[SCSI] bfa: Brocade BFA FC SCSI driver

Add new driver for Brocade Hardware

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 689 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/bfa_tskim.c b/drivers/scsi/bfa/bfa_tskim.c
new file mode 100644
index 000000000000..010d40d1e5d3
--- /dev/null
+++ b/drivers/scsi/bfa/bfa_tskim.c
@@ -0,0 +1,689 @@
+/*
+ * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
+ * All rights reserved
+ * www.brocade.com
+ *
+ * Linux driver for Brocade Fibre Channel Host Bus Adapter.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License (GPL) Version 2 as
+ * published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include <bfa.h>
+#include <bfa_cb_ioim_macros.h>
+
+BFA_TRC_FILE(HAL, TSKIM);
+
+/**
+ * task management completion handling
+ */
+#define bfa_tskim_qcomp(__tskim, __cbfn) do {                        \
+        bfa_cb_queue((__tskim)->bfa, &(__tskim)->hcb_qe, __cbfn, (__tskim)); \
+        bfa_tskim_notify_comp(__tskim);      \
+} while (0)
+
+#define bfa_tskim_notify_comp(__tskim) do {                                  \
+        if ((__tskim)->notify)                                               \
+                bfa_itnim_tskdone((__tskim)->itnim);      \
+} while (0)
+
+/*
+ * forward declarations
+ */
+static void     __bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete);
+static void     __bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete);
+static bfa_boolean_t bfa_tskim_match_scope(struct bfa_tskim_s *tskim,
+                                               lun_t lun);
+static void     bfa_tskim_gather_ios(struct bfa_tskim_s *tskim);
+static void     bfa_tskim_cleanp_comp(void *tskim_cbarg);
+static void     bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim);
+static bfa_boolean_t bfa_tskim_send(struct bfa_tskim_s *tskim);
+static bfa_boolean_t bfa_tskim_send_abort(struct bfa_tskim_s *tskim);
+static void     bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim);
+
+/**
+ *  bfa_tskim_sm
+ */
+
+enum bfa_tskim_event {
+        BFA_TSKIM_SM_START        = 1,  /*  TM command start            */
+        BFA_TSKIM_SM_DONE         = 2,  /*  TM completion               */
+        BFA_TSKIM_SM_QRESUME      = 3,  /*  resume after qfull          */
+        BFA_TSKIM_SM_HWFAIL       = 5,  /*  IOC h/w failure event       */
+        BFA_TSKIM_SM_HCB          = 6,  /*  BFA callback completion     */
+        BFA_TSKIM_SM_IOS_DONE     = 7,  /*  IO and sub TM completions   */
+        BFA_TSKIM_SM_CLEANUP      = 8,  /*  TM cleanup on ITN offline   */
+        BFA_TSKIM_SM_CLEANUP_DONE = 9,  /*  TM abort completion         */
+};
+
+static void     bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim,
+                                        enum bfa_tskim_event event);
+static void     bfa_tskim_sm_active(struct bfa_tskim_s *tskim,
+                                        enum bfa_tskim_event event);
+static void     bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim,
+                                         enum bfa_tskim_event event);
+static void     bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim,
+                                         enum bfa_tskim_event event);
+static void     bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim,
+                                       enum bfa_tskim_event event);
+static void     bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim,
+                                       enum bfa_tskim_event event);
+static void     bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim,
+                                     enum bfa_tskim_event event);
+
+/**
+ *      Task management command beginning state.
+ */
+static void
+bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
+{
+        bfa_trc(tskim->bfa, event);
+
+        switch (event) {
+        case BFA_TSKIM_SM_START:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_active);
+                bfa_tskim_gather_ios(tskim);
+
+                /**
+                 * If device is offline, do not send TM on wire. Just cleanup
+                 * any pending IO requests and complete TM request.
+                 */
+                if (!bfa_itnim_is_online(tskim->itnim)) {
+                        bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
+                        tskim->tsk_status = BFI_TSKIM_STS_OK;
+                        bfa_tskim_cleanup_ios(tskim);
+                        return;
+                }
+
+                if (!bfa_tskim_send(tskim)) {
+                        bfa_sm_set_state(tskim, bfa_tskim_sm_qfull);
+                        bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq,
+                                          &tskim->reqq_wait);
+                }
+                break;
+
+        default:
+                bfa_assert(0);
+        }
+}
+
+/**
+ * brief
+ *      TM command is active, awaiting completion from firmware to
+ *      cleanup IO requests in TM scope.
+ */
+static void
+bfa_tskim_sm_active(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
+{
+        bfa_trc(tskim->bfa, event);
+
+        switch (event) {
+        case BFA_TSKIM_SM_DONE:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
+                bfa_tskim_cleanup_ios(tskim);
+                break;
+
+        case BFA_TSKIM_SM_CLEANUP:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup);
+                if (!bfa_tskim_send_abort(tskim)) {
+                        bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup_qfull);
+                        bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq,
+                                &tskim->reqq_wait);
+                }
+                break;
+
+        case BFA_TSKIM_SM_HWFAIL:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
+                bfa_tskim_iocdisable_ios(tskim);
+                bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
+                break;
+
+        default:
+                bfa_assert(0);
+        }
+}
+
+/**
+ *      An active TM is being cleaned up since ITN is offline. Awaiting cleanup
+ *      completion event from firmware.
+ */
+static void
+bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
+{
+        bfa_trc(tskim->bfa, event);
+
+        switch (event) {
+        case BFA_TSKIM_SM_DONE:
+                /**
+                 * Ignore and wait for ABORT completion from firmware.
+                 */
+                break;
+
+        case BFA_TSKIM_SM_CLEANUP_DONE:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
+                bfa_tskim_cleanup_ios(tskim);
+                break;
+
+        case BFA_TSKIM_SM_HWFAIL:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
+                bfa_tskim_iocdisable_ios(tskim);
+                bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
+                break;
+
+        default:
+                bfa_assert(0);
+        }
+}
+
+static void
+bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
+{
+        bfa_trc(tskim->bfa, event);
+
+        switch (event) {
+        case BFA_TSKIM_SM_IOS_DONE:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
+                bfa_tskim_qcomp(tskim, __bfa_cb_tskim_done);
+                break;
+
+        case BFA_TSKIM_SM_CLEANUP:
+                /**
+                 * Ignore, TM command completed on wire.
+                 * Notify TM conmpletion on IO cleanup completion.
+                 */
+                break;
+
+        case BFA_TSKIM_SM_HWFAIL:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
+                bfa_tskim_iocdisable_ios(tskim);
+                bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
+                break;
+
+        default:
+                bfa_assert(0);
+        }
+}
+
+/**
+ *      Task management command is waiting for room in request CQ
+ */
+static void
+bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
+{
+        bfa_trc(tskim->bfa, event);
+
+        switch (event) {
+        case BFA_TSKIM_SM_QRESUME:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_active);
+                bfa_tskim_send(tskim);
+                break;
+
+        case BFA_TSKIM_SM_CLEANUP:
+                /**
+                 * No need to send TM on wire since ITN is offline.
+                 */
+                bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
+                bfa_reqq_wcancel(&tskim->reqq_wait);
+                bfa_tskim_cleanup_ios(tskim);
+                break;
+
+        case BFA_TSKIM_SM_HWFAIL:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
+                bfa_reqq_wcancel(&tskim->reqq_wait);
+                bfa_tskim_iocdisable_ios(tskim);
+                bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
+                break;
+
+        default:
+                bfa_assert(0);
+        }
+}
+
+/**
+ *      Task management command is active, awaiting for room in request CQ
+ *      to send clean up request.
+ */
+static void
+bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim,
+                enum bfa_tskim_event event)
+{
+        bfa_trc(tskim->bfa, event);
+
+        switch (event) {
+        case BFA_TSKIM_SM_DONE:
+                bfa_reqq_wcancel(&tskim->reqq_wait);
+                /**
+                 *
+                 * Fall through !!!
+                 */
+
+        case BFA_TSKIM_SM_QRESUME:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup);
+                bfa_tskim_send_abort(tskim);
+                break;
+
+        case BFA_TSKIM_SM_HWFAIL:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
+                bfa_reqq_wcancel(&tskim->reqq_wait);
+                bfa_tskim_iocdisable_ios(tskim);
+                bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
+                break;
+
+        default:
+                bfa_assert(0);
+        }
+}
+
+/**
+ *      BFA callback is pending
+ */
+static void
+bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
+{
+        bfa_trc(tskim->bfa, event);
+
+        switch (event) {
+        case BFA_TSKIM_SM_HCB:
+                bfa_sm_set_state(tskim, bfa_tskim_sm_uninit);
+                bfa_tskim_free(tskim);
+                break;
+
+        case BFA_TSKIM_SM_CLEANUP:
+                bfa_tskim_notify_comp(tskim);
+                break;
+
+        case BFA_TSKIM_SM_HWFAIL:
+                break;
+
+        default:
+                bfa_assert(0);
+        }
+}
+
+
+
+/**
+ *  bfa_tskim_private
+ */
+
+static void
+__bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete)
+{
+        struct bfa_tskim_s *tskim = cbarg;
+
+        if (!complete) {
+                bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB);
+                return;
+        }
+
+        bfa_stats(tskim->itnim, tm_success);
+        bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk, tskim->tsk_status);
+}
+
+static void
+__bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete)
+{
+        struct bfa_tskim_s *tskim = cbarg;
+
+        if (!complete) {
+                bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB);
+                return;
+        }
+
+        bfa_stats(tskim->itnim, tm_failures);
+        bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk,
+                           BFI_TSKIM_STS_FAILED);
+}
+
+static          bfa_boolean_t
+bfa_tskim_match_scope(struct bfa_tskim_s *tskim, lun_t lun)
+{
+        switch (tskim->tm_cmnd) {
+        case FCP_TM_TARGET_RESET:
+                return BFA_TRUE;
+
+        case FCP_TM_ABORT_TASK_SET:
+        case FCP_TM_CLEAR_TASK_SET:
+        case FCP_TM_LUN_RESET:
+        case FCP_TM_CLEAR_ACA:
+                return (tskim->lun == lun);
+
+        default:
+                bfa_assert(0);
+        }
+
+        return BFA_FALSE;
+}
+
+/**
+ *      Gather affected IO requests and task management commands.
+ */
+static void
+bfa_tskim_gather_ios(struct bfa_tskim_s *tskim)
+{
+        struct bfa_itnim_s *itnim = tskim->itnim;
+        struct bfa_ioim_s *ioim;
+        struct list_head        *qe, *qen;
+
+        INIT_LIST_HEAD(&tskim->io_q);
+
+        /**
+         * Gather any active IO requests first.
+         */
+        list_for_each_safe(qe, qen, &itnim->io_q) {
+                ioim = (struct bfa_ioim_s *) qe;
+                if (bfa_tskim_match_scope
+                    (tskim, bfa_cb_ioim_get_lun(ioim->dio))) {
+                        list_del(&ioim->qe);
+                        list_add_tail(&ioim->qe, &tskim->io_q);
+                }
+        }
+
+        /**
+         * Failback any pending IO requests immediately.
+         */
+        list_for_each_safe(qe, qen, &itnim->pending_q) {
+                ioim = (struct bfa_ioim_s *) qe;
+                if (bfa_tskim_match_scope
+                    (tskim, bfa_cb_ioim_get_lun(ioim->dio))) {
+                        list_del(&ioim->qe);
+                        list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
+                        bfa_ioim_tov(ioim);
+                }
+        }
+}
+
+/**
+ *              IO cleanup completion
+ */
+static void
+bfa_tskim_cleanp_comp(void *tskim_cbarg)
+{
+        struct bfa_tskim_s *tskim = tskim_cbarg;
+
+        bfa_stats(tskim->itnim, tm_io_comps);
+        bfa_sm_send_event(tskim, BFA_TSKIM_SM_IOS_DONE);
+}
+
+/**
+ *      Gather affected IO requests and task management commands.
+ */
+static void
+bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim)
+{
+        struct bfa_ioim_s *ioim;
+        struct list_head        *qe, *qen;
+
+        bfa_wc_init(&tskim->wc, bfa_tskim_cleanp_comp, tskim);
+
+        list_for_each_safe(qe, qen, &tskim->io_q) {
+                ioim = (struct bfa_ioim_s *) qe;
+                bfa_wc_up(&tskim->wc);
+                bfa_ioim_cleanup_tm(ioim, tskim);
+        }
+
+        bfa_wc_wait(&tskim->wc);
+}
+
+/**
+ *      Send task management request to firmware.
+ */
+static bfa_boolean_t
+bfa_tskim_send(struct bfa_tskim_s *tskim)
+{
+        struct bfa_itnim_s *itnim = tskim->itnim;
+        struct bfi_tskim_req_s *m;
+
+        /**
+         * check for room in queue to send request now
+         */
+        m = bfa_reqq_next(tskim->bfa, itnim->reqq);
+        if (!m)
+                return BFA_FALSE;
+
+        /**
+         * build i/o request message next
+         */
+        bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_TM_REQ,
+                        bfa_lpuid(tskim->bfa));
+
+        m->tsk_tag = bfa_os_htons(tskim->tsk_tag);
+        m->itn_fhdl = tskim->itnim->rport->fw_handle;
+        m->t_secs = tskim->tsecs;
+        m->lun = tskim->lun;
+        m->tm_flags = tskim->tm_cmnd;
+
+        /**
+         * queue I/O message to firmware
+         */
+        bfa_reqq_produce(tskim->bfa, itnim->reqq);
+        return BFA_TRUE;
+}
+
+/**
+ *      Send abort request to cleanup an active TM to firmware.
+ */
+static bfa_boolean_t
+bfa_tskim_send_abort(struct bfa_tskim_s *tskim)
+{
+        struct bfa_itnim_s             *itnim = tskim->itnim;
+        struct bfi_tskim_abortreq_s    *m;
+
+        /**
+         * check for room in queue to send request now
+         */
+        m = bfa_reqq_next(tskim->bfa, itnim->reqq);
+        if (!m)
+                return BFA_FALSE;
+
+        /**
+         * build i/o request message next
+         */
+        bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_ABORT_REQ,
+                        bfa_lpuid(tskim->bfa));
+
+        m->tsk_tag  = bfa_os_htons(tskim->tsk_tag);
+
+        /**
+         * queue I/O message to firmware
+         */
+        bfa_reqq_produce(tskim->bfa, itnim->reqq);
+        return BFA_TRUE;
+}
+
+/**
+ *      Call to resume task management cmnd waiting for room in request queue.
+ */
+static void
+bfa_tskim_qresume(void *cbarg)
+{
+        struct bfa_tskim_s *tskim = cbarg;
+
+        bfa_fcpim_stats(tskim->fcpim, qresumes);
+        bfa_stats(tskim->itnim, tm_qresumes);
+        bfa_sm_send_event(tskim, BFA_TSKIM_SM_QRESUME);
+}
+
+/**
+ * Cleanup IOs associated with a task mangement command on IOC failures.
+ */
+static void
+bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim)
+{
+        struct bfa_ioim_s *ioim;
+        struct list_head        *qe, *qen;
+
+        list_for_each_safe(qe, qen, &tskim->io_q) {
+                ioim = (struct bfa_ioim_s *) qe;
+                bfa_ioim_iocdisable(ioim);
+        }
+}
+
+
+
+/**
+ *  bfa_tskim_friend
+ */
+
+/**
+ * Notification on completions from related ioim.
+ */
+void
+bfa_tskim_iodone(struct bfa_tskim_s *tskim)
+{
+        bfa_wc_down(&tskim->wc);
+}
+
+/**
+ * Handle IOC h/w failure notification from itnim.
+ */
+void
+bfa_tskim_iocdisable(struct bfa_tskim_s *tskim)
+{
+        tskim->notify = BFA_FALSE;
+        bfa_stats(tskim->itnim, tm_iocdowns);
+        bfa_sm_send_event(tskim, BFA_TSKIM_SM_HWFAIL);
+}
+
+/**
+ * Cleanup TM command and associated IOs as part of ITNIM offline.
+ */
+void
+bfa_tskim_cleanup(struct bfa_tskim_s *tskim)
+{
+        tskim->notify = BFA_TRUE;
+        bfa_stats(tskim->itnim, tm_cleanups);
+        bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP);
+}
+
+/**
+ *      Memory allocation and initialization.
+ */
+void
+bfa_tskim_attach(struct bfa_fcpim_mod_s *fcpim, struct bfa_meminfo_s *minfo)
+{
+        struct bfa_tskim_s *tskim;
+        u16        i;
+
+        INIT_LIST_HEAD(&fcpim->tskim_free_q);
+
+        tskim = (struct bfa_tskim_s *) bfa_meminfo_kva(minfo);
+        fcpim->tskim_arr = tskim;
+
+        for (i = 0; i < fcpim->num_tskim_reqs; i++, tskim++) {
+                /*
+                 * initialize TSKIM
+                 */
+                bfa_os_memset(tskim, 0, sizeof(struct bfa_tskim_s));
+                tskim->tsk_tag = i;
+                tskim->bfa     = fcpim->bfa;
+                tskim->fcpim   = fcpim;
+                tskim->notify  = BFA_FALSE;
+                bfa_reqq_winit(&tskim->reqq_wait, bfa_tskim_qresume,
+                                   tskim);
+                bfa_sm_set_state(tskim, bfa_tskim_sm_uninit);
+
+                list_add_tail(&tskim->qe, &fcpim->tskim_free_q);
+        }
+
+        bfa_meminfo_kva(minfo) = (u8 *) tskim;
+}
+
+void
+bfa_tskim_detach(struct bfa_fcpim_mod_s *fcpim)
+{
+    /**
+     * @todo
+     */
+}
+
+void
+bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
+{
+        struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
+        struct bfi_tskim_rsp_s *rsp = (struct bfi_tskim_rsp_s *) m;
+        struct bfa_tskim_s *tskim;
+        u16        tsk_tag = bfa_os_ntohs(rsp->tsk_tag);
+
+        tskim = BFA_TSKIM_FROM_TAG(fcpim, tsk_tag);
+        bfa_assert(tskim->tsk_tag == tsk_tag);
+
+        tskim->tsk_status = rsp->tsk_status;
+
+        /**
+         * Firmware sends BFI_TSKIM_STS_ABORTED status for abort
+         * requests. All other statuses are for normal completions.
+         */
+        if (rsp->tsk_status == BFI_TSKIM_STS_ABORTED) {
+                bfa_stats(tskim->itnim, tm_cleanup_comps);
+                bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP_DONE);
+        } else {
+                bfa_stats(tskim->itnim, tm_fw_rsps);
+                bfa_sm_send_event(tskim, BFA_TSKIM_SM_DONE);
+        }
+}
+
+
+
+/**
+ *  bfa_tskim_api
+ */
+
+
+struct bfa_tskim_s *
+bfa_tskim_alloc(struct bfa_s *bfa, struct bfad_tskim_s *dtsk)
+{
+        struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
+        struct bfa_tskim_s *tskim;
+
+        bfa_q_deq(&fcpim->tskim_free_q, &tskim);
+
+        if (!tskim)
+                bfa_fcpim_stats(fcpim, no_tskims);
+        else
+                tskim->dtsk = dtsk;
+
+        return tskim;
+}
+
+void
+bfa_tskim_free(struct bfa_tskim_s *tskim)
+{
+        bfa_assert(bfa_q_is_on_q_func(&tskim->itnim->tsk_q, &tskim->qe));
+        list_del(&tskim->qe);
+        list_add_tail(&tskim->qe, &tskim->fcpim->tskim_free_q);
+}
+
+/**
+ *      Start a task management command.
+ *
+ * @param[in]       tskim       BFA task management command instance
+ * @param[in]       itnim       i-t nexus for the task management command
+ * @param[in]       lun         lun, if applicable
+ * @param[in]       tm_cmnd     Task management command code.
+ * @param[in]       t_secs      Timeout in seconds
+ *
+ * @return None.
+ */
+void
+bfa_tskim_start(struct bfa_tskim_s *tskim, struct bfa_itnim_s *itnim, lun_t lun,
+                    enum fcp_tm_cmnd tm_cmnd, u8 tsecs)
+{
+        tskim->itnim   = itnim;
+        tskim->lun     = lun;
+        tskim->tm_cmnd = tm_cmnd;
+        tskim->tsecs   = tsecs;
+        tskim->notify  = BFA_FALSE;
+        bfa_stats(itnim, tm_cmnds);
+
+        list_add_tail(&tskim->qe, &itnim->tsk_q);
+        bfa_sm_send_event(tskim, BFA_TSKIM_SM_START);
+}
+
+