> -----Original Message----- > From: Roger Quadros [mailto:rogerq@xxxxxx] > Sent: Thursday, September 14, 2017 6:38 AM > To: Chris Welch <Chris.Welch@xxxxxxxxxxxxxxxxxx>; linux-usb@xxxxxxxxxxxxxxx > Subject: Re: xhci_hcd HC died; cleaning up with TUSB7340 and µPD720201 > > Chris, > > > Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y- > tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki > > On 13/09/17 17:26, Chris Welch wrote: > > We are developing a product based on the TI AM5728 EVM. The product > utilizes a TUSB7340 PCIe USB host for additional ports. The TUSB7340 is > detected and setup properly and works OK with low data rate devices. > However, hot plugging a Realtek USB network adapter and doing Ethernet > transfer bandwidth testing using iperf3 causes the TUSB7340 host to be locked > out. The TUSB7340 host appears to no longer communicate and the logging > indicates xhci_hcd 0000:01:00.0: HC died; cleaning up. Same issue occurs with > another USB Ethernet adapter I tried (Asus). > > > > We looked at using another host and found a mini PCIe card that utilizes the > µPD720201 and can be directly installed on the TI AM5728 EVM. The card is > detected properly and we reran the transfer test. The uPD720201 gets locks > out with the same problem. > > > > The AM5728 testing was performed using the TI SD card stock am57xx-evm- > linux-04.00.00.04.img, kernel am57xx-evm 4.9.28-geed43d1050, and it reports > that it is using the TI AM572x EVM Rev A3 device tree. > > > > It shows the following logging when it fails (this is with the TI EVM and > uPD720201). > > > > [ 630.400899] xhci_hcd 0000:01:00.0: xHCI host not responding to stop > endpoint command. > > [ 630.408769] xhci_hcd 0000:01:00.0: Assuming host is dying, halting host. > > [ 630.420849] r8152 2-4:1.0 enp1s0u4: Tx status -108 [ 630.425667] > > r8152 2-4:1.0 enp1s0u4: Tx status -108 [ 630.430483] r8152 2-4:1.0 > > enp1s0u4: Tx status -108 [ 630.435297] r8152 2-4:1.0 enp1s0u4: Tx > > status -108 [ 630.440122] xhci_hcd 0000:01:00.0: HC died; cleaning up > > [ 630.453961] usb 2-4: USB disconnect, device number 2 > > > > The problem appears to be a general driver issue given we get the same > problem with both the TUSB7340 and the µPD720201. > > Can you try to reproduce the issue with the Realtek USB network adapter on > the Native USB host port of AM5727 EVM. That happens to use xhci_hcd driver > as well. > This will help us know if the issue is with the pcie based USB controllers or > elsewhere. > > Also do you have another make of USB network adapter to try on? > The issue appears to be with the PCie based USB host controllers. I have no failures using the native USB ports or ports with subtended USB hubs. We use TUSB8041s on the product as well to expand the native ports. I have also replicated the problem using an Asus Ethernet USB adapter. > > > > I've tried the 4.4.49, 4.12.3 and 4.13.1 kernels and they also fail. > > > > I tried the TI E2E support community and they were unable to provide any > solutions. > > > > Here is a sample session with the TUSB7340: > > > > root@arm:~# !iperf3 > > iperf3 -c 10.14.21.95 -t 6000 > > Connecting to host 10.14.21.95, port 5201 [ 4] local 10.14.21.89 port > > 60978 connected to 10.14.21.95 port 5201 [ ID] Interval Transfer > > Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 14.2 MBytes 119 Mbits/sec 1 > > 1.41 KBytes [ 4] 1.00-2.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes > > [ 4] 2.00-3.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes [ 4] > > 3.00-4.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes [ 4] 4.00-5.00 > > sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes [ 4] 5.00-6.00 sec 0.00 > > Bytes 0.00 bits/sec 0 1.41 KBytes [ 4] 6.00-7.00 sec 0.00 Bytes 0.00 > > bits/sec 0 1.41 KBytes ^C[ 4] 7.00-7.48 sec 0.00 Bytes 0.00 bits/sec 0 > > 1.41 KBytes > > - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval > > Transfer Bandwidth Retr [ 4] 0.00-7.48 sec 14.2 MBytes 15.9 Mbits/sec > > 1 sender [ 4] 0.00-7.48 sec 0.00 Bytes 0.00 bits/sec receiver > > iperf3: interrupt - the client has terminated root@arm:~# [ > > 118.187204] xhci_hcd 0001:07:00.0: xHCI host controller not > > responding, assume dead [ 118.196419] xhci_hcd 0001:07:00.0: HC died; > > cleaning up > > > > Any suggestions on how we can address this problem? > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-usb" > > in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo > > info at http://vger.kernel.org/majordomo-info.html > > > > -- > cheers, > -roger ��.n��������+%������w��{.n�����{���)�� jg��� �����ݢj����G���� ���j:+v���w�m������w�������h�����٥
