sys/dev/firewire/fwdev.c

   1 /*-
   2  * Copyright (c) 2003 Hidetoshi Shimokawa
   3  * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the acknowledgement as bellow:
  16  *
  17  *    This product includes software developed by K. Kobayashi and H. Shimokawa
  18  *
  19  * 4. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  25  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  26  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  30  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  * $FreeBSD$
  35  *
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/types.h>
  41 #include <sys/mbuf.h>
  42 #include <sys/bio.h>
  43
  44 #include <sys/kernel.h>
  45 #include <sys/malloc.h>
  46 #include <sys/conf.h>
  47 #include <sys/poll.h>
  48
  49 #include <sys/bus.h>
  50 #include <sys/ctype.h>
  51 #include <machine/bus.h>
  52
  53 #include <sys/ioccom.h>
  54
  55 #include <dev/firewire/firewire.h>
  56 #include <dev/firewire/firewirereg.h>
  57 #include <dev/firewire/fwdma.h>
  58 #include <dev/firewire/fwmem.h>
  59 #include <dev/firewire/iec68113.h>
  60
  61 #define FWNODE_INVAL 0xffff
  62
  63 static  d_open_t        fw_open;
  64 static  d_close_t       fw_close;
  65 static  d_ioctl_t       fw_ioctl;
  66 static  d_poll_t        fw_poll;
  67 static  d_read_t        fw_read;        /* for Isochronous packet */
  68 static  d_write_t       fw_write;
  69 static  d_mmap_t        fw_mmap;
  70 static  d_strategy_t    fw_strategy;
  71
  72 struct cdevsw firewire_cdevsw = {
  73         .d_version =    D_VERSION,
  74         .d_open =       fw_open,
  75         .d_close =      fw_close,
  76         .d_read =       fw_read,
  77         .d_write =      fw_write,
  78         .d_ioctl =      fw_ioctl,
  79         .d_poll =       fw_poll,
  80         .d_mmap =       fw_mmap,
  81         .d_strategy =   fw_strategy,
  82         .d_name =       "fw",
  83 };
  84
  85 struct fw_drv1 {
  86         struct firewire_comm *fc;
  87         struct fw_xferq *ir;
  88         struct fw_xferq *it;
  89         struct fw_isobufreq bufreq;
  90         STAILQ_HEAD(, fw_bind) binds;
  91         STAILQ_HEAD(, fw_xfer) rq;
  92 };
  93
  94 static int
  95 fwdev_allocbuf(struct firewire_comm *fc, struct fw_xferq *q,
  96         struct fw_bufspec *b)
  97 {
  98         int i;
  99
 100         if (q->flag & (FWXFERQ_RUNNING | FWXFERQ_EXTBUF))
 101                 return (EBUSY);
 102
 103         q->bulkxfer = malloc(sizeof(struct fw_bulkxfer) * b->nchunk,
 104             M_FW, M_WAITOK);
 105
 106         b->psize = roundup2(b->psize, sizeof(uint32_t));
 107         q->buf = fwdma_malloc_multiseg(fc, sizeof(uint32_t),
 108             b->psize, b->nchunk * b->npacket, BUS_DMA_WAITOK);
 109
 110         if (q->buf == NULL) {
 111                 free(q->bulkxfer, M_FW);
 112                 q->bulkxfer = NULL;
 113                 return (ENOMEM);
 114         }
 115         q->bnchunk = b->nchunk;
 116         q->bnpacket = b->npacket;
 117         q->psize = (b->psize + 3) & ~3;
 118         q->queued = 0;
 119
 120         STAILQ_INIT(&q->stvalid);
 121         STAILQ_INIT(&q->stfree);
 122         STAILQ_INIT(&q->stdma);
 123         q->stproc = NULL;
 124
 125         for (i = 0; i < q->bnchunk; i++) {
 126                 q->bulkxfer[i].poffset = i * q->bnpacket;
 127                 q->bulkxfer[i].mbuf = NULL;
 128                 STAILQ_INSERT_TAIL(&q->stfree, &q->bulkxfer[i], link);
 129         }
 130
 131         q->flag &= ~FWXFERQ_MODEMASK;
 132         q->flag |= FWXFERQ_STREAM;
 133         q->flag |= FWXFERQ_EXTBUF;
 134
 135         return (0);
 136 }
 137
 138 static int
 139 fwdev_freebuf(struct fw_xferq *q)
 140 {
 141         if (q->flag & FWXFERQ_EXTBUF) {
 142                 if (q->buf != NULL)
 143                         fwdma_free_multiseg(q->buf);
 144                 q->buf = NULL;
 145                 free(q->bulkxfer, M_FW);
 146                 q->bulkxfer = NULL;
 147                 q->flag &= ~FWXFERQ_EXTBUF;
 148                 q->psize = 0;
 149                 q->maxq = FWMAXQUEUE;
 150         }
 151         return (0);
 152 }
 153
 154
 155 static int
 156 fw_open(struct cdev *dev, int flags, int fmt, fw_proc *td)
 157 {
 158         int err = 0;
 159         int unit = DEV2UNIT(dev);
 160         struct fw_drv1 *d;
 161         struct firewire_softc *sc;
 162
 163         if (DEV_FWMEM(dev))
 164                 return fwmem_open(dev, flags, fmt, td);
 165
 166         sc = devclass_get_softc(firewire_devclass, unit);
 167         if (sc == NULL)
 168                 return (ENXIO);
 169
 170         FW_GLOCK(sc->fc);
 171         if (dev->si_drv1 != NULL) {
 172                 FW_GUNLOCK(sc->fc);
 173                 return (EBUSY);
 174         }
 175         /* set dummy value for allocation */
 176         dev->si_drv1 = (void *)-1;
 177         FW_GUNLOCK(sc->fc);
 178
 179         dev->si_drv1 = malloc(sizeof(struct fw_drv1), M_FW, M_WAITOK | M_ZERO);
 180
 181         if ((dev->si_flags & SI_NAMED) == 0) {
 182                 int unit = DEV2UNIT(dev);
 183                 int sub = DEV2SUB(dev);
 184
 185                 make_dev(&firewire_cdevsw, dev2unit(dev),
 186                     UID_ROOT, GID_OPERATOR, 0660, "fw%d.%d", unit, sub);
 187         }
 188
 189         d = dev->si_drv1;
 190         d->fc = sc->fc;
 191         STAILQ_INIT(&d->binds);
 192         STAILQ_INIT(&d->rq);
 193
 194         return err;
 195 }
 196
 197 static int
 198 fw_close(struct cdev *dev, int flags, int fmt, fw_proc *td)
 199 {
 200         struct firewire_comm *fc;
 201         struct fw_drv1 *d;
 202         struct fw_xfer *xfer;
 203         struct fw_bind *fwb;
 204         int err = 0;
 205
 206         if (DEV_FWMEM(dev))
 207                 return fwmem_close(dev, flags, fmt, td);
 208
 209         d = dev->si_drv1;
 210         fc = d->fc;
 211
 212         /* remove binding */
 213         for (fwb = STAILQ_FIRST(&d->binds); fwb != NULL;
 214             fwb = STAILQ_FIRST(&d->binds)) {
 215                 fw_bindremove(fc, fwb);
 216                 STAILQ_REMOVE_HEAD(&d->binds, chlist);
 217                 fw_xferlist_remove(&fwb->xferlist);
 218                 free(fwb, M_FW);
 219         }
 220         if (d->ir != NULL) {
 221                 struct fw_xferq *ir = d->ir;
 222
 223                 if ((ir->flag & FWXFERQ_OPEN) == 0)
 224                         return (EINVAL);
 225                 if (ir->flag & FWXFERQ_RUNNING) {
 226                         ir->flag &= ~FWXFERQ_RUNNING;
 227                         fc->irx_disable(fc, ir->dmach);
 228                 }
 229                 /* free extbuf */
 230                 fwdev_freebuf(ir);
 231                 /* drain receiving buffer */
 232                 for (xfer = STAILQ_FIRST(&ir->q);
 233                     xfer != NULL; xfer = STAILQ_FIRST(&ir->q)) {
 234                         ir->queued--;
 235                         STAILQ_REMOVE_HEAD(&ir->q, link);
 236
 237                         xfer->resp = 0;
 238                         fw_xfer_done(xfer);
 239                 }
 240                 ir->flag &= ~(FWXFERQ_OPEN | FWXFERQ_MODEMASK |
 241                     FWXFERQ_CHTAGMASK);
 242                 d->ir = NULL;
 243
 244         }
 245         if (d->it != NULL) {
 246                 struct fw_xferq *it = d->it;
 247
 248                 if ((it->flag & FWXFERQ_OPEN) == 0)
 249                         return (EINVAL);
 250                 if (it->flag & FWXFERQ_RUNNING) {
 251                         it->flag &= ~FWXFERQ_RUNNING;
 252                         fc->itx_disable(fc, it->dmach);
 253                 }
 254                 /* free extbuf */
 255                 fwdev_freebuf(it);
 256                 it->flag &= ~(FWXFERQ_OPEN |
 257                     FWXFERQ_MODEMASK | FWXFERQ_CHTAGMASK);
 258                 d->it = NULL;
 259         }
 260         free(dev->si_drv1, M_FW);
 261         dev->si_drv1 = NULL;
 262
 263         return err;
 264 }
 265
 266 static int
 267 fw_read_async(struct fw_drv1 *d, struct uio *uio, int ioflag)
 268 {
 269         int err = 0, s;
 270         struct fw_xfer *xfer;
 271         struct fw_bind *fwb;
 272         struct fw_pkt *fp;
 273         struct tcode_info *tinfo;
 274
 275         FW_GLOCK(d->fc);
 276         while ((xfer = STAILQ_FIRST(&d->rq)) == NULL && err == 0)
 277                 err = msleep(&d->rq, FW_GMTX(d->fc), FWPRI, "fwra", 0);
 278
 279         if (err != 0) {
 280                 FW_GUNLOCK(d->fc);
 281                 return (err);
 282         }
 283
 284         s = splfw();
 285         STAILQ_REMOVE_HEAD(&d->rq, link);
 286         FW_GUNLOCK(xfer->fc);
 287         splx(s);
 288         fp = &xfer->recv.hdr;
 289 #if 0 /* for GASP ?? */
 290         if (fc->irx_post != NULL)
 291                 fc->irx_post(fc, fp->mode.ld);
 292 #endif
 293         tinfo = &xfer->fc->tcode[fp->mode.hdr.tcode];
 294         err = uiomove(fp, tinfo->hdr_len, uio);
 295         if (err)
 296                 goto out;
 297         err = uiomove(xfer->recv.payload, xfer->recv.pay_len, uio);
 298
 299 out:
 300         /* recycle this xfer */
 301         fwb = (struct fw_bind *)xfer->sc;
 302         fw_xfer_unload(xfer);
 303         xfer->recv.pay_len = PAGE_SIZE;
 304         FW_GLOCK(xfer->fc);
 305         STAILQ_INSERT_TAIL(&fwb->xferlist, xfer, link);
 306         FW_GUNLOCK(xfer->fc);
 307         return (err);
 308 }
 309
 310 /*
 311  * read request.
 312  */
 313 static int
 314 fw_read(struct cdev *dev, struct uio *uio, int ioflag)
 315 {
 316         struct fw_drv1 *d;
 317         struct fw_xferq *ir;
 318         struct firewire_comm *fc;
 319         int err = 0, s, slept = 0;
 320         struct fw_pkt *fp;
 321
 322         if (DEV_FWMEM(dev))
 323                 return (physio(dev, uio, ioflag));
 324
 325         d = dev->si_drv1;
 326         fc = d->fc;
 327         ir = d->ir;
 328
 329         if (ir == NULL)
 330                 return (fw_read_async(d, uio, ioflag));
 331
 332         if (ir->buf == NULL)
 333                 return (EIO);
 334
 335         FW_GLOCK(fc);
 336 readloop:
 337         if (ir->stproc == NULL) {
 338                 /* iso bulkxfer */
 339                 ir->stproc = STAILQ_FIRST(&ir->stvalid);
 340                 if (ir->stproc != NULL) {
 341                         s = splfw();
 342                         STAILQ_REMOVE_HEAD(&ir->stvalid, link);
 343                         splx(s);
 344                         ir->queued = 0;
 345                 }
 346         }
 347         if (ir->stproc == NULL) {
 348                 /* no data available */
 349                 if (slept == 0) {
 350                         slept = 1;
 351                         ir->flag |= FWXFERQ_WAKEUP;
 352                         err = msleep(ir, FW_GMTX(fc), FWPRI, "fw_read", hz);
 353                         ir->flag &= ~FWXFERQ_WAKEUP;
 354                         if (err == 0)
 355                                 goto readloop;
 356                 } else if (slept == 1)
 357                         err = EIO;
 358                 FW_GUNLOCK(fc);
 359                 return err;
 360         } else if (ir->stproc != NULL) {
 361                 /* iso bulkxfer */
 362                 FW_GUNLOCK(fc);
 363                 fp = (struct fw_pkt *)fwdma_v_addr(ir->buf,
 364                     ir->stproc->poffset + ir->queued);
 365                 if (fc->irx_post != NULL)
 366                         fc->irx_post(fc, fp->mode.ld);
 367                 if (fp->mode.stream.len == 0) {
 368                         err = EIO;
 369                         return err;
 370                 }
 371                 err = uiomove((caddr_t)fp,
 372                         fp->mode.stream.len + sizeof(uint32_t), uio);
 373                 ir->queued++;
 374                 if (ir->queued >= ir->bnpacket) {
 375                         s = splfw();
 376                         STAILQ_INSERT_TAIL(&ir->stfree, ir->stproc, link);
 377                         splx(s);
 378                         fc->irx_enable(fc, ir->dmach);
 379                         ir->stproc = NULL;
 380                 }
 381                 if (uio->uio_resid >= ir->psize) {
 382                         slept = -1;
 383                         FW_GLOCK(fc);
 384                         goto readloop;
 385                 }
 386         }
 387         return err;
 388 }
 389
 390 static int
 391 fw_write_async(struct fw_drv1 *d, struct uio *uio, int ioflag)
 392 {
 393         struct fw_xfer *xfer;
 394         struct fw_pkt pkt;
 395         struct tcode_info *tinfo;
 396         int err;
 397
 398         bzero(&pkt, sizeof(struct fw_pkt));
 399         if ((err = uiomove((caddr_t)&pkt, sizeof(uint32_t), uio)))
 400                 return (err);
 401         tinfo = &d->fc->tcode[pkt.mode.hdr.tcode];
 402         if ((err = uiomove((caddr_t)&pkt + sizeof(uint32_t),
 403             tinfo->hdr_len - sizeof(uint32_t), uio)))
 404                 return (err);
 405
 406         if ((xfer = fw_xfer_alloc_buf(M_FWXFER, uio->uio_resid,
 407             PAGE_SIZE/*XXX*/)) == NULL)
 408                 return (ENOMEM);
 409
 410         bcopy(&pkt, &xfer->send.hdr, sizeof(struct fw_pkt));
 411         xfer->send.pay_len = uio->uio_resid;
 412         if (uio->uio_resid > 0) {
 413                 if ((err = uiomove((caddr_t)&xfer->send.payload[0],
 414                     uio->uio_resid, uio)))
 415                         goto out;
 416         }
 417
 418         xfer->fc = d->fc;
 419         xfer->sc = NULL;
 420         xfer->hand = fw_xferwake;
 421         xfer->send.spd = 2 /* XXX */;
 422
 423         if ((err = fw_asyreq(xfer->fc, -1, xfer)))
 424                 goto out;
 425
 426         if ((err = fw_xferwait(xfer)))
 427                 goto out;
 428
 429         if (xfer->resp != 0) {
 430                 err = xfer->resp;
 431                 goto out;
 432         }
 433
 434         if (xfer->flag & FWXF_RCVD) {
 435                 FW_GLOCK(xfer->fc);
 436                 STAILQ_INSERT_TAIL(&d->rq, xfer, link);
 437                 FW_GUNLOCK(xfer->fc);
 438                 return (0);
 439         }
 440
 441 out:
 442         fw_xfer_free(xfer);
 443         return (err);
 444 }
 445
 446 static int
 447 fw_write(struct cdev *dev, struct uio *uio, int ioflag)
 448 {
 449         int err = 0;
 450         int s, slept = 0;
 451         struct fw_drv1 *d;
 452         struct fw_pkt *fp;
 453         struct firewire_comm *fc;
 454         struct fw_xferq *it;
 455
 456         if (DEV_FWMEM(dev))
 457                 return (physio(dev, uio, ioflag));
 458
 459         d = dev->si_drv1;
 460         fc = d->fc;
 461         it = d->it;
 462
 463         if (it == NULL)
 464                 return (fw_write_async(d, uio, ioflag));
 465
 466         if (it->buf == NULL)
 467                 return (EIO);
 468
 469         FW_GLOCK(fc);
 470 isoloop:
 471         if (it->stproc == NULL) {
 472                 it->stproc = STAILQ_FIRST(&it->stfree);
 473                 if (it->stproc != NULL) {
 474                         s = splfw();
 475                         STAILQ_REMOVE_HEAD(&it->stfree, link);
 476                         splx(s);
 477                         it->queued = 0;
 478                 } else if (slept == 0) {
 479                         slept = 1;
 480 #if 0   /* XXX to avoid lock recursion */
 481                         err = fc->itx_enable(fc, it->dmach);
 482                         if (err)
 483                                 goto out;
 484 #endif
 485                         err = msleep(it, FW_GMTX(fc), FWPRI, "fw_write", hz);
 486                         if (err)
 487                                 goto out;
 488                         goto isoloop;
 489                 } else {
 490                         err = EIO;
 491                         goto out;
 492                 }
 493         }
 494         FW_GUNLOCK(fc);
 495         fp = (struct fw_pkt *)fwdma_v_addr(it->buf,
 496                         it->stproc->poffset + it->queued);
 497         err = uiomove((caddr_t)fp, sizeof(struct fw_isohdr), uio);
 498         err = uiomove((caddr_t)fp->mode.stream.payload,
 499                                 fp->mode.stream.len, uio);
 500         it->queued++;
 501         if (it->queued >= it->bnpacket) {
 502                 s = splfw();
 503                 STAILQ_INSERT_TAIL(&it->stvalid, it->stproc, link);
 504                 splx(s);
 505                 it->stproc = NULL;
 506                 err = fc->itx_enable(fc, it->dmach);
 507         }
 508         if (uio->uio_resid >= sizeof(struct fw_isohdr)) {
 509                 slept = 0;
 510                 FW_GLOCK(fc);
 511                 goto isoloop;
 512         }
 513         return err;
 514
 515 out:
 516         FW_GUNLOCK(fc);
 517         return err;
 518 }
 519
 520 static void
 521 fw_hand(struct fw_xfer *xfer)
 522 {
 523         struct fw_bind *fwb;
 524         struct fw_drv1 *d;
 525
 526         fwb = (struct fw_bind *)xfer->sc;
 527         d = fwb->sc;
 528         FW_GLOCK(xfer->fc);
 529         STAILQ_INSERT_TAIL(&d->rq, xfer, link);
 530         FW_GUNLOCK(xfer->fc);
 531         wakeup(&d->rq);
 532 }
 533
 534 /*
 535  * ioctl support.
 536  */
 537 int
 538 fw_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, fw_proc *td)
 539 {
 540         struct firewire_comm *fc;
 541         struct fw_drv1 *d;
 542         int i, len, err = 0;
 543         struct fw_device *fwdev;
 544         struct fw_bind *fwb;
 545         struct fw_xferq *ir, *it;
 546         struct fw_xfer *xfer;
 547         struct fw_pkt *fp;
 548         struct fw_devinfo *devinfo;
 549         void *ptr;
 550
 551         struct fw_devlstreq *fwdevlst = (struct fw_devlstreq *)data;
 552         struct fw_asyreq *asyreq = (struct fw_asyreq *)data;
 553         struct fw_isochreq *ichreq = (struct fw_isochreq *)data;
 554         struct fw_isobufreq *ibufreq = (struct fw_isobufreq *)data;
 555         struct fw_asybindreq *bindreq = (struct fw_asybindreq *)data;
 556         struct fw_crom_buf *crom_buf = (struct fw_crom_buf *)data;
 557
 558         if (DEV_FWMEM(dev))
 559                 return fwmem_ioctl(dev, cmd, data, flag, td);
 560
 561         if (!data)
 562                 return (EINVAL);
 563
 564         d = dev->si_drv1;
 565         fc = d->fc;
 566         ir = d->ir;
 567         it = d->it;
 568
 569         switch (cmd) {
 570         case FW_STSTREAM:
 571                 if (it == NULL) {
 572                         i = fw_open_isodma(fc, /* tx */1);
 573                         if (i < 0) {
 574                                 err = EBUSY;
 575                                 break;
 576                         }
 577                         it = fc->it[i];
 578                         err = fwdev_allocbuf(fc, it, &d->bufreq.tx);
 579                         if (err) {
 580                                 it->flag &= ~FWXFERQ_OPEN;
 581                                 break;
 582                         }
 583                 }
 584                 it->flag &= ~0xff;
 585                 it->flag |= (0x3f & ichreq->ch);
 586                 it->flag |= ((0x3 & ichreq->tag) << 6);
 587                 d->it = it;
 588                 break;
 589         case FW_GTSTREAM:
 590                 if (it != NULL) {
 591                         ichreq->ch = it->flag & 0x3f;
 592                         ichreq->tag = it->flag >> 2 & 0x3;
 593                 } else
 594                         err = EINVAL;
 595                 break;
 596         case FW_SRSTREAM:
 597                 if (ir == NULL) {
 598                         i = fw_open_isodma(fc, /* tx */0);
 599                         if (i < 0) {
 600                                 err = EBUSY;
 601                                 break;
 602                         }
 603                         ir = fc->ir[i];
 604                         err = fwdev_allocbuf(fc, ir, &d->bufreq.rx);
 605                         if (err) {
 606                                 ir->flag &= ~FWXFERQ_OPEN;
 607                                 break;
 608                         }
 609                 }
 610                 ir->flag &= ~0xff;
 611                 ir->flag |= (0x3f & ichreq->ch);
 612                 ir->flag |= ((0x3 & ichreq->tag) << 6);
 613                 d->ir = ir;
 614                 err = fc->irx_enable(fc, ir->dmach);
 615                 break;
 616         case FW_GRSTREAM:
 617                 if (d->ir != NULL) {
 618                         ichreq->ch = ir->flag & 0x3f;
 619                         ichreq->tag = ir->flag >> 2 & 0x3;
 620                 } else
 621                         err = EINVAL;
 622                 break;
 623         case FW_SSTBUF:
 624                 bcopy(ibufreq, &d->bufreq, sizeof(d->bufreq));
 625                 break;
 626         case FW_GSTBUF:
 627                 bzero(&ibufreq->rx, sizeof(ibufreq->rx));
 628                 if (ir != NULL) {
 629                         ibufreq->rx.nchunk = ir->bnchunk;
 630                         ibufreq->rx.npacket = ir->bnpacket;
 631                         ibufreq->rx.psize = ir->psize;
 632                 }
 633                 bzero(&ibufreq->tx, sizeof(ibufreq->tx));
 634                 if (it != NULL) {
 635                         ibufreq->tx.nchunk = it->bnchunk;
 636                         ibufreq->tx.npacket = it->bnpacket;
 637                         ibufreq->tx.psize = it->psize;
 638                 }
 639                 break;
 640         case FW_ASYREQ:
 641         {
 642                 struct tcode_info *tinfo;
 643                 int pay_len = 0;
 644
 645                 fp = &asyreq->pkt;
 646                 tinfo = &fc->tcode[fp->mode.hdr.tcode];
 647
 648                 if ((tinfo->flag & FWTI_BLOCK_ASY) != 0)
 649                         pay_len = MAX(0, asyreq->req.len - tinfo->hdr_len);
 650
 651                 xfer = fw_xfer_alloc_buf(M_FWXFER, pay_len, PAGE_SIZE/*XXX*/);
 652                 if (xfer == NULL)
 653                         return (ENOMEM);
 654
 655                 switch (asyreq->req.type) {
 656                 case FWASREQNODE:
 657                         break;
 658                 case FWASREQEUI:
 659                         fwdev = fw_noderesolve_eui64(fc,
 660                                                 &asyreq->req.dst.eui);
 661                         if (fwdev == NULL) {
 662                                 device_printf(fc->bdev,
 663                                         "cannot find node\n");
 664                                 err = EINVAL;
 665                                 goto out;
 666                         }
 667                         fp->mode.hdr.dst = FWLOCALBUS | fwdev->dst;
 668                         break;
 669                 case FWASRESTL:
 670                         /* XXX what's this? */
 671                         break;
 672                 case FWASREQSTREAM:
 673                         /* nothing to do */
 674                         break;
 675                 }
 676
 677                 bcopy(fp, (void *)&xfer->send.hdr, tinfo->hdr_len);
 678                 if (pay_len > 0)
 679                         bcopy((char *)fp + tinfo->hdr_len,
 680                             xfer->send.payload, pay_len);
 681                 xfer->send.spd = asyreq->req.sped;
 682                 xfer->hand = fw_xferwake;
 683
 684                 if ((err = fw_asyreq(fc, -1, xfer)) != 0)
 685                         goto out;
 686                 if ((err = fw_xferwait(xfer)) != 0)
 687                         goto out;
 688                 if (xfer->resp != 0) {
 689                         err = EIO;
 690                         goto out;
 691                 }
 692                 if ((tinfo->flag & FWTI_TLABEL) == 0)
 693                         goto out;
 694
 695                 /* copy response */
 696                 tinfo = &fc->tcode[xfer->recv.hdr.mode.hdr.tcode];
 697                 if (xfer->recv.hdr.mode.hdr.tcode == FWTCODE_RRESB ||
 698                     xfer->recv.hdr.mode.hdr.tcode == FWTCODE_LRES) {
 699                         pay_len = xfer->recv.pay_len;
 700                         if (asyreq->req.len >= xfer->recv.pay_len + tinfo->hdr_len) {
 701                                 asyreq->req.len = xfer->recv.pay_len +
 702                                     tinfo->hdr_len;
 703                         } else {
 704                                 err = EINVAL;
 705                                 pay_len = 0;
 706                         }
 707                 } else {
 708                         pay_len = 0;
 709                 }
 710                 bcopy(&xfer->recv.hdr, fp, tinfo->hdr_len);
 711                 bcopy(xfer->recv.payload, (char *)fp + tinfo->hdr_len, pay_len);
 712 out:
 713                 fw_xfer_free_buf(xfer);
 714                 break;
 715         }
 716         case FW_IBUSRST:
 717                 fc->ibr(fc);
 718                 break;
 719         case FW_CBINDADDR:
 720                 fwb = fw_bindlookup(fc,
 721                                 bindreq->start.hi, bindreq->start.lo);
 722                 if (fwb == NULL) {
 723                         err = EINVAL;
 724                         break;
 725                 }
 726                 fw_bindremove(fc, fwb);
 727                 STAILQ_REMOVE(&d->binds, fwb, fw_bind, chlist);
 728                 fw_xferlist_remove(&fwb->xferlist);
 729                 free(fwb, M_FW);
 730                 break;
 731         case FW_SBINDADDR:
 732                 if (bindreq->len <= 0) {
 733                         err = EINVAL;
 734                         break;
 735                 }
 736                 if (bindreq->start.hi > 0xffff) {
 737                         err = EINVAL;
 738                         break;
 739                 }
 740                 fwb = malloc(sizeof(struct fw_bind), M_FW, M_WAITOK);
 741                 fwb->start = ((u_int64_t)bindreq->start.hi << 32) |
 742                     bindreq->start.lo;
 743                 fwb->end = fwb->start +  bindreq->len;
 744                 fwb->sc = d;
 745                 STAILQ_INIT(&fwb->xferlist);
 746                 err = fw_bindadd(fc, fwb);
 747                 if (err == 0) {
 748                         fw_xferlist_add(&fwb->xferlist, M_FWXFER,
 749                             /* XXX */
 750                             PAGE_SIZE, PAGE_SIZE, 5,
 751                             fc, fwb, fw_hand);
 752                         STAILQ_INSERT_TAIL(&d->binds, fwb, chlist);
 753                 }
 754                 break;
 755         case FW_GDEVLST:
 756                 i = len = 1;
 757                 /* myself */
 758                 devinfo = &fwdevlst->dev[0];
 759                 devinfo->dst = fc->nodeid;
 760                 devinfo->status = 0;    /* XXX */
 761                 devinfo->eui.hi = fc->eui.hi;
 762                 devinfo->eui.lo = fc->eui.lo;
 763                 STAILQ_FOREACH(fwdev, &fc->devices, link) {
 764                         if (len < FW_MAX_DEVLST) {
 765                                 devinfo = &fwdevlst->dev[len++];
 766                                 devinfo->dst = fwdev->dst;
 767                                 devinfo->status =
 768                                         (fwdev->status == FWDEVINVAL) ? 0 : 1;
 769                                 devinfo->eui.hi = fwdev->eui.hi;
 770                                 devinfo->eui.lo = fwdev->eui.lo;
 771                         }
 772                         i++;
 773                 }
 774                 fwdevlst->n = i;
 775                 fwdevlst->info_len = len;
 776                 break;
 777         case FW_GTPMAP:
 778                 bcopy(fc->topology_map, data,
 779                     (fc->topology_map->crc_len + 1) * 4);
 780                 break;
 781         case FW_GCROM:
 782                 STAILQ_FOREACH(fwdev, &fc->devices, link)
 783                         if (FW_EUI64_EQUAL(fwdev->eui, crom_buf->eui))
 784                                 break;
 785                 if (fwdev == NULL) {
 786                         if (!FW_EUI64_EQUAL(fc->eui, crom_buf->eui)) {
 787                                 err = FWNODE_INVAL;
 788                                 break;
 789                         }
 790                         /* myself */
 791                         ptr = malloc(CROMSIZE, M_FW, M_WAITOK);
 792                         len = CROMSIZE;
 793                         for (i = 0; i < CROMSIZE/4; i++)
 794                                 ((uint32_t *)ptr)[i]
 795                                         = ntohl(fc->config_rom[i]);
 796                 } else {
 797                         /* found */
 798                         ptr = (void *)&fwdev->csrrom[0];
 799                         if (fwdev->rommax < CSRROMOFF)
 800                                 len = 0;
 801                         else
 802                                 len = fwdev->rommax - CSRROMOFF + 4;
 803                 }
 804                 if (crom_buf->len < len)
 805                         len = crom_buf->len;
 806                 else
 807                         crom_buf->len = len;
 808                 err = copyout(ptr, crom_buf->ptr, len);
 809                 if (fwdev == NULL)
 810                         /* myself */
 811                         free(ptr, M_FW);
 812                 break;
 813         default:
 814                 fc->ioctl(dev, cmd, data, flag, td);
 815                 break;
 816         }
 817         return err;
 818 }
 819 int
 820 fw_poll(struct cdev *dev, int events, fw_proc *td)
 821 {
 822         struct fw_xferq *ir;
 823         int revents;
 824         int tmp;
 825
 826         if (DEV_FWMEM(dev))
 827                 return fwmem_poll(dev, events, td);
 828
 829         ir = ((struct fw_drv1 *)dev->si_drv1)->ir;
 830         revents = 0;
 831         tmp = POLLIN | POLLRDNORM;
 832         if (events & tmp) {
 833                 if (STAILQ_FIRST(&ir->q) != NULL)
 834                         revents |= tmp;
 835                 else
 836                         selrecord(td, &ir->rsel);
 837         }
 838         tmp = POLLOUT | POLLWRNORM;
 839         if (events & tmp) {
 840                 /* XXX should be fixed */
 841                 revents |= tmp;
 842         }
 843
 844         return revents;
 845 }
 846
 847 static int
 848 fw_mmap (struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr,
 849     int nproto, vm_memattr_t *memattr)
 850 {
 851
 852         if (DEV_FWMEM(dev))
 853                 return fwmem_mmap(dev, offset, paddr, nproto, memattr);
 854
 855         return EINVAL;
 856 }
 857
 858 static void
 859 fw_strategy(struct bio *bp)
 860 {
 861         struct cdev *dev;
 862
 863         dev = bp->bio_dev;
 864         if (DEV_FWMEM(dev)) {
 865                 fwmem_strategy(bp);
 866                 return;
 867         }
 868
 869         bp->bio_error = EOPNOTSUPP;
 870         bp->bio_flags |= BIO_ERROR;
 871         bp->bio_resid = bp->bio_bcount;
 872         biodone(bp);
 873 }
 874
 875 int
 876 fwdev_makedev(struct firewire_softc *sc)
 877 {
 878         int err = 0;
 879
 880         struct cdev *d;
 881         int unit;
 882
 883         unit = device_get_unit(sc->fc->bdev);
 884         sc->dev = make_dev(&firewire_cdevsw, MAKEMINOR(0, unit, 0),
 885             UID_ROOT, GID_OPERATOR, 0660, "fw%d.%d", unit, 0);
 886         d = make_dev(&firewire_cdevsw, MAKEMINOR(FWMEM_FLAG, unit, 0),
 887             UID_ROOT, GID_OPERATOR, 0660, "fwmem%d.%d", unit, 0);
 888         dev_depends(sc->dev, d);
 889         make_dev_alias(sc->dev, "fw%d", unit);
 890         make_dev_alias(d, "fwmem%d", unit);
 891
 892         return (err);
 893 }
 894
 895 int
 896 fwdev_destroydev(struct firewire_softc *sc)
 897 {
 898         int err = 0;
 899
 900         destroy_dev(sc->dev);
 901         return (err);
 902 }
 903
 904 #define NDEVTYPE 2
 905 void
 906 fwdev_clone(void *arg, struct ucred *cred, char *name, int namelen,
 907     struct cdev **dev)
 908 {
 909         struct firewire_softc *sc;
 910         char *devnames[NDEVTYPE] = {"fw", "fwmem"};
 911         char *subp = NULL;
 912         int devflag[NDEVTYPE] = {0, FWMEM_FLAG};
 913         int i, unit = 0, sub = 0;
 914
 915         if (*dev != NULL)
 916                 return;
 917
 918         for (i = 0; i < NDEVTYPE; i++)
 919                 if (dev_stdclone(name, &subp, devnames[i], &unit) == 2)
 920                         goto found;
 921         /* not match */
 922         return;
 923 found:
 924
 925         if (subp == NULL || *subp++ != '.')
 926                 return;
 927
 928         /* /dev/fwU.S */
 929         while (isdigit(*subp)) {
 930                 sub *= 10;
 931                 sub += *subp++ - '0';
 932         }
 933         if (*subp != '\0')
 934                 return;
 935
 936         sc = devclass_get_softc(firewire_devclass, unit);
 937         if (sc == NULL)
 938                 return;
 939         *dev = make_dev_credf(MAKEDEV_REF, &firewire_cdevsw,
 940             MAKEMINOR(devflag[i], unit, sub), cred, UID_ROOT, GID_OPERATOR,
 941             0660, "%s%d.%d", devnames[i], unit, sub);
 942         dev_depends(sc->dev, *dev);
 943         return;
 944 }