in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

make this compile

replace bitmask_snprintf(9) with snprintb(3)

Remove clause 3 and 4 from TNF licenses

Split devict_t/softc for ncr5380sbc SCSI, and misc cosmetic changes.

machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

Use device_cfdata().

merge ktrace-lwp.

nuke trailing whitespace

de-__P

DMA, not dma nor Dma.

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

remove trailing \n in panic(). approved perry.

No longer assume that !DDB implies that Debugger() isn't defined.
Now only define Debugger() if it isn't defined already.

don't need <sys/types.h> when including <sys/param.h>

add RCSIDs

Move some logic from dma_start() to dma_setup(); inspired by the sun3 si version.

precede, not preceed.

Pull up the thorpej_scsipi branch to main branch.
This is a completely rewritten scsipi_xfer execution engine, and the
associated changes to HBA drivers. Overview of changes & features:
- All xfers a

Pull up the thorpej_scsipi branch to main branch.
This is a completely rewritten scsipi_xfer execution engine, and the
associated changes to HBA drivers. Overview of changes & features:
- All xfers are queued in the mid-layer, rather than doing so in an
ad-hoc fashion in individual adapter drivers.
- Adapter/channel resource management in the mid-layer, avoids even trying
to start running an xfer if the adapter/channel doesn't have the resources.
- Better communication between the mid-layer and the adapters.
- Asynchronous event notification mechanism from adapter to mid-layer and
peripherals.
- Better peripheral queue management: freeze/thaw, sorted requeueing during
recovery, etc.
- Clean separation of peripherals, adapters, and adapter channels (no more
scsipi_link).
- Kernel thread for each scsipi_channel makes error recovery much easier
(no more dealing with interrupt context when recovering from an error).
- Mid-layer support for tagged queueing: commands can have the tag type
set explicitly, tag IDs are allocated in the mid-layer (thus eliminating
the need to use buggy tag ID allocation schemes in many adapter drivers).
- support for QUEUE FULL and CHECK CONDITION status in mid-layer; the command
will be requeued, or a REQUEST SENSE will be sent as appropriate.

Just before the merge syssrc has been tagged with thorpej_scsipi_beforemerge

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sparc/dev/sireg.h -> dev/vme/sireg.h

The `si' driver has been transformed into an MI VME frontend.