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scsi_transport (9)
  • >> scsi_transport (9) ( Solaris man: Ядро )
  •  

    NAME

    scsi_transport - request by a SCSI target driver to start a command 
     
    

    SYNOPSIS

    #include <sys/scsi/scsi.h> 
    
    
    
    int scsi_transport(struct scsi_pkt *pkt);
    

     

    INTERFACE LEVEL

    Solaris DDI specific (Solaris DDI).  

    PARAMETERS

    pkt

    Pointer to a scsi_pkt(9S) structure.

     

    DESCRIPTION

    Target drivers use scsi_transport() to request the host adapter driver to transport a command to the SCSI target device specified by pkt. The target driver must obtain resources for the packet using scsi_init_pkt(9F) prior to calling this function. The packet may be initialized using one of the makecom(9F) functions. scsi_transport() does not wait for the SCSI command to complete. See scsi_poll(9F) for a description of polled SCSI commands. Upon completion of the SCSI command the host adapter calls the completion routine provided by the target driver in the pkt_comp member of the scsi_pkt pointed to by pkt.  

    RETURN VALUES

    The scsi_transport() function returns:

    TRAN_ACCEPT

    The packet was accepted by the transport layer.

    TRAN_BUSY

    The packet could not be accepted because there was already a packet in progress for this target/lun, the host adapter queue was full, or the target device queue was full.

    TRAN_BADPKT

    The DMA count in the packet exceeded the DMA engine's maximum DMA size.

    TRAN_FATAL_ERROR

    A fatal error has occurred in the transport layer.

     

    CONTEXT

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

    EXAMPLES

    Example 1 Using scsi_transport()

    if ((status = scsi_transport(rqpkt)) != TRAN_ACCEPT) {
         scsi_log(devp, sd_label, CE_WARN,
             "transport of request sense pkt fails (0x%x)\n", status);
    }
    

     

    SEE ALSO

    tran_start(9E), makecom(9F), scsi_init_pkt(9F), scsi_pktalloc(9F), scsi_poll(9F), scsi_pkt(9S)

    Writing Device Drivers


     

    Index

    NAME
    SYNOPSIS
    INTERFACE LEVEL
    PARAMETERS
    DESCRIPTION
    RETURN VALUES
    CONTEXT
    EXAMPLES
    SEE ALSO


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