The slave_attach() function is not currently implemented. This function would be used to negotiate synchronous communications between the host adapter and the target drive. This negotiation requires an exchange of a pair of SYNCHRONOUS DATA TRANSFER REQUEST messages between the initiator and the target. This exchange should occur under the following conditions [LXT91]:
A SCSI device that supports synchronous data transfer recognizes it has not communicated with the other SCSI device since receiving the last ``hard'' RESET.A SCSI device that supports synchronous data transfer recognizes it has not communicated with the other SCSI device since receiving a BUS DEVICE RESET message.