1 /*- 2 * Copyright (c) 2008, 2009 Silicon Graphics International Corp. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions, and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * substantially similar to the "NO WARRANTY" disclaimer below 13 * ("Disclaimer") and any redistribution must be conditioned upon 14 * including a substantially similar Disclaimer requirement for further 15 * binary redistribution. 16 * 17 * NO WARRANTY 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGES. 29 * 30 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/scsi_ctl.c#4 $ 31 */ 32 /* 33 * Peripheral driver interface between CAM and CTL (CAM Target Layer). 34 * 35 * Author: Ken Merry <ken@FreeBSD.org> 36 */ 37 38 #include <sys/cdefs.h> 39 __FBSDID("$FreeBSD$"); 40 41 #include <sys/param.h> 42 #include <sys/queue.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/lock.h> 46 #include <sys/mutex.h> 47 #include <sys/condvar.h> 48 #include <sys/malloc.h> 49 #include <sys/bus.h> 50 #include <sys/endian.h> 51 #include <sys/sbuf.h> 52 #include <sys/sysctl.h> 53 #include <sys/types.h> 54 #include <sys/systm.h> 55 #include <machine/bus.h> 56 57 #include <cam/cam.h> 58 #include <cam/cam_ccb.h> 59 #include <cam/cam_periph.h> 60 #include <cam/cam_queue.h> 61 #include <cam/cam_xpt_periph.h> 62 #include <cam/cam_debug.h> 63 #include <cam/cam_sim.h> 64 #include <cam/cam_xpt.h> 65 66 #include <cam/scsi/scsi_all.h> 67 #include <cam/scsi/scsi_message.h> 68 69 #include <cam/ctl/ctl_io.h> 70 #include <cam/ctl/ctl.h> 71 #include <cam/ctl/ctl_frontend.h> 72 #include <cam/ctl/ctl_util.h> 73 #include <cam/ctl/ctl_error.h> 74 75 struct ctlfe_softc { 76 struct ctl_port port; 77 path_id_t path_id; 78 u_int maxio; 79 struct cam_sim *sim; 80 char port_name[DEV_IDLEN]; 81 struct mtx lun_softc_mtx; 82 STAILQ_HEAD(, ctlfe_lun_softc) lun_softc_list; 83 STAILQ_ENTRY(ctlfe_softc) links; 84 }; 85 86 STAILQ_HEAD(, ctlfe_softc) ctlfe_softc_list; 87 struct mtx ctlfe_list_mtx; 88 static char ctlfe_mtx_desc[] = "ctlfelist"; 89 #ifdef CTLFE_INIT_ENABLE 90 static int ctlfe_max_targets = 1; 91 static int ctlfe_num_targets = 0; 92 #endif 93 94 typedef enum { 95 CTLFE_LUN_NONE = 0x00, 96 CTLFE_LUN_WILDCARD = 0x01 97 } ctlfe_lun_flags; 98 99 struct ctlfe_lun_softc { 100 struct ctlfe_softc *parent_softc; 101 struct cam_periph *periph; 102 ctlfe_lun_flags flags; 103 uint64_t ccbs_alloced; 104 uint64_t ccbs_freed; 105 uint64_t ctios_sent; 106 uint64_t ctios_returned; 107 uint64_t atios_sent; 108 uint64_t atios_returned; 109 uint64_t inots_sent; 110 uint64_t inots_returned; 111 /* bus_dma_tag_t dma_tag; */ 112 TAILQ_HEAD(, ccb_hdr) work_queue; 113 STAILQ_ENTRY(ctlfe_lun_softc) links; 114 }; 115 116 typedef enum { 117 CTLFE_CMD_NONE = 0x00, 118 CTLFE_CMD_PIECEWISE = 0x01 119 } ctlfe_cmd_flags; 120 121 /* 122 * The size limit of this structure is CTL_PORT_PRIV_SIZE, from ctl_io.h. 123 * Currently that is 600 bytes. 124 */ 125 struct ctlfe_lun_cmd_info { 126 int cur_transfer_index; 127 size_t cur_transfer_off; 128 ctlfe_cmd_flags flags; 129 /* 130 * XXX KDM struct bus_dma_segment is 8 bytes on i386, and 16 131 * bytes on amd64. So with 32 elements, this is 256 bytes on 132 * i386 and 512 bytes on amd64. 133 */ 134 #define CTLFE_MAX_SEGS 32 135 bus_dma_segment_t cam_sglist[CTLFE_MAX_SEGS]; 136 }; 137 CTASSERT(sizeof(struct ctlfe_lun_cmd_info) <= CTL_PORT_PRIV_SIZE); 138 139 /* 140 * When we register the adapter/bus, request that this many ctl_ios be 141 * allocated. This should be the maximum supported by the adapter, but we 142 * currently don't have a way to get that back from the path inquiry. 143 * XXX KDM add that to the path inquiry. 144 */ 145 #define CTLFE_REQ_CTL_IO 4096 146 /* 147 * Number of Accept Target I/O CCBs to allocate and queue down to the 148 * adapter per LUN. 149 * XXX KDM should this be controlled by CTL? 150 */ 151 #define CTLFE_ATIO_PER_LUN 1024 152 /* 153 * Number of Immediate Notify CCBs (used for aborts, resets, etc.) to 154 * allocate and queue down to the adapter per LUN. 155 * XXX KDM should this be controlled by CTL? 156 */ 157 #define CTLFE_IN_PER_LUN 1024 158 159 /* 160 * Timeout (in seconds) on CTIO CCB allocation for doing a DMA or sending 161 * status to the initiator. The SIM is expected to have its own timeouts, 162 * so we're not putting this timeout around the CCB execution time. The 163 * SIM should timeout and let us know if it has an issue. 164 */ 165 #define CTLFE_DMA_TIMEOUT 60 166 167 /* 168 * Turn this on to enable extra debugging prints. 169 */ 170 #if 0 171 #define CTLFE_DEBUG 172 #endif 173 174 /* 175 * Use randomly assigned WWNN/WWPN values. This is to work around an issue 176 * in the FreeBSD initiator that makes it unable to rescan the target if 177 * the target gets rebooted and the WWNN/WWPN stay the same. 178 */ 179 #if 0 180 #define RANDOM_WWNN 181 #endif 182 183 MALLOC_DEFINE(M_CTLFE, "CAM CTL FE", "CAM CTL FE interface"); 184 185 #define io_ptr ppriv_ptr0 186 187 /* This is only used in the CTIO */ 188 #define ccb_atio ppriv_ptr1 189 190 int ctlfeinitialize(void); 191 void ctlfeshutdown(void); 192 static periph_init_t ctlfeperiphinit; 193 static void ctlfeasync(void *callback_arg, uint32_t code, 194 struct cam_path *path, void *arg); 195 static periph_ctor_t ctlferegister; 196 static periph_oninv_t ctlfeoninvalidate; 197 static periph_dtor_t ctlfecleanup; 198 static periph_start_t ctlfestart; 199 static void ctlfedone(struct cam_periph *periph, 200 union ccb *done_ccb); 201 202 static void ctlfe_onoffline(void *arg, int online); 203 static void ctlfe_online(void *arg); 204 static void ctlfe_offline(void *arg); 205 static int ctlfe_lun_enable(void *arg, struct ctl_id targ_id, 206 int lun_id); 207 static int ctlfe_lun_disable(void *arg, struct ctl_id targ_id, 208 int lun_id); 209 static void ctlfe_dump_sim(struct cam_sim *sim); 210 static void ctlfe_dump_queue(struct ctlfe_lun_softc *softc); 211 static void ctlfe_datamove(union ctl_io *io); 212 static void ctlfe_done(union ctl_io *io); 213 static void ctlfe_dump(void); 214 215 static struct periph_driver ctlfe_driver = 216 { 217 ctlfeperiphinit, "ctl", 218 TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0, 219 CAM_PERIPH_DRV_EARLY 220 }; 221 222 static struct ctl_frontend ctlfe_frontend = 223 { 224 .name = "camtgt", 225 .init = ctlfeinitialize, 226 .fe_dump = ctlfe_dump, 227 .shutdown = ctlfeshutdown, 228 }; 229 CTL_FRONTEND_DECLARE(ctlfe, ctlfe_frontend); 230 231 extern struct ctl_softc *control_softc; 232 233 void 234 ctlfeshutdown(void) 235 { 236 return; 237 } 238 239 int 240 ctlfeinitialize(void) 241 { 242 243 STAILQ_INIT(&ctlfe_softc_list); 244 mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF); 245 periphdriver_register(&ctlfe_driver); 246 return (0); 247 } 248 249 void 250 ctlfeperiphinit(void) 251 { 252 cam_status status; 253 254 status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED | 255 AC_CONTRACT, ctlfeasync, NULL, NULL); 256 if (status != CAM_REQ_CMP) { 257 printf("ctl: Failed to attach async callback due to CAM " 258 "status 0x%x!\n", status); 259 } 260 } 261 262 static void 263 ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 264 { 265 struct ctlfe_softc *softc; 266 267 #ifdef CTLFEDEBUG 268 printf("%s: entered\n", __func__); 269 #endif 270 271 mtx_lock(&ctlfe_list_mtx); 272 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) { 273 if (softc->path_id == xpt_path_path_id(path)) 274 break; 275 } 276 mtx_unlock(&ctlfe_list_mtx); 277 278 /* 279 * When a new path gets registered, and it is capable of target 280 * mode, go ahead and attach. Later on, we may need to be more 281 * selective, but for now this will be sufficient. 282 */ 283 switch (code) { 284 case AC_PATH_REGISTERED: { 285 struct ctl_port *port; 286 struct ccb_pathinq *cpi; 287 int retval; 288 289 cpi = (struct ccb_pathinq *)arg; 290 291 /* Don't attach if it doesn't support target mode */ 292 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) { 293 #ifdef CTLFEDEBUG 294 printf("%s: SIM %s%d doesn't support target mode\n", 295 __func__, cpi->dev_name, cpi->unit_number); 296 #endif 297 break; 298 } 299 300 if (softc != NULL) { 301 #ifdef CTLFEDEBUG 302 printf("%s: CTL port for CAM path %u already exists\n", 303 __func__, xpt_path_path_id(path)); 304 #endif 305 break; 306 } 307 308 #ifdef CTLFE_INIT_ENABLE 309 if (ctlfe_num_targets >= ctlfe_max_targets) { 310 union ccb *ccb; 311 312 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP, 313 M_NOWAIT | M_ZERO); 314 if (ccb == NULL) { 315 printf("%s: unable to malloc CCB!\n", __func__); 316 return; 317 } 318 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE); 319 320 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB; 321 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE; 322 ccb->knob.xport_specific.fc.role = KNOB_ROLE_INITIATOR; 323 324 xpt_action(ccb); 325 326 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 327 CAM_REQ_CMP) { 328 printf("%s: SIM %s%d (path id %d) initiator " 329 "enable failed with status %#x\n", 330 __func__, cpi->dev_name, 331 cpi->unit_number, cpi->ccb_h.path_id, 332 ccb->ccb_h.status); 333 } else { 334 printf("%s: SIM %s%d (path id %d) initiator " 335 "enable succeeded\n", 336 __func__, cpi->dev_name, 337 cpi->unit_number, cpi->ccb_h.path_id); 338 } 339 340 free(ccb, M_TEMP); 341 342 break; 343 } else { 344 ctlfe_num_targets++; 345 } 346 347 printf("%s: ctlfe_num_targets = %d\n", __func__, 348 ctlfe_num_targets); 349 #endif /* CTLFE_INIT_ENABLE */ 350 351 /* 352 * We're in an interrupt context here, so we have to 353 * use M_NOWAIT. Of course this means trouble if we 354 * can't allocate memory. 355 */ 356 softc = malloc(sizeof(*softc), M_CTLFE, M_NOWAIT | M_ZERO); 357 if (softc == NULL) { 358 printf("%s: unable to malloc %zd bytes for softc\n", 359 __func__, sizeof(*softc)); 360 return; 361 } 362 363 softc->path_id = cpi->ccb_h.path_id; 364 softc->sim = xpt_path_sim(path); 365 if (cpi->maxio != 0) 366 softc->maxio = cpi->maxio; 367 else 368 softc->maxio = DFLTPHYS; 369 mtx_init(&softc->lun_softc_mtx, "LUN softc mtx", NULL, MTX_DEF); 370 STAILQ_INIT(&softc->lun_softc_list); 371 372 port = &softc->port; 373 port->frontend = &ctlfe_frontend; 374 375 /* 376 * XXX KDM should we be more accurate here ? 377 */ 378 if (cpi->transport == XPORT_FC) 379 port->port_type = CTL_PORT_FC; 380 else if (cpi->transport == XPORT_SAS) 381 port->port_type = CTL_PORT_SAS; 382 else 383 port->port_type = CTL_PORT_SCSI; 384 385 /* XXX KDM what should the real number be here? */ 386 port->num_requested_ctl_io = 4096; 387 snprintf(softc->port_name, sizeof(softc->port_name), 388 "%s%d", cpi->dev_name, cpi->unit_number); 389 /* 390 * XXX KDM it would be nice to allocate storage in the 391 * frontend structure itself. 392 */ 393 port->port_name = softc->port_name; 394 port->physical_port = cpi->bus_id; 395 port->virtual_port = 0; 396 port->port_online = ctlfe_online; 397 port->port_offline = ctlfe_offline; 398 port->onoff_arg = softc; 399 port->lun_enable = ctlfe_lun_enable; 400 port->lun_disable = ctlfe_lun_disable; 401 port->targ_lun_arg = softc; 402 port->fe_datamove = ctlfe_datamove; 403 port->fe_done = ctlfe_done; 404 /* 405 * XXX KDM the path inquiry doesn't give us the maximum 406 * number of targets supported. 407 */ 408 port->max_targets = cpi->max_target; 409 port->max_target_id = cpi->max_target; 410 411 /* 412 * XXX KDM need to figure out whether we're the master or 413 * slave. 414 */ 415 #ifdef CTLFEDEBUG 416 printf("%s: calling ctl_port_register() for %s%d\n", 417 __func__, cpi->dev_name, cpi->unit_number); 418 #endif 419 retval = ctl_port_register(port); 420 if (retval != 0) { 421 printf("%s: ctl_port_register() failed with " 422 "error %d!\n", __func__, retval); 423 mtx_destroy(&softc->lun_softc_mtx); 424 free(softc, M_CTLFE); 425 break; 426 } else { 427 mtx_lock(&ctlfe_list_mtx); 428 STAILQ_INSERT_TAIL(&ctlfe_softc_list, softc, links); 429 mtx_unlock(&ctlfe_list_mtx); 430 } 431 432 break; 433 } 434 case AC_PATH_DEREGISTERED: { 435 436 if (softc != NULL) { 437 /* 438 * XXX KDM are we certain at this point that there 439 * are no outstanding commands for this frontend? 440 */ 441 mtx_lock(&ctlfe_list_mtx); 442 STAILQ_REMOVE(&ctlfe_softc_list, softc, ctlfe_softc, 443 links); 444 mtx_unlock(&ctlfe_list_mtx); 445 ctl_port_deregister(&softc->port); 446 mtx_destroy(&softc->lun_softc_mtx); 447 free(softc, M_CTLFE); 448 } 449 break; 450 } 451 case AC_CONTRACT: { 452 struct ac_contract *ac; 453 454 ac = (struct ac_contract *)arg; 455 456 switch (ac->contract_number) { 457 case AC_CONTRACT_DEV_CHG: { 458 struct ac_device_changed *dev_chg; 459 int retval; 460 461 dev_chg = (struct ac_device_changed *)ac->contract_data; 462 463 printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n", 464 __func__, dev_chg->wwpn, dev_chg->port, 465 xpt_path_path_id(path), dev_chg->target, 466 (dev_chg->arrived == 0) ? "left" : "arrived"); 467 468 if (softc == NULL) { 469 printf("%s: CTL port for CAM path %u not " 470 "found!\n", __func__, 471 xpt_path_path_id(path)); 472 break; 473 } 474 if (dev_chg->arrived != 0) { 475 retval = ctl_add_initiator(&softc->port, 476 dev_chg->target, dev_chg->wwpn, NULL); 477 } else { 478 retval = ctl_remove_initiator(&softc->port, 479 dev_chg->target); 480 } 481 482 if (retval < 0) { 483 printf("%s: could not %s port %d iid %u " 484 "WWPN %#jx!\n", __func__, 485 (dev_chg->arrived != 0) ? "add" : 486 "remove", softc->port.targ_port, 487 dev_chg->target, 488 (uintmax_t)dev_chg->wwpn); 489 } 490 break; 491 } 492 default: 493 printf("%s: unsupported contract number %ju\n", 494 __func__, (uintmax_t)ac->contract_number); 495 break; 496 } 497 break; 498 } 499 default: 500 break; 501 } 502 } 503 504 static cam_status 505 ctlferegister(struct cam_periph *periph, void *arg) 506 { 507 struct ctlfe_softc *bus_softc; 508 struct ctlfe_lun_softc *softc; 509 union ccb en_lun_ccb; 510 cam_status status; 511 int i; 512 513 softc = (struct ctlfe_lun_softc *)arg; 514 bus_softc = softc->parent_softc; 515 516 TAILQ_INIT(&softc->work_queue); 517 softc->periph = periph; 518 periph->softc = softc; 519 520 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE); 521 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN; 522 en_lun_ccb.cel.grp6_len = 0; 523 en_lun_ccb.cel.grp7_len = 0; 524 en_lun_ccb.cel.enable = 1; 525 xpt_action(&en_lun_ccb); 526 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK); 527 if (status != CAM_REQ_CMP) { 528 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n", 529 __func__, en_lun_ccb.ccb_h.status); 530 return (status); 531 } 532 533 status = CAM_REQ_CMP; 534 535 for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) { 536 union ccb *new_ccb; 537 union ctl_io *new_io; 538 539 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE, 540 M_ZERO|M_NOWAIT); 541 if (new_ccb == NULL) { 542 status = CAM_RESRC_UNAVAIL; 543 break; 544 } 545 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref); 546 if (new_io == NULL) { 547 free(new_ccb, M_CTLFE); 548 status = CAM_RESRC_UNAVAIL; 549 break; 550 } 551 new_ccb->ccb_h.io_ptr = new_io; 552 553 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1); 554 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO; 555 new_ccb->ccb_h.cbfcnp = ctlfedone; 556 new_ccb->ccb_h.flags |= CAM_UNLOCKED; 557 xpt_action(new_ccb); 558 softc->atios_sent++; 559 status = new_ccb->ccb_h.status; 560 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 561 ctl_free_io(new_io); 562 free(new_ccb, M_CTLFE); 563 break; 564 } 565 } 566 567 status = cam_periph_acquire(periph); 568 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 569 xpt_print(periph->path, "%s: could not acquire reference " 570 "count, status = %#x\n", __func__, status); 571 return (status); 572 } 573 574 if (i == 0) { 575 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, " 576 "status 0x%x\n", __func__, status); 577 return (CAM_REQ_CMP_ERR); 578 } 579 580 for (i = 0; i < CTLFE_IN_PER_LUN; i++) { 581 union ccb *new_ccb; 582 union ctl_io *new_io; 583 584 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE, 585 M_ZERO|M_NOWAIT); 586 if (new_ccb == NULL) { 587 status = CAM_RESRC_UNAVAIL; 588 break; 589 } 590 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref); 591 if (new_io == NULL) { 592 free(new_ccb, M_CTLFE); 593 status = CAM_RESRC_UNAVAIL; 594 break; 595 } 596 new_ccb->ccb_h.io_ptr = new_io; 597 598 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1); 599 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY; 600 new_ccb->ccb_h.cbfcnp = ctlfedone; 601 new_ccb->ccb_h.flags |= CAM_UNLOCKED; 602 xpt_action(new_ccb); 603 softc->inots_sent++; 604 status = new_ccb->ccb_h.status; 605 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 606 /* 607 * Note that we don't free the CCB here. If the 608 * status is not CAM_REQ_INPROG, then we're 609 * probably talking to a SIM that says it is 610 * target-capable but doesn't support the 611 * XPT_IMMEDIATE_NOTIFY CCB. i.e. it supports the 612 * older API. In that case, it'll call xpt_done() 613 * on the CCB, and we need to free it in our done 614 * routine as a result. 615 */ 616 break; 617 } 618 } 619 if ((i == 0) 620 || (status != CAM_REQ_INPROG)) { 621 xpt_print(periph->path, "%s: could not allocate immediate " 622 "notify CCBs, status 0x%x\n", __func__, status); 623 return (CAM_REQ_CMP_ERR); 624 } 625 mtx_lock(&bus_softc->lun_softc_mtx); 626 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links); 627 mtx_unlock(&bus_softc->lun_softc_mtx); 628 return (CAM_REQ_CMP); 629 } 630 631 static void 632 ctlfeoninvalidate(struct cam_periph *periph) 633 { 634 union ccb en_lun_ccb; 635 cam_status status; 636 struct ctlfe_softc *bus_softc; 637 struct ctlfe_lun_softc *softc; 638 639 softc = (struct ctlfe_lun_softc *)periph->softc; 640 641 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE); 642 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN; 643 en_lun_ccb.cel.grp6_len = 0; 644 en_lun_ccb.cel.grp7_len = 0; 645 en_lun_ccb.cel.enable = 0; 646 xpt_action(&en_lun_ccb); 647 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK); 648 if (status != CAM_REQ_CMP) { 649 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n", 650 __func__, en_lun_ccb.ccb_h.status); 651 /* 652 * XXX KDM what do we do now? 653 */ 654 } 655 xpt_print(periph->path, "LUN removed, %ju ATIOs outstanding, %ju " 656 "INOTs outstanding, %d refs\n", softc->atios_sent - 657 softc->atios_returned, softc->inots_sent - 658 softc->inots_returned, periph->refcount); 659 660 bus_softc = softc->parent_softc; 661 mtx_lock(&bus_softc->lun_softc_mtx); 662 STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links); 663 mtx_unlock(&bus_softc->lun_softc_mtx); 664 } 665 666 static void 667 ctlfecleanup(struct cam_periph *periph) 668 { 669 struct ctlfe_lun_softc *softc; 670 671 xpt_print(periph->path, "%s: Called\n", __func__); 672 673 softc = (struct ctlfe_lun_softc *)periph->softc; 674 675 /* 676 * XXX KDM is there anything else that needs to be done here? 677 */ 678 679 free(softc, M_CTLFE); 680 } 681 682 static void 683 ctlfedata(struct ctlfe_lun_softc *softc, union ctl_io *io, 684 ccb_flags *flags, uint8_t **data_ptr, uint32_t *dxfer_len, 685 u_int16_t *sglist_cnt) 686 { 687 struct ctlfe_softc *bus_softc; 688 struct ctlfe_lun_cmd_info *cmd_info; 689 struct ctl_sg_entry *ctl_sglist; 690 bus_dma_segment_t *cam_sglist; 691 size_t off; 692 int i, idx; 693 694 cmd_info = (struct ctlfe_lun_cmd_info *)io->io_hdr.port_priv; 695 bus_softc = softc->parent_softc; 696 697 /* 698 * Set the direction, relative to the initiator. 699 */ 700 *flags &= ~CAM_DIR_MASK; 701 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 702 *flags |= CAM_DIR_IN; 703 else 704 *flags |= CAM_DIR_OUT; 705 706 *flags &= ~CAM_DATA_MASK; 707 idx = cmd_info->cur_transfer_index; 708 off = cmd_info->cur_transfer_off; 709 cmd_info->flags &= ~CTLFE_CMD_PIECEWISE; 710 if (io->scsiio.kern_sg_entries == 0) { 711 /* No S/G list. */ 712 *data_ptr = io->scsiio.kern_data_ptr + off; 713 if (io->scsiio.kern_data_len - off <= bus_softc->maxio) { 714 *dxfer_len = io->scsiio.kern_data_len - off; 715 } else { 716 *dxfer_len = bus_softc->maxio; 717 cmd_info->cur_transfer_index = -1; 718 cmd_info->cur_transfer_off = bus_softc->maxio; 719 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 720 } 721 *sglist_cnt = 0; 722 723 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) 724 *flags |= CAM_DATA_PADDR; 725 else 726 *flags |= CAM_DATA_VADDR; 727 } else { 728 /* S/G list with physical or virtual pointers. */ 729 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 730 cam_sglist = cmd_info->cam_sglist; 731 *dxfer_len = 0; 732 for (i = 0; i < io->scsiio.kern_sg_entries - idx; i++) { 733 cam_sglist[i].ds_addr = (bus_addr_t)ctl_sglist[i + idx].addr + off; 734 if (ctl_sglist[i + idx].len - off <= bus_softc->maxio - *dxfer_len) { 735 cam_sglist[i].ds_len = ctl_sglist[idx + i].len - off; 736 *dxfer_len += cam_sglist[i].ds_len; 737 } else { 738 cam_sglist[i].ds_len = bus_softc->maxio - *dxfer_len; 739 cmd_info->cur_transfer_index = idx + i; 740 cmd_info->cur_transfer_off = cam_sglist[i].ds_len + off; 741 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 742 *dxfer_len += cam_sglist[i].ds_len; 743 if (ctl_sglist[i].len != 0) 744 i++; 745 break; 746 } 747 if (i == (CTLFE_MAX_SEGS - 1) && 748 idx + i < (io->scsiio.kern_sg_entries - 1)) { 749 cmd_info->cur_transfer_index = idx + i + 1; 750 cmd_info->cur_transfer_off = 0; 751 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 752 i++; 753 break; 754 } 755 off = 0; 756 } 757 *sglist_cnt = i; 758 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) 759 *flags |= CAM_DATA_SG_PADDR; 760 else 761 *flags |= CAM_DATA_SG; 762 *data_ptr = (uint8_t *)cam_sglist; 763 } 764 } 765 766 static void 767 ctlfestart(struct cam_periph *periph, union ccb *start_ccb) 768 { 769 struct ctlfe_lun_softc *softc; 770 struct ctlfe_lun_cmd_info *cmd_info; 771 struct ccb_hdr *ccb_h; 772 struct ccb_accept_tio *atio; 773 struct ccb_scsiio *csio; 774 uint8_t *data_ptr; 775 uint32_t dxfer_len; 776 ccb_flags flags; 777 union ctl_io *io; 778 uint8_t scsi_status; 779 780 softc = (struct ctlfe_lun_softc *)periph->softc; 781 softc->ccbs_alloced++; 782 783 ccb_h = TAILQ_FIRST(&softc->work_queue); 784 if (ccb_h == NULL) { 785 softc->ccbs_freed++; 786 xpt_release_ccb(start_ccb); 787 return; 788 } 789 790 /* Take the ATIO off the work queue */ 791 TAILQ_REMOVE(&softc->work_queue, ccb_h, periph_links.tqe); 792 atio = (struct ccb_accept_tio *)ccb_h; 793 io = (union ctl_io *)ccb_h->io_ptr; 794 csio = &start_ccb->csio; 795 796 flags = atio->ccb_h.flags & 797 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK); 798 cmd_info = (struct ctlfe_lun_cmd_info *)io->io_hdr.port_priv; 799 cmd_info->cur_transfer_index = 0; 800 cmd_info->cur_transfer_off = 0; 801 cmd_info->flags = 0; 802 803 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) { 804 /* 805 * Datamove call, we need to setup the S/G list. 806 */ 807 scsi_status = 0; 808 csio->cdb_len = atio->cdb_len; 809 ctlfedata(softc, io, &flags, &data_ptr, &dxfer_len, 810 &csio->sglist_cnt); 811 io->scsiio.ext_data_filled += dxfer_len; 812 if (io->scsiio.ext_data_filled > io->scsiio.kern_total_len) { 813 xpt_print(periph->path, "%s: tag 0x%04x " 814 "fill len %u > total %u\n", 815 __func__, io->scsiio.tag_num, 816 io->scsiio.ext_data_filled, 817 io->scsiio.kern_total_len); 818 } 819 } else { 820 /* 821 * We're done, send status back. 822 */ 823 if ((io->io_hdr.flags & CTL_FLAG_ABORT) && 824 (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) { 825 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED; 826 827 /* 828 * If this command was aborted, we don't 829 * need to send status back to the SIM. 830 * Just free the CTIO and ctl_io, and 831 * recycle the ATIO back to the SIM. 832 */ 833 xpt_print(periph->path, "%s: aborted " 834 "command 0x%04x discarded\n", 835 __func__, io->scsiio.tag_num); 836 /* 837 * For a wildcard attachment, commands can 838 * come in with a specific target/lun. Reset 839 * the target and LUN fields back to the 840 * wildcard values before we send them back 841 * down to the SIM. The SIM has a wildcard 842 * LUN enabled, not whatever target/lun 843 * these happened to be. 844 */ 845 if (softc->flags & CTLFE_LUN_WILDCARD) { 846 atio->ccb_h.target_id = CAM_TARGET_WILDCARD; 847 atio->ccb_h.target_lun = CAM_LUN_WILDCARD; 848 } 849 850 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) { 851 cam_release_devq(periph->path, 852 /*relsim_flags*/0, 853 /*reduction*/0, 854 /*timeout*/0, 855 /*getcount_only*/0); 856 atio->ccb_h.status &= ~CAM_DEV_QFRZN; 857 } 858 859 if (atio->ccb_h.func_code != XPT_ACCEPT_TARGET_IO) { 860 xpt_print(periph->path, "%s: func_code " 861 "is %#x\n", __func__, 862 atio->ccb_h.func_code); 863 } 864 start_ccb->ccb_h.func_code = XPT_ABORT; 865 start_ccb->cab.abort_ccb = (union ccb *)atio; 866 867 /* Tell the SIM that we've aborted this ATIO */ 868 xpt_action(start_ccb); 869 softc->ccbs_freed++; 870 xpt_release_ccb(start_ccb); 871 872 /* 873 * Send the ATIO back down to the SIM. 874 */ 875 xpt_action((union ccb *)atio); 876 softc->atios_sent++; 877 878 /* 879 * If we still have work to do, ask for 880 * another CCB. Otherwise, deactivate our 881 * callout. 882 */ 883 if (!TAILQ_EMPTY(&softc->work_queue)) 884 xpt_schedule(periph, /*priority*/ 1); 885 return; 886 } 887 data_ptr = NULL; 888 dxfer_len = 0; 889 csio->sglist_cnt = 0; 890 scsi_status = 0; 891 } 892 if ((io->io_hdr.flags & CTL_FLAG_STATUS_QUEUED) && 893 (cmd_info->flags & CTLFE_CMD_PIECEWISE) == 0 && 894 ((io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) == 0 || 895 io->io_hdr.status == CTL_SUCCESS)) { 896 io->io_hdr.flags |= CTL_FLAG_STATUS_SENT; 897 flags |= CAM_SEND_STATUS; 898 scsi_status = io->scsiio.scsi_status; 899 csio->sense_len = io->scsiio.sense_len; 900 #ifdef CTLFEDEBUG 901 printf("%s: tag %04x status %x\n", __func__, 902 atio->tag_id, io->io_hdr.status); 903 #endif 904 if (csio->sense_len != 0) { 905 csio->sense_data = io->scsiio.sense_data; 906 flags |= CAM_SEND_SENSE; 907 } else if (scsi_status == SCSI_STATUS_CHECK_COND) { 908 xpt_print(periph->path, "%s: check condition " 909 "with no sense\n", __func__); 910 } 911 } 912 913 #ifdef CTLFEDEBUG 914 printf("%s: %s: tag %04x flags %x ptr %p len %u\n", __func__, 915 (flags & CAM_SEND_STATUS) ? "done" : "datamove", 916 atio->tag_id, flags, data_ptr, dxfer_len); 917 #endif 918 919 /* 920 * Valid combinations: 921 * - CAM_SEND_STATUS, CAM_DATA_SG = 0, dxfer_len = 0, 922 * sglist_cnt = 0 923 * - CAM_SEND_STATUS = 0, CAM_DATA_SG = 0, dxfer_len != 0, 924 * sglist_cnt = 0 925 * - CAM_SEND_STATUS = 0, CAM_DATA_SG, dxfer_len != 0, 926 * sglist_cnt != 0 927 */ 928 #ifdef CTLFEDEBUG 929 if (((flags & CAM_SEND_STATUS) 930 && (((flags & CAM_DATA_SG) != 0) 931 || (dxfer_len != 0) 932 || (csio->sglist_cnt != 0))) 933 || (((flags & CAM_SEND_STATUS) == 0) 934 && (dxfer_len == 0)) 935 || ((flags & CAM_DATA_SG) 936 && (csio->sglist_cnt == 0)) 937 || (((flags & CAM_DATA_SG) == 0) 938 && (csio->sglist_cnt != 0))) { 939 printf("%s: tag %04x cdb %02x flags %#x dxfer_len " 940 "%d sg %u\n", __func__, atio->tag_id, 941 atio->cdb_io.cdb_bytes[0], flags, dxfer_len, 942 csio->sglist_cnt); 943 printf("%s: tag %04x io status %#x\n", __func__, 944 atio->tag_id, io->io_hdr.status); 945 } 946 #endif 947 cam_fill_ctio(csio, 948 /*retries*/ 2, 949 ctlfedone, 950 flags, 951 (flags & CAM_TAG_ACTION_VALID) ? MSG_SIMPLE_Q_TAG : 0, 952 atio->tag_id, 953 atio->init_id, 954 scsi_status, 955 /*data_ptr*/ data_ptr, 956 /*dxfer_len*/ dxfer_len, 957 /*timeout*/ 5 * 1000); 958 start_ccb->ccb_h.flags |= CAM_UNLOCKED; 959 start_ccb->ccb_h.ccb_atio = atio; 960 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 961 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG; 962 io->io_hdr.flags &= ~(CTL_FLAG_DMA_QUEUED | CTL_FLAG_STATUS_QUEUED); 963 964 softc->ctios_sent++; 965 966 cam_periph_unlock(periph); 967 xpt_action(start_ccb); 968 cam_periph_lock(periph); 969 970 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) { 971 cam_release_devq(periph->path, 972 /*relsim_flags*/0, 973 /*reduction*/0, 974 /*timeout*/0, 975 /*getcount_only*/0); 976 atio->ccb_h.status &= ~CAM_DEV_QFRZN; 977 } 978 979 /* 980 * If we still have work to do, ask for another CCB. 981 */ 982 if (!TAILQ_EMPTY(&softc->work_queue)) 983 xpt_schedule(periph, /*priority*/ 1); 984 } 985 986 static void 987 ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb) 988 { 989 struct ctlfe_lun_softc *softc; 990 991 softc = (struct ctlfe_lun_softc *)periph->softc; 992 993 switch (ccb->ccb_h.func_code) { 994 case XPT_ACCEPT_TARGET_IO: 995 softc->atios_returned++; 996 break; 997 case XPT_IMMEDIATE_NOTIFY: 998 case XPT_NOTIFY_ACKNOWLEDGE: 999 softc->inots_returned++; 1000 break; 1001 default: 1002 break; 1003 } 1004 1005 ctl_free_io(ccb->ccb_h.io_ptr); 1006 free(ccb, M_CTLFE); 1007 1008 KASSERT(softc->atios_returned <= softc->atios_sent, ("%s: " 1009 "atios_returned %ju > atios_sent %ju", __func__, 1010 softc->atios_returned, softc->atios_sent)); 1011 KASSERT(softc->inots_returned <= softc->inots_sent, ("%s: " 1012 "inots_returned %ju > inots_sent %ju", __func__, 1013 softc->inots_returned, softc->inots_sent)); 1014 1015 /* 1016 * If we have received all of our CCBs, we can release our 1017 * reference on the peripheral driver. It will probably go away 1018 * now. 1019 */ 1020 if ((softc->atios_returned == softc->atios_sent) 1021 && (softc->inots_returned == softc->inots_sent)) { 1022 cam_periph_release_locked(periph); 1023 } 1024 } 1025 1026 static int 1027 ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset) 1028 { 1029 uint64_t lba; 1030 uint32_t num_blocks, nbc; 1031 uint8_t *cmdbyt = (atio->ccb_h.flags & CAM_CDB_POINTER)? 1032 atio->cdb_io.cdb_ptr : atio->cdb_io.cdb_bytes; 1033 1034 nbc = offset >> 9; /* ASSUMING 512 BYTE BLOCKS */ 1035 1036 switch (cmdbyt[0]) { 1037 case READ_6: 1038 case WRITE_6: 1039 { 1040 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt; 1041 lba = scsi_3btoul(cdb->addr); 1042 lba &= 0x1fffff; 1043 num_blocks = cdb->length; 1044 if (num_blocks == 0) 1045 num_blocks = 256; 1046 lba += nbc; 1047 num_blocks -= nbc; 1048 scsi_ulto3b(lba, cdb->addr); 1049 cdb->length = num_blocks; 1050 break; 1051 } 1052 case READ_10: 1053 case WRITE_10: 1054 { 1055 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt; 1056 lba = scsi_4btoul(cdb->addr); 1057 num_blocks = scsi_2btoul(cdb->length); 1058 lba += nbc; 1059 num_blocks -= nbc; 1060 scsi_ulto4b(lba, cdb->addr); 1061 scsi_ulto2b(num_blocks, cdb->length); 1062 break; 1063 } 1064 case READ_12: 1065 case WRITE_12: 1066 { 1067 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt; 1068 lba = scsi_4btoul(cdb->addr); 1069 num_blocks = scsi_4btoul(cdb->length); 1070 lba += nbc; 1071 num_blocks -= nbc; 1072 scsi_ulto4b(lba, cdb->addr); 1073 scsi_ulto4b(num_blocks, cdb->length); 1074 break; 1075 } 1076 case READ_16: 1077 case WRITE_16: 1078 case WRITE_ATOMIC_16: 1079 { 1080 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt; 1081 lba = scsi_8btou64(cdb->addr); 1082 num_blocks = scsi_4btoul(cdb->length); 1083 lba += nbc; 1084 num_blocks -= nbc; 1085 scsi_u64to8b(lba, cdb->addr); 1086 scsi_ulto4b(num_blocks, cdb->length); 1087 break; 1088 } 1089 default: 1090 return -1; 1091 } 1092 return (0); 1093 } 1094 1095 static void 1096 ctlfedone(struct cam_periph *periph, union ccb *done_ccb) 1097 { 1098 struct ctlfe_lun_softc *softc; 1099 struct ctlfe_softc *bus_softc; 1100 struct ccb_accept_tio *atio = NULL; 1101 union ctl_io *io = NULL; 1102 struct mtx *mtx; 1103 1104 KASSERT((done_ccb->ccb_h.flags & CAM_UNLOCKED) != 0, 1105 ("CCB in ctlfedone() without CAM_UNLOCKED flag")); 1106 #ifdef CTLFE_DEBUG 1107 printf("%s: entered, func_code = %#x\n", __func__, 1108 done_ccb->ccb_h.func_code); 1109 #endif 1110 1111 softc = (struct ctlfe_lun_softc *)periph->softc; 1112 bus_softc = softc->parent_softc; 1113 mtx = cam_periph_mtx(periph); 1114 mtx_lock(mtx); 1115 1116 /* 1117 * If the peripheral is invalid, ATIOs and immediate notify CCBs 1118 * need to be freed. Most of the ATIOs and INOTs that come back 1119 * will be CCBs that are being returned from the SIM as a result of 1120 * our disabling the LUN. 1121 * 1122 * Other CCB types are handled in their respective cases below. 1123 */ 1124 if (periph->flags & CAM_PERIPH_INVALID) { 1125 switch (done_ccb->ccb_h.func_code) { 1126 case XPT_ACCEPT_TARGET_IO: 1127 case XPT_IMMEDIATE_NOTIFY: 1128 case XPT_NOTIFY_ACKNOWLEDGE: 1129 ctlfe_free_ccb(periph, done_ccb); 1130 goto out; 1131 default: 1132 break; 1133 } 1134 1135 } 1136 switch (done_ccb->ccb_h.func_code) { 1137 case XPT_ACCEPT_TARGET_IO: { 1138 1139 atio = &done_ccb->atio; 1140 1141 softc->atios_returned++; 1142 1143 resubmit: 1144 /* 1145 * Allocate a ctl_io, pass it to CTL, and wait for the 1146 * datamove or done. 1147 */ 1148 mtx_unlock(mtx); 1149 io = done_ccb->ccb_h.io_ptr; 1150 ctl_zero_io(io); 1151 1152 /* Save pointers on both sides */ 1153 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = done_ccb; 1154 done_ccb->ccb_h.io_ptr = io; 1155 1156 /* 1157 * Only SCSI I/O comes down this path, resets, etc. come 1158 * down the immediate notify path below. 1159 */ 1160 io->io_hdr.io_type = CTL_IO_SCSI; 1161 io->io_hdr.nexus.initid.id = atio->init_id; 1162 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port; 1163 io->io_hdr.nexus.targ_target.id = atio->ccb_h.target_id; 1164 io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun; 1165 io->scsiio.tag_num = atio->tag_id; 1166 switch (atio->tag_action) { 1167 case CAM_TAG_ACTION_NONE: 1168 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 1169 break; 1170 case MSG_SIMPLE_TASK: 1171 io->scsiio.tag_type = CTL_TAG_SIMPLE; 1172 break; 1173 case MSG_HEAD_OF_QUEUE_TASK: 1174 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 1175 break; 1176 case MSG_ORDERED_TASK: 1177 io->scsiio.tag_type = CTL_TAG_ORDERED; 1178 break; 1179 case MSG_ACA_TASK: 1180 io->scsiio.tag_type = CTL_TAG_ACA; 1181 break; 1182 default: 1183 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 1184 printf("%s: unhandled tag type %#x!!\n", __func__, 1185 atio->tag_action); 1186 break; 1187 } 1188 if (atio->cdb_len > sizeof(io->scsiio.cdb)) { 1189 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 1190 __func__, atio->cdb_len, sizeof(io->scsiio.cdb)); 1191 } 1192 io->scsiio.cdb_len = min(atio->cdb_len, sizeof(io->scsiio.cdb)); 1193 bcopy(atio->cdb_io.cdb_bytes, io->scsiio.cdb, 1194 io->scsiio.cdb_len); 1195 1196 #ifdef CTLFEDEBUG 1197 printf("%s: %ju:%d:%ju:%d: tag %04x CDB %02x\n", __func__, 1198 (uintmax_t)io->io_hdr.nexus.initid.id, 1199 io->io_hdr.nexus.targ_port, 1200 (uintmax_t)io->io_hdr.nexus.targ_target.id, 1201 io->io_hdr.nexus.targ_lun, 1202 io->scsiio.tag_num, io->scsiio.cdb[0]); 1203 #endif 1204 1205 ctl_queue(io); 1206 return; 1207 } 1208 case XPT_CONT_TARGET_IO: { 1209 int srr = 0; 1210 uint32_t srr_off = 0; 1211 1212 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio; 1213 io = (union ctl_io *)atio->ccb_h.io_ptr; 1214 1215 softc->ctios_returned++; 1216 #ifdef CTLFEDEBUG 1217 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n", 1218 __func__, atio->tag_id, done_ccb->ccb_h.flags); 1219 #endif 1220 /* 1221 * Handle SRR case were the data pointer is pushed back hack 1222 */ 1223 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV 1224 && done_ccb->csio.msg_ptr != NULL 1225 && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED 1226 && done_ccb->csio.msg_ptr[1] == 5 1227 && done_ccb->csio.msg_ptr[2] == 0) { 1228 srr = 1; 1229 srr_off = 1230 (done_ccb->csio.msg_ptr[3] << 24) 1231 | (done_ccb->csio.msg_ptr[4] << 16) 1232 | (done_ccb->csio.msg_ptr[5] << 8) 1233 | (done_ccb->csio.msg_ptr[6]); 1234 } 1235 1236 if (srr && (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) { 1237 /* 1238 * If status was being sent, the back end data is now 1239 * history. Hack it up and resubmit a new command with 1240 * the CDB adjusted. If the SIM does the right thing, 1241 * all of the resid math should work. 1242 */ 1243 softc->ccbs_freed++; 1244 xpt_release_ccb(done_ccb); 1245 if (ctlfe_adjust_cdb(atio, srr_off) == 0) { 1246 done_ccb = (union ccb *)atio; 1247 goto resubmit; 1248 } 1249 /* 1250 * Fall through to doom.... 1251 */ 1252 } else if (srr) { 1253 /* 1254 * If we have an srr and we're still sending data, we 1255 * should be able to adjust offsets and cycle again. 1256 */ 1257 io->scsiio.kern_rel_offset = 1258 io->scsiio.ext_data_filled = srr_off; 1259 io->scsiio.ext_data_len = io->scsiio.kern_total_len - 1260 io->scsiio.kern_rel_offset; 1261 softc->ccbs_freed++; 1262 io->scsiio.io_hdr.status = CTL_STATUS_NONE; 1263 xpt_release_ccb(done_ccb); 1264 TAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h, 1265 periph_links.tqe); 1266 xpt_schedule(periph, /*priority*/ 1); 1267 break; 1268 } 1269 1270 /* 1271 * If we were sending status back to the initiator, free up 1272 * resources. If we were doing a datamove, call the 1273 * datamove done routine. 1274 */ 1275 if ((io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) { 1276 softc->ccbs_freed++; 1277 xpt_release_ccb(done_ccb); 1278 /* 1279 * For a wildcard attachment, commands can come in 1280 * with a specific target/lun. Reset the target 1281 * and LUN fields back to the wildcard values before 1282 * we send them back down to the SIM. The SIM has 1283 * a wildcard LUN enabled, not whatever target/lun 1284 * these happened to be. 1285 */ 1286 if (softc->flags & CTLFE_LUN_WILDCARD) { 1287 atio->ccb_h.target_id = CAM_TARGET_WILDCARD; 1288 atio->ccb_h.target_lun = CAM_LUN_WILDCARD; 1289 } 1290 if (periph->flags & CAM_PERIPH_INVALID) { 1291 ctlfe_free_ccb(periph, (union ccb *)atio); 1292 } else { 1293 softc->atios_sent++; 1294 mtx_unlock(mtx); 1295 xpt_action((union ccb *)atio); 1296 return; 1297 } 1298 } else { 1299 struct ctlfe_lun_cmd_info *cmd_info; 1300 struct ccb_scsiio *csio; 1301 1302 csio = &done_ccb->csio; 1303 cmd_info = (struct ctlfe_lun_cmd_info *) 1304 io->io_hdr.port_priv; 1305 1306 io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG; 1307 1308 io->scsiio.ext_data_len += csio->dxfer_len; 1309 if (io->scsiio.ext_data_len > 1310 io->scsiio.kern_total_len) { 1311 xpt_print(periph->path, "%s: tag 0x%04x " 1312 "done len %u > total %u sent %u\n", 1313 __func__, io->scsiio.tag_num, 1314 io->scsiio.ext_data_len, 1315 io->scsiio.kern_total_len, 1316 io->scsiio.ext_data_filled); 1317 } 1318 /* 1319 * Translate CAM status to CTL status. Success 1320 * does not change the overall, ctl_io status. In 1321 * that case we just set port_status to 0. If we 1322 * have a failure, though, set a data phase error 1323 * for the overall ctl_io. 1324 */ 1325 switch (done_ccb->ccb_h.status & CAM_STATUS_MASK) { 1326 case CAM_REQ_CMP: 1327 io->io_hdr.port_status = 0; 1328 break; 1329 default: 1330 /* 1331 * XXX KDM we probably need to figure out a 1332 * standard set of errors that the SIM 1333 * drivers should return in the event of a 1334 * data transfer failure. A data phase 1335 * error will at least point the user to a 1336 * data transfer error of some sort. 1337 * Hopefully the SIM printed out some 1338 * additional information to give the user 1339 * a clue what happened. 1340 */ 1341 io->io_hdr.port_status = 0xbad1; 1342 ctl_set_data_phase_error(&io->scsiio); 1343 /* 1344 * XXX KDM figure out residual. 1345 */ 1346 break; 1347 } 1348 /* 1349 * If we had to break this S/G list into multiple 1350 * pieces, figure out where we are in the list, and 1351 * continue sending pieces if necessary. 1352 */ 1353 if ((cmd_info->flags & CTLFE_CMD_PIECEWISE) 1354 && (io->io_hdr.port_status == 0)) { 1355 ccb_flags flags; 1356 uint8_t scsi_status; 1357 uint8_t *data_ptr; 1358 uint32_t dxfer_len; 1359 1360 flags = atio->ccb_h.flags & 1361 (CAM_DIS_DISCONNECT| 1362 CAM_TAG_ACTION_VALID); 1363 1364 ctlfedata(softc, io, &flags, &data_ptr, 1365 &dxfer_len, &csio->sglist_cnt); 1366 1367 scsi_status = 0; 1368 1369 if (((flags & CAM_SEND_STATUS) == 0) 1370 && (dxfer_len == 0)) { 1371 printf("%s: tag %04x no status or " 1372 "len cdb = %02x\n", __func__, 1373 atio->tag_id, 1374 atio->cdb_io.cdb_bytes[0]); 1375 printf("%s: tag %04x io status %#x\n", 1376 __func__, atio->tag_id, 1377 io->io_hdr.status); 1378 } 1379 1380 cam_fill_ctio(csio, 1381 /*retries*/ 2, 1382 ctlfedone, 1383 flags, 1384 (flags & CAM_TAG_ACTION_VALID) ? 1385 MSG_SIMPLE_Q_TAG : 0, 1386 atio->tag_id, 1387 atio->init_id, 1388 scsi_status, 1389 /*data_ptr*/ data_ptr, 1390 /*dxfer_len*/ dxfer_len, 1391 /*timeout*/ 5 * 1000); 1392 1393 csio->ccb_h.flags |= CAM_UNLOCKED; 1394 csio->resid = 0; 1395 csio->ccb_h.ccb_atio = atio; 1396 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG; 1397 softc->ctios_sent++; 1398 mtx_unlock(mtx); 1399 xpt_action((union ccb *)csio); 1400 } else { 1401 /* 1402 * Release the CTIO. The ATIO will be sent back 1403 * down to the SIM once we send status. 1404 */ 1405 softc->ccbs_freed++; 1406 xpt_release_ccb(done_ccb); 1407 mtx_unlock(mtx); 1408 1409 /* Call the backend move done callback */ 1410 io->scsiio.be_move_done(io); 1411 } 1412 return; 1413 } 1414 break; 1415 } 1416 case XPT_IMMEDIATE_NOTIFY: { 1417 union ctl_io *io; 1418 struct ccb_immediate_notify *inot; 1419 cam_status status; 1420 int frozen, send_ctl_io; 1421 1422 inot = &done_ccb->cin1; 1423 1424 softc->inots_returned++; 1425 1426 frozen = (done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0; 1427 1428 printf("%s: got XPT_IMMEDIATE_NOTIFY status %#x tag %#x " 1429 "seq %#x\n", __func__, inot->ccb_h.status, 1430 inot->tag_id, inot->seq_id); 1431 1432 io = done_ccb->ccb_h.io_ptr; 1433 ctl_zero_io(io); 1434 1435 send_ctl_io = 1; 1436 1437 io->io_hdr.io_type = CTL_IO_TASK; 1438 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr =done_ccb; 1439 inot->ccb_h.io_ptr = io; 1440 io->io_hdr.nexus.initid.id = inot->initiator_id; 1441 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port; 1442 io->io_hdr.nexus.targ_target.id = inot->ccb_h.target_id; 1443 io->io_hdr.nexus.targ_lun = inot->ccb_h.target_lun; 1444 /* XXX KDM should this be the tag_id? */ 1445 io->taskio.tag_num = inot->seq_id; 1446 1447 status = inot->ccb_h.status & CAM_STATUS_MASK; 1448 switch (status) { 1449 case CAM_SCSI_BUS_RESET: 1450 io->taskio.task_action = CTL_TASK_BUS_RESET; 1451 break; 1452 case CAM_BDR_SENT: 1453 io->taskio.task_action = CTL_TASK_TARGET_RESET; 1454 break; 1455 case CAM_MESSAGE_RECV: 1456 switch (inot->arg) { 1457 case MSG_ABORT_TASK_SET: 1458 io->taskio.task_action = 1459 CTL_TASK_ABORT_TASK_SET; 1460 break; 1461 case MSG_TARGET_RESET: 1462 io->taskio.task_action = 1463 CTL_TASK_TARGET_RESET; 1464 break; 1465 case MSG_ABORT_TASK: 1466 io->taskio.task_action = 1467 CTL_TASK_ABORT_TASK; 1468 break; 1469 case MSG_LOGICAL_UNIT_RESET: 1470 io->taskio.task_action = 1471 CTL_TASK_LUN_RESET; 1472 break; 1473 case MSG_CLEAR_TASK_SET: 1474 io->taskio.task_action = 1475 CTL_TASK_CLEAR_TASK_SET; 1476 break; 1477 case MSG_CLEAR_ACA: 1478 io->taskio.task_action = 1479 CTL_TASK_CLEAR_ACA; 1480 break; 1481 case MSG_NOOP: 1482 send_ctl_io = 0; 1483 break; 1484 default: 1485 xpt_print(periph->path, 1486 "%s: unsupported message 0x%x\n", 1487 __func__, inot->arg); 1488 send_ctl_io = 0; 1489 break; 1490 } 1491 break; 1492 case CAM_REQ_ABORTED: 1493 /* 1494 * This request was sent back by the driver. 1495 * XXX KDM what do we do here? 1496 */ 1497 send_ctl_io = 0; 1498 break; 1499 case CAM_REQ_INVALID: 1500 case CAM_PROVIDE_FAIL: 1501 default: 1502 /* 1503 * We should only get here if we're talking 1504 * to a talking to a SIM that is target 1505 * capable but supports the old API. In 1506 * that case, we need to just free the CCB. 1507 * If we actually send a notify acknowledge, 1508 * it will send that back with an error as 1509 * well. 1510 */ 1511 1512 if ((status != CAM_REQ_INVALID) 1513 && (status != CAM_PROVIDE_FAIL)) 1514 xpt_print(periph->path, 1515 "%s: unsupported CAM status 0x%x\n", 1516 __func__, status); 1517 1518 ctlfe_free_ccb(periph, done_ccb); 1519 1520 goto out; 1521 } 1522 if (send_ctl_io != 0) { 1523 ctl_queue(io); 1524 } else { 1525 done_ccb->ccb_h.status = CAM_REQ_INPROG; 1526 done_ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE; 1527 xpt_action(done_ccb); 1528 } 1529 1530 if (frozen != 0) { 1531 cam_release_devq(periph->path, 1532 /*relsim_flags*/ 0, 1533 /*opening reduction*/ 0, 1534 /*timeout*/ 0, 1535 /*getcount_only*/ 0); 1536 } 1537 break; 1538 } 1539 case XPT_NOTIFY_ACKNOWLEDGE: 1540 /* 1541 * Queue this back down to the SIM as an immediate notify. 1542 */ 1543 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY; 1544 xpt_action(done_ccb); 1545 softc->inots_sent++; 1546 break; 1547 case XPT_SET_SIM_KNOB: 1548 case XPT_GET_SIM_KNOB: 1549 break; 1550 default: 1551 panic("%s: unexpected CCB type %#x", __func__, 1552 done_ccb->ccb_h.func_code); 1553 break; 1554 } 1555 1556 out: 1557 mtx_unlock(mtx); 1558 } 1559 1560 static void 1561 ctlfe_onoffline(void *arg, int online) 1562 { 1563 struct ctlfe_softc *bus_softc; 1564 union ccb *ccb; 1565 cam_status status; 1566 struct cam_path *path; 1567 int set_wwnn; 1568 1569 bus_softc = (struct ctlfe_softc *)arg; 1570 1571 set_wwnn = 0; 1572 1573 status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id, 1574 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1575 if (status != CAM_REQ_CMP) { 1576 printf("%s: unable to create path!\n", __func__); 1577 return; 1578 } 1579 ccb = xpt_alloc_ccb(); 1580 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE); 1581 1582 /* 1583 * Copan WWN format: 1584 * 1585 * Bits 63-60: 0x5 NAA, IEEE registered name 1586 * Bits 59-36: 0x000ED5 IEEE Company name assigned to Copan 1587 * Bits 35-12: Copan SSN (Sequential Serial Number) 1588 * Bits 11-8: Type of port: 1589 * 1 == N-Port 1590 * 2 == F-Port 1591 * 3 == NL-Port 1592 * Bits 7-0: 0 == Node Name, >0 == Port Number 1593 */ 1594 1595 if (online != 0) { 1596 1597 ccb->ccb_h.func_code = XPT_GET_SIM_KNOB; 1598 1599 1600 xpt_action(ccb); 1601 1602 1603 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){ 1604 #ifdef RANDOM_WWNN 1605 uint64_t random_bits; 1606 #endif 1607 1608 printf("%s: %s current WWNN %#jx\n", __func__, 1609 bus_softc->port_name, 1610 ccb->knob.xport_specific.fc.wwnn); 1611 printf("%s: %s current WWPN %#jx\n", __func__, 1612 bus_softc->port_name, 1613 ccb->knob.xport_specific.fc.wwpn); 1614 1615 #ifdef RANDOM_WWNN 1616 arc4rand(&random_bits, sizeof(random_bits), 0); 1617 #endif 1618 1619 /* 1620 * XXX KDM this is a bit of a kludge for now. We 1621 * take the current WWNN/WWPN from the card, and 1622 * replace the company identifier and the NL-Port 1623 * indicator and the port number (for the WWPN). 1624 * This should be replaced later with ddb_GetWWNN, 1625 * or possibly a more centralized scheme. (It 1626 * would be nice to have the WWNN/WWPN for each 1627 * port stored in the ctl_port structure.) 1628 */ 1629 #ifdef RANDOM_WWNN 1630 ccb->knob.xport_specific.fc.wwnn = 1631 (random_bits & 1632 0x0000000fffffff00ULL) | 1633 /* Company ID */ 0x5000ED5000000000ULL | 1634 /* NL-Port */ 0x0300; 1635 ccb->knob.xport_specific.fc.wwpn = 1636 (random_bits & 1637 0x0000000fffffff00ULL) | 1638 /* Company ID */ 0x5000ED5000000000ULL | 1639 /* NL-Port */ 0x3000 | 1640 /* Port Num */ (bus_softc->port.targ_port & 0xff); 1641 1642 /* 1643 * This is a bit of an API break/reversal, but if 1644 * we're doing the random WWNN that's a little 1645 * different anyway. So record what we're actually 1646 * using with the frontend code so it's reported 1647 * accurately. 1648 */ 1649 ctl_port_set_wwns(&bus_softc->port, 1650 true, ccb->knob.xport_specific.fc.wwnn, 1651 true, ccb->knob.xport_specific.fc.wwpn); 1652 set_wwnn = 1; 1653 #else /* RANDOM_WWNN */ 1654 /* 1655 * If the user has specified a WWNN/WWPN, send them 1656 * down to the SIM. Otherwise, record what the SIM 1657 * has reported. 1658 */ 1659 if ((bus_softc->port.wwnn != 0) 1660 && (bus_softc->port.wwpn != 0)) { 1661 ccb->knob.xport_specific.fc.wwnn = 1662 bus_softc->port.wwnn; 1663 ccb->knob.xport_specific.fc.wwpn = 1664 bus_softc->port.wwpn; 1665 set_wwnn = 1; 1666 } else { 1667 ctl_port_set_wwns(&bus_softc->port, 1668 true, ccb->knob.xport_specific.fc.wwnn, 1669 true, ccb->knob.xport_specific.fc.wwpn); 1670 } 1671 #endif /* RANDOM_WWNN */ 1672 1673 1674 if (set_wwnn != 0) { 1675 printf("%s: %s new WWNN %#jx\n", __func__, 1676 bus_softc->port_name, 1677 ccb->knob.xport_specific.fc.wwnn); 1678 printf("%s: %s new WWPN %#jx\n", __func__, 1679 bus_softc->port_name, 1680 ccb->knob.xport_specific.fc.wwpn); 1681 } 1682 } else { 1683 printf("%s: %s has no valid WWNN/WWPN\n", __func__, 1684 bus_softc->port_name); 1685 } 1686 } 1687 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB; 1688 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE; 1689 if (set_wwnn != 0) 1690 ccb->knob.xport_specific.valid |= KNOB_VALID_ADDRESS; 1691 1692 if (online != 0) 1693 ccb->knob.xport_specific.fc.role = KNOB_ROLE_TARGET; 1694 else 1695 ccb->knob.xport_specific.fc.role = KNOB_ROLE_NONE; 1696 1697 xpt_action(ccb); 1698 1699 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1700 printf("%s: SIM %s (path id %d) target %s failed with " 1701 "status %#x\n", 1702 __func__, bus_softc->port_name, bus_softc->path_id, 1703 (online != 0) ? "enable" : "disable", 1704 ccb->ccb_h.status); 1705 } else { 1706 printf("%s: SIM %s (path id %d) target %s succeeded\n", 1707 __func__, bus_softc->port_name, bus_softc->path_id, 1708 (online != 0) ? "enable" : "disable"); 1709 } 1710 1711 xpt_free_path(path); 1712 xpt_free_ccb(ccb); 1713 } 1714 1715 static void 1716 ctlfe_online(void *arg) 1717 { 1718 struct ctlfe_softc *bus_softc; 1719 struct cam_path *path; 1720 cam_status status; 1721 struct ctlfe_lun_softc *lun_softc; 1722 struct cam_periph *periph; 1723 1724 bus_softc = (struct ctlfe_softc *)arg; 1725 1726 /* 1727 * Create the wildcard LUN before bringing the port online. 1728 */ 1729 status = xpt_create_path(&path, /*periph*/ NULL, 1730 bus_softc->path_id, CAM_TARGET_WILDCARD, 1731 CAM_LUN_WILDCARD); 1732 if (status != CAM_REQ_CMP) { 1733 printf("%s: unable to create path for wildcard periph\n", 1734 __func__); 1735 return; 1736 } 1737 1738 lun_softc = malloc(sizeof(*lun_softc), M_CTLFE, M_WAITOK | M_ZERO); 1739 1740 xpt_path_lock(path); 1741 periph = cam_periph_find(path, "ctl"); 1742 if (periph != NULL) { 1743 /* We've already got a periph, no need to alloc a new one. */ 1744 xpt_path_unlock(path); 1745 xpt_free_path(path); 1746 free(lun_softc, M_CTLFE); 1747 return; 1748 } 1749 lun_softc->parent_softc = bus_softc; 1750 lun_softc->flags |= CTLFE_LUN_WILDCARD; 1751 1752 status = cam_periph_alloc(ctlferegister, 1753 ctlfeoninvalidate, 1754 ctlfecleanup, 1755 ctlfestart, 1756 "ctl", 1757 CAM_PERIPH_BIO, 1758 path, 1759 ctlfeasync, 1760 0, 1761 lun_softc); 1762 1763 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1764 const struct cam_status_entry *entry; 1765 1766 entry = cam_fetch_status_entry(status); 1767 printf("%s: CAM error %s (%#x) returned from " 1768 "cam_periph_alloc()\n", __func__, (entry != NULL) ? 1769 entry->status_text : "Unknown", status); 1770 free(lun_softc, M_CTLFE); 1771 } 1772 1773 xpt_path_unlock(path); 1774 ctlfe_onoffline(arg, /*online*/ 1); 1775 xpt_free_path(path); 1776 } 1777 1778 static void 1779 ctlfe_offline(void *arg) 1780 { 1781 struct ctlfe_softc *bus_softc; 1782 struct cam_path *path; 1783 cam_status status; 1784 struct cam_periph *periph; 1785 1786 bus_softc = (struct ctlfe_softc *)arg; 1787 1788 ctlfe_onoffline(arg, /*online*/ 0); 1789 1790 /* 1791 * Disable the wildcard LUN for this port now that we have taken 1792 * the port offline. 1793 */ 1794 status = xpt_create_path(&path, /*periph*/ NULL, 1795 bus_softc->path_id, CAM_TARGET_WILDCARD, 1796 CAM_LUN_WILDCARD); 1797 if (status != CAM_REQ_CMP) { 1798 printf("%s: unable to create path for wildcard periph\n", 1799 __func__); 1800 return; 1801 } 1802 xpt_path_lock(path); 1803 if ((periph = cam_periph_find(path, "ctl")) != NULL) 1804 cam_periph_invalidate(periph); 1805 xpt_path_unlock(path); 1806 xpt_free_path(path); 1807 } 1808 1809 /* 1810 * This will get called to enable a LUN on every bus that is attached to 1811 * CTL. So we only need to create a path/periph for this particular bus. 1812 */ 1813 static int 1814 ctlfe_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1815 { 1816 struct ctlfe_softc *bus_softc; 1817 struct ctlfe_lun_softc *softc; 1818 struct cam_path *path; 1819 struct cam_periph *periph; 1820 cam_status status; 1821 1822 bus_softc = (struct ctlfe_softc *)arg; 1823 1824 status = xpt_create_path(&path, /*periph*/ NULL, 1825 bus_softc->path_id, 1826 targ_id.id, lun_id); 1827 /* XXX KDM need some way to return status to CTL here? */ 1828 if (status != CAM_REQ_CMP) { 1829 printf("%s: could not create path, status %#x\n", __func__, 1830 status); 1831 return (1); 1832 } 1833 1834 softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO); 1835 xpt_path_lock(path); 1836 periph = cam_periph_find(path, "ctl"); 1837 if (periph != NULL) { 1838 /* We've already got a periph, no need to alloc a new one. */ 1839 xpt_path_unlock(path); 1840 xpt_free_path(path); 1841 free(softc, M_CTLFE); 1842 return (0); 1843 } 1844 softc->parent_softc = bus_softc; 1845 1846 status = cam_periph_alloc(ctlferegister, 1847 ctlfeoninvalidate, 1848 ctlfecleanup, 1849 ctlfestart, 1850 "ctl", 1851 CAM_PERIPH_BIO, 1852 path, 1853 ctlfeasync, 1854 0, 1855 softc); 1856 1857 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1858 const struct cam_status_entry *entry; 1859 1860 entry = cam_fetch_status_entry(status); 1861 printf("%s: CAM error %s (%#x) returned from " 1862 "cam_periph_alloc()\n", __func__, (entry != NULL) ? 1863 entry->status_text : "Unknown", status); 1864 free(softc, M_CTLFE); 1865 } 1866 1867 xpt_path_unlock(path); 1868 xpt_free_path(path); 1869 return (0); 1870 } 1871 1872 /* 1873 * This will get called when the user removes a LUN to disable that LUN 1874 * on every bus that is attached to CTL. 1875 */ 1876 static int 1877 ctlfe_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1878 { 1879 struct ctlfe_softc *softc; 1880 struct ctlfe_lun_softc *lun_softc; 1881 1882 softc = (struct ctlfe_softc *)arg; 1883 1884 mtx_lock(&softc->lun_softc_mtx); 1885 STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) { 1886 struct cam_path *path; 1887 1888 path = lun_softc->periph->path; 1889 1890 if ((xpt_path_target_id(path) == targ_id.id) 1891 && (xpt_path_lun_id(path) == lun_id)) { 1892 break; 1893 } 1894 } 1895 if (lun_softc == NULL) { 1896 mtx_unlock(&softc->lun_softc_mtx); 1897 printf("%s: can't find target %d lun %d\n", __func__, 1898 targ_id.id, lun_id); 1899 return (1); 1900 } 1901 cam_periph_acquire(lun_softc->periph); 1902 mtx_unlock(&softc->lun_softc_mtx); 1903 1904 cam_periph_lock(lun_softc->periph); 1905 cam_periph_invalidate(lun_softc->periph); 1906 cam_periph_unlock(lun_softc->periph); 1907 cam_periph_release(lun_softc->periph); 1908 return (0); 1909 } 1910 1911 static void 1912 ctlfe_dump_sim(struct cam_sim *sim) 1913 { 1914 1915 printf("%s%d: max tagged openings: %d, max dev openings: %d\n", 1916 sim->sim_name, sim->unit_number, 1917 sim->max_tagged_dev_openings, sim->max_dev_openings); 1918 } 1919 1920 /* 1921 * Assumes that the SIM lock is held. 1922 */ 1923 static void 1924 ctlfe_dump_queue(struct ctlfe_lun_softc *softc) 1925 { 1926 struct ccb_hdr *hdr; 1927 struct cam_periph *periph; 1928 int num_items; 1929 1930 periph = softc->periph; 1931 num_items = 0; 1932 1933 TAILQ_FOREACH(hdr, &softc->work_queue, periph_links.tqe) { 1934 union ctl_io *io = hdr->io_ptr; 1935 1936 num_items++; 1937 1938 /* 1939 * Only regular SCSI I/O is put on the work 1940 * queue, so we can print sense here. There may be no 1941 * sense if it's no the queue for a DMA, but this serves to 1942 * print out the CCB as well. 1943 * 1944 * XXX KDM switch this over to scsi_sense_print() when 1945 * CTL is merged in with CAM. 1946 */ 1947 ctl_io_error_print(io, NULL); 1948 1949 /* 1950 * Print DMA status if we are DMA_QUEUED. 1951 */ 1952 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) { 1953 xpt_print(periph->path, 1954 "Total %u, Current %u, Resid %u\n", 1955 io->scsiio.kern_total_len, 1956 io->scsiio.kern_data_len, 1957 io->scsiio.kern_data_resid); 1958 } 1959 } 1960 1961 xpt_print(periph->path, "%d requests total waiting for CCBs\n", 1962 num_items); 1963 xpt_print(periph->path, "%ju CCBs outstanding (%ju allocated, %ju " 1964 "freed)\n", (uintmax_t)(softc->ccbs_alloced - 1965 softc->ccbs_freed), (uintmax_t)softc->ccbs_alloced, 1966 (uintmax_t)softc->ccbs_freed); 1967 xpt_print(periph->path, "%ju CTIOs outstanding (%ju sent, %ju " 1968 "returned\n", (uintmax_t)(softc->ctios_sent - 1969 softc->ctios_returned), softc->ctios_sent, 1970 softc->ctios_returned); 1971 } 1972 1973 /* 1974 * Datamove/done routine called by CTL. Put ourselves on the queue to 1975 * receive a CCB from CAM so we can queue the continue I/O request down 1976 * to the adapter. 1977 */ 1978 static void 1979 ctlfe_datamove(union ctl_io *io) 1980 { 1981 union ccb *ccb; 1982 struct cam_periph *periph; 1983 struct ctlfe_lun_softc *softc; 1984 1985 KASSERT(io->io_hdr.io_type == CTL_IO_SCSI, 1986 ("Unexpected io_type (%d) in ctlfe_datamove", io->io_hdr.io_type)); 1987 1988 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1989 periph = xpt_path_periph(ccb->ccb_h.path); 1990 cam_periph_lock(periph); 1991 softc = (struct ctlfe_lun_softc *)periph->softc; 1992 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED; 1993 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) 1994 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED; 1995 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h, 1996 periph_links.tqe); 1997 xpt_schedule(periph, /*priority*/ 1); 1998 cam_periph_unlock(periph); 1999 } 2000 2001 static void 2002 ctlfe_done(union ctl_io *io) 2003 { 2004 union ccb *ccb; 2005 struct cam_periph *periph; 2006 struct ctlfe_lun_softc *softc; 2007 2008 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2009 periph = xpt_path_periph(ccb->ccb_h.path); 2010 cam_periph_lock(periph); 2011 softc = (struct ctlfe_lun_softc *)periph->softc; 2012 2013 if (io->io_hdr.io_type == CTL_IO_TASK) { 2014 /* 2015 * Task management commands don't require any further 2016 * communication back to the adapter. Requeue the CCB 2017 * to the adapter, and free the CTL I/O. 2018 */ 2019 xpt_print(ccb->ccb_h.path, "%s: returning task I/O " 2020 "tag %#x seq %#x\n", __func__, 2021 ccb->cin1.tag_id, ccb->cin1.seq_id); 2022 /* 2023 * Send the notify acknowledge down to the SIM, to let it 2024 * know we processed the task management command. 2025 */ 2026 ccb->ccb_h.status = CAM_REQ_INPROG; 2027 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE; 2028 xpt_action(ccb); 2029 } else if (io->io_hdr.flags & CTL_FLAG_STATUS_SENT) { 2030 if (softc->flags & CTLFE_LUN_WILDCARD) { 2031 ccb->ccb_h.target_id = CAM_TARGET_WILDCARD; 2032 ccb->ccb_h.target_lun = CAM_LUN_WILDCARD; 2033 } 2034 if (periph->flags & CAM_PERIPH_INVALID) { 2035 ctlfe_free_ccb(periph, ccb); 2036 } else { 2037 softc->atios_sent++; 2038 cam_periph_unlock(periph); 2039 xpt_action(ccb); 2040 return; 2041 } 2042 } else { 2043 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED; 2044 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h, 2045 periph_links.tqe); 2046 xpt_schedule(periph, /*priority*/ 1); 2047 } 2048 2049 cam_periph_unlock(periph); 2050 } 2051 2052 static void 2053 ctlfe_dump(void) 2054 { 2055 struct ctlfe_softc *bus_softc; 2056 struct ctlfe_lun_softc *lun_softc; 2057 2058 STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) { 2059 ctlfe_dump_sim(bus_softc->sim); 2060 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links) 2061 ctlfe_dump_queue(lun_softc); 2062 } 2063 } 2064