From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: Trouble compiling kernel for G5. From: Benjamin Herrenschmidt To: Stefan Berndtsson Cc: linuxppc-dev list , Jens Axboe In-Reply-To: <87d69rb7y4.fsf@hades.nocrew.org> References: <874qv5c9xd.fsf@hades.nocrew.org> <1073778255.17403.28.camel@gaston> <87llofbaok.fsf@hades.nocrew.org> <1073781366.17403.41.camel@gaston> <87d69rb7y4.fsf@hades.nocrew.org> Content-Type: text/plain Message-Id: <1073784645.763.47.camel@gaston> Mime-Version: 1.0 Date: Sun, 11 Jan 2004 12:30:46 +1100 Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: > > ide0, timeout waiting for dbdma command stop > ide-cd: dma error > hda: DMA disabled > hda: dma error: status=0x50 { DriveReady SeekComplete } > hda: dma error: error=0x00 > cdrom_newpc_intr: 4 residual after xfer > cdrom_newpc_intr: 4 residual after xfer > > And hdparm shows the drive to no longer have DMA turned on, which it did > before running growisofs. > > The same command on a B&W G3 runs fine with DMA (2.4.23 kernel). > > So, to answer your question, it seems it does not work, no. Look like an underrun again, or an alignement problem as there seem to be something weird with the DBDMA on the G5 at least (there is some "workaround" code in darwin that I haven't been able to understand fully yet). Ben. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/