cvs commit: src/sys/dev/ciss ciss.c cissreg.h cissvar.h src/share/man/man4 ciss.4

[Paul Saab]

ps          2004/04/16 16:00:02 PDT

  FreeBSD src repository

  Modified files:
    sys/dev/ciss         ciss.c cissreg.h cissvar.h 
    share/man/man4       ciss.4 
  Log:
  Add support for the HP Modular Smart Array 20 & 500 storage arrays.
  Logical volumes on these devices show up as LUNs behind another
  controller (also known as proxy controller).  In order to issue
  firmware commands for a volume on a proxy controller, they must be
  targeted at the address of the proxy controller it is attached to,
  not the Host/PCI controller.
  
  A proxy controller is defined as a device listed in the INQUIRY
  PHYSICAL LUNS command who's L2 and L3 SCSI addresses are zero.  The
  corresponding address returned defines which "bus" the controller
  lives on and we use this to create a virtual CAM bus.
  
  A logical volume's addresses first byte defines the logical drive
  number.  The second byte defines the bus that it is attached to
  which corresponds to the BUS of the proxy controller's found or the
  Host/PCI controller.
  
  Change event notification to be handled in its own kernel thread.
  This is needed since some events may require the driver to sleep
  on some operations and this cannot be done during interrupt context.
  With this change, it is now possible to create and destroy logical
  volumes from FreeBSD, but it requires a native application to
  construct the proper firmware commands which is not publicly
  available.
  
  Special thanks to John Cagle @ HP for providing remote access to
  all the hardware and beating on the storage engineers at HP to
  answer my questions.
  
  Revision  Changes    Path
  1.6       +4 -0      src/share/man/man4/ciss.4
  1.41      +435 -124  src/sys/dev/ciss/ciss.c
  1.7       +9 -0      src/sys/dev/ciss/cissreg.h
  1.7       +18 -14    src/sys/dev/ciss/cissvar.h