[SunHELP] Problems with AEC-7720UW IDE-SCSI bridges

[Frank-Christian Kruegel]

Hi,

just to warn you:

I've bought four AEC-7720UW IDE-SCSI bridges to use cheap IDE disks in
a Sparc machine - an UltraAXe, where the onboard IDE ports seem to do
only PIO4.

The configuration is like this:

Mainboard: Sun UltraAXe ATX mainboard
OS: Sun Solaris 8 10/2000 with Maintenance Update 6
SCSI controller: Sun/Symbios 22801 dual channel controller with
SYM53C876 chip.

Hard disks:
Each channel has for disks:
ID 0: SUN 9.0G (IBM DNES 9Gig drive with SCA-UW adapter)
ID 1: IBM-DCAS-32160W (UW, 68 pin connector)
ID 2: Western Digital WDC WD1200BB-22CAA0 120GB IDE disk
        with IDE-UWSCSI bridge
ID 3: Western Digital WDC WD1200BB-00CAA1 120GB IDE disk
        with IDE-UWSCSI bridge

When booting the system I always get the following error messages
complaining that the scsi device (i.e. the IDE-SCSI bridge) sent too
much data. The system does not give errors for the real/native SCSI
disks.

-----
glm: [ID 655122 kern.warning] WARNING: ID[SUNWpd.check_intcode.6006]
scsi: [ID 107833 kern.warning] WARNING: /pci at 1f,0/pci at 1/scsi at 1 (glm1):
  Resetting scsi bus, data overrun: got too much data from target from
(2,0)
scsi: [ID 107833 kern.warning] WARNING: /pci at 1f,0/pci at 1/scsi at 1 (glm1):
  Target 2 reducing sync. transfer rate
glm: [ID 923092 kern.warning] WARNING:
ID[SUNWpd.glm.sync_wide_backoff.6014]
glm: [ID 655122 kern.warning] WARNING: ID[SUNWpd.check_intcode.6006]
scsi: [ID 107833 kern.warning] WARNING: /pci at 1f,0/pci at 1/scsi at 1,1
(glm2):
  Resetting scsi bus, data overrun: got too much data from target from
(2,0)
scsi: [ID 107833 kern.warning] WARNING: /pci at 1f,0/pci at 1/scsi at 1,1
(glm2):
  Target 2 reducing sync. transfer rate
glm: [ID 923092 kern.warning] WARNING:
ID[SUNWpd.glm.sync_wide_backoff.6014]
scsi: [ID 193665 kern.info] sd33 at glm2: target 3 lun 0
genunix: [ID 936769 kern.info] sd33 is /pci at 1f,0/pci at 1/scsi at 1,1/sd at 3,0
scsi: [ID 193665 kern.info] sd18 at glm1: target 3 lun 0
genunix: [ID 936769 kern.info] sd18 is /pci at 1f,0/pci at 1/scsi at 1/sd at 3,0
scsi: [ID 365881 kern.info]   <WDC WD1200BB-00CAA1 cyl 57459 alt 2 hd
16 sec 255>
last message repeated 1 time
glm: [ID 655122 kern.warning] WARNING: ID[SUNWpd.check_intcode.6006]
scsi: [ID 107833 kern.warning] WARNING: /pci at 1f,0/pci at 1/scsi at 1,1
(glm2):
  Resetting scsi bus, data overrun: got too much data from target from
(3,0)
scsi: [ID 107833 kern.warning] WARNING: /pci at 1f,0/pci at 1/scsi at 1,1
(glm2):
  Target 3 reducing sync. transfer rate
glm: [ID 923092 kern.warning] WARNING:
ID[SUNWpd.glm.sync_wide_backoff.6014]
glm: [ID 655122 kern.warning] WARNING: ID[SUNWpd.check_intcode.6006]
scsi: [ID 107833 kern.warning] WARNING: /pci at 1f,0/pci at 1/scsi at 1 (glm1):
  Resetting scsi bus, data overrun: got too much data from target from
(3,0)
scsi: [ID 107833 kern.warning] WARNING: /pci at 1f,0/pci at 1/scsi at 1 (glm1):
  Target 3 reducing sync. transfer rate
glm: [ID 923092 kern.warning] WARNING:
ID[SUNWpd.glm.sync_wide_backoff.6014]
-----

I've asked the manufacturer for help but got no answer yet.


Regards
Frank-Christian Kruegel