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Commit | Line | Data |
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f0765c71 DC |
1 | package PVE::SysFSTools; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | ||
6 | use IO::File; | |
7 | ||
8 | use PVE::Tools qw(file_read_firstline dir_glob_foreach); | |
9 | ||
10 | my $pcisysfs = "/sys/bus/pci"; | |
853fcdef DC |
11 | my $domainregex = "[a-f0-9]{4,}"; |
12 | my $pciregex = "($domainregex):([a-f0-9]{2}):([a-f0-9]{2})\.([a-f0-9])"; | |
f0765c71 | 13 | |
a70972cd DC |
14 | my $parse_pci_ids = sub { |
15 | my $ids = {}; | |
16 | ||
17 | open(my $fh, '<', "/usr/share/misc/pci.ids") | |
18 | or return $ids; | |
19 | ||
20 | my $curvendor; | |
21 | my $curdevice; | |
22 | while (my $line = <$fh>) { | |
23 | if ($line =~ m/^([0-9a-fA-F]{4})\s+(.*)$/) { | |
24 | $curvendor = ($ids->{"0x$1"} = {}); | |
25 | $curvendor->{name} = $2; | |
26 | } elsif ($line =~ m/^\t([0-9a-fA-F]{4})\s+(.*)$/) { | |
27 | $curdevice = ($curvendor->{devices}->{"0x$1"} = {}); | |
28 | $curdevice->{name} = $2; | |
29 | } elsif ($line =~ m/^\t\t([0-9a-fA-F]{4}) ([0-9a-fA-F]{4})\s+(.*)$/) { | |
30 | $curdevice->{subs}->{"0x$1"}->{"0x$2"} = $3; | |
31 | } | |
32 | } | |
f0765c71 | 33 | |
a70972cd DC |
34 | return $ids; |
35 | }; | |
f0765c71 | 36 | |
853fcdef DC |
37 | my $fixup_missing_domain = sub { |
38 | my ($id) = @_; | |
39 | ||
40 | $id = "0000:$id" if $id !~ m/^${domainregex}:/; | |
41 | ||
42 | return $id; | |
43 | }; | |
44 | ||
a70972cd DC |
45 | # returns a list of pci devices |
46 | # | |
47 | # filter is either a string (then it tries to match to the id) | |
48 | # or a sub ref (then it adds the device if the sub returns truthy) | |
49 | # | |
50 | # verbose also returns iommu groups, subvendor/device and the | |
51 | # human readable names from /usr/share/misc/pci.ids | |
639c3030 DC |
52 | # |
53 | # return format: | |
54 | # [ | |
55 | # { | |
56 | # id => '00:00.0', | |
57 | # vendor => '0xabab', | |
58 | # device => '0xefef', | |
59 | # class => '0x012345', | |
60 | # | |
61 | # # optional | |
62 | # iommugroup => '14', | |
63 | # mdev => 1, | |
64 | # vendor_name => 'Foo Inc.', | |
65 | # device_name => 'Bar 9000AF', | |
66 | # subsystem_vendor => '0xacac', | |
67 | # subsystem_device => '0xfefe', | |
68 | # subsystem_vendor_name => 'Foo Europe GmbH', | |
69 | # subsystem_device_name => 'Bar 9001AF OC', | |
70 | # }, | |
71 | # ... | |
72 | # ] | |
73 | # | |
a70972cd DC |
74 | sub lspci { |
75 | my ($filter, $verbose) = @_; | |
b5dacd10 | 76 | |
a70972cd DC |
77 | my $devices = []; |
78 | my $ids = {}; | |
79 | if ($verbose) { | |
80 | $ids = $parse_pci_ids->(); | |
81 | } | |
b5dacd10 | 82 | |
a70972cd DC |
83 | dir_glob_foreach("$pcisysfs/devices", $pciregex, sub { |
84 | my ($fullid, $domain, $bus, $slot, $function) = @_; | |
882eaf6a | 85 | my $id = "$domain:$bus:$slot.$function"; |
a70972cd | 86 | |
882eaf6a | 87 | if (defined($filter) && !ref($filter) && $id !~ m/^(0000:)?\Q$filter\E/) { |
a70972cd DC |
88 | return; # filter ids early |
89 | } | |
90 | ||
91 | my $devdir = "$pcisysfs/devices/$fullid"; | |
92 | ||
93 | my $vendor = file_read_firstline("$devdir/vendor"); | |
94 | my $device = file_read_firstline("$devdir/device"); | |
95 | my $class = file_read_firstline("$devdir/class"); | |
96 | ||
97 | my $res = { | |
98 | id => $id, | |
99 | vendor => $vendor, | |
100 | device => $device, | |
101 | class => $class, | |
102 | }; | |
103 | ||
104 | if (defined($filter) && ref($filter) eq 'CODE' && !$filter->($res)) { | |
105 | return; | |
106 | } | |
107 | ||
108 | if ($verbose) { | |
109 | $res->{iommugroup} = -1; | |
110 | if (-e "$devdir/iommu_group") { | |
111 | my ($iommugroup) = (readlink("$devdir/iommu_group") =~ m/\/(\d+)$/); | |
112 | $res->{iommugroup} = int($iommugroup); | |
113 | } | |
114 | ||
115 | if (-d "$devdir/mdev_supported_types") { | |
116 | $res->{mdev} = 1; | |
117 | } | |
118 | ||
119 | my $device_hash = $ids->{$vendor}->{devices}->{$device} // {}; | |
120 | ||
121 | my $sub_vendor = file_read_firstline("$devdir/subsystem_vendor"); | |
122 | my $sub_device = file_read_firstline("$devdir/subsystem_device"); | |
123 | ||
124 | my $vendor_name = $ids->{$vendor}->{name}; | |
125 | my $device_name = $device_hash->{name}; | |
126 | my $sub_vendor_name = $ids->{$sub_vendor}->{name}; | |
127 | my $sub_device_name = $device_hash->{subs}->{$sub_vendor}->{$sub_device}; | |
128 | ||
129 | $res->{vendor_name} = $vendor_name if defined($vendor_name); | |
130 | $res->{device_name} = $device_name if defined($device_name); | |
131 | $res->{subsystem_vendor} = $sub_vendor if defined($sub_vendor); | |
132 | $res->{subsystem_device} = $sub_device if defined($sub_device); | |
133 | $res->{subsystem_vendor_name} = $sub_vendor_name if defined($sub_vendor_name); | |
134 | $res->{subsystem_device_name} = $sub_device_name if defined($sub_device_name); | |
135 | } | |
136 | ||
137 | push @$devices, $res; | |
f0765c71 DC |
138 | }); |
139 | ||
a70972cd DC |
140 | # Entries should be sorted by ids |
141 | $devices = [ sort { $a->{id} cmp $b->{id} } @$devices ]; | |
f0765c71 DC |
142 | |
143 | return $devices; | |
144 | } | |
145 | ||
639c3030 DC |
146 | # |
147 | # return format: | |
148 | # [ | |
149 | # { | |
150 | # type => 'FooType_1', | |
151 | # description => "a longer description with custom format\nand newlines", | |
152 | # available => 5, | |
153 | # }, | |
154 | # ... | |
155 | # ] | |
156 | # | |
44a4db5b DC |
157 | sub get_mdev_types { |
158 | my ($id) = @_; | |
159 | ||
853fcdef | 160 | $id = $fixup_missing_domain->($id); |
44a4db5b DC |
161 | |
162 | my $types = []; | |
163 | ||
853fcdef | 164 | my $mdev_path = "$pcisysfs/devices/$id/mdev_supported_types"; |
44a4db5b DC |
165 | if (!-d $mdev_path) { |
166 | return $types; | |
167 | } | |
168 | ||
169 | dir_glob_foreach($mdev_path, '[^\.].*', sub { | |
170 | my ($type) = @_; | |
171 | ||
172 | my $type_path = "$mdev_path/$type"; | |
173 | ||
174 | my $available = int(file_read_firstline("$type_path/available_instances")); | |
175 | my $description = PVE::Tools::file_get_contents("$type_path/description"); | |
176 | ||
177 | push @$types, { | |
178 | type => $type, | |
179 | description => $description, | |
180 | available => $available, | |
181 | }; | |
182 | }); | |
183 | ||
184 | return $types; | |
185 | } | |
186 | ||
f0765c71 | 187 | sub check_iommu_support{ |
63075acb | 188 | # we have IOMMU support if /sys/class/iommu/ is populated |
a923104f | 189 | return PVE::Tools::dir_glob_regex('/sys/class/iommu/', "[^\.].*"); |
f0765c71 DC |
190 | } |
191 | ||
192 | sub file_write { | |
193 | my ($filename, $buf) = @_; | |
194 | ||
195 | my $fh = IO::File->new($filename, "w"); | |
196 | return undef if !$fh; | |
197 | ||
198 | my $res = print $fh $buf; | |
199 | ||
200 | $fh->close(); | |
201 | ||
202 | return $res; | |
203 | } | |
204 | ||
205 | sub pci_device_info { | |
aa59b112 | 206 | my ($name, $verbose) = @_; |
f0765c71 DC |
207 | |
208 | my $res; | |
209 | ||
bf94e590 | 210 | return undef if $name !~ m/^${pciregex}$/; |
f0765c71 DC |
211 | my ($domain, $bus, $slot, $func) = ($1, $2, $3, $4); |
212 | ||
aa59b112 DC |
213 | my $devdir = "$pcisysfs/devices/$name"; |
214 | ||
215 | my $irq = file_read_firstline("$devdir/irq"); | |
f0765c71 DC |
216 | return undef if !defined($irq) || $irq !~ m/^\d+$/; |
217 | ||
aa59b112 | 218 | my $vendor = file_read_firstline("$devdir/vendor"); |
f0765c71 DC |
219 | return undef if !defined($vendor) || $vendor !~ s/^0x//; |
220 | ||
aa59b112 | 221 | my $product = file_read_firstline("$devdir/device"); |
f0765c71 DC |
222 | return undef if !defined($product) || $product !~ s/^0x//; |
223 | ||
224 | $res = { | |
225 | name => $name, | |
226 | vendor => $vendor, | |
9d065c72 | 227 | device => $product, |
f0765c71 DC |
228 | domain => $domain, |
229 | bus => $bus, | |
230 | slot => $slot, | |
231 | func => $func, | |
232 | irq => $irq, | |
233 | has_fl_reset => -f "$pcisysfs/devices/$name/reset" || 0, | |
234 | }; | |
235 | ||
aa59b112 DC |
236 | if ($verbose) { |
237 | my $sub_vendor = file_read_firstline("$devdir/subsystem_vendor"); | |
238 | $sub_vendor =~ s/^0x// if defined($sub_vendor); | |
239 | my $sub_device = file_read_firstline("$devdir/subsystem_device"); | |
240 | $sub_device =~ s/^0x// if defined($sub_device); | |
241 | ||
242 | $res->{subsystem_vendor} = $sub_vendor if defined($sub_vendor); | |
243 | $res->{subsystem_device} = $sub_device if defined($sub_device); | |
244 | ||
245 | if (-e "$devdir/iommu_group") { | |
246 | my ($iommugroup) = (readlink("$devdir/iommu_group") =~ m/\/(\d+)$/); | |
247 | $res->{iommugroup} = int($iommugroup); | |
248 | } | |
249 | ||
250 | if (-d "$devdir/mdev_supported_types") { | |
251 | $res->{mdev} = 1; | |
252 | } | |
253 | } | |
254 | ||
f0765c71 DC |
255 | return $res; |
256 | } | |
257 | ||
258 | sub pci_dev_reset { | |
259 | my ($dev) = @_; | |
260 | ||
261 | my $name = $dev->{name}; | |
262 | ||
263 | my $fn = "$pcisysfs/devices/$name/reset"; | |
264 | ||
265 | return file_write($fn, "1"); | |
266 | } | |
267 | ||
268 | sub pci_dev_bind_to_vfio { | |
269 | my ($dev) = @_; | |
270 | ||
271 | my $name = $dev->{name}; | |
272 | ||
273 | my $vfio_basedir = "$pcisysfs/drivers/vfio-pci"; | |
274 | ||
275 | if (!-d $vfio_basedir) { | |
276 | system("/sbin/modprobe vfio-pci >/dev/null 2>/dev/null"); | |
277 | } | |
278 | die "Cannot find vfio-pci module!\n" if !-d $vfio_basedir; | |
279 | ||
280 | my $testdir = "$vfio_basedir/$name"; | |
281 | return 1 if -d $testdir; | |
282 | ||
9d065c72 | 283 | my $data = "$dev->{vendor} $dev->{device}"; |
f0765c71 DC |
284 | return undef if !file_write("$vfio_basedir/new_id", $data); |
285 | ||
286 | my $fn = "$pcisysfs/devices/$name/driver/unbind"; | |
287 | if (!file_write($fn, $name)) { | |
288 | return undef if -f $fn; | |
289 | } | |
290 | ||
291 | $fn = "$vfio_basedir/bind"; | |
292 | if (! -d $testdir) { | |
293 | return undef if !file_write($fn, $name); | |
294 | } | |
295 | ||
296 | return -d $testdir; | |
297 | } | |
298 | ||
299 | sub pci_dev_group_bind_to_vfio { | |
300 | my ($pciid) = @_; | |
301 | ||
302 | my $vfio_basedir = "$pcisysfs/drivers/vfio-pci"; | |
303 | ||
304 | if (!-d $vfio_basedir) { | |
305 | system("/sbin/modprobe vfio-pci >/dev/null 2>/dev/null"); | |
306 | } | |
307 | die "Cannot find vfio-pci module!\n" if !-d $vfio_basedir; | |
308 | ||
853fcdef | 309 | $pciid = $fixup_missing_domain->($pciid); |
882eaf6a | 310 | |
f0765c71 | 311 | # get IOMMU group devices |
882eaf6a | 312 | opendir(my $D, "$pcisysfs/devices/$pciid/iommu_group/devices/") || die "Cannot open iommu_group: $!\n"; |
853fcdef | 313 | my @devs = grep /^${domainregex}:/, readdir($D); |
f0765c71 DC |
314 | closedir($D); |
315 | ||
316 | foreach my $pciid (@devs) { | |
882eaf6a | 317 | $pciid =~ m/^([:\.0-9a-f]+)$/ or die "PCI ID $pciid not valid!\n"; |
f0765c71 | 318 | |
57426c93 TL |
319 | # PCI bridges, switches or root-ports aren't supported and all have a pci_bus dir we can test |
320 | next if (-e "$pcisysfs/devices/$pciid/pci_bus"); | |
f0765c71 DC |
321 | |
322 | my $info = pci_device_info($1); | |
323 | pci_dev_bind_to_vfio($info) || die "Cannot bind $pciid to vfio\n"; | |
324 | } | |
325 | ||
326 | return 1; | |
327 | } | |
328 | ||
44a4db5b DC |
329 | sub pci_create_mdev_device { |
330 | my ($pciid, $uuid, $type) = @_; | |
331 | ||
853fcdef | 332 | $pciid = $fixup_missing_domain->($pciid); |
882eaf6a DC |
333 | |
334 | my $basedir = "$pcisysfs/devices/$pciid"; | |
44a4db5b DC |
335 | my $mdev_dir = "$basedir/mdev_supported_types"; |
336 | ||
337 | die "pci device '$pciid' does not support mediated devices \n" | |
338 | if !-d $mdev_dir; | |
339 | ||
340 | die "pci device '$pciid' has no type '$type'\n" | |
341 | if !-d "$mdev_dir/$type"; | |
342 | ||
343 | if (-d "$basedir/$uuid") { | |
344 | # it already exists, checking type | |
345 | my $typelink = readlink("$basedir/$uuid/mdev_type"); | |
346 | my ($existingtype) = $typelink =~ m|/([^/]+)$|; | |
347 | die "mdev instance '$uuid' already exits, but type is not '$type'\n" | |
348 | if $type ne $existingtype; | |
349 | ||
350 | # instance exists, so use it but warn the user | |
351 | warn "mdev instance '$uuid' already existed, using it.\n"; | |
352 | return undef; | |
353 | } | |
354 | ||
355 | my $instances = file_read_firstline("$mdev_dir/$type/available_instances"); | |
356 | my ($avail) = $instances =~ m/^(\d+)$/; | |
357 | die "pci device '$pciid' has no available instances of '$type'\n" | |
358 | if $avail < 1; | |
359 | ||
360 | die "could not create 'type' for pci devices '$pciid'\n" | |
361 | if !file_write("$mdev_dir/$type/create", $uuid); | |
362 | ||
363 | return undef; | |
364 | } | |
365 | ||
366 | sub pci_cleanup_mdev_device { | |
367 | my ($pciid, $uuid) = @_; | |
368 | ||
853fcdef | 369 | $pciid = $fixup_missing_domain->($pciid); |
882eaf6a DC |
370 | |
371 | my $basedir = "$pcisysfs/devices/$pciid/$uuid"; | |
44a4db5b DC |
372 | |
373 | if (! -e $basedir) { | |
374 | return 1; # no cleanup necessary if it does not exist | |
375 | } | |
376 | ||
377 | return file_write("$basedir/remove", "1"); | |
378 | } | |
379 | ||
380 | # encode the hostpci index and vmid into the uuid | |
381 | sub generate_mdev_uuid { | |
382 | my ($vmid, $index) = @_; | |
383 | ||
384 | my $string = sprintf("%08d-0000-0000-0000-%012d", $index, $vmid); | |
385 | ||
386 | return $string; | |
387 | } | |
388 | ||
6eb61ecd DC |
389 | # idea is from usbutils package (/usr/bin/usb-devices) script |
390 | sub __scan_usb_device { | |
391 | my ($res, $devpath, $parent, $level) = @_; | |
392 | ||
393 | return if ! -d $devpath; | |
394 | return if $level && $devpath !~ m/^.*[-.](\d+)$/; | |
395 | my $port = $level ? int($1 - 1) : 0; | |
396 | ||
397 | my $busnum = int(file_read_firstline("$devpath/busnum")); | |
398 | my $devnum = int(file_read_firstline("$devpath/devnum")); | |
399 | ||
400 | my $d = { | |
401 | port => $port, | |
402 | level => $level, | |
403 | busnum => $busnum, | |
404 | devnum => $devnum, | |
405 | speed => file_read_firstline("$devpath/speed"), | |
406 | class => hex(file_read_firstline("$devpath/bDeviceClass")), | |
407 | vendid => file_read_firstline("$devpath/idVendor"), | |
408 | prodid => file_read_firstline("$devpath/idProduct"), | |
409 | }; | |
410 | ||
411 | if ($level) { | |
412 | my $usbpath = $devpath; | |
413 | $usbpath =~ s|^.*/\d+\-||; | |
414 | $d->{usbpath} = $usbpath; | |
415 | } | |
416 | ||
417 | my $product = file_read_firstline("$devpath/product"); | |
418 | $d->{product} = $product if $product; | |
419 | ||
420 | my $manu = file_read_firstline("$devpath/manufacturer"); | |
421 | $d->{manufacturer} = $manu if $manu; | |
422 | ||
423 | my $serial => file_read_firstline("$devpath/serial"); | |
424 | $d->{serial} = $serial if $serial; | |
425 | ||
426 | push @$res, $d; | |
427 | ||
428 | foreach my $subdev (<$devpath/$busnum-*>) { | |
429 | next if $subdev !~ m|/$busnum-[0-9]+(\.[0-9]+)*$|; | |
430 | __scan_usb_device($res, $subdev, $devnum, $level + 1); | |
431 | } | |
432 | ||
433 | }; | |
434 | ||
435 | sub scan_usb { | |
436 | ||
437 | my $devlist = []; | |
438 | ||
439 | foreach my $device (</sys/bus/usb/devices/usb*>) { | |
440 | __scan_usb_device($devlist, $device, 0, 0); | |
441 | } | |
442 | ||
443 | return $devlist; | |
444 | } | |
445 | ||
f0765c71 | 446 | 1; |