From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Stark Subject: Re: Serial ATA (SATA) for Linux status report Date: 14 Jan 2004 17:18:34 -0500 Sender: linux-kernel-owner@vger.kernel.org Message-ID: <87hdyyxjgl.fsf@stark.xeocode.com> References: <20031203204445.GA26987@gtf.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: <20031203204445.GA26987@gtf.org> To: Jeff Garzik Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org List-Id: linux-ide@vger.kernel.org Jeff Garzik writes: > Intel ICH5 > > Issue #2: Excessive interrupts are seen in some configurations. I guess I'm seeing this problem. I'm trying to get my P4P800 motherboard with an ICH5 chipset working completely. So far I've been living without the cdrom or DVD players. I see lots of other posts on linux-kernel about the same problems: Whenever I try to access the cdrom my system becomes unusable. Due to high interrupts, typically over 150k/s. I thought libata would help, but I don't understand how to use the PATA drive and the cdrom drives while I'm using it. The situation is that I have two SATA drives, a PATA drive and two cdrom drives (actually one CD burner and one DVD drive). They are Primary Master: PATA Drive Secondary Master: CD Burner Secondary Slave: DVD-Rom SATA-1: SATA Drive SATA-2: SATA Drive I've tried 2.4.23pre4 (no libata), 2.6.1 (IDE drivers), and 2.6.1 (with scsi libata drivers) with the following results: 2.4.23pre4: as soon as the cdrom is touched I see bursts of 150k interrupts per second and the system becomes unresponsive momentarily every few seconds. 2.6.1 with regular IDE drivers: same as above except the system feels responsive except for disk i/o. I see printks of "Disabling interrupt #18" and all disk i/o freezes for a few seconds. 2.6.1 with scsi ata_piix driver: the SATA drives show up and work fine but the PATA drive and the cdroms doesn't show up at all. This is true even when I compile with the CONFIG_IDE, CONFIG_BLK_DEV_IDE, and CONFIG_BLK_DEV_IDECD enabled. -- greg