opensolaris man page for scsi_poll

scsi_poll(9F)						   Kernel Functions for Drivers 					     scsi_poll(9F)

NAME
       scsi_poll - run a polled SCSI command on behalf of a target driver

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

       int scsi_poll(struct scsi_pkt *pkt);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

PARAMETERS
       pkt    Pointer to the scsi_pkt(9S) structure.

DESCRIPTION
       The  scsi_poll()  function  requests  the  host adapter driver to run a polled command. Unlike scsi_transport(9F) which runs commands asyn-
       chronously, scsi_poll() runs commands to completion before returning. If the pkt_time member of	pkt  is  0,  the  value  of   pkt_time	is
       defaulted to SCSI_POLL_TIMEOUT to prevent an indefinite hang of the system.

RETURN VALUES
       The scsi_poll() function returns:

       0     command completed successfully.

       -1    command failed.

CONTEXT
       The  scsi_poll() function can be called from user, interrupt, or kernel context. This function should not be called when the caller is exe-
       cuting timeout(9F) in the context of a thread.

SEE ALSO
       makecom(9F), scsi_transport(9F), scsi_pkt(9S)

       Writing Device Drivers

WARNINGS
       Since scsi_poll() runs commands to completion before returning, it may require more time than is desirable when called from interrupt  con-
       text.  Therefore, calling scsi_poll from interrupt context is not recommended.

SunOS 5.11							    16 Jan 2006 						     scsi_poll(9F)