Specifications

Data Structures
1.15 SCSI Class Driver Request Packet (SCDRP)
Table 1–17 (Cont.) Contents of SCSI Class Driver Request Packet
Field Name Contents
SCDRP$L_BUS_PHASE* Current SCSI bus phase. The SCSI port driver defines the following flags in
this longword bit map:
SCDRP$V_DATAOUT DATA OUT phase
SCDRP$V_DATAIN DATA IN phase
SCDRP$V_CMD COMMAND phase
SCDRP$V_STS STATUS phase
SCDRP$V_INV1 Invalid phase 1
SCDRP$V_INV2 Invalid phase 2
SCDRP$V_MSGOUT MESSAGE OUT phase
SCDRP$V_MSGIN MESSAGE IN phase
SCDRP$V_ARB ARBITRATION phase
SCDRP$V_SEL SELECTION phase
SCDRP$V_RESEL RESELECTION phase
SCDRP$V_DISCON DISCONNECT message seen
SCDRP$V_CMD_CMPL COMMAND COMPLETE message received
SCDRP$V_TMODISCON Disconnect operation timed out
SCDRP$V_FREE BUS FREE phase
SCDRP$L_OLD_PHASES* Bus phase tracking information.
SCDRP$L_EVENTS_
SEEN*
Longword bit mask of bus events seen by the SCSI port driver. The following
bits are defined:
SCDRP$V_PARERR Parity error
SCDRP$V_BSYERR Bus lost during command
SCDRP$V_MISPHS Missing bus phase
SCDRP$V_BADPHS Bad phase transition
SCDRP$V_RST Bus reset during command
SCDRP$V_CTLERR SCSI controller error
SCDRP$V_BUSERR SCSI bus error
SCDRP$V_ABORT I/O has been aborted
SCDRP$V_MSGERR Error during message send
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