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                                 /* maxsize   */ IPS_ADAPTER_INFO_LEN,
 299                                 /* numsegs   */ 1,
 300                                 /* maxsegsize*/ IPS_ADAPTER_INFO_LEN,
 301                                 /* flags     */ 0,
 302                                 &command->data_dmatag) != 0) {
 303                 kprintf("ips: can't alloc dma tag for adapter status\n");
 304                 error = ENOMEM;
 305                 goto exit;
 306         }
 307         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 308            BUS_DMA_NOWAIT, &command->data_dmamap)) {
 309                 error = ENOMEM;
 310                 goto exit;
 311         }
 312         command->callback = ips_wakeup_callback;
 313         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 314             command->data_buffer, IPS_ADAPTER_INFO_LEN,
 315             ips_adapter_info_callback, command, BUS_DMA_NOWAIT);
 316         if ((command->status.value == IPS_ERROR_STATUS) ||
 317             ips_timed_wait(command, "ips", 30 * hz) != 0)
 318                 error = ETIMEDOUT;
 319         if (error == 0) {
 320                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 321                     BUS_DMASYNC_POSTREAD);
 322                 memcpy(&(sc->adapter_info), command->data_buffer,
 323                         IPS_ADAPTER_INFO_LEN);
 324         }
 325         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 326 exit:
 327         /* I suppose I should clean up my memory allocations */
 328         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 329             command->data_dmamap);
 330         bus_dma_tag_destroy(command->data_dmatag);
 331         ips_insert_free_cmd(sc, command);
 332         return error;
 333 }
 334
 335 int
 336 ips_get_adapter_info(ips_softc_t *sc)
 337 {
 338         ips_command_t *command;
 339         int error = 0;
 340
 341         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 342                 device_printf(sc->dev, "unable to get adapter configuration\n");
 343                 return ENXIO;
 344         }
 345         ips_send_adapter_info_cmd(command);
 346         if (COMMAND_ERROR(&command->status))
 347                 error = ENXIO;
 348         return error;
 349 }
 350
 351 /*
 352  * Below are a series of functions for sending a drive info request
 353  * to the adapter.  The flow order is: get, send, callback. It uses
 354  * the generic finish callback at the top of this file.
 355  * This can be used to get drive status info from the card
 356  */
 357 static void
 358 ips_drive_info_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
 359                         int error)
 360 {
 361         ips_softc_t *sc;
 362         ips_command_t *command = cmdptr;
 363         ips_drive_cmd *command_struct;
 364
 365         sc = command->sc;
 366         if (error) {
 367
 368                 command->status.value = IPS_ERROR_STATUS;
 369                 ips_insert_free_cmd(sc, command);
 370                 kprintf("ips: error = %d in ips_get_drive_info\n", error);
 371                 return;
 372         }
 373         command_struct = (ips_drive_cmd *)command->command_buffer;
 374         command_struct->command = IPS_DRIVE_INFO_CMD;
 375         command_struct->id = command->id;
 376         command_struct->buffaddr = segments[0].ds_addr;
 377         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 378             BUS_DMASYNC_PREWRITE);
 379         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 380             BUS_DMASYNC_PREREAD);
 381         sc->ips_issue_cmd(command);
 382 }
 383
 384 static int
 385 ips_send_drive_info_cmd(ips_command_t *command)
 386 {
 387         int error = 0;
 388         ips_softc_t *sc = command->sc;
 389         ips_drive_info_t *driveinfo;
 390
 391         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 392                                 /* alignemnt */ 1,
 393                                 /* boundary  */ 0,
 394                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 395                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 396                                 /* maxsize   */ IPS_DRIVE_INFO_LEN,
 397                                 /* numsegs   */ 1,
 398                                 /* maxsegsize*/ IPS_DRIVE_INFO_LEN,
 399                                 /* flags     */ 0,
 400                                 &command->data_dmatag) != 0) {
 401                 kprintf("ips: can't alloc dma tag for drive status\n");
 402                 error = ENOMEM;
 403                 goto exit;
 404         }
 405         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 406             BUS_DMA_NOWAIT, &command->data_dmamap)) {
 407                 error = ENOMEM;
 408                 goto exit;
 409         }
 410         command->callback = ips_wakeup_callback;
 411         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 412             command->data_buffer,IPS_DRIVE_INFO_LEN,
 413             ips_drive_info_callback, command, BUS_DMA_NOWAIT);
 414         if ((command->status.value == IPS_ERROR_STATUS) ||
 415             ips_timed_wait(command, "ips", 10 * hz) != 0)
 416                 error = ETIMEDOUT;
 417
 418         if (error == 0) {
 419                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 420                     BUS_DMASYNC_POSTREAD);
 421                 driveinfo = command->data_buffer;
 422                 memcpy(sc->drives, driveinfo->drives, sizeof(ips_drive_t) * 8);
 423                 sc->drivecount = driveinfo->drivecount;
 424                 device_printf(sc->dev, "logical drives: %d\n", sc->drivecount);
 425         }
 426         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 427 exit:
 428         /* I suppose I should clean up my memory allocations */
 429         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 430                         command->data_dmamap);
 431         bus_dma_tag_destroy(command->data_dmatag);
 432         ips_insert_free_cmd(sc, command);
 433         return error;
 434 }
 435
 436 int
 437 ips_get_drive_info(ips_softc_t *sc)
 438 {
 439         int error = 0;
 440         ips_command_t *command;
 441
 442         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 443                 device_printf(sc->dev, "unable to get drive configuration\n");
 444                 return ENXIO;
 445         }
 446         ips_send_drive_info_cmd(command);
 447         if (COMMAND_ERROR(&command->status))
 448                 error = ENXIO;
 449         return error;
 450 }
 451
 452 /*
 453  * Below is a pair of functions for making sure data is safely
 454  * on disk by flushing the adapter's cache.
 455  */
 456 static int
 457 ips_send_flush_cache_cmd(ips_command_t *command)
 458 {
 459         ips_softc_t *sc = command->sc;
 460         ips_generic_cmd *command_struct;
 461
 462         PRINTF(10,"ips test: got a command, building flush command\n");
 463         command->callback = ips_wakeup_callback;
 464         command_struct = (ips_generic_cmd *)command->command_buffer;
 465         command_struct->command = IPS_CACHE_FLUSH_CMD;
 466         command_struct->id = command->id;
 467         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 468             BUS_DMASYNC_PREWRITE);
 469         sc->ips_issue_cmd(command);
 470         if (command->status.value != IPS_ERROR_STATUS)
 471                 ips_timed_wait(command, "flush2", 0);
 472         ips_insert_free_cmd(sc, command);
 473         return 0;
 474 }
 475
 476 int
 477 ips_flush_cache(ips_softc_t *sc)
 478 {
 479         ips_command_t *command;
 480
 481         device_printf(sc->dev, "flushing cache\n");
 482         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 483                 device_printf(sc->dev, "ERROR: unable to get a command! "
 484                     "can't flush cache!\n");
 485                 return(1);
 486         }
 487         ips_send_flush_cache_cmd(command);
 488         if (COMMAND_ERROR(&command->status)) {
 489                 device_printf(sc->dev, "ERROR: cache flush command failed!\n");
 490                 return(1);
 491         }
 492         return 0;
 493 }
 494
 495 /*
 496  * Simplified localtime to provide timevalues for ffdc.
 497  * Taken from libc/stdtime/localtime.c
 498  */
 499 static void
 500 ips_ffdc_settime(ips_adapter_ffdc_cmd *command, time_t sctime)
 501 {
 502         long    days, rem, y;
 503         int     yleap, *ip, month;
 504         int     year_lengths[2] = { IPS_DAYSPERNYEAR, IPS_DAYSPERLYEAR };
 505         int     mon_lengths[2][IPS_MONSPERYEAR] = {
 506                 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
 507                 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
 508         };
 509
 510         days = sctime / IPS_SECSPERDAY;
 511         rem  = sctime % IPS_SECSPERDAY;
 512
 513         command->hour = rem / IPS_SECSPERHOUR;
 514         rem           = rem % IPS_SECSPERHOUR;
 515
 516         command->minute = rem / IPS_SECSPERMIN;
 517         command->second = rem % IPS_SECSPERMIN;
 518
 519         y = IPS_EPOCH_YEAR;
 520         while (days < 0 || days >= (long)year_lengths[yleap = ips_isleap(y)]) {
 521                 long    newy;
 522
 523                 newy = y + days / IPS_DAYSPERNYEAR;
 524                 if (days < 0)
 525                         --newy;
 526                 days -= (newy - y) * IPS_DAYSPERNYEAR +
 527                     IPS_LEAPS_THRU_END_OF(newy - 1) -
 528                     IPS_LEAPS_THRU_END_OF(y - 1);
 529                 y = newy;
 530         }
 531         command->yearH = y / 100;
 532         command->yearL = y % 100;
 533         ip = mon_lengths[yleap];
 534         for (month = 0; days >= (long)ip[month]; ++month)
 535                 days = days - (long)ip[month];
 536         command->month = month + 1;
 537         command->day = days + 1;
 538 }
 539
 540 static int
 541 ips_send_ffdc_reset_cmd(ips_command_t *command)
 542 {
 543         ips_softc_t *sc = command->sc;
 544         ips_adapter_ffdc_cmd *command_struct;
 545
 546         PRINTF(10, "ips test: got a command, building ffdc reset command\n");
 547         command->callback = ips_wakeup_callback;
 548         command_struct = (ips_adapter_ffdc_cmd *)command->command_buffer;
 549         command_struct->command = IPS_FFDC_CMD;
 550         command_struct->id = command->id;
 551         command_struct->reset_count = sc->ffdc_resetcount;
 552         command_struct->reset_type  = 0x0;
 553         ips_ffdc_settime(command_struct, sc->ffdc_resettime.tv_sec);
 554         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 555             BUS_DMASYNC_PREWRITE);
 556         sc->ips_issue_cmd(command);
 557         if (command->status.value != IPS_ERROR_STATUS)
 558                 ips_timed_wait(command, "ffdc", 0);
 559         ips_insert_free_cmd(sc, command);
 560         return 0;
 561 }
 562
 563 int
 564 ips_ffdc_reset(ips_softc_t *sc)
 565 {
 566         ips_command_t *command;
 567
 568         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 569                 device_printf(sc->dev, "ERROR: unable to get a command! "
 570                     "can't send ffdc reset!\n");
 571                 return 1;
 572         }
 573         ips_send_ffdc_reset_cmd(command);
 574         if (COMMAND_ERROR(&command->status)) {
 575                 /*
 576                  * apparently some cards may report error status for
 577                  * an ffdc reset command, even though it works correctly
 578                  * afterwards.  just complain about that and proceed here.
 579                  */
 580                 device_printf(sc->dev,
 581                               "ERROR: ffdc reset command failed(0x%04x)!\n",
 582                               command->status.value);
 583         }
 584         return 0;
 585 }
 586
 587 static void
 588 ips_write_nvram(ips_command_t *command)
 589 {
 590         ips_softc_t *sc = command->sc;
 591         ips_rw_nvram_cmd *command_struct;
 592         ips_nvram_page5 *nvram;
 593
 594         /*FIXME check for error */
 595         command->callback = ips_wakeup_callback;
 596         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
 597         command_struct->command = IPS_RW_NVRAM_CMD;
 598         command_struct->id = command->id;
 599         command_struct->pagenum = 5;
 600         command_struct->rw      = 1;    /* write */
 601         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 602             BUS_DMASYNC_POSTREAD);
 603         nvram = command->data_buffer;
 604         /* retrieve adapter info and save in sc */
 605         sc->adapter_type = nvram->adapter_type;
 606         strncpy(nvram->driver_high, IPS_VERSION_MAJOR, 4);
 607         strncpy(nvram->driver_low, IPS_VERSION_MINOR, 4);
 608         nvram->operating_system = IPS_OS_FREEBSD;
 609         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 610             BUS_DMASYNC_PREWRITE);
 611         sc->ips_issue_cmd(command);
 612 }
 613
 614 static void
 615 ips_read_nvram_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
 616                         int error)
 617 {
 618         ips_softc_t *sc;
 619         ips_command_t *command = cmdptr;
 620         ips_rw_nvram_cmd *command_struct;
 621
 622         sc = command->sc;
 623         if (error) {
 624                 command->status.value = IPS_ERROR_STATUS;
 625                 ips_insert_free_cmd(sc, command);
 626                 kprintf("ips: error = %d in ips_read_nvram_callback\n", error);
 627                 return;
 628         }
 629         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
 630         command_struct->command = IPS_RW_NVRAM_CMD;
 631         command_struct->id = command->id;
 632         command_struct->pagenum = 5;
 633         command_struct->rw = 0;
 634         command_struct->buffaddr = segments[0].ds_addr;
 635
 636         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 637             BUS_DMASYNC_PREWRITE);
 638         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 639             BUS_DMASYNC_PREREAD);
 640         sc->ips_issue_cmd(command);
 641 }
 642
 643 static int
 644 ips_read_nvram(ips_command_t *command)
 645 {
 646         int error = 0;
 647         ips_softc_t *sc = command->sc;
 648
 649         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
 650                                 /* alignemnt */ 1,
 651                                 /* boundary  */ 0,
 652                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
 653                                 /* highaddr  */ BUS_SPACE_MAXADDR,
 654                                 /* maxsize   */ IPS_NVRAM_PAGE_SIZE,
 655                                 /* numsegs   */ 1,
 656                                 /* maxsegsize*/ IPS_NVRAM_PAGE_SIZE,
 657                                 /* flags     */ 0,
 658                                 &command->data_dmatag) != 0) {
 659                 kprintf("ips: can't alloc dma tag for nvram\n");
 660                 error = ENOMEM;
 661                 goto exit;
 662         }
 663         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
 664             BUS_DMA_NOWAIT, &command->data_dmamap)) {
 665                 error = ENOMEM;
 666                 goto exit;
 667         }
 668         command->callback = ips_write_nvram;
 669         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 670             command->data_buffer, IPS_NVRAM_PAGE_SIZE, ips_read_nvram_callback,
 671             command, BUS_DMA_NOWAIT);
 672         if ((command->status.value == IPS_ERROR_STATUS) ||
 673             ips_timed_wait(command, "ips", 0) != 0)
 674                 error = ETIMEDOUT;
 675         if (error == 0) {
 676                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 677                                 BUS_DMASYNC_POSTWRITE);
 678         }
 679         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 680 exit:
 681         bus_dmamem_free(command->data_dmatag, command->data_buffer,
 682                         command->data_dmamap);
 683         bus_dma_tag_destroy(command->data_dmatag);
 684         ips_insert_free_cmd(sc, command);
 685         return error;
 686 }
 687
 688 int
 689 ips_update_nvram(ips_softc_t *sc)
 690 {
 691         ips_command_t *command;
 692
 693         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 694                 device_printf(sc->dev, "ERROR: unable to get a command! "
 695                     "can't update nvram\n");
 696                 return 1;
 697         }
 698         ips_read_nvram(command);
 699         if (COMMAND_ERROR(&command->status)) {
 700                 device_printf(sc->dev, "ERROR: nvram update command failed!\n");
 701                 return 1;
 702         }
 703         return 0;
 704 }
 705
 706 static int
 707 ips_send_config_sync_cmd(ips_command_t *command)
 708 {
 709         ips_softc_t *sc = command->sc;
 710         ips_generic_cmd *command_struct;
 711
 712         PRINTF(10, "ips test: got a command, building flush command\n");
 713         command->callback = ips_wakeup_callback;
 714         command_struct = (ips_generic_cmd *)command->command_buffer;
 715         command_struct->command = IPS_CONFIG_SYNC_CMD;
 716         command_struct->id = command->id;
 717         command_struct->reserve2 = IPS_POCL;
 718         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 719             BUS_DMASYNC_PREWRITE);
 720         sc->ips_issue_cmd(command);
 721         if (command->status.value != IPS_ERROR_STATUS)
 722                 ips_timed_wait(command, "ipssyn", 0);
 723         ips_insert_free_cmd(sc, command);
 724         return 0;
 725 }
 726
 727 static int
 728 ips_send_error_table_cmd(ips_command_t *command)
 729 {
 730         ips_softc_t *sc = command->sc;
 731         ips_generic_cmd *command_struct;
 732
 733         PRINTF(10, "ips test: got a command, building errortable command\n");
 734         command->callback = ips_wakeup_callback;
 735         command_struct = (ips_generic_cmd *)command->command_buffer;
 736         command_struct->command = IPS_ERROR_TABLE_CMD;
 737         command_struct->id = command->id;
 738         command_struct->reserve2 = IPS_CSL;
 739         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 740             BUS_DMASYNC_PREWRITE);
 741         sc->ips_issue_cmd(command);
 742         if (command->status.value != IPS_ERROR_STATUS)
 743                 ips_timed_wait(command, "ipsetc", 0);
 744         ips_insert_free_cmd(sc, command);
 745         return 0;
 746 }
 747
 748 int
 749 ips_clear_adapter(ips_softc_t *sc)
 750 {
 751         ips_command_t *command;
 752
 753         device_printf(sc->dev, "syncing config\n");
 754         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 755                 device_printf(sc->dev, "ERROR: unable to get a command! "
 756                     "can't sync cache!\n");
 757                 return 1;
 758         }
 759         ips_send_config_sync_cmd(command);
 760         if (COMMAND_ERROR(&command->status)) {
 761                 device_printf(sc->dev, "ERROR: cache sync command failed!\n");
 762                 return 1;
 763         }
 764         device_printf(sc->dev, "clearing error table\n");
 765         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
 766                 device_printf(sc->dev, "ERROR: unable to get a command! "
 767                     "can't sync cache!\n");
 768                 return 1;
 769         }
 770         ips_send_error_table_cmd(command);
 771         if (COMMAND_ERROR(&command->status)) {
 772                 device_printf(sc->dev, "ERROR: etable command failed!\n");
 773                 return 1;
 774         }
 775         return 0;
 776 }