From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266427AbUH0QMQ (ORCPT ); Fri, 27 Aug 2004 12:12:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266397AbUH0QMQ (ORCPT ); Fri, 27 Aug 2004 12:12:16 -0400 Received: from gl177a.glassen.ac ([82.182.223.101]:34311 "HELO findus.dhs.org") by vger.kernel.org with SMTP id S266427AbUH0QMD (ORCPT ); Fri, 27 Aug 2004 12:12:03 -0400 Message-ID: <412F5D50.7000807@findus.dhs.org> Date: Fri, 27 Aug 2004 18:12:00 +0200 From: =?ISO-8859-1?Q?Petter_Sundl=F6f?= User-Agent: Mozilla Thunderbird 0.7.3 (X11/20040825) X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org CC: jgarzik@pobox.com Subject: Cannot enable DMA on SATA drive (SCSI-libsata, VIA SATA) Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Using 2.6.8.1. DMA works fine on /dev/hda (PATA, CD burner). When I try to enable it for my SATA drive (which is performing horribly bad -- 80-90% CPU load on an AMD64 3200+ during copy of large files) I get this error: # hdparm -d 1 /dev/sda /dev/sda: setting using_dma to 1 (on) HDIO_SET_DMA failed: Invalid argument Tried different commands: # hdparm -X66 -d1 /dev/sda /dev/sda: setting using_dma to 1 (on) HDIO_SET_DMA failed: Invalid argument setting xfermode to 66 (UltraDMA mode2) HDIO_DRIVE_CMD(setxfermode) failed: Invalid argument hdparm -d /dev/sda gives absolutely no information. The chipset is VIA82Cxx (ASUS K8VSE Deluxe motherboard). Disk is Maxtor 6Y200M0. Seen in /proc/scsi/scsi like this: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: Maxtor 6Y200M0 Rev: YAR5 Type: Direct-Access ANSI SCSI revision: 05 I also have the Promise controller, which I can use use a regular SATA controller (not RAID as is default). Should I attach it to it instead (I'd rather not if it can be avoided). dmesg info: libata version 1.02 loaded. sata_via version 0.20 ACPI: PCI interrupt 0000:00:0f.0[B] -> GSI 20 (level, low) -> IRQ 20 sata_via(0000:00:0f.0): routed to hard irq line 10 ata1: SATA max UDMA/133 cmd 0xE400 ctl 0xE002 bmdma 0xD000 irq 20 ata2: SATA max UDMA/133 cmd 0xD800 ctl 0xD402 bmdma 0xD008 irq 20 ata1: dev 0 cfg 49:2f00 82:7c6b 83:7f09 84:4003 85:7c69 86:3e01 87:4003 88:407f ata1: dev 0 ATA, max UDMA/133, 398297088 sectors: lba48 ata1: dev 0 configured for UDMA/133 scsi0 : sata_via ata2: no device found (phy stat 00000000) scsi1 : sata_via Vendor: ATA Model: Maxtor 6Y200M0 Rev: YAR5 Type: Direct-Access ANSI SCSI revision: 05 SCSI device sda: 398297088 512-byte hdwr sectors (203928 MB) SCSI device sda: drive cache: write back /dev/scsi/host0/bus0/target0/lun0: p1 p2 < p5 p6 p7 p8 p9 p10 p11 p12 p13 > Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 0