sys/dev/firewire/sbp.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-4-Clause
   3  *
   4  * Copyright (c) 2003 Hidetoshi Shimokawa
   5  * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the acknowledgement as bellow:
  18  *
  19  *    This product includes software developed by K. Kobayashi and H. Shimokawa
  20  *
  21  * 4. The name of the author may not be used to endorse or promote products
  22  *    derived from this software without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  25  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  26  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  27  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  28  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  29  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  32  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  33  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  34  * POSSIBILITY OF SUCH DAMAGE.
  35  *
  36  * $FreeBSD$
  37  *
  38  */
  39
  40 #include <sys/param.h>
  41 #include <sys/systm.h>
  42 #include <sys/module.h>
  43 #include <sys/bus.h>
  44 #include <sys/kernel.h>
  45 #include <sys/sysctl.h>
  46 #include <machine/bus.h>
  47 #include <sys/malloc.h>
  48 #include <sys/lock.h>
  49 #include <sys/mutex.h>
  50
  51 #include <cam/cam.h>
  52 #include <cam/cam_ccb.h>
  53 #include <cam/cam_sim.h>
  54 #include <cam/cam_xpt_sim.h>
  55 #include <cam/cam_debug.h>
  56 #include <cam/cam_periph.h>
  57 #include <cam/scsi/scsi_all.h>
  58
  59 #include <dev/firewire/firewire.h>
  60 #include <dev/firewire/firewirereg.h>
  61 #include <dev/firewire/fwdma.h>
  62 #include <dev/firewire/iec13213.h>
  63 #include <dev/firewire/sbp.h>
  64
  65 #define ccb_sdev_ptr    spriv_ptr0
  66 #define ccb_sbp_ptr     spriv_ptr1
  67
  68 #define SBP_NUM_TARGETS 8 /* MAX 64 */
  69 /*
  70  * Scan_bus doesn't work for more than 8 LUNs
  71  * because of CAM_SCSI2_MAXLUN in cam_xpt.c
  72  */
  73 #define SBP_NUM_LUNS 64
  74 #define SBP_MAXPHYS  MIN(MAXPHYS, (512*1024) /* 512KB */)
  75 #define SBP_DMA_SIZE PAGE_SIZE
  76 #define SBP_LOGIN_SIZE sizeof(struct sbp_login_res)
  77 #define SBP_QUEUE_LEN ((SBP_DMA_SIZE - SBP_LOGIN_SIZE) / sizeof(struct sbp_ocb))
  78 #define SBP_NUM_OCB (SBP_QUEUE_LEN * SBP_NUM_TARGETS)
  79
  80 /*
  81  * STATUS FIFO addressing
  82  *   bit
  83  *-----------------------
  84  *  0- 1( 2): 0 (alignment)
  85  *  2- 7( 6): target
  86  *  8-15( 8): lun
  87  * 16-31( 8): reserved
  88  * 32-47(16): SBP_BIND_HI
  89  * 48-64(16): bus_id, node_id
  90  */
  91 #define SBP_BIND_HI 0x1
  92 #define SBP_DEV2ADDR(t, l) \
  93         (((u_int64_t)SBP_BIND_HI << 32) \
  94         | (((l) & 0xff) << 8) \
  95         | (((t) & 0x3f) << 2))
  96 #define SBP_ADDR2TRG(a) (((a) >> 2) & 0x3f)
  97 #define SBP_ADDR2LUN(a) (((a) >> 8) & 0xff)
  98 #define SBP_INITIATOR 7
  99
 100 static char *orb_fun_name[] = {
 101         ORB_FUN_NAMES
 102 };
 103
 104 static int debug = 0;
 105 static int auto_login = 1;
 106 static int max_speed = -1;
 107 static int sbp_cold = 1;
 108 static int ex_login = 1;
 109 static int login_delay = 1000;  /* msec */
 110 static int scan_delay = 500;    /* msec */
 111 static int use_doorbell = 0;
 112 static int sbp_tags = 0;
 113
 114 SYSCTL_DECL(_hw_firewire);
 115 static SYSCTL_NODE(_hw_firewire, OID_AUTO, sbp, CTLFLAG_RD, 0,
 116         "SBP-II Subsystem");
 117 SYSCTL_INT(_debug, OID_AUTO, sbp_debug, CTLFLAG_RWTUN, &debug, 0,
 118         "SBP debug flag");
 119 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, auto_login, CTLFLAG_RWTUN, &auto_login, 0,
 120         "SBP perform login automatically");
 121 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, max_speed, CTLFLAG_RWTUN, &max_speed, 0,
 122         "SBP transfer max speed");
 123 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, exclusive_login, CTLFLAG_RWTUN,
 124         &ex_login, 0, "SBP enable exclusive login");
 125 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, login_delay, CTLFLAG_RWTUN,
 126         &login_delay, 0, "SBP login delay in msec");
 127 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, scan_delay, CTLFLAG_RWTUN,
 128         &scan_delay, 0, "SBP scan delay in msec");
 129 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, use_doorbell, CTLFLAG_RWTUN,
 130         &use_doorbell, 0, "SBP use doorbell request");
 131 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, tags, CTLFLAG_RWTUN, &sbp_tags, 0,
 132         "SBP tagged queuing support");
 133
 134 #define NEED_RESPONSE 0
 135
 136 #define SBP_SEG_MAX rounddown(0xffff, PAGE_SIZE)
 137 #ifdef __sparc64__ /* iommu */
 138 #define SBP_IND_MAX howmany(SBP_MAXPHYS, SBP_SEG_MAX)
 139 #else
 140 #define SBP_IND_MAX howmany(SBP_MAXPHYS, PAGE_SIZE)
 141 #endif
 142 struct sbp_ocb {
 143         STAILQ_ENTRY(sbp_ocb)   ocb;
 144         union ccb       *ccb;
 145         bus_addr_t      bus_addr;
 146         uint32_t        orb[8];
 147 #define IND_PTR_OFFSET  (8*sizeof(uint32_t))
 148         struct ind_ptr  ind_ptr[SBP_IND_MAX];
 149         struct sbp_dev  *sdev;
 150         int             flags; /* XXX should be removed */
 151         bus_dmamap_t    dmamap;
 152         struct callout  timer;
 153 };
 154
 155 #define OCB_ACT_MGM 0
 156 #define OCB_ACT_CMD 1
 157 #define OCB_MATCH(o,s)  ((o)->bus_addr == ntohl((s)->orb_lo))
 158
 159 struct sbp_dev {
 160 #define SBP_DEV_RESET           0       /* accept login */
 161 #define SBP_DEV_LOGIN           1       /* to login */
 162 #if 0
 163 #define SBP_DEV_RECONN          2       /* to reconnect */
 164 #endif
 165 #define SBP_DEV_TOATTACH        3       /* to attach */
 166 #define SBP_DEV_PROBE           4       /* scan lun */
 167 #define SBP_DEV_ATTACHED        5       /* in operation */
 168 #define SBP_DEV_DEAD            6       /* unavailable unit */
 169 #define SBP_DEV_RETRY           7       /* unavailable unit */
 170         uint8_t status:4,
 171                  timeout:4;
 172         uint8_t type;
 173         uint16_t lun_id;
 174         uint16_t freeze;
 175 #define ORB_LINK_DEAD           (1 << 0)
 176 #define VALID_LUN               (1 << 1)
 177 #define ORB_POINTER_ACTIVE      (1 << 2)
 178 #define ORB_POINTER_NEED        (1 << 3)
 179 #define ORB_DOORBELL_ACTIVE     (1 << 4)
 180 #define ORB_DOORBELL_NEED       (1 << 5)
 181 #define ORB_SHORTAGE            (1 << 6)
 182         uint16_t flags;
 183         struct cam_path *path;
 184         struct sbp_target *target;
 185         struct fwdma_alloc dma;
 186         struct sbp_login_res *login;
 187         struct callout login_callout;
 188         struct sbp_ocb *ocb;
 189         STAILQ_HEAD(, sbp_ocb) ocbs;
 190         STAILQ_HEAD(, sbp_ocb) free_ocbs;
 191         struct sbp_ocb *last_ocb;
 192         char vendor[32];
 193         char product[32];
 194         char revision[10];
 195         char bustgtlun[32];
 196 };
 197
 198 struct sbp_target {
 199         int target_id;
 200         int num_lun;
 201         struct sbp_dev  **luns;
 202         struct sbp_softc *sbp;
 203         struct fw_device *fwdev;
 204         uint32_t mgm_hi, mgm_lo;
 205         struct sbp_ocb *mgm_ocb_cur;
 206         STAILQ_HEAD(, sbp_ocb) mgm_ocb_queue;
 207         struct callout mgm_ocb_timeout;
 208         struct callout scan_callout;
 209         STAILQ_HEAD(, fw_xfer) xferlist;
 210         int n_xfer;
 211 };
 212
 213 struct sbp_softc {
 214         struct firewire_dev_comm fd;
 215         struct cam_sim  *sim;
 216         struct cam_path  *path;
 217         struct sbp_target targets[SBP_NUM_TARGETS];
 218         struct fw_bind fwb;
 219         bus_dma_tag_t   dmat;
 220         struct timeval last_busreset;
 221 #define SIMQ_FREEZED 1
 222         int flags;
 223         struct mtx mtx;
 224 };
 225 #define SBP_LOCK(sbp)           mtx_lock(&(sbp)->mtx)
 226 #define SBP_UNLOCK(sbp)         mtx_unlock(&(sbp)->mtx)
 227 #define SBP_LOCK_ASSERT(sbp)    mtx_assert(&(sbp)->mtx, MA_OWNED)
 228
 229 static void sbp_post_explore (void *);
 230 static void sbp_recv (struct fw_xfer *);
 231 static void sbp_mgm_callback (struct fw_xfer *);
 232 #if 0
 233 static void sbp_cmd_callback (struct fw_xfer *);
 234 #endif
 235 static void sbp_orb_pointer (struct sbp_dev *, struct sbp_ocb *);
 236 static void sbp_doorbell(struct sbp_dev *);
 237 static void sbp_execute_ocb (void *, bus_dma_segment_t *, int, int);
 238 static void sbp_free_ocb (struct sbp_dev *, struct sbp_ocb *);
 239 static void sbp_abort_ocb (struct sbp_ocb *, int);
 240 static void sbp_abort_all_ocbs (struct sbp_dev *, int);
 241 static struct fw_xfer * sbp_write_cmd (struct sbp_dev *, int, int);
 242 static struct sbp_ocb * sbp_get_ocb (struct sbp_dev *);
 243 static struct sbp_ocb * sbp_enqueue_ocb (struct sbp_dev *, struct sbp_ocb *);
 244 static struct sbp_ocb * sbp_dequeue_ocb (struct sbp_dev *, struct sbp_status *);
 245 static void sbp_cam_detach_sdev(struct sbp_dev *);
 246 static void sbp_free_sdev(struct sbp_dev *);
 247 static void sbp_cam_detach_target (struct sbp_target *);
 248 static void sbp_free_target (struct sbp_target *);
 249 static void sbp_mgm_timeout (void *arg);
 250 static void sbp_timeout (void *arg);
 251 static void sbp_mgm_orb (struct sbp_dev *, int, struct sbp_ocb *);
 252
 253 static MALLOC_DEFINE(M_SBP, "sbp", "SBP-II/FireWire");
 254
 255 /* cam related functions */
 256 static void     sbp_action(struct cam_sim *sim, union ccb *ccb);
 257 static void     sbp_poll(struct cam_sim *sim);
 258 static void     sbp_cam_scan_lun(struct cam_periph *, union ccb *);
 259 static void     sbp_cam_scan_target(void *arg);
 260
 261 static char *orb_status0[] = {
 262         /* 0 */ "No additional information to report",
 263         /* 1 */ "Request type not supported",
 264         /* 2 */ "Speed not supported",
 265         /* 3 */ "Page size not supported",
 266         /* 4 */ "Access denied",
 267         /* 5 */ "Logical unit not supported",
 268         /* 6 */ "Maximum payload too small",
 269         /* 7 */ "Reserved for future standardization",
 270         /* 8 */ "Resources unavailable",
 271         /* 9 */ "Function rejected",
 272         /* A */ "Login ID not recognized",
 273         /* B */ "Dummy ORB completed",
 274         /* C */ "Request aborted",
 275         /* FF */ "Unspecified error"
 276 #define MAX_ORB_STATUS0 0xd
 277 };
 278
 279 static char *orb_status1_object[] = {
 280         /* 0 */ "Operation request block (ORB)",
 281         /* 1 */ "Data buffer",
 282         /* 2 */ "Page table",
 283         /* 3 */ "Unable to specify"
 284 };
 285
 286 static char *orb_status1_serial_bus_error[] = {
 287         /* 0 */ "Missing acknowledge",
 288         /* 1 */ "Reserved; not to be used",
 289         /* 2 */ "Time-out error",
 290         /* 3 */ "Reserved; not to be used",
 291         /* 4 */ "Busy retry limit exceeded(X)",
 292         /* 5 */ "Busy retry limit exceeded(A)",
 293         /* 6 */ "Busy retry limit exceeded(B)",
 294         /* 7 */ "Reserved for future standardization",
 295         /* 8 */ "Reserved for future standardization",
 296         /* 9 */ "Reserved for future standardization",
 297         /* A */ "Reserved for future standardization",
 298         /* B */ "Tardy retry limit exceeded",
 299         /* C */ "Conflict error",
 300         /* D */ "Data error",
 301         /* E */ "Type error",
 302         /* F */ "Address error"
 303 };
 304
 305 static void
 306 sbp_identify(driver_t *driver, device_t parent)
 307 {
 308 SBP_DEBUG(0)
 309         printf("sbp_identify\n");
 310 END_DEBUG
 311
 312         if (device_find_child(parent, "sbp", -1) == NULL)
 313                 BUS_ADD_CHILD(parent, 0, "sbp", -1);
 314 }
 315
 316 /*
 317  * sbp_probe()
 318  */
 319 static int
 320 sbp_probe(device_t dev)
 321 {
 322
 323 SBP_DEBUG(0)
 324         printf("sbp_probe\n");
 325 END_DEBUG
 326
 327         device_set_desc(dev, "SBP-2/SCSI over FireWire");
 328
 329 #if 0
 330         if (bootverbose)
 331                 debug = bootverbose;
 332 #endif
 333
 334         return (0);
 335 }
 336
 337 /*
 338  * Display device characteristics on the console
 339  */
 340 static void
 341 sbp_show_sdev_info(struct sbp_dev *sdev)
 342 {
 343         struct fw_device *fwdev;
 344
 345         fwdev = sdev->target->fwdev;
 346         device_printf(sdev->target->sbp->fd.dev,
 347                 "%s: %s: ordered:%d type:%d EUI:%08x%08x node:%d "
 348                 "speed:%d maxrec:%d\n",
 349                 __func__,
 350                 sdev->bustgtlun,
 351                 (sdev->type & 0x40) >> 6,
 352                 (sdev->type & 0x1f),
 353                 fwdev->eui.hi,
 354                 fwdev->eui.lo,
 355                 fwdev->dst,
 356                 fwdev->speed,
 357                 fwdev->maxrec);
 358
 359         device_printf(sdev->target->sbp->fd.dev,
 360                         "%s: %s '%s' '%s' '%s'\n",
 361                         __func__,
 362                         sdev->bustgtlun,
 363                         sdev->vendor,
 364                         sdev->product,
 365                         sdev->revision);
 366 }
 367
 368 static struct {
 369         int bus;
 370         int target;
 371         struct fw_eui64 eui;
 372 } wired[] = {
 373         /* Bus  Target  EUI64 */
 374 #if 0
 375         {0,     2,      {0x00018ea0, 0x01fd0154}},      /* Logitec HDD */
 376         {0,     0,      {0x00018ea6, 0x00100682}},      /* Logitec DVD */
 377         {0,     1,      {0x00d03200, 0xa412006a}},      /* Yano HDD */
 378 #endif
 379         {-1,    -1,     {0,0}}
 380 };
 381
 382 static int
 383 sbp_new_target(struct sbp_softc *sbp, struct fw_device *fwdev)
 384 {
 385         int bus, i, target=-1;
 386         char w[SBP_NUM_TARGETS];
 387
 388         bzero(w, sizeof(w));
 389         bus = device_get_unit(sbp->fd.dev);
 390
 391         /* XXX wired-down configuration should be gotten from
 392                                         tunable or device hint */
 393         for (i = 0; wired[i].bus >= 0; i++) {
 394                 if (wired[i].bus == bus) {
 395                         w[wired[i].target] = 1;
 396                         if (wired[i].eui.hi == fwdev->eui.hi &&
 397                                         wired[i].eui.lo == fwdev->eui.lo)
 398                                 target = wired[i].target;
 399                 }
 400         }
 401         if (target >= 0) {
 402                 if (target < SBP_NUM_TARGETS &&
 403                                 sbp->targets[target].fwdev == NULL)
 404                         return (target);
 405                 device_printf(sbp->fd.dev,
 406                         "target %d is not free for %08x:%08x\n",
 407                         target, fwdev->eui.hi, fwdev->eui.lo);
 408                 target = -1;
 409         }
 410         /* non-wired target */
 411         for (i = 0; i < SBP_NUM_TARGETS; i++)
 412                 if (sbp->targets[i].fwdev == NULL && w[i] == 0) {
 413                         target = i;
 414                         break;
 415                 }
 416
 417         return target;
 418 }
 419
 420 static void
 421 sbp_alloc_lun(struct sbp_target *target)
 422 {
 423         struct crom_context cc;
 424         struct csrreg *reg;
 425         struct sbp_dev *sdev, **newluns;
 426         struct sbp_softc *sbp;
 427         int maxlun, lun, i;
 428
 429         sbp = target->sbp;
 430         crom_init_context(&cc, target->fwdev->csrrom);
 431         /* XXX shoud parse appropriate unit directories only */
 432         maxlun = -1;
 433         while (cc.depth >= 0) {
 434                 reg = crom_search_key(&cc, CROM_LUN);
 435                 if (reg == NULL)
 436                         break;
 437                 lun = reg->val & 0xffff;
 438 SBP_DEBUG(0)
 439                 printf("target %d lun %d found\n", target->target_id, lun);
 440 END_DEBUG
 441                 if (maxlun < lun)
 442                         maxlun = lun;
 443                 crom_next(&cc);
 444         }
 445         if (maxlun < 0)
 446                 device_printf(target->sbp->fd.dev, "%d no LUN found\n",
 447                     target->target_id);
 448
 449         maxlun++;
 450         if (maxlun >= SBP_NUM_LUNS)
 451                 maxlun = SBP_NUM_LUNS;
 452
 453         /* Invalidiate stale devices */
 454         for (lun = 0; lun < target->num_lun; lun++) {
 455                 sdev = target->luns[lun];
 456                 if (sdev == NULL)
 457                         continue;
 458                 sdev->flags &= ~VALID_LUN;
 459                 if (lun >= maxlun) {
 460                         /* lost device */
 461                         sbp_cam_detach_sdev(sdev);
 462                         sbp_free_sdev(sdev);
 463                         target->luns[lun] = NULL;
 464                 }
 465         }
 466
 467         /* Reallocate */
 468         if (maxlun != target->num_lun) {
 469                 newluns = (struct sbp_dev **) realloc(target->luns,
 470                     sizeof(struct sbp_dev *) * maxlun,
 471                     M_SBP, M_NOWAIT | M_ZERO);
 472
 473                 if (newluns == NULL) {
 474                         printf("%s: realloc failed\n", __func__);
 475                         newluns = target->luns;
 476                         maxlun = target->num_lun;
 477                 }
 478
 479                 /*
 480                  * We must zero the extended region for the case
 481                  * realloc() doesn't allocate new buffer.
 482                  */
 483                 if (maxlun > target->num_lun)
 484                         bzero(&newluns[target->num_lun],
 485                             sizeof(struct sbp_dev *) *
 486                             (maxlun - target->num_lun));
 487
 488                 target->luns = newluns;
 489                 target->num_lun = maxlun;
 490         }
 491
 492         crom_init_context(&cc, target->fwdev->csrrom);
 493         while (cc.depth >= 0) {
 494                 int new = 0;
 495
 496                 reg = crom_search_key(&cc, CROM_LUN);
 497                 if (reg == NULL)
 498                         break;
 499                 lun = reg->val & 0xffff;
 500                 if (lun >= SBP_NUM_LUNS) {
 501                         printf("too large lun %d\n", lun);
 502                         goto next;
 503                 }
 504
 505                 sdev = target->luns[lun];
 506                 if (sdev == NULL) {
 507                         sdev = malloc(sizeof(struct sbp_dev),
 508                             M_SBP, M_NOWAIT | M_ZERO);
 509                         if (sdev == NULL) {
 510                                 printf("%s: malloc failed\n", __func__);
 511                                 goto next;
 512                         }
 513                         target->luns[lun] = sdev;
 514                         sdev->lun_id = lun;
 515                         sdev->target = target;
 516                         STAILQ_INIT(&sdev->ocbs);
 517                         callout_init_mtx(&sdev->login_callout, &sbp->mtx, 0);
 518                         sdev->status = SBP_DEV_RESET;
 519                         new = 1;
 520                         snprintf(sdev->bustgtlun, 32, "%s:%d:%d",
 521                                         device_get_nameunit(sdev->target->sbp->fd.dev),
 522                                         sdev->target->target_id,
 523                                         sdev->lun_id);
 524                 }
 525                 sdev->flags |= VALID_LUN;
 526                 sdev->type = (reg->val & 0xff0000) >> 16;
 527
 528                 if (new == 0)
 529                         goto next;
 530
 531                 fwdma_malloc(sbp->fd.fc,
 532                         /* alignment */ sizeof(uint32_t),
 533                         SBP_DMA_SIZE, &sdev->dma, BUS_DMA_NOWAIT |
 534                         BUS_DMA_COHERENT);
 535                 if (sdev->dma.v_addr == NULL) {
 536                         printf("%s: dma space allocation failed\n",
 537                                                         __func__);
 538                         free(sdev, M_SBP);
 539                         target->luns[lun] = NULL;
 540                         goto next;
 541                 }
 542                 sdev->login = (struct sbp_login_res *) sdev->dma.v_addr;
 543                 sdev->ocb = (struct sbp_ocb *)
 544                                 ((char *)sdev->dma.v_addr + SBP_LOGIN_SIZE);
 545                 bzero((char *)sdev->ocb,
 546                         sizeof(struct sbp_ocb) * SBP_QUEUE_LEN);
 547
 548                 STAILQ_INIT(&sdev->free_ocbs);
 549                 for (i = 0; i < SBP_QUEUE_LEN; i++) {
 550                         struct sbp_ocb *ocb;
 551                         ocb = &sdev->ocb[i];
 552                         ocb->bus_addr = sdev->dma.bus_addr
 553                                 + SBP_LOGIN_SIZE
 554                                 + sizeof(struct sbp_ocb) * i
 555                                 + offsetof(struct sbp_ocb, orb[0]);
 556                         if (bus_dmamap_create(sbp->dmat, 0, &ocb->dmamap)) {
 557                                 printf("sbp_attach: cannot create dmamap\n");
 558                                 /* XXX */
 559                                 goto next;
 560                         }
 561                         callout_init_mtx(&ocb->timer, &sbp->mtx, 0);
 562                         SBP_LOCK(sbp);
 563                         sbp_free_ocb(sdev, ocb);
 564                         SBP_UNLOCK(sbp);
 565                 }
 566 next:
 567                 crom_next(&cc);
 568         }
 569
 570         for (lun = 0; lun < target->num_lun; lun++) {
 571                 sdev = target->luns[lun];
 572                 if (sdev != NULL && (sdev->flags & VALID_LUN) == 0) {
 573                         sbp_cam_detach_sdev(sdev);
 574                         sbp_free_sdev(sdev);
 575                         target->luns[lun] = NULL;
 576                 }
 577         }
 578 }
 579
 580 static struct sbp_target *
 581 sbp_alloc_target(struct sbp_softc *sbp, struct fw_device *fwdev)
 582 {
 583         int i;
 584         struct sbp_target *target;
 585         struct crom_context cc;
 586         struct csrreg *reg;
 587
 588 SBP_DEBUG(1)
 589         printf("sbp_alloc_target\n");
 590 END_DEBUG
 591         i = sbp_new_target(sbp, fwdev);
 592         if (i < 0) {
 593                 device_printf(sbp->fd.dev, "increase SBP_NUM_TARGETS!\n");
 594                 return NULL;
 595         }
 596         /* new target */
 597         target = &sbp->targets[i];
 598         target->fwdev = fwdev;
 599         target->target_id = i;
 600         /* XXX we may want to reload mgm port after each bus reset */
 601         /* XXX there might be multiple management agents */
 602         crom_init_context(&cc, target->fwdev->csrrom);
 603         reg = crom_search_key(&cc, CROM_MGM);
 604         if (reg == NULL || reg->val == 0) {
 605                 printf("NULL management address\n");
 606                 target->fwdev = NULL;
 607                 return NULL;
 608         }
 609         target->mgm_hi = 0xffff;
 610         target->mgm_lo = 0xf0000000 | (reg->val << 2);
 611         target->mgm_ocb_cur = NULL;
 612 SBP_DEBUG(1)
 613         printf("target:%d mgm_port: %x\n", i, target->mgm_lo);
 614 END_DEBUG
 615         STAILQ_INIT(&target->xferlist);
 616         target->n_xfer = 0;
 617         STAILQ_INIT(&target->mgm_ocb_queue);
 618         callout_init_mtx(&target->mgm_ocb_timeout, &sbp->mtx, 0);
 619         callout_init_mtx(&target->scan_callout, &sbp->mtx, 0);
 620
 621         target->luns = NULL;
 622         target->num_lun = 0;
 623         return target;
 624 }
 625
 626 static void
 627 sbp_probe_lun(struct sbp_dev *sdev)
 628 {
 629         struct fw_device *fwdev;
 630         struct crom_context c, *cc = &c;
 631         struct csrreg *reg;
 632
 633         bzero(sdev->vendor, sizeof(sdev->vendor));
 634         bzero(sdev->product, sizeof(sdev->product));
 635
 636         fwdev = sdev->target->fwdev;
 637         crom_init_context(cc, fwdev->csrrom);
 638         /* get vendor string */
 639         crom_search_key(cc, CSRKEY_VENDOR);
 640         crom_next(cc);
 641         crom_parse_text(cc, sdev->vendor, sizeof(sdev->vendor));
 642         /* skip to the unit directory for SBP-2 */
 643         while ((reg = crom_search_key(cc, CSRKEY_VER)) != NULL) {
 644                 if (reg->val == CSRVAL_T10SBP2)
 645                         break;
 646                 crom_next(cc);
 647         }
 648         /* get firmware revision */
 649         reg = crom_search_key(cc, CSRKEY_FIRM_VER);
 650         if (reg != NULL)
 651                 snprintf(sdev->revision, sizeof(sdev->revision),
 652                                                 "%06x", reg->val);
 653         /* get product string */
 654         crom_search_key(cc, CSRKEY_MODEL);
 655         crom_next(cc);
 656         crom_parse_text(cc, sdev->product, sizeof(sdev->product));
 657 }
 658
 659 static void
 660 sbp_login_callout(void *arg)
 661 {
 662         struct sbp_dev *sdev = (struct sbp_dev *)arg;
 663         SBP_LOCK_ASSERT(sdev->target->sbp);
 664         sbp_mgm_orb(sdev, ORB_FUN_LGI, NULL);
 665 }
 666
 667 static void
 668 sbp_login(struct sbp_dev *sdev)
 669 {
 670         struct timeval delta;
 671         struct timeval t;
 672         int ticks = 0;
 673
 674         microtime(&delta);
 675         timevalsub(&delta, &sdev->target->sbp->last_busreset);
 676         t.tv_sec = login_delay / 1000;
 677         t.tv_usec = (login_delay % 1000) * 1000;
 678         timevalsub(&t, &delta);
 679         if (t.tv_sec >= 0 && t.tv_usec > 0)
 680                 ticks = (t.tv_sec * 1000 + t.tv_usec / 1000) * hz / 1000;
 681 SBP_DEBUG(0)
 682         printf("%s: sec = %jd usec = %ld ticks = %d\n", __func__,
 683             (intmax_t)t.tv_sec, t.tv_usec, ticks);
 684 END_DEBUG
 685         callout_reset(&sdev->login_callout, ticks,
 686                         sbp_login_callout, (void *)(sdev));
 687 }
 688
 689 #define SBP_FWDEV_ALIVE(fwdev) (((fwdev)->status == FWDEVATTACHED) \
 690         && crom_has_specver((fwdev)->csrrom, CSRVAL_ANSIT10, CSRVAL_T10SBP2))
 691
 692 static void
 693 sbp_probe_target(struct sbp_target *target)
 694 {
 695         struct sbp_softc *sbp = target->sbp;
 696         struct sbp_dev *sdev;
 697         int i, alive;
 698
 699         alive = SBP_FWDEV_ALIVE(target->fwdev);
 700 SBP_DEBUG(1)
 701         device_printf(sbp->fd.dev, "%s %d%salive\n",
 702                  __func__, target->target_id,
 703                 (!alive) ? " not " : "");
 704 END_DEBUG
 705
 706         sbp_alloc_lun(target);
 707
 708         /* XXX untimeout mgm_ocb and dequeue */
 709         for (i=0; i < target->num_lun; i++) {
 710                 sdev = target->luns[i];
 711                 if (sdev == NULL)
 712                         continue;
 713                 if (alive && (sdev->status != SBP_DEV_DEAD)) {
 714                         if (sdev->path != NULL) {
 715                                 xpt_freeze_devq(sdev->path, 1);
 716                                 sdev->freeze++;
 717                         }
 718                         sbp_probe_lun(sdev);
 719                         sbp_show_sdev_info(sdev);
 720
 721                         SBP_LOCK(sbp);
 722                         sbp_abort_all_ocbs(sdev, CAM_SCSI_BUS_RESET);
 723                         SBP_UNLOCK(sbp);
 724                         switch (sdev->status) {
 725                         case SBP_DEV_RESET:
 726                                 /* new or revived target */
 727                                 if (auto_login)
 728                                         sbp_login(sdev);
 729                                 break;
 730                         case SBP_DEV_TOATTACH:
 731                         case SBP_DEV_PROBE:
 732                         case SBP_DEV_ATTACHED:
 733                         case SBP_DEV_RETRY:
 734                         default:
 735                                 sbp_mgm_orb(sdev, ORB_FUN_RCN, NULL);
 736                                 break;
 737                         }
 738                 } else {
 739                         switch (sdev->status) {
 740                         case SBP_DEV_ATTACHED:
 741 SBP_DEBUG(0)
 742                                 /* the device has gone */
 743                                 device_printf(sbp->fd.dev, "%s: lost target\n",
 744                                         __func__);
 745 END_DEBUG
 746                                 if (sdev->path) {
 747                                         xpt_freeze_devq(sdev->path, 1);
 748                                         sdev->freeze++;
 749                                 }
 750                                 sdev->status = SBP_DEV_RETRY;
 751                                 sbp_cam_detach_sdev(sdev);
 752                                 sbp_free_sdev(sdev);
 753                                 target->luns[i] = NULL;
 754                                 break;
 755                         case SBP_DEV_PROBE:
 756                         case SBP_DEV_TOATTACH:
 757                                 sdev->status = SBP_DEV_RESET;
 758                                 break;
 759                         case SBP_DEV_RETRY:
 760                         case SBP_DEV_RESET:
 761                         case SBP_DEV_DEAD:
 762                                 break;
 763                         }
 764                 }
 765         }
 766 }
 767
 768 static void
 769 sbp_post_busreset(void *arg)
 770 {
 771         struct sbp_softc *sbp;
 772
 773         sbp = (struct sbp_softc *)arg;
 774 SBP_DEBUG(0)
 775         printf("sbp_post_busreset\n");
 776 END_DEBUG
 777         SBP_LOCK(sbp);
 778         if ((sbp->flags & SIMQ_FREEZED) == 0) {
 779                 xpt_freeze_simq(sbp->sim, /*count*/1);
 780                 sbp->flags |= SIMQ_FREEZED;
 781         }
 782         microtime(&sbp->last_busreset);
 783         SBP_UNLOCK(sbp);
 784 }
 785
 786 static void
 787 sbp_post_explore(void *arg)
 788 {
 789         struct sbp_softc *sbp = (struct sbp_softc *)arg;
 790         struct sbp_target *target;
 791         struct fw_device *fwdev;
 792         int i, alive;
 793
 794 SBP_DEBUG(0)
 795         printf("sbp_post_explore (sbp_cold=%d)\n", sbp_cold);
 796 END_DEBUG
 797         /* We need physical access */
 798         if (!firewire_phydma_enable)
 799                 return;
 800
 801         if (sbp_cold > 0)
 802                 sbp_cold--;
 803
 804         SBP_LOCK(sbp);
 805
 806         /* Garbage Collection */
 807         for (i = 0; i < SBP_NUM_TARGETS; i++) {
 808                 target = &sbp->targets[i];
 809                 if (target->fwdev == NULL)
 810                         continue;
 811
 812                 STAILQ_FOREACH(fwdev, &sbp->fd.fc->devices, link)
 813                         if (target->fwdev == fwdev)
 814                                 break;
 815                 if (fwdev == NULL) {
 816                         /* device has removed in lower driver */
 817                         sbp_cam_detach_target(target);
 818                         sbp_free_target(target);
 819                 }
 820         }
 821
 822         /* traverse device list */
 823         STAILQ_FOREACH(fwdev, &sbp->fd.fc->devices, link) {
 824 SBP_DEBUG(0)
 825                 device_printf(sbp->fd.dev,"%s:: EUI:%08x%08x %s attached, state=%d\n",
 826                                 __func__, fwdev->eui.hi, fwdev->eui.lo,
 827                                 (fwdev->status != FWDEVATTACHED) ? "not" : "",
 828                                 fwdev->status);
 829 END_DEBUG
 830                 alive = SBP_FWDEV_ALIVE(fwdev);
 831                 for (i = 0; i < SBP_NUM_TARGETS; i++) {
 832                         target = &sbp->targets[i];
 833                         if (target->fwdev == fwdev) {
 834                                 /* known target */
 835                                 break;
 836                         }
 837                 }
 838                 if (i == SBP_NUM_TARGETS) {
 839                         if (alive) {
 840                                 /* new target */
 841                                 target = sbp_alloc_target(sbp, fwdev);
 842                                 if (target == NULL)
 843                                         continue;
 844                         } else {
 845                                 continue;
 846                         }
 847                 }
 848
 849                 /*
 850                  * It is safe to drop the lock here as the target is already
 851                  * reserved, so there should be no contenders for it.
 852                  * And the target is not yet exposed, so there should not be
 853                  * any other accesses to it.
 854                  * Finally, the list being iterated is protected somewhere else.
 855                  */
 856                 SBP_UNLOCK(sbp);
 857                 sbp_probe_target(target);
 858                 SBP_LOCK(sbp);
 859                 if (target->num_lun == 0)
 860                         sbp_free_target(target);
 861         }
 862         if ((sbp->flags & SIMQ_FREEZED) != 0) {
 863                 xpt_release_simq(sbp->sim, /*run queue*/TRUE);
 864                 sbp->flags &= ~SIMQ_FREEZED;
 865         }
 866         SBP_UNLOCK(sbp);
 867 }
 868
 869 #if NEED_RESPONSE
 870 static void
 871 sbp_loginres_callback(struct fw_xfer *xfer)
 872 {
 873         struct sbp_dev *sdev;
 874         sdev = (struct sbp_dev *)xfer->sc;
 875 SBP_DEBUG(1)
 876         device_printf(sdev->target->sbp->fd.dev,"%s\n", __func__);
 877 END_DEBUG
 878         /* recycle */
 879         SBP_LOCK(sdev->target->sbp);
 880         STAILQ_INSERT_TAIL(&sdev->target->sbp->fwb.xferlist, xfer, link);
 881         SBP_UNLOCK(sdev->target->sbp);
 882         return;
 883 }
 884 #endif
 885
 886 static __inline void
 887 sbp_xfer_free(struct fw_xfer *xfer)
 888 {
 889         struct sbp_dev *sdev;
 890
 891         sdev = (struct sbp_dev *)xfer->sc;
 892         fw_xfer_unload(xfer);
 893         SBP_LOCK_ASSERT(sdev->target->sbp);
 894         STAILQ_INSERT_TAIL(&sdev->target->xferlist, xfer, link);
 895 }
 896
 897 static void
 898 sbp_reset_start_callback(struct fw_xfer *xfer)
 899 {
 900         struct sbp_dev *tsdev, *sdev = (struct sbp_dev *)xfer->sc;
 901         struct sbp_target *target = sdev->target;
 902         int i;
 903
 904         if (xfer->resp != 0) {
 905                 device_printf(sdev->target->sbp->fd.dev,
 906                         "%s: %s failed: resp=%d\n", __func__, sdev->bustgtlun, xfer->resp);
 907         }
 908
 909         SBP_LOCK(target->sbp);
 910         for (i = 0; i < target->num_lun; i++) {
 911                 tsdev = target->luns[i];
 912                 if (tsdev != NULL && tsdev->status == SBP_DEV_LOGIN)
 913                         sbp_login(tsdev);
 914         }
 915         SBP_UNLOCK(target->sbp);
 916 }
 917
 918 static void
 919 sbp_reset_start(struct sbp_dev *sdev)
 920 {
 921         struct fw_xfer *xfer;
 922         struct fw_pkt *fp;
 923
 924 SBP_DEBUG(0)
 925         device_printf(sdev->target->sbp->fd.dev,
 926                         "%s:%s\n", __func__,sdev->bustgtlun);
 927 END_DEBUG
 928
 929         xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0);
 930         xfer->hand = sbp_reset_start_callback;
 931         fp = &xfer->send.hdr;
 932         fp->mode.wreqq.dest_hi = 0xffff;
 933         fp->mode.wreqq.dest_lo = 0xf0000000 | RESET_START;
 934         fp->mode.wreqq.data = htonl(0xf);
 935         fw_asyreq(xfer->fc, -1, xfer);
 936 }
 937
 938 static void
 939 sbp_mgm_callback(struct fw_xfer *xfer)
 940 {
 941         struct sbp_dev *sdev;
 942         int resp;
 943
 944         sdev = (struct sbp_dev *)xfer->sc;
 945
 946 SBP_DEBUG(1)
 947         device_printf(sdev->target->sbp->fd.dev,
 948                 "%s:%s\n", __func__, sdev->bustgtlun);
 949 END_DEBUG
 950         resp = xfer->resp;
 951         SBP_LOCK(sdev->target->sbp);
 952         sbp_xfer_free(xfer);
 953         SBP_UNLOCK(sdev->target->sbp);
 954 }
 955
 956 static struct sbp_dev *
 957 sbp_next_dev(struct sbp_target *target, int lun)
 958 {
 959         struct sbp_dev **sdevp;
 960         int i;
 961
 962         for (i = lun, sdevp = &target->luns[lun]; i < target->num_lun;
 963             i++, sdevp++)
 964                 if (*sdevp != NULL && (*sdevp)->status == SBP_DEV_PROBE)
 965                         return (*sdevp);
 966         return (NULL);
 967 }
 968
 969 #define SCAN_PRI 1
 970 static void
 971 sbp_cam_scan_lun(struct cam_periph *periph, union ccb *ccb)
 972 {
 973         struct sbp_softc *sbp;
 974         struct sbp_target *target;
 975         struct sbp_dev *sdev;
 976
 977         sdev = (struct sbp_dev *) ccb->ccb_h.ccb_sdev_ptr;
 978         target = sdev->target;
 979         sbp = target->sbp;
 980         SBP_LOCK(sbp);
 981 SBP_DEBUG(0)
 982         device_printf(sbp->fd.dev,
 983                 "%s:%s\n", __func__, sdev->bustgtlun);
 984 END_DEBUG
 985         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
 986                 sdev->status = SBP_DEV_ATTACHED;
 987         } else {
 988                 device_printf(sbp->fd.dev,
 989                         "%s:%s failed\n", __func__, sdev->bustgtlun);
 990         }
 991         sdev = sbp_next_dev(target, sdev->lun_id + 1);
 992         if (sdev == NULL) {
 993                 SBP_UNLOCK(sbp);
 994                 free(ccb, M_SBP);
 995                 return;
 996         }
 997         /* reuse ccb */
 998         xpt_setup_ccb(&ccb->ccb_h, sdev->path, SCAN_PRI);
 999         ccb->ccb_h.ccb_sdev_ptr = sdev;
1000         ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
1001         SBP_UNLOCK(sbp);
1002
1003         xpt_action(ccb);
1004         xpt_release_devq(sdev->path, sdev->freeze, TRUE);
1005         sdev->freeze = 1;
1006 }
1007
1008 static void
1009 sbp_cam_scan_target(void *arg)
1010 {
1011         struct sbp_target *target = (struct sbp_target *)arg;
1012         struct sbp_dev *sdev;
1013         union ccb *ccb;
1014
1015         SBP_LOCK_ASSERT(target->sbp);
1016         sdev = sbp_next_dev(target, 0);
1017         if (sdev == NULL) {
1018                 printf("sbp_cam_scan_target: nothing to do for target%d\n",
1019                                                         target->target_id);
1020                 return;
1021         }
1022 SBP_DEBUG(0)
1023         device_printf(sdev->target->sbp->fd.dev,
1024                 "%s:%s\n", __func__, sdev->bustgtlun);
1025 END_DEBUG
1026         ccb = malloc(sizeof(union ccb), M_SBP, M_NOWAIT | M_ZERO);
1027         if (ccb == NULL) {
1028                 printf("sbp_cam_scan_target: malloc failed\n");
1029                 return;
1030         }
1031         SBP_UNLOCK(target->sbp);
1032
1033         xpt_setup_ccb(&ccb->ccb_h, sdev->path, SCAN_PRI);
1034         ccb->ccb_h.func_code = XPT_SCAN_LUN;
1035         ccb->ccb_h.cbfcnp = sbp_cam_scan_lun;
1036         ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
1037         ccb->crcn.flags = CAM_FLAG_NONE;
1038         ccb->ccb_h.ccb_sdev_ptr = sdev;
1039
1040         /* The scan is in progress now. */
1041         xpt_action(ccb);
1042
1043         SBP_LOCK(target->sbp);
1044         xpt_release_devq(sdev->path, sdev->freeze, TRUE);
1045         sdev->freeze = 1;
1046 }
1047
1048 static __inline void
1049 sbp_scan_dev(struct sbp_dev *sdev)
1050 {
1051         sdev->status = SBP_DEV_PROBE;
1052         callout_reset_sbt(&sdev->target->scan_callout, SBT_1MS * scan_delay, 0,
1053             sbp_cam_scan_target, (void *)sdev->target, 0);
1054 }
1055
1056 static void
1057 sbp_do_attach(struct fw_xfer *xfer)
1058 {
1059         struct sbp_dev *sdev;
1060         struct sbp_target *target;
1061         struct sbp_softc *sbp;
1062
1063         sdev = (struct sbp_dev *)xfer->sc;
1064         target = sdev->target;
1065         sbp = target->sbp;
1066         SBP_LOCK(sbp);
1067 SBP_DEBUG(0)
1068         device_printf(sdev->target->sbp->fd.dev,
1069                 "%s:%s\n", __func__, sdev->bustgtlun);
1070 END_DEBUG
1071         sbp_xfer_free(xfer);
1072
1073         if (sdev->path == NULL)
1074                 xpt_create_path(&sdev->path, NULL,
1075                         cam_sim_path(target->sbp->sim),
1076                         target->target_id, sdev->lun_id);
1077
1078         /*
1079          * Let CAM scan the bus if we are in the boot process.
1080          * XXX xpt_scan_bus cannot detect LUN larger than 0
1081          * if LUN 0 doesn't exist.
1082          */
1083         if (sbp_cold > 0) {
1084                 sdev->status = SBP_DEV_ATTACHED;
1085                 SBP_UNLOCK(sbp);
1086                 return;
1087         }
1088
1089         sbp_scan_dev(sdev);
1090         SBP_UNLOCK(sbp);
1091 }
1092
1093 static void
1094 sbp_agent_reset_callback(struct fw_xfer *xfer)
1095 {
1096         struct sbp_dev *sdev;
1097
1098         sdev = (struct sbp_dev *)xfer->sc;
1099 SBP_DEBUG(1)
1100         device_printf(sdev->target->sbp->fd.dev,
1101                         "%s:%s\n", __func__, sdev->bustgtlun);
1102 END_DEBUG
1103         if (xfer->resp != 0) {
1104                 device_printf(sdev->target->sbp->fd.dev,
1105                         "%s:%s resp=%d\n", __func__, sdev->bustgtlun, xfer->resp);
1106         }
1107
1108         SBP_LOCK(sdev->target->sbp);
1109         sbp_xfer_free(xfer);
1110         if (sdev->path) {
1111                 xpt_release_devq(sdev->path, sdev->freeze, TRUE);
1112                 sdev->freeze = 0;
1113         }
1114         SBP_UNLOCK(sdev->target->sbp);
1115 }
1116
1117 static void
1118 sbp_agent_reset(struct sbp_dev *sdev)
1119 {
1120         struct fw_xfer *xfer;
1121         struct fw_pkt *fp;
1122
1123         SBP_LOCK_ASSERT(sdev->target->sbp);
1124 SBP_DEBUG(0)
1125         device_printf(sdev->target->sbp->fd.dev,
1126                 "%s:%s\n", __func__, sdev->bustgtlun);
1127 END_DEBUG
1128         xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0x04);
1129         if (xfer == NULL)
1130                 return;
1131         if (sdev->status == SBP_DEV_ATTACHED || sdev->status == SBP_DEV_PROBE)
1132                 xfer->hand = sbp_agent_reset_callback;
1133         else
1134                 xfer->hand = sbp_do_attach;
1135         fp = &xfer->send.hdr;
1136         fp->mode.wreqq.data = htonl(0xf);
1137         fw_asyreq(xfer->fc, -1, xfer);
1138         sbp_abort_all_ocbs(sdev, CAM_BDR_SENT);
1139 }
1140
1141 static void
1142 sbp_busy_timeout_callback(struct fw_xfer *xfer)
1143 {
1144         struct sbp_dev *sdev;
1145
1146         sdev = (struct sbp_dev *)xfer->sc;
1147 SBP_DEBUG(1)
1148         device_printf(sdev->target->sbp->fd.dev,
1149                 "%s:%s\n", __func__, sdev->bustgtlun);
1150 END_DEBUG
1151         SBP_LOCK(sdev->target->sbp);
1152         sbp_xfer_free(xfer);
1153         sbp_agent_reset(sdev);
1154         SBP_UNLOCK(sdev->target->sbp);
1155 }
1156
1157 static void
1158 sbp_busy_timeout(struct sbp_dev *sdev)
1159 {
1160         struct fw_pkt *fp;
1161         struct fw_xfer *xfer;
1162 SBP_DEBUG(0)
1163         device_printf(sdev->target->sbp->fd.dev,
1164                 "%s:%s\n", __func__, sdev->bustgtlun);
1165 END_DEBUG
1166         xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0);
1167
1168         xfer->hand = sbp_busy_timeout_callback;
1169         fp = &xfer->send.hdr;
1170         fp->mode.wreqq.dest_hi = 0xffff;
1171         fp->mode.wreqq.dest_lo = 0xf0000000 | BUSY_TIMEOUT;
1172         fp->mode.wreqq.data = htonl((1 << (13 + 12)) | 0xf);
1173         fw_asyreq(xfer->fc, -1, xfer);
1174 }
1175
1176 static void
1177 sbp_orb_pointer_callback(struct fw_xfer *xfer)
1178 {
1179         struct sbp_dev *sdev;
1180         sdev = (struct sbp_dev *)xfer->sc;
1181
1182 SBP_DEBUG(2)
1183         device_printf(sdev->target->sbp->fd.dev,
1184                 "%s:%s\n", __func__, sdev->bustgtlun);
1185 END_DEBUG
1186         if (xfer->resp != 0) {
1187                 /* XXX */
1188                 printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
1189         }
1190         SBP_LOCK(sdev->target->sbp);
1191         sbp_xfer_free(xfer);
1192
1193         sdev->flags &= ~ORB_POINTER_ACTIVE;
1194
1195         if ((sdev->flags & ORB_POINTER_NEED) != 0) {
1196                 struct sbp_ocb *ocb;
1197
1198                 sdev->flags &= ~ORB_POINTER_NEED;
1199                 ocb = STAILQ_FIRST(&sdev->ocbs);
1200                 if (ocb != NULL)
1201                         sbp_orb_pointer(sdev, ocb);
1202         }
1203         SBP_UNLOCK(sdev->target->sbp);
1204         return;
1205 }
1206
1207 static void
1208 sbp_orb_pointer(struct sbp_dev *sdev, struct sbp_ocb *ocb)
1209 {
1210         struct fw_xfer *xfer;
1211         struct fw_pkt *fp;
1212 SBP_DEBUG(1)
1213         device_printf(sdev->target->sbp->fd.dev,
1214                 "%s:%s 0x%08x\n",
1215                 __func__, sdev->bustgtlun,
1216                 (uint32_t)ocb->bus_addr);
1217 END_DEBUG
1218
1219         SBP_LOCK_ASSERT(sdev->target->sbp);
1220
1221         if ((sdev->flags & ORB_POINTER_ACTIVE) != 0) {
1222 SBP_DEBUG(0)
1223                 printf("%s: orb pointer active\n", __func__);
1224 END_DEBUG
1225                 sdev->flags |= ORB_POINTER_NEED;
1226                 return;
1227         }
1228
1229         sdev->flags |= ORB_POINTER_ACTIVE;
1230         xfer = sbp_write_cmd(sdev, FWTCODE_WREQB, 0x08);
1231         if (xfer == NULL)
1232                 return;
1233         xfer->hand = sbp_orb_pointer_callback;
1234
1235         fp = &xfer->send.hdr;
1236         fp->mode.wreqb.len = 8;
1237         fp->mode.wreqb.extcode = 0;
1238         xfer->send.payload[0] =
1239                 htonl(((sdev->target->sbp->fd.fc->nodeid | FWLOCALBUS) << 16));
1240         xfer->send.payload[1] = htonl((uint32_t)ocb->bus_addr);
1241
1242         if (fw_asyreq(xfer->fc, -1, xfer) != 0) {
1243                 sbp_xfer_free(xfer);
1244                 ocb->ccb->ccb_h.status = CAM_REQ_INVALID;
1245                 xpt_done(ocb->ccb);
1246         }
1247 }
1248
1249 static void
1250 sbp_doorbell_callback(struct fw_xfer *xfer)
1251 {
1252         struct sbp_dev *sdev;
1253         sdev = (struct sbp_dev *)xfer->sc;
1254
1255 SBP_DEBUG(1)
1256         device_printf(sdev->target->sbp->fd.dev,
1257                 "%s:%s\n", __func__, sdev->bustgtlun);
1258 END_DEBUG
1259         if (xfer->resp != 0) {
1260                 /* XXX */
1261                 device_printf(sdev->target->sbp->fd.dev,
1262                         "%s: xfer->resp = %d\n", __func__, xfer->resp);
1263         }
1264         SBP_LOCK(sdev->target->sbp);
1265         sbp_xfer_free(xfer);
1266         sdev->flags &= ~ORB_DOORBELL_ACTIVE;
1267         if ((sdev->flags & ORB_DOORBELL_NEED) != 0) {
1268                 sdev->flags &= ~ORB_DOORBELL_NEED;
1269                 sbp_doorbell(sdev);
1270         }
1271         SBP_UNLOCK(sdev->target->sbp);
1272 }
1273
1274 static void
1275 sbp_doorbell(struct sbp_dev *sdev)
1276 {
1277         struct fw_xfer *xfer;
1278         struct fw_pkt *fp;
1279 SBP_DEBUG(1)
1280         device_printf(sdev->target->sbp->fd.dev,
1281                 "%s:%s\n", __func__, sdev->bustgtlun);
1282 END_DEBUG
1283
1284         if ((sdev->flags & ORB_DOORBELL_ACTIVE) != 0) {
1285                 sdev->flags |= ORB_DOORBELL_NEED;
1286                 return;
1287         }
1288         sdev->flags |= ORB_DOORBELL_ACTIVE;
1289         xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0x10);
1290         if (xfer == NULL)
1291                 return;
1292         xfer->hand = sbp_doorbell_callback;
1293         fp = &xfer->send.hdr;
1294         fp->mode.wreqq.data = htonl(0xf);
1295         fw_asyreq(xfer->fc, -1, xfer);
1296 }
1297
1298 static struct fw_xfer *
1299 sbp_write_cmd(struct sbp_dev *sdev, int tcode, int offset)
1300 {
1301         struct fw_xfer *xfer;
1302         struct fw_pkt *fp;
1303         struct sbp_target *target;
1304         int new = 0;
1305
1306         SBP_LOCK_ASSERT(sdev->target->sbp);
1307
1308         target = sdev->target;
1309         xfer = STAILQ_FIRST(&target->xferlist);
1310         if (xfer == NULL) {
1311                 if (target->n_xfer > 5 /* XXX */) {
1312                         printf("sbp: no more xfer for this target\n");
1313                         return (NULL);
1314                 }
1315                 xfer = fw_xfer_alloc_buf(M_SBP, 8, 0);
1316                 if (xfer == NULL) {
1317                         printf("sbp: fw_xfer_alloc_buf failed\n");
1318                         return NULL;
1319                 }
1320                 target->n_xfer++;
1321                 if (debug)
1322                         printf("sbp: alloc %d xfer\n", target->n_xfer);
1323                 new = 1;
1324         } else {
1325                 STAILQ_REMOVE_HEAD(&target->xferlist, link);
1326         }
1327
1328         if (new) {
1329                 xfer->recv.pay_len = 0;
1330                 xfer->send.spd = min(sdev->target->fwdev->speed, max_speed);
1331                 xfer->fc = sdev->target->sbp->fd.fc;
1332         }
1333
1334         if (tcode == FWTCODE_WREQB)
1335                 xfer->send.pay_len = 8;
1336         else
1337                 xfer->send.pay_len = 0;
1338
1339         xfer->sc = (caddr_t)sdev;
1340         fp = &xfer->send.hdr;
1341         fp->mode.wreqq.dest_hi = sdev->login->cmd_hi;
1342         fp->mode.wreqq.dest_lo = sdev->login->cmd_lo + offset;
1343         fp->mode.wreqq.tlrt = 0;
1344         fp->mode.wreqq.tcode = tcode;
1345         fp->mode.wreqq.pri = 0;
1346         fp->mode.wreqq.dst = FWLOCALBUS | sdev->target->fwdev->dst;
1347
1348         return xfer;
1349 }
1350
1351 static void
1352 sbp_mgm_orb(struct sbp_dev *sdev, int func, struct sbp_ocb *aocb)
1353 {
1354         struct fw_xfer *xfer;
1355         struct fw_pkt *fp;
1356         struct sbp_ocb *ocb;
1357         struct sbp_target *target;
1358         int nid;
1359
1360         target = sdev->target;
1361         nid = target->sbp->fd.fc->nodeid | FWLOCALBUS;
1362
1363         SBP_LOCK_ASSERT(target->sbp);
1364         if (func == ORB_FUN_RUNQUEUE) {
1365                 ocb = STAILQ_FIRST(&target->mgm_ocb_queue);
1366                 if (target->mgm_ocb_cur != NULL || ocb == NULL) {
1367                         return;
1368                 }
1369                 STAILQ_REMOVE_HEAD(&target->mgm_ocb_queue, ocb);
1370                 goto start;
1371         }
1372         if ((ocb = sbp_get_ocb(sdev)) == NULL) {
1373                 /* XXX */
1374                 return;
1375         }
1376         ocb->flags = OCB_ACT_MGM;
1377         ocb->sdev = sdev;
1378
1379         bzero((void *)ocb->orb, sizeof(ocb->orb));
1380         ocb->orb[6] = htonl((nid << 16) | SBP_BIND_HI);
1381         ocb->orb[7] = htonl(SBP_DEV2ADDR(target->target_id, sdev->lun_id));
1382
1383 SBP_DEBUG(0)
1384         device_printf(sdev->target->sbp->fd.dev,
1385                  "%s:%s %s\n",
1386                  __func__,sdev->bustgtlun,
1387                  orb_fun_name[(func >> 16) & 0xf]);
1388 END_DEBUG
1389         switch (func) {
1390         case ORB_FUN_LGI:
1391                 ocb->orb[0] = ocb->orb[1] = 0; /* password */
1392                 ocb->orb[2] = htonl(nid << 16);
1393                 ocb->orb[3] = htonl(sdev->dma.bus_addr);
1394                 ocb->orb[4] = htonl(ORB_NOTIFY | sdev->lun_id);
1395                 if (ex_login)
1396                         ocb->orb[4] |= htonl(ORB_EXV);
1397                 ocb->orb[5] = htonl(SBP_LOGIN_SIZE);
1398                 fwdma_sync(&sdev->dma, BUS_DMASYNC_PREREAD);
1399                 break;
1400         case ORB_FUN_ATA:
1401                 ocb->orb[0] = htonl((0 << 16) | 0);
1402                 ocb->orb[1] = htonl(aocb->bus_addr & 0xffffffff);
1403                 /* fall through */
1404         case ORB_FUN_RCN:
1405         case ORB_FUN_LGO:
1406         case ORB_FUN_LUR:
1407         case ORB_FUN_RST:
1408         case ORB_FUN_ATS:
1409                 ocb->orb[4] = htonl(ORB_NOTIFY | func | sdev->login->id);
1410                 break;
1411         }
1412
1413         if (target->mgm_ocb_cur != NULL) {
1414                 /* there is a standing ORB */
1415                 STAILQ_INSERT_TAIL(&sdev->target->mgm_ocb_queue, ocb, ocb);
1416                 return;
1417         }
1418 start:
1419         target->mgm_ocb_cur = ocb;
1420
1421         callout_reset(&target->mgm_ocb_timeout, 5 * hz,
1422                                 sbp_mgm_timeout, (caddr_t)ocb);
1423         xfer = sbp_write_cmd(sdev, FWTCODE_WREQB, 0);
1424         if (xfer == NULL) {
1425                 return;
1426         }
1427         xfer->hand = sbp_mgm_callback;
1428
1429         fp = &xfer->send.hdr;
1430         fp->mode.wreqb.dest_hi = sdev->target->mgm_hi;
1431         fp->mode.wreqb.dest_lo = sdev->target->mgm_lo;
1432         fp->mode.wreqb.len = 8;
1433         fp->mode.wreqb.extcode = 0;
1434         xfer->send.payload[0] = htonl(nid << 16);
1435         xfer->send.payload[1] = htonl(ocb->bus_addr & 0xffffffff);
1436
1437         fw_asyreq(xfer->fc, -1, xfer);
1438 }
1439
1440 static void
1441 sbp_print_scsi_cmd(struct sbp_ocb *ocb)
1442 {
1443         struct ccb_scsiio *csio;
1444
1445         csio = &ocb->ccb->csio;
1446         printf("%s:%d:%jx XPT_SCSI_IO: "
1447                 "cmd: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x"
1448                 ", flags: 0x%02x, "
1449                 "%db cmd/%db data/%db sense\n",
1450                 device_get_nameunit(ocb->sdev->target->sbp->fd.dev),
1451                 ocb->ccb->ccb_h.target_id,
1452                 (uintmax_t)ocb->ccb->ccb_h.target_lun,
1453                 csio->cdb_io.cdb_bytes[0],
1454                 csio->cdb_io.cdb_bytes[1],
1455                 csio->cdb_io.cdb_bytes[2],
1456                 csio->cdb_io.cdb_bytes[3],
1457                 csio->cdb_io.cdb_bytes[4],
1458                 csio->cdb_io.cdb_bytes[5],
1459                 csio->cdb_io.cdb_bytes[6],
1460                 csio->cdb_io.cdb_bytes[7],
1461                 csio->cdb_io.cdb_bytes[8],
1462                 csio->cdb_io.cdb_bytes[9],
1463                 ocb->ccb->ccb_h.flags & CAM_DIR_MASK,
1464                 csio->cdb_len, csio->dxfer_len,
1465                 csio->sense_len);
1466 }
1467
1468 static void
1469 sbp_scsi_status(struct sbp_status *sbp_status, struct sbp_ocb *ocb)
1470 {
1471         struct sbp_cmd_status *sbp_cmd_status;
1472         struct scsi_sense_data_fixed *sense;
1473
1474         sbp_cmd_status = (struct sbp_cmd_status *)sbp_status->data;
1475         sense = (struct scsi_sense_data_fixed *)&ocb->ccb->csio.sense_data;
1476
1477 SBP_DEBUG(0)
1478         sbp_print_scsi_cmd(ocb);
1479         /* XXX need decode status */
1480         printf("%s: SCSI status %x sfmt %x valid %x key %x code %x qlfr %x len %d\n",
1481                 ocb->sdev->bustgtlun,
1482                 sbp_cmd_status->status,
1483                 sbp_cmd_status->sfmt,
1484                 sbp_cmd_status->valid,
1485                 sbp_cmd_status->s_key,
1486                 sbp_cmd_status->s_code,
1487                 sbp_cmd_status->s_qlfr,
1488                 sbp_status->len);
1489 END_DEBUG
1490
1491         switch (sbp_cmd_status->status) {
1492         case SCSI_STATUS_CHECK_COND:
1493         case SCSI_STATUS_BUSY:
1494         case SCSI_STATUS_CMD_TERMINATED:
1495                 if (sbp_cmd_status->sfmt == SBP_SFMT_CURR) {
1496                         sense->error_code = SSD_CURRENT_ERROR;
1497                 } else {
1498                         sense->error_code = SSD_DEFERRED_ERROR;
1499                 }
1500                 if (sbp_cmd_status->valid)
1501                         sense->error_code |= SSD_ERRCODE_VALID;
1502                 sense->flags = sbp_cmd_status->s_key;
1503                 if (sbp_cmd_status->mark)
1504                         sense->flags |= SSD_FILEMARK;
1505                 if (sbp_cmd_status->eom)
1506                         sense->flags |= SSD_EOM;
1507                 if (sbp_cmd_status->ill_len)
1508                         sense->flags |= SSD_ILI;
1509
1510                 bcopy(&sbp_cmd_status->info, &sense->info[0], 4);
1511
1512                 if (sbp_status->len <= 1)
1513                         /* XXX not scsi status. shouldn't be happened */
1514                         sense->extra_len = 0;
1515                 else if (sbp_status->len <= 4)
1516                         /* add_sense_code(_qual), info, cmd_spec_info */
1517                         sense->extra_len = 6;
1518                 else
1519                         /* fru, sense_key_spec */
1520                         sense->extra_len = 10;
1521
1522                 bcopy(&sbp_cmd_status->cdb, &sense->cmd_spec_info[0], 4);
1523
1524                 sense->add_sense_code = sbp_cmd_status->s_code;
1525                 sense->add_sense_code_qual = sbp_cmd_status->s_qlfr;
1526                 sense->fru = sbp_cmd_status->fru;
1527
1528                 bcopy(&sbp_cmd_status->s_keydep[0],
1529                     &sense->sense_key_spec[0], 3);
1530
1531                 ocb->ccb->csio.scsi_status = sbp_cmd_status->status;
1532                 ocb->ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR
1533                                                         | CAM_AUTOSNS_VALID;
1534 /*
1535 {
1536                 uint8_t j, *tmp;
1537                 tmp = sense;
1538                 for (j = 0; j < 32; j += 8) {
1539                         printf("sense %02x%02x %02x%02x %02x%02x %02x%02x\n",
1540                                 tmp[j], tmp[j + 1], tmp[j + 2], tmp[j + 3],
1541                                 tmp[j + 4], tmp[j + 5], tmp[j + 6], tmp[j + 7]);
1542                 }
1543
1544 }
1545 */
1546                 break;
1547         default:
1548                 device_printf(ocb->sdev->target->sbp->fd.dev,
1549                                 "%s:%s unknown scsi status 0x%x\n",
1550                                 __func__, ocb->sdev->bustgtlun,
1551                                 sbp_cmd_status->status);
1552         }
1553 }
1554
1555 static void
1556 sbp_fix_inq_data(struct sbp_ocb *ocb)
1557 {
1558         union ccb *ccb;
1559         struct sbp_dev *sdev;
1560         struct scsi_inquiry_data *inq;
1561
1562         ccb = ocb->ccb;
1563         sdev = ocb->sdev;
1564
1565         if (ccb->csio.cdb_io.cdb_bytes[1] & SI_EVPD)
1566                 return;
1567 SBP_DEBUG(1)
1568         device_printf(sdev->target->sbp->fd.dev,
1569                 "%s:%s\n", __func__, sdev->bustgtlun);
1570 END_DEBUG
1571         inq = (struct scsi_inquiry_data *) ccb->csio.data_ptr;
1572         switch (SID_TYPE(inq)) {
1573         case T_DIRECT:
1574 #if 0
1575                 /*
1576                  * XXX Convert Direct Access device to RBC.
1577                  * I've never seen FireWire DA devices which support READ_6.
1578                  */
1579                 if (SID_TYPE(inq) == T_DIRECT)
1580                         inq->device |= T_RBC; /*  T_DIRECT == 0 */
1581 #endif
1582                 /* fall through */
1583         case T_RBC:
1584                 /*
1585                  * Override vendor/product/revision information.
1586                  * Some devices sometimes return strange strings.
1587                  */
1588 #if 1
1589                 bcopy(sdev->vendor, inq->vendor, sizeof(inq->vendor));
1590                 bcopy(sdev->product, inq->product, sizeof(inq->product));
1591                 bcopy(sdev->revision + 2, inq->revision, sizeof(inq->revision));
1592 #endif
1593                 break;
1594         }
1595         /*
1596          * Force to enable/disable tagged queuing.
1597          * XXX CAM also checks SCP_QUEUE_DQUE flag in the control mode page.
1598          */
1599         if (sbp_tags > 0)
1600                 inq->flags |= SID_CmdQue;
1601         else if (sbp_tags < 0)
1602                 inq->flags &= ~SID_CmdQue;
1603
1604 }
1605
1606 static void
1607 sbp_recv1(struct fw_xfer *xfer)
1608 {
1609         struct fw_pkt *rfp;
1610 #if NEED_RESPONSE
1611         struct fw_pkt *sfp;
1612 #endif
1613         struct sbp_softc *sbp;
1614         struct sbp_dev *sdev;
1615         struct sbp_ocb *ocb;
1616         struct sbp_login_res *login_res = NULL;
1617         struct sbp_status *sbp_status;
1618         struct sbp_target *target;
1619         int     orb_fun, status_valid0, status_valid, t, l, reset_agent = 0;
1620         uint32_t addr;
1621 /*
1622         uint32_t *ld;
1623         ld = xfer->recv.buf;
1624 printf("sbp %x %d %d %08x %08x %08x %08x\n",
1625                         xfer->resp, xfer->recv.len, xfer->recv.off, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
1626 printf("sbp %08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
1627 printf("sbp %08x %08x %08x %08x\n", ntohl(ld[8]), ntohl(ld[9]), ntohl(ld[10]), ntohl(ld[11]));
1628 */
1629         sbp = (struct sbp_softc *)xfer->sc;
1630         SBP_LOCK_ASSERT(sbp);
1631         if (xfer->resp != 0) {
1632                 printf("sbp_recv: xfer->resp = %d\n", xfer->resp);
1633                 goto done0;
1634         }
1635         if (xfer->recv.payload == NULL) {
1636                 printf("sbp_recv: xfer->recv.payload == NULL\n");
1637                 goto done0;
1638         }
1639         rfp = &xfer->recv.hdr;
1640         if (rfp->mode.wreqb.tcode != FWTCODE_WREQB) {
1641                 printf("sbp_recv: tcode = %d\n", rfp->mode.wreqb.tcode);
1642                 goto done0;
1643         }
1644         sbp_status = (struct sbp_status *)xfer->recv.payload;
1645         addr = rfp->mode.wreqb.dest_lo;
1646 SBP_DEBUG(2)
1647         printf("received address 0x%x\n", addr);
1648 END_DEBUG
1649         t = SBP_ADDR2TRG(addr);
1650         if (t >= SBP_NUM_TARGETS) {
1651                 device_printf(sbp->fd.dev,
1652                         "sbp_recv1: invalid target %d\n", t);
1653                 goto done0;
1654         }
1655         target = &sbp->targets[t];
1656         l = SBP_ADDR2LUN(addr);
1657         if (l >= target->num_lun || target->luns[l] == NULL) {
1658                 device_printf(sbp->fd.dev,
1659                         "sbp_recv1: invalid lun %d (target=%d)\n", l, t);
1660                 goto done0;
1661         }
1662         sdev = target->luns[l];
1663
1664         ocb = NULL;
1665         switch (sbp_status->src) {
1666         case 0:
1667         case 1:
1668                 /* check mgm_ocb_cur first */
1669                 ocb  = target->mgm_ocb_cur;
1670                 if (ocb != NULL) {
1671                         if (OCB_MATCH(ocb, sbp_status)) {
1672                                 callout_stop(&target->mgm_ocb_timeout);
1673                                 target->mgm_ocb_cur = NULL;
1674                                 break;
1675                         }
1676                 }
1677                 ocb = sbp_dequeue_ocb(sdev, sbp_status);
1678                 if (ocb == NULL) {
1679                         device_printf(sdev->target->sbp->fd.dev,
1680                                 "%s:%s No ocb(%x) on the queue\n",
1681                                 __func__,sdev->bustgtlun,
1682                                 ntohl(sbp_status->orb_lo));
1683                 }
1684                 break;
1685         case 2:
1686                 /* unsolicit */
1687                 device_printf(sdev->target->sbp->fd.dev,
1688                         "%s:%s unsolicit status received\n",
1689                         __func__, sdev->bustgtlun);
1690                 break;
1691         default:
1692                 device_printf(sdev->target->sbp->fd.dev,
1693                         "%s:%s unknown sbp_status->src\n",
1694                         __func__, sdev->bustgtlun);
1695         }
1696
1697         status_valid0 = (sbp_status->src < 2
1698                         && sbp_status->resp == ORB_RES_CMPL
1699                         && sbp_status->dead == 0);
1700         status_valid = (status_valid0 && sbp_status->status == 0);
1701
1702         if (!status_valid0 || debug > 2) {
1703                 int status;
1704 SBP_DEBUG(0)
1705                 device_printf(sdev->target->sbp->fd.dev,
1706                         "%s:%s ORB status src:%x resp:%x dead:%x"
1707                                 " len:%x stat:%x orb:%x%08x\n",
1708                         __func__, sdev->bustgtlun,
1709                         sbp_status->src, sbp_status->resp, sbp_status->dead,
1710                         sbp_status->len, sbp_status->status,
1711                         ntohs(sbp_status->orb_hi), ntohl(sbp_status->orb_lo));
1712 END_DEBUG
1713                 device_printf(sdev->target->sbp->fd.dev,
1714                                 "%s\n", sdev->bustgtlun);
1715                 status = sbp_status->status;
1716                 switch (sbp_status->resp) {
1717                 case 0:
1718                         if (status > MAX_ORB_STATUS0)
1719                                 printf("%s\n", orb_status0[MAX_ORB_STATUS0]);
1720                         else
1721                                 printf("%s\n", orb_status0[status]);
1722                         break;
1723                 case 1:
1724                         printf("Obj: %s, Error: %s\n",
1725                                 orb_status1_object[(status >> 6) & 3],
1726                                 orb_status1_serial_bus_error[status & 0xf]);
1727                         break;
1728                 case 2:
1729                         printf("Illegal request\n");
1730                         break;
1731                 case 3:
1732                         printf("Vendor dependent\n");
1733                         break;
1734                 default:
1735                         printf("unknown respose code %d\n", sbp_status->resp);
1736                 }
1737         }
1738
1739         /* we have to reset the fetch agent if it's dead */
1740         if (sbp_status->dead) {
1741                 if (sdev->path) {
1742                         xpt_freeze_devq(sdev->path, 1);
1743                         sdev->freeze++;
1744                 }
1745                 reset_agent = 1;
1746         }
1747
1748         if (ocb == NULL)
1749                 goto done;
1750
1751         switch (ntohl(ocb->orb[4]) & ORB_FMT_MSK) {
1752         case ORB_FMT_NOP:
1753                 break;
1754         case ORB_FMT_VED:
1755                 break;
1756         case ORB_FMT_STD:
1757                 switch (ocb->flags) {
1758                 case OCB_ACT_MGM:
1759                         orb_fun = ntohl(ocb->orb[4]) & ORB_FUN_MSK;
1760                         reset_agent = 0;
1761                         switch (orb_fun) {
1762                         case ORB_FUN_LGI:
1763                                 fwdma_sync(&sdev->dma, BUS_DMASYNC_POSTREAD);
1764                                 login_res = sdev->login;
1765                                 login_res->len = ntohs(login_res->len);
1766                                 login_res->id = ntohs(login_res->id);
1767                                 login_res->cmd_hi = ntohs(login_res->cmd_hi);
1768                                 login_res->cmd_lo = ntohl(login_res->cmd_lo);
1769                                 if (status_valid) {
1770 SBP_DEBUG(0)
1771                                         device_printf(sdev->target->sbp->fd.dev,
1772                                                 "%s:%s login: len %d, ID %d, cmd %08x%08x, recon_hold %d\n",
1773                                                 __func__, sdev->bustgtlun,
1774                                                 login_res->len, login_res->id,
1775                                                 login_res->cmd_hi, login_res->cmd_lo,
1776                                                 ntohs(login_res->recon_hold));
1777 END_DEBUG
1778                                         sbp_busy_timeout(sdev);
1779                                 } else {
1780                                         /* forgot logout? */
1781                                         device_printf(sdev->target->sbp->fd.dev,
1782                                                 "%s:%s login failed\n",
1783                                                 __func__, sdev->bustgtlun);
1784                                         sdev->status = SBP_DEV_RESET;
1785                                 }
1786                                 break;
1787                         case ORB_FUN_RCN:
1788                                 login_res = sdev->login;
1789                                 if (status_valid) {
1790 SBP_DEBUG(0)
1791                                         device_printf(sdev->target->sbp->fd.dev,
1792                                                 "%s:%s reconnect: len %d, ID %d, cmd %08x%08x\n",
1793                                                 __func__, sdev->bustgtlun,
1794                                                 login_res->len, login_res->id,
1795                                                 login_res->cmd_hi, login_res->cmd_lo);
1796 END_DEBUG
1797                                         if (sdev->status == SBP_DEV_ATTACHED)
1798                                                 sbp_scan_dev(sdev);
1799                                         else
1800                                                 sbp_agent_reset(sdev);
1801                                 } else {
1802                                         /* reconnection hold time exceed? */
1803 SBP_DEBUG(0)
1804                                         device_printf(sdev->target->sbp->fd.dev,
1805                                                 "%s:%s reconnect failed\n",
1806                                                 __func__, sdev->bustgtlun);
1807 END_DEBUG
1808                                         sbp_login(sdev);
1809                                 }
1810                                 break;
1811                         case ORB_FUN_LGO:
1812                                 sdev->status = SBP_DEV_RESET;
1813                                 break;
1814                         case ORB_FUN_RST:
1815                                 sbp_busy_timeout(sdev);
1816                                 break;
1817                         case ORB_FUN_LUR:
1818                         case ORB_FUN_ATA:
1819                         case ORB_FUN_ATS:
1820                                 sbp_agent_reset(sdev);
1821                                 break;
1822                         default:
1823                                 device_printf(sdev->target->sbp->fd.dev,
1824                                         "%s:%s unknown function %d\n",
1825                                         __func__, sdev->bustgtlun, orb_fun);
1826                                 break;
1827                         }
1828                         sbp_mgm_orb(sdev, ORB_FUN_RUNQUEUE, NULL);
1829                         break;
1830                 case OCB_ACT_CMD:
1831                         sdev->timeout = 0;
1832                         if (ocb->ccb != NULL) {
1833                                 union ccb *ccb;
1834
1835                                 ccb = ocb->ccb;
1836                                 if (sbp_status->len > 1) {
1837                                         sbp_scsi_status(sbp_status, ocb);
1838                                 } else {
1839                                         if (sbp_status->resp != ORB_RES_CMPL) {
1840                                                 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1841                                         } else {
1842                                                 ccb->ccb_h.status = CAM_REQ_CMP;
1843                                         }
1844                                 }
1845                                 /* fix up inq data */
1846                                 if (ccb->csio.cdb_io.cdb_bytes[0] == INQUIRY)
1847                                         sbp_fix_inq_data(ocb);
1848                                 xpt_done(ccb);
1849                         }
1850                         break;
1851                 default:
1852                         break;
1853                 }
1854         }
1855
1856         if (!use_doorbell)
1857                 sbp_free_ocb(sdev, ocb);
1858 done:
1859         if (reset_agent)
1860                 sbp_agent_reset(sdev);
1861
1862 done0:
1863         xfer->recv.pay_len = SBP_RECV_LEN;
1864 /* The received packet is usually small enough to be stored within
1865  * the buffer. In that case, the controller return ack_complete and
1866  * no respose is necessary.
1867  *
1868  * XXX fwohci.c and firewire.c should inform event_code such as
1869  * ack_complete or ack_pending to upper driver.
1870  */
1871 #if NEED_RESPONSE
1872         xfer->send.off = 0;
1873         sfp = (struct fw_pkt *)xfer->send.buf;
1874         sfp->mode.wres.dst = rfp->mode.wreqb.src;
1875         xfer->dst = sfp->mode.wres.dst;
1876         xfer->spd = min(sdev->target->fwdev->speed, max_speed);
1877         xfer->hand = sbp_loginres_callback;
1878
1879         sfp->mode.wres.tlrt = rfp->mode.wreqb.tlrt;
1880         sfp->mode.wres.tcode = FWTCODE_WRES;
1881         sfp->mode.wres.rtcode = 0;
1882         sfp->mode.wres.pri = 0;
1883
1884         fw_asyreq(xfer->fc, -1, xfer);
1885 #else
1886         /* recycle */
1887         STAILQ_INSERT_TAIL(&sbp->fwb.xferlist, xfer, link);
1888 #endif
1889 }
1890
1891 static void
1892 sbp_recv(struct fw_xfer *xfer)
1893 {
1894         struct sbp_softc *sbp;
1895
1896         sbp = (struct sbp_softc *)xfer->sc;
1897         SBP_LOCK(sbp);
1898         sbp_recv1(xfer);
1899         SBP_UNLOCK(sbp);
1900 }
1901 /*
1902  * sbp_attach()
1903  */
1904 static int
1905 sbp_attach(device_t dev)
1906 {
1907         struct sbp_softc *sbp;
1908         struct cam_devq *devq;
1909         struct firewire_comm *fc;
1910         int i, error;
1911
1912         if (DFLTPHYS > SBP_MAXPHYS)
1913                 device_printf(dev, "Warning, DFLTPHYS(%dKB) is larger than "
1914                         "SBP_MAXPHYS(%dKB).\n", DFLTPHYS / 1024,
1915                         SBP_MAXPHYS / 1024);
1916
1917         if (!firewire_phydma_enable)
1918                 device_printf(dev, "Warning, hw.firewire.phydma_enable must be 1 "
1919                         "for SBP over FireWire.\n");
1920 SBP_DEBUG(0)
1921         printf("sbp_attach (cold=%d)\n", cold);
1922 END_DEBUG
1923
1924         if (cold)
1925                 sbp_cold++;
1926         sbp = device_get_softc(dev);
1927         sbp->fd.dev = dev;
1928         sbp->fd.fc = fc = device_get_ivars(dev);
1929         mtx_init(&sbp->mtx, "sbp", NULL, MTX_DEF);
1930
1931         if (max_speed < 0)
1932                 max_speed = fc->speed;
1933
1934         error = bus_dma_tag_create(/*parent*/fc->dmat,
1935                                 /* XXX shoud be 4 for sane backend? */
1936                                 /*alignment*/1,
1937                                 /*boundary*/0,
1938                                 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
1939                                 /*highaddr*/BUS_SPACE_MAXADDR,
1940                                 /*filter*/NULL, /*filterarg*/NULL,
1941                                 /*maxsize*/0x100000, /*nsegments*/SBP_IND_MAX,
1942                                 /*maxsegsz*/SBP_SEG_MAX,
1943                                 /*flags*/BUS_DMA_ALLOCNOW,
1944                                 /*lockfunc*/busdma_lock_mutex,
1945                                 /*lockarg*/&sbp->mtx,
1946                                 &sbp->dmat);
1947         if (error != 0) {
1948                 printf("sbp_attach: Could not allocate DMA tag "
1949                         "- error %d\n", error);
1950                         return (ENOMEM);
1951         }
1952
1953         devq = cam_simq_alloc(/*maxopenings*/SBP_NUM_OCB);
1954         if (devq == NULL)
1955                 return (ENXIO);
1956
1957         for (i = 0; i < SBP_NUM_TARGETS; i++) {
1958                 sbp->targets[i].fwdev = NULL;
1959                 sbp->targets[i].luns = NULL;
1960                 sbp->targets[i].sbp = sbp;
1961         }
1962
1963         sbp->sim = cam_sim_alloc(sbp_action, sbp_poll, "sbp", sbp,
1964                                  device_get_unit(dev),
1965                                  &sbp->mtx,
1966                                  /*untagged*/ 1,
1967                                  /*tagged*/ SBP_QUEUE_LEN - 1,
1968                                  devq);
1969
1970         if (sbp->sim == NULL) {
1971                 cam_simq_free(devq);
1972                 return (ENXIO);
1973         }
1974
1975         SBP_LOCK(sbp);
1976         if (xpt_bus_register(sbp->sim, dev, /*bus*/0) != CAM_SUCCESS)
1977                 goto fail;
1978
1979         if (xpt_create_path(&sbp->path, NULL, cam_sim_path(sbp->sim),
1980             CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
1981                 xpt_bus_deregister(cam_sim_path(sbp->sim));
1982                 goto fail;
1983         }
1984         SBP_UNLOCK(sbp);
1985
1986         /* We reserve 16 bit space (4 bytes X 64 targets X 256 luns) */
1987         sbp->fwb.start = ((u_int64_t)SBP_BIND_HI << 32) | SBP_DEV2ADDR(0, 0);
1988         sbp->fwb.end = sbp->fwb.start + 0xffff;
1989         /* pre-allocate xfer */
1990         STAILQ_INIT(&sbp->fwb.xferlist);
1991         fw_xferlist_add(&sbp->fwb.xferlist, M_SBP,
1992             /*send*/ 0, /*recv*/ SBP_RECV_LEN, SBP_NUM_OCB/2,
1993             fc, (void *)sbp, sbp_recv);
1994
1995         fw_bindadd(fc, &sbp->fwb);
1996
1997         sbp->fd.post_busreset = sbp_post_busreset;
1998         sbp->fd.post_explore = sbp_post_explore;
1999
2000         if (fc->status != -1) {
2001                 sbp_post_busreset(sbp);
2002                 sbp_post_explore(sbp);
2003         }
2004         SBP_LOCK(sbp);
2005         xpt_async(AC_BUS_RESET, sbp->path, /*arg*/ NULL);
2006         SBP_UNLOCK(sbp);
2007
2008         return (0);
2009 fail:
2010         SBP_UNLOCK(sbp);
2011         cam_sim_free(sbp->sim, /*free_devq*/TRUE);
2012         return (ENXIO);
2013 }
2014
2015 static int
2016 sbp_logout_all(struct sbp_softc *sbp)
2017 {
2018         struct sbp_target *target;
2019         struct sbp_dev *sdev;
2020         int i, j;
2021
2022 SBP_DEBUG(0)
2023         printf("sbp_logout_all\n");
2024 END_DEBUG
2025         SBP_LOCK_ASSERT(sbp);
2026         for (i = 0; i < SBP_NUM_TARGETS; i++) {
2027                 target = &sbp->targets[i];
2028                 if (target->luns == NULL)
2029                         continue;
2030                 for (j = 0; j < target->num_lun; j++) {
2031                         sdev = target->luns[j];
2032                         if (sdev == NULL)
2033                                 continue;
2034                         callout_stop(&sdev->login_callout);
2035                         if (sdev->status >= SBP_DEV_TOATTACH &&
2036                                         sdev->status <= SBP_DEV_ATTACHED)
2037                                 sbp_mgm_orb(sdev, ORB_FUN_LGO, NULL);
2038                 }
2039         }
2040
2041         return 0;
2042 }
2043
2044 static int
2045 sbp_shutdown(device_t dev)
2046 {
2047         struct sbp_softc *sbp = ((struct sbp_softc *)device_get_softc(dev));
2048
2049         SBP_LOCK(sbp);
2050         sbp_logout_all(sbp);
2051         SBP_UNLOCK(sbp);
2052         return (0);
2053 }
2054
2055 static void
2056 sbp_free_sdev(struct sbp_dev *sdev)
2057 {
2058         struct sbp_softc *sbp;
2059         int i;
2060
2061         if (sdev == NULL)
2062                 return;
2063         sbp = sdev->target->sbp;
2064         SBP_UNLOCK(sbp);
2065         callout_drain(&sdev->login_callout);
2066         for (i = 0; i < SBP_QUEUE_LEN; i++) {
2067                 callout_drain(&sdev->ocb[i].timer);
2068                 bus_dmamap_destroy(sbp->dmat, sdev->ocb[i].dmamap);
2069         }
2070         fwdma_free(sbp->fd.fc, &sdev->dma);
2071         free(sdev, M_SBP);
2072         SBP_LOCK(sbp);
2073 }
2074
2075 static void
2076 sbp_free_target(struct sbp_target *target)
2077 {
2078         struct sbp_softc *sbp;
2079         struct fw_xfer *xfer, *next;
2080         int i;
2081
2082         if (target->luns == NULL)
2083                 return;
2084         sbp = target->sbp;
2085         SBP_LOCK_ASSERT(sbp);
2086         SBP_UNLOCK(sbp);
2087         callout_drain(&target->mgm_ocb_timeout);
2088         callout_drain(&target->scan_callout);
2089         SBP_LOCK(sbp);
2090         for (i = 0; i < target->num_lun; i++)
2091                 sbp_free_sdev(target->luns[i]);
2092
2093         STAILQ_FOREACH_SAFE(xfer, &target->xferlist, link, next) {
2094                 fw_xfer_free_buf(xfer);
2095         }
2096         STAILQ_INIT(&target->xferlist);
2097         free(target->luns, M_SBP);
2098         target->num_lun = 0;
2099         target->luns = NULL;
2100         target->fwdev = NULL;
2101 }
2102
2103 static int
2104 sbp_detach(device_t dev)
2105 {
2106         struct sbp_softc *sbp = ((struct sbp_softc *)device_get_softc(dev));
2107         struct firewire_comm *fc = sbp->fd.fc;
2108         int i;
2109
2110 SBP_DEBUG(0)
2111         printf("sbp_detach\n");
2112 END_DEBUG
2113
2114         SBP_LOCK(sbp);
2115         for (i = 0; i < SBP_NUM_TARGETS; i++)
2116                 sbp_cam_detach_target(&sbp->targets[i]);
2117
2118         xpt_async(AC_LOST_DEVICE, sbp->path, NULL);
2119         xpt_free_path(sbp->path);
2120         xpt_bus_deregister(cam_sim_path(sbp->sim));
2121         cam_sim_free(sbp->sim, /*free_devq*/ TRUE);
2122
2123         sbp_logout_all(sbp);
2124         SBP_UNLOCK(sbp);
2125
2126         /* XXX wait for logout completion */
2127         pause("sbpdtc", hz/2);
2128
2129         SBP_LOCK(sbp);
2130         for (i = 0; i < SBP_NUM_TARGETS; i++)
2131                 sbp_free_target(&sbp->targets[i]);
2132         SBP_UNLOCK(sbp);
2133
2134         fw_bindremove(fc, &sbp->fwb);
2135         fw_xferlist_remove(&sbp->fwb.xferlist);
2136
2137         bus_dma_tag_destroy(sbp->dmat);
2138         mtx_destroy(&sbp->mtx);
2139
2140         return (0);
2141 }
2142
2143 static void
2144 sbp_cam_detach_sdev(struct sbp_dev *sdev)
2145 {
2146         if (sdev == NULL)
2147                 return;
2148         if (sdev->status == SBP_DEV_DEAD)
2149                 return;
2150         if (sdev->status == SBP_DEV_RESET)
2151                 return;
2152         SBP_LOCK_ASSERT(sdev->target->sbp);
2153         sbp_abort_all_ocbs(sdev, CAM_DEV_NOT_THERE);
2154         if (sdev->path) {
2155                 xpt_release_devq(sdev->path,
2156                                  sdev->freeze, TRUE);
2157                 sdev->freeze = 0;
2158                 xpt_async(AC_LOST_DEVICE, sdev->path, NULL);
2159                 xpt_free_path(sdev->path);
2160                 sdev->path = NULL;
2161         }
2162 }
2163
2164 static void
2165 sbp_cam_detach_target(struct sbp_target *target)
2166 {
2167         int i;
2168
2169         SBP_LOCK_ASSERT(target->sbp);
2170         if (target->luns != NULL) {
2171 SBP_DEBUG(0)
2172                 printf("sbp_detach_target %d\n", target->target_id);
2173 END_DEBUG
2174                 callout_stop(&target->scan_callout);
2175                 for (i = 0; i < target->num_lun; i++)
2176                         sbp_cam_detach_sdev(target->luns[i]);
2177         }
2178 }
2179
2180 static void
2181 sbp_target_reset(struct sbp_dev *sdev, int method)
2182 {
2183         int i;
2184         struct sbp_target *target = sdev->target;
2185         struct sbp_dev *tsdev;
2186
2187         SBP_LOCK_ASSERT(target->sbp);
2188         for (i = 0; i < target->num_lun; i++) {
2189                 tsdev = target->luns[i];
2190                 if (tsdev == NULL)
2191                         continue;
2192                 if (tsdev->status == SBP_DEV_DEAD)
2193                         continue;
2194                 if (tsdev->status == SBP_DEV_RESET)
2195                         continue;
2196                 xpt_freeze_devq(tsdev->path, 1);
2197                 tsdev->freeze++;
2198                 sbp_abort_all_ocbs(tsdev, CAM_CMD_TIMEOUT);
2199                 if (method == 2)
2200                         tsdev->status = SBP_DEV_LOGIN;
2201         }
2202         switch (method) {
2203         case 1:
2204                 printf("target reset\n");
2205                 sbp_mgm_orb(sdev, ORB_FUN_RST, NULL);
2206                 break;
2207         case 2:
2208                 printf("reset start\n");
2209                 sbp_reset_start(sdev);
2210                 break;
2211         }
2212
2213 }
2214
2215 static void
2216 sbp_mgm_timeout(void *arg)
2217 {
2218         struct sbp_ocb *ocb = (struct sbp_ocb *)arg;
2219         struct sbp_dev *sdev = ocb->sdev;
2220         struct sbp_target *target = sdev->target;
2221
2222         SBP_LOCK_ASSERT(target->sbp);
2223         device_printf(sdev->target->sbp->fd.dev,
2224                 "%s:%s request timeout(mgm orb:0x%08x)\n",
2225                 __func__, sdev->bustgtlun, (uint32_t)ocb->bus_addr);
2226         target->mgm_ocb_cur = NULL;
2227         sbp_free_ocb(sdev, ocb);
2228 #if 0
2229         /* XXX */
2230         printf("run next request\n");
2231         sbp_mgm_orb(sdev, ORB_FUN_RUNQUEUE, NULL);
2232 #endif
2233         device_printf(sdev->target->sbp->fd.dev,
2234                 "%s:%s reset start\n",
2235                 __func__, sdev->bustgtlun);
2236         sbp_reset_start(sdev);
2237 }
2238
2239 static void
2240 sbp_timeout(void *arg)
2241 {
2242         struct sbp_ocb *ocb = (struct sbp_ocb *)arg;
2243         struct sbp_dev *sdev = ocb->sdev;
2244
2245         device_printf(sdev->target->sbp->fd.dev,
2246                 "%s:%s request timeout(cmd orb:0x%08x) ... ",
2247                 __func__, sdev->bustgtlun, (uint32_t)ocb->bus_addr);
2248
2249         SBP_LOCK_ASSERT(sdev->target->sbp);
2250         sdev->timeout++;
2251         switch (sdev->timeout) {
2252         case 1:
2253                 printf("agent reset\n");
2254                 xpt_freeze_devq(sdev->path, 1);
2255                 sdev->freeze++;
2256                 sbp_abort_all_ocbs(sdev, CAM_CMD_TIMEOUT);
2257                 sbp_agent_reset(sdev);
2258                 break;
2259         case 2:
2260         case 3:
2261                 sbp_target_reset(sdev, sdev->timeout - 1);
2262                 break;
2263 #if 0
2264         default:
2265                 /* XXX give up */
2266                 sbp_cam_detach_target(target);
2267                 if (target->luns != NULL)
2268                         free(target->luns, M_SBP);
2269                 target->num_lun = 0;
2270                 target->luns = NULL;
2271                 target->fwdev = NULL;
2272 #endif
2273         }
2274 }
2275
2276 static void
2277 sbp_action(struct cam_sim *sim, union ccb *ccb)
2278 {
2279
2280         struct sbp_softc *sbp = (struct sbp_softc *)sim->softc;
2281         struct sbp_target *target = NULL;
2282         struct sbp_dev *sdev = NULL;
2283
2284         if (sbp != NULL)
2285                 SBP_LOCK_ASSERT(sbp);
2286         /* target:lun -> sdev mapping */
2287         if (sbp != NULL
2288                         && ccb->ccb_h.target_id != CAM_TARGET_WILDCARD
2289                         && ccb->ccb_h.target_id < SBP_NUM_TARGETS) {
2290                 target = &sbp->targets[ccb->ccb_h.target_id];
2291                 if (target->fwdev != NULL
2292                                 && ccb->ccb_h.target_lun != CAM_LUN_WILDCARD
2293                                 && ccb->ccb_h.target_lun < target->num_lun) {
2294                         sdev = target->luns[ccb->ccb_h.target_lun];
2295                         if (sdev != NULL && sdev->status != SBP_DEV_ATTACHED &&
2296                                 sdev->status != SBP_DEV_PROBE)
2297                                 sdev = NULL;
2298                 }
2299         }
2300
2301 SBP_DEBUG(1)
2302         if (sdev == NULL)
2303                 printf("invalid target %d lun %jx\n",
2304                         ccb->ccb_h.target_id, (uintmax_t)ccb->ccb_h.target_lun);
2305 END_DEBUG
2306
2307         switch (ccb->ccb_h.func_code) {
2308         case XPT_SCSI_IO:
2309         case XPT_RESET_DEV:
2310         case XPT_GET_TRAN_SETTINGS:
2311         case XPT_SET_TRAN_SETTINGS:
2312         case XPT_CALC_GEOMETRY:
2313                 if (sdev == NULL) {
2314 SBP_DEBUG(1)
2315                         printf("%s:%d:%jx:func_code 0x%04x: "
2316                                 "Invalid target (target needed)\n",
2317                                 device_get_nameunit(sbp->fd.dev),
2318                                 ccb->ccb_h.target_id,
2319                                 (uintmax_t)ccb->ccb_h.target_lun,
2320                                 ccb->ccb_h.func_code);
2321 END_DEBUG
2322
2323                         ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2324                         xpt_done(ccb);
2325                         return;
2326                 }
2327                 break;
2328         case XPT_PATH_INQ:
2329         case XPT_NOOP:
2330                 /* The opcodes sometimes aimed at a target (sc is valid),
2331                  * sometimes aimed at the SIM (sc is invalid and target is
2332                  * CAM_TARGET_WILDCARD)
2333                  */
2334                 if (sbp == NULL &&
2335                         ccb->ccb_h.target_id != CAM_TARGET_WILDCARD) {
2336 SBP_DEBUG(0)
2337                         printf("%s:%d:%jx func_code 0x%04x: "
2338                                 "Invalid target (no wildcard)\n",
2339                                 device_get_nameunit(sbp->fd.dev),
2340                                 ccb->ccb_h.target_id,
2341                                 (uintmax_t)ccb->ccb_h.target_lun,
2342                                 ccb->ccb_h.func_code);
2343 END_DEBUG
2344                         ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2345                         xpt_done(ccb);
2346                         return;
2347                 }
2348                 break;
2349         default:
2350                 /* XXX Hm, we should check the input parameters */
2351                 break;
2352         }
2353
2354         switch (ccb->ccb_h.func_code) {
2355         case XPT_SCSI_IO:
2356         {
2357                 struct ccb_scsiio *csio;
2358                 struct sbp_ocb *ocb;
2359                 int speed;
2360                 void *cdb;
2361
2362                 csio = &ccb->csio;
2363                 mtx_assert(sim->mtx, MA_OWNED);
2364
2365 SBP_DEBUG(2)
2366                 printf("%s:%d:%jx XPT_SCSI_IO: "
2367                         "cmd: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x"
2368                         ", flags: 0x%02x, "
2369                         "%db cmd/%db data/%db sense\n",
2370                         device_get_nameunit(sbp->fd.dev),
2371                         ccb->ccb_h.target_id, (uintmax_t)ccb->ccb_h.target_lun,
2372                         csio->cdb_io.cdb_bytes[0],
2373                         csio->cdb_io.cdb_bytes[1],
2374                         csio->cdb_io.cdb_bytes[2],
2375                         csio->cdb_io.cdb_bytes[3],
2376                         csio->cdb_io.cdb_bytes[4],
2377                         csio->cdb_io.cdb_bytes[5],
2378                         csio->cdb_io.cdb_bytes[6],
2379                         csio->cdb_io.cdb_bytes[7],
2380                         csio->cdb_io.cdb_bytes[8],
2381                         csio->cdb_io.cdb_bytes[9],
2382                         ccb->ccb_h.flags & CAM_DIR_MASK,
2383                         csio->cdb_len, csio->dxfer_len,
2384                         csio->sense_len);
2385 END_DEBUG
2386                 if (sdev == NULL) {
2387                         ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2388                         xpt_done(ccb);
2389                         return;
2390                 }
2391                 if (csio->cdb_len > sizeof(ocb->orb) - 5 * sizeof(uint32_t)) {
2392                         ccb->ccb_h.status = CAM_REQ_INVALID;
2393                         xpt_done(ccb);
2394                         return;
2395                 }
2396 #if 0
2397                 /* if we are in probe stage, pass only probe commands */
2398                 if (sdev->status == SBP_DEV_PROBE) {
2399                         char *name;
2400                         name = xpt_path_periph(ccb->ccb_h.path)->periph_name;
2401                         printf("probe stage, periph name: %s\n", name);
2402                         if (strcmp(name, "probe") != 0) {
2403                                 ccb->ccb_h.status = CAM_REQUEUE_REQ;
2404                                 xpt_done(ccb);
2405                                 return;
2406                         }
2407                 }
2408 #endif
2409                 if ((ocb = sbp_get_ocb(sdev)) == NULL) {
2410                         ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
2411                         if (sdev->freeze == 0) {
2412                                 xpt_freeze_devq(sdev->path, 1);
2413                                 sdev->freeze++;
2414                         }
2415                         xpt_done(ccb);
2416                         return;
2417                 }
2418
2419                 ocb->flags = OCB_ACT_CMD;
2420                 ocb->sdev = sdev;
2421                 ocb->ccb = ccb;
2422                 ccb->ccb_h.ccb_sdev_ptr = sdev;
2423                 ocb->orb[0] = htonl(1U << 31);
2424                 ocb->orb[1] = 0;
2425                 ocb->orb[2] = htonl(((sbp->fd.fc->nodeid | FWLOCALBUS) << 16));
2426                 ocb->orb[3] = htonl(ocb->bus_addr + IND_PTR_OFFSET);
2427                 speed = min(target->fwdev->speed, max_speed);
2428                 ocb->orb[4] = htonl(ORB_NOTIFY | ORB_CMD_SPD(speed)
2429                                                 | ORB_CMD_MAXP(speed + 7));
2430                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
2431                         ocb->orb[4] |= htonl(ORB_CMD_IN);
2432                 }
2433
2434                 if (csio->ccb_h.flags & CAM_CDB_POINTER)
2435                         cdb = (void *)csio->cdb_io.cdb_ptr;
2436                 else
2437                         cdb = (void *)&csio->cdb_io.cdb_bytes;
2438                 bcopy(cdb, (void *)&ocb->orb[5], csio->cdb_len);
2439 /*
2440 printf("ORB %08x %08x %08x %08x\n", ntohl(ocb->orb[0]), ntohl(ocb->orb[1]), ntohl(ocb->orb[2]), ntohl(ocb->orb[3]));
2441 printf("ORB %08x %08x %08x %08x\n", ntohl(ocb->orb[4]), ntohl(ocb->orb[5]), ntohl(ocb->orb[6]), ntohl(ocb->orb[7]));
2442 */
2443                 if (ccb->csio.dxfer_len > 0) {
2444                         int error;
2445
2446                         error = bus_dmamap_load_ccb(/*dma tag*/sbp->dmat,
2447                                         /*dma map*/ocb->dmamap,
2448                                         ccb,
2449                                         sbp_execute_ocb,
2450                                         ocb,
2451                                         /*flags*/0);
2452                         if (error)
2453                                 printf("sbp: bus_dmamap_load error %d\n", error);
2454                 } else
2455                         sbp_execute_ocb(ocb, NULL, 0, 0);
2456                 break;
2457         }
2458         case XPT_CALC_GEOMETRY:
2459         {
2460                 struct ccb_calc_geometry *ccg;
2461
2462                 ccg = &ccb->ccg;
2463                 if (ccg->block_size == 0) {
2464                         printf("sbp_action: block_size is 0.\n");
2465                         ccb->ccb_h.status = CAM_REQ_INVALID;
2466                         xpt_done(ccb);
2467                         break;
2468                 }
2469 SBP_DEBUG(1)
2470                 printf("%s:%d:%d:%jx:XPT_CALC_GEOMETRY: "
2471                         "Volume size = %jd\n",
2472                         device_get_nameunit(sbp->fd.dev),
2473                         cam_sim_path(sbp->sim),
2474                         ccb->ccb_h.target_id, (uintmax_t)ccb->ccb_h.target_lun,
2475                         (uintmax_t)ccg->volume_size);
2476 END_DEBUG
2477
2478                 cam_calc_geometry(ccg, /*extended*/1);
2479                 xpt_done(ccb);
2480                 break;
2481         }
2482         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
2483         {
2484
2485 SBP_DEBUG(1)
2486                 printf("%s:%d:XPT_RESET_BUS: \n",
2487                         device_get_nameunit(sbp->fd.dev), cam_sim_path(sbp->sim));
2488 END_DEBUG
2489
2490                 ccb->ccb_h.status = CAM_REQ_INVALID;
2491                 xpt_done(ccb);
2492                 break;
2493         }
2494         case XPT_PATH_INQ:              /* Path routing inquiry */
2495         {
2496                 struct ccb_pathinq *cpi = &ccb->cpi;
2497
2498 SBP_DEBUG(1)
2499                 printf("%s:%d:%jx XPT_PATH_INQ:.\n",
2500                         device_get_nameunit(sbp->fd.dev),
2501                         ccb->ccb_h.target_id, (uintmax_t)ccb->ccb_h.target_lun);
2502 END_DEBUG
2503                 cpi->version_num = 1; /* XXX??? */
2504                 cpi->hba_inquiry = PI_TAG_ABLE;
2505                 cpi->target_sprt = 0;
2506                 cpi->hba_misc = PIM_NOBUSRESET | PIM_NO_6_BYTE;
2507                 cpi->hba_eng_cnt = 0;
2508                 cpi->max_target = SBP_NUM_TARGETS - 1;
2509                 cpi->max_lun = SBP_NUM_LUNS - 1;
2510                 cpi->initiator_id = SBP_INITIATOR;
2511                 cpi->bus_id = sim->bus_id;
2512                 cpi->base_transfer_speed = 400 * 1000 / 8;
2513                 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2514                 strlcpy(cpi->hba_vid, "SBP", HBA_IDLEN);
2515                 strlcpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
2516                 cpi->unit_number = sim->unit_number;
2517                 cpi->transport = XPORT_SPI;     /* XX should have a FireWire */
2518                 cpi->transport_version = 2;
2519                 cpi->protocol = PROTO_SCSI;
2520                 cpi->protocol_version = SCSI_REV_2;
2521
2522                 cpi->ccb_h.status = CAM_REQ_CMP;
2523                 xpt_done(ccb);
2524                 break;
2525         }
2526         case XPT_GET_TRAN_SETTINGS:
2527         {
2528                 struct ccb_trans_settings *cts = &ccb->cts;
2529                 struct ccb_trans_settings_scsi *scsi =
2530                     &cts->proto_specific.scsi;
2531                 struct ccb_trans_settings_spi *spi =
2532                     &cts->xport_specific.spi;
2533
2534                 cts->protocol = PROTO_SCSI;
2535                 cts->protocol_version = SCSI_REV_2;
2536                 cts->transport = XPORT_SPI;     /* should have a FireWire */
2537                 cts->transport_version = 2;
2538                 spi->valid = CTS_SPI_VALID_DISC;
2539                 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
2540                 scsi->valid = CTS_SCSI_VALID_TQ;
2541                 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
2542 SBP_DEBUG(1)
2543                 printf("%s:%d:%jx XPT_GET_TRAN_SETTINGS:.\n",
2544                         device_get_nameunit(sbp->fd.dev),
2545                         ccb->ccb_h.target_id, (uintmax_t)ccb->ccb_h.target_lun);
2546 END_DEBUG
2547                 cts->ccb_h.status = CAM_REQ_CMP;
2548                 xpt_done(ccb);
2549                 break;
2550         }
2551         case XPT_ABORT:
2552                 ccb->ccb_h.status = CAM_UA_ABORT;
2553                 xpt_done(ccb);
2554                 break;
2555         case XPT_SET_TRAN_SETTINGS:
2556                 /* XXX */
2557         default:
2558                 ccb->ccb_h.status = CAM_REQ_INVALID;
2559                 xpt_done(ccb);
2560                 break;
2561         }
2562         return;
2563 }
2564
2565 static void
2566 sbp_execute_ocb(void *arg, bus_dma_segment_t *segments, int seg, int error)
2567 {
2568         int i;
2569         struct sbp_ocb *ocb;
2570         struct sbp_ocb *prev;
2571         bus_dma_segment_t *s;
2572
2573         if (error)
2574                 printf("sbp_execute_ocb: error=%d\n", error);
2575
2576         ocb = (struct sbp_ocb *)arg;
2577
2578 SBP_DEBUG(2)
2579         printf("sbp_execute_ocb: seg %d", seg);
2580         for (i = 0; i < seg; i++)
2581                 printf(", %jx:%jd", (uintmax_t)segments[i].ds_addr,
2582                                         (uintmax_t)segments[i].ds_len);
2583         printf("\n");
2584 END_DEBUG
2585
2586         if (seg == 1) {
2587                 /* direct pointer */
2588                 s = &segments[0];
2589                 if (s->ds_len > SBP_SEG_MAX)
2590                         panic("ds_len > SBP_SEG_MAX, fix busdma code");
2591                 ocb->orb[3] = htonl(s->ds_addr);
2592                 ocb->orb[4] |= htonl(s->ds_len);
2593         } else if (seg > 1) {
2594                 /* page table */
2595                 for (i = 0; i < seg; i++) {
2596                         s = &segments[i];
2597 SBP_DEBUG(0)
2598                         /* XXX LSI Logic "< 16 byte" bug might be hit */
2599                         if (s->ds_len < 16)
2600                                 printf("sbp_execute_ocb: warning, "
2601                                         "segment length(%zd) is less than 16."
2602                                         "(seg=%d/%d)\n", (size_t)s->ds_len, i + 1, seg);
2603 END_DEBUG
2604                         if (s->ds_len > SBP_SEG_MAX)
2605                                 panic("ds_len > SBP_SEG_MAX, fix busdma code");
2606                         ocb->ind_ptr[i].hi = htonl(s->ds_len << 16);
2607                         ocb->ind_ptr[i].lo = htonl(s->ds_addr);
2608                 }
2609                 ocb->orb[4] |= htonl(ORB_CMD_PTBL | seg);
2610         }
2611
2612         if (seg > 0)
2613                 bus_dmamap_sync(ocb->sdev->target->sbp->dmat, ocb->dmamap,
2614                         (ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
2615                         BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
2616         prev = sbp_enqueue_ocb(ocb->sdev, ocb);
2617         fwdma_sync(&ocb->sdev->dma, BUS_DMASYNC_PREWRITE);
2618         if (use_doorbell) {
2619                 if (prev == NULL) {
2620                         if (ocb->sdev->last_ocb != NULL)
2621                                 sbp_doorbell(ocb->sdev);
2622                         else
2623                                 sbp_orb_pointer(ocb->sdev, ocb);
2624                 }
2625         } else {
2626                 if (prev == NULL || (ocb->sdev->flags & ORB_LINK_DEAD) != 0) {
2627                         ocb->sdev->flags &= ~ORB_LINK_DEAD;
2628                         sbp_orb_pointer(ocb->sdev, ocb);
2629                 }
2630         }
2631 }
2632
2633 static void
2634 sbp_poll(struct cam_sim *sim)
2635 {
2636         struct sbp_softc *sbp;
2637         struct firewire_comm *fc;
2638
2639         sbp = (struct sbp_softc *)sim->softc;
2640         fc = sbp->fd.fc;
2641
2642         fc->poll(fc, 0, -1);
2643
2644         return;
2645 }
2646
2647 static struct sbp_ocb *
2648 sbp_dequeue_ocb(struct sbp_dev *sdev, struct sbp_status *sbp_status)
2649 {
2650         struct sbp_ocb *ocb;
2651         struct sbp_ocb *next;
2652         int order = 0;
2653
2654 SBP_DEBUG(1)
2655         device_printf(sdev->target->sbp->fd.dev,
2656         "%s:%s 0x%08x src %d\n",
2657             __func__, sdev->bustgtlun, ntohl(sbp_status->orb_lo), sbp_status->src);
2658 END_DEBUG
2659         SBP_LOCK_ASSERT(sdev->target->sbp);
2660         STAILQ_FOREACH_SAFE(ocb, &sdev->ocbs, ocb, next) {
2661                 if (OCB_MATCH(ocb, sbp_status)) {
2662                         /* found */
2663                         STAILQ_REMOVE(&sdev->ocbs, ocb, sbp_ocb, ocb);
2664                         if (ocb->ccb != NULL)
2665                                 callout_stop(&ocb->timer);
2666                         if (ntohl(ocb->orb[4]) & 0xffff) {
2667                                 bus_dmamap_sync(sdev->target->sbp->dmat,
2668                                         ocb->dmamap,
2669                                         (ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
2670                                         BUS_DMASYNC_POSTREAD :
2671                                         BUS_DMASYNC_POSTWRITE);
2672                                 bus_dmamap_unload(sdev->target->sbp->dmat,
2673                                         ocb->dmamap);
2674                         }
2675                         if (!use_doorbell) {
2676                                 if (sbp_status->src == SRC_NO_NEXT) {
2677                                         if (next != NULL)
2678                                                 sbp_orb_pointer(sdev, next);
2679                                         else if (order > 0) {
2680                                                 /*
2681                                                  * Unordered execution
2682                                                  * We need to send pointer for
2683                                                  * next ORB
2684                                                  */
2685                                                 sdev->flags |= ORB_LINK_DEAD;
2686                                         }
2687                                 }
2688                         } else {
2689                                 /*
2690                                  * XXX this is not correct for unordered
2691                                  * execution.
2692                                  */
2693                                 if (sdev->last_ocb != NULL) {
2694                                         sbp_free_ocb(sdev, sdev->last_ocb);
2695                                 }
2696                                 sdev->last_ocb = ocb;
2697                                 if (next != NULL &&
2698                                     sbp_status->src == SRC_NO_NEXT)
2699                                         sbp_doorbell(sdev);
2700                         }
2701                         break;
2702                 } else
2703                         order++;
2704         }
2705 SBP_DEBUG(0)
2706         if (ocb && order > 0) {
2707                 device_printf(sdev->target->sbp->fd.dev,
2708                         "%s:%s unordered execution order:%d\n",
2709                         __func__, sdev->bustgtlun, order);
2710         }
2711 END_DEBUG
2712         return (ocb);
2713 }
2714
2715 static struct sbp_ocb *
2716 sbp_enqueue_ocb(struct sbp_dev *sdev, struct sbp_ocb *ocb)
2717 {
2718         struct sbp_ocb *prev, *prev2;
2719
2720         SBP_LOCK_ASSERT(sdev->target->sbp);
2721 SBP_DEBUG(1)
2722         device_printf(sdev->target->sbp->fd.dev,
2723         "%s:%s 0x%08jx\n", __func__, sdev->bustgtlun, (uintmax_t)ocb->bus_addr);
2724 END_DEBUG
2725         prev2 = prev = STAILQ_LAST(&sdev->ocbs, sbp_ocb, ocb);
2726         STAILQ_INSERT_TAIL(&sdev->ocbs, ocb, ocb);
2727
2728         if (ocb->ccb != NULL) {
2729                 callout_reset_sbt(&ocb->timer,
2730                     SBT_1MS * ocb->ccb->ccb_h.timeout, 0, sbp_timeout,
2731                     ocb, 0);
2732         }
2733
2734         if (use_doorbell && prev == NULL)
2735                 prev2 = sdev->last_ocb;
2736
2737         if (prev2 != NULL && (ocb->sdev->flags & ORB_LINK_DEAD) == 0) {
2738 SBP_DEBUG(1)
2739                 printf("linking chain 0x%jx -> 0x%jx\n",
2740                     (uintmax_t)prev2->bus_addr, (uintmax_t)ocb->bus_addr);
2741 END_DEBUG
2742                 /*
2743                  * Suppress compiler optimization so that orb[1] must be written first.
2744                  * XXX We may need an explicit memory barrier for other architectures
2745                  * other than i386/amd64.
2746                  */
2747                 *(volatile uint32_t *)&prev2->orb[1] = htonl(ocb->bus_addr);
2748                 *(volatile uint32_t *)&prev2->orb[0] = 0;
2749         }
2750
2751         return prev;
2752 }
2753
2754 static struct sbp_ocb *
2755 sbp_get_ocb(struct sbp_dev *sdev)
2756 {
2757         struct sbp_ocb *ocb;
2758
2759         SBP_LOCK_ASSERT(sdev->target->sbp);
2760         ocb = STAILQ_FIRST(&sdev->free_ocbs);
2761         if (ocb == NULL) {
2762                 sdev->flags |= ORB_SHORTAGE;
2763                 printf("ocb shortage!!!\n");
2764                 return NULL;
2765         }
2766         STAILQ_REMOVE_HEAD(&sdev->free_ocbs, ocb);
2767         ocb->ccb = NULL;
2768         return (ocb);
2769 }
2770
2771 static void
2772 sbp_free_ocb(struct sbp_dev *sdev, struct sbp_ocb *ocb)
2773 {
2774         ocb->flags = 0;
2775         ocb->ccb = NULL;
2776
2777         SBP_LOCK_ASSERT(sdev->target->sbp);
2778         STAILQ_INSERT_TAIL(&sdev->free_ocbs, ocb, ocb);
2779         if ((sdev->flags & ORB_SHORTAGE) != 0) {
2780                 int count;
2781
2782                 sdev->flags &= ~ORB_SHORTAGE;
2783                 count = sdev->freeze;
2784                 sdev->freeze = 0;
2785                 xpt_release_devq(sdev->path, count, TRUE);
2786         }
2787 }
2788
2789 static void
2790 sbp_abort_ocb(struct sbp_ocb *ocb, int status)
2791 {
2792         struct sbp_dev *sdev;
2793
2794         sdev = ocb->sdev;
2795         SBP_LOCK_ASSERT(sdev->target->sbp);
2796 SBP_DEBUG(0)
2797         device_printf(sdev->target->sbp->fd.dev,
2798         "%s:%s 0x%jx\n", __func__, sdev->bustgtlun, (uintmax_t)ocb->bus_addr);
2799 END_DEBUG
2800 SBP_DEBUG(1)
2801         if (ocb->ccb != NULL)
2802                 sbp_print_scsi_cmd(ocb);
2803 END_DEBUG
2804         if (ntohl(ocb->orb[4]) & 0xffff) {
2805                 bus_dmamap_sync(sdev->target->sbp->dmat, ocb->dmamap,
2806                         (ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
2807                         BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
2808                 bus_dmamap_unload(sdev->target->sbp->dmat, ocb->dmamap);
2809         }
2810         if (ocb->ccb != NULL) {
2811                 callout_stop(&ocb->timer);
2812                 ocb->ccb->ccb_h.status = status;
2813                 xpt_done(ocb->ccb);
2814         }
2815         sbp_free_ocb(sdev, ocb);
2816 }
2817
2818 static void
2819 sbp_abort_all_ocbs(struct sbp_dev *sdev, int status)
2820 {
2821         struct sbp_ocb *ocb, *next;
2822         STAILQ_HEAD(, sbp_ocb) temp;
2823
2824         STAILQ_INIT(&temp);
2825         SBP_LOCK_ASSERT(sdev->target->sbp);
2826         STAILQ_CONCAT(&temp, &sdev->ocbs);
2827         STAILQ_INIT(&sdev->ocbs);
2828
2829         STAILQ_FOREACH_SAFE(ocb, &temp, ocb, next) {
2830                 sbp_abort_ocb(ocb, status);
2831         }
2832         if (sdev->last_ocb != NULL) {
2833                 sbp_free_ocb(sdev, sdev->last_ocb);
2834                 sdev->last_ocb = NULL;
2835         }
2836 }
2837
2838 static devclass_t sbp_devclass;
2839
2840 static device_method_t sbp_methods[] = {
2841         /* device interface */
2842         DEVMETHOD(device_identify,      sbp_identify),
2843         DEVMETHOD(device_probe,         sbp_probe),
2844         DEVMETHOD(device_attach,        sbp_attach),
2845         DEVMETHOD(device_detach,        sbp_detach),
2846         DEVMETHOD(device_shutdown,      sbp_shutdown),
2847
2848         { 0, 0 }
2849 };
2850
2851 static driver_t sbp_driver = {
2852         "sbp",
2853         sbp_methods,
2854         sizeof(struct sbp_softc),
2855 };
2856 DRIVER_MODULE(sbp, firewire, sbp_driver, sbp_devclass, 0, 0);
2857 MODULE_VERSION(sbp, 1);
2858 MODULE_DEPEND(sbp, firewire, 1, 1, 1);
2859 MODULE_DEPEND(sbp, cam, 1, 1, 1);