzero (mask, sizeof(mask)); 1600 for (s=0; s<NCX*NCHAN; ++s) 1601 if (channel [s]) 1602 mask [s/8] |= 1 << (s & 7); 1603 bcopy (mask, data, sizeof (mask)); 1604 return 0; 1605 1606 case SERIAL_GETPORT: 1607 CX_DEBUG2 (d, ("ioctl: getport\n")); 1608 s = splhigh (); 1609 CX_LOCK (bd); 1610 *(int *)data = cx_get_port (c); 1611 CX_UNLOCK (bd); 1612 splx (s); 1613 if (*(int *)data<0) 1614 return (EINVAL); 1615 else 1616 return 0; 1617 1618 case SERIAL_SETPORT: 1619 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1620 /* Only for superuser! */ 1621 error = suser (td); 1622 if (error) 1623 return error; 1624 1625 s = splhigh (); 1626 CX_LOCK (bd); 1627 cx_set_port (c, *(int *)data); 1628 CX_UNLOCK (bd); 1629 splx (s); 1630 return 0; 1631 1632#ifndef NETGRAPH 1633 case SERIAL_GETPROTO: 1634 CX_DEBUG2 (d, ("ioctl: getproto\n")); 1635 s = splhigh (); 1636 CX_LOCK (bd); 1637 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" : 1638 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" : 1639 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp"); 1640 CX_UNLOCK (bd); 1641 splx (s); 1642 return 0; 1643 1644 case SERIAL_SETPROTO: 1645 CX_DEBUG2 (d, ("ioctl: setproto\n")); 1646 /* Only for superuser! */ 1647 error = suser (td); 1648 if (error) 1649 return error; 1650 if (c->mode == M_ASYNC) 1651 return EBUSY; 1652 if (d->ifp->if_flags & IFF_RUNNING) 1653 return EBUSY; 1654 if (! strcmp ("cisco", (char*)data)) { 1655 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR); 1656 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1657 d->ifp->if_flags |= PP_CISCO; 1658 } else if (! strcmp ("fr", (char*)data)) { 1659 d->ifp->if_flags &= ~(PP_CISCO); 1660 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE; 1661 } else if (! strcmp ("ppp", (char*)data)) { 1662 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE); 1663 d->ifp->if_flags &= ~(PP_CISCO); 1664 } else 1665 return EINVAL; 1666 return 0; 1667 1668 case SERIAL_GETKEEPALIVE: 1669 CX_DEBUG2 (d, ("ioctl: getkeepalive\n")); 1670 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1671 (d->ifp->if_flags & PP_CISCO) || 1672 (c->mode == M_ASYNC)) 1673 return EINVAL; 1674 s = splhigh (); 1675 CX_LOCK (bd); 1676 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0; 1677 CX_UNLOCK (bd); 1678 splx (s); 1679 return 0; 1680 1681 case SERIAL_SETKEEPALIVE: 1682 CX_DEBUG2 (d, ("ioctl: setkeepalive\n")); 1683 /* Only for superuser! */ 1684 error = suser (td); 1685 if (error) 1686 return error; 1687 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || 1688 (d->ifp->if_flags & PP_CISCO)) 1689 return EINVAL; 1690 s = splhigh (); 1691 CX_LOCK (bd); 1692 if (*(int*)data) 1693 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE; 1694 else 1695 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE; 1696 CX_UNLOCK (bd); 1697 splx (s); 1698 return 0; 1699#endif /*NETGRAPH*/ 1700 1701 case SERIAL_GETMODE: 1702 CX_DEBUG2 (d, ("ioctl: getmode\n")); 1703 s = splhigh (); 1704 CX_LOCK (bd); 1705 *(int*)data = (c->mode == M_ASYNC) ? 1706 SERIAL_ASYNC : SERIAL_HDLC; 1707 CX_UNLOCK (bd); 1708 splx (s); 1709 return 0; 1710 1711 case SERIAL_SETMODE: 1712 CX_DEBUG2 (d, ("ioctl: setmode\n")); 1713 /* Only for superuser! */ 1714 error = suser (td); 1715 if (error) 1716 return error; 1717 1718 /* Somebody is waiting for carrier? */ 1719 if (d->lock) 1720 return EBUSY; 1721 /* /dev/ttyXX is already opened by someone? */ 1722 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) && 1723 (d->open_dev|0x2)) 1724 return EBUSY; 1725 /* Network interface is up? 1726 * Cannot change to async mode. */ 1727 if (c->mode != M_ASYNC && d->running && 1728 (*(int*)data == SERIAL_ASYNC)) 1729 return EBUSY; 1730 1731 s = splhigh (); 1732 CX_LOCK (bd); 1733 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) { 1734 cx_set_mode (c, M_ASYNC); 1735 cx_enable_receive (c, 0); 1736 cx_enable_transmit (c, 0); 1737 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) { 1738 cx_set_mode (c, M_HDLC); 1739 cx_enable_receive (c, 1); 1740 cx_enable_transmit (c, 1); 1741 } 1742 CX_UNLOCK (bd); 1743 splx (s); 1744 return 0; 1745 1746 case SERIAL_GETSTAT: 1747 CX_DEBUG2 (d, ("ioctl: getestat\n")); 1748 st = (struct serial_statistics*) data; 1749 s = splhigh (); 1750 CX_LOCK (bd); 1751 st->rintr = c->rintr; 1752 st->tintr = c->tintr; 1753 st->mintr = c->mintr; 1754 st->ibytes = c->ibytes; 1755 st->ipkts = c->ipkts; 1756 st->ierrs = c->ierrs; 1757 st->obytes = c->obytes; 1758 st->opkts = c->opkts; 1759 st->oerrs = c->oerrs; 1760 CX_UNLOCK (bd); 1761 splx (s); 1762 return 0; 1763 1764 case SERIAL_CLRSTAT: 1765 CX_DEBUG2 (d, ("ioctl: clrstat\n")); 1766 /* Only for superuser! */ 1767 error = suser (td); 1768 if (error) 1769 return error; 1770 s = splhigh (); 1771 CX_LOCK (bd); 1772 c->rintr = 0; 1773 c->tintr = 0; 1774 c->mintr = 0; 1775 c->ibytes = 0; 1776 c->ipkts = 0; 1777 c->ierrs = 0; 1778 c->obytes = 0; 1779 c->opkts = 0; 1780 c->oerrs = 0; 1781 CX_UNLOCK (bd); 1782 splx (s); 1783 return 0; 1784 1785 case SERIAL_GETBAUD: 1786 CX_DEBUG2 (d, ("ioctl: getbaud\n")); 1787 if (c->mode == M_ASYNC) 1788 return EINVAL; 1789 s = splhigh (); 1790 CX_LOCK (bd); 1791 *(long*)data = cx_get_baud(c); 1792 CX_UNLOCK (bd); 1793 splx (s); 1794 return 0; 1795 1796 case SERIAL_SETBAUD: 1797 CX_DEBUG2 (d, ("ioctl: setbaud\n")); 1798 /* Only for superuser! */ 1799 error = suser (td); 1800 if (error) 1801 return error; 1802 if (c->mode == M_ASYNC) 1803 return EINVAL; 1804 s = splhigh (); 1805 CX_LOCK (bd); 1806 cx_set_baud (c, *(long*)data); 1807 CX_UNLOCK (bd); 1808 splx (s); 1809 return 0; 1810 1811 case SERIAL_GETLOOP: 1812 CX_DEBUG2 (d, ("ioctl: getloop\n")); 1813 if (c->mode == M_ASYNC) 1814 return EINVAL; 1815 s = splhigh (); 1816 CX_LOCK (bd); 1817 *(int*)data = cx_get_loop (c); 1818 CX_UNLOCK (bd); 1819 splx (s); 1820 return 0; 1821 1822 case SERIAL_SETLOOP: 1823 CX_DEBUG2 (d, ("ioctl: setloop\n")); 1824 /* Only for superuser! */ 1825 error = suser (td); 1826 if (error) 1827 return error; 1828 if (c->mode == M_ASYNC) 1829 return EINVAL; 1830 s = splhigh (); 1831 CX_LOCK (bd); 1832 cx_set_loop (c, *(int*)data); 1833 CX_UNLOCK (bd); 1834 splx (s); 1835 return 0; 1836 1837 case SERIAL_GETDPLL: 1838 CX_DEBUG2 (d, ("ioctl: getdpll\n")); 1839 if (c->mode == M_ASYNC) 1840 return EINVAL; 1841 s = splhigh (); 1842 CX_LOCK (bd); 1843 *(int*)data = cx_get_dpll (c); 1844 CX_UNLOCK (bd); 1845 splx (s); 1846 return 0; 1847 1848 case SERIAL_SETDPLL: 1849 CX_DEBUG2 (d, ("ioctl: setdpll\n")); 1850 /* Only for superuser! */ 1851 error = suser (td); 1852 if (error) 1853 return error; 1854 if (c->mode == M_ASYNC) 1855 return EINVAL; 1856 s = splhigh (); 1857 CX_LOCK (bd); 1858 cx_set_dpll (c, *(int*)data); 1859 CX_UNLOCK (bd); 1860 splx (s); 1861 return 0; 1862 1863 case SERIAL_GETNRZI: 1864 CX_DEBUG2 (d, ("ioctl: getnrzi\n")); 1865 if (c->mode == M_ASYNC) 1866 return EINVAL; 1867 s = splhigh (); 1868 CX_LOCK (bd); 1869 *(int*)data = cx_get_nrzi (c); 1870 CX_UNLOCK (bd); 1871 splx (s); 1872 return 0; 1873 1874 case SERIAL_SETNRZI: 1875 CX_DEBUG2 (d, ("ioctl: setnrzi\n")); 1876 /* Only for superuser! */ 1877 error = suser (td); 1878 if (error) 1879 return error; 1880 if (c->mode == M_ASYNC) 1881 return EINVAL; 1882 s = splhigh (); 1883 CX_LOCK (bd); 1884 cx_set_nrzi (c, *(int*)data); 1885 CX_UNLOCK (bd); 1886 splx (s); 1887 return 0; 1888 1889 case SERIAL_GETDEBUG: 1890 CX_DEBUG2 (d, ("ioctl: getdebug\n")); 1891 s = splhigh (); 1892 CX_LOCK (bd); 1893 *(int*)data = c->debug; 1894 CX_UNLOCK (bd); 1895 splx (s); 1896 return 0; 1897 1898 case SERIAL_SETDEBUG: 1899 CX_DEBUG2 (d, ("ioctl: setdebug\n")); 1900 /* Only for superuser! */ 1901 error = suser (td); 1902 if (error) 1903 return error; 1904 s = splhigh (); 1905 CX_LOCK (bd); 1906 c->debug = *(int*)data; 1907 CX_UNLOCK (bd); 1908 splx (s); 1909#ifndef NETGRAPH 1910 if (d->chan->debug) 1911 d->ifp->if_flags |= IFF_DEBUG; 1912 else 1913 d->ifp->if_flags &= (~IFF_DEBUG); 1914#endif 1915 return 0; 1916 } 1917 1918 switch (cmd) { 1919 case TIOCSDTR: /* Set DTR */ 1920 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n")); 1921 s = splhigh (); 1922 CX_LOCK (bd); 1923 cx_set_dtr (c, 1); 1924 CX_UNLOCK (bd); 1925 splx (s); 1926 return 0; 1927 1928 case TIOCCDTR: /* Clear DTR */ 1929 CX_DEBUG2 (d, ("ioctl: tioccdtr\n")); 1930 s = splhigh (); 1931 CX_LOCK (bd); 1932 cx_set_dtr (c, 0); 1933 CX_UNLOCK (bd); 1934 splx (s); 1935 return 0; 1936 1937 case TIOCMSET: /* Set DTR/RTS */ 1938 CX_DEBUG2 (d, ("ioctl: tiocmset\n")); 1939 s = splhigh (); 1940 CX_LOCK (bd); 1941 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0); 1942 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0); 1943 CX_UNLOCK (bd); 1944 splx (s); 1945 return 0; 1946 1947 case TIOCMBIS: /* Add DTR/RTS */ 1948 CX_DEBUG2 (d, ("ioctl: tiocmbis\n")); 1949 s = splhigh (); 1950 CX_LOCK (bd); 1951 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1); 1952 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1); 1953 CX_UNLOCK (bd); 1954 splx (s); 1955 return 0; 1956 1957 case TIOCMBIC: /* Clear DTR/RTS */ 1958 CX_DEBUG2 (d, ("ioctl: tiocmbic\n")); 1959 s = splhigh (); 1960 CX_LOCK (bd); 1961 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0); 1962 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0); 1963 CX_UNLOCK (bd); 1964 splx (s); 1965 return 0; 1966 1967 case TIOCMGET: /* Get modem status */ 1968 CX_DEBUG2 (d, ("ioctl: tiocmget\n")); 1969 *(int*)data = cx_modem_status (d); 1970 return 0; 1971 1972 } 1973 1974 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd)); 1975 return ENOTTY; 1976} 1977 1978void cx_softintr (void *unused) 1979{ 1980 drv_t *d; 1981 bdrv_t *bd; 1982 async_q *q; 1983 int i, s, ic, k; 1984 while (MY_SOFT_INTR) { 1985 MY_SOFT_INTR = 0; 1986 for (i=0; i<NCX*NCHAN; ++i) { 1987 d = channel [i]; 1988 if (!d || !d->chan || d->chan->type == T_NONE 1989 || d->chan->mode != M_ASYNC || !d->tty 1990 || !d->tty->t_dev) 1991 continue; 1992 bd = d->board->sys; 1993 s = splhigh (); 1994 CX_LOCK (bd); 1995 if (d->intr_action & CX_READ) { 1996 q = &(d->aqueue); 1997 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) { 1998 k = AQ_GSZ(q); 1999 if (d->tty->t_rawq.c_cc + k > 2000 d->tty->t_ihiwat 2001 && (d->tty->t_cflag & CRTS_IFLOW 2002 || d->tty->t_iflag & IXOFF) 2003 && !(d->tty->t_state & TS_TBLOCK)) 2004 ttyblock(d->tty); 2005 d->tty->t_rawcc += k; 2006 while (k>0) { 2007 k--; 2008 AQ_POP (q, ic); 2009 CX_UNLOCK (bd); 2010 splx (s); 2011 putc (ic, &d->tty->t_rawq); 2012 s = splhigh (); 2013 CX_LOCK (bd); 2014 } 2015 ttwakeup(d->tty); 2016 if (d->tty->t_state & TS_TTSTOP 2017 && (d->tty->t_iflag & IXANY 2018 || d->tty->t_cc[VSTART] == 2019 d->tty->t_cc[VSTOP])) { 2020 d->tty->t_state &= ~TS_TTSTOP; 2021 d->tty->t_lflag &= ~FLUSHO; 2022 d->intr_action |= CX_WRITE; 2023 } 2024 } else { 2025 while (q->end != q->beg) { 2026 AQ_POP (q, ic); 2027 CX_UNLOCK (bd); 2028 splx (s); 2029 ttyld_rint (d->tty, ic); 2030 s = splhigh (); 2031 CX_LOCK (bd); 2032 } 2033 } 2034 d->intr_action &= ~CX_READ; 2035 } 2036 splx (s); 2037 CX_UNLOCK (bd); 2038 2039 s = splhigh (); 2040 CX_LOCK (bd); 2041 if (d->intr_action & CX_WRITE) { 2042 if (d->tty->t_line) 2043 ttyld_start (d->tty); 2044 else 2045 cx_oproc (d->tty); 2046 d->intr_action &= ~CX_WRITE; 2047 } 2048 CX_UNLOCK (bd); 2049 splx (s); 2050 2051 } 2052 } 2053} 2054 2055/* 2056 * Fill transmitter buffer with data. 2057 */ 2058static void cx_oproc (struct tty *tp) 2059{ 2060 int s, k; 2061 drv_t *d; 2062 bdrv_t *bd; 2063 static u_char buf[DMABUFSZ]; 2064 u_char *p; 2065 u_short len = 0, sublen = 0; 2066 2067 d = tp->t_sc; 2068 bd = d->board->sys; 2069 2070 CX_DEBUG2 (d, ("cx_oproc\n")); 2071 2072 s = splhigh (); 2073 CX_LOCK (bd); 2074 2075 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts) 2076 cx_set_rts (d->chan, 0); 2077 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts) 2078 cx_set_rts (d->chan, 1); 2079 2080 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) { 2081 /* Start transmitter. */ 2082 cx_enable_transmit (d->chan, 1); 2083 2084 /* Is it busy? */ 2085 if (! cx_buf_free (d->chan)) { 2086 tp->t_state |= TS_BUSY; 2087 CX_UNLOCK (bd); 2088 splx (s); 2089 return; 2090 } 2091 if (tp->t_iflag & IXOFF) { 2092 p = (buf + (DMABUFSZ/2)); 2093 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2094 k = sublen; 2095 while (k--) { 2096 /* Send XON/XOFF out of band. */ 2097 if (*p == tp->t_cc[VSTOP]) { 2098 cx_xflow_ctl (d->chan, 0); 2099 p++; 2100 continue; 2101 } 2102 if (*p == tp->t_cc[VSTART]) { 2103 cx_xflow_ctl (d->chan, 1); 2104 p++; 2105 continue; 2106 } 2107 buf[len] = *p; 2108 len++; 2109 p++; 2110 } 2111 } else { 2112 p = buf; 2113 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2)); 2114 } 2115 if (len) { 2116 cx_send_packet (d->chan, buf, len, 0); 2117 tp->t_state |= TS_BUSY; 2118 d->atimeout = 10; 2119 CX_DEBUG2 (d, ("out %d bytes\n", len)); 2120 } 2121 } 2122 ttwwakeup (tp); 2123 CX_UNLOCK (bd); 2124 splx (s); 2125} 2126 2127static int cx_param (struct tty *tp, struct termios *t) 2128{ 2129 drv_t *d; 2130 bdrv_t *bd; 2131 int s, bits, parity; 2132 2133 d = tp->t_sc; 2134 bd = d->board->sys; 2135 2136 s = splhigh (); 2137 CX_LOCK (bd); 2138 if (t->c_ospeed == 0) { 2139 /* Clear DTR and RTS. */ 2140 cx_set_dtr (d->chan, 0); 2141 CX_UNLOCK (bd); 2142 splx (s); 2143 CX_DEBUG2 (d, ("cx_param (hangup)\n")); 2144 return 0; 2145 } 2146 CX_DEBUG2 (d, ("cx_param\n")); 2147 2148 /* Check requested parameters. */ 2149 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) { 2150 CX_UNLOCK (bd); 2151 splx (s); 2152 return EINVAL; 2153 } 2154 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) { 2155 CX_UNLOCK (bd); 2156 splx (s); 2157 return EINVAL; 2158 } 2159 2160 /* And copy them to tty and channel structures. */ 2161 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed; 2162 tp->t_cflag = t->c_cflag; 2163 2164 /* Set character length and parity mode. */ 2165 switch (t->c_cflag & CSIZE) { 2166 default: 2167 case CS8: bits = 8; break; 2168 case CS7: bits = 7; break; 2169 case CS6: bits = 6; break; 2170 case CS5: bits = 5; break; 2171 } 2172 2173 parity = ((t->c_cflag & PARENB) ? 1 : 0) * 2174 (1 + ((t->c_cflag & PARODD) ? 0 : 1)); 2175 2176 /* Set current channel number. */ 2177 if (! d->chan->dtr) 2178 cx_set_dtr (d->chan, 1); 2179 2180 ttyldoptim (tp); 2181 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB), 2182 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS), 2183 (t->c_iflag & IXON), (t->c_iflag & IXANY), 2184 t->c_cc[VSTART], t->c_cc[VSTOP]); 2185 CX_UNLOCK (bd); 2186 splx (s); 2187 return 0; 2188} 2189 2190/* 2191 * Stop output on a line 2192 */ 2193static void cx_stop (struct tty *tp, int flag) 2194{ 2195 drv_t *d; 2196 bdrv_t *bd; 2197 int s; 2198 2199 d = tp->t_sc; 2200 bd = d->board->sys; 2201 2202 s = splhigh (); 2203 CX_LOCK (bd); 2204 if (tp->t_state & TS_BUSY) { 2205 /* Stop transmitter */ 2206 CX_DEBUG2 (d, ("cx_stop\n")); 2207 cx_transmitter_ctl (d->chan, 0); 2208 } 2209 CX_UNLOCK (bd); 2210 splx (s); 2211} 2212 2213/* 2214 * Process the (delayed) carrier signal setup. 2215 */ 2216static void cx_carrier (void *arg) 2217{ 2218 drv_t *d = arg; 2219 bdrv_t *bd = d->board->sys; 2220 cx_chan_t *c = d->chan; 2221 int s, cd; 2222 2223 s = splhigh (); 2224 CX_LOCK (bd); 2225 cd = cx_get_cd (c); 2226 if (d->cd != cd) { 2227 if (cd) { 2228 CX_DEBUG (d, ("carrier on\n")); 2229 d->cd = 1; 2230 CX_UNLOCK (bd); 2231 splx (s); 2232 if (d->tty) 2233 ttyld_modem(d->tty, 1); 2234 } else { 2235 CX_DEBUG (d, ("carrier loss\n")); 2236 d->cd = 0; 2237 CX_UNLOCK (bd); 2238 splx (s); 2239 if (d->tty) 2240 ttyld_modem(d->tty, 0); 2241 } 2242 } 2243} 2244 2245/* 2246 * Modem signal callback function. 2247 */ 2248static void cx_modem (cx_chan_t *c) 2249{ 2250 drv_t *d = c->sys; 2251 2252 if (!d || c->mode != M_ASYNC) 2253 return; 2254 /* Handle carrier detect/loss. */ 2255 /* Carrier changed - delay processing DCD for a while 2256 * to give both sides some time to initialize. */ 2257 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d); 2258} 2259 2260static struct cdevsw cx_cdevsw = { 2261 .d_version = D_VERSION, 2262 .d_open = cx_open, 2263 .d_close = cx_close, 2264 .d_ioctl = cx_ioctl, 2265 .d_name = "cx", 2266 .d_flags = D_TTY | D_NEEDGIANT, 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 if (!debug_mpsafenet && cx_mpsafenet) { 2523 printf ("WORNING! Network stack is not MPSAFE. " 2524 "Turning off debug.cx.mpsafenet.\n"); 2525 cx_mpsafenet = 0; 2526 } 2527 if (cx_mpsafenet) 2528 cx_cdevsw.d_flags &= ~D_NEEDGIANT; 2529 2530 switch (type) { 2531 case MOD_LOAD: 2532#ifdef NETGRAPH 2533 if (ng_newtype (&typestruct)) 2534 printf ("Failed to register ng_cx\n"); 2535#endif 2536 ++load_count; 2537 2538 callout_init (&timeout_handle, cx_mpsafenet?CALLOUT_MPSAFE:0); 2539 callout_reset (&timeout_handle, hz*5, cx_timeout, 0); 2540 /* Software interrupt. */ 2541 swi_add(&tty_ithd, "cx", cx_softintr, NULL, SWI_TTY, 2542 (cx_mpsafenet?INTR_MPSAFE:0), &cx_fast_ih); 2543 break; 2544 case MOD_UNLOAD: 2545 if (load_count == 1) { 2546 printf ("Removing device entry for Sigma\n"); 2547#ifdef NETGRAPH 2548 ng_rmtype (&typestruct); 2549#endif 2550 } 2551 /* If we were wait it than it reasserted now, just stop it. */ 2552 if (!callout_drain (&timeout_handle)) 2553 callout_stop (&timeout_handle); 2554 ithread_remove_handler (cx_fast_ih); 2555 --load_count; 2556 break; 2557 case MOD_SHUTDOWN: 2558 break; 2559 } 2560 return 0; 2561} 2562 2563#ifdef NETGRAPH 2564static struct ng_type typestruct = { 2565 .version = NG_ABI_VERSION, 2566 .name = NG_CX_NODE_TYPE, 2567 .constructor = ng_cx_constructor, 2568 .rcvmsg = ng_cx_rcvmsg, 2569 .shutdown = ng_cx_rmnode, 2570 .newhook = ng_cx_newhook, 2571 .connect = ng_cx_connect, 2572 .rcvdata = ng_cx_rcvdata, 2573 .disconnect = ng_cx_disconnect, 2574}; 2575#endif /*NETGRAPH*/ 2576 2577#ifdef NETGRAPH 2578MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 2579#else 2580MODULE_DEPEND (isa_cx, sppp, 1, 1, 1); 2581#endif 2582DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL); 2583MODULE_VERSION (cx, 1); 2584