[Qemu-devel] QEMU only support USB endpoint 02(output) and 81(input)?

[Yu, Xiaoyang]

Hi guys,

 

I found that some USB disks do not work in QEMU.

 

I collected seven types of USB disks, and tested them in QEMU. Four of them can work properly, but other three do not work. I compared their information in /proc/bus/usb/devices, and found that the four “good” disks all use endpoint 02 as output endpoint, and use endpoint 81 as input endpoint, while other three are not.

 

So, is QEMU only support USB endpoint 02(output) and 81(input)?

 

I put the USB information of the seven disks below. The first four disks can work with QEMU, and the last three disks do not work with QEMU.

 

 

USB disks work with QEMU:

=======================================================

Baitangping:

T:  Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  2 Spd=12  MxCh= 0

D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1

P:  Vendor=1043 ProdID=8006 Rev= 1.00

S:  Manufacturer=Generic

S:  Product=Flash Disk

C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA

I:  If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage

E:  Ad=81(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms

E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms

 

Chuan:

T:  Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  4 Spd=12  MxCh= 0

D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1

P:  Vendor=1043 ProdID=8006 Rev= 1.00

S:  Manufacturer=Generic

S:  Product=Flash Disk

S:  SerialNumber=200506211217

C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA

I:  If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage

E:  Ad=81(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms

E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms

 

Meng:

T:  Bus=05 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  7 Spd=12  MxCh= 0

D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1

P:  Vendor=1043 ProdID=8006 Rev= 1.00

S:  Manufacturer=Generic

S:  Product=Flash Disk

S:  SerialNumber=200510172115

C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA

I:  If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=(none)

E:  Ad=81(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms

E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms

 

Kingston:

T:  Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#=  6 Spd=480 MxCh= 0

D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1

P:  Vendor=0930 ProdID=6533 Rev= 1.00

S:  Manufacturer=Kingston

S:  Product=DataTraveler 2.0

C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA

I:  If#= 0 Alt= 0 #EPs= 3 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage

E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms

E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=31875us

E:  Ad=83(I) Atr=03(Int.) MxPS=   8 Ivl=64ms

 

 

USB disks do not work with QEMU

====================================================================

CNDATA:

T:  Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  3 Spd=12  MxCh= 0

D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1

P:  Vendor=0ed1 ProdID=6680 Rev= 1.00

S:  Manufacturer=Generic

S:  Product=Mass Storage Device

C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 50mA

I:  If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage

E:  Ad=01(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms

E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms

 

TH:

T:  Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#=  4 Spd=480 MxCh= 0

D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1

P:  Vendor=0204 ProdID=6025 Rev= 1.00

S:  Manufacturer=USB0612

S:  Product=Flash Disk

S:  SerialNumber=335657409262

C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA

I:  If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage

E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=125us

E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms

 

Intel:

T:  Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#=  7 Spd=480 MxCh= 0

D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1

P:  Vendor=0204 ProdID=6025 Rev= 1.00

C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA

I:  If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage

E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=125us

E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms

 

 

Thanks
Xiaoyang