Date: Mon, 15 Jan 2001 18:20:03 -0800 (PST) From: Brooks Davis <brooks@one-eyed-alien.net> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/24368: Not having ATA_ENABLE_ATAPI_DMA still has DMA enabled in the kernel Message-ID: <200101160220.f0G2K3I56464@freefall.freebsd.org>
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The following reply was made to PR kern/24368; it has been noted by GNATS. From: Brooks Davis <brooks@one-eyed-alien.net> To: klui@cup.hp.com Cc: freebsd-gnats-submit@FreeBSD.ORG Subject: Re: kern/24368: Not having ATA_ENABLE_ATAPI_DMA still has DMA enabled in the kernel Date: Mon, 15 Jan 2001 18:13:00 -0800 On Mon, Jan 15, 2001 at 05:45:46PM -0800, klui@cup.hp.com wrote: > I, like a lot of other people with the Asus A7V, have drive timeouts > when using the onboard ATA100 controller with UDMA drives. The kernel > configuration says that if ATA_ENABLE_ATAPI_DMA isn't defined, DMA mode > is not used. However, I have found that, for my A7V anyway, DMA is > always enabled during boot time and /etc/sysctl.conf doesn't always turn > off DMA mode before I get the timeouts and PIO fallback routines. I think you're confused (this could be the fault of the docs). ATA_ENABLE_ATAPI_DMA only controls ATAPI DMA which only applies to things like CD-ROMs, Zip drives, TAPEs, etc. It will have no effect on your hard drives. -- Brooks -- Any statement of the form "X is the one, true Y" is FALSE. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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