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tran_quiesce(9E)	      Driver Entry Points	      tran_quiesce(9E)

NAME
       tran_quiesce, tran_unquiesce - quiesce and unquiesce a SCSI bus

SYNOPSIS
       #include <sys/scsi/scsi.h>

       int prefixtran_quiesce(dev_info_t *hba_dip);

       int prefixtran_unquiesce(dev_info_t *hba_dip);

INTERFACE LEVEL
       Solaris DDI

PARAMETERS
       hba_dip	  The dev_info_t pointer associated with the SCSI HBA.

DESCRIPTION
       The     tran_quiesce()	 and	 tran_unquiesce()   vectors   in   the
       scsi_hba_tran(9S)  structure  should  be	 initialized  during  the  HBA
       driver's	  attach(9E).  They  are  HBA entry points to be called when a
       user initiates quiesce and unquiesce operations through device  control
       interfaces.

       tran_quiesce() should wait for all outstanding commands to complete and
       blocks (or queues) any I/O  requests  issued.  tran_unquiesce()	should
       allow I/O activities to resume on the SCSI bus.

       Implementation is hardware specific.

RETURN VALUES
       tran_quiesce() and tran_unquiesce() should return:

       0	   Successful completion.

       Non-zero	   An error occurred.

ATTRIBUTES
       See attributes(5) for a description of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Interface Stability	     │Committed			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       attributes(5), tran_bus_reset(9E), scsi_hba_tran(9S)

SunOS 5.10			  31 Jan 1999		      tran_quiesce(9E)

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