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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 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.  

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 executing 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 context. Therefore, calling scsi_poll from interrupt context is not recommended.

Index

NAME

SYNOPSIS

INTERFACE LEVEL

PARAMETERS

DESCRIPTION

RETURN VALUES

CONTEXT

SEE ALSO

WARNINGS

Партнёры:

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