Re: Kernel 2.4.test1, SYM53C875 SCSI problem

[Michal Jaegermann <michal ellpspace math ualberta ca>]

lbedford@wbtsystems.com wrote:
> 
> On Fri, Jun 02, 2000 at 09:33:19PM +0000, Ingo Rohloff wrote:
> > Hi,
> > 
> > I've got an Alpha "Ruffian" Samsung UX mainboard based system.
> > It includes an Symbios NCR53c875 controller.
> > I just tried to run a 2.4.test1 kernel on it and it failed
> > because of the SCSI setup procedure.
> > 
> > The kernel tells me something like
> > ...
> > sym53c8xx: at PCI bus 1, device 13, function 0
> > sym53c8xx: setting PCI_COMMAND_PARITY...(fix-up)
> > sym53c8xx: 53c875 detected 
> > sym53c875-0: rev=0x03, base=0xa100000, io_port=0xa000, irq=20
> > sym53c875-0: ID 7, Fast-20, Parity Checking
> > sym53c875-0: on-chip RAM at 0xa101000
> > sym53c875-0: restart (scsi reset).
> > sym53c875-0: Downloading SCSI SCRIPTS.
> > scsi0 : sym53c8xx - version 1.3g
> > scsi : 1 host.
> > 
> > And then it fails to detect the SCSI devices
> > (an IBM Harddisk, and a Pioneer CDROM) because of timeout errors.
> > 
> > any hints ?
> Nope, but I'm having the same problem.

Hm, I am using sym53c8xx on UX, but not with 2.4 kernel, and I did 
not see any troubles at all.

ym53c8xx: at PCI bus 1, device 13, function 0
sym53c8xx: setting PCI_COMMAND_PARITY...(fix-up)
sym53c8xx: 53c875 detected 
sym53c875-0: rev 0x3 on pci bus 1 dev 13 func 0 irq 20
sym53c875-0: ID 7, Fast-20, Parity Checking
sym53c875-0: on-chip RAM at 0xa901000
sym53c875-0: restart (scsi reset).
sym53c875-0: Downloading SCSI SCRIPTS.
scsi0 : sym53c8xx - version pre-1.5g-3
scsi : 1 host.
  Vendor: IBM       Model: DCAS-34330W       Rev: S65A
  Type:   Direct-Access                      ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
  Vendor: IBM       Model: DDRS-39130D       Rev: DC1B
  Type:   Direct-Access                      ANSI SCSI revision: 02
Detected scsi disk sdb at scsi0, channel 0, id 2, lun 0
  Vendor: TOSHIBA   Model: CD-ROM XM-6201TA  Rev: 1037
  Type:   CD-ROM                             ANSI SCSI revision: 02
Detected scsi CD-ROM sr0 at scsi0, channel 0, id 6, lun 0
  Vendor: IBM       Model: DDRS-34560D       Rev: DC1B
  Type:   Direct-Access                      ANSI SCSI revision: 02
Detected scsi disk sdc at scsi0, channel 0, id 10, lun 0
sym53c875-0-<0,0>: tagged command queue depth set to 8
sym53c875-0-<2,0>: tagged command queue depth set to 8
sym53c875-0-<10,0>: tagged command queue depth set to 8
scsi : detected 1 SCSI cdrom 3 SCSI disks total.

As you see this is not 1.3g but a later version which I patched into
a kernel myself.  If you want to experiment you will find that
on ftp://ftp.tux.org/tux/roudier/drivers/linux/

Note also that a very extensive README.ncr53c8xx describes many
different tuning parameters for the driver and how to use them.  This is
really worth to consult - especially if something does not work.

  Michal