firewire.c revision 277510
1/*- 2 * Copyright (c) 2003 Hidetoshi Shimokawa 3 * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the acknowledgement as bellow: 16 * 17 * This product includes software developed by K. Kobayashi and H. Shimokawa 18 * 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 30 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD: head/sys/dev/firewire/firewire.c 277510 2015-01-21 20:06:25Z will $"); 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/types.h> 41 42#include <sys/jail.h> 43#include <sys/kernel.h> 44#include <sys/module.h> 45#include <sys/malloc.h> 46#include <sys/conf.h> 47#include <sys/sysctl.h> 48#include <sys/kthread.h> 49 50#include <sys/kdb.h> 51#include <sys/bus.h> /* used by smbus and newbus */ 52#include <machine/bus.h> 53 54#include <dev/firewire/firewire.h> 55#include <dev/firewire/firewirereg.h> 56#include <dev/firewire/fwmem.h> 57#include <dev/firewire/iec13213.h> 58#include <dev/firewire/iec68113.h> 59 60struct crom_src_buf { 61 struct crom_src src; 62 struct crom_chunk root; 63 struct crom_chunk vendor; 64 struct crom_chunk hw; 65}; 66 67int firewire_debug = 0, try_bmr = 1, hold_count = 0; 68SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0, 69 "FireWire driver debug flag"); 70SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem"); 71SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0, 72 "Try to be a bus manager"); 73SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0, 74 "Number of count of bus resets for removing lost device information"); 75 76MALLOC_DEFINE(M_FW, "firewire", "FireWire"); 77MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire"); 78 79#define FW_MAXASYRTY 4 80 81devclass_t firewire_devclass; 82 83static void firewire_identify(driver_t *, device_t); 84static int firewire_probe(device_t); 85static int firewire_attach(device_t); 86static int firewire_detach(device_t); 87static int firewire_resume(device_t); 88static void firewire_xfer_timeout(void *, int); 89static device_t firewire_add_child(device_t, u_int, const char *, int); 90static void fw_try_bmr(void *); 91static void fw_try_bmr_callback(struct fw_xfer *); 92static void fw_asystart(struct fw_xfer *); 93static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *); 94static void fw_bus_probe(void *); 95static void fw_attach_dev(struct firewire_comm *); 96static void fw_bus_probe_thread(void *); 97#ifdef FW_VMACCESS 98static void fw_vmaccess (struct fw_xfer *); 99#endif 100static int fw_bmr (struct firewire_comm *); 101static void fw_dump_hdr(struct fw_pkt *, char *); 102 103static device_method_t firewire_methods[] = { 104 /* Device interface */ 105 DEVMETHOD(device_identify, firewire_identify), 106 DEVMETHOD(device_probe, firewire_probe), 107 DEVMETHOD(device_attach, firewire_attach), 108 DEVMETHOD(device_detach, firewire_detach), 109 DEVMETHOD(device_suspend, bus_generic_suspend), 110 DEVMETHOD(device_resume, firewire_resume), 111 DEVMETHOD(device_shutdown, bus_generic_shutdown), 112 113 /* Bus interface */ 114 DEVMETHOD(bus_add_child, firewire_add_child), 115 116 DEVMETHOD_END 117}; 118 119char *linkspeed[] = { 120 "S100", "S200", "S400", "S800", 121 "S1600", "S3200", "undef", "undef" 122}; 123 124static char *tcode_str[] = { 125 "WREQQ", "WREQB", "WRES", "undef", 126 "RREQQ", "RREQB", "RRESQ", "RRESB", 127 "CYCS", "LREQ", "STREAM", "LRES", 128 "undef", "undef", "PHY", "undef" 129}; 130 131/* IEEE-1394a Table C-2 Gap count as a function of hops*/ 132#define MAX_GAPHOP 15 133u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18, 134 21, 24, 26, 29, 32, 35, 37, 40}; 135 136static driver_t firewire_driver = { 137 "firewire", 138 firewire_methods, 139 sizeof(struct firewire_softc), 140}; 141 142/* 143 * Lookup fwdev by node id. 144 */ 145struct fw_device * 146fw_noderesolve_nodeid(struct firewire_comm *fc, int dst) 147{ 148 struct fw_device *fwdev; 149 150 FW_GLOCK(fc); 151 STAILQ_FOREACH(fwdev, &fc->devices, link) 152 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL) 153 break; 154 FW_GUNLOCK(fc); 155 156 return fwdev; 157} 158 159/* 160 * Lookup fwdev by EUI64. 161 */ 162struct fw_device * 163fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui) 164{ 165 struct fw_device *fwdev; 166 167 FW_GLOCK(fc); 168 STAILQ_FOREACH(fwdev, &fc->devices, link) 169 if (FW_EUI64_EQUAL(fwdev->eui, *eui)) 170 break; 171 FW_GUNLOCK(fc); 172 173 if (fwdev == NULL) 174 return NULL; 175 if (fwdev->status == FWDEVINVAL) 176 return NULL; 177 return fwdev; 178} 179 180/* 181 * Async. request procedure for userland application. 182 */ 183int 184fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer) 185{ 186 int err = 0; 187 struct fw_xferq *xferq; 188 int len; 189 struct fw_pkt *fp; 190 int tcode; 191 struct tcode_info *info; 192 193 if (xfer == NULL) 194 return EINVAL; 195 if (xfer->hand == NULL) { 196 printf("hand == NULL\n"); 197 return EINVAL; 198 } 199 fp = &xfer->send.hdr; 200 201 tcode = fp->mode.common.tcode & 0xf; 202 info = &fc->tcode[tcode]; 203 if (info->flag == 0) { 204 printf("invalid tcode=%x\n", tcode); 205 return EINVAL; 206 } 207 208 /* XXX allow bus explore packets only after bus rest */ 209 if ((fc->status < FWBUSEXPLORE) && 210 ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) || 211 (fp->mode.rreqq.dest_lo < 0xf0000000) || 212 (fp->mode.rreqq.dest_lo >= 0xf0001000))) { 213 xfer->resp = EAGAIN; 214 xfer->flag = FWXF_BUSY; 215 return (EAGAIN); 216 } 217 218 if (info->flag & FWTI_REQ) 219 xferq = fc->atq; 220 else 221 xferq = fc->ats; 222 len = info->hdr_len; 223 if (xfer->send.pay_len > MAXREC(fc->maxrec)) { 224 printf("send.pay_len > maxrec\n"); 225 return EINVAL; 226 } 227 if (info->flag & FWTI_BLOCK_STR) 228 len = fp->mode.stream.len; 229 else if (info->flag & FWTI_BLOCK_ASY) 230 len = fp->mode.rresb.len; 231 else 232 len = 0; 233 if (len != xfer->send.pay_len) { 234 printf("len(%d) != send.pay_len(%d) %s(%x)\n", 235 len, xfer->send.pay_len, tcode_str[tcode], tcode); 236 return EINVAL; 237 } 238 239 if (xferq->start == NULL) { 240 printf("xferq->start == NULL\n"); 241 return EINVAL; 242 } 243 if (!(xferq->queued < xferq->maxq)) { 244 device_printf(fc->bdev, "Discard a packet (queued=%d)\n", 245 xferq->queued); 246 return EAGAIN; 247 } 248 249 xfer->tl = -1; 250 if (info->flag & FWTI_TLABEL) { 251 if (fw_get_tlabel(fc, xfer) < 0) 252 return EAGAIN; 253 } 254 255 xfer->resp = 0; 256 xfer->fc = fc; 257 xfer->q = xferq; 258 259 fw_asystart(xfer); 260 return err; 261} 262 263/* 264 * Wakeup blocked process. 265 */ 266void 267fw_xferwake(struct fw_xfer *xfer) 268{ 269 struct mtx *lock = &xfer->fc->wait_lock; 270 271 mtx_lock(lock); 272 xfer->flag |= FWXF_WAKE; 273 mtx_unlock(lock); 274 275 wakeup(xfer); 276 return; 277} 278 279int 280fw_xferwait(struct fw_xfer *xfer) 281{ 282 struct mtx *lock = &xfer->fc->wait_lock; 283 int err = 0; 284 285 mtx_lock(lock); 286 while ((xfer->flag & FWXF_WAKE) == 0) 287 err = msleep(xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0); 288 mtx_unlock(lock); 289 290 return (err); 291} 292 293/* 294 * Async. request with given xfer structure. 295 */ 296static void 297fw_asystart(struct fw_xfer *xfer) 298{ 299 struct firewire_comm *fc = xfer->fc; 300 301 /* Protect from interrupt/timeout */ 302 FW_GLOCK(fc); 303 xfer->flag = FWXF_INQ; 304 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); 305#if 0 306 xfer->q->queued++; 307#endif 308 FW_GUNLOCK(fc); 309 /* XXX just queue for mbuf */ 310 if (xfer->mbuf == NULL) 311 xfer->q->start(fc); 312 return; 313} 314 315static void 316firewire_identify(driver_t *driver, device_t parent) 317{ 318 BUS_ADD_CHILD(parent, 0, "firewire", -1); 319} 320 321static int 322firewire_probe(device_t dev) 323{ 324 device_set_desc(dev, "IEEE1394(FireWire) bus"); 325 return (0); 326} 327 328/* Just use a per-packet callout? */ 329static void 330firewire_xfer_timeout(void *arg, int pending) 331{ 332 struct firewire_comm *fc = (struct firewire_comm *)arg; 333 struct fw_xfer *xfer, *txfer; 334 struct timeval tv; 335 struct timeval split_timeout; 336 STAILQ_HEAD(, fw_xfer) xfer_timeout; 337 int i; 338 339 split_timeout.tv_sec = 0; 340 split_timeout.tv_usec = 200 * 1000; /* 200 msec */ 341 342 microtime(&tv); 343 timevalsub(&tv, &split_timeout); 344 STAILQ_INIT(&xfer_timeout); 345 346 mtx_lock(&fc->tlabel_lock); 347 for (i = 0; i < nitems(fc->tlabels); i++) { 348 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 349 if ((xfer->flag & FWXF_SENT) == 0) 350 /* not sent yet */ 351 break; 352 if (timevalcmp(&xfer->tv, &tv, >)) 353 /* the rests are newer than this */ 354 break; 355 device_printf(fc->bdev, 356 "split transaction timeout: tl=0x%x flag=0x%02x\n", 357 i, xfer->flag); 358 fw_dump_hdr(&xfer->send.hdr, "send"); 359 xfer->resp = ETIMEDOUT; 360 xfer->tl = -1; 361 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 362 STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel); 363 } 364 } 365 mtx_unlock(&fc->tlabel_lock); 366 fc->timeout(fc); 367 368 STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer) 369 xfer->hand(xfer); 370} 371 372#define WATCHDOG_HZ 10 373static void 374firewire_watchdog(void *arg) 375{ 376 struct firewire_comm *fc; 377 static int watchdog_clock = 0; 378 379 fc = arg; 380 381 /* 382 * At boot stage, the device interrupt is disabled and 383 * We encounter a timeout easily. To avoid this, 384 * ignore clock interrupt for a while. 385 */ 386 if (watchdog_clock > WATCHDOG_HZ * 15) 387 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout); 388 else 389 watchdog_clock++; 390 391 callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ, 392 firewire_watchdog, fc); 393} 394 395/* 396 * The attach routine. 397 */ 398static int 399firewire_attach(device_t dev) 400{ 401 int unit; 402 struct firewire_softc *sc = device_get_softc(dev); 403 device_t pa = device_get_parent(dev); 404 struct firewire_comm *fc; 405 406 fc = device_get_softc(pa); 407 sc->fc = fc; 408 fc->status = FWBUSNOTREADY; 409 410 unit = device_get_unit(dev); 411 if (fc->nisodma > FWMAXNDMA) 412 fc->nisodma = FWMAXNDMA; 413 414 fwdev_makedev(sc); 415 416 fc->crom_src_buf = malloc(sizeof(struct crom_src_buf), 417 M_FW, M_NOWAIT | M_ZERO); 418 if (fc->crom_src_buf == NULL) { 419 device_printf(fc->dev, 420 "%s: unable to allocate crom src buffer\n", __func__); 421 return ENOMEM; 422 } 423 fc->topology_map = malloc(sizeof(struct fw_topology_map), 424 M_FW, M_NOWAIT | M_ZERO); 425 if (fc->topology_map == NULL) { 426 device_printf(fc->dev, "%s: unable to allocate topology map\n", 427 __func__); 428 free(fc->crom_src_buf, M_FW); 429 return ENOMEM; 430 } 431 fc->speed_map = malloc(sizeof(struct fw_speed_map), 432 M_FW, M_NOWAIT | M_ZERO); 433 if (fc->speed_map == NULL) { 434 device_printf(fc->dev, "%s: unable to allocate speed map\n", 435 __func__); 436 free(fc->crom_src_buf, M_FW); 437 free(fc->topology_map, M_FW); 438 return ENOMEM; 439 } 440 441 mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF); 442 mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF); 443 CALLOUT_INIT(&fc->timeout_callout); 444 CALLOUT_INIT(&fc->bmr_callout); 445 CALLOUT_INIT(&fc->busprobe_callout); 446 TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, fc); 447 448 callout_reset(&sc->fc->timeout_callout, hz, 449 firewire_watchdog, sc->fc); 450 451 /* create thread */ 452 kproc_create(fw_bus_probe_thread, fc, &fc->probe_thread, 453 0, 0, "fw%d_probe", unit); 454 455 /* Locate our children */ 456 bus_generic_probe(dev); 457 458 /* launch attachement of the added children */ 459 bus_generic_attach(dev); 460 461 /* bus_reset */ 462 FW_GLOCK(fc); 463 fw_busreset(fc, FWBUSNOTREADY); 464 FW_GUNLOCK(fc); 465 fc->ibr(fc); 466 467 return 0; 468} 469 470/* 471 * Attach it as child. 472 */ 473static device_t 474firewire_add_child(device_t dev, u_int order, const char *name, int unit) 475{ 476 device_t child; 477 struct firewire_softc *sc; 478 479 sc = device_get_softc(dev); 480 child = device_add_child(dev, name, unit); 481 if (child) { 482 device_set_ivars(child, sc->fc); 483 device_probe_and_attach(child); 484 } 485 486 return child; 487} 488 489static int 490firewire_resume(device_t dev) 491{ 492 struct firewire_softc *sc; 493 494 sc = device_get_softc(dev); 495 sc->fc->status = FWBUSNOTREADY; 496 497 bus_generic_resume(dev); 498 499 return (0); 500} 501 502/* 503 * Detach it. 504 */ 505static int 506firewire_detach(device_t dev) 507{ 508 struct firewire_softc *sc; 509 struct firewire_comm *fc; 510 struct fw_device *fwdev, *fwdev_next; 511 int err; 512 513 sc = device_get_softc(dev); 514 fc = sc->fc; 515 mtx_lock(&fc->wait_lock); 516 fc->status = FWBUSDETACH; 517 wakeup(fc); 518 if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60)) 519 printf("firewire probe thread didn't die\n"); 520 mtx_unlock(&fc->wait_lock); 521 522 if (fc->arq != 0 && fc->arq->maxq > 0) 523 fw_drain_txq(fc); 524 525 if ((err = fwdev_destroydev(sc)) != 0) 526 return err; 527 528 if ((err = bus_generic_detach(dev)) != 0) 529 return err; 530 531 callout_stop(&fc->timeout_callout); 532 callout_stop(&fc->bmr_callout); 533 callout_stop(&fc->busprobe_callout); 534 535 /* XXX xfer_free and untimeout on all xfers */ 536 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; 537 fwdev = fwdev_next) { 538 fwdev_next = STAILQ_NEXT(fwdev, link); 539 free(fwdev, M_FW); 540 } 541 free(fc->topology_map, M_FW); 542 free(fc->speed_map, M_FW); 543 free(fc->crom_src_buf, M_FW); 544 545 mtx_destroy(&fc->tlabel_lock); 546 mtx_destroy(&fc->wait_lock); 547 return (0); 548} 549 550static void 551fw_xferq_drain(struct fw_xferq *xferq) 552{ 553 struct fw_xfer *xfer; 554 555 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) { 556 STAILQ_REMOVE_HEAD(&xferq->q, link); 557#if 0 558 xferq->queued--; 559#endif 560 xfer->resp = EAGAIN; 561 xfer->flag = FWXF_SENTERR; 562 fw_xfer_done(xfer); 563 } 564} 565 566void 567fw_drain_txq(struct firewire_comm *fc) 568{ 569 struct fw_xfer *xfer, *txfer; 570 STAILQ_HEAD(, fw_xfer) xfer_drain; 571 int i; 572 573 STAILQ_INIT(&xfer_drain); 574 575 FW_GLOCK(fc); 576 fw_xferq_drain(fc->atq); 577 fw_xferq_drain(fc->ats); 578 for (i = 0; i < fc->nisodma; i++) 579 fw_xferq_drain(fc->it[i]); 580 FW_GUNLOCK(fc); 581 582 mtx_lock(&fc->tlabel_lock); 583 for (i = 0; i < 0x40; i++) 584 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 585 if (firewire_debug) 586 printf("tl=%d flag=%d\n", i, xfer->flag); 587 xfer->tl = -1; 588 xfer->resp = EAGAIN; 589 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 590 STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel); 591 } 592 mtx_unlock(&fc->tlabel_lock); 593 594 STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer) 595 xfer->hand(xfer); 596} 597 598static void 599fw_reset_csr(struct firewire_comm *fc) 600{ 601 int i; 602 603 CSRARC(fc, STATE_CLEAR) 604 = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 605 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 606 CSRARC(fc, NODE_IDS) = 0x3f; 607 608 CSRARC(fc, TOPO_MAP + 8) = 0; 609 fc->irm = -1; 610 611 fc->max_node = -1; 612 613 for (i = 2; i < 0x100 / 4 - 2; i++) { 614 CSRARC(fc, SPED_MAP + i * 4) = 0; 615 } 616 CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 617 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 618 CSRARC(fc, RESET_START) = 0; 619 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0; 620 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19; 621 CSRARC(fc, CYCLE_TIME) = 0x0; 622 CSRARC(fc, BUS_TIME) = 0x0; 623 CSRARC(fc, BUS_MGR_ID) = 0x3f; 624 CSRARC(fc, BANDWIDTH_AV) = 4915; 625 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; 626 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; 627 CSRARC(fc, IP_CHANNELS) = (1U << 31); 628 629 CSRARC(fc, CONF_ROM) = 0x04 << 24; 630 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */ 631 CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 | 632 1 << 28 | 0xff << 16 | 0x09 << 8; 633 CSRARC(fc, CONF_ROM + 0xc) = 0; 634 635 /* DV depend CSRs see blue book */ 636 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON; 637 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON; 638 639 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14); 640 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 641} 642 643static void 644fw_init_crom(struct firewire_comm *fc) 645{ 646 struct crom_src *src; 647 648 src = &fc->crom_src_buf->src; 649 bzero(src, sizeof(struct crom_src)); 650 651 /* BUS info sample */ 652 src->hdr.info_len = 4; 653 654 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394; 655 656 src->businfo.irmc = 1; 657 src->businfo.cmc = 1; 658 src->businfo.isc = 1; 659 src->businfo.bmc = 1; 660 src->businfo.pmc = 0; 661 src->businfo.cyc_clk_acc = 100; 662 src->businfo.max_rec = fc->maxrec; 663 src->businfo.max_rom = MAXROM_4; 664#define FW_GENERATION_CHANGEABLE 2 665 src->businfo.generation = FW_GENERATION_CHANGEABLE; 666 src->businfo.link_spd = fc->speed; 667 668 src->businfo.eui64.hi = fc->eui.hi; 669 src->businfo.eui64.lo = fc->eui.lo; 670 671 STAILQ_INIT(&src->chunk_list); 672 673 fc->crom_src = src; 674 fc->crom_root = &fc->crom_src_buf->root; 675} 676 677static void 678fw_reset_crom(struct firewire_comm *fc) 679{ 680 struct crom_src_buf *buf; 681 struct crom_src *src; 682 struct crom_chunk *root; 683 684 buf = fc->crom_src_buf; 685 src = fc->crom_src; 686 root = fc->crom_root; 687 688 STAILQ_INIT(&src->chunk_list); 689 690 bzero(root, sizeof(struct crom_chunk)); 691 crom_add_chunk(src, NULL, root, 0); 692 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */ 693 /* private company_id */ 694 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); 695 crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project"); 696 crom_add_entry(root, CSRKEY_HW, __FreeBSD_version); 697 mtx_lock(&prison0.pr_mtx); 698 crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname); 699 mtx_unlock(&prison0.pr_mtx); 700} 701 702/* 703 * Called after bus reset. 704 */ 705void 706fw_busreset(struct firewire_comm *fc, uint32_t new_status) 707{ 708 struct firewire_dev_comm *fdc; 709 struct crom_src *src; 710 device_t *devlistp; 711 uint32_t *newrom; 712 int i, devcnt; 713 714 FW_GLOCK_ASSERT(fc); 715 if (fc->status == FWBUSMGRELECT) 716 callout_stop(&fc->bmr_callout); 717 718 fc->status = new_status; 719 fw_reset_csr(fc); 720 721 if (fc->status == FWBUSNOTREADY) 722 fw_init_crom(fc); 723 724 fw_reset_crom(fc); 725 726 if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) { 727 for (i = 0; i < devcnt; i++) 728 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 729 fdc = device_get_softc(devlistp[i]); 730 if (fdc->post_busreset != NULL) 731 fdc->post_busreset(fdc); 732 } 733 free(devlistp, M_TEMP); 734 } 735 736 src = &fc->crom_src_buf->src; 737 /* 738 * If the old config rom needs to be overwritten, 739 * bump the businfo.generation indicator to 740 * indicate that we need to be reprobed 741 * See 1394a-2000 8.3.2.5.4 for more details. 742 * generation starts at 2 and rolls over at 0xF 743 * back to 2. 744 * 745 * A generation of 0 indicates a device 746 * that is not 1394a-2000 compliant. 747 * A generation of 1 indicates a device that 748 * does not change it's Bus Info Block or 749 * Configuration ROM. 750 */ 751#define FW_MAX_GENERATION 0xF 752 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); 753 src = &fc->crom_src_buf->src; 754 crom_load(src, newrom, CROMSIZE); 755 if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) { 756 /* Bump generation and reload. */ 757 src->businfo.generation++; 758 759 /* Handle generation count wraps. */ 760 if (src->businfo.generation < FW_GENERATION_CHANGEABLE) 761 src->businfo.generation = FW_GENERATION_CHANGEABLE; 762 763 /* Recalculate CRC to account for generation change. */ 764 crom_load(src, newrom, CROMSIZE); 765 bcopy(newrom, fc->config_rom, CROMSIZE); 766 } 767 free(newrom, M_FW); 768} 769 770/* Call once after reboot */ 771void fw_init(struct firewire_comm *fc) 772{ 773 int i; 774#ifdef FW_VMACCESS 775 struct fw_xfer *xfer; 776 struct fw_bind *fwb; 777#endif 778 779 fc->arq->queued = 0; 780 fc->ars->queued = 0; 781 fc->atq->queued = 0; 782 fc->ats->queued = 0; 783 784 fc->arq->buf = NULL; 785 fc->ars->buf = NULL; 786 fc->atq->buf = NULL; 787 fc->ats->buf = NULL; 788 789 fc->arq->flag = 0; 790 fc->ars->flag = 0; 791 fc->atq->flag = 0; 792 fc->ats->flag = 0; 793 794 STAILQ_INIT(&fc->atq->q); 795 STAILQ_INIT(&fc->ats->q); 796 797 for (i = 0; i < fc->nisodma; i++) { 798 fc->it[i]->queued = 0; 799 fc->ir[i]->queued = 0; 800 801 fc->it[i]->start = NULL; 802 fc->ir[i]->start = NULL; 803 804 fc->it[i]->buf = NULL; 805 fc->ir[i]->buf = NULL; 806 807 fc->it[i]->flag = FWXFERQ_STREAM; 808 fc->ir[i]->flag = FWXFERQ_STREAM; 809 810 STAILQ_INIT(&fc->it[i]->q); 811 STAILQ_INIT(&fc->ir[i]->q); 812 } 813 814 fc->arq->maxq = FWMAXQUEUE; 815 fc->ars->maxq = FWMAXQUEUE; 816 fc->atq->maxq = FWMAXQUEUE; 817 fc->ats->maxq = FWMAXQUEUE; 818 819 for (i = 0; i < fc->nisodma; i++) { 820 fc->ir[i]->maxq = FWMAXQUEUE; 821 fc->it[i]->maxq = FWMAXQUEUE; 822 } 823 824 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16; 825 CSRARC(fc, TOPO_MAP + 4) = 1; 826 CSRARC(fc, SPED_MAP) = 0x3f1 << 16; 827 CSRARC(fc, SPED_MAP + 4) = 1; 828 829 STAILQ_INIT(&fc->devices); 830 831 /* Initialize Async handlers */ 832 STAILQ_INIT(&fc->binds); 833 for (i = 0; i < 0x40; i++) { 834 STAILQ_INIT(&fc->tlabels[i]); 835 } 836 837/* DV depend CSRs see blue book */ 838#if 0 839 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */ 840 CSRARC(fc, oPCR) = 0x8000007a; 841 for (i = 4; i < 0x7c/4; i += 4) { 842 CSRARC(fc, i + oPCR) = 0x8000007a; 843 } 844 845 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */ 846 CSRARC(fc, iPCR) = 0x803f0000; 847 for (i = 4; i < 0x7c/4; i += 4) { 848 CSRARC(fc, i + iPCR) = 0x0; 849 } 850#endif 851 852 fc->crom_src_buf = NULL; 853 854#ifdef FW_VMACCESS 855 xfer = fw_xfer_alloc(); 856 if (xfer == NULL) 857 return; 858 859 fwb = malloc(sizeof(struct fw_bind), M_FW, M_NOWAIT); 860 if (fwb == NULL) { 861 fw_xfer_free(xfer); 862 return; 863 } 864 xfer->hand = fw_vmaccess; 865 xfer->fc = fc; 866 xfer->sc = NULL; 867 868 fwb->start_hi = 0x2; 869 fwb->start_lo = 0; 870 fwb->addrlen = 0xffffffff; 871 fwb->xfer = xfer; 872 fw_bindadd(fc, fwb); 873#endif 874} 875 876#define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)? -1 : \ 877 ((fwb)->end < (addr)) ? 1 : 0) 878 879/* 880 * To lookup bound process from IEEE1394 address. 881 */ 882struct fw_bind * 883fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo) 884{ 885 u_int64_t addr; 886 struct fw_bind *tfw, *r = NULL; 887 888 addr = ((u_int64_t)dest_hi << 32) | dest_lo; 889 FW_GLOCK(fc); 890 STAILQ_FOREACH(tfw, &fc->binds, fclist) 891 if (BIND_CMP(addr, tfw) == 0) { 892 r = tfw; 893 break; 894 } 895 FW_GUNLOCK(fc); 896 return (r); 897} 898 899/* 900 * To bind IEEE1394 address block to process. 901 */ 902int 903fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb) 904{ 905 struct fw_bind *tfw, *prev = NULL; 906 int r = 0; 907 908 if (fwb->start > fwb->end) { 909 printf("%s: invalid range\n", __func__); 910 return EINVAL; 911 } 912 913 FW_GLOCK(fc); 914 STAILQ_FOREACH(tfw, &fc->binds, fclist) { 915 if (fwb->end < tfw->start) 916 break; 917 prev = tfw; 918 } 919 if (prev == NULL) 920 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist); 921 else if (prev->end < fwb->start) 922 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist); 923 else { 924 printf("%s: bind failed\n", __func__); 925 r = EBUSY; 926 } 927 FW_GUNLOCK(fc); 928 return (r); 929} 930 931/* 932 * To free IEEE1394 address block. 933 */ 934int 935fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb) 936{ 937#if 0 938 struct fw_xfer *xfer, *next; 939#endif 940 struct fw_bind *tfw; 941 int s; 942 943 s = splfw(); 944 FW_GLOCK(fc); 945 STAILQ_FOREACH(tfw, &fc->binds, fclist) 946 if (tfw == fwb) { 947 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist); 948 goto found; 949 } 950 951 printf("%s: no such binding\n", __func__); 952 FW_GUNLOCK(fc); 953 splx(s); 954 return (1); 955found: 956#if 0 957 /* shall we do this? */ 958 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) { 959 next = STAILQ_NEXT(xfer, link); 960 fw_xfer_free(xfer); 961 } 962 STAILQ_INIT(&fwb->xferlist); 963#endif 964 FW_GUNLOCK(fc); 965 966 splx(s); 967 return 0; 968} 969 970int 971fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type, 972 int slen, int rlen, int n, 973 struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *)) 974{ 975 int i, s; 976 struct fw_xfer *xfer; 977 978 for (i = 0; i < n; i++) { 979 xfer = fw_xfer_alloc_buf(type, slen, rlen); 980 if (xfer == NULL) 981 return (i); 982 xfer->fc = fc; 983 xfer->sc = sc; 984 xfer->hand = hand; 985 s = splfw(); 986 STAILQ_INSERT_TAIL(q, xfer, link); 987 splx(s); 988 } 989 return (n); 990} 991 992void 993fw_xferlist_remove(struct fw_xferlist *q) 994{ 995 struct fw_xfer *xfer, *next; 996 997 for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) { 998 next = STAILQ_NEXT(xfer, link); 999 fw_xfer_free_buf(xfer); 1000 } 1001 STAILQ_INIT(q); 1002} 1003/* 1004 * dump packet header 1005 */ 1006static void 1007fw_dump_hdr(struct fw_pkt *fp, char *prefix) 1008{ 1009 printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x " 1010 "src=0x%03x\n", prefix, 1011 fp->mode.hdr.dst & 0x3f, 1012 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3, 1013 fp->mode.hdr.tcode, fp->mode.hdr.pri, 1014 fp->mode.hdr.src); 1015} 1016 1017/* 1018 * To free transaction label. 1019 */ 1020static void 1021fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer) 1022{ 1023 struct fw_xfer *txfer; 1024 1025 mtx_lock(&fc->tlabel_lock); 1026 if (xfer->tl < 0) { 1027 mtx_unlock(&fc->tlabel_lock); 1028 return; 1029 } 1030 /* make sure the label is allocated */ 1031 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) 1032 if (txfer == xfer) 1033 break; 1034 if (txfer == NULL) { 1035 printf("%s: the xfer is not in the queue " 1036 "(tlabel=%d, flag=0x%x)\n", 1037 __FUNCTION__, xfer->tl, xfer->flag); 1038 fw_dump_hdr(&xfer->send.hdr, "send"); 1039 fw_dump_hdr(&xfer->recv.hdr, "recv"); 1040 kdb_backtrace(); 1041 mtx_unlock(&fc->tlabel_lock); 1042 return; 1043 } 1044 1045 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); 1046 xfer->tl = -1; 1047 mtx_unlock(&fc->tlabel_lock); 1048 return; 1049} 1050 1051/* 1052 * To obtain XFER structure by transaction label. 1053 */ 1054static struct fw_xfer * 1055fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode) 1056{ 1057 struct fw_xfer *xfer; 1058 int s = splfw(); 1059 int req; 1060 1061 mtx_lock(&fc->tlabel_lock); 1062 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) 1063 if (xfer->send.hdr.mode.hdr.dst == node) { 1064 mtx_unlock(&fc->tlabel_lock); 1065 splx(s); 1066 KASSERT(xfer->tl == tlabel, 1067 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel)); 1068 /* extra sanity check */ 1069 req = xfer->send.hdr.mode.hdr.tcode; 1070 if (xfer->fc->tcode[req].valid_res != tcode) { 1071 printf("%s: invalid response tcode " 1072 "(0x%x for 0x%x)\n", __FUNCTION__, 1073 tcode, req); 1074 return (NULL); 1075 } 1076 1077 if (firewire_debug > 2) 1078 printf("fw_tl2xfer: found tl=%d\n", tlabel); 1079 return (xfer); 1080 } 1081 mtx_unlock(&fc->tlabel_lock); 1082 if (firewire_debug > 1) 1083 printf("fw_tl2xfer: not found tl=%d\n", tlabel); 1084 splx(s); 1085 return (NULL); 1086} 1087 1088/* 1089 * To allocate IEEE1394 XFER structure. 1090 */ 1091struct fw_xfer * 1092fw_xfer_alloc(struct malloc_type *type) 1093{ 1094 struct fw_xfer *xfer; 1095 1096 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO); 1097 if (xfer == NULL) 1098 return xfer; 1099 1100 xfer->malloc = type; 1101 1102 return xfer; 1103} 1104 1105struct fw_xfer * 1106fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len) 1107{ 1108 struct fw_xfer *xfer; 1109 1110 xfer = fw_xfer_alloc(type); 1111 if (xfer == NULL) 1112 return (NULL); 1113 xfer->send.pay_len = send_len; 1114 xfer->recv.pay_len = recv_len; 1115 if (send_len > 0) { 1116 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO); 1117 if (xfer->send.payload == NULL) { 1118 fw_xfer_free(xfer); 1119 return (NULL); 1120 } 1121 } 1122 if (recv_len > 0) { 1123 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT); 1124 if (xfer->recv.payload == NULL) { 1125 if (xfer->send.payload != NULL) 1126 free(xfer->send.payload, type); 1127 fw_xfer_free(xfer); 1128 return (NULL); 1129 } 1130 } 1131 return (xfer); 1132} 1133 1134/* 1135 * IEEE1394 XFER post process. 1136 */ 1137void 1138fw_xfer_done(struct fw_xfer *xfer) 1139{ 1140 if (xfer->hand == NULL) { 1141 printf("hand == NULL\n"); 1142 return; 1143 } 1144 1145 if (xfer->fc == NULL) 1146 panic("fw_xfer_done: why xfer->fc is NULL?"); 1147 1148 fw_tl_free(xfer->fc, xfer); 1149 xfer->hand(xfer); 1150} 1151 1152void 1153fw_xfer_unload(struct fw_xfer *xfer) 1154{ 1155 1156 if (xfer == NULL) 1157 return; 1158 1159 if (xfer->fc != NULL) { 1160 FW_GLOCK(xfer->fc); 1161 if (xfer->flag & FWXF_INQ) { 1162 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); 1163 xfer->flag &= ~FWXF_INQ; 1164 #if 0 1165 xfer->q->queued--; 1166 #endif 1167 } 1168 FW_GUNLOCK(xfer->fc); 1169 1170 /* 1171 * Ensure that any tlabel owner can't access this 1172 * xfer after it's freed. 1173 */ 1174 fw_tl_free(xfer->fc, xfer); 1175#if 1 1176 if (xfer->flag & FWXF_START) 1177 /* 1178 * This could happen if: 1179 * 1. We call fwohci_arcv() before fwohci_txd(). 1180 * 2. firewire_watch() is called. 1181 */ 1182 printf("fw_xfer_free FWXF_START\n"); 1183#endif 1184 } 1185 xfer->flag = FWXF_INIT; 1186 xfer->resp = 0; 1187} 1188 1189/* 1190 * To free IEEE1394 XFER structure. 1191 */ 1192void 1193fw_xfer_free_buf(struct fw_xfer *xfer) 1194{ 1195 if (xfer == NULL) { 1196 printf("%s: xfer == NULL\n", __func__); 1197 return; 1198 } 1199 fw_xfer_unload(xfer); 1200 if (xfer->send.payload != NULL) 1201 free(xfer->send.payload, xfer->malloc); 1202 if (xfer->recv.payload != NULL) 1203 free(xfer->recv.payload, xfer->malloc); 1204 free(xfer, xfer->malloc); 1205} 1206 1207void 1208fw_xfer_free(struct fw_xfer *xfer) 1209{ 1210 if (xfer == NULL) { 1211 printf("%s: xfer == NULL\n", __func__); 1212 return; 1213 } 1214 fw_xfer_unload(xfer); 1215 free(xfer, xfer->malloc); 1216} 1217 1218void 1219fw_asy_callback_free(struct fw_xfer *xfer) 1220{ 1221#if 0 1222 printf("asyreq done flag=0x%02x resp=%d\n", 1223 xfer->flag, xfer->resp); 1224#endif 1225 fw_xfer_free(xfer); 1226} 1227 1228/* 1229 * To configure PHY. 1230 */ 1231static void 1232fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count) 1233{ 1234 struct fw_xfer *xfer; 1235 struct fw_pkt *fp; 1236 1237 fc->status = FWBUSPHYCONF; 1238 1239 xfer = fw_xfer_alloc(M_FWXFER); 1240 if (xfer == NULL) 1241 return; 1242 xfer->fc = fc; 1243 xfer->hand = fw_asy_callback_free; 1244 1245 fp = &xfer->send.hdr; 1246 fp->mode.ld[1] = 0; 1247 if (root_node >= 0) 1248 fp->mode.ld[1] |= (1 << 23) | (root_node & 0x3f) << 24; 1249 if (gap_count >= 0) 1250 fp->mode.ld[1] |= (1 << 22) | (gap_count & 0x3f) << 16; 1251 fp->mode.ld[2] = ~fp->mode.ld[1]; 1252/* XXX Dangerous, how to pass PHY packet to device driver */ 1253 fp->mode.common.tcode |= FWTCODE_PHY; 1254 1255 if (firewire_debug) 1256 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n", 1257 __func__, root_node, gap_count); 1258 fw_asyreq(fc, -1, xfer); 1259} 1260 1261/* 1262 * Dump self ID. 1263 */ 1264static void 1265fw_print_sid(uint32_t sid) 1266{ 1267 union fw_self_id *s; 1268 s = (union fw_self_id *) &sid; 1269 if (s->p0.sequel) { 1270 if (s->p1.sequence_num == FW_SELF_ID_PAGE0) { 1271 printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d" 1272 "p8:%d p9:%d p10:%d\n", 1273 s->p1.phy_id, s->p1.port3, s->p1.port4, 1274 s->p1.port5, s->p1.port6, s->p1.port7, 1275 s->p1.port8, s->p1.port9, s->p1.port10); 1276 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) { 1277 printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n", 1278 s->p2.phy_id, s->p2.port11, s->p2.port12, 1279 s->p2.port13, s->p2.port14, s->p2.port15); 1280 } else { 1281 printf("node:%d Unknown Self ID Page number %d\n", 1282 s->p1.phy_id, s->p1.sequence_num); 1283 } 1284 } else { 1285 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d" 1286 " p0:%d p1:%d p2:%d i:%d m:%d\n", 1287 s->p0.phy_id, s->p0.link_active, s->p0.gap_count, 1288 s->p0.phy_speed, s->p0.contender, 1289 s->p0.power_class, s->p0.port0, s->p0.port1, 1290 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets); 1291 } 1292} 1293 1294/* 1295 * To receive self ID. 1296 */ 1297void fw_sidrcv(struct firewire_comm *fc, uint32_t *sid, u_int len) 1298{ 1299 uint32_t *p; 1300 union fw_self_id *self_id; 1301 u_int i, j, node, c_port = 0, i_branch = 0; 1302 1303 fc->sid_cnt = len / (sizeof(uint32_t) * 2); 1304 fc->max_node = fc->nodeid & 0x3f; 1305 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16; 1306 fc->status = FWBUSCYMELECT; 1307 fc->topology_map->crc_len = 2; 1308 fc->topology_map->generation++; 1309 fc->topology_map->self_id_count = 0; 1310 fc->topology_map->node_count= 0; 1311 fc->speed_map->generation++; 1312 fc->speed_map->crc_len = 1 + (64 * 64 + 3) / 4; 1313 self_id = &fc->topology_map->self_id[0]; 1314 for (i = 0; i < fc->sid_cnt; i++) { 1315 if (sid[1] != ~sid[0]) { 1316 device_printf(fc->bdev, 1317 "%s: ERROR invalid self-id packet\n", __func__); 1318 sid += 2; 1319 continue; 1320 } 1321 *self_id = *((union fw_self_id *)sid); 1322 fc->topology_map->crc_len++; 1323 if (self_id->p0.sequel == 0) { 1324 fc->topology_map->node_count++; 1325 c_port = 0; 1326 if (firewire_debug) 1327 fw_print_sid(sid[0]); 1328 node = self_id->p0.phy_id; 1329 if (fc->max_node < node) 1330 fc->max_node = self_id->p0.phy_id; 1331 /* XXX I'm not sure this is the right speed_map */ 1332 fc->speed_map->speed[node][node] = 1333 self_id->p0.phy_speed; 1334 for (j = 0; j < node; j++) { 1335 fc->speed_map->speed[j][node] = 1336 fc->speed_map->speed[node][j] = 1337 min(fc->speed_map->speed[j][j], 1338 self_id->p0.phy_speed); 1339 } 1340 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) && 1341 (self_id->p0.link_active && self_id->p0.contender)) 1342 fc->irm = self_id->p0.phy_id; 1343 if (self_id->p0.port0 >= 0x2) 1344 c_port++; 1345 if (self_id->p0.port1 >= 0x2) 1346 c_port++; 1347 if (self_id->p0.port2 >= 0x2) 1348 c_port++; 1349 } 1350 if (c_port > 2) 1351 i_branch += (c_port - 2); 1352 sid += 2; 1353 self_id++; 1354 fc->topology_map->self_id_count++; 1355 } 1356 /* CRC */ 1357 fc->topology_map->crc = fw_crc16( 1358 (uint32_t *)&fc->topology_map->generation, 1359 fc->topology_map->crc_len * 4); 1360 fc->speed_map->crc = fw_crc16( 1361 (uint32_t *)&fc->speed_map->generation, 1362 fc->speed_map->crc_len * 4); 1363 /* byteswap and copy to CSR */ 1364 p = (uint32_t *)fc->topology_map; 1365 for (i = 0; i <= fc->topology_map->crc_len; i++) 1366 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++); 1367 p = (uint32_t *)fc->speed_map; 1368 CSRARC(fc, SPED_MAP) = htonl(*p++); 1369 CSRARC(fc, SPED_MAP + 4) = htonl(*p++); 1370 /* don't byte-swap uint8_t array */ 1371 bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1) * 4); 1372 1373 fc->max_hop = fc->max_node - i_branch; 1374 device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n", 1375 fc->max_node + 1, fc->max_hop, 1376 (fc->irm == -1) ? "Not IRM capable" : "cable IRM", 1377 fc->irm, (fc->irm == fc->nodeid) ? " (me) " : ""); 1378 1379 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) { 1380 if (fc->irm == fc->nodeid) { 1381 fc->status = FWBUSMGRDONE; 1382 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm); 1383 fw_bmr(fc); 1384 } else { 1385 fc->status = FWBUSMGRELECT; 1386 callout_reset(&fc->bmr_callout, hz / 8, 1387 fw_try_bmr, fc); 1388 } 1389 } else 1390 fc->status = FWBUSMGRDONE; 1391 1392 callout_reset(&fc->busprobe_callout, hz / 4, fw_bus_probe, fc); 1393} 1394 1395/* 1396 * To probe devices on the IEEE1394 bus. 1397 */ 1398static void 1399fw_bus_probe(void *arg) 1400{ 1401 struct firewire_comm *fc; 1402 struct fw_device *fwdev; 1403 int s; 1404 1405 s = splfw(); 1406 fc = arg; 1407 fc->status = FWBUSEXPLORE; 1408 1409 /* Invalidate all devices, just after bus reset. */ 1410 if (firewire_debug) 1411 device_printf(fc->bdev, "%s:" 1412 "iterate and invalidate all nodes\n", 1413 __func__); 1414 STAILQ_FOREACH(fwdev, &fc->devices, link) 1415 if (fwdev->status != FWDEVINVAL) { 1416 fwdev->status = FWDEVINVAL; 1417 fwdev->rcnt = 0; 1418 if (firewire_debug) 1419 device_printf(fc->bdev, "%s:" 1420 "Invalidate Dev ID: %08x%08x\n", 1421 __func__, fwdev->eui.hi, fwdev->eui.lo); 1422 } else { 1423 if (firewire_debug) 1424 device_printf(fc->bdev, "%s:" 1425 "Dev ID: %08x%08x already invalid\n", 1426 __func__, fwdev->eui.hi, fwdev->eui.lo); 1427 } 1428 splx(s); 1429 1430 wakeup(fc); 1431} 1432 1433static int 1434fw_explore_read_quads(struct fw_device *fwdev, int offset, 1435 uint32_t *quad, int length) 1436{ 1437 struct fw_xfer *xfer; 1438 uint32_t tmp; 1439 int i, error; 1440 1441 for (i = 0; i < length; i++, offset += sizeof(uint32_t)) { 1442 xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff, 1443 0xf0000000 | offset, &tmp, fw_xferwake); 1444 if (xfer == NULL) 1445 return (-1); 1446 fw_xferwait(xfer); 1447 1448 if (xfer->resp == 0) 1449 quad[i] = ntohl(tmp); 1450 1451 error = xfer->resp; 1452 fw_xfer_free(xfer); 1453 if (error) 1454 return (error); 1455 } 1456 return (0); 1457} 1458 1459 1460static int 1461fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur) 1462{ 1463 int err, i, off; 1464 struct csrdirectory *dir; 1465 struct csrreg *reg; 1466 1467 dir = (struct csrdirectory *)&fwdev->csrrom[offset / sizeof(uint32_t)]; 1468 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1469 (uint32_t *)dir, 1); 1470 if (err) 1471 return (-1); 1472 1473 offset += sizeof(uint32_t); 1474 reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)]; 1475 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, 1476 (uint32_t *)reg, dir->crc_len); 1477 if (err) 1478 return (-1); 1479 1480 /* XXX check CRC */ 1481 1482 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1); 1483 if (fwdev->rommax < off) 1484 fwdev->rommax = off; 1485 1486 if (recur == 0) 1487 return (0); 1488 1489 for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) { 1490 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D) 1491 recur = 1; 1492 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L) 1493 recur = 0; 1494 else 1495 continue; 1496 1497 off = offset + reg[i].val * sizeof(uint32_t); 1498 if (off > CROMSIZE) { 1499 printf("%s: invalid offset %d\n", __FUNCTION__, off); 1500 return (-1); 1501 } 1502 err = fw_explore_csrblock(fwdev, off, recur); 1503 if (err) 1504 return (-1); 1505 } 1506 return (0); 1507} 1508 1509static int 1510fw_explore_node(struct fw_device *dfwdev) 1511{ 1512 struct firewire_comm *fc; 1513 struct fw_device *fwdev, *pfwdev, *tfwdev; 1514 uint32_t *csr; 1515 struct csrhdr *hdr; 1516 struct bus_info *binfo; 1517 int err, node; 1518 uint32_t speed_test = 0; 1519 1520 fc = dfwdev->fc; 1521 csr = dfwdev->csrrom; 1522 node = dfwdev->dst; 1523 1524 /* First quad */ 1525 err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1); 1526 if (err) { 1527 dfwdev->status = FWDEVINVAL; 1528 return (-1); 1529 } 1530 hdr = (struct csrhdr *)&csr[0]; 1531 if (hdr->info_len != 4) { 1532 if (firewire_debug) 1533 device_printf(fc->bdev, 1534 "%s: node%d: wrong bus info len(%d)\n", 1535 __func__, node, hdr->info_len); 1536 dfwdev->status = FWDEVINVAL; 1537 return (-1); 1538 } 1539 1540 /* bus info */ 1541 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); 1542 if (err) { 1543 dfwdev->status = FWDEVINVAL; 1544 return (-1); 1545 } 1546 binfo = (struct bus_info *)&csr[1]; 1547 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { 1548 dfwdev->status = FWDEVINVAL; 1549 return (-1); 1550 } 1551 1552 if (firewire_debug) 1553 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n" 1554 "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) " 1555 "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) " 1556 "generation(%d) link_spd(%d)\n", 1557 __func__, node, 1558 binfo->irmc, binfo->cmc, binfo->isc, 1559 binfo->bmc, binfo->pmc, binfo->cyc_clk_acc, 1560 binfo->max_rec, binfo->max_rom, 1561 binfo->generation, binfo->link_spd); 1562 1563 STAILQ_FOREACH(fwdev, &fc->devices, link) 1564 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) 1565 break; 1566 if (fwdev == NULL) { 1567 /* new device */ 1568 fwdev = malloc(sizeof(struct fw_device), M_FW, 1569 M_NOWAIT | M_ZERO); 1570 if (fwdev == NULL) { 1571 device_printf(fc->bdev, "%s: node%d: no memory\n", 1572 __func__, node); 1573 return (-1); 1574 } 1575 fwdev->fc = fc; 1576 fwdev->eui = binfo->eui64; 1577 fwdev->dst = dfwdev->dst; 1578 fwdev->maxrec = dfwdev->maxrec; 1579 fwdev->status = dfwdev->status; 1580 1581 /* 1582 * Pre-1394a-2000 didn't have link_spd in 1583 * the Bus Info block, so try and use the 1584 * speed map value. 1585 * 1394a-2000 compliant devices only use 1586 * the Bus Info Block link spd value, so 1587 * ignore the speed map alltogether. SWB 1588 */ 1589 if (binfo->link_spd == FWSPD_S100 /* 0 */) { 1590 device_printf(fc->bdev, "%s: " 1591 "Pre 1394a-2000 detected\n", __func__); 1592 fwdev->speed = fc->speed_map->speed[fc->nodeid][node]; 1593 } else 1594 fwdev->speed = binfo->link_spd; 1595 /* 1596 * Test this speed with a read to the CSRROM. 1597 * If it fails, slow down the speed and retry. 1598 */ 1599 while (fwdev->speed > FWSPD_S100 /* 0 */) { 1600 err = fw_explore_read_quads(fwdev, CSRROMOFF, 1601 &speed_test, 1); 1602 if (err) { 1603 device_printf(fc->bdev, 1604 "%s: fwdev->speed(%s) decremented due to negotiation\n", 1605 __func__, linkspeed[fwdev->speed]); 1606 fwdev->speed--; 1607 } else 1608 break; 1609 1610 } 1611 1612 /* 1613 * If the fwdev is not found in the 1614 * fc->devices TAILQ, then we will add it. 1615 */ 1616 pfwdev = NULL; 1617 STAILQ_FOREACH(tfwdev, &fc->devices, link) { 1618 if (tfwdev->eui.hi > fwdev->eui.hi || 1619 (tfwdev->eui.hi == fwdev->eui.hi && 1620 tfwdev->eui.lo > fwdev->eui.lo)) 1621 break; 1622 pfwdev = tfwdev; 1623 } 1624 if (pfwdev == NULL) 1625 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link); 1626 else 1627 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link); 1628 } else { 1629 fwdev->dst = node; 1630 fwdev->status = FWDEVINIT; 1631 /* unchanged ? */ 1632 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) { 1633 if (firewire_debug) 1634 device_printf(fc->dev, 1635 "node%d: crom unchanged\n", node); 1636 return (0); 1637 } 1638 } 1639 1640 bzero(&fwdev->csrrom[0], CROMSIZE); 1641 1642 /* copy first quad and bus info block */ 1643 bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5); 1644 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; 1645 1646 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ 1647 1648 if (err) { 1649 if (firewire_debug) 1650 device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n", 1651 __func__, err); 1652 fwdev->status = FWDEVINVAL; 1653 fwdev->csrrom[0] = 0; 1654 } 1655 return (err); 1656 1657} 1658 1659/* 1660 * Find the self_id packet for a node, ignoring sequels. 1661 */ 1662static union fw_self_id * 1663fw_find_self_id(struct firewire_comm *fc, int node) 1664{ 1665 uint32_t i; 1666 union fw_self_id *s; 1667 1668 for (i = 0; i < fc->topology_map->self_id_count; i++) { 1669 s = &fc->topology_map->self_id[i]; 1670 if (s->p0.sequel) 1671 continue; 1672 if (s->p0.phy_id == node) 1673 return s; 1674 } 1675 return 0; 1676} 1677 1678static void 1679fw_explore(struct firewire_comm *fc) 1680{ 1681 int node, err, s, i, todo, todo2, trys; 1682 char nodes[63]; 1683 struct fw_device dfwdev; 1684 union fw_self_id *fwsid; 1685 1686 todo = 0; 1687 /* setup dummy fwdev */ 1688 dfwdev.fc = fc; 1689 dfwdev.speed = 0; 1690 dfwdev.maxrec = 8; /* 512 */ 1691 dfwdev.status = FWDEVINIT; 1692 1693 for (node = 0; node <= fc->max_node; node++) { 1694 /* We don't probe myself and linkdown nodes */ 1695 if (node == fc->nodeid) { 1696 if (firewire_debug) 1697 device_printf(fc->bdev, "%s:" 1698 "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n", 1699 __func__, node, fc->nodeid, fc->max_node); 1700 continue; 1701 } else if (firewire_debug) { 1702 device_printf(fc->bdev, "%s:" 1703 "node(%d) fc->max_node(%d) found\n", 1704 __func__, node, fc->max_node); 1705 } 1706 fwsid = fw_find_self_id(fc, node); 1707 if (!fwsid || !fwsid->p0.link_active) { 1708 if (firewire_debug) 1709 device_printf(fc->bdev, 1710 "%s: node%d: link down\n", 1711 __func__, node); 1712 continue; 1713 } 1714 nodes[todo++] = node; 1715 } 1716 1717 s = splfw(); 1718 for (trys = 0; todo > 0 && trys < 3; trys++) { 1719 todo2 = 0; 1720 for (i = 0; i < todo; i++) { 1721 dfwdev.dst = nodes[i]; 1722 err = fw_explore_node(&dfwdev); 1723 if (err) 1724 nodes[todo2++] = nodes[i]; 1725 if (firewire_debug) 1726 device_printf(fc->bdev, 1727 "%s: node %d, err = %d\n", 1728 __func__, node, err); 1729 } 1730 todo = todo2; 1731 } 1732 splx(s); 1733} 1734 1735static void 1736fw_bus_probe_thread(void *arg) 1737{ 1738 struct firewire_comm *fc; 1739 1740 fc = arg; 1741 1742 mtx_lock(&fc->wait_lock); 1743 while (fc->status != FWBUSDETACH) { 1744 if (fc->status == FWBUSEXPLORE) { 1745 mtx_unlock(&fc->wait_lock); 1746 fw_explore(fc); 1747 fc->status = FWBUSEXPDONE; 1748 if (firewire_debug) 1749 printf("bus_explore done\n"); 1750 fw_attach_dev(fc); 1751 mtx_lock(&fc->wait_lock); 1752 } 1753 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0); 1754 } 1755 mtx_unlock(&fc->wait_lock); 1756 kproc_exit(0); 1757} 1758 1759/* 1760 * To attach sub-devices layer onto IEEE1394 bus. 1761 */ 1762static void 1763fw_attach_dev(struct firewire_comm *fc) 1764{ 1765 struct fw_device *fwdev, *next; 1766 int i, err; 1767 device_t *devlistp; 1768 int devcnt; 1769 struct firewire_dev_comm *fdc; 1770 1771 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { 1772 next = STAILQ_NEXT(fwdev, link); 1773 if (fwdev->status == FWDEVINIT) { 1774 fwdev->status = FWDEVATTACHED; 1775 } else if (fwdev->status == FWDEVINVAL) { 1776 fwdev->rcnt++; 1777 if (firewire_debug) 1778 device_printf(fc->bdev, "%s:" 1779 "fwdev->rcnt(%d), hold_count(%d)\n", 1780 __func__, fwdev->rcnt, hold_count); 1781 if (fwdev->rcnt > hold_count) { 1782 /* 1783 * Remove devices which have not been seen 1784 * for a while. 1785 */ 1786 STAILQ_REMOVE(&fc->devices, fwdev, fw_device, 1787 link); 1788 free(fwdev, M_FW); 1789 } 1790 } 1791 } 1792 1793 err = device_get_children(fc->bdev, &devlistp, &devcnt); 1794 if (err == 0) { 1795 for (i = 0; i < devcnt; i++) { 1796 if (device_get_state(devlistp[i]) >= DS_ATTACHED) { 1797 fdc = device_get_softc(devlistp[i]); 1798 if (fdc->post_explore != NULL) 1799 fdc->post_explore(fdc); 1800 } 1801 } 1802 free(devlistp, M_TEMP); 1803 } 1804 1805 return; 1806} 1807 1808/* 1809 * To allocate unique transaction label. 1810 */ 1811static int 1812fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer) 1813{ 1814 u_int dst, new_tlabel; 1815 struct fw_xfer *txfer; 1816 int s; 1817 1818 dst = xfer->send.hdr.mode.hdr.dst & 0x3f; 1819 s = splfw(); 1820 mtx_lock(&fc->tlabel_lock); 1821 new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f; 1822 STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel) 1823 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst) 1824 break; 1825 if (txfer == NULL) { 1826 fc->last_tlabel[dst] = new_tlabel; 1827 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel); 1828 mtx_unlock(&fc->tlabel_lock); 1829 splx(s); 1830 xfer->tl = new_tlabel; 1831 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2; 1832 if (firewire_debug > 1) 1833 printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel); 1834 return (new_tlabel); 1835 } 1836 mtx_unlock(&fc->tlabel_lock); 1837 splx(s); 1838 1839 if (firewire_debug > 1) 1840 printf("fw_get_tlabel: no free tlabel\n"); 1841 return (-1); 1842} 1843 1844static void 1845fw_rcv_copy(struct fw_rcv_buf *rb) 1846{ 1847 struct fw_pkt *pkt; 1848 u_char *p; 1849 struct tcode_info *tinfo; 1850 u_int res, i, len, plen; 1851 1852 rb->xfer->recv.spd = rb->spd; 1853 1854 pkt = (struct fw_pkt *)rb->vec->iov_base; 1855 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode]; 1856 1857 /* Copy header */ 1858 p = (u_char *)&rb->xfer->recv.hdr; 1859 bcopy(rb->vec->iov_base, p, tinfo->hdr_len); 1860 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len; 1861 rb->vec->iov_len -= tinfo->hdr_len; 1862 1863 /* Copy payload */ 1864 p = (u_char *)rb->xfer->recv.payload; 1865 res = rb->xfer->recv.pay_len; 1866 1867 /* special handling for RRESQ */ 1868 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ && 1869 p != NULL && res >= sizeof(uint32_t)) { 1870 *(uint32_t *)p = pkt->mode.rresq.data; 1871 rb->xfer->recv.pay_len = sizeof(uint32_t); 1872 return; 1873 } 1874 1875 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0) 1876 return; 1877 1878 plen = pkt->mode.rresb.len; 1879 1880 for (i = 0; i < rb->nvec; i++, rb->vec++) { 1881 len = MIN(rb->vec->iov_len, plen); 1882 if (res < len) { 1883 device_printf(rb->fc->bdev, "%s:" 1884 " rcv buffer(%d) is %d bytes short.\n", 1885 __func__, rb->xfer->recv.pay_len, len - res); 1886 len = res; 1887 } 1888 bcopy(rb->vec->iov_base, p, len); 1889 p += len; 1890 res -= len; 1891 plen -= len; 1892 if (res == 0 || plen == 0) 1893 break; 1894 } 1895 rb->xfer->recv.pay_len -= res; 1896} 1897 1898/* 1899 * Generic packet receiving process. 1900 */ 1901void 1902fw_rcv(struct fw_rcv_buf *rb) 1903{ 1904 struct fw_pkt *fp, *resfp; 1905 struct fw_bind *bind; 1906 int tcode; 1907 int i, len, oldstate; 1908#if 0 1909 { 1910 uint32_t *qld; 1911 int i; 1912 qld = (uint32_t *)buf; 1913 printf("spd %d len:%d\n", spd, len); 1914 for (i = 0; i <= len && i < 32; i+= 4) { 1915 printf("0x%08x ", ntohl(qld[i/4])); 1916 if ((i % 16) == 15) printf("\n"); 1917 } 1918 if ((i % 16) != 15) printf("\n"); 1919 } 1920#endif 1921 fp = (struct fw_pkt *)rb->vec[0].iov_base; 1922 tcode = fp->mode.common.tcode; 1923 switch (tcode) { 1924 case FWTCODE_WRES: 1925 case FWTCODE_RRESQ: 1926 case FWTCODE_RRESB: 1927 case FWTCODE_LRES: 1928 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1929 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode); 1930 if (rb->xfer == NULL) { 1931 device_printf(rb->fc->bdev, "%s: unknown response " 1932 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n", 1933 __func__, 1934 tcode_str[tcode], tcode, 1935 fp->mode.hdr.src, 1936 fp->mode.hdr.tlrt >> 2, 1937 fp->mode.hdr.tlrt & 3, 1938 fp->mode.rresq.data); 1939#if 0 1940 printf("try ad-hoc work around!!\n"); 1941 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1942 (fp->mode.hdr.tlrt >> 2)^3); 1943 if (rb->xfer == NULL) { 1944 printf("no use...\n"); 1945 return; 1946 } 1947#else 1948 return; 1949#endif 1950 } 1951 fw_rcv_copy(rb); 1952 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP) 1953 rb->xfer->resp = EIO; 1954 else 1955 rb->xfer->resp = 0; 1956 /* make sure the packet is drained in AT queue */ 1957 oldstate = rb->xfer->flag; 1958 rb->xfer->flag = FWXF_RCVD; 1959 switch (oldstate) { 1960 case FWXF_SENT: 1961 fw_xfer_done(rb->xfer); 1962 break; 1963 case FWXF_START: 1964#if 0 1965 if (firewire_debug) 1966 printf("not sent yet tl=%x\n", rb->xfer->tl); 1967#endif 1968 break; 1969 default: 1970 device_printf(rb->fc->bdev, "%s: " 1971 "unexpected flag 0x%02x\n", __func__, 1972 rb->xfer->flag); 1973 } 1974 return; 1975 case FWTCODE_WREQQ: 1976 case FWTCODE_WREQB: 1977 case FWTCODE_RREQQ: 1978 case FWTCODE_RREQB: 1979 case FWTCODE_LREQ: 1980 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi, 1981 fp->mode.rreqq.dest_lo); 1982 if (bind == NULL) { 1983 device_printf(rb->fc->bdev, "%s: " 1984 "Unknown service addr 0x%04x:0x%08x %s(%x)" 1985 " src=0x%x data=%x\n", 1986 __func__, 1987 fp->mode.wreqq.dest_hi, 1988 fp->mode.wreqq.dest_lo, 1989 tcode_str[tcode], tcode, 1990 fp->mode.hdr.src, 1991 ntohl(fp->mode.wreqq.data)); 1992 1993 if (rb->fc->status == FWBUSINIT) { 1994 device_printf(rb->fc->bdev, 1995 "%s: cannot respond(bus reset)!\n", 1996 __func__); 1997 return; 1998 } 1999 rb->xfer = fw_xfer_alloc(M_FWXFER); 2000 if (rb->xfer == NULL) { 2001 return; 2002 } 2003 rb->xfer->send.spd = rb->spd; 2004 rb->xfer->send.pay_len = 0; 2005 resfp = &rb->xfer->send.hdr; 2006 switch (tcode) { 2007 case FWTCODE_WREQQ: 2008 case FWTCODE_WREQB: 2009 resfp->mode.hdr.tcode = FWTCODE_WRES; 2010 break; 2011 case FWTCODE_RREQQ: 2012 resfp->mode.hdr.tcode = FWTCODE_RRESQ; 2013 break; 2014 case FWTCODE_RREQB: 2015 resfp->mode.hdr.tcode = FWTCODE_RRESB; 2016 break; 2017 case FWTCODE_LREQ: 2018 resfp->mode.hdr.tcode = FWTCODE_LRES; 2019 break; 2020 } 2021 resfp->mode.hdr.dst = fp->mode.hdr.src; 2022 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt; 2023 resfp->mode.hdr.pri = fp->mode.hdr.pri; 2024 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR; 2025 resfp->mode.rresb.extcode = 0; 2026 resfp->mode.rresb.len = 0; 2027/* 2028 rb->xfer->hand = fw_xferwake; 2029*/ 2030 rb->xfer->hand = fw_xfer_free; 2031 if (fw_asyreq(rb->fc, -1, rb->xfer)) 2032 fw_xfer_free(rb->xfer); 2033 return; 2034 } 2035 len = 0; 2036 for (i = 0; i < rb->nvec; i++) 2037 len += rb->vec[i].iov_len; 2038 rb->xfer = STAILQ_FIRST(&bind->xferlist); 2039 if (rb->xfer == NULL) { 2040 device_printf(rb->fc->bdev, "%s: " 2041 "Discard a packet for this bind.\n", __func__); 2042 return; 2043 } 2044 STAILQ_REMOVE_HEAD(&bind->xferlist, link); 2045 fw_rcv_copy(rb); 2046 rb->xfer->hand(rb->xfer); 2047 return; 2048#if 0 /* shouldn't happen ?? or for GASP */ 2049 case FWTCODE_STREAM: 2050 { 2051 struct fw_xferq *xferq; 2052 2053 xferq = rb->fc->ir[sub]; 2054#if 0 2055 printf("stream rcv dma %d len %d off %d spd %d\n", 2056 sub, len, off, spd); 2057#endif 2058 if (xferq->queued >= xferq->maxq) { 2059 printf("receive queue is full\n"); 2060 return; 2061 } 2062 /* XXX get xfer from xfer queue, we don't need copy for 2063 per packet mode */ 2064 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */ 2065 vec[0].iov_len); 2066 if (rb->xfer == NULL) 2067 return; 2068 fw_rcv_copy(rb) 2069 s = splfw(); 2070 xferq->queued++; 2071 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link); 2072 splx(s); 2073 sc = device_get_softc(rb->fc->bdev); 2074 if (SEL_WAITING(&xferq->rsel)) 2075 selwakeuppri(&xferq->rsel, FWPRI); 2076 if (xferq->flag & FWXFERQ_WAKEUP) { 2077 xferq->flag &= ~FWXFERQ_WAKEUP; 2078 wakeup((caddr_t)xferq); 2079 } 2080 if (xferq->flag & FWXFERQ_HANDLER) { 2081 xferq->hand(xferq); 2082 } 2083 return; 2084 break; 2085 } 2086#endif 2087 default: 2088 device_printf(rb->fc->bdev,"%s: unknown tcode %d\n", 2089 __func__, tcode); 2090 break; 2091 } 2092} 2093 2094/* 2095 * Post process for Bus Manager election process. 2096 */ 2097static void 2098fw_try_bmr_callback(struct fw_xfer *xfer) 2099{ 2100 struct firewire_comm *fc; 2101 int bmr; 2102 2103 if (xfer == NULL) 2104 return; 2105 fc = xfer->fc; 2106 if (xfer->resp != 0) 2107 goto error; 2108 if (xfer->recv.payload == NULL) 2109 goto error; 2110 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE) 2111 goto error; 2112 2113 bmr = ntohl(xfer->recv.payload[0]); 2114 if (bmr == 0x3f) 2115 bmr = fc->nodeid; 2116 2117 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f); 2118 fw_xfer_free_buf(xfer); 2119 fw_bmr(fc); 2120 return; 2121 2122error: 2123 device_printf(fc->bdev, "bus manager election failed\n"); 2124 fw_xfer_free_buf(xfer); 2125} 2126 2127 2128/* 2129 * To candidate Bus Manager election process. 2130 */ 2131static void 2132fw_try_bmr(void *arg) 2133{ 2134 struct fw_xfer *xfer; 2135 struct firewire_comm *fc = arg; 2136 struct fw_pkt *fp; 2137 int err = 0; 2138 2139 xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4); 2140 if (xfer == NULL) 2141 return; 2142 xfer->send.spd = 0; 2143 fc->status = FWBUSMGRELECT; 2144 2145 fp = &xfer->send.hdr; 2146 fp->mode.lreq.dest_hi = 0xffff; 2147 fp->mode.lreq.tlrt = 0; 2148 fp->mode.lreq.tcode = FWTCODE_LREQ; 2149 fp->mode.lreq.pri = 0; 2150 fp->mode.lreq.src = 0; 2151 fp->mode.lreq.len = 8; 2152 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP; 2153 fp->mode.lreq.dst = FWLOCALBUS | fc->irm; 2154 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID; 2155 xfer->send.payload[0] = htonl(0x3f); 2156 xfer->send.payload[1] = htonl(fc->nodeid); 2157 xfer->hand = fw_try_bmr_callback; 2158 2159 err = fw_asyreq(fc, -1, xfer); 2160 if (err) { 2161 fw_xfer_free_buf(xfer); 2162 return; 2163 } 2164 return; 2165} 2166 2167#ifdef FW_VMACCESS 2168/* 2169 * Software implementation for physical memory block access. 2170 * XXX:Too slow, useful for debug purpose only. 2171 */ 2172static void 2173fw_vmaccess(struct fw_xfer *xfer) 2174{ 2175 struct fw_pkt *rfp, *sfp = NULL; 2176 uint32_t *ld = (uint32_t *)xfer->recv.buf; 2177 2178 printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n", 2179 xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), 2180 ntohl(ld[3])); 2181 printf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]), 2182 ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7])); 2183 if (xfer->resp != 0) { 2184 fw_xfer_free(xfer); 2185 return; 2186 } 2187 if (xfer->recv.buf == NULL) { 2188 fw_xfer_free(xfer); 2189 return; 2190 } 2191 rfp = (struct fw_pkt *)xfer->recv.buf; 2192 switch (rfp->mode.hdr.tcode) { 2193 /* XXX need fix for 64bit arch */ 2194 case FWTCODE_WREQB: 2195 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2196 xfer->send.len = 12; 2197 sfp = (struct fw_pkt *)xfer->send.buf; 2198 bcopy(rfp->mode.wreqb.payload, 2199 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo),s 2200 ntohs(rfp->mode.wreqb.len)); 2201 sfp->mode.wres.tcode = FWTCODE_WRES; 2202 sfp->mode.wres.rtcode = 0; 2203 break; 2204 case FWTCODE_WREQQ: 2205 xfer->send.buf = malloc(12, M_FW, M_NOWAIT); 2206 xfer->send.len = 12; 2207 sfp->mode.wres.tcode = FWTCODE_WRES; 2208 *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = 2209 rfp->mode.wreqq.data; 2210 sfp->mode.wres.rtcode = 0; 2211 break; 2212 case FWTCODE_RREQB: 2213 xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, 2214 M_FW, M_NOWAIT); 2215 xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len); 2216 sfp = (struct fw_pkt *)xfer->send.buf; 2217 bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo), 2218 sfp->mode.rresb.payload, 2219 ntohs(rfp->mode.rreqb.len)); 2220 sfp->mode.rresb.tcode = FWTCODE_RRESB; 2221 sfp->mode.rresb.len = rfp->mode.rreqb.len; 2222 sfp->mode.rresb.rtcode = 0; 2223 sfp->mode.rresb.extcode = 0; 2224 break; 2225 case FWTCODE_RREQQ: 2226 xfer->send.buf = malloc(16, M_FW, M_NOWAIT); 2227 xfer->send.len = 16; 2228 sfp = (struct fw_pkt *)xfer->send.buf; 2229 sfp->mode.rresq.data = 2230 *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo)); 2231 sfp->mode.wres.tcode = FWTCODE_RRESQ; 2232 sfp->mode.rresb.rtcode = 0; 2233 break; 2234 default: 2235 fw_xfer_free(xfer); 2236 return; 2237 } 2238 sfp->mode.hdr.dst = rfp->mode.hdr.src; 2239 xfer->dst = ntohs(rfp->mode.hdr.src); 2240 xfer->hand = fw_xfer_free; 2241 2242 sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt; 2243 sfp->mode.hdr.pri = 0; 2244 2245 fw_asyreq(xfer->fc, -1, xfer); 2246/**/ 2247 return; 2248} 2249#endif 2250 2251/* 2252 * CRC16 check-sum for IEEE1394 register blocks. 2253 */ 2254uint16_t 2255fw_crc16(uint32_t *ptr, uint32_t len) 2256{ 2257 uint32_t i, sum, crc = 0; 2258 int shift; 2259 len = (len + 3) & ~3; 2260 for (i = 0; i < len; i += 4) { 2261 for (shift = 28; shift >= 0; shift -= 4) { 2262 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf; 2263 crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum; 2264 } 2265 crc &= 0xffff; 2266 } 2267 return ((uint16_t) crc); 2268} 2269 2270/* 2271 * Find the root node, if it is not 2272 * Cycle Master Capable, then we should 2273 * override this and become the Cycle 2274 * Master 2275 */ 2276static int 2277fw_bmr(struct firewire_comm *fc) 2278{ 2279 struct fw_device fwdev; 2280 union fw_self_id *self_id; 2281 int cmstr; 2282 uint32_t quad; 2283 2284 /* Check to see if the current root node is cycle master capable */ 2285 self_id = fw_find_self_id(fc, fc->max_node); 2286 if (fc->max_node > 0) { 2287 /* XXX check cmc bit of businfo block rather than contender */ 2288 if (self_id->p0.link_active && self_id->p0.contender) 2289 cmstr = fc->max_node; 2290 else { 2291 device_printf(fc->bdev, 2292 "root node is not cycle master capable\n"); 2293 /* XXX shall we be the cycle master? */ 2294 cmstr = fc->nodeid; 2295 /* XXX need bus reset */ 2296 } 2297 } else 2298 cmstr = -1; 2299 2300 device_printf(fc->bdev, "bus manager %d %s\n", 2301 CSRARC(fc, BUS_MGR_ID), 2302 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : ""); 2303 if (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) { 2304 /* We are not the bus manager */ 2305 return (0); 2306 } 2307 2308 /* Optimize gapcount */ 2309 if (fc->max_hop <= MAX_GAPHOP) 2310 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]); 2311 /* If we are the cycle master, nothing to do */ 2312 if (cmstr == fc->nodeid || cmstr == -1) 2313 return 0; 2314 /* Bus probe has not finished, make dummy fwdev for cmstr */ 2315 bzero(&fwdev, sizeof(fwdev)); 2316 fwdev.fc = fc; 2317 fwdev.dst = cmstr; 2318 fwdev.speed = 0; 2319 fwdev.maxrec = 8; /* 512 */ 2320 fwdev.status = FWDEVINIT; 2321 /* Set cmstr bit on the cycle master */ 2322 quad = htonl(1 << 8); 2323 fwmem_write_quad(&fwdev, NULL, 0/*spd*/, 2324 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free); 2325 2326 return 0; 2327} 2328 2329int 2330fw_open_isodma(struct firewire_comm *fc, int tx) 2331{ 2332 struct fw_xferq **xferqa; 2333 struct fw_xferq *xferq; 2334 int i; 2335 2336 if (tx) 2337 xferqa = &fc->it[0]; 2338 else 2339 xferqa = &fc->ir[0]; 2340 2341 FW_GLOCK(fc); 2342 for (i = 0; i < fc->nisodma; i++) { 2343 xferq = xferqa[i]; 2344 if ((xferq->flag & FWXFERQ_OPEN) == 0) { 2345 xferq->flag |= FWXFERQ_OPEN; 2346 break; 2347 } 2348 } 2349 if (i == fc->nisodma) { 2350 printf("no free dma channel (tx=%d)\n", tx); 2351 i = -1; 2352 } 2353 FW_GUNLOCK(fc); 2354 return (i); 2355} 2356 2357static int 2358fw_modevent(module_t mode, int type, void *data) 2359{ 2360 int err = 0; 2361 static eventhandler_tag fwdev_ehtag = NULL; 2362 2363 switch (type) { 2364 case MOD_LOAD: 2365 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone, 2366 fwdev_clone, 0, 1000); 2367 break; 2368 case MOD_UNLOAD: 2369 if (fwdev_ehtag != NULL) 2370 EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag); 2371 break; 2372 case MOD_SHUTDOWN: 2373 break; 2374 default: 2375 return (EOPNOTSUPP); 2376 } 2377 return (err); 2378} 2379 2380 2381DRIVER_MODULE(firewire, fwohci, firewire_driver, firewire_devclass, 2382 fw_modevent,0); 2383MODULE_VERSION(firewire, 1); 2384