firewire.c revision 169829
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 169829 2007-05-21 12:17:54Z 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#if defined(__DragonFly__) || __FreeBSD_version < 500000 50#include <machine/clock.h> /* for DELAY() */ 51#endif 52 53#include <sys/bus.h> /* used by smbus and newbus */ 54#include <machine/bus.h> 55 56#ifdef __DragonFly__ 57#include "firewire.h" 58#include "firewirereg.h" 59#include "fwmem.h" 60#include "iec13213.h" 61#include "iec68113.h" 62#else 63#include <dev/firewire/firewire.h> 64#include <dev/firewire/firewirereg.h> 65#include <dev/firewire/fwmem.h> 66#include <dev/firewire/iec13213.h> 67#include <dev/firewire/iec68113.h> 68#endif 69 70struct crom_src_buf { 71 struct crom_src src; 72 struct crom_chunk root; 73 struct crom_chunk vendor; 74 struct crom_chunk hw; 75}; 76 77int firewire_debug=0, try_bmr=1, hold_count=3; 78SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0, 79 "FireWire driver debug flag"); 80SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem"); 81SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0, 82 "Try to be a bus manager"); 83SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0, 84 "Number of count of bus resets for removing lost device information"); 85 86MALLOC_DEFINE(M_FW, "firewire", "FireWire"); 87MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire"); 88 89#define FW_MAXASYRTY 4 90 91devclass_t firewire_devclass; 92 93static void firewire_identify (driver_t *, device_t); 94static int firewire_probe (device_t); 95static int firewire_attach (device_t); 96static int firewire_detach (device_t); 97static int firewire_resume (device_t); 98#if 0 99static int firewire_shutdown (device_t); 100#endif 101static device_t firewire_add_child (device_t, int, const char *, int); 102static void fw_try_bmr (void *); 103static void fw_try_bmr_callback (struct fw_xfer *); 104static void fw_asystart (struct fw_xfer *); 105static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *); 106static void fw_bus_probe (struct firewire_comm *); 107static void fw_attach_dev (struct firewire_comm *); 108static void fw_bus_probe_thread(void *); 109#ifdef FW_VMACCESS 110static void fw_vmaccess (struct fw_xfer *); 111#endif 112static int fw_bmr (struct firewire_comm *); 113 114static device_method_t firewire_methods[] = { 115 /* Device interface */ 116 DEVMETHOD(device_identify, firewire_identify), 117 DEVMETHOD(device_probe, firewire_probe), 118 DEVMETHOD(device_attach, firewire_attach), 119 DEVMETHOD(device_detach, firewire_detach), 120 DEVMETHOD(device_suspend, bus_generic_suspend), 121 DEVMETHOD(device_resume, firewire_resume), 122 DEVMETHOD(device_shutdown, bus_generic_shutdown), 123 124 /* Bus interface */ 125 DEVMETHOD(bus_add_child, firewire_add_child), 126 DEVMETHOD(bus_print_child, bus_generic_print_child), 127 128 { 0, 0 } 129}; 130char *linkspeed[] = { 131 "S100", "S200", "S400", "S800", 132 "S1600", "S3200", "undef", "undef" 133}; 134 135static char *tcode_str[] = { 136 "WREQQ", "WREQB", "WRES", "undef", 137 "RREQQ", "RREQB", "RRESQ", "RRESB", 138 "CYCS", "LREQ", "STREAM", "LRES", 139 "undef", "undef", "PHY", "undef" 140}; 141 142/* IEEE-1394a Table C-2 Gap count as a function of hops*/ 143#define MAX_GAPHOP 15 144u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18, 145 21, 24, 26, 29, 32, 35, 37, 40}; 146 147static driver_t firewire_driver = { 148 "firewire", 149 firewire_methods, 150 sizeof(struct firewire_softc), 151}; 152 153/* 154 * Lookup fwdev by node id. 155 */ 156struct fw_device * 157fw_noderesolve_nodeid(struct firewire_comm *fc, int dst) 158{ 159 struct fw_device *fwdev; 160 int s; 161 162 s = splfw(); 163 STAILQ_FOREACH(fwdev, &fc->devices, link) 164 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL) 165 break; 166 splx(s); 167 168 return fwdev; 169} 170 171/* 172 * Lookup fwdev by EUI64. 173 */ 174struct fw_device * 175fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui) 176{ 177 struct fw_device *fwdev; 178 int s; 179 180 s = splfw(); 181 STAILQ_FOREACH(fwdev, &fc->devices, link) 182 if (FW_EUI64_EQUAL(fwdev->eui, *eui)) 183 break; 184 splx(s); 185 186 if(fwdev == NULL) return NULL; 187 if(fwdev->status == FWDEVINVAL) return NULL; 188 return fwdev; 189} 190 191/* 192 * Async. request procedure for userland application. 193 */ 194int 195fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer) 196{ 197 int err = 0; 198 struct fw_xferq *xferq; 199 int tl = -1, len; 200 struct fw_pkt *fp; 201 int tcode; 202 struct tcode_info *info; 203 204 if(xfer == NULL) return EINVAL; 205 if(xfer->hand == NULL){ 206 printf("hand == NULL\n"); 207 return EINVAL; 208 } 209 fp = &xfer->send.hdr; 210 211 tcode = fp->mode.common.tcode & 0xf; 212 info = &fc->tcode[tcode]; 213 if (info->flag == 0) { 214 printf("invalid tcode=%x\n", tcode); 215 return EINVAL; 216 } 217 if (info->flag & FWTI_REQ) 218 xferq = fc->atq; 219 else 220 xferq = fc->ats; 221 len = info->hdr_len; 222 if (xfer->send.pay_len > MAXREC(fc->maxrec)) { 223 printf("send.pay_len > maxrec\n"); 224 return EINVAL; 225 } 226 if (info->flag & FWTI_BLOCK_STR) 227 len = fp->mode.stream.len; 228 else if (info->flag & FWTI_BLOCK_ASY) 229 len = fp->mode.rresb.len; 230 else 231 len = 0; 232 if (len != xfer->send.pay_len){ 233 printf("len(%d) != send.pay_len(%d) %s(%x)\n", 234 len, xfer->send.pay_len, tcode_str[tcode], tcode); 235 return EINVAL; 236 } 237 238 if(xferq->start == NULL){ 239 printf("xferq->start == NULL\n"); 240 return EINVAL; 241 } 242 if(!(xferq->queued < xferq->maxq)){ 243 device_printf(fc->bdev, "Discard a packet (queued=%d)\n", 244 xferq->queued); 245 return EINVAL; 246 } 247 248 if (info->flag & FWTI_TLABEL) { 249 if ((tl = fw_get_tlabel(fc, xfer)) == -1) 250 return EAGAIN; 251 fp->mode.hdr.tlrt = tl << 2; 252 } 253 254 xfer->tl = tl; 255 xfer->resp = 0; 256 xfer->fc = fc; 257 xfer->q = xferq; 258 259 fw_asystart(xfer); 260 return err; 261} 262/* 263 * Wakeup blocked process. 264 */ 265void 266fw_asy_callback(struct fw_xfer *xfer){ 267 wakeup(xfer); 268 return; 269} 270 271/* 272 * Async. request with given xfer structure. 273 */ 274static void 275fw_asystart(struct fw_xfer *xfer) 276{ 277 struct firewire_comm *fc = xfer->fc; 278 int s; 279#if 0 /* XXX allow bus explore packets only after bus rest */ 280 if (fc->status < FWBUSEXPLORE) { 281 xfer->resp = EAGAIN; 282 xfer->state = FWXF_BUSY; 283 if (xfer->hand != NULL) 284 xfer->hand(xfer); 285 return; 286 } 287#endif 288 microtime(&xfer->tv); 289 s = splfw(); 290 xfer->state = FWXF_INQ; 291 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); 292 xfer->q->queued ++; 293 splx(s); 294 /* XXX just queue for mbuf */ 295 if (xfer->mbuf == NULL) 296 xfer->q->start(fc); 297 return; 298} 299 300static void 301firewire_identify(driver_t *driver, device_t parent) 302{ 303 BUS_ADD_CHILD(parent, 0, "firewire", -1); 304} 305 306static int 307firewire_probe(device_t dev) 308{ 309 device_set_desc(dev, "IEEE1394(FireWire) bus"); 310 return (0); 311} 312 313static void 314firewire_xfer_timeout(struct firewire_comm *fc) 315{ 316 struct fw_xfer *xfer; 317 struct timeval tv; 318 struct timeval split_timeout; 319 int i, s; 320 321 split_timeout.tv_sec = 0; 322 split_timeout.tv_usec = 200 * 1000; /* 200 msec */ 323 324 microtime(&tv); 325 timevalsub(&tv, &split_timeout); 326 327 s = splfw(); 328 for (i = 0; i < 0x40; i ++) { 329 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 330 if (timevalcmp(&xfer->tv, &tv, >)) 331 /* the rests are newer than this */ 332 break; 333 if (xfer->state == FWXF_START) 334 /* not sent yet */ 335 break; 336 device_printf(fc->bdev, 337 "split transaction timeout dst=0x%x tl=0x%x state=%d\n", 338 xfer->send.hdr.mode.hdr.dst, i, xfer->state); 339 xfer->resp = ETIMEDOUT; 340 fw_xfer_done(xfer); 341 } 342 } 343 splx(s); 344} 345 346#define WATCHDOC_HZ 10 347static void 348firewire_watchdog(void *arg) 349{ 350 struct firewire_comm *fc; 351 static int watchdoc_clock = 0; 352 353 fc = (struct firewire_comm *)arg; 354 355 /* 356 * At boot stage, the device interrupt is disabled and 357 * We encounter a timeout easily. To avoid this, 358 * ignore clock interrupt for a while. 359 */ 360 if (watchdoc_clock > WATCHDOC_HZ * 15) { 361 firewire_xfer_timeout(fc); 362 fc->timeout(fc); 363 } else 364 watchdoc_clock ++; 365 366 callout_reset(&fc->timeout_callout, hz / WATCHDOC_HZ, 367 (void *)firewire_watchdog, (void *)fc); 368} 369 370/* 371 * The attach routine. 372 */ 373static int 374firewire_attach(device_t dev) 375{ 376 int unit; 377 struct firewire_softc *sc = device_get_softc(dev); 378 device_t pa = device_get_parent(dev); 379 struct firewire_comm *fc; 380 struct proc *p; 381 382 fc = (struct firewire_comm *)device_get_softc(pa); 383 sc->fc = fc; 384 fc->status = FWBUSNOTREADY; 385 386 unit = device_get_unit(dev); 387 if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA; 388 389 fwdev_makedev(sc); 390 391 CALLOUT_INIT(&sc->fc->timeout_callout); 392 CALLOUT_INIT(&sc->fc->bmr_callout); 393 CALLOUT_INIT(&sc->fc->busprobe_callout); 394 395 callout_reset(&sc->fc->timeout_callout, hz, 396 (void *)firewire_watchdog, (void *)sc->fc); 397 398 /* create thread */ 399 kthread_create(fw_bus_probe_thread, (void *)fc, &p, 400 0, 0, "fw%d_probe", unit); 401 402 /* Locate our children */ 403 bus_generic_probe(dev); 404 405 /* launch attachement of the added children */ 406 bus_generic_attach(dev); 407 408 /* bus_reset */ 409 fw_busreset(fc, FWBUSNOTREADY); 410 fc->ibr(fc); 411 412 return 0; 413} 414 415/* 416 * Attach it as child. 417 */ 418static device_t 419firewire_add_child(device_t dev, int order, const char *name, int unit) 420{ 421 device_t child; 422 struct firewire_softc *sc; 423 424 sc = (struct firewire_softc *)device_get_softc(dev); 425 child = device_add_child(dev, name, unit); 426 if (child) { 427 device_set_ivars(child, sc->fc); 428 device_probe_and_attach(child); 429 } 430 431 return child; 432} 433 434static int 435firewire_resume(device_t dev) 436{ 437 struct firewire_softc *sc; 438 439 sc = (struct firewire_softc *)device_get_softc(dev); 440 sc->fc->status = FWBUSNOTREADY; 441 442 bus_generic_resume(dev); 443 444 return(0); 445} 446 447/* 448 * Dettach it. 449 */ 450static int 451firewire_detach(device_t dev) 452{ 453 struct firewire_softc *sc; 454 struct firewire_comm *fc; 455 struct fw_device *fwdev, *fwdev_next; 456 int err; 457 458 sc = (struct firewire_softc *)device_get_softc(dev); 459 fc = sc->fc; 460 fc->status = FWBUSDETACH; 461 462 if ((err = fwdev_destroydev(sc)) != 0) 463 return err; 464 465 if ((err = bus_generic_detach(dev)) != 0) 466 return err; 467 468 callout_stop(&fc->timeout_callout); 469 callout_stop(&fc->bmr_callout); 470 callout_stop(&fc->busprobe_callout); 471 472 /* XXX xfree_free and untimeout on all xfers */ 473 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; 474 fwdev = fwdev_next) { 475 fwdev_next = STAILQ_NEXT(fwdev, link); 476 free(fwdev, M_FW); 477 } 478 free(fc->topology_map, M_FW); 479 free(fc->speed_map, M_FW); 480 free(fc->crom_src_buf, M_FW); 481 482 wakeup(fc); 483 if (tsleep(fc, PWAIT, "fwthr", hz * 60)) 484 printf("firewire task thread didn't die\n"); 485 486 return(0); 487} 488#if 0 489static int 490firewire_shutdown( device_t dev ) 491{ 492 return 0; 493} 494#endif 495 496 497static void 498fw_xferq_drain(struct fw_xferq *xferq) 499{ 500 struct fw_xfer *xfer; 501 502 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) { 503 STAILQ_REMOVE_HEAD(&xferq->q, link); 504 xferq->queued --; 505 xfer->resp = EAGAIN; 506 xfer->state = FWXF_SENTERR; 507 fw_xfer_done(xfer); 508 } 509} 510 511void 512fw_drain_txq(struct firewire_comm *fc) 513{ 514 int i; 515 516 fw_xferq_drain(fc->atq); 517 fw_xferq_drain(fc->ats); 518 for(i = 0; i < fc->nisodma; i++) 519 fw_xferq_drain(fc->it[i]); 520} 521 522static void 523fw_reset_csr(struct firewire_comm *fc) 524{ 525 int i; 526 527 CSRARC(fc, STATE_CLEAR) 528 = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ; 529 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 530 CSRARC(fc, NODE_IDS) = 0x3f; 531 532 CSRARC(fc, TOPO_MAP + 8) = 0; 533 fc->irm = -1; 534 535 fc->max_node = -1; 536 537 for(i = 2; i < 0x100/4 - 2 ; i++){ 538 CSRARC(fc, SPED_MAP + i * 4) = 0; 539 } 540 CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ; 541 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 542 CSRARC(fc, RESET_START) = 0; 543 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0; 544 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19; 545 CSRARC(fc, CYCLE_TIME) = 0x0; 546 CSRARC(fc, BUS_TIME) = 0x0; 547 CSRARC(fc, BUS_MGR_ID) = 0x3f; 548 CSRARC(fc, BANDWIDTH_AV) = 4915; 549 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; 550 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; 551 CSRARC(fc, IP_CHANNELS) = (1 << 31); 552 553 CSRARC(fc, CONF_ROM) = 0x04 << 24; 554 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */ 555 CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 | 556 1 << 28 | 0xff << 16 | 0x09 << 8; 557 CSRARC(fc, CONF_ROM + 0xc) = 0; 558 559/* DV depend CSRs see blue book */ 560 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON; 561 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON; 562 563 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 ); 564 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 565} 566 567static void 568fw_init_crom(struct firewire_comm *fc) 569{ 570 struct crom_src *src; 571 572 fc->crom_src_buf = (struct crom_src_buf *) 573 malloc(sizeof(struct crom_src_buf), M_FW, M_WAITOK | M_ZERO); 574 if (fc->crom_src_buf == NULL) 575 return; 576 577 src = &fc->crom_src_buf->src; 578 bzero(src, sizeof(struct crom_src)); 579 580 /* BUS info sample */ 581 src->hdr.info_len = 4; 582 583 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394; 584 585 src->businfo.irmc = 1; 586 src->businfo.cmc = 1; 587 src->businfo.isc = 1; 588 src->businfo.bmc = 1; 589 src->businfo.pmc = 0; 590 src->businfo.cyc_clk_acc = 100; 591 src->businfo.max_rec = fc->maxrec; 592 src->businfo.max_rom = MAXROM_4; 593 src->businfo.generation = 1; 594 src->businfo.link_spd = fc->speed; 595 596 src->businfo.eui64.hi = fc->eui.hi; 597 src->businfo.eui64.lo = fc->eui.lo; 598 599 STAILQ_INIT(&src->chunk_list); 600 601 fc->crom_src = src; 602 fc->crom_root = &fc->crom_src_buf->root; 603} 604 605static void 606fw_reset_crom(struct firewire_comm *fc) 607{ 608 struct crom_src_buf *buf; 609 struct crom_src *src; 610 struct crom_chunk *root; 611 612 if (fc->crom_src_buf == NULL) 613 fw_init_crom(fc); 614 615 buf = fc->crom_src_buf; 616 src = fc->crom_src; 617 root = fc->crom_root; 618 619 STAILQ_INIT(&src->chunk_list); 620 621 bzero(root, sizeof(struct crom_chunk)); 622 crom_add_chunk(src, NULL, root, 0); 623 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */ 624 /* private company_id */ 625 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); 626#ifdef __DragonFly__ 627 crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project"); 628 crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version); 629#else 630 crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project"); 631 crom_add_entry(root, CSRKEY_HW, __FreeBSD_version); 632#endif 633 crom_add_simple_text(src, root, &buf->hw, hostname); 634} 635 636/* 637 * Called after bus reset. 638 */ 639void 640fw_busreset(struct firewire_comm *fc, uint32_t new_status) 641{ 642 struct firewire_dev_comm *fdc; 643 struct crom_src *src; 644 device_t *devlistp; 645 void *newrom; 646 int i, devcnt; 647 648 switch(fc->status){ 649 case FWBUSMGRELECT: 650 callout_stop(&fc->bmr_callout); 651 break; 652 default: 653 break; 654 } 655 fc->status = new_status; 656 fw_reset_csr(fc); 657 fw_reset_crom(fc); 658 659 if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) { 660 for( i = 0 ; i < devcnt ; i++) 661 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 662 fdc = device_get_softc(devlistp[i]); 663 if (fdc->post_busreset != NULL) 664 fdc->post_busreset(fdc); 665 } 666 free(devlistp, M_TEMP); 667 } 668 669 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); 670 src = &fc->crom_src_buf->src; 671 crom_load(src, (uint32_t *)newrom, CROMSIZE); 672 if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) { 673 /* bump generation and reload */ 674 src->businfo.generation ++; 675 /* generation must be between 0x2 and 0xF */ 676 if (src->businfo.generation < 2) 677 src->businfo.generation ++; 678 crom_load(src, (uint32_t *)newrom, CROMSIZE); 679 bcopy(newrom, (void *)fc->config_rom, CROMSIZE); 680 } 681 free(newrom, M_FW); 682} 683 684/* Call once after reboot */ 685void fw_init(struct firewire_comm *fc) 686{ 687 int i; 688#ifdef FW_VMACCESS 689 struct fw_xfer *xfer; 690 struct fw_bind *fwb; 691#endif 692 693 fc->arq->queued = 0; 694 fc->ars->queued = 0; 695 fc->atq->queued = 0; 696 fc->ats->queued = 0; 697 698 fc->arq->buf = NULL; 699 fc->ars->buf = NULL; 700 fc->atq->buf = NULL; 701 fc->ats->buf = NULL; 702 703 fc->arq->flag = 0; 704 fc->ars->flag = 0; 705 fc->atq->flag = 0; 706 fc->ats->flag = 0; 707 708 STAILQ_INIT(&fc->atq->q); 709 STAILQ_INIT(&fc->ats->q); 710 711 for( i = 0 ; i < fc->nisodma ; i ++ ){ 712 fc->it[i]->queued = 0; 713 fc->ir[i]->queued = 0; 714 715 fc->it[i]->start = NULL; 716 fc->ir[i]->start = NULL; 717 718 fc->it[i]->buf = NULL; 719 fc->ir[i]->buf = NULL; 720 721 fc->it[i]->flag = FWXFERQ_STREAM; 722 fc->ir[i]->flag = FWXFERQ_STREAM; 723 724 STAILQ_INIT(&fc->it[i]->q); 725 STAILQ_INIT(&fc->ir[i]->q); 726 } 727 728 fc->arq->maxq = FWMAXQUEUE; 729 fc->ars->maxq = FWMAXQUEUE; 730 fc->atq->maxq = FWMAXQUEUE; 731 fc->ats->maxq = FWMAXQUEUE; 732 733 for( i = 0 ; i < fc->nisodma ; i++){ 734 fc->ir[i]->maxq = FWMAXQUEUE; 735 fc->it[i]->maxq = FWMAXQUEUE; 736 } 737/* Initialize csr registers */ 738 fc->topology_map = (struct fw_topology_map *)malloc( 739 sizeof(struct fw_topology_map), 740 M_FW, M_NOWAIT | M_ZERO); 741 fc->speed_map = (struct fw_speed_map *)malloc( 742 sizeof(struct fw_speed_map), 743 M_FW, M_NOWAIT | M_ZERO); 744 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16; 745 CSRARC(fc, TOPO_MAP + 4) = 1; 746 CSRARC(fc, SPED_MAP) = 0x3f1 << 16; 747 CSRARC(fc, SPED_MAP + 4) = 1; 748 749 STAILQ_INIT(&fc->devices); 750 751/* Initialize Async handlers */ 752 STAILQ_INIT(&fc->binds); 753 for( i = 0 ; i < 0x40 ; i++){ 754 STAILQ_INIT(&fc->tlabels[i]); 755 } 756 757/* DV depend CSRs see blue book */ 758#if 0 759 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */ 760 CSRARC(fc, oPCR) = 0x8000007a; 761 for(i = 4 ; i < 0x7c/4 ; i+=4){ 762 CSRARC(fc, i + oPCR) = 0x8000007a; 763 } 764 765 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */ 766 CSRARC(fc, iPCR) = 0x803f0000; 767 for(i = 4 ; i < 0x7c/4 ; i+=4){ 768 CSRARC(fc, i + iPCR) = 0x0; 769 } 770#endif 771 772 fc->crom_src_buf = NULL; 773 774#ifdef FW_VMACCESS 775 xfer = fw_xfer_alloc(); 776 if(xfer == NULL) return; 777 778 fwb = (struct fw_bind *)malloc(sizeof (struct fw_bind), M_FW, M_NOWAIT); 779 if(fwb == NULL){ 780 fw_xfer_free(xfer); 781 return; 782 } 783 xfer->hand = fw_vmaccess; 784 xfer->fc = fc; 785 xfer->sc = NULL; 786 787 fwb->start_hi = 0x2; 788 fwb->start_lo = 0; 789 fwb->addrlen = 0xffffffff; 790 fwb->xfer = xfer; 791 fw_bindadd(fc, fwb); 792#endif 793} 794 795#define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\ 796 ((fwb)->end < (addr))?1:0) 797 798/* 799 * To lookup bound process from IEEE1394 address. 800 */ 801struct fw_bind * 802fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo) 803{ 804 u_int64_t addr; 805 struct fw_bind *tfw; 806 807 addr = ((u_int64_t)dest_hi << 32) | dest_lo; 808 STAILQ_FOREACH(tfw, &fc->binds, fclist) 809 if (BIND_CMP(addr, tfw) == 0) 810 return(tfw); 811 return(NULL); 812} 813 814/* 815 * To bind IEEE1394 address block to process. 816 */ 817int 818fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb) 819{ 820 struct fw_bind *tfw, *prev = NULL; 821 822 if (fwb->start > fwb->end) { 823 printf("%s: invalid range\n", __func__); 824 return EINVAL; 825 } 826 827 STAILQ_FOREACH(tfw, &fc->binds, fclist) { 828 if (fwb->end < tfw->start) 829 break; 830 prev = tfw; 831 } 832 if (prev == NULL) { 833 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist); 834 return (0); 835 } 836 if (prev->end < fwb->start) { 837 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist); 838 return (0); 839 } 840 841 printf("%s: bind failed\n", __func__); 842 return (EBUSY); 843} 844 845/* 846 * To free IEEE1394 address block. 847 */ 848int 849fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb) 850{ 851#if 0 852 struct fw_xfer *xfer, *next; 853#endif 854 struct fw_bind *tfw; 855 int s; 856 857 s = splfw(); 858 STAILQ_FOREACH(tfw, &fc->binds, fclist) 859 if (tfw == fwb) { 860 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist); 861 goto found; 862 } 863 864 printf("%s: no such binding\n", __func__); 865 splx(s); 866 return (1); 867found: 868#if 0 869 /* shall we do this? */ 870 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) { 871 next = STAILQ_NEXT(xfer, link); 872 fw_xfer_free(xfer); 873 } 874 STAILQ_INIT(&fwb->xferlist); 875#endif 876 877 splx(s); 878 return 0; 879} 880 881int 882fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type, 883 int slen, int rlen, int n, 884 struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *)) 885{ 886 int i, s; 887 struct fw_xfer *xfer; 888 889 for (i = 0; i < n; i++) { 890 xfer = fw_xfer_alloc_buf(type, slen, rlen); 891 if (xfer == NULL) 892 return (n); 893 xfer->fc = fc; 894 xfer->sc = sc; 895 xfer->hand = hand; 896 s = splfw(); 897 STAILQ_INSERT_TAIL(q, xfer, link); 898 splx(s); 899 } 900 return (n); 901} 902 903void 904fw_xferlist_remove(struct fw_xferlist *q) 905{ 906 struct fw_xfer *xfer, *next; 907 908 for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) { 909 next = STAILQ_NEXT(xfer, link); 910 fw_xfer_free_buf(xfer); 911 } 912 STAILQ_INIT(q); 913} 914 915/* 916 * To free transaction label. 917 */ 918static void 919fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer) 920{ 921 struct fw_xfer *txfer; 922 int s; 923 924 if (xfer->tl < 0) 925 return; 926 927 s = splfw(); 928#if 1 /* make sure the label is allocated */ 929 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) 930 if(txfer == xfer) 931 break; 932 if (txfer == NULL) { 933 printf("%s: the xfer is not in the tlabel(%d)\n", 934 __FUNCTION__, xfer->tl); 935 splx(s); 936 return; 937 } 938#endif 939 940 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); 941 splx(s); 942 return; 943} 944 945/* 946 * To obtain XFER structure by transaction label. 947 */ 948static struct fw_xfer * 949fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel) 950{ 951 struct fw_xfer *xfer; 952 int s = splfw(); 953 954 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) 955 if(xfer->send.hdr.mode.hdr.dst == node) { 956 splx(s); 957 if (firewire_debug > 2) 958 printf("fw_tl2xfer: found tl=%d\n", tlabel); 959 return(xfer); 960 } 961 if (firewire_debug > 1) 962 printf("fw_tl2xfer: not found tl=%d\n", tlabel); 963 splx(s); 964 return(NULL); 965} 966 967/* 968 * To allocate IEEE1394 XFER structure. 969 */ 970struct fw_xfer * 971fw_xfer_alloc(struct malloc_type *type) 972{ 973 struct fw_xfer *xfer; 974 975 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO); 976 if (xfer == NULL) 977 return xfer; 978 979 xfer->malloc = type; 980 981 return xfer; 982} 983 984struct fw_xfer * 985fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len) 986{ 987 struct fw_xfer *xfer; 988 989 xfer = fw_xfer_alloc(type); 990 if (xfer == NULL) 991 return(NULL); 992 xfer->send.pay_len = send_len; 993 xfer->recv.pay_len = recv_len; 994 if (send_len > 0) { 995 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO); 996 if (xfer->send.payload == NULL) { 997 fw_xfer_free(xfer); 998 return(NULL); 999 } 1000 } 1001 if (recv_len > 0) { 1002 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT); 1003 if (xfer->recv.payload == NULL) { 1004 if (xfer->send.payload != NULL) 1005 free(xfer->send.payload, type); 1006 fw_xfer_free(xfer); 1007 return(NULL); 1008 } 1009 } 1010 return(xfer); 1011} 1012 1013/* 1014 * IEEE1394 XFER post process. 1015 */ 1016void 1017fw_xfer_done(struct fw_xfer *xfer) 1018{ 1019 if (xfer->hand == NULL) { 1020 printf("hand == NULL\n"); 1021 return; 1022 } 1023 1024 if (xfer->fc == NULL) 1025 panic("fw_xfer_done: why xfer->fc is NULL?"); 1026 1027 fw_tl_free(xfer->fc, xfer); 1028 xfer->hand(xfer); 1029} 1030 1031void 1032fw_xfer_unload(struct fw_xfer* xfer) 1033{ 1034 int s; 1035 1036 if(xfer == NULL ) return; 1037 if(xfer->state == FWXF_INQ){ 1038 printf("fw_xfer_free FWXF_INQ\n"); 1039 s = splfw(); 1040 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); 1041 xfer->q->queued --; 1042 splx(s); 1043 } 1044 if (xfer->fc != NULL) { 1045#if 1 1046 if(xfer->state == FWXF_START) 1047 /* 1048 * This could happen if: 1049 * 1. We call fwohci_arcv() before fwohci_txd(). 1050 * 2. firewire_watch() is called. 1051 */ 1052 printf("fw_xfer_free FWXF_START\n"); 1053#endif 1054 } 1055 xfer->state = FWXF_INIT; 1056 xfer->resp = 0; 1057} 1058/* 1059 * To free IEEE1394 XFER structure. 1060 */ 1061void 1062fw_xfer_free_buf( struct fw_xfer* xfer) 1063{ 1064 if (xfer == NULL) { 1065 printf("%s: xfer == NULL\n", __func__); 1066 return; 1067 } 1068 fw_xfer_unload(xfer); 1069 if(xfer->send.payload != NULL){ 1070 free(xfer->send.payload, xfer->malloc); 1071 } 1072 if(xfer->recv.payload != NULL){ 1073 free(xfer->recv.payload, xfer->malloc); 1074 } 1075 free(xfer, xfer->malloc); 1076} 1077 1078void 1079fw_xfer_free( struct fw_xfer* xfer) 1080{ 1081 if (xfer == NULL) { 1082 printf("%s: xfer == NULL\n", __func__); 1083 return; 1084 } 1085 fw_xfer_unload(xfer); 1086 free(xfer, xfer->malloc); 1087} 1088 1089void 1090fw_asy_callback_free(struct fw_xfer *xfer) 1091{ 1092#if 0 1093 printf("asyreq done state=%d resp=%d\n", 1094 xfer->state, xfer->resp); 1095#endif 1096 fw_xfer_free(xfer); 1097} 1098 1099/* 1100 * To configure PHY. 1101 */ 1102static void 1103fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count) 1104{ 1105 struct fw_xfer *xfer; 1106 struct fw_pkt *fp; 1107 1108 fc->status = FWBUSPHYCONF; 1109 1110 xfer = fw_xfer_alloc(M_FWXFER); 1111 if (xfer == NULL) 1112 return; 1113 xfer->fc = fc; 1114 xfer->hand = fw_asy_callback_free; 1115 1116 fp = &xfer->send.hdr; 1117 fp->mode.ld[1] = 0; 1118 if (root_node >= 0) 1119 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23; 1120 if (gap_count >= 0) 1121 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16; 1122 fp->mode.ld[2] = ~fp->mode.ld[1]; 1123/* XXX Dangerous, how to pass PHY packet to device driver */ 1124 fp->mode.common.tcode |= FWTCODE_PHY; 1125 1126 if (firewire_debug) 1127 printf("send phy_config root_node=%d gap_count=%d\n", 1128 root_node, gap_count); 1129 fw_asyreq(fc, -1, xfer); 1130} 1131 1132#if 0 1133/* 1134 * Dump self ID. 1135 */ 1136static void 1137fw_print_sid(uint32_t sid) 1138{ 1139 union fw_self_id *s; 1140 s = (union fw_self_id *) &sid; 1141 printf("node:%d link:%d gap:%d spd:%d del:%d con:%d pwr:%d" 1142 " p0:%d p1:%d p2:%d i:%d m:%d\n", 1143 s->p0.phy_id, s->p0.link_active, s->p0.gap_count, 1144 s->p0.phy_speed, s->p0.phy_delay, s->p0.contender, 1145 s->p0.power_class, s->p0.port0, s->p0.port1, 1146 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets); 1147} 1148#endif 1149 1150/* 1151 * To receive self ID. 1152 */ 1153void fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len) 1154{ 1155 uint32_t *p; 1156 union fw_self_id *self_id; 1157 u_int i, j, node, c_port = 0, i_branch = 0; 1158 1159 fc->sid_cnt = len /(sizeof(uint32_t) * 2); 1160 fc->status = FWBUSINIT; 1161 fc->max_node = fc->nodeid & 0x3f; 1162 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16; 1163 fc->status = FWBUSCYMELECT; 1164 fc->topology_map->crc_len = 2; 1165 fc->topology_map->generation ++; 1166 fc->topology_map->self_id_count = 0; 1167 fc->topology_map->node_count = 0; 1168 fc->speed_map->generation ++; 1169 fc->speed_map->crc_len = 1 + (64*64 + 3) / 4; 1170 self_id = &fc->topology_map->self_id[0]; 1171 for(i = 0; i < fc->sid_cnt; i ++){ 1172 if (sid[1] != ~sid[0]) { 1173 printf("fw_sidrcv: invalid self-id packet\n"); 1174 sid += 2; 1175 continue; 1176 } 1177 *self_id = *((union fw_self_id *)sid); 1178 fc->topology_map->crc_len++; 1179 if(self_id->p0.sequel == 0){ 1180 fc->topology_map->node_count ++; 1181 c_port = 0; 1182#if 0 1183 fw_print_sid(sid[0]); 1184#endif 1185 node = self_id->p0.phy_id; 1186 if(fc->max_node < node){ 1187 fc->max_node = self_id->p0.phy_id; 1188 } 1189 /* XXX I'm not sure this is the right speed_map */ 1190 fc->speed_map->speed[node][node] 1191 = self_id->p0.phy_speed; 1192 for (j = 0; j < node; j ++) { 1193 fc->speed_map->speed[j][node] 1194 = fc->speed_map->speed[node][j] 1195 = min(fc->speed_map->speed[j][j], 1196 self_id->p0.phy_speed); 1197 } 1198 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) && 1199 (self_id->p0.link_active && self_id->p0.contender)) { 1200 fc->irm = self_id->p0.phy_id; 1201 } 1202 if(self_id->p0.port0 >= 0x2){ 1203 c_port++; 1204 } 1205 if(self_id->p0.port1 >= 0x2){ 1206 c_port++; 1207 } 1208 if(self_id->p0.port2 >= 0x2){ 1209 c_port++; 1210 } 1211 } 1212 if(c_port > 2){ 1213 i_branch += (c_port - 2); 1214 } 1215 sid += 2; 1216 self_id++; 1217 fc->topology_map->self_id_count ++; 1218 } 1219 device_printf(fc->bdev, "%d nodes", fc->max_node + 1); 1220 /* CRC */ 1221 fc->topology_map->crc = fw_crc16( 1222 (uint32_t *)&fc->topology_map->generation, 1223 fc->topology_map->crc_len * 4); 1224 fc->speed_map->crc = fw_crc16( 1225 (uint32_t *)&fc->speed_map->generation, 1226 fc->speed_map->crc_len * 4); 1227 /* byteswap and copy to CSR */ 1228 p = (uint32_t *)fc->topology_map; 1229 for (i = 0; i <= fc->topology_map->crc_len; i++) 1230 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++); 1231 p = (uint32_t *)fc->speed_map; 1232 CSRARC(fc, SPED_MAP) = htonl(*p++); 1233 CSRARC(fc, SPED_MAP + 4) = htonl(*p++); 1234 /* don't byte-swap uint8_t array */ 1235 bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4); 1236 1237 fc->max_hop = fc->max_node - i_branch; 1238 printf(", maxhop <= %d", fc->max_hop); 1239 1240 if(fc->irm == -1 ){ 1241 printf(", Not found IRM capable node"); 1242 }else{ 1243 printf(", cable IRM = %d", fc->irm); 1244 if (fc->irm == fc->nodeid) 1245 printf(" (me)"); 1246 } 1247 printf("\n"); 1248 1249 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) { 1250 if (fc->irm == fc->nodeid) { 1251 fc->status = FWBUSMGRDONE; 1252 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm); 1253 fw_bmr(fc); 1254 } else { 1255 fc->status = FWBUSMGRELECT; 1256 callout_reset(&fc->bmr_callout, hz/8, 1257 (void *)fw_try_bmr, (void *)fc); 1258 } 1259 } else 1260 fc->status = FWBUSMGRDONE; 1261 1262 callout_reset(&fc->busprobe_callout, hz/4, 1263 (void *)fw_bus_probe, (void *)fc); 1264} 1265 1266/* 1267 * To probe devices on the IEEE1394 bus. 1268 */ 1269static void 1270fw_bus_probe(struct firewire_comm *fc) 1271{ 1272 int s; 1273 struct fw_device *fwdev; 1274 1275 s = splfw(); 1276 fc->status = FWBUSEXPLORE; 1277 1278 /* Invalidate all devices, just after bus reset. */ 1279 STAILQ_FOREACH(fwdev, &fc->devices, link) 1280 if (fwdev->status != FWDEVINVAL) { 1281 fwdev->status = FWDEVINVAL; 1282 fwdev->rcnt = 0; 1283 } 1284 splx(s); 1285 1286 wakeup((void *)fc); 1287} 1288 1289static int 1290fw_explore_read_quads(struct fw_device *fwdev, int offset, 1291 uint32_t *quad, int n) 1292{ 1293 struct fw_xfer *xfer; 1294 uint32_t tmp; 1295 int i, error; 1296 1297 for (i = 0; i < n; i ++, offset += sizeof(uint32_t)) { 1298 xfer = fwmem_read_quad(fwdev, NULL, -1, 1299 0xffff, 0xf0000000 | offset, (void *)&tmp, 1300 fw_asy_callback); 1301 if (xfer == NULL) 1302 return (-1); 1303 tsleep((void *)xfer, PWAIT|PCATCH, "rquad", 0); 1304 1305 if (xfer->resp == 0) 1306 quad[i] = ntohl(tmp); 1307 1308 error = xfer->resp; 1309 fw_xfer_free(xfer); 1310 if (error) 1311 return (error); 1312 } 1313 return (0); 1314} 1315 1316 1317static int 1318fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur) 1319{ 1320 int err, i, off; 1321 struct csrdirectory *dir; 1322 struct csrreg *reg; 1323 1324 dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)]; 1325 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1326 (uint32_t *)dir, 1); 1327 if (err) 1328 return (-1); 1329 1330 offset += sizeof(uint32_t); 1331 reg = (struct csrreg *)&fwdev->csrrom[offset/sizeof(uint32_t)]; 1332 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1333 (uint32_t *)reg, dir->crc_len); 1334 if (err) 1335 return (-1); 1336 1337 /* XXX check CRC */ 1338 1339 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1); 1340 if (fwdev->rommax < off) 1341 fwdev->rommax = off; 1342 1343 if (recur == 0) 1344 return (0); 1345 1346 for (i = 0; i < dir->crc_len; i ++, offset += sizeof(uint32_t)) { 1347 if (reg[i].key == CROM_UDIR) 1348 recur = 1; 1349 else if (reg[i].key == CROM_TEXTLEAF) 1350 recur = 0; 1351 else 1352 continue; 1353 1354 off = offset + reg[i].val * sizeof(uint32_t); 1355 if (off > CROMSIZE) { 1356 printf("%s: invalid offset %d\n", __FUNCTION__, off); 1357 return(-1); 1358 } 1359 err = fw_explore_csrblock(fwdev, off, recur); 1360 if (err) 1361 return (-1); 1362 } 1363 return (0); 1364} 1365 1366static int 1367fw_explore_node(struct fw_device *dfwdev) 1368{ 1369 struct firewire_comm *fc; 1370 struct fw_device *fwdev, *pfwdev, *tfwdev; 1371 uint32_t *csr; 1372 struct csrhdr *hdr; 1373 struct bus_info *binfo; 1374 int err, node, spd; 1375 1376 fc = dfwdev->fc; 1377 csr = dfwdev->csrrom; 1378 node = dfwdev->dst; 1379 1380 /* First quad */ 1381 err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1); 1382 if (err) 1383 return (-1); 1384 hdr = (struct csrhdr *)&csr[0]; 1385 if (hdr->info_len != 4) { 1386 if (firewire_debug) 1387 printf("node%d: wrong bus info len(%d)\n", 1388 node, hdr->info_len); 1389 return (-1); 1390 } 1391 1392 /* bus info */ 1393 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); 1394 if (err) 1395 return (-1); 1396 binfo = (struct bus_info *)&csr[1]; 1397 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { 1398 if (firewire_debug) 1399 printf("node%d: invalid bus name 0x%08x\n", 1400 node, binfo->bus_name); 1401 return (-1); 1402 } 1403 spd = fc->speed_map->speed[fc->nodeid][node]; 1404 STAILQ_FOREACH(fwdev, &fc->devices, link) 1405 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) 1406 break; 1407 if (fwdev == NULL) { 1408 /* new device */ 1409 fwdev = malloc(sizeof(struct fw_device), M_FW, 1410 M_NOWAIT | M_ZERO); 1411 if (fwdev == NULL) { 1412 if (firewire_debug) 1413 printf("node%d: no memory\n", node); 1414 return (-1); 1415 } 1416 fwdev->fc = fc; 1417 fwdev->eui = binfo->eui64; 1418 /* inesrt into sorted fwdev list */ 1419 pfwdev = NULL; 1420 STAILQ_FOREACH(tfwdev, &fc->devices, link) { 1421 if (tfwdev->eui.hi > fwdev->eui.hi || 1422 (tfwdev->eui.hi == fwdev->eui.hi && 1423 tfwdev->eui.lo > fwdev->eui.lo)) 1424 break; 1425 pfwdev = tfwdev; 1426 } 1427 if (pfwdev == NULL) 1428 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link); 1429 else 1430 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link); 1431 1432 device_printf(fc->bdev, "New %s device ID:%08x%08x\n", 1433 linkspeed[spd], 1434 fwdev->eui.hi, fwdev->eui.lo); 1435 } 1436 fwdev->dst = node; 1437 fwdev->status = FWDEVINIT; 1438 fwdev->speed = spd; 1439 1440 /* unchanged ? */ 1441 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) { 1442 if (firewire_debug) 1443 printf("node%d: crom unchanged\n", node); 1444 return (0); 1445 } 1446 1447 bzero(&fwdev->csrrom[0], CROMSIZE); 1448 1449 /* copy first quad and bus info block */ 1450 bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5); 1451 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; 1452 1453 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ 1454 1455 if (err) { 1456 fwdev->status = FWDEVINVAL; 1457 fwdev->csrrom[0] = 0; 1458 } 1459 return (err); 1460 1461} 1462 1463/* 1464 * Find the self_id packet for a node, ignoring sequels. 1465 */ 1466static union fw_self_id * 1467fw_find_self_id(struct firewire_comm *fc, int node) 1468{ 1469 uint32_t i; 1470 union fw_self_id *s; 1471 1472 for (i = 0; i < fc->topology_map->self_id_count; i++) { 1473 s = &fc->topology_map->self_id[i]; 1474 if (s->p0.sequel) 1475 continue; 1476 if (s->p0.phy_id == node) 1477 return s; 1478 } 1479 return 0; 1480} 1481 1482static void 1483fw_explore(struct firewire_comm *fc) 1484{ 1485 int node, err, s, i, todo, todo2, trys; 1486 char nodes[63]; 1487 struct fw_device dfwdev; 1488 union fw_self_id *fwsid; 1489 1490 todo = 0; 1491 /* setup dummy fwdev */ 1492 dfwdev.fc = fc; 1493 dfwdev.speed = 0; 1494 dfwdev.maxrec = 8; /* 512 */ 1495 dfwdev.status = FWDEVINIT; 1496 1497 for (node = 0; node <= fc->max_node; node ++) { 1498 /* We don't probe myself and linkdown nodes */ 1499 if (node == fc->nodeid) 1500 continue; 1501 fwsid = fw_find_self_id(fc, node); 1502 if (!fwsid || !fwsid->p0.link_active) { 1503 if (firewire_debug) 1504 printf("node%d: link down\n", node); 1505 continue; 1506 } 1507 nodes[todo++] = node; 1508 } 1509 1510 s = splfw(); 1511 for (trys = 0; todo > 0 && trys < 3; trys ++) { 1512 todo2 = 0; 1513 for (i = 0; i < todo; i ++) { 1514 dfwdev.dst = nodes[i]; 1515 err = fw_explore_node(&dfwdev); 1516 if (err) 1517 nodes[todo2++] = nodes[i]; 1518 if (firewire_debug) 1519 printf("%s: node %d, err = %d\n", 1520 __FUNCTION__, node, err); 1521 } 1522 todo = todo2; 1523 } 1524 splx(s); 1525} 1526 1527 1528static void 1529fw_bus_probe_thread(void *arg) 1530{ 1531 struct firewire_comm *fc; 1532 1533 fc = (struct firewire_comm *)arg; 1534 1535 mtx_lock(&Giant); 1536 while (1) { 1537 if (fc->status == FWBUSEXPLORE) { 1538 fw_explore(fc); 1539 fc->status = FWBUSEXPDONE; 1540 if (firewire_debug) 1541 printf("bus_explore done\n"); 1542 fw_attach_dev(fc); 1543 } else if (fc->status == FWBUSDETACH) 1544 break; 1545 tsleep((void *)fc, PWAIT|PCATCH, "-", 0); 1546 } 1547 mtx_unlock(&Giant); 1548 wakeup(fc); 1549 kthread_exit(0); 1550} 1551 1552/* 1553 * To attach sub-devices layer onto IEEE1394 bus. 1554 */ 1555static void 1556fw_attach_dev(struct firewire_comm *fc) 1557{ 1558 struct fw_device *fwdev, *next; 1559 int i, err; 1560 device_t *devlistp; 1561 int devcnt; 1562 struct firewire_dev_comm *fdc; 1563 1564 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { 1565 next = STAILQ_NEXT(fwdev, link); 1566 if (fwdev->status == FWDEVINIT) { 1567 fwdev->status = FWDEVATTACHED; 1568 } else if (fwdev->status == FWDEVINVAL) { 1569 fwdev->rcnt ++; 1570 if (fwdev->rcnt > hold_count) { 1571 /* 1572 * Remove devices which have not been seen 1573 * for a while. 1574 */ 1575 STAILQ_REMOVE(&fc->devices, fwdev, fw_device, 1576 link); 1577 free(fwdev, M_FW); 1578 } 1579 } 1580 } 1581 1582 err = device_get_children(fc->bdev, &devlistp, &devcnt); 1583 if( err != 0 ) 1584 return; 1585 for( i = 0 ; i < devcnt ; i++){ 1586 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 1587 fdc = device_get_softc(devlistp[i]); 1588 if (fdc->post_explore != NULL) 1589 fdc->post_explore(fdc); 1590 } 1591 } 1592 free(devlistp, M_TEMP); 1593 1594 return; 1595} 1596 1597/* 1598 * To allocate unique transaction label. 1599 */ 1600static int 1601fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer) 1602{ 1603 u_int i; 1604 struct fw_xfer *txfer; 1605 int s; 1606 static uint32_t label = 0; 1607 1608 s = splfw(); 1609 for( i = 0 ; i < 0x40 ; i ++){ 1610 label = (label + 1) & 0x3f; 1611 STAILQ_FOREACH(txfer, &fc->tlabels[label], tlabel) 1612 if (txfer->send.hdr.mode.hdr.dst == 1613 xfer->send.hdr.mode.hdr.dst) 1614 break; 1615 if(txfer == NULL) { 1616 STAILQ_INSERT_TAIL(&fc->tlabels[label], xfer, tlabel); 1617 splx(s); 1618 if (firewire_debug > 1) 1619 printf("fw_get_tlabel: dst=%d tl=%d\n", 1620 xfer->send.hdr.mode.hdr.dst, label); 1621 return(label); 1622 } 1623 } 1624 splx(s); 1625 1626 if (firewire_debug > 1) 1627 printf("fw_get_tlabel: no free tlabel\n"); 1628 return(-1); 1629} 1630 1631static void 1632fw_rcv_copy(struct fw_rcv_buf *rb) 1633{ 1634 struct fw_pkt *pkt; 1635 u_char *p; 1636 struct tcode_info *tinfo; 1637 u_int res, i, len, plen; 1638 1639 rb->xfer->recv.spd = rb->spd; 1640 1641 pkt = (struct fw_pkt *)rb->vec->iov_base; 1642 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode]; 1643 1644 /* Copy header */ 1645 p = (u_char *)&rb->xfer->recv.hdr; 1646 bcopy(rb->vec->iov_base, p, tinfo->hdr_len); 1647 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len; 1648 rb->vec->iov_len -= tinfo->hdr_len; 1649 1650 /* Copy payload */ 1651 p = (u_char *)rb->xfer->recv.payload; 1652 res = rb->xfer->recv.pay_len; 1653 1654 /* special handling for RRESQ */ 1655 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ && 1656 p != NULL && res >= sizeof(uint32_t)) { 1657 *(uint32_t *)p = pkt->mode.rresq.data; 1658 rb->xfer->recv.pay_len = sizeof(uint32_t); 1659 return; 1660 } 1661 1662 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0) 1663 return; 1664 1665 plen = pkt->mode.rresb.len; 1666 1667 for (i = 0; i < rb->nvec; i++, rb->vec++) { 1668 len = MIN(rb->vec->iov_len, plen); 1669 if (res < len) { 1670 printf("rcv buffer(%d) is %d bytes short.\n", 1671 rb->xfer->recv.pay_len, len - res); 1672 len = res; 1673 } 1674 bcopy(rb->vec->iov_base, p, len); 1675 p += len; 1676 res -= len; 1677 plen -= len; 1678 if (res == 0 || plen == 0) 1679 break; 1680 } 1681 rb->xfer->recv.pay_len -= res; 1682 1683} 1684 1685/* 1686 * Generic packet receiving process. 1687 */ 1688void 1689fw_rcv(struct fw_rcv_buf *rb) 1690{ 1691 struct fw_pkt *fp, *resfp; 1692 struct fw_bind *bind; 1693 int tcode; 1694 int i, len, oldstate; 1695#if 0 1696 { 1697 uint32_t *qld; 1698 int i; 1699 qld = (uint32_t *)buf; 1700 printf("spd %d len:%d\n", spd, len); 1701 for( i = 0 ; i <= len && i < 32; i+= 4){ 1702 printf("0x%08x ", ntohl(qld[i/4])); 1703 if((i % 16) == 15) printf("\n"); 1704 } 1705 if((i % 16) != 15) printf("\n"); 1706 } 1707#endif 1708 fp = (struct fw_pkt *)rb->vec[0].iov_base; 1709 tcode = fp->mode.common.tcode; 1710 switch (tcode) { 1711 case FWTCODE_WRES: 1712 case FWTCODE_RRESQ: 1713 case FWTCODE_RRESB: 1714 case FWTCODE_LRES: 1715 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1716 fp->mode.hdr.tlrt >> 2); 1717 if(rb->xfer == NULL) { 1718 printf("fw_rcv: unknown response " 1719 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n", 1720 tcode_str[tcode], tcode, 1721 fp->mode.hdr.src, 1722 fp->mode.hdr.tlrt >> 2, 1723 fp->mode.hdr.tlrt & 3, 1724 fp->mode.rresq.data); 1725#if 1 1726 printf("try ad-hoc work around!!\n"); 1727 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1728 (fp->mode.hdr.tlrt >> 2)^3); 1729 if (rb->xfer == NULL) { 1730 printf("no use...\n"); 1731 return; 1732 } 1733#else 1734 return; 1735#endif 1736 } 1737 fw_rcv_copy(rb); 1738 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP) 1739 rb->xfer->resp = EIO; 1740 else 1741 rb->xfer->resp = 0; 1742 /* make sure the packet is drained in AT queue */ 1743 oldstate = rb->xfer->state; 1744 rb->xfer->state = FWXF_RCVD; 1745 switch (oldstate) { 1746 case FWXF_SENT: 1747 fw_xfer_done(rb->xfer); 1748 break; 1749 case FWXF_START: 1750#if 0 1751 if (firewire_debug) 1752 printf("not sent yet tl=%x\n", rb->xfer->tl); 1753#endif 1754 break; 1755 default: 1756 printf("unexpected state %d\n", rb->xfer->state); 1757 } 1758 return; 1759 case FWTCODE_WREQQ: 1760 case FWTCODE_WREQB: 1761 case FWTCODE_RREQQ: 1762 case FWTCODE_RREQB: 1763 case FWTCODE_LREQ: 1764 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi, 1765 fp->mode.rreqq.dest_lo); 1766 if(bind == NULL){ 1767 printf("Unknown service addr 0x%04x:0x%08x %s(%x)" 1768#if defined(__DragonFly__) || __FreeBSD_version < 500000 1769 " src=0x%x data=%lx\n", 1770#else 1771 " src=0x%x data=%x\n", 1772#endif 1773 fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo, 1774 tcode_str[tcode], tcode, 1775 fp->mode.hdr.src, ntohl(fp->mode.wreqq.data)); 1776 if (rb->fc->status == FWBUSRESET) { 1777 printf("fw_rcv: cannot respond(bus reset)!\n"); 1778 return; 1779 } 1780 rb->xfer = fw_xfer_alloc(M_FWXFER); 1781 if(rb->xfer == NULL){ 1782 return; 1783 } 1784 rb->xfer->send.spd = rb->spd; 1785 rb->xfer->send.pay_len = 0; 1786 resfp = &rb->xfer->send.hdr; 1787 switch (tcode) { 1788 case FWTCODE_WREQQ: 1789 case FWTCODE_WREQB: 1790 resfp->mode.hdr.tcode = FWTCODE_WRES; 1791 break; 1792 case FWTCODE_RREQQ: 1793 resfp->mode.hdr.tcode = FWTCODE_RRESQ; 1794 break; 1795 case FWTCODE_RREQB: 1796 resfp->mode.hdr.tcode = FWTCODE_RRESB; 1797 break; 1798 case FWTCODE_LREQ: 1799 resfp->mode.hdr.tcode = FWTCODE_LRES; 1800 break; 1801 } 1802 resfp->mode.hdr.dst = fp->mode.hdr.src; 1803 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt; 1804 resfp->mode.hdr.pri = fp->mode.hdr.pri; 1805 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR; 1806 resfp->mode.rresb.extcode = 0; 1807 resfp->mode.rresb.len = 0; 1808/* 1809 rb->xfer->hand = fw_asy_callback; 1810*/ 1811 rb->xfer->hand = fw_xfer_free; 1812 if(fw_asyreq(rb->fc, -1, rb->xfer)){ 1813 fw_xfer_free(rb->xfer); 1814 return; 1815 } 1816 return; 1817 } 1818 len = 0; 1819 for (i = 0; i < rb->nvec; i ++) 1820 len += rb->vec[i].iov_len; 1821 rb->xfer = STAILQ_FIRST(&bind->xferlist); 1822 if (rb->xfer == NULL) { 1823#if 1 1824 printf("Discard a packet for this bind.\n"); 1825#endif 1826 return; 1827 } 1828 STAILQ_REMOVE_HEAD(&bind->xferlist, link); 1829 fw_rcv_copy(rb); 1830 rb->xfer->hand(rb->xfer); 1831 return; 1832#if 0 /* shouldn't happen ?? or for GASP */ 1833 case FWTCODE_STREAM: 1834 { 1835 struct fw_xferq *xferq; 1836 1837 xferq = rb->fc->ir[sub]; 1838#if 0 1839 printf("stream rcv dma %d len %d off %d spd %d\n", 1840 sub, len, off, spd); 1841#endif 1842 if(xferq->queued >= xferq->maxq) { 1843 printf("receive queue is full\n"); 1844 return; 1845 } 1846 /* XXX get xfer from xfer queue, we don't need copy for 1847 per packet mode */ 1848 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */ 1849 vec[0].iov_len); 1850 if (rb->xfer == NULL) 1851 return; 1852 fw_rcv_copy(rb) 1853 s = splfw(); 1854 xferq->queued++; 1855 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link); 1856 splx(s); 1857 sc = device_get_softc(rb->fc->bdev); 1858#if defined(__DragonFly__) || __FreeBSD_version < 500000 1859 if (&xferq->rsel.si_pid != 0) 1860#else 1861 if (SEL_WAITING(&xferq->rsel)) 1862#endif 1863 selwakeuppri(&xferq->rsel, FWPRI); 1864 if (xferq->flag & FWXFERQ_WAKEUP) { 1865 xferq->flag &= ~FWXFERQ_WAKEUP; 1866 wakeup((caddr_t)xferq); 1867 } 1868 if (xferq->flag & FWXFERQ_HANDLER) { 1869 xferq->hand(xferq); 1870 } 1871 return; 1872 break; 1873 } 1874#endif 1875 default: 1876 printf("fw_rcv: unknow tcode %d\n", tcode); 1877 break; 1878 } 1879} 1880 1881/* 1882 * Post process for Bus Manager election process. 1883 */ 1884static void 1885fw_try_bmr_callback(struct fw_xfer *xfer) 1886{ 1887 struct firewire_comm *fc; 1888 int bmr; 1889 1890 if (xfer == NULL) 1891 return; 1892 fc = xfer->fc; 1893 if (xfer->resp != 0) 1894 goto error; 1895 if (xfer->recv.payload == NULL) 1896 goto error; 1897 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE) 1898 goto error; 1899 1900 bmr = ntohl(xfer->recv.payload[0]); 1901 if (bmr == 0x3f) 1902 bmr = fc->nodeid; 1903 1904 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f); 1905 fw_xfer_free_buf(xfer); 1906 fw_bmr(fc); 1907 return; 1908 1909error: 1910 device_printf(fc->bdev, "bus manager election failed\n"); 1911 fw_xfer_free_buf(xfer); 1912} 1913 1914 1915/* 1916 * To candidate Bus Manager election process. 1917 */ 1918static void 1919fw_try_bmr(void *arg) 1920{ 1921 struct fw_xfer *xfer; 1922 struct firewire_comm *fc = (struct firewire_comm *)arg; 1923 struct fw_pkt *fp; 1924 int err = 0; 1925 1926 xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4); 1927 if(xfer == NULL){ 1928 return; 1929 } 1930 xfer->send.spd = 0; 1931 fc->status = FWBUSMGRELECT; 1932 1933 fp = &xfer->send.hdr; 1934 fp->mode.lreq.dest_hi = 0xffff; 1935 fp->mode.lreq.tlrt = 0; 1936 fp->mode.lreq.tcode = FWTCODE_LREQ; 1937 fp->mode.lreq.pri = 0; 1938 fp->mode.lreq.src = 0; 1939 fp->mode.lreq.len = 8; 1940 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP; 1941 fp->mode.lreq.dst = FWLOCALBUS | fc->irm; 1942 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID; 1943 xfer->send.payload[0] = htonl(0x3f); 1944 xfer->send.payload[1] = htonl(fc->nodeid); 1945 xfer->hand = fw_try_bmr_callback; 1946 1947 err = fw_asyreq(fc, -1, xfer); 1948 if(err){ 1949 fw_xfer_free_buf(xfer); 1950 return; 1951 } 1952 return; 1953} 1954 1955#ifdef FW_VMACCESS 1956/* 1957 * Software implementation for physical memory block access. 1958 * XXX:Too slow, usef for debug purpose only. 1959 */ 1960static void 1961fw_vmaccess(struct fw_xfer *xfer){ 1962 struct fw_pkt *rfp, *sfp = NULL; 1963 uint32_t *ld = (uint32_t *)xfer->recv.buf; 1964 1965 printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n", 1966 xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3])); 1967 printf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7])); 1968 if(xfer->resp != 0){ 1969 fw_xfer_free( xfer); 1970 return; 1971 } 1972 if(xfer->recv.buf == NULL){ 1973 fw_xfer_free( xfer); 1974 return; 1975 } 1976 rfp = (struct fw_pkt *)xfer->recv.buf; 1977 switch(rfp->mode.hdr.tcode){ 1978 /* XXX need fix for 64bit arch */ 1979 case FWTCODE_WREQB: 1980 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 1981 xfer->send.len = 12; 1982 sfp = (struct fw_pkt *)xfer->send.buf; 1983 bcopy(rfp->mode.wreqb.payload, 1984 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len)); 1985 sfp->mode.wres.tcode = FWTCODE_WRES; 1986 sfp->mode.wres.rtcode = 0; 1987 break; 1988 case FWTCODE_WREQQ: 1989 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 1990 xfer->send.len = 12; 1991 sfp->mode.wres.tcode = FWTCODE_WRES; 1992 *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data; 1993 sfp->mode.wres.rtcode = 0; 1994 break; 1995 case FWTCODE_RREQB: 1996 xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT); 1997 xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len); 1998 sfp = (struct fw_pkt *)xfer->send.buf; 1999 bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo), 2000 sfp->mode.rresb.payload, (uint16_t)ntohs(rfp->mode.rreqb.len)); 2001 sfp->mode.rresb.tcode = FWTCODE_RRESB; 2002 sfp->mode.rresb.len = rfp->mode.rreqb.len; 2003 sfp->mode.rresb.rtcode = 0; 2004 sfp->mode.rresb.extcode = 0; 2005 break; 2006 case FWTCODE_RREQQ: 2007 xfer->send.buf = malloc(16, M_FW, M_NOWAIT); 2008 xfer->send.len = 16; 2009 sfp = (struct fw_pkt *)xfer->send.buf; 2010 sfp->mode.rresq.data = *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo)); 2011 sfp->mode.wres.tcode = FWTCODE_RRESQ; 2012 sfp->mode.rresb.rtcode = 0; 2013 break; 2014 default: 2015 fw_xfer_free( xfer); 2016 return; 2017 } 2018 sfp->mode.hdr.dst = rfp->mode.hdr.src; 2019 xfer->dst = ntohs(rfp->mode.hdr.src); 2020 xfer->hand = fw_xfer_free; 2021 2022 sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt; 2023 sfp->mode.hdr.pri = 0; 2024 2025 fw_asyreq(xfer->fc, -1, xfer); 2026/**/ 2027 return; 2028} 2029#endif 2030 2031/* 2032 * CRC16 check-sum for IEEE1394 register blocks. 2033 */ 2034uint16_t 2035fw_crc16(uint32_t *ptr, uint32_t len){ 2036 uint32_t i, sum, crc = 0; 2037 int shift; 2038 len = (len + 3) & ~3; 2039 for(i = 0 ; i < len ; i+= 4){ 2040 for( shift = 28 ; shift >= 0 ; shift -= 4){ 2041 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf; 2042 crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum; 2043 } 2044 crc &= 0xffff; 2045 } 2046 return((uint16_t) crc); 2047} 2048 2049static int 2050fw_bmr(struct firewire_comm *fc) 2051{ 2052 struct fw_device fwdev; 2053 union fw_self_id *self_id; 2054 int cmstr; 2055 uint32_t quad; 2056 2057 /* Check to see if the current root node is cycle master capable */ 2058 self_id = fw_find_self_id(fc, fc->max_node); 2059 if (fc->max_node > 0) { 2060 /* XXX check cmc bit of businfo block rather than contender */ 2061 if (self_id->p0.link_active && self_id->p0.contender) 2062 cmstr = fc->max_node; 2063 else { 2064 device_printf(fc->bdev, 2065 "root node is not cycle master capable\n"); 2066 /* XXX shall we be the cycle master? */ 2067 cmstr = fc->nodeid; 2068 /* XXX need bus reset */ 2069 } 2070 } else 2071 cmstr = -1; 2072 2073 device_printf(fc->bdev, "bus manager %d ", CSRARC(fc, BUS_MGR_ID)); 2074 if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) { 2075 /* We are not the bus manager */ 2076 printf("\n"); 2077 return(0); 2078 } 2079 printf("(me)\n"); 2080 2081 /* Optimize gapcount */ 2082 if(fc->max_hop <= MAX_GAPHOP ) 2083 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]); 2084 /* If we are the cycle master, nothing to do */ 2085 if (cmstr == fc->nodeid || cmstr == -1) 2086 return 0; 2087 /* Bus probe has not finished, make dummy fwdev for cmstr */ 2088 bzero(&fwdev, sizeof(fwdev)); 2089 fwdev.fc = fc; 2090 fwdev.dst = cmstr; 2091 fwdev.speed = 0; 2092 fwdev.maxrec = 8; /* 512 */ 2093 fwdev.status = FWDEVINIT; 2094 /* Set cmstr bit on the cycle master */ 2095 quad = htonl(1 << 8); 2096 fwmem_write_quad(&fwdev, NULL, 0/*spd*/, 2097 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free); 2098 2099 return 0; 2100} 2101 2102static int 2103fw_modevent(module_t mode, int type, void *data) 2104{ 2105 int err = 0; 2106#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 2107 static eventhandler_tag fwdev_ehtag = NULL; 2108#endif 2109 2110 switch (type) { 2111 case MOD_LOAD: 2112#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 2113 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone, 2114 fwdev_clone, 0, 1000); 2115#endif 2116 break; 2117 case MOD_UNLOAD: 2118#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 2119 if (fwdev_ehtag != NULL) 2120 EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag); 2121#endif 2122 break; 2123 case MOD_SHUTDOWN: 2124 break; 2125 default: 2126 return (EOPNOTSUPP); 2127 } 2128 return (err); 2129} 2130 2131 2132#ifdef __DragonFly__ 2133DECLARE_DUMMY_MODULE(firewire); 2134#endif 2135DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0); 2136MODULE_VERSION(firewire, 1); 2137