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SubjectRe: [BUG?] SIS IDE DMA errors
Date
> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> SIS5513: IDE controller at PCI slot 0000:00:02.5
> SIS5513: chipset revision 208
> SIS5513: not 100% native mode: will probe irqs later
> SIS5513: SiS 961 MuTIOL IDE UDMA100 controller
> ide0: BM-DMA at 0xb800-0xb807, BIOS settings: hda:DMA, hdb:pio
> ide1: BM-DMA at 0xb808-0xb80f, BIOS settings: hdc:DMA, hdd:pio
> hda: IC25N040ATMR04-0, ATA DISK drive

ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
SIS5513: IDE controller at PCI slot 00:02.5
PCI: Found IRQ 10 for device 00:02.5
SIS5513: chipset revision 0
SIS5513: not 100% native mode: will probe irqs later
SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller
ide0: BM-DMA at 0x4000-0x4007, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0x4008-0x400f, BIOS settings: hdc:pio, hdd:pio
hda: IC35L090AVV207-0, ATA DISK drive


Jul 27 04:22:26 mhfl4 kernel: hda: lost interrupt
Jul 27 04:23:15 mhfl4 kernel: hda: dma_timer_expiry: dma status == 0x24
Jul 27 04:23:25 mhfl4 kernel: hda: DMA interrupt recovery

Running mostly 2.4 on this board, not using ACPI, Got similar problems
with 2.4 and when running occasionally 2.6, but not as bad except with
2.4.22-pre7.

Suspect chipset related issue which should be looked into.

You could try setting udma mode with hdparm -Xudma[12345] and see
if it helps.

I use from a script on startup

sync
hdparm -S 255 -K1 -c3 -Xudma5 /dev/hda.

Note: IME, hdparm should not be used when there is substantial
disk activity.

Regards
Michael


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