1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2003 Hidetoshi Shimokawa 5 * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the acknowledgement as bellow: 18 * 19 * This product includes software developed by K. Kobayashi and H. Shimokawa 20 * 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 26 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 27 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 28 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 32 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 33 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 #include <sys/param.h> 38 #include <sys/conf.h> 39 #include <sys/eventhandler.h> 40 #include <sys/jail.h> 41 #include <sys/kernel.h> 42 #include <sys/kthread.h> 43 #include <sys/malloc.h> 44 #include <sys/module.h> 45 #include <sys/sysctl.h> 46 #include <sys/systm.h> 47 48 #include <sys/kdb.h> 49 #include <sys/bus.h> /* used by smbus and newbus */ 50 #include <machine/bus.h> 51 52 #include <dev/firewire/firewire.h> 53 #include <dev/firewire/firewirereg.h> 54 #include <dev/firewire/fwmem.h> 55 #include <dev/firewire/iec13213.h> 56 #include <dev/firewire/iec68113.h> 57 58 struct crom_src_buf { 59 struct crom_src src; 60 struct crom_chunk root; 61 struct crom_chunk vendor; 62 struct crom_chunk hw; 63 }; 64 65 int firewire_debug = 0, try_bmr = 1, hold_count = 0; 66 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0, 67 "FireWire driver debug flag"); 68 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 69 "FireWire Subsystem"); 70 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0, 71 "Try to be a bus manager"); 72 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0, 73 "Number of count of bus resets for removing lost device information"); 74 75 MALLOC_DEFINE(M_FW, "firewire", "FireWire"); 76 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire"); 77 78 #define FW_MAXASYRTY 4 79 80 devclass_t firewire_devclass; 81 82 static void firewire_identify(driver_t *, device_t); 83 static int firewire_probe(device_t); 84 static int firewire_attach(device_t); 85 static int firewire_detach(device_t); 86 static int firewire_resume(device_t); 87 static void firewire_xfer_timeout(void *, int); 88 static device_t firewire_add_child(device_t, u_int, const char *, int); 89 static void fw_try_bmr(void *); 90 static void fw_try_bmr_callback(struct fw_xfer *); 91 static void fw_asystart(struct fw_xfer *); 92 static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *); 93 static void fw_bus_probe(void *); 94 static void fw_attach_dev(struct firewire_comm *); 95 static void fw_bus_probe_thread(void *); 96 #ifdef FW_VMACCESS 97 static void fw_vmaccess (struct fw_xfer *); 98 #endif 99 static int fw_bmr (struct firewire_comm *); 100 static void fw_dump_hdr(struct fw_pkt *, char *); 101 102 static device_method_t firewire_methods[] = { 103 /* Device interface */ 104 DEVMETHOD(device_identify, firewire_identify), 105 DEVMETHOD(device_probe, firewire_probe), 106 DEVMETHOD(device_attach, firewire_attach), 107 DEVMETHOD(device_detach, firewire_detach), 108 DEVMETHOD(device_suspend, bus_generic_suspend), 109 DEVMETHOD(device_resume, firewire_resume), 110 DEVMETHOD(device_shutdown, bus_generic_shutdown), 111 112 /* Bus interface */ 113 DEVMETHOD(bus_add_child, firewire_add_child), 114 115 DEVMETHOD_END 116 }; 117 118 char *linkspeed[] = { 119 "S100", "S200", "S400", "S800", 120 "S1600", "S3200", "undef", "undef" 121 }; 122 123 static char *tcode_str[] = { 124 "WREQQ", "WREQB", "WRES", "undef", 125 "RREQQ", "RREQB", "RRESQ", "RRESB", 126 "CYCS", "LREQ", "STREAM", "LRES", 127 "undef", "undef", "PHY", "undef" 128 }; 129 130 /* IEEE-1394a Table C-2 Gap count as a function of hops*/ 131 #define MAX_GAPHOP 15 132 u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18, 133 21, 24, 26, 29, 32, 35, 37, 40}; 134 135 static driver_t firewire_driver = { 136 "firewire", 137 firewire_methods, 138 sizeof(struct firewire_softc), 139 }; 140 141 /* 142 * Lookup fwdev by node id. 143 */ 144 struct fw_device * 145 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst) 146 { 147 struct fw_device *fwdev; 148 149 FW_GLOCK(fc); 150 STAILQ_FOREACH(fwdev, &fc->devices, link) 151 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL) 152 break; 153 FW_GUNLOCK(fc); 154 155 return fwdev; 156 } 157 158 /* 159 * Lookup fwdev by EUI64. 160 */ 161 struct fw_device * 162 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui) 163 { 164 struct fw_device *fwdev; 165 166 FW_GLOCK(fc); 167 STAILQ_FOREACH(fwdev, &fc->devices, link) 168 if (FW_EUI64_EQUAL(fwdev->eui, *eui)) 169 break; 170 FW_GUNLOCK(fc); 171 172 if (fwdev == NULL) 173 return NULL; 174 if (fwdev->status == FWDEVINVAL) 175 return NULL; 176 return fwdev; 177 } 178 179 /* 180 * Async. request procedure for userland application. 181 */ 182 int 183 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer) 184 { 185 int err = 0; 186 struct fw_xferq *xferq; 187 int len; 188 struct fw_pkt *fp; 189 int tcode; 190 struct tcode_info *info; 191 192 if (xfer == NULL) 193 return EINVAL; 194 if (xfer->hand == NULL) { 195 printf("hand == NULL\n"); 196 return EINVAL; 197 } 198 fp = &xfer->send.hdr; 199 200 tcode = fp->mode.common.tcode & 0xf; 201 info = &fc->tcode[tcode]; 202 if (info->flag == 0) { 203 printf("invalid tcode=%x\n", tcode); 204 return EINVAL; 205 } 206 207 /* Reject non-CSR transactions until bus exploration completes */ 208 if ((fc->status < FWBUSEXPLORE) && 209 ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) || 210 (fp->mode.rreqq.dest_lo < 0xf0000000) || 211 (fp->mode.rreqq.dest_lo >= 0xf0001000))) { 212 xfer->resp = EAGAIN; 213 xfer->flag = FWXF_BUSY; 214 return (EAGAIN); 215 } 216 217 if (info->flag & FWTI_REQ) 218 xferq = fc->atq; 219 else 220 xferq = fc->ats; 221 len = info->hdr_len; 222 if (xfer->send.pay_len > MAXREC(fc->maxrec)) { 223 printf("send.pay_len > maxrec\n"); 224 return EINVAL; 225 } 226 if (info->flag & FWTI_BLOCK_STR) 227 len = fp->mode.stream.len; 228 else if (info->flag & FWTI_BLOCK_ASY) 229 len = fp->mode.rresb.len; 230 else 231 len = 0; 232 if (len != xfer->send.pay_len) { 233 printf("len(%d) != send.pay_len(%d) %s(%x)\n", 234 len, xfer->send.pay_len, tcode_str[tcode], tcode); 235 return EINVAL; 236 } 237 238 if (xferq->start == NULL) { 239 printf("xferq->start == NULL\n"); 240 return EINVAL; 241 } 242 if (!(xferq->queued < xferq->maxq)) { 243 device_printf(fc->bdev, "Discard a packet (queued=%d)\n", 244 xferq->queued); 245 return EAGAIN; 246 } 247 248 xfer->tl = -1; 249 if (info->flag & FWTI_TLABEL) { 250 if (fw_get_tlabel(fc, xfer) < 0) 251 return EAGAIN; 252 } 253 254 xfer->resp = 0; 255 xfer->fc = fc; 256 xfer->q = xferq; 257 258 fw_asystart(xfer); 259 return err; 260 } 261 262 /* 263 * Wakeup blocked process. 264 */ 265 void 266 fw_xferwake(struct fw_xfer *xfer) 267 { 268 struct mtx *lock = &xfer->fc->wait_lock; 269 270 mtx_lock(lock); 271 xfer->flag |= FWXF_WAKE; 272 mtx_unlock(lock); 273 274 wakeup(xfer); 275 return; 276 } 277 278 int 279 fw_xferwait(struct fw_xfer *xfer) 280 { 281 struct mtx *lock = &xfer->fc->wait_lock; 282 int err = 0; 283 284 mtx_lock(lock); 285 while ((xfer->flag & FWXF_WAKE) == 0) 286 err = msleep(xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0); 287 mtx_unlock(lock); 288 289 return (err); 290 } 291 292 /* 293 * Async. request with given xfer structure. 294 */ 295 static void 296 fw_asystart(struct fw_xfer *xfer) 297 { 298 struct firewire_comm *fc = xfer->fc; 299 300 /* Protect from interrupt/timeout */ 301 FW_GLOCK(fc); 302 xfer->flag = FWXF_INQ; 303 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); 304 #if 0 305 xfer->q->queued++; 306 #endif 307 FW_GUNLOCK(fc); 308 /* Kick DMA for non-mbuf xfers */ 309 if (xfer->mbuf == NULL) 310 xfer->q->start(fc); 311 return; 312 } 313 314 static void 315 firewire_identify(driver_t *driver, device_t parent) 316 { 317 BUS_ADD_CHILD(parent, 0, "firewire", DEVICE_UNIT_ANY); 318 } 319 320 static int 321 firewire_probe(device_t dev) 322 { 323 device_set_desc(dev, "IEEE1394(FireWire) bus"); 324 return (0); 325 } 326 327 /* Just use a per-packet callout? */ 328 static void 329 firewire_xfer_timeout(void *arg, int pending) 330 { 331 struct firewire_comm *fc = (struct firewire_comm *)arg; 332 struct fw_xfer *xfer, *txfer; 333 struct timeval tv; 334 struct timeval split_timeout; 335 STAILQ_HEAD(, fw_xfer) xfer_timeout; 336 int i; 337 338 split_timeout.tv_sec = 0; 339 split_timeout.tv_usec = 200 * 1000; /* 200 msec */ 340 341 microtime(&tv); 342 timevalsub(&tv, &split_timeout); 343 STAILQ_INIT(&xfer_timeout); 344 345 mtx_lock(&fc->tlabel_lock); 346 for (i = 0; i < nitems(fc->tlabels); i++) { 347 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 348 if ((xfer->flag & FWXF_SENT) == 0) 349 /* not sent yet */ 350 break; 351 if (timevalcmp(&xfer->tv, &tv, >)) 352 /* the rests are newer than this */ 353 break; 354 device_printf(fc->bdev, 355 "split transaction timeout: tl=0x%x flag=0x%02x\n", 356 i, xfer->flag); 357 fw_dump_hdr(&xfer->send.hdr, "send"); 358 xfer->resp = ETIMEDOUT; 359 xfer->tl = -1; 360 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 361 STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel); 362 } 363 } 364 mtx_unlock(&fc->tlabel_lock); 365 fc->timeout(fc); 366 367 STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer) 368 xfer->hand(xfer); 369 } 370 371 #define WATCHDOG_HZ 10 372 static void 373 firewire_watchdog(void *arg) 374 { 375 struct firewire_softc *sc = arg; 376 struct firewire_comm *fc = sc->fc; 377 378 /* 379 * At boot stage, the device interrupt is disabled and 380 * we encounter a timeout easily. To avoid this, 381 * ignore clock ticks for a while. 382 */ 383 if (sc->watchdog_clock > WATCHDOG_HZ * 15) 384 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout); 385 else 386 sc->watchdog_clock++; 387 388 callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ, 389 firewire_watchdog, sc); 390 } 391 392 /* 393 * The attach routine. 394 */ 395 static int 396 firewire_attach(device_t dev) 397 { 398 int unit; 399 struct firewire_softc *sc = device_get_softc(dev); 400 device_t pa = device_get_parent(dev); 401 struct firewire_comm *fc; 402 403 fc = device_get_softc(pa); 404 sc->fc = fc; 405 fc->status = FWBUSNOTREADY; 406 407 unit = device_get_unit(dev); 408 if (fc->nisodma > FWMAXNDMA) 409 fc->nisodma = FWMAXNDMA; 410 411 fwdev_makedev(sc); 412 413 fc->crom_src_buf = malloc(sizeof(struct crom_src_buf), 414 M_FW, M_NOWAIT | M_ZERO); 415 if (fc->crom_src_buf == NULL) { 416 device_printf(fc->dev, 417 "%s: unable to allocate crom src buffer\n", __func__); 418 return ENOMEM; 419 } 420 fc->topology_map = malloc(sizeof(struct fw_topology_map), 421 M_FW, M_NOWAIT | M_ZERO); 422 if (fc->topology_map == NULL) { 423 device_printf(fc->dev, "%s: unable to allocate topology map\n", 424 __func__); 425 free(fc->crom_src_buf, M_FW); 426 return ENOMEM; 427 } 428 fc->speed_map = malloc(sizeof(struct fw_speed_map), 429 M_FW, M_NOWAIT | M_ZERO); 430 if (fc->speed_map == NULL) { 431 device_printf(fc->dev, "%s: unable to allocate speed map\n", 432 __func__); 433 free(fc->crom_src_buf, M_FW); 434 free(fc->topology_map, M_FW); 435 return ENOMEM; 436 } 437 438 mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF); 439 mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF); 440 CALLOUT_INIT(&fc->timeout_callout); 441 CALLOUT_INIT(&fc->bmr_callout); 442 CALLOUT_INIT(&fc->busprobe_callout); 443 TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, fc); 444 445 sc->watchdog_clock = 0; 446 callout_reset(&sc->fc->timeout_callout, hz, 447 firewire_watchdog, sc); 448 449 /* create thread */ 450 kproc_create(fw_bus_probe_thread, fc, &fc->probe_thread, 451 0, 0, "fw%d_probe", unit); 452 453 /* Locate our children */ 454 bus_identify_children(dev); 455 456 /* launch attachement of the added children */ 457 bus_attach_children(dev); 458 459 /* bus_reset */ 460 FW_GLOCK(fc); 461 fw_busreset(fc, FWBUSNOTREADY); 462 FW_GUNLOCK(fc); 463 fc->ibr(fc); 464 465 return 0; 466 } 467 468 /* 469 * Attach it as child. 470 */ 471 static device_t 472 firewire_add_child(device_t dev, u_int order, const char *name, int unit) 473 { 474 device_t child; 475 struct firewire_softc *sc; 476 477 sc = device_get_softc(dev); 478 child = device_add_child(dev, name, unit); 479 if (child) { 480 device_set_ivars(child, sc->fc); 481 device_probe_and_attach(child); 482 } 483 484 return child; 485 } 486 487 static int 488 firewire_resume(device_t dev) 489 { 490 struct firewire_softc *sc; 491 492 sc = device_get_softc(dev); 493 sc->fc->status = FWBUSNOTREADY; 494 495 bus_generic_resume(dev); 496 497 return (0); 498 } 499 500 /* 501 * Detach it. 502 */ 503 static int 504 firewire_detach(device_t dev) 505 { 506 struct firewire_softc *sc; 507 struct firewire_comm *fc; 508 struct fw_device *fwdev, *fwdev_next; 509 int err; 510 511 sc = device_get_softc(dev); 512 fc = sc->fc; 513 mtx_lock(&fc->wait_lock); 514 fc->status = FWBUSDETACH; 515 wakeup(fc); 516 if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60)) 517 printf("firewire probe thread didn't die\n"); 518 mtx_unlock(&fc->wait_lock); 519 520 if (fc->arq != 0 && fc->arq->maxq > 0) 521 fw_drain_txq(fc); 522 523 if ((err = fwdev_destroydev(sc)) != 0) 524 return err; 525 526 if ((err = bus_generic_detach(dev)) != 0) 527 return err; 528 529 callout_stop(&fc->timeout_callout); 530 callout_stop(&fc->bmr_callout); 531 callout_stop(&fc->busprobe_callout); 532 533 /* TODO: cancel pending xfers in atq/ats queues */ 534 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; 535 fwdev = fwdev_next) { 536 fwdev_next = STAILQ_NEXT(fwdev, link); 537 free(fwdev, M_FW); 538 } 539 free(fc->topology_map, M_FW); 540 free(fc->speed_map, M_FW); 541 free(fc->crom_src_buf, M_FW); 542 543 mtx_destroy(&fc->tlabel_lock); 544 mtx_destroy(&fc->wait_lock); 545 return (0); 546 } 547 548 static void 549 fw_xferq_drain(struct fw_xferq *xferq) 550 { 551 struct fw_xfer *xfer; 552 553 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) { 554 STAILQ_REMOVE_HEAD(&xferq->q, link); 555 #if 0 556 xferq->queued--; 557 #endif 558 xfer->resp = EAGAIN; 559 xfer->flag = FWXF_SENTERR; 560 fw_xfer_done(xfer); 561 } 562 } 563 564 void 565 fw_drain_txq(struct firewire_comm *fc) 566 { 567 struct fw_xfer *xfer, *txfer; 568 STAILQ_HEAD(, fw_xfer) xfer_drain; 569 int i; 570 571 STAILQ_INIT(&xfer_drain); 572 573 FW_GLOCK(fc); 574 fw_xferq_drain(fc->atq); 575 fw_xferq_drain(fc->ats); 576 for (i = 0; i < fc->nisodma; i++) 577 fw_xferq_drain(fc->it[i]); 578 FW_GUNLOCK(fc); 579 580 mtx_lock(&fc->tlabel_lock); 581 for (i = 0; i < 0x40; i++) 582 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 583 if (firewire_debug) 584 printf("tl=%d flag=%d\n", i, xfer->flag); 585 xfer->tl = -1; 586 xfer->resp = EAGAIN; 587 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 588 STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel); 589 } 590 mtx_unlock(&fc->tlabel_lock); 591 592 STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer) 593 xfer->hand(xfer); 594 } 595 596 static void 597 fw_reset_csr(struct firewire_comm *fc) 598 { 599 int i; 600 601 CSRARC(fc, STATE_CLEAR) 602 = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 603 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 604 CSRARC(fc, NODE_IDS) = 0x3f; 605 606 CSRARC(fc, TOPO_MAP + 8) = 0; 607 fc->irm = -1; 608 609 fc->max_node = -1; 610 611 for (i = 2; i < 0x100 / 4 - 2; i++) { 612 CSRARC(fc, SPED_MAP + i * 4) = 0; 613 } 614 CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 615 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 616 CSRARC(fc, RESET_START) = 0; 617 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0; 618 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19; 619 CSRARC(fc, CYCLE_TIME) = 0x0; 620 CSRARC(fc, BUS_TIME) = 0x0; 621 CSRARC(fc, BUS_MGR_ID) = 0x3f; 622 CSRARC(fc, BANDWIDTH_AV) = 4915; 623 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; 624 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; 625 CSRARC(fc, IP_CHANNELS) = (1U << 31); 626 627 CSRARC(fc, CONF_ROM) = 0x04 << 24; 628 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */ 629 CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 | 630 1 << 28 | 0xff << 16 | 0x09 << 8; 631 CSRARC(fc, CONF_ROM + 0xc) = 0; 632 633 /* DV depend CSRs see blue book */ 634 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON; 635 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON; 636 637 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14); 638 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 639 } 640 641 static void 642 fw_init_crom(struct firewire_comm *fc) 643 { 644 struct crom_src *src; 645 646 src = &fc->crom_src_buf->src; 647 bzero(src, sizeof(struct crom_src)); 648 649 /* BUS info sample */ 650 src->hdr.info_len = 4; 651 652 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394; 653 654 src->businfo.irmc = 1; 655 src->businfo.cmc = 1; 656 src->businfo.isc = 1; 657 src->businfo.bmc = 1; 658 src->businfo.pmc = 0; 659 src->businfo.cyc_clk_acc = 100; 660 src->businfo.max_rec = fc->maxrec; 661 src->businfo.max_rom = MAXROM_4; 662 #define FW_GENERATION_CHANGEABLE 2 663 src->businfo.generation = FW_GENERATION_CHANGEABLE; 664 src->businfo.link_spd = fc->speed; 665 666 src->businfo.eui64.hi = fc->eui.hi; 667 src->businfo.eui64.lo = fc->eui.lo; 668 669 STAILQ_INIT(&src->chunk_list); 670 671 fc->crom_src = src; 672 fc->crom_root = &fc->crom_src_buf->root; 673 } 674 675 static void 676 fw_reset_crom(struct firewire_comm *fc) 677 { 678 struct crom_src_buf *buf; 679 struct crom_src *src; 680 struct crom_chunk *root; 681 682 buf = fc->crom_src_buf; 683 src = fc->crom_src; 684 root = fc->crom_root; 685 686 STAILQ_INIT(&src->chunk_list); 687 688 bzero(root, sizeof(struct crom_chunk)); 689 crom_add_chunk(src, NULL, root, 0); 690 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); 691 /* private company_id */ 692 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); 693 crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project"); 694 crom_add_entry(root, CSRKEY_HW, __FreeBSD_version); 695 mtx_lock(&prison0.pr_mtx); 696 crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname); 697 mtx_unlock(&prison0.pr_mtx); 698 } 699 700 /* 701 * Called after bus reset. 702 */ 703 void 704 fw_busreset(struct firewire_comm *fc, uint32_t new_status) 705 { 706 struct firewire_dev_comm *fdc; 707 struct crom_src *src; 708 device_t *devlistp; 709 uint32_t *newrom; 710 int i, devcnt; 711 712 FW_GLOCK_ASSERT(fc); 713 if (fc->status == FWBUSMGRELECT) 714 callout_stop(&fc->bmr_callout); 715 716 fc->status = new_status; 717 fw_reset_csr(fc); 718 719 if (fc->status == FWBUSNOTREADY) 720 fw_init_crom(fc); 721 722 fw_reset_crom(fc); 723 724 if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) { 725 for (i = 0; i < devcnt; i++) 726 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 727 fdc = device_get_softc(devlistp[i]); 728 if (fdc->post_busreset != NULL) 729 fdc->post_busreset(fdc); 730 } 731 free(devlistp, M_TEMP); 732 } 733 734 src = &fc->crom_src_buf->src; 735 /* 736 * If the old config rom needs to be overwritten, 737 * bump the businfo.generation indicator to 738 * indicate that we need to be reprobed 739 * See 1394a-2000 8.3.2.5.4 for more details. 740 * generation starts at 2 and rolls over at 0xF 741 * back to 2. 742 * 743 * A generation of 0 indicates a device 744 * that is not 1394a-2000 compliant. 745 * A generation of 1 indicates a device that 746 * does not change it's Bus Info Block or 747 * Configuration ROM. 748 */ 749 #define FW_MAX_GENERATION 0xF 750 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); 751 if (newrom == NULL) 752 goto out; 753 src = &fc->crom_src_buf->src; 754 crom_load(src, newrom, CROMSIZE); 755 if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) { 756 /* Bump generation and reload. */ 757 src->businfo.generation++; 758 759 /* Handle generation count wraps. */ 760 if (src->businfo.generation < FW_GENERATION_CHANGEABLE) 761 src->businfo.generation = FW_GENERATION_CHANGEABLE; 762 763 /* Recalculate CRC to account for generation change. */ 764 crom_load(src, newrom, CROMSIZE); 765 bcopy(newrom, fc->config_rom, CROMSIZE); 766 } 767 free(newrom, M_FW); 768 out:; 769 } 770 771 /* Call once after reboot */ 772 void fw_init(struct firewire_comm *fc) 773 { 774 int i; 775 #ifdef FW_VMACCESS 776 struct fw_xfer *xfer; 777 struct fw_bind *fwb; 778 #endif 779 780 fc->arq->queued = 0; 781 fc->ars->queued = 0; 782 fc->atq->queued = 0; 783 fc->ats->queued = 0; 784 785 fc->arq->buf = NULL; 786 fc->ars->buf = NULL; 787 fc->atq->buf = NULL; 788 fc->ats->buf = NULL; 789 790 fc->arq->flag = 0; 791 fc->ars->flag = 0; 792 fc->atq->flag = 0; 793 fc->ats->flag = 0; 794 795 STAILQ_INIT(&fc->atq->q); 796 STAILQ_INIT(&fc->ats->q); 797 798 for (i = 0; i < fc->nisodma; i++) { 799 fc->it[i]->queued = 0; 800 fc->ir[i]->queued = 0; 801 802 fc->it[i]->start = NULL; 803 fc->ir[i]->start = NULL; 804 805 fc->it[i]->buf = NULL; 806 fc->ir[i]->buf = NULL; 807 808 fc->it[i]->flag = FWXFERQ_STREAM; 809 fc->ir[i]->flag = FWXFERQ_STREAM; 810 811 STAILQ_INIT(&fc->it[i]->q); 812 STAILQ_INIT(&fc->ir[i]->q); 813 } 814 815 fc->arq->maxq = FWMAXQUEUE; 816 fc->ars->maxq = FWMAXQUEUE; 817 fc->atq->maxq = FWMAXQUEUE; 818 fc->ats->maxq = FWMAXQUEUE; 819 820 for (i = 0; i < fc->nisodma; i++) { 821 fc->ir[i]->maxq = FWMAXQUEUE; 822 fc->it[i]->maxq = FWMAXQUEUE; 823 } 824 825 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16; 826 CSRARC(fc, TOPO_MAP + 4) = 1; 827 CSRARC(fc, SPED_MAP) = 0x3f1 << 16; 828 CSRARC(fc, SPED_MAP + 4) = 1; 829 830 STAILQ_INIT(&fc->devices); 831 832 /* Initialize Async handlers */ 833 STAILQ_INIT(&fc->binds); 834 for (i = 0; i < 0x40; i++) { 835 STAILQ_INIT(&fc->tlabels[i]); 836 } 837 838 /* DV depend CSRs see blue book */ 839 #if 0 840 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */ 841 CSRARC(fc, oPCR) = 0x8000007a; 842 for (i = 4; i < 0x7c/4; i += 4) { 843 CSRARC(fc, i + oPCR) = 0x8000007a; 844 } 845 846 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */ 847 CSRARC(fc, iPCR) = 0x803f0000; 848 for (i = 4; i < 0x7c/4; i += 4) { 849 CSRARC(fc, i + iPCR) = 0x0; 850 } 851 #endif 852 853 fc->crom_src_buf = NULL; 854 855 #ifdef FW_VMACCESS 856 xfer = fw_xfer_alloc(); 857 if (xfer == NULL) 858 return; 859 860 fwb = malloc(sizeof(struct fw_bind), M_FW, M_NOWAIT); 861 if (fwb == NULL) { 862 fw_xfer_free(xfer); 863 return; 864 } 865 xfer->hand = fw_vmaccess; 866 xfer->fc = fc; 867 xfer->sc = NULL; 868 869 fwb->start_hi = 0x2; 870 fwb->start_lo = 0; 871 fwb->addrlen = 0xffffffff; 872 fwb->xfer = xfer; 873 fw_bindadd(fc, fwb); 874 #endif 875 } 876 877 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)? -1 : \ 878 ((fwb)->end < (addr)) ? 1 : 0) 879 880 /* 881 * To lookup bound process from IEEE1394 address. 882 */ 883 struct fw_bind * 884 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo) 885 { 886 u_int64_t addr; 887 struct fw_bind *tfw, *r = NULL; 888 889 addr = ((u_int64_t)dest_hi << 32) | dest_lo; 890 FW_GLOCK(fc); 891 STAILQ_FOREACH(tfw, &fc->binds, fclist) 892 if (BIND_CMP(addr, tfw) == 0) { 893 r = tfw; 894 break; 895 } 896 FW_GUNLOCK(fc); 897 return (r); 898 } 899 900 /* 901 * To bind IEEE1394 address block to process. 902 */ 903 int 904 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb) 905 { 906 struct fw_bind *tfw, *prev = NULL; 907 int r = 0; 908 909 if (fwb->start > fwb->end) { 910 printf("%s: invalid range\n", __func__); 911 return EINVAL; 912 } 913 914 FW_GLOCK(fc); 915 STAILQ_FOREACH(tfw, &fc->binds, fclist) { 916 if (fwb->end < tfw->start) 917 break; 918 prev = tfw; 919 } 920 if (prev == NULL) 921 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist); 922 else if (prev->end < fwb->start) 923 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist); 924 else { 925 printf("%s: bind failed\n", __func__); 926 r = EBUSY; 927 } 928 FW_GUNLOCK(fc); 929 return (r); 930 } 931 932 /* 933 * To free IEEE1394 address block. 934 */ 935 int 936 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb) 937 { 938 #if 0 939 struct fw_xfer *xfer, *next; 940 #endif 941 struct fw_bind *tfw; 942 int s; 943 944 s = splfw(); 945 FW_GLOCK(fc); 946 STAILQ_FOREACH(tfw, &fc->binds, fclist) 947 if (tfw == fwb) { 948 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist); 949 goto found; 950 } 951 952 printf("%s: no such binding\n", __func__); 953 FW_GUNLOCK(fc); 954 splx(s); 955 return (1); 956 found: 957 #if 0 958 /* shall we do this? */ 959 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) { 960 next = STAILQ_NEXT(xfer, link); 961 fw_xfer_free(xfer); 962 } 963 STAILQ_INIT(&fwb->xferlist); 964 #endif 965 FW_GUNLOCK(fc); 966 967 splx(s); 968 return 0; 969 } 970 971 int 972 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type, 973 int slen, int rlen, int n, 974 struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *)) 975 { 976 int i, s; 977 struct fw_xfer *xfer; 978 979 for (i = 0; i < n; i++) { 980 xfer = fw_xfer_alloc_buf(type, slen, rlen); 981 if (xfer == NULL) 982 return (i); 983 xfer->fc = fc; 984 xfer->sc = sc; 985 xfer->hand = hand; 986 s = splfw(); 987 STAILQ_INSERT_TAIL(q, xfer, link); 988 splx(s); 989 } 990 return (n); 991 } 992 993 void 994 fw_xferlist_remove(struct fw_xferlist *q) 995 { 996 struct fw_xfer *xfer, *next; 997 998 for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) { 999 next = STAILQ_NEXT(xfer, link); 1000 fw_xfer_free_buf(xfer); 1001 } 1002 STAILQ_INIT(q); 1003 } 1004 /* 1005 * dump packet header 1006 */ 1007 static void 1008 fw_dump_hdr(struct fw_pkt *fp, char *prefix) 1009 { 1010 printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x " 1011 "src=0x%03x\n", prefix, 1012 fp->mode.hdr.dst & 0x3f, 1013 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3, 1014 fp->mode.hdr.tcode, fp->mode.hdr.pri, 1015 fp->mode.hdr.src); 1016 } 1017 1018 /* 1019 * To free transaction label. 1020 */ 1021 static void 1022 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer) 1023 { 1024 struct fw_xfer *txfer; 1025 1026 mtx_lock(&fc->tlabel_lock); 1027 if (xfer->tl < 0) { 1028 mtx_unlock(&fc->tlabel_lock); 1029 return; 1030 } 1031 /* make sure the label is allocated */ 1032 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) 1033 if (txfer == xfer) 1034 break; 1035 if (txfer == NULL) { 1036 printf("%s: the xfer is not in the queue " 1037 "(tlabel=%d, flag=0x%x)\n", 1038 __FUNCTION__, xfer->tl, xfer->flag); 1039 fw_dump_hdr(&xfer->send.hdr, "send"); 1040 fw_dump_hdr(&xfer->recv.hdr, "recv"); 1041 kdb_backtrace(); 1042 mtx_unlock(&fc->tlabel_lock); 1043 return; 1044 } 1045 1046 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); 1047 xfer->tl = -1; 1048 mtx_unlock(&fc->tlabel_lock); 1049 return; 1050 } 1051 1052 /* 1053 * Look up an XFER by transaction label. 1054 * Removes the xfer from fc->tlabels only when AT transmit has completed 1055 * (FWXF_SENT); FWXF_START xfers remain so fw_drain_txq() can find them 1056 * on a bus reset. 1057 */ 1058 static struct fw_xfer * 1059 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode) 1060 { 1061 struct fw_xfer *xfer; 1062 int req; 1063 1064 mtx_lock(&fc->tlabel_lock); 1065 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) { 1066 if (xfer->send.hdr.mode.hdr.dst != node) 1067 continue; 1068 /* Validate tcode match before claiming the xfer. */ 1069 req = xfer->send.hdr.mode.hdr.tcode; 1070 if (xfer->fc->tcode[req].valid_res != tcode) { 1071 printf("%s: invalid response tcode " 1072 "(0x%x for 0x%x)\n", __func__, tcode, req); 1073 mtx_unlock(&fc->tlabel_lock); 1074 return (NULL); 1075 } 1076 /* 1077 * Remove from tlabels only after AT transmit completes 1078 * (FWXF_SENT). Early responses (FWXF_START) must stay 1079 * in the list until fwohci_txd() drains the descriptor. 1080 */ 1081 if (xfer->flag & FWXF_SENT) { 1082 STAILQ_REMOVE(&fc->tlabels[tlabel], xfer, 1083 fw_xfer, tlabel); 1084 xfer->tl = -1; 1085 } 1086 mtx_unlock(&fc->tlabel_lock); 1087 if (firewire_debug > 2) 1088 printf("fw_tl2xfer: found tl=%d\n", tlabel); 1089 return (xfer); 1090 } 1091 mtx_unlock(&fc->tlabel_lock); 1092 if (firewire_debug > 1) 1093 printf("fw_tl2xfer: not found tl=%d\n", tlabel); 1094 return (NULL); 1095 } 1096 1097 /* 1098 * To allocate IEEE1394 XFER structure. 1099 */ 1100 struct fw_xfer * 1101 fw_xfer_alloc(struct malloc_type *type) 1102 { 1103 struct fw_xfer *xfer; 1104 1105 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO); 1106 if (xfer == NULL) 1107 return xfer; 1108 1109 xfer->malloc = type; 1110 xfer->tl = -1; 1111 1112 return xfer; 1113 } 1114 1115 struct fw_xfer * 1116 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len) 1117 { 1118 struct fw_xfer *xfer; 1119 1120 xfer = fw_xfer_alloc(type); 1121 if (xfer == NULL) 1122 return (NULL); 1123 xfer->send.pay_len = send_len; 1124 xfer->recv.pay_len = recv_len; 1125 if (send_len > 0) { 1126 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO); 1127 if (xfer->send.payload == NULL) { 1128 fw_xfer_free(xfer); 1129 return (NULL); 1130 } 1131 } 1132 if (recv_len > 0) { 1133 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT); 1134 if (xfer->recv.payload == NULL) { 1135 if (xfer->send.payload != NULL) 1136 free(xfer->send.payload, type); 1137 fw_xfer_free(xfer); 1138 return (NULL); 1139 } 1140 } 1141 return (xfer); 1142 } 1143 1144 /* 1145 * IEEE1394 XFER post process. 1146 */ 1147 void 1148 fw_xfer_done(struct fw_xfer *xfer) 1149 { 1150 if (xfer->hand == NULL) { 1151 printf("hand == NULL\n"); 1152 return; 1153 } 1154 1155 if (xfer->fc == NULL) 1156 panic("fw_xfer_done: why xfer->fc is NULL?"); 1157 1158 fw_tl_free(xfer->fc, xfer); 1159 xfer->hand(xfer); 1160 } 1161 1162 void 1163 fw_xfer_unload(struct fw_xfer *xfer) 1164 { 1165 1166 if (xfer == NULL) 1167 return; 1168 1169 if (xfer->fc != NULL) { 1170 FW_GLOCK(xfer->fc); 1171 if (xfer->flag & FWXF_INQ) { 1172 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); 1173 xfer->flag &= ~FWXF_INQ; 1174 #if 0 1175 xfer->q->queued--; 1176 #endif 1177 } 1178 FW_GUNLOCK(xfer->fc); 1179 1180 /* 1181 * Ensure that any tlabel owner can't access this 1182 * xfer after it's freed. 1183 */ 1184 fw_tl_free(xfer->fc, xfer); 1185 #if 1 1186 if (xfer->flag & FWXF_START) 1187 /* 1188 * This could happen if: 1189 * 1. We call fwohci_arcv() before fwohci_txd(). 1190 * 2. firewire_watch() is called. 1191 */ 1192 printf("fw_xfer_free FWXF_START\n"); 1193 #endif 1194 } 1195 xfer->flag = FWXF_INIT; 1196 xfer->resp = 0; 1197 } 1198 1199 /* 1200 * To free IEEE1394 XFER structure. 1201 */ 1202 void 1203 fw_xfer_free_buf(struct fw_xfer *xfer) 1204 { 1205 if (xfer == NULL) { 1206 printf("%s: xfer == NULL\n", __func__); 1207 return; 1208 } 1209 fw_xfer_unload(xfer); 1210 if (xfer->send.payload != NULL) 1211 free(xfer->send.payload, xfer->malloc); 1212 if (xfer->recv.payload != NULL) 1213 free(xfer->recv.payload, xfer->malloc); 1214 free(xfer, xfer->malloc); 1215 } 1216 1217 void 1218 fw_xfer_free(struct fw_xfer *xfer) 1219 { 1220 if (xfer == NULL) { 1221 printf("%s: xfer == NULL\n", __func__); 1222 return; 1223 } 1224 fw_xfer_unload(xfer); 1225 free(xfer, xfer->malloc); 1226 } 1227 1228 void 1229 fw_asy_callback_free(struct fw_xfer *xfer) 1230 { 1231 #if 0 1232 printf("asyreq done flag=0x%02x resp=%d\n", 1233 xfer->flag, xfer->resp); 1234 #endif 1235 fw_xfer_free(xfer); 1236 } 1237 1238 /* 1239 * To configure PHY. 1240 */ 1241 static void 1242 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count) 1243 { 1244 struct fw_xfer *xfer; 1245 struct fw_pkt *fp; 1246 1247 fc->status = FWBUSPHYCONF; 1248 1249 xfer = fw_xfer_alloc(M_FWXFER); 1250 if (xfer == NULL) 1251 return; 1252 xfer->fc = fc; 1253 xfer->hand = fw_asy_callback_free; 1254 1255 fp = &xfer->send.hdr; 1256 fp->mode.ld[1] = 0; 1257 if (root_node >= 0) 1258 fp->mode.ld[1] |= (1 << 23) | (root_node & 0x3f) << 24; 1259 if (gap_count >= 0) 1260 fp->mode.ld[1] |= (1 << 22) | (gap_count & 0x3f) << 16; 1261 fp->mode.ld[2] = ~fp->mode.ld[1]; 1262 fp->mode.common.tcode |= FWTCODE_PHY; 1263 1264 if (firewire_debug) 1265 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n", 1266 __func__, root_node, gap_count); 1267 fw_asyreq(fc, -1, xfer); 1268 } 1269 1270 /* 1271 * Dump self ID. 1272 */ 1273 static void 1274 fw_print_sid(uint32_t sid) 1275 { 1276 union fw_self_id *s; 1277 s = (union fw_self_id *) &sid; 1278 if (s->p0.sequel) { 1279 if (s->p1.sequence_num == FW_SELF_ID_PAGE0) { 1280 printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d" 1281 "p8:%d p9:%d p10:%d\n", 1282 s->p1.phy_id, s->p1.port3, s->p1.port4, 1283 s->p1.port5, s->p1.port6, s->p1.port7, 1284 s->p1.port8, s->p1.port9, s->p1.port10); 1285 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) { 1286 printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n", 1287 s->p2.phy_id, s->p2.port11, s->p2.port12, 1288 s->p2.port13, s->p2.port14, s->p2.port15); 1289 } else { 1290 printf("node:%d Unknown Self ID Page number %d\n", 1291 s->p1.phy_id, s->p1.sequence_num); 1292 } 1293 } else { 1294 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d" 1295 " p0:%d p1:%d p2:%d i:%d m:%d\n", 1296 s->p0.phy_id, s->p0.link_active, s->p0.gap_count, 1297 s->p0.phy_speed, s->p0.contender, 1298 s->p0.power_class, s->p0.port0, s->p0.port1, 1299 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets); 1300 } 1301 } 1302 1303 /* 1304 * To receive self ID. 1305 */ 1306 void fw_sidrcv(struct firewire_comm *fc, uint32_t *sid, u_int len) 1307 { 1308 uint32_t *p; 1309 union fw_self_id *self_id; 1310 u_int i, j, node, c_port = 0, i_branch = 0; 1311 1312 fc->sid_cnt = len / (sizeof(uint32_t) * 2); 1313 fc->max_node = fc->nodeid & 0x3f; 1314 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16; 1315 fc->status = FWBUSCYMELECT; 1316 fc->topology_map->crc_len = 2; 1317 fc->topology_map->generation++; 1318 fc->topology_map->self_id_count = 0; 1319 fc->topology_map->node_count= 0; 1320 fc->speed_map->generation++; 1321 fc->speed_map->crc_len = 1 + (64 * 64 + 3) / 4; 1322 self_id = &fc->topology_map->self_id[0]; 1323 for (i = 0; i < fc->sid_cnt; i++) { 1324 if (sid[1] != ~sid[0]) { 1325 device_printf(fc->bdev, 1326 "%s: ERROR invalid self-id packet\n", __func__); 1327 sid += 2; 1328 continue; 1329 } 1330 *self_id = *((union fw_self_id *)sid); 1331 fc->topology_map->crc_len++; 1332 if (self_id->p0.sequel == 0) { 1333 fc->topology_map->node_count++; 1334 c_port = 0; 1335 if (firewire_debug) 1336 fw_print_sid(sid[0]); 1337 node = self_id->p0.phy_id; 1338 if (fc->max_node < node) 1339 fc->max_node = self_id->p0.phy_id; 1340 fc->speed_map->speed[node][node] = 1341 self_id->p0.phy_speed; 1342 for (j = 0; j < node; j++) { 1343 fc->speed_map->speed[j][node] = 1344 fc->speed_map->speed[node][j] = 1345 min(fc->speed_map->speed[j][j], 1346 self_id->p0.phy_speed); 1347 } 1348 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) && 1349 (self_id->p0.link_active && self_id->p0.contender)) 1350 fc->irm = self_id->p0.phy_id; 1351 if (self_id->p0.port0 >= 0x2) 1352 c_port++; 1353 if (self_id->p0.port1 >= 0x2) 1354 c_port++; 1355 if (self_id->p0.port2 >= 0x2) 1356 c_port++; 1357 } 1358 if (c_port > 2) 1359 i_branch += (c_port - 2); 1360 sid += 2; 1361 self_id++; 1362 fc->topology_map->self_id_count++; 1363 } 1364 /* CRC */ 1365 fc->topology_map->crc = fw_crc16( 1366 (uint32_t *)&fc->topology_map->generation, 1367 fc->topology_map->crc_len * 4); 1368 fc->speed_map->crc = fw_crc16( 1369 (uint32_t *)&fc->speed_map->generation, 1370 fc->speed_map->crc_len * 4); 1371 /* byteswap and copy to CSR */ 1372 p = (uint32_t *)fc->topology_map; 1373 for (i = 0; i <= fc->topology_map->crc_len; i++) 1374 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++); 1375 p = (uint32_t *)fc->speed_map; 1376 CSRARC(fc, SPED_MAP) = htonl(*p++); 1377 CSRARC(fc, SPED_MAP + 4) = htonl(*p++); 1378 /* don't byte-swap uint8_t array */ 1379 bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1) * 4); 1380 1381 fc->max_hop = fc->max_node - i_branch; 1382 device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n", 1383 fc->max_node + 1, fc->max_hop, 1384 (fc->irm == -1) ? "Not IRM capable" : "cable IRM", 1385 fc->irm, (fc->irm == fc->nodeid) ? " (me) " : ""); 1386 1387 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) { 1388 if (fc->irm == fc->nodeid) { 1389 fc->status = FWBUSMGRDONE; 1390 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm); 1391 fw_bmr(fc); 1392 } else { 1393 fc->status = FWBUSMGRELECT; 1394 callout_reset(&fc->bmr_callout, hz / 8, 1395 fw_try_bmr, fc); 1396 } 1397 } else 1398 fc->status = FWBUSMGRDONE; 1399 1400 callout_reset(&fc->busprobe_callout, hz / 4, fw_bus_probe, fc); 1401 } 1402 1403 /* 1404 * To probe devices on the IEEE1394 bus. 1405 */ 1406 static void 1407 fw_bus_probe(void *arg) 1408 { 1409 struct firewire_comm *fc; 1410 struct fw_device *fwdev; 1411 int s; 1412 1413 s = splfw(); 1414 fc = arg; 1415 fc->status = FWBUSEXPLORE; 1416 1417 /* Invalidate all devices, just after bus reset. */ 1418 if (firewire_debug) 1419 device_printf(fc->bdev, "%s:" 1420 "iterate and invalidate all nodes\n", 1421 __func__); 1422 STAILQ_FOREACH(fwdev, &fc->devices, link) 1423 if (fwdev->status != FWDEVINVAL) { 1424 fwdev->status = FWDEVINVAL; 1425 fwdev->rcnt = 0; 1426 if (firewire_debug) 1427 device_printf(fc->bdev, "%s:" 1428 "Invalidate Dev ID: %08x%08x\n", 1429 __func__, fwdev->eui.hi, fwdev->eui.lo); 1430 } else { 1431 if (firewire_debug) 1432 device_printf(fc->bdev, "%s:" 1433 "Dev ID: %08x%08x already invalid\n", 1434 __func__, fwdev->eui.hi, fwdev->eui.lo); 1435 } 1436 splx(s); 1437 1438 wakeup(fc); 1439 } 1440 1441 static int 1442 fw_explore_read_quads(struct fw_device *fwdev, int offset, 1443 uint32_t *quad, int length) 1444 { 1445 struct fw_xfer *xfer; 1446 uint32_t tmp; 1447 int i, error; 1448 1449 for (i = 0; i < length; i++, offset += sizeof(uint32_t)) { 1450 xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff, 1451 0xf0000000 | offset, &tmp, fw_xferwake); 1452 if (xfer == NULL) 1453 return (-1); 1454 fw_xferwait(xfer); 1455 1456 if (xfer->resp == 0) 1457 quad[i] = ntohl(tmp); 1458 1459 error = xfer->resp; 1460 fw_xfer_free(xfer); 1461 if (error) 1462 return (error); 1463 } 1464 return (0); 1465 } 1466 1467 1468 static int 1469 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur) 1470 { 1471 int err, i, off; 1472 struct csrdirectory *dir; 1473 struct csrreg *reg; 1474 1475 dir = (struct csrdirectory *)&fwdev->csrrom[offset / sizeof(uint32_t)]; 1476 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1477 (uint32_t *)dir, 1); 1478 if (err) 1479 return (-1); 1480 1481 offset += sizeof(uint32_t); 1482 reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)]; 1483 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1484 (uint32_t *)reg, dir->crc_len); 1485 if (err) 1486 return (-1); 1487 1488 /* TODO: validate directory CRC */ 1489 1490 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1); 1491 if (fwdev->rommax < off) 1492 fwdev->rommax = off; 1493 1494 if (recur == 0) 1495 return (0); 1496 1497 for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) { 1498 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D) 1499 recur = 1; 1500 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L) 1501 recur = 0; 1502 else 1503 continue; 1504 1505 off = offset + reg[i].val * sizeof(uint32_t); 1506 if (off > CROMSIZE) { 1507 printf("%s: invalid offset %d\n", __FUNCTION__, off); 1508 return (-1); 1509 } 1510 err = fw_explore_csrblock(fwdev, off, recur); 1511 if (err) 1512 return (-1); 1513 } 1514 return (0); 1515 } 1516 1517 static int 1518 fw_explore_node(struct fw_device *dfwdev) 1519 { 1520 struct firewire_comm *fc; 1521 struct fw_device *fwdev, *pfwdev, *tfwdev; 1522 uint32_t *csr; 1523 struct csrhdr *hdr; 1524 struct bus_info *binfo; 1525 int err, node; 1526 uint32_t speed_test = 0; 1527 1528 fc = dfwdev->fc; 1529 csr = dfwdev->csrrom; 1530 node = dfwdev->dst; 1531 1532 /* First quad */ 1533 err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1); 1534 if (err) { 1535 dfwdev->status = FWDEVINVAL; 1536 return (-1); 1537 } 1538 hdr = (struct csrhdr *)&csr[0]; 1539 if (hdr->info_len != 4) { 1540 if (firewire_debug) 1541 device_printf(fc->bdev, 1542 "%s: node%d: wrong bus info len(%d)\n", 1543 __func__, node, hdr->info_len); 1544 dfwdev->status = FWDEVINVAL; 1545 return (-1); 1546 } 1547 1548 /* bus info */ 1549 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); 1550 if (err) { 1551 dfwdev->status = FWDEVINVAL; 1552 return (-1); 1553 } 1554 binfo = (struct bus_info *)&csr[1]; 1555 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { 1556 dfwdev->status = FWDEVINVAL; 1557 return (-1); 1558 } 1559 1560 if (firewire_debug) 1561 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n" 1562 "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) " 1563 "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) " 1564 "generation(%d) link_spd(%d)\n", 1565 __func__, node, 1566 binfo->irmc, binfo->cmc, binfo->isc, 1567 binfo->bmc, binfo->pmc, binfo->cyc_clk_acc, 1568 binfo->max_rec, binfo->max_rom, 1569 binfo->generation, binfo->link_spd); 1570 1571 STAILQ_FOREACH(fwdev, &fc->devices, link) 1572 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) 1573 break; 1574 if (fwdev == NULL) { 1575 /* new device */ 1576 fwdev = malloc(sizeof(struct fw_device), M_FW, 1577 M_NOWAIT | M_ZERO); 1578 if (fwdev == NULL) { 1579 device_printf(fc->bdev, "%s: node%d: no memory\n", 1580 __func__, node); 1581 return (-1); 1582 } 1583 fwdev->fc = fc; 1584 fwdev->eui = binfo->eui64; 1585 fwdev->dst = dfwdev->dst; 1586 fwdev->maxrec = dfwdev->maxrec; 1587 fwdev->status = dfwdev->status; 1588 1589 /* 1590 * Pre-1394a-2000 didn't have link_spd in 1591 * the Bus Info block, so try and use the 1592 * speed map value. 1593 * 1394a-2000 compliant devices only use 1594 * the Bus Info Block link spd value, so 1595 * ignore the speed map altogether. SWB 1596 */ 1597 if (binfo->link_spd == FWSPD_S100 /* 0 */) { 1598 device_printf(fc->bdev, "%s: " 1599 "Pre 1394a-2000 detected\n", __func__); 1600 fwdev->speed = fc->speed_map->speed[fc->nodeid][node]; 1601 } else 1602 fwdev->speed = binfo->link_spd; 1603 /* 1604 * Test this speed with a read to the CSRROM. 1605 * If it fails, slow down the speed and retry. 1606 */ 1607 while (fwdev->speed > FWSPD_S100 /* 0 */) { 1608 err = fw_explore_read_quads(fwdev, CSRROMOFF, 1609 &speed_test, 1); 1610 if (err) { 1611 device_printf(fc->bdev, 1612 "%s: fwdev->speed(%s) decremented due to negotiation\n", 1613 __func__, linkspeed[fwdev->speed]); 1614 fwdev->speed--; 1615 } else 1616 break; 1617 1618 } 1619 1620 /* 1621 * If the fwdev is not found in the 1622 * fc->devices TAILQ, then we will add it. 1623 */ 1624 pfwdev = NULL; 1625 STAILQ_FOREACH(tfwdev, &fc->devices, link) { 1626 if (tfwdev->eui.hi > fwdev->eui.hi || 1627 (tfwdev->eui.hi == fwdev->eui.hi && 1628 tfwdev->eui.lo > fwdev->eui.lo)) 1629 break; 1630 pfwdev = tfwdev; 1631 } 1632 if (pfwdev == NULL) 1633 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link); 1634 else 1635 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link); 1636 } else { 1637 fwdev->dst = node; 1638 fwdev->status = FWDEVINIT; 1639 /* unchanged ? */ 1640 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) { 1641 if (firewire_debug) 1642 device_printf(fc->dev, 1643 "node%d: crom unchanged\n", node); 1644 return (0); 1645 } 1646 } 1647 1648 bzero(&fwdev->csrrom[0], CROMSIZE); 1649 1650 /* copy first quad and bus info block */ 1651 bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5); 1652 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; 1653 1654 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ 1655 1656 if (err) { 1657 if (firewire_debug) 1658 device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n", 1659 __func__, err); 1660 fwdev->status = FWDEVINVAL; 1661 fwdev->csrrom[0] = 0; 1662 } 1663 return (err); 1664 1665 } 1666 1667 /* 1668 * Find the self_id packet for a node, ignoring sequels. 1669 */ 1670 static union fw_self_id * 1671 fw_find_self_id(struct firewire_comm *fc, int node) 1672 { 1673 uint32_t i; 1674 union fw_self_id *s; 1675 1676 for (i = 0; i < fc->topology_map->self_id_count; i++) { 1677 s = &fc->topology_map->self_id[i]; 1678 if (s->p0.sequel) 1679 continue; 1680 if (s->p0.phy_id == node) 1681 return s; 1682 } 1683 return 0; 1684 } 1685 1686 static void 1687 fw_explore(struct firewire_comm *fc) 1688 { 1689 int node, err, s, i, todo, todo2, trys; 1690 char nodes[63]; 1691 struct fw_device dfwdev; 1692 union fw_self_id *fwsid; 1693 1694 todo = 0; 1695 /* setup dummy fwdev */ 1696 dfwdev.fc = fc; 1697 dfwdev.speed = 0; 1698 dfwdev.maxrec = 8; /* 512 */ 1699 dfwdev.status = FWDEVINIT; 1700 1701 for (node = 0; node <= fc->max_node; node++) { 1702 /* We don't probe myself and linkdown nodes */ 1703 if (node == fc->nodeid) { 1704 if (firewire_debug) 1705 device_printf(fc->bdev, "%s:" 1706 "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n", 1707 __func__, node, fc->nodeid, fc->max_node); 1708 continue; 1709 } else if (firewire_debug) { 1710 device_printf(fc->bdev, "%s:" 1711 "node(%d) fc->max_node(%d) found\n", 1712 __func__, node, fc->max_node); 1713 } 1714 fwsid = fw_find_self_id(fc, node); 1715 if (!fwsid || !fwsid->p0.link_active) { 1716 if (firewire_debug) 1717 device_printf(fc->bdev, 1718 "%s: node%d: link down\n", 1719 __func__, node); 1720 continue; 1721 } 1722 nodes[todo++] = node; 1723 } 1724 1725 s = splfw(); 1726 for (trys = 0; todo > 0 && trys < 3; trys++) { 1727 todo2 = 0; 1728 for (i = 0; i < todo; i++) { 1729 dfwdev.dst = nodes[i]; 1730 err = fw_explore_node(&dfwdev); 1731 if (err) 1732 nodes[todo2++] = nodes[i]; 1733 if (firewire_debug) 1734 device_printf(fc->bdev, 1735 "%s: node %d, err = %d\n", 1736 __func__, node, err); 1737 } 1738 todo = todo2; 1739 } 1740 splx(s); 1741 } 1742 1743 static void 1744 fw_bus_probe_thread(void *arg) 1745 { 1746 struct firewire_comm *fc; 1747 1748 fc = arg; 1749 1750 mtx_lock(&fc->wait_lock); 1751 while (fc->status != FWBUSDETACH) { 1752 if (fc->status == FWBUSEXPLORE) { 1753 mtx_unlock(&fc->wait_lock); 1754 fw_explore(fc); 1755 fc->status = FWBUSEXPDONE; 1756 if (firewire_debug) 1757 printf("bus_explore done\n"); 1758 fw_attach_dev(fc); 1759 mtx_lock(&fc->wait_lock); 1760 } 1761 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0); 1762 } 1763 mtx_unlock(&fc->wait_lock); 1764 kproc_exit(0); 1765 } 1766 1767 /* 1768 * To attach sub-devices layer onto IEEE1394 bus. 1769 */ 1770 static void 1771 fw_attach_dev(struct firewire_comm *fc) 1772 { 1773 struct fw_device *fwdev, *next; 1774 int i, err; 1775 device_t *devlistp; 1776 int devcnt; 1777 struct firewire_dev_comm *fdc; 1778 1779 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { 1780 next = STAILQ_NEXT(fwdev, link); 1781 if (fwdev->status == FWDEVINIT) { 1782 fwdev->status = FWDEVATTACHED; 1783 } else if (fwdev->status == FWDEVINVAL) { 1784 fwdev->rcnt++; 1785 if (firewire_debug) 1786 device_printf(fc->bdev, "%s:" 1787 "fwdev->rcnt(%d), hold_count(%d)\n", 1788 __func__, fwdev->rcnt, hold_count); 1789 if (fwdev->rcnt > hold_count) { 1790 /* 1791 * Remove devices which have not been seen 1792 * for a while. 1793 */ 1794 STAILQ_REMOVE(&fc->devices, fwdev, fw_device, 1795 link); 1796 free(fwdev, M_FW); 1797 } 1798 } 1799 } 1800 1801 err = device_get_children(fc->bdev, &devlistp, &devcnt); 1802 if (err == 0) { 1803 for (i = 0; i < devcnt; i++) { 1804 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 1805 fdc = device_get_softc(devlistp[i]); 1806 if (fdc->post_explore != NULL) 1807 fdc->post_explore(fdc); 1808 } 1809 } 1810 free(devlistp, M_TEMP); 1811 } 1812 1813 return; 1814 } 1815 1816 /* 1817 * To allocate unique transaction label. 1818 */ 1819 static int 1820 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer) 1821 { 1822 u_int dst, new_tlabel; 1823 struct fw_xfer *txfer; 1824 int s; 1825 1826 dst = xfer->send.hdr.mode.hdr.dst & 0x3f; 1827 s = splfw(); 1828 mtx_lock(&fc->tlabel_lock); 1829 new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f; 1830 STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel) 1831 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst) 1832 break; 1833 if (txfer == NULL) { 1834 fc->last_tlabel[dst] = new_tlabel; 1835 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel); 1836 mtx_unlock(&fc->tlabel_lock); 1837 splx(s); 1838 xfer->tl = new_tlabel; 1839 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2; 1840 if (firewire_debug > 1) 1841 printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel); 1842 return (new_tlabel); 1843 } 1844 mtx_unlock(&fc->tlabel_lock); 1845 splx(s); 1846 1847 if (firewire_debug > 1) 1848 printf("fw_get_tlabel: no free tlabel\n"); 1849 return (-1); 1850 } 1851 1852 static void 1853 fw_rcv_copy(struct fw_rcv_buf *rb) 1854 { 1855 struct fw_pkt *pkt; 1856 u_char *p; 1857 struct tcode_info *tinfo; 1858 u_int res, i, len, plen; 1859 1860 rb->xfer->recv.spd = rb->spd; 1861 1862 pkt = (struct fw_pkt *)rb->vec->iov_base; 1863 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode]; 1864 1865 /* Copy header */ 1866 p = (u_char *)&rb->xfer->recv.hdr; 1867 bcopy(rb->vec->iov_base, p, tinfo->hdr_len); 1868 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len; 1869 rb->vec->iov_len -= tinfo->hdr_len; 1870 1871 /* Copy payload */ 1872 p = (u_char *)rb->xfer->recv.payload; 1873 res = rb->xfer->recv.pay_len; 1874 1875 /* special handling for RRESQ */ 1876 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ && 1877 p != NULL && res >= sizeof(uint32_t)) { 1878 *(uint32_t *)p = pkt->mode.rresq.data; 1879 rb->xfer->recv.pay_len = sizeof(uint32_t); 1880 return; 1881 } 1882 1883 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0) 1884 return; 1885 1886 plen = pkt->mode.rresb.len; 1887 1888 for (i = 0; i < rb->nvec; i++, rb->vec++) { 1889 len = MIN(rb->vec->iov_len, plen); 1890 if (res < len) { 1891 device_printf(rb->fc->bdev, "%s:" 1892 " rcv buffer(%d) is %d bytes short.\n", 1893 __func__, rb->xfer->recv.pay_len, len - res); 1894 len = res; 1895 } 1896 bcopy(rb->vec->iov_base, p, len); 1897 p += len; 1898 res -= len; 1899 plen -= len; 1900 if (res == 0 || plen == 0) 1901 break; 1902 } 1903 rb->xfer->recv.pay_len -= res; 1904 } 1905 1906 /* 1907 * Generic packet receiving process. 1908 */ 1909 void 1910 fw_rcv(struct fw_rcv_buf *rb) 1911 { 1912 struct fw_pkt *fp, *resfp; 1913 struct fw_bind *bind; 1914 int tcode; 1915 int oldstate; 1916 #if 0 1917 int i, len; 1918 { 1919 uint32_t *qld; 1920 int i; 1921 qld = (uint32_t *)buf; 1922 printf("spd %d len:%d\n", spd, len); 1923 for (i = 0; i <= len && i < 32; i+= 4) { 1924 printf("0x%08x ", ntohl(qld[i/4])); 1925 if ((i % 16) == 15) printf("\n"); 1926 } 1927 if ((i % 16) != 15) printf("\n"); 1928 } 1929 #endif 1930 fp = (struct fw_pkt *)rb->vec[0].iov_base; 1931 tcode = fp->mode.common.tcode; 1932 switch (tcode) { 1933 case FWTCODE_WRES: 1934 case FWTCODE_RRESQ: 1935 case FWTCODE_RRESB: 1936 case FWTCODE_LRES: 1937 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1938 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode); 1939 if (rb->xfer == NULL) { 1940 device_printf(rb->fc->bdev, "%s: unknown response " 1941 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n", 1942 __func__, 1943 tcode_str[tcode], tcode, 1944 fp->mode.hdr.src, 1945 fp->mode.hdr.tlrt >> 2, 1946 fp->mode.hdr.tlrt & 3, 1947 fp->mode.rresq.data); 1948 #if 0 1949 printf("try ad-hoc work around!!\n"); 1950 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1951 (fp->mode.hdr.tlrt >> 2)^3); 1952 if (rb->xfer == NULL) { 1953 printf("no use...\n"); 1954 return; 1955 } 1956 #else 1957 return; 1958 #endif 1959 } 1960 fw_rcv_copy(rb); 1961 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP) 1962 rb->xfer->resp = EIO; 1963 else 1964 rb->xfer->resp = 0; 1965 /* make sure the packet is drained in AT queue */ 1966 oldstate = rb->xfer->flag; 1967 rb->xfer->flag = FWXF_RCVD; 1968 switch (oldstate) { 1969 case FWXF_SENT: 1970 fw_xfer_done(rb->xfer); 1971 break; 1972 case FWXF_START: 1973 #if 0 1974 if (firewire_debug) 1975 printf("not sent yet tl=%x\n", rb->xfer->tl); 1976 #endif 1977 break; 1978 default: 1979 device_printf(rb->fc->bdev, "%s: " 1980 "unexpected flag 0x%02x\n", __func__, 1981 rb->xfer->flag); 1982 } 1983 return; 1984 case FWTCODE_WREQQ: 1985 case FWTCODE_WREQB: 1986 case FWTCODE_RREQQ: 1987 case FWTCODE_RREQB: 1988 case FWTCODE_LREQ: 1989 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi, 1990 fp->mode.rreqq.dest_lo); 1991 if (bind == NULL) { 1992 device_printf(rb->fc->bdev, "%s: " 1993 "Unknown service addr 0x%04x:0x%08x %s(%x)" 1994 " src=0x%x data=%x\n", 1995 __func__, 1996 fp->mode.wreqq.dest_hi, 1997 fp->mode.wreqq.dest_lo, 1998 tcode_str[tcode], tcode, 1999 fp->mode.hdr.src, 2000 ntohl(fp->mode.wreqq.data)); 2001 2002 if (rb->fc->status == FWBUSINIT) { 2003 device_printf(rb->fc->bdev, 2004 "%s: cannot respond(bus reset)!\n", 2005 __func__); 2006 return; 2007 } 2008 rb->xfer = fw_xfer_alloc(M_FWXFER); 2009 if (rb->xfer == NULL) { 2010 return; 2011 } 2012 rb->xfer->send.spd = rb->spd; 2013 rb->xfer->send.pay_len = 0; 2014 resfp = &rb->xfer->send.hdr; 2015 switch (tcode) { 2016 case FWTCODE_WREQQ: 2017 case FWTCODE_WREQB: 2018 resfp->mode.hdr.tcode = FWTCODE_WRES; 2019 break; 2020 case FWTCODE_RREQQ: 2021 resfp->mode.hdr.tcode = FWTCODE_RRESQ; 2022 break; 2023 case FWTCODE_RREQB: 2024 resfp->mode.hdr.tcode = FWTCODE_RRESB; 2025 break; 2026 case FWTCODE_LREQ: 2027 resfp->mode.hdr.tcode = FWTCODE_LRES; 2028 break; 2029 } 2030 resfp->mode.hdr.dst = fp->mode.hdr.src; 2031 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt; 2032 resfp->mode.hdr.pri = fp->mode.hdr.pri; 2033 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR; 2034 resfp->mode.rresb.extcode = 0; 2035 resfp->mode.rresb.len = 0; 2036 /* 2037 rb->xfer->hand = fw_xferwake; 2038 */ 2039 rb->xfer->hand = fw_xfer_free; 2040 if (fw_asyreq(rb->fc, -1, rb->xfer)) 2041 fw_xfer_free(rb->xfer); 2042 return; 2043 } 2044 #if 0 2045 len = 0; 2046 for (i = 0; i < rb->nvec; i++) 2047 len += rb->vec[i].iov_len; 2048 #endif 2049 rb->xfer = STAILQ_FIRST(&bind->xferlist); 2050 if (rb->xfer == NULL) { 2051 device_printf(rb->fc->bdev, "%s: " 2052 "Discard a packet for this bind.\n", __func__); 2053 return; 2054 } 2055 STAILQ_REMOVE_HEAD(&bind->xferlist, link); 2056 fw_rcv_copy(rb); 2057 rb->xfer->hand(rb->xfer); 2058 return; 2059 #if 0 /* shouldn't happen ?? or for GASP */ 2060 case FWTCODE_STREAM: 2061 { 2062 struct fw_xferq *xferq; 2063 2064 xferq = rb->fc->ir[sub]; 2065 #if 0 2066 printf("stream rcv dma %d len %d off %d spd %d\n", 2067 sub, len, off, spd); 2068 #endif 2069 if (xferq->queued >= xferq->maxq) { 2070 printf("receive queue is full\n"); 2071 return; 2072 } 2073 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, 2074 vec[0].iov_len); 2075 if (rb->xfer == NULL) 2076 return; 2077 fw_rcv_copy(rb) 2078 s = splfw(); 2079 xferq->queued++; 2080 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link); 2081 splx(s); 2082 sc = device_get_softc(rb->fc->bdev); 2083 if (SEL_WAITING(&xferq->rsel)) 2084 selwakeuppri(&xferq->rsel, FWPRI); 2085 if (xferq->flag & FWXFERQ_WAKEUP) { 2086 xferq->flag &= ~FWXFERQ_WAKEUP; 2087 wakeup((caddr_t)xferq); 2088 } 2089 if (xferq->flag & FWXFERQ_HANDLER) { 2090 xferq->hand(xferq); 2091 } 2092 return; 2093 break; 2094 } 2095 #endif 2096 default: 2097 device_printf(rb->fc->bdev,"%s: unknown tcode %d\n", 2098 __func__, tcode); 2099 break; 2100 } 2101 } 2102 2103 /* 2104 * Post process for Bus Manager election process. 2105 */ 2106 static void 2107 fw_try_bmr_callback(struct fw_xfer *xfer) 2108 { 2109 struct firewire_comm *fc; 2110 int bmr; 2111 2112 if (xfer == NULL) 2113 return; 2114 fc = xfer->fc; 2115 if (xfer->resp != 0) 2116 goto error; 2117 if (xfer->recv.payload == NULL) 2118 goto error; 2119 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE) 2120 goto error; 2121 2122 bmr = ntohl(xfer->recv.payload[0]); 2123 if (bmr == 0x3f) 2124 bmr = fc->nodeid; 2125 2126 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f); 2127 fw_xfer_free_buf(xfer); 2128 fw_bmr(fc); 2129 return; 2130 2131 error: 2132 device_printf(fc->bdev, "bus manager election failed\n"); 2133 fw_xfer_free_buf(xfer); 2134 } 2135 2136 2137 /* 2138 * To candidate Bus Manager election process. 2139 */ 2140 static void 2141 fw_try_bmr(void *arg) 2142 { 2143 struct fw_xfer *xfer; 2144 struct firewire_comm *fc = arg; 2145 struct fw_pkt *fp; 2146 int err = 0; 2147 2148 xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4); 2149 if (xfer == NULL) 2150 return; 2151 xfer->send.spd = 0; 2152 fc->status = FWBUSMGRELECT; 2153 2154 fp = &xfer->send.hdr; 2155 fp->mode.lreq.dest_hi = 0xffff; 2156 fp->mode.lreq.tlrt = 0; 2157 fp->mode.lreq.tcode = FWTCODE_LREQ; 2158 fp->mode.lreq.pri = 0; 2159 fp->mode.lreq.src = 0; 2160 fp->mode.lreq.len = 8; 2161 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP; 2162 fp->mode.lreq.dst = FWLOCALBUS | fc->irm; 2163 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID; 2164 xfer->send.payload[0] = htonl(0x3f); 2165 xfer->send.payload[1] = htonl(fc->nodeid); 2166 xfer->hand = fw_try_bmr_callback; 2167 2168 err = fw_asyreq(fc, -1, xfer); 2169 if (err) { 2170 fw_xfer_free_buf(xfer); 2171 return; 2172 } 2173 return; 2174 } 2175 2176 #ifdef FW_VMACCESS 2177 /* 2178 * Software implementation for physical memory block access. 2179 * Debug only, too slow for production use. 2180 */ 2181 static void 2182 fw_vmaccess(struct fw_xfer *xfer) 2183 { 2184 struct fw_pkt *rfp, *sfp = NULL; 2185 uint32_t *ld = (uint32_t *)xfer->recv.buf; 2186 2187 printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n", 2188 xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), 2189 ntohl(ld[3])); 2190 printf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]), 2191 ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7])); 2192 if (xfer->resp != 0) { 2193 fw_xfer_free(xfer); 2194 return; 2195 } 2196 if (xfer->recv.buf == NULL) { 2197 fw_xfer_free(xfer); 2198 return; 2199 } 2200 rfp = (struct fw_pkt *)xfer->recv.buf; 2201 switch (rfp->mode.hdr.tcode) { 2202 case FWTCODE_WREQB: 2203 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2204 xfer->send.len = 12; 2205 sfp = (struct fw_pkt *)xfer->send.buf; 2206 bcopy(rfp->mode.wreqb.payload, 2207 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo),s 2208 ntohs(rfp->mode.wreqb.len)); 2209 sfp->mode.wres.tcode = FWTCODE_WRES; 2210 sfp->mode.wres.rtcode = 0; 2211 break; 2212 case FWTCODE_WREQQ: 2213 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2214 xfer->send.len = 12; 2215 sfp->mode.wres.tcode = FWTCODE_WRES; 2216 *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = 2217 rfp->mode.wreqq.data; 2218 sfp->mode.wres.rtcode = 0; 2219 break; 2220 case FWTCODE_RREQB: 2221 xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, 2222 M_FW, M_NOWAIT); 2223 xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len); 2224 sfp = (struct fw_pkt *)xfer->send.buf; 2225 bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo), 2226 sfp->mode.rresb.payload, 2227 ntohs(rfp->mode.rreqb.len)); 2228 sfp->mode.rresb.tcode = FWTCODE_RRESB; 2229 sfp->mode.rresb.len = rfp->mode.rreqb.len; 2230 sfp->mode.rresb.rtcode = 0; 2231 sfp->mode.rresb.extcode = 0; 2232 break; 2233 case FWTCODE_RREQQ: 2234 xfer->send.buf = malloc(16, M_FW, M_NOWAIT); 2235 xfer->send.len = 16; 2236 sfp = (struct fw_pkt *)xfer->send.buf; 2237 sfp->mode.rresq.data = 2238 *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo)); 2239 sfp->mode.wres.tcode = FWTCODE_RRESQ; 2240 sfp->mode.rresb.rtcode = 0; 2241 break; 2242 default: 2243 fw_xfer_free(xfer); 2244 return; 2245 } 2246 sfp->mode.hdr.dst = rfp->mode.hdr.src; 2247 xfer->dst = ntohs(rfp->mode.hdr.src); 2248 xfer->hand = fw_xfer_free; 2249 2250 sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt; 2251 sfp->mode.hdr.pri = 0; 2252 2253 fw_asyreq(xfer->fc, -1, xfer); 2254 /**/ 2255 return; 2256 } 2257 #endif 2258 2259 /* 2260 * CRC16 check-sum for IEEE1394 register blocks. 2261 */ 2262 uint16_t 2263 fw_crc16(uint32_t *ptr, uint32_t len) 2264 { 2265 uint32_t i, sum, crc = 0; 2266 int shift; 2267 len = (len + 3) & ~3; 2268 for (i = 0; i < len; i += 4) { 2269 for (shift = 28; shift >= 0; shift -= 4) { 2270 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf; 2271 crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum; 2272 } 2273 crc &= 0xffff; 2274 } 2275 return ((uint16_t) crc); 2276 } 2277 2278 /* 2279 * Find the root node, if it is not 2280 * Cycle Master Capable, then we should 2281 * override this and become the Cycle 2282 * Master 2283 */ 2284 static int 2285 fw_bmr(struct firewire_comm *fc) 2286 { 2287 struct fw_device fwdev; 2288 union fw_self_id *self_id; 2289 int cmstr; 2290 uint32_t quad; 2291 2292 /* Check to see if the current root node is cycle master capable */ 2293 self_id = fw_find_self_id(fc, fc->max_node); 2294 if (fc->max_node > 0) { 2295 if (self_id->p0.link_active && self_id->p0.contender) 2296 cmstr = fc->max_node; 2297 else { 2298 device_printf(fc->bdev, 2299 "root node is not cycle master capable\n"); 2300 /* TODO: issue PHY config to force root change + bus reset */ 2301 cmstr = fc->nodeid; 2302 } 2303 } else 2304 cmstr = -1; 2305 2306 device_printf(fc->bdev, "bus manager %d %s\n", 2307 CSRARC(fc, BUS_MGR_ID), 2308 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : ""); 2309 if (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) { 2310 /* We are not the bus manager */ 2311 return (0); 2312 } 2313 2314 /* Optimize gapcount */ 2315 if (fc->max_hop <= MAX_GAPHOP) 2316 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]); 2317 /* If we are the cycle master, nothing to do */ 2318 if (cmstr == fc->nodeid || cmstr == -1) 2319 return 0; 2320 /* Bus probe has not finished, make dummy fwdev for cmstr */ 2321 bzero(&fwdev, sizeof(fwdev)); 2322 fwdev.fc = fc; 2323 fwdev.dst = cmstr; 2324 fwdev.speed = 0; 2325 fwdev.maxrec = 8; /* 512 */ 2326 fwdev.status = FWDEVINIT; 2327 /* Set cmstr bit on the cycle master */ 2328 quad = htonl(1 << 8); 2329 fwmem_write_quad(&fwdev, NULL, 0/*spd*/, 2330 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free); 2331 2332 return 0; 2333 } 2334 2335 int 2336 fw_open_isodma(struct firewire_comm *fc, int tx) 2337 { 2338 struct fw_xferq **xferqa; 2339 struct fw_xferq *xferq; 2340 int i; 2341 2342 if (tx) 2343 xferqa = &fc->it[0]; 2344 else 2345 xferqa = &fc->ir[0]; 2346 2347 FW_GLOCK(fc); 2348 for (i = 0; i < fc->nisodma; i++) { 2349 xferq = xferqa[i]; 2350 if ((xferq->flag & FWXFERQ_OPEN) == 0) { 2351 xferq->flag |= FWXFERQ_OPEN; 2352 break; 2353 } 2354 } 2355 if (i == fc->nisodma) { 2356 printf("no free dma channel (tx=%d)\n", tx); 2357 i = -1; 2358 } 2359 FW_GUNLOCK(fc); 2360 return (i); 2361 } 2362 2363 static int 2364 fw_modevent(module_t mode, int type, void *data) 2365 { 2366 int err = 0; 2367 static eventhandler_tag fwdev_ehtag = NULL; 2368 2369 switch (type) { 2370 case MOD_LOAD: 2371 firewire_devclass = devclass_create("firewire"); 2372 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone, 2373 fwdev_clone, 0, 1000); 2374 break; 2375 case MOD_UNLOAD: 2376 if (fwdev_ehtag != NULL) 2377 EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag); 2378 break; 2379 case MOD_SHUTDOWN: 2380 break; 2381 default: 2382 return (EOPNOTSUPP); 2383 } 2384 return (err); 2385 } 2386 2387 2388 DRIVER_MODULE(firewire, fwohci, firewire_driver, fw_modevent, NULL); 2389 MODULE_VERSION(firewire, 1); 2390