Re: Status of Marvell SATA driver (was Re: Trying latest sata_mv - and getting freeze)

[Vladimir Lazarenko <vlad@lazarenko.net>]

> > > > > My hardware is SMP Supermicro with 6 disks on
> > > > > Marvell MV88SX6081 8-port SATA II PCI-X Controller (rev 03)
> > > > > and the sata_mv.c is version 0.25 dated 22 Oct 2005
> > > > >
> > > > > The thing works with "old" mvsata340 driver, but the "new" kernel with
> > > > > your driver freezes when it starts to probe disks.  Even Magic SysRq
> > > > > does not work.  The last lines I see on screen are like this:
> > > > >
> > > > > sata_mv version 0.25
> > > > > ACPI: PCI Interrupt 0000:02:03.0[A] -> GSI 56 (level, low) -> IRQ 185
> > > > > sata_mv(0000:02:03.0) 32 slots 8 ports unknown mode IRQ via MSI
> > > > > ata1: SATA max UDMA/133 cmd 0x0 ctl 0xF8C22120 bmdma 0x0 irq 185
> > > > > ata2: .... <same things>            0xF8C24120 ...
> > > > > ...
> > > > > ata8: .... <same thing>             0xF8C38120 ...
> > > > > ATA: abnormal status 0x80 on port 0xF8C2211C
> > > > > ... <five more lines identical to the above>
> > > > > ata1: dev 0 ATA-7, max UDMA/133, 781422768 sectors: LBA48
> > > > >
> > > > > - and at this point it freezes hard.
> > > > > Any suggestions for me?  Any information I can collect to help
> > > > > troubleshooting?
> > >
> > > [...]
> > >
> > >
> > > > In the meantime, try turning off SMP and seeing if that makes a
> > > > difference.  There still might be a problem with the spinlocks and if so
> > > > it should go away in uniprocessor mode.
> > >
> > > 'nosmp' makes no difference.
> >
> >
> > Booting with nosmp isn't enough, you need to compile the kernel with
> > CONFIG_SMP turned off. Otherwise the spinlocks will still be used and
> > could cause a hard hang.
>
>
> Yeah, that was it!  It boots with the kernel compiled for UP.
> (did not yet have a chance to check how it works).
> Any chance that somebody competent would fix the driver for SMP?

Umm, that sounds freakingly familiar to what I just had with sata_nv... 
Try "noapic" in smp mode, will that help?

And just in case, did you try 2.6.14-rc5? That was the kernel that fixed 
my similar problem "out-of-the-box".

Regards,
Vladimir

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