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 1.10 2004/05/30 04:01:29 scottl Exp $
  28  * $DragonFly: src/sys/dev/raid/ips/ips_commands.c,v 1.7 2004/09/06 16:39:47 joerg Exp $
  29  */
  30
  31 #include <dev/raid/ips/ips.h>
  32
  33 static int
  34 ips_msleep(void *ident, struct ips_softc *sc, int priority, const char *wmesg,
  35            int timo)
  36 {
  37         int     r;
  38
  39         IPS_UNLOCK(sc);
  40         r = tsleep(ident, priority, wmesg, timo);
  41         IPS_LOCK(sc);
  42         return r;
  43 }
  44
  45 /*
  46  * This is an interrupt callback.  It is called from
  47  * interrupt context when the adapter has completed the
  48  * command.  This very generic callback simply stores
  49  * the command's return value in command->arg and wake's
  50  * up anyone waiting on the command.
  51  */
  52 static void
  53 ips_wakeup_callback(ips_command_t *command)
  54 {
  55         ips_cmd_status_t *status;
  56
  57         status = command->arg;
  58         status->value = command->status.value;
  59         bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
  60                         BUS_DMASYNC_POSTWRITE);
  61         IPS_LOCK(command->sc);
  62         wakeup(status);
  63         IPS_UNLOCK(command->sc);
  64 }
  65
  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  */
  72 static void
  73 ips_io_request_finish(ips_command_t *command)
  74 {
  75         struct bio *iobuf = command->arg;
  76
  77         if (ips_read_request(iobuf)) {
  78                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
  79                                 BUS_DMASYNC_POSTREAD);
  80         } else {
  81                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
  82                                 BUS_DMASYNC_POSTWRITE);
  83         }
  84         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
  85         bus_dmamap_destroy(command->data_dmatag, command->data_dmamap);
  86         if (COMMAND_ERROR(&command->status)) {
  87                 iobuf->bio_flags |=BIO_ERROR;
  88                 iobuf->bio_error = EIO;
  89         }
  90         ips_insert_free_cmd(command->sc, command);
  91         ipsd_finish(iobuf);
  92 }
  93
  94 static void
  95 ips_io_request_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
  96                         int error)
  97 {
  98         ips_softc_t *sc;
  99         ips_command_t *command = cmdptr;
 100         ips_sg_element_t *sg_list;
 101         ips_io_cmd *command_struct;
 102         struct bio *iobuf = command->arg;
 103         int i, length = 0;
 104         u_int8_t cmdtype;
 105
 106         sc = command->sc;
 107         if (error) {
 108                 printf("ips: error = %d in ips_sg_request_callback\n", error);
 109                 bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 110                 bus_dmamap_destroy(command->data_dmatag, command->data_dmamap);
 111                 iobuf->bio_flags |= BIO_ERROR;
 112                 iobuf->bio_error = ENOMEM;
 113                 ips_insert_free_cmd(sc, command);
 114                 ipsd_finish(iobuf);
 115                 return;
 116         }
 117         command_struct = (ips_io_cmd *)command->command_buffer;
 118         command_struct->id = command->id;
 119         command_struct->drivenum = (uintptr_t)iobuf->bio_driver1;
 120         if (segnum != 1) {
 121                 if (ips_read_request(iobuf))
 122                         cmdtype = IPS_SG_READ_CMD;
 123                 else
 124                         cmdtype = IPS_SG_WRITE_CMD;
 125                 command_struct->segnum = segnum;
 126                 sg_list = (ips_sg_element_t *)((u_int8_t *)
 127                            command->command_buffer + IPS_COMMAND_LEN);
 128                 for (i = 0; i < segnum; i++) {
 129                         sg_list[i].addr = segments[i].ds_addr;
 130                         sg_list[i].len = segments[i].ds_len;
 131                         length += segments[i].ds_len;
 132                 }
 133                 command_struct->buffaddr =
 134                     (u_int32_t)command->command_phys_addr + IPS_COMMAND_LEN;
 135         } else {
 136                 if (ips_read_request(iobuf))
 137                         cmdtype = IPS_READ_CMD;
 138                 else
 139                         cmdtype = IPS_WRITE_CMD;
 140                 command_struct->buffaddr = segments[0].ds_addr;
 141                 length = segments[0].ds_len;
 142         }
 143         command_struct->command = cmdtype;
 144         command_struct->lba = iobuf->bio_pblkno;
 145         length = (length + IPS_BLKSIZE - 1)/IPS_BLKSIZE;
 146         command_struct->length = length;
 147         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 148                         BUS_DMASYNC_PREWRITE);
 149         if (ips_read_request(iobuf)) {
 150                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 151                                 BUS_DMASYNC_PREREAD);
 152         } else {
 153                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 154                                 BUS_DMASYNC_PREWRITE);
 155         }
 156         /*
 157          * the cast to long long below is necessary because our b_pblkno
 158          * is 32bit wide whereas it's 64bit on FreeBSD-CURRENT.
 159          */
 160         PRINTF(10, "ips test: command id: %d segments: %d "
 161                 "pblkno: %lld length: %d, ds_len: %d\n", command->id, segnum,
 162                 (long long)iobuf->bio_pblkno,
 163                 length, segments[0].ds_len);
 164
 165         sc->ips_issue_cmd(command);
 166         return;
 167 }
 168
 169 static int
 170 ips_send_io_request(ips_command_t *command)
 171 {
 172         ips_softc_t *sc = command->sc;
 173         struct bio *iobuf = command->arg;
 174         command->data_dmatag = sc->sg_dmatag;
 175
 176         if (bus_dmamap_create(command->data_dmatag, 0, &command->data_dmamap)) {
 177                 device_printf(sc->dev, "dmamap failed\n");
 178                 iobuf->bio_flags |= BIO_ERROR;
 179                 iobuf->bio_error = ENOMEM;
 180                 ips_insert_free_cmd(sc, command);
 181                 ipsd_finish(iobuf);
 182                 return 0;
 183         }
 184         command->callback = ips_io_request_finish;
 185         PRINTF(10, "ips test: : bcount %ld\n", iobuf->bio_bcount);
 186         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 187                         iobuf->bio_data, iobuf->bio_bcount,
 188                         ips_io_request_callback, command, 0);
 189         return 0;
 190 }
 191
 192 void
 193 ips_start_io_request(ips_softc_t *sc, struct bio *iobuf)
 194 {
 195         if (ips_get_free_cmd(sc, ips_send_io_request, iobuf, 0)) {
 196                 device_printf(sc->dev, "no mem for command slots!\n");
 197                 iobuf->bio_flags |= BIO_ERROR;
 198                 iobuf->bio_error = ENOMEM;
 199                 ipsd_finish(iobuf);
 200                 return;
 201         }
 202         return;
 203 }
 204
 205 /*
 206  * Below are a series of functions for sending an adapter info request
 207  * to the adapter.  The flow order is: get, send, callback. It uses
 208  * the generic finish callback at the top of this file.
 209  * This can be used to get configuration/status info from the card
 210  */
 211 static void
 212 ips_adapter_info_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum,
 213                           int error)
 214 {
 215         ips_softc_t *sc;
 216         ips_command_t *command = cmdptr;
 217         ips_adapter_info_cmd *command_struct;
 218         sc = command->sc;
 219         if (error) {
 220                 ips_cmd_status_t * status = command->arg;
 221                 status->value = IPS_ERROR_STATUS; /* a lovely error value */
 222                 ips_insert_free_cmd(sc, command);
 223                 printf("ips: error = %d in ips_get_adapter_info\n", error);
 224                 return;
 225         }
 226         command_struct = (ips_adapter_info_cmd *)command->command_buffer;
 227         command_struct->command = IPS_ADAPTER_INFO_CMD;
 228         command_struct->id = command->id;
 229         command_struct->buffaddr = segments[0].ds_addr;
 230
 231         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 232                         BUS_DMASYNC_PREWRITE);
 233         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 234                         BUS_DMASYNC_PREREAD);
 235         sc->ips_issue_cmd(command);
 236 }
 237
 238 static int
 239 ips_send_adapter_info_cmd(ips_command_t *command)
 240 {
 241         ips_softc_t *sc = command->sc;
 242         ips_cmd_status_t *status = command->arg;
 243         int error = 0;
 244
 245         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 246                                 /* alignemnt */ 1,
 247                                 /* boundary  */ 0,
 248                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 249                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 250                                 /* filter    */ NULL,
 251                                 /* filterarg */ NULL,
 252                                 /* maxsize   */ IPS_ADAPTER_INFO_LEN,
 253                                 /* numsegs   */ 1,
 254                                 /* maxsegsize*/ IPS_ADAPTER_INFO_LEN,
 255                                 /* flags     */ 0,
 256                                 &command->data_dmatag) != 0) {
 257                 printf("ips: can't alloc dma tag for adapter status\n");
 258                 error = ENOMEM;
 259                 goto exit;
 260         }
 261         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 262            BUS_DMA_NOWAIT, &command->data_dmamap)) {
 263                 error = ENOMEM;
 264                 goto exit;
 265         }
 266         command->callback = ips_wakeup_callback;
 267         IPS_LOCK(sc);
 268         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 269             command->data_buffer, IPS_ADAPTER_INFO_LEN,
 270             ips_adapter_info_callback, command, BUS_DMA_NOWAIT);
 271         if ((status->value == IPS_ERROR_STATUS) ||
 272             ips_msleep(status, sc, 0, "ips", 30 * hz) == EWOULDBLOCK)
 273                 error = ETIMEDOUT;
 274         IPS_UNLOCK(sc);
 275         if (error == 0) {
 276                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 277                     BUS_DMASYNC_POSTREAD);
 278                 memcpy(&(sc->adapter_info), command->data_buffer,
 279                         IPS_ADAPTER_INFO_LEN);
 280         }
 281         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 282 exit:
 283         /* I suppose I should clean up my memory allocations */
 284         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 285             command->data_dmamap);
 286         bus_dma_tag_destroy(command->data_dmatag);
 287         ips_insert_free_cmd(sc, command);
 288         return error;
 289 }
 290
 291 int
 292 ips_get_adapter_info(ips_softc_t *sc)
 293 {
 294         int error = 0;
 295         ips_cmd_status_t *status;
 296
 297         status = malloc(sizeof(ips_cmd_status_t), M_IPSBUF, M_INTWAIT | M_ZERO);
 298         if (ips_get_free_cmd(sc, ips_send_adapter_info_cmd, status,
 299             IPS_NOWAIT_FLAG) > 0) {
 300                 device_printf(sc->dev, "unable to get adapter configuration\n");
 301                 free(status, M_IPSBUF);
 302                 return ENXIO;
 303         }
 304         if (COMMAND_ERROR(status))
 305                 error = ENXIO;
 306         free(status, M_IPSBUF);
 307         return error;
 308 }
 309
 310 /*
 311  * Below are a series of functions for sending a drive info request
 312  * to the adapter.  The flow order is: get, send, callback. It uses
 313  * the generic finish callback at the top of this file.
 314  * This can be used to get drive status info from the card
 315  */
 316 static void
 317 ips_drive_info_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
 318                         int error)
 319 {
 320         ips_softc_t *sc;
 321         ips_command_t *command = cmdptr;
 322         ips_drive_cmd *command_struct;
 323
 324         sc = command->sc;
 325         if (error) {
 326                 ips_cmd_status_t *status = command->arg;
 327
 328                 status->value = IPS_ERROR_STATUS;
 329                 ips_insert_free_cmd(sc, command);
 330                 printf("ips: error = %d in ips_get_drive_info\n", error);
 331                 return;
 332         }
 333         command_struct = (ips_drive_cmd *)command->command_buffer;
 334         command_struct->command = IPS_DRIVE_INFO_CMD;
 335         command_struct->id = command->id;
 336         command_struct->buffaddr = segments[0].ds_addr;
 337         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 338             BUS_DMASYNC_PREWRITE);
 339         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 340             BUS_DMASYNC_PREREAD);
 341         sc->ips_issue_cmd(command);
 342 }
 343
 344 static int
 345 ips_send_drive_info_cmd(ips_command_t *command)
 346 {
 347         int error = 0;
 348         ips_softc_t *sc = command->sc;
 349         ips_cmd_status_t *status = command->arg;
 350         ips_drive_info_t *driveinfo;
 351
 352         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 353                                 /* alignemnt */ 1,
 354                                 /* boundary  */ 0,
 355                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 356                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 357                                 /* filter    */ NULL,
 358                                 /* filterarg */ NULL,
 359                                 /* maxsize   */ IPS_DRIVE_INFO_LEN,
 360                                 /* numsegs   */ 1,
 361                                 /* maxsegsize*/ IPS_DRIVE_INFO_LEN,
 362                                 /* flags     */ 0,
 363                                 &command->data_dmatag) != 0) {
 364                 printf("ips: can't alloc dma tag for drive status\n");
 365                 error = ENOMEM;
 366                 goto exit;
 367         }
 368         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 369             BUS_DMA_NOWAIT, &command->data_dmamap)) {
 370                 error = ENOMEM;
 371                 goto exit;
 372         }
 373         command->callback = ips_wakeup_callback;
 374         IPS_LOCK(sc);
 375         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 376             command->data_buffer,IPS_DRIVE_INFO_LEN,
 377             ips_drive_info_callback, command, BUS_DMA_NOWAIT);
 378         if ((status->value == IPS_ERROR_STATUS) ||
 379             ips_msleep(status, sc, 0, "ips", 10 * hz) == EWOULDBLOCK)
 380                 error = ETIMEDOUT;
 381         IPS_UNLOCK(sc);
 382
 383         if (error == 0) {
 384                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 385                     BUS_DMASYNC_POSTREAD);
 386                 driveinfo = command->data_buffer;
 387                 memcpy(sc->drives, driveinfo->drives, sizeof(ips_drive_t) * 8);
 388                 sc->drivecount = driveinfo->drivecount;
 389                 device_printf(sc->dev, "logical drives: %d\n", sc->drivecount);
 390         }
 391         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 392 exit:
 393         /* I suppose I should clean up my memory allocations */
 394         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 395                         command->data_dmamap);
 396         bus_dma_tag_destroy(command->data_dmatag);
 397         ips_insert_free_cmd(sc, command);
 398         return error;
 399
 400 }
 401 int
 402 ips_get_drive_info(ips_softc_t *sc)
 403 {
 404         int error = 0;
 405         ips_cmd_status_t *status;
 406
 407         status = malloc(sizeof(ips_cmd_status_t), M_IPSBUF, M_INTWAIT | M_ZERO);
 408         if (ips_get_free_cmd(sc, ips_send_drive_info_cmd, status,
 409             IPS_NOWAIT_FLAG) > 0) {
 410                 free(status, M_IPSBUF);
 411                 device_printf(sc->dev, "unable to get drive configuration\n");
 412                 return ENXIO;
 413         }
 414         if (COMMAND_ERROR(status))
 415                 error = ENXIO;
 416         free(status, M_IPSBUF);
 417         return error;
 418 }
 419
 420 /*
 421  * Below is a pair of functions for making sure data is safely
 422  * on disk by flushing the adapter's cache.
 423  */
 424 static int
 425 ips_send_flush_cache_cmd(ips_command_t *command)
 426 {
 427         ips_softc_t *sc = command->sc;
 428         ips_cmd_status_t *status = command->arg;
 429         ips_generic_cmd *command_struct;
 430
 431         PRINTF(10,"ips test: got a command, building flush command\n");
 432         command->callback = ips_wakeup_callback;
 433         command_struct = (ips_generic_cmd *)command->command_buffer;
 434         command_struct->command = IPS_CACHE_FLUSH_CMD;
 435         command_struct->id = command->id;
 436         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 437             BUS_DMASYNC_PREWRITE);
 438         IPS_LOCK(sc);
 439         sc->ips_issue_cmd(command);
 440         if (status->value != IPS_ERROR_STATUS)
 441                 ips_msleep(status, sc, 0, "flush2", 0);
 442         IPS_UNLOCK(sc);
 443         ips_insert_free_cmd(sc, command);
 444         return 0;
 445 }
 446
 447 int
 448 ips_flush_cache(ips_softc_t *sc)
 449 {
 450         ips_cmd_status_t *status;
 451
 452         status = malloc(sizeof(ips_cmd_status_t), M_IPSBUF, M_INTWAIT | M_ZERO);
 453         device_printf(sc->dev, "flushing cache\n");
 454         if (ips_get_free_cmd(sc, ips_send_flush_cache_cmd, status,
 455             IPS_NOWAIT_FLAG)) {
 456                 free(status, M_IPSBUF);
 457                 device_printf(sc->dev, "ERROR: unable to get a command! "
 458                     "can't flush cache!\n");
 459                 return 1;
 460         }
 461         if (COMMAND_ERROR(status)) {
 462                 free(status, M_IPSBUF);
 463                 device_printf(sc->dev, "ERROR: cache flush command failed!\n");
 464                 return 1;
 465         }
 466         free(status, M_IPSBUF);
 467         return 0;
 468 }
 469
 470 /*
 471  * Simplified localtime to provide timevalues for ffdc.
 472  * Taken from libc/stdtime/localtime.c
 473  */
 474 static void
 475 ips_ffdc_settime(ips_adapter_ffdc_cmd *command, time_t sctime)
 476 {
 477         long    days, rem, y;
 478         int     yleap, *ip, month;
 479         int     year_lengths[2] = { IPS_DAYSPERNYEAR, IPS_DAYSPERLYEAR };
 480         int     mon_lengths[2][IPS_MONSPERYEAR] = {
 481                 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
 482                 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
 483         };
 484
 485         days = sctime / IPS_SECSPERDAY;
 486         rem  = sctime % IPS_SECSPERDAY;
 487
 488         command->hour = rem / IPS_SECSPERHOUR;
 489         rem           = rem % IPS_SECSPERHOUR;
 490
 491         command->minute = rem / IPS_SECSPERMIN;
 492         command->second = rem % IPS_SECSPERMIN;
 493
 494         y = IPS_EPOCH_YEAR;
 495         while (days < 0 || days >= (long)year_lengths[yleap = ips_isleap(y)]) {
 496                 long    newy;
 497
 498                 newy = y + days / IPS_DAYSPERNYEAR;
 499                 if (days < 0)
 500                         --newy;
 501                 days -= (newy - y) * IPS_DAYSPERNYEAR +
 502                     IPS_LEAPS_THRU_END_OF(newy - 1) -
 503                     IPS_LEAPS_THRU_END_OF(y - 1);
 504                 y = newy;
 505         }
 506         command->yearH = y / 100;
 507         command->yearL = y % 100;
 508         ip = mon_lengths[yleap];
 509         for (month = 0; days >= (long)ip[month]; ++month)
 510                 days = days - (long)ip[month];
 511         command->month = month + 1;
 512         command->day = days + 1;
 513 }
 514
 515 static int
 516 ips_send_ffdc_reset_cmd(ips_command_t *command)
 517 {
 518         ips_softc_t *sc = command->sc;
 519         ips_cmd_status_t *status = command->arg;
 520         ips_adapter_ffdc_cmd *command_struct;
 521
 522         PRINTF(10, "ips test: got a command, building ffdc reset command\n");
 523         command->callback = ips_wakeup_callback;
 524         command_struct = (ips_adapter_ffdc_cmd *)command->command_buffer;
 525         command_struct->command = IPS_FFDC_CMD;
 526         command_struct->id = command->id;
 527         command_struct->reset_count = sc->ffdc_resetcount;
 528         command_struct->reset_type  = 0x0;
 529         ips_ffdc_settime(command_struct, sc->ffdc_resettime.tv_sec);
 530         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 531             BUS_DMASYNC_PREWRITE);
 532         IPS_LOCK(sc);
 533         sc->ips_issue_cmd(command);
 534         if (status->value != IPS_ERROR_STATUS)
 535                 ips_msleep(status, sc, 0, "ffdc", 0);
 536         IPS_UNLOCK(sc);
 537         ips_insert_free_cmd(sc, command);
 538         return 0;
 539 }
 540
 541 int
 542 ips_ffdc_reset(ips_softc_t *sc)
 543 {
 544         ips_cmd_status_t *status;
 545
 546         status = malloc(sizeof(ips_cmd_status_t), M_IPSBUF, M_INTWAIT | M_ZERO);
 547         if (ips_get_free_cmd(sc, ips_send_ffdc_reset_cmd, status,
 548             IPS_NOWAIT_FLAG)) {
 549                 free(status, M_IPSBUF);
 550                 device_printf(sc->dev, "ERROR: unable to get a command! "
 551                     "can't send ffdc reset!\n");
 552                 return 1;
 553         }
 554         if (COMMAND_ERROR(status)) {
 555                 free(status, M_IPSBUF);
 556                 device_printf(sc->dev, "ERROR: ffdc reset command failed!\n");
 557                 return 1;
 558         }
 559         free(status, M_IPSBUF);
 560         return 0;
 561 }
 562
 563 static void
 564 ips_write_nvram(ips_command_t *command)
 565 {
 566         ips_softc_t *sc = command->sc;
 567         ips_rw_nvram_cmd *command_struct;
 568         ips_nvram_page5 *nvram;
 569
 570         /*FIXME check for error */
 571         command->callback = ips_wakeup_callback;
 572         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
 573         command_struct->command = IPS_RW_NVRAM_CMD;
 574         command_struct->id = command->id;
 575         command_struct->pagenum = 5;
 576         command_struct->rw      = 1;    /* write */
 577         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 578             BUS_DMASYNC_POSTREAD);
 579         nvram = command->data_buffer;
 580         /* retrieve adapter info and save in sc */
 581         sc->adapter_type = nvram->adapter_type;
 582         strncpy(nvram->driver_high, IPS_VERSION_MAJOR, 4);
 583         strncpy(nvram->driver_low, IPS_VERSION_MINOR, 4);
 584         nvram->operating_system = IPS_OS_FREEBSD;
 585         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 586             BUS_DMASYNC_PREWRITE);
 587         sc->ips_issue_cmd(command);
 588 }
 589
 590 static void
 591 ips_read_nvram_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
 592                         int error)
 593 {
 594         ips_softc_t *sc;
 595         ips_command_t *command = cmdptr;
 596         ips_rw_nvram_cmd *command_struct;
 597
 598         sc = command->sc;
 599         if (error) {
 600                 ips_cmd_status_t *status = command->arg;
 601
 602                 status->value = IPS_ERROR_STATUS;
 603                 ips_insert_free_cmd(sc, command);
 604                 printf("ips: error = %d in ips_read_nvram_callback\n", error);
 605                 return;
 606         }
 607         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
 608         command_struct->command = IPS_RW_NVRAM_CMD;
 609         command_struct->id = command->id;
 610         command_struct->pagenum = 5;
 611         command_struct->rw = 0;
 612         command_struct->buffaddr = segments[0].ds_addr;
 613
 614         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 615             BUS_DMASYNC_PREWRITE);
 616         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 617             BUS_DMASYNC_PREREAD);
 618         sc->ips_issue_cmd(command);
 619 }
 620
 621 static int
 622 ips_read_nvram(ips_command_t *command)
 623 {
 624         int error = 0;
 625         ips_softc_t *sc = command->sc;
 626         ips_cmd_status_t *status = command->arg;
 627
 628         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 629                                 /* alignemnt */ 1,
 630                                 /* boundary  */ 0,
 631                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 632                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 633                                 /* filter    */ NULL,
 634                                 /* filterarg */ NULL,
 635                                 /* maxsize   */ IPS_NVRAM_PAGE_SIZE,
 636                                 /* numsegs   */ 1,
 637                                 /* maxsegsize*/ IPS_NVRAM_PAGE_SIZE,
 638                                 /* flags     */ 0,
 639                                 &command->data_dmatag) != 0) {
 640                 printf("ips: can't alloc dma tag for nvram\n");
 641                 error = ENOMEM;
 642                 goto exit;
 643         }
 644         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 645             BUS_DMA_NOWAIT, &command->data_dmamap)) {
 646                 error = ENOMEM;
 647                 goto exit;
 648         }
 649         command->callback = ips_write_nvram;
 650         IPS_LOCK(sc);
 651         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 652             command->data_buffer, IPS_NVRAM_PAGE_SIZE, ips_read_nvram_callback,
 653             command, BUS_DMA_NOWAIT);
 654         if ((status->value == IPS_ERROR_STATUS) ||
 655             ips_msleep(status, sc, 0, "ips", 0) == EWOULDBLOCK)
 656                 error = ETIMEDOUT;
 657         IPS_UNLOCK(sc);
 658         if (error == 0) {
 659                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 660                                 BUS_DMASYNC_POSTWRITE);
 661         }
 662         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 663 exit:
 664         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 665                         command->data_dmamap);
 666         bus_dma_tag_destroy(command->data_dmatag);
 667         ips_insert_free_cmd(sc, command);
 668         return error;
 669 }
 670
 671 int
 672 ips_update_nvram(ips_softc_t *sc)
 673 {
 674         ips_cmd_status_t *status;
 675
 676         status = malloc(sizeof(ips_cmd_status_t), M_IPSBUF, M_INTWAIT | M_ZERO);
 677         if (ips_get_free_cmd(sc, ips_read_nvram, status, IPS_NOWAIT_FLAG)) {
 678                 free(status, M_IPSBUF);
 679                 device_printf(sc->dev, "ERROR: unable to get a command! "
 680                     "can't update nvram\n");
 681                 return 1;
 682         }
 683         if (COMMAND_ERROR(status)) {
 684                 free(status, M_IPSBUF);
 685                 device_printf(sc->dev, "ERROR: nvram update command failed!\n");
 686                 return 1;
 687         }
 688         free(status, M_IPSBUF);
 689         return 0;
 690 }
 691
 692 static int
 693 ips_send_config_sync_cmd(ips_command_t *command)
 694 {
 695         ips_softc_t *sc = command->sc;
 696         ips_cmd_status_t *status = command->arg;
 697         ips_generic_cmd *command_struct;
 698
 699         PRINTF(10, "ips test: got a command, building flush command\n");
 700         command->callback = ips_wakeup_callback;
 701         command_struct = (ips_generic_cmd *)command->command_buffer;
 702         command_struct->command = IPS_CONFIG_SYNC_CMD;
 703         command_struct->id = command->id;
 704         command_struct->reserve2 = IPS_POCL;
 705         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 706             BUS_DMASYNC_PREWRITE);
 707         IPS_LOCK(sc);
 708         sc->ips_issue_cmd(command);
 709         if (status->value != IPS_ERROR_STATUS)
 710                 ips_msleep(status, sc, 0, "ipssyn", 0);
 711         IPS_UNLOCK(sc);
 712         ips_insert_free_cmd(sc, command);
 713         return 0;
 714 }
 715
 716 static int
 717 ips_send_error_table_cmd(ips_command_t *command)
 718 {
 719         ips_softc_t *sc = command->sc;
 720         ips_cmd_status_t *status = command->arg;
 721         ips_generic_cmd *command_struct;
 722
 723         PRINTF(10, "ips test: got a command, building errortable command\n");
 724         command->callback = ips_wakeup_callback;
 725         command_struct = (ips_generic_cmd *)command->command_buffer;
 726         command_struct->command = IPS_ERROR_TABLE_CMD;
 727         command_struct->id = command->id;
 728         command_struct->reserve2 = IPS_CSL;
 729         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 730             BUS_DMASYNC_PREWRITE);
 731         IPS_LOCK(sc);
 732         sc->ips_issue_cmd(command);
 733         if (status->value != IPS_ERROR_STATUS)
 734                 ips_msleep(status, sc, 0, "ipsetc", 0);
 735         IPS_UNLOCK(sc);
 736         ips_insert_free_cmd(sc, command);
 737         return 0;
 738 }
 739
 740 int
 741 ips_clear_adapter(ips_softc_t *sc)
 742 {
 743         ips_cmd_status_t *status;
 744
 745         status = malloc(sizeof(ips_cmd_status_t), M_IPSBUF, M_INTWAIT | M_ZERO);
 746         device_printf(sc->dev, "syncing config\n");
 747         if (ips_get_free_cmd(sc, ips_send_config_sync_cmd, status,
 748             IPS_NOWAIT_FLAG)) {
 749                 free(status, M_IPSBUF);
 750                 device_printf(sc->dev, "ERROR: unable to get a command! "
 751                     "can't sync cache!\n");
 752                 return 1;
 753         }
 754         if (COMMAND_ERROR(status)) {
 755                 free(status, M_IPSBUF);
 756                 device_printf(sc->dev, "ERROR: cache sync command failed!\n");
 757                 return 1;
 758         }
 759         device_printf(sc->dev, "clearing error table\n");
 760         if (ips_get_free_cmd(sc, ips_send_error_table_cmd, status,
 761             IPS_NOWAIT_FLAG)) {
 762                 free(status, M_IPSBUF);
 763                 device_printf(sc->dev, "ERROR: unable to get a command! "
 764                     "can't sync cache!\n");
 765                 return 1;
 766         }
 767         if (COMMAND_ERROR(status)) {
 768                 device_printf(sc->dev, "ERROR: etable command failed!\n");
 769                 free(status, M_IPSBUF);
 770                 return 1;
 771         }
 772         free(status, M_IPSBUF);
 773         return 0;
 774 }