From owner-cvs-src-old@FreeBSD.ORG Thu Jan 14 22:29:47 2010 Return-Path: Delivered-To: cvs-src-old@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 26B71106578C for ; Thu, 14 Jan 2010 22:29:47 +0000 (UTC) (envelope-from yongari@FreeBSD.org) Received: from repoman.freebsd.org (repoman.freebsd.org [IPv6:2001:4f8:fff6::29]) by mx1.freebsd.org (Postfix) with ESMTP id EF0938FC18 for ; Thu, 14 Jan 2010 22:29:46 +0000 (UTC) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.14.3/8.14.3) with ESMTP id o0EMTkVm029072 for ; Thu, 14 Jan 2010 22:29:46 GMT (envelope-from yongari@repoman.freebsd.org) Received: (from svn2cvs@localhost) by repoman.freebsd.org (8.14.3/8.14.3/Submit) id o0EMTkeN029071 for cvs-src-old@freebsd.org; Thu, 14 Jan 2010 22:29:46 GMT (envelope-from yongari@repoman.freebsd.org) Message-Id: <201001142229.o0EMTkeN029071@repoman.freebsd.org> X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to yongari@repoman.freebsd.org using -f From: Pyun YongHyeon Date: Thu, 14 Jan 2010 22:29:29 +0000 (UTC) To: cvs-src-old@freebsd.org X-FreeBSD-CVS-Branch: RELENG_7 Subject: cvs commit: src/sys/dev/ste if_ste.c if_stereg.h X-BeenThere: cvs-src-old@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: **OBSOLETE** CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Jan 2010 22:29:47 -0000 yongari 2010-01-14 22:29:29 UTC FreeBSD src repository Modified files: (Branch: RELENG_7) sys/dev/ste if_ste.c if_stereg.h Log: SVN rev 202319 on 2010-01-14 22:29:29Z by yongari MFC r200950,200955,200965-200966,201767-201768 r200950: Implement RX interrupt moderation using one-shot timer interrupt. Unlike TX interrupt, ST201 does not provide any mechanism to suppress RX interrupts. ste(4) can generate more than 70k RX interrupts under heavy RX traffics such that these excessive interrupts make system useless to process other useful things. Maybe this was the major reason why polling support code was introduced to ste(4). The STE_COUNTDOWN register provides a programmable counter that will generate an interrupt upon its expiration. We program STE_DMACTL register to use 3.2us clock rate to drive the counter register. Whenever ste(4) serves RX interrupt, the driver rearm the timer to expire after STE_IM_RX_TIMER_DEFAULT time and disables further generation of RX interrupts. This trick seems to work well and ste(4) generates less than 8k RX interrupts even under 64 bytes UDP torture test. Combined with TX interrupts, the total number of interrupts are less than 10k which looks reasonable on heavily loaded controller. The default RX interrupt moderation time is 150us. Users can change the value at any time with dev.ste.%d.int_rx_mod sysctl node. Setting it 0 effectively disables the RX interrupt moderation feature. Now we have both TX/RX interrupt moderation code so remove loop of interrupt handler which resulted in sub-optimal performance as well as more register accesses. r200955: Add suspend/resume support as well as basic WOL. While I'm here simplify SIOCSIFCAP handler. r200965: Update if_iqdrops in case of RX buffer allocation failure. r200966: ether_ifattach sets if_mtu, remove unnecessary code. r201767: Fix EEPROM access code to return data in host byte order. EEPROM on ST201 always returns 16bits data with little endian format so conversion to host order is required. This change fixes inversed ethernet address on sparc64. r201768: Make sure to store dma address of RX buffer in little endian form. This fixes the last bug which keeps ste(4) from working on sparc64. Revision Changes Path 1.32.2.8 +185 -69 src/sys/dev/ste/if_ste.c 1.15.2.8 +11 -1 src/sys/dev/ste/if_stereg.h