Date: Fri, 16 Jan 2004 12:29:56 +0100 From: Francesco Casadei <casadeif@yahoo.it> To: freebsd-questions@freebsd.org Subject: Re: DMA problem with DVD drive Message-ID: <20040116112956.GA2673@goku.kasby> In-Reply-To: <49183.217.187.89.107.1074242037.squirrel@interview-machine.com> References: <49183.217.187.89.107.1074242037.squirrel@interview-machine.com>
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On Fri, Jan 16, 2004 at 09:33:57AM +0100, Roman Kennke wrote: > > Hi there, > > I am not able to enable DMA for my DVD drive. When I issue 'atacontrol > mode 1 UDMA100 XXX' and access the drive, first the drive access hangs, > and after a view seconds the machine locks up completely. This also hold > true for all other DMA modes. > I am running FreeBSD 5.2 on a Fujitsu-Siemens Amilo A Notebook. I would > send more info about the ATA/IDE controller, and the error messages but I > don't know, how to get to this info. > BTW: I know that DMA works for this drive. I have got it working at least > with linux 2.4.22, althought I also had alot of DMA problems with other > versions, so I suspect the hardware (controller) is flakey. > Any help is appreciated. Here follows some output from dmesg: > > moonlight# dmesg | grep ata > atapci0: <AcerLabs Aladdin UDMA100 controller> port 0xa000-0xa00f at > device 4.0 on pci0ata0: at 0x1f0 irq 14 on atapci0 > ata0: [MPSAFE] > ata1: at 0x170 irq 15 on atapci0 > ata1: [MPSAFE] > ad0: 28615MB <FUJITSU MHR2030AT> [58140/16/63] at ata0-master UDMA100 > acd0: CDRW <TOSHIBA DVD-ROM SD-R2212> at ata1-master PIO4 > > > > Ciao, Roman > -- > SOAP for Python > http://interview-machine.com/soap/ > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > end of the original message I have a similar drive on my Toshiba Satellite A30-514 and to set UDMA mode on boot I have put the following line in /boot/loader.conf: hw.ata.atapi_dma="1" Here's the relevant part of dmesg output: acd0: CDRW <TOSHIBA DVD-ROM SD-R2412> at ata1-master UDMA33 Francesco Casadei
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