linux-kernel - Re: 2.6.20*: PATA DMA timeout, hangs (2)

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Date:	Mon, 12 Mar 2007 13:21:18 +0100
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	Frank van Maarseveen <frankvm@...nkvm.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.20*: PATA DMA timeout, hangs (2)


Hi,

Could you check if this is the same problem as this one:

http://bugzilla.kernel.org/show_bug.cgi?id=8169

Thanks,
Bart

On Monday 12 March 2007, Frank van Maarseveen wrote:
> On Mon, Mar 12, 2007 at 09:54:47AM +0100, Frank van Maarseveen wrote:
> > 
> > 2.6.19 is ok, 2.6.20.[12] hangs from the moment DMA is turned on (hdparm
> > -d 1 /dev/hda):
> > 
> > 	hda: dma_timer_expiry: dma status == 0x20
> > 	hda: DMA timeout retry
> > 	hda: timeout waiting for DMA
> > 	hda: status error: status=0x58 {
> > 	DriveReady
> > 	SeekComplete
> > 	DataRequest
> > 	}
> 
> I have a totally different PATA based system (P4 HT) with similar symptoms
> except that it seem to recover by switching DMA off during boot after
> 5 errors:
> 
> hda: dma_timer_expiry: dma status == 0x20
> hda: DMA timeout retry
> hda: timeout waiting for DMA
> hda: status error: status=0x58 { DriveReady SeekComplete DataRequest }
> ide: failed opcode was: unknown
> hda: drive not ready for command
> hda: dma_timer_expiry: dma status == 0x20
> hda: DMA timeout retry
> hda: timeout waiting for DMA
> hda: status error: status=0x58 { DriveReady SeekComplete DataRequest }
> ide: failed opcode was: unknown
> hda: drive not ready for command
> hda: dma_timer_expiry: dma status == 0x20
> hda: DMA timeout retry
> hda: timeout waiting for DMA
> hda: status error: status=0x58 { DriveReady SeekComplete DataRequest }
> ide: failed opcode was: unknown
> hda: drive not ready for command
> hda: dma_timer_expiry: dma status == 0x20
> hda: DMA timeout retry
> hda: timeout waiting for DMA
> hda: status error: status=0x58 { DriveReady SeekComplete DataRequest }
> ide: failed opcode was: unknown
> hda: drive not ready for command
> hda: dma_timer_expiry: dma status == 0x20
> hda: DMA timeout retry
> hda: timeout waiting for DMA
> hda: status error: status=0x58 { DriveReady SeekComplete DataRequest }
> ide: failed opcode was: unknown
> hda: drive not ready for command
> 
> So in this case it doesn't hang but is not really usable either.
> 
> lspci:
> 00:00.0 Host bridge: Intel Corporation 82865G/PE/P DRAM Controller/Host-Hub Interface (rev 02)
> 00:01.0 PCI bridge: Intel Corporation 82865G/PE/P PCI to AGP Controller (rev 02)
> 00:1d.0 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 (rev 02)
> 00:1d.1 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02)
> 00:1d.2 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 (rev 02)
> 00:1d.3 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4 (rev 02)
> 00:1d.7 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
> 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2)
> 00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02)
> 00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 02)
> 00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02)
> 00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
> 00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02)
> 01:00.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200] (rev a1)
> 02:00.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet Controller (rev 05)
> 
> This system has SATA but there's only one PATA disk
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