man/man9e/tran_reset_notify.9e

         te
 Copyright (c) 1997, Sun Microsystems, Inc. All Rights Reserved
 The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
 You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
 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]
 tran_reset_notify 9E "30 Aug 1995" "SunOS 5.11" "Driver Entry Points"
 NAME
tran_reset_notify - request to notify SCSI target of bus reset
 SYNOPSIS

#include <sys/scsi/scsi.h>


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


 INTERFACE LEVEL

Solaris architecture specific (Solaris DDI).
 PARAMETERS

ap

Pointer to the scsi_address(9S) structure.


flag

A flag indicating registration or cancellation of a notification request.


callback

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


arg

The callback function argument.


 DESCRIPTION

The tran_reset_notify() entry point is called when a target driver
requests notification of a bus reset.

The tran_reset_notify() vector in the scsi_hba_tran(9S) structure
may be initialized in the HBA driver's attach(9E) routine to point
to the HBA entry point to be called when a target driver calls
scsi_reset_notify(9F).

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.


SCSI_RESET_CANCEL

Cancel the reset notification request for the target.


The HBA driver maintains a list of reset notification requests
registered by the target drivers. When a bus reset occurs, the HBA
driver notifies registered target drivers by calling the callback routine,
callback, with the argument, arg, for each registered target.
 RETURN VALUES

For SCSI_RESET_NOTIFY requests, tran_reset_notify() must return
DDI_SUCCESS if the notification request has been accepted, and
DDI_FAILURE otherwise.

For SCSI_RESET_CANCEL requests, tran_reset_notify() must return
DDI_SUCCESS if the notification request has been canceled, and
DDI_FAILURE otherwise.
 SEE ALSO

attach(9E), scsi_ifgetcap(9F), scsi_reset_notify(9F),
scsi_address(9S), scsi_hba_tran(9S)

Writing Device Drivers