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 typedef enum { 76 CTLFE_CCB_DEFAULT = 0x00 77 } ctlfe_ccb_types; 78 79 struct ctlfe_softc { 80 struct ctl_port port; 81 path_id_t path_id; 82 u_int maxio; 83 struct cam_sim *sim; 84 char port_name[DEV_IDLEN]; 85 struct mtx lun_softc_mtx; 86 STAILQ_HEAD(, ctlfe_lun_softc) lun_softc_list; 87 STAILQ_ENTRY(ctlfe_softc) links; 88 }; 89 90 STAILQ_HEAD(, ctlfe_softc) ctlfe_softc_list; 91 struct mtx ctlfe_list_mtx; 92 static char ctlfe_mtx_desc[] = "ctlfelist"; 93 static int ctlfe_dma_enabled = 1; 94 #ifdef CTLFE_INIT_ENABLE 95 static int ctlfe_max_targets = 1; 96 static int ctlfe_num_targets = 0; 97 #endif 98 99 typedef enum { 100 CTLFE_LUN_NONE = 0x00, 101 CTLFE_LUN_WILDCARD = 0x01 102 } ctlfe_lun_flags; 103 104 struct ctlfe_lun_softc { 105 struct ctlfe_softc *parent_softc; 106 struct cam_periph *periph; 107 ctlfe_lun_flags flags; 108 struct callout dma_callout; 109 uint64_t ccbs_alloced; 110 uint64_t ccbs_freed; 111 uint64_t ctios_sent; 112 uint64_t ctios_returned; 113 uint64_t atios_sent; 114 uint64_t atios_returned; 115 uint64_t inots_sent; 116 uint64_t inots_returned; 117 /* bus_dma_tag_t dma_tag; */ 118 TAILQ_HEAD(, ccb_hdr) work_queue; 119 STAILQ_ENTRY(ctlfe_lun_softc) links; 120 }; 121 122 typedef enum { 123 CTLFE_CMD_NONE = 0x00, 124 CTLFE_CMD_PIECEWISE = 0x01 125 } ctlfe_cmd_flags; 126 127 /* 128 * The size limit of this structure is CTL_PORT_PRIV_SIZE, from ctl_io.h. 129 * Currently that is 600 bytes. 130 */ 131 struct ctlfe_lun_cmd_info { 132 int cur_transfer_index; 133 size_t cur_transfer_off; 134 ctlfe_cmd_flags flags; 135 /* 136 * XXX KDM struct bus_dma_segment is 8 bytes on i386, and 16 137 * bytes on amd64. So with 32 elements, this is 256 bytes on 138 * i386 and 512 bytes on amd64. 139 */ 140 #define CTLFE_MAX_SEGS 32 141 bus_dma_segment_t cam_sglist[CTLFE_MAX_SEGS]; 142 }; 143 144 /* 145 * When we register the adapter/bus, request that this many ctl_ios be 146 * allocated. This should be the maximum supported by the adapter, but we 147 * currently don't have a way to get that back from the path inquiry. 148 * XXX KDM add that to the path inquiry. 149 */ 150 #define CTLFE_REQ_CTL_IO 4096 151 /* 152 * Number of Accept Target I/O CCBs to allocate and queue down to the 153 * adapter per LUN. 154 * XXX KDM should this be controlled by CTL? 155 */ 156 #define CTLFE_ATIO_PER_LUN 1024 157 /* 158 * Number of Immediate Notify CCBs (used for aborts, resets, etc.) to 159 * allocate and queue down to the adapter per LUN. 160 * XXX KDM should this be controlled by CTL? 161 */ 162 #define CTLFE_IN_PER_LUN 1024 163 164 /* 165 * Timeout (in seconds) on CTIO CCB allocation for doing a DMA or sending 166 * status to the initiator. The SIM is expected to have its own timeouts, 167 * so we're not putting this timeout around the CCB execution time. The 168 * SIM should timeout and let us know if it has an issue. 169 */ 170 #define CTLFE_DMA_TIMEOUT 60 171 172 /* 173 * Turn this on to enable extra debugging prints. 174 */ 175 #if 0 176 #define CTLFE_DEBUG 177 #endif 178 179 /* 180 * Use randomly assigned WWNN/WWPN values. This is to work around an issue 181 * in the FreeBSD initiator that makes it unable to rescan the target if 182 * the target gets rebooted and the WWNN/WWPN stay the same. 183 */ 184 #if 0 185 #define RANDOM_WWNN 186 #endif 187 188 SYSCTL_INT(_kern_cam_ctl, OID_AUTO, dma_enabled, CTLFLAG_RW, 189 &ctlfe_dma_enabled, 0, "DMA enabled"); 190 MALLOC_DEFINE(M_CTLFE, "CAM CTL FE", "CAM CTL FE interface"); 191 192 #define ccb_type ppriv_field0 193 /* This is only used in the ATIO */ 194 #define io_ptr ppriv_ptr1 195 196 /* This is only used in the CTIO */ 197 #define ccb_atio ppriv_ptr1 198 199 int ctlfeinitialize(void); 200 void ctlfeshutdown(void); 201 static periph_init_t ctlfeperiphinit; 202 static void ctlfeasync(void *callback_arg, uint32_t code, 203 struct cam_path *path, void *arg); 204 static periph_ctor_t ctlferegister; 205 static periph_oninv_t ctlfeoninvalidate; 206 static periph_dtor_t ctlfecleanup; 207 static periph_start_t ctlfestart; 208 static void ctlfedone(struct cam_periph *periph, 209 union ccb *done_ccb); 210 211 static void ctlfe_onoffline(void *arg, int online); 212 static void ctlfe_online(void *arg); 213 static void ctlfe_offline(void *arg); 214 static int ctlfe_lun_enable(void *arg, struct ctl_id targ_id, 215 int lun_id); 216 static int ctlfe_lun_disable(void *arg, struct ctl_id targ_id, 217 int lun_id); 218 static void ctlfe_dump_sim(struct cam_sim *sim); 219 static void ctlfe_dump_queue(struct ctlfe_lun_softc *softc); 220 static void ctlfe_dma_timeout(void *arg); 221 static void ctlfe_datamove_done(union ctl_io *io); 222 static void ctlfe_dump(void); 223 224 static struct periph_driver ctlfe_driver = 225 { 226 ctlfeperiphinit, "ctl", 227 TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0 228 }; 229 230 static struct ctl_frontend ctlfe_frontend = 231 { 232 .name = "camtarget", 233 .init = ctlfeinitialize, 234 .fe_dump = ctlfe_dump, 235 .shutdown = ctlfeshutdown, 236 }; 237 CTL_FRONTEND_DECLARE(ctlfe, ctlfe_frontend); 238 239 extern struct ctl_softc *control_softc; 240 241 void 242 ctlfeshutdown(void) 243 { 244 return; 245 } 246 247 int 248 ctlfeinitialize(void) 249 { 250 251 STAILQ_INIT(&ctlfe_softc_list); 252 mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF); 253 periphdriver_register(&ctlfe_driver); 254 return (0); 255 } 256 257 void 258 ctlfeperiphinit(void) 259 { 260 cam_status status; 261 262 status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED | 263 AC_CONTRACT, ctlfeasync, NULL, NULL); 264 if (status != CAM_REQ_CMP) { 265 printf("ctl: Failed to attach async callback due to CAM " 266 "status 0x%x!\n", status); 267 } 268 } 269 270 static void 271 ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 272 { 273 274 #ifdef CTLFEDEBUG 275 printf("%s: entered\n", __func__); 276 #endif 277 278 /* 279 * When a new path gets registered, and it is capable of target 280 * mode, go ahead and attach. Later on, we may need to be more 281 * selective, but for now this will be sufficient. 282 */ 283 switch (code) { 284 case AC_PATH_REGISTERED: { 285 struct ctl_port *port; 286 struct ctlfe_softc *bus_softc; 287 struct ccb_pathinq *cpi; 288 int retval; 289 290 cpi = (struct ccb_pathinq *)arg; 291 292 /* Don't attach if it doesn't support target mode */ 293 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) { 294 #ifdef CTLFEDEBUG 295 printf("%s: SIM %s%d doesn't support target mode\n", 296 __func__, cpi->dev_name, cpi->unit_number); 297 #endif 298 break; 299 } 300 301 #ifdef CTLFE_INIT_ENABLE 302 if (ctlfe_num_targets >= ctlfe_max_targets) { 303 union ccb *ccb; 304 305 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP, 306 M_NOWAIT | M_ZERO); 307 if (ccb == NULL) { 308 printf("%s: unable to malloc CCB!\n", __func__); 309 return; 310 } 311 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE); 312 313 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB; 314 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE; 315 ccb->knob.xport_specific.fc.role = KNOB_ROLE_INITIATOR; 316 317 xpt_action(ccb); 318 319 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 320 CAM_REQ_CMP) { 321 printf("%s: SIM %s%d (path id %d) initiator " 322 "enable failed with status %#x\n", 323 __func__, cpi->dev_name, 324 cpi->unit_number, cpi->ccb_h.path_id, 325 ccb->ccb_h.status); 326 } else { 327 printf("%s: SIM %s%d (path id %d) initiator " 328 "enable succeeded\n", 329 __func__, cpi->dev_name, 330 cpi->unit_number, cpi->ccb_h.path_id); 331 } 332 333 free(ccb, M_TEMP); 334 335 break; 336 } else { 337 ctlfe_num_targets++; 338 } 339 340 printf("%s: ctlfe_num_targets = %d\n", __func__, 341 ctlfe_num_targets); 342 #endif /* CTLFE_INIT_ENABLE */ 343 344 /* 345 * We're in an interrupt context here, so we have to 346 * use M_NOWAIT. Of course this means trouble if we 347 * can't allocate memory. 348 */ 349 bus_softc = malloc(sizeof(*bus_softc), M_CTLFE, 350 M_NOWAIT | M_ZERO); 351 if (bus_softc == NULL) { 352 printf("%s: unable to malloc %zd bytes for softc\n", 353 __func__, sizeof(*bus_softc)); 354 return; 355 } 356 357 bus_softc->path_id = cpi->ccb_h.path_id; 358 bus_softc->sim = xpt_path_sim(path); 359 if (cpi->maxio != 0) 360 bus_softc->maxio = cpi->maxio; 361 else 362 bus_softc->maxio = DFLTPHYS; 363 mtx_init(&bus_softc->lun_softc_mtx, "LUN softc mtx", NULL, 364 MTX_DEF); 365 STAILQ_INIT(&bus_softc->lun_softc_list); 366 367 port = &bus_softc->port; 368 port->frontend = &ctlfe_frontend; 369 370 /* 371 * XXX KDM should we be more accurate here ? 372 */ 373 if (cpi->transport == XPORT_FC) 374 port->port_type = CTL_PORT_FC; 375 else if (cpi->transport == XPORT_SAS) 376 port->port_type = CTL_PORT_SAS; 377 else 378 port->port_type = CTL_PORT_SCSI; 379 380 /* XXX KDM what should the real number be here? */ 381 port->num_requested_ctl_io = 4096; 382 snprintf(bus_softc->port_name, sizeof(bus_softc->port_name), 383 "%s%d", cpi->dev_name, cpi->unit_number); 384 /* 385 * XXX KDM it would be nice to allocate storage in the 386 * frontend structure itself. 387 */ 388 port->port_name = bus_softc->port_name; 389 port->physical_port = cpi->unit_number; 390 port->virtual_port = cpi->bus_id; 391 port->port_online = ctlfe_online; 392 port->port_offline = ctlfe_offline; 393 port->onoff_arg = bus_softc; 394 port->lun_enable = ctlfe_lun_enable; 395 port->lun_disable = ctlfe_lun_disable; 396 port->targ_lun_arg = bus_softc; 397 port->fe_datamove = ctlfe_datamove_done; 398 port->fe_done = ctlfe_datamove_done; 399 /* 400 * XXX KDM the path inquiry doesn't give us the maximum 401 * number of targets supported. 402 */ 403 port->max_targets = cpi->max_target; 404 port->max_target_id = cpi->max_target; 405 406 /* 407 * XXX KDM need to figure out whether we're the master or 408 * slave. 409 */ 410 #ifdef CTLFEDEBUG 411 printf("%s: calling ctl_port_register() for %s%d\n", 412 __func__, cpi->dev_name, cpi->unit_number); 413 #endif 414 retval = ctl_port_register(port, /*master_SC*/ 1); 415 if (retval != 0) { 416 printf("%s: ctl_port_register() failed with " 417 "error %d!\n", __func__, retval); 418 mtx_destroy(&bus_softc->lun_softc_mtx); 419 free(bus_softc, M_CTLFE); 420 break; 421 } else { 422 mtx_lock(&ctlfe_list_mtx); 423 STAILQ_INSERT_TAIL(&ctlfe_softc_list, bus_softc, links); 424 mtx_unlock(&ctlfe_list_mtx); 425 } 426 427 break; 428 } 429 case AC_PATH_DEREGISTERED: { 430 struct ctlfe_softc *softc = NULL; 431 432 mtx_lock(&ctlfe_list_mtx); 433 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) { 434 if (softc->path_id == xpt_path_path_id(path)) { 435 STAILQ_REMOVE(&ctlfe_softc_list, softc, 436 ctlfe_softc, links); 437 break; 438 } 439 } 440 mtx_unlock(&ctlfe_list_mtx); 441 442 if (softc != NULL) { 443 /* 444 * XXX KDM are we certain at this point that there 445 * are no outstanding commands for this frontend? 446 */ 447 ctl_port_deregister(&softc->port); 448 mtx_destroy(&softc->lun_softc_mtx); 449 free(softc, M_CTLFE); 450 } 451 break; 452 } 453 case AC_CONTRACT: { 454 struct ac_contract *ac; 455 456 ac = (struct ac_contract *)arg; 457 458 switch (ac->contract_number) { 459 case AC_CONTRACT_DEV_CHG: { 460 struct ac_device_changed *dev_chg; 461 struct ctlfe_softc *softc; 462 int retval, found; 463 464 dev_chg = (struct ac_device_changed *)ac->contract_data; 465 466 printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n", 467 __func__, dev_chg->wwpn, dev_chg->port, 468 xpt_path_path_id(path), dev_chg->target, 469 (dev_chg->arrived == 0) ? "left" : "arrived"); 470 471 found = 0; 472 473 mtx_lock(&ctlfe_list_mtx); 474 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) { 475 if (softc->path_id == xpt_path_path_id(path)) { 476 found = 1; 477 break; 478 } 479 } 480 mtx_unlock(&ctlfe_list_mtx); 481 482 if (found == 0) { 483 printf("%s: CTL port for CAM path %u not " 484 "found!\n", __func__, 485 xpt_path_path_id(path)); 486 break; 487 } 488 if (dev_chg->arrived != 0) { 489 retval = ctl_add_initiator(&softc->port, 490 dev_chg->target, dev_chg->wwpn, NULL); 491 } else { 492 retval = ctl_remove_initiator(&softc->port, 493 dev_chg->target); 494 } 495 496 if (retval < 0) { 497 printf("%s: could not %s port %d iid %u " 498 "WWPN %#jx!\n", __func__, 499 (dev_chg->arrived != 0) ? "add" : 500 "remove", softc->port.targ_port, 501 dev_chg->target, 502 (uintmax_t)dev_chg->wwpn); 503 } 504 break; 505 } 506 default: 507 printf("%s: unsupported contract number %ju\n", 508 __func__, (uintmax_t)ac->contract_number); 509 break; 510 } 511 break; 512 } 513 default: 514 break; 515 } 516 } 517 518 static cam_status 519 ctlferegister(struct cam_periph *periph, void *arg) 520 { 521 struct ctlfe_softc *bus_softc; 522 struct ctlfe_lun_softc *softc; 523 union ccb en_lun_ccb; 524 cam_status status; 525 int i; 526 527 softc = (struct ctlfe_lun_softc *)arg; 528 bus_softc = softc->parent_softc; 529 530 TAILQ_INIT(&softc->work_queue); 531 softc->periph = periph; 532 533 callout_init_mtx(&softc->dma_callout, xpt_path_mtx(periph->path), 534 /*flags*/ 0); 535 periph->softc = softc; 536 537 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE); 538 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN; 539 en_lun_ccb.cel.grp6_len = 0; 540 en_lun_ccb.cel.grp7_len = 0; 541 en_lun_ccb.cel.enable = 1; 542 xpt_action(&en_lun_ccb); 543 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK); 544 if (status != CAM_REQ_CMP) { 545 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n", 546 __func__, en_lun_ccb.ccb_h.status); 547 return (status); 548 } 549 550 status = CAM_REQ_CMP; 551 552 for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) { 553 union ccb *new_ccb; 554 555 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE, 556 M_ZERO|M_NOWAIT); 557 if (new_ccb == NULL) { 558 status = CAM_RESRC_UNAVAIL; 559 break; 560 } 561 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1); 562 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO; 563 new_ccb->ccb_h.cbfcnp = ctlfedone; 564 new_ccb->ccb_h.flags |= CAM_UNLOCKED; 565 xpt_action(new_ccb); 566 softc->atios_sent++; 567 status = new_ccb->ccb_h.status; 568 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 569 free(new_ccb, M_CTLFE); 570 break; 571 } 572 } 573 574 status = cam_periph_acquire(periph); 575 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 576 xpt_print(periph->path, "%s: could not acquire reference " 577 "count, status = %#x\n", __func__, status); 578 return (status); 579 } 580 581 if (i == 0) { 582 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, " 583 "status 0x%x\n", __func__, status); 584 return (CAM_REQ_CMP_ERR); 585 } 586 587 for (i = 0; i < CTLFE_IN_PER_LUN; i++) { 588 union ccb *new_ccb; 589 590 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE, 591 M_ZERO|M_NOWAIT); 592 if (new_ccb == NULL) { 593 status = CAM_RESRC_UNAVAIL; 594 break; 595 } 596 597 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1); 598 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY; 599 new_ccb->ccb_h.cbfcnp = ctlfedone; 600 new_ccb->ccb_h.flags |= CAM_UNLOCKED; 601 xpt_action(new_ccb); 602 softc->inots_sent++; 603 status = new_ccb->ccb_h.status; 604 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 605 /* 606 * Note that we don't free the CCB here. If the 607 * status is not CAM_REQ_INPROG, then we're 608 * probably talking to a SIM that says it is 609 * target-capable but doesn't support the 610 * XPT_IMMEDIATE_NOTIFY CCB. i.e. it supports the 611 * older API. In that case, it'll call xpt_done() 612 * on the CCB, and we need to free it in our done 613 * routine as a result. 614 */ 615 break; 616 } 617 } 618 if ((i == 0) 619 || (status != CAM_REQ_INPROG)) { 620 xpt_print(periph->path, "%s: could not allocate immediate " 621 "notify CCBs, status 0x%x\n", __func__, status); 622 return (CAM_REQ_CMP_ERR); 623 } 624 return (CAM_REQ_CMP); 625 } 626 627 static void 628 ctlfeoninvalidate(struct cam_periph *periph) 629 { 630 union ccb en_lun_ccb; 631 cam_status status; 632 struct ctlfe_softc *bus_softc; 633 struct ctlfe_lun_softc *softc; 634 635 softc = (struct ctlfe_lun_softc *)periph->softc; 636 637 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE); 638 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN; 639 en_lun_ccb.cel.grp6_len = 0; 640 en_lun_ccb.cel.grp7_len = 0; 641 en_lun_ccb.cel.enable = 0; 642 xpt_action(&en_lun_ccb); 643 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK); 644 if (status != CAM_REQ_CMP) { 645 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n", 646 __func__, en_lun_ccb.ccb_h.status); 647 /* 648 * XXX KDM what do we do now? 649 */ 650 } 651 xpt_print(periph->path, "LUN removed, %ju ATIOs outstanding, %ju " 652 "INOTs outstanding, %d refs\n", softc->atios_sent - 653 softc->atios_returned, softc->inots_sent - 654 softc->inots_returned, periph->refcount); 655 656 bus_softc = softc->parent_softc; 657 mtx_lock(&bus_softc->lun_softc_mtx); 658 STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links); 659 mtx_unlock(&bus_softc->lun_softc_mtx); 660 } 661 662 static void 663 ctlfecleanup(struct cam_periph *periph) 664 { 665 struct ctlfe_lun_softc *softc; 666 667 xpt_print(periph->path, "%s: Called\n", __func__); 668 669 softc = (struct ctlfe_lun_softc *)periph->softc; 670 671 /* 672 * XXX KDM is there anything else that needs to be done here? 673 */ 674 675 callout_stop(&softc->dma_callout); 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 ccb_hdr *ccb_h; 769 770 softc = (struct ctlfe_lun_softc *)periph->softc; 771 772 softc->ccbs_alloced++; 773 774 start_ccb->ccb_h.ccb_type = CTLFE_CCB_DEFAULT; 775 776 ccb_h = TAILQ_FIRST(&softc->work_queue); 777 if (ccb_h == NULL) { 778 softc->ccbs_freed++; 779 xpt_release_ccb(start_ccb); 780 } else { 781 struct ccb_accept_tio *atio; 782 struct ccb_scsiio *csio; 783 uint8_t *data_ptr; 784 uint32_t dxfer_len; 785 ccb_flags flags; 786 union ctl_io *io; 787 uint8_t scsi_status; 788 789 /* Take the ATIO off the work queue */ 790 TAILQ_REMOVE(&softc->work_queue, ccb_h, periph_links.tqe); 791 atio = (struct ccb_accept_tio *)ccb_h; 792 io = (union ctl_io *)ccb_h->io_ptr; 793 csio = &start_ccb->csio; 794 795 flags = atio->ccb_h.flags & 796 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK); 797 798 if ((io == NULL) 799 || (io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 800 /* 801 * We're done, send status back. 802 */ 803 flags |= CAM_SEND_STATUS; 804 if (io == NULL) { 805 scsi_status = SCSI_STATUS_BUSY; 806 csio->sense_len = 0; 807 } else if ((io->io_hdr.flags & CTL_FLAG_ABORT) && 808 (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) { 809 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED; 810 811 /* 812 * If this command was aborted, we don't 813 * need to send status back to the SIM. 814 * Just free the CTIO and ctl_io, and 815 * recycle the ATIO back to the SIM. 816 */ 817 xpt_print(periph->path, "%s: aborted " 818 "command 0x%04x discarded\n", 819 __func__, io->scsiio.tag_num); 820 ctl_free_io(io); 821 /* 822 * For a wildcard attachment, commands can 823 * come in with a specific target/lun. Reset 824 * the target and LUN fields back to the 825 * wildcard values before we send them back 826 * down to the SIM. The SIM has a wildcard 827 * LUN enabled, not whatever target/lun 828 * these happened to be. 829 */ 830 if (softc->flags & CTLFE_LUN_WILDCARD) { 831 atio->ccb_h.target_id = 832 CAM_TARGET_WILDCARD; 833 atio->ccb_h.target_lun = 834 CAM_LUN_WILDCARD; 835 } 836 837 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) { 838 cam_release_devq(periph->path, 839 /*relsim_flags*/0, 840 /*reduction*/0, 841 /*timeout*/0, 842 /*getcount_only*/0); 843 atio->ccb_h.status &= ~CAM_DEV_QFRZN; 844 } 845 846 ccb_h = TAILQ_FIRST(&softc->work_queue); 847 848 if (atio->ccb_h.func_code != 849 XPT_ACCEPT_TARGET_IO) { 850 xpt_print(periph->path, "%s: func_code " 851 "is %#x\n", __func__, 852 atio->ccb_h.func_code); 853 } 854 start_ccb->ccb_h.func_code = XPT_ABORT; 855 start_ccb->cab.abort_ccb = (union ccb *)atio; 856 857 /* Tell the SIM that we've aborted this ATIO */ 858 xpt_action(start_ccb); 859 softc->ccbs_freed++; 860 xpt_release_ccb(start_ccb); 861 862 /* 863 * Send the ATIO back down to the SIM. 864 */ 865 xpt_action((union ccb *)atio); 866 softc->atios_sent++; 867 868 /* 869 * If we still have work to do, ask for 870 * another CCB. Otherwise, deactivate our 871 * callout. 872 */ 873 if (ccb_h != NULL) 874 xpt_schedule(periph, /*priority*/ 1); 875 else 876 callout_stop(&softc->dma_callout); 877 878 return; 879 } else { 880 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED; 881 scsi_status = io->scsiio.scsi_status; 882 csio->sense_len = io->scsiio.sense_len; 883 } 884 data_ptr = NULL; 885 dxfer_len = 0; 886 if (io == NULL) { 887 printf("%s: tag %04x io is NULL\n", __func__, 888 atio->tag_id); 889 } else { 890 #ifdef CTLFEDEBUG 891 printf("%s: tag %04x status %x\n", __func__, 892 atio->tag_id, io->io_hdr.status); 893 #endif 894 } 895 csio->sglist_cnt = 0; 896 if (csio->sense_len != 0) { 897 csio->sense_data = io->scsiio.sense_data; 898 flags |= CAM_SEND_SENSE; 899 } else if (scsi_status == SCSI_STATUS_CHECK_COND) { 900 xpt_print(periph->path, "%s: check condition " 901 "with no sense\n", __func__); 902 } 903 } else { 904 struct ctlfe_lun_cmd_info *cmd_info; 905 906 /* 907 * Datamove call, we need to setup the S/G list. 908 */ 909 910 cmd_info = (struct ctlfe_lun_cmd_info *) 911 io->io_hdr.port_priv; 912 913 KASSERT(sizeof(*cmd_info) < CTL_PORT_PRIV_SIZE, 914 ("%s: sizeof(struct ctlfe_lun_cmd_info) %zd < " 915 "CTL_PORT_PRIV_SIZE %d", __func__, 916 sizeof(*cmd_info), CTL_PORT_PRIV_SIZE)); 917 io->io_hdr.flags &= ~CTL_FLAG_DMA_QUEUED; 918 919 /* 920 * Need to zero this, in case it has been used for 921 * a previous datamove for this particular I/O. 922 */ 923 bzero(cmd_info, sizeof(*cmd_info)); 924 scsi_status = 0; 925 926 csio->cdb_len = atio->cdb_len; 927 928 ctlfedata(softc, io, &flags, &data_ptr, &dxfer_len, 929 &csio->sglist_cnt); 930 931 io->scsiio.ext_data_filled += dxfer_len; 932 933 if (io->scsiio.ext_data_filled > 934 io->scsiio.kern_total_len) { 935 xpt_print(periph->path, "%s: tag 0x%04x " 936 "fill len %u > total %u\n", 937 __func__, io->scsiio.tag_num, 938 io->scsiio.ext_data_filled, 939 io->scsiio.kern_total_len); 940 } 941 } 942 943 #ifdef CTLFEDEBUG 944 printf("%s: %s: tag %04x flags %x ptr %p len %u\n", __func__, 945 (flags & CAM_SEND_STATUS) ? "done" : "datamove", 946 atio->tag_id, flags, data_ptr, dxfer_len); 947 #endif 948 949 /* 950 * Valid combinations: 951 * - CAM_SEND_STATUS, CAM_DATA_SG = 0, dxfer_len = 0, 952 * sglist_cnt = 0 953 * - CAM_SEND_STATUS = 0, CAM_DATA_SG = 0, dxfer_len != 0, 954 * sglist_cnt = 0 955 * - CAM_SEND_STATUS = 0, CAM_DATA_SG, dxfer_len != 0, 956 * sglist_cnt != 0 957 */ 958 #ifdef CTLFEDEBUG 959 if (((flags & CAM_SEND_STATUS) 960 && (((flags & CAM_DATA_SG) != 0) 961 || (dxfer_len != 0) 962 || (csio->sglist_cnt != 0))) 963 || (((flags & CAM_SEND_STATUS) == 0) 964 && (dxfer_len == 0)) 965 || ((flags & CAM_DATA_SG) 966 && (csio->sglist_cnt == 0)) 967 || (((flags & CAM_DATA_SG) == 0) 968 && (csio->sglist_cnt != 0))) { 969 printf("%s: tag %04x cdb %02x flags %#x dxfer_len " 970 "%d sg %u\n", __func__, atio->tag_id, 971 atio->cdb_io.cdb_bytes[0], flags, dxfer_len, 972 csio->sglist_cnt); 973 if (io != NULL) { 974 printf("%s: tag %04x io status %#x\n", __func__, 975 atio->tag_id, io->io_hdr.status); 976 } else { 977 printf("%s: tag %04x no associated io\n", 978 __func__, atio->tag_id); 979 } 980 } 981 #endif 982 cam_fill_ctio(csio, 983 /*retries*/ 2, 984 ctlfedone, 985 flags, 986 (flags & CAM_TAG_ACTION_VALID) ? 987 MSG_SIMPLE_Q_TAG : 0, 988 atio->tag_id, 989 atio->init_id, 990 scsi_status, 991 /*data_ptr*/ data_ptr, 992 /*dxfer_len*/ dxfer_len, 993 /*timeout*/ 5 * 1000); 994 start_ccb->ccb_h.flags |= CAM_UNLOCKED; 995 start_ccb->ccb_h.ccb_atio = atio; 996 if (((flags & CAM_SEND_STATUS) == 0) 997 && (io != NULL)) 998 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG; 999 1000 softc->ctios_sent++; 1001 1002 cam_periph_unlock(periph); 1003 xpt_action(start_ccb); 1004 cam_periph_lock(periph); 1005 1006 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1007 cam_release_devq(periph->path, 1008 /*relsim_flags*/0, 1009 /*reduction*/0, 1010 /*timeout*/0, 1011 /*getcount_only*/0); 1012 atio->ccb_h.status &= ~CAM_DEV_QFRZN; 1013 } 1014 1015 ccb_h = TAILQ_FIRST(&softc->work_queue); 1016 } 1017 /* 1018 * If we still have work to do, ask for another CCB. Otherwise, 1019 * deactivate our callout. 1020 */ 1021 if (ccb_h != NULL) 1022 xpt_schedule(periph, /*priority*/ 1); 1023 else 1024 callout_stop(&softc->dma_callout); 1025 } 1026 1027 static void 1028 ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb) 1029 { 1030 struct ctlfe_lun_softc *softc; 1031 1032 softc = (struct ctlfe_lun_softc *)periph->softc; 1033 1034 switch (ccb->ccb_h.func_code) { 1035 case XPT_ACCEPT_TARGET_IO: 1036 softc->atios_returned++; 1037 break; 1038 case XPT_IMMEDIATE_NOTIFY: 1039 case XPT_NOTIFY_ACKNOWLEDGE: 1040 softc->inots_returned++; 1041 break; 1042 default: 1043 break; 1044 } 1045 1046 free(ccb, M_CTLFE); 1047 1048 KASSERT(softc->atios_returned <= softc->atios_sent, ("%s: " 1049 "atios_returned %ju > atios_sent %ju", __func__, 1050 softc->atios_returned, softc->atios_sent)); 1051 KASSERT(softc->inots_returned <= softc->inots_sent, ("%s: " 1052 "inots_returned %ju > inots_sent %ju", __func__, 1053 softc->inots_returned, softc->inots_sent)); 1054 1055 /* 1056 * If we have received all of our CCBs, we can release our 1057 * reference on the peripheral driver. It will probably go away 1058 * now. 1059 */ 1060 if ((softc->atios_returned == softc->atios_sent) 1061 && (softc->inots_returned == softc->inots_sent)) { 1062 cam_periph_release_locked(periph); 1063 } 1064 } 1065 1066 static int 1067 ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset) 1068 { 1069 uint64_t lba; 1070 uint32_t num_blocks, nbc; 1071 uint8_t *cmdbyt = (atio->ccb_h.flags & CAM_CDB_POINTER)? 1072 atio->cdb_io.cdb_ptr : atio->cdb_io.cdb_bytes; 1073 1074 nbc = offset >> 9; /* ASSUMING 512 BYTE BLOCKS */ 1075 1076 switch (cmdbyt[0]) { 1077 case READ_6: 1078 case WRITE_6: 1079 { 1080 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt; 1081 lba = scsi_3btoul(cdb->addr); 1082 lba &= 0x1fffff; 1083 num_blocks = cdb->length; 1084 if (num_blocks == 0) 1085 num_blocks = 256; 1086 lba += nbc; 1087 num_blocks -= nbc; 1088 scsi_ulto3b(lba, cdb->addr); 1089 cdb->length = num_blocks; 1090 break; 1091 } 1092 case READ_10: 1093 case WRITE_10: 1094 { 1095 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt; 1096 lba = scsi_4btoul(cdb->addr); 1097 num_blocks = scsi_2btoul(cdb->length); 1098 lba += nbc; 1099 num_blocks -= nbc; 1100 scsi_ulto4b(lba, cdb->addr); 1101 scsi_ulto2b(num_blocks, cdb->length); 1102 break; 1103 } 1104 case READ_12: 1105 case WRITE_12: 1106 { 1107 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt; 1108 lba = scsi_4btoul(cdb->addr); 1109 num_blocks = scsi_4btoul(cdb->length); 1110 lba += nbc; 1111 num_blocks -= nbc; 1112 scsi_ulto4b(lba, cdb->addr); 1113 scsi_ulto4b(num_blocks, cdb->length); 1114 break; 1115 } 1116 case READ_16: 1117 case WRITE_16: 1118 { 1119 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt; 1120 lba = scsi_8btou64(cdb->addr); 1121 num_blocks = scsi_4btoul(cdb->length); 1122 lba += nbc; 1123 num_blocks -= nbc; 1124 scsi_u64to8b(lba, cdb->addr); 1125 scsi_ulto4b(num_blocks, cdb->length); 1126 break; 1127 } 1128 default: 1129 return -1; 1130 } 1131 return (0); 1132 } 1133 1134 static void 1135 ctlfedone(struct cam_periph *periph, union ccb *done_ccb) 1136 { 1137 struct ctlfe_lun_softc *softc; 1138 struct ctlfe_softc *bus_softc; 1139 struct ccb_accept_tio *atio = NULL; 1140 union ctl_io *io = NULL; 1141 struct mtx *mtx; 1142 1143 KASSERT((done_ccb->ccb_h.flags & CAM_UNLOCKED) != 0, 1144 ("CCB in ctlfedone() without CAM_UNLOCKED flag")); 1145 #ifdef CTLFE_DEBUG 1146 printf("%s: entered, func_code = %#x, type = %#lx\n", __func__, 1147 done_ccb->ccb_h.func_code, done_ccb->ccb_h.ccb_type); 1148 #endif 1149 1150 softc = (struct ctlfe_lun_softc *)periph->softc; 1151 bus_softc = softc->parent_softc; 1152 mtx = cam_periph_mtx(periph); 1153 mtx_lock(mtx); 1154 1155 /* 1156 * If the peripheral is invalid, ATIOs and immediate notify CCBs 1157 * need to be freed. Most of the ATIOs and INOTs that come back 1158 * will be CCBs that are being returned from the SIM as a result of 1159 * our disabling the LUN. 1160 * 1161 * Other CCB types are handled in their respective cases below. 1162 */ 1163 if (periph->flags & CAM_PERIPH_INVALID) { 1164 switch (done_ccb->ccb_h.func_code) { 1165 case XPT_ACCEPT_TARGET_IO: 1166 case XPT_IMMEDIATE_NOTIFY: 1167 case XPT_NOTIFY_ACKNOWLEDGE: 1168 ctlfe_free_ccb(periph, done_ccb); 1169 goto out; 1170 default: 1171 break; 1172 } 1173 1174 } 1175 switch (done_ccb->ccb_h.func_code) { 1176 case XPT_ACCEPT_TARGET_IO: { 1177 1178 atio = &done_ccb->atio; 1179 1180 softc->atios_returned++; 1181 1182 resubmit: 1183 /* 1184 * Allocate a ctl_io, pass it to CTL, and wait for the 1185 * datamove or done. 1186 */ 1187 io = ctl_alloc_io(bus_softc->port.ctl_pool_ref); 1188 if (io == NULL) { 1189 atio->ccb_h.flags &= ~CAM_DIR_MASK; 1190 atio->ccb_h.flags |= CAM_DIR_NONE; 1191 1192 printf("%s: ctl_alloc_io failed!\n", __func__); 1193 1194 /* 1195 * XXX KDM need to set SCSI_STATUS_BUSY, but there 1196 * is no field in the ATIO structure to do that, 1197 * and we aren't able to allocate a ctl_io here. 1198 * What to do? 1199 */ 1200 atio->sense_len = 0; 1201 done_ccb->ccb_h.io_ptr = NULL; 1202 TAILQ_INSERT_TAIL(&softc->work_queue, &atio->ccb_h, 1203 periph_links.tqe); 1204 xpt_schedule(periph, /*priority*/ 1); 1205 break; 1206 } 1207 mtx_unlock(mtx); 1208 ctl_zero_io(io); 1209 1210 /* Save pointers on both sides */ 1211 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = done_ccb; 1212 done_ccb->ccb_h.io_ptr = io; 1213 1214 /* 1215 * Only SCSI I/O comes down this path, resets, etc. come 1216 * down the immediate notify path below. 1217 */ 1218 io->io_hdr.io_type = CTL_IO_SCSI; 1219 io->io_hdr.nexus.initid.id = atio->init_id; 1220 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port; 1221 io->io_hdr.nexus.targ_target.id = atio->ccb_h.target_id; 1222 io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun; 1223 io->scsiio.tag_num = atio->tag_id; 1224 switch (atio->tag_action) { 1225 case CAM_TAG_ACTION_NONE: 1226 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 1227 break; 1228 case MSG_SIMPLE_TASK: 1229 io->scsiio.tag_type = CTL_TAG_SIMPLE; 1230 break; 1231 case MSG_HEAD_OF_QUEUE_TASK: 1232 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 1233 break; 1234 case MSG_ORDERED_TASK: 1235 io->scsiio.tag_type = CTL_TAG_ORDERED; 1236 break; 1237 case MSG_ACA_TASK: 1238 io->scsiio.tag_type = CTL_TAG_ACA; 1239 break; 1240 default: 1241 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 1242 printf("%s: unhandled tag type %#x!!\n", __func__, 1243 atio->tag_action); 1244 break; 1245 } 1246 if (atio->cdb_len > sizeof(io->scsiio.cdb)) { 1247 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 1248 __func__, atio->cdb_len, sizeof(io->scsiio.cdb)); 1249 } 1250 io->scsiio.cdb_len = min(atio->cdb_len, sizeof(io->scsiio.cdb)); 1251 bcopy(atio->cdb_io.cdb_bytes, io->scsiio.cdb, 1252 io->scsiio.cdb_len); 1253 1254 #ifdef CTLFEDEBUG 1255 printf("%s: %ju:%d:%ju:%d: tag %04x CDB %02x\n", __func__, 1256 (uintmax_t)io->io_hdr.nexus.initid.id, 1257 io->io_hdr.nexus.targ_port, 1258 (uintmax_t)io->io_hdr.nexus.targ_target.id, 1259 io->io_hdr.nexus.targ_lun, 1260 io->scsiio.tag_num, io->scsiio.cdb[0]); 1261 #endif 1262 1263 ctl_queue(io); 1264 return; 1265 } 1266 case XPT_CONT_TARGET_IO: { 1267 int srr = 0; 1268 uint32_t srr_off = 0; 1269 1270 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio; 1271 io = (union ctl_io *)atio->ccb_h.io_ptr; 1272 1273 softc->ctios_returned++; 1274 #ifdef CTLFEDEBUG 1275 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n", 1276 __func__, atio->tag_id, done_ccb->ccb_h.flags); 1277 #endif 1278 /* 1279 * Handle SRR case were the data pointer is pushed back hack 1280 */ 1281 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV 1282 && done_ccb->csio.msg_ptr != NULL 1283 && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED 1284 && done_ccb->csio.msg_ptr[1] == 5 1285 && done_ccb->csio.msg_ptr[2] == 0) { 1286 srr = 1; 1287 srr_off = 1288 (done_ccb->csio.msg_ptr[3] << 24) 1289 | (done_ccb->csio.msg_ptr[4] << 16) 1290 | (done_ccb->csio.msg_ptr[5] << 8) 1291 | (done_ccb->csio.msg_ptr[6]); 1292 } 1293 1294 if (srr && (done_ccb->ccb_h.flags & CAM_SEND_STATUS)) { 1295 /* 1296 * If status was being sent, the back end data is now 1297 * history. Hack it up and resubmit a new command with 1298 * the CDB adjusted. If the SIM does the right thing, 1299 * all of the resid math should work. 1300 */ 1301 softc->ccbs_freed++; 1302 xpt_release_ccb(done_ccb); 1303 ctl_free_io(io); 1304 if (ctlfe_adjust_cdb(atio, srr_off) == 0) { 1305 done_ccb = (union ccb *)atio; 1306 goto resubmit; 1307 } 1308 /* 1309 * Fall through to doom.... 1310 */ 1311 } else if (srr) { 1312 /* 1313 * If we have an srr and we're still sending data, we 1314 * should be able to adjust offsets and cycle again. 1315 */ 1316 io->scsiio.kern_rel_offset = 1317 io->scsiio.ext_data_filled = srr_off; 1318 io->scsiio.ext_data_len = io->scsiio.kern_total_len - 1319 io->scsiio.kern_rel_offset; 1320 softc->ccbs_freed++; 1321 io->scsiio.io_hdr.status = CTL_STATUS_NONE; 1322 xpt_release_ccb(done_ccb); 1323 TAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h, 1324 periph_links.tqe); 1325 xpt_schedule(periph, /*priority*/ 1); 1326 break; 1327 } 1328 1329 /* 1330 * If we were sending status back to the initiator, free up 1331 * resources. If we were doing a datamove, call the 1332 * datamove done routine. 1333 */ 1334 if (done_ccb->ccb_h.flags & CAM_SEND_STATUS) { 1335 softc->ccbs_freed++; 1336 xpt_release_ccb(done_ccb); 1337 ctl_free_io(io); 1338 /* 1339 * For a wildcard attachment, commands can come in 1340 * with a specific target/lun. Reset the target 1341 * and LUN fields back to the wildcard values before 1342 * we send them back down to the SIM. The SIM has 1343 * a wildcard LUN enabled, not whatever target/lun 1344 * these happened to be. 1345 */ 1346 if (softc->flags & CTLFE_LUN_WILDCARD) { 1347 atio->ccb_h.target_id = CAM_TARGET_WILDCARD; 1348 atio->ccb_h.target_lun = CAM_LUN_WILDCARD; 1349 } 1350 if (periph->flags & CAM_PERIPH_INVALID) { 1351 ctlfe_free_ccb(periph, (union ccb *)atio); 1352 } else { 1353 softc->atios_sent++; 1354 mtx_unlock(mtx); 1355 xpt_action((union ccb *)atio); 1356 return; 1357 } 1358 } else { 1359 struct ctlfe_lun_cmd_info *cmd_info; 1360 struct ccb_scsiio *csio; 1361 1362 csio = &done_ccb->csio; 1363 cmd_info = (struct ctlfe_lun_cmd_info *) 1364 io->io_hdr.port_priv; 1365 1366 io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG; 1367 1368 io->scsiio.ext_data_len += csio->dxfer_len; 1369 if (io->scsiio.ext_data_len > 1370 io->scsiio.kern_total_len) { 1371 xpt_print(periph->path, "%s: tag 0x%04x " 1372 "done len %u > total %u sent %u\n", 1373 __func__, io->scsiio.tag_num, 1374 io->scsiio.ext_data_len, 1375 io->scsiio.kern_total_len, 1376 io->scsiio.ext_data_filled); 1377 } 1378 /* 1379 * Translate CAM status to CTL status. Success 1380 * does not change the overall, ctl_io status. In 1381 * that case we just set port_status to 0. If we 1382 * have a failure, though, set a data phase error 1383 * for the overall ctl_io. 1384 */ 1385 switch (done_ccb->ccb_h.status & CAM_STATUS_MASK) { 1386 case CAM_REQ_CMP: 1387 io->io_hdr.port_status = 0; 1388 break; 1389 default: 1390 /* 1391 * XXX KDM we probably need to figure out a 1392 * standard set of errors that the SIM 1393 * drivers should return in the event of a 1394 * data transfer failure. A data phase 1395 * error will at least point the user to a 1396 * data transfer error of some sort. 1397 * Hopefully the SIM printed out some 1398 * additional information to give the user 1399 * a clue what happened. 1400 */ 1401 io->io_hdr.port_status = 0xbad1; 1402 ctl_set_data_phase_error(&io->scsiio); 1403 /* 1404 * XXX KDM figure out residual. 1405 */ 1406 break; 1407 } 1408 /* 1409 * If we had to break this S/G list into multiple 1410 * pieces, figure out where we are in the list, and 1411 * continue sending pieces if necessary. 1412 */ 1413 if ((cmd_info->flags & CTLFE_CMD_PIECEWISE) 1414 && (io->io_hdr.port_status == 0)) { 1415 ccb_flags flags; 1416 uint8_t scsi_status; 1417 uint8_t *data_ptr; 1418 uint32_t dxfer_len; 1419 1420 flags = atio->ccb_h.flags & 1421 (CAM_DIS_DISCONNECT| 1422 CAM_TAG_ACTION_VALID); 1423 1424 ctlfedata(softc, io, &flags, &data_ptr, 1425 &dxfer_len, &csio->sglist_cnt); 1426 1427 scsi_status = 0; 1428 1429 if (((flags & CAM_SEND_STATUS) == 0) 1430 && (dxfer_len == 0)) { 1431 printf("%s: tag %04x no status or " 1432 "len cdb = %02x\n", __func__, 1433 atio->tag_id, 1434 atio->cdb_io.cdb_bytes[0]); 1435 printf("%s: tag %04x io status %#x\n", 1436 __func__, atio->tag_id, 1437 io->io_hdr.status); 1438 } 1439 1440 cam_fill_ctio(csio, 1441 /*retries*/ 2, 1442 ctlfedone, 1443 flags, 1444 (flags & CAM_TAG_ACTION_VALID) ? 1445 MSG_SIMPLE_Q_TAG : 0, 1446 atio->tag_id, 1447 atio->init_id, 1448 scsi_status, 1449 /*data_ptr*/ data_ptr, 1450 /*dxfer_len*/ dxfer_len, 1451 /*timeout*/ 5 * 1000); 1452 1453 csio->ccb_h.flags |= CAM_UNLOCKED; 1454 csio->resid = 0; 1455 csio->ccb_h.ccb_atio = atio; 1456 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG; 1457 softc->ctios_sent++; 1458 mtx_unlock(mtx); 1459 xpt_action((union ccb *)csio); 1460 } else { 1461 /* 1462 * Release the CTIO. The ATIO will be sent back 1463 * down to the SIM once we send status. 1464 */ 1465 softc->ccbs_freed++; 1466 xpt_release_ccb(done_ccb); 1467 mtx_unlock(mtx); 1468 1469 /* Call the backend move done callback */ 1470 io->scsiio.be_move_done(io); 1471 } 1472 return; 1473 } 1474 break; 1475 } 1476 case XPT_IMMEDIATE_NOTIFY: { 1477 union ctl_io *io; 1478 struct ccb_immediate_notify *inot; 1479 cam_status status; 1480 int frozen; 1481 1482 inot = &done_ccb->cin1; 1483 1484 softc->inots_returned++; 1485 1486 frozen = (done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0; 1487 1488 printf("%s: got XPT_IMMEDIATE_NOTIFY status %#x tag %#x " 1489 "seq %#x\n", __func__, inot->ccb_h.status, 1490 inot->tag_id, inot->seq_id); 1491 1492 io = ctl_alloc_io(bus_softc->port.ctl_pool_ref); 1493 if (io != NULL) { 1494 int send_ctl_io; 1495 1496 send_ctl_io = 1; 1497 1498 ctl_zero_io(io); 1499 io->io_hdr.io_type = CTL_IO_TASK; 1500 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr =done_ccb; 1501 inot->ccb_h.io_ptr = io; 1502 io->io_hdr.nexus.initid.id = inot->initiator_id; 1503 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port; 1504 io->io_hdr.nexus.targ_target.id = inot->ccb_h.target_id; 1505 io->io_hdr.nexus.targ_lun = inot->ccb_h.target_lun; 1506 /* XXX KDM should this be the tag_id? */ 1507 io->taskio.tag_num = inot->seq_id; 1508 1509 status = inot->ccb_h.status & CAM_STATUS_MASK; 1510 switch (status) { 1511 case CAM_SCSI_BUS_RESET: 1512 io->taskio.task_action = CTL_TASK_BUS_RESET; 1513 break; 1514 case CAM_BDR_SENT: 1515 io->taskio.task_action = CTL_TASK_TARGET_RESET; 1516 break; 1517 case CAM_MESSAGE_RECV: 1518 switch (inot->arg) { 1519 case MSG_ABORT_TASK_SET: 1520 /* 1521 * XXX KDM this isn't currently 1522 * supported by CTL. It ends up 1523 * being a no-op. 1524 */ 1525 io->taskio.task_action = 1526 CTL_TASK_ABORT_TASK_SET; 1527 break; 1528 case MSG_TARGET_RESET: 1529 io->taskio.task_action = 1530 CTL_TASK_TARGET_RESET; 1531 break; 1532 case MSG_ABORT_TASK: 1533 io->taskio.task_action = 1534 CTL_TASK_ABORT_TASK; 1535 break; 1536 case MSG_LOGICAL_UNIT_RESET: 1537 io->taskio.task_action = 1538 CTL_TASK_LUN_RESET; 1539 break; 1540 case MSG_CLEAR_TASK_SET: 1541 /* 1542 * XXX KDM this isn't currently 1543 * supported by CTL. It ends up 1544 * being a no-op. 1545 */ 1546 io->taskio.task_action = 1547 CTL_TASK_CLEAR_TASK_SET; 1548 break; 1549 case MSG_CLEAR_ACA: 1550 io->taskio.task_action = 1551 CTL_TASK_CLEAR_ACA; 1552 break; 1553 case MSG_NOOP: 1554 send_ctl_io = 0; 1555 break; 1556 default: 1557 xpt_print(periph->path, "%s: " 1558 "unsupported message 0x%x\n", 1559 __func__, inot->arg); 1560 send_ctl_io = 0; 1561 break; 1562 } 1563 break; 1564 case CAM_REQ_ABORTED: 1565 /* 1566 * This request was sent back by the driver. 1567 * XXX KDM what do we do here? 1568 */ 1569 send_ctl_io = 0; 1570 break; 1571 case CAM_REQ_INVALID: 1572 case CAM_PROVIDE_FAIL: 1573 default: 1574 /* 1575 * We should only get here if we're talking 1576 * to a talking to a SIM that is target 1577 * capable but supports the old API. In 1578 * that case, we need to just free the CCB. 1579 * If we actually send a notify acknowledge, 1580 * it will send that back with an error as 1581 * well. 1582 */ 1583 1584 if ((status != CAM_REQ_INVALID) 1585 && (status != CAM_PROVIDE_FAIL)) 1586 xpt_print(periph->path, "%s: " 1587 "unsupported CAM status " 1588 "0x%x\n", __func__, status); 1589 1590 ctl_free_io(io); 1591 ctlfe_free_ccb(periph, done_ccb); 1592 1593 goto out; 1594 } 1595 if (send_ctl_io != 0) { 1596 ctl_queue(io); 1597 } else { 1598 ctl_free_io(io); 1599 done_ccb->ccb_h.status = CAM_REQ_INPROG; 1600 done_ccb->ccb_h.func_code = 1601 XPT_NOTIFY_ACKNOWLEDGE; 1602 xpt_action(done_ccb); 1603 } 1604 } else { 1605 xpt_print(periph->path, "%s: could not allocate " 1606 "ctl_io for immediate notify!\n", __func__); 1607 /* requeue this to the adapter */ 1608 done_ccb->ccb_h.status = CAM_REQ_INPROG; 1609 done_ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE; 1610 xpt_action(done_ccb); 1611 } 1612 1613 if (frozen != 0) { 1614 cam_release_devq(periph->path, 1615 /*relsim_flags*/ 0, 1616 /*opening reduction*/ 0, 1617 /*timeout*/ 0, 1618 /*getcount_only*/ 0); 1619 } 1620 break; 1621 } 1622 case XPT_NOTIFY_ACKNOWLEDGE: 1623 /* 1624 * Queue this back down to the SIM as an immediate notify. 1625 */ 1626 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY; 1627 xpt_action(done_ccb); 1628 softc->inots_sent++; 1629 break; 1630 case XPT_SET_SIM_KNOB: 1631 case XPT_GET_SIM_KNOB: 1632 break; 1633 default: 1634 panic("%s: unexpected CCB type %#x", __func__, 1635 done_ccb->ccb_h.func_code); 1636 break; 1637 } 1638 1639 out: 1640 mtx_unlock(mtx); 1641 } 1642 1643 static void 1644 ctlfe_onoffline(void *arg, int online) 1645 { 1646 struct ctlfe_softc *bus_softc; 1647 union ccb *ccb; 1648 cam_status status; 1649 struct cam_path *path; 1650 int set_wwnn; 1651 1652 bus_softc = (struct ctlfe_softc *)arg; 1653 1654 set_wwnn = 0; 1655 1656 status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id, 1657 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1658 if (status != CAM_REQ_CMP) { 1659 printf("%s: unable to create path!\n", __func__); 1660 return; 1661 } 1662 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP, M_NOWAIT | M_ZERO); 1663 if (ccb == NULL) { 1664 printf("%s: unable to malloc CCB!\n", __func__); 1665 xpt_free_path(path); 1666 return; 1667 } 1668 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE); 1669 1670 /* 1671 * Copan WWN format: 1672 * 1673 * Bits 63-60: 0x5 NAA, IEEE registered name 1674 * Bits 59-36: 0x000ED5 IEEE Company name assigned to Copan 1675 * Bits 35-12: Copan SSN (Sequential Serial Number) 1676 * Bits 11-8: Type of port: 1677 * 1 == N-Port 1678 * 2 == F-Port 1679 * 3 == NL-Port 1680 * Bits 7-0: 0 == Node Name, >0 == Port Number 1681 */ 1682 1683 if (online != 0) { 1684 1685 ccb->ccb_h.func_code = XPT_GET_SIM_KNOB; 1686 1687 1688 xpt_action(ccb); 1689 1690 1691 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){ 1692 #ifdef RANDOM_WWNN 1693 uint64_t random_bits; 1694 #endif 1695 1696 printf("%s: %s current WWNN %#jx\n", __func__, 1697 bus_softc->port_name, 1698 ccb->knob.xport_specific.fc.wwnn); 1699 printf("%s: %s current WWPN %#jx\n", __func__, 1700 bus_softc->port_name, 1701 ccb->knob.xport_specific.fc.wwpn); 1702 1703 #ifdef RANDOM_WWNN 1704 arc4rand(&random_bits, sizeof(random_bits), 0); 1705 #endif 1706 1707 /* 1708 * XXX KDM this is a bit of a kludge for now. We 1709 * take the current WWNN/WWPN from the card, and 1710 * replace the company identifier and the NL-Port 1711 * indicator and the port number (for the WWPN). 1712 * This should be replaced later with ddb_GetWWNN, 1713 * or possibly a more centralized scheme. (It 1714 * would be nice to have the WWNN/WWPN for each 1715 * port stored in the ctl_port structure.) 1716 */ 1717 #ifdef RANDOM_WWNN 1718 ccb->knob.xport_specific.fc.wwnn = 1719 (random_bits & 1720 0x0000000fffffff00ULL) | 1721 /* Company ID */ 0x5000ED5000000000ULL | 1722 /* NL-Port */ 0x0300; 1723 ccb->knob.xport_specific.fc.wwpn = 1724 (random_bits & 1725 0x0000000fffffff00ULL) | 1726 /* Company ID */ 0x5000ED5000000000ULL | 1727 /* NL-Port */ 0x3000 | 1728 /* Port Num */ (bus_softc->port.targ_port & 0xff); 1729 1730 /* 1731 * This is a bit of an API break/reversal, but if 1732 * we're doing the random WWNN that's a little 1733 * different anyway. So record what we're actually 1734 * using with the frontend code so it's reported 1735 * accurately. 1736 */ 1737 ctl_port_set_wwns(&bus_softc->port, 1738 true, ccb->knob.xport_specific.fc.wwnn, 1739 true, ccb->knob.xport_specific.fc.wwpn); 1740 set_wwnn = 1; 1741 #else /* RANDOM_WWNN */ 1742 /* 1743 * If the user has specified a WWNN/WWPN, send them 1744 * down to the SIM. Otherwise, record what the SIM 1745 * has reported. 1746 */ 1747 if ((bus_softc->port.wwnn != 0) 1748 && (bus_softc->port.wwpn != 0)) { 1749 ccb->knob.xport_specific.fc.wwnn = 1750 bus_softc->port.wwnn; 1751 ccb->knob.xport_specific.fc.wwpn = 1752 bus_softc->port.wwpn; 1753 set_wwnn = 1; 1754 } else { 1755 ctl_port_set_wwns(&bus_softc->port, 1756 true, ccb->knob.xport_specific.fc.wwnn, 1757 true, ccb->knob.xport_specific.fc.wwpn); 1758 } 1759 #endif /* RANDOM_WWNN */ 1760 1761 1762 if (set_wwnn != 0) { 1763 printf("%s: %s new WWNN %#jx\n", __func__, 1764 bus_softc->port_name, 1765 ccb->knob.xport_specific.fc.wwnn); 1766 printf("%s: %s new WWPN %#jx\n", __func__, 1767 bus_softc->port_name, 1768 ccb->knob.xport_specific.fc.wwpn); 1769 } 1770 } else { 1771 printf("%s: %s has no valid WWNN/WWPN\n", __func__, 1772 bus_softc->port_name); 1773 } 1774 } 1775 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB; 1776 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE; 1777 if (set_wwnn != 0) 1778 ccb->knob.xport_specific.valid |= KNOB_VALID_ADDRESS; 1779 1780 if (online != 0) 1781 ccb->knob.xport_specific.fc.role = KNOB_ROLE_TARGET; 1782 else 1783 ccb->knob.xport_specific.fc.role = KNOB_ROLE_NONE; 1784 1785 xpt_action(ccb); 1786 1787 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1788 printf("%s: SIM %s (path id %d) target %s failed with " 1789 "status %#x\n", 1790 __func__, bus_softc->port_name, bus_softc->path_id, 1791 (online != 0) ? "enable" : "disable", 1792 ccb->ccb_h.status); 1793 } else { 1794 printf("%s: SIM %s (path id %d) target %s succeeded\n", 1795 __func__, bus_softc->port_name, bus_softc->path_id, 1796 (online != 0) ? "enable" : "disable"); 1797 } 1798 1799 xpt_free_path(path); 1800 1801 free(ccb, M_TEMP); 1802 1803 return; 1804 } 1805 1806 static void 1807 ctlfe_online(void *arg) 1808 { 1809 struct ctlfe_softc *bus_softc; 1810 struct cam_path *path; 1811 cam_status status; 1812 struct ctlfe_lun_softc *lun_softc; 1813 1814 bus_softc = (struct ctlfe_softc *)arg; 1815 1816 /* 1817 * Create the wildcard LUN before bringing the port online. 1818 */ 1819 status = xpt_create_path(&path, /*periph*/ NULL, 1820 bus_softc->path_id, CAM_TARGET_WILDCARD, 1821 CAM_LUN_WILDCARD); 1822 if (status != CAM_REQ_CMP) { 1823 printf("%s: unable to create path for wildcard periph\n", 1824 __func__); 1825 return; 1826 } 1827 1828 lun_softc = malloc(sizeof(*lun_softc), M_CTLFE, 1829 M_NOWAIT | M_ZERO); 1830 if (lun_softc == NULL) { 1831 xpt_print(path, "%s: unable to allocate softc for " 1832 "wildcard periph\n", __func__); 1833 xpt_free_path(path); 1834 return; 1835 } 1836 1837 xpt_path_lock(path); 1838 lun_softc->parent_softc = bus_softc; 1839 lun_softc->flags |= CTLFE_LUN_WILDCARD; 1840 1841 mtx_lock(&bus_softc->lun_softc_mtx); 1842 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, lun_softc, links); 1843 mtx_unlock(&bus_softc->lun_softc_mtx); 1844 1845 status = cam_periph_alloc(ctlferegister, 1846 ctlfeoninvalidate, 1847 ctlfecleanup, 1848 ctlfestart, 1849 "ctl", 1850 CAM_PERIPH_BIO, 1851 path, 1852 ctlfeasync, 1853 0, 1854 lun_softc); 1855 1856 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1857 const struct cam_status_entry *entry; 1858 1859 entry = cam_fetch_status_entry(status); 1860 1861 printf("%s: CAM error %s (%#x) returned from " 1862 "cam_periph_alloc()\n", __func__, (entry != NULL) ? 1863 entry->status_text : "Unknown", status); 1864 } 1865 1866 ctlfe_onoffline(arg, /*online*/ 1); 1867 1868 xpt_path_unlock(path); 1869 xpt_free_path(path); 1870 } 1871 1872 static void 1873 ctlfe_offline(void *arg) 1874 { 1875 struct ctlfe_softc *bus_softc; 1876 struct cam_path *path; 1877 cam_status status; 1878 struct cam_periph *periph; 1879 1880 bus_softc = (struct ctlfe_softc *)arg; 1881 1882 /* 1883 * Disable the wildcard LUN for this port now that we have taken 1884 * the port offline. 1885 */ 1886 status = xpt_create_path(&path, /*periph*/ NULL, 1887 bus_softc->path_id, CAM_TARGET_WILDCARD, 1888 CAM_LUN_WILDCARD); 1889 if (status != CAM_REQ_CMP) { 1890 printf("%s: unable to create path for wildcard periph\n", 1891 __func__); 1892 return; 1893 } 1894 1895 xpt_path_lock(path); 1896 1897 ctlfe_onoffline(arg, /*online*/ 0); 1898 1899 if ((periph = cam_periph_find(path, "ctl")) != NULL) 1900 cam_periph_invalidate(periph); 1901 1902 xpt_path_unlock(path); 1903 xpt_free_path(path); 1904 } 1905 1906 /* 1907 * This will get called to enable a LUN on every bus that is attached to 1908 * CTL. So we only need to create a path/periph for this particular bus. 1909 */ 1910 static int 1911 ctlfe_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1912 { 1913 struct ctlfe_softc *bus_softc; 1914 struct ctlfe_lun_softc *softc; 1915 struct cam_path *path; 1916 struct cam_periph *periph; 1917 cam_status status; 1918 1919 bus_softc = (struct ctlfe_softc *)arg; 1920 1921 status = xpt_create_path(&path, /*periph*/ NULL, 1922 bus_softc->path_id, 1923 targ_id.id, lun_id); 1924 /* XXX KDM need some way to return status to CTL here? */ 1925 if (status != CAM_REQ_CMP) { 1926 printf("%s: could not create path, status %#x\n", __func__, 1927 status); 1928 return (1); 1929 } 1930 1931 softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO); 1932 xpt_path_lock(path); 1933 periph = cam_periph_find(path, "ctl"); 1934 if (periph != NULL) { 1935 /* We've already got a periph, no need to alloc a new one. */ 1936 xpt_path_unlock(path); 1937 xpt_free_path(path); 1938 free(softc, M_CTLFE); 1939 return (0); 1940 } 1941 1942 softc->parent_softc = bus_softc; 1943 mtx_lock(&bus_softc->lun_softc_mtx); 1944 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links); 1945 mtx_unlock(&bus_softc->lun_softc_mtx); 1946 1947 status = cam_periph_alloc(ctlferegister, 1948 ctlfeoninvalidate, 1949 ctlfecleanup, 1950 ctlfestart, 1951 "ctl", 1952 CAM_PERIPH_BIO, 1953 path, 1954 ctlfeasync, 1955 0, 1956 softc); 1957 1958 xpt_path_unlock(path); 1959 xpt_free_path(path); 1960 return (0); 1961 } 1962 1963 /* 1964 * This will get called when the user removes a LUN to disable that LUN 1965 * on every bus that is attached to CTL. 1966 */ 1967 static int 1968 ctlfe_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1969 { 1970 struct ctlfe_softc *softc; 1971 struct ctlfe_lun_softc *lun_softc; 1972 1973 softc = (struct ctlfe_softc *)arg; 1974 1975 mtx_lock(&softc->lun_softc_mtx); 1976 STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) { 1977 struct cam_path *path; 1978 1979 path = lun_softc->periph->path; 1980 1981 if ((xpt_path_target_id(path) == targ_id.id) 1982 && (xpt_path_lun_id(path) == lun_id)) { 1983 break; 1984 } 1985 } 1986 if (lun_softc == NULL) { 1987 mtx_unlock(&softc->lun_softc_mtx); 1988 printf("%s: can't find target %d lun %d\n", __func__, 1989 targ_id.id, lun_id); 1990 return (1); 1991 } 1992 cam_periph_acquire(lun_softc->periph); 1993 mtx_unlock(&softc->lun_softc_mtx); 1994 1995 cam_periph_lock(lun_softc->periph); 1996 cam_periph_invalidate(lun_softc->periph); 1997 cam_periph_unlock(lun_softc->periph); 1998 cam_periph_release(lun_softc->periph); 1999 return (0); 2000 } 2001 2002 static void 2003 ctlfe_dump_sim(struct cam_sim *sim) 2004 { 2005 2006 printf("%s%d: max tagged openings: %d, max dev openings: %d\n", 2007 sim->sim_name, sim->unit_number, 2008 sim->max_tagged_dev_openings, sim->max_dev_openings); 2009 printf("\n"); 2010 } 2011 2012 /* 2013 * Assumes that the SIM lock is held. 2014 */ 2015 static void 2016 ctlfe_dump_queue(struct ctlfe_lun_softc *softc) 2017 { 2018 struct ccb_hdr *hdr; 2019 struct cam_periph *periph; 2020 int num_items; 2021 2022 periph = softc->periph; 2023 num_items = 0; 2024 2025 TAILQ_FOREACH(hdr, &softc->work_queue, periph_links.tqe) { 2026 union ctl_io *io; 2027 2028 io = hdr->io_ptr; 2029 2030 num_items++; 2031 2032 /* 2033 * This can happen when we get an ATIO but can't allocate 2034 * a ctl_io. See the XPT_ACCEPT_TARGET_IO case in ctlfedone(). 2035 */ 2036 if (io == NULL) { 2037 struct ccb_scsiio *csio; 2038 2039 csio = (struct ccb_scsiio *)hdr; 2040 2041 xpt_print(periph->path, "CCB %#x ctl_io allocation " 2042 "failed\n", csio->tag_id); 2043 continue; 2044 } 2045 2046 /* 2047 * Only regular SCSI I/O is put on the work 2048 * queue, so we can print sense here. There may be no 2049 * sense if it's no the queue for a DMA, but this serves to 2050 * print out the CCB as well. 2051 * 2052 * XXX KDM switch this over to scsi_sense_print() when 2053 * CTL is merged in with CAM. 2054 */ 2055 ctl_io_error_print(io, NULL); 2056 2057 /* 2058 * We're sending status back to the 2059 * initiator, so we're on the queue waiting 2060 * for a CTIO to do that. 2061 */ 2062 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) 2063 continue; 2064 2065 /* 2066 * Otherwise, we're on the queue waiting to 2067 * do a data transfer. 2068 */ 2069 xpt_print(periph->path, "Total %u, Current %u, Resid %u\n", 2070 io->scsiio.kern_total_len, io->scsiio.kern_data_len, 2071 io->scsiio.kern_data_resid); 2072 } 2073 2074 xpt_print(periph->path, "%d requests total waiting for CCBs\n", 2075 num_items); 2076 xpt_print(periph->path, "%ju CCBs outstanding (%ju allocated, %ju " 2077 "freed)\n", (uintmax_t)(softc->ccbs_alloced - 2078 softc->ccbs_freed), (uintmax_t)softc->ccbs_alloced, 2079 (uintmax_t)softc->ccbs_freed); 2080 xpt_print(periph->path, "%ju CTIOs outstanding (%ju sent, %ju " 2081 "returned\n", (uintmax_t)(softc->ctios_sent - 2082 softc->ctios_returned), softc->ctios_sent, 2083 softc->ctios_returned); 2084 } 2085 2086 /* 2087 * This function is called when we fail to get a CCB for a DMA or status return 2088 * to the initiator within the specified time period. 2089 * 2090 * The callout code should insure that we hold the sim mutex here. 2091 */ 2092 static void 2093 ctlfe_dma_timeout(void *arg) 2094 { 2095 struct ctlfe_lun_softc *softc; 2096 struct cam_periph *periph; 2097 struct cam_sim *sim; 2098 int num_queued; 2099 2100 softc = (struct ctlfe_lun_softc *)arg; 2101 periph = softc->periph; 2102 sim = xpt_path_sim(periph->path); 2103 num_queued = 0; 2104 2105 /* 2106 * Nothing to do... 2107 */ 2108 if (TAILQ_FIRST(&softc->work_queue) == NULL) { 2109 xpt_print(periph->path, "TIMEOUT triggered after %d " 2110 "seconds, but nothing on work queue??\n", 2111 CTLFE_DMA_TIMEOUT); 2112 return; 2113 } 2114 2115 xpt_print(periph->path, "TIMEOUT (%d seconds) waiting for DMA to " 2116 "start\n", CTLFE_DMA_TIMEOUT); 2117 2118 ctlfe_dump_queue(softc); 2119 2120 ctlfe_dump_sim(sim); 2121 2122 xpt_print(periph->path, "calling xpt_schedule() to attempt to " 2123 "unstick our queue\n"); 2124 2125 xpt_schedule(periph, /*priority*/ 1); 2126 2127 xpt_print(periph->path, "xpt_schedule() call complete\n"); 2128 } 2129 2130 /* 2131 * Datamove/done routine called by CTL. Put ourselves on the queue to 2132 * receive a CCB from CAM so we can queue the continue I/O request down 2133 * to the adapter. 2134 */ 2135 static void 2136 ctlfe_datamove_done(union ctl_io *io) 2137 { 2138 union ccb *ccb; 2139 struct cam_periph *periph; 2140 struct ctlfe_lun_softc *softc; 2141 2142 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2143 2144 periph = xpt_path_periph(ccb->ccb_h.path); 2145 cam_periph_lock(periph); 2146 2147 softc = (struct ctlfe_lun_softc *)periph->softc; 2148 2149 if (io->io_hdr.io_type == CTL_IO_TASK) { 2150 /* 2151 * Task management commands don't require any further 2152 * communication back to the adapter. Requeue the CCB 2153 * to the adapter, and free the CTL I/O. 2154 */ 2155 xpt_print(ccb->ccb_h.path, "%s: returning task I/O " 2156 "tag %#x seq %#x\n", __func__, 2157 ccb->cin1.tag_id, ccb->cin1.seq_id); 2158 /* 2159 * Send the notify acknowledge down to the SIM, to let it 2160 * know we processed the task management command. 2161 */ 2162 ccb->ccb_h.status = CAM_REQ_INPROG; 2163 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE; 2164 xpt_action(ccb); 2165 ctl_free_io(io); 2166 } else { 2167 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) 2168 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED; 2169 else 2170 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED; 2171 2172 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h, 2173 periph_links.tqe); 2174 2175 /* 2176 * Reset the timeout for our latest active DMA. 2177 */ 2178 callout_reset(&softc->dma_callout, 2179 CTLFE_DMA_TIMEOUT * hz, 2180 ctlfe_dma_timeout, softc); 2181 /* 2182 * Ask for the CAM transport layer to send us a CCB to do 2183 * the DMA or send status, unless ctlfe_dma_enabled is set 2184 * to 0. 2185 */ 2186 if (ctlfe_dma_enabled != 0) 2187 xpt_schedule(periph, /*priority*/ 1); 2188 } 2189 2190 cam_periph_unlock(periph); 2191 } 2192 2193 static void 2194 ctlfe_dump(void) 2195 { 2196 struct ctlfe_softc *bus_softc; 2197 2198 STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) { 2199 struct ctlfe_lun_softc *lun_softc; 2200 2201 ctlfe_dump_sim(bus_softc->sim); 2202 2203 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links) { 2204 ctlfe_dump_queue(lun_softc); 2205 } 2206 } 2207 } 2208