Solaris DDI specific (Solaris DDI).

pkt

Pointer to the scsi_pkt(9S) structure.

scsi_poll() 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.

scsi_poll() returns:

0

command completed successfully.

-1

command failed.

scsi_poll() can be called from user or interrupt level. This function should not be called when the caller is executing timeout(9F) in the context of a thread.

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

Writing Device Drivers

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.