Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755156AbZKHVHj (ORCPT ); Sun, 8 Nov 2009 16:07:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755048AbZKHVHj (ORCPT ); Sun, 8 Nov 2009 16:07:39 -0500 Received: from khc.piap.pl ([195.187.100.11]:49890 "EHLO khc.piap.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754554AbZKHVHi (ORCPT ); Sun, 8 Nov 2009 16:07:38 -0500 From: Krzysztof Halasa To: Karl Hiramoto Cc: linux-arm-kernel@lists.infradead.org, lkml Subject: Re: IXP4xx repetitive 16-bit/32-bit I/O macros/inlines. References: <4AF72907.1060705@hiramoto.org> Date: Sun, 08 Nov 2009 22:07:41 +0100 In-Reply-To: <4AF72907.1060705@hiramoto.org> (Karl Hiramoto's message of "Sun, 08 Nov 2009 21:24:39 +0100") Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1191 Lines: 31 Karl Hiramoto writes: >> Anybody using 32-bit PATA/SATA transfers on IXP4xx? :-) > Yes, on HPT371 IDE chip on the PCI bus to interface to compact flash > to store logs. $ grep inherits drivers/ata/pata_hpt37x.c .inherits = &ata_bmdma_port_ops, .inherits = &hpt370_port_ops, .inherits = &ata_bmdma_port_ops, .inherits = &hpt372_port_ops, Looks like 16-bit port_ops. > For what it's worth I've only ever been able to make > PIO work, I've never had any luck with the IDE DMA modes. It hasn't > been a high enough priority to investigate further. Interesting. I have no issues with DMA modes, with VIA VT6421A (this chip seems to have other critical problems), with CS5536 (PATA) and with SIL3512 (the patch has to be applied in big-endian mode, and another patch to sata_sil.c must be applied because IXP4xx can't do 8/16-bit PCI MMIO read). -- Krzysztof Halasa -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/