Messages in this thread | | | Date | Mon, 09 Jul 2001 22:41:38 -0500 | From | "M.H.VanLeeuwen" <> | Subject | Re: Does kernel require IDE enabled in BIOS to access HD, FS errors? |
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Andre,
I had a chance to play a little more today, here is what I've come up with:
a. w/ hdc disable in BIOS, changing the PIO mode to 0 or 1 seems to allow the system to run error free. PIO mode 3 still has silent FS corruption issues.
b. w/ hdc enabled in BIOS, the PIO mode doesn't seem to matter. (except for speed;)
c. CONFIG_IDEDMA_PCI_AUTO affects the number of interrupts needed to complete each block xfer. With it enabled the number of IRQ's per second ~600. With it disabled ~2/block or 5000-6000 per second. I thought from the dmesg output that DMA was disabled and this option should have no affect.
> CMD646: IDE controller on PCI bus 00 dev 10 > CMD646: chipset revision 1 > CMD646: not 100% native mode: will probe irqs later > CMD646: chipset revision 0x01, MultiWord DMA Limited, IRQ workaround enabled > CMD646: simplex device: DMA disabled > ide0: CMD646 Bus-Master DMA disabled (BIOS) > CMD646: simplex device: DMA disabled > ide1: CMD646 Bus-Master DMA disabled (BIOS)
d. CONFIG_IDEDMA_PCI_AUTO does not seem to affect the outcome of "a" or "b" above.
Martin
andre@linux-ide.org wrote: > > Martin, you have an old beast that there are problems in how the chipset > was deployed. > How are you confirming the corruption against the various layers in the > kernel? > If you would like patches & tests to verify I will send them to you. > > Cheers > > -- > Andre Hedrick > Linux ATA Development > ASL Kernel Development > ----------------------------------------------------------------------------- > ASL, Inc. Toll free: 1-877-ASL-3535 > 1757 Houret Court Fax: 1-408-941-2071 > Milpitas, CA 95035 Web: www.aslab.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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