tran_reset_notify(9E)

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).

ARGUMENTS

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.

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