use PVE::Tools qw(file_read_firstline dir_glob_foreach);
my $pcisysfs = "/sys/bus/pci";
-my $pciregex = "([a-f0-9]{4}):([a-f0-9]{2}):([a-f0-9]{2})\.([a-f0-9])";
+my $domainregex = "[a-f0-9]{4,}";
+my $pciregex = "($domainregex):([a-f0-9]{2}):([a-f0-9]{2})\.([a-f0-9])";
+
+my $parse_pci_ids = sub {
+ my $ids = {};
+
+ open(my $fh, '<', "/usr/share/misc/pci.ids")
+ or return $ids;
+
+ my $curvendor;
+ my $curdevice;
+ while (my $line = <$fh>) {
+ if ($line =~ m/^([0-9a-fA-F]{4})\s+(.*)$/) {
+ $curvendor = ($ids->{"0x$1"} = {});
+ $curvendor->{name} = $2;
+ } elsif ($line =~ m/^\t([0-9a-fA-F]{4})\s+(.*)$/) {
+ $curdevice = ($curvendor->{devices}->{"0x$1"} = {});
+ $curdevice->{name} = $2;
+ } elsif ($line =~ m/^\t\t([0-9a-fA-F]{4}) ([0-9a-fA-F]{4})\s+(.*)$/) {
+ $curdevice->{subs}->{"0x$1"}->{"0x$2"} = $3;
+ }
+ }
+
+ return $ids;
+};
+my sub normalize_pci_id {
+ my ($id) = @_;
+ $id = "0000:$id" if $id !~ m/^${domainregex}:/;
+ return $id;
+};
+
+# returns a list of pci devices
+#
+# filter is either a string (then it tries to match to the id)
+# or a sub ref (then it adds the device if the sub returns truthy)
+#
+# verbose also returns iommu groups, subvendor/device and the
+# human readable names from /usr/share/misc/pci.ids
+#
+# return format:
+# [
+# {
+# id => '00:00.0',
+# vendor => '0xabab',
+# device => '0xefef',
+# class => '0x012345',
+#
+# # optional
+# iommugroup => '14',
+# mdev => 1,
+# vendor_name => 'Foo Inc.',
+# device_name => 'Bar 9000AF',
+# subsystem_vendor => '0xacac',
+# subsystem_device => '0xfefe',
+# subsystem_vendor_name => 'Foo Europe GmbH',
+# subsystem_device_name => 'Bar 9001AF OC',
+# },
+# ...
+# ]
+#
sub lspci {
- my ($filter) = @_;
+ my ($filter, $verbose) = @_;
- my $devices = {};
+ my $devices = [];
+ my $ids = {};
+ if ($verbose) {
+ $ids = $parse_pci_ids->();
+ }
dir_glob_foreach("$pcisysfs/devices", $pciregex, sub {
- my (undef, undef, $bus, $slot, $function) = @_;
- my $id = "$bus:$slot";
- return if defined($filter) && $id ne $filter;
- my $res = { id => $id, function => $function};
- push @{$devices->{$id}}, $res;
+ my ($fullid, $domain, $bus, $slot, $function) = @_;
+ my $id = "$domain:$bus:$slot.$function";
+
+ if (defined($filter) && !ref($filter) && $id !~ m/^(0000:)?\Q$filter\E/) {
+ return; # filter ids early
+ }
+
+ my $devdir = "$pcisysfs/devices/$fullid";
+
+ my $vendor = file_read_firstline("$devdir/vendor");
+ my $device = file_read_firstline("$devdir/device");
+ my $class = file_read_firstline("$devdir/class");
+
+ my $res = {
+ id => $id,
+ vendor => $vendor,
+ device => $device,
+ class => $class,
+ };
+
+ if (defined($filter) && ref($filter) eq 'CODE' && !$filter->($res)) {
+ return;
+ }
+
+ if ($verbose) {
+ $res->{iommugroup} = -1;
+ if (-e "$devdir/iommu_group") {
+ my ($iommugroup) = (readlink("$devdir/iommu_group") =~ m/\/(\d+)$/);
+ $res->{iommugroup} = int($iommugroup);
+ }
+
+ if (-d "$devdir/mdev_supported_types") {
+ $res->{mdev} = 1;
+ }
+
+ my $device_hash = $ids->{$vendor}->{devices}->{$device} // {};
+
+ my $sub_vendor = file_read_firstline("$devdir/subsystem_vendor");
+ my $sub_device = file_read_firstline("$devdir/subsystem_device");
+
+ my $vendor_name = $ids->{$vendor}->{name};
+ my $device_name = $device_hash->{name};
+ my $sub_vendor_name = $ids->{$sub_vendor}->{name};
+ my $sub_device_name = $device_hash->{subs}->{$sub_vendor}->{$sub_device};
+
+ $res->{vendor_name} = $vendor_name if defined($vendor_name);
+ $res->{device_name} = $device_name if defined($device_name);
+ $res->{subsystem_vendor} = $sub_vendor if defined($sub_vendor);
+ $res->{subsystem_device} = $sub_device if defined($sub_device);
+ $res->{subsystem_vendor_name} = $sub_vendor_name if defined($sub_vendor_name);
+ $res->{subsystem_device_name} = $sub_device_name if defined($sub_device_name);
+ }
+
+ push @$devices, $res;
});
- # Entries should be sorted by functions.
- foreach my $id (keys %$devices) {
- my $dev = $devices->{$id};
- $devices->{$id} = [ sort { $a->{function} <=> $b->{function} } @$dev ];
- }
+ # Entries should be sorted by ids
+ $devices = [ sort { $a->{id} cmp $b->{id} } @$devices ];
return $devices;
}
+#
+# return format:
+# [
+# {
+# type => 'FooType_1',
+# description => "a longer description with custom format\nand newlines",
+# available => 5,
+# },
+# ...
+# ]
+#
+sub get_mdev_types {
+ my ($id) = @_;
+
+ $id = normalize_pci_id($id);
+
+ my $types = [];
+
+ my $mdev_path = "$pcisysfs/devices/$id/mdev_supported_types";
+ if (!-d $mdev_path) {
+ return $types;
+ }
+
+ dir_glob_foreach($mdev_path, '[^\.].*', sub {
+ my ($type) = @_;
+
+ my $type_path = "$mdev_path/$type";
+
+ my $available = int(file_read_firstline("$type_path/available_instances"));
+ my $description = PVE::Tools::file_get_contents("$type_path/description");
+
+ my $entry = {
+ type => $type,
+ description => $description,
+ available => $available,
+ };
+
+ my $name = file_read_firstline("$type_path/name");
+ $entry->{name} = $name if defined($name);
+
+ push @$types, $entry;
+ });
+
+ return $types;
+}
+
sub check_iommu_support{
# we have IOMMU support if /sys/class/iommu/ is populated
return PVE::Tools::dir_glob_regex('/sys/class/iommu/', "[^\.].*");
}
sub pci_device_info {
- my ($name) = @_;
+ my ($name, $verbose) = @_;
my $res;
return undef if $name !~ m/^${pciregex}$/;
my ($domain, $bus, $slot, $func) = ($1, $2, $3, $4);
- my $irq = file_read_firstline("$pcisysfs/devices/$name/irq");
+ my $devdir = "$pcisysfs/devices/$name";
+
+ my $irq = file_read_firstline("$devdir/irq");
return undef if !defined($irq) || $irq !~ m/^\d+$/;
- my $vendor = file_read_firstline("$pcisysfs/devices/$name/vendor");
+ my $vendor = file_read_firstline("$devdir/vendor");
return undef if !defined($vendor) || $vendor !~ s/^0x//;
- my $product = file_read_firstline("$pcisysfs/devices/$name/device");
+ my $product = file_read_firstline("$devdir/device");
return undef if !defined($product) || $product !~ s/^0x//;
$res = {
name => $name,
vendor => $vendor,
- product => $product,
+ device => $product,
domain => $domain,
bus => $bus,
slot => $slot,
has_fl_reset => -f "$pcisysfs/devices/$name/reset" || 0,
};
+ if ($verbose) {
+ my $sub_vendor = file_read_firstline("$devdir/subsystem_vendor");
+ $sub_vendor =~ s/^0x// if defined($sub_vendor);
+ my $sub_device = file_read_firstline("$devdir/subsystem_device");
+ $sub_device =~ s/^0x// if defined($sub_device);
+
+ $res->{subsystem_vendor} = $sub_vendor if defined($sub_vendor);
+ $res->{subsystem_device} = $sub_device if defined($sub_device);
+
+ if (-e "$devdir/iommu_group") {
+ my ($iommugroup) = (readlink("$devdir/iommu_group") =~ m/\/(\d+)$/);
+ $res->{iommugroup} = int($iommugroup);
+ }
+
+ if (-d "$devdir/mdev_supported_types") {
+ $res->{mdev} = 1;
+ }
+ }
+
return $res;
}
my $testdir = "$vfio_basedir/$name";
return 1 if -d $testdir;
- my $data = "$dev->{vendor} $dev->{product}";
+ my $data = "$dev->{vendor} $dev->{device}";
return undef if !file_write("$vfio_basedir/new_id", $data);
my $fn = "$pcisysfs/devices/$name/driver/unbind";
}
die "Cannot find vfio-pci module!\n" if !-d $vfio_basedir;
+ $pciid = normalize_pci_id($pciid);
+
# get IOMMU group devices
- opendir(my $D, "$pcisysfs/devices/0000:$pciid/iommu_group/devices/") || die "Cannot open iommu_group: $!\n";
- my @devs = grep /^0000:/, readdir($D);
+ opendir(my $D, "$pcisysfs/devices/$pciid/iommu_group/devices/") || die "Cannot open iommu_group: $!\n";
+ my @devs = grep /^${domainregex}:/, readdir($D);
closedir($D);
foreach my $pciid (@devs) {
- $pciid =~ m/^([:\.\da-f]+)$/ or die "PCI ID $pciid not valid!\n";
+ $pciid =~ m/^([:\.0-9a-f]+)$/ or die "PCI ID $pciid not valid!\n";
- # pci bridges, switches or root ports are not supported
- # they have a pci_bus subdirectory so skip them
- next if (-e "$pcisysfs/devices/$pciid/pci_bus");
+ # PCI bridges, switches or root-ports aren't supported and all have a pci_bus dir we can test
+ next if (-e "$pcisysfs/devices/$pciid/pci_bus");
my $info = pci_device_info($1);
pci_dev_bind_to_vfio($info) || die "Cannot bind $pciid to vfio\n";
return 1;
}
+sub pci_create_mdev_device {
+ my ($pciid, $uuid, $type) = @_;
+
+ $pciid = normalize_pci_id($pciid);
+
+ my $basedir = "$pcisysfs/devices/$pciid";
+ my $mdev_dir = "$basedir/mdev_supported_types";
+
+ die "pci device '$pciid' does not support mediated devices \n"
+ if !-d $mdev_dir;
+
+ die "pci device '$pciid' has no type '$type'\n"
+ if !-d "$mdev_dir/$type";
+
+ if (-d "$basedir/$uuid") {
+ # it already exists, checking type
+ my $typelink = readlink("$basedir/$uuid/mdev_type");
+ my ($existingtype) = $typelink =~ m|/([^/]+)$|;
+ die "mdev instance '$uuid' already exits, but type is not '$type'\n"
+ if $type ne $existingtype;
+
+ # instance exists, so use it but warn the user
+ warn "mdev instance '$uuid' already existed, using it.\n";
+ return undef;
+ }
+
+ my $instances = file_read_firstline("$mdev_dir/$type/available_instances");
+ my ($avail) = $instances =~ m/^(\d+)$/;
+ die "pci device '$pciid' has no available instances of '$type'\n"
+ if $avail < 1;
+
+ die "could not create 'type' for pci devices '$pciid'\n"
+ if !file_write("$mdev_dir/$type/create", $uuid);
+
+ return undef;
+}
+
+# encode the hostpci index and vmid into the uuid
+sub generate_mdev_uuid {
+ my ($vmid, $index) = @_;
+
+ my $string = sprintf("%08d-0000-0000-0000-%012d", $index, $vmid);
+
+ return $string;
+}
+
# idea is from usbutils package (/usr/bin/usb-devices) script
sub __scan_usb_device {
my ($res, $devpath, $parent, $level) = @_;
projects / pve-common.git / blobdiff