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