aic79xx fixes

Hi all,

this is a next round of aic79xx fixes. It fixes some critical issues; most importantly I've added a check for the BIOS settings and the error recovery has been reworked.

Patches in detail:
01: Remove qfrozen
Converting the qfrozen / semaphore logic to the much simpler complete()
02: Use tcq functions
The midlayer provides generic tcq functions. Use them. Also sets the queuedepth to '1' if tcq is disabled; otherwise some devices are overrun.
03: Remove dead code
Adrian Bunk memorial patch
04: Update error recovery
Split codepaths for ABORT and BUS RESET
05: Handle Invalid sequencer interrupt
Disable debugging output
06: Use BIOS settings
Enable the handling of BIOS settings
07: Avoid renegotiation on inquiry
We don't always have to smarter than the midlayer.

Please apply.

Cheers,

Hannes

Dr. Hannes Reinecke			[email protected]
SuSE Linux Products GmbH		S390 & zSeries
Maxfeldstraße 5				+49 911 74053 688
90409 Nürnberg				http://www.suse.de

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