fwdev.c revision 1.18
1 /* $NetBSD: fwdev.c,v 1.18 2010/03/29 03:05:27 kiyohara 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/fwdev.c,v 1.52 2007/06/06 14:31:36 simokawa Exp $ 36 * 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: fwdev.c,v 1.18 2010/03/29 03:05:27 kiyohara Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/device.h> 44 #include <sys/errno.h> 45 #include <sys/buf.h> 46 #include <sys/bus.h> 47 #include <sys/conf.h> 48 #include <sys/kernel.h> 49 #include <sys/malloc.h> 50 #include <sys/mbuf.h> 51 #include <sys/poll.h> 52 #include <sys/proc.h> 53 #include <sys/select.h> 54 55 #include <dev/ieee1394/firewire.h> 56 #include <dev/ieee1394/firewirereg.h> 57 #include <dev/ieee1394/fwdma.h> 58 #include <dev/ieee1394/fwmem.h> 59 #include <dev/ieee1394/iec68113.h> 60 61 #include "ioconf.h" 62 63 #define FWNODE_INVAL 0xffff 64 65 dev_type_open(fw_open); 66 dev_type_close(fw_close); 67 dev_type_read(fw_read); 68 dev_type_write(fw_write); 69 dev_type_ioctl(fw_ioctl); 70 dev_type_poll(fw_poll); 71 dev_type_mmap(fw_mmap); 72 dev_type_strategy(fw_strategy); 73 74 const struct bdevsw fw_bdevsw = { 75 fw_open, fw_close, fw_strategy, fw_ioctl, nodump, nosize, D_OTHER, 76 }; 77 78 const struct cdevsw fw_cdevsw = { 79 fw_open, fw_close, fw_read, fw_write, fw_ioctl, 80 nostop, notty, fw_poll, fw_mmap, nokqfilter, D_OTHER, 81 }; 82 83 struct fw_drv1 { 84 struct firewire_comm *fc; 85 struct fw_xferq *ir; 86 struct fw_xferq *it; 87 struct fw_isobufreq bufreq; 88 STAILQ_HEAD(, fw_bind) binds; 89 STAILQ_HEAD(, fw_xfer) rq; 90 }; 91 92 static int fwdev_allocbuf(struct firewire_comm *, struct fw_xferq *, 93 struct fw_bufspec *); 94 static int fwdev_freebuf(struct fw_xferq *); 95 static int fw_read_async(struct fw_drv1 *, struct uio *, int); 96 static int fw_write_async(struct fw_drv1 *, struct uio *, int); 97 static void fw_hand(struct fw_xfer *); 98 99 100 int 101 fw_open(dev_t dev, int flags, int fmt, struct lwp *td) 102 { 103 struct firewire_softc *sc; 104 struct fw_drv1 *d; 105 int err = 0; 106 107 sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev)); 108 if (sc == NULL) 109 return ENXIO; 110 111 if (DEV_FWMEM(dev)) 112 return fwmem_open(dev, flags, fmt, td); 113 114 mutex_enter(&sc->fc->fc_mtx); 115 if (sc->si_drv1 != NULL) { 116 mutex_exit(&sc->fc->fc_mtx); 117 return EBUSY; 118 } 119 /* set dummy value for allocation */ 120 sc->si_drv1 = (void *)-1; 121 mutex_exit(&sc->fc->fc_mtx); 122 123 sc->si_drv1 = malloc(sizeof(struct fw_drv1), M_FW, M_WAITOK | M_ZERO); 124 if (sc->si_drv1 == NULL) 125 return ENOMEM; 126 127 d = (struct fw_drv1 *)sc->si_drv1; 128 d->fc = sc->fc; 129 STAILQ_INIT(&d->binds); 130 STAILQ_INIT(&d->rq); 131 132 return err; 133 } 134 135 int 136 fw_close(dev_t dev, int flags, int fmt, struct lwp *td) 137 { 138 struct firewire_softc *sc; 139 struct firewire_comm *fc; 140 struct fw_drv1 *d; 141 struct fw_xfer *xfer; 142 struct fw_bind *fwb; 143 int err = 0; 144 145 sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev)); 146 if (sc == NULL) 147 return ENXIO; 148 149 if (DEV_FWMEM(dev)) 150 return fwmem_close(dev, flags, fmt, td); 151 152 d = (struct fw_drv1 *)sc->si_drv1; 153 fc = d->fc; 154 155 /* remove binding */ 156 for (fwb = STAILQ_FIRST(&d->binds); fwb != NULL; 157 fwb = STAILQ_FIRST(&d->binds)) { 158 fw_bindremove(fc, fwb); 159 STAILQ_REMOVE_HEAD(&d->binds, chlist); 160 fw_xferlist_remove(&fwb->xferlist); 161 free(fwb, M_FW); 162 } 163 if (d->ir != NULL) { 164 struct fw_xferq *ir = d->ir; 165 166 if ((ir->flag & FWXFERQ_OPEN) == 0) 167 return EINVAL; 168 if (ir->flag & FWXFERQ_RUNNING) { 169 ir->flag &= ~FWXFERQ_RUNNING; 170 fc->irx_disable(fc, ir->dmach); 171 } 172 /* free extbuf */ 173 fwdev_freebuf(ir); 174 /* drain receiving buffer */ 175 for (xfer = STAILQ_FIRST(&ir->q); xfer != NULL; 176 xfer = STAILQ_FIRST(&ir->q)) { 177 ir->queued--; 178 STAILQ_REMOVE_HEAD(&ir->q, link); 179 180 xfer->resp = 0; 181 fw_xfer_done(xfer); 182 } 183 ir->flag &= 184 ~(FWXFERQ_OPEN | FWXFERQ_MODEMASK | FWXFERQ_CHTAGMASK); 185 d->ir = NULL; 186 187 } 188 if (d->it != NULL) { 189 struct fw_xferq *it = d->it; 190 191 if ((it->flag & FWXFERQ_OPEN) == 0) 192 return EINVAL; 193 if (it->flag & FWXFERQ_RUNNING) { 194 it->flag &= ~FWXFERQ_RUNNING; 195 fc->itx_disable(fc, it->dmach); 196 } 197 /* free extbuf */ 198 fwdev_freebuf(it); 199 it->flag &= 200 ~(FWXFERQ_OPEN | FWXFERQ_MODEMASK | FWXFERQ_CHTAGMASK); 201 d->it = NULL; 202 } 203 free(sc->si_drv1, M_FW); 204 sc->si_drv1 = NULL; 205 206 return err; 207 } 208 209 int 210 fw_read(dev_t dev, struct uio *uio, int ioflag) 211 { 212 struct firewire_softc *sc; 213 struct firewire_comm *fc; 214 struct fw_drv1 *d; 215 struct fw_xferq *ir; 216 struct fw_pkt *fp; 217 int err = 0, slept = 0; 218 219 sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev)); 220 if (sc == NULL) 221 return ENXIO; 222 223 if (DEV_FWMEM(dev)) 224 return physio(fw_strategy, NULL, dev, ioflag, minphys, uio); 225 226 d = (struct fw_drv1 *)sc->si_drv1; 227 fc = d->fc; 228 ir = d->ir; 229 230 if (ir == NULL) 231 return fw_read_async(d, uio, ioflag); 232 233 if (ir->buf == NULL) 234 return EIO; 235 236 mutex_enter(&fc->fc_mtx); 237 readloop: 238 if (ir->stproc == NULL) { 239 /* iso bulkxfer */ 240 ir->stproc = STAILQ_FIRST(&ir->stvalid); 241 if (ir->stproc != NULL) { 242 STAILQ_REMOVE_HEAD(&ir->stvalid, link); 243 ir->queued = 0; 244 } 245 } 246 if (ir->stproc == NULL) { 247 /* no data avaliable */ 248 if (slept == 0) { 249 slept = 1; 250 ir->flag |= FWXFERQ_WAKEUP; 251 err = tsleep(ir, FWPRI, "fw_read", hz); 252 ir->flag &= ~FWXFERQ_WAKEUP; 253 if (err == 0) 254 goto readloop; 255 } else if (slept == 1) 256 err = EIO; 257 mutex_exit(&fc->fc_mtx); 258 return err; 259 } else if (ir->stproc != NULL) { 260 /* iso bulkxfer */ 261 mutex_exit(&fc->fc_mtx); 262 fp = (struct fw_pkt *)fwdma_v_addr(ir->buf, 263 ir->stproc->poffset + ir->queued); 264 if (fc->irx_post != NULL) 265 fc->irx_post(fc, fp->mode.ld); 266 if (fp->mode.stream.len == 0) 267 return EIO; 268 err = uiomove((void *)fp, 269 fp->mode.stream.len + sizeof(uint32_t), uio); 270 ir->queued++; 271 if (ir->queued >= ir->bnpacket) { 272 STAILQ_INSERT_TAIL(&ir->stfree, ir->stproc, link); 273 fc->irx_enable(fc, ir->dmach); 274 ir->stproc = NULL; 275 } 276 if (uio->uio_resid >= ir->psize) { 277 slept = -1; 278 mutex_enter(&fc->fc_mtx); 279 goto readloop; 280 } 281 } else 282 mutex_exit(&fc->fc_mtx); 283 return err; 284 } 285 286 int 287 fw_write(dev_t dev, struct uio *uio, int ioflag) 288 { 289 struct firewire_softc *sc; 290 struct firewire_comm *fc; 291 struct fw_drv1 *d; 292 struct fw_pkt *fp; 293 struct fw_xferq *it; 294 int slept = 0, err = 0; 295 296 sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev)); 297 if (sc == NULL) 298 return ENXIO; 299 300 if (DEV_FWMEM(dev)) 301 return physio(fw_strategy, NULL, dev, ioflag, minphys, uio); 302 303 d = (struct fw_drv1 *)sc->si_drv1; 304 fc = d->fc; 305 it = d->it; 306 307 if (it == NULL) 308 return fw_write_async(d, uio, ioflag); 309 310 if (it->buf == NULL) 311 return EIO; 312 313 mutex_enter(&fc->fc_mtx); 314 isoloop: 315 if (it->stproc == NULL) { 316 it->stproc = STAILQ_FIRST(&it->stfree); 317 if (it->stproc != NULL) { 318 STAILQ_REMOVE_HEAD(&it->stfree, link); 319 it->queued = 0; 320 } else if (slept == 0) { 321 slept = 1; 322 #if 0 /* XXX to avoid lock recursion */ 323 err = fc->itx_enable(fc, it->dmach); 324 if (err) 325 goto out; 326 #endif 327 err = tsleep(it, FWPRI, "fw_write", hz); 328 if (err) 329 goto out; 330 goto isoloop; 331 } else { 332 err = EIO; 333 goto out; 334 } 335 } 336 mutex_exit(&fc->fc_mtx); 337 fp = (struct fw_pkt *)fwdma_v_addr(it->buf, 338 it->stproc->poffset + it->queued); 339 err = uiomove((void *)fp, sizeof(struct fw_isohdr), uio); 340 if (err != 0) 341 return err; 342 err = 343 uiomove((void *)fp->mode.stream.payload, fp->mode.stream.len, uio); 344 it->queued++; 345 if (it->queued >= it->bnpacket) { 346 STAILQ_INSERT_TAIL(&it->stvalid, it->stproc, link); 347 it->stproc = NULL; 348 err = fc->itx_enable(fc, it->dmach); 349 } 350 if (uio->uio_resid >= sizeof(struct fw_isohdr)) { 351 slept = 0; 352 mutex_enter(&fc->fc_mtx); 353 goto isoloop; 354 } 355 return err; 356 357 out: 358 mutex_exit(&fc->fc_mtx); 359 return err; 360 } 361 362 int 363 fw_ioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *td) 364 { 365 struct firewire_softc *sc; 366 struct firewire_comm *fc; 367 struct fw_drv1 *d; 368 struct fw_device *fwdev; 369 struct fw_bind *fwb; 370 struct fw_xferq *ir, *it; 371 struct fw_xfer *xfer; 372 struct fw_pkt *fp; 373 struct fw_devinfo *devinfo; 374 struct fw_devlstreq *fwdevlst = (struct fw_devlstreq *)data; 375 struct fw_asyreq *asyreq = (struct fw_asyreq *)data; 376 struct fw_isochreq *ichreq = (struct fw_isochreq *)data; 377 struct fw_isobufreq *ibufreq = (struct fw_isobufreq *)data; 378 struct fw_asybindreq *bindreq = (struct fw_asybindreq *)data; 379 struct fw_crom_buf *crom_buf = (struct fw_crom_buf *)data; 380 int i, len, err = 0; 381 void *ptr; 382 383 sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev)); 384 if (sc == NULL) 385 return ENXIO; 386 387 if (DEV_FWMEM(dev)) 388 return fwmem_ioctl(dev, cmd, data, flag, td); 389 390 if (!data) 391 return EINVAL; 392 393 d = (struct fw_drv1 *)sc->si_drv1; 394 fc = d->fc; 395 ir = d->ir; 396 it = d->it; 397 398 switch (cmd) { 399 case FW_STSTREAM: 400 if (it == NULL) { 401 i = fw_open_isodma(fc, /* tx */1); 402 if (i < 0) { 403 err = EBUSY; 404 break; 405 } 406 it = fc->it[i]; 407 err = fwdev_allocbuf(fc, it, &d->bufreq.tx); 408 if (err) { 409 it->flag &= ~FWXFERQ_OPEN; 410 break; 411 } 412 } 413 it->flag &= ~0xff; 414 it->flag |= (0x3f & ichreq->ch); 415 it->flag |= ((0x3 & ichreq->tag) << 6); 416 d->it = it; 417 break; 418 419 case FW_GTSTREAM: 420 if (it != NULL) { 421 ichreq->ch = it->flag & 0x3f; 422 ichreq->tag = it->flag >> 2 & 0x3; 423 } else 424 err = EINVAL; 425 break; 426 427 case FW_SRSTREAM: 428 if (ir == NULL) { 429 i = fw_open_isodma(fc, /* tx */0); 430 if (i < 0) { 431 err = EBUSY; 432 break; 433 } 434 ir = fc->ir[i]; 435 err = fwdev_allocbuf(fc, ir, &d->bufreq.rx); 436 if (err) { 437 ir->flag &= ~FWXFERQ_OPEN; 438 break; 439 } 440 } 441 ir->flag &= ~0xff; 442 ir->flag |= (0x3f & ichreq->ch); 443 ir->flag |= ((0x3 & ichreq->tag) << 6); 444 d->ir = ir; 445 err = fc->irx_enable(fc, ir->dmach); 446 break; 447 448 case FW_GRSTREAM: 449 if (d->ir != NULL) { 450 ichreq->ch = ir->flag & 0x3f; 451 ichreq->tag = ir->flag >> 2 & 0x3; 452 } else 453 err = EINVAL; 454 break; 455 456 case FW_SSTBUF: 457 memcpy(&d->bufreq, ibufreq, sizeof(d->bufreq)); 458 break; 459 460 case FW_GSTBUF: 461 memset(&ibufreq->rx, 0, sizeof(ibufreq->rx)); 462 if (ir != NULL) { 463 ibufreq->rx.nchunk = ir->bnchunk; 464 ibufreq->rx.npacket = ir->bnpacket; 465 ibufreq->rx.psize = ir->psize; 466 } 467 memset(&ibufreq->tx, 0, sizeof(ibufreq->tx)); 468 if (it != NULL) { 469 ibufreq->tx.nchunk = it->bnchunk; 470 ibufreq->tx.npacket = it->bnpacket; 471 ibufreq->tx.psize = it->psize; 472 } 473 break; 474 475 case FW_ASYREQ: 476 { 477 const struct tcode_info *tinfo; 478 int pay_len = 0; 479 480 fp = &asyreq->pkt; 481 tinfo = &fc->tcode[fp->mode.hdr.tcode]; 482 483 if ((tinfo->flag & FWTI_BLOCK_ASY) != 0) 484 pay_len = MAX(0, asyreq->req.len - tinfo->hdr_len); 485 486 xfer = fw_xfer_alloc_buf(M_FWXFER, pay_len, PAGE_SIZE/*XXX*/); 487 if (xfer == NULL) 488 return ENOMEM; 489 490 switch (asyreq->req.type) { 491 case FWASREQNODE: 492 break; 493 494 case FWASREQEUI: 495 fwdev = fw_noderesolve_eui64(fc, &asyreq->req.dst.eui); 496 if (fwdev == NULL) { 497 aprint_error_dev(fc->bdev, 498 "cannot find node\n"); 499 err = EINVAL; 500 goto out; 501 } 502 fp->mode.hdr.dst = FWLOCALBUS | fwdev->dst; 503 break; 504 505 case FWASRESTL: 506 /* XXX what's this? */ 507 break; 508 509 case FWASREQSTREAM: 510 /* nothing to do */ 511 break; 512 } 513 514 memcpy((void *)&xfer->send.hdr, fp, tinfo->hdr_len); 515 if (pay_len > 0) 516 memcpy((void *)xfer->send.payload, 517 (char *)fp + tinfo->hdr_len, pay_len); 518 xfer->send.spd = asyreq->req.sped; 519 xfer->hand = fw_xferwake; 520 521 if ((err = fw_asyreq(fc, -1, xfer)) != 0) 522 goto out; 523 if ((err = fw_xferwait(xfer)) != 0) 524 goto out; 525 if (xfer->resp != 0) { 526 err = EIO; 527 goto out; 528 } 529 if ((tinfo->flag & FWTI_TLABEL) == 0) 530 goto out; 531 532 /* copy response */ 533 tinfo = &fc->tcode[xfer->recv.hdr.mode.hdr.tcode]; 534 if (xfer->recv.hdr.mode.hdr.tcode == FWTCODE_RRESB || 535 xfer->recv.hdr.mode.hdr.tcode == FWTCODE_LRES) { 536 pay_len = xfer->recv.pay_len; 537 if (asyreq->req.len >= 538 xfer->recv.pay_len + tinfo->hdr_len) 539 asyreq->req.len = 540 xfer->recv.pay_len + tinfo->hdr_len; 541 else { 542 err = EINVAL; 543 pay_len = 0; 544 } 545 } else 546 pay_len = 0; 547 memcpy(fp, &xfer->recv.hdr, tinfo->hdr_len); 548 memcpy((char *)fp + tinfo->hdr_len, xfer->recv.payload, 549 pay_len); 550 out: 551 fw_xfer_free_buf(xfer); 552 break; 553 } 554 555 case FW_IBUSRST: 556 fc->ibr(fc); 557 break; 558 559 case FW_CBINDADDR: 560 fwb = fw_bindlookup(fc, bindreq->start.hi, bindreq->start.lo); 561 if (fwb == NULL) { 562 err = EINVAL; 563 break; 564 } 565 fw_bindremove(fc, fwb); 566 STAILQ_REMOVE(&d->binds, fwb, fw_bind, chlist); 567 fw_xferlist_remove(&fwb->xferlist); 568 free(fwb, M_FW); 569 break; 570 571 case FW_SBINDADDR: 572 if (bindreq->len <= 0 ) { 573 err = EINVAL; 574 break; 575 } 576 if (bindreq->start.hi > 0xffff ) { 577 err = EINVAL; 578 break; 579 } 580 fwb = (struct fw_bind *)malloc(sizeof(struct fw_bind), 581 M_FW, M_WAITOK); 582 if (fwb == NULL) { 583 err = ENOMEM; 584 break; 585 } 586 fwb->start = ((u_int64_t)bindreq->start.hi << 32) | 587 bindreq->start.lo; 588 fwb->end = fwb->start + bindreq->len; 589 fwb->sc = (void *)d; 590 STAILQ_INIT(&fwb->xferlist); 591 err = fw_bindadd(fc, fwb); 592 if (err == 0) { 593 fw_xferlist_add(&fwb->xferlist, M_FWXFER, 594 /* XXX */ 595 PAGE_SIZE, PAGE_SIZE, 5, fc, (void *)fwb, fw_hand); 596 STAILQ_INSERT_TAIL(&d->binds, fwb, chlist); 597 } 598 break; 599 600 case FW_GDEVLST: 601 i = len = 1; 602 /* myself */ 603 devinfo = fwdevlst->dev; 604 devinfo->dst = fc->nodeid; 605 devinfo->status = 0; /* XXX */ 606 devinfo->eui.hi = fc->eui.hi; 607 devinfo->eui.lo = fc->eui.lo; 608 STAILQ_FOREACH(fwdev, &fc->devices, link) { 609 if (len < FW_MAX_DEVLST) { 610 devinfo = &fwdevlst->dev[len++]; 611 devinfo->dst = fwdev->dst; 612 devinfo->status = 613 (fwdev->status == FWDEVINVAL) ? 0 : 1; 614 devinfo->eui.hi = fwdev->eui.hi; 615 devinfo->eui.lo = fwdev->eui.lo; 616 } 617 i++; 618 } 619 fwdevlst->n = i; 620 fwdevlst->info_len = len; 621 break; 622 623 case FW_GTPMAP: 624 memcpy(data, fc->topology_map, 625 (fc->topology_map->crc_len + 1) * 4); 626 break; 627 628 case FW_GCROM: 629 STAILQ_FOREACH(fwdev, &fc->devices, link) 630 if (FW_EUI64_EQUAL(fwdev->eui, crom_buf->eui)) 631 break; 632 if (fwdev == NULL) { 633 if (!FW_EUI64_EQUAL(fc->eui, crom_buf->eui)) { 634 err = FWNODE_INVAL; 635 break; 636 } 637 /* myself */ 638 ptr = malloc(CROMSIZE, M_FW, M_WAITOK); 639 len = CROMSIZE; 640 for (i = 0; i < CROMSIZE/4; i++) 641 ((uint32_t *)ptr)[i] = ntohl(fc->config_rom[i]); 642 } else { 643 /* found */ 644 ptr = (void *)fwdev->csrrom; 645 if (fwdev->rommax < CSRROMOFF) 646 len = 0; 647 else 648 len = fwdev->rommax - CSRROMOFF + 4; 649 } 650 if (crom_buf->len < len) 651 len = crom_buf->len; 652 else 653 crom_buf->len = len; 654 err = copyout(ptr, crom_buf->ptr, len); 655 if (fwdev == NULL) 656 /* myself */ 657 free(ptr, M_FW); 658 break; 659 660 default: 661 fc->ioctl(dev, cmd, data, flag, td); 662 break; 663 } 664 return err; 665 } 666 667 int 668 fw_poll(dev_t dev, int events, struct lwp *td) 669 { 670 struct firewire_softc *sc; 671 struct fw_xferq *ir; 672 int revents, tmp; 673 674 sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev)); 675 if (sc == NULL) 676 return ENXIO; 677 678 ir = ((struct fw_drv1 *)sc->si_drv1)->ir; 679 revents = 0; 680 tmp = POLLIN | POLLRDNORM; 681 if (events & tmp) { 682 if (STAILQ_FIRST(&ir->q) != NULL) 683 revents |= tmp; 684 else 685 selrecord(td, &ir->rsel); 686 } 687 tmp = POLLOUT | POLLWRNORM; 688 if (events & tmp) 689 /* XXX should be fixed */ 690 revents |= tmp; 691 692 return revents; 693 } 694 695 paddr_t 696 fw_mmap(dev_t dev, off_t offset, int nproto) 697 { 698 struct firewire_softc *sc; 699 700 sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev)); 701 if (sc == NULL) 702 return ENXIO; 703 704 return EINVAL; 705 } 706 707 void 708 fw_strategy(struct bio *bp) 709 { 710 struct firewire_softc *sc; 711 dev_t dev = bp->bio_dev; 712 713 sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev)); 714 if (sc == NULL) 715 return; 716 717 if (DEV_FWMEM(dev)) { 718 fwmem_strategy(bp); 719 return; 720 } 721 722 bp->bio_error = EOPNOTSUPP; 723 bp->bio_resid = bp->bio_bcount; 724 biodone(bp); 725 } 726 727 728 static int 729 fwdev_allocbuf(struct firewire_comm *fc, struct fw_xferq *q, 730 struct fw_bufspec *b) 731 { 732 int i; 733 734 if (q->flag & (FWXFERQ_RUNNING | FWXFERQ_EXTBUF)) 735 return EBUSY; 736 737 q->bulkxfer = 738 (struct fw_bulkxfer *)malloc(sizeof(struct fw_bulkxfer) * b->nchunk, 739 M_FW, M_WAITOK); 740 if (q->bulkxfer == NULL) 741 return ENOMEM; 742 743 b->psize = roundup2(b->psize, sizeof(uint32_t)); 744 q->buf = fwdma_malloc_multiseg(fc, sizeof(uint32_t), b->psize, 745 b->nchunk * b->npacket, BUS_DMA_WAITOK); 746 747 if (q->buf == NULL) { 748 free(q->bulkxfer, M_FW); 749 q->bulkxfer = NULL; 750 return ENOMEM; 751 } 752 q->bnchunk = b->nchunk; 753 q->bnpacket = b->npacket; 754 q->psize = (b->psize + 3) & ~3; 755 q->queued = 0; 756 757 STAILQ_INIT(&q->stvalid); 758 STAILQ_INIT(&q->stfree); 759 STAILQ_INIT(&q->stdma); 760 q->stproc = NULL; 761 762 for (i = 0 ; i < q->bnchunk; i++) { 763 q->bulkxfer[i].poffset = i * q->bnpacket; 764 q->bulkxfer[i].mbuf = NULL; 765 STAILQ_INSERT_TAIL(&q->stfree, &q->bulkxfer[i], link); 766 } 767 768 q->flag &= ~FWXFERQ_MODEMASK; 769 q->flag |= FWXFERQ_STREAM; 770 q->flag |= FWXFERQ_EXTBUF; 771 772 return 0; 773 } 774 775 static int 776 fwdev_freebuf(struct fw_xferq *q) 777 { 778 779 if (q->flag & FWXFERQ_EXTBUF) { 780 if (q->buf != NULL) 781 fwdma_free_multiseg(q->buf); 782 q->buf = NULL; 783 free(q->bulkxfer, M_FW); 784 q->bulkxfer = NULL; 785 q->flag &= ~FWXFERQ_EXTBUF; 786 q->psize = 0; 787 q->maxq = FWMAXQUEUE; 788 } 789 return 0; 790 } 791 792 static int 793 fw_read_async(struct fw_drv1 *d, struct uio *uio, int ioflag) 794 { 795 struct fw_xfer *xfer; 796 struct fw_bind *fwb; 797 struct fw_pkt *fp; 798 const struct tcode_info *tinfo; 799 int err = 0; 800 801 mutex_enter(&d->fc->fc_mtx); 802 while ((xfer = STAILQ_FIRST(&d->rq)) == NULL && err == 0) 803 err = tsleep(&d->rq, FWPRI, "fwra", 0); 804 805 if (err != 0) { 806 mutex_exit(&d->fc->fc_mtx); 807 return err; 808 } 809 810 STAILQ_REMOVE_HEAD(&d->rq, link); 811 mutex_exit(&d->fc->fc_mtx); 812 fp = &xfer->recv.hdr; 813 #if 0 /* for GASP ?? */ 814 if (fc->irx_post != NULL) 815 fc->irx_post(fc, fp->mode.ld); 816 #endif 817 tinfo = &xfer->fc->tcode[fp->mode.hdr.tcode]; 818 err = uiomove((void *)fp, tinfo->hdr_len, uio); 819 if (err) 820 goto out; 821 err = uiomove((void *)xfer->recv.payload, xfer->recv.pay_len, uio); 822 823 out: 824 /* recycle this xfer */ 825 fwb = (struct fw_bind *)xfer->sc; 826 fw_xfer_unload(xfer); 827 xfer->recv.pay_len = PAGE_SIZE; 828 mutex_enter(&d->fc->fc_mtx); 829 STAILQ_INSERT_TAIL(&fwb->xferlist, xfer, link); 830 mutex_exit(&d->fc->fc_mtx); 831 return err; 832 } 833 834 static int 835 fw_write_async(struct fw_drv1 *d, struct uio *uio, int ioflag) 836 { 837 struct fw_xfer *xfer; 838 struct fw_pkt pkt; 839 const struct tcode_info *tinfo; 840 int err; 841 842 memset(&pkt, 0, sizeof(struct fw_pkt)); 843 if ((err = uiomove((void *)&pkt, sizeof(uint32_t), uio))) 844 return err; 845 tinfo = &d->fc->tcode[pkt.mode.hdr.tcode]; 846 if ((err = uiomove((char *)&pkt + sizeof(uint32_t), 847 tinfo->hdr_len - sizeof(uint32_t), uio))) 848 return err; 849 850 if ((xfer = fw_xfer_alloc_buf(M_FWXFER, uio->uio_resid, 851 PAGE_SIZE/*XXX*/)) == NULL) 852 return ENOMEM; 853 854 memcpy(&xfer->send.hdr, &pkt, sizeof(struct fw_pkt)); 855 xfer->send.pay_len = uio->uio_resid; 856 if (uio->uio_resid > 0) { 857 if ((err = 858 uiomove((void *)xfer->send.payload, uio->uio_resid, uio))) 859 goto out; 860 } 861 862 xfer->fc = d->fc; 863 xfer->sc = NULL; 864 xfer->hand = fw_xferwake; 865 xfer->send.spd = 2 /* XXX */; 866 867 if ((err = fw_asyreq(xfer->fc, -1, xfer))) 868 goto out; 869 870 if ((err = fw_xferwait(xfer))) 871 goto out; 872 873 if (xfer->resp != 0) { 874 err = xfer->resp; 875 goto out; 876 } 877 878 if (xfer->flag == FWXF_RCVD) { 879 mutex_enter(&xfer->fc->fc_mtx); 880 STAILQ_INSERT_TAIL(&d->rq, xfer, link); 881 mutex_exit(&xfer->fc->fc_mtx); 882 return 0; 883 } 884 885 out: 886 fw_xfer_free(xfer); 887 return err; 888 } 889 890 static void 891 fw_hand(struct fw_xfer *xfer) 892 { 893 struct fw_bind *fwb; 894 struct fw_drv1 *d; 895 896 fwb = (struct fw_bind *)xfer->sc; 897 d = (struct fw_drv1 *)fwb->sc; 898 mutex_enter(&xfer->fc->fc_mtx); 899 STAILQ_INSERT_TAIL(&d->rq, xfer, link); 900 mutex_exit(&xfer->fc->fc_mtx); 901 wakeup(&d->rq); 902 } 903
Indexes created Fri Sep 26 20:09:58 GMT 2025