From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: does AHCI work on intel 915 ICH6 controllers? Is it supposed to? Date: Wed, 08 Jun 2005 21:55:29 -0400 Message-ID: <42A7A191.7040700@pobox.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.dvmed.net ([216.237.124.58]:39379 "EHLO mail.dvmed.net") by vger.kernel.org with ESMTP id S261203AbVFIBzc (ORCPT ); Wed, 8 Jun 2005 21:55:32 -0400 In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: sean Cc: linux-ide@vger.kernel.org sean wrote: > I'm running 2.6.12-rc5 on a gigabyte GA-8i915G Pro mobo. It has only one > drive -a Maxtor SATA. > > lspci -vv -s 00:1f.2 > 00:1f.2 IDE interface: Intel Corp. 82801FB/FW (ICH6/ICH6W) SATA > Controller (rev 03) (prog-if 80 [Master]) > Subsystem: Giga-byte Technology: Unknown device 2651 > Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- > ParErr- Stepping- SERR- FastB2B- > Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- > SERR- Latency: 0 > Interrupt: pin B routed to IRQ 201 > Region 0: I/O ports at > Region 1: I/O ports at > Region 2: I/O ports at > Region 3: I/O ports at > Region 4: I/O ports at f000 [size=16] Plain vanilla ICH6 does not support AHCI, but other ICH6 variants such as ICH6-R do. If your chip does support AHCI, then your BIOS is not enabling it. AHCI support is clearly indicated by Region 5, a memory (MMIO) region: > Region 0: I/O ports at e880 [size=8] > Region 1: I/O ports at e800 [size=4] > Region 2: I/O ports at e480 [size=8] > Region 3: I/O ports at e400 [size=4] > Region 4: I/O ports at e080 [size=32] > Region 5: Memory at feb3fc00 (32-bit, non-prefetchable) [size=1K] Regards, Jeff