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Annotation of lucent/sys/man/3/scsi, revision 1.1

1.1     ! root        1: .TH SCSI 3 
        !             2: .SH NAME
        !             3: scsi \- SCSI command interface
        !             4: .SH SYNOPSIS
        !             5: .nf
        !             6: .B bind #S /dev
        !             7: 
        !             8: .B /dev/scsiid
        !             9: .B /dev/0/cmd
        !            10: .B /dev/0/data
        !            11: .B /dev/0/debug
        !            12: \&...
        !            13: .fi
        !            14: .SH DESCRIPTION
        !            15: .PP
        !            16: The
        !            17: .I scsi
        !            18: interface is accessed through a two-level directory.
        !            19: The
        !            20: .B scsiid
        !            21: file contains the
        !            22: .SM SCSI
        !            23: id of the host interface, typically 7, represented textually.
        !            24: Some implementations allow this to be changed by writing to the file;
        !            25: in many cases, the higher-order bits are hardware specific.
        !            26: .PP
        !            27: Each
        !            28: .SM SCSI
        !            29: target
        !            30: .I n
        !            31: .RI "(0≤" n "≤7)"
        !            32: is associated with a subdirectory
        !            33: .BI "#S/" n
        !            34: containing files
        !            35: .BR cmd ,
        !            36: .BR data ,
        !            37: and
        !            38: .BR debug .
        !            39: The following steps may be used to execute a
        !            40: .SM SCSI
        !            41: command:
        !            42: .IP
        !            43: The command block is written to the
        !            44: .B cmd
        !            45: file.
        !            46: .IP
        !            47: The
        !            48: .B data
        !            49: file is either written or read depending on
        !            50: the direction of the transfer.  (A command that involves no data transfer
        !            51: is executed with a zero-length write.)
        !            52: .IP
        !            53: The
        !            54: .B cmd
        !            55: file is read to retrieve the status of the command,
        !            56: returned as a 4-byte big-endian integer.
        !            57: .PP
        !            58: Writing an
        !            59: .SM ASCII
        !            60: .L 1
        !            61: to the
        !            62: .B debug
        !            63: file causes tracing information to be written to
        !            64: .BR /dev/klog ;
        !            65: writing a
        !            66: .L 0
        !            67: turns the tracing off.
        !            68: .PP
        !            69: .SH SEE ALSO
        !            70: .IR wren (3)
        !            71: .SH SOURCE
        !            72: .B /sys/src/9/port/devscsi.c
        !            73: .br
        !            74: .B /sys/src/9/*/scsi.c

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