+ scsi-megaraid_sas-added-bios_param-in-scsi_host_template.patch added to -mm tree

+ scsi-megaraid_sas-added-bios_param-in-scsi_host_template.patch added to -mm tree

[akpm]

The patch titled
     scsi: megaraid_sas - added bios_param in scsi_host_template
has been added to the -mm tree.  Its filename is
     scsi-megaraid_sas-added-bios_param-in-scsi_host_template.patch

*** Remember to use Documentation/SubmitChecklist when testing your code ***

See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this

------------------------------------------------------
Subject: scsi: megaraid_sas - added bios_param in scsi_host_template
From: Sumant Patro <sumantp@lsil.com>

Added bios_param in scsi_host_template to return disk geometry.

Signed-off-by: Sumant Patro <sumant.patro@lsi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/scsi/megaraid/megaraid_sas.c |   45 +++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff -puN drivers/scsi/megaraid/megaraid_sas.c~scsi-megaraid_sas-added-bios_param-in-scsi_host_template drivers/scsi/megaraid/megaraid_sas.c
--- a/drivers/scsi/megaraid/megaraid_sas.c~scsi-megaraid_sas-added-bios_param-in-scsi_host_template
+++ a/drivers/scsi/megaraid/megaraid_sas.c
@@ -35,6 +35,7 @@
 #include <asm/uaccess.h>
 #include <linux/fs.h>
 #include <linux/compat.h>
+#include <linux/blkdev.h>
 #include <linux/mutex.h>
 
 #include <scsi/scsi.h>
@@ -1015,6 +1016,49 @@ static int megasas_reset_bus_host(struct
 }
 
 /**
+ * megasas_bios_param - Returns disk geometry for a disk
+ * @sdev: 		device handle
+ * @bdev:		block device
+ * @capacity:		drive capacity
+ * @geom:		geometry parameters
+ */
+static int
+megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
+		 sector_t capacity, int geom[])
+{
+	int heads;
+	int sectors;
+	sector_t cylinders;
+	unsigned long tmp;
+	/* Default heads (64) & sectors (32) */
+	heads = 64;
+	sectors = 32;
+
+	tmp = heads * sectors;
+	cylinders = capacity;
+
+	sector_div(cylinders, tmp);
+
+	/*
+	 * Handle extended translation size for logical drives > 1Gb
+	 */
+
+	if (capacity >= 0x200000) {
+		heads = 255;
+		sectors = 63;
+		tmp = heads*sectors;
+		cylinders = capacity;
+		sector_div(cylinders, tmp);
+	}
+
+	geom[0] = heads;
+	geom[1] = sectors;
+	geom[2] = cylinders;
+
+	return 0;
+}
+
+/**
  * megasas_service_aen -	Processes an event notification
  * @instance:			Adapter soft state
  * @cmd:			AEN command completed by the ISR
@@ -1054,6 +1098,7 @@ static struct scsi_host_template megasas
 	.eh_device_reset_handler = megasas_reset_device,
 	.eh_bus_reset_handler = megasas_reset_bus_host,
 	.eh_host_reset_handler = megasas_reset_bus_host,
+	.bios_param = megasas_bios_param,
 	.use_clustering = ENABLE_CLUSTERING,
 };
 
_

Patches currently in -mm which might be from sumantp@lsil.com are

origin.patch
scsi-megaraid_sas-donot-process-cmds-if-hw_crit_error-is-set.patch
scsi-megaraid_sas-added-bios_param-in-scsi_host_template.patch
scsi-megaraid_sas-throttle-io-if-fw-is-busy.patch
scsi-megaraid_sas-replace-pci_alloc_consitent-with-dma_alloc_coherent-in-ioctl-path.patch
scsi-megaraid_sas-return-sync-cache-call-with-success.patch
scsi-megaraid_sas-update-version-and-author-info.patch