Preallocate sgmap extent regions for tsp, cia and mcpcia dma maps, which fall
back to sgmap if the direct mapping fails.

ok miod@

Remove excessive sys/cdefs.h inclusion
ok guenther millert kettenis

Remove unused _pfthresh member from struct alpha_bus_dma_tag.

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code t

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@

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add DEC_KN300 support from NetBSD;

This code makes it possible to run on some of the AlphaServers,
namely AlphaServer 4100 and 1200.

add mcbus(4) and mcpcia(4) to provide support for the system bus

add DEC_KN300 support from NetBSD;

This code makes it possible to run on some of the AlphaServers,
namely AlphaServer 4100 and 1200.

add mcbus(4) and mcpcia(4) to provide support for the system bus and
the MCPCIA-to-PCI bus adapter that can be found in these systems

allow the pci_swiz_bus code to handle variable extent names
to be able to handle more than one mcpcia(4)

"just commit it" deraadt@

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