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BUS_DMA_COHERENT as a hint instead, currently ignored.
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currently unused bus macros. kids tested mother approved
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Historically, the documentation of extended asm was lacking, namely you
should NOT specify the same register as an input, and a clobber.
If the register is clobbered, it should be specified as an output as well,
e.g., by linking input and output through the "number" notation.
(Beware of lvalues, some local variables needed...)
In older versions, up-to egcs1.1.1, the compiler did not even warn about
it, but it was liable to output bad code. Newer egcs are pickier and
simply refuse to swallow such code.
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so far, the other archs gets placeholders for now. I wrote a compatibility
layer for OpenBSD's old isadma code so we can still use our old
driver sources. They will however get changed to native bus_dma use,
on a case by case basis. Oh yes, I almost forgot, I kept our notion
of isadma being a device so DMA-less ISA-busses still work
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Two things pointed out by Chris Demetriou <cgd@cs.cmu.edu>:
- The boundary argument to bus_space_alloc() should be a bus_size_t, not
a bus_addr_t.
- The buffer arguments in the "multiple write" methods should have
const qualifiers.
And one from me:
- Make bus_space_barrier() eat up the arguments passed to it so that
the compiler doesn't needlessly whine.
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implement unimplemented.....
implement unimplemented.....
in cc -S it looks like it should....
in cc -S it looks like it should....
in cc -S it looks like it should....
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NetBSD 961107 state. Other has not, partly because sometimes the bus.h
changes was coupled with other changes.
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where relevant.
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