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 void 232 ctlfeshutdown(void) 233 { 234 return; 235 } 236 237 int 238 ctlfeinitialize(void) 239 { 240 241 STAILQ_INIT(&ctlfe_softc_list); 242 mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF); 243 periphdriver_register(&ctlfe_driver); 244 return (0); 245 } 246 247 void 248 ctlfeperiphinit(void) 249 { 250 cam_status status; 251 252 status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED | 253 AC_CONTRACT, ctlfeasync, NULL, NULL); 254 if (status != CAM_REQ_CMP) { 255 printf("ctl: Failed to attach async callback due to CAM " 256 "status 0x%x!\n", status); 257 } 258 } 259 260 static void 261 ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 262 { 263 struct ctlfe_softc *softc; 264 265 #ifdef CTLFEDEBUG 266 printf("%s: entered\n", __func__); 267 #endif 268 269 mtx_lock(&ctlfe_list_mtx); 270 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) { 271 if (softc->path_id == xpt_path_path_id(path)) 272 break; 273 } 274 mtx_unlock(&ctlfe_list_mtx); 275 276 /* 277 * When a new path gets registered, and it is capable of target 278 * mode, go ahead and attach. Later on, we may need to be more 279 * selective, but for now this will be sufficient. 280 */ 281 switch (code) { 282 case AC_PATH_REGISTERED: { 283 struct ctl_port *port; 284 struct ccb_pathinq *cpi; 285 int retval; 286 287 cpi = (struct ccb_pathinq *)arg; 288 289 /* Don't attach if it doesn't support target mode */ 290 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) { 291 #ifdef CTLFEDEBUG 292 printf("%s: SIM %s%d doesn't support target mode\n", 293 __func__, cpi->dev_name, cpi->unit_number); 294 #endif 295 break; 296 } 297 298 if (softc != NULL) { 299 #ifdef CTLFEDEBUG 300 printf("%s: CTL port for CAM path %u already exists\n", 301 __func__, xpt_path_path_id(path)); 302 #endif 303 break; 304 } 305 306 #ifdef CTLFE_INIT_ENABLE 307 if (ctlfe_num_targets >= ctlfe_max_targets) { 308 union ccb *ccb; 309 310 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP, 311 M_NOWAIT | M_ZERO); 312 if (ccb == NULL) { 313 printf("%s: unable to malloc CCB!\n", __func__); 314 return; 315 } 316 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE); 317 318 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB; 319 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE; 320 ccb->knob.xport_specific.fc.role = KNOB_ROLE_INITIATOR; 321 322 xpt_action(ccb); 323 324 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 325 CAM_REQ_CMP) { 326 printf("%s: SIM %s%d (path id %d) initiator " 327 "enable failed with status %#x\n", 328 __func__, cpi->dev_name, 329 cpi->unit_number, cpi->ccb_h.path_id, 330 ccb->ccb_h.status); 331 } else { 332 printf("%s: SIM %s%d (path id %d) initiator " 333 "enable succeeded\n", 334 __func__, cpi->dev_name, 335 cpi->unit_number, cpi->ccb_h.path_id); 336 } 337 338 free(ccb, M_TEMP); 339 340 break; 341 } else { 342 ctlfe_num_targets++; 343 } 344 345 printf("%s: ctlfe_num_targets = %d\n", __func__, 346 ctlfe_num_targets); 347 #endif /* CTLFE_INIT_ENABLE */ 348 349 /* 350 * We're in an interrupt context here, so we have to 351 * use M_NOWAIT. Of course this means trouble if we 352 * can't allocate memory. 353 */ 354 softc = malloc(sizeof(*softc), M_CTLFE, M_NOWAIT | M_ZERO); 355 if (softc == NULL) { 356 printf("%s: unable to malloc %zd bytes for softc\n", 357 __func__, sizeof(*softc)); 358 return; 359 } 360 361 softc->path_id = cpi->ccb_h.path_id; 362 softc->sim = xpt_path_sim(path); 363 if (cpi->maxio != 0) 364 softc->maxio = cpi->maxio; 365 else 366 softc->maxio = DFLTPHYS; 367 mtx_init(&softc->lun_softc_mtx, "LUN softc mtx", NULL, MTX_DEF); 368 STAILQ_INIT(&softc->lun_softc_list); 369 370 port = &softc->port; 371 port->frontend = &ctlfe_frontend; 372 373 /* 374 * XXX KDM should we be more accurate here ? 375 */ 376 if (cpi->transport == XPORT_FC) 377 port->port_type = CTL_PORT_FC; 378 else if (cpi->transport == XPORT_SAS) 379 port->port_type = CTL_PORT_SAS; 380 else 381 port->port_type = CTL_PORT_SCSI; 382 383 /* XXX KDM what should the real number be here? */ 384 port->num_requested_ctl_io = 4096; 385 snprintf(softc->port_name, sizeof(softc->port_name), 386 "%s%d", cpi->dev_name, cpi->unit_number); 387 /* 388 * XXX KDM it would be nice to allocate storage in the 389 * frontend structure itself. 390 */ 391 port->port_name = softc->port_name; 392 port->physical_port = cpi->bus_id; 393 port->virtual_port = 0; 394 port->port_online = ctlfe_online; 395 port->port_offline = ctlfe_offline; 396 port->onoff_arg = softc; 397 port->lun_enable = ctlfe_lun_enable; 398 port->lun_disable = ctlfe_lun_disable; 399 port->targ_lun_arg = softc; 400 port->fe_datamove = ctlfe_datamove; 401 port->fe_done = ctlfe_done; 402 /* 403 * XXX KDM the path inquiry doesn't give us the maximum 404 * number of targets supported. 405 */ 406 port->max_targets = cpi->max_target; 407 port->max_target_id = cpi->max_target; 408 409 /* 410 * XXX KDM need to figure out whether we're the master or 411 * slave. 412 */ 413 #ifdef CTLFEDEBUG 414 printf("%s: calling ctl_port_register() for %s%d\n", 415 __func__, cpi->dev_name, cpi->unit_number); 416 #endif 417 retval = ctl_port_register(port); 418 if (retval != 0) { 419 printf("%s: ctl_port_register() failed with " 420 "error %d!\n", __func__, retval); 421 mtx_destroy(&softc->lun_softc_mtx); 422 free(softc, M_CTLFE); 423 break; 424 } else { 425 mtx_lock(&ctlfe_list_mtx); 426 STAILQ_INSERT_TAIL(&ctlfe_softc_list, softc, links); 427 mtx_unlock(&ctlfe_list_mtx); 428 } 429 430 break; 431 } 432 case AC_PATH_DEREGISTERED: { 433 434 if (softc != NULL) { 435 /* 436 * XXX KDM are we certain at this point that there 437 * are no outstanding commands for this frontend? 438 */ 439 mtx_lock(&ctlfe_list_mtx); 440 STAILQ_REMOVE(&ctlfe_softc_list, softc, ctlfe_softc, 441 links); 442 mtx_unlock(&ctlfe_list_mtx); 443 ctl_port_deregister(&softc->port); 444 mtx_destroy(&softc->lun_softc_mtx); 445 free(softc, M_CTLFE); 446 } 447 break; 448 } 449 case AC_CONTRACT: { 450 struct ac_contract *ac; 451 452 ac = (struct ac_contract *)arg; 453 454 switch (ac->contract_number) { 455 case AC_CONTRACT_DEV_CHG: { 456 struct ac_device_changed *dev_chg; 457 int retval; 458 459 dev_chg = (struct ac_device_changed *)ac->contract_data; 460 461 printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n", 462 __func__, dev_chg->wwpn, dev_chg->port, 463 xpt_path_path_id(path), dev_chg->target, 464 (dev_chg->arrived == 0) ? "left" : "arrived"); 465 466 if (softc == NULL) { 467 printf("%s: CTL port for CAM path %u not " 468 "found!\n", __func__, 469 xpt_path_path_id(path)); 470 break; 471 } 472 if (dev_chg->arrived != 0) { 473 retval = ctl_add_initiator(&softc->port, 474 dev_chg->target, dev_chg->wwpn, NULL); 475 } else { 476 retval = ctl_remove_initiator(&softc->port, 477 dev_chg->target); 478 } 479 480 if (retval < 0) { 481 printf("%s: could not %s port %d iid %u " 482 "WWPN %#jx!\n", __func__, 483 (dev_chg->arrived != 0) ? "add" : 484 "remove", softc->port.targ_port, 485 dev_chg->target, 486 (uintmax_t)dev_chg->wwpn); 487 } 488 break; 489 } 490 default: 491 printf("%s: unsupported contract number %ju\n", 492 __func__, (uintmax_t)ac->contract_number); 493 break; 494 } 495 break; 496 } 497 default: 498 break; 499 } 500 } 501 502 static cam_status 503 ctlferegister(struct cam_periph *periph, void *arg) 504 { 505 struct ctlfe_softc *bus_softc; 506 struct ctlfe_lun_softc *softc; 507 union ccb en_lun_ccb; 508 cam_status status; 509 int i; 510 511 softc = (struct ctlfe_lun_softc *)arg; 512 bus_softc = softc->parent_softc; 513 514 TAILQ_INIT(&softc->work_queue); 515 softc->periph = periph; 516 periph->softc = softc; 517 518 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE); 519 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN; 520 en_lun_ccb.cel.grp6_len = 0; 521 en_lun_ccb.cel.grp7_len = 0; 522 en_lun_ccb.cel.enable = 1; 523 xpt_action(&en_lun_ccb); 524 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK); 525 if (status != CAM_REQ_CMP) { 526 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n", 527 __func__, en_lun_ccb.ccb_h.status); 528 return (status); 529 } 530 531 status = CAM_REQ_CMP; 532 533 for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) { 534 union ccb *new_ccb; 535 union ctl_io *new_io; 536 537 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE, 538 M_ZERO|M_NOWAIT); 539 if (new_ccb == NULL) { 540 status = CAM_RESRC_UNAVAIL; 541 break; 542 } 543 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref); 544 if (new_io == NULL) { 545 free(new_ccb, M_CTLFE); 546 status = CAM_RESRC_UNAVAIL; 547 break; 548 } 549 new_ccb->ccb_h.io_ptr = new_io; 550 551 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1); 552 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO; 553 new_ccb->ccb_h.cbfcnp = ctlfedone; 554 new_ccb->ccb_h.flags |= CAM_UNLOCKED; 555 xpt_action(new_ccb); 556 softc->atios_sent++; 557 status = new_ccb->ccb_h.status; 558 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 559 ctl_free_io(new_io); 560 free(new_ccb, M_CTLFE); 561 break; 562 } 563 } 564 565 status = cam_periph_acquire(periph); 566 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 567 xpt_print(periph->path, "%s: could not acquire reference " 568 "count, status = %#x\n", __func__, status); 569 return (status); 570 } 571 572 if (i == 0) { 573 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, " 574 "status 0x%x\n", __func__, status); 575 return (CAM_REQ_CMP_ERR); 576 } 577 578 for (i = 0; i < CTLFE_IN_PER_LUN; i++) { 579 union ccb *new_ccb; 580 union ctl_io *new_io; 581 582 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE, 583 M_ZERO|M_NOWAIT); 584 if (new_ccb == NULL) { 585 status = CAM_RESRC_UNAVAIL; 586 break; 587 } 588 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref); 589 if (new_io == NULL) { 590 free(new_ccb, M_CTLFE); 591 status = CAM_RESRC_UNAVAIL; 592 break; 593 } 594 new_ccb->ccb_h.io_ptr = new_io; 595 596 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1); 597 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY; 598 new_ccb->ccb_h.cbfcnp = ctlfedone; 599 new_ccb->ccb_h.flags |= CAM_UNLOCKED; 600 xpt_action(new_ccb); 601 softc->inots_sent++; 602 status = new_ccb->ccb_h.status; 603 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 604 /* 605 * Note that we don't free the CCB here. If the 606 * status is not CAM_REQ_INPROG, then we're 607 * probably talking to a SIM that says it is 608 * target-capable but doesn't support the 609 * XPT_IMMEDIATE_NOTIFY CCB. i.e. it supports the 610 * older API. In that case, it'll call xpt_done() 611 * on the CCB, and we need to free it in our done 612 * routine as a result. 613 */ 614 break; 615 } 616 } 617 if ((i == 0) 618 || (status != CAM_REQ_INPROG)) { 619 xpt_print(periph->path, "%s: could not allocate immediate " 620 "notify CCBs, status 0x%x\n", __func__, status); 621 return (CAM_REQ_CMP_ERR); 622 } 623 mtx_lock(&bus_softc->lun_softc_mtx); 624 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links); 625 mtx_unlock(&bus_softc->lun_softc_mtx); 626 return (CAM_REQ_CMP); 627 } 628 629 static void 630 ctlfeoninvalidate(struct cam_periph *periph) 631 { 632 union ccb en_lun_ccb; 633 cam_status status; 634 struct ctlfe_softc *bus_softc; 635 struct ctlfe_lun_softc *softc; 636 637 softc = (struct ctlfe_lun_softc *)periph->softc; 638 639 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE); 640 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN; 641 en_lun_ccb.cel.grp6_len = 0; 642 en_lun_ccb.cel.grp7_len = 0; 643 en_lun_ccb.cel.enable = 0; 644 xpt_action(&en_lun_ccb); 645 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK); 646 if (status != CAM_REQ_CMP) { 647 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n", 648 __func__, en_lun_ccb.ccb_h.status); 649 /* 650 * XXX KDM what do we do now? 651 */ 652 } 653 xpt_print(periph->path, "LUN removed, %ju ATIOs outstanding, %ju " 654 "INOTs outstanding, %d refs\n", softc->atios_sent - 655 softc->atios_returned, softc->inots_sent - 656 softc->inots_returned, periph->refcount); 657 658 bus_softc = softc->parent_softc; 659 mtx_lock(&bus_softc->lun_softc_mtx); 660 STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links); 661 mtx_unlock(&bus_softc->lun_softc_mtx); 662 } 663 664 static void 665 ctlfecleanup(struct cam_periph *periph) 666 { 667 struct ctlfe_lun_softc *softc; 668 669 xpt_print(periph->path, "%s: Called\n", __func__); 670 671 softc = (struct ctlfe_lun_softc *)periph->softc; 672 673 /* 674 * XXX KDM is there anything else that needs to be done here? 675 */ 676 677 free(softc, M_CTLFE); 678 } 679 680 static void 681 ctlfedata(struct ctlfe_lun_softc *softc, union ctl_io *io, 682 ccb_flags *flags, uint8_t **data_ptr, uint32_t *dxfer_len, 683 u_int16_t *sglist_cnt) 684 { 685 struct ctlfe_softc *bus_softc; 686 struct ctlfe_lun_cmd_info *cmd_info; 687 struct ctl_sg_entry *ctl_sglist; 688 bus_dma_segment_t *cam_sglist; 689 size_t off; 690 int i, idx; 691 692 cmd_info = (struct ctlfe_lun_cmd_info *)io->io_hdr.port_priv; 693 bus_softc = softc->parent_softc; 694 695 /* 696 * Set the direction, relative to the initiator. 697 */ 698 *flags &= ~CAM_DIR_MASK; 699 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 700 *flags |= CAM_DIR_IN; 701 else 702 *flags |= CAM_DIR_OUT; 703 704 *flags &= ~CAM_DATA_MASK; 705 idx = cmd_info->cur_transfer_index; 706 off = cmd_info->cur_transfer_off; 707 cmd_info->flags &= ~CTLFE_CMD_PIECEWISE; 708 if (io->scsiio.kern_sg_entries == 0) { 709 /* No S/G list. */ 710 *data_ptr = io->scsiio.kern_data_ptr + off; 711 if (io->scsiio.kern_data_len - off <= bus_softc->maxio) { 712 *dxfer_len = io->scsiio.kern_data_len - off; 713 } else { 714 *dxfer_len = bus_softc->maxio; 715 cmd_info->cur_transfer_index = -1; 716 cmd_info->cur_transfer_off = bus_softc->maxio; 717 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 718 } 719 *sglist_cnt = 0; 720 721 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) 722 *flags |= CAM_DATA_PADDR; 723 else 724 *flags |= CAM_DATA_VADDR; 725 } else { 726 /* S/G list with physical or virtual pointers. */ 727 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 728 cam_sglist = cmd_info->cam_sglist; 729 *dxfer_len = 0; 730 for (i = 0; i < io->scsiio.kern_sg_entries - idx; i++) { 731 cam_sglist[i].ds_addr = (bus_addr_t)ctl_sglist[i + idx].addr + off; 732 if (ctl_sglist[i + idx].len - off <= bus_softc->maxio - *dxfer_len) { 733 cam_sglist[i].ds_len = ctl_sglist[idx + i].len - off; 734 *dxfer_len += cam_sglist[i].ds_len; 735 } else { 736 cam_sglist[i].ds_len = bus_softc->maxio - *dxfer_len; 737 cmd_info->cur_transfer_index = idx + i; 738 cmd_info->cur_transfer_off = cam_sglist[i].ds_len + off; 739 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 740 *dxfer_len += cam_sglist[i].ds_len; 741 if (ctl_sglist[i].len != 0) 742 i++; 743 break; 744 } 745 if (i == (CTLFE_MAX_SEGS - 1) && 746 idx + i < (io->scsiio.kern_sg_entries - 1)) { 747 cmd_info->cur_transfer_index = idx + i + 1; 748 cmd_info->cur_transfer_off = 0; 749 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 750 i++; 751 break; 752 } 753 off = 0; 754 } 755 *sglist_cnt = i; 756 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) 757 *flags |= CAM_DATA_SG_PADDR; 758 else 759 *flags |= CAM_DATA_SG; 760 *data_ptr = (uint8_t *)cam_sglist; 761 } 762 } 763 764 static void 765 ctlfestart(struct cam_periph *periph, union ccb *start_ccb) 766 { 767 struct ctlfe_lun_softc *softc; 768 struct ctlfe_lun_cmd_info *cmd_info; 769 struct ccb_hdr *ccb_h; 770 struct ccb_accept_tio *atio; 771 struct ccb_scsiio *csio; 772 uint8_t *data_ptr; 773 uint32_t dxfer_len; 774 ccb_flags flags; 775 union ctl_io *io; 776 uint8_t scsi_status; 777 778 softc = (struct ctlfe_lun_softc *)periph->softc; 779 softc->ccbs_alloced++; 780 781 ccb_h = TAILQ_FIRST(&softc->work_queue); 782 if (ccb_h == NULL) { 783 softc->ccbs_freed++; 784 xpt_release_ccb(start_ccb); 785 return; 786 } 787 788 /* Take the ATIO off the work queue */ 789 TAILQ_REMOVE(&softc->work_queue, ccb_h, periph_links.tqe); 790 atio = (struct ccb_accept_tio *)ccb_h; 791 io = (union ctl_io *)ccb_h->io_ptr; 792 csio = &start_ccb->csio; 793 794 flags = atio->ccb_h.flags & 795 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK); 796 cmd_info = (struct ctlfe_lun_cmd_info *)io->io_hdr.port_priv; 797 cmd_info->cur_transfer_index = 0; 798 cmd_info->cur_transfer_off = 0; 799 cmd_info->flags = 0; 800 801 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) { 802 /* 803 * Datamove call, we need to setup the S/G list. 804 */ 805 scsi_status = 0; 806 csio->cdb_len = atio->cdb_len; 807 ctlfedata(softc, io, &flags, &data_ptr, &dxfer_len, 808 &csio->sglist_cnt); 809 io->scsiio.ext_data_filled += dxfer_len; 810 if (io->scsiio.ext_data_filled > io->scsiio.kern_total_len) { 811 xpt_print(periph->path, "%s: tag 0x%04x " 812 "fill len %u > total %u\n", 813 __func__, io->scsiio.tag_num, 814 io->scsiio.ext_data_filled, 815 io->scsiio.kern_total_len); 816 } 817 } else { 818 /* 819 * We're done, send status back. 820 */ 821 if ((io->io_hdr.flags & CTL_FLAG_ABORT) && 822 (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) { 823 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED; 824 825 /* 826 * If this command was aborted, we don't 827 * need to send status back to the SIM. 828 * Just free the CTIO and ctl_io, and 829 * recycle the ATIO back to the SIM. 830 */ 831 xpt_print(periph->path, "%s: aborted " 832 "command 0x%04x discarded\n", 833 __func__, io->scsiio.tag_num); 834 /* 835 * For a wildcard attachment, commands can 836 * come in with a specific target/lun. Reset 837 * the target and LUN fields back to the 838 * wildcard values before we send them back 839 * down to the SIM. The SIM has a wildcard 840 * LUN enabled, not whatever target/lun 841 * these happened to be. 842 */ 843 if (softc->flags & CTLFE_LUN_WILDCARD) { 844 atio->ccb_h.target_id = CAM_TARGET_WILDCARD; 845 atio->ccb_h.target_lun = CAM_LUN_WILDCARD; 846 } 847 848 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) { 849 cam_release_devq(periph->path, 850 /*relsim_flags*/0, 851 /*reduction*/0, 852 /*timeout*/0, 853 /*getcount_only*/0); 854 atio->ccb_h.status &= ~CAM_DEV_QFRZN; 855 } 856 857 if (atio->ccb_h.func_code != XPT_ACCEPT_TARGET_IO) { 858 xpt_print(periph->path, "%s: func_code " 859 "is %#x\n", __func__, 860 atio->ccb_h.func_code); 861 } 862 start_ccb->ccb_h.func_code = XPT_ABORT; 863 start_ccb->cab.abort_ccb = (union ccb *)atio; 864 865 /* Tell the SIM that we've aborted this ATIO */ 866 xpt_action(start_ccb); 867 softc->ccbs_freed++; 868 xpt_release_ccb(start_ccb); 869 870 /* 871 * Send the ATIO back down to the SIM. 872 */ 873 xpt_action((union ccb *)atio); 874 softc->atios_sent++; 875 876 /* 877 * If we still have work to do, ask for 878 * another CCB. Otherwise, deactivate our 879 * callout. 880 */ 881 if (!TAILQ_EMPTY(&softc->work_queue)) 882 xpt_schedule(periph, /*priority*/ 1); 883 return; 884 } 885 data_ptr = NULL; 886 dxfer_len = 0; 887 csio->sglist_cnt = 0; 888 scsi_status = 0; 889 } 890 if ((io->io_hdr.flags & CTL_FLAG_STATUS_QUEUED) && 891 (cmd_info->flags & CTLFE_CMD_PIECEWISE) == 0 && 892 ((io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) == 0 || 893 io->io_hdr.status == CTL_SUCCESS)) { 894 flags |= CAM_SEND_STATUS; 895 scsi_status = io->scsiio.scsi_status; 896 csio->sense_len = io->scsiio.sense_len; 897 #ifdef CTLFEDEBUG 898 printf("%s: tag %04x status %x\n", __func__, 899 atio->tag_id, io->io_hdr.status); 900 #endif 901 if (csio->sense_len != 0) { 902 csio->sense_data = io->scsiio.sense_data; 903 flags |= CAM_SEND_SENSE; 904 } else if (scsi_status == SCSI_STATUS_CHECK_COND) { 905 xpt_print(periph->path, "%s: check condition " 906 "with no sense\n", __func__); 907 } 908 } 909 910 #ifdef CTLFEDEBUG 911 printf("%s: %s: tag %04x flags %x ptr %p len %u\n", __func__, 912 (flags & CAM_SEND_STATUS) ? "done" : "datamove", 913 atio->tag_id, flags, data_ptr, dxfer_len); 914 #endif 915 916 /* 917 * Valid combinations: 918 * - CAM_SEND_STATUS, CAM_DATA_SG = 0, dxfer_len = 0, 919 * sglist_cnt = 0 920 * - CAM_SEND_STATUS = 0, CAM_DATA_SG = 0, dxfer_len != 0, 921 * sglist_cnt = 0 922 * - CAM_SEND_STATUS = 0, CAM_DATA_SG, dxfer_len != 0, 923 * sglist_cnt != 0 924 */ 925 #ifdef CTLFEDEBUG 926 if (((flags & CAM_SEND_STATUS) 927 && (((flags & CAM_DATA_SG) != 0) 928 || (dxfer_len != 0) 929 || (csio->sglist_cnt != 0))) 930 || (((flags & CAM_SEND_STATUS) == 0) 931 && (dxfer_len == 0)) 932 || ((flags & CAM_DATA_SG) 933 && (csio->sglist_cnt == 0)) 934 || (((flags & CAM_DATA_SG) == 0) 935 && (csio->sglist_cnt != 0))) { 936 printf("%s: tag %04x cdb %02x flags %#x dxfer_len " 937 "%d sg %u\n", __func__, atio->tag_id, 938 atio->cdb_io.cdb_bytes[0], flags, dxfer_len, 939 csio->sglist_cnt); 940 printf("%s: tag %04x io status %#x\n", __func__, 941 atio->tag_id, io->io_hdr.status); 942 } 943 #endif 944 cam_fill_ctio(csio, 945 /*retries*/ 2, 946 ctlfedone, 947 flags, 948 (flags & CAM_TAG_ACTION_VALID) ? MSG_SIMPLE_Q_TAG : 0, 949 atio->tag_id, 950 atio->init_id, 951 scsi_status, 952 /*data_ptr*/ data_ptr, 953 /*dxfer_len*/ dxfer_len, 954 /*timeout*/ 5 * 1000); 955 start_ccb->ccb_h.flags |= CAM_UNLOCKED; 956 start_ccb->ccb_h.ccb_atio = atio; 957 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 958 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG; 959 io->io_hdr.flags &= ~(CTL_FLAG_DMA_QUEUED | CTL_FLAG_STATUS_QUEUED); 960 961 softc->ctios_sent++; 962 963 cam_periph_unlock(periph); 964 xpt_action(start_ccb); 965 cam_periph_lock(periph); 966 967 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) { 968 cam_release_devq(periph->path, 969 /*relsim_flags*/0, 970 /*reduction*/0, 971 /*timeout*/0, 972 /*getcount_only*/0); 973 atio->ccb_h.status &= ~CAM_DEV_QFRZN; 974 } 975 976 /* 977 * If we still have work to do, ask for another CCB. 978 */ 979 if (!TAILQ_EMPTY(&softc->work_queue)) 980 xpt_schedule(periph, /*priority*/ 1); 981 } 982 983 static void 984 ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb) 985 { 986 struct ctlfe_lun_softc *softc; 987 988 softc = (struct ctlfe_lun_softc *)periph->softc; 989 990 switch (ccb->ccb_h.func_code) { 991 case XPT_ACCEPT_TARGET_IO: 992 softc->atios_returned++; 993 break; 994 case XPT_IMMEDIATE_NOTIFY: 995 case XPT_NOTIFY_ACKNOWLEDGE: 996 softc->inots_returned++; 997 break; 998 default: 999 break; 1000 } 1001 1002 ctl_free_io(ccb->ccb_h.io_ptr); 1003 free(ccb, M_CTLFE); 1004 1005 KASSERT(softc->atios_returned <= softc->atios_sent, ("%s: " 1006 "atios_returned %ju > atios_sent %ju", __func__, 1007 softc->atios_returned, softc->atios_sent)); 1008 KASSERT(softc->inots_returned <= softc->inots_sent, ("%s: " 1009 "inots_returned %ju > inots_sent %ju", __func__, 1010 softc->inots_returned, softc->inots_sent)); 1011 1012 /* 1013 * If we have received all of our CCBs, we can release our 1014 * reference on the peripheral driver. It will probably go away 1015 * now. 1016 */ 1017 if ((softc->atios_returned == softc->atios_sent) 1018 && (softc->inots_returned == softc->inots_sent)) { 1019 cam_periph_release_locked(periph); 1020 } 1021 } 1022 1023 static int 1024 ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset) 1025 { 1026 uint64_t lba; 1027 uint32_t num_blocks, nbc; 1028 uint8_t *cmdbyt = (atio->ccb_h.flags & CAM_CDB_POINTER)? 1029 atio->cdb_io.cdb_ptr : atio->cdb_io.cdb_bytes; 1030 1031 nbc = offset >> 9; /* ASSUMING 512 BYTE BLOCKS */ 1032 1033 switch (cmdbyt[0]) { 1034 case READ_6: 1035 case WRITE_6: 1036 { 1037 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt; 1038 lba = scsi_3btoul(cdb->addr); 1039 lba &= 0x1fffff; 1040 num_blocks = cdb->length; 1041 if (num_blocks == 0) 1042 num_blocks = 256; 1043 lba += nbc; 1044 num_blocks -= nbc; 1045 scsi_ulto3b(lba, cdb->addr); 1046 cdb->length = num_blocks; 1047 break; 1048 } 1049 case READ_10: 1050 case WRITE_10: 1051 { 1052 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt; 1053 lba = scsi_4btoul(cdb->addr); 1054 num_blocks = scsi_2btoul(cdb->length); 1055 lba += nbc; 1056 num_blocks -= nbc; 1057 scsi_ulto4b(lba, cdb->addr); 1058 scsi_ulto2b(num_blocks, cdb->length); 1059 break; 1060 } 1061 case READ_12: 1062 case WRITE_12: 1063 { 1064 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt; 1065 lba = scsi_4btoul(cdb->addr); 1066 num_blocks = scsi_4btoul(cdb->length); 1067 lba += nbc; 1068 num_blocks -= nbc; 1069 scsi_ulto4b(lba, cdb->addr); 1070 scsi_ulto4b(num_blocks, cdb->length); 1071 break; 1072 } 1073 case READ_16: 1074 case WRITE_16: 1075 case WRITE_ATOMIC_16: 1076 { 1077 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt; 1078 lba = scsi_8btou64(cdb->addr); 1079 num_blocks = scsi_4btoul(cdb->length); 1080 lba += nbc; 1081 num_blocks -= nbc; 1082 scsi_u64to8b(lba, cdb->addr); 1083 scsi_ulto4b(num_blocks, cdb->length); 1084 break; 1085 } 1086 default: 1087 return -1; 1088 } 1089 return (0); 1090 } 1091 1092 static void 1093 ctlfedone(struct cam_periph *periph, union ccb *done_ccb) 1094 { 1095 struct ctlfe_lun_softc *softc; 1096 struct ctlfe_softc *bus_softc; 1097 struct ccb_accept_tio *atio = NULL; 1098 union ctl_io *io = NULL; 1099 struct mtx *mtx; 1100 1101 KASSERT((done_ccb->ccb_h.flags & CAM_UNLOCKED) != 0, 1102 ("CCB in ctlfedone() without CAM_UNLOCKED flag")); 1103 #ifdef CTLFE_DEBUG 1104 printf("%s: entered, func_code = %#x\n", __func__, 1105 done_ccb->ccb_h.func_code); 1106 #endif 1107 1108 softc = (struct ctlfe_lun_softc *)periph->softc; 1109 bus_softc = softc->parent_softc; 1110 mtx = cam_periph_mtx(periph); 1111 mtx_lock(mtx); 1112 1113 /* 1114 * If the peripheral is invalid, ATIOs and immediate notify CCBs 1115 * need to be freed. Most of the ATIOs and INOTs that come back 1116 * will be CCBs that are being returned from the SIM as a result of 1117 * our disabling the LUN. 1118 * 1119 * Other CCB types are handled in their respective cases below. 1120 */ 1121 if (periph->flags & CAM_PERIPH_INVALID) { 1122 switch (done_ccb->ccb_h.func_code) { 1123 case XPT_ACCEPT_TARGET_IO: 1124 case XPT_IMMEDIATE_NOTIFY: 1125 case XPT_NOTIFY_ACKNOWLEDGE: 1126 ctlfe_free_ccb(periph, done_ccb); 1127 goto out; 1128 default: 1129 break; 1130 } 1131 1132 } 1133 switch (done_ccb->ccb_h.func_code) { 1134 case XPT_ACCEPT_TARGET_IO: { 1135 1136 atio = &done_ccb->atio; 1137 1138 softc->atios_returned++; 1139 1140 resubmit: 1141 /* 1142 * Allocate a ctl_io, pass it to CTL, and wait for the 1143 * datamove or done. 1144 */ 1145 mtx_unlock(mtx); 1146 io = done_ccb->ccb_h.io_ptr; 1147 ctl_zero_io(io); 1148 1149 /* Save pointers on both sides */ 1150 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = done_ccb; 1151 done_ccb->ccb_h.io_ptr = io; 1152 1153 /* 1154 * Only SCSI I/O comes down this path, resets, etc. come 1155 * down the immediate notify path below. 1156 */ 1157 io->io_hdr.io_type = CTL_IO_SCSI; 1158 io->io_hdr.nexus.initid.id = atio->init_id; 1159 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port; 1160 io->io_hdr.nexus.targ_target.id = atio->ccb_h.target_id; 1161 io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun; 1162 io->scsiio.tag_num = atio->tag_id; 1163 switch (atio->tag_action) { 1164 case CAM_TAG_ACTION_NONE: 1165 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 1166 break; 1167 case MSG_SIMPLE_TASK: 1168 io->scsiio.tag_type = CTL_TAG_SIMPLE; 1169 break; 1170 case MSG_HEAD_OF_QUEUE_TASK: 1171 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 1172 break; 1173 case MSG_ORDERED_TASK: 1174 io->scsiio.tag_type = CTL_TAG_ORDERED; 1175 break; 1176 case MSG_ACA_TASK: 1177 io->scsiio.tag_type = CTL_TAG_ACA; 1178 break; 1179 default: 1180 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 1181 printf("%s: unhandled tag type %#x!!\n", __func__, 1182 atio->tag_action); 1183 break; 1184 } 1185 if (atio->cdb_len > sizeof(io->scsiio.cdb)) { 1186 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 1187 __func__, atio->cdb_len, sizeof(io->scsiio.cdb)); 1188 } 1189 io->scsiio.cdb_len = min(atio->cdb_len, sizeof(io->scsiio.cdb)); 1190 bcopy(atio->cdb_io.cdb_bytes, io->scsiio.cdb, 1191 io->scsiio.cdb_len); 1192 1193 #ifdef CTLFEDEBUG 1194 printf("%s: %ju:%d:%ju:%d: tag %04x CDB %02x\n", __func__, 1195 (uintmax_t)io->io_hdr.nexus.initid.id, 1196 io->io_hdr.nexus.targ_port, 1197 (uintmax_t)io->io_hdr.nexus.targ_target.id, 1198 io->io_hdr.nexus.targ_lun, 1199 io->scsiio.tag_num, io->scsiio.cdb[0]); 1200 #endif 1201 1202 ctl_queue(io); 1203 return; 1204 } 1205 case XPT_CONT_TARGET_IO: { 1206 int srr = 0; 1207 uint32_t srr_off = 0; 1208 1209 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio; 1210 io = (union ctl_io *)atio->ccb_h.io_ptr; 1211 1212 softc->ctios_returned++; 1213 #ifdef CTLFEDEBUG 1214 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n", 1215 __func__, atio->tag_id, done_ccb->ccb_h.flags); 1216 #endif 1217 /* 1218 * Handle SRR case were the data pointer is pushed back hack 1219 */ 1220 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV 1221 && done_ccb->csio.msg_ptr != NULL 1222 && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED 1223 && done_ccb->csio.msg_ptr[1] == 5 1224 && done_ccb->csio.msg_ptr[2] == 0) { 1225 srr = 1; 1226 srr_off = 1227 (done_ccb->csio.msg_ptr[3] << 24) 1228 | (done_ccb->csio.msg_ptr[4] << 16) 1229 | (done_ccb->csio.msg_ptr[5] << 8) 1230 | (done_ccb->csio.msg_ptr[6]); 1231 } 1232 1233 if (srr && (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) { 1234 /* 1235 * If status was being sent, the back end data is now 1236 * history. Hack it up and resubmit a new command with 1237 * the CDB adjusted. If the SIM does the right thing, 1238 * all of the resid math should work. 1239 */ 1240 softc->ccbs_freed++; 1241 xpt_release_ccb(done_ccb); 1242 if (ctlfe_adjust_cdb(atio, srr_off) == 0) { 1243 done_ccb = (union ccb *)atio; 1244 goto resubmit; 1245 } 1246 /* 1247 * Fall through to doom.... 1248 */ 1249 } else if (srr) { 1250 /* 1251 * If we have an srr and we're still sending data, we 1252 * should be able to adjust offsets and cycle again. 1253 */ 1254 io->scsiio.kern_rel_offset = 1255 io->scsiio.ext_data_filled = srr_off; 1256 io->scsiio.ext_data_len = io->scsiio.kern_total_len - 1257 io->scsiio.kern_rel_offset; 1258 softc->ccbs_freed++; 1259 io->scsiio.io_hdr.status = CTL_STATUS_NONE; 1260 xpt_release_ccb(done_ccb); 1261 TAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h, 1262 periph_links.tqe); 1263 xpt_schedule(periph, /*priority*/ 1); 1264 break; 1265 } 1266 1267 if ((done_ccb->ccb_h.flags & CAM_SEND_STATUS) && 1268 (done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) 1269 io->io_hdr.flags |= CTL_FLAG_STATUS_SENT; 1270 1271 /* 1272 * If we were sending status back to the initiator, free up 1273 * resources. If we were doing a datamove, call the 1274 * datamove done routine. 1275 */ 1276 if ((io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) { 1277 softc->ccbs_freed++; 1278 xpt_release_ccb(done_ccb); 1279 /* 1280 * For a wildcard attachment, commands can come in 1281 * with a specific target/lun. Reset the target 1282 * and LUN fields back to the wildcard values before 1283 * we send them back down to the SIM. The SIM has 1284 * a wildcard LUN enabled, not whatever target/lun 1285 * these happened to be. 1286 */ 1287 if (softc->flags & CTLFE_LUN_WILDCARD) { 1288 atio->ccb_h.target_id = CAM_TARGET_WILDCARD; 1289 atio->ccb_h.target_lun = CAM_LUN_WILDCARD; 1290 } 1291 if (periph->flags & CAM_PERIPH_INVALID) { 1292 ctlfe_free_ccb(periph, (union ccb *)atio); 1293 } else { 1294 softc->atios_sent++; 1295 mtx_unlock(mtx); 1296 xpt_action((union ccb *)atio); 1297 return; 1298 } 1299 } else { 1300 struct ctlfe_lun_cmd_info *cmd_info; 1301 struct ccb_scsiio *csio; 1302 1303 csio = &done_ccb->csio; 1304 cmd_info = (struct ctlfe_lun_cmd_info *) 1305 io->io_hdr.port_priv; 1306 1307 io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG; 1308 1309 io->scsiio.ext_data_len += csio->dxfer_len; 1310 if (io->scsiio.ext_data_len > 1311 io->scsiio.kern_total_len) { 1312 xpt_print(periph->path, "%s: tag 0x%04x " 1313 "done len %u > total %u sent %u\n", 1314 __func__, io->scsiio.tag_num, 1315 io->scsiio.ext_data_len, 1316 io->scsiio.kern_total_len, 1317 io->scsiio.ext_data_filled); 1318 } 1319 /* 1320 * Translate CAM status to CTL status. Success 1321 * does not change the overall, ctl_io status. In 1322 * that case we just set port_status to 0. If we 1323 * have a failure, though, set a data phase error 1324 * for the overall ctl_io. 1325 */ 1326 switch (done_ccb->ccb_h.status & CAM_STATUS_MASK) { 1327 case CAM_REQ_CMP: 1328 io->io_hdr.port_status = 0; 1329 break; 1330 default: 1331 /* 1332 * XXX KDM we probably need to figure out a 1333 * standard set of errors that the SIM 1334 * drivers should return in the event of a 1335 * data transfer failure. A data phase 1336 * error will at least point the user to a 1337 * data transfer error of some sort. 1338 * Hopefully the SIM printed out some 1339 * additional information to give the user 1340 * a clue what happened. 1341 */ 1342 io->io_hdr.port_status = 0xbad1; 1343 ctl_set_data_phase_error(&io->scsiio); 1344 /* 1345 * XXX KDM figure out residual. 1346 */ 1347 break; 1348 } 1349 /* 1350 * If we had to break this S/G list into multiple 1351 * pieces, figure out where we are in the list, and 1352 * continue sending pieces if necessary. 1353 */ 1354 if ((cmd_info->flags & CTLFE_CMD_PIECEWISE) 1355 && (io->io_hdr.port_status == 0)) { 1356 ccb_flags flags; 1357 uint8_t scsi_status; 1358 uint8_t *data_ptr; 1359 uint32_t dxfer_len; 1360 1361 flags = atio->ccb_h.flags & 1362 (CAM_DIS_DISCONNECT| 1363 CAM_TAG_ACTION_VALID); 1364 1365 ctlfedata(softc, io, &flags, &data_ptr, 1366 &dxfer_len, &csio->sglist_cnt); 1367 1368 scsi_status = 0; 1369 1370 if (((flags & CAM_SEND_STATUS) == 0) 1371 && (dxfer_len == 0)) { 1372 printf("%s: tag %04x no status or " 1373 "len cdb = %02x\n", __func__, 1374 atio->tag_id, 1375 atio->cdb_io.cdb_bytes[0]); 1376 printf("%s: tag %04x io status %#x\n", 1377 __func__, atio->tag_id, 1378 io->io_hdr.status); 1379 } 1380 1381 cam_fill_ctio(csio, 1382 /*retries*/ 2, 1383 ctlfedone, 1384 flags, 1385 (flags & CAM_TAG_ACTION_VALID) ? 1386 MSG_SIMPLE_Q_TAG : 0, 1387 atio->tag_id, 1388 atio->init_id, 1389 scsi_status, 1390 /*data_ptr*/ data_ptr, 1391 /*dxfer_len*/ dxfer_len, 1392 /*timeout*/ 5 * 1000); 1393 1394 csio->ccb_h.flags |= CAM_UNLOCKED; 1395 csio->resid = 0; 1396 csio->ccb_h.ccb_atio = atio; 1397 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG; 1398 softc->ctios_sent++; 1399 mtx_unlock(mtx); 1400 xpt_action((union ccb *)csio); 1401 } else { 1402 /* 1403 * Release the CTIO. The ATIO will be sent back 1404 * down to the SIM once we send status. 1405 */ 1406 softc->ccbs_freed++; 1407 xpt_release_ccb(done_ccb); 1408 mtx_unlock(mtx); 1409 1410 /* Call the backend move done callback */ 1411 io->scsiio.be_move_done(io); 1412 } 1413 return; 1414 } 1415 break; 1416 } 1417 case XPT_IMMEDIATE_NOTIFY: { 1418 union ctl_io *io; 1419 struct ccb_immediate_notify *inot; 1420 cam_status status; 1421 int frozen, send_ctl_io; 1422 1423 inot = &done_ccb->cin1; 1424 1425 softc->inots_returned++; 1426 1427 frozen = (done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0; 1428 1429 printf("%s: got XPT_IMMEDIATE_NOTIFY status %#x tag %#x " 1430 "seq %#x\n", __func__, inot->ccb_h.status, 1431 inot->tag_id, inot->seq_id); 1432 1433 io = done_ccb->ccb_h.io_ptr; 1434 ctl_zero_io(io); 1435 1436 send_ctl_io = 1; 1437 1438 io->io_hdr.io_type = CTL_IO_TASK; 1439 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr =done_ccb; 1440 inot->ccb_h.io_ptr = io; 1441 io->io_hdr.nexus.initid.id = inot->initiator_id; 1442 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port; 1443 io->io_hdr.nexus.targ_target.id = inot->ccb_h.target_id; 1444 io->io_hdr.nexus.targ_lun = inot->ccb_h.target_lun; 1445 /* XXX KDM should this be the tag_id? */ 1446 io->taskio.tag_num = inot->seq_id; 1447 1448 status = inot->ccb_h.status & CAM_STATUS_MASK; 1449 switch (status) { 1450 case CAM_SCSI_BUS_RESET: 1451 io->taskio.task_action = CTL_TASK_BUS_RESET; 1452 break; 1453 case CAM_BDR_SENT: 1454 io->taskio.task_action = CTL_TASK_TARGET_RESET; 1455 break; 1456 case CAM_MESSAGE_RECV: 1457 switch (inot->arg) { 1458 case MSG_ABORT_TASK_SET: 1459 io->taskio.task_action = 1460 CTL_TASK_ABORT_TASK_SET; 1461 break; 1462 case MSG_TARGET_RESET: 1463 io->taskio.task_action = 1464 CTL_TASK_TARGET_RESET; 1465 break; 1466 case MSG_ABORT_TASK: 1467 io->taskio.task_action = 1468 CTL_TASK_ABORT_TASK; 1469 break; 1470 case MSG_LOGICAL_UNIT_RESET: 1471 io->taskio.task_action = 1472 CTL_TASK_LUN_RESET; 1473 break; 1474 case MSG_CLEAR_TASK_SET: 1475 io->taskio.task_action = 1476 CTL_TASK_CLEAR_TASK_SET; 1477 break; 1478 case MSG_CLEAR_ACA: 1479 io->taskio.task_action = 1480 CTL_TASK_CLEAR_ACA; 1481 break; 1482 case MSG_NOOP: 1483 send_ctl_io = 0; 1484 break; 1485 default: 1486 xpt_print(periph->path, 1487 "%s: unsupported message 0x%x\n", 1488 __func__, inot->arg); 1489 send_ctl_io = 0; 1490 break; 1491 } 1492 break; 1493 case CAM_REQ_ABORTED: 1494 /* 1495 * This request was sent back by the driver. 1496 * XXX KDM what do we do here? 1497 */ 1498 send_ctl_io = 0; 1499 break; 1500 case CAM_REQ_INVALID: 1501 case CAM_PROVIDE_FAIL: 1502 default: 1503 /* 1504 * We should only get here if we're talking 1505 * to a talking to a SIM that is target 1506 * capable but supports the old API. In 1507 * that case, we need to just free the CCB. 1508 * If we actually send a notify acknowledge, 1509 * it will send that back with an error as 1510 * well. 1511 */ 1512 1513 if ((status != CAM_REQ_INVALID) 1514 && (status != CAM_PROVIDE_FAIL)) 1515 xpt_print(periph->path, 1516 "%s: unsupported CAM status 0x%x\n", 1517 __func__, status); 1518 1519 ctlfe_free_ccb(periph, done_ccb); 1520 1521 goto out; 1522 } 1523 if (send_ctl_io != 0) { 1524 ctl_queue(io); 1525 } else { 1526 done_ccb->ccb_h.status = CAM_REQ_INPROG; 1527 done_ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE; 1528 xpt_action(done_ccb); 1529 } 1530 1531 if (frozen != 0) { 1532 cam_release_devq(periph->path, 1533 /*relsim_flags*/ 0, 1534 /*opening reduction*/ 0, 1535 /*timeout*/ 0, 1536 /*getcount_only*/ 0); 1537 } 1538 break; 1539 } 1540 case XPT_NOTIFY_ACKNOWLEDGE: 1541 /* 1542 * Queue this back down to the SIM as an immediate notify. 1543 */ 1544 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY; 1545 xpt_action(done_ccb); 1546 softc->inots_sent++; 1547 break; 1548 case XPT_SET_SIM_KNOB: 1549 case XPT_GET_SIM_KNOB: 1550 break; 1551 default: 1552 panic("%s: unexpected CCB type %#x", __func__, 1553 done_ccb->ccb_h.func_code); 1554 break; 1555 } 1556 1557 out: 1558 mtx_unlock(mtx); 1559 } 1560 1561 static void 1562 ctlfe_onoffline(void *arg, int online) 1563 { 1564 struct ctlfe_softc *bus_softc; 1565 union ccb *ccb; 1566 cam_status status; 1567 struct cam_path *path; 1568 int set_wwnn; 1569 1570 bus_softc = (struct ctlfe_softc *)arg; 1571 1572 set_wwnn = 0; 1573 1574 status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id, 1575 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1576 if (status != CAM_REQ_CMP) { 1577 printf("%s: unable to create path!\n", __func__); 1578 return; 1579 } 1580 ccb = xpt_alloc_ccb(); 1581 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE); 1582 1583 /* 1584 * Copan WWN format: 1585 * 1586 * Bits 63-60: 0x5 NAA, IEEE registered name 1587 * Bits 59-36: 0x000ED5 IEEE Company name assigned to Copan 1588 * Bits 35-12: Copan SSN (Sequential Serial Number) 1589 * Bits 11-8: Type of port: 1590 * 1 == N-Port 1591 * 2 == F-Port 1592 * 3 == NL-Port 1593 * Bits 7-0: 0 == Node Name, >0 == Port Number 1594 */ 1595 1596 if (online != 0) { 1597 1598 ccb->ccb_h.func_code = XPT_GET_SIM_KNOB; 1599 1600 1601 xpt_action(ccb); 1602 1603 1604 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){ 1605 #ifdef RANDOM_WWNN 1606 uint64_t random_bits; 1607 #endif 1608 1609 printf("%s: %s current WWNN %#jx\n", __func__, 1610 bus_softc->port_name, 1611 ccb->knob.xport_specific.fc.wwnn); 1612 printf("%s: %s current WWPN %#jx\n", __func__, 1613 bus_softc->port_name, 1614 ccb->knob.xport_specific.fc.wwpn); 1615 1616 #ifdef RANDOM_WWNN 1617 arc4rand(&random_bits, sizeof(random_bits), 0); 1618 #endif 1619 1620 /* 1621 * XXX KDM this is a bit of a kludge for now. We 1622 * take the current WWNN/WWPN from the card, and 1623 * replace the company identifier and the NL-Port 1624 * indicator and the port number (for the WWPN). 1625 * This should be replaced later with ddb_GetWWNN, 1626 * or possibly a more centralized scheme. (It 1627 * would be nice to have the WWNN/WWPN for each 1628 * port stored in the ctl_port structure.) 1629 */ 1630 #ifdef RANDOM_WWNN 1631 ccb->knob.xport_specific.fc.wwnn = 1632 (random_bits & 1633 0x0000000fffffff00ULL) | 1634 /* Company ID */ 0x5000ED5000000000ULL | 1635 /* NL-Port */ 0x0300; 1636 ccb->knob.xport_specific.fc.wwpn = 1637 (random_bits & 1638 0x0000000fffffff00ULL) | 1639 /* Company ID */ 0x5000ED5000000000ULL | 1640 /* NL-Port */ 0x3000 | 1641 /* Port Num */ (bus_softc->port.targ_port & 0xff); 1642 1643 /* 1644 * This is a bit of an API break/reversal, but if 1645 * we're doing the random WWNN that's a little 1646 * different anyway. So record what we're actually 1647 * using with the frontend code so it's reported 1648 * accurately. 1649 */ 1650 ctl_port_set_wwns(&bus_softc->port, 1651 true, ccb->knob.xport_specific.fc.wwnn, 1652 true, ccb->knob.xport_specific.fc.wwpn); 1653 set_wwnn = 1; 1654 #else /* RANDOM_WWNN */ 1655 /* 1656 * If the user has specified a WWNN/WWPN, send them 1657 * down to the SIM. Otherwise, record what the SIM 1658 * has reported. 1659 */ 1660 if (bus_softc->port.wwnn != 0 && bus_softc->port.wwnn 1661 != ccb->knob.xport_specific.fc.wwnn) { 1662 ccb->knob.xport_specific.fc.wwnn = 1663 bus_softc->port.wwnn; 1664 set_wwnn = 1; 1665 } else { 1666 ctl_port_set_wwns(&bus_softc->port, 1667 true, ccb->knob.xport_specific.fc.wwnn, 1668 false, 0); 1669 } 1670 if (bus_softc->port.wwpn != 0 && bus_softc->port.wwpn 1671 != ccb->knob.xport_specific.fc.wwpn) { 1672 ccb->knob.xport_specific.fc.wwpn = 1673 bus_softc->port.wwpn; 1674 set_wwnn = 1; 1675 } else { 1676 ctl_port_set_wwns(&bus_softc->port, 1677 false, 0, 1678 true, ccb->knob.xport_specific.fc.wwpn); 1679 } 1680 #endif /* RANDOM_WWNN */ 1681 1682 1683 if (set_wwnn != 0) { 1684 printf("%s: %s new WWNN %#jx\n", __func__, 1685 bus_softc->port_name, 1686 ccb->knob.xport_specific.fc.wwnn); 1687 printf("%s: %s new WWPN %#jx\n", __func__, 1688 bus_softc->port_name, 1689 ccb->knob.xport_specific.fc.wwpn); 1690 } 1691 } else { 1692 printf("%s: %s has no valid WWNN/WWPN\n", __func__, 1693 bus_softc->port_name); 1694 } 1695 } 1696 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB; 1697 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE; 1698 if (set_wwnn != 0) 1699 ccb->knob.xport_specific.valid |= KNOB_VALID_ADDRESS; 1700 1701 if (online != 0) 1702 ccb->knob.xport_specific.fc.role = KNOB_ROLE_TARGET; 1703 else 1704 ccb->knob.xport_specific.fc.role = KNOB_ROLE_NONE; 1705 1706 xpt_action(ccb); 1707 1708 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1709 printf("%s: SIM %s (path id %d) target %s failed with " 1710 "status %#x\n", 1711 __func__, bus_softc->port_name, bus_softc->path_id, 1712 (online != 0) ? "enable" : "disable", 1713 ccb->ccb_h.status); 1714 } else { 1715 printf("%s: SIM %s (path id %d) target %s succeeded\n", 1716 __func__, bus_softc->port_name, bus_softc->path_id, 1717 (online != 0) ? "enable" : "disable"); 1718 } 1719 1720 xpt_free_path(path); 1721 xpt_free_ccb(ccb); 1722 } 1723 1724 static void 1725 ctlfe_online(void *arg) 1726 { 1727 struct ctlfe_softc *bus_softc; 1728 struct cam_path *path; 1729 cam_status status; 1730 struct ctlfe_lun_softc *lun_softc; 1731 struct cam_periph *periph; 1732 1733 bus_softc = (struct ctlfe_softc *)arg; 1734 1735 /* 1736 * Create the wildcard LUN before bringing the port online. 1737 */ 1738 status = xpt_create_path(&path, /*periph*/ NULL, 1739 bus_softc->path_id, CAM_TARGET_WILDCARD, 1740 CAM_LUN_WILDCARD); 1741 if (status != CAM_REQ_CMP) { 1742 printf("%s: unable to create path for wildcard periph\n", 1743 __func__); 1744 return; 1745 } 1746 1747 lun_softc = malloc(sizeof(*lun_softc), M_CTLFE, M_WAITOK | M_ZERO); 1748 1749 xpt_path_lock(path); 1750 periph = cam_periph_find(path, "ctl"); 1751 if (periph != NULL) { 1752 /* We've already got a periph, no need to alloc a new one. */ 1753 xpt_path_unlock(path); 1754 xpt_free_path(path); 1755 free(lun_softc, M_CTLFE); 1756 return; 1757 } 1758 lun_softc->parent_softc = bus_softc; 1759 lun_softc->flags |= CTLFE_LUN_WILDCARD; 1760 1761 status = cam_periph_alloc(ctlferegister, 1762 ctlfeoninvalidate, 1763 ctlfecleanup, 1764 ctlfestart, 1765 "ctl", 1766 CAM_PERIPH_BIO, 1767 path, 1768 ctlfeasync, 1769 0, 1770 lun_softc); 1771 1772 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1773 const struct cam_status_entry *entry; 1774 1775 entry = cam_fetch_status_entry(status); 1776 printf("%s: CAM error %s (%#x) returned from " 1777 "cam_periph_alloc()\n", __func__, (entry != NULL) ? 1778 entry->status_text : "Unknown", status); 1779 free(lun_softc, M_CTLFE); 1780 } 1781 1782 xpt_path_unlock(path); 1783 ctlfe_onoffline(arg, /*online*/ 1); 1784 xpt_free_path(path); 1785 } 1786 1787 static void 1788 ctlfe_offline(void *arg) 1789 { 1790 struct ctlfe_softc *bus_softc; 1791 struct cam_path *path; 1792 cam_status status; 1793 struct cam_periph *periph; 1794 1795 bus_softc = (struct ctlfe_softc *)arg; 1796 1797 ctlfe_onoffline(arg, /*online*/ 0); 1798 1799 /* 1800 * Disable the wildcard LUN for this port now that we have taken 1801 * the port offline. 1802 */ 1803 status = xpt_create_path(&path, /*periph*/ NULL, 1804 bus_softc->path_id, CAM_TARGET_WILDCARD, 1805 CAM_LUN_WILDCARD); 1806 if (status != CAM_REQ_CMP) { 1807 printf("%s: unable to create path for wildcard periph\n", 1808 __func__); 1809 return; 1810 } 1811 xpt_path_lock(path); 1812 if ((periph = cam_periph_find(path, "ctl")) != NULL) 1813 cam_periph_invalidate(periph); 1814 xpt_path_unlock(path); 1815 xpt_free_path(path); 1816 } 1817 1818 /* 1819 * This will get called to enable a LUN on every bus that is attached to 1820 * CTL. So we only need to create a path/periph for this particular bus. 1821 */ 1822 static int 1823 ctlfe_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1824 { 1825 struct ctlfe_softc *bus_softc; 1826 struct ctlfe_lun_softc *softc; 1827 struct cam_path *path; 1828 struct cam_periph *periph; 1829 cam_status status; 1830 1831 bus_softc = (struct ctlfe_softc *)arg; 1832 1833 status = xpt_create_path(&path, /*periph*/ NULL, 1834 bus_softc->path_id, 1835 targ_id.id, lun_id); 1836 /* XXX KDM need some way to return status to CTL here? */ 1837 if (status != CAM_REQ_CMP) { 1838 printf("%s: could not create path, status %#x\n", __func__, 1839 status); 1840 return (1); 1841 } 1842 1843 softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO); 1844 xpt_path_lock(path); 1845 periph = cam_periph_find(path, "ctl"); 1846 if (periph != NULL) { 1847 /* We've already got a periph, no need to alloc a new one. */ 1848 xpt_path_unlock(path); 1849 xpt_free_path(path); 1850 free(softc, M_CTLFE); 1851 return (0); 1852 } 1853 softc->parent_softc = bus_softc; 1854 1855 status = cam_periph_alloc(ctlferegister, 1856 ctlfeoninvalidate, 1857 ctlfecleanup, 1858 ctlfestart, 1859 "ctl", 1860 CAM_PERIPH_BIO, 1861 path, 1862 ctlfeasync, 1863 0, 1864 softc); 1865 1866 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1867 const struct cam_status_entry *entry; 1868 1869 entry = cam_fetch_status_entry(status); 1870 printf("%s: CAM error %s (%#x) returned from " 1871 "cam_periph_alloc()\n", __func__, (entry != NULL) ? 1872 entry->status_text : "Unknown", status); 1873 free(softc, M_CTLFE); 1874 } 1875 1876 xpt_path_unlock(path); 1877 xpt_free_path(path); 1878 return (0); 1879 } 1880 1881 /* 1882 * This will get called when the user removes a LUN to disable that LUN 1883 * on every bus that is attached to CTL. 1884 */ 1885 static int 1886 ctlfe_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1887 { 1888 struct ctlfe_softc *softc; 1889 struct ctlfe_lun_softc *lun_softc; 1890 1891 softc = (struct ctlfe_softc *)arg; 1892 1893 mtx_lock(&softc->lun_softc_mtx); 1894 STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) { 1895 struct cam_path *path; 1896 1897 path = lun_softc->periph->path; 1898 1899 if ((xpt_path_target_id(path) == targ_id.id) 1900 && (xpt_path_lun_id(path) == lun_id)) { 1901 break; 1902 } 1903 } 1904 if (lun_softc == NULL) { 1905 mtx_unlock(&softc->lun_softc_mtx); 1906 printf("%s: can't find target %d lun %d\n", __func__, 1907 targ_id.id, lun_id); 1908 return (1); 1909 } 1910 cam_periph_acquire(lun_softc->periph); 1911 mtx_unlock(&softc->lun_softc_mtx); 1912 1913 cam_periph_lock(lun_softc->periph); 1914 cam_periph_invalidate(lun_softc->periph); 1915 cam_periph_unlock(lun_softc->periph); 1916 cam_periph_release(lun_softc->periph); 1917 return (0); 1918 } 1919 1920 static void 1921 ctlfe_dump_sim(struct cam_sim *sim) 1922 { 1923 1924 printf("%s%d: max tagged openings: %d, max dev openings: %d\n", 1925 sim->sim_name, sim->unit_number, 1926 sim->max_tagged_dev_openings, sim->max_dev_openings); 1927 } 1928 1929 /* 1930 * Assumes that the SIM lock is held. 1931 */ 1932 static void 1933 ctlfe_dump_queue(struct ctlfe_lun_softc *softc) 1934 { 1935 struct ccb_hdr *hdr; 1936 struct cam_periph *periph; 1937 int num_items; 1938 1939 periph = softc->periph; 1940 num_items = 0; 1941 1942 TAILQ_FOREACH(hdr, &softc->work_queue, periph_links.tqe) { 1943 union ctl_io *io = hdr->io_ptr; 1944 1945 num_items++; 1946 1947 /* 1948 * Only regular SCSI I/O is put on the work 1949 * queue, so we can print sense here. There may be no 1950 * sense if it's no the queue for a DMA, but this serves to 1951 * print out the CCB as well. 1952 * 1953 * XXX KDM switch this over to scsi_sense_print() when 1954 * CTL is merged in with CAM. 1955 */ 1956 ctl_io_error_print(io, NULL); 1957 1958 /* 1959 * Print DMA status if we are DMA_QUEUED. 1960 */ 1961 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) { 1962 xpt_print(periph->path, 1963 "Total %u, Current %u, Resid %u\n", 1964 io->scsiio.kern_total_len, 1965 io->scsiio.kern_data_len, 1966 io->scsiio.kern_data_resid); 1967 } 1968 } 1969 1970 xpt_print(periph->path, "%d requests total waiting for CCBs\n", 1971 num_items); 1972 xpt_print(periph->path, "%ju CCBs outstanding (%ju allocated, %ju " 1973 "freed)\n", (uintmax_t)(softc->ccbs_alloced - 1974 softc->ccbs_freed), (uintmax_t)softc->ccbs_alloced, 1975 (uintmax_t)softc->ccbs_freed); 1976 xpt_print(periph->path, "%ju CTIOs outstanding (%ju sent, %ju " 1977 "returned\n", (uintmax_t)(softc->ctios_sent - 1978 softc->ctios_returned), softc->ctios_sent, 1979 softc->ctios_returned); 1980 } 1981 1982 /* 1983 * Datamove/done routine called by CTL. Put ourselves on the queue to 1984 * receive a CCB from CAM so we can queue the continue I/O request down 1985 * to the adapter. 1986 */ 1987 static void 1988 ctlfe_datamove(union ctl_io *io) 1989 { 1990 union ccb *ccb; 1991 struct cam_periph *periph; 1992 struct ctlfe_lun_softc *softc; 1993 1994 KASSERT(io->io_hdr.io_type == CTL_IO_SCSI, 1995 ("Unexpected io_type (%d) in ctlfe_datamove", io->io_hdr.io_type)); 1996 1997 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1998 periph = xpt_path_periph(ccb->ccb_h.path); 1999 cam_periph_lock(periph); 2000 softc = (struct ctlfe_lun_softc *)periph->softc; 2001 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED; 2002 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) 2003 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED; 2004 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h, 2005 periph_links.tqe); 2006 xpt_schedule(periph, /*priority*/ 1); 2007 cam_periph_unlock(periph); 2008 } 2009 2010 static void 2011 ctlfe_done(union ctl_io *io) 2012 { 2013 union ccb *ccb; 2014 struct cam_periph *periph; 2015 struct ctlfe_lun_softc *softc; 2016 2017 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2018 periph = xpt_path_periph(ccb->ccb_h.path); 2019 cam_periph_lock(periph); 2020 softc = (struct ctlfe_lun_softc *)periph->softc; 2021 2022 if (io->io_hdr.io_type == CTL_IO_TASK) { 2023 /* 2024 * Task management commands don't require any further 2025 * communication back to the adapter. Requeue the CCB 2026 * to the adapter, and free the CTL I/O. 2027 */ 2028 xpt_print(ccb->ccb_h.path, "%s: returning task I/O " 2029 "tag %#x seq %#x\n", __func__, 2030 ccb->cin1.tag_id, ccb->cin1.seq_id); 2031 /* 2032 * Send the notify acknowledge down to the SIM, to let it 2033 * know we processed the task management command. 2034 */ 2035 ccb->ccb_h.status = CAM_REQ_INPROG; 2036 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE; 2037 xpt_action(ccb); 2038 } else if (io->io_hdr.flags & CTL_FLAG_STATUS_SENT) { 2039 if (softc->flags & CTLFE_LUN_WILDCARD) { 2040 ccb->ccb_h.target_id = CAM_TARGET_WILDCARD; 2041 ccb->ccb_h.target_lun = CAM_LUN_WILDCARD; 2042 } 2043 if (periph->flags & CAM_PERIPH_INVALID) { 2044 ctlfe_free_ccb(periph, ccb); 2045 } else { 2046 softc->atios_sent++; 2047 cam_periph_unlock(periph); 2048 xpt_action(ccb); 2049 return; 2050 } 2051 } else { 2052 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED; 2053 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h, 2054 periph_links.tqe); 2055 xpt_schedule(periph, /*priority*/ 1); 2056 } 2057 2058 cam_periph_unlock(periph); 2059 } 2060 2061 static void 2062 ctlfe_dump(void) 2063 { 2064 struct ctlfe_softc *bus_softc; 2065 struct ctlfe_lun_softc *lun_softc; 2066 2067 STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) { 2068 ctlfe_dump_sim(bus_softc->sim); 2069 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links) 2070 ctlfe_dump_queue(lun_softc); 2071 } 2072 } 2073