Commit Graph

9 Commits

Author SHA1 Message Date
msmith
d41e8aa9b7 Staticise the aac devclass. 2002-01-09 03:32:40 +00:00
scottl
7bf5661641 Add functionality and fix bugs so the driver will work with soon-to-be
released management apps.

1.  Implement poll().  This will check for queued aif's so that a
    subsequent ioctl call to retrieve the next aif will not block.
2.  Don't catch signals when sleeping on a fib sent from userland.  This
    causes a race and panic due to the pthread context switcher waking
    up the tsleep at inopportune times.
3.  Fix some whitespace nits.

MFC after:	3 days
2001-12-02 03:47:33 +00:00
scottl
06023d7a89 Bring the aac driver *much* closer to style(9).
Reviewed by:	ken
2001-09-05 20:43:02 +00:00
scottl
ca93e132a4 Mega update to the aac driver.
1.  Correctly handle commands initiated by the adapter.  These commands
    are defered to a kthread responsible for their processing, then are
    properly returned to the controller.
2.  Add/remove disk devices when notified by the card that a container was
    created/deleted/offline.
3.  Implement crashdump functionality.
4.  Support all ioctls needed for the management CLI to work.  The linux
    version of this app can be found at the Dell or HP website.  A native
    version will be forthcoming.

MFC-after:	4.4-RELEASE
2001-08-29 23:34:05 +00:00
scottl
5afb54ee1e Bugfixes. Close a race and logic bug in the timeout handling, don't call the
interrupt handler from the upper half, etc.  This fixes some serious stability
problems that we were seeing on our production server.  These patches have
been tested for almost 6 months and are a highly recommended MFC candidate.

Reviewed by:	gibbs, merry, msmith
MFC after:	4 days
2001-08-05 06:20:13 +00:00
scottl
a48590ff89 Reformat for 80 columns. Sorry, but I had to do it. 2001-08-03 00:50:30 +00:00
gibbs
29db911e9b This is an MFC candidate.
Add the AAC_DEBUG option to enable debugging in the aac driver.

Correct a race condition in the interrupt handler where the
controller may queue a fib to a response queue after the driver
has serviced the queue but before the interrupt is cleared.
This could leave a completed fib stranded in the response queue
unless another I/O completed and generated another interrupt.

Reviewed by:	msmith
2001-03-17 00:12:15 +00:00
msmith
7a963983ca Major bugfix and minor update. This should resolve the current issues
with the driver locking up under load.

 - Restructure so that we use a static pool of commands/FIBs, rather than
   allocating them in clusters.  The cluster allocation just made things
   more complicated, and allowed us to waste more memory in peak load
   situations.
 - Make queueing macros more like my other drivers.  This adds queue stats
   for free.  Add some debugging to take advantage of this.
 - Reimplement the periodic timeout scan.  Kick the interrupt handler
   and the start routine every scan as well, just to be safe.  Track busy
   commands properly.
 - Bring resource cleanup into line with resource allocation.  We should
   now clean up correctly after a failed probe/unload/etc.
 - Try to start new commands when old ones are completed.  We weren't doing
   this before, which could lead to deadlock when the controller was full.
 - Don't try to build a new command if we have found a deferred command.
   This could cause us to lose the deferred command.
 - Use diskerr() to report I/O errors.
 - Don't bail if the AdapterInfo structure is the wrong size.  Some variation
   seems to be normal.  We need to improve our handing of 2.x firmware sets.
 - Improve some comments in an attempt to try to make things clearer.
 - Restructure to avoid some warnings.
2000-12-27 13:14:56 +00:00
msmith
b3a68de811 A new driver for PCI:SCSI RAID controllers based on the Adaptec FSA
design.  This includes integrated Dell RAID controllers, the Dell
PERC 2/QC and the HP NetRAID-4M.
2000-09-13 03:20:35 +00:00