api/Scan: allow to scan a nodes PCI devices

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

PVE/API2/Scan.pm

@@ -46,6 +46,7 @@ __PACKAGE__->register_method ({
 	    { method => 'usb' },
 	    { method => 'zfs' },
 	    { method => 'cifs' },
+	    { method => 'pci' },
 	    ];
 
 	return $res;
@@ -422,4 +423,127 @@ __PACKAGE__->register_method ({
 	return PVE::SysFSTools::scan_usb();
     }});
 
+my $default_class_blacklist = "05;06;08;0b";
+
+__PACKAGE__->register_method ({
+    name => 'pciscan',
+    path => 'pci',
+    method => 'GET',
+    description => "List local PCI devices.",
+    protected => 1,
+    proxyto => "node",
+    permissions => {
+	check => ['perm', '/', ['Sys.Modify']],
+    },
+    parameters => {
+	additionalProperties => 0,
+	properties => {
+	    node => get_standard_option('pve-node'),
+	    'pci-class-blacklist' => {
+		type => 'string',
+		format => 'string-list',
+		default => $default_class_blacklist,
+		optional => 1,
+		description => "A list of blacklisted PCI classes, which will ".
+			       "not be returned. Following are filtered by ".
+			       "default: Memory Controller (05), Bridge (06), ".
+			       "Generic System Peripheral (08) and ".
+			       "Processor (0b).",
+	    },
+	    verbose => {
+		type => 'boolean',
+		default => 1,
+		optional => 1,
+		description => "If disabled, does only print the PCI IDs. "
+			      ."Otherwise, additional information like vendor "
+			      ."and device will be returned.",
+	    },
+	},
+    },
+    returns => {
+	type => 'array',
+	items => {
+	    type => "object",
+	    properties => {
+		id => {
+		    type => 'string',
+		    description => "The PCI ID.",
+		},
+		class => {
+		    type => 'string',
+		    description => 'The PCI Class of the device.',
+		},
+		vendor => {
+		    type => 'string',
+		    description => 'The Vendor ID.',
+		},
+		vendor_name => {
+		    type => 'string',
+		    optional => 1,
+		},
+		device => {
+		    type => 'string',
+		    description => 'The Device ID.',
+		},
+		device_name => {
+		    type => 'string',
+		    optional => 1,
+		},
+		subsystem_vendor => {
+		    type => 'string',
+		    description => 'The Subsystem Vendor ID.',
+		    optional => 1,
+		},
+		subsystem_vendor_name => {
+		    type => 'string',
+		    optional => 1,
+		},
+		subsystem_device => {
+		    type => 'string',
+		    description => 'The Subsystem Device ID.',
+		    optional => 1,
+		},
+		subsystem_device_name => {
+		    type => 'string',
+		    optional => 1,
+		},
+		iommugroup => {
+		    type => 'integer',
+		    description => "The IOMMU group in which the device is in.".
+				   " If no IOMMU group is detected, it is set to -1.",
+		},
+		mdev => {
+		    type => 'boolean',
+		    optional => 1,
+		    description => "If set, marks that the device is capable "
+				  ."of creating mediated devices.",
+		}
+	    },
+	},
+    },
+    code => sub {
+	my ($param) = @_;
+
+	my $blacklist = $param->{'pci-class-blacklist'} // $default_class_blacklist;
+	my $class_regex = join('|', PVE::Tools::split_list($blacklist));
+
+	my $filter;
+
+	if ($class_regex ne '') {
+	    $filter =  sub {
+		my ($pcidevice) = @_;
+
+		if ($pcidevice->{class} =~ m/^0x(?:$class_regex)/) {
+		    return 0;
+		}
+
+		return 1;
+	    };
+	}
+
+	my $verbose = $param->{verbose} // 1;
+
+	return PVE::SysFSTools::lspci($filter, $verbose);
+    }});
+
 1;