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 Copyright (c) 2006, Sun Microsystems, Inc.,
 All Rights Reserved
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 When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
 SCSI_RESET_NOTIFY 9F "Jan 16, 2006"
 NAME
scsi_reset_notify - notify target driver of bus resets

 SYNOPSIS


#include <sys/scsi/scsi.h>



void scsi_reset_notify(struct scsi_address *ap, int flag,
 void (*callback)(caddr_t), caddr_t arg);




 INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).

 PARAMETERS
ap


Pointer to the scsi_address structure.



flag


A flag indicating registration or cancellation of the notification request.



callback


A pointer to the target driver's reset notification function.



arg


The callback function argument.




 DESCRIPTION

The scsi_reset_notify() function is used by a target driver when it needs
to be notified of a bus reset. The bus reset could be issued by the transport
layer (e.g. the host bus adapter (HBA) driver or controller) or by
another initiator.


The argument flag is used to register or cancel the notification. The
supported values for flag are as follows:
SCSI_RESET_NOTIFY


Register callback as the reset notification function for the target
driver.



SCSI_RESET_CANCEL


Cancel the reset notification request.





Target drivers can find out whether the HBA driver and controller support
reset notification by checking the reset-notification capability using
the scsi_ifgetcap(9F) function.

 RETURN VALUES

If flag is SCSI_RESET_NOTIFY, scsi_reset_notify() returns:
DDI_SUCCESS


The notification request has been accepted.



DDI_FAILURE


The transport layer does not support reset notification or could not accept
this request.





If flag is SCSI_RESET_CANCEL, scsi_reset_notify() returns:
DDI_SUCCESS


The notification request has been canceled.



DDI_FAILURE


No notification request was registered.




 CONTEXT

The scsi_reset_notify() function can be called from user, interrupt, or
kernel context.

 SEE ALSO

scsi_address(9S), scsi_ifgetcap(9F)


Writing Device Drivers