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 target_id_t target_id; 79 u_int maxio; 80 struct cam_sim *sim; 81 char port_name[DEV_IDLEN]; 82 struct mtx lun_softc_mtx; 83 STAILQ_HEAD(, ctlfe_lun_softc) lun_softc_list; 84 STAILQ_ENTRY(ctlfe_softc) links; 85 }; 86 87 STAILQ_HEAD(, ctlfe_softc) ctlfe_softc_list; 88 struct mtx ctlfe_list_mtx; 89 static char ctlfe_mtx_desc[] = "ctlfelist"; 90 #ifdef CTLFE_INIT_ENABLE 91 static int ctlfe_max_targets = 1; 92 static int ctlfe_num_targets = 0; 93 #endif 94 95 typedef enum { 96 CTLFE_LUN_NONE = 0x00, 97 CTLFE_LUN_WILDCARD = 0x01 98 } ctlfe_lun_flags; 99 100 struct ctlfe_lun_softc { 101 struct ctlfe_softc *parent_softc; 102 struct cam_periph *periph; 103 ctlfe_lun_flags flags; 104 uint64_t ccbs_alloced; 105 uint64_t ccbs_freed; 106 uint64_t ctios_sent; 107 uint64_t ctios_returned; 108 uint64_t atios_alloced; 109 uint64_t atios_freed; 110 uint64_t inots_alloced; 111 uint64_t inots_freed; 112 /* bus_dma_tag_t dma_tag; */ 113 TAILQ_HEAD(, ccb_hdr) work_queue; 114 STAILQ_ENTRY(ctlfe_lun_softc) links; 115 }; 116 117 typedef enum { 118 CTLFE_CMD_NONE = 0x00, 119 CTLFE_CMD_PIECEWISE = 0x01 120 } ctlfe_cmd_flags; 121 122 struct ctlfe_cmd_info { 123 int cur_transfer_index; 124 size_t cur_transfer_off; 125 ctlfe_cmd_flags flags; 126 /* 127 * XXX KDM struct bus_dma_segment is 8 bytes on i386, and 16 128 * bytes on amd64. So with 32 elements, this is 256 bytes on 129 * i386 and 512 bytes on amd64. 130 */ 131 #define CTLFE_MAX_SEGS 32 132 bus_dma_segment_t cam_sglist[CTLFE_MAX_SEGS]; 133 }; 134 135 /* 136 * When we register the adapter/bus, request that this many ctl_ios be 137 * allocated. This should be the maximum supported by the adapter, but we 138 * currently don't have a way to get that back from the path inquiry. 139 * XXX KDM add that to the path inquiry. 140 */ 141 #define CTLFE_REQ_CTL_IO 4096 142 /* 143 * Number of Accept Target I/O CCBs to allocate and queue down to the 144 * adapter per LUN. 145 * XXX KDM should this be controlled by CTL? 146 */ 147 #define CTLFE_ATIO_PER_LUN 1024 148 /* 149 * Number of Immediate Notify CCBs (used for aborts, resets, etc.) to 150 * allocate and queue down to the adapter per LUN. 151 * XXX KDM should this be controlled by CTL? 152 */ 153 #define CTLFE_IN_PER_LUN 1024 154 155 /* 156 * Timeout (in seconds) on CTIO CCB allocation for doing a DMA or sending 157 * status to the initiator. The SIM is expected to have its own timeouts, 158 * so we're not putting this timeout around the CCB execution time. The 159 * SIM should timeout and let us know if it has an issue. 160 */ 161 #define CTLFE_DMA_TIMEOUT 60 162 163 /* 164 * Turn this on to enable extra debugging prints. 165 */ 166 #if 0 167 #define CTLFE_DEBUG 168 #endif 169 170 /* 171 * Use randomly assigned WWNN/WWPN values. This is to work around an issue 172 * in the FreeBSD initiator that makes it unable to rescan the target if 173 * the target gets rebooted and the WWNN/WWPN stay the same. 174 */ 175 #if 0 176 #define RANDOM_WWNN 177 #endif 178 179 MALLOC_DEFINE(M_CTLFE, "CAM CTL FE", "CAM CTL FE interface"); 180 181 #define io_ptr ppriv_ptr0 182 183 /* This is only used in the CTIO */ 184 #define ccb_atio ppriv_ptr1 185 186 int ctlfeinitialize(void); 187 void ctlfeshutdown(void); 188 static periph_init_t ctlfeperiphinit; 189 static void ctlfeasync(void *callback_arg, uint32_t code, 190 struct cam_path *path, void *arg); 191 static periph_ctor_t ctlferegister; 192 static periph_oninv_t ctlfeoninvalidate; 193 static periph_dtor_t ctlfecleanup; 194 static periph_start_t ctlfestart; 195 static void ctlfedone(struct cam_periph *periph, 196 union ccb *done_ccb); 197 198 static void ctlfe_onoffline(void *arg, int online); 199 static void ctlfe_online(void *arg); 200 static void ctlfe_offline(void *arg); 201 static int ctlfe_lun_enable(void *arg, int lun_id); 202 static int ctlfe_lun_disable(void *arg, int lun_id); 203 static void ctlfe_dump_sim(struct cam_sim *sim); 204 static void ctlfe_dump_queue(struct ctlfe_lun_softc *softc); 205 static void ctlfe_datamove(union ctl_io *io); 206 static void ctlfe_done(union ctl_io *io); 207 static void ctlfe_dump(void); 208 209 static struct periph_driver ctlfe_driver = 210 { 211 ctlfeperiphinit, "ctl", 212 TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0, 213 CAM_PERIPH_DRV_EARLY 214 }; 215 216 static struct ctl_frontend ctlfe_frontend = 217 { 218 .name = "camtgt", 219 .init = ctlfeinitialize, 220 .fe_dump = ctlfe_dump, 221 .shutdown = ctlfeshutdown, 222 }; 223 CTL_FRONTEND_DECLARE(ctlfe, ctlfe_frontend); 224 225 void 226 ctlfeshutdown(void) 227 { 228 return; 229 } 230 231 int 232 ctlfeinitialize(void) 233 { 234 235 STAILQ_INIT(&ctlfe_softc_list); 236 mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF); 237 periphdriver_register(&ctlfe_driver); 238 return (0); 239 } 240 241 void 242 ctlfeperiphinit(void) 243 { 244 cam_status status; 245 246 status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED | 247 AC_CONTRACT, ctlfeasync, NULL, NULL); 248 if (status != CAM_REQ_CMP) { 249 printf("ctl: Failed to attach async callback due to CAM " 250 "status 0x%x!\n", status); 251 } 252 } 253 254 static void 255 ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 256 { 257 struct ctlfe_softc *softc; 258 259 #ifdef CTLFEDEBUG 260 printf("%s: entered\n", __func__); 261 #endif 262 263 mtx_lock(&ctlfe_list_mtx); 264 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) { 265 if (softc->path_id == xpt_path_path_id(path)) 266 break; 267 } 268 mtx_unlock(&ctlfe_list_mtx); 269 270 /* 271 * When a new path gets registered, and it is capable of target 272 * mode, go ahead and attach. Later on, we may need to be more 273 * selective, but for now this will be sufficient. 274 */ 275 switch (code) { 276 case AC_PATH_REGISTERED: { 277 struct ctl_port *port; 278 struct ccb_pathinq *cpi; 279 int retval; 280 281 cpi = (struct ccb_pathinq *)arg; 282 283 /* Don't attach if it doesn't support target mode */ 284 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) { 285 #ifdef CTLFEDEBUG 286 printf("%s: SIM %s%d doesn't support target mode\n", 287 __func__, cpi->dev_name, cpi->unit_number); 288 #endif 289 break; 290 } 291 292 if (softc != NULL) { 293 #ifdef CTLFEDEBUG 294 printf("%s: CTL port for CAM path %u already exists\n", 295 __func__, xpt_path_path_id(path)); 296 #endif 297 break; 298 } 299 300 #ifdef CTLFE_INIT_ENABLE 301 if (ctlfe_num_targets >= ctlfe_max_targets) { 302 union ccb *ccb; 303 304 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP, 305 M_NOWAIT | M_ZERO); 306 if (ccb == NULL) { 307 printf("%s: unable to malloc CCB!\n", __func__); 308 return; 309 } 310 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE); 311 312 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB; 313 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE; 314 ccb->knob.xport_specific.fc.role = KNOB_ROLE_INITIATOR; 315 316 xpt_action(ccb); 317 318 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 319 CAM_REQ_CMP) { 320 printf("%s: SIM %s%d (path id %d) initiator " 321 "enable failed with status %#x\n", 322 __func__, cpi->dev_name, 323 cpi->unit_number, cpi->ccb_h.path_id, 324 ccb->ccb_h.status); 325 } else { 326 printf("%s: SIM %s%d (path id %d) initiator " 327 "enable succeeded\n", 328 __func__, cpi->dev_name, 329 cpi->unit_number, cpi->ccb_h.path_id); 330 } 331 332 free(ccb, M_TEMP); 333 334 break; 335 } else { 336 ctlfe_num_targets++; 337 } 338 339 printf("%s: ctlfe_num_targets = %d\n", __func__, 340 ctlfe_num_targets); 341 #endif /* CTLFE_INIT_ENABLE */ 342 343 /* 344 * We're in an interrupt context here, so we have to 345 * use M_NOWAIT. Of course this means trouble if we 346 * can't allocate memory. 347 */ 348 softc = malloc(sizeof(*softc), M_CTLFE, M_NOWAIT | M_ZERO); 349 if (softc == NULL) { 350 printf("%s: unable to malloc %zd bytes for softc\n", 351 __func__, sizeof(*softc)); 352 return; 353 } 354 355 softc->path_id = cpi->ccb_h.path_id; 356 softc->target_id = cpi->initiator_id; 357 softc->sim = xpt_path_sim(path); 358 if (cpi->maxio != 0) 359 softc->maxio = cpi->maxio; 360 else 361 softc->maxio = DFLTPHYS; 362 mtx_init(&softc->lun_softc_mtx, "LUN softc mtx", NULL, MTX_DEF); 363 STAILQ_INIT(&softc->lun_softc_list); 364 365 port = &softc->port; 366 port->frontend = &ctlfe_frontend; 367 368 /* 369 * XXX KDM should we be more accurate here ? 370 */ 371 if (cpi->transport == XPORT_FC) 372 port->port_type = CTL_PORT_FC; 373 else if (cpi->transport == XPORT_SAS) 374 port->port_type = CTL_PORT_SAS; 375 else 376 port->port_type = CTL_PORT_SCSI; 377 378 /* XXX KDM what should the real number be here? */ 379 port->num_requested_ctl_io = 4096; 380 snprintf(softc->port_name, sizeof(softc->port_name), 381 "%s%d", cpi->dev_name, cpi->unit_number); 382 /* 383 * XXX KDM it would be nice to allocate storage in the 384 * frontend structure itself. 385 */ 386 port->port_name = softc->port_name; 387 port->physical_port = cpi->bus_id; 388 port->virtual_port = 0; 389 port->port_online = ctlfe_online; 390 port->port_offline = ctlfe_offline; 391 port->onoff_arg = softc; 392 port->lun_enable = ctlfe_lun_enable; 393 port->lun_disable = ctlfe_lun_disable; 394 port->targ_lun_arg = softc; 395 port->fe_datamove = ctlfe_datamove; 396 port->fe_done = ctlfe_done; 397 /* 398 * XXX KDM the path inquiry doesn't give us the maximum 399 * number of targets supported. 400 */ 401 port->max_targets = cpi->max_target; 402 port->max_target_id = cpi->max_target; 403 port->targ_port = -1; 404 405 /* 406 * XXX KDM need to figure out whether we're the master or 407 * slave. 408 */ 409 #ifdef CTLFEDEBUG 410 printf("%s: calling ctl_port_register() for %s%d\n", 411 __func__, cpi->dev_name, cpi->unit_number); 412 #endif 413 retval = ctl_port_register(port); 414 if (retval != 0) { 415 printf("%s: ctl_port_register() failed with " 416 "error %d!\n", __func__, retval); 417 mtx_destroy(&softc->lun_softc_mtx); 418 free(softc, M_CTLFE); 419 break; 420 } else { 421 mtx_lock(&ctlfe_list_mtx); 422 STAILQ_INSERT_TAIL(&ctlfe_softc_list, softc, links); 423 mtx_unlock(&ctlfe_list_mtx); 424 } 425 426 break; 427 } 428 case AC_PATH_DEREGISTERED: { 429 430 if (softc != NULL) { 431 /* 432 * XXX KDM are we certain at this point that there 433 * are no outstanding commands for this frontend? 434 */ 435 mtx_lock(&ctlfe_list_mtx); 436 STAILQ_REMOVE(&ctlfe_softc_list, softc, ctlfe_softc, 437 links); 438 mtx_unlock(&ctlfe_list_mtx); 439 ctl_port_deregister(&softc->port); 440 mtx_destroy(&softc->lun_softc_mtx); 441 free(softc, M_CTLFE); 442 } 443 break; 444 } 445 case AC_CONTRACT: { 446 struct ac_contract *ac; 447 448 ac = (struct ac_contract *)arg; 449 450 switch (ac->contract_number) { 451 case AC_CONTRACT_DEV_CHG: { 452 struct ac_device_changed *dev_chg; 453 int retval; 454 455 dev_chg = (struct ac_device_changed *)ac->contract_data; 456 457 printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n", 458 __func__, dev_chg->wwpn, dev_chg->port, 459 xpt_path_path_id(path), dev_chg->target, 460 (dev_chg->arrived == 0) ? "left" : "arrived"); 461 462 if (softc == NULL) { 463 printf("%s: CTL port for CAM path %u not " 464 "found!\n", __func__, 465 xpt_path_path_id(path)); 466 break; 467 } 468 if (dev_chg->arrived != 0) { 469 retval = ctl_add_initiator(&softc->port, 470 dev_chg->target, dev_chg->wwpn, NULL); 471 } else { 472 retval = ctl_remove_initiator(&softc->port, 473 dev_chg->target); 474 } 475 476 if (retval < 0) { 477 printf("%s: could not %s port %d iid %u " 478 "WWPN %#jx!\n", __func__, 479 (dev_chg->arrived != 0) ? "add" : 480 "remove", softc->port.targ_port, 481 dev_chg->target, 482 (uintmax_t)dev_chg->wwpn); 483 } 484 break; 485 } 486 default: 487 printf("%s: unsupported contract number %ju\n", 488 __func__, (uintmax_t)ac->contract_number); 489 break; 490 } 491 break; 492 } 493 default: 494 break; 495 } 496 } 497 498 static cam_status 499 ctlferegister(struct cam_periph *periph, void *arg) 500 { 501 struct ctlfe_softc *bus_softc; 502 struct ctlfe_lun_softc *softc; 503 union ccb en_lun_ccb; 504 cam_status status; 505 int i; 506 507 softc = (struct ctlfe_lun_softc *)arg; 508 bus_softc = softc->parent_softc; 509 510 TAILQ_INIT(&softc->work_queue); 511 softc->periph = periph; 512 periph->softc = softc; 513 514 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE); 515 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN; 516 en_lun_ccb.cel.grp6_len = 0; 517 en_lun_ccb.cel.grp7_len = 0; 518 en_lun_ccb.cel.enable = 1; 519 xpt_action(&en_lun_ccb); 520 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK); 521 if (status != CAM_REQ_CMP) { 522 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n", 523 __func__, en_lun_ccb.ccb_h.status); 524 return (status); 525 } 526 527 status = CAM_REQ_CMP; 528 529 for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) { 530 union ccb *new_ccb; 531 union ctl_io *new_io; 532 struct ctlfe_cmd_info *cmd_info; 533 534 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE, 535 M_ZERO|M_NOWAIT); 536 if (new_ccb == NULL) { 537 status = CAM_RESRC_UNAVAIL; 538 break; 539 } 540 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref); 541 if (new_io == NULL) { 542 free(new_ccb, M_CTLFE); 543 status = CAM_RESRC_UNAVAIL; 544 break; 545 } 546 cmd_info = malloc(sizeof(*cmd_info), M_CTLFE, 547 M_ZERO | M_NOWAIT); 548 if (cmd_info == NULL) { 549 ctl_free_io(new_io); 550 free(new_ccb, M_CTLFE); 551 status = CAM_RESRC_UNAVAIL; 552 break; 553 } 554 new_io->io_hdr.ctl_private[CTL_PRIV_FRONTEND2].ptr = cmd_info; 555 softc->atios_alloced++; 556 new_ccb->ccb_h.io_ptr = new_io; 557 558 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1); 559 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO; 560 new_ccb->ccb_h.cbfcnp = ctlfedone; 561 new_ccb->ccb_h.flags |= CAM_UNLOCKED; 562 xpt_action(new_ccb); 563 status = new_ccb->ccb_h.status; 564 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 565 free(cmd_info, M_CTLFE); 566 ctl_free_io(new_io); 567 free(new_ccb, M_CTLFE); 568 break; 569 } 570 } 571 572 status = cam_periph_acquire(periph); 573 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 574 xpt_print(periph->path, "%s: could not acquire reference " 575 "count, status = %#x\n", __func__, status); 576 return (status); 577 } 578 579 if (i == 0) { 580 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, " 581 "status 0x%x\n", __func__, status); 582 return (CAM_REQ_CMP_ERR); 583 } 584 585 for (i = 0; i < CTLFE_IN_PER_LUN; i++) { 586 union ccb *new_ccb; 587 union ctl_io *new_io; 588 589 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE, 590 M_ZERO|M_NOWAIT); 591 if (new_ccb == NULL) { 592 status = CAM_RESRC_UNAVAIL; 593 break; 594 } 595 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref); 596 if (new_io == NULL) { 597 free(new_ccb, M_CTLFE); 598 status = CAM_RESRC_UNAVAIL; 599 break; 600 } 601 softc->inots_alloced++; 602 new_ccb->ccb_h.io_ptr = new_io; 603 604 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1); 605 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY; 606 new_ccb->ccb_h.cbfcnp = ctlfedone; 607 new_ccb->ccb_h.flags |= CAM_UNLOCKED; 608 xpt_action(new_ccb); 609 status = new_ccb->ccb_h.status; 610 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 611 /* 612 * Note that we don't free the CCB here. If the 613 * status is not CAM_REQ_INPROG, then we're 614 * probably talking to a SIM that says it is 615 * target-capable but doesn't support the 616 * XPT_IMMEDIATE_NOTIFY CCB. i.e. it supports the 617 * older API. In that case, it'll call xpt_done() 618 * on the CCB, and we need to free it in our done 619 * routine as a result. 620 */ 621 break; 622 } 623 } 624 if ((i == 0) 625 || (status != CAM_REQ_INPROG)) { 626 xpt_print(periph->path, "%s: could not allocate immediate " 627 "notify CCBs, status 0x%x\n", __func__, status); 628 return (CAM_REQ_CMP_ERR); 629 } 630 mtx_lock(&bus_softc->lun_softc_mtx); 631 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links); 632 mtx_unlock(&bus_softc->lun_softc_mtx); 633 return (CAM_REQ_CMP); 634 } 635 636 static void 637 ctlfeoninvalidate(struct cam_periph *periph) 638 { 639 union ccb en_lun_ccb; 640 cam_status status; 641 struct ctlfe_softc *bus_softc; 642 struct ctlfe_lun_softc *softc; 643 644 softc = (struct ctlfe_lun_softc *)periph->softc; 645 646 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE); 647 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN; 648 en_lun_ccb.cel.grp6_len = 0; 649 en_lun_ccb.cel.grp7_len = 0; 650 en_lun_ccb.cel.enable = 0; 651 xpt_action(&en_lun_ccb); 652 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK); 653 if (status != CAM_REQ_CMP) { 654 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n", 655 __func__, en_lun_ccb.ccb_h.status); 656 /* 657 * XXX KDM what do we do now? 658 */ 659 } 660 661 bus_softc = softc->parent_softc; 662 mtx_lock(&bus_softc->lun_softc_mtx); 663 STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links); 664 mtx_unlock(&bus_softc->lun_softc_mtx); 665 } 666 667 static void 668 ctlfecleanup(struct cam_periph *periph) 669 { 670 struct ctlfe_lun_softc *softc; 671 672 softc = (struct ctlfe_lun_softc *)periph->softc; 673 674 KASSERT(softc->ccbs_freed == softc->ccbs_alloced, ("%s: " 675 "ccbs_freed %ju != ccbs_alloced %ju", __func__, 676 softc->ccbs_freed, softc->ccbs_alloced)); 677 KASSERT(softc->ctios_returned == softc->ctios_sent, ("%s: " 678 "ctios_returned %ju != ctios_sent %ju", __func__, 679 softc->ctios_returned, softc->ctios_sent)); 680 KASSERT(softc->atios_freed == softc->atios_alloced, ("%s: " 681 "atios_freed %ju != atios_alloced %ju", __func__, 682 softc->atios_freed, softc->atios_alloced)); 683 KASSERT(softc->inots_freed == softc->inots_alloced, ("%s: " 684 "inots_freed %ju != inots_alloced %ju", __func__, 685 softc->inots_freed, softc->inots_alloced)); 686 687 free(softc, M_CTLFE); 688 } 689 690 static void 691 ctlfedata(struct ctlfe_lun_softc *softc, union ctl_io *io, 692 ccb_flags *flags, uint8_t **data_ptr, uint32_t *dxfer_len, 693 u_int16_t *sglist_cnt) 694 { 695 struct ctlfe_softc *bus_softc; 696 struct ctlfe_cmd_info *cmd_info; 697 struct ctl_sg_entry *ctl_sglist; 698 bus_dma_segment_t *cam_sglist; 699 size_t off; 700 int i, idx; 701 702 cmd_info = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND2].ptr; 703 bus_softc = softc->parent_softc; 704 705 /* 706 * Set the direction, relative to the initiator. 707 */ 708 *flags &= ~CAM_DIR_MASK; 709 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 710 *flags |= CAM_DIR_IN; 711 else 712 *flags |= CAM_DIR_OUT; 713 714 *flags &= ~CAM_DATA_MASK; 715 idx = cmd_info->cur_transfer_index; 716 off = cmd_info->cur_transfer_off; 717 cmd_info->flags &= ~CTLFE_CMD_PIECEWISE; 718 if (io->scsiio.kern_sg_entries == 0) { 719 /* No S/G list. */ 720 *data_ptr = io->scsiio.kern_data_ptr + off; 721 if (io->scsiio.kern_data_len - off <= bus_softc->maxio) { 722 *dxfer_len = io->scsiio.kern_data_len - off; 723 } else { 724 *dxfer_len = bus_softc->maxio; 725 cmd_info->cur_transfer_index = -1; 726 cmd_info->cur_transfer_off = bus_softc->maxio; 727 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 728 } 729 *sglist_cnt = 0; 730 731 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) 732 *flags |= CAM_DATA_PADDR; 733 else 734 *flags |= CAM_DATA_VADDR; 735 } else { 736 /* S/G list with physical or virtual pointers. */ 737 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 738 cam_sglist = cmd_info->cam_sglist; 739 *dxfer_len = 0; 740 for (i = 0; i < io->scsiio.kern_sg_entries - idx; i++) { 741 cam_sglist[i].ds_addr = (bus_addr_t)ctl_sglist[i + idx].addr + off; 742 if (ctl_sglist[i + idx].len - off <= bus_softc->maxio - *dxfer_len) { 743 cam_sglist[i].ds_len = ctl_sglist[idx + i].len - off; 744 *dxfer_len += cam_sglist[i].ds_len; 745 } else { 746 cam_sglist[i].ds_len = bus_softc->maxio - *dxfer_len; 747 cmd_info->cur_transfer_index = idx + i; 748 cmd_info->cur_transfer_off = cam_sglist[i].ds_len + off; 749 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 750 *dxfer_len += cam_sglist[i].ds_len; 751 if (ctl_sglist[i].len != 0) 752 i++; 753 break; 754 } 755 if (i == (CTLFE_MAX_SEGS - 1) && 756 idx + i < (io->scsiio.kern_sg_entries - 1)) { 757 cmd_info->cur_transfer_index = idx + i + 1; 758 cmd_info->cur_transfer_off = 0; 759 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 760 i++; 761 break; 762 } 763 off = 0; 764 } 765 *sglist_cnt = i; 766 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) 767 *flags |= CAM_DATA_SG_PADDR; 768 else 769 *flags |= CAM_DATA_SG; 770 *data_ptr = (uint8_t *)cam_sglist; 771 } 772 } 773 774 static void 775 ctlfestart(struct cam_periph *periph, union ccb *start_ccb) 776 { 777 struct ctlfe_lun_softc *softc; 778 struct ctlfe_cmd_info *cmd_info; 779 struct ccb_hdr *ccb_h; 780 struct ccb_accept_tio *atio; 781 struct ccb_scsiio *csio; 782 uint8_t *data_ptr; 783 uint32_t dxfer_len; 784 ccb_flags flags; 785 union ctl_io *io; 786 uint8_t scsi_status; 787 788 softc = (struct ctlfe_lun_softc *)periph->softc; 789 softc->ccbs_alloced++; 790 791 ccb_h = TAILQ_FIRST(&softc->work_queue); 792 if (ccb_h == NULL) { 793 softc->ccbs_freed++; 794 xpt_release_ccb(start_ccb); 795 return; 796 } 797 798 /* Take the ATIO off the work queue */ 799 TAILQ_REMOVE(&softc->work_queue, ccb_h, periph_links.tqe); 800 atio = (struct ccb_accept_tio *)ccb_h; 801 io = (union ctl_io *)ccb_h->io_ptr; 802 csio = &start_ccb->csio; 803 804 flags = atio->ccb_h.flags & 805 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK); 806 cmd_info = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND2].ptr; 807 cmd_info->cur_transfer_index = 0; 808 cmd_info->cur_transfer_off = 0; 809 cmd_info->flags = 0; 810 811 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) { 812 /* 813 * Datamove call, we need to setup the S/G list. 814 */ 815 scsi_status = 0; 816 csio->cdb_len = atio->cdb_len; 817 ctlfedata(softc, io, &flags, &data_ptr, &dxfer_len, 818 &csio->sglist_cnt); 819 io->scsiio.ext_data_filled += dxfer_len; 820 if (io->scsiio.ext_data_filled > io->scsiio.kern_total_len) { 821 xpt_print(periph->path, "%s: tag 0x%04x " 822 "fill len %u > total %u\n", 823 __func__, io->scsiio.tag_num, 824 io->scsiio.ext_data_filled, 825 io->scsiio.kern_total_len); 826 } 827 } else { 828 /* 829 * We're done, send status back. 830 */ 831 if ((io->io_hdr.flags & CTL_FLAG_ABORT) && 832 (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) { 833 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED; 834 835 /* 836 * If this command was aborted, we don't 837 * need to send status back to the SIM. 838 * Just free the CTIO and ctl_io, and 839 * recycle the ATIO back to the SIM. 840 */ 841 xpt_print(periph->path, "%s: aborted " 842 "command 0x%04x discarded\n", 843 __func__, io->scsiio.tag_num); 844 /* 845 * For a wildcard attachment, commands can 846 * come in with a specific target/lun. Reset 847 * the target and LUN fields back to the 848 * wildcard values before we send them back 849 * down to the SIM. The SIM has a wildcard 850 * LUN enabled, not whatever target/lun 851 * these happened to be. 852 */ 853 if (softc->flags & CTLFE_LUN_WILDCARD) { 854 atio->ccb_h.target_id = CAM_TARGET_WILDCARD; 855 atio->ccb_h.target_lun = CAM_LUN_WILDCARD; 856 } 857 858 if (atio->ccb_h.func_code != XPT_ACCEPT_TARGET_IO) { 859 xpt_print(periph->path, "%s: func_code " 860 "is %#x\n", __func__, 861 atio->ccb_h.func_code); 862 } 863 start_ccb->ccb_h.func_code = XPT_ABORT; 864 start_ccb->cab.abort_ccb = (union ccb *)atio; 865 866 /* Tell the SIM that we've aborted this ATIO */ 867 xpt_action(start_ccb); 868 softc->ccbs_freed++; 869 xpt_release_ccb(start_ccb); 870 871 /* 872 * Send the ATIO back down to the SIM. 873 */ 874 xpt_action((union ccb *)atio); 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 /* 968 * If we still have work to do, ask for another CCB. 969 */ 970 if (!TAILQ_EMPTY(&softc->work_queue)) 971 xpt_schedule(periph, /*priority*/ 1); 972 } 973 974 static void 975 ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb) 976 { 977 struct ctlfe_lun_softc *softc; 978 union ctl_io *io; 979 struct ctlfe_cmd_info *cmd_info; 980 981 softc = (struct ctlfe_lun_softc *)periph->softc; 982 io = ccb->ccb_h.io_ptr; 983 984 switch (ccb->ccb_h.func_code) { 985 case XPT_ACCEPT_TARGET_IO: 986 softc->atios_freed++; 987 cmd_info = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND2].ptr; 988 free(cmd_info, M_CTLFE); 989 break; 990 case XPT_IMMEDIATE_NOTIFY: 991 case XPT_NOTIFY_ACKNOWLEDGE: 992 softc->inots_freed++; 993 break; 994 default: 995 break; 996 } 997 998 ctl_free_io(io); 999 free(ccb, M_CTLFE); 1000 1001 KASSERT(softc->atios_freed <= softc->atios_alloced, ("%s: " 1002 "atios_freed %ju > atios_alloced %ju", __func__, 1003 softc->atios_freed, softc->atios_alloced)); 1004 KASSERT(softc->inots_freed <= softc->inots_alloced, ("%s: " 1005 "inots_freed %ju > inots_alloced %ju", __func__, 1006 softc->inots_freed, softc->inots_alloced)); 1007 1008 /* 1009 * If we have received all of our CCBs, we can release our 1010 * reference on the peripheral driver. It will probably go away 1011 * now. 1012 */ 1013 if ((softc->atios_freed == softc->atios_alloced) 1014 && (softc->inots_freed == softc->inots_alloced)) { 1015 cam_periph_release_locked(periph); 1016 } 1017 } 1018 1019 static int 1020 ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset) 1021 { 1022 uint64_t lba; 1023 uint32_t num_blocks, nbc; 1024 uint8_t *cmdbyt = (atio->ccb_h.flags & CAM_CDB_POINTER)? 1025 atio->cdb_io.cdb_ptr : atio->cdb_io.cdb_bytes; 1026 1027 nbc = offset >> 9; /* ASSUMING 512 BYTE BLOCKS */ 1028 1029 switch (cmdbyt[0]) { 1030 case READ_6: 1031 case WRITE_6: 1032 { 1033 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt; 1034 lba = scsi_3btoul(cdb->addr); 1035 lba &= 0x1fffff; 1036 num_blocks = cdb->length; 1037 if (num_blocks == 0) 1038 num_blocks = 256; 1039 lba += nbc; 1040 num_blocks -= nbc; 1041 scsi_ulto3b(lba, cdb->addr); 1042 cdb->length = num_blocks; 1043 break; 1044 } 1045 case READ_10: 1046 case WRITE_10: 1047 { 1048 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt; 1049 lba = scsi_4btoul(cdb->addr); 1050 num_blocks = scsi_2btoul(cdb->length); 1051 lba += nbc; 1052 num_blocks -= nbc; 1053 scsi_ulto4b(lba, cdb->addr); 1054 scsi_ulto2b(num_blocks, cdb->length); 1055 break; 1056 } 1057 case READ_12: 1058 case WRITE_12: 1059 { 1060 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt; 1061 lba = scsi_4btoul(cdb->addr); 1062 num_blocks = scsi_4btoul(cdb->length); 1063 lba += nbc; 1064 num_blocks -= nbc; 1065 scsi_ulto4b(lba, cdb->addr); 1066 scsi_ulto4b(num_blocks, cdb->length); 1067 break; 1068 } 1069 case READ_16: 1070 case WRITE_16: 1071 case WRITE_ATOMIC_16: 1072 { 1073 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt; 1074 lba = scsi_8btou64(cdb->addr); 1075 num_blocks = scsi_4btoul(cdb->length); 1076 lba += nbc; 1077 num_blocks -= nbc; 1078 scsi_u64to8b(lba, cdb->addr); 1079 scsi_ulto4b(num_blocks, cdb->length); 1080 break; 1081 } 1082 default: 1083 return -1; 1084 } 1085 return (0); 1086 } 1087 1088 static void 1089 ctlfedone(struct cam_periph *periph, union ccb *done_ccb) 1090 { 1091 struct ctlfe_lun_softc *softc; 1092 struct ctlfe_softc *bus_softc; 1093 struct ctlfe_cmd_info *cmd_info; 1094 struct ccb_accept_tio *atio = NULL; 1095 union ctl_io *io = NULL; 1096 struct mtx *mtx; 1097 1098 KASSERT((done_ccb->ccb_h.flags & CAM_UNLOCKED) != 0, 1099 ("CCB in ctlfedone() without CAM_UNLOCKED flag")); 1100 #ifdef CTLFE_DEBUG 1101 printf("%s: entered, func_code = %#x\n", __func__, 1102 done_ccb->ccb_h.func_code); 1103 #endif 1104 1105 /* 1106 * At this point CTL has no known use case for device queue freezes. 1107 * In case some SIM think different -- drop its freeze right here. 1108 */ 1109 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1110 cam_release_devq(periph->path, 1111 /*relsim_flags*/0, 1112 /*reduction*/0, 1113 /*timeout*/0, 1114 /*getcount_only*/0); 1115 done_ccb->ccb_h.status &= ~CAM_DEV_QFRZN; 1116 } 1117 1118 softc = (struct ctlfe_lun_softc *)periph->softc; 1119 bus_softc = softc->parent_softc; 1120 mtx = cam_periph_mtx(periph); 1121 mtx_lock(mtx); 1122 1123 /* 1124 * If the peripheral is invalid, ATIOs and immediate notify CCBs 1125 * need to be freed. Most of the ATIOs and INOTs that come back 1126 * will be CCBs that are being returned from the SIM as a result of 1127 * our disabling the LUN. 1128 * 1129 * Other CCB types are handled in their respective cases below. 1130 */ 1131 if (periph->flags & CAM_PERIPH_INVALID) { 1132 switch (done_ccb->ccb_h.func_code) { 1133 case XPT_ACCEPT_TARGET_IO: 1134 case XPT_IMMEDIATE_NOTIFY: 1135 case XPT_NOTIFY_ACKNOWLEDGE: 1136 ctlfe_free_ccb(periph, done_ccb); 1137 goto out; 1138 default: 1139 break; 1140 } 1141 1142 } 1143 switch (done_ccb->ccb_h.func_code) { 1144 case XPT_ACCEPT_TARGET_IO: { 1145 1146 atio = &done_ccb->atio; 1147 1148 resubmit: 1149 /* 1150 * Allocate a ctl_io, pass it to CTL, and wait for the 1151 * datamove or done. 1152 */ 1153 mtx_unlock(mtx); 1154 io = done_ccb->ccb_h.io_ptr; 1155 cmd_info = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND2].ptr; 1156 ctl_zero_io(io); 1157 1158 /* Save pointers on both sides */ 1159 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = done_ccb; 1160 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND2].ptr = cmd_info; 1161 done_ccb->ccb_h.io_ptr = io; 1162 1163 /* 1164 * Only SCSI I/O comes down this path, resets, etc. come 1165 * down the immediate notify path below. 1166 */ 1167 io->io_hdr.io_type = CTL_IO_SCSI; 1168 io->io_hdr.nexus.initid = atio->init_id; 1169 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port; 1170 io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun; 1171 io->scsiio.tag_num = atio->tag_id; 1172 switch (atio->tag_action) { 1173 case CAM_TAG_ACTION_NONE: 1174 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 1175 break; 1176 case MSG_SIMPLE_TASK: 1177 io->scsiio.tag_type = CTL_TAG_SIMPLE; 1178 break; 1179 case MSG_HEAD_OF_QUEUE_TASK: 1180 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 1181 break; 1182 case MSG_ORDERED_TASK: 1183 io->scsiio.tag_type = CTL_TAG_ORDERED; 1184 break; 1185 case MSG_ACA_TASK: 1186 io->scsiio.tag_type = CTL_TAG_ACA; 1187 break; 1188 default: 1189 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 1190 printf("%s: unhandled tag type %#x!!\n", __func__, 1191 atio->tag_action); 1192 break; 1193 } 1194 if (atio->cdb_len > sizeof(io->scsiio.cdb)) { 1195 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 1196 __func__, atio->cdb_len, sizeof(io->scsiio.cdb)); 1197 } 1198 io->scsiio.cdb_len = min(atio->cdb_len, sizeof(io->scsiio.cdb)); 1199 bcopy(atio->cdb_io.cdb_bytes, io->scsiio.cdb, 1200 io->scsiio.cdb_len); 1201 1202 #ifdef CTLFEDEBUG 1203 printf("%s: %u:%u:%u: tag %04x CDB %02x\n", __func__, 1204 io->io_hdr.nexus.initid, 1205 io->io_hdr.nexus.targ_port, 1206 io->io_hdr.nexus.targ_lun, 1207 io->scsiio.tag_num, io->scsiio.cdb[0]); 1208 #endif 1209 1210 ctl_queue(io); 1211 return; 1212 } 1213 case XPT_CONT_TARGET_IO: { 1214 int srr = 0; 1215 uint32_t srr_off = 0; 1216 1217 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio; 1218 io = (union ctl_io *)atio->ccb_h.io_ptr; 1219 1220 softc->ctios_returned++; 1221 #ifdef CTLFEDEBUG 1222 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n", 1223 __func__, atio->tag_id, done_ccb->ccb_h.flags); 1224 #endif 1225 /* 1226 * Handle SRR case were the data pointer is pushed back hack 1227 */ 1228 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV 1229 && done_ccb->csio.msg_ptr != NULL 1230 && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED 1231 && done_ccb->csio.msg_ptr[1] == 5 1232 && done_ccb->csio.msg_ptr[2] == 0) { 1233 srr = 1; 1234 srr_off = 1235 (done_ccb->csio.msg_ptr[3] << 24) 1236 | (done_ccb->csio.msg_ptr[4] << 16) 1237 | (done_ccb->csio.msg_ptr[5] << 8) 1238 | (done_ccb->csio.msg_ptr[6]); 1239 } 1240 1241 if (srr && (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) { 1242 /* 1243 * If status was being sent, the back end data is now 1244 * history. Hack it up and resubmit a new command with 1245 * the CDB adjusted. If the SIM does the right thing, 1246 * all of the resid math should work. 1247 */ 1248 softc->ccbs_freed++; 1249 xpt_release_ccb(done_ccb); 1250 if (ctlfe_adjust_cdb(atio, srr_off) == 0) { 1251 done_ccb = (union ccb *)atio; 1252 goto resubmit; 1253 } 1254 /* 1255 * Fall through to doom.... 1256 */ 1257 } else if (srr) { 1258 /* 1259 * If we have an srr and we're still sending data, we 1260 * should be able to adjust offsets and cycle again. 1261 */ 1262 io->scsiio.kern_rel_offset = 1263 io->scsiio.ext_data_filled = srr_off; 1264 io->scsiio.ext_data_len = io->scsiio.kern_total_len - 1265 io->scsiio.kern_rel_offset; 1266 softc->ccbs_freed++; 1267 io->scsiio.io_hdr.status = CTL_STATUS_NONE; 1268 xpt_release_ccb(done_ccb); 1269 TAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h, 1270 periph_links.tqe); 1271 xpt_schedule(periph, /*priority*/ 1); 1272 break; 1273 } 1274 1275 if ((done_ccb->ccb_h.flags & CAM_SEND_STATUS) && 1276 (done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) 1277 io->io_hdr.flags |= CTL_FLAG_STATUS_SENT; 1278 1279 /* 1280 * If we were sending status back to the initiator, free up 1281 * resources. If we were doing a datamove, call the 1282 * datamove done routine. 1283 */ 1284 if ((io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) { 1285 softc->ccbs_freed++; 1286 xpt_release_ccb(done_ccb); 1287 /* 1288 * For a wildcard attachment, commands can come in 1289 * with a specific target/lun. Reset the target 1290 * and LUN fields back to the wildcard values before 1291 * we send them back down to the SIM. The SIM has 1292 * a wildcard LUN enabled, not whatever target/lun 1293 * these happened to be. 1294 */ 1295 if (softc->flags & CTLFE_LUN_WILDCARD) { 1296 atio->ccb_h.target_id = CAM_TARGET_WILDCARD; 1297 atio->ccb_h.target_lun = CAM_LUN_WILDCARD; 1298 } 1299 if (periph->flags & CAM_PERIPH_INVALID) { 1300 ctlfe_free_ccb(periph, (union ccb *)atio); 1301 } else { 1302 mtx_unlock(mtx); 1303 xpt_action((union ccb *)atio); 1304 return; 1305 } 1306 } else { 1307 struct ctlfe_cmd_info *cmd_info; 1308 struct ccb_scsiio *csio; 1309 1310 csio = &done_ccb->csio; 1311 cmd_info = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND2].ptr; 1312 1313 io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG; 1314 1315 io->scsiio.ext_data_len += csio->dxfer_len; 1316 if (io->scsiio.ext_data_len > 1317 io->scsiio.kern_total_len) { 1318 xpt_print(periph->path, "%s: tag 0x%04x " 1319 "done len %u > total %u sent %u\n", 1320 __func__, io->scsiio.tag_num, 1321 io->scsiio.ext_data_len, 1322 io->scsiio.kern_total_len, 1323 io->scsiio.ext_data_filled); 1324 } 1325 /* 1326 * Translate CAM status to CTL status. Success 1327 * does not change the overall, ctl_io status. In 1328 * that case we just set port_status to 0. If we 1329 * have a failure, though, set a data phase error 1330 * for the overall ctl_io. 1331 */ 1332 switch (done_ccb->ccb_h.status & CAM_STATUS_MASK) { 1333 case CAM_REQ_CMP: 1334 io->io_hdr.port_status = 0; 1335 break; 1336 default: 1337 /* 1338 * XXX KDM we probably need to figure out a 1339 * standard set of errors that the SIM 1340 * drivers should return in the event of a 1341 * data transfer failure. A data phase 1342 * error will at least point the user to a 1343 * data transfer error of some sort. 1344 * Hopefully the SIM printed out some 1345 * additional information to give the user 1346 * a clue what happened. 1347 */ 1348 io->io_hdr.port_status = 0xbad1; 1349 ctl_set_data_phase_error(&io->scsiio); 1350 /* 1351 * XXX KDM figure out residual. 1352 */ 1353 break; 1354 } 1355 /* 1356 * If we had to break this S/G list into multiple 1357 * pieces, figure out where we are in the list, and 1358 * continue sending pieces if necessary. 1359 */ 1360 if ((cmd_info->flags & CTLFE_CMD_PIECEWISE) 1361 && (io->io_hdr.port_status == 0)) { 1362 ccb_flags flags; 1363 uint8_t scsi_status; 1364 uint8_t *data_ptr; 1365 uint32_t dxfer_len; 1366 1367 flags = atio->ccb_h.flags & 1368 (CAM_DIS_DISCONNECT| 1369 CAM_TAG_ACTION_VALID); 1370 1371 ctlfedata(softc, io, &flags, &data_ptr, 1372 &dxfer_len, &csio->sglist_cnt); 1373 1374 scsi_status = 0; 1375 1376 if (((flags & CAM_SEND_STATUS) == 0) 1377 && (dxfer_len == 0)) { 1378 printf("%s: tag %04x no status or " 1379 "len cdb = %02x\n", __func__, 1380 atio->tag_id, 1381 atio->cdb_io.cdb_bytes[0]); 1382 printf("%s: tag %04x io status %#x\n", 1383 __func__, atio->tag_id, 1384 io->io_hdr.status); 1385 } 1386 1387 cam_fill_ctio(csio, 1388 /*retries*/ 2, 1389 ctlfedone, 1390 flags, 1391 (flags & CAM_TAG_ACTION_VALID) ? 1392 MSG_SIMPLE_Q_TAG : 0, 1393 atio->tag_id, 1394 atio->init_id, 1395 scsi_status, 1396 /*data_ptr*/ data_ptr, 1397 /*dxfer_len*/ dxfer_len, 1398 /*timeout*/ 5 * 1000); 1399 1400 csio->ccb_h.flags |= CAM_UNLOCKED; 1401 csio->resid = 0; 1402 csio->ccb_h.ccb_atio = atio; 1403 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG; 1404 softc->ctios_sent++; 1405 mtx_unlock(mtx); 1406 xpt_action((union ccb *)csio); 1407 } else { 1408 /* 1409 * Release the CTIO. The ATIO will be sent back 1410 * down to the SIM once we send status. 1411 */ 1412 softc->ccbs_freed++; 1413 xpt_release_ccb(done_ccb); 1414 mtx_unlock(mtx); 1415 1416 /* Call the backend move done callback */ 1417 io->scsiio.be_move_done(io); 1418 } 1419 return; 1420 } 1421 break; 1422 } 1423 case XPT_IMMEDIATE_NOTIFY: { 1424 union ctl_io *io; 1425 struct ccb_immediate_notify *inot; 1426 cam_status status; 1427 int send_ctl_io; 1428 1429 inot = &done_ccb->cin1; 1430 printf("%s: got XPT_IMMEDIATE_NOTIFY status %#x tag %#x " 1431 "seq %#x\n", __func__, inot->ccb_h.status, 1432 inot->tag_id, inot->seq_id); 1433 1434 io = done_ccb->ccb_h.io_ptr; 1435 ctl_zero_io(io); 1436 1437 send_ctl_io = 1; 1438 1439 io->io_hdr.io_type = CTL_IO_TASK; 1440 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr =done_ccb; 1441 inot->ccb_h.io_ptr = io; 1442 io->io_hdr.nexus.initid = inot->initiator_id; 1443 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port; 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 break; 1531 } 1532 case XPT_NOTIFY_ACKNOWLEDGE: 1533 /* 1534 * Queue this back down to the SIM as an immediate notify. 1535 */ 1536 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY; 1537 xpt_action(done_ccb); 1538 break; 1539 case XPT_SET_SIM_KNOB: 1540 case XPT_GET_SIM_KNOB: 1541 break; 1542 default: 1543 panic("%s: unexpected CCB type %#x", __func__, 1544 done_ccb->ccb_h.func_code); 1545 break; 1546 } 1547 1548 out: 1549 mtx_unlock(mtx); 1550 } 1551 1552 static void 1553 ctlfe_onoffline(void *arg, int online) 1554 { 1555 struct ctlfe_softc *bus_softc; 1556 union ccb *ccb; 1557 cam_status status; 1558 struct cam_path *path; 1559 int set_wwnn; 1560 1561 bus_softc = (struct ctlfe_softc *)arg; 1562 1563 set_wwnn = 0; 1564 1565 status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id, 1566 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1567 if (status != CAM_REQ_CMP) { 1568 printf("%s: unable to create path!\n", __func__); 1569 return; 1570 } 1571 ccb = xpt_alloc_ccb(); 1572 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE); 1573 ccb->ccb_h.func_code = XPT_GET_SIM_KNOB; 1574 xpt_action(ccb); 1575 1576 /* 1577 * Copan WWN format: 1578 * 1579 * Bits 63-60: 0x5 NAA, IEEE registered name 1580 * Bits 59-36: 0x000ED5 IEEE Company name assigned to Copan 1581 * Bits 35-12: Copan SSN (Sequential Serial Number) 1582 * Bits 11-8: Type of port: 1583 * 1 == N-Port 1584 * 2 == F-Port 1585 * 3 == NL-Port 1586 * Bits 7-0: 0 == Node Name, >0 == Port Number 1587 */ 1588 if (online != 0) { 1589 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){ 1590 #ifdef RANDOM_WWNN 1591 uint64_t random_bits; 1592 #endif 1593 1594 printf("%s: %s current WWNN %#jx\n", __func__, 1595 bus_softc->port_name, 1596 ccb->knob.xport_specific.fc.wwnn); 1597 printf("%s: %s current WWPN %#jx\n", __func__, 1598 bus_softc->port_name, 1599 ccb->knob.xport_specific.fc.wwpn); 1600 1601 #ifdef RANDOM_WWNN 1602 arc4rand(&random_bits, sizeof(random_bits), 0); 1603 #endif 1604 1605 /* 1606 * XXX KDM this is a bit of a kludge for now. We 1607 * take the current WWNN/WWPN from the card, and 1608 * replace the company identifier and the NL-Port 1609 * indicator and the port number (for the WWPN). 1610 * This should be replaced later with ddb_GetWWNN, 1611 * or possibly a more centralized scheme. (It 1612 * would be nice to have the WWNN/WWPN for each 1613 * port stored in the ctl_port structure.) 1614 */ 1615 #ifdef RANDOM_WWNN 1616 ccb->knob.xport_specific.fc.wwnn = 1617 (random_bits & 1618 0x0000000fffffff00ULL) | 1619 /* Company ID */ 0x5000ED5000000000ULL | 1620 /* NL-Port */ 0x0300; 1621 ccb->knob.xport_specific.fc.wwpn = 1622 (random_bits & 1623 0x0000000fffffff00ULL) | 1624 /* Company ID */ 0x5000ED5000000000ULL | 1625 /* NL-Port */ 0x3000 | 1626 /* Port Num */ (bus_softc->port.targ_port & 0xff); 1627 1628 /* 1629 * This is a bit of an API break/reversal, but if 1630 * we're doing the random WWNN that's a little 1631 * different anyway. So record what we're actually 1632 * using with the frontend code so it's reported 1633 * accurately. 1634 */ 1635 ctl_port_set_wwns(&bus_softc->port, 1636 true, ccb->knob.xport_specific.fc.wwnn, 1637 true, ccb->knob.xport_specific.fc.wwpn); 1638 set_wwnn = 1; 1639 #else /* RANDOM_WWNN */ 1640 /* 1641 * If the user has specified a WWNN/WWPN, send them 1642 * down to the SIM. Otherwise, record what the SIM 1643 * has reported. 1644 */ 1645 if (bus_softc->port.wwnn != 0 && bus_softc->port.wwnn 1646 != ccb->knob.xport_specific.fc.wwnn) { 1647 ccb->knob.xport_specific.fc.wwnn = 1648 bus_softc->port.wwnn; 1649 set_wwnn = 1; 1650 } else { 1651 ctl_port_set_wwns(&bus_softc->port, 1652 true, ccb->knob.xport_specific.fc.wwnn, 1653 false, 0); 1654 } 1655 if (bus_softc->port.wwpn != 0 && bus_softc->port.wwpn 1656 != ccb->knob.xport_specific.fc.wwpn) { 1657 ccb->knob.xport_specific.fc.wwpn = 1658 bus_softc->port.wwpn; 1659 set_wwnn = 1; 1660 } else { 1661 ctl_port_set_wwns(&bus_softc->port, 1662 false, 0, 1663 true, ccb->knob.xport_specific.fc.wwpn); 1664 } 1665 #endif /* RANDOM_WWNN */ 1666 1667 1668 if (set_wwnn != 0) { 1669 printf("%s: %s new WWNN %#jx\n", __func__, 1670 bus_softc->port_name, 1671 ccb->knob.xport_specific.fc.wwnn); 1672 printf("%s: %s new WWPN %#jx\n", __func__, 1673 bus_softc->port_name, 1674 ccb->knob.xport_specific.fc.wwpn); 1675 } 1676 } else { 1677 printf("%s: %s has no valid WWNN/WWPN\n", __func__, 1678 bus_softc->port_name); 1679 } 1680 } 1681 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB; 1682 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE; 1683 if (set_wwnn != 0) 1684 ccb->knob.xport_specific.valid |= KNOB_VALID_ADDRESS; 1685 1686 if (online != 0) 1687 ccb->knob.xport_specific.fc.role |= KNOB_ROLE_TARGET; 1688 else 1689 ccb->knob.xport_specific.fc.role &= ~KNOB_ROLE_TARGET; 1690 1691 xpt_action(ccb); 1692 1693 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1694 printf("%s: SIM %s (path id %d) target %s failed with " 1695 "status %#x\n", 1696 __func__, bus_softc->port_name, bus_softc->path_id, 1697 (online != 0) ? "enable" : "disable", 1698 ccb->ccb_h.status); 1699 } else { 1700 printf("%s: SIM %s (path id %d) target %s succeeded\n", 1701 __func__, bus_softc->port_name, bus_softc->path_id, 1702 (online != 0) ? "enable" : "disable"); 1703 } 1704 1705 xpt_free_path(path); 1706 xpt_free_ccb(ccb); 1707 } 1708 1709 static void 1710 ctlfe_online(void *arg) 1711 { 1712 struct ctlfe_softc *bus_softc; 1713 struct cam_path *path; 1714 cam_status status; 1715 struct ctlfe_lun_softc *lun_softc; 1716 struct cam_periph *periph; 1717 1718 bus_softc = (struct ctlfe_softc *)arg; 1719 1720 /* 1721 * Create the wildcard LUN before bringing the port online. 1722 */ 1723 status = xpt_create_path(&path, /*periph*/ NULL, 1724 bus_softc->path_id, CAM_TARGET_WILDCARD, 1725 CAM_LUN_WILDCARD); 1726 if (status != CAM_REQ_CMP) { 1727 printf("%s: unable to create path for wildcard periph\n", 1728 __func__); 1729 return; 1730 } 1731 1732 lun_softc = malloc(sizeof(*lun_softc), M_CTLFE, M_WAITOK | M_ZERO); 1733 1734 xpt_path_lock(path); 1735 periph = cam_periph_find(path, "ctl"); 1736 if (periph != NULL) { 1737 /* We've already got a periph, no need to alloc a new one. */ 1738 xpt_path_unlock(path); 1739 xpt_free_path(path); 1740 free(lun_softc, M_CTLFE); 1741 return; 1742 } 1743 lun_softc->parent_softc = bus_softc; 1744 lun_softc->flags |= CTLFE_LUN_WILDCARD; 1745 1746 status = cam_periph_alloc(ctlferegister, 1747 ctlfeoninvalidate, 1748 ctlfecleanup, 1749 ctlfestart, 1750 "ctl", 1751 CAM_PERIPH_BIO, 1752 path, 1753 ctlfeasync, 1754 0, 1755 lun_softc); 1756 1757 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1758 const struct cam_status_entry *entry; 1759 1760 entry = cam_fetch_status_entry(status); 1761 printf("%s: CAM error %s (%#x) returned from " 1762 "cam_periph_alloc()\n", __func__, (entry != NULL) ? 1763 entry->status_text : "Unknown", status); 1764 free(lun_softc, M_CTLFE); 1765 } 1766 1767 xpt_path_unlock(path); 1768 ctlfe_onoffline(arg, /*online*/ 1); 1769 xpt_free_path(path); 1770 } 1771 1772 static void 1773 ctlfe_offline(void *arg) 1774 { 1775 struct ctlfe_softc *bus_softc; 1776 struct cam_path *path; 1777 cam_status status; 1778 struct cam_periph *periph; 1779 1780 bus_softc = (struct ctlfe_softc *)arg; 1781 1782 ctlfe_onoffline(arg, /*online*/ 0); 1783 1784 /* 1785 * Disable the wildcard LUN for this port now that we have taken 1786 * the port offline. 1787 */ 1788 status = xpt_create_path(&path, /*periph*/ NULL, 1789 bus_softc->path_id, CAM_TARGET_WILDCARD, 1790 CAM_LUN_WILDCARD); 1791 if (status != CAM_REQ_CMP) { 1792 printf("%s: unable to create path for wildcard periph\n", 1793 __func__); 1794 return; 1795 } 1796 xpt_path_lock(path); 1797 if ((periph = cam_periph_find(path, "ctl")) != NULL) 1798 cam_periph_invalidate(periph); 1799 xpt_path_unlock(path); 1800 xpt_free_path(path); 1801 } 1802 1803 /* 1804 * This will get called to enable a LUN on every bus that is attached to 1805 * CTL. So we only need to create a path/periph for this particular bus. 1806 */ 1807 static int 1808 ctlfe_lun_enable(void *arg, int lun_id) 1809 { 1810 struct ctlfe_softc *bus_softc; 1811 struct ctlfe_lun_softc *softc; 1812 struct cam_path *path; 1813 struct cam_periph *periph; 1814 cam_status status; 1815 1816 bus_softc = (struct ctlfe_softc *)arg; 1817 1818 status = xpt_create_path(&path, /*periph*/ NULL, 1819 bus_softc->path_id, bus_softc->target_id, lun_id); 1820 /* XXX KDM need some way to return status to CTL here? */ 1821 if (status != CAM_REQ_CMP) { 1822 printf("%s: could not create path, status %#x\n", __func__, 1823 status); 1824 return (1); 1825 } 1826 1827 softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO); 1828 xpt_path_lock(path); 1829 periph = cam_periph_find(path, "ctl"); 1830 if (periph != NULL) { 1831 /* We've already got a periph, no need to alloc a new one. */ 1832 xpt_path_unlock(path); 1833 xpt_free_path(path); 1834 free(softc, M_CTLFE); 1835 return (0); 1836 } 1837 softc->parent_softc = bus_softc; 1838 1839 status = cam_periph_alloc(ctlferegister, 1840 ctlfeoninvalidate, 1841 ctlfecleanup, 1842 ctlfestart, 1843 "ctl", 1844 CAM_PERIPH_BIO, 1845 path, 1846 ctlfeasync, 1847 0, 1848 softc); 1849 1850 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1851 const struct cam_status_entry *entry; 1852 1853 entry = cam_fetch_status_entry(status); 1854 printf("%s: CAM error %s (%#x) returned from " 1855 "cam_periph_alloc()\n", __func__, (entry != NULL) ? 1856 entry->status_text : "Unknown", status); 1857 free(softc, M_CTLFE); 1858 } 1859 1860 xpt_path_unlock(path); 1861 xpt_free_path(path); 1862 return (0); 1863 } 1864 1865 /* 1866 * This will get called when the user removes a LUN to disable that LUN 1867 * on every bus that is attached to CTL. 1868 */ 1869 static int 1870 ctlfe_lun_disable(void *arg, int lun_id) 1871 { 1872 struct ctlfe_softc *softc; 1873 struct ctlfe_lun_softc *lun_softc; 1874 1875 softc = (struct ctlfe_softc *)arg; 1876 1877 mtx_lock(&softc->lun_softc_mtx); 1878 STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) { 1879 struct cam_path *path; 1880 1881 path = lun_softc->periph->path; 1882 1883 if ((xpt_path_target_id(path) == 0) 1884 && (xpt_path_lun_id(path) == lun_id)) { 1885 break; 1886 } 1887 } 1888 if (lun_softc == NULL) { 1889 mtx_unlock(&softc->lun_softc_mtx); 1890 printf("%s: can't find lun %d\n", __func__, lun_id); 1891 return (1); 1892 } 1893 cam_periph_acquire(lun_softc->periph); 1894 mtx_unlock(&softc->lun_softc_mtx); 1895 1896 cam_periph_lock(lun_softc->periph); 1897 cam_periph_invalidate(lun_softc->periph); 1898 cam_periph_unlock(lun_softc->periph); 1899 cam_periph_release(lun_softc->periph); 1900 return (0); 1901 } 1902 1903 static void 1904 ctlfe_dump_sim(struct cam_sim *sim) 1905 { 1906 1907 printf("%s%d: max tagged openings: %d, max dev openings: %d\n", 1908 sim->sim_name, sim->unit_number, 1909 sim->max_tagged_dev_openings, sim->max_dev_openings); 1910 } 1911 1912 /* 1913 * Assumes that the SIM lock is held. 1914 */ 1915 static void 1916 ctlfe_dump_queue(struct ctlfe_lun_softc *softc) 1917 { 1918 struct ccb_hdr *hdr; 1919 struct cam_periph *periph; 1920 int num_items; 1921 1922 periph = softc->periph; 1923 num_items = 0; 1924 1925 TAILQ_FOREACH(hdr, &softc->work_queue, periph_links.tqe) { 1926 union ctl_io *io = hdr->io_ptr; 1927 1928 num_items++; 1929 1930 /* 1931 * Only regular SCSI I/O is put on the work 1932 * queue, so we can print sense here. There may be no 1933 * sense if it's no the queue for a DMA, but this serves to 1934 * print out the CCB as well. 1935 * 1936 * XXX KDM switch this over to scsi_sense_print() when 1937 * CTL is merged in with CAM. 1938 */ 1939 ctl_io_error_print(io, NULL); 1940 1941 /* 1942 * Print DMA status if we are DMA_QUEUED. 1943 */ 1944 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) { 1945 xpt_print(periph->path, 1946 "Total %u, Current %u, Resid %u\n", 1947 io->scsiio.kern_total_len, 1948 io->scsiio.kern_data_len, 1949 io->scsiio.kern_data_resid); 1950 } 1951 } 1952 1953 xpt_print(periph->path, "%d requests total waiting for CCBs\n", 1954 num_items); 1955 xpt_print(periph->path, "%ju CCBs outstanding (%ju allocated, %ju " 1956 "freed)\n", (uintmax_t)(softc->ccbs_alloced - 1957 softc->ccbs_freed), (uintmax_t)softc->ccbs_alloced, 1958 (uintmax_t)softc->ccbs_freed); 1959 xpt_print(periph->path, "%ju CTIOs outstanding (%ju sent, %ju " 1960 "returned\n", (uintmax_t)(softc->ctios_sent - 1961 softc->ctios_returned), softc->ctios_sent, 1962 softc->ctios_returned); 1963 } 1964 1965 /* 1966 * Datamove/done routine called by CTL. Put ourselves on the queue to 1967 * receive a CCB from CAM so we can queue the continue I/O request down 1968 * to the adapter. 1969 */ 1970 static void 1971 ctlfe_datamove(union ctl_io *io) 1972 { 1973 union ccb *ccb; 1974 struct cam_periph *periph; 1975 struct ctlfe_lun_softc *softc; 1976 1977 KASSERT(io->io_hdr.io_type == CTL_IO_SCSI, 1978 ("Unexpected io_type (%d) in ctlfe_datamove", io->io_hdr.io_type)); 1979 1980 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1981 periph = xpt_path_periph(ccb->ccb_h.path); 1982 cam_periph_lock(periph); 1983 softc = (struct ctlfe_lun_softc *)periph->softc; 1984 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED; 1985 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) 1986 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED; 1987 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h, 1988 periph_links.tqe); 1989 xpt_schedule(periph, /*priority*/ 1); 1990 cam_periph_unlock(periph); 1991 } 1992 1993 static void 1994 ctlfe_done(union ctl_io *io) 1995 { 1996 union ccb *ccb; 1997 struct cam_periph *periph; 1998 struct ctlfe_lun_softc *softc; 1999 2000 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2001 periph = xpt_path_periph(ccb->ccb_h.path); 2002 cam_periph_lock(periph); 2003 softc = (struct ctlfe_lun_softc *)periph->softc; 2004 2005 if (io->io_hdr.io_type == CTL_IO_TASK) { 2006 /* 2007 * Task management commands don't require any further 2008 * communication back to the adapter. Requeue the CCB 2009 * to the adapter, and free the CTL I/O. 2010 */ 2011 xpt_print(ccb->ccb_h.path, "%s: returning task I/O " 2012 "tag %#x seq %#x\n", __func__, 2013 ccb->cin1.tag_id, ccb->cin1.seq_id); 2014 /* 2015 * Send the notify acknowledge down to the SIM, to let it 2016 * know we processed the task management command. 2017 */ 2018 ccb->ccb_h.status = CAM_REQ_INPROG; 2019 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE; 2020 xpt_action(ccb); 2021 } else if (io->io_hdr.flags & CTL_FLAG_STATUS_SENT) { 2022 if (softc->flags & CTLFE_LUN_WILDCARD) { 2023 ccb->ccb_h.target_id = CAM_TARGET_WILDCARD; 2024 ccb->ccb_h.target_lun = CAM_LUN_WILDCARD; 2025 } 2026 if (periph->flags & CAM_PERIPH_INVALID) { 2027 ctlfe_free_ccb(periph, ccb); 2028 } else { 2029 cam_periph_unlock(periph); 2030 xpt_action(ccb); 2031 return; 2032 } 2033 } else { 2034 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED; 2035 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h, 2036 periph_links.tqe); 2037 xpt_schedule(periph, /*priority*/ 1); 2038 } 2039 2040 cam_periph_unlock(periph); 2041 } 2042 2043 static void 2044 ctlfe_dump(void) 2045 { 2046 struct ctlfe_softc *bus_softc; 2047 struct ctlfe_lun_softc *lun_softc; 2048 2049 STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) { 2050 ctlfe_dump_sim(bus_softc->sim); 2051 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links) 2052 ctlfe_dump_queue(lun_softc); 2053 } 2054 } 2055