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From: Andrew Gallatin <gallatin@cs.duke.edu>
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Date: Sat,  6 Jan 2001 18:25:45 -0500 (EST)
To: Wilko Bulte <wkb@freebie.demon.nl>
Cc: freebsd-alpha@freebsd.org
Subject: Re: debugging fpa / FDDI panic
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Yes. that's what I meant.  Sorry for the delay. The maze of #ifdefs in
the driver is making me dizzy..  I wonder if there's an unifdef that's 
smart enough to deal with #if defined()..

Anyway, try changing the typdef of the pdq_bus_memaddr_t from
	typedef volatile pdq_uint32_t *pdq_bus_memaddr_t;
		to
	typedef volatile vm_offset_t *pdq_bus_memaddr_t;

in the FreeBSD section of ifdefs.


Also, printf (with %lx)  the value of sc->sc_membase prior to calling
pdq_initialize().

If this works, we're still going to need a DMA hack.  It will be
something like this:

#if defined(__FreeBSD__) && defined(__alpha__)
#define PDQ_OS_VA_TO_PA(pdq, p)         (vtophys((vm_offset_t)p) | (pdq->pdq_type == PDQ_DEFTA ? 0 : alpha_XXX_dmamap_or))
#endif

Ick..

Drew



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