From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt To: linas@austin.ibm.com Cc: linuxppc-dev@lists.linuxppc.org In-Reply-To: <20030912120037.A26892@forte.austin.ibm.com> References: <20030911112823.A27066@forte.austin.ibm.com> <20030912120037.A26892@forte.austin.ibm.com> Message-Id: <1063477133.9720.23.camel@gaston> Mime-Version: 1.0 Date: Sat, 13 Sep 2003 20:18:53 +0200 Subject: Re: [PATCH] ppc64 kernel 2.6 ide-related patches (revised) Content-Type: text/plain Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: On Fri, 2003-09-12 at 19:00, linas@austin.ibm.com wrote: > -- the current code does *not* auto-negotiate itself up into the > highest possible performance mode. (i.e. 32 bit transfers, dma on, > etc.) This appears to be due to the fact that this task is normally > done by i386 BIOS, and the ppc open firmware doesn't do anything > analogous, and there's nothing in the kernel (that I know of) to > make up for this. This is done in the kernel by the host chipset driver normally. It works fine on pmac with ppc32 at least ;) ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/