🚀 go-pugleaf

I would like to install a QIC-525 streamer drive into our 4/670.  (I have
some data in QIC-525 format that I wish to manipulate on the Sun, so don't
suggest using either DAT or Exabyte instead).

I initially tried to attach an available streamer (Tandberg TDC 3800) in
place of the existing QIC-150.  Although the drive was recognized by the
kernel, I was unable to either read an existing tape, or write to a blank
tape.

Has anyone managed to successfully attach a QIC-525 drive to a Sun? If so,
what brand/model streamer was it, and what (if any) kernel changes were
needed to support it?  Can anyone make any suggestions from the driver
error messages below?

My attempt to write to a blank tape produced the following messages:
(the messages following a read were basically the same).

esp0:    data transfer overrun
 State=DATA Last State=DATA_DONE
 Latched stat=0x90<IPND,XZERO> intr=0x10<BUS> fifo 0x80
 last msg out: <unknown msg 0xff>; last msg in: IDENTIFY
 DMA csr=0x40040010<INTEN>
 addr=ff009420 last=ff009000 last_count=400
 Cmd dump for Target 4 Lun 0:
 cdb=[ 0xa 0x1 0x0 0x0 0x2 0x0 ]
 pkt_state 0xb<XFER,SEL,ARB> pkt_flags 0x0 pkt_statistics 0x1
 cmd_flags=0x23 cmd_timeout 120
 Mapped Dma Space:
         Base = 0xff009000 Count = 0x400
 Transfer History:
         Base = 0xff009000 Count = 0x400
 current phase 0x25=DATAOUT      stat=0x90       0x400
 current phase 0x1b=RESEL        stat=0x97       0x4     0x0
 current phase 0x5=MSG_IN        stat=0x97       0x4
 current phase 0x28=DISCONNECT   stat=0x97       0x400
 current phase 0x2c=SAVEDP       stat=0x97       0x400
 current phase 0x20=SELECT       stat=0x90       0x4     0x0
 current phase 0x1=CMD_START     stat=0x90       0xa     0x20
 current phase 0xb=CMD_CMPLT     stat=0x97       0xc
 current phase 0x27=STATUS       stat=0x97       0x0
 current phase 0xb=CMD_CMPLT     stat=0x93
 current phase 0x26=DATAIN       stat=0x91       0xc
 current phase 0x20=SELECT       stat=0x90       0x4     0x0
 current phase 0x1=CMD_START     stat=0x90       0x1a    0x20
 current phase 0xb=CMD_CMPLT     stat=0x97       0xc
 current phase 0x27=STATUS       stat=0x97       0x0
 current phase 0xb=CMD_CMPLT     stat=0x93
st0:     transport completed with data_ovr
st0:     attempting a device reset
st0:     attempting a bus reset
st0:     SCSI transport failed: reason 'data_ovr': giving up
st0:     Error for command 'write file mark', Error Level: 'Fatal'
         Block: 0
         Sense Key: Unit Attention

Since its not all that common: QIC-525 is a 525MB 1/4" cartridge.  The tape
is longer and has a higher density than QIC-150.
-- 
Peter Jeremy (VK2PJ)
Alcatel Australia Limited
41 Mandible St
ALEXANDRIA  NSW  2015