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sys/dev/ieee1394/firewire.c
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1 /* $NetBSD: firewire.c,v 1.55 2022/05/22 11:27:35 andvar Exp $ */ 2 /*- 3 * Copyright (c) 2003 Hidetoshi Shimokawa 4 * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the acknowledgement as bellow: 17 * 18 * This product includes software developed by K. Kobayashi and H. Shimokawa 19 * 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 25 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 26 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 32 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 * 35 * $FreeBSD: src/sys/dev/firewire/firewire.c,v 1.110 2009/04/07 02:33:46 sbruno Exp $ 36 * 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: firewire.c,v 1.55 2022/05/22 11:27:35 andvar Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/bus.h> 44 #include <sys/callout.h> 45 #include <sys/condvar.h> 46 #include <sys/conf.h> 47 #include <sys/device.h> 48 #include <sys/errno.h> 49 #include <sys/kernel.h> 50 #include <sys/kthread.h> 51 #include <sys/malloc.h> 52 #include <sys/queue.h> 53 #include <sys/sysctl.h> 54 #include <sys/systm.h> 55 56 #include <dev/ieee1394/firewire.h> 57 #include <dev/ieee1394/firewirereg.h> 58 #include <dev/ieee1394/fwmem.h> 59 #include <dev/ieee1394/iec13213.h> 60 #include <dev/ieee1394/iec68113.h> 61 62 #include "locators.h" 63 64 struct crom_src_buf { 65 struct crom_src src; 66 struct crom_chunk root; 67 struct crom_chunk vendor; 68 struct crom_chunk hw; 69 }; 70 71 int firewire_debug = 0, try_bmr = 1, hold_count = 0; 72 /* 73 * Setup sysctl(3) MIB, hw.ieee1394if.* 74 * 75 * TBD condition CTLFLAG_PERMANENT on being a module or not 76 */ 77 SYSCTL_SETUP(sysctl_ieee1394if, "sysctl ieee1394if(4) subtree setup") 78 { 79 int rc, ieee1394if_node_num; 80 const struct sysctlnode *node; 81 82 if ((rc = sysctl_createv(clog, 0, NULL, &node, 83 CTLFLAG_PERMANENT, CTLTYPE_NODE, "ieee1394if", 84 SYSCTL_DESCR("ieee1394if controls"), 85 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) { 86 goto err; 87 } 88 ieee1394if_node_num = node->sysctl_num; 89 90 /* ieee1394if try bus manager flag */ 91 if ((rc = sysctl_createv(clog, 0, NULL, &node, 92 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 93 "try_bmr", SYSCTL_DESCR("Try to be a bus manager"), 94 NULL, 0, &try_bmr, 95 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) { 96 goto err; 97 } 98 99 /* ieee1394if hold count */ 100 if ((rc = sysctl_createv(clog, 0, NULL, &node, 101 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 102 "hold_count", SYSCTL_DESCR("Number of count of " 103 "bus resets for removing lost device information"), 104 NULL, 0, &hold_count, 105 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) { 106 goto err; 107 } 108 109 /* ieee1394if driver debug flag */ 110 if ((rc = sysctl_createv(clog, 0, NULL, &node, 111 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 112 "ieee1394_debug", SYSCTL_DESCR("ieee1394if driver debug flag"), 113 NULL, 0, &firewire_debug, 114 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) { 115 goto err; 116 } 117 118 return; 119 120 err: 121 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 122 } 123 124 MALLOC_DEFINE(M_FW, "ieee1394", "IEEE1394"); 125 126 #define FW_MAXASYRTY 4 127 128 #define FW_GENERATION_CHANGEABLE 2 129 130 static int firewirematch (device_t, cfdata_t, void *); 131 static void firewireattach (device_t, device_t, void *); 132 static int firewiredetach (device_t, int); 133 static int firewire_print (void *, const char *); 134 135 int firewire_resume (struct firewire_comm *); 136 137 static void fw_asystart(struct fw_xfer *); 138 static void firewire_xfer_timeout(struct firewire_comm *); 139 static void firewire_watchdog(void *); 140 static void fw_xferq_drain(struct fw_xferq *); 141 static void fw_reset_csr(struct firewire_comm *); 142 static void fw_init_crom(struct firewire_comm *); 143 static void fw_reset_crom(struct firewire_comm *); 144 static void fw_dump_hdr(struct fw_pkt *, const char *); 145 static void fw_tl_free(struct firewire_comm *, struct fw_xfer *); 146 static struct fw_xfer *fw_tl2xfer(struct firewire_comm *, int, int, int); 147 static void fw_phy_config(struct firewire_comm *, int, int); 148 static void fw_print_sid(uint32_t); 149 static void fw_bus_probe(struct firewire_comm *); 150 static int fw_explore_read_quads(struct fw_device *, int, uint32_t *, int); 151 static int fw_explore_csrblock(struct fw_device *, int, int); 152 static int fw_explore_node(struct fw_device *); 153 static union fw_self_id *fw_find_self_id(struct firewire_comm *, int); 154 static void fw_explore(struct firewire_comm *); 155 static void fw_bus_probe_thread(void *); 156 static void fw_attach_dev(struct firewire_comm *); 157 static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *); 158 static void fw_rcv_copy(struct fw_rcv_buf *); 159 static void fw_try_bmr_callback(struct fw_xfer *); 160 static void fw_try_bmr(void *); 161 static int fw_bmr(struct firewire_comm *); 162 163 164 CFATTACH_DECL_NEW(ieee1394if, sizeof(struct firewire_softc), 165 firewirematch, firewireattach, firewiredetach, NULL); 166 167 168 const char *fw_linkspeed[] = { 169 "S100", "S200", "S400", "S800", 170 "S1600", "S3200", "undef", "undef" 171 }; 172 173 static const char *tcode_str[] = { 174 "WREQQ", "WREQB", "WRES", "undef", 175 "RREQQ", "RREQB", "RRESQ", "RRESB", 176 "CYCS", "LREQ", "STREAM", "LRES", 177 "undef", "undef", "PHY", "undef" 178 }; 179 180 /* IEEE-1394a Table C-2 Gap count as a function of hops*/ 181 #define MAX_GAPHOP 15 182 u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18, 183 21, 24, 26, 29, 32, 35, 37, 40}; 184 185 186 static int 187 firewirematch(device_t parent, cfdata_t cf, void *aux) 188 { 189 190 return 1; /* always match */ 191 } 192 193 static void 194 firewireattach(device_t parent, device_t self, void *aux) 195 { 196 struct firewire_softc *sc = device_private(self); 197 struct firewire_comm *fc = device_private(parent); 198 struct fw_attach_args faa; 199 struct firewire_dev_list *devlist; 200 201 aprint_naive("\n"); 202 aprint_normal(": IEEE1394 bus\n"); 203 204 fc->bdev = sc->dev = self; 205 sc->fc = fc; 206 SLIST_INIT(&sc->devlist); 207 208 fc->status = FWBUSNOTREADY; 209 210 if (fc->nisodma > FWMAXNDMA) 211 fc->nisodma = FWMAXNDMA; 212 213 fc->crom_src_buf = malloc(sizeof(struct crom_src_buf), 214 M_FW, M_WAITOK | M_ZERO); 215 fc->topology_map =malloc(sizeof(struct fw_topology_map), 216 M_FW, M_WAITOK | M_ZERO); 217 fc->speed_map = malloc(sizeof(struct fw_speed_map), 218 M_FW, M_WAITOK | M_ZERO); 219 220 mutex_init(&fc->tlabel_lock, MUTEX_DEFAULT, IPL_VM); 221 mutex_init(&fc->fc_mtx, MUTEX_DEFAULT, IPL_VM); 222 mutex_init(&fc->wait_lock, MUTEX_DEFAULT, IPL_VM); 223 cv_init(&fc->fc_cv, "ieee1394"); 224 225 callout_init(&fc->timeout_callout, CALLOUT_MPSAFE); 226 callout_setfunc(&fc->timeout_callout, firewire_watchdog, fc); 227 callout_init(&fc->bmr_callout, CALLOUT_MPSAFE); 228 callout_setfunc(&fc->bmr_callout, fw_try_bmr, fc); 229 callout_init(&fc->busprobe_callout, CALLOUT_MPSAFE); 230 callout_setfunc(&fc->busprobe_callout, (void *)fw_bus_probe, fc); 231 232 callout_schedule(&fc->timeout_callout, hz); 233 234 /* Tell config we will have started a thread to scan the bus. */ 235 config_pending_incr(self); 236 237 /* create thread */ 238 if (kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, fw_bus_probe_thread, 239 fc, &fc->probe_thread, "fw%dprobe", device_unit(fc->bdev))) { 240 aprint_error_dev(self, "kthread_create failed\n"); 241 config_pending_decr(self); 242 } 243 244 devlist = malloc(sizeof(struct firewire_dev_list), M_DEVBUF, M_WAITOK); 245 246 faa.name = "fwip"; 247 faa.fc = fc; 248 faa.fwdev = NULL; 249 devlist->dev = config_found(sc->dev, &faa, firewire_print, CFARGS_NONE); 250 if (devlist->dev == NULL) 251 free(devlist, M_DEVBUF); 252 else 253 SLIST_INSERT_HEAD(&sc->devlist, devlist, link); 254 255 /* bus_reset */ 256 fw_busreset(fc, FWBUSNOTREADY); 257 fc->ibr(fc); 258 259 if (!pmf_device_register(self, NULL, NULL)) 260 aprint_error_dev(self, "couldn't establish power handler\n"); 261 262 return; 263 } 264 265 static int 266 firewiredetach(device_t self, int flags) 267 { 268 struct firewire_softc *sc = device_private(self); 269 struct firewire_comm *fc; 270 struct fw_device *fwdev, *fwdev_next; 271 struct firewire_dev_list *devlist; 272 int err; 273 274 fc = sc->fc; 275 mutex_enter(&fc->wait_lock); 276 fc->status = FWBUSDETACH; 277 cv_signal(&fc->fc_cv); 278 while (fc->status != FWBUSDETACHOK) { 279 err = cv_timedwait_sig(&fc->fc_cv, &fc->wait_lock, hz * 60); 280 if (err == EWOULDBLOCK) { 281 aprint_error_dev(self, 282 "firewire probe thread didn't die\n"); 283 break; 284 } 285 } 286 mutex_exit(&fc->wait_lock); 287 288 289 while ((devlist = SLIST_FIRST(&sc->devlist)) != NULL) { 290 if ((err = config_detach(devlist->dev, flags)) != 0) 291 return err; 292 SLIST_REMOVE(&sc->devlist, devlist, firewire_dev_list, link); 293 free(devlist, M_DEVBUF); 294 } 295 296 callout_stop(&fc->timeout_callout); 297 callout_stop(&fc->bmr_callout); 298 callout_stop(&fc->busprobe_callout); 299 300 /* XXX xfer_free and untimeout on all xfers */ 301 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; 302 fwdev = fwdev_next) { 303 fwdev_next = STAILQ_NEXT(fwdev, link); 304 free(fwdev, M_FW); 305 } 306 free(fc->topology_map, M_FW); 307 free(fc->speed_map, M_FW); 308 free(fc->crom_src_buf, M_FW); 309 310 cv_destroy(&fc->fc_cv); 311 mutex_destroy(&fc->wait_lock); 312 mutex_destroy(&fc->fc_mtx); 313 mutex_destroy(&fc->tlabel_lock); 314 return 0; 315 } 316 317 static int 318 firewire_print(void *aux, const char *pnp) 319 { 320 struct fw_attach_args *fwa = (struct fw_attach_args *)aux; 321 322 if (pnp) 323 aprint_normal("%s at %s", fwa->name, pnp); 324 325 return UNCONF; 326 } 327 328 int 329 firewire_resume(struct firewire_comm *fc) 330 { 331 332 fc->status = FWBUSNOTREADY; 333 return 0; 334 } 335 336 337 /* 338 * Lookup fwdev by node id. 339 */ 340 struct fw_device * 341 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst) 342 { 343 struct fw_device *fwdev; 344 345 mutex_enter(&fc->fc_mtx); 346 STAILQ_FOREACH(fwdev, &fc->devices, link) 347 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL) 348 break; 349 mutex_exit(&fc->fc_mtx); 350 351 return fwdev; 352 } 353 354 /* 355 * Lookup fwdev by EUI64. 356 */ 357 struct fw_device * 358 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui) 359 { 360 struct fw_device *fwdev; 361 362 mutex_enter(&fc->fc_mtx); 363 STAILQ_FOREACH(fwdev, &fc->devices, link) 364 if (FW_EUI64_EQUAL(fwdev->eui, *eui)) 365 break; 366 mutex_exit(&fc->fc_mtx); 367 368 if (fwdev == NULL) 369 return NULL; 370 if (fwdev->status == FWDEVINVAL) 371 return NULL; 372 return fwdev; 373 } 374 375 /* 376 * Async. request procedure for userland application. 377 */ 378 int 379 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer) 380 { 381 struct fw_xferq *xferq; 382 int len; 383 struct fw_pkt *fp; 384 int tcode; 385 const struct tcode_info *info; 386 387 if (xfer == NULL) 388 return EINVAL; 389 if (xfer->hand == NULL) { 390 aprint_error_dev(fc->bdev, "hand == NULL\n"); 391 return EINVAL; 392 } 393 fp = &xfer->send.hdr; 394 395 tcode = fp->mode.common.tcode & 0xf; 396 info = &fc->tcode[tcode]; 397 if (info->flag == 0) { 398 aprint_error_dev(fc->bdev, "invalid tcode=%x\n", tcode); 399 return EINVAL; 400 } 401 402 /* XXX allow bus explore packets only after bus rest */ 403 if ((fc->status < FWBUSEXPLORE) && 404 ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) || 405 (fp->mode.rreqq.dest_lo < 0xf0000000) || 406 (fp->mode.rreqq.dest_lo >= 0xf0001000))) { 407 xfer->resp = EAGAIN; 408 xfer->flag = FWXF_BUSY; 409 return EAGAIN; 410 } 411 412 if (info->flag & FWTI_REQ) 413 xferq = fc->atq; 414 else 415 xferq = fc->ats; 416 len = info->hdr_len; 417 if (xfer->send.pay_len > MAXREC(fc->maxrec)) { 418 aprint_error_dev(fc->bdev, "send.pay_len > maxrec\n"); 419 return EINVAL; 420 } 421 if (info->flag & FWTI_BLOCK_STR) 422 len = fp->mode.stream.len; 423 else if (info->flag & FWTI_BLOCK_ASY) 424 len = fp->mode.rresb.len; 425 else 426 len = 0; 427 if (len != xfer->send.pay_len) { 428 aprint_error_dev(fc->bdev, 429 "len(%d) != send.pay_len(%d) %s(%x)\n", 430 len, xfer->send.pay_len, tcode_str[tcode], tcode); 431 return EINVAL; 432 } 433 434 if (xferq->start == NULL) { 435 aprint_error_dev(fc->bdev, "xferq->start == NULL\n"); 436 return EINVAL; 437 } 438 if (!(xferq->queued < xferq->maxq)) { 439 aprint_error_dev(fc->bdev, "Discard a packet (queued=%d)\n", 440 xferq->queued); 441 return EAGAIN; 442 } 443 444 xfer->tl = -1; 445 if (info->flag & FWTI_TLABEL) 446 if (fw_get_tlabel(fc, xfer) < 0) 447 return EAGAIN; 448 449 xfer->resp = 0; 450 xfer->fc = fc; 451 xfer->q = xferq; 452 453 fw_asystart(xfer); 454 return 0; 455 } 456 457 /* 458 * Wakeup blocked process. 459 */ 460 void 461 fw_xferwake(struct fw_xfer *xfer) 462 { 463 464 mutex_enter(&xfer->fc->wait_lock); 465 xfer->flag |= FWXF_WAKE; 466 cv_signal(&xfer->cv); 467 mutex_exit(&xfer->fc->wait_lock); 468 469 return; 470 } 471 472 int 473 fw_xferwait(struct fw_xfer *xfer) 474 { 475 struct firewire_comm *fc = xfer->fc; 476 int err = 0; 477 478 mutex_enter(&fc->wait_lock); 479 while (!(xfer->flag & FWXF_WAKE)) 480 err = cv_wait_sig(&xfer->cv, &fc->wait_lock); 481 mutex_exit(&fc->wait_lock); 482 483 return err; 484 } 485 486 void 487 fw_drain_txq(struct firewire_comm *fc) 488 { 489 struct fw_xfer *xfer; 490 STAILQ_HEAD(, fw_xfer) xfer_drain; 491 int i; 492 493 STAILQ_INIT(&xfer_drain); 494 495 mutex_enter(&fc->atq->q_mtx); 496 fw_xferq_drain(fc->atq); 497 mutex_exit(&fc->atq->q_mtx); 498 mutex_enter(&fc->ats->q_mtx); 499 fw_xferq_drain(fc->ats); 500 mutex_exit(&fc->ats->q_mtx); 501 for (i = 0; i < fc->nisodma; i++) 502 fw_xferq_drain(fc->it[i]); 503 504 mutex_enter(&fc->tlabel_lock); 505 for (i = 0; i < 0x40; i++) 506 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 507 if (firewire_debug) 508 printf("tl=%d flag=%d\n", i, xfer->flag); 509 xfer->resp = EAGAIN; 510 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 511 STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel); 512 } 513 mutex_exit(&fc->tlabel_lock); 514 515 STAILQ_FOREACH(xfer, &xfer_drain, tlabel) 516 xfer->hand(xfer); 517 } 518 519 /* 520 * Called after bus reset. 521 */ 522 void 523 fw_busreset(struct firewire_comm *fc, uint32_t new_status) 524 { 525 struct firewire_softc *sc = device_private(fc->bdev); 526 struct firewire_dev_list *devlist; 527 struct firewire_dev_comm *fdc; 528 struct crom_src *src; 529 uint32_t *newrom; 530 531 if (fc->status == FWBUSMGRELECT) 532 callout_stop(&fc->bmr_callout); 533 534 fc->status = new_status; 535 fw_reset_csr(fc); 536 537 if (fc->status == FWBUSNOTREADY) 538 fw_init_crom(fc); 539 540 fw_reset_crom(fc); 541 542 /* How many safe this access? */ 543 SLIST_FOREACH(devlist, &sc->devlist, link) { 544 fdc = device_private(devlist->dev); 545 if (fdc->post_busreset != NULL) 546 fdc->post_busreset(fdc); 547 } 548 549 /* 550 * If the old config rom needs to be overwritten, 551 * bump the businfo.generation indicator to 552 * indicate that we need to be reprobed 553 * See 1394a-2000 8.3.2.5.4 for more details. 554 * generation starts at 2 and rolls over at 0xF 555 * back to 2. 556 * 557 * A generation of 0 indicates a device 558 * that is not 1394a-2000 compliant. 559 * A generation of 1 indicates a device that 560 * does not change its Bus Info Block or 561 * Configuration ROM. 562 */ 563 #define FW_MAX_GENERATION 0xF 564 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); 565 src = &fc->crom_src_buf->src; 566 crom_load(src, newrom, CROMSIZE); 567 if (memcmp(newrom, fc->config_rom, CROMSIZE) != 0) { 568 if (src->businfo.generation++ > FW_MAX_GENERATION) 569 src->businfo.generation = FW_GENERATION_CHANGEABLE; 570 memcpy((void *)fc->config_rom, newrom, CROMSIZE); 571 } 572 free(newrom, M_FW); 573 } 574 575 /* Call once after reboot */ 576 void 577 fw_init(struct firewire_comm *fc) 578 { 579 int i; 580 581 fc->arq->queued = 0; 582 fc->ars->queued = 0; 583 fc->atq->queued = 0; 584 fc->ats->queued = 0; 585 586 fc->arq->buf = NULL; 587 fc->ars->buf = NULL; 588 fc->atq->buf = NULL; 589 fc->ats->buf = NULL; 590 591 fc->arq->flag = 0; 592 fc->ars->flag = 0; 593 fc->atq->flag = 0; 594 fc->ats->flag = 0; 595 596 STAILQ_INIT(&fc->atq->q); 597 STAILQ_INIT(&fc->ats->q); 598 mutex_init(&fc->arq->q_mtx, MUTEX_DEFAULT, IPL_VM); 599 mutex_init(&fc->ars->q_mtx, MUTEX_DEFAULT, IPL_VM); 600 mutex_init(&fc->atq->q_mtx, MUTEX_DEFAULT, IPL_VM); 601 mutex_init(&fc->ats->q_mtx, MUTEX_DEFAULT, IPL_VM); 602 603 fc->arq->maxq = FWMAXQUEUE; 604 fc->ars->maxq = FWMAXQUEUE; 605 fc->atq->maxq = FWMAXQUEUE; 606 fc->ats->maxq = FWMAXQUEUE; 607 608 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16; 609 CSRARC(fc, TOPO_MAP + 4) = 1; 610 CSRARC(fc, SPED_MAP) = 0x3f1 << 16; 611 CSRARC(fc, SPED_MAP + 4) = 1; 612 613 STAILQ_INIT(&fc->devices); 614 615 /* Initialize Async handlers */ 616 STAILQ_INIT(&fc->binds); 617 for (i = 0; i < 0x40; i++) 618 STAILQ_INIT(&fc->tlabels[i]); 619 620 /* DV depend CSRs see blue book */ 621 #if 0 622 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */ 623 CSRARC(fc, oPCR) = 0x8000007a; 624 for (i = 4; i < 0x7c/4; i+=4) 625 CSRARC(fc, i + oPCR) = 0x8000007a; 626 627 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */ 628 CSRARC(fc, iPCR) = 0x803f0000; 629 for (i = 4; i < 0x7c/4; i+=4) 630 CSRARC(fc, i + iPCR) = 0x0; 631 #endif 632 633 fc->crom_src_buf = NULL; 634 } 635 636 /* 637 * Called by HCI driver when it has determined the number of 638 * isochronous DMA channels. 639 */ 640 void 641 fw_init_isodma(struct firewire_comm *fc) 642 { 643 unsigned i; 644 645 for (i = 0; i < fc->nisodma; i++) { 646 fc->it[i]->queued = 0; 647 fc->ir[i]->queued = 0; 648 649 fc->it[i]->start = NULL; 650 fc->ir[i]->start = NULL; 651 652 fc->it[i]->buf = NULL; 653 fc->ir[i]->buf = NULL; 654 655 fc->it[i]->flag = FWXFERQ_STREAM; 656 fc->ir[i]->flag = FWXFERQ_STREAM; 657 658 STAILQ_INIT(&fc->it[i]->q); 659 STAILQ_INIT(&fc->ir[i]->q); 660 661 fc->ir[i]->maxq = FWMAXQUEUE; 662 fc->it[i]->maxq = FWMAXQUEUE; 663 664 cv_init(&fc->ir[i]->cv, "fw_read"); 665 cv_init(&fc->it[i]->cv, "fw_write"); 666 } 667 } 668 669 void 670 fw_destroy_isodma(struct firewire_comm *fc) 671 { 672 unsigned i; 673 674 for (i = 0; i < fc->nisodma; i++) { 675 cv_destroy(&fc->ir[i]->cv); 676 cv_destroy(&fc->it[i]->cv); 677 } 678 } 679 680 void 681 fw_destroy(struct firewire_comm *fc) 682 { 683 mutex_destroy(&fc->arq->q_mtx); 684 mutex_destroy(&fc->ars->q_mtx); 685 mutex_destroy(&fc->atq->q_mtx); 686 mutex_destroy(&fc->ats->q_mtx); 687 } 688 689 #define BIND_CMP(addr, fwb) \ 690 (((addr) < (fwb)->start) ? -1 : ((fwb)->end < (addr)) ? 1 : 0) 691 692 /* 693 * To lookup bound process from IEEE1394 address. 694 */ 695 struct fw_bind * 696 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo) 697 { 698 u_int64_t addr; 699 struct fw_bind *tfw, *r = NULL; 700 701 addr = ((u_int64_t)dest_hi << 32) | dest_lo; 702 mutex_enter(&fc->fc_mtx); 703 STAILQ_FOREACH(tfw, &fc->binds, fclist) 704 if (BIND_CMP(addr, tfw) == 0) { 705 r = tfw; 706 break; 707 } 708 mutex_exit(&fc->fc_mtx); 709 return r; 710 } 711 712 /* 713 * To bind IEEE1394 address block to process. 714 */ 715 int 716 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb) 717 { 718 struct fw_bind *tfw, *prev = NULL; 719 int r = 0; 720 721 if (fwb->start > fwb->end) { 722 aprint_error_dev(fc->bdev, "invalid range\n"); 723 return EINVAL; 724 } 725 726 mutex_enter(&fc->fc_mtx); 727 STAILQ_FOREACH(tfw, &fc->binds, fclist) { 728 if (fwb->end < tfw->start) 729 break; 730 prev = tfw; 731 } 732 if (prev == NULL) 733 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist); 734 else if (prev->end < fwb->start) 735 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist); 736 else { 737 aprint_error_dev(fc->bdev, "bind failed\n"); 738 r = EBUSY; 739 } 740 mutex_exit(&fc->fc_mtx); 741 return r; 742 } 743 744 /* 745 * To free IEEE1394 address block. 746 */ 747 int 748 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb) 749 { 750 #if 0 751 struct fw_xfer *xfer, *next; 752 #endif 753 struct fw_bind *tfw; 754 755 mutex_enter(&fc->fc_mtx); 756 STAILQ_FOREACH(tfw, &fc->binds, fclist) 757 if (tfw == fwb) { 758 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist); 759 mutex_exit(&fc->fc_mtx); 760 goto found; 761 } 762 763 mutex_exit(&fc->fc_mtx); 764 aprint_error_dev(fc->bdev, "no such binding\n"); 765 return 1; 766 found: 767 #if 0 768 /* shall we do this? */ 769 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) { 770 next = STAILQ_NEXT(xfer, link); 771 fw_xfer_free(xfer); 772 } 773 STAILQ_INIT(&fwb->xferlist); 774 #endif 775 776 return 0; 777 } 778 779 int 780 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type, int slen, 781 int rlen, int n, struct firewire_comm *fc, void *sc, 782 void (*hand)(struct fw_xfer *)) 783 { 784 struct fw_xfer *xfer; 785 int i; 786 787 for (i = 0; i < n; i++) { 788 xfer = fw_xfer_alloc_buf(type, slen, rlen); 789 if (xfer == NULL) 790 return n; 791 xfer->fc = fc; 792 xfer->sc = sc; 793 xfer->hand = hand; 794 STAILQ_INSERT_TAIL(q, xfer, link); 795 } 796 return n; 797 } 798 799 void 800 fw_xferlist_remove(struct fw_xferlist *q) 801 { 802 struct fw_xfer *xfer, *next; 803 804 for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) { 805 next = STAILQ_NEXT(xfer, link); 806 fw_xfer_free_buf(xfer); 807 } 808 STAILQ_INIT(q); 809 } 810 811 /* 812 * To allocate IEEE1394 XFER structure. 813 */ 814 struct fw_xfer * 815 fw_xfer_alloc(struct malloc_type *type) 816 { 817 struct fw_xfer *xfer; 818 819 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO); 820 if (xfer == NULL) 821 return xfer; 822 823 xfer->malloc = type; 824 cv_init(&xfer->cv, "fwxfer"); 825 826 return xfer; 827 } 828 829 struct fw_xfer * 830 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len) 831 { 832 struct fw_xfer *xfer; 833 834 xfer = fw_xfer_alloc(type); 835 if (xfer == NULL) 836 return NULL; 837 xfer->send.pay_len = send_len; 838 xfer->recv.pay_len = recv_len; 839 if (send_len > 0) { 840 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO); 841 if (xfer->send.payload == NULL) { 842 fw_xfer_free(xfer); 843 return NULL; 844 } 845 } 846 if (recv_len > 0) { 847 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT); 848 if (xfer->recv.payload == NULL) { 849 if (xfer->send.payload != NULL) 850 free(xfer->send.payload, type); 851 fw_xfer_free(xfer); 852 return NULL; 853 } 854 } 855 return xfer; 856 } 857 858 /* 859 * IEEE1394 XFER post process. 860 */ 861 void 862 fw_xfer_done(struct fw_xfer *xfer) 863 { 864 865 if (xfer->hand == NULL) { 866 aprint_error_dev(xfer->fc->bdev, "hand == NULL\n"); 867 return; 868 } 869 870 if (xfer->fc == NULL) 871 panic("fw_xfer_done: why xfer->fc is NULL?"); 872 873 fw_tl_free(xfer->fc, xfer); 874 xfer->hand(xfer); 875 } 876 877 void 878 fw_xfer_unload(struct fw_xfer* xfer) 879 { 880 881 if (xfer == NULL) 882 return; 883 if (xfer->flag & FWXF_INQ) { 884 aprint_error_dev(xfer->fc->bdev, "fw_xfer_free FWXF_INQ\n"); 885 mutex_enter(&xfer->q->q_mtx); 886 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); 887 #if 0 888 xfer->q->queued--; 889 #endif 890 mutex_exit(&xfer->q->q_mtx); 891 } 892 if (xfer->fc != NULL) { 893 #if 1 894 if (xfer->flag == FWXF_START) 895 /* 896 * This could happen if: 897 * 1. We call fwohci_arcv() before fwohci_txd(). 898 * 2. firewire_watch() is called. 899 */ 900 aprint_error_dev(xfer->fc->bdev, 901 "fw_xfer_free FWXF_START\n"); 902 #endif 903 } 904 xfer->flag = FWXF_INIT; 905 xfer->resp = 0; 906 } 907 908 /* 909 * To free IEEE1394 XFER structure. 910 */ 911 void 912 fw_xfer_free(struct fw_xfer* xfer) 913 { 914 915 if (xfer == NULL) { 916 aprint_error("fw_xfer_free: xfer == NULL\n"); 917 return; 918 } 919 fw_xfer_unload(xfer); 920 cv_destroy(&xfer->cv); 921 free(xfer, xfer->malloc); 922 } 923 924 void 925 fw_xfer_free_buf(struct fw_xfer* xfer) 926 { 927 928 if (xfer == NULL) { 929 aprint_error("fw_xfer_free_buf: xfer == NULL\n"); 930 return; 931 } 932 fw_xfer_unload(xfer); 933 if (xfer->send.payload != NULL) { 934 free(xfer->send.payload, xfer->malloc); 935 } 936 if (xfer->recv.payload != NULL) { 937 free(xfer->recv.payload, xfer->malloc); 938 } 939 cv_destroy(&xfer->cv); 940 free(xfer, xfer->malloc); 941 } 942 943 void 944 fw_asy_callback_free(struct fw_xfer *xfer) 945 { 946 947 #if 0 948 printf("asyreq done flag=%d resp=%d\n", xfer->flag, xfer->resp); 949 #endif 950 fw_xfer_free(xfer); 951 } 952 953 /* 954 * To receive self ID. 955 */ 956 void 957 fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len) 958 { 959 uint32_t *p; 960 union fw_self_id *self_id; 961 u_int i, j, node, c_port = 0, i_branch = 0; 962 963 fc->sid_cnt = len / (sizeof(uint32_t) * 2); 964 fc->max_node = fc->nodeid & 0x3f; 965 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16; 966 fc->status = FWBUSCYMELECT; 967 fc->topology_map->crc_len = 2; 968 fc->topology_map->generation++; 969 fc->topology_map->self_id_count = 0; 970 fc->topology_map->node_count = 0; 971 fc->speed_map->generation++; 972 fc->speed_map->crc_len = 1 + (64*64 + 3) / 4; 973 self_id = fc->topology_map->self_id; 974 for (i = 0; i < fc->sid_cnt; i++) { 975 if (sid[1] != ~sid[0]) { 976 aprint_error_dev(fc->bdev, 977 "ERROR invalid self-id packet\n"); 978 sid += 2; 979 continue; 980 } 981 *self_id = *((union fw_self_id *)sid); 982 fc->topology_map->crc_len++; 983 if (self_id->p0.sequel == 0) { 984 fc->topology_map->node_count++; 985 c_port = 0; 986 if (firewire_debug) 987 fw_print_sid(sid[0]); 988 node = self_id->p0.phy_id; 989 if (fc->max_node < node) 990 fc->max_node = self_id->p0.phy_id; 991 /* XXX I'm not sure this is the right speed_map */ 992 fc->speed_map->speed[node][node] = 993 self_id->p0.phy_speed; 994 for (j = 0; j < node; j++) 995 fc->speed_map->speed[j][node] = 996 fc->speed_map->speed[node][j] = 997 uimin(fc->speed_map->speed[j][j], 998 self_id->p0.phy_speed); 999 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) && 1000 (self_id->p0.link_active && self_id->p0.contender)) 1001 fc->irm = self_id->p0.phy_id; 1002 if (self_id->p0.port0 >= 0x2) 1003 c_port++; 1004 if (self_id->p0.port1 >= 0x2) 1005 c_port++; 1006 if (self_id->p0.port2 >= 0x2) 1007 c_port++; 1008 } 1009 if (c_port > 2) 1010 i_branch += (c_port - 2); 1011 sid += 2; 1012 self_id++; 1013 fc->topology_map->self_id_count++; 1014 } 1015 /* CRC */ 1016 fc->topology_map->crc = 1017 fw_crc16((uint32_t *)&fc->topology_map->generation, 1018 fc->topology_map->crc_len * 4); 1019 fc->speed_map->crc = fw_crc16((uint32_t *)&fc->speed_map->generation, 1020 fc->speed_map->crc_len * 4); 1021 /* byteswap and copy to CSR */ 1022 p = (uint32_t *)fc->topology_map; 1023 for (i = 0; i <= fc->topology_map->crc_len; i++) 1024 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++); 1025 p = (uint32_t *)fc->speed_map; 1026 CSRARC(fc, SPED_MAP) = htonl(*p++); 1027 CSRARC(fc, SPED_MAP + 4) = htonl(*p++); 1028 /* don't byte-swap uint8_t array */ 1029 memcpy(&CSRARC(fc, SPED_MAP + 8), p, (fc->speed_map->crc_len - 1) * 4); 1030 1031 fc->max_hop = fc->max_node - i_branch; 1032 aprint_normal_dev(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d)%s\n", 1033 fc->max_node + 1, fc->max_hop, 1034 (fc->irm == -1) ? "Not IRM capable" : "cable IRM", 1035 fc->irm, 1036 (fc->irm == fc->nodeid) ? " (me)" : ""); 1037 1038 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) { 1039 if (fc->irm == fc->nodeid) { 1040 fc->status = FWBUSMGRDONE; 1041 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm); 1042 fw_bmr(fc); 1043 } else { 1044 fc->status = FWBUSMGRELECT; 1045 callout_schedule(&fc->bmr_callout, hz/8); 1046 } 1047 } else 1048 fc->status = FWBUSMGRDONE; 1049 1050 callout_schedule(&fc->busprobe_callout, hz/4); 1051 } 1052 1053 /* 1054 * Generic packet receiving process. 1055 */ 1056 void 1057 fw_rcv(struct fw_rcv_buf *rb) 1058 { 1059 struct fw_pkt *fp, *resfp; 1060 struct fw_bind *bind; 1061 int tcode; 1062 int i, len, oldstate; 1063 #if 0 1064 { 1065 uint32_t *qld; 1066 int i; 1067 qld = (uint32_t *)buf; 1068 printf("spd %d len:%d\n", spd, len); 1069 for (i = 0; i <= len && i < 32; i+= 4) { 1070 printf("0x%08x ", ntohl(qld[i/4])); 1071 if ((i % 16) == 15) printf("\n"); 1072 } 1073 if ((i % 16) != 15) printf("\n"); 1074 } 1075 #endif 1076 fp = (struct fw_pkt *)rb->vec[0].iov_base; 1077 tcode = fp->mode.common.tcode; 1078 switch (tcode) { 1079 case FWTCODE_WRES: 1080 case FWTCODE_RRESQ: 1081 case FWTCODE_RRESB: 1082 case FWTCODE_LRES: 1083 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1084 fp->mode.hdr.tlrt >> 2, tcode); 1085 if (rb->xfer == NULL) { 1086 aprint_error_dev(rb->fc->bdev, "unknown response" 1087 " %s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n", 1088 tcode_str[tcode], tcode, 1089 fp->mode.hdr.src, 1090 fp->mode.hdr.tlrt >> 2, 1091 fp->mode.hdr.tlrt & 3, 1092 fp->mode.rresq.data); 1093 #if 0 1094 printf("try ad-hoc work around!!\n"); 1095 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, 1096 (fp->mode.hdr.tlrt >> 2) ^ 3); 1097 if (rb->xfer == NULL) { 1098 printf("no use...\n"); 1099 return; 1100 } 1101 #else 1102 return; 1103 #endif 1104 } 1105 fw_rcv_copy(rb); 1106 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP) 1107 rb->xfer->resp = EIO; 1108 else 1109 rb->xfer->resp = 0; 1110 /* make sure the packet is drained in AT queue */ 1111 oldstate = rb->xfer->flag; 1112 rb->xfer->flag = FWXF_RCVD; 1113 switch (oldstate) { 1114 case FWXF_SENT: 1115 fw_xfer_done(rb->xfer); 1116 break; 1117 case FWXF_START: 1118 #if 0 1119 if (firewire_debug) 1120 printf("not sent yet tl=%x\n", rb->xfer->tl); 1121 #endif 1122 break; 1123 default: 1124 aprint_error_dev(rb->fc->bdev, 1125 "unexpected flag 0x%02x\n", rb->xfer->flag); 1126 } 1127 return; 1128 case FWTCODE_WREQQ: 1129 case FWTCODE_WREQB: 1130 case FWTCODE_RREQQ: 1131 case FWTCODE_RREQB: 1132 case FWTCODE_LREQ: 1133 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi, 1134 fp->mode.rreqq.dest_lo); 1135 if (bind == NULL) { 1136 #if 1 1137 aprint_error_dev(rb->fc->bdev, "Unknown service addr" 1138 " 0x%04x:0x%08x %s(%x) src=0x%x data=%x\n", 1139 fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo, 1140 tcode_str[tcode], tcode, 1141 fp->mode.hdr.src, ntohl(fp->mode.wreqq.data)); 1142 #endif 1143 if (rb->fc->status == FWBUSINIT) { 1144 aprint_error_dev(rb->fc->bdev, 1145 "cannot respond(bus reset)!\n"); 1146 return; 1147 } 1148 rb->xfer = fw_xfer_alloc(M_FW); 1149 if (rb->xfer == NULL) 1150 return; 1151 rb->xfer->send.spd = rb->spd; 1152 rb->xfer->send.pay_len = 0; 1153 resfp = &rb->xfer->send.hdr; 1154 switch (tcode) { 1155 case FWTCODE_WREQQ: 1156 case FWTCODE_WREQB: 1157 resfp->mode.hdr.tcode = FWTCODE_WRES; 1158 break; 1159 case FWTCODE_RREQQ: 1160 resfp->mode.hdr.tcode = FWTCODE_RRESQ; 1161 break; 1162 case FWTCODE_RREQB: 1163 resfp->mode.hdr.tcode = FWTCODE_RRESB; 1164 break; 1165 case FWTCODE_LREQ: 1166 resfp->mode.hdr.tcode = FWTCODE_LRES; 1167 break; 1168 } 1169 resfp->mode.hdr.dst = fp->mode.hdr.src; 1170 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt; 1171 resfp->mode.hdr.pri = fp->mode.hdr.pri; 1172 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR; 1173 resfp->mode.rresb.extcode = 0; 1174 resfp->mode.rresb.len = 0; 1175 /* 1176 rb->xfer->hand = fw_xferwake; 1177 */ 1178 rb->xfer->hand = fw_xfer_free; 1179 if (fw_asyreq(rb->fc, -1, rb->xfer)) { 1180 fw_xfer_free(rb->xfer); 1181 return; 1182 } 1183 return; 1184 } 1185 len = 0; 1186 for (i = 0; i < rb->nvec; i++) 1187 len += rb->vec[i].iov_len; 1188 mutex_enter(&bind->fwb_mtx); 1189 rb->xfer = STAILQ_FIRST(&bind->xferlist); 1190 if (rb->xfer == NULL) { 1191 mutex_exit(&bind->fwb_mtx); 1192 #if 1 1193 aprint_error_dev(rb->fc->bdev, 1194 "Discard a packet for this bind.\n"); 1195 #endif 1196 return; 1197 } 1198 STAILQ_REMOVE_HEAD(&bind->xferlist, link); 1199 mutex_exit(&bind->fwb_mtx); 1200 fw_rcv_copy(rb); 1201 rb->xfer->hand(rb->xfer); 1202 return; 1203 1204 default: 1205 aprint_error_dev(rb->fc->bdev, "unknown tcode %d\n", tcode); 1206 break; 1207 } 1208 } 1209 1210 /* 1211 * CRC16 check-sum for IEEE1394 register blocks. 1212 */ 1213 uint16_t 1214 fw_crc16(uint32_t *ptr, uint32_t len) 1215 { 1216 uint32_t i, sum, crc = 0; 1217 int shift; 1218 1219 len = (len + 3) & ~3; 1220 for (i = 0; i < len; i+= 4) { 1221 for (shift = 28; shift >= 0; shift -= 4) { 1222 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf; 1223 crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum; 1224 } 1225 crc &= 0xffff; 1226 } 1227 return (uint16_t)crc; 1228 } 1229 1230 int 1231 fw_open_isodma(struct firewire_comm *fc, int tx) 1232 { 1233 struct fw_xferq **xferqa; 1234 struct fw_xferq *xferq; 1235 int i; 1236 1237 if (tx) 1238 xferqa = fc->it; 1239 else 1240 xferqa = fc->ir; 1241 1242 mutex_enter(&fc->fc_mtx); 1243 for (i = 0; i < fc->nisodma; i++) { 1244 xferq = xferqa[i]; 1245 if (!(xferq->flag & FWXFERQ_OPEN)) { 1246 xferq->flag |= FWXFERQ_OPEN; 1247 break; 1248 } 1249 } 1250 if (i == fc->nisodma) { 1251 aprint_error_dev(fc->bdev, "no free dma channel (tx=%d)\n", tx); 1252 i = -1; 1253 } 1254 mutex_exit(&fc->fc_mtx); 1255 return i; 1256 } 1257 1258 /* 1259 * Async. request with given xfer structure. 1260 */ 1261 static void 1262 fw_asystart(struct fw_xfer *xfer) 1263 { 1264 struct firewire_comm *fc = xfer->fc; 1265 1266 /* Protect from interrupt/timeout */ 1267 mutex_enter(&xfer->q->q_mtx); 1268 xfer->flag = FWXF_INQ; 1269 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); 1270 #if 0 1271 xfer->q->queued++; 1272 #endif 1273 mutex_exit(&xfer->q->q_mtx); 1274 /* XXX just queue for mbuf */ 1275 if (xfer->mbuf == NULL) 1276 xfer->q->start(fc); 1277 return; 1278 } 1279 1280 static void 1281 firewire_xfer_timeout(struct firewire_comm *fc) 1282 { 1283 struct fw_xfer *xfer; 1284 struct timeval tv; 1285 struct timeval split_timeout; 1286 STAILQ_HEAD(, fw_xfer) xfer_timeout; 1287 int i; 1288 1289 split_timeout.tv_sec = 0; 1290 split_timeout.tv_usec = 200 * 1000; /* 200 msec */ 1291 1292 microtime(&tv); 1293 timersub(&tv, &split_timeout, &tv); 1294 STAILQ_INIT(&xfer_timeout); 1295 1296 mutex_enter(&fc->tlabel_lock); 1297 for (i = 0; i < 0x40; i++) { 1298 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { 1299 if ((xfer->flag & FWXF_SENT) == 0) 1300 /* not sent yet */ 1301 break; 1302 if (timercmp(&xfer->tv, &tv, >)) 1303 /* the rests are newer than this */ 1304 break; 1305 aprint_error_dev(fc->bdev, 1306 "split transaction timeout: tl=0x%x flag=0x%02x\n", 1307 i, xfer->flag); 1308 fw_dump_hdr(&xfer->send.hdr, "send"); 1309 xfer->resp = ETIMEDOUT; 1310 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); 1311 STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel); 1312 } 1313 } 1314 mutex_exit(&fc->tlabel_lock); 1315 fc->timeout(fc); 1316 1317 STAILQ_FOREACH(xfer, &xfer_timeout, tlabel) 1318 xfer->hand(xfer); 1319 } 1320 1321 #define WATCHDOG_HZ 10 1322 static void 1323 firewire_watchdog(void *arg) 1324 { 1325 struct firewire_comm *fc; 1326 static int watchdog_clock = 0; 1327 1328 fc = (struct firewire_comm *)arg; 1329 1330 /* 1331 * At boot stage, the device interrupt is disabled and 1332 * We encounter a timeout easily. To avoid this, 1333 * ignore clock interrupt for a while. 1334 */ 1335 if (watchdog_clock > WATCHDOG_HZ * 15) 1336 firewire_xfer_timeout(fc); 1337 else 1338 watchdog_clock++; 1339 1340 callout_schedule(&fc->timeout_callout, hz / WATCHDOG_HZ); 1341 } 1342 1343 static void 1344 fw_xferq_drain(struct fw_xferq *xferq) 1345 { 1346 struct fw_xfer *xfer; 1347 1348 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) { 1349 STAILQ_REMOVE_HEAD(&xferq->q, link); 1350 #if 0 1351 xferq->queued--; 1352 #endif 1353 xfer->resp = EAGAIN; 1354 xfer->flag = FWXF_SENTERR; 1355 fw_xfer_done(xfer); 1356 } 1357 } 1358 1359 static void 1360 fw_reset_csr(struct firewire_comm *fc) 1361 { 1362 int i; 1363 1364 CSRARC(fc, STATE_CLEAR) = 1365 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 1366 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 1367 CSRARC(fc, NODE_IDS) = 0x3f; 1368 1369 CSRARC(fc, TOPO_MAP + 8) = 0; 1370 fc->irm = -1; 1371 1372 fc->max_node = -1; 1373 1374 for (i = 2; i < 0x100/4 - 2; i++) 1375 CSRARC(fc, SPED_MAP + i * 4) = 0; 1376 CSRARC(fc, STATE_CLEAR) = 1377 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; 1378 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 1379 CSRARC(fc, RESET_START) = 0; 1380 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0; 1381 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19; 1382 CSRARC(fc, CYCLE_TIME) = 0x0; 1383 CSRARC(fc, BUS_TIME) = 0x0; 1384 CSRARC(fc, BUS_MGR_ID) = 0x3f; 1385 CSRARC(fc, BANDWIDTH_AV) = 4915; 1386 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; 1387 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; 1388 CSRARC(fc, IP_CHANNELS) = (1U << 31); 1389 1390 CSRARC(fc, CONF_ROM) = 0x04 << 24; 1391 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */ 1392 CSRARC(fc, CONF_ROM + 8) = 1393 1U << 31 | 1 << 30 | 1 << 29 | 1 << 28 | 0xff << 16 | 0x09 << 8; 1394 CSRARC(fc, CONF_ROM + 0xc) = 0; 1395 1396 /* DV depend CSRs see blue book */ 1397 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON; 1398 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON; 1399 1400 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14); 1401 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); 1402 } 1403 1404 static void 1405 fw_init_crom(struct firewire_comm *fc) 1406 { 1407 struct crom_src *src; 1408 1409 src = &fc->crom_src_buf->src; 1410 memset(src, 0, sizeof(struct crom_src)); 1411 1412 /* BUS info sample */ 1413 src->hdr.info_len = 4; 1414 1415 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394; 1416 1417 src->businfo.irmc = 1; 1418 src->businfo.cmc = 1; 1419 src->businfo.isc = 1; 1420 src->businfo.bmc = 1; 1421 src->businfo.pmc = 0; 1422 src->businfo.cyc_clk_acc = 100; 1423 src->businfo.max_rec = fc->maxrec; 1424 src->businfo.max_rom = MAXROM_4; 1425 src->businfo.generation = FW_GENERATION_CHANGEABLE; 1426 src->businfo.link_spd = fc->speed; 1427 1428 src->businfo.eui64.hi = fc->eui.hi; 1429 src->businfo.eui64.lo = fc->eui.lo; 1430 1431 STAILQ_INIT(&src->chunk_list); 1432 1433 fc->crom_src = src; 1434 fc->crom_root = &fc->crom_src_buf->root; 1435 } 1436 1437 static void 1438 fw_reset_crom(struct firewire_comm *fc) 1439 { 1440 struct crom_src_buf *buf; 1441 struct crom_src *src; 1442 struct crom_chunk *root; 1443 1444 buf = fc->crom_src_buf; 1445 src = fc->crom_src; 1446 root = fc->crom_root; 1447 1448 STAILQ_INIT(&src->chunk_list); 1449 1450 memset(root, 0, sizeof(struct crom_chunk)); 1451 crom_add_chunk(src, NULL, root, 0); 1452 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */ 1453 /* private company_id */ 1454 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); 1455 crom_add_simple_text(src, root, &buf->vendor, PROJECT_STR); 1456 crom_add_entry(root, CSRKEY_HW, __NetBSD_Version__); 1457 crom_add_simple_text(src, root, &buf->hw, hostname); 1458 } 1459 1460 /* 1461 * dump packet header 1462 */ 1463 static void 1464 fw_dump_hdr(struct fw_pkt *fp, const char *prefix) 1465 { 1466 1467 printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x " 1468 "src=0x%03x\n", prefix, 1469 fp->mode.hdr.dst & 0x3f, 1470 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3, 1471 fp->mode.hdr.tcode, fp->mode.hdr.pri, 1472 fp->mode.hdr.src); 1473 } 1474 1475 /* 1476 * To free transaction label. 1477 */ 1478 static void 1479 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer) 1480 { 1481 struct fw_xfer *txfer; 1482 1483 if (xfer->tl < 0) 1484 return; 1485 1486 mutex_enter(&fc->tlabel_lock); 1487 #if 1 /* make sure the label is allocated */ 1488 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) 1489 if (txfer == xfer) 1490 break; 1491 if (txfer == NULL) { 1492 mutex_exit(&fc->tlabel_lock); 1493 aprint_error_dev(fc->bdev, 1494 "the xfer is not in the queue (tlabel=%d, flag=0x%x)\n", 1495 xfer->tl, xfer->flag); 1496 fw_dump_hdr(&xfer->send.hdr, "send"); 1497 fw_dump_hdr(&xfer->recv.hdr, "recv"); 1498 KASSERT(FALSE); 1499 return; 1500 } 1501 #endif 1502 1503 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); 1504 mutex_exit(&fc->tlabel_lock); 1505 return; 1506 } 1507 1508 /* 1509 * To obtain XFER structure by transaction label. 1510 */ 1511 static struct fw_xfer * 1512 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode) 1513 { 1514 struct fw_xfer *xfer; 1515 int req; 1516 1517 mutex_enter(&fc->tlabel_lock); 1518 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) 1519 if (xfer->send.hdr.mode.hdr.dst == node) { 1520 mutex_exit(&fc->tlabel_lock); 1521 KASSERT(xfer->tl == tlabel); 1522 /* extra sanity check */ 1523 req = xfer->send.hdr.mode.hdr.tcode; 1524 if (xfer->fc->tcode[req].valid_res != tcode) { 1525 aprint_error_dev(fc->bdev, 1526 "invalid response tcode (0x%x for 0x%x)\n", 1527 tcode, req); 1528 return NULL; 1529 } 1530 1531 if (firewire_debug > 2) 1532 printf("fw_tl2xfer: found tl=%d\n", tlabel); 1533 return xfer; 1534 } 1535 mutex_exit(&fc->tlabel_lock); 1536 if (firewire_debug > 1) 1537 printf("fw_tl2xfer: not found tl=%d\n", tlabel); 1538 return NULL; 1539 } 1540 1541 /* 1542 * To configure PHY. 1543 */ 1544 static void 1545 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count) 1546 { 1547 struct fw_xfer *xfer; 1548 struct fw_pkt *fp; 1549 1550 fc->status = FWBUSPHYCONF; 1551 1552 xfer = fw_xfer_alloc(M_FW); 1553 if (xfer == NULL) 1554 return; 1555 xfer->fc = fc; 1556 xfer->hand = fw_asy_callback_free; 1557 1558 fp = &xfer->send.hdr; 1559 fp->mode.ld[1] = 0; 1560 if (root_node >= 0) 1561 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23; 1562 if (gap_count >= 0) 1563 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16; 1564 fp->mode.ld[2] = ~fp->mode.ld[1]; 1565 /* XXX Dangerous, how to pass PHY packet to device driver */ 1566 fp->mode.common.tcode |= FWTCODE_PHY; 1567 1568 if (firewire_debug) 1569 printf("root_node=%d gap_count=%d\n", root_node, gap_count); 1570 fw_asyreq(fc, -1, xfer); 1571 } 1572 1573 /* 1574 * Dump self ID. 1575 */ 1576 static void 1577 fw_print_sid(uint32_t sid) 1578 { 1579 union fw_self_id *s; 1580 1581 s = (union fw_self_id *) &sid; 1582 if (s->p0.sequel) { 1583 if (s->p1.sequence_num == FW_SELF_ID_PAGE0) 1584 printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d" 1585 "p8:%d p9:%d p10:%d\n", 1586 s->p1.phy_id, s->p1.port3, s->p1.port4, 1587 s->p1.port5, s->p1.port6, s->p1.port7, 1588 s->p1.port8, s->p1.port9, s->p1.port10); 1589 else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) 1590 printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n", 1591 s->p2.phy_id, s->p2.port11, s->p2.port12, 1592 s->p2.port13, s->p2.port14, s->p2.port15); 1593 else 1594 printf("node:%d Unknown Self ID Page number %d\n", 1595 s->p1.phy_id, s->p1.sequence_num); 1596 } else 1597 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d" 1598 " p0:%d p1:%d p2:%d i:%d m:%d\n", 1599 s->p0.phy_id, s->p0.link_active, s->p0.gap_count, 1600 s->p0.phy_speed, s->p0.contender, 1601 s->p0.power_class, s->p0.port0, s->p0.port1, 1602 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets); 1603 } 1604 1605 /* 1606 * To probe devices on the IEEE1394 bus. 1607 */ 1608 static void 1609 fw_bus_probe(struct firewire_comm *fc) 1610 { 1611 struct fw_device *fwdev; 1612 1613 mutex_enter(&fc->wait_lock); 1614 fc->status = FWBUSEXPLORE; 1615 1616 /* Invalidate all devices, just after bus reset. */ 1617 if (firewire_debug) 1618 printf("iterate and invalidate all nodes\n"); 1619 mutex_enter(&fc->fc_mtx); 1620 STAILQ_FOREACH(fwdev, &fc->devices, link) 1621 if (fwdev->status != FWDEVINVAL) { 1622 fwdev->status = FWDEVINVAL; 1623 fwdev->rcnt = 0; 1624 if (firewire_debug) 1625 printf("Invalidate Dev ID: %08x%08x\n", 1626 fwdev->eui.hi, fwdev->eui.lo); 1627 } else 1628 if (firewire_debug) 1629 printf("Dev ID: %08x%08x already invalid\n", 1630 fwdev->eui.hi, fwdev->eui.lo); 1631 mutex_exit(&fc->fc_mtx); 1632 1633 cv_signal(&fc->fc_cv); 1634 mutex_exit(&fc->wait_lock); 1635 } 1636 1637 static int 1638 fw_explore_read_quads(struct fw_device *fwdev, int offset, uint32_t *quad, 1639 int length) 1640 { 1641 struct fw_xfer *xfer; 1642 uint32_t tmp; 1643 int i, error; 1644 1645 for (i = 0; i < length; i++, offset += sizeof(uint32_t)) { 1646 xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff, 1647 0xf0000000 | offset, (void *)&tmp, fw_xferwake); 1648 if (xfer == NULL) 1649 return -1; 1650 fw_xferwait(xfer); 1651 1652 if (xfer->resp == 0) 1653 quad[i] = ntohl(tmp); 1654 1655 error = xfer->resp; 1656 fw_xfer_free(xfer); 1657 if (error) 1658 return error; 1659 } 1660 return 0; 1661 } 1662 1663 1664 static int 1665 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur) 1666 { 1667 int err, i, off; 1668 struct csrdirectory *dir; 1669 struct csrreg *reg; 1670 1671 1672 dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)]; 1673 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, (uint32_t *)dir, 1674 1); 1675 if (err) 1676 return -1; 1677 1678 offset += sizeof(uint32_t); 1679 reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)]; 1680 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, (uint32_t *)reg, 1681 dir->crc_len); 1682 if (err) 1683 return -1; 1684 1685 /* XXX check CRC */ 1686 1687 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1); 1688 if (fwdev->rommax < off) 1689 fwdev->rommax = off; 1690 1691 if (recur == 0) 1692 return 0; 1693 1694 for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) { 1695 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D) 1696 recur = 1; 1697 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L) 1698 recur = 0; 1699 else 1700 continue; 1701 1702 off = offset + reg[i].val * sizeof(uint32_t); 1703 if (off > CROMSIZE) { 1704 aprint_error_dev(fwdev->fc->bdev, "invalid offset %d\n", 1705 off); 1706 return -1; 1707 } 1708 err = fw_explore_csrblock(fwdev, off, recur); 1709 if (err) 1710 return -1; 1711 } 1712 return 0; 1713 } 1714 1715 static int 1716 fw_explore_node(struct fw_device *dfwdev) 1717 { 1718 struct firewire_comm *fc; 1719 struct fw_device *fwdev, *pfwdev, *tfwdev; 1720 struct csrhdr *hdr; 1721 struct bus_info *binfo; 1722 uint32_t *csr, speed_test = 0; 1723 int err, node; 1724 1725 fc = dfwdev->fc; 1726 csr = dfwdev->csrrom; 1727 node = dfwdev->dst; 1728 1729 /* First quad */ 1730 err = fw_explore_read_quads(dfwdev, CSRROMOFF, csr, 1); 1731 if (err) { 1732 aprint_error_dev(fc->bdev, 1733 "node%d: explore_read_quads failure\n", node); 1734 dfwdev->status = FWDEVINVAL; 1735 return -1; 1736 } 1737 hdr = (struct csrhdr *)csr; 1738 if (hdr->info_len != 4) { 1739 if (firewire_debug) 1740 printf("node%d: wrong bus info len(%d)\n", 1741 node, hdr->info_len); 1742 dfwdev->status = FWDEVINVAL; 1743 return -1; 1744 } 1745 1746 /* bus info */ 1747 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); 1748 if (err) { 1749 aprint_error_dev(fc->bdev, "node%d: error reading 0x04\n", 1750 node); 1751 dfwdev->status = FWDEVINVAL; 1752 return -1; 1753 } 1754 binfo = (struct bus_info *)&csr[1]; 1755 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { 1756 aprint_error_dev(fc->bdev, "node%d: invalid bus name 0x%08x\n", 1757 node, binfo->bus_name); 1758 dfwdev->status = FWDEVINVAL; 1759 return -1; 1760 } 1761 if (firewire_debug) 1762 printf("node(%d) BUS INFO BLOCK:\n" 1763 "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) " 1764 "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) " 1765 "generation(%d) link_spd(%d)\n", 1766 node, binfo->irmc, binfo->cmc, binfo->isc, 1767 binfo->bmc, binfo->pmc, binfo->cyc_clk_acc, 1768 binfo->max_rec, binfo->max_rom, 1769 binfo->generation, binfo->link_spd); 1770 1771 mutex_enter(&fc->fc_mtx); 1772 STAILQ_FOREACH(fwdev, &fc->devices, link) 1773 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) 1774 break; 1775 mutex_exit(&fc->fc_mtx); 1776 if (fwdev == NULL) { 1777 /* new device */ 1778 fwdev = malloc(sizeof(struct fw_device), M_FW, M_WAITOK | M_ZERO); 1779 fwdev->fc = fc; 1780 fwdev->eui = binfo->eui64; 1781 fwdev->dst = dfwdev->dst; 1782 fwdev->maxrec = dfwdev->maxrec; 1783 fwdev->status = FWDEVNEW; 1784 /* 1785 * Pre-1394a-2000 didn't have link_spd in 1786 * the Bus Info block, so try and use the 1787 * speed map value. 1788 * 1394a-2000 compliant devices only use 1789 * the Bus Info Block link spd value, so 1790 * ignore the speed map altogether. SWB 1791 */ 1792 if (binfo->link_spd == FWSPD_S100 /* 0 */) { 1793 aprint_normal_dev(fc->bdev, 1794 "Pre 1394a-2000 detected\n"); 1795 fwdev->speed = fc->speed_map->speed[fc->nodeid][node]; 1796 } else 1797 fwdev->speed = binfo->link_spd; 1798 /* 1799 * Test this speed with a read to the CSRROM. 1800 * If it fails, slow down the speed and retry. 1801 */ 1802 while (fwdev->speed > FWSPD_S100 /* 0 */) { 1803 err = fw_explore_read_quads(fwdev, CSRROMOFF, 1804 &speed_test, 1); 1805 if (err) { 1806 aprint_error_dev(fc->bdev, "fwdev->speed(%s)" 1807 " decremented due to negotiation\n", 1808 fw_linkspeed[fwdev->speed]); 1809 fwdev->speed--; 1810 } else 1811 break; 1812 } 1813 /* 1814 * If the fwdev is not found in the 1815 * fc->devices TAILQ, then we will add it. 1816 */ 1817 pfwdev = NULL; 1818 mutex_enter(&fc->fc_mtx); 1819 STAILQ_FOREACH(tfwdev, &fc->devices, link) { 1820 if (tfwdev->eui.hi > fwdev->eui.hi || 1821 (tfwdev->eui.hi == fwdev->eui.hi && 1822 tfwdev->eui.lo > fwdev->eui.lo)) 1823 break; 1824 pfwdev = tfwdev; 1825 } 1826 if (pfwdev == NULL) 1827 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link); 1828 else 1829 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link); 1830 mutex_exit(&fc->fc_mtx); 1831 1832 aprint_normal_dev(fc->bdev, "New %s device ID:%08x%08x\n", 1833 fw_linkspeed[fwdev->speed], fwdev->eui.hi, fwdev->eui.lo); 1834 } else { 1835 fwdev->dst = node; 1836 fwdev->status = FWDEVINIT; 1837 /* unchanged ? */ 1838 if (memcmp(csr, fwdev->csrrom, sizeof(uint32_t) * 5) == 0) { 1839 if (firewire_debug) 1840 printf("node%d: crom unchanged\n", node); 1841 return 0; 1842 } 1843 } 1844 1845 memset(fwdev->csrrom, 0, CROMSIZE); 1846 1847 /* copy first quad and bus info block */ 1848 memcpy(fwdev->csrrom, csr, sizeof(uint32_t) * 5); 1849 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; 1850 1851 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ 1852 1853 if (err) { 1854 if (firewire_debug) 1855 printf("explore csrblock failed err(%d)\n", err); 1856 fwdev->status = FWDEVINVAL; 1857 fwdev->csrrom[0] = 0; 1858 } 1859 return err; 1860 } 1861 1862 /* 1863 * Find the self_id packet for a node, ignoring sequels. 1864 */ 1865 static union fw_self_id * 1866 fw_find_self_id(struct firewire_comm *fc, int node) 1867 { 1868 uint32_t i; 1869 union fw_self_id *s; 1870 1871 for (i = 0; i < fc->topology_map->self_id_count; i++) { 1872 s = &fc->topology_map->self_id[i]; 1873 if (s->p0.sequel) 1874 continue; 1875 if (s->p0.phy_id == node) 1876 return s; 1877 } 1878 return 0; 1879 } 1880 1881 static void 1882 fw_explore(struct firewire_comm *fc) 1883 { 1884 struct fw_device *dfwdev; 1885 union fw_self_id *fwsid; 1886 int node, err, i, todo, todo2, trys; 1887 char nodes[63]; 1888 1889 todo = 0; 1890 dfwdev = malloc(sizeof(*dfwdev), M_TEMP, M_WAITOK); 1891 1892 /* setup dummy fwdev */ 1893 dfwdev->fc = fc; 1894 dfwdev->speed = 0; 1895 dfwdev->maxrec = 8; /* 512 */ 1896 dfwdev->status = FWDEVINIT; 1897 1898 for (node = 0; node <= fc->max_node; node++) { 1899 /* We don't probe myself and linkdown nodes */ 1900 if (node == fc->nodeid) { 1901 if (firewire_debug) 1902 printf("found myself node(%d) fc->nodeid(%d)" 1903 " fc->max_node(%d)\n", 1904 node, fc->nodeid, fc->max_node); 1905 continue; 1906 } else if (firewire_debug) 1907 printf("node(%d) fc->max_node(%d) found\n", 1908 node, fc->max_node); 1909 fwsid = fw_find_self_id(fc, node); 1910 if (!fwsid || !fwsid->p0.link_active) { 1911 if (firewire_debug) 1912 printf("node%d: link down\n", node); 1913 continue; 1914 } 1915 nodes[todo++] = node; 1916 } 1917 1918 for (trys = 0; todo > 0 && trys < 3; trys++) { 1919 todo2 = 0; 1920 for (i = 0; i < todo; i++) { 1921 dfwdev->dst = nodes[i]; 1922 err = fw_explore_node(dfwdev); 1923 if (err) 1924 nodes[todo2++] = nodes[i]; 1925 if (firewire_debug) 1926 printf("node %d, err = %d\n", nodes[i], err); 1927 } 1928 todo = todo2; 1929 } 1930 free(dfwdev, M_TEMP); 1931 } 1932 1933 static void 1934 fw_bus_probe_thread(void *arg) 1935 { 1936 struct firewire_comm *fc = (struct firewire_comm *)arg; 1937 1938 /* 1939 * Tell config we've scanned the bus. 1940 * 1941 * XXX This is not right -- we haven't actually scanned it. We 1942 * probably ought to call this after the first bus exploration. 1943 * 1944 * bool once = false; 1945 * ... 1946 * fw_attach_dev(fc); 1947 * if (!once) { 1948 * config_pending_decr(); 1949 * once = true; 1950 * } 1951 */ 1952 config_pending_decr(fc->bdev); 1953 1954 mutex_enter(&fc->wait_lock); 1955 while (fc->status != FWBUSDETACH) { 1956 if (fc->status == FWBUSEXPLORE) { 1957 mutex_exit(&fc->wait_lock); 1958 fw_explore(fc); 1959 fc->status = FWBUSEXPDONE; 1960 if (firewire_debug) 1961 printf("bus_explore done\n"); 1962 fw_attach_dev(fc); 1963 mutex_enter(&fc->wait_lock); 1964 } 1965 cv_wait_sig(&fc->fc_cv, &fc->wait_lock); 1966 } 1967 fc->status = FWBUSDETACHOK; 1968 cv_signal(&fc->fc_cv); 1969 mutex_exit(&fc->wait_lock); 1970 kthread_exit(0); 1971 1972 /* NOTREACHED */ 1973 } 1974 1975 static const char * 1976 fw_get_devclass(struct fw_device *fwdev) 1977 { 1978 struct crom_context cc; 1979 struct csrreg *reg; 1980 1981 crom_init_context(&cc, fwdev->csrrom); 1982 reg = crom_search_key(&cc, CSRKEY_VER); 1983 if (reg == NULL) 1984 return "null"; 1985 1986 switch (reg->val) { 1987 case CSR_PROTAVC: 1988 return "av/c"; 1989 case CSR_PROTCAL: 1990 return "cal"; 1991 case CSR_PROTEHS: 1992 return "ehs"; 1993 case CSR_PROTHAVI: 1994 return "havi"; 1995 case CSR_PROTCAM104: 1996 return "cam104"; 1997 case CSR_PROTCAM120: 1998 return "cam120"; 1999 case CSR_PROTCAM130: 2000 return "cam130"; 2001 case CSR_PROTDPP: 2002 return "printer"; 2003 case CSR_PROTIICP: 2004 return "iicp"; 2005 case CSRVAL_T10SBP2: 2006 return "sbp"; 2007 default: 2008 if (firewire_debug) 2009 printf("%s: reg->val 0x%x\n", 2010 __func__, reg->val); 2011 return "sbp"; 2012 } 2013 } 2014 2015 /* 2016 * To attach sub-devices layer onto IEEE1394 bus. 2017 */ 2018 static void 2019 fw_attach_dev(struct firewire_comm *fc) 2020 { 2021 struct firewire_softc *sc = device_private(fc->bdev); 2022 struct firewire_dev_list *devlist, *elm; 2023 struct fw_device *fwdev, *next; 2024 struct firewire_dev_comm *fdc; 2025 struct fw_attach_args fwa; 2026 int locs[IEEE1394IFCF_NLOCS]; 2027 2028 fwa.name = "null"; 2029 fwa.fc = fc; 2030 2031 mutex_enter(&fc->fc_mtx); 2032 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { 2033 next = STAILQ_NEXT(fwdev, link); 2034 mutex_exit(&fc->fc_mtx); 2035 switch (fwdev->status) { 2036 case FWDEVNEW: 2037 devlist = malloc(sizeof(struct firewire_dev_list), 2038 M_DEVBUF, M_WAITOK); 2039 locs[IEEE1394IFCF_EUIHI] = fwdev->eui.hi; 2040 locs[IEEE1394IFCF_EUILO] = fwdev->eui.lo; 2041 2042 fwa.name = fw_get_devclass(fwdev); 2043 fwa.fwdev = fwdev; 2044 KERNEL_LOCK(1, NULL); 2045 fwdev->dev = config_found(sc->dev, &fwa, firewire_print, 2046 CFARGS(.submatch = config_stdsubmatch, 2047 .locators = locs)); 2048 KERNEL_UNLOCK_ONE(NULL); 2049 if (fwdev->dev == NULL) { 2050 free(devlist, M_DEVBUF); 2051 break; 2052 } 2053 2054 devlist->fwdev = fwdev; 2055 devlist->dev = fwdev->dev; 2056 2057 mutex_enter(&fc->fc_mtx); 2058 if (SLIST_EMPTY(&sc->devlist)) 2059 SLIST_INSERT_HEAD(&sc->devlist, devlist, link); 2060 else { 2061 for (elm = SLIST_FIRST(&sc->devlist); 2062 SLIST_NEXT(elm, link) != NULL; 2063 elm = SLIST_NEXT(elm, link)); 2064 SLIST_INSERT_AFTER(elm, devlist, link); 2065 } 2066 mutex_exit(&fc->fc_mtx); 2067 2068 /* FALLTHROUGH */ 2069 2070 case FWDEVINIT: 2071 case FWDEVATTACHED: 2072 fwdev->status = FWDEVATTACHED; 2073 break; 2074 2075 case FWDEVINVAL: 2076 fwdev->rcnt++; 2077 if (firewire_debug) 2078 printf("fwdev->rcnt(%d), hold_count(%d)\n", 2079 fwdev->rcnt, hold_count); 2080 break; 2081 2082 default: 2083 /* XXX */ 2084 break; 2085 } 2086 mutex_enter(&fc->fc_mtx); 2087 } 2088 mutex_exit(&fc->fc_mtx); 2089 2090 SLIST_FOREACH(devlist, &sc->devlist, link) { 2091 fdc = device_private(devlist->dev); 2092 if (fdc->post_explore != NULL) 2093 fdc->post_explore(fdc); 2094 } 2095 2096 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { 2097 next = STAILQ_NEXT(fwdev, link); 2098 if (fwdev->rcnt > 0 && fwdev->rcnt > hold_count) { 2099 /* 2100 * Remove devices which have not been seen 2101 * for a while. 2102 */ 2103 SLIST_FOREACH(devlist, &sc->devlist, link) 2104 if (devlist->fwdev == fwdev) 2105 break; 2106 2107 if (devlist == NULL) 2108 continue; 2109 2110 if (devlist->fwdev != fwdev) 2111 panic("already detached"); 2112 2113 SLIST_REMOVE(&sc->devlist, devlist, firewire_dev_list, 2114 link); 2115 free(devlist, M_DEVBUF); 2116 2117 if (config_detach(fwdev->dev, DETACH_FORCE) != 0) 2118 return; 2119 2120 STAILQ_REMOVE(&fc->devices, fwdev, fw_device, link); 2121 free(fwdev, M_FW); 2122 } 2123 } 2124 2125 return; 2126 } 2127 2128 /* 2129 * To allocate unique transaction label. 2130 */ 2131 static int 2132 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer) 2133 { 2134 u_int dst, new_tlabel; 2135 struct fw_xfer *txfer; 2136 2137 dst = xfer->send.hdr.mode.hdr.dst & 0x3f; 2138 mutex_enter(&fc->tlabel_lock); 2139 new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f; 2140 STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel) 2141 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst) 2142 break; 2143 if (txfer == NULL) { 2144 fc->last_tlabel[dst] = new_tlabel; 2145 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel); 2146 mutex_exit(&fc->tlabel_lock); 2147 xfer->tl = new_tlabel; 2148 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2; 2149 if (firewire_debug > 1) 2150 printf("fw_get_tlabel: dst=%d tl=%d\n", 2151 dst, new_tlabel); 2152 return new_tlabel; 2153 } 2154 mutex_exit(&fc->tlabel_lock); 2155 2156 if (firewire_debug > 1) 2157 printf("fw_get_tlabel: no free tlabel\n"); 2158 return -1; 2159 } 2160 2161 static void 2162 fw_rcv_copy(struct fw_rcv_buf *rb) 2163 { 2164 struct fw_pkt *pkt; 2165 u_char *p; 2166 const struct tcode_info *tinfo; 2167 u_int res, i, len, plen; 2168 2169 rb->xfer->recv.spd = rb->spd; 2170 2171 pkt = (struct fw_pkt *)rb->vec->iov_base; 2172 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode]; 2173 2174 /* Copy header */ 2175 p = (u_char *)&rb->xfer->recv.hdr; 2176 memcpy(p, rb->vec->iov_base, tinfo->hdr_len); 2177 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len; 2178 rb->vec->iov_len -= tinfo->hdr_len; 2179 2180 /* Copy payload */ 2181 p = (u_char *)rb->xfer->recv.payload; 2182 res = rb->xfer->recv.pay_len; 2183 2184 /* special handling for RRESQ */ 2185 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ && 2186 p != NULL && res >= sizeof(uint32_t)) { 2187 *(uint32_t *)p = pkt->mode.rresq.data; 2188 rb->xfer->recv.pay_len = sizeof(uint32_t); 2189 return; 2190 } 2191 2192 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0) 2193 return; 2194 2195 plen = pkt->mode.rresb.len; 2196 2197 for (i = 0; i < rb->nvec; i++, rb->vec++) { 2198 len = MIN(rb->vec->iov_len, plen); 2199 if (res < len) { 2200 aprint_error_dev(rb->fc->bdev, 2201 "rcv buffer(%d) is %d bytes short.\n", 2202 rb->xfer->recv.pay_len, len - res); 2203 len = res; 2204 } 2205 if (p) { 2206 memcpy(p, rb->vec->iov_base, len); 2207 p += len; 2208 } 2209 res -= len; 2210 plen -= len; 2211 if (res == 0 || plen == 0) 2212 break; 2213 } 2214 rb->xfer->recv.pay_len -= res; 2215 2216 } 2217 2218 /* 2219 * Post process for Bus Manager election process. 2220 */ 2221 static void 2222 fw_try_bmr_callback(struct fw_xfer *xfer) 2223 { 2224 struct firewire_comm *fc; 2225 int bmr; 2226 2227 if (xfer == NULL) 2228 return; 2229 fc = xfer->fc; 2230 if (xfer->resp != 0) 2231 goto error; 2232 if (xfer->recv.payload == NULL) 2233 goto error; 2234 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE) 2235 goto error; 2236 2237 bmr = ntohl(xfer->recv.payload[0]); 2238 if (bmr == 0x3f) 2239 bmr = fc->nodeid; 2240 2241 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f); 2242 fw_xfer_free_buf(xfer); 2243 fw_bmr(fc); 2244 return; 2245 2246 error: 2247 aprint_error_dev(fc->bdev, "bus manager election failed\n"); 2248 fw_xfer_free_buf(xfer); 2249 } 2250 2251 2252 /* 2253 * To candidate Bus Manager election process. 2254 */ 2255 static void 2256 fw_try_bmr(void *arg) 2257 { 2258 struct fw_xfer *xfer; 2259 struct firewire_comm *fc = (struct firewire_comm *)arg; 2260 struct fw_pkt *fp; 2261 int err = 0; 2262 2263 xfer = fw_xfer_alloc_buf(M_FW, 8, 4); 2264 if (xfer == NULL) 2265 return; 2266 xfer->send.spd = 0; 2267 fc->status = FWBUSMGRELECT; 2268 2269 fp = &xfer->send.hdr; 2270 fp->mode.lreq.dest_hi = 0xffff; 2271 fp->mode.lreq.tlrt = 0; 2272 fp->mode.lreq.tcode = FWTCODE_LREQ; 2273 fp->mode.lreq.pri = 0; 2274 fp->mode.lreq.src = 0; 2275 fp->mode.lreq.len = 8; 2276 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP; 2277 fp->mode.lreq.dst = FWLOCALBUS | fc->irm; 2278 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID; 2279 xfer->send.payload[0] = htonl(0x3f); 2280 xfer->send.payload[1] = htonl(fc->nodeid); 2281 xfer->hand = fw_try_bmr_callback; 2282 2283 err = fw_asyreq(fc, -1, xfer); 2284 if (err) { 2285 fw_xfer_free_buf(xfer); 2286 return; 2287 } 2288 return; 2289 } 2290 2291 /* 2292 * Find the root node, if it is not 2293 * Cycle Master Capable, then we should 2294 * override this and become the Cycle 2295 * Master 2296 */ 2297 static int 2298 fw_bmr(struct firewire_comm *fc) 2299 { 2300 struct fw_device fwdev; 2301 union fw_self_id *self_id; 2302 int cmstr; 2303 uint32_t quad; 2304 2305 /* Check to see if the current root node is cycle master capable */ 2306 self_id = fw_find_self_id(fc, fc->max_node); 2307 if (fc->max_node > 0) { 2308 /* XXX check cmc bit of businfo block rather than contender */ 2309 if (self_id->p0.link_active && self_id->p0.contender) 2310 cmstr = fc->max_node; 2311 else { 2312 aprint_normal_dev(fc->bdev, 2313 "root node is not cycle master capable\n"); 2314 /* XXX shall we be the cycle master? */ 2315 cmstr = fc->nodeid; 2316 /* XXX need bus reset */ 2317 } 2318 } else 2319 cmstr = -1; 2320 2321 aprint_normal_dev(fc->bdev, "bus manager %d%s\n", 2322 CSRARC(fc, BUS_MGR_ID), 2323 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? " (me)" : ""); 2324 if (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) 2325 /* We are not the bus manager */ 2326 return 0; 2327 2328 /* Optimize gapcount */ 2329 if (fc->max_hop <= MAX_GAPHOP) 2330 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]); 2331 /* If we are the cycle master, nothing to do */ 2332 if (cmstr == fc->nodeid || cmstr == -1) 2333 return 0; 2334 /* Bus probe has not finished, make dummy fwdev for cmstr */ 2335 memset(&fwdev, 0, sizeof(fwdev)); 2336 fwdev.fc = fc; 2337 fwdev.dst = cmstr; 2338 fwdev.speed = 0; 2339 fwdev.maxrec = 8; /* 512 */ 2340 fwdev.status = FWDEVINIT; 2341 /* Set cmstr bit on the cycle master */ 2342 quad = htonl(1 << 8); 2343 fwmem_write_quad(&fwdev, NULL, 0/*spd*/, 0xffff, 0xf0000000 | STATE_SET, 2344 &quad, fw_asy_callback_free); 2345 2346 return 0; 2347 }
Cache object: 74ecdf368a340e8c9d9374e71caba9d9
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