From owner-cvs-src@FreeBSD.ORG Fri Aug 27 21:25:16 2004 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CB10016A4CE; Fri, 27 Aug 2004 21:25:16 +0000 (GMT) Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115]) by mx1.FreeBSD.org (Postfix) with ESMTP id BE4D443D5D; Fri, 27 Aug 2004 21:25:16 +0000 (GMT) (envelope-from gibbs@FreeBSD.org) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.12.11/8.12.11) with ESMTP id i7RLPG0x076075; Fri, 27 Aug 2004 21:25:16 GMT (envelope-from gibbs@repoman.freebsd.org) Received: (from gibbs@localhost) by repoman.freebsd.org (8.12.11/8.12.11/Submit) id i7RLPG3K076074; Fri, 27 Aug 2004 21:25:16 GMT (envelope-from gibbs) Message-Id: <200408272125.i7RLPG3K076074@repoman.freebsd.org> From: "Justin T. Gibbs" Date: Fri, 27 Aug 2004 21:25:16 +0000 (UTC) To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org X-FreeBSD-CVS-Branch: HEAD Subject: cvs commit: src/sys/isa psm.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Aug 2004 21:25:17 -0000 gibbs 2004-08-27 21:25:16 UTC FreeBSD src repository Modified files: sys/isa psm.c Log: Improve sync recovery algorithm: o Remove PSM_SYNCERR_THRESHOLD1. This value specified how many sync errors were required before the mouse is re-initialised. Re-initialisation is now done after (packetsize * 2) sync errors as things aren't likely to improve after that. o Reset lastinputerror when re-initialisation occurs. We don't want to continue to drop data after re-initialisation. o Count the number of failed packets independently of the syncerrors statistic. syncerrors is useful for recovering sync within a single packet. pkterrors allows us to detect when the mouse changes its packet mode due to some external event (e.g. KVM switch). o Reinitialize the mouse if we see more than psmpkterrthresh errors during the validation period. The validation period begins as soon as a sync error is detected and continues until psmerrsecs/msecs time has elapsed. The defaults for these two values force a reset if we see two packet errors in a 2 second period. This allows rapid detection of packet framing errors caused by the mouse changing packet modes. o Export psmpkterrthresh as a sysctl o Export psmloglevel as a sysctl. o Enable more debugging code to be enabled at runtime via psmloglevel. o Simplify verbose conditioned loging by using a VLOG macro. o Add several comments describing the sync recovery algorithm of this driver. Large Portions by: Brian Somers Inspired and Frustrated by: Belkin KVMs Reviewed by: njl, philip Revision Changes Path 1.80 +120 -98 src/sys/isa/psm.c