Re: Yet another HDIO_SET_DMA failed problem
From: Johann Koenig (explosive_at_att.net)
Date: 08/11/03
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Date: Mon, 11 Aug 2003 13:50:50 -0400 To: debian-user@lists.debian.org
On Mon, 11 Aug 2003 13:18:06 -0400 (EDT)
tmcd@panix.com wrote:
> hdparm -d 1 -k 1 /dev/hda
> HDIO_SET_DMA failed: operation not permitted
>
> I went to Google and did some searching, finding what looks like a
> fair amount of false information, like the person who said that you
> just can't do it with a 2.4.21 kernel. Several people suggested a
> command that I forget, but apparently the same info is in /proc/pci.
> -- I should note: 2.4.21 kernel, AMD Athlon K7 processor, Iwill XP333
> motherboard, new Maxtor DiamondMax Plus 9 200 GB IDE (6Y200P0).
>
> 00:04.0 IDE interface: ALi Corporation M5229 IDE (rev (4)
> (prog-if & [Master SecP PriP])
> ISA bridge: ALi Corporation [ALi] M1533 PCI to ISA bridge
> [Alladin IV] (rev 0)
>
> if my scrawled notes are to be trusted. One person had recommended
> that the second line indicated that the alim15x3 module needed to be
> loaded. I did, and bandwidth dropped from 4 MB/s to 1 MB/s!
Are you compiling from source, or using kernel-images? I use VIA board,
and build in VIA82CXXX chipset support (CONFIG_BLK_DEV_VIA82CXXX=y) as
well as Use PCI DMA by default (CONFIG_IDEDMA_PCI_AUTO=y)
> The further frustrating thing is that Knoppix can handle it fine.
> "hdparm -d 1" works fine, and bandwidth goes to the 45-55 MB/s range.
> (I'd prefer higher, given than I'm doing a "badblocks -w" on a new 200
> GB drive and will I hope be doing another, but this means it'll run
> overnight and while I'm at work instead of weeks.)
> (Other parameters (-c, -u, -A, -a, -m) have no noticable effect on the
> speed reported by "hdparm -t", whether under my normal kernel or
> under Knoppix.)
> (This is the latest Knoppix, and uname -a returns 2.4.21, I think
> -xfs.)
Look in /boot/config-<kernel-vesion> on Knoppix to see what modules are
built in. Hint: grep is your friend.
jkoenig@note:/boot$ grep -i ali config-2.4.21
# CONFIG_BLK_DEV_ALI15X3 is not set
^Thats probably the one you want
# CONFIG_WDC_ALI15X3 is not set
^Maybe that one too
# CONFIG_EQUALIZER is not set
# CONFIG_AGP_ALI is not set
# CONFIG_SOUND_ALI5455 is not set
jkoenig@note:/boot$
> I did "lsmod" to see what modules were loaded in Knoppix that weren't
> in my system, and they're these:
>
> af_packet agpgart apm autofs4 cloop cmpci
> efs hfs minix ntfs reiserfs serial
> usb-ohci usbcore xfs
>
> But Knoppix might perhaps have a proper driver built-in, and lsmod
> would not then report it, right?
Built in modules are not reported by lsmod.
> Any clues about what module I might need? Also, where do I put the
> insmod line? (I'm afraid I haven't Googled for that info -- sorry for
> not doig my research.)
modconf puts it in /etc/modules for you
Do not edit your .config file (in /usr/src/[linux<version>,
kernel-source-<version>) by hand. I like menuconfig. xconfig is not bad.
I do not like the new gconfig in 2.6
-- -johann koenig Now Playing: Red Hot Chili Peppers - Johnny, Kick A Hole In The Sky : Mother's Milk Today is Pungenday, the 4th day of Bureaucracy in the YOLD 3169 My public pgp key: http://mental-graffiti.com/pgp/johannkoenig.pgp
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