UW-SCSI: got it working

[Rene B. <re...@we...>]

Hello!

This weekend, I found some ugly alignment problems in the 53c770 driver. I 
have removed it only with some dirty hacks (for now), because to fix it in 
a right fashion, the code needs some larger reorganisations.

However, here are the first results: I have successfuly mountet and 
read/write to a ZIP disk. I also have used a UW-SCSI harddisk, copied my 
linux on it and booted from it without any problem. Also I have created 
and used a swap partition on an UW-SCSI drive without problems.
But unfortunately I always failed to mount a CD-ROM, but this could be 
related to my (relative) old Toshiba drive, which has some problems. Also 
it seem, that the kernel sometimes doesn't start if a media is in ZIP or 
in CD-ROM at boottime.

Bottom you can see a cut from my dmesg output, which shows the detection 
and correct attachment of 2 harddisks and a ZIP-drive.

I'll add my last changes to CVS now. Be careful using this driver!



Ciao, Renè



dmesg output:

Trying to detect Cyberstorm-PPC SCSI...
ncr53c8xx: 53c770 detected ncr53c770-0: rev=0x00, base=0xf40000, 
io_port=0x0, irq=12
ncr53c770-0: using memory mapped IO at virtual address 0x80f40000
ncr53c770-0: ID 7, Fast-20, Parity Checking
ncr53c770-0: initial SCNTL3/DMODE/DCNTL/CTEST3/4/5 = (hex) 
05/c0/21/00/00/04
ncr53c770-0: final   SCNTL3/DMODE/DCNTL/CTEST3/4/5 = (hex) 
05/c0/21/00/00/04
ncr53c770-0: on-chip RAM at 0xf41000
ncr53c770-0: resetting, command processing suspended for 2 seconds
ncr53c770-0: restart (scsi reset).
ncr53c770-0: enabling clock multiplier
ncr53c770-0: Downloading SCSI SCRIPTS.
scsi0 : ncr53c770-3.4.3-20010212
ncr53c770-0: command processing resumed
   Vendor: QUANTUM   Model: FIREBALL_TM2110S  Rev: 300N
   Type:   Direct-Access                      ANSI SCSI revision: 02
   Vendor: IOMEGA    Model: ZIP 100           Rev: E.08
   Type:   Direct-Access                      ANSI SCSI revision: 02
   Vendor: IBM       Model: DCAS-34330W       Rev: S65A
   Type:   Direct-Access                      ANSI SCSI revision: 02
Attached scsi disk sda at scsi0, channel 0, id 1, lun 0
Attached scsi removable disk sdb at scsi0, channel 0, id 3, lun 0
Attached scsi disk sdc at scsi0, channel 0, id 8, lun 0
ncr53c770-0-<1,*>: FAST-20 SCSI 20.0 MB/s (50 ns, offset 15)
SCSI device sda: 4124736 512-byte hdwr sectors (2112 MB)
  sda: RDSK sda1 sda2 sda3
ncr53c770-0-<3,*>: target did not report SYNC.
sdb : READ CAPACITY failed.
sdb : status = 1, message = 00, host = 0, driver = 28 Current sd00:00: 
sense key Not Ready
Additional sense indicates Medium not present
sdb : block size assumed to be 512 bytes, disk size 1GB.   sdb: I/O error: 
dev 08:10, sector 0
  I/O error: dev 08:10, sector 0
  unable to read partition table
ncr53c770-0-<8,*>: WIDE SCSI (16 bit) enabled.
ncr53c770-0-<8,*>: FAST-20 WIDE SCSI 40.0 MB/s (50 ns, offset 15)
SCSI device sdc: 8467200 512-byte hdwr sectors (4335 MB)
  sdc: RDSK sdc1 sdc2 sdc3