Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/firewire/firewire.c
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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/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #include <sys/param.h> 41 #include <sys/conf.h> 42 #include <sys/eventhandler.h> 43 #include <sys/jail.h> 44 #include <sys/kernel.h> 45 #include <sys/kthread.h> 46 #include <sys/malloc.h> 47 #include <sys/module.h> 48 #include <sys/sysctl.h> 49 #include <sys/systm.h> 50 51 #include <sys/kdb.h> 52 #include <sys/bus.h> /* used by smbus and newbus */ 53 #include <machine/bus.h> 54 55 #include <dev/firewire/firewire.h> 56 #include <dev/firewire/firewirereg.h> 57 #include <dev/firewire/fwmem.h> 58 #include <dev/firewire/iec13213.h> 59 #include <dev/firewire/iec68113.h> 60 61 struct crom_src_buf { 62 struct crom_src src; 63 struct crom_chunk root; 64 struct crom_chunk vendor; 65 struct crom_chunk hw; 66 }; 67 68 int firewire_debug = 0, try_bmr = 1, hold_count = 0; 69 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0, 70 "FireWire driver debug flag"); 71 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 72 "FireWire Subsystem"); 73 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0, 74 "Try to be a bus manager"); 75 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0, 76 "Number of count of bus resets for removing lost device information"); 77 78 MALLOC_DEFINE(M_FW, "firewire", "FireWire"); 79 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire"); 80 81 #define FW_MAXASYRTY 4 82 83 devclass_t firewire_devclass; 84 85 static void firewire_identify(driver_t *, device_t); 86 static int firewire_probe(device_t); 87 static int firewire_attach(device_t); 88 static int firewire_detach(device_t); 89 static int firewire_resume(device_t); 90 static void firewire_xfer_timeout(void *, int); 91 static device_t firewire_add_child(device_t, u_int, const char *, int); 92 static void fw_try_bmr(void *); 93 static void fw_try_bmr_callback(struct fw_xfer *); 94 static void fw_asystart(struct fw_xfer *); 95 static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *); 96 static void fw_bus_probe(void *); 97 static void fw_attach_dev(struct firewire_comm *); 98 static void fw_bus_probe_thread(void *); 99 #ifdef FW_VMACCESS 100 static void fw_vmaccess (struct fw_xfer *); 101 #endif 102 static int fw_bmr (struct firewire_comm *); 103 static void fw_dump_hdr(struct fw_pkt *, char *); 104 105 static device_method_t firewire_methods[] = { 106 /* Device interface */ 107 DEVMETHOD(device_identify, firewire_identify), 108 DEVMETHOD(device_probe, firewire_probe), 109 DEVMETHOD(device_attach, firewire_attach), 110 DEVMETHOD(device_detach, firewire_detach), 111 DEVMETHOD(device_suspend, bus_generic_suspend), 112 DEVMETHOD(device_resume, firewire_resume), 113 DEVMETHOD(device_shutdown, bus_generic_shutdown), 114 115 /* Bus interface */ 116 DEVMETHOD(bus_add_child, firewire_add_child), 117 118 DEVMETHOD_END 119 }; 120 121 char *linkspeed[] = { 122 "S100", "S200", "S400", "S800", 123 "S1600", "S3200", "undef", "undef" 124 }; 125 126 static char *tcode_str[] = { 127 "WREQQ", "WREQB", "WRES", "undef", 128 "RREQQ", "RREQB", "RRESQ", "RRESB", 129 "CYCS", "LREQ", "STREAM", "LRES", 130 "undef", "undef", "PHY", "undef" 131 }; 132 133 /* IEEE-1394a Table C-2 Gap count as a function of hops*/ 134 #define MAX_GAPHOP 15 135 u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18, 136 21, 24, 26, 29, 32, 35, 37, 40}; 137 138 static driver_t firewire_driver = { 139 "firewire", 140 firewire_methods, 141 sizeof(struct firewire_softc), 142 }; 143 144 /* 145 * Lookup fwdev by node id. 146 */ 147 struct fw_device * 148 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst) 149 { 150 struct fw_device *fwdev; 151 152 FW_GLOCK(fc); 153 STAILQ_FOREACH(fwdev, &fc->devices, link) 154 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL) 155 break; 156 FW_GUNLOCK(fc); 157 158 return fwdev; 159 } 160 161 /* 162 * Lookup fwdev by EUI64. 163 */ 164 struct fw_device * 165 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui) 166 { 167 struct fw_device *fwdev; 168 169 FW_GLOCK(fc); 170 STAILQ_FOREACH(fwdev, &fc->devices, link) 171 if (FW_EUI64_EQUAL(fwdev->eui, *eui)) 172 break; 173 FW_GUNLOCK(fc); 174 175 if (fwdev == NULL) 176 return NULL; 177 if (fwdev->status == FWDEVINVAL) 178 return NULL; 179 return fwdev; 180 } 181 182 /* 183 * Async. request procedure for userland application. 184 */ 185 int 186 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer) 187 { 188 int err = 0; 189 struct fw_xferq *xferq; 190 int len; 191 struct fw_pkt *fp; 192 int tcode; 193 struct tcode_info *info; 194 195 if (xfer == NULL) 196 return EINVAL; 197 if (xfer->hand == NULL) { 198 printf("hand == NULL\n"); 199 return EINVAL; 200 } 201 fp = &xfer->send.hdr; 202 203 tcode = fp->mode.common.tcode & 0xf; 204 info = &fc->tcode[tcode]; 205 if (info->flag == 0) { 206 printf("invalid tcode=%x\n", tcode); 207 return EINVAL; 208 } 209 210 /* XXX allow bus explore packets only after bus rest */ 211 if ((fc->status < FWBUSEXPLORE) && 212 ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) || 213 (fp->mode.rreqq.dest_lo < 0xf0000000) || 214 (fp->mode.rreqq.dest_lo >= 0xf0001000))) { 215 xfer->resp = EAGAIN; 216 xfer->flag = FWXF_BUSY; 217 return (EAGAIN); 218 } 219 220 if (info->flag & FWTI_REQ) 221 xferq = fc->atq; 222 else 223 xferq = fc->ats; 224 len = info->hdr_len; 225 if (xfer->send.pay_len > MAXREC(fc->maxrec)) { 226 printf("send.pay_len > maxrec\n"); 227 return EINVAL; 228 } 229 if (info->flag & FWTI_BLOCK_STR) 230 len = fp->mode.stream.len; 231 else if (info->flag & FWTI_BLOCK_ASY) 232 len = fp->mode.rresb.len; 233 else 234 len = 0; 235 if (len != xfer->send.pay_len) { 236 printf("len(%d) != send.pay_len(%d) %s(%x)\n", 237 len, xfer->send.pay_len, tcode_str[tcode], tcode); 238 return EINVAL; 239 } 240 241 if (xferq->start == NULL) { 242 printf("xferq->start == NULL\n"); 243 return EINVAL; 244 } 245 if (!(xferq->queued < xferq->maxq)) { 246 device_printf(fc->bdev, "Discard a packet (queued=%d)\n", 247 xferq->queued); 248 return EAGAIN; 249 } 250 251 xfer->tl = -1; 252 if (info->flag & FWTI_TLABEL) { 253 if (fw_get_tlabel(fc, xfer) < 0) 254 return EAGAIN; 255 } 256 257 xfer->resp = 0; 258 xfer->fc = fc; 259 xfer->q = xferq; 260 261 fw_asystart(xfer); 262 return err; 263 } 264 265 /* 266 * Wakeup blocked process. 267 */ 268 void 269 fw_xferwake(struct fw_xfer *xfer) 270 { 271 struct mtx *lock = &xfer->fc->wait_lock; 272 273 mtx_lock(lock); 274 xfer->flag |= FWXF_WAKE; 275 mtx_unlock(lock); 276 277 wakeup(xfer); 278 return; 279 } 280 281 int 282 fw_xferwait(struct fw_xfer *xfer) 283 { 284 struct mtx *lock = &xfer->fc->wait_lock; 285 int err = 0; 286 287 mtx_lock(lock); 288 while ((xfer->flag & FWXF_WAKE) == 0) 289 err = msleep(xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0); 290 mtx_unlock(lock); 291 292 return (err); 293 } 294 295 /* 296 * Async. request with given xfer structure. 297 */ 298 static void 299 fw_asystart(struct fw_xfer *xfer) 300 { 301 struct firewire_comm *fc = xfer->fc; 302 303 /* Protect from interrupt/timeout */ 304 FW_GLOCK(fc); 305 xfer->flag = FWXF_INQ; 306 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); 307 #if 0 308 xfer->q->queued++; 309 #endif 310 FW_GUNLOCK(fc); 311 /* XXX just queue for mbuf */ 312 if (xfer->mbuf == NULL) 313 xfer->q->start(fc); 314 return; 315 } 316 317 static void 318 firewire_identify(driver_t *driver, device_t parent) 319 { 320 BUS_ADD_CHILD(parent, 0, "firewire", -1); 321 } 322 323 static int 324 firewire_probe(device_t dev) 325 { 326 device_set_desc(dev, "IEEE1394(FireWire) bus"); 327 return (0); 328 } 329 330 /* Just use a per-packet callout? */ 331 static void 332 firewire_xfer_timeout(void *arg, int pending) 333 { 334 struct firewire_comm *fc = (struct firewire_comm *)arg; 335 struct fw_xfer *xfer, *txfer; 336 struct timeval tv; 337 struct timeval split_timeout; 338 STAILQ_HEAD(, fw_xfer) xfer_timeout; 339 int i; 340 341 split_timeout.tv_sec = 0; 342 split_timeout.tv_usec = 200 * 1000; /* 200 msec */ 343 344 microtime(&tv); 345 timevalsub(&tv, &split_timeout); 346 STAILQ_INIT(&xfer_timeout); 347 348 mtx_lock(&fc->tlabel_lock); 349 for (i = 0; i < nitems(fc->tlabels); i++) { 350 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 351 if ((xfer->flag & FWXF_SENT) == 0) 352 /* not sent yet */ 353 break; 354 if (timevalcmp(&xfer->tv, &tv, >)) 355 /* the rests are newer than this */ 356 break; 357 device_printf(fc->bdev, 358 "split transaction timeout: tl=0x%x flag=0x%02x\n", 359 i, xfer->flag); 360 fw_dump_hdr(&xfer->send.hdr, "send"); 361 xfer->resp = ETIMEDOUT; 362 xfer->tl = -1; 363 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 364 STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel); 365 } 366 } 367 mtx_unlock(&fc->tlabel_lock); 368 fc->timeout(fc); 369 370 STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer) 371 xfer->hand(xfer); 372 } 373 374 #define WATCHDOG_HZ 10 375 static void 376 firewire_watchdog(void *arg) 377 { 378 struct firewire_comm *fc; 379 static int watchdog_clock = 0; 380 381 fc = arg; 382 383 /* 384 * At boot stage, the device interrupt is disabled and 385 * We encounter a timeout easily. To avoid this, 386 * ignore clock interrupt for a while. 387 */ 388 if (watchdog_clock > WATCHDOG_HZ * 15) 389 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout); 390 else 391 watchdog_clock++; 392 393 callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ, 394 firewire_watchdog, fc); 395 } 396 397 /* 398 * The attach routine. 399 */ 400 static int 401 firewire_attach(device_t dev) 402 { 403 int unit; 404 struct firewire_softc *sc = device_get_softc(dev); 405 device_t pa = device_get_parent(dev); 406 struct firewire_comm *fc; 407 408 fc = device_get_softc(pa); 409 sc->fc = fc; 410 fc->status = FWBUSNOTREADY; 411 412 unit = device_get_unit(dev); 413 if (fc->nisodma > FWMAXNDMA) 414 fc->nisodma = FWMAXNDMA; 415 416 fwdev_makedev(sc); 417 418 fc->crom_src_buf = malloc(sizeof(struct crom_src_buf), 419 M_FW, M_NOWAIT | M_ZERO); 420 if (fc->crom_src_buf == NULL) { 421 device_printf(fc->dev, 422 "%s: unable to allocate crom src buffer\n", __func__); 423 return ENOMEM; 424 } 425 fc->topology_map = malloc(sizeof(struct fw_topology_map), 426 M_FW, M_NOWAIT | M_ZERO); 427 if (fc->topology_map == NULL) { 428 device_printf(fc->dev, "%s: unable to allocate topology map\n", 429 __func__); 430 free(fc->crom_src_buf, M_FW); 431 return ENOMEM; 432 } 433 fc->speed_map = malloc(sizeof(struct fw_speed_map), 434 M_FW, M_NOWAIT | M_ZERO); 435 if (fc->speed_map == NULL) { 436 device_printf(fc->dev, "%s: unable to allocate speed map\n", 437 __func__); 438 free(fc->crom_src_buf, M_FW); 439 free(fc->topology_map, M_FW); 440 return ENOMEM; 441 } 442 443 mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF); 444 mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF); 445 CALLOUT_INIT(&fc->timeout_callout); 446 CALLOUT_INIT(&fc->bmr_callout); 447 CALLOUT_INIT(&fc->busprobe_callout); 448 TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, fc); 449 450 callout_reset(&sc->fc->timeout_callout, hz, 451 firewire_watchdog, sc->fc); 452 453 /* create thread */ 454 kproc_create(fw_bus_probe_thread, fc, &fc->probe_thread, 455 0, 0, "fw%d_probe", unit); 456 457 /* Locate our children */ 458 bus_generic_probe(dev); 459 460 /* launch attachement of the added children */ 461 bus_generic_attach(dev); 462 463 /* bus_reset */ 464 FW_GLOCK(fc); 465 fw_busreset(fc, FWBUSNOTREADY); 466 FW_GUNLOCK(fc); 467 fc->ibr(fc); 468 469 return 0; 470 } 471 472 /* 473 * Attach it as child. 474 */ 475 static device_t 476 firewire_add_child(device_t dev, u_int order, const char *name, int unit) 477 { 478 device_t child; 479 struct firewire_softc *sc; 480 481 sc = device_get_softc(dev); 482 child = device_add_child(dev, name, unit); 483 if (child) { 484 device_set_ivars(child, sc->fc); 485 device_probe_and_attach(child); 486 } 487 488 return child; 489 } 490 491 static int 492 firewire_resume(device_t dev) 493 { 494 struct firewire_softc *sc; 495 496 sc = device_get_softc(dev); 497 sc->fc->status = FWBUSNOTREADY; 498 499 bus_generic_resume(dev); 500 501 return (0); 502 } 503 504 /* 505 * Detach it. 506 */ 507 static int 508 firewire_detach(device_t dev) 509 { 510 struct firewire_softc *sc; 511 struct firewire_comm *fc; 512 struct fw_device *fwdev, *fwdev_next; 513 int err; 514 515 sc = device_get_softc(dev); 516 fc = sc->fc; 517 mtx_lock(&fc->wait_lock); 518 fc->status = FWBUSDETACH; 519 wakeup(fc); 520 if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60)) 521 printf("firewire probe thread didn't die\n"); 522 mtx_unlock(&fc->wait_lock); 523 524 if (fc->arq != 0 && fc->arq->maxq > 0) 525 fw_drain_txq(fc); 526 527 if ((err = fwdev_destroydev(sc)) != 0) 528 return err; 529 530 if ((err = bus_generic_detach(dev)) != 0) 531 return err; 532 533 callout_stop(&fc->timeout_callout); 534 callout_stop(&fc->bmr_callout); 535 callout_stop(&fc->busprobe_callout); 536 537 /* XXX xfer_free and untimeout on all xfers */ 538 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; 539 fwdev = fwdev_next) { 540 fwdev_next = STAILQ_NEXT(fwdev, link); 541 free(fwdev, M_FW); 542 } 543 free(fc->topology_map, M_FW); 544 free(fc->speed_map, M_FW); 545 free(fc->crom_src_buf, M_FW); 546 547 mtx_destroy(&fc->tlabel_lock); 548 mtx_destroy(&fc->wait_lock); 549 return (0); 550 } 551 552 static void 553 fw_xferq_drain(struct fw_xferq *xferq) 554 { 555 struct fw_xfer *xfer; 556 557 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) { 558 STAILQ_REMOVE_HEAD(&xferq->q, link); 559 #if 0 560 xferq->queued--; 561 #endif 562 xfer->resp = EAGAIN; 563 xfer->flag = FWXF_SENTERR; 564 fw_xfer_done(xfer); 565 } 566 } 567 568 void 569 fw_drain_txq(struct firewire_comm *fc) 570 { 571 struct fw_xfer *xfer, *txfer; 572 STAILQ_HEAD(, fw_xfer) xfer_drain; 573 int i; 574 575 STAILQ_INIT(&xfer_drain); 576 577 FW_GLOCK(fc); 578 fw_xferq_drain(fc->atq); 579 fw_xferq_drain(fc->ats); 580 for (i = 0; i < fc->nisodma; i++) 581 fw_xferq_drain(fc->it[i]); 582 FW_GUNLOCK(fc); 583 584 mtx_lock(&fc->tlabel_lock); 585 for (i = 0; i < 0x40; i++) 586 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 587 if (firewire_debug) 588 printf("tl=%d flag=%d\n", i, xfer->flag); 589 xfer->tl = -1; 590 xfer->resp = EAGAIN; 591 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 592 STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel); 593 } 594 mtx_unlock(&fc->tlabel_lock); 595 596 STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer) 597 xfer->hand(xfer); 598 } 599 600 static void 601 fw_reset_csr(struct firewire_comm *fc) 602 { 603 int i; 604 605 CSRARC(fc, STATE_CLEAR) 606 = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 607 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 608 CSRARC(fc, NODE_IDS) = 0x3f; 609 610 CSRARC(fc, TOPO_MAP + 8) = 0; 611 fc->irm = -1; 612 613 fc->max_node = -1; 614 615 for (i = 2; i < 0x100 / 4 - 2; i++) { 616 CSRARC(fc, SPED_MAP + i * 4) = 0; 617 } 618 CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 619 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 620 CSRARC(fc, RESET_START) = 0; 621 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0; 622 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19; 623 CSRARC(fc, CYCLE_TIME) = 0x0; 624 CSRARC(fc, BUS_TIME) = 0x0; 625 CSRARC(fc, BUS_MGR_ID) = 0x3f; 626 CSRARC(fc, BANDWIDTH_AV) = 4915; 627 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; 628 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; 629 CSRARC(fc, IP_CHANNELS) = (1U << 31); 630 631 CSRARC(fc, CONF_ROM) = 0x04 << 24; 632 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */ 633 CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 | 634 1 << 28 | 0xff << 16 | 0x09 << 8; 635 CSRARC(fc, CONF_ROM + 0xc) = 0; 636 637 /* DV depend CSRs see blue book */ 638 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON; 639 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON; 640 641 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14); 642 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 643 } 644 645 static void 646 fw_init_crom(struct firewire_comm *fc) 647 { 648 struct crom_src *src; 649 650 src = &fc->crom_src_buf->src; 651 bzero(src, sizeof(struct crom_src)); 652 653 /* BUS info sample */ 654 src->hdr.info_len = 4; 655 656 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394; 657 658 src->businfo.irmc = 1; 659 src->businfo.cmc = 1; 660 src->businfo.isc = 1; 661 src->businfo.bmc = 1; 662 src->businfo.pmc = 0; 663 src->businfo.cyc_clk_acc = 100; 664 src->businfo.max_rec = fc->maxrec; 665 src->businfo.max_rom = MAXROM_4; 666 #define FW_GENERATION_CHANGEABLE 2 667 src->businfo.generation = FW_GENERATION_CHANGEABLE; 668 src->businfo.link_spd = fc->speed; 669 670 src->businfo.eui64.hi = fc->eui.hi; 671 src->businfo.eui64.lo = fc->eui.lo; 672 673 STAILQ_INIT(&src->chunk_list); 674 675 fc->crom_src = src; 676 fc->crom_root = &fc->crom_src_buf->root; 677 } 678 679 static void 680 fw_reset_crom(struct firewire_comm *fc) 681 { 682 struct crom_src_buf *buf; 683 struct crom_src *src; 684 struct crom_chunk *root; 685 686 buf = fc->crom_src_buf; 687 src = fc->crom_src; 688 root = fc->crom_root; 689 690 STAILQ_INIT(&src->chunk_list); 691 692 bzero(root, sizeof(struct crom_chunk)); 693 crom_add_chunk(src, NULL, root, 0); 694 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */ 695 /* private company_id */ 696 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); 697 crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project"); 698 crom_add_entry(root, CSRKEY_HW, __FreeBSD_version); 699 mtx_lock(&prison0.pr_mtx); 700 crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname); 701 mtx_unlock(&prison0.pr_mtx); 702 } 703 704 /* 705 * Called after bus reset. 706 */ 707 void 708 fw_busreset(struct firewire_comm *fc, uint32_t new_status) 709 { 710 struct firewire_dev_comm *fdc; 711 struct crom_src *src; 712 device_t *devlistp; 713 uint32_t *newrom; 714 int i, devcnt; 715 716 FW_GLOCK_ASSERT(fc); 717 if (fc->status == FWBUSMGRELECT) 718 callout_stop(&fc->bmr_callout); 719 720 fc->status = new_status; 721 fw_reset_csr(fc); 722 723 if (fc->status == FWBUSNOTREADY) 724 fw_init_crom(fc); 725 726 fw_reset_crom(fc); 727 728 if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) { 729 for (i = 0; i < devcnt; i++) 730 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 731 fdc = device_get_softc(devlistp[i]); 732 if (fdc->post_busreset != NULL) 733 fdc->post_busreset(fdc); 734 } 735 free(devlistp, M_TEMP); 736 } 737 738 src = &fc->crom_src_buf->src; 739 /* 740 * If the old config rom needs to be overwritten, 741 * bump the businfo.generation indicator to 742 * indicate that we need to be reprobed 743 * See 1394a-2000 8.3.2.5.4 for more details. 744 * generation starts at 2 and rolls over at 0xF 745 * back to 2. 746 * 747 * A generation of 0 indicates a device 748 * that is not 1394a-2000 compliant. 749 * A generation of 1 indicates a device that 750 * does not change it's Bus Info Block or 751 * Configuration ROM. 752 */ 753 #define FW_MAX_GENERATION 0xF 754 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); 755 src = &fc->crom_src_buf->src; 756 crom_load(src, newrom, CROMSIZE); 757 if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) { 758 /* Bump generation and reload. */ 759 src->businfo.generation++; 760 761 /* Handle generation count wraps. */ 762 if (src->businfo.generation < FW_GENERATION_CHANGEABLE) 763 src->businfo.generation = FW_GENERATION_CHANGEABLE; 764 765 /* Recalculate CRC to account for generation change. */ 766 crom_load(src, newrom, CROMSIZE); 767 bcopy(newrom, fc->config_rom, CROMSIZE); 768 } 769 free(newrom, M_FW); 770 } 771 772 /* Call once after reboot */ 773 void fw_init(struct firewire_comm *fc) 774 { 775 int i; 776 #ifdef FW_VMACCESS 777 struct fw_xfer *xfer; 778 struct fw_bind *fwb; 779 #endif 780 781 fc->arq->queued = 0; 782 fc->ars->queued = 0; 783 fc->atq->queued = 0; 784 fc->ats->queued = 0; 785 786 fc->arq->buf = NULL; 787 fc->ars->buf = NULL; 788 fc->atq->buf = NULL; 789 fc->ats->buf = NULL; 790 791 fc->arq->flag = 0; 792 fc->ars->flag = 0; 793 fc->atq->flag = 0; 794 fc->ats->flag = 0; 795 796 STAILQ_INIT(&fc->atq->q); 797 STAILQ_INIT(&fc->ats->q); 798 799 for (i = 0; i < fc->nisodma; i++) { 800 fc->it[i]->queued = 0; 801 fc->ir[i]->queued = 0; 802 803 fc->it[i]->start = NULL; 804 fc->ir[i]->start = NULL; 805 806 fc->it[i]->buf = NULL; 807 fc->ir[i]->buf = NULL; 808 809 fc->it[i]->flag = FWXFERQ_STREAM; 810 fc->ir[i]->flag = FWXFERQ_STREAM; 811 812 STAILQ_INIT(&fc->it[i]->q); 813 STAILQ_INIT(&fc->ir[i]->q); 814 } 815 816 fc->arq->maxq = FWMAXQUEUE; 817 fc->ars->maxq = FWMAXQUEUE; 818 fc->atq->maxq = FWMAXQUEUE; 819 fc->ats->maxq = FWMAXQUEUE; 820 821 for (i = 0; i < fc->nisodma; i++) { 822 fc->ir[i]->maxq = FWMAXQUEUE; 823 fc->it[i]->maxq = FWMAXQUEUE; 824 } 825 826 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16; 827 CSRARC(fc, TOPO_MAP + 4) = 1; 828 CSRARC(fc, SPED_MAP) = 0x3f1 << 16; 829 CSRARC(fc, SPED_MAP + 4) = 1; 830 831 STAILQ_INIT(&fc->devices); 832 833 /* Initialize Async handlers */ 834 STAILQ_INIT(&fc->binds); 835 for (i = 0; i < 0x40; i++) { 836 STAILQ_INIT(&fc->tlabels[i]); 837 } 838 839 /* DV depend CSRs see blue book */ 840 #if 0 841 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */ 842 CSRARC(fc, oPCR) = 0x8000007a; 843 for (i = 4; i < 0x7c/4; i += 4) { 844 CSRARC(fc, i + oPCR) = 0x8000007a; 845 } 846 847 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */ 848 CSRARC(fc, iPCR) = 0x803f0000; 849 for (i = 4; i < 0x7c/4; i += 4) { 850 CSRARC(fc, i + iPCR) = 0x0; 851 } 852 #endif 853 854 fc->crom_src_buf = NULL; 855 856 #ifdef FW_VMACCESS 857 xfer = fw_xfer_alloc(); 858 if (xfer == NULL) 859 return; 860 861 fwb = malloc(sizeof(struct fw_bind), M_FW, M_NOWAIT); 862 if (fwb == NULL) { 863 fw_xfer_free(xfer); 864 return; 865 } 866 xfer->hand = fw_vmaccess; 867 xfer->fc = fc; 868 xfer->sc = NULL; 869 870 fwb->start_hi = 0x2; 871 fwb->start_lo = 0; 872 fwb->addrlen = 0xffffffff; 873 fwb->xfer = xfer; 874 fw_bindadd(fc, fwb); 875 #endif 876 } 877 878 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)? -1 : \ 879 ((fwb)->end < (addr)) ? 1 : 0) 880 881 /* 882 * To lookup bound process from IEEE1394 address. 883 */ 884 struct fw_bind * 885 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo) 886 { 887 u_int64_t addr; 888 struct fw_bind *tfw, *r = NULL; 889 890 addr = ((u_int64_t)dest_hi << 32) | dest_lo; 891 FW_GLOCK(fc); 892 STAILQ_FOREACH(tfw, &fc->binds, fclist) 893 if (BIND_CMP(addr, tfw) == 0) { 894 r = tfw; 895 break; 896 } 897 FW_GUNLOCK(fc); 898 return (r); 899 } 900 901 /* 902 * To bind IEEE1394 address block to process. 903 */ 904 int 905 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb) 906 { 907 struct fw_bind *tfw, *prev = NULL; 908 int r = 0; 909 910 if (fwb->start > fwb->end) { 911 printf("%s: invalid range\n", __func__); 912 return EINVAL; 913 } 914 915 FW_GLOCK(fc); 916 STAILQ_FOREACH(tfw, &fc->binds, fclist) { 917 if (fwb->end < tfw->start) 918 break; 919 prev = tfw; 920 } 921 if (prev == NULL) 922 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist); 923 else if (prev->end < fwb->start) 924 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist); 925 else { 926 printf("%s: bind failed\n", __func__); 927 r = EBUSY; 928 } 929 FW_GUNLOCK(fc); 930 return (r); 931 } 932 933 /* 934 * To free IEEE1394 address block. 935 */ 936 int 937 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb) 938 { 939 #if 0 940 struct fw_xfer *xfer, *next; 941 #endif 942 struct fw_bind *tfw; 943 int s; 944 945 s = splfw(); 946 FW_GLOCK(fc); 947 STAILQ_FOREACH(tfw, &fc->binds, fclist) 948 if (tfw == fwb) { 949 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist); 950 goto found; 951 } 952 953 printf("%s: no such binding\n", __func__); 954 FW_GUNLOCK(fc); 955 splx(s); 956 return (1); 957 found: 958 #if 0 959 /* shall we do this? */ 960 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) { 961 next = STAILQ_NEXT(xfer, link); 962 fw_xfer_free(xfer); 963 } 964 STAILQ_INIT(&fwb->xferlist); 965 #endif 966 FW_GUNLOCK(fc); 967 968 splx(s); 969 return 0; 970 } 971 972 int 973 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type, 974 int slen, int rlen, int n, 975 struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *)) 976 { 977 int i, s; 978 struct fw_xfer *xfer; 979 980 for (i = 0; i < n; i++) { 981 xfer = fw_xfer_alloc_buf(type, slen, rlen); 982 if (xfer == NULL) 983 return (i); 984 xfer->fc = fc; 985 xfer->sc = sc; 986 xfer->hand = hand; 987 s = splfw(); 988 STAILQ_INSERT_TAIL(q, xfer, link); 989 splx(s); 990 } 991 return (n); 992 } 993 994 void 995 fw_xferlist_remove(struct fw_xferlist *q) 996 { 997 struct fw_xfer *xfer, *next; 998 999 for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) { 1000 next = STAILQ_NEXT(xfer, link); 1001 fw_xfer_free_buf(xfer); 1002 } 1003 STAILQ_INIT(q); 1004 } 1005 /* 1006 * dump packet header 1007 */ 1008 static void 1009 fw_dump_hdr(struct fw_pkt *fp, char *prefix) 1010 { 1011 printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x " 1012 "src=0x%03x\n", prefix, 1013 fp->mode.hdr.dst & 0x3f, 1014 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3, 1015 fp->mode.hdr.tcode, fp->mode.hdr.pri, 1016 fp->mode.hdr.src); 1017 } 1018 1019 /* 1020 * To free transaction label. 1021 */ 1022 static void 1023 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer) 1024 { 1025 struct fw_xfer *txfer; 1026 1027 mtx_lock(&fc->tlabel_lock); 1028 if (xfer->tl < 0) { 1029 mtx_unlock(&fc->tlabel_lock); 1030 return; 1031 } 1032 /* make sure the label is allocated */ 1033 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) 1034 if (txfer == xfer) 1035 break; 1036 if (txfer == NULL) { 1037 printf("%s: the xfer is not in the queue " 1038 "(tlabel=%d, flag=0x%x)\n", 1039 __FUNCTION__, xfer->tl, xfer->flag); 1040 fw_dump_hdr(&xfer->send.hdr, "send"); 1041 fw_dump_hdr(&xfer->recv.hdr, "recv"); 1042 kdb_backtrace(); 1043 mtx_unlock(&fc->tlabel_lock); 1044 return; 1045 } 1046 1047 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); 1048 xfer->tl = -1; 1049 mtx_unlock(&fc->tlabel_lock); 1050 return; 1051 } 1052 1053 /* 1054 * To obtain XFER structure by transaction label. 1055 */ 1056 static struct fw_xfer * 1057 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode) 1058 { 1059 struct fw_xfer *xfer; 1060 int s = splfw(); 1061 int req; 1062 1063 mtx_lock(&fc->tlabel_lock); 1064 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) 1065 if (xfer->send.hdr.mode.hdr.dst == node) { 1066 mtx_unlock(&fc->tlabel_lock); 1067 splx(s); 1068 KASSERT(xfer->tl == tlabel, 1069 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel)); 1070 /* extra sanity check */ 1071 req = xfer->send.hdr.mode.hdr.tcode; 1072 if (xfer->fc->tcode[req].valid_res != tcode) { 1073 printf("%s: invalid response tcode " 1074 "(0x%x for 0x%x)\n", __FUNCTION__, 1075 tcode, req); 1076 return (NULL); 1077 } 1078 1079 if (firewire_debug > 2) 1080 printf("fw_tl2xfer: found tl=%d\n", tlabel); 1081 return (xfer); 1082 } 1083 mtx_unlock(&fc->tlabel_lock); 1084 if (firewire_debug > 1) 1085 printf("fw_tl2xfer: not found tl=%d\n", tlabel); 1086 splx(s); 1087 return (NULL); 1088 } 1089 1090 /* 1091 * To allocate IEEE1394 XFER structure. 1092 */ 1093 struct fw_xfer * 1094 fw_xfer_alloc(struct malloc_type *type) 1095 { 1096 struct fw_xfer *xfer; 1097 1098 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO); 1099 if (xfer == NULL) 1100 return xfer; 1101 1102 xfer->malloc = type; 1103 xfer->tl = -1; 1104 1105 return xfer; 1106 } 1107 1108 struct fw_xfer * 1109 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len) 1110 { 1111 struct fw_xfer *xfer; 1112 1113 xfer = fw_xfer_alloc(type); 1114 if (xfer == NULL) 1115 return (NULL); 1116 xfer->send.pay_len = send_len; 1117 xfer->recv.pay_len = recv_len; 1118 if (send_len > 0) { 1119 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO); 1120 if (xfer->send.payload == NULL) { 1121 fw_xfer_free(xfer); 1122 return (NULL); 1123 } 1124 } 1125 if (recv_len > 0) { 1126 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT); 1127 if (xfer->recv.payload == NULL) { 1128 if (xfer->send.payload != NULL) 1129 free(xfer->send.payload, type); 1130 fw_xfer_free(xfer); 1131 return (NULL); 1132 } 1133 } 1134 return (xfer); 1135 } 1136 1137 /* 1138 * IEEE1394 XFER post process. 1139 */ 1140 void 1141 fw_xfer_done(struct fw_xfer *xfer) 1142 { 1143 if (xfer->hand == NULL) { 1144 printf("hand == NULL\n"); 1145 return; 1146 } 1147 1148 if (xfer->fc == NULL) 1149 panic("fw_xfer_done: why xfer->fc is NULL?"); 1150 1151 fw_tl_free(xfer->fc, xfer); 1152 xfer->hand(xfer); 1153 } 1154 1155 void 1156 fw_xfer_unload(struct fw_xfer *xfer) 1157 { 1158 1159 if (xfer == NULL) 1160 return; 1161 1162 if (xfer->fc != NULL) { 1163 FW_GLOCK(xfer->fc); 1164 if (xfer->flag & FWXF_INQ) { 1165 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); 1166 xfer->flag &= ~FWXF_INQ; 1167 #if 0 1168 xfer->q->queued--; 1169 #endif 1170 } 1171 FW_GUNLOCK(xfer->fc); 1172 1173 /* 1174 * Ensure that any tlabel owner can't access this 1175 * xfer after it's freed. 1176 */ 1177 fw_tl_free(xfer->fc, xfer); 1178 #if 1 1179 if (xfer->flag & FWXF_START) 1180 /* 1181 * This could happen if: 1182 * 1. We call fwohci_arcv() before fwohci_txd(). 1183 * 2. firewire_watch() is called. 1184 */ 1185 printf("fw_xfer_free FWXF_START\n"); 1186 #endif 1187 } 1188 xfer->flag = FWXF_INIT; 1189 xfer->resp = 0; 1190 } 1191 1192 /* 1193 * To free IEEE1394 XFER structure. 1194 */ 1195 void 1196 fw_xfer_free_buf(struct fw_xfer *xfer) 1197 { 1198 if (xfer == NULL) { 1199 printf("%s: xfer == NULL\n", __func__); 1200 return; 1201 } 1202 fw_xfer_unload(xfer); 1203 if (xfer->send.payload != NULL) 1204 free(xfer->send.payload, xfer->malloc); 1205 if (xfer->recv.payload != NULL) 1206 free(xfer->recv.payload, xfer->malloc); 1207 free(xfer, xfer->malloc); 1208 } 1209 1210 void 1211 fw_xfer_free(struct fw_xfer *xfer) 1212 { 1213 if (xfer == NULL) { 1214 printf("%s: xfer == NULL\n", __func__); 1215 return; 1216 } 1217 fw_xfer_unload(xfer); 1218 free(xfer, xfer->malloc); 1219 } 1220 1221 void 1222 fw_asy_callback_free(struct fw_xfer *xfer) 1223 { 1224 #if 0 1225 printf("asyreq done flag=0x%02x resp=%d\n", 1226 xfer->flag, xfer->resp); 1227 #endif 1228 fw_xfer_free(xfer); 1229 } 1230 1231 /* 1232 * To configure PHY. 1233 */ 1234 static void 1235 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count) 1236 { 1237 struct fw_xfer *xfer; 1238 struct fw_pkt *fp; 1239 1240 fc->status = FWBUSPHYCONF; 1241 1242 xfer = fw_xfer_alloc(M_FWXFER); 1243 if (xfer == NULL) 1244 return; 1245 xfer->fc = fc; 1246 xfer->hand = fw_asy_callback_free; 1247 1248 fp = &xfer->send.hdr; 1249 fp->mode.ld[1] = 0; 1250 if (root_node >= 0) 1251 fp->mode.ld[1] |= (1 << 23) | (root_node & 0x3f) << 24; 1252 if (gap_count >= 0) 1253 fp->mode.ld[1] |= (1 << 22) | (gap_count & 0x3f) << 16; 1254 fp->mode.ld[2] = ~fp->mode.ld[1]; 1255 /* XXX Dangerous, how to pass PHY packet to device driver */ 1256 fp->mode.common.tcode |= FWTCODE_PHY; 1257 1258 if (firewire_debug) 1259 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n", 1260 __func__, root_node, gap_count); 1261 fw_asyreq(fc, -1, xfer); 1262 } 1263 1264 /* 1265 * Dump self ID. 1266 */ 1267 static void 1268 fw_print_sid(uint32_t sid) 1269 { 1270 union fw_self_id *s; 1271 s = (union fw_self_id *) &sid; 1272 if (s->p0.sequel) { 1273 if (s->p1.sequence_num == FW_SELF_ID_PAGE0) { 1274 printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d" 1275 "p8:%d p9:%d p10:%d\n", 1276 s->p1.phy_id, s->p1.port3, s->p1.port4, 1277 s->p1.port5, s->p1.port6, s->p1.port7, 1278 s->p1.port8, s->p1.port9, s->p1.port10); 1279 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) { 1280 printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n", 1281 s->p2.phy_id, s->p2.port11, s->p2.port12, 1282 s->p2.port13, s->p2.port14, s->p2.port15); 1283 } else { 1284 printf("node:%d Unknown Self ID Page number %d\n", 1285 s->p1.phy_id, s->p1.sequence_num); 1286 } 1287 } else { 1288 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d" 1289 " p0:%d p1:%d p2:%d i:%d m:%d\n", 1290 s->p0.phy_id, s->p0.link_active, s->p0.gap_count, 1291 s->p0.phy_speed, s->p0.contender, 1292 s->p0.power_class, s->p0.port0, s->p0.port1, 1293 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets); 1294 } 1295 } 1296 1297 /* 1298 * To receive self ID. 1299 */ 1300 void fw_sidrcv(struct firewire_comm *fc, uint32_t *sid, u_int len) 1301 { 1302 uint32_t *p; 1303 union fw_self_id *self_id; 1304 u_int i, j, node, c_port = 0, i_branch = 0; 1305 1306 fc->sid_cnt = len / (sizeof(uint32_t) * 2); 1307 fc->max_node = fc->nodeid & 0x3f; 1308 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16; 1309 fc->status = FWBUSCYMELECT; 1310 fc->topology_map->crc_len = 2; 1311 fc->topology_map->generation++; 1312 fc->topology_map->self_id_count = 0; 1313 fc->topology_map->node_count= 0; 1314 fc->speed_map->generation++; 1315 fc->speed_map->crc_len = 1 + (64 * 64 + 3) / 4; 1316 self_id = &fc->topology_map->self_id[0]; 1317 for (i = 0; i < fc->sid_cnt; i++) { 1318 if (sid[1] != ~sid[0]) { 1319 device_printf(fc->bdev, 1320 "%s: ERROR invalid self-id packet\n", __func__); 1321 sid += 2; 1322 continue; 1323 } 1324 *self_id = *((union fw_self_id *)sid); 1325 fc->topology_map->crc_len++; 1326 if (self_id->p0.sequel == 0) { 1327 fc->topology_map->node_count++; 1328 c_port = 0; 1329 if (firewire_debug) 1330 fw_print_sid(sid[0]); 1331 node = self_id->p0.phy_id; 1332 if (fc->max_node < node) 1333 fc->max_node = self_id->p0.phy_id; 1334 /* XXX I'm not sure this is the right speed_map */ 1335 fc->speed_map->speed[node][node] = 1336 self_id->p0.phy_speed; 1337 for (j = 0; j < node; j++) { 1338 fc->speed_map->speed[j][node] = 1339 fc->speed_map->speed[node][j] = 1340 min(fc->speed_map->speed[j][j], 1341 self_id->p0.phy_speed); 1342 } 1343 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) && 1344 (self_id->p0.link_active && self_id->p0.contender)) 1345 fc->irm = self_id->p0.phy_id; 1346 if (self_id->p0.port0 >= 0x2) 1347 c_port++; 1348 if (self_id->p0.port1 >= 0x2) 1349 c_port++; 1350 if (self_id->p0.port2 >= 0x2) 1351 c_port++; 1352 } 1353 if (c_port > 2) 1354 i_branch += (c_port - 2); 1355 sid += 2; 1356 self_id++; 1357 fc->topology_map->self_id_count++; 1358 } 1359 /* CRC */ 1360 fc->topology_map->crc = fw_crc16( 1361 (uint32_t *)&fc->topology_map->generation, 1362 fc->topology_map->crc_len * 4); 1363 fc->speed_map->crc = fw_crc16( 1364 (uint32_t *)&fc->speed_map->generation, 1365 fc->speed_map->crc_len * 4); 1366 /* byteswap and copy to CSR */ 1367 p = (uint32_t *)fc->topology_map; 1368 for (i = 0; i <= fc->topology_map->crc_len; i++) 1369 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++); 1370 p = (uint32_t *)fc->speed_map; 1371 CSRARC(fc, SPED_MAP) = htonl(*p++); 1372 CSRARC(fc, SPED_MAP + 4) = htonl(*p++); 1373 /* don't byte-swap uint8_t array */ 1374 bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1) * 4); 1375 1376 fc->max_hop = fc->max_node - i_branch; 1377 device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n", 1378 fc->max_node + 1, fc->max_hop, 1379 (fc->irm == -1) ? "Not IRM capable" : "cable IRM", 1380 fc->irm, (fc->irm == fc->nodeid) ? " (me) " : ""); 1381 1382 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) { 1383 if (fc->irm == fc->nodeid) { 1384 fc->status = FWBUSMGRDONE; 1385 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm); 1386 fw_bmr(fc); 1387 } else { 1388 fc->status = FWBUSMGRELECT; 1389 callout_reset(&fc->bmr_callout, hz / 8, 1390 fw_try_bmr, fc); 1391 } 1392 } else 1393 fc->status = FWBUSMGRDONE; 1394 1395 callout_reset(&fc->busprobe_callout, hz / 4, fw_bus_probe, fc); 1396 } 1397 1398 /* 1399 * To probe devices on the IEEE1394 bus. 1400 */ 1401 static void 1402 fw_bus_probe(void *arg) 1403 { 1404 struct firewire_comm *fc; 1405 struct fw_device *fwdev; 1406 int s; 1407 1408 s = splfw(); 1409 fc = arg; 1410 fc->status = FWBUSEXPLORE; 1411 1412 /* Invalidate all devices, just after bus reset. */ 1413 if (firewire_debug) 1414 device_printf(fc->bdev, "%s:" 1415 "iterate and invalidate all nodes\n", 1416 __func__); 1417 STAILQ_FOREACH(fwdev, &fc->devices, link) 1418 if (fwdev->status != FWDEVINVAL) { 1419 fwdev->status = FWDEVINVAL; 1420 fwdev->rcnt = 0; 1421 if (firewire_debug) 1422 device_printf(fc->bdev, "%s:" 1423 "Invalidate Dev ID: %08x%08x\n", 1424 __func__, fwdev->eui.hi, fwdev->eui.lo); 1425 } else { 1426 if (firewire_debug) 1427 device_printf(fc->bdev, "%s:" 1428 "Dev ID: %08x%08x already invalid\n", 1429 __func__, fwdev->eui.hi, fwdev->eui.lo); 1430 } 1431 splx(s); 1432 1433 wakeup(fc); 1434 } 1435 1436 static int 1437 fw_explore_read_quads(struct fw_device *fwdev, int offset, 1438 uint32_t *quad, int length) 1439 { 1440 struct fw_xfer *xfer; 1441 uint32_t tmp; 1442 int i, error; 1443 1444 for (i = 0; i < length; i++, offset += sizeof(uint32_t)) { 1445 xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff, 1446 0xf0000000 | offset, &tmp, fw_xferwake); 1447 if (xfer == NULL) 1448 return (-1); 1449 fw_xferwait(xfer); 1450 1451 if (xfer->resp == 0) 1452 quad[i] = ntohl(tmp); 1453 1454 error = xfer->resp; 1455 fw_xfer_free(xfer); 1456 if (error) 1457 return (error); 1458 } 1459 return (0); 1460 } 1461 1462 1463 static int 1464 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur) 1465 { 1466 int err, i, off; 1467 struct csrdirectory *dir; 1468 struct csrreg *reg; 1469 1470 dir = (struct csrdirectory *)&fwdev->csrrom[offset / sizeof(uint32_t)]; 1471 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1472 (uint32_t *)dir, 1); 1473 if (err) 1474 return (-1); 1475 1476 offset += sizeof(uint32_t); 1477 reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)]; 1478 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1479 (uint32_t *)reg, dir->crc_len); 1480 if (err) 1481 return (-1); 1482 1483 /* XXX check CRC */ 1484 1485 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1); 1486 if (fwdev->rommax < off) 1487 fwdev->rommax = off; 1488 1489 if (recur == 0) 1490 return (0); 1491 1492 for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) { 1493 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D) 1494 recur = 1; 1495 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L) 1496 recur = 0; 1497 else 1498 continue; 1499 1500 off = offset + reg[i].val * sizeof(uint32_t); 1501 if (off > CROMSIZE) { 1502 printf("%s: invalid offset %d\n", __FUNCTION__, off); 1503 return (-1); 1504 } 1505 err = fw_explore_csrblock(fwdev, off, recur); 1506 if (err) 1507 return (-1); 1508 } 1509 return (0); 1510 } 1511 1512 static int 1513 fw_explore_node(struct fw_device *dfwdev) 1514 { 1515 struct firewire_comm *fc; 1516 struct fw_device *fwdev, *pfwdev, *tfwdev; 1517 uint32_t *csr; 1518 struct csrhdr *hdr; 1519 struct bus_info *binfo; 1520 int err, node; 1521 uint32_t speed_test = 0; 1522 1523 fc = dfwdev->fc; 1524 csr = dfwdev->csrrom; 1525 node = dfwdev->dst; 1526 1527 /* First quad */ 1528 err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1); 1529 if (err) { 1530 dfwdev->status = FWDEVINVAL; 1531 return (-1); 1532 } 1533 hdr = (struct csrhdr *)&csr[0]; 1534 if (hdr->info_len != 4) { 1535 if (firewire_debug) 1536 device_printf(fc->bdev, 1537 "%s: node%d: wrong bus info len(%d)\n", 1538 __func__, node, hdr->info_len); 1539 dfwdev->status = FWDEVINVAL; 1540 return (-1); 1541 } 1542 1543 /* bus info */ 1544 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); 1545 if (err) { 1546 dfwdev->status = FWDEVINVAL; 1547 return (-1); 1548 } 1549 binfo = (struct bus_info *)&csr[1]; 1550 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { 1551 dfwdev->status = FWDEVINVAL; 1552 return (-1); 1553 } 1554 1555 if (firewire_debug) 1556 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n" 1557 "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) " 1558 "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) " 1559 "generation(%d) link_spd(%d)\n", 1560 __func__, node, 1561 binfo->irmc, binfo->cmc, binfo->isc, 1562 binfo->bmc, binfo->pmc, binfo->cyc_clk_acc, 1563 binfo->max_rec, binfo->max_rom, 1564 binfo->generation, binfo->link_spd); 1565 1566 STAILQ_FOREACH(fwdev, &fc->devices, link) 1567 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) 1568 break; 1569 if (fwdev == NULL) { 1570 /* new device */ 1571 fwdev = malloc(sizeof(struct fw_device), M_FW, 1572 M_NOWAIT | M_ZERO); 1573 if (fwdev == NULL) { 1574 device_printf(fc->bdev, "%s: node%d: no memory\n", 1575 __func__, node); 1576 return (-1); 1577 } 1578 fwdev->fc = fc; 1579 fwdev->eui = binfo->eui64; 1580 fwdev->dst = dfwdev->dst; 1581 fwdev->maxrec = dfwdev->maxrec; 1582 fwdev->status = dfwdev->status; 1583 1584 /* 1585 * Pre-1394a-2000 didn't have link_spd in 1586 * the Bus Info block, so try and use the 1587 * speed map value. 1588 * 1394a-2000 compliant devices only use 1589 * the Bus Info Block link spd value, so 1590 * ignore the speed map altogether. SWB 1591 */ 1592 if (binfo->link_spd == FWSPD_S100 /* 0 */) { 1593 device_printf(fc->bdev, "%s: " 1594 "Pre 1394a-2000 detected\n", __func__); 1595 fwdev->speed = fc->speed_map->speed[fc->nodeid][node]; 1596 } else 1597 fwdev->speed = binfo->link_spd; 1598 /* 1599 * Test this speed with a read to the CSRROM. 1600 * If it fails, slow down the speed and retry. 1601 */ 1602 while (fwdev->speed > FWSPD_S100 /* 0 */) { 1603 err = fw_explore_read_quads(fwdev, CSRROMOFF, 1604 &speed_test, 1); 1605 if (err) { 1606 device_printf(fc->bdev, 1607 "%s: fwdev->speed(%s) decremented due to negotiation\n", 1608 __func__, linkspeed[fwdev->speed]); 1609 fwdev->speed--; 1610 } else 1611 break; 1612 1613 } 1614 1615 /* 1616 * If the fwdev is not found in the 1617 * fc->devices TAILQ, then we will add it. 1618 */ 1619 pfwdev = NULL; 1620 STAILQ_FOREACH(tfwdev, &fc->devices, link) { 1621 if (tfwdev->eui.hi > fwdev->eui.hi || 1622 (tfwdev->eui.hi == fwdev->eui.hi && 1623 tfwdev->eui.lo > fwdev->eui.lo)) 1624 break; 1625 pfwdev = tfwdev; 1626 } 1627 if (pfwdev == NULL) 1628 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link); 1629 else 1630 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link); 1631 } else { 1632 fwdev->dst = node; 1633 fwdev->status = FWDEVINIT; 1634 /* unchanged ? */ 1635 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) { 1636 if (firewire_debug) 1637 device_printf(fc->dev, 1638 "node%d: crom unchanged\n", node); 1639 return (0); 1640 } 1641 } 1642 1643 bzero(&fwdev->csrrom[0], CROMSIZE); 1644 1645 /* copy first quad and bus info block */ 1646 bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5); 1647 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; 1648 1649 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ 1650 1651 if (err) { 1652 if (firewire_debug) 1653 device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n", 1654 __func__, err); 1655 fwdev->status = FWDEVINVAL; 1656 fwdev->csrrom[0] = 0; 1657 } 1658 return (err); 1659 1660 } 1661 1662 /* 1663 * Find the self_id packet for a node, ignoring sequels. 1664 */ 1665 static union fw_self_id * 1666 fw_find_self_id(struct firewire_comm *fc, int node) 1667 { 1668 uint32_t i; 1669 union fw_self_id *s; 1670 1671 for (i = 0; i < fc->topology_map->self_id_count; i++) { 1672 s = &fc->topology_map->self_id[i]; 1673 if (s->p0.sequel) 1674 continue; 1675 if (s->p0.phy_id == node) 1676 return s; 1677 } 1678 return 0; 1679 } 1680 1681 static void 1682 fw_explore(struct firewire_comm *fc) 1683 { 1684 int node, err, s, i, todo, todo2, trys; 1685 char nodes[63]; 1686 struct fw_device dfwdev; 1687 union fw_self_id *fwsid; 1688 1689 todo = 0; 1690 /* setup dummy fwdev */ 1691 dfwdev.fc = fc; 1692 dfwdev.speed = 0; 1693 dfwdev.maxrec = 8; /* 512 */ 1694 dfwdev.status = FWDEVINIT; 1695 1696 for (node = 0; node <= fc->max_node; node++) { 1697 /* We don't probe myself and linkdown nodes */ 1698 if (node == fc->nodeid) { 1699 if (firewire_debug) 1700 device_printf(fc->bdev, "%s:" 1701 "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n", 1702 __func__, node, fc->nodeid, fc->max_node); 1703 continue; 1704 } else if (firewire_debug) { 1705 device_printf(fc->bdev, "%s:" 1706 "node(%d) fc->max_node(%d) found\n", 1707 __func__, node, fc->max_node); 1708 } 1709 fwsid = fw_find_self_id(fc, node); 1710 if (!fwsid || !fwsid->p0.link_active) { 1711 if (firewire_debug) 1712 device_printf(fc->bdev, 1713 "%s: node%d: link down\n", 1714 __func__, node); 1715 continue; 1716 } 1717 nodes[todo++] = node; 1718 } 1719 1720 s = splfw(); 1721 for (trys = 0; todo > 0 && trys < 3; trys++) { 1722 todo2 = 0; 1723 for (i = 0; i < todo; i++) { 1724 dfwdev.dst = nodes[i]; 1725 err = fw_explore_node(&dfwdev); 1726 if (err) 1727 nodes[todo2++] = nodes[i]; 1728 if (firewire_debug) 1729 device_printf(fc->bdev, 1730 "%s: node %d, err = %d\n", 1731 __func__, node, err); 1732 } 1733 todo = todo2; 1734 } 1735 splx(s); 1736 } 1737 1738 static void 1739 fw_bus_probe_thread(void *arg) 1740 { 1741 struct firewire_comm *fc; 1742 1743 fc = arg; 1744 1745 mtx_lock(&fc->wait_lock); 1746 while (fc->status != FWBUSDETACH) { 1747 if (fc->status == FWBUSEXPLORE) { 1748 mtx_unlock(&fc->wait_lock); 1749 fw_explore(fc); 1750 fc->status = FWBUSEXPDONE; 1751 if (firewire_debug) 1752 printf("bus_explore done\n"); 1753 fw_attach_dev(fc); 1754 mtx_lock(&fc->wait_lock); 1755 } 1756 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0); 1757 } 1758 mtx_unlock(&fc->wait_lock); 1759 kproc_exit(0); 1760 } 1761 1762 /* 1763 * To attach sub-devices layer onto IEEE1394 bus. 1764 */ 1765 static void 1766 fw_attach_dev(struct firewire_comm *fc) 1767 { 1768 struct fw_device *fwdev, *next; 1769 int i, err; 1770 device_t *devlistp; 1771 int devcnt; 1772 struct firewire_dev_comm *fdc; 1773 1774 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { 1775 next = STAILQ_NEXT(fwdev, link); 1776 if (fwdev->status == FWDEVINIT) { 1777 fwdev->status = FWDEVATTACHED; 1778 } else if (fwdev->status == FWDEVINVAL) { 1779 fwdev->rcnt++; 1780 if (firewire_debug) 1781 device_printf(fc->bdev, "%s:" 1782 "fwdev->rcnt(%d), hold_count(%d)\n", 1783 __func__, fwdev->rcnt, hold_count); 1784 if (fwdev->rcnt > hold_count) { 1785 /* 1786 * Remove devices which have not been seen 1787 * for a while. 1788 */ 1789 STAILQ_REMOVE(&fc->devices, fwdev, fw_device, 1790 link); 1791 free(fwdev, M_FW); 1792 } 1793 } 1794 } 1795 1796 err = device_get_children(fc->bdev, &devlistp, &devcnt); 1797 if (err == 0) { 1798 for (i = 0; i < devcnt; i++) { 1799 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 1800 fdc = device_get_softc(devlistp[i]); 1801 if (fdc->post_explore != NULL) 1802 fdc->post_explore(fdc); 1803 } 1804 } 1805 free(devlistp, M_TEMP); 1806 } 1807 1808 return; 1809 } 1810 1811 /* 1812 * To allocate unique transaction label. 1813 */ 1814 static int 1815 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer) 1816 { 1817 u_int dst, new_tlabel; 1818 struct fw_xfer *txfer; 1819 int s; 1820 1821 dst = xfer->send.hdr.mode.hdr.dst & 0x3f; 1822 s = splfw(); 1823 mtx_lock(&fc->tlabel_lock); 1824 new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f; 1825 STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel) 1826 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst) 1827 break; 1828 if (txfer == NULL) { 1829 fc->last_tlabel[dst] = new_tlabel; 1830 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel); 1831 mtx_unlock(&fc->tlabel_lock); 1832 splx(s); 1833 xfer->tl = new_tlabel; 1834 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2; 1835 if (firewire_debug > 1) 1836 printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel); 1837 return (new_tlabel); 1838 } 1839 mtx_unlock(&fc->tlabel_lock); 1840 splx(s); 1841 1842 if (firewire_debug > 1) 1843 printf("fw_get_tlabel: no free tlabel\n"); 1844 return (-1); 1845 } 1846 1847 static void 1848 fw_rcv_copy(struct fw_rcv_buf *rb) 1849 { 1850 struct fw_pkt *pkt; 1851 u_char *p; 1852 struct tcode_info *tinfo; 1853 u_int res, i, len, plen; 1854 1855 rb->xfer->recv.spd = rb->spd; 1856 1857 pkt = (struct fw_pkt *)rb->vec->iov_base; 1858 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode]; 1859 1860 /* Copy header */ 1861 p = (u_char *)&rb->xfer->recv.hdr; 1862 bcopy(rb->vec->iov_base, p, tinfo->hdr_len); 1863 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len; 1864 rb->vec->iov_len -= tinfo->hdr_len; 1865 1866 /* Copy payload */ 1867 p = (u_char *)rb->xfer->recv.payload; 1868 res = rb->xfer->recv.pay_len; 1869 1870 /* special handling for RRESQ */ 1871 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ && 1872 p != NULL && res >= sizeof(uint32_t)) { 1873 *(uint32_t *)p = pkt->mode.rresq.data; 1874 rb->xfer->recv.pay_len = sizeof(uint32_t); 1875 return; 1876 } 1877 1878 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0) 1879 return; 1880 1881 plen = pkt->mode.rresb.len; 1882 1883 for (i = 0; i < rb->nvec; i++, rb->vec++) { 1884 len = MIN(rb->vec->iov_len, plen); 1885 if (res < len) { 1886 device_printf(rb->fc->bdev, "%s:" 1887 " rcv buffer(%d) is %d bytes short.\n", 1888 __func__, rb->xfer->recv.pay_len, len - res); 1889 len = res; 1890 } 1891 bcopy(rb->vec->iov_base, p, len); 1892 p += len; 1893 res -= len; 1894 plen -= len; 1895 if (res == 0 || plen == 0) 1896 break; 1897 } 1898 rb->xfer->recv.pay_len -= res; 1899 } 1900 1901 /* 1902 * Generic packet receiving process. 1903 */ 1904 void 1905 fw_rcv(struct fw_rcv_buf *rb) 1906 { 1907 struct fw_pkt *fp, *resfp; 1908 struct fw_bind *bind; 1909 int tcode; 1910 int oldstate; 1911 #if 0 1912 int i, len; 1913 { 1914 uint32_t *qld; 1915 int i; 1916 qld = (uint32_t *)buf; 1917 printf("spd %d len:%d\n", spd, len); 1918 for (i = 0; i <= len && i < 32; i+= 4) { 1919 printf("0x%08x ", ntohl(qld[i/4])); 1920 if ((i % 16) == 15) printf("\n"); 1921 } 1922 if ((i % 16) != 15) printf("\n"); 1923 } 1924 #endif 1925 fp = (struct fw_pkt *)rb->vec[0].iov_base; 1926 tcode = fp->mode.common.tcode; 1927 switch (tcode) { 1928 case FWTCODE_WRES: 1929 case FWTCODE_RRESQ: 1930 case FWTCODE_RRESB: 1931 case FWTCODE_LRES: 1932 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1933 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode); 1934 if (rb->xfer == NULL) { 1935 device_printf(rb->fc->bdev, "%s: unknown response " 1936 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n", 1937 __func__, 1938 tcode_str[tcode], tcode, 1939 fp->mode.hdr.src, 1940 fp->mode.hdr.tlrt >> 2, 1941 fp->mode.hdr.tlrt & 3, 1942 fp->mode.rresq.data); 1943 #if 0 1944 printf("try ad-hoc work around!!\n"); 1945 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1946 (fp->mode.hdr.tlrt >> 2)^3); 1947 if (rb->xfer == NULL) { 1948 printf("no use...\n"); 1949 return; 1950 } 1951 #else 1952 return; 1953 #endif 1954 } 1955 fw_rcv_copy(rb); 1956 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP) 1957 rb->xfer->resp = EIO; 1958 else 1959 rb->xfer->resp = 0; 1960 /* make sure the packet is drained in AT queue */ 1961 oldstate = rb->xfer->flag; 1962 rb->xfer->flag = FWXF_RCVD; 1963 switch (oldstate) { 1964 case FWXF_SENT: 1965 fw_xfer_done(rb->xfer); 1966 break; 1967 case FWXF_START: 1968 #if 0 1969 if (firewire_debug) 1970 printf("not sent yet tl=%x\n", rb->xfer->tl); 1971 #endif 1972 break; 1973 default: 1974 device_printf(rb->fc->bdev, "%s: " 1975 "unexpected flag 0x%02x\n", __func__, 1976 rb->xfer->flag); 1977 } 1978 return; 1979 case FWTCODE_WREQQ: 1980 case FWTCODE_WREQB: 1981 case FWTCODE_RREQQ: 1982 case FWTCODE_RREQB: 1983 case FWTCODE_LREQ: 1984 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi, 1985 fp->mode.rreqq.dest_lo); 1986 if (bind == NULL) { 1987 device_printf(rb->fc->bdev, "%s: " 1988 "Unknown service addr 0x%04x:0x%08x %s(%x)" 1989 " src=0x%x data=%x\n", 1990 __func__, 1991 fp->mode.wreqq.dest_hi, 1992 fp->mode.wreqq.dest_lo, 1993 tcode_str[tcode], tcode, 1994 fp->mode.hdr.src, 1995 ntohl(fp->mode.wreqq.data)); 1996 1997 if (rb->fc->status == FWBUSINIT) { 1998 device_printf(rb->fc->bdev, 1999 "%s: cannot respond(bus reset)!\n", 2000 __func__); 2001 return; 2002 } 2003 rb->xfer = fw_xfer_alloc(M_FWXFER); 2004 if (rb->xfer == NULL) { 2005 return; 2006 } 2007 rb->xfer->send.spd = rb->spd; 2008 rb->xfer->send.pay_len = 0; 2009 resfp = &rb->xfer->send.hdr; 2010 switch (tcode) { 2011 case FWTCODE_WREQQ: 2012 case FWTCODE_WREQB: 2013 resfp->mode.hdr.tcode = FWTCODE_WRES; 2014 break; 2015 case FWTCODE_RREQQ: 2016 resfp->mode.hdr.tcode = FWTCODE_RRESQ; 2017 break; 2018 case FWTCODE_RREQB: 2019 resfp->mode.hdr.tcode = FWTCODE_RRESB; 2020 break; 2021 case FWTCODE_LREQ: 2022 resfp->mode.hdr.tcode = FWTCODE_LRES; 2023 break; 2024 } 2025 resfp->mode.hdr.dst = fp->mode.hdr.src; 2026 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt; 2027 resfp->mode.hdr.pri = fp->mode.hdr.pri; 2028 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR; 2029 resfp->mode.rresb.extcode = 0; 2030 resfp->mode.rresb.len = 0; 2031 /* 2032 rb->xfer->hand = fw_xferwake; 2033 */ 2034 rb->xfer->hand = fw_xfer_free; 2035 if (fw_asyreq(rb->fc, -1, rb->xfer)) 2036 fw_xfer_free(rb->xfer); 2037 return; 2038 } 2039 #if 0 2040 len = 0; 2041 for (i = 0; i < rb->nvec; i++) 2042 len += rb->vec[i].iov_len; 2043 #endif 2044 rb->xfer = STAILQ_FIRST(&bind->xferlist); 2045 if (rb->xfer == NULL) { 2046 device_printf(rb->fc->bdev, "%s: " 2047 "Discard a packet for this bind.\n", __func__); 2048 return; 2049 } 2050 STAILQ_REMOVE_HEAD(&bind->xferlist, link); 2051 fw_rcv_copy(rb); 2052 rb->xfer->hand(rb->xfer); 2053 return; 2054 #if 0 /* shouldn't happen ?? or for GASP */ 2055 case FWTCODE_STREAM: 2056 { 2057 struct fw_xferq *xferq; 2058 2059 xferq = rb->fc->ir[sub]; 2060 #if 0 2061 printf("stream rcv dma %d len %d off %d spd %d\n", 2062 sub, len, off, spd); 2063 #endif 2064 if (xferq->queued >= xferq->maxq) { 2065 printf("receive queue is full\n"); 2066 return; 2067 } 2068 /* XXX get xfer from xfer queue, we don't need copy for 2069 per packet mode */ 2070 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */ 2071 vec[0].iov_len); 2072 if (rb->xfer == NULL) 2073 return; 2074 fw_rcv_copy(rb) 2075 s = splfw(); 2076 xferq->queued++; 2077 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link); 2078 splx(s); 2079 sc = device_get_softc(rb->fc->bdev); 2080 if (SEL_WAITING(&xferq->rsel)) 2081 selwakeuppri(&xferq->rsel, FWPRI); 2082 if (xferq->flag & FWXFERQ_WAKEUP) { 2083 xferq->flag &= ~FWXFERQ_WAKEUP; 2084 wakeup((caddr_t)xferq); 2085 } 2086 if (xferq->flag & FWXFERQ_HANDLER) { 2087 xferq->hand(xferq); 2088 } 2089 return; 2090 break; 2091 } 2092 #endif 2093 default: 2094 device_printf(rb->fc->bdev,"%s: unknown tcode %d\n", 2095 __func__, tcode); 2096 break; 2097 } 2098 } 2099 2100 /* 2101 * Post process for Bus Manager election process. 2102 */ 2103 static void 2104 fw_try_bmr_callback(struct fw_xfer *xfer) 2105 { 2106 struct firewire_comm *fc; 2107 int bmr; 2108 2109 if (xfer == NULL) 2110 return; 2111 fc = xfer->fc; 2112 if (xfer->resp != 0) 2113 goto error; 2114 if (xfer->recv.payload == NULL) 2115 goto error; 2116 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE) 2117 goto error; 2118 2119 bmr = ntohl(xfer->recv.payload[0]); 2120 if (bmr == 0x3f) 2121 bmr = fc->nodeid; 2122 2123 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f); 2124 fw_xfer_free_buf(xfer); 2125 fw_bmr(fc); 2126 return; 2127 2128 error: 2129 device_printf(fc->bdev, "bus manager election failed\n"); 2130 fw_xfer_free_buf(xfer); 2131 } 2132 2133 2134 /* 2135 * To candidate Bus Manager election process. 2136 */ 2137 static void 2138 fw_try_bmr(void *arg) 2139 { 2140 struct fw_xfer *xfer; 2141 struct firewire_comm *fc = arg; 2142 struct fw_pkt *fp; 2143 int err = 0; 2144 2145 xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4); 2146 if (xfer == NULL) 2147 return; 2148 xfer->send.spd = 0; 2149 fc->status = FWBUSMGRELECT; 2150 2151 fp = &xfer->send.hdr; 2152 fp->mode.lreq.dest_hi = 0xffff; 2153 fp->mode.lreq.tlrt = 0; 2154 fp->mode.lreq.tcode = FWTCODE_LREQ; 2155 fp->mode.lreq.pri = 0; 2156 fp->mode.lreq.src = 0; 2157 fp->mode.lreq.len = 8; 2158 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP; 2159 fp->mode.lreq.dst = FWLOCALBUS | fc->irm; 2160 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID; 2161 xfer->send.payload[0] = htonl(0x3f); 2162 xfer->send.payload[1] = htonl(fc->nodeid); 2163 xfer->hand = fw_try_bmr_callback; 2164 2165 err = fw_asyreq(fc, -1, xfer); 2166 if (err) { 2167 fw_xfer_free_buf(xfer); 2168 return; 2169 } 2170 return; 2171 } 2172 2173 #ifdef FW_VMACCESS 2174 /* 2175 * Software implementation for physical memory block access. 2176 * XXX:Too slow, useful for debug purpose only. 2177 */ 2178 static void 2179 fw_vmaccess(struct fw_xfer *xfer) 2180 { 2181 struct fw_pkt *rfp, *sfp = NULL; 2182 uint32_t *ld = (uint32_t *)xfer->recv.buf; 2183 2184 printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n", 2185 xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), 2186 ntohl(ld[3])); 2187 printf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]), 2188 ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7])); 2189 if (xfer->resp != 0) { 2190 fw_xfer_free(xfer); 2191 return; 2192 } 2193 if (xfer->recv.buf == NULL) { 2194 fw_xfer_free(xfer); 2195 return; 2196 } 2197 rfp = (struct fw_pkt *)xfer->recv.buf; 2198 switch (rfp->mode.hdr.tcode) { 2199 /* XXX need fix for 64bit arch */ 2200 case FWTCODE_WREQB: 2201 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2202 xfer->send.len = 12; 2203 sfp = (struct fw_pkt *)xfer->send.buf; 2204 bcopy(rfp->mode.wreqb.payload, 2205 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo),s 2206 ntohs(rfp->mode.wreqb.len)); 2207 sfp->mode.wres.tcode = FWTCODE_WRES; 2208 sfp->mode.wres.rtcode = 0; 2209 break; 2210 case FWTCODE_WREQQ: 2211 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2212 xfer->send.len = 12; 2213 sfp->mode.wres.tcode = FWTCODE_WRES; 2214 *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = 2215 rfp->mode.wreqq.data; 2216 sfp->mode.wres.rtcode = 0; 2217 break; 2218 case FWTCODE_RREQB: 2219 xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, 2220 M_FW, M_NOWAIT); 2221 xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len); 2222 sfp = (struct fw_pkt *)xfer->send.buf; 2223 bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo), 2224 sfp->mode.rresb.payload, 2225 ntohs(rfp->mode.rreqb.len)); 2226 sfp->mode.rresb.tcode = FWTCODE_RRESB; 2227 sfp->mode.rresb.len = rfp->mode.rreqb.len; 2228 sfp->mode.rresb.rtcode = 0; 2229 sfp->mode.rresb.extcode = 0; 2230 break; 2231 case FWTCODE_RREQQ: 2232 xfer->send.buf = malloc(16, M_FW, M_NOWAIT); 2233 xfer->send.len = 16; 2234 sfp = (struct fw_pkt *)xfer->send.buf; 2235 sfp->mode.rresq.data = 2236 *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo)); 2237 sfp->mode.wres.tcode = FWTCODE_RRESQ; 2238 sfp->mode.rresb.rtcode = 0; 2239 break; 2240 default: 2241 fw_xfer_free(xfer); 2242 return; 2243 } 2244 sfp->mode.hdr.dst = rfp->mode.hdr.src; 2245 xfer->dst = ntohs(rfp->mode.hdr.src); 2246 xfer->hand = fw_xfer_free; 2247 2248 sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt; 2249 sfp->mode.hdr.pri = 0; 2250 2251 fw_asyreq(xfer->fc, -1, xfer); 2252 /**/ 2253 return; 2254 } 2255 #endif 2256 2257 /* 2258 * CRC16 check-sum for IEEE1394 register blocks. 2259 */ 2260 uint16_t 2261 fw_crc16(uint32_t *ptr, uint32_t len) 2262 { 2263 uint32_t i, sum, crc = 0; 2264 int shift; 2265 len = (len + 3) & ~3; 2266 for (i = 0; i < len; i += 4) { 2267 for (shift = 28; shift >= 0; shift -= 4) { 2268 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf; 2269 crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum; 2270 } 2271 crc &= 0xffff; 2272 } 2273 return ((uint16_t) crc); 2274 } 2275 2276 /* 2277 * Find the root node, if it is not 2278 * Cycle Master Capable, then we should 2279 * override this and become the Cycle 2280 * Master 2281 */ 2282 static int 2283 fw_bmr(struct firewire_comm *fc) 2284 { 2285 struct fw_device fwdev; 2286 union fw_self_id *self_id; 2287 int cmstr; 2288 uint32_t quad; 2289 2290 /* Check to see if the current root node is cycle master capable */ 2291 self_id = fw_find_self_id(fc, fc->max_node); 2292 if (fc->max_node > 0) { 2293 /* XXX check cmc bit of businfo block rather than contender */ 2294 if (self_id->p0.link_active && self_id->p0.contender) 2295 cmstr = fc->max_node; 2296 else { 2297 device_printf(fc->bdev, 2298 "root node is not cycle master capable\n"); 2299 /* XXX shall we be the cycle master? */ 2300 cmstr = fc->nodeid; 2301 /* XXX need bus reset */ 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);
Cache object: ad3672babb0b56da63c090741b1442ae
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