From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932550AbVJZF6M (ORCPT ); Wed, 26 Oct 2005 01:58:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932551AbVJZF6M (ORCPT ); Wed, 26 Oct 2005 01:58:12 -0400 Received: from zproxy.gmail.com ([64.233.162.196]:13840 "EHLO zproxy.gmail.com") by vger.kernel.org with ESMTP id S932550AbVJZF6L convert rfc822-to-8bit (ORCPT ); Wed, 26 Oct 2005 01:58:11 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=CWls3U0FU7hR/ZrguR5uJmBjUN/8Ijos48KQaqfLvmeI8wJyP69n16mbrr7XvAu/vfqGe3uIGJP9DqHzsmSRWWBbHbhXoh0xP04xO5Jfohr6Tgrux7y7bTEUvsCxCGUEBfsqvD/pVq9QFuDKMiN8w6deBLCulKqdMVV6K1RsSgw= Message-ID: <7a37e95e0510252258k621b46efj4d37c2ceed00dfeb@mail.gmail.com> Date: Wed, 26 Oct 2005 11:28:10 +0530 From: Deven Balani To: Jeff Garzik Subject: Re: reference code for non-PCI libata complaint SATA for ARM boards. Cc: Alan Cox , linux-kernel@vger.kernel.org In-Reply-To: <435E6D55.7090903@pobox.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <7a37e95e0510250511g631db9edoe4c739ed24b7a79b@mail.gmail.com> <1130254633.25191.33.camel@localhost.localdomain> <435E6D55.7090903@pobox.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi jeff, Thank you for your quick reply. According to your mail I believe I had to write a SATA low-level driver only for 2.6 kernels. But I have a problem my other drivers are 2.4.25 compliant. So it is a huge work to make all other drivers 2.6 compliant and use libata-core.c. I believe it is far more easier to have 2.4.x libata rather than porting my drivers to 2.6.x. What do you suggest me ? Regards, balani On 10/25/05, Jeff Garzik wrote: > Alan Cox wrote: > > On Maw, 2005-10-25 at 17:41 +0530, Deven Balani wrote: > > > >>Hi All! > >> > >>I am currently writing a low-level driver for non-PCI SATA controller > >>in ARM platform.which uses libata-core.c for linux-2.4.25. Can any one > >>tell me any reference code available under linux. > > > > > > At the moment its a bit hard to do a non PCI driver because the core > > code assumes that there is a device structure (or pci_dev structure) for > > everything. Fixing that is a two line change for 2.6 (probably similar > > for 2.4) but Jeff Garzik rejected it. > > In 2.6.x, libata needs no fixes to support non-PCI devices. > > An out-of-tree driver for a non-PCI embedded board exists, and works > 100%. Use of struct device and dma_xxx() means it is bus-agnostic. > That's how the whole system was designed to work -- and work, it does. > > None of this is true in 2.4.x, of course... > > Jeff > > > -- "A smile confuses an approaching frown..."