From sacadmin Tue May 2 15:17:33 2006 Received: from sunmail5.uk.sun.com (sunmail5.UK.Sun.COM [129.156.85.165]) by sac.sfbay.sun.com (8.12.9+Sun/8.12.9) with ESMTP id k42MHWIQ026106 for ; Tue, 2 May 2006 15:17:33 -0700 (PDT) Received: from brm-avmta-1.central.sun.com (brm-avmta-1.Central.Sun.COM [129.147.4.11]) by sunmail5.uk.sun.com (8.13.4+Sun/8.13.3/ENSMAIL,v2.2) with ESMTP id k42MHSLd026719 for <@sunmail1brm.central.sun.com:psarc@sun.com>; Tue, 2 May 2006 23:17:31 +0100 (BST) Received: from pmxchannel-daemon.brm-avmta-1.central.sun.com by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0IYN00201SL55Z00@brm-avmta-1.central.sun.com> for psarc@sun.com (ORCPT psarc@sun.com); Tue, 02 May 2006 16:17:29 -0600 (MDT) Received: from sfbaymail1sca.SFBay.Sun.COM ([129.145.154.35]) by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0IYN00JBISL4TT50@brm-avmta-1.central.sun.com> for psarc@sun.com (ORCPT psarc@sun.com); Tue, 02 May 2006 16:17:29 -0600 (MDT) Received: from billybob.sfbay.sun.com (billybob.SFBay.Sun.COM [129.146.224.123]) by sfbaymail1sca.SFBay.Sun.COM (8.12.10+Sun/8.12.10/ENSMAIL,v2.2) with ESMTP id k42MHSoc023503; Tue, 02 May 2006 15:17:28 -0700 (PDT) Received: from billybob (billybob [129.146.224.123]) by billybob.sfbay.sun.com (8.13.6+Sun/8.13.6) with SMTP id k42MKsvf143136; Tue, 02 May 2006 15:20:54 -0700 (PDT) Date: Tue, 02 May 2006 15:20:54 -0700 (PDT) From: Shudong Zhou Subject: PSARC 2006/285 MPxIO Driver Properties To: psarc@sun.com Cc: ramaswamy.tummala@sun.com Reply-to: Shudong Zhou Message-id: <200605022220.k42MKsvf143136@billybob.sfbay.sun.com> MIME-version: 1.0 X-Mailer: dtmail 1.3.0 @(#)CDE Version 1.7_13 SunOS 5.11 i86pc i386 Content-type: TEXT/plain; charset=us-ascii Content-transfer-encoding: 7BIT Content-MD5: em4XH8wCnHidGYZD92bZ3g== X-PMX-Version: 5.1.2.240295 Status: RO Content-Length: 2911 I'm sponsoring the following fasttrack for Ramaswamy Tummala. The timer is set to expire on 5/9/2006. The requested release binding is patch. The immediate consumers of the interfaces are targeting ON, so there are no contract at this time. Future contracts are anticipated from NWS consolidation. Shudong 1. Summary This case proposes two new properties ddi-vhci-class and ddi-no-root-support to be specified in a pHCI driver.conf file. 2. Background MPxIO framework (referred to as MDI henceforth), maintains a private cache containing vHCI to pHCI mappings for devices under MPxIO. The cache is persisted across reboots. If the cache is corrupted or deleted or not available for any reason, MDI automatically rebuilds the cache. To rebuild the cache MDI needs to attach all pHCI drivers. For this purpose MDI currently has a hard coded built-in list of all pHCI driver names. 3. Problem The hard coded list of pHCI driver names is a maintenance overhead as the list needs to be updated whenever a new pHCI driver is added or the existing one is removed. To eliminate this overhead the hard coded list needs to be removed and replaced by a better mechanism. 4. Solution We propose two new properties ddi-vhci-class and ddi-no-root-support to be specified in a pHCI driver.conf file. Since MDI can know the pHCI driver information using these properties, MDI will no longer have to hard code the pHCI driver names. 4.1 Interface Commitment Level ---------------------------------------------------------------------------- Interface Level Comments ---------------------------------------------------------------------------- ddi-vhci-class Contracted Consolidation Priv Property to specify vHCI class ddi-no-root-support "" Property to specify no root support. 4.2 Details The driver.conf file of a pHCI driver must specify the vHCI class it belongs to using the new ddi-vhci-class string property. Some pHCI drivers can not safely attach prior to the mounting of the root in the kernel, possibly because they or their dependent modules need some config data on the disk that can only be read after the root is mounted. Such pHCI drivers must also specify ddi-no-root-support integer property in their driver.conf files. If MDI has a need to build the cache, attach of pHCI drivers with ddi-no-root-support property will be deferred until after the root is mounted in the kernel. Example entries: fp.conf file would specify: ddi-vhci-class="scsi_vhci"; iscsi.conf file would specify: ddi-vhci-class="scsi_vhci"; ddi-no-root-support=1; tavor.conf file would specify: ddi-vhci-class="ib"; 5. References PSARC 2005/583 VHCI Driven Device Enumeration PSARC 1999/647 Multiplexed I/O Framework From sacadmin Tue May 9 17:21:04 2006 Received: from sunmail4.Singapore.Sun.COM (sunmail4.Singapore.Sun.COM [129.158.71.19]) by sac.sfbay.sun.com (8.13.6+Sun/8.13.6) with ESMTP id k4A0L3qb006974 for ; Tue, 9 May 2006 17:21:04 -0700 (PDT) Received: from brm-avmta-1.central.sun.com (brm-avmta-1.Central.Sun.COM [129.147.4.11]) by sunmail4.Singapore.Sun.COM (8.13.4+Sun/8.13.3/ENSMAIL,v2.2) with ESMTP id k4A0L05N019327 for <@sunmail1brm.central.sun.com:psarc@sun.com>; Wed, 10 May 2006 08:21:02 +0800 (SGT) Received: from pmxchannel-daemon.brm-avmta-1.central.sun.com by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0IZ000A05WYY2G00@brm-avmta-1.central.sun.com> for psarc@sun.com (ORCPT psarc@sun.com); Tue, 09 May 2006 18:20:58 -0600 (MDT) Received: from sfbaymail2sca.sfbay.sun.com ([129.145.155.42]) by brm-avmta-1.central.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0IZ0007UVWYYZI10@brm-avmta-1.central.sun.com> for psarc@sun.com (ORCPT psarc@sun.com); Tue, 09 May 2006 18:20:58 -0600 (MDT) Received: from billybob.sfbay.sun.com (billybob.SFBay.Sun.COM [129.146.224.123]) by sfbaymail2sca.sfbay.sun.com (8.12.10+Sun/8.12.10/ENSMAIL,v2.2) with ESMTP id k4A0KvTF005779; Tue, 09 May 2006 17:20:57 -0700 (PDT) Received: from billybob (billybob [129.146.224.123]) by billybob.sfbay.sun.com (8.13.6+Sun/8.13.6) with SMTP id k4A0Oe3Q103821; Tue, 09 May 2006 17:24:40 -0700 (PDT) Date: Tue, 09 May 2006 17:24:40 -0700 (PDT) From: Shudong Zhou Subject: Re: PSARC 2006/285 MPxIO Driver Properties To: psarc@sun.com Cc: ramaswamy.tummala@sun.com Reply-to: Shudong Zhou Message-id: <200605100024.k4A0Oe3Q103821@billybob.sfbay.sun.com> MIME-version: 1.0 X-Mailer: dtmail 1.3.0 @(#)CDE Version 1.7_13 SunOS 5.11 i86pc i386 Content-type: TEXT/plain; charset=us-ascii Content-transfer-encoding: 7BIT Content-MD5: +ELxCCCktk2PVLXqONOmYg== X-PMX-Version: 5.1.2.240295 Status: RO Content-Length: 88 The timer expired with no comments. I'm marking this case as closed approved. Shudong