Date: Mon, 15 Jan 2001 23:30:03 -0800 (PST) From: Soren Schmidt <sos@freebsd.dk> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/24368: Not having ATA_ENABLE_ATAPI_DMA still has DMA enabled in the kernel Message-ID: <200101160730.f0G7U3400371@freefall.freebsd.org>
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The following reply was made to PR kern/24368; it has been noted by GNATS. From: Soren Schmidt <sos@freebsd.dk> 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: Tue, 16 Jan 2001 08:24:40 +0100 (CET) It seems klui@cup.hp.com wrote: > >Description: > 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. The ATA_ENABLE_ATAPI_DMA only switches the _ATAPI_ DMA support, for _ATA_ disks it is enabled if the HW says it supports it. I think the problem here might be that some of the newer VIA based board might in fact have a VIA '686B southbridge, which apparantly needs different setups. Could you mail me the dmesg output from a verbose boot, and the output from a pciconf -l please ? -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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