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|man pages section 9: DDI and DKI Kernel Functions Oracle Solaris 10 1/13 Information Library|
- run a polled SCSI command on behalf of a target driver
#include <sys/scsi/scsi.h> int scsi_poll(struct scsi_pkt *pkt);
Solaris DDI specific (Solaris DDI).
Pointer to the scsi_pkt(9S) structure.
The scsi_poll() function requests the host adapter driver to run a polled command. Unlike scsi_transport(9F) which runs commands asynchronously, 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.
The scsi_poll() function returns:
command completed successfully.
The scsi_poll() function can be called from user, interrupt, or kernel context. This function should not be called when the caller is executing timeout(9F) in the context of a thread.
Since scsi_poll() runs commands to completion before returning, it may require more time than is desirable when called from interrupt context. Therefore, calling scsi_poll from interrupt context is not recommended.