From mboxrd@z Thu Jan 1 00:00:00 1970 From: Grant Grundler Subject: Re: [parisc-linux] Re: 2.6.4-rc1-pa3 siimage/NS87415 IDE progess (and another mystery)! Date: Mon, 12 Jul 2004 10:05:34 -0600 Message-ID: <20040712160534.GA12046@colo.lackof.org> References: <20040309063629.GM1113@tausq.org> <20040309072917.GN1113@tausq.org> <20040711221829.GA27835@colo.lackof.org> <20040711231401.GW546@tausq.org> <20040711233439.GX546@tausq.org> <20040712033752.GA10163@sal.ucc.ie> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: parisc-linux@lists.parisc-linux.org To: "M. Grabert" Return-Path: In-Reply-To: <20040712033752.GA10163@sal.ucc.ie> List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: parisc-linux-bounces@lists.parisc-linux.org On Mon, Jul 12, 2004 at 04:37:52AM +0100, M. Grabert wrote: > Tested above patch, but unfortunately it didn't work for me, The rest of your post in fact suggests it did. Ie you should no longer need to "sea" at the boot prompt. > the NS87415 still doesn't use DMA (or so it seems, at least it's > still the 3MB/s instead of the expected 30-40MB/s). > > hdparm -c /dev/hda showed DMA was turned on, and I even set it on > again (hdparm -c 1), just to be sure, but it didn't make any > difference in performance :( This patch makes no attempt at changing existing DMA behaviors. It's likely the NS87415 code needs to twiddle the "Prefetch Mode" bits for something other than ATAPI (no prefetch) to get better performance. grant _______________________________________________ parisc-linux mailing list parisc-linux@lists.parisc-linux.org http://lists.parisc-linux.org/mailman/listinfo/parisc-linux