From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from kuber.nabble.com (kuber.nabble.com [216.139.236.158]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 65668DDE00 for ; Thu, 15 Nov 2007 01:32:51 +1100 (EST) Received: from isper.nabble.com ([192.168.236.156]) by kuber.nabble.com with esmtp (Exim 4.63) (envelope-from ) id 1IsJIO-0007MM-Cs for linuxppc-dev@ozlabs.org; Wed, 14 Nov 2007 06:32:48 -0800 Message-ID: <13747460.post@talk.nabble.com> Date: Wed, 14 Nov 2007 06:32:48 -0800 (PST) From: sivaji To: linuxppc-dev@ozlabs.org Subject: DMA interrupt is not generating in MPC8641D MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hai, We have designed a MPC8641D based AMC card. As part of our customer requirement for a PCIe messaging driver for communicating between the MPC8641D AMC card as the PCIe target and the MPC8548E AMC card as the Host. We are using the DMA for transferring data between the boards thru' PCIe. The DMA Interrupt on the target end is not getting registered and hence we face the issue (ie) No interrupt is generated after DMA transfer completion. As per datasheet(Rev. 1, 05/2007) page no:445 interrupt number for DMAchannel 1 is 4. We are using linux kernel version :2.6.23-rc3. According to file (include/asm-powerpc/irq.h) line no:636 the interrupt number for DMA in linux is 20(decimal). When using this interrupt number 20 we are not able to registerd the DMA interrupts. Note: 1. Linux is configured in SMP mode. 2. Value of Device status register(0xf80E000C) : 0x0aa28747 Thanks and Regards Sivaji -- View this message in context: http://www.nabble.com/DMA-interrupt-is-not-generating-in-MPC8641D-tf4805310.html#a13747460 Sent from the linuxppc-dev mailing list archive at Nabble.com.