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Hello,

 

After looking into the proposed patch, I think it = is reasonable to add enhanced error handling for such USB device that will = fail the 2nd Device Descriptor request.

 

The flow of the current proposal is:

1. First Port Reset

2. First Device Descriptor Request for bMaxPacketS= ize0

3. Second Port Reset. add extra reset

4. Set USB address

5. Second Device Descriptor Request

 

For the above flow, I have a concern that a mandat= ory 2nd port reset may impact the performance during USB device = enumeration.

So how about:

1. First Port Reset

2. First Device Descriptor Request for bMaxPacketS= ize0

3. Set USB address

4. Second Device Descriptor Request

5a. If the second descriptor request succeeds, the= process just go on.

5b. If the second request fails:=

  5b-1). Port Reset

  5b-2). Set USB address

  5b-3). Request the descriptor again

  5b-4a). If the request succeeds, the proces= s just go on.

  5b-4b). If the request still fails, the enu= meration of the device fails.

 

Also, could you help to file a Bugzilla tracker at https://bugzilla.tianocore.org= /?

Please help to described the issue met in the trac= ker, thanks in advance.

 

Best Regards,

Hao Wu

 

From: devel@edk2.groups.io <deve= l@edk2.groups.io> On Behalf Of Feng Libo
Sent: Thursday, August 27, 2020 9:07 AM
To: =B7=E1= =C1=A2=B2=A8 <lbfeng@zd-tech.com.cn>
Cc: Jiang, Guomin <guomin.jiang@intel.com>; devel@edk2.groups= .io; jeremy.linton@arm.com; Wu, Hao A <hao.a.wu@intel.com>; Ni, Ray &= lt;ray.ni@intel.com>; =D5=C5=B3=AC= <czhang@zd-tech.com.cn>
Subject: Re: [edk2-devel] [PATCH] MdeModulePkg/UsbBusDxe: some USB = PenDisk fails enumeration.

 

Hello, 

 

How about the progress of the Patch Revi= ew?

 

Thanks

 

--

Best Regards

 

Feng Libo

ZD Technology (Beijing) Co., Ltd


=B7=A2= =BC=FE=C8=CB=A3=BA"=B7=E1=C1=A2=B2=A8&quo= t; <lbfeng@zd-tech.com.cn>= ;
=B7=A2= =CB=CD=C8=D5=C6=DA=A3=BA2020-08-13 10:49:33
=CA=D5= =BC=FE=C8=CB=A3=BA"Jiang, Guomin" <guomin.jiang@intel.com>
=B3=AD= =CB=CD=C8=CB=A3=BA"devel@edk2.groups.io" <devel@edk2.groups.io>,"jeremy.linton@arm.com" <jeremy.linton@arm.com>= ;,"Wu, Hao A" <hao.a.wu@= intel.com>,"Ni, Ray" <ray.ni@intel.com>,"=D5=C5=B3=AC" <czhang@zd-tech.com.cn>= ;
=D6=F7= =CC=E2=A3=BARe:RE: [edk2-devel] [PATCH] MdeModulePkg/Usb= BusDxe: some USB PenDisk fails enumeration.

Hello, Mr. Jiang,

 

Most USB PenDisk work fine with the orig= inal enumeration sequence. A few can't.

 

In Microsoft Post, they explained the ca= use :

In the early days of USB some USB devices would become co= nfused by a second request for the Device Descriptor   To = allow these devices to enumerate successfully it was necessary to reset the= port between the first and second requests for the Device Descriptor.

 

In our experience, only three Pendisk wi= th Innostor USB controller chip (VID=3D0x= 1F75, PID=3D0x917, USB3.1) fail the enumeration. We can only observed the Pendi= sk not responding the second Device Descriptor Request for a full Descripto= r. The first Device Descriptor Request could impact some Pendisk or as Micr= osoft said "confuse".  

 

So, We add a second port reset after the= MaxPacketSize0 request. and this second reset can clear the address that i= s already assigned. Then, we move the MaxPacketSize request before the address assignation.

 

That is all patch.

 

Furthermore, the USB Spec states the Max= PacketSize Request could be read through the default Pipe, the address 0. S= o I think it implies the MaxPacketSize Request should be prior to the address assignation, just as the enumeration seque= nce in the Microsoft Post.

 

Thanks

 

--

Best Regards

 

Feng Libo

ZD Technology (Beijing) Co., Ltd


=B7=A2= =BC=FE=C8=CB=A3=BA"Jiang, Guomin" <guomin.jiang@intel.com>
=B7=A2= =CB=CD=C8=D5=C6=DA=A3=BA2020-08-12 16:03:42
=CA=D5= =BC=FE=C8=CB=A3=BA"devel@edk2.groups.io" <devel@edk2.groups.io>,"Jiang, Guomin" <guomin.jiang@i= ntel.com>,"lbfeng@zd-t= ech.com.cn" <lbfeng@zd= -tech.com.cn>
=B3=AD= =CB=CD=C8=CB=A3=BA"jeremy.linton@arm.com" <jeremy.linton@arm.com>,"Wu, Hao A" <hao.a.wu@intel.com<= /a>>,"Ni, Ray" <ray.ni@= intel.com>
=D6=F7= =CC=E2=A3=BARE: [edk2-devel] [PATCH] MdeModulePkg/UsbBus= Dxe: some USB PenDisk fails enumeration.

Hi Libo,

 

I review the USB Spec 2.0= and have some confusion when check the spec as below:

From the USB 2.0 spec:<= /span>

 

Section 5.5.3 Control Transfer Packet Size Constr= aints

...

In order to determine the maximum packet size for= the Default Control Pipe, the USB System Software

reads the device descriptor. The host will read = the first eight bytes of the device descriptor. The device

always res= ponds with at least these initial bytes in a single packet. After the host reads the initial part of the

device des= criptor, it is guaranteed to have read this default pipe=A1=AFs wMaxPacketSize field (byte 7 of the

device des= criptor). It will then allow the correct size for all subsequent transactions. For all other con= trol

endpoints, the maximum data payload size is known= after configuration so that the USB System Software

can ensure that no data payload will be sent to t= he endpoint that is larger than the supported size.

...

 

Also,

Section 9.1.2 Bus Enumeration

...

3. Now that the host knows the port to which the = new device has been attached, the host then waits for at

least 100 ms to allow completion of an insertion = process and for power at the device to become stable.

The host then issues a port enable and reset comm= and to that port. Refer to Section 7.1.7.5 for

sequence of events and timings of connection thro= ugh device reset.

4. The hub performs the required reset processing= for that port (see Section 11.5.1.5). When the reset

signal is released, the port has been enabled. Th= e USB device is now in the Default state and can draw

no more than 100 mA from VBUS. All of its registe= rs and state have been reset and it answers to the

default address.=

5. The host assigns a unique address to the USB d= evice, moving the device to the Address state.

6. Before = the USB device receives a unique address, its Default Control Pipe is still accessible via the=

default ad= dress. The host reads the device descriptor to determine what actual maximum data payload<= /p>

size this = USB device=A1=AFs default pipe can use.

7. The host reads the configuration information f= rom the device by reading each configuration zero to

n-1, where n is the number of configurations. Thi= s process may take several milliseconds to complete.

...

 

It seem that the original behavior follow the spec, = but I don=A1=AFt know why the device will not response and must reset it.

 

I notice that  you obtain the patch from https://techcommunity.microsoft.com/t5/micr= osoft-usb-blog/how-does-usb-stack-enumerate-a-device/ba-p/270685#:~:text=3D= %20How%20does%20USB%20stack%20enumerate%20a%20device%3F,a%20request%20for%2= 0the%20USB%20Device...%20More%20.

 

Do you know the device be= havior from the device side when the issue happened?=

 

Thanks.

Guomin

 

+Hao, Ray,

 

Hi Libo, thanks for your = explanation.

 

So I think the patch is i= mprovement for current logic.

 

Hi Hao and Ray,

 

Can you give some comment= s for the change.

 

Hi Jeremy,

 

It may be helpful for the= ASSERT issue https://edk2.groups.io/g/devel/message/62651,can you try it?<= /o:p>

 

Best Regards

Guomin

From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Feng Libo
Sent: Tuesday, August 11, 2020 5:50 PM
To: Jiang, Guomin <guo= min.jiang@intel.com>
Cc: devel@edk2.groups.io; jeremy.linton@arm.com
Subject: Re: [edk2-devel] [PATCH] MdeModulePkg/UsbBusDxe: some USB = PenDisk fails enumeration.

 

Hello, Mr. Jiang,

 

Thank for the review.

 

The original enumeration steps in the function of UsbE= numerateNewDev of file UsbEnumer.c: 1 reset the port, 2 set the usb device address, 3 get the Max Packet Size, 4 get the full d= evice descriptor. However, when plugging a USB PenDisk with Innostor USB

controller chip (VID=3D0x1F75, PID=3D0x917, USB3= .1), the fourth step always fails, trace as below:

 

=3D=3D=3D=3D=3D=3D=3D=3D<= /o:p>

XhcCheckUrbResult: TRANSACTION_ERROR! Completeco= de =3D 4 XhcControlTransfer: error - Device Error, transfer - 40 UsbGetOneConfig: failed to get full descript Device Error U= sbBuildDescTable: failed to get configure (index 0) UsbEnumerateNewDev: fai= led to build descriptor table - Device Error

=3D=3D=3D=3D=3D=3D=3D

 

The host controller need to get the full device descri= ptor, but this moment, the Pendisk device doesn't response any more. Then timeout. and UsbEnumerateNewDev complains : faile= d to build descriptor.

 

We have three Pendisks from different manufacturers, a= ll with Innostor USB controller chip. they all can't be enumerated all. And we observed th= e problem on both Huawei KunPeng(=BB=AA=CE=AA=F6=EF=C5=F4=A3=A9and Loognson=A3=A8=C1=FA=D0=BE=A3=A9platforms.

 

The three Pendisks always fail the USB enumerati= on. Other USB 2.0 and USB 3.0 on hand can work well.=

 

With the patch, the three pendisks and other pen= disks can all work well.

 

THanks

 

--

Best Regards

 

Feng Libo

ZD Technology (Beijing) Co., Ltd


=B7=A2= =BC=FE=C8=CB=A3=BA"Jiang, Guomin" <guomin.jiang@intel.com>
=B7=A2= =CB=CD=C8=D5=C6=DA=A3=BA2020-08-11 08:21:10
=CA=D5= =BC=FE=C8=CB=A3=BA"devel@edk2.groups.io" <devel@edk2.groups.io>,"Jiang, Guomin" <guomin.jiang@i= ntel.com>,"lbfeng@zd-t= ech.com.cn" <lbfeng@zd= -tech.com.cn>
=B3=AD= =CB=CD=C8=CB=A3=BA"jeremy.linton@arm.com" <jeremy.linton@arm.com>
=D6=F7= =CC=E2=A3=BARE: [edk2-devel] [PATCH] MdeModulePkg/UsbBus= Dxe: some USB PenDisk fails enumeration.

+Jeremy,

 

I review the patch and think it is reasonable, but I w= ant to know some more detail information

  1. Can you provide the detail debug log about USB?
    2. <= span style=3D"font-size:10.5pt;font-family:"Arial",sans-serif">Th= e symptom always can be seen or have fail rate?

 

Best Regards

Guomin

From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Guomin Jiang
Sent: Thursday, August 6, 2020 12:29 PM
To: devel@edk2.groups.io; lbfeng@zd-tech.com.cn
Subject: Re: [edk2-devel] [PATCH] MdeModulePkg/UsbBusDxe: some USB = PenDisk fails enumeration.

 

I will review it by next weekend(8/14).

 

Thanks.

From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Feng Libo
Sent: Thursday, August 6, 2020 9:25 AM
To: Feng Libo <lbfeng@z= d-tech.com.cn>; devel@edk2.groups.io
Subject: Re: [edk2-devel] [PATCH] MdeModulePkg/UsbBusDxe: some USB = PenDisk fails enumeration.

 

Hello, 

could anyone review this PATCH?

We encountered the USB enumeration problem and the patch is based on the M= icrosoft post as below.

https://techcommunity.microsoft.com/t5/microsoft-usb-blog/how= -does-usb-stack-enumerate-a-device/ba-p/270685#:~:text=3D%20How%20does%20US= B%20stack%20enumerate%20a%20device%3F,a%20request%20for%20the%20USB%20Devic= e...%20More%20

Thanks

Best Regards

Feng Libo

--_000_BN8PR11MB3666F2E445E0760C13FB59C3CA520BN8PR11MB3666namp_--