From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261428AbTD2BFD (ORCPT ); Mon, 28 Apr 2003 21:05:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261445AbTD2BFD (ORCPT ); Mon, 28 Apr 2003 21:05:03 -0400 Received: from adsl-68-74-104-142.dsl.klmzmi.ameritech.net ([68.74.104.142]:33547 "EHLO tabriel.tabris.net") by vger.kernel.org with ESMTP id S261428AbTD2BFB (ORCPT ); Mon, 28 Apr 2003 21:05:01 -0400 From: Tabris To: linux-kernel@vger.kernel.org Subject: 2.4.21-rc1-ac2 Promise IDE DMA won't work Date: Mon, 28 Apr 2003 21:12:46 -0400 User-Agent: KMail/1.5 Cc: alan@lxorguk.ukuu.org.uk MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200304282112.47061.tabris@sbcglobal.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I looked thru marc's archives, and i'm not finding anything specific to this problem, tho I do believe it is probably a known issue. ASUS A7v266-E PDC20265 LITE-ON LTR-32123S only device on the Promise IDE is the cd-rw drive. have four hard drives on the VIA IDE. running kernel 2.4.21-rc1-ac2 + preempt + rmap15g + i2c-sensors burning now works using cdrecord ATAPI (previous was 2.4.21-pre5-ac3 where the ide-scsi was too unstable) at present, reading the cd drive takes 80+% of CPU system time... I would like to be able to enable DMA. i tried doing it manually with hdparm. enabling 32-bit IO or enabling DMA would both make it just not work. [root@tabriel root]# hdparm /dev/hdg /dev/hdg: HDIO_GET_MULTCOUNT failed: Invalid argument IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 0 (off) keepsettings = 0 (off) readonly = 1 (on) readahead = 8 (on) HDIO_GETGEO failed: Invalid argument [root@tabriel root]# [root@tabriel root]# hdparm -I /dev/hdg /dev/hdg: ATAPI CD-ROM, with removable media Model Number: LITE-ON LTR-32123S Serial Number: Firmware Revision: XS0R Standards: Used: ATAPI for CD-ROMs, SFF-8020i, r2.5 Supported: CD-ROM ATAPI-2 Configuration: DRQ response: 50us. Packet size: 12 bytes Capabilities: LBA, IORDY(cannot be disabled) DMA: *mdma0 mdma1 mdma2 udma0 udma1 udma2 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=227ns IORDY flow control=120ns [root@tabriel root]# any more info needed, just ask. any help much appreciated. -- "Ignorance is the soil in which belief in miracles grows." -- Robert G. Ingersoll