sys/cam/ata/ata_xpt.c

   1 /*-
   2  * Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer,
  10  *    without modification, immediately at the beginning of the file.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  29
  30 #include <sys/param.h>
  31 #include <sys/bus.h>
  32 #include <sys/endian.h>
  33 #include <sys/systm.h>
  34 #include <sys/types.h>
  35 #include <sys/malloc.h>
  36 #include <sys/kernel.h>
  37 #include <sys/time.h>
  38 #include <sys/conf.h>
  39 #include <sys/fcntl.h>
  40 #include <sys/interrupt.h>
  41 #include <sys/sbuf.h>
  42
  43 #include <sys/lock.h>
  44 #include <sys/mutex.h>
  45 #include <sys/sysctl.h>
  46
  47 #include <cam/cam.h>
  48 #include <cam/cam_ccb.h>
  49 #include <cam/cam_queue.h>
  50 #include <cam/cam_periph.h>
  51 #include <cam/cam_sim.h>
  52 #include <cam/cam_xpt.h>
  53 #include <cam/cam_xpt_sim.h>
  54 #include <cam/cam_xpt_periph.h>
  55 #include <cam/cam_xpt_internal.h>
  56 #include <cam/cam_debug.h>
  57
  58 #include <cam/scsi/scsi_all.h>
  59 #include <cam/scsi/scsi_message.h>
  60 #include <cam/ata/ata_all.h>
  61 #include <machine/stdarg.h>     /* for xpt_print below */
  62 #include "opt_cam.h"
  63
  64 struct ata_quirk_entry {
  65         struct scsi_inquiry_pattern inq_pat;
  66         u_int8_t quirks;
  67 #define CAM_QUIRK_MAXTAGS       0x01
  68         u_int mintags;
  69         u_int maxtags;
  70 };
  71
  72 static periph_init_t probe_periph_init;
  73
  74 static struct periph_driver probe_driver =
  75 {
  76         probe_periph_init, "aprobe",
  77         TAILQ_HEAD_INITIALIZER(probe_driver.units), /* generation */ 0,
  78         CAM_PERIPH_DRV_EARLY
  79 };
  80
  81 PERIPHDRIVER_DECLARE(aprobe, probe_driver);
  82
  83 typedef enum {
  84         PROBE_RESET,
  85         PROBE_IDENTIFY,
  86         PROBE_SPINUP,
  87         PROBE_SETMODE,
  88         PROBE_SETPM,
  89         PROBE_SETAPST,
  90         PROBE_SETDMAAA,
  91         PROBE_SETAN,
  92         PROBE_SET_MULTI,
  93         PROBE_INQUIRY,
  94         PROBE_FULL_INQUIRY,
  95         PROBE_PM_PID,
  96         PROBE_PM_PRV,
  97         PROBE_IDENTIFY_SES,
  98         PROBE_IDENTIFY_SAFTE,
  99         PROBE_DONE,
 100         PROBE_INVALID
 101 } probe_action;
 102
 103 static char *probe_action_text[] = {
 104         "PROBE_RESET",
 105         "PROBE_IDENTIFY",
 106         "PROBE_SPINUP",
 107         "PROBE_SETMODE",
 108         "PROBE_SETPM",
 109         "PROBE_SETAPST",
 110         "PROBE_SETDMAAA",
 111         "PROBE_SETAN",
 112         "PROBE_SET_MULTI",
 113         "PROBE_INQUIRY",
 114         "PROBE_FULL_INQUIRY",
 115         "PROBE_PM_PID",
 116         "PROBE_PM_PRV",
 117         "PROBE_IDENTIFY_SES",
 118         "PROBE_IDENTIFY_SAFTE",
 119         "PROBE_DONE",
 120         "PROBE_INVALID"
 121 };
 122
 123 #define PROBE_SET_ACTION(softc, newaction)      \
 124 do {                                                                    \
 125         char **text;                                                    \
 126         text = probe_action_text;                                       \
 127         CAM_DEBUG((softc)->periph->path, CAM_DEBUG_PROBE,               \
 128             ("Probe %s to %s\n", text[(softc)->action],                 \
 129             text[(newaction)]));                                        \
 130         (softc)->action = (newaction);                                  \
 131 } while(0)
 132
 133 typedef enum {
 134         PROBE_NO_ANNOUNCE       = 0x04
 135 } probe_flags;
 136
 137 typedef struct {
 138         TAILQ_HEAD(, ccb_hdr) request_ccbs;
 139         struct ata_params       ident_data;
 140         probe_action    action;
 141         probe_flags     flags;
 142         uint32_t        pm_pid;
 143         uint32_t        pm_prv;
 144         int             restart;
 145         int             spinup;
 146         int             faults;
 147         u_int           caps;
 148         struct cam_periph *periph;
 149 } probe_softc;
 150
 151 static struct ata_quirk_entry ata_quirk_table[] =
 152 {
 153         {
 154                 /* Default tagged queuing parameters for all devices */
 155                 {
 156                   T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 157                   /*vendor*/"*", /*product*/"*", /*revision*/"*"
 158                 },
 159                 /*quirks*/0, /*mintags*/0, /*maxtags*/0
 160         },
 161 };
 162
 163 static const int ata_quirk_table_size =
 164         sizeof(ata_quirk_table) / sizeof(*ata_quirk_table);
 165
 166 static cam_status       proberegister(struct cam_periph *periph,
 167                                       void *arg);
 168 static void      probeschedule(struct cam_periph *probe_periph);
 169 static void      probestart(struct cam_periph *periph, union ccb *start_ccb);
 170 static void      proberequestdefaultnegotiation(struct cam_periph *periph);
 171 static void      probedone(struct cam_periph *periph, union ccb *done_ccb);
 172 static void      probecleanup(struct cam_periph *periph);
 173 static void      ata_find_quirk(struct cam_ed *device);
 174 static void      ata_scan_bus(struct cam_periph *periph, union ccb *ccb);
 175 static void      ata_scan_lun(struct cam_periph *periph,
 176                                struct cam_path *path, cam_flags flags,
 177                                union ccb *ccb);
 178 static void      xptscandone(struct cam_periph *periph, union ccb *done_ccb);
 179 static struct cam_ed *
 180                  ata_alloc_device(struct cam_eb *bus, struct cam_et *target,
 181                                    lun_id_t lun_id);
 182 static void      ata_device_transport(struct cam_path *path);
 183 static void      ata_get_transfer_settings(struct ccb_trans_settings *cts);
 184 static void      ata_set_transfer_settings(struct ccb_trans_settings *cts,
 185                                             struct cam_path *path,
 186                                             int async_update);
 187 static void      ata_dev_async(u_int32_t async_code,
 188                                 struct cam_eb *bus,
 189                                 struct cam_et *target,
 190                                 struct cam_ed *device,
 191                                 void *async_arg);
 192 static void      ata_action(union ccb *start_ccb);
 193 static void      ata_announce_periph(struct cam_periph *periph);
 194
 195 static int ata_dma = 1;
 196 static int atapi_dma = 1;
 197
 198 TUNABLE_INT("hw.ata.ata_dma", &ata_dma);
 199 TUNABLE_INT("hw.ata.atapi_dma", &atapi_dma);
 200
 201 static struct xpt_xport ata_xport = {
 202         .alloc_device = ata_alloc_device,
 203         .action = ata_action,
 204         .async = ata_dev_async,
 205         .announce = ata_announce_periph,
 206 };
 207
 208 struct xpt_xport *
 209 ata_get_xport(void)
 210 {
 211         return (&ata_xport);
 212 }
 213
 214 static void
 215 probe_periph_init()
 216 {
 217 }
 218
 219 static cam_status
 220 proberegister(struct cam_periph *periph, void *arg)
 221 {
 222         union ccb *request_ccb; /* CCB representing the probe request */
 223         cam_status status;
 224         probe_softc *softc;
 225
 226         request_ccb = (union ccb *)arg;
 227         if (request_ccb == NULL) {
 228                 printf("proberegister: no probe CCB, "
 229                        "can't register device\n");
 230                 return(CAM_REQ_CMP_ERR);
 231         }
 232
 233         softc = (probe_softc *)malloc(sizeof(*softc), M_CAMXPT, M_ZERO | M_NOWAIT);
 234
 235         if (softc == NULL) {
 236                 printf("proberegister: Unable to probe new device. "
 237                        "Unable to allocate softc\n");
 238                 return(CAM_REQ_CMP_ERR);
 239         }
 240         TAILQ_INIT(&softc->request_ccbs);
 241         TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h,
 242                           periph_links.tqe);
 243         softc->flags = 0;
 244         periph->softc = softc;
 245         softc->periph = periph;
 246         softc->action = PROBE_INVALID;
 247         status = cam_periph_acquire(periph);
 248         if (status != CAM_REQ_CMP) {
 249                 return (status);
 250         }
 251         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe started\n"));
 252         ata_device_transport(periph->path);
 253         probeschedule(periph);
 254         return(CAM_REQ_CMP);
 255 }
 256
 257 static void
 258 probeschedule(struct cam_periph *periph)
 259 {
 260         union ccb *ccb;
 261         probe_softc *softc;
 262
 263         softc = (probe_softc *)periph->softc;
 264         ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs);
 265
 266         if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) ||
 267             periph->path->device->protocol == PROTO_SATAPM ||
 268             periph->path->device->protocol == PROTO_SEMB)
 269                 PROBE_SET_ACTION(softc, PROBE_RESET);
 270         else
 271                 PROBE_SET_ACTION(softc, PROBE_IDENTIFY);
 272
 273         if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE)
 274                 softc->flags |= PROBE_NO_ANNOUNCE;
 275         else
 276                 softc->flags &= ~PROBE_NO_ANNOUNCE;
 277
 278         xpt_schedule(periph, CAM_PRIORITY_XPT);
 279 }
 280
 281 static void
 282 probestart(struct cam_periph *periph, union ccb *start_ccb)
 283 {
 284         struct ccb_trans_settings cts;
 285         struct ccb_ataio *ataio;
 286         struct ccb_scsiio *csio;
 287         probe_softc *softc;
 288         struct cam_path *path;
 289         struct ata_params *ident_buf;
 290
 291         CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n"));
 292
 293         softc = (probe_softc *)periph->softc;
 294         path = start_ccb->ccb_h.path;
 295         ataio = &start_ccb->ataio;
 296         csio = &start_ccb->csio;
 297         ident_buf = &periph->path->device->ident_data;
 298
 299         if (softc->restart) {
 300                 softc->restart = 0;
 301                 if ((path->device->flags & CAM_DEV_UNCONFIGURED) ||
 302                     path->device->protocol == PROTO_SATAPM ||
 303                     path->device->protocol == PROTO_SEMB)
 304                         softc->action = PROBE_RESET;
 305                 else
 306                         softc->action = PROBE_IDENTIFY;
 307         }
 308         switch (softc->action) {
 309         case PROBE_RESET:
 310                 cam_fill_ataio(ataio,
 311                       0,
 312                       probedone,
 313                       /*flags*/CAM_DIR_NONE,
 314                       0,
 315                       /*data_ptr*/NULL,
 316                       /*dxfer_len*/0,
 317                       15 * 1000);
 318                 ata_reset_cmd(ataio);
 319                 break;
 320         case PROBE_IDENTIFY:
 321                 cam_fill_ataio(ataio,
 322                       1,
 323                       probedone,
 324                       /*flags*/CAM_DIR_IN,
 325                       0,
 326                       /*data_ptr*/(u_int8_t *)&softc->ident_data,
 327                       /*dxfer_len*/sizeof(softc->ident_data),
 328                       30 * 1000);
 329                 if (periph->path->device->protocol == PROTO_ATA)
 330                         ata_28bit_cmd(ataio, ATA_ATA_IDENTIFY, 0, 0, 0);
 331                 else
 332                         ata_28bit_cmd(ataio, ATA_ATAPI_IDENTIFY, 0, 0, 0);
 333                 break;
 334         case PROBE_SPINUP:
 335                 if (bootverbose)
 336                         xpt_print(path, "Spinning up device\n");
 337                 cam_fill_ataio(ataio,
 338                       1,
 339                       probedone,
 340                       /*flags*/CAM_DIR_NONE | CAM_HIGH_POWER,
 341                       0,
 342                       /*data_ptr*/NULL,
 343                       /*dxfer_len*/0,
 344                       30 * 1000);
 345                 ata_28bit_cmd(ataio, ATA_SETFEATURES, ATA_SF_PUIS_SPINUP, 0, 0);
 346                 break;
 347         case PROBE_SETMODE:
 348         {
 349                 int mode, wantmode;
 350
 351                 mode = 0;
 352                 /* Fetch user modes from SIM. */
 353                 bzero(&cts, sizeof(cts));
 354                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 355                 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 356                 cts.type = CTS_TYPE_USER_SETTINGS;
 357                 xpt_action((union ccb *)&cts);
 358                 if (path->device->transport == XPORT_ATA) {
 359                         if (cts.xport_specific.ata.valid & CTS_ATA_VALID_MODE)
 360                                 mode = cts.xport_specific.ata.mode;
 361                 } else {
 362                         if (cts.xport_specific.sata.valid & CTS_SATA_VALID_MODE)
 363                                 mode = cts.xport_specific.sata.mode;
 364                 }
 365                 if (periph->path->device->protocol == PROTO_ATA) {
 366                         if (ata_dma == 0 && (mode == 0 || mode > ATA_PIO_MAX))
 367                                 mode = ATA_PIO_MAX;
 368                 } else {
 369                         if (atapi_dma == 0 && (mode == 0 || mode > ATA_PIO_MAX))
 370                                 mode = ATA_PIO_MAX;
 371                 }
 372 negotiate:
 373                 /* Honor device capabilities. */
 374                 wantmode = mode = ata_max_mode(ident_buf, mode);
 375                 /* Report modes to SIM. */
 376                 bzero(&cts, sizeof(cts));
 377                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 378                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
 379                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
 380                 if (path->device->transport == XPORT_ATA) {
 381                         cts.xport_specific.ata.mode = mode;
 382                         cts.xport_specific.ata.valid = CTS_ATA_VALID_MODE;
 383                 } else {
 384                         cts.xport_specific.sata.mode = mode;
 385                         cts.xport_specific.sata.valid = CTS_SATA_VALID_MODE;
 386                 }
 387                 xpt_action((union ccb *)&cts);
 388                 /* Fetch current modes from SIM. */
 389                 bzero(&cts, sizeof(cts));
 390                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 391                 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 392                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
 393                 xpt_action((union ccb *)&cts);
 394                 if (path->device->transport == XPORT_ATA) {
 395                         if (cts.xport_specific.ata.valid & CTS_ATA_VALID_MODE)
 396                                 mode = cts.xport_specific.ata.mode;
 397                 } else {
 398                         if (cts.xport_specific.ata.valid & CTS_SATA_VALID_MODE)
 399                                 mode = cts.xport_specific.sata.mode;
 400                 }
 401                 /* If SIM disagree - renegotiate. */
 402                 if (mode != wantmode)
 403                         goto negotiate;
 404                 /* Remember what transport thinks about DMA. */
 405                 if (mode < ATA_DMA)
 406                         path->device->inq_flags &= ~SID_DMA;
 407                 else
 408                         path->device->inq_flags |= SID_DMA;
 409                 xpt_async(AC_GETDEV_CHANGED, path, NULL);
 410                 cam_fill_ataio(ataio,
 411                       1,
 412                       probedone,
 413                       /*flags*/CAM_DIR_NONE,
 414                       0,
 415                       /*data_ptr*/NULL,
 416                       /*dxfer_len*/0,
 417                       30 * 1000);
 418                 ata_28bit_cmd(ataio, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode);
 419                 break;
 420         }
 421         case PROBE_SETPM:
 422                 cam_fill_ataio(ataio,
 423                     1,
 424                     probedone,
 425                     CAM_DIR_NONE,
 426                     0,
 427                     NULL,
 428                     0,
 429                     30*1000);
 430                 ata_28bit_cmd(ataio, ATA_SETFEATURES,
 431                     (softc->caps & CTS_SATA_CAPS_H_PMREQ) ? 0x10 : 0x90,
 432                     0, 0x03);
 433                 break;
 434         case PROBE_SETAPST:
 435                 cam_fill_ataio(ataio,
 436                     1,
 437                     probedone,
 438                     CAM_DIR_NONE,
 439                     0,
 440                     NULL,
 441                     0,
 442                     30*1000);
 443                 ata_28bit_cmd(ataio, ATA_SETFEATURES,
 444                     (softc->caps & CTS_SATA_CAPS_H_APST) ? 0x10 : 0x90,
 445                     0, 0x07);
 446                 break;
 447         case PROBE_SETDMAAA:
 448                 cam_fill_ataio(ataio,
 449                     1,
 450                     probedone,
 451                     CAM_DIR_NONE,
 452                     0,
 453                     NULL,
 454                     0,
 455                     30*1000);
 456                 ata_28bit_cmd(ataio, ATA_SETFEATURES,
 457                     (softc->caps & CTS_SATA_CAPS_H_DMAAA) ? 0x10 : 0x90,
 458                     0, 0x02);
 459                 break;
 460         case PROBE_SETAN:
 461                 /* Remember what transport thinks about AEN. */
 462                 if (softc->caps & CTS_SATA_CAPS_H_AN)
 463                         path->device->inq_flags |= SID_AEN;
 464                 else
 465                         path->device->inq_flags &= ~SID_AEN;
 466                 xpt_async(AC_GETDEV_CHANGED, path, NULL);
 467                 cam_fill_ataio(ataio,
 468                     1,
 469                     probedone,
 470                     CAM_DIR_NONE,
 471                     0,
 472                     NULL,
 473                     0,
 474                     30*1000);
 475                 ata_28bit_cmd(ataio, ATA_SETFEATURES,
 476                     (softc->caps & CTS_SATA_CAPS_H_AN) ? 0x10 : 0x90,
 477                     0, 0x05);
 478                 break;
 479         case PROBE_SET_MULTI:
 480         {
 481                 u_int sectors, bytecount;
 482
 483                 bytecount = 8192;       /* SATA maximum */
 484                 /* Fetch user bytecount from SIM. */
 485                 bzero(&cts, sizeof(cts));
 486                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 487                 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 488                 cts.type = CTS_TYPE_USER_SETTINGS;
 489                 xpt_action((union ccb *)&cts);
 490                 if (path->device->transport == XPORT_ATA) {
 491                         if (cts.xport_specific.ata.valid & CTS_ATA_VALID_BYTECOUNT)
 492                                 bytecount = cts.xport_specific.ata.bytecount;
 493                 } else {
 494                         if (cts.xport_specific.sata.valid & CTS_SATA_VALID_BYTECOUNT)
 495                                 bytecount = cts.xport_specific.sata.bytecount;
 496                 }
 497                 /* Honor device capabilities. */
 498                 sectors = max(1, min(ident_buf->sectors_intr & 0xff,
 499                     bytecount / ata_logical_sector_size(ident_buf)));
 500                 /* Report bytecount to SIM. */
 501                 bzero(&cts, sizeof(cts));
 502                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 503                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
 504                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
 505                 if (path->device->transport == XPORT_ATA) {
 506                         cts.xport_specific.ata.bytecount = sectors *
 507                             ata_logical_sector_size(ident_buf);
 508                         cts.xport_specific.ata.valid = CTS_ATA_VALID_BYTECOUNT;
 509                 } else {
 510                         cts.xport_specific.sata.bytecount = sectors *
 511                             ata_logical_sector_size(ident_buf);
 512                         cts.xport_specific.sata.valid = CTS_SATA_VALID_BYTECOUNT;
 513                 }
 514                 xpt_action((union ccb *)&cts);
 515                 /* Fetch current bytecount from SIM. */
 516                 bzero(&cts, sizeof(cts));
 517                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 518                 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 519                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
 520                 xpt_action((union ccb *)&cts);
 521                 if (path->device->transport == XPORT_ATA) {
 522                         if (cts.xport_specific.ata.valid & CTS_ATA_VALID_BYTECOUNT)
 523                                 bytecount = cts.xport_specific.ata.bytecount;
 524                 } else {
 525                         if (cts.xport_specific.sata.valid & CTS_SATA_VALID_BYTECOUNT)
 526                                 bytecount = cts.xport_specific.sata.bytecount;
 527                 }
 528                 sectors = bytecount / ata_logical_sector_size(ident_buf);
 529
 530                 cam_fill_ataio(ataio,
 531                     1,
 532                     probedone,
 533                     CAM_DIR_NONE,
 534                     0,
 535                     NULL,
 536                     0,
 537                     30*1000);
 538                 ata_28bit_cmd(ataio, ATA_SET_MULTI, 0, 0, sectors);
 539                 break;
 540         }
 541         case PROBE_INQUIRY:
 542         {
 543                 u_int bytecount;
 544
 545                 bytecount = 8192;       /* SATA maximum */
 546                 /* Fetch user bytecount from SIM. */
 547                 bzero(&cts, sizeof(cts));
 548                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 549                 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 550                 cts.type = CTS_TYPE_USER_SETTINGS;
 551                 xpt_action((union ccb *)&cts);
 552                 if (path->device->transport == XPORT_ATA) {
 553                         if (cts.xport_specific.ata.valid & CTS_ATA_VALID_BYTECOUNT)
 554                                 bytecount = cts.xport_specific.ata.bytecount;
 555                 } else {
 556                         if (cts.xport_specific.sata.valid & CTS_SATA_VALID_BYTECOUNT)
 557                                 bytecount = cts.xport_specific.sata.bytecount;
 558                 }
 559                 /* Honor device capabilities. */
 560                 bytecount &= ~1;
 561                 bytecount = max(2, min(65534, bytecount));
 562                 if (ident_buf->satacapabilities != 0x0000 &&
 563                     ident_buf->satacapabilities != 0xffff) {
 564                         bytecount = min(8192, bytecount);
 565                 }
 566                 /* Report bytecount to SIM. */
 567                 bzero(&cts, sizeof(cts));
 568                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 569                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
 570                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
 571                 if (path->device->transport == XPORT_ATA) {
 572                         cts.xport_specific.ata.bytecount = bytecount;
 573                         cts.xport_specific.ata.valid = CTS_ATA_VALID_BYTECOUNT;
 574                 } else {
 575                         cts.xport_specific.sata.bytecount = bytecount;
 576                         cts.xport_specific.sata.valid = CTS_SATA_VALID_BYTECOUNT;
 577                 }
 578                 xpt_action((union ccb *)&cts);
 579                 /* FALLTHROUGH */
 580         }
 581         case PROBE_FULL_INQUIRY:
 582         {
 583                 u_int inquiry_len;
 584                 struct scsi_inquiry_data *inq_buf =
 585                     &periph->path->device->inq_data;
 586
 587                 if (softc->action == PROBE_INQUIRY)
 588                         inquiry_len = SHORT_INQUIRY_LENGTH;
 589                 else
 590                         inquiry_len = SID_ADDITIONAL_LENGTH(inq_buf);
 591                 /*
 592                  * Some parallel SCSI devices fail to send an
 593                  * ignore wide residue message when dealing with
 594                  * odd length inquiry requests.  Round up to be
 595                  * safe.
 596                  */
 597                 inquiry_len = roundup2(inquiry_len, 2);
 598                 scsi_inquiry(csio,
 599                              /*retries*/1,
 600                              probedone,
 601                              MSG_SIMPLE_Q_TAG,
 602                              (u_int8_t *)inq_buf,
 603                              inquiry_len,
 604                              /*evpd*/FALSE,
 605                              /*page_code*/0,
 606                              SSD_MIN_SIZE,
 607                              /*timeout*/60 * 1000);
 608                 break;
 609         }
 610         case PROBE_PM_PID:
 611                 cam_fill_ataio(ataio,
 612                       1,
 613                       probedone,
 614                       /*flags*/CAM_DIR_NONE,
 615                       0,
 616                       /*data_ptr*/NULL,
 617                       /*dxfer_len*/0,
 618                       10 * 1000);
 619                 ata_pm_read_cmd(ataio, 0, 15);
 620                 break;
 621         case PROBE_PM_PRV:
 622                 cam_fill_ataio(ataio,
 623                       1,
 624                       probedone,
 625                       /*flags*/CAM_DIR_NONE,
 626                       0,
 627                       /*data_ptr*/NULL,
 628                       /*dxfer_len*/0,
 629                       10 * 1000);
 630                 ata_pm_read_cmd(ataio, 1, 15);
 631                 break;
 632         case PROBE_IDENTIFY_SES:
 633                 cam_fill_ataio(ataio,
 634                       1,
 635                       probedone,
 636                       /*flags*/CAM_DIR_IN,
 637                       0,
 638                       /*data_ptr*/(u_int8_t *)&softc->ident_data,
 639                       /*dxfer_len*/sizeof(softc->ident_data),
 640                       30 * 1000);
 641                 ata_28bit_cmd(ataio, ATA_SEP_ATTN, 0xEC, 0x02,
 642                     sizeof(softc->ident_data) / 4);
 643                 break;
 644         case PROBE_IDENTIFY_SAFTE:
 645                 cam_fill_ataio(ataio,
 646                       1,
 647                       probedone,
 648                       /*flags*/CAM_DIR_IN,
 649                       0,
 650                       /*data_ptr*/(u_int8_t *)&softc->ident_data,
 651                       /*dxfer_len*/sizeof(softc->ident_data),
 652                       30 * 1000);
 653                 ata_28bit_cmd(ataio, ATA_SEP_ATTN, 0xEC, 0x00,
 654                     sizeof(softc->ident_data) / 4);
 655                 break;
 656         default:
 657                 panic("probestart: invalid action state 0x%x\n", softc->action);
 658         }
 659         start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
 660         xpt_action(start_ccb);
 661 }
 662
 663 static void
 664 proberequestdefaultnegotiation(struct cam_periph *periph)
 665 {
 666         struct ccb_trans_settings cts;
 667
 668         xpt_setup_ccb(&cts.ccb_h, periph->path, CAM_PRIORITY_NONE);
 669         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 670         cts.type = CTS_TYPE_USER_SETTINGS;
 671         xpt_action((union ccb *)&cts);
 672         if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
 673                 return;
 674         cts.xport_specific.valid = 0;
 675         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
 676         cts.type = CTS_TYPE_CURRENT_SETTINGS;
 677         xpt_action((union ccb *)&cts);
 678 }
 679
 680 static void
 681 probedone(struct cam_periph *periph, union ccb *done_ccb)
 682 {
 683         struct ccb_trans_settings cts;
 684         struct ata_params *ident_buf;
 685         struct scsi_inquiry_data *inq_buf;
 686         probe_softc *softc;
 687         struct cam_path *path;
 688         cam_status status;
 689         u_int32_t  priority;
 690         u_int caps;
 691         int changed = 1, found = 1;
 692         static const uint8_t fake_device_id_hdr[8] =
 693             {0, SVPD_DEVICE_ID, 0, 12,
 694              SVPD_ID_CODESET_BINARY, SVPD_ID_TYPE_NAA, 0, 8};
 695
 696         CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n"));
 697
 698         softc = (probe_softc *)periph->softc;
 699         path = done_ccb->ccb_h.path;
 700         priority = done_ccb->ccb_h.pinfo.priority;
 701         ident_buf = &path->device->ident_data;
 702         inq_buf = &path->device->inq_data;
 703
 704         if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 705                 if (cam_periph_error(done_ccb,
 706                     0, softc->restart ? (SF_NO_RECOVERY | SF_NO_RETRY) : 0,
 707                     NULL) == ERESTART) {
 708 out:
 709                         /* Drop freeze taken due to CAM_DEV_QFREEZE flag set. */
 710                         cam_release_devq(path, 0, 0, 0, FALSE);
 711                         return;
 712                 }
 713                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
 714                         /* Don't wedge the queue */
 715                         xpt_release_devq(path, /*count*/1, /*run_queue*/TRUE);
 716                 }
 717                 status = done_ccb->ccb_h.status & CAM_STATUS_MASK;
 718                 if (softc->restart) {
 719                         softc->faults++;
 720                         if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) ==
 721                             CAM_CMD_TIMEOUT)
 722                                 softc->faults += 4;
 723                         if (softc->faults < 10)
 724                                 goto done;
 725                         else
 726                                 softc->restart = 0;
 727
 728                 /* Old PIO2 devices may not support mode setting. */
 729                 } else if (softc->action == PROBE_SETMODE &&
 730                     status == CAM_ATA_STATUS_ERROR &&
 731                     ata_max_pmode(ident_buf) <= ATA_PIO2 &&
 732                     (ident_buf->capabilities1 & ATA_SUPPORT_IORDY) == 0) {
 733                         goto noerror;
 734
 735                 /*
 736                  * Some old WD SATA disks report supported and enabled
 737                  * device-initiated interface power management, but return
 738                  * ABORT on attempt to disable it.
 739                  */
 740                 } else if (softc->action == PROBE_SETPM &&
 741                     status == CAM_ATA_STATUS_ERROR) {
 742                         goto noerror;
 743
 744                 /*
 745                  * Some HP SATA disks report supported DMA Auto-Activation,
 746                  * but return ABORT on attempt to enable it.
 747                  */
 748                 } else if (softc->action == PROBE_SETDMAAA &&
 749                     status == CAM_ATA_STATUS_ERROR) {
 750                         goto noerror;
 751
 752                 /*
 753                  * SES and SAF-TE SEPs have different IDENTIFY commands,
 754                  * but SATA specification doesn't tell how to identify them.
 755                  * Until better way found, just try another if first fail.
 756                  */
 757                 } else if (softc->action == PROBE_IDENTIFY_SES &&
 758                     status == CAM_ATA_STATUS_ERROR) {
 759                         PROBE_SET_ACTION(softc, PROBE_IDENTIFY_SAFTE);
 760                         xpt_release_ccb(done_ccb);
 761                         xpt_schedule(periph, priority);
 762                         goto out;
 763                 }
 764
 765                 /*
 766                  * If we get to this point, we got an error status back
 767                  * from the inquiry and the error status doesn't require
 768                  * automatically retrying the command.  Therefore, the
 769                  * inquiry failed.  If we had inquiry information before
 770                  * for this device, but this latest inquiry command failed,
 771                  * the device has probably gone away.  If this device isn't
 772                  * already marked unconfigured, notify the peripheral
 773                  * drivers that this device is no more.
 774                  */
 775 device_fail:    if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
 776                         xpt_async(AC_LOST_DEVICE, path, NULL);
 777                 PROBE_SET_ACTION(softc, PROBE_INVALID);
 778                 found = 0;
 779                 goto done;
 780         }
 781 noerror:
 782         if (softc->restart)
 783                 goto done;
 784         switch (softc->action) {
 785         case PROBE_RESET:
 786         {
 787                 int sign = (done_ccb->ataio.res.lba_high << 8) +
 788                     done_ccb->ataio.res.lba_mid;
 789                 CAM_DEBUG(path, CAM_DEBUG_PROBE,
 790                     ("SIGNATURE: %04x\n", sign));
 791                 if (sign == 0x0000 &&
 792                     done_ccb->ccb_h.target_id != 15) {
 793                         path->device->protocol = PROTO_ATA;
 794                         PROBE_SET_ACTION(softc, PROBE_IDENTIFY);
 795                 } else if (sign == 0x9669 &&
 796                     done_ccb->ccb_h.target_id == 15) {
 797                         /* Report SIM that PM is present. */
 798                         bzero(&cts, sizeof(cts));
 799                         xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 800                         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
 801                         cts.type = CTS_TYPE_CURRENT_SETTINGS;
 802                         cts.xport_specific.sata.pm_present = 1;
 803                         cts.xport_specific.sata.valid = CTS_SATA_VALID_PM;
 804                         xpt_action((union ccb *)&cts);
 805                         path->device->protocol = PROTO_SATAPM;
 806                         PROBE_SET_ACTION(softc, PROBE_PM_PID);
 807                 } else if (sign == 0xc33c &&
 808                     done_ccb->ccb_h.target_id != 15) {
 809                         path->device->protocol = PROTO_SEMB;
 810                         PROBE_SET_ACTION(softc, PROBE_IDENTIFY_SES);
 811                 } else if (sign == 0xeb14 &&
 812                     done_ccb->ccb_h.target_id != 15) {
 813                         path->device->protocol = PROTO_SCSI;
 814                         PROBE_SET_ACTION(softc, PROBE_IDENTIFY);
 815                 } else {
 816                         if (done_ccb->ccb_h.target_id != 15) {
 817                                 xpt_print(path,
 818                                     "Unexpected signature 0x%04x\n", sign);
 819                         }
 820                         goto device_fail;
 821                 }
 822                 xpt_release_ccb(done_ccb);
 823                 xpt_schedule(periph, priority);
 824                 goto out;
 825         }
 826         case PROBE_IDENTIFY:
 827         {
 828                 struct ccb_pathinq cpi;
 829                 int16_t *ptr;
 830
 831                 ident_buf = &softc->ident_data;
 832                 for (ptr = (int16_t *)ident_buf;
 833                      ptr < (int16_t *)ident_buf + sizeof(struct ata_params)/2; ptr++) {
 834                         *ptr = le16toh(*ptr);
 835                 }
 836                 if (strncmp(ident_buf->model, "FX", 2) &&
 837                     strncmp(ident_buf->model, "NEC", 3) &&
 838                     strncmp(ident_buf->model, "Pioneer", 7) &&
 839                     strncmp(ident_buf->model, "SHARP", 5)) {
 840                         ata_bswap(ident_buf->model, sizeof(ident_buf->model));
 841                         ata_bswap(ident_buf->revision, sizeof(ident_buf->revision));
 842                         ata_bswap(ident_buf->serial, sizeof(ident_buf->serial));
 843                 }
 844                 ata_btrim(ident_buf->model, sizeof(ident_buf->model));
 845                 ata_bpack(ident_buf->model, ident_buf->model, sizeof(ident_buf->model));
 846                 ata_btrim(ident_buf->revision, sizeof(ident_buf->revision));
 847                 ata_bpack(ident_buf->revision, ident_buf->revision, sizeof(ident_buf->revision));
 848                 ata_btrim(ident_buf->serial, sizeof(ident_buf->serial));
 849                 ata_bpack(ident_buf->serial, ident_buf->serial, sizeof(ident_buf->serial));
 850                 /* Device may need spin-up before IDENTIFY become valid. */
 851                 if ((ident_buf->specconf == 0x37c8 ||
 852                      ident_buf->specconf == 0x738c) &&
 853                     ((ident_buf->config & ATA_RESP_INCOMPLETE) ||
 854                      softc->spinup == 0)) {
 855                         PROBE_SET_ACTION(softc, PROBE_SPINUP);
 856                         xpt_release_ccb(done_ccb);
 857                         xpt_schedule(periph, priority);
 858                         goto out;
 859                 }
 860                 ident_buf = &path->device->ident_data;
 861                 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
 862                         /* Check that it is the same device. */
 863                         if (bcmp(softc->ident_data.model, ident_buf->model,
 864                              sizeof(ident_buf->model)) ||
 865                             bcmp(softc->ident_data.revision, ident_buf->revision,
 866                              sizeof(ident_buf->revision)) ||
 867                             bcmp(softc->ident_data.serial, ident_buf->serial,
 868                              sizeof(ident_buf->serial))) {
 869                                 /* Device changed. */
 870                                 xpt_async(AC_LOST_DEVICE, path, NULL);
 871                         } else {
 872                                 bcopy(&softc->ident_data, ident_buf, sizeof(struct ata_params));
 873                                 changed = 0;
 874                         }
 875                 }
 876                 if (changed) {
 877                         bcopy(&softc->ident_data, ident_buf, sizeof(struct ata_params));
 878                         /* Clean up from previous instance of this device */
 879                         if (path->device->serial_num != NULL) {
 880                                 free(path->device->serial_num, M_CAMXPT);
 881                                 path->device->serial_num = NULL;
 882                                 path->device->serial_num_len = 0;
 883                         }
 884                         if (path->device->device_id != NULL) {
 885                                 free(path->device->device_id, M_CAMXPT);
 886                                 path->device->device_id = NULL;
 887                                 path->device->device_id_len = 0;
 888                         }
 889                         path->device->serial_num =
 890                                 (u_int8_t *)malloc((sizeof(ident_buf->serial) + 1),
 891                                            M_CAMXPT, M_NOWAIT);
 892                         if (path->device->serial_num != NULL) {
 893                                 bcopy(ident_buf->serial,
 894                                       path->device->serial_num,
 895                                       sizeof(ident_buf->serial));
 896                                 path->device->serial_num[sizeof(ident_buf->serial)]
 897                                     = '\0';
 898                                 path->device->serial_num_len =
 899                                     strlen(path->device->serial_num);
 900                         }
 901                         if (ident_buf->enabled.extension &
 902                             ATA_SUPPORT_64BITWWN) {
 903                                 path->device->device_id =
 904                                     malloc(16, M_CAMXPT, M_NOWAIT);
 905                                 if (path->device->device_id != NULL) {
 906                                         path->device->device_id_len = 16;
 907                                         bcopy(&fake_device_id_hdr,
 908                                             path->device->device_id, 8);
 909                                         bcopy(ident_buf->wwn,
 910                                             path->device->device_id + 8, 8);
 911                                         ata_bswap(path->device->device_id + 8, 8);
 912                                 }
 913                         }
 914
 915                         path->device->flags |= CAM_DEV_IDENTIFY_DATA_VALID;
 916                         xpt_async(AC_GETDEV_CHANGED, path, NULL);
 917                 }
 918                 if (ident_buf->satacapabilities & ATA_SUPPORT_NCQ) {
 919                         path->device->mintags = 2;
 920                         path->device->maxtags =
 921                             ATA_QUEUE_LEN(ident_buf->queue) + 1;
 922                 }
 923                 ata_find_quirk(path->device);
 924                 if (path->device->mintags != 0 &&
 925                     path->bus->sim->max_tagged_dev_openings != 0) {
 926                         /* Check if the SIM does not want queued commands. */
 927                         bzero(&cpi, sizeof(cpi));
 928                         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
 929                         cpi.ccb_h.func_code = XPT_PATH_INQ;
 930                         xpt_action((union ccb *)&cpi);
 931                         if (cpi.ccb_h.status == CAM_REQ_CMP &&
 932                             (cpi.hba_inquiry & PI_TAG_ABLE)) {
 933                                 /* Report SIM which tags are allowed. */
 934                                 bzero(&cts, sizeof(cts));
 935                                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 936                                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
 937                                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
 938                                 cts.xport_specific.sata.tags = path->device->maxtags;
 939                                 cts.xport_specific.sata.valid = CTS_SATA_VALID_TAGS;
 940                                 xpt_action((union ccb *)&cts);
 941                         }
 942                 }
 943                 ata_device_transport(path);
 944                 if (changed)
 945                         proberequestdefaultnegotiation(periph);
 946                 PROBE_SET_ACTION(softc, PROBE_SETMODE);
 947                 xpt_release_ccb(done_ccb);
 948                 xpt_schedule(periph, priority);
 949                 goto out;
 950         }
 951         case PROBE_SPINUP:
 952                 if (bootverbose)
 953                         xpt_print(path, "Spin-up done\n");
 954                 softc->spinup = 1;
 955                 PROBE_SET_ACTION(softc, PROBE_IDENTIFY);
 956                 xpt_release_ccb(done_ccb);
 957                 xpt_schedule(periph, priority);
 958                 goto out;
 959         case PROBE_SETMODE:
 960                 /* Set supported bits. */
 961                 bzero(&cts, sizeof(cts));
 962                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 963                 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 964                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
 965                 xpt_action((union ccb *)&cts);
 966                 if (path->device->transport == XPORT_SATA &&
 967                     cts.xport_specific.sata.valid & CTS_SATA_VALID_CAPS)
 968                         caps = cts.xport_specific.sata.caps & CTS_SATA_CAPS_H;
 969                 else if (path->device->transport == XPORT_ATA &&
 970                     cts.xport_specific.ata.valid & CTS_ATA_VALID_CAPS)
 971                         caps = cts.xport_specific.ata.caps & CTS_ATA_CAPS_H;
 972                 else
 973                         caps = 0;
 974                 if (path->device->transport == XPORT_SATA &&
 975                     ident_buf->satacapabilities != 0xffff) {
 976                         if (ident_buf->satacapabilities & ATA_SUPPORT_IFPWRMNGTRCV)
 977                                 caps |= CTS_SATA_CAPS_D_PMREQ;
 978                         if (ident_buf->satacapabilities & ATA_SUPPORT_HAPST)
 979                                 caps |= CTS_SATA_CAPS_D_APST;
 980                 }
 981                 /* Mask unwanted bits. */
 982                 bzero(&cts, sizeof(cts));
 983                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
 984                 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
 985                 cts.type = CTS_TYPE_USER_SETTINGS;
 986                 xpt_action((union ccb *)&cts);
 987                 if (path->device->transport == XPORT_SATA &&
 988                     cts.xport_specific.sata.valid & CTS_SATA_VALID_CAPS)
 989                         caps &= cts.xport_specific.sata.caps;
 990                 else if (path->device->transport == XPORT_ATA &&
 991                     cts.xport_specific.ata.valid & CTS_ATA_VALID_CAPS)
 992                         caps &= cts.xport_specific.ata.caps;
 993                 else
 994                         caps = 0;
 995                 /*
 996                  * Remember what transport thinks about 48-bit DMA.  If
 997                  * capability information is not provided or transport is
 998                  * SATA, we take support for granted.
 999                  */
1000                 if (!(path->device->inq_flags & SID_DMA) ||
1001                     (path->device->transport == XPORT_ATA &&
1002                     (cts.xport_specific.ata.valid & CTS_ATA_VALID_CAPS) &&
1003                     !(caps & CTS_ATA_CAPS_H_DMA48)))
1004                         path->device->inq_flags &= ~SID_DMA48;
1005                 else
1006                         path->device->inq_flags |= SID_DMA48;
1007                 /* Store result to SIM. */
1008                 bzero(&cts, sizeof(cts));
1009                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
1010                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1011                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1012                 if (path->device->transport == XPORT_SATA) {
1013                         cts.xport_specific.sata.caps = caps;
1014                         cts.xport_specific.sata.valid = CTS_SATA_VALID_CAPS;
1015                 } else {
1016                         cts.xport_specific.ata.caps = caps;
1017                         cts.xport_specific.ata.valid = CTS_ATA_VALID_CAPS;
1018                 }
1019                 xpt_action((union ccb *)&cts);
1020                 softc->caps = caps;
1021                 if (path->device->transport != XPORT_SATA)
1022                         goto notsata;
1023                 if ((ident_buf->satasupport & ATA_SUPPORT_IFPWRMNGT) &&
1024                     (!(softc->caps & CTS_SATA_CAPS_H_PMREQ)) !=
1025                     (!(ident_buf->sataenabled & ATA_SUPPORT_IFPWRMNGT))) {
1026                         PROBE_SET_ACTION(softc, PROBE_SETPM);
1027                         xpt_release_ccb(done_ccb);
1028                         xpt_schedule(periph, priority);
1029                         goto out;
1030                 }
1031                 /* FALLTHROUGH */
1032         case PROBE_SETPM:
1033                 if (ident_buf->satacapabilities != 0xffff &&
1034                     (ident_buf->satacapabilities & ATA_SUPPORT_DAPST) &&
1035                     (!(softc->caps & CTS_SATA_CAPS_H_APST)) !=
1036                     (!(ident_buf->sataenabled & ATA_ENABLED_DAPST))) {
1037                         PROBE_SET_ACTION(softc, PROBE_SETAPST);
1038                         xpt_release_ccb(done_ccb);
1039                         xpt_schedule(periph, priority);
1040                         goto out;
1041                 }
1042                 /* FALLTHROUGH */
1043         case PROBE_SETAPST:
1044                 if ((ident_buf->satasupport & ATA_SUPPORT_AUTOACTIVATE) &&
1045                     (!(softc->caps & CTS_SATA_CAPS_H_DMAAA)) !=
1046                     (!(ident_buf->sataenabled & ATA_SUPPORT_AUTOACTIVATE))) {
1047                         PROBE_SET_ACTION(softc, PROBE_SETDMAAA);
1048                         xpt_release_ccb(done_ccb);
1049                         xpt_schedule(periph, priority);
1050                         goto out;
1051                 }
1052                 /* FALLTHROUGH */
1053         case PROBE_SETDMAAA:
1054                 if (path->device->protocol != PROTO_ATA &&
1055                     (ident_buf->satasupport & ATA_SUPPORT_ASYNCNOTIF) &&
1056                     (!(softc->caps & CTS_SATA_CAPS_H_AN)) !=
1057                     (!(ident_buf->sataenabled & ATA_SUPPORT_ASYNCNOTIF))) {
1058                         PROBE_SET_ACTION(softc, PROBE_SETAN);
1059                         xpt_release_ccb(done_ccb);
1060                         xpt_schedule(periph, priority);
1061                         goto out;
1062                 }
1063                 /* FALLTHROUGH */
1064         case PROBE_SETAN:
1065 notsata:
1066                 if (path->device->protocol == PROTO_ATA) {
1067                         PROBE_SET_ACTION(softc, PROBE_SET_MULTI);
1068                 } else {
1069                         PROBE_SET_ACTION(softc, PROBE_INQUIRY);
1070                 }
1071                 xpt_release_ccb(done_ccb);
1072                 xpt_schedule(periph, priority);
1073                 goto out;
1074         case PROBE_SET_MULTI:
1075                 if (periph->path->device->flags & CAM_DEV_UNCONFIGURED) {
1076                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1077                         xpt_acquire_device(path->device);
1078                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1079                         xpt_action(done_ccb);
1080                         xpt_async(AC_FOUND_DEVICE, path, done_ccb);
1081                 }
1082                 PROBE_SET_ACTION(softc, PROBE_DONE);
1083                 break;
1084         case PROBE_INQUIRY:
1085         case PROBE_FULL_INQUIRY:
1086         {
1087                 u_int8_t periph_qual, len;
1088
1089                 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID;
1090
1091                 periph_qual = SID_QUAL(inq_buf);
1092
1093                 if (periph_qual != SID_QUAL_LU_CONNECTED &&
1094                     periph_qual != SID_QUAL_LU_OFFLINE)
1095                         break;
1096
1097                 /*
1098                  * We conservatively request only
1099                  * SHORT_INQUIRY_LEN bytes of inquiry
1100                  * information during our first try
1101                  * at sending an INQUIRY. If the device
1102                  * has more information to give,
1103                  * perform a second request specifying
1104                  * the amount of information the device
1105                  * is willing to give.
1106                  */
1107                 len = inq_buf->additional_length
1108                     + offsetof(struct scsi_inquiry_data, additional_length) + 1;
1109                 if (softc->action == PROBE_INQUIRY
1110                     && len > SHORT_INQUIRY_LENGTH) {
1111                         PROBE_SET_ACTION(softc, PROBE_FULL_INQUIRY);
1112                         xpt_release_ccb(done_ccb);
1113                         xpt_schedule(periph, priority);
1114                         goto out;
1115                 }
1116
1117                 ata_device_transport(path);
1118                 if (periph->path->device->flags & CAM_DEV_UNCONFIGURED) {
1119                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1120                         xpt_acquire_device(path->device);
1121                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1122                         xpt_action(done_ccb);
1123                         xpt_async(AC_FOUND_DEVICE, path, done_ccb);
1124                 }
1125                 PROBE_SET_ACTION(softc, PROBE_DONE);
1126                 break;
1127         }
1128         case PROBE_PM_PID:
1129                 if ((path->device->flags & CAM_DEV_IDENTIFY_DATA_VALID) == 0)
1130                         bzero(ident_buf, sizeof(*ident_buf));
1131                 softc->pm_pid = (done_ccb->ataio.res.lba_high << 24) +
1132                     (done_ccb->ataio.res.lba_mid << 16) +
1133                     (done_ccb->ataio.res.lba_low << 8) +
1134                     done_ccb->ataio.res.sector_count;
1135                 ((uint32_t *)ident_buf)[0] = softc->pm_pid;
1136                 snprintf(ident_buf->model, sizeof(ident_buf->model),
1137                     "Port Multiplier %08x", softc->pm_pid);
1138                 PROBE_SET_ACTION(softc, PROBE_PM_PRV);
1139                 xpt_release_ccb(done_ccb);
1140                 xpt_schedule(periph, priority);
1141                 goto out;
1142         case PROBE_PM_PRV:
1143                 softc->pm_prv = (done_ccb->ataio.res.lba_high << 24) +
1144                     (done_ccb->ataio.res.lba_mid << 16) +
1145                     (done_ccb->ataio.res.lba_low << 8) +
1146                     done_ccb->ataio.res.sector_count;
1147                 ((uint32_t *)ident_buf)[1] = softc->pm_prv;
1148                 snprintf(ident_buf->revision, sizeof(ident_buf->revision),
1149                     "%04x", softc->pm_prv);
1150                 path->device->flags |= CAM_DEV_IDENTIFY_DATA_VALID;
1151                 ata_device_transport(path);
1152                 if (periph->path->device->flags & CAM_DEV_UNCONFIGURED)
1153                         proberequestdefaultnegotiation(periph);
1154                 /* Set supported bits. */
1155                 bzero(&cts, sizeof(cts));
1156                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
1157                 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1158                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1159                 xpt_action((union ccb *)&cts);
1160                 if (cts.xport_specific.sata.valid & CTS_SATA_VALID_CAPS)
1161                         caps = cts.xport_specific.sata.caps & CTS_SATA_CAPS_H;
1162                 else
1163                         caps = 0;
1164                 /* All PMPs must support PM requests. */
1165                 caps |= CTS_SATA_CAPS_D_PMREQ;
1166                 /* Mask unwanted bits. */
1167                 bzero(&cts, sizeof(cts));
1168                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
1169                 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1170                 cts.type = CTS_TYPE_USER_SETTINGS;
1171                 xpt_action((union ccb *)&cts);
1172                 if (cts.xport_specific.sata.valid & CTS_SATA_VALID_CAPS)
1173                         caps &= cts.xport_specific.sata.caps;
1174                 else
1175                         caps = 0;
1176                 /* Remember what transport thinks about AEN. */
1177                 if ((caps & CTS_SATA_CAPS_H_AN) && path->device->protocol != PROTO_ATA)
1178                         path->device->inq_flags |= SID_AEN;
1179                 else
1180                         path->device->inq_flags &= ~SID_AEN;
1181                 /* Store result to SIM. */
1182                 bzero(&cts, sizeof(cts));
1183                 xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
1184                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1185                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1186                 cts.xport_specific.sata.caps = caps;
1187                 cts.xport_specific.sata.valid = CTS_SATA_VALID_CAPS;
1188                 xpt_action((union ccb *)&cts);
1189                 softc->caps = caps;
1190                 xpt_async(AC_GETDEV_CHANGED, path, NULL);
1191                 if (periph->path->device->flags & CAM_DEV_UNCONFIGURED) {
1192                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1193                         xpt_acquire_device(path->device);
1194                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1195                         xpt_action(done_ccb);
1196                         xpt_async(AC_FOUND_DEVICE, path, done_ccb);
1197                 } else {
1198                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1199                         xpt_action(done_ccb);
1200                         xpt_async(AC_SCSI_AEN, path, done_ccb);
1201                 }
1202                 PROBE_SET_ACTION(softc, PROBE_DONE);
1203                 break;
1204         case PROBE_IDENTIFY_SES:
1205         case PROBE_IDENTIFY_SAFTE:
1206                 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
1207                         /* Check that it is the same device. */
1208                         if (bcmp(&softc->ident_data, ident_buf, 53)) {
1209                                 /* Device changed. */
1210                                 xpt_async(AC_LOST_DEVICE, path, NULL);
1211                         } else {
1212                                 bcopy(&softc->ident_data, ident_buf, sizeof(struct ata_params));
1213                                 changed = 0;
1214                         }
1215                 }
1216                 if (changed) {
1217                         bcopy(&softc->ident_data, ident_buf, sizeof(struct ata_params));
1218                         /* Clean up from previous instance of this device */
1219                         if (path->device->device_id != NULL) {
1220                                 free(path->device->device_id, M_CAMXPT);
1221                                 path->device->device_id = NULL;
1222                                 path->device->device_id_len = 0;
1223                         }
1224                         path->device->device_id =
1225                             malloc(16, M_CAMXPT, M_NOWAIT);
1226                         if (path->device->device_id != NULL) {
1227                                 path->device->device_id_len = 16;
1228                                 bcopy(&fake_device_id_hdr,
1229                                     path->device->device_id, 8);
1230                                 bcopy(((uint8_t*)ident_buf) + 2,
1231                                     path->device->device_id + 8, 8);
1232                         }
1233
1234                         path->device->flags |= CAM_DEV_IDENTIFY_DATA_VALID;
1235                 }
1236                 ata_device_transport(path);
1237                 if (changed)
1238                         proberequestdefaultnegotiation(periph);
1239
1240                 if (periph->path->device->flags & CAM_DEV_UNCONFIGURED) {
1241                         path->device->flags &= ~CAM_DEV_UNCONFIGURED;
1242                         xpt_acquire_device(path->device);
1243                         done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
1244                         xpt_action(done_ccb);
1245                         xpt_async(AC_FOUND_DEVICE, path, done_ccb);
1246                 }
1247                 PROBE_SET_ACTION(softc, PROBE_DONE);
1248                 break;
1249         default:
1250                 panic("probedone: invalid action state 0x%x\n", softc->action);
1251         }
1252 done:
1253         if (softc->restart) {
1254                 softc->restart = 0;
1255                 xpt_release_ccb(done_ccb);
1256                 probeschedule(periph);
1257                 goto out;
1258         }
1259         xpt_release_ccb(done_ccb);
1260         CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe completed\n"));
1261         while ((done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs))) {
1262                 TAILQ_REMOVE(&softc->request_ccbs,
1263                     &done_ccb->ccb_h, periph_links.tqe);
1264                 done_ccb->ccb_h.status = found ? CAM_REQ_CMP : CAM_REQ_CMP_ERR;
1265                 xpt_done(done_ccb);
1266         }
1267         /* Drop freeze taken due to CAM_DEV_QFREEZE flag set. */
1268         cam_release_devq(path, 0, 0, 0, FALSE);
1269         cam_periph_invalidate(periph);
1270         cam_periph_release_locked(periph);
1271 }
1272
1273 static void
1274 probecleanup(struct cam_periph *periph)
1275 {
1276         free(periph->softc, M_CAMXPT);
1277 }
1278
1279 static void
1280 ata_find_quirk(struct cam_ed *device)
1281 {
1282         struct ata_quirk_entry *quirk;
1283         caddr_t match;
1284
1285         match = cam_quirkmatch((caddr_t)&device->ident_data,
1286                                (caddr_t)ata_quirk_table,
1287                                ata_quirk_table_size,
1288                                sizeof(*ata_quirk_table), ata_identify_match);
1289
1290         if (match == NULL)
1291                 panic("xpt_find_quirk: device didn't match wildcard entry!!");
1292
1293         quirk = (struct ata_quirk_entry *)match;
1294         device->quirk = quirk;
1295         if (quirk->quirks & CAM_QUIRK_MAXTAGS) {
1296                 device->mintags = quirk->mintags;
1297                 device->maxtags = quirk->maxtags;
1298         }
1299 }
1300
1301 typedef struct {
1302         union   ccb *request_ccb;
1303         struct  ccb_pathinq *cpi;
1304         int     counter;
1305 } ata_scan_bus_info;
1306
1307 /*
1308  * To start a scan, request_ccb is an XPT_SCAN_BUS ccb.
1309  * As the scan progresses, xpt_scan_bus is used as the
1310  * callback on completion function.
1311  */
1312 static void
1313 ata_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
1314 {
1315         struct  cam_path *path;
1316         ata_scan_bus_info *scan_info;
1317         union   ccb *work_ccb, *reset_ccb;
1318         struct mtx *mtx;
1319         cam_status status;
1320
1321         CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
1322                   ("xpt_scan_bus\n"));
1323         switch (request_ccb->ccb_h.func_code) {
1324         case XPT_SCAN_BUS:
1325         case XPT_SCAN_TGT:
1326                 /* Find out the characteristics of the bus */
1327                 work_ccb = xpt_alloc_ccb_nowait();
1328                 if (work_ccb == NULL) {
1329                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1330                         xpt_done(request_ccb);
1331                         return;
1332                 }
1333                 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path,
1334                               request_ccb->ccb_h.pinfo.priority);
1335                 work_ccb->ccb_h.func_code = XPT_PATH_INQ;
1336                 xpt_action(work_ccb);
1337                 if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
1338                         request_ccb->ccb_h.status = work_ccb->ccb_h.status;
1339                         xpt_free_ccb(work_ccb);
1340                         xpt_done(request_ccb);
1341                         return;
1342                 }
1343
1344                 /* We may need to reset bus first, if we haven't done it yet. */
1345                 if ((work_ccb->cpi.hba_inquiry &
1346                     (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) &&
1347                     !(work_ccb->cpi.hba_misc & PIM_NOBUSRESET) &&
1348                     !timevalisset(&request_ccb->ccb_h.path->bus->last_reset)) {
1349                         reset_ccb = xpt_alloc_ccb_nowait();
1350                         if (reset_ccb == NULL) {
1351                                 request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1352                                 xpt_free_ccb(work_ccb);
1353                                 xpt_done(request_ccb);
1354                                 return;
1355                         }
1356                         xpt_setup_ccb(&reset_ccb->ccb_h, request_ccb->ccb_h.path,
1357                               CAM_PRIORITY_NONE);
1358                         reset_ccb->ccb_h.func_code = XPT_RESET_BUS;
1359                         xpt_action(reset_ccb);
1360                         if (reset_ccb->ccb_h.status != CAM_REQ_CMP) {
1361                                 request_ccb->ccb_h.status = reset_ccb->ccb_h.status;
1362                                 xpt_free_ccb(reset_ccb);
1363                                 xpt_free_ccb(work_ccb);
1364                                 xpt_done(request_ccb);
1365                                 return;
1366                         }
1367                         xpt_free_ccb(reset_ccb);
1368                 }
1369
1370                 /* Save some state for use while we probe for devices */
1371                 scan_info = (ata_scan_bus_info *)
1372                     malloc(sizeof(ata_scan_bus_info), M_CAMXPT, M_NOWAIT);
1373                 if (scan_info == NULL) {
1374                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1375                         xpt_free_ccb(work_ccb);
1376                         xpt_done(request_ccb);
1377                         return;
1378                 }
1379                 scan_info->request_ccb = request_ccb;
1380                 scan_info->cpi = &work_ccb->cpi;
1381                 /* If PM supported, probe it first. */
1382                 if (scan_info->cpi->hba_inquiry & PI_SATAPM)
1383                         scan_info->counter = scan_info->cpi->max_target;
1384                 else
1385                         scan_info->counter = 0;
1386
1387                 work_ccb = xpt_alloc_ccb_nowait();
1388                 if (work_ccb == NULL) {
1389                         free(scan_info, M_CAMXPT);
1390                         request_ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1391                         xpt_done(request_ccb);
1392                         break;
1393                 }
1394                 mtx = xpt_path_mtx(scan_info->request_ccb->ccb_h.path);
1395                 goto scan_next;
1396         case XPT_SCAN_LUN:
1397                 work_ccb = request_ccb;
1398                 /* Reuse the same CCB to query if a device was really found */
1399                 scan_info = (ata_scan_bus_info *)work_ccb->ccb_h.ppriv_ptr0;
1400                 mtx = xpt_path_mtx(scan_info->request_ccb->ccb_h.path);
1401                 mtx_lock(mtx);
1402                 /* If there is PMP... */
1403                 if ((scan_info->cpi->hba_inquiry & PI_SATAPM) &&
1404                     (scan_info->counter == scan_info->cpi->max_target)) {
1405                         if (work_ccb->ccb_h.status == CAM_REQ_CMP) {
1406                                 /* everything else will be probed by it */
1407                                 /* Free the current request path- we're done with it. */
1408                                 xpt_free_path(work_ccb->ccb_h.path);
1409                                 goto done;
1410                         } else {
1411                                 struct ccb_trans_settings cts;
1412
1413                                 /* Report SIM that PM is absent. */
1414                                 bzero(&cts, sizeof(cts));
1415                                 xpt_setup_ccb(&cts.ccb_h,
1416                                     work_ccb->ccb_h.path, CAM_PRIORITY_NONE);
1417                                 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1418                                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1419                                 cts.xport_specific.sata.pm_present = 0;
1420                                 cts.xport_specific.sata.valid = CTS_SATA_VALID_PM;
1421                                 xpt_action((union ccb *)&cts);
1422                         }
1423                 }
1424                 /* Free the current request path- we're done with it. */
1425                 xpt_free_path(work_ccb->ccb_h.path);
1426                 if (scan_info->counter ==
1427                     ((scan_info->cpi->hba_inquiry & PI_SATAPM) ?
1428                     0 : scan_info->cpi->max_target)) {
1429 done:
1430                         mtx_unlock(mtx);
1431                         xpt_free_ccb(work_ccb);
1432                         xpt_free_ccb((union ccb *)scan_info->cpi);
1433                         request_ccb = scan_info->request_ccb;
1434                         free(scan_info, M_CAMXPT);
1435                         request_ccb->ccb_h.status = CAM_REQ_CMP;
1436                         xpt_done(request_ccb);
1437                         break;
1438                 }
1439                 /* Take next device. Wrap from max (PMP) to 0. */
1440                 scan_info->counter = (scan_info->counter + 1 ) %
1441                     (scan_info->cpi->max_target + 1);
1442 scan_next:
1443                 status = xpt_create_path(&path, NULL,
1444                     scan_info->request_ccb->ccb_h.path_id,
1445                     scan_info->counter, 0);
1446                 if (status != CAM_REQ_CMP) {
1447                         if (request_ccb->ccb_h.func_code == XPT_SCAN_LUN)
1448                                 mtx_unlock(mtx);
1449                         printf("xpt_scan_bus: xpt_create_path failed"
1450                             " with status %#x, bus scan halted\n",
1451                             status);
1452                         xpt_free_ccb(work_ccb);
1453                         xpt_free_ccb((union ccb *)scan_info->cpi);
1454                         request_ccb = scan_info->request_ccb;
1455                         free(scan_info, M_CAMXPT);
1456                         request_ccb->ccb_h.status = status;
1457                         xpt_done(request_ccb);
1458                         break;
1459                 }
1460                 xpt_setup_ccb(&work_ccb->ccb_h, path,
1461                     scan_info->request_ccb->ccb_h.pinfo.priority);
1462                 work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
1463                 work_ccb->ccb_h.cbfcnp = ata_scan_bus;
1464                 work_ccb->ccb_h.flags |= CAM_UNLOCKED;
1465                 work_ccb->ccb_h.ppriv_ptr0 = scan_info;
1466                 work_ccb->crcn.flags = scan_info->request_ccb->crcn.flags;
1467                 mtx_unlock(mtx);
1468                 if (request_ccb->ccb_h.func_code == XPT_SCAN_LUN)
1469                         mtx = NULL;
1470                 xpt_action(work_ccb);
1471                 if (mtx != NULL)
1472                         mtx_lock(mtx);
1473                 break;
1474         default:
1475                 break;
1476         }
1477 }
1478
1479 static void
1480 ata_scan_lun(struct cam_periph *periph, struct cam_path *path,
1481              cam_flags flags, union ccb *request_ccb)
1482 {
1483         struct ccb_pathinq cpi;
1484         cam_status status;
1485         struct cam_path *new_path;
1486         struct cam_periph *old_periph;
1487         int lock;
1488
1489         CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_scan_lun\n"));
1490
1491         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
1492         cpi.ccb_h.func_code = XPT_PATH_INQ;
1493         xpt_action((union ccb *)&cpi);
1494
1495         if (cpi.ccb_h.status != CAM_REQ_CMP) {
1496                 if (request_ccb != NULL) {
1497                         request_ccb->ccb_h.status = cpi.ccb_h.status;
1498                         xpt_done(request_ccb);
1499                 }
1500                 return;
1501         }
1502
1503         if (request_ccb == NULL) {
1504                 request_ccb = xpt_alloc_ccb_nowait();
1505                 if (request_ccb == NULL) {
1506                         xpt_print(path, "xpt_scan_lun: can't allocate CCB, "
1507                             "can't continue\n");
1508                         return;
1509                 }
1510                 status = xpt_create_path(&new_path, NULL,
1511                                           path->bus->path_id,
1512                                           path->target->target_id,
1513                                           path->device->lun_id);
1514                 if (status != CAM_REQ_CMP) {
1515                         xpt_print(path, "xpt_scan_lun: can't create path, "
1516                             "can't continue\n");
1517                         xpt_free_ccb(request_ccb);
1518                         return;
1519                 }
1520                 xpt_setup_ccb(&request_ccb->ccb_h, new_path, CAM_PRIORITY_XPT);
1521                 request_ccb->ccb_h.cbfcnp = xptscandone;
1522                 request_ccb->ccb_h.flags |= CAM_UNLOCKED;
1523                 request_ccb->ccb_h.func_code = XPT_SCAN_LUN;
1524                 request_ccb->crcn.flags = flags;
1525         }
1526
1527         lock = (xpt_path_owned(path) == 0);
1528         if (lock)
1529                 xpt_path_lock(path);
1530         if ((old_periph = cam_periph_find(path, "aprobe")) != NULL) {
1531                 if ((old_periph->flags & CAM_PERIPH_INVALID) == 0) {
1532                         probe_softc *softc;
1533
1534                         softc = (probe_softc *)old_periph->softc;
1535                         TAILQ_INSERT_TAIL(&softc->request_ccbs,
1536                                 &request_ccb->ccb_h, periph_links.tqe);
1537                         softc->restart = 1;
1538                 } else {
1539                         request_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1540                         xpt_done(request_ccb);
1541                 }
1542         } else {
1543                 status = cam_periph_alloc(proberegister, NULL, probecleanup,
1544                                           probestart, "aprobe",
1545                                           CAM_PERIPH_BIO,
1546                                           request_ccb->ccb_h.path, NULL, 0,
1547                                           request_ccb);
1548
1549                 if (status != CAM_REQ_CMP) {
1550                         xpt_print(path, "xpt_scan_lun: cam_alloc_periph "
1551                             "returned an error, can't continue probe\n");
1552                         request_ccb->ccb_h.status = status;
1553                         xpt_done(request_ccb);
1554                 }
1555         }
1556         if (lock)
1557                 xpt_path_unlock(path);
1558 }
1559
1560 static void
1561 xptscandone(struct cam_periph *periph, union ccb *done_ccb)
1562 {
1563
1564         xpt_free_path(done_ccb->ccb_h.path);
1565         xpt_free_ccb(done_ccb);
1566 }
1567
1568 static struct cam_ed *
1569 ata_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
1570 {
1571         struct ata_quirk_entry *quirk;
1572         struct cam_ed *device;
1573
1574         device = xpt_alloc_device(bus, target, lun_id);
1575         if (device == NULL)
1576                 return (NULL);
1577
1578         /*
1579          * Take the default quirk entry until we have inquiry
1580          * data and can determine a better quirk to use.
1581          */
1582         quirk = &ata_quirk_table[ata_quirk_table_size - 1];
1583         device->quirk = (void *)quirk;
1584         device->mintags = 0;
1585         device->maxtags = 0;
1586         bzero(&device->inq_data, sizeof(device->inq_data));
1587         device->inq_flags = 0;
1588         device->queue_flags = 0;
1589         device->serial_num = NULL;
1590         device->serial_num_len = 0;
1591         return (device);
1592 }
1593
1594 static void
1595 ata_device_transport(struct cam_path *path)
1596 {
1597         struct ccb_pathinq cpi;
1598         struct ccb_trans_settings cts;
1599         struct scsi_inquiry_data *inq_buf = NULL;
1600         struct ata_params *ident_buf = NULL;
1601
1602         /* Get transport information from the SIM */
1603         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
1604         cpi.ccb_h.func_code = XPT_PATH_INQ;
1605         xpt_action((union ccb *)&cpi);
1606
1607         path->device->transport = cpi.transport;
1608         if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0)
1609                 inq_buf = &path->device->inq_data;
1610         if ((path->device->flags & CAM_DEV_IDENTIFY_DATA_VALID) != 0)
1611                 ident_buf = &path->device->ident_data;
1612         if (path->device->protocol == PROTO_ATA) {
1613                 path->device->protocol_version = ident_buf ?
1614                     ata_version(ident_buf->version_major) : cpi.protocol_version;
1615         } else if (path->device->protocol == PROTO_SCSI) {
1616                 path->device->protocol_version = inq_buf ?
1617                     SID_ANSI_REV(inq_buf) : cpi.protocol_version;
1618         }
1619         path->device->transport_version = ident_buf ?
1620             ata_version(ident_buf->version_major) : cpi.transport_version;
1621
1622         /* Tell the controller what we think */
1623         xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NONE);
1624         cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1625         cts.type = CTS_TYPE_CURRENT_SETTINGS;
1626         cts.transport = path->device->transport;
1627         cts.transport_version = path->device->transport_version;
1628         cts.protocol = path->device->protocol;
1629         cts.protocol_version = path->device->protocol_version;
1630         cts.proto_specific.valid = 0;
1631         if (ident_buf) {
1632                 if (path->device->transport == XPORT_ATA) {
1633                         cts.xport_specific.ata.atapi =
1634                             (ident_buf->config == ATA_PROTO_CFA) ? 0 :
1635                             ((ident_buf->config & ATA_PROTO_MASK) == ATA_PROTO_ATAPI_16) ? 16 :
1636                             ((ident_buf->config & ATA_PROTO_MASK) == ATA_PROTO_ATAPI_12) ? 12 : 0;
1637                         cts.xport_specific.ata.valid = CTS_ATA_VALID_ATAPI;
1638                 } else {
1639                         cts.xport_specific.sata.atapi =
1640                             (ident_buf->config == ATA_PROTO_CFA) ? 0 :
1641                             ((ident_buf->config & ATA_PROTO_MASK) == ATA_PROTO_ATAPI_16) ? 16 :
1642                             ((ident_buf->config & ATA_PROTO_MASK) == ATA_PROTO_ATAPI_12) ? 12 : 0;
1643                         cts.xport_specific.sata.valid = CTS_SATA_VALID_ATAPI;
1644                 }
1645         } else
1646                 cts.xport_specific.valid = 0;
1647         xpt_action((union ccb *)&cts);
1648 }
1649
1650 static void
1651 ata_dev_advinfo(union ccb *start_ccb)
1652 {
1653         struct cam_ed *device;
1654         struct ccb_dev_advinfo *cdai;
1655         off_t amt;
1656
1657         start_ccb->ccb_h.status = CAM_REQ_INVALID;
1658         device = start_ccb->ccb_h.path->device;
1659         cdai = &start_ccb->cdai;
1660         switch(cdai->buftype) {
1661         case CDAI_TYPE_SCSI_DEVID:
1662                 if (cdai->flags & CDAI_FLAG_STORE)
1663                         return;
1664                 cdai->provsiz = device->device_id_len;
1665                 if (device->device_id_len == 0)
1666                         break;
1667                 amt = device->device_id_len;
1668                 if (cdai->provsiz > cdai->bufsiz)
1669                         amt = cdai->bufsiz;
1670                 memcpy(cdai->buf, device->device_id, amt);
1671                 break;
1672         case CDAI_TYPE_SERIAL_NUM:
1673                 if (cdai->flags & CDAI_FLAG_STORE)
1674                         return;
1675                 cdai->provsiz = device->serial_num_len;
1676                 if (device->serial_num_len == 0)
1677                         break;
1678                 amt = device->serial_num_len;
1679                 if (cdai->provsiz > cdai->bufsiz)
1680                         amt = cdai->bufsiz;
1681                 memcpy(cdai->buf, device->serial_num, amt);
1682                 break;
1683         case CDAI_TYPE_PHYS_PATH:
1684                 if (cdai->flags & CDAI_FLAG_STORE) {
1685                         if (device->physpath != NULL)
1686                                 free(device->physpath, M_CAMXPT);
1687                         device->physpath_len = cdai->bufsiz;
1688                         /* Clear existing buffer if zero length */
1689                         if (cdai->bufsiz == 0)
1690                                 break;
1691                         device->physpath = malloc(cdai->bufsiz, M_CAMXPT, M_NOWAIT);
1692                         if (device->physpath == NULL) {
1693                                 start_ccb->ccb_h.status = CAM_REQ_ABORTED;
1694                                 return;
1695                         }
1696                         memcpy(device->physpath, cdai->buf, cdai->bufsiz);
1697                 } else {
1698                         cdai->provsiz = device->physpath_len;
1699                         if (device->physpath_len == 0)
1700                                 break;
1701                         amt = device->physpath_len;
1702                         if (cdai->provsiz > cdai->bufsiz)
1703                                 amt = cdai->bufsiz;
1704                         memcpy(cdai->buf, device->physpath, amt);
1705                 }
1706                 break;
1707         default:
1708                 return;
1709         }
1710         start_ccb->ccb_h.status = CAM_REQ_CMP;
1711
1712         if (cdai->flags & CDAI_FLAG_STORE) {
1713                 xpt_async(AC_ADVINFO_CHANGED, start_ccb->ccb_h.path,
1714                           (void *)(uintptr_t)cdai->buftype);
1715         }
1716 }
1717
1718 static void
1719 ata_action(union ccb *start_ccb)
1720 {
1721
1722         switch (start_ccb->ccb_h.func_code) {
1723         case XPT_SET_TRAN_SETTINGS:
1724         {
1725                 ata_set_transfer_settings(&start_ccb->cts,
1726                                            start_ccb->ccb_h.path,
1727                                            /*async_update*/FALSE);
1728                 break;
1729         }
1730         case XPT_SCAN_BUS:
1731         case XPT_SCAN_TGT:
1732                 ata_scan_bus(start_ccb->ccb_h.path->periph, start_ccb);
1733                 break;
1734         case XPT_SCAN_LUN:
1735                 ata_scan_lun(start_ccb->ccb_h.path->periph,
1736                               start_ccb->ccb_h.path, start_ccb->crcn.flags,
1737                               start_ccb);
1738                 break;
1739         case XPT_GET_TRAN_SETTINGS:
1740         {
1741                 ata_get_transfer_settings(&start_ccb->cts);
1742                 break;
1743         }
1744         case XPT_SCSI_IO:
1745         {
1746                 struct cam_ed *device;
1747                 u_int   maxlen = 0;
1748
1749                 device = start_ccb->ccb_h.path->device;
1750                 if (device->protocol == PROTO_SCSI &&
1751                     (device->flags & CAM_DEV_IDENTIFY_DATA_VALID)) {
1752                         uint16_t p =
1753                             device->ident_data.config & ATA_PROTO_MASK;
1754
1755                         maxlen =
1756                             (device->ident_data.config == ATA_PROTO_CFA) ? 0 :
1757                             (p == ATA_PROTO_ATAPI_16) ? 16 :
1758                             (p == ATA_PROTO_ATAPI_12) ? 12 : 0;
1759                 }
1760                 if (start_ccb->csio.cdb_len > maxlen) {
1761                         start_ccb->ccb_h.status = CAM_REQ_INVALID;
1762                         xpt_done(start_ccb);
1763                         break;
1764                 }
1765                 xpt_action_default(start_ccb);
1766                 break;
1767         }
1768         case XPT_DEV_ADVINFO:
1769         {
1770                 ata_dev_advinfo(start_ccb);
1771                 break;
1772         }
1773         default:
1774                 xpt_action_default(start_ccb);
1775                 break;
1776         }
1777 }
1778
1779 static void
1780 ata_get_transfer_settings(struct ccb_trans_settings *cts)
1781 {
1782         struct  ccb_trans_settings_ata *ata;
1783         struct  ccb_trans_settings_scsi *scsi;
1784         struct  cam_ed *device;
1785
1786         device = cts->ccb_h.path->device;
1787         xpt_action_default((union ccb *)cts);
1788
1789         if (cts->protocol == PROTO_UNKNOWN ||
1790             cts->protocol == PROTO_UNSPECIFIED) {
1791                 cts->protocol = device->protocol;
1792                 cts->protocol_version = device->protocol_version;
1793         }
1794
1795         if (cts->protocol == PROTO_ATA) {
1796                 ata = &cts->proto_specific.ata;
1797                 if ((ata->valid & CTS_ATA_VALID_TQ) == 0) {
1798                         ata->valid |= CTS_ATA_VALID_TQ;
1799                         if (cts->type == CTS_TYPE_USER_SETTINGS ||
1800                             (device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 ||
1801                             (device->inq_flags & SID_CmdQue) != 0)
1802                                 ata->flags |= CTS_ATA_FLAGS_TAG_ENB;
1803                 }
1804         }
1805         if (cts->protocol == PROTO_SCSI) {
1806                 scsi = &cts->proto_specific.scsi;
1807                 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) {
1808                         scsi->valid |= CTS_SCSI_VALID_TQ;
1809                         if (cts->type == CTS_TYPE_USER_SETTINGS ||
1810                             (device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 ||
1811                             (device->inq_flags & SID_CmdQue) != 0)
1812                                 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
1813                 }
1814         }
1815
1816         if (cts->transport == XPORT_UNKNOWN ||
1817             cts->transport == XPORT_UNSPECIFIED) {
1818                 cts->transport = device->transport;
1819                 cts->transport_version = device->transport_version;
1820         }
1821 }
1822
1823 static void
1824 ata_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_path *path,
1825                            int async_update)
1826 {
1827         struct  ccb_pathinq cpi;
1828         struct  ccb_trans_settings_ata *ata;
1829         struct  ccb_trans_settings_scsi *scsi;
1830         struct  ata_params *ident_data;
1831         struct  scsi_inquiry_data *inq_data;
1832         struct  cam_ed *device;
1833
1834         if (path == NULL || (device = path->device) == NULL) {
1835                 cts->ccb_h.status = CAM_PATH_INVALID;
1836                 xpt_done((union ccb *)cts);
1837                 return;
1838         }
1839
1840         if (cts->protocol == PROTO_UNKNOWN
1841          || cts->protocol == PROTO_UNSPECIFIED) {
1842                 cts->protocol = device->protocol;
1843                 cts->protocol_version = device->protocol_version;
1844         }
1845
1846         if (cts->protocol_version == PROTO_VERSION_UNKNOWN
1847          || cts->protocol_version == PROTO_VERSION_UNSPECIFIED)
1848                 cts->protocol_version = device->protocol_version;
1849
1850         if (cts->protocol != device->protocol) {
1851                 xpt_print(path, "Uninitialized Protocol %x:%x?\n",
1852                        cts->protocol, device->protocol);
1853                 cts->protocol = device->protocol;
1854         }
1855
1856         if (cts->protocol_version > device->protocol_version) {
1857                 if (bootverbose) {
1858                         xpt_print(path, "Down reving Protocol "
1859                             "Version from %d to %d?\n", cts->protocol_version,
1860                             device->protocol_version);
1861                 }
1862                 cts->protocol_version = device->protocol_version;
1863         }
1864
1865         if (cts->transport == XPORT_UNKNOWN
1866          || cts->transport == XPORT_UNSPECIFIED) {
1867                 cts->transport = device->transport;
1868                 cts->transport_version = device->transport_version;
1869         }
1870
1871         if (cts->transport_version == XPORT_VERSION_UNKNOWN
1872          || cts->transport_version == XPORT_VERSION_UNSPECIFIED)
1873                 cts->transport_version = device->transport_version;
1874
1875         if (cts->transport != device->transport) {
1876                 xpt_print(path, "Uninitialized Transport %x:%x?\n",
1877                     cts->transport, device->transport);
1878                 cts->transport = device->transport;
1879         }
1880
1881         if (cts->transport_version > device->transport_version) {
1882                 if (bootverbose) {
1883                         xpt_print(path, "Down reving Transport "
1884                             "Version from %d to %d?\n", cts->transport_version,
1885                             device->transport_version);
1886                 }
1887                 cts->transport_version = device->transport_version;
1888         }
1889
1890         ident_data = &device->ident_data;
1891         inq_data = &device->inq_data;
1892         if (cts->protocol == PROTO_ATA)
1893                 ata = &cts->proto_specific.ata;
1894         else
1895                 ata = NULL;
1896         if (cts->protocol == PROTO_SCSI)
1897                 scsi = &cts->proto_specific.scsi;
1898         else
1899                 scsi = NULL;
1900         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NONE);
1901         cpi.ccb_h.func_code = XPT_PATH_INQ;
1902         xpt_action((union ccb *)&cpi);
1903
1904         /* Sanity checking */
1905         if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0
1906          || (ata && (ident_data->satacapabilities & ATA_SUPPORT_NCQ) == 0)
1907          || (scsi && (INQ_DATA_TQ_ENABLED(inq_data)) == 0)
1908          || (device->queue_flags & SCP_QUEUE_DQUE) != 0
1909          || (device->mintags == 0)) {
1910                 /*
1911                  * Can't tag on hardware that doesn't support tags,
1912                  * doesn't have it enabled, or has broken tag support.
1913                  */
1914                 if (ata)
1915                         ata->flags &= ~CTS_ATA_FLAGS_TAG_ENB;
1916                 if (scsi)
1917                         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1918         }
1919
1920         /* Start/stop tags use. */
1921         if (cts->type == CTS_TYPE_CURRENT_SETTINGS &&
1922             ((ata && (ata->valid & CTS_ATA_VALID_TQ) != 0) ||
1923              (scsi && (scsi->valid & CTS_SCSI_VALID_TQ) != 0))) {
1924                 int nowt, newt = 0;
1925
1926                 nowt = ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 ||
1927                         (device->inq_flags & SID_CmdQue) != 0);
1928                 if (ata)
1929                         newt = (ata->flags & CTS_ATA_FLAGS_TAG_ENB) != 0;
1930                 if (scsi)
1931                         newt = (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0;
1932
1933                 if (newt && !nowt) {
1934                         /*
1935                          * Delay change to use tags until after a
1936                          * few commands have gone to this device so
1937                          * the controller has time to perform transfer
1938                          * negotiations without tagged messages getting
1939                          * in the way.
1940                          */
1941                         device->tag_delay_count = CAM_TAG_DELAY_COUNT;
1942                         device->flags |= CAM_DEV_TAG_AFTER_COUNT;
1943                 } else if (nowt && !newt)
1944                         xpt_stop_tags(path);
1945         }
1946
1947         if (async_update == FALSE)
1948                 xpt_action_default((union ccb *)cts);
1949 }
1950
1951 /*
1952  * Handle any per-device event notifications that require action by the XPT.
1953  */
1954 static void
1955 ata_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
1956               struct cam_ed *device, void *async_arg)
1957 {
1958         cam_status status;
1959         struct cam_path newpath;
1960
1961         /*
1962          * We only need to handle events for real devices.
1963          */
1964         if (target->target_id == CAM_TARGET_WILDCARD
1965          || device->lun_id == CAM_LUN_WILDCARD)
1966                 return;
1967
1968         /*
1969          * We need our own path with wildcards expanded to
1970          * handle certain types of events.
1971          */
1972         if ((async_code == AC_SENT_BDR)
1973          || (async_code == AC_BUS_RESET)
1974          || (async_code == AC_INQ_CHANGED))
1975                 status = xpt_compile_path(&newpath, NULL,
1976                                           bus->path_id,
1977                                           target->target_id,
1978                                           device->lun_id);
1979         else
1980                 status = CAM_REQ_CMP_ERR;
1981
1982         if (status == CAM_REQ_CMP) {
1983                 if (async_code == AC_INQ_CHANGED) {
1984                         /*
1985                          * We've sent a start unit command, or
1986                          * something similar to a device that
1987                          * may have caused its inquiry data to
1988                          * change. So we re-scan the device to
1989                          * refresh the inquiry data for it.
1990                          */
1991                         ata_scan_lun(newpath.periph, &newpath,
1992                                      CAM_EXPECT_INQ_CHANGE, NULL);
1993                 } else {
1994                         /* We need to reinitialize device after reset. */
1995                         ata_scan_lun(newpath.periph, &newpath,
1996                                      0, NULL);
1997                 }
1998                 xpt_release_path(&newpath);
1999         } else if (async_code == AC_LOST_DEVICE &&
2000             (device->flags & CAM_DEV_UNCONFIGURED) == 0) {
2001                 device->flags |= CAM_DEV_UNCONFIGURED;
2002                 xpt_release_device(device);
2003         } else if (async_code == AC_TRANSFER_NEG) {
2004                 struct ccb_trans_settings *settings;
2005                 struct cam_path path;
2006
2007                 settings = (struct ccb_trans_settings *)async_arg;
2008                 xpt_compile_path(&path, NULL, bus->path_id, target->target_id,
2009                                  device->lun_id);
2010                 ata_set_transfer_settings(settings, &path,
2011                                           /*async_update*/TRUE);
2012                 xpt_release_path(&path);
2013         }
2014 }
2015
2016 static void
2017 ata_announce_periph(struct cam_periph *periph)
2018 {
2019         struct  ccb_pathinq cpi;
2020         struct  ccb_trans_settings cts;
2021         struct  cam_path *path = periph->path;
2022         u_int   speed;
2023         u_int   mb;
2024
2025         cam_periph_assert(periph, MA_OWNED);
2026
2027         xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NORMAL);
2028         cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
2029         cts.type = CTS_TYPE_CURRENT_SETTINGS;
2030         xpt_action((union ccb*)&cts);
2031         if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
2032                 return;
2033         /* Ask the SIM for its base transfer speed */
2034         xpt_setup_ccb(&cpi.ccb_h, path, CAM_PRIORITY_NORMAL);
2035         cpi.ccb_h.func_code = XPT_PATH_INQ;
2036         xpt_action((union ccb *)&cpi);
2037         /* Report connection speed */
2038         speed = cpi.base_transfer_speed;
2039         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_ATA) {
2040                 struct  ccb_trans_settings_pata *pata =
2041                     &cts.xport_specific.ata;
2042
2043                 if (pata->valid & CTS_ATA_VALID_MODE)
2044                         speed = ata_mode2speed(pata->mode);
2045         }
2046         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SATA) {
2047                 struct  ccb_trans_settings_sata *sata =
2048                     &cts.xport_specific.sata;
2049
2050                 if (sata->valid & CTS_SATA_VALID_REVISION)
2051                         speed = ata_revision2speed(sata->revision);
2052         }
2053         mb = speed / 1000;
2054         if (mb > 0)
2055                 printf("%s%d: %d.%03dMB/s transfers",
2056                        periph->periph_name, periph->unit_number,
2057                        mb, speed % 1000);
2058         else
2059                 printf("%s%d: %dKB/s transfers", periph->periph_name,
2060                        periph->unit_number, speed);
2061         /* Report additional information about connection */
2062         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_ATA) {
2063                 struct ccb_trans_settings_pata *pata =
2064                     &cts.xport_specific.ata;
2065
2066                 printf(" (");
2067                 if (pata->valid & CTS_ATA_VALID_MODE)
2068                         printf("%s, ", ata_mode2string(pata->mode));
2069                 if ((pata->valid & CTS_ATA_VALID_ATAPI) && pata->atapi != 0)
2070                         printf("ATAPI %dbytes, ", pata->atapi);
2071                 if (pata->valid & CTS_ATA_VALID_BYTECOUNT)
2072                         printf("PIO %dbytes", pata->bytecount);
2073                 printf(")");
2074         }
2075         if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SATA) {
2076                 struct ccb_trans_settings_sata *sata =
2077                     &cts.xport_specific.sata;
2078
2079                 printf(" (");
2080                 if (sata->valid & CTS_SATA_VALID_REVISION)
2081                         printf("SATA %d.x, ", sata->revision);
2082                 else
2083                         printf("SATA, ");
2084                 if (sata->valid & CTS_SATA_VALID_MODE)
2085                         printf("%s, ", ata_mode2string(sata->mode));
2086                 if ((sata->valid & CTS_ATA_VALID_ATAPI) && sata->atapi != 0)
2087                         printf("ATAPI %dbytes, ", sata->atapi);
2088                 if (sata->valid & CTS_SATA_VALID_BYTECOUNT)
2089                         printf("PIO %dbytes", sata->bytecount);
2090                 printf(")");
2091         }
2092         printf("\n");
2093 }