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([192.19.234.250]) by smtp.gmail.com with ESMTPSA id k13sm11825736pfc.50.2021.04.19.04.02.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Apr 2021 04:02:57 -0700 (PDT) From: Kashyap Desai To: linux-scsi@vger.kernel.org Cc: jejb@linux.ibm.com, martin.petersen@oracle.com, steve.hagan@broadcom.com, peter.rivera@broadcom.com, mpi3mr-linuxdrv.pdl@broadcom.com, Kashyap Desai , sathya.prakash@broadcom.com Subject: [PATCH v3 20/24] mpi3mr: wait for pending IO completions upon detection of VD IO timeout Date: Mon, 19 Apr 2021 16:31:52 +0530 Message-Id: <20210419110156.1786882-21-kashyap.desai@broadcom.com> X-Mailer: git-send-email 2.18.1 In-Reply-To: <20210419110156.1786882-1-kashyap.desai@broadcom.com> References: <20210419110156.1786882-1-kashyap.desai@broadcom.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000c1c82005c0514525" Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org --000000000000c1c82005c0514525 Wait for (default 180 seconds) host IO completion if IO timeout is detected on VDs Signed-off-by: Kashyap Desai Reviewed-by: Hannes Reinecke Reviewed-by: Tomas Henzl Cc: sathya.prakash@broadcom.com --- drivers/scsi/mpi3mr/mpi3mr.h | 1 + drivers/scsi/mpi3mr/mpi3mr_fw.c | 2 ++ drivers/scsi/mpi3mr/mpi3mr_os.c | 53 +++++++++++++++++++++++++++++++++ 3 files changed, 56 insertions(+) diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h index ff3e68a6d0b5..505df0e7b852 100644 --- a/drivers/scsi/mpi3mr/mpi3mr.h +++ b/drivers/scsi/mpi3mr/mpi3mr.h @@ -102,6 +102,7 @@ extern struct list_head mrioc_list; #define MPI3MR_RESET_HOST_IOWAIT_TIMEOUT 5 #define MPI3MR_TSUPDATE_INTERVAL 900 #define MPI3MR_DEFAULT_SHUTDOWN_TIME 120 +#define MPI3MR_RAID_ERRREC_RESET_TIMEOUT 180 #define MPI3MR_WATCHDOG_INTERVAL 1000 /* in milli seconds */ diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c index bb1d2c45e903..488fc3eac9dc 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_fw.c +++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c @@ -3779,6 +3779,8 @@ int mpi3mr_soft_reset_handler(struct mpi3mr_ioc *mrioc, } } + mpi3mr_wait_for_host_io(mrioc, MPI3MR_RESET_HOST_IOWAIT_TIMEOUT); + mpi3mr_ioc_disable_intr(mrioc); if (snapdump) { diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index 56f1e59e86cc..ccee3e7359ec 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -2435,6 +2435,43 @@ static void mpi3mr_print_pending_host_io(struct mpi3mr_ioc *mrioc) mpi3mr_print_scmd, (void *)mrioc); } +/** + * mpi3mr_wait_for_host_io - block for I/Os to complete + * @mrioc: Adapter instance reference + * @timeout: time out in seconds + * Waits for pending I/Os for the given adapter to complete or + * to hit the timeout. + * + * Return: Nothing + */ +void mpi3mr_wait_for_host_io(struct mpi3mr_ioc *mrioc, u32 timeout) +{ + enum mpi3mr_iocstate iocstate; + int i = 0; + + iocstate = mpi3mr_get_iocstate(mrioc); + if (iocstate != MRIOC_STATE_READY) + return; + + if (!mpi3mr_get_fw_pending_ios(mrioc)) + return; + ioc_info(mrioc, + "%s :Waiting for %d seconds prior to reset for %d I/O\n", + __func__, timeout, mpi3mr_get_fw_pending_ios(mrioc)); + + for (i = 0; i < timeout; i++) { + if (!mpi3mr_get_fw_pending_ios(mrioc)) + break; + iocstate = mpi3mr_get_iocstate(mrioc); + if (iocstate != MRIOC_STATE_READY) + break; + msleep(1000); + } + + ioc_info(mrioc, "%s :Pending I/Os after wait is: %d\n", __func__, + mpi3mr_get_fw_pending_ios(mrioc)); +} + /** * mpi3mr_eh_host_reset - Host reset error handling callback * @scmd: SCSI command reference @@ -2449,9 +2486,25 @@ static void mpi3mr_print_pending_host_io(struct mpi3mr_ioc *mrioc) static int mpi3mr_eh_host_reset(struct scsi_cmnd *scmd) { struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host); + struct mpi3mr_stgt_priv_data *stgt_priv_data; + struct mpi3mr_sdev_priv_data *sdev_priv_data; + u8 dev_type = MPI3_DEVICE_DEVFORM_VD; int retval = FAILED, ret; + sdev_priv_data = scmd->device->hostdata; + if (sdev_priv_data && sdev_priv_data->tgt_priv_data) { + stgt_priv_data = sdev_priv_data->tgt_priv_data; + dev_type = stgt_priv_data->dev_type; + } + if (dev_type == MPI3_DEVICE_DEVFORM_VD) { + mpi3mr_wait_for_host_io(mrioc, + MPI3MR_RAID_ERRREC_RESET_TIMEOUT); + if (!mpi3mr_get_fw_pending_ios(mrioc)) { + retval = SUCCESS; + goto out; + } + } mpi3mr_print_pending_host_io(mrioc); ret = mpi3mr_soft_reset_handler(mrioc, MPI3MR_RESET_FROM_EH_HOS, 1); -- 2.18.1 --000000000000c1c82005c0514525 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQcAYJKoZIhvcNAQcCoIIQYTCCEF0CAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3HMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD 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