From mboxrd@z Thu Jan 1 00:00:00 1970 To: Benjamin Herrenschmidt Cc: linuxppc-dev list , Jens Axboe Subject: Re: Trouble compiling kernel for G5. 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> <1073784645.763.47.camel@gaston> From: Stefan Berndtsson Date: Sun, 11 Jan 2004 02:58:35 +0100 In-Reply-To: <1073784645.763.47.camel@gaston> (Benjamin Herrenschmidt's message of "Sun, 11 Jan 2004 12:30:46 +1100") Message-ID: <873canb60k.fsf@hades.nocrew.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: Benjamin Herrenschmidt writes: >> >> 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). Ok, I'll just sit tight and wait a bit then. :) /Stefan ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/