sys/dev/buslogic/bt.c

   1 /*-
   2  * Generic driver for the BusLogic MultiMaster SCSI host adapters
   3  * Product specific probe and attach routines can be found in:
   4  * sys/dev/buslogic/bt_isa.c    BT-54X, BT-445 cards
   5  * sys/dev/buslogic/bt_mca.c    BT-64X, SDC3211B, SDC3211F
   6  * sys/dev/buslogic/bt_eisa.c   BT-74X, BT-75x cards, SDC3222F
   7  * sys/dev/buslogic/bt_pci.c    BT-946, BT-948, BT-956, BT-958 cards
   8  *
   9  * Copyright (c) 1998, 1999 Justin T. Gibbs.
  10  * All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions, and the following disclaimer,
  17  *    without modification, immediately at the beginning of the file.
  18  * 2. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  25  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include <sys/cdefs.h>
  35 __FBSDID("$FreeBSD$");
  36
  37  /*
  38   * Special thanks to Leonard N. Zubkoff for writing such a complete and
  39   * well documented Mylex/BusLogic MultiMaster driver for Linux.  Support
  40   * in this driver for the wide range of MultiMaster controllers and
  41   * firmware revisions, with their otherwise undocumented quirks, would not
  42   * have been possible without his efforts.
  43   */
  44
  45 #include <sys/param.h>
  46 #include <sys/conf.h>
  47 #include <sys/systm.h>
  48 #include <sys/malloc.h>
  49 #include <sys/kernel.h>
  50 #include <sys/lock.h>
  51 #include <sys/module.h>
  52 #include <sys/mutex.h>
  53 #include <sys/sysctl.h>
  54 #include <sys/bus.h>
  55
  56 #include <machine/bus.h>
  57 #include <sys/rman.h>
  58
  59 #include <cam/cam.h>
  60 #include <cam/cam_ccb.h>
  61 #include <cam/cam_sim.h>
  62 #include <cam/cam_xpt_sim.h>
  63 #include <cam/cam_debug.h>
  64
  65 #include <cam/scsi/scsi_message.h>
  66
  67 #include <vm/vm.h>
  68 #include <vm/pmap.h>
  69
  70 #include <dev/buslogic/btreg.h>
  71
  72 /* MailBox Management functions */
  73 static __inline void    btnextinbox(struct bt_softc *bt);
  74 static __inline void    btnextoutbox(struct bt_softc *bt);
  75
  76 static __inline void
  77 btnextinbox(struct bt_softc *bt)
  78 {
  79         if (bt->cur_inbox == bt->last_inbox)
  80                 bt->cur_inbox = bt->in_boxes;
  81         else
  82                 bt->cur_inbox++;
  83 }
  84
  85 static __inline void
  86 btnextoutbox(struct bt_softc *bt)
  87 {
  88         if (bt->cur_outbox == bt->last_outbox)
  89                 bt->cur_outbox = bt->out_boxes;
  90         else
  91                 bt->cur_outbox++;
  92 }
  93
  94 /* CCB Mangement functions */
  95 static __inline u_int32_t               btccbvtop(struct bt_softc *bt,
  96                                                   struct bt_ccb *bccb);
  97 static __inline struct bt_ccb*          btccbptov(struct bt_softc *bt,
  98                                                   u_int32_t ccb_addr);
  99 static __inline u_int32_t               btsensepaddr(struct bt_softc *bt,
 100                                                      struct bt_ccb *bccb);
 101 static __inline struct scsi_sense_data* btsensevaddr(struct bt_softc *bt,
 102                                                      struct bt_ccb *bccb);
 103
 104 static __inline u_int32_t
 105 btccbvtop(struct bt_softc *bt, struct bt_ccb *bccb)
 106 {
 107         return (bt->bt_ccb_physbase
 108               + (u_int32_t)((caddr_t)bccb - (caddr_t)bt->bt_ccb_array));
 109 }
 110
 111 static __inline struct bt_ccb *
 112 btccbptov(struct bt_softc *bt, u_int32_t ccb_addr)
 113 {
 114         return (bt->bt_ccb_array +
 115                 ((struct bt_ccb*)(uintptr_t)ccb_addr - (struct bt_ccb*)(uintptr_t)bt->bt_ccb_physbase));
 116 }
 117
 118 static __inline u_int32_t
 119 btsensepaddr(struct bt_softc *bt, struct bt_ccb *bccb)
 120 {
 121         u_int index;
 122
 123         index = (u_int)(bccb - bt->bt_ccb_array);
 124         return (bt->sense_buffers_physbase
 125                 + (index * sizeof(struct scsi_sense_data)));
 126 }
 127
 128 static __inline struct scsi_sense_data *
 129 btsensevaddr(struct bt_softc *bt, struct bt_ccb *bccb)
 130 {
 131         u_int index;
 132
 133         index = (u_int)(bccb - bt->bt_ccb_array);
 134         return (bt->sense_buffers + index);
 135 }
 136
 137 static __inline struct bt_ccb*  btgetccb(struct bt_softc *bt);
 138 static __inline void            btfreeccb(struct bt_softc *bt,
 139                                           struct bt_ccb *bccb);
 140 static void             btallocccbs(struct bt_softc *bt);
 141 static bus_dmamap_callback_t btexecuteccb;
 142 static void             btdone(struct bt_softc *bt, struct bt_ccb *bccb,
 143                                bt_mbi_comp_code_t comp_code);
 144 static void             bt_intr_locked(struct bt_softc *bt);
 145
 146 /* Host adapter command functions */
 147 static int      btreset(struct bt_softc* bt, int hard_reset);
 148
 149 /* Initialization functions */
 150 static int                      btinitmboxes(struct bt_softc *bt);
 151 static bus_dmamap_callback_t    btmapmboxes;
 152 static bus_dmamap_callback_t    btmapccbs;
 153 static bus_dmamap_callback_t    btmapsgs;
 154
 155 /* Transfer Negotiation Functions */
 156 static void btfetchtransinfo(struct bt_softc *bt,
 157                              struct ccb_trans_settings *cts);
 158
 159 /* CAM SIM entry points */
 160 #define ccb_bccb_ptr spriv_ptr0
 161 #define ccb_bt_ptr spriv_ptr1
 162 static void     btaction(struct cam_sim *sim, union ccb *ccb);
 163 static void     btpoll(struct cam_sim *sim);
 164
 165 /* Our timeout handler */
 166 static void     bttimeout(void *arg);
 167
 168 /*
 169  * XXX
 170  * Do our own re-probe protection until a configuration
 171  * manager can do it for us.  This ensures that we don't
 172  * reprobe a card already found by the EISA or PCI probes.
 173  */
 174 struct bt_isa_port bt_isa_ports[] =
 175 {
 176         { 0x130, 0, 4 },
 177         { 0x134, 0, 5 },
 178         { 0x230, 0, 2 },
 179         { 0x234, 0, 3 },
 180         { 0x330, 0, 0 },
 181         { 0x334, 0, 1 }
 182 };
 183
 184 /*
 185  * I/O ports listed in the order enumerated by the
 186  * card for certain op codes.
 187  */
 188 u_int16_t bt_board_ports[] =
 189 {
 190         0x330,
 191         0x334,
 192         0x230,
 193         0x234,
 194         0x130,
 195         0x134
 196 };
 197
 198 /* Exported functions */
 199 void
 200 bt_init_softc(device_t dev, struct resource *port,
 201               struct resource *irq, struct resource *drq)
 202 {
 203         struct bt_softc *bt = device_get_softc(dev);
 204
 205         SLIST_INIT(&bt->free_bt_ccbs);
 206         LIST_INIT(&bt->pending_ccbs);
 207         SLIST_INIT(&bt->sg_maps);
 208         bt->dev = dev;
 209         bt->port = port;
 210         bt->irq = irq;
 211         bt->drq = drq;
 212         mtx_init(&bt->lock, "bt", NULL, MTX_DEF);
 213 }
 214
 215 void
 216 bt_free_softc(device_t dev)
 217 {
 218         struct bt_softc *bt = device_get_softc(dev);
 219
 220         switch (bt->init_level) {
 221         default:
 222         case 11:
 223                 bus_dmamap_unload(bt->sense_dmat, bt->sense_dmamap);
 224         case 10:
 225                 bus_dmamem_free(bt->sense_dmat, bt->sense_buffers,
 226                                 bt->sense_dmamap);
 227         case 9:
 228                 bus_dma_tag_destroy(bt->sense_dmat);
 229         case 8:
 230         {
 231                 struct sg_map_node *sg_map;
 232
 233                 while ((sg_map = SLIST_FIRST(&bt->sg_maps))!= NULL) {
 234                         SLIST_REMOVE_HEAD(&bt->sg_maps, links);
 235                         bus_dmamap_unload(bt->sg_dmat,
 236                                           sg_map->sg_dmamap);
 237                         bus_dmamem_free(bt->sg_dmat, sg_map->sg_vaddr,
 238                                         sg_map->sg_dmamap);
 239                         free(sg_map, M_DEVBUF);
 240                 }
 241                 bus_dma_tag_destroy(bt->sg_dmat);
 242         }
 243         case 7:
 244                 bus_dmamap_unload(bt->ccb_dmat, bt->ccb_dmamap);
 245                 /* FALLTHROUGH */
 246         case 6:
 247                 bus_dmamem_free(bt->ccb_dmat, bt->bt_ccb_array,
 248                                 bt->ccb_dmamap);
 249                 /* FALLTHROUGH */
 250         case 5:
 251                 bus_dma_tag_destroy(bt->ccb_dmat);
 252                 /* FALLTHROUGH */
 253         case 4:
 254                 bus_dmamap_unload(bt->mailbox_dmat, bt->mailbox_dmamap);
 255                 /* FALLTHROUGH */
 256         case 3:
 257                 bus_dmamem_free(bt->mailbox_dmat, bt->in_boxes,
 258                                 bt->mailbox_dmamap);
 259                 /* FALLTHROUGH */
 260         case 2:
 261                 bus_dma_tag_destroy(bt->buffer_dmat);
 262                 /* FALLTHROUGH */
 263         case 1:
 264                 bus_dma_tag_destroy(bt->mailbox_dmat);
 265                 /* FALLTHROUGH */
 266         case 0:
 267                 break;
 268         }
 269         mtx_destroy(&bt->lock);
 270 }
 271
 272 int
 273 bt_port_probe(device_t dev, struct bt_probe_info *info)
 274 {
 275         struct bt_softc *bt = device_get_softc(dev);
 276         config_data_t config_data;
 277         int error;
 278
 279         /* See if there is really a card present */
 280         if (bt_probe(dev) || bt_fetch_adapter_info(dev))
 281                 return(1);
 282
 283         /*
 284          * Determine our IRQ, and DMA settings and
 285          * export them to the configuration system.
 286          */
 287         mtx_lock(&bt->lock);
 288         error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
 289                        (u_int8_t*)&config_data, sizeof(config_data),
 290                        DEFAULT_CMD_TIMEOUT);
 291         mtx_unlock(&bt->lock);
 292         if (error != 0) {
 293                 printf("bt_port_probe: Could not determine IRQ or DMA "
 294                        "settings for adapter.\n");
 295                 return (1);
 296         }
 297
 298         if (bt->model[0] == '5') {
 299                 /* DMA settings only make sense for ISA cards */
 300                 switch (config_data.dma_chan) {
 301                 case DMA_CHAN_5:
 302                         info->drq = 5;
 303                         break;
 304                 case DMA_CHAN_6:
 305                         info->drq = 6;
 306                         break;
 307                 case DMA_CHAN_7:
 308                         info->drq = 7;
 309                         break;
 310                 default:
 311                         printf("bt_port_probe: Invalid DMA setting "
 312                                "detected for adapter.\n");
 313                         return (1);
 314                 }
 315         } else {
 316                 /* VL/EISA/PCI DMA */
 317                 info->drq = -1;
 318         }
 319         switch (config_data.irq) {
 320         case IRQ_9:
 321         case IRQ_10:
 322         case IRQ_11:
 323         case IRQ_12:
 324         case IRQ_14:
 325         case IRQ_15:
 326                 info->irq = ffs(config_data.irq) + 8;
 327                 break;
 328         default:
 329                 printf("bt_port_probe: Invalid IRQ setting %x"
 330                        "detected for adapter.\n", config_data.irq);
 331                 return (1);
 332         }
 333         return (0);
 334 }
 335
 336 /*
 337  * Probe the adapter and verify that the card is a BusLogic.
 338  */
 339 int
 340 bt_probe(device_t dev)
 341 {
 342         struct bt_softc *bt = device_get_softc(dev);
 343         esetup_info_data_t esetup_info;
 344         u_int    status;
 345         u_int    intstat;
 346         u_int    geometry;
 347         int      error;
 348         u_int8_t param;
 349
 350         /*
 351          * See if the three I/O ports look reasonable.
 352          * Touch the minimal number of registers in the
 353          * failure case.
 354          */
 355         status = bt_inb(bt, STATUS_REG);
 356         if ((status == 0)
 357          || (status & (DIAG_ACTIVE|CMD_REG_BUSY|
 358                        STATUS_REG_RSVD|CMD_INVALID)) != 0) {
 359                 if (bootverbose)
 360                         device_printf(dev, "Failed Status Reg Test - %x\n",
 361                                status);
 362                 return (ENXIO);
 363         }
 364
 365         intstat = bt_inb(bt, INTSTAT_REG);
 366         if ((intstat & INTSTAT_REG_RSVD) != 0) {
 367                 device_printf(dev, "Failed Intstat Reg Test\n");
 368                 return (ENXIO);
 369         }
 370
 371         geometry = bt_inb(bt, GEOMETRY_REG);
 372         if (geometry == 0xFF) {
 373                 if (bootverbose)
 374                         device_printf(dev, "Failed Geometry Reg Test\n");
 375                 return (ENXIO);
 376         }
 377
 378         /*
 379          * Looking good so far.  Final test is to reset the
 380          * adapter and attempt to fetch the extended setup
 381          * information.  This should filter out all 1542 cards.
 382          */
 383         mtx_lock(&bt->lock);
 384         if ((error = btreset(bt, /*hard_reset*/TRUE)) != 0) {
 385                 mtx_unlock(&bt->lock);
 386                 if (bootverbose)
 387                         device_printf(dev, "Failed Reset\n");
 388                 return (ENXIO);
 389         }
 390
 391         param = sizeof(esetup_info);
 392         error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, &param, /*parmlen*/1,
 393                        (u_int8_t*)&esetup_info, sizeof(esetup_info),
 394                        DEFAULT_CMD_TIMEOUT);
 395         mtx_unlock(&bt->lock);
 396         if (error != 0) {
 397                 return (ENXIO);
 398         }
 399
 400         return (0);
 401 }
 402
 403 /*
 404  * Pull the boards setup information and record it in our softc.
 405  */
 406 int
 407 bt_fetch_adapter_info(device_t dev)
 408 {
 409         struct bt_softc *bt = device_get_softc(dev);
 410         board_id_data_t board_id;
 411         esetup_info_data_t esetup_info;
 412         config_data_t config_data;
 413         int      error;
 414         u_int8_t length_param;
 415
 416         /* First record the firmware version */
 417         mtx_lock(&bt->lock);
 418         error = bt_cmd(bt, BOP_INQUIRE_BOARD_ID, NULL, /*parmlen*/0,
 419                        (u_int8_t*)&board_id, sizeof(board_id),
 420                        DEFAULT_CMD_TIMEOUT);
 421         if (error != 0) {
 422                 mtx_unlock(&bt->lock);
 423                 device_printf(dev, "bt_fetch_adapter_info - Failed Get Board Info\n");
 424                 return (error);
 425         }
 426         bt->firmware_ver[0] = board_id.firmware_rev_major;
 427         bt->firmware_ver[1] = '.';
 428         bt->firmware_ver[2] = board_id.firmware_rev_minor;
 429         bt->firmware_ver[3] = '\0';
 430
 431         /*
 432          * Depending on the firmware major and minor version,
 433          * we may be able to fetch additional minor version info.
 434          */
 435         if (bt->firmware_ver[0] > '0') {
 436
 437                 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_3DIG, NULL, /*parmlen*/0,
 438                                (u_int8_t*)&bt->firmware_ver[3], 1,
 439                                DEFAULT_CMD_TIMEOUT);
 440                 if (error != 0) {
 441                         mtx_unlock(&bt->lock);
 442                         device_printf(dev,
 443                                       "bt_fetch_adapter_info - Failed Get "
 444                                       "Firmware 3rd Digit\n");
 445                         return (error);
 446                 }
 447                 if (bt->firmware_ver[3] == ' ')
 448                         bt->firmware_ver[3] = '\0';
 449                 bt->firmware_ver[4] = '\0';
 450         }
 451
 452         if (strcmp(bt->firmware_ver, "3.3") >= 0) {
 453
 454                 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_4DIG, NULL, /*parmlen*/0,
 455                                (u_int8_t*)&bt->firmware_ver[4], 1,
 456                                DEFAULT_CMD_TIMEOUT);
 457                 if (error != 0) {
 458                         mtx_unlock(&bt->lock);
 459                         device_printf(dev,
 460                                       "bt_fetch_adapter_info - Failed Get "
 461                                       "Firmware 4th Digit\n");
 462                         return (error);
 463                 }
 464                 if (bt->firmware_ver[4] == ' ')
 465                         bt->firmware_ver[4] = '\0';
 466                 bt->firmware_ver[5] = '\0';
 467         }
 468
 469         /*
 470          * Some boards do not handle the "recently documented"
 471          * Inquire Board Model Number command correctly or do not give
 472          * exact information.  Use the Firmware and Extended Setup
 473          * information in these cases to come up with the right answer.
 474          * The major firmware revision number indicates:
 475          *
 476          *      5.xx    BusLogic "W" Series Host Adapters:
 477          *              BT-948/958/958D
 478          *      4.xx    BusLogic "C" Series Host Adapters:
 479          *              BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
 480          *      3.xx    BusLogic "S" Series Host Adapters:
 481          *              BT-747S/747D/757S/757D/445S/545S/542D
 482          *              BT-542B/742A (revision H)
 483          *      2.xx    BusLogic "A" Series Host Adapters:
 484          *              BT-542B/742A (revision G and below)
 485          *      0.xx    AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
 486          */
 487         length_param = sizeof(esetup_info);
 488         error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, &length_param, /*parmlen*/1,
 489                        (u_int8_t*)&esetup_info, sizeof(esetup_info),
 490                        DEFAULT_CMD_TIMEOUT);
 491         if (error != 0) {
 492                 mtx_unlock(&bt->lock);
 493                 return (error);
 494         }
 495
 496         bt->bios_addr = esetup_info.bios_addr << 12;
 497
 498         bt->mailbox_addrlimit = BUS_SPACE_MAXADDR;
 499         if (esetup_info.bus_type == 'A'
 500          && bt->firmware_ver[0] == '2') {
 501                 snprintf(bt->model, sizeof(bt->model), "542B");
 502         } else if (esetup_info.bus_type == 'E'
 503                 && bt->firmware_ver[0] == '2') {
 504
 505                 /*
 506                  * The 742A seems to object if its mailboxes are
 507                  * allocated above the 16MB mark.
 508                  */
 509                 bt->mailbox_addrlimit = BUS_SPACE_MAXADDR_24BIT;
 510                 snprintf(bt->model, sizeof(bt->model), "742A");
 511         } else if (esetup_info.bus_type == 'E'
 512                 && bt->firmware_ver[0] == '0') {
 513                 /* AMI FastDisk EISA Series 441 0.x */
 514                 snprintf(bt->model, sizeof(bt->model), "747A");
 515         } else {
 516                 ha_model_data_t model_data;
 517                 int i;
 518
 519                 length_param = sizeof(model_data);
 520                 error = bt_cmd(bt, BOP_INQUIRE_MODEL, &length_param, 1,
 521                                (u_int8_t*)&model_data, sizeof(model_data),
 522                                DEFAULT_CMD_TIMEOUT);
 523                 if (error != 0) {
 524                         mtx_unlock(&bt->lock);
 525                         device_printf(dev,
 526                                       "bt_fetch_adapter_info - Failed Inquire "
 527                                       "Model Number\n");
 528                         return (error);
 529                 }
 530                 for (i = 0; i < sizeof(model_data.ascii_model); i++) {
 531                         bt->model[i] = model_data.ascii_model[i];
 532                         if (bt->model[i] == ' ')
 533                                 break;
 534                 }
 535                 bt->model[i] = '\0';
 536         }
 537
 538         bt->level_trigger_ints = esetup_info.level_trigger_ints ? 1 : 0;
 539
 540         /* SG element limits */
 541         bt->max_sg = esetup_info.max_sg;
 542
 543         /* Set feature flags */
 544         bt->wide_bus = esetup_info.wide_bus;
 545         bt->diff_bus = esetup_info.diff_bus;
 546         bt->ultra_scsi = esetup_info.ultra_scsi;
 547
 548         if ((bt->firmware_ver[0] == '5')
 549          || (bt->firmware_ver[0] == '4' && bt->wide_bus))
 550                 bt->extended_lun = TRUE;
 551
 552         bt->strict_rr = (strcmp(bt->firmware_ver, "3.31") >= 0);
 553
 554         bt->extended_trans =
 555             ((bt_inb(bt, GEOMETRY_REG) & EXTENDED_TRANSLATION) != 0);
 556
 557         /*
 558          * Determine max CCB count and whether tagged queuing is
 559          * available based on controller type. Tagged queuing
 560          * only works on 'W' series adapters, 'C' series adapters
 561          * with firmware of rev 4.42 and higher, and 'S' series
 562          * adapters with firmware of rev 3.35 and higher.  The
 563          * maximum CCB counts are as follows:
 564          *
 565          *      192     BT-948/958/958D
 566          *      100     BT-946C/956C/956CD/747C/757C/757CD/445C
 567          *      50      BT-545C/540CF
 568          *      30      BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
 569          */
 570         if (bt->firmware_ver[0] == '5') {
 571                 bt->max_ccbs = 192;
 572                 bt->tag_capable = TRUE;
 573         } else if (bt->firmware_ver[0] == '4') {
 574                 if (bt->model[0] == '5')
 575                         bt->max_ccbs = 50;
 576                 else
 577                         bt->max_ccbs = 100;
 578                 bt->tag_capable = (strcmp(bt->firmware_ver, "4.22") >= 0);
 579         } else {
 580                 bt->max_ccbs = 30;
 581                 if (bt->firmware_ver[0] == '3'
 582                  && (strcmp(bt->firmware_ver, "3.35") >= 0))
 583                         bt->tag_capable = TRUE;
 584                 else
 585                         bt->tag_capable = FALSE;
 586         }
 587
 588         if (bt->tag_capable != FALSE)
 589                 bt->tags_permitted = ALL_TARGETS;
 590
 591         /* Determine Sync/Wide/Disc settings */
 592         if (bt->firmware_ver[0] >= '4') {
 593                 auto_scsi_data_t auto_scsi_data;
 594                 fetch_lram_params_t fetch_lram_params;
 595                 int error;
 596
 597                 /*
 598                  * These settings are stored in the
 599                  * AutoSCSI data in LRAM of 'W' and 'C'
 600                  * adapters.
 601                  */
 602                 fetch_lram_params.offset = AUTO_SCSI_BYTE_OFFSET;
 603                 fetch_lram_params.response_len = sizeof(auto_scsi_data);
 604                 error = bt_cmd(bt, BOP_FETCH_LRAM,
 605                                (u_int8_t*)&fetch_lram_params,
 606                                sizeof(fetch_lram_params),
 607                                (u_int8_t*)&auto_scsi_data,
 608                                sizeof(auto_scsi_data), DEFAULT_CMD_TIMEOUT);
 609
 610                 if (error != 0) {
 611                         mtx_unlock(&bt->lock);
 612                         device_printf(dev,
 613                                       "bt_fetch_adapter_info - Failed "
 614                                       "Get Auto SCSI Info\n");
 615                         return (error);
 616                 }
 617
 618                 bt->disc_permitted = auto_scsi_data.low_disc_permitted
 619                                    | (auto_scsi_data.high_disc_permitted << 8);
 620                 bt->sync_permitted = auto_scsi_data.low_sync_permitted
 621                                    | (auto_scsi_data.high_sync_permitted << 8);
 622                 bt->fast_permitted = auto_scsi_data.low_fast_permitted
 623                                    | (auto_scsi_data.high_fast_permitted << 8);
 624                 bt->ultra_permitted = auto_scsi_data.low_ultra_permitted
 625                                    | (auto_scsi_data.high_ultra_permitted << 8);
 626                 bt->wide_permitted = auto_scsi_data.low_wide_permitted
 627                                    | (auto_scsi_data.high_wide_permitted << 8);
 628
 629                 if (bt->ultra_scsi == FALSE)
 630                         bt->ultra_permitted = 0;
 631
 632                 if (bt->wide_bus == FALSE)
 633                         bt->wide_permitted = 0;
 634         } else {
 635                 /*
 636                  * 'S' and 'A' series have this information in the setup
 637                  * information structure.
 638                  */
 639                 setup_data_t    setup_info;
 640
 641                 length_param = sizeof(setup_info);
 642                 error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, &length_param,
 643                                /*paramlen*/1, (u_int8_t*)&setup_info,
 644                                sizeof(setup_info), DEFAULT_CMD_TIMEOUT);
 645
 646                 if (error != 0) {
 647                         mtx_unlock(&bt->lock);
 648                         device_printf(dev,
 649                                       "bt_fetch_adapter_info - Failed "
 650                                       "Get Setup Info\n");
 651                         return (error);
 652                 }
 653
 654                 if (setup_info.initiate_sync != 0) {
 655                         bt->sync_permitted = ALL_TARGETS;
 656
 657                         if (bt->model[0] == '7') {
 658                                 if (esetup_info.sync_neg10MB != 0)
 659                                         bt->fast_permitted = ALL_TARGETS;
 660                                 if (strcmp(bt->model, "757") == 0)
 661                                         bt->wide_permitted = ALL_TARGETS;
 662                         }
 663                 }
 664                 bt->disc_permitted = ALL_TARGETS;
 665         }
 666
 667         /* We need as many mailboxes as we can have ccbs */
 668         bt->num_boxes = bt->max_ccbs;
 669
 670         /* Determine our SCSI ID */
 671
 672         error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
 673                        (u_int8_t*)&config_data, sizeof(config_data),
 674                        DEFAULT_CMD_TIMEOUT);
 675         mtx_unlock(&bt->lock);
 676         if (error != 0) {
 677                 device_printf(dev,
 678                               "bt_fetch_adapter_info - Failed Get Config\n");
 679                 return (error);
 680         }
 681         bt->scsi_id = config_data.scsi_id;
 682
 683         return (0);
 684 }
 685
 686 /*
 687  * Start the board, ready for normal operation
 688  */
 689 int
 690 bt_init(device_t dev)
 691 {
 692         struct bt_softc *bt = device_get_softc(dev);
 693
 694         /* Announce the Adapter */
 695         device_printf(dev, "BT-%s FW Rev. %s ", bt->model, bt->firmware_ver);
 696
 697         if (bt->ultra_scsi != 0)
 698                 printf("Ultra ");
 699
 700         if (bt->wide_bus != 0)
 701                 printf("Wide ");
 702         else
 703                 printf("Narrow ");
 704
 705         if (bt->diff_bus != 0)
 706                 printf("Diff ");
 707
 708         printf("SCSI Host Adapter, SCSI ID %d, %d CCBs\n", bt->scsi_id,
 709                bt->max_ccbs);
 710
 711         /*
 712          * Create our DMA tags.  These tags define the kinds of device
 713          * accessible memory allocations and memory mappings we will
 714          * need to perform during normal operation.
 715          *
 716          * Unless we need to further restrict the allocation, we rely
 717          * on the restrictions of the parent dmat, hence the common
 718          * use of MAXADDR and MAXSIZE.
 719          */
 720
 721         /* DMA tag for mapping buffers into device visible space. */
 722         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
 723                                 /* alignment    */ 1,
 724                                 /* boundary     */ 0,
 725                                 /* lowaddr      */ BUS_SPACE_MAXADDR,
 726                                 /* highaddr     */ BUS_SPACE_MAXADDR,
 727                                 /* filter       */ NULL,
 728                                 /* filterarg    */ NULL,
 729                                 /* maxsize      */ DFLTPHYS,
 730                                 /* nsegments    */ BT_NSEG,
 731                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
 732                                 /* flags        */ BUS_DMA_ALLOCNOW,
 733                                 /* lockfunc     */ busdma_lock_mutex,
 734                                 /* lockarg      */ &bt->lock,
 735                                 &bt->buffer_dmat) != 0) {
 736                 goto error_exit;
 737         }
 738
 739         bt->init_level++;
 740         /* DMA tag for our mailboxes */
 741         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
 742                                 /* alignment    */ 1,
 743                                 /* boundary     */ 0,
 744                                 /* lowaddr      */ bt->mailbox_addrlimit,
 745                                 /* highaddr     */ BUS_SPACE_MAXADDR,
 746                                 /* filter       */ NULL,
 747                                 /* filterarg    */ NULL,
 748                                 /* maxsize      */ bt->num_boxes *
 749                                                    (sizeof(bt_mbox_in_t) +
 750                                                     sizeof(bt_mbox_out_t)),
 751                                 /* nsegments    */ 1,
 752                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
 753                                 /* flags        */ 0,
 754                                 /* lockfunc     */ NULL,
 755                                 /* lockarg      */ NULL,
 756                                 &bt->mailbox_dmat) != 0) {
 757                 goto error_exit;
 758         }
 759
 760         bt->init_level++;
 761
 762         /* Allocation for our mailboxes */
 763         if (bus_dmamem_alloc(bt->mailbox_dmat, (void **)&bt->out_boxes,
 764                              BUS_DMA_NOWAIT, &bt->mailbox_dmamap) != 0) {
 765                 goto error_exit;
 766         }
 767
 768         bt->init_level++;
 769
 770         /* And permanently map them */
 771         bus_dmamap_load(bt->mailbox_dmat, bt->mailbox_dmamap,
 772                         bt->out_boxes,
 773                         bt->num_boxes * (sizeof(bt_mbox_in_t)
 774                                        + sizeof(bt_mbox_out_t)),
 775                         btmapmboxes, bt, /*flags*/0);
 776
 777         bt->init_level++;
 778
 779         bt->in_boxes = (bt_mbox_in_t *)&bt->out_boxes[bt->num_boxes];
 780
 781         mtx_lock(&bt->lock);
 782         btinitmboxes(bt);
 783         mtx_unlock(&bt->lock);
 784
 785         /* DMA tag for our ccb structures */
 786         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
 787                                 /* alignment    */ 1,
 788                                 /* boundary     */ 0,
 789                                 /* lowaddr      */ BUS_SPACE_MAXADDR,
 790                                 /* highaddr     */ BUS_SPACE_MAXADDR,
 791                                 /* filter       */ NULL,
 792                                 /* filterarg    */ NULL,
 793                                 /* maxsize      */ bt->max_ccbs *
 794                                                    sizeof(struct bt_ccb),
 795                                 /* nsegments    */ 1,
 796                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
 797                                 /* flags        */ 0,
 798                                 /* lockfunc     */ NULL,
 799                                 /* lockarg      */ NULL,
 800                                 &bt->ccb_dmat) != 0) {
 801                 goto error_exit;
 802         }
 803
 804         bt->init_level++;
 805
 806         /* Allocation for our ccbs */
 807         if (bus_dmamem_alloc(bt->ccb_dmat, (void **)&bt->bt_ccb_array,
 808                              BUS_DMA_NOWAIT, &bt->ccb_dmamap) != 0) {
 809                 goto error_exit;
 810         }
 811
 812         bt->init_level++;
 813
 814         /* And permanently map them */
 815         bus_dmamap_load(bt->ccb_dmat, bt->ccb_dmamap,
 816                         bt->bt_ccb_array,
 817                         bt->max_ccbs * sizeof(struct bt_ccb),
 818                         btmapccbs, bt, /*flags*/0);
 819
 820         bt->init_level++;
 821
 822         /* DMA tag for our S/G structures.  We allocate in page sized chunks */
 823         if (bus_dma_tag_create( /* parent       */ bt->parent_dmat,
 824                                 /* alignment    */ 1,
 825                                 /* boundary     */ 0,
 826                                 /* lowaddr      */ BUS_SPACE_MAXADDR,
 827                                 /* highaddr     */ BUS_SPACE_MAXADDR,
 828                                 /* filter       */ NULL,
 829                                 /* filterarg    */ NULL,
 830                                 /* maxsize      */ PAGE_SIZE,
 831                                 /* nsegments    */ 1,
 832                                 /* maxsegsz     */ BUS_SPACE_MAXSIZE_32BIT,
 833                                 /* flags        */ 0,
 834                                 /* lockfunc     */ NULL,
 835                                 /* lockarg      */ NULL,
 836                                 &bt->sg_dmat) != 0) {
 837                 goto error_exit;
 838         }
 839
 840         bt->init_level++;
 841
 842         /* Perform initial CCB allocation */
 843         bzero(bt->bt_ccb_array, bt->max_ccbs * sizeof(struct bt_ccb));
 844         btallocccbs(bt);
 845
 846         if (bt->num_ccbs == 0) {
 847                 device_printf(dev,
 848                               "bt_init - Unable to allocate initial ccbs\n");
 849                 goto error_exit;
 850         }
 851
 852         /*
 853          * Note that we are going and return (to attach)
 854          */
 855         return 0;
 856
 857 error_exit:
 858
 859         return (ENXIO);
 860 }
 861
 862 int
 863 bt_attach(device_t dev)
 864 {
 865         struct bt_softc *bt = device_get_softc(dev);
 866         int tagged_dev_openings;
 867         struct cam_devq *devq;
 868         int error;
 869
 870         /*
 871          * We reserve 1 ccb for error recovery, so don't
 872          * tell the XPT about it.
 873          */
 874         if (bt->tag_capable != 0)
 875                 tagged_dev_openings = bt->max_ccbs - 1;
 876         else
 877                 tagged_dev_openings = 0;
 878
 879         /*
 880          * Create the device queue for our SIM.
 881          */
 882         devq = cam_simq_alloc(bt->max_ccbs - 1);
 883         if (devq == NULL)
 884                 return (ENOMEM);
 885
 886         /*
 887          * Construct our SIM entry
 888          */
 889         bt->sim = cam_sim_alloc(btaction, btpoll, "bt", bt,
 890             device_get_unit(bt->dev), &bt->lock, 2, tagged_dev_openings, devq);
 891         if (bt->sim == NULL) {
 892                 cam_simq_free(devq);
 893                 return (ENOMEM);
 894         }
 895
 896         mtx_lock(&bt->lock);
 897         if (xpt_bus_register(bt->sim, dev, 0) != CAM_SUCCESS) {
 898                 cam_sim_free(bt->sim, /*free_devq*/TRUE);
 899                 mtx_unlock(&bt->lock);
 900                 return (ENXIO);
 901         }
 902
 903         if (xpt_create_path(&bt->path, /*periph*/NULL,
 904                             cam_sim_path(bt->sim), CAM_TARGET_WILDCARD,
 905                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 906                 xpt_bus_deregister(cam_sim_path(bt->sim));
 907                 cam_sim_free(bt->sim, /*free_devq*/TRUE);
 908                 mtx_unlock(&bt->lock);
 909                 return (ENXIO);
 910         }
 911         mtx_unlock(&bt->lock);
 912
 913         /*
 914          * Setup interrupt.
 915          */
 916         error = bus_setup_intr(dev, bt->irq, INTR_TYPE_CAM | INTR_ENTROPY |
 917             INTR_MPSAFE, NULL, bt_intr, bt, &bt->ih);
 918         if (error) {
 919                 device_printf(dev, "bus_setup_intr() failed: %d\n", error);
 920                 return (error);
 921         }
 922
 923         return (0);
 924 }
 925
 926 int
 927 bt_check_probed_iop(u_int ioport)
 928 {
 929         u_int i;
 930
 931         for (i = 0; i < BT_NUM_ISAPORTS; i++) {
 932                 if (bt_isa_ports[i].addr == ioport) {
 933                         if (bt_isa_ports[i].probed != 0)
 934                                 return (1);
 935                         else {
 936                                 return (0);
 937                         }
 938                 }
 939         }
 940         return (1);
 941 }
 942
 943 void
 944 bt_mark_probed_bio(isa_compat_io_t port)
 945 {
 946         if (port < BIO_DISABLED)
 947                 bt_mark_probed_iop(bt_board_ports[port]);
 948 }
 949
 950 void
 951 bt_mark_probed_iop(u_int ioport)
 952 {
 953         u_int i;
 954
 955         for (i = 0; i < BT_NUM_ISAPORTS; i++) {
 956                 if (ioport == bt_isa_ports[i].addr) {
 957                         bt_isa_ports[i].probed = 1;
 958                         break;
 959                 }
 960         }
 961 }
 962
 963 void
 964 bt_find_probe_range(int ioport, int *port_index, int *max_port_index)
 965 {
 966         if (ioport > 0) {
 967                 int i;
 968
 969                 for (i = 0;i < BT_NUM_ISAPORTS; i++)
 970                         if (ioport <= bt_isa_ports[i].addr)
 971                                 break;
 972                 if ((i >= BT_NUM_ISAPORTS)
 973                  || (ioport != bt_isa_ports[i].addr)) {
 974                         printf(
 975 "bt_find_probe_range: Invalid baseport of 0x%x specified.\n"
 976 "bt_find_probe_range: Nearest valid baseport is 0x%x.\n"
 977 "bt_find_probe_range: Failing probe.\n",
 978                                ioport,
 979                                (i < BT_NUM_ISAPORTS)
 980                                     ? bt_isa_ports[i].addr
 981                                     : bt_isa_ports[BT_NUM_ISAPORTS - 1].addr);
 982                         *port_index = *max_port_index = -1;
 983                         return;
 984                 }
 985                 *port_index = *max_port_index = bt_isa_ports[i].bio;
 986         } else {
 987                 *port_index = 0;
 988                 *max_port_index = BT_NUM_ISAPORTS - 1;
 989         }
 990 }
 991
 992 int
 993 bt_iop_from_bio(isa_compat_io_t bio_index)
 994 {
 995         if (bio_index < BT_NUM_ISAPORTS)
 996                 return (bt_board_ports[bio_index]);
 997         return (-1);
 998 }
 999
1000
1001 static void
1002 btallocccbs(struct bt_softc *bt)
1003 {
1004         struct bt_ccb *next_ccb;
1005         struct sg_map_node *sg_map;
1006         bus_addr_t physaddr;
1007         bt_sg_t *segs;
1008         int newcount;
1009         int i;
1010
1011         if (bt->num_ccbs >= bt->max_ccbs)
1012                 /* Can't allocate any more */
1013                 return;
1014
1015         next_ccb = &bt->bt_ccb_array[bt->num_ccbs];
1016
1017         sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT);
1018
1019         if (sg_map == NULL)
1020                 goto error_exit;
1021
1022         /* Allocate S/G space for the next batch of CCBS */
1023         if (bus_dmamem_alloc(bt->sg_dmat, (void **)&sg_map->sg_vaddr,
1024                              BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) {
1025                 free(sg_map, M_DEVBUF);
1026                 goto error_exit;
1027         }
1028
1029         SLIST_INSERT_HEAD(&bt->sg_maps, sg_map, links);
1030
1031         bus_dmamap_load(bt->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr,
1032                         PAGE_SIZE, btmapsgs, bt, /*flags*/0);
1033
1034         segs = sg_map->sg_vaddr;
1035         physaddr = sg_map->sg_physaddr;
1036
1037         newcount = (PAGE_SIZE / (BT_NSEG * sizeof(bt_sg_t)));
1038         for (i = 0; bt->num_ccbs < bt->max_ccbs && i < newcount; i++) {
1039                 int error;
1040
1041                 next_ccb->sg_list = segs;
1042                 next_ccb->sg_list_phys = physaddr;
1043                 next_ccb->flags = BCCB_FREE;
1044                 callout_init_mtx(&next_ccb->timer, &bt->lock, 0);
1045                 error = bus_dmamap_create(bt->buffer_dmat, /*flags*/0,
1046                                           &next_ccb->dmamap);
1047                 if (error != 0)
1048                         break;
1049                 SLIST_INSERT_HEAD(&bt->free_bt_ccbs, next_ccb, links);
1050                 segs += BT_NSEG;
1051                 physaddr += (BT_NSEG * sizeof(bt_sg_t));
1052                 next_ccb++;
1053                 bt->num_ccbs++;
1054         }
1055
1056         /* Reserve a CCB for error recovery */
1057         if (bt->recovery_bccb == NULL) {
1058                 bt->recovery_bccb = SLIST_FIRST(&bt->free_bt_ccbs);
1059                 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
1060         }
1061
1062         if (SLIST_FIRST(&bt->free_bt_ccbs) != NULL)
1063                 return;
1064
1065 error_exit:
1066         device_printf(bt->dev, "Can't malloc BCCBs\n");
1067 }
1068
1069 static __inline void
1070 btfreeccb(struct bt_softc *bt, struct bt_ccb *bccb)
1071 {
1072
1073         if (!dumping)
1074                 mtx_assert(&bt->lock, MA_OWNED);
1075         if ((bccb->flags & BCCB_ACTIVE) != 0)
1076                 LIST_REMOVE(&bccb->ccb->ccb_h, sim_links.le);
1077         if (bt->resource_shortage != 0
1078          && (bccb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
1079                 bccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1080                 bt->resource_shortage = FALSE;
1081         }
1082         bccb->flags = BCCB_FREE;
1083         SLIST_INSERT_HEAD(&bt->free_bt_ccbs, bccb, links);
1084         bt->active_ccbs--;
1085 }
1086
1087 static __inline struct bt_ccb*
1088 btgetccb(struct bt_softc *bt)
1089 {
1090         struct  bt_ccb* bccb;
1091
1092         if (!dumping)
1093                 mtx_assert(&bt->lock, MA_OWNED);
1094         if ((bccb = SLIST_FIRST(&bt->free_bt_ccbs)) != NULL) {
1095                 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
1096                 bt->active_ccbs++;
1097         } else {
1098                 btallocccbs(bt);
1099                 bccb = SLIST_FIRST(&bt->free_bt_ccbs);
1100                 if (bccb != NULL) {
1101                         SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links);
1102                         bt->active_ccbs++;
1103                 }
1104         }
1105
1106         return (bccb);
1107 }
1108
1109 static void
1110 btaction(struct cam_sim *sim, union ccb *ccb)
1111 {
1112         struct  bt_softc *bt;
1113
1114         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("btaction\n"));
1115
1116         bt = (struct bt_softc *)cam_sim_softc(sim);
1117         mtx_assert(&bt->lock, MA_OWNED);
1118
1119         switch (ccb->ccb_h.func_code) {
1120         /* Common cases first */
1121         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
1122         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
1123         {
1124                 struct  bt_ccb  *bccb;
1125                 struct  bt_hccb *hccb;
1126
1127                 /*
1128                  * get a bccb to use.
1129                  */
1130                 if ((bccb = btgetccb(bt)) == NULL) {
1131
1132                         bt->resource_shortage = TRUE;
1133                         xpt_freeze_simq(bt->sim, /*count*/1);
1134                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1135                         xpt_done(ccb);
1136                         return;
1137                 }
1138
1139                 hccb = &bccb->hccb;
1140
1141                 /*
1142                  * So we can find the BCCB when an abort is requested
1143                  */
1144                 bccb->ccb = ccb;
1145                 ccb->ccb_h.ccb_bccb_ptr = bccb;
1146                 ccb->ccb_h.ccb_bt_ptr = bt;
1147
1148                 /*
1149                  * Put all the arguments for the xfer in the bccb
1150                  */
1151                 hccb->target_id = ccb->ccb_h.target_id;
1152                 hccb->target_lun = ccb->ccb_h.target_lun;
1153                 hccb->btstat = 0;
1154                 hccb->sdstat = 0;
1155
1156                 if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
1157                         struct ccb_scsiio *csio;
1158                         struct ccb_hdr *ccbh;
1159                         int error;
1160
1161                         csio = &ccb->csio;
1162                         ccbh = &csio->ccb_h;
1163                         hccb->opcode = INITIATOR_CCB_WRESID;
1164                         hccb->datain = (ccb->ccb_h.flags & CAM_DIR_IN) ? 1 : 0;
1165                         hccb->dataout =(ccb->ccb_h.flags & CAM_DIR_OUT) ? 1 : 0;
1166                         hccb->cmd_len = csio->cdb_len;
1167                         if (hccb->cmd_len > sizeof(hccb->scsi_cdb)) {
1168                                 ccb->ccb_h.status = CAM_REQ_INVALID;
1169                                 btfreeccb(bt, bccb);
1170                                 xpt_done(ccb);
1171                                 return;
1172                         }
1173                         hccb->sense_len = csio->sense_len;
1174                         if ((ccbh->flags & CAM_TAG_ACTION_VALID) != 0
1175                          && ccb->csio.tag_action != CAM_TAG_ACTION_NONE) {
1176                                 hccb->tag_enable = TRUE;
1177                                 hccb->tag_type = (ccb->csio.tag_action & 0x3);
1178                         } else {
1179                                 hccb->tag_enable = FALSE;
1180                                 hccb->tag_type = 0;
1181                         }
1182                         if ((ccbh->flags & CAM_CDB_POINTER) != 0) {
1183                                 if ((ccbh->flags & CAM_CDB_PHYS) == 0) {
1184                                         bcopy(csio->cdb_io.cdb_ptr,
1185                                               hccb->scsi_cdb, hccb->cmd_len);
1186                                 } else {
1187                                         /* I guess I could map it in... */
1188                                         ccbh->status = CAM_REQ_INVALID;
1189                                         btfreeccb(bt, bccb);
1190                                         xpt_done(ccb);
1191                                         return;
1192                                 }
1193                         } else {
1194                                 bcopy(csio->cdb_io.cdb_bytes,
1195                                       hccb->scsi_cdb, hccb->cmd_len);
1196                         }
1197                         /* If need be, bounce our sense buffer */
1198                         if (bt->sense_buffers != NULL) {
1199                                 hccb->sense_addr = btsensepaddr(bt, bccb);
1200                         } else {
1201                                 hccb->sense_addr = vtophys(&csio->sense_data);
1202                         }
1203                         /*
1204                          * If we have any data to send with this command,
1205                          * map it into bus space.
1206                          */
1207                         error = bus_dmamap_load_ccb(
1208                             bt->buffer_dmat,
1209                             bccb->dmamap,
1210                             ccb,
1211                             btexecuteccb,
1212                             bccb,
1213                             /*flags*/0);
1214                         if (error == EINPROGRESS) {
1215                                 /*
1216                                  * So as to maintain ordering, freeze the
1217                                  * controller queue until our mapping is
1218                                  * returned.
1219                                  */
1220                                 xpt_freeze_simq(bt->sim, 1);
1221                                 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
1222                         }
1223                 } else {
1224                         hccb->opcode = INITIATOR_BUS_DEV_RESET;
1225                         /* No data transfer */
1226                         hccb->datain = TRUE;
1227                         hccb->dataout = TRUE;
1228                         hccb->cmd_len = 0;
1229                         hccb->sense_len = 0;
1230                         hccb->tag_enable = FALSE;
1231                         hccb->tag_type = 0;
1232                         btexecuteccb(bccb, NULL, 0, 0);
1233                 }
1234                 break;
1235         }
1236         case XPT_EN_LUN:                /* Enable LUN as a target */
1237         case XPT_TARGET_IO:             /* Execute target I/O request */
1238         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
1239         case XPT_CONT_TARGET_IO:        /* Continue Host Target I/O Connection*/
1240         case XPT_ABORT:                 /* Abort the specified CCB */
1241                 /* XXX Implement */
1242                 ccb->ccb_h.status = CAM_REQ_INVALID;
1243                 xpt_done(ccb);
1244                 break;
1245         case XPT_SET_TRAN_SETTINGS:
1246         {
1247                 /* XXX Implement */
1248                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
1249                 xpt_done(ccb);
1250                 break;
1251         }
1252         case XPT_GET_TRAN_SETTINGS:
1253         /* Get default/user set transfer settings for the target */
1254         {
1255                 struct  ccb_trans_settings *cts;
1256                 u_int   target_mask;
1257
1258                 cts = &ccb->cts;
1259                 target_mask = 0x01 << ccb->ccb_h.target_id;
1260                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1261                         struct ccb_trans_settings_scsi *scsi =
1262                             &cts->proto_specific.scsi;
1263                         struct ccb_trans_settings_spi *spi =
1264                             &cts->xport_specific.spi;
1265                         cts->protocol = PROTO_SCSI;
1266                         cts->protocol_version = SCSI_REV_2;
1267                         cts->transport = XPORT_SPI;
1268                         cts->transport_version = 2;
1269
1270                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1271                         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
1272
1273                         if ((bt->disc_permitted & target_mask) != 0)
1274                                 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
1275                         if ((bt->tags_permitted & target_mask) != 0)
1276                                 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
1277
1278                         if ((bt->ultra_permitted & target_mask) != 0)
1279                                 spi->sync_period = 12;
1280                         else if ((bt->fast_permitted & target_mask) != 0)
1281                                 spi->sync_period = 25;
1282                         else if ((bt->sync_permitted & target_mask) != 0)
1283                                 spi->sync_period = 50;
1284                         else
1285                                 spi->sync_period = 0;
1286
1287                         if (spi->sync_period != 0)
1288                                 spi->sync_offset = 15;
1289
1290                         spi->valid |= CTS_SPI_VALID_SYNC_RATE;
1291                         spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
1292
1293                         spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
1294                         if ((bt->wide_permitted & target_mask) != 0)
1295                                 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
1296                         else
1297                                 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
1298
1299                         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
1300                                 scsi->valid = CTS_SCSI_VALID_TQ;
1301                                 spi->valid |= CTS_SPI_VALID_DISC;
1302                         } else
1303                                 scsi->valid = 0;
1304                 } else {
1305                         btfetchtransinfo(bt, cts);
1306                 }
1307
1308                 ccb->ccb_h.status = CAM_REQ_CMP;
1309                 xpt_done(ccb);
1310                 break;
1311         }
1312         case XPT_CALC_GEOMETRY:
1313         {
1314                 struct    ccb_calc_geometry *ccg;
1315                 u_int32_t size_mb;
1316                 u_int32_t secs_per_cylinder;
1317
1318                 ccg = &ccb->ccg;
1319                 size_mb = ccg->volume_size
1320                         / ((1024L * 1024L) / ccg->block_size);
1321
1322                 if (size_mb >= 1024 && (bt->extended_trans != 0)) {
1323                         if (size_mb >= 2048) {
1324                                 ccg->heads = 255;
1325                                 ccg->secs_per_track = 63;
1326                         } else {
1327                                 ccg->heads = 128;
1328                                 ccg->secs_per_track = 32;
1329                         }
1330                 } else {
1331                         ccg->heads = 64;
1332                         ccg->secs_per_track = 32;
1333                 }
1334                 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
1335                 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
1336                 ccb->ccb_h.status = CAM_REQ_CMP;
1337                 xpt_done(ccb);
1338                 break;
1339         }
1340         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
1341         {
1342                 btreset(bt, /*hardreset*/TRUE);
1343                 ccb->ccb_h.status = CAM_REQ_CMP;
1344                 xpt_done(ccb);
1345                 break;
1346         }
1347         case XPT_TERM_IO:               /* Terminate the I/O process */
1348                 /* XXX Implement */
1349                 ccb->ccb_h.status = CAM_REQ_INVALID;
1350                 xpt_done(ccb);
1351                 break;
1352         case XPT_PATH_INQ:              /* Path routing inquiry */
1353         {
1354                 struct ccb_pathinq *cpi = &ccb->cpi;
1355
1356                 cpi->version_num = 1; /* XXX??? */
1357                 cpi->hba_inquiry = PI_SDTR_ABLE;
1358                 if (bt->tag_capable != 0)
1359                         cpi->hba_inquiry |= PI_TAG_ABLE;
1360                 if (bt->wide_bus != 0)
1361                         cpi->hba_inquiry |= PI_WIDE_16;
1362                 cpi->target_sprt = 0;
1363                 cpi->hba_misc = 0;
1364                 cpi->hba_eng_cnt = 0;
1365                 cpi->max_target = bt->wide_bus ? 15 : 7;
1366                 cpi->max_lun = 7;
1367                 cpi->initiator_id = bt->scsi_id;
1368                 cpi->bus_id = cam_sim_bus(sim);
1369                 cpi->base_transfer_speed = 3300;
1370                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
1371                 strncpy(cpi->hba_vid, "BusLogic", HBA_IDLEN);
1372                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
1373                 cpi->unit_number = cam_sim_unit(sim);
1374                 cpi->ccb_h.status = CAM_REQ_CMP;
1375                 cpi->transport = XPORT_SPI;
1376                 cpi->transport_version = 2;
1377                 cpi->protocol = PROTO_SCSI;
1378                 cpi->protocol_version = SCSI_REV_2;
1379                 xpt_done(ccb);
1380                 break;
1381         }
1382         default:
1383                 ccb->ccb_h.status = CAM_REQ_INVALID;
1384                 xpt_done(ccb);
1385                 break;
1386         }
1387 }
1388
1389 static void
1390 btexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
1391 {
1392         struct   bt_ccb *bccb;
1393         union    ccb *ccb;
1394         struct   bt_softc *bt;
1395
1396         bccb = (struct bt_ccb *)arg;
1397         ccb = bccb->ccb;
1398         bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr;
1399
1400         if (error != 0) {
1401                 if (error != EFBIG)
1402                         device_printf(bt->dev,
1403                                       "Unexepected error 0x%x returned from "
1404                                       "bus_dmamap_load\n", error);
1405                 if (ccb->ccb_h.status == CAM_REQ_INPROG) {
1406                         xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
1407                         ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN;
1408                 }
1409                 btfreeccb(bt, bccb);
1410                 xpt_done(ccb);
1411                 return;
1412         }
1413
1414         if (nseg != 0) {
1415                 bt_sg_t *sg;
1416                 bus_dma_segment_t *end_seg;
1417                 bus_dmasync_op_t op;
1418
1419                 end_seg = dm_segs + nseg;
1420
1421                 /* Copy the segments into our SG list */
1422                 sg = bccb->sg_list;
1423                 while (dm_segs < end_seg) {
1424                         sg->len = dm_segs->ds_len;
1425                         sg->addr = dm_segs->ds_addr;
1426                         sg++;
1427                         dm_segs++;
1428                 }
1429
1430                 if (nseg > 1) {
1431                         bccb->hccb.opcode = INITIATOR_SG_CCB_WRESID;
1432                         bccb->hccb.data_len = sizeof(bt_sg_t) * nseg;
1433                         bccb->hccb.data_addr = bccb->sg_list_phys;
1434                 } else {
1435                         bccb->hccb.data_len = bccb->sg_list->len;
1436                         bccb->hccb.data_addr = bccb->sg_list->addr;
1437                 }
1438
1439                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1440                         op = BUS_DMASYNC_PREREAD;
1441                 else
1442                         op = BUS_DMASYNC_PREWRITE;
1443
1444                 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op);
1445
1446         } else {
1447                 bccb->hccb.opcode = INITIATOR_CCB;
1448                 bccb->hccb.data_len = 0;
1449                 bccb->hccb.data_addr = 0;
1450         }
1451
1452         /*
1453          * Last time we need to check if this CCB needs to
1454          * be aborted.
1455          */
1456         if (ccb->ccb_h.status != CAM_REQ_INPROG) {
1457                 if (nseg != 0)
1458                         bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
1459                 btfreeccb(bt, bccb);
1460                 xpt_done(ccb);
1461                 return;
1462         }
1463
1464         bccb->flags = BCCB_ACTIVE;
1465         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1466         LIST_INSERT_HEAD(&bt->pending_ccbs, &ccb->ccb_h, sim_links.le);
1467
1468         callout_reset_sbt(&bccb->timer, SBT_1MS * ccb->ccb_h.timeout, 0,
1469             bttimeout, bccb, 0);
1470
1471         /* Tell the adapter about this command */
1472         bt->cur_outbox->ccb_addr = btccbvtop(bt, bccb);
1473         if (bt->cur_outbox->action_code != BMBO_FREE) {
1474                 /*
1475                  * We should never encounter a busy mailbox.
1476                  * If we do, warn the user, and treat it as
1477                  * a resource shortage.  If the controller is
1478                  * hung, one of the pending transactions will
1479                  * timeout causing us to start recovery operations.
1480                  */
1481                 device_printf(bt->dev,
1482                               "Encountered busy mailbox with %d out of %d "
1483                               "commands active!!!\n", bt->active_ccbs,
1484                               bt->max_ccbs);
1485                 callout_stop(&bccb->timer);
1486                 if (nseg != 0)
1487                         bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
1488                 btfreeccb(bt, bccb);
1489                 bt->resource_shortage = TRUE;
1490                 xpt_freeze_simq(bt->sim, /*count*/1);
1491                 ccb->ccb_h.status = CAM_REQUEUE_REQ;
1492                 xpt_done(ccb);
1493                 return;
1494         }
1495         bt->cur_outbox->action_code = BMBO_START;
1496         bt_outb(bt, COMMAND_REG, BOP_START_MBOX);
1497         btnextoutbox(bt);
1498 }
1499
1500 void
1501 bt_intr(void *arg)
1502 {
1503         struct  bt_softc *bt;
1504
1505         bt = arg;
1506         mtx_lock(&bt->lock);
1507         bt_intr_locked(bt);
1508         mtx_unlock(&bt->lock);
1509 }
1510
1511 void
1512 bt_intr_locked(struct bt_softc *bt)
1513 {
1514         u_int   intstat;
1515
1516         while (((intstat = bt_inb(bt, INTSTAT_REG)) & INTR_PENDING) != 0) {
1517
1518                 if ((intstat & CMD_COMPLETE) != 0) {
1519                         bt->latched_status = bt_inb(bt, STATUS_REG);
1520                         bt->command_cmp = TRUE;
1521                 }
1522
1523                 bt_outb(bt, CONTROL_REG, RESET_INTR);
1524
1525                 if ((intstat & IMB_LOADED) != 0) {
1526                         while (bt->cur_inbox->comp_code != BMBI_FREE) {
1527                                 btdone(bt,
1528                                        btccbptov(bt, bt->cur_inbox->ccb_addr),
1529                                        bt->cur_inbox->comp_code);
1530                                 bt->cur_inbox->comp_code = BMBI_FREE;
1531                                 btnextinbox(bt);
1532                         }
1533                 }
1534
1535                 if ((intstat & SCSI_BUS_RESET) != 0) {
1536                         btreset(bt, /*hardreset*/FALSE);
1537                 }
1538         }
1539 }
1540
1541 static void
1542 btdone(struct bt_softc *bt, struct bt_ccb *bccb, bt_mbi_comp_code_t comp_code)
1543 {
1544         union  ccb        *ccb;
1545         struct ccb_scsiio *csio;
1546
1547         ccb = bccb->ccb;
1548         csio = &bccb->ccb->csio;
1549
1550         if ((bccb->flags & BCCB_ACTIVE) == 0) {
1551                 device_printf(bt->dev,
1552                               "btdone - Attempt to free non-active BCCB %p\n",
1553                               (void *)bccb);
1554                 return;
1555         }
1556
1557         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1558                 bus_dmasync_op_t op;
1559
1560                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1561                         op = BUS_DMASYNC_POSTREAD;
1562                 else
1563                         op = BUS_DMASYNC_POSTWRITE;
1564                 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op);
1565                 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap);
1566         }
1567
1568         if (bccb == bt->recovery_bccb) {
1569                 /*
1570                  * The recovery BCCB does not have a CCB associated
1571                  * with it, so short circuit the normal error handling.
1572                  * We now traverse our list of pending CCBs and process
1573                  * any that were terminated by the recovery CCBs action.
1574                  * We also reinstate timeouts for all remaining, pending,
1575                  * CCBs.
1576                  */
1577                 struct cam_path *path;
1578                 struct ccb_hdr *ccb_h;
1579                 cam_status error;
1580
1581                 /* Notify all clients that a BDR occurred */
1582                 error = xpt_create_path(&path, /*periph*/NULL,
1583                                         cam_sim_path(bt->sim),
1584                                         bccb->hccb.target_id,
1585                                         CAM_LUN_WILDCARD);
1586
1587                 if (error == CAM_REQ_CMP) {
1588                         xpt_async(AC_SENT_BDR, path, NULL);
1589                         xpt_free_path(path);
1590                 }
1591
1592                 ccb_h = LIST_FIRST(&bt->pending_ccbs);
1593                 while (ccb_h != NULL) {
1594                         struct bt_ccb *pending_bccb;
1595
1596                         pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
1597                         if (pending_bccb->hccb.target_id
1598                          == bccb->hccb.target_id) {
1599                                 pending_bccb->hccb.btstat = BTSTAT_HA_BDR;
1600                                 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
1601                                 btdone(bt, pending_bccb, BMBI_ERROR);
1602                         } else {
1603                                 callout_reset_sbt(&pending_bccb->timer,
1604                                     SBT_1MS * ccb_h->timeout, 0, bttimeout,
1605                                     pending_bccb, 0);
1606                                 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
1607                         }
1608                 }
1609                 device_printf(bt->dev, "No longer in timeout\n");
1610                 return;
1611         }
1612
1613         callout_stop(&bccb->timer);
1614
1615         switch (comp_code) {
1616         case BMBI_FREE:
1617                 device_printf(bt->dev,
1618                               "btdone - CCB completed with free status!\n");
1619                 break;
1620         case BMBI_NOT_FOUND:
1621                 device_printf(bt->dev,
1622                               "btdone - CCB Abort failed to find CCB\n");
1623                 break;
1624         case BMBI_ABORT:
1625         case BMBI_ERROR:
1626                 if (bootverbose) {
1627                         printf("bt: ccb %p - error %x occurred.  "
1628                                "btstat = %x, sdstat = %x\n",
1629                                (void *)bccb, comp_code, bccb->hccb.btstat,
1630                                bccb->hccb.sdstat);
1631                 }
1632                 /* An error occurred */
1633                 switch(bccb->hccb.btstat) {
1634                 case BTSTAT_DATARUN_ERROR:
1635                         if (bccb->hccb.data_len == 0) {
1636                                 /*
1637                                  * At least firmware 4.22, does this
1638                                  * for a QUEUE FULL condition.
1639                                  */
1640                                 bccb->hccb.sdstat = SCSI_STATUS_QUEUE_FULL;
1641                         } else if (bccb->hccb.data_len < 0) {
1642                                 csio->ccb_h.status = CAM_DATA_RUN_ERR;
1643                                 break;
1644                         }
1645                         /* FALLTHROUGH */
1646                 case BTSTAT_NOERROR:
1647                 case BTSTAT_LINKED_CMD_COMPLETE:
1648                 case BTSTAT_LINKED_CMD_FLAG_COMPLETE:
1649                 case BTSTAT_DATAUNDERUN_ERROR:
1650
1651                         csio->scsi_status = bccb->hccb.sdstat;
1652                         csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
1653                         switch(csio->scsi_status) {
1654                         case SCSI_STATUS_CHECK_COND:
1655                         case SCSI_STATUS_CMD_TERMINATED:
1656                                 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
1657                                 /* Bounce sense back if necessary */
1658                                 if (bt->sense_buffers != NULL) {
1659                                         csio->sense_data =
1660                                             *btsensevaddr(bt, bccb);
1661                                 }
1662                                 break;
1663                         default:
1664                                 break;
1665                         case SCSI_STATUS_OK:
1666                                 csio->ccb_h.status = CAM_REQ_CMP;
1667                                 break;
1668                         }
1669                         csio->resid = bccb->hccb.data_len;
1670                         break;
1671                 case BTSTAT_SELTIMEOUT:
1672                         csio->ccb_h.status = CAM_SEL_TIMEOUT;
1673                         break;
1674                 case BTSTAT_UNEXPECTED_BUSFREE:
1675                         csio->ccb_h.status = CAM_UNEXP_BUSFREE;
1676                         break;
1677                 case BTSTAT_INVALID_PHASE:
1678                         csio->ccb_h.status = CAM_SEQUENCE_FAIL;
1679                         break;
1680                 case BTSTAT_INVALID_ACTION_CODE:
1681                         panic("%s: Inavlid Action code", bt_name(bt));
1682                         break;
1683                 case BTSTAT_INVALID_OPCODE:
1684                         panic("%s: Inavlid CCB Opcode code", bt_name(bt));
1685                         break;
1686                 case BTSTAT_LINKED_CCB_LUN_MISMATCH:
1687                         /* We don't even support linked commands... */
1688                         panic("%s: Linked CCB Lun Mismatch", bt_name(bt));
1689                         break;
1690                 case BTSTAT_INVALID_CCB_OR_SG_PARAM:
1691                         panic("%s: Invalid CCB or SG list", bt_name(bt));
1692                         break;
1693                 case BTSTAT_AUTOSENSE_FAILED:
1694                         csio->ccb_h.status = CAM_AUTOSENSE_FAIL;
1695                         break;
1696                 case BTSTAT_TAGGED_MSG_REJECTED:
1697                 {
1698                         struct ccb_trans_settings neg;
1699                         struct ccb_trans_settings_scsi *scsi =
1700                             &neg.proto_specific.scsi;
1701
1702                         neg.protocol = PROTO_SCSI;
1703                         neg.protocol_version = SCSI_REV_2;
1704                         neg.transport = XPORT_SPI;
1705                         neg.transport_version = 2;
1706                         scsi->valid = CTS_SCSI_VALID_TQ;
1707                         scsi->flags = 0;
1708                         xpt_print_path(csio->ccb_h.path);
1709                         printf("refuses tagged commands.  Performing "
1710                                "non-tagged I/O\n");
1711                         xpt_setup_ccb(&neg.ccb_h, csio->ccb_h.path,
1712                                       /*priority*/1);
1713                         xpt_async(AC_TRANSFER_NEG, csio->ccb_h.path, &neg);
1714                         bt->tags_permitted &= ~(0x01 << csio->ccb_h.target_id);
1715                         csio->ccb_h.status = CAM_MSG_REJECT_REC;
1716                         break;
1717                 }
1718                 case BTSTAT_UNSUPPORTED_MSG_RECEIVED:
1719                         /*
1720                          * XXX You would think that this is
1721                          *     a recoverable error... Hmmm.
1722                          */
1723                         csio->ccb_h.status = CAM_REQ_CMP_ERR;
1724                         break;
1725                 case BTSTAT_HA_SOFTWARE_ERROR:
1726                 case BTSTAT_HA_WATCHDOG_ERROR:
1727                 case BTSTAT_HARDWARE_FAILURE:
1728                         /* Hardware reset ??? Can we recover ??? */
1729                         csio->ccb_h.status = CAM_NO_HBA;
1730                         break;
1731                 case BTSTAT_TARGET_IGNORED_ATN:
1732                 case BTSTAT_OTHER_SCSI_BUS_RESET:
1733                 case BTSTAT_HA_SCSI_BUS_RESET:
1734                         if ((csio->ccb_h.status & CAM_STATUS_MASK)
1735                          != CAM_CMD_TIMEOUT)
1736                                 csio->ccb_h.status = CAM_SCSI_BUS_RESET;
1737                         break;
1738                 case BTSTAT_HA_BDR:
1739                         if ((bccb->flags & BCCB_DEVICE_RESET) == 0)
1740                                 csio->ccb_h.status = CAM_BDR_SENT;
1741                         else
1742                                 csio->ccb_h.status = CAM_CMD_TIMEOUT;
1743                         break;
1744                 case BTSTAT_INVALID_RECONNECT:
1745                 case BTSTAT_ABORT_QUEUE_GENERATED:
1746                         csio->ccb_h.status = CAM_REQ_TERMIO;
1747                         break;
1748                 case BTSTAT_SCSI_PERROR_DETECTED:
1749                         csio->ccb_h.status = CAM_UNCOR_PARITY;
1750                         break;
1751                 }
1752                 if (csio->ccb_h.status != CAM_REQ_CMP) {
1753                         xpt_freeze_devq(csio->ccb_h.path, /*count*/1);
1754                         csio->ccb_h.status |= CAM_DEV_QFRZN;
1755                 }
1756                 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0)
1757                         ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1758                 btfreeccb(bt, bccb);
1759                 xpt_done(ccb);
1760                 break;
1761         case BMBI_OK:
1762                 /* All completed without incident */
1763                 ccb->ccb_h.status |= CAM_REQ_CMP;
1764                 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0)
1765                         ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1766                 btfreeccb(bt, bccb);
1767                 xpt_done(ccb);
1768                 break;
1769         }
1770 }
1771
1772 static int
1773 btreset(struct bt_softc* bt, int hard_reset)
1774 {
1775         struct   ccb_hdr *ccb_h;
1776         u_int    status;
1777         u_int    timeout;
1778         u_int8_t reset_type;
1779
1780         if (hard_reset != 0)
1781                 reset_type = HARD_RESET;
1782         else
1783                 reset_type = SOFT_RESET;
1784         bt_outb(bt, CONTROL_REG, reset_type);
1785
1786         /* Wait 5sec. for Diagnostic start */
1787         timeout = 5 * 10000;
1788         while (--timeout) {
1789                 status = bt_inb(bt, STATUS_REG);
1790                 if ((status & DIAG_ACTIVE) != 0)
1791                         break;
1792                 DELAY(100);
1793         }
1794         if (timeout == 0) {
1795                 if (bootverbose)
1796                         device_printf(bt->dev,
1797                             "btreset - Diagnostic Active failed to "
1798                             "assert. status = 0x%x\n", status);
1799                 return (ETIMEDOUT);
1800         }
1801
1802         /* Wait 10sec. for Diagnostic end */
1803         timeout = 10 * 10000;
1804         while (--timeout) {
1805                 status = bt_inb(bt, STATUS_REG);
1806                 if ((status & DIAG_ACTIVE) == 0)
1807                         break;
1808                 DELAY(100);
1809         }
1810         if (timeout == 0) {
1811                 panic("%s: btreset - Diagnostic Active failed to drop. "
1812                        "status = 0x%x\n", bt_name(bt), status);
1813                 return (ETIMEDOUT);
1814         }
1815
1816         /* Wait for the host adapter to become ready or report a failure */
1817         timeout = 10000;
1818         while (--timeout) {
1819                 status = bt_inb(bt, STATUS_REG);
1820                 if ((status & (DIAG_FAIL|HA_READY|DATAIN_REG_READY)) != 0)
1821                         break;
1822                 DELAY(100);
1823         }
1824         if (timeout == 0) {
1825                 device_printf(bt->dev,
1826                     "btreset - Host adapter failed to come ready. "
1827                     "status = 0x%x\n", status);
1828                 return (ETIMEDOUT);
1829         }
1830
1831         /* If the diagnostics failed, tell the user */
1832         if ((status & DIAG_FAIL) != 0
1833          || (status & HA_READY) == 0) {
1834                 device_printf(bt->dev,
1835                     "btreset - Adapter failed diagnostics\n");
1836
1837                 if ((status & DATAIN_REG_READY) != 0)
1838                         device_printf(bt->dev,
1839                             "btreset - Host Adapter Error code = 0x%x\n",
1840                             bt_inb(bt, DATAIN_REG));
1841                 return (ENXIO);
1842         }
1843
1844         /* If we've allocated mailboxes, initialize them */
1845         if (bt->init_level > 4)
1846                 btinitmboxes(bt);
1847
1848         /* If we've attached to the XPT, tell it about the event */
1849         if (bt->path != NULL)
1850                 xpt_async(AC_BUS_RESET, bt->path, NULL);
1851
1852         /*
1853          * Perform completion processing for all outstanding CCBs.
1854          */
1855         while ((ccb_h = LIST_FIRST(&bt->pending_ccbs)) != NULL) {
1856                 struct bt_ccb *pending_bccb;
1857
1858                 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
1859                 pending_bccb->hccb.btstat = BTSTAT_HA_SCSI_BUS_RESET;
1860                 btdone(bt, pending_bccb, BMBI_ERROR);
1861         }
1862
1863         return (0);
1864 }
1865
1866 /*
1867  * Send a command to the adapter.
1868  */
1869 int
1870 bt_cmd(struct bt_softc *bt, bt_op_t opcode, u_int8_t *params, u_int param_len,
1871       u_int8_t *reply_data, u_int reply_len, u_int cmd_timeout)
1872 {
1873         u_int   timeout;
1874         u_int   status;
1875         u_int   saved_status;
1876         u_int   intstat;
1877         u_int   reply_buf_size;
1878         int     cmd_complete;
1879         int     error;
1880
1881         /* No data returned to start */
1882         reply_buf_size = reply_len;
1883         reply_len = 0;
1884         intstat = 0;
1885         cmd_complete = 0;
1886         saved_status = 0;
1887         error = 0;
1888
1889         bt->command_cmp = 0;
1890         /*
1891          * Wait up to 10 sec. for the adapter to become
1892          * ready to accept commands.
1893          */
1894         timeout = 100000;
1895         while (--timeout) {
1896                 status = bt_inb(bt, STATUS_REG);
1897                 if ((status & HA_READY) != 0
1898                  && (status & CMD_REG_BUSY) == 0)
1899                         break;
1900                 /*
1901                  * Throw away any pending data which may be
1902                  * left over from earlier commands that we
1903                  * timedout on.
1904                  */
1905                 if ((status & DATAIN_REG_READY) != 0)
1906                         (void)bt_inb(bt, DATAIN_REG);
1907                 DELAY(100);
1908         }
1909         if (timeout == 0) {
1910                 device_printf(bt->dev,
1911                     "bt_cmd: Timeout waiting for adapter ready, "
1912                     "status = 0x%x\n", status);
1913                 return (ETIMEDOUT);
1914         }
1915
1916         /*
1917          * Send the opcode followed by any necessary parameter bytes.
1918          */
1919         bt_outb(bt, COMMAND_REG, opcode);
1920
1921         /*
1922          * Wait for up to 1sec for each byte of the
1923          * parameter list sent to be sent.
1924          */
1925         timeout = 10000;
1926         while (param_len && --timeout) {
1927                 DELAY(100);
1928                 status = bt_inb(bt, STATUS_REG);
1929                 intstat = bt_inb(bt, INTSTAT_REG);
1930
1931                 if ((intstat & (INTR_PENDING|CMD_COMPLETE))
1932                  == (INTR_PENDING|CMD_COMPLETE)) {
1933                         saved_status = status;
1934                         cmd_complete = 1;
1935                         break;
1936                 }
1937                 if (bt->command_cmp != 0) {
1938                         saved_status = bt->latched_status;
1939                         cmd_complete = 1;
1940                         break;
1941                 }
1942                 if ((status & DATAIN_REG_READY) != 0)
1943                         break;
1944                 if ((status & CMD_REG_BUSY) == 0) {
1945                         bt_outb(bt, COMMAND_REG, *params++);
1946                         param_len--;
1947                         timeout = 10000;
1948                 }
1949         }
1950         if (timeout == 0) {
1951                 device_printf(bt->dev, "bt_cmd: Timeout sending parameters, "
1952                     "status = 0x%x\n", status);
1953                 cmd_complete = 1;
1954                 saved_status = status;
1955                 error = ETIMEDOUT;
1956         }
1957
1958         /*
1959          * Wait for the command to complete.
1960          */
1961         while (cmd_complete == 0 && --cmd_timeout) {
1962
1963                 status = bt_inb(bt, STATUS_REG);
1964                 intstat = bt_inb(bt, INTSTAT_REG);
1965                 /*
1966                  * It may be that this command was issued with
1967                  * controller interrupts disabled.  We'll never
1968                  * get to our command if an incoming mailbox
1969                  * interrupt is pending, so take care of completed
1970                  * mailbox commands by calling our interrupt handler.
1971                  */
1972                 if ((intstat & (INTR_PENDING|IMB_LOADED))
1973                  == (INTR_PENDING|IMB_LOADED))
1974                         bt_intr_locked(bt);
1975
1976                 if (bt->command_cmp != 0) {
1977                         /*
1978                          * Our interrupt handler saw CMD_COMPLETE
1979                          * status before we did.
1980                          */
1981                         cmd_complete = 1;
1982                         saved_status = bt->latched_status;
1983                 } else if ((intstat & (INTR_PENDING|CMD_COMPLETE))
1984                         == (INTR_PENDING|CMD_COMPLETE)) {
1985                         /*
1986                          * Our poll (in case interrupts are blocked)
1987                          * saw the CMD_COMPLETE interrupt.
1988                          */
1989                         cmd_complete = 1;
1990                         saved_status = status;
1991                 } else if (opcode == BOP_MODIFY_IO_ADDR
1992                         && (status & CMD_REG_BUSY) == 0) {
1993                         /*
1994                          * The BOP_MODIFY_IO_ADDR does not issue a CMD_COMPLETE,
1995                          * but it should update the status register.  So, we
1996                          * consider this command complete when the CMD_REG_BUSY
1997                          * status clears.
1998                          */
1999                         saved_status = status;
2000                         cmd_complete = 1;
2001                 } else if ((status & DATAIN_REG_READY) != 0) {
2002                         u_int8_t data;
2003
2004                         data = bt_inb(bt, DATAIN_REG);
2005                         if (reply_len < reply_buf_size) {
2006                                 *reply_data++ = data;
2007                         } else {
2008                                 device_printf(bt->dev,
2009                                     "bt_cmd - Discarded reply data byte "
2010                                     "for opcode 0x%x\n", opcode);
2011                         }
2012                         /*
2013                          * Reset timeout to ensure at least a second
2014                          * between response bytes.
2015                          */
2016                         cmd_timeout = MAX(cmd_timeout, 10000);
2017                         reply_len++;
2018
2019                 } else if ((opcode == BOP_FETCH_LRAM)
2020                         && (status & HA_READY) != 0) {
2021                                 saved_status = status;
2022                                 cmd_complete = 1;
2023                 }
2024                 DELAY(100);
2025         }
2026         if (cmd_timeout == 0) {
2027                 device_printf(bt->dev,
2028                     "bt_cmd: Timeout waiting for command (%x) "
2029                     "to complete.\n", opcode);
2030                 device_printf(bt->dev, "status = 0x%x, intstat = 0x%x, "
2031                     "rlen %d\n", status, intstat, reply_len);
2032                 error = (ETIMEDOUT);
2033         }
2034
2035         /*
2036          * Clear any pending interrupts.
2037          */
2038         bt_intr_locked(bt);
2039
2040         if (error != 0)
2041                 return (error);
2042
2043         /*
2044          * If the command was rejected by the controller, tell the caller.
2045          */
2046         if ((saved_status & CMD_INVALID) != 0) {
2047                 /*
2048                  * Some early adapters may not recover properly from
2049                  * an invalid command.  If it appears that the controller
2050                  * has wedged (i.e. status was not cleared by our interrupt
2051                  * reset above), perform a soft reset.
2052                  */
2053                 if (bootverbose)
2054                         device_printf(bt->dev, "Invalid Command 0x%x\n",
2055                                 opcode);
2056                 DELAY(1000);
2057                 status = bt_inb(bt, STATUS_REG);
2058                 if ((status & (CMD_INVALID|STATUS_REG_RSVD|DATAIN_REG_READY|
2059                               CMD_REG_BUSY|DIAG_FAIL|DIAG_ACTIVE)) != 0
2060                  || (status & (HA_READY|INIT_REQUIRED))
2061                   != (HA_READY|INIT_REQUIRED)) {
2062                         btreset(bt, /*hard_reset*/FALSE);
2063                 }
2064                 return (EINVAL);
2065         }
2066
2067         if (param_len > 0) {
2068                 /* The controller did not accept the full argument list */
2069                 return (E2BIG);
2070         }
2071
2072         if (reply_len != reply_buf_size) {
2073                 /* Too much or too little data received */
2074                 return (EMSGSIZE);
2075         }
2076
2077         /* We were successful */
2078         return (0);
2079 }
2080
2081 static int
2082 btinitmboxes(struct bt_softc *bt) {
2083         init_32b_mbox_params_t init_mbox;
2084         int error;
2085
2086         bzero(bt->in_boxes, sizeof(bt_mbox_in_t) * bt->num_boxes);
2087         bzero(bt->out_boxes, sizeof(bt_mbox_out_t) * bt->num_boxes);
2088         bt->cur_inbox = bt->in_boxes;
2089         bt->last_inbox = bt->in_boxes + bt->num_boxes - 1;
2090         bt->cur_outbox = bt->out_boxes;
2091         bt->last_outbox = bt->out_boxes + bt->num_boxes - 1;
2092
2093         /* Tell the adapter about them */
2094         init_mbox.num_boxes = bt->num_boxes;
2095         init_mbox.base_addr[0] = bt->mailbox_physbase & 0xFF;
2096         init_mbox.base_addr[1] = (bt->mailbox_physbase >> 8) & 0xFF;
2097         init_mbox.base_addr[2] = (bt->mailbox_physbase >> 16) & 0xFF;
2098         init_mbox.base_addr[3] = (bt->mailbox_physbase >> 24) & 0xFF;
2099         error = bt_cmd(bt, BOP_INITIALIZE_32BMBOX, (u_int8_t *)&init_mbox,
2100                        /*parmlen*/sizeof(init_mbox), /*reply_buf*/NULL,
2101                        /*reply_len*/0, DEFAULT_CMD_TIMEOUT);
2102
2103         if (error != 0)
2104                 printf("btinitmboxes: Initialization command failed\n");
2105         else if (bt->strict_rr != 0) {
2106                 /*
2107                  * If the controller supports
2108                  * strict round robin mode,
2109                  * enable it
2110                  */
2111                 u_int8_t param;
2112
2113                 param = 0;
2114                 error = bt_cmd(bt, BOP_ENABLE_STRICT_RR, &param, 1,
2115                                /*reply_buf*/NULL, /*reply_len*/0,
2116                                DEFAULT_CMD_TIMEOUT);
2117
2118                 if (error != 0) {
2119                         printf("btinitmboxes: Unable to enable strict RR\n");
2120                         error = 0;
2121                 } else if (bootverbose) {
2122                         device_printf(bt->dev,
2123                             "Using Strict Round Robin Mailbox Mode\n");
2124                 }
2125         }
2126
2127         return (error);
2128 }
2129
2130 /*
2131  * Update the XPT's idea of the negotiated transfer
2132  * parameters for a particular target.
2133  */
2134 static void
2135 btfetchtransinfo(struct bt_softc *bt, struct ccb_trans_settings *cts)
2136 {
2137         setup_data_t    setup_info;
2138         u_int           target;
2139         u_int           targ_offset;
2140         u_int           targ_mask;
2141         u_int           sync_period;
2142         u_int           sync_offset;
2143         u_int           bus_width;
2144         int             error;
2145         u_int8_t        param;
2146         targ_syncinfo_t sync_info;
2147         struct ccb_trans_settings_scsi *scsi =
2148             &cts->proto_specific.scsi;
2149         struct ccb_trans_settings_spi *spi =
2150             &cts->xport_specific.spi;
2151
2152         spi->valid = 0;
2153         scsi->valid = 0;
2154
2155         target = cts->ccb_h.target_id;
2156         targ_offset = (target & 0x7);
2157         targ_mask = (0x01 << targ_offset);
2158
2159         /*
2160          * Inquire Setup Information.  This command retreives the
2161          * Wide negotiation status for recent adapters as well as
2162          * the sync info for older models.
2163          */
2164         param = sizeof(setup_info);
2165         error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, &param, /*paramlen*/1,
2166                        (u_int8_t*)&setup_info, sizeof(setup_info),
2167                        DEFAULT_CMD_TIMEOUT);
2168
2169         if (error != 0) {
2170                 device_printf(bt->dev,
2171                     "btfetchtransinfo - Inquire Setup Info Failed %x\n",
2172                     error);
2173                 return;
2174         }
2175
2176         sync_info = (target < 8) ? setup_info.low_syncinfo[targ_offset]
2177                                  : setup_info.high_syncinfo[targ_offset];
2178
2179         if (sync_info.sync == 0)
2180                 sync_offset = 0;
2181         else
2182                 sync_offset = sync_info.offset;
2183
2184
2185         bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2186         if (strcmp(bt->firmware_ver, "5.06L") >= 0) {
2187                 u_int wide_active;
2188
2189                 wide_active =
2190                     (target < 8) ? (setup_info.low_wide_active & targ_mask)
2191                                  : (setup_info.high_wide_active & targ_mask);
2192
2193                 if (wide_active)
2194                         bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2195         } else if ((bt->wide_permitted & targ_mask) != 0) {
2196                 struct ccb_getdev cgd;
2197
2198                 /*
2199                  * Prior to rev 5.06L, wide status isn't provided,
2200                  * so we "guess" that wide transfers are in effect
2201                  * if the user settings allow for wide and the inquiry
2202                  * data for the device indicates that it can handle
2203                  * wide transfers.
2204                  */
2205                 xpt_setup_ccb(&cgd.ccb_h, cts->ccb_h.path, /*priority*/1);
2206                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2207                 xpt_action((union ccb *)&cgd);
2208                 if ((cgd.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP
2209                  && (cgd.inq_data.flags & SID_WBus16) != 0)
2210                         bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2211         }
2212
2213         if (bt->firmware_ver[0] >= '3') {
2214                 /*
2215                  * For adapters that can do fast or ultra speeds,
2216                  * use the more exact Target Sync Information command.
2217                  */
2218                 target_sync_info_data_t sync_info;
2219
2220                 param = sizeof(sync_info);
2221                 error = bt_cmd(bt, BOP_TARG_SYNC_INFO, &param, /*paramlen*/1,
2222                                (u_int8_t*)&sync_info, sizeof(sync_info),
2223                                DEFAULT_CMD_TIMEOUT);
2224
2225                 if (error != 0) {
2226                         device_printf(bt->dev,
2227                             "btfetchtransinfo - Inquire Sync "
2228                             "Info Failed 0x%x\n", error);
2229                         return;
2230                 }
2231                 sync_period = sync_info.sync_rate[target] * 100;
2232         } else {
2233                 sync_period = 2000 + (500 * sync_info.period);
2234         }
2235
2236         cts->protocol = PROTO_SCSI;
2237         cts->protocol_version = SCSI_REV_2;
2238         cts->transport = XPORT_SPI;
2239         cts->transport_version = 2;
2240
2241         spi->sync_period = sync_period;
2242         spi->valid |= CTS_SPI_VALID_SYNC_RATE;
2243         spi->sync_offset = sync_offset;
2244         spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
2245
2246         spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
2247         spi->bus_width = bus_width;
2248
2249         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
2250                 scsi->valid = CTS_SCSI_VALID_TQ;
2251                 spi->valid |= CTS_SPI_VALID_DISC;
2252         } else
2253                 scsi->valid = 0;
2254
2255         xpt_async(AC_TRANSFER_NEG, cts->ccb_h.path, cts);
2256 }
2257
2258 static void
2259 btmapmboxes(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2260 {
2261         struct bt_softc* bt;
2262
2263         bt = (struct bt_softc*)arg;
2264         bt->mailbox_physbase = segs->ds_addr;
2265 }
2266
2267 static void
2268 btmapccbs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2269 {
2270         struct bt_softc* bt;
2271
2272         bt = (struct bt_softc*)arg;
2273         bt->bt_ccb_physbase = segs->ds_addr;
2274 }
2275
2276 static void
2277 btmapsgs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2278 {
2279
2280         struct bt_softc* bt;
2281
2282         bt = (struct bt_softc*)arg;
2283         SLIST_FIRST(&bt->sg_maps)->sg_physaddr = segs->ds_addr;
2284 }
2285
2286 static void
2287 btpoll(struct cam_sim *sim)
2288 {
2289         bt_intr_locked(cam_sim_softc(sim));
2290 }
2291
2292 void
2293 bttimeout(void *arg)
2294 {
2295         struct bt_ccb   *bccb;
2296         union  ccb      *ccb;
2297         struct bt_softc *bt;
2298
2299         bccb = (struct bt_ccb *)arg;
2300         ccb = bccb->ccb;
2301         bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr;
2302         mtx_assert(&bt->lock, MA_OWNED);
2303         xpt_print_path(ccb->ccb_h.path);
2304         printf("CCB %p - timed out\n", (void *)bccb);
2305
2306         if ((bccb->flags & BCCB_ACTIVE) == 0) {
2307                 xpt_print_path(ccb->ccb_h.path);
2308                 printf("CCB %p - timed out CCB already completed\n",
2309                        (void *)bccb);
2310                 return;
2311         }
2312
2313         /*
2314          * In order to simplify the recovery process, we ask the XPT
2315          * layer to halt the queue of new transactions and we traverse
2316          * the list of pending CCBs and remove their timeouts. This
2317          * means that the driver attempts to clear only one error
2318          * condition at a time.  In general, timeouts that occur
2319          * close together are related anyway, so there is no benefit
2320          * in attempting to handle errors in parallel.  Timeouts will
2321          * be reinstated when the recovery process ends.
2322          */
2323         if ((bccb->flags & BCCB_DEVICE_RESET) == 0) {
2324                 struct ccb_hdr *ccb_h;
2325
2326                 if ((bccb->flags & BCCB_RELEASE_SIMQ) == 0) {
2327                         xpt_freeze_simq(bt->sim, /*count*/1);
2328                         bccb->flags |= BCCB_RELEASE_SIMQ;
2329                 }
2330
2331                 ccb_h = LIST_FIRST(&bt->pending_ccbs);
2332                 while (ccb_h != NULL) {
2333                         struct bt_ccb *pending_bccb;
2334
2335                         pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr;
2336                         callout_stop(&pending_bccb->timer);
2337                         ccb_h = LIST_NEXT(ccb_h, sim_links.le);
2338                 }
2339         }
2340
2341         if ((bccb->flags & BCCB_DEVICE_RESET) != 0
2342          || bt->cur_outbox->action_code != BMBO_FREE
2343          || ((bccb->hccb.tag_enable == TRUE)
2344           && (bt->firmware_ver[0] < '5'))) {
2345                 /*
2346                  * Try a full host adapter/SCSI bus reset.
2347                  * We do this only if we have already attempted
2348                  * to clear the condition with a BDR, or we cannot
2349                  * attempt a BDR for lack of mailbox resources
2350                  * or because of faulty firmware.  It turns out
2351                  * that firmware versions prior to 5.xx treat BDRs
2352                  * as untagged commands that cannot be sent until
2353                  * all outstanding tagged commands have been processed.
2354                  * This makes it somewhat difficult to use a BDR to
2355                  * clear up a problem with an uncompleted tagged command.
2356                  */
2357                 ccb->ccb_h.status = CAM_CMD_TIMEOUT;
2358                 btreset(bt, /*hardreset*/TRUE);
2359                 device_printf(bt->dev, "No longer in timeout\n");
2360         } else {
2361                 /*
2362                  * Send a Bus Device Reset message:
2363                  * The target that is holding up the bus may not
2364                  * be the same as the one that triggered this timeout
2365                  * (different commands have different timeout lengths),
2366                  * but we have no way of determining this from our
2367                  * timeout handler.  Our strategy here is to queue a
2368                  * BDR message to the target of the timed out command.
2369                  * If this fails, we'll get another timeout 2 seconds
2370                  * later which will attempt a bus reset.
2371                  */
2372                 bccb->flags |= BCCB_DEVICE_RESET;
2373                 callout_reset(&bccb->timer, 2 * hz, bttimeout, bccb);
2374
2375                 bt->recovery_bccb->hccb.opcode = INITIATOR_BUS_DEV_RESET;
2376
2377                 /* No Data Transfer */
2378                 bt->recovery_bccb->hccb.datain = TRUE;
2379                 bt->recovery_bccb->hccb.dataout = TRUE;
2380                 bt->recovery_bccb->hccb.btstat = 0;
2381                 bt->recovery_bccb->hccb.sdstat = 0;
2382                 bt->recovery_bccb->hccb.target_id = ccb->ccb_h.target_id;
2383
2384                 /* Tell the adapter about this command */
2385                 bt->cur_outbox->ccb_addr = btccbvtop(bt, bt->recovery_bccb);
2386                 bt->cur_outbox->action_code = BMBO_START;
2387                 bt_outb(bt, COMMAND_REG, BOP_START_MBOX);
2388                 btnextoutbox(bt);
2389         }
2390 }
2391
2392 MODULE_VERSION(bt, 1);
2393 MODULE_DEPEND(bt, cam, 1, 1, 1);