Date: Thu, 07 May 2009 11:27:45 -0700 From: Oleksandr Tymoshenko <gonzo@freebsd.org> To: Alexandr Rybalko <ray@dlink.ua> Cc: freebsd-mips@freebsd.org Subject: Re: BCM5354 D-Link DIR-320 Message-ID: <4A032821.1040800@freebsd.org> In-Reply-To: <20090506141208.9ea79d6a.ray@dlink.ua> References: <20090506141208.9ea79d6a.ray@dlink.ua>
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Alexandr Rybalko wrote:
> Good day to all!
>
> bfe driver ported as client of siba bus, it`s worked, but work not done.
> To dirty code :)
>
> Question to FreeBSD MIPS guru:
> Maybe problem in me low experience in FreeBSD internals, but I thing bus_dmamem_alloc and bus_dmamem_load
> ignore "alignment" attribute passed to bus_dma_tag_create.
Yes, looks like it. I just skimmed the code and will confirm/test
it a bit later.
>
> BFE need DMA descriptors page to be aligned to 4096, but I done this alignment only with set descriptors count from 128 to 512
>
> Next question, how I can start init (without "write fault at 0x2003821"), if someone know
> start_init: trying /sbin/init
> trap type 3 (TLB miss (store) - kernel mode)
> badaddr = 0x7fffefff, pc = 0x80243400, ra = 0x800bdc2c, sp = 0xc0659e00, sr = 0xff03, pid = 1, ASID = 0x2
> trap type 3 (TLB miss (store) - kernel mode)
> badaddr = 0xc36f4000, pc = 0x80243060, ra = 0x80243208, sp = 0xc0659d60, sr = 0xff03, pid = 1, ASID = 0x2
> trap type 3 (TLB miss (store) - kernel mode)
> badaddr = 0xc36b4000, pc = 0x80243060, ra = 0x80243208, sp = 0xc0659d60, sr = 0xff03, pid = 1, ASID = 0x2
> trap type 3 (TLB miss (store) - kernel mode)
> badaddr = 0x10004000, pc = 0x802435c8, ra = 0x802432cc, sp = 0xc0659b28, sr = 0xff03, pid = 1, ASID = 0x2
> trap type 3 (TLB miss (store) - kernel mode)
> badaddr = 0x7fffefe0, pc = 0x802435c8, ra = 0x802432cc, sp = 0xc0659bc8, sr = 0xff03, pid = 1, ASID = 0x2
> trap type 3 (TLB miss (store) - kernel mode)
> badaddr = 0x7fffdfc4, pc = 0x802435c8, ra = 0x802432cc, sp = 0xc0659bc8, sr = 0xff03, pid = 1, ASID = 0x2
> trap type 25 (address error (store) - user mode)
> badaddr = 0x2003821, pc = 0x4001b4, ra = 0, sp = 0x7fffded8, sr = 0x12, pid = 1, ASID = 0x2
.. skipped ..
These faults should not happen. I think pmap internal data is messed
in some way. So there is no simple answer, this problem requires more
debugging
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