From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: new ata_port_operations for .pmp_{read,write} ? Date: Sun, 24 Feb 2008 23:56:04 -0500 Message-ID: <47C24A64.6060907@pobox.com> References: <4730E312.3090900@navy.mil> <4737C16E.3070607@gmail.com> <4738827D.9060405@pobox.com> <4738F935.1000708@gmail.com> <47BC798F.6070900@pobox.com> <47BE17CA.6060406@rtr.ca> <47BE1833.9090501@rtr.ca> <47BE2C0C.3020801@gmail.com> <47BE2DBD.9010704@rtr.ca> <47BE2F9E.5040206@gmail.com> <47BE32B5.5020300@rtr.ca> <47BE3325.8060209@rtr.ca> <47BE4701.2030104@rtr.ca> <47BE4DFE.2030407@rtr.ca> <47BEDAF2.8000301@rtr.ca> <47BFAC06.5030805@rtr.ca> <47C116D4.1090600@gmail.com> <47C248C8.9090409@rtr.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:54668 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752958AbYBYE4I (ORCPT ); Sun, 24 Feb 2008 23:56:08 -0500 In-Reply-To: <47C248C8.9090409@rtr.ca> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Mark Lord Cc: Tejun Heo , IDE/ATA development list , Saeed Bishara To repeat myself from threads past... In particular with the Marvell 6440 (SATA/SAS, drivers/scsi/mvsas.c) when SATA PMP support is completed, we will want to look at passing things other than normal ATA commands via ->qc_issue. Although selection isn't necessarily, talking to a PMP is fundamentally an asynchronous, event-driven operation just like any other FIS "conversation." We don't need to be adding hooks for each new and interesting type of FIS sent across the wire. That just leads to an awful API. Jeff