Scott Long 5b4a781b96 Lock the AMR driver:
- Introduce the amr_io_lock to control access to command queues, bio queues,
  and the hardware.
- Eliminate the taskqueue and do all completion processing in the ithread.
- Assign a static slot number to each command instead of doing a linear
  search for free slots each time a command is needed.
- Modify the interrupt handler to more closely match what Linux does, for
  safety.
2005-01-16 07:34:26 +00:00
..
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