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package Util;
#Holds common utility functions for MRW processing.
use strict;
use warnings;
use mrw::Targets;
#Returns the BMC target for a system.
# param[in] $targetObj = The Targets object
sub getBMCTarget
{
my ($targetObj) = @_;
for my $target (keys %{$targetObj->getAllTargets()}) {
if ($targetObj->getType($target) eq "BMC") {
return $target;
}
}
die "Could not find BMC target in the MRW XML\n";
}
#Returns an array of child units based on their Target Type.
# param[in] $targetObj = The Targets object
# param[in] $unitTargetType = The target type of the units to find
# param[in] $chip = The chip target to find the units on
sub getChildUnitsWithTargetType
{
my ($targetObj, $unitTargetType, $chip) = @_;
my @units;
my @children = $targetObj->getAllTargetChildren($chip);
for my $child (@children) {
if ($targetObj->getTargetType($child) eq $unitTargetType) {
push @units, $child;
}
}
return @units;
}
#Returns size of child units based on their Type.
# param[in] $targetObj = The Targets object
# param[in] $type = The type of the units to find
# param[in] $chip = The chip target to find the units on
sub getSizeOfChildUnitsWithType
{
my ($targetObj, $type, $chip) = @_;
my @units;
my @children = $targetObj->getAllTargetChildren($chip);
for my $child (@children) {
if ($targetObj->getType($child) eq $type) {
push @units, $child;
}
}
my $size = @units;
return $size;
}
# Returns OBMC name corresponding to a Target name
# param[in] \@inventory = reference to array of inventory items
# param[in] $targetName = A Target name
sub getObmcName
{
my ($inventory_ref, $targetName) = @_;
my @inventory = @{ $inventory_ref };
for my $item (@inventory)
{
if($item->{TARGET} eq $targetName)
{
return $item->{OBMC_NAME};
}
}
return undef;
}
#Returns the array of all the device paths based on the type.
# param[in] \@inventory = reference to array of inventory items.
# param[in] $targetObj = The Targets object.
# param[in] $type = The target type.
sub getDevicePath
{
my ($inventory_ref, $targetObj, $type) = @_;
my @inventory = @{ $inventory_ref };
my $fruType = "";
my @devices;
for my $item (@inventory)
{
if (!$targetObj->isBadAttribute($item->{TARGET}, "TYPE")) {
$fruType = $targetObj->getAttribute($item->{TARGET}, "TYPE");
if ($fruType eq $type) {
push(@devices,$item->{OBMC_NAME});
}
}
}
return @devices;
}
#Convert the MRW I2C address into the standard 7-bit format
# $addr = the I2C Address
sub adjustI2CAddress
{
my $addr = shift;
#MRW holds the 8 bit value. We need the 7 bit one.
$addr = $addr >> 1;
$addr = sprintf("0x%X", $addr);
$addr = lc $addr;
return $addr;
}
#Return nearest FRU enclosing the input target
# $targets = the Targets object
# $targetName = the target name
sub getEnclosingFru
{
my ($targets, $targetName) = @_;
if (($targetName eq "") || (!defined $targetName))
{
return "";
}
if (!$targets->isBadAttribute($targetName, "RU_TYPE"))
{
my $ruType = $targets->getAttribute($targetName, "RU_TYPE");
if (($ruType eq "FRU") || ($ruType eq "CRU"))
{
return $targetName;
}
}
my $parent = $targets->getTargetParent($targetName);
return getEnclosingFru($targets, $parent);
}
#Convert I2C port number from MRW scheme to Linux numbering scheme
# $port = the I2C port number
sub adjustI2CPort
{
my $port = shift;
return $port - 1;
}
1;
=head1 NAME
Util
=head1 DESCRIPTION
Contains utility functions for the MRW parsers.
=head1 METHODS
=over 4
=item getBMCTarget(C<TargetsObj>)
Returns the target string for the BMC chip. If it can't find one,
it will die. Currently supports single BMC systems.
=item getChildUnitsWithTargetType(C<TargetsObj>, C<TargetType>, C<ChipTarget>)
Returns an array of targets that have target-type C<TargetType>
and are children (any level) of target C<ChipTarget>.
=item getSizeOfChildUnitsWithType(C<TargetsObj>, C<Type>, C<ChipTarget>)
Returns size of targets that have Type C<Type>
and are children (any level) of target C<ChipTarget>.
=item getObmcName(C<InventoryItems>, C<TargetName>)
Returns an OBMC name corresponding to a Target name. Returns
undef if the Target name is not found.
=item getDevicePath(C<InventoryItems>, C<TargetsObj>, C<TargetType>)
Returns an array of all device paths (OBMC names) based on C<TargetType>.
=item adjustI2CAddress(C<I2CAddress>)
Returns C<I2CAddress> converted from MRW format (8-bit) to the standard 7-bit
format.
=item getEnclosingFru(C<TargetsObj>, C<Target>)
Finds the nearest FRU enclosing the input Target.
=item adjustI2CPort(C<I2CPort>)
Returns C<I2CPort> converted from MRW numbering scheme to Linux numbering scheme.
=back
=cut
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