Date: Thu, 12 Apr 2001 15:05:42 -0500 From: adriel <adriel@adriel.net> To: freebsd-stable@FreeBSD.ORG Subject: Re: ATA_ENABLE_ATAPI_DMA gone? Message-ID: <20010412150542.M5028@adriel.net> In-Reply-To: <20010410134934.Z15938@fw.wintelcom.net>; from bright@wintelcom.net on Tue, Apr 10, 2001 at 01:49:35PM -0700 References: <02db01c0c1b1$c1a0ffe0$0508a8c0@lofi.dyndns.org> <20010410123317.A73359@irrelevant.org> <200104101342.f3ADgsn15019@bmah-freebsd-0.cisco.com> <20010410153425.I5028@adriel.net> <20010410134934.Z15938@fw.wintelcom.net>
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I suppose my frustration comes from changing something that worked perfectly for no good reason, what exactly was wrong with compiling that flag in the kernel, and why was it deemed "obsolete". I understand how to do it now, but my point remains, why was I forced to change, what advantage did I receive from this? I am not running -CURRENT. the main problem in my situation is that I have a DMA hd sharing an IDE cdrom, if you dont enable the ATAPI_DMA then it wont allow dma on the hard drive either. Maybe there is a good reason for this, but I still do not understand why something that was not breaking the system would be arbitrarily removed without any warning. The only POSSIBLE advantage I could have seen with moving this to be sysctl only is that you could change it without rebooting, and even that is not the case. Quoting Alfred Perlstein (bright@wintelcom.net): > * adriel <adriel@adriel.net> [010410 13:34] wrote: > > hw.ata.atapi_dma > > set to 1 for DMA access 0 for PIO (default is PIO). > > > > root@misty:~# sysctl -w hw.ata.atapi_dma=1 > > sysctl: oid 'hw.ata.atapi_dma' is read only > > > > what the hell? I need this, my drive takes forever to mount without it > > it scrolls tons of errors before finally timing out and using pio. > > "what the hell?" ? > > didn't you read that Bruce told you? > > > Quoting Bruce A. Mah (bmah@FreeBSD.ORG): > > > > > > And it's also mentioned in RELNOTES.TXT: > > > > > > # To provide more flexible configuration, the various options for the > > > # ata(4) driver are now boot loader tunables, rather than kernel > > > # configure-time options. > > You must set it from the loader. > > -- > -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] > Instead of asking why a piece of software is using "1970s technology," > start asking why software is ignoring 30 years of accumulated wisdom. -- ---------------------------------------------------- Adriel Ickler Network Administrator - adriel@jlms.com Self Trading Securities - Voice: 512-263-2769 www.selftrading.com - Fax: 512-263-2141 ---------------------------------------------------- Avoid Quiet and Placid persons unless you are in Need of Sleep. -- National Lampoon, "Deteriorata" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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