firewire.c revision 277506
1/*- 2 * Copyright (c) 2003 Hidetoshi Shimokawa 3 * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the acknowledgement as bellow: 16 * 17 * This product includes software developed by K. Kobayashi and H. Shimokawa 18 * 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 30 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD: head/sys/dev/firewire/firewire.c 277506 2015-01-21 19:59:09Z will $"); 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/types.h> 41 42#include <sys/jail.h> 43#include <sys/kernel.h> 44#include <sys/module.h> 45#include <sys/malloc.h> 46#include <sys/conf.h> 47#include <sys/sysctl.h> 48#include <sys/kthread.h> 49 50#include <sys/kdb.h> 51#include <sys/bus.h> /* used by smbus and newbus */ 52#include <machine/bus.h> 53 54#include <dev/firewire/firewire.h> 55#include <dev/firewire/firewirereg.h> 56#include <dev/firewire/fwmem.h> 57#include <dev/firewire/iec13213.h> 58#include <dev/firewire/iec68113.h> 59 60struct crom_src_buf { 61 struct crom_src src; 62 struct crom_chunk root; 63 struct crom_chunk vendor; 64 struct crom_chunk hw; 65}; 66 67int firewire_debug = 0, try_bmr = 1, hold_count = 0; 68SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0, 69 "FireWire driver debug flag"); 70SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem"); 71SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0, 72 "Try to be a bus manager"); 73SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0, 74 "Number of count of bus resets for removing lost device information"); 75 76MALLOC_DEFINE(M_FW, "firewire", "FireWire"); 77MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire"); 78 79#define FW_MAXASYRTY 4 80 81devclass_t firewire_devclass; 82 83static void firewire_identify(driver_t *, device_t); 84static int firewire_probe(device_t); 85static int firewire_attach(device_t); 86static int firewire_detach(device_t); 87static int firewire_resume(device_t); 88static void firewire_xfer_timeout(void *, int); 89static device_t firewire_add_child(device_t, u_int, const char *, int); 90static void fw_try_bmr(void *); 91static void fw_try_bmr_callback(struct fw_xfer *); 92static void fw_asystart(struct fw_xfer *); 93static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *); 94static void fw_bus_probe(void *); 95static void fw_attach_dev(struct firewire_comm *); 96static void fw_bus_probe_thread(void *); 97#ifdef FW_VMACCESS 98static void fw_vmaccess (struct fw_xfer *); 99#endif 100static int fw_bmr (struct firewire_comm *); 101static void fw_dump_hdr(struct fw_pkt *, char *); 102 103static device_method_t firewire_methods[] = { 104 /* Device interface */ 105 DEVMETHOD(device_identify, firewire_identify), 106 DEVMETHOD(device_probe, firewire_probe), 107 DEVMETHOD(device_attach, firewire_attach), 108 DEVMETHOD(device_detach, firewire_detach), 109 DEVMETHOD(device_suspend, bus_generic_suspend), 110 DEVMETHOD(device_resume, firewire_resume), 111 DEVMETHOD(device_shutdown, bus_generic_shutdown), 112 113 /* Bus interface */ 114 DEVMETHOD(bus_add_child, firewire_add_child), 115 116 DEVMETHOD_END 117}; 118 119char *linkspeed[] = { 120 "S100", "S200", "S400", "S800", 121 "S1600", "S3200", "undef", "undef" 122}; 123 124static char *tcode_str[] = { 125 "WREQQ", "WREQB", "WRES", "undef", 126 "RREQQ", "RREQB", "RRESQ", "RRESB", 127 "CYCS", "LREQ", "STREAM", "LRES", 128 "undef", "undef", "PHY", "undef" 129}; 130 131/* IEEE-1394a Table C-2 Gap count as a function of hops*/ 132#define MAX_GAPHOP 15 133u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18, 134 21, 24, 26, 29, 32, 35, 37, 40}; 135 136static driver_t firewire_driver = { 137 "firewire", 138 firewire_methods, 139 sizeof(struct firewire_softc), 140}; 141 142/* 143 * Lookup fwdev by node id. 144 */ 145struct fw_device * 146fw_noderesolve_nodeid(struct firewire_comm *fc, int dst) 147{ 148 struct fw_device *fwdev; 149 int s; 150 151 s = splfw(); 152 STAILQ_FOREACH(fwdev, &fc->devices, link) 153 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL) 154 break; 155 splx(s); 156 157 return fwdev; 158} 159 160/* 161 * Lookup fwdev by EUI64. 162 */ 163struct fw_device * 164fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui) 165{ 166 struct fw_device *fwdev; 167 int s; 168 169 s = splfw(); 170 FW_GLOCK(fc); 171 STAILQ_FOREACH(fwdev, &fc->devices, link) 172 if (FW_EUI64_EQUAL(fwdev->eui, *eui)) 173 break; 174 FW_GUNLOCK(fc); 175 splx(s); 176 177 if (fwdev == NULL) 178 return NULL; 179 if (fwdev->status == FWDEVINVAL) 180 return NULL; 181 return fwdev; 182} 183 184/* 185 * Async. request procedure for userland application. 186 */ 187int 188fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer) 189{ 190 int err = 0; 191 struct fw_xferq *xferq; 192 int len; 193 struct fw_pkt *fp; 194 int tcode; 195 struct tcode_info *info; 196 197 if (xfer == NULL) 198 return EINVAL; 199 if (xfer->hand == NULL) { 200 printf("hand == NULL\n"); 201 return EINVAL; 202 } 203 fp = &xfer->send.hdr; 204 205 tcode = fp->mode.common.tcode & 0xf; 206 info = &fc->tcode[tcode]; 207 if (info->flag == 0) { 208 printf("invalid tcode=%x\n", tcode); 209 return EINVAL; 210 } 211 212 /* XXX allow bus explore packets only after bus rest */ 213 if ((fc->status < FWBUSEXPLORE) && 214 ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) || 215 (fp->mode.rreqq.dest_lo < 0xf0000000) || 216 (fp->mode.rreqq.dest_lo >= 0xf0001000))) { 217 xfer->resp = EAGAIN; 218 xfer->flag = FWXF_BUSY; 219 return (EAGAIN); 220 } 221 222 if (info->flag & FWTI_REQ) 223 xferq = fc->atq; 224 else 225 xferq = fc->ats; 226 len = info->hdr_len; 227 if (xfer->send.pay_len > MAXREC(fc->maxrec)) { 228 printf("send.pay_len > maxrec\n"); 229 return EINVAL; 230 } 231 if (info->flag & FWTI_BLOCK_STR) 232 len = fp->mode.stream.len; 233 else if (info->flag & FWTI_BLOCK_ASY) 234 len = fp->mode.rresb.len; 235 else 236 len = 0; 237 if (len != xfer->send.pay_len) { 238 printf("len(%d) != send.pay_len(%d) %s(%x)\n", 239 len, xfer->send.pay_len, tcode_str[tcode], tcode); 240 return EINVAL; 241 } 242 243 if (xferq->start == NULL) { 244 printf("xferq->start == NULL\n"); 245 return EINVAL; 246 } 247 if (!(xferq->queued < xferq->maxq)) { 248 device_printf(fc->bdev, "Discard a packet (queued=%d)\n", 249 xferq->queued); 250 return EAGAIN; 251 } 252 253 xfer->tl = -1; 254 if (info->flag & FWTI_TLABEL) { 255 if (fw_get_tlabel(fc, xfer) < 0) 256 return EAGAIN; 257 } 258 259 xfer->resp = 0; 260 xfer->fc = fc; 261 xfer->q = xferq; 262 263 fw_asystart(xfer); 264 return err; 265} 266 267/* 268 * Wakeup blocked process. 269 */ 270void 271fw_xferwake(struct fw_xfer *xfer) 272{ 273 struct mtx *lock = &xfer->fc->wait_lock; 274 275 mtx_lock(lock); 276 xfer->flag |= FWXF_WAKE; 277 mtx_unlock(lock); 278 279 wakeup(xfer); 280 return; 281} 282 283int 284fw_xferwait(struct fw_xfer *xfer) 285{ 286 struct mtx *lock = &xfer->fc->wait_lock; 287 int err = 0; 288 289 mtx_lock(lock); 290 while ((xfer->flag & FWXF_WAKE) == 0) 291 err = msleep(xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0); 292 mtx_unlock(lock); 293 294 return (err); 295} 296 297/* 298 * Async. request with given xfer structure. 299 */ 300static void 301fw_asystart(struct fw_xfer *xfer) 302{ 303 struct firewire_comm *fc = xfer->fc; 304 int s; 305 306 s = splfw(); 307 /* Protect from interrupt/timeout */ 308 FW_GLOCK(fc); 309 xfer->flag = FWXF_INQ; 310 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); 311#if 0 312 xfer->q->queued++; 313#endif 314 FW_GUNLOCK(fc); 315 splx(s); 316 /* XXX just queue for mbuf */ 317 if (xfer->mbuf == NULL) 318 xfer->q->start(fc); 319 return; 320} 321 322static void 323firewire_identify(driver_t *driver, device_t parent) 324{ 325 BUS_ADD_CHILD(parent, 0, "firewire", -1); 326} 327 328static int 329firewire_probe(device_t dev) 330{ 331 device_set_desc(dev, "IEEE1394(FireWire) bus"); 332 return (0); 333} 334 335static void 336firewire_xfer_timeout(void *arg, int pending) 337{ 338 struct firewire_comm *fc = (struct firewire_comm *)arg; 339 struct fw_xfer *xfer, *txfer; 340 struct timeval tv; 341 struct timeval split_timeout; 342 STAILQ_HEAD(, fw_xfer) xfer_timeout; 343 int i, s; 344 345 split_timeout.tv_sec = 0; 346 split_timeout.tv_usec = 200 * 1000; /* 200 msec */ 347 348 microtime(&tv); 349 timevalsub(&tv, &split_timeout); 350 STAILQ_INIT(&xfer_timeout); 351 352 s = splfw(); 353 mtx_lock(&fc->tlabel_lock); 354 for (i = 0; i < 0x40; i++) { 355 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 356 if ((xfer->flag & FWXF_SENT) == 0) 357 /* not sent yet */ 358 break; 359 if (timevalcmp(&xfer->tv, &tv, >)) 360 /* the rests are newer than this */ 361 break; 362 device_printf(fc->bdev, 363 "split transaction timeout: tl=0x%x flag=0x%02x\n", 364 i, xfer->flag); 365 fw_dump_hdr(&xfer->send.hdr, "send"); 366 xfer->resp = ETIMEDOUT; 367 xfer->tl = -1; 368 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 369 STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel); 370 } 371 } 372 mtx_unlock(&fc->tlabel_lock); 373 splx(s); 374 fc->timeout(fc); 375 376 STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer) 377 xfer->hand(xfer); 378} 379 380#define WATCHDOG_HZ 10 381static void 382firewire_watchdog(void *arg) 383{ 384 struct firewire_comm *fc; 385 static int watchdog_clock = 0; 386 387 fc = arg; 388 389 /* 390 * At boot stage, the device interrupt is disabled and 391 * We encounter a timeout easily. To avoid this, 392 * ignore clock interrupt for a while. 393 */ 394 if (watchdog_clock > WATCHDOG_HZ * 15) 395 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout); 396 else 397 watchdog_clock++; 398 399 callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ, 400 firewire_watchdog, fc); 401} 402 403/* 404 * The attach routine. 405 */ 406static int 407firewire_attach(device_t dev) 408{ 409 int unit; 410 struct firewire_softc *sc = device_get_softc(dev); 411 device_t pa = device_get_parent(dev); 412 struct firewire_comm *fc; 413 414 fc = device_get_softc(pa); 415 sc->fc = fc; 416 fc->status = FWBUSNOTREADY; 417 418 unit = device_get_unit(dev); 419 if (fc->nisodma > FWMAXNDMA) 420 fc->nisodma = FWMAXNDMA; 421 422 fwdev_makedev(sc); 423 424 fc->crom_src_buf = malloc(sizeof(struct crom_src_buf), 425 M_FW, M_NOWAIT | M_ZERO); 426 if (fc->crom_src_buf == NULL) { 427 device_printf(fc->dev, 428 "%s: unable to allocate crom src buffer\n", __func__); 429 return ENOMEM; 430 } 431 fc->topology_map = malloc(sizeof(struct fw_topology_map), 432 M_FW, M_NOWAIT | M_ZERO); 433 if (fc->topology_map == NULL) { 434 device_printf(fc->dev, "%s: unable to allocate topology map\n", 435 __func__); 436 free(fc->crom_src_buf, M_FW); 437 return ENOMEM; 438 } 439 fc->speed_map = malloc(sizeof(struct fw_speed_map), 440 M_FW, M_NOWAIT | M_ZERO); 441 if (fc->speed_map == NULL) { 442 device_printf(fc->dev, "%s: unable to allocate speed map\n", 443 __func__); 444 free(fc->crom_src_buf, M_FW); 445 free(fc->topology_map, M_FW); 446 return ENOMEM; 447 } 448 449 mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF); 450 mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF); 451 CALLOUT_INIT(&fc->timeout_callout); 452 CALLOUT_INIT(&fc->bmr_callout); 453 CALLOUT_INIT(&fc->busprobe_callout); 454 TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, fc); 455 456 callout_reset(&sc->fc->timeout_callout, hz, 457 firewire_watchdog, sc->fc); 458 459 /* create thread */ 460 kproc_create(fw_bus_probe_thread, fc, &fc->probe_thread, 461 0, 0, "fw%d_probe", unit); 462 463 /* Locate our children */ 464 bus_generic_probe(dev); 465 466 /* launch attachement of the added children */ 467 bus_generic_attach(dev); 468 469 /* bus_reset */ 470 FW_GLOCK(fc); 471 fw_busreset(fc, FWBUSNOTREADY); 472 FW_GUNLOCK(fc); 473 fc->ibr(fc); 474 475 return 0; 476} 477 478/* 479 * Attach it as child. 480 */ 481static device_t 482firewire_add_child(device_t dev, u_int order, const char *name, int unit) 483{ 484 device_t child; 485 struct firewire_softc *sc; 486 487 sc = device_get_softc(dev); 488 child = device_add_child(dev, name, unit); 489 if (child) { 490 device_set_ivars(child, sc->fc); 491 device_probe_and_attach(child); 492 } 493 494 return child; 495} 496 497static int 498firewire_resume(device_t dev) 499{ 500 struct firewire_softc *sc; 501 502 sc = device_get_softc(dev); 503 sc->fc->status = FWBUSNOTREADY; 504 505 bus_generic_resume(dev); 506 507 return (0); 508} 509 510/* 511 * Detach it. 512 */ 513static int 514firewire_detach(device_t dev) 515{ 516 struct firewire_softc *sc; 517 struct firewire_comm *fc; 518 struct fw_device *fwdev, *fwdev_next; 519 int err; 520 521 sc = device_get_softc(dev); 522 fc = sc->fc; 523 mtx_lock(&fc->wait_lock); 524 fc->status = FWBUSDETACH; 525 wakeup(fc); 526 if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60)) 527 printf("firewire probe thread didn't die\n"); 528 mtx_unlock(&fc->wait_lock); 529 530 if (fc->arq != 0 && fc->arq->maxq > 0) 531 fw_drain_txq(fc); 532 533 if ((err = fwdev_destroydev(sc)) != 0) 534 return err; 535 536 if ((err = bus_generic_detach(dev)) != 0) 537 return err; 538 539 callout_stop(&fc->timeout_callout); 540 callout_stop(&fc->bmr_callout); 541 callout_stop(&fc->busprobe_callout); 542 543 /* XXX xfer_free and untimeout on all xfers */ 544 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; 545 fwdev = fwdev_next) { 546 fwdev_next = STAILQ_NEXT(fwdev, link); 547 free(fwdev, M_FW); 548 } 549 free(fc->topology_map, M_FW); 550 free(fc->speed_map, M_FW); 551 free(fc->crom_src_buf, M_FW); 552 553 mtx_destroy(&fc->tlabel_lock); 554 mtx_destroy(&fc->wait_lock); 555 return (0); 556} 557 558static void 559fw_xferq_drain(struct fw_xferq *xferq) 560{ 561 struct fw_xfer *xfer; 562 563 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) { 564 STAILQ_REMOVE_HEAD(&xferq->q, link); 565#if 0 566 xferq->queued--; 567#endif 568 xfer->resp = EAGAIN; 569 xfer->flag = FWXF_SENTERR; 570 fw_xfer_done(xfer); 571 } 572} 573 574void 575fw_drain_txq(struct firewire_comm *fc) 576{ 577 struct fw_xfer *xfer, *txfer; 578 STAILQ_HEAD(, fw_xfer) xfer_drain; 579 int i; 580 581 STAILQ_INIT(&xfer_drain); 582 583 FW_GLOCK(fc); 584 fw_xferq_drain(fc->atq); 585 fw_xferq_drain(fc->ats); 586 for (i = 0; i < fc->nisodma; i++) 587 fw_xferq_drain(fc->it[i]); 588 FW_GUNLOCK(fc); 589 590 mtx_lock(&fc->tlabel_lock); 591 for (i = 0; i < 0x40; i++) 592 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 593 if (firewire_debug) 594 printf("tl=%d flag=%d\n", i, xfer->flag); 595 xfer->tl = -1; 596 xfer->resp = EAGAIN; 597 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 598 STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel); 599 } 600 mtx_unlock(&fc->tlabel_lock); 601 602 STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer) 603 xfer->hand(xfer); 604} 605 606static void 607fw_reset_csr(struct firewire_comm *fc) 608{ 609 int i; 610 611 CSRARC(fc, STATE_CLEAR) 612 = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 613 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 614 CSRARC(fc, NODE_IDS) = 0x3f; 615 616 CSRARC(fc, TOPO_MAP + 8) = 0; 617 fc->irm = -1; 618 619 fc->max_node = -1; 620 621 for (i = 2; i < 0x100 / 4 - 2; i++) { 622 CSRARC(fc, SPED_MAP + i * 4) = 0; 623 } 624 CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 625 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 626 CSRARC(fc, RESET_START) = 0; 627 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0; 628 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19; 629 CSRARC(fc, CYCLE_TIME) = 0x0; 630 CSRARC(fc, BUS_TIME) = 0x0; 631 CSRARC(fc, BUS_MGR_ID) = 0x3f; 632 CSRARC(fc, BANDWIDTH_AV) = 4915; 633 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; 634 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; 635 CSRARC(fc, IP_CHANNELS) = (1U << 31); 636 637 CSRARC(fc, CONF_ROM) = 0x04 << 24; 638 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */ 639 CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 | 640 1 << 28 | 0xff << 16 | 0x09 << 8; 641 CSRARC(fc, CONF_ROM + 0xc) = 0; 642 643 /* DV depend CSRs see blue book */ 644 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON; 645 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON; 646 647 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14); 648 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 649} 650 651static void 652fw_init_crom(struct firewire_comm *fc) 653{ 654 struct crom_src *src; 655 656 src = &fc->crom_src_buf->src; 657 bzero(src, sizeof(struct crom_src)); 658 659 /* BUS info sample */ 660 src->hdr.info_len = 4; 661 662 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394; 663 664 src->businfo.irmc = 1; 665 src->businfo.cmc = 1; 666 src->businfo.isc = 1; 667 src->businfo.bmc = 1; 668 src->businfo.pmc = 0; 669 src->businfo.cyc_clk_acc = 100; 670 src->businfo.max_rec = fc->maxrec; 671 src->businfo.max_rom = MAXROM_4; 672#define FW_GENERATION_CHANGEABLE 2 673 src->businfo.generation = FW_GENERATION_CHANGEABLE; 674 src->businfo.link_spd = fc->speed; 675 676 src->businfo.eui64.hi = fc->eui.hi; 677 src->businfo.eui64.lo = fc->eui.lo; 678 679 STAILQ_INIT(&src->chunk_list); 680 681 fc->crom_src = src; 682 fc->crom_root = &fc->crom_src_buf->root; 683} 684 685static void 686fw_reset_crom(struct firewire_comm *fc) 687{ 688 struct crom_src_buf *buf; 689 struct crom_src *src; 690 struct crom_chunk *root; 691 692 buf = fc->crom_src_buf; 693 src = fc->crom_src; 694 root = fc->crom_root; 695 696 STAILQ_INIT(&src->chunk_list); 697 698 bzero(root, sizeof(struct crom_chunk)); 699 crom_add_chunk(src, NULL, root, 0); 700 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */ 701 /* private company_id */ 702 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); 703 crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project"); 704 crom_add_entry(root, CSRKEY_HW, __FreeBSD_version); 705 mtx_lock(&prison0.pr_mtx); 706 crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname); 707 mtx_unlock(&prison0.pr_mtx); 708} 709 710/* 711 * Called after bus reset. 712 */ 713void 714fw_busreset(struct firewire_comm *fc, uint32_t new_status) 715{ 716 struct firewire_dev_comm *fdc; 717 struct crom_src *src; 718 device_t *devlistp; 719 uint32_t *newrom; 720 int i, devcnt; 721 722 FW_GLOCK_ASSERT(fc); 723 if (fc->status == FWBUSMGRELECT) 724 callout_stop(&fc->bmr_callout); 725 726 fc->status = new_status; 727 fw_reset_csr(fc); 728 729 if (fc->status == FWBUSNOTREADY) 730 fw_init_crom(fc); 731 732 fw_reset_crom(fc); 733 734 if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) { 735 for (i = 0; i < devcnt; i++) 736 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 737 fdc = device_get_softc(devlistp[i]); 738 if (fdc->post_busreset != NULL) 739 fdc->post_busreset(fdc); 740 } 741 free(devlistp, M_TEMP); 742 } 743 744 src = &fc->crom_src_buf->src; 745 /* 746 * If the old config rom needs to be overwritten, 747 * bump the businfo.generation indicator to 748 * indicate that we need to be reprobed 749 * See 1394a-2000 8.3.2.5.4 for more details. 750 * generation starts at 2 and rolls over at 0xF 751 * back to 2. 752 * 753 * A generation of 0 indicates a device 754 * that is not 1394a-2000 compliant. 755 * A generation of 1 indicates a device that 756 * does not change it's Bus Info Block or 757 * Configuration ROM. 758 */ 759#define FW_MAX_GENERATION 0xF 760 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); 761 src = &fc->crom_src_buf->src; 762 crom_load(src, newrom, CROMSIZE); 763 if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) { 764 if (src->businfo.generation++ > FW_MAX_GENERATION) 765 src->businfo.generation = FW_GENERATION_CHANGEABLE; 766 bcopy(newrom, fc->config_rom, CROMSIZE); 767 } 768 free(newrom, M_FW); 769} 770 771/* Call once after reboot */ 772void 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 */ 883struct fw_bind * 884fw_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 */ 903int 904fw_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 */ 935int 936fw_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); 956found: 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 971int 972fw_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 993void 994fw_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 */ 1007static void 1008fw_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 */ 1021static void 1022fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer) 1023{ 1024 struct fw_xfer *txfer; 1025 int s; 1026 1027 s = splfw(); 1028 mtx_lock(&fc->tlabel_lock); 1029 if (xfer->tl < 0) { 1030 mtx_unlock(&fc->tlabel_lock); 1031 return; 1032 } 1033 /* make sure the label is allocated */ 1034 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) 1035 if (txfer == xfer) 1036 break; 1037 if (txfer == NULL) { 1038 printf("%s: the xfer is not in the queue " 1039 "(tlabel=%d, flag=0x%x)\n", 1040 __FUNCTION__, xfer->tl, xfer->flag); 1041 fw_dump_hdr(&xfer->send.hdr, "send"); 1042 fw_dump_hdr(&xfer->recv.hdr, "recv"); 1043 kdb_backtrace(); 1044 mtx_unlock(&fc->tlabel_lock); 1045 splx(s); 1046 return; 1047 } 1048 1049 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); 1050 xfer->tl = -1; 1051 mtx_unlock(&fc->tlabel_lock); 1052 splx(s); 1053 return; 1054} 1055 1056/* 1057 * To obtain XFER structure by transaction label. 1058 */ 1059static struct fw_xfer * 1060fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode) 1061{ 1062 struct fw_xfer *xfer; 1063 int s = splfw(); 1064 int req; 1065 1066 mtx_lock(&fc->tlabel_lock); 1067 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) 1068 if (xfer->send.hdr.mode.hdr.dst == node) { 1069 mtx_unlock(&fc->tlabel_lock); 1070 splx(s); 1071 KASSERT(xfer->tl == tlabel, 1072 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel)); 1073 /* extra sanity check */ 1074 req = xfer->send.hdr.mode.hdr.tcode; 1075 if (xfer->fc->tcode[req].valid_res != tcode) { 1076 printf("%s: invalid response tcode " 1077 "(0x%x for 0x%x)\n", __FUNCTION__, 1078 tcode, req); 1079 return (NULL); 1080 } 1081 1082 if (firewire_debug > 2) 1083 printf("fw_tl2xfer: found tl=%d\n", tlabel); 1084 return (xfer); 1085 } 1086 mtx_unlock(&fc->tlabel_lock); 1087 if (firewire_debug > 1) 1088 printf("fw_tl2xfer: not found tl=%d\n", tlabel); 1089 splx(s); 1090 return (NULL); 1091} 1092 1093/* 1094 * To allocate IEEE1394 XFER structure. 1095 */ 1096struct fw_xfer * 1097fw_xfer_alloc(struct malloc_type *type) 1098{ 1099 struct fw_xfer *xfer; 1100 1101 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO); 1102 if (xfer == NULL) 1103 return xfer; 1104 1105 xfer->malloc = type; 1106 1107 return xfer; 1108} 1109 1110struct fw_xfer * 1111fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len) 1112{ 1113 struct fw_xfer *xfer; 1114 1115 xfer = fw_xfer_alloc(type); 1116 if (xfer == NULL) 1117 return (NULL); 1118 xfer->send.pay_len = send_len; 1119 xfer->recv.pay_len = recv_len; 1120 if (send_len > 0) { 1121 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO); 1122 if (xfer->send.payload == NULL) { 1123 fw_xfer_free(xfer); 1124 return (NULL); 1125 } 1126 } 1127 if (recv_len > 0) { 1128 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT); 1129 if (xfer->recv.payload == NULL) { 1130 if (xfer->send.payload != NULL) 1131 free(xfer->send.payload, type); 1132 fw_xfer_free(xfer); 1133 return (NULL); 1134 } 1135 } 1136 return (xfer); 1137} 1138 1139/* 1140 * IEEE1394 XFER post process. 1141 */ 1142void 1143fw_xfer_done(struct fw_xfer *xfer) 1144{ 1145 if (xfer->hand == NULL) { 1146 printf("hand == NULL\n"); 1147 return; 1148 } 1149 1150 if (xfer->fc == NULL) 1151 panic("fw_xfer_done: why xfer->fc is NULL?"); 1152 1153 fw_tl_free(xfer->fc, xfer); 1154 xfer->hand(xfer); 1155} 1156 1157void 1158fw_xfer_unload(struct fw_xfer *xfer) 1159{ 1160 int s; 1161 1162 if (xfer == NULL) 1163 return; 1164 if (xfer->flag & FWXF_INQ) { 1165 printf("fw_xfer_free FWXF_INQ\n"); 1166 s = splfw(); 1167 FW_GLOCK(xfer->fc); 1168 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); 1169 xfer->flag &= ~FWXF_INQ; 1170#if 0 1171 xfer->q->queued--; 1172#endif 1173 FW_GUNLOCK(xfer->fc); 1174 splx(s); 1175 } 1176 if (xfer->fc != NULL) { 1177 /* 1178 * Ensure that any tlabel owner can't access this 1179 * xfer after it's freed. 1180 */ 1181 fw_tl_free(xfer->fc, xfer); 1182#if 1 1183 if (xfer->flag & FWXF_START) 1184 /* 1185 * This could happen if: 1186 * 1. We call fwohci_arcv() before fwohci_txd(). 1187 * 2. firewire_watch() is called. 1188 */ 1189 printf("fw_xfer_free FWXF_START\n"); 1190#endif 1191 } 1192 xfer->flag = FWXF_INIT; 1193 xfer->resp = 0; 1194} 1195 1196/* 1197 * To free IEEE1394 XFER structure. 1198 */ 1199void 1200fw_xfer_free_buf(struct fw_xfer *xfer) 1201{ 1202 if (xfer == NULL) { 1203 printf("%s: xfer == NULL\n", __func__); 1204 return; 1205 } 1206 fw_xfer_unload(xfer); 1207 if (xfer->send.payload != NULL) 1208 free(xfer->send.payload, xfer->malloc); 1209 if (xfer->recv.payload != NULL) 1210 free(xfer->recv.payload, xfer->malloc); 1211 free(xfer, xfer->malloc); 1212} 1213 1214void 1215fw_xfer_free(struct fw_xfer *xfer) 1216{ 1217 if (xfer == NULL) { 1218 printf("%s: xfer == NULL\n", __func__); 1219 return; 1220 } 1221 fw_xfer_unload(xfer); 1222 free(xfer, xfer->malloc); 1223} 1224 1225void 1226fw_asy_callback_free(struct fw_xfer *xfer) 1227{ 1228#if 0 1229 printf("asyreq done flag=0x%02x resp=%d\n", 1230 xfer->flag, xfer->resp); 1231#endif 1232 fw_xfer_free(xfer); 1233} 1234 1235/* 1236 * To configure PHY. 1237 */ 1238static void 1239fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count) 1240{ 1241 struct fw_xfer *xfer; 1242 struct fw_pkt *fp; 1243 1244 fc->status = FWBUSPHYCONF; 1245 1246 xfer = fw_xfer_alloc(M_FWXFER); 1247 if (xfer == NULL) 1248 return; 1249 xfer->fc = fc; 1250 xfer->hand = fw_asy_callback_free; 1251 1252 fp = &xfer->send.hdr; 1253 fp->mode.ld[1] = 0; 1254 if (root_node >= 0) 1255 fp->mode.ld[1] |= (1 << 23) | (root_node & 0x3f) << 24; 1256 if (gap_count >= 0) 1257 fp->mode.ld[1] |= (1 << 22) | (gap_count & 0x3f) << 16; 1258 fp->mode.ld[2] = ~fp->mode.ld[1]; 1259/* XXX Dangerous, how to pass PHY packet to device driver */ 1260 fp->mode.common.tcode |= FWTCODE_PHY; 1261 1262 if (firewire_debug) 1263 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n", 1264 __func__, root_node, gap_count); 1265 fw_asyreq(fc, -1, xfer); 1266} 1267 1268/* 1269 * Dump self ID. 1270 */ 1271static void 1272fw_print_sid(uint32_t sid) 1273{ 1274 union fw_self_id *s; 1275 s = (union fw_self_id *) &sid; 1276 if (s->p0.sequel) { 1277 if (s->p1.sequence_num == FW_SELF_ID_PAGE0) { 1278 printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d" 1279 "p8:%d p9:%d p10:%d\n", 1280 s->p1.phy_id, s->p1.port3, s->p1.port4, 1281 s->p1.port5, s->p1.port6, s->p1.port7, 1282 s->p1.port8, s->p1.port9, s->p1.port10); 1283 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) { 1284 printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n", 1285 s->p2.phy_id, s->p2.port11, s->p2.port12, 1286 s->p2.port13, s->p2.port14, s->p2.port15); 1287 } else { 1288 printf("node:%d Unknown Self ID Page number %d\n", 1289 s->p1.phy_id, s->p1.sequence_num); 1290 } 1291 } else { 1292 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d" 1293 " p0:%d p1:%d p2:%d i:%d m:%d\n", 1294 s->p0.phy_id, s->p0.link_active, s->p0.gap_count, 1295 s->p0.phy_speed, s->p0.contender, 1296 s->p0.power_class, s->p0.port0, s->p0.port1, 1297 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets); 1298 } 1299} 1300 1301/* 1302 * To receive self ID. 1303 */ 1304void fw_sidrcv(struct firewire_comm *fc, uint32_t *sid, u_int len) 1305{ 1306 uint32_t *p; 1307 union fw_self_id *self_id; 1308 u_int i, j, node, c_port = 0, i_branch = 0; 1309 1310 fc->sid_cnt = len / (sizeof(uint32_t) * 2); 1311 fc->max_node = fc->nodeid & 0x3f; 1312 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16; 1313 fc->status = FWBUSCYMELECT; 1314 fc->topology_map->crc_len = 2; 1315 fc->topology_map->generation++; 1316 fc->topology_map->self_id_count = 0; 1317 fc->topology_map->node_count= 0; 1318 fc->speed_map->generation++; 1319 fc->speed_map->crc_len = 1 + (64 * 64 + 3) / 4; 1320 self_id = &fc->topology_map->self_id[0]; 1321 for (i = 0; i < fc->sid_cnt; i++) { 1322 if (sid[1] != ~sid[0]) { 1323 device_printf(fc->bdev, 1324 "%s: ERROR invalid self-id packet\n", __func__); 1325 sid += 2; 1326 continue; 1327 } 1328 *self_id = *((union fw_self_id *)sid); 1329 fc->topology_map->crc_len++; 1330 if (self_id->p0.sequel == 0) { 1331 fc->topology_map->node_count++; 1332 c_port = 0; 1333 if (firewire_debug) 1334 fw_print_sid(sid[0]); 1335 node = self_id->p0.phy_id; 1336 if (fc->max_node < node) 1337 fc->max_node = self_id->p0.phy_id; 1338 /* XXX I'm not sure this is the right speed_map */ 1339 fc->speed_map->speed[node][node] = 1340 self_id->p0.phy_speed; 1341 for (j = 0; j < node; j++) { 1342 fc->speed_map->speed[j][node] = 1343 fc->speed_map->speed[node][j] = 1344 min(fc->speed_map->speed[j][j], 1345 self_id->p0.phy_speed); 1346 } 1347 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) && 1348 (self_id->p0.link_active && self_id->p0.contender)) 1349 fc->irm = self_id->p0.phy_id; 1350 if (self_id->p0.port0 >= 0x2) 1351 c_port++; 1352 if (self_id->p0.port1 >= 0x2) 1353 c_port++; 1354 if (self_id->p0.port2 >= 0x2) 1355 c_port++; 1356 } 1357 if (c_port > 2) 1358 i_branch += (c_port - 2); 1359 sid += 2; 1360 self_id++; 1361 fc->topology_map->self_id_count++; 1362 } 1363 /* CRC */ 1364 fc->topology_map->crc = fw_crc16( 1365 (uint32_t *)&fc->topology_map->generation, 1366 fc->topology_map->crc_len * 4); 1367 fc->speed_map->crc = fw_crc16( 1368 (uint32_t *)&fc->speed_map->generation, 1369 fc->speed_map->crc_len * 4); 1370 /* byteswap and copy to CSR */ 1371 p = (uint32_t *)fc->topology_map; 1372 for (i = 0; i <= fc->topology_map->crc_len; i++) 1373 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++); 1374 p = (uint32_t *)fc->speed_map; 1375 CSRARC(fc, SPED_MAP) = htonl(*p++); 1376 CSRARC(fc, SPED_MAP + 4) = htonl(*p++); 1377 /* don't byte-swap uint8_t array */ 1378 bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1) * 4); 1379 1380 fc->max_hop = fc->max_node - i_branch; 1381 device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n", 1382 fc->max_node + 1, fc->max_hop, 1383 (fc->irm == -1) ? "Not IRM capable" : "cable IRM", 1384 fc->irm, (fc->irm == fc->nodeid) ? " (me) " : ""); 1385 1386 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) { 1387 if (fc->irm == fc->nodeid) { 1388 fc->status = FWBUSMGRDONE; 1389 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm); 1390 fw_bmr(fc); 1391 } else { 1392 fc->status = FWBUSMGRELECT; 1393 callout_reset(&fc->bmr_callout, hz / 8, 1394 fw_try_bmr, fc); 1395 } 1396 } else 1397 fc->status = FWBUSMGRDONE; 1398 1399 callout_reset(&fc->busprobe_callout, hz / 4, fw_bus_probe, fc); 1400} 1401 1402/* 1403 * To probe devices on the IEEE1394 bus. 1404 */ 1405static void 1406fw_bus_probe(void *arg) 1407{ 1408 struct firewire_comm *fc; 1409 struct fw_device *fwdev; 1410 int s; 1411 1412 s = splfw(); 1413 fc = arg; 1414 fc->status = FWBUSEXPLORE; 1415 1416 /* Invalidate all devices, just after bus reset. */ 1417 if (firewire_debug) 1418 device_printf(fc->bdev, "%s:" 1419 "iterate and invalidate all nodes\n", 1420 __func__); 1421 STAILQ_FOREACH(fwdev, &fc->devices, link) 1422 if (fwdev->status != FWDEVINVAL) { 1423 fwdev->status = FWDEVINVAL; 1424 fwdev->rcnt = 0; 1425 if (firewire_debug) 1426 device_printf(fc->bdev, "%s:" 1427 "Invalidate Dev ID: %08x%08x\n", 1428 __func__, fwdev->eui.hi, fwdev->eui.lo); 1429 } else { 1430 if (firewire_debug) 1431 device_printf(fc->bdev, "%s:" 1432 "Dev ID: %08x%08x already invalid\n", 1433 __func__, fwdev->eui.hi, fwdev->eui.lo); 1434 } 1435 splx(s); 1436 1437 wakeup(fc); 1438} 1439 1440static int 1441fw_explore_read_quads(struct fw_device *fwdev, int offset, 1442 uint32_t *quad, int length) 1443{ 1444 struct fw_xfer *xfer; 1445 uint32_t tmp; 1446 int i, error; 1447 1448 for (i = 0; i < length; i++, offset += sizeof(uint32_t)) { 1449 xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff, 1450 0xf0000000 | offset, &tmp, fw_xferwake); 1451 if (xfer == NULL) 1452 return (-1); 1453 fw_xferwait(xfer); 1454 1455 if (xfer->resp == 0) 1456 quad[i] = ntohl(tmp); 1457 1458 error = xfer->resp; 1459 fw_xfer_free(xfer); 1460 if (error) 1461 return (error); 1462 } 1463 return (0); 1464} 1465 1466 1467static int 1468fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur) 1469{ 1470 int err, i, off; 1471 struct csrdirectory *dir; 1472 struct csrreg *reg; 1473 1474 dir = (struct csrdirectory *)&fwdev->csrrom[offset / sizeof(uint32_t)]; 1475 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1476 (uint32_t *)dir, 1); 1477 if (err) 1478 return (-1); 1479 1480 offset += sizeof(uint32_t); 1481 reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)]; 1482 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1483 (uint32_t *)reg, dir->crc_len); 1484 if (err) 1485 return (-1); 1486 1487 /* XXX check CRC */ 1488 1489 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1); 1490 if (fwdev->rommax < off) 1491 fwdev->rommax = off; 1492 1493 if (recur == 0) 1494 return (0); 1495 1496 for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) { 1497 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D) 1498 recur = 1; 1499 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L) 1500 recur = 0; 1501 else 1502 continue; 1503 1504 off = offset + reg[i].val * sizeof(uint32_t); 1505 if (off > CROMSIZE) { 1506 printf("%s: invalid offset %d\n", __FUNCTION__, off); 1507 return (-1); 1508 } 1509 err = fw_explore_csrblock(fwdev, off, recur); 1510 if (err) 1511 return (-1); 1512 } 1513 return (0); 1514} 1515 1516static int 1517fw_explore_node(struct fw_device *dfwdev) 1518{ 1519 struct firewire_comm *fc; 1520 struct fw_device *fwdev, *pfwdev, *tfwdev; 1521 uint32_t *csr; 1522 struct csrhdr *hdr; 1523 struct bus_info *binfo; 1524 int err, node; 1525 uint32_t speed_test = 0; 1526 1527 fc = dfwdev->fc; 1528 csr = dfwdev->csrrom; 1529 node = dfwdev->dst; 1530 1531 /* First quad */ 1532 err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1); 1533 if (err) { 1534 dfwdev->status = FWDEVINVAL; 1535 return (-1); 1536 } 1537 hdr = (struct csrhdr *)&csr[0]; 1538 if (hdr->info_len != 4) { 1539 if (firewire_debug) 1540 device_printf(fc->bdev, 1541 "%s: node%d: wrong bus info len(%d)\n", 1542 __func__, node, hdr->info_len); 1543 dfwdev->status = FWDEVINVAL; 1544 return (-1); 1545 } 1546 1547 /* bus info */ 1548 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); 1549 if (err) { 1550 dfwdev->status = FWDEVINVAL; 1551 return (-1); 1552 } 1553 binfo = (struct bus_info *)&csr[1]; 1554 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { 1555 dfwdev->status = FWDEVINVAL; 1556 return (-1); 1557 } 1558 1559 if (firewire_debug) 1560 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n" 1561 "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) " 1562 "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) " 1563 "generation(%d) link_spd(%d)\n", 1564 __func__, node, 1565 binfo->irmc, binfo->cmc, binfo->isc, 1566 binfo->bmc, binfo->pmc, binfo->cyc_clk_acc, 1567 binfo->max_rec, binfo->max_rom, 1568 binfo->generation, binfo->link_spd); 1569 1570 STAILQ_FOREACH(fwdev, &fc->devices, link) 1571 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) 1572 break; 1573 if (fwdev == NULL) { 1574 /* new device */ 1575 fwdev = malloc(sizeof(struct fw_device), M_FW, 1576 M_NOWAIT | M_ZERO); 1577 if (fwdev == NULL) { 1578 device_printf(fc->bdev, "%s: node%d: no memory\n", 1579 __func__, node); 1580 return (-1); 1581 } 1582 fwdev->fc = fc; 1583 fwdev->eui = binfo->eui64; 1584 fwdev->dst = dfwdev->dst; 1585 fwdev->maxrec = dfwdev->maxrec; 1586 fwdev->status = dfwdev->status; 1587 1588 /* 1589 * Pre-1394a-2000 didn't have link_spd in 1590 * the Bus Info block, so try and use the 1591 * speed map value. 1592 * 1394a-2000 compliant devices only use 1593 * the Bus Info Block link spd value, so 1594 * ignore the speed map alltogether. SWB 1595 */ 1596 if (binfo->link_spd == FWSPD_S100 /* 0 */) { 1597 device_printf(fc->bdev, "%s: " 1598 "Pre 1394a-2000 detected\n", __func__); 1599 fwdev->speed = fc->speed_map->speed[fc->nodeid][node]; 1600 } else 1601 fwdev->speed = binfo->link_spd; 1602 /* 1603 * Test this speed with a read to the CSRROM. 1604 * If it fails, slow down the speed and retry. 1605 */ 1606 while (fwdev->speed > FWSPD_S100 /* 0 */) { 1607 err = fw_explore_read_quads(fwdev, CSRROMOFF, 1608 &speed_test, 1); 1609 if (err) { 1610 device_printf(fc->bdev, 1611 "%s: fwdev->speed(%s) decremented due to negotiation\n", 1612 __func__, linkspeed[fwdev->speed]); 1613 fwdev->speed--; 1614 } else 1615 break; 1616 1617 } 1618 1619 /* 1620 * If the fwdev is not found in the 1621 * fc->devices TAILQ, then we will add it. 1622 */ 1623 pfwdev = NULL; 1624 STAILQ_FOREACH(tfwdev, &fc->devices, link) { 1625 if (tfwdev->eui.hi > fwdev->eui.hi || 1626 (tfwdev->eui.hi == fwdev->eui.hi && 1627 tfwdev->eui.lo > fwdev->eui.lo)) 1628 break; 1629 pfwdev = tfwdev; 1630 } 1631 if (pfwdev == NULL) 1632 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link); 1633 else 1634 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link); 1635 } else { 1636 fwdev->dst = node; 1637 fwdev->status = FWDEVINIT; 1638 /* unchanged ? */ 1639 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) { 1640 if (firewire_debug) 1641 device_printf(fc->dev, 1642 "node%d: crom unchanged\n", node); 1643 return (0); 1644 } 1645 } 1646 1647 bzero(&fwdev->csrrom[0], CROMSIZE); 1648 1649 /* copy first quad and bus info block */ 1650 bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5); 1651 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; 1652 1653 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ 1654 1655 if (err) { 1656 if (firewire_debug) 1657 device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n", 1658 __func__, err); 1659 fwdev->status = FWDEVINVAL; 1660 fwdev->csrrom[0] = 0; 1661 } 1662 return (err); 1663 1664} 1665 1666/* 1667 * Find the self_id packet for a node, ignoring sequels. 1668 */ 1669static union fw_self_id * 1670fw_find_self_id(struct firewire_comm *fc, int node) 1671{ 1672 uint32_t i; 1673 union fw_self_id *s; 1674 1675 for (i = 0; i < fc->topology_map->self_id_count; i++) { 1676 s = &fc->topology_map->self_id[i]; 1677 if (s->p0.sequel) 1678 continue; 1679 if (s->p0.phy_id == node) 1680 return s; 1681 } 1682 return 0; 1683} 1684 1685static void 1686fw_explore(struct firewire_comm *fc) 1687{ 1688 int node, err, s, i, todo, todo2, trys; 1689 char nodes[63]; 1690 struct fw_device dfwdev; 1691 union fw_self_id *fwsid; 1692 1693 todo = 0; 1694 /* setup dummy fwdev */ 1695 dfwdev.fc = fc; 1696 dfwdev.speed = 0; 1697 dfwdev.maxrec = 8; /* 512 */ 1698 dfwdev.status = FWDEVINIT; 1699 1700 for (node = 0; node <= fc->max_node; node++) { 1701 /* We don't probe myself and linkdown nodes */ 1702 if (node == fc->nodeid) { 1703 if (firewire_debug) 1704 device_printf(fc->bdev, "%s:" 1705 "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n", 1706 __func__, node, fc->nodeid, fc->max_node); 1707 continue; 1708 } else if (firewire_debug) { 1709 device_printf(fc->bdev, "%s:" 1710 "node(%d) fc->max_node(%d) found\n", 1711 __func__, node, fc->max_node); 1712 } 1713 fwsid = fw_find_self_id(fc, node); 1714 if (!fwsid || !fwsid->p0.link_active) { 1715 if (firewire_debug) 1716 device_printf(fc->bdev, 1717 "%s: node%d: link down\n", 1718 __func__, node); 1719 continue; 1720 } 1721 nodes[todo++] = node; 1722 } 1723 1724 s = splfw(); 1725 for (trys = 0; todo > 0 && trys < 3; trys++) { 1726 todo2 = 0; 1727 for (i = 0; i < todo; i++) { 1728 dfwdev.dst = nodes[i]; 1729 err = fw_explore_node(&dfwdev); 1730 if (err) 1731 nodes[todo2++] = nodes[i]; 1732 if (firewire_debug) 1733 device_printf(fc->bdev, 1734 "%s: node %d, err = %d\n", 1735 __func__, node, err); 1736 } 1737 todo = todo2; 1738 } 1739 splx(s); 1740} 1741 1742static void 1743fw_bus_probe_thread(void *arg) 1744{ 1745 struct firewire_comm *fc; 1746 1747 fc = arg; 1748 1749 mtx_lock(&fc->wait_lock); 1750 while (fc->status != FWBUSDETACH) { 1751 if (fc->status == FWBUSEXPLORE) { 1752 mtx_unlock(&fc->wait_lock); 1753 fw_explore(fc); 1754 fc->status = FWBUSEXPDONE; 1755 if (firewire_debug) 1756 printf("bus_explore done\n"); 1757 fw_attach_dev(fc); 1758 mtx_lock(&fc->wait_lock); 1759 } 1760 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0); 1761 } 1762 mtx_unlock(&fc->wait_lock); 1763 kproc_exit(0); 1764} 1765 1766/* 1767 * To attach sub-devices layer onto IEEE1394 bus. 1768 */ 1769static void 1770fw_attach_dev(struct firewire_comm *fc) 1771{ 1772 struct fw_device *fwdev, *next; 1773 int i, err; 1774 device_t *devlistp; 1775 int devcnt; 1776 struct firewire_dev_comm *fdc; 1777 1778 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { 1779 next = STAILQ_NEXT(fwdev, link); 1780 if (fwdev->status == FWDEVINIT) { 1781 fwdev->status = FWDEVATTACHED; 1782 } else if (fwdev->status == FWDEVINVAL) { 1783 fwdev->rcnt++; 1784 if (firewire_debug) 1785 device_printf(fc->bdev, "%s:" 1786 "fwdev->rcnt(%d), hold_count(%d)\n", 1787 __func__, fwdev->rcnt, hold_count); 1788 if (fwdev->rcnt > hold_count) { 1789 /* 1790 * Remove devices which have not been seen 1791 * for a while. 1792 */ 1793 STAILQ_REMOVE(&fc->devices, fwdev, fw_device, 1794 link); 1795 free(fwdev, M_FW); 1796 } 1797 } 1798 } 1799 1800 err = device_get_children(fc->bdev, &devlistp, &devcnt); 1801 if (err == 0) { 1802 for (i = 0; i < devcnt; i++) { 1803 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 1804 fdc = device_get_softc(devlistp[i]); 1805 if (fdc->post_explore != NULL) 1806 fdc->post_explore(fdc); 1807 } 1808 } 1809 free(devlistp, M_TEMP); 1810 } 1811 1812 return; 1813} 1814 1815/* 1816 * To allocate unique transaction label. 1817 */ 1818static int 1819fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer) 1820{ 1821 u_int dst, new_tlabel; 1822 struct fw_xfer *txfer; 1823 int s; 1824 1825 dst = xfer->send.hdr.mode.hdr.dst & 0x3f; 1826 s = splfw(); 1827 mtx_lock(&fc->tlabel_lock); 1828 new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f; 1829 STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel) 1830 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst) 1831 break; 1832 if (txfer == NULL) { 1833 fc->last_tlabel[dst] = new_tlabel; 1834 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel); 1835 mtx_unlock(&fc->tlabel_lock); 1836 splx(s); 1837 xfer->tl = new_tlabel; 1838 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2; 1839 if (firewire_debug > 1) 1840 printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel); 1841 return (new_tlabel); 1842 } 1843 mtx_unlock(&fc->tlabel_lock); 1844 splx(s); 1845 1846 if (firewire_debug > 1) 1847 printf("fw_get_tlabel: no free tlabel\n"); 1848 return (-1); 1849} 1850 1851static void 1852fw_rcv_copy(struct fw_rcv_buf *rb) 1853{ 1854 struct fw_pkt *pkt; 1855 u_char *p; 1856 struct tcode_info *tinfo; 1857 u_int res, i, len, plen; 1858 1859 rb->xfer->recv.spd = rb->spd; 1860 1861 pkt = (struct fw_pkt *)rb->vec->iov_base; 1862 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode]; 1863 1864 /* Copy header */ 1865 p = (u_char *)&rb->xfer->recv.hdr; 1866 bcopy(rb->vec->iov_base, p, tinfo->hdr_len); 1867 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len; 1868 rb->vec->iov_len -= tinfo->hdr_len; 1869 1870 /* Copy payload */ 1871 p = (u_char *)rb->xfer->recv.payload; 1872 res = rb->xfer->recv.pay_len; 1873 1874 /* special handling for RRESQ */ 1875 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ && 1876 p != NULL && res >= sizeof(uint32_t)) { 1877 *(uint32_t *)p = pkt->mode.rresq.data; 1878 rb->xfer->recv.pay_len = sizeof(uint32_t); 1879 return; 1880 } 1881 1882 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0) 1883 return; 1884 1885 plen = pkt->mode.rresb.len; 1886 1887 for (i = 0; i < rb->nvec; i++, rb->vec++) { 1888 len = MIN(rb->vec->iov_len, plen); 1889 if (res < len) { 1890 device_printf(rb->fc->bdev, "%s:" 1891 " rcv buffer(%d) is %d bytes short.\n", 1892 __func__, rb->xfer->recv.pay_len, len - res); 1893 len = res; 1894 } 1895 bcopy(rb->vec->iov_base, p, len); 1896 p += len; 1897 res -= len; 1898 plen -= len; 1899 if (res == 0 || plen == 0) 1900 break; 1901 } 1902 rb->xfer->recv.pay_len -= res; 1903} 1904 1905/* 1906 * Generic packet receiving process. 1907 */ 1908void 1909fw_rcv(struct fw_rcv_buf *rb) 1910{ 1911 struct fw_pkt *fp, *resfp; 1912 struct fw_bind *bind; 1913 int tcode; 1914 int i, len, oldstate; 1915#if 0 1916 { 1917 uint32_t *qld; 1918 int i; 1919 qld = (uint32_t *)buf; 1920 printf("spd %d len:%d\n", spd, len); 1921 for (i = 0; i <= len && i < 32; i+= 4) { 1922 printf("0x%08x ", ntohl(qld[i/4])); 1923 if ((i % 16) == 15) printf("\n"); 1924 } 1925 if ((i % 16) != 15) printf("\n"); 1926 } 1927#endif 1928 fp = (struct fw_pkt *)rb->vec[0].iov_base; 1929 tcode = fp->mode.common.tcode; 1930 switch (tcode) { 1931 case FWTCODE_WRES: 1932 case FWTCODE_RRESQ: 1933 case FWTCODE_RRESB: 1934 case FWTCODE_LRES: 1935 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1936 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode); 1937 if (rb->xfer == NULL) { 1938 device_printf(rb->fc->bdev, "%s: unknown response " 1939 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n", 1940 __func__, 1941 tcode_str[tcode], tcode, 1942 fp->mode.hdr.src, 1943 fp->mode.hdr.tlrt >> 2, 1944 fp->mode.hdr.tlrt & 3, 1945 fp->mode.rresq.data); 1946#if 0 1947 printf("try ad-hoc work around!!\n"); 1948 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1949 (fp->mode.hdr.tlrt >> 2)^3); 1950 if (rb->xfer == NULL) { 1951 printf("no use...\n"); 1952 return; 1953 } 1954#else 1955 return; 1956#endif 1957 } 1958 fw_rcv_copy(rb); 1959 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP) 1960 rb->xfer->resp = EIO; 1961 else 1962 rb->xfer->resp = 0; 1963 /* make sure the packet is drained in AT queue */ 1964 oldstate = rb->xfer->flag; 1965 rb->xfer->flag = FWXF_RCVD; 1966 switch (oldstate) { 1967 case FWXF_SENT: 1968 fw_xfer_done(rb->xfer); 1969 break; 1970 case FWXF_START: 1971#if 0 1972 if (firewire_debug) 1973 printf("not sent yet tl=%x\n", rb->xfer->tl); 1974#endif 1975 break; 1976 default: 1977 device_printf(rb->fc->bdev, "%s: " 1978 "unexpected flag 0x%02x\n", __func__, 1979 rb->xfer->flag); 1980 } 1981 return; 1982 case FWTCODE_WREQQ: 1983 case FWTCODE_WREQB: 1984 case FWTCODE_RREQQ: 1985 case FWTCODE_RREQB: 1986 case FWTCODE_LREQ: 1987 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi, 1988 fp->mode.rreqq.dest_lo); 1989 if (bind == NULL) { 1990 device_printf(rb->fc->bdev, "%s: " 1991 "Unknown service addr 0x%04x:0x%08x %s(%x)" 1992 " src=0x%x data=%x\n", 1993 __func__, 1994 fp->mode.wreqq.dest_hi, 1995 fp->mode.wreqq.dest_lo, 1996 tcode_str[tcode], tcode, 1997 fp->mode.hdr.src, 1998 ntohl(fp->mode.wreqq.data)); 1999 2000 if (rb->fc->status == FWBUSINIT) { 2001 device_printf(rb->fc->bdev, 2002 "%s: cannot respond(bus reset)!\n", 2003 __func__); 2004 return; 2005 } 2006 rb->xfer = fw_xfer_alloc(M_FWXFER); 2007 if (rb->xfer == NULL) { 2008 return; 2009 } 2010 rb->xfer->send.spd = rb->spd; 2011 rb->xfer->send.pay_len = 0; 2012 resfp = &rb->xfer->send.hdr; 2013 switch (tcode) { 2014 case FWTCODE_WREQQ: 2015 case FWTCODE_WREQB: 2016 resfp->mode.hdr.tcode = FWTCODE_WRES; 2017 break; 2018 case FWTCODE_RREQQ: 2019 resfp->mode.hdr.tcode = FWTCODE_RRESQ; 2020 break; 2021 case FWTCODE_RREQB: 2022 resfp->mode.hdr.tcode = FWTCODE_RRESB; 2023 break; 2024 case FWTCODE_LREQ: 2025 resfp->mode.hdr.tcode = FWTCODE_LRES; 2026 break; 2027 } 2028 resfp->mode.hdr.dst = fp->mode.hdr.src; 2029 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt; 2030 resfp->mode.hdr.pri = fp->mode.hdr.pri; 2031 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR; 2032 resfp->mode.rresb.extcode = 0; 2033 resfp->mode.rresb.len = 0; 2034/* 2035 rb->xfer->hand = fw_xferwake; 2036*/ 2037 rb->xfer->hand = fw_xfer_free; 2038 if (fw_asyreq(rb->fc, -1, rb->xfer)) 2039 fw_xfer_free(rb->xfer); 2040 } 2041 len = 0; 2042 for (i = 0; i < rb->nvec; i++) 2043 len += rb->vec[i].iov_len; 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 */ 2103static void 2104fw_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 2128error: 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 */ 2137static void 2138fw_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 */ 2178static void 2179fw_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 */ 2260uint16_t 2261fw_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 */ 2282static int 2283fw_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 2335int 2336fw_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 2363static int 2364fw_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 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone, 2372 fwdev_clone, 0, 1000); 2373 break; 2374 case MOD_UNLOAD: 2375 if (fwdev_ehtag != NULL) 2376 EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag); 2377 break; 2378 case MOD_SHUTDOWN: 2379 break; 2380 default: 2381 return (EOPNOTSUPP); 2382 } 2383 return (err); 2384} 2385 2386 2387DRIVER_MODULE(firewire, fwohci, firewire_driver, firewire_devclass, 2388 fw_modevent,0); 2389MODULE_VERSION(firewire, 1); 2390