firewire.c revision 170425
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 * $FreeBSD: head/sys/dev/firewire/firewire.c 170425 2007-06-08 07:53:59Z simokawa $ 35 * 36 */ 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/types.h> 41 42#include <sys/kernel.h> 43#include <sys/module.h> 44#include <sys/malloc.h> 45#include <sys/conf.h> 46#include <sys/sysctl.h> 47#include <sys/kthread.h> 48 49#include <sys/kdb.h> 50 51#if defined(__DragonFly__) || __FreeBSD_version < 500000 52#include <machine/clock.h> /* for DELAY() */ 53#endif 54 55#include <sys/bus.h> /* used by smbus and newbus */ 56#include <machine/bus.h> 57 58#ifdef __DragonFly__ 59#include "firewire.h" 60#include "firewirereg.h" 61#include "fwmem.h" 62#include "iec13213.h" 63#include "iec68113.h" 64#else 65#include <dev/firewire/firewire.h> 66#include <dev/firewire/firewirereg.h> 67#include <dev/firewire/fwmem.h> 68#include <dev/firewire/iec13213.h> 69#include <dev/firewire/iec68113.h> 70#endif 71 72struct crom_src_buf { 73 struct crom_src src; 74 struct crom_chunk root; 75 struct crom_chunk vendor; 76 struct crom_chunk hw; 77}; 78 79int firewire_debug=0, try_bmr=1, hold_count=3; 80SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0, 81 "FireWire driver debug flag"); 82SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem"); 83SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0, 84 "Try to be a bus manager"); 85SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0, 86 "Number of count of bus resets for removing lost device information"); 87 88MALLOC_DEFINE(M_FW, "firewire", "FireWire"); 89MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire"); 90 91#define FW_MAXASYRTY 4 92 93devclass_t firewire_devclass; 94 95static void firewire_identify (driver_t *, device_t); 96static int firewire_probe (device_t); 97static int firewire_attach (device_t); 98static int firewire_detach (device_t); 99static int firewire_resume (device_t); 100static void firewire_xfer_timeout(void *, int); 101#if 0 102static int firewire_shutdown (device_t); 103#endif 104static device_t firewire_add_child (device_t, int, const char *, int); 105static void fw_try_bmr (void *); 106static void fw_try_bmr_callback (struct fw_xfer *); 107static void fw_asystart (struct fw_xfer *); 108static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *); 109static void fw_bus_probe (struct firewire_comm *); 110static void fw_attach_dev (struct firewire_comm *); 111static void fw_bus_probe_thread(void *); 112#ifdef FW_VMACCESS 113static void fw_vmaccess (struct fw_xfer *); 114#endif 115static int fw_bmr (struct firewire_comm *); 116static void fw_dump_hdr(struct fw_pkt *, char *); 117 118static device_method_t firewire_methods[] = { 119 /* Device interface */ 120 DEVMETHOD(device_identify, firewire_identify), 121 DEVMETHOD(device_probe, firewire_probe), 122 DEVMETHOD(device_attach, firewire_attach), 123 DEVMETHOD(device_detach, firewire_detach), 124 DEVMETHOD(device_suspend, bus_generic_suspend), 125 DEVMETHOD(device_resume, firewire_resume), 126 DEVMETHOD(device_shutdown, bus_generic_shutdown), 127 128 /* Bus interface */ 129 DEVMETHOD(bus_add_child, firewire_add_child), 130 DEVMETHOD(bus_print_child, bus_generic_print_child), 131 132 { 0, 0 } 133}; 134char *linkspeed[] = { 135 "S100", "S200", "S400", "S800", 136 "S1600", "S3200", "undef", "undef" 137}; 138 139static char *tcode_str[] = { 140 "WREQQ", "WREQB", "WRES", "undef", 141 "RREQQ", "RREQB", "RRESQ", "RRESB", 142 "CYCS", "LREQ", "STREAM", "LRES", 143 "undef", "undef", "PHY", "undef" 144}; 145 146/* IEEE-1394a Table C-2 Gap count as a function of hops*/ 147#define MAX_GAPHOP 15 148u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18, 149 21, 24, 26, 29, 32, 35, 37, 40}; 150 151static driver_t firewire_driver = { 152 "firewire", 153 firewire_methods, 154 sizeof(struct firewire_softc), 155}; 156 157/* 158 * Lookup fwdev by node id. 159 */ 160struct fw_device * 161fw_noderesolve_nodeid(struct firewire_comm *fc, int dst) 162{ 163 struct fw_device *fwdev; 164 int s; 165 166 s = splfw(); 167 STAILQ_FOREACH(fwdev, &fc->devices, link) 168 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL) 169 break; 170 splx(s); 171 172 return fwdev; 173} 174 175/* 176 * Lookup fwdev by EUI64. 177 */ 178struct fw_device * 179fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui) 180{ 181 struct fw_device *fwdev; 182 int s; 183 184 s = splfw(); 185 FW_GLOCK(fc); 186 STAILQ_FOREACH(fwdev, &fc->devices, link) 187 if (FW_EUI64_EQUAL(fwdev->eui, *eui)) 188 break; 189 FW_GUNLOCK(fc); 190 splx(s); 191 192 if(fwdev == NULL) return NULL; 193 if(fwdev->status == FWDEVINVAL) return NULL; 194 return fwdev; 195} 196 197/* 198 * Async. request procedure for userland application. 199 */ 200int 201fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer) 202{ 203 int err = 0; 204 struct fw_xferq *xferq; 205 int len; 206 struct fw_pkt *fp; 207 int tcode; 208 struct tcode_info *info; 209 210 if(xfer == NULL) return EINVAL; 211 if(xfer->hand == NULL){ 212 printf("hand == NULL\n"); 213 return EINVAL; 214 } 215 fp = &xfer->send.hdr; 216 217 tcode = fp->mode.common.tcode & 0xf; 218 info = &fc->tcode[tcode]; 219 if (info->flag == 0) { 220 printf("invalid tcode=%x\n", tcode); 221 return EINVAL; 222 } 223 224 /* XXX allow bus explore packets only after bus rest */ 225 if ((fc->status < FWBUSEXPLORE) && 226 ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) || 227 (fp->mode.rreqq.dest_lo < 0xf0000000) || 228 (fp->mode.rreqq.dest_lo >= 0xf0001000))) { 229 xfer->resp = EAGAIN; 230 xfer->flag = FWXF_BUSY; 231 return (EAGAIN); 232 } 233 234 if (info->flag & FWTI_REQ) 235 xferq = fc->atq; 236 else 237 xferq = fc->ats; 238 len = info->hdr_len; 239 if (xfer->send.pay_len > MAXREC(fc->maxrec)) { 240 printf("send.pay_len > maxrec\n"); 241 return EINVAL; 242 } 243 if (info->flag & FWTI_BLOCK_STR) 244 len = fp->mode.stream.len; 245 else if (info->flag & FWTI_BLOCK_ASY) 246 len = fp->mode.rresb.len; 247 else 248 len = 0; 249 if (len != xfer->send.pay_len){ 250 printf("len(%d) != send.pay_len(%d) %s(%x)\n", 251 len, xfer->send.pay_len, tcode_str[tcode], tcode); 252 return EINVAL; 253 } 254 255 if(xferq->start == NULL){ 256 printf("xferq->start == NULL\n"); 257 return EINVAL; 258 } 259 if(!(xferq->queued < xferq->maxq)){ 260 device_printf(fc->bdev, "Discard a packet (queued=%d)\n", 261 xferq->queued); 262 return EAGAIN; 263 } 264 265 xfer->tl = -1; 266 if (info->flag & FWTI_TLABEL) { 267 if (fw_get_tlabel(fc, xfer) < 0) 268 return EAGAIN; 269 } 270 271 xfer->resp = 0; 272 xfer->fc = fc; 273 xfer->q = xferq; 274 275 fw_asystart(xfer); 276 return err; 277} 278/* 279 * Wakeup blocked process. 280 */ 281void 282fw_xferwake(struct fw_xfer *xfer) 283{ 284 struct mtx *lock = &xfer->fc->wait_lock; 285 286 mtx_lock(lock); 287 xfer->flag |= FWXF_WAKE; 288 mtx_unlock(lock); 289 290 wakeup(xfer); 291 return; 292} 293 294int 295fw_xferwait(struct fw_xfer *xfer) 296{ 297 struct mtx *lock = &xfer->fc->wait_lock; 298 int err = 0; 299 300 mtx_lock(lock); 301 if ((xfer->flag & FWXF_WAKE) == 0) 302 err = msleep((void *)xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0); 303 mtx_unlock(lock); 304 305 return (err); 306} 307 308/* 309 * Async. request with given xfer structure. 310 */ 311static void 312fw_asystart(struct fw_xfer *xfer) 313{ 314 struct firewire_comm *fc = xfer->fc; 315 int s; 316 s = splfw(); 317 /* Protect from interrupt/timeout */ 318 FW_GLOCK(fc); 319 microtime(&xfer->tv); 320 xfer->flag = FWXF_INQ; 321 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); 322#if 0 323 xfer->q->queued ++; 324#endif 325 FW_GUNLOCK(fc); 326 splx(s); 327 /* XXX just queue for mbuf */ 328 if (xfer->mbuf == NULL) 329 xfer->q->start(fc); 330 return; 331} 332 333static void 334firewire_identify(driver_t *driver, device_t parent) 335{ 336 BUS_ADD_CHILD(parent, 0, "firewire", -1); 337} 338 339static int 340firewire_probe(device_t dev) 341{ 342 device_set_desc(dev, "IEEE1394(FireWire) bus"); 343 return (0); 344} 345 346static void 347firewire_xfer_timeout(void *arg, int pending) 348{ 349 struct firewire_comm *fc = (struct firewire_comm *)arg; 350 struct fw_xfer *xfer, *txfer; 351 struct timeval tv; 352 struct timeval split_timeout; 353 STAILQ_HEAD(, fw_xfer) xfer_timeout; 354 int i, s; 355 356 split_timeout.tv_sec = 0; 357 split_timeout.tv_usec = 200 * 1000; /* 200 msec */ 358 359 microtime(&tv); 360 timevalsub(&tv, &split_timeout); 361 STAILQ_INIT(&xfer_timeout); 362 363 s = splfw(); 364 FW_GLOCK(fc); 365 for (i = 0; i < 0x40; i ++) { 366 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 367 if (timevalcmp(&xfer->tv, &tv, >)) 368 /* the rests are newer than this */ 369 break; 370 if ((xfer->flag & FWXF_SENT) == 0) 371 /* not sent yet */ 372 break; 373 device_printf(fc->bdev, 374 "split transaction timeout: " 375 "tl=0x%x flag=0x%02x\n", i, xfer->flag); 376 fw_dump_hdr(&xfer->send.hdr, "send"); 377 xfer->resp = ETIMEDOUT; 378 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 379 STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel); 380 } 381 } 382 FW_GUNLOCK(fc); 383 splx(s); 384 fc->timeout(fc); 385 386 STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer) 387 xfer->hand(xfer); 388} 389 390#define WATCHDOG_HZ 10 391static void 392firewire_watchdog(void *arg) 393{ 394 struct firewire_comm *fc; 395 static int watchdog_clock = 0; 396 397 fc = (struct firewire_comm *)arg; 398 399 /* 400 * At boot stage, the device interrupt is disabled and 401 * We encounter a timeout easily. To avoid this, 402 * ignore clock interrupt for a while. 403 */ 404 if (watchdog_clock > WATCHDOG_HZ * 15) 405 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout); 406 else 407 watchdog_clock ++; 408 409 callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ, 410 (void *)firewire_watchdog, (void *)fc); 411} 412 413/* 414 * The attach routine. 415 */ 416static int 417firewire_attach(device_t dev) 418{ 419 int unit; 420 struct firewire_softc *sc = device_get_softc(dev); 421 device_t pa = device_get_parent(dev); 422 struct firewire_comm *fc; 423 424 fc = (struct firewire_comm *)device_get_softc(pa); 425 sc->fc = fc; 426 fc->status = FWBUSNOTREADY; 427 428 unit = device_get_unit(dev); 429 if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA; 430 431 fwdev_makedev(sc); 432 433 mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF); 434 CALLOUT_INIT(&fc->timeout_callout); 435 CALLOUT_INIT(&fc->bmr_callout); 436 CALLOUT_INIT(&fc->busprobe_callout); 437 TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, (void *)fc); 438 439 callout_reset(&sc->fc->timeout_callout, hz, 440 (void *)firewire_watchdog, (void *)sc->fc); 441 442 /* create thread */ 443 kthread_create(fw_bus_probe_thread, (void *)fc, &fc->probe_thread, 444 0, 0, "fw%d_probe", unit); 445 446 /* Locate our children */ 447 bus_generic_probe(dev); 448 449 /* launch attachement of the added children */ 450 bus_generic_attach(dev); 451 452 /* bus_reset */ 453 fw_busreset(fc, FWBUSNOTREADY); 454 fc->ibr(fc); 455 456 return 0; 457} 458 459/* 460 * Attach it as child. 461 */ 462static device_t 463firewire_add_child(device_t dev, int order, const char *name, int unit) 464{ 465 device_t child; 466 struct firewire_softc *sc; 467 468 sc = (struct firewire_softc *)device_get_softc(dev); 469 child = device_add_child(dev, name, unit); 470 if (child) { 471 device_set_ivars(child, sc->fc); 472 device_probe_and_attach(child); 473 } 474 475 return child; 476} 477 478static int 479firewire_resume(device_t dev) 480{ 481 struct firewire_softc *sc; 482 483 sc = (struct firewire_softc *)device_get_softc(dev); 484 sc->fc->status = FWBUSNOTREADY; 485 486 bus_generic_resume(dev); 487 488 return(0); 489} 490 491/* 492 * Dettach it. 493 */ 494static int 495firewire_detach(device_t dev) 496{ 497 struct firewire_softc *sc; 498 struct firewire_comm *fc; 499 struct fw_device *fwdev, *fwdev_next; 500 int err; 501 502 sc = (struct firewire_softc *)device_get_softc(dev); 503 fc = sc->fc; 504 mtx_lock(&fc->wait_lock); 505 fc->status = FWBUSDETACH; 506 wakeup(fc); 507 if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60)) 508 printf("firewire probe thread didn't die\n"); 509 mtx_unlock(&fc->wait_lock); 510 511 if ((err = fwdev_destroydev(sc)) != 0) 512 return err; 513 514 if ((err = bus_generic_detach(dev)) != 0) 515 return err; 516 517 callout_stop(&fc->timeout_callout); 518 callout_stop(&fc->bmr_callout); 519 callout_stop(&fc->busprobe_callout); 520 521 /* XXX xfree_free and untimeout on all xfers */ 522 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; 523 fwdev = fwdev_next) { 524 fwdev_next = STAILQ_NEXT(fwdev, link); 525 free(fwdev, M_FW); 526 } 527 free(fc->topology_map, M_FW); 528 free(fc->speed_map, M_FW); 529 free(fc->crom_src_buf, M_FW); 530 531 mtx_destroy(&fc->wait_lock); 532 return(0); 533} 534#if 0 535static int 536firewire_shutdown( device_t dev ) 537{ 538 return 0; 539} 540#endif 541 542 543static void 544fw_xferq_drain(struct fw_xferq *xferq) 545{ 546 struct fw_xfer *xfer; 547 548 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) { 549 STAILQ_REMOVE_HEAD(&xferq->q, link); 550#if 0 551 xferq->queued --; 552#endif 553 xfer->resp = EAGAIN; 554 xfer->flag = FWXF_SENTERR; 555 fw_xfer_done(xfer); 556 } 557} 558 559void 560fw_drain_txq(struct firewire_comm *fc) 561{ 562 struct fw_xfer *xfer, *txfer; 563 STAILQ_HEAD(, fw_xfer) xfer_drain; 564 int i; 565 566 STAILQ_INIT(&xfer_drain); 567 568 FW_GLOCK(fc); 569 fw_xferq_drain(fc->atq); 570 fw_xferq_drain(fc->ats); 571 for(i = 0; i < fc->nisodma; i++) 572 fw_xferq_drain(fc->it[i]); 573 574 for (i = 0; i < 0x40; i ++) 575 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 576 if (firewire_debug) 577 printf("tl=%d flag=%d\n", i, xfer->flag); 578 xfer->resp = EAGAIN; 579 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 580 STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel); 581 } 582 FW_GUNLOCK(fc); 583 584 STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer) 585 xfer->hand(xfer); 586} 587 588static void 589fw_reset_csr(struct firewire_comm *fc) 590{ 591 int i; 592 593 CSRARC(fc, STATE_CLEAR) 594 = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ; 595 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 596 CSRARC(fc, NODE_IDS) = 0x3f; 597 598 CSRARC(fc, TOPO_MAP + 8) = 0; 599 fc->irm = -1; 600 601 fc->max_node = -1; 602 603 for(i = 2; i < 0x100/4 - 2 ; i++){ 604 CSRARC(fc, SPED_MAP + i * 4) = 0; 605 } 606 CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ; 607 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 608 CSRARC(fc, RESET_START) = 0; 609 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0; 610 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19; 611 CSRARC(fc, CYCLE_TIME) = 0x0; 612 CSRARC(fc, BUS_TIME) = 0x0; 613 CSRARC(fc, BUS_MGR_ID) = 0x3f; 614 CSRARC(fc, BANDWIDTH_AV) = 4915; 615 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; 616 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; 617 CSRARC(fc, IP_CHANNELS) = (1 << 31); 618 619 CSRARC(fc, CONF_ROM) = 0x04 << 24; 620 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */ 621 CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 | 622 1 << 28 | 0xff << 16 | 0x09 << 8; 623 CSRARC(fc, CONF_ROM + 0xc) = 0; 624 625/* DV depend CSRs see blue book */ 626 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON; 627 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON; 628 629 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 ); 630 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 631} 632 633static void 634fw_init_crom(struct firewire_comm *fc) 635{ 636 struct crom_src *src; 637 638 fc->crom_src_buf = (struct crom_src_buf *) 639 malloc(sizeof(struct crom_src_buf), M_FW, M_WAITOK | M_ZERO); 640 if (fc->crom_src_buf == NULL) 641 return; 642 643 src = &fc->crom_src_buf->src; 644 bzero(src, sizeof(struct crom_src)); 645 646 /* BUS info sample */ 647 src->hdr.info_len = 4; 648 649 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394; 650 651 src->businfo.irmc = 1; 652 src->businfo.cmc = 1; 653 src->businfo.isc = 1; 654 src->businfo.bmc = 1; 655 src->businfo.pmc = 0; 656 src->businfo.cyc_clk_acc = 100; 657 src->businfo.max_rec = fc->maxrec; 658 src->businfo.max_rom = MAXROM_4; 659 src->businfo.generation = 1; 660 src->businfo.link_spd = fc->speed; 661 662 src->businfo.eui64.hi = fc->eui.hi; 663 src->businfo.eui64.lo = fc->eui.lo; 664 665 STAILQ_INIT(&src->chunk_list); 666 667 fc->crom_src = src; 668 fc->crom_root = &fc->crom_src_buf->root; 669} 670 671static void 672fw_reset_crom(struct firewire_comm *fc) 673{ 674 struct crom_src_buf *buf; 675 struct crom_src *src; 676 struct crom_chunk *root; 677 678 if (fc->crom_src_buf == NULL) 679 fw_init_crom(fc); 680 681 buf = fc->crom_src_buf; 682 src = fc->crom_src; 683 root = fc->crom_root; 684 685 STAILQ_INIT(&src->chunk_list); 686 687 bzero(root, sizeof(struct crom_chunk)); 688 crom_add_chunk(src, NULL, root, 0); 689 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */ 690 /* private company_id */ 691 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); 692#ifdef __DragonFly__ 693 crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project"); 694 crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version); 695#else 696 crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project"); 697 crom_add_entry(root, CSRKEY_HW, __FreeBSD_version); 698#endif 699 crom_add_simple_text(src, root, &buf->hw, hostname); 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 void *newrom; 712 int i, devcnt; 713 714 switch(fc->status){ 715 case FWBUSMGRELECT: 716 callout_stop(&fc->bmr_callout); 717 break; 718 default: 719 break; 720 } 721 fc->status = new_status; 722 fw_reset_csr(fc); 723 fw_reset_crom(fc); 724 725 if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) { 726 for( i = 0 ; i < devcnt ; i++) 727 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 728 fdc = device_get_softc(devlistp[i]); 729 if (fdc->post_busreset != NULL) 730 fdc->post_busreset(fdc); 731 } 732 free(devlistp, M_TEMP); 733 } 734 735 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); 736 src = &fc->crom_src_buf->src; 737 crom_load(src, (uint32_t *)newrom, CROMSIZE); 738 if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) { 739 /* bump generation and reload */ 740 src->businfo.generation ++; 741 /* generation must be between 0x2 and 0xF */ 742 if (src->businfo.generation < 2) 743 src->businfo.generation ++; 744 crom_load(src, (uint32_t *)newrom, CROMSIZE); 745 bcopy(newrom, (void *)fc->config_rom, CROMSIZE); 746 } 747 free(newrom, M_FW); 748} 749 750/* Call once after reboot */ 751void fw_init(struct firewire_comm *fc) 752{ 753 int i; 754#ifdef FW_VMACCESS 755 struct fw_xfer *xfer; 756 struct fw_bind *fwb; 757#endif 758 759 fc->arq->queued = 0; 760 fc->ars->queued = 0; 761 fc->atq->queued = 0; 762 fc->ats->queued = 0; 763 764 fc->arq->buf = NULL; 765 fc->ars->buf = NULL; 766 fc->atq->buf = NULL; 767 fc->ats->buf = NULL; 768 769 fc->arq->flag = 0; 770 fc->ars->flag = 0; 771 fc->atq->flag = 0; 772 fc->ats->flag = 0; 773 774 STAILQ_INIT(&fc->atq->q); 775 STAILQ_INIT(&fc->ats->q); 776 777 for( i = 0 ; i < fc->nisodma ; i ++ ){ 778 fc->it[i]->queued = 0; 779 fc->ir[i]->queued = 0; 780 781 fc->it[i]->start = NULL; 782 fc->ir[i]->start = NULL; 783 784 fc->it[i]->buf = NULL; 785 fc->ir[i]->buf = NULL; 786 787 fc->it[i]->flag = FWXFERQ_STREAM; 788 fc->ir[i]->flag = FWXFERQ_STREAM; 789 790 STAILQ_INIT(&fc->it[i]->q); 791 STAILQ_INIT(&fc->ir[i]->q); 792 } 793 794 fc->arq->maxq = FWMAXQUEUE; 795 fc->ars->maxq = FWMAXQUEUE; 796 fc->atq->maxq = FWMAXQUEUE; 797 fc->ats->maxq = FWMAXQUEUE; 798 799 for( i = 0 ; i < fc->nisodma ; i++){ 800 fc->ir[i]->maxq = FWMAXQUEUE; 801 fc->it[i]->maxq = FWMAXQUEUE; 802 } 803/* Initialize csr registers */ 804 fc->topology_map = (struct fw_topology_map *)malloc( 805 sizeof(struct fw_topology_map), 806 M_FW, M_NOWAIT | M_ZERO); 807 fc->speed_map = (struct fw_speed_map *)malloc( 808 sizeof(struct fw_speed_map), 809 M_FW, M_NOWAIT | M_ZERO); 810 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16; 811 CSRARC(fc, TOPO_MAP + 4) = 1; 812 CSRARC(fc, SPED_MAP) = 0x3f1 << 16; 813 CSRARC(fc, SPED_MAP + 4) = 1; 814 815 STAILQ_INIT(&fc->devices); 816 817/* Initialize Async handlers */ 818 STAILQ_INIT(&fc->binds); 819 for( i = 0 ; i < 0x40 ; i++){ 820 STAILQ_INIT(&fc->tlabels[i]); 821 } 822 823/* DV depend CSRs see blue book */ 824#if 0 825 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */ 826 CSRARC(fc, oPCR) = 0x8000007a; 827 for(i = 4 ; i < 0x7c/4 ; i+=4){ 828 CSRARC(fc, i + oPCR) = 0x8000007a; 829 } 830 831 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */ 832 CSRARC(fc, iPCR) = 0x803f0000; 833 for(i = 4 ; i < 0x7c/4 ; i+=4){ 834 CSRARC(fc, i + iPCR) = 0x0; 835 } 836#endif 837 838 fc->crom_src_buf = NULL; 839 840#ifdef FW_VMACCESS 841 xfer = fw_xfer_alloc(); 842 if(xfer == NULL) return; 843 844 fwb = (struct fw_bind *)malloc(sizeof (struct fw_bind), M_FW, M_NOWAIT); 845 if(fwb == NULL){ 846 fw_xfer_free(xfer); 847 return; 848 } 849 xfer->hand = fw_vmaccess; 850 xfer->fc = fc; 851 xfer->sc = NULL; 852 853 fwb->start_hi = 0x2; 854 fwb->start_lo = 0; 855 fwb->addrlen = 0xffffffff; 856 fwb->xfer = xfer; 857 fw_bindadd(fc, fwb); 858#endif 859} 860 861#define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\ 862 ((fwb)->end < (addr))?1:0) 863 864/* 865 * To lookup bound process from IEEE1394 address. 866 */ 867struct fw_bind * 868fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo) 869{ 870 u_int64_t addr; 871 struct fw_bind *tfw, *r = NULL; 872 873 addr = ((u_int64_t)dest_hi << 32) | dest_lo; 874 FW_GLOCK(fc); 875 STAILQ_FOREACH(tfw, &fc->binds, fclist) 876 if (BIND_CMP(addr, tfw) == 0) { 877 r = tfw; 878 break; 879 } 880 FW_GUNLOCK(fc); 881 return(r); 882} 883 884/* 885 * To bind IEEE1394 address block to process. 886 */ 887int 888fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb) 889{ 890 struct fw_bind *tfw, *prev = NULL; 891 int r = 0; 892 893 if (fwb->start > fwb->end) { 894 printf("%s: invalid range\n", __func__); 895 return EINVAL; 896 } 897 898 FW_GLOCK(fc); 899 STAILQ_FOREACH(tfw, &fc->binds, fclist) { 900 if (fwb->end < tfw->start) 901 break; 902 prev = tfw; 903 } 904 if (prev == NULL) 905 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist); 906 else if (prev->end < fwb->start) 907 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist); 908 else { 909 printf("%s: bind failed\n", __func__); 910 r = EBUSY; 911 } 912 FW_GUNLOCK(fc); 913 return (r); 914} 915 916/* 917 * To free IEEE1394 address block. 918 */ 919int 920fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb) 921{ 922#if 0 923 struct fw_xfer *xfer, *next; 924#endif 925 struct fw_bind *tfw; 926 int s; 927 928 s = splfw(); 929 FW_GLOCK(fc); 930 STAILQ_FOREACH(tfw, &fc->binds, fclist) 931 if (tfw == fwb) { 932 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist); 933 goto found; 934 } 935 936 printf("%s: no such binding\n", __func__); 937 FW_GUNLOCK(fc); 938 splx(s); 939 return (1); 940found: 941#if 0 942 /* shall we do this? */ 943 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) { 944 next = STAILQ_NEXT(xfer, link); 945 fw_xfer_free(xfer); 946 } 947 STAILQ_INIT(&fwb->xferlist); 948#endif 949 FW_GUNLOCK(fc); 950 951 splx(s); 952 return 0; 953} 954 955int 956fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type, 957 int slen, int rlen, int n, 958 struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *)) 959{ 960 int i, s; 961 struct fw_xfer *xfer; 962 963 for (i = 0; i < n; i++) { 964 xfer = fw_xfer_alloc_buf(type, slen, rlen); 965 if (xfer == NULL) 966 return (n); 967 xfer->fc = fc; 968 xfer->sc = sc; 969 xfer->hand = hand; 970 s = splfw(); 971 STAILQ_INSERT_TAIL(q, xfer, link); 972 splx(s); 973 } 974 return (n); 975} 976 977void 978fw_xferlist_remove(struct fw_xferlist *q) 979{ 980 struct fw_xfer *xfer, *next; 981 982 for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) { 983 next = STAILQ_NEXT(xfer, link); 984 fw_xfer_free_buf(xfer); 985 } 986 STAILQ_INIT(q); 987} 988/* 989 * dump packet header 990 */ 991static void 992fw_dump_hdr(struct fw_pkt *fp, char *prefix) 993{ 994 printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x " 995 "src=0x%03x\n", prefix, 996 fp->mode.hdr.dst & 0x3f, 997 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3, 998 fp->mode.hdr.tcode, fp->mode.hdr.pri, 999 fp->mode.hdr.src); 1000} 1001 1002/* 1003 * To free transaction label. 1004 */ 1005static void 1006fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer) 1007{ 1008 struct fw_xfer *txfer; 1009 int s; 1010 1011 if (xfer->tl < 0) 1012 return; 1013 1014 s = splfw(); 1015 FW_GLOCK(fc); 1016#if 1 /* make sure the label is allocated */ 1017 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) 1018 if(txfer == xfer) 1019 break; 1020 if (txfer == NULL) { 1021 printf("%s: the xfer is not in the queue " 1022 "(tlabel=%d, flag=0x%x)\n", 1023 __FUNCTION__, xfer->tl, xfer->flag); 1024 fw_dump_hdr(&xfer->send.hdr, "send"); 1025 fw_dump_hdr(&xfer->recv.hdr, "recv"); 1026 kdb_backtrace(); 1027 FW_GUNLOCK(fc); 1028 splx(s); 1029 return; 1030 } 1031#endif 1032 1033 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); 1034 FW_GUNLOCK(fc); 1035 splx(s); 1036 return; 1037} 1038 1039/* 1040 * To obtain XFER structure by transaction label. 1041 */ 1042static struct fw_xfer * 1043fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode) 1044{ 1045 struct fw_xfer *xfer; 1046 int s = splfw(); 1047 int req; 1048 1049 FW_GLOCK(fc); 1050 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) 1051 if(xfer->send.hdr.mode.hdr.dst == node) { 1052 FW_GUNLOCK(fc); 1053 splx(s); 1054 KASSERT(xfer->tl == tlabel, 1055 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel)); 1056 /* extra sanity check */ 1057 req = xfer->send.hdr.mode.hdr.tcode; 1058 if (xfer->fc->tcode[req].valid_res != tcode) { 1059 printf("%s: invalid response tcode " 1060 "(0x%x for 0x%x)\n", __FUNCTION__, 1061 tcode, req); 1062 return(NULL); 1063 } 1064 1065 if (firewire_debug > 2) 1066 printf("fw_tl2xfer: found tl=%d\n", tlabel); 1067 return(xfer); 1068 } 1069 FW_GUNLOCK(fc); 1070 if (firewire_debug > 1) 1071 printf("fw_tl2xfer: not found tl=%d\n", tlabel); 1072 splx(s); 1073 return(NULL); 1074} 1075 1076/* 1077 * To allocate IEEE1394 XFER structure. 1078 */ 1079struct fw_xfer * 1080fw_xfer_alloc(struct malloc_type *type) 1081{ 1082 struct fw_xfer *xfer; 1083 1084 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO); 1085 if (xfer == NULL) 1086 return xfer; 1087 1088 xfer->malloc = type; 1089 1090 return xfer; 1091} 1092 1093struct fw_xfer * 1094fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len) 1095{ 1096 struct fw_xfer *xfer; 1097 1098 xfer = fw_xfer_alloc(type); 1099 if (xfer == NULL) 1100 return(NULL); 1101 xfer->send.pay_len = send_len; 1102 xfer->recv.pay_len = recv_len; 1103 if (send_len > 0) { 1104 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO); 1105 if (xfer->send.payload == NULL) { 1106 fw_xfer_free(xfer); 1107 return(NULL); 1108 } 1109 } 1110 if (recv_len > 0) { 1111 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT); 1112 if (xfer->recv.payload == NULL) { 1113 if (xfer->send.payload != NULL) 1114 free(xfer->send.payload, type); 1115 fw_xfer_free(xfer); 1116 return(NULL); 1117 } 1118 } 1119 return(xfer); 1120} 1121 1122/* 1123 * IEEE1394 XFER post process. 1124 */ 1125void 1126fw_xfer_done(struct fw_xfer *xfer) 1127{ 1128 if (xfer->hand == NULL) { 1129 printf("hand == NULL\n"); 1130 return; 1131 } 1132 1133 if (xfer->fc == NULL) 1134 panic("fw_xfer_done: why xfer->fc is NULL?"); 1135 1136 fw_tl_free(xfer->fc, xfer); 1137 xfer->hand(xfer); 1138} 1139 1140void 1141fw_xfer_unload(struct fw_xfer* xfer) 1142{ 1143 int s; 1144 1145 if(xfer == NULL ) return; 1146 if(xfer->flag & FWXF_INQ){ 1147 printf("fw_xfer_free FWXF_INQ\n"); 1148 s = splfw(); 1149 FW_GLOCK(xfer->fc); 1150 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); 1151#if 0 1152 xfer->q->queued --; 1153#endif 1154 FW_GUNLOCK(xfer->fc); 1155 splx(s); 1156 } 1157 if (xfer->fc != NULL) { 1158#if 1 1159 if(xfer->flag & FWXF_START) 1160 /* 1161 * This could happen if: 1162 * 1. We call fwohci_arcv() before fwohci_txd(). 1163 * 2. firewire_watch() is called. 1164 */ 1165 printf("fw_xfer_free FWXF_START\n"); 1166#endif 1167 } 1168 xfer->flag = FWXF_INIT; 1169 xfer->resp = 0; 1170} 1171/* 1172 * To free IEEE1394 XFER structure. 1173 */ 1174void 1175fw_xfer_free_buf( struct fw_xfer* xfer) 1176{ 1177 if (xfer == NULL) { 1178 printf("%s: xfer == NULL\n", __func__); 1179 return; 1180 } 1181 fw_xfer_unload(xfer); 1182 if(xfer->send.payload != NULL){ 1183 free(xfer->send.payload, xfer->malloc); 1184 } 1185 if(xfer->recv.payload != NULL){ 1186 free(xfer->recv.payload, xfer->malloc); 1187 } 1188 free(xfer, xfer->malloc); 1189} 1190 1191void 1192fw_xfer_free( struct fw_xfer* xfer) 1193{ 1194 if (xfer == NULL) { 1195 printf("%s: xfer == NULL\n", __func__); 1196 return; 1197 } 1198 fw_xfer_unload(xfer); 1199 free(xfer, xfer->malloc); 1200} 1201 1202void 1203fw_asy_callback_free(struct fw_xfer *xfer) 1204{ 1205#if 0 1206 printf("asyreq done flag=0x%02x resp=%d\n", 1207 xfer->flag, xfer->resp); 1208#endif 1209 fw_xfer_free(xfer); 1210} 1211 1212/* 1213 * To configure PHY. 1214 */ 1215static void 1216fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count) 1217{ 1218 struct fw_xfer *xfer; 1219 struct fw_pkt *fp; 1220 1221 fc->status = FWBUSPHYCONF; 1222 1223 xfer = fw_xfer_alloc(M_FWXFER); 1224 if (xfer == NULL) 1225 return; 1226 xfer->fc = fc; 1227 xfer->hand = fw_asy_callback_free; 1228 1229 fp = &xfer->send.hdr; 1230 fp->mode.ld[1] = 0; 1231 if (root_node >= 0) 1232 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23; 1233 if (gap_count >= 0) 1234 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16; 1235 fp->mode.ld[2] = ~fp->mode.ld[1]; 1236/* XXX Dangerous, how to pass PHY packet to device driver */ 1237 fp->mode.common.tcode |= FWTCODE_PHY; 1238 1239 if (firewire_debug) 1240 printf("send phy_config root_node=%d gap_count=%d\n", 1241 root_node, gap_count); 1242 fw_asyreq(fc, -1, xfer); 1243} 1244 1245#if 0 1246/* 1247 * Dump self ID. 1248 */ 1249static void 1250fw_print_sid(uint32_t sid) 1251{ 1252 union fw_self_id *s; 1253 s = (union fw_self_id *) &sid; 1254 printf("node:%d link:%d gap:%d spd:%d del:%d con:%d pwr:%d" 1255 " p0:%d p1:%d p2:%d i:%d m:%d\n", 1256 s->p0.phy_id, s->p0.link_active, s->p0.gap_count, 1257 s->p0.phy_speed, s->p0.phy_delay, s->p0.contender, 1258 s->p0.power_class, s->p0.port0, s->p0.port1, 1259 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets); 1260} 1261#endif 1262 1263/* 1264 * To receive self ID. 1265 */ 1266void fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len) 1267{ 1268 uint32_t *p; 1269 union fw_self_id *self_id; 1270 u_int i, j, node, c_port = 0, i_branch = 0; 1271 1272 fc->sid_cnt = len /(sizeof(uint32_t) * 2); 1273 fc->max_node = fc->nodeid & 0x3f; 1274 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16; 1275 fc->status = FWBUSCYMELECT; 1276 fc->topology_map->crc_len = 2; 1277 fc->topology_map->generation ++; 1278 fc->topology_map->self_id_count = 0; 1279 fc->topology_map->node_count = 0; 1280 fc->speed_map->generation ++; 1281 fc->speed_map->crc_len = 1 + (64*64 + 3) / 4; 1282 self_id = &fc->topology_map->self_id[0]; 1283 for(i = 0; i < fc->sid_cnt; i ++){ 1284 if (sid[1] != ~sid[0]) { 1285 printf("fw_sidrcv: invalid self-id packet\n"); 1286 sid += 2; 1287 continue; 1288 } 1289 *self_id = *((union fw_self_id *)sid); 1290 fc->topology_map->crc_len++; 1291 if(self_id->p0.sequel == 0){ 1292 fc->topology_map->node_count ++; 1293 c_port = 0; 1294#if 0 1295 fw_print_sid(sid[0]); 1296#endif 1297 node = self_id->p0.phy_id; 1298 if(fc->max_node < node){ 1299 fc->max_node = self_id->p0.phy_id; 1300 } 1301 /* XXX I'm not sure this is the right speed_map */ 1302 fc->speed_map->speed[node][node] 1303 = self_id->p0.phy_speed; 1304 for (j = 0; j < node; j ++) { 1305 fc->speed_map->speed[j][node] 1306 = fc->speed_map->speed[node][j] 1307 = min(fc->speed_map->speed[j][j], 1308 self_id->p0.phy_speed); 1309 } 1310 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) && 1311 (self_id->p0.link_active && self_id->p0.contender)) { 1312 fc->irm = self_id->p0.phy_id; 1313 } 1314 if(self_id->p0.port0 >= 0x2){ 1315 c_port++; 1316 } 1317 if(self_id->p0.port1 >= 0x2){ 1318 c_port++; 1319 } 1320 if(self_id->p0.port2 >= 0x2){ 1321 c_port++; 1322 } 1323 } 1324 if(c_port > 2){ 1325 i_branch += (c_port - 2); 1326 } 1327 sid += 2; 1328 self_id++; 1329 fc->topology_map->self_id_count ++; 1330 } 1331 device_printf(fc->bdev, "%d nodes", fc->max_node + 1); 1332 /* CRC */ 1333 fc->topology_map->crc = fw_crc16( 1334 (uint32_t *)&fc->topology_map->generation, 1335 fc->topology_map->crc_len * 4); 1336 fc->speed_map->crc = fw_crc16( 1337 (uint32_t *)&fc->speed_map->generation, 1338 fc->speed_map->crc_len * 4); 1339 /* byteswap and copy to CSR */ 1340 p = (uint32_t *)fc->topology_map; 1341 for (i = 0; i <= fc->topology_map->crc_len; i++) 1342 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++); 1343 p = (uint32_t *)fc->speed_map; 1344 CSRARC(fc, SPED_MAP) = htonl(*p++); 1345 CSRARC(fc, SPED_MAP + 4) = htonl(*p++); 1346 /* don't byte-swap uint8_t array */ 1347 bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4); 1348 1349 fc->max_hop = fc->max_node - i_branch; 1350 printf(", maxhop <= %d", fc->max_hop); 1351 1352 if(fc->irm == -1 ){ 1353 printf(", Not found IRM capable node"); 1354 }else{ 1355 printf(", cable IRM = %d", fc->irm); 1356 if (fc->irm == fc->nodeid) 1357 printf(" (me)"); 1358 } 1359 printf("\n"); 1360 1361 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) { 1362 if (fc->irm == fc->nodeid) { 1363 fc->status = FWBUSMGRDONE; 1364 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm); 1365 fw_bmr(fc); 1366 } else { 1367 fc->status = FWBUSMGRELECT; 1368 callout_reset(&fc->bmr_callout, hz/8, 1369 (void *)fw_try_bmr, (void *)fc); 1370 } 1371 } else 1372 fc->status = FWBUSMGRDONE; 1373 1374 callout_reset(&fc->busprobe_callout, hz/4, 1375 (void *)fw_bus_probe, (void *)fc); 1376} 1377 1378/* 1379 * To probe devices on the IEEE1394 bus. 1380 */ 1381static void 1382fw_bus_probe(struct firewire_comm *fc) 1383{ 1384 int s; 1385 struct fw_device *fwdev; 1386 1387 s = splfw(); 1388 fc->status = FWBUSEXPLORE; 1389 1390 /* Invalidate all devices, just after bus reset. */ 1391 STAILQ_FOREACH(fwdev, &fc->devices, link) 1392 if (fwdev->status != FWDEVINVAL) { 1393 fwdev->status = FWDEVINVAL; 1394 fwdev->rcnt = 0; 1395 } 1396 splx(s); 1397 1398 wakeup((void *)fc); 1399} 1400 1401static int 1402fw_explore_read_quads(struct fw_device *fwdev, int offset, 1403 uint32_t *quad, int n) 1404{ 1405 struct fw_xfer *xfer; 1406 uint32_t tmp; 1407 int i, error; 1408 1409 for (i = 0; i < n; i ++, offset += sizeof(uint32_t)) { 1410 xfer = fwmem_read_quad(fwdev, NULL, -1, 1411 0xffff, 0xf0000000 | offset, (void *)&tmp, 1412 fw_xferwake); 1413 if (xfer == NULL) 1414 return (-1); 1415 fw_xferwait(xfer); 1416 1417 if (xfer->resp == 0) 1418 quad[i] = ntohl(tmp); 1419 1420 error = xfer->resp; 1421 fw_xfer_free(xfer); 1422 if (error) 1423 return (error); 1424 } 1425 return (0); 1426} 1427 1428 1429static int 1430fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur) 1431{ 1432 int err, i, off; 1433 struct csrdirectory *dir; 1434 struct csrreg *reg; 1435 1436 dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)]; 1437 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1438 (uint32_t *)dir, 1); 1439 if (err) 1440 return (-1); 1441 1442 offset += sizeof(uint32_t); 1443 reg = (struct csrreg *)&fwdev->csrrom[offset/sizeof(uint32_t)]; 1444 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1445 (uint32_t *)reg, dir->crc_len); 1446 if (err) 1447 return (-1); 1448 1449 /* XXX check CRC */ 1450 1451 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1); 1452 if (fwdev->rommax < off) 1453 fwdev->rommax = off; 1454 1455 if (recur == 0) 1456 return (0); 1457 1458 for (i = 0; i < dir->crc_len; i ++, offset += sizeof(uint32_t)) { 1459 if (reg[i].key == CROM_UDIR) 1460 recur = 1; 1461 else if (reg[i].key == CROM_TEXTLEAF) 1462 recur = 0; 1463 else 1464 continue; 1465 1466 off = offset + reg[i].val * sizeof(uint32_t); 1467 if (off > CROMSIZE) { 1468 printf("%s: invalid offset %d\n", __FUNCTION__, off); 1469 return(-1); 1470 } 1471 err = fw_explore_csrblock(fwdev, off, recur); 1472 if (err) 1473 return (-1); 1474 } 1475 return (0); 1476} 1477 1478static int 1479fw_explore_node(struct fw_device *dfwdev) 1480{ 1481 struct firewire_comm *fc; 1482 struct fw_device *fwdev, *pfwdev, *tfwdev; 1483 uint32_t *csr; 1484 struct csrhdr *hdr; 1485 struct bus_info *binfo; 1486 int err, node, spd; 1487 1488 fc = dfwdev->fc; 1489 csr = dfwdev->csrrom; 1490 node = dfwdev->dst; 1491 1492 /* First quad */ 1493 err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1); 1494 if (err) 1495 return (-1); 1496 hdr = (struct csrhdr *)&csr[0]; 1497 if (hdr->info_len != 4) { 1498 if (firewire_debug) 1499 printf("node%d: wrong bus info len(%d)\n", 1500 node, hdr->info_len); 1501 return (-1); 1502 } 1503 1504 /* bus info */ 1505 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); 1506 if (err) 1507 return (-1); 1508 binfo = (struct bus_info *)&csr[1]; 1509 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { 1510 if (firewire_debug) 1511 printf("node%d: invalid bus name 0x%08x\n", 1512 node, binfo->bus_name); 1513 return (-1); 1514 } 1515 spd = fc->speed_map->speed[fc->nodeid][node]; 1516 STAILQ_FOREACH(fwdev, &fc->devices, link) 1517 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) 1518 break; 1519 if (fwdev == NULL) { 1520 /* new device */ 1521 fwdev = malloc(sizeof(struct fw_device), M_FW, 1522 M_NOWAIT | M_ZERO); 1523 if (fwdev == NULL) { 1524 if (firewire_debug) 1525 printf("node%d: no memory\n", node); 1526 return (-1); 1527 } 1528 fwdev->fc = fc; 1529 fwdev->eui = binfo->eui64; 1530 /* inesrt into sorted fwdev list */ 1531 pfwdev = NULL; 1532 STAILQ_FOREACH(tfwdev, &fc->devices, link) { 1533 if (tfwdev->eui.hi > fwdev->eui.hi || 1534 (tfwdev->eui.hi == fwdev->eui.hi && 1535 tfwdev->eui.lo > fwdev->eui.lo)) 1536 break; 1537 pfwdev = tfwdev; 1538 } 1539 if (pfwdev == NULL) 1540 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link); 1541 else 1542 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link); 1543 1544 device_printf(fc->bdev, "New %s device ID:%08x%08x\n", 1545 linkspeed[spd], 1546 fwdev->eui.hi, fwdev->eui.lo); 1547 } 1548 fwdev->dst = node; 1549 fwdev->status = FWDEVINIT; 1550 fwdev->speed = spd; 1551 1552 /* unchanged ? */ 1553 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) { 1554 if (firewire_debug) 1555 printf("node%d: crom unchanged\n", node); 1556 return (0); 1557 } 1558 1559 bzero(&fwdev->csrrom[0], CROMSIZE); 1560 1561 /* copy first quad and bus info block */ 1562 bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5); 1563 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; 1564 1565 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ 1566 1567 if (err) { 1568 fwdev->status = FWDEVINVAL; 1569 fwdev->csrrom[0] = 0; 1570 } 1571 return (err); 1572 1573} 1574 1575/* 1576 * Find the self_id packet for a node, ignoring sequels. 1577 */ 1578static union fw_self_id * 1579fw_find_self_id(struct firewire_comm *fc, int node) 1580{ 1581 uint32_t i; 1582 union fw_self_id *s; 1583 1584 for (i = 0; i < fc->topology_map->self_id_count; i++) { 1585 s = &fc->topology_map->self_id[i]; 1586 if (s->p0.sequel) 1587 continue; 1588 if (s->p0.phy_id == node) 1589 return s; 1590 } 1591 return 0; 1592} 1593 1594static void 1595fw_explore(struct firewire_comm *fc) 1596{ 1597 int node, err, s, i, todo, todo2, trys; 1598 char nodes[63]; 1599 struct fw_device dfwdev; 1600 union fw_self_id *fwsid; 1601 1602 todo = 0; 1603 /* setup dummy fwdev */ 1604 dfwdev.fc = fc; 1605 dfwdev.speed = 0; 1606 dfwdev.maxrec = 8; /* 512 */ 1607 dfwdev.status = FWDEVINIT; 1608 1609 for (node = 0; node <= fc->max_node; node ++) { 1610 /* We don't probe myself and linkdown nodes */ 1611 if (node == fc->nodeid) 1612 continue; 1613 fwsid = fw_find_self_id(fc, node); 1614 if (!fwsid || !fwsid->p0.link_active) { 1615 if (firewire_debug) 1616 printf("node%d: link down\n", node); 1617 continue; 1618 } 1619 nodes[todo++] = node; 1620 } 1621 1622 s = splfw(); 1623 for (trys = 0; todo > 0 && trys < 3; trys ++) { 1624 todo2 = 0; 1625 for (i = 0; i < todo; i ++) { 1626 dfwdev.dst = nodes[i]; 1627 err = fw_explore_node(&dfwdev); 1628 if (err) 1629 nodes[todo2++] = nodes[i]; 1630 if (firewire_debug) 1631 printf("%s: node %d, err = %d\n", 1632 __FUNCTION__, node, err); 1633 } 1634 todo = todo2; 1635 } 1636 splx(s); 1637} 1638 1639 1640static void 1641fw_bus_probe_thread(void *arg) 1642{ 1643 struct firewire_comm *fc; 1644 1645 fc = (struct firewire_comm *)arg; 1646 1647 mtx_lock(&fc->wait_lock); 1648 while (fc->status != FWBUSDETACH) { 1649 if (fc->status == FWBUSEXPLORE) { 1650 mtx_unlock(&fc->wait_lock); 1651 fw_explore(fc); 1652 fc->status = FWBUSEXPDONE; 1653 if (firewire_debug) 1654 printf("bus_explore done\n"); 1655 fw_attach_dev(fc); 1656 mtx_lock(&fc->wait_lock); 1657 } 1658 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0); 1659 } 1660 mtx_unlock(&fc->wait_lock); 1661 kthread_exit(0); 1662} 1663 1664/* 1665 * To attach sub-devices layer onto IEEE1394 bus. 1666 */ 1667static void 1668fw_attach_dev(struct firewire_comm *fc) 1669{ 1670 struct fw_device *fwdev, *next; 1671 int i, err; 1672 device_t *devlistp; 1673 int devcnt; 1674 struct firewire_dev_comm *fdc; 1675 1676 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { 1677 next = STAILQ_NEXT(fwdev, link); 1678 if (fwdev->status == FWDEVINIT) { 1679 fwdev->status = FWDEVATTACHED; 1680 } else if (fwdev->status == FWDEVINVAL) { 1681 fwdev->rcnt ++; 1682 if (fwdev->rcnt > hold_count) { 1683 /* 1684 * Remove devices which have not been seen 1685 * for a while. 1686 */ 1687 STAILQ_REMOVE(&fc->devices, fwdev, fw_device, 1688 link); 1689 free(fwdev, M_FW); 1690 } 1691 } 1692 } 1693 1694 err = device_get_children(fc->bdev, &devlistp, &devcnt); 1695 if( err != 0 ) 1696 return; 1697 for( i = 0 ; i < devcnt ; i++){ 1698 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 1699 fdc = device_get_softc(devlistp[i]); 1700 if (fdc->post_explore != NULL) 1701 fdc->post_explore(fdc); 1702 } 1703 } 1704 free(devlistp, M_TEMP); 1705 1706 return; 1707} 1708 1709/* 1710 * To allocate unique transaction label. 1711 */ 1712static int 1713fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer) 1714{ 1715 u_int i; 1716 struct fw_xfer *txfer; 1717 int s; 1718 static uint32_t label = 0; 1719 1720 s = splfw(); 1721 FW_GLOCK(fc); 1722 for( i = 0 ; i < 0x40 ; i ++){ 1723 label = (label + 1) & 0x3f; 1724 STAILQ_FOREACH(txfer, &fc->tlabels[label], tlabel) 1725 if (txfer->send.hdr.mode.hdr.dst == 1726 xfer->send.hdr.mode.hdr.dst) 1727 break; 1728 if(txfer == NULL) { 1729 xfer->tl = label; 1730 xfer->send.hdr.mode.hdr.tlrt = label << 2; 1731 STAILQ_INSERT_TAIL(&fc->tlabels[label], xfer, tlabel); 1732 FW_GUNLOCK(fc); 1733 splx(s); 1734 if (firewire_debug > 1) 1735 printf("fw_get_tlabel: dst=%d tl=%d\n", 1736 xfer->send.hdr.mode.hdr.dst, label); 1737 /* note: label may be incremanted after unlock */ 1738 return(xfer->tl); 1739 } 1740 } 1741 FW_GUNLOCK(fc); 1742 splx(s); 1743 1744 if (firewire_debug > 1) 1745 printf("fw_get_tlabel: no free tlabel\n"); 1746 return(-1); 1747} 1748 1749static void 1750fw_rcv_copy(struct fw_rcv_buf *rb) 1751{ 1752 struct fw_pkt *pkt; 1753 u_char *p; 1754 struct tcode_info *tinfo; 1755 u_int res, i, len, plen; 1756 1757 rb->xfer->recv.spd = rb->spd; 1758 1759 pkt = (struct fw_pkt *)rb->vec->iov_base; 1760 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode]; 1761 1762 /* Copy header */ 1763 p = (u_char *)&rb->xfer->recv.hdr; 1764 bcopy(rb->vec->iov_base, p, tinfo->hdr_len); 1765 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len; 1766 rb->vec->iov_len -= tinfo->hdr_len; 1767 1768 /* Copy payload */ 1769 p = (u_char *)rb->xfer->recv.payload; 1770 res = rb->xfer->recv.pay_len; 1771 1772 /* special handling for RRESQ */ 1773 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ && 1774 p != NULL && res >= sizeof(uint32_t)) { 1775 *(uint32_t *)p = pkt->mode.rresq.data; 1776 rb->xfer->recv.pay_len = sizeof(uint32_t); 1777 return; 1778 } 1779 1780 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0) 1781 return; 1782 1783 plen = pkt->mode.rresb.len; 1784 1785 for (i = 0; i < rb->nvec; i++, rb->vec++) { 1786 len = MIN(rb->vec->iov_len, plen); 1787 if (res < len) { 1788 printf("rcv buffer(%d) is %d bytes short.\n", 1789 rb->xfer->recv.pay_len, len - res); 1790 len = res; 1791 } 1792 bcopy(rb->vec->iov_base, p, len); 1793 p += len; 1794 res -= len; 1795 plen -= len; 1796 if (res == 0 || plen == 0) 1797 break; 1798 } 1799 rb->xfer->recv.pay_len -= res; 1800 1801} 1802 1803/* 1804 * Generic packet receiving process. 1805 */ 1806void 1807fw_rcv(struct fw_rcv_buf *rb) 1808{ 1809 struct fw_pkt *fp, *resfp; 1810 struct fw_bind *bind; 1811 int tcode; 1812 int i, len, oldstate; 1813#if 0 1814 { 1815 uint32_t *qld; 1816 int i; 1817 qld = (uint32_t *)buf; 1818 printf("spd %d len:%d\n", spd, len); 1819 for( i = 0 ; i <= len && i < 32; i+= 4){ 1820 printf("0x%08x ", ntohl(qld[i/4])); 1821 if((i % 16) == 15) printf("\n"); 1822 } 1823 if((i % 16) != 15) printf("\n"); 1824 } 1825#endif 1826 fp = (struct fw_pkt *)rb->vec[0].iov_base; 1827 tcode = fp->mode.common.tcode; 1828 switch (tcode) { 1829 case FWTCODE_WRES: 1830 case FWTCODE_RRESQ: 1831 case FWTCODE_RRESB: 1832 case FWTCODE_LRES: 1833 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1834 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode); 1835 if(rb->xfer == NULL) { 1836 printf("fw_rcv: unknown response " 1837 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n", 1838 tcode_str[tcode], tcode, 1839 fp->mode.hdr.src, 1840 fp->mode.hdr.tlrt >> 2, 1841 fp->mode.hdr.tlrt & 3, 1842 fp->mode.rresq.data); 1843#if 0 1844 printf("try ad-hoc work around!!\n"); 1845 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1846 (fp->mode.hdr.tlrt >> 2)^3); 1847 if (rb->xfer == NULL) { 1848 printf("no use...\n"); 1849 return; 1850 } 1851#else 1852 return; 1853#endif 1854 } 1855 fw_rcv_copy(rb); 1856 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP) 1857 rb->xfer->resp = EIO; 1858 else 1859 rb->xfer->resp = 0; 1860 /* make sure the packet is drained in AT queue */ 1861 oldstate = rb->xfer->flag; 1862 rb->xfer->flag = FWXF_RCVD; 1863 switch (oldstate) { 1864 case FWXF_SENT: 1865 fw_xfer_done(rb->xfer); 1866 break; 1867 case FWXF_START: 1868#if 0 1869 if (firewire_debug) 1870 printf("not sent yet tl=%x\n", rb->xfer->tl); 1871#endif 1872 break; 1873 default: 1874 printf("unexpected flag 0x%02x\n", rb->xfer->flag); 1875 } 1876 return; 1877 case FWTCODE_WREQQ: 1878 case FWTCODE_WREQB: 1879 case FWTCODE_RREQQ: 1880 case FWTCODE_RREQB: 1881 case FWTCODE_LREQ: 1882 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi, 1883 fp->mode.rreqq.dest_lo); 1884 if(bind == NULL){ 1885 printf("Unknown service addr 0x%04x:0x%08x %s(%x)" 1886#if defined(__DragonFly__) || __FreeBSD_version < 500000 1887 " src=0x%x data=%lx\n", 1888#else 1889 " src=0x%x data=%x\n", 1890#endif 1891 fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo, 1892 tcode_str[tcode], tcode, 1893 fp->mode.hdr.src, ntohl(fp->mode.wreqq.data)); 1894 if (rb->fc->status == FWBUSINIT) { 1895 printf("fw_rcv: cannot respond(bus reset)!\n"); 1896 return; 1897 } 1898 rb->xfer = fw_xfer_alloc(M_FWXFER); 1899 if(rb->xfer == NULL){ 1900 return; 1901 } 1902 rb->xfer->send.spd = rb->spd; 1903 rb->xfer->send.pay_len = 0; 1904 resfp = &rb->xfer->send.hdr; 1905 switch (tcode) { 1906 case FWTCODE_WREQQ: 1907 case FWTCODE_WREQB: 1908 resfp->mode.hdr.tcode = FWTCODE_WRES; 1909 break; 1910 case FWTCODE_RREQQ: 1911 resfp->mode.hdr.tcode = FWTCODE_RRESQ; 1912 break; 1913 case FWTCODE_RREQB: 1914 resfp->mode.hdr.tcode = FWTCODE_RRESB; 1915 break; 1916 case FWTCODE_LREQ: 1917 resfp->mode.hdr.tcode = FWTCODE_LRES; 1918 break; 1919 } 1920 resfp->mode.hdr.dst = fp->mode.hdr.src; 1921 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt; 1922 resfp->mode.hdr.pri = fp->mode.hdr.pri; 1923 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR; 1924 resfp->mode.rresb.extcode = 0; 1925 resfp->mode.rresb.len = 0; 1926/* 1927 rb->xfer->hand = fw_xferwake; 1928*/ 1929 rb->xfer->hand = fw_xfer_free; 1930 if(fw_asyreq(rb->fc, -1, rb->xfer)){ 1931 fw_xfer_free(rb->xfer); 1932 return; 1933 } 1934 return; 1935 } 1936 len = 0; 1937 for (i = 0; i < rb->nvec; i ++) 1938 len += rb->vec[i].iov_len; 1939 rb->xfer = STAILQ_FIRST(&bind->xferlist); 1940 if (rb->xfer == NULL) { 1941#if 1 1942 printf("Discard a packet for this bind.\n"); 1943#endif 1944 return; 1945 } 1946 STAILQ_REMOVE_HEAD(&bind->xferlist, link); 1947 fw_rcv_copy(rb); 1948 rb->xfer->hand(rb->xfer); 1949 return; 1950#if 0 /* shouldn't happen ?? or for GASP */ 1951 case FWTCODE_STREAM: 1952 { 1953 struct fw_xferq *xferq; 1954 1955 xferq = rb->fc->ir[sub]; 1956#if 0 1957 printf("stream rcv dma %d len %d off %d spd %d\n", 1958 sub, len, off, spd); 1959#endif 1960 if(xferq->queued >= xferq->maxq) { 1961 printf("receive queue is full\n"); 1962 return; 1963 } 1964 /* XXX get xfer from xfer queue, we don't need copy for 1965 per packet mode */ 1966 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */ 1967 vec[0].iov_len); 1968 if (rb->xfer == NULL) 1969 return; 1970 fw_rcv_copy(rb) 1971 s = splfw(); 1972 xferq->queued++; 1973 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link); 1974 splx(s); 1975 sc = device_get_softc(rb->fc->bdev); 1976#if defined(__DragonFly__) || __FreeBSD_version < 500000 1977 if (&xferq->rsel.si_pid != 0) 1978#else 1979 if (SEL_WAITING(&xferq->rsel)) 1980#endif 1981 selwakeuppri(&xferq->rsel, FWPRI); 1982 if (xferq->flag & FWXFERQ_WAKEUP) { 1983 xferq->flag &= ~FWXFERQ_WAKEUP; 1984 wakeup((caddr_t)xferq); 1985 } 1986 if (xferq->flag & FWXFERQ_HANDLER) { 1987 xferq->hand(xferq); 1988 } 1989 return; 1990 break; 1991 } 1992#endif 1993 default: 1994 printf("fw_rcv: unknow tcode %d\n", tcode); 1995 break; 1996 } 1997} 1998 1999/* 2000 * Post process for Bus Manager election process. 2001 */ 2002static void 2003fw_try_bmr_callback(struct fw_xfer *xfer) 2004{ 2005 struct firewire_comm *fc; 2006 int bmr; 2007 2008 if (xfer == NULL) 2009 return; 2010 fc = xfer->fc; 2011 if (xfer->resp != 0) 2012 goto error; 2013 if (xfer->recv.payload == NULL) 2014 goto error; 2015 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE) 2016 goto error; 2017 2018 bmr = ntohl(xfer->recv.payload[0]); 2019 if (bmr == 0x3f) 2020 bmr = fc->nodeid; 2021 2022 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f); 2023 fw_xfer_free_buf(xfer); 2024 fw_bmr(fc); 2025 return; 2026 2027error: 2028 device_printf(fc->bdev, "bus manager election failed\n"); 2029 fw_xfer_free_buf(xfer); 2030} 2031 2032 2033/* 2034 * To candidate Bus Manager election process. 2035 */ 2036static void 2037fw_try_bmr(void *arg) 2038{ 2039 struct fw_xfer *xfer; 2040 struct firewire_comm *fc = (struct firewire_comm *)arg; 2041 struct fw_pkt *fp; 2042 int err = 0; 2043 2044 xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4); 2045 if(xfer == NULL){ 2046 return; 2047 } 2048 xfer->send.spd = 0; 2049 fc->status = FWBUSMGRELECT; 2050 2051 fp = &xfer->send.hdr; 2052 fp->mode.lreq.dest_hi = 0xffff; 2053 fp->mode.lreq.tlrt = 0; 2054 fp->mode.lreq.tcode = FWTCODE_LREQ; 2055 fp->mode.lreq.pri = 0; 2056 fp->mode.lreq.src = 0; 2057 fp->mode.lreq.len = 8; 2058 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP; 2059 fp->mode.lreq.dst = FWLOCALBUS | fc->irm; 2060 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID; 2061 xfer->send.payload[0] = htonl(0x3f); 2062 xfer->send.payload[1] = htonl(fc->nodeid); 2063 xfer->hand = fw_try_bmr_callback; 2064 2065 err = fw_asyreq(fc, -1, xfer); 2066 if(err){ 2067 fw_xfer_free_buf(xfer); 2068 return; 2069 } 2070 return; 2071} 2072 2073#ifdef FW_VMACCESS 2074/* 2075 * Software implementation for physical memory block access. 2076 * XXX:Too slow, usef for debug purpose only. 2077 */ 2078static void 2079fw_vmaccess(struct fw_xfer *xfer){ 2080 struct fw_pkt *rfp, *sfp = NULL; 2081 uint32_t *ld = (uint32_t *)xfer->recv.buf; 2082 2083 printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n", 2084 xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3])); 2085 printf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7])); 2086 if(xfer->resp != 0){ 2087 fw_xfer_free( xfer); 2088 return; 2089 } 2090 if(xfer->recv.buf == NULL){ 2091 fw_xfer_free( xfer); 2092 return; 2093 } 2094 rfp = (struct fw_pkt *)xfer->recv.buf; 2095 switch(rfp->mode.hdr.tcode){ 2096 /* XXX need fix for 64bit arch */ 2097 case FWTCODE_WREQB: 2098 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2099 xfer->send.len = 12; 2100 sfp = (struct fw_pkt *)xfer->send.buf; 2101 bcopy(rfp->mode.wreqb.payload, 2102 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len)); 2103 sfp->mode.wres.tcode = FWTCODE_WRES; 2104 sfp->mode.wres.rtcode = 0; 2105 break; 2106 case FWTCODE_WREQQ: 2107 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2108 xfer->send.len = 12; 2109 sfp->mode.wres.tcode = FWTCODE_WRES; 2110 *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data; 2111 sfp->mode.wres.rtcode = 0; 2112 break; 2113 case FWTCODE_RREQB: 2114 xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT); 2115 xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len); 2116 sfp = (struct fw_pkt *)xfer->send.buf; 2117 bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo), 2118 sfp->mode.rresb.payload, (uint16_t)ntohs(rfp->mode.rreqb.len)); 2119 sfp->mode.rresb.tcode = FWTCODE_RRESB; 2120 sfp->mode.rresb.len = rfp->mode.rreqb.len; 2121 sfp->mode.rresb.rtcode = 0; 2122 sfp->mode.rresb.extcode = 0; 2123 break; 2124 case FWTCODE_RREQQ: 2125 xfer->send.buf = malloc(16, M_FW, M_NOWAIT); 2126 xfer->send.len = 16; 2127 sfp = (struct fw_pkt *)xfer->send.buf; 2128 sfp->mode.rresq.data = *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo)); 2129 sfp->mode.wres.tcode = FWTCODE_RRESQ; 2130 sfp->mode.rresb.rtcode = 0; 2131 break; 2132 default: 2133 fw_xfer_free( xfer); 2134 return; 2135 } 2136 sfp->mode.hdr.dst = rfp->mode.hdr.src; 2137 xfer->dst = ntohs(rfp->mode.hdr.src); 2138 xfer->hand = fw_xfer_free; 2139 2140 sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt; 2141 sfp->mode.hdr.pri = 0; 2142 2143 fw_asyreq(xfer->fc, -1, xfer); 2144/**/ 2145 return; 2146} 2147#endif 2148 2149/* 2150 * CRC16 check-sum for IEEE1394 register blocks. 2151 */ 2152uint16_t 2153fw_crc16(uint32_t *ptr, uint32_t len){ 2154 uint32_t i, sum, crc = 0; 2155 int shift; 2156 len = (len + 3) & ~3; 2157 for(i = 0 ; i < len ; i+= 4){ 2158 for( shift = 28 ; shift >= 0 ; shift -= 4){ 2159 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf; 2160 crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum; 2161 } 2162 crc &= 0xffff; 2163 } 2164 return((uint16_t) crc); 2165} 2166 2167static int 2168fw_bmr(struct firewire_comm *fc) 2169{ 2170 struct fw_device fwdev; 2171 union fw_self_id *self_id; 2172 int cmstr; 2173 uint32_t quad; 2174 2175 /* Check to see if the current root node is cycle master capable */ 2176 self_id = fw_find_self_id(fc, fc->max_node); 2177 if (fc->max_node > 0) { 2178 /* XXX check cmc bit of businfo block rather than contender */ 2179 if (self_id->p0.link_active && self_id->p0.contender) 2180 cmstr = fc->max_node; 2181 else { 2182 device_printf(fc->bdev, 2183 "root node is not cycle master capable\n"); 2184 /* XXX shall we be the cycle master? */ 2185 cmstr = fc->nodeid; 2186 /* XXX need bus reset */ 2187 } 2188 } else 2189 cmstr = -1; 2190 2191 device_printf(fc->bdev, "bus manager %d ", CSRARC(fc, BUS_MGR_ID)); 2192 if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) { 2193 /* We are not the bus manager */ 2194 printf("\n"); 2195 return(0); 2196 } 2197 printf("(me)\n"); 2198 2199 /* Optimize gapcount */ 2200 if(fc->max_hop <= MAX_GAPHOP ) 2201 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]); 2202 /* If we are the cycle master, nothing to do */ 2203 if (cmstr == fc->nodeid || cmstr == -1) 2204 return 0; 2205 /* Bus probe has not finished, make dummy fwdev for cmstr */ 2206 bzero(&fwdev, sizeof(fwdev)); 2207 fwdev.fc = fc; 2208 fwdev.dst = cmstr; 2209 fwdev.speed = 0; 2210 fwdev.maxrec = 8; /* 512 */ 2211 fwdev.status = FWDEVINIT; 2212 /* Set cmstr bit on the cycle master */ 2213 quad = htonl(1 << 8); 2214 fwmem_write_quad(&fwdev, NULL, 0/*spd*/, 2215 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free); 2216 2217 return 0; 2218} 2219 2220int 2221fw_open_isodma(struct firewire_comm *fc, int tx) 2222{ 2223 struct fw_xferq **xferqa; 2224 struct fw_xferq *xferq; 2225 int i; 2226 2227 if (tx) 2228 xferqa = &fc->it[0]; 2229 else 2230 xferqa = &fc->ir[0]; 2231 2232 FW_GLOCK(fc); 2233 for (i = 0; i < fc->nisodma; i ++) { 2234 xferq = xferqa[i]; 2235 if ((xferq->flag & FWXFERQ_OPEN) == 0) { 2236 xferq->flag |= FWXFERQ_OPEN; 2237 break; 2238 } 2239 } 2240 if (i == fc->nisodma) { 2241 printf("no free dma channel (tx=%d)\n", tx); 2242 i = -1; 2243 } 2244 FW_GUNLOCK(fc); 2245 return (i); 2246} 2247 2248static int 2249fw_modevent(module_t mode, int type, void *data) 2250{ 2251 int err = 0; 2252#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 2253 static eventhandler_tag fwdev_ehtag = NULL; 2254#endif 2255 2256 switch (type) { 2257 case MOD_LOAD: 2258#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 2259 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone, 2260 fwdev_clone, 0, 1000); 2261#endif 2262 break; 2263 case MOD_UNLOAD: 2264#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 2265 if (fwdev_ehtag != NULL) 2266 EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag); 2267#endif 2268 break; 2269 case MOD_SHUTDOWN: 2270 break; 2271 default: 2272 return (EOPNOTSUPP); 2273 } 2274 return (err); 2275} 2276 2277 2278#ifdef __DragonFly__ 2279DECLARE_DUMMY_MODULE(firewire); 2280#endif 2281DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0); 2282MODULE_VERSION(firewire, 1); 2283