Date: Wed, 26 Aug 2015 08:26:18 +0200 From: Hans Petter Selasky <hps@selasky.org> To: freebsd-arm@FreeBSD.org Subject: Re: DWC OTG TX path optimisation for 11-current Message-ID: <55DD5C0A.2050401@selasky.org> In-Reply-To: <46d0a4441bb.41f6f91d@mail.schwarzes.net> References: <55A7D8CE.4020809@selasky.org> <CAHNYxxMp9jGDbV-5=-cE6daR-O3eN5pdvO1s-=QfX=A9XYqYmA@mail.gmail.com> <55B23276.8090703@selasky.org> <CAHNYxxNc9uB62hHEv1PM9PcsGgUs=zsvNgatqLD0p%2BiiDA3Aiw@mail.gmail.com> <55B73113.2020308@selasky.org> <CAFHCsPVaPZpqXLS7OApa=Xz5VLnLjVpV5dYV8Pn2uHh1Lcz7Tg@mail.gmail.com> <55B8AB76.7030603@selasky.org> <CAFHCsPUMaYEwJsaGUFuw9yZi_5bmraSBsOYpRWvSeuebpXBJUA@mail.gmail.com> <55B8B297.1010008@selasky.org> <CAFHCsPVGLs8j6LAV%2Bg4rP_ueTOd8pUOupYFGvmgC3XGcJC720Q@mail.gmail.com> <20150729154516.GH78154@funkthat.com> <55B8F5EC.2050908@selasky.org> <46ad096c958.1a82a175@mail.schwarzes.net> <55B9C3E2.5040501@selasky.org> <46ae815c7c3.447237c8@mail.schwarzes.net> <46aece00b53.3c1cdc1f@mail.schwarzes.net> <55BB2A5F.9000502@selasky.org> <46baa16c4ce.6efd29ef@mail.schwarzes.net> <55CF31A1.5080205@selasky.org> <46ce372c895.20050775@mail.schwarzes.net> <46d0a4441bb.41f6f91d@mail.schwarzes.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On 08/25/15 21:51, Andreas Schwarz wrote: > On 24.08.15, Andreas Schwarz wrote: > >> With both kernels I was not able to reproduce the initial problem. > > By accident, today I run again into the problem (with r287086). 8( > > Aug 25 20:27:59 pizelot kernel: smsc0: warning: Failed to write register 0x114 > Aug 25 20:45:32 pizelot kernel: smsc0: warning: Failed to read register 0x114 > Aug 25 20:45:32 pizelot kernel: smsc0: warning: MII is busy > Aug 25 20:46:08 pizelot kernel: smsc0: warning: Failed to write register 0x114 > Aug 25 20:46:14 pizelot kernel: smsc0: warning: Failed to read register 0x114 > Aug 25 20:46:14 pizelot kernel: smsc0: warning: MII is busy > Aug 25 20:46:16 pizelot kernel: smsc0: warning: Failed to write register 0x114 > Aug 25 20:46:46 pizelot kernel: smsc0: warning: Failed to read register 0x114 > Aug 25 20:46:46 pizelot kernel: smsc0: warning: MII is busy > [...] > It might seem like some process is using all CPU on core 0, so that USB doesn't get a chance to run. I would suggest maybe moving the DWC OTG fast IRQ handling to core #1. Is it possible you could enter kgdb, and poke around which fast IRQ is doing work there? --HPS
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?55DD5C0A.2050401>