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Wait for AEN task to be completed(if in queue) before resetting the controller

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and return without processing event in AEN thread, if controller reset is in progress.

Submitted by:   Sumit Saxena <sumit.saxena@broadcom.com>
Reviewed by:    Kashyap Desai <Kashyap.Desai@broadcom.com>
MFC after:  3 days
Sponsored by:   Broadcom Limited/AVAGO Technologies
This commit is contained in:
Kashyap D Desai 2016-11-29 13:02:48 +00:00
parent 8bb601ac8a
commit 85c0a961fa
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=309291
1 changed files with 15 additions and 15 deletions
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30
sys/dev/mrsas/mrsas.c
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@ -2839,6 +2839,14 @@ mrsas_ocr_thread(void *arg)
mtx_unlock_spin(&sc->ioctl_lock);
sc->reset_count++;
/*
* Wait for the AEN task to be completed if it is running.
*/
mtx_unlock(&sc->sim_lock);
taskqueue_drain(sc->ev_tq, &sc->ev_task);
mtx_lock(&sc->sim_lock);
taskqueue_block(sc->ev_tq);
/* Try to reset the controller */
mrsas_reset_ctrl(sc, sc->do_timedout_reset);
@ -2848,6 +2856,7 @@ mrsas_ocr_thread(void *arg)
mrsas_atomic_set(&sc->target_reset_outstanding, 0);
memset(sc->target_reset_pool, 0,
sizeof(sc->target_reset_pool));
taskqueue_unblock(sc->ev_tq);
}
/* Now allow IOs to come to the SIM */
@ -3034,8 +3043,6 @@ mrsas_reset_ctrl(struct mrsas_softc *sc, u_int8_t reset_reason)
}
}
sc->aen_cmd = NULL;
/* Reset load balance info */
memset(sc->load_balance_info, 0,
sizeof(LD_LOAD_BALANCE_INFO) * MAX_LOGICAL_DRIVES_EXT);
@ -3050,17 +3057,6 @@ mrsas_reset_ctrl(struct mrsas_softc *sc, u_int8_t reset_reason)
megasas_setup_jbod_map(sc);
memset(sc->pd_list, 0,
MRSAS_MAX_PD * sizeof(struct mrsas_pd_list));
if (mrsas_get_pd_list(sc) != SUCCESS) {
device_printf(sc->mrsas_dev, "Get PD list failed from OCR.\n"
"Will get the latest PD LIST after OCR on event.\n");
}
memset(sc->ld_ids, 0xff, MRSAS_MAX_LD_IDS);
if (mrsas_get_ld_list(sc) != SUCCESS) {
device_printf(sc->mrsas_dev, "Get LD lsit failed from OCR.\n"
"Will get the latest LD LIST after OCR on event.\n");
}
mrsas_clear_bit(MRSAS_FUSION_IN_RESET, &sc->reset_flags);
mrsas_enable_intr(sc);
sc->adprecovery = MRSAS_HBA_OPERATIONAL;
@ -4422,6 +4418,11 @@ mrsas_aen_handler(struct mrsas_softc *sc)
printf("invalid instance!\n");
return;
}
if (sc->remove_in_progress || sc->reset_in_progress) {
device_printf(sc->mrsas_dev, "Returning from %s, line no %d\n",
__func__, __LINE__);
return;
}
if (sc->evt_detail_mem) {
switch (sc->evt_detail_mem->code) {
case MR_EVT_PD_INSERTED:
@ -4536,8 +4537,7 @@ mrsas_complete_aen(struct mrsas_softc *sc, struct mrsas_mfi_cmd *cmd)
sc->aen_cmd = NULL;
mrsas_release_mfi_cmd(cmd);
if (!sc->remove_in_progress)
taskqueue_enqueue(sc->ev_tq, &sc->ev_task);
taskqueue_enqueue(sc->ev_tq, &sc->ev_task);
return;
}