firewire.c revision 170374
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 170374 2007-06-06 14:31:36Z 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 if (info->flag & FWTI_REQ) 224 xferq = fc->atq; 225 else 226 xferq = fc->ats; 227 len = info->hdr_len; 228 if (xfer->send.pay_len > MAXREC(fc->maxrec)) { 229 printf("send.pay_len > maxrec\n"); 230 return EINVAL; 231 } 232 if (info->flag & FWTI_BLOCK_STR) 233 len = fp->mode.stream.len; 234 else if (info->flag & FWTI_BLOCK_ASY) 235 len = fp->mode.rresb.len; 236 else 237 len = 0; 238 if (len != xfer->send.pay_len){ 239 printf("len(%d) != send.pay_len(%d) %s(%x)\n", 240 len, xfer->send.pay_len, tcode_str[tcode], tcode); 241 return EINVAL; 242 } 243 244 if(xferq->start == NULL){ 245 printf("xferq->start == NULL\n"); 246 return EINVAL; 247 } 248 if(!(xferq->queued < xferq->maxq)){ 249 device_printf(fc->bdev, "Discard a packet (queued=%d)\n", 250 xferq->queued); 251 return EAGAIN; 252 } 253 254 xfer->tl = -1; 255 if (info->flag & FWTI_TLABEL) { 256 if (fw_get_tlabel(fc, xfer) < 0) 257 return EAGAIN; 258 } 259 260 xfer->resp = 0; 261 xfer->fc = fc; 262 xfer->q = xferq; 263 264 fw_asystart(xfer); 265 return err; 266} 267/* 268 * Wakeup blocked process. 269 */ 270void 271fw_xferwake(struct fw_xfer *xfer) 272{ 273 struct mtx *lock = &xfer->fc->wait_lock; 274 275 mtx_lock(lock); 276 xfer->flag |= FWXF_WAKE; 277 mtx_unlock(lock); 278 279 wakeup(xfer); 280 return; 281} 282 283int 284fw_xferwait(struct fw_xfer *xfer) 285{ 286 struct mtx *lock = &xfer->fc->wait_lock; 287 int err = 0; 288 289 mtx_lock(lock); 290 if ((xfer->flag & FWXF_WAKE) == 0) 291 err = msleep((void *)xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0); 292 mtx_unlock(lock); 293 294 return (err); 295} 296 297/* 298 * Async. request with given xfer structure. 299 */ 300static void 301fw_asystart(struct fw_xfer *xfer) 302{ 303 struct firewire_comm *fc = xfer->fc; 304 int s; 305#if 0 /* XXX allow bus explore packets only after bus rest */ 306 if (fc->status < FWBUSEXPLORE) { 307 xfer->resp = EAGAIN; 308 xfer->flag = FWXF_BUSY; 309 if (xfer->hand != NULL) 310 xfer->hand(xfer); 311 return; 312 } 313#endif 314 s = splfw(); 315 /* Protect from interrupt/timeout */ 316 FW_GLOCK(fc); 317 microtime(&xfer->tv); 318 xfer->flag = FWXF_INQ; 319 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); 320#if 0 321 xfer->q->queued ++; 322#endif 323 FW_GUNLOCK(fc); 324 splx(s); 325 /* XXX just queue for mbuf */ 326 if (xfer->mbuf == NULL) 327 xfer->q->start(fc); 328 return; 329} 330 331static void 332firewire_identify(driver_t *driver, device_t parent) 333{ 334 BUS_ADD_CHILD(parent, 0, "firewire", -1); 335} 336 337static int 338firewire_probe(device_t dev) 339{ 340 device_set_desc(dev, "IEEE1394(FireWire) bus"); 341 return (0); 342} 343 344static void 345firewire_xfer_timeout(void *arg, int pending) 346{ 347 struct firewire_comm *fc = (struct firewire_comm *)arg; 348 struct fw_xfer *xfer, *txfer; 349 struct timeval tv; 350 struct timeval split_timeout; 351 STAILQ_HEAD(, fw_xfer) xfer_timeout; 352 int i, s; 353 354 split_timeout.tv_sec = 0; 355 split_timeout.tv_usec = 200 * 1000; /* 200 msec */ 356 357 microtime(&tv); 358 timevalsub(&tv, &split_timeout); 359 STAILQ_INIT(&xfer_timeout); 360 361 s = splfw(); 362 FW_GLOCK(fc); 363 for (i = 0; i < 0x40; i ++) { 364 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 365 if (timevalcmp(&xfer->tv, &tv, >)) 366 /* the rests are newer than this */ 367 break; 368 if ((xfer->flag & FWXF_SENT) == 0) 369 /* not sent yet */ 370 break; 371 device_printf(fc->bdev, 372 "split transaction timeout: " 373 "tl=0x%x flag=0x%02x\n", i, xfer->flag); 374 fw_dump_hdr(&xfer->send.hdr, "send"); 375 xfer->resp = ETIMEDOUT; 376 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 377 STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel); 378 } 379 } 380 FW_GUNLOCK(fc); 381 splx(s); 382 fc->timeout(fc); 383 384 STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer) 385 xfer->hand(xfer); 386} 387 388#define WATCHDOG_HZ 10 389static void 390firewire_watchdog(void *arg) 391{ 392 struct firewire_comm *fc; 393 static int watchdog_clock = 0; 394 395 fc = (struct firewire_comm *)arg; 396 397 /* 398 * At boot stage, the device interrupt is disabled and 399 * We encounter a timeout easily. To avoid this, 400 * ignore clock interrupt for a while. 401 */ 402 if (watchdog_clock > WATCHDOG_HZ * 15) 403 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout); 404 else 405 watchdog_clock ++; 406 407 callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ, 408 (void *)firewire_watchdog, (void *)fc); 409} 410 411/* 412 * The attach routine. 413 */ 414static int 415firewire_attach(device_t dev) 416{ 417 int unit; 418 struct firewire_softc *sc = device_get_softc(dev); 419 device_t pa = device_get_parent(dev); 420 struct firewire_comm *fc; 421 422 fc = (struct firewire_comm *)device_get_softc(pa); 423 sc->fc = fc; 424 fc->status = FWBUSNOTREADY; 425 426 unit = device_get_unit(dev); 427 if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA; 428 429 fwdev_makedev(sc); 430 431 mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF); 432 CALLOUT_INIT(&fc->timeout_callout); 433 CALLOUT_INIT(&fc->bmr_callout); 434 CALLOUT_INIT(&fc->busprobe_callout); 435 TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, (void *)fc); 436 437 callout_reset(&sc->fc->timeout_callout, hz, 438 (void *)firewire_watchdog, (void *)sc->fc); 439 440 /* create thread */ 441 kthread_create(fw_bus_probe_thread, (void *)fc, &fc->probe_thread, 442 0, 0, "fw%d_probe", unit); 443 444 /* Locate our children */ 445 bus_generic_probe(dev); 446 447 /* launch attachement of the added children */ 448 bus_generic_attach(dev); 449 450 /* bus_reset */ 451 fw_busreset(fc, FWBUSNOTREADY); 452 fc->ibr(fc); 453 454 return 0; 455} 456 457/* 458 * Attach it as child. 459 */ 460static device_t 461firewire_add_child(device_t dev, int order, const char *name, int unit) 462{ 463 device_t child; 464 struct firewire_softc *sc; 465 466 sc = (struct firewire_softc *)device_get_softc(dev); 467 child = device_add_child(dev, name, unit); 468 if (child) { 469 device_set_ivars(child, sc->fc); 470 device_probe_and_attach(child); 471 } 472 473 return child; 474} 475 476static int 477firewire_resume(device_t dev) 478{ 479 struct firewire_softc *sc; 480 481 sc = (struct firewire_softc *)device_get_softc(dev); 482 sc->fc->status = FWBUSNOTREADY; 483 484 bus_generic_resume(dev); 485 486 return(0); 487} 488 489/* 490 * Dettach it. 491 */ 492static int 493firewire_detach(device_t dev) 494{ 495 struct firewire_softc *sc; 496 struct firewire_comm *fc; 497 struct fw_device *fwdev, *fwdev_next; 498 int err; 499 500 sc = (struct firewire_softc *)device_get_softc(dev); 501 fc = sc->fc; 502 mtx_lock(&fc->wait_lock); 503 fc->status = FWBUSDETACH; 504 wakeup(fc); 505 if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60)) 506 printf("firewire probe thread didn't die\n"); 507 mtx_unlock(&fc->wait_lock); 508 509 if ((err = fwdev_destroydev(sc)) != 0) 510 return err; 511 512 if ((err = bus_generic_detach(dev)) != 0) 513 return err; 514 515 callout_stop(&fc->timeout_callout); 516 callout_stop(&fc->bmr_callout); 517 callout_stop(&fc->busprobe_callout); 518 519 /* XXX xfree_free and untimeout on all xfers */ 520 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; 521 fwdev = fwdev_next) { 522 fwdev_next = STAILQ_NEXT(fwdev, link); 523 free(fwdev, M_FW); 524 } 525 free(fc->topology_map, M_FW); 526 free(fc->speed_map, M_FW); 527 free(fc->crom_src_buf, M_FW); 528 529 mtx_destroy(&fc->wait_lock); 530 return(0); 531} 532#if 0 533static int 534firewire_shutdown( device_t dev ) 535{ 536 return 0; 537} 538#endif 539 540 541static void 542fw_xferq_drain(struct fw_xferq *xferq) 543{ 544 struct fw_xfer *xfer; 545 546 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) { 547 STAILQ_REMOVE_HEAD(&xferq->q, link); 548#if 0 549 xferq->queued --; 550#endif 551 xfer->resp = EAGAIN; 552 xfer->flag = FWXF_SENTERR; 553 fw_xfer_done(xfer); 554 } 555} 556 557void 558fw_drain_txq(struct firewire_comm *fc) 559{ 560 struct fw_xfer *xfer, *txfer; 561 STAILQ_HEAD(, fw_xfer) xfer_drain; 562 int i; 563 564 STAILQ_INIT(&xfer_drain); 565 566 FW_GLOCK(fc); 567 fw_xferq_drain(fc->atq); 568 fw_xferq_drain(fc->ats); 569 for(i = 0; i < fc->nisodma; i++) 570 fw_xferq_drain(fc->it[i]); 571 572 for (i = 0; i < 0x40; i ++) 573 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 574 if (firewire_debug) 575 printf("tl=%d flag=%d\n", i, xfer->flag); 576 xfer->resp = EAGAIN; 577 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 578 STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel); 579 } 580 FW_GUNLOCK(fc); 581 582 STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer) 583 xfer->hand(xfer); 584} 585 586static void 587fw_reset_csr(struct firewire_comm *fc) 588{ 589 int i; 590 591 CSRARC(fc, STATE_CLEAR) 592 = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ; 593 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 594 CSRARC(fc, NODE_IDS) = 0x3f; 595 596 CSRARC(fc, TOPO_MAP + 8) = 0; 597 fc->irm = -1; 598 599 fc->max_node = -1; 600 601 for(i = 2; i < 0x100/4 - 2 ; i++){ 602 CSRARC(fc, SPED_MAP + i * 4) = 0; 603 } 604 CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ; 605 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 606 CSRARC(fc, RESET_START) = 0; 607 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0; 608 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19; 609 CSRARC(fc, CYCLE_TIME) = 0x0; 610 CSRARC(fc, BUS_TIME) = 0x0; 611 CSRARC(fc, BUS_MGR_ID) = 0x3f; 612 CSRARC(fc, BANDWIDTH_AV) = 4915; 613 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; 614 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; 615 CSRARC(fc, IP_CHANNELS) = (1 << 31); 616 617 CSRARC(fc, CONF_ROM) = 0x04 << 24; 618 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */ 619 CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 | 620 1 << 28 | 0xff << 16 | 0x09 << 8; 621 CSRARC(fc, CONF_ROM + 0xc) = 0; 622 623/* DV depend CSRs see blue book */ 624 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON; 625 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON; 626 627 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 ); 628 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 629} 630 631static void 632fw_init_crom(struct firewire_comm *fc) 633{ 634 struct crom_src *src; 635 636 fc->crom_src_buf = (struct crom_src_buf *) 637 malloc(sizeof(struct crom_src_buf), M_FW, M_WAITOK | M_ZERO); 638 if (fc->crom_src_buf == NULL) 639 return; 640 641 src = &fc->crom_src_buf->src; 642 bzero(src, sizeof(struct crom_src)); 643 644 /* BUS info sample */ 645 src->hdr.info_len = 4; 646 647 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394; 648 649 src->businfo.irmc = 1; 650 src->businfo.cmc = 1; 651 src->businfo.isc = 1; 652 src->businfo.bmc = 1; 653 src->businfo.pmc = 0; 654 src->businfo.cyc_clk_acc = 100; 655 src->businfo.max_rec = fc->maxrec; 656 src->businfo.max_rom = MAXROM_4; 657 src->businfo.generation = 1; 658 src->businfo.link_spd = fc->speed; 659 660 src->businfo.eui64.hi = fc->eui.hi; 661 src->businfo.eui64.lo = fc->eui.lo; 662 663 STAILQ_INIT(&src->chunk_list); 664 665 fc->crom_src = src; 666 fc->crom_root = &fc->crom_src_buf->root; 667} 668 669static void 670fw_reset_crom(struct firewire_comm *fc) 671{ 672 struct crom_src_buf *buf; 673 struct crom_src *src; 674 struct crom_chunk *root; 675 676 if (fc->crom_src_buf == NULL) 677 fw_init_crom(fc); 678 679 buf = fc->crom_src_buf; 680 src = fc->crom_src; 681 root = fc->crom_root; 682 683 STAILQ_INIT(&src->chunk_list); 684 685 bzero(root, sizeof(struct crom_chunk)); 686 crom_add_chunk(src, NULL, root, 0); 687 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */ 688 /* private company_id */ 689 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); 690#ifdef __DragonFly__ 691 crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project"); 692 crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version); 693#else 694 crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project"); 695 crom_add_entry(root, CSRKEY_HW, __FreeBSD_version); 696#endif 697 crom_add_simple_text(src, root, &buf->hw, hostname); 698} 699 700/* 701 * Called after bus reset. 702 */ 703void 704fw_busreset(struct firewire_comm *fc, uint32_t new_status) 705{ 706 struct firewire_dev_comm *fdc; 707 struct crom_src *src; 708 device_t *devlistp; 709 void *newrom; 710 int i, devcnt; 711 712 switch(fc->status){ 713 case FWBUSMGRELECT: 714 callout_stop(&fc->bmr_callout); 715 break; 716 default: 717 break; 718 } 719 fc->status = new_status; 720 fw_reset_csr(fc); 721 fw_reset_crom(fc); 722 723 if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) { 724 for( i = 0 ; i < devcnt ; i++) 725 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 726 fdc = device_get_softc(devlistp[i]); 727 if (fdc->post_busreset != NULL) 728 fdc->post_busreset(fdc); 729 } 730 free(devlistp, M_TEMP); 731 } 732 733 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); 734 src = &fc->crom_src_buf->src; 735 crom_load(src, (uint32_t *)newrom, CROMSIZE); 736 if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) { 737 /* bump generation and reload */ 738 src->businfo.generation ++; 739 /* generation must be between 0x2 and 0xF */ 740 if (src->businfo.generation < 2) 741 src->businfo.generation ++; 742 crom_load(src, (uint32_t *)newrom, CROMSIZE); 743 bcopy(newrom, (void *)fc->config_rom, CROMSIZE); 744 } 745 free(newrom, M_FW); 746} 747 748/* Call once after reboot */ 749void fw_init(struct firewire_comm *fc) 750{ 751 int i; 752#ifdef FW_VMACCESS 753 struct fw_xfer *xfer; 754 struct fw_bind *fwb; 755#endif 756 757 fc->arq->queued = 0; 758 fc->ars->queued = 0; 759 fc->atq->queued = 0; 760 fc->ats->queued = 0; 761 762 fc->arq->buf = NULL; 763 fc->ars->buf = NULL; 764 fc->atq->buf = NULL; 765 fc->ats->buf = NULL; 766 767 fc->arq->flag = 0; 768 fc->ars->flag = 0; 769 fc->atq->flag = 0; 770 fc->ats->flag = 0; 771 772 STAILQ_INIT(&fc->atq->q); 773 STAILQ_INIT(&fc->ats->q); 774 775 for( i = 0 ; i < fc->nisodma ; i ++ ){ 776 fc->it[i]->queued = 0; 777 fc->ir[i]->queued = 0; 778 779 fc->it[i]->start = NULL; 780 fc->ir[i]->start = NULL; 781 782 fc->it[i]->buf = NULL; 783 fc->ir[i]->buf = NULL; 784 785 fc->it[i]->flag = FWXFERQ_STREAM; 786 fc->ir[i]->flag = FWXFERQ_STREAM; 787 788 STAILQ_INIT(&fc->it[i]->q); 789 STAILQ_INIT(&fc->ir[i]->q); 790 } 791 792 fc->arq->maxq = FWMAXQUEUE; 793 fc->ars->maxq = FWMAXQUEUE; 794 fc->atq->maxq = FWMAXQUEUE; 795 fc->ats->maxq = FWMAXQUEUE; 796 797 for( i = 0 ; i < fc->nisodma ; i++){ 798 fc->ir[i]->maxq = FWMAXQUEUE; 799 fc->it[i]->maxq = FWMAXQUEUE; 800 } 801/* Initialize csr registers */ 802 fc->topology_map = (struct fw_topology_map *)malloc( 803 sizeof(struct fw_topology_map), 804 M_FW, M_NOWAIT | M_ZERO); 805 fc->speed_map = (struct fw_speed_map *)malloc( 806 sizeof(struct fw_speed_map), 807 M_FW, M_NOWAIT | M_ZERO); 808 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16; 809 CSRARC(fc, TOPO_MAP + 4) = 1; 810 CSRARC(fc, SPED_MAP) = 0x3f1 << 16; 811 CSRARC(fc, SPED_MAP + 4) = 1; 812 813 STAILQ_INIT(&fc->devices); 814 815/* Initialize Async handlers */ 816 STAILQ_INIT(&fc->binds); 817 for( i = 0 ; i < 0x40 ; i++){ 818 STAILQ_INIT(&fc->tlabels[i]); 819 } 820 821/* DV depend CSRs see blue book */ 822#if 0 823 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */ 824 CSRARC(fc, oPCR) = 0x8000007a; 825 for(i = 4 ; i < 0x7c/4 ; i+=4){ 826 CSRARC(fc, i + oPCR) = 0x8000007a; 827 } 828 829 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */ 830 CSRARC(fc, iPCR) = 0x803f0000; 831 for(i = 4 ; i < 0x7c/4 ; i+=4){ 832 CSRARC(fc, i + iPCR) = 0x0; 833 } 834#endif 835 836 fc->crom_src_buf = NULL; 837 838#ifdef FW_VMACCESS 839 xfer = fw_xfer_alloc(); 840 if(xfer == NULL) return; 841 842 fwb = (struct fw_bind *)malloc(sizeof (struct fw_bind), M_FW, M_NOWAIT); 843 if(fwb == NULL){ 844 fw_xfer_free(xfer); 845 return; 846 } 847 xfer->hand = fw_vmaccess; 848 xfer->fc = fc; 849 xfer->sc = NULL; 850 851 fwb->start_hi = 0x2; 852 fwb->start_lo = 0; 853 fwb->addrlen = 0xffffffff; 854 fwb->xfer = xfer; 855 fw_bindadd(fc, fwb); 856#endif 857} 858 859#define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\ 860 ((fwb)->end < (addr))?1:0) 861 862/* 863 * To lookup bound process from IEEE1394 address. 864 */ 865struct fw_bind * 866fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo) 867{ 868 u_int64_t addr; 869 struct fw_bind *tfw, *r = NULL; 870 871 addr = ((u_int64_t)dest_hi << 32) | dest_lo; 872 FW_GLOCK(fc); 873 STAILQ_FOREACH(tfw, &fc->binds, fclist) 874 if (BIND_CMP(addr, tfw) == 0) { 875 r = tfw; 876 break; 877 } 878 FW_GUNLOCK(fc); 879 return(r); 880} 881 882/* 883 * To bind IEEE1394 address block to process. 884 */ 885int 886fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb) 887{ 888 struct fw_bind *tfw, *prev = NULL; 889 int r = 0; 890 891 if (fwb->start > fwb->end) { 892 printf("%s: invalid range\n", __func__); 893 return EINVAL; 894 } 895 896 FW_GLOCK(fc); 897 STAILQ_FOREACH(tfw, &fc->binds, fclist) { 898 if (fwb->end < tfw->start) 899 break; 900 prev = tfw; 901 } 902 if (prev == NULL) 903 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist); 904 else if (prev->end < fwb->start) 905 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist); 906 else { 907 printf("%s: bind failed\n", __func__); 908 r = EBUSY; 909 } 910 FW_GUNLOCK(fc); 911 return (r); 912} 913 914/* 915 * To free IEEE1394 address block. 916 */ 917int 918fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb) 919{ 920#if 0 921 struct fw_xfer *xfer, *next; 922#endif 923 struct fw_bind *tfw; 924 int s; 925 926 s = splfw(); 927 FW_GLOCK(fc); 928 STAILQ_FOREACH(tfw, &fc->binds, fclist) 929 if (tfw == fwb) { 930 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist); 931 goto found; 932 } 933 934 printf("%s: no such binding\n", __func__); 935 FW_GUNLOCK(fc); 936 splx(s); 937 return (1); 938found: 939#if 0 940 /* shall we do this? */ 941 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) { 942 next = STAILQ_NEXT(xfer, link); 943 fw_xfer_free(xfer); 944 } 945 STAILQ_INIT(&fwb->xferlist); 946#endif 947 FW_GUNLOCK(fc); 948 949 splx(s); 950 return 0; 951} 952 953int 954fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type, 955 int slen, int rlen, int n, 956 struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *)) 957{ 958 int i, s; 959 struct fw_xfer *xfer; 960 961 for (i = 0; i < n; i++) { 962 xfer = fw_xfer_alloc_buf(type, slen, rlen); 963 if (xfer == NULL) 964 return (n); 965 xfer->fc = fc; 966 xfer->sc = sc; 967 xfer->hand = hand; 968 s = splfw(); 969 STAILQ_INSERT_TAIL(q, xfer, link); 970 splx(s); 971 } 972 return (n); 973} 974 975void 976fw_xferlist_remove(struct fw_xferlist *q) 977{ 978 struct fw_xfer *xfer, *next; 979 980 for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) { 981 next = STAILQ_NEXT(xfer, link); 982 fw_xfer_free_buf(xfer); 983 } 984 STAILQ_INIT(q); 985} 986/* 987 * dump packet header 988 */ 989static void 990fw_dump_hdr(struct fw_pkt *fp, char *prefix) 991{ 992 printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x " 993 "src=0x%03x\n", prefix, 994 fp->mode.hdr.dst & 0x3f, 995 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3, 996 fp->mode.hdr.tcode, fp->mode.hdr.pri, 997 fp->mode.hdr.src); 998} 999 1000/* 1001 * To free transaction label. 1002 */ 1003static void 1004fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer) 1005{ 1006 struct fw_xfer *txfer; 1007 int s; 1008 1009 if (xfer->tl < 0) 1010 return; 1011 1012 s = splfw(); 1013 FW_GLOCK(fc); 1014#if 1 /* make sure the label is allocated */ 1015 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) 1016 if(txfer == xfer) 1017 break; 1018 if (txfer == NULL) { 1019 printf("%s: the xfer is not in the queue " 1020 "(tlabel=%d, flag=0x%x)\n", 1021 __FUNCTION__, xfer->tl, xfer->flag); 1022 fw_dump_hdr(&xfer->send.hdr, "send"); 1023 fw_dump_hdr(&xfer->recv.hdr, "recv"); 1024 kdb_backtrace(); 1025 FW_GUNLOCK(fc); 1026 splx(s); 1027 return; 1028 } 1029#endif 1030 1031 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); 1032 FW_GUNLOCK(fc); 1033 splx(s); 1034 return; 1035} 1036 1037/* 1038 * To obtain XFER structure by transaction label. 1039 */ 1040static struct fw_xfer * 1041fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode) 1042{ 1043 struct fw_xfer *xfer; 1044 int s = splfw(); 1045 int req; 1046 1047 FW_GLOCK(fc); 1048 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) 1049 if(xfer->send.hdr.mode.hdr.dst == node) { 1050 FW_GUNLOCK(fc); 1051 splx(s); 1052 KASSERT(xfer->tl == tlabel, 1053 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel)); 1054 /* extra sanity check */ 1055 req = xfer->send.hdr.mode.hdr.tcode; 1056 if (xfer->fc->tcode[req].valid_res != tcode) { 1057 printf("%s: invalid response tcode " 1058 "(0x%x for 0x%x)\n", __FUNCTION__, 1059 tcode, req); 1060 return(NULL); 1061 } 1062 1063 if (firewire_debug > 2) 1064 printf("fw_tl2xfer: found tl=%d\n", tlabel); 1065 return(xfer); 1066 } 1067 FW_GUNLOCK(fc); 1068 if (firewire_debug > 1) 1069 printf("fw_tl2xfer: not found tl=%d\n", tlabel); 1070 splx(s); 1071 return(NULL); 1072} 1073 1074/* 1075 * To allocate IEEE1394 XFER structure. 1076 */ 1077struct fw_xfer * 1078fw_xfer_alloc(struct malloc_type *type) 1079{ 1080 struct fw_xfer *xfer; 1081 1082 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO); 1083 if (xfer == NULL) 1084 return xfer; 1085 1086 xfer->malloc = type; 1087 1088 return xfer; 1089} 1090 1091struct fw_xfer * 1092fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len) 1093{ 1094 struct fw_xfer *xfer; 1095 1096 xfer = fw_xfer_alloc(type); 1097 if (xfer == NULL) 1098 return(NULL); 1099 xfer->send.pay_len = send_len; 1100 xfer->recv.pay_len = recv_len; 1101 if (send_len > 0) { 1102 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO); 1103 if (xfer->send.payload == NULL) { 1104 fw_xfer_free(xfer); 1105 return(NULL); 1106 } 1107 } 1108 if (recv_len > 0) { 1109 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT); 1110 if (xfer->recv.payload == NULL) { 1111 if (xfer->send.payload != NULL) 1112 free(xfer->send.payload, type); 1113 fw_xfer_free(xfer); 1114 return(NULL); 1115 } 1116 } 1117 return(xfer); 1118} 1119 1120/* 1121 * IEEE1394 XFER post process. 1122 */ 1123void 1124fw_xfer_done(struct fw_xfer *xfer) 1125{ 1126 if (xfer->hand == NULL) { 1127 printf("hand == NULL\n"); 1128 return; 1129 } 1130 1131 if (xfer->fc == NULL) 1132 panic("fw_xfer_done: why xfer->fc is NULL?"); 1133 1134 fw_tl_free(xfer->fc, xfer); 1135 xfer->hand(xfer); 1136} 1137 1138void 1139fw_xfer_unload(struct fw_xfer* xfer) 1140{ 1141 int s; 1142 1143 if(xfer == NULL ) return; 1144 if(xfer->flag & FWXF_INQ){ 1145 printf("fw_xfer_free FWXF_INQ\n"); 1146 s = splfw(); 1147 FW_GLOCK(xfer->fc); 1148 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); 1149#if 0 1150 xfer->q->queued --; 1151#endif 1152 FW_GUNLOCK(xfer->fc); 1153 splx(s); 1154 } 1155 if (xfer->fc != NULL) { 1156#if 1 1157 if(xfer->flag & FWXF_START) 1158 /* 1159 * This could happen if: 1160 * 1. We call fwohci_arcv() before fwohci_txd(). 1161 * 2. firewire_watch() is called. 1162 */ 1163 printf("fw_xfer_free FWXF_START\n"); 1164#endif 1165 } 1166 xfer->flag = FWXF_INIT; 1167 xfer->resp = 0; 1168} 1169/* 1170 * To free IEEE1394 XFER structure. 1171 */ 1172void 1173fw_xfer_free_buf( struct fw_xfer* xfer) 1174{ 1175 if (xfer == NULL) { 1176 printf("%s: xfer == NULL\n", __func__); 1177 return; 1178 } 1179 fw_xfer_unload(xfer); 1180 if(xfer->send.payload != NULL){ 1181 free(xfer->send.payload, xfer->malloc); 1182 } 1183 if(xfer->recv.payload != NULL){ 1184 free(xfer->recv.payload, xfer->malloc); 1185 } 1186 free(xfer, xfer->malloc); 1187} 1188 1189void 1190fw_xfer_free( struct fw_xfer* xfer) 1191{ 1192 if (xfer == NULL) { 1193 printf("%s: xfer == NULL\n", __func__); 1194 return; 1195 } 1196 fw_xfer_unload(xfer); 1197 free(xfer, xfer->malloc); 1198} 1199 1200void 1201fw_asy_callback_free(struct fw_xfer *xfer) 1202{ 1203#if 0 1204 printf("asyreq done flag=0x%02x resp=%d\n", 1205 xfer->flag, xfer->resp); 1206#endif 1207 fw_xfer_free(xfer); 1208} 1209 1210/* 1211 * To configure PHY. 1212 */ 1213static void 1214fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count) 1215{ 1216 struct fw_xfer *xfer; 1217 struct fw_pkt *fp; 1218 1219 fc->status = FWBUSPHYCONF; 1220 1221 xfer = fw_xfer_alloc(M_FWXFER); 1222 if (xfer == NULL) 1223 return; 1224 xfer->fc = fc; 1225 xfer->hand = fw_asy_callback_free; 1226 1227 fp = &xfer->send.hdr; 1228 fp->mode.ld[1] = 0; 1229 if (root_node >= 0) 1230 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23; 1231 if (gap_count >= 0) 1232 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16; 1233 fp->mode.ld[2] = ~fp->mode.ld[1]; 1234/* XXX Dangerous, how to pass PHY packet to device driver */ 1235 fp->mode.common.tcode |= FWTCODE_PHY; 1236 1237 if (firewire_debug) 1238 printf("send phy_config root_node=%d gap_count=%d\n", 1239 root_node, gap_count); 1240 fw_asyreq(fc, -1, xfer); 1241} 1242 1243#if 0 1244/* 1245 * Dump self ID. 1246 */ 1247static void 1248fw_print_sid(uint32_t sid) 1249{ 1250 union fw_self_id *s; 1251 s = (union fw_self_id *) &sid; 1252 printf("node:%d link:%d gap:%d spd:%d del:%d con:%d pwr:%d" 1253 " p0:%d p1:%d p2:%d i:%d m:%d\n", 1254 s->p0.phy_id, s->p0.link_active, s->p0.gap_count, 1255 s->p0.phy_speed, s->p0.phy_delay, s->p0.contender, 1256 s->p0.power_class, s->p0.port0, s->p0.port1, 1257 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets); 1258} 1259#endif 1260 1261/* 1262 * To receive self ID. 1263 */ 1264void fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len) 1265{ 1266 uint32_t *p; 1267 union fw_self_id *self_id; 1268 u_int i, j, node, c_port = 0, i_branch = 0; 1269 1270 fc->sid_cnt = len /(sizeof(uint32_t) * 2); 1271 fc->status = FWBUSINIT; 1272 fc->max_node = fc->nodeid & 0x3f; 1273 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16; 1274 fc->status = FWBUSCYMELECT; 1275 fc->topology_map->crc_len = 2; 1276 fc->topology_map->generation ++; 1277 fc->topology_map->self_id_count = 0; 1278 fc->topology_map->node_count = 0; 1279 fc->speed_map->generation ++; 1280 fc->speed_map->crc_len = 1 + (64*64 + 3) / 4; 1281 self_id = &fc->topology_map->self_id[0]; 1282 for(i = 0; i < fc->sid_cnt; i ++){ 1283 if (sid[1] != ~sid[0]) { 1284 printf("fw_sidrcv: invalid self-id packet\n"); 1285 sid += 2; 1286 continue; 1287 } 1288 *self_id = *((union fw_self_id *)sid); 1289 fc->topology_map->crc_len++; 1290 if(self_id->p0.sequel == 0){ 1291 fc->topology_map->node_count ++; 1292 c_port = 0; 1293#if 0 1294 fw_print_sid(sid[0]); 1295#endif 1296 node = self_id->p0.phy_id; 1297 if(fc->max_node < node){ 1298 fc->max_node = self_id->p0.phy_id; 1299 } 1300 /* XXX I'm not sure this is the right speed_map */ 1301 fc->speed_map->speed[node][node] 1302 = self_id->p0.phy_speed; 1303 for (j = 0; j < node; j ++) { 1304 fc->speed_map->speed[j][node] 1305 = fc->speed_map->speed[node][j] 1306 = min(fc->speed_map->speed[j][j], 1307 self_id->p0.phy_speed); 1308 } 1309 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) && 1310 (self_id->p0.link_active && self_id->p0.contender)) { 1311 fc->irm = self_id->p0.phy_id; 1312 } 1313 if(self_id->p0.port0 >= 0x2){ 1314 c_port++; 1315 } 1316 if(self_id->p0.port1 >= 0x2){ 1317 c_port++; 1318 } 1319 if(self_id->p0.port2 >= 0x2){ 1320 c_port++; 1321 } 1322 } 1323 if(c_port > 2){ 1324 i_branch += (c_port - 2); 1325 } 1326 sid += 2; 1327 self_id++; 1328 fc->topology_map->self_id_count ++; 1329 } 1330 device_printf(fc->bdev, "%d nodes", fc->max_node + 1); 1331 /* CRC */ 1332 fc->topology_map->crc = fw_crc16( 1333 (uint32_t *)&fc->topology_map->generation, 1334 fc->topology_map->crc_len * 4); 1335 fc->speed_map->crc = fw_crc16( 1336 (uint32_t *)&fc->speed_map->generation, 1337 fc->speed_map->crc_len * 4); 1338 /* byteswap and copy to CSR */ 1339 p = (uint32_t *)fc->topology_map; 1340 for (i = 0; i <= fc->topology_map->crc_len; i++) 1341 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++); 1342 p = (uint32_t *)fc->speed_map; 1343 CSRARC(fc, SPED_MAP) = htonl(*p++); 1344 CSRARC(fc, SPED_MAP + 4) = htonl(*p++); 1345 /* don't byte-swap uint8_t array */ 1346 bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4); 1347 1348 fc->max_hop = fc->max_node - i_branch; 1349 printf(", maxhop <= %d", fc->max_hop); 1350 1351 if(fc->irm == -1 ){ 1352 printf(", Not found IRM capable node"); 1353 }else{ 1354 printf(", cable IRM = %d", fc->irm); 1355 if (fc->irm == fc->nodeid) 1356 printf(" (me)"); 1357 } 1358 printf("\n"); 1359 1360 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) { 1361 if (fc->irm == fc->nodeid) { 1362 fc->status = FWBUSMGRDONE; 1363 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm); 1364 fw_bmr(fc); 1365 } else { 1366 fc->status = FWBUSMGRELECT; 1367 callout_reset(&fc->bmr_callout, hz/8, 1368 (void *)fw_try_bmr, (void *)fc); 1369 } 1370 } else 1371 fc->status = FWBUSMGRDONE; 1372 1373 callout_reset(&fc->busprobe_callout, hz/4, 1374 (void *)fw_bus_probe, (void *)fc); 1375} 1376 1377/* 1378 * To probe devices on the IEEE1394 bus. 1379 */ 1380static void 1381fw_bus_probe(struct firewire_comm *fc) 1382{ 1383 int s; 1384 struct fw_device *fwdev; 1385 1386 s = splfw(); 1387 fc->status = FWBUSEXPLORE; 1388 1389 /* Invalidate all devices, just after bus reset. */ 1390 STAILQ_FOREACH(fwdev, &fc->devices, link) 1391 if (fwdev->status != FWDEVINVAL) { 1392 fwdev->status = FWDEVINVAL; 1393 fwdev->rcnt = 0; 1394 } 1395 splx(s); 1396 1397 wakeup((void *)fc); 1398} 1399 1400static int 1401fw_explore_read_quads(struct fw_device *fwdev, int offset, 1402 uint32_t *quad, int n) 1403{ 1404 struct fw_xfer *xfer; 1405 uint32_t tmp; 1406 int i, error; 1407 1408 for (i = 0; i < n; i ++, offset += sizeof(uint32_t)) { 1409 xfer = fwmem_read_quad(fwdev, NULL, -1, 1410 0xffff, 0xf0000000 | offset, (void *)&tmp, 1411 fw_xferwake); 1412 if (xfer == NULL) 1413 return (-1); 1414 fw_xferwait(xfer); 1415 1416 if (xfer->resp == 0) 1417 quad[i] = ntohl(tmp); 1418 1419 error = xfer->resp; 1420 fw_xfer_free(xfer); 1421 if (error) 1422 return (error); 1423 } 1424 return (0); 1425} 1426 1427 1428static int 1429fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur) 1430{ 1431 int err, i, off; 1432 struct csrdirectory *dir; 1433 struct csrreg *reg; 1434 1435 dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)]; 1436 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1437 (uint32_t *)dir, 1); 1438 if (err) 1439 return (-1); 1440 1441 offset += sizeof(uint32_t); 1442 reg = (struct csrreg *)&fwdev->csrrom[offset/sizeof(uint32_t)]; 1443 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1444 (uint32_t *)reg, dir->crc_len); 1445 if (err) 1446 return (-1); 1447 1448 /* XXX check CRC */ 1449 1450 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1); 1451 if (fwdev->rommax < off) 1452 fwdev->rommax = off; 1453 1454 if (recur == 0) 1455 return (0); 1456 1457 for (i = 0; i < dir->crc_len; i ++, offset += sizeof(uint32_t)) { 1458 if (reg[i].key == CROM_UDIR) 1459 recur = 1; 1460 else if (reg[i].key == CROM_TEXTLEAF) 1461 recur = 0; 1462 else 1463 continue; 1464 1465 off = offset + reg[i].val * sizeof(uint32_t); 1466 if (off > CROMSIZE) { 1467 printf("%s: invalid offset %d\n", __FUNCTION__, off); 1468 return(-1); 1469 } 1470 err = fw_explore_csrblock(fwdev, off, recur); 1471 if (err) 1472 return (-1); 1473 } 1474 return (0); 1475} 1476 1477static int 1478fw_explore_node(struct fw_device *dfwdev) 1479{ 1480 struct firewire_comm *fc; 1481 struct fw_device *fwdev, *pfwdev, *tfwdev; 1482 uint32_t *csr; 1483 struct csrhdr *hdr; 1484 struct bus_info *binfo; 1485 int err, node, spd; 1486 1487 fc = dfwdev->fc; 1488 csr = dfwdev->csrrom; 1489 node = dfwdev->dst; 1490 1491 /* First quad */ 1492 err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1); 1493 if (err) 1494 return (-1); 1495 hdr = (struct csrhdr *)&csr[0]; 1496 if (hdr->info_len != 4) { 1497 if (firewire_debug) 1498 printf("node%d: wrong bus info len(%d)\n", 1499 node, hdr->info_len); 1500 return (-1); 1501 } 1502 1503 /* bus info */ 1504 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); 1505 if (err) 1506 return (-1); 1507 binfo = (struct bus_info *)&csr[1]; 1508 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { 1509 if (firewire_debug) 1510 printf("node%d: invalid bus name 0x%08x\n", 1511 node, binfo->bus_name); 1512 return (-1); 1513 } 1514 spd = fc->speed_map->speed[fc->nodeid][node]; 1515 STAILQ_FOREACH(fwdev, &fc->devices, link) 1516 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) 1517 break; 1518 if (fwdev == NULL) { 1519 /* new device */ 1520 fwdev = malloc(sizeof(struct fw_device), M_FW, 1521 M_NOWAIT | M_ZERO); 1522 if (fwdev == NULL) { 1523 if (firewire_debug) 1524 printf("node%d: no memory\n", node); 1525 return (-1); 1526 } 1527 fwdev->fc = fc; 1528 fwdev->eui = binfo->eui64; 1529 /* inesrt into sorted fwdev list */ 1530 pfwdev = NULL; 1531 STAILQ_FOREACH(tfwdev, &fc->devices, link) { 1532 if (tfwdev->eui.hi > fwdev->eui.hi || 1533 (tfwdev->eui.hi == fwdev->eui.hi && 1534 tfwdev->eui.lo > fwdev->eui.lo)) 1535 break; 1536 pfwdev = tfwdev; 1537 } 1538 if (pfwdev == NULL) 1539 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link); 1540 else 1541 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link); 1542 1543 device_printf(fc->bdev, "New %s device ID:%08x%08x\n", 1544 linkspeed[spd], 1545 fwdev->eui.hi, fwdev->eui.lo); 1546 } 1547 fwdev->dst = node; 1548 fwdev->status = FWDEVINIT; 1549 fwdev->speed = spd; 1550 1551 /* unchanged ? */ 1552 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) { 1553 if (firewire_debug) 1554 printf("node%d: crom unchanged\n", node); 1555 return (0); 1556 } 1557 1558 bzero(&fwdev->csrrom[0], CROMSIZE); 1559 1560 /* copy first quad and bus info block */ 1561 bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5); 1562 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; 1563 1564 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ 1565 1566 if (err) { 1567 fwdev->status = FWDEVINVAL; 1568 fwdev->csrrom[0] = 0; 1569 } 1570 return (err); 1571 1572} 1573 1574/* 1575 * Find the self_id packet for a node, ignoring sequels. 1576 */ 1577static union fw_self_id * 1578fw_find_self_id(struct firewire_comm *fc, int node) 1579{ 1580 uint32_t i; 1581 union fw_self_id *s; 1582 1583 for (i = 0; i < fc->topology_map->self_id_count; i++) { 1584 s = &fc->topology_map->self_id[i]; 1585 if (s->p0.sequel) 1586 continue; 1587 if (s->p0.phy_id == node) 1588 return s; 1589 } 1590 return 0; 1591} 1592 1593static void 1594fw_explore(struct firewire_comm *fc) 1595{ 1596 int node, err, s, i, todo, todo2, trys; 1597 char nodes[63]; 1598 struct fw_device dfwdev; 1599 union fw_self_id *fwsid; 1600 1601 todo = 0; 1602 /* setup dummy fwdev */ 1603 dfwdev.fc = fc; 1604 dfwdev.speed = 0; 1605 dfwdev.maxrec = 8; /* 512 */ 1606 dfwdev.status = FWDEVINIT; 1607 1608 for (node = 0; node <= fc->max_node; node ++) { 1609 /* We don't probe myself and linkdown nodes */ 1610 if (node == fc->nodeid) 1611 continue; 1612 fwsid = fw_find_self_id(fc, node); 1613 if (!fwsid || !fwsid->p0.link_active) { 1614 if (firewire_debug) 1615 printf("node%d: link down\n", node); 1616 continue; 1617 } 1618 nodes[todo++] = node; 1619 } 1620 1621 s = splfw(); 1622 for (trys = 0; todo > 0 && trys < 3; trys ++) { 1623 todo2 = 0; 1624 for (i = 0; i < todo; i ++) { 1625 dfwdev.dst = nodes[i]; 1626 err = fw_explore_node(&dfwdev); 1627 if (err) 1628 nodes[todo2++] = nodes[i]; 1629 if (firewire_debug) 1630 printf("%s: node %d, err = %d\n", 1631 __FUNCTION__, node, err); 1632 } 1633 todo = todo2; 1634 } 1635 splx(s); 1636} 1637 1638 1639static void 1640fw_bus_probe_thread(void *arg) 1641{ 1642 struct firewire_comm *fc; 1643 1644 fc = (struct firewire_comm *)arg; 1645 1646 mtx_lock(&fc->wait_lock); 1647 while (fc->status != FWBUSDETACH) { 1648 if (fc->status == FWBUSEXPLORE) { 1649 mtx_unlock(&fc->wait_lock); 1650 fw_explore(fc); 1651 fc->status = FWBUSEXPDONE; 1652 if (firewire_debug) 1653 printf("bus_explore done\n"); 1654 fw_attach_dev(fc); 1655 mtx_lock(&fc->wait_lock); 1656 } 1657 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0); 1658 } 1659 mtx_unlock(&fc->wait_lock); 1660 kthread_exit(0); 1661} 1662 1663/* 1664 * To attach sub-devices layer onto IEEE1394 bus. 1665 */ 1666static void 1667fw_attach_dev(struct firewire_comm *fc) 1668{ 1669 struct fw_device *fwdev, *next; 1670 int i, err; 1671 device_t *devlistp; 1672 int devcnt; 1673 struct firewire_dev_comm *fdc; 1674 1675 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { 1676 next = STAILQ_NEXT(fwdev, link); 1677 if (fwdev->status == FWDEVINIT) { 1678 fwdev->status = FWDEVATTACHED; 1679 } else if (fwdev->status == FWDEVINVAL) { 1680 fwdev->rcnt ++; 1681 if (fwdev->rcnt > hold_count) { 1682 /* 1683 * Remove devices which have not been seen 1684 * for a while. 1685 */ 1686 STAILQ_REMOVE(&fc->devices, fwdev, fw_device, 1687 link); 1688 free(fwdev, M_FW); 1689 } 1690 } 1691 } 1692 1693 err = device_get_children(fc->bdev, &devlistp, &devcnt); 1694 if( err != 0 ) 1695 return; 1696 for( i = 0 ; i < devcnt ; i++){ 1697 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 1698 fdc = device_get_softc(devlistp[i]); 1699 if (fdc->post_explore != NULL) 1700 fdc->post_explore(fdc); 1701 } 1702 } 1703 free(devlistp, M_TEMP); 1704 1705 return; 1706} 1707 1708/* 1709 * To allocate unique transaction label. 1710 */ 1711static int 1712fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer) 1713{ 1714 u_int i; 1715 struct fw_xfer *txfer; 1716 int s; 1717 static uint32_t label = 0; 1718 1719 s = splfw(); 1720 FW_GLOCK(fc); 1721 for( i = 0 ; i < 0x40 ; i ++){ 1722 label = (label + 1) & 0x3f; 1723 STAILQ_FOREACH(txfer, &fc->tlabels[label], tlabel) 1724 if (txfer->send.hdr.mode.hdr.dst == 1725 xfer->send.hdr.mode.hdr.dst) 1726 break; 1727 if(txfer == NULL) { 1728 xfer->tl = label; 1729 xfer->send.hdr.mode.hdr.tlrt = label << 2; 1730 STAILQ_INSERT_TAIL(&fc->tlabels[label], xfer, tlabel); 1731 FW_GUNLOCK(fc); 1732 splx(s); 1733 if (firewire_debug > 1) 1734 printf("fw_get_tlabel: dst=%d tl=%d\n", 1735 xfer->send.hdr.mode.hdr.dst, label); 1736 /* note: label may be incremanted after unlock */ 1737 return(xfer->tl); 1738 } 1739 } 1740 FW_GUNLOCK(fc); 1741 splx(s); 1742 1743 if (firewire_debug > 1) 1744 printf("fw_get_tlabel: no free tlabel\n"); 1745 return(-1); 1746} 1747 1748static void 1749fw_rcv_copy(struct fw_rcv_buf *rb) 1750{ 1751 struct fw_pkt *pkt; 1752 u_char *p; 1753 struct tcode_info *tinfo; 1754 u_int res, i, len, plen; 1755 1756 rb->xfer->recv.spd = rb->spd; 1757 1758 pkt = (struct fw_pkt *)rb->vec->iov_base; 1759 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode]; 1760 1761 /* Copy header */ 1762 p = (u_char *)&rb->xfer->recv.hdr; 1763 bcopy(rb->vec->iov_base, p, tinfo->hdr_len); 1764 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len; 1765 rb->vec->iov_len -= tinfo->hdr_len; 1766 1767 /* Copy payload */ 1768 p = (u_char *)rb->xfer->recv.payload; 1769 res = rb->xfer->recv.pay_len; 1770 1771 /* special handling for RRESQ */ 1772 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ && 1773 p != NULL && res >= sizeof(uint32_t)) { 1774 *(uint32_t *)p = pkt->mode.rresq.data; 1775 rb->xfer->recv.pay_len = sizeof(uint32_t); 1776 return; 1777 } 1778 1779 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0) 1780 return; 1781 1782 plen = pkt->mode.rresb.len; 1783 1784 for (i = 0; i < rb->nvec; i++, rb->vec++) { 1785 len = MIN(rb->vec->iov_len, plen); 1786 if (res < len) { 1787 printf("rcv buffer(%d) is %d bytes short.\n", 1788 rb->xfer->recv.pay_len, len - res); 1789 len = res; 1790 } 1791 bcopy(rb->vec->iov_base, p, len); 1792 p += len; 1793 res -= len; 1794 plen -= len; 1795 if (res == 0 || plen == 0) 1796 break; 1797 } 1798 rb->xfer->recv.pay_len -= res; 1799 1800} 1801 1802/* 1803 * Generic packet receiving process. 1804 */ 1805void 1806fw_rcv(struct fw_rcv_buf *rb) 1807{ 1808 struct fw_pkt *fp, *resfp; 1809 struct fw_bind *bind; 1810 int tcode; 1811 int i, len, oldstate; 1812#if 0 1813 { 1814 uint32_t *qld; 1815 int i; 1816 qld = (uint32_t *)buf; 1817 printf("spd %d len:%d\n", spd, len); 1818 for( i = 0 ; i <= len && i < 32; i+= 4){ 1819 printf("0x%08x ", ntohl(qld[i/4])); 1820 if((i % 16) == 15) printf("\n"); 1821 } 1822 if((i % 16) != 15) printf("\n"); 1823 } 1824#endif 1825 fp = (struct fw_pkt *)rb->vec[0].iov_base; 1826 tcode = fp->mode.common.tcode; 1827 switch (tcode) { 1828 case FWTCODE_WRES: 1829 case FWTCODE_RRESQ: 1830 case FWTCODE_RRESB: 1831 case FWTCODE_LRES: 1832 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1833 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode); 1834 if(rb->xfer == NULL) { 1835 printf("fw_rcv: unknown response " 1836 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n", 1837 tcode_str[tcode], tcode, 1838 fp->mode.hdr.src, 1839 fp->mode.hdr.tlrt >> 2, 1840 fp->mode.hdr.tlrt & 3, 1841 fp->mode.rresq.data); 1842#if 0 1843 printf("try ad-hoc work around!!\n"); 1844 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1845 (fp->mode.hdr.tlrt >> 2)^3); 1846 if (rb->xfer == NULL) { 1847 printf("no use...\n"); 1848 return; 1849 } 1850#else 1851 return; 1852#endif 1853 } 1854 fw_rcv_copy(rb); 1855 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP) 1856 rb->xfer->resp = EIO; 1857 else 1858 rb->xfer->resp = 0; 1859 /* make sure the packet is drained in AT queue */ 1860 oldstate = rb->xfer->flag; 1861 rb->xfer->flag = FWXF_RCVD; 1862 switch (oldstate) { 1863 case FWXF_SENT: 1864 fw_xfer_done(rb->xfer); 1865 break; 1866 case FWXF_START: 1867#if 0 1868 if (firewire_debug) 1869 printf("not sent yet tl=%x\n", rb->xfer->tl); 1870#endif 1871 break; 1872 default: 1873 printf("unexpected flag 0x%02x\n", rb->xfer->flag); 1874 } 1875 return; 1876 case FWTCODE_WREQQ: 1877 case FWTCODE_WREQB: 1878 case FWTCODE_RREQQ: 1879 case FWTCODE_RREQB: 1880 case FWTCODE_LREQ: 1881 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi, 1882 fp->mode.rreqq.dest_lo); 1883 if(bind == NULL){ 1884 printf("Unknown service addr 0x%04x:0x%08x %s(%x)" 1885#if defined(__DragonFly__) || __FreeBSD_version < 500000 1886 " src=0x%x data=%lx\n", 1887#else 1888 " src=0x%x data=%x\n", 1889#endif 1890 fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo, 1891 tcode_str[tcode], tcode, 1892 fp->mode.hdr.src, ntohl(fp->mode.wreqq.data)); 1893 if (rb->fc->status == FWBUSRESET) { 1894 printf("fw_rcv: cannot respond(bus reset)!\n"); 1895 return; 1896 } 1897 rb->xfer = fw_xfer_alloc(M_FWXFER); 1898 if(rb->xfer == NULL){ 1899 return; 1900 } 1901 rb->xfer->send.spd = rb->spd; 1902 rb->xfer->send.pay_len = 0; 1903 resfp = &rb->xfer->send.hdr; 1904 switch (tcode) { 1905 case FWTCODE_WREQQ: 1906 case FWTCODE_WREQB: 1907 resfp->mode.hdr.tcode = FWTCODE_WRES; 1908 break; 1909 case FWTCODE_RREQQ: 1910 resfp->mode.hdr.tcode = FWTCODE_RRESQ; 1911 break; 1912 case FWTCODE_RREQB: 1913 resfp->mode.hdr.tcode = FWTCODE_RRESB; 1914 break; 1915 case FWTCODE_LREQ: 1916 resfp->mode.hdr.tcode = FWTCODE_LRES; 1917 break; 1918 } 1919 resfp->mode.hdr.dst = fp->mode.hdr.src; 1920 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt; 1921 resfp->mode.hdr.pri = fp->mode.hdr.pri; 1922 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR; 1923 resfp->mode.rresb.extcode = 0; 1924 resfp->mode.rresb.len = 0; 1925/* 1926 rb->xfer->hand = fw_xferwake; 1927*/ 1928 rb->xfer->hand = fw_xfer_free; 1929 if(fw_asyreq(rb->fc, -1, rb->xfer)){ 1930 fw_xfer_free(rb->xfer); 1931 return; 1932 } 1933 return; 1934 } 1935 len = 0; 1936 for (i = 0; i < rb->nvec; i ++) 1937 len += rb->vec[i].iov_len; 1938 rb->xfer = STAILQ_FIRST(&bind->xferlist); 1939 if (rb->xfer == NULL) { 1940#if 1 1941 printf("Discard a packet for this bind.\n"); 1942#endif 1943 return; 1944 } 1945 STAILQ_REMOVE_HEAD(&bind->xferlist, link); 1946 fw_rcv_copy(rb); 1947 rb->xfer->hand(rb->xfer); 1948 return; 1949#if 0 /* shouldn't happen ?? or for GASP */ 1950 case FWTCODE_STREAM: 1951 { 1952 struct fw_xferq *xferq; 1953 1954 xferq = rb->fc->ir[sub]; 1955#if 0 1956 printf("stream rcv dma %d len %d off %d spd %d\n", 1957 sub, len, off, spd); 1958#endif 1959 if(xferq->queued >= xferq->maxq) { 1960 printf("receive queue is full\n"); 1961 return; 1962 } 1963 /* XXX get xfer from xfer queue, we don't need copy for 1964 per packet mode */ 1965 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */ 1966 vec[0].iov_len); 1967 if (rb->xfer == NULL) 1968 return; 1969 fw_rcv_copy(rb) 1970 s = splfw(); 1971 xferq->queued++; 1972 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link); 1973 splx(s); 1974 sc = device_get_softc(rb->fc->bdev); 1975#if defined(__DragonFly__) || __FreeBSD_version < 500000 1976 if (&xferq->rsel.si_pid != 0) 1977#else 1978 if (SEL_WAITING(&xferq->rsel)) 1979#endif 1980 selwakeuppri(&xferq->rsel, FWPRI); 1981 if (xferq->flag & FWXFERQ_WAKEUP) { 1982 xferq->flag &= ~FWXFERQ_WAKEUP; 1983 wakeup((caddr_t)xferq); 1984 } 1985 if (xferq->flag & FWXFERQ_HANDLER) { 1986 xferq->hand(xferq); 1987 } 1988 return; 1989 break; 1990 } 1991#endif 1992 default: 1993 printf("fw_rcv: unknow tcode %d\n", tcode); 1994 break; 1995 } 1996} 1997 1998/* 1999 * Post process for Bus Manager election process. 2000 */ 2001static void 2002fw_try_bmr_callback(struct fw_xfer *xfer) 2003{ 2004 struct firewire_comm *fc; 2005 int bmr; 2006 2007 if (xfer == NULL) 2008 return; 2009 fc = xfer->fc; 2010 if (xfer->resp != 0) 2011 goto error; 2012 if (xfer->recv.payload == NULL) 2013 goto error; 2014 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE) 2015 goto error; 2016 2017 bmr = ntohl(xfer->recv.payload[0]); 2018 if (bmr == 0x3f) 2019 bmr = fc->nodeid; 2020 2021 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f); 2022 fw_xfer_free_buf(xfer); 2023 fw_bmr(fc); 2024 return; 2025 2026error: 2027 device_printf(fc->bdev, "bus manager election failed\n"); 2028 fw_xfer_free_buf(xfer); 2029} 2030 2031 2032/* 2033 * To candidate Bus Manager election process. 2034 */ 2035static void 2036fw_try_bmr(void *arg) 2037{ 2038 struct fw_xfer *xfer; 2039 struct firewire_comm *fc = (struct firewire_comm *)arg; 2040 struct fw_pkt *fp; 2041 int err = 0; 2042 2043 xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4); 2044 if(xfer == NULL){ 2045 return; 2046 } 2047 xfer->send.spd = 0; 2048 fc->status = FWBUSMGRELECT; 2049 2050 fp = &xfer->send.hdr; 2051 fp->mode.lreq.dest_hi = 0xffff; 2052 fp->mode.lreq.tlrt = 0; 2053 fp->mode.lreq.tcode = FWTCODE_LREQ; 2054 fp->mode.lreq.pri = 0; 2055 fp->mode.lreq.src = 0; 2056 fp->mode.lreq.len = 8; 2057 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP; 2058 fp->mode.lreq.dst = FWLOCALBUS | fc->irm; 2059 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID; 2060 xfer->send.payload[0] = htonl(0x3f); 2061 xfer->send.payload[1] = htonl(fc->nodeid); 2062 xfer->hand = fw_try_bmr_callback; 2063 2064 err = fw_asyreq(fc, -1, xfer); 2065 if(err){ 2066 fw_xfer_free_buf(xfer); 2067 return; 2068 } 2069 return; 2070} 2071 2072#ifdef FW_VMACCESS 2073/* 2074 * Software implementation for physical memory block access. 2075 * XXX:Too slow, usef for debug purpose only. 2076 */ 2077static void 2078fw_vmaccess(struct fw_xfer *xfer){ 2079 struct fw_pkt *rfp, *sfp = NULL; 2080 uint32_t *ld = (uint32_t *)xfer->recv.buf; 2081 2082 printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n", 2083 xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3])); 2084 printf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7])); 2085 if(xfer->resp != 0){ 2086 fw_xfer_free( xfer); 2087 return; 2088 } 2089 if(xfer->recv.buf == NULL){ 2090 fw_xfer_free( xfer); 2091 return; 2092 } 2093 rfp = (struct fw_pkt *)xfer->recv.buf; 2094 switch(rfp->mode.hdr.tcode){ 2095 /* XXX need fix for 64bit arch */ 2096 case FWTCODE_WREQB: 2097 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2098 xfer->send.len = 12; 2099 sfp = (struct fw_pkt *)xfer->send.buf; 2100 bcopy(rfp->mode.wreqb.payload, 2101 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len)); 2102 sfp->mode.wres.tcode = FWTCODE_WRES; 2103 sfp->mode.wres.rtcode = 0; 2104 break; 2105 case FWTCODE_WREQQ: 2106 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2107 xfer->send.len = 12; 2108 sfp->mode.wres.tcode = FWTCODE_WRES; 2109 *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data; 2110 sfp->mode.wres.rtcode = 0; 2111 break; 2112 case FWTCODE_RREQB: 2113 xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT); 2114 xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len); 2115 sfp = (struct fw_pkt *)xfer->send.buf; 2116 bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo), 2117 sfp->mode.rresb.payload, (uint16_t)ntohs(rfp->mode.rreqb.len)); 2118 sfp->mode.rresb.tcode = FWTCODE_RRESB; 2119 sfp->mode.rresb.len = rfp->mode.rreqb.len; 2120 sfp->mode.rresb.rtcode = 0; 2121 sfp->mode.rresb.extcode = 0; 2122 break; 2123 case FWTCODE_RREQQ: 2124 xfer->send.buf = malloc(16, M_FW, M_NOWAIT); 2125 xfer->send.len = 16; 2126 sfp = (struct fw_pkt *)xfer->send.buf; 2127 sfp->mode.rresq.data = *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo)); 2128 sfp->mode.wres.tcode = FWTCODE_RRESQ; 2129 sfp->mode.rresb.rtcode = 0; 2130 break; 2131 default: 2132 fw_xfer_free( xfer); 2133 return; 2134 } 2135 sfp->mode.hdr.dst = rfp->mode.hdr.src; 2136 xfer->dst = ntohs(rfp->mode.hdr.src); 2137 xfer->hand = fw_xfer_free; 2138 2139 sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt; 2140 sfp->mode.hdr.pri = 0; 2141 2142 fw_asyreq(xfer->fc, -1, xfer); 2143/**/ 2144 return; 2145} 2146#endif 2147 2148/* 2149 * CRC16 check-sum for IEEE1394 register blocks. 2150 */ 2151uint16_t 2152fw_crc16(uint32_t *ptr, uint32_t len){ 2153 uint32_t i, sum, crc = 0; 2154 int shift; 2155 len = (len + 3) & ~3; 2156 for(i = 0 ; i < len ; i+= 4){ 2157 for( shift = 28 ; shift >= 0 ; shift -= 4){ 2158 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf; 2159 crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum; 2160 } 2161 crc &= 0xffff; 2162 } 2163 return((uint16_t) crc); 2164} 2165 2166static int 2167fw_bmr(struct firewire_comm *fc) 2168{ 2169 struct fw_device fwdev; 2170 union fw_self_id *self_id; 2171 int cmstr; 2172 uint32_t quad; 2173 2174 /* Check to see if the current root node is cycle master capable */ 2175 self_id = fw_find_self_id(fc, fc->max_node); 2176 if (fc->max_node > 0) { 2177 /* XXX check cmc bit of businfo block rather than contender */ 2178 if (self_id->p0.link_active && self_id->p0.contender) 2179 cmstr = fc->max_node; 2180 else { 2181 device_printf(fc->bdev, 2182 "root node is not cycle master capable\n"); 2183 /* XXX shall we be the cycle master? */ 2184 cmstr = fc->nodeid; 2185 /* XXX need bus reset */ 2186 } 2187 } else 2188 cmstr = -1; 2189 2190 device_printf(fc->bdev, "bus manager %d ", CSRARC(fc, BUS_MGR_ID)); 2191 if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) { 2192 /* We are not the bus manager */ 2193 printf("\n"); 2194 return(0); 2195 } 2196 printf("(me)\n"); 2197 2198 /* Optimize gapcount */ 2199 if(fc->max_hop <= MAX_GAPHOP ) 2200 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]); 2201 /* If we are the cycle master, nothing to do */ 2202 if (cmstr == fc->nodeid || cmstr == -1) 2203 return 0; 2204 /* Bus probe has not finished, make dummy fwdev for cmstr */ 2205 bzero(&fwdev, sizeof(fwdev)); 2206 fwdev.fc = fc; 2207 fwdev.dst = cmstr; 2208 fwdev.speed = 0; 2209 fwdev.maxrec = 8; /* 512 */ 2210 fwdev.status = FWDEVINIT; 2211 /* Set cmstr bit on the cycle master */ 2212 quad = htonl(1 << 8); 2213 fwmem_write_quad(&fwdev, NULL, 0/*spd*/, 2214 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free); 2215 2216 return 0; 2217} 2218 2219int 2220fw_open_isodma(struct firewire_comm *fc, int tx) 2221{ 2222 struct fw_xferq **xferqa; 2223 struct fw_xferq *xferq; 2224 int i; 2225 2226 if (tx) 2227 xferqa = &fc->it[0]; 2228 else 2229 xferqa = &fc->ir[0]; 2230 2231 FW_GLOCK(fc); 2232 for (i = 0; i < fc->nisodma; i ++) { 2233 xferq = xferqa[i]; 2234 if ((xferq->flag & FWXFERQ_OPEN) == 0) { 2235 xferq->flag |= FWXFERQ_OPEN; 2236 break; 2237 } 2238 } 2239 if (i == fc->nisodma) { 2240 printf("no free dma channel (tx=%d)\n", tx); 2241 i = -1; 2242 } 2243 FW_GUNLOCK(fc); 2244 return (i); 2245} 2246 2247static int 2248fw_modevent(module_t mode, int type, void *data) 2249{ 2250 int err = 0; 2251#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 2252 static eventhandler_tag fwdev_ehtag = NULL; 2253#endif 2254 2255 switch (type) { 2256 case MOD_LOAD: 2257#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 2258 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone, 2259 fwdev_clone, 0, 1000); 2260#endif 2261 break; 2262 case MOD_UNLOAD: 2263#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 2264 if (fwdev_ehtag != NULL) 2265 EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag); 2266#endif 2267 break; 2268 case MOD_SHUTDOWN: 2269 break; 2270 default: 2271 return (EOPNOTSUPP); 2272 } 2273 return (err); 2274} 2275 2276 2277#ifdef __DragonFly__ 2278DECLARE_DUMMY_MODULE(firewire); 2279#endif 2280DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0); 2281MODULE_VERSION(firewire, 1); 2282