Date: Fri, 4 Mar 2016 14:17:14 +0200 From: Stanislav Galabov <sgalabov@gmail.com> To: Michael Zhilin <mizhka@gmail.com> Cc: Adrian Chadd <adrian.chadd@gmail.com>, "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org> Subject: Re: [BCM4718] Broken interrupts Message-ID: <CANiSyhSyzGVaHjoiptpTcgrditLa3Cyeo_HhBAzx6w_iRP=rYg@mail.gmail.com> In-Reply-To: <CAF19XBLS467HY9nzDT54Kxa=ZxvEvLY%2BTpDYL-RQzVEM1JxfcQ@mail.gmail.com> References: <CAF19XBKR2qz-oWKzNmOx-RjiOJxoz%2B=heUm8bg9ijzY6Oz-SLw@mail.gmail.com> <CAJ-Vmo=ObijfE5pf0gojvi01qCpRH4N8Y1F2VCjECmp6JNDLkg@mail.gmail.com> <CAF19XBLS467HY9nzDT54Kxa=ZxvEvLY%2BTpDYL-RQzVEM1JxfcQ@mail.gmail.com>
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Hi Michael, If I understand correctly the goal is to use INTRNG for MIPS? If so, I didn't notice 'options MIPS_INTRNG' anywhere in your kernel config files... Please try to add this to your sys/mips/bcm471x/std.bcm471x for example and let us know how this goes. Best wishes, Stanislav On Fri, Mar 4, 2016 at 1:19 PM, Michael Zhilin <mizhka@gmail.com> wrote: > Hi Adrian! > > Yes, KDB works. And yes, (today's finding) something is silly that force > make IRQ5 endless. After processing of previous request, next request is > starting. According to mips docs found in google, IRQ5 must be triggered > only if count == compare. In my case, count increments on 0x20000 roughly, > compare is constant. There is another finding: cause register is always > 0x8000, even after call mips_wr_compare(). I suppose that this is possible > reason of infinite IRQ5 requests, but still don't know how to fix it... > > Thx, > Michael > > On Fri, Mar 4, 2016 at 11:56 AM, Adrian Chadd <adrian.chadd@gmail.com> > wrote: > > > hm, does kdb work (ie ,break to debugger at that point), or is the system > > hosed? > > > > is it something silly like it getting stuck servicing interrupts > > because they're not being correctly ACKed? > > > > > > > > -a > > > > > > On 3 March 2016 at 12:22, Michael Zhilin <mizhka@gmail.com> wrote: > > > Hi, > > > > > > I'm trying to load FreeBSD kernel on Broadcom MIPS router (ASUS > RT-N16). > > > Here is actual dmesg: http://pastebin.com/AtEz6kc9 . But my actual > > problem > > > is broken interrupts. After enabling of interrupts in > > > autoconf.c:configure_final the MipsException code is called, it works > > fine > > > (including INTRNG), but cpu doesn't return to main thread (suprise!). > > > > > > I can see printf from clockintr, i.e. there are regular timer requests. > > But > > > there is no printf from main thread (autoconf.c) after enabling of > > > interrupts. > > > > > > Also I've tried to simplify MipsException to avoid any issue with > > > saving/restoring registers: > > > mfc0 k0, MIPS_COP_0_EXC_PC > > > rfe > > > jr k0 > > > > > > but still there is no return to main thread. > > > > > > I'm not familiar with JTAG and have no JTAG adapter for debugging. :( > To > > be > > > honest, I've lost hope. > > > > > > What could possibly be wrong? Here is github branch for reference: > > > https://github.com/Cka3o4Huk/freebsd/tree/user/mizhka/bcm471x > > > > > > Thank you in advance, > > > Michael > > > _______________________________________________ > > > freebsd-mips@freebsd.org mailing list > > > https://lists.freebsd.org/mailman/listinfo/freebsd-mips > > > To unsubscribe, send any mail to "freebsd-mips-unsubscribe@freebsd.org > " > > > _______________________________________________ > freebsd-mips@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-mips > To unsubscribe, send any mail to "freebsd-mips-unsubscribe@freebsd.org" >
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