linux-kernel - [BUG] DMA timeout errors on Dell Latitude XPi CD P150ST

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Date:	Tue, 24 Oct 2006 17:05:11 +0200
From:	"Panagiotis Issaris" <panagiotis@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: [BUG] DMA timeout errors on Dell Latitude XPi CD P150ST

Hi,

When booting Linux 2.6.19-rc3 (or 2.6.8-16sarge5 so it is not specific
to the current kernels) on a friends laptop, I'm getting a lot of
errormessages from the IDE controller related to DMA problems. When
disabling all DMA related options, the kernel boots fine (and fast).
With DMA enabled, it takes about 1 minute to stumble over the DMA
problems. The laptop is Dell Latitude XPi CD P150ST.

...
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
CMD643: IDE controller at PCI slot 0000:00:08.0
CMD643: chipset revision 0
CMD643: not 100% native mode: will probe irqs later
CMD643: simplex device: DMA forced
    ide0: BM-DMA at 0xfe00-0xfe07, BIOS settings: hda:pio, hdb:pio
    ide1: BM-DMA at 0xfe08-0xfe0f, BIOS settings: hdc:pio, hdd:pio
Probing IDE interface ide0...
hda: IBM-DCRA-22160, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: CD-ROM CDR-N16D, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 4233600 sectors (2167 MB) w/96KiB Cache, CHS=4200/16/63, DMA
hda: cache flushes not supported
 hda:<4>hda: dma_timer_expiry: dma status == 0x24
hda: DMA timeout error
hda: dma timeout error: status=0x50 { DriveReady SeekComplete }
ide: failed opcode was: unknown
 hda1 hda2 <<4>hda: dma_timer_expiry: dma status == 0x24
hda: DMA timeout error
hda: dma timeout error: status=0x50 { DriveReady SeekComplete }
ide: failed opcode was: unknown
 hda5 >
hdc: ATAPI 6X CD-ROM drive, 32768kB Cache, DMA
...


Afterwards, when accessing the cdrom (hdc) again, it takes about a
minute showing all
kinds of errors:
ide-cd: cmd 0x28 timed out
hdc: DMA timeout retry
hdc: timeout waiting for DMA
hdc: status error: status=0x58 { DriveReady SeekComplete DataRequest }
ide: failed opcode was: unknown
hdc: drive not ready for command
hdc: media error (bad sector): status=0x51 { DriveReady SeekComplete Error }
hdc: media error (bad sector): error=0x34 { AbortedCommand
LastFailedSense=0x03 }
ide: failed opcode was: unknown
ATAPI device hdc:
  Error: Medium error -- (Sense key=0x03)
  (reserved error code) -- (asc=0x02, ascq=0x00)
  The failed "Read 10" packet command was:
  "28 00 00 00 00 10 00 00 02 00 00 00 00 00 00 00 "
end_request: I/O error, dev hdc, sector 64
Buffer I/O error on device hdc, logical block 8

uname:
Linux haard 2.6.19-rc3 #8 Tue Oct 24 16:09:11 CEST 2006 i586 GNU/Linux

cpuinfo:
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 5
model           : 2
model name      : Pentium 75 - 200
stepping        : 12
cpu MHz         : 150.348
cache size      : 0 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr mce cx8
bogomips        : 301.97

lspci:
0000:00:00.0 Host bridge: PicoPower Technology PT86C521 [Vesuvius v1]
Host Bridge (rev 04)
0000:00:06.0 ISA bridge: PicoPower Technology PT86C523 [Vesuvius v3]
PCI-ISA Bridge Slave
0000:00:07.0 VGA compatible controller: Neomagic Corporation NM2090
[MagicGraph 128V] (rev 01)
0000:00:08.0 IDE interface: Silicon Image, Inc. (formerly CMD
Technology Inc) PCI0643
0000:00:09.0 CardBus bridge: Texas Instruments PCI1130 (rev 04)
0000:00:09.1 CardBus bridge: Texas Instruments PCI1130 (rev 04)

lspci -vv, kernel config and dmesg attached.

With friendly regards,
Takis

View attachment "lspcivv.txt" of type "text/plain" (2871 bytes)

View attachment "dmesg.txt" of type "text/plain" (9721 bytes)

View attachment "config.txt" of type "text/plain" (23902 bytes)