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). 

ARGUMENTS

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

scsi_reset_notify() 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

scsi_reset_notify() can be called from user or interrupt context. 

SEE ALSO

scsi_address(9S), scsi_ifgetcap(9F)

Writing Device Drivers

SunOS 5.5/x86  —  Last change: 8 Sep 1994