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(PDT) Received: from drv-bst-rhel8.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id b3sm6317581pfv.61.2021.05.11.12.51.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 May 2021 12:51:53 -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 v4 14/24] mpi3mr: add change queue depth support Date: Wed, 12 May 2021 01:24:13 +0530 Message-Id: <20210511195423.2134562-15-kashyap.desai@broadcom.com> X-Mailer: git-send-email 2.18.1 In-Reply-To: <20210511195423.2134562-1-kashyap.desai@broadcom.com> References: <20210511195423.2134562-1-kashyap.desai@broadcom.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000d5a98e05c2133995" Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org --000000000000d5a98e05c2133995 Signed-off-by: Kashyap Desai Reviewed-by: Hannes Reinecke Reviewed-by: Tomas Henzl Reviewed-by: Himanshu Madhani Cc: sathya.prakash@broadcom.com --- drivers/scsi/mpi3mr/mpi3mr.h | 3 +++ drivers/scsi/mpi3mr/mpi3mr_os.c | 30 ++++++++++++++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h index d6aab3b04eff..960943452a7a 100644 --- a/drivers/scsi/mpi3mr/mpi3mr.h +++ b/drivers/scsi/mpi3mr/mpi3mr.h @@ -141,6 +141,9 @@ extern struct list_head mrioc_list; /* Command retry count definitions */ #define MPI3MR_DEV_RMHS_RETRY_COUNT 3 +/* Default target device queue depth */ +#define MPI3MR_DEFAULT_SDEV_QD 32 + /* SGE Flag definition */ #define MPI3MR_SGEFLAGS_SYSTEM_SIMPLE_END_OF_LIST \ (MPI3_SGE_FLAGS_ELEMENT_TYPE_SIMPLE | MPI3_SGE_FLAGS_DLAS_SYSTEM | \ diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index d3eedc2ac410..786128da1b54 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -643,6 +643,33 @@ static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc, return retval; } +/** + * mpi3mr_change_queue_depth- Change QD callback handler + * @sdev: SCSI device reference + * @q_depth: Queue depth + * + * Validate and limit QD and call scsi_change_queue_depth. + * + * Return: return value of scsi_change_queue_depth + */ +static int mpi3mr_change_queue_depth(struct scsi_device *sdev, + int q_depth) +{ + struct scsi_target *starget = scsi_target(sdev); + struct Scsi_Host *shost = dev_to_shost(&starget->dev); + int retval = 0; + + if (!sdev->tagged_supported) + q_depth = 1; + if (q_depth > shost->can_queue) + q_depth = shost->can_queue; + else if (!q_depth) + q_depth = MPI3MR_DEFAULT_SDEV_QD; + retval = scsi_change_queue_depth(sdev, q_depth); + + return retval; +} + /** * mpi3mr_update_sdev - Update SCSI device information * @sdev: SCSI device reference @@ -663,6 +690,7 @@ mpi3mr_update_sdev(struct scsi_device *sdev, void *data) if (!tgtdev) return; + mpi3mr_change_queue_depth(sdev, tgtdev->q_depth); switch (tgtdev->dev_type) { case MPI3_DEVICE_DEVFORM_PCIE: /*The block layer hw sector size = 512*/ @@ -2632,6 +2660,7 @@ static int mpi3mr_slave_configure(struct scsi_device *sdev) if (!tgt_dev) return -ENXIO; + mpi3mr_change_queue_depth(sdev, tgt_dev->q_depth); switch (tgt_dev->dev_type) { case MPI3_DEVICE_DEVFORM_PCIE: /*The block layer hw sector size = 512*/ @@ -2885,6 +2914,7 @@ static struct scsi_host_template mpi3mr_driver_template = { .slave_destroy = mpi3mr_slave_destroy, .scan_finished = mpi3mr_scan_finished, .scan_start = mpi3mr_scan_start, + .change_queue_depth = mpi3mr_change_queue_depth, .eh_device_reset_handler = mpi3mr_eh_dev_reset, .eh_target_reset_handler = mpi3mr_eh_target_reset, .eh_host_reset_handler = mpi3mr_eh_host_reset, -- 2.18.1 --000000000000d5a98e05c2133995 Content-Type: application/pkcs7-signature; name="smime.p7s" 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