scsi_ctl.c revision 273316
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: stable/10/sys/cam/ctl/scsi_ctl.c 273316 2014-10-20 07:52:48Z mav $"); 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 75typedef enum { 76 CTLFE_CCB_DEFAULT = 0x00 77} ctlfe_ccb_types; 78 79struct 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 90STAILQ_HEAD(, ctlfe_softc) ctlfe_softc_list; 91struct mtx ctlfe_list_mtx; 92static char ctlfe_mtx_desc[] = "ctlfelist"; 93static int ctlfe_dma_enabled = 1; 94#ifdef CTLFE_INIT_ENABLE 95static int ctlfe_max_targets = 1; 96static int ctlfe_num_targets = 0; 97#endif 98 99typedef enum { 100 CTLFE_LUN_NONE = 0x00, 101 CTLFE_LUN_WILDCARD = 0x01 102} ctlfe_lun_flags; 103 104struct 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 122typedef 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 */ 131struct 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 188SYSCTL_INT(_kern_cam_ctl, OID_AUTO, dma_enabled, CTLFLAG_RW, 189 &ctlfe_dma_enabled, 0, "DMA enabled"); 190MALLOC_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 199int ctlfeinitialize(void); 200void ctlfeshutdown(void); 201static periph_init_t ctlfeperiphinit; 202static void ctlfeasync(void *callback_arg, uint32_t code, 203 struct cam_path *path, void *arg); 204static periph_ctor_t ctlferegister; 205static periph_oninv_t ctlfeoninvalidate; 206static periph_dtor_t ctlfecleanup; 207static periph_start_t ctlfestart; 208static void ctlfedone(struct cam_periph *periph, 209 union ccb *done_ccb); 210 211static void ctlfe_onoffline(void *arg, int online); 212static void ctlfe_online(void *arg); 213static void ctlfe_offline(void *arg); 214static int ctlfe_lun_enable(void *arg, struct ctl_id targ_id, 215 int lun_id); 216static int ctlfe_lun_disable(void *arg, struct ctl_id targ_id, 217 int lun_id); 218static void ctlfe_dump_sim(struct cam_sim *sim); 219static void ctlfe_dump_queue(struct ctlfe_lun_softc *softc); 220static void ctlfe_dma_timeout(void *arg); 221static void ctlfe_datamove_done(union ctl_io *io); 222static void ctlfe_dump(void); 223 224static struct periph_driver ctlfe_driver = 225{ 226 ctlfeperiphinit, "ctl", 227 TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0, 228 CAM_PERIPH_DRV_EARLY 229}; 230 231static struct ctl_frontend ctlfe_frontend = 232{ 233 .name = "camtarget", 234 .init = ctlfeinitialize, 235 .fe_dump = ctlfe_dump, 236 .shutdown = ctlfeshutdown, 237}; 238CTL_FRONTEND_DECLARE(ctlfe, ctlfe_frontend); 239 240extern struct ctl_softc *control_softc; 241 242void 243ctlfeshutdown(void) 244{ 245 return; 246} 247 248int 249ctlfeinitialize(void) 250{ 251 252 STAILQ_INIT(&ctlfe_softc_list); 253 mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF); 254 periphdriver_register(&ctlfe_driver); 255 return (0); 256} 257 258void 259ctlfeperiphinit(void) 260{ 261 cam_status status; 262 263 status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED | 264 AC_CONTRACT, ctlfeasync, NULL, NULL); 265 if (status != CAM_REQ_CMP) { 266 printf("ctl: Failed to attach async callback due to CAM " 267 "status 0x%x!\n", status); 268 } 269} 270 271static void 272ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) 273{ 274 275#ifdef CTLFEDEBUG 276 printf("%s: entered\n", __func__); 277#endif 278 279 /* 280 * When a new path gets registered, and it is capable of target 281 * mode, go ahead and attach. Later on, we may need to be more 282 * selective, but for now this will be sufficient. 283 */ 284 switch (code) { 285 case AC_PATH_REGISTERED: { 286 struct ctl_port *port; 287 struct ctlfe_softc *bus_softc; 288 struct ccb_pathinq *cpi; 289 int retval; 290 291 cpi = (struct ccb_pathinq *)arg; 292 293 /* Don't attach if it doesn't support target mode */ 294 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) { 295#ifdef CTLFEDEBUG 296 printf("%s: SIM %s%d doesn't support target mode\n", 297 __func__, cpi->dev_name, cpi->unit_number); 298#endif 299 break; 300 } 301 302#ifdef CTLFE_INIT_ENABLE 303 if (ctlfe_num_targets >= ctlfe_max_targets) { 304 union ccb *ccb; 305 306 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP, 307 M_NOWAIT | M_ZERO); 308 if (ccb == NULL) { 309 printf("%s: unable to malloc CCB!\n", __func__); 310 return; 311 } 312 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE); 313 314 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB; 315 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE; 316 ccb->knob.xport_specific.fc.role = KNOB_ROLE_INITIATOR; 317 318 xpt_action(ccb); 319 320 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != 321 CAM_REQ_CMP) { 322 printf("%s: SIM %s%d (path id %d) initiator " 323 "enable failed with status %#x\n", 324 __func__, cpi->dev_name, 325 cpi->unit_number, cpi->ccb_h.path_id, 326 ccb->ccb_h.status); 327 } else { 328 printf("%s: SIM %s%d (path id %d) initiator " 329 "enable succeeded\n", 330 __func__, cpi->dev_name, 331 cpi->unit_number, cpi->ccb_h.path_id); 332 } 333 334 free(ccb, M_TEMP); 335 336 break; 337 } else { 338 ctlfe_num_targets++; 339 } 340 341 printf("%s: ctlfe_num_targets = %d\n", __func__, 342 ctlfe_num_targets); 343#endif /* CTLFE_INIT_ENABLE */ 344 345 /* 346 * We're in an interrupt context here, so we have to 347 * use M_NOWAIT. Of course this means trouble if we 348 * can't allocate memory. 349 */ 350 bus_softc = malloc(sizeof(*bus_softc), M_CTLFE, 351 M_NOWAIT | M_ZERO); 352 if (bus_softc == NULL) { 353 printf("%s: unable to malloc %zd bytes for softc\n", 354 __func__, sizeof(*bus_softc)); 355 return; 356 } 357 358 bus_softc->path_id = cpi->ccb_h.path_id; 359 bus_softc->sim = xpt_path_sim(path); 360 if (cpi->maxio != 0) 361 bus_softc->maxio = cpi->maxio; 362 else 363 bus_softc->maxio = DFLTPHYS; 364 mtx_init(&bus_softc->lun_softc_mtx, "LUN softc mtx", NULL, 365 MTX_DEF); 366 STAILQ_INIT(&bus_softc->lun_softc_list); 367 368 port = &bus_softc->port; 369 port->frontend = &ctlfe_frontend; 370 371 /* 372 * XXX KDM should we be more accurate here ? 373 */ 374 if (cpi->transport == XPORT_FC) 375 port->port_type = CTL_PORT_FC; 376 else if (cpi->transport == XPORT_SAS) 377 port->port_type = CTL_PORT_SAS; 378 else 379 port->port_type = CTL_PORT_SCSI; 380 381 /* XXX KDM what should the real number be here? */ 382 port->num_requested_ctl_io = 4096; 383 snprintf(bus_softc->port_name, sizeof(bus_softc->port_name), 384 "%s%d", cpi->dev_name, cpi->unit_number); 385 /* 386 * XXX KDM it would be nice to allocate storage in the 387 * frontend structure itself. 388 */ 389 port->port_name = bus_softc->port_name; 390 port->physical_port = cpi->unit_number; 391 port->virtual_port = cpi->bus_id; 392 port->port_online = ctlfe_online; 393 port->port_offline = ctlfe_offline; 394 port->onoff_arg = bus_softc; 395 port->lun_enable = ctlfe_lun_enable; 396 port->lun_disable = ctlfe_lun_disable; 397 port->targ_lun_arg = bus_softc; 398 port->fe_datamove = ctlfe_datamove_done; 399 port->fe_done = ctlfe_datamove_done; 400 /* 401 * XXX KDM the path inquiry doesn't give us the maximum 402 * number of targets supported. 403 */ 404 port->max_targets = cpi->max_target; 405 port->max_target_id = cpi->max_target; 406 407 /* 408 * XXX KDM need to figure out whether we're the master or 409 * slave. 410 */ 411#ifdef CTLFEDEBUG 412 printf("%s: calling ctl_port_register() for %s%d\n", 413 __func__, cpi->dev_name, cpi->unit_number); 414#endif 415 retval = ctl_port_register(port, /*master_SC*/ 1); 416 if (retval != 0) { 417 printf("%s: ctl_port_register() failed with " 418 "error %d!\n", __func__, retval); 419 mtx_destroy(&bus_softc->lun_softc_mtx); 420 free(bus_softc, M_CTLFE); 421 break; 422 } else { 423 mtx_lock(&ctlfe_list_mtx); 424 STAILQ_INSERT_TAIL(&ctlfe_softc_list, bus_softc, links); 425 mtx_unlock(&ctlfe_list_mtx); 426 } 427 428 break; 429 } 430 case AC_PATH_DEREGISTERED: { 431 struct ctlfe_softc *softc = NULL; 432 433 mtx_lock(&ctlfe_list_mtx); 434 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) { 435 if (softc->path_id == xpt_path_path_id(path)) { 436 STAILQ_REMOVE(&ctlfe_softc_list, softc, 437 ctlfe_softc, links); 438 break; 439 } 440 } 441 mtx_unlock(&ctlfe_list_mtx); 442 443 if (softc != NULL) { 444 /* 445 * XXX KDM are we certain at this point that there 446 * are no outstanding commands for this frontend? 447 */ 448 ctl_port_deregister(&softc->port); 449 mtx_destroy(&softc->lun_softc_mtx); 450 free(softc, M_CTLFE); 451 } 452 break; 453 } 454 case AC_CONTRACT: { 455 struct ac_contract *ac; 456 457 ac = (struct ac_contract *)arg; 458 459 switch (ac->contract_number) { 460 case AC_CONTRACT_DEV_CHG: { 461 struct ac_device_changed *dev_chg; 462 struct ctlfe_softc *softc; 463 int retval, found; 464 465 dev_chg = (struct ac_device_changed *)ac->contract_data; 466 467 printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n", 468 __func__, dev_chg->wwpn, dev_chg->port, 469 xpt_path_path_id(path), dev_chg->target, 470 (dev_chg->arrived == 0) ? "left" : "arrived"); 471 472 found = 0; 473 474 mtx_lock(&ctlfe_list_mtx); 475 STAILQ_FOREACH(softc, &ctlfe_softc_list, links) { 476 if (softc->path_id == xpt_path_path_id(path)) { 477 found = 1; 478 break; 479 } 480 } 481 mtx_unlock(&ctlfe_list_mtx); 482 483 if (found == 0) { 484 printf("%s: CTL port for CAM path %u not " 485 "found!\n", __func__, 486 xpt_path_path_id(path)); 487 break; 488 } 489 if (dev_chg->arrived != 0) { 490 retval = ctl_add_initiator(&softc->port, 491 dev_chg->target, dev_chg->wwpn, NULL); 492 } else { 493 retval = ctl_remove_initiator(&softc->port, 494 dev_chg->target); 495 } 496 497 if (retval < 0) { 498 printf("%s: could not %s port %d iid %u " 499 "WWPN %#jx!\n", __func__, 500 (dev_chg->arrived != 0) ? "add" : 501 "remove", softc->port.targ_port, 502 dev_chg->target, 503 (uintmax_t)dev_chg->wwpn); 504 } 505 break; 506 } 507 default: 508 printf("%s: unsupported contract number %ju\n", 509 __func__, (uintmax_t)ac->contract_number); 510 break; 511 } 512 break; 513 } 514 default: 515 break; 516 } 517} 518 519static cam_status 520ctlferegister(struct cam_periph *periph, void *arg) 521{ 522 struct ctlfe_softc *bus_softc; 523 struct ctlfe_lun_softc *softc; 524 union ccb en_lun_ccb; 525 cam_status status; 526 int i; 527 528 softc = (struct ctlfe_lun_softc *)arg; 529 bus_softc = softc->parent_softc; 530 531 TAILQ_INIT(&softc->work_queue); 532 softc->periph = periph; 533 534 callout_init_mtx(&softc->dma_callout, xpt_path_mtx(periph->path), 535 /*flags*/ 0); 536 periph->softc = softc; 537 538 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE); 539 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN; 540 en_lun_ccb.cel.grp6_len = 0; 541 en_lun_ccb.cel.grp7_len = 0; 542 en_lun_ccb.cel.enable = 1; 543 xpt_action(&en_lun_ccb); 544 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK); 545 if (status != CAM_REQ_CMP) { 546 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n", 547 __func__, en_lun_ccb.ccb_h.status); 548 return (status); 549 } 550 551 status = CAM_REQ_CMP; 552 553 for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) { 554 union ccb *new_ccb; 555 556 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE, 557 M_ZERO|M_NOWAIT); 558 if (new_ccb == NULL) { 559 status = CAM_RESRC_UNAVAIL; 560 break; 561 } 562 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1); 563 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO; 564 new_ccb->ccb_h.cbfcnp = ctlfedone; 565 new_ccb->ccb_h.flags |= CAM_UNLOCKED; 566 xpt_action(new_ccb); 567 softc->atios_sent++; 568 status = new_ccb->ccb_h.status; 569 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 570 free(new_ccb, M_CTLFE); 571 break; 572 } 573 } 574 575 status = cam_periph_acquire(periph); 576 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 577 xpt_print(periph->path, "%s: could not acquire reference " 578 "count, status = %#x\n", __func__, status); 579 return (status); 580 } 581 582 if (i == 0) { 583 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, " 584 "status 0x%x\n", __func__, status); 585 return (CAM_REQ_CMP_ERR); 586 } 587 588 for (i = 0; i < CTLFE_IN_PER_LUN; i++) { 589 union ccb *new_ccb; 590 591 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE, 592 M_ZERO|M_NOWAIT); 593 if (new_ccb == NULL) { 594 status = CAM_RESRC_UNAVAIL; 595 break; 596 } 597 598 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1); 599 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY; 600 new_ccb->ccb_h.cbfcnp = ctlfedone; 601 new_ccb->ccb_h.flags |= CAM_UNLOCKED; 602 xpt_action(new_ccb); 603 softc->inots_sent++; 604 status = new_ccb->ccb_h.status; 605 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 606 /* 607 * Note that we don't free the CCB here. If the 608 * status is not CAM_REQ_INPROG, then we're 609 * probably talking to a SIM that says it is 610 * target-capable but doesn't support the 611 * XPT_IMMEDIATE_NOTIFY CCB. i.e. it supports the 612 * older API. In that case, it'll call xpt_done() 613 * on the CCB, and we need to free it in our done 614 * routine as a result. 615 */ 616 break; 617 } 618 } 619 if ((i == 0) 620 || (status != CAM_REQ_INPROG)) { 621 xpt_print(periph->path, "%s: could not allocate immediate " 622 "notify CCBs, status 0x%x\n", __func__, status); 623 return (CAM_REQ_CMP_ERR); 624 } 625 return (CAM_REQ_CMP); 626} 627 628static void 629ctlfeoninvalidate(struct cam_periph *periph) 630{ 631 union ccb en_lun_ccb; 632 cam_status status; 633 struct ctlfe_softc *bus_softc; 634 struct ctlfe_lun_softc *softc; 635 636 softc = (struct ctlfe_lun_softc *)periph->softc; 637 638 xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE); 639 en_lun_ccb.ccb_h.func_code = XPT_EN_LUN; 640 en_lun_ccb.cel.grp6_len = 0; 641 en_lun_ccb.cel.grp7_len = 0; 642 en_lun_ccb.cel.enable = 0; 643 xpt_action(&en_lun_ccb); 644 status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK); 645 if (status != CAM_REQ_CMP) { 646 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n", 647 __func__, en_lun_ccb.ccb_h.status); 648 /* 649 * XXX KDM what do we do now? 650 */ 651 } 652 xpt_print(periph->path, "LUN removed, %ju ATIOs outstanding, %ju " 653 "INOTs outstanding, %d refs\n", softc->atios_sent - 654 softc->atios_returned, softc->inots_sent - 655 softc->inots_returned, periph->refcount); 656 657 bus_softc = softc->parent_softc; 658 mtx_lock(&bus_softc->lun_softc_mtx); 659 STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links); 660 mtx_unlock(&bus_softc->lun_softc_mtx); 661} 662 663static void 664ctlfecleanup(struct cam_periph *periph) 665{ 666 struct ctlfe_lun_softc *softc; 667 668 xpt_print(periph->path, "%s: Called\n", __func__); 669 670 softc = (struct ctlfe_lun_softc *)periph->softc; 671 672 /* 673 * XXX KDM is there anything else that needs to be done here? 674 */ 675 676 callout_stop(&softc->dma_callout); 677 678 free(softc, M_CTLFE); 679} 680 681static void 682ctlfedata(struct ctlfe_lun_softc *softc, union ctl_io *io, 683 ccb_flags *flags, uint8_t **data_ptr, uint32_t *dxfer_len, 684 u_int16_t *sglist_cnt) 685{ 686 struct ctlfe_softc *bus_softc; 687 struct ctlfe_lun_cmd_info *cmd_info; 688 struct ctl_sg_entry *ctl_sglist; 689 bus_dma_segment_t *cam_sglist; 690 size_t off; 691 int i, idx; 692 693 cmd_info = (struct ctlfe_lun_cmd_info *)io->io_hdr.port_priv; 694 bus_softc = softc->parent_softc; 695 696 /* 697 * Set the direction, relative to the initiator. 698 */ 699 *flags &= ~CAM_DIR_MASK; 700 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 701 *flags |= CAM_DIR_IN; 702 else 703 *flags |= CAM_DIR_OUT; 704 705 *flags &= ~CAM_DATA_MASK; 706 idx = cmd_info->cur_transfer_index; 707 off = cmd_info->cur_transfer_off; 708 cmd_info->flags &= ~CTLFE_CMD_PIECEWISE; 709 if (io->scsiio.kern_sg_entries == 0) { 710 /* No S/G list. */ 711 *data_ptr = io->scsiio.kern_data_ptr + off; 712 if (io->scsiio.kern_data_len - off <= bus_softc->maxio) { 713 *dxfer_len = io->scsiio.kern_data_len - off; 714 } else { 715 *dxfer_len = bus_softc->maxio; 716 cmd_info->cur_transfer_index = -1; 717 cmd_info->cur_transfer_off = bus_softc->maxio; 718 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 719 } 720 *sglist_cnt = 0; 721 722 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) 723 *flags |= CAM_DATA_PADDR; 724 else 725 *flags |= CAM_DATA_VADDR; 726 } else { 727 /* S/G list with physical or virtual pointers. */ 728 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 729 cam_sglist = cmd_info->cam_sglist; 730 *dxfer_len = 0; 731 for (i = 0; i < io->scsiio.kern_sg_entries - idx; i++) { 732 cam_sglist[i].ds_addr = (bus_addr_t)ctl_sglist[i + idx].addr + off; 733 if (ctl_sglist[i + idx].len - off <= bus_softc->maxio - *dxfer_len) { 734 cam_sglist[i].ds_len = ctl_sglist[idx + i].len - off; 735 *dxfer_len += cam_sglist[i].ds_len; 736 } else { 737 cam_sglist[i].ds_len = bus_softc->maxio - *dxfer_len; 738 cmd_info->cur_transfer_index = idx + i; 739 cmd_info->cur_transfer_off = cam_sglist[i].ds_len + off; 740 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 741 *dxfer_len += cam_sglist[i].ds_len; 742 if (ctl_sglist[i].len != 0) 743 i++; 744 break; 745 } 746 if (i == (CTLFE_MAX_SEGS - 1) && 747 idx + i < (io->scsiio.kern_sg_entries - 1)) { 748 cmd_info->cur_transfer_index = idx + i + 1; 749 cmd_info->cur_transfer_off = 0; 750 cmd_info->flags |= CTLFE_CMD_PIECEWISE; 751 i++; 752 break; 753 } 754 off = 0; 755 } 756 *sglist_cnt = i; 757 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) 758 *flags |= CAM_DATA_SG_PADDR; 759 else 760 *flags |= CAM_DATA_SG; 761 *data_ptr = (uint8_t *)cam_sglist; 762 } 763} 764 765static void 766ctlfestart(struct cam_periph *periph, union ccb *start_ccb) 767{ 768 struct ctlfe_lun_softc *softc; 769 struct ccb_hdr *ccb_h; 770 771 softc = (struct ctlfe_lun_softc *)periph->softc; 772 773 softc->ccbs_alloced++; 774 775 start_ccb->ccb_h.ccb_type = CTLFE_CCB_DEFAULT; 776 777 ccb_h = TAILQ_FIRST(&softc->work_queue); 778 if (ccb_h == NULL) { 779 softc->ccbs_freed++; 780 xpt_release_ccb(start_ccb); 781 } else { 782 struct ccb_accept_tio *atio; 783 struct ccb_scsiio *csio; 784 uint8_t *data_ptr; 785 uint32_t dxfer_len; 786 ccb_flags flags; 787 union ctl_io *io; 788 uint8_t scsi_status; 789 790 /* Take the ATIO off the work queue */ 791 TAILQ_REMOVE(&softc->work_queue, ccb_h, periph_links.tqe); 792 atio = (struct ccb_accept_tio *)ccb_h; 793 io = (union ctl_io *)ccb_h->io_ptr; 794 csio = &start_ccb->csio; 795 796 flags = atio->ccb_h.flags & 797 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK); 798 799 if ((io == NULL) 800 || (io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 801 /* 802 * We're done, send status back. 803 */ 804 flags |= CAM_SEND_STATUS; 805 if (io == NULL) { 806 scsi_status = SCSI_STATUS_BUSY; 807 csio->sense_len = 0; 808 } else if ((io->io_hdr.flags & CTL_FLAG_ABORT) && 809 (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) { 810 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED; 811 812 /* 813 * If this command was aborted, we don't 814 * need to send status back to the SIM. 815 * Just free the CTIO and ctl_io, and 816 * recycle the ATIO back to the SIM. 817 */ 818 xpt_print(periph->path, "%s: aborted " 819 "command 0x%04x discarded\n", 820 __func__, io->scsiio.tag_num); 821 ctl_free_io(io); 822 /* 823 * For a wildcard attachment, commands can 824 * come in with a specific target/lun. Reset 825 * the target and LUN fields back to the 826 * wildcard values before we send them back 827 * down to the SIM. The SIM has a wildcard 828 * LUN enabled, not whatever target/lun 829 * these happened to be. 830 */ 831 if (softc->flags & CTLFE_LUN_WILDCARD) { 832 atio->ccb_h.target_id = 833 CAM_TARGET_WILDCARD; 834 atio->ccb_h.target_lun = 835 CAM_LUN_WILDCARD; 836 } 837 838 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) { 839 cam_release_devq(periph->path, 840 /*relsim_flags*/0, 841 /*reduction*/0, 842 /*timeout*/0, 843 /*getcount_only*/0); 844 atio->ccb_h.status &= ~CAM_DEV_QFRZN; 845 } 846 847 ccb_h = TAILQ_FIRST(&softc->work_queue); 848 849 if (atio->ccb_h.func_code != 850 XPT_ACCEPT_TARGET_IO) { 851 xpt_print(periph->path, "%s: func_code " 852 "is %#x\n", __func__, 853 atio->ccb_h.func_code); 854 } 855 start_ccb->ccb_h.func_code = XPT_ABORT; 856 start_ccb->cab.abort_ccb = (union ccb *)atio; 857 858 /* Tell the SIM that we've aborted this ATIO */ 859 xpt_action(start_ccb); 860 softc->ccbs_freed++; 861 xpt_release_ccb(start_ccb); 862 863 /* 864 * Send the ATIO back down to the SIM. 865 */ 866 xpt_action((union ccb *)atio); 867 softc->atios_sent++; 868 869 /* 870 * If we still have work to do, ask for 871 * another CCB. Otherwise, deactivate our 872 * callout. 873 */ 874 if (ccb_h != NULL) 875 xpt_schedule(periph, /*priority*/ 1); 876 else 877 callout_stop(&softc->dma_callout); 878 879 return; 880 } else { 881 io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED; 882 scsi_status = io->scsiio.scsi_status; 883 csio->sense_len = io->scsiio.sense_len; 884 } 885 data_ptr = NULL; 886 dxfer_len = 0; 887 if (io == NULL) { 888 printf("%s: tag %04x io is NULL\n", __func__, 889 atio->tag_id); 890 } else { 891#ifdef CTLFEDEBUG 892 printf("%s: tag %04x status %x\n", __func__, 893 atio->tag_id, io->io_hdr.status); 894#endif 895 } 896 csio->sglist_cnt = 0; 897 if (csio->sense_len != 0) { 898 csio->sense_data = io->scsiio.sense_data; 899 flags |= CAM_SEND_SENSE; 900 } else if (scsi_status == SCSI_STATUS_CHECK_COND) { 901 xpt_print(periph->path, "%s: check condition " 902 "with no sense\n", __func__); 903 } 904 } else { 905 struct ctlfe_lun_cmd_info *cmd_info; 906 907 /* 908 * Datamove call, we need to setup the S/G list. 909 */ 910 911 cmd_info = (struct ctlfe_lun_cmd_info *) 912 io->io_hdr.port_priv; 913 914 KASSERT(sizeof(*cmd_info) < CTL_PORT_PRIV_SIZE, 915 ("%s: sizeof(struct ctlfe_lun_cmd_info) %zd < " 916 "CTL_PORT_PRIV_SIZE %d", __func__, 917 sizeof(*cmd_info), CTL_PORT_PRIV_SIZE)); 918 io->io_hdr.flags &= ~CTL_FLAG_DMA_QUEUED; 919 920 /* 921 * Need to zero this, in case it has been used for 922 * a previous datamove for this particular I/O. 923 */ 924 bzero(cmd_info, sizeof(*cmd_info)); 925 scsi_status = 0; 926 927 csio->cdb_len = atio->cdb_len; 928 929 ctlfedata(softc, io, &flags, &data_ptr, &dxfer_len, 930 &csio->sglist_cnt); 931 932 io->scsiio.ext_data_filled += dxfer_len; 933 934 if (io->scsiio.ext_data_filled > 935 io->scsiio.kern_total_len) { 936 xpt_print(periph->path, "%s: tag 0x%04x " 937 "fill len %u > total %u\n", 938 __func__, io->scsiio.tag_num, 939 io->scsiio.ext_data_filled, 940 io->scsiio.kern_total_len); 941 } 942 } 943 944#ifdef CTLFEDEBUG 945 printf("%s: %s: tag %04x flags %x ptr %p len %u\n", __func__, 946 (flags & CAM_SEND_STATUS) ? "done" : "datamove", 947 atio->tag_id, flags, data_ptr, dxfer_len); 948#endif 949 950 /* 951 * Valid combinations: 952 * - CAM_SEND_STATUS, CAM_DATA_SG = 0, dxfer_len = 0, 953 * sglist_cnt = 0 954 * - CAM_SEND_STATUS = 0, CAM_DATA_SG = 0, dxfer_len != 0, 955 * sglist_cnt = 0 956 * - CAM_SEND_STATUS = 0, CAM_DATA_SG, dxfer_len != 0, 957 * sglist_cnt != 0 958 */ 959#ifdef CTLFEDEBUG 960 if (((flags & CAM_SEND_STATUS) 961 && (((flags & CAM_DATA_SG) != 0) 962 || (dxfer_len != 0) 963 || (csio->sglist_cnt != 0))) 964 || (((flags & CAM_SEND_STATUS) == 0) 965 && (dxfer_len == 0)) 966 || ((flags & CAM_DATA_SG) 967 && (csio->sglist_cnt == 0)) 968 || (((flags & CAM_DATA_SG) == 0) 969 && (csio->sglist_cnt != 0))) { 970 printf("%s: tag %04x cdb %02x flags %#x dxfer_len " 971 "%d sg %u\n", __func__, atio->tag_id, 972 atio->cdb_io.cdb_bytes[0], flags, dxfer_len, 973 csio->sglist_cnt); 974 if (io != NULL) { 975 printf("%s: tag %04x io status %#x\n", __func__, 976 atio->tag_id, io->io_hdr.status); 977 } else { 978 printf("%s: tag %04x no associated io\n", 979 __func__, atio->tag_id); 980 } 981 } 982#endif 983 cam_fill_ctio(csio, 984 /*retries*/ 2, 985 ctlfedone, 986 flags, 987 (flags & CAM_TAG_ACTION_VALID) ? 988 MSG_SIMPLE_Q_TAG : 0, 989 atio->tag_id, 990 atio->init_id, 991 scsi_status, 992 /*data_ptr*/ data_ptr, 993 /*dxfer_len*/ dxfer_len, 994 /*timeout*/ 5 * 1000); 995 start_ccb->ccb_h.flags |= CAM_UNLOCKED; 996 start_ccb->ccb_h.ccb_atio = atio; 997 if (((flags & CAM_SEND_STATUS) == 0) 998 && (io != NULL)) 999 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG; 1000 1001 softc->ctios_sent++; 1002 1003 cam_periph_unlock(periph); 1004 xpt_action(start_ccb); 1005 cam_periph_lock(periph); 1006 1007 if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1008 cam_release_devq(periph->path, 1009 /*relsim_flags*/0, 1010 /*reduction*/0, 1011 /*timeout*/0, 1012 /*getcount_only*/0); 1013 atio->ccb_h.status &= ~CAM_DEV_QFRZN; 1014 } 1015 1016 ccb_h = TAILQ_FIRST(&softc->work_queue); 1017 } 1018 /* 1019 * If we still have work to do, ask for another CCB. Otherwise, 1020 * deactivate our callout. 1021 */ 1022 if (ccb_h != NULL) 1023 xpt_schedule(periph, /*priority*/ 1); 1024 else 1025 callout_stop(&softc->dma_callout); 1026} 1027 1028static void 1029ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb) 1030{ 1031 struct ctlfe_lun_softc *softc; 1032 1033 softc = (struct ctlfe_lun_softc *)periph->softc; 1034 1035 switch (ccb->ccb_h.func_code) { 1036 case XPT_ACCEPT_TARGET_IO: 1037 softc->atios_returned++; 1038 break; 1039 case XPT_IMMEDIATE_NOTIFY: 1040 case XPT_NOTIFY_ACKNOWLEDGE: 1041 softc->inots_returned++; 1042 break; 1043 default: 1044 break; 1045 } 1046 1047 free(ccb, M_CTLFE); 1048 1049 KASSERT(softc->atios_returned <= softc->atios_sent, ("%s: " 1050 "atios_returned %ju > atios_sent %ju", __func__, 1051 softc->atios_returned, softc->atios_sent)); 1052 KASSERT(softc->inots_returned <= softc->inots_sent, ("%s: " 1053 "inots_returned %ju > inots_sent %ju", __func__, 1054 softc->inots_returned, softc->inots_sent)); 1055 1056 /* 1057 * If we have received all of our CCBs, we can release our 1058 * reference on the peripheral driver. It will probably go away 1059 * now. 1060 */ 1061 if ((softc->atios_returned == softc->atios_sent) 1062 && (softc->inots_returned == softc->inots_sent)) { 1063 cam_periph_release_locked(periph); 1064 } 1065} 1066 1067static int 1068ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset) 1069{ 1070 uint64_t lba; 1071 uint32_t num_blocks, nbc; 1072 uint8_t *cmdbyt = (atio->ccb_h.flags & CAM_CDB_POINTER)? 1073 atio->cdb_io.cdb_ptr : atio->cdb_io.cdb_bytes; 1074 1075 nbc = offset >> 9; /* ASSUMING 512 BYTE BLOCKS */ 1076 1077 switch (cmdbyt[0]) { 1078 case READ_6: 1079 case WRITE_6: 1080 { 1081 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt; 1082 lba = scsi_3btoul(cdb->addr); 1083 lba &= 0x1fffff; 1084 num_blocks = cdb->length; 1085 if (num_blocks == 0) 1086 num_blocks = 256; 1087 lba += nbc; 1088 num_blocks -= nbc; 1089 scsi_ulto3b(lba, cdb->addr); 1090 cdb->length = num_blocks; 1091 break; 1092 } 1093 case READ_10: 1094 case WRITE_10: 1095 { 1096 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt; 1097 lba = scsi_4btoul(cdb->addr); 1098 num_blocks = scsi_2btoul(cdb->length); 1099 lba += nbc; 1100 num_blocks -= nbc; 1101 scsi_ulto4b(lba, cdb->addr); 1102 scsi_ulto2b(num_blocks, cdb->length); 1103 break; 1104 } 1105 case READ_12: 1106 case WRITE_12: 1107 { 1108 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt; 1109 lba = scsi_4btoul(cdb->addr); 1110 num_blocks = scsi_4btoul(cdb->length); 1111 lba += nbc; 1112 num_blocks -= nbc; 1113 scsi_ulto4b(lba, cdb->addr); 1114 scsi_ulto4b(num_blocks, cdb->length); 1115 break; 1116 } 1117 case READ_16: 1118 case WRITE_16: 1119 case WRITE_ATOMIC_16: 1120 { 1121 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt; 1122 lba = scsi_8btou64(cdb->addr); 1123 num_blocks = scsi_4btoul(cdb->length); 1124 lba += nbc; 1125 num_blocks -= nbc; 1126 scsi_u64to8b(lba, cdb->addr); 1127 scsi_ulto4b(num_blocks, cdb->length); 1128 break; 1129 } 1130 default: 1131 return -1; 1132 } 1133 return (0); 1134} 1135 1136static void 1137ctlfedone(struct cam_periph *periph, union ccb *done_ccb) 1138{ 1139 struct ctlfe_lun_softc *softc; 1140 struct ctlfe_softc *bus_softc; 1141 struct ccb_accept_tio *atio = NULL; 1142 union ctl_io *io = NULL; 1143 struct mtx *mtx; 1144 1145 KASSERT((done_ccb->ccb_h.flags & CAM_UNLOCKED) != 0, 1146 ("CCB in ctlfedone() without CAM_UNLOCKED flag")); 1147#ifdef CTLFE_DEBUG 1148 printf("%s: entered, func_code = %#x, type = %#lx\n", __func__, 1149 done_ccb->ccb_h.func_code, done_ccb->ccb_h.ccb_type); 1150#endif 1151 1152 softc = (struct ctlfe_lun_softc *)periph->softc; 1153 bus_softc = softc->parent_softc; 1154 mtx = cam_periph_mtx(periph); 1155 mtx_lock(mtx); 1156 1157 /* 1158 * If the peripheral is invalid, ATIOs and immediate notify CCBs 1159 * need to be freed. Most of the ATIOs and INOTs that come back 1160 * will be CCBs that are being returned from the SIM as a result of 1161 * our disabling the LUN. 1162 * 1163 * Other CCB types are handled in their respective cases below. 1164 */ 1165 if (periph->flags & CAM_PERIPH_INVALID) { 1166 switch (done_ccb->ccb_h.func_code) { 1167 case XPT_ACCEPT_TARGET_IO: 1168 case XPT_IMMEDIATE_NOTIFY: 1169 case XPT_NOTIFY_ACKNOWLEDGE: 1170 ctlfe_free_ccb(periph, done_ccb); 1171 goto out; 1172 default: 1173 break; 1174 } 1175 1176 } 1177 switch (done_ccb->ccb_h.func_code) { 1178 case XPT_ACCEPT_TARGET_IO: { 1179 1180 atio = &done_ccb->atio; 1181 1182 softc->atios_returned++; 1183 1184 resubmit: 1185 /* 1186 * Allocate a ctl_io, pass it to CTL, and wait for the 1187 * datamove or done. 1188 */ 1189 io = ctl_alloc_io(bus_softc->port.ctl_pool_ref); 1190 if (io == NULL) { 1191 atio->ccb_h.flags &= ~CAM_DIR_MASK; 1192 atio->ccb_h.flags |= CAM_DIR_NONE; 1193 1194 printf("%s: ctl_alloc_io failed!\n", __func__); 1195 1196 /* 1197 * XXX KDM need to set SCSI_STATUS_BUSY, but there 1198 * is no field in the ATIO structure to do that, 1199 * and we aren't able to allocate a ctl_io here. 1200 * What to do? 1201 */ 1202 atio->sense_len = 0; 1203 done_ccb->ccb_h.io_ptr = NULL; 1204 TAILQ_INSERT_TAIL(&softc->work_queue, &atio->ccb_h, 1205 periph_links.tqe); 1206 xpt_schedule(periph, /*priority*/ 1); 1207 break; 1208 } 1209 mtx_unlock(mtx); 1210 ctl_zero_io(io); 1211 1212 /* Save pointers on both sides */ 1213 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = done_ccb; 1214 done_ccb->ccb_h.io_ptr = io; 1215 1216 /* 1217 * Only SCSI I/O comes down this path, resets, etc. come 1218 * down the immediate notify path below. 1219 */ 1220 io->io_hdr.io_type = CTL_IO_SCSI; 1221 io->io_hdr.nexus.initid.id = atio->init_id; 1222 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port; 1223 io->io_hdr.nexus.targ_target.id = atio->ccb_h.target_id; 1224 io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun; 1225 io->scsiio.tag_num = atio->tag_id; 1226 switch (atio->tag_action) { 1227 case CAM_TAG_ACTION_NONE: 1228 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 1229 break; 1230 case MSG_SIMPLE_TASK: 1231 io->scsiio.tag_type = CTL_TAG_SIMPLE; 1232 break; 1233 case MSG_HEAD_OF_QUEUE_TASK: 1234 io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 1235 break; 1236 case MSG_ORDERED_TASK: 1237 io->scsiio.tag_type = CTL_TAG_ORDERED; 1238 break; 1239 case MSG_ACA_TASK: 1240 io->scsiio.tag_type = CTL_TAG_ACA; 1241 break; 1242 default: 1243 io->scsiio.tag_type = CTL_TAG_UNTAGGED; 1244 printf("%s: unhandled tag type %#x!!\n", __func__, 1245 atio->tag_action); 1246 break; 1247 } 1248 if (atio->cdb_len > sizeof(io->scsiio.cdb)) { 1249 printf("%s: WARNING: CDB len %d > ctl_io space %zd\n", 1250 __func__, atio->cdb_len, sizeof(io->scsiio.cdb)); 1251 } 1252 io->scsiio.cdb_len = min(atio->cdb_len, sizeof(io->scsiio.cdb)); 1253 bcopy(atio->cdb_io.cdb_bytes, io->scsiio.cdb, 1254 io->scsiio.cdb_len); 1255 1256#ifdef CTLFEDEBUG 1257 printf("%s: %ju:%d:%ju:%d: tag %04x CDB %02x\n", __func__, 1258 (uintmax_t)io->io_hdr.nexus.initid.id, 1259 io->io_hdr.nexus.targ_port, 1260 (uintmax_t)io->io_hdr.nexus.targ_target.id, 1261 io->io_hdr.nexus.targ_lun, 1262 io->scsiio.tag_num, io->scsiio.cdb[0]); 1263#endif 1264 1265 ctl_queue(io); 1266 return; 1267 } 1268 case XPT_CONT_TARGET_IO: { 1269 int srr = 0; 1270 uint32_t srr_off = 0; 1271 1272 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio; 1273 io = (union ctl_io *)atio->ccb_h.io_ptr; 1274 1275 softc->ctios_returned++; 1276#ifdef CTLFEDEBUG 1277 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n", 1278 __func__, atio->tag_id, done_ccb->ccb_h.flags); 1279#endif 1280 /* 1281 * Handle SRR case were the data pointer is pushed back hack 1282 */ 1283 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV 1284 && done_ccb->csio.msg_ptr != NULL 1285 && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED 1286 && done_ccb->csio.msg_ptr[1] == 5 1287 && done_ccb->csio.msg_ptr[2] == 0) { 1288 srr = 1; 1289 srr_off = 1290 (done_ccb->csio.msg_ptr[3] << 24) 1291 | (done_ccb->csio.msg_ptr[4] << 16) 1292 | (done_ccb->csio.msg_ptr[5] << 8) 1293 | (done_ccb->csio.msg_ptr[6]); 1294 } 1295 1296 if (srr && (done_ccb->ccb_h.flags & CAM_SEND_STATUS)) { 1297 /* 1298 * If status was being sent, the back end data is now 1299 * history. Hack it up and resubmit a new command with 1300 * the CDB adjusted. If the SIM does the right thing, 1301 * all of the resid math should work. 1302 */ 1303 softc->ccbs_freed++; 1304 xpt_release_ccb(done_ccb); 1305 ctl_free_io(io); 1306 if (ctlfe_adjust_cdb(atio, srr_off) == 0) { 1307 done_ccb = (union ccb *)atio; 1308 goto resubmit; 1309 } 1310 /* 1311 * Fall through to doom.... 1312 */ 1313 } else if (srr) { 1314 /* 1315 * If we have an srr and we're still sending data, we 1316 * should be able to adjust offsets and cycle again. 1317 */ 1318 io->scsiio.kern_rel_offset = 1319 io->scsiio.ext_data_filled = srr_off; 1320 io->scsiio.ext_data_len = io->scsiio.kern_total_len - 1321 io->scsiio.kern_rel_offset; 1322 softc->ccbs_freed++; 1323 io->scsiio.io_hdr.status = CTL_STATUS_NONE; 1324 xpt_release_ccb(done_ccb); 1325 TAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h, 1326 periph_links.tqe); 1327 xpt_schedule(periph, /*priority*/ 1); 1328 break; 1329 } 1330 1331 /* 1332 * If we were sending status back to the initiator, free up 1333 * resources. If we were doing a datamove, call the 1334 * datamove done routine. 1335 */ 1336 if (done_ccb->ccb_h.flags & CAM_SEND_STATUS) { 1337 softc->ccbs_freed++; 1338 xpt_release_ccb(done_ccb); 1339 ctl_free_io(io); 1340 /* 1341 * For a wildcard attachment, commands can come in 1342 * with a specific target/lun. Reset the target 1343 * and LUN fields back to the wildcard values before 1344 * we send them back down to the SIM. The SIM has 1345 * a wildcard LUN enabled, not whatever target/lun 1346 * these happened to be. 1347 */ 1348 if (softc->flags & CTLFE_LUN_WILDCARD) { 1349 atio->ccb_h.target_id = CAM_TARGET_WILDCARD; 1350 atio->ccb_h.target_lun = CAM_LUN_WILDCARD; 1351 } 1352 if (periph->flags & CAM_PERIPH_INVALID) { 1353 ctlfe_free_ccb(periph, (union ccb *)atio); 1354 } else { 1355 softc->atios_sent++; 1356 mtx_unlock(mtx); 1357 xpt_action((union ccb *)atio); 1358 return; 1359 } 1360 } else { 1361 struct ctlfe_lun_cmd_info *cmd_info; 1362 struct ccb_scsiio *csio; 1363 1364 csio = &done_ccb->csio; 1365 cmd_info = (struct ctlfe_lun_cmd_info *) 1366 io->io_hdr.port_priv; 1367 1368 io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG; 1369 1370 io->scsiio.ext_data_len += csio->dxfer_len; 1371 if (io->scsiio.ext_data_len > 1372 io->scsiio.kern_total_len) { 1373 xpt_print(periph->path, "%s: tag 0x%04x " 1374 "done len %u > total %u sent %u\n", 1375 __func__, io->scsiio.tag_num, 1376 io->scsiio.ext_data_len, 1377 io->scsiio.kern_total_len, 1378 io->scsiio.ext_data_filled); 1379 } 1380 /* 1381 * Translate CAM status to CTL status. Success 1382 * does not change the overall, ctl_io status. In 1383 * that case we just set port_status to 0. If we 1384 * have a failure, though, set a data phase error 1385 * for the overall ctl_io. 1386 */ 1387 switch (done_ccb->ccb_h.status & CAM_STATUS_MASK) { 1388 case CAM_REQ_CMP: 1389 io->io_hdr.port_status = 0; 1390 break; 1391 default: 1392 /* 1393 * XXX KDM we probably need to figure out a 1394 * standard set of errors that the SIM 1395 * drivers should return in the event of a 1396 * data transfer failure. A data phase 1397 * error will at least point the user to a 1398 * data transfer error of some sort. 1399 * Hopefully the SIM printed out some 1400 * additional information to give the user 1401 * a clue what happened. 1402 */ 1403 io->io_hdr.port_status = 0xbad1; 1404 ctl_set_data_phase_error(&io->scsiio); 1405 /* 1406 * XXX KDM figure out residual. 1407 */ 1408 break; 1409 } 1410 /* 1411 * If we had to break this S/G list into multiple 1412 * pieces, figure out where we are in the list, and 1413 * continue sending pieces if necessary. 1414 */ 1415 if ((cmd_info->flags & CTLFE_CMD_PIECEWISE) 1416 && (io->io_hdr.port_status == 0)) { 1417 ccb_flags flags; 1418 uint8_t scsi_status; 1419 uint8_t *data_ptr; 1420 uint32_t dxfer_len; 1421 1422 flags = atio->ccb_h.flags & 1423 (CAM_DIS_DISCONNECT| 1424 CAM_TAG_ACTION_VALID); 1425 1426 ctlfedata(softc, io, &flags, &data_ptr, 1427 &dxfer_len, &csio->sglist_cnt); 1428 1429 scsi_status = 0; 1430 1431 if (((flags & CAM_SEND_STATUS) == 0) 1432 && (dxfer_len == 0)) { 1433 printf("%s: tag %04x no status or " 1434 "len cdb = %02x\n", __func__, 1435 atio->tag_id, 1436 atio->cdb_io.cdb_bytes[0]); 1437 printf("%s: tag %04x io status %#x\n", 1438 __func__, atio->tag_id, 1439 io->io_hdr.status); 1440 } 1441 1442 cam_fill_ctio(csio, 1443 /*retries*/ 2, 1444 ctlfedone, 1445 flags, 1446 (flags & CAM_TAG_ACTION_VALID) ? 1447 MSG_SIMPLE_Q_TAG : 0, 1448 atio->tag_id, 1449 atio->init_id, 1450 scsi_status, 1451 /*data_ptr*/ data_ptr, 1452 /*dxfer_len*/ dxfer_len, 1453 /*timeout*/ 5 * 1000); 1454 1455 csio->ccb_h.flags |= CAM_UNLOCKED; 1456 csio->resid = 0; 1457 csio->ccb_h.ccb_atio = atio; 1458 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG; 1459 softc->ctios_sent++; 1460 mtx_unlock(mtx); 1461 xpt_action((union ccb *)csio); 1462 } else { 1463 /* 1464 * Release the CTIO. The ATIO will be sent back 1465 * down to the SIM once we send status. 1466 */ 1467 softc->ccbs_freed++; 1468 xpt_release_ccb(done_ccb); 1469 mtx_unlock(mtx); 1470 1471 /* Call the backend move done callback */ 1472 io->scsiio.be_move_done(io); 1473 } 1474 return; 1475 } 1476 break; 1477 } 1478 case XPT_IMMEDIATE_NOTIFY: { 1479 union ctl_io *io; 1480 struct ccb_immediate_notify *inot; 1481 cam_status status; 1482 int frozen; 1483 1484 inot = &done_ccb->cin1; 1485 1486 softc->inots_returned++; 1487 1488 frozen = (done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0; 1489 1490 printf("%s: got XPT_IMMEDIATE_NOTIFY status %#x tag %#x " 1491 "seq %#x\n", __func__, inot->ccb_h.status, 1492 inot->tag_id, inot->seq_id); 1493 1494 io = ctl_alloc_io(bus_softc->port.ctl_pool_ref); 1495 if (io != NULL) { 1496 int send_ctl_io; 1497 1498 send_ctl_io = 1; 1499 1500 ctl_zero_io(io); 1501 io->io_hdr.io_type = CTL_IO_TASK; 1502 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr =done_ccb; 1503 inot->ccb_h.io_ptr = io; 1504 io->io_hdr.nexus.initid.id = inot->initiator_id; 1505 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port; 1506 io->io_hdr.nexus.targ_target.id = inot->ccb_h.target_id; 1507 io->io_hdr.nexus.targ_lun = inot->ccb_h.target_lun; 1508 /* XXX KDM should this be the tag_id? */ 1509 io->taskio.tag_num = inot->seq_id; 1510 1511 status = inot->ccb_h.status & CAM_STATUS_MASK; 1512 switch (status) { 1513 case CAM_SCSI_BUS_RESET: 1514 io->taskio.task_action = CTL_TASK_BUS_RESET; 1515 break; 1516 case CAM_BDR_SENT: 1517 io->taskio.task_action = CTL_TASK_TARGET_RESET; 1518 break; 1519 case CAM_MESSAGE_RECV: 1520 switch (inot->arg) { 1521 case MSG_ABORT_TASK_SET: 1522 /* 1523 * XXX KDM this isn't currently 1524 * supported by CTL. It ends up 1525 * being a no-op. 1526 */ 1527 io->taskio.task_action = 1528 CTL_TASK_ABORT_TASK_SET; 1529 break; 1530 case MSG_TARGET_RESET: 1531 io->taskio.task_action = 1532 CTL_TASK_TARGET_RESET; 1533 break; 1534 case MSG_ABORT_TASK: 1535 io->taskio.task_action = 1536 CTL_TASK_ABORT_TASK; 1537 break; 1538 case MSG_LOGICAL_UNIT_RESET: 1539 io->taskio.task_action = 1540 CTL_TASK_LUN_RESET; 1541 break; 1542 case MSG_CLEAR_TASK_SET: 1543 /* 1544 * XXX KDM this isn't currently 1545 * supported by CTL. It ends up 1546 * being a no-op. 1547 */ 1548 io->taskio.task_action = 1549 CTL_TASK_CLEAR_TASK_SET; 1550 break; 1551 case MSG_CLEAR_ACA: 1552 io->taskio.task_action = 1553 CTL_TASK_CLEAR_ACA; 1554 break; 1555 case MSG_NOOP: 1556 send_ctl_io = 0; 1557 break; 1558 default: 1559 xpt_print(periph->path, "%s: " 1560 "unsupported message 0x%x\n", 1561 __func__, inot->arg); 1562 send_ctl_io = 0; 1563 break; 1564 } 1565 break; 1566 case CAM_REQ_ABORTED: 1567 /* 1568 * This request was sent back by the driver. 1569 * XXX KDM what do we do here? 1570 */ 1571 send_ctl_io = 0; 1572 break; 1573 case CAM_REQ_INVALID: 1574 case CAM_PROVIDE_FAIL: 1575 default: 1576 /* 1577 * We should only get here if we're talking 1578 * to a talking to a SIM that is target 1579 * capable but supports the old API. In 1580 * that case, we need to just free the CCB. 1581 * If we actually send a notify acknowledge, 1582 * it will send that back with an error as 1583 * well. 1584 */ 1585 1586 if ((status != CAM_REQ_INVALID) 1587 && (status != CAM_PROVIDE_FAIL)) 1588 xpt_print(periph->path, "%s: " 1589 "unsupported CAM status " 1590 "0x%x\n", __func__, status); 1591 1592 ctl_free_io(io); 1593 ctlfe_free_ccb(periph, done_ccb); 1594 1595 goto out; 1596 } 1597 if (send_ctl_io != 0) { 1598 ctl_queue(io); 1599 } else { 1600 ctl_free_io(io); 1601 done_ccb->ccb_h.status = CAM_REQ_INPROG; 1602 done_ccb->ccb_h.func_code = 1603 XPT_NOTIFY_ACKNOWLEDGE; 1604 xpt_action(done_ccb); 1605 } 1606 } else { 1607 xpt_print(periph->path, "%s: could not allocate " 1608 "ctl_io for immediate notify!\n", __func__); 1609 /* requeue this to the adapter */ 1610 done_ccb->ccb_h.status = CAM_REQ_INPROG; 1611 done_ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE; 1612 xpt_action(done_ccb); 1613 } 1614 1615 if (frozen != 0) { 1616 cam_release_devq(periph->path, 1617 /*relsim_flags*/ 0, 1618 /*opening reduction*/ 0, 1619 /*timeout*/ 0, 1620 /*getcount_only*/ 0); 1621 } 1622 break; 1623 } 1624 case XPT_NOTIFY_ACKNOWLEDGE: 1625 /* 1626 * Queue this back down to the SIM as an immediate notify. 1627 */ 1628 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY; 1629 xpt_action(done_ccb); 1630 softc->inots_sent++; 1631 break; 1632 case XPT_SET_SIM_KNOB: 1633 case XPT_GET_SIM_KNOB: 1634 break; 1635 default: 1636 panic("%s: unexpected CCB type %#x", __func__, 1637 done_ccb->ccb_h.func_code); 1638 break; 1639 } 1640 1641out: 1642 mtx_unlock(mtx); 1643} 1644 1645static void 1646ctlfe_onoffline(void *arg, int online) 1647{ 1648 struct ctlfe_softc *bus_softc; 1649 union ccb *ccb; 1650 cam_status status; 1651 struct cam_path *path; 1652 int set_wwnn; 1653 1654 bus_softc = (struct ctlfe_softc *)arg; 1655 1656 set_wwnn = 0; 1657 1658 status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id, 1659 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1660 if (status != CAM_REQ_CMP) { 1661 printf("%s: unable to create path!\n", __func__); 1662 return; 1663 } 1664 ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP, M_NOWAIT | M_ZERO); 1665 if (ccb == NULL) { 1666 printf("%s: unable to malloc CCB!\n", __func__); 1667 xpt_free_path(path); 1668 return; 1669 } 1670 xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE); 1671 1672 /* 1673 * Copan WWN format: 1674 * 1675 * Bits 63-60: 0x5 NAA, IEEE registered name 1676 * Bits 59-36: 0x000ED5 IEEE Company name assigned to Copan 1677 * Bits 35-12: Copan SSN (Sequential Serial Number) 1678 * Bits 11-8: Type of port: 1679 * 1 == N-Port 1680 * 2 == F-Port 1681 * 3 == NL-Port 1682 * Bits 7-0: 0 == Node Name, >0 == Port Number 1683 */ 1684 1685 if (online != 0) { 1686 1687 ccb->ccb_h.func_code = XPT_GET_SIM_KNOB; 1688 1689 1690 xpt_action(ccb); 1691 1692 1693 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){ 1694#ifdef RANDOM_WWNN 1695 uint64_t random_bits; 1696#endif 1697 1698 printf("%s: %s current WWNN %#jx\n", __func__, 1699 bus_softc->port_name, 1700 ccb->knob.xport_specific.fc.wwnn); 1701 printf("%s: %s current WWPN %#jx\n", __func__, 1702 bus_softc->port_name, 1703 ccb->knob.xport_specific.fc.wwpn); 1704 1705#ifdef RANDOM_WWNN 1706 arc4rand(&random_bits, sizeof(random_bits), 0); 1707#endif 1708 1709 /* 1710 * XXX KDM this is a bit of a kludge for now. We 1711 * take the current WWNN/WWPN from the card, and 1712 * replace the company identifier and the NL-Port 1713 * indicator and the port number (for the WWPN). 1714 * This should be replaced later with ddb_GetWWNN, 1715 * or possibly a more centralized scheme. (It 1716 * would be nice to have the WWNN/WWPN for each 1717 * port stored in the ctl_port structure.) 1718 */ 1719#ifdef RANDOM_WWNN 1720 ccb->knob.xport_specific.fc.wwnn = 1721 (random_bits & 1722 0x0000000fffffff00ULL) | 1723 /* Company ID */ 0x5000ED5000000000ULL | 1724 /* NL-Port */ 0x0300; 1725 ccb->knob.xport_specific.fc.wwpn = 1726 (random_bits & 1727 0x0000000fffffff00ULL) | 1728 /* Company ID */ 0x5000ED5000000000ULL | 1729 /* NL-Port */ 0x3000 | 1730 /* Port Num */ (bus_softc->port.targ_port & 0xff); 1731 1732 /* 1733 * This is a bit of an API break/reversal, but if 1734 * we're doing the random WWNN that's a little 1735 * different anyway. So record what we're actually 1736 * using with the frontend code so it's reported 1737 * accurately. 1738 */ 1739 ctl_port_set_wwns(&bus_softc->port, 1740 true, ccb->knob.xport_specific.fc.wwnn, 1741 true, ccb->knob.xport_specific.fc.wwpn); 1742 set_wwnn = 1; 1743#else /* RANDOM_WWNN */ 1744 /* 1745 * If the user has specified a WWNN/WWPN, send them 1746 * down to the SIM. Otherwise, record what the SIM 1747 * has reported. 1748 */ 1749 if ((bus_softc->port.wwnn != 0) 1750 && (bus_softc->port.wwpn != 0)) { 1751 ccb->knob.xport_specific.fc.wwnn = 1752 bus_softc->port.wwnn; 1753 ccb->knob.xport_specific.fc.wwpn = 1754 bus_softc->port.wwpn; 1755 set_wwnn = 1; 1756 } else { 1757 ctl_port_set_wwns(&bus_softc->port, 1758 true, ccb->knob.xport_specific.fc.wwnn, 1759 true, ccb->knob.xport_specific.fc.wwpn); 1760 } 1761#endif /* RANDOM_WWNN */ 1762 1763 1764 if (set_wwnn != 0) { 1765 printf("%s: %s new WWNN %#jx\n", __func__, 1766 bus_softc->port_name, 1767 ccb->knob.xport_specific.fc.wwnn); 1768 printf("%s: %s new WWPN %#jx\n", __func__, 1769 bus_softc->port_name, 1770 ccb->knob.xport_specific.fc.wwpn); 1771 } 1772 } else { 1773 printf("%s: %s has no valid WWNN/WWPN\n", __func__, 1774 bus_softc->port_name); 1775 } 1776 } 1777 ccb->ccb_h.func_code = XPT_SET_SIM_KNOB; 1778 ccb->knob.xport_specific.valid = KNOB_VALID_ROLE; 1779 if (set_wwnn != 0) 1780 ccb->knob.xport_specific.valid |= KNOB_VALID_ADDRESS; 1781 1782 if (online != 0) 1783 ccb->knob.xport_specific.fc.role = KNOB_ROLE_TARGET; 1784 else 1785 ccb->knob.xport_specific.fc.role = KNOB_ROLE_NONE; 1786 1787 xpt_action(ccb); 1788 1789 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1790 printf("%s: SIM %s (path id %d) target %s failed with " 1791 "status %#x\n", 1792 __func__, bus_softc->port_name, bus_softc->path_id, 1793 (online != 0) ? "enable" : "disable", 1794 ccb->ccb_h.status); 1795 } else { 1796 printf("%s: SIM %s (path id %d) target %s succeeded\n", 1797 __func__, bus_softc->port_name, bus_softc->path_id, 1798 (online != 0) ? "enable" : "disable"); 1799 } 1800 1801 xpt_free_path(path); 1802 1803 free(ccb, M_TEMP); 1804 1805 return; 1806} 1807 1808static void 1809ctlfe_online(void *arg) 1810{ 1811 struct ctlfe_softc *bus_softc; 1812 struct cam_path *path; 1813 cam_status status; 1814 struct ctlfe_lun_softc *lun_softc; 1815 1816 bus_softc = (struct ctlfe_softc *)arg; 1817 1818 /* 1819 * Create the wildcard LUN before bringing the port online. 1820 */ 1821 status = xpt_create_path(&path, /*periph*/ NULL, 1822 bus_softc->path_id, CAM_TARGET_WILDCARD, 1823 CAM_LUN_WILDCARD); 1824 if (status != CAM_REQ_CMP) { 1825 printf("%s: unable to create path for wildcard periph\n", 1826 __func__); 1827 return; 1828 } 1829 1830 lun_softc = malloc(sizeof(*lun_softc), M_CTLFE, 1831 M_NOWAIT | M_ZERO); 1832 if (lun_softc == NULL) { 1833 xpt_print(path, "%s: unable to allocate softc for " 1834 "wildcard periph\n", __func__); 1835 xpt_free_path(path); 1836 return; 1837 } 1838 1839 xpt_path_lock(path); 1840 lun_softc->parent_softc = bus_softc; 1841 lun_softc->flags |= CTLFE_LUN_WILDCARD; 1842 1843 mtx_lock(&bus_softc->lun_softc_mtx); 1844 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, lun_softc, links); 1845 mtx_unlock(&bus_softc->lun_softc_mtx); 1846 1847 status = cam_periph_alloc(ctlferegister, 1848 ctlfeoninvalidate, 1849 ctlfecleanup, 1850 ctlfestart, 1851 "ctl", 1852 CAM_PERIPH_BIO, 1853 path, 1854 ctlfeasync, 1855 0, 1856 lun_softc); 1857 1858 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1859 const struct cam_status_entry *entry; 1860 1861 entry = cam_fetch_status_entry(status); 1862 1863 printf("%s: CAM error %s (%#x) returned from " 1864 "cam_periph_alloc()\n", __func__, (entry != NULL) ? 1865 entry->status_text : "Unknown", status); 1866 } 1867 1868 ctlfe_onoffline(arg, /*online*/ 1); 1869 1870 xpt_path_unlock(path); 1871 xpt_free_path(path); 1872} 1873 1874static void 1875ctlfe_offline(void *arg) 1876{ 1877 struct ctlfe_softc *bus_softc; 1878 struct cam_path *path; 1879 cam_status status; 1880 struct cam_periph *periph; 1881 1882 bus_softc = (struct ctlfe_softc *)arg; 1883 1884 /* 1885 * Disable the wildcard LUN for this port now that we have taken 1886 * the port offline. 1887 */ 1888 status = xpt_create_path(&path, /*periph*/ NULL, 1889 bus_softc->path_id, CAM_TARGET_WILDCARD, 1890 CAM_LUN_WILDCARD); 1891 if (status != CAM_REQ_CMP) { 1892 printf("%s: unable to create path for wildcard periph\n", 1893 __func__); 1894 return; 1895 } 1896 1897 xpt_path_lock(path); 1898 1899 ctlfe_onoffline(arg, /*online*/ 0); 1900 1901 if ((periph = cam_periph_find(path, "ctl")) != NULL) 1902 cam_periph_invalidate(periph); 1903 1904 xpt_path_unlock(path); 1905 xpt_free_path(path); 1906} 1907 1908/* 1909 * This will get called to enable a LUN on every bus that is attached to 1910 * CTL. So we only need to create a path/periph for this particular bus. 1911 */ 1912static int 1913ctlfe_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1914{ 1915 struct ctlfe_softc *bus_softc; 1916 struct ctlfe_lun_softc *softc; 1917 struct cam_path *path; 1918 struct cam_periph *periph; 1919 cam_status status; 1920 1921 bus_softc = (struct ctlfe_softc *)arg; 1922 1923 status = xpt_create_path(&path, /*periph*/ NULL, 1924 bus_softc->path_id, 1925 targ_id.id, lun_id); 1926 /* XXX KDM need some way to return status to CTL here? */ 1927 if (status != CAM_REQ_CMP) { 1928 printf("%s: could not create path, status %#x\n", __func__, 1929 status); 1930 return (1); 1931 } 1932 1933 softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO); 1934 xpt_path_lock(path); 1935 periph = cam_periph_find(path, "ctl"); 1936 if (periph != NULL) { 1937 /* We've already got a periph, no need to alloc a new one. */ 1938 xpt_path_unlock(path); 1939 xpt_free_path(path); 1940 free(softc, M_CTLFE); 1941 return (0); 1942 } 1943 1944 softc->parent_softc = bus_softc; 1945 mtx_lock(&bus_softc->lun_softc_mtx); 1946 STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links); 1947 mtx_unlock(&bus_softc->lun_softc_mtx); 1948 1949 status = cam_periph_alloc(ctlferegister, 1950 ctlfeoninvalidate, 1951 ctlfecleanup, 1952 ctlfestart, 1953 "ctl", 1954 CAM_PERIPH_BIO, 1955 path, 1956 ctlfeasync, 1957 0, 1958 softc); 1959 1960 xpt_path_unlock(path); 1961 xpt_free_path(path); 1962 return (0); 1963} 1964 1965/* 1966 * This will get called when the user removes a LUN to disable that LUN 1967 * on every bus that is attached to CTL. 1968 */ 1969static int 1970ctlfe_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1971{ 1972 struct ctlfe_softc *softc; 1973 struct ctlfe_lun_softc *lun_softc; 1974 1975 softc = (struct ctlfe_softc *)arg; 1976 1977 mtx_lock(&softc->lun_softc_mtx); 1978 STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) { 1979 struct cam_path *path; 1980 1981 path = lun_softc->periph->path; 1982 1983 if ((xpt_path_target_id(path) == targ_id.id) 1984 && (xpt_path_lun_id(path) == lun_id)) { 1985 break; 1986 } 1987 } 1988 if (lun_softc == NULL) { 1989 mtx_unlock(&softc->lun_softc_mtx); 1990 printf("%s: can't find target %d lun %d\n", __func__, 1991 targ_id.id, lun_id); 1992 return (1); 1993 } 1994 cam_periph_acquire(lun_softc->periph); 1995 mtx_unlock(&softc->lun_softc_mtx); 1996 1997 cam_periph_lock(lun_softc->periph); 1998 cam_periph_invalidate(lun_softc->periph); 1999 cam_periph_unlock(lun_softc->periph); 2000 cam_periph_release(lun_softc->periph); 2001 return (0); 2002} 2003 2004static void 2005ctlfe_dump_sim(struct cam_sim *sim) 2006{ 2007 2008 printf("%s%d: max tagged openings: %d, max dev openings: %d\n", 2009 sim->sim_name, sim->unit_number, 2010 sim->max_tagged_dev_openings, sim->max_dev_openings); 2011 printf("\n"); 2012} 2013 2014/* 2015 * Assumes that the SIM lock is held. 2016 */ 2017static void 2018ctlfe_dump_queue(struct ctlfe_lun_softc *softc) 2019{ 2020 struct ccb_hdr *hdr; 2021 struct cam_periph *periph; 2022 int num_items; 2023 2024 periph = softc->periph; 2025 num_items = 0; 2026 2027 TAILQ_FOREACH(hdr, &softc->work_queue, periph_links.tqe) { 2028 union ctl_io *io; 2029 2030 io = hdr->io_ptr; 2031 2032 num_items++; 2033 2034 /* 2035 * This can happen when we get an ATIO but can't allocate 2036 * a ctl_io. See the XPT_ACCEPT_TARGET_IO case in ctlfedone(). 2037 */ 2038 if (io == NULL) { 2039 struct ccb_scsiio *csio; 2040 2041 csio = (struct ccb_scsiio *)hdr; 2042 2043 xpt_print(periph->path, "CCB %#x ctl_io allocation " 2044 "failed\n", csio->tag_id); 2045 continue; 2046 } 2047 2048 /* 2049 * Only regular SCSI I/O is put on the work 2050 * queue, so we can print sense here. There may be no 2051 * sense if it's no the queue for a DMA, but this serves to 2052 * print out the CCB as well. 2053 * 2054 * XXX KDM switch this over to scsi_sense_print() when 2055 * CTL is merged in with CAM. 2056 */ 2057 ctl_io_error_print(io, NULL); 2058 2059 /* 2060 * We're sending status back to the 2061 * initiator, so we're on the queue waiting 2062 * for a CTIO to do that. 2063 */ 2064 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) 2065 continue; 2066 2067 /* 2068 * Otherwise, we're on the queue waiting to 2069 * do a data transfer. 2070 */ 2071 xpt_print(periph->path, "Total %u, Current %u, Resid %u\n", 2072 io->scsiio.kern_total_len, io->scsiio.kern_data_len, 2073 io->scsiio.kern_data_resid); 2074 } 2075 2076 xpt_print(periph->path, "%d requests total waiting for CCBs\n", 2077 num_items); 2078 xpt_print(periph->path, "%ju CCBs outstanding (%ju allocated, %ju " 2079 "freed)\n", (uintmax_t)(softc->ccbs_alloced - 2080 softc->ccbs_freed), (uintmax_t)softc->ccbs_alloced, 2081 (uintmax_t)softc->ccbs_freed); 2082 xpt_print(periph->path, "%ju CTIOs outstanding (%ju sent, %ju " 2083 "returned\n", (uintmax_t)(softc->ctios_sent - 2084 softc->ctios_returned), softc->ctios_sent, 2085 softc->ctios_returned); 2086} 2087 2088/* 2089 * This function is called when we fail to get a CCB for a DMA or status return 2090 * to the initiator within the specified time period. 2091 * 2092 * The callout code should insure that we hold the sim mutex here. 2093 */ 2094static void 2095ctlfe_dma_timeout(void *arg) 2096{ 2097 struct ctlfe_lun_softc *softc; 2098 struct cam_periph *periph; 2099 struct cam_sim *sim; 2100 int num_queued; 2101 2102 softc = (struct ctlfe_lun_softc *)arg; 2103 periph = softc->periph; 2104 sim = xpt_path_sim(periph->path); 2105 num_queued = 0; 2106 2107 /* 2108 * Nothing to do... 2109 */ 2110 if (TAILQ_FIRST(&softc->work_queue) == NULL) { 2111 xpt_print(periph->path, "TIMEOUT triggered after %d " 2112 "seconds, but nothing on work queue??\n", 2113 CTLFE_DMA_TIMEOUT); 2114 return; 2115 } 2116 2117 xpt_print(periph->path, "TIMEOUT (%d seconds) waiting for DMA to " 2118 "start\n", CTLFE_DMA_TIMEOUT); 2119 2120 ctlfe_dump_queue(softc); 2121 2122 ctlfe_dump_sim(sim); 2123 2124 xpt_print(periph->path, "calling xpt_schedule() to attempt to " 2125 "unstick our queue\n"); 2126 2127 xpt_schedule(periph, /*priority*/ 1); 2128 2129 xpt_print(periph->path, "xpt_schedule() call complete\n"); 2130} 2131 2132/* 2133 * Datamove/done routine called by CTL. Put ourselves on the queue to 2134 * receive a CCB from CAM so we can queue the continue I/O request down 2135 * to the adapter. 2136 */ 2137static void 2138ctlfe_datamove_done(union ctl_io *io) 2139{ 2140 union ccb *ccb; 2141 struct cam_periph *periph; 2142 struct ctlfe_lun_softc *softc; 2143 2144 ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2145 2146 periph = xpt_path_periph(ccb->ccb_h.path); 2147 cam_periph_lock(periph); 2148 2149 softc = (struct ctlfe_lun_softc *)periph->softc; 2150 2151 if (io->io_hdr.io_type == CTL_IO_TASK) { 2152 /* 2153 * Task management commands don't require any further 2154 * communication back to the adapter. Requeue the CCB 2155 * to the adapter, and free the CTL I/O. 2156 */ 2157 xpt_print(ccb->ccb_h.path, "%s: returning task I/O " 2158 "tag %#x seq %#x\n", __func__, 2159 ccb->cin1.tag_id, ccb->cin1.seq_id); 2160 /* 2161 * Send the notify acknowledge down to the SIM, to let it 2162 * know we processed the task management command. 2163 */ 2164 ccb->ccb_h.status = CAM_REQ_INPROG; 2165 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE; 2166 xpt_action(ccb); 2167 ctl_free_io(io); 2168 } else { 2169 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) 2170 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED; 2171 else 2172 io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED; 2173 2174 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h, 2175 periph_links.tqe); 2176 2177 /* 2178 * Reset the timeout for our latest active DMA. 2179 */ 2180 callout_reset(&softc->dma_callout, 2181 CTLFE_DMA_TIMEOUT * hz, 2182 ctlfe_dma_timeout, softc); 2183 /* 2184 * Ask for the CAM transport layer to send us a CCB to do 2185 * the DMA or send status, unless ctlfe_dma_enabled is set 2186 * to 0. 2187 */ 2188 if (ctlfe_dma_enabled != 0) 2189 xpt_schedule(periph, /*priority*/ 1); 2190 } 2191 2192 cam_periph_unlock(periph); 2193} 2194 2195static void 2196ctlfe_dump(void) 2197{ 2198 struct ctlfe_softc *bus_softc; 2199 2200 STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) { 2201 struct ctlfe_lun_softc *lun_softc; 2202 2203 ctlfe_dump_sim(bus_softc->sim); 2204 2205 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links) { 2206 ctlfe_dump_queue(lun_softc); 2207 } 2208 } 2209} 2210