rl(4) - NetBSD Manual Pages

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RL(4)                 NetBSD/vax Kernel Interfaces Manual                RL(4)


NAME

     rl -- RL11/ RL01 and RL02 disk interface


SYNOPSIS

     rlc0 at uba? csr 0177440
     rl0 at rlc0 drive 0
     rl* at rlc? drive ?


DESCRIPTION

     The rl driver is a typical block-device disk driver; block device I/O is
     described in physio(4).

     The script MAKEDEV(8) should be used to create the special files; if a
     special file needs to be created by hand consult mknod(8).


FILES

     /dev/rl[0-7][a-h]   block files
     /dev/rrl[0-7][a-h]  raw files


DIAGNOSTICS

     rl%d: operation incomplete  The current command to the disk did not com-
     plete within the timeout period.  This may be due to hardware failure or
     a heavily loaded UNIBUS.

     rl%d: read data CRC  The controller detected a CRC error on data read
     from the disk. Probably a bad disk pack.

     rl%d: header CRC  The controller detected a CRC error on header data read
     from the disk.  Probably a bad disk pack.

     rl%d: data late  The controller was not able to transfer data over the
     bus fast enough to not overflow/underflow the internal FIFO, probably
     because a heavily loaded UNIBUS or mis-ordered UNIBUS devices.

     rl%d: header not found  The requested sector was not found before the
     timer expired. If this error is the only error then it may indicate a
     software bug.

     rl%d: non-existent memory  The controller tried to do DMA to/from a non-
     mapped address. This is a software bug.

     rl%d: memory parity error  The host memory data sent had a parity error.
     This is a hardware failure.


SEE ALSO

     hp(4), uda(4), up(4), syslogd(8)


HISTORY

     The rl driver has been around nearly forever.
     A complete new rl driver showed up in NetBSD 1.5.


BUGS

     Error handling is less than optimal.

     Seeks should be interleaved between multiple disks.

NetBSD 5.1.2                    April 22, 2000                    NetBSD 5.1.2