#
# Copyright (c) 2001, 2004, Oracle. All rights reserved.  
#
#  $Id: Hitachi.pm 18-aug-2004.21:03:24 ajdsouza Exp $ 
#
#
# NAME
#	 Hitachi.pm
#
# DESC
#	HItachi Storage subroutines 
#
#
# FUNCTIONS
# sub generateDiskId( \% );
# sub getDiskinfo( \% );
#
# NOTES
#
#
# MODIFIED	(MM/DD/YY)
# ajdsouza      08/18/04 - 
# ajdsouza      08/09/04 - 
# ajdsouza      06/25/04 - storage reporting sources 
# ajdsouza      04/14/04  - 
# ajdsouza      04/08/04 -  storage reporting modules 
# ajdsouza      09/23/02
#
#

package storage::vendor::Hitachi;

require v5.6.1;

use strict;
use warnings;
use locale;

#-----------------------------------------------
# subs defined 
#------------------------------------------------
sub generateDiskId( \% );
sub getDiskinfo( \% );

#---------------------------------------------
# Variables with Global scope
#---------------------------------------------
my %hitachiconfig;

# Hitachi models with a port identifuer in their LUN
$hitachiconfig{models}{withport}="0350|0400|0401|0450|0410|04";

#-----------------------------------------------------------------
# FUNCTIONS : generateDiskId
#
# DESC : Generate a id for a disk to consistently 
# identify the disk
#
#   HITACHI SPECIAL
#
#    For hitachi 12 bytes from offset 36 give the serial number
#    The serial number is in HEX
#    This is to be inteprested as 
#    4 bytes - Model
#    4 bytes  - Array serial number
#    1 byte - Port Id
#    3 Bytes - Device ID
#    If same disk is mounted on two controllers, multipathed 
#    the port number would change
#    So take serial number to be array serial number + device id
#
# ARGUMENTS :
#  referece to a hash of disk information
#
#-----------------------------------------------------------------
sub generateDiskId( \% )
    {
	
	my $diskref = $_[0];
	
	warn " Disk name passed is NULL to generate Hitachi Disk Key \n" and return unless $diskref->{nameinstance};
	
	warn " hitachi serial no is NULL to generate Hitachi Disk Key \n" and return if not $diskref->{sq_hitachi_serial_no};
	
	my ($model,$arrayid,$port,$deviceid)  = ( $diskref->{sq_hitachi_serial_no} =~ /^\s*(....)(....)(.)(...).*/i );
	
	$diskref->{disk_key} = "$diskref->{vendor}-$model-$arrayid-$deviceid" and return if $model =~/^\s*($hitachiconfig{models}{withport})/i;
	
	$diskref->{disk_key} = "$diskref->{vendor}-$model-$arrayid-$port-$deviceid";
	
    }

#------------------------------------------------------------------------------------
# FUNCTION : getDiskinfo
#
#
# DESC
# Add to the hash Hitachi storage system specific disk information  
#
#
# ARGUMENTS:
# Reference to a Hash for the disk with the logical name of the disk
#
#------------------------------------------------------------------------------------
sub getDiskinfo( \% )
    {
	
	my $diskref = $_[0];
	
	warn " Disk name passed is NULL to get Hitachi Disk Information \n" and return unless $diskref->{nameinstance};

	warn " hitachi serial no is NULL to get Hitachi Disk Information \n" and return unless $diskref->{sq_hitachi_serial_no};
	
	(
	 $diskref->{product},
	 $diskref->{storage_system_id},
	 $diskref->{storage_port},
	 $diskref->{storage_disk_device_id}
	)  =( $diskref->{sq_hitachi_serial_no} =~ /^\s*(....)(....)(.)(...).*/i );
	
	# Add the port to the device id, if its a model with a port number in LUN
	$diskref->{storage_disk_device_id} = "$diskref->{storage_port}$diskref->{storage_disk_device_id}" if $diskref->{product} !~/^\s*($hitachiconfig{models}{withport})/i;
	
	# Generate a unique key for the external storage system
	$diskref->{storage_system_key} = "$diskref->{vendor}-$diskref->{product}-$diskref->{storage_system_id}";
	
    }


1;