From owner-svn-src-head@FreeBSD.ORG Fri Jun 11 18:06:18 2010 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 279C6106566B; Fri, 11 Jun 2010 18:06:18 +0000 (UTC) (envelope-from xcllnt@mac.com) Received: from asmtpout029.mac.com (asmtpout029.mac.com [17.148.16.104]) by mx1.freebsd.org (Postfix) with ESMTP id 044508FC25; Fri, 11 Jun 2010 18:06:17 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=us-ascii Received: from macbook-pro.lan.xcllnt.net (mail.xcllnt.net [75.101.29.67]) by asmtp029.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0L3V00IPQ3M67I80@asmtp029.mac.com>; Fri, 11 Jun 2010 11:06:08 -0700 (PDT) X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx engine=6.0.2-1004200000 definitions=main-1006110116 X-Proofpoint-Virus-Version: vendor=fsecure engine=1.12.8161:2.4.5,1.2.40,4.0.166 definitions=2010-06-11_02:2010-02-06, 2010-06-11, 2010-06-11 signatures=0 From: Marcel Moolenaar In-reply-to: <20100611175016.GD13776@michelle.cdnetworks.com> Date: Fri, 11 Jun 2010 11:06:06 -0700 Message-id: <59E450BB-1E79-440E-AF82-B78E1E8FE334@mac.com> References: <201006110300.o5B30X9q045387@svn.freebsd.org> <201006110751.40735.jhb@freebsd.org> <853068F6-D736-4DA3-859F-D946D096843D@samsco.org> <19B0DF11-5998-40F5-8095-8D2521B1C597@mac.com> <291D17F7-F387-4A13-8ED9-2898A9F7E018@mac.com> <028BA7D4-90C8-4D2D-B9A5-C1C3CF9B6D7D@samsco.org> <20100611174137.GC13776@michelle.cdnetworks.com> <9F065122-7D91-42E9-A251-5AF4AAF0B4E5@samsco.org> <20100611175016.GD13776@michelle.cdnetworks.com> To: pyunyh@gmail.com X-Mailer: Apple Mail (2.1078) Cc: svn-src-head@freebsd.org, Scott Long , src-committers@freebsd.org, svn-src-all@freebsd.org, John Baldwin Subject: Re: svn commit: r209026 - in head/sys/ia64: ia64 include X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jun 2010 18:06:18 -0000 On Jun 11, 2010, at 10:50 AM, Pyun YongHyeon wrote: >>>> >>>> I'm not clear why you even need bounce buffers for RX. The chip supports 64bit addresses with no boundary or alignment restrictions. >>>> >>> >>> Some controllers have 4G boundary bug so bge(4) restricts dma >>> address space. >> >> That limitation should be reflected in the boundary attribute of the tag, not the lowaddr/highaddr attributes. >> > > Yes, but that needed more code. And I don't have these buggy > controllers so I chose more simple way that would work even though > it may be inefficient. Do you happen to know if one or both of the hardware I have access to is the "buggy" hardware? bge0@pci0:32:2:0: class=0x020000 card=0x12a4103c chip=0x164514e4 rev=0x15 hdr=0x00 vendor = 'Broadcom Corporation' device = 'broadtcomBCM5701 Gigabit Ethernet (BCM5701)' class = network subclass = ethernet bar [10] = type Memory, range 64, base 0x90800000, size 65536, enabled cap 07[40] = PCI-X 64-bit supports 133MHz, 512 burst read, 1 split transaction cap 01[48] = powerspec 2 supports D0 D3 current D0 cap 03[50] = VPD cap 05[58] = MSI supports 8 messages, 64 bit bge0@pci0:1:2:0: class=0x020000 card=0x1311103c chip=0x164814e4 rev=0x10 hdr=0x00 vendor = 'Broadcom Corporation' device = 'NetXtreme Dual Gigabit Adapter (BCM5704)' class = network subclass = ethernet bar [10] = type Memory, range 64, base 0xa0450000, size 65536, enabled cap 07[40] = PCI-X 64-bit supports 133MHz, 2048 burst read, 1 split transaction cap 01[48] = powerspec 2 supports D0 D3 current D0 cap 03[50] = VPD cap 05[58] = MSI supports 8 messages, 64 bit -- Marcel Moolenaar xcllnt@mac.com