sys/dev/ida/ida.c

   1 /*-
   2  * Copyright (c) 1999,2000 Jonathan Lemon
   3  * All rights reserved.
   4  *
   5  # Derived from the original IDA Compaq RAID driver, which is
   6  * Copyright (c) 1996, 1997, 1998, 1999
   7  *    Mark Dawson and David James. All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  */
  30
  31 #include <sys/cdefs.h>
  32 __FBSDID("$FreeBSD$");
  33
  34 /*
  35  * Generic driver for Compaq SMART RAID adapters.
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/kernel.h>
  40 #include <sys/systm.h>
  41 #include <sys/malloc.h>
  42 #include <sys/stat.h>
  43
  44 #include <sys/bio.h>
  45 #include <sys/bus.h>
  46 #include <sys/conf.h>
  47 #include <sys/endian.h>
  48
  49 #include <machine/bus_memio.h>
  50 #include <machine/bus_pio.h>
  51 #include <machine/bus.h>
  52 #include <sys/rman.h>
  53
  54 #include <geom/geom_disk.h>
  55
  56 #include <dev/ida/idareg.h>
  57 #include <dev/ida/idavar.h>
  58 #include <dev/ida/idaio.h>
  59
  60 /* prototypes */
  61 static void ida_alloc_qcb(struct ida_softc *ida);
  62 static void ida_construct_qcb(struct ida_softc *ida);
  63 static void ida_start(struct ida_softc *ida);
  64 static void ida_done(struct ida_softc *ida, struct ida_qcb *qcb);
  65 static int ida_wait(struct ida_softc *ida, struct ida_qcb *qcb);
  66 static void ida_timeout (void *arg);
  67
  68 static d_ioctl_t ida_ioctl;
  69 static struct cdevsw ida_cdevsw = {
  70         .d_version =    D_VERSION,
  71         .d_flags =      D_NEEDGIANT,
  72         .d_ioctl =      ida_ioctl,
  73         .d_name =       "ida",
  74 };
  75
  76 void
  77 ida_free(struct ida_softc *ida)
  78 {
  79         int i;
  80
  81         callout_stop(&ida->ch);
  82
  83         for (i = 0; i < ida->num_qcbs; i++)
  84                 bus_dmamap_destroy(ida->buffer_dmat, ida->qcbs[i].dmamap);
  85
  86         if (ida->hwqcb_busaddr)
  87                 bus_dmamap_unload(ida->hwqcb_dmat, ida->hwqcb_dmamap);
  88
  89         if (ida->hwqcbs)
  90                 bus_dmamem_free(ida->hwqcb_dmat, ida->hwqcbs,
  91                     ida->hwqcb_dmamap);
  92
  93         if (ida->buffer_dmat)
  94                 bus_dma_tag_destroy(ida->buffer_dmat);
  95
  96         if (ida->hwqcb_dmat)
  97                 bus_dma_tag_destroy(ida->hwqcb_dmat);
  98
  99         if (ida->qcbs != NULL)
 100                 free(ida->qcbs, M_DEVBUF);
 101
 102         if (ida->ih != NULL)
 103                 bus_teardown_intr(ida->dev, ida->irq, ida->ih);
 104
 105         if (ida->irq != NULL)
 106                 bus_release_resource(ida->dev, ida->irq_res_type,
 107                     0, ida->irq);
 108
 109         if (ida->parent_dmat != NULL)
 110                 bus_dma_tag_destroy(ida->parent_dmat);
 111
 112         if (ida->regs != NULL)
 113                 bus_release_resource(ida->dev, ida->regs_res_type,
 114                     ida->regs_res_id, ida->regs);
 115 }
 116
 117 /*
 118  * record bus address from bus_dmamap_load
 119  */
 120 static void
 121 ida_dma_map_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 122 {
 123         bus_addr_t *baddr;
 124
 125         baddr = (bus_addr_t *)arg;
 126         *baddr = segs->ds_addr;
 127 }
 128
 129 static __inline struct ida_qcb *
 130 ida_get_qcb(struct ida_softc *ida)
 131 {
 132         struct ida_qcb *qcb;
 133
 134         if ((qcb = SLIST_FIRST(&ida->free_qcbs)) != NULL) {
 135                 SLIST_REMOVE_HEAD(&ida->free_qcbs, link.sle);
 136         } else {
 137                 ida_alloc_qcb(ida);
 138                 if ((qcb = SLIST_FIRST(&ida->free_qcbs)) != NULL)
 139                         SLIST_REMOVE_HEAD(&ida->free_qcbs, link.sle);
 140         }
 141         return (qcb);
 142 }
 143
 144 static __inline bus_addr_t
 145 idahwqcbvtop(struct ida_softc *ida, struct ida_hardware_qcb *hwqcb)
 146 {
 147         return (ida->hwqcb_busaddr +
 148             ((bus_addr_t)hwqcb - (bus_addr_t)ida->hwqcbs));
 149 }
 150
 151 static __inline struct ida_qcb *
 152 idahwqcbptov(struct ida_softc *ida, bus_addr_t hwqcb_addr)
 153 {
 154         struct ida_hardware_qcb *hwqcb;
 155
 156         hwqcb = (struct ida_hardware_qcb *)
 157             ((bus_addr_t)ida->hwqcbs + (hwqcb_addr - ida->hwqcb_busaddr));
 158         return (hwqcb->qcb);
 159 }
 160
 161 /*
 162  * XXX
 163  * since we allocate all QCB space up front during initialization, then
 164  * why bother with this routine?
 165  */
 166 static void
 167 ida_alloc_qcb(struct ida_softc *ida)
 168 {
 169         struct ida_qcb *qcb;
 170         int error;
 171
 172         if (ida->num_qcbs >= IDA_QCB_MAX)
 173                 return;
 174
 175         qcb = &ida->qcbs[ida->num_qcbs];
 176
 177         error = bus_dmamap_create(ida->buffer_dmat, /*flags*/0, &qcb->dmamap);
 178         if (error != 0)
 179                 return;
 180
 181         qcb->flags = QCB_FREE;
 182         qcb->hwqcb = &ida->hwqcbs[ida->num_qcbs];
 183         qcb->hwqcb->qcb = qcb;
 184         qcb->hwqcb_busaddr = idahwqcbvtop(ida, qcb->hwqcb);
 185         SLIST_INSERT_HEAD(&ida->free_qcbs, qcb, link.sle);
 186         ida->num_qcbs++;
 187 }
 188
 189 int
 190 ida_init(struct ida_softc *ida)
 191 {
 192         int error;
 193
 194         ida->unit = device_get_unit(ida->dev);
 195         ida->tag = rman_get_bustag(ida->regs);
 196         ida->bsh = rman_get_bushandle(ida->regs);
 197
 198         SLIST_INIT(&ida->free_qcbs);
 199         STAILQ_INIT(&ida->qcb_queue);
 200         bioq_init(&ida->bio_queue);
 201
 202         ida->qcbs = (struct ida_qcb *)
 203             malloc(IDA_QCB_MAX * sizeof(struct ida_qcb), M_DEVBUF,
 204                 M_NOWAIT | M_ZERO);
 205         if (ida->qcbs == NULL)
 206                 return (ENOMEM);
 207
 208         /*
 209          * Create our DMA tags
 210          */
 211
 212         /* DMA tag for our hardware QCB structures */
 213         error = bus_dma_tag_create(
 214                 /* parent       */ ida->parent_dmat,
 215                 /* alignment    */ 1,
 216                 /* boundary     */ 0,
 217                 /* lowaddr      */ BUS_SPACE_MAXADDR,
 218                 /* highaddr     */ BUS_SPACE_MAXADDR,
 219                 /* filter       */ NULL,
 220                 /* filterarg    */ NULL,
 221                 /* maxsize      */ IDA_QCB_MAX * sizeof(struct ida_hardware_qcb),
 222                 /* nsegments    */ 1,
 223                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
 224                 /* flags        */ 0,
 225                 /* lockfunc     */ busdma_lock_mutex,
 226                 /* lockarg      */ &Giant,
 227                 &ida->hwqcb_dmat);
 228         if (error)
 229                 return (ENOMEM);
 230
 231         /* DMA tag for mapping buffers into device space */
 232         error = bus_dma_tag_create(
 233                 /* parent       */ ida->parent_dmat,
 234                 /* alignment    */ 1,
 235                 /* boundary     */ 0,
 236                 /* lowaddr      */ BUS_SPACE_MAXADDR,
 237                 /* highaddr     */ BUS_SPACE_MAXADDR,
 238                 /* filter       */ NULL,
 239                 /* filterarg    */ NULL,
 240                 /* maxsize      */ MAXBSIZE,
 241                 /* nsegments    */ IDA_NSEG,
 242                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
 243                 /* flags        */ 0,
 244                 /* lockfunc     */ busdma_lock_mutex,
 245                 /* lockarg      */ &Giant,
 246                 &ida->buffer_dmat);
 247         if (error)
 248                 return (ENOMEM);
 249
 250         /* Allocation of hardware QCBs */
 251         /* XXX allocation is rounded to hardware page size */
 252         error = bus_dmamem_alloc(ida->hwqcb_dmat,
 253             (void **)&ida->hwqcbs, BUS_DMA_NOWAIT, &ida->hwqcb_dmamap);
 254         if (error)
 255                 return (ENOMEM);
 256
 257         /* And permanently map them in */
 258         bus_dmamap_load(ida->hwqcb_dmat, ida->hwqcb_dmamap,
 259             ida->hwqcbs, IDA_QCB_MAX * sizeof(struct ida_hardware_qcb),
 260             ida_dma_map_cb, &ida->hwqcb_busaddr, /*flags*/0);
 261
 262         bzero(ida->hwqcbs, IDA_QCB_MAX * sizeof(struct ida_hardware_qcb));
 263
 264         ida_alloc_qcb(ida);             /* allocate an initial qcb */
 265
 266         callout_init(&ida->ch, CALLOUT_MPSAFE);
 267
 268         return (0);
 269 }
 270
 271 void
 272 ida_attach(struct ida_softc *ida)
 273 {
 274         struct ida_controller_info cinfo;
 275         int error, i;
 276
 277         ida->cmd.int_enable(ida, 0);
 278
 279         error = ida_command(ida, CMD_GET_CTRL_INFO, &cinfo, sizeof(cinfo),
 280             IDA_CONTROLLER, 0, DMA_DATA_IN);
 281         if (error) {
 282                 device_printf(ida->dev, "CMD_GET_CTRL_INFO failed.\n");
 283                 return;
 284         }
 285
 286         device_printf(ida->dev, "drives=%d firm_rev=%c%c%c%c\n",
 287             cinfo.num_drvs, cinfo.firm_rev[0], cinfo.firm_rev[1],
 288             cinfo.firm_rev[2], cinfo.firm_rev[3]);
 289
 290         if (ida->flags & IDA_FIRMWARE) {
 291                 int data;
 292
 293                 error = ida_command(ida, CMD_START_FIRMWARE,
 294                     &data, sizeof(data), IDA_CONTROLLER, 0, DMA_DATA_IN);
 295                 if (error) {
 296                         device_printf(ida->dev, "CMD_START_FIRMWARE failed.\n");
 297                         return;
 298                 }
 299         }
 300
 301         ida->ida_dev_t = make_dev(&ida_cdevsw, ida->unit,
 302                                  UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR,
 303                                  "ida%d", ida->unit);
 304         ida->ida_dev_t->si_drv1 = ida;
 305
 306         ida->num_drives = 0;
 307         for (i = 0; i < cinfo.num_drvs; i++)
 308                 device_add_child(ida->dev, /*"idad"*/NULL, -1);
 309
 310         bus_generic_attach(ida->dev);
 311
 312         ida->cmd.int_enable(ida, 1);
 313 }
 314
 315 int
 316 ida_detach(device_t dev)
 317 {
 318         struct ida_softc *ida;
 319         int error = 0;
 320
 321         ida = (struct ida_softc *)device_get_softc(dev);
 322
 323         /*
 324          * XXX
 325          * before detaching, we must make sure that the system is
 326          * quiescent; nothing mounted, no pending activity.
 327          */
 328
 329         /*
 330          * XXX
 331          * now, how are we supposed to maintain a list of our drives?
 332          * iterate over our "child devices"?
 333          */
 334
 335         destroy_dev(ida->ida_dev_t);
 336         ida_free(ida);
 337         return (error);
 338 }
 339
 340 static void
 341 ida_setup_dmamap(void *arg, bus_dma_segment_t *segs, int nsegments, int error)
 342 {
 343         struct ida_hardware_qcb *hwqcb = (struct ida_hardware_qcb *)arg;
 344         int i;
 345
 346         hwqcb->hdr.size = htole16((sizeof(struct ida_req) +
 347             sizeof(struct ida_sgb) * IDA_NSEG) >> 2);
 348
 349         for (i = 0; i < nsegments; i++) {
 350                 hwqcb->seg[i].addr = htole32(segs[i].ds_addr);
 351                 hwqcb->seg[i].length = htole32(segs[i].ds_len);
 352         }
 353         hwqcb->req.sgcount = nsegments;
 354 }
 355
 356 int
 357 ida_command(struct ida_softc *ida, int command, void *data, int datasize,
 358         int drive, u_int32_t pblkno, int flags)
 359 {
 360         struct ida_hardware_qcb *hwqcb;
 361         struct ida_qcb *qcb;
 362         bus_dmasync_op_t op;
 363         int s, error;
 364
 365         s = splbio();
 366         qcb = ida_get_qcb(ida);
 367         splx(s);
 368
 369         if (qcb == NULL) {
 370                 printf("ida_command: out of QCBs");
 371                 return (EAGAIN);
 372         }
 373
 374         hwqcb = qcb->hwqcb;
 375         bzero(hwqcb, sizeof(struct ida_hdr) + sizeof(struct ida_req));
 376
 377         bus_dmamap_load(ida->buffer_dmat, qcb->dmamap,
 378             (void *)data, datasize, ida_setup_dmamap, hwqcb, 0);
 379         op = qcb->flags & DMA_DATA_IN ?
 380             BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE;
 381         bus_dmamap_sync(ida->buffer_dmat, qcb->dmamap, op);
 382
 383         hwqcb->hdr.drive = drive;
 384         hwqcb->req.blkno = htole32(pblkno);
 385         hwqcb->req.bcount = htole16(howmany(datasize, DEV_BSIZE));
 386         hwqcb->req.command = command;
 387
 388         qcb->flags = flags | IDA_COMMAND;
 389
 390         s = splbio();
 391         STAILQ_INSERT_TAIL(&ida->qcb_queue, qcb, link.stqe);
 392         ida_start(ida);
 393         error = ida_wait(ida, qcb);
 394         splx(s);
 395
 396         /* XXX should have status returned here? */
 397         /* XXX have "status pointer" area in QCB? */
 398
 399         return (error);
 400 }
 401
 402 void
 403 ida_submit_buf(struct ida_softc *ida, struct bio *bp)
 404 {
 405         bioq_insert_tail(&ida->bio_queue, bp);
 406         ida_construct_qcb(ida);
 407         ida_start(ida);
 408 }
 409
 410 static void
 411 ida_construct_qcb(struct ida_softc *ida)
 412 {
 413         struct ida_hardware_qcb *hwqcb;
 414         struct ida_qcb *qcb;
 415         bus_dmasync_op_t op;
 416         struct bio *bp;
 417
 418         bp = bioq_first(&ida->bio_queue);
 419         if (bp == NULL)
 420                 return;                         /* no more buffers */
 421
 422         qcb = ida_get_qcb(ida);
 423         if (qcb == NULL)
 424                 return;                         /* out of resources */
 425
 426         bioq_remove(&ida->bio_queue, bp);
 427         qcb->buf = bp;
 428         qcb->flags = bp->bio_cmd == BIO_READ ? DMA_DATA_IN : DMA_DATA_OUT;
 429
 430         hwqcb = qcb->hwqcb;
 431         bzero(hwqcb, sizeof(struct ida_hdr) + sizeof(struct ida_req));
 432
 433         bus_dmamap_load(ida->buffer_dmat, qcb->dmamap,
 434             (void *)bp->bio_data, bp->bio_bcount, ida_setup_dmamap, hwqcb, 0);
 435         op = qcb->flags & DMA_DATA_IN ?
 436             BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE;
 437         bus_dmamap_sync(ida->buffer_dmat, qcb->dmamap, op);
 438
 439         {
 440                 struct idad_softc *drv = (struct idad_softc *)bp->bio_driver1;
 441                 hwqcb->hdr.drive = drv->drive;
 442         }
 443
 444         hwqcb->req.blkno = bp->bio_pblkno;
 445         hwqcb->req.bcount = howmany(bp->bio_bcount, DEV_BSIZE);
 446         hwqcb->req.command = bp->bio_cmd == BIO_READ ? CMD_READ : CMD_WRITE;
 447
 448         STAILQ_INSERT_TAIL(&ida->qcb_queue, qcb, link.stqe);
 449 }
 450
 451 /*
 452  * This routine will be called from ida_intr in order to queue up more
 453  * I/O, meaning that we may be in an interrupt context.  Hence, we should
 454  * not muck around with spl() in this routine.
 455  */
 456 static void
 457 ida_start(struct ida_softc *ida)
 458 {
 459         struct ida_qcb *qcb;
 460
 461         while ((qcb = STAILQ_FIRST(&ida->qcb_queue)) != NULL) {
 462                 if (ida->cmd.fifo_full(ida))
 463                         break;
 464                 STAILQ_REMOVE_HEAD(&ida->qcb_queue, link.stqe);
 465                 /*
 466                  * XXX
 467                  * place the qcb on an active list?
 468                  */
 469
 470                 /* Set a timeout. */
 471                 if (!ida->qactive)
 472                         callout_reset(&ida->ch, hz * 5, ida_timeout, ida);
 473                 ida->qactive++;
 474
 475                 qcb->state = QCB_ACTIVE;
 476                 ida->cmd.submit(ida, qcb);
 477         }
 478 }
 479
 480 static int
 481 ida_wait(struct ida_softc *ida, struct ida_qcb *qcb)
 482 {
 483         struct ida_qcb *qcb_done = NULL;
 484         bus_addr_t completed;
 485         int delay;
 486
 487         if (ida->flags & IDA_INTERRUPTS) {
 488                 if (tsleep(qcb, PRIBIO, "idacmd", 5 * hz))
 489                         return (ETIMEDOUT);
 490                 return (0);
 491         }
 492
 493 again:
 494         delay = 5 * 1000 * 100;                 /* 5 sec delay */
 495         while ((completed = ida->cmd.done(ida)) == 0) {
 496                 if (delay-- == 0)
 497                         return (ETIMEDOUT);
 498                 DELAY(10);
 499         }
 500
 501         qcb_done = idahwqcbptov(ida, completed & ~3);
 502         if (qcb_done != qcb)
 503                 goto again;
 504         ida_done(ida, qcb);
 505         return (0);
 506 }
 507
 508 void
 509 ida_intr(void *data)
 510 {
 511         struct ida_softc *ida;
 512         struct ida_qcb *qcb;
 513         bus_addr_t completed;
 514
 515         ida = (struct ida_softc *)data;
 516
 517         if (ida->cmd.int_pending(ida) == 0)
 518                 return;                         /* not our interrupt */
 519
 520         while ((completed = ida->cmd.done(ida)) != 0) {
 521                 qcb = idahwqcbptov(ida, completed & ~3);
 522
 523                 if (qcb == NULL || qcb->state != QCB_ACTIVE) {
 524                         device_printf(ida->dev,
 525                             "ignoring completion %jx\n", (intmax_t)completed);
 526                         continue;
 527                 }
 528                 /* Handle "Bad Command List" errors. */
 529                 if ((completed & 3) && (qcb->hwqcb->req.error == 0))
 530                         qcb->hwqcb->req.error = CMD_REJECTED;
 531                 ida_done(ida, qcb);
 532         }
 533         ida_start(ida);
 534 }
 535
 536 /*
 537  * should switch out command type; may be status, not just I/O.
 538  */
 539 static void
 540 ida_done(struct ida_softc *ida, struct ida_qcb *qcb)
 541 {
 542         int error = 0;
 543
 544         /*
 545          * finish up command
 546          */
 547         if (qcb->flags & DMA_DATA_TRANSFER) {
 548                 bus_dmasync_op_t op;
 549
 550                 op = qcb->flags & DMA_DATA_IN ?
 551                     BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE;
 552                 bus_dmamap_sync(ida->buffer_dmat, qcb->dmamap, op);
 553                 bus_dmamap_unload(ida->buffer_dmat, qcb->dmamap);
 554         }
 555
 556         if (qcb->hwqcb->req.error & SOFT_ERROR) {
 557                 if (qcb->buf)
 558                         device_printf(ida->dev, "soft %s error\n",
 559                                 qcb->buf->bio_cmd == BIO_READ ?
 560                                         "read" : "write");
 561                 else
 562                         device_printf(ida->dev, "soft error\n");
 563         }
 564         if (qcb->hwqcb->req.error & HARD_ERROR) {
 565                 error = 1;
 566                 if (qcb->buf)
 567                         device_printf(ida->dev, "hard %s error\n",
 568                                 qcb->buf->bio_cmd == BIO_READ ?
 569                                         "read" : "write");
 570                 else
 571                         device_printf(ida->dev, "hard error\n");
 572         }
 573         if (qcb->hwqcb->req.error & CMD_REJECTED) {
 574                 error = 1;
 575                 device_printf(ida->dev, "invalid request\n");
 576         }
 577
 578         if (qcb->flags & IDA_COMMAND) {
 579                 if (ida->flags & IDA_INTERRUPTS)
 580                         wakeup(qcb);
 581         } else {
 582                 if (error)
 583                         qcb->buf->bio_flags |= BIO_ERROR;
 584                 idad_intr(qcb->buf);
 585         }
 586
 587         ida->qactive--;
 588         /* Reschedule or cancel timeout */
 589         if (ida->qactive)
 590                 callout_reset(&ida->ch, hz * 5, ida_timeout, ida);
 591         else
 592                 callout_stop(&ida->ch);
 593
 594         qcb->state = QCB_FREE;
 595         qcb->buf = NULL;
 596         SLIST_INSERT_HEAD(&ida->free_qcbs, qcb, link.sle);
 597         ida_construct_qcb(ida);
 598 }
 599
 600 static void
 601 ida_timeout (void *arg)
 602 {
 603         struct ida_softc *ida;
 604
 605         ida = (struct ida_softc *)arg;
 606         device_printf(ida->dev, "%s() qactive %d\n", __func__, ida->qactive);
 607
 608         if (ida->flags & IDA_INTERRUPTS)
 609                 device_printf(ida->dev, "IDA_INTERRUPTS\n");
 610
 611         device_printf(ida->dev, "\t   R_CMD_FIFO: %08x\n"
 612                                 "\t  R_DONE_FIFO: %08x\n"
 613                                 "\t   R_INT_MASK: %08x\n"
 614                                 "\t     R_STATUS: %08x\n"
 615                                 "\tR_INT_PENDING: %08x\n",
 616                                         ida_inl(ida, R_CMD_FIFO),
 617                                         ida_inl(ida, R_DONE_FIFO),
 618                                         ida_inl(ida, R_INT_MASK),
 619                                         ida_inl(ida, R_STATUS),
 620                                         ida_inl(ida, R_INT_PENDING));
 621
 622         return;
 623 }
 624
 625 /*
 626  * IOCTL stuff follows.
 627  */
 628 struct cmd_info {
 629         int     cmd;
 630         int     len;
 631         int     flags;
 632 };
 633 static struct cmd_info *ida_cmd_lookup(int);
 634
 635 static int
 636 ida_ioctl (struct cdev *dev, u_long cmd, caddr_t addr, int32_t flag, struct thread *td)
 637 {
 638         struct ida_softc *sc;
 639         struct ida_user_command *uc;
 640         struct cmd_info *ci;
 641         int len;
 642         int flags;
 643         int error;
 644         int data;
 645         void *daddr;
 646
 647         sc = (struct ida_softc *)dev->si_drv1;
 648         uc = (struct ida_user_command *)addr;
 649         error = 0;
 650
 651         switch (cmd) {
 652         case IDAIO_COMMAND:
 653                 ci = ida_cmd_lookup(uc->command);
 654                 if (ci == NULL) {
 655                         error = EINVAL;
 656                         break;
 657                 }
 658                 len = ci->len;
 659                 flags = ci->flags;
 660                 if (len)
 661                         daddr = &uc->d.buf;
 662                 else {
 663                         daddr = &data;
 664                         len = sizeof(data);
 665                 }
 666                 error = ida_command(sc, uc->command, daddr, len,
 667                                     uc->drive, uc->blkno, flags);
 668                 break;
 669         default:
 670                 error = ENOIOCTL;
 671                 break;
 672         }
 673         return (error);
 674 }
 675
 676 static struct cmd_info ci_list[] = {
 677         { CMD_GET_LOG_DRV_INFO,
 678                         sizeof(struct ida_drive_info), DMA_DATA_IN },
 679         { CMD_GET_CTRL_INFO,
 680                         sizeof(struct ida_controller_info), DMA_DATA_IN },
 681         { CMD_SENSE_DRV_STATUS,
 682                         sizeof(struct ida_drive_status), DMA_DATA_IN },
 683         { CMD_START_RECOVERY,           0, 0 },
 684         { CMD_GET_PHYS_DRV_INFO,
 685                         sizeof(struct ida_phys_drv_info), DMA_DATA_TRANSFER },
 686         { CMD_BLINK_DRV_LEDS,
 687                         sizeof(struct ida_blink_drv_leds), DMA_DATA_OUT },
 688         { CMD_SENSE_DRV_LEDS,
 689                         sizeof(struct ida_blink_drv_leds), DMA_DATA_IN },
 690         { CMD_GET_LOG_DRV_EXT,
 691                         sizeof(struct ida_drive_info_ext), DMA_DATA_IN },
 692         { CMD_RESET_CTRL,               0, 0 },
 693         { CMD_GET_CONFIG,               0, 0 },
 694         { CMD_SET_CONFIG,               0, 0 },
 695         { CMD_LABEL_LOG_DRV,
 696                         sizeof(struct ida_label_logical), DMA_DATA_OUT },
 697         { CMD_SET_SURFACE_DELAY,        0, 0 },
 698         { CMD_SENSE_BUS_PARAMS,         0, 0 },
 699         { CMD_SENSE_SUBSYS_INFO,        0, 0 },
 700         { CMD_SENSE_SURFACE_ATS,        0, 0 },
 701         { CMD_PASSTHROUGH,              0, 0 },
 702         { CMD_RESET_SCSI_DEV,           0, 0 },
 703         { CMD_PAUSE_BG_ACT,             0, 0 },
 704         { CMD_RESUME_BG_ACT,            0, 0 },
 705         { CMD_START_FIRMWARE,           0, 0 },
 706         { CMD_SENSE_DRV_ERR_LOG,        0, 0 },
 707         { CMD_START_CPM,                0, 0 },
 708         { CMD_SENSE_CP,                 0, 0 },
 709         { CMD_STOP_CPM,                 0, 0 },
 710         { CMD_FLUSH_CACHE,              0, 0 },
 711         { CMD_ACCEPT_MEDIA_EXCH,        0, 0 },
 712         { 0, 0, 0 }
 713 };
 714
 715 static struct cmd_info *
 716 ida_cmd_lookup (int command)
 717 {
 718         struct cmd_info *ci;
 719
 720         ci = ci_list;
 721         while (ci->cmd) {
 722                 if (ci->cmd == command)
 723                         return (ci);
 724                 ci++;
 725         }
 726         return (NULL);
 727 }