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From: Mike Smith <msmith@FreeBSD.org>
Date: Fri, 31 Mar 2000 16:35:20 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/dev/amr amr.c amr_disk.c amr_pci.c amrvar.h
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msmith      2000/03/31 16:35:18 PST

  Modified files:
    sys/dev/amr          amr.c amr_disk.c amr_pci.c amrvar.h 
  Log:
  Update to latest working version.
  
   - Add periodic status monitoring routine.  Currently just detects
     lost commands, further functionality pending data from AMI.
     Add some new commands states; WEDGED (never coming back) and
     LATE (for when a command that wasmarked as WEDGED comes bacj,
  
   - Remove a number of redundant efforts to poll the card for completed
     commands.  This is what interrupt handlers are for.
  
   - Limit the maximum number of outstanding I/O transactions.  It seems
     that some controllers report more than they can really handle,
     and exceding this limit can cause the controller to lock up.
  
   - Don't use 'wait' mode for anything where the controller might not
     be able to generate interrupts.  (Keep the 'wait' mode though sa it
     will become useful when we start taking userspace commands.
  
   - Use a similar atomic locking trategy to the Mylex driver to prevent
     some reentrancy problems.
  
   - Correctly calculate the block count for non-whoile-bloch transfers
     (actually illegal).
  
   - Use the dsik device's si_drv1 field instead of b_driver1 in the
     buf struct to pass the driver identifier arond.
  
   - Rewrite amr_start and amr_done() along the lines of the Mylex driver
     in order to improve robustnes.
  
   - Always force the PCI busmaster bit on.
  
  Revision  Changes    Path
  1.10      +188 -71   src/sys/dev/amr/amr.c
  1.6       +24 -27    src/sys/dev/amr/amr_disk.c
  1.2       +8 -1      src/sys/dev/amr/amr_pci.c
  1.4       +32 -1     src/sys/dev/amr/amrvar.h



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