TRAN_QUIESCE(9E) Driver Entry Points TRAN_QUIESCE(9E)

tran_quiesce, tran_unquiesce - quiesce and unquiesce a SCSI bus

#include <sys/scsi/scsi.h>
int prefixtran_quiesce(dev_info_t *hba_dip);

int prefixtran_unquiesce(dev_info_t *hba_dip);

illumos DDI

hba_dip
The dev_info_t pointer associated with the SCSI HBA.

The tran_quiesce() and tran_unquiesce() vectors in the scsi_hba_tran(9S) structure should be initialized during the HBA driver's attach(9E). They are HBA entry points to be called when a user initiates quiesce and unquiesce operations through device control interfaces.

tran_quiesce() should wait for all outstanding commands to complete and blocks (or queues) any I/O requests issued. tran_unquiesce() should allow I/O activities to resume on the SCSI bus.

Implementation is hardware specific.

tran_quiesce() and tran_unquiesce() should return:

0

Successful completion.

Non-zero

An error occurred.

See attributes(5) for a description of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Committed

attributes(5), tran_bus_reset(9E), scsi_hba_tran(9S)
January 31, 1999 OmniOS