2940U2W, DAT HP C1537, 2.2.10, 5.1.18

[Frank Buhr]

Hi,

if I only had bought a plain ultra adapter...
but they were sold out, so I chose the U2W.

Unfortunately my very simple configuration with 
a single DAT Tape at the narrow connector simply refuses to work. 
("timeout" in the log, "mt status" hangs)

After some hours of experimentation I arrived at the latest software
releases, very conservative parameters, but with no success.
And -- strange enough -- it works fine with NT!

May the solution is already there -- in the logs --
has anyone got an idea?


Frank

---
adapter:      AHA-2940U2W, BIOS 2.11.0
device:       DAT HPC1537 at narrow connector
              configured for async transfers in SCSI setup (conservative...)
linux kernel: 2.2.10
aic7xxx:      5.1.18 

-- with synchronous transfers the behaviour is different,
-- I only show the "asynchronous behavior" here

# /sbin/modprobe aic7xxx.o 'aic7xxx=verbose'

Jul  8 05:16:47 klarabella kernel: (scsi0) <Adaptec AHA-294X Ultra2 SCSI host adapter> found at PCI
10/0 
Jul  8 05:16:47 klarabella kernel: (scsi0) Wide Channel, SCSI ID=7, 32/255 SCBs 
Jul  8 05:16:47 klarabella kernel: (scsi0) Downloading sequencer code... 374 instructions downloaded

Jul  8 05:16:47 klarabella kernel: scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI)
5.1.18/3.2.4 
Jul  8 05:16:47 klarabella kernel:        <Adaptec AHA-294X Ultra2 SCSI host adapter> 
Jul  8 05:16:47 klarabella kernel: scsi : 1 host. 
Jul  8 05:16:53 klarabella kernel: scsi : aborting command due to timeout : pid 0, scsi0, channel 0,
id 0, lun 0 Test Unit Ready 00 00 00 00 00  
Jul  8 05:16:53 klarabella kernel: (scsi0:0:0:0) Aborting scb 0, flags 0x4 
Jul  8 05:16:53 klarabella kernel: (scsi0:0:0:0) SCB found in QINFIFO and aborted. 
Jul  8 05:16:53 klarabella kernel: (scsi0:0:0:0) Aborting scb 0 
Jul  8 05:16:53 klarabella kernel: (scsi0:-1:-1:-1) 1 commands found and queued for completion. 
Jul  8 05:16:54 klarabella kernel:   Vendor: HP        Model: C1537A            Rev: L708 
Jul  8 05:16:54 klarabella kernel:   Type:   Sequential-Access                  ANSI SCSI revision:
02 

# mt status

Jul  8 05:17:03 klarabella kernel: st: bufsize 32768, wrt 30720, max buffers 4, s/g segs 16. 
Jul  8 05:17:03 klarabella kernel: Detected scsi tape st0 at scsi0, channel 0, id 1, lun 0 
Jul  8 05:17:03 klarabella kernel: (scsi0:0:1:0) Using asynchronous transfers. 

... mt hangs


# cat /proc/scsi/aic7xxx/0 

Adaptec AIC7xxx driver version: 5.1.18/3.2.4
Compile Options:
  TCQ Enabled By Default : Disabled
  AIC7XXX_PROC_STATS     : Enabled
  AIC7XXX_RESET_DELAY    : 5

Adapter Configuration:
           SCSI Adapter: Adaptec AHA-294X Ultra2 SCSI host adapter
                           Ultra-2 LVD/SE Wide Controller
    PCI MMAPed I/O Base: 0xe7000000
 Adapter SEEPROM Config: SEEPROM found and used.
      Adaptec SCSI BIOS: Enabled
                    IRQ: 9
                   SCBs: Active 1, Max Active 1,
                         Allocated 15, HW 32, Page 255
             Interrupts: 58
      BIOS Control Word: 0x18a6
   Adapter Control Word: 0x1c5d
   Extended Translation: Enabled
Disconnect Enable Flags: 0xffff
     Ultra Enable Flags: 0x0000
 Tag Queue Enable Flags: 0x0000
Ordered Queue Tag Flags: 0x0000
Default Tag Queue Depth: 8
    Tagged Queue By Device array for aic7xxx host instance 0:
      {255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255}
    Actual queue depth per device for aic7xxx host instance 0:
      {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}

Statistics:

(scsi0:0:1:0)
  Device using Narrow/Async transfers.
  Transinfo settings: current(25/0/0/0), goal(0/0/0/0), user(0/0/0/0)
  Total transfers 0 (0 reads and 0 writes)
             < 2K      2K+     4K+     8K+    16K+    32K+    64K+   128K+
   Reads:       0       0       0       0       0       0       0       0
  Writes:       0       0       0       0       0       0       0       0

---
kernel config:
CONFIG_SCSI=m
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
CONFIG_SCSI_AIC7XXX=m
CONFIG_AIC7XXX_CMDS_PER_DEVICE=8
CONFIG_AIC7XXX_PROC_STATS=y
CONFIG_AIC7XXX_RESET_DELAY=5












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