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