Re: scsi mode sense broken again

Re: scsi mode sense broken again

[Andries.Brouwer]

> I just did some re-testing, and my self-powered Zip250 and Zip750 work.
> The 750 takes a few seconds to initialize, but nothing really bad.
> What Zip do you have that doesn't work?

2.5.72 or patched 2.5.74:

<4>imm: Version 2.05 (for Linux 2.4.0)
<4>imm: Found device at ID 6, Attempting to use EPP 32 bit
<4>imm: Found device at ID 6, Attempting to use SPP
<4>imm: Communication established at 0x378 with ID 6 using SPP
<6>scsi1 : Iomega VPI2 (imm) interface
<5>  Vendor: IOMEGA    Model: ZIP 100           Rev: P.05
<5>  Type:   Direct-Access                      ANSI SCSI revision: 02
<5>SCSI device sda: 196608 512-byte hdwr sectors (101 MB)
<5>sda: Write Protect is off
<5>sda: cache data unavailable
<6> sda: sda4
<5>Attached scsi removable disk sda at scsi1, channel 0, id 6, lun 0

An unpatched 2.5.74 says

<4>IMM: returned SCSI status b8
<4>sda: test WP failed, assume Write Enabled
<3>sda: asking for cache data failed
<5>sda : READ CAPACITY failed.
<4>sda: test WP failed, assume Write Enabled
<3>Buffer I/O error on device sda, logical block 0
<6> sda: unable to read partition table

and no I/O is possible.

Andries

Re: scsi mode sense broken again

[Matthew Dharm]

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IMM?  So this is the parallel-port version?

Do you still get the proper INQUIRY from 2.5.74?  What about the device
size?

Matt

On Fri, Jul 04, 2003 at 10:52:21PM +0200, Andries.Brouwer@cwi.nl wrote:
> > I just did some re-testing, and my self-powered Zip250 and Zip750 work.
> > The 750 takes a few seconds to initialize, but nothing really bad.
> > What Zip do you have that doesn't work?
> 
> 2.5.72 or patched 2.5.74:
> 
> <4>imm: Version 2.05 (for Linux 2.4.0)
> <4>imm: Found device at ID 6, Attempting to use EPP 32 bit
> <4>imm: Found device at ID 6, Attempting to use SPP
> <4>imm: Communication established at 0x378 with ID 6 using SPP
> <6>scsi1 : Iomega VPI2 (imm) interface
> <5>  Vendor: IOMEGA    Model: ZIP 100           Rev: P.05
> <5>  Type:   Direct-Access                      ANSI SCSI revision: 02
> <5>SCSI device sda: 196608 512-byte hdwr sectors (101 MB)
> <5>sda: Write Protect is off
> <5>sda: cache data unavailable
> <6> sda: sda4
> <5>Attached scsi removable disk sda at scsi1, channel 0, id 6, lun 0
> 
> An unpatched 2.5.74 says
> 
> <4>IMM: returned SCSI status b8
> <4>sda: test WP failed, assume Write Enabled
> <3>sda: asking for cache data failed
> <5>sda : READ CAPACITY failed.
> <4>sda: test WP failed, assume Write Enabled
> <3>Buffer I/O error on device sda, logical block 0
> <6> sda: unable to read partition table
> 
> and no I/O is possible.
> 
> Andries

-- 
Matthew Dharm                              Home: mdharm-usb@one-eyed-alien.net 
Maintainer, Linux USB Mass Storage Driver

Department of Justice agent.  I have come to purify the flock.
					-- DOJ agent
User Friendly, 5/22/1998

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Re: scsi mode sense broken again

[Andries.Brouwer]

    From mdharm@ziggy.one-eyed-alien.net  Fri Jul  4 23:09:37 2003

    Okay, so the question as I see it is this:
    Do we go back to use_10_for_ms = 0 for the default,
    or do we make the IMM driver set it to 0 in the
    slave_configure() function?

I agree completely - that is the question.
The answer I gave is

  -       sdev->use_10_for_ms = 1;
  +       sdev->use_10_for_ms = 0;
 
  It is possible to have use_10_for_ms == 1 as the default, but then
  all drivers that cannot handle that must change that setting privately.
  Maybe that is the future, but for today I would prefer
  the known working version.

Andries

Re: scsi mode sense broken again

[Matthew Dharm]

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On Fri, Jul 04, 2003 at 11:08:06PM +0200, Andries.Brouwer@cwi.nl wrote:
> 	From mdharm@ziggy.one-eyed-alien.net  Fri Jul  4 23:00:41 2003
> 
> 	Do you still get the proper INQUIRY from 2.5.74?
> 
> Yes. But there is no need for you to worry.
> This device just needs use_10_for_ms = 0.
> When that is set all is well.

Okay, so the question as I see it is this:  Do we go back to use_10_for_ms
= 0 for the default, or do we make the IMM driver set it to 0 in the
slave_configure() function?

Matt

-- 
Matthew Dharm                              Home: mdharm-usb@one-eyed-alien.net 
Maintainer, Linux USB Mass Storage Driver

Type "format c:"  That should fix everything.
					-- Greg
User Friendly, 12/18/1997

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Re: scsi mode sense broken again

[Andries.Brouwer]

	From mdharm@ziggy.one-eyed-alien.net  Fri Jul  4 23:00:41 2003

	Do you still get the proper INQUIRY from 2.5.74?

Yes. But there is no need for you to worry.
This device just needs use_10_for_ms = 0.
When that is set all is well.

Andries

Re: scsi mode sense broken again

[Matthew Dharm]

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On Thu, Jul 03, 2003 at 05:10:53PM -0700, Matthew Dharm wrote:
> On Fri, Jul 04, 2003 at 01:06:17AM +0200, Andries.Brouwer@cwi.nl wrote:
> > For me 2.5.72 works, 2.5.74 does not - no working ZIP drive.
> > The cause is the recent fiddling of use_10 / do_mode_sense.
> > If this is known and has a patch on the way all is well.
> > Otherwise I can send a patch.
> 
> Really?  I expected bug reports for CD-ROM, but not for Direct Access
> devices.  What's going bad?

I just did some re-testing, and my self-powered Zip250 and Zip750 work.
The 750 takes a few seconds to initialize, but nothing really bad.

What Zip do you have that doesn't work?

Matt

-- 
Matthew Dharm                              Home: mdharm-usb@one-eyed-alien.net 
Maintainer, Linux USB Mass Storage Driver

Somebody call an exorcist!
					-- Dust Puppy
User Friendly, 5/16/1998

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Re: scsi mode sense broken again

[Matthew Dharm]

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On Fri, Jul 04, 2003 at 01:06:17AM +0200, Andries.Brouwer@cwi.nl wrote:
> For me 2.5.72 works, 2.5.74 does not - no working ZIP drive.
> The cause is the recent fiddling of use_10 / do_mode_sense.
> If this is known and has a patch on the way all is well.
> Otherwise I can send a patch.

Really?  I expected bug reports for CD-ROM, but not for Direct Access
devices.  What's going bad?

> (It feels as if I have to repair this area every other month.)

That's why I originally wanted to just filter all MODE_SENSE commands from
the USB layer.

Matt

-- 
Matthew Dharm                              Home: mdharm-usb@one-eyed-alien.net 
Maintainer, Linux USB Mass Storage Driver

S:  Another stupid question?
G:  There's no such thing as a stupid question, only stupid people.
					-- Stef and Greg
User Friendly, 7/15/1998

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scsi mode sense broken again

[Andries.Brouwer]

For me 2.5.72 works, 2.5.74 does not - no working ZIP drive.
The cause is the recent fiddling of use_10 / do_mode_sense.
If this is known and has a patch on the way all is well.
Otherwise I can send a patch.

Andries

(It feels as if I have to repair this area every other month.)