hi Paul >>>> My questions are >>>> 1. The xhci controller seems not handle the normal TRB for short package. >>>> as you can see the length of event package for normal package is 0. >>>> am I correct? >>>> 2. if above #1 is correct, how xhci controller get the left 0x6f8 data >>>> in original normal package? >>> >>> This looks like a hardware bug to me. Which xHCI controller is this? >> >> Synopsys > > Ouch ;) > >>>> the controller did fire iso in token to get 0x4fc bytes, above >>>> marked "xxxx", and if xhci controller didn't firing the left in tokens >>>> to get 0x6f8 bytes, that mean the data we get from iso-in pipe is not >>>> continuous, right? >>> >>> I would bet that no data was transferred at all, but the controller >>> forgot to set the transfer length correctly for the chained normal TRB. >> >> so you mean the ISO will be sent but the chained normal TRB won't. >> that mean the host only get 0x4fc instead of total 0xbf4 Bytes. >> Am I right? > > No, I'm thinking that no data at all was received. That is what the Isoc > event TRB shows. But from isoc event TRB it shows there did get 0x4fc bytes from device, since the data length of event trb is not 0. > >>> Are you seeing an actual problem with this? If not, maybe the xHCI driver >>> is written in such a way that this does not cause a problem. >> >> I found this problem because when I activate ISO for my webcam, I get >> below message >> "ERROR Transfer event TRB DMA ptr not part of current TD" > > Yes, but does the webcam work? Without the patch that you mentioned > below, you will get these messages, but they shouldn't cause any > functional problem. we will try to eliminate the message and check whether webcam is ok. > > Also, which webcam is this? Maybe I can try to reproduce the problem > here. And normal uvc webcam will have this issue.(But you have to purposely disable "XHCI_SPURIOUS_SUCCESS") > > Which version of the kernel are you using? Please try this with the > latest version (3.16-rc5) to make sure this is not some problem that > has already been fixed. the version I use is 3.8.2. I will try to merge 3.16-rc5 into our system. > >> after tracing the src and checking the event TRB, I found the "TRB >> pointer" in event TRB is pointing to the chained normal TRB. >> And length of Event TRB is 0 but complete code is success. >> >>> >>>> 3. is there any relationship between below patch >>>> https://lkml.org/lkml/2013/6/26/501 >>> >>> I doubt it. >>> >>>> appreciate your help, >>>> >>>> Endpoint 02 Context: >>>> xhci.0: @e52e90c0 (virt) @27f660c0 (dma) 0x000001 - ep_info >>>> xhci.0: @e52e90c4 (virt) @27f660c4 (dma) 0x3fc0228 - ep_info2 >>>> xhci.0: @e52e90c8 (virt) @27f660c8 (dma) 0x2796e001 - deq >>>> xhci.0: @e52e90d0 (virt) @27f660d0 (dma) 0xbf40bf4 - tx_info >>>> xhci.0: @e52e90d4 (virt) @27f660d4 (dma) 0x000000 - rsvd[0] >>>> xhci.0: @e52e90d8 (virt) @27f660d8 (dma) 0x000000 - rsvd[1] >>>> xhci.0: @e52e90dc (virt) @27f660dc (dma) 0x3000000 - rsvd[2] >>>> >>>> ep ring >>>> xhci.0: @000000002796e110 279ccb34 00000000 00000bf4 80021625 >>>> xhci.0: @000000002796e120 279cd728 00000000 00000bf4 80021625 >>>> xhci.0: @000000002796e130 279ce31c 00000000 00000bf4 80021625 >>>> xhci.0: @000000002796e140 279cef10 00000000 00000bf4 80021625 >>>> xhci.0: @000000002796e150 279cfb04 00000000 000404fc 80021415 //xxxxxx >>>> xhci.0: @000000002796e160 279d0000 00000000 000006f8 00000625 //normal >>>> xhci.0: @000000002796e170 279d06f8 00000000 00000bf4 80021625 >>>> >>>> event ring: >>>> xhci.0: @00000000278d1700 2796e140 00000000 0d000bf4 01038001 >>>> xhci.0: @00000000278d1710 2796e150 00000000 0d0004fc 01038001 >>>> xhci.0: @00000000278d1720 2796e160 00000000 01000000 01038001 //event for normal >>>> xhci.0: @00000000278d1730 2796e170 00000000 0d000bf4 01038001 >>>> xhci.0: @00000000278d1740 2796e180 00000000 0d000bf4 01038001 >>> >>> Are these the entire rings, or did you just show a part of them? >> >> Sure. >> I attach both event ring and ep ring at the end of mail. >> > Because all the TRBs have the cycle bit set, which shouldn't happen >> > AFAIK. >> Thanks for your kind help, > > Thanks, I will look at the ring data and see if I see anything suspicious. > > -- > Paul > >> event ring segment: >> platform-xhci.0: @00000000278d1400 2796e240 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1410 2796e250 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1420 2796e260 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1430 2796e270 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1440 2796e280 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1450 2796e290 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1460 2796e2a0 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1470 2796e2b0 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1480 2796e2c0 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1490 2796e2d0 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d14a0 2796e2e0 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d14b0 2796e2f0 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d14c0 2796e300 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d14d0 2796e310 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d14e0 2796e320 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d14f0 2796e330 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1500 2796e340 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1510 2796e350 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1520 2796e360 00000000 0d0004fc 01038000 >> platform-xhci.0: @00000000278d1530 2796e370 00000000 01000000 01038000 >> platform-xhci.0: @00000000278d1540 2796e380 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1550 2796e390 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1560 2796e3a0 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1570 2796e3b0 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1580 2796e3c0 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d1590 2796e3d0 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d15a0 2796e3e0 00000000 0d000bf4 01038000 >> platform-xhci.0: @00000000278d15b0 00000000 00000000 15000000 00009400 >> platform-xhci.0: @00000000278d15c0 2796e000 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d15d0 2796e010 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d15e0 2796e020 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d15f0 2796e030 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1600 2796e040 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1610 2796e050 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1620 2796e060 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1630 2796e070 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1640 2796e080 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1650 2796e090 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1660 2796e0a0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1670 2796e0b0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1680 2796e0c0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1690 2796e0d0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d16a0 2796e0e0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d16b0 2796e0f0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d16c0 2796e100 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d16d0 2796e110 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d16e0 2796e120 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d16f0 2796e130 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1700 2796e140 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1710 2796e150 00000000 0d0004fc 01038001 >> platform-xhci.0: @00000000278d1720 2796e160 00000000 01000000 01038001 >> platform-xhci.0: @00000000278d1730 2796e170 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1740 2796e180 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1750 2796e190 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1760 2796e1a0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1770 2796e1b0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1780 2796e1c0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d1790 2796e1d0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d17a0 2796e1e0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d17b0 2796e1f0 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d17c0 2796e200 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d17d0 2796e210 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d17e0 2796e220 00000000 0d000bf4 01038001 >> platform-xhci.0: @00000000278d17f0 2796e230 00000000 0d000bf4 01038001 >> platform >> platform-xhci.0: @000000002796e000 279c0000 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e010 279c0bf4 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e020 279c17e8 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e030 279c23dc 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e040 279c2fd0 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e050 279c3bc4 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e060 279c47b8 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e070 279c53ac 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e080 279c5fa0 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e090 279c6b94 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e0a0 279c7788 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e0b0 279c837c 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e0c0 279c8f70 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e0d0 279c9b64 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e0e0 279ca758 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e0f0 279cb34c 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e100 279cbf40 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e110 279ccb34 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e120 279cd728 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e130 279ce31c 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e140 279cef10 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e150 279cfb04 00000000 000404fc 80021415 //xxxxxx >> platform-xhci.0: @000000002796e160 279d0000 00000000 000006f8 00000625 //Normal >> platform-xhci.0: @000000002796e170 279d06f8 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e180 279d12ec 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e190 279d1ee0 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e1a0 279d2ad4 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e1b0 279d36c8 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e1c0 279d42bc 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e1d0 279d4eb0 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e1e0 279d5aa4 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e1f0 279d6698 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e200 279d728c 00000000 00000bf4 80021425 >> platform-xhci.0: @000000002796e210 279e0000 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e220 279e0bf4 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e230 279e17e8 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e240 279e23dc 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e250 279e2fd0 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e260 279e3bc4 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e270 279e47b8 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e280 279e53ac 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e290 279e5fa0 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e2a0 279e6b94 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e2b0 279e7788 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e2c0 279e837c 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e2d0 279e8f70 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e2e0 279e9b64 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e2f0 279ea758 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e300 279eb34c 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e310 279ebf40 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e320 279ecb34 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e330 279ed728 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e340 279ee31c 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e350 279eef10 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e360 279efb04 00000000 000404fc 80021415 >> platform-xhci.0: @000000002796e370 279f0000 00000000 000006f8 00000625 >> platform-xhci.0: @000000002796e380 279f06f8 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e390 279f12ec 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e3a0 279f1ee0 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e3b0 279f2ad4 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e3c0 279f36c8 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e3d0 279f42bc 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e3e0 279f4eb0 00000000 00000bf4 80021625 >> platform-xhci.0: @000000002796e3f0 2796e400 00000000 00000000 00001801 >> [ -- 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
