From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bay0-omc2-s11.bay0.hotmail.com (bay0-omc2-s11.bay0.hotmail.com [65.54.246.147]) by ozlabs.org (Postfix) with ESMTP id 164B1DDDE9 for ; Fri, 2 Nov 2007 20:35:39 +1100 (EST) Message-ID: Content-Type: multipart/alternative; boundary="_bc9dc07e-03a5-45d0-96d4-e5320251c462_" From: MingLiu To: "Mead, Joseph" , Subject: RE: Date: Fri, 2 Nov 2007 09:35:38 +0000 In-Reply-To: References: MIME-Version: 1.0 List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --_bc9dc07e-03a5-45d0-96d4-e5320251c462_ Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 8bit Hi Joe, I don't think you can do 64 bit transfer at once because ppc405 is a 32-bit CPU. So we have to the transfer in twice. BR Ming Date: Thu, 1 Nov 2007 14:18:07 -0400From: mead@bnl.govTo: linuxppc-embedded@ozlabs.orgSubject: I am using a Xilinx ML403 board and created a custom IP that connects to the PLB bus. The PLB bus is 64 bits wide. To communicate with the custom IP I have been using iowrite32() and ioread32() function calls to grab 32 bits at a time. Is it possible to grab the full 64 bits in one transfer? I don’t see an iowrite64() or ioread64() function… Thanks,Joe _________________________________________________________________ 用 Live Search 搜尽天下资讯！ http://www.live.com/?searchOnly=true --_bc9dc07e-03a5-45d0-96d4-e5320251c462_ Content-Type: text/html; charset="gb2312" Content-Transfer-Encoding: 8bit
Hi Joe,
I don't think you can do 64 bit transfer at once because ppc405 is a 32-bit CPU. So we have to the transfer in twice.
 
BR
Ming

Date: Thu, 1 Nov 2007 14:18:07 -0400
From: mead@bnl.gov
To: linuxppc-embedded@ozlabs.org
Subject:

I am using a Xilinx ML403 board and created a custom IP that connects to the PLB bus.   The PLB bus is 64 bits wide.   To communicate with the custom IP I have been using iowrite32() and ioread32() function calls to grab 32 bits at a time.  Is it possible to grab the full 64 bits in one transfer?   I don’t see an iowrite64() or ioread64() function…

 

Thanks,
Joe

 

 


使用新一代 Hotmail，更强大、更安全、更多存储空间！ 立刻体验！ --_bc9dc07e-03a5-45d0-96d4-e5320251c462_--