From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from outbound1-cpk-R.bigfish.com (outbound-cpk.frontbridge.com [207.46.163.16]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "*.bigfish.com", Issuer "*.bigfish.com" (not verified)) by ozlabs.org (Postfix) with ESMTP id A8BCEDDE36 for ; Fri, 27 Apr 2007 07:37:00 +1000 (EST) MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Subject: RE: ML403 and PPC4xx_DMA ? Date: Thu, 26 Apr 2007 15:36:56 -0600 In-Reply-To: <1177603586.5532.20.camel@localhost> From: "Rick Moleres" To: =?iso-8859-1?Q?Joachim_F=F6rster?= , Message-Id: <20070426213657.CAFF7630046@mail101-cpk.bigfish.com> List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Joachim, The Xilinx PPC405 core does not have an integrated DMA controller. -----Original Message----- From: linuxppc-embedded-bounces+moleres=3Dxilinx.com@ozlabs.org = [mailto:linuxppc-embedded-bounces+moleres=3Dxilinx.com@ozlabs.org] On = Behalf Of Joachim F=F6rster Sent: Thursday, April 26, 2007 10:06 AM To: linuxppc-embedded@ozlabs.org Subject: ML403 and PPC4xx_DMA ? Hi all, I have a question regarding the PowerPC 405 Core on the Xilinx ML403 board and DMA . The Linux kernel has an option called CONFIG_PPC4xx_DMA. Do all/some PowerPC 4xx Cores have an integrated DMA Controller? I tried to find some documentation about this DMA Controller in several Xilinx and IBM manuals which cover the PowerPC 405 Core - but I didn't find anything. So, my question is: Does the Virtex-4 FX12 PowerPC 405 Core on the ML403 have such DMA Controller? If yes, is it usable within Linux to transfer data from RAM to a device's hardware buffers (typical task of a DMA controller)? Thanks, Joachim PS: I tried to compile a kernel image with CONFIG_PPC4xx_DMA enabled, but gcc complains about missing definitions in ppc4xx_dma.c ... e.g. DCRN_DMASR (defined in ibm405.h). Well I guess I have to have DCRN_MASR_BASE defined in xparameters_ml403.h .... but defined to what? _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded