https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242128
--- Comment #2 from dar...@dons.net.au ---
Like this?
[maarsy-acq3 7:38] ~> usbconfig -d 0.7 dump_all_desc
ugen0.7: <DisplayLink USB to DVI-19> at usbus0, cfg=0 md=HOST spd=HIGH
(480Mbps) pwr=ON (500mA)
bLength = 0x0012
bDescriptorType = 0x0001
bcdUSB = 0x0200
bDeviceClass = 0x0000 <Probed by interface class>
bDeviceSubClass = 0x0000
bDeviceProtocol = 0x0000
bMaxPacketSize0 = 0x0040
idVendor = 0x17e9
idProduct = 0x0360
bcdDevice = 0x0112
iManufacturer = 0x0001 <DisplayLink>
iProduct = 0x0002 <USB to DVI-19>
iSerialNumber = 0x0003 <169725>
bNumConfigurations = 0x0001
Configuration index 0
bLength = 0x0009
bDescriptorType = 0x0002
wTotalLength = 0x0049
bNumInterfaces = 0x0001
bConfigurationValue = 0x0001
iConfiguration = 0x0000 <no string>
bmAttributes = 0x0080
bMaxPower = 0x00fa
Interface 0
bLength = 0x0009
bDescriptorType = 0x0004
bInterfaceNumber = 0x0000
bAlternateSetting = 0x0000
bNumEndpoints = 0x0003
bInterfaceClass = 0x00ff <Vendor specific>
bInterfaceSubClass = 0x0000
bInterfaceProtocol = 0x0000
iInterface = 0x0000 <no string>
Additional Descriptor
bLength = 0x22
bDescriptorType = 0x5f
bDescriptorSubType = 0x01
RAW dump:
0x00 | 0x22, 0x5f, 0x01, 0x00, 0x20, 0x05, 0x00, 0x01,
0x08 | 0x03, 0x00, 0x04, 0x04, 0x01, 0x00, 0x03, 0xc0,
0x10 | 0x00, 0x02, 0x04, 0xc0, 0x02, 0x24, 0x00, 0x01,
0x18 | 0x04, 0x01, 0x02, 0x01, 0x02, 0x04, 0x00, 0x08,
0x20 | 0x00, 0x00
Endpoint 0
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x0001 <OUT>
bmAttributes = 0x0002 <BULK>
wMaxPacketSize = 0x0200
bInterval = 0x0000
bRefresh = 0x0000
bSynchAddress = 0x0000
Endpoint 1
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x0082 <IN>
bmAttributes = 0x0003 <INTERRUPT>
wMaxPacketSize = 0x0008
bInterval = 0x0004
bRefresh = 0x0000
bSynchAddress = 0x0000
Endpoint 2
bLength = 0x0007
bDescriptorType = 0x0005
bEndpointAddress = 0x000a <OUT>
bmAttributes = 0x0002 <BULK>
wMaxPacketSize = 0x0200
bInterval = 0x0000
bRefresh = 0x0000
bSynchAddress = 0x0000
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