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

NAME

tran_quiesce, tran_unquiesce - quiesce and unquiesce a SCSI bus

SYNOPSIS

#include <sys/scsi/scsi.h>

int prefixtran_quiesce(dev_info_t *hba_dip);


int prefixtran_unquiesce(dev_info_t *hba_dip);

INTERFACE LEVEL

illumos DDI

PARAMETERS

hba_dip
The dev_info_t pointer associated with the SCSI HBA.

DESCRIPTION

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.

RETURN VALUES

tran_quiesce() and tran_unquiesce() should return:

0
Successful completion.


Non-zero
An error occurred.

ATTRIBUTES

See attributes(7) for a description of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Committed |
+--------------------+-----------------+

SEE ALSO

attributes(7), tran_bus_reset(9E), scsi_hba_tran(9S)

January 31, 1999 TRAN_QUIESCE(9E)