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35 * @defgroup scsi_api_target SCSI Target API
36 * @defgroup scsi_api_initiator SCSI Initiator API
37 * @defgroup cam_api Common Access Method (CAM) API
38 * @defgroup cam_io CAM IO
43 * Provides CAM functionality.
48 #include "ocs_device.h"
50 /* Default IO timeout value for initiators is 30 seconds */
51 #define OCS_CAM_IO_TIMEOUT 30
58 } ocs_dmamap_load_arg_t;
60 static void ocs_action(struct cam_sim *, union ccb *);
61 static void ocs_poll(struct cam_sim *);
63 static ocs_tgt_resource_t *ocs_tgt_resource_get(ocs_fcport *,
64 struct ccb_hdr *, uint32_t *);
65 static int32_t ocs_tgt_resource_abort(struct ocs_softc *, ocs_tgt_resource_t *);
66 static uint32_t ocs_abort_initiator_io(struct ocs_softc *ocs, union ccb *accb);
67 static void ocs_abort_inot(struct ocs_softc *ocs, union ccb *ccb);
68 static void ocs_abort_atio(struct ocs_softc *ocs, union ccb *ccb);
69 static int32_t ocs_target_tmf_cb(ocs_io_t *, ocs_scsi_io_status_e, uint32_t, void *);
70 static int32_t ocs_io_abort_cb(ocs_io_t *, ocs_scsi_io_status_e, uint32_t, void *);
71 static int32_t ocs_task_set_full_or_busy(ocs_io_t *io);
72 static int32_t ocs_initiator_tmf_cb(ocs_io_t *, ocs_scsi_io_status_e,
73 ocs_scsi_cmd_resp_t *, uint32_t, void *);
75 ocs_fcp_change_role(struct ocs_softc *ocs, ocs_fcport *fcp, uint32_t new_role);
77 static void ocs_ldt(void *arg);
78 static void ocs_ldt_task(void *arg, int pending);
79 static void ocs_delete_target(ocs_t *ocs, ocs_fcport *fcp, int tgt);
80 uint32_t ocs_add_new_tgt(ocs_node_t *node, ocs_fcport *fcp);
81 uint32_t ocs_update_tgt(ocs_node_t *node, ocs_fcport *fcp, uint32_t tgt_id);
83 int32_t ocs_tgt_find(ocs_fcport *fcp, ocs_node_t *node);
85 static inline ocs_io_t *ocs_scsi_find_io(struct ocs_softc *ocs, uint32_t tag)
88 return ocs_io_get_instance(ocs, tag);
91 static inline void ocs_target_io_free(ocs_io_t *io)
93 io->tgt_io.state = OCS_CAM_IO_FREE;
95 io->tgt_io.app = NULL;
96 ocs_scsi_io_complete(io);
97 if(io->ocs->io_in_use != 0)
98 atomic_subtract_acq_32(&io->ocs->io_in_use, 1);
102 ocs_attach_port(ocs_t *ocs, int chan)
105 struct cam_sim *sim = NULL;
106 struct cam_path *path = NULL;
107 uint32_t max_io = ocs_scsi_get_property(ocs, OCS_SCSI_MAX_IOS);
108 ocs_fcport *fcp = FCPORT(ocs, chan);
110 if (NULL == (sim = cam_sim_alloc(ocs_action, ocs_poll,
111 device_get_name(ocs->dev), ocs,
112 device_get_unit(ocs->dev), &ocs->sim_lock,
113 max_io, max_io, ocs->devq))) {
114 device_printf(ocs->dev, "Can't allocate SIM\n");
118 mtx_lock(&ocs->sim_lock);
119 if (CAM_SUCCESS != xpt_bus_register(sim, ocs->dev, chan)) {
120 device_printf(ocs->dev, "Can't register bus %d\n", 0);
121 mtx_unlock(&ocs->sim_lock);
122 cam_sim_free(sim, FALSE);
125 mtx_unlock(&ocs->sim_lock);
127 if (CAM_REQ_CMP != xpt_create_path(&path, NULL, cam_sim_path(sim),
128 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD)) {
129 device_printf(ocs->dev, "Can't create path\n");
130 xpt_bus_deregister(cam_sim_path(sim));
131 mtx_unlock(&ocs->sim_lock);
132 cam_sim_free(sim, FALSE);
140 callout_init_mtx(&fcp->ldt, &ocs->sim_lock, 0);
141 TASK_INIT(&fcp->ltask, 1, ocs_ldt_task, fcp);
147 ocs_detach_port(ocs_t *ocs, int32_t chan)
149 ocs_fcport *fcp = NULL;
150 struct cam_sim *sim = NULL;
151 struct cam_path *path = NULL;
152 fcp = FCPORT(ocs, chan);
157 callout_drain(&fcp->ldt);
158 ocs_ldt_task(fcp, 0);
161 mtx_lock(&ocs->sim_lock);
162 ocs_tgt_resource_abort(ocs, &fcp->targ_rsrc_wildcard);
164 xpt_async(AC_LOST_DEVICE, path, NULL);
168 xpt_bus_deregister(cam_sim_path(sim));
170 cam_sim_free(sim, FALSE);
172 mtx_unlock(&ocs->sim_lock);
179 ocs_cam_attach(ocs_t *ocs)
181 struct cam_devq *devq = NULL;
183 uint32_t max_io = ocs_scsi_get_property(ocs, OCS_SCSI_MAX_IOS);
185 if (NULL == (devq = cam_simq_alloc(max_io))) {
186 device_printf(ocs->dev, "Can't allocate SIMQ\n");
192 if (mtx_initialized(&ocs->sim_lock) == 0) {
193 mtx_init(&ocs->sim_lock, "ocs_sim_lock", NULL, MTX_DEF);
196 for (i = 0; i < (ocs->num_vports + 1); i++) {
197 if (ocs_attach_port(ocs, i)) {
198 ocs_log_err(ocs, "Attach port failed for chan: %d\n", i);
203 ocs->io_high_watermark = max_io;
209 ocs_detach_port(ocs, i);
212 cam_simq_free(ocs->devq);
214 if (mtx_initialized(&ocs->sim_lock))
215 mtx_destroy(&ocs->sim_lock);
221 ocs_cam_detach(ocs_t *ocs)
225 for (i = (ocs->num_vports); i >= 0; i--) {
226 ocs_detach_port(ocs, i);
229 cam_simq_free(ocs->devq);
231 if (mtx_initialized(&ocs->sim_lock))
232 mtx_destroy(&ocs->sim_lock);
237 /***************************************************************************
238 * Functions required by SCSI base driver API
242 * @ingroup scsi_api_target
243 * @brief Attach driver to the BSD SCSI layer (a.k.a CAM)
245 * Allocates + initializes CAM related resources and attaches to the CAM
247 * @param ocs the driver instance's software context
249 * @return 0 on success, non-zero otherwise
252 ocs_scsi_tgt_new_device(ocs_t *ocs)
254 ocs->enable_task_set_full = ocs_scsi_get_property(ocs,
255 OCS_SCSI_ENABLE_TASK_SET_FULL);
256 ocs_log_debug(ocs, "task set full processing is %s\n",
257 ocs->enable_task_set_full ? "enabled" : "disabled");
263 * @ingroup scsi_api_target
264 * @brief Tears down target members of ocs structure.
266 * Called by OS code when device is removed.
268 * @param ocs pointer to ocs
270 * @return returns 0 for success, a negative error code value for failure.
273 ocs_scsi_tgt_del_device(ocs_t *ocs)
280 * @ingroup scsi_api_target
281 * @brief accept new domain notification
283 * Called by base drive when new domain is discovered. A target-server
284 * will use this call to prepare for new remote node notifications
285 * arising from ocs_scsi_new_initiator().
287 * The domain context has an element <b>ocs_scsi_tgt_domain_t tgt_domain</b>
288 * which is declared by the target-server code and is used for target-server
291 * This function will only be called if the base-driver has been enabled for
294 * Note that this call is made to target-server backends,
295 * the ocs_scsi_ini_new_domain() function is called to initiator-client backends.
297 * @param domain pointer to domain
299 * @return returns 0 for success, a negative error code value for failure.
302 ocs_scsi_tgt_new_domain(ocs_domain_t *domain)
308 * @ingroup scsi_api_target
309 * @brief accept domain lost notification
311 * Called by base-driver when a domain goes away. A target-server will
312 * use this call to clean up all domain scoped resources.
314 * Note that this call is made to target-server backends,
315 * the ocs_scsi_ini_del_domain() function is called to initiator-client backends.
317 * @param domain pointer to domain
319 * @return returns 0 for success, a negative error code value for failure.
322 ocs_scsi_tgt_del_domain(ocs_domain_t *domain)
327 * @ingroup scsi_api_target
328 * @brief accept new sli port (sport) notification
330 * Called by base drive when new sport is discovered. A target-server
331 * will use this call to prepare for new remote node notifications
332 * arising from ocs_scsi_new_initiator().
334 * The domain context has an element <b>ocs_scsi_tgt_sport_t tgt_sport</b>
335 * which is declared by the target-server code and is used for
336 * target-server private data.
338 * This function will only be called if the base-driver has been enabled for
341 * Note that this call is made to target-server backends,
342 * the ocs_scsi_tgt_new_domain() is called to initiator-client backends.
344 * @param sport pointer to SLI port
346 * @return returns 0 for success, a negative error code value for failure.
349 ocs_scsi_tgt_new_sport(ocs_sport_t *sport)
351 ocs_t *ocs = sport->ocs;
353 if(!sport->is_vport) {
354 sport->tgt_data = FCPORT(ocs, 0);
361 * @ingroup scsi_api_target
362 * @brief accept SLI port gone notification
364 * Called by base-driver when a sport goes away. A target-server will
365 * use this call to clean up all sport scoped resources.
367 * Note that this call is made to target-server backends,
368 * the ocs_scsi_ini_del_sport() is called to initiator-client backends.
370 * @param sport pointer to SLI port
372 * @return returns 0 for success, a negative error code value for failure.
375 ocs_scsi_tgt_del_sport(ocs_sport_t *sport)
381 * @ingroup scsi_api_target
382 * @brief receive notification of a new SCSI initiator node
384 * Sent by base driver to notify a target-server of the presense of a new
385 * remote initiator. The target-server may use this call to prepare for
386 * inbound IO from this node.
388 * The ocs_node_t structure has and elment of type ocs_scsi_tgt_node_t named
389 * tgt_node that is declared and used by a target-server for private
392 * This function is only called if the target capability is enabled in driver.
394 * @param node pointer to new remote initiator node
396 * @return returns 0 for success, a negative error code value for failure.
401 ocs_scsi_new_initiator(ocs_node_t *node)
403 ocs_t *ocs = node->ocs;
404 struct ac_contract ac;
405 struct ac_device_changed *adc;
407 ocs_fcport *fcp = NULL;
409 fcp = node->sport->tgt_data;
411 ocs_log_err(ocs, "FCP is NULL \n");
416 * Update the IO watermark by decrementing it by the
417 * number of IOs reserved for each initiator.
419 atomic_subtract_acq_32(&ocs->io_high_watermark, OCS_RSVD_INI_IO);
421 ac.contract_number = AC_CONTRACT_DEV_CHG;
422 adc = (struct ac_device_changed *) ac.contract_data;
423 adc->wwpn = ocs_node_get_wwpn(node);
424 adc->port = node->rnode.fc_id;
425 adc->target = node->instance_index;
427 xpt_async(AC_CONTRACT, fcp->path, &ac);
433 * @ingroup scsi_api_target
434 * @brief validate new initiator
436 * Sent by base driver to validate a remote initiatiator. The target-server
437 * returns TRUE if this initiator should be accepted.
439 * This function is only called if the target capability is enabled in driver.
441 * @param node pointer to remote initiator node to validate
443 * @return TRUE if initiator should be accepted, FALSE if it should be rejected
449 ocs_scsi_validate_initiator(ocs_node_t *node)
455 * @ingroup scsi_api_target
456 * @brief Delete a SCSI initiator node
458 * Sent by base driver to notify a target-server that a remote initiator
459 * is now gone. The base driver will have terminated all outstanding IOs
460 * and the target-server will receive appropriate completions.
462 * This function is only called if the base driver is enabled for
465 * @param node pointer node being deleted
466 * @param reason Reason why initiator is gone.
468 * @return OCS_SCSI_CALL_COMPLETE to indicate that all work was completed
473 ocs_scsi_del_initiator(ocs_node_t *node, ocs_scsi_del_initiator_reason_e reason)
475 ocs_t *ocs = node->ocs;
477 struct ac_contract ac;
478 struct ac_device_changed *adc;
479 ocs_fcport *fcp = NULL;
481 fcp = node->sport->tgt_data;
483 ocs_log_err(ocs, "FCP is NULL \n");
487 ac.contract_number = AC_CONTRACT_DEV_CHG;
488 adc = (struct ac_device_changed *) ac.contract_data;
489 adc->wwpn = ocs_node_get_wwpn(node);
490 adc->port = node->rnode.fc_id;
491 adc->target = node->instance_index;
493 xpt_async(AC_CONTRACT, fcp->path, &ac);
495 if (reason == OCS_SCSI_INITIATOR_MISSING) {
496 return OCS_SCSI_CALL_COMPLETE;
500 * Update the IO watermark by incrementing it by the
501 * number of IOs reserved for each initiator.
503 atomic_add_acq_32(&ocs->io_high_watermark, OCS_RSVD_INI_IO);
505 return OCS_SCSI_CALL_COMPLETE;
509 * @ingroup scsi_api_target
510 * @brief receive FCP SCSI Command
512 * Called by the base driver when a new SCSI command has been received. The
513 * target-server will process the command, and issue data and/or response phase
514 * requests to the base driver.
516 * The IO context (ocs_io_t) structure has and element of type
517 * ocs_scsi_tgt_io_t named tgt_io that is declared and used by
518 * a target-server for private information.
520 * @param io pointer to IO context
521 * @param lun LUN for this IO
522 * @param cdb pointer to SCSI CDB
523 * @param cdb_len length of CDB in bytes
524 * @param flags command flags
526 * @return returns 0 for success, a negative error code value for failure.
528 int32_t ocs_scsi_recv_cmd(ocs_io_t *io, uint64_t lun, uint8_t *cdb,
529 uint32_t cdb_len, uint32_t flags)
531 ocs_t *ocs = io->ocs;
532 struct ccb_accept_tio *atio = NULL;
533 ocs_node_t *node = io->node;
534 ocs_tgt_resource_t *trsrc = NULL;
536 ocs_fcport *fcp = NULL;
538 fcp = node->sport->tgt_data;
540 ocs_log_err(ocs, "FCP is NULL \n");
544 atomic_add_acq_32(&ocs->io_in_use, 1);
546 /* set target io timeout */
547 io->timeout = ocs->target_io_timer_sec;
549 if (ocs->enable_task_set_full &&
550 (ocs->io_in_use >= ocs->io_high_watermark)) {
551 return ocs_task_set_full_or_busy(io);
553 atomic_store_rel_32(&io->node->tgt_node.busy_sent, FALSE);
556 if ((lun < OCS_MAX_LUN) && fcp->targ_rsrc[lun].enabled) {
557 trsrc = &fcp->targ_rsrc[lun];
558 } else if (fcp->targ_rsrc_wildcard.enabled) {
559 trsrc = &fcp->targ_rsrc_wildcard;
563 atio = (struct ccb_accept_tio *)STAILQ_FIRST(&trsrc->atio);
567 STAILQ_REMOVE_HEAD(&trsrc->atio, sim_links.stqe);
569 atio->ccb_h.status = CAM_CDB_RECVD;
570 atio->ccb_h.target_lun = lun;
573 atio->init_id = node->instance_index;
574 atio->tag_id = io->tag;
575 atio->ccb_h.ccb_io_ptr = io;
577 if (flags & OCS_SCSI_CMD_SIMPLE)
578 atio->tag_action = MSG_SIMPLE_Q_TAG;
579 else if (flags & OCS_SCSI_CMD_HEAD_OF_QUEUE)
580 atio->tag_action = MSG_HEAD_OF_Q_TAG;
581 else if (flags & OCS_SCSI_CMD_ORDERED)
582 atio->tag_action = MSG_ORDERED_Q_TAG;
583 else if (flags & OCS_SCSI_CMD_ACA)
584 atio->tag_action = MSG_ACA_TASK;
586 atio->tag_action = CAM_TAG_ACTION_NONE;
587 atio->priority = (flags & OCS_SCSI_PRIORITY_MASK) >>
588 OCS_SCSI_PRIORITY_SHIFT;
590 atio->cdb_len = cdb_len;
591 ocs_memcpy(atio->cdb_io.cdb_bytes, cdb, cdb_len);
593 io->tgt_io.flags = 0;
594 io->tgt_io.state = OCS_CAM_IO_COMMAND;
595 io->tgt_io.lun = lun;
597 xpt_done((union ccb *)atio);
602 ocs->dev, "%s: no ATIO for LUN %lx (en=%s) OX_ID %#x\n",
603 __func__, (unsigned long)lun,
604 trsrc ? (trsrc->enabled ? "T" : "F") : "X",
605 be16toh(io->init_task_tag));
607 io->tgt_io.state = OCS_CAM_IO_MAX;
608 ocs_target_io_free(io);
615 * @ingroup scsi_api_target
616 * @brief receive FCP SCSI Command with first burst data.
618 * Receive a new FCP SCSI command from the base driver with first burst data.
620 * @param io pointer to IO context
621 * @param lun LUN for this IO
622 * @param cdb pointer to SCSI CDB
623 * @param cdb_len length of CDB in bytes
624 * @param flags command flags
625 * @param first_burst_buffers first burst buffers
626 * @param first_burst_buffer_count The number of bytes received in the first burst
628 * @return returns 0 for success, a negative error code value for failure.
630 int32_t ocs_scsi_recv_cmd_first_burst(ocs_io_t *io, uint64_t lun, uint8_t *cdb,
631 uint32_t cdb_len, uint32_t flags,
632 ocs_dma_t first_burst_buffers[],
633 uint32_t first_burst_buffer_count)
639 * @ingroup scsi_api_target
640 * @brief receive a TMF command IO
642 * Called by the base driver when a SCSI TMF command has been received. The
643 * target-server will process the command, aborting commands as needed, and post
644 * a response using ocs_scsi_send_resp()
646 * The IO context (ocs_io_t) structure has and element of type ocs_scsi_tgt_io_t named
647 * tgt_io that is declared and used by a target-server for private information.
649 * If the target-server walks the nodes active_ios linked list, and starts IO
650 * abort processing, the code <b>must</b> be sure not to abort the IO passed into the
651 * ocs_scsi_recv_tmf() command.
653 * @param tmfio pointer to IO context
654 * @param lun logical unit value
655 * @param cmd command request
656 * @param abortio pointer to IO object to abort for TASK_ABORT (NULL for all other TMF)
659 * @return returns 0 for success, a negative error code value for failure.
661 int32_t ocs_scsi_recv_tmf(ocs_io_t *tmfio, uint64_t lun, ocs_scsi_tmf_cmd_e cmd,
662 ocs_io_t *abortio, uint32_t flags)
664 ocs_t *ocs = tmfio->ocs;
665 ocs_node_t *node = tmfio->node;
666 ocs_tgt_resource_t *trsrc = NULL;
667 struct ccb_immediate_notify *inot = NULL;
669 ocs_fcport *fcp = NULL;
671 fcp = node->sport->tgt_data;
673 ocs_log_err(ocs, "FCP is NULL \n");
677 if ((lun < OCS_MAX_LUN) && fcp->targ_rsrc[lun].enabled) {
678 trsrc = &fcp->targ_rsrc[lun];
679 } else if (fcp->targ_rsrc_wildcard.enabled) {
680 trsrc = &fcp->targ_rsrc_wildcard;
683 device_printf(tmfio->ocs->dev, "%s: io=%p cmd=%#x LU=%lx en=%s\n",
684 __func__, tmfio, cmd, (unsigned long)lun,
685 trsrc ? (trsrc->enabled ? "T" : "F") : "X");
687 inot = (struct ccb_immediate_notify *)STAILQ_FIRST(&trsrc->inot);
692 ocs->dev, "%s: no INOT for LUN %llx (en=%s) OX_ID %#x\n",
693 __func__, (unsigned long long)lun, trsrc ? (trsrc->enabled ? "T" : "F") : "X",
694 be16toh(tmfio->init_task_tag));
697 ocs_scsi_io_complete(abortio);
699 ocs_scsi_io_complete(tmfio);
700 goto ocs_scsi_recv_tmf_out;
703 tmfio->tgt_io.app = abortio;
705 STAILQ_REMOVE_HEAD(&trsrc->inot, sim_links.stqe);
707 inot->tag_id = tmfio->tag;
708 inot->seq_id = tmfio->tag;
710 if ((lun < OCS_MAX_LUN) && fcp->targ_rsrc[lun].enabled) {
711 inot->initiator_id = node->instance_index;
713 inot->initiator_id = CAM_TARGET_WILDCARD;
716 inot->ccb_h.status = CAM_MESSAGE_RECV;
717 inot->ccb_h.target_lun = lun;
720 case OCS_SCSI_TMF_ABORT_TASK:
721 inot->arg = MSG_ABORT_TASK;
722 inot->seq_id = abortio->tag;
723 device_printf(ocs->dev, "%s: ABTS IO.%#x st=%#x\n",
724 __func__, abortio->tag, abortio->tgt_io.state);
725 abortio->tgt_io.flags |= OCS_CAM_IO_F_ABORT_RECV;
726 abortio->tgt_io.flags |= OCS_CAM_IO_F_ABORT_NOTIFY;
728 case OCS_SCSI_TMF_QUERY_TASK_SET:
729 device_printf(ocs->dev,
730 "%s: OCS_SCSI_TMF_QUERY_TASK_SET not supported\n",
732 STAILQ_INSERT_TAIL(&trsrc->inot, &inot->ccb_h, sim_links.stqe);
733 ocs_scsi_io_complete(tmfio);
734 goto ocs_scsi_recv_tmf_out;
736 case OCS_SCSI_TMF_ABORT_TASK_SET:
737 inot->arg = MSG_ABORT_TASK_SET;
739 case OCS_SCSI_TMF_CLEAR_TASK_SET:
740 inot->arg = MSG_CLEAR_TASK_SET;
742 case OCS_SCSI_TMF_QUERY_ASYNCHRONOUS_EVENT:
743 inot->arg = MSG_QUERY_ASYNC_EVENT;
745 case OCS_SCSI_TMF_LOGICAL_UNIT_RESET:
746 inot->arg = MSG_LOGICAL_UNIT_RESET;
748 case OCS_SCSI_TMF_CLEAR_ACA:
749 inot->arg = MSG_CLEAR_ACA;
751 case OCS_SCSI_TMF_TARGET_RESET:
752 inot->arg = MSG_TARGET_RESET;
755 device_printf(ocs->dev, "%s: unsupported TMF %#x\n",
757 STAILQ_INSERT_TAIL(&trsrc->inot, &inot->ccb_h, sim_links.stqe);
758 goto ocs_scsi_recv_tmf_out;
763 xpt_print(inot->ccb_h.path, "%s: func=%#x stat=%#x id=%#x lun=%#x"
764 " flags=%#x tag=%#x seq=%#x ini=%#x arg=%#x\n",
765 __func__, inot->ccb_h.func_code, inot->ccb_h.status,
766 inot->ccb_h.target_id,
767 (unsigned int)inot->ccb_h.target_lun, inot->ccb_h.flags,
768 inot->tag_id, inot->seq_id, inot->initiator_id,
770 xpt_done((union ccb *)inot);
773 abortio->tgt_io.flags |= OCS_CAM_IO_F_ABORT_DEV;
774 rc = ocs_scsi_tgt_abort_io(abortio, ocs_io_abort_cb, tmfio);
777 ocs_scsi_recv_tmf_out:
782 * @ingroup scsi_api_initiator
783 * @brief Initializes any initiator fields on the ocs structure.
785 * Called by OS initialization code when a new device is discovered.
787 * @param ocs pointer to ocs
789 * @return returns 0 for success, a negative error code value for failure.
792 ocs_scsi_ini_new_device(ocs_t *ocs)
799 * @ingroup scsi_api_initiator
800 * @brief Tears down initiator members of ocs structure.
802 * Called by OS code when device is removed.
804 * @param ocs pointer to ocs
806 * @return returns 0 for success, a negative error code value for failure.
810 ocs_scsi_ini_del_device(ocs_t *ocs)
817 * @ingroup scsi_api_initiator
818 * @brief accept new domain notification
820 * Called by base drive when new domain is discovered. An initiator-client
821 * will accept this call to prepare for new remote node notifications
822 * arising from ocs_scsi_new_target().
824 * The domain context has the element <b>ocs_scsi_ini_domain_t ini_domain</b>
825 * which is declared by the initiator-client code and is used for
826 * initiator-client private data.
828 * This function will only be called if the base-driver has been enabled for
829 * initiator capability.
831 * Note that this call is made to initiator-client backends,
832 * the ocs_scsi_tgt_new_domain() function is called to target-server backends.
834 * @param domain pointer to domain
836 * @return returns 0 for success, a negative error code value for failure.
839 ocs_scsi_ini_new_domain(ocs_domain_t *domain)
845 * @ingroup scsi_api_initiator
846 * @brief accept domain lost notification
848 * Called by base-driver when a domain goes away. An initiator-client will
849 * use this call to clean up all domain scoped resources.
851 * This function will only be called if the base-driver has been enabled for
852 * initiator capability.
854 * Note that this call is made to initiator-client backends,
855 * the ocs_scsi_tgt_del_domain() function is called to target-server backends.
857 * @param domain pointer to domain
859 * @return returns 0 for success, a negative error code value for failure.
862 ocs_scsi_ini_del_domain(ocs_domain_t *domain)
867 * @ingroup scsi_api_initiator
868 * @brief accept new sli port notification
870 * Called by base drive when new sli port (sport) is discovered.
871 * A target-server will use this call to prepare for new remote node
872 * notifications arising from ocs_scsi_new_initiator().
874 * This function will only be called if the base-driver has been enabled for
877 * Note that this call is made to target-server backends,
878 * the ocs_scsi_ini_new_sport() function is called to initiator-client backends.
880 * @param sport pointer to sport
882 * @return returns 0 for success, a negative error code value for failure.
885 ocs_scsi_ini_new_sport(ocs_sport_t *sport)
887 ocs_t *ocs = sport->ocs;
888 ocs_fcport *fcp = FCPORT(ocs, 0);
890 if (!sport->is_vport) {
891 sport->tgt_data = fcp;
892 fcp->fc_id = sport->fc_id;
899 * @ingroup scsi_api_initiator
900 * @brief accept sli port gone notification
902 * Called by base-driver when a sport goes away. A target-server will
903 * use this call to clean up all sport scoped resources.
905 * Note that this call is made to target-server backends,
906 * the ocs_scsi_ini_del_sport() function is called to initiator-client backends.
908 * @param sport pointer to SLI port
910 * @return returns 0 for success, a negative error code value for failure.
913 ocs_scsi_ini_del_sport(ocs_sport_t *sport)
915 ocs_t *ocs = sport->ocs;
916 ocs_fcport *fcp = FCPORT(ocs, 0);
918 if (!sport->is_vport) {
924 ocs_scsi_sport_deleted(ocs_sport_t *sport)
926 ocs_t *ocs = sport->ocs;
927 ocs_fcport *fcp = NULL;
929 ocs_xport_stats_t value;
931 if (!sport->is_vport) {
935 fcp = sport->tgt_data;
937 ocs_xport_status(ocs->xport, OCS_XPORT_PORT_STATUS, &value);
939 if (value.value == 0) {
940 ocs_log_debug(ocs, "PORT offline,.. skipping\n");
944 if ((fcp->role != KNOB_ROLE_NONE)) {
945 if(fcp->vport->sport != NULL) {
946 ocs_log_debug(ocs,"sport is not NULL, skipping\n");
950 ocs_sport_vport_alloc(ocs->domain, fcp->vport);
957 ocs_tgt_find(ocs_fcport *fcp, ocs_node_t *node)
959 ocs_fc_target_t *tgt = NULL;
962 for (i = 0; i < OCS_MAX_TARGETS; i++) {
965 if (tgt->state == OCS_TGT_STATE_NONE)
968 if (ocs_node_get_wwpn(node) == tgt->wwpn) {
977 * @ingroup scsi_api_initiator
978 * @brief receive notification of a new SCSI target node
980 * Sent by base driver to notify an initiator-client of the presense of a new
981 * remote target. The initiator-server may use this call to prepare for
982 * inbound IO from this node.
984 * This function is only called if the base driver is enabled for
985 * initiator capability.
987 * @param node pointer to new remote initiator node
995 ocs_update_tgt(ocs_node_t *node, ocs_fcport *fcp, uint32_t tgt_id)
997 ocs_fc_target_t *tgt = NULL;
999 tgt = &fcp->tgt[tgt_id];
1001 tgt->node_id = node->instance_index;
1002 tgt->state = OCS_TGT_STATE_VALID;
1004 tgt->port_id = node->rnode.fc_id;
1005 tgt->wwpn = ocs_node_get_wwpn(node);
1006 tgt->wwnn = ocs_node_get_wwnn(node);
1011 ocs_add_new_tgt(ocs_node_t *node, ocs_fcport *fcp)
1015 struct ocs_softc *ocs = node->ocs;
1016 union ccb *ccb = NULL;
1017 for (i = 0; i < OCS_MAX_TARGETS; i++) {
1018 if (fcp->tgt[i].state == OCS_TGT_STATE_NONE)
1022 if (NULL == (ccb = xpt_alloc_ccb_nowait())) {
1023 device_printf(ocs->dev, "%s: ccb allocation failed\n", __func__);
1027 if (CAM_REQ_CMP != xpt_create_path(&ccb->ccb_h.path, xpt_periph,
1028 cam_sim_path(fcp->sim),
1029 i, CAM_LUN_WILDCARD)) {
1031 ocs->dev, "%s: target path creation failed\n", __func__);
1036 ocs_update_tgt(node, fcp, i);
1042 ocs_scsi_new_target(ocs_node_t *node)
1044 ocs_fcport *fcp = NULL;
1047 fcp = node->sport->tgt_data;
1049 printf("%s:FCP is NULL \n", __func__);
1053 i = ocs_tgt_find(fcp, node);
1056 ocs_add_new_tgt(node, fcp);
1060 ocs_update_tgt(node, fcp, i);
1065 ocs_delete_target(ocs_t *ocs, ocs_fcport *fcp, int tgt)
1067 struct cam_path *cpath = NULL;
1070 device_printf(ocs->dev, "%s: calling with NULL sim\n", __func__);
1074 if (CAM_REQ_CMP == xpt_create_path(&cpath, NULL, cam_sim_path(fcp->sim),
1075 tgt, CAM_LUN_WILDCARD)) {
1076 xpt_async(AC_LOST_DEVICE, cpath, NULL);
1078 xpt_free_path(cpath);
1083 * Device Lost Timer Function- when we have decided that a device was lost,
1084 * we wait a specific period of time prior to telling the OS about lost device.
1086 * This timer function gets activated when the device was lost.
1087 * This function fires once a second and then scans the port database
1088 * for devices that are marked dead but still have a virtual target assigned.
1089 * We decrement a counter for that port database entry, and when it hits zero,
1090 * we tell the OS the device was lost. Timer will be stopped when the device
1091 * comes back active or removed from the OS.
1096 ocs_fcport *fcp = arg;
1097 taskqueue_enqueue(taskqueue_thread, &fcp->ltask);
1101 ocs_ldt_task(void *arg, int pending)
1103 ocs_fcport *fcp = arg;
1104 ocs_t *ocs = fcp->ocs;
1105 int i, more_to_do = 0;
1106 ocs_fc_target_t *tgt = NULL;
1108 for (i = 0; i < OCS_MAX_TARGETS; i++) {
1111 if (tgt->state != OCS_TGT_STATE_LOST) {
1115 if ((tgt->gone_timer != 0) && (ocs->attached)){
1116 tgt->gone_timer -= 1;
1121 if (tgt->is_target) {
1123 ocs_delete_target(ocs, fcp, i);
1126 tgt->state = OCS_TGT_STATE_NONE;
1130 callout_reset(&fcp->ldt, hz, ocs_ldt, fcp);
1132 callout_deactivate(&fcp->ldt);
1138 * @ingroup scsi_api_initiator
1139 * @brief Delete a SCSI target node
1141 * Sent by base driver to notify a initiator-client that a remote target
1142 * is now gone. The base driver will have terminated all outstanding IOs
1143 * and the initiator-client will receive appropriate completions.
1145 * The ocs_node_t structure has and elment of type ocs_scsi_ini_node_t named
1146 * ini_node that is declared and used by a target-server for private
1149 * This function is only called if the base driver is enabled for
1150 * initiator capability.
1152 * @param node pointer node being deleted
1153 * @param reason reason for deleting the target
1155 * @return Returns OCS_SCSI_CALL_ASYNC if target delete is queued for async
1156 * completion and OCS_SCSI_CALL_COMPLETE if call completed or error.
1161 ocs_scsi_del_target(ocs_node_t *node, ocs_scsi_del_target_reason_e reason)
1163 struct ocs_softc *ocs = node->ocs;
1164 ocs_fcport *fcp = NULL;
1165 ocs_fc_target_t *tgt = NULL;
1169 ocs_log_err(ocs,"OCS is NULL \n");
1173 fcp = node->sport->tgt_data;
1175 ocs_log_err(ocs,"FCP is NULL \n");
1179 tgt_id = ocs_tgt_find(fcp, node);
1181 ocs_log_err(ocs,"target is invalid\n");
1185 tgt = &fcp->tgt[tgt_id];
1187 // IF in shutdown delete target.
1188 if(!ocs->attached) {
1189 ocs_delete_target(ocs, fcp, tgt_id);
1191 tgt->state = OCS_TGT_STATE_LOST;
1192 tgt->gone_timer = 30;
1193 if (!callout_active(&fcp->ldt)) {
1194 callout_reset(&fcp->ldt, hz, ocs_ldt, fcp);
1202 * @brief Initialize SCSI IO
1204 * Initialize SCSI IO, this function is called once per IO during IO pool
1205 * allocation so that the target server may initialize any of its own private
1208 * @param io pointer to SCSI IO object
1210 * @return returns 0 for success, a negative error code value for failure.
1213 ocs_scsi_tgt_io_init(ocs_io_t *io)
1219 * @brief Uninitialize SCSI IO
1221 * Uninitialize target server private data in a SCSI io object
1223 * @param io pointer to SCSI IO object
1225 * @return returns 0 for success, a negative error code value for failure.
1228 ocs_scsi_tgt_io_exit(ocs_io_t *io)
1234 * @brief Initialize SCSI IO
1236 * Initialize SCSI IO, this function is called once per IO during IO pool
1237 * allocation so that the initiator client may initialize any of its own private
1240 * @param io pointer to SCSI IO object
1242 * @return returns 0 for success, a negative error code value for failure.
1245 ocs_scsi_ini_io_init(ocs_io_t *io)
1251 * @brief Uninitialize SCSI IO
1253 * Uninitialize initiator client private data in a SCSI io object
1255 * @param io pointer to SCSI IO object
1257 * @return returns 0 for success, a negative error code value for failure.
1260 ocs_scsi_ini_io_exit(ocs_io_t *io)
1265 * End of functions required by SCSI base driver API
1266 ***************************************************************************/
1268 static __inline void
1269 ocs_set_ccb_status(union ccb *ccb, cam_status status)
1271 ccb->ccb_h.status &= ~CAM_STATUS_MASK;
1272 ccb->ccb_h.status |= status;
1276 ocs_task_set_full_or_busy_cb(ocs_io_t *io, ocs_scsi_io_status_e scsi_status,
1277 uint32_t flags, void *arg)
1280 ocs_target_io_free(io);
1286 * @brief send SCSI task set full or busy status
1288 * A SCSI task set full or busy response is sent depending on whether
1289 * another IO is already active on the LUN.
1291 * @param io pointer to IO context
1293 * @return returns 0 for success, a negative error code value for failure.
1297 ocs_task_set_full_or_busy(ocs_io_t *io)
1299 ocs_scsi_cmd_resp_t rsp = { 0 };
1300 ocs_t *ocs = io->ocs;
1303 * If there is another command for the LUN, then send task set full,
1304 * if this is the first one, then send the busy status.
1306 * if 'busy sent' is FALSE, set it to TRUE and send BUSY
1307 * otherwise send FULL
1309 if (atomic_cmpset_acq_32(&io->node->tgt_node.busy_sent, FALSE, TRUE)) {
1310 rsp.scsi_status = SCSI_STATUS_BUSY; /* Busy */
1311 printf("%s: busy [%s] tag=%x iiu=%d ihw=%d\n", __func__,
1312 io->node->display_name, io->tag,
1313 io->ocs->io_in_use, io->ocs->io_high_watermark);
1315 rsp.scsi_status = SCSI_STATUS_TASK_SET_FULL; /* Task set full */
1316 printf("%s: full tag=%x iiu=%d\n", __func__, io->tag,
1317 io->ocs->io_in_use);
1320 /* Log a message here indicating a busy or task set full state */
1321 if (OCS_LOG_ENABLE_Q_FULL_BUSY_MSG(ocs)) {
1322 /* Log Task Set Full */
1323 if (rsp.scsi_status == SCSI_STATUS_TASK_SET_FULL) {
1324 /* Task Set Full Message */
1325 ocs_log_info(ocs, "OCS CAM TASK SET FULL. Tasks >= %d\n",
1326 ocs->io_high_watermark);
1328 else if (rsp.scsi_status == SCSI_STATUS_BUSY) {
1329 /* Log Busy Message */
1330 ocs_log_info(ocs, "OCS CAM SCSI BUSY\n");
1334 /* Send the response */
1336 ocs_scsi_send_resp(io, 0, &rsp, ocs_task_set_full_or_busy_cb, NULL);
1341 * @brief Process target IO completions
1344 * @param scsi_status did the IO complete successfully
1346 * @param arg application specific pointer provided in the call to ocs_target_io()
1350 static int32_t ocs_scsi_target_io_cb(ocs_io_t *io,
1351 ocs_scsi_io_status_e scsi_status,
1352 uint32_t flags, void *arg)
1354 union ccb *ccb = arg;
1355 struct ccb_scsiio *csio = &ccb->csio;
1356 struct ocs_softc *ocs = csio->ccb_h.ccb_ocs_ptr;
1357 uint32_t cam_dir = ccb->ccb_h.flags & CAM_DIR_MASK;
1358 uint32_t io_is_done =
1359 (ccb->ccb_h.flags & CAM_SEND_STATUS) == CAM_SEND_STATUS;
1361 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
1363 if (CAM_DIR_NONE != cam_dir) {
1364 bus_dmasync_op_t op;
1366 if (CAM_DIR_IN == cam_dir) {
1367 op = BUS_DMASYNC_POSTREAD;
1369 op = BUS_DMASYNC_POSTWRITE;
1371 /* Synchronize the DMA memory with the CPU and free the mapping */
1372 bus_dmamap_sync(ocs->buf_dmat, io->tgt_io.dmap, op);
1373 if (io->tgt_io.flags & OCS_CAM_IO_F_DMAPPED) {
1374 bus_dmamap_unload(ocs->buf_dmat, io->tgt_io.dmap);
1378 if (io->tgt_io.sendresp) {
1379 io->tgt_io.sendresp = 0;
1380 ocs_scsi_cmd_resp_t resp = { 0 };
1381 io->tgt_io.state = OCS_CAM_IO_RESP;
1382 resp.scsi_status = scsi_status;
1383 if (ccb->ccb_h.flags & CAM_SEND_SENSE) {
1384 resp.sense_data = (uint8_t *)&csio->sense_data;
1385 resp.sense_data_length = csio->sense_len;
1387 resp.residual = io->exp_xfer_len - io->transferred;
1389 return ocs_scsi_send_resp(io, 0, &resp, ocs_scsi_target_io_cb, ccb);
1392 switch (scsi_status) {
1393 case OCS_SCSI_STATUS_GOOD:
1394 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
1396 case OCS_SCSI_STATUS_ABORTED:
1397 ocs_set_ccb_status(ccb, CAM_REQ_ABORTED);
1400 ocs_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
1404 if ((io->tgt_io.flags & OCS_CAM_IO_F_ABORT_NOTIFY) == 0) {
1405 ocs_target_io_free(io);
1408 io->tgt_io.state = OCS_CAM_IO_DATA_DONE;
1409 /*device_printf(ocs->dev, "%s: CTIO state=%d tag=%#x\n",
1410 __func__, io->tgt_io.state, io->tag);*/
1419 * @note 1. Since the CCB is assigned to the ocs_io_t on an XPT_CONT_TARGET_IO
1420 * action, if an initiator aborts a command prior to the SIM receiving
1421 * a CTIO, the IO's CCB will be NULL.
1424 ocs_io_abort_cb(ocs_io_t *io, ocs_scsi_io_status_e scsi_status, uint32_t flags, void *arg)
1426 struct ocs_softc *ocs = NULL;
1427 ocs_io_t *tmfio = arg;
1428 ocs_scsi_tmf_resp_e tmf_resp = OCS_SCSI_TMF_FUNCTION_COMPLETE;
1433 io->tgt_io.flags &= ~OCS_CAM_IO_F_ABORT_DEV;
1435 /* A good status indicates the IO was aborted and will be completed in
1436 * the IO's completion handler. Handle the other cases here. */
1437 switch (scsi_status) {
1438 case OCS_SCSI_STATUS_GOOD:
1440 case OCS_SCSI_STATUS_NO_IO:
1443 device_printf(ocs->dev, "%s: unhandled status %d\n",
1444 __func__, scsi_status);
1445 tmf_resp = OCS_SCSI_TMF_FUNCTION_REJECTED;
1449 ocs_scsi_send_tmf_resp(tmfio, tmf_resp, NULL, ocs_target_tmf_cb, NULL);
1456 * @brief Process initiator IO completions
1459 * @param scsi_status did the IO complete successfully
1460 * @param rsp pointer to response buffer
1462 * @param arg application specific pointer provided in the call to ocs_target_io()
1466 static int32_t ocs_scsi_initiator_io_cb(ocs_io_t *io,
1467 ocs_scsi_io_status_e scsi_status,
1468 ocs_scsi_cmd_resp_t *rsp,
1469 uint32_t flags, void *arg)
1471 union ccb *ccb = arg;
1472 struct ccb_scsiio *csio = &ccb->csio;
1473 struct ocs_softc *ocs = csio->ccb_h.ccb_ocs_ptr;
1474 uint32_t cam_dir = ccb->ccb_h.flags & CAM_DIR_MASK;
1475 cam_status ccb_status= CAM_REQ_CMP_ERR;
1477 if (CAM_DIR_NONE != cam_dir) {
1478 bus_dmasync_op_t op;
1480 if (CAM_DIR_IN == cam_dir) {
1481 op = BUS_DMASYNC_POSTREAD;
1483 op = BUS_DMASYNC_POSTWRITE;
1485 /* Synchronize the DMA memory with the CPU and free the mapping */
1486 bus_dmamap_sync(ocs->buf_dmat, io->tgt_io.dmap, op);
1487 if (io->tgt_io.flags & OCS_CAM_IO_F_DMAPPED) {
1488 bus_dmamap_unload(ocs->buf_dmat, io->tgt_io.dmap);
1492 if (scsi_status == OCS_SCSI_STATUS_CHECK_RESPONSE) {
1493 csio->scsi_status = rsp->scsi_status;
1494 if (SCSI_STATUS_OK != rsp->scsi_status) {
1495 ccb_status = CAM_SCSI_STATUS_ERROR;
1498 csio->resid = rsp->residual;
1499 if (rsp->residual > 0) {
1500 uint32_t length = rsp->response_wire_length;
1502 if (csio->dxfer_len == (length + csio->resid)) {
1503 ccb_status = CAM_REQ_CMP;
1505 } else if (rsp->residual < 0) {
1506 ccb_status = CAM_DATA_RUN_ERR;
1509 if ((rsp->sense_data_length) &&
1510 !(ccb->ccb_h.flags & (CAM_SENSE_PHYS | CAM_SENSE_PTR))) {
1511 uint32_t sense_len = 0;
1513 ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
1514 if (rsp->sense_data_length < csio->sense_len) {
1516 csio->sense_len - rsp->sense_data_length;
1517 sense_len = rsp->sense_data_length;
1519 csio->sense_resid = 0;
1520 sense_len = csio->sense_len;
1522 ocs_memcpy(&csio->sense_data, rsp->sense_data, sense_len);
1524 } else if (scsi_status != OCS_SCSI_STATUS_GOOD) {
1525 ccb_status = CAM_REQ_CMP_ERR;
1526 ocs_set_ccb_status(ccb, ccb_status);
1527 csio->ccb_h.status |= CAM_DEV_QFRZN;
1528 xpt_freeze_devq(csio->ccb_h.path, 1);
1531 ccb_status = CAM_REQ_CMP;
1534 ocs_set_ccb_status(ccb, ccb_status);
1536 ocs_scsi_io_free(io);
1538 csio->ccb_h.ccb_io_ptr = NULL;
1539 csio->ccb_h.ccb_ocs_ptr = NULL;
1540 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
1548 * @brief Load scatter-gather list entries into an IO
1550 * This routine relies on the driver instance's software context pointer and
1551 * the IO object pointer having been already assigned to hooks in the CCB.
1552 * Although the routine does not return success/fail, callers can look at the
1553 * n_sge member to determine if the mapping failed (0 on failure).
1555 * @param arg pointer to the CAM ccb for this IO
1556 * @param seg DMA address/length pairs
1557 * @param nseg number of DMA address/length pairs
1558 * @param error any errors while mapping the IO
1561 ocs_scsi_dmamap_load(void *arg, bus_dma_segment_t *seg, int nseg, int error)
1563 ocs_dmamap_load_arg_t *sglarg = (ocs_dmamap_load_arg_t*) arg;
1566 printf("%s: seg=%p nseg=%d error=%d\n",
1567 __func__, seg, nseg, error);
1573 if ((sglarg->sgl_count + nseg) > sglarg->sgl_max) {
1574 printf("%s: sgl_count=%d nseg=%d max=%d\n", __func__,
1575 sglarg->sgl_count, nseg, sglarg->sgl_max);
1580 for (i = 0, c = sglarg->sgl_count; i < nseg; i++, c++) {
1581 sglarg->sgl[c].addr = seg[i].ds_addr;
1582 sglarg->sgl[c].len = seg[i].ds_len;
1585 sglarg->sgl_count = c;
1592 * @brief Build a scatter-gather list from a CAM CCB
1594 * @param ocs the driver instance's software context
1595 * @param ccb pointer to the CCB
1596 * @param io pointer to the previously allocated IO object
1597 * @param sgl pointer to SGL
1598 * @param sgl_max number of entries in sgl
1600 * @return 0 on success, non-zero otherwise
1603 ocs_build_scsi_sgl(struct ocs_softc *ocs, union ccb *ccb, ocs_io_t *io,
1604 ocs_scsi_sgl_t *sgl, uint32_t sgl_max)
1606 ocs_dmamap_load_arg_t dmaarg;
1609 if (!ocs || !ccb || !io || !sgl) {
1610 printf("%s: bad param o=%p c=%p i=%p s=%p\n", __func__,
1615 io->tgt_io.flags &= ~OCS_CAM_IO_F_DMAPPED;
1618 dmaarg.sgl_count = 0;
1619 dmaarg.sgl_max = sgl_max;
1622 err = bus_dmamap_load_ccb(ocs->buf_dmat, io->tgt_io.dmap, ccb,
1623 ocs_scsi_dmamap_load, &dmaarg, 0);
1625 if (err || dmaarg.rc) {
1627 ocs->dev, "%s: bus_dmamap_load_ccb error (%d %d)\n",
1628 __func__, err, dmaarg.rc);
1632 io->tgt_io.flags |= OCS_CAM_IO_F_DMAPPED;
1633 return dmaarg.sgl_count;
1638 * @brief Send a target IO
1640 * @param ocs the driver instance's software context
1641 * @param ccb pointer to the CCB
1643 * @return 0 on success, non-zero otherwise
1646 ocs_target_io(struct ocs_softc *ocs, union ccb *ccb)
1648 struct ccb_scsiio *csio = &ccb->csio;
1649 ocs_io_t *io = NULL;
1650 uint32_t cam_dir = ccb->ccb_h.flags & CAM_DIR_MASK;
1651 bool sendstatus = ccb->ccb_h.flags & CAM_SEND_STATUS;
1652 uint32_t xferlen = csio->dxfer_len;
1655 io = ocs_scsi_find_io(ocs, csio->tag_id);
1657 ocs_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
1658 panic("bad tag value");
1662 /* Received an ABORT TASK for this IO */
1663 if (io->tgt_io.flags & OCS_CAM_IO_F_ABORT_RECV) {
1664 /*device_printf(ocs->dev,
1665 "%s: XPT_CONT_TARGET_IO state=%d tag=%#x xid=%#x flags=%#x\n",
1666 __func__, io->tgt_io.state, io->tag, io->init_task_tag,
1667 io->tgt_io.flags);*/
1668 io->tgt_io.flags |= OCS_CAM_IO_F_ABORT_CAM;
1670 if (ccb->ccb_h.flags & CAM_SEND_STATUS) {
1671 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
1672 ocs_target_io_free(io);
1676 ocs_set_ccb_status(ccb, CAM_REQ_ABORTED);
1681 io->tgt_io.app = ccb;
1683 ocs_set_ccb_status(ccb, CAM_REQ_INPROG);
1684 ccb->ccb_h.status |= CAM_SIM_QUEUED;
1686 csio->ccb_h.ccb_ocs_ptr = ocs;
1687 csio->ccb_h.ccb_io_ptr = io;
1689 if ((sendstatus && (xferlen == 0))) {
1690 ocs_scsi_cmd_resp_t resp = { 0 };
1692 ocs_assert(ccb->ccb_h.flags & CAM_SEND_STATUS, -1);
1694 io->tgt_io.state = OCS_CAM_IO_RESP;
1696 resp.scsi_status = csio->scsi_status;
1698 if (ccb->ccb_h.flags & CAM_SEND_SENSE) {
1699 resp.sense_data = (uint8_t *)&csio->sense_data;
1700 resp.sense_data_length = csio->sense_len;
1703 resp.residual = io->exp_xfer_len - io->transferred;
1704 rc = ocs_scsi_send_resp(io, 0, &resp, ocs_scsi_target_io_cb, ccb);
1706 } else if (xferlen != 0) {
1707 ocs_scsi_sgl_t sgl[OCS_FC_MAX_SGL];
1708 int32_t sgl_count = 0;
1710 io->tgt_io.state = OCS_CAM_IO_DATA;
1713 io->tgt_io.sendresp = 1;
1715 sgl_count = ocs_build_scsi_sgl(ocs, ccb, io, sgl, ARRAY_SIZE(sgl));
1716 if (sgl_count > 0) {
1717 if (cam_dir == CAM_DIR_IN) {
1718 rc = ocs_scsi_send_rd_data(io, 0, NULL, sgl,
1719 sgl_count, csio->dxfer_len,
1720 ocs_scsi_target_io_cb, ccb);
1721 } else if (cam_dir == CAM_DIR_OUT) {
1722 rc = ocs_scsi_recv_wr_data(io, 0, NULL, sgl,
1723 sgl_count, csio->dxfer_len,
1724 ocs_scsi_target_io_cb, ccb);
1726 device_printf(ocs->dev, "%s:"
1727 " unknown CAM direction %#x\n",
1729 ocs_set_ccb_status(ccb, CAM_REQ_INVALID);
1733 device_printf(ocs->dev, "%s: building SGL failed\n",
1735 ocs_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
1739 device_printf(ocs->dev, "%s: Wrong value xfer and sendstatus"
1740 " are 0 \n", __func__);
1741 ocs_set_ccb_status(ccb, CAM_REQ_INVALID);
1746 ocs_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
1747 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
1748 io->tgt_io.state = OCS_CAM_IO_DATA_DONE;
1749 device_printf(ocs->dev, "%s: CTIO state=%d tag=%#x\n",
1750 __func__, io->tgt_io.state, io->tag);
1751 if ((sendstatus && (xferlen == 0))) {
1752 ocs_target_io_free(io);
1760 ocs_target_tmf_cb(ocs_io_t *io, ocs_scsi_io_status_e scsi_status, uint32_t flags,
1764 /*device_printf(io->ocs->dev, "%s: tag=%x io=%p s=%#x\n",
1765 __func__, io->tag, io, scsi_status);*/
1766 ocs_scsi_io_complete(io);
1773 * @brief Send an initiator IO
1775 * @param ocs the driver instance's software context
1776 * @param ccb pointer to the CCB
1778 * @return 0 on success, non-zero otherwise
1781 ocs_initiator_io(struct ocs_softc *ocs, union ccb *ccb)
1784 struct ccb_scsiio *csio = &ccb->csio;
1785 struct ccb_hdr *ccb_h = &csio->ccb_h;
1786 ocs_node_t *node = NULL;
1787 ocs_io_t *io = NULL;
1788 ocs_scsi_sgl_t sgl[OCS_FC_MAX_SGL];
1789 int32_t flags, sgl_count;
1792 fcp = FCPORT(ocs, cam_sim_bus(xpt_path_sim((ccb)->ccb_h.path)));
1794 if (fcp->tgt[ccb_h->target_id].state == OCS_TGT_STATE_LOST) {
1795 device_printf(ocs->dev, "%s: device LOST %d\n", __func__,
1797 return CAM_REQUEUE_REQ;
1800 if (fcp->tgt[ccb_h->target_id].state == OCS_TGT_STATE_NONE) {
1801 device_printf(ocs->dev, "%s: device not ready %d\n", __func__,
1803 return CAM_SEL_TIMEOUT;
1806 node = ocs_node_get_instance(ocs, fcp->tgt[ccb_h->target_id].node_id);
1808 device_printf(ocs->dev, "%s: no device %d\n", __func__,
1810 return CAM_SEL_TIMEOUT;
1814 device_printf(ocs->dev, "%s: not target device %d\n", __func__,
1816 return CAM_SEL_TIMEOUT;
1819 io = ocs_scsi_io_alloc(node, OCS_SCSI_IO_ROLE_ORIGINATOR);
1821 device_printf(ocs->dev, "%s: unable to alloc IO\n", __func__);
1825 /* eventhough this is INI, use target structure as ocs_build_scsi_sgl
1826 * only references the tgt_io part of an ocs_io_t */
1827 io->tgt_io.app = ccb;
1829 csio->ccb_h.ccb_ocs_ptr = ocs;
1830 csio->ccb_h.ccb_io_ptr = io;
1832 sgl_count = ocs_build_scsi_sgl(ocs, ccb, io, sgl, ARRAY_SIZE(sgl));
1833 if (sgl_count < 0) {
1834 ocs_scsi_io_free(io);
1835 device_printf(ocs->dev, "%s: building SGL failed\n", __func__);
1839 if (ccb->ccb_h.timeout == CAM_TIME_INFINITY) {
1841 } else if (ccb->ccb_h.timeout == CAM_TIME_DEFAULT) {
1842 io->timeout = OCS_CAM_IO_TIMEOUT;
1844 io->timeout = ccb->ccb_h.timeout;
1847 switch (csio->tag_action) {
1848 case MSG_HEAD_OF_Q_TAG:
1849 flags = OCS_SCSI_CMD_HEAD_OF_QUEUE;
1851 case MSG_ORDERED_Q_TAG:
1852 flags = OCS_SCSI_CMD_ORDERED;
1855 flags = OCS_SCSI_CMD_ACA;
1857 case CAM_TAG_ACTION_NONE:
1858 case MSG_SIMPLE_Q_TAG:
1860 flags = OCS_SCSI_CMD_SIMPLE;
1863 flags |= (csio->priority << OCS_SCSI_PRIORITY_SHIFT) &
1864 OCS_SCSI_PRIORITY_MASK;
1866 switch (ccb->ccb_h.flags & CAM_DIR_MASK) {
1868 rc = ocs_scsi_send_nodata_io(node, io, ccb_h->target_lun,
1869 ccb->ccb_h.flags & CAM_CDB_POINTER ?
1870 csio->cdb_io.cdb_ptr: csio->cdb_io.cdb_bytes,
1872 ocs_scsi_initiator_io_cb, ccb, flags);
1875 rc = ocs_scsi_send_rd_io(node, io, ccb_h->target_lun,
1876 ccb->ccb_h.flags & CAM_CDB_POINTER ?
1877 csio->cdb_io.cdb_ptr: csio->cdb_io.cdb_bytes,
1880 sgl, sgl_count, csio->dxfer_len,
1881 ocs_scsi_initiator_io_cb, ccb, flags);
1884 rc = ocs_scsi_send_wr_io(node, io, ccb_h->target_lun,
1885 ccb->ccb_h.flags & CAM_CDB_POINTER ?
1886 csio->cdb_io.cdb_ptr: csio->cdb_io.cdb_bytes,
1889 sgl, sgl_count, csio->dxfer_len,
1890 ocs_scsi_initiator_io_cb, ccb, flags);
1893 panic("%s invalid data direction %08x\n", __func__,
1902 ocs_fcp_change_role(struct ocs_softc *ocs, ocs_fcport *fcp, uint32_t new_role)
1905 uint32_t rc = 0, was = 0, i = 0;
1906 ocs_vport_spec_t *vport = fcp->vport;
1908 for (was = 0, i = 0; i < (ocs->num_vports + 1); i++) {
1909 if (FCPORT(ocs, i)->role != KNOB_ROLE_NONE)
1914 if ((was == 0) || (vport == NULL)) {
1915 fcp->role = new_role;
1916 if (vport == NULL) {
1917 ocs->enable_ini = (new_role & KNOB_ROLE_INITIATOR)? 1:0;
1918 ocs->enable_tgt = (new_role & KNOB_ROLE_TARGET)? 1:0;
1920 vport->enable_ini = (new_role & KNOB_ROLE_INITIATOR)? 1:0;
1921 vport->enable_tgt = (new_role & KNOB_ROLE_TARGET)? 1:0;
1924 rc = ocs_xport_control(ocs->xport, OCS_XPORT_PORT_OFFLINE);
1926 ocs_log_debug(ocs, "port offline failed : %d\n", rc);
1929 rc = ocs_xport_control(ocs->xport, OCS_XPORT_PORT_ONLINE);
1931 ocs_log_debug(ocs, "port online failed : %d\n", rc);
1937 if ((fcp->role != KNOB_ROLE_NONE)){
1938 fcp->role = new_role;
1939 vport->enable_ini = (new_role & KNOB_ROLE_INITIATOR)? 1:0;
1940 vport->enable_tgt = (new_role & KNOB_ROLE_TARGET)? 1:0;
1941 /* New Sport will be created in sport deleted cb */
1942 return ocs_sport_vport_del(ocs, ocs->domain, vport->wwpn, vport->wwnn);
1945 fcp->role = new_role;
1947 vport->enable_ini = (new_role & KNOB_ROLE_INITIATOR)? 1:0;
1948 vport->enable_tgt = (new_role & KNOB_ROLE_TARGET)? 1:0;
1950 if (fcp->role != KNOB_ROLE_NONE) {
1951 return ocs_sport_vport_alloc(ocs->domain, vport);
1959 * @brief Process CAM actions
1961 * The driver supplies this routine to the CAM during intialization and
1962 * is the main entry point for processing CAM Control Blocks (CCB)
1964 * @param sim pointer to the SCSI Interface Module
1965 * @param ccb CAM control block
1968 * - populate path inquiry data via info retrieved from SLI port
1971 ocs_action(struct cam_sim *sim, union ccb *ccb)
1973 struct ocs_softc *ocs = (struct ocs_softc *)cam_sim_softc(sim);
1974 struct ccb_hdr *ccb_h = &ccb->ccb_h;
1977 bus = cam_sim_bus(sim);
1979 switch (ccb_h->func_code) {
1982 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0) {
1983 if ((ccb->ccb_h.flags & CAM_CDB_PHYS) != 0) {
1984 ccb->ccb_h.status = CAM_REQ_INVALID;
1990 rc = ocs_initiator_io(ocs, ccb);
1992 ocs_set_ccb_status(ccb, CAM_REQ_INPROG | CAM_SIM_QUEUED);
1995 if (rc == CAM_REQUEUE_REQ) {
1996 cam_freeze_devq(ccb->ccb_h.path);
1997 cam_release_devq(ccb->ccb_h.path, RELSIM_RELEASE_AFTER_TIMEOUT, 0, 100, 0);
1998 ccb->ccb_h.status = CAM_REQUEUE_REQ;
2003 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
2005 ocs_set_ccb_status(ccb, rc);
2007 ocs_set_ccb_status(ccb, CAM_SEL_TIMEOUT);
2014 struct ccb_pathinq *cpi = &ccb->cpi;
2015 struct ccb_pathinq_settings_fc *fc = &cpi->xport_specific.fc;
2016 ocs_fcport *fcp = FCPORT(ocs, bus);
2019 ocs_xport_stats_t value;
2021 cpi->version_num = 1;
2023 cpi->protocol = PROTO_SCSI;
2024 cpi->protocol_version = SCSI_REV_SPC;
2026 if (ocs->ocs_xport == OCS_XPORT_FC) {
2027 cpi->transport = XPORT_FC;
2029 cpi->transport = XPORT_UNKNOWN;
2032 cpi->transport_version = 0;
2034 /* Set the transport parameters of the SIM */
2035 ocs_xport_status(ocs->xport, OCS_XPORT_LINK_SPEED, &value);
2036 fc->bitrate = value.value * 1000; /* speed in Mbps */
2038 wwn = *((uint64_t *)ocs_scsi_get_property_ptr(ocs, OCS_SCSI_WWPN));
2039 fc->wwpn = be64toh(wwn);
2041 wwn = *((uint64_t *)ocs_scsi_get_property_ptr(ocs, OCS_SCSI_WWNN));
2042 fc->wwnn = be64toh(wwn);
2044 fc->port = fcp->fc_id;
2046 if (ocs->config_tgt) {
2048 PIT_PROCESSOR | PIT_DISCONNECT | PIT_TERM_IO;
2051 cpi->hba_misc = PIM_NOBUSRESET | PIM_UNMAPPED;
2052 cpi->hba_misc |= PIM_EXTLUNS | PIM_NOSCAN;
2054 cpi->hba_inquiry = PI_TAG_ABLE;
2055 cpi->max_target = OCS_MAX_TARGETS;
2056 cpi->initiator_id = ocs->max_remote_nodes + 1;
2058 if (!ocs->enable_ini) {
2059 cpi->hba_misc |= PIM_NOINITIATOR;
2062 cpi->max_lun = OCS_MAX_LUN;
2063 cpi->bus_id = cam_sim_bus(sim);
2065 /* Need to supply a base transfer speed prior to linking up
2066 * Worst case, this would be FC 1Gbps */
2067 cpi->base_transfer_speed = 1 * 1000 * 1000;
2069 /* Calculate the max IO supported
2070 * Worst case would be an OS page per SGL entry */
2071 cpi->maxio = PAGE_SIZE *
2072 (ocs_scsi_get_property(ocs, OCS_SCSI_MAX_SGL) - 1);
2074 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2075 strncpy(cpi->hba_vid, "Emulex", HBA_IDLEN);
2076 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
2077 cpi->unit_number = cam_sim_unit(sim);
2079 cpi->ccb_h.status = CAM_REQ_CMP;
2083 case XPT_GET_TRAN_SETTINGS:
2085 struct ccb_trans_settings *cts = &ccb->cts;
2086 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
2087 struct ccb_trans_settings_fc *fc = &cts->xport_specific.fc;
2088 ocs_xport_stats_t value;
2089 ocs_fcport *fcp = FCPORT(ocs, bus);
2090 ocs_fc_target_t *tgt = NULL;
2092 if (ocs->ocs_xport != OCS_XPORT_FC) {
2093 ocs_set_ccb_status(ccb, CAM_REQ_INVALID);
2098 if (cts->ccb_h.target_id > OCS_MAX_TARGETS) {
2099 ocs_set_ccb_status(ccb, CAM_DEV_NOT_THERE);
2104 tgt = &fcp->tgt[cts->ccb_h.target_id];
2105 if (tgt->state == OCS_TGT_STATE_NONE) {
2106 ocs_set_ccb_status(ccb, CAM_DEV_NOT_THERE);
2111 cts->protocol = PROTO_SCSI;
2112 cts->protocol_version = SCSI_REV_SPC2;
2113 cts->transport = XPORT_FC;
2114 cts->transport_version = 2;
2116 scsi->valid = CTS_SCSI_VALID_TQ;
2117 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
2120 ocs_xport_status(ocs->xport, OCS_XPORT_LINK_SPEED, &value);
2121 fc->bitrate = value.value * 100;
2123 fc->wwpn = tgt->wwpn;
2125 fc->wwnn = tgt->wwnn;
2127 fc->port = tgt->port_id;
2129 fc->valid = CTS_FC_VALID_SPEED |
2134 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
2138 case XPT_SET_TRAN_SETTINGS:
2139 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
2143 case XPT_CALC_GEOMETRY:
2144 cam_calc_geometry(&ccb->ccg, TRUE);
2148 case XPT_GET_SIM_KNOB:
2150 struct ccb_sim_knob *knob = &ccb->knob;
2152 ocs_fcport *fcp = FCPORT(ocs, bus);
2154 if (ocs->ocs_xport != OCS_XPORT_FC) {
2155 ocs_set_ccb_status(ccb, CAM_REQ_INVALID);
2161 wwn = *((uint64_t *)ocs_scsi_get_property_ptr(ocs,
2163 knob->xport_specific.fc.wwnn = be64toh(wwn);
2165 wwn = *((uint64_t *)ocs_scsi_get_property_ptr(ocs,
2167 knob->xport_specific.fc.wwpn = be64toh(wwn);
2169 knob->xport_specific.fc.wwnn = fcp->vport->wwnn;
2170 knob->xport_specific.fc.wwpn = fcp->vport->wwpn;
2173 knob->xport_specific.fc.role = fcp->role;
2174 knob->xport_specific.fc.valid = KNOB_VALID_ADDRESS |
2177 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
2181 case XPT_SET_SIM_KNOB:
2183 struct ccb_sim_knob *knob = &ccb->knob;
2184 bool role_changed = FALSE;
2185 ocs_fcport *fcp = FCPORT(ocs, bus);
2187 if (ocs->ocs_xport != OCS_XPORT_FC) {
2188 ocs_set_ccb_status(ccb, CAM_REQ_INVALID);
2193 if (knob->xport_specific.fc.valid & KNOB_VALID_ADDRESS) {
2194 device_printf(ocs->dev,
2195 "%s: XPT_SET_SIM_KNOB wwnn=%llx wwpn=%llx\n",
2197 (unsigned long long)knob->xport_specific.fc.wwnn,
2198 (unsigned long long)knob->xport_specific.fc.wwpn);
2201 if (knob->xport_specific.fc.valid & KNOB_VALID_ROLE) {
2202 switch (knob->xport_specific.fc.role) {
2203 case KNOB_ROLE_NONE:
2204 if (fcp->role != KNOB_ROLE_NONE) {
2205 role_changed = TRUE;
2208 case KNOB_ROLE_TARGET:
2209 if (fcp->role != KNOB_ROLE_TARGET) {
2210 role_changed = TRUE;
2213 case KNOB_ROLE_INITIATOR:
2214 if (fcp->role != KNOB_ROLE_INITIATOR) {
2215 role_changed = TRUE;
2218 case KNOB_ROLE_BOTH:
2219 if (fcp->role != KNOB_ROLE_BOTH) {
2220 role_changed = TRUE;
2224 device_printf(ocs->dev,
2225 "%s: XPT_SET_SIM_KNOB unsupported role: %d\n",
2226 __func__, knob->xport_specific.fc.role);
2230 device_printf(ocs->dev,
2231 "BUS:%d XPT_SET_SIM_KNOB old_role: %d new_role: %d\n",
2232 bus, fcp->role, knob->xport_specific.fc.role);
2234 ocs_fcp_change_role(ocs, fcp, knob->xport_specific.fc.role);
2240 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
2246 union ccb *accb = ccb->cab.abort_ccb;
2248 switch (accb->ccb_h.func_code) {
2249 case XPT_ACCEPT_TARGET_IO:
2250 ocs_abort_atio(ocs, ccb);
2252 case XPT_IMMEDIATE_NOTIFY:
2253 ocs_abort_inot(ocs, ccb);
2256 rc = ocs_abort_initiator_io(ocs, accb);
2258 ccb->ccb_h.status = CAM_UA_ABORT;
2260 ccb->ccb_h.status = CAM_REQ_CMP;
2265 printf("abort of unknown func %#x\n",
2266 accb->ccb_h.func_code);
2267 ccb->ccb_h.status = CAM_REQ_INVALID;
2273 if (ocs_xport_control(ocs->xport, OCS_XPORT_PORT_OFFLINE) == 0) {
2274 rc = ocs_xport_control(ocs->xport, OCS_XPORT_PORT_ONLINE);
2276 ocs_log_debug(ocs, "Failed to bring port online"
2279 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
2281 ocs_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
2287 ocs_node_t *node = NULL;
2288 ocs_io_t *io = NULL;
2290 ocs_fcport *fcp = FCPORT(ocs, bus);
2292 node = ocs_node_get_instance(ocs, fcp->tgt[ccb_h->target_id].node_id);
2294 device_printf(ocs->dev, "%s: no device %d\n",
2295 __func__, ccb_h->target_id);
2296 ocs_set_ccb_status(ccb, CAM_DEV_NOT_THERE);
2301 io = ocs_scsi_io_alloc(node, OCS_SCSI_IO_ROLE_ORIGINATOR);
2303 device_printf(ocs->dev, "%s: unable to alloc IO\n",
2305 ocs_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
2310 rc = ocs_scsi_send_tmf(node, io, NULL, ccb_h->target_lun,
2311 OCS_SCSI_TMF_LOGICAL_UNIT_RESET,
2312 NULL, 0, 0, /* sgl, sgl_count, length */
2313 ocs_initiator_tmf_cb, NULL/*arg*/);
2316 ocs_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
2318 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
2321 if (node->fcp2device) {
2322 ocs_reset_crn(node, ccb_h->target_lun);
2328 case XPT_EN_LUN: /* target support */
2330 ocs_tgt_resource_t *trsrc = NULL;
2331 uint32_t status = 0;
2332 ocs_fcport *fcp = FCPORT(ocs, bus);
2334 device_printf(ocs->dev, "XPT_EN_LUN %sable %d:%d\n",
2335 ccb->cel.enable ? "en" : "dis",
2336 ccb->ccb_h.target_id,
2337 (unsigned int)ccb->ccb_h.target_lun);
2339 trsrc = ocs_tgt_resource_get(fcp, &ccb->ccb_h, &status);
2341 trsrc->enabled = ccb->cel.enable;
2343 /* Abort all ATIO/INOT on LUN disable */
2344 if (trsrc->enabled == FALSE) {
2345 ocs_tgt_resource_abort(ocs, trsrc);
2347 STAILQ_INIT(&trsrc->atio);
2348 STAILQ_INIT(&trsrc->inot);
2350 status = CAM_REQ_CMP;
2353 ocs_set_ccb_status(ccb, status);
2358 * The flow of target IOs in CAM is:
2359 * - CAM supplies a number of CCBs to the driver used for received
2361 * - when the driver receives a command, it copies the relevant
2362 * information to the CCB and returns it to the CAM using xpt_done()
2363 * - after the target server processes the request, it creates
2364 * a new CCB containing information on how to continue the IO and
2365 * passes that to the driver
2366 * - the driver processes the "continue IO" (a.k.a CTIO) CCB
2367 * - once the IO completes, the driver returns the CTIO to the CAM
2370 case XPT_ACCEPT_TARGET_IO: /* used to inform upper layer of
2371 received CDB (a.k.a. ATIO) */
2372 case XPT_IMMEDIATE_NOTIFY: /* used to inform upper layer of other
2373 event (a.k.a. INOT) */
2375 ocs_tgt_resource_t *trsrc = NULL;
2376 uint32_t status = 0;
2377 ocs_fcport *fcp = FCPORT(ocs, bus);
2379 /*printf("XPT_%s %p\n", ccb_h->func_code == XPT_ACCEPT_TARGET_IO ?
2380 "ACCEPT_TARGET_IO" : "IMMEDIATE_NOTIFY", ccb);*/
2381 trsrc = ocs_tgt_resource_get(fcp, &ccb->ccb_h, &status);
2382 if (trsrc == NULL) {
2383 ocs_set_ccb_status(ccb, CAM_DEV_NOT_THERE);
2388 if (XPT_ACCEPT_TARGET_IO == ccb->ccb_h.func_code) {
2389 struct ccb_accept_tio *atio = NULL;
2391 atio = (struct ccb_accept_tio *)ccb;
2392 atio->init_id = 0x0badbeef;
2393 atio->tag_id = 0xdeadc0de;
2395 STAILQ_INSERT_TAIL(&trsrc->atio, &ccb->ccb_h,
2398 STAILQ_INSERT_TAIL(&trsrc->inot, &ccb->ccb_h,
2401 ccb->ccb_h.ccb_io_ptr = NULL;
2402 ccb->ccb_h.ccb_ocs_ptr = ocs;
2403 ocs_set_ccb_status(ccb, CAM_REQ_INPROG);
2405 * These actions give resources to the target driver.
2406 * If we didn't return here, this function would call
2407 * xpt_done(), signaling to the upper layers that an
2408 * IO or other event had arrived.
2412 case XPT_NOTIFY_ACKNOWLEDGE:
2414 ocs_io_t *io = NULL;
2415 ocs_io_t *abortio = NULL;
2417 /* Get the IO reference for this tag */
2418 io = ocs_scsi_find_io(ocs, ccb->cna2.tag_id);
2420 device_printf(ocs->dev,
2421 "%s: XPT_NOTIFY_ACKNOWLEDGE no IO with tag %#x\n",
2422 __func__, ccb->cna2.tag_id);
2423 ocs_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
2428 abortio = io->tgt_io.app;
2430 abortio->tgt_io.flags &= ~OCS_CAM_IO_F_ABORT_NOTIFY;
2431 device_printf(ocs->dev,
2432 "%s: XPT_NOTIFY_ACK state=%d tag=%#x xid=%#x"
2433 " flags=%#x\n", __func__, abortio->tgt_io.state,
2434 abortio->tag, abortio->init_task_tag,
2435 abortio->tgt_io.flags);
2436 /* TMF response was sent in abort callback */
2438 ocs_scsi_send_tmf_resp(io,
2439 OCS_SCSI_TMF_FUNCTION_COMPLETE,
2440 NULL, ocs_target_tmf_cb, NULL);
2443 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
2447 case XPT_CONT_TARGET_IO: /* continue target IO, sending data/response (a.k.a. CTIO) */
2448 if (ocs_target_io(ocs, ccb)) {
2449 device_printf(ocs->dev,
2450 "XPT_CONT_TARGET_IO failed flags=%x tag=%#x\n",
2451 ccb->ccb_h.flags, ccb->csio.tag_id);
2456 device_printf(ocs->dev, "unhandled func_code = %#x\n",
2458 ccb_h->status = CAM_REQ_INVALID;
2466 * @brief Process events
2468 * @param sim pointer to the SCSI Interface Module
2472 ocs_poll(struct cam_sim *sim)
2474 printf("%s\n", __func__);
2478 ocs_initiator_tmf_cb(ocs_io_t *io, ocs_scsi_io_status_e scsi_status,
2479 ocs_scsi_cmd_resp_t *rsp, uint32_t flags, void *arg)
2483 switch (scsi_status) {
2484 case OCS_SCSI_STATUS_GOOD:
2485 case OCS_SCSI_STATUS_NO_IO:
2487 case OCS_SCSI_STATUS_CHECK_RESPONSE:
2488 if (rsp->response_data_length == 0) {
2489 ocs_log_test(io->ocs, "check response without data?!?\n");
2494 if (rsp->response_data[3] != 0) {
2495 ocs_log_test(io->ocs, "TMF status %08x\n",
2496 be32toh(*((uint32_t *)rsp->response_data)));
2502 ocs_log_test(io->ocs, "status=%#x\n", scsi_status);
2506 ocs_scsi_io_free(io);
2512 * @brief lookup target resource structure
2514 * Arbitrarily support
2515 * - wildcard target ID + LU
2516 * - 0 target ID + non-wildcard LU
2518 * @param ocs the driver instance's software context
2519 * @param ccb_h pointer to the CCB header
2520 * @param status returned status value
2522 * @return pointer to the target resource, NULL if none available (e.g. if LU
2525 static ocs_tgt_resource_t *ocs_tgt_resource_get(ocs_fcport *fcp,
2526 struct ccb_hdr *ccb_h, uint32_t *status)
2528 target_id_t tid = ccb_h->target_id;
2529 lun_id_t lun = ccb_h->target_lun;
2531 if (CAM_TARGET_WILDCARD == tid) {
2532 if (CAM_LUN_WILDCARD != lun) {
2533 *status = CAM_LUN_INVALID;
2536 return &fcp->targ_rsrc_wildcard;
2538 if (lun < OCS_MAX_LUN) {
2539 return &fcp->targ_rsrc[lun];
2541 *status = CAM_LUN_INVALID;
2549 ocs_tgt_resource_abort(struct ocs_softc *ocs, ocs_tgt_resource_t *trsrc)
2551 union ccb *ccb = NULL;
2556 ccb = (union ccb *)STAILQ_FIRST(&trsrc->atio);
2558 STAILQ_REMOVE_HEAD(&trsrc->atio, sim_links.stqe);
2559 ccb->ccb_h.status = CAM_REQ_ABORTED;
2567 ccb = (union ccb *)STAILQ_FIRST(&trsrc->inot);
2569 STAILQ_REMOVE_HEAD(&trsrc->inot, sim_links.stqe);
2570 ccb->ccb_h.status = CAM_REQ_ABORTED;
2580 ocs_abort_atio(struct ocs_softc *ocs, union ccb *ccb)
2583 ocs_io_t *aio = NULL;
2584 ocs_tgt_resource_t *trsrc = NULL;
2585 uint32_t status = CAM_REQ_INVALID;
2586 struct ccb_hdr *cur = NULL;
2587 union ccb *accb = ccb->cab.abort_ccb;
2589 int bus = cam_sim_bus(xpt_path_sim((ccb)->ccb_h.path));
2590 ocs_fcport *fcp = FCPORT(ocs, bus);
2592 trsrc = ocs_tgt_resource_get(fcp, &accb->ccb_h, &status);
2593 if (trsrc != NULL) {
2594 STAILQ_FOREACH(cur, &trsrc->atio, sim_links.stqe) {
2595 if (cur != &accb->ccb_h)
2598 STAILQ_REMOVE(&trsrc->atio, cur, ccb_hdr,
2600 accb->ccb_h.status = CAM_REQ_ABORTED;
2602 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
2607 /* if the ATIO has a valid IO pointer, CAM is telling
2608 * the driver that the ATIO (which represents the entire
2609 * exchange) has been aborted. */
2611 aio = accb->ccb_h.ccb_io_ptr;
2613 ccb->ccb_h.status = CAM_UA_ABORT;
2617 device_printf(ocs->dev,
2618 "%s: XPT_ABORT ATIO state=%d tag=%#x"
2619 " xid=%#x flags=%#x\n", __func__,
2620 aio->tgt_io.state, aio->tag,
2621 aio->init_task_tag, aio->tgt_io.flags);
2622 /* Expectations are:
2623 * - abort task was received
2624 * - already aborted IO in the DEVICE
2625 * - already received NOTIFY ACKNOWLEDGE */
2627 if ((aio->tgt_io.flags & OCS_CAM_IO_F_ABORT_RECV) == 0) {
2628 device_printf(ocs->dev, "%s: abort not received or io completed \n", __func__);
2629 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
2633 aio->tgt_io.flags |= OCS_CAM_IO_F_ABORT_CAM;
2634 ocs_target_io_free(aio);
2635 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
2641 ocs_abort_inot(struct ocs_softc *ocs, union ccb *ccb)
2643 ocs_tgt_resource_t *trsrc = NULL;
2644 uint32_t status = CAM_REQ_INVALID;
2645 struct ccb_hdr *cur = NULL;
2646 union ccb *accb = ccb->cab.abort_ccb;
2648 int bus = cam_sim_bus(xpt_path_sim((ccb)->ccb_h.path));
2649 ocs_fcport *fcp = FCPORT(ocs, bus);
2651 trsrc = ocs_tgt_resource_get(fcp, &accb->ccb_h, &status);
2653 STAILQ_FOREACH(cur, &trsrc->inot, sim_links.stqe) {
2654 if (cur != &accb->ccb_h)
2657 STAILQ_REMOVE(&trsrc->inot, cur, ccb_hdr,
2659 accb->ccb_h.status = CAM_REQ_ABORTED;
2661 ocs_set_ccb_status(ccb, CAM_REQ_CMP);
2666 ocs_set_ccb_status(ccb, CAM_UA_ABORT);
2671 ocs_abort_initiator_io(struct ocs_softc *ocs, union ccb *accb)
2674 ocs_node_t *node = NULL;
2675 ocs_io_t *io = NULL;
2677 struct ccb_scsiio *csio = &accb->csio;
2679 ocs_fcport *fcp = FCPORT(ocs, cam_sim_bus(xpt_path_sim((accb)->ccb_h.path)));
2680 node = ocs_node_get_instance(ocs, fcp->tgt[accb->ccb_h.target_id].node_id);
2682 device_printf(ocs->dev, "%s: no device %d\n",
2683 __func__, accb->ccb_h.target_id);
2684 ocs_set_ccb_status(accb, CAM_DEV_NOT_THERE);
2689 io = ocs_scsi_io_alloc(node, OCS_SCSI_IO_ROLE_ORIGINATOR);
2691 device_printf(ocs->dev,
2692 "%s: unable to alloc IO\n", __func__);
2693 ocs_set_ccb_status(accb, CAM_REQ_CMP_ERR);
2698 rc = ocs_scsi_send_tmf(node, io,
2699 (ocs_io_t *)csio->ccb_h.ccb_io_ptr,
2700 accb->ccb_h.target_lun,
2701 OCS_SCSI_TMF_ABORT_TASK,
2703 ocs_initiator_tmf_cb, NULL/*arg*/);
2709 ocs_scsi_ini_ddump(ocs_textbuf_t *textbuf, ocs_scsi_ddump_type_e type, void *obj)
2712 case OCS_SCSI_DDUMP_DEVICE: {
2716 case OCS_SCSI_DDUMP_DOMAIN: {
2717 //ocs_domain_t *domain = obj;
2720 case OCS_SCSI_DDUMP_SPORT: {
2721 //ocs_sport_t *sport = obj;
2724 case OCS_SCSI_DDUMP_NODE: {
2725 //ocs_node_t *node = obj;
2728 case OCS_SCSI_DDUMP_IO: {
2729 //ocs_io_t *io = obj;
2739 ocs_scsi_tgt_ddump(ocs_textbuf_t *textbuf, ocs_scsi_ddump_type_e type, void *obj)
2742 case OCS_SCSI_DDUMP_DEVICE: {
2746 case OCS_SCSI_DDUMP_DOMAIN: {
2747 //ocs_domain_t *domain = obj;
2750 case OCS_SCSI_DDUMP_SPORT: {
2751 //ocs_sport_t *sport = obj;
2754 case OCS_SCSI_DDUMP_NODE: {
2755 //ocs_node_t *node = obj;
2758 case OCS_SCSI_DDUMP_IO: {
2760 char *state_str = NULL;
2762 switch (io->tgt_io.state) {
2763 case OCS_CAM_IO_FREE:
2766 case OCS_CAM_IO_COMMAND:
2767 state_str = "COMMAND";
2769 case OCS_CAM_IO_DATA:
2772 case OCS_CAM_IO_DATA_DONE:
2773 state_str = "DATA_DONE";
2775 case OCS_CAM_IO_RESP:
2779 state_str = "xxx BAD xxx";
2781 ocs_ddump_value(textbuf, "cam_st", "%s", state_str);
2782 if (io->tgt_io.app) {
2783 ocs_ddump_value(textbuf, "cam_flags", "%#x",
2784 ((union ccb *)(io->tgt_io.app))->ccb_h.flags);
2785 ocs_ddump_value(textbuf, "cam_status", "%#x",
2786 ((union ccb *)(io->tgt_io.app))->ccb_h.status);
2797 int32_t ocs_scsi_get_block_vaddr(ocs_io_t *io, uint64_t blocknumber,
2798 ocs_scsi_vaddr_len_t addrlen[],
2799 uint32_t max_addrlen, void **dif_vaddr)
2805 ocs_get_crn(ocs_node_t *node, uint8_t *crn, uint64_t lun)
2808 struct ocs_lun_crn *lcrn = NULL;
2809 idx = lun % OCS_MAX_LUN;
2811 lcrn = node->ini_node.lun_crn[idx];
2814 lcrn = ocs_malloc(node->ocs, sizeof(struct ocs_lun_crn),
2821 node->ini_node.lun_crn[idx] = lcrn;
2824 if (lcrn->lun != lun) {
2828 if (lcrn->crnseed == 0)
2831 *crn = lcrn->crnseed++;
2836 ocs_del_crn(ocs_node_t *node)
2839 struct ocs_lun_crn *lcrn = NULL;
2841 for(i = 0; i < OCS_MAX_LUN; i++) {
2842 lcrn = node->ini_node.lun_crn[i];
2844 ocs_free(node->ocs, lcrn, sizeof(*lcrn));
2852 ocs_reset_crn(ocs_node_t *node, uint64_t lun)
2855 struct ocs_lun_crn *lcrn = NULL;
2856 idx = lun % OCS_MAX_LUN;
2858 lcrn = node->ini_node.lun_crn[idx];