NCR 810 / 2.0.33: suddenly no fast scsi anymore!

NCR 810 / 2.0.33: suddenly no fast scsi anymore!

Post by kn01.. » Wed, 07 Jan 1998 04:00:00



Dear all,

can anybody explain me the foolowing problem, please?
Since changing linux kernel from 2.0.27 to 2.0.33 suddenly my two
harddisks seem to accept only slow scsi... was working without problems
earlier!

Thanks a lot for any help; please send copies of your replies to my email
address too since I cannot read news at the moment without problems.

My boot messages: (the driver for the ncr53c8xx is in verbose mode)

(...)
<4><Yamaha OPL3 FM> at 0x388
<4>Sound initialization complete
<4>ncr53c8xx: setup=disc:y,specf:y,ultra:y,tags:0,sync:50,burst:7,wide:y,diff:0
<4>ncr53c8xx: setup=mpar:y,spar:y,fsn=n,verb:2,debug:0x0,led:n,settle:2,irqm:0
<6>ncr53c8xx: at PCI bus 0, device 17, function 0
<6>ncr53c8xx: 53c810 detected
<6>ncr53c810-0: rev=0x01, base=0xfc800000, io_port=0xd000, irq=15
<4>ncr53c810-0: using memory mapped IO at virtual address 0x181f000
<6>ncr53c810-0: ID 7, Fast-10, Parity Checking
<4>ncr53c810-0: initial SCNTL3/DMODE/DCNTL/CTEST3/4/5 = (hex) 00/80/08/00/00/00
<4>ncr53c810-0: final   SCNTL3/DMODE/DCNTL/CTEST3/4/5 = (hex) 03/80/00/00/08/00
<4>ncr53c810-0: NO FLUSH bit removed from 33 script instructions
<4>ncr53c810-0: NO FLUSH bit removed from 44 script instructions
<4>ncr53c810-0: requesting shared irq 15 (dev_id=0xc080)
<4>ncr53c810-0: resetting, command processing suspended for 2 seconds
<6>ncr53c810-0: restart (scsi reset).          
<4>scsi0 : ncr53c8xx - revision 2.4a
<4>scsi : 1 host.
<4>ncr53c810-0: command processing resumed
<6>ncr53c810-0-<0,0>: SLOW SCSI 5.0 MB/s (200 ns, offset 8)
<4>  Vendor: IBM OEM   Model: 0662S12           Rev: 2 23
<4>  Type:   Direct-Access                      ANSI SCSI revision: 02
<4>Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
<4>  Vendor: IBM       Model: DCAS-34330        Rev: S65A
<4>  Type:   Direct-Access                      ANSI SCSI revision: 02
<4>Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
<4>scsi : detected 2 SCSI disks total.
<4>SCSI device sda: hdwr sector= 512 bytes. Sectors= 2055035 [1003 MB] [1.0 GB]
<6>ncr53c810-0-<1,0>: SLOW SCSI 5.0 MB/s (200 ns, offset 8)
<4>SCSI device sdb: hdwr sector= 512 bytes. Sectors= 8467200 [4134 MB] [4.1 GB] <4>Partition check:
<4> sda: sda1 sda2 sda3
<4> sdb: sdb1 sdb2 sdb3
<4>VFS: Mounted root (ext2 filesystem) readonly.
<4>Adding Swap: 33208k swap-space (priority -1)                        
(...)

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NCR 810 / 2.0.33: suddenly no fast scsi anymore!

Post by MATT C WAGNE » Wed, 07 Jan 1998 04:00:00


when compiling your kernel and selecting the 810 as your scsi card,
there is question about what speed you want the synchronous bus to
run... the default is "5". This is SLOW SCSI. you need to enter "10"
 for FAST SCSI.

        matt

: Dear all,

: can anybody explain me the foolowing problem, please?
: Since changing linux kernel from 2.0.27 to 2.0.33 suddenly my two
: harddisks seem to accept only slow scsi... was working without problems
: earlier!

: Thanks a lot for any help; please send copies of your replies to my email
: address too since I cannot read news at the moment without problems.

: My boot messages: (the driver for the ncr53c8xx is in verbose mode)

: (...)
: <4><Yamaha OPL3 FM> at 0x388
: <4>Sound initialization complete
: <4>ncr53c8xx: setup=disc:y,specf:y,ultra:y,tags:0,sync:50,burst:7,wide:y,diff:0
: <4>ncr53c8xx: setup=mpar:y,spar:y,fsn=n,verb:2,debug:0x0,led:n,settle:2,irqm:0
: <6>ncr53c8xx: at PCI bus 0, device 17, function 0
: <6>ncr53c8xx: 53c810 detected
: <6>ncr53c810-0: rev=0x01, base=0xfc800000, io_port=0xd000, irq=15
: <4>ncr53c810-0: using memory mapped IO at virtual address 0x181f000
: <6>ncr53c810-0: ID 7, Fast-10, Parity Checking
: <4>ncr53c810-0: initial SCNTL3/DMODE/DCNTL/CTEST3/4/5 = (hex) 00/80/08/00/00/00
: <4>ncr53c810-0: final   SCNTL3/DMODE/DCNTL/CTEST3/4/5 = (hex) 03/80/00/00/08/00
: <4>ncr53c810-0: NO FLUSH bit removed from 33 script instructions
: <4>ncr53c810-0: NO FLUSH bit removed from 44 script instructions
: <4>ncr53c810-0: requesting shared irq 15 (dev_id=0xc080)
: <4>ncr53c810-0: resetting, command processing suspended for 2 seconds
: <6>ncr53c810-0: restart (scsi reset).          
: <4>scsi0 : ncr53c8xx - revision 2.4a
: <4>scsi : 1 host.
: <4>ncr53c810-0: command processing resumed
: <6>ncr53c810-0-<0,0>: SLOW SCSI 5.0 MB/s (200 ns, offset 8)
: <4>  Vendor: IBM OEM   Model: 0662S12           Rev: 2 23
: <4>  Type:   Direct-Access                      ANSI SCSI revision: 02
: <4>Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
: <4>  Vendor: IBM       Model: DCAS-34330        Rev: S65A
: <4>  Type:   Direct-Access                      ANSI SCSI revision: 02
: <4>Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
: <4>scsi : detected 2 SCSI disks total.
: <4>SCSI device sda: hdwr sector= 512 bytes. Sectors= 2055035 [1003 MB] [1.0 GB]
: <6>ncr53c810-0-<1,0>: SLOW SCSI 5.0 MB/s (200 ns, offset 8)
: <4>SCSI device sdb: hdwr sector= 512 bytes. Sectors= 8467200 [4134 MB] [4.1 GB] <4>Partition check:
: <4> sda: sda1 sda2 sda3
: <4> sdb: sdb1 sdb2 sdb3
: <4>VFS: Mounted root (ext2 filesystem) readonly.
: <4>Adding Swap: 33208k swap-space (priority -1)                        
: (...)

: ---------------------------------------------------------------------


: Oxford OX2 6QA
: Great Britain               http://www.lrz.de/~huettel/

: Please use PGP for encrypted and signed communication! My public key
: can be found on my webpage  http://www.lrz.de/~huettel/pgp_key.html  
: ---------------------------------------------------------------------

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NCR 810 / 2.0.33: suddenly no fast scsi anymore!

Post by Pat Thoyt » Wed, 07 Jan 1998 04:00:00



> when compiling your kernel and selecting the 810 as your scsi card,
> there is question about what speed you want the synchronous bus to
> run... the default is "5". This is SLOW SCSI. you need to enter "10"
>  for FAST SCSI.

>         matt


> : Dear all,

> : can anybody explain me the foolowing problem, please?
> : Since changing linux kernel from 2.0.27 to 2.0.33 suddenly my two
> : harddisks seem to accept only slow scsi... was working without

[snip]

The kernel documentation also says:
  However, a flawless singled-ended scsi bus supports 10 MHz data
  transfers.  Regardless the value chosen in the Linux configuration,
  the synchronous period can be changed after boot-up through the
  /proc/scsi file system. The generic command is:
      echo "setsync #target period" >/proc/scsi/ncr53c8xx/0
  Use a 25 ns period for 10 Mhz synchronous data transfers.
  If you don't know what to do now, go with the default.

So you don't have to re-compile a new kernel to change that setting.

--
Pat Thoyts                     Remove anti-spam from address to reply.
My PGP key http://www.geocities.com/Yosemite/Rapids/1661/resume.html

 
 
 

1. Mount SCSI NCR 810 + ZIP DRIVE + SCSI DRIVE

What kind of scsi controller do you have for you hard disk? Which
version of Linux are you running?

You could try:
  mount /dev/sda4 /zip -t msdos

to mount the zip drive, but that assumes that your kernel has the
aha152x
scsi driver compiled in, and that you have msdos file system support
and that you have a directory called /zip created.

Might want to do some reading in the HOWTO documents and man pages.

2. bootdisk - Buslogic Flashpoint cards??

3. SCO boot floppy support for CD on NCR 810 SCSI

4. Filesystem blocking

5. NCR-SCSI 810-chip ver 3.04

6. Quota on 1.3.80

7. OS5 & Dell Pentium w/ NCR 810 SCSI

8. Promise DC2300 EIDE with on board LBA

9. Debian-bootdisk problems with NCR SCSI 810

10. anyone got 2.4 x86 working with plato m/b and ncr 810 SCSI?

11. Archive Python woes with NCR 810 scsi card.

12. Multiply SCSI ID numbers (NCR 810 + Quantum)

13. Wanted: NCR 810 PCI-SCSI card recommendations for Linux