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 1.13 2006/12/22 23:26:23 swildner Exp $
  29  */
  30
  31 #include <sys/devicestat.h>
  32 #include <dev/raid/ips/ips.h>
  33 #include <dev/raid/ips/ips_disk.h>
  34
  35 int
  36 ips_timed_wait(ips_command_t *command, const char *id, int timo)
  37 {
  38         int error = 0;
  39
  40         while (command->completed == 0) {
  41                 crit_enter();
  42                 if (command->completed == 0)
  43                         error = tsleep(&command->completed, 0, id, timo);
  44                 crit_exit();
  45                 if (error == EWOULDBLOCK) {
  46                         error = ETIMEDOUT;
  47                         break;
  48                 }
  49         }
  50         return(error);
  51 }
  52
  53 /*
  54  * This is an interrupt callback.  It is called from
  55  * interrupt context when the adapter has completed the
  56  * command, and wakes up anyone waiting on the command.
  57  */
  58 static void
  59 ips_wakeup_callback(ips_command_t *command)
  60 {
  61         bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
  62                         BUS_DMASYNC_POSTWRITE);
  63         command->completed = 1;
  64         wakeup(&command->completed);
  65 }
  66
  67 /*
  68  * Below are a series of functions for sending an IO request
  69  * to the adapter.  The flow order is: start, send, callback, finish.
  70  * The caller must have already assembled an iorequest struct to hold
  71  * the details of the IO request.
  72  */
  73 static void
  74 ips_io_request_finish(ips_command_t *command)
  75 {
  76         struct bio *bio = command->arg;
  77
  78         if (ips_read_request(bio)) {
  79                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
  80                                 BUS_DMASYNC_POSTREAD);
  81         } else {
  82                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
  83                                 BUS_DMASYNC_POSTWRITE);
  84         }
  85         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
  86         if (COMMAND_ERROR(&command->status)) {
  87                 bio->bio_buf->b_flags |=B_ERROR;
  88                 bio->bio_buf->b_error = EIO;
  89         }
  90         ips_insert_free_cmd(command->sc, command);
  91         ipsd_finish(bio);
  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 *bio = command->arg;
 103         struct buf *bp = bio->bio_buf;
 104         ipsdisk_softc_t *dsc;
 105         int i, length = 0;
 106         u_int8_t cmdtype;
 107
 108         sc = command->sc;
 109         if (error) {
 110                 kprintf("ips: error = %d in ips_sg_request_callback\n", error);
 111                 bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 112                 bp->b_flags |= B_ERROR;
 113                 bp->b_error = ENOMEM;
 114                 ips_insert_free_cmd(sc, command);
 115                 ipsd_finish(bio);
 116                 return;
 117         }
 118         dsc = bio->bio_driver_info;
 119         command_struct = (ips_io_cmd *)command->command_buffer;
 120         command_struct->id = command->id;
 121         command_struct->drivenum = dsc->sc->drives[dsc->disk_number].drivenum;
 122
 123         if (segnum != 1) {
 124                 if (ips_read_request(bio))
 125                         cmdtype = IPS_SG_READ_CMD;
 126                 else
 127                         cmdtype = IPS_SG_WRITE_CMD;
 128                 command_struct->segnum = segnum;
 129                 sg_list = (ips_sg_element_t *)((u_int8_t *)
 130                            command->command_buffer + IPS_COMMAND_LEN);
 131                 for (i = 0; i < segnum; i++) {
 132                         sg_list[i].addr = segments[i].ds_addr;
 133                         sg_list[i].len = segments[i].ds_len;
 134                         length += segments[i].ds_len;
 135                 }
 136                 command_struct->buffaddr =
 137                     (u_int32_t)command->command_phys_addr + IPS_COMMAND_LEN;
 138         } else {
 139                 if (ips_read_request(bio))
 140                         cmdtype = IPS_READ_CMD;
 141                 else
 142                         cmdtype = IPS_WRITE_CMD;
 143                 command_struct->buffaddr = segments[0].ds_addr;
 144                 length = segments[0].ds_len;
 145         }
 146         command_struct->command = cmdtype;
 147         command_struct->lba = bio->bio_offset / IPS_BLKSIZE;
 148         length = (length + IPS_BLKSIZE - 1)/IPS_BLKSIZE;
 149         command_struct->length = length;
 150         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 151                         BUS_DMASYNC_PREWRITE);
 152         if (ips_read_request(bio)) {
 153                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 154                                 BUS_DMASYNC_PREREAD);
 155         } else {
 156                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 157                                 BUS_DMASYNC_PREWRITE);
 158         }
 159         /*
 160          * the cast to long long below is necessary because our b_pblkno
 161          * is 32bit wide whereas it's 64bit on FreeBSD-CURRENT.
 162          */
 163         PRINTF(10, "ips test: command id: %d segments: %d "
 164                 "pblkno: %lld length: %d, ds_len: %d\n", command->id, segnum,
 165                 bio->bio_offset / IPS_BLKSIZE,
 166                 length, segments[0].ds_len);
 167
 168         sc->ips_issue_cmd(command);
 169         return;
 170 }
 171
 172 static int
 173 ips_send_io_request(ips_command_t *command, struct bio *bio)
 174 {
 175         struct buf *bp = bio->bio_buf;
 176
 177         command->callback = ips_io_request_finish;
 178         command->arg = bio;
 179         PRINTF(10, "ips test: : bcount %ld\n", bp->b_bcount);
 180         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 181                         bp->b_data, bp->b_bcount,
 182                         ips_io_request_callback, command, 0);
 183         return 0;
 184 }
 185
 186 void
 187 ips_start_io_request(ips_softc_t *sc)
 188 {
 189         ips_command_t *command;
 190         struct bio *bio;
 191
 192         bio = bioq_first(&sc->bio_queue);
 193         if (bio == NULL)
 194                 return;
 195         if (ips_get_free_cmd(sc, &command, 0) != 0)
 196                 return;
 197         bioq_remove(&sc->bio_queue, bio);
 198         ips_send_io_request(command, bio);
 199 }
 200
 201 /*
 202  * Below are a series of functions for sending an adapter info request
 203  * to the adapter.  The flow order is: get, send, callback. It uses
 204  * the generic finish callback at the top of this file.
 205  * This can be used to get configuration/status info from the card
 206  */
 207 static void
 208 ips_adapter_info_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum,
 209                           int error)
 210 {
 211         ips_softc_t *sc;
 212         ips_command_t *command = cmdptr;
 213         ips_adapter_info_cmd *command_struct;
 214         sc = command->sc;
 215         if (error) {
 216                 command->status.value = IPS_ERROR_STATUS; /* a lovely error value */
 217                 ips_insert_free_cmd(sc, command);
 218                 kprintf("ips: error = %d in ips_get_adapter_info\n", error);
 219                 return;
 220         }
 221         command_struct = (ips_adapter_info_cmd *)command->command_buffer;
 222         command_struct->command = IPS_ADAPTER_INFO_CMD;
 223         command_struct->id = command->id;
 224         command_struct->buffaddr = segments[0].ds_addr;
 225
 226         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 227                         BUS_DMASYNC_PREWRITE);
 228         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 229                         BUS_DMASYNC_PREREAD);
 230         sc->ips_issue_cmd(command);
 231 }
 232
 233 static int
 234 ips_send_adapter_info_cmd(ips_command_t *command)
 235 {
 236         ips_softc_t *sc = command->sc;
 237         int error = 0;
 238
 239         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 240                                 /* alignemnt */ 1,
 241                                 /* boundary  */ 0,
 242                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 243                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 244                                 /* filter    */ NULL,
 245                                 /* filterarg */ NULL,
 246                                 /* maxsize   */ IPS_ADAPTER_INFO_LEN,
 247                                 /* numsegs   */ 1,
 248                                 /* maxsegsize*/ IPS_ADAPTER_INFO_LEN,
 249                                 /* flags     */ 0,
 250                                 &command->data_dmatag) != 0) {
 251                 kprintf("ips: can't alloc dma tag for adapter status\n");
 252                 error = ENOMEM;
 253                 goto exit;
 254         }
 255         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 256            BUS_DMA_NOWAIT, &command->data_dmamap)) {
 257                 error = ENOMEM;
 258                 goto exit;
 259         }
 260         command->callback = ips_wakeup_callback;
 261         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 262             command->data_buffer, IPS_ADAPTER_INFO_LEN,
 263             ips_adapter_info_callback, command, BUS_DMA_NOWAIT);
 264         if ((command->status.value == IPS_ERROR_STATUS) ||
 265             ips_timed_wait(command, "ips", 30 * hz) != 0)
 266                 error = ETIMEDOUT;
 267         if (error == 0) {
 268                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 269                     BUS_DMASYNC_POSTREAD);
 270                 memcpy(&(sc->adapter_info), command->data_buffer,
 271                         IPS_ADAPTER_INFO_LEN);
 272         }
 273         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 274 exit:
 275         /* I suppose I should clean up my memory allocations */
 276         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 277             command->data_dmamap);
 278         bus_dma_tag_destroy(command->data_dmatag);
 279         ips_insert_free_cmd(sc, command);
 280         return error;
 281 }
 282
 283 int
 284 ips_get_adapter_info(ips_softc_t *sc)
 285 {
 286         ips_command_t *command;
 287         int error = 0;
 288
 289         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 290                 device_printf(sc->dev, "unable to get adapter configuration\n");
 291                 return ENXIO;
 292         }
 293         ips_send_adapter_info_cmd(command);
 294         if (COMMAND_ERROR(&command->status))
 295                 error = ENXIO;
 296         return error;
 297 }
 298
 299 /*
 300  * Below are a series of functions for sending a drive info request
 301  * to the adapter.  The flow order is: get, send, callback. It uses
 302  * the generic finish callback at the top of this file.
 303  * This can be used to get drive status info from the card
 304  */
 305 static void
 306 ips_drive_info_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
 307                         int error)
 308 {
 309         ips_softc_t *sc;
 310         ips_command_t *command = cmdptr;
 311         ips_drive_cmd *command_struct;
 312
 313         sc = command->sc;
 314         if (error) {
 315
 316                 command->status.value = IPS_ERROR_STATUS;
 317                 ips_insert_free_cmd(sc, command);
 318                 kprintf("ips: error = %d in ips_get_drive_info\n", error);
 319                 return;
 320         }
 321         command_struct = (ips_drive_cmd *)command->command_buffer;
 322         command_struct->command = IPS_DRIVE_INFO_CMD;
 323         command_struct->id = command->id;
 324         command_struct->buffaddr = segments[0].ds_addr;
 325         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 326             BUS_DMASYNC_PREWRITE);
 327         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 328             BUS_DMASYNC_PREREAD);
 329         sc->ips_issue_cmd(command);
 330 }
 331
 332 static int
 333 ips_send_drive_info_cmd(ips_command_t *command)
 334 {
 335         int error = 0;
 336         ips_softc_t *sc = command->sc;
 337         ips_drive_info_t *driveinfo;
 338
 339         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 340                                 /* alignemnt */ 1,
 341                                 /* boundary  */ 0,
 342                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 343                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 344                                 /* filter    */ NULL,
 345                                 /* filterarg */ NULL,
 346                                 /* maxsize   */ IPS_DRIVE_INFO_LEN,
 347                                 /* numsegs   */ 1,
 348                                 /* maxsegsize*/ IPS_DRIVE_INFO_LEN,
 349                                 /* flags     */ 0,
 350                                 &command->data_dmatag) != 0) {
 351                 kprintf("ips: can't alloc dma tag for drive status\n");
 352                 error = ENOMEM;
 353                 goto exit;
 354         }
 355         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 356             BUS_DMA_NOWAIT, &command->data_dmamap)) {
 357                 error = ENOMEM;
 358                 goto exit;
 359         }
 360         command->callback = ips_wakeup_callback;
 361         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 362             command->data_buffer,IPS_DRIVE_INFO_LEN,
 363             ips_drive_info_callback, command, BUS_DMA_NOWAIT);
 364         if ((command->status.value == IPS_ERROR_STATUS) ||
 365             ips_timed_wait(command, "ips", 10 * hz) != 0)
 366                 error = ETIMEDOUT;
 367
 368         if (error == 0) {
 369                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 370                     BUS_DMASYNC_POSTREAD);
 371                 driveinfo = command->data_buffer;
 372                 memcpy(sc->drives, driveinfo->drives, sizeof(ips_drive_t) * 8);
 373                 sc->drivecount = driveinfo->drivecount;
 374                 device_printf(sc->dev, "logical drives: %d\n", sc->drivecount);
 375         }
 376         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 377 exit:
 378         /* I suppose I should clean up my memory allocations */
 379         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 380                         command->data_dmamap);
 381         bus_dma_tag_destroy(command->data_dmatag);
 382         ips_insert_free_cmd(sc, command);
 383         return error;
 384 }
 385
 386 int
 387 ips_get_drive_info(ips_softc_t *sc)
 388 {
 389         int error = 0;
 390         ips_command_t *command;
 391
 392         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 393                 device_printf(sc->dev, "unable to get drive configuration\n");
 394                 return ENXIO;
 395         }
 396         ips_send_drive_info_cmd(command);
 397         if (COMMAND_ERROR(&command->status))
 398                 error = ENXIO;
 399         return error;
 400 }
 401
 402 /*
 403  * Below is a pair of functions for making sure data is safely
 404  * on disk by flushing the adapter's cache.
 405  */
 406 static int
 407 ips_send_flush_cache_cmd(ips_command_t *command)
 408 {
 409         ips_softc_t *sc = command->sc;
 410         ips_generic_cmd *command_struct;
 411
 412         PRINTF(10,"ips test: got a command, building flush command\n");
 413         command->callback = ips_wakeup_callback;
 414         command_struct = (ips_generic_cmd *)command->command_buffer;
 415         command_struct->command = IPS_CACHE_FLUSH_CMD;
 416         command_struct->id = command->id;
 417         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 418             BUS_DMASYNC_PREWRITE);
 419         sc->ips_issue_cmd(command);
 420         if (command->status.value != IPS_ERROR_STATUS)
 421                 ips_timed_wait(command, "flush2", 0);
 422         ips_insert_free_cmd(sc, command);
 423         return 0;
 424 }
 425
 426 int
 427 ips_flush_cache(ips_softc_t *sc)
 428 {
 429         ips_command_t *command;
 430
 431         device_printf(sc->dev, "flushing cache\n");
 432         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 433                 device_printf(sc->dev, "ERROR: unable to get a command! "
 434                     "can't flush cache!\n");
 435                 return(1);
 436         }
 437         ips_send_flush_cache_cmd(command);
 438         if (COMMAND_ERROR(&command->status)) {
 439                 device_printf(sc->dev, "ERROR: cache flush command failed!\n");
 440                 return(1);
 441         }
 442         return 0;
 443 }
 444
 445 /*
 446  * Simplified localtime to provide timevalues for ffdc.
 447  * Taken from libc/stdtime/localtime.c
 448  */
 449 static void
 450 ips_ffdc_settime(ips_adapter_ffdc_cmd *command, time_t sctime)
 451 {
 452         long    days, rem, y;
 453         int     yleap, *ip, month;
 454         int     year_lengths[2] = { IPS_DAYSPERNYEAR, IPS_DAYSPERLYEAR };
 455         int     mon_lengths[2][IPS_MONSPERYEAR] = {
 456                 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
 457                 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
 458         };
 459
 460         days = sctime / IPS_SECSPERDAY;
 461         rem  = sctime % IPS_SECSPERDAY;
 462
 463         command->hour = rem / IPS_SECSPERHOUR;
 464         rem           = rem % IPS_SECSPERHOUR;
 465
 466         command->minute = rem / IPS_SECSPERMIN;
 467         command->second = rem % IPS_SECSPERMIN;
 468
 469         y = IPS_EPOCH_YEAR;
 470         while (days < 0 || days >= (long)year_lengths[yleap = ips_isleap(y)]) {
 471                 long    newy;
 472
 473                 newy = y + days / IPS_DAYSPERNYEAR;
 474                 if (days < 0)
 475                         --newy;
 476                 days -= (newy - y) * IPS_DAYSPERNYEAR +
 477                     IPS_LEAPS_THRU_END_OF(newy - 1) -
 478                     IPS_LEAPS_THRU_END_OF(y - 1);
 479                 y = newy;
 480         }
 481         command->yearH = y / 100;
 482         command->yearL = y % 100;
 483         ip = mon_lengths[yleap];
 484         for (month = 0; days >= (long)ip[month]; ++month)
 485                 days = days - (long)ip[month];
 486         command->month = month + 1;
 487         command->day = days + 1;
 488 }
 489
 490 static int
 491 ips_send_ffdc_reset_cmd(ips_command_t *command)
 492 {
 493         ips_softc_t *sc = command->sc;
 494         ips_adapter_ffdc_cmd *command_struct;
 495
 496         PRINTF(10, "ips test: got a command, building ffdc reset command\n");
 497         command->callback = ips_wakeup_callback;
 498         command_struct = (ips_adapter_ffdc_cmd *)command->command_buffer;
 499         command_struct->command = IPS_FFDC_CMD;
 500         command_struct->id = command->id;
 501         command_struct->reset_count = sc->ffdc_resetcount;
 502         command_struct->reset_type  = 0x0;
 503         ips_ffdc_settime(command_struct, sc->ffdc_resettime.tv_sec);
 504         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 505             BUS_DMASYNC_PREWRITE);
 506         sc->ips_issue_cmd(command);
 507         if (command->status.value != IPS_ERROR_STATUS)
 508                 ips_timed_wait(command, "ffdc", 0);
 509         ips_insert_free_cmd(sc, command);
 510         return 0;
 511 }
 512
 513 int
 514 ips_ffdc_reset(ips_softc_t *sc)
 515 {
 516         ips_command_t *command;
 517
 518         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 519                 device_printf(sc->dev, "ERROR: unable to get a command! "
 520                     "can't send ffdc reset!\n");
 521                 return 1;
 522         }
 523         ips_send_ffdc_reset_cmd(command);
 524         if (COMMAND_ERROR(&command->status)) {
 525                 /*
 526                  * apparently some cards may report error status for
 527                  * an ffdc reset command, even though it works correctly
 528                  * afterwards.  just complain about that and proceed here.
 529                  */
 530                 device_printf(sc->dev,
 531                               "ERROR: ffdc reset command failed(0x%04x)!\n",
 532                               command->status.value);
 533         }
 534         return 0;
 535 }
 536
 537 static void
 538 ips_write_nvram(ips_command_t *command)
 539 {
 540         ips_softc_t *sc = command->sc;
 541         ips_rw_nvram_cmd *command_struct;
 542         ips_nvram_page5 *nvram;
 543
 544         /*FIXME check for error */
 545         command->callback = ips_wakeup_callback;
 546         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
 547         command_struct->command = IPS_RW_NVRAM_CMD;
 548         command_struct->id = command->id;
 549         command_struct->pagenum = 5;
 550         command_struct->rw      = 1;    /* write */
 551         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 552             BUS_DMASYNC_POSTREAD);
 553         nvram = command->data_buffer;
 554         /* retrieve adapter info and save in sc */
 555         sc->adapter_type = nvram->adapter_type;
 556         strncpy(nvram->driver_high, IPS_VERSION_MAJOR, 4);
 557         strncpy(nvram->driver_low, IPS_VERSION_MINOR, 4);
 558         nvram->operating_system = IPS_OS_FREEBSD;
 559         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 560             BUS_DMASYNC_PREWRITE);
 561         sc->ips_issue_cmd(command);
 562 }
 563
 564 static void
 565 ips_read_nvram_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
 566                         int error)
 567 {
 568         ips_softc_t *sc;
 569         ips_command_t *command = cmdptr;
 570         ips_rw_nvram_cmd *command_struct;
 571
 572         sc = command->sc;
 573         if (error) {
 574                 command->status.value = IPS_ERROR_STATUS;
 575                 ips_insert_free_cmd(sc, command);
 576                 kprintf("ips: error = %d in ips_read_nvram_callback\n", error);
 577                 return;
 578         }
 579         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
 580         command_struct->command = IPS_RW_NVRAM_CMD;
 581         command_struct->id = command->id;
 582         command_struct->pagenum = 5;
 583         command_struct->rw = 0;
 584         command_struct->buffaddr = segments[0].ds_addr;
 585
 586         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 587             BUS_DMASYNC_PREWRITE);
 588         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 589             BUS_DMASYNC_PREREAD);
 590         sc->ips_issue_cmd(command);
 591 }
 592
 593 static int
 594 ips_read_nvram(ips_command_t *command)
 595 {
 596         int error = 0;
 597         ips_softc_t *sc = command->sc;
 598
 599         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 600                                 /* alignemnt */ 1,
 601                                 /* boundary  */ 0,
 602                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 603                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 604                                 /* filter    */ NULL,
 605                                 /* filterarg */ NULL,
 606                                 /* maxsize   */ IPS_NVRAM_PAGE_SIZE,
 607                                 /* numsegs   */ 1,
 608                                 /* maxsegsize*/ IPS_NVRAM_PAGE_SIZE,
 609                                 /* flags     */ 0,
 610                                 &command->data_dmatag) != 0) {
 611                 kprintf("ips: can't alloc dma tag for nvram\n");
 612                 error = ENOMEM;
 613                 goto exit;
 614         }
 615         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 616             BUS_DMA_NOWAIT, &command->data_dmamap)) {
 617                 error = ENOMEM;
 618                 goto exit;
 619         }
 620         command->callback = ips_write_nvram;
 621         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 622             command->data_buffer, IPS_NVRAM_PAGE_SIZE, ips_read_nvram_callback,
 623             command, BUS_DMA_NOWAIT);
 624         if ((command->status.value == IPS_ERROR_STATUS) ||
 625             ips_timed_wait(command, "ips", 0) != 0)
 626                 error = ETIMEDOUT;
 627         if (error == 0) {
 628                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 629                                 BUS_DMASYNC_POSTWRITE);
 630         }
 631         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 632 exit:
 633         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 634                         command->data_dmamap);
 635         bus_dma_tag_destroy(command->data_dmatag);
 636         ips_insert_free_cmd(sc, command);
 637         return error;
 638 }
 639
 640 int
 641 ips_update_nvram(ips_softc_t *sc)
 642 {
 643         ips_command_t *command;
 644
 645         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 646                 device_printf(sc->dev, "ERROR: unable to get a command! "
 647                     "can't update nvram\n");
 648                 return 1;
 649         }
 650         ips_read_nvram(command);
 651         if (COMMAND_ERROR(&command->status)) {
 652                 device_printf(sc->dev, "ERROR: nvram update command failed!\n");
 653                 return 1;
 654         }
 655         return 0;
 656 }
 657
 658 static int
 659 ips_send_config_sync_cmd(ips_command_t *command)
 660 {
 661         ips_softc_t *sc = command->sc;
 662         ips_generic_cmd *command_struct;
 663
 664         PRINTF(10, "ips test: got a command, building flush command\n");
 665         command->callback = ips_wakeup_callback;
 666         command_struct = (ips_generic_cmd *)command->command_buffer;
 667         command_struct->command = IPS_CONFIG_SYNC_CMD;
 668         command_struct->id = command->id;
 669         command_struct->reserve2 = IPS_POCL;
 670         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 671             BUS_DMASYNC_PREWRITE);
 672         sc->ips_issue_cmd(command);
 673         if (command->status.value != IPS_ERROR_STATUS)
 674                 ips_timed_wait(command, "ipssyn", 0);
 675         ips_insert_free_cmd(sc, command);
 676         return 0;
 677 }
 678
 679 static int
 680 ips_send_error_table_cmd(ips_command_t *command)
 681 {
 682         ips_softc_t *sc = command->sc;
 683         ips_generic_cmd *command_struct;
 684
 685         PRINTF(10, "ips test: got a command, building errortable command\n");
 686         command->callback = ips_wakeup_callback;
 687         command_struct = (ips_generic_cmd *)command->command_buffer;
 688         command_struct->command = IPS_ERROR_TABLE_CMD;
 689         command_struct->id = command->id;
 690         command_struct->reserve2 = IPS_CSL;
 691         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 692             BUS_DMASYNC_PREWRITE);
 693         sc->ips_issue_cmd(command);
 694         if (command->status.value != IPS_ERROR_STATUS)
 695                 ips_timed_wait(command, "ipsetc", 0);
 696         ips_insert_free_cmd(sc, command);
 697         return 0;
 698 }
 699
 700 int
 701 ips_clear_adapter(ips_softc_t *sc)
 702 {
 703         ips_command_t *command;
 704
 705         device_printf(sc->dev, "syncing config\n");
 706         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 707                 device_printf(sc->dev, "ERROR: unable to get a command! "
 708                     "can't sync cache!\n");
 709                 return 1;
 710         }
 711         ips_send_config_sync_cmd(command);
 712         if (COMMAND_ERROR(&command->status)) {
 713                 device_printf(sc->dev, "ERROR: cache sync command failed!\n");
 714                 return 1;
 715         }
 716         device_printf(sc->dev, "clearing error table\n");
 717         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 718                 device_printf(sc->dev, "ERROR: unable to get a command! "
 719                     "can't sync cache!\n");
 720                 return 1;
 721         }
 722         ips_send_error_table_cmd(command);
 723         if (COMMAND_ERROR(&command->status)) {
 724                 device_printf(sc->dev, "ERROR: etable command failed!\n");
 725                 return 1;
 726         }
 727         return 0;
 728 }