Date: Wed, 18 May 2016 11:57:31 -0500 From: Karl Denninger <karl@denninger.net> To: freebsd-usb@freebsd.org Subject: Re: Oddity with ugen Message-ID: <694e8b6a-2607-ff4e-58ea-53d544ee4e52@denninger.net> In-Reply-To: <10288d18-6da5-f5e8-e8ec-57d59b32ca7a@selasky.org> References: <b24c5a9a-cb18-c014-75ab-9b923853a70c@denninger.net> <46bd6efe-5335-f659-0b07-5107b0e9a326@selasky.org> <af57a994-2e7a-c0d0-1d84-a333c2b2096b@denninger.net> <b04006da-8b3b-7daa-e8d0-0cea8d1583ed@selasky.org> <8dfad53f-e8a6-68b7-37e2-d5cd95768ceb@denninger.net> <10288d18-6da5-f5e8-e8ec-57d59b32ca7a@selasky.org>
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This is a cryptographically signed message in MIME format. --------------ms050106040908080609090006 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 5/18/2016 11:22, Hans Petter Selasky wrote: > On 05/18/16 17:53, Karl Denninger wrote: >> This is being seen on a Pi2 / 11-Current. >> >> I'm reasonably sure that the Pi2 itself and the base USB code is ok, >> however, because there is another USB device also in use by the same >> software (it emulates a serial port and so attaches on the serial >> driver; it exposes itself as a /dev/cua.... device) which has never >> exhibited repeated frames although it too talks using interrupt mode, >> and also has a packet style of communication, so if it was doing the >> same sort of thing my code would have been yelling about it, >> particularly since that other device also generates sequence numbers o= n >> the packets for use by the software in implementing a callback stack >> (this one doesn't.) > > Hi, > > Is this reproducable on a PC w/ EHCI/OHCI/UHCI/XHCI ? Unknown. Will see if I can find out... the code can be recompiled to run a PC, of course, but this does not show up on my bench, only under actual use load, which makes it a lot of fun to isolate. > > Can you check the USB speed of the two different devices? LOW/HIGH/FULL= This is the only "LOW" device in the system. > > The RPi2 drives most of the USB controller in software, which might > influence some of the timing. Further there is quirk for USB interrupt > endpoints in the DWC OTG driver, but I'm not sure if that is the cause > of the problem. > > What is the exact time between these spurious packets as seen by usbdum= p? > > --HPS Here is a sequence of four of them in a row... 10:20:31.463029 usbus0.5 DONE-INTR-EP=3D00000081,SPD=3DLOW,NFR=3D1,SLEN=3D4,IVAL=3D0,ERR=3D0 frame[0] READ 4 bytes 0000 5A 02 00 4A -- -- -- -- -- -- -- -- -- -- -- -- |Z..J = | flags 0x12 <SHORT_XFER_OK|PROXY_BUFFER|0> status 0xc1021 <OPEN|STARTED|SHORT_XFER_OK|CAN_CANCEL_IMMED|DOING_CALLBACK|0> 10:20:31.463052 usbus0.5 SUBM-INTR-EP=3D00000081,SPD=3DLOW,NFR=3D1,SLEN=3D= 0,IVAL=3D0 frame[0] READ 8 bytes flags 0x12 <SHORT_XFER_OK|PROXY_BUFFER|0> status 0xc1023 <OPEN|TRANSFERRING|STARTED|SHORT_XFER_OK|CAN_CANCEL_IMMED|DOING_CALLBACK|= 0> 10:20:32.073035 usbus0.5 DONE-INTR-EP=3D00000081,SPD=3DLOW,NFR=3D1,SLEN=3D4,IVAL=3D0,ERR=3D0 frame[0] READ 4 bytes 0000 5A 02 00 4A -- -- -- -- -- -- -- -- -- -- -- -- |Z..J = | flags 0x12 <SHORT_XFER_OK|PROXY_BUFFER|0> status 0xc1021 <OPEN|STARTED|SHORT_XFER_OK|CAN_CANCEL_IMMED|DOING_CALLBACK|0> 10:20:32.073076 usbus0.5 SUBM-INTR-EP=3D00000081,SPD=3DLOW,NFR=3D1,SLEN=3D= 0,IVAL=3D0 frame[0] READ 8 bytes flags 0x12 <SHORT_XFER_OK|PROXY_BUFFER|0> status 0xc1023 <OPEN|TRANSFERRING|STARTED|SHORT_XFER_OK|CAN_CANCEL_IMMED|DOING_CALLBACK|= 0> ~610ms 10:20:32.693053 usbus0.5 DONE-INTR-EP=3D00000081,SPD=3DLOW,NFR=3D1,SLEN=3D4,IVAL=3D0,ERR=3D0 frame[0] READ 4 bytes 0000 5A 02 00 4A -- -- -- -- -- -- -- -- -- -- -- -- |Z..J = | flags 0x12 <SHORT_XFER_OK|PROXY_BUFFER|0> status 0xc1021 <OPEN|STARTED|SHORT_XFER_OK|CAN_CANCEL_IMMED|DOING_CALLBACK|0> 10:20:32.693085 usbus0.5 SUBM-INTR-EP=3D00000081,SPD=3DLOW,NFR=3D1,SLEN=3D= 0,IVAL=3D0 frame[0] READ 8 bytes flags 0x12 <SHORT_XFER_OK|PROXY_BUFFER|0> status 0xc1023 <OPEN|TRANSFERRING|STARTED|SHORT_XFER_OK|CAN_CANCEL_IMMED|DOING_CALLBACK|= 0> ~620ms 10:20:33.313048 usbus0.5 DONE-INTR-EP=3D00000081,SPD=3DLOW,NFR=3D1,SLEN=3D4,IVAL=3D0,ERR=3D0 frame[0] READ 4 bytes 0000 5A 02 00 4A -- -- -- -- -- -- -- -- -- -- -- -- |Z..J = | flags 0x12 <SHORT_XFER_OK|PROXY_BUFFER|0> status 0xc1021 <OPEN|STARTED|SHORT_XFER_OK|CAN_CANCEL_IMMED|DOING_CALLBACK|0> 10:20:33.313079 usbus0.5 SUBM-INTR-EP=3D00000081,SPD=3DLOW,NFR=3D1,SLEN=3D= 0,IVAL=3D0 frame[0] READ 8 bytes flags 0x12 <SHORT_XFER_OK|PROXY_BUFFER|0> status 0xc1023 <OPEN|TRANSFERRING|STARTED|SHORT_XFER_OK|CAN_CANCEL_IMMED|DOING_CALLBACK|= 0> ~620ms Rather consistent.... note that the device itself, however, is a power-line (X10) interface and thus the actual timing of a command that can be sent (the bits are clocked during the zero-crossing of each 60hz cycle) is approximately this figure. This is an "orphan" device (X10 CM15) and thus there's zero manufacturer support available for it. --=20 Karl Denninger karl@denninger.net <mailto:karl@denninger.net> /The Market Ticker/ /[S/MIME encrypted email preferred]/ --------------ms050106040908080609090006 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgMFADCABgkqhkiG9w0BBwEAAKCC Bl8wggZbMIIEQ6ADAgECAgEpMA0GCSqGSIb3DQEBCwUAMIGQMQswCQYDVQQGEwJVUzEQMA4G A1UECBMHRmxvcmlkYTESMBAGA1UEBxMJTmljZXZpbGxlMRkwFwYDVQQKExBDdWRhIFN5c3Rl bXMgTExDMRwwGgYDVQQDExNDdWRhIFN5c3RlbXMgTExDIENBMSIwIAYJKoZIhvcNAQkBFhND dWRhIFN5c3RlbXMgTExDIENBMB4XDTE1MDQyMTAyMjE1OVoXDTIwMDQxOTAyMjE1OVowWjEL MAkGA1UEBhMCVVMxEDAOBgNVBAgTB0Zsb3JpZGExGTAXBgNVBAoTEEN1ZGEgU3lzdGVtcyBM TEMxHjAcBgNVBAMTFUthcmwgRGVubmluZ2VyIChPQ1NQKTCCAiIwDQYJKoZIhvcNAQEBBQAD ggIPADCCAgoCggIBALmEWPhAdphrWd4K5VTvE5pxL3blRQPyGF3ApjUjgtavqU1Y8pbI3Byg XDj2/Uz9Si8XVj/kNbKEjkRh5SsNvx3Fc0oQ1uVjyCq7zC/kctF7yLzQbvWnU4grAPZ3IuAp 3/fFxIVaXpxEdKmyZAVDhk9az+IgHH43rdJRIMzxJ5vqQMb+n2EjadVqiGPbtG9aZEImlq7f IYDTnKyToi23PAnkPwwT+q1IkI2DTvf2jzWrhLR5DTX0fUYC0nxlHWbjgpiapyJWtR7K2YQO aevQb/3vN9gSojT2h+cBem7QIj6U69rEYcEDvPyCMXEV9VcXdcmW42LSRsPvZcBHFkWAJqMZ Myiz4kumaP+s+cIDaXitR/szoqDKGSHM4CPAZV9Yh8asvxQL5uDxz5wvLPgS5yS8K/o7zDR5 vNkMCyfYQuR6PAJxVOk5Arqvj9lfP3JSVapwbr01CoWDBkpuJlKfpQIEeC/pcCBKknllbMYq yHBO2TipLyO5Ocd1nhN/nOsO+C+j31lQHfOMRZaPQykXVPWG5BbhWT7ttX4vy5hOW6yJgeT/ o3apynlp1cEavkQRS8uJHoQszF6KIrQMID/JfySWvVQ4ksnfzwB2lRomrdrwnQ4eG/HBS+0l eozwOJNDIBlAP+hLe8A5oWZgooIIK/SulUAsfI6Sgd8dTZTTYmlhAgMBAAGjgfQwgfEwNwYI KwYBBQUHAQEEKzApMCcGCCsGAQUFBzABhhtodHRwOi8vY3VkYXN5c3RlbXMubmV0Ojg4ODgw CQYDVR0TBAIwADARBglghkgBhvhCAQEEBAMCBaAwCwYDVR0PBAQDAgXgMCwGCWCGSAGG+EIB DQQfFh1PcGVuU1NMIEdlbmVyYXRlZCBDZXJ0aWZpY2F0ZTAdBgNVHQ4EFgQUxRyULenJaFwX RtT79aNmIB/u5VkwHwYDVR0jBBgwFoAUJHGbnYV9/N3dvbDKkpQDofrTbTUwHQYDVR0RBBYw FIESa2FybEBkZW5uaW5nZXIubmV0MA0GCSqGSIb3DQEBCwUAA4ICAQBPf3cYtmKowmGIYsm6 eBinJu7QVWvxi1vqnBz3KE+HapqoIZS8/PolB/hwiY0UAE1RsjBJ7yEjihVRwummSBvkoOyf G30uPn4yg4vbJkR9lTz8d21fPshWETa6DBh2jx2Qf13LZpr3Pj2fTtlu6xMYKzg7cSDgd2bO sJGH/rcvva9Spkx5Vfq0RyOrYph9boshRN3D4tbWgBAcX9POdXCVfJONDxhfBuPHsJ6vEmPb An+XL5Yl26XYFPiODQ+Qbk44Ot1kt9s7oS3dVUrh92Qv0G3J3DF+Vt6C15nED+f+bk4gScu+ JHT7RjEmfa18GT8DcT//D1zEke1Ymhb41JH+GyZchDRWtjxsS5OBFMzrju7d264zJUFtX7iJ 3xvpKN7VcZKNtB6dLShj3v/XDsQVQWXmR/1YKWZ93C3LpRs2Y5nYdn6gEOpL/WfQFThtfnat HNc7fNs5vjotaYpBl5H8+VCautKbGOs219uQbhGZLYTv6okuKcY8W+4EJEtK0xB08vqr9Jd0 FS9MGjQE++GWo+5eQxFt6nUENHbVYnsr6bYPQsZH0CRNycgTG9MwY/UIXOf4W034UpR82TBG 1LiMsYfb8ahQJhs3wdf1nzipIjRwoZKT1vGXh/cj3gwSr64GfenURBxaFZA5O1acOZUjPrRT n3ci4McYW/0WVVA3lDGCBRMwggUPAgEBMIGWMIGQMQswCQYDVQQGEwJVUzEQMA4GA1UECBMH RmxvcmlkYTESMBAGA1UEBxMJTmljZXZpbGxlMRkwFwYDVQQKExBDdWRhIFN5c3RlbXMgTExD MRwwGgYDVQQDExNDdWRhIFN5c3RlbXMgTExDIENBMSIwIAYJKoZIhvcNAQkBFhNDdWRhIFN5 c3RlbXMgTExDIENBAgEpMA0GCWCGSAFlAwQCAwUAoIICTTAYBgkqhkiG9w0BCQMxCwYJKoZI hvcNAQcBMBwGCSqGSIb3DQEJBTEPFw0xNjA1MTgxNjU3MzFaME8GCSqGSIb3DQEJBDFCBEB6 rxJB1aCcVMY8XQM3YLF0Bf4mIDnswLtCQ+HtV5FlFnt1zNqe0hPcP2JaWACbOFfW+EuA5sAb t4c4bfoXdhEFMGwGCSqGSIb3DQEJDzFfMF0wCwYJYIZIAWUDBAEqMAsGCWCGSAFlAwQBAjAK BggqhkiG9w0DBzAOBggqhkiG9w0DAgICAIAwDQYIKoZIhvcNAwICAUAwBwYFKw4DAgcwDQYI KoZIhvcNAwICASgwgacGCSsGAQQBgjcQBDGBmTCBljCBkDELMAkGA1UEBhMCVVMxEDAOBgNV BAgTB0Zsb3JpZGExEjAQBgNVBAcTCU5pY2V2aWxsZTEZMBcGA1UEChMQQ3VkYSBTeXN0ZW1z IExMQzEcMBoGA1UEAxMTQ3VkYSBTeXN0ZW1zIExMQyBDQTEiMCAGCSqGSIb3DQEJARYTQ3Vk YSBTeXN0ZW1zIExMQyBDQQIBKTCBqQYLKoZIhvcNAQkQAgsxgZmggZYwgZAxCzAJBgNVBAYT AlVTMRAwDgYDVQQIEwdGbG9yaWRhMRIwEAYDVQQHEwlOaWNldmlsbGUxGTAXBgNVBAoTEEN1 ZGEgU3lzdGVtcyBMTEMxHDAaBgNVBAMTE0N1ZGEgU3lzdGVtcyBMTEMgQ0ExIjAgBgkqhkiG 9w0BCQEWE0N1ZGEgU3lzdGVtcyBMTEMgQ0ECASkwDQYJKoZIhvcNAQEBBQAEggIATBXNTMO3 qVE/m4F3zP8x1+sC4mvUJrTSH9j5HcgNBjQvCgMiMIV0cc9S2mQ4OJsIdx+bWe8FupYmYFrQ RtXjrbRBlhAbqkgr0sScYFwlVKivwlrHVAoMjTeaagXAeLpncSN3MxKjVoDFJZNpYLdTkfeP OiUQ90hX8ue06bDuYLJDC8oyIkPWrKGBCThULoyGBa9ajcYg4kAy5ZZKkCozrqXyrMcwUXkt OLjaz8X1m0dBeHBMYKgJy6yFFOK4AoUjTxChtehx4VkrGF4uIjD+3BEdZQHChPstEb7z2fIN powLnXn0OxedsyumpJSVjDm3j8gD5L4gRqqNGYDcTAf/6wBuOgTArUvhYV2EUK/Xr1s6Rn9D hIky///+d6UUSnOQBUftpyWtEjp4gMLSsjCDqFPw93CngYzoUdWTjFNYQpki1JvbWapxmVFv xYBAs5RyU4O3aMKzeeCjjMLWquU8p9swHo7/ewQYTJyG1cKUAuB+Ds/J+uxa6fsKTkp1U3C6 3bMHD1BJv6WwnXisun8ou8UTaUSXfmlKFPYwHswX/a8/FxkTwIf/vXbCL7uuGTjAOny5xsBd issqvTH/8fvlV0XKOnuqMdM3RAupcqAxSxcuzxcwsurBeR1ndk01029CCxJU4FUaCfGx1Nma ZyNPh+zZYNa6l9f5NJ2ogzCSO6oAAAAAAAA= --------------ms050106040908080609090006--
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