yamt fb4a1ff192 tweak x86 bus_dma code so that it can be used by xen port.
- distinguish paddr_t and bus_addr_t.
  for xen, use bus_addr_t in the sense of machine address.
- move _X86_BUS_DMA_PRIVATE part of bus.h into bus_private.h.
- remove special handling of xen_shm.  we can always grab
  machine address from pte.
2005-04-16 07:53:35 +00:00
2005-04-16 04:19:24 +00:00
2005-04-14 21:30:11 +00:00
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