From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 16 Jan 2004 07:25:25 +0000 (GMT) Received: from mistral-243-146-ban.mistralsoftware.com ([IPv6:::ffff:203.196.146.243]:9795 "EHLO Mistralsoftware.com") by linux-mips.org with ESMTP id ; Fri, 16 Jan 2004 07:25:24 +0000 Received: from mistralsoftware.com ([192.168.13.230]) (authenticated user suresh@mistralsoftware.com) by mistralsoftware.com (mistralsoftware.com [192.168.10.12]) (MDaemon.PRO.v6.8.5.R) with ESMTP id 40-md50000000011.tmp for ; Fri, 16 Jan 2004 13:11:46 +0530 Message-ID: <40079391.7080301@mistralsoftware.com> Date: Fri, 16 Jan 2004 13:02:33 +0530 From: "Suresh. R" User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030225 X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-mips@linux-mips.org Subject: VR4131 - MQ1132 - UPD63335 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Authenticated-Sender: suresh@mistralsoftware.com X-Spam-Processed: mistralsoftware.com, Fri, 16 Jan 2004 13:11:46 +0530 (not processed: message from valid local sender) X-MDRemoteIP: 192.168.13.230 X-Return-Path: suresh@mistralsoftware.com X-MDaemon-Deliver-To: linux-mips@linux-mips.org Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 3994 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: suresh@mistralsoftware.com Precedence: bulk X-list: linux-mips Hi, This might be a very basic question, but I am very new to this field. So please help me. I am writing a linux device driver for UPD63335 audio codec. Its controlled through the MQ1132 co-processor. The VR4131 is the processor. The memory of MQ1132 is mapped to the processor memory in Kseg1 (0xA000 0000 onwards) which the manual says is TLB Unmapped region. Now my question is is it necessary to map this region before using it in Linux. Actually I have WinCE code for my reference. In that code the programmer is mapping the region using Virtual Cpoy and Virtual Alloc. Is it necessary to do that or Can I directly address the memory locatoin. Please help Thanks in advance Regards Suresh