yongari 85660c8cd7 Add bge(4) support for big-endian architectures(part 2/2).
- removed unused funtion bge_handle_events().
 - removed bus_dmamap_destroy(9) calls for DMA maps created by
   bus_dmamem_alloc(9). This should fix panics seen on sparc64
   in device detach.
 - added check for parent DMA tag creation.
 - switched to use __NO_STRICT_ALIGNMENT as bge(4) supports all
   architectures.
 - added missing bus_dmamap_sync(9) in bge_txeof().
 - added missing bus_dmamap_sync(9) in bge_encap().
 - corrected memory synchronization operation on status block.
   As the driver just read status block that was DMAed by NIC it
   should use BUS_DMASYNC_POSTREAD. Likewise the driver does not
   need to write status block back, so remove unnecessary
   bus_dmamap_sync(9) calls in bge_intr().
 - corrected memory synchronization operation on RX return ring.
   The driver only read the block so remove unnecessary
   bus_dmamap_sync(9) in bge_rxeof().
 - force bus_dmamap_sync(9) for only modified descriptors. Blindly
   synching all desciptor rings would reduce performance.
 - call bus_dmamap_sync(9) for DMA maps that were modified in bge_rxeof().

Reviewed by:	jkim(initial version)
Tested by:	glebius(i386), jkim(amd64 initial version)
2005-12-22 01:44:27 +00:00
..