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: stable/11/sys/dev/firewire/firewire.c 310077 2016-12-14 16:43:04Z avg $"); 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; 149 150 FW_GLOCK(fc); 151 STAILQ_FOREACH(fwdev, &fc->devices, link) 152 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL) 153 break; 154 FW_GUNLOCK(fc); 155 156 return fwdev; 157} 158 159/* 160 * Lookup fwdev by EUI64. 161 */ 162struct fw_device * 163fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui) 164{ 165 struct fw_device *fwdev; 166 167 FW_GLOCK(fc); 168 STAILQ_FOREACH(fwdev, &fc->devices, link) 169 if (FW_EUI64_EQUAL(fwdev->eui, *eui)) 170 break; 171 FW_GUNLOCK(fc); 172 173 if (fwdev == NULL) 174 return NULL; 175 if (fwdev->status == FWDEVINVAL) 176 return NULL; 177 return fwdev; 178} 179 180/* 181 * Async. request procedure for userland application. 182 */ 183int 184fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer) 185{ 186 int err = 0; 187 struct fw_xferq *xferq; 188 int len; 189 struct fw_pkt *fp; 190 int tcode; 191 struct tcode_info *info; 192 193 if (xfer == NULL) 194 return EINVAL; 195 if (xfer->hand == NULL) { 196 printf("hand == NULL\n"); 197 return EINVAL; 198 } 199 fp = &xfer->send.hdr; 200 201 tcode = fp->mode.common.tcode & 0xf; 202 info = &fc->tcode[tcode]; 203 if (info->flag == 0) { 204 printf("invalid tcode=%x\n", tcode); 205 return EINVAL; 206 } 207 208 /* XXX allow bus explore packets only after bus rest */ 209 if ((fc->status < FWBUSEXPLORE) && 210 ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) || 211 (fp->mode.rreqq.dest_lo < 0xf0000000) || 212 (fp->mode.rreqq.dest_lo >= 0xf0001000))) { 213 xfer->resp = EAGAIN; 214 xfer->flag = FWXF_BUSY; 215 return (EAGAIN); 216 } 217 218 if (info->flag & FWTI_REQ) 219 xferq = fc->atq; 220 else 221 xferq = fc->ats; 222 len = info->hdr_len; 223 if (xfer->send.pay_len > MAXREC(fc->maxrec)) { 224 printf("send.pay_len > maxrec\n"); 225 return EINVAL; 226 } 227 if (info->flag & FWTI_BLOCK_STR) 228 len = fp->mode.stream.len; 229 else if (info->flag & FWTI_BLOCK_ASY) 230 len = fp->mode.rresb.len; 231 else 232 len = 0; 233 if (len != xfer->send.pay_len) { 234 printf("len(%d) != send.pay_len(%d) %s(%x)\n", 235 len, xfer->send.pay_len, tcode_str[tcode], tcode); 236 return EINVAL; 237 } 238 239 if (xferq->start == NULL) { 240 printf("xferq->start == NULL\n"); 241 return EINVAL; 242 } 243 if (!(xferq->queued < xferq->maxq)) { 244 device_printf(fc->bdev, "Discard a packet (queued=%d)\n", 245 xferq->queued); 246 return EAGAIN; 247 } 248 249 xfer->tl = -1; 250 if (info->flag & FWTI_TLABEL) { 251 if (fw_get_tlabel(fc, xfer) < 0) 252 return EAGAIN; 253 } 254 255 xfer->resp = 0; 256 xfer->fc = fc; 257 xfer->q = xferq; 258 259 fw_asystart(xfer); 260 return err; 261} 262 263/* 264 * Wakeup blocked process. 265 */ 266void 267fw_xferwake(struct fw_xfer *xfer) 268{ 269 struct mtx *lock = &xfer->fc->wait_lock; 270 271 mtx_lock(lock); 272 xfer->flag |= FWXF_WAKE; 273 mtx_unlock(lock); 274 275 wakeup(xfer); 276 return; 277} 278 279int 280fw_xferwait(struct fw_xfer *xfer) 281{ 282 struct mtx *lock = &xfer->fc->wait_lock; 283 int err = 0; 284 285 mtx_lock(lock); 286 while ((xfer->flag & FWXF_WAKE) == 0) 287 err = msleep(xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0); 288 mtx_unlock(lock); 289 290 return (err); 291} 292 293/* 294 * Async. request with given xfer structure. 295 */ 296static void 297fw_asystart(struct fw_xfer *xfer) 298{ 299 struct firewire_comm *fc = xfer->fc; 300 301 /* Protect from interrupt/timeout */ 302 FW_GLOCK(fc); 303 xfer->flag = FWXF_INQ; 304 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); 305#if 0 306 xfer->q->queued++; 307#endif 308 FW_GUNLOCK(fc); 309 /* XXX just queue for mbuf */ 310 if (xfer->mbuf == NULL) 311 xfer->q->start(fc); 312 return; 313} 314 315static void 316firewire_identify(driver_t *driver, device_t parent) 317{ 318 BUS_ADD_CHILD(parent, 0, "firewire", -1); 319} 320 321static int 322firewire_probe(device_t dev) 323{ 324 device_set_desc(dev, "IEEE1394(FireWire) bus"); 325 return (0); 326} 327 328/* Just use a per-packet callout? */ 329static void 330firewire_xfer_timeout(void *arg, int pending) 331{ 332 struct firewire_comm *fc = (struct firewire_comm *)arg; 333 struct fw_xfer *xfer, *txfer; 334 struct timeval tv; 335 struct timeval split_timeout; 336 STAILQ_HEAD(, fw_xfer) xfer_timeout; 337 int i; 338 339 split_timeout.tv_sec = 0; 340 split_timeout.tv_usec = 200 * 1000; /* 200 msec */ 341 342 microtime(&tv); 343 timevalsub(&tv, &split_timeout); 344 STAILQ_INIT(&xfer_timeout); 345 346 mtx_lock(&fc->tlabel_lock); 347 for (i = 0; i < nitems(fc->tlabels); i++) { 348 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 349 if ((xfer->flag & FWXF_SENT) == 0) 350 /* not sent yet */ 351 break; 352 if (timevalcmp(&xfer->tv, &tv, >)) 353 /* the rests are newer than this */ 354 break; 355 device_printf(fc->bdev, 356 "split transaction timeout: tl=0x%x flag=0x%02x\n", 357 i, xfer->flag); 358 fw_dump_hdr(&xfer->send.hdr, "send"); 359 xfer->resp = ETIMEDOUT; 360 xfer->tl = -1; 361 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 362 STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel); 363 } 364 } 365 mtx_unlock(&fc->tlabel_lock); 366 fc->timeout(fc); 367 368 STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer) 369 xfer->hand(xfer); 370} 371 372#define WATCHDOG_HZ 10 373static void 374firewire_watchdog(void *arg) 375{ 376 struct firewire_comm *fc; 377 static int watchdog_clock = 0; 378 379 fc = arg; 380 381 /* 382 * At boot stage, the device interrupt is disabled and 383 * We encounter a timeout easily. To avoid this, 384 * ignore clock interrupt for a while. 385 */ 386 if (watchdog_clock > WATCHDOG_HZ * 15) 387 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout); 388 else 389 watchdog_clock++; 390 391 callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ, 392 firewire_watchdog, fc); 393} 394 395/* 396 * The attach routine. 397 */ 398static int 399firewire_attach(device_t dev) 400{ 401 int unit; 402 struct firewire_softc *sc = device_get_softc(dev); 403 device_t pa = device_get_parent(dev); 404 struct firewire_comm *fc; 405 406 fc = device_get_softc(pa); 407 sc->fc = fc; 408 fc->status = FWBUSNOTREADY; 409 410 unit = device_get_unit(dev); 411 if (fc->nisodma > FWMAXNDMA) 412 fc->nisodma = FWMAXNDMA; 413 414 fwdev_makedev(sc); 415 416 fc->crom_src_buf = malloc(sizeof(struct crom_src_buf), 417 M_FW, M_NOWAIT | M_ZERO); 418 if (fc->crom_src_buf == NULL) { 419 device_printf(fc->dev, 420 "%s: unable to allocate crom src buffer\n", __func__); 421 return ENOMEM; 422 } 423 fc->topology_map = malloc(sizeof(struct fw_topology_map), 424 M_FW, M_NOWAIT | M_ZERO); 425 if (fc->topology_map == NULL) { 426 device_printf(fc->dev, "%s: unable to allocate topology map\n", 427 __func__); 428 free(fc->crom_src_buf, M_FW); 429 return ENOMEM; 430 } 431 fc->speed_map = malloc(sizeof(struct fw_speed_map), 432 M_FW, M_NOWAIT | M_ZERO); 433 if (fc->speed_map == NULL) { 434 device_printf(fc->dev, "%s: unable to allocate speed map\n", 435 __func__); 436 free(fc->crom_src_buf, M_FW); 437 free(fc->topology_map, M_FW); 438 return ENOMEM; 439 } 440 441 mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF); 442 mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF); 443 CALLOUT_INIT(&fc->timeout_callout); 444 CALLOUT_INIT(&fc->bmr_callout); 445 CALLOUT_INIT(&fc->busprobe_callout); 446 TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, fc); 447 448 callout_reset(&sc->fc->timeout_callout, hz, 449 firewire_watchdog, sc->fc); 450 451 /* create thread */ 452 kproc_create(fw_bus_probe_thread, fc, &fc->probe_thread, 453 0, 0, "fw%d_probe", unit); 454 455 /* Locate our children */ 456 bus_generic_probe(dev); 457 458 /* launch attachement of the added children */ 459 bus_generic_attach(dev); 460 461 /* bus_reset */ 462 FW_GLOCK(fc); 463 fw_busreset(fc, FWBUSNOTREADY); 464 FW_GUNLOCK(fc); 465 fc->ibr(fc); 466 467 return 0; 468} 469 470/* 471 * Attach it as child. 472 */ 473static device_t 474firewire_add_child(device_t dev, u_int order, const char *name, int unit) 475{ 476 device_t child; 477 struct firewire_softc *sc; 478 479 sc = device_get_softc(dev); 480 child = device_add_child(dev, name, unit); 481 if (child) { 482 device_set_ivars(child, sc->fc); 483 device_probe_and_attach(child); 484 } 485 486 return child; 487} 488 489static int 490firewire_resume(device_t dev) 491{ 492 struct firewire_softc *sc; 493 494 sc = device_get_softc(dev); 495 sc->fc->status = FWBUSNOTREADY; 496 497 bus_generic_resume(dev); 498 499 return (0); 500} 501 502/* 503 * Detach it. 504 */ 505static int 506firewire_detach(device_t dev) 507{ 508 struct firewire_softc *sc; 509 struct firewire_comm *fc; 510 struct fw_device *fwdev, *fwdev_next; 511 int err; 512 513 sc = device_get_softc(dev); 514 fc = sc->fc; 515 mtx_lock(&fc->wait_lock); 516 fc->status = FWBUSDETACH; 517 wakeup(fc); 518 if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60)) 519 printf("firewire probe thread didn't die\n"); 520 mtx_unlock(&fc->wait_lock); 521 522 if (fc->arq != 0 && fc->arq->maxq > 0) 523 fw_drain_txq(fc); 524 525 if ((err = fwdev_destroydev(sc)) != 0) 526 return err; 527 528 if ((err = bus_generic_detach(dev)) != 0) 529 return err; 530 531 callout_stop(&fc->timeout_callout); 532 callout_stop(&fc->bmr_callout); 533 callout_stop(&fc->busprobe_callout); 534 535 /* XXX xfer_free and untimeout on all xfers */ 536 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; 537 fwdev = fwdev_next) { 538 fwdev_next = STAILQ_NEXT(fwdev, link); 539 free(fwdev, M_FW); 540 } 541 free(fc->topology_map, M_FW); 542 free(fc->speed_map, M_FW); 543 free(fc->crom_src_buf, M_FW); 544 545 mtx_destroy(&fc->tlabel_lock); 546 mtx_destroy(&fc->wait_lock); 547 return (0); 548} 549 550static void 551fw_xferq_drain(struct fw_xferq *xferq) 552{ 553 struct fw_xfer *xfer; 554 555 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) { 556 STAILQ_REMOVE_HEAD(&xferq->q, link); 557#if 0 558 xferq->queued--; 559#endif 560 xfer->resp = EAGAIN; 561 xfer->flag = FWXF_SENTERR; 562 fw_xfer_done(xfer); 563 } 564} 565 566void 567fw_drain_txq(struct firewire_comm *fc) 568{ 569 struct fw_xfer *xfer, *txfer; 570 STAILQ_HEAD(, fw_xfer) xfer_drain; 571 int i; 572 573 STAILQ_INIT(&xfer_drain); 574 575 FW_GLOCK(fc); 576 fw_xferq_drain(fc->atq); 577 fw_xferq_drain(fc->ats); 578 for (i = 0; i < fc->nisodma; i++) 579 fw_xferq_drain(fc->it[i]); 580 FW_GUNLOCK(fc); 581 582 mtx_lock(&fc->tlabel_lock); 583 for (i = 0; i < 0x40; i++) 584 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 585 if (firewire_debug) 586 printf("tl=%d flag=%d\n", i, xfer->flag); 587 xfer->tl = -1; 588 xfer->resp = EAGAIN; 589 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 590 STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel); 591 } 592 mtx_unlock(&fc->tlabel_lock); 593 594 STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer) 595 xfer->hand(xfer); 596} 597 598static void 599fw_reset_csr(struct firewire_comm *fc) 600{ 601 int i; 602 603 CSRARC(fc, STATE_CLEAR) 604 = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 605 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 606 CSRARC(fc, NODE_IDS) = 0x3f; 607 608 CSRARC(fc, TOPO_MAP + 8) = 0; 609 fc->irm = -1; 610 611 fc->max_node = -1; 612 613 for (i = 2; i < 0x100 / 4 - 2; i++) { 614 CSRARC(fc, SPED_MAP + i * 4) = 0; 615 } 616 CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 617 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 618 CSRARC(fc, RESET_START) = 0; 619 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0; 620 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19; 621 CSRARC(fc, CYCLE_TIME) = 0x0; 622 CSRARC(fc, BUS_TIME) = 0x0; 623 CSRARC(fc, BUS_MGR_ID) = 0x3f; 624 CSRARC(fc, BANDWIDTH_AV) = 4915; 625 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; 626 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; 627 CSRARC(fc, IP_CHANNELS) = (1U << 31); 628 629 CSRARC(fc, CONF_ROM) = 0x04 << 24; 630 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */ 631 CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 | 632 1 << 28 | 0xff << 16 | 0x09 << 8; 633 CSRARC(fc, CONF_ROM + 0xc) = 0; 634 635 /* DV depend CSRs see blue book */ 636 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON; 637 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON; 638 639 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14); 640 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 641} 642 643static void 644fw_init_crom(struct firewire_comm *fc) 645{ 646 struct crom_src *src; 647 648 src = &fc->crom_src_buf->src; 649 bzero(src, sizeof(struct crom_src)); 650 651 /* BUS info sample */ 652 src->hdr.info_len = 4; 653 654 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394; 655 656 src->businfo.irmc = 1; 657 src->businfo.cmc = 1; 658 src->businfo.isc = 1; 659 src->businfo.bmc = 1; 660 src->businfo.pmc = 0; 661 src->businfo.cyc_clk_acc = 100; 662 src->businfo.max_rec = fc->maxrec; 663 src->businfo.max_rom = MAXROM_4; 664#define FW_GENERATION_CHANGEABLE 2 665 src->businfo.generation = FW_GENERATION_CHANGEABLE; 666 src->businfo.link_spd = fc->speed; 667 668 src->businfo.eui64.hi = fc->eui.hi; 669 src->businfo.eui64.lo = fc->eui.lo; 670 671 STAILQ_INIT(&src->chunk_list); 672 673 fc->crom_src = src; 674 fc->crom_root = &fc->crom_src_buf->root; 675} 676 677static void 678fw_reset_crom(struct firewire_comm *fc) 679{ 680 struct crom_src_buf *buf; 681 struct crom_src *src; 682 struct crom_chunk *root; 683 684 buf = fc->crom_src_buf; 685 src = fc->crom_src; 686 root = fc->crom_root; 687 688 STAILQ_INIT(&src->chunk_list); 689 690 bzero(root, sizeof(struct crom_chunk)); 691 crom_add_chunk(src, NULL, root, 0); 692 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */ 693 /* private company_id */ 694 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); 695 crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project"); 696 crom_add_entry(root, CSRKEY_HW, __FreeBSD_version); 697 mtx_lock(&prison0.pr_mtx); 698 crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname); 699 mtx_unlock(&prison0.pr_mtx); 700} 701 702/* 703 * Called after bus reset. 704 */ 705void 706fw_busreset(struct firewire_comm *fc, uint32_t new_status) 707{ 708 struct firewire_dev_comm *fdc; 709 struct crom_src *src; 710 device_t *devlistp; 711 uint32_t *newrom; 712 int i, devcnt; 713 714 FW_GLOCK_ASSERT(fc); 715 if (fc->status == FWBUSMGRELECT) 716 callout_stop(&fc->bmr_callout); 717 718 fc->status = new_status; 719 fw_reset_csr(fc); 720 721 if (fc->status == FWBUSNOTREADY) 722 fw_init_crom(fc); 723 724 fw_reset_crom(fc); 725 726 if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) { 727 for (i = 0; i < devcnt; i++) 728 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 729 fdc = device_get_softc(devlistp[i]); 730 if (fdc->post_busreset != NULL) 731 fdc->post_busreset(fdc); 732 } 733 free(devlistp, M_TEMP); 734 } 735 736 src = &fc->crom_src_buf->src; 737 /* 738 * If the old config rom needs to be overwritten, 739 * bump the businfo.generation indicator to 740 * indicate that we need to be reprobed 741 * See 1394a-2000 8.3.2.5.4 for more details. 742 * generation starts at 2 and rolls over at 0xF 743 * back to 2. 744 * 745 * A generation of 0 indicates a device 746 * that is not 1394a-2000 compliant. 747 * A generation of 1 indicates a device that 748 * does not change it's Bus Info Block or 749 * Configuration ROM. 750 */ 751#define FW_MAX_GENERATION 0xF 752 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); 753 src = &fc->crom_src_buf->src; 754 crom_load(src, newrom, CROMSIZE); 755 if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) { 756 /* Bump generation and reload. */ 757 src->businfo.generation++; 758 759 /* Handle generation count wraps. */ 760 if (src->businfo.generation < FW_GENERATION_CHANGEABLE) 761 src->businfo.generation = FW_GENERATION_CHANGEABLE; 762 763 /* Recalculate CRC to account for generation change. */ 764 crom_load(src, newrom, CROMSIZE); 765 bcopy(newrom, fc->config_rom, CROMSIZE); 766 } 767 free(newrom, M_FW); 768} 769 770/* Call once after reboot */ 771void fw_init(struct firewire_comm *fc) 772{ 773 int i; 774#ifdef FW_VMACCESS 775 struct fw_xfer *xfer; 776 struct fw_bind *fwb; 777#endif 778 779 fc->arq->queued = 0; 780 fc->ars->queued = 0; 781 fc->atq->queued = 0; 782 fc->ats->queued = 0; 783 784 fc->arq->buf = NULL; 785 fc->ars->buf = NULL; 786 fc->atq->buf = NULL; 787 fc->ats->buf = NULL; 788 789 fc->arq->flag = 0; 790 fc->ars->flag = 0; 791 fc->atq->flag = 0; 792 fc->ats->flag = 0; 793 794 STAILQ_INIT(&fc->atq->q); 795 STAILQ_INIT(&fc->ats->q); 796 797 for (i = 0; i < fc->nisodma; i++) { 798 fc->it[i]->queued = 0; 799 fc->ir[i]->queued = 0; 800 801 fc->it[i]->start = NULL; 802 fc->ir[i]->start = NULL; 803 804 fc->it[i]->buf = NULL; 805 fc->ir[i]->buf = NULL; 806 807 fc->it[i]->flag = FWXFERQ_STREAM; 808 fc->ir[i]->flag = FWXFERQ_STREAM; 809 810 STAILQ_INIT(&fc->it[i]->q); 811 STAILQ_INIT(&fc->ir[i]->q); 812 } 813 814 fc->arq->maxq = FWMAXQUEUE; 815 fc->ars->maxq = FWMAXQUEUE; 816 fc->atq->maxq = FWMAXQUEUE; 817 fc->ats->maxq = FWMAXQUEUE; 818 819 for (i = 0; i < fc->nisodma; i++) { 820 fc->ir[i]->maxq = FWMAXQUEUE; 821 fc->it[i]->maxq = FWMAXQUEUE; 822 } 823 824 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16; 825 CSRARC(fc, TOPO_MAP + 4) = 1; 826 CSRARC(fc, SPED_MAP) = 0x3f1 << 16; 827 CSRARC(fc, SPED_MAP + 4) = 1; 828 829 STAILQ_INIT(&fc->devices); 830 831 /* Initialize Async handlers */ 832 STAILQ_INIT(&fc->binds); 833 for (i = 0; i < 0x40; i++) { 834 STAILQ_INIT(&fc->tlabels[i]); 835 } 836 837/* DV depend CSRs see blue book */ 838#if 0 839 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */ 840 CSRARC(fc, oPCR) = 0x8000007a; 841 for (i = 4; i < 0x7c/4; i += 4) { 842 CSRARC(fc, i + oPCR) = 0x8000007a; 843 } 844 845 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */ 846 CSRARC(fc, iPCR) = 0x803f0000; 847 for (i = 4; i < 0x7c/4; i += 4) { 848 CSRARC(fc, i + iPCR) = 0x0; 849 } 850#endif 851 852 fc->crom_src_buf = NULL; 853 854#ifdef FW_VMACCESS 855 xfer = fw_xfer_alloc(); 856 if (xfer == NULL) 857 return; 858 859 fwb = malloc(sizeof(struct fw_bind), M_FW, M_NOWAIT); 860 if (fwb == NULL) { 861 fw_xfer_free(xfer); 862 return; 863 } 864 xfer->hand = fw_vmaccess; 865 xfer->fc = fc; 866 xfer->sc = NULL; 867 868 fwb->start_hi = 0x2; 869 fwb->start_lo = 0; 870 fwb->addrlen = 0xffffffff; 871 fwb->xfer = xfer; 872 fw_bindadd(fc, fwb); 873#endif 874} 875 876#define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)? -1 : \ 877 ((fwb)->end < (addr)) ? 1 : 0) 878 879/* 880 * To lookup bound process from IEEE1394 address. 881 */ 882struct fw_bind * 883fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo) 884{ 885 u_int64_t addr; 886 struct fw_bind *tfw, *r = NULL; 887 888 addr = ((u_int64_t)dest_hi << 32) | dest_lo; 889 FW_GLOCK(fc); 890 STAILQ_FOREACH(tfw, &fc->binds, fclist) 891 if (BIND_CMP(addr, tfw) == 0) { 892 r = tfw; 893 break; 894 } 895 FW_GUNLOCK(fc); 896 return (r); 897} 898 899/* 900 * To bind IEEE1394 address block to process. 901 */ 902int 903fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb) 904{ 905 struct fw_bind *tfw, *prev = NULL; 906 int r = 0; 907 908 if (fwb->start > fwb->end) { 909 printf("%s: invalid range\n", __func__); 910 return EINVAL; 911 } 912 913 FW_GLOCK(fc); 914 STAILQ_FOREACH(tfw, &fc->binds, fclist) { 915 if (fwb->end < tfw->start) 916 break; 917 prev = tfw; 918 } 919 if (prev == NULL) 920 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist); 921 else if (prev->end < fwb->start) 922 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist); 923 else { 924 printf("%s: bind failed\n", __func__); 925 r = EBUSY; 926 } 927 FW_GUNLOCK(fc); 928 return (r); 929} 930 931/* 932 * To free IEEE1394 address block. 933 */ 934int 935fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb) 936{ 937#if 0 938 struct fw_xfer *xfer, *next; 939#endif 940 struct fw_bind *tfw; 941 int s; 942 943 s = splfw(); 944 FW_GLOCK(fc); 945 STAILQ_FOREACH(tfw, &fc->binds, fclist) 946 if (tfw == fwb) { 947 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist); 948 goto found; 949 } 950 951 printf("%s: no such binding\n", __func__); 952 FW_GUNLOCK(fc); 953 splx(s); 954 return (1); 955found: 956#if 0 957 /* shall we do this? */ 958 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) { 959 next = STAILQ_NEXT(xfer, link); 960 fw_xfer_free(xfer); 961 } 962 STAILQ_INIT(&fwb->xferlist); 963#endif 964 FW_GUNLOCK(fc); 965 966 splx(s); 967 return 0; 968} 969 970int 971fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type, 972 int slen, int rlen, int n, 973 struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *)) 974{ 975 int i, s; 976 struct fw_xfer *xfer; 977 978 for (i = 0; i < n; i++) { 979 xfer = fw_xfer_alloc_buf(type, slen, rlen); 980 if (xfer == NULL) 981 return (i); 982 xfer->fc = fc; 983 xfer->sc = sc; 984 xfer->hand = hand; 985 s = splfw(); 986 STAILQ_INSERT_TAIL(q, xfer, link); 987 splx(s); 988 } 989 return (n); 990} 991 992void 993fw_xferlist_remove(struct fw_xferlist *q) 994{ 995 struct fw_xfer *xfer, *next; 996 997 for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) { 998 next = STAILQ_NEXT(xfer, link); 999 fw_xfer_free_buf(xfer); 1000 } 1001 STAILQ_INIT(q); 1002} 1003/* 1004 * dump packet header 1005 */ 1006static void 1007fw_dump_hdr(struct fw_pkt *fp, char *prefix) 1008{ 1009 printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x " 1010 "src=0x%03x\n", prefix, 1011 fp->mode.hdr.dst & 0x3f, 1012 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3, 1013 fp->mode.hdr.tcode, fp->mode.hdr.pri, 1014 fp->mode.hdr.src); 1015} 1016 1017/* 1018 * To free transaction label. 1019 */ 1020static void 1021fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer) 1022{ 1023 struct fw_xfer *txfer; 1024 1025 mtx_lock(&fc->tlabel_lock); 1026 if (xfer->tl < 0) { 1027 mtx_unlock(&fc->tlabel_lock); 1028 return; 1029 } 1030 /* make sure the label is allocated */ 1031 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) 1032 if (txfer == xfer) 1033 break; 1034 if (txfer == NULL) { 1035 printf("%s: the xfer is not in the queue " 1036 "(tlabel=%d, flag=0x%x)\n", 1037 __FUNCTION__, xfer->tl, xfer->flag); 1038 fw_dump_hdr(&xfer->send.hdr, "send"); 1039 fw_dump_hdr(&xfer->recv.hdr, "recv"); 1040 kdb_backtrace(); 1041 mtx_unlock(&fc->tlabel_lock); 1042 return; 1043 } 1044 1045 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); 1046 xfer->tl = -1; 1047 mtx_unlock(&fc->tlabel_lock); 1048 return; 1049} 1050 1051/* 1052 * To obtain XFER structure by transaction label. 1053 */ 1054static struct fw_xfer * 1055fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode) 1056{ 1057 struct fw_xfer *xfer; 1058 int s = splfw(); 1059 int req; 1060 1061 mtx_lock(&fc->tlabel_lock); 1062 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) 1063 if (xfer->send.hdr.mode.hdr.dst == node) { 1064 mtx_unlock(&fc->tlabel_lock); 1065 splx(s); 1066 KASSERT(xfer->tl == tlabel, 1067 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel)); 1068 /* extra sanity check */ 1069 req = xfer->send.hdr.mode.hdr.tcode; 1070 if (xfer->fc->tcode[req].valid_res != tcode) { 1071 printf("%s: invalid response tcode " 1072 "(0x%x for 0x%x)\n", __FUNCTION__, 1073 tcode, req); 1074 return (NULL); 1075 } 1076 1077 if (firewire_debug > 2) 1078 printf("fw_tl2xfer: found tl=%d\n", tlabel); 1079 return (xfer); 1080 } 1081 mtx_unlock(&fc->tlabel_lock); 1082 if (firewire_debug > 1) 1083 printf("fw_tl2xfer: not found tl=%d\n", tlabel); 1084 splx(s); 1085 return (NULL); 1086} 1087 1088/* 1089 * To allocate IEEE1394 XFER structure. 1090 */ 1091struct fw_xfer * 1092fw_xfer_alloc(struct malloc_type *type) 1093{ 1094 struct fw_xfer *xfer; 1095 1096 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO); 1097 if (xfer == NULL) 1098 return xfer; 1099 1100 xfer->malloc = type; 1101 xfer->tl = -1; 1102 1103 return xfer; 1104} 1105 1106struct fw_xfer * 1107fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len) 1108{ 1109 struct fw_xfer *xfer; 1110 1111 xfer = fw_xfer_alloc(type); 1112 if (xfer == NULL) 1113 return (NULL); 1114 xfer->send.pay_len = send_len; 1115 xfer->recv.pay_len = recv_len; 1116 if (send_len > 0) { 1117 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO); 1118 if (xfer->send.payload == NULL) { 1119 fw_xfer_free(xfer); 1120 return (NULL); 1121 } 1122 } 1123 if (recv_len > 0) { 1124 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT); 1125 if (xfer->recv.payload == NULL) { 1126 if (xfer->send.payload != NULL) 1127 free(xfer->send.payload, type); 1128 fw_xfer_free(xfer); 1129 return (NULL); 1130 } 1131 } 1132 return (xfer); 1133} 1134 1135/* 1136 * IEEE1394 XFER post process. 1137 */ 1138void 1139fw_xfer_done(struct fw_xfer *xfer) 1140{ 1141 if (xfer->hand == NULL) { 1142 printf("hand == NULL\n"); 1143 return; 1144 } 1145 1146 if (xfer->fc == NULL) 1147 panic("fw_xfer_done: why xfer->fc is NULL?"); 1148 1149 fw_tl_free(xfer->fc, xfer); 1150 xfer->hand(xfer); 1151} 1152 1153void 1154fw_xfer_unload(struct fw_xfer *xfer) 1155{ 1156 1157 if (xfer == NULL) 1158 return; 1159 1160 if (xfer->fc != NULL) { 1161 FW_GLOCK(xfer->fc); 1162 if (xfer->flag & FWXF_INQ) { 1163 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); 1164 xfer->flag &= ~FWXF_INQ; 1165 #if 0 1166 xfer->q->queued--; 1167 #endif 1168 } 1169 FW_GUNLOCK(xfer->fc); 1170 1171 /* 1172 * Ensure that any tlabel owner can't access this 1173 * xfer after it's freed. 1174 */ 1175 fw_tl_free(xfer->fc, xfer); 1176#if 1 1177 if (xfer->flag & FWXF_START) 1178 /* 1179 * This could happen if: 1180 * 1. We call fwohci_arcv() before fwohci_txd(). 1181 * 2. firewire_watch() is called. 1182 */ 1183 printf("fw_xfer_free FWXF_START\n"); 1184#endif 1185 } 1186 xfer->flag = FWXF_INIT; 1187 xfer->resp = 0; 1188} 1189 1190/* 1191 * To free IEEE1394 XFER structure. 1192 */ 1193void 1194fw_xfer_free_buf(struct fw_xfer *xfer) 1195{ 1196 if (xfer == NULL) { 1197 printf("%s: xfer == NULL\n", __func__); 1198 return; 1199 } 1200 fw_xfer_unload(xfer); 1201 if (xfer->send.payload != NULL) 1202 free(xfer->send.payload, xfer->malloc); 1203 if (xfer->recv.payload != NULL) 1204 free(xfer->recv.payload, xfer->malloc); 1205 free(xfer, xfer->malloc); 1206} 1207 1208void 1209fw_xfer_free(struct fw_xfer *xfer) 1210{ 1211 if (xfer == NULL) { 1212 printf("%s: xfer == NULL\n", __func__); 1213 return; 1214 } 1215 fw_xfer_unload(xfer); 1216 free(xfer, xfer->malloc); 1217} 1218 1219void 1220fw_asy_callback_free(struct fw_xfer *xfer) 1221{ 1222#if 0 1223 printf("asyreq done flag=0x%02x resp=%d\n", 1224 xfer->flag, xfer->resp); 1225#endif 1226 fw_xfer_free(xfer); 1227} 1228 1229/* 1230 * To configure PHY. 1231 */ 1232static void 1233fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count) 1234{ 1235 struct fw_xfer *xfer; 1236 struct fw_pkt *fp; 1237 1238 fc->status = FWBUSPHYCONF; 1239 1240 xfer = fw_xfer_alloc(M_FWXFER); 1241 if (xfer == NULL) 1242 return; 1243 xfer->fc = fc; 1244 xfer->hand = fw_asy_callback_free; 1245 1246 fp = &xfer->send.hdr; 1247 fp->mode.ld[1] = 0; 1248 if (root_node >= 0) 1249 fp->mode.ld[1] |= (1 << 23) | (root_node & 0x3f) << 24; 1250 if (gap_count >= 0) 1251 fp->mode.ld[1] |= (1 << 22) | (gap_count & 0x3f) << 16; 1252 fp->mode.ld[2] = ~fp->mode.ld[1]; 1253/* XXX Dangerous, how to pass PHY packet to device driver */ 1254 fp->mode.common.tcode |= FWTCODE_PHY; 1255 1256 if (firewire_debug) 1257 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n", 1258 __func__, root_node, gap_count); 1259 fw_asyreq(fc, -1, xfer); 1260} 1261 1262/* 1263 * Dump self ID. 1264 */ 1265static void 1266fw_print_sid(uint32_t sid) 1267{ 1268 union fw_self_id *s; 1269 s = (union fw_self_id *) &sid; 1270 if (s->p0.sequel) { 1271 if (s->p1.sequence_num == FW_SELF_ID_PAGE0) { 1272 printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d" 1273 "p8:%d p9:%d p10:%d\n", 1274 s->p1.phy_id, s->p1.port3, s->p1.port4, 1275 s->p1.port5, s->p1.port6, s->p1.port7, 1276 s->p1.port8, s->p1.port9, s->p1.port10); 1277 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) { 1278 printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n", 1279 s->p2.phy_id, s->p2.port11, s->p2.port12, 1280 s->p2.port13, s->p2.port14, s->p2.port15); 1281 } else { 1282 printf("node:%d Unknown Self ID Page number %d\n", 1283 s->p1.phy_id, s->p1.sequence_num); 1284 } 1285 } else { 1286 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d" 1287 " p0:%d p1:%d p2:%d i:%d m:%d\n", 1288 s->p0.phy_id, s->p0.link_active, s->p0.gap_count, 1289 s->p0.phy_speed, s->p0.contender, 1290 s->p0.power_class, s->p0.port0, s->p0.port1, 1291 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets); 1292 } 1293} 1294 1295/* 1296 * To receive self ID. 1297 */ 1298void fw_sidrcv(struct firewire_comm *fc, uint32_t *sid, u_int len) 1299{ 1300 uint32_t *p; 1301 union fw_self_id *self_id; 1302 u_int i, j, node, c_port = 0, i_branch = 0; 1303 1304 fc->sid_cnt = len / (sizeof(uint32_t) * 2); 1305 fc->max_node = fc->nodeid & 0x3f; 1306 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16; 1307 fc->status = FWBUSCYMELECT; 1308 fc->topology_map->crc_len = 2; 1309 fc->topology_map->generation++; 1310 fc->topology_map->self_id_count = 0; 1311 fc->topology_map->node_count= 0; 1312 fc->speed_map->generation++; 1313 fc->speed_map->crc_len = 1 + (64 * 64 + 3) / 4; 1314 self_id = &fc->topology_map->self_id[0]; 1315 for (i = 0; i < fc->sid_cnt; i++) { 1316 if (sid[1] != ~sid[0]) { 1317 device_printf(fc->bdev, 1318 "%s: ERROR invalid self-id packet\n", __func__); 1319 sid += 2; 1320 continue; 1321 } 1322 *self_id = *((union fw_self_id *)sid); 1323 fc->topology_map->crc_len++; 1324 if (self_id->p0.sequel == 0) { 1325 fc->topology_map->node_count++; 1326 c_port = 0; 1327 if (firewire_debug) 1328 fw_print_sid(sid[0]); 1329 node = self_id->p0.phy_id; 1330 if (fc->max_node < node) 1331 fc->max_node = self_id->p0.phy_id; 1332 /* XXX I'm not sure this is the right speed_map */ 1333 fc->speed_map->speed[node][node] = 1334 self_id->p0.phy_speed; 1335 for (j = 0; j < node; j++) { 1336 fc->speed_map->speed[j][node] = 1337 fc->speed_map->speed[node][j] = 1338 min(fc->speed_map->speed[j][j], 1339 self_id->p0.phy_speed); 1340 } 1341 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) && 1342 (self_id->p0.link_active && self_id->p0.contender)) 1343 fc->irm = self_id->p0.phy_id; 1344 if (self_id->p0.port0 >= 0x2) 1345 c_port++; 1346 if (self_id->p0.port1 >= 0x2) 1347 c_port++; 1348 if (self_id->p0.port2 >= 0x2) 1349 c_port++; 1350 } 1351 if (c_port > 2) 1352 i_branch += (c_port - 2); 1353 sid += 2; 1354 self_id++; 1355 fc->topology_map->self_id_count++; 1356 } 1357 /* CRC */ 1358 fc->topology_map->crc = fw_crc16( 1359 (uint32_t *)&fc->topology_map->generation, 1360 fc->topology_map->crc_len * 4); 1361 fc->speed_map->crc = fw_crc16( 1362 (uint32_t *)&fc->speed_map->generation, 1363 fc->speed_map->crc_len * 4); 1364 /* byteswap and copy to CSR */ 1365 p = (uint32_t *)fc->topology_map; 1366 for (i = 0; i <= fc->topology_map->crc_len; i++) 1367 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++); 1368 p = (uint32_t *)fc->speed_map; 1369 CSRARC(fc, SPED_MAP) = htonl(*p++); 1370 CSRARC(fc, SPED_MAP + 4) = htonl(*p++); 1371 /* don't byte-swap uint8_t array */ 1372 bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1) * 4); 1373 1374 fc->max_hop = fc->max_node - i_branch; 1375 device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n", 1376 fc->max_node + 1, fc->max_hop, 1377 (fc->irm == -1) ? "Not IRM capable" : "cable IRM", 1378 fc->irm, (fc->irm == fc->nodeid) ? " (me) " : ""); 1379 1380 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) { 1381 if (fc->irm == fc->nodeid) { 1382 fc->status = FWBUSMGRDONE; 1383 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm); 1384 fw_bmr(fc); 1385 } else { 1386 fc->status = FWBUSMGRELECT; 1387 callout_reset(&fc->bmr_callout, hz / 8, 1388 fw_try_bmr, fc); 1389 } 1390 } else 1391 fc->status = FWBUSMGRDONE; 1392 1393 callout_reset(&fc->busprobe_callout, hz / 4, fw_bus_probe, fc); 1394} 1395 1396/* 1397 * To probe devices on the IEEE1394 bus. 1398 */ 1399static void 1400fw_bus_probe(void *arg) 1401{ 1402 struct firewire_comm *fc; 1403 struct fw_device *fwdev; 1404 int s; 1405 1406 s = splfw(); 1407 fc = arg; 1408 fc->status = FWBUSEXPLORE; 1409 1410 /* Invalidate all devices, just after bus reset. */ 1411 if (firewire_debug) 1412 device_printf(fc->bdev, "%s:" 1413 "iterate and invalidate all nodes\n", 1414 __func__); 1415 STAILQ_FOREACH(fwdev, &fc->devices, link) 1416 if (fwdev->status != FWDEVINVAL) { 1417 fwdev->status = FWDEVINVAL; 1418 fwdev->rcnt = 0; 1419 if (firewire_debug) 1420 device_printf(fc->bdev, "%s:" 1421 "Invalidate Dev ID: %08x%08x\n", 1422 __func__, fwdev->eui.hi, fwdev->eui.lo); 1423 } else { 1424 if (firewire_debug) 1425 device_printf(fc->bdev, "%s:" 1426 "Dev ID: %08x%08x already invalid\n", 1427 __func__, fwdev->eui.hi, fwdev->eui.lo); 1428 } 1429 splx(s); 1430 1431 wakeup(fc); 1432} 1433 1434static int 1435fw_explore_read_quads(struct fw_device *fwdev, int offset, 1436 uint32_t *quad, int length) 1437{ 1438 struct fw_xfer *xfer; 1439 uint32_t tmp; 1440 int i, error; 1441 1442 for (i = 0; i < length; i++, offset += sizeof(uint32_t)) { 1443 xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff, 1444 0xf0000000 | offset, &tmp, fw_xferwake); 1445 if (xfer == NULL) 1446 return (-1); 1447 fw_xferwait(xfer); 1448 1449 if (xfer->resp == 0) 1450 quad[i] = ntohl(tmp); 1451 1452 error = xfer->resp; 1453 fw_xfer_free(xfer); 1454 if (error) 1455 return (error); 1456 } 1457 return (0); 1458} 1459 1460 1461static int 1462fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur) 1463{ 1464 int err, i, off; 1465 struct csrdirectory *dir; 1466 struct csrreg *reg; 1467 1468 dir = (struct csrdirectory *)&fwdev->csrrom[offset / sizeof(uint32_t)]; 1469 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1470 (uint32_t *)dir, 1); 1471 if (err) 1472 return (-1); 1473 1474 offset += sizeof(uint32_t); 1475 reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)]; 1476 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1477 (uint32_t *)reg, dir->crc_len); 1478 if (err) 1479 return (-1); 1480 1481 /* XXX check CRC */ 1482 1483 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1); 1484 if (fwdev->rommax < off) 1485 fwdev->rommax = off; 1486 1487 if (recur == 0) 1488 return (0); 1489 1490 for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) { 1491 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D) 1492 recur = 1; 1493 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L) 1494 recur = 0; 1495 else 1496 continue; 1497 1498 off = offset + reg[i].val * sizeof(uint32_t); 1499 if (off > CROMSIZE) { 1500 printf("%s: invalid offset %d\n", __FUNCTION__, off); 1501 return (-1); 1502 } 1503 err = fw_explore_csrblock(fwdev, off, recur); 1504 if (err) 1505 return (-1); 1506 } 1507 return (0); 1508} 1509 1510static int 1511fw_explore_node(struct fw_device *dfwdev) 1512{ 1513 struct firewire_comm *fc; 1514 struct fw_device *fwdev, *pfwdev, *tfwdev; 1515 uint32_t *csr; 1516 struct csrhdr *hdr; 1517 struct bus_info *binfo; 1518 int err, node; 1519 uint32_t speed_test = 0; 1520 1521 fc = dfwdev->fc; 1522 csr = dfwdev->csrrom; 1523 node = dfwdev->dst; 1524 1525 /* First quad */ 1526 err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1); 1527 if (err) { 1528 dfwdev->status = FWDEVINVAL; 1529 return (-1); 1530 } 1531 hdr = (struct csrhdr *)&csr[0]; 1532 if (hdr->info_len != 4) { 1533 if (firewire_debug) 1534 device_printf(fc->bdev, 1535 "%s: node%d: wrong bus info len(%d)\n", 1536 __func__, node, hdr->info_len); 1537 dfwdev->status = FWDEVINVAL; 1538 return (-1); 1539 } 1540 1541 /* bus info */ 1542 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); 1543 if (err) { 1544 dfwdev->status = FWDEVINVAL; 1545 return (-1); 1546 } 1547 binfo = (struct bus_info *)&csr[1]; 1548 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { 1549 dfwdev->status = FWDEVINVAL; 1550 return (-1); 1551 } 1552 1553 if (firewire_debug) 1554 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n" 1555 "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) " 1556 "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) " 1557 "generation(%d) link_spd(%d)\n", 1558 __func__, node, 1559 binfo->irmc, binfo->cmc, binfo->isc, 1560 binfo->bmc, binfo->pmc, binfo->cyc_clk_acc, 1561 binfo->max_rec, binfo->max_rom, 1562 binfo->generation, binfo->link_spd); 1563 1564 STAILQ_FOREACH(fwdev, &fc->devices, link) 1565 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) 1566 break; 1567 if (fwdev == NULL) { 1568 /* new device */ 1569 fwdev = malloc(sizeof(struct fw_device), M_FW, 1570 M_NOWAIT | M_ZERO); 1571 if (fwdev == NULL) { 1572 device_printf(fc->bdev, "%s: node%d: no memory\n", 1573 __func__, node); 1574 return (-1); 1575 } 1576 fwdev->fc = fc; 1577 fwdev->eui = binfo->eui64; 1578 fwdev->dst = dfwdev->dst; 1579 fwdev->maxrec = dfwdev->maxrec; 1580 fwdev->status = dfwdev->status; 1581 1582 /* 1583 * Pre-1394a-2000 didn't have link_spd in 1584 * the Bus Info block, so try and use the 1585 * speed map value. 1586 * 1394a-2000 compliant devices only use 1587 * the Bus Info Block link spd value, so 1588 * ignore the speed map altogether. SWB 1589 */ 1590 if (binfo->link_spd == FWSPD_S100 /* 0 */) { 1591 device_printf(fc->bdev, "%s: " 1592 "Pre 1394a-2000 detected\n", __func__); 1593 fwdev->speed = fc->speed_map->speed[fc->nodeid][node]; 1594 } else 1595 fwdev->speed = binfo->link_spd; 1596 /* 1597 * Test this speed with a read to the CSRROM. 1598 * If it fails, slow down the speed and retry. 1599 */ 1600 while (fwdev->speed > FWSPD_S100 /* 0 */) { 1601 err = fw_explore_read_quads(fwdev, CSRROMOFF, 1602 &speed_test, 1); 1603 if (err) { 1604 device_printf(fc->bdev, 1605 "%s: fwdev->speed(%s) decremented due to negotiation\n", 1606 __func__, linkspeed[fwdev->speed]); 1607 fwdev->speed--; 1608 } else 1609 break; 1610 1611 } 1612 1613 /* 1614 * If the fwdev is not found in the 1615 * fc->devices TAILQ, then we will add it. 1616 */ 1617 pfwdev = NULL; 1618 STAILQ_FOREACH(tfwdev, &fc->devices, link) { 1619 if (tfwdev->eui.hi > fwdev->eui.hi || 1620 (tfwdev->eui.hi == fwdev->eui.hi && 1621 tfwdev->eui.lo > fwdev->eui.lo)) 1622 break; 1623 pfwdev = tfwdev; 1624 } 1625 if (pfwdev == NULL) 1626 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link); 1627 else 1628 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link); 1629 } else { 1630 fwdev->dst = node; 1631 fwdev->status = FWDEVINIT; 1632 /* unchanged ? */ 1633 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) { 1634 if (firewire_debug) 1635 device_printf(fc->dev, 1636 "node%d: crom unchanged\n", node); 1637 return (0); 1638 } 1639 } 1640 1641 bzero(&fwdev->csrrom[0], CROMSIZE); 1642 1643 /* copy first quad and bus info block */ 1644 bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5); 1645 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; 1646 1647 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ 1648 1649 if (err) { 1650 if (firewire_debug) 1651 device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n", 1652 __func__, err); 1653 fwdev->status = FWDEVINVAL; 1654 fwdev->csrrom[0] = 0; 1655 } 1656 return (err); 1657 1658} 1659 1660/* 1661 * Find the self_id packet for a node, ignoring sequels. 1662 */ 1663static union fw_self_id * 1664fw_find_self_id(struct firewire_comm *fc, int node) 1665{ 1666 uint32_t i; 1667 union fw_self_id *s; 1668 1669 for (i = 0; i < fc->topology_map->self_id_count; i++) { 1670 s = &fc->topology_map->self_id[i]; 1671 if (s->p0.sequel) 1672 continue; 1673 if (s->p0.phy_id == node) 1674 return s; 1675 } 1676 return 0; 1677} 1678 1679static void 1680fw_explore(struct firewire_comm *fc) 1681{ 1682 int node, err, s, i, todo, todo2, trys; 1683 char nodes[63]; 1684 struct fw_device dfwdev; 1685 union fw_self_id *fwsid; 1686 1687 todo = 0; 1688 /* setup dummy fwdev */ 1689 dfwdev.fc = fc; 1690 dfwdev.speed = 0; 1691 dfwdev.maxrec = 8; /* 512 */ 1692 dfwdev.status = FWDEVINIT; 1693 1694 for (node = 0; node <= fc->max_node; node++) { 1695 /* We don't probe myself and linkdown nodes */ 1696 if (node == fc->nodeid) { 1697 if (firewire_debug) 1698 device_printf(fc->bdev, "%s:" 1699 "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n", 1700 __func__, node, fc->nodeid, fc->max_node); 1701 continue; 1702 } else if (firewire_debug) { 1703 device_printf(fc->bdev, "%s:" 1704 "node(%d) fc->max_node(%d) found\n", 1705 __func__, node, fc->max_node); 1706 } 1707 fwsid = fw_find_self_id(fc, node); 1708 if (!fwsid || !fwsid->p0.link_active) { 1709 if (firewire_debug) 1710 device_printf(fc->bdev, 1711 "%s: node%d: link down\n", 1712 __func__, node); 1713 continue; 1714 } 1715 nodes[todo++] = node; 1716 } 1717 1718 s = splfw(); 1719 for (trys = 0; todo > 0 && trys < 3; trys++) { 1720 todo2 = 0; 1721 for (i = 0; i < todo; i++) { 1722 dfwdev.dst = nodes[i]; 1723 err = fw_explore_node(&dfwdev); 1724 if (err) 1725 nodes[todo2++] = nodes[i]; 1726 if (firewire_debug) 1727 device_printf(fc->bdev, 1728 "%s: node %d, err = %d\n", 1729 __func__, node, err); 1730 } 1731 todo = todo2; 1732 } 1733 splx(s); 1734} 1735 1736static void 1737fw_bus_probe_thread(void *arg) 1738{ 1739 struct firewire_comm *fc; 1740 1741 fc = arg; 1742 1743 mtx_lock(&fc->wait_lock); 1744 while (fc->status != FWBUSDETACH) { 1745 if (fc->status == FWBUSEXPLORE) { 1746 mtx_unlock(&fc->wait_lock); 1747 fw_explore(fc); 1748 fc->status = FWBUSEXPDONE; 1749 if (firewire_debug) 1750 printf("bus_explore done\n"); 1751 fw_attach_dev(fc); 1752 mtx_lock(&fc->wait_lock); 1753 } 1754 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0); 1755 } 1756 mtx_unlock(&fc->wait_lock); 1757 kproc_exit(0); 1758} 1759 1760/* 1761 * To attach sub-devices layer onto IEEE1394 bus. 1762 */ 1763static void 1764fw_attach_dev(struct firewire_comm *fc) 1765{ 1766 struct fw_device *fwdev, *next; 1767 int i, err; 1768 device_t *devlistp; 1769 int devcnt; 1770 struct firewire_dev_comm *fdc; 1771 1772 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { 1773 next = STAILQ_NEXT(fwdev, link); 1774 if (fwdev->status == FWDEVINIT) { 1775 fwdev->status = FWDEVATTACHED; 1776 } else if (fwdev->status == FWDEVINVAL) { 1777 fwdev->rcnt++; 1778 if (firewire_debug) 1779 device_printf(fc->bdev, "%s:" 1780 "fwdev->rcnt(%d), hold_count(%d)\n", 1781 __func__, fwdev->rcnt, hold_count); 1782 if (fwdev->rcnt > hold_count) { 1783 /* 1784 * Remove devices which have not been seen 1785 * for a while. 1786 */ 1787 STAILQ_REMOVE(&fc->devices, fwdev, fw_device, 1788 link); 1789 free(fwdev, M_FW); 1790 } 1791 } 1792 } 1793 1794 err = device_get_children(fc->bdev, &devlistp, &devcnt); 1795 if (err == 0) { 1796 for (i = 0; i < devcnt; i++) { 1797 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 1798 fdc = device_get_softc(devlistp[i]); 1799 if (fdc->post_explore != NULL) 1800 fdc->post_explore(fdc); 1801 } 1802 } 1803 free(devlistp, M_TEMP); 1804 } 1805 1806 return; 1807} 1808 1809/* 1810 * To allocate unique transaction label. 1811 */ 1812static int 1813fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer) 1814{ 1815 u_int dst, new_tlabel; 1816 struct fw_xfer *txfer; 1817 int s; 1818 1819 dst = xfer->send.hdr.mode.hdr.dst & 0x3f; 1820 s = splfw(); 1821 mtx_lock(&fc->tlabel_lock); 1822 new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f; 1823 STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel) 1824 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst) 1825 break; 1826 if (txfer == NULL) { 1827 fc->last_tlabel[dst] = new_tlabel; 1828 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel); 1829 mtx_unlock(&fc->tlabel_lock); 1830 splx(s); 1831 xfer->tl = new_tlabel; 1832 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2; 1833 if (firewire_debug > 1) 1834 printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel); 1835 return (new_tlabel); 1836 } 1837 mtx_unlock(&fc->tlabel_lock); 1838 splx(s); 1839 1840 if (firewire_debug > 1) 1841 printf("fw_get_tlabel: no free tlabel\n"); 1842 return (-1); 1843} 1844 1845static void 1846fw_rcv_copy(struct fw_rcv_buf *rb) 1847{ 1848 struct fw_pkt *pkt; 1849 u_char *p; 1850 struct tcode_info *tinfo; 1851 u_int res, i, len, plen; 1852 1853 rb->xfer->recv.spd = rb->spd; 1854 1855 pkt = (struct fw_pkt *)rb->vec->iov_base; 1856 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode]; 1857 1858 /* Copy header */ 1859 p = (u_char *)&rb->xfer->recv.hdr; 1860 bcopy(rb->vec->iov_base, p, tinfo->hdr_len); 1861 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len; 1862 rb->vec->iov_len -= tinfo->hdr_len; 1863 1864 /* Copy payload */ 1865 p = (u_char *)rb->xfer->recv.payload; 1866 res = rb->xfer->recv.pay_len; 1867 1868 /* special handling for RRESQ */ 1869 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ && 1870 p != NULL && res >= sizeof(uint32_t)) { 1871 *(uint32_t *)p = pkt->mode.rresq.data; 1872 rb->xfer->recv.pay_len = sizeof(uint32_t); 1873 return; 1874 } 1875 1876 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0) 1877 return; 1878 1879 plen = pkt->mode.rresb.len; 1880 1881 for (i = 0; i < rb->nvec; i++, rb->vec++) { 1882 len = MIN(rb->vec->iov_len, plen); 1883 if (res < len) { 1884 device_printf(rb->fc->bdev, "%s:" 1885 " rcv buffer(%d) is %d bytes short.\n", 1886 __func__, rb->xfer->recv.pay_len, len - res); 1887 len = res; 1888 } 1889 bcopy(rb->vec->iov_base, p, len); 1890 p += len; 1891 res -= len; 1892 plen -= len; 1893 if (res == 0 || plen == 0) 1894 break; 1895 } 1896 rb->xfer->recv.pay_len -= res; 1897} 1898 1899/* 1900 * Generic packet receiving process. 1901 */ 1902void 1903fw_rcv(struct fw_rcv_buf *rb) 1904{ 1905 struct fw_pkt *fp, *resfp; 1906 struct fw_bind *bind; 1907 int tcode; 1908 int i, len, oldstate; 1909#if 0 1910 { 1911 uint32_t *qld; 1912 int i; 1913 qld = (uint32_t *)buf; 1914 printf("spd %d len:%d\n", spd, len); 1915 for (i = 0; i <= len && i < 32; i+= 4) { 1916 printf("0x%08x ", ntohl(qld[i/4])); 1917 if ((i % 16) == 15) printf("\n"); 1918 } 1919 if ((i % 16) != 15) printf("\n"); 1920 } 1921#endif 1922 fp = (struct fw_pkt *)rb->vec[0].iov_base; 1923 tcode = fp->mode.common.tcode; 1924 switch (tcode) { 1925 case FWTCODE_WRES: 1926 case FWTCODE_RRESQ: 1927 case FWTCODE_RRESB: 1928 case FWTCODE_LRES: 1929 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1930 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode); 1931 if (rb->xfer == NULL) { 1932 device_printf(rb->fc->bdev, "%s: unknown response " 1933 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n", 1934 __func__, 1935 tcode_str[tcode], tcode, 1936 fp->mode.hdr.src, 1937 fp->mode.hdr.tlrt >> 2, 1938 fp->mode.hdr.tlrt & 3, 1939 fp->mode.rresq.data); 1940#if 0 1941 printf("try ad-hoc work around!!\n"); 1942 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1943 (fp->mode.hdr.tlrt >> 2)^3); 1944 if (rb->xfer == NULL) { 1945 printf("no use...\n"); 1946 return; 1947 } 1948#else 1949 return; 1950#endif 1951 } 1952 fw_rcv_copy(rb); 1953 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP) 1954 rb->xfer->resp = EIO; 1955 else 1956 rb->xfer->resp = 0; 1957 /* make sure the packet is drained in AT queue */ 1958 oldstate = rb->xfer->flag; 1959 rb->xfer->flag = FWXF_RCVD; 1960 switch (oldstate) { 1961 case FWXF_SENT: 1962 fw_xfer_done(rb->xfer); 1963 break; 1964 case FWXF_START: 1965#if 0 1966 if (firewire_debug) 1967 printf("not sent yet tl=%x\n", rb->xfer->tl); 1968#endif 1969 break; 1970 default: 1971 device_printf(rb->fc->bdev, "%s: " 1972 "unexpected flag 0x%02x\n", __func__, 1973 rb->xfer->flag); 1974 } 1975 return; 1976 case FWTCODE_WREQQ: 1977 case FWTCODE_WREQB: 1978 case FWTCODE_RREQQ: 1979 case FWTCODE_RREQB: 1980 case FWTCODE_LREQ: 1981 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi, 1982 fp->mode.rreqq.dest_lo); 1983 if (bind == NULL) { 1984 device_printf(rb->fc->bdev, "%s: " 1985 "Unknown service addr 0x%04x:0x%08x %s(%x)" 1986 " src=0x%x data=%x\n", 1987 __func__, 1988 fp->mode.wreqq.dest_hi, 1989 fp->mode.wreqq.dest_lo, 1990 tcode_str[tcode], tcode, 1991 fp->mode.hdr.src, 1992 ntohl(fp->mode.wreqq.data)); 1993 1994 if (rb->fc->status == FWBUSINIT) { 1995 device_printf(rb->fc->bdev, 1996 "%s: cannot respond(bus reset)!\n", 1997 __func__); 1998 return; 1999 } 2000 rb->xfer = fw_xfer_alloc(M_FWXFER); 2001 if (rb->xfer == NULL) { 2002 return; 2003 } 2004 rb->xfer->send.spd = rb->spd; 2005 rb->xfer->send.pay_len = 0; 2006 resfp = &rb->xfer->send.hdr; 2007 switch (tcode) { 2008 case FWTCODE_WREQQ: 2009 case FWTCODE_WREQB: 2010 resfp->mode.hdr.tcode = FWTCODE_WRES; 2011 break; 2012 case FWTCODE_RREQQ: 2013 resfp->mode.hdr.tcode = FWTCODE_RRESQ; 2014 break; 2015 case FWTCODE_RREQB: 2016 resfp->mode.hdr.tcode = FWTCODE_RRESB; 2017 break; 2018 case FWTCODE_LREQ: 2019 resfp->mode.hdr.tcode = FWTCODE_LRES; 2020 break; 2021 } 2022 resfp->mode.hdr.dst = fp->mode.hdr.src; 2023 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt; 2024 resfp->mode.hdr.pri = fp->mode.hdr.pri; 2025 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR; 2026 resfp->mode.rresb.extcode = 0; 2027 resfp->mode.rresb.len = 0; 2028/* 2029 rb->xfer->hand = fw_xferwake; 2030*/ 2031 rb->xfer->hand = fw_xfer_free; 2032 if (fw_asyreq(rb->fc, -1, rb->xfer)) 2033 fw_xfer_free(rb->xfer); 2034 return; 2035 } 2036 len = 0; 2037 for (i = 0; i < rb->nvec; i++) 2038 len += rb->vec[i].iov_len; 2039 rb->xfer = STAILQ_FIRST(&bind->xferlist); 2040 if (rb->xfer == NULL) { 2041 device_printf(rb->fc->bdev, "%s: " 2042 "Discard a packet for this bind.\n", __func__); 2043 return; 2044 } 2045 STAILQ_REMOVE_HEAD(&bind->xferlist, link); 2046 fw_rcv_copy(rb); 2047 rb->xfer->hand(rb->xfer); 2048 return; 2049#if 0 /* shouldn't happen ?? or for GASP */ 2050 case FWTCODE_STREAM: 2051 { 2052 struct fw_xferq *xferq; 2053 2054 xferq = rb->fc->ir[sub]; 2055#if 0 2056 printf("stream rcv dma %d len %d off %d spd %d\n", 2057 sub, len, off, spd); 2058#endif 2059 if (xferq->queued >= xferq->maxq) { 2060 printf("receive queue is full\n"); 2061 return; 2062 } 2063 /* XXX get xfer from xfer queue, we don't need copy for 2064 per packet mode */ 2065 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */ 2066 vec[0].iov_len); 2067 if (rb->xfer == NULL) 2068 return; 2069 fw_rcv_copy(rb) 2070 s = splfw(); 2071 xferq->queued++; 2072 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link); 2073 splx(s); 2074 sc = device_get_softc(rb->fc->bdev); 2075 if (SEL_WAITING(&xferq->rsel)) 2076 selwakeuppri(&xferq->rsel, FWPRI); 2077 if (xferq->flag & FWXFERQ_WAKEUP) { 2078 xferq->flag &= ~FWXFERQ_WAKEUP; 2079 wakeup((caddr_t)xferq); 2080 } 2081 if (xferq->flag & FWXFERQ_HANDLER) { 2082 xferq->hand(xferq); 2083 } 2084 return; 2085 break; 2086 } 2087#endif 2088 default: 2089 device_printf(rb->fc->bdev,"%s: unknown tcode %d\n", 2090 __func__, tcode); 2091 break; 2092 } 2093} 2094 2095/* 2096 * Post process for Bus Manager election process. 2097 */ 2098static void 2099fw_try_bmr_callback(struct fw_xfer *xfer) 2100{ 2101 struct firewire_comm *fc; 2102 int bmr; 2103 2104 if (xfer == NULL) 2105 return; 2106 fc = xfer->fc; 2107 if (xfer->resp != 0) 2108 goto error; 2109 if (xfer->recv.payload == NULL) 2110 goto error; 2111 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE) 2112 goto error; 2113 2114 bmr = ntohl(xfer->recv.payload[0]); 2115 if (bmr == 0x3f) 2116 bmr = fc->nodeid; 2117 2118 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f); 2119 fw_xfer_free_buf(xfer); 2120 fw_bmr(fc); 2121 return; 2122 2123error: 2124 device_printf(fc->bdev, "bus manager election failed\n"); 2125 fw_xfer_free_buf(xfer); 2126} 2127 2128 2129/* 2130 * To candidate Bus Manager election process. 2131 */ 2132static void 2133fw_try_bmr(void *arg) 2134{ 2135 struct fw_xfer *xfer; 2136 struct firewire_comm *fc = arg; 2137 struct fw_pkt *fp; 2138 int err = 0; 2139 2140 xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4); 2141 if (xfer == NULL) 2142 return; 2143 xfer->send.spd = 0; 2144 fc->status = FWBUSMGRELECT; 2145 2146 fp = &xfer->send.hdr; 2147 fp->mode.lreq.dest_hi = 0xffff; 2148 fp->mode.lreq.tlrt = 0; 2149 fp->mode.lreq.tcode = FWTCODE_LREQ; 2150 fp->mode.lreq.pri = 0; 2151 fp->mode.lreq.src = 0; 2152 fp->mode.lreq.len = 8; 2153 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP; 2154 fp->mode.lreq.dst = FWLOCALBUS | fc->irm; 2155 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID; 2156 xfer->send.payload[0] = htonl(0x3f); 2157 xfer->send.payload[1] = htonl(fc->nodeid); 2158 xfer->hand = fw_try_bmr_callback; 2159 2160 err = fw_asyreq(fc, -1, xfer); 2161 if (err) { 2162 fw_xfer_free_buf(xfer); 2163 return; 2164 } 2165 return; 2166} 2167 2168#ifdef FW_VMACCESS 2169/* 2170 * Software implementation for physical memory block access. 2171 * XXX:Too slow, useful for debug purpose only. 2172 */ 2173static void 2174fw_vmaccess(struct fw_xfer *xfer) 2175{ 2176 struct fw_pkt *rfp, *sfp = NULL; 2177 uint32_t *ld = (uint32_t *)xfer->recv.buf; 2178 2179 printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n", 2180 xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), 2181 ntohl(ld[3])); 2182 printf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]), 2183 ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7])); 2184 if (xfer->resp != 0) { 2185 fw_xfer_free(xfer); 2186 return; 2187 } 2188 if (xfer->recv.buf == NULL) { 2189 fw_xfer_free(xfer); 2190 return; 2191 } 2192 rfp = (struct fw_pkt *)xfer->recv.buf; 2193 switch (rfp->mode.hdr.tcode) { 2194 /* XXX need fix for 64bit arch */ 2195 case FWTCODE_WREQB: 2196 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2197 xfer->send.len = 12; 2198 sfp = (struct fw_pkt *)xfer->send.buf; 2199 bcopy(rfp->mode.wreqb.payload, 2200 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo),s 2201 ntohs(rfp->mode.wreqb.len)); 2202 sfp->mode.wres.tcode = FWTCODE_WRES; 2203 sfp->mode.wres.rtcode = 0; 2204 break; 2205 case FWTCODE_WREQQ: 2206 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2207 xfer->send.len = 12; 2208 sfp->mode.wres.tcode = FWTCODE_WRES; 2209 *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = 2210 rfp->mode.wreqq.data; 2211 sfp->mode.wres.rtcode = 0; 2212 break; 2213 case FWTCODE_RREQB: 2214 xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, 2215 M_FW, M_NOWAIT); 2216 xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len); 2217 sfp = (struct fw_pkt *)xfer->send.buf; 2218 bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo), 2219 sfp->mode.rresb.payload, 2220 ntohs(rfp->mode.rreqb.len)); 2221 sfp->mode.rresb.tcode = FWTCODE_RRESB; 2222 sfp->mode.rresb.len = rfp->mode.rreqb.len; 2223 sfp->mode.rresb.rtcode = 0; 2224 sfp->mode.rresb.extcode = 0; 2225 break; 2226 case FWTCODE_RREQQ: 2227 xfer->send.buf = malloc(16, M_FW, M_NOWAIT); 2228 xfer->send.len = 16; 2229 sfp = (struct fw_pkt *)xfer->send.buf; 2230 sfp->mode.rresq.data = 2231 *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo)); 2232 sfp->mode.wres.tcode = FWTCODE_RRESQ; 2233 sfp->mode.rresb.rtcode = 0; 2234 break; 2235 default: 2236 fw_xfer_free(xfer); 2237 return; 2238 } 2239 sfp->mode.hdr.dst = rfp->mode.hdr.src; 2240 xfer->dst = ntohs(rfp->mode.hdr.src); 2241 xfer->hand = fw_xfer_free; 2242 2243 sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt; 2244 sfp->mode.hdr.pri = 0; 2245 2246 fw_asyreq(xfer->fc, -1, xfer); 2247/**/ 2248 return; 2249} 2250#endif 2251 2252/* 2253 * CRC16 check-sum for IEEE1394 register blocks. 2254 */ 2255uint16_t 2256fw_crc16(uint32_t *ptr, uint32_t len) 2257{ 2258 uint32_t i, sum, crc = 0; 2259 int shift; 2260 len = (len + 3) & ~3; 2261 for (i = 0; i < len; i += 4) { 2262 for (shift = 28; shift >= 0; shift -= 4) { 2263 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf; 2264 crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum; 2265 } 2266 crc &= 0xffff; 2267 } 2268 return ((uint16_t) crc); 2269} 2270 2271/* 2272 * Find the root node, if it is not 2273 * Cycle Master Capable, then we should 2274 * override this and become the Cycle 2275 * Master 2276 */ 2277static int 2278fw_bmr(struct firewire_comm *fc) 2279{ 2280 struct fw_device fwdev; 2281 union fw_self_id *self_id; 2282 int cmstr; 2283 uint32_t quad; 2284 2285 /* Check to see if the current root node is cycle master capable */ 2286 self_id = fw_find_self_id(fc, fc->max_node); 2287 if (fc->max_node > 0) { 2288 /* XXX check cmc bit of businfo block rather than contender */ 2289 if (self_id->p0.link_active && self_id->p0.contender) 2290 cmstr = fc->max_node; 2291 else { 2292 device_printf(fc->bdev, 2293 "root node is not cycle master capable\n"); 2294 /* XXX shall we be the cycle master? */ 2295 cmstr = fc->nodeid; 2296 /* XXX need bus reset */ 2297 } 2298 } else 2299 cmstr = -1; 2300 2301 device_printf(fc->bdev, "bus manager %d %s\n", 2302 CSRARC(fc, BUS_MGR_ID), 2303 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : ""); 2304 if (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) { 2305 /* We are not the bus manager */ 2306 return (0); 2307 } 2308 2309 /* Optimize gapcount */ 2310 if (fc->max_hop <= MAX_GAPHOP) 2311 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]); 2312 /* If we are the cycle master, nothing to do */ 2313 if (cmstr == fc->nodeid || cmstr == -1) 2314 return 0; 2315 /* Bus probe has not finished, make dummy fwdev for cmstr */ 2316 bzero(&fwdev, sizeof(fwdev)); 2317 fwdev.fc = fc; 2318 fwdev.dst = cmstr; 2319 fwdev.speed = 0; 2320 fwdev.maxrec = 8; /* 512 */ 2321 fwdev.status = FWDEVINIT; 2322 /* Set cmstr bit on the cycle master */ 2323 quad = htonl(1 << 8); 2324 fwmem_write_quad(&fwdev, NULL, 0/*spd*/, 2325 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free); 2326 2327 return 0; 2328} 2329 2330int 2331fw_open_isodma(struct firewire_comm *fc, int tx) 2332{ 2333 struct fw_xferq **xferqa; 2334 struct fw_xferq *xferq; 2335 int i; 2336 2337 if (tx) 2338 xferqa = &fc->it[0]; 2339 else 2340 xferqa = &fc->ir[0]; 2341 2342 FW_GLOCK(fc); 2343 for (i = 0; i < fc->nisodma; i++) { 2344 xferq = xferqa[i]; 2345 if ((xferq->flag & FWXFERQ_OPEN) == 0) { 2346 xferq->flag |= FWXFERQ_OPEN; 2347 break; 2348 } 2349 } 2350 if (i == fc->nisodma) { 2351 printf("no free dma channel (tx=%d)\n", tx); 2352 i = -1; 2353 } 2354 FW_GUNLOCK(fc); 2355 return (i); 2356} 2357 2358static int 2359fw_modevent(module_t mode, int type, void *data) 2360{ 2361 int err = 0; 2362 static eventhandler_tag fwdev_ehtag = NULL; 2363 2364 switch (type) { 2365 case MOD_LOAD: 2366 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone, 2367 fwdev_clone, 0, 1000); 2368 break; 2369 case MOD_UNLOAD: 2370 if (fwdev_ehtag != NULL) 2371 EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag); 2372 break; 2373 case MOD_SHUTDOWN: 2374 break; 2375 default: 2376 return (EOPNOTSUPP); 2377 } 2378 return (err); 2379} 2380 2381 2382DRIVER_MODULE(firewire, fwohci, firewire_driver, firewire_devclass, 2383 fw_modevent,0); 2384MODULE_VERSION(firewire, 1); 2385