Messages in this thread | | | Subject | Re: DMA timeout error and then kernel halted | From | Jan Mynarik <> | Date | Mon, 26 Jan 2004 17:37:19 +0100 |
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I've resolved my problem, DMA must be turned on by "Use DMA by default in kernel config", it siply doesn't like latter attempts by hdparm. I tried to have DMA by default previously but only by ide2=dma kernel boot parameter.
Now, I'm on 40MB/s and happy :-)
Jan "Pogo" Mynarik
On Mon, 2004-01-19 at 18:29, Jan Mynarik wrote: > Hi, > > I have DMA problems with HPT366 on BP6 (newest BIOS version RU incl. > 1.28 BIOS for HPT366) and Seagate's 80 GB disk (please see exact model > numbers in attached dmesg). > > It's reproducible (with or without SMP, various kernel versions, > overclocking or not, ACPI on and off) on 2.4.22 and 2.6.0 (test9, test11 > and vanilla) and 2.6.1-rc3. On 2.4 kernel it doesn't halt kernel. > > Problem description: > When I try to set DMA by hdparm, after several seconds the HDD led gets > on and remains on for another amount of seconds, then I got > > hde: dma_timer_expiry: dma status == 0x21 > > and after a while > > hde: DMA timeout error > > then kernel is halted and I need to reset my PC. > > > After some investigations I realized that the problem could be in the > combination of HPT366 and Seagate disk. In the source code of > HighPoint's driver > (http://www.highpoint-tech.com/hpt3xx-opensource-v131.tgz - link is in > kernel's drivers/ide/pci/hpt366.c) I can see some function > (seagate_hdd_fix) used to fix > some seagate disk initialization problem which is not present in > hpt366.c in kernel. I think that's the problem because I > haven't found any reported problem and I think that BP6 is still widely > used. > > Is it known? Any patches, workarounds, or other suggestions? > > Regards, > > Jan "Pogo" Mynarik -- Jan Mynarik <mynarikj@phoenix.inf.upol.cz>
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