From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 28 Jun 2001 18:15:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 28 Jun 2001 18:15:31 -0400 Received: from cs159246.pp.htv.fi ([213.243.159.246]:16432 "EHLO porkkala.cs140085.pp.htv.fi") by vger.kernel.org with ESMTP id ; Thu, 28 Jun 2001 18:15:19 -0400 Message-ID: <3B3BAC65.3ED4CBEF@pp.htv.fi> Date: Fri, 29 Jun 2001 01:15:01 +0300 From: Jussi Laako X-Mailer: Mozilla 4.76 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: "Ryan W. Maple" CC: Alan Cox , linux-kernel Subject: Re: VIA 686B/Data Corruption In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org "Ryan W. Maple" wrote: > > I remember hearing something about Red Hat disabling UDMA on VIA chips > across the board. Maybe that has something to do with it? Dunno, if the kernel lies. There are four HDs on Promise and one HD and one CDROM on VIA. This is from currently running 2.4.2-2: ----------VIA BusMastering IDE Configuration---------------- Driver Version: 3.20 South Bridge: VIA vt82c686b Revision: ISA 0x40 IDE 0x6 BM-DMA base: 0xb800 PCI clock: 33MHz Master Read Cycle IRDY: 0ws Master Write Cycle IRDY: 0ws BM IDE Status Register Read Retry: yes Max DRDY Pulse Width: No limit -----------------------Primary IDE-------Secondary IDE------ Read DMA FIFO flush: yes yes End Sector FIFO flush: no no Prefetch Buffer: no no Post Write Buffer: no no Enabled: yes yes Simplex only: no no Cable Type: 40w 40w -------------------drive0----drive1----drive2----drive3----- Transfer Mode: UDMA PIO PIO PIO Address Setup: 30ns 30ns 120ns 120ns Cmd Active: 90ns 90ns 480ns 480ns Cmd Recovery: 30ns 30ns 480ns 480ns Data Active: 90ns 90ns 330ns 330ns Data Recovery: 30ns 30ns 270ns 270ns Cycle Time: 60ns 90ns 90ns 90ns Transfer Rate: 33.3MB/s 22.2MB/s 22.2MB/s 22.2MB/s PDC20265 Chipset. ------------------------------- General Status ---------------------------- Burst Mode : enabled Host Mode : Normal Bus Clocking : 33 PCI Internal IO pad select : 10 mA Status Polling Period : 0 Interrupt Check Status Polling Delay : 2 --------------- Primary Channel ---------------- Secondary Channel -------- enabled enabled 66 Clocking enabled enabled Mode PCI Mode PCI FIFO Empty FIFO Empty --------------- drive0 --------- drive1 -------- drive0 ---------- drive1 - DMA enabled: yes yes yes yes DMA Mode: UDMA 4 UDMA 4 UDMA 4 UDMA 4 PIO Mode: PIO 4 PIO 4 PIO 4 PIO 4 - Jussi Laako -- PGP key fingerprint: 161D 6FED 6A92 39E2 EB5B 39DD A4DE 63EB C216 1E4B Available at PGP keyservers