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
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.
RETURN VALUES
scsi_poll() returns:
0 command completed successfully.
-1 command failed.
CONTEXT
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.
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 5.10 30 Aug 1995 scsi_poll(9F)
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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
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.
RETURN VALUES
scsi_poll() returns:
0 command completed successfully.
-1 command failed.
CONTEXT
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.
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 5.10 30 Aug 1995 scsi_poll(9F)
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