Messages in this thread | | | From | "Steve Snyder" <> | Subject | RE: Why won't my HD do DMA I/O? | Date | Mon, 11 Feb 2002 13:30:26 -0600 |
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I should have noted this in my original post but, yes, I have enabled DMA in the kernel:
# grep DMA /usr/src/linux-2.4.17/.config | grep -v '#' CONFIG_BLK_DEV_IDEDMA_PCI=y CONFIG_BLK_DEV_ADMA=y CONFIG_IDEDMA_PCI_AUTO=y CONFIG_BLK_DEV_IDEDMA=y CONFIG_IDEDMA_AUTO=y
Thanks for the response.
-----Original Message----- From: Bill Davidsen [mailto:davidsen@tmr.com] Sent: Monday, February 11, 2002 12:20 PM To: Steve Snyder Cc: linux-kernel@vger.kernel.org Subject: Re: Why won't my HD do DMA I/O?
On Fri, 8 Feb 2002, Steve Snyder wrote:
> I've got a system on which the hard disk cannot be set to use DMA. When I > attempt to enable DMA ("hdparm -d1 /dev/hda") on this drive, there is a long > time-out period, after which displaying the settings shows that DMA is still > not set.
You did build this kernel with DMA support in the kernel, right? For your chipset? Vendor kernels have been known to err on the side of safty.
-- bill davidsen <davidsen@tmr.com> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.
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