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 <sys/sysctl.h>
  33 #include <dev/raid/ips/ips.h>
  34 #include <dev/raid/ips/ips_disk.h>
  35
  36 static int ips_debug_ignore_flush_cmd;
  37 TUNABLE_INT("debug.ips.ignore_flush_cmd", &ips_debug_ignore_flush_cmd);
  38 SYSCTL_NODE(_debug, OID_AUTO, ips, CTLFLAG_RD, 0, "");
  39 SYSCTL_INT(_debug_ips, OID_AUTO, ignore_flush_cmd, CTLFLAG_RW,
  40            &ips_debug_ignore_flush_cmd, 0,
  41            "Do not issue IPS_CACHE_FLUSH_CMD on BUF_CMD_FLUSH");
  42
  43 int
  44 ips_timed_wait(ips_command_t *command, const char *id, int timo)
  45 {
  46         int error = 0;
  47
  48         while (command->completed == 0) {
  49                 crit_enter();
  50                 if (command->completed == 0)
  51                         error = tsleep(&command->completed, 0, id, timo);
  52                 crit_exit();
  53                 if (error == EWOULDBLOCK) {
  54                         error = ETIMEDOUT;
  55                         break;
  56                 }
  57         }
  58         return(error);
  59 }
  60
  61 /*
  62  * This is an interrupt callback.  It is called from
  63  * interrupt context when the adapter has completed the
  64  * command, and wakes up anyone waiting on the command.
  65  */
  66 static void
  67 ips_wakeup_callback(ips_command_t *command)
  68 {
  69         bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
  70                         BUS_DMASYNC_POSTWRITE);
  71         command->completed = 1;
  72         wakeup(&command->completed);
  73 }
  74
  75 /*
  76  * Below are a series of functions for sending an IO request
  77  * to the adapter.  The flow order is: start, send, callback, finish.
  78  * The caller must have already assembled an iorequest struct to hold
  79  * the details of the IO request.
  80  */
  81 static void
  82 ips_io_request_finish(ips_command_t *command)
  83 {
  84         struct bio *bio = command->arg;
  85
  86         if (ips_read_request(bio)) {
  87                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
  88                                 BUS_DMASYNC_POSTREAD);
  89         } else {
  90                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
  91                                 BUS_DMASYNC_POSTWRITE);
  92         }
  93         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
  94         if (COMMAND_ERROR(&command->status)) {
  95                 bio->bio_buf->b_flags |=B_ERROR;
  96                 bio->bio_buf->b_error = EIO;
  97         }
  98         ips_insert_free_cmd(command->sc, command);
  99         ipsd_finish(bio);
 100 }
 101
 102 static void
 103 ips_io_request_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
 104                         int error)
 105 {
 106         ips_softc_t *sc;
 107         ips_command_t *command = cmdptr;
 108         ips_sg_element_t *sg_list;
 109         ips_io_cmd *command_struct;
 110         struct bio *bio = command->arg;
 111         struct buf *bp = bio->bio_buf;
 112         ipsdisk_softc_t *dsc;
 113         int i, length = 0;
 114         u_int8_t cmdtype;
 115
 116         sc = command->sc;
 117         if (error) {
 118                 kprintf("ips: error = %d in ips_sg_request_callback\n", error);
 119                 bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 120                 bp->b_flags |= B_ERROR;
 121                 bp->b_error = ENOMEM;
 122                 ips_insert_free_cmd(sc, command);
 123                 ipsd_finish(bio);
 124                 return;
 125         }
 126         dsc = bio->bio_driver_info;
 127         command_struct = (ips_io_cmd *)command->command_buffer;
 128         command_struct->id = command->id;
 129         command_struct->drivenum = dsc->sc->drives[dsc->disk_number].drivenum;
 130
 131         if (segnum != 1) {
 132                 if (ips_read_request(bio))
 133                         cmdtype = IPS_SG_READ_CMD;
 134                 else
 135                         cmdtype = IPS_SG_WRITE_CMD;
 136                 command_struct->segnum = segnum;
 137                 sg_list = (ips_sg_element_t *)((u_int8_t *)
 138                            command->command_buffer + IPS_COMMAND_LEN);
 139                 for (i = 0; i < segnum; i++) {
 140                         sg_list[i].addr = segments[i].ds_addr;
 141                         sg_list[i].len = segments[i].ds_len;
 142                         length += segments[i].ds_len;
 143                 }
 144                 command_struct->buffaddr =
 145                     (u_int32_t)command->command_phys_addr + IPS_COMMAND_LEN;
 146         } else {
 147                 if (ips_read_request(bio))
 148                         cmdtype = IPS_READ_CMD;
 149                 else
 150                         cmdtype = IPS_WRITE_CMD;
 151                 command_struct->buffaddr = segments[0].ds_addr;
 152                 length = segments[0].ds_len;
 153         }
 154         command_struct->command = cmdtype;
 155         command_struct->lba = bio->bio_offset / IPS_BLKSIZE;
 156         length = (length + IPS_BLKSIZE - 1)/IPS_BLKSIZE;
 157         command_struct->length = length;
 158         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 159                         BUS_DMASYNC_PREWRITE);
 160         if (ips_read_request(bio)) {
 161                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 162                                 BUS_DMASYNC_PREREAD);
 163         } else {
 164                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 165                                 BUS_DMASYNC_PREWRITE);
 166         }
 167         PRINTF(10, "ips test: command id: %d segments: %d "
 168                 "pblkno: %lld length: %d, ds_len: %d\n", command->id, segnum,
 169                 bio->bio_offset / IPS_BLKSIZE,
 170                 length, segments[0].ds_len);
 171
 172         sc->ips_issue_cmd(command);
 173         return;
 174 }
 175
 176 static void
 177 ips_flush_request_finish(ips_command_t *command)
 178 {
 179         ips_generic_cmd *gencmd = command->command_buffer;
 180         struct bio *bio = command->arg;
 181
 182         if (COMMAND_ERROR(&command->status)) {
 183                 device_printf(command->sc->dev,
 184                               "cmd=0x%x,st=0x%x,est=0x%x\n",
 185                               gencmd->command,
 186                               command->status.fields.basic_status,
 187                               command->status.fields.extended_status);
 188
 189                 bio->bio_buf->b_flags |= B_ERROR;
 190                 bio->bio_buf->b_error = EIO;
 191         }
 192         ips_insert_free_cmd(command->sc, command);
 193         ipsd_finish(bio);
 194 }
 195
 196 static int
 197 ips_send_flush_request(ips_command_t *command, struct bio *bio)
 198 {
 199         command->arg = bio;
 200         ips_generic_cmd *flush_cmd;
 201         ipsdisk_softc_t *dsc;
 202         ips_softc_t *sc = command->sc;
 203
 204         if (!ips_debug_ignore_flush_cmd) {
 205                 ips_insert_free_cmd(sc, command);
 206                 ipsd_finish(bio);
 207                 return 0;
 208         }
 209
 210         command->callback = ips_flush_request_finish;
 211         dsc = bio->bio_driver_info;
 212         flush_cmd = command->command_buffer;
 213         flush_cmd->command      = IPS_CACHE_FLUSH_CMD;
 214         flush_cmd->id           = command->id;
 215         flush_cmd->drivenum     = 0;
 216         flush_cmd->buffaddr     = 0;
 217         flush_cmd->lba          = 0;
 218         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 219                         BUS_DMASYNC_PREWRITE);
 220
 221         sc->ips_issue_cmd(command);
 222         return 0;
 223 }
 224
 225
 226 static int
 227 ips_send_io_request(ips_command_t *command, struct bio *bio)
 228 {
 229         struct buf *bp = bio->bio_buf;
 230
 231         command->callback = ips_io_request_finish;
 232         command->arg = bio;
 233         PRINTF(10, "ips test: : bcount %ld\n", bp->b_bcount);
 234         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 235                         bp->b_data, bp->b_bcount,
 236                         ips_io_request_callback, command, 0);
 237         return 0;
 238 }
 239
 240 void
 241 ips_start_io_request(ips_softc_t *sc)
 242 {
 243         ips_command_t *command;
 244         struct bio *bio;
 245
 246         bio = bioq_first(&sc->bio_queue);
 247         if (bio == NULL)
 248                 return;
 249         if (ips_get_free_cmd(sc, &command, 0) != 0)
 250                 return;
 251         bioq_remove(&sc->bio_queue, bio);
 252         if (bio->bio_buf->b_cmd == BUF_CMD_FLUSH)
 253                 ips_send_flush_request(command, bio);
 254         else
 255                 ips_send_io_request(command, bio);
 256 }
 257
 258 /*
 259  * Below are a series of functions for sending an adapter info request
 260  * to the adapter.  The flow order is: get, send, callback. It uses
 261  * the generic finish callback at the top of this file.
 262  * This can be used to get configuration/status info from the card
 263  */
 264 static void
 265 ips_adapter_info_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum,
 266                           int error)
 267 {
 268         ips_softc_t *sc;
 269         ips_command_t *command = cmdptr;
 270         ips_adapter_info_cmd *command_struct;
 271         sc = command->sc;
 272         if (error) {
 273                 command->status.value = IPS_ERROR_STATUS; /* a lovely error value */
 274                 ips_insert_free_cmd(sc, command);
 275                 kprintf("ips: error = %d in ips_get_adapter_info\n", error);
 276                 return;
 277         }
 278         command_struct = (ips_adapter_info_cmd *)command->command_buffer;
 279         command_struct->command = IPS_ADAPTER_INFO_CMD;
 280         command_struct->id = command->id;
 281         command_struct->buffaddr = segments[0].ds_addr;
 282
 283         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 284                         BUS_DMASYNC_PREWRITE);
 285         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 286                         BUS_DMASYNC_PREREAD);
 287         sc->ips_issue_cmd(command);
 288 }
 289
 290 static int
 291 ips_send_adapter_info_cmd(ips_command_t *command)
 292 {
 293         ips_softc_t *sc = command->sc;
 294         int error = 0;
 295
 296         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 297                                 /* alignemnt */ 1,
 298                                 /* boundary  */ 0,
 299                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 300                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 301                                 /* filter    */ NULL,
 302                                 /* filterarg */ NULL,
 303                                 /* maxsize   */ IPS_ADAPTER_INFO_LEN,
 304                                 /* numsegs   */ 1,
 305                                 /* maxsegsize*/ IPS_ADAPTER_INFO_LEN,
 306                                 /* flags     */ 0,
 307                                 &command->data_dmatag) != 0) {
 308                 kprintf("ips: can't alloc dma tag for adapter status\n");
 309                 error = ENOMEM;
 310                 goto exit;
 311         }
 312         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 313            BUS_DMA_NOWAIT, &command->data_dmamap)) {
 314                 error = ENOMEM;
 315                 goto exit;
 316         }
 317         command->callback = ips_wakeup_callback;
 318         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 319             command->data_buffer, IPS_ADAPTER_INFO_LEN,
 320             ips_adapter_info_callback, command, BUS_DMA_NOWAIT);
 321         if ((command->status.value == IPS_ERROR_STATUS) ||
 322             ips_timed_wait(command, "ips", 30 * hz) != 0)
 323                 error = ETIMEDOUT;
 324         if (error == 0) {
 325                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 326                     BUS_DMASYNC_POSTREAD);
 327                 memcpy(&(sc->adapter_info), command->data_buffer,
 328                         IPS_ADAPTER_INFO_LEN);
 329         }
 330         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 331 exit:
 332         /* I suppose I should clean up my memory allocations */
 333         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 334             command->data_dmamap);
 335         bus_dma_tag_destroy(command->data_dmatag);
 336         ips_insert_free_cmd(sc, command);
 337         return error;
 338 }
 339
 340 int
 341 ips_get_adapter_info(ips_softc_t *sc)
 342 {
 343         ips_command_t *command;
 344         int error = 0;
 345
 346         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 347                 device_printf(sc->dev, "unable to get adapter configuration\n");
 348                 return ENXIO;
 349         }
 350         ips_send_adapter_info_cmd(command);
 351         if (COMMAND_ERROR(&command->status))
 352                 error = ENXIO;
 353         return error;
 354 }
 355
 356 /*
 357  * Below are a series of functions for sending a drive info request
 358  * to the adapter.  The flow order is: get, send, callback. It uses
 359  * the generic finish callback at the top of this file.
 360  * This can be used to get drive status info from the card
 361  */
 362 static void
 363 ips_drive_info_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
 364                         int error)
 365 {
 366         ips_softc_t *sc;
 367         ips_command_t *command = cmdptr;
 368         ips_drive_cmd *command_struct;
 369
 370         sc = command->sc;
 371         if (error) {
 372
 373                 command->status.value = IPS_ERROR_STATUS;
 374                 ips_insert_free_cmd(sc, command);
 375                 kprintf("ips: error = %d in ips_get_drive_info\n", error);
 376                 return;
 377         }
 378         command_struct = (ips_drive_cmd *)command->command_buffer;
 379         command_struct->command = IPS_DRIVE_INFO_CMD;
 380         command_struct->id = command->id;
 381         command_struct->buffaddr = segments[0].ds_addr;
 382         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 383             BUS_DMASYNC_PREWRITE);
 384         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 385             BUS_DMASYNC_PREREAD);
 386         sc->ips_issue_cmd(command);
 387 }
 388
 389 static int
 390 ips_send_drive_info_cmd(ips_command_t *command)
 391 {
 392         int error = 0;
 393         ips_softc_t *sc = command->sc;
 394         ips_drive_info_t *driveinfo;
 395
 396         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 397                                 /* alignemnt */ 1,
 398                                 /* boundary  */ 0,
 399                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 400                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 401                                 /* filter    */ NULL,
 402                                 /* filterarg */ NULL,
 403                                 /* maxsize   */ IPS_DRIVE_INFO_LEN,
 404                                 /* numsegs   */ 1,
 405                                 /* maxsegsize*/ IPS_DRIVE_INFO_LEN,
 406                                 /* flags     */ 0,
 407                                 &command->data_dmatag) != 0) {
 408                 kprintf("ips: can't alloc dma tag for drive status\n");
 409                 error = ENOMEM;
 410                 goto exit;
 411         }
 412         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 413             BUS_DMA_NOWAIT, &command->data_dmamap)) {
 414                 error = ENOMEM;
 415                 goto exit;
 416         }
 417         command->callback = ips_wakeup_callback;
 418         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 419             command->data_buffer,IPS_DRIVE_INFO_LEN,
 420             ips_drive_info_callback, command, BUS_DMA_NOWAIT);
 421         if ((command->status.value == IPS_ERROR_STATUS) ||
 422             ips_timed_wait(command, "ips", 10 * hz) != 0)
 423                 error = ETIMEDOUT;
 424
 425         if (error == 0) {
 426                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 427                     BUS_DMASYNC_POSTREAD);
 428                 driveinfo = command->data_buffer;
 429                 memcpy(sc->drives, driveinfo->drives, sizeof(ips_drive_t) * 8);
 430                 sc->drivecount = driveinfo->drivecount;
 431                 device_printf(sc->dev, "logical drives: %d\n", sc->drivecount);
 432         }
 433         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 434 exit:
 435         /* I suppose I should clean up my memory allocations */
 436         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 437                         command->data_dmamap);
 438         bus_dma_tag_destroy(command->data_dmatag);
 439         ips_insert_free_cmd(sc, command);
 440         return error;
 441 }
 442
 443 int
 444 ips_get_drive_info(ips_softc_t *sc)
 445 {
 446         int error = 0;
 447         ips_command_t *command;
 448
 449         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 450                 device_printf(sc->dev, "unable to get drive configuration\n");
 451                 return ENXIO;
 452         }
 453         ips_send_drive_info_cmd(command);
 454         if (COMMAND_ERROR(&command->status))
 455                 error = ENXIO;
 456         return error;
 457 }
 458
 459 /*
 460  * Below is a pair of functions for making sure data is safely
 461  * on disk by flushing the adapter's cache.
 462  */
 463 static int
 464 ips_send_flush_cache_cmd(ips_command_t *command)
 465 {
 466         ips_softc_t *sc = command->sc;
 467         ips_generic_cmd *command_struct;
 468
 469         PRINTF(10,"ips test: got a command, building flush command\n");
 470         command->callback = ips_wakeup_callback;
 471         command_struct = (ips_generic_cmd *)command->command_buffer;
 472         command_struct->command = IPS_CACHE_FLUSH_CMD;
 473         command_struct->id = command->id;
 474         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 475             BUS_DMASYNC_PREWRITE);
 476         sc->ips_issue_cmd(command);
 477         if (command->status.value != IPS_ERROR_STATUS)
 478                 ips_timed_wait(command, "flush2", 0);
 479         ips_insert_free_cmd(sc, command);
 480         return 0;
 481 }
 482
 483 int
 484 ips_flush_cache(ips_softc_t *sc)
 485 {
 486         ips_command_t *command;
 487
 488         device_printf(sc->dev, "flushing cache\n");
 489         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 490                 device_printf(sc->dev, "ERROR: unable to get a command! "
 491                     "can't flush cache!\n");
 492                 return(1);
 493         }
 494         ips_send_flush_cache_cmd(command);
 495         if (COMMAND_ERROR(&command->status)) {
 496                 device_printf(sc->dev, "ERROR: cache flush command failed!\n");
 497                 return(1);
 498         }
 499         return 0;
 500 }
 501
 502 /*
 503  * Simplified localtime to provide timevalues for ffdc.
 504  * Taken from libc/stdtime/localtime.c
 505  */
 506 static void
 507 ips_ffdc_settime(ips_adapter_ffdc_cmd *command, time_t sctime)
 508 {
 509         long    days, rem, y;
 510         int     yleap, *ip, month;
 511         int     year_lengths[2] = { IPS_DAYSPERNYEAR, IPS_DAYSPERLYEAR };
 512         int     mon_lengths[2][IPS_MONSPERYEAR] = {
 513                 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
 514                 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
 515         };
 516
 517         days = sctime / IPS_SECSPERDAY;
 518         rem  = sctime % IPS_SECSPERDAY;
 519
 520         command->hour = rem / IPS_SECSPERHOUR;
 521         rem           = rem % IPS_SECSPERHOUR;
 522
 523         command->minute = rem / IPS_SECSPERMIN;
 524         command->second = rem % IPS_SECSPERMIN;
 525
 526         y = IPS_EPOCH_YEAR;
 527         while (days < 0 || days >= (long)year_lengths[yleap = ips_isleap(y)]) {
 528                 long    newy;
 529
 530                 newy = y + days / IPS_DAYSPERNYEAR;
 531                 if (days < 0)
 532                         --newy;
 533                 days -= (newy - y) * IPS_DAYSPERNYEAR +
 534                     IPS_LEAPS_THRU_END_OF(newy - 1) -
 535                     IPS_LEAPS_THRU_END_OF(y - 1);
 536                 y = newy;
 537         }
 538         command->yearH = y / 100;
 539         command->yearL = y % 100;
 540         ip = mon_lengths[yleap];
 541         for (month = 0; days >= (long)ip[month]; ++month)
 542                 days = days - (long)ip[month];
 543         command->month = month + 1;
 544         command->day = days + 1;
 545 }
 546
 547 static int
 548 ips_send_ffdc_reset_cmd(ips_command_t *command)
 549 {
 550         ips_softc_t *sc = command->sc;
 551         ips_adapter_ffdc_cmd *command_struct;
 552
 553         PRINTF(10, "ips test: got a command, building ffdc reset command\n");
 554         command->callback = ips_wakeup_callback;
 555         command_struct = (ips_adapter_ffdc_cmd *)command->command_buffer;
 556         command_struct->command = IPS_FFDC_CMD;
 557         command_struct->id = command->id;
 558         command_struct->reset_count = sc->ffdc_resetcount;
 559         command_struct->reset_type  = 0x0;
 560         ips_ffdc_settime(command_struct, sc->ffdc_resettime.tv_sec);
 561         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 562             BUS_DMASYNC_PREWRITE);
 563         sc->ips_issue_cmd(command);
 564         if (command->status.value != IPS_ERROR_STATUS)
 565                 ips_timed_wait(command, "ffdc", 0);
 566         ips_insert_free_cmd(sc, command);
 567         return 0;
 568 }
 569
 570 int
 571 ips_ffdc_reset(ips_softc_t *sc)
 572 {
 573         ips_command_t *command;
 574
 575         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 576                 device_printf(sc->dev, "ERROR: unable to get a command! "
 577                     "can't send ffdc reset!\n");
 578                 return 1;
 579         }
 580         ips_send_ffdc_reset_cmd(command);
 581         if (COMMAND_ERROR(&command->status)) {
 582                 /*
 583                  * apparently some cards may report error status for
 584                  * an ffdc reset command, even though it works correctly
 585                  * afterwards.  just complain about that and proceed here.
 586                  */
 587                 device_printf(sc->dev,
 588                               "ERROR: ffdc reset command failed(0x%04x)!\n",
 589                               command->status.value);
 590         }
 591         return 0;
 592 }
 593
 594 static void
 595 ips_write_nvram(ips_command_t *command)
 596 {
 597         ips_softc_t *sc = command->sc;
 598         ips_rw_nvram_cmd *command_struct;
 599         ips_nvram_page5 *nvram;
 600
 601         /*FIXME check for error */
 602         command->callback = ips_wakeup_callback;
 603         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
 604         command_struct->command = IPS_RW_NVRAM_CMD;
 605         command_struct->id = command->id;
 606         command_struct->pagenum = 5;
 607         command_struct->rw      = 1;    /* write */
 608         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 609             BUS_DMASYNC_POSTREAD);
 610         nvram = command->data_buffer;
 611         /* retrieve adapter info and save in sc */
 612         sc->adapter_type = nvram->adapter_type;
 613         strncpy(nvram->driver_high, IPS_VERSION_MAJOR, 4);
 614         strncpy(nvram->driver_low, IPS_VERSION_MINOR, 4);
 615         nvram->operating_system = IPS_OS_FREEBSD;
 616         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 617             BUS_DMASYNC_PREWRITE);
 618         sc->ips_issue_cmd(command);
 619 }
 620
 621 static void
 622 ips_read_nvram_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
 623                         int error)
 624 {
 625         ips_softc_t *sc;
 626         ips_command_t *command = cmdptr;
 627         ips_rw_nvram_cmd *command_struct;
 628
 629         sc = command->sc;
 630         if (error) {
 631                 command->status.value = IPS_ERROR_STATUS;
 632                 ips_insert_free_cmd(sc, command);
 633                 kprintf("ips: error = %d in ips_read_nvram_callback\n", error);
 634                 return;
 635         }
 636         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
 637         command_struct->command = IPS_RW_NVRAM_CMD;
 638         command_struct->id = command->id;
 639         command_struct->pagenum = 5;
 640         command_struct->rw = 0;
 641         command_struct->buffaddr = segments[0].ds_addr;
 642
 643         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 644             BUS_DMASYNC_PREWRITE);
 645         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 646             BUS_DMASYNC_PREREAD);
 647         sc->ips_issue_cmd(command);
 648 }
 649
 650 static int
 651 ips_read_nvram(ips_command_t *command)
 652 {
 653         int error = 0;
 654         ips_softc_t *sc = command->sc;
 655
 656         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 657                                 /* alignemnt */ 1,
 658                                 /* boundary  */ 0,
 659                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 660                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 661                                 /* filter    */ NULL,
 662                                 /* filterarg */ NULL,
 663                                 /* maxsize   */ IPS_NVRAM_PAGE_SIZE,
 664                                 /* numsegs   */ 1,
 665                                 /* maxsegsize*/ IPS_NVRAM_PAGE_SIZE,
 666                                 /* flags     */ 0,
 667                                 &command->data_dmatag) != 0) {
 668                 kprintf("ips: can't alloc dma tag for nvram\n");
 669                 error = ENOMEM;
 670                 goto exit;
 671         }
 672         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 673             BUS_DMA_NOWAIT, &command->data_dmamap)) {
 674                 error = ENOMEM;
 675                 goto exit;
 676         }
 677         command->callback = ips_write_nvram;
 678         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 679             command->data_buffer, IPS_NVRAM_PAGE_SIZE, ips_read_nvram_callback,
 680             command, BUS_DMA_NOWAIT);
 681         if ((command->status.value == IPS_ERROR_STATUS) ||
 682             ips_timed_wait(command, "ips", 0) != 0)
 683                 error = ETIMEDOUT;
 684         if (error == 0) {
 685                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 686                                 BUS_DMASYNC_POSTWRITE);
 687         }
 688         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 689 exit:
 690         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 691                         command->data_dmamap);
 692         bus_dma_tag_destroy(command->data_dmatag);
 693         ips_insert_free_cmd(sc, command);
 694         return error;
 695 }
 696
 697 int
 698 ips_update_nvram(ips_softc_t *sc)
 699 {
 700         ips_command_t *command;
 701
 702         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 703                 device_printf(sc->dev, "ERROR: unable to get a command! "
 704                     "can't update nvram\n");
 705                 return 1;
 706         }
 707         ips_read_nvram(command);
 708         if (COMMAND_ERROR(&command->status)) {
 709                 device_printf(sc->dev, "ERROR: nvram update command failed!\n");
 710                 return 1;
 711         }
 712         return 0;
 713 }
 714
 715 static int
 716 ips_send_config_sync_cmd(ips_command_t *command)
 717 {
 718         ips_softc_t *sc = command->sc;
 719         ips_generic_cmd *command_struct;
 720
 721         PRINTF(10, "ips test: got a command, building flush command\n");
 722         command->callback = ips_wakeup_callback;
 723         command_struct = (ips_generic_cmd *)command->command_buffer;
 724         command_struct->command = IPS_CONFIG_SYNC_CMD;
 725         command_struct->id = command->id;
 726         command_struct->reserve2 = IPS_POCL;
 727         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 728             BUS_DMASYNC_PREWRITE);
 729         sc->ips_issue_cmd(command);
 730         if (command->status.value != IPS_ERROR_STATUS)
 731                 ips_timed_wait(command, "ipssyn", 0);
 732         ips_insert_free_cmd(sc, command);
 733         return 0;
 734 }
 735
 736 static int
 737 ips_send_error_table_cmd(ips_command_t *command)
 738 {
 739         ips_softc_t *sc = command->sc;
 740         ips_generic_cmd *command_struct;
 741
 742         PRINTF(10, "ips test: got a command, building errortable command\n");
 743         command->callback = ips_wakeup_callback;
 744         command_struct = (ips_generic_cmd *)command->command_buffer;
 745         command_struct->command = IPS_ERROR_TABLE_CMD;
 746         command_struct->id = command->id;
 747         command_struct->reserve2 = IPS_CSL;
 748         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 749             BUS_DMASYNC_PREWRITE);
 750         sc->ips_issue_cmd(command);
 751         if (command->status.value != IPS_ERROR_STATUS)
 752                 ips_timed_wait(command, "ipsetc", 0);
 753         ips_insert_free_cmd(sc, command);
 754         return 0;
 755 }
 756
 757 int
 758 ips_clear_adapter(ips_softc_t *sc)
 759 {
 760         ips_command_t *command;
 761
 762         device_printf(sc->dev, "syncing config\n");
 763         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 764                 device_printf(sc->dev, "ERROR: unable to get a command! "
 765                     "can't sync cache!\n");
 766                 return 1;
 767         }
 768         ips_send_config_sync_cmd(command);
 769         if (COMMAND_ERROR(&command->status)) {
 770                 device_printf(sc->dev, "ERROR: cache sync command failed!\n");
 771                 return 1;
 772         }
 773         device_printf(sc->dev, "clearing error table\n");
 774         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 775                 device_printf(sc->dev, "ERROR: unable to get a command! "
 776                     "can't sync cache!\n");
 777                 return 1;
 778         }
 779         ips_send_error_table_cmd(command);
 780         if (COMMAND_ERROR(&command->status)) {
 781                 device_printf(sc->dev, "ERROR: etable command failed!\n");
 782                 return 1;
 783         }
 784         return 0;
 785 }