Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 5 Aug 2002 16:12:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 5 Aug 2002 16:12:46 -0400 Received: from astound-64-85-224-253.ca.astound.net ([64.85.224.253]:49157 "EHLO master.linux-ide.org") by vger.kernel.org with ESMTP id ; Mon, 5 Aug 2002 16:12:40 -0400 Date: Mon, 5 Aug 2002 13:08:53 -0700 (PDT) From: Andre Hedrick To: linux-kernel@vger.kernel.org cc: linux-ide@vger.kernel.org Subject: Re: [PATCH] IDE udma_status = 0x76 and 2.5.30... In-Reply-To: <20020804222542.GH13053@ppc.vc.cvut.cz> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1082 Lines: 32 This has now become an utter JOKE! If we examine Table 2-3 of the Retired SFF-8038i rev 1.0 the only document to describe the behaviors of Bus Master IDE Status Register. It is a R/W field. Bit 7: Simplex RO Bit 6: Device 1 DMA Capable RW Bit 5: Device 0 DMA Capable RW Bit 4: Reserved "MUST RETURN ZERO ON READS" !!! Vendor Write Bit 3: Reserved "MUST RETURN ZERO ON READS" !!! Vendor Write Bit 2: Bus Master Interrupt STATUS R Clear W Bit 1: Bus Master Error STATUS R Clear W Bit 0: Bus Master Active STATUS Vendor Write, is not a published or listed techincal term. It is me trying to present this clearly enough so that the masses will see how poorly the general understanding of the basics in 2.5. Not to worry, I am sure UnderDog will come an save the day soon enough. Regards, Andre Hedrick LAD Storage Consulting Group - 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/