sys/dev/raid/ips/ips_commands.c

   1 /*-
   2  * Written by: David Jeffery
   3  * Copyright (c) 2002 Adaptec Inc.
   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  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/dev/ips/ips_commands.c,v 1.8 2004/01/01 10:22:10 mbr $
  28  * $DragonFly: src/sys/dev/raid/ips/ips_commands.c,v 1.5 2004/07/09 16:15:27 dillon Exp $
  29  */
  30
  31 #include <sys/cdefs.h>
  32
  33 #include <dev/raid/ips/ips.h>
  34
  35 static int
  36 ips_msleep(void *ident, struct ips_softc *sc, int priority, const char *wmesg,
  37            int timo)
  38 {
  39         int     r;
  40
  41         IPS_UNLOCK(sc);
  42         r = tsleep(ident, priority, wmesg, timo);
  43         IPS_LOCK(sc);
  44         return r;
  45 }
  46
  47 /*
  48  * This is an interrupt callback.  It is called from
  49  * interrupt context when the adapter has completed the
  50  * command.  This very generic callback simply stores
  51  * the command's return value in command->arg and wake's
  52  * up anyone waiting on the command.
  53  */
  54 static void
  55 ips_wakeup_callback(ips_command_t *command)
  56 {
  57         ips_cmd_status_t *status;
  58
  59         status = command->arg;
  60         status->value = command->status.value;
  61         bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
  62                         BUS_DMASYNC_POSTWRITE);
  63         IPS_LOCK(command->sc);
  64         wakeup(status);
  65         IPS_UNLOCK(command->sc);
  66 }
  67 /* Below are a series of functions for sending an IO request
  68  * to the adapter.  The flow order is: start, send, callback, finish.
  69  * The caller must have already assembled an iorequest struct to hold
  70  * the details of the IO request. */
  71 static void ips_io_request_finish(ips_command_t *command)
  72 {
  73         struct bio *iobuf = command->arg;
  74
  75         if (ips_read_request(iobuf)) {
  76                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
  77                                 BUS_DMASYNC_POSTREAD);
  78         } else {
  79                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
  80                                 BUS_DMASYNC_POSTWRITE);
  81         }
  82         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
  83         bus_dmamap_destroy(command->data_dmatag, command->data_dmamap);
  84         if (COMMAND_ERROR(&command->status)) {
  85                 iobuf->bio_flags |=BIO_ERROR;
  86                 iobuf->bio_error = EIO;
  87         }
  88         ips_insert_free_cmd(command->sc, command);
  89         ipsd_finish(iobuf);
  90 }
  91
  92 static void
  93 ips_io_request_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
  94                         int error)
  95 {
  96         ips_softc_t *sc;
  97         ips_command_t *command = cmdptr;
  98         ips_sg_element_t *sg_list;
  99         ips_io_cmd *command_struct;
 100         struct bio *iobuf = command->arg;
 101         int i, length = 0;
 102         u_int8_t cmdtype;
 103
 104         sc = command->sc;
 105         if (error) {
 106                 printf("ips: error = %d in ips_sg_request_callback\n", error);
 107                 bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 108                 bus_dmamap_destroy(command->data_dmatag, command->data_dmamap);
 109                 iobuf->bio_flags |= BIO_ERROR;
 110                 iobuf->bio_error = ENOMEM;
 111                 ips_insert_free_cmd(sc, command);
 112                 ipsd_finish(iobuf);
 113                 return;
 114         }
 115         command_struct = (ips_io_cmd *)command->command_buffer;
 116         command_struct->id = command->id;
 117         command_struct->drivenum = (uintptr_t)iobuf->bio_driver1;
 118         if (segnum != 1) {
 119                 if (ips_read_request(iobuf))
 120                         cmdtype = IPS_SG_READ_CMD;
 121                 else
 122                         cmdtype = IPS_SG_WRITE_CMD;
 123                 command_struct->segnum = segnum;
 124                 sg_list = (ips_sg_element_t *)((u_int8_t *)
 125                            command->command_buffer + IPS_COMMAND_LEN);
 126                 for (i = 0; i < segnum; i++) {
 127                         sg_list[i].addr = segments[i].ds_addr;
 128                         sg_list[i].len = segments[i].ds_len;
 129                         length += segments[i].ds_len;
 130                 }
 131                 command_struct->buffaddr =
 132                     (u_int32_t)command->command_phys_addr + IPS_COMMAND_LEN;
 133         } else {
 134                 if (ips_read_request(iobuf))
 135                         cmdtype = IPS_READ_CMD;
 136                 else
 137                         cmdtype = IPS_WRITE_CMD;
 138                 command_struct->buffaddr = segments[0].ds_addr;
 139                 length = segments[0].ds_len;
 140         }
 141         command_struct->command = cmdtype;
 142         command_struct->lba = iobuf->bio_pblkno;
 143         length = (length + IPS_BLKSIZE - 1)/IPS_BLKSIZE;
 144         command_struct->length = length;
 145         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 146                         BUS_DMASYNC_PREWRITE);
 147         if (ips_read_request(iobuf)) {
 148                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 149                                 BUS_DMASYNC_PREREAD);
 150         } else {
 151                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 152                                 BUS_DMASYNC_PREWRITE);
 153         }
 154         /*
 155          * the cast to long long below is necessary because our b_pblkno
 156          * is 32bit wide whereas it's 64bit on FreeBSD-CURRENT.
 157          */
 158         PRINTF(10, "ips test: command id: %d segments: %d "
 159                 "pblkno: %lld length: %d, ds_len: %d\n", command->id, segnum,
 160                 (long long)iobuf->bio_pblkno,
 161                 length, segments[0].ds_len);
 162
 163         sc->ips_issue_cmd(command);
 164         return;
 165 }
 166
 167 static int
 168 ips_send_io_request(ips_command_t *command)
 169 {
 170         ips_softc_t *sc = command->sc;
 171         struct bio *iobuf = command->arg;
 172         command->data_dmatag = sc->sg_dmatag;
 173
 174         if (bus_dmamap_create(command->data_dmatag, 0, &command->data_dmamap)) {
 175                 device_printf(sc->dev, "dmamap failed\n");
 176                 iobuf->bio_flags |= BIO_ERROR;
 177                 iobuf->bio_error = ENOMEM;
 178                 ips_insert_free_cmd(sc, command);
 179                 ipsd_finish(iobuf);
 180                 return 0;
 181         }
 182         command->callback = ips_io_request_finish;
 183         PRINTF(10, "ips test: : bcount %ld\n", iobuf->bio_bcount);
 184         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 185                         iobuf->bio_data, iobuf->bio_bcount,
 186                         ips_io_request_callback, command, 0);
 187         return 0;
 188 }
 189
 190 void
 191 ips_start_io_request(ips_softc_t *sc, struct bio *iobuf)
 192 {
 193         if (ips_get_free_cmd(sc, ips_send_io_request, iobuf, 0)) {
 194                 device_printf(sc->dev, "no mem for command slots!\n");
 195                 iobuf->bio_flags |= BIO_ERROR;
 196                 iobuf->bio_error = ENOMEM;
 197                 ipsd_finish(iobuf);
 198                 return;
 199         }
 200         return;
 201 }
 202
 203 /*
 204  * Below are a series of functions for sending an adapter info request
 205  * to the adapter.  The flow order is: get, send, callback. It uses
 206  * the generic finish callback at the top of this file.
 207  * This can be used to get configuration/status info from the card
 208  */
 209 static void
 210 ips_adapter_info_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum,
 211                           int error)
 212 {
 213         ips_softc_t *sc;
 214         ips_command_t *command = cmdptr;
 215         ips_adapter_info_cmd *command_struct;
 216         sc = command->sc;
 217         if (error) {
 218                 ips_cmd_status_t * status = command->arg;
 219                 status->value = IPS_ERROR_STATUS; /* a lovely error value */
 220                 ips_insert_free_cmd(sc, command);
 221                 printf("ips: error = %d in ips_get_adapter_info\n", error);
 222                 return;
 223         }
 224         command_struct = (ips_adapter_info_cmd *)command->command_buffer;
 225         command_struct->command = IPS_ADAPTER_INFO_CMD;
 226         command_struct->id = command->id;
 227         command_struct->buffaddr = segments[0].ds_addr;
 228
 229         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 230                         BUS_DMASYNC_PREWRITE);
 231         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 232                         BUS_DMASYNC_PREREAD);
 233         sc->ips_issue_cmd(command);
 234 }
 235
 236 static int
 237 ips_send_adapter_info_cmd(ips_command_t *command)
 238 {
 239         ips_softc_t *sc = command->sc;
 240         ips_cmd_status_t *status = command->arg;
 241         int error = 0;
 242
 243         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 244                                 /* alignemnt */ 1,
 245                                 /* boundary  */ 0,
 246                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 247                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 248                                 /* filter    */ NULL,
 249                                 /* filterarg */ NULL,
 250                                 /* maxsize   */ IPS_ADAPTER_INFO_LEN,
 251                                 /* numsegs   */ 1,
 252                                 /* maxsegsize*/ IPS_ADAPTER_INFO_LEN,
 253                                 /* flags     */ 0,
 254                                 &command->data_dmatag) != 0) {
 255                 printf("ips: can't alloc dma tag for adapter status\n");
 256                 error = ENOMEM;
 257                 goto exit;
 258         }
 259         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 260            BUS_DMA_NOWAIT, &command->data_dmamap)) {
 261                 error = ENOMEM;
 262                 goto exit;
 263         }
 264         command->callback = ips_wakeup_callback;
 265         IPS_LOCK(sc);
 266         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 267             command->data_buffer, IPS_ADAPTER_INFO_LEN,
 268             ips_adapter_info_callback, command, BUS_DMA_NOWAIT);
 269         if ((status->value == IPS_ERROR_STATUS) ||
 270             ips_msleep(status, sc, 0, "ips", 30 * hz) == EWOULDBLOCK)
 271                 error = ETIMEDOUT;
 272         IPS_UNLOCK(sc);
 273         if (error == 0) {
 274                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 275                     BUS_DMASYNC_POSTREAD);
 276                 memcpy(&(sc->adapter_info), command->data_buffer,
 277                         IPS_ADAPTER_INFO_LEN);
 278         }
 279         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 280 exit:
 281         /* I suppose I should clean up my memory allocations */
 282         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 283             command->data_dmamap);
 284         bus_dma_tag_destroy(command->data_dmatag);
 285         ips_insert_free_cmd(sc, command);
 286         return error;
 287 }
 288
 289 int
 290 ips_get_adapter_info(ips_softc_t *sc)
 291 {
 292         int error = 0;
 293         ips_cmd_status_t *status;
 294
 295         status = malloc(sizeof(ips_cmd_status_t), M_DEVBUF, M_INTWAIT | M_ZERO);
 296         if (ips_get_free_cmd(sc, ips_send_adapter_info_cmd, status,
 297             IPS_NOWAIT_FLAG) > 0) {
 298                 device_printf(sc->dev, "unable to get adapter configuration\n");
 299                 free(status, M_DEVBUF);
 300                 return ENXIO;
 301         }
 302         if (COMMAND_ERROR(status))
 303                 error = ENXIO;
 304         free(status, M_DEVBUF);
 305         return error;
 306 }
 307
 308 /*
 309  * Below are a series of functions for sending a drive info request
 310  * to the adapter.  The flow order is: get, send, callback. It uses
 311  * the generic finish callback at the top of this file.
 312  * This can be used to get drive status info from the card
 313  */
 314 static void
 315 ips_drive_info_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
 316                         int error)
 317 {
 318         ips_softc_t *sc;
 319         ips_command_t *command = cmdptr;
 320         ips_drive_cmd *command_struct;
 321
 322         sc = command->sc;
 323         if (error) {
 324                 ips_cmd_status_t *status = command->arg;
 325
 326                 status->value = IPS_ERROR_STATUS;
 327                 ips_insert_free_cmd(sc, command);
 328                 printf("ips: error = %d in ips_get_drive_info\n", error);
 329                 return;
 330         }
 331         command_struct = (ips_drive_cmd *)command->command_buffer;
 332         command_struct->command = IPS_DRIVE_INFO_CMD;
 333         command_struct->id = command->id;
 334         command_struct->buffaddr = segments[0].ds_addr;
 335         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 336             BUS_DMASYNC_PREWRITE);
 337         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 338             BUS_DMASYNC_PREREAD);
 339         sc->ips_issue_cmd(command);
 340 }
 341
 342 static int
 343 ips_send_drive_info_cmd(ips_command_t *command)
 344 {
 345         int error = 0;
 346         ips_softc_t *sc = command->sc;
 347         ips_cmd_status_t *status = command->arg;
 348         ips_drive_info_t *driveinfo;
 349
 350         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 351                                 /* alignemnt */ 1,
 352                                 /* boundary  */ 0,
 353                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 354                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 355                                 /* filter    */ NULL,
 356                                 /* filterarg */ NULL,
 357                                 /* maxsize   */ IPS_DRIVE_INFO_LEN,
 358                                 /* numsegs   */ 1,
 359                                 /* maxsegsize*/ IPS_DRIVE_INFO_LEN,
 360                                 /* flags     */ 0,
 361                                 &command->data_dmatag) != 0) {
 362                 printf("ips: can't alloc dma tag for drive status\n");
 363                 error = ENOMEM;
 364                 goto exit;
 365         }
 366         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 367             BUS_DMA_NOWAIT, &command->data_dmamap)) {
 368                 error = ENOMEM;
 369                 goto exit;
 370         }
 371         command->callback = ips_wakeup_callback;
 372         IPS_LOCK(sc);
 373         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 374             command->data_buffer,IPS_DRIVE_INFO_LEN,
 375             ips_drive_info_callback, command, BUS_DMA_NOWAIT);
 376         if ((status->value == IPS_ERROR_STATUS) ||
 377             ips_msleep(status, sc, 0, "ips", 10 * hz) == EWOULDBLOCK)
 378                 error = ETIMEDOUT;
 379         IPS_UNLOCK(sc);
 380
 381         if (error == 0) {
 382                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 383                     BUS_DMASYNC_POSTREAD);
 384                 driveinfo = command->data_buffer;
 385                 memcpy(sc->drives, driveinfo->drives, sizeof(ips_drive_t) * 8);
 386                 sc->drivecount = driveinfo->drivecount;
 387                 device_printf(sc->dev, "logical drives: %d\n", sc->drivecount);
 388         }
 389         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 390 exit:
 391         /* I suppose I should clean up my memory allocations */
 392         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 393                         command->data_dmamap);
 394         bus_dma_tag_destroy(command->data_dmatag);
 395         ips_insert_free_cmd(sc, command);
 396         return error;
 397
 398 }
 399 int
 400 ips_get_drive_info(ips_softc_t *sc)
 401 {
 402         int error = 0;
 403         ips_cmd_status_t *status;
 404
 405         status = malloc(sizeof(ips_cmd_status_t), M_DEVBUF, M_INTWAIT | M_ZERO);
 406         if (ips_get_free_cmd(sc, ips_send_drive_info_cmd, status,
 407             IPS_NOWAIT_FLAG) > 0) {
 408                 free(status, M_DEVBUF);
 409                 device_printf(sc->dev, "unable to get drive configuration\n");
 410                 return ENXIO;
 411         }
 412         if (COMMAND_ERROR(status))
 413                 error = ENXIO;
 414         free(status, M_DEVBUF);
 415         return error;
 416 }
 417
 418 /*
 419  * Below is a pair of functions for making sure data is safely
 420  * on disk by flushing the adapter's cache.
 421  */
 422 static int
 423 ips_send_flush_cache_cmd(ips_command_t *command)
 424 {
 425         ips_softc_t *sc = command->sc;
 426         ips_cmd_status_t *status = command->arg;
 427         ips_generic_cmd *command_struct;
 428
 429         PRINTF(10,"ips test: got a command, building flush command\n");
 430         command->callback = ips_wakeup_callback;
 431         command_struct = (ips_generic_cmd *)command->command_buffer;
 432         command_struct->command = IPS_CACHE_FLUSH_CMD;
 433         command_struct->id = command->id;
 434         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 435             BUS_DMASYNC_PREWRITE);
 436         IPS_LOCK(sc);
 437         sc->ips_issue_cmd(command);
 438         if (status->value != IPS_ERROR_STATUS)
 439                 ips_msleep(status, sc, 0, "flush2", 0);
 440         IPS_UNLOCK(sc);
 441         ips_insert_free_cmd(sc, command);
 442         return 0;
 443 }
 444
 445 int
 446 ips_flush_cache(ips_softc_t *sc)
 447 {
 448         ips_cmd_status_t *status;
 449
 450         status = malloc(sizeof(ips_cmd_status_t), M_DEVBUF, M_INTWAIT | M_ZERO);
 451         device_printf(sc->dev, "flushing cache\n");
 452         if (ips_get_free_cmd(sc, ips_send_flush_cache_cmd, status,
 453             IPS_NOWAIT_FLAG)) {
 454                 free(status, M_DEVBUF);
 455                 device_printf(sc->dev, "ERROR: unable to get a command! "
 456                     "can't flush cache!\n");
 457                 return 1;
 458         }
 459         if (COMMAND_ERROR(status)) {
 460                 free(status, M_DEVBUF);
 461                 device_printf(sc->dev, "ERROR: cache flush command failed!\n");
 462                 return 1;
 463         }
 464         free(status, M_DEVBUF);
 465         return 0;
 466 }
 467
 468 /*
 469  * Simplified localtime to provide timevalues for ffdc.
 470  * Taken from libc/stdtime/localtime.c
 471  */
 472 static void
 473 ips_ffdc_settime(ips_adapter_ffdc_cmd *command, time_t sctime)
 474 {
 475         long    days, rem, y;
 476         int     yleap, *ip, month;
 477         int     year_lengths[2] = { IPS_DAYSPERNYEAR, IPS_DAYSPERLYEAR };
 478         int     mon_lengths[2][IPS_MONSPERYEAR] = {
 479                 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
 480                 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
 481         };
 482
 483         days = sctime / IPS_SECSPERDAY;
 484         rem  = sctime % IPS_SECSPERDAY;
 485
 486         command->hour = rem / IPS_SECSPERHOUR;
 487         rem           = rem % IPS_SECSPERHOUR;
 488
 489         command->minute = rem / IPS_SECSPERMIN;
 490         command->second = rem % IPS_SECSPERMIN;
 491
 492         y = IPS_EPOCH_YEAR;
 493         while (days < 0 || days >= (long)year_lengths[yleap = ips_isleap(y)]) {
 494                 long    newy;
 495
 496                 newy = y + days / IPS_DAYSPERNYEAR;
 497                 if (days < 0)
 498                         --newy;
 499                 days -= (newy - y) * IPS_DAYSPERNYEAR +
 500                     IPS_LEAPS_THRU_END_OF(newy - 1) -
 501                     IPS_LEAPS_THRU_END_OF(y - 1);
 502                 y = newy;
 503         }
 504         command->yearH = y / 100;
 505         command->yearL = y % 100;
 506         ip = mon_lengths[yleap];
 507         for (month = 0; days >= (long)ip[month]; ++month)
 508                 days = days - (long)ip[month];
 509         command->month = month + 1;
 510         command->day = days + 1;
 511 }
 512
 513 static int
 514 ips_send_ffdc_reset_cmd(ips_command_t *command)
 515 {
 516         ips_softc_t *sc = command->sc;
 517         ips_cmd_status_t *status = command->arg;
 518         ips_adapter_ffdc_cmd *command_struct;
 519
 520         PRINTF(10, "ips test: got a command, building ffdc reset command\n");
 521         command->callback = ips_wakeup_callback;
 522         command_struct = (ips_adapter_ffdc_cmd *)command->command_buffer;
 523         command_struct->command = IPS_FFDC_CMD;
 524         command_struct->id = command->id;
 525         command_struct->reset_count = sc->ffdc_resetcount;
 526         command_struct->reset_type  = 0x0;
 527         ips_ffdc_settime(command_struct, sc->ffdc_resettime.tv_sec);
 528         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 529             BUS_DMASYNC_PREWRITE);
 530         IPS_LOCK(sc);
 531         sc->ips_issue_cmd(command);
 532         if (status->value != IPS_ERROR_STATUS)
 533                 ips_msleep(status, sc, 0, "ffdc", 0);
 534         IPS_UNLOCK(sc);
 535         ips_insert_free_cmd(sc, command);
 536         return 0;
 537 }
 538
 539 int
 540 ips_ffdc_reset(ips_softc_t *sc)
 541 {
 542         ips_cmd_status_t *status;
 543
 544         status = malloc(sizeof(ips_cmd_status_t), M_DEVBUF, M_INTWAIT | M_ZERO);
 545         if (ips_get_free_cmd(sc, ips_send_ffdc_reset_cmd, status,
 546             IPS_NOWAIT_FLAG)) {
 547                 free(status, M_DEVBUF);
 548                 device_printf(sc->dev, "ERROR: unable to get a command! "
 549                     "can't send ffdc reset!\n");
 550                 return 1;
 551         }
 552         if (COMMAND_ERROR(status)) {
 553                 free(status, M_DEVBUF);
 554                 device_printf(sc->dev, "ERROR: ffdc reset command failed!\n");
 555                 return 1;
 556         }
 557         free(status, M_DEVBUF);
 558         return 0;
 559 }
 560
 561 static void
 562 ips_write_nvram(ips_command_t *command)
 563 {
 564         ips_softc_t *sc = command->sc;
 565         ips_rw_nvram_cmd *command_struct;
 566         ips_nvram_page5 *nvram;
 567
 568         /*FIXME check for error */
 569         command->callback = ips_wakeup_callback;
 570         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
 571         command_struct->command = IPS_RW_NVRAM_CMD;
 572         command_struct->id = command->id;
 573         command_struct->pagenum = 5;
 574         command_struct->rw      = 1;    /* write */
 575         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 576             BUS_DMASYNC_POSTREAD);
 577         nvram = command->data_buffer;
 578         /* retrieve adapter info and save in sc */
 579         sc->adapter_type = nvram->adapter_type;
 580         strncpy(nvram->driver_high, IPS_VERSION_MAJOR, 4);
 581         strncpy(nvram->driver_low, IPS_VERSION_MINOR, 4);
 582         nvram->operating_system = IPS_OS_FREEBSD;
 583         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 584             BUS_DMASYNC_PREWRITE);
 585         sc->ips_issue_cmd(command);
 586 }
 587
 588 static void
 589 ips_read_nvram_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
 590                         int error)
 591 {
 592         ips_softc_t *sc;
 593         ips_command_t *command = cmdptr;
 594         ips_rw_nvram_cmd *command_struct;
 595
 596         sc = command->sc;
 597         if (error) {
 598                 ips_cmd_status_t *status = command->arg;
 599
 600                 status->value = IPS_ERROR_STATUS;
 601                 ips_insert_free_cmd(sc, command);
 602                 printf("ips: error = %d in ips_read_nvram_callback\n", error);
 603                 return;
 604         }
 605         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
 606         command_struct->command = IPS_RW_NVRAM_CMD;
 607         command_struct->id = command->id;
 608         command_struct->pagenum = 5;
 609         command_struct->rw = 0;
 610         command_struct->buffaddr = segments[0].ds_addr;
 611
 612         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 613             BUS_DMASYNC_PREWRITE);
 614         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 615             BUS_DMASYNC_PREREAD);
 616         sc->ips_issue_cmd(command);
 617 }
 618
 619 static int
 620 ips_read_nvram(ips_command_t *command)
 621 {
 622         int error = 0;
 623         ips_softc_t *sc = command->sc;
 624         ips_cmd_status_t *status = command->arg;
 625
 626         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 627                                 /* alignemnt */ 1,
 628                                 /* boundary  */ 0,
 629                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 630                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 631                                 /* filter    */ NULL,
 632                                 /* filterarg */ NULL,
 633                                 /* maxsize   */ IPS_NVRAM_PAGE_SIZE,
 634                                 /* numsegs   */ 1,
 635                                 /* maxsegsize*/ IPS_NVRAM_PAGE_SIZE,
 636                                 /* flags     */ 0,
 637                                 &command->data_dmatag) != 0) {
 638                 printf("ips: can't alloc dma tag for nvram\n");
 639                 error = ENOMEM;
 640                 goto exit;
 641         }
 642         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 643             BUS_DMA_NOWAIT, &command->data_dmamap)) {
 644                 error = ENOMEM;
 645                 goto exit;
 646         }
 647         command->callback = ips_write_nvram;
 648         IPS_LOCK(sc);
 649         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 650             command->data_buffer, IPS_NVRAM_PAGE_SIZE, ips_read_nvram_callback,
 651             command, BUS_DMA_NOWAIT);
 652         if ((status->value == IPS_ERROR_STATUS) ||
 653             ips_msleep(status, sc, 0, "ips", 0) == EWOULDBLOCK)
 654                 error = ETIMEDOUT;
 655         IPS_UNLOCK(sc);
 656         if (error == 0) {
 657                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 658                                 BUS_DMASYNC_POSTWRITE);
 659         }
 660         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 661 exit:
 662         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 663                         command->data_dmamap);
 664         bus_dma_tag_destroy(command->data_dmatag);
 665         ips_insert_free_cmd(sc, command);
 666         return error;
 667 }
 668
 669 int
 670 ips_update_nvram(ips_softc_t *sc)
 671 {
 672         ips_cmd_status_t *status;
 673
 674         status = malloc(sizeof(ips_cmd_status_t), M_DEVBUF, M_INTWAIT | M_ZERO);
 675         if (ips_get_free_cmd(sc, ips_read_nvram, status, IPS_NOWAIT_FLAG)) {
 676                 free(status, M_DEVBUF);
 677                 device_printf(sc->dev, "ERROR: unable to get a command! "
 678                     "can't update nvram\n");
 679                 return 1;
 680         }
 681         if (COMMAND_ERROR(status)) {
 682                 free(status, M_DEVBUF);
 683                 device_printf(sc->dev, "ERROR: nvram update command failed!\n");
 684                 return 1;
 685         }
 686         free(status, M_DEVBUF);
 687         return 0;
 688 }
 689
 690 static int
 691 ips_send_config_sync_cmd(ips_command_t *command)
 692 {
 693         ips_softc_t *sc = command->sc;
 694         ips_cmd_status_t *status = command->arg;
 695         ips_generic_cmd *command_struct;
 696
 697         PRINTF(10, "ips test: got a command, building flush command\n");
 698         command->callback = ips_wakeup_callback;
 699         command_struct = (ips_generic_cmd *)command->command_buffer;
 700         command_struct->command = IPS_CONFIG_SYNC_CMD;
 701         command_struct->id = command->id;
 702         command_struct->reserve2 = IPS_POCL;
 703         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 704             BUS_DMASYNC_PREWRITE);
 705         IPS_LOCK(sc);
 706         sc->ips_issue_cmd(command);
 707         if (status->value != IPS_ERROR_STATUS)
 708                 ips_msleep(status, sc, 0, "ipssyn", 0);
 709         IPS_UNLOCK(sc);
 710         ips_insert_free_cmd(sc, command);
 711         return 0;
 712 }
 713
 714 static int
 715 ips_send_error_table_cmd(ips_command_t *command)
 716 {
 717         ips_softc_t *sc = command->sc;
 718         ips_cmd_status_t *status = command->arg;
 719         ips_generic_cmd *command_struct;
 720
 721         PRINTF(10, "ips test: got a command, building errortable command\n");
 722         command->callback = ips_wakeup_callback;
 723         command_struct = (ips_generic_cmd *)command->command_buffer;
 724         command_struct->command = IPS_ERROR_TABLE_CMD;
 725         command_struct->id = command->id;
 726         command_struct->reserve2 = IPS_CSL;
 727         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 728             BUS_DMASYNC_PREWRITE);
 729         IPS_LOCK(sc);
 730         sc->ips_issue_cmd(command);
 731         if (status->value != IPS_ERROR_STATUS)
 732                 ips_msleep(status, sc, 0, "ipsetc", 0);
 733         IPS_UNLOCK(sc);
 734         ips_insert_free_cmd(sc, command);
 735         return 0;
 736 }
 737
 738 int
 739 ips_clear_adapter(ips_softc_t *sc)
 740 {
 741         ips_cmd_status_t *status;
 742
 743         status = malloc(sizeof(ips_cmd_status_t), M_DEVBUF, M_INTWAIT | M_ZERO);
 744         device_printf(sc->dev, "syncing config\n");
 745         if (ips_get_free_cmd(sc, ips_send_config_sync_cmd, status,
 746             IPS_NOWAIT_FLAG)) {
 747                 free(status, M_DEVBUF);
 748                 device_printf(sc->dev, "ERROR: unable to get a command! "
 749                     "can't sync cache!\n");
 750                 return 1;
 751         }
 752         if (COMMAND_ERROR(status)) {
 753                 free(status, M_DEVBUF);
 754                 device_printf(sc->dev, "ERROR: cache sync command failed!\n");
 755                 return 1;
 756         }
 757         device_printf(sc->dev, "clearing error table\n");
 758         if (ips_get_free_cmd(sc, ips_send_error_table_cmd, status,
 759             IPS_NOWAIT_FLAG)) {
 760                 free(status, M_DEVBUF);
 761                 device_printf(sc->dev, "ERROR: unable to get a command! "
 762                     "can't sync cache!\n");
 763                 return 1;
 764         }
 765         if (COMMAND_ERROR(status)) {
 766                 device_printf(sc->dev, "ERROR: etable command failed!\n");
 767                 free(status, M_DEVBUF);
 768                 return 1;
 769         }
 770         free(status, M_DEVBUF);
 771         return 0;
 772 }