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Date:      Tue, 20 Nov 2001 14:17:42 -0500 (EST)
From:      Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
To:        Jake Burkholder <jake@locore.ca>
Cc:        sparc@FreeBSD.org
Subject:   Re: cvs commit: src/sys/sparc64/sparc64 tick.c
Message-ID:  <200111201917.fAKJHg037790@khavrinen.lcs.mit.edu>
In-Reply-To: <20011119205100.D12724@locore.ca>
References:  <200111180347.fAI3lU882795@freefall.freebsd.org> <200111180349.fAI3nqE74701@khavrinen.lcs.mit.edu> <20011118163306.A12724@locore.ca> <200111190028.fAJ0SEa10262@khavrinen.lcs.mit.edu> <20011119013640.C12724@locore.ca> <200111191829.fAJITqi21292@khavrinen.lcs.mit.edu> <20011119205100.D12724@locore.ca>

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<<On Mon, 19 Nov 2001 20:51:00 -0500, Jake Burkholder <jake@locore.ca> said:

> I've updated main_sym.gz, please try it again.

Latest results: it finds the symbios controller (using the sym driver)
and then panics:

panic: iommo_dvmamap_load: boundary could not be maintained: boundary 16777216 (2048), offset 2042, start 393222, end 393222

(Yes, that message really does say `iommo'.)

Traceback is:

iommu_dvmamap_load+0x178
psycho_dmamap_load+0x28
sym_setup_data_and_start+0x88
sym_action1+0x410
sym_action+0x8
xpt_run_dev_sendq+0x208
xpt_release_devq_device+0xdc
xpt_release_devq_timeout+0xc
softclock+0x1a0
ithread_loop+0x1f8
fork_exit+0x5c
fork_trampoline+0xa4

The sym driver makes some other noises earlier in the boot, but there
seems to be no way to stop the probe (or show msgbuf in ddb) to
actually see what it says.  (It's rather inconvenient to hook up a
serial console at the moment, assuming a VT340 would make this any
easier.)

I'm rather puzzled by the panic; I don't think it should be possible
given the way the resource manager is supposed to work.

-GAWollman


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