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Tue, 22 Dec 2020 02:12:55 -0800 (PST) Received: from drv-bst-rhel8.static.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id p16sm19148624pju.47.2020.12.22.02.12.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Dec 2020 02:12:55 -0800 (PST) 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 12/24] mpi3mr: add bios_param shost template hook Date: Tue, 22 Dec 2020 15:41:44 +0530 Message-Id: <20201222101156.98308-13-kashyap.desai@broadcom.com> X-Mailer: git-send-email 2.18.1 In-Reply-To: <20201222101156.98308-1-kashyap.desai@broadcom.com> References: <20201222101156.98308-1-kashyap.desai@broadcom.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="00000000000084957005b70ad1b5" Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org --00000000000084957005b70ad1b5 Content-Type: text/plain; charset="US-ASCII" Signed-off-by: Kashyap Desai Cc: sathya.prakash@broadcom.com --- drivers/scsi/mpi3mr/mpi3mr_os.c | 40 +++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index 4d94352a4d48..7e0eacf45d84 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -2078,6 +2078,45 @@ static int mpi3mr_build_sg_scmd(struct mpi3mr_ioc *mrioc, return ret; } +/** + * mpi3mr_bios_param - BIOS param callback + * @sdev: SCSI device reference + * @bdev: Block device reference + * @capacity: Capacity in logical sectors + * @params: Parameter array + * + * Just the parameters with heads/secots/cylinders. + * + * Return: 0 always + */ +static int mpi3mr_bios_param(struct scsi_device *sdev, + struct block_device *bdev, sector_t capacity, int params[]) +{ + int heads; + int sectors; + sector_t cylinders; + ulong dummy; + + heads = 64; + sectors = 32; + + dummy = heads * sectors; + cylinders = capacity; + sector_div(cylinders, dummy); + + if ((ulong)capacity >= 0x200000) { + heads = 255; + sectors = 63; + dummy = heads * sectors; + cylinders = capacity; + sector_div(cylinders, dummy); + } + + params[0] = heads; + params[1] = sectors; + params[2] = cylinders; + return 0; +} /** * mpi3mr_map_queues - Map queues callback handler @@ -2511,6 +2550,7 @@ static struct scsi_host_template mpi3mr_driver_template = { .slave_destroy = mpi3mr_slave_destroy, .scan_finished = mpi3mr_scan_finished, .scan_start = mpi3mr_scan_start, + .bios_param = mpi3mr_bios_param, .map_queues = mpi3mr_map_queues, .no_write_same = 1, .can_queue = 1, -- 2.18.1 -- This electronic communication and the information and any files transmitted with it, or attached to it, are confidential and are intended solely for the use of the individual or entity to whom it is addressed and may contain information that is confidential, legally privileged, protected by privacy laws, or otherwise restricted from disclosure to anyone else. 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