up —
UNIBUS storage module controller/disk drives
sc0 at uba? csr 0176700 vector upintr
up0 at sc0 drive 0
NOTE: This driver has not been ported from 4.4BSD yet.
This is a generic UNIBUS storage module disk driver. It is
    specifically designed to work with the Emulex SC-21 and SC-31 controllers.
    It can be easily adapted to other controllers (although bootstrapping will
    not necessarily be directly possible.)
The script
    MAKEDEV(8) should be used
    to create the up special files; consult
    mknod(8) if a special file
    needs to be made manually. It is recommended as a security precaution to not
    create special files for devices which may never be installed.
The driver interrogates the controller's holding register to determine the type
  of drive attached. The driver recognizes seven different drives: CDC 9762, CDC
  9766, AMPEX DM980, AMPEX 9300, AMPEX Capricorn, FUJITSU 160, and FUJITSU Eagle
  (the Eagle is not supported by the SC-21).
Special file names begin with
    ‘up’ and
    ‘rup’ for the block and character
    files respectively. The second component of the name, a drive unit number in
    the range of zero to seven, is represented by a
    ‘?’ in the disk layouts below. The
    last component of the name, the file system partition, is designated by a
    letter from ‘a’ to
    ‘h’ which also corresponds to a minor
    device number set: zero to seven, eight to 15, 16 to 23 and so forth for
    drive zero, drive two and drive three respectively (see
    physio(4)). The location
    and size (in 512 byte sectors) of the partitions for the above drives:
  - CDC 9762 partitions
- 
    
      
        | disk | start | length | cyls |  
        | hp?a | 0 | 15884 | 0-99 |  
        | hp?b | 16000 | 33440 | 100-309 |  
        | hp?c | 0 | 131680 | 0-822 |  
        | hp?d | 49600 | 15884 | 309-408 |  
        | hp?e | 65440 | 55936 | 409-758 |  
        | hp?f | 121440 | 10080 | 759-822 |  
        | hp?g | 49600 | 82080 | 309-822 |  
 
- CDC 9766 300M drive partitions
- 
    
      
        | disk | start | length | cyl |  
        | up?a | 0 | 15884 | 0-26 |  
        | up?b | 16416 | 33440 | 27-81 |  
        | up?c | 0 | 500384 | 0-822 |  
        | up?d | 341696 | 15884 | 562-588 |  
        | up?e | 358112 | 55936 | 589-680 |  
        | up?f | 414048 | 861760 | 681-822 |  
        | up?g | 341696 | 158528 | 562-822 |  
        | up?h | 49856 | 291346 | 82-561 |  
 
- AMPEX DM980 partitions
- 
    
      
        | disk | start | length | cyls |  
        | hp?a | 0 | 15884 | 0-99 |  
        | hp?b | 16000 | 33440 | 100-309 |  
        | hp?c | 0 | 131680 | 0-822 |  
        | hp?d | 49600 | 15884 | 309-408 |  
        | hp?e | 65440 | 55936 | 409-758 |  
        | hp?f | 121440 | 10080 | 759-822 |  
        | hp?g | 49600 | 82080 | 309-822 |  
 
- AMPEX 9300 300M drive partitions
- 
    
      
        | disk | start | length | cyl |  
        | up?a | 0 | 15884 | 0-26 |  
        | up?b | 16416 | 33440 | 27-81 |  
        | up?c | 0 | 495520 | 0-814 |  
        | up?d | 341696 | 15884 | 562-588 |  
        | up?e | 358112 | 55936 | 589-680 |  
        | up?f | 414048 | 81312 | 681-814 |  
        | up?g | 341696 | 153664 | 562-814 |  
        | up?h | 49856 | 291346 | 82-561 |  
 
- AMPEX Capricorn 330M drive partitions
- 
    
      
        | disk | start | length | cyl |  
        | hp?a | 0 | 15884 | 0-31 |  
        | hp?b | 16384 | 33440 | 32-97 |  
        | hp?c | 0 | 524288 | 0-1023 |  
        | hp?d | 342016 | 15884 | 668-699 |  
        | hp?e | 358400 | 55936 | 700-809 |  
        | hp?f | 414720 | 109408 | 810-1023 |  
        | hp?g | 342016 | 182112 | 668-1023 |  
        | hp?h | 50176 | 291346 | 98-667 |  
 
- FUJITSU 160M drive partitions
- 
    
      
        | disk | start | length | cyl |  
        | up?a | 0 | 15884 | 0-49 |  
        | up?b | 16000 | 33440 | 50-154 |  
        | up?c | 0 | 263360 | 0-822 |  
        | up?d | 49600 | 15884 | 155-204 |  
        | up?e | 65600 | 55936 | 205-379 |  
        | up?f | 121600 | 141600 | 380-822 |  
        | up?g | 49600 | 213600 | 155-822 |  
 
- FUJITSU Eagle partitions
- 
    
      
        | disk | start | length | cyls |  
        | hp?a | 0 | 15884 | 0-16 |  
        | hp?b | 16320 | 66880 | 17-86 |  
        | hp?c | 0 | 808320 | 0-841 |  
        | hp?d | 375360 | 15884 | 391-407 |  
        | hp?e | 391680 | 55936 | 408-727 |  
        | hp?f | 698880 | 109248 | 728-841 |  
        | hp?g | 375360 | 432768 | 391-841 |  
        | hp?h | 83520 | 291346 | 87-390 |  
 
The up?a partition is normally used for the root file system, the
    up?b partition as a paging area, and the up?c partition for pack-pack
    copying (it maps the entire disk). On 160M drives the up?g partition maps
    the rest of the pack. On other drives both up?g and up?h are used to map the
    remaining cylinders.
  - /dev/up[0-7][a-h]
- block files
- /dev/rup[0-7][a-h]
- raw files
  - up%d%c: hard error %sing fsbn %d[-%d] cs2=%b er1=%b er2=%b.
- An unrecoverable error occurred during transfer of the specified
      filesystem block number(s), which are logical block numbers on the
      indicated partition. The contents of the cs2, er1 and er2 registers are
      printed in octal and symbolically with bits decoded. The error was either
      unrecoverable, or a large number of retry attempts (including offset
      positioning and drive recalibration) could not recover the error.
- up%d: write locked.
- The write protect switch was set on the drive when a write was attempted.
      The write operation is not recoverable.
- up%d: not ready.
- The drive was spun down or off line when it was accessed. The I/O
      operation is not recoverable.
- up%d: not ready (flakey).
- The drive was not ready, but after printing the message about being not
      ready (which takes a fraction of a second) was ready. The operation is
      recovered if no further errors occur.
- up%d%c: soft ecc reading fsbn %d[-%d].
- A recoverable ECC error occurred on the specified sector of the specified
      disk partition. This happens normally a few times a week. If it happens
      more frequently than this the sectors where the errors are occurring
      should be checked to see if certain cylinders on the pack, spots on the
      carriage of the drive or heads are indicated.
- sc%d: lost interrupt.
- A timer watching the controller detecting no interrupt for an extended
      period while an operation was outstanding. This indicates a hardware or
      software failure. There is currently a hardware/software problem with
      spinning down drives while they are being accessed which causes this error
      to occur. The error causes a UNIBUS reset, and retry of the pending
      operations. If the controller continues to lose interrupts, this error
      will recur a few seconds later.
Theup driver appeared in
  4.0BSD.
A program to analyze the logged error information (even in its present reduced
  form) is needed.
The partition tables for the file systems should be read off of
    each pack, as they are never quite what any single installation would
    prefer, and this would make packs more portable.