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Date:      Sun, 15 Nov 2009 23:00:07 -0600
From:      Nathan Whitehorn <nwhitehorn@freebsd.org>
To:        Carlo Dapor <catull@gmail.com>
Cc:        Peter Grehan <grehan@freebsd.org>, FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>
Subject:   Re: 8.0-RC2 on Rackmac3,1 - fatal kernel trap
Message-ID:  <4B00DC57.8020805@freebsd.org>
In-Reply-To: <6a9140500911141044g53dcbab3le8d1bec592244b7a@mail.gmail.com>
References:  <aff3f9930911041456o732ea890n6cda52783e8db286@mail.gmail.com> <4AF577F6.2080708@freebsd.org> <4AF90970.4080708@freebsd.org> <4AF9E9F5.8000207@freebsd.org> <4AFA3E5C.4060003@freebsd.org> <4AFA47E1.3080206@freebsd.org> <4AFA5669.1010307@freebsd.org> <4AFB0DA4.2050605@freebsd.org> <6a9140500911132023w613117e9lfa669d49df87e93c@mail.gmail.com> <4AFE42D8.2040305@freebsd.org> <6a9140500911141044g53dcbab3le8d1bec592244b7a@mail.gmail.com>

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Try doing 'set hw.ata.atapi_dma=0' at the prompt. Some Apple ATA 
controllers seem to have issues with ATAPI DMA.
-Nathan

Carlo Dapor wrote:
> Hmm, bad news.
> The 20091112 ISO was used, if that matters.
> No extra configuration was taken, just hit the enter key when prompted so.
>
> The kernel does not correctly handle acd0.
>
> Here's the relevant log
>
> ....
> acd0: WARNING - SETFEATURES SET TRANSFER MODE taskqueue timeout -
> complete request directly
> acd0: TIMEOUT - READ_BIG retrying (1 retry left)
> acd0: WARNING - SETFEATURES SET TRANSFER MODE taskqueue timeout -
> complete request directly
> acd0: TIMEOUT - READ_BIG retrying (0 retries left)
> acd0: FAILURE - READ_BIG timed out
>
> This is repeated over and over.
> Finally this:
>
> panic: mtx_lock() of destroyed mutex @ /usr/src/sys/kern/kern_sema.c:79
> KDB: enter: panic
> [thread pid 12 tid 100016 ]
> Stopped at 0x333d88:    addi   r0, r0, 0x0
> db >
>
> The computer was very loud.
>
> I entered continue at the prompt, and a reboot resulted.
>
> Regards,
> --
> Carlo
>
> On Sat, Nov 14, 2009 at 6:40 AM, Nathan Whitehorn
> <nwhitehorn@freebsd.org> wrote:
>   
>> Carlo Dapor wrote:
>>     
>>> Hello Peter, Nathan fellow PPC-owner
>>>
>>> The link to the ISO file is very slow for me, downloads at 20 kB/s.
>>>
>>> In the meantime, I gave 8.0 rc3 a chance but I get the following:
>>>
>>> panic: moea64_bootstrap: too many ofw translations (100)
>>> uptime: 1s
>>>
>>> The boot process never came this far for me.
>>> The machine is a G5 PowerMac7,3, dual 2.3 GHz, 4GB ram.
>>>
>>> Is the 20091112 snapshot also ideal for my configuration ?
>>> Or is it safer to grab the 20091111 version ?
>>>
>>>       
>> Both will work. 20091111 had a test version of the final change that ended
>> up in the tree. 20091112 has the final, more permanent solution. Either
>> should boot your machine without problems.
>>
>> Unfortunately, due to this problem being discovered so late in the release
>> cycle, the fix for CD booting will not make it into the 8.0 release. 8.0
>> will boot and run fine on G5 systems, but will have to be installed by
>> net-booting. Once the 8.0 release is finalized, I will MFC the patches place
>> an 8.0-STABLE-SNAP install CD somewhere for people who want it.
>> -Nathan
>>
>>     




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