MPT_DIAG_RESET(9) Message-based devices MPT_DIAG_RESET(9)NAME
mpt_diag_reset - Perform hard reset of the adapter.
SYNOPSIS
int mpt_diag_reset(MPT_ADAPTER * ioc, int ignore, int sleepFlag);
ARGUMENTS
ioc
Pointer to MPT_ADAPTER structure
ignore
Set if to honor and clear to ignore the reset history bit
sleepFlag
CAN_SLEEP if called in a non-interrupt thread, else set to NO_SLEEP (use mdelay instead)
DESCRIPTION
This routine places the adapter in diagnostic mode via the WriteSequence register and then performs a hard reset of adapter via the
Diagnostic register. Adapter should be in ready state upon successful completion.
RETURNS
1 hard reset successful 0 no reset performed because reset history bit set -2 enabling diagnostic mode failed -3 diagnostic reset failed
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 MPT_DIAG_RESET(9)
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scsi_reset(9F) Kernel Functions for Drivers scsi_reset(9F)NAME
scsi_reset - reset a SCSI bus or target
SYNOPSIS
#include <sys/scsi/scsi.h>
int scsi_reset(struct scsi_address *ap, int level);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI).
PARAMETERS
ap Pointer to the scsi_address structure.
level The level of reset required.
DESCRIPTION
scsi_reset() asks the host adapter driver to reset the SCSI bus or a SCSI target as specified by level. If level equals RESET_ALL, the SCSI
bus is reset. If it equals RESET_TARGET, ap is used to determine the target to be reset. If it equals RESET_LUN, ap is used to determine
the logical unit to be reset.
When given the RESET_LUN level, scsi_reset() can return failure if the LOGICAL UNIT RESET message is not supported by the target device, or
if the underlying HBA driver does not implement the ability to issue a LOGICAL UNIT RESET message.
Note that, at the point when scsi_reset() resets the logical unit (case RESET_LUN), or the target (case RESET_TARGET), or the bus (case
RESET_ALL), there might be one or more command packets outstanding. That is, packets have been passed to scsi_transport(), and queued or
possibly transported, but the commands have not been completed and the target completion routine has not been called for those packets.
The successful call to scsi_reset() has the side effect that any such commands currently outstanding are aborted, at which point the pack-
ets are marked with pkt_reason set to CMD_RESET, and the appropriate bit -- either STAT_BUS_RESET or STAT_DEV_RESET -- is set in pkt_sta-
tistics. Once thus appropriately marked, the aborted command packets are passed to the target driver command completion routine.
Also note that, at the moment that a thread executing scsi_reset() actually resets the target or the bus, it is possible that a second
thread may have already called scsi_transport(), but not yet queued or transported its command. In this case the HBA will not yet have
received the second thread's packet and this packet will not be aborted.
RETURN VALUES
scsi_reset() returns:
1 Upon success.
0 Upon failure.
CONTEXT
scsi_reset() can be called from user or interrupt context.
SEE ALSO tran_reset(9E), tran_reset_notify(9E), scsi_abort(9F)
Writing Device Drivers
SunOS 5.10 12 Jul 2002 scsi_reset(9F)
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