From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: HPA and failed opcode was: 0x37 ? Date: Wed, 31 Jan 2007 15:54:10 +0300 Message-ID: <45C09172.1030304@ru.mvista.com> References: <45BF5003.3000503@imc-berlin.de> <20070130164401.295f9913@localhost.localdomain> <45BF7658.1090204@imc-berlin.de> <20070130172629.70ad628d@localhost.localdomain> <45BF7E21.7010605@imc-berlin.de> <20070130180727.594b35d0@localhost.localdomain> <45BF88B9.3050802@imc-berlin.de> <45BF8F33.3070008@ru.mvista.com> <311601c90701301156nb135de6g996eaff8b2f95a6c@mail.gmail.com> <45C0536F.5020005@imc-berlin.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from h155.mvista.com ([63.81.120.155]:43971 "EHLO imap.sh.mvista.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S933208AbXAaMyS (ORCPT ); Wed, 31 Jan 2007 07:54:18 -0500 In-Reply-To: <45C0536F.5020005@imc-berlin.de> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Steven Scholz Cc: "Eric D. Mudama" , linux-ide@vger.kernel.org Hello. Steven Scholz wrote: >>Maybe the FPGA is discarding the taskfile writes once the HOB bit is >>set? It wouldn't affect the READ NATIVE MAX ADDRESS EXT command being >>issued since the only the command register matters for that, but it >>would affect SET MAX ADDRESS EXT working properly. >>Without a device > 137GB to test with, and without errors on the >>device, you might not see any odd behavior in normal usage. >>It's *really* unlikely the drive doesn't have a working taskfile. > I am sorry. But I don't understand what a "working taskfile" means. > I don't have CONFIG_IDE_TASK_IOCTL enabled if that means anything. > The FPGA does nothing except decoding adresseses from the ARM cpu, > controlling the A[2..0], CS[1..0], IOR, IOW lines of the HDD. I've not seen you quoting the code that sets ofsset for the IDE_CONTROL_REG, BTW... Without this register, LBA48 is completely broken > In linux all I do is setting up some hw_regs_t struct (with hw.io_ports[]) > according to my memory map and call ide_register_hw() ... > So looks like I need to find out more about that taskfile stuff. Taskfile is another (and probably an older one) anme for the IDE command block registers. > Steven MBR, Sergei