From owner-svn-src-projects@FreeBSD.ORG Sat Jan 12 22:00:36 2013 Return-Path: Delivered-To: svn-src-projects@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 2AD53666; Sat, 12 Jan 2013 22:00:36 +0000 (UTC) (envelope-from marcel@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) by mx1.freebsd.org (Postfix) with ESMTP id 1D852AC3; Sat, 12 Jan 2013 22:00:36 +0000 (UTC) Received: from svn.freebsd.org (svn.FreeBSD.org [8.8.178.70]) by svn.freebsd.org (8.14.5/8.14.5) with ESMTP id r0CM0abd085934; Sat, 12 Jan 2013 22:00:36 GMT (envelope-from marcel@svn.freebsd.org) Received: (from marcel@localhost) by svn.freebsd.org (8.14.5/8.14.5/Submit) id r0CM0ZDb085933; Sat, 12 Jan 2013 22:00:35 GMT (envelope-from marcel@svn.freebsd.org) Message-Id: <201301122200.r0CM0ZDb085933@svn.freebsd.org> From: Marcel Moolenaar Date: Sat, 12 Jan 2013 22:00:35 +0000 (UTC) To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r245343 - projects/altix2/sys/dev/isp X-SVN-Group: projects MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-projects@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "SVN commit messages for the src " projects" tree" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jan 2013 22:00:36 -0000 Author: marcel Date: Sat Jan 12 22:00:35 2013 New Revision: 245343 URL: http://svnweb.freebsd.org/changeset/base/245343 Log: Slightly optimize the request and response queue synchronization. We have a single map that's used for both and we only need to synchronize 1 request and 1 rsponse. Avoid using busdma_sync with post R/W that may force a platform to synchronize 80KB worth of cache and instead use busdma_sync_range twice: once for the request with post write (64B) and once for the response with post read (64B). Modified: projects/altix2/sys/dev/isp/isp_freebsd.h Modified: projects/altix2/sys/dev/isp/isp_freebsd.h ============================================================================== --- projects/altix2/sys/dev/isp/isp_freebsd.h Sat Jan 12 21:52:04 2013 (r245342) +++ projects/altix2/sys/dev/isp/isp_freebsd.h Sat Jan 12 22:00:35 2013 (r245343) @@ -431,8 +431,10 @@ case SYNC_SFORDEV: \ break; \ } \ case SYNC_REQUEST: \ - busdma_sync(isp->isp_osinfo.cdmd, \ - BUSDMA_SYNC_PREREAD | BUSDMA_SYNC_PREWRITE); \ + busdma_sync_range(isp->isp_osinfo.cdmd, BUSDMA_SYNC_PREWRITE, \ + isp->isp_rquest_dma + (offset * size), size); \ + busdma_sync_range(isp->isp_osinfo.cdmd, BUSDMA_SYNC_PREREAD, \ + isp->isp_result_dma + (offset * size), size); \ break; \ case SYNC_SFORCPU: \ { \ @@ -441,8 +443,10 @@ case SYNC_SFORCPU: \ break; \ } \ case SYNC_RESULT: \ - busdma_sync(isp->isp_osinfo.cdmd, \ - BUSDMA_SYNC_POSTREAD | BUSDMA_SYNC_POSTWRITE); \ + busdma_sync_range(isp->isp_osinfo.cdmd, BUSDMA_SYNC_POSTWRITE, \ + isp->isp_rquest_dma + (offset * size), size); \ + busdma_sync_range(isp->isp_osinfo.cdmd, BUSDMA_SYNC_POSTREAD, \ + isp->isp_result_dma + (offset * size), size); \ break; \ case SYNC_REG: \ bus_space_barrier(isp->isp_osinfo.bus_tag, \