[Cbe-oss-dev] Playstation 3 BD-ROM access and LV1_DENIED_BY_POLICY

[Geert Uytterhoeven]

On Mon, 6 Aug 2007, James Bottomley wrote:
> On Mon, 2007-08-06 at 15:38 +0200, Geert Uytterhoeven wrote:
> > On Fri, 3 Aug 2007, Geoff Levand wrote:
> > > Nicholas A. Bellinger wrote:
> > > > Thank you for this information.  I since been able to resolve my issue
> > > > on 2.6.16 (which ended up being my fault), and was able to determine
> > > > that the issue on 2.6.23-rc1 is due to
> > > > drivers/scsi/scsi_lib.c:scsi_execute_async() rejecting READ_10 and
> > > > TEST_UNIT_READY commands in certain cases (perhaps a race in
> > > > drivers/scsi/ps3rom.c..?) using this API that was causing the win32 side
> > > > to throw exceptions.
> > > 
> > > If you get more info on what was happening here, please report it to Geert
> > > so he can investigate.  He should return next week.
> > 
> > Indeed.
> > 
> > Perhaps because ps3rom cannot queue more than 1 command?
> > I'm CCing the SCSI guys, just in case this rings a bell.
> 
> Without details, it's really hard to speculate.  The problem description
> is manifestly strange for two reasons
> 
>      1. READ_10 should never be issued via scsi_execute_async.  There's
>         no ULD in the current kernel that does this.  The READ_X/WRITE_X
>         commands are issued through the filesystem path.
>      2. There's no command filter in there either:  I can imagine an eh
>         problem where the LLD isn't accepting the TUR because it still
>         thinks the just recovered command is outstanding.
> 
> So could we have some actual details?

Nicholas is using the PS3 as an iSCSI target for watching BD-ROM content on
other machines. That's probably where the weird command submission comes from.

He will hopefully fill in the rest...

With kind regards,
 
Geert Uytterhoeven
Software Architect

Sony Network and Software Technology Center Europe
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium
 
Phone:    +32 (0)2 700 8453	
Fax:      +32 (0)2 700 8622	
E-mail:   Geert.Uytterhoeven at sonycom.com	
Internet: http://www.sony-europe.com/
 	
Sony Network and Software Technology Center Europe	
A division of Sony Service Centre (Europe) N.V.	
Registered office: Technologielaan 7 · B-1840 Londerzeel · Belgium	
VAT BE 0413.825.160 · RPR Brussels	
Fortis Bank Zaventem · Swift GEBABEBB08A · IBAN BE39001382358619